2 * cdrom_id - optical drive and media information prober
4 * Copyright (C) 2008-2010 Kay Sievers <kay@vrfy.org>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #include <sys/types.h>
34 #include <sys/ioctl.h>
35 #include <linux/cdrom.h>
38 #include "libudev-private.h"
41 static unsigned int cd_cd_rom;
42 static unsigned int cd_cd_r;
43 static unsigned int cd_cd_rw;
44 static unsigned int cd_dvd_rom;
45 static unsigned int cd_dvd_r;
46 static unsigned int cd_dvd_rw;
47 static unsigned int cd_dvd_ram;
48 static unsigned int cd_dvd_plus_r;
49 static unsigned int cd_dvd_plus_rw;
50 static unsigned int cd_dvd_plus_r_dl;
51 static unsigned int cd_dvd_plus_rw_dl;
52 static unsigned int cd_bd;
53 static unsigned int cd_bd_r;
54 static unsigned int cd_bd_re;
55 static unsigned int cd_hddvd;
56 static unsigned int cd_hddvd_r;
57 static unsigned int cd_hddvd_rw;
58 static unsigned int cd_mo;
59 static unsigned int cd_mrw;
60 static unsigned int cd_mrw_w;
63 static unsigned int cd_media;
64 static unsigned int cd_media_cd_rom;
65 static unsigned int cd_media_cd_r;
66 static unsigned int cd_media_cd_rw;
67 static unsigned int cd_media_dvd_rom;
68 static unsigned int cd_media_dvd_r;
69 static unsigned int cd_media_dvd_rw;
70 static unsigned int cd_media_dvd_rw_ro; /* restricted overwrite mode */
71 static unsigned int cd_media_dvd_rw_seq; /* sequential mode */
72 static unsigned int cd_media_dvd_ram;
73 static unsigned int cd_media_dvd_plus_r;
74 static unsigned int cd_media_dvd_plus_rw;
75 static unsigned int cd_media_dvd_plus_r_dl;
76 static unsigned int cd_media_dvd_plus_rw_dl;
77 static unsigned int cd_media_bd;
78 static unsigned int cd_media_bd_r;
79 static unsigned int cd_media_bd_re;
80 static unsigned int cd_media_hddvd;
81 static unsigned int cd_media_hddvd_r;
82 static unsigned int cd_media_hddvd_rw;
83 static unsigned int cd_media_mo;
84 static unsigned int cd_media_mrw;
85 static unsigned int cd_media_mrw_w;
87 static const char *cd_media_state = NULL;
88 static unsigned int cd_media_session_next;
89 static unsigned int cd_media_session_count;
90 static unsigned int cd_media_track_count;
91 static unsigned int cd_media_track_count_data;
92 static unsigned int cd_media_track_count_audio;
93 static unsigned long long int cd_media_session_last_offset;
95 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
96 #define SK(errcode) (((errcode) >> 16) & 0xF)
97 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
98 #define ASCQ(errcode) ((errcode) & 0xFF)
100 static bool is_mounted(const char *device)
105 bool mounted = false;
107 if (stat(device, &statbuf) < 0)
110 fp = fopen("/proc/self/mountinfo", "re");
113 while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
114 if (makedev(maj, min) == statbuf.st_rdev) {
123 static void info_scsi_cmd_err(struct udev *udev, const char *cmd, int err)
126 log_debug("%s failed", cmd);
129 log_debug("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh", cmd, SK(err), ASC(err), ASCQ(err));
133 struct cdrom_generic_command cgc;
135 struct request_sense s;
138 struct sg_io_hdr sg_io;
141 static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd)
143 memzero(cmd, sizeof(struct scsi_cmd));
145 cmd->cgc.sense = &cmd->_sense.s;
146 cmd->sg_io.interface_id = 'S';
147 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
148 cmd->sg_io.cmdp = cmd->cgc.cmd;
149 cmd->sg_io.sbp = cmd->_sense.u;
150 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
153 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, unsigned char arg)
155 cmd->sg_io.cmd_len = i + 1;
156 cmd->cgc.cmd[i] = arg;
159 #define CHECK_CONDITION 0x01
161 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
166 cmd->sg_io.dxferp = buf;
167 cmd->sg_io.dxfer_len = bufsize;
168 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
170 cmd->sg_io.dxfer_direction = SG_DXFER_NONE;
172 if (ioctl(fd, SG_IO, &cmd->sg_io))
175 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
178 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
179 ret = ERRCODE(cmd->_sense.u);
187 static int media_lock(struct udev *udev, int fd, bool lock)
191 /* disable the kernel's lock logic */
192 err = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK);
194 log_debug("CDROM_CLEAR_OPTIONS, CDO_LOCK failed");
196 err = ioctl(fd, CDROM_LOCKDOOR, lock ? 1 : 0);
198 log_debug("CDROM_LOCKDOOR failed");
203 static int media_eject(struct udev *udev, int fd)
208 scsi_cmd_init(udev, &sc);
209 scsi_cmd_set(udev, &sc, 0, 0x1b);
210 scsi_cmd_set(udev, &sc, 4, 0x02);
211 scsi_cmd_set(udev, &sc, 5, 0);
212 err = scsi_cmd_run(udev, &sc, fd, NULL, 0);
214 info_scsi_cmd_err(udev, "START_STOP_UNIT", err);
220 static int cd_capability_compat(struct udev *udev, int fd)
224 capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
225 if (capability < 0) {
226 log_debug("CDROM_GET_CAPABILITY failed");
230 if (capability & CDC_CD_R)
232 if (capability & CDC_CD_RW)
234 if (capability & CDC_DVD)
236 if (capability & CDC_DVD_R)
238 if (capability & CDC_DVD_RAM)
240 if (capability & CDC_MRW)
242 if (capability & CDC_MRW_W)
247 static int cd_media_compat(struct udev *udev, int fd)
249 if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
250 log_debug("CDROM_DRIVE_STATUS != CDS_DISC_OK");
257 static int cd_inquiry(struct udev *udev, int fd)
260 unsigned char inq[128];
263 scsi_cmd_init(udev, &sc);
264 scsi_cmd_set(udev, &sc, 0, 0x12);
265 scsi_cmd_set(udev, &sc, 4, 36);
266 scsi_cmd_set(udev, &sc, 5, 0);
267 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
269 info_scsi_cmd_err(udev, "INQUIRY", err);
273 if ((inq[0] & 0x1F) != 5) {
274 log_debug("not an MMC unit");
278 log_debug("INQUIRY: [%.8s][%.16s][%.4s]", inq + 8, inq + 16, inq + 32);
282 static void feature_profile_media(struct udev *udev, int cur_profile)
284 switch (cur_profile) {
288 log_debug("profile 0x%02x ", cur_profile);
293 log_debug("profile 0x%02x media_cd_rom", cur_profile);
298 log_debug("profile 0x%02x media_cd_r", cur_profile);
303 log_debug("profile 0x%02x media_cd_rw", cur_profile);
308 log_debug("profile 0x%02x media_dvd_ro", cur_profile);
310 cd_media_dvd_rom = 1;
313 log_debug("profile 0x%02x media_dvd_r", cur_profile);
318 log_debug("profile 0x%02x media_dvd_ram", cur_profile);
320 cd_media_dvd_ram = 1;
323 log_debug("profile 0x%02x media_dvd_rw_ro", cur_profile);
326 cd_media_dvd_rw_ro = 1;
329 log_debug("profile 0x%02x media_dvd_rw_seq", cur_profile);
332 cd_media_dvd_rw_seq = 1;
335 log_debug("profile 0x%02x media_dvd_plus_r", cur_profile);
337 cd_media_dvd_plus_r = 1;
340 log_debug("profile 0x%02x media_dvd_plus_rw", cur_profile);
342 cd_media_dvd_plus_rw = 1;
345 log_debug("profile 0x%02x media_dvd_plus_rw_dl", cur_profile);
347 cd_media_dvd_plus_rw_dl = 1;
350 log_debug("profile 0x%02x media_dvd_plus_r_dl", cur_profile);
352 cd_media_dvd_plus_r_dl = 1;
355 log_debug("profile 0x%02x media_bd", cur_profile);
361 log_debug("profile 0x%02x media_bd_r", cur_profile);
366 log_debug("profile 0x%02x media_bd_re", cur_profile);
371 log_debug("profile 0x%02x media_hddvd", cur_profile);
376 log_debug("profile 0x%02x media_hddvd_r", cur_profile);
378 cd_media_hddvd_r = 1;
381 log_debug("profile 0x%02x media_hddvd_rw", cur_profile);
383 cd_media_hddvd_rw = 1;
386 log_debug("profile 0x%02x <ignored>", cur_profile);
391 static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size)
395 for (i = 0; i+4 <= size; i += 4) {
398 profile = profiles[i] << 8 | profiles[i+1];
403 log_debug("profile 0x%02x mo", profile);
407 log_debug("profile 0x%02x cd_rom", profile);
411 log_debug("profile 0x%02x cd_r", profile);
415 log_debug("profile 0x%02x cd_rw", profile);
419 log_debug("profile 0x%02x dvd_rom", profile);
423 log_debug("profile 0x%02x dvd_ram", profile);
428 log_debug("profile 0x%02x dvd_rw", profile);
432 log_debug("profile 0x%02x dvd_plus_r", profile);
436 log_debug("profile 0x%02x dvd_plus_rw", profile);
440 log_debug("profile 0x%02x dvd_plus_rw_dl", profile);
441 cd_dvd_plus_rw_dl = 1;
444 log_debug("profile 0x%02x dvd_plus_r_dl", profile);
445 cd_dvd_plus_r_dl = 1;
449 log_debug("profile 0x%02x bd", profile);
454 log_debug("profile 0x%02x bd_r", profile);
458 log_debug("profile 0x%02x bd_re", profile);
462 log_debug("profile 0x%02x hddvd", profile);
466 log_debug("profile 0x%02x hddvd_r", profile);
470 log_debug("profile 0x%02x hddvd_rw", profile);
473 log_debug("profile 0x%02x <ignored>", profile);
480 /* returns 0 if media was detected */
481 static int cd_profiles_old_mmc(struct udev *udev, int fd)
486 unsigned char header[32];
488 scsi_cmd_init(udev, &sc);
489 scsi_cmd_set(udev, &sc, 0, 0x51);
490 scsi_cmd_set(udev, &sc, 8, sizeof(header));
491 scsi_cmd_set(udev, &sc, 9, 0);
492 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
494 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
496 log_debug("no current profile, but disc is present; assuming CD-ROM");
498 cd_media_track_count = 1;
499 cd_media_track_count_data = 1;
502 log_debug("no current profile, assuming no media");
509 if (header[2] & 16) {
511 log_debug("profile 0x0a media_cd_rw");
512 } else if ((header[2] & 3) < 2 && cd_cd_r) {
514 log_debug("profile 0x09 media_cd_r");
517 log_debug("profile 0x08 media_cd_rom");
522 /* returns 0 if media was detected */
523 static int cd_profiles(struct udev *udev, int fd)
526 unsigned char features[65530];
527 unsigned int cur_profile = 0;
535 /* First query the current profile */
536 scsi_cmd_init(udev, &sc);
537 scsi_cmd_set(udev, &sc, 0, 0x46);
538 scsi_cmd_set(udev, &sc, 8, 8);
539 scsi_cmd_set(udev, &sc, 9, 0);
540 err = scsi_cmd_run(udev, &sc, fd, features, 8);
542 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
543 /* handle pre-MMC2 drives which do not support GET CONFIGURATION */
544 if (SK(err) == 0x5 && (ASC(err) == 0x20 || ASC(err) == 0x24)) {
545 log_debug("drive is pre-MMC2 and does not support 46h get configuration command");
546 log_debug("trying to work around the problem");
547 ret = cd_profiles_old_mmc(udev, fd);
552 cur_profile = features[6] << 8 | features[7];
553 if (cur_profile > 0) {
554 log_debug("current profile 0x%02x", cur_profile);
555 feature_profile_media (udev, cur_profile);
556 ret = 0; /* we have media */
558 log_debug("no current profile, assuming no media");
561 len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
562 log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
564 if (len > sizeof(features)) {
565 log_debug("can not get features in a single query, truncating");
566 len = sizeof(features);
567 } else if (len <= 8) {
568 len = sizeof(features);
571 /* Now get the full feature buffer */
572 scsi_cmd_init(udev, &sc);
573 scsi_cmd_set(udev, &sc, 0, 0x46);
574 scsi_cmd_set(udev, &sc, 7, ( len >> 8 ) & 0xff);
575 scsi_cmd_set(udev, &sc, 8, len & 0xff);
576 scsi_cmd_set(udev, &sc, 9, 0);
577 err = scsi_cmd_run(udev, &sc, fd, features, len);
579 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
583 /* parse the length once more, in case the drive decided to have other features suddenly :) */
584 len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
585 log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
587 if (len > sizeof(features)) {
588 log_debug("can not get features in a single query, truncating");
589 len = sizeof(features);
592 /* device features */
593 for (i = 8; i+4 < len; i += (4 + features[i+3])) {
594 unsigned int feature;
596 feature = features[i] << 8 | features[i+1];
600 log_debug("GET CONFIGURATION: feature 'profiles', with %i entries", features[i+3] / 4);
601 feature_profiles(udev, &features[i]+4, MIN(features[i+3], len - i - 4));
604 log_debug("GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes", feature, features[i+3]);
612 static int cd_media_info(struct udev *udev, int fd)
615 unsigned char header[32];
616 static const char *media_status[] = {
624 scsi_cmd_init(udev, &sc);
625 scsi_cmd_set(udev, &sc, 0, 0x51);
626 scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
627 scsi_cmd_set(udev, &sc, 9, 0);
628 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
630 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
635 log_debug("disk type %02x", header[8]);
636 log_debug("hardware reported media status: %s", media_status[header[2] & 3]);
638 /* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
639 if (!cd_media_cd_rom)
640 cd_media_state = media_status[header[2] & 3];
642 /* fresh DVD-RW in restricted overwite mode reports itself as
643 * "appendable"; change it to "blank" to make it consistent with what
644 * gets reported after blanking, and what userspace expects */
645 if (cd_media_dvd_rw_ro && (header[2] & 3) == 1)
646 cd_media_state = media_status[0];
648 /* DVD+RW discs (and DVD-RW in restricted mode) once formatted are
649 * always "complete", DVD-RAM are "other" or "complete" if the disc is
650 * write protected; we need to check the contents if it is blank */
651 if ((cd_media_dvd_rw_ro || cd_media_dvd_plus_rw || cd_media_dvd_plus_rw_dl || cd_media_dvd_ram) && (header[2] & 3) > 1) {
652 unsigned char buffer[32 * 2048];
653 unsigned char result, len;
656 if (cd_media_dvd_ram) {
657 /* a write protected dvd-ram may report "complete" status */
659 unsigned char dvdstruct[8];
660 unsigned char format[12];
662 scsi_cmd_init(udev, &sc);
663 scsi_cmd_set(udev, &sc, 0, 0xAD);
664 scsi_cmd_set(udev, &sc, 7, 0xC0);
665 scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct));
666 scsi_cmd_set(udev, &sc, 11, 0);
667 err = scsi_cmd_run(udev, &sc, fd, dvdstruct, sizeof(dvdstruct));
669 info_scsi_cmd_err(udev, "READ DVD STRUCTURE", err);
672 if (dvdstruct[4] & 0x02) {
673 cd_media_state = media_status[2];
674 log_debug("write-protected DVD-RAM media inserted");
678 /* let's make sure we don't try to read unformatted media */
679 scsi_cmd_init(udev, &sc);
680 scsi_cmd_set(udev, &sc, 0, 0x23);
681 scsi_cmd_set(udev, &sc, 8, sizeof(format));
682 scsi_cmd_set(udev, &sc, 9, 0);
683 err = scsi_cmd_run(udev, &sc, fd, format, sizeof(format));
685 info_scsi_cmd_err(udev, "READ DVD FORMAT CAPACITIES", err);
690 if (len & 7 || len < 16) {
691 log_debug("invalid format capacities length");
695 switch(format[8] & 3) {
697 log_debug("unformatted DVD-RAM media inserted");
698 /* This means that last format was interrupted
699 * or failed, blank dvd-ram discs are factory
700 * formatted. Take no action here as it takes
701 * quite a while to reformat a dvd-ram and it's
702 * not automatically started */
706 log_debug("formatted DVD-RAM media inserted");
710 cd_media = 0; //return no media
711 log_debug("format capacities returned no media");
716 /* Take a closer look at formatted media (unformatted DVD+RW
717 * has "blank" status", DVD-RAM was examined earlier) and check
718 * for ISO and UDF PVDs or a fs superblock presence and do it
719 * in one ioctl (we need just sectors 0 and 16) */
720 scsi_cmd_init(udev, &sc);
721 scsi_cmd_set(udev, &sc, 0, 0x28);
722 scsi_cmd_set(udev, &sc, 5, 0);
723 scsi_cmd_set(udev, &sc, 8, 32);
724 scsi_cmd_set(udev, &sc, 9, 0);
725 err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
728 info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err);
732 /* if any non-zero data is found in sector 16 (iso and udf) or
733 * eventually 0 (fat32 boot sector, ext2 superblock, etc), disc
734 * is assumed non-blank */
737 for (block = 32768; block >= 0 && !result; block -= 32768) {
739 while (offset < (block + 2048) && !result) {
740 result = buffer [offset];
746 cd_media_state = media_status[0];
747 log_debug("no data in blocks 0 or 16, assuming blank");
749 log_debug("data in blocks 0 or 16, assuming complete");
754 /* "other" is e. g. DVD-RAM, can't append sessions there; DVDs in
755 * restricted overwrite mode can never append, only in sequential mode */
756 if ((header[2] & 3) < 2 && !cd_media_dvd_rw_ro)
757 cd_media_session_next = header[10] << 8 | header[5];
758 cd_media_session_count = header[9] << 8 | header[4];
759 cd_media_track_count = header[11] << 8 | header[6];
764 static int cd_media_toc(struct udev *udev, int fd)
767 unsigned char header[12];
768 unsigned char toc[65536];
769 unsigned int len, i, num_tracks;
773 scsi_cmd_init(udev, &sc);
774 scsi_cmd_set(udev, &sc, 0, 0x43);
775 scsi_cmd_set(udev, &sc, 6, 1);
776 scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
777 scsi_cmd_set(udev, &sc, 9, 0);
778 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
780 info_scsi_cmd_err(udev, "READ TOC", err);
784 len = (header[0] << 8 | header[1]) + 2;
785 log_debug("READ TOC: len: %d, start track: %d, end track: %d", len, header[2], header[3]);
786 if (len > sizeof(toc))
790 /* 2: first track, 3: last track */
791 num_tracks = header[3] - header[2] + 1;
793 /* empty media has no tracks */
797 scsi_cmd_init(udev, &sc);
798 scsi_cmd_set(udev, &sc, 0, 0x43);
799 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
800 scsi_cmd_set(udev, &sc, 7, (len >> 8) & 0xff);
801 scsi_cmd_set(udev, &sc, 8, len & 0xff);
802 scsi_cmd_set(udev, &sc, 9, 0);
803 err = scsi_cmd_run(udev, &sc, fd, toc, len);
805 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
809 /* Take care to not iterate beyond the last valid track as specified in
810 * the TOC, but also avoid going beyond the TOC length, just in case
811 * the last track number is invalidly large */
812 for (p = toc+4, i = 4; i < len-8 && num_tracks > 0; i += 8, p += 8, --num_tracks) {
814 unsigned int is_data_track;
816 is_data_track = (p[1] & 0x04) != 0;
818 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
819 log_debug("track=%u info=0x%x(%s) start_block=%u",
820 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
823 cd_media_track_count_data++;
825 cd_media_track_count_audio++;
828 scsi_cmd_init(udev, &sc);
829 scsi_cmd_set(udev, &sc, 0, 0x43);
830 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
831 scsi_cmd_set(udev, &sc, 8, sizeof(header));
832 scsi_cmd_set(udev, &sc, 9, 0);
833 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
835 info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
838 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
839 log_debug("last track %u starts at block %u", header[4+2], len);
840 cd_media_session_last_offset = (unsigned long long int)len * 2048;
844 int main(int argc, char *argv[])
847 static const struct option options[] = {
848 { "lock-media", no_argument, NULL, 'l' },
849 { "unlock-media", no_argument, NULL, 'u' },
850 { "eject-media", no_argument, NULL, 'e' },
851 { "debug", no_argument, NULL, 'd' },
852 { "help", no_argument, NULL, 'h' },
858 const char *node = NULL;
863 log_parse_environment();
873 option = getopt_long(argc, argv, "deluh", options, NULL);
888 log_set_target(LOG_TARGET_CONSOLE);
889 log_set_max_level(LOG_DEBUG);
893 printf("Usage: cdrom_id [options] <device>\n"
894 " -l,--lock-media lock the media (to enable eject request events)\n"
895 " -u,--unlock-media unlock the media\n"
896 " -e,--eject-media eject the media\n"
897 " -d,--debug debug to stderr\n"
898 " -h,--help print this help text\n\n");
908 log_error("no device");
909 fprintf(stderr, "no device\n");
915 for (cnt = 20; cnt > 0; cnt--) {
916 struct timespec duration;
918 fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC|(is_mounted(node) ? 0 : O_EXCL));
919 if (fd >= 0 || errno != EBUSY)
922 duration.tv_nsec = (100 * 1000 * 1000) + (rand() % 100 * 1000 * 1000);
923 nanosleep(&duration, NULL);
926 log_debug("unable to open '%s'", node);
927 fprintf(stderr, "unable to open '%s'\n", node);
931 log_debug("probing: '%s'", node);
933 /* same data as original cdrom_id */
934 if (cd_capability_compat(udev, fd) < 0) {
939 /* check for media - don't bail if there's no media as we still need to
940 * to read profiles */
941 cd_media_compat(udev, fd);
943 /* check if drive talks MMC */
944 if (cd_inquiry(udev, fd) < 0)
947 /* read drive and possibly current profile */
948 if (cd_profiles(udev, fd) != 0)
951 /* at this point we are guaranteed to have media in the drive - find out more about it */
953 /* get session/track info */
954 cd_media_toc(udev, fd);
956 /* get writable media state */
957 cd_media_info(udev, fd);
960 /* lock the media, so we enable eject button events */
961 if (lock && cd_media) {
962 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (lock)");
963 media_lock(udev, fd, true);
966 if (unlock && cd_media) {
967 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
968 media_lock(udev, fd, false);
972 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
973 media_lock(udev, fd, false);
974 log_debug("START_STOP_UNIT (eject)");
975 media_eject(udev, fd);
978 printf("ID_CDROM=1\n");
980 printf("ID_CDROM_CD=1\n");
982 printf("ID_CDROM_CD_R=1\n");
984 printf("ID_CDROM_CD_RW=1\n");
986 printf("ID_CDROM_DVD=1\n");
988 printf("ID_CDROM_DVD_R=1\n");
990 printf("ID_CDROM_DVD_RW=1\n");
992 printf("ID_CDROM_DVD_RAM=1\n");
994 printf("ID_CDROM_DVD_PLUS_R=1\n");
996 printf("ID_CDROM_DVD_PLUS_RW=1\n");
997 if (cd_dvd_plus_r_dl)
998 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
999 if (cd_dvd_plus_rw_dl)
1000 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
1002 printf("ID_CDROM_BD=1\n");
1004 printf("ID_CDROM_BD_R=1\n");
1006 printf("ID_CDROM_BD_RE=1\n");
1008 printf("ID_CDROM_HDDVD=1\n");
1010 printf("ID_CDROM_HDDVD_R=1\n");
1012 printf("ID_CDROM_HDDVD_RW=1\n");
1014 printf("ID_CDROM_MO=1\n");
1016 printf("ID_CDROM_MRW=1\n");
1018 printf("ID_CDROM_MRW_W=1\n");
1021 printf("ID_CDROM_MEDIA=1\n");
1023 printf("ID_CDROM_MEDIA_MO=1\n");
1025 printf("ID_CDROM_MEDIA_MRW=1\n");
1027 printf("ID_CDROM_MEDIA_MRW_W=1\n");
1028 if (cd_media_cd_rom)
1029 printf("ID_CDROM_MEDIA_CD=1\n");
1031 printf("ID_CDROM_MEDIA_CD_R=1\n");
1033 printf("ID_CDROM_MEDIA_CD_RW=1\n");
1034 if (cd_media_dvd_rom)
1035 printf("ID_CDROM_MEDIA_DVD=1\n");
1037 printf("ID_CDROM_MEDIA_DVD_R=1\n");
1038 if (cd_media_dvd_ram)
1039 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
1040 if (cd_media_dvd_rw)
1041 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
1042 if (cd_media_dvd_plus_r)
1043 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
1044 if (cd_media_dvd_plus_rw)
1045 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
1046 if (cd_media_dvd_plus_rw_dl)
1047 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
1048 if (cd_media_dvd_plus_r_dl)
1049 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
1051 printf("ID_CDROM_MEDIA_BD=1\n");
1053 printf("ID_CDROM_MEDIA_BD_R=1\n");
1055 printf("ID_CDROM_MEDIA_BD_RE=1\n");
1057 printf("ID_CDROM_MEDIA_HDDVD=1\n");
1058 if (cd_media_hddvd_r)
1059 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
1060 if (cd_media_hddvd_rw)
1061 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
1063 if (cd_media_state != NULL)
1064 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
1065 if (cd_media_session_next > 0)
1066 printf("ID_CDROM_MEDIA_SESSION_NEXT=%u\n", cd_media_session_next);
1067 if (cd_media_session_count > 0)
1068 printf("ID_CDROM_MEDIA_SESSION_COUNT=%u\n", cd_media_session_count);
1069 if (cd_media_session_count > 1 && cd_media_session_last_offset > 0)
1070 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);
1071 if (cd_media_track_count > 0)
1072 printf("ID_CDROM_MEDIA_TRACK_COUNT=%u\n", cd_media_track_count);
1073 if (cd_media_track_count_audio > 0)
1074 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%u\n", cd_media_track_count_audio);
1075 if (cd_media_track_count_data > 0)
1076 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%u\n", cd_media_track_count_data);