statfs.c 1.3 KB

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  1. /* vi: set sw=4 ts=4: */
  2. /*
  3. * statfs() for uClibc
  4. *
  5. * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
  6. *
  7. * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  8. */
  9. #include <sys/syscall.h>
  10. #include <string.h>
  11. #include <sys/param.h>
  12. #include <sys/vfs.h>
  13. extern __typeof(statfs) __libc_statfs attribute_hidden;
  14. #if defined __NR_statfs64 && !defined __NR_statfs
  15. int __libc_statfs(const char *path, struct statfs *buf)
  16. {
  17. int err = INLINE_SYSCALL(statfs64, 3, path, sizeof(*buf), buf);
  18. if (err == 0) {
  19. /* Did we overflow? */
  20. if (buf->__pad1 || buf->__pad2 || buf->__pad3 ||
  21. buf->__pad4 || buf->__pad5) {
  22. __set_errno(EOVERFLOW);
  23. return -1;
  24. }
  25. }
  26. return err;
  27. }
  28. # if defined __UCLIBC_LINUX_SPECIFIC__ || defined __UCLIBC_HAS_THREADS_NATIVE__
  29. /* statfs is used by NPTL, so it must exported in case */
  30. weak_alias(__libc_statfs, statfs)
  31. libc_hidden_def(statfs)
  32. # endif
  33. /* For systems which have both, prefer the old one */
  34. #else
  35. # define __NR___libc_statfs __NR_statfs
  36. _syscall2(int, __libc_statfs, const char *, path, struct statfs *, buf)
  37. # if defined __UCLIBC_LINUX_SPECIFIC__ || defined __UCLIBC_HAS_THREADS_NATIVE__
  38. /* statfs is used by NPTL, so it must exported in case */
  39. weak_alias(__libc_statfs, statfs)
  40. libc_hidden_def(statfs)
  41. # endif
  42. #endif