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]))
50 void log_message(int priority, const char *format, ...)
53 static int udev_log = -1;
58 value = getenv("UDEV_LOG");
60 udev_log = log_priority(value);
64 if (debug && udev_log < LOG_INFO)
68 if (priority > udev_log)
71 va_start(args, format);
73 fprintf(stderr, "[%d] ", (int) getpid());
74 vfprintf(stderr, format, args);
76 vsyslog(priority, format, args);
82 static unsigned int cd_cd_rom;
83 static unsigned int cd_cd_r;
84 static unsigned int cd_cd_rw;
85 static unsigned int cd_dvd_rom;
86 static unsigned int cd_dvd_r;
87 static unsigned int cd_dvd_rw;
88 static unsigned int cd_dvd_ram;
89 static unsigned int cd_dvd_plus_r;
90 static unsigned int cd_dvd_plus_rw;
91 static unsigned int cd_dvd_plus_r_dl;
92 static unsigned int cd_dvd_plus_rw_dl;
93 static unsigned int cd_bd;
94 static unsigned int cd_bd_r;
95 static unsigned int cd_bd_re;
96 static unsigned int cd_hddvd;
97 static unsigned int cd_hddvd_r;
98 static unsigned int cd_hddvd_rw;
99 static unsigned int cd_mo;
100 static unsigned int cd_mrw;
101 static unsigned int cd_mrw_w;
104 static unsigned int cd_media_cd_rom;
105 static unsigned int cd_media_cd_r;
106 static unsigned int cd_media_cd_rw;
107 static unsigned int cd_media_dvd_rom;
108 static unsigned int cd_media_dvd_r;
109 static unsigned int cd_media_dvd_rw;
110 static unsigned int cd_media_dvd_ram;
111 static unsigned int cd_media_dvd_plus_r;
112 static unsigned int cd_media_dvd_plus_rw;
113 static unsigned int cd_media_dvd_plus_r_dl;
114 static unsigned int cd_media_dvd_plus_rw_dl;
115 static unsigned int cd_media_bd;
116 static unsigned int cd_media_bd_r;
117 static unsigned int cd_media_bd_re;
118 static unsigned int cd_media_hddvd;
119 static unsigned int cd_media_hddvd_r;
120 static unsigned int cd_media_hddvd_rw;
121 static unsigned int cd_media_mo;
122 static unsigned int cd_media_mrw;
123 static unsigned int cd_media_mrw_w;
125 static const char *cd_media_state;
126 static unsigned int cd_media_session_next;
127 static unsigned int cd_media_session_count;
128 static unsigned int cd_media_track_count;
129 static unsigned int cd_media_track_count_data;
130 static unsigned int cd_media_track_count_audio;
131 static unsigned long long int cd_media_session_last_offset;
133 #define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
134 #define SK(errcode) (((errcode) >> 16) & 0xF)
135 #define ASC(errcode) (((errcode) >> 8) & 0xFF)
136 #define ASCQ(errcode) ((errcode) & 0xFF)
138 static void info_scsi_cmd_err(const char *cmd, int err)
141 info("%s failed\n", cmd);
144 info("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
148 struct cdrom_generic_command cgc;
150 struct request_sense s;
153 struct sg_io_hdr sg_io;
156 static void scsi_cmd_set(struct scsi_cmd *cmd, size_t i, int arg)
159 memset(cmd, 0x00, sizeof(struct scsi_cmd));
161 cmd->cgc.sense = &cmd->_sense.s;
162 memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
163 cmd->sg_io.interface_id = 'S';
164 cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
165 cmd->sg_io.cmdp = cmd->cgc.cmd;
166 cmd->sg_io.sbp = cmd->_sense.u;
167 cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
169 cmd->sg_io.cmd_len = i + 1;
170 cmd->cgc.cmd[i] = arg;
173 #define CHECK_CONDITION 0x01
175 static int scsi_cmd_run(struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
179 cmd->sg_io.dxferp = buf;
180 cmd->sg_io.dxfer_len = bufsize;
181 cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
182 if (ioctl(fd, SG_IO, &cmd->sg_io))
185 if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
188 if (cmd->sg_io.masked_status & CHECK_CONDITION) {
189 ret = ERRCODE(cmd->_sense.u);
197 static int cd_capability_compat(int fd)
201 capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
203 info("CDROM_GET_CAPABILITY failed\n");
207 if (capabilty & CDC_CD_R)
209 if (capabilty & CDC_CD_RW)
211 if (capabilty & CDC_DVD)
213 if (capabilty & CDC_DVD_R)
215 if (capabilty & CDC_DVD_RAM)
217 if (capabilty & CDC_MRW)
219 if (capabilty & CDC_MRW_W)
224 static int cd_inquiry(int fd) {
226 unsigned char inq[128];
229 scsi_cmd_set(&sc, 0, 0x12);
230 scsi_cmd_set(&sc, 4, 36);
231 scsi_cmd_set(&sc, 5, 0);
232 err = scsi_cmd_run(&sc, fd, inq, 36);
234 info_scsi_cmd_err("INQUIRY", err);
238 if ((inq[0] & 0x1F) != 5) {
239 info("not an MMC unit\n");
243 info("INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
247 static int cd_profiles(int fd)
250 unsigned char header[8];
251 unsigned char profiles[512];
252 unsigned int cur_profile;
257 scsi_cmd_set(&sc, 0, 0x46);
258 scsi_cmd_set(&sc, 1, 0);
259 scsi_cmd_set(&sc, 8, sizeof(header));
260 scsi_cmd_set(&sc, 9, 0);
261 err = scsi_cmd_run(&sc, fd, header, sizeof(header));
263 info_scsi_cmd_err("GET CONFIGURATION", err);
267 len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
268 info("GET CONFIGURATION: number of profiles %i\n", len);
269 if (len > sizeof(profiles)) {
270 info("invalid number of profiles\n");
274 scsi_cmd_set(&sc, 0, 0x46);
275 scsi_cmd_set(&sc, 1, 1);
276 scsi_cmd_set(&sc, 6, len >> 16);
277 scsi_cmd_set(&sc, 7, len >> 8);
278 scsi_cmd_set(&sc, 8, len);
279 scsi_cmd_set(&sc, 9, 0);
280 err = scsi_cmd_run(&sc, fd, profiles, len);
282 info_scsi_cmd_err("GET CONFIGURATION", err);
286 /* device profiles */
287 for (i = 12; i < profiles[11]; i += 4) {
288 unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
291 info("profile 0x%02x\n", profile);
316 cd_dvd_plus_rw_dl = 1;
319 cd_dvd_plus_r_dl = 1;
345 /* current media profile */
346 cur_profile = header[6] << 8 | header[7];
347 info("current profile 0x%02x\n", cur_profile);
348 if (cur_profile == 0) {
349 info("no current profile, assuming no media\n");
353 switch (cur_profile) {
369 cd_media_dvd_rom = 1;
375 cd_media_dvd_ram = 1;
382 cd_media_dvd_plus_r = 1;
385 cd_media_dvd_plus_rw = 1;
388 cd_media_dvd_plus_rw_dl = 1;
391 cd_media_dvd_plus_r_dl = 1;
407 cd_media_hddvd_r = 1;
410 cd_media_hddvd_rw = 1;
418 static int cd_media_info(int fd)
421 unsigned char header[32];
422 static const char *media_status[] = {
430 scsi_cmd_set(&sc, 0, 0x51);
431 scsi_cmd_set(&sc, 8, sizeof(header));
432 scsi_cmd_set(&sc, 9, 0);
433 err = scsi_cmd_run(&sc, fd, header, sizeof(header));
435 info_scsi_cmd_err("READ DISC INFORMATION", err);
439 info("disk type %02x\n", header[8]);
441 if ((header[2] & 3) < 4)
442 cd_media_state = media_status[header[2] & 3];
443 if ((header[2] & 3) != 2)
444 cd_media_session_next = header[10] << 8 | header[5];
445 cd_media_session_count = header[9] << 8 | header[4];
446 cd_media_track_count = header[11] << 8 | header[6];
451 static int cd_media_toc(int fd)
454 unsigned char header[12];
455 unsigned char toc[2048];
460 scsi_cmd_set(&sc, 0, 0x43);
461 scsi_cmd_set(&sc, 6, 1);
462 scsi_cmd_set(&sc, 8, sizeof(header));
463 scsi_cmd_set(&sc, 9, 0);
464 err = scsi_cmd_run(&sc, fd, header, sizeof(header));
466 info_scsi_cmd_err("READ TOC", err);
470 len = (header[0] << 8 | header[1]) + 2;
471 info("READ TOC: len: %d\n", len);
472 if (len > sizeof(toc))
477 /* empty media has no tracks */
481 scsi_cmd_set(&sc, 0, 0x43);
482 scsi_cmd_set(&sc, 6, header[2]); /* First Track/Session Number */
483 scsi_cmd_set(&sc, 7, len >> 8);
484 scsi_cmd_set(&sc, 8, len);
485 scsi_cmd_set(&sc, 9, 0);
486 err = scsi_cmd_run(&sc, fd, toc, len);
488 info_scsi_cmd_err("READ TOC (tracks)", err);
492 for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
494 unsigned int is_data_track;
496 is_data_track = (p[1] & 0x04) != 0;
498 block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
499 info("track=%u info=0x%x(%s) start_block=%u\n",
500 p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
503 cd_media_track_count_data++;
505 cd_media_track_count_audio++;
508 scsi_cmd_set(&sc, 0, 0x43);
509 scsi_cmd_set(&sc, 2, 1); /* Session Info */
510 scsi_cmd_set(&sc, 8, 12);
511 scsi_cmd_set(&sc, 9, 0);
512 err = scsi_cmd_run(&sc, fd, header, sizeof(header));
514 info_scsi_cmd_err("READ TOC (multi session)", err);
517 len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
518 info("last track %u starts at block %u\n", header[4+2], len);
519 cd_media_session_last_offset = (unsigned long long int)len * 2048;
523 int main(int argc, char *argv[])
525 static const struct option options[] = {
526 { "export", 0, NULL, 'x' },
527 { "debug", 0, NULL, 'd' },
528 { "help", 0, NULL, 'h' },
531 const char *node = NULL;
536 logging_init("cdrom_id");
541 option = getopt_long(argc, argv, "dxh", options, NULL);
553 printf("Usage: cdrom_id [options] <device>\n"
554 " --export export key/value pairs\n"
555 " --debug debug to stderr\n"
556 " --help print this help text\n\n");
567 fprintf(stderr, "no device\n");
572 fd = open(node, O_RDONLY | O_NONBLOCK);
574 info("unable to open '%s'\n", node);
578 info("probing: '%s'\n", node);
580 /* same data as original cdrom_id */
581 if (cd_capability_compat(fd) < 0) {
587 if (cd_inquiry(fd) < 0) {
592 /* read drive and possibly current profile */
593 if (cd_profiles(fd) < 0)
596 /* get session/track info */
597 if (cd_media_toc(fd) < 0)
600 /* get writable media state */
601 if (cd_media_info(fd) < 0)
605 printf("ID_CDROM=1\n");
607 printf("ID_CDROM_CD=1\n");
609 printf("ID_CDROM_CD_R=1\n");
611 printf("ID_CDROM_CD_RW=1\n");
613 printf("ID_CDROM_DVD=1\n");
615 printf("ID_CDROM_DVD_R=1\n");
617 printf("ID_CDROM_DVD_RW=1\n");
619 printf("ID_CDROM_DVD_RAM=1\n");
621 printf("ID_CDROM_DVD_PLUS_R=1\n");
623 printf("ID_CDROM_DVD_PLUS_RW=1\n");
624 if (cd_dvd_plus_r_dl)
625 printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
626 if (cd_dvd_plus_rw_dl)
627 printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
629 printf("ID_CDROM_BD=1\n");
631 printf("ID_CDROM_BD_R=1\n");
633 printf("ID_CDROM_BD_RE=1\n");
635 printf("ID_CDROM_HDDVD=1\n");
637 printf("ID_CDROM_HDDVD_R=1\n");
639 printf("ID_CDROM_HDDVD_RW=1\n");
641 printf("ID_CDROM_MO=1\n");
643 printf("ID_CDROM_MRW=1\n");
645 printf("ID_CDROM_MRW_W=1\n");
648 printf("ID_CDROM_MEDIA_MO=1\n");
650 printf("ID_CDROM_MEDIA_MRW=1\n");
652 printf("ID_CDROM_MEDIA_MRW_W=1\n");
654 printf("ID_CDROM_MEDIA_CD=1\n");
656 printf("ID_CDROM_MEDIA_CD_R=1\n");
658 printf("ID_CDROM_MEDIA_CD_RW=1\n");
659 if (cd_media_dvd_rom)
660 printf("ID_CDROM_MEDIA_DVD=1\n");
662 printf("ID_CDROM_MEDIA_DVD_R=1\n");
663 if (cd_media_dvd_ram)
664 printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
666 printf("ID_CDROM_MEDIA_DVD_RW=1\n");
667 if (cd_media_dvd_plus_r)
668 printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
669 if (cd_media_dvd_plus_rw)
670 printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
671 if (cd_media_dvd_plus_rw_dl)
672 printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
673 if (cd_media_dvd_plus_r_dl)
674 printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
676 printf("ID_CDROM_MEDIA_BD=1\n");
678 printf("ID_CDROM_MEDIA_BD_R=1\n");
680 printf("ID_CDROM_MEDIA_BD_RE=1\n");
682 printf("ID_CDROM_MEDIA_HDDVD=1\n");
683 if (cd_media_hddvd_r)
684 printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
685 if (cd_media_hddvd_rw)
686 printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
688 if (cd_media_state != NULL)
689 printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
690 if (cd_media_session_next > 0)
691 printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
692 if (cd_media_session_count > 0)
693 printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
694 if (cd_media_track_count > 0)
695 printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
696 if (cd_media_track_count_audio > 0)
697 printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
698 if (cd_media_track_count_data > 0)
699 printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
700 if (cd_media_session_last_offset > 0)
701 printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);