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 void log_fn(struct udev *udev, int priority,
42 const char *file, int line, const char *fn,
43 const char *format, va_list args)
45 log_metav(priority, file, line, fn, format, args);
49 static unsigned int cd_cd_rom;
50 static unsigned int cd_cd_r;
51 static unsigned int cd_cd_rw;
52 static unsigned int cd_dvd_rom;
53 static unsigned int cd_dvd_r;
54 static unsigned int cd_dvd_rw;
55 static unsigned int cd_dvd_ram;
56 static unsigned int cd_dvd_plus_r;
57 static unsigned int cd_dvd_plus_rw;
58 static unsigned int cd_dvd_plus_r_dl;
59 static unsigned int cd_dvd_plus_rw_dl;
60 static unsigned int cd_bd;
61 static unsigned int cd_bd_r;
62 static unsigned int cd_bd_re;
63 static unsigned int cd_hddvd;
64 static unsigned int cd_hddvd_r;
65 static unsigned int cd_hddvd_rw;
66 static unsigned int cd_mo;
67 static unsigned int cd_mrw;
68 static unsigned int cd_mrw_w;
71 static unsigned int cd_media;
72 static unsigned int cd_media_cd_rom;
73 static unsigned int cd_media_cd_r;
74 static unsigned int cd_media_cd_rw;
75 static unsigned int cd_media_dvd_rom;
76 static unsigned int cd_media_dvd_r;
77 static unsigned int cd_media_dvd_rw;
78 static unsigned int cd_media_dvd_rw_ro; /* restricted overwrite mode */
79 static unsigned int cd_media_dvd_rw_seq; /* sequential mode */
80 static unsigned int cd_media_dvd_ram;
81 static unsigned int cd_media_dvd_plus_r;
82 static unsigned int cd_media_dvd_plus_rw;
83 static unsigned int cd_media_dvd_plus_r_dl;
84 static unsigned int cd_media_dvd_plus_rw_dl;
85 static unsigned int cd_media_bd;
86 static unsigned int cd_media_bd_r;
87 static unsigned int cd_media_bd_re;
88 static unsigned int cd_media_hddvd;
89 static unsigned int cd_media_hddvd_r;
90 static unsigned int cd_media_hddvd_rw;
91 static unsigned int cd_media_mo;
92 static unsigned int cd_media_mrw;
93 static unsigned int cd_media_mrw_w;
95 static const char *cd_media_state = NULL;
96 static unsigned int cd_media_session_next;
97 static unsigned int cd_media_session_count;
98 static unsigned int cd_media_track_count;
99 static unsigned int cd_media_track_count_data;
100 static unsigned int cd_media_track_count_audio;
101 static unsigned long long int cd_media_session_last_offset;
103 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
104 #define SK(errcode) (((errcode) >> 16) & 0xF)
105 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
106 #define ASCQ(errcode) ((errcode) & 0xFF)
108 static bool is_mounted(const char *device)
113 bool mounted = false;
115 if (stat(device, &statbuf) < 0)
118 fp = fopen("/proc/self/mountinfo", "re");
121 while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
122 if (makedev(maj, min) == statbuf.st_rdev) {
131 static void info_scsi_cmd_err(struct udev *udev, const char *cmd, int err)
134 log_debug("%s failed", cmd);
137 log_debug("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh", cmd, SK(err), ASC(err), ASCQ(err));
141 struct cdrom_generic_command cgc;
143 struct request_sense s;
146 struct sg_io_hdr sg_io;
149 static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd)
151 memzero(cmd, sizeof(struct scsi_cmd));
153 cmd->cgc.sense = &cmd->_sense.s;
154 cmd->sg_io.interface_id = 'S';
155 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
156 cmd->sg_io.cmdp = cmd->cgc.cmd;
157 cmd->sg_io.sbp = cmd->_sense.u;
158 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
161 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, unsigned char arg)
163 cmd->sg_io.cmd_len = i + 1;
164 cmd->cgc.cmd[i] = arg;
167 #define CHECK_CONDITION 0x01
169 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
174 cmd->sg_io.dxferp = buf;
175 cmd->sg_io.dxfer_len = bufsize;
176 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
178 cmd->sg_io.dxfer_direction = SG_DXFER_NONE;
180 if (ioctl(fd, SG_IO, &cmd->sg_io))
183 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
186 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
187 ret = ERRCODE(cmd->_sense.u);
195 static int media_lock(struct udev *udev, int fd, bool lock)
199 /* disable the kernel's lock logic */
200 err = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK);
202 log_debug("CDROM_CLEAR_OPTIONS, CDO_LOCK failed");
204 err = ioctl(fd, CDROM_LOCKDOOR, lock ? 1 : 0);
206 log_debug("CDROM_LOCKDOOR failed");
211 static int media_eject(struct udev *udev, int fd)
216 scsi_cmd_init(udev, &sc);
217 scsi_cmd_set(udev, &sc, 0, 0x1b);
218 scsi_cmd_set(udev, &sc, 4, 0x02);
219 scsi_cmd_set(udev, &sc, 5, 0);
220 err = scsi_cmd_run(udev, &sc, fd, NULL, 0);
222 info_scsi_cmd_err(udev, "START_STOP_UNIT", err);
228 static int cd_capability_compat(struct udev *udev, int fd)
232 capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
233 if (capability < 0) {
234 log_debug("CDROM_GET_CAPABILITY failed");
238 if (capability & CDC_CD_R)
240 if (capability & CDC_CD_RW)
242 if (capability & CDC_DVD)
244 if (capability & CDC_DVD_R)
246 if (capability & CDC_DVD_RAM)
248 if (capability & CDC_MRW)
250 if (capability & CDC_MRW_W)
255 static int cd_media_compat(struct udev *udev, int fd)
257 if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
258 log_debug("CDROM_DRIVE_STATUS != CDS_DISC_OK");
265 static int cd_inquiry(struct udev *udev, int fd)
268 unsigned char inq[128];
271 scsi_cmd_init(udev, &sc);
272 scsi_cmd_set(udev, &sc, 0, 0x12);
273 scsi_cmd_set(udev, &sc, 4, 36);
274 scsi_cmd_set(udev, &sc, 5, 0);
275 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
277 info_scsi_cmd_err(udev, "INQUIRY", err);
281 if ((inq[0] & 0x1F) != 5) {
282 log_debug("not an MMC unit");
286 log_debug("INQUIRY: [%.8s][%.16s][%.4s]", inq + 8, inq + 16, inq + 32);
290 static void feature_profile_media(struct udev *udev, int cur_profile)
292 switch (cur_profile) {
296 log_debug("profile 0x%02x ", cur_profile);
301 log_debug("profile 0x%02x media_cd_rom", cur_profile);
306 log_debug("profile 0x%02x media_cd_r", cur_profile);
311 log_debug("profile 0x%02x media_cd_rw", cur_profile);
316 log_debug("profile 0x%02x media_dvd_ro", cur_profile);
318 cd_media_dvd_rom = 1;
321 log_debug("profile 0x%02x media_dvd_r", cur_profile);
326 log_debug("profile 0x%02x media_dvd_ram", cur_profile);
328 cd_media_dvd_ram = 1;
331 log_debug("profile 0x%02x media_dvd_rw_ro", cur_profile);
334 cd_media_dvd_rw_ro = 1;
337 log_debug("profile 0x%02x media_dvd_rw_seq", cur_profile);
340 cd_media_dvd_rw_seq = 1;
343 log_debug("profile 0x%02x media_dvd_plus_r", cur_profile);
345 cd_media_dvd_plus_r = 1;
348 log_debug("profile 0x%02x media_dvd_plus_rw", cur_profile);
350 cd_media_dvd_plus_rw = 1;
353 log_debug("profile 0x%02x media_dvd_plus_rw_dl", cur_profile);
355 cd_media_dvd_plus_rw_dl = 1;
358 log_debug("profile 0x%02x media_dvd_plus_r_dl", cur_profile);
360 cd_media_dvd_plus_r_dl = 1;
363 log_debug("profile 0x%02x media_bd", cur_profile);
369 log_debug("profile 0x%02x media_bd_r", cur_profile);
374 log_debug("profile 0x%02x media_bd_re", cur_profile);
379 log_debug("profile 0x%02x media_hddvd", cur_profile);
384 log_debug("profile 0x%02x media_hddvd_r", cur_profile);
386 cd_media_hddvd_r = 1;
389 log_debug("profile 0x%02x media_hddvd_rw", cur_profile);
391 cd_media_hddvd_rw = 1;
394 log_debug("profile 0x%02x <ignored>", cur_profile);
399 static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size)
403 for (i = 0; i+4 <= size; i += 4) {
406 profile = profiles[i] << 8 | profiles[i+1];
411 log_debug("profile 0x%02x mo", profile);
415 log_debug("profile 0x%02x cd_rom", profile);
419 log_debug("profile 0x%02x cd_r", profile);
423 log_debug("profile 0x%02x cd_rw", profile);
427 log_debug("profile 0x%02x dvd_rom", profile);
431 log_debug("profile 0x%02x dvd_ram", profile);
436 log_debug("profile 0x%02x dvd_rw", profile);
440 log_debug("profile 0x%02x dvd_plus_r", profile);
444 log_debug("profile 0x%02x dvd_plus_rw", profile);
448 log_debug("profile 0x%02x dvd_plus_rw_dl", profile);
449 cd_dvd_plus_rw_dl = 1;
452 log_debug("profile 0x%02x dvd_plus_r_dl", profile);
453 cd_dvd_plus_r_dl = 1;
457 log_debug("profile 0x%02x bd", profile);
462 log_debug("profile 0x%02x bd_r", profile);
466 log_debug("profile 0x%02x bd_re", profile);
470 log_debug("profile 0x%02x hddvd", profile);
474 log_debug("profile 0x%02x hddvd_r", profile);
478 log_debug("profile 0x%02x hddvd_rw", profile);
481 log_debug("profile 0x%02x <ignored>", profile);
488 /* returns 0 if media was detected */
489 static int cd_profiles_old_mmc(struct udev *udev, int fd)
494 unsigned char header[32];
496 scsi_cmd_init(udev, &sc);
497 scsi_cmd_set(udev, &sc, 0, 0x51);
498 scsi_cmd_set(udev, &sc, 8, sizeof(header));
499 scsi_cmd_set(udev, &sc, 9, 0);
500 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
502 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
504 log_debug("no current profile, but disc is present; assuming CD-ROM");
506 cd_media_track_count = 1;
507 cd_media_track_count_data = 1;
510 log_debug("no current profile, assuming no media");
517 if (header[2] & 16) {
519 log_debug("profile 0x0a media_cd_rw");
520 } else if ((header[2] & 3) < 2 && cd_cd_r) {
522 log_debug("profile 0x09 media_cd_r");
525 log_debug("profile 0x08 media_cd_rom");
530 /* returns 0 if media was detected */
531 static int cd_profiles(struct udev *udev, int fd)
534 unsigned char features[65530];
535 unsigned int cur_profile = 0;
543 /* First query the current profile */
544 scsi_cmd_init(udev, &sc);
545 scsi_cmd_set(udev, &sc, 0, 0x46);
546 scsi_cmd_set(udev, &sc, 8, 8);
547 scsi_cmd_set(udev, &sc, 9, 0);
548 err = scsi_cmd_run(udev, &sc, fd, features, 8);
550 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
551 /* handle pre-MMC2 drives which do not support GET CONFIGURATION */
552 if (SK(err) == 0x5 && (ASC(err) == 0x20 || ASC(err) == 0x24)) {
553 log_debug("drive is pre-MMC2 and does not support 46h get configuration command");
554 log_debug("trying to work around the problem");
555 ret = cd_profiles_old_mmc(udev, fd);
560 cur_profile = features[6] << 8 | features[7];
561 if (cur_profile > 0) {
562 log_debug("current profile 0x%02x", cur_profile);
563 feature_profile_media (udev, cur_profile);
564 ret = 0; /* we have media */
566 log_debug("no current profile, assuming no media");
569 len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
570 log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
572 if (len > sizeof(features)) {
573 log_debug("can not get features in a single query, truncating");
574 len = sizeof(features);
575 } else if (len <= 8) {
576 len = sizeof(features);
579 /* Now get the full feature buffer */
580 scsi_cmd_init(udev, &sc);
581 scsi_cmd_set(udev, &sc, 0, 0x46);
582 scsi_cmd_set(udev, &sc, 7, ( len >> 8 ) & 0xff);
583 scsi_cmd_set(udev, &sc, 8, len & 0xff);
584 scsi_cmd_set(udev, &sc, 9, 0);
585 err = scsi_cmd_run(udev, &sc, fd, features, len);
587 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
591 /* parse the length once more, in case the drive decided to have other features suddenly :) */
592 len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
593 log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
595 if (len > sizeof(features)) {
596 log_debug("can not get features in a single query, truncating");
597 len = sizeof(features);
600 /* device features */
601 for (i = 8; i+4 < len; i += (4 + features[i+3])) {
602 unsigned int feature;
604 feature = features[i] << 8 | features[i+1];
608 log_debug("GET CONFIGURATION: feature 'profiles', with %i entries", features[i+3] / 4);
609 feature_profiles(udev, &features[i]+4, features[i+3]);
612 log_debug("GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes", feature, features[i+3]);
620 static int cd_media_info(struct udev *udev, int fd)
623 unsigned char header[32];
624 static const char *media_status[] = {
632 scsi_cmd_init(udev, &sc);
633 scsi_cmd_set(udev, &sc, 0, 0x51);
634 scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
635 scsi_cmd_set(udev, &sc, 9, 0);
636 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
638 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
643 log_debug("disk type %02x", header[8]);
644 log_debug("hardware reported media status: %s", media_status[header[2] & 3]);
646 /* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
647 if (!cd_media_cd_rom)
648 cd_media_state = media_status[header[2] & 3];
650 /* fresh DVD-RW in restricted overwite mode reports itself as
651 * "appendable"; change it to "blank" to make it consistent with what
652 * gets reported after blanking, and what userspace expects */
653 if (cd_media_dvd_rw_ro && (header[2] & 3) == 1)
654 cd_media_state = media_status[0];
656 /* DVD+RW discs (and DVD-RW in restricted mode) once formatted are
657 * always "complete", DVD-RAM are "other" or "complete" if the disc is
658 * write protected; we need to check the contents if it is blank */
659 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) {
660 unsigned char buffer[32 * 2048];
661 unsigned char result, len;
664 if (cd_media_dvd_ram) {
665 /* a write protected dvd-ram may report "complete" status */
667 unsigned char dvdstruct[8];
668 unsigned char format[12];
670 scsi_cmd_init(udev, &sc);
671 scsi_cmd_set(udev, &sc, 0, 0xAD);
672 scsi_cmd_set(udev, &sc, 7, 0xC0);
673 scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct));
674 scsi_cmd_set(udev, &sc, 11, 0);
675 err = scsi_cmd_run(udev, &sc, fd, dvdstruct, sizeof(dvdstruct));
677 info_scsi_cmd_err(udev, "READ DVD STRUCTURE", err);
680 if (dvdstruct[4] & 0x02) {
681 cd_media_state = media_status[2];
682 log_debug("write-protected DVD-RAM media inserted");
686 /* let's make sure we don't try to read unformatted media */
687 scsi_cmd_init(udev, &sc);
688 scsi_cmd_set(udev, &sc, 0, 0x23);
689 scsi_cmd_set(udev, &sc, 8, sizeof(format));
690 scsi_cmd_set(udev, &sc, 9, 0);
691 err = scsi_cmd_run(udev, &sc, fd, format, sizeof(format));
693 info_scsi_cmd_err(udev, "READ DVD FORMAT CAPACITIES", err);
698 if (len & 7 || len < 16) {
699 log_debug("invalid format capacities length");
703 switch(format[8] & 3) {
705 log_debug("unformatted DVD-RAM media inserted");
706 /* This means that last format was interrupted
707 * or failed, blank dvd-ram discs are factory
708 * formatted. Take no action here as it takes
709 * quite a while to reformat a dvd-ram and it's
710 * not automatically started */
714 log_debug("formatted DVD-RAM media inserted");
718 cd_media = 0; //return no media
719 log_debug("format capacities returned no media");
724 /* Take a closer look at formatted media (unformatted DVD+RW
725 * has "blank" status", DVD-RAM was examined earlier) and check
726 * for ISO and UDF PVDs or a fs superblock presence and do it
727 * in one ioctl (we need just sectors 0 and 16) */
728 scsi_cmd_init(udev, &sc);
729 scsi_cmd_set(udev, &sc, 0, 0x28);
730 scsi_cmd_set(udev, &sc, 5, 0);
731 scsi_cmd_set(udev, &sc, 8, 32);
732 scsi_cmd_set(udev, &sc, 9, 0);
733 err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
736 info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err);
740 /* if any non-zero data is found in sector 16 (iso and udf) or
741 * eventually 0 (fat32 boot sector, ext2 superblock, etc), disc
742 * is assumed non-blank */
745 for (block = 32768; block >= 0 && !result; block -= 32768) {
747 while (offset < (block + 2048) && !result) {
748 result = buffer [offset];
754 cd_media_state = media_status[0];
755 log_debug("no data in blocks 0 or 16, assuming blank");
757 log_debug("data in blocks 0 or 16, assuming complete");
762 /* "other" is e. g. DVD-RAM, can't append sessions there; DVDs in
763 * restricted overwrite mode can never append, only in sequential mode */
764 if ((header[2] & 3) < 2 && !cd_media_dvd_rw_ro)
765 cd_media_session_next = header[10] << 8 | header[5];
766 cd_media_session_count = header[9] << 8 | header[4];
767 cd_media_track_count = header[11] << 8 | header[6];
772 static int cd_media_toc(struct udev *udev, int fd)
775 unsigned char header[12];
776 unsigned char toc[65536];
777 unsigned int len, i, num_tracks;
781 scsi_cmd_init(udev, &sc);
782 scsi_cmd_set(udev, &sc, 0, 0x43);
783 scsi_cmd_set(udev, &sc, 6, 1);
784 scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
785 scsi_cmd_set(udev, &sc, 9, 0);
786 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
788 info_scsi_cmd_err(udev, "READ TOC", err);
792 len = (header[0] << 8 | header[1]) + 2;
793 log_debug("READ TOC: len: %d, start track: %d, end track: %d", len, header[2], header[3]);
794 if (len > sizeof(toc))
798 /* 2: first track, 3: last track */
799 num_tracks = header[3] - header[2] + 1;
801 /* empty media has no tracks */
805 scsi_cmd_init(udev, &sc);
806 scsi_cmd_set(udev, &sc, 0, 0x43);
807 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
808 scsi_cmd_set(udev, &sc, 7, (len >> 8) & 0xff);
809 scsi_cmd_set(udev, &sc, 8, len & 0xff);
810 scsi_cmd_set(udev, &sc, 9, 0);
811 err = scsi_cmd_run(udev, &sc, fd, toc, len);
813 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
817 /* Take care to not iterate beyond the last valid track as specified in
818 * the TOC, but also avoid going beyond the TOC length, just in case
819 * the last track number is invalidly large */
820 for (p = toc+4, i = 4; i < len-8 && num_tracks > 0; i += 8, p += 8, --num_tracks) {
822 unsigned int is_data_track;
824 is_data_track = (p[1] & 0x04) != 0;
826 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
827 log_debug("track=%u info=0x%x(%s) start_block=%u",
828 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
831 cd_media_track_count_data++;
833 cd_media_track_count_audio++;
836 scsi_cmd_init(udev, &sc);
837 scsi_cmd_set(udev, &sc, 0, 0x43);
838 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
839 scsi_cmd_set(udev, &sc, 8, sizeof(header));
840 scsi_cmd_set(udev, &sc, 9, 0);
841 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
843 info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
846 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
847 log_debug("last track %u starts at block %u", header[4+2], len);
848 cd_media_session_last_offset = (unsigned long long int)len * 2048;
852 int main(int argc, char *argv[])
855 static const struct option options[] = {
856 { "lock-media", no_argument, NULL, 'l' },
857 { "unlock-media", no_argument, NULL, 'u' },
858 { "eject-media", no_argument, NULL, 'e' },
859 { "debug", no_argument, NULL, 'd' },
860 { "help", no_argument, NULL, 'h' },
866 const char *node = NULL;
871 log_parse_environment();
878 udev_set_log_fn(udev, log_fn);
883 option = getopt_long(argc, argv, "deluh", options, NULL);
898 log_set_target(LOG_TARGET_CONSOLE);
899 log_set_max_level(LOG_DEBUG);
900 udev_set_log_priority(udev, LOG_DEBUG);
904 printf("Usage: cdrom_id [options] <device>\n"
905 " --lock-media lock the media (to enable eject request events)\n"
906 " --unlock-media unlock the media\n"
907 " --eject-media eject the media\n"
908 " --debug debug to stderr\n"
909 " --help print this help text\n\n");
919 log_error("no device");
920 fprintf(stderr, "no device\n");
925 srand((unsigned int)getpid());
926 for (cnt = 20; cnt > 0; cnt--) {
927 struct timespec duration;
929 fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC|(is_mounted(node) ? 0 : O_EXCL));
930 if (fd >= 0 || errno != EBUSY)
933 duration.tv_nsec = (100 * 1000 * 1000) + (rand() % 100 * 1000 * 1000);
934 nanosleep(&duration, NULL);
937 log_debug("unable to open '%s'", node);
938 fprintf(stderr, "unable to open '%s'\n", node);
942 log_debug("probing: '%s'", node);
944 /* same data as original cdrom_id */
945 if (cd_capability_compat(udev, fd) < 0) {
950 /* check for media - don't bail if there's no media as we still need to
951 * to read profiles */
952 cd_media_compat(udev, fd);
954 /* check if drive talks MMC */
955 if (cd_inquiry(udev, fd) < 0)
958 /* read drive and possibly current profile */
959 if (cd_profiles(udev, fd) != 0)
962 /* at this point we are guaranteed to have media in the drive - find out more about it */
964 /* get session/track info */
965 cd_media_toc(udev, fd);
967 /* get writable media state */
968 cd_media_info(udev, fd);
971 /* lock the media, so we enable eject button events */
972 if (lock && cd_media) {
973 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (lock)");
974 media_lock(udev, fd, true);
977 if (unlock && cd_media) {
978 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
979 media_lock(udev, fd, false);
983 log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
984 media_lock(udev, fd, false);
985 log_debug("START_STOP_UNIT (eject)");
986 media_eject(udev, fd);
989 printf("ID_CDROM=1\n");
991 printf("ID_CDROM_CD=1\n");
993 printf("ID_CDROM_CD_R=1\n");
995 printf("ID_CDROM_CD_RW=1\n");
997 printf("ID_CDROM_DVD=1\n");
999 printf("ID_CDROM_DVD_R=1\n");
1001 printf("ID_CDROM_DVD_RW=1\n");
1003 printf("ID_CDROM_DVD_RAM=1\n");
1005 printf("ID_CDROM_DVD_PLUS_R=1\n");
1007 printf("ID_CDROM_DVD_PLUS_RW=1\n");
1008 if (cd_dvd_plus_r_dl)
1009 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
1010 if (cd_dvd_plus_rw_dl)
1011 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
1013 printf("ID_CDROM_BD=1\n");
1015 printf("ID_CDROM_BD_R=1\n");
1017 printf("ID_CDROM_BD_RE=1\n");
1019 printf("ID_CDROM_HDDVD=1\n");
1021 printf("ID_CDROM_HDDVD_R=1\n");
1023 printf("ID_CDROM_HDDVD_RW=1\n");
1025 printf("ID_CDROM_MO=1\n");
1027 printf("ID_CDROM_MRW=1\n");
1029 printf("ID_CDROM_MRW_W=1\n");
1032 printf("ID_CDROM_MEDIA=1\n");
1034 printf("ID_CDROM_MEDIA_MO=1\n");
1036 printf("ID_CDROM_MEDIA_MRW=1\n");
1038 printf("ID_CDROM_MEDIA_MRW_W=1\n");
1039 if (cd_media_cd_rom)
1040 printf("ID_CDROM_MEDIA_CD=1\n");
1042 printf("ID_CDROM_MEDIA_CD_R=1\n");
1044 printf("ID_CDROM_MEDIA_CD_RW=1\n");
1045 if (cd_media_dvd_rom)
1046 printf("ID_CDROM_MEDIA_DVD=1\n");
1048 printf("ID_CDROM_MEDIA_DVD_R=1\n");
1049 if (cd_media_dvd_ram)
1050 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
1051 if (cd_media_dvd_rw)
1052 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
1053 if (cd_media_dvd_plus_r)
1054 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
1055 if (cd_media_dvd_plus_rw)
1056 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
1057 if (cd_media_dvd_plus_rw_dl)
1058 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
1059 if (cd_media_dvd_plus_r_dl)
1060 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
1062 printf("ID_CDROM_MEDIA_BD=1\n");
1064 printf("ID_CDROM_MEDIA_BD_R=1\n");
1066 printf("ID_CDROM_MEDIA_BD_RE=1\n");
1068 printf("ID_CDROM_MEDIA_HDDVD=1\n");
1069 if (cd_media_hddvd_r)
1070 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
1071 if (cd_media_hddvd_rw)
1072 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
1074 if (cd_media_state != NULL)
1075 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
1076 if (cd_media_session_next > 0)
1077 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
1078 if (cd_media_session_count > 0)
1079 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
1080 if (cd_media_session_count > 1 && cd_media_session_last_offset > 0)
1081 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);
1082 if (cd_media_track_count > 0)
1083 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
1084 if (cd_media_track_count_audio > 0)
1085 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
1086 if (cd_media_track_count_data > 0)
1087 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);