posix_fadvise.c 1.0 KB

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  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. /* need to hide the 64bit prototype or the strong_alias()
  11. * will fail when __NR_fadvise64_64 doesnt exist */
  12. #define posix_fadvise64 __hideposix_fadvise64
  13. #include "syscalls.h"
  14. #include <fcntl.h>
  15. #undef posix_fadvise64
  16. #ifdef __NR_fadvise64
  17. #define __NR_posix_fadvise __NR_fadvise64
  18. _syscall4(int, posix_fadvise, int, fd, off_t, offset,
  19. off_t, len, int, advice);
  20. #if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || !defined _syscall6)
  21. extern __typeof(posix_fadvise) posix_fadvise64;
  22. strong_alias(posix_fadvise,posix_fadvise64)
  23. #endif
  24. #else
  25. int posix_fadvise(int fd attribute_unused, off_t offset attribute_unused, off_t len attribute_unused, int advice attribute_unused)
  26. {
  27. __set_errno(ENOSYS);
  28. return -1;
  29. }
  30. #endif