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 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Portions of this source code were derived from Berkeley 4.3 BSD
32 * under license from the Regents of the University of California.
33 */
34
35 #pragma ident "%Z%%M% %I% %E% SMI"
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <unistd.h>
41 #include <sharefs/share.h>
42 #include "sharetab.h"
43
44 /*
45 * Get an entry from the share table.
46 * There should be at least 4 fields:
47 *
48 * pathname resource fstype options [ description ]
49 *
50 * A fifth field (description) is optional.
51 *
52 * Returns:
53 * > 1 valid entry
54 * = 0 end of file
55 * < 0 error
56 */
57 int
getshare(FILE * fd,share_t ** shp)58 getshare(FILE *fd, share_t **shp)
59 {
60 static char *line = NULL;
61 static share_t *sh = NULL;
62 char *p;
63 char *lasts;
64 char *w = " \t";
65
66 if (line == NULL) {
67 line = (char *)malloc(MAXBUFSIZE+1);
68 if (line == NULL)
69 return (-1);
70 }
71 if (sh == NULL) {
72 sh = (share_t *)malloc(sizeof (*sh));
73 if (sh == NULL)
74 return (-1);
75 }
76
77 p = fgets(line, MAXBUFSIZE, fd);
78 if (p == NULL)
79 return (0);
80 line[strlen(line) - 1] = '\0';
81
82 sh->sh_path = (char *)strtok_r(p, w, &lasts);
83 if (sh->sh_path == NULL)
84 return (-3);
85 sh->sh_res = (char *)strtok_r(NULL, w, &lasts);
86 if (sh->sh_res == NULL)
87 return (-3);
88 sh->sh_fstype = (char *)strtok_r(NULL, w, &lasts);
89 if (sh->sh_fstype == NULL)
90 return (-3);
91 sh->sh_opts = (char *)strtok_r(NULL, w, &lasts);
92 if (sh->sh_opts == NULL)
93 return (-3);
94 sh->sh_descr = (char *)strtok_r(NULL, "", &lasts);
95 if (sh->sh_descr == NULL)
96 sh->sh_descr = "";
97
98 *shp = sh;
99 return (1);
100 }
101
102 share_t *
sharedup(share_t * sh)103 sharedup(share_t *sh)
104 {
105 share_t *nsh;
106
107 nsh = (share_t *)calloc(1, sizeof (*nsh));
108 if (nsh == NULL)
109 return (NULL);
110
111 if (sh->sh_path) {
112 nsh->sh_path = strdup(sh->sh_path);
113 if (nsh->sh_path == NULL)
114 goto alloc_failed;
115 }
116
117 if (sh->sh_res) {
118 nsh->sh_res = strdup(sh->sh_res);
119 if (nsh->sh_res == NULL)
120 goto alloc_failed;
121 }
122 if (sh->sh_fstype) {
123 nsh->sh_fstype = strdup(sh->sh_fstype);
124 if (nsh->sh_fstype == NULL)
125 goto alloc_failed;
126 }
127 if (sh->sh_opts) {
128 nsh->sh_opts = strdup(sh->sh_opts);
129 if (nsh->sh_opts == NULL)
130 goto alloc_failed;
131 }
132 if (sh->sh_descr) {
133 nsh->sh_descr = strdup(sh->sh_descr);
134 if (nsh->sh_descr == NULL)
135 goto alloc_failed;
136 }
137 return (nsh);
138
139 alloc_failed:
140 sharefree(nsh);
141 return (NULL);
142 }
143
144 void
sharefree(share_t * sh)145 sharefree(share_t *sh)
146 {
147 if (sh->sh_path != NULL)
148 free(sh->sh_path);
149 if (sh->sh_res != NULL)
150 free(sh->sh_res);
151 if (sh->sh_fstype != NULL)
152 free(sh->sh_fstype);
153 if (sh->sh_opts != NULL)
154 free(sh->sh_opts);
155 if (sh->sh_descr != NULL)
156 free(sh->sh_descr);
157 free(sh);
158 }
159
160 /*
161 * Return the value after "=" for option "opt"
162 * in option string "optlist". Caller must
163 * free returned value.
164 */
165 char *
getshareopt(char * optlist,char * opt)166 getshareopt(char *optlist, char *opt)
167 {
168 char *p, *pe;
169 char *b;
170 char *bb;
171 char *lasts;
172 char *val = NULL;
173
174 b = bb = strdup(optlist);
175 if (b == NULL)
176 return (NULL);
177
178 while (p = (char *)strtok_r(b, ",", &lasts)) {
179 b = NULL;
180 if (pe = strchr(p, '=')) {
181 *pe = '\0';
182 if (strcmp(opt, p) == 0) {
183 val = strdup(pe + 1);
184 goto done;
185 }
186 }
187 if (strcmp(opt, p) == 0) {
188 val = strdup("");
189 goto done;
190 }
191 }
192 done:
193 free(bb);
194 return (val);
195 }
196