mkdtemp.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* mkdtemp(3C) - create a directory with a unique name.
*/
#include "lint.h"
#include <alloca.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
char *
mkdtemp(char *template)
{
char *t = alloca(strlen(template) + 1);
char *r;
/* Save template */
(void) strcpy(t, template);
for (;;) {
r = mktemp(template);
if (*r == '\0')
return (NULL);
if (mkdir(template, 0700) == 0)
return (r);
/* Other errors indicate persistent conditions. */
if (errno != EEXIST)
return (NULL);
/* Reset template */
(void) strcpy(template, t);
}
}