contrib/openpam/lib/openpam_free_envlist.c

   1 /*-
   2  * Copyright (c) 2005 Dag-Erling Coïdan Smørgrav
   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  * $P4: //depot/projects/openpam/lib/openpam_free_envlist.c#2 $
  29  */
  30
  31 #include <stdlib.h>
  32
  33 #include <security/pam_appl.h>
  34
  35 #include "openpam_impl.h"
  36
  37 /*
  38  * OpenPAM extension
  39  *
  40  * Free an environment list
  41  */
  42
  43 void
  44 openpam_free_envlist(char **envlist)
  45 {
  46         char **env;
  47
  48         ENTER();
  49         if (envlist == NULL)
  50                 RETURNV();
  51         for (env = envlist; *env != NULL; ++env)
  52                 FREE(*env);
  53         FREE(envlist);
  54         RETURNV();
  55 }
  56
  57 /*
  58  * Error codes:
  59  */
  60
  61 /**
  62  * The =openpam_free_envlist function is a convenience function which
  63  * frees all the environment variables in an environment list, and the
  64  * list itself.
  65  * It is suitable for freeing the return value from =pam_getenvlist.
  66  */