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/../isofs/cd9660/cd9660_mount.h> 56 #include <sys/module.h> 57 #include <sys/iconv.h> 58 #include <sys/linker.h> 59 60 #include <arpa/inet.h> 61 62 #include <err.h> 63 #include <errno.h> 64 #include <stdlib.h> 65 #include <stdio.h> 66 #include <string.h> 67 #include <sysexits.h> 68 #include <unistd.h> 69 70 #include "mntopts.h" 71 72 struct mntopt mopts[] = { 73 MOPT_STDOPTS, 74 MOPT_UPDATE, 75 { "extatt", 0, ISOFSMNT_EXTATT, 1 }, 76 { "gens", 0, ISOFSMNT_GENS, 1 }, 77 { "rrip", 1, ISOFSMNT_NORRIP, 1 }, 78 { "joliet", 1, ISOFSMNT_NOJOLIET, 1 }, 79 { "strictjoliet", 1, ISOFSMNT_BROKENJOLIET, 1 }, 80 { NULL } 81 }; 82 83 int get_ssector(const char *dev); 84 int set_charset(struct iso_args *, const char *); 85 void usage(void); 86 87 int 88 main(int argc, char **argv) 89 { 90 struct iso_args args; 91 int ch, mntflags, opts; 92 char *dev, *dir, mntpath[MAXPATHLEN]; 93 int verbose; 94 95 mntflags = opts = verbose = 0; 96 memset(&args, 0, sizeof args); 97 args.ssector = -1; 98 args.cs_disk = NULL; 99 args.cs_local = NULL; 100 while ((ch = getopt(argc, argv, "begjo:rs:vC:")) != -1) 101 switch (ch) { 102 case 'b': 103 opts |= ISOFSMNT_BROKENJOLIET; 104 break; 105 case 'e': 106 opts |= ISOFSMNT_EXTATT; 107 break; 108 case 'g': 109 opts |= ISOFSMNT_GENS; 110 break; 111 case 'j': 112 opts |= ISOFSMNT_NOJOLIET; 113 break; 114 case 'o': 115 getmntopts(optarg, mopts, &mntflags, &opts); 116 break; 117 case 'r': 118 opts |= ISOFSMNT_NORRIP; 119 break; 120 case 's': 121 args.ssector = atoi(optarg); 122 break; 123 case 'v': 124 verbose++; 125 break; 126 case 'C': 127 if (set_charset(&args, optarg) == -1) 128 err(EX_OSERR, "cd9660_iconv"); 129 opts |= ISOFSMNT_KICONV; 130 break; 131 case '?': 132 default: 133 usage(); 134 } 135 argc -= optind; 136 argv += optind; 137 138 if (argc != 2) 139 usage(); 140 141 dev = argv[0]; 142 dir = argv[1]; 143 144 /* 145 * Resolve the mountpoint with realpath(3) and remove unnecessary 146 * slashes from the devicename if there are any. 147 */ 148 (void)checkpath(dir, mntpath); 149 (void)rmslashes(dev, dev); 150 151 #define DEFAULT_ROOTUID -2 152 /* 153 * ISO 9660 file systems are not writeable. 154 */ 155 mntflags |= MNT_RDONLY; 156 args.export.ex_flags = MNT_EXRDONLY; 157 args.fspec = dev; 158 args.export.ex_root = DEFAULT_ROOTUID; 159 args.flags = opts; 160 161 if (args.ssector == -1) { 162 /* 163 * The start of the session has not been specified on 164 * the command line. If we can successfully read the 165 * TOC of a CD-ROM, use the last data track we find. 166 * Otherwise, just use 0, in order to mount the very 167 * first session. This is compatible with the 168 * historic behaviour of mount_cd9660(8). If the user 169 * has specified -s <ssector> above, we don't get here 170 * and leave the user's will. 171 */ 172 if ((args.ssector = get_ssector(dev)) == -1) { 173 if (verbose) 174 printf("could not determine starting sector, " 175 "using very first session\n"); 176 args.ssector = 0; 177 } else if (verbose) 178 printf("using starting sector %d\n", args.ssector); 179 } 180 181 if (mount("cd9660", mntpath, mntflags, &args) < 0) 182 err(1, "%s", args.fspec); 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 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 int 238 set_charset(struct iso_args *args, const char *localcs) 239 { 240 int error; 241 242 if (modfind("cd9660_iconv") < 0) 243 if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) { 244 warnx( "cannot find or load \"cd9660_iconv\" kernel module"); 245 return (-1); 246 } 247 248 if ((args->cs_disk = malloc(ICONV_CSNMAXLEN)) == NULL) 249 return (-1); 250 if ((args->cs_local = malloc(ICONV_CSNMAXLEN)) == NULL) 251 return (-1); 252 strncpy(args->cs_disk, ENCODING_UNICODE, ICONV_CSNMAXLEN); 253 strncpy(args->cs_local, kiconv_quirkcs(localcs, KICONV_VENDOR_MICSFT), 254 ICONV_CSNMAXLEN); 255 error = kiconv_add_xlat16_cspairs(args->cs_disk, args->cs_local); 256 if (error) 257 return (-1); 258 259 return (0); 260 } 261