xref: /freebsd/sbin/mount_udf/mount_udf.c (revision a03411e84728e9b267056fd31c7d1d9d1dc1b01e)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1992, 1993, 1994
5  *      The Regents of the University of California.  All rights reserved.
6  * Copyright (c) 2002 Scott Long
7  *
8  * This code is derived from software contributed to Berkeley
9  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
10  * Support code is derived from software contributed to Berkeley
11  * by Atsushi Murai (amurai@spec.co.jp).
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the University nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 /*
39  * This is just a rip-off of mount_iso9660.c.  It's been vastly simplified
40  * because UDF doesn't take any options at this time.
41  */
42 
43 #include <sys/cdio.h>
44 #include <sys/file.h>
45 #include <sys/iconv.h>
46 #include <sys/param.h>
47 #include <sys/linker.h>
48 #include <sys/module.h>
49 #include <sys/mount.h>
50 #include <sys/uio.h>
51 
52 #include <fs/udf/udf_mount.h>
53 
54 #include <err.h>
55 #include <errno.h>
56 #include <stdlib.h>
57 #include <stdio.h>
58 #include <string.h>
59 #include <sysexits.h>
60 #include <unistd.h>
61 
62 #include "mntopts.h"
63 
64 static struct mntopt mopts[] = {
65 	MOPT_STDOPTS,
66 	MOPT_UPDATE,
67 	MOPT_END
68 };
69 
70 int	set_charset(char **, char **, const char *);
71 void	usage(void);
72 
73 int
74 main(int argc, char **argv)
75 {
76 	char mntpath[MAXPATHLEN];
77 	char fstype[] = "udf";
78 	struct iovec *iov;
79 	char *cs_disk, *cs_local, *dev, *dir;
80 	int ch, iovlen, mntflags, udf_flags, verbose;
81 
82 	iovlen = mntflags = udf_flags = verbose = 0;
83 	cs_disk = cs_local = NULL;
84 	iov = NULL;
85 	while ((ch = getopt(argc, argv, "o:vC:")) != -1)
86 		switch (ch) {
87 		case 'o':
88 			getmntopts(optarg, mopts, &mntflags, NULL);
89 			break;
90 		case 'v':
91 			verbose++;
92 			break;
93 		case 'C':
94 			if (set_charset(&cs_disk, &cs_local, optarg) == -1)
95 				err(EX_OSERR, "udf_iconv");
96 			udf_flags |= UDFMNT_KICONV;
97 			break;
98 		case '?':
99 		default:
100 			usage();
101 		}
102 	argc -= optind;
103 	argv += optind;
104 
105 	if (argc != 2)
106 		usage();
107 
108 	dev = argv[0];
109 	dir = argv[1];
110 
111 	/*
112 	 * Resolve the mountpoint with realpath(3) and remove unnecessary
113 	 * slashes from the devicename if there are any.
114 	 */
115 	if (checkpath(dir, mntpath) != 0)
116 		err(EX_USAGE, "%s", mntpath);
117 	(void)rmslashes(dev, dev);
118 
119 	/*
120 	 * UDF file systems are not writeable.
121 	 */
122 	mntflags |= MNT_RDONLY;
123 
124 	build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
125 	build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
126 	build_iovec(&iov, &iovlen, "from", dev, (size_t)-1);
127 	build_iovec(&iov, &iovlen, "flags", &udf_flags, sizeof(udf_flags));
128 	if (udf_flags & UDFMNT_KICONV) {
129 		build_iovec(&iov, &iovlen, "cs_disk", cs_disk, (size_t)-1);
130 		build_iovec(&iov, &iovlen, "cs_local", cs_local, (size_t)-1);
131 	}
132 	if (nmount(iov, iovlen, mntflags) < 0)
133 		err(1, "%s", dev);
134 	exit(0);
135 }
136 
137 int
138 set_charset(char **cs_disk, char **cs_local, const char *localcs)
139 {
140 	int error;
141 
142 	if (modfind("udf_iconv") < 0)
143 		if (kldload("udf_iconv") < 0 || modfind("udf_iconv") < 0) {
144 			warnx( "cannot find or load \"udf_iconv\" kernel module");
145 			return (-1);
146 		}
147 
148 	if ((*cs_disk = malloc(ICONV_CSNMAXLEN)) == NULL)
149 		return (-1);
150 	if ((*cs_local = malloc(ICONV_CSNMAXLEN)) == NULL)
151 		return (-1);
152 	strncpy(*cs_disk, ENCODING_UNICODE, ICONV_CSNMAXLEN);
153 	strncpy(*cs_local, localcs, ICONV_CSNMAXLEN);
154 	error = kiconv_add_xlat16_cspairs(*cs_disk, *cs_local);
155 	if (error)
156 		return (-1);
157 
158 	return (0);
159 }
160 
161 void
162 usage(void)
163 {
164 	(void)fprintf(stderr,
165 		"usage: mount_udf [-v] [-o options] [-C charset] special node\n");
166 	exit(EX_USAGE);
167 }
168