1 /* $NetBSD: mount_udf.c,v 1.15 2019/10/16 21:52:22 maya Exp $ */
2
3 /*
4 * Copyright (c) 2006 Reinoud Zandijk
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 */
28
29
30 #include <sys/cdefs.h>
31 #ifndef lint
32 __RCSID("$NetBSD: mount_udf.c,v 1.15 2019/10/16 21:52:22 maya Exp $");
33 #endif /* not lint */
34
35
36 #include <sys/param.h>
37 #include <sys/mount.h>
38 #include <sys/stat.h>
39
40 #include <assert.h>
41 #include <err.h>
42 #include <errno.h>
43 #include <grp.h>
44 #include <pwd.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <time.h>
49 #include <unistd.h>
50 #include <util.h>
51
52
53 /* mount specific options */
54 #include <fs/udf/udf_mount.h>
55 #include <mntopts.h>
56
57 #include "mountprog.h"
58 #include "mount_udf.h"
59
60 /* options to pass on to the `mount' call */
61 static const struct mntopt mopts[] = {
62 MOPT_STDOPTS, /* `normal' options */
63 MOPT_ASYNC, /* default */
64 MOPT_NOATIME, /* dont update access times */
65 MOPT_RELATIME, /* update access times on change*/
66 MOPT_UPDATE, /* not yet supported */
67 MOPT_GETARGS, /* printing */
68 MOPT_NULL,
69 };
70
71
72 /* prototypes */
73 static void usage(void) __dead;
74
75
76 /* code */
77
78 static void
usage(void)79 usage(void)
80 {
81 (void)fprintf(stderr, "Usage: %s [-g gid] [-o options] [-s session] "
82 "[-t gmtoff] [-u uid] special node\n", getprogname());
83 exit(EXIT_FAILURE);
84 }
85
86
87 #ifndef MOUNT_NOMAIN
88 int
main(int argc,char ** argv)89 main(int argc, char **argv)
90 {
91
92 setprogname(argv[0]);
93 return mount_udf(argc, argv);
94 }
95 #endif
96
97
98 /* main routine */
99 void
mount_udf_parseargs(int argc,char ** argv,struct udf_args * args,int * mntflags,char * canon_dev,char * canon_dir)100 mount_udf_parseargs(int argc, char **argv,
101 struct udf_args *args, int *mntflags,
102 char *canon_dev, char *canon_dir)
103 {
104 struct tm *tm;
105 time_t now;
106 uid_t anon_uid, nobody_uid;
107 gid_t anon_gid, nobody_gid;
108 int ch, set_gmtoff;
109 uint32_t sector_size;
110 mntoptparse_t mp;
111
112 /* initialise */
113 (void)memset(args, 0, sizeof(*args));
114
115 set_gmtoff = *mntflags = 0;
116 sector_size = 0;
117
118 /* get nobody */
119 nobody_uid = anon_uid = a_uid("nobody");
120 nobody_gid = anon_gid = a_gid("nobody");
121
122 /* NEVER EVER allow nobody_uid:nobody_gid to be 0:0 */
123 assert(nobody_uid != 0);
124 assert(nobody_gid != 0);
125
126 while ((ch = getopt(argc, argv, "cg:o:s:t:u:")) != -1) {
127 switch (ch) {
128 case 'c' :
129 args->udfmflags |= UDFMNT_CLOSESESSION;
130 break;
131 case 'g' :
132 /* convert groupname or numeric equiv. */
133 anon_gid = a_gid(optarg);
134 break;
135 case 'u' :
136 /* convert username or numeric equiv. */
137 anon_uid = a_uid(optarg);
138 break;
139 case 'o' :
140 /* process generic mount options */
141 mp = getmntopts(optarg, mopts, mntflags, 0);
142 if (mp == NULL)
143 err(EXIT_FAILURE, "getmntopts");
144 freemntopts(mp);
145 break;
146 case 's' :
147 args->sessionnr = a_num(optarg, "session number");
148 break;
149 case 't' :
150 args->gmtoff = a_num(optarg, "gmtoff");
151 set_gmtoff = 1;
152 break;
153 default :
154 usage();
155 /* NOTREACHED */
156 }
157 }
158
159 if (optind + 2 != argc)
160 usage();
161
162 if (!set_gmtoff) {
163 /* use user's time zone as default */
164 (void)time(&now);
165 tm = localtime(&now);
166 args->gmtoff = tm->tm_gmtoff;
167 }
168
169 /* get device and directory specifier */
170 pathadj(argv[optind], canon_dev);
171 pathadj(argv[optind+1], canon_dir);
172
173 args->version = UDFMNT_VERSION;
174 args->fspec = canon_dev;
175 args->anon_uid = anon_uid;
176 args->anon_gid = anon_gid;
177 args->nobody_uid = nobody_uid;
178 args->nobody_gid = nobody_gid;
179 args->sector_size = sector_size; /* invalid */
180 }
181
182 int
mount_udf(int argc,char * argv[])183 mount_udf(int argc, char *argv[])
184 {
185 struct udf_args args;
186 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
187 int mntflags;
188
189 mount_udf_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
190
191 /* mount it! :) */
192 if (mount(MOUNT_UDF, canon_dir, mntflags, &args, sizeof args) == -1)
193 err(EXIT_FAILURE, "Cannot mount %s on %s", canon_dev,canon_dir);
194
195 if (mntflags & MNT_GETARGS) {
196 char buf[1024];
197
198 (void)snprintb(buf, sizeof(buf), UDFMNT_BITS,
199 (uint64_t)args.udfmflags);
200 (void)printf("gmtoffset=%d, sessionnr=%d, flags=%s\n",
201 args.gmtoff, args.sessionnr, buf);
202 }
203
204 return EXIT_SUCCESS;
205 }
206