BOOLEAN CMAPI
HvSyncHive(
PHHIVE RegistryHive)
{
ASSERT(RegistryHive->ReadOnly == FALSE);
if (RtlFindSetBits(&RegistryHive->DirtyVector, 1, 0) == ~0U)
{
return TRUE;
}
/* Update hive header modification time */
KeQuerySystemTime(&RegistryHive->BaseBlock->TimeStamp);
/* Update log file */
if (!HvpWriteLog(RegistryHive))
{
return FALSE;
}
/* Update hive file */
if (!HvpWriteHive(RegistryHive, TRUE))
{
return FALSE;
}
/* Clear dirty bitmap. */
RtlClearAllBits(&RegistryHive->DirtyVector);
RegistryHive->DirtyCount = 0;
return TRUE;
}
static BOOLEAN CMAPI
HvpWriteHive(
PHHIVE RegistryHive,
BOOLEAN OnlyDirty)
{
ULONG FileOffset;
ULONG BlockIndex;
ULONG LastIndex;
PVOID BlockPtr;
BOOLEAN Success;
ASSERT(RegistryHive->ReadOnly == FALSE);
ASSERT(RegistryHive->BaseBlock->Length ==
RegistryHive->Storage[Stable].Length * HV_BLOCK_SIZE);
DPRINT("HvpWriteHive called\n");
if (RegistryHive->BaseBlock->Sequence1 !=
RegistryHive->BaseBlock->Sequence2)
{
return FALSE;
}
/* Update first update counter and CheckSum */
RegistryHive->BaseBlock->Type = HFILE_TYPE_PRIMARY;
RegistryHive->BaseBlock->Sequence1++;
RegistryHive->BaseBlock->CheckSum =
HvpHiveHeaderChecksum(RegistryHive->BaseBlock);
/* Write hive block */
FileOffset = 0;
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_PRIMARY,
&FileOffset, RegistryHive->BaseBlock,
sizeof(HBASE_BLOCK));
if (!Success)
{
return FALSE;
}
BlockIndex = 0;
while (BlockIndex < RegistryHive->Storage[Stable].Length)
{
if (OnlyDirty)
{
LastIndex = BlockIndex;
BlockIndex = RtlFindSetBits(&RegistryHive->DirtyVector, 1, BlockIndex);
if (BlockIndex == ~0U || BlockIndex < LastIndex)
{
break;
}
}
BlockPtr = (PVOID)RegistryHive->Storage[Stable].BlockList[BlockIndex].BlockAddress;
FileOffset = (BlockIndex + 1) * HV_BLOCK_SIZE;
/* Write hive block */
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_PRIMARY,
&FileOffset, BlockPtr,
HV_BLOCK_SIZE);
if (!Success)
{
return FALSE;
}
BlockIndex++;
}
Success = RegistryHive->FileFlush(RegistryHive, HFILE_TYPE_PRIMARY, NULL, 0);
if (!Success)
{
DPRINT("FileFlush failed\n");
}
/* Update second update counter and CheckSum */
RegistryHive->BaseBlock->Sequence2++;
RegistryHive->BaseBlock->CheckSum =
HvpHiveHeaderChecksum(RegistryHive->BaseBlock);
/* Write hive block */
FileOffset = 0;
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_PRIMARY,
&FileOffset, RegistryHive->BaseBlock,
sizeof(HBASE_BLOCK));
if (!Success)
{
return FALSE;
}
Success = RegistryHive->FileFlush(RegistryHive, HFILE_TYPE_PRIMARY, NULL, 0);
if (!Success)
{
DPRINT("FileFlush failed\n");
}
return TRUE;
}
void
Test_RtlFindSetBits(void)
{
RTL_BITMAP BitMapHeader;
ULONG *Buffer;
Buffer = AllocateGuarded(2 * sizeof(*Buffer));
Buffer[0] = 0xF9F078B2;
Buffer[1] = 0x3F303F30;
RtlInitializeBitMap(&BitMapHeader, Buffer, 0);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 0), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 3), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 0), -1);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 1), -1);
RtlInitializeBitMap(&BitMapHeader, Buffer, 8);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 3), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 0), 1);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 1), 1);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 2), 4);
ok_int(RtlFindSetBits(&BitMapHeader, 2, 0), 4);
ok_int(RtlFindSetBits(&BitMapHeader, 3, 0), -1);
RtlInitializeBitMap(&BitMapHeader, Buffer, 32);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 3), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 21), 16);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 12), 8);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 31), 24);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 32), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 0, 39), 0);
ok_int(RtlFindSetBits(&BitMapHeader, 4, 0), 11);
ok_int(RtlFindSetBits(&BitMapHeader, 5, 0), 20);
ok_int(RtlFindSetBits(&BitMapHeader, 4, 11), 11);
ok_int(RtlFindSetBits(&BitMapHeader, 4, 12), 20);
ok_int(RtlFindSetBits(&BitMapHeader, 2, 11), 11);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 32), 1);
ok_int(RtlFindSetBits(&BitMapHeader, 4, 32), 11);
ok_int(RtlFindSetBits(&BitMapHeader, 5, 32), 20);
RtlInitializeBitMap(&BitMapHeader, Buffer, 64);
ok_int(RtlFindSetBits(&BitMapHeader, 5, 64), 20);
ok_int(RtlFindSetBits(&BitMapHeader, 6, 57), 40);
ok_int(RtlFindSetBits(&BitMapHeader, 7, 0), -1);
ok_int(RtlFindSetBits(&BitMapHeader, 1, 62), 1);
FreeGuarded(Buffer);
}
static BOOLEAN CMAPI
HvpWriteLog(
PHHIVE RegistryHive)
{
ULONG FileOffset;
ULONG BufferSize;
ULONG BitmapSize;
PUCHAR Buffer;
PUCHAR Ptr;
ULONG BlockIndex;
ULONG LastIndex;
PVOID BlockPtr;
BOOLEAN Success;
UNIMPLEMENTED;
return TRUE;
ASSERT(RegistryHive->ReadOnly == FALSE);
ASSERT(RegistryHive->BaseBlock->Length ==
RegistryHive->Storage[Stable].Length * HV_BLOCK_SIZE);
DPRINT("HvpWriteLog called\n");
if (RegistryHive->BaseBlock->Sequence1 !=
RegistryHive->BaseBlock->Sequence2)
{
return FALSE;
}
BitmapSize = RegistryHive->DirtyVector.SizeOfBitMap;
BufferSize = HV_LOG_HEADER_SIZE + sizeof(ULONG) + BitmapSize;
BufferSize = ROUND_UP(BufferSize, HV_BLOCK_SIZE);
DPRINT("Bitmap size %lu buffer size: %lu\n", BitmapSize, BufferSize);
Buffer = RegistryHive->Allocate(BufferSize, TRUE, TAG_CM);
if (Buffer == NULL)
{
return FALSE;
}
/* Update first update counter and CheckSum */
RegistryHive->BaseBlock->Type = HFILE_TYPE_LOG;
RegistryHive->BaseBlock->Sequence1++;
RegistryHive->BaseBlock->CheckSum =
HvpHiveHeaderChecksum(RegistryHive->BaseBlock);
/* Copy hive header */
RtlCopyMemory(Buffer, RegistryHive->BaseBlock, HV_LOG_HEADER_SIZE);
Ptr = Buffer + HV_LOG_HEADER_SIZE;
RtlCopyMemory(Ptr, "DIRT", 4);
Ptr += 4;
RtlCopyMemory(Ptr, RegistryHive->DirtyVector.Buffer, BitmapSize);
/* Write hive block and block bitmap */
FileOffset = 0;
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_LOG,
&FileOffset, Buffer, BufferSize);
RegistryHive->Free(Buffer, 0);
if (!Success)
{
return FALSE;
}
/* Write dirty blocks */
FileOffset = BufferSize;
BlockIndex = 0;
while (BlockIndex < RegistryHive->Storage[Stable].Length)
{
LastIndex = BlockIndex;
BlockIndex = RtlFindSetBits(&RegistryHive->DirtyVector, 1, BlockIndex);
if (BlockIndex == ~0U || BlockIndex < LastIndex)
{
break;
}
BlockPtr = (PVOID)RegistryHive->Storage[Stable].BlockList[BlockIndex].BlockAddress;
/* Write hive block */
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_LOG,
&FileOffset, BlockPtr,
HV_BLOCK_SIZE);
if (!Success)
{
return FALSE;
}
BlockIndex++;
FileOffset += HV_BLOCK_SIZE;
}
Success = RegistryHive->FileSetSize(RegistryHive, HFILE_TYPE_LOG, FileOffset, FileOffset);
if (!Success)
{
DPRINT("FileSetSize failed\n");
return FALSE;
}
/* Flush the log file */
Success = RegistryHive->FileFlush(RegistryHive, HFILE_TYPE_LOG, NULL, 0);
if (!Success)
{
DPRINT("FileFlush failed\n");
}
/* Update second update counter and CheckSum. */
RegistryHive->BaseBlock->Sequence2++;
RegistryHive->BaseBlock->CheckSum =
HvpHiveHeaderChecksum(RegistryHive->BaseBlock);
/* Write hive header again with updated sequence counter. */
FileOffset = 0;
Success = RegistryHive->FileWrite(RegistryHive, HFILE_TYPE_LOG,
&FileOffset, RegistryHive->BaseBlock,
HV_LOG_HEADER_SIZE);
if (!Success)
{
return FALSE;
}
/* Flush the log file */
Success = RegistryHive->FileFlush(RegistryHive, HFILE_TYPE_LOG, NULL, 0);
if (!Success)
{
DPRINT("FileFlush failed\n");
}
return TRUE;
}
ULONG NtdllBitmap::FindSetBits( ULONG number_to_find, ULONG hint_index )
{
assert(RtlFindSetBits != NULL);
return RtlFindSetBits(this, number_to_find, hint_index);
}
