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"
44 static void log_fn(struct udev *udev, int priority,
45 const char *file, int line, const char *fn,
46 const char *format, va_list args)
49 fprintf(stderr, "%s: ", fn);
50 vfprintf(stderr, format, args);
52 vsyslog(priority, format, args);
57 static unsigned int cd_cd_rom;
58 static unsigned int cd_cd_r;
59 static unsigned int cd_cd_rw;
60 static unsigned int cd_dvd_rom;
61 static unsigned int cd_dvd_r;
62 static unsigned int cd_dvd_rw;
63 static unsigned int cd_dvd_ram;
64 static unsigned int cd_dvd_plus_r;
65 static unsigned int cd_dvd_plus_rw;
66 static unsigned int cd_dvd_plus_r_dl;
67 static unsigned int cd_dvd_plus_rw_dl;
68 static unsigned int cd_bd;
69 static unsigned int cd_bd_r;
70 static unsigned int cd_bd_re;
71 static unsigned int cd_hddvd;
72 static unsigned int cd_hddvd_r;
73 static unsigned int cd_hddvd_rw;
74 static unsigned int cd_mo;
75 static unsigned int cd_mrw;
76 static unsigned int cd_mrw_w;
79 static unsigned int cd_media_cd_rom;
80 static unsigned int cd_media_cd_r;
81 static unsigned int cd_media_cd_rw;
82 static unsigned int cd_media_dvd_rom;
83 static unsigned int cd_media_dvd_r;
84 static unsigned int cd_media_dvd_rw;
85 static unsigned int cd_media_dvd_ram;
86 static unsigned int cd_media_dvd_plus_r;
87 static unsigned int cd_media_dvd_plus_rw;
88 static unsigned int cd_media_dvd_plus_r_dl;
89 static unsigned int cd_media_dvd_plus_rw_dl;
90 static unsigned int cd_media_bd;
91 static unsigned int cd_media_bd_r;
92 static unsigned int cd_media_bd_re;
93 static unsigned int cd_media_hddvd;
94 static unsigned int cd_media_hddvd_r;
95 static unsigned int cd_media_hddvd_rw;
96 static unsigned int cd_media_mo;
97 static unsigned int cd_media_mrw;
98 static unsigned int cd_media_mrw_w;
100 static const char *cd_media_state;
101 static unsigned int cd_media_session_next;
102 static unsigned int cd_media_session_count;
103 static unsigned int cd_media_track_count;
104 static unsigned int cd_media_track_count_data;
105 static unsigned int cd_media_track_count_audio;
106 static unsigned long long int cd_media_session_last_offset;
108 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
109 #define SK(errcode) (((errcode) >> 16) & 0xF)
110 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
111 #define ASCQ(errcode) ((errcode) & 0xFF)
113 static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
116 info(udev, "%s failed\n", cmd);
119 info(udev, "%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
123 struct cdrom_generic_command cgc;
125 struct request_sense s;
128 struct sg_io_hdr sg_io;
131 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg)
134 memset(cmd, 0x00, sizeof(struct scsi_cmd));
136 cmd->cgc.sense = &cmd->_sense.s;
137 memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
138 cmd->sg_io.interface_id = 'S';
139 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
140 cmd->sg_io.cmdp = cmd->cgc.cmd;
141 cmd->sg_io.sbp = cmd->_sense.u;
142 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
144 cmd->sg_io.cmd_len = i + 1;
145 cmd->cgc.cmd[i] = arg;
148 #define CHECK_CONDITION 0x01
150 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
154 cmd->sg_io.dxferp = buf;
155 cmd->sg_io.dxfer_len = bufsize;
156 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
157 if (ioctl(fd, SG_IO, &cmd->sg_io))
160 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
163 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
164 ret = ERRCODE(cmd->_sense.u);
172 static int cd_capability_compat(struct udev *udev, int fd)
176 capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
178 info(udev, "CDROM_GET_CAPABILITY failed\n");
182 if (capabilty & CDC_CD_R)
184 if (capabilty & CDC_CD_RW)
186 if (capabilty & CDC_DVD)
188 if (capabilty & CDC_DVD_R)
190 if (capabilty & CDC_DVD_RAM)
192 if (capabilty & CDC_MRW)
194 if (capabilty & CDC_MRW_W)
199 static int cd_inquiry(struct udev *udev, int fd) {
201 unsigned char inq[128];
204 scsi_cmd_set(udev, &sc, 0, 0x12);
205 scsi_cmd_set(udev, &sc, 4, 36);
206 scsi_cmd_set(udev, &sc, 5, 0);
207 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
209 info_scsi_cmd_err(udev, "INQUIRY", err);
213 if ((inq[0] & 0x1F) != 5) {
214 info(udev, "not an MMC unit\n");
218 info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
222 static int cd_profiles(struct udev *udev, int fd)
225 unsigned char header[8];
226 unsigned char profiles[512];
227 unsigned int cur_profile;
232 scsi_cmd_set(udev, &sc, 0, 0x46);
233 scsi_cmd_set(udev, &sc, 1, 0);
234 scsi_cmd_set(udev, &sc, 8, sizeof(header));
235 scsi_cmd_set(udev, &sc, 9, 0);
236 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
238 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
242 len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
243 info(udev, "GET CONFIGURATION: number of profiles %i\n", len);
244 if (len > sizeof(profiles)) {
245 info(udev, "invalid number of profiles\n");
249 scsi_cmd_set(udev, &sc, 0, 0x46);
250 scsi_cmd_set(udev, &sc, 1, 1);
251 scsi_cmd_set(udev, &sc, 6, len >> 16);
252 scsi_cmd_set(udev, &sc, 7, len >> 8);
253 scsi_cmd_set(udev, &sc, 8, len);
254 scsi_cmd_set(udev, &sc, 9, 0);
255 err = scsi_cmd_run(udev, &sc, fd, profiles, len);
257 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
261 /* device profiles */
262 for (i = 12; i < profiles[11]; i += 4) {
263 unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
266 info(udev, "profile 0x%02x\n", profile);
291 cd_dvd_plus_rw_dl = 1;
294 cd_dvd_plus_r_dl = 1;
320 /* current media profile */
321 cur_profile = header[6] << 8 | header[7];
322 info(udev, "current profile 0x%02x\n", cur_profile);
323 if (cur_profile == 0) {
324 info(udev, "no current profile, assuming no media\n");
328 switch (cur_profile) {
344 cd_media_dvd_rom = 1;
350 cd_media_dvd_ram = 1;
357 cd_media_dvd_plus_r = 1;
360 cd_media_dvd_plus_rw = 1;
363 cd_media_dvd_plus_rw_dl = 1;
366 cd_media_dvd_plus_r_dl = 1;
382 cd_media_hddvd_r = 1;
385 cd_media_hddvd_rw = 1;
393 static int cd_media_info(struct udev *udev, int fd)
396 unsigned char header[32];
397 static const char *media_status[] = {
405 scsi_cmd_set(udev, &sc, 0, 0x51);
406 scsi_cmd_set(udev, &sc, 8, sizeof(header));
407 scsi_cmd_set(udev, &sc, 9, 0);
408 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
410 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
414 info(udev, "disk type %02x\n", header[8]);
416 if ((header[2] & 3) < 4)
417 cd_media_state = media_status[header[2] & 3];
418 if ((header[2] & 3) != 2)
419 cd_media_session_next = header[10] << 8 | header[5];
420 cd_media_session_count = header[9] << 8 | header[4];
421 cd_media_track_count = header[11] << 8 | header[6];
426 static int cd_media_toc(struct udev *udev, int fd)
429 unsigned char header[12];
430 unsigned char toc[2048];
435 scsi_cmd_set(udev, &sc, 0, 0x43);
436 scsi_cmd_set(udev, &sc, 6, 1);
437 scsi_cmd_set(udev, &sc, 8, sizeof(header));
438 scsi_cmd_set(udev, &sc, 9, 0);
439 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
441 info_scsi_cmd_err(udev, "READ TOC", err);
445 len = (header[0] << 8 | header[1]) + 2;
446 info(udev, "READ TOC: len: %d\n", len);
447 if (len > sizeof(toc))
452 /* empty media has no tracks */
456 scsi_cmd_set(udev, &sc, 0, 0x43);
457 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
458 scsi_cmd_set(udev, &sc, 7, len >> 8);
459 scsi_cmd_set(udev, &sc, 8, len);
460 scsi_cmd_set(udev, &sc, 9, 0);
461 err = scsi_cmd_run(udev, &sc, fd, toc, len);
463 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
467 for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
469 unsigned int is_data_track;
471 is_data_track = (p[1] & 0x04) != 0;
473 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
474 info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
475 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
478 cd_media_track_count_data++;
480 cd_media_track_count_audio++;
483 scsi_cmd_set(udev, &sc, 0, 0x43);
484 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
485 scsi_cmd_set(udev, &sc, 8, 12);
486 scsi_cmd_set(udev, &sc, 9, 0);
487 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
489 info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
492 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
493 info(udev, "last track %u starts at block %u\n", header[4+2], len);
494 cd_media_session_last_offset = (unsigned long long int)len * 2048;
498 int main(int argc, char *argv[])
501 static const struct option options[] = {
502 { "export", no_argument, NULL, 'x' },
503 { "debug", no_argument, NULL, 'd' },
504 { "help", no_argument, NULL, 'h' },
507 const char *node = NULL;
516 logging_init("cdrom_id");
517 udev_set_log_fn(udev, log_fn);
522 option = getopt_long(argc, argv, "dxh", options, NULL);
529 if (udev_get_log_priority(udev) < LOG_INFO)
530 udev_set_log_priority(udev, LOG_INFO);
536 printf("Usage: cdrom_id [options] <device>\n"
537 " --export export key/value pairs\n"
538 " --debug debug to stderr\n"
539 " --help print this help text\n\n");
549 err(udev, "no device\n");
550 fprintf(stderr, "no device\n");
555 fd = open(node, O_RDONLY | O_NONBLOCK);
557 info(udev, "unable to open '%s'\n", node);
561 info(udev, "probing: '%s'\n", node);
563 /* same data as original cdrom_id */
564 if (cd_capability_compat(udev, fd) < 0) {
570 if (cd_inquiry(udev, fd) < 0) {
575 /* read drive and possibly current profile */
576 if (cd_profiles(udev, fd) < 0)
579 /* get session/track info */
580 if (cd_media_toc(udev, fd) < 0)
583 /* get writable media state */
584 if (cd_media_info(udev, fd) < 0)
588 printf("ID_CDROM=1\n");
590 printf("ID_CDROM_CD=1\n");
592 printf("ID_CDROM_CD_R=1\n");
594 printf("ID_CDROM_CD_RW=1\n");
596 printf("ID_CDROM_DVD=1\n");
598 printf("ID_CDROM_DVD_R=1\n");
600 printf("ID_CDROM_DVD_RW=1\n");
602 printf("ID_CDROM_DVD_RAM=1\n");
604 printf("ID_CDROM_DVD_PLUS_R=1\n");
606 printf("ID_CDROM_DVD_PLUS_RW=1\n");
607 if (cd_dvd_plus_r_dl)
608 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
609 if (cd_dvd_plus_rw_dl)
610 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
612 printf("ID_CDROM_BD=1\n");
614 printf("ID_CDROM_BD_R=1\n");
616 printf("ID_CDROM_BD_RE=1\n");
618 printf("ID_CDROM_HDDVD=1\n");
620 printf("ID_CDROM_HDDVD_R=1\n");
622 printf("ID_CDROM_HDDVD_RW=1\n");
624 printf("ID_CDROM_MO=1\n");
626 printf("ID_CDROM_MRW=1\n");
628 printf("ID_CDROM_MRW_W=1\n");
631 printf("ID_CDROM_MEDIA_MO=1\n");
633 printf("ID_CDROM_MEDIA_MRW=1\n");
635 printf("ID_CDROM_MEDIA_MRW_W=1\n");
637 printf("ID_CDROM_MEDIA_CD=1\n");
639 printf("ID_CDROM_MEDIA_CD_R=1\n");
641 printf("ID_CDROM_MEDIA_CD_RW=1\n");
642 if (cd_media_dvd_rom)
643 printf("ID_CDROM_MEDIA_DVD=1\n");
645 printf("ID_CDROM_MEDIA_DVD_R=1\n");
646 if (cd_media_dvd_ram)
647 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
649 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
650 if (cd_media_dvd_plus_r)
651 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
652 if (cd_media_dvd_plus_rw)
653 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
654 if (cd_media_dvd_plus_rw_dl)
655 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
656 if (cd_media_dvd_plus_r_dl)
657 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
659 printf("ID_CDROM_MEDIA_BD=1\n");
661 printf("ID_CDROM_MEDIA_BD_R=1\n");
663 printf("ID_CDROM_MEDIA_BD_RE=1\n");
665 printf("ID_CDROM_MEDIA_HDDVD=1\n");
666 if (cd_media_hddvd_r)
667 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
668 if (cd_media_hddvd_rw)
669 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
671 if (cd_media_state != NULL)
672 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
673 if (cd_media_session_next > 0)
674 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
675 if (cd_media_session_count > 0)
676 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
677 if (cd_media_track_count > 0)
678 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
679 if (cd_media_track_count_audio > 0)
680 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
681 if (cd_media_track_count_data > 0)
682 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
683 if (cd_media_session_last_offset > 0)
684 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);