usr/src/lib/libfsmgt/common/sys_info.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 <netdb.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <strings.h>
  33 #include "libfsmgt.h"
  34
  35 /*
  36  * Public methods
  37  */
  38
  39 char *sys_get_hostname(int *errp) {
  40
  41         char    host[MAXHOSTNAMELEN + 1];
  42         char    *ret_val;
  43
  44         *errp = 0;
  45         if (gethostname(host, sizeof (host)) == -1) {
  46                 *errp = errno;
  47                 return (NULL);
  48         }
  49
  50         ret_val = strdup(host);
  51         if (ret_val == NULL) {
  52                 *errp = errno;
  53                 return (NULL);
  54         }
  55
  56         /*
  57          * Note: The space allocated for the return value must be freed by the
  58          * caller using free().
  59          */
  60         return (ret_val);
  61 } /* sys_get_hostname */