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/* $NetBSD: main.c,v 1.1 2002/05/29 19:39:07 drochner Exp $ */
/*
* Copyright (c) 2002
* Matthias Drochner. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
/*
* Generate an in-core disklabel for a CD, containing entries for
* previous data tracks (supposed to be of previous sessions).
* TODO:
* - check ISO9660 volume descriptor, print volume labels, perhaps
* allow selection by creation date
* - support simulation of multisession CDs in a vnd(4) disk
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/cdio.h>
#include <sys/disklabel.h>
#include <sys/param.h>
#include <err.h>
#include <util.h>
#include <string.h>
#include "dkcksum.h"
int main(int, char **);
char *disk = "cd0";
int
main(argc, argv)
int argc;
char **argv;
{
int fd, res, i, j, rawpart;
char fullname[MAXPATHLEN];
struct ioc_toc_header th;
struct ioc_read_toc_entry te;
int ntracks;
size_t tocbufsize;
struct cd_toc_entry *tocbuf, *track;
struct disklabel label;
struct partition *p;
if (argc > 1)
disk = argv[1];
fd = opendisk(disk, O_RDWR, fullname, MAXPATHLEN, 0);
if (fd < 0)
err(1, "opendisk %s", disk);
/*
* get the TOC
*/
memset(&th, 0, sizeof(th));
res = ioctl(fd, CDIOREADTOCHEADER, &th);
if (res < 0)
err(2, "CDIOREADTOCHEADER");
ntracks = th.ending_track - th.starting_track + 1;
tocbufsize = ntracks * sizeof(struct cd_toc_entry);
tocbuf = malloc(tocbufsize);
if (!tocbuf)
err(3, "alloc TOC buffer");
memset(&te, 0, sizeof(te));
te.address_format = CD_LBA_FORMAT;
te.starting_track = th.starting_track; /* always 1 ??? */
te.data_len = tocbufsize;
te.data = tocbuf;
res = ioctl(fd, CDIOREADTOCENTRIES, &te);
if (res < 0)
err(4, "CDIOREADTOCENTRIES");
/* get label template */
res = ioctl(fd, DIOCGDINFO, &label);
if (res < 0)
err(5, "DIOCGDINFO");
/*
* We want entries for the sessions beginning with the most recent
* one, in reversed time order.
* We don't have session information here, but it is uncommon
* to have more than one data track in one session, so we get
* the same result.
*/
rawpart = getrawpartition();
i = ntracks;
j = 0;
while (--i >= 0 && j < MAXPARTITIONS) {
track = &tocbuf[i];
printf("track (ctl=%d) at sector %d\n", track->control,
track->addr.lba);
if (track->control & 4) { /* data track */
printf(" adding as '%c'\n", 'a' + j);
p = &label.d_partitions[j];
memset(p, 0, sizeof(struct partition));
p->p_size = label.d_partitions[rawpart].p_size;
p->p_fstype = FS_ISO9660;
p->p_cdsession = track->addr.lba;
if (++j == rawpart)
j++;
}
}
if (label.d_npartitions < j)
label.d_npartitions = j;
strncpy(label.d_packname, "mscdlabel's", 16);
/* write back label */
label.d_checksum = 0;
label.d_checksum = dkcksum(&label);
res = ioctl(fd, DIOCSDINFO, &label);
if (res < 0)
err(6, "DIOCSDINFO");
free(tocbuf);
close(fd);
return (0);
}
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