mirror of
https://github.com/reactos/reactos.git
synced 2024-11-09 08:08:38 +00:00
104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/*
|
|
* PROJECT: registry manipulation library
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* COPYRIGHT: Copyright 2005 Filip Navara <navaraf@reactos.org>
|
|
* Copyright 2005 Hartmut Birr
|
|
* Copyright 2001 - 2005 Eric Kohl
|
|
*/
|
|
|
|
#include "cmlib.h"
|
|
|
|
PHBIN CMAPI
|
|
HvpAddBin(
|
|
PHHIVE RegistryHive,
|
|
ULONG Size,
|
|
HSTORAGE_TYPE Storage)
|
|
{
|
|
PHMAP_ENTRY BlockList;
|
|
PHBIN Bin;
|
|
SIZE_T BinSize;
|
|
ULONG i;
|
|
ULONG BitmapSize;
|
|
ULONG BlockCount;
|
|
ULONG OldBlockListSize;
|
|
PHCELL Block;
|
|
|
|
BinSize = ROUND_UP(Size + sizeof(HBIN), HV_BLOCK_SIZE);
|
|
BlockCount = (ULONG)(BinSize / HV_BLOCK_SIZE);
|
|
|
|
Bin = RegistryHive->Allocate(BinSize, TRUE, TAG_CM);
|
|
if (Bin == NULL)
|
|
return NULL;
|
|
RtlZeroMemory(Bin, BinSize);
|
|
|
|
Bin->Signature = HV_BIN_SIGNATURE;
|
|
Bin->FileOffset = RegistryHive->Storage[Storage].Length *
|
|
HV_BLOCK_SIZE;
|
|
Bin->Size = (ULONG)BinSize;
|
|
|
|
/* Allocate new block list */
|
|
OldBlockListSize = RegistryHive->Storage[Storage].Length;
|
|
BlockList = RegistryHive->Allocate(sizeof(HMAP_ENTRY) *
|
|
(OldBlockListSize + BlockCount),
|
|
TRUE,
|
|
TAG_CM);
|
|
if (BlockList == NULL)
|
|
{
|
|
RegistryHive->Free(Bin, 0);
|
|
return NULL;
|
|
}
|
|
|
|
if (OldBlockListSize > 0)
|
|
{
|
|
RtlCopyMemory(BlockList, RegistryHive->Storage[Storage].BlockList,
|
|
OldBlockListSize * sizeof(HMAP_ENTRY));
|
|
RegistryHive->Free(RegistryHive->Storage[Storage].BlockList, 0);
|
|
}
|
|
|
|
RegistryHive->Storage[Storage].BlockList = BlockList;
|
|
RegistryHive->Storage[Storage].Length += BlockCount;
|
|
|
|
for (i = 0; i < BlockCount; i++)
|
|
{
|
|
RegistryHive->Storage[Storage].BlockList[OldBlockListSize + i].BlockAddress =
|
|
((ULONG_PTR)Bin + (i * HV_BLOCK_SIZE));
|
|
RegistryHive->Storage[Storage].BlockList[OldBlockListSize + i].BinAddress = (ULONG_PTR)Bin;
|
|
}
|
|
|
|
/* Initialize a free block in this heap. */
|
|
Block = (PHCELL)(Bin + 1);
|
|
Block->Size = (LONG)(BinSize - sizeof(HBIN));
|
|
|
|
if (Storage == Stable)
|
|
{
|
|
/* Calculate bitmap size in bytes (always a multiple of 32 bits). */
|
|
BitmapSize = ROUND_UP(RegistryHive->Storage[Stable].Length,
|
|
sizeof(ULONG) * 8) / 8;
|
|
|
|
/* Grow bitmap if necessary. */
|
|
if (BitmapSize > RegistryHive->DirtyVector.SizeOfBitMap / 8)
|
|
{
|
|
PULONG BitmapBuffer;
|
|
|
|
BitmapBuffer = RegistryHive->Allocate(BitmapSize, TRUE, TAG_CM);
|
|
RtlZeroMemory(BitmapBuffer, BitmapSize);
|
|
if (RegistryHive->DirtyVector.SizeOfBitMap > 0)
|
|
{
|
|
ASSERT(RegistryHive->DirtyVector.Buffer);
|
|
RtlCopyMemory(BitmapBuffer,
|
|
RegistryHive->DirtyVector.Buffer,
|
|
RegistryHive->DirtyVector.SizeOfBitMap / 8);
|
|
RegistryHive->Free(RegistryHive->DirtyVector.Buffer, 0);
|
|
}
|
|
RtlInitializeBitMap(&RegistryHive->DirtyVector, BitmapBuffer,
|
|
BitmapSize * 8);
|
|
}
|
|
|
|
/* Mark new bin dirty. */
|
|
RtlSetBits(&RegistryHive->DirtyVector,
|
|
Bin->FileOffset / HV_BLOCK_SIZE,
|
|
BlockCount);
|
|
}
|
|
|
|
return Bin;
|
|
}
|