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;
}
/* 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;
}
