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d4697bc9 | 1 | /* Copyright (C) 1991-2014 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
c84142e8 | 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. | |
28f540f4 | 8 | |
c84142e8 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. |
28f540f4 | 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/>. */ | |
28f540f4 | 17 | |
28f540f4 | 18 | #include <stdio.h> |
28f540f4 RM |
19 | #include <string.h> |
20 | ||
7d55c9eb UD |
21 | /* Generate a unique temporary filename using up to five characters of |
22 | PFX if it is not NULL. The directory to put this file in is | |
23 | searched for as follows: First the environment variable "TMPDIR" is | |
24 | checked. If it contains the name of a directory, that directory is | |
25 | used. If not and if DIR is not NULL, that value is checked. If | |
26 | that fails, P_tmpdir is tried and finally "/tmp". The storage for | |
27 | the filename is allocated by `malloc'. */ | |
28f540f4 | 28 | char * |
d68171ed | 29 | tempnam (const char *dir, const char *pfx) |
28f540f4 | 30 | { |
d68171ed | 31 | char buf[FILENAME_MAX]; |
28f540f4 | 32 | |
60876a75 | 33 | if (__path_search (buf, FILENAME_MAX, dir, pfx, 1)) |
28f540f4 RM |
34 | return NULL; |
35 | ||
7f3146e7 | 36 | if (__gen_tempname (buf, 0, 0, __GT_NOCREATE)) |
28f540f4 RM |
37 | return NULL; |
38 | ||
7ce241a0 | 39 | return __strdup (buf); |
28f540f4 | 40 | } |
e5448d7a UD |
41 | |
42 | link_warning (tempnam, | |
43 | "the use of `tempnam' is dangerous, better use `mkstemp'") |