Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

152 files changed, 13214 insertions, 0 deletions

diff --git a/REORG.TODO/io/Makefile b/REORG.TODO/io/Makefile
new file mode 100644
index 0000000000..16365e581a
--- /dev/null
+++ b/REORG.TODO/io/Makefile
@@ -0,0 +1,117 @@
+# Copyright (C) 1992-2017 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+#
+#	Sub-makefile for I/O portion of the library.
+#
+subdir	:= io
+
+include ../Makeconfig
+
+headers := sys/stat.h bits/stat.h sys/statfs.h bits/statfs.h sys/vfs.h \
+	   sys/statvfs.h bits/statvfs.h fcntl.h sys/fcntl.h bits/fcntl.h \
+	   poll.h sys/poll.h bits/poll.h bits/fcntl2.h bits/poll2.h \
+	   utime.h ftw.h fts.h sys/sendfile.h
+
+routines :=								\
+	utime								\
+	mkfifo mkfifoat							\
+	stat fstat lstat stat64 fstat64 lstat64 fstatat fstatat64	\
+	xstat fxstat lxstat xstat64 fxstat64 lxstat64			\
+	mknod mknodat xmknod xmknodat					\
+	fxstatat fxstatat64						\
+	statfs fstatfs statfs64 fstatfs64				\
+	statvfs fstatvfs statvfs64 fstatvfs64				\
+	umask chmod fchmod lchmod fchmodat				\
+	mkdir mkdirat							\
+	open open_2 open64 open64_2 openat openat_2 openat64 openat64_2	\
+	read write lseek lseek64 access euidaccess faccessat		\
+	fcntl flock lockf lockf64					\
+	close dup dup2 dup3 pipe pipe2					\
+	creat creat64							\
+	chdir fchdir							\
+	getcwd getwd getdirname						\
+	chown fchown lchown fchownat					\
+	ttyname ttyname_r isatty					\
+	link linkat symlink symlinkat readlink readlinkat		\
+	unlink unlinkat rmdir						\
+	ftw ftw64 fts fts64 poll ppoll					\
+	posix_fadvise posix_fadvise64					\
+	posix_fallocate posix_fallocate64				\
+	sendfile sendfile64 \
+	utimensat futimens
+
+# These routines will be omitted from the libc shared object.
+# Instead the static object files will be included in a special archive
+# linked against when the shared library will be used.
+static-only-routines = stat fstat lstat stat64 fstat64 lstat64	\
+		       fstatat fstatat64 mknod mknodat
+
+others		:= pwd
+test-srcs	:= ftwtest
+tests		:= test-utime test-stat test-stat2 test-lfs tst-getcwd \
+		   tst-fcntl bug-ftw1 bug-ftw2 bug-ftw3 bug-ftw4 tst-statvfs \
+		   tst-openat tst-unlinkat tst-fstatat tst-futimesat \
+		   tst-renameat tst-fchownat tst-fchmodat tst-faccessat \
+		   tst-symlinkat tst-linkat tst-readlinkat tst-mkdirat \
+		   tst-mknodat tst-mkfifoat tst-ttyname_r bug-ftw5 \
+		   tst-posix_fallocate tst-posix_fallocate64 \
+		   tst-fts tst-fts-lfs tst-open-tmpfile
+
+ifeq ($(run-built-tests),yes)
+tests-special += $(objpfx)ftwtest.out
+endif
+
+include ../Rules
+
+CFLAGS-open.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-open64.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-creat.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-creat64.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-fcntl.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-poll.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-ppoll.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-lockf.c = -fexceptions
+CFLAGS-statfs.c = -fexceptions
+CFLAGS-fstatfs.c = -fexceptions
+CFLAGS-statvfs.c = -fexceptions
+CFLAGS-fstatvfs.c = -fexceptions
+CFLAGS-fts.c = -Wno-uninitialized $(uses-callbacks) -fexceptions
+CFLAGS-fts64.c = -Wno-uninitialized $(uses-callbacks) -fexceptions
+CFLAGS-ftw.c = $(uses-callbacks) -fexceptions
+CFLAGS-ftw64.c = $(uses-callbacks) -fexceptions
+CFLAGS-lockf.c = -fexceptions
+CFLAGS-posix_fallocate.c = -fexceptions
+CFLAGS-posix_fallocate64.c = -fexceptions
+CFLAGS-fallocate.c = -fexceptions
+CFLAGS-fallocate64.c = -fexceptions
+CFLAGS-sync_file_range.c = -fexceptions
+CFLAGS-read.c = -fexceptions
+CFLAGS-write.c = -fexceptions
+
+CFLAGS-test-stat.c = -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
+CFLAGS-test-lfs.c = -D_LARGEFILE64_SOURCE
+
+test-stat2-ARGS = Makefile . $(objpfx)test-stat2
+
+tst-statvfs-ARGS = $(objpfx)tst-statvfs tst-statvfs.c /tmp
+
+ifeq ($(run-built-tests),yes)
+$(objpfx)ftwtest.out: ftwtest-sh $(objpfx)ftwtest
+	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
+	$(evaluate-test)
+endif
diff --git a/REORG.TODO/io/Versions b/REORG.TODO/io/Versions
new file mode 100644
index 0000000000..64316cd025
--- /dev/null
+++ b/REORG.TODO/io/Versions
@@ -0,0 +1,128 @@
+libc {
+  GLIBC_2.0 {
+    # functions used in inline functions or macros
+    __xstat; __fxstat; __lxstat; __xmknod; __write; __close; __fcntl;
+    __lseek; __open; __read;
+
+    # functions used by libstdc++ 2.7.2
+    __dup2; __pipe;
+
+    # a*
+    access;
+
+    # c*
+    chdir; chmod; chown; close; creat;
+
+    # d*
+    dup; dup2;
+
+    # e*
+    euidaccess;
+
+    # f*
+    fchdir; fchmod; fchown; fcntl; flock; fstatfs; fts_children; fts_close;
+    fts_open; fts_read; fts_set; ftw;
+
+    # g*
+    get_current_dir_name; getcwd; getwd;
+
+    # i*
+    isatty;
+
+    # l*
+    lchown; link; lockf; lseek;
+
+    # m*
+    mkdir; mkfifo;
+
+    # o*
+    open;
+
+    # p*
+    pipe; poll;
+
+    # r*
+    read; readlink; rmdir;
+
+    # s*
+    statfs; symlink;
+
+    # t*
+    ttyname; ttyname_r;
+
+    # u*
+    umask; unlink; utime;
+
+    # w*
+    write;
+  }
+  GLIBC_2.1 {
+    # functions used in other libraries
+    __xstat64; __fxstat64; __lxstat64; __poll;
+
+    # c*
+    creat64;
+
+    # f*
+    fstatfs64; fstatvfs; fstatvfs64; ftw64;
+
+    # l*
+    lockf64; lseek64;
+
+    # n*
+    nftw; nftw64;
+
+    # o*
+    open64;
+
+    # s*
+    sendfile;
+    statfs64; statvfs; statvfs64;
+  }
+  GLIBC_2.2 {
+    # p*
+    posix_fadvise; posix_fadvise64; posix_fallocate; posix_fallocate64;
+
+    __open64;
+  }
+  GLIBC_2.3 {
+    # s*
+    sendfile64;
+  }
+  GLIBC_2.3.2 {
+    # l*
+    lchmod;
+  }
+  GLIBC_2.3.3 {
+    # n*
+    nftw; nftw64;
+  }
+  GLIBC_2.4 {
+    eaccess;
+
+    faccessat;
+    fchmodat;
+    fchownat;
+    __fxstatat; __fxstatat64;
+    linkat;
+    mkdirat; mkfifoat; __xmknodat;
+    openat; openat64;
+    readlinkat;
+    symlinkat;
+    unlinkat;
+
+    ppoll;
+  }
+  GLIBC_2.6 {
+    utimensat; futimens;
+  }
+  GLIBC_2.7 {
+    __open_2; __open64_2; __openat_2; __openat64_2;
+  }
+  GLIBC_2.9 {
+    dup3; pipe2;
+  }
+  GLIBC_2.23 {
+    fts64_children; fts64_close; fts64_open; fts64_read; fts64_set;
+  }
+}
diff --git a/REORG.TODO/io/access.c b/REORG.TODO/io/access.c
new file mode 100644
index 0000000000..72eba36e3f
--- /dev/null
+++ b/REORG.TODO/io/access.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+/* Test for access to FILE without setting errno.   */
+int
+__access_noerrno (const char *file, int type)
+{
+  return -1;
+}
+
+/* Test for access to FILE.  */
+int
+__access (const char *file, int type)
+{
+  if (file == NULL || (type & ~(R_OK|W_OK|X_OK|F_OK)) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (access)
+
+weak_alias (__access, access)
diff --git a/REORG.TODO/io/bits/fcntl2.h b/REORG.TODO/io/bits/fcntl2.h
new file mode 100644
index 0000000000..4109ead9a8
--- /dev/null
+++ b/REORG.TODO/io/bits/fcntl2.h
@@ -0,0 +1,172 @@
+/* Checking macros for fcntl functions.
+   Copyright (C) 2007-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_FCNTL_H
+# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead."
+#endif
+
+/* Check that calls to open and openat with O_CREAT or O_TMPFILE set have an
+   appropriate third/fourth parameter.  */
+#ifndef __USE_FILE_OFFSET64
+extern int __open_2 (const char *__path, int __oflag) __nonnull ((1));
+extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...),
+		       open) __nonnull ((1));
+#else
+extern int __REDIRECT (__open_2, (const char *__path, int __oflag),
+		       __open64_2) __nonnull ((1));
+extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...),
+		       open64) __nonnull ((1));
+#endif
+__errordecl (__open_too_many_args,
+	     "open can be called either with 2 or 3 arguments, not more");
+__errordecl (__open_missing_mode,
+	     "open with O_CREAT or O_TMPFILE in second argument needs 3 arguments");
+
+__fortify_function int
+open (const char *__path, int __oflag, ...)
+{
+  if (__va_arg_pack_len () > 1)
+    __open_too_many_args ();
+
+  if (__builtin_constant_p (__oflag))
+    {
+      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)
+	{
+	  __open_missing_mode ();
+	  return __open_2 (__path, __oflag);
+	}
+      return __open_alias (__path, __oflag, __va_arg_pack ());
+    }
+
+  if (__va_arg_pack_len () < 1)
+    return __open_2 (__path, __oflag);
+
+  return __open_alias (__path, __oflag, __va_arg_pack ());
+}
+
+
+#ifdef __USE_LARGEFILE64
+extern int __open64_2 (const char *__path, int __oflag) __nonnull ((1));
+extern int __REDIRECT (__open64_alias, (const char *__path, int __oflag,
+					...), open64) __nonnull ((1));
+__errordecl (__open64_too_many_args,
+	     "open64 can be called either with 2 or 3 arguments, not more");
+__errordecl (__open64_missing_mode,
+	     "open64 with O_CREAT or O_TMPFILE in second argument needs 3 arguments");
+
+__fortify_function int
+open64 (const char *__path, int __oflag, ...)
+{
+  if (__va_arg_pack_len () > 1)
+    __open64_too_many_args ();
+
+  if (__builtin_constant_p (__oflag))
+    {
+      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)
+	{
+	  __open64_missing_mode ();
+	  return __open64_2 (__path, __oflag);
+	}
+      return __open64_alias (__path, __oflag, __va_arg_pack ());
+    }
+
+  if (__va_arg_pack_len () < 1)
+    return __open64_2 (__path, __oflag);
+
+  return __open64_alias (__path, __oflag, __va_arg_pack ());
+}
+#endif
+
+
+#ifdef __USE_ATFILE
+# ifndef __USE_FILE_OFFSET64
+extern int __openat_2 (int __fd, const char *__path, int __oflag)
+     __nonnull ((2));
+extern int __REDIRECT (__openat_alias, (int __fd, const char *__path,
+					int __oflag, ...), openat)
+     __nonnull ((2));
+# else
+extern int __REDIRECT (__openat_2, (int __fd, const char *__path,
+				    int __oflag), __openat64_2)
+     __nonnull ((2));
+extern int __REDIRECT (__openat_alias, (int __fd, const char *__path,
+					int __oflag, ...), openat64)
+     __nonnull ((2));
+# endif
+__errordecl (__openat_too_many_args,
+	     "openat can be called either with 3 or 4 arguments, not more");
+__errordecl (__openat_missing_mode,
+	     "openat with O_CREAT or O_TMPFILE in third argument needs 4 arguments");
+
+__fortify_function int
+openat (int __fd, const char *__path, int __oflag, ...)
+{
+  if (__va_arg_pack_len () > 1)
+    __openat_too_many_args ();
+
+  if (__builtin_constant_p (__oflag))
+    {
+      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)
+	{
+	  __openat_missing_mode ();
+	  return __openat_2 (__fd, __path, __oflag);
+	}
+      return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
+    }
+
+  if (__va_arg_pack_len () < 1)
+    return __openat_2 (__fd, __path, __oflag);
+
+  return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
+}
+
+
+# ifdef __USE_LARGEFILE64
+extern int __openat64_2 (int __fd, const char *__path, int __oflag)
+     __nonnull ((2));
+extern int __REDIRECT (__openat64_alias, (int __fd, const char *__path,
+					  int __oflag, ...), openat64)
+     __nonnull ((2));
+__errordecl (__openat64_too_many_args,
+	     "openat64 can be called either with 3 or 4 arguments, not more");
+__errordecl (__openat64_missing_mode,
+	     "openat64 with O_CREAT or O_TMPFILE in third argument needs 4 arguments");
+
+__fortify_function int
+openat64 (int __fd, const char *__path, int __oflag, ...)
+{
+  if (__va_arg_pack_len () > 1)
+    __openat64_too_many_args ();
+
+  if (__builtin_constant_p (__oflag))
+    {
+      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)
+	{
+	  __openat64_missing_mode ();
+	  return __openat64_2 (__fd, __path, __oflag);
+	}
+      return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
+    }
+
+  if (__va_arg_pack_len () < 1)
+    return __openat64_2 (__fd, __path, __oflag);
+
+  return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
+}
+# endif
+#endif
diff --git a/REORG.TODO/io/bits/poll2.h b/REORG.TODO/io/bits/poll2.h
new file mode 100644
index 0000000000..0fbba4f325
--- /dev/null
+++ b/REORG.TODO/io/bits/poll2.h
@@ -0,0 +1,81 @@
+/* Checking macros for poll functions.
+   Copyright (C) 2012-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_POLL_H
+# error "Never include <bits/poll2.h> directly; use <sys/poll.h> instead."
+#endif
+
+
+__BEGIN_DECLS
+
+extern int __REDIRECT (__poll_alias, (struct pollfd *__fds, nfds_t __nfds,
+				      int __timeout), poll);
+extern int __poll_chk (struct pollfd *__fds, nfds_t __nfds, int __timeout,
+		       __SIZE_TYPE__ __fdslen);
+extern int __REDIRECT (__poll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
+					 int __timeout, __SIZE_TYPE__ __fdslen),
+		       __poll_chk)
+  __warnattr ("poll called with fds buffer too small file nfds entries");
+
+__fortify_function int
+poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
+{
+  if (__bos (__fds) != (__SIZE_TYPE__) -1)
+    {
+      if (! __builtin_constant_p (__nfds))
+	return __poll_chk (__fds, __nfds, __timeout, __bos (__fds));
+      else if (__bos (__fds) / sizeof (*__fds) < __nfds)
+	return __poll_chk_warn (__fds, __nfds, __timeout, __bos (__fds));
+    }
+
+  return __poll_alias (__fds, __nfds, __timeout);
+}
+
+
+#ifdef __USE_GNU
+extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
+				       const struct timespec *__timeout,
+				       const __sigset_t *__ss), ppoll);
+extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
+			const struct timespec *__timeout,
+			const __sigset_t *__ss, __SIZE_TYPE__ __fdslen);
+extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
+					  const struct timespec *__timeout,
+					  const __sigset_t *__ss,
+					  __SIZE_TYPE__ __fdslen),
+		       __ppoll_chk)
+  __warnattr ("ppoll called with fds buffer too small file nfds entries");
+
+__fortify_function int
+ppoll (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout,
+       const __sigset_t *__ss)
+{
+  if (__bos (__fds) != (__SIZE_TYPE__) -1)
+    {
+      if (! __builtin_constant_p (__nfds))
+	return __ppoll_chk (__fds, __nfds, __timeout, __ss, __bos (__fds));
+      else if (__bos (__fds) / sizeof (*__fds) < __nfds)
+	return __ppoll_chk_warn (__fds, __nfds, __timeout, __ss,
+				 __bos (__fds));
+    }
+
+  return __ppoll_alias (__fds, __nfds, __timeout, __ss);
+}
+#endif
+
+__END_DECLS
diff --git a/REORG.TODO/io/bug-ftw1.c b/REORG.TODO/io/bug-ftw1.c
new file mode 100644
index 0000000000..29c3f7d531
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw1.c
@@ -0,0 +1,77 @@
+/* Test for ftw function searching in root directory.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ftw.h>
+#include <mcheck.h>
+#include <stdio.h>
+#include <string.h>
+
+
+int result;
+int cnt;
+int sawroot;
+
+
+static int
+callback (const char *fname, const struct stat *st, int flag)
+{
+  if (++cnt >= 10)
+    return 1;
+
+  printf ("%d: \"%s\" -> ", cnt, fname);
+  if (strcmp (fname, "/") == 0 && sawroot)
+    {
+      puts ("root directory reported twice");
+      result = 1;
+    }
+  else if (fname[0] != '/')
+    {
+      puts ("missing '/' as first character");
+      result = 1;
+    }
+  else if (fname[1] == '/')
+    {
+      puts ("double '/' at beginning");
+      result = 1;
+    }
+  else
+    {
+      puts ("OK");
+      sawroot |= strcmp (fname, "/") == 0;
+    }
+
+  return 0;
+}
+
+
+int
+main (void)
+{
+  mtrace ();
+
+  ftw ("/", callback, 10);
+
+  if (! sawroot)
+    {
+      puts ("root directory wasn't reported");
+      result = 1;
+    }
+
+  return result;
+}
diff --git a/REORG.TODO/io/bug-ftw2.c b/REORG.TODO/io/bug-ftw2.c
new file mode 100644
index 0000000000..ce8823d28e
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw2.c
@@ -0,0 +1,87 @@
+/* Test for ftw function searching in current directory.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ftw.h>
+#include <mcheck.h>
+#include <stdio.h>
+#include <string.h>
+
+
+int cnt;
+int result;
+int sawown;
+int sawcur;
+
+
+static int
+callback (const char *fname, const struct stat *st, int flag)
+{
+  printf ("%d: \"%s\" -> ", ++cnt, fname);
+  if (strcmp (fname, ".") == 0 && sawcur)
+    {
+      puts ("current directory reported twice");
+      result = 1;
+    }
+  else if (strcmp (fname, "./bug-ftw2.c") == 0 && sawown)
+    {
+      puts ("source file reported twice");
+      result = 1;
+    }
+  else if (fname[0] != '.')
+    {
+      puts ("missing '.' as first character");
+      result = 1;
+    }
+  else if (fname[1] != '\0' && fname[1] != '/')
+    {
+      puts ("no '/' in second position");
+      result = 1;
+    }
+  else
+    {
+      puts ("OK");
+      sawcur |= strcmp (fname, ".") == 0;
+      sawown |= strcmp (fname, "./bug-ftw2.c") == 0;
+    }
+
+  return 0;
+}
+
+
+int
+main (void)
+{
+  mtrace ();
+
+  ftw (".", callback, 10);
+
+  if (! sawcur)
+    {
+      puts ("current directory wasn't reported");
+      result = 1;
+    }
+
+  if (! sawown)
+    {
+      puts ("source file wasn't reported");
+      result = 1;
+    }
+
+  return result;
+}
diff --git a/REORG.TODO/io/bug-ftw3.c b/REORG.TODO/io/bug-ftw3.c
new file mode 100644
index 0000000000..19740f49f3
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw3.c
@@ -0,0 +1,69 @@
+#include <errno.h>
+#include <ftw.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static int cb_called;
+
+static int
+cb (const char *fname, const struct stat *st, int flag)
+{
+  printf ("%s %d\n", fname, flag);
+  cb_called = 1;
+  return 0;
+}
+
+int
+main (void)
+{
+  char tmp[] = "/tmp/ftwXXXXXX";
+  char tmp2[] = "/tmp/ftwXXXXXX/ftwXXXXXX";
+  char *dname;
+  char *dname2;
+  int r;
+  int e;
+
+  if (getuid () == 0)
+    {
+      puts ("this test needs to be run by ordinary user");
+      exit (0);
+    }
+
+  dname = mkdtemp (tmp);
+  if (dname == NULL)
+    {
+      printf ("mkdtemp: %m\n");
+      exit (1);
+    }
+
+  memcpy (tmp2, tmp, strlen (tmp));
+  dname2 = mkdtemp (tmp2);
+  if (dname2 == NULL)
+    {
+      printf ("mkdtemp: %m\n");
+      rmdir (dname);
+      exit (1);
+    }
+
+  if (chmod (dname, S_IWUSR|S_IWGRP|S_IWOTH) != 0)
+    {
+      printf ("chmod: %m\n");
+      rmdir (dname);
+      exit (1);
+    }
+
+  r = ftw (dname2, cb, 10);
+  e = errno;
+  printf ("r = %d", r);
+  if (r != 0)
+    printf (", errno = %d", errno);
+  puts ("");
+
+  chmod (dname, S_IRWXU|S_IRWXG|S_IRWXO);
+  rmdir (dname2);
+  rmdir (dname);
+
+  return (r != -1 && e == EACCES) || cb_called;
+}
diff --git a/REORG.TODO/io/bug-ftw4.c b/REORG.TODO/io/bug-ftw4.c
new file mode 100644
index 0000000000..9fca638937
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw4.c
@@ -0,0 +1,124 @@
+/* Test if ftw function doesn't leak fds.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <ftw.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static int cb_called;
+
+static int
+cb (const char *name, const struct stat64 *st, int type)
+{
+  return cb_called++ & 1;
+}
+
+int
+main (void)
+{
+  char name[32] = "/tmp/ftwXXXXXX", *p;
+  int ret, i, result = 0, fd, fd1, fd2;
+
+  if (mkdtemp (name) == NULL)
+    {
+      printf ("Couldn't make temporary directory: %m\n");
+      exit (EXIT_FAILURE);
+    }
+  p = strchr (name, '\0');
+  strcpy (p, "/1");
+  if (mkdir (name, 0755) < 0)
+    {
+      printf ("Couldn't make temporary subdirectory: %m\n");
+      exit (EXIT_FAILURE);
+    }
+  *p = '\0';
+
+  ret = ftw64 (name, cb, 20);
+  if (ret != 1)
+    {
+      printf ("ftw64 returned %d instead of 1", ret);
+      result = 1;
+    }
+
+  fd = open (name, O_RDONLY);
+  if (fd < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  fd1 = open (name, O_RDONLY);
+  if (fd1 < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  else
+    close (fd1);
+  if (fd >= 0)
+    close (fd);
+
+  for (i = 0; i < 128; ++i)
+    {
+      ret = ftw64 (name, cb, 20);
+      if (ret != 1)
+	{
+	  printf ("ftw64 returned %d instead of 1", ret);
+	  result = 1;
+	}
+    }
+
+  fd = open (name, O_RDONLY);
+  if (fd < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  fd2 = open (name, O_RDONLY);
+  if (fd2 < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  else
+    close (fd2);
+  if (fd >= 0)
+    close (fd);
+
+  if (fd2 >= fd1 + 128)
+    {
+      printf ("ftw64 leaking fds: %d -> %d\n", fd1, fd2);
+      result = 1;
+    }
+
+  if (cb_called != 129 * 2)
+    {
+      printf ("callback called %d times\n", cb_called);
+      result = 1;
+    }
+
+  strcpy (p, "/1");
+  rmdir (name);
+  *p = '\0';
+  rmdir (name);
+  return result;
+}
diff --git a/REORG.TODO/io/bug-ftw5.c b/REORG.TODO/io/bug-ftw5.c
new file mode 100644
index 0000000000..c1cd81d30e
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw5.c
@@ -0,0 +1,25 @@
+#include <errno.h>
+#include <ftw.h>
+#include <stdio.h>
+
+static int
+fn (const char *file, const struct stat *sb, int flag, struct FTW *s)
+{
+  puts (file);
+  return FTW_STOP;
+}
+
+static int
+do_test (void)
+{
+  if (nftw ("/", fn, 0, FTW_CHDIR | FTW_ACTIONRETVAL) < 0)
+    {
+      printf ("nftw / FTW_CHDIR: %m\n");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/REORG.TODO/io/chdir.c b/REORG.TODO/io/chdir.c
new file mode 100644
index 0000000000..7e11ed72cb
--- /dev/null
+++ b/REORG.TODO/io/chdir.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+/* Change the current directory to PATH.  */
+int
+__chdir (const char *path)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (chdir)
+
+weak_alias (__chdir, chdir)
diff --git a/REORG.TODO/io/chmod.c b/REORG.TODO/io/chmod.c
new file mode 100644
index 0000000000..0b85565ec2
--- /dev/null
+++ b/REORG.TODO/io/chmod.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+/* Change the protections of FILE to MODE.  */
+int
+__chmod (const char *file, mode_t mode)
+{
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (chmod)
+
+weak_alias (__chmod, chmod)
diff --git a/REORG.TODO/io/chown.c b/REORG.TODO/io/chown.c
new file mode 100644
index 0000000000..88712f43b0
--- /dev/null
+++ b/REORG.TODO/io/chown.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Change the owner and group of FILE.  */
+int
+__chown (const char *file, uid_t owner, gid_t group)
+{
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__chown)
+stub_warning (chown)
+
+weak_alias (__chown, chown)
diff --git a/REORG.TODO/io/close.c b/REORG.TODO/io/close.c
new file mode 100644
index 0000000000..f4f41086fd
--- /dev/null
+++ b/REORG.TODO/io/close.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Close the file descriptor FD.  */
+int
+__close (int fd)
+{
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__close)
+stub_warning (close)
+
+weak_alias (__close, close)
diff --git a/REORG.TODO/io/creat.c b/REORG.TODO/io/creat.c
new file mode 100644
index 0000000000..4e095d6877
--- /dev/null
+++ b/REORG.TODO/io/creat.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sysdep-cancel.h>
+
+#undef	creat
+
+/* Create FILE with protections MODE.  */
+int
+creat (const char *file, mode_t mode)
+{
+  return __open (file, O_WRONLY|O_CREAT|O_TRUNC, mode);
+}
+
+/* __open handles cancellation.  */
+LIBC_CANCEL_HANDLED ();
diff --git a/REORG.TODO/io/creat64.c b/REORG.TODO/io/creat64.c
new file mode 100644
index 0000000000..6bdbcb7e45
--- /dev/null
+++ b/REORG.TODO/io/creat64.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <sys/types.h>
+
+#undef	creat
+
+/* Create FILE with protections MODE.  */
+int
+creat64 (const char *file, mode_t mode)
+{
+  return __open64 (file, O_WRONLY|O_CREAT|O_TRUNC, mode);
+}
diff --git a/REORG.TODO/io/dup.c b/REORG.TODO/io/dup.c
new file mode 100644
index 0000000000..9bb58a94ab
--- /dev/null
+++ b/REORG.TODO/io/dup.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Duplicate FD, returning a new file descriptor open on the same file.  */
+int
+__dup (int fd)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (dup)
+
+weak_alias (__dup, dup)
diff --git a/REORG.TODO/io/dup2.c b/REORG.TODO/io/dup2.c
new file mode 100644
index 0000000000..cb17affc26
--- /dev/null
+++ b/REORG.TODO/io/dup2.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
+   open the same file as FD is.  Return FD2 or -1.  */
+int
+__dup2 (int fd, int fd2)
+{
+  if (fd < 0 || fd2 < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  if (fd == fd2)
+    /* No way to check that they are valid.  */
+    return fd2;
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__dup2)
+stub_warning (dup2)
+
+weak_alias (__dup2, dup2)
diff --git a/REORG.TODO/io/dup3.c b/REORG.TODO/io/dup3.c
new file mode 100644
index 0000000000..ae4fe4b2ba
--- /dev/null
+++ b/REORG.TODO/io/dup3.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2008-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
+   open the same file as FD is which setting flags according to
+   FLAGS.  Return FD2 or -1.  */
+int
+__dup3 (int fd, int fd2, int flags)
+{
+  if (fd < 0 || fd2 < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  if (fd == fd2)
+    /* No way to check that they are valid.  */
+    return fd2;
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__dup3)
+weak_alias (__dup3, dup3)
+stub_warning (dup3)
diff --git a/REORG.TODO/io/euidaccess.c b/REORG.TODO/io/euidaccess.c
new file mode 100644
index 0000000000..38112f7c5b
--- /dev/null
+++ b/REORG.TODO/io/euidaccess.c
@@ -0,0 +1,38 @@
+/* Test for access to FILE using effective UID and GID.  Stub version.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+int
+__euidaccess (const char *file, int type)
+{
+  if (file == NULL || (type & ~(R_OK|W_OK|X_OK|F_OK)) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__euidaccess, euidaccess)
+weak_alias (__euidaccess, eaccess)
+stub_warning (euidaccess)
+stub_warning (eaccess)
diff --git a/REORG.TODO/io/faccessat.c b/REORG.TODO/io/faccessat.c
new file mode 100644
index 0000000000..da6649048c
--- /dev/null
+++ b/REORG.TODO/io/faccessat.c
@@ -0,0 +1,44 @@
+/* Test for access to file, relative to open directory.  Stub version.
+   Copyright (C) 2006-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+int
+faccessat (int fd, const char *file, int type, int flag)
+{
+  if (file == NULL || (flag & ~(AT_SYMLINK_NOFOLLOW | AT_EACCESS)) != 0
+      || (type & ~(R_OK|W_OK|X_OK|F_OK)) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (faccessat)
diff --git a/REORG.TODO/io/fchdir.c b/REORG.TODO/io/fchdir.c
new file mode 100644
index 0000000000..1599b5a141
--- /dev/null
+++ b/REORG.TODO/io/fchdir.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+/* Change the current directory to FD.  */
+int
+__fchdir (int fd)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__fchdir, fchdir)
+
+stub_warning (fchdir)
diff --git a/REORG.TODO/io/fchmod.c b/REORG.TODO/io/fchmod.c
new file mode 100644
index 0000000000..05900f42dd
--- /dev/null
+++ b/REORG.TODO/io/fchmod.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+/* Change the permissions of the file referenced by FD to MODE.  */
+int
+__fchmod (int fd, mode_t mode)
+{
+  if (fd < 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fchmod)
+
+weak_alias (__fchmod, fchmod)
diff --git a/REORG.TODO/io/fchmodat.c b/REORG.TODO/io/fchmodat.c
new file mode 100644
index 0000000000..8bf05285c4
--- /dev/null
+++ b/REORG.TODO/io/fchmodat.c
@@ -0,0 +1,44 @@
+/* Change the protections of file relative to open directory.  Stub version.
+   Copyright (C) 2006-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+int
+fchmodat (int fd, const char *file, mode_t mode, int flag)
+{
+  if (file == NULL || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fchmodat)
diff --git a/REORG.TODO/io/fchown.c b/REORG.TODO/io/fchown.c
new file mode 100644
index 0000000000..d3b96911e8
--- /dev/null
+++ b/REORG.TODO/io/fchown.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Change the owner and group of the file referred to by FD.  */
+int
+__fchown (int fd, uid_t owner, gid_t group)
+{
+  if (fd < 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fchown)
+
+weak_alias (__fchown, fchown)
diff --git a/REORG.TODO/io/fchownat.c b/REORG.TODO/io/fchownat.c
new file mode 100644
index 0000000000..cf87ad676d
--- /dev/null
+++ b/REORG.TODO/io/fchownat.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Change the owner and group of FILE.  */
+int
+fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
+{
+  if (file == NULL || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fchownat)
diff --git a/REORG.TODO/io/fcntl.c b/REORG.TODO/io/fcntl.c
new file mode 100644
index 0000000000..d067650c43
--- /dev/null
+++ b/REORG.TODO/io/fcntl.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+
+/* Perform file control operations on FD.  */
+int
+__fcntl (int fd, int cmd, ...)
+{
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__fcntl)
+stub_warning (fcntl)
+
+weak_alias (__fcntl, fcntl)
diff --git a/REORG.TODO/io/fcntl.h b/REORG.TODO/io/fcntl.h
new file mode 100644
index 0000000000..a6ccb90a15
--- /dev/null
+++ b/REORG.TODO/io/fcntl.h
@@ -0,0 +1,318 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	POSIX Standard: 6.5 File Control Operations	<fcntl.h>
+ */
+
+#ifndef	_FCNTL_H
+#define	_FCNTL_H	1
+
+#include <features.h>
+
+/* This must be early so <bits/fcntl.h> can define types winningly.  */
+__BEGIN_DECLS
+
+/* Get __mode_t, __dev_t and __off_t  .*/
+#include <bits/types.h>
+
+/* Get the definitions of O_*, F_*, FD_*: all the
+   numbers and flag bits for `open', `fcntl', et al.  */
+#include <bits/fcntl.h>
+
+/* Detect if open needs mode as a third argument (or for openat as a fourth
+   argument).  */
+#ifdef __O_TMPFILE
+# define __OPEN_NEEDS_MODE(oflag) \
+  (((oflag) & O_CREAT) != 0 || ((oflag) & __O_TMPFILE) == __O_TMPFILE)
+#else
+# define __OPEN_NEEDS_MODE(oflag) (((oflag) & O_CREAT) != 0)
+#endif
+
+/* POSIX.1-2001 specifies that these types are defined by <fcntl.h>.
+   Earlier POSIX standards permitted any type ending in `_t' to be defined
+   by any POSIX header, so we don't conditionalize the definitions here.  */
+#ifndef __mode_t_defined
+typedef __mode_t mode_t;
+# define __mode_t_defined
+#endif
+
+#ifndef __off_t_defined
+# ifndef __USE_FILE_OFFSET64
+typedef __off_t off_t;
+# else
+typedef __off64_t off_t;
+# endif
+# define __off_t_defined
+#endif
+
+#if defined __USE_LARGEFILE64 && !defined __off64_t_defined
+typedef __off64_t off64_t;
+# define __off64_t_defined
+#endif
+
+#ifndef __pid_t_defined
+typedef __pid_t pid_t;
+# define __pid_t_defined
+#endif
+
+/* For XPG all symbols from <sys/stat.h> should also be available.  */
+#ifdef __USE_XOPEN2K8
+# include <bits/types/struct_timespec.h>
+#endif
+#if defined __USE_XOPEN || defined __USE_XOPEN2K8
+# include <bits/stat.h>
+
+# define S_IFMT		__S_IFMT
+# define S_IFDIR	__S_IFDIR
+# define S_IFCHR	__S_IFCHR
+# define S_IFBLK	__S_IFBLK
+# define S_IFREG	__S_IFREG
+# ifdef __S_IFIFO
+#  define S_IFIFO	__S_IFIFO
+# endif
+# ifdef __S_IFLNK
+#  define S_IFLNK	__S_IFLNK
+# endif
+# if (defined __USE_UNIX98 || defined __USE_XOPEN2K8) && defined __S_IFSOCK
+#  define S_IFSOCK	__S_IFSOCK
+# endif
+
+/* Protection bits.  */
+
+# define S_ISUID	__S_ISUID       /* Set user ID on execution.  */
+# define S_ISGID	__S_ISGID       /* Set group ID on execution.  */
+
+# if defined __USE_MISC || defined __USE_XOPEN
+/* Save swapped text after use (sticky bit).  This is pretty well obsolete.  */
+#  define S_ISVTX	__S_ISVTX
+# endif
+
+# define S_IRUSR	__S_IREAD       /* Read by owner.  */
+# define S_IWUSR	__S_IWRITE      /* Write by owner.  */
+# define S_IXUSR	__S_IEXEC       /* Execute by owner.  */
+/* Read, write, and execute by owner.  */
+# define S_IRWXU	(__S_IREAD|__S_IWRITE|__S_IEXEC)
+
+# define S_IRGRP	(S_IRUSR >> 3)  /* Read by group.  */
+# define S_IWGRP	(S_IWUSR >> 3)  /* Write by group.  */
+# define S_IXGRP	(S_IXUSR >> 3)  /* Execute by group.  */
+/* Read, write, and execute by group.  */
+# define S_IRWXG	(S_IRWXU >> 3)
+
+# define S_IROTH	(S_IRGRP >> 3)  /* Read by others.  */
+# define S_IWOTH	(S_IWGRP >> 3)  /* Write by others.  */
+# define S_IXOTH	(S_IXGRP >> 3)  /* Execute by others.  */
+/* Read, write, and execute by others.  */
+# define S_IRWXO	(S_IRWXG >> 3)
+#endif
+
+#ifdef	__USE_MISC
+# ifndef R_OK			/* Verbatim from <unistd.h>.  Ugh.  */
+/* Values for the second argument to access.
+   These may be OR'd together.  */
+#  define R_OK	4		/* Test for read permission.  */
+#  define W_OK	2		/* Test for write permission.  */
+#  define X_OK	1		/* Test for execute permission.  */
+#  define F_OK	0		/* Test for existence.  */
+# endif
+#endif /* Use misc.  */
+
+/* XPG wants the following symbols.   <stdio.h> has the same definitions.  */
+#if defined __USE_XOPEN || defined __USE_XOPEN2K8
+# define SEEK_SET	0	/* Seek from beginning of file.  */
+# define SEEK_CUR	1	/* Seek from current position.  */
+# define SEEK_END	2	/* Seek from end of file.  */
+#endif	/* XPG */
+
+/* The constants AT_REMOVEDIR and AT_EACCESS have the same value.  AT_EASSESS
+   is meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to
+   unlinkat.  The two functions do completely different things and therefore,
+   the flags can be allowed to overlap.  For example, passing AT_REMOVEDIR to
+   faccessat would be undefined behavior and thus treating it equivalent to
+   AT_EACCESS is valid undefined behavior.  */
+#ifdef __USE_ATFILE
+# define AT_FDCWD		-100	/* Special value used to indicate
+					   the *at functions should use the
+					   current working directory. */
+# define AT_SYMLINK_NOFOLLOW	0x100	/* Do not follow symbolic links.  */
+# define AT_REMOVEDIR		0x200	/* Remove directory instead of
+					   unlinking file.  */
+# define AT_SYMLINK_FOLLOW	0x400	/* Follow symbolic links.  */
+# ifdef __USE_GNU
+#  define AT_NO_AUTOMOUNT	0x800	/* Suppress terminal automount
+					   traversal.  */
+#  define AT_EMPTY_PATH		0x1000	/* Allow empty relative pathname.  */
+# endif
+# define AT_EACCESS		0x200	/* Test access permitted for
+					   effective IDs, not real IDs.  */
+#endif
+
+/* Do the file control operation described by CMD on FD.
+   The remaining arguments are interpreted depending on CMD.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int fcntl (int __fd, int __cmd, ...);
+
+/* Open FILE and return a new file descriptor for it, or -1 on error.
+   OFLAG determines the type of access used.  If O_CREAT or O_TMPFILE is set
+   in OFLAG, the third argument is taken as a `mode_t', the mode of the
+   created file.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+#ifndef __USE_FILE_OFFSET64
+extern int open (const char *__file, int __oflag, ...) __nonnull ((1));
+#else
+# ifdef __REDIRECT
+extern int __REDIRECT (open, (const char *__file, int __oflag, ...), open64)
+     __nonnull ((1));
+# else
+#  define open open64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int open64 (const char *__file, int __oflag, ...) __nonnull ((1));
+#endif
+
+#ifdef __USE_ATFILE
+/* Similar to `open' but a relative path name is interpreted relative to
+   the directory for which FD is a descriptor.
+
+   NOTE: some other `openat' implementation support additional functionality
+   through this interface, especially using the O_XATTR flag.  This is not
+   yet supported here.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int openat (int __fd, const char *__file, int __oflag, ...)
+     __nonnull ((2));
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (openat, (int __fd, const char *__file, int __oflag,
+				...), openat64) __nonnull ((2));
+#  else
+#   define openat openat64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int openat64 (int __fd, const char *__file, int __oflag, ...)
+     __nonnull ((2));
+# endif
+#endif
+
+/* Create and open FILE, with mode MODE.  This takes an `int' MODE
+   argument because that is what `mode_t' will be widened to.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+#ifndef __USE_FILE_OFFSET64
+extern int creat (const char *__file, mode_t __mode) __nonnull ((1));
+#else
+# ifdef __REDIRECT
+extern int __REDIRECT (creat, (const char *__file, mode_t __mode),
+		       creat64) __nonnull ((1));
+# else
+#  define creat creat64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int creat64 (const char *__file, mode_t __mode) __nonnull ((1));
+#endif
+
+#if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \
+					       && !defined __USE_POSIX))
+/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
+   files consistent.  Some systems have them there and some here, and some
+   software depends on the macros being defined without including both.  */
+
+/* `lockf' is a simpler interface to the locking facilities of `fcntl'.
+   LEN is always relative to the current file position.
+   The CMD argument is one of the following.  */
+
+# define F_ULOCK 0	/* Unlock a previously locked region.  */
+# define F_LOCK  1	/* Lock a region for exclusive use.  */
+# define F_TLOCK 2	/* Test and lock a region for exclusive use.  */
+# define F_TEST  3	/* Test a region for other processes locks.  */
+
+# ifndef __USE_FILE_OFFSET64
+extern int lockf (int __fd, int __cmd, off_t __len);
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (lockf, (int __fd, int __cmd, __off64_t __len), lockf64);
+#  else
+#   define lockf lockf64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int lockf64 (int __fd, int __cmd, off64_t __len);
+# endif
+#endif
+
+#ifdef __USE_XOPEN2K
+/* Advice the system about the expected behaviour of the application with
+   respect to the file associated with FD.  */
+# ifndef __USE_FILE_OFFSET64
+extern int posix_fadvise (int __fd, off_t __offset, off_t __len,
+			  int __advise) __THROW;
+# else
+ # ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (posix_fadvise, (int __fd, __off64_t __offset,
+					   __off64_t __len, int __advise),
+			   posix_fadvise64);
+#  else
+#   define posix_fadvise posix_fadvise64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int posix_fadvise64 (int __fd, off64_t __offset, off64_t __len,
+			    int __advise) __THROW;
+# endif
+
+
+/* Reserve storage for the data of the file associated with FD.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int posix_fallocate (int __fd, off_t __offset, off_t __len);
+# else
+ # ifdef __REDIRECT
+extern int __REDIRECT (posix_fallocate, (int __fd, __off64_t __offset,
+					 __off64_t __len),
+		       posix_fallocate64);
+#  else
+#   define posix_fallocate posix_fallocate64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int posix_fallocate64 (int __fd, off64_t __offset, off64_t __len);
+# endif
+#endif
+
+
+/* Define some inlines helping to catch common problems.  */
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function \
+    && defined __va_arg_pack_len
+# include <bits/fcntl2.h>
+#endif
+
+__END_DECLS
+
+#endif /* fcntl.h  */
diff --git a/REORG.TODO/io/flock.c b/REORG.TODO/io/flock.c
new file mode 100644
index 0000000000..9ead1304f1
--- /dev/null
+++ b/REORG.TODO/io/flock.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/file.h>
+
+/* Apply or remove an advisory lock, according to OPERATION,
+   on the file FD refers to.  */
+int
+__flock (int fd, int operation)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+weak_alias (__flock, flock)
+
+stub_warning (flock)
diff --git a/REORG.TODO/io/fstat.c b/REORG.TODO/io/fstat.c
new file mode 100644
index 0000000000..1d8c85d7dc
--- /dev/null
+++ b/REORG.TODO/io/fstat.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef fstat
+#undef __fstat
+int
+attribute_hidden
+__fstat (int fd, struct stat *buf)
+{
+  return __fxstat (_STAT_VER, fd, buf);
+}
+
+weak_hidden_alias (__fstat, fstat)
diff --git a/REORG.TODO/io/fstat64.c b/REORG.TODO/io/fstat64.c
new file mode 100644
index 0000000000..69c80e5e45
--- /dev/null
+++ b/REORG.TODO/io/fstat64.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef fstat64
+int
+attribute_hidden
+fstat64 (int fd, struct stat64 *buf)
+{
+  return __fxstat64 (_STAT_VER, fd, buf);
+}
diff --git a/REORG.TODO/io/fstatat.c b/REORG.TODO/io/fstatat.c
new file mode 100644
index 0000000000..4b2060e590
--- /dev/null
+++ b/REORG.TODO/io/fstatat.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef fstatat
+int
+attribute_hidden
+fstatat (int fd, const char *file, struct stat *buf, int flag)
+{
+  return __fxstatat (_STAT_VER, fd, file, buf, flag);
+}
diff --git a/REORG.TODO/io/fstatat64.c b/REORG.TODO/io/fstatat64.c
new file mode 100644
index 0000000000..13a9ebc870
--- /dev/null
+++ b/REORG.TODO/io/fstatat64.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef fstatat64
+int
+attribute_hidden
+fstatat64 (int fd, const char *file, struct stat64 *buf, int flag)
+{
+  return __fxstatat64 (_STAT_VER, fd, file, buf, flag);
+}
diff --git a/REORG.TODO/io/fstatfs.c b/REORG.TODO/io/fstatfs.c
new file mode 100644
index 0000000000..f0a537a9fa
--- /dev/null
+++ b/REORG.TODO/io/fstatfs.c
@@ -0,0 +1,32 @@
+/* Return information about the filesystem on which FD resides.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statfs.h>
+#include <stddef.h>
+
+/* Return information about the filesystem on which FD resides.  */
+int
+__fstatfs (int fd, struct statfs *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fstatfs)
+
+weak_alias (__fstatfs, fstatfs)
diff --git a/REORG.TODO/io/fstatfs64.c b/REORG.TODO/io/fstatfs64.c
new file mode 100644
index 0000000000..be05550368
--- /dev/null
+++ b/REORG.TODO/io/fstatfs64.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statfs.h>
+
+/* Return information about the filesystem on which FD resides.  */
+int
+__fstatfs64 (int fd, struct statfs64 *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__fstatfs64, fstatfs64)
+
+stub_warning (fstatfs64)
diff --git a/REORG.TODO/io/fstatvfs.c b/REORG.TODO/io/fstatvfs.c
new file mode 100644
index 0000000000..344aee229d
--- /dev/null
+++ b/REORG.TODO/io/fstatvfs.c
@@ -0,0 +1,31 @@
+/* Return information about the filesystem on which FD resides.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statvfs.h>
+
+/* Return information about the filesystem on which FD resides.  */
+int
+__fstatvfs (int fd, struct statvfs *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fstatvfs)
+weak_alias (__fstatvfs, fstatvfs)
+libc_hidden_weak (fstatvfs)
diff --git a/REORG.TODO/io/fstatvfs64.c b/REORG.TODO/io/fstatvfs64.c
new file mode 100644
index 0000000000..cbc78bd88b
--- /dev/null
+++ b/REORG.TODO/io/fstatvfs64.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statvfs.h>
+
+/* Return information about the filesystem on which FD resides.  */
+int
+__fstatvfs64 (int fd, struct statvfs64 *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__fstatvfs64, fstatvfs64)
+
+stub_warning (fstatvfs64)
diff --git a/REORG.TODO/io/fts.c b/REORG.TODO/io/fts.c
new file mode 100644
index 0000000000..b68a51f333
--- /dev/null
+++ b/REORG.TODO/io/fts.c
@@ -0,0 +1,1146 @@
+/* File tree traversal functions.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fts.c	8.6 (Berkeley) 8/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <include/sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fts.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Largest alignment size needed, minus one.
+   Usually long double is the worst case.  */
+#ifndef ALIGNBYTES
+#define ALIGNBYTES	(__alignof__ (long double) - 1)
+#endif
+/* Align P to that size.  */
+#ifndef ALIGN
+#define	ALIGN(p)	(((unsigned long int) (p) + ALIGNBYTES) & ~ALIGNBYTES)
+#endif
+
+
+/* Support for the LFS API version.  */
+#ifndef FTS_OPEN
+#define FTS_OPEN fts_open
+#define FTS_CLOSE fts_close
+#define FTS_READ fts_read
+#define FTS_SET fts_set
+#define FTS_CHILDREN fts_children
+# define FTSOBJ FTS
+# define FTSENTRY FTSENT
+# define INO_T ino_t
+# define STAT stat
+# define LSTAT lstat
+#endif
+
+static FTSENTRY	*fts_alloc (FTSOBJ *, const char *, size_t) internal_function;
+static FTSENTRY	*fts_build (FTSOBJ *, int) internal_function;
+static void	 fts_lfree (FTSENTRY *) internal_function;
+static void	 fts_load (FTSOBJ *, FTSENTRY *) internal_function;
+static size_t	 fts_maxarglen (char * const *) internal_function;
+static void	 fts_padjust (FTSOBJ *, FTSENTRY *) internal_function;
+static int	 fts_palloc (FTSOBJ *, size_t) internal_function;
+static FTSENTRY	*fts_sort (FTSOBJ *, FTSENTRY *, int) internal_function;
+static u_short	 fts_stat (FTSOBJ *, FTSENTRY *, int) internal_function;
+static int      fts_safe_changedir (FTSOBJ *, FTSENTRY *, int, const char *)
+     internal_function;
+
+#ifndef MAX
+#define MAX(a, b)	({ __typeof__ (a) _a = (a); \
+			   __typeof__ (b) _b = (b); \
+			   _a > _b ? _a : _b; })
+#endif
+
+#define	ISDOT(a)	(a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
+
+#define CLR(opt)	(sp->fts_options &= ~(opt))
+#define	ISSET(opt)	(sp->fts_options & (opt))
+#define	SET(opt)	(sp->fts_options |= (opt))
+
+#define	FCHDIR(sp, fd)	(!ISSET(FTS_NOCHDIR) && __fchdir(fd))
+
+/* fts_build flags */
+#define	BCHILD		1		/* fts_children */
+#define	BNAMES		2		/* fts_children, names only */
+#define	BREAD		3		/* fts_read */
+
+FTSOBJ *
+FTS_OPEN (char * const *argv, int options,
+	  int (*compar) (const FTSENTRY **, const FTSENTRY **))
+{
+	FTSOBJ *sp;
+	FTSENTRY *p, *root;
+	int nitems;
+	FTSENTRY *parent = NULL;
+	FTSENTRY *tmp;
+
+	/* Options check. */
+	if (options & ~FTS_OPTIONMASK) {
+		__set_errno (EINVAL);
+		return (NULL);
+	}
+
+	/* Allocate/initialize the stream */
+	if ((sp = malloc((u_int)sizeof(FTSOBJ))) == NULL)
+		return (NULL);
+	memset(sp, 0, sizeof(FTSOBJ));
+	sp->fts_compar = (int (*) (const void *, const void *)) compar;
+	sp->fts_options = options;
+
+	/* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+	if (ISSET(FTS_LOGICAL))
+		SET(FTS_NOCHDIR);
+
+	/*
+	 * Start out with 1K of path space, and enough, in any case,
+	 * to hold the user's paths.
+	 */
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 1024
+#endif
+	size_t maxarglen = fts_maxarglen(argv);
+	if (fts_palloc(sp, MAX(maxarglen, MAXPATHLEN)))
+		goto mem1;
+
+	/* Allocate/initialize root's parent. */
+	if (*argv != NULL) {
+		if ((parent = fts_alloc(sp, "", 0)) == NULL)
+			goto mem2;
+		parent->fts_level = FTS_ROOTPARENTLEVEL;
+	  }
+
+	/* Allocate/initialize root(s). */
+	for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) {
+		/* Don't allow zero-length paths. */
+		size_t len = strlen(*argv);
+		if (len == 0) {
+			__set_errno (ENOENT);
+			goto mem3;
+		}
+
+		p = fts_alloc(sp, *argv, len);
+		p->fts_level = FTS_ROOTLEVEL;
+		p->fts_parent = parent;
+		p->fts_accpath = p->fts_name;
+		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW));
+
+		/* Command-line "." and ".." are real directories. */
+		if (p->fts_info == FTS_DOT)
+			p->fts_info = FTS_D;
+
+		/*
+		 * If comparison routine supplied, traverse in sorted
+		 * order; otherwise traverse in the order specified.
+		 */
+		if (compar) {
+			p->fts_link = root;
+			root = p;
+		} else {
+			p->fts_link = NULL;
+			if (root == NULL)
+				tmp = root = p;
+			else {
+				tmp->fts_link = p;
+				tmp = p;
+			}
+		}
+	}
+	if (compar && nitems > 1)
+		root = fts_sort(sp, root, nitems);
+
+	/*
+	 * Allocate a dummy pointer and make fts_read think that we've just
+	 * finished the node before the root(s); set p->fts_info to FTS_INIT
+	 * so that everything about the "current" node is ignored.
+	 */
+	if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+		goto mem3;
+	sp->fts_cur->fts_link = root;
+	sp->fts_cur->fts_info = FTS_INIT;
+
+	/*
+	 * If using chdir(2), grab a file descriptor pointing to dot to ensure
+	 * that we can get back here; this could be avoided for some paths,
+	 * but almost certainly not worth the effort.  Slashes, symbolic links,
+	 * and ".." are all fairly nasty problems.  Note, if we can't get the
+	 * descriptor we run anyway, just more slowly.
+	 */
+	if (!ISSET(FTS_NOCHDIR)
+	    && (sp->fts_rfd = __open(".", O_RDONLY, 0)) < 0)
+		SET(FTS_NOCHDIR);
+
+	return (sp);
+
+mem3:	fts_lfree(root);
+	free(parent);
+mem2:	free(sp->fts_path);
+mem1:	free(sp);
+	return (NULL);
+}
+
+static void
+internal_function
+fts_load (FTSOBJ *sp, FTSENTRY *p)
+{
+	int len;
+	char *cp;
+
+	/*
+	 * Load the stream structure for the next traversal.  Since we don't
+	 * actually enter the directory until after the preorder visit, set
+	 * the fts_accpath field specially so the chdir gets done to the right
+	 * place and the user can access the first node.  From fts_open it's
+	 * known that the path will fit.
+	 */
+	len = p->fts_pathlen = p->fts_namelen;
+	memmove(sp->fts_path, p->fts_name, len + 1);
+	if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+		len = strlen(++cp);
+		memmove(p->fts_name, cp, len + 1);
+		p->fts_namelen = len;
+	}
+	p->fts_accpath = p->fts_path = sp->fts_path;
+	sp->fts_dev = p->fts_dev;
+}
+
+int
+FTS_CLOSE (FTSOBJ *sp)
+{
+	FTSENTRY *freep, *p;
+	int saved_errno;
+
+	/*
+	 * This still works if we haven't read anything -- the dummy structure
+	 * points to the root list, so we step through to the end of the root
+	 * list which has a valid parent pointer.
+	 */
+	if (sp->fts_cur) {
+		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+			freep = p;
+			p = p->fts_link != NULL ? p->fts_link : p->fts_parent;
+			free(freep);
+		}
+		free(p);
+	}
+
+	/* Free up child linked list, sort array, path buffer. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+	free(sp->fts_array);
+	free(sp->fts_path);
+
+	/* Return to original directory, save errno if necessary. */
+	if (!ISSET(FTS_NOCHDIR)) {
+		saved_errno = __fchdir(sp->fts_rfd) ? errno : 0;
+		(void)__close(sp->fts_rfd);
+
+		/* Set errno and return. */
+		if (saved_errno != 0) {
+			/* Free up the stream pointer. */
+			free(sp);
+			__set_errno (saved_errno);
+			return (-1);
+		}
+	}
+
+	/* Free up the stream pointer. */
+	free(sp);
+	return (0);
+}
+
+/*
+ * Special case of "/" at the end of the path so that slashes aren't
+ * appended which would cause paths to be written as "....//foo".
+ */
+#define	NAPPEND(p)							\
+	(p->fts_path[p->fts_pathlen - 1] == '/'				\
+	    ? p->fts_pathlen - 1 : p->fts_pathlen)
+
+FTSENTRY *
+FTS_READ (FTSOBJ *sp)
+{
+	FTSENTRY *p, *tmp;
+	int instr;
+	char *t;
+	int saved_errno;
+
+	/* If finished or unrecoverable error, return NULL. */
+	if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/* Save and zero out user instructions. */
+	instr = p->fts_instr;
+	p->fts_instr = FTS_NOINSTR;
+
+	/* Any type of file may be re-visited; re-stat and re-turn. */
+	if (instr == FTS_AGAIN) {
+		p->fts_info = fts_stat(sp, p, 0);
+		return (p);
+	}
+
+	/*
+	 * Following a symlink -- SLNONE test allows application to see
+	 * SLNONE and recover.  If indirecting through a symlink, have
+	 * keep a pointer to current location.  If unable to get that
+	 * pointer, follow fails.
+	 */
+	if (instr == FTS_FOLLOW &&
+	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+		p->fts_info = fts_stat(sp, p, 1);
+		if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+			if ((p->fts_symfd = __open(".", O_RDONLY, 0)) < 0) {
+				p->fts_errno = errno;
+				p->fts_info = FTS_ERR;
+			} else
+				p->fts_flags |= FTS_SYMFOLLOW;
+		}
+		return (p);
+	}
+
+	/* Directory in pre-order. */
+	if (p->fts_info == FTS_D) {
+		/* If skipped or crossed mount point, do post-order visit. */
+		if (instr == FTS_SKIP ||
+		    (ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) {
+			if (p->fts_flags & FTS_SYMFOLLOW)
+				(void)__close(p->fts_symfd);
+			if (sp->fts_child) {
+				fts_lfree(sp->fts_child);
+				sp->fts_child = NULL;
+			}
+			p->fts_info = FTS_DP;
+			return (p);
+		}
+
+		/* Rebuild if only read the names and now traversing. */
+		if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) {
+			CLR(FTS_NAMEONLY);
+			fts_lfree(sp->fts_child);
+			sp->fts_child = NULL;
+		}
+
+		/*
+		 * Cd to the subdirectory.
+		 *
+		 * If have already read and now fail to chdir, whack the list
+		 * to make the names come out right, and set the parent errno
+		 * so the application will eventually get an error condition.
+		 * Set the FTS_DONTCHDIR flag so that when we logically change
+		 * directories back to the parent we don't do a chdir.
+		 *
+		 * If haven't read do so.  If the read fails, fts_build sets
+		 * FTS_STOP or the fts_info field of the node.
+		 */
+		if (sp->fts_child != NULL) {
+			if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
+				p->fts_errno = errno;
+				p->fts_flags |= FTS_DONTCHDIR;
+				for (p = sp->fts_child; p != NULL;
+				     p = p->fts_link)
+					p->fts_accpath =
+					    p->fts_parent->fts_accpath;
+			}
+		} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+			if (ISSET(FTS_STOP))
+				return (NULL);
+			return (p);
+		}
+		p = sp->fts_child;
+		sp->fts_child = NULL;
+		sp->fts_cur = p;
+		goto name;
+	}
+
+	/* Move to the next node on this level. */
+next:	tmp = p;
+	if ((p = p->fts_link) != NULL) {
+		sp->fts_cur = p;
+		free(tmp);
+
+		/*
+		 * If reached the top, return to the original directory (or
+		 * the root of the tree), and load the paths for the next root.
+		 */
+		if (p->fts_level == FTS_ROOTLEVEL) {
+			if (FCHDIR(sp, sp->fts_rfd)) {
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			fts_load(sp, p);
+			return p;
+		}
+
+		/*
+		 * User may have called fts_set on the node.  If skipped,
+		 * ignore.  If followed, get a file descriptor so we can
+		 * get back if necessary.
+		 */
+		if (p->fts_instr == FTS_SKIP)
+			goto next;
+		if (p->fts_instr == FTS_FOLLOW) {
+			p->fts_info = fts_stat(sp, p, 1);
+			if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
+				if ((p->fts_symfd =
+				    __open(".", O_RDONLY, 0)) < 0) {
+					p->fts_errno = errno;
+					p->fts_info = FTS_ERR;
+				} else
+					p->fts_flags |= FTS_SYMFOLLOW;
+			}
+			p->fts_instr = FTS_NOINSTR;
+		}
+
+name:		t = sp->fts_path + NAPPEND(p->fts_parent);
+		*t++ = '/';
+		memmove(t, p->fts_name, p->fts_namelen + 1);
+		return p;
+	}
+
+	/* Move up to the parent node. */
+	p = tmp->fts_parent;
+	sp->fts_cur = p;
+	free(tmp);
+
+	if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+		/*
+		 * Done; free everything up and set errno to 0 so the user
+		 * can distinguish between error and EOF.
+		 */
+		free(p);
+		__set_errno (0);
+		return (sp->fts_cur = NULL);
+	}
+
+	/* NUL terminate the pathname. */
+	sp->fts_path[p->fts_pathlen] = '\0';
+
+	/*
+	 * Return to the parent directory.  If at a root node or came through
+	 * a symlink, go back through the file descriptor.  Otherwise, cd up
+	 * one directory.
+	 */
+	if (p->fts_level == FTS_ROOTLEVEL) {
+		if (FCHDIR(sp, sp->fts_rfd)) {
+			SET(FTS_STOP);
+			return (NULL);
+		}
+	} else if (p->fts_flags & FTS_SYMFOLLOW) {
+		if (FCHDIR(sp, p->fts_symfd)) {
+			saved_errno = errno;
+			(void)__close(p->fts_symfd);
+			__set_errno (saved_errno);
+			SET(FTS_STOP);
+			return (NULL);
+		}
+		(void)__close(p->fts_symfd);
+	} else if (!(p->fts_flags & FTS_DONTCHDIR) &&
+		   fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
+		SET(FTS_STOP);
+		return (NULL);
+	}
+	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+	return p;
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+FTS_SET (FTSOBJ *sp, FTSENTRY *p, int instr)
+{
+	if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
+		__set_errno (EINVAL);
+		return (1);
+	}
+	p->fts_instr = instr;
+	return (0);
+}
+
+FTSENTRY *
+FTS_CHILDREN(FTSOBJ *sp, int instr)
+{
+	FTSENTRY *p;
+	int fd;
+
+	if (instr != 0 && instr != FTS_NAMEONLY) {
+		__set_errno (EINVAL);
+		return (NULL);
+	}
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/*
+	 * Errno set to 0 so user can distinguish empty directory from
+	 * an error.
+	 */
+	__set_errno (0);
+
+	/* Fatal errors stop here. */
+	if (ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Return logical hierarchy of user's arguments. */
+	if (p->fts_info == FTS_INIT)
+		return (p->fts_link);
+
+	/*
+	 * If not a directory being visited in pre-order, stop here.  Could
+	 * allow FTS_DNR, assuming the user has fixed the problem, but the
+	 * same effect is available with FTS_AGAIN.
+	 */
+	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+		return (NULL);
+
+	/* Free up any previous child list. */
+	if (sp->fts_child != NULL)
+		fts_lfree(sp->fts_child);
+
+	if (instr == FTS_NAMEONLY) {
+		SET(FTS_NAMEONLY);
+		instr = BNAMES;
+	} else
+		instr = BCHILD;
+
+	/*
+	 * If using chdir on a relative path and called BEFORE fts_read does
+	 * its chdir to the root of a traversal, we can lose -- we need to
+	 * chdir into the subdirectory, and we don't know where the current
+	 * directory is, so we can't get back so that the upcoming chdir by
+	 * fts_read will work.
+	 */
+	if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+	    ISSET(FTS_NOCHDIR))
+		return (sp->fts_child = fts_build(sp, instr));
+
+	if ((fd = __open(".", O_RDONLY, 0)) < 0)
+		return (NULL);
+	sp->fts_child = fts_build(sp, instr);
+	if (__fchdir(fd))
+		return (NULL);
+	(void)__close(fd);
+	return (sp->fts_child);
+}
+
+static inline int
+dirent_not_directory(const struct dirent *dp)
+{
+#if defined DT_DIR && defined _DIRENT_HAVE_D_TYPE
+        return dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN;
+#else
+        return 0;
+#endif
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENTRY *
+internal_function
+fts_build (FTSOBJ *sp, int type)
+{
+	struct dirent *dp;
+	FTSENTRY *p, *head;
+	int nitems;
+	FTSENTRY *cur, *tail;
+	DIR *dirp;
+	void *oldaddr;
+	int cderrno, descend, len, level, nlinks, saved_errno,
+	    nostat, doadjust;
+	size_t maxlen;
+	char *cp;
+
+	/* Set current node pointer. */
+	cur = sp->fts_cur;
+
+	/*
+	 * Open the directory for reading.  If this fails, we're done.
+	 * If being called from fts_read, set the fts_info field.
+	 */
+#if defined FTS_WHITEOUT && 0
+	if (ISSET(FTS_WHITEOUT))
+		oflag = DTF_NODUP|DTF_REWIND;
+	else
+		oflag = DTF_HIDEW|DTF_NODUP|DTF_REWIND;
+#else
+# define __opendir2(path, flag) __opendir(path)
+#endif
+       if ((dirp = __opendir2(cur->fts_accpath, oflag)) == NULL) {
+		if (type == BREAD) {
+			cur->fts_info = FTS_DNR;
+			cur->fts_errno = errno;
+		}
+		return (NULL);
+	}
+
+	/*
+	 * Nlinks is the number of possible entries of type directory in the
+	 * directory if we're cheating on stat calls, 0 if we're not doing
+	 * any stat calls at all, -1 if we're doing stats on everything.
+	 */
+	if (type == BNAMES) {
+		nlinks = 0;
+		/* Be quiet about nostat, GCC. */
+		nostat = 0;
+	} else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) {
+		nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
+		nostat = 1;
+	} else {
+		nlinks = -1;
+		nostat = 0;
+	}
+
+#ifdef notdef
+	(void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink);
+	(void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+	    ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
+#endif
+	/*
+	 * If we're going to need to stat anything or we want to descend
+	 * and stay in the directory, chdir.  If this fails we keep going,
+	 * but set a flag so we don't chdir after the post-order visit.
+	 * We won't be able to stat anything, but we can still return the
+	 * names themselves.  Note, that since fts_read won't be able to
+	 * chdir into the directory, it will have to return different path
+	 * names than before, i.e. "a/b" instead of "b".  Since the node
+	 * has already been visited in pre-order, have to wait until the
+	 * post-order visit to return the error.  There is a special case
+	 * here, if there was nothing to stat then it's not an error to
+	 * not be able to stat.  This is all fairly nasty.  If a program
+	 * needed sorted entries or stat information, they had better be
+	 * checking FTS_NS on the returned nodes.
+	 */
+	cderrno = 0;
+	if (nlinks || type == BREAD) {
+		if (fts_safe_changedir(sp, cur, dirfd(dirp), NULL)) {
+			if (nlinks && type == BREAD)
+				cur->fts_errno = errno;
+			cur->fts_flags |= FTS_DONTCHDIR;
+			descend = 0;
+			cderrno = errno;
+			(void)__closedir(dirp);
+			dirp = NULL;
+		} else
+			descend = 1;
+	} else
+		descend = 0;
+
+	/*
+	 * Figure out the max file name length that can be stored in the
+	 * current path -- the inner loop allocates more path as necessary.
+	 * We really wouldn't have to do the maxlen calculations here, we
+	 * could do them in fts_read before returning the path, but it's a
+	 * lot easier here since the length is part of the dirent structure.
+	 *
+	 * If not changing directories set a pointer so that can just append
+	 * each new name into the path.
+	 */
+	len = NAPPEND(cur);
+	if (ISSET(FTS_NOCHDIR)) {
+		cp = sp->fts_path + len;
+		*cp++ = '/';
+	} else {
+		/* GCC, you're too verbose. */
+		cp = NULL;
+	}
+	len++;
+	maxlen = sp->fts_pathlen - len;
+
+	level = cur->fts_level + 1;
+
+	/* Read the directory, attaching each entry to the `link' pointer. */
+	doadjust = 0;
+	for (head = tail = NULL, nitems = 0; dirp && (dp = __readdir(dirp));) {
+		if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+			continue;
+
+		if ((p = fts_alloc(sp, dp->d_name, _D_EXACT_NAMLEN (dp))) == NULL)
+			goto mem1;
+		if (_D_EXACT_NAMLEN (dp) >= maxlen) {/* include space for NUL */
+			oldaddr = sp->fts_path;
+			if (fts_palloc(sp, _D_EXACT_NAMLEN (dp) + len + 1)) {
+				/*
+				 * No more memory for path or structures.  Save
+				 * errno, free up the current structure and the
+				 * structures already allocated.
+				 */
+mem1:				saved_errno = errno;
+				free(p);
+				fts_lfree(head);
+				(void)__closedir(dirp);
+				cur->fts_info = FTS_ERR;
+				SET(FTS_STOP);
+				__set_errno (saved_errno);
+				return (NULL);
+			}
+			/* Did realloc() change the pointer? */
+			if (oldaddr != sp->fts_path) {
+				doadjust = 1;
+				if (ISSET(FTS_NOCHDIR))
+					cp = sp->fts_path + len;
+			}
+			maxlen = sp->fts_pathlen - len;
+		}
+
+		if (len + _D_EXACT_NAMLEN (dp) >= USHRT_MAX) {
+			/*
+			 * In an FTSENT, fts_pathlen is a u_short so it is
+			 * possible to wraparound here.  If we do, free up
+			 * the current structure and the structures already
+			 * allocated, then error out with ENAMETOOLONG.
+			 */
+			free(p);
+			fts_lfree(head);
+			(void)__closedir(dirp);
+			cur->fts_info = FTS_ERR;
+			SET(FTS_STOP);
+			__set_errno (ENAMETOOLONG);
+			return (NULL);
+		}
+		p->fts_level = level;
+		p->fts_parent = sp->fts_cur;
+		p->fts_pathlen = len + _D_EXACT_NAMLEN (dp);
+
+#if defined FTS_WHITEOUT && 0
+		if (dp->d_type == DT_WHT)
+			p->fts_flags |= FTS_ISW;
+#endif
+
+		/* Unreachable code.  cderrno is only ever set to a nonnull
+		   value if dirp is closed at the same time.  But then we
+		   cannot enter this loop.  */
+		if (0 && cderrno) {
+			if (nlinks) {
+				p->fts_info = FTS_NS;
+				p->fts_errno = cderrno;
+			} else
+				p->fts_info = FTS_NSOK;
+			p->fts_accpath = cur->fts_accpath;
+		} else if (nlinks == 0
+                           || (nostat && dirent_not_directory(dp))) {
+			p->fts_accpath =
+			    ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+			p->fts_info = FTS_NSOK;
+		} else {
+			/* Build a file name for fts_stat to stat. */
+			if (ISSET(FTS_NOCHDIR)) {
+				p->fts_accpath = p->fts_path;
+				memmove(cp, p->fts_name, p->fts_namelen + 1);
+			} else
+				p->fts_accpath = p->fts_name;
+			/* Stat it. */
+			p->fts_info = fts_stat(sp, p, 0);
+
+			/* Decrement link count if applicable. */
+			if (nlinks > 0 && (p->fts_info == FTS_D ||
+			    p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+				--nlinks;
+		}
+
+		/* We walk in directory order so "ls -f" doesn't get upset. */
+		p->fts_link = NULL;
+		if (head == NULL)
+			head = tail = p;
+		else {
+			tail->fts_link = p;
+			tail = p;
+		}
+		++nitems;
+	}
+	if (dirp)
+		(void)__closedir(dirp);
+
+	/*
+	 * If realloc() changed the address of the path, adjust the
+	 * addresses for the rest of the tree and the dir list.
+	 */
+	if (doadjust)
+		fts_padjust(sp, head);
+
+	/*
+	 * If not changing directories, reset the path back to original
+	 * state.
+	 */
+	if (ISSET(FTS_NOCHDIR)) {
+		if (len == sp->fts_pathlen || nitems == 0)
+			--cp;
+		*cp = '\0';
+	}
+
+	/*
+	 * If descended after called from fts_children or after called from
+	 * fts_read and nothing found, get back.  At the root level we use
+	 * the saved fd; if one of fts_open()'s arguments is a relative path
+	 * to an empty directory, we wind up here with no other way back.  If
+	 * can't get back, we're done.
+	 */
+	if (descend && (type == BCHILD || !nitems) &&
+	    (cur->fts_level == FTS_ROOTLEVEL ?
+	     FCHDIR(sp, sp->fts_rfd) :
+	     fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
+		cur->fts_info = FTS_ERR;
+		SET(FTS_STOP);
+		fts_lfree(head);
+		return (NULL);
+	}
+
+	/* If didn't find anything, return NULL. */
+	if (!nitems) {
+		if (type == BREAD)
+			cur->fts_info = FTS_DP;
+		fts_lfree(head);
+		return (NULL);
+	}
+
+	/* Sort the entries. */
+	if (sp->fts_compar && nitems > 1)
+		head = fts_sort(sp, head, nitems);
+	return (head);
+}
+
+static u_short
+internal_function
+fts_stat (FTSOBJ *sp, FTSENTRY *p, int follow)
+{
+	FTSENTRY *t;
+	dev_t dev;
+	INO_T ino;
+	struct STAT *sbp, sb;
+	int saved_errno;
+
+	/* If user needs stat info, stat buffer already allocated. */
+	sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+#if defined FTS_WHITEOUT && 0
+	/* check for whiteout */
+	if (p->fts_flags & FTS_ISW) {
+		if (sbp != &sb) {
+			memset(sbp, '\0', sizeof (*sbp));
+			sbp->st_mode = S_IFWHT;
+		}
+		return (FTS_W);
+       }
+#endif
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2).  If that fails, check for a non-existent symlink.  If
+	 * fail, set the errno from the stat call.
+	 */
+	if (ISSET(FTS_LOGICAL) || follow) {
+		if (STAT(p->fts_accpath, sbp)) {
+			saved_errno = errno;
+			if (!LSTAT(p->fts_accpath, sbp)) {
+				__set_errno (0);
+				return (FTS_SLNONE);
+			}
+			p->fts_errno = saved_errno;
+			goto err;
+		}
+	} else if (LSTAT(p->fts_accpath, sbp)) {
+		p->fts_errno = errno;
+err:		memset(sbp, 0, sizeof(struct STAT));
+		return (FTS_NS);
+	}
+
+	if (S_ISDIR(sbp->st_mode)) {
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_name))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+		for (t = p->fts_parent;
+		    t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			if (ino == t->fts_ino && dev == t->fts_dev) {
+				p->fts_cycle = t;
+				return (FTS_DC);
+			}
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+static FTSENTRY *
+internal_function
+fts_sort (FTSOBJ *sp, FTSENTRY *head, int nitems)
+{
+	FTSENTRY **ap, *p;
+
+	/*
+	 * Construct an array of pointers to the structures and call qsort(3).
+	 * Reassemble the array in the order returned by qsort.  If unable to
+	 * sort for memory reasons, return the directory entries in their
+	 * current order.  Allocate enough space for the current needs plus
+	 * 40 so don't realloc one entry at a time.
+	 */
+	if (nitems > sp->fts_nitems) {
+		FTSENTRY **a;
+
+		sp->fts_nitems = nitems + 40;
+		if ((a = realloc(sp->fts_array,
+		    (size_t)(sp->fts_nitems * sizeof(FTSENTRY *)))) == NULL) {
+			free(sp->fts_array);
+			sp->fts_array = NULL;
+			sp->fts_nitems = 0;
+			return (head);
+		}
+		sp->fts_array = a;
+	}
+	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+		*ap++ = p;
+	qsort((void *)sp->fts_array, nitems, sizeof(FTSENTRY *), sp->fts_compar);
+	for (head = *(ap = sp->fts_array); --nitems; ++ap)
+		ap[0]->fts_link = ap[1];
+	ap[0]->fts_link = NULL;
+	return (head);
+}
+
+static FTSENTRY *
+internal_function
+fts_alloc (FTSOBJ *sp, const char *name, size_t namelen)
+{
+	FTSENTRY *p;
+	size_t len;
+
+	/*
+	 * The file name is a variable length array and no stat structure is
+	 * necessary if the user has set the nostat bit.  Allocate the FTSENT
+	 * structure, the file name and the stat structure in one chunk, but
+	 * be careful that the stat structure is reasonably aligned.  Since the
+	 * fts_name field is declared to be of size 1, the fts_name pointer is
+	 * namelen + 2 before the first possible address of the stat structure.
+	 */
+	len = sizeof(FTSENTRY) + namelen;
+	if (!ISSET(FTS_NOSTAT))
+		len += sizeof(struct STAT) + ALIGNBYTES;
+	if ((p = malloc(len)) == NULL)
+		return (NULL);
+
+	/* Copy the name and guarantee NUL termination. */
+	memmove(p->fts_name, name, namelen);
+	p->fts_name[namelen] = '\0';
+
+	if (!ISSET(FTS_NOSTAT))
+		p->fts_statp = (struct STAT *)ALIGN(p->fts_name + namelen + 2);
+	p->fts_namelen = namelen;
+	p->fts_path = sp->fts_path;
+	p->fts_errno = 0;
+	p->fts_flags = 0;
+	p->fts_instr = FTS_NOINSTR;
+	p->fts_number = 0;
+	p->fts_pointer = NULL;
+	return (p);
+}
+
+static void
+internal_function
+fts_lfree (FTSENTRY *head)
+{
+	FTSENTRY *p;
+
+	/* Free a linked list of structures. */
+	while ((p = head)) {
+		head = head->fts_link;
+		free(p);
+	}
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them.  Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+internal_function
+fts_palloc (FTSOBJ *sp, size_t more)
+{
+	char *p;
+
+	sp->fts_pathlen += more + 256;
+	/*
+	 * Check for possible wraparound.  In an FTS, fts_pathlen is
+	 * a signed int but in an FTSENT it is an unsigned short.
+	 * We limit fts_pathlen to USHRT_MAX to be safe in both cases.
+	 */
+	if (sp->fts_pathlen < 0 || sp->fts_pathlen >= USHRT_MAX) {
+		free(sp->fts_path);
+		sp->fts_path = NULL;
+		__set_errno (ENAMETOOLONG);
+		return (1);
+	}
+	p = realloc(sp->fts_path, sp->fts_pathlen);
+	if (p == NULL) {
+		free(sp->fts_path);
+		sp->fts_path = NULL;
+		return 1;
+	}
+	sp->fts_path = p;
+	return 0;
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+internal_function
+fts_padjust (FTSOBJ *sp, FTSENTRY *head)
+{
+	FTSENTRY *p;
+	char *addr = sp->fts_path;
+
+#define	ADJUST(p) do {							\
+	if ((p)->fts_accpath != (p)->fts_name) {			\
+		(p)->fts_accpath =					\
+		    (char *)addr + ((p)->fts_accpath - (p)->fts_path);	\
+	}								\
+	(p)->fts_path = addr;						\
+} while (0)
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUST(p);
+
+	/* Adjust the rest of the tree, including the current level. */
+	for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUST(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+static size_t
+internal_function
+fts_maxarglen (char * const *argv)
+{
+	size_t len, max;
+
+	for (max = 0; *argv; ++argv)
+		if ((len = strlen(*argv)) > max)
+			max = len;
+	return (max + 1);
+}
+
+/*
+ * Change to dir specified by fd or p->fts_accpath without getting
+ * tricked by someone changing the world out from underneath us.
+ * Assumes p->fts_dev and p->fts_ino are filled in.
+ */
+static int
+internal_function
+fts_safe_changedir (FTSOBJ *sp, FTSENTRY *p, int fd, const char *path)
+{
+	int ret, oerrno, newfd;
+	struct stat64 sb;
+
+	newfd = fd;
+	if (ISSET(FTS_NOCHDIR))
+		return (0);
+	if (fd < 0 && (newfd = __open(path, O_RDONLY, 0)) < 0)
+		return (-1);
+	if (__fxstat64(_STAT_VER, newfd, &sb)) {
+		ret = -1;
+		goto bail;
+	}
+	if (p->fts_dev != sb.st_dev || p->fts_ino != sb.st_ino) {
+		__set_errno (ENOENT);		/* disinformation */
+		ret = -1;
+		goto bail;
+	}
+	ret = __fchdir(newfd);
+bail:
+	oerrno = errno;
+	if (fd < 0)
+		(void)__close(newfd);
+	__set_errno (oerrno);
+	return (ret);
+}
diff --git a/REORG.TODO/io/fts.h b/REORG.TODO/io/fts.h
new file mode 100644
index 0000000000..ab15567001
--- /dev/null
+++ b/REORG.TODO/io/fts.h
@@ -0,0 +1,215 @@
+/* File tree traversal functions declarations.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fts.h	8.3 (Berkeley) 8/14/94
+ */
+
+#ifndef	_FTS_H
+#define	_FTS_H 1
+
+#include <features.h>
+#include <sys/types.h>
+
+
+typedef struct {
+	struct _ftsent *fts_cur;	/* current node */
+	struct _ftsent *fts_child;	/* linked list of children */
+	struct _ftsent **fts_array;	/* sort array */
+	dev_t fts_dev;			/* starting device # */
+	char *fts_path;			/* path for this descent */
+	int fts_rfd;			/* fd for root */
+	int fts_pathlen;		/* sizeof(path) */
+	int fts_nitems;			/* elements in the sort array */
+	int (*fts_compar) (const void *, const void *); /* compare fn */
+
+#define	FTS_COMFOLLOW	0x0001		/* follow command line symlinks */
+#define	FTS_LOGICAL	0x0002		/* logical walk */
+#define	FTS_NOCHDIR	0x0004		/* don't change directories */
+#define	FTS_NOSTAT	0x0008		/* don't get stat info */
+#define	FTS_PHYSICAL	0x0010		/* physical walk */
+#define	FTS_SEEDOT	0x0020		/* return dot and dot-dot */
+#define	FTS_XDEV	0x0040		/* don't cross devices */
+#define FTS_WHITEOUT	0x0080		/* return whiteout information */
+#define	FTS_OPTIONMASK	0x00ff		/* valid user option mask */
+
+#define	FTS_NAMEONLY	0x0100		/* (private) child names only */
+#define	FTS_STOP	0x0200		/* (private) unrecoverable error */
+	int fts_options;		/* fts_open options, global flags */
+} FTS;
+
+#ifdef __USE_LARGEFILE64
+typedef struct {
+	struct _ftsent64 *fts_cur;	/* current node */
+	struct _ftsent64 *fts_child;	/* linked list of children */
+	struct _ftsent64 **fts_array;	/* sort array */
+	dev_t fts_dev;			/* starting device # */
+	char *fts_path;			/* path for this descent */
+	int fts_rfd;			/* fd for root */
+	int fts_pathlen;		/* sizeof(path) */
+	int fts_nitems;			/* elements in the sort array */
+	int (*fts_compar) (const void *, const void *); /* compare fn */
+	int fts_options;		/* fts_open options, global flags */
+} FTS64;
+#endif
+
+typedef struct _ftsent {
+	struct _ftsent *fts_cycle;	/* cycle node */
+	struct _ftsent *fts_parent;	/* parent directory */
+	struct _ftsent *fts_link;	/* next file in directory */
+	long fts_number;	        /* local numeric value */
+	void *fts_pointer;	        /* local address value */
+	char *fts_accpath;		/* access path */
+	char *fts_path;			/* root path */
+	int fts_errno;			/* errno for this node */
+	int fts_symfd;			/* fd for symlink */
+	unsigned short fts_pathlen;	/* strlen(fts_path) */
+	unsigned short fts_namelen;	/* strlen(fts_name) */
+
+	ino_t fts_ino;			/* inode */
+	dev_t fts_dev;			/* device */
+	nlink_t fts_nlink;		/* link count */
+
+#define	FTS_ROOTPARENTLEVEL	-1
+#define	FTS_ROOTLEVEL		 0
+	short fts_level;		/* depth (-1 to N) */
+
+#define	FTS_D		 1		/* preorder directory */
+#define	FTS_DC		 2		/* directory that causes cycles */
+#define	FTS_DEFAULT	 3		/* none of the above */
+#define	FTS_DNR		 4		/* unreadable directory */
+#define	FTS_DOT		 5		/* dot or dot-dot */
+#define	FTS_DP		 6		/* postorder directory */
+#define	FTS_ERR		 7		/* error; errno is set */
+#define	FTS_F		 8		/* regular file */
+#define	FTS_INIT	 9		/* initialized only */
+#define	FTS_NS		10		/* stat(2) failed */
+#define	FTS_NSOK	11		/* no stat(2) requested */
+#define	FTS_SL		12		/* symbolic link */
+#define	FTS_SLNONE	13		/* symbolic link without target */
+#define FTS_W		14		/* whiteout object */
+	unsigned short fts_info;	/* user flags for FTSENT structure */
+
+#define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
+#define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
+	unsigned short fts_flags;	/* private flags for FTSENT structure */
+
+#define	FTS_AGAIN	 1		/* read node again */
+#define	FTS_FOLLOW	 2		/* follow symbolic link */
+#define	FTS_NOINSTR	 3		/* no instructions */
+#define	FTS_SKIP	 4		/* discard node */
+	unsigned short fts_instr;	/* fts_set() instructions */
+
+	struct stat *fts_statp;		/* stat(2) information */
+	char fts_name[1];		/* file name */
+} FTSENT;
+
+#ifdef __USE_LARGEFILE64
+typedef struct _ftsent64 {
+	struct _ftsent64 *fts_cycle;	/* cycle node */
+	struct _ftsent64 *fts_parent;	/* parent directory */
+	struct _ftsent64 *fts_link;	/* next file in directory */
+	long fts_number;	        /* local numeric value */
+	void *fts_pointer;	        /* local address value */
+	char *fts_accpath;		/* access path */
+	char *fts_path;			/* root path */
+	int fts_errno;			/* errno for this node */
+	int fts_symfd;			/* fd for symlink */
+	unsigned short fts_pathlen;		/* strlen(fts_path) */
+	unsigned short fts_namelen;		/* strlen(fts_name) */
+
+	ino64_t fts_ino;		/* inode */
+	dev_t fts_dev;			/* device */
+	nlink_t fts_nlink;		/* link count */
+
+	short fts_level;		/* depth (-1 to N) */
+
+	unsigned short fts_info;	/* user flags for FTSENT structure */
+
+	unsigned short fts_flags;	/* private flags for FTSENT structure */
+
+	unsigned short fts_instr;	/* fts_set() instructions */
+
+	struct stat64 *fts_statp;	/* stat(2) information */
+	char fts_name[1];		/* file name */
+} FTSENT64;
+#endif
+
+__BEGIN_DECLS
+#ifndef __USE_FILE_OFFSET64
+FTSENT	*fts_children (FTS *, int);
+int	 fts_close (FTS *);
+FTS	*fts_open (char * const *, int,
+		   int (*)(const FTSENT **, const FTSENT **));
+FTSENT	*fts_read (FTS *);
+int	 fts_set (FTS *, FTSENT *, int) __THROW;
+#else
+# ifdef __REDIRECT
+FTSENT	*__REDIRECT (fts_children, (FTS *, int), fts64_children);
+int	 __REDIRECT (fts_close, (FTS *), fts64_close);
+FTS	*__REDIRECT (fts_open, (char * const *, int,
+				int (*)(const FTSENT **, const FTSENT **)),
+		     fts64_open);
+FTSENT	*__REDIRECT (fts_read, (FTS *), fts64_read);
+int	 __REDIRECT_NTH (fts_set, (FTS *, FTSENT *, int), fts64_set);
+# else
+#  define fts_children fts64_children
+#  define fts_close fts64_close
+#  define fts_open fts64_open
+#  define fts_read fts64_read
+#  define fts_set fts64_set
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+FTSENT64 *fts64_children (FTS64 *, int);
+int	  fts64_close (FTS64 *);
+FTS64	 *fts64_open (char * const *, int,
+		      int (*)(const FTSENT64 **, const FTSENT64 **));
+FTSENT64 *fts64_read (FTS64 *);
+int	 fts64_set (FTS64 *, FTSENT64 *, int) __THROW;
+#endif
+__END_DECLS
+
+#endif /* fts.h */
diff --git a/REORG.TODO/io/fts64.c b/REORG.TODO/io/fts64.c
new file mode 100644
index 0000000000..5e623385f0
--- /dev/null
+++ b/REORG.TODO/io/fts64.c
@@ -0,0 +1,30 @@
+/* File tree traversal functions LFS version.
+   Copyright (C) 2015-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FTS_OPEN fts64_open
+#define FTS_CLOSE fts64_close
+#define FTS_READ fts64_read
+#define FTS_SET fts64_set
+#define FTS_CHILDREN fts64_children
+#define FTSOBJ FTS64
+#define FTSENTRY FTSENT64
+#define INO_T ino64_t
+#define STAT stat64
+#define LSTAT lstat64
+
+#include "fts.c"
diff --git a/REORG.TODO/io/ftw.c b/REORG.TODO/io/ftw.c
new file mode 100644
index 0000000000..140a237746
--- /dev/null
+++ b/REORG.TODO/io/ftw.c
@@ -0,0 +1,867 @@
+/* File tree walker functions.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if __GNUC__
+# define alloca __builtin_alloca
+#else
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #  pragma alloca
+#  else
+char *alloca ();
+#  endif
+# endif
+#endif
+
+#ifdef _LIBC
+# include <dirent.h>
+# define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)
+#else
+# if HAVE_DIRENT_H
+#  include <dirent.h>
+#  define NAMLEN(dirent) strlen ((dirent)->d_name)
+# else
+#  define dirent direct
+#  define NAMLEN(dirent) (dirent)->d_namlen
+#  if HAVE_SYS_NDIR_H
+#   include <sys/ndir.h>
+#  endif
+#  if HAVE_SYS_DIR_H
+#   include <sys/dir.h>
+#  endif
+#  if HAVE_NDIR_H
+#   include <ndir.h>
+#  endif
+# endif
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <ftw.h>
+#include <limits.h>
+#include <search.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <not-cancel.h>
+#include <sys/param.h>
+#ifdef _LIBC
+# include <include/sys/stat.h>
+#else
+# include <sys/stat.h>
+#endif
+
+#if ! _LIBC && !HAVE_DECL_STPCPY && !defined stpcpy
+char *stpcpy ();
+#endif
+
+#if ! _LIBC && ! defined HAVE_MEMPCPY && ! defined mempcpy
+/* Be CAREFUL that there are no side effects in N.  */
+# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
+#endif
+
+/* #define NDEBUG 1 */
+#include <assert.h>
+
+#ifndef _LIBC
+# undef __chdir
+# define __chdir chdir
+# undef __closedir
+# define __closedir closedir
+# undef __fchdir
+# define __fchdir fchdir
+# undef __getcwd
+# define __getcwd(P, N) xgetcwd ()
+extern char *xgetcwd (void);
+# undef __mempcpy
+# define __mempcpy mempcpy
+# undef __opendir
+# define __opendir opendir
+# undef __readdir64
+# define __readdir64 readdir
+# undef __stpcpy
+# define __stpcpy stpcpy
+# undef __tdestroy
+# define __tdestroy tdestroy
+# undef __tfind
+# define __tfind tfind
+# undef __tsearch
+# define __tsearch tsearch
+# undef internal_function
+# define internal_function /* empty */
+# undef dirent64
+# define dirent64 dirent
+# undef MAX
+# define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+/* Arrange to make lstat calls go through the wrapper function
+   on systems with an lstat function that does not dereference symlinks
+   that are specified with a trailing slash.  */
+#if ! _LIBC && ! LSTAT_FOLLOWS_SLASHED_SYMLINK
+int rpl_lstat (const char *, struct stat *);
+# undef lstat
+# define lstat(Name, Stat_buf) rpl_lstat(Name, Stat_buf)
+#endif
+
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+/* Support for the LFS API version.  */
+#ifndef FTW_NAME
+# define FTW_NAME ftw
+# define NFTW_NAME nftw
+# define NFTW_OLD_NAME __old_nftw
+# define NFTW_NEW_NAME __new_nftw
+# define INO_T ino_t
+# define STAT stat
+# ifdef _LIBC
+#  define LXSTAT __lxstat
+#  define XSTAT __xstat
+#  define FXSTATAT __fxstatat
+# else
+#  define LXSTAT(V,f,sb) lstat (f,sb)
+#  define XSTAT(V,f,sb) stat (f,sb)
+#  define FXSTATAT(V,d,f,sb,m) fstatat (d, f, sb, m)
+# endif
+# define FTW_FUNC_T __ftw_func_t
+# define NFTW_FUNC_T __nftw_func_t
+#endif
+
+/* We define PATH_MAX if the system does not provide a definition.
+   This does not artificially limit any operation.  PATH_MAX is simply
+   used as a guesstimate for the expected maximal path length.
+   Buffers will be enlarged if necessary.  */
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+struct dir_data
+{
+  DIR *stream;
+  int streamfd;
+  char *content;
+};
+
+struct known_object
+{
+  dev_t dev;
+  INO_T ino;
+};
+
+struct ftw_data
+{
+  /* Array with pointers to open directory streams.  */
+  struct dir_data **dirstreams;
+  size_t actdir;
+  size_t maxdir;
+
+  /* Buffer containing name of currently processed object.  */
+  char *dirbuf;
+  size_t dirbufsize;
+
+  /* Passed as fourth argument to `nftw' callback.  The `base' member
+     tracks the content of the `dirbuf'.  */
+  struct FTW ftw;
+
+  /* Flags passed to `nftw' function.  0 for `ftw'.  */
+  int flags;
+
+  /* Conversion array for flag values.  It is the identity mapping for
+     `nftw' calls, otherwise it maps the values to those known by
+     `ftw'.  */
+  const int *cvt_arr;
+
+  /* Callback function.  We always use the `nftw' form.  */
+  NFTW_FUNC_T func;
+
+  /* Device of starting point.  Needed for FTW_MOUNT.  */
+  dev_t dev;
+
+  /* Data structure for keeping fingerprints of already processed
+     object.  This is needed when not using FTW_PHYS.  */
+  void *known_objects;
+};
+
+
+/* Internally we use the FTW_* constants used for `nftw'.  When invoked
+   as `ftw', map each flag to the subset of values used by `ftw'.  */
+static const int nftw_arr[] =
+{
+  FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN
+};
+
+static const int ftw_arr[] =
+{
+  FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_F, FTW_D, FTW_NS
+};
+
+
+/* Forward declarations of local functions.  */
+static int ftw_dir (struct ftw_data *data, struct STAT *st,
+		    struct dir_data *old_dir) internal_function;
+
+
+static int
+object_compare (const void *p1, const void *p2)
+{
+  /* We don't need a sophisticated and useful comparison.  We are only
+     interested in equality.  However, we must be careful not to
+     accidentally compare `holes' in the structure.  */
+  const struct known_object *kp1 = p1, *kp2 = p2;
+  int cmp1;
+  cmp1 = (kp1->ino > kp2->ino) - (kp1->ino < kp2->ino);
+  if (cmp1 != 0)
+    return cmp1;
+  return (kp1->dev > kp2->dev) - (kp1->dev < kp2->dev);
+}
+
+
+static int
+add_object (struct ftw_data *data, struct STAT *st)
+{
+  struct known_object *newp = malloc (sizeof (struct known_object));
+  if (newp == NULL)
+    return -1;
+  newp->dev = st->st_dev;
+  newp->ino = st->st_ino;
+  return __tsearch (newp, &data->known_objects, object_compare) ? 0 : -1;
+}
+
+
+static inline int
+find_object (struct ftw_data *data, struct STAT *st)
+{
+  struct known_object obj;
+  obj.dev = st->st_dev;
+  obj.ino = st->st_ino;
+  return __tfind (&obj, &data->known_objects, object_compare) != NULL;
+}
+
+
+static inline int
+__attribute ((always_inline))
+open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
+{
+  int result = 0;
+
+  if (data->dirstreams[data->actdir] != NULL)
+    {
+      /* Oh, oh.  We must close this stream.  Get all remaining
+	 entries and store them as a list in the `content' member of
+	 the `struct dir_data' variable.  */
+      size_t bufsize = 1024;
+      char *buf = malloc (bufsize);
+
+      if (buf == NULL)
+	result = -1;
+      else
+	{
+	  DIR *st = data->dirstreams[data->actdir]->stream;
+	  struct dirent64 *d;
+	  size_t actsize = 0;
+
+	  while ((d = __readdir64 (st)) != NULL)
+	    {
+	      size_t this_len = NAMLEN (d);
+	      if (actsize + this_len + 2 >= bufsize)
+		{
+		  char *newp;
+		  bufsize += MAX (1024, 2 * this_len);
+		  newp = (char *) realloc (buf, bufsize);
+		  if (newp == NULL)
+		    {
+		      /* No more memory.  */
+		      int save_err = errno;
+		      free (buf);
+		      __set_errno (save_err);
+		      return -1;
+		    }
+		  buf = newp;
+		}
+
+	      *((char *) __mempcpy (buf + actsize, d->d_name, this_len))
+		= '\0';
+	      actsize += this_len + 1;
+	    }
+
+	  /* Terminate the list with an additional NUL byte.  */
+	  buf[actsize++] = '\0';
+
+	  /* Shrink the buffer to what we actually need.  */
+	  data->dirstreams[data->actdir]->content = realloc (buf, actsize);
+	  if (data->dirstreams[data->actdir]->content == NULL)
+	    {
+	      int save_err = errno;
+	      free (buf);
+	      __set_errno (save_err);
+	      result = -1;
+	    }
+	  else
+	    {
+	      __closedir (st);
+	      data->dirstreams[data->actdir]->stream = NULL;
+	      data->dirstreams[data->actdir]->streamfd = -1;
+	      data->dirstreams[data->actdir] = NULL;
+	    }
+	}
+    }
+
+  /* Open the new stream.  */
+  if (result == 0)
+    {
+      assert (data->dirstreams[data->actdir] == NULL);
+
+      if (dfdp != NULL && *dfdp != -1)
+	{
+	  int fd = openat64_not_cancel_3 (*dfdp, data->dirbuf + data->ftw.base,
+					  O_RDONLY | O_DIRECTORY | O_NDELAY);
+	  dirp->stream = NULL;
+	  if (fd != -1 && (dirp->stream = __fdopendir (fd)) == NULL)
+	    close_not_cancel_no_status (fd);
+	}
+      else
+	{
+	  const char *name;
+
+	  if (data->flags & FTW_CHDIR)
+	    {
+	      name = data->dirbuf + data->ftw.base;
+	      if (name[0] == '\0')
+		name = ".";
+	    }
+	  else
+	    name = data->dirbuf;
+
+	  dirp->stream = __opendir (name);
+	}
+
+      if (dirp->stream == NULL)
+	result = -1;
+      else
+	{
+	  dirp->streamfd = dirfd (dirp->stream);
+	  dirp->content = NULL;
+	  data->dirstreams[data->actdir] = dirp;
+
+	  if (++data->actdir == data->maxdir)
+	    data->actdir = 0;
+	}
+    }
+
+  return result;
+}
+
+
+static int
+internal_function
+process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
+	       size_t namlen, int d_type)
+{
+  struct STAT st;
+  int result = 0;
+  int flag = 0;
+  size_t new_buflen;
+
+  if (name[0] == '.' && (name[1] == '\0'
+			 || (name[1] == '.' && name[2] == '\0')))
+    /* Don't process the "." and ".." entries.  */
+    return 0;
+
+  new_buflen = data->ftw.base + namlen + 2;
+  if (data->dirbufsize < new_buflen)
+    {
+      /* Enlarge the buffer.  */
+      char *newp;
+
+      data->dirbufsize = 2 * new_buflen;
+      newp = (char *) realloc (data->dirbuf, data->dirbufsize);
+      if (newp == NULL)
+	return -1;
+      data->dirbuf = newp;
+    }
+
+  *((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
+
+  int statres;
+  if (dir->streamfd != -1)
+    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
+			(data->flags & FTW_PHYS) ? AT_SYMLINK_NOFOLLOW : 0);
+  else
+    {
+      if ((data->flags & FTW_CHDIR) == 0)
+	name = data->dirbuf;
+
+      statres = ((data->flags & FTW_PHYS)
+		 ? LXSTAT (_STAT_VER, name, &st)
+		 : XSTAT (_STAT_VER, name, &st));
+    }
+
+  if (statres < 0)
+    {
+      if (errno != EACCES && errno != ENOENT)
+	result = -1;
+      else if (data->flags & FTW_PHYS)
+	flag = FTW_NS;
+      else if (d_type == DT_LNK)
+	flag = FTW_SLN;
+      else
+	{
+	  if (dir->streamfd != -1)
+	    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
+				AT_SYMLINK_NOFOLLOW);
+	  else
+	    statres = LXSTAT (_STAT_VER, name, &st);
+	  if (statres == 0 && S_ISLNK (st.st_mode))
+	    flag = FTW_SLN;
+	  else
+	    flag = FTW_NS;
+	}
+    }
+  else
+    {
+      if (S_ISDIR (st.st_mode))
+	flag = FTW_D;
+      else if (S_ISLNK (st.st_mode))
+	flag = FTW_SL;
+      else
+	flag = FTW_F;
+    }
+
+  if (result == 0
+      && (flag == FTW_NS
+	  || !(data->flags & FTW_MOUNT) || st.st_dev == data->dev))
+    {
+      if (flag == FTW_D)
+	{
+	  if ((data->flags & FTW_PHYS)
+	      || (!find_object (data, &st)
+		  /* Remember the object.  */
+		  && (result = add_object (data, &st)) == 0))
+	    result = ftw_dir (data, &st, dir);
+	}
+      else
+	result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],
+				&data->ftw);
+    }
+
+  if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SUBTREE)
+    result = 0;
+
+  return result;
+}
+
+
+static int
+__attribute ((noinline))
+internal_function
+ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
+{
+  struct dir_data dir;
+  struct dirent64 *d;
+  int previous_base = data->ftw.base;
+  int result;
+  char *startp;
+
+  /* Open the stream for this directory.  This might require that
+     another stream has to be closed.  */
+  result = open_dir_stream (old_dir == NULL ? NULL : &old_dir->streamfd,
+			    data, &dir);
+  if (result != 0)
+    {
+      if (errno == EACCES)
+	/* We cannot read the directory.  Signal this with a special flag.  */
+	result = (*data->func) (data->dirbuf, st, FTW_DNR, &data->ftw);
+
+      return result;
+    }
+
+  /* First, report the directory (if not depth-first).  */
+  if (!(data->flags & FTW_DEPTH))
+    {
+      result = (*data->func) (data->dirbuf, st, FTW_D, &data->ftw);
+      if (result != 0)
+	{
+	  int save_err;
+fail:
+	  save_err = errno;
+	  __closedir (dir.stream);
+	  dir.streamfd = -1;
+	  __set_errno (save_err);
+
+	  if (data->actdir-- == 0)
+	    data->actdir = data->maxdir - 1;
+	  data->dirstreams[data->actdir] = NULL;
+	  return result;
+	}
+    }
+
+  /* If necessary, change to this directory.  */
+  if (data->flags & FTW_CHDIR)
+    {
+      if (__fchdir (dirfd (dir.stream)) < 0)
+	{
+	  result = -1;
+	  goto fail;
+	}
+    }
+
+  /* Next, update the `struct FTW' information.  */
+  ++data->ftw.level;
+  startp = __rawmemchr (data->dirbuf, '\0');
+  /* There always must be a directory name.  */
+  assert (startp != data->dirbuf);
+  if (startp[-1] != '/')
+    *startp++ = '/';
+  data->ftw.base = startp - data->dirbuf;
+
+  while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
+    {
+      int d_type = DT_UNKNOWN;
+#ifdef _DIRENT_HAVE_D_TYPE
+      d_type = d->d_type;
+#endif
+      result = process_entry (data, &dir, d->d_name, NAMLEN (d), d_type);
+      if (result != 0)
+	break;
+    }
+
+  if (dir.stream != NULL)
+    {
+      /* The stream is still open.  I.e., we did not need more
+	 descriptors.  Simply close the stream now.  */
+      int save_err = errno;
+
+      assert (dir.content == NULL);
+
+      __closedir (dir.stream);
+      dir.streamfd = -1;
+      __set_errno (save_err);
+
+      if (data->actdir-- == 0)
+	data->actdir = data->maxdir - 1;
+      data->dirstreams[data->actdir] = NULL;
+    }
+  else
+    {
+      int save_err;
+      char *runp = dir.content;
+
+      while (result == 0 && *runp != '\0')
+	{
+	  char *endp = strchr (runp, '\0');
+
+	  // XXX Should store the d_type values as well?!
+	  result = process_entry (data, &dir, runp, endp - runp, DT_UNKNOWN);
+
+	  runp = endp + 1;
+	}
+
+      save_err = errno;
+      free (dir.content);
+      __set_errno (save_err);
+    }
+
+  if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SIBLINGS)
+    result = 0;
+
+  /* Prepare the return, revert the `struct FTW' information.  */
+  data->dirbuf[data->ftw.base - 1] = '\0';
+  --data->ftw.level;
+  data->ftw.base = previous_base;
+
+  /* Finally, if we process depth-first report the directory.  */
+  if (result == 0 && (data->flags & FTW_DEPTH))
+    result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);
+
+  if (old_dir
+      && (data->flags & FTW_CHDIR)
+      && (result == 0
+	  || ((data->flags & FTW_ACTIONRETVAL)
+	      && (result != -1 && result != FTW_STOP))))
+    {
+      /* Change back to the parent directory.  */
+      int done = 0;
+      if (old_dir->stream != NULL)
+	if (__fchdir (dirfd (old_dir->stream)) == 0)
+	  done = 1;
+
+      if (!done)
+	{
+	  if (data->ftw.base == 1)
+	    {
+	      if (__chdir ("/") < 0)
+		result = -1;
+	    }
+	  else
+	    if (__chdir ("..") < 0)
+	      result = -1;
+	}
+    }
+
+  return result;
+}
+
+
+static int
+__attribute ((noinline))
+internal_function
+ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
+	     int flags)
+{
+  struct ftw_data data;
+  struct STAT st;
+  int result = 0;
+  int save_err;
+  int cwdfd = -1;
+  char *cwd = NULL;
+  char *cp;
+
+  /* First make sure the parameters are reasonable.  */
+  if (dir[0] == '\0')
+    {
+      __set_errno (ENOENT);
+      return -1;
+    }
+
+  data.maxdir = descriptors < 1 ? 1 : descriptors;
+  data.actdir = 0;
+  data.dirstreams = (struct dir_data **) alloca (data.maxdir
+						 * sizeof (struct dir_data *));
+  memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
+
+  /* PATH_MAX is always defined when we get here.  */
+  data.dirbufsize = MAX (2 * strlen (dir), PATH_MAX);
+  data.dirbuf = (char *) malloc (data.dirbufsize);
+  if (data.dirbuf == NULL)
+    return -1;
+  cp = __stpcpy (data.dirbuf, dir);
+  /* Strip trailing slashes.  */
+  while (cp > data.dirbuf + 1 && cp[-1] == '/')
+    --cp;
+  *cp = '\0';
+
+  data.ftw.level = 0;
+
+  /* Find basename.  */
+  while (cp > data.dirbuf && cp[-1] != '/')
+    --cp;
+  data.ftw.base = cp - data.dirbuf;
+
+  data.flags = flags;
+
+  /* This assignment might seem to be strange but it is what we want.
+     The trick is that the first three arguments to the `ftw' and
+     `nftw' callback functions are equal.  Therefore we can call in
+     every case the callback using the format of the `nftw' version
+     and get the correct result since the stack layout for a function
+     call in C allows this.  */
+  data.func = (NFTW_FUNC_T) func;
+
+  /* Since we internally use the complete set of FTW_* values we need
+     to reduce the value range before calling a `ftw' callback.  */
+  data.cvt_arr = is_nftw ? nftw_arr : ftw_arr;
+
+  /* No object known so far.  */
+  data.known_objects = NULL;
+
+  /* Now go to the directory containing the initial file/directory.  */
+  if (flags & FTW_CHDIR)
+    {
+      /* We have to be able to go back to the current working
+	 directory.  The best way to do this is to use a file
+	 descriptor.  */
+      cwdfd = __open (".", O_RDONLY | O_DIRECTORY);
+      if (cwdfd == -1)
+	{
+	  /* Try getting the directory name.  This can be needed if
+	     the current directory is executable but not readable.  */
+	  if (errno == EACCES)
+	    /* GNU extension ahead.  */
+	    cwd =  __getcwd (NULL, 0);
+
+	  if (cwd == NULL)
+	    goto out_fail;
+	}
+      else if (data.maxdir > 1)
+	/* Account for the file descriptor we use here.  */
+	--data.maxdir;
+
+      if (data.ftw.base > 0)
+	{
+	  /* Change to the directory the file is in.  In data.dirbuf
+	     we have a writable copy of the file name.  Just NUL
+	     terminate it for now and change the directory.  */
+	  if (data.ftw.base == 1)
+	    /* I.e., the file is in the root directory.  */
+	    result = __chdir ("/");
+	  else
+	    {
+	      char ch = data.dirbuf[data.ftw.base - 1];
+	      data.dirbuf[data.ftw.base - 1] = '\0';
+	      result = __chdir (data.dirbuf);
+	      data.dirbuf[data.ftw.base - 1] = ch;
+	    }
+	}
+    }
+
+  /* Get stat info for start directory.  */
+  if (result == 0)
+    {
+      const char *name;
+
+      if (data.flags & FTW_CHDIR)
+	{
+	  name = data.dirbuf + data.ftw.base;
+	  if (name[0] == '\0')
+	    name = ".";
+	}
+      else
+	name = data.dirbuf;
+
+      if (((flags & FTW_PHYS)
+	   ? LXSTAT (_STAT_VER, name, &st)
+	   : XSTAT (_STAT_VER, name, &st)) < 0)
+	{
+	  if (!(flags & FTW_PHYS)
+	      && errno == ENOENT
+	      && LXSTAT (_STAT_VER, name, &st) == 0
+	      && S_ISLNK (st.st_mode))
+	    result = (*data.func) (data.dirbuf, &st, data.cvt_arr[FTW_SLN],
+				   &data.ftw);
+	  else
+	    /* No need to call the callback since we cannot say anything
+	       about the object.  */
+	    result = -1;
+	}
+      else
+	{
+	  if (S_ISDIR (st.st_mode))
+	    {
+	      /* Remember the device of the initial directory in case
+		 FTW_MOUNT is given.  */
+	      data.dev = st.st_dev;
+
+	      /* We know this directory now.  */
+	      if (!(flags & FTW_PHYS))
+		result = add_object (&data, &st);
+
+	      if (result == 0)
+		result = ftw_dir (&data, &st, NULL);
+	    }
+	  else
+	    {
+	      int flag = S_ISLNK (st.st_mode) ? FTW_SL : FTW_F;
+
+	      result = (*data.func) (data.dirbuf, &st, data.cvt_arr[flag],
+				     &data.ftw);
+	    }
+	}
+
+      if ((flags & FTW_ACTIONRETVAL)
+	  && (result == FTW_SKIP_SUBTREE || result == FTW_SKIP_SIBLINGS))
+	result = 0;
+    }
+
+  /* Return to the start directory (if necessary).  */
+  if (cwdfd != -1)
+    {
+      int save_err = errno;
+      __fchdir (cwdfd);
+      close_not_cancel_no_status (cwdfd);
+      __set_errno (save_err);
+    }
+  else if (cwd != NULL)
+    {
+      int save_err = errno;
+      __chdir (cwd);
+      free (cwd);
+      __set_errno (save_err);
+    }
+
+  /* Free all memory.  */
+ out_fail:
+  save_err = errno;
+  __tdestroy (data.known_objects, free);
+  free (data.dirbuf);
+  __set_errno (save_err);
+
+  return result;
+}
+
+
+
+/* Entry points.  */
+
+int
+FTW_NAME (const char *path, FTW_FUNC_T func, int descriptors)
+{
+  return ftw_startup (path, 0, func, descriptors, 0);
+}
+
+#ifndef _LIBC
+int
+NFTW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
+{
+  return ftw_startup (path, 1, func, descriptors, flags);
+}
+#else
+
+# include <shlib-compat.h>
+
+int NFTW_NEW_NAME (const char *, NFTW_FUNC_T, int, int);
+
+int
+NFTW_NEW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
+{
+  if (flags
+      & ~(FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH | FTW_ACTIONRETVAL))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+  return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);
+
+# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
+
+/* Older nftw* version just ignored all unknown flags.  */
+
+int NFTW_OLD_NAME (const char *, NFTW_FUNC_T, int, int);
+
+int
+attribute_compat_text_section
+NFTW_OLD_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
+{
+  flags &= (FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH);
+  return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
+# endif
+#endif
diff --git a/REORG.TODO/io/ftw.h b/REORG.TODO/io/ftw.h
new file mode 100644
index 0000000000..842931b8ff
--- /dev/null
+++ b/REORG.TODO/io/ftw.h
@@ -0,0 +1,177 @@
+/* Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	X/Open Portability Guide 4.2: ftw.h
+ */
+
+#ifndef _FTW_H
+#define	_FTW_H	1
+
+#include <features.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+__BEGIN_DECLS
+
+/* Values for the FLAG argument to the user function passed to `ftw'
+   and 'nftw'.  */
+enum
+{
+  FTW_F,		/* Regular file.  */
+#define FTW_F	 FTW_F
+  FTW_D,		/* Directory.  */
+#define FTW_D	 FTW_D
+  FTW_DNR,		/* Unreadable directory.  */
+#define FTW_DNR	 FTW_DNR
+  FTW_NS,		/* Unstatable file.  */
+#define FTW_NS	 FTW_NS
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+
+  FTW_SL,		/* Symbolic link.  */
+# define FTW_SL	 FTW_SL
+#endif
+
+#ifdef __USE_XOPEN_EXTENDED
+/* These flags are only passed from the `nftw' function.  */
+  FTW_DP,		/* Directory, all subdirs have been visited. */
+# define FTW_DP	 FTW_DP
+  FTW_SLN		/* Symbolic link naming non-existing file.  */
+# define FTW_SLN FTW_SLN
+
+#endif	/* extended X/Open */
+};
+
+
+#ifdef __USE_XOPEN_EXTENDED
+/* Flags for fourth argument of `nftw'.  */
+enum
+{
+  FTW_PHYS = 1,		/* Perform physical walk, ignore symlinks.  */
+# define FTW_PHYS	FTW_PHYS
+  FTW_MOUNT = 2,	/* Report only files on same file system as the
+			   argument.  */
+# define FTW_MOUNT	FTW_MOUNT
+  FTW_CHDIR = 4,	/* Change to current directory while processing it.  */
+# define FTW_CHDIR	FTW_CHDIR
+  FTW_DEPTH = 8		/* Report files in directory before directory itself.*/
+# define FTW_DEPTH	FTW_DEPTH
+# ifdef __USE_GNU
+  ,
+  FTW_ACTIONRETVAL = 16	/* Assume callback to return FTW_* values instead of
+			   zero to continue and non-zero to terminate.  */
+#  define FTW_ACTIONRETVAL FTW_ACTIONRETVAL
+# endif
+};
+
+#ifdef __USE_GNU
+/* Return values from callback functions.  */
+enum
+{
+  FTW_CONTINUE = 0,	/* Continue with next sibling or for FTW_D with the
+			   first child.  */
+# define FTW_CONTINUE	FTW_CONTINUE
+  FTW_STOP = 1,		/* Return from `ftw' or `nftw' with FTW_STOP as return
+			   value.  */
+# define FTW_STOP	FTW_STOP
+  FTW_SKIP_SUBTREE = 2,	/* Only meaningful for FTW_D: Don't walk through the
+			   subtree, instead just continue with its next
+			   sibling. */
+# define FTW_SKIP_SUBTREE FTW_SKIP_SUBTREE
+  FTW_SKIP_SIBLINGS = 3,/* Continue with FTW_DP callback for current directory
+			    (if FTW_DEPTH) and then its siblings.  */
+# define FTW_SKIP_SIBLINGS FTW_SKIP_SIBLINGS
+};
+#endif
+
+/* Structure used for fourth argument to callback function for `nftw'.  */
+struct FTW
+  {
+    int base;
+    int level;
+  };
+#endif	/* extended X/Open */
+
+
+/* Convenient types for callback functions.  */
+typedef int (*__ftw_func_t) (const char *__filename,
+			     const struct stat *__status, int __flag);
+#ifdef __USE_LARGEFILE64
+typedef int (*__ftw64_func_t) (const char *__filename,
+			       const struct stat64 *__status, int __flag);
+#endif
+#ifdef __USE_XOPEN_EXTENDED
+typedef int (*__nftw_func_t) (const char *__filename,
+			      const struct stat *__status, int __flag,
+			      struct FTW *__info);
+# ifdef __USE_LARGEFILE64
+typedef int (*__nftw64_func_t) (const char *__filename,
+				const struct stat64 *__status,
+				int __flag, struct FTW *__info);
+# endif
+#endif
+
+/* Call a function on every element in a directory tree.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+#ifndef __USE_FILE_OFFSET64
+extern int ftw (const char *__dir, __ftw_func_t __func, int __descriptors)
+     __nonnull ((1, 2));
+#else
+# ifdef __REDIRECT
+extern int __REDIRECT (ftw, (const char *__dir, __ftw_func_t __func,
+			     int __descriptors), ftw64) __nonnull ((1, 2));
+# else
+#  define ftw ftw64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int ftw64 (const char *__dir, __ftw64_func_t __func,
+		  int __descriptors) __nonnull ((1, 2));
+#endif
+
+#ifdef __USE_XOPEN_EXTENDED
+/* Call a function on every element in a directory tree.  FLAG allows
+   to specify the behaviour more detailed.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int nftw (const char *__dir, __nftw_func_t __func, int __descriptors,
+		 int __flag) __nonnull ((1, 2));
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (nftw, (const char *__dir, __nftw_func_t __func,
+			      int __descriptors, int __flag), nftw64)
+     __nonnull ((1, 2));
+#  else
+#   define nftw nftw64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int nftw64 (const char *__dir, __nftw64_func_t __func,
+		   int __descriptors, int __flag) __nonnull ((1, 2));
+# endif
+#endif
+
+__END_DECLS
+
+#endif	/* ftw.h */
diff --git a/REORG.TODO/io/ftw64.c b/REORG.TODO/io/ftw64.c
new file mode 100644
index 0000000000..4df9bd822a
--- /dev/null
+++ b/REORG.TODO/io/ftw64.c
@@ -0,0 +1,32 @@
+/* File tree walker functions.  LFS version.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FTW_NAME ftw64
+#define NFTW_NAME nftw64
+#define NFTW_OLD_NAME __old_nftw64
+#define NFTW_NEW_NAME __new_nftw64
+#define INO_T ino64_t
+#define STAT stat64
+#define LXSTAT __lxstat64
+#define XSTAT __xstat64
+#define FXSTATAT __fxstatat64
+#define FTW_FUNC_T __ftw64_func_t
+#define NFTW_FUNC_T __nftw64_func_t
+
+#include "ftw.c"
diff --git a/REORG.TODO/io/ftwtest-sh b/REORG.TODO/io/ftwtest-sh
new file mode 100644
index 0000000000..ac9cf1c6f4
--- /dev/null
+++ b/REORG.TODO/io/ftwtest-sh
@@ -0,0 +1,301 @@
+#!/bin/sh
+# Test for nftw(3).
+# Copyright (C) 1997-2017 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+set -e
+
+# The common objpfx, used to find libraries and the dynamic loader.
+objpfx=$1
+
+# We expect one parameter which is the test program.  This must understand
+# a number options:
+#   --phys		use the FTW_PHYS flag
+#   --chdir		use the FTW_CHDIR and print the current directory
+#			in the callback
+#   --depth		use the FTW_DEPTH flag
+#   --early-exit 	print file@2 item only and return non-zero from the
+#			callback when it is seen
+testprogram=$2
+
+# We cannot test this as root.
+if test `id | sed "s/uid=\([0-9]*\).*/\1/"` = 0; then
+  exit 0
+fi
+
+# Since we use `sort' we must make sure to use the same locale everywhere.
+LC_ALL=C
+export LC_ALL
+
+# First create our scenario:
+tmp=${objpfx}io
+tmpdir=$tmp/ftwtest.d
+
+trap 'chmod -fR a+x $tmpdir; rm -fr $tmpdir $testout' 0 1 2 3 15
+
+if test -d $tmpdir; then
+  chmod -fR a+x $tmpdir
+  rm -fr $tmpdir
+fi
+mkdir $tmpdir
+mkdir $tmpdir/foo
+mkdir $tmpdir/bar
+echo > $tmpdir/baz
+mkdir $tmpdir/foo/lvl1
+echo > $tmpdir/foo/lvl1/file@1
+mkdir $tmpdir/foo/lvl1/lvl2
+echo > $tmpdir/foo/lvl1/lvl2/file@2
+mkdir $tmpdir/foo/lvl1/lvl2/lvl3
+echo > $tmpdir/foo/lvl1/lvl2/lvl3/file@3
+ln -s $tmpdir $tmpdir/foo/lvl1/lvl2/lvl3/link@3
+ln -s $tmpdir/foo/lvl1/lvl2 $tmpdir/foo/lvl1/lvl2/link@2
+ln -s $tmpdir/foo/lvl1/lvl2/lvl3/lvl4 $tmpdir/foo/lvl1/link@1
+echo > $tmpdir/bar/xo
+chmod a-x,a+r $tmpdir/bar
+
+testout=$tmp/ftwtest-tmp.out
+
+$testprogram $tmpdir |
+    sort > $testout
+
+cat <<EOF | cmp $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5
+EOF
+rm $testout
+
+$testprogram --depth $tmpdir |
+    sort > $testout
+
+cat <<EOF | cmp $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_DP, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_DP, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_DP, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_DP, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_DP, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_DP, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5
+EOF
+rm $testout
+
+$testprogram --phys $tmpdir |
+    sort > $testout
+
+cat <<EOF | cmp $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SL, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "link@2", flag = FTW_SL, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "link@3", flag = FTW_SL, level = 5
+EOF
+rm $testout
+
+# For the next test everything must be readable.
+chmod -fR a+x $tmpdir
+
+$testprogram --chdir $tmpdir |
+    sort > $testout
+
+# perhaps $tmp involves some symlinks...
+tmpreal=`cd $tmp; pwd -P 2>/dev/null`
+
+cat <<EOF | cmp $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, cwd = $tmpreal, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, cwd = $tmpreal/ftwtest.d, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_F, cwd = $tmpreal/ftwtest.d/bar, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2/lvl3, level = 5
+EOF
+rm $testout
+
+curwd=`pwd -P 2>/dev/null`
+cd "$tmp"
+$testprogram --chdir ftwtest.d |
+    sort > $testout
+cd "$curwd"
+
+cat <<EOF | diff -u $testout - || exit 1
+base = "", file = "ftwtest.d", flag = FTW_D, cwd = $tmpreal, level = 0
+base = "ftwtest.d/", file = "bar", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/", file = "baz", flag = FTW_F, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/", file = "foo", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/bar/", file = "xo", flag = FTW_F, cwd = $tmpreal/ftwtest.d/bar, level = 2
+base = "ftwtest.d/foo/", file = "lvl1", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo, level = 2
+base = "ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2/lvl3, level = 5
+EOF
+rm $testout
+
+curwd=`pwd -P`
+cd "$tmp"
+$testprogram --chdir ftwtest.d/. |
+    sort > $testout
+cd "$curwd"
+
+cat <<EOF | diff -u $testout - || exit 1
+base = "ftwtest.d/", file = ".", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 0
+base = "ftwtest.d/./", file = "bar", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/./", file = "baz", flag = FTW_F, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/./", file = "foo", flag = FTW_D, cwd = $tmpreal/ftwtest.d, level = 1
+base = "ftwtest.d/./bar/", file = "xo", flag = FTW_F, cwd = $tmpreal/ftwtest.d/bar, level = 2
+base = "ftwtest.d/./foo/", file = "lvl1", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo, level = 2
+base = "ftwtest.d/./foo/lvl1/", file = "file@1", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/./foo/lvl1/", file = "link@1", flag = FTW_SLN, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/./foo/lvl1/", file = "lvl2", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 3
+base = "ftwtest.d/./foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "ftwtest.d/./foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2, level = 4
+base = "ftwtest.d/./foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, cwd = $tmpreal/ftwtest.d/foo/lvl1/lvl2/lvl3, level = 5
+EOF
+rm $testout
+
+curwd=`pwd -P 2>/dev/null`
+cd "$tmp"
+$testprogram --chdir ftwtest.d/foo/lvl1/link@1 |
+    sort > $testout
+cd "$curwd"
+
+cat <<EOF | diff -u $testout - || exit 1
+base = "ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, cwd = $tmpreal/ftwtest.d/foo/lvl1, level = 0
+EOF
+rm $testout
+
+$testprogram --early-exit $tmpdir |
+    sort > $testout
+
+cat <<EOF | cmp $testout - || exit 1
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4
+succeeded
+EOF
+rm $testout
+
+mkdir $tmpdir/foo/lvl1b
+echo > $tmpdir/foo/lvl1b/file@1b
+echo > $tmpdir/foo/lvl1b/file2@1b
+echo > $tmpdir/foo/lvl1b/file3@1b
+
+$testprogram --skip-subtree=lvl1 $tmpdir |
+    sort > $testout
+
+cat <<EOF | diff -u $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_F, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1b", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file2@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file3@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file@1b", flag = FTW_F, level = 3
+EOF
+rm $testout
+
+$testprogram --skip-siblings=lvl1 $tmpdir |
+    sort > $testout
+
+# The filesystem is not required to put lvl1 before lvl1b.
+# If lvl1b comes after lvl1, it shouldn't be printed, while if it
+# comes before, it should.
+catcmd=cat
+[ -n "`ls -U $tmpdir/foo/ | sed -n '/lvl1$/,${/lvl1b$/p;}'`" ] \
+  && catcmd="grep -v lvl1b"
+
+$catcmd <<EOF | diff -u $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_F, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1b", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file2@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file3@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file@1b", flag = FTW_F, level = 3
+EOF
+rm $testout
+
+$testprogram --skip-siblings=file@1b $tmpdir |
+    sort > $testout
+
+# The filesystem is not required to put file2@1b and file3@1b after file@1b.
+# If file[23]@1b come after file@1b, it shouldn't be printed, while if they
+# come before, they should.
+regexp=`echo $(ls -U $tmp/ftwtest.d/foo/lvl1b \
+	       | sed -n '/file@1b$/,${/file[23]@1b$/p;}') | sed 's, ,|,'`
+catcmd=cat
+[ -n "$regexp" ] && catcmd="egrep -v $regexp"
+
+$catcmd <<EOF | diff -u $testout - || exit 1
+base = "$tmp/", file = "ftwtest.d", flag = FTW_D, level = 0
+base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1
+base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1
+base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_F, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/", file = "lvl1b", flag = FTW_D, level = 2
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, level = 4
+base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file2@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file3@1b", flag = FTW_F, level = 3
+base = "$tmp/ftwtest.d/foo/lvl1b/", file = "file@1b", flag = FTW_F, level = 3
+EOF
+rm $testout
+
+rm -fr $tmpdir
+
+trap '' 0
+
+exit 0
diff --git a/REORG.TODO/io/ftwtest.c b/REORG.TODO/io/ftwtest.c
new file mode 100644
index 0000000000..77debd2805
--- /dev/null
+++ b/REORG.TODO/io/ftwtest.c
@@ -0,0 +1,120 @@
+#include <ftw.h>
+#include <getopt.h>
+#include <mcheck.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+int do_depth;
+int do_chdir;
+int do_phys;
+int do_exit;
+char *skip_subtree;
+char *skip_siblings;
+
+struct option options[] =
+{
+  { "depth", no_argument, &do_depth, 1 },
+  { "chdir", no_argument, &do_chdir, 1 },
+  { "phys", no_argument, &do_phys, 1 },
+  { "skip-subtree", required_argument, NULL, 't' },
+  { "skip-siblings", required_argument, NULL, 's' },
+  { "early-exit", no_argument, &do_exit, 1 },
+  { NULL, 0, NULL, 0 }
+};
+
+const char *flag2name[] =
+{
+  [FTW_F] = "FTW_F",
+  [FTW_D] = "FTW_D",
+  [FTW_DNR] = "FTW_DNR",
+  [FTW_NS] = "FTW_NS",
+  [FTW_SL] = "FTW_SL",
+  [FTW_DP] = "FTW_DP",
+  [FTW_SLN] = "FTW_SLN"
+};
+
+
+static int
+cb (const char *name, const struct stat *st, int flag, struct FTW *f)
+{
+  if (do_exit && strcmp (name + f->base, "file@2"))
+    return FTW_CONTINUE;
+
+  printf ("base = \"%.*s\", file = \"%s\", flag = %s",
+	  f->base, name, name + f->base, flag2name[flag]);
+  if (do_chdir)
+    {
+      char *cwd = getcwd (NULL, 0);
+      printf (", cwd = %s", cwd);
+      free (cwd);
+    }
+  printf (", level = %d\n", f->level);
+
+  if (skip_siblings && strcmp (name + f->base, skip_siblings) == 0)
+    return FTW_SKIP_SIBLINGS;
+
+  if (skip_subtree && strcmp (name + f->base, skip_subtree) == 0)
+    return FTW_SKIP_SUBTREE;
+
+  return do_exit ? 26 : FTW_CONTINUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int opt;
+  int r;
+  int flag = 0;
+  mtrace ();
+
+  while ((opt = getopt_long_only (argc, argv, "", options, NULL)) != -1)
+    {
+      if (opt == 't')
+        skip_subtree = optarg;
+      else if (opt == 's')
+        skip_siblings = optarg;
+    }
+
+  if (do_chdir)
+    flag |= FTW_CHDIR;
+  if (do_depth)
+    flag |= FTW_DEPTH;
+  if (do_phys)
+    flag |= FTW_PHYS;
+  if (skip_subtree || skip_siblings)
+    {
+      flag |= FTW_ACTIONRETVAL;
+      if (do_exit)
+	{
+	  printf ("--early-exit cannot be used together with --skip-{siblings,subtree}");
+	  exit (1);
+	}
+    }
+
+  char *cw1 = getcwd (NULL, 0);
+
+  r = nftw (optind < argc ? argv[optind] : ".", cb, do_exit ? 1 : 3, flag);
+  if (r < 0)
+    perror ("nftw");
+
+  char *cw2 = getcwd (NULL, 0);
+
+  if (strcmp (cw1, cw2) != 0)
+    {
+      printf ("current working directory before and after nftw call differ:\n"
+	      "before: %s\n"
+	      "after:  %s\n", cw1, cw2);
+      exit (1);
+    }
+
+  if (do_exit)
+    {
+      puts (r == 26 ? "succeeded" : "failed");
+      return r == 26 ? 0 : 1;
+    }
+  return r;
+}
diff --git a/REORG.TODO/io/futimens.c b/REORG.TODO/io/futimens.c
new file mode 100644
index 0000000000..27fc1ae6ef
--- /dev/null
+++ b/REORG.TODO/io/futimens.c
@@ -0,0 +1,34 @@
+/* Change access and modification times of open file.  Linux version.
+   Copyright (C) 2007-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+#include <sysdep.h>
+
+
+/* Change the access time of the file associated with FD to TSP[0] and
+   the modification time of FILE to TSP[1].  */
+int
+futimens (int fd, const struct timespec tsp[2])
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (futimens)
diff --git a/REORG.TODO/io/fxstat.c b/REORG.TODO/io/fxstat.c
new file mode 100644
index 0000000000..d1b548daf7
--- /dev/null
+++ b/REORG.TODO/io/fxstat.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fxstat (int vers, int fd, struct stat *buf)
+{
+  if (vers != _STAT_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  else if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (fstat)
+hidden_def (__fxstat)
+weak_alias (__fxstat, _fxstat)
diff --git a/REORG.TODO/io/fxstat64.c b/REORG.TODO/io/fxstat64.c
new file mode 100644
index 0000000000..c1878e5744
--- /dev/null
+++ b/REORG.TODO/io/fxstat64.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fxstat64 (int vers, int fd, struct stat64 *buf)
+{
+  if (vers != _STAT_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  else if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+hidden_def (__fxstat64)
+stub_warning (fstat64)
diff --git a/REORG.TODO/io/fxstatat.c b/REORG.TODO/io/fxstatat.c
new file mode 100644
index 0000000000..68a4e34f13
--- /dev/null
+++ b/REORG.TODO/io/fxstatat.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fxstatat (int vers, int fd, const char *filename, struct stat *buf, int flag)
+{
+  if (vers != _STAT_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  if (buf == NULL || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__fxstatat)
+stub_warning (fstatat)
diff --git a/REORG.TODO/io/fxstatat64.c b/REORG.TODO/io/fxstatat64.c
new file mode 100644
index 0000000000..c39ef84bba
--- /dev/null
+++ b/REORG.TODO/io/fxstatat64.c
@@ -0,0 +1,49 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+/* Get information about the file descriptor FD in BUF.  */
+int
+__fxstatat64 (int vers, int fd, const char *filename, struct stat64 *buf,
+	      int flag)
+{
+  if (vers != _STAT_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  if (buf == NULL || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__fxstatat64)
+stub_warning (fstatat64)
diff --git a/REORG.TODO/io/getcwd.c b/REORG.TODO/io/getcwd.c
new file mode 100644
index 0000000000..def80309f2
--- /dev/null
+++ b/REORG.TODO/io/getcwd.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+/* Get the pathname of the current working directory,
+   and put it in SIZE bytes of BUF.  Returns NULL if the
+   directory couldn't be determined or SIZE was too small.
+   If successful, returns BUF.  In GNU, if BUF is NULL,
+   an array is allocated with `malloc'; the array is SIZE
+   bytes long, unless SIZE <= 0, in which case it is as
+   big as necessary.  */
+char *
+__getcwd (char *buf, size_t size)
+{
+  __set_errno (ENOSYS);
+  return NULL;
+}
+weak_alias (__getcwd, getcwd)
+
+stub_warning (__getcwd)
+stub_warning (getcwd)
diff --git a/REORG.TODO/io/getdirname.c b/REORG.TODO/io/getdirname.c
new file mode 100644
index 0000000000..e2e449fd16
--- /dev/null
+++ b/REORG.TODO/io/getdirname.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 1992-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <include/sys/stat.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Return a malloc'd string containing the current directory name.
+   If the environment variable `PWD' is set, and its value is correct,
+   that value is used.  */
+
+char *
+get_current_dir_name (void)
+{
+  char *pwd;
+  struct stat64 dotstat, pwdstat;
+
+  pwd = getenv ("PWD");
+  if (pwd != NULL
+      && stat64 (".", &dotstat) == 0
+      && stat64 (pwd, &pwdstat) == 0
+      && pwdstat.st_dev == dotstat.st_dev
+      && pwdstat.st_ino == dotstat.st_ino)
+    /* The PWD value is correct.  Use it.  */
+    return __strdup (pwd);
+
+  return __getcwd ((char *) NULL, 0);
+}
diff --git a/REORG.TODO/io/getwd.c b/REORG.TODO/io/getwd.c
new file mode 100644
index 0000000000..1aa0e1e5b3
--- /dev/null
+++ b/REORG.TODO/io/getwd.c
@@ -0,0 +1,54 @@
+/* Obsolete function to get current working directory.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+
+char *
+getwd (char *buf)
+{
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+  char tmpbuf[PATH_MAX];
+
+  if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  if (__getcwd (tmpbuf, PATH_MAX) == NULL)
+    {
+      /* We use 1024 here since it should really be enough and because
+	 this is a safe value.  */
+      __strerror_r (errno, buf, 1024);
+      return NULL;
+    }
+
+  /* This is completely unsafe.  Nobody can say how big the user
+     provided buffer is.  Perhaps the application and the libc
+     disagree about the value of PATH_MAX.  */
+  return strcpy (buf, tmpbuf);
+}
+
+link_warning (getwd,
+	      "the `getwd' function is dangerous and should not be used.")
diff --git a/REORG.TODO/io/isatty.c b/REORG.TODO/io/isatty.c
new file mode 100644
index 0000000000..8eeb06352e
--- /dev/null
+++ b/REORG.TODO/io/isatty.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Return 1 if FD is a terminal, 0 if not.  */
+int
+__isatty (int fd)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+weak_alias (__isatty, isatty)
+
+stub_warning (isatty)
diff --git a/REORG.TODO/io/lchmod.c b/REORG.TODO/io/lchmod.c
new file mode 100644
index 0000000000..21c56adcf8
--- /dev/null
+++ b/REORG.TODO/io/lchmod.c
@@ -0,0 +1,31 @@
+/* lchmod -- Change the protections of a file or symbolic link.  Stub version.
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+/* Change the protections of FILE to MODE.  */
+int
+lchmod (const char *file, mode_t mode)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (lchmod)
diff --git a/REORG.TODO/io/lchown.c b/REORG.TODO/io/lchown.c
new file mode 100644
index 0000000000..56890b6ace
--- /dev/null
+++ b/REORG.TODO/io/lchown.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Change the owner and group of FILE.  */
+int
+__lchown (const char *file, uid_t owner, gid_t group)
+{
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (lchown)
+
+weak_alias (__lchown, lchown)
diff --git a/REORG.TODO/io/link.c b/REORG.TODO/io/link.c
new file mode 100644
index 0000000000..68d183009c
--- /dev/null
+++ b/REORG.TODO/io/link.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Make a link to FROM called TO.  */
+int
+__link (const char *from, const char *to)
+{
+  if (from == NULL || to == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (link)
+
+weak_alias (__link, link)
diff --git a/REORG.TODO/io/linkat.c b/REORG.TODO/io/linkat.c
new file mode 100644
index 0000000000..295a2141d4
--- /dev/null
+++ b/REORG.TODO/io/linkat.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Make a link to FROM relative to FROMFD called TO relative to TOFD.  */
+int
+linkat (int fromfd, const char *from, int tofd, const char *to, int flags)
+{
+  if (from == NULL || to == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if ((tofd != AT_FDCWD && tofd < 0 && *to != '/')
+      || (fromfd != AT_FDCWD && fromfd < 0 && *from != '/'))
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (linkat)
diff --git a/REORG.TODO/io/lockf.c b/REORG.TODO/io/lockf.c
new file mode 100644
index 0000000000..4ab7e9357f
--- /dev/null
+++ b/REORG.TODO/io/lockf.c
@@ -0,0 +1,85 @@
+/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* We need to avoid the header declaration of lockf64, because
+   the types don't match lockf and then the compiler will
+   complain about the mismatch when we do the alias below.  */
+#define lockf64	__renamed_lockf64
+
+#include <fcntl.h>
+
+#undef	lockf64
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+/* lockf is a simplified interface to fcntl's locking facilities.  */
+
+int
+lockf (int fd, int cmd, off_t len)
+{
+  struct flock fl;
+
+  memset ((char *) &fl, '\0', sizeof (fl));
+
+  /* lockf is always relative to the current file position.  */
+  fl.l_whence = SEEK_CUR;
+  fl.l_start = 0;
+  fl.l_len = len;
+
+  switch (cmd)
+    {
+    case F_TEST:
+      /* Test the lock: return 0 if FD is unlocked or locked by this process;
+	 return -1, set errno to EACCES, if another process holds the lock.  */
+      fl.l_type = F_RDLCK;
+      if (__fcntl (fd, F_GETLK, &fl) < 0)
+	return -1;
+      if (fl.l_type == F_UNLCK || fl.l_pid == __getpid ())
+	return 0;
+      __set_errno (EACCES);
+      return -1;
+
+    case F_ULOCK:
+      fl.l_type = F_UNLCK;
+      cmd = F_SETLK;
+      break;
+    case F_LOCK:
+      fl.l_type = F_WRLCK;
+      cmd = F_SETLKW;
+      break;
+    case F_TLOCK:
+      fl.l_type = F_WRLCK;
+      cmd = F_SETLK;
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* lockf() is a cancellation point but so is fcntl() if F_SETLKW is
+     used.  Therefore we don't have to care about cancellation here,
+     the fcntl() function will take care of it.  */
+  return __fcntl (fd, cmd, &fl);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+weak_alias (lockf, lockf64)
+#endif
diff --git a/REORG.TODO/io/lockf64.c b/REORG.TODO/io/lockf64.c
new file mode 100644
index 0000000000..504ce562e5
--- /dev/null
+++ b/REORG.TODO/io/lockf64.c
@@ -0,0 +1,83 @@
+/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+/* lockf.c defines lockf64 as an alias if __OFF_T_MATCHES_OFF64_T.  */
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+/* lockf is a simplified interface to fcntl's locking facilities.  */
+
+int
+lockf64 (int fd, int cmd, off64_t len64)
+{
+  struct flock fl;
+  off_t len = (off_t) len64;
+
+  if (len64 != (off64_t) len)
+    {
+      /* We can't represent the length.  */
+      __set_errno (EOVERFLOW);
+      return -1;
+    }
+
+  memset ((char *) &fl, '\0', sizeof (fl));
+
+  /* lockf is always relative to the current file position.  */
+  fl.l_whence = SEEK_CUR;
+  fl.l_start = 0;
+  fl.l_len = len;
+
+  switch (cmd)
+    {
+    case F_TEST:
+      /* Test the lock: return 0 if FD is unlocked or locked by this process;
+	 return -1, set errno to EACCES, if another process holds the lock.  */
+      fl.l_type = F_RDLCK;
+      if (__fcntl (fd, F_GETLK, &fl) < 0)
+	return -1;
+      if (fl.l_type == F_UNLCK || fl.l_pid == __getpid ())
+	return 0;
+      __set_errno (EACCES);
+      return -1;
+
+    case F_ULOCK:
+      fl.l_type = F_UNLCK;
+      cmd = F_SETLK;
+      break;
+    case F_LOCK:
+      fl.l_type = F_WRLCK;
+      cmd = F_SETLKW;
+      break;
+    case F_TLOCK:
+      fl.l_type = F_WRLCK;
+      cmd = F_SETLK;
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __fcntl (fd, cmd, &fl);
+}
+
+#endif
diff --git a/REORG.TODO/io/lseek.c b/REORG.TODO/io/lseek.c
new file mode 100644
index 0000000000..4c562a8e9b
--- /dev/null
+++ b/REORG.TODO/io/lseek.c
@@ -0,0 +1,49 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Seek to OFFSET on FD, starting from WHENCE.  */
+off_t
+__libc_lseek (int fd, off_t offset, int whence)
+{
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  switch (whence)
+    {
+    case SEEK_SET:
+    case SEEK_CUR:
+    case SEEK_END:
+      break;
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__libc_lseek, __lseek)
+weak_alias (__libc_lseek, lseek)
+stub_warning (lseek)
+
+libc_hidden_def (__lseek)
diff --git a/REORG.TODO/io/lseek64.c b/REORG.TODO/io/lseek64.c
new file mode 100644
index 0000000000..b4cf09cf5b
--- /dev/null
+++ b/REORG.TODO/io/lseek64.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Seek to OFFSET on FD, starting from WHENCE.  */
+off64_t
+__libc_lseek64 (int fd, off64_t offset, int whence)
+{
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  switch (whence)
+    {
+    case SEEK_SET:
+    case SEEK_CUR:
+    case SEEK_END:
+      break;
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__libc_lseek64, __lseek64)
+weak_alias (__libc_lseek64, lseek64)
+stub_warning (lseek64)
diff --git a/REORG.TODO/io/lstat.c b/REORG.TODO/io/lstat.c
new file mode 100644
index 0000000000..8ae18d1339
--- /dev/null
+++ b/REORG.TODO/io/lstat.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef lstat
+#undef __lstat
+int
+attribute_hidden
+__lstat (const char *file, struct stat *buf)
+{
+  return __lxstat (_STAT_VER, file, buf);
+}
+
+weak_hidden_alias (__lstat, lstat)
diff --git a/REORG.TODO/io/lstat64.c b/REORG.TODO/io/lstat64.c
new file mode 100644
index 0000000000..c29492aa9f
--- /dev/null
+++ b/REORG.TODO/io/lstat64.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef lstat64
+int
+attribute_hidden
+lstat64 (const char *file, struct stat64 *buf)
+{
+  return __lxstat64 (_STAT_VER, file, buf);
+}
diff --git a/REORG.TODO/io/lxstat.c b/REORG.TODO/io/lxstat.c
new file mode 100644
index 0000000000..e2d93f2055
--- /dev/null
+++ b/REORG.TODO/io/lxstat.c
@@ -0,0 +1,26 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+int
+__lxstat (int version, const char *file, struct stat *buf)
+{
+  return __xstat (version, file, buf);
+}
+hidden_def (__lxstat)
+weak_alias (__lxstat, _lxstat)
diff --git a/REORG.TODO/io/lxstat64.c b/REORG.TODO/io/lxstat64.c
new file mode 100644
index 0000000000..1fd227747c
--- /dev/null
+++ b/REORG.TODO/io/lxstat64.c
@@ -0,0 +1,30 @@
+/* lxstat64 -- get file metadata, not following symlinks.  Stub version.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+/* Get file information about FILE in BUF.
+   If FILE is a symbolic link, do not follow it.  */
+int
+__lxstat64 (int vers, const char *file, struct stat64 *buf)
+{
+  return __xstat64 (vers, file, buf);
+}
+hidden_def (__lxstat64)
diff --git a/REORG.TODO/io/mkdir.c b/REORG.TODO/io/mkdir.c
new file mode 100644
index 0000000000..0b8499a707
--- /dev/null
+++ b/REORG.TODO/io/mkdir.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+
+/* Create a directory named PATH with protections MODE.  */
+int
+__mkdir (const char *path, mode_t mode)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (mkdir)
+
+weak_alias (__mkdir, mkdir)
diff --git a/REORG.TODO/io/mkdirat.c b/REORG.TODO/io/mkdirat.c
new file mode 100644
index 0000000000..1541d625d2
--- /dev/null
+++ b/REORG.TODO/io/mkdirat.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+
+/* Create a directory named PATH relative to FD with protections MODE.  */
+int
+mkdirat (int fd, const char *path, mode_t mode)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && path[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (mkdirat)
diff --git a/REORG.TODO/io/mkfifo.c b/REORG.TODO/io/mkfifo.c
new file mode 100644
index 0000000000..d00183e4d0
--- /dev/null
+++ b/REORG.TODO/io/mkfifo.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+
+/* Create a named pipe (FIFO) named PATH with protections MODE.  */
+int
+mkfifo (const char *path, mode_t mode)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+
+stub_warning (mkfifo)
diff --git a/REORG.TODO/io/mkfifoat.c b/REORG.TODO/io/mkfifoat.c
new file mode 100644
index 0000000000..bcbea75470
--- /dev/null
+++ b/REORG.TODO/io/mkfifoat.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+
+/* Create a named pipe (FIFO) named PATH relative to FD with
+   protections MODE.  */
+int
+mkfifoat (int fd, const char *path, mode_t mode)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && path[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+
+stub_warning (mkfifoat)
diff --git a/REORG.TODO/io/mknod.c b/REORG.TODO/io/mknod.c
new file mode 100644
index 0000000000..4db51d0ada
--- /dev/null
+++ b/REORG.TODO/io/mknod.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1995-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+int
+attribute_hidden
+__mknod (const char *path, mode_t mode, dev_t dev)
+{
+  return __xmknod (_MKNOD_VER, path, mode, &dev);
+}
+
+weak_hidden_alias (__mknod, mknod)
diff --git a/REORG.TODO/io/mknodat.c b/REORG.TODO/io/mknodat.c
new file mode 100644
index 0000000000..1e3a4b1f1d
--- /dev/null
+++ b/REORG.TODO/io/mknodat.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1995-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+int
+attribute_hidden
+mknodat (int fd, const char *path, mode_t mode, dev_t dev)
+{
+  return __xmknodat (_MKNOD_VER, fd, path, mode, &dev);
+}
diff --git a/REORG.TODO/io/open.c b/REORG.TODO/io/open.c
new file mode 100644
index 0000000000..47013f65f4
--- /dev/null
+++ b/REORG.TODO/io/open.c
@@ -0,0 +1,59 @@
+/* Open a file by name.  Stub version.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+
+/* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
+   a third argument is the file protection.  */
+int
+__libc_open (const char *file, int oflag)
+{
+  int mode;
+
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start(arg, oflag);
+      mode = va_arg(arg, int);
+      va_end(arg);
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__libc_open)
+weak_alias (__libc_open, __open)
+libc_hidden_weak (__open)
+weak_alias (__libc_open, open)
+
+stub_warning (open)
+
+/* __open_2 is a generic wrapper that calls __open.
+   So give a stub warning for that symbol too.  */
+stub_warning (__open_2)
diff --git a/REORG.TODO/io/open64.c b/REORG.TODO/io/open64.c
new file mode 100644
index 0000000000..46439a5aac
--- /dev/null
+++ b/REORG.TODO/io/open64.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+/* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
+   a third argument is the file protection.  */
+int
+__libc_open64 (const char *file, int oflag)
+{
+  int mode;
+
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+strong_alias (__libc_open64, __open64)
+libc_hidden_def (__open64)
+weak_alias (__libc_open64, open64)
+
+stub_warning (open64)
+
+/* __open64_2 is a generic wrapper that calls __open64.
+   So give a stub warning for that symbol too.  */
+stub_warning (__open64_2)
diff --git a/REORG.TODO/io/open64_2.c b/REORG.TODO/io/open64_2.c
new file mode 100644
index 0000000000..138817260d
--- /dev/null
+++ b/REORG.TODO/io/open64_2.c
@@ -0,0 +1,29 @@
+/* _FORTIFY_SOURCE wrapper for open64.
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+int
+__open64_2 (const char *file, int oflag)
+{
+  if (__OPEN_NEEDS_MODE (oflag))
+    __fortify_fail ("invalid open64 call: O_CREAT or O_TMPFILE without mode");
+
+  return __open64 (file, oflag);
+}
diff --git a/REORG.TODO/io/open_2.c b/REORG.TODO/io/open_2.c
new file mode 100644
index 0000000000..b42f493ad8
--- /dev/null
+++ b/REORG.TODO/io/open_2.c
@@ -0,0 +1,29 @@
+/* _FORTIFY_SOURCE wrapper for open.
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+int
+__open_2 (const char *file, int oflag)
+{
+  if (__OPEN_NEEDS_MODE (oflag))
+    __fortify_fail ("invalid open call: O_CREAT or O_TMPFILE without mode");
+
+  return __open (file, oflag);
+}
diff --git a/REORG.TODO/io/openat.c b/REORG.TODO/io/openat.c
new file mode 100644
index 0000000000..529f418da2
--- /dev/null
+++ b/REORG.TODO/io/openat.c
@@ -0,0 +1,79 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <kernel-features.h>
+
+/* Some mostly-generic code (e.g. sysdeps/posix/getcwd.c) uses this variable
+   if __ASSUME_ATFCTS is not defined.  */
+#ifndef __ASSUME_ATFCTS
+int __have_atfcts;
+#endif
+
+/* Open FILE with access OFLAG.  Interpret relative paths relative to
+   the directory associated with FD.  If O_CREAT or O_TMPFILE is in OFLAG, a
+   third argument is the file protection.  */
+int
+__openat (int fd, const char *file, int oflag, ...)
+{
+  int mode;
+
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && file[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+
+      ignore_value (mode);
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__openat)
+weak_alias (__openat, openat)
+stub_warning (openat)
+
+/* __openat_2 is a generic wrapper that calls __openat.
+   So give a stub warning for that symbol too.  */
+stub_warning (__openat_2)
diff --git a/REORG.TODO/io/openat64.c b/REORG.TODO/io/openat64.c
new file mode 100644
index 0000000000..116becda98
--- /dev/null
+++ b/REORG.TODO/io/openat64.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+/* Open FILE with access OFLAG.  Interpret relative paths relative to
+   the directory associated with FD.  If O_CREAT or O_TMPFILE is in OFLAG, a
+   third argument is the file protection.  */
+int
+__openat64 (int fd, const char *file, int oflag, ...)
+{
+  int mode;
+
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && file[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+
+      ignore_value (mode);
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__openat64)
+weak_alias (__openat64, openat64)
+stub_warning (openat64)
+
+/* __openat64_2 is a generic wrapper that calls __openat64.
+   So give a stub warning for that symbol too.  */
+stub_warning (__openat_2)
diff --git a/REORG.TODO/io/openat64_2.c b/REORG.TODO/io/openat64_2.c
new file mode 100644
index 0000000000..95ff739041
--- /dev/null
+++ b/REORG.TODO/io/openat64_2.c
@@ -0,0 +1,29 @@
+/* _FORTIFY_SOURCE wrapper for openat64.
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+int
+__openat64_2 (int fd, const char *file, int oflag)
+{
+  if (__OPEN_NEEDS_MODE (oflag))
+    __fortify_fail ("invalid openat64 call: O_CREAT or O_TMPFILE without mode");
+
+  return __openat64 (fd, file, oflag);
+}
diff --git a/REORG.TODO/io/openat_2.c b/REORG.TODO/io/openat_2.c
new file mode 100644
index 0000000000..6911c83411
--- /dev/null
+++ b/REORG.TODO/io/openat_2.c
@@ -0,0 +1,29 @@
+/* _FORTIFY_SOURCE wrapper for openat.
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+int
+__openat_2 (int fd, const char *file, int oflag)
+{
+  if (__OPEN_NEEDS_MODE (oflag))
+    __fortify_fail ("invalid openat call: O_CREAT or O_TMPFILE without mode");
+
+  return __openat (fd, file, oflag);
+}
diff --git a/REORG.TODO/io/pipe.c b/REORG.TODO/io/pipe.c
new file mode 100644
index 0000000000..7e8b478cfe
--- /dev/null
+++ b/REORG.TODO/io/pipe.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+/* Create a one-way communication channel (__pipe).
+   If successful, two file descriptors are stored in PIPEDES;
+   bytes written on PIPEDES[1] can be read from PIPEDES[0].
+   Returns 0 if successful, -1 if not.  */
+int
+__pipe (int __pipedes[2])
+{
+  if (__pipedes == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__pipe)
+stub_warning (pipe)
+
+weak_alias (__pipe, pipe)
diff --git a/REORG.TODO/io/pipe2.c b/REORG.TODO/io/pipe2.c
new file mode 100644
index 0000000000..ec210ee4a3
--- /dev/null
+++ b/REORG.TODO/io/pipe2.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+/* Create a one-way communication channel (__pipe).  If successful,
+   two file descriptors are stored in PIPEDES; bytes written on
+   PIPEDES[1] can be read from PIPEDES[0].  Apply FLAGS to the new
+   file descriptors.  Returns 0 if successful, -1 if not.  */
+int
+__pipe2 (int pipedes[2], int flags)
+{
+  if (pipedes == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__pipe2, pipe2)
+stub_warning (pipe2)
diff --git a/REORG.TODO/io/poll.c b/REORG.TODO/io/poll.c
new file mode 100644
index 0000000000..15ed631c46
--- /dev/null
+++ b/REORG.TODO/io/poll.c
@@ -0,0 +1,37 @@
+/* Poll (or wait) for file descriptor I/O availability.  Stub version.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/poll.h>
+#include <errno.h>
+
+/* Poll the file descriptors described by the NFDS structures starting at
+   FDS.  If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+   an event to occur; if TIMEOUT is -1, block until an event occurs.
+   Returns the number of file descriptors with events, zero if timed out,
+   or -1 for errors.  */
+
+int
+__poll (struct pollfd *fds, nfds_t nfds, int timeout)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__poll)
+weak_alias (__poll, poll)
+
+stub_warning (poll)
diff --git a/REORG.TODO/io/poll.h b/REORG.TODO/io/poll.h
new file mode 100644
index 0000000000..06fb41ab89
--- /dev/null
+++ b/REORG.TODO/io/poll.h
@@ -0,0 +1 @@
+#include <sys/poll.h>
diff --git a/REORG.TODO/io/posix_fadvise.c b/REORG.TODO/io/posix_fadvise.c
new file mode 100644
index 0000000000..bad1ed024f
--- /dev/null
+++ b/REORG.TODO/io/posix_fadvise.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+
+/* Advice the system about the expected behaviour of the application with
+   respect to the file associated with FD.  */
+
+int
+posix_fadvise (int fd, __off_t offset, __off_t len, int advise)
+{
+  return ENOSYS;
+}
+stub_warning (posix_fadvise)
diff --git a/REORG.TODO/io/posix_fadvise64.c b/REORG.TODO/io/posix_fadvise64.c
new file mode 100644
index 0000000000..4dd072b6ec
--- /dev/null
+++ b/REORG.TODO/io/posix_fadvise64.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+
+/* Advice the system about the expected behaviour of the application with
+   respect to the file associated with FD.  */
+
+int
+posix_fadvise64 (int fd, __off64_t offset, __off64_t len, int advise)
+{
+  return ENOSYS;
+}
+stub_warning (posix_fadvise64)
diff --git a/REORG.TODO/io/posix_fallocate.c b/REORG.TODO/io/posix_fallocate.c
new file mode 100644
index 0000000000..b35e3e9611
--- /dev/null
+++ b/REORG.TODO/io/posix_fallocate.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+
+/* Reserve storage for the data of the file associated with FD.  */
+
+int
+posix_fallocate (int fd, __off_t offset, __off_t len)
+{
+  return ENOSYS;
+}
+stub_warning (posix_fallocate)
diff --git a/REORG.TODO/io/posix_fallocate64.c b/REORG.TODO/io/posix_fallocate64.c
new file mode 100644
index 0000000000..eb9d95cc53
--- /dev/null
+++ b/REORG.TODO/io/posix_fallocate64.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+
+/* Reserve storage for the data of the file associated with FD.  */
+
+int
+posix_fallocate64 (int fd, __off64_t offset, __off64_t len)
+{
+  return ENOSYS;
+}
+stub_warning (posix_fallocate64)
diff --git a/REORG.TODO/io/ppoll.c b/REORG.TODO/io/ppoll.c
new file mode 100644
index 0000000000..e2919a7098
--- /dev/null
+++ b/REORG.TODO/io/ppoll.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 2006-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <limits.h>
+#include <signal.h>
+#include <stddef.h>	/* For NULL.  */
+#include <sys/poll.h>
+#include <sysdep-cancel.h>
+
+
+int
+ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
+       const sigset_t *sigmask)
+{
+  int tval = -1;
+
+  /* poll uses a simple millisecond value.  Convert it.  */
+  if (timeout != NULL)
+    {
+      if (timeout->tv_sec < 0
+	  || timeout->tv_nsec < 0 || timeout->tv_nsec >= 1000000000)
+	{
+	  __set_errno (EINVAL);
+	  return -1;
+	}
+
+      if (timeout->tv_sec > INT_MAX / 1000
+	  || (timeout->tv_sec == INT_MAX / 1000
+	      && ((timeout->tv_nsec + 999999) / 1000000 > INT_MAX % 1000)))
+	/* We cannot represent the timeout in an int value.  Wait
+	   forever.  */
+	tval = -1;
+      else
+	tval = (timeout->tv_sec * 1000
+		+ (timeout->tv_nsec + 999999) / 1000000);
+    }
+
+  /* The setting and restoring of the signal mask and the select call
+     should be an atomic operation.  This can't be done without kernel
+     help.  */
+  sigset_t savemask;
+  if (sigmask != NULL)
+    __sigprocmask (SIG_SETMASK, sigmask, &savemask);
+
+  /* Note the ppoll() is a cancellation point.  But since we call
+     poll() which itself is a cancellation point we do not have
+     to do anything here.  */
+  int retval = __poll (fds, nfds, tval);
+
+  if (sigmask != NULL)
+    __sigprocmask (SIG_SETMASK, &savemask, NULL);
+
+  return retval;
+}
+
+#ifndef ppoll
+/* __poll handles cancellation.  */
+LIBC_CANCEL_HANDLED ();
+libc_hidden_def (ppoll);
+#endif
diff --git a/REORG.TODO/io/pwd.c b/REORG.TODO/io/pwd.c
new file mode 100644
index 0000000000..8883447b3e
--- /dev/null
+++ b/REORG.TODO/io/pwd.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <mcheck.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main (void)
+{
+  char *dir;
+
+  /* Let this program be used for debugging.  */
+  mtrace ();
+
+  dir = getcwd ((char *) NULL, 0);
+
+  if (dir == NULL)
+    perror ("getcwd");
+  else
+    {
+      puts (dir);
+      free (dir);
+    }
+
+  return (dir == NULL ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/REORG.TODO/io/read.c b/REORG.TODO/io/read.c
new file mode 100644
index 0000000000..2f7b6743f7
--- /dev/null
+++ b/REORG.TODO/io/read.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+/* Read NBYTES into BUF from FD.  Return the number read or -1.  */
+ssize_t
+__libc_read (int fd, void *buf, size_t nbytes)
+{
+  if (nbytes == 0)
+    return 0;
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__libc_read)
+stub_warning (read)
+
+weak_alias (__libc_read, __read)
+libc_hidden_weak (__read)
+weak_alias (__libc_read, read)
diff --git a/REORG.TODO/io/readlink.c b/REORG.TODO/io/readlink.c
new file mode 100644
index 0000000000..07e35ae807
--- /dev/null
+++ b/REORG.TODO/io/readlink.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Read the contents of the symbolic link PATH into no more than
+   LEN bytes of BUF.  The contents are not null-terminated.
+   Returns the number of characters read, or -1 for errors.  */
+ssize_t
+__readlink (const char *path, char *buf, size_t len)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (readlink)
+
+weak_alias (__readlink, readlink)
diff --git a/REORG.TODO/io/readlinkat.c b/REORG.TODO/io/readlinkat.c
new file mode 100644
index 0000000000..ef40297199
--- /dev/null
+++ b/REORG.TODO/io/readlinkat.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Read the contents of the symbolic link PATH relative to FD into no
+   more than LEN bytes of BUF.  The contents are not null-terminated.
+   Returns the number of characters read, or -1 for errors.  */
+ssize_t
+readlinkat (int fd, const char *path, char *buf, size_t len)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && fd < 0 && *path != '/')
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (readlinkat)
+libc_hidden_def (readlinkat)
diff --git a/REORG.TODO/io/rmdir.c b/REORG.TODO/io/rmdir.c
new file mode 100644
index 0000000000..63ab144b73
--- /dev/null
+++ b/REORG.TODO/io/rmdir.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Remove the directory PATH.  */
+int
+__rmdir (const char *path)
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (rmdir)
+
+weak_alias (__rmdir, rmdir)
diff --git a/REORG.TODO/io/sendfile.c b/REORG.TODO/io/sendfile.c
new file mode 100644
index 0000000000..09c4f5acb7
--- /dev/null
+++ b/REORG.TODO/io/sendfile.c
@@ -0,0 +1,30 @@
+/* sendfile -- copy data directly from one file descriptor to another
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/sendfile.h>
+#include <errno.h>
+
+/* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
+   descriptor OUT_FD.  */
+ssize_t
+sendfile (int out_fd, int in_fd, off_t *offset, size_t count)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (sendfile)
diff --git a/REORG.TODO/io/sendfile64.c b/REORG.TODO/io/sendfile64.c
new file mode 100644
index 0000000000..766ddf9fa6
--- /dev/null
+++ b/REORG.TODO/io/sendfile64.c
@@ -0,0 +1,30 @@
+/* sendfile -- copy data directly from one file descriptor to another
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/sendfile.h>
+#include <errno.h>
+
+/* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
+   descriptor OUT_FD.  */
+ssize_t
+sendfile64 (int out_fd, int in_fd, off64_t *offset, size_t count)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (sendfile64)
diff --git a/REORG.TODO/io/stat.c b/REORG.TODO/io/stat.c
new file mode 100644
index 0000000000..a51278bc64
--- /dev/null
+++ b/REORG.TODO/io/stat.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef stat
+int
+attribute_hidden
+__stat (const char *file, struct stat *buf)
+{
+  return __xstat (_STAT_VER, file, buf);
+}
+
+weak_hidden_alias (__stat, stat)
diff --git a/REORG.TODO/io/stat64.c b/REORG.TODO/io/stat64.c
new file mode 100644
index 0000000000..704cbb34a6
--- /dev/null
+++ b/REORG.TODO/io/stat64.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+
+/* This definition is only used if inlining fails for this function; see
+   the last page of <sys/stat.h>.  The real work is done by the `x'
+   function which is passed a version number argument.  We arrange in the
+   makefile that when not inlined this function is always statically
+   linked; that way a dynamically-linked executable always encodes the
+   version number corresponding to the data structures it uses, so the `x'
+   functions in the shared library can adapt without needing to recompile
+   all callers.  */
+
+#undef stat64
+int
+attribute_hidden
+stat64 (const char *file, struct stat64 *buf)
+{
+  return __xstat64 (_STAT_VER, file, buf);
+}
diff --git a/REORG.TODO/io/statfs.c b/REORG.TODO/io/statfs.c
new file mode 100644
index 0000000000..28f9ad81c5
--- /dev/null
+++ b/REORG.TODO/io/statfs.c
@@ -0,0 +1,33 @@
+/* statfs -- Return information about the filesystem on which FILE resides.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statfs.h>
+#include <stddef.h>
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statfs (const char *file, struct statfs *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__statfs)
+weak_alias (__statfs, statfs)
+
+stub_warning (statfs)
diff --git a/REORG.TODO/io/statfs64.c b/REORG.TODO/io/statfs64.c
new file mode 100644
index 0000000000..b3974b610e
--- /dev/null
+++ b/REORG.TODO/io/statfs64.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statfs.h>
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statfs64 (const char *file, struct statfs64 *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__statfs64, statfs64)
+
+stub_warning (statfs64)
diff --git a/REORG.TODO/io/statvfs.c b/REORG.TODO/io/statvfs.c
new file mode 100644
index 0000000000..8daf80ba6c
--- /dev/null
+++ b/REORG.TODO/io/statvfs.c
@@ -0,0 +1,32 @@
+/* Return information about the filesystem on which FILE resides.
+   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statvfs.h>
+#include <stddef.h>
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statvfs (const char *file, struct statvfs *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__statvfs, statvfs)
+libc_hidden_weak (statvfs)
+stub_warning (statvfs)
diff --git a/REORG.TODO/io/statvfs64.c b/REORG.TODO/io/statvfs64.c
new file mode 100644
index 0000000000..c3f67c918e
--- /dev/null
+++ b/REORG.TODO/io/statvfs64.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/statvfs.h>
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statvfs64 (const char *file, struct statvfs64 *buf)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__statvfs64, statvfs64)
+
+stub_warning (statvfs64)
diff --git a/REORG.TODO/io/symlink.c b/REORG.TODO/io/symlink.c
new file mode 100644
index 0000000000..a8f7001710
--- /dev/null
+++ b/REORG.TODO/io/symlink.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Make a link to FROM called TO.  */
+int
+__symlink (const char *from, const char *to)
+{
+  if (from == NULL || to == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (symlink)
+
+weak_alias (__symlink, symlink)
diff --git a/REORG.TODO/io/symlinkat.c b/REORG.TODO/io/symlinkat.c
new file mode 100644
index 0000000000..83a56f89f2
--- /dev/null
+++ b/REORG.TODO/io/symlinkat.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Make a link to FROM called TO relative to FD.  */
+int
+symlinkat (const char *from, int fd, const char *to)
+{
+  if (from == NULL || to == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && fd < 0 && *to != '/')
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (symlinkat)
diff --git a/REORG.TODO/io/sys/fcntl.h b/REORG.TODO/io/sys/fcntl.h
new file mode 100644
index 0000000000..cd304557e7
--- /dev/null
+++ b/REORG.TODO/io/sys/fcntl.h
@@ -0,0 +1 @@
+#include <fcntl.h>
diff --git a/REORG.TODO/io/sys/poll.h b/REORG.TODO/io/sys/poll.h
new file mode 100644
index 0000000000..e34c2db5a9
--- /dev/null
+++ b/REORG.TODO/io/sys/poll.h
@@ -0,0 +1,76 @@
+/* Compatibility definitions for System V `poll' interface.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_SYS_POLL_H
+#define	_SYS_POLL_H	1
+
+#include <features.h>
+
+/* Get the platform dependent bits of `poll'.  */
+#include <bits/poll.h>
+#ifdef __USE_GNU
+# include <bits/types/__sigset_t.h>
+# include <bits/types/struct_timespec.h>
+#endif
+
+
+/* Type used for the number of file descriptors.  */
+typedef unsigned long int nfds_t;
+
+/* Data structure describing a polling request.  */
+struct pollfd
+  {
+    int fd;			/* File descriptor to poll.  */
+    short int events;		/* Types of events poller cares about.  */
+    short int revents;		/* Types of events that actually occurred.  */
+  };
+
+
+__BEGIN_DECLS
+
+/* Poll the file descriptors described by the NFDS structures starting at
+   FDS.  If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+   an event to occur; if TIMEOUT is -1, block until an event occurs.
+   Returns the number of file descriptors with events, zero if timed out,
+   or -1 for errors.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
+
+#ifdef __USE_GNU
+/* Like poll, but before waiting the threads signal mask is replaced
+   with that specified in the fourth parameter.  For better usability,
+   the timeout value is specified using a TIMESPEC object.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int ppoll (struct pollfd *__fds, nfds_t __nfds,
+		  const struct timespec *__timeout,
+		  const __sigset_t *__ss);
+#endif
+
+__END_DECLS
+
+
+/* Define some inlines helping to catch common problems.  */
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+# include <bits/poll2.h>
+#endif
+
+#endif	/* sys/poll.h */
diff --git a/REORG.TODO/io/sys/sendfile.h b/REORG.TODO/io/sys/sendfile.h
new file mode 100644
index 0000000000..1811227b35
--- /dev/null
+++ b/REORG.TODO/io/sys/sendfile.h
@@ -0,0 +1,51 @@
+/* sendfile -- copy data directly from one file descriptor to another
+   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_SENDFILE_H
+#define _SYS_SENDFILE_H	1
+
+#include <features.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/* Send up to COUNT bytes from file associated with IN_FD starting at
+   *OFFSET to descriptor OUT_FD.  Set *OFFSET to the IN_FD's file position
+   following the read bytes.  If OFFSET is a null pointer, use the normal
+   file position instead.  Return the number of written bytes, or -1 in
+   case of error.  */
+#ifndef __USE_FILE_OFFSET64
+extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,
+			 size_t __count) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern ssize_t __REDIRECT_NTH (sendfile,
+			       (int __out_fd, int __in_fd, __off64_t *__offset,
+				size_t __count), sendfile64);
+# else
+#  define sendfile sendfile64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,
+			   size_t __count) __THROW;
+#endif
+
+__END_DECLS
+
+#endif	/* sys/sendfile.h */
diff --git a/REORG.TODO/io/sys/stat.h b/REORG.TODO/io/sys/stat.h
new file mode 100644
index 0000000000..ac7ef1f572
--- /dev/null
+++ b/REORG.TODO/io/sys/stat.h
@@ -0,0 +1,533 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	POSIX Standard: 5.6 File Characteristics	<sys/stat.h>
+ */
+
+#ifndef	_SYS_STAT_H
+#define	_SYS_STAT_H	1
+
+#include <features.h>
+
+#include <bits/types.h>		/* For __mode_t and __dev_t.  */
+
+#ifdef __USE_XOPEN2K8
+# include <bits/types/struct_timespec.h>
+#endif
+
+#if defined __USE_XOPEN || defined __USE_XOPEN2K
+/* The Single Unix specification says that some more types are
+   available here.  */
+
+# include <bits/types/time_t.h>
+
+# ifndef __dev_t_defined
+typedef __dev_t dev_t;
+#  define __dev_t_defined
+# endif
+
+# ifndef __gid_t_defined
+typedef __gid_t gid_t;
+#  define __gid_t_defined
+# endif
+
+# ifndef __ino_t_defined
+#  ifndef __USE_FILE_OFFSET64
+typedef __ino_t ino_t;
+#  else
+typedef __ino64_t ino_t;
+#  endif
+#  define __ino_t_defined
+# endif
+
+# ifndef __mode_t_defined
+typedef __mode_t mode_t;
+#  define __mode_t_defined
+# endif
+
+# ifndef __nlink_t_defined
+typedef __nlink_t nlink_t;
+#  define __nlink_t_defined
+# endif
+
+# ifndef __off_t_defined
+#  ifndef __USE_FILE_OFFSET64
+typedef __off_t off_t;
+#  else
+typedef __off64_t off_t;
+#  endif
+#  define __off_t_defined
+# endif
+
+# ifndef __uid_t_defined
+typedef __uid_t uid_t;
+#  define __uid_t_defined
+# endif
+#endif	/* X/Open */
+
+#ifdef __USE_UNIX98
+# ifndef __blkcnt_t_defined
+#  ifndef __USE_FILE_OFFSET64
+typedef __blkcnt_t blkcnt_t;
+#  else
+typedef __blkcnt64_t blkcnt_t;
+#  endif
+#  define __blkcnt_t_defined
+# endif
+
+# ifndef __blksize_t_defined
+typedef __blksize_t blksize_t;
+#  define __blksize_t_defined
+# endif
+#endif	/* Unix98 */
+
+__BEGIN_DECLS
+
+#include <bits/stat.h>
+
+#if defined __USE_MISC || defined __USE_XOPEN
+# define S_IFMT		__S_IFMT
+# define S_IFDIR	__S_IFDIR
+# define S_IFCHR	__S_IFCHR
+# define S_IFBLK	__S_IFBLK
+# define S_IFREG	__S_IFREG
+# ifdef __S_IFIFO
+#  define S_IFIFO	__S_IFIFO
+# endif
+# ifdef __S_IFLNK
+#  define S_IFLNK	__S_IFLNK
+# endif
+# if (defined __USE_MISC || defined __USE_XOPEN_EXTENDED) \
+     && defined __S_IFSOCK
+#  define S_IFSOCK	__S_IFSOCK
+# endif
+#endif
+
+/* Test macros for file types.	*/
+
+#define	__S_ISTYPE(mode, mask)	(((mode) & __S_IFMT) == (mask))
+
+#define	S_ISDIR(mode)	 __S_ISTYPE((mode), __S_IFDIR)
+#define	S_ISCHR(mode)	 __S_ISTYPE((mode), __S_IFCHR)
+#define	S_ISBLK(mode)	 __S_ISTYPE((mode), __S_IFBLK)
+#define	S_ISREG(mode)	 __S_ISTYPE((mode), __S_IFREG)
+#ifdef __S_IFIFO
+# define S_ISFIFO(mode)	 __S_ISTYPE((mode), __S_IFIFO)
+#endif
+#ifdef __S_IFLNK
+# define S_ISLNK(mode)	 __S_ISTYPE((mode), __S_IFLNK)
+#endif
+
+#if defined __USE_MISC && !defined __S_IFLNK
+# define S_ISLNK(mode)  0
+#endif
+
+#if (defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K) \
+    && defined __S_IFSOCK
+# define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
+#elif defined __USE_XOPEN2K
+# define S_ISSOCK(mode) 0
+#endif
+
+/* These are from POSIX.1b.  If the objects are not implemented using separate
+   distinct file types, the macros always will evaluate to zero.  Unlike the
+   other S_* macros the following three take a pointer to a `struct stat'
+   object as the argument.  */
+#ifdef	__USE_POSIX199309
+# define S_TYPEISMQ(buf) __S_TYPEISMQ(buf)
+# define S_TYPEISSEM(buf) __S_TYPEISSEM(buf)
+# define S_TYPEISSHM(buf) __S_TYPEISSHM(buf)
+#endif
+
+
+/* Protection bits.  */
+
+#define	S_ISUID __S_ISUID	/* Set user ID on execution.  */
+#define	S_ISGID	__S_ISGID	/* Set group ID on execution.  */
+
+#if defined __USE_MISC || defined __USE_XOPEN
+/* Save swapped text after use (sticky bit).  This is pretty well obsolete.  */
+# define S_ISVTX	__S_ISVTX
+#endif
+
+#define	S_IRUSR	__S_IREAD	/* Read by owner.  */
+#define	S_IWUSR	__S_IWRITE	/* Write by owner.  */
+#define	S_IXUSR	__S_IEXEC	/* Execute by owner.  */
+/* Read, write, and execute by owner.  */
+#define	S_IRWXU	(__S_IREAD|__S_IWRITE|__S_IEXEC)
+
+#ifdef __USE_MISC
+# define S_IREAD	S_IRUSR
+# define S_IWRITE	S_IWUSR
+# define S_IEXEC	S_IXUSR
+#endif
+
+#define	S_IRGRP	(S_IRUSR >> 3)	/* Read by group.  */
+#define	S_IWGRP	(S_IWUSR >> 3)	/* Write by group.  */
+#define	S_IXGRP	(S_IXUSR >> 3)	/* Execute by group.  */
+/* Read, write, and execute by group.  */
+#define	S_IRWXG	(S_IRWXU >> 3)
+
+#define	S_IROTH	(S_IRGRP >> 3)	/* Read by others.  */
+#define	S_IWOTH	(S_IWGRP >> 3)	/* Write by others.  */
+#define	S_IXOTH	(S_IXGRP >> 3)	/* Execute by others.  */
+/* Read, write, and execute by others.  */
+#define	S_IRWXO	(S_IRWXG >> 3)
+
+
+#ifdef	__USE_MISC
+/* Macros for common mode bit masks.  */
+# define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
+# define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */
+# define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/
+
+# define S_BLKSIZE	512	/* Block size for `st_blocks'.  */
+#endif
+
+
+#ifndef __USE_FILE_OFFSET64
+/* Get file attributes for FILE and put them in BUF.  */
+extern int stat (const char *__restrict __file,
+		 struct stat *__restrict __buf) __THROW __nonnull ((1, 2));
+
+/* Get file attributes for the file, device, pipe, or socket
+   that file descriptor FD is open on and put them in BUF.  */
+extern int fstat (int __fd, struct stat *__buf) __THROW __nonnull ((2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (stat, (const char *__restrict __file,
+				  struct stat *__restrict __buf), stat64)
+     __nonnull ((1, 2));
+extern int __REDIRECT_NTH (fstat, (int __fd, struct stat *__buf), fstat64)
+     __nonnull ((2));
+# else
+#  define stat stat64
+#  define fstat fstat64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int stat64 (const char *__restrict __file,
+		   struct stat64 *__restrict __buf) __THROW __nonnull ((1, 2));
+extern int fstat64 (int __fd, struct stat64 *__buf) __THROW __nonnull ((2));
+#endif
+
+#ifdef __USE_ATFILE
+/* Similar to stat, get the attributes for FILE and put them in BUF.
+   Relative path names are interpreted relative to FD unless FD is
+   AT_FDCWD.  */
+# ifndef __USE_FILE_OFFSET64
+extern int fstatat (int __fd, const char *__restrict __file,
+		    struct stat *__restrict __buf, int __flag)
+     __THROW __nonnull ((2, 3));
+# else
+#  ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (fstatat, (int __fd, const char *__restrict __file,
+				     struct stat *__restrict __buf,
+				     int __flag),
+			   fstatat64) __nonnull ((2, 3));
+#  else
+#   define fstatat fstatat64
+#  endif
+# endif
+
+# ifdef __USE_LARGEFILE64
+extern int fstatat64 (int __fd, const char *__restrict __file,
+		      struct stat64 *__restrict __buf, int __flag)
+     __THROW __nonnull ((2, 3));
+# endif
+#endif
+
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
+# ifndef __USE_FILE_OFFSET64
+/* Get file attributes about FILE and put them in BUF.
+   If FILE is a symbolic link, do not follow it.  */
+extern int lstat (const char *__restrict __file,
+		  struct stat *__restrict __buf) __THROW __nonnull ((1, 2));
+# else
+#  ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (lstat,
+			   (const char *__restrict __file,
+			    struct stat *__restrict __buf), lstat64)
+     __nonnull ((1, 2));
+#  else
+#   define lstat lstat64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int lstat64 (const char *__restrict __file,
+		    struct stat64 *__restrict __buf)
+     __THROW __nonnull ((1, 2));
+# endif
+#endif
+
+/* Set file access permissions for FILE to MODE.
+   If FILE is a symbolic link, this affects its target instead.  */
+extern int chmod (const char *__file, __mode_t __mode)
+     __THROW __nonnull ((1));
+
+#ifdef __USE_MISC
+/* Set file access permissions for FILE to MODE.
+   If FILE is a symbolic link, this affects the link itself
+   rather than its target.  */
+extern int lchmod (const char *__file, __mode_t __mode)
+     __THROW __nonnull ((1));
+#endif
+
+/* Set file access permissions of the file FD is open on to MODE.  */
+#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
+extern int fchmod (int __fd, __mode_t __mode) __THROW;
+#endif
+
+#ifdef __USE_ATFILE
+/* Set file access permissions of FILE relative to
+   the directory FD is open on.  */
+extern int fchmodat (int __fd, const char *__file, __mode_t __mode,
+		     int __flag)
+     __THROW __nonnull ((2)) __wur;
+#endif /* Use ATFILE.  */
+
+
+
+/* Set the file creation mask of the current process to MASK,
+   and return the old creation mask.  */
+extern __mode_t umask (__mode_t __mask) __THROW;
+
+#ifdef	__USE_GNU
+/* Get the current `umask' value without changing it.
+   This function is only available under the GNU Hurd.  */
+extern __mode_t getumask (void) __THROW;
+#endif
+
+/* Create a new directory named PATH, with permission bits MODE.  */
+extern int mkdir (const char *__path, __mode_t __mode)
+     __THROW __nonnull ((1));
+
+#ifdef __USE_ATFILE
+/* Like mkdir, create a new directory with permission bits MODE.  But
+   interpret relative PATH names relative to the directory associated
+   with FD.  */
+extern int mkdirat (int __fd, const char *__path, __mode_t __mode)
+     __THROW __nonnull ((2));
+#endif
+
+/* Create a device file named PATH, with permission and special bits MODE
+   and device number DEV (which can be constructed from major and minor
+   device numbers with the `makedev' macro above).  */
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+extern int mknod (const char *__path, __mode_t __mode, __dev_t __dev)
+     __THROW __nonnull ((1));
+
+# ifdef __USE_ATFILE
+/* Like mknod, create a new device file with permission bits MODE and
+   device number DEV.  But interpret relative PATH names relative to
+   the directory associated with FD.  */
+extern int mknodat (int __fd, const char *__path, __mode_t __mode,
+		    __dev_t __dev) __THROW __nonnull ((2));
+# endif
+#endif
+
+
+/* Create a new FIFO named PATH, with permission bits MODE.  */
+extern int mkfifo (const char *__path, __mode_t __mode)
+     __THROW __nonnull ((1));
+
+#ifdef __USE_ATFILE
+/* Like mkfifo, create a new FIFO with permission bits MODE.  But
+   interpret relative PATH names relative to the directory associated
+   with FD.  */
+extern int mkfifoat (int __fd, const char *__path, __mode_t __mode)
+     __THROW __nonnull ((2));
+#endif
+
+#ifdef __USE_ATFILE
+/* Set file access and modification times relative to directory file
+   descriptor.  */
+extern int utimensat (int __fd, const char *__path,
+		      const struct timespec __times[2],
+		      int __flags)
+     __THROW __nonnull ((2));
+#endif
+
+#ifdef __USE_XOPEN2K8
+/* Set file access and modification times of the file associated with FD.  */
+extern int futimens (int __fd, const struct timespec __times[2]) __THROW;
+#endif
+
+/* To allow the `struct stat' structure and the file type `mode_t'
+   bits to vary without changing shared library major version number,
+   the `stat' family of functions and `mknod' are in fact inline
+   wrappers around calls to `xstat', `fxstat', `lxstat', and `xmknod',
+   which all take a leading version-number argument designating the
+   data structure and bits used.  <bits/stat.h> defines _STAT_VER with
+   the version number corresponding to `struct stat' as defined in
+   that file; and _MKNOD_VER with the version number corresponding to
+   the S_IF* macros defined therein.  It is arranged that when not
+   inlined these function are always statically linked; that way a
+   dynamically-linked executable always encodes the version number
+   corresponding to the data structures it uses, so the `x' functions
+   in the shared library can adapt without needing to recompile all
+   callers.  */
+
+#ifndef _STAT_VER
+# define _STAT_VER	0
+#endif
+#ifndef _MKNOD_VER
+# define _MKNOD_VER	0
+#endif
+
+/* Wrappers for stat and mknod system calls.  */
+#ifndef __USE_FILE_OFFSET64
+extern int __fxstat (int __ver, int __fildes, struct stat *__stat_buf)
+     __THROW __nonnull ((3));
+extern int __xstat (int __ver, const char *__filename,
+		    struct stat *__stat_buf) __THROW __nonnull ((2, 3));
+extern int __lxstat (int __ver, const char *__filename,
+		     struct stat *__stat_buf) __THROW __nonnull ((2, 3));
+extern int __fxstatat (int __ver, int __fildes, const char *__filename,
+		       struct stat *__stat_buf, int __flag)
+     __THROW __nonnull ((3, 4));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (__fxstat, (int __ver, int __fildes,
+				      struct stat *__stat_buf), __fxstat64)
+     __nonnull ((3));
+extern int __REDIRECT_NTH (__xstat, (int __ver, const char *__filename,
+				     struct stat *__stat_buf), __xstat64)
+     __nonnull ((2, 3));
+extern int __REDIRECT_NTH (__lxstat, (int __ver, const char *__filename,
+				      struct stat *__stat_buf), __lxstat64)
+     __nonnull ((2, 3));
+extern int __REDIRECT_NTH (__fxstatat, (int __ver, int __fildes,
+					const char *__filename,
+					struct stat *__stat_buf, int __flag),
+			   __fxstatat64) __nonnull ((3, 4));
+
+# else
+#  define __fxstat __fxstat64
+#  define __xstat __xstat64
+#  define __lxstat __lxstat64
+# endif
+#endif
+
+#ifdef __USE_LARGEFILE64
+extern int __fxstat64 (int __ver, int __fildes, struct stat64 *__stat_buf)
+     __THROW __nonnull ((3));
+extern int __xstat64 (int __ver, const char *__filename,
+		      struct stat64 *__stat_buf) __THROW __nonnull ((2, 3));
+extern int __lxstat64 (int __ver, const char *__filename,
+		       struct stat64 *__stat_buf) __THROW __nonnull ((2, 3));
+extern int __fxstatat64 (int __ver, int __fildes, const char *__filename,
+			 struct stat64 *__stat_buf, int __flag)
+     __THROW __nonnull ((3, 4));
+#endif
+extern int __xmknod (int __ver, const char *__path, __mode_t __mode,
+		     __dev_t *__dev) __THROW __nonnull ((2, 4));
+
+extern int __xmknodat (int __ver, int __fd, const char *__path,
+		       __mode_t __mode, __dev_t *__dev)
+     __THROW __nonnull ((3, 5));
+
+#ifdef __USE_EXTERN_INLINES
+/* Inlined versions of the real stat and mknod functions.  */
+
+__extern_inline int
+__NTH (stat (const char *__path, struct stat *__statbuf))
+{
+  return __xstat (_STAT_VER, __path, __statbuf);
+}
+
+# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+__extern_inline int
+__NTH (lstat (const char *__path, struct stat *__statbuf))
+{
+  return __lxstat (_STAT_VER, __path, __statbuf);
+}
+# endif
+
+__extern_inline int
+__NTH (fstat (int __fd, struct stat *__statbuf))
+{
+  return __fxstat (_STAT_VER, __fd, __statbuf);
+}
+
+# ifdef __USE_ATFILE
+__extern_inline int
+__NTH (fstatat (int __fd, const char *__filename, struct stat *__statbuf,
+		int __flag))
+{
+  return __fxstatat (_STAT_VER, __fd, __filename, __statbuf, __flag);
+}
+# endif
+
+# ifdef __USE_MISC
+__extern_inline int
+__NTH (mknod (const char *__path, __mode_t __mode, __dev_t __dev))
+{
+  return __xmknod (_MKNOD_VER, __path, __mode, &__dev);
+}
+# endif
+
+# ifdef __USE_ATFILE
+__extern_inline int
+__NTH (mknodat (int __fd, const char *__path, __mode_t __mode,
+		__dev_t __dev))
+{
+  return __xmknodat (_MKNOD_VER, __fd, __path, __mode, &__dev);
+}
+# endif
+
+# if defined __USE_LARGEFILE64 \
+  && (! defined __USE_FILE_OFFSET64 \
+      || (defined __REDIRECT_NTH && defined __OPTIMIZE__))
+__extern_inline int
+__NTH (stat64 (const char *__path, struct stat64 *__statbuf))
+{
+  return __xstat64 (_STAT_VER, __path, __statbuf);
+}
+
+#  if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+__extern_inline int
+__NTH (lstat64 (const char *__path, struct stat64 *__statbuf))
+{
+  return __lxstat64 (_STAT_VER, __path, __statbuf);
+}
+#  endif
+
+__extern_inline int
+__NTH (fstat64 (int __fd, struct stat64 *__statbuf))
+{
+  return __fxstat64 (_STAT_VER, __fd, __statbuf);
+}
+
+#  ifdef __USE_ATFILE
+__extern_inline int
+__NTH (fstatat64 (int __fd, const char *__filename, struct stat64 *__statbuf,
+		  int __flag))
+{
+  return __fxstatat64 (_STAT_VER, __fd, __filename, __statbuf, __flag);
+}
+#  endif
+
+# endif
+
+#endif
+
+__END_DECLS
+
+
+#endif /* sys/stat.h  */
diff --git a/REORG.TODO/io/sys/statfs.h b/REORG.TODO/io/sys/statfs.h
new file mode 100644
index 0000000000..8b78141460
--- /dev/null
+++ b/REORG.TODO/io/sys/statfs.h
@@ -0,0 +1,67 @@
+/* Definitions for getting information about a filesystem.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_SYS_STATFS_H
+#define	_SYS_STATFS_H	1
+
+#include <features.h>
+
+/* Get the system-specific definition of `struct statfs'.  */
+#include <bits/statfs.h>
+
+__BEGIN_DECLS
+
+/* Return information about the filesystem on which FILE resides.  */
+#ifndef __USE_FILE_OFFSET64
+extern int statfs (const char *__file, struct statfs *__buf)
+     __THROW __nonnull ((1, 2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (statfs,
+			   (const char *__file, struct statfs *__buf),
+			   statfs64) __nonnull ((1, 2));
+# else
+#  define statfs statfs64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int statfs64 (const char *__file, struct statfs64 *__buf)
+     __THROW __nonnull ((1, 2));
+#endif
+
+/* Return information about the filesystem containing the file FILDES
+   refers to.  */
+#ifndef __USE_FILE_OFFSET64
+extern int fstatfs (int __fildes, struct statfs *__buf)
+     __THROW __nonnull ((2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (fstatfs, (int __fildes, struct statfs *__buf),
+			   fstatfs64) __nonnull ((2));
+# else
+#  define fstatfs fstatfs64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int fstatfs64 (int __fildes, struct statfs64 *__buf)
+     __THROW __nonnull ((2));
+#endif
+
+__END_DECLS
+
+#endif	/* sys/statfs.h */
diff --git a/REORG.TODO/io/sys/statvfs.h b/REORG.TODO/io/sys/statvfs.h
new file mode 100644
index 0000000000..19ac18f6e0
--- /dev/null
+++ b/REORG.TODO/io/sys/statvfs.h
@@ -0,0 +1,90 @@
+/* Definitions for getting information about a filesystem.
+   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_SYS_STATVFS_H
+#define	_SYS_STATVFS_H	1
+
+#include <features.h>
+
+/* Get the system-specific definition of `struct statfs'.  */
+#include <bits/statvfs.h>
+
+#ifndef __USE_FILE_OFFSET64
+# ifndef __fsblkcnt_t_defined
+typedef __fsblkcnt_t fsblkcnt_t; /* Type to count file system blocks.  */
+#  define __fsblkcnt_t_defined
+# endif
+# ifndef __fsfilcnt_t_defined
+typedef __fsfilcnt_t fsfilcnt_t; /* Type to count file system inodes.  */
+#  define __fsfilcnt_t_defined
+# endif
+#else
+# ifndef __fsblkcnt_t_defined
+typedef __fsblkcnt64_t fsblkcnt_t; /* Type to count file system blocks.  */
+#  define __fsblkcnt_t_defined
+# endif
+# ifndef __fsfilcnt_t_defined
+typedef __fsfilcnt64_t fsfilcnt_t; /* Type to count file system inodes.  */
+#  define __fsfilcnt_t_defined
+# endif
+#endif
+
+__BEGIN_DECLS
+
+/* Return information about the filesystem on which FILE resides.  */
+#ifndef __USE_FILE_OFFSET64
+extern int statvfs (const char *__restrict __file,
+		    struct statvfs *__restrict __buf)
+     __THROW __nonnull ((1, 2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (statvfs,
+			   (const char *__restrict __file,
+			    struct statvfs *__restrict __buf), statvfs64)
+     __nonnull ((1, 2));
+# else
+#  define statvfs statvfs64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int statvfs64 (const char *__restrict __file,
+		      struct statvfs64 *__restrict __buf)
+     __THROW __nonnull ((1, 2));
+#endif
+
+/* Return information about the filesystem containing the file FILDES
+   refers to.  */
+#ifndef __USE_FILE_OFFSET64
+extern int fstatvfs (int __fildes, struct statvfs *__buf)
+     __THROW __nonnull ((2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (fstatvfs, (int __fildes, struct statvfs *__buf),
+			   fstatvfs64) __nonnull ((2));
+# else
+#  define fstatvfs fstatvfs64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int fstatvfs64 (int __fildes, struct statvfs64 *__buf)
+     __THROW __nonnull ((2));
+#endif
+
+__END_DECLS
+
+#endif	/* sys/statvfs.h */
diff --git a/REORG.TODO/io/sys/vfs.h b/REORG.TODO/io/sys/vfs.h
new file mode 100644
index 0000000000..fa22d31c4c
--- /dev/null
+++ b/REORG.TODO/io/sys/vfs.h
@@ -0,0 +1,4 @@
+/* Other systems declare `struct statfs' et al in <sys/vfs.h>,
+   so we have this file to be compatible with programs expecting it.  */
+
+#include <sys/statfs.h>
diff --git a/REORG.TODO/io/test-lfs.c b/REORG.TODO/io/test-lfs.c
new file mode 100644
index 0000000000..14773544da
--- /dev/null
+++ b/REORG.TODO/io/test-lfs.c
@@ -0,0 +1,241 @@
+/* Some basic tests for LFS.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <error.h>
+#include <errno.h>
+#include <sys/resource.h>
+
+/* Prototype for our test function.  */
+extern void do_prepare (int argc, char *argv[]);
+extern int do_test (int argc, char *argv[]);
+
+/* We have a preparation function.  */
+#define PREPARE do_prepare
+
+/* We might need a bit longer timeout.  */
+#define TIMEOUT 20 /* sec */
+
+/* This defines the `main' function and some more.  */
+#include <test-skeleton.c>
+
+/* These are for the temporary file we generate.  */
+char *name;
+int fd;
+
+/* 2^31 = 2GB.  */
+#define TWO_GB 2147483648LL
+
+void
+do_prepare (int argc, char *argv[])
+{
+  size_t name_len;
+  struct rlimit64 rlim;
+
+  name_len = strlen (test_dir);
+  name = xmalloc (name_len + sizeof ("/lfsXXXXXX"));
+  mempcpy (mempcpy (name, test_dir, name_len),
+           "/lfsXXXXXX", sizeof ("/lfsXXXXXX"));
+
+  /* Open our test file.   */
+  fd = mkstemp64 (name);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  /* Fail silently.  */
+	  error (0, 0, "open64 is not supported");
+	  exit (EXIT_SUCCESS);
+	}
+      else
+	error (EXIT_FAILURE, errno, "cannot create temporary file");
+    }
+  add_temp_file (name);
+
+  if (getrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
+    {
+      error (0, errno, "cannot get resource limit");
+      exit (0);
+    }
+  if (rlim.rlim_cur < TWO_GB + 200)
+    {
+      rlim.rlim_cur = TWO_GB + 200;
+      if (setrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
+	{
+	  error (0, errno, "cannot reset file size limits");
+	  exit (0);
+	}
+    }
+}
+
+static void
+test_ftello (void)
+{
+  FILE *f;
+  int ret;
+  off64_t pos;
+
+  f = fopen64 (name, "w");
+
+  ret = fseeko64 (f, TWO_GB+100, SEEK_SET);
+  if (ret == -1 && errno == ENOSYS)
+    {
+      error (0, 0, "fseeko64 is not supported.");
+      exit (EXIT_SUCCESS);
+    }
+  if (ret == -1 && errno == EINVAL)
+    {
+      error (0, 0, "LFS seems not to be supported");
+      exit (EXIT_SUCCESS);
+    }
+  if (ret == -1)
+    {
+      error (0, errno, "fseeko64 failed with error");
+      exit (EXIT_FAILURE);
+    }
+
+  ret = fwrite ("Hello", 1, 5, f);
+  if (ret == -1 && errno == EFBIG)
+    {
+      error (0, errno, "LFS seems not to be supported");
+      exit (EXIT_SUCCESS);
+    }
+
+  if (ret == -1 && errno == ENOSPC)
+    {
+      error (0, 0, "Not enough space to write file.");
+      exit (EXIT_SUCCESS);
+    }
+
+  if (ret != 5)
+    error (EXIT_FAILURE, errno, "Cannot write test string to large file");
+
+  pos = ftello64 (f);
+
+  if (pos != TWO_GB+105)
+    {
+      error (0, 0, "ftello64 gives wrong result.");
+      exit (EXIT_FAILURE);
+    }
+
+  fclose (f);
+}
+
+int
+do_test (int argc, char *argv[])
+{
+  int ret, fd2;
+  struct stat64 statbuf;
+
+  ret = lseek64 (fd, TWO_GB+100, SEEK_SET);
+  if (ret == -1 && errno == ENOSYS)
+    {
+      error (0, 0, "lseek64 is not supported.");
+      exit (EXIT_SUCCESS);
+    }
+  if (ret == -1 && errno == EINVAL)
+    {
+      error (0, 0, "LFS seems not to be supported.");
+      exit (EXIT_SUCCESS);
+    }
+  if (ret == -1)
+    {
+      error (0, errno, "lseek64 failed with error");
+      exit (EXIT_FAILURE);
+    }
+  off64_t offset64 = lseek64 (fd, 0, SEEK_CUR);
+  if (offset64 != TWO_GB + 100)
+    {
+      error (0, 0, "lseek64 did not return expected offset");
+      exit (EXIT_FAILURE);
+    }
+  off_t offset = lseek (fd, 0, SEEK_CUR);
+  if (sizeof (off_t) < sizeof (off64_t))
+    {
+      if (offset != -1 || errno != EOVERFLOW)
+	{
+	  error (0, 0, "lseek did not fail with EOVERFLOW");
+	  exit (EXIT_FAILURE);
+	}
+    }
+  else
+    if (offset != TWO_GB + 100)
+      {
+	error (0, 0, "lseek did not return expected offset");
+	exit (EXIT_FAILURE);
+      }
+
+  ret = write (fd, "Hello", 5);
+  if (ret == -1 && errno == EFBIG)
+    {
+      error (0, 0, "LFS seems not to be supported.");
+      exit (EXIT_SUCCESS);
+    }
+
+  if (ret == -1 && errno == ENOSPC)
+    {
+      error (0, 0, "Not enough space to write file.");
+      exit (EXIT_SUCCESS);
+    }
+
+  if (ret != 5)
+    error (EXIT_FAILURE, errno, "cannot write test string to large file");
+
+  ret = close (fd);
+
+  if (ret == -1)
+    error (EXIT_FAILURE, errno, "error closing file");
+
+  ret = stat64 (name, &statbuf);
+
+  if (ret == -1 && (errno == ENOSYS || errno == EOVERFLOW))
+    error (0, 0, "stat64 is not supported.");
+  else if (ret == -1)
+    error (EXIT_FAILURE, errno, "cannot stat file `%s'", name);
+  else if (statbuf.st_size != (TWO_GB + 100 + 5))
+    error (EXIT_FAILURE, 0, "stat reported size %lld instead of %lld.",
+	   (long long int) statbuf.st_size, (TWO_GB + 100 + 5));
+
+  fd2 = openat64 (AT_FDCWD, name, O_RDWR);
+  if (fd2 == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  /* Silently ignore this test.  */
+	  error (0, 0, "openat64 is not supported");
+	}
+      else
+	error (EXIT_FAILURE, errno, "openat64 failed to open big file");
+    }
+  else
+    {
+      ret = close (fd2);
+
+      if (ret == -1)
+	error (EXIT_FAILURE, errno, "error closing file");
+    }
+
+  test_ftello ();
+
+  return 0;
+}
diff --git a/REORG.TODO/io/test-stat.c b/REORG.TODO/io/test-stat.c
new file mode 100644
index 0000000000..e0ff992da7
--- /dev/null
+++ b/REORG.TODO/io/test-stat.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   Contributed by Maciej W. Rozycki <macro@ds2.pg.gda.pl>, 2000.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* We need to define:
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE64_SOURCE 1
+*/
+
+#include <assert.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+static int
+do_test (void)
+{
+  /* With _FILE_OFFSET_BITS=64 struct stat and struct stat64 should
+     be identical.  */
+  assert (sizeof (struct stat)
+	  == sizeof (struct stat64));
+  assert (offsetof (struct stat, st_dev)
+	  == offsetof (struct stat64, st_dev));
+  assert (offsetof (struct stat, st_ino)
+	  == offsetof (struct stat64, st_ino));
+  assert (offsetof (struct stat, st_mode)
+	  == offsetof (struct stat64, st_mode));
+  assert (offsetof (struct stat, st_nlink)
+	  == offsetof (struct stat64, st_nlink));
+  assert (offsetof (struct stat, st_uid)
+	  == offsetof (struct stat64, st_uid));
+  assert (offsetof (struct stat, st_gid)
+	  == offsetof (struct stat64, st_gid));
+  assert (offsetof (struct stat, st_rdev)
+	  == offsetof (struct stat64, st_rdev));
+  assert (offsetof (struct stat, st_size)
+	  == offsetof (struct stat64, st_size));
+  assert (offsetof (struct stat, st_atime)
+	  == offsetof (struct stat64, st_atime));
+  assert (offsetof (struct stat, st_mtime)
+	  == offsetof (struct stat64, st_mtime));
+  assert (offsetof (struct stat, st_ctime)
+	  == offsetof (struct stat64, st_ctime));
+  assert (offsetof (struct stat, st_blksize)
+	  == offsetof (struct stat64, st_blksize));
+  assert (offsetof (struct stat, st_blocks)
+	  == offsetof (struct stat64, st_blocks));
+#if 0
+  /* Some systems have st_fstype but not all.  Don't check it for now.  */
+  assert (offsetof (struct stat, st_fstype)
+	  == offsetof (struct stat64, st_fstype));
+#endif
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/REORG.TODO/io/test-stat2.c b/REORG.TODO/io/test-stat2.c
new file mode 100644
index 0000000000..247a6e0e39
--- /dev/null
+++ b/REORG.TODO/io/test-stat2.c
@@ -0,0 +1,87 @@
+/* Test consistence of results of stat and stat64.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+int
+main (int argc, char *argv[])
+{
+  int i;
+  int result = 0;
+
+  for (i = 1; i < argc; ++i)
+    {
+      struct stat st;
+      struct stat64 st64;
+      int same;
+
+      if (stat (argv[i], &st) != 0)
+	{
+	  if (errno != EOVERFLOW)
+	    {
+	      /* Something is wrong.  */
+	      printf ("stat(\"%s\",....) failed: %m", argv[i]);
+	      result = 1;
+	    }
+	  continue;
+	}
+
+      if (stat64 (argv[i], &st64) != 0)
+	{
+	  if (errno != ENOSYS)
+	    {
+	      /* Something is wrong.  */
+	      printf ("stat64(\"%s\",....) failed: %m", argv[i]);
+	      result = 1;
+	    }
+	  continue;
+	}
+
+      printf ("\nName: %s\n", argv[i]);
+
+#define TEST(name) \
+      same = st.name == st64.name;					      \
+      printf (#name ": %jd vs %jd  %s\n",				      \
+	      (intmax_t) st.name, (intmax_t) st64.name,			      \
+	      same ? "OK" : "FAIL");					      \
+      result |= ! same
+
+      TEST (st_dev);
+      TEST (st_ino);
+      TEST (st_mode);
+      TEST (st_nlink);
+      TEST (st_uid);
+      TEST (st_gid);
+#ifdef _STATBUF_ST_RDEV
+      TEST (st_rdev);
+#endif
+#ifdef _STATBUF_ST_BLKSIZE
+      TEST (st_blksize);
+#endif
+      TEST (st_blocks);
+      TEST (st_atime);
+      TEST (st_mtime);
+      TEST (st_ctime);
+    }
+
+  return result;
+}
diff --git a/REORG.TODO/io/test-utime.c b/REORG.TODO/io/test-utime.c
new file mode 100644
index 0000000000..3e7583c9c0
--- /dev/null
+++ b/REORG.TODO/io/test-utime.c
@@ -0,0 +1,141 @@
+/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <utime.h>
+#include <time.h>
+
+int
+main (int argc, char *argv[])
+{
+  char file[L_tmpnam];
+  struct utimbuf ut;
+  struct stat st;
+  struct stat stnow;
+  time_t now1, now2;
+  int fd;
+
+  if (tmpnam (file) == 0)
+    {
+      perror ("tmpnam");
+      return 1;
+    }
+
+  fd = creat (file, 0666);
+  if (fd < 0)
+    {
+      perror ("creat");
+      return 1;
+    }
+  close (fd);
+
+  /* Test utime with arg */
+  ut.actime = 500000000;
+  ut.modtime = 500000001;
+  if (utime (file, &ut))
+    {
+      perror ("utime");
+      remove (file);
+      return 1;
+    }
+
+  if (stat (file, &st))
+    {
+      perror ("stat");
+      remove (file);
+      return 1;
+    }
+
+  /* Test utime with NULL.
+     Since there's a race condition possible here, we check
+     the time before and after the call to utime.  */
+  now1 = time (NULL);
+  if (now1 == (time_t)-1)
+    {
+      perror ("time");
+      remove (file);
+      return 1;
+    }
+
+  /* The clocks used to set the modification time and that used in the
+     time() call need not be the same.  They need not have the same
+     precision.  Therefore we delay the following operation by one
+     second which makes sure we can compare with second precision.  */
+  sleep (1);
+
+  if (utime (file, NULL))
+    {
+      perror ("utime NULL");
+      remove (file);
+      return 1;
+    }
+
+  sleep (1);
+
+  now2 = time (NULL);
+  if (now2 == (time_t)-1)
+    {
+      perror ("time");
+      remove (file);
+      return 1;
+    }
+
+  if (stat (file, &stnow))
+    {
+      perror ("stat");
+      remove (file);
+      return 1;
+    }
+
+  remove (file);
+
+  if (st.st_mtime != ut.modtime)
+    {
+      printf ("modtime %jd != %jd\n",
+	      (intmax_t) st.st_mtime, (intmax_t) ut.modtime);
+      return 1;
+    }
+
+  if (st.st_atime != ut.actime)
+    {
+      printf ("actime %jd != %jd\n",
+	      (intmax_t) st.st_atime, (intmax_t) ut.actime);
+      return 1;
+    }
+
+  if (stnow.st_mtime < now1 || stnow.st_mtime > now2)
+    {
+      printf ("modtime %jd <%jd >%jd\n",
+	      (intmax_t) stnow.st_mtime, (intmax_t) now1, (intmax_t) now2);
+      return 1;
+    }
+
+  if (stnow.st_atime < now1 || stnow.st_atime > now2)
+    {
+      printf ("actime %jd <%jd >%jd\n",
+	      (intmax_t) stnow.st_atime, (intmax_t) now1, (intmax_t) now2);
+      return 1;
+    }
+
+  puts ("Test succeeded.");
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-faccessat.c b/REORG.TODO/io/tst-faccessat.c
new file mode 100644
index 0000000000..7bdeed008c
--- /dev/null
+++ b/REORG.TODO/io/tst-faccessat.c
@@ -0,0 +1,213 @@
+/* Test for faccessat function.  */
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-faccessat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty save the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  /* Before closing the file, try using this file descriptor to open
+     another file.  This must fail.  */
+  if (faccessat (fd, "should-not-work", F_OK, AT_EACCESS) != -1)
+    {
+      puts ("faccessat using descriptor for normal file worked");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("\
+error for faccessat using descriptor for normal file not ENOTDIR ");
+      return 1;
+    }
+
+  close (fd);
+
+  int result = 0;
+
+  if (faccessat (dir_fd, "some-file", F_OK, AT_EACCESS))
+    {
+      printf ("faccessat F_OK: %m\n");
+      result = 1;
+    }
+  if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS))
+    {
+      printf ("faccessat W_OK: %m\n");
+      result = 1;
+    }
+
+  errno = 0;
+  if (faccessat (dir_fd, "some-file", X_OK, AT_EACCESS) == 0
+      || errno != EACCES)
+    {
+      printf ("faccessat X_OK on nonexecutable: %m\n");
+      result = 1;
+    }
+
+  if (fchmodat (dir_fd, "some-file", 0400, 0) != 0)
+    {
+      printf ("fchownat failed: %m\n");
+      return 1;
+    }
+
+  if (faccessat (dir_fd, "some-file", R_OK, AT_EACCESS))
+    {
+      printf ("faccessat R_OK: %m\n");
+      result = 1;
+    }
+
+  errno = 0;
+  if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS) == 0
+      ? (geteuid () != 0) : (errno != EACCES))
+    {
+      printf ("faccessat W_OK on unwritable file: %m\n");
+      result = 1;
+    }
+
+  /* Create a file descriptor which is closed again right away.  */
+  int dir_fd2 = dup (dir_fd);
+  if (dir_fd2 == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  close (dir_fd2);
+
+  /* With the file descriptor closed the next call must fail.  */
+  if (faccessat (dir_fd2, "some-file", F_OK, AT_EACCESS) != -1)
+    {
+      puts ("faccessat using closed descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("faccessat using closed descriptor did not set EBADF");
+      return 1;
+    }
+
+  /* Same with a non-existing file.  */
+  if (faccessat (dir_fd2, "non-existing-file", F_OK, AT_EACCESS) != -1)
+    {
+      puts ("2nd faccessat using closed descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("2nd faccessat using closed descriptor did not set EBADF");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      result = 1;
+    }
+
+  close (dir_fd);
+
+  fd = faccessat (-1, "some-file", F_OK, AT_EACCESS);
+  if (fd != -1)
+    {
+      puts ("faccessat using -1 descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("faccessat using -1 descriptor did not set EBADF");
+      return 1;
+    }
+
+  return result;
+}
diff --git a/REORG.TODO/io/tst-fchmodat.c b/REORG.TODO/io/tst-fchmodat.c
new file mode 100644
index 0000000000..7d4a8717ff
--- /dev/null
+++ b/REORG.TODO/io/tst-fchmodat.c
@@ -0,0 +1,192 @@
+/* Test for fchmodat function.  */
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-fchmodat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty save the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  umask (022);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  /* Before closing the file, try using this file descriptor to open
+     another file.  This must fail.  */
+  if (fchmodat (fd, "some-file", 0400, 0) != -1)
+    {
+      puts ("fchmodat using descriptor for normal file worked");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("\
+error for fchmodat using descriptor for normal file not ENOTDIR ");
+      return 1;
+    }
+
+  close (fd);
+
+  if ((st1.st_mode & 0777) != 0644)
+    {
+      printf ("openat created mode %04o, not 0644\n", (st1.st_mode & 0777));
+      return 1;
+    }
+
+  if (fchmodat (dir_fd, "some-file", 0400, 0) != 0)
+    {
+      puts ("fchownat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+
+  if ((st2.st_mode & 0777) != 0400)
+    {
+      puts ("mode change failed");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  /* Create a file descriptor which is closed again right away.  */
+  int dir_fd2 = dup (dir_fd);
+  if (dir_fd2 == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  close (dir_fd2);
+
+  if (fchmodat (dir_fd2, "some-file", 0400, 0) != -1)
+    {
+      puts ("fchmodat using closed descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fchmodat using closed descriptor not EBADF ");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  if (fchmodat (-1, "some-file", 0400, 0) != -1)
+    {
+      puts ("fchmodat using invalid descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fchmodat using invalid descriptor not EBADF ");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-fchownat.c b/REORG.TODO/io/tst-fchownat.c
new file mode 100644
index 0000000000..e8adf6229f
--- /dev/null
+++ b/REORG.TODO/io/tst-fchownat.c
@@ -0,0 +1,194 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+#if _POSIX_CHOWN_RESTRICTED == 0
+  if (pathconf (test_dir, _PC_CHOWN_RESTRICTED) != 0)
+#endif
+    {
+      uid_t uid = getuid ();
+      if (uid != 0)
+	{
+	  puts ("need root privileges");
+	  exit (0);
+	}
+    }
+
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-fchownat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  /* Before closing the file, try using this file descriptor to open
+     another file.  This must fail.  */
+  if (fchownat (fd, "some-file", 1, 1, 0) != -1)
+    {
+      puts ("fchownat using descriptor for normal file worked");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("\
+error for fchownat using descriptor for normal file not ENOTDIR ");
+      return 1;
+    }
+
+  close (fd);
+
+  if (fchownat (dir_fd, "some-file", st1.st_uid + 1, st1.st_gid + 1, 0) != 0)
+    {
+      puts ("fchownat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+
+  if (st1.st_uid + 1 != st2.st_uid || st1.st_gid + 1 != st2.st_gid)
+    {
+      puts ("owner change failed");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  /* Create a file descriptor which is closed again right away.  */
+  int dir_fd2 = dup (dir_fd);
+  if (dir_fd2 == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  close (dir_fd2);
+
+  if (fchownat (dir_fd2, "some-file", 1, 1, 0) != -1)
+    {
+      puts ("fchownat using closed descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fchownat using closed descriptor not EBADF ");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  if (fchownat (-1, "some-file", 1, 1, 0) != -1)
+    {
+      puts ("fchownat using invalid descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fchownat using invalid descriptor not EBADF ");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-fcntl.c b/REORG.TODO/io/tst-fcntl.c
new file mode 100644
index 0000000000..b7ea288e6c
--- /dev/null
+++ b/REORG.TODO/io/tst-fcntl.c
@@ -0,0 +1,198 @@
+/* Tests for fcntl.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+/* Prototype for our test function.  */
+extern void do_prepare (int argc, char *argv[]);
+extern int do_test (int argc, char *argv[]);
+
+/* We have a preparation function.  */
+#define PREPARE do_prepare
+
+#include "../test-skeleton.c"
+
+
+/* Name of the temporary files.  */
+static char *name;
+
+/* File descriptor to temporary file.  */
+static int fd;
+
+void
+do_prepare (int argc, char *argv[])
+{
+   size_t name_len;
+
+   name_len = strlen (test_dir);
+   name = xmalloc (name_len + sizeof ("/fcntlXXXXXX"));
+   mempcpy (mempcpy (name, test_dir, name_len),
+	    "/fcntlXXXXXX", sizeof ("/fcntlXXXXXX"));
+  /* Create the temporary file.  */
+  fd = mkstemp (name);
+  if (fd == -1)
+    {
+      printf ("cannot open temporary file: %m\n");
+      exit (1);
+    }
+   add_temp_file (name);
+}
+
+
+int
+do_test (int argc, char *argv[])
+{
+  int fd2;
+  int fd3;
+  struct stat64 st;
+  int val;
+  int result = 0;
+
+  if (fstat64 (fd, &st) != 0)
+    {
+      printf ("cannot stat test file: %m\n");
+      return 1;
+    }
+  if (! S_ISREG (st.st_mode) || st.st_size != 0)
+    {
+      puts ("file not created correctly");
+      return 1;
+    }
+
+  /* Get the flags with fcntl().  */
+  val = fcntl (fd, F_GETFL);
+  if (val == -1)
+    {
+      printf ("fcntl(fd, F_GETFL) failed: %m\n");
+      result = 1;
+    }
+  else if ((val & O_ACCMODE) != O_RDWR)
+    {
+      puts ("temporary file not opened for read and write");
+      result = 1;
+    }
+
+  /* Set the flags to something else.  */
+  if (fcntl (fd, F_SETFL, O_RDONLY) == -1)
+    {
+      printf ("fcntl(fd, F_SETFL, O_RDONLY) failed: %m\n");
+      result = 1;
+    }
+
+  val = fcntl (fd, F_GETFL);
+  if (val == -1)
+    {
+      printf ("fcntl(fd, F_GETFL) after F_SETFL failed: %m\n");
+      result = 1;
+    }
+  else if ((val & O_ACCMODE) != O_RDWR)
+    {
+      puts ("temporary file access mode changed");
+      result = 1;
+    }
+
+  /* Set the flags to something else.  */
+  if (fcntl (fd, F_SETFL, O_APPEND) == -1)
+    {
+      printf ("fcntl(fd, F_SETFL, O_APPEND) failed: %m\n");
+      result = 1;
+    }
+
+  val = fcntl (fd, F_GETFL);
+  if (val == -1)
+    {
+      printf ("fcntl(fd, F_GETFL) after second F_SETFL failed: %m\n");
+      result = 1;
+    }
+  else if ((val & O_APPEND) == 0)
+    {
+      puts ("O_APPEND not set");
+      result = 1;
+    }
+
+  val = fcntl (fd, F_GETFD);
+  if (val == -1)
+    {
+      printf ("fcntl(fd, F_GETFD) failed: %m\n");
+      result = 1;
+    }
+  else if (fcntl (fd, F_SETFD, val | FD_CLOEXEC) == -1)
+    {
+      printf ("fcntl(fd, F_SETFD, FD_CLOEXEC) failed: %m\n");
+      result = 1;
+    }
+  else
+    {
+      val = fcntl (fd, F_GETFD);
+      if (val == -1)
+	{
+	  printf ("fcntl(fd, F_GETFD) after F_SETFD failed: %m\n");
+	  result = 1;
+	}
+      else if ((val & FD_CLOEXEC) == 0)
+	{
+	  puts ("FD_CLOEXEC not set");
+	  result = 1;
+	}
+    }
+
+  /* Get a number of a free descriptor.  If /dev/null is not available
+     don't continue testing.  */
+  fd2 = open (_PATH_DEVNULL, O_RDWR);
+  if (fd2 == -1)
+    return result;
+  close (fd2);
+
+  fd3 = fcntl (fd, F_DUPFD, fd2 + 1);
+  if (fd3 == -1)
+    {
+      printf ("fcntl(fd, F_DUPFD, %d) failed: %m\n", fd2 + 1);
+      result = 1;
+    }
+  else if (fd3 <= fd2)
+    {
+      printf ("F_DUPFD returned %d which is not larger than %d\n", fd3, fd2);
+      result = 1;
+    }
+
+  if (fd3 != -1)
+    {
+      val = fcntl (fd3, F_GETFD);
+      if (val == -1)
+	{
+	  printf ("fcntl(fd3, F_GETFD) after F_DUPFD failed: %m\n");
+	  result = 1;
+	}
+      else if ((val & FD_CLOEXEC) != 0)
+	{
+	  puts ("FD_CLOEXEC still set");
+	  result = 1;
+	}
+
+      close (fd3);
+    }
+
+  return result;
+}
diff --git a/REORG.TODO/io/tst-fstatat.c b/REORG.TODO/io/tst-fstatat.c
new file mode 100644
index 0000000000..4766bb2e71
--- /dev/null
+++ b/REORG.TODO/io/tst-fstatat.c
@@ -0,0 +1,189 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-fstatat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+
+  /* Before closing the file, try using this file descriptor to open
+     another file.  This must fail.  */
+  if (fstatat64 (fd, "some-file", &st1, 0) != -1)
+    {
+      puts ("fstatatat using descriptor for normal file worked");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("error for fstatat using descriptor for normal file not ENOTDIR ");
+      return 1;
+    }
+
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  close (fd);
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+
+  if (st1.st_dev != st2.st_dev
+      || st1.st_ino != st2.st_ino
+      || st1.st_size != st2.st_size)
+    {
+      puts ("stat results do not match");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) == 0)
+    {
+      puts ("second fstatat64 succeeded");
+      return 1;
+    }
+  if (errno != ENOENT)
+    {
+      puts ("second fstatat64 did not fail with ENOENT");
+      return 1;
+    }
+
+  /* Create a file descriptor which is closed again right away.  */
+  int dir_fd2 = dup (dir_fd);
+  if (dir_fd2 == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  close (dir_fd2);
+
+  if (fstatat64 (dir_fd2, "some-file", &st1, 0) != -1)
+    {
+      puts ("fstatat64 using closed descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fstatat using closed descriptor not EBADF ");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  if (fstatat64 (-1, "some-file", &st1, 0) != -1)
+    {
+      puts ("fstatat64 using invalid descriptor worked");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for fstatat using invalid descriptor not EBADF ");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-fts-lfs.c b/REORG.TODO/io/tst-fts-lfs.c
new file mode 100644
index 0000000000..bc169342f8
--- /dev/null
+++ b/REORG.TODO/io/tst-fts-lfs.c
@@ -0,0 +1,2 @@
+#define _FILE_OFFSET_BITS 64
+#include "tst-fts.c"
diff --git a/REORG.TODO/io/tst-fts.c b/REORG.TODO/io/tst-fts.c
new file mode 100644
index 0000000000..648b402caf
--- /dev/null
+++ b/REORG.TODO/io/tst-fts.c
@@ -0,0 +1,231 @@
+/* Simple test for some fts functions.
+   Copyright (C) 2015-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fts.h>
+
+#include <errno.h>
+#include <error.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static void prepare (void);
+static int do_test (void);
+#define PREPARE(argc, argv)     prepare ()
+#define TEST_FUNCTION           do_test ()
+#include "../test-skeleton.c"
+
+static char *fts_test_dir;
+
+static void
+make_dir (const char *dirname)
+{
+  char *name;
+  if (asprintf (&name, "%s/%s", fts_test_dir, dirname) < 0)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  if (mkdir (name, 0700) < 0)
+    {
+      printf ("cannot create dir \"%s\": %m\n", name);
+      exit (1);
+    }
+
+  add_temp_file (name);
+}
+
+static void
+make_file (const char *filename)
+{
+  char *name;
+  if (asprintf (&name, "%s/%s", fts_test_dir, filename) < 0)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  int fd = open (name, O_WRONLY | O_CREAT | O_EXCL, 0600);
+  if (fd < 0)
+    {
+      printf ("cannot create file \"%s\": %m\n", name);
+      exit (1);
+    }
+  close (fd);
+
+  add_temp_file (name);
+}
+
+static void
+prepare (void)
+{
+  char *dirbuf;
+  char dir_name[] = "/tst-fts.XXXXXX";
+
+  if (asprintf (&dirbuf, "%s%s", test_dir, dir_name) < 0)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+  fts_test_dir = dirbuf;
+
+  make_file ("12");
+  make_file ("345");
+  make_file ("6789");
+
+  make_dir ("aaa");
+  make_file ("aaa/1234");
+  make_file ("aaa/5678");
+
+  make_dir ("bbb");
+  make_file ("bbb/1234");
+  make_file ("bbb/5678");
+  make_file ("bbb/90ab");
+}
+
+/* Largest name wins, otherwise strcmp.  */
+static int
+compare_ents (const FTSENT **ent1, const FTSENT **ent2)
+{
+  short len1 = (*ent1)->fts_namelen;
+  short len2 = (*ent2)->fts_namelen;
+  if (len1 != len2)
+    return len1 - len2;
+  else
+    {
+      const char *name1 = (*ent1)->fts_name;
+      const char *name2 = (*ent2)->fts_name;
+      return strcmp (name1, name2);
+    }
+}
+
+/* Count the number of files seen as children.  */
+static int files = 0;
+
+static void
+children (FTS *fts)
+{
+  FTSENT *child = fts_children (fts, 0);
+  if (child == NULL && errno != 0)
+    {
+      printf ("FAIL: fts_children: %m\n");
+      exit (1);
+    }
+
+  while (child != NULL)
+    {
+      short level = child->fts_level;
+      const char *name = child->fts_name;
+      if (child->fts_info == FTS_F || child->fts_info == FTS_NSOK)
+	{
+	  files++;
+	  printf ("%*s%s\n", 2 * level, "", name);
+	}
+      child = child->fts_link;
+    }
+}
+
+/* Count the number of dirs seen in the test.  */
+static int dirs = 0;
+
+static int
+do_test (void)
+{
+  char *paths[2] = { fts_test_dir, NULL };
+  FTS *fts;
+  fts = fts_open (paths, FTS_LOGICAL, &compare_ents);
+  if (fts == NULL)
+    {
+      printf ("FAIL: fts_open: %m\n");
+      exit (1);
+    }
+
+  FTSENT *ent;
+  while ((ent = fts_read (fts)) != NULL)
+    {
+      const char *name = ent->fts_name;
+      short level = ent->fts_level;
+      switch (ent->fts_info)
+	{
+	case FTS_F:
+	  /* Don't show anything, children will have on parent dir.  */
+	  break;
+
+	case FTS_D:
+	  printf ("%*s%s =>\n", 2 * level, "", name);
+	  children (fts);
+	  break;
+
+	case FTS_DP:
+	  dirs++;
+	  printf ("%*s<= %s\n", 2 * level, "", name);
+	  break;
+
+	case FTS_NS:
+	case FTS_ERR:
+	  printf ("FAIL: fts_read ent: %s\n", strerror (ent->fts_errno));
+	  exit (1);
+	  break;
+
+	default:
+	  printf ("FAIL: unexpected fts_read ent %s\n", name);
+	  exit (1);
+	  break;
+	}
+    }
+  /* fts_read returns NULL when done (and clears errno)
+     or when an error occured (with errno set).  */
+  if (errno != 0)
+    {
+      printf ("FAIL: fts_read: %m\n");
+      exit (1);
+    }
+
+  if (fts_close (fts) != 0)
+    {
+      printf ("FAIL: fts_close: %m\n");
+      exit (1);
+    }
+
+  if (files != 8)
+    {
+      printf ("FAIL: Unexpected number of files: %d\n", files);
+      return 1;
+    }
+
+  if (dirs != 3)
+    {
+      printf ("FAIL: Unexpected number of dirs: %d\n", dirs);
+      return 1;
+    }
+
+  puts ("PASS");
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-futimesat.c b/REORG.TODO/io/tst-futimesat.c
new file mode 100644
index 0000000000..af58ad06dd
--- /dev/null
+++ b/REORG.TODO/io/tst-futimesat.c
@@ -0,0 +1,148 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-futimesat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  close (fd);
+
+  struct timeval tv[2];
+  tv[0].tv_sec = st1.st_atime + 1;
+  tv[0].tv_usec = 0;
+  tv[1].tv_sec = st1.st_mtime + 1;
+  tv[1].tv_usec = 0;
+  if (futimesat (dir_fd, "some-file", tv) != 0)
+    {
+      puts ("futimesat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+
+  if (st2.st_mtime != tv[1].tv_sec
+#ifdef _STATBUF_ST_NSEC
+      || st2.st_mtim.tv_nsec != 0
+#endif
+      )
+    {
+      puts ("stat shows different mtime");
+      return 1;
+    }
+
+
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-getcwd.c b/REORG.TODO/io/tst-getcwd.c
new file mode 100644
index 0000000000..726758bb51
--- /dev/null
+++ b/REORG.TODO/io/tst-getcwd.c
@@ -0,0 +1,163 @@
+/* Test of getcwd function.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/param.h>
+
+
+#define TEST_FUNCTION do_test ()
+static int
+do_test (void)
+{
+  char thepath[4096];	/* Yes, this limits the environment this test
+			   can run it but I honestly don't care about
+			   people which have this problem.  */
+  char *bufs[10];
+  size_t lens[10];
+  size_t sbs;
+  size_t len, i;
+
+  if (getcwd (thepath, sizeof thepath) == NULL)
+    {
+      if (errno == ERANGE)
+	/* The path is too long, skip all tests.  */
+	return 0;
+
+      puts ("getcwd (thepath, sizeof thepath) failed");
+      return 1;
+    }
+  len = strlen (thepath);
+
+  sbs = 1;
+  while (sbs < len + 1)
+    sbs <<= 1;
+
+  for (i = 0; i < 4; ++i)
+    {
+      lens[i] = sbs;
+      bufs[i] = (char *) malloc (sbs);
+    }
+
+  bufs[i] = getcwd (NULL, sbs);
+  lens[i] = sbs;
+  if (bufs[i] == NULL)
+    {
+      puts ("getcwd (NULL, sbs) failed");
+      return 1;
+    }
+  ++i;
+
+  for (; i < 10; sbs >>= 1, ++i)
+    {
+      bufs[i] = (char *) malloc (MAX (1, sbs));
+      lens[i] = sbs;
+    }
+
+  /* Before we test the result write something in the memory to see
+     whether the allocation went right.  */
+  for (i = 0; i < 10; ++i)
+    if (i != 4 && bufs[i] != NULL)
+      memset (bufs[i], '\xff', lens[i]);
+
+  if (strcmp (thepath, bufs[4]) != 0)
+    {
+      printf ("\
+getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n",
+	      bufs[4], thepath);
+      return 1;
+    }
+
+  /* Now overwrite all buffers to see that getcwd allocated the buffer
+     of right size.  */
+  for (i = 0; i < 10; ++i)
+    memset (bufs[i], i, lens[i]);
+
+  for (i = 0; i < 10; ++i)
+    free (bufs[i]);
+
+  /* Test whether the function signals success despite the buffer
+     being too small.  */
+  if (getcwd (NULL, len) != NULL)
+    {
+      puts ("getcwd (NULL, len) didn't failed");
+      return 1;
+    }
+
+  bufs[0] = malloc (len);
+  bufs[1] = malloc (len);
+  bufs[2] = malloc (len);
+  if (bufs[1] != NULL)
+    {
+      if (getcwd (bufs[1], len) != NULL)
+	{
+	  puts ("getcwd (bufs[1], len) didn't failed");
+	  return 1;
+	}
+      free (bufs[0]);
+      free (bufs[1]);
+      free (bufs[2]);
+    }
+
+  memset (thepath, '\xfe', sizeof (thepath));
+  if (getcwd (thepath, len) != NULL)
+    {
+      puts ("getcwd (thepath, len) didn't failed");
+      return 1;
+    }
+
+  for (i = len; i < sizeof thepath; ++i)
+    if (thepath[i] != '\xfe')
+      {
+	puts ("thepath[i] != '\xfe'");
+	return 1;
+      }
+
+  /* Now test handling of correctly sized buffers.  */
+  bufs[0] = getcwd (NULL, len + 1);
+  if (bufs[0] == NULL)
+    {
+      puts ("getcwd (NULL, len + 1) failed");
+      return 1;
+    }
+  free (bufs[0]);
+
+  memset (thepath, '\xff', sizeof thepath);
+  if (getcwd (thepath, len + 1) == NULL)
+    {
+      puts ("getcwd (thepath, len + 1) failed");
+      return 1;
+    }
+
+  for (i = len + 1; i < sizeof thepath; ++i)
+    if (thepath[i] != '\xff')
+      {
+	printf ("thepath[%zd] != '\xff'\n", i);
+	return 1;
+      }
+
+  puts ("everything OK");
+
+  return 0;
+}
+
+#include "../test-skeleton.c"
diff --git a/REORG.TODO/io/tst-linkat.c b/REORG.TODO/io/tst-linkat.c
new file mode 100644
index 0000000000..97445b7954
--- /dev/null
+++ b/REORG.TODO/io/tst-linkat.c
@@ -0,0 +1,172 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-linkat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  close (fd);
+
+  if (linkat (dir_fd, "some-file", dir_fd, "another-file", 0) != 0)
+    {
+      puts ("symlinkat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      puts ("file changed after symlinkat");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "another-file", &st2, AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      puts ("2nd fstatat64 failed");
+      return 1;
+    }
+  if (S_ISLNK (st2.st_mode))
+    {
+      puts ("2nd fstatat64 shows file is a symlink");
+      return 1;
+    }
+  if (st1.st_dev != st2.st_dev
+      || st1.st_ino != st2.st_ino
+      || st1.st_size != st2.st_size)
+    {
+      puts ("stat results for linked file do not match");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0)
+    {
+      puts ("3rd fstatat64 failed");
+      return 1;
+    }
+  if (st1.st_dev != st2.st_dev
+      || st1.st_ino != st2.st_ino
+      || st1.st_size != st2.st_size)
+    {
+      puts ("stat results do not match");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "another-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("2nd unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-mkdirat.c b/REORG.TODO/io/tst-mkdirat.c
new file mode 100644
index 0000000000..a960c6651d
--- /dev/null
+++ b/REORG.TODO/io/tst-mkdirat.c
@@ -0,0 +1,164 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-mkdirat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Create a new directory.  */
+  int e = mkdirat (dir_fd, "some-dir", 0777);
+  if (e == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("directory creation failed");
+      return 1;
+    }
+
+  struct stat64 st1;
+  if (fstatat64 (dir_fd, "some-dir", &st1, 0) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+  if (!S_ISDIR (st1.st_mode))
+    {
+      puts ("mkdirat did not create a directory");
+      return 1;
+    }
+
+  dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("2nd fdopendir failed");
+      return 1;
+    }
+  bool has_some_dir = false;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, "some-dir") == 0)
+      {
+	has_some_dir = true;
+#ifdef _DIRENT_HAVE_D_TYPE
+	if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+	  {
+	    puts ("d_type for some-dir wrong");
+	    return 1;
+	  }
+#endif
+      }
+    else if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  if (!has_some_dir)
+    {
+      puts ("some-dir not in directory list");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-dir", AT_REMOVEDIR) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-mkfifoat.c b/REORG.TODO/io/tst-mkfifoat.c
new file mode 100644
index 0000000000..d87b587384
--- /dev/null
+++ b/REORG.TODO/io/tst-mkfifoat.c
@@ -0,0 +1,164 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-mkfifoat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Create a new directory.  */
+  int e = mkfifoat (dir_fd, "some-fifo", 0777);
+  if (e == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("fifo creation failed");
+      return 1;
+    }
+
+  struct stat64 st1;
+  if (fstatat64 (dir_fd, "some-fifo", &st1, 0) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+  if (!S_ISFIFO (st1.st_mode))
+    {
+      puts ("mkfifoat did not create FIFO");
+      return 1;
+    }
+
+  dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("2nd fdopendir failed");
+      return 1;
+    }
+  bool has_some_fifo = false;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, "some-fifo") == 0)
+      {
+	has_some_fifo = true;
+#ifdef _DIRENT_HAVE_D_TYPE
+	if (d->d_type != DT_UNKNOWN && d->d_type != DT_FIFO)
+	  {
+	    puts ("d_type for some-fifo wrong");
+	    return 1;
+	  }
+#endif
+      }
+    else if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  if (!has_some_fifo)
+    {
+      puts ("some-fifo not in directory list");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-fifo", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-mknodat.c b/REORG.TODO/io/tst-mknodat.c
new file mode 100644
index 0000000000..9d58fdbe3a
--- /dev/null
+++ b/REORG.TODO/io/tst-mknodat.c
@@ -0,0 +1,164 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-mknodat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Create a new fifo.  */
+  int e = mknodat (dir_fd, "some-fifo", 0777 | S_IFIFO, 0);
+  if (e == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("fifo creation failed");
+      return 1;
+    }
+
+  struct stat64 st1;
+  if (fstatat64 (dir_fd, "some-fifo", &st1, 0) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+  if (!S_ISFIFO (st1.st_mode))
+    {
+      puts ("mknodat did not create a fifo");
+      return 1;
+    }
+
+  dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("2nd fdopendir failed");
+      return 1;
+    }
+  bool has_some_fifo = false;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, "some-fifo") == 0)
+      {
+	has_some_fifo = true;
+#ifdef _DIRENT_HAVE_D_TYPE
+	if (d->d_type != DT_UNKNOWN && d->d_type != DT_FIFO)
+	  {
+	    puts ("d_type for some-fifo wrong");
+	    return 1;
+	  }
+#endif
+      }
+    else if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  if (!has_some_fifo)
+    {
+      puts ("some-fifo not in directory list");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "some-fifo", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-open-tmpfile.c b/REORG.TODO/io/tst-open-tmpfile.c
new file mode 100644
index 0000000000..485109706f
--- /dev/null
+++ b/REORG.TODO/io/tst-open-tmpfile.c
@@ -0,0 +1,318 @@
+/* Test open and openat with O_TMPFILE.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This test verifies that open and openat work as expected, i.e. they
+   create a deleted file with the requested file mode.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <support/support.h>
+
+#ifdef O_TMPFILE
+typedef int (*wrapper_func) (const char *, int, mode_t);
+
+/* Error-checking wrapper for the open function, compatible with the
+   wrapper_func type.  */
+static int
+wrap_open (const char *path, int flags, mode_t mode)
+{
+  int ret = open (path, flags, mode);
+  if (ret < 0)
+    {
+      printf ("error: open (\"%s\", 0x%x, 0%03o): %m\n", path, flags, mode);
+      exit (1);
+    }
+  return ret;
+}
+
+/* Error-checking wrapper for the openat function, compatible with the
+   wrapper_func type.  */
+static int
+wrap_openat (const char *path, int flags, mode_t mode)
+{
+  int ret = openat (AT_FDCWD, path, flags, mode);
+  if (ret < 0)
+    {
+      printf ("error: openat (\"%s\", 0x%x, 0%03o): %m\n", path, flags, mode);
+      exit (1);
+    }
+  return ret;
+}
+
+/* Error-checking wrapper for the open64 function, compatible with the
+   wrapper_func type.  */
+static int
+wrap_open64 (const char *path, int flags, mode_t mode)
+{
+  int ret = open64 (path, flags, mode);
+  if (ret < 0)
+    {
+      printf ("error: open64 (\"%s\", 0x%x, 0%03o): %m\n", path, flags, mode);
+      exit (1);
+    }
+  return ret;
+}
+
+/* Error-checking wrapper for the openat64 function, compatible with the
+   wrapper_func type.  */
+static int
+wrap_openat64 (const char *path, int flags, mode_t mode)
+{
+  int ret = openat64 (AT_FDCWD, path, flags, mode);
+  if (ret < 0)
+    {
+      printf ("error: openat64 (\"%s\", 0x%x, 0%03o): %m\n", path, flags, mode);
+      exit (1);
+    }
+  return ret;
+}
+
+/* Return true if FD is flagged as deleted in /proc/self/fd, false if
+   not.  */
+static bool
+is_file_deteted (int fd)
+{
+  char *proc_fd_path = xasprintf ("/proc/self/fd/%d", fd);
+  char file_path[4096];
+  ssize_t file_path_length
+    = readlink (proc_fd_path, file_path, sizeof (file_path));
+  if (file_path_length < 0)
+    {
+      printf ("error: readlink (\"%s\"): %m", proc_fd_path);
+      free (proc_fd_path);
+      exit (1);
+    }
+  free (proc_fd_path);
+  if (file_path_length == sizeof (file_path))
+    {
+      printf ("error: path in /proc resolves to overlong file name: %.*s\n",
+              (int) file_path_length, file_path);
+      exit (1);
+    }
+  const char *deleted = " (deleted)";
+  if (file_path_length < strlen (deleted))
+    {
+      printf ("error: path in /proc is too short: %.*s\n",
+              (int) file_path_length, file_path);
+      exit (1);
+    }
+  return memcmp (file_path + file_path_length - strlen (deleted),
+              deleted, strlen (deleted)) == 0;
+}
+
+/* Obtain a file name which is difficult to guess.  */
+static char *
+get_random_name (void)
+{
+  unsigned long long bytes[2];
+  int random_device = open ("/dev/urandom", O_RDONLY);
+  if (random_device < 0)
+    {
+      printf ("error: open (\"/dev/urandom\"): %m\n");
+      exit (1);
+    }
+  ssize_t ret = read (random_device, bytes, sizeof (bytes));
+  if (ret < 0)
+    {
+      printf ("error: read (\"/dev/urandom\"): %m\n");
+      exit (1);
+    }
+  if (ret != sizeof (bytes))
+    {
+      printf ("error: short read from /dev/urandom: %zd\n", ret);
+      exit (1);
+    }
+  close (random_device);
+  return xasprintf ("tst-open-tmpfile-%08llx%08llx.tmp", bytes[0], bytes[1]);
+}
+
+/* Check open/openat (as specified by OP and WRAPPER) with a specific
+   PATH/FLAGS/MODE combination.  */
+static void
+check_wrapper_flags_mode (const char *op, wrapper_func wrapper,
+                          const char *path, int flags, mode_t mode)
+{
+  int fd = wrapper (path, flags | O_TMPFILE, mode);
+  struct stat64 st;
+  if (fstat64 (fd, &st) != 0)
+    {
+      printf ("error: fstat64: %m\n");
+      exit (1);
+    }
+
+  /* Verify that the mode was correctly processed.  */
+  int actual_mode = st.st_mode & 0777;
+  if (actual_mode != mode)
+    {
+      printf ("error: unexpected mode; expected 0%03o, actual 0%03o\n",
+              mode, actual_mode);
+      exit (1);
+    }
+
+  /* Check that the file is marked as deleted in /proc.  */
+  if (!is_file_deteted (fd))
+    {
+      printf ("error: path in /proc is not marked as deleted\n");
+      exit (1);
+    }
+
+  /* Check that the file can be turned into a regular file with
+     linkat.  Open a file descriptor for the directory at PATH.  Use
+     AT_FDCWD if PATH is ".", to exercise that functionality as
+     well.  */
+  int path_fd;
+  if (strcmp (path, ".") == 0)
+    path_fd = AT_FDCWD;
+  else
+    {
+      path_fd = open (path, O_RDONLY | O_DIRECTORY);
+      if (path_fd < 0)
+        {
+          printf ("error: open (\"%s\"): %m\n", path);
+          exit (1);
+        }
+    }
+
+  /* Use a hard-to-guess name for the new directory entry.  */
+  char *new_name = get_random_name ();
+
+  /* linkat does not require privileges if the path in /proc/self/fd
+     is used.  */
+  char *proc_fd_path = xasprintf ("/proc/self/fd/%d", fd);
+  if (linkat (AT_FDCWD, proc_fd_path, path_fd, new_name,
+              AT_SYMLINK_FOLLOW) == 0)
+    {
+      if (unlinkat (path_fd, new_name, 0) != 0 && errno != ENOENT)
+        {
+          printf ("error: unlinkat (\"%s/%s\"): %m\n", path, new_name);
+          exit (1);
+        }
+    }
+  else
+    {
+      /* linkat failed.  This is expected if O_EXCL was specified.  */
+      if ((flags & O_EXCL) == 0)
+        {
+          printf ("error: linkat failed after %s (\"%s\", 0x%x, 0%03o): %m\n",
+                  op, path, flags, mode);
+          exit (1);
+        }
+    }
+
+  free (proc_fd_path);
+  free (new_name);
+  if (path_fd != AT_FDCWD)
+    close (path_fd);
+  close (fd);
+}
+
+/* Check OP/WRAPPER with various flags at a specific PATH and
+   MODE.  */
+static void
+check_wrapper_mode (const char *op, wrapper_func wrapper,
+                    const char *path, mode_t mode)
+{
+  check_wrapper_flags_mode (op, wrapper, path, O_WRONLY, mode);
+  check_wrapper_flags_mode (op, wrapper, path, O_WRONLY | O_EXCL, mode);
+  check_wrapper_flags_mode (op, wrapper, path, O_RDWR, mode);
+  check_wrapper_flags_mode (op, wrapper, path, O_RDWR | O_EXCL, mode);
+}
+
+/* Check open/openat with varying permissions.  */
+static void
+check_wrapper (const char *op, wrapper_func wrapper,
+                    const char *path)
+{
+  printf ("info: testing %s at: %s\n", op, path);
+  check_wrapper_mode (op, wrapper, path, 0);
+  check_wrapper_mode (op, wrapper, path, 0640);
+  check_wrapper_mode (op, wrapper, path, 0600);
+  check_wrapper_mode (op, wrapper, path, 0755);
+  check_wrapper_mode (op, wrapper, path, 0750);
+}
+
+/* Verify that the directory at PATH supports O_TMPFILE.  Exit with
+   status 77 (unsupported) if the kernel does not support O_TMPFILE.
+   Even with kernel support, not all file systems O_TMPFILE, so return
+   true if the directory supports O_TMPFILE, false if not.  */
+static bool
+probe_path (const char *path)
+{
+  int fd = openat (AT_FDCWD, path, O_TMPFILE | O_RDWR, 0);
+  if (fd < 0)
+    {
+      if (errno == EISDIR)
+        /* The system does not support O_TMPFILE.  */
+        {
+          printf ("info: kernel does not support O_TMPFILE\n");
+          exit (77);
+        }
+      if (errno == EOPNOTSUPP)
+        {
+          printf ("info: path does not support O_TMPFILE: %s\n", path);
+          return false;
+        }
+      printf ("error: openat (\"%s\", O_TMPFILE | O_RDWR): %m\n", path);
+      exit (1);
+    }
+  close (fd);
+  return true;
+}
+
+static int
+do_test (void)
+{
+  umask (0);
+  const char *paths[] = { ".", "/dev/shm", "/tmp",
+                          getenv ("TEST_TMPFILE_PATH"),
+                          NULL };
+  bool supported = false;
+  for (int i = 0; paths[i] != NULL; ++i)
+    if (probe_path (paths[i]))
+      {
+        supported = true;
+        check_wrapper ("open", wrap_open, paths[i]);
+        check_wrapper ("openat", wrap_openat, paths[i]);
+        check_wrapper ("open64", wrap_open64, paths[i]);
+        check_wrapper ("openat64", wrap_openat64, paths[i]);
+      }
+
+  if (!supported)
+    return 77;
+
+  return 0;
+}
+
+#else  /* !O_TMPFILE */
+
+static int
+do_test (void)
+{
+  return 77;
+}
+
+#endif  /* O_TMPFILE */
+
+#include <support/test-driver.c>
diff --git a/REORG.TODO/io/tst-openat.c b/REORG.TODO/io/tst-openat.c
new file mode 100644
index 0000000000..741b8d0ad2
--- /dev/null
+++ b/REORG.TODO/io/tst-openat.c
@@ -0,0 +1,210 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-openat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+
+  /* Before closing the file, try using this file descriptor to open
+     another file.  This must fail.  */
+  int fd2 = openat (fd, "should-not-work", O_CREAT|O_RDWR, 0666);
+  if (fd2 != -1)
+    {
+      puts ("openat using descriptor for normal file worked");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("error for openat using descriptor for normal file not ENOTDIR ");
+      return 1;
+    }
+
+  close (fd);
+  puts ("file created");
+
+  /* fdopendir takes over the descriptor, make a copy.  */
+  dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("2nd lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  bool seen_file = false;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	if (strcmp (d->d_name, "some-file") != 0)
+	  {
+	    printf ("temp directory contains file \"%s\"\n", d->d_name);
+	    return 1;
+	  }
+
+	seen_file = true;
+      }
+  closedir (dir);
+
+  if (!seen_file)
+    {
+      puts ("file not created in correct directory");
+      return 1;
+    }
+
+  int cwdfd = open (".", O_RDONLY | O_DIRECTORY);
+  if (cwdfd == -1)
+    {
+      puts ("cannot get descriptor for cwd");
+      return 1;
+    }
+
+  if (fchdir (dir_fd) != 0)
+    {
+      puts ("1st fchdir failed");
+      return 1;
+    }
+
+  if (unlink ("some-file") != 0)
+    {
+      puts ("unlink failed");
+      return 1;
+    }
+
+  if (fchdir (cwdfd) != 0)
+    {
+      puts ("2nd fchdir failed");
+      return 1;
+    }
+
+  close (dir_fd);
+  close (cwdfd);
+
+  /* With the file descriptor closed the next call must fail.  */
+  fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd != -1)
+    {
+      puts ("openat using closed descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("openat using closed descriptor did not set EBADF");
+      return 1;
+    }
+
+  fd = openat (-1, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd != -1)
+    {
+      puts ("openat using -1 descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("openat using -1 descriptor did not set EBADF");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-posix_fallocate-common.c b/REORG.TODO/io/tst-posix_fallocate-common.c
new file mode 100644
index 0000000000..d5a302aa9c
--- /dev/null
+++ b/REORG.TODO/io/tst-posix_fallocate-common.c
@@ -0,0 +1,85 @@
+/* Common posix_fallocate tests definitions.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <support/support.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+
+static char *temp_filename;
+static int temp_fd;
+
+static void
+do_prepare (int argc, char **argv)
+{
+  temp_fd = create_temp_file ("tst-posix_fallocate.", &temp_filename);
+  if (temp_fd == -1)
+    FAIL_EXIT1 ("cannot create temporary file: %m\n");
+}
+#define PREPARE do_prepare
+
+static int
+do_test_with_offset (off_t offset)
+{
+  struct stat st;
+
+  if (posix_fallocate (temp_fd, offset, 768) != 0)
+    FAIL_EXIT1 ("1st posix_fallocate call failed");
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("2nd fstat failed");
+
+  if (st.st_size != (offset + 768))
+    FAIL_EXIT1 ("file size after first posix_fallocate call is %lu, "
+		"expected %lu",
+		(unsigned long int) st.st_size, 512lu + 768lu);
+
+  if (posix_fallocate (temp_fd, 0, 1024) != 0)
+    FAIL_EXIT1 ("2nd posix_fallocate call failed");
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("3rd fstat failed");
+
+  if (st.st_size != (offset) + 768)
+    FAIL_EXIT1 ("file size changed in second posix_fallocate");
+
+  offset += 2048;
+  if (posix_fallocate (temp_fd, offset, 64) != 0)
+    FAIL_EXIT1 ("3rd posix_fallocate call failed");
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("4th fstat failed");
+
+  if (st.st_size != (offset + 64))
+    FAIL_EXIT1 ("file size after first posix_fallocate call is %llu, "
+		"expected %u",
+		(unsigned long long int) st.st_size, 2048u + 64u);
+
+  return 0;
+}
+
+/* This function is defined by the individual tests.  */
+static int do_test (void);
+
+#include <support/test-driver.c>
diff --git a/REORG.TODO/io/tst-posix_fallocate.c b/REORG.TODO/io/tst-posix_fallocate.c
new file mode 100644
index 0000000000..b695d17afa
--- /dev/null
+++ b/REORG.TODO/io/tst-posix_fallocate.c
@@ -0,0 +1,33 @@
+/* Basic posix_fallocate tests.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "tst-posix_fallocate-common.c"
+
+static int
+do_test (void)
+{
+  struct stat st;
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("1st fstat failed");
+
+  if (st.st_size != 0)
+    FAIL_EXIT1 ("file not created with size 0");
+
+  return do_test_with_offset (512);
+}
diff --git a/REORG.TODO/io/tst-posix_fallocate64.c b/REORG.TODO/io/tst-posix_fallocate64.c
new file mode 100644
index 0000000000..3b380d7bcb
--- /dev/null
+++ b/REORG.TODO/io/tst-posix_fallocate64.c
@@ -0,0 +1,44 @@
+/* Basic posix_fallocate tests (with _FILE_OFFSET_BITS).
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define _FILE_OFFSET_BITS 64
+#include "tst-posix_fallocate-common.c"
+
+static int
+do_test (void)
+{
+  struct stat st;
+  int ret;
+
+  if (fstat (temp_fd, &st) != 0)
+    FAIL_EXIT1 ("1st fstat failed");
+
+  if (st.st_size != 0)
+    FAIL_EXIT1 ("file not created with size 0");
+
+  ret = do_test_with_offset (512);
+  if (ret == 1)
+    return 1;
+
+  off_t base_offset = UINT32_MAX + 512LL;
+  ret = do_test_with_offset (base_offset);
+  if (ret == 1)
+    return 1;
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-readlinkat.c b/REORG.TODO/io/tst-readlinkat.c
new file mode 100644
index 0000000000..51fafc92d3
--- /dev/null
+++ b/REORG.TODO/io/tst-readlinkat.c
@@ -0,0 +1,137 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-symlinkat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  static const char symlinkcontent[] = "some-file";
+  if (symlinkat (symlinkcontent, dir_fd, "another-file") != 0)
+    {
+      puts ("symlinkat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "another-file", &st2, AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+  if (!S_ISLNK (st2.st_mode))
+    {
+      puts ("2nd fstatat64 does not show file is a symlink");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, symlinkcontent, &st2, AT_SYMLINK_NOFOLLOW) == 0)
+    {
+      puts ("2nd fstatat64 succeeded");
+      return 1;
+    }
+
+  char buf[100];
+  int n = readlinkat (dir_fd, "another-file", buf, sizeof (buf));
+  if (n == -1)
+    {
+      puts ("readlinkat failed");
+      return 1;
+    }
+  if (n != sizeof (symlinkcontent) - 1)
+    {
+      printf ("readlinkat returned %d, expected %zu\n",
+	      n, sizeof (symlinkcontent) - 1);
+      return 1;
+    }
+  if (strncmp (buf, symlinkcontent, n) != 0)
+    {
+      puts ("readlinkat retrieved wrong link content");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "another-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-renameat.c b/REORG.TODO/io/tst-renameat.c
new file mode 100644
index 0000000000..435302b52b
--- /dev/null
+++ b/REORG.TODO/io/tst-renameat.c
@@ -0,0 +1,226 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-renameat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  /* Using a descriptor for a normal file must fail.  */
+  if (renameat (fd, "some-file", dir_fd, "another-file") == 0)
+    {
+      puts ("renameat with normal file descriptor succeeded");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("error for renameat with normal file descriptor not ENOTDIR");
+      return 1;
+    }
+
+  if (renameat (dir_fd, "some-file", fd, "another-file") == 0)
+    {
+      puts ("2nd renameat with normal file descriptor succeeded");
+      return 1;
+    }
+  if (errno != ENOTDIR)
+    {
+      puts ("error for 2nd renameat with normal file descriptor not ENOTDIR");
+      return 1;
+    }
+
+  close (fd);
+
+  if (renameat (dir_fd, "some-file", dir_fd, "another-file") != 0)
+    {
+      puts ("renameat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) == 0)
+    {
+      puts ("fstatat64 succeeded");
+      return 1;
+    }
+  if (errno != ENOENT)
+    {
+      puts ("fstatat64 did not fail with ENOENT");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0)
+    {
+      puts ("2nd fstatat64 failed");
+      return 1;
+    }
+
+  if (st1.st_dev != st2.st_dev
+      || st1.st_ino != st2.st_ino
+      || st1.st_size != st2.st_size)
+    {
+      puts ("stat results do not match");
+      return 1;
+    }
+
+  /* Create a file descriptor which is closed again right away.  */
+  int dir_fd2 = dup (dir_fd);
+  if (dir_fd2 == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  close (dir_fd2);
+
+  if (renameat (dir_fd2, "another-file", dir_fd, "some-file") == 0)
+    {
+      puts ("renameat with closed file descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for renameat with closed file descriptor not EBADF");
+      return 1;
+    }
+
+  if (renameat (dir_fd, "another-file", dir_fd2, "some-file") == 0)
+    {
+      puts ("2nd renameat with closed file descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for 2nd renameat with closed file descriptor not EBADF");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "another-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  if (renameat (-1, "another-file", dir_fd, "some-file") == 0)
+    {
+      puts ("renameat with invalid file descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for renameat with invalid file descriptor not EBADF");
+      return 1;
+    }
+
+  if (renameat (dir_fd, "another-file", -1, "some-file") == 0)
+    {
+      puts ("2nd renameat with invalid file descriptor succeeded");
+      return 1;
+    }
+  if (errno != EBADF)
+    {
+      puts ("error for 2nd renameat with invalid file descriptor not EBADF");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-statvfs.c b/REORG.TODO/io/tst-statvfs.c
new file mode 100644
index 0000000000..227c62d7da
--- /dev/null
+++ b/REORG.TODO/io/tst-statvfs.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <sys/statvfs.h>
+
+
+/* This test cannot detect many errors.  But it will fail if the
+   statvfs is completely hosed and it'll detect a missing export.  So
+   it is better than nothing.  */
+static int
+do_test (int argc, char *argv[])
+{
+  for (int i = 1; i < argc; ++i)
+    {
+      struct statvfs st;
+      if (statvfs (argv[i], &st) != 0)
+        printf ("%s: failed (%m)\n", argv[i]);
+      else
+        printf ("%s: free: %llu, mandatory: %s\n", argv[i],
+                (unsigned long long int) st.f_bfree,
+#ifdef ST_MANDLOCK
+                (st.f_flag & ST_MANDLOCK) ? "yes" : "no"
+#else
+                "no"
+#endif
+                );
+    }
+  return 0;
+}
+
+#define TEST_FUNCTION do_test (argc, argv)
+#include "../test-skeleton.c"
diff --git a/REORG.TODO/io/tst-symlinkat.c b/REORG.TODO/io/tst-symlinkat.c
new file mode 100644
index 0000000000..214a8e348e
--- /dev/null
+++ b/REORG.TODO/io/tst-symlinkat.c
@@ -0,0 +1,165 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-symlinkat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  puts ("file created");
+
+  struct stat64 st1;
+  if (fstat64 (fd, &st1) != 0)
+    {
+      puts ("fstat64 failed");
+      return 1;
+    }
+
+  close (fd);
+
+  if (symlinkat ("some-file", dir_fd, "another-file") != 0)
+    {
+      puts ("symlinkat failed");
+      return 1;
+    }
+
+  struct stat64 st2;
+  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+    {
+      puts ("fstatat64 failed");
+      return 1;
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      puts ("file changed after symlinkat");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "another-file", &st2, AT_SYMLINK_NOFOLLOW) != 0)
+    {
+      puts ("2nd fstatat64 failed");
+      return 1;
+    }
+  if (!S_ISLNK (st2.st_mode))
+    {
+      puts ("2nd fstatat64 does not show file is a symlink");
+      return 1;
+    }
+
+  if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0)
+    {
+      puts ("3rd fstatat64 failed");
+      return 1;
+    }
+  if (st1.st_dev != st2.st_dev
+      || st1.st_ino != st2.st_ino
+      || st1.st_size != st2.st_size)
+    {
+      puts ("stat results do not match");
+      return 1;
+    }
+
+  if (unlinkat (dir_fd, "another-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("2nd unlinkat failed");
+      return 1;
+    }
+
+  close (dir_fd);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/tst-ttyname_r.c b/REORG.TODO/io/tst-ttyname_r.c
new file mode 100644
index 0000000000..8e2f30c972
--- /dev/null
+++ b/REORG.TODO/io/tst-ttyname_r.c
@@ -0,0 +1,42 @@
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static void do_prepare (void);
+#define PREPARE(argc, argv) do_prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include <test-skeleton.c>
+
+static int temp_fd;
+
+static void
+do_prepare (void)
+{
+  char *temp_file;
+  temp_fd = create_temp_file ("tst-ttyname_r.", &temp_file);
+  if (temp_fd == -1)
+    error (1, errno, "cannot create temporary file");
+}
+
+static int
+do_test (void)
+{
+  int ret = 0;
+  char buf[sysconf (_SC_TTY_NAME_MAX) + 1];
+  int res = ttyname_r (-1, buf, sizeof (buf));
+  if (res != EBADF)
+    {
+      printf ("1st ttyname_r returned with res %d\n", res);
+      ret++;
+    }
+  res = ttyname_r (temp_fd, buf, sizeof (buf));
+  if (res != ENOTTY)
+    {
+      printf ("2nd ttyname_r returned with res %d\n", res);
+      ret++;
+    }
+  return ret;
+}
diff --git a/REORG.TODO/io/tst-unlinkat.c b/REORG.TODO/io/tst-unlinkat.c
new file mode 100644
index 0000000000..e21d56f9f7
--- /dev/null
+++ b/REORG.TODO/io/tst-unlinkat.c
@@ -0,0 +1,179 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+  size_t test_dir_len = strlen (test_dir);
+  static const char dir_name[] = "/tst-unlinkat.XXXXXX";
+
+  size_t dirbuflen = test_dir_len + sizeof (dir_name);
+  char *dirbuf = malloc (dirbuflen);
+  if (dirbuf == NULL)
+    {
+      puts ("out of memory");
+      exit (1);
+    }
+
+  snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+  if (mkdtemp (dirbuf) == NULL)
+    {
+      puts ("cannot create temporary directory");
+      exit (1);
+    }
+
+  add_temp_file (dirbuf);
+
+  dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+  if (dir_fd == -1)
+    {
+      puts ("cannot open directory");
+      exit (1);
+    }
+}
+
+
+static int
+do_test (void)
+{
+  /* fdopendir takes over the descriptor, make a copy.  */
+  int dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("1st lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  DIR *dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("fdopendir failed");
+      return 1;
+    }
+  struct dirent64 *d;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	printf ("temp directory contains file \"%s\"\n", d->d_name);
+	return 1;
+      }
+  closedir (dir);
+
+  /* Try to create a file.  */
+  int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
+  if (fd == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("*at functions not supported");
+	  return 0;
+	}
+
+      puts ("file creation failed");
+      return 1;
+    }
+  write (fd, "hello", 5);
+  close (fd);
+  puts ("file created");
+
+  /* fdopendir takes over the descriptor, make a copy.  */
+  dupfd = dup (dir_fd);
+  if (dupfd == -1)
+    {
+      puts ("2nd dup failed");
+      return 1;
+    }
+  if (lseek (dupfd, 0, SEEK_SET) != 0)
+    {
+      puts ("2nd lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  dir = fdopendir (dupfd);
+  if (dir == NULL)
+    {
+      puts ("2nd fdopendir failed");
+      return 1;
+    }
+  bool seen_file = false;
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	if (strcmp (d->d_name, "some-file") != 0)
+	  {
+	    printf ("temp directory contains file \"%s\"\n", d->d_name);
+	    return 1;
+	  }
+
+	seen_file = true;
+      }
+  closedir (dir);
+
+  if (!seen_file)
+    {
+      puts ("file not created in correct directory");
+      return 1;
+    }
+
+  /* Remove the file now.  */
+  if (unlinkat (dir_fd, "some-file", 0) != 0)
+    {
+      puts ("unlinkat failed");
+      return 1;
+    }
+
+  /* We won't need dir_fd anymore after this, so use it.  */
+  if (lseek (dir_fd, 0, SEEK_SET) != 0)
+    {
+      puts ("3rd lseek failed");
+      return 1;
+    }
+
+  /* The directory should be empty safe the . and .. files.  */
+  dir = fdopendir (dir_fd);
+  if (dir == NULL)
+    {
+      puts ("3rd fdopendir failed");
+      return 1;
+    }
+  while ((d = readdir64 (dir)) != NULL)
+    if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+      {
+	if (strcmp (d->d_name, "some-file") == 0)
+	  {
+	    puts ("some-file not removed");
+	    return 1;
+	  }
+	else
+	  {
+	    printf ("temp directory contains file \"%s\"\n", d->d_name);
+	    return 1;
+	  }
+      }
+  closedir (dir);
+
+  return 0;
+}
diff --git a/REORG.TODO/io/ttyname.c b/REORG.TODO/io/ttyname.c
new file mode 100644
index 0000000000..dc4f11890f
--- /dev/null
+++ b/REORG.TODO/io/ttyname.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+char *__ttyname = NULL;
+
+/* Return the pathname of the terminal FD is open on, or NULL on errors.
+   The returned storage is good only until the next call to this function.  */
+char *
+ttyname (int fd)
+{
+  __set_errno (ENOSYS);
+  return NULL;
+}
+
+
+stub_warning (ttyname)
diff --git a/REORG.TODO/io/ttyname_r.c b/REORG.TODO/io/ttyname_r.c
new file mode 100644
index 0000000000..a5f5311b09
--- /dev/null
+++ b/REORG.TODO/io/ttyname_r.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+
+/* Store at most BUFLEN characters the pathname of the terminal FD is
+   open on in BUF.  Return 0 on success,  otherwise an error number.  */
+int
+__ttyname_r (int fd, char *buf, size_t buflen)
+{
+  __set_errno (ENOSYS);
+  return ENOSYS;
+}
+weak_alias (__ttyname_r, ttyname_r)
+
+stub_warning (ttyname_r)
diff --git a/REORG.TODO/io/umask.c b/REORG.TODO/io/umask.c
new file mode 100644
index 0000000000..d40e06c3f2
--- /dev/null
+++ b/REORG.TODO/io/umask.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <sys/types.h>
+
+/* Set the file creation mask to MASK, returning the old mask.  */
+mode_t
+__umask (mode_t mask)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (umask)
+
+weak_alias (__umask, umask)
diff --git a/REORG.TODO/io/unlink.c b/REORG.TODO/io/unlink.c
new file mode 100644
index 0000000000..54f2c9c77f
--- /dev/null
+++ b/REORG.TODO/io/unlink.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Remove the link named NAME.  */
+int
+__unlink (const char *name)
+{
+  if (name == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (unlink)
+
+weak_alias (__unlink, unlink)
diff --git a/REORG.TODO/io/unlinkat.c b/REORG.TODO/io/unlinkat.c
new file mode 100644
index 0000000000..aeed80edd4
--- /dev/null
+++ b/REORG.TODO/io/unlinkat.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Remove the link named NAME.  */
+int
+unlinkat (int fd, const char *name, int flag)
+{
+  if (name == NULL || (flag & AT_REMOVEDIR) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd < 0 && fd != AT_FDCWD)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (unlinkat)
diff --git a/REORG.TODO/io/utime.c b/REORG.TODO/io/utime.c
new file mode 100644
index 0000000000..242ccd120a
--- /dev/null
+++ b/REORG.TODO/io/utime.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <utime.h>
+
+
+/* Set the access and modification times of FILE to those given in TIMES.
+   If TIMES is NULL, set them to the current time.  */
+int
+utime (const char *file, const struct utimbuf *times)
+{
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (utime)
+
+stub_warning (utime)
diff --git a/REORG.TODO/io/utime.h b/REORG.TODO/io/utime.h
new file mode 100644
index 0000000000..44a4e9cddd
--- /dev/null
+++ b/REORG.TODO/io/utime.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	POSIX Standard: 5.6.6 Set File Access and Modification Times  <utime.h>
+ */
+
+#ifndef	_UTIME_H
+#define	_UTIME_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+#include <bits/types.h>
+
+#if defined __USE_XOPEN || defined __USE_XOPEN2K
+# include <bits/types/time_t.h>
+#endif
+
+/* Structure describing file times.  */
+struct utimbuf
+  {
+    __time_t actime;		/* Access time.  */
+    __time_t modtime;		/* Modification time.  */
+  };
+
+/* Set the access and modification times of FILE to those given in
+   *FILE_TIMES.  If FILE_TIMES is NULL, set them to the current time.  */
+extern int utime (const char *__file,
+		  const struct utimbuf *__file_times)
+     __THROW __nonnull ((1));
+
+__END_DECLS
+
+#endif /* utime.h */
diff --git a/REORG.TODO/io/utimensat.c b/REORG.TODO/io/utimensat.c
new file mode 100644
index 0000000000..f45eb73b93
--- /dev/null
+++ b/REORG.TODO/io/utimensat.c
@@ -0,0 +1,32 @@
+/* Change access and modification times of open file.  Stub version.
+   Copyright (C) 2007-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+
+
+/* Change the access time of FILE to TSP[0] and
+   the modification time of FILE to TSP[1].  */
+int
+utimensat (int fd, const char *file, const struct timespec tsp[2],
+	   int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (utimensat)
diff --git a/REORG.TODO/io/write.c b/REORG.TODO/io/write.c
new file mode 100644
index 0000000000..cb413c76f9
--- /dev/null
+++ b/REORG.TODO/io/write.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+/* Write NBYTES of BUF to FD.  Return the number written, or -1.  */
+ssize_t
+__libc_write (int fd, const void *buf, size_t nbytes)
+{
+  if (nbytes == 0)
+    return 0;
+  if (fd < 0)
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+  if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__libc_write)
+stub_warning (write)
+
+weak_alias (__libc_write, __write)
+libc_hidden_weak (__write)
+weak_alias (__libc_write, write)
diff --git a/REORG.TODO/io/xmknod.c b/REORG.TODO/io/xmknod.c
new file mode 100644
index 0000000000..1daade187f
--- /dev/null
+++ b/REORG.TODO/io/xmknod.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Create a device file named PATH, with permission and special bits MODE
+   and device number DEV (which can be constructed from major and minor
+   device numbers with the `makedev' macro above).  */
+int
+__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
+{
+  if (vers != _MKNOD_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (__xmknod)
+
+weak_alias (__xmknod, _xmknod)
+libc_hidden_def (__xmknod)
diff --git a/REORG.TODO/io/xmknodat.c b/REORG.TODO/io/xmknodat.c
new file mode 100644
index 0000000000..060c0ef074
--- /dev/null
+++ b/REORG.TODO/io/xmknodat.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Create a device file named PATH relative to FD, with permission and
+   special bits MODE and device number DEV (which can be constructed
+   from major and minor device numbers with the `makedev' macro
+   above).  */
+int
+__xmknodat (int vers, int fd, const char *path, mode_t mode, dev_t *dev)
+{
+  if (vers != _MKNOD_VER)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && path[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (__xmknodat)
+
+libc_hidden_def (__xmknodat)
diff --git a/REORG.TODO/io/xstat.c b/REORG.TODO/io/xstat.c
new file mode 100644
index 0000000000..5a4de7cd76
--- /dev/null
+++ b/REORG.TODO/io/xstat.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+/* Get file information about FILE in BUF.  */
+int
+__xstat (int vers, const char *file, struct stat *buf)
+{
+  if (vers != _STAT_VER || file == NULL || buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+hidden_def (__xstat)
+stub_warning (stat)
+weak_alias (__xstat, _xstat)
diff --git a/REORG.TODO/io/xstat64.c b/REORG.TODO/io/xstat64.c
new file mode 100644
index 0000000000..12b9549f74
--- /dev/null
+++ b/REORG.TODO/io/xstat64.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+/* Get file information about FILE in BUF.  */
+int
+__xstat64 (int vers, const char *file, struct stat64 *buf)
+{
+  if (vers != _STAT_VER || file == NULL || buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+hidden_def (__xstat64)
+stub_warning (stat64)