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 * 7 * This code is derived from software contributed to Berkeley 8 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 9 * Support code is derived from software contributed to Berkeley 10 * by Atsushi Murai (amurai@spec.co.jp). 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 37 */ 38 39#ifndef lint 40static const char copyright[] = 41"@(#) Copyright (c) 1992, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43#endif /* not lint */ 44 45#ifndef lint 46/* 47static char sccsid[] = "@(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95"; 48*/ 49static const char rcsid[] = 50 "$FreeBSD$"; 51#endif /* not lint */ 52 53#include <sys/cdio.h> 54#include <sys/file.h> 55#include <sys/param.h> 56#include <sys/mount.h> 57#include <sys/module.h> 58#include <sys/iconv.h> 59#include <sys/linker.h> 60 61#include <arpa/inet.h> 62 63#include <err.h> 64#include <errno.h> 65#include <stdlib.h> 66#include <stdio.h> 67#include <string.h> 68#include <sysexits.h> 69#include <unistd.h> 70 71#include "mntopts.h" 72 73static struct mntopt mopts[] = { 74 MOPT_STDOPTS, 75 MOPT_UPDATE, 76 MOPT_END 77}; 78 79static int get_ssector(const char *dev); 80static int set_charset(struct iovec **, int *iovlen, const char *); 81void usage(void); 82 83int 84main(int argc, char **argv) 85{ 86 struct iovec *iov; 87 int iovlen; 88 int ch, mntflags; 89 char *dev, *dir, *p, *val, mntpath[MAXPATHLEN]; 90 int verbose; 91 int ssector; /* starting sector, 0 for 1st session */ 92 char fstype[] = "cd9660"; 93 94 iov = NULL; 95 iovlen = 0; 96 mntflags = verbose = 0; 97 ssector = -1; 98 99 while ((ch = getopt(argc, argv, "begjo:rs:vC:")) != -1) 100 switch (ch) { 101 case 'b': 102 build_iovec(&iov, &iovlen, "brokenjoliet", NULL, (size_t)-1); 103 break; 104 case 'e': 105 build_iovec(&iov, &iovlen, "extatt", NULL, (size_t)-1); 106 break; 107 case 'g': 108 build_iovec(&iov, &iovlen, "gens", NULL, (size_t)-1); 109 break; 110 case 'j': 111 build_iovec(&iov, &iovlen, "nojoliet", NULL, (size_t)-1); 112 break; 113 case 'o': 114 getmntopts(optarg, mopts, &mntflags, NULL); 115 p = strchr(optarg, '='); 116 val = NULL; 117 if (p != NULL) { 118 *p = '\0'; 119 val = p + 1; 120 } 121 build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); 122 break; 123 case 'r': 124 build_iovec(&iov, &iovlen, "norrip", NULL, (size_t)-1); 125 break; 126 case 's': 127 ssector = atoi(optarg); 128 break; 129 case 'v': 130 verbose++; 131 break; 132 case 'C': 133 if (set_charset(&iov, &iovlen, optarg) == -1) 134 err(EX_OSERR, "cd9660_iconv"); 135 build_iovec(&iov, &iovlen, "kiconv", NULL, (size_t)-1); 136 break; 137 case '?': 138 default: 139 usage(); 140 } 141 argc -= optind; 142 argv += optind; 143 144 if (argc != 2) 145 usage(); 146 147 dev = argv[0]; 148 dir = argv[1]; 149 150 /* 151 * Resolve the mountpoint with realpath(3) and remove unnecessary 152 * slashes from the devicename if there are any. 153 */ 154 if (checkpath(dir, mntpath) != 0) 155 err(1, "%s", mntpath); 156 (void)rmslashes(dev, dev); 157 158 if (ssector == -1) { 159 /* 160 * The start of the session has not been specified on 161 * the command line. If we can successfully read the 162 * TOC of a CD-ROM, use the last data track we find. 163 * Otherwise, just use 0, in order to mount the very 164 * first session. This is compatible with the 165 * historic behaviour of mount_cd9660(8). If the user 166 * has specified -s <ssector> above, we don't get here 167 * and leave the user's will. 168 */ 169 if ((ssector = get_ssector(dev)) == -1) { 170 if (verbose) 171 printf("could not determine starting sector, " 172 "using very first session\n"); 173 ssector = 0; 174 } else if (verbose) 175 printf("using starting sector %d\n", ssector); 176 } 177 mntflags |= MNT_RDONLY; 178 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1); 179 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1); 180 build_iovec(&iov, &iovlen, "from", dev, (size_t)-1); 181 build_iovec_argf(&iov, &iovlen, "ssector", "%d", ssector); 182 183 if (nmount(iov, iovlen, mntflags) < 0) 184 err(1, "%s", dev); 185 exit(0); 186} 187 188void 189usage(void) 190{ 191 (void)fprintf(stderr, 192"usage: mount_cd9660 [-begjrv] [-C charset] [-o options] [-s startsector]\n" 193" special node\n"); 194 exit(EX_USAGE); 195} 196 197static int 198get_ssector(const char *dev) 199{ 200 struct ioc_toc_header h; 201 struct ioc_read_toc_entry t; 202 struct cd_toc_entry toc_buffer[100]; 203 int fd, ntocentries, i; 204 205 if ((fd = open(dev, O_RDONLY)) == -1) 206 return -1; 207 if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) { 208 close(fd); 209 return -1; 210 } 211 212 ntocentries = h.ending_track - h.starting_track + 1; 213 if (ntocentries > 100) { 214 /* unreasonable, only 100 allowed */ 215 close(fd); 216 return -1; 217 } 218 t.address_format = CD_LBA_FORMAT; 219 t.starting_track = 0; 220 t.data_len = ntocentries * sizeof(struct cd_toc_entry); 221 t.data = toc_buffer; 222 223 if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) { 224 close(fd); 225 return -1; 226 } 227 close(fd); 228 229 for (i = ntocentries - 1; i >= 0; i--) 230 if ((toc_buffer[i].control & 4) != 0) 231 /* found a data track */ 232 break; 233 if (i < 0) 234 return -1; 235 236 return ntohl(toc_buffer[i].addr.lba); 237} 238 239static int 240set_charset(struct iovec **iov, int *iovlen, const char *localcs) 241{ 242 int error; 243 char *cs_disk; /* disk charset for Joliet cs conversion */ 244 char *cs_local; /* local charset for Joliet cs conversion */ 245 246 cs_disk = NULL; 247 cs_local = NULL; 248 249 if (modfind("cd9660_iconv") < 0) 250 if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) { 251 warnx( "cannot find or load \"cd9660_iconv\" kernel module"); 252 return (-1); 253 } 254 255 if ((cs_disk = malloc(ICONV_CSNMAXLEN)) == NULL) 256 return (-1); 257 if ((cs_local = malloc(ICONV_CSNMAXLEN)) == NULL) { 258 free(cs_disk); 259 return (-1); 260 } 261 strncpy(cs_disk, ENCODING_UNICODE, ICONV_CSNMAXLEN); 262 strncpy(cs_local, kiconv_quirkcs(localcs, KICONV_VENDOR_MICSFT), 263 ICONV_CSNMAXLEN); 264 error = kiconv_add_xlat16_cspairs(cs_disk, cs_local); 265 if (error) 266 return (-1); 267 268 build_iovec(iov, iovlen, "cs_disk", cs_disk, (size_t)-1); 269 build_iovec(iov, iovlen, "cs_local", cs_local, (size_t)-1); 270 271 return (0); 272} 273