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 <string.h>
39 #include <sys/types.h>
40 #include <sys/types32.h>
41 #include <sharefs/share.h>
42 #include "sharetab.h"
43
44 static share_t *sharedup();
45 static void sharefree();
46
47 /*
48 * Get an entry from the share table.
49 * There should be at least 4 fields:
50 *
51 * pathname resource fstype options [ description ]
52 *
53 * A fifth field (description) is optional.
54 *
55 * Returns:
56 * > 1 valid entry
57 * = 0 end of file
58 * < 0 error
59 */
60 int
getshare(FILE * fd,share_t ** shp)61 getshare(FILE *fd, share_t **shp)
62 {
63 static char *line = NULL;
64 static share_t *sh = NULL;
65 register char *p;
66 char *w = " \t";
67
68 if (line == NULL) {
69 line = (char *)malloc(BUFSIZ+1);
70 if (line == NULL)
71 return (-1);
72 }
73 if (sh == NULL) {
74 sh = (share_t *)malloc(sizeof (*sh));
75 if (sh == NULL)
76 return (-1);
77 }
78
79 p = fgets(line, BUFSIZ, fd);
80 if (p == NULL)
81 return (0);
82 line[strlen(line) - 1] = '\0';
83
84 sh->sh_path = strtok(p, w);
85 if (sh->sh_path == NULL)
86 return (-1);
87 sh->sh_res = strtok(NULL, w);
88 if (sh->sh_res == NULL)
89 return (-1);
90 sh->sh_fstype = strtok(NULL, w);
91 if (sh->sh_fstype == NULL)
92 return (-1);
93 sh->sh_opts = strtok(NULL, w);
94 if (sh->sh_opts == NULL)
95 return (-1);
96 sh->sh_descr = strtok(NULL, "");
97 if (sh->sh_descr == NULL)
98 sh->sh_descr = "";
99
100 *shp = sh;
101 return (1);
102 }
103
104 static share_t *
sharedup(share_t * sh)105 sharedup(share_t *sh)
106 {
107 share_t *nsh;
108
109 nsh = (share_t *)calloc(1, sizeof (*nsh));
110 if (nsh == NULL)
111 return (NULL);
112
113 nsh->sh_path = strdup(sh->sh_path);
114 if (nsh->sh_path == NULL)
115 goto alloc_failed;
116 nsh->sh_res = strdup(sh->sh_res);
117 if (nsh->sh_res == NULL)
118 goto alloc_failed;
119 nsh->sh_fstype = strdup(sh->sh_fstype);
120 if (nsh->sh_fstype == NULL)
121 goto alloc_failed;
122 nsh->sh_opts = strdup(sh->sh_opts);
123 if (nsh->sh_opts == NULL)
124 goto alloc_failed;
125 nsh->sh_descr = strdup(sh->sh_descr);
126 if (nsh->sh_descr == NULL)
127 goto alloc_failed;
128 return (nsh);
129
130 alloc_failed:
131 sharefree(nsh);
132 return (NULL);
133 }
134
135 static void
sharefree(share_t * sh)136 sharefree(share_t *sh)
137 {
138 if (sh == NULL)
139 return;
140 if (sh->sh_path != NULL)
141 free(sh->sh_path);
142 if (sh->sh_res != NULL)
143 free(sh->sh_res);
144 if (sh->sh_fstype != NULL)
145 free(sh->sh_fstype);
146 if (sh->sh_opts != NULL)
147 free(sh->sh_opts);
148 if (sh->sh_descr != NULL)
149 free(sh->sh_descr);
150 free(sh);
151 }
152
153 /*
154 * Return the value after "=" for option "opt"
155 * in option string "optlist".
156 */
157 char *
getshareopt(char * optlist,char * opt)158 getshareopt(char *optlist, char *opt)
159 {
160 char *p, *pe;
161 char *b;
162 static char *bb;
163
164 if (bb)
165 free(bb);
166 b = bb = strdup(optlist);
167 if (b == NULL)
168 return (NULL);
169
170 while (p = strtok(b, ",")) {
171 b = NULL;
172 if (pe = strchr(p, '=')) {
173 *pe = '\0';
174 if (strcmp(opt, p) == 0)
175 return (pe + 1);
176 }
177 if (strcmp(opt, p) == 0)
178 return ("");
179 }
180
181 return (NULL);
182 }
183