tmpnam_r.c 1.2 KB

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  1. /* Copyright (C) 1991, 1993, 1996, 1997, 1998 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 Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. 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. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. see <http://www.gnu.org/licenses/>. */
  14. #include <stdio.h>
  15. #include "../misc/internals/tempname.h"
  16. /* Generate a unique filename in P_tmpdir. If S is NULL return NULL.
  17. This makes this function thread safe. */
  18. char * tmpnam_r (char *s)
  19. {
  20. if (s == NULL)
  21. return NULL;
  22. if (__path_search (s, L_tmpnam, NULL, NULL, 0))
  23. return NULL;
  24. if (__gen_tempname (s, __GT_NOCREATE, 0, 0, 0))
  25. return NULL;
  26. return s;
  27. }