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* Fixed some coding style violation introduced in my previous commit. Thanks Axel!

Browse Source 
The recognition code is actually working, I was just using the wrong dvd. I'm now
using an iso file created with mkisofs.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27085 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Salvatore Benedetto
2008-08-20 17:04:01 +00:00
parent feea37380d
commit e1d037ce88
1 changed files with 19 additions and 15 deletions
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src/add-ons/kernel/file_systems/udf/Recognition.cpp
+19 -15
View File
@@ -39,26 +39,25 @@ walk_integrity_sequence(int device, uint32 blockSize, uint32 blockShift,
status_t
udf_recognize(int device, off_t offset, off_t length, uint32 blockSize,
uint32 &blockShift, logical_volume_descriptor &logicalVolumeDescriptor,
partition_descriptor partitionDescriptors[],
uint8 &partitionDescriptorCount)
uint32 &blockShift, logical_volume_descriptor &logicalVolumeDescriptor,
partition_descriptor partitionDescriptors[],
uint8 &partitionDescriptorCount)
{
TRACE(("udf_recognize: device: = %d, offset = %Ld, length = %Ld, "
"blockSize = %ld, [...descriptors, etc...]\n", device, offset,
length, blockSize));
"blockSize = %ld, ", device, offset, length, blockSize));
// Check the block size
status_t status = get_block_shift(blockSize, blockShift);
if (status != B_OK) {
TRACE_ERROR(("udf_recognize: Block size must be a positive power of "
TRACE_ERROR(("\nudf_recognize: Block size must be a positive power of "
"two! (blockSize = %ld)\n", blockSize));
return status;
}
TRACE(("udf_recognize: blockShift: %ld\n", blockShift));
TRACE(("blockShift: %ld\n", blockShift));
// Check for a valid volume recognition sequence
status = walk_volume_recognition_sequence(device, offset, blockSize,
blockShift);
blockShift);
if (status != B_OK) {
TRACE_ERROR(("udf_recognize: Invalid sequence. status = %d\n", status));
return status;
@@ -66,8 +65,8 @@ udf_recognize(int device, off_t offset, off_t length, uint32 blockSize,
// Now hunt down a volume descriptor sequence from one of
// the anchor volume pointers (if there are any).
status = walk_anchor_volume_descriptor_sequences(device, offset, length,
blockSize, blockShift, logicalVolumeDescriptor,
partitionDescriptors, partitionDescriptorCount);
blockSize, blockShift, logicalVolumeDescriptor,
partitionDescriptors, partitionDescriptorCount);
if (status != B_OK) {
TRACE_ERROR(("udf_recognize: cannot find volume descriptor. status = %d\n",
status));
@@ -76,7 +75,7 @@ udf_recognize(int device, off_t offset, off_t length, uint32 blockSize,
// Now walk the integrity sequence and make sure the last integrity
// descriptor is a closed descriptor
status = walk_integrity_sequence(device, blockSize, blockShift,
logicalVolumeDescriptor.integrity_sequence_extent());
logicalVolumeDescriptor.integrity_sequence_extent());
if (status != B_OK) {
TRACE_ERROR(("udf_recognize: last integrity descriptor not closed. "
"status = %d\n", status));
@@ -92,8 +91,13 @@ udf_recognize(int device, off_t offset, off_t length, uint32 blockSize,
static
status_t
walk_volume_recognition_sequence(int device, off_t offset, uint32 blockSize, uint32 blockShift)
walk_volume_recognition_sequence(int device, off_t offset, uint32 blockSize,
uint32 blockShift)
{
TRACE(("walk_volume_recognition_sequence: device = %d, offset = %Ld, "
"blockSize = %ld, blockShift = %d\n", device, offset, blockSize,
blockShift));
// vrs starts at block 16. Each volume structure descriptor (vsd)
// should be one block long. We're expecting to find 0 or more iso9660
// vsd's followed by some ECMA-167 vsd's.
@@ -110,11 +114,11 @@ walk_volume_recognition_sequence(int device, off_t offset, uint32 blockSize, uin
bool foundECMA168 = false;
bool foundBoot = false;
for (uint32 block = 16; true; block++) {
TRACE(("walk_volume_recognition_sequence: block %ld: ", block));
off_t address = (offset + block) << blockShift;
TRACE(("walk_volume_recognition_sequence: block = %ld, "
"address = %d, ", block, address));
ssize_t bytesRead = read_pos(device, address, chunk.Data(), blockSize);
if (bytesRead == (ssize_t)blockSize)
{
if (bytesRead == (ssize_t)blockSize) {
volume_structure_descriptor_header* descriptor
= (volume_structure_descriptor_header *)(chunk.Data());
if (descriptor->id_matches(kVSDID_ISO)) {