1 /* Copyright (C) 1991, 1993, 1996, 1997, 1998 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 not,
16 see <http://www.gnu.org/licenses/>. */
17
18 #include <stdio.h>
19 #include "../misc/internals/tempname.h"
20
21 /* Generate a unique filename in P_tmpdir. If S is NULL return NULL.
22 This makes this function thread safe. */
tmpnam_r(char * s)23 char * tmpnam_r (char *s)
24 {
25 if (s == NULL)
26 return NULL;
27
28 if (__path_search (s, L_tmpnam, NULL, NULL, 0))
29 return NULL;
30 if (__gen_tempname (s, __GT_NOCREATE, 0))
31 return NULL;
32
33 return s;
34 }
35 link_warning (tmpnam_r, "the use of OBSOLESCENT `tmpnam_r' is discouraged, use `mkstemp'")
36