libsbutil/get_tmp_dir.c


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/*
 * get_tmp_dir.c
 *
 * Util functions.
 *
 * Copyright 1999-2006 Gentoo Foundation
 *
 *
 *      This program is free software; you can redistribute it and/or modify it
 *      under the terms of the GNU General Public License as published by the
 *      Free Software Foundation version 2 of the License.
 *
 *      This program 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
 *      General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License along
 *      with this program; if not, write to the Free Software Foundation, Inc.,
 *      675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Some parts might have Copyright:
 *
 *   Copyright (C) 2002 Brad House <brad@mainstreetsoftworks.com>
 *
 * $Header$
 */


#include <errno.h>
#include <limits.h>
#include <stdlib.h>

#include "sbutil.h"

int get_tmp_dir(char *path)
{
	save_errno();

	if (NULL == realpath(getenv(ENV_TMPDIR) ? getenv(ENV_TMPDIR)
					      : TMPDIR,
				path)) {
		if (NULL == realpath(TMPDIR, path))
			return -1;
	}

	/* Reset errno in case realpath set it */
	restore_errno();
		
	return 0;
}