Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Session: try harder to read the disc geometry.

Browse Source 
On some discs and drives, the command may not work the first time.
Trying a second time succeeds more often.

Fixes #11467.
This commit is contained in:
Adrien Destugues 2014-11-14 16:00:37 +01:00
parent b31d5cd2b6
commit 3c3eb09760
1 changed files with 15 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/add-ons/kernel/partitioning_systems/session/Disc.cpp
View File

@ -275,23 +275,26 @@ read_table_of_contents(int deviceFD, uint32 first_session, uchar* buffer,
memset(raw_command.sense_data, 0, raw_command.sense_data_length);
raw_command.timeout = kScsiTimeout;
if (ioctl(deviceFD, B_RAW_DEVICE_COMMAND, &raw_command) == 0) {
if (raw_command.scsi_status == 0 && raw_command.cam_status == 1) {
// SUCCESS!!!
DBG(dump_full_table_of_contents(buffer, buffer_length));
// This does not always work on the first try, so do it twice just in case.
for (int attempt = 0; attempt < 2; attempt++) {
if (ioctl(deviceFD, B_RAW_DEVICE_COMMAND, &raw_command) == 0) {
if (raw_command.scsi_status == 0 && raw_command.cam_status == 1) {
// SUCCESS!!!
DBG(dump_full_table_of_contents(buffer, buffer_length));
return B_OK;
} else {
error = B_FILE_ERROR;
TRACE(("%s: scsi ioctl succeeded, but scsi command failed\n",
kModuleDebugName));
}
} else {
error = B_FILE_ERROR;
TRACE(("%s: scsi ioctl succeeded, but scsi command failed\n",
kModuleDebugName));
error = errno;
TRACE(("%s: scsi command failed with error 0x%" B_PRIx32 "\n",
kModuleDebugName, error));
}
} else {
error = errno;
TRACE(("%s: scsi command failed with error 0x%" B_PRIx32 "\n",
kModuleDebugName, error));
}
return error;
}