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 */ 44 45 #include <sys/cdio.h> 46 #include <sys/file.h> 47 #include <sys/param.h> 48 #include <sys/mount.h> 49 #include <sys/iconv.h> 50 #include <sys/linker.h> 51 #include <sys/module.h> 52 #include <vfs/isofs/cd9660/cd9660_mount.h> 53 54 #include <err.h> 55 #include <errno.h> 56 #include <mntopts.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 struct mntopt mopts[] = { 65 MOPT_STDOPTS, 66 MOPT_UPDATE, 67 { "extatt", 0, ISOFSMNT_EXTATT, 1 }, 68 { "gens", 0, ISOFSMNT_GENS, 1 }, 69 { "rrip", 1, ISOFSMNT_NORRIP, 1 }, 70 { "joliet", 1, ISOFSMNT_NOJOLIET, 1 }, 71 { "strictjoliet", 1, ISOFSMNT_BROKENJOLIET, 1 }, 72 MOPT_NULL 73 }; 74 75 static int get_ssector(const char *dev); 76 static void usage(void); 77 int set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk); 78 79 int 80 main(int argc, char **argv) 81 { 82 struct iso_args args; 83 int ch, mntflags, opts; 84 char *dev, *dir, mntpath[MAXPATHLEN]; 85 struct vfsconf vfc; 86 int error, verbose; 87 const char *quirk; 88 char *cs_local = NULL; 89 90 mntflags = opts = verbose = 0; 91 memset(&args, 0, sizeof args); 92 args.ssector = -1; 93 while ((ch = getopt(argc, argv, "begjo:rs:C:v")) != -1) 94 switch (ch) { 95 case 'b': 96 opts |= ISOFSMNT_BROKENJOLIET; 97 break; 98 case 'e': 99 opts |= ISOFSMNT_EXTATT; 100 break; 101 case 'g': 102 opts |= ISOFSMNT_GENS; 103 break; 104 case 'j': 105 opts |= ISOFSMNT_NOJOLIET; 106 break; 107 case 'C': 108 quirk = kiconv_quirkcs(optarg, KICONV_VENDOR_MICSFT); 109 cs_local = strdup(quirk); 110 if (set_charset(&args, cs_local, NULL) == -1) 111 err(EX_OSERR, "cd9660_iconv"); 112 opts |= ISOFSMNT_KICONV; 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 '?': 127 default: 128 usage(); 129 } 130 argc -= optind; 131 argv += optind; 132 133 if (argc != 2) 134 usage(); 135 136 dev = argv[0]; 137 dir = argv[1]; 138 139 /* 140 * Resolve the mountpoint with realpath(3) and remove unnecessary 141 * slashes from the devicename if there are any. 142 */ 143 checkpath(dir, mntpath); 144 rmslashes(dev, dev); 145 146 #define DEFAULT_ROOTUID -2 147 /* 148 * ISO 9660 filesystems are not writeable. 149 */ 150 mntflags |= MNT_RDONLY; 151 args.export.ex_flags = MNT_EXRDONLY; 152 args.fspec = dev; 153 args.export.ex_root = DEFAULT_ROOTUID; 154 args.flags = opts; 155 156 if (args.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 ((args.ssector = get_ssector(dev)) == -1) { 168 if (verbose) 169 printf("could not determine starting sector, " 170 "using very first session\n"); 171 args.ssector = 0; 172 } else if (verbose) 173 printf("using starting sector %d\n", args.ssector); 174 } 175 176 error = getvfsbyname("cd9660", &vfc); 177 if (error && vfsisloadable("cd9660")) { 178 if (vfsload("cd9660")) 179 err(EX_OSERR, "vfsload(cd9660)"); 180 endvfsent(); /* flush cache */ 181 error = getvfsbyname("cd9660", &vfc); 182 } 183 if (error) 184 errx(1, "cd9660 filesystem is not available"); 185 186 if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0) 187 err(1, "%s", args.fspec); 188 exit(0); 189 } 190 191 int 192 set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk) 193 { 194 int error; 195 if (modfind("cd9660_iconv") < 0) { 196 if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) 197 { 198 warnx("cannot find or load \"cd9660_iconv\" kernel module"); 199 return (-1); 200 } 201 } 202 snprintf(args->cs_local, ICONV_CSNMAXLEN, "%s", cs_local); 203 error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); 204 if (error) 205 return (-1); 206 if (!cs_disk) 207 cs_disk = strdup(ENCODING_UNICODE); 208 snprintf(args->cs_disk, ICONV_CSNMAXLEN, "%s", cs_disk); 209 error = kiconv_add_xlat16_cspairs(cs_disk, cs_local); 210 if (error) 211 return (-1); 212 return (0); 213 } 214 215 216 static void 217 usage(void) 218 { 219 fprintf(stderr, 220 "usage: mount_cd9660 [-egrv] [-C charset] [-o options] [-s startsector] special node\n"); 221 exit(EX_USAGE); 222 } 223 224 static int 225 get_ssector(const char *dev) 226 { 227 struct ioc_toc_header h; 228 struct ioc_read_toc_entry t; 229 struct cd_toc_entry toc_buffer[100]; 230 int fd, ntocentries, i; 231 232 if ((fd = open(dev, O_RDONLY)) == -1) 233 return -1; 234 if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) { 235 close(fd); 236 return -1; 237 } 238 239 ntocentries = h.ending_track - h.starting_track + 1; 240 if (ntocentries > 100) { 241 /* unreasonable, only 100 allowed */ 242 close(fd); 243 return -1; 244 } 245 t.address_format = CD_LBA_FORMAT; 246 t.starting_track = 0; 247 t.data_len = ntocentries * sizeof(struct cd_toc_entry); 248 t.data = toc_buffer; 249 250 if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) { 251 close(fd); 252 return -1; 253 } 254 close(fd); 255 256 for (i = ntocentries - 1; i >= 0; i--) 257 if ((toc_buffer[i].control & 4) != 0) 258 /* found a data track */ 259 break; 260 if (i < 0) 261 return -1; 262 263 return ntohl(toc_buffer[i].addr.lba); 264 } 265