static int cd_media_info(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char header[32];
static const char *media_status[] = {
"blank",
"appendable",
"complete",
"other"
};
int err;
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);
return -1;
};
info(udev, "disk type %02x\n", header[8]);
if ((header[2] & 3) < 4)
cd_media_state = media_status[header[2] & 3];
if ((header[2] & 3) != 2)
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];
return 0;
}
static int media_eject(int fd) {
struct scsi_cmd sc;
int err;
scsi_cmd_init(&sc);
scsi_cmd_set(&sc, 0, 0x1b);
scsi_cmd_set(&sc, 4, 0x02);
scsi_cmd_set(&sc, 5, 0);
err = scsi_cmd_run(&sc, fd, NULL, 0);
if ((err != 0)) {
info_scsi_cmd_err("START_STOP_UNIT", err);
return -1;
}
return 0;
}
/* returns 0 if media was detected */
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);
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) {
log_debug("no current profile, but disc is present; assuming CD-ROM");
cd_media_cd_rom = 1;
cd_media_track_count = 1;
cd_media_track_count_data = 1;
return 0;
} else {
log_debug("no current profile, assuming no media");
return -1;
}
};
cd_media = 1;
if (header[2] & 16) {
cd_media_cd_rw = 1;
log_debug("profile 0x0a media_cd_rw");
} else if ((header[2] & 3) < 2 && cd_cd_r) {
cd_media_cd_r = 1;
log_debug("profile 0x09 media_cd_r");
} else {
cd_media_cd_rom = 1;
log_debug("profile 0x08 media_cd_rom");
}
return 0;
}
static int cd_inquiry(struct udev *udev, int fd) {
struct scsi_cmd sc;
unsigned char inq[128];
int err;
scsi_cmd_set(udev, &sc, 0, 0x12);
scsi_cmd_set(udev, &sc, 4, 36);
scsi_cmd_set(udev, &sc, 5, 0);
err = scsi_cmd_run(udev, &sc, fd, inq, 36);
if ((err < 0)) {
info_scsi_cmd_err(udev, "INQUIRY", err);
return -1;
}
if ((inq[0] & 0x1F) != 5) {
info(udev, "not an MMC unit\n");
return -1;
}
info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
return 0;
}
static int cd_inquiry(int fd) {
struct scsi_cmd sc;
unsigned char inq[128];
int err;
scsi_cmd_init(&sc);
scsi_cmd_set(&sc, 0, 0x12);
scsi_cmd_set(&sc, 4, 36);
scsi_cmd_set(&sc, 5, 0);
err = scsi_cmd_run(&sc, fd, inq, 36);
if ((err != 0)) {
info_scsi_cmd_err("INQUIRY", err);
return -1;
}
if ((inq[0] & 0x1F) != 5) {
log_debug("not an MMC unit");
return -1;
}
log_debug("INQUIRY: [%.8s][%.16s][%.4s]", inq + 8, inq + 16, inq + 32);
return 0;
}
static int cd_media_toc(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char header[12];
unsigned char toc[2048];
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) & 0xff);
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 TOC", err);
return -1;
}
len = (header[0] << 8 | header[1]) + 2;
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)
return 0;
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) & 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)) {
info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
return -1;
}
/* 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;
is_data_track = (p[1] & 0x04) != 0;
block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
if (is_data_track)
cd_media_track_count_data++;
else
cd_media_track_count_audio++;
}
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, 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 TOC (multi session)", err);
return -1;
}
len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
info(udev, "last track %u starts at block %u\n", header[4+2], len);
cd_media_session_last_offset = (unsigned long long int)len * 2048;
return 0;
}
static int cd_media_info(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char header[32];
static const char *media_status[] = {
"blank",
"appendable",
"complete",
"other"
};
int err;
scsi_cmd_init(udev, &sc, header, sizeof(header));
scsi_cmd_set(udev, &sc, 0, 0x51);
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)) {
info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
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)
cd_media_state = media_status[header[2] & 3];
/* 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];
return 0;
}
static int cd_profiles(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char features[65530];
unsigned int cur_profile = 0;
unsigned int len;
unsigned int i;
int err;
/* First query the current profile */
scsi_cmd_init(udev, &sc, features, sizeof(features));
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 8, 8);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, features, 8);
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;
}
cur_profile = features[6] << 8 | features[7];
if (cur_profile > 0) {
info(udev, "current profile 0x%02x\n", cur_profile);
} else {
info(udev, "no current profile, assuming no media\n");
return -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_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:
info(udev, "profile 0x%02x <ignored>\n", cur_profile);
break;
}
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
info(udev, "GET CONFIGURATION: size of features buffer 0x%04x\n", len);
if (len > sizeof(features)) {
info(udev, "can not get features in a single query, truncating\n");
len = sizeof(features);
} else if (len <= 8) {
len = sizeof(features);
}
/* Now get the full feature buffer */
scsi_cmd_init(udev, &sc, features, len);
scsi_cmd_set(udev, &sc, 0, 0x46);
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, features, len);
if ((err != 0)) {
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
return -1;
}
/* parse the length once more, in case the drive decided to have other features suddenly :) */
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
info(udev, "GET CONFIGURATION: size of features buffer 0x%04x\n", len);
if (len > sizeof(features)) {
info(udev, "can not get features in a single query, truncating\n");
len = sizeof(features);
}
/* device features */
for (i = 8; i+4 < len; i += (4 + features[i+3])) {
unsigned int feature;
feature = features[i] << 8 | features[i+1];
switch (feature) {
case 0x00:
info(udev, "GET CONFIGURATION: feature 'profiles', with %i entries\n", features[i+3] / 4);
feature_profiles(udev, &features[i]+4, features[i+3]);
break;
default:
info(udev, "GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes\n", feature, features[i+3]);
break;
}
}
return 0;
}
static int cd_media_toc(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char header[12];
unsigned char toc[2048];
unsigned int len, i;
unsigned char *p;
int err;
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, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
if ((err < 0)) {
info_scsi_cmd_err(udev, "READ TOC", err);
return -1;
}
len = (header[0] << 8 | header[1]) + 2;
info(udev, "READ TOC: len: %d\n", len);
if (len > sizeof(toc))
return -1;
if (len < 2)
return -1;
/* empty media has no tracks */
if (len < 8)
return 0;
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, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, toc, len);
if ((err < 0)) {
info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
return -1;
}
for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
unsigned int block;
unsigned int is_data_track;
is_data_track = (p[1] & 0x04) != 0;
block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
info(udev, "track=%u info=0x%x(%s) start_block=%u\n",
p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
if (is_data_track)
cd_media_track_count_data++;
else
cd_media_track_count_audio++;
}
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, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
if ((err < 0)) {
info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
return -1;
}
len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
info(udev, "last track %u starts at block %u\n", header[4+2], len);
cd_media_session_last_offset = (unsigned long long int)len * 2048;
return 0;
}
static int cd_profiles(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char header[8];
unsigned char profiles[512];
unsigned int cur_profile;
unsigned int len;
unsigned int i;
int err;
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 1, 0);
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, "GET CONFIGURATION", err);
return -1;
}
len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
info(udev, "GET CONFIGURATION: number of profiles %i\n", len);
if (len > sizeof(profiles)) {
info(udev, "invalid number of profiles\n");
return -1;
}
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 1, 1);
scsi_cmd_set(udev, &sc, 6, len >> 16);
scsi_cmd_set(udev, &sc, 7, len >> 8);
scsi_cmd_set(udev, &sc, 8, len);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, profiles, len);
if ((err < 0)) {
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
return -1;
}
/* device profiles */
for (i = 12; i < profiles[11]; i += 4) {
unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
if (profile == 0)
continue;
info(udev, "profile 0x%02x\n", profile);
switch (profile) {
case 0x03:
case 0x04:
case 0x05:
cd_mo = 1;
break;
case 0x10:
cd_dvd_rom = 1;
break;
case 0x12:
cd_dvd_ram = 1;
break;
case 0x13:
case 0x14:
cd_dvd_rw = 1;
break;
case 0x1B:
cd_dvd_plus_r = 1;
break;
case 0x1A:
cd_dvd_plus_rw = 1;
break;
case 0x2A:
cd_dvd_plus_rw_dl = 1;
break;
case 0x2B:
cd_dvd_plus_r_dl = 1;
break;
case 0x40:
cd_bd = 1;
break;
case 0x41:
case 0x42:
cd_bd_r = 1;
break;
case 0x43:
cd_bd_re = 1;
break;
case 0x50:
cd_hddvd = 1;
break;
case 0x51:
cd_hddvd_r = 1;
break;
case 0x52:
cd_hddvd_rw = 1;
break;
default:
break;
}
}
/* current media profile */
cur_profile = header[6] << 8 | header[7];
info(udev, "current profile 0x%02x\n", cur_profile);
if (cur_profile == 0) {
info(udev, "no current profile, assuming no media\n");
return -1;
}
switch (cur_profile) {
case 0x03:
case 0x04:
case 0x05:
cd_media_mo = 1;
break;
case 0x08:
cd_media_cd_rom = 1;
break;
case 0x09:
cd_media_cd_r = 1;
break;
case 0x0a:
cd_media_cd_rw = 1;
break;
case 0x10:
cd_media_dvd_rom = 1;
break;
case 0x11:
cd_media_dvd_r = 1;
break;
case 0x12:
cd_media_dvd_ram = 1;
break;
case 0x13:
case 0x14:
cd_media_dvd_rw = 1;
break;
case 0x1B:
cd_media_dvd_plus_r = 1;
break;
case 0x1A:
cd_media_dvd_plus_rw = 1;
break;
case 0x2A:
cd_media_dvd_plus_rw_dl = 1;
break;
case 0x2B:
cd_media_dvd_plus_r_dl = 1;
break;
case 0x40:
cd_media_bd = 1;
break;
case 0x41:
case 0x42:
cd_media_bd_r = 1;
break;
case 0x43:
cd_media_bd_re = 1;
break;
case 0x50:
cd_media_hddvd = 1;
break;
case 0x51:
cd_media_hddvd_r = 1;
break;
case 0x52:
cd_media_hddvd_rw = 1;
break;
default:
break;
}
return 0;
}
/* returns 0 if media was detected */
static int cd_profiles(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned char features[65530];
unsigned int cur_profile = 0;
unsigned int len;
unsigned int i;
int err;
int ret;
ret = -1;
/* First query the current profile */
scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x46);
scsi_cmd_set(udev, &sc, 8, 8);
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, features, 8);
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 && IN_SET(ASC(err), 0x20, 0x24)) {
log_debug("drive is pre-MMC2 and does not support 46h get configuration command");
log_debug("trying to work around the problem");
ret = cd_profiles_old_mmc(udev, fd);
}
goto out;
}
cur_profile = features[6] << 8 | features[7];
if (cur_profile > 0) {
log_debug("current profile 0x%02x", cur_profile);
feature_profile_media (udev, cur_profile);
ret = 0; /* we have media */
} else {
log_debug("no current profile, assuming no media");
}
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
if (len > sizeof(features)) {
log_debug("cannot get features in a single query, truncating");
len = sizeof(features);
} else if (len <= 8)
len = sizeof(features);
/* Now get the full feature buffer */
scsi_cmd_init(udev, &sc);
scsi_cmd_set(udev, &sc, 0, 0x46);
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, features, len);
if ((err != 0)) {
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
return -1;
}
/* parse the length once more, in case the drive decided to have other features suddenly :) */
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
if (len > sizeof(features)) {
log_debug("cannot get features in a single query, truncating");
len = sizeof(features);
}
/* device features */
for (i = 8; i+4 < len; i += (4 + features[i+3])) {
unsigned int feature;
feature = features[i] << 8 | features[i+1];
switch (feature) {
case 0x00:
log_debug("GET CONFIGURATION: feature 'profiles', with %i entries", features[i+3] / 4);
feature_profiles(udev, &features[i]+4, MIN(features[i+3], len - i - 4));
break;
default:
log_debug("GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes", feature, features[i+3]);
break;
}
}
out:
return ret;
}
