/* $Id: freebsd.c,v 1.7 2004/05/04 04:42:17 rocky Exp $ Copyright (C) 2003, 2004 Rocky Bernstein This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* This file contains FreeBSD-specific code and implements low-level control of the CD drive. Culled initially I think from xine's or mplayer's FreeBSD code with lots of modifications. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif static const char _rcsid[] = "$Id: freebsd.c,v 1.7 2004/05/04 04:42:17 rocky Exp $"; #include "freebsd.h" #ifdef HAVE_FREEBSD_CDROM static access_mode_t str_to_access_mode_freebsd(const char *psz_access_mode) { const access_mode_t default_access_mode = _AM_IOCTL; if (NULL==psz_access_mode) return default_access_mode; if (!strcmp(psz_access_mode, "IOCTL")) return _AM_IOCTL; else if (!strcmp(psz_access_mode, "CAM")) return _AM_CAM; else { cdio_warn ("unknown access type: %s. Default IOCTL used.", psz_access_mode); return default_access_mode; } } static void _free_freebsd (void *obj) { _img_private_t *env = obj; if (NULL == env) return; if (NULL != env->device) free(env->device); if (_AM_CAM == env->access_mode) return free_freebsd_cam(env); else return cdio_generic_free(obj); } /* Check a drive to see if it is a CD-ROM Return 1 if a CD-ROM. 0 if it exists but isn't a CD-ROM drive and -1 if no device exists . */ static bool cdio_is_cdrom(char *drive, char *mnttype) { return cdio_is_cdrom_freebsd_ioctl(drive, mnttype); } /*! Reads a single mode2 sector from cd device into data starting from lsn. Returns 0 if no error. */ static int _read_audio_sectors_freebsd (void *env, void *data, lsn_t lsn, unsigned int nblocks) { return read_audio_sectors_freebsd_ioctl(env, data, lsn, nblocks); } /*! Reads a single mode2 sector from cd device into data starting from lsn. Returns 0 if no error. */ static int _read_mode2_sector_freebsd (void *env, void *data, lsn_t lsn, bool b_form2) { _img_private_t *_obj = env; if ( _obj->access_mode == _AM_CAM ) return read_mode2_sector_freebsd_ioctl(_obj, data, lsn, b_form2); else return read_mode2_sectors_freebsd_cam(_obj, data, lsn, 1, b_form2); } /*! Reads nblocks of mode2 sectors from cd device into data starting from lsn. Returns 0 if no error. */ static int _read_mode2_sectors_freebsd (void *env, void *data, lsn_t lsn, bool b_form2, unsigned int nblocks) { _img_private_t *_obj = env; int i; int retval; if ( _obj->access_mode == _AM_CAM ) return read_mode2_sectors_freebsd_cam(_obj, data, lsn, nblocks, b_form2); for (i = 0; i < nblocks; i++) { if (b_form2) { if ( (retval = read_mode2_sector_freebsd_ioctl (_obj, ((char *)data) + (M2RAW_SECTOR_SIZE * i), lsn + i, true)) ) return retval; } else { char buf[M2RAW_SECTOR_SIZE] = { 0, }; if ( (retval = read_mode2_sector_freebsd_ioctl (_obj, buf, lsn + i, true)) ) return retval; memcpy (((char *)data) + (CDIO_CD_FRAMESIZE * i), buf + CDIO_CD_SUBHEADER_SIZE, CDIO_CD_FRAMESIZE); } } return 0; } /*! Return the size of the CD in logical block address (LBA) units. */ static uint32_t _stat_size_freebsd (void *obj) { _img_private_t *env = obj; if (NULL == env) return CDIO_INVALID_LBA; if (_AM_CAM == env->access_mode) return stat_size_freebsd_cam(env); else return stat_size_freebsd_ioctl(env); } /*! Set the key "arg" to "value" in source device. */ static int _set_arg_freebsd (void *env, const char key[], const char value[]) { _img_private_t *_obj = env; if (!strcmp (key, "source")) { if (!value) return -2; free (_obj->gen.source_name); _obj->gen.source_name = strdup (value); } else if (!strcmp (key, "access-mode")) { _obj->access_mode = str_to_access_mode_freebsd(value); if (_obj->access_mode == _AM_CAM && !_obj->b_cam_init) return init_freebsd_cam(_obj) ? 1 : -3; return 0; } else return -1; return 0; } /*! Read and cache the CD's Track Table of Contents and track info. Return false if successful or true if an error. */ static bool _cdio_read_toc (_img_private_t *_obj) { struct ioc_read_toc_entry te; /* read TOC header */ if ( ioctl(_obj->gen.fd, CDIOREADTOCHEADER, &_obj->tochdr) == -1 ) { cdio_error("error in ioctl(CDIOREADTOCHEADER): %s\n", strerror(errno)); return false; } te.address_format = CD_LBA_FORMAT; te.starting_track = 0; te.data_len = (TOTAL_TRACKS+1) * sizeof(struct cd_toc_entry); te.data = _obj->tocent; if ( ioctl(_obj->gen.fd, CDIOREADTOCENTRYS, &te) == -1 ) { cdio_error("%s: %s\n", "error in ioctl CDROMREADTOCENTRYS for track", strerror(errno)); return false; } return true; } /*! Eject media. Return 1 if successful, 0 otherwise. */ static int _eject_media_freebsd (void *env) { _img_private_t *_obj = env; return (_obj->access_mode == _AM_IOCTL) ? eject_media_freebsd_ioctl(_obj) : eject_media_freebsd_cam(_obj); } /*! Return the value associated with the key "arg". */ static const char * _get_arg_freebsd (void *env, const char key[]) { _img_private_t *_obj = env; if (!strcmp (key, "source")) { return _obj->gen.source_name; } else if (!strcmp (key, "access-mode")) { switch (_obj->access_mode) { case _AM_IOCTL: return "ioctl"; case _AM_CAM: return "CAM"; case _AM_NONE: return "no access method"; } } return NULL; } /*! Return the number of of the first track. CDIO_INVALID_TRACK is returned on error. */ static track_t _get_first_track_num_freebsd(void *env) { _img_private_t *_obj = env; if (!_obj->toc_init) _cdio_read_toc (_obj) ; return FIRST_TRACK_NUM; } /*! Return the media catalog number MCN. Note: string is malloc'd so caller should free() then returned string when done with it. FIXME: This is just a guess. */ static char * _get_mcn_freebsd (const void *env) { const _img_private_t *_obj = env; struct ioc_read_subchannel subchannel; struct cd_sub_channel_info subchannel_info; subchannel.address_format = CD_LBA_FORMAT; subchannel.data_format = CD_MEDIA_CATALOG; subchannel.track = 0; subchannel.data_len = 1; subchannel.data = &subchannel_info; if(ioctl(_obj->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) { perror("CDIOCREADSUBCHANNEL"); return NULL; } /* Probably need a loop over tracks rather than give up if we can't find in track 0. */ if (subchannel_info.what.media_catalog.mc_valid) return strdup(subchannel_info.what.media_catalog.mc_number); else return NULL; } /*! Return the number of tracks in the current medium. CDIO_INVALID_TRACK is returned on error. */ static track_t _get_num_tracks_freebsd(void *env) { _img_private_t *_obj = env; if (!_obj->toc_init) _cdio_read_toc (_obj) ; return TOTAL_TRACKS; } /*! Get format of track. FIXME: We're just guessing this from the GNU/Linux code. */ static track_format_t _get_track_format_freebsd(void *env, track_t track_num) { _img_private_t *_obj = env; struct ioc_read_subchannel subchannel; struct cd_sub_channel_info subchannel_info; subchannel.address_format = CD_LBA_FORMAT; subchannel.data_format = CD_CURRENT_POSITION; subchannel.track = track_num; subchannel.data_len = 1; subchannel.data = &subchannel_info; if(ioctl(_obj->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) { perror("CDIOCREADSUBCHANNEL"); return 1; } if (subchannel_info.what.position.control == 0x04) { if (subchannel_info.what.position.data_format == 0x10) return TRACK_FORMAT_CDI; else if (subchannel_info.what.position.data_format == 0x20) return TRACK_FORMAT_XA; else return TRACK_FORMAT_DATA; } else return TRACK_FORMAT_AUDIO; } /*! Return true if we have XA data (green, mode2 form1) or XA data (green, mode2 form2). That is track begins: sync - header - subheader 12 4 - 8 FIXME: there's gotta be a better design for this and get_track_format? */ static bool _get_track_green_freebsd(void *env, track_t track_num) { _img_private_t *_obj = env; struct ioc_read_subchannel subchannel; struct cd_sub_channel_info subchannel_info; subchannel.address_format = CD_LBA_FORMAT; subchannel.data_format = CD_CURRENT_POSITION; subchannel.track = track_num; subchannel.data_len = 1; subchannel.data = &subchannel_info; if(ioctl(_obj->gen.fd, CDIOCREADSUBCHANNEL, &subchannel) < 0) { perror("CDIOCREADSUBCHANNEL"); return 1; } /* FIXME: Dunno if this is the right way, but it's what I was using in cdinfo for a while. */ return (subchannel_info.what.position.control & 2) != 0; } /*! Return the starting LSN track number track_num in obj. Track numbers start at 1. The "leadout" track is specified either by using track_num LEADOUT_TRACK or the total tracks+1. False is returned if there is no track entry. */ static lba_t _get_track_lba_freebsd(void *env, track_t track_num) { _img_private_t *_obj = env; if (!_obj->toc_init) _cdio_read_toc (_obj) ; if (track_num == CDIO_CDROM_LEADOUT_TRACK) track_num = TOTAL_TRACKS+1; if (track_num > TOTAL_TRACKS+1 || track_num == 0) { return CDIO_INVALID_LBA; } else { return _obj->tocent[track_num-1].addr.lba; } } #endif /* HAVE_FREEBSD_CDROM */ /*! Return an array of strings giving possible CD devices. */ char ** cdio_get_devices_freebsd (void) { #ifndef HAVE_FREEBSD_CDROM return NULL; #else char drive[40]; char **drives = NULL; unsigned int num_drives=0; bool exists=true; char c; /* Scan the system for CD-ROM drives. */ #ifdef USE_ETC_FSTAB struct fstab *fs; setfsent(); /* Check what's in /etc/fstab... */ while ( (fs = getfsent()) ) { if (strncmp(fs->fs_spec, "/dev/sr", 7)) cdio_add_device_list(&drives, fs->fs_spec, &num_drives); } #endif /* Scan the system for CD-ROM drives. Not always 100% reliable, so use the USE_MNTENT code above first. */ for ( c='0'; exists && c <='9'; c++ ) { sprintf(drive, "/dev/acd%cc", c); exists = cdio_is_cdrom(drive, NULL); if ( exists ) { cdio_add_device_list(&drives, drive, &num_drives); } } cdio_add_device_list(&drives, NULL, &num_drives); return drives; #endif /*HAVE_FREEBSD_CDROM*/ } /*! Return a string containing the default CD device if none is specified. */ char * cdio_get_default_device_freebsd() { return strdup(DEFAULT_CDIO_DEVICE); } /*! Initialization routine. This is the only thing that doesn't get called via a function pointer. In fact *we* are the ones to set that up. */ CdIo * cdio_open_freebsd (const char *psz_source_name) { return cdio_open_am_freebsd(psz_source_name, NULL); } /*! Initialization routine. This is the only thing that doesn't get called via a function pointer. In fact *we* are the ones to set that up. */ CdIo * cdio_open_am_freebsd (const char *psz_source_name, const char *psz_access_mode) { #ifdef HAVE_FREEBSD_CDROM CdIo *ret; _img_private_t *_data; cdio_funcs _funcs = { .eject_media = _eject_media_freebsd, .free = _free_freebsd, .get_arg = _get_arg_freebsd, .get_default_device = cdio_get_default_device_freebsd, .get_devices = cdio_get_devices_freebsd, .get_drive_cap = NULL, .get_first_track_num= _get_first_track_num_freebsd, .get_mcn = _get_mcn_freebsd, .get_num_tracks = _get_num_tracks_freebsd, .get_track_format = _get_track_format_freebsd, .get_track_green = _get_track_green_freebsd, .get_track_lba = _get_track_lba_freebsd, .get_track_msf = NULL, .lseek = cdio_generic_lseek, .read = cdio_generic_read, .read_audio_sectors = _read_audio_sectors_freebsd, .read_mode2_sector = _read_mode2_sector_freebsd, .read_mode2_sectors = _read_mode2_sectors_freebsd, .set_arg = _set_arg_freebsd, .stat_size = _stat_size_freebsd }; _data = _cdio_malloc (sizeof (_img_private_t)); _data->access_mode = str_to_access_mode_freebsd(psz_access_mode); _data->device = strdup(psz_source_name); _data->gen.init = false; _data->gen.fd = -1; _set_arg_freebsd(_data, "source", (NULL == psz_source_name) ? DEFAULT_CDIO_DEVICE: psz_source_name); ret = cdio_new (_data, &_funcs); if (ret == NULL) return NULL; if (!cdio_generic_init(_data)) { cdio_generic_free (_data); return NULL; } if ( _data->access_mode == _AM_IOCTL ) { return ret; } else { if (init_freebsd_cam(_data)) return ret; else { cdio_generic_free (_data); return NULL; } } #else return NULL; #endif /* HAVE_FREEBSD_CDROM */ } bool cdio_have_freebsd (void) { #ifdef HAVE_FREEBSD_CDROM return true; #else return false; #endif /* HAVE_FREEBSD_CDROM */ }