/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1992, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
/*
static char sccsid[] = "@(#)mount_cd9660.c 8.7 (Berkeley) 5/1/95";
*/
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/cdio.h>
#include <sys/file.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/../isofs/cd9660/cd9660_mount.h>
#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "mntopts.h"
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 },
{ NULL }
};
int get_ssector(const char *dev);
void usage(void);
int
main(int argc, char **argv)
{
struct iso_args args;
int ch, mntflags, opts;
char *dev, *dir, mntpath[MAXPATHLEN];
struct vfsconf vfc;
int error, verbose;
mntflags = opts = verbose = 0;
memset(&args, 0, sizeof args);
args.ssector = -1;
while ((ch = getopt(argc, argv, "egjo:rs:v")) != -1)
switch (ch) {
case 'e':
opts |= ISOFSMNT_EXTATT;
break;
case 'g':
opts |= ISOFSMNT_GENS;
break;
case 'j':
opts |= ISOFSMNT_NOJOLIET;
break;
case 'o':
getmntopts(optarg, mopts, &mntflags, &opts);
break;
case 'r':
opts |= ISOFSMNT_NORRIP;
break;
case 's':
args.ssector = atoi(optarg);
break;
case 'v':
verbose++;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
dev = argv[0];
dir = argv[1];
/*
* Resolve the mountpoint with realpath(3) and remove unnecessary
* slashes from the devicename if there are any.
*/
(void)checkpath(dir, mntpath);
(void)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 <ssector> 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, NULL);
exit(0);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: mount_cd9660 [-egrv] [-o options] [-s startsector] special node\n");
exit(EX_USAGE);
}
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);
}
