1 /*-
2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)getmntopts.c 8.3 (Berkeley) 3/29/95
34 * $Id: getmntopts.c,v 1.1 2000/03/29 01:26:41 bp Exp $
35 */
36
37 #include <sys/param.h>
38
39 #include <err.h>
40 #include <stdlib.h>
41 #include <string.h>
42
43 #include "mntopts.h"
44
45 int getmnt_silent = 0;
46
47 void
getmntopts(const char * options,const struct mntopt * m0,int * flagp,int * altflagp)48 getmntopts(const char *options, const struct mntopt *m0, int *flagp,
49 int *altflagp)
50 {
51 const struct mntopt *m;
52 int negative, len;
53 char *opt, *optbuf, *p;
54 int *thisflagp;
55
56 /* Copy option string, since it is about to be torn asunder... */
57 if ((optbuf = strdup(options)) == NULL)
58 err(1, NULL);
59
60 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
61 /* Check for "no" prefix. */
62 if (opt[0] == 'n' && opt[1] == 'o') {
63 negative = 1;
64 opt += 2;
65 } else
66 negative = 0;
67
68 /*
69 * for options with assignments in them (ie. quotas)
70 * ignore the assignment as it's handled elsewhere
71 */
72 p = strchr(opt, '=');
73 if (p)
74 *++p = '\0';
75
76 /* Scan option table. */
77 for (m = m0; m->m_option != NULL; ++m) {
78 len = strlen(m->m_option);
79 if (strncasecmp(opt, m->m_option, len) == 0)
80 if ( m->m_option[len] == '\0'
81 || m->m_option[len] == '='
82 )
83 break;
84 }
85
86 /* Save flag, or fail if option is not recognized. */
87 if (m->m_option) {
88 thisflagp = m->m_altloc ? altflagp : flagp;
89 if (negative == m->m_inverse)
90 *thisflagp |= m->m_flag;
91 else
92 *thisflagp &= ~m->m_flag;
93 } else if (!getmnt_silent) {
94 errx(1, "-o %s: option not supported", opt);
95 }
96 }
97
98 free(optbuf);
99 }
100