mirror of
https://github.com/reactos/reactos.git
synced 2024-09-29 14:09:10 +00:00
- Implement CcRepinBcb and CcGetFileObjectFromBcb.
- Partially implement CcUnpinRepinnedBcb, CcPinMappedData, CcPinRead, CcPreparePinWrite, CcInitializeCacheMap (Art Yerkes) and CcUninitializeCacheMap. - Fix ReadCacheSegmentChain to handle correctly big request and check for MDL request memory overflow. - Allow passing NULL BCB to CcSetFileSizes. - Ensure that registry files are opened using lowercase file names. svn path=/trunk/; revision=10678
This commit is contained in:
Filip Navara
parent
b8648c7bf4
commit
1e7841a2e8
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@ -57,18 +57,6 @@ CcGetFlushedValidData (
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return i;
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}
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/*
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* @unimplemented
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*/
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VOID
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STDCALL
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CcRepinBcb (
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IN PVOID Bcb
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)
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{
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UNIMPLEMENTED;
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}
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/*
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* @unimplemented
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*/
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@ -147,17 +135,3 @@ CcSetReadAheadGranularity (
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{
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UNIMPLEMENTED;
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}
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/*
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* @unimplemented
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*/
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VOID
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STDCALL
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CcUnpinRepinnedBcb (
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IN PVOID Bcb,
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IN BOOLEAN WriteThrough,
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IN PIO_STATUS_BLOCK IoStatus
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)
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{
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UNIMPLEMENTED;
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}
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@ -1,4 +1,4 @@
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/* $Id: copy.c,v 1.30 2004/08/15 16:38:59 chorns Exp $
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/* $Id: copy.c,v 1.31 2004/08/25 15:08:28 navaraf Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -22,7 +22,7 @@
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static PFN_TYPE CcZeroPage = 0;
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#define MAX_ZERO_LENGTH (256 * 1024)
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#define MAX_RW_LENGTH (64 * 1024)
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#define MAX_RW_LENGTH (256 * 1024)
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#if defined(__GNUC__)
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void * alloca(size_t size);
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@ -119,7 +119,7 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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*/
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current2 = current;
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current_size = 0;
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while (current2 != NULL && !current2->Valid)
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while (current2 != NULL && !current2->Valid && current_size < MAX_RW_LENGTH)
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{
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current2 = current2->NextInChain;
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current_size += Bcb->CacheSegmentSize;
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@ -131,8 +131,9 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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MmInitializeMdl(Mdl, NULL, current_size);
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Mdl->MdlFlags |= (MDL_PAGES_LOCKED | MDL_IO_PAGE_READ);
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current2 = current;
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current_size = 0;
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MdlPages = (PPFN_TYPE)(Mdl + 1);
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while (current2 != NULL && !current2->Valid)
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while (current2 != NULL && !current2->Valid && current_size < MAX_RW_LENGTH)
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{
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PVOID address = current2->BaseAddress;
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for (i = 0; i < (Bcb->CacheSegmentSize / PAGE_SIZE); i++, address += PAGE_SIZE)
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@ -140,6 +141,7 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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*MdlPages++ = MmGetPfnForProcess(NULL, address);
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}
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current2 = current2->NextInChain;
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current_size += Bcb->CacheSegmentSize;
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}
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/*
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@ -157,7 +159,10 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
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Status = Iosb.Status;
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}
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MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
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if (Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA)
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{
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MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
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}
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if (!NT_SUCCESS(Status) && Status != STATUS_END_OF_FILE)
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{
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while (current != NULL)
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@ -168,7 +173,8 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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}
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return(Status);
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}
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while (current != NULL && !current->Valid)
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current_size = 0;
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while (current != NULL && !current->Valid && current_size < MAX_RW_LENGTH)
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{
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previous = current;
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current = current->NextInChain;
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@ -185,6 +191,7 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
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#endif
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Length = Length - TempLength;
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CcRosReleaseCacheSegment(Bcb, previous, TRUE, FALSE, FALSE);
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current_size += Bcb->CacheSegmentSize;
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}
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}
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}
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@ -13,6 +13,10 @@
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#define NDEBUG
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#include <internal/debug.h>
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#ifndef VACB_MAPPING_GRANULARITY
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#define VACB_MAPPING_GRANULARITY (256 * 1024)
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#endif
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/* GLOBALS *****************************************************************/
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extern FAST_MUTEX ViewLock;
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@ -42,7 +46,7 @@ CcGetDirtyPages (
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}
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/*
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* @unimplemented
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* @implemented
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*/
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PFILE_OBJECT
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STDCALL
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@ -50,8 +54,8 @@ CcGetFileObjectFromBcb (
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IN PVOID Bcb
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)
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{
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UNIMPLEMENTED;
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return 0;
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PINTERNAL_BCB iBcb = (PINTERNAL_BCB)Bcb;
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return iBcb->CacheSegment->Bcb->FileObject;
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}
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/*
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@ -84,7 +88,7 @@ CcInitializeCacheMap (
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IN PVOID LazyWriterContext
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)
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{
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UNIMPLEMENTED;
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CcRosInitializeFileCache(FileObject, VACB_MAPPING_GRANULARITY);
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}
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/*
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@ -139,7 +143,13 @@ CcSetFileSizes (IN PFILE_OBJECT FileObject,
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(ULONG)FileSizes->ValidDataLength.QuadPart);
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Bcb = FileObject->SectionObjectPointer->SharedCacheMap;
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assert(Bcb);
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/*
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* It is valid to call this function on file objects that weren't
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* initialized for caching. In this case it's simple no-op.
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*/
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if (Bcb == NULL)
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return;
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if (FileSizes->AllocationSize.QuadPart < Bcb->AllocationSize.QuadPart)
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{
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@ -226,6 +236,10 @@ CcUninitializeCacheMap (
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IN PCACHE_UNINITIALIZE_EVENT UninitializeCompleteEvent OPTIONAL
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)
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{
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#if 0
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UNIMPLEMENTED;
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return FALSE;
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#else
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return CcRosReleaseFileCache(FileObject);
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#endif
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}
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@ -1,4 +1,4 @@
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/* $Id: pin.c,v 1.16 2004/08/15 16:39:00 chorns Exp $
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/* $Id: pin.c,v 1.17 2004/08/25 15:08:29 navaraf Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -97,10 +97,13 @@ CcMapData (IN PFILE_OBJECT FileObject,
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return FALSE;
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}
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memset(iBcb, 0, sizeof(INTERNAL_BCB));
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iBcb->PFCB.NodeTypeCode = 0xDE45; /* Undocumented (CAPTIVE_PUBLIC_BCB_NODETYPECODE) */
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iBcb->PFCB.NodeByteSize = sizeof(PUBLIC_BCB);
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iBcb->PFCB.MappedLength = Length;
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iBcb->PFCB.MappedFileOffset = *FileOffset;
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iBcb->CacheSegment = CacheSeg;
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iBcb->Dirty = FALSE;
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iBcb->PFCB.MappedLength = Length;
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iBcb->PFCB.MappedFileOffset.QuadPart = FileOffset->QuadPart;
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iBcb->RefCount = 1;
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*pBcb = (PVOID)iBcb;
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return(TRUE);
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}
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@ -118,8 +121,8 @@ CcPinMappedData (
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OUT PVOID * Bcb
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)
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{
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UNIMPLEMENTED;
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return FALSE;
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/* no-op for current implementation. */
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return TRUE;
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}
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/*
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@ -136,8 +139,14 @@ CcPinRead (
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OUT PVOID * Buffer
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)
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{
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UNIMPLEMENTED;
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return FALSE;
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if (CcMapData(FileObject, FileOffset, Length, Wait, Bcb, Buffer))
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{
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if (CcPinMappedData(FileObject, FileOffset, Length, Wait, Bcb))
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return TRUE;
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else
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CcUnpinData(Bcb);
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}
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return FALSE;
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}
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/*
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@ -155,8 +164,15 @@ CcPreparePinWrite (
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OUT PVOID * Buffer
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)
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{
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UNIMPLEMENTED;
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return FALSE;
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/*
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* FIXME: This is function is similar to CcPinRead, but doesn't
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* read the data if they're not present. Instead it should just
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* prepare the cache segments and zero them out if Zero == TRUE.
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*
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* For now calling CcPinRead is better than returning error or
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* just having UNIMPLEMENTED here.
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*/
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return CcPinRead(FileObject, FileOffset, Length, Wait, Bcb, Buffer);
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}
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/*
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@ -179,8 +195,11 @@ CcUnpinData (IN PVOID Bcb)
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{
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PINTERNAL_BCB iBcb = Bcb;
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CcRosReleaseCacheSegment(iBcb->CacheSegment->Bcb, iBcb->CacheSegment, TRUE,
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iBcb->Dirty, FALSE);
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ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
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iBcb->Dirty, FALSE);
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if (--iBcb->RefCount == 0)
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{
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ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
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}
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}
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/*
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@ -195,3 +214,54 @@ CcUnpinDataForThread (
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{
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UNIMPLEMENTED;
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}
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/*
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* @implemented
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*/
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VOID
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STDCALL
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CcRepinBcb (
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IN PVOID Bcb
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)
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{
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PINTERNAL_BCB iBcb = Bcb;
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iBcb->RefCount++;
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}
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/*
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* @unimplemented
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*/
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VOID
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STDCALL
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CcUnpinRepinnedBcb (
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IN PVOID Bcb,
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IN BOOLEAN WriteThrough,
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IN PIO_STATUS_BLOCK IoStatus
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)
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{
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PINTERNAL_BCB iBcb = Bcb;
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if (--iBcb->RefCount == 0)
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{
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IoStatus->Information = 0;
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if (WriteThrough)
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{
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ExAcquireFastMutex(&iBcb->CacheSegment->Lock);
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if (iBcb->CacheSegment->Dirty)
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{
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IoStatus->Status = CcRosFlushCacheSegment(iBcb->CacheSegment);
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}
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else
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{
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IoStatus->Status = STATUS_SUCCESS;
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}
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ExReleaseFastMutex(&iBcb->CacheSegment->Lock);
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}
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else
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{
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IoStatus->Status = STATUS_SUCCESS;
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}
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ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
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}
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}
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: view.c,v 1.76 2004/08/15 16:39:00 chorns Exp $
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/* $Id: view.c,v 1.77 2004/08/25 15:08:29 navaraf Exp $
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*
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/cc/view.c
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@ -113,7 +113,7 @@ CcRosInternalFreeCacheSegment(PCACHE_SEGMENT CacheSeg);
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/* FUNCTIONS *****************************************************************/
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NTSTATUS STATIC
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NTSTATUS
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CcRosFlushCacheSegment(PCACHE_SEGMENT CacheSegment)
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{
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NTSTATUS Status;
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@ -29,11 +29,11 @@
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#define SAM_REG_FILE L"\\SystemRoot\\System32\\Config\\SAM"
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#define SEC_REG_FILE L"\\SystemRoot\\System32\\Config\\SECURITY"
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#define REG_SYSTEM_FILE_NAME L"\\SYSTEM"
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#define REG_SOFTWARE_FILE_NAME L"\\SOFTWARE"
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#define REG_DEFAULT_USER_FILE_NAME L"\\DEFAULT"
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#define REG_SAM_FILE_NAME L"\\SAM"
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#define REG_SEC_FILE_NAME L"\\SECURITY"
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#define REG_SYSTEM_FILE_NAME L"\\system"
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#define REG_SOFTWARE_FILE_NAME L"\\software"
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#define REG_DEFAULT_USER_FILE_NAME L"\\default"
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#define REG_SAM_FILE_NAME L"\\sam"
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#define REG_SEC_FILE_NAME L"\\security"
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#define REG_BLOCK_SIZE 4096
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#define REG_HBIN_DATA_OFFSET 32
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@ -1,7 +1,7 @@
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#ifndef __INCLUDE_INTERNAL_CC_H
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#define __INCLUDE_INTERNAL_CC_H
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/* $Id: cc.h,v 1.20 2004/08/01 21:57:34 navaraf Exp $ */
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/* $Id: cc.h,v 1.21 2004/08/25 15:08:29 navaraf Exp $ */
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#include <ddk/ntifs.h>
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#include <reactos/bugcodes.h>
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@ -59,12 +59,16 @@ typedef struct _INTERNAL_BCB
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PUBLIC_BCB PFCB;
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PCACHE_SEGMENT CacheSegment;
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BOOLEAN Dirty;
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CSHORT RefCount; /* (At offset 0x34 on WinNT4) */
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} INTERNAL_BCB, *PINTERNAL_BCB;
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VOID STDCALL
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CcMdlReadCompleteDev (IN PMDL MdlChain,
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IN PDEVICE_OBJECT DeviceObject);
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NTSTATUS
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CcRosFlushCacheSegment(PCACHE_SEGMENT CacheSegment);
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NTSTATUS
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CcRosGetCacheSegment(PBCB Bcb,
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ULONG FileOffset,
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