1 /* 2 * Copyright (c) 1992, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1992, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 /* 45 static char sccsid[] = "@(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95"; 46 */ 47 static const char rcsid[] = 48 "$FreeBSD$"; 49 #endif /* not lint */ 50 51 #include <sys/cdio.h> 52 #include <sys/file.h> 53 #include <sys/param.h> 54 #include <sys/mount.h> 55 #include <sys/module.h> 56 #include <sys/iconv.h> 57 #include <sys/linker.h> 58 59 #include <arpa/inet.h> 60 61 #include <err.h> 62 #include <errno.h> 63 #include <stdlib.h> 64 #include <stdio.h> 65 #include <string.h> 66 #include <sysexits.h> 67 #include <unistd.h> 68 69 #include "mntopts.h" 70 71 static struct mntopt mopts[] = { 72 MOPT_STDOPTS, 73 MOPT_UPDATE, 74 MOPT_END 75 }; 76 77 static int get_ssector(const char *dev); 78 static int set_charset(struct iovec **, int *iovlen, const char *); 79 void usage(void); 80 81 int 82 main(int argc, char **argv) 83 { 84 struct iovec *iov; 85 int iovlen; 86 int ch, mntflags; 87 char *dev, *dir, *p, *val, mntpath[MAXPATHLEN]; 88 int verbose; 89 int ssector; /* starting sector, 0 for 1st session */ 90 char fstype[] = "cd9660"; 91 92 iov = NULL; 93 iovlen = 0; 94 mntflags = verbose = 0; 95 ssector = -1; 96 97 while ((ch = getopt(argc, argv, "begjo:rs:vC:")) != -1) 98 switch (ch) { 99 case 'b': 100 build_iovec(&iov, &iovlen, "brokenjoliet", NULL, (size_t)-1); 101 break; 102 case 'e': 103 build_iovec(&iov, &iovlen, "extatt", NULL, (size_t)-1); 104 break; 105 case 'g': 106 build_iovec(&iov, &iovlen, "gens", NULL, (size_t)-1); 107 break; 108 case 'j': 109 build_iovec(&iov, &iovlen, "nojoliet", NULL, (size_t)-1); 110 break; 111 case 'o': 112 getmntopts(optarg, mopts, &mntflags, NULL); 113 p = strchr(optarg, '='); 114 val = NULL; 115 if (p != NULL) { 116 *p = '\0'; 117 val = p + 1; 118 } 119 build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); 120 break; 121 case 'r': 122 build_iovec(&iov, &iovlen, "norrip", NULL, (size_t)-1); 123 break; 124 case 's': 125 ssector = atoi(optarg); 126 break; 127 case 'v': 128 verbose++; 129 break; 130 case 'C': 131 if (set_charset(&iov, &iovlen, optarg) == -1) 132 err(EX_OSERR, "cd9660_iconv"); 133 build_iovec(&iov, &iovlen, "kiconv", NULL, (size_t)-1); 134 break; 135 case '?': 136 default: 137 usage(); 138 } 139 argc -= optind; 140 argv += optind; 141 142 if (argc != 2) 143 usage(); 144 145 dev = argv[0]; 146 dir = argv[1]; 147 148 /* 149 * Resolve the mountpoint with realpath(3) and remove unnecessary 150 * slashes from the devicename if there are any. 151 */ 152 if (checkpath(dir, mntpath) != 0) 153 err(1, "%s", mntpath); 154 (void)rmslashes(dev, dev); 155 156 if (ssector == -1) { 157 /* 158 * The start of the session has not been specified on 159 * the command line. If we can successfully read the 160 * TOC of a CD-ROM, use the last data track we find. 161 * Otherwise, just use 0, in order to mount the very 162 * first session. This is compatible with the 163 * historic behaviour of mount_cd9660(8). If the user 164 * has specified -s <ssector> above, we don't get here 165 * and leave the user's will. 166 */ 167 if ((ssector = get_ssector(dev)) == -1) { 168 if (verbose) 169 printf("could not determine starting sector, " 170 "using very first session\n"); 171 ssector = 0; 172 } else if (verbose) 173 printf("using starting sector %d\n", ssector); 174 } 175 mntflags |= MNT_RDONLY; 176 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1); 177 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1); 178 build_iovec(&iov, &iovlen, "from", dev, (size_t)-1); 179 build_iovec_argf(&iov, &iovlen, "ssector", "%d", ssector); 180 181 if (nmount(iov, iovlen, mntflags) < 0) 182 err(1, "%s", dev); 183 exit(0); 184 } 185 186 void 187 usage(void) 188 { 189 (void)fprintf(stderr, 190 "usage: mount_cd9660 [-begjrv] [-C charset] [-o options] [-s startsector]\n" 191 " special node\n"); 192 exit(EX_USAGE); 193 } 194 195 static int 196 get_ssector(const char *dev) 197 { 198 struct ioc_toc_header h; 199 struct ioc_read_toc_entry t; 200 struct cd_toc_entry toc_buffer[100]; 201 int fd, ntocentries, i; 202 203 if ((fd = open(dev, O_RDONLY)) == -1) 204 return -1; 205 if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) { 206 close(fd); 207 return -1; 208 } 209 210 ntocentries = h.ending_track - h.starting_track + 1; 211 if (ntocentries > 100) { 212 /* unreasonable, only 100 allowed */ 213 close(fd); 214 return -1; 215 } 216 t.address_format = CD_LBA_FORMAT; 217 t.starting_track = 0; 218 t.data_len = ntocentries * sizeof(struct cd_toc_entry); 219 t.data = toc_buffer; 220 221 if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) { 222 close(fd); 223 return -1; 224 } 225 close(fd); 226 227 for (i = ntocentries - 1; i >= 0; i--) 228 if ((toc_buffer[i].control & 4) != 0) 229 /* found a data track */ 230 break; 231 if (i < 0) 232 return -1; 233 234 return ntohl(toc_buffer[i].addr.lba); 235 } 236 237 static int 238 set_charset(struct iovec **iov, int *iovlen, const char *localcs) 239 { 240 int error; 241 char *cs_disk; /* disk charset for Joliet cs conversion */ 242 char *cs_local; /* local charset for Joliet cs conversion */ 243 244 cs_disk = NULL; 245 cs_local = NULL; 246 247 if (modfind("cd9660_iconv") < 0) 248 if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) { 249 warnx( "cannot find or load \"cd9660_iconv\" kernel module"); 250 return (-1); 251 } 252 253 if ((cs_disk = malloc(ICONV_CSNMAXLEN)) == NULL) 254 return (-1); 255 if ((cs_local = malloc(ICONV_CSNMAXLEN)) == NULL) { 256 free(cs_disk); 257 return (-1); 258 } 259 strncpy(cs_disk, ENCODING_UNICODE, ICONV_CSNMAXLEN); 260 strncpy(cs_local, kiconv_quirkcs(localcs, KICONV_VENDOR_MICSFT), 261 ICONV_CSNMAXLEN); 262 error = kiconv_add_xlat16_cspairs(cs_disk, cs_local); 263 if (error) 264 return (-1); 265 266 build_iovec(iov, iovlen, "cs_disk", cs_disk, (size_t)-1); 267 build_iovec(iov, iovlen, "cs_local", cs_local, (size_t)-1); 268 269 return (0); 270 } 271