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1 | /* Copyright (C) 1991, 1993, 1996 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
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 | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <string.h> | |
21 | ||
22 | ||
23 | /* Generate a unique filename in P_tmpdir. If S is NULL return NULL. | |
24 | This makes this function thread safe. */ | |
25 | char * | |
26 | tmpnam_r (char *s) | |
27 | { | |
28 | if (s == NULL) | |
29 | return NULL; | |
30 | ||
31 | /* In the following call we use the buffer pointed to by S if | |
32 | non-NULL although we don't know the size. But we limit the size | |
33 | to L_tmpnam characters in any case. */ | |
34 | return __stdio_gen_tempname (s, L_tmpnam, (const char *) NULL, | |
35 | (const char *) NULL, 0, | |
36 | (size_t *) NULL, (FILE **) NULL); | |
37 | } |