openpam_free_envlist.c revision 255364 
1/*-
2 * Copyright (c) 2005-2011 Dag-Erling Sm��rgrav
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $Id: openpam_free_envlist.c 447 2011-10-22 02:47:36Z des $
29 */
30
31#ifdef HAVE_CONFIG_H
32# include "config.h"
33#endif
34
35#include <stdlib.h>
36
37#include <security/pam_appl.h>
38
39#include "openpam_impl.h"
40
41/*
42 * OpenPAM extension
43 *
44 * Free an environment list
45 */
46
47void
48openpam_free_envlist(char **envlist)
49{
50	char **env;
51
52	ENTER();
53	if (envlist == NULL)
54		RETURNV();
55	for (env = envlist; *env != NULL; ++env)
56		FREE(*env);
57	FREE(envlist);
58	RETURNV();
59}
60
61/*
62 * Error codes:
63 */
64
65/**
66 * The =openpam_free_envlist function is a convenience function which
67 * frees all the environment variables in an environment list, and the
68 * list itself.
69 * It is suitable for freeing the return value from =pam_getenvlist.
70 *
71 * AUTHOR DES
72 */
73