1 /* $NetBSD: mount_ados.c,v 1.30 2020/07/26 08:20:22 mlelstv Exp $ */
2
3 /*
4 * Copyright (c) 1994 Christopher G. Demetriou
5 * 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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the
18 * NetBSD Project. See http://www.NetBSD.org/ for
19 * information about NetBSD.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
35 */
36
37 #include <sys/cdefs.h>
38 #ifndef lint
39 __RCSID("$NetBSD: mount_ados.c,v 1.30 2020/07/26 08:20:22 mlelstv Exp $");
40 #endif /* not lint */
41
42 #include <sys/param.h>
43 #include <sys/mount.h>
44 #include <sys/stat.h>
45 #include <assert.h>
46 #include <err.h>
47 #include <grp.h>
48 #include <pwd.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <unistd.h>
53
54 #include <adosfs/adosfs.h>
55
56 #include <mntopts.h>
57 #include <errno.h>
58
59 #include "mountprog.h"
60
61 static const struct mntopt mopts[] = {
62 MOPT_STDOPTS,
63 MOPT_GETARGS,
64 MOPT_NULL,
65 };
66
67 int mount_ados(int argc, char **argv);
68 __dead static void usage(void);
69
70 #ifndef MOUNT_NOMAIN
71 int
main(int argc,char ** argv)72 main(int argc, char **argv)
73 {
74 return mount_ados(argc, argv);
75 }
76 #endif
77
78 int
mount_ados(int argc,char ** argv)79 mount_ados(int argc, char **argv)
80 {
81 struct adosfs_args args;
82 struct stat sb;
83 mntoptparse_t mp;
84 int c, mntflags, set_gid, set_uid, set_mask;
85 char *dev, *dir, canon_dir[MAXPATHLEN], canon_dev[MAXPATHLEN];
86
87 mntflags = set_gid = set_uid = set_mask = 0;
88 (void)memset(&args, '\0', sizeof(args));
89
90 while ((c = getopt(argc, argv, "u:g:m:o:")) != -1) {
91 switch (c) {
92 case 'u':
93 args.uid = a_uid(optarg);
94 set_uid = 1;
95 break;
96 case 'g':
97 args.gid = a_gid(optarg);
98 set_gid = 1;
99 break;
100 case 'm':
101 args.mask = a_mask(optarg);
102 set_mask = 1;
103 break;
104 case 'o':
105 mp = getmntopts(optarg, mopts, &mntflags, 0);
106 if (mp == NULL)
107 err(1, "getmntopts");
108 freemntopts(mp);
109 break;
110 case '?':
111 default:
112 usage();
113 break;
114 }
115 }
116
117 if (optind + 2 != argc)
118 usage();
119
120 dev = argv[optind];
121 dir = argv[optind + 1];
122
123 pathadj(dev, canon_dev);
124 dev = canon_dev;
125
126 pathadj(dir, canon_dir);
127 dir = canon_dir;
128
129 args.fspec = dev;
130 if (!set_gid || !set_uid || !set_mask) {
131 if (stat(dir, &sb) == -1)
132 err(1, "stat %s", dir);
133
134 if (!set_uid)
135 args.uid = sb.st_uid;
136 if (!set_gid)
137 args.gid = sb.st_gid;
138 if (!set_mask)
139 args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
140 }
141
142 if (mount(MOUNT_ADOSFS, dir, mntflags, &args, sizeof args) == -1)
143 if (errno != EROFS)
144 err(1, "%s on %s", dev, dir);
145
146 if (mntflags & MNT_GETARGS) {
147 assert(errno != EROFS);
148 printf("uid=%d, gid=%d, mask=0%o\n", args.uid, args.gid,
149 args.mask);
150 exit(0);
151 }
152
153 mntflags |= MNT_RDONLY;
154 if (mount(MOUNT_ADOSFS, dir, mntflags, &args, sizeof args) == -1)
155 err(1, "%s on %s", dev, dir);
156
157 exit (0);
158 }
159
160 static void
usage(void)161 usage(void)
162 {
163
164 fprintf(stderr, "usage: mount_ados [-o options] [-u user] [-g group] [-m mask] bdev dir\n");
165 exit(1);
166 }
167