readlinkat_chk.c 1.0 KB

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  1. /* Copyright (C) 2006-2026 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. <https://www.gnu.org/licenses/>. */
  14. #include <unistd.h>
  15. #include <sys/param.h>
  16. ssize_t
  17. __readlinkat_chk (int fd, const char *__restrict path,
  18. char *__restrict buf, size_t len,
  19. size_t buflen)
  20. {
  21. if (len > buflen)
  22. __chk_fail ();
  23. return readlinkat (fd, path, buf, len);
  24. }