Consolidate Linux open implementation

This patch consolidates the open Linux syscall implementation on
sysdeps/unix/sysv/linux/open{64}.c.  The changes are:

  1. Remove open{64} from auto-generation syscalls.list.
  2. Add a new open{64}.c implementation.  For architectures that
     define __OFF_T_MATCHES_OFF64_T the default open64 will create
     alias to required open symbols.
  3. Use __NR_openat as default syscall for open{64}.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/generic/open.c: Remove file.
	* sysdeps/unix/sysv/linux/generic/open64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/open64.c: Likewise.
	* sysdeps/unix/sysv/linux/open.c: New file.
	* sysdeps/unix/sysv/linux/open64.c (__libc_open64): Use O_LARGEFILE
	only for __OFF_T_MATCHES_OFF64_T and add alias to open if the case.
	* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Remove open
	from auto-generated list.

2 files changed, 0 insertions, 106 deletions

diff --git a/sysdeps/unix/sysv/linux/generic/open.c b/sysdeps/unix/sysv/linux/generic/open.c
deleted file mode 100644
index 10cdbe0b82..0000000000
--- a/sysdeps/unix/sysv/linux/generic/open.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 <stdio.h>
-#include <sysdep-cancel.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 = 0;
-
-  if (__OPEN_NEEDS_MODE (oflag))
-    {
-      va_list arg;
-      va_start (arg, oflag);
-      mode = va_arg (arg, int);
-      va_end (arg);
-    }
-
-  return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag, mode);
-}
-libc_hidden_def (__libc_open)
-
-weak_alias (__libc_open, __open)
-libc_hidden_weak (__open)
-weak_alias (__libc_open, open)
-
-int
-__open_nocancel (const char *file, int oflag, ...)
-{
-  int mode = 0;
-
-  if (__OPEN_NEEDS_MODE (oflag))
-    {
-      va_list arg;
-      va_start (arg, oflag);
-      mode = va_arg (arg, int);
-      va_end (arg);
-    }
-
-  return INLINE_SYSCALL (openat, 4, AT_FDCWD, file, oflag, mode);
-}
diff --git a/sysdeps/unix/sysv/linux/generic/open64.c b/sysdeps/unix/sysv/linux/generic/open64.c
deleted file mode 100644
index 88312a117c..0000000000
--- a/sysdeps/unix/sysv/linux/generic/open64.c
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 <stdio.h>
-#include <sysdep-cancel.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 = 0;
-
-  if (__OPEN_NEEDS_MODE (oflag))
-    {
-      va_list arg;
-      va_start (arg, oflag);
-      mode = va_arg (arg, int);
-      va_end (arg);
-    }
-
-  return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | O_LARGEFILE, mode);
-}
-weak_alias (__libc_open64, __open64)
-libc_hidden_weak (__open64)
-weak_alias (__libc_open64, open64)