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/* Copyright (C) 1991-2020 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <string.h>
/* Generate a unique temporary filename using up to five characters of
PFX if it is not NULL. The directory to put this file in is
searched for as follows: First the environment variable "TMPDIR" is
checked. If it contains the name of a directory, that directory is
used. If not and if DIR is not NULL, that value is checked. If
that fails, P_tmpdir is tried and finally "/tmp". The storage for
the filename is allocated by `malloc'. */
char *
tempnam (const char *dir, const char *pfx)
{
char buf[FILENAME_MAX];
if (__path_search (buf, FILENAME_MAX, dir, pfx, 1))
return NULL;
if (__gen_tempname (buf, 0, 0, __GT_NOCREATE))
return NULL;
return __strdup (buf);
}
link_warning (tempnam,
"the use of `tempnam' is dangerous, better use `mkstemp'")
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