NTSTATUS
LsuGetDiskInfoBlockV1(
IN PLANSCSI_SESSION LSS,
OUT PNDAS_DIB DiskInformationBlock,
IN UINT64 LogicalBlockAddress,
IN ULONG BlockBytes,
IN ULONG PduFlags
) {
NTSTATUS status;
status = LsuReadBlocks(LSS, (PBYTE)DiskInformationBlock, LogicalBlockAddress, 1, BlockBytes, PduFlags);
if(!NT_SUCCESS(status)) {
return status;
}
if( DiskInformationBlock->Signature != NDAS_DIB_SIGNATURE ||
IS_NDAS_DIBV1_WRONG_VERSION(*DiskInformationBlock) ) {
status = STATUS_REVISION_MISMATCH;
KDPrintM(DBG_OTHER_ERROR,
("Error: Revision mismatch. Signature:0x%08lx, Revision:%d.%d\n",
DiskInformationBlock->Signature,
DiskInformationBlock->MajorVersion,
DiskInformationBlock->MinorVersion
));
}
return status;
}
NTSTATUS
LsuGetDiskInfoBlockV2(
PLANSCSI_SESSION LSS,
PNDAS_DIB_V2 DiskInformationBlock,
UINT64 LogicalBlockAddress,
ULONG PduFlags
) {
NTSTATUS status;
status = LsuReadBlocks(LSS, (PBYTE)DiskInformationBlock, LogicalBlockAddress, 1, PduFlags);
if(!NT_SUCCESS(status)) {
return status;
}
//
// Revision check
//
if( DiskInformationBlock->Signature != NDAS_DIB_V2_SIGNATURE ||
IS_HIGHER_VERSION_V2(*DiskInformationBlock) ) {
status = STATUS_REVISION_MISMATCH;
KDPrintM(DBG_PROTO_ERROR,
("Error: Revision mismatch. Signature:0x%08lx, Revision:%u.%u\n",
DiskInformationBlock->Signature,
DiskInformationBlock->MajorVersion,
DiskInformationBlock->MinorVersion
));
}
return status;
}
NTSTATUS
LsuGetDiskInfoBlockV2(
IN PLANSCSI_SESSION LSS,
OUT PNDAS_DIB_V2 DiskInformationBlock,
IN UINT64 LogicalBlockAddress,
IN ULONG BlockBytes,
IN ULONG PduFlags
) {
NTSTATUS status;
status = LsuReadBlocks(LSS, (PBYTE)DiskInformationBlock, LogicalBlockAddress, 1, BlockBytes, PduFlags);
if(!NT_SUCCESS(status)) {
return status;
}
//
// Revision check
//
if( DiskInformationBlock->Signature != NDAS_DIB_V2_SIGNATURE ||
IS_HIGHER_VERSION_V2(*DiskInformationBlock) ) {
status = STATUS_REVISION_MISMATCH;
KDPrintM(DBG_OTHER_ERROR,
("Error: Revision mismatch. Signature:0x%08lx, Revision:%u.%u\n",
DiskInformationBlock->Signature,
DiskInformationBlock->MajorVersion,
DiskInformationBlock->MinorVersion
));
}
//
// CRC check.
//
if(NT_SUCCESS(status)) {
if(IS_DIB_CRC_VALID(crc32_calc, *DiskInformationBlock) != TRUE) {
KDPrintM(DBG_OTHER_ERROR, ("DIBv2's crc is invalid.\n"));
status = STATUS_REVISION_MISMATCH;
}
}
return status;
}
NTSTATUS
LsuGetBlockACL(
IN PLANSCSI_SESSION LSS,
OUT PBLOCK_ACCESS_CONTROL_LIST BlockACL,
IN ULONG BlockACLLen,
IN UINT64 LogicalBlockAddress,
IN ULONG BlockBytes,
IN ULONG PduFlags
) {
NTSTATUS status;
ULONG readBlock;
PBYTE buffer;
ASSERT(BlockBytes);
ASSERT(BlockACLLen);
//
// allocate block buffer
//
readBlock = (BlockACLLen + BlockBytes) / BlockBytes;
buffer = (PBYTE)ExAllocatePoolWithTag(NonPagedPool, readBlock * BlockBytes, LSU_POOLTAG_BLOCKBUFFER);
if(buffer == NULL)
return STATUS_INSUFFICIENT_RESOURCES;
status = LsuReadBlocks(LSS, buffer, LogicalBlockAddress, readBlock, BlockBytes, PduFlags);
if(!NT_SUCCESS(status)) {
ExFreePoolWithTag(buffer, LSU_POOLTAG_BLOCKBUFFER);
return status;
}
//
// Copy to the caller's buffer
//
RtlCopyMemory(BlockACL, buffer, BlockACLLen);
//
// Free the buffer
//
ExFreePoolWithTag(buffer, LSU_POOLTAG_BLOCKBUFFER);
//
// Revision check
//
if( BlockACL->Signature != BACL_SIGNATURE ||
BlockACL->Version != BACL_VERSION) {
status = STATUS_REVISION_MISMATCH;
KDPrintM(DBG_OTHER_ERROR,
("Error: Revision mismatch. Signature:0x%08lx, Version:%u\n",
BlockACL->Signature,
BlockACL->Version));
}
//
// CRC check.
//
if(NT_SUCCESS(status)) {
UINT32 crc;
crc = crc32_calc((PUCHAR)BlockACL->Elements,
BlockACL->ElementCount * sizeof(BLOCK_ACCESS_CONTROL_LIST_ELEMENT));
if(crc != BlockACL->crc) {
KDPrintM(DBG_OTHER_ERROR, ("BACL's crc is invalid.\n"));
return STATUS_REVISION_MISMATCH;
}
}
return status;
}
