usr/src/lib/libfsmgt/common/nfs_netcfg.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <errno.h>
  30 #include <netconfig.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include "libfsmgt.h"
  34
  35 /*
  36  * Public methods
  37  */
  38
  39 void
  40 netcfg_free_networkid_list(char **netlist, int num_elements)
  41 {
  42         fileutil_free_string_array(netlist, num_elements);
  43 } /* netcfg_free_networkid_list */
  44
  45 char **
  46 netcfg_get_networkid_list(int *num_elements, int *errp)
  47 {
  48         struct netconfig        *nconf;
  49         NCONF_HANDLE            *nc;
  50         char                    **return_list = NULL;
  51
  52         /*
  53          * setnetconfig must be called before getnetconfig in order to get the
  54          * netconfig handle.
  55          */
  56         if ((nc = setnetconfig()) == (NCONF_HANDLE *)NULL) {
  57                 *errp = errno;
  58                 return (NULL);
  59         }
  60
  61         *num_elements = 0;
  62         while (nconf = getnetconfig(nc)) {
  63                 char    **tmp_list;
  64
  65                 /*
  66                  * Put the elements in the array.
  67                  */
  68                 tmp_list = realloc(return_list,
  69                         (size_t)(((*num_elements)+1) * sizeof (char *)));
  70                 if (tmp_list == NULL) {
  71                         *errp = errno;
  72                         netcfg_free_networkid_list(return_list, *num_elements);
  73                         *num_elements = 0;
  74                         (void) endnetconfig(nc);
  75                         return (NULL);
  76                 }
  77
  78                 return_list = tmp_list;
  79
  80                 return_list[(*num_elements)] = strdup(nconf->nc_netid);
  81                 if (return_list[(*num_elements)] == NULL) {
  82                         *errp = ENOMEM;
  83                         netcfg_free_networkid_list(return_list, *num_elements);
  84                         *num_elements = 0;
  85                         (void) endnetconfig(nc);
  86                         return (NULL);
  87                 }
  88
  89                 *num_elements = *num_elements + 1;
  90         }
  91
  92         (void) endnetconfig(nc);
  93         /*
  94          * Caller must free the space allocated to return_list by calling
  95          * netcfg_free_networkid_list.
  96          */
  97         return (return_list);
  98 } /* netcfg_get_networkid_list */