268 lines
7.1 KiB
C
268 lines
7.1 KiB
C
/*
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$Id: freebsd_ioctl.c,v 1.3 2005/01/27 04:00:48 rocky Exp $
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Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* This file contains FreeBSD-specific code and implements low-level
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control of the CD drive. Culled initially I think from xine's or
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mplayer's FreeBSD code with lots of modifications.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static const char _rcsid[] = "$Id: freebsd_ioctl.c,v 1.3 2005/01/27 04:00:48 rocky Exp $";
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#ifdef HAVE_FREEBSD_CDROM
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#include "freebsd.h"
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/* Check a drive to see if it is a CD-ROM
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Return 1 if a CD-ROM. 0 if it exists but isn't a CD-ROM drive
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and -1 if no device exists .
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*/
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bool
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cdio_is_cdrom_freebsd_ioctl(char *drive, char *mnttype)
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{
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bool is_cd=false;
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int cdfd;
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struct ioc_toc_header tochdr;
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/* If it doesn't exist, return -1 */
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if ( !cdio_is_device_quiet_generic(drive) ) {
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return(false);
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}
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/* If it does exist, verify that it's an available CD-ROM */
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cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0);
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/* Should we want to test the condition in more detail:
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ENOENT is the error for /dev/xxxxx does not exist;
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ENODEV means there's no drive present. */
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if ( cdfd >= 0 ) {
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if ( ioctl(cdfd, CDIOREADTOCHEADER, &tochdr) != -1 ) {
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is_cd = true;
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}
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close(cdfd);
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}
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/* Even if we can't read it, it might be mounted */
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else if ( mnttype && (strcmp(mnttype, "iso9660") == 0) ) {
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is_cd = true;
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}
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return(is_cd);
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}
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/*!
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Reads a single mode2 sector from cd device into data starting from lsn.
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Returns 0 if no error.
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*/
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int
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read_audio_sectors_freebsd_ioctl (_img_private_t *_obj, void *data, lsn_t lsn,
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unsigned int nblocks)
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{
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unsigned char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
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struct ioc_read_audio cdda;
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cdda.address.lba = lsn;
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cdda.buffer = buf;
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cdda.nframes = nblocks;
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cdda.address_format = CDIO_CDROM_LBA;
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/* read a frame */
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if(ioctl(_obj->gen.fd, CDIOCREADAUDIO, &cdda) < 0) {
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perror("CDIOCREADAUDIO");
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return 1;
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}
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memcpy (data, buf, CDIO_CD_FRAMESIZE_RAW);
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return 0;
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}
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/*!
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Reads a single mode2 sector from cd device into data starting
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from lsn. Returns 0 if no error.
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*/
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int
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read_mode2_sector_freebsd_ioctl (_img_private_t *env, void *data, lsn_t lsn,
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bool b_form2)
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{
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char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
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int retval;
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if ( !b_form2 )
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return cdio_generic_read_form1_sector (env, buf, lsn);
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if ( (retval = read_audio_sectors_freebsd_ioctl (env, buf, lsn, 1)) )
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return retval;
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memcpy (data, buf + CDIO_CD_XA_SYNC_HEADER, M2RAW_SECTOR_SIZE);
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return 0;
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}
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/*!
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Return the size of the CD in logical block address (LBA) units.
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*/
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lsn_t
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get_disc_last_lsn_freebsd_ioctl (_img_private_t *_obj)
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{
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struct ioc_read_toc_single_entry tocent;
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uint32_t size;
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tocent.track = CDIO_CDROM_LEADOUT_TRACK;
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tocent.address_format = CDIO_CDROM_LBA;
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if (ioctl (_obj->gen.fd, CDIOREADTOCENTRY, &tocent) == -1)
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{
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perror ("ioctl(CDROMREADTOCENTRY)");
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exit (EXIT_FAILURE);
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}
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size = tocent.entry.addr.lba;
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return size;
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}
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/*!
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Eject media. Return 1 if successful, 0 otherwise.
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*/
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int
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eject_media_freebsd_ioctl (_img_private_t *env)
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{
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_img_private_t *_obj = env;
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int ret=2;
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int fd;
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if ((fd = open(_obj->gen.source_name, O_RDONLY|O_NONBLOCK)) > -1) {
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ret = 1;
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if (ioctl(fd, CDIOCALLOW) == -1) {
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cdio_warn("ioctl(fd, CDIOCALLOW) failed: %s\n", strerror(errno));
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} else if (ioctl(fd, CDIOCEJECT) == -1) {
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cdio_warn("ioctl(CDIOCEJECT) failed: %s\n", strerror(errno));
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} else {
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ret = 0;
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}
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close(fd);
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}
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return ret;
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}
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/*!
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Return the media catalog number MCN.
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Note: string is malloc'd so caller should free() then returned
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string when done with it.
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FIXME: This is just a guess.
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*/
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char *
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get_mcn_freebsd_ioctl (const _img_private_t *env) {
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struct ioc_read_subchannel subchannel;
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struct cd_sub_channel_info subchannel_info;
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subchannel.address_format = CDIO_CDROM_MSF;
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subchannel.data_format = CDIO_SUBCHANNEL_MEDIA_CATALOG;
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subchannel.track = 0;
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subchannel.data_len = sizeof(subchannel_info);
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subchannel.data = &subchannel_info;
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if(ioctl(env->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) {
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perror("CDIOCREADSUBCHANNEL");
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return NULL;
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}
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/* Probably need a loop over tracks rather than give up if we
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can't find in track 0.
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*/
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if (subchannel_info.what.media_catalog.mc_valid)
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return strdup(subchannel_info.what.media_catalog.mc_number);
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else
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return NULL;
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}
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/*!
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Get format of track.
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FIXME: We're just guessing this from the GNU/Linux code.
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*/
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track_format_t
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get_track_format_freebsd_ioctl(const _img_private_t *env, track_t i_track)
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{
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struct ioc_read_subchannel subchannel;
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struct cd_sub_channel_info subchannel_info;
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subchannel.address_format = CDIO_CDROM_LBA;
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subchannel.data_format = CDIO_SUBCHANNEL_CURRENT_POSITION;
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subchannel.track = i_track;
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subchannel.data_len = 1;
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subchannel.data = &subchannel_info;
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if(ioctl(env->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) {
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perror("CDIOCREADSUBCHANNEL");
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return 1;
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}
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if (subchannel_info.what.position.control == 0x04) {
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if (subchannel_info.what.position.data_format == 0x10)
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return TRACK_FORMAT_CDI;
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else if (subchannel_info.what.position.data_format == 0x20)
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return TRACK_FORMAT_XA;
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else
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return TRACK_FORMAT_DATA;
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} else
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return TRACK_FORMAT_AUDIO;
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}
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/*!
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Return true if we have XA data (green, mode2 form1) or
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XA data (green, mode2 form2). That is track begins:
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sync - header - subheader
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12 4 - 8
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FIXME: there's gotta be a better design for this and get_track_format?
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*/
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bool
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get_track_green_freebsd_ioctl(const _img_private_t *env, track_t i_track)
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{
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struct ioc_read_subchannel subchannel;
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struct cd_sub_channel_info subchannel_info;
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subchannel.address_format = CDIO_CDROM_LBA;
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subchannel.data_format = CDIO_SUBCHANNEL_CURRENT_POSITION;
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subchannel.track = i_track;
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subchannel.data_len = 1;
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subchannel.data = &subchannel_info;
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if(ioctl(env->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) {
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perror("CDIOCREADSUBCHANNEL");
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return 1;
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}
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/* FIXME: Dunno if this is the right way, but it's what
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I was using in cdinfo for a while.
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*/
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return (subchannel_info.what.position.control & 2) != 0;
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}
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#endif /* HAVE_FREEBSD_CDROM */
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