45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/* Copyright (C) 1991,1993,1996-1999,2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <string.h>
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/* Generate a unique temporary filename using up to five characters of PFX
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if it is not NULL. The directory to put this file in is searched for
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as follows: First the environment variable "TMPDIR" is checked.
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If it contains the name of a writable directory, that directory is used.
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If not and if DIR is not NULL, that value is checked. If that fails,
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P_tmpdir is tried and finally "/tmp". The storage for the filename
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is allocated by `malloc'. */
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char *
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tempnam (const char *dir, const char *pfx)
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{
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char buf[FILENAME_MAX];
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if (__path_search (buf, FILENAME_MAX, dir, pfx, 1))
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return NULL;
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if (__gen_tempname (buf, __GT_NOCREATE))
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return NULL;
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return __strdup (buf);
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}
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link_warning (tempnam,
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"the use of `tempnam' is dangerous, better use `mkstemp'")
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