/* * 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 * $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 #include #include #include 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 gid_t a_gid(const char *); static uid_t a_uid(const char *); static mode_t a_mask(const char *); static int set_charset(struct iso_args *args, const char *cs_local); static int get_ssector(const char *dev); static void usage(void); int main(int argc, char **argv) { struct stat sb; struct iso_args args; int ch, mntflags, opts, set_mask, set_dirmask; char *dev, *dir, mntpath[MAXPATHLEN]; struct vfsconf vfc; int error, verbose; const char *cs_local; mntflags = opts = set_mask = set_dirmask = verbose = 0; memset(&args, 0, sizeof args); args.ssector = -1; while ((ch = getopt(argc, argv, "bC:egG:jm:M:o:rs:U:v")) != -1) switch (ch) { case 'b': opts |= ISOFSMNT_BROKENJOLIET; break; case 'C': cs_local = kiconv_quirkcs(optarg, KICONV_VENDOR_MICSFT); if (set_charset(&args, cs_local) == -1) err(EX_OSERR, "cd9660_iconv"); opts |= ISOFSMNT_KICONV; break; case 'e': opts |= ISOFSMNT_EXTATT; break; case 'g': opts |= ISOFSMNT_GENS; break; case 'G': opts |= ISOFSMNT_GID; args.gid = a_gid(optarg); break; case 'j': opts |= ISOFSMNT_NOJOLIET; break; case 'm': args.fmask = a_mask(optarg); set_mask = 1; break; case 'M': args.dmask = a_mask(optarg); set_dirmask = 1; break; case 'o': getmntopts(optarg, mopts, &mntflags, &opts); break; case 'r': opts |= ISOFSMNT_NORRIP; break; case 's': args.ssector = atoi(optarg); break; case 'U': opts |= ISOFSMNT_UID; args.uid = a_uid(optarg); break; case 'v': verbose++; break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 2) usage(); if (set_mask && !set_dirmask) { args.dmask = args.fmask; set_dirmask = 1; } else if (set_dirmask && !set_mask) { args.fmask = args.dmask; set_mask = 1; } dev = argv[0]; dir = argv[1]; /* * 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); } if (!set_mask) { if (stat(mntpath, &sb) == -1) err(EX_OSERR, "stat %s", mntpath); args.fmask = args.dmask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); } 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); exit(0); } static int set_charset(struct iso_args *args, const char *cs_local) { 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_disk, sizeof(args->cs_disk), "%s", ENCODING_UNICODE); snprintf(args->cs_local, sizeof(args->cs_local), "%s", cs_local); if (kiconv_add_xlat16_cspairs(args->cs_disk, args->cs_local) != 0) return (-1); return (0); } static void usage(void) { fprintf(stderr, "usage: mount_cd9660 [-begjrv] [-C charset] [-G gid] [-m mask]\n" " [-M mask] [-o options] [-s startsector]\n" " [-U uid] 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); } static gid_t a_gid(const char *s) { struct group *gr; const char *gname; gid_t gid; if ((gr = getgrnam(s)) != NULL) { gid = gr->gr_gid; } else { for (gname = s; *s && isdigit(*s); ++s) ; if (!*s) gid = atoi(gname); else errx(EX_NOUSER, "unknown group id: %s", gname); } return (gid); } static uid_t a_uid(const char *s) { struct passwd *pw; const char *uname; uid_t uid; if ((pw = getpwnam(s)) != NULL) { uid = pw->pw_uid; } else { for (uname = s; *s && isdigit(*s); ++s) ; if (!*s) uid = atoi(uname); else errx(EX_NOUSER, "unknown user id: %s", uname); } return (uid); } static mode_t a_mask(const char *s) { int done, rv; char *ep; done = 0; rv = -1; if (*s >= '0' && *s <= '7') { done = 1; rv = strtol(optarg, &ep, 8); } if (!done || rv < 0 || *ep) errx(EX_USAGE, "invalid file mode: %s", s); return (rv); }