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      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 (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2007 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 <sys/types.h>
     30 #include "sharemgr.h"
     31 #include <stdlib.h>
     32 #include <stdio.h>
     33 #include <string.h>
     34 
     35 /*
     36  * Utility functions shared by sharemgr and sharectl.
     37  */
     38 
     39 /*
     40  * add_opt(optlist, optarg, security?)
     41  *	Add a new parsed option to the option list provided.
     42  *	If the option is a security option, only add if we are
     43  *	processing security options.
     44  */
     45 int
     46 add_opt(struct options **optlistp, char *optarg, int unset)
     47 {
     48 	struct options *newopt, *tmp, *optlist;
     49 	char *optname;
     50 	char *optvalue;
     51 
     52 	optlist = *optlistp;
     53 	newopt = (struct options *)malloc(sizeof (struct options));
     54 	if (newopt == NULL)
     55 		return (OPT_ADD_MEMORY);
     56 
     57 	/* extract property/value pair */
     58 	optname = optarg;
     59 	if (!unset) {
     60 		optvalue = strchr(optname, '=');
     61 		if (optvalue == NULL) {
     62 			free(newopt);
     63 			return (OPT_ADD_SYNTAX);
     64 		}
     65 		*optvalue++ = '\0'; /* separate the halves */
     66 	} else {
     67 		optvalue = NULL;
     68 	}
     69 
     70 	newopt->optname = optname;
     71 	newopt->optvalue = optvalue;
     72 	newopt->next = NULL;
     73 	if (optlist == NULL) {
     74 		optlist = newopt;
     75 	} else {
     76 		for (tmp = optlist; tmp->next != NULL;
     77 		    tmp = tmp->next) {
     78 			/*
     79 			 * Check to see if this is a duplicate
     80 			 * value. We want to replace the first
     81 			 * instance with the second.
     82 			 */
     83 			if (strcmp(tmp->optname, optname) == 0) {
     84 				tmp->optvalue = optvalue;
     85 				free(newopt);
     86 				goto done;
     87 			}
     88 		}
     89 		tmp->next = newopt;
     90 	}
     91 done:
     92 	*optlistp = optlist;
     93 	return (OPT_ADD_OK);
     94 }
     95