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glibc/stdio-common/tmpnam_r.c
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/* Copyright (C) 1991, 1993, 1996, 1997 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Library General Public License as | |
published by the Free Software Foundation; either version 2 of the | |
License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Library General Public License for more details. | |
You should have received a copy of the GNU Library General Public | |
License along with the GNU C Library; see the file COPYING.LIB. If not, | |
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
Boston, MA 02111-1307, USA. */ | |
#include <stdio.h> | |
#include <string.h> | |
/* Generate a unique filename in P_tmpdir. If S is NULL return NULL. | |
This makes this function thread safe. */ | |
char * | |
tmpnam_r (char *s) | |
{ | |
if (s == NULL) | |
return NULL; | |
/* In the following call we use the buffer pointed to by S if | |
non-NULL although we don't know the size. But we limit the size | |
to L_tmpnam characters in any case. */ | |
return __stdio_gen_tempname (s, L_tmpnam, (const char *) NULL, | |
(const char *) NULL, 0, | |
(size_t *) NULL, (FILE **) NULL); | |
} |