return 0;
}
+static void feature_profile_media(struct udev *udev, int cur_profile)
+{
+ 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;
+ }
+}
+
static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size)
{
unsigned int i;
return 0;
}
+/* returns 0 if media was detected */
static int cd_profiles_old_mmc(struct udev *udev, int fd)
{
struct scsi_cmd sc;
return 0;
}
+/* returns 0 if media was detected */
static int cd_profiles(struct udev *udev, int fd)
{
struct scsi_cmd sc;
unsigned int len;
unsigned int i;
int err;
+ int ret;
+ ret = -1;
+
+ /* 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, 7, (sizeof(features) >> 8) & 0xff);
- scsi_cmd_set(udev, &sc, 8, sizeof(features) & 0xff);
+ scsi_cmd_set(udev, &sc, 8, 8);
scsi_cmd_set(udev, &sc, 9, 0);
- err = scsi_cmd_run(udev, &sc, fd, features, sizeof(features));
+ 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);
+ ret = cd_profiles_old_mmc(udev, fd);
}
+ goto out;
+ }
+
+ cur_profile = features[6] << 8 | features[7];
+ if (cur_profile > 0) {
+ info(udev, "current profile 0x%02x\n", cur_profile);
+ feature_profile_media (udev, cur_profile);
+ ret = 0; /* we have media */
+ } else {
+ info(udev, "no current profile, assuming no media\n");
+ }
+
+ 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);
break;
}
}
-
- 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;
- }
- return 0;
+out:
+ return ret;
}
static int cd_media_info(struct udev *udev, int fd)
scsi_cmd_set(udev, &sc, 9, 0);
err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
if ((err != 0)) {
+ cd_media = 0;
info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err);
return -1;
}
{
struct scsi_cmd sc;
unsigned char header[12];
- unsigned char toc[2048];
- unsigned int len, i;
+ unsigned char toc[65536];
+ unsigned int len, i, num_tracks;
unsigned char *p;
int err;
}
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)
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;
goto print;
/* read drive and possibly current profile */
- if (cd_profiles(udev, fd) < 0)
+ if (cd_profiles(udev, fd) != 0)
goto print;
+ /* at this point we are guaranteed to have media in the
+ * drive - find out more about it */
+
/* get session/track info */
cd_media_toc(udev, fd);
~ianmdlvl / elogind.git / blobdiff