/*      $OpenBSD: mount_cd9660.c,v 1.23 2022/12/04 23:50:46 cheloha Exp $       */
/*      $NetBSD: mount_cd9660.c,v 1.3 1996/04/13 01:31:08 jtc Exp $     */

/*
 * 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.
 */

#include <sys/types.h>
#define CD9660
#include <sys/mount.h>

#include <err.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

#include "mntopts.h"

const struct mntopt mopts[] = {
        MOPT_STDOPTS,
        MOPT_UPDATE,
        { NULL }
};

void    usage(void);

int
main(int argc, char *argv[])
{
        struct iso_args args;
        int ch, mntflags, opts, sess = 0;
        char *dev, dir[PATH_MAX];
        const char *errstr;

        mntflags = opts = 0;
        while ((ch = getopt(argc, argv, "egjo:Rs:")) != -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);
                        break;
                case 'R':
                        opts |= ISOFSMNT_NORRIP;
                        break;
                case 's':
                        opts |= ISOFSMNT_SESS;
                        sess = strtonum(optarg, 0, INT32_MAX, &errstr);
                        if (errstr)
                                errx(1, "session number is %s: %s", errstr,
                                    optarg);
                        break;
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;

        if (argc != 2)
                usage();

        dev = argv[0];
        if (realpath(argv[1], dir) == NULL)
                err(1, "realpath %s", argv[1]);

#define DEFAULT_ROOTUID -2
        args.fspec = dev;
        args.export_info.ex_root = DEFAULT_ROOTUID;

        mntflags |= MNT_RDONLY;
        if (mntflags & MNT_RDONLY)
                args.export_info.ex_flags = MNT_EXRDONLY;
        else
                args.export_info.ex_flags = 0;
        args.flags = opts;
        args.sess = sess;

        if (mount(MOUNT_CD9660, dir, mntflags, &args) == -1) {
                if (errno == EOPNOTSUPP)
                        errx(1, "%s: Filesystem not supported by kernel", dir);
                else
                        err(1, "%s on %s", args.fspec, dir);
        }
        exit(0);
}

void
usage(void)
{
        (void)fprintf(stderr,
                "usage: mount_cd9660 [-egjR] [-o options] [-s offset] "
                "special node\n");
        exit(1);
}