/* * Copyright (c) 1992, 1993, 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension * Support code is derived from software contributed to Berkeley * by Atsushi Murai (amurai@spec.co.jp). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 * * @(#) Copyright (c) 1992, 1993, 1994 The Regents of the University of California. All rights reserved. * @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95 * $FreeBSD: src/sbin/mount_cd9660/mount_cd9660.c,v 1.15.2.3 2001/03/14 12:05:01 bp Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_UPDATE, { "extatt", 0, ISOFSMNT_EXTATT, 1 }, { "gens", 0, ISOFSMNT_GENS, 1 }, { "rrip", 1, ISOFSMNT_NORRIP, 1 }, { "joliet", 1, ISOFSMNT_NOJOLIET, 1 }, { "strictjoliet", 1, ISOFSMNT_BROKENJOLIET, 1 }, MOPT_NULL }; static int get_ssector(const char *dev); static void usage(void); int set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk); int mount_cd9660(char *dev, char *dir) { struct iso_args args; int ch, mntflags, opts; char mntpath[MAXPATHLEN]; struct vfsconf vfc; int error, verbose; const char *quirk; char *cs_local = NULL; mntflags = opts = verbose = 0; memset(&args, 0, sizeof args); args.ssector = 0; /* * Resolve the mountpoint with realpath(3) and remove unnecessary * slashes from the devicename if there are any. */ checkpath(dir, mntpath); rmslashes(dev, dev); #define DEFAULT_ROOTUID -2 /* * ISO 9660 filesystems are not writeable. */ mntflags |= MNT_RDONLY; args.export.ex_flags = MNT_EXRDONLY; args.fspec = dev; args.export.ex_root = DEFAULT_ROOTUID; args.flags = opts; if (args.ssector == -1) { /* * The start of the session has not been specified on * the command line. If we can successfully read the * TOC of a CD-ROM, use the last data track we find. * Otherwise, just use 0, in order to mount the very * first session. This is compatible with the * historic behaviour of mount_cd9660(8). If the user * has specified -s above, we don't get here * and leave the user's will. */ if ((args.ssector = get_ssector(dev)) == -1) { if (verbose) printf("could not determine starting sector, " "using very first session\n"); args.ssector = 0; } else if (verbose) printf("using starting sector %d\n", args.ssector); } error = getvfsbyname("cd9660", &vfc); if (error && vfsisloadable("cd9660")) { if (vfsload("cd9660")) err(EX_OSERR, "vfsload(cd9660)"); endvfsent(); /* flush cache */ error = getvfsbyname("cd9660", &vfc); } if (error) errx(1, "cd9660 filesystem is not available"); if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0) err(1, "%s", args.fspec); return 0; } int set_charset(struct iso_args *args, const char *cs_local, const char *cs_disk) { int error; if (modfind("cd9660_iconv") < 0) { if (kldload("cd9660_iconv") < 0 || modfind("cd9660_iconv") < 0) { warnx("cannot find or load \"cd9660_iconv\" kernel module"); return (-1); } } snprintf(args->cs_local, ICONV_CSNMAXLEN, "%s", cs_local); error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); if (error) return (-1); if (!cs_disk) cs_disk = strdup(ENCODING_UNICODE); snprintf(args->cs_disk, ICONV_CSNMAXLEN, "%s", cs_disk); error = kiconv_add_xlat16_cspairs(cs_disk, cs_local); if (error) return (-1); return (0); } static void usage(void) { fprintf(stderr, "usage: mount_cd9660 [-begjrv] [-C charset] [-o options] [-s startsector] special node\n"); exit(EX_USAGE); } static int get_ssector(const char *dev) { struct ioc_toc_header h; struct ioc_read_toc_entry t; struct cd_toc_entry toc_buffer[100]; int fd, ntocentries, i; if ((fd = open(dev, O_RDONLY)) == -1) return -1; if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) { close(fd); return -1; } ntocentries = h.ending_track - h.starting_track + 1; if (ntocentries > 100) { /* unreasonable, only 100 allowed */ close(fd); return -1; } t.address_format = CD_LBA_FORMAT; t.starting_track = 0; t.data_len = ntocentries * sizeof(struct cd_toc_entry); t.data = toc_buffer; if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) { close(fd); return -1; } close(fd); for (i = ntocentries - 1; i >= 0; i--) if ((toc_buffer[i].control & 4) != 0) /* found a data track */ break; if (i < 0) return -1; return ntohl(toc_buffer[i].addr.lba); }