remove all the code which was trying to do so. This code was nasty in several ways, it was hiding the kernel bug where the kernel was unable to properly load a module, and it was quitting if it wasn't able to load the module. The consequence is that an ABI breakage of the vfsconf API would have broken *every* mount utility.
228 lines
6.0 KiB
C
228 lines
6.0 KiB
C
/*
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley
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* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
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* Support code is derived from software contributed to Berkeley
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* by Atsushi Murai (amurai@spec.co.jp).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1992, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*
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static char sccsid[] = "@(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95";
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*/
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/cdio.h>
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#include <sys/file.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/../isofs/cd9660/cd9660_mount.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "mntopts.h"
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struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_UPDATE,
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{ "extatt", 0, ISOFSMNT_EXTATT, 1 },
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{ "gens", 0, ISOFSMNT_GENS, 1 },
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{ "rrip", 1, ISOFSMNT_NORRIP, 1 },
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{ "joliet", 1, ISOFSMNT_NOJOLIET, 1 },
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{ "strictjoliet", 1, ISOFSMNT_BROKENJOLIET, 1 },
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{ NULL }
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};
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int get_ssector(const char *dev);
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void usage(void);
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int
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main(int argc, char **argv)
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{
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struct iso_args args;
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int ch, mntflags, opts;
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char *dev, *dir, mntpath[MAXPATHLEN];
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int error, verbose;
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mntflags = opts = verbose = 0;
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memset(&args, 0, sizeof args);
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args.ssector = -1;
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while ((ch = getopt(argc, argv, "begjo:rs:v")) != -1)
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switch (ch) {
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case 'b':
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opts |= ISOFSMNT_BROKENJOLIET;
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break;
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case 'e':
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opts |= ISOFSMNT_EXTATT;
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break;
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case 'g':
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opts |= ISOFSMNT_GENS;
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break;
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case 'j':
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opts |= ISOFSMNT_NOJOLIET;
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break;
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case 'o':
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getmntopts(optarg, mopts, &mntflags, &opts);
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break;
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case 'r':
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opts |= ISOFSMNT_NORRIP;
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break;
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case 's':
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args.ssector = atoi(optarg);
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break;
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case 'v':
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verbose++;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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usage();
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dev = argv[0];
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dir = argv[1];
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/*
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* Resolve the mountpoint with realpath(3) and remove unnecessary
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* slashes from the devicename if there are any.
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*/
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(void)checkpath(dir, mntpath);
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(void)rmslashes(dev, dev);
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#define DEFAULT_ROOTUID -2
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/*
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* ISO 9660 filesystems are not writeable.
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*/
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mntflags |= MNT_RDONLY;
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args.export.ex_flags = MNT_EXRDONLY;
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args.fspec = dev;
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args.export.ex_root = DEFAULT_ROOTUID;
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args.flags = opts;
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if (args.ssector == -1) {
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/*
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* The start of the session has not been specified on
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* the command line. If we can successfully read the
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* TOC of a CD-ROM, use the last data track we find.
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* Otherwise, just use 0, in order to mount the very
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* first session. This is compatible with the
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* historic behaviour of mount_cd9660(8). If the user
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* has specified -s <ssector> above, we don't get here
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* and leave the user's will.
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*/
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if ((args.ssector = get_ssector(dev)) == -1) {
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if (verbose)
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printf("could not determine starting sector, "
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"using very first session\n");
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args.ssector = 0;
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} else if (verbose)
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printf("using starting sector %d\n", args.ssector);
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}
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if (mount("cd9660", mntpath, mntflags, &args) < 0)
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err(1, "%s", args.fspec);
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exit(0);
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}
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void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: mount_cd9660 [-egrv] [-o options] [-s startsector] special node\n");
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exit(EX_USAGE);
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}
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int
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get_ssector(const char *dev)
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{
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struct ioc_toc_header h;
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struct ioc_read_toc_entry t;
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struct cd_toc_entry toc_buffer[100];
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int fd, ntocentries, i;
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if ((fd = open(dev, O_RDONLY)) == -1)
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return -1;
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if (ioctl(fd, CDIOREADTOCHEADER, &h) == -1) {
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close(fd);
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return -1;
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}
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ntocentries = h.ending_track - h.starting_track + 1;
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if (ntocentries > 100) {
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/* unreasonable, only 100 allowed */
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close(fd);
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return -1;
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}
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t.address_format = CD_LBA_FORMAT;
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t.starting_track = 0;
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t.data_len = ntocentries * sizeof(struct cd_toc_entry);
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t.data = toc_buffer;
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if (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t) == -1) {
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close(fd);
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return -1;
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}
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close(fd);
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for (i = ntocentries - 1; i >= 0; i--)
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if ((toc_buffer[i].control & 4) != 0)
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/* found a data track */
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break;
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if (i < 0)
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return -1;
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return ntohl(toc_buffer[i].addr.lba);
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}
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