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568035b7 | 1 | /* Copyright (C) 1991-2013 Free Software Foundation, Inc. |
9d187dd4 | 2 | This file is part of the GNU C Library. |
d68171ed | 3 | |
9d187dd4 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
d68171ed | 8 | |
9d187dd4 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
d68171ed | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
d68171ed UD |
17 | |
18 | #include <stdio.h> | |
d68171ed UD |
19 | |
20 | /* Generate a unique filename in P_tmpdir. If S is NULL return NULL. | |
21 | This makes this function thread safe. */ | |
22 | char * | |
23 | tmpnam_r (char *s) | |
24 | { | |
25 | if (s == NULL) | |
26 | return NULL; | |
27 | ||
60876a75 | 28 | if (__path_search (s, L_tmpnam, NULL, NULL, 0)) |
7cabd57c | 29 | return NULL; |
7f3146e7 | 30 | if (__gen_tempname (s, 0, 0, __GT_NOCREATE)) |
7cabd57c UD |
31 | return NULL; |
32 | ||
33 | return s; | |
d68171ed | 34 | } |
e5448d7a UD |
35 | |
36 | link_warning (tmpnam_r, | |
37 | "the use of `tmpnam_r' is dangerous, better use `mkstemp'") |