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;
80 static unsigned int cd_media_cd_rom;
81 static unsigned int cd_media_cd_r;
82 static unsigned int cd_media_cd_rw;
83 static unsigned int cd_media_dvd_rom;
84 static unsigned int cd_media_dvd_r;
85 static unsigned int cd_media_dvd_rw;
86 static unsigned int cd_media_dvd_ram;
87 static unsigned int cd_media_dvd_plus_r;
88 static unsigned int cd_media_dvd_plus_rw;
89 static unsigned int cd_media_dvd_plus_r_dl;
90 static unsigned int cd_media_dvd_plus_rw_dl;
91 static unsigned int cd_media_bd;
92 static unsigned int cd_media_bd_r;
93 static unsigned int cd_media_bd_re;
94 static unsigned int cd_media_hddvd;
95 static unsigned int cd_media_hddvd_r;
96 static unsigned int cd_media_hddvd_rw;
97 static unsigned int cd_media_mo;
98 static unsigned int cd_media_mrw;
99 static unsigned int cd_media_mrw_w;
101 static const char *cd_media_state;
102 static unsigned int cd_media_session_next;
103 static unsigned int cd_media_session_count;
104 static unsigned int cd_media_track_count;
105 static unsigned int cd_media_track_count_data;
106 static unsigned int cd_media_track_count_audio;
107 static unsigned long long int cd_media_session_last_offset;
109 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
110 #define SK(errcode) (((errcode) >> 16) & 0xF)
111 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
112 #define ASCQ(errcode) ((errcode) & 0xFF)
114 static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
117 info(udev, "%s failed\n", cmd);
120 info(udev, "%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
124 struct cdrom_generic_command cgc;
126 struct request_sense s;
129 struct sg_io_hdr sg_io;
132 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg)
135 memset(cmd, 0x00, sizeof(struct scsi_cmd));
137 cmd->cgc.sense = &cmd->_sense.s;
138 memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
139 cmd->sg_io.interface_id = 'S';
140 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
141 cmd->sg_io.cmdp = cmd->cgc.cmd;
142 cmd->sg_io.sbp = cmd->_sense.u;
143 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
145 cmd->sg_io.cmd_len = i + 1;
146 cmd->cgc.cmd[i] = arg;
149 #define CHECK_CONDITION 0x01
151 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
155 cmd->sg_io.dxferp = buf;
156 cmd->sg_io.dxfer_len = bufsize;
157 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
158 if (ioctl(fd, SG_IO, &cmd->sg_io))
161 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
164 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
165 ret = ERRCODE(cmd->_sense.u);
173 static int cd_capability_compat(struct udev *udev, int fd)
177 capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
179 info(udev, "CDROM_GET_CAPABILITY failed\n");
183 if (capabilty & CDC_CD_R)
185 if (capabilty & CDC_CD_RW)
187 if (capabilty & CDC_DVD)
189 if (capabilty & CDC_DVD_R)
191 if (capabilty & CDC_DVD_RAM)
193 if (capabilty & CDC_MRW)
195 if (capabilty & CDC_MRW_W)
200 static int cd_media_compat(struct udev *udev, int fd)
202 if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
203 info(udev, "CDROM_DRIVE_STATUS != CDS_DISC_OK\n");
210 static int cd_inquiry(struct udev *udev, int fd) {
212 unsigned char inq[128];
215 scsi_cmd_set(udev, &sc, 0, 0x12);
216 scsi_cmd_set(udev, &sc, 4, 36);
217 scsi_cmd_set(udev, &sc, 5, 0);
218 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
220 info_scsi_cmd_err(udev, "INQUIRY", err);
224 if ((inq[0] & 0x1F) != 5) {
225 info(udev, "not an MMC unit\n");
229 info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
233 static int cd_profiles(struct udev *udev, int fd)
236 unsigned char header[8];
237 unsigned char profiles[512];
238 unsigned int cur_profile;
243 scsi_cmd_set(udev, &sc, 0, 0x46);
244 scsi_cmd_set(udev, &sc, 1, 0);
245 scsi_cmd_set(udev, &sc, 8, sizeof(header));
246 scsi_cmd_set(udev, &sc, 9, 0);
247 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
249 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
253 len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
254 info(udev, "GET CONFIGURATION: number of profiles %i\n", len);
255 if (len > sizeof(profiles)) {
256 info(udev, "invalid number of profiles\n");
260 scsi_cmd_set(udev, &sc, 0, 0x46);
261 scsi_cmd_set(udev, &sc, 1, 1);
262 scsi_cmd_set(udev, &sc, 6, len >> 16);
263 scsi_cmd_set(udev, &sc, 7, len >> 8);
264 scsi_cmd_set(udev, &sc, 8, len);
265 scsi_cmd_set(udev, &sc, 9, 0);
266 err = scsi_cmd_run(udev, &sc, fd, profiles, len);
268 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
272 /* device profiles */
273 for (i = 12; i < profiles[11]; i += 4) {
274 unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
277 info(udev, "profile 0x%02x\n", profile);
302 cd_dvd_plus_rw_dl = 1;
305 cd_dvd_plus_r_dl = 1;
331 /* current media profile */
332 cur_profile = header[6] << 8 | header[7];
333 info(udev, "current profile 0x%02x\n", cur_profile);
334 if (cur_profile == 0) {
335 info(udev, "no current profile, assuming no media\n");
341 switch (cur_profile) {
357 cd_media_dvd_rom = 1;
363 cd_media_dvd_ram = 1;
370 cd_media_dvd_plus_r = 1;
373 cd_media_dvd_plus_rw = 1;
376 cd_media_dvd_plus_rw_dl = 1;
379 cd_media_dvd_plus_r_dl = 1;
395 cd_media_hddvd_r = 1;
398 cd_media_hddvd_rw = 1;
406 static int cd_media_info(struct udev *udev, int fd)
409 unsigned char header[32];
410 static const char *media_status[] = {
418 scsi_cmd_set(udev, &sc, 0, 0x51);
419 scsi_cmd_set(udev, &sc, 8, sizeof(header));
420 scsi_cmd_set(udev, &sc, 9, 0);
421 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
423 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
427 info(udev, "disk type %02x\n", header[8]);
429 /* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
430 if (!cd_media_cd_rom && (header[2] & 3) < 4)
431 cd_media_state = media_status[header[2] & 3];
433 if ((header[2] & 3) != 2)
434 cd_media_session_next = header[10] << 8 | header[5];
435 cd_media_session_count = header[9] << 8 | header[4];
436 cd_media_track_count = header[11] << 8 | header[6];
441 static int cd_media_toc(struct udev *udev, int fd)
444 unsigned char header[12];
445 unsigned char toc[2048];
450 scsi_cmd_set(udev, &sc, 0, 0x43);
451 scsi_cmd_set(udev, &sc, 6, 1);
452 scsi_cmd_set(udev, &sc, 8, sizeof(header));
453 scsi_cmd_set(udev, &sc, 9, 0);
454 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
456 info_scsi_cmd_err(udev, "READ TOC", err);
460 len = (header[0] << 8 | header[1]) + 2;
461 info(udev, "READ TOC: len: %d\n", len);
462 if (len > sizeof(toc))
467 /* empty media has no tracks */
471 scsi_cmd_set(udev, &sc, 0, 0x43);
472 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
473 scsi_cmd_set(udev, &sc, 7, len >> 8);
474 scsi_cmd_set(udev, &sc, 8, len);
475 scsi_cmd_set(udev, &sc, 9, 0);
476 err = scsi_cmd_run(udev, &sc, fd, toc, len);
478 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
482 for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
484 unsigned int is_data_track;
486 is_data_track = (p[1] & 0x04) != 0;
488 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
489 info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
490 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
493 cd_media_track_count_data++;
495 cd_media_track_count_audio++;
498 scsi_cmd_set(udev, &sc, 0, 0x43);
499 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
500 scsi_cmd_set(udev, &sc, 8, 12);
501 scsi_cmd_set(udev, &sc, 9, 0);
502 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
504 info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
507 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
508 info(udev, "last track %u starts at block %u\n", header[4+2], len);
509 cd_media_session_last_offset = (unsigned long long int)len * 2048;
513 int main(int argc, char *argv[])
516 static const struct option options[] = {
517 { "export", no_argument, NULL, 'x' },
518 { "debug", no_argument, NULL, 'd' },
519 { "help", no_argument, NULL, 'h' },
522 const char *node = NULL;
531 logging_init("cdrom_id");
532 udev_set_log_fn(udev, log_fn);
537 option = getopt_long(argc, argv, "dxh", options, NULL);
544 if (udev_get_log_priority(udev) < LOG_INFO)
545 udev_set_log_priority(udev, LOG_INFO);
551 printf("Usage: cdrom_id [options] <device>\n"
552 " --export export key/value pairs\n"
553 " --debug debug to stderr\n"
554 " --help print this help text\n\n");
564 err(udev, "no device\n");
565 fprintf(stderr, "no device\n");
570 fd = open(node, O_RDONLY | O_NONBLOCK);
572 info(udev, "unable to open '%s'\n", node);
573 fprintf(stderr, "unable to open '%s'\n", node);
577 info(udev, "probing: '%s'\n", node);
579 /* same data as original cdrom_id */
580 if (cd_capability_compat(udev, fd) < 0) {
585 /* check for media */
586 if (cd_media_compat(udev, fd) < 0)
589 /* check if drive talks MMC */
590 if (cd_inquiry(udev, fd) < 0)
593 /* read drive and possibly current profile */
594 if (cd_profiles(udev, fd) < 0)
597 /* get session/track info */
598 if (cd_media_toc(udev, fd) < 0)
601 /* get writable media state */
602 if (cd_media_info(udev, fd) < 0)
606 printf("ID_CDROM=1\n");
608 printf("ID_CDROM_CD=1\n");
610 printf("ID_CDROM_CD_R=1\n");
612 printf("ID_CDROM_CD_RW=1\n");
614 printf("ID_CDROM_DVD=1\n");
616 printf("ID_CDROM_DVD_R=1\n");
618 printf("ID_CDROM_DVD_RW=1\n");
620 printf("ID_CDROM_DVD_RAM=1\n");
622 printf("ID_CDROM_DVD_PLUS_R=1\n");
624 printf("ID_CDROM_DVD_PLUS_RW=1\n");
625 if (cd_dvd_plus_r_dl)
626 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
627 if (cd_dvd_plus_rw_dl)
628 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
630 printf("ID_CDROM_BD=1\n");
632 printf("ID_CDROM_BD_R=1\n");
634 printf("ID_CDROM_BD_RE=1\n");
636 printf("ID_CDROM_HDDVD=1\n");
638 printf("ID_CDROM_HDDVD_R=1\n");
640 printf("ID_CDROM_HDDVD_RW=1\n");
642 printf("ID_CDROM_MO=1\n");
644 printf("ID_CDROM_MRW=1\n");
646 printf("ID_CDROM_MRW_W=1\n");
649 printf("ID_CDROM_MEDIA=1\n");
651 printf("ID_CDROM_MEDIA_MO=1\n");
653 printf("ID_CDROM_MEDIA_MRW=1\n");
655 printf("ID_CDROM_MEDIA_MRW_W=1\n");
657 printf("ID_CDROM_MEDIA_CD=1\n");
659 printf("ID_CDROM_MEDIA_CD_R=1\n");
661 printf("ID_CDROM_MEDIA_CD_RW=1\n");
662 if (cd_media_dvd_rom)
663 printf("ID_CDROM_MEDIA_DVD=1\n");
665 printf("ID_CDROM_MEDIA_DVD_R=1\n");
666 if (cd_media_dvd_ram)
667 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
669 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
670 if (cd_media_dvd_plus_r)
671 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
672 if (cd_media_dvd_plus_rw)
673 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
674 if (cd_media_dvd_plus_rw_dl)
675 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
676 if (cd_media_dvd_plus_r_dl)
677 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
679 printf("ID_CDROM_MEDIA_BD=1\n");
681 printf("ID_CDROM_MEDIA_BD_R=1\n");
683 printf("ID_CDROM_MEDIA_BD_RE=1\n");
685 printf("ID_CDROM_MEDIA_HDDVD=1\n");
686 if (cd_media_hddvd_r)
687 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
688 if (cd_media_hddvd_rw)
689 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
691 if (cd_media_state != NULL)
692 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
693 if (cd_media_session_next > 0)
694 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
695 if (cd_media_session_count > 0)
696 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
697 if (cd_media_track_count > 0)
698 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
699 if (cd_media_track_count_audio > 0)
700 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
701 if (cd_media_track_count_data > 0)
702 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
703 if (cd_media_session_last_offset > 0)
704 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);