144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/* $NetBSD: main.c,v 1.1 2002/05/29 19:39:07 drochner Exp $ */
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/*
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* Copyright (c) 2002
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* Matthias Drochner. All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* Generate an in-core disklabel for a CD, containing entries for
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* previous data tracks (supposed to be of previous sessions).
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* TODO:
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* - check ISO9660 volume descriptor, print volume labels, perhaps
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* allow selection by creation date
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* - support simulation of multisession CDs in a vnd(4) disk
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/cdio.h>
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#include <sys/disklabel.h>
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#include <sys/param.h>
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#include <err.h>
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#include <util.h>
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#include <string.h>
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#include "dkcksum.h"
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int main(int, char **);
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char *disk = "cd0";
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int fd, res, i, j, rawpart;
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char fullname[MAXPATHLEN];
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struct ioc_toc_header th;
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struct ioc_read_toc_entry te;
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int ntracks;
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size_t tocbufsize;
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struct cd_toc_entry *tocbuf, *track;
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struct disklabel label;
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struct partition *p;
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if (argc > 1)
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disk = argv[1];
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fd = opendisk(disk, O_RDWR, fullname, MAXPATHLEN, 0);
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if (fd < 0)
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err(1, "opendisk %s", disk);
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/*
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* get the TOC
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*/
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memset(&th, 0, sizeof(th));
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res = ioctl(fd, CDIOREADTOCHEADER, &th);
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if (res < 0)
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err(2, "CDIOREADTOCHEADER");
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ntracks = th.ending_track - th.starting_track + 1;
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tocbufsize = ntracks * sizeof(struct cd_toc_entry);
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tocbuf = malloc(tocbufsize);
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if (!tocbuf)
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err(3, "alloc TOC buffer");
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memset(&te, 0, sizeof(te));
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te.address_format = CD_LBA_FORMAT;
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te.starting_track = th.starting_track; /* always 1 ??? */
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te.data_len = tocbufsize;
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te.data = tocbuf;
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res = ioctl(fd, CDIOREADTOCENTRIES, &te);
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if (res < 0)
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err(4, "CDIOREADTOCENTRIES");
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/* get label template */
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res = ioctl(fd, DIOCGDINFO, &label);
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if (res < 0)
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err(5, "DIOCGDINFO");
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/*
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* We want entries for the sessions beginning with the most recent
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* one, in reversed time order.
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* We don't have session information here, but it is uncommon
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* to have more than one data track in one session, so we get
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* the same result.
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*/
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rawpart = getrawpartition();
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i = ntracks;
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j = 0;
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while (--i >= 0 && j < MAXPARTITIONS) {
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track = &tocbuf[i];
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printf("track (ctl=%d) at sector %d\n", track->control,
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track->addr.lba);
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if (track->control & 4) { /* data track */
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printf(" adding as '%c'\n", 'a' + j);
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p = &label.d_partitions[j];
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memset(p, 0, sizeof(struct partition));
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p->p_size = label.d_partitions[rawpart].p_size;
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p->p_fstype = FS_ISO9660;
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p->p_cdsession = track->addr.lba;
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if (++j == rawpart)
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j++;
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}
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}
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if (label.d_npartitions < j)
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label.d_npartitions = j;
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strncpy(label.d_packname, "mscdlabel's", 16);
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/* write back label */
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label.d_checksum = 0;
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label.d_checksum = dkcksum(&label);
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res = ioctl(fd, DIOCSDINFO, &label);
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if (res < 0)
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err(6, "DIOCSDINFO");
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free(tocbuf);
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close(fd);
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return (0);
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}
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