libfsmgt/common/nfs_netcfg.c

	nfs_netcfg.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <errno.h>
#include <netconfig.h>
#include <stdlib.h>
#include <string.h>
#include "libfsmgt.h"

/*
 * Public methods
 */

void
netcfg_free_networkid_list(char **netlist, int num_elements)
{
    fileutil_free_string_array(netlist, num_elements);
} /* netcfg_free_networkid_list */

char **
netcfg_get_networkid_list(int *num_elements, int *errp)
{
    struct netconfig    *nconf;
    NCONF_HANDLE        *nc;
    char            **return_list = NULL;

    /*
     * setnetconfig must be called before getnetconfig in order to get the
     * netconfig handle.
     */
    if ((nc = setnetconfig()) == (NCONF_HANDLE *)NULL) {
        *errp = errno;
        return (NULL);
    }

    *num_elements = 0;
    while (nconf = getnetconfig(nc)) {
        char    **tmp_list;

        /*
         * Put the elements in the array.
         */
        tmp_list = realloc(return_list,
            (size_t)(((*num_elements)+1) * sizeof (char *)));
        if (tmp_list == NULL) {
            *errp = errno;
            netcfg_free_networkid_list(return_list, *num_elements);
            *num_elements = 0;
            (void) endnetconfig(nc);
            return (NULL);
        }

        return_list = tmp_list;

        return_list[(*num_elements)] = strdup(nconf->nc_netid);
        if (return_list[(*num_elements)] == NULL) {
            *errp = ENOMEM;
            netcfg_free_networkid_list(return_list, *num_elements);
            *num_elements = 0;
            (void) endnetconfig(nc);
            return (NULL);
        }

        *num_elements = *num_elements + 1;
    }

    (void) endnetconfig(nc);
    /*
     * Caller must free the space allocated to return_list by calling
     * netcfg_free_networkid_list.
     */
    return (return_list);
} /* netcfg_get_networkid_list */