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authorUlrich Drepper <drepper@redhat.com>2000-04-14 07:51:02 +0000
committerUlrich Drepper <drepper@redhat.com>2000-04-14 07:51:02 +0000
commitbb8e0116cd59b11053154fb4adbad9f06a344147 (patch)
tree97c55ce5db305776761fb56145f0f3d59cc2afa6 /sysdeps/posix
parent8f6f7a31c9aea07b4f364fe1ba33fa099169a007 (diff)
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2000-04-14 Ulrich Drepper <drepper@redhat.com> * include/sys/statfs.h: Add prototypes for __statfs64 and __fstatfs64. * sysdeps/generic/fstatfs64.c (__fstatfs64): Renamed to fstatfs64. Make old name weak alias. * sysdeps/unix/sysv/linux/fstatfs64.c: Likewise. * sysdeps/generic/statfs64.c (__statfs64): Renamed to statfs64. Make old name weak alias. * sysdeps/unix/sysv/linux/statfs64.c: Likewise. * io/Makefile (routines): Add posix_fadvise, posix_fadvise64, posix_fallocate, and posix_fallocate64. * io/Versions [libc] (GLIBC_2.2): Add posix_fadvise, posix_fadvise64, posix_fallocate, and posix_fallocate64. * io/fcntl.h: Declare posix_fadvise, posix_fadvise64, posix_fallocate, and posix_fallocate64. * sysdeps/generic/fadvise.c: New file. * sysdeps/generic/fadvise64.c: New file. * sysdeps/generic/fallocate.c: New file. * sysdeps/generic/fallocate64.c: New file. * sysdeps/posix/fallocate.c: New file. * sysdeps/posix/fallocate64.c: New file. * sysdeps/generic/bits/fcntl.h: Define POSIX_FADV_NORMAL, POSIX_FADV_RANDOM, POSIX_FADV_SEQUENTIAL, POSIX_FADV_WILLNEED, POSIX_FADV_DONTNEED, and POSIX_FADV_NOREUSE. * sysdeps/mach/hurd/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/i386/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/fcntl.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/fcntl.h: Likewise. * sysdeps/generic/madvise.c (__madvise): Renamed to posix_madvise. * sysdeps/unix/sysv/linux/syscalls.list: Likewise.
Diffstat (limited to 'sysdeps/posix')
-rw-r--r--sysdeps/posix/posix_fallocate.c71
-rw-r--r--sysdeps/posix/posix_fallocate64.c71
2 files changed, 142 insertions, 0 deletions
diff --git a/sysdeps/posix/posix_fallocate.c b/sysdeps/posix/posix_fallocate.c
new file mode 100644
index 0000000000..cd0f96113e
--- /dev/null
+++ b/sysdeps/posix/posix_fallocate.c
@@ -0,0 +1,71 @@
+/* Copyright (C) 2000 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+
+/* Reserve storage for the data of the file associated with FD. */
+
+int
+posix_fallocate (int fd, __off_t offset, size_t len)
+{
+ struct stat st;
+ struct statfs f;
+ size_t step;
+
+ /* `off_tī is a signed type. Therefore we can determine whether
+ OFFSET + LEN is too large if it is a negative value. */
+ if (offset < 0 || len == 0)
+ return EINVAL;
+ if (offset + len < 0)
+ return EFBIG;
+
+ /* First thing we have to make sure is that this is really a regular
+ file. */
+ if (__fxstat (_STAT_VER, fd, &st) != 0)
+ return EBADF;
+ if (S_ISFIFO (st.st_mode))
+ return ESPIPE;
+ if (! S_ISREG (st.st_mode))
+ return ENODEV;
+
+ /* We have to know the block size of the filesystem to get at least some
+ sort of performance. */
+ if (__fstatfs (fd, &f) != 0)
+ return errno;
+
+ /* Align OFFSET to block size and adjust LEN. */
+ step = (offset + f.f_bsize - 1) % ~f.f_bsize;
+ offset += step;
+
+ /* Write something to every block. */
+ while (len > step)
+ {
+ len -= step;
+
+ if (pwrite (fd, "", 1, offset) != 1)
+ return errno;
+
+ offset += step;
+ }
+
+ return 0;
+}
diff --git a/sysdeps/posix/posix_fallocate64.c b/sysdeps/posix/posix_fallocate64.c
new file mode 100644
index 0000000000..539244de58
--- /dev/null
+++ b/sysdeps/posix/posix_fallocate64.c
@@ -0,0 +1,71 @@
+/* Copyright (C) 2000 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+
+/* Reserve storage for the data of the file associated with FD. */
+
+int
+posix_fallocate64 (int fd, __off64_t offset, size_t len)
+{
+ struct stat64 st;
+ struct statfs64 f;
+ size_t step;
+
+ /* `off64_tī is a signed type. Therefore we can determine whether
+ OFFSET + LEN is too large if it is a negative value. */
+ if (offset < 0 || len == 0)
+ return EINVAL;
+ if (offset + len < 0)
+ return EFBIG;
+
+ /* First thing we have to make sure is that this is really a regular
+ file. */
+ if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+ return EBADF;
+ if (S_ISFIFO (st.st_mode))
+ return ESPIPE;
+ if (! S_ISREG (st.st_mode))
+ return ENODEV;
+
+ /* We have to know the block size of the filesystem to get at least some
+ sort of performance. */
+ if (__fstatfs64 (fd, &f) != 0)
+ return errno;
+
+ /* Align OFFSET to block size and adjust LEN. */
+ step = (offset + f.f_bsize - 1) % ~f.f_bsize;
+ offset += step;
+
+ /* Write something to every block. */
+ while (len > step)
+ {
+ len -= step;
+
+ if (pwrite64 (fd, "", 1, offset) != 1)
+ return errno;
+
+ offset += step;
+ }
+
+ return 0;
+}