2 * cdrom_id - optical drive and media information prober
4 * Copyright (C) 2008 Kay Sievers <kay.sievers@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/>.
34 #include <sys/types.h>
37 #include <sys/ioctl.h>
38 #include <linux/cdrom.h>
40 #include "../../udev/udev.h"
43 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
48 static void log_fn(struct udev *udev, int priority,
49 const char *file, int line, const char *fn,
50 const char *format, va_list args)
53 fprintf(stderr, "%s: ", fn);
54 vfprintf(stderr, format, args);
56 vsyslog(priority, format, args);
61 static unsigned int cd_cd_rom;
62 static unsigned int cd_cd_r;
63 static unsigned int cd_cd_rw;
64 static unsigned int cd_dvd_rom;
65 static unsigned int cd_dvd_r;
66 static unsigned int cd_dvd_rw;
67 static unsigned int cd_dvd_ram;
68 static unsigned int cd_dvd_plus_r;
69 static unsigned int cd_dvd_plus_rw;
70 static unsigned int cd_dvd_plus_r_dl;
71 static unsigned int cd_dvd_plus_rw_dl;
72 static unsigned int cd_bd;
73 static unsigned int cd_bd_r;
74 static unsigned int cd_bd_re;
75 static unsigned int cd_hddvd;
76 static unsigned int cd_hddvd_r;
77 static unsigned int cd_hddvd_rw;
78 static unsigned int cd_mo;
79 static unsigned int cd_mrw;
80 static unsigned int cd_mrw_w;
83 static unsigned int cd_media_cd_rom;
84 static unsigned int cd_media_cd_r;
85 static unsigned int cd_media_cd_rw;
86 static unsigned int cd_media_dvd_rom;
87 static unsigned int cd_media_dvd_r;
88 static unsigned int cd_media_dvd_rw;
89 static unsigned int cd_media_dvd_ram;
90 static unsigned int cd_media_dvd_plus_r;
91 static unsigned int cd_media_dvd_plus_rw;
92 static unsigned int cd_media_dvd_plus_r_dl;
93 static unsigned int cd_media_dvd_plus_rw_dl;
94 static unsigned int cd_media_bd;
95 static unsigned int cd_media_bd_r;
96 static unsigned int cd_media_bd_re;
97 static unsigned int cd_media_hddvd;
98 static unsigned int cd_media_hddvd_r;
99 static unsigned int cd_media_hddvd_rw;
100 static unsigned int cd_media_mo;
101 static unsigned int cd_media_mrw;
102 static unsigned int cd_media_mrw_w;
104 static const char *cd_media_state;
105 static unsigned int cd_media_session_next;
106 static unsigned int cd_media_session_count;
107 static unsigned int cd_media_track_count;
108 static unsigned int cd_media_track_count_data;
109 static unsigned int cd_media_track_count_audio;
110 static unsigned long long int cd_media_session_last_offset;
112 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
113 #define SK(errcode) (((errcode) >> 16) & 0xF)
114 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
115 #define ASCQ(errcode) ((errcode) & 0xFF)
117 static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
120 info(udev, "%s failed\n", cmd);
123 info(udev, "%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
127 struct cdrom_generic_command cgc;
129 struct request_sense s;
132 struct sg_io_hdr sg_io;
135 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg)
138 memset(cmd, 0x00, sizeof(struct scsi_cmd));
140 cmd->cgc.sense = &cmd->_sense.s;
141 memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
142 cmd->sg_io.interface_id = 'S';
143 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
144 cmd->sg_io.cmdp = cmd->cgc.cmd;
145 cmd->sg_io.sbp = cmd->_sense.u;
146 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
148 cmd->sg_io.cmd_len = i + 1;
149 cmd->cgc.cmd[i] = arg;
152 #define CHECK_CONDITION 0x01
154 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
158 cmd->sg_io.dxferp = buf;
159 cmd->sg_io.dxfer_len = bufsize;
160 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
161 if (ioctl(fd, SG_IO, &cmd->sg_io))
164 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
167 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
168 ret = ERRCODE(cmd->_sense.u);
176 static int cd_capability_compat(struct udev *udev, int fd)
180 capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
182 info(udev, "CDROM_GET_CAPABILITY failed\n");
186 if (capabilty & CDC_CD_R)
188 if (capabilty & CDC_CD_RW)
190 if (capabilty & CDC_DVD)
192 if (capabilty & CDC_DVD_R)
194 if (capabilty & CDC_DVD_RAM)
196 if (capabilty & CDC_MRW)
198 if (capabilty & CDC_MRW_W)
203 static int cd_inquiry(struct udev *udev, int fd) {
205 unsigned char inq[128];
208 scsi_cmd_set(udev, &sc, 0, 0x12);
209 scsi_cmd_set(udev, &sc, 4, 36);
210 scsi_cmd_set(udev, &sc, 5, 0);
211 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
213 info_scsi_cmd_err(udev, "INQUIRY", err);
217 if ((inq[0] & 0x1F) != 5) {
218 info(udev, "not an MMC unit\n");
222 info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
226 static int cd_profiles(struct udev *udev, int fd)
229 unsigned char header[8];
230 unsigned char profiles[512];
231 unsigned int cur_profile;
236 scsi_cmd_set(udev, &sc, 0, 0x46);
237 scsi_cmd_set(udev, &sc, 1, 0);
238 scsi_cmd_set(udev, &sc, 8, sizeof(header));
239 scsi_cmd_set(udev, &sc, 9, 0);
240 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
242 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
246 len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
247 info(udev, "GET CONFIGURATION: number of profiles %i\n", len);
248 if (len > sizeof(profiles)) {
249 info(udev, "invalid number of profiles\n");
253 scsi_cmd_set(udev, &sc, 0, 0x46);
254 scsi_cmd_set(udev, &sc, 1, 1);
255 scsi_cmd_set(udev, &sc, 6, len >> 16);
256 scsi_cmd_set(udev, &sc, 7, len >> 8);
257 scsi_cmd_set(udev, &sc, 8, len);
258 scsi_cmd_set(udev, &sc, 9, 0);
259 err = scsi_cmd_run(udev, &sc, fd, profiles, len);
261 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
265 /* device profiles */
266 for (i = 12; i < profiles[11]; i += 4) {
267 unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
270 info(udev, "profile 0x%02x\n", profile);
295 cd_dvd_plus_rw_dl = 1;
298 cd_dvd_plus_r_dl = 1;
324 /* current media profile */
325 cur_profile = header[6] << 8 | header[7];
326 info(udev, "current profile 0x%02x\n", cur_profile);
327 if (cur_profile == 0) {
328 info(udev, "no current profile, assuming no media\n");
332 switch (cur_profile) {
348 cd_media_dvd_rom = 1;
354 cd_media_dvd_ram = 1;
361 cd_media_dvd_plus_r = 1;
364 cd_media_dvd_plus_rw = 1;
367 cd_media_dvd_plus_rw_dl = 1;
370 cd_media_dvd_plus_r_dl = 1;
386 cd_media_hddvd_r = 1;
389 cd_media_hddvd_rw = 1;
397 static int cd_media_info(struct udev *udev, int fd)
400 unsigned char header[32];
401 static const char *media_status[] = {
409 scsi_cmd_set(udev, &sc, 0, 0x51);
410 scsi_cmd_set(udev, &sc, 8, sizeof(header));
411 scsi_cmd_set(udev, &sc, 9, 0);
412 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
414 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
418 info(udev, "disk type %02x\n", header[8]);
420 if ((header[2] & 3) < 4)
421 cd_media_state = media_status[header[2] & 3];
422 if ((header[2] & 3) != 2)
423 cd_media_session_next = header[10] << 8 | header[5];
424 cd_media_session_count = header[9] << 8 | header[4];
425 cd_media_track_count = header[11] << 8 | header[6];
430 static int cd_media_toc(struct udev *udev, int fd)
433 unsigned char header[12];
434 unsigned char toc[2048];
439 scsi_cmd_set(udev, &sc, 0, 0x43);
440 scsi_cmd_set(udev, &sc, 6, 1);
441 scsi_cmd_set(udev, &sc, 8, sizeof(header));
442 scsi_cmd_set(udev, &sc, 9, 0);
443 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
445 info_scsi_cmd_err(udev, "READ TOC", err);
449 len = (header[0] << 8 | header[1]) + 2;
450 info(udev, "READ TOC: len: %d\n", len);
451 if (len > sizeof(toc))
456 /* empty media has no tracks */
460 scsi_cmd_set(udev, &sc, 0, 0x43);
461 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
462 scsi_cmd_set(udev, &sc, 7, len >> 8);
463 scsi_cmd_set(udev, &sc, 8, len);
464 scsi_cmd_set(udev, &sc, 9, 0);
465 err = scsi_cmd_run(udev, &sc, fd, toc, len);
467 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
471 for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
473 unsigned int is_data_track;
475 is_data_track = (p[1] & 0x04) != 0;
477 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
478 info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
479 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
482 cd_media_track_count_data++;
484 cd_media_track_count_audio++;
487 scsi_cmd_set(udev, &sc, 0, 0x43);
488 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
489 scsi_cmd_set(udev, &sc, 8, 12);
490 scsi_cmd_set(udev, &sc, 9, 0);
491 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
493 info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
496 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
497 info(udev, "last track %u starts at block %u\n", header[4+2], len);
498 cd_media_session_last_offset = (unsigned long long int)len * 2048;
502 int main(int argc, char *argv[])
505 static const struct option options[] = {
506 { "export", 0, NULL, 'x' },
507 { "debug", 0, NULL, 'd' },
508 { "help", 0, NULL, 'h' },
511 const char *node = NULL;
520 logging_init("cdrom_id");
521 udev_set_log_fn(udev, log_fn);
526 option = getopt_long(argc, argv, "dxh", options, NULL);
533 if (udev_get_log_priority(udev) < LOG_INFO)
534 udev_set_log_priority(udev, LOG_INFO);
540 printf("Usage: cdrom_id [options] <device>\n"
541 " --export export key/value pairs\n"
542 " --debug debug to stderr\n"
543 " --help print this help text\n\n");
553 err(udev, "no device\n");
554 fprintf(stderr, "no device\n");
559 fd = open(node, O_RDONLY | O_NONBLOCK);
561 info(udev, "unable to open '%s'\n", node);
565 info(udev, "probing: '%s'\n", node);
567 /* same data as original cdrom_id */
568 if (cd_capability_compat(udev, fd) < 0) {
574 if (cd_inquiry(udev, fd) < 0) {
579 /* read drive and possibly current profile */
580 if (cd_profiles(udev, fd) < 0)
583 /* get session/track info */
584 if (cd_media_toc(udev, fd) < 0)
587 /* get writable media state */
588 if (cd_media_info(udev, fd) < 0)
592 printf("ID_CDROM=1\n");
594 printf("ID_CDROM_CD=1\n");
596 printf("ID_CDROM_CD_R=1\n");
598 printf("ID_CDROM_CD_RW=1\n");
600 printf("ID_CDROM_DVD=1\n");
602 printf("ID_CDROM_DVD_R=1\n");
604 printf("ID_CDROM_DVD_RW=1\n");
606 printf("ID_CDROM_DVD_RAM=1\n");
608 printf("ID_CDROM_DVD_PLUS_R=1\n");
610 printf("ID_CDROM_DVD_PLUS_RW=1\n");
611 if (cd_dvd_plus_r_dl)
612 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
613 if (cd_dvd_plus_rw_dl)
614 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
616 printf("ID_CDROM_BD=1\n");
618 printf("ID_CDROM_BD_R=1\n");
620 printf("ID_CDROM_BD_RE=1\n");
622 printf("ID_CDROM_HDDVD=1\n");
624 printf("ID_CDROM_HDDVD_R=1\n");
626 printf("ID_CDROM_HDDVD_RW=1\n");
628 printf("ID_CDROM_MO=1\n");
630 printf("ID_CDROM_MRW=1\n");
632 printf("ID_CDROM_MRW_W=1\n");
635 printf("ID_CDROM_MEDIA_MO=1\n");
637 printf("ID_CDROM_MEDIA_MRW=1\n");
639 printf("ID_CDROM_MEDIA_MRW_W=1\n");
641 printf("ID_CDROM_MEDIA_CD=1\n");
643 printf("ID_CDROM_MEDIA_CD_R=1\n");
645 printf("ID_CDROM_MEDIA_CD_RW=1\n");
646 if (cd_media_dvd_rom)
647 printf("ID_CDROM_MEDIA_DVD=1\n");
649 printf("ID_CDROM_MEDIA_DVD_R=1\n");
650 if (cd_media_dvd_ram)
651 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
653 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
654 if (cd_media_dvd_plus_r)
655 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
656 if (cd_media_dvd_plus_rw)
657 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
658 if (cd_media_dvd_plus_rw_dl)
659 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
660 if (cd_media_dvd_plus_r_dl)
661 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
663 printf("ID_CDROM_MEDIA_BD=1\n");
665 printf("ID_CDROM_MEDIA_BD_R=1\n");
667 printf("ID_CDROM_MEDIA_BD_RE=1\n");
669 printf("ID_CDROM_MEDIA_HDDVD=1\n");
670 if (cd_media_hddvd_r)
671 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
672 if (cd_media_hddvd_rw)
673 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
675 if (cd_media_state != NULL)
676 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
677 if (cd_media_session_next > 0)
678 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
679 if (cd_media_session_count > 0)
680 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
681 if (cd_media_track_count > 0)
682 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
683 if (cd_media_track_count_audio > 0)
684 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
685 if (cd_media_track_count_data > 0)
686 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
687 if (cd_media_session_last_offset > 0)
688 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);