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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 39 * 40 * @(#) Copyright (c) 1992, 1993, 1994 The Regents of the University of California. All rights reserved. 41 * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 42 * $FreeBSD: src/sbin/mount_cd9660/mount_cd9660.c,v 1.15.2.3 2001/03/14 12:05:01 bp Exp $ 43 * $DragonFly: src/sbin/mount_cd9660/mount_cd9660.c,v 1.5 2005/04/02 21:43:15 dillon Exp $ 44 */ 45 46 #include <sys/cdio.h> 47 #include <sys/file.h> 48 #include <sys/param.h> 49 #include <sys/mount.h> 50 #include <sys/iconv.h> 51 #include <sys/linker.h> 52 #include <sys/module.h> 53 #include <vfs/isofs/cd9660/cd9660_mount.h> 54 55 #include <err.h> 56 #include <errno.h> 57 #include <stdlib.h> 58 #include <stdio.h> 59 #include <string.h> 60 #include <locale.h> 61 #include <sysexits.h> 62 #include <unistd.h> 63 64 #include "mntopts.h" 65 66 struct mntopt mopts[] = { 67 MOPT_STDOPTS, 68 MOPT_UPDATE, 69 { "extatt", 0, ISOFSMNT_EXTATT, 1 }, 70 { "gens", 0, ISOFSMNT_GENS, 1 }, 71 { "rrip", 1, ISOFSMNT_NORRIP, 1 }, 72 { "joliet", 1, ISOFSMNT_NOJOLIET, 1 }, 73 { "strictjoliet", 1, ISOFSMNT_BROKENJOLIET, 1 }, 74 MOPT_NULL 75 }; 76 77 static int get_ssector(const char *dev); 78 static void usage(void); 79 int set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk); 80 81 int 82 main(int argc, char **argv) 83 { 84 struct iso_args args; 85 int ch, mntflags, opts; 86 char *dev, *dir, mntpath[MAXPATHLEN]; 87 struct vfsconf vfc; 88 int error, verbose; 89 const char *quirk; 90 char *cs_local = NULL; 91 92 mntflags = opts = verbose = 0; 93 memset(&args, 0, sizeof args); 94 args.ssector = -1; 95 while ((ch = getopt(argc, argv, "begjo:rs:C:v")) != -1) 96 switch (ch) { 97 case 'b': 98 opts |= ISOFSMNT_BROKENJOLIET; 99 break; 100 case 'e': 101 opts |= ISOFSMNT_EXTATT; 102 break; 103 case 'g': 104 opts |= ISOFSMNT_GENS; 105 break; 106 case 'j': 107 opts |= ISOFSMNT_NOJOLIET; 108 break; 109 case 'C': 110 quirk = kiconv_quirkcs(optarg, KICONV_VENDOR_MICSFT); 111 cs_local = strdup(quirk); 112 if (set_charset(&args, cs_local, NULL) == -1) 113 err(EX_OSERR, "cd9660_iconv"); 114 opts |= ISOFSMNT_KICONV; 115 break; 116 case 'o': 117 getmntopts(optarg, mopts, &mntflags, &opts); 118 break; 119 case 'r': 120 opts |= ISOFSMNT_NORRIP; 121 break; 122 case 's': 123 args.ssector = atoi(optarg); 124 break; 125 case 'v': 126 verbose++; 127 break; 128 case '?': 129 default: 130 usage(); 131 } 132 argc -= optind; 133 argv += optind; 134 135 if (argc != 2) 136 usage(); 137 138 dev = argv[0]; 139 dir = argv[1]; 140 141 /* 142 * Resolve the mountpoint with realpath(3) and remove unnecessary 143 * slashes from the devicename if there are any. 144 */ 145 checkpath(dir, mntpath); 146 rmslashes(dev, dev); 147 148 #define DEFAULT_ROOTUID -2 149 /* 150 * ISO 9660 filesystems are not writeable. 151 */ 152 mntflags |= MNT_RDONLY; 153 args.export.ex_flags = MNT_EXRDONLY; 154 args.fspec = dev; 155 args.export.ex_root = DEFAULT_ROOTUID; 156 args.flags = opts; 157 158 if (args.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 ((args.ssector = get_ssector(dev)) == -1) { 170 if (verbose) 171 printf("could not determine starting sector, " 172 "using very first session\n"); 173 args.ssector = 0; 174 } else if (verbose) 175 printf("using starting sector %d\n", args.ssector); 176 } 177 178 error = getvfsbyname("cd9660", &vfc); 179 if (error && vfsisloadable("cd9660")) { 180 if (vfsload("cd9660")) 181 err(EX_OSERR, "vfsload(cd9660)"); 182 endvfsent(); /* flush cache */ 183 error = getvfsbyname("cd9660", &vfc); 184 } 185 if (error) 186 errx(1, "cd9660 filesystem is not available"); 187 188 if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0) 189 err(1, "%s", args.fspec); 190 exit(0); 191 } 192 193 int 194 set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk) 195 { 196 int error; 197 if (modfind("cd9660_iconv") < 0) { 198 if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) 199 { 200 warnx("cannot find or load \"cd9660_iconv\" kernel module"); 201 return (-1); 202 } 203 } 204 snprintf(args->cs_local, ICONV_CSNMAXLEN, "%s", cs_local); 205 error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); 206 if (error) 207 return (-1); 208 if (!cs_disk) 209 cs_disk = strdup(ENCODING_UNICODE); 210 snprintf(args->cs_disk, ICONV_CSNMAXLEN, "%s", cs_disk); 211 error = kiconv_add_xlat16_cspairs(cs_disk, cs_local); 212 if (error) 213 return (-1); 214 return (0); 215 } 216 217 218 static void 219 usage(void) 220 { 221 fprintf(stderr, 222 "usage: mount_cd9660 [-egrv] [-C charset] [-o options] [-s startsector] special node\n"); 223 exit(EX_USAGE); 224 } 225 226 static int 227 get_ssector(const char *dev) 228 { 229 struct ioc_toc_header h; 230 struct ioc_read_toc_entry t; 231 struct cd_toc_entry toc_buffer[100]; 232 int fd, ntocentries, i; 233 234 if ((fd = open(dev, O_RDONLY)) == -1) 235 return -1; 236 if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) { 237 close(fd); 238 return -1; 239 } 240 241 ntocentries = h.ending_track - h.starting_track + 1; 242 if (ntocentries > 100) { 243 /* unreasonable, only 100 allowed */ 244 close(fd); 245 return -1; 246 } 247 t.address_format = CD_LBA_FORMAT; 248 t.starting_track = 0; 249 t.data_len = ntocentries * sizeof(struct cd_toc_entry); 250 t.data = toc_buffer; 251 252 if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) { 253 close(fd); 254 return -1; 255 } 256 close(fd); 257 258 for (i = ntocentries - 1; i >= 0; i--) 259 if ((toc_buffer[i].control & 4) != 0) 260 /* found a data track */ 261 break; 262 if (i < 0) 263 return -1; 264 265 return ntohl(toc_buffer[i].addr.lba); 266 } 267