1 /* $NetBSD: mount_sysvbfs.c,v 1.8 2011/08/29 14:35:02 joerg Exp $ */
2
3 /*-
4 * Copyright (c) 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __COPYRIGHT("@(#) Copyright (c) 1993, 1994\
35 The Regents of the University of California. All rights reserved.");
36 #endif /* not lint */
37
38 #ifndef lint
39 __RCSID("$NetBSD: mount_sysvbfs.c,v 1.8 2011/08/29 14:35:02 joerg Exp $");
40 #endif /* not lint */
41
42 #include <sys/param.h>
43 #include <sys/mount.h>
44
45 #include <err.h>
46 #include <errno.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49
50 #include <string.h>
51 #include <unistd.h>
52
53 #include <mntopts.h>
54
55 #include "mountprog.h"
56 #include "mount_sysvbfs.h"
57
58 static const struct mntopt mopts[] = {
59 MOPT_STDOPTS,
60 MOPT_UPDATE,
61 MOPT_GETARGS,
62 MOPT_NULL,
63 };
64
65 __dead static void
sysvbfs_usage(void)66 sysvbfs_usage(void)
67 {
68
69 (void)fprintf(stderr, "usage: %s [-o options] special node\n",
70 getprogname());
71 exit(EXIT_FAILURE);
72 }
73
74 #ifndef MOUNT_NOMAIN
75 int
main(int argc,char ** argv)76 main(int argc, char **argv)
77 {
78
79 return mount_sysvbfs(argc, argv);
80 }
81 #endif
82
83 void
mount_sysvbfs_parseargs(int argc,char ** argv,struct sysvbfs_args * args,int * mntflags,char * canon_dev,char * canon_dir)84 mount_sysvbfs_parseargs(int argc, char **argv,
85 struct sysvbfs_args *args, int *mntflags,
86 char *canon_dev, char *canon_dir)
87 {
88 int ch;
89 mntoptparse_t mp;
90
91 *mntflags = 0;
92 optind = optreset = 1; /* Reset for parse of new argv. */
93 while ((ch = getopt(argc, argv, "o:")) != -1)
94 switch (ch) {
95 case 'o':
96 mp = getmntopts(optarg, mopts, mntflags, 0);
97 if (mp == NULL)
98 err(1, "getmntopts");
99 freemntopts(mp);
100 break;
101 case '?':
102 default:
103 sysvbfs_usage();
104 }
105 argc -= optind;
106 argv += optind;
107
108 if (argc != 2)
109 sysvbfs_usage();
110
111 pathadj(argv[0], canon_dev);
112 args->fspec = canon_dev;
113 pathadj(argv[1], canon_dir);
114 }
115
116 int
mount_sysvbfs(int argc,char * argv[])117 mount_sysvbfs(int argc, char *argv[])
118 {
119 struct sysvbfs_args args;
120 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
121 const char *errcause;
122 int mntflags;
123
124 mount_sysvbfs_parseargs(argc, argv, &args, &mntflags,
125 canon_dev, canon_dir);
126
127 if (mount(MOUNT_SYSVBFS, canon_dir, mntflags, &args, sizeof args)==-1) {
128 switch (errno) {
129 case EMFILE:
130 errcause = "mount table full";
131 break;
132 case EINVAL:
133 if (mntflags & MNT_UPDATE)
134 errcause =
135 "specified device does not match mounted device";
136 else
137 errcause = "incorrect super block";
138 break;
139 default:
140 errcause = strerror(errno);
141 break;
142 }
143 errx(EXIT_FAILURE, "%s on %s: %s",
144 canon_dev, canon_dir, errcause);
145 }
146 exit(EXIT_SUCCESS);
147 }
148