about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/posix_fadvise.c
blob: fb1e59b2d348bca267addc3e671b985df678da50 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
/* Copyright (C) 2003 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <fcntl.h>
#include <sysdep.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, size_t len, int advise)
{
#ifdef __NR_fadvise64
  return INLINE_SYSCALL (fadvise64, 5, fd,
			 __LONG_LONG_PAIR (offset >> 31, offset), len, advise);
#else
  __set_errno (ENOSYS);
  return -1;
#endif
}