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44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/* Copyright (C) 1991-2017 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, see
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<http://www.gnu.org/licenses/>. */
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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
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PFX if it is not NULL. The directory to put this file in is
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searched for as follows: First the environment variable "TMPDIR" is
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checked. If it contains the name of a directory, that directory is
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used. If not and if DIR is not NULL, that value is checked. If
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that fails, P_tmpdir is tried and finally "/tmp". The storage for
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the filename 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, 0, 0, __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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