51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* Copyright (C) 1991, 1993 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.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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DEFUN(tempnam, (dir, pfx), CONST char *dir AND CONST char *pfx)
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{
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size_t len;
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register char *s;
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register char *t = __stdio_gen_tempname(dir, pfx, 1, &len, (FILE **) NULL);
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if (t == NULL)
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return NULL;
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s = (char *) malloc(len);
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if (s == NULL)
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return NULL;
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(void) memcpy(s, t, len);
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return s;
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}
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