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 it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation version 2 of the License.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 #include <sys/types.h>
38 #include <sys/ioctl.h>
39 #include <linux/cdrom.h>
41 #include "../../udev/udev.h"
44 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
49 static void log_fn(struct udev *udev, int priority,
50 const char *file, int line, const char *fn,
51 const char *format, va_list args)
54 fprintf(stderr, "%s: ", fn);
55 vfprintf(stderr, format, args);
57 vsyslog(priority, format, args);
62 static unsigned int cd_cd_rom;
63 static unsigned int cd_cd_r;
64 static unsigned int cd_cd_rw;
65 static unsigned int cd_dvd_rom;
66 static unsigned int cd_dvd_r;
67 static unsigned int cd_dvd_rw;
68 static unsigned int cd_dvd_ram;
69 static unsigned int cd_dvd_plus_r;
70 static unsigned int cd_dvd_plus_rw;
71 static unsigned int cd_dvd_plus_r_dl;
72 static unsigned int cd_dvd_plus_rw_dl;
73 static unsigned int cd_bd;
74 static unsigned int cd_bd_r;
75 static unsigned int cd_bd_re;
76 static unsigned int cd_hddvd;
77 static unsigned int cd_hddvd_r;
78 static unsigned int cd_hddvd_rw;
79 static unsigned int cd_mo;
80 static unsigned int cd_mrw;
81 static unsigned int cd_mrw_w;
84 static unsigned int cd_media_cd_rom;
85 static unsigned int cd_media_cd_r;
86 static unsigned int cd_media_cd_rw;
87 static unsigned int cd_media_dvd_rom;
88 static unsigned int cd_media_dvd_r;
89 static unsigned int cd_media_dvd_rw;
90 static unsigned int cd_media_dvd_ram;
91 static unsigned int cd_media_dvd_plus_r;
92 static unsigned int cd_media_dvd_plus_rw;
93 static unsigned int cd_media_dvd_plus_r_dl;
94 static unsigned int cd_media_dvd_plus_rw_dl;
95 static unsigned int cd_media_bd;
96 static unsigned int cd_media_bd_r;
97 static unsigned int cd_media_bd_re;
98 static unsigned int cd_media_hddvd;
99 static unsigned int cd_media_hddvd_r;
100 static unsigned int cd_media_hddvd_rw;
101 static unsigned int cd_media_mo;
102 static unsigned int cd_media_mrw;
103 static unsigned int cd_media_mrw_w;
105 static const char *cd_media_state;
106 static unsigned int cd_media_session_next;
107 static unsigned int cd_media_session_count;
108 static unsigned int cd_media_track_count;
109 static unsigned int cd_media_track_count_data;
110 static unsigned int cd_media_track_count_audio;
111 static unsigned long long int cd_media_session_last_offset;
113 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
114 #define SK(errcode) (((errcode) >> 16) & 0xF)
115 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
116 #define ASCQ(errcode) ((errcode) & 0xFF)
118 static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
121 info(udev, "%s failed\n", cmd);
124 info(udev, "%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
128 struct cdrom_generic_command cgc;
130 struct request_sense s;
133 struct sg_io_hdr sg_io;
136 static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg)
139 memset(cmd, 0x00, sizeof(struct scsi_cmd));
141 cmd->cgc.sense = &cmd->_sense.s;
142 memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
143 cmd->sg_io.interface_id = 'S';
144 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
145 cmd->sg_io.cmdp = cmd->cgc.cmd;
146 cmd->sg_io.sbp = cmd->_sense.u;
147 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
149 cmd->sg_io.cmd_len = i + 1;
150 cmd->cgc.cmd[i] = arg;
153 #define CHECK_CONDITION 0x01
155 static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
159 cmd->sg_io.dxferp = buf;
160 cmd->sg_io.dxfer_len = bufsize;
161 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
162 if (ioctl(fd, SG_IO, &cmd->sg_io))
165 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
168 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
169 ret = ERRCODE(cmd->_sense.u);
177 static int cd_capability_compat(struct udev *udev, int fd)
181 capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
183 info(udev, "CDROM_GET_CAPABILITY failed\n");
187 if (capabilty & CDC_CD_R)
189 if (capabilty & CDC_CD_RW)
191 if (capabilty & CDC_DVD)
193 if (capabilty & CDC_DVD_R)
195 if (capabilty & CDC_DVD_RAM)
197 if (capabilty & CDC_MRW)
199 if (capabilty & CDC_MRW_W)
204 static int cd_inquiry(struct udev *udev, int fd) {
206 unsigned char inq[128];
209 scsi_cmd_set(udev, &sc, 0, 0x12);
210 scsi_cmd_set(udev, &sc, 4, 36);
211 scsi_cmd_set(udev, &sc, 5, 0);
212 err = scsi_cmd_run(udev, &sc, fd, inq, 36);
214 info_scsi_cmd_err(udev, "INQUIRY", err);
218 if ((inq[0] & 0x1F) != 5) {
219 info(udev, "not an MMC unit\n");
223 info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
227 static int cd_profiles(struct udev *udev, int fd)
230 unsigned char header[8];
231 unsigned char profiles[512];
232 unsigned int cur_profile;
237 scsi_cmd_set(udev, &sc, 0, 0x46);
238 scsi_cmd_set(udev, &sc, 1, 0);
239 scsi_cmd_set(udev, &sc, 8, sizeof(header));
240 scsi_cmd_set(udev, &sc, 9, 0);
241 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
243 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
247 len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
248 info(udev, "GET CONFIGURATION: number of profiles %i\n", len);
249 if (len > sizeof(profiles)) {
250 info(udev, "invalid number of profiles\n");
254 scsi_cmd_set(udev, &sc, 0, 0x46);
255 scsi_cmd_set(udev, &sc, 1, 1);
256 scsi_cmd_set(udev, &sc, 6, len >> 16);
257 scsi_cmd_set(udev, &sc, 7, len >> 8);
258 scsi_cmd_set(udev, &sc, 8, len);
259 scsi_cmd_set(udev, &sc, 9, 0);
260 err = scsi_cmd_run(udev, &sc, fd, profiles, len);
262 info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
266 /* device profiles */
267 for (i = 12; i < profiles[11]; i += 4) {
268 unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
271 info(udev, "profile 0x%02x\n", profile);
296 cd_dvd_plus_rw_dl = 1;
299 cd_dvd_plus_r_dl = 1;
325 /* current media profile */
326 cur_profile = header[6] << 8 | header[7];
327 info(udev, "current profile 0x%02x\n", cur_profile);
328 if (cur_profile == 0) {
329 info(udev, "no current profile, assuming no media\n");
333 switch (cur_profile) {
349 cd_media_dvd_rom = 1;
355 cd_media_dvd_ram = 1;
362 cd_media_dvd_plus_r = 1;
365 cd_media_dvd_plus_rw = 1;
368 cd_media_dvd_plus_rw_dl = 1;
371 cd_media_dvd_plus_r_dl = 1;
387 cd_media_hddvd_r = 1;
390 cd_media_hddvd_rw = 1;
398 static int cd_media_info(struct udev *udev, int fd)
401 unsigned char header[32];
402 static const char *media_status[] = {
410 scsi_cmd_set(udev, &sc, 0, 0x51);
411 scsi_cmd_set(udev, &sc, 8, sizeof(header));
412 scsi_cmd_set(udev, &sc, 9, 0);
413 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
415 info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
419 info(udev, "disk type %02x\n", header[8]);
421 if ((header[2] & 3) < 4)
422 cd_media_state = media_status[header[2] & 3];
423 if ((header[2] & 3) != 2)
424 cd_media_session_next = header[10] << 8 | header[5];
425 cd_media_session_count = header[9] << 8 | header[4];
426 cd_media_track_count = header[11] << 8 | header[6];
431 static int cd_media_toc(struct udev *udev, int fd)
434 unsigned char header[12];
435 unsigned char toc[2048];
440 scsi_cmd_set(udev, &sc, 0, 0x43);
441 scsi_cmd_set(udev, &sc, 6, 1);
442 scsi_cmd_set(udev, &sc, 8, sizeof(header));
443 scsi_cmd_set(udev, &sc, 9, 0);
444 err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
446 info_scsi_cmd_err(udev, "READ TOC", err);
450 len = (header[0] << 8 | header[1]) + 2;
451 info(udev, "READ TOC: len: %d\n", len);
452 if (len > sizeof(toc))
457 /* empty media has no tracks */
461 scsi_cmd_set(udev, &sc, 0, 0x43);
462 scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
463 scsi_cmd_set(udev, &sc, 7, len >> 8);
464 scsi_cmd_set(udev, &sc, 8, len);
465 scsi_cmd_set(udev, &sc, 9, 0);
466 err = scsi_cmd_run(udev, &sc, fd, toc, len);
468 info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
472 for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
474 unsigned int is_data_track;
476 is_data_track = (p[1] & 0x04) != 0;
478 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
479 info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
480 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
483 cd_media_track_count_data++;
485 cd_media_track_count_audio++;
488 scsi_cmd_set(udev, &sc, 0, 0x43);
489 scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
490 scsi_cmd_set(udev, &sc, 8, 12);
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 TOC (multi session)", err);
497 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
498 info(udev, "last track %u starts at block %u\n", header[4+2], len);
499 cd_media_session_last_offset = (unsigned long long int)len * 2048;
503 int main(int argc, char *argv[])
506 static const struct option options[] = {
507 { "export", 0, NULL, 'x' },
508 { "debug", 0, NULL, 'd' },
509 { "help", 0, NULL, 'h' },
512 const char *node = NULL;
521 logging_init("cdrom_id");
522 udev_set_log_fn(udev, log_fn);
527 option = getopt_long(argc, argv, "dxh", options, NULL);
534 if (udev_get_log_priority(udev) < LOG_INFO)
535 udev_set_log_priority(udev, LOG_INFO);
541 printf("Usage: cdrom_id [options] <device>\n"
542 " --export export key/value pairs\n"
543 " --debug debug to stderr\n"
544 " --help print this help text\n\n");
554 err(udev, "no device\n");
555 fprintf(stderr, "no device\n");
560 fd = open(node, O_RDONLY | O_NONBLOCK);
562 info(udev, "unable to open '%s'\n", node);
566 info(udev, "probing: '%s'\n", node);
568 /* same data as original cdrom_id */
569 if (cd_capability_compat(udev, fd) < 0) {
575 if (cd_inquiry(udev, fd) < 0) {
580 /* read drive and possibly current profile */
581 if (cd_profiles(udev, fd) < 0)
584 /* get session/track info */
585 if (cd_media_toc(udev, fd) < 0)
588 /* get writable media state */
589 if (cd_media_info(udev, fd) < 0)
593 printf("ID_CDROM=1\n");
595 printf("ID_CDROM_CD=1\n");
597 printf("ID_CDROM_CD_R=1\n");
599 printf("ID_CDROM_CD_RW=1\n");
601 printf("ID_CDROM_DVD=1\n");
603 printf("ID_CDROM_DVD_R=1\n");
605 printf("ID_CDROM_DVD_RW=1\n");
607 printf("ID_CDROM_DVD_RAM=1\n");
609 printf("ID_CDROM_DVD_PLUS_R=1\n");
611 printf("ID_CDROM_DVD_PLUS_RW=1\n");
612 if (cd_dvd_plus_r_dl)
613 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
614 if (cd_dvd_plus_rw_dl)
615 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
617 printf("ID_CDROM_BD=1\n");
619 printf("ID_CDROM_BD_R=1\n");
621 printf("ID_CDROM_BD_RE=1\n");
623 printf("ID_CDROM_HDDVD=1\n");
625 printf("ID_CDROM_HDDVD_R=1\n");
627 printf("ID_CDROM_HDDVD_RW=1\n");
629 printf("ID_CDROM_MO=1\n");
631 printf("ID_CDROM_MRW=1\n");
633 printf("ID_CDROM_MRW_W=1\n");
636 printf("ID_CDROM_MEDIA_MO=1\n");
638 printf("ID_CDROM_MEDIA_MRW=1\n");
640 printf("ID_CDROM_MEDIA_MRW_W=1\n");
642 printf("ID_CDROM_MEDIA_CD=1\n");
644 printf("ID_CDROM_MEDIA_CD_R=1\n");
646 printf("ID_CDROM_MEDIA_CD_RW=1\n");
647 if (cd_media_dvd_rom)
648 printf("ID_CDROM_MEDIA_DVD=1\n");
650 printf("ID_CDROM_MEDIA_DVD_R=1\n");
651 if (cd_media_dvd_ram)
652 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
654 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
655 if (cd_media_dvd_plus_r)
656 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
657 if (cd_media_dvd_plus_rw)
658 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
659 if (cd_media_dvd_plus_rw_dl)
660 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
661 if (cd_media_dvd_plus_r_dl)
662 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
664 printf("ID_CDROM_MEDIA_BD=1\n");
666 printf("ID_CDROM_MEDIA_BD_R=1\n");
668 printf("ID_CDROM_MEDIA_BD_RE=1\n");
670 printf("ID_CDROM_MEDIA_HDDVD=1\n");
671 if (cd_media_hddvd_r)
672 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
673 if (cd_media_hddvd_rw)
674 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
676 if (cd_media_state != NULL)
677 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
678 if (cd_media_session_next > 0)
679 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
680 if (cd_media_session_count > 0)
681 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
682 if (cd_media_track_count > 0)
683 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
684 if (cd_media_track_count_audio > 0)
685 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
686 if (cd_media_track_count_data > 0)
687 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
688 if (cd_media_session_last_offset > 0)
689 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);