static unsigned int cd_media_dvd_rom = 0;
static unsigned int cd_media_dvd_r = 0;
static unsigned int cd_media_dvd_rw = 0;
+static unsigned int cd_media_dvd_rw_ro = 0; /* restricted overwrite mode */
+static unsigned int cd_media_dvd_rw_seq = 0; /* sequential mode */
static unsigned int cd_media_dvd_ram = 0;
static unsigned int cd_media_dvd_plus_r = 0;
static unsigned int cd_media_dvd_plus_rw = 0;
info(udev, "profile 0x%02x mo\n", profile);
cd_mo = 1;
break;
+ case 0x08:
+ info(udev, "profile 0x%02x cd_rom\n", profile);
+ cd_cd_rom = 1;
+ break;
+ case 0x09:
+ info(udev, "profile 0x%02x cd_r\n", profile);
+ cd_cd_r = 1;
+ break;
+ case 0x0A:
+ info(udev, "profile 0x%02x cd_rw\n", profile);
+ cd_cd_rw = 1;
+ break;
case 0x10:
info(udev, "profile 0x%02x dvd_rom\n", profile);
cd_dvd_rom = 1;
return 0;
}
+static int cd_profiles_old_mmc(struct udev *udev, int fd)
+{
+ struct scsi_cmd sc;
+ int err;
+
+ unsigned char header[32];
+
+ scsi_cmd_init(udev, &sc, header, sizeof(header));
+ scsi_cmd_set(udev, &sc, 0, 0x51);
+ scsi_cmd_set(udev, &sc, 8, sizeof(header));
+ scsi_cmd_set(udev, &sc, 9, 0);
+ err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
+ if (cd_media == 1) {
+ info(udev, "no current profile, but disc is present; assuming CD-ROM\n");
+ cd_media_cd_rom = 1;
+ return 0;
+ } else {
+ info(udev, "no current profile, assuming no media\n");
+ return -1;
+ }
+ };
+
+ cd_media = 1;
+
+ if (header[2] & 16) {
+ cd_media_cd_rw = 1;
+ info(udev, "profile 0x0a media_cd_rw\n");
+ } else if ((header[2] & 3) < 2 && cd_cd_r) {
+ cd_media_cd_r = 1;
+ info(udev, "profile 0x09 media_cd_r\n");
+ } else {
+ cd_media_cd_rom = 1;
+ info(udev, "profile 0x08 media_cd_rom\n");
+ }
+ return 0;
+}
+
static int cd_profiles(struct udev *udev, int fd)
{
struct scsi_cmd sc;
err = scsi_cmd_run(udev, &sc, fd, features, sizeof(features));
if ((err != 0)) {
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
+ /* handle pre-MMC2 drives which do not support GET CONFIGURATION */
+ if (SK(err) == 0x5 && ASC(err) == 0x20) {
+ info(udev, "drive is pre-MMC2 and does not support 46h get configuration command\n");
+ info(udev, "trying to work around the problem\n");
+ return cd_profiles_old_mmc(udev, fd);
+ }
return -1;
}
return -1;
}
- cd_media = 1;
-
switch (cur_profile) {
case 0x03:
case 0x04:
case 0x05:
info(udev, "profile 0x%02x \n", cur_profile);
+ cd_media = 1;
cd_media_mo = 1;
break;
case 0x08:
info(udev, "profile 0x%02x media_cd_rom\n", cur_profile);
+ cd_media = 1;
cd_media_cd_rom = 1;
break;
case 0x09:
info(udev, "profile 0x%02x media_cd_r\n", cur_profile);
+ cd_media = 1;
cd_media_cd_r = 1;
break;
case 0x0a:
info(udev, "profile 0x%02x media_cd_rw\n", cur_profile);
+ cd_media = 1;
cd_media_cd_rw = 1;
break;
case 0x10:
info(udev, "profile 0x%02x media_dvd_ro\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_rom = 1;
break;
case 0x11:
info(udev, "profile 0x%02x media_dvd_r\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_r = 1;
break;
case 0x12:
info(udev, "profile 0x%02x media_dvd_ram\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_ram = 1;
break;
case 0x13:
+ info(udev, "profile 0x%02x media_dvd_rw_ro\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_rw = 1;
+ cd_media_dvd_rw_ro = 1;
+ break;
case 0x14:
- info(udev, "profile 0x%02x media_dvd_rw\n", cur_profile);
+ info(udev, "profile 0x%02x media_dvd_rw_seq\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_rw = 1;
+ cd_media_dvd_rw_seq = 1;
break;
case 0x1B:
info(udev, "profile 0x%02x media_dvd_plus_r\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_plus_r = 1;
break;
case 0x1A:
info(udev, "profile 0x%02x media_dvd_plus_rw\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_plus_rw = 1;
break;
case 0x2A:
info(udev, "profile 0x%02x media_dvd_plus_rw_dl\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_plus_rw_dl = 1;
break;
case 0x2B:
info(udev, "profile 0x%02x media_dvd_plus_r_dl\n", cur_profile);
+ cd_media = 1;
cd_media_dvd_plus_r_dl = 1;
break;
case 0x40:
info(udev, "profile 0x%02x media_bd\n", cur_profile);
+ cd_media = 1;
cd_media_bd = 1;
break;
case 0x41:
case 0x42:
info(udev, "profile 0x%02x media_bd_r\n", cur_profile);
+ cd_media = 1;
cd_media_bd_r = 1;
break;
case 0x43:
info(udev, "profile 0x%02x media_bd_re\n", cur_profile);
+ cd_media = 1;
cd_media_bd_re = 1;
break;
case 0x50:
info(udev, "profile 0x%02x media_hddvd\n", cur_profile);
+ cd_media = 1;
cd_media_hddvd = 1;
break;
case 0x51:
info(udev, "profile 0x%02x media_hddvd_r\n", cur_profile);
+ cd_media = 1;
cd_media_hddvd_r = 1;
break;
case 0x52:
info(udev, "profile 0x%02x media_hddvd_rw\n", cur_profile);
+ cd_media = 1;
cd_media_hddvd_rw = 1;
break;
default:
scsi_cmd_init(udev, &sc, header, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x51);
- scsi_cmd_set(udev, &sc, 8, sizeof(header));
+ scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
if ((err != 0)) {
return -1;
};
+ cd_media = 1;
info(udev, "disk type %02x\n", header[8]);
+ info(udev, "hardware reported media status: %s\n", media_status[header[2] & 3]);
/* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
- if (!cd_media_cd_rom && (header[2] & 3) < 4)
+ if (!cd_media_cd_rom)
cd_media_state = media_status[header[2] & 3];
- if ((header[2] & 3) != 2)
+ /* fresh DVD-RW in restricted overwite mode reports itself as
+ * "appendable"; change it to "blank" to make it consistent with what
+ * gets reported after blanking, and what userspace expects */
+ if (cd_media_dvd_rw_ro && (header[2] & 3) == 1)
+ cd_media_state = media_status[0];
+
+ /* DVD+RW discs (and DVD-RW in restricted mode) once formatted are
+ * always "complete", DVD-RAM are "other" or "complete" if the disc is
+ * write protected; we need to check the contents if it is blank */
+ if ((cd_media_dvd_rw_ro || cd_media_dvd_plus_rw || cd_media_dvd_plus_rw_dl || cd_media_dvd_ram) && (header[2] & 3) > 1) {
+ unsigned char buffer[32 * 2048];
+ unsigned char result, len;
+ int block, offset;
+
+ if (cd_media_dvd_ram) {
+ /* a write protected dvd-ram may report "complete" status */
+
+ unsigned char dvdstruct[8];
+ unsigned char format[12];
+
+ scsi_cmd_init(udev, &sc, dvdstruct, sizeof(dvdstruct));
+ scsi_cmd_set(udev, &sc, 0, 0xAD);
+ scsi_cmd_set(udev, &sc, 7, 0xC0);
+ scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct));
+ scsi_cmd_set(udev, &sc, 11, 0);
+ err = scsi_cmd_run(udev, &sc, fd, dvdstruct, sizeof(dvdstruct));
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "READ DVD STRUCTURE", err);
+ return -1;
+ }
+ if (dvdstruct[4] & 0x02) {
+ cd_media_state = media_status[2];
+ info(udev, "write-protected DVD-RAM media inserted\n");
+ goto determined;
+ }
+
+ /* let's make sure we don't try to read unformatted media */
+ scsi_cmd_init(udev, &sc, format, sizeof(format));
+ scsi_cmd_set(udev, &sc, 0, 0x23);
+ scsi_cmd_set(udev, &sc, 8, sizeof(format));
+ scsi_cmd_set(udev, &sc, 9, 0);
+ err = scsi_cmd_run(udev, &sc, fd, format, sizeof(format));
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "READ DVD FORMAT CAPACITIES", err);
+ return -1;
+ }
+
+ len = format[3];
+ if (len & 7 || len < 16) {
+ info(udev, "invalid format capacities length\n");
+ return -1;
+ }
+
+ switch(format[8] & 3) {
+ case 1:
+ info(udev, "unformatted DVD-RAM media inserted\n");
+ /* This means that last format was interrupted
+ * or failed, blank dvd-ram discs are factory
+ * formatted. Take no action here as it takes
+ * quite a while to reformat a dvd-ram and it's
+ * not automatically started */
+ goto determined;
+
+ case 2:
+ info(udev, "formatted DVD-RAM media inserted\n");
+ break;
+
+ case 3:
+ cd_media = 0; //return no media
+ info(udev, "format capacities returned no media\n");
+ return -1;
+ }
+ }
+
+ /* Take a closer look at formatted media (unformatted DVD+RW
+ * has "blank" status", DVD-RAM was examined earlier) and check
+ * for ISO and UDF PVDs or a fs superblock presence and do it
+ * in one ioctl (we need just sectors 0 and 16) */
+ scsi_cmd_init(udev, &sc, buffer, sizeof(buffer));
+ scsi_cmd_set(udev, &sc, 0, 0x28);
+ scsi_cmd_set(udev, &sc, 5, 0);
+ scsi_cmd_set(udev, &sc, 8, 32);
+ scsi_cmd_set(udev, &sc, 9, 0);
+ err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err);
+ return -1;
+ }
+
+ /* if any non-zero data is found in sector 16 (iso and udf) or
+ * eventually 0 (fat32 boot sector, ext2 superblock, etc), disc
+ * is assumed non-blank */
+ result = 0;
+
+ for (block = 32768; block >= 0 && !result; block -= 32768) {
+ offset = block;
+ while (offset < (block + 2048) && !result) {
+ result = buffer [offset];
+ offset++;
+ }
+ }
+
+ if (!result) {
+ cd_media_state = media_status[0];
+ info(udev, "no data in blocks 0 or 16, assuming blank\n");
+ } else {
+ info(udev, "data in blocks 0 or 16, assuming complete\n");
+ }
+ }
+
+determined:
+ /* "other" is e. g. DVD-RAM, can't append sessions there; DVDs in
+ * restricted overwrite mode can never append, only in sequential mode */
+ if ((header[2] & 3) < 2 && !cd_media_dvd_rw_ro)
cd_media_session_next = header[10] << 8 | header[5];
cd_media_session_count = header[9] << 8 | header[4];
cd_media_track_count = header[11] << 8 | header[6];
struct scsi_cmd sc;
unsigned char header[12];
unsigned char toc[2048];
- unsigned int len, i;
+ unsigned int len, i, num_tracks;
unsigned char *p;
int err;
scsi_cmd_init(udev, &sc, header, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 6, 1);
- scsi_cmd_set(udev, &sc, 8, sizeof(header));
+ scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
if ((err != 0)) {
}
len = (header[0] << 8 | header[1]) + 2;
- info(udev, "READ TOC: len: %d\n", len);
+ info(udev, "READ TOC: len: %d, start track: %d, end track: %d\n", len, header[2], header[3]);
if (len > sizeof(toc))
return -1;
if (len < 2)
return -1;
+ /* 2: first track, 3: last track */
+ num_tracks = header[3] - header[2] + 1;
/* empty media has no tracks */
if (len < 8)
scsi_cmd_init(udev, &sc, toc, sizeof(toc));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
- scsi_cmd_set(udev, &sc, 7, len >> 8);
- scsi_cmd_set(udev, &sc, 8, len);
+ scsi_cmd_set(udev, &sc, 7, (len >> 8) & 0xff);
+ scsi_cmd_set(udev, &sc, 8, len & 0xff);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, toc, len);
if ((err != 0)) {
return -1;
}
- for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
+ /* Take care to not iterate beyond the last valid track as specified in
+ * the TOC, but also avoid going beyond the TOC length, just in case
+ * the last track number is invalidly large */
+ for (p = toc+4, i = 4; i < len-8 && num_tracks > 0; i += 8, p += 8, --num_tracks) {
unsigned int block;
unsigned int is_data_track;
scsi_cmd_init(udev, &sc, header, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x43);
scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
- scsi_cmd_set(udev, &sc, 8, 12);
+ scsi_cmd_set(udev, &sc, 8, sizeof(header));
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
if ((err != 0)) {
goto print;
/* get session/track info */
- if (cd_media_toc(udev, fd) < 0)
- goto print;
+ cd_media_toc(udev, fd);
/* get writable media state */
- if (cd_media_info(udev, fd) < 0)
- goto print;
+ cd_media_info(udev, fd);
print:
printf("ID_CDROM=1\n");
printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
if (cd_media_session_count > 0)
printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
+ if (cd_media_session_count > 1 && cd_media_session_last_offset > 0)
+ printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);
if (cd_media_track_count > 0)
printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
if (cd_media_track_count_audio > 0)
printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
if (cd_media_track_count_data > 0)
printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
- if (cd_media_session_last_offset > 0)
- printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);
exit:
if (fd >= 0)
close(fd);
~ianmdlvl / elogind.git / blobdiff