libc/sysdeps/linux/powerpc/posix_fadvise.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * posix_fadvise() for uClibc
   4  * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html
   5  *
   6  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
   7  *
   8  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   9  */
  10
  11 #include <sys/syscall.h>
  12 #include <fcntl.h>
  13
  14 #ifdef __NR_fadvise64
  15 #define __NR_posix_fadvise __NR_fadvise64
  16 int posix_fadvise(int fd, off_t offset, off_t len, int advice)
  17 {
  18         INTERNAL_SYSCALL_DECL(err);
  19         int ret = (int) (INTERNAL_SYSCALL(posix_fadvise, err, 6, fd, 0,
  20          __LONG_LONG_PAIR (offset >> 31, offset), len, advice));
  21     if (INTERNAL_SYSCALL_ERROR_P (ret, err))
  22       return INTERNAL_SYSCALL_ERRNO (ret, err);
  23     return 0;
  24 }
  25
  26 #if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || !defined _syscall6)
  27 strong_alias(posix_fadvise,posix_fadvise64)
  28 #endif
  29
  30 #else
  31 int posix_fadvise(int fd attribute_unused, off_t offset attribute_unused, off_t len attribute_unused, int advice attribute_unused)
  32 {
  33 #warning This is not correct as far as SUSv3 is concerned.
  34         return ENOSYS;
  35 }
  36 #endif