fxstatat64.c 1.8 KB

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  1. /* Copyright (C) 2005-2019 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <errno.h>
  15. #include <fcntl.h>
  16. #include <stddef.h>
  17. #include <stdio.h>
  18. #include <string.h>
  19. #include <sys/stat.h>
  20. #include <kernel_stat.h>
  21. #include <sysdep.h>
  22. #include <sys/syscall.h>
  23. #include <statx_cp.h>
  24. /* Get information about the file NAME in BUF. */
  25. int
  26. __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
  27. {
  28. if (__glibc_unlikely (vers != _STAT_VER_LINUX))
  29. return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
  30. int result;
  31. INTERNAL_SYSCALL_DECL (err);
  32. #ifdef __NR_fstatat64
  33. result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, st, flag);
  34. #else
  35. struct statx tmp;
  36. result = INTERNAL_SYSCALL (statx, err, 5, fd, file, AT_NO_AUTOMOUNT | flag,
  37. STATX_BASIC_STATS, &tmp);
  38. if (result == 0)
  39. __cp_stat64_statx (st, &tmp);
  40. #endif
  41. if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
  42. return 0;
  43. else
  44. return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
  45. err));
  46. }
  47. libc_hidden_def (__fxstatat64)