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Removed vfatRequestAndValidateRegion() and vfatReleaseRegion().

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Added some initializations in vfatMakeRootFCB() and vfatMakeFcbFromDirEntry().

svn path=/trunk/; revision=2288
This commit is contained in:
Hartmut Birr 2001-10-10 22:17:42 +00:00
parent 6df323c21b
commit 12f5d25024
1 changed files with 64 additions and 105 deletions
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169
reactos/drivers/fs/vfat/fcb.c
View file

@ -1,4 +1,4 @@
/* $Id: fcb.c,v 1.9 2001/08/14 20:47:30 hbirr Exp $
/* $Id: fcb.c,v 1.10 2001/10/10 22:17:42 hbirr Exp $
*
*
* FILE: fcb.c
@ -25,6 +25,8 @@
#define TAG(A, B, C, D) (ULONG)(((A)<<0) + ((B)<<8) + ((C)<<16) + ((D)<<24))
#define TAG_FCB TAG('V', 'F', 'C', 'B')
#define ROUND_UP(N, S) ((((N) + (S) - 1) / (S)) * (S))
/* -------------------------------------------------------- PUBLICS */
PVFATFCB
@ -73,7 +75,7 @@ vfatGrabFCB(PDEVICE_EXTENSION pVCB, PVFATFCB pFCB)
{
KIRQL oldIrql;
DPRINT ("grabbing FCB at %x: %S, refCount:%d\n",
DPRINT ("grabbing FCB at %x: %S, refCount:%d\n",
pFCB,
pFCB->PathName,
pFCB->RefCount);
@ -88,7 +90,7 @@ vfatReleaseFCB(PDEVICE_EXTENSION pVCB, PVFATFCB pFCB)
{
KIRQL oldIrql;
DPRINT ("releasing FCB at %x: %S, refCount:%d\n",
DPRINT ("releasing FCB at %x: %S, refCount:%d\n",
pFCB,
pFCB->PathName,
pFCB->RefCount);
@ -169,11 +171,14 @@ vfatFCBInitializeCache (PVCB vcb, PVFATFCB fcb)
fileObject->FsContext2 = newCCB;
newCCB->pFcb = fcb;
newCCB->PtrFileObject = fileObject;
fcb->FileObject = fileObject;
fcb->pDevExt = vcb;
bytesPerCluster = vcb->Boot->SectorsPerCluster * BLOCKSIZE;
fileCacheQuantum = (bytesPerCluster >= PAGESIZE) ?
bytesPerCluster : PAGESIZE;
status = CcRosInitializeFileCache (fileObject,
&fcb->RFCB.Bcb,
fileCacheQuantum);
@ -182,123 +187,47 @@ vfatFCBInitializeCache (PVCB vcb, PVFATFCB fcb)
DbgPrint ("CcRosInitializeFileCache failed\n");
KeBugCheck (0);
}
ObDereferenceObject (fileObject);
fcb->Flags |= FCB_CACHE_INITIALIZED;
return status;
}
NTSTATUS
vfatRequestAndValidateRegion(PDEVICE_EXTENSION pDeviceExt,
PVFATFCB pFCB,
ULONG pOffset,
PVOID * pBuffer,
PCACHE_SEGMENT * pCacheSegment,
BOOL pExtend)
{
NTSTATUS status;
BOOLEAN valid;
BOOLEAN isRoot;
ULONG currentCluster;
ULONG i;
status = CcRosRequestCacheSegment(pFCB->RFCB.Bcb,
pOffset,
pBuffer,
&valid,
pCacheSegment);
if (!NT_SUCCESS (status))
{
return status;
}
isRoot = vfatFCBIsRoot (pFCB);
if (!valid)
{
currentCluster = vfatDirEntryGetFirstCluster (pDeviceExt, &pFCB->entry);
status = OffsetToCluster (pDeviceExt,
vfatDirEntryGetFirstCluster (pDeviceExt, &pFCB->entry),
pOffset,
&currentCluster,
pExtend);
if (!NT_SUCCESS (status))
{
return status;
}
if (PAGESIZE > pDeviceExt->BytesPerCluster)
{
for (i = 0; i < (PAGESIZE / pDeviceExt->BytesPerCluster); i++)
{
status = VfatRawReadCluster (pDeviceExt,
vfatDirEntryGetFirstCluster (pDeviceExt, &pFCB->entry),
((PCHAR)*pBuffer) +
(i * pDeviceExt->BytesPerCluster),
currentCluster);
if (!NT_SUCCESS (status))
{
CcRosReleaseCacheSegment(pFCB->RFCB.Bcb, *pCacheSegment, FALSE);
return status;
}
status = NextCluster (pDeviceExt,
vfatDirEntryGetFirstCluster (pDeviceExt, &pFCB->entry),
&currentCluster,
pExtend);
if (!NT_SUCCESS (status))
{
CcRosReleaseCacheSegment(pFCB->RFCB.Bcb, *pCacheSegment, FALSE);
return status;
}
if ((currentCluster) == 0xFFFFFFFF)
{
break;
}
}
}
else
{
status = VfatRawReadCluster (pDeviceExt,
vfatDirEntryGetFirstCluster (pDeviceExt, &pFCB->entry),
*pBuffer,
currentCluster);
if (!NT_SUCCESS (status))
{
CcRosReleaseCacheSegment(pFCB->RFCB.Bcb, *pCacheSegment, FALSE);
return status;
}
}
}
return STATUS_SUCCESS;
}
NTSTATUS
vfatReleaseRegion (PDEVICE_EXTENSION pDeviceExt,
PVFATFCB pFCB,
PCACHE_SEGMENT pCacheSegment)
{
return CcRosReleaseCacheSegment (pFCB->RFCB.Bcb, pCacheSegment, TRUE);
}
PVFATFCB
vfatMakeRootFCB(PDEVICE_EXTENSION pVCB)
{
PVFATFCB FCB;
ULONG FirstCluster, CurrentCluster, Size;
NTSTATUS Status = STATUS_SUCCESS;
FCB = vfatNewFCB(L"\\");
memset(FCB->entry.Filename, ' ', 11);
FCB->entry.FileSize = pVCB->rootDirectorySectors * BLOCKSIZE;
FCB->entry.Attrib = FILE_ATTRIBUTE_DIRECTORY;
if (pVCB->FatType == FAT32)
{
CurrentCluster = FirstCluster = ((struct _BootSector32*)(pVCB->Boot))->RootCluster;
FCB->entry.FirstCluster = FirstCluster & 0xffff;
FCB->entry.FirstClusterHigh = FirstCluster >> 16;
CurrentCluster = FirstCluster;
while (CurrentCluster != 0xffffffff && NT_SUCCESS(Status))
{
FCB->entry.FirstCluster = ((struct _BootSector32*)(pVCB->Boot))->RootCluster & 0xffff;
FCB->entry.FirstClusterHigh = ((struct _BootSector32*)(pVCB->Boot))->RootCluster >> 16;
Size += pVCB->BytesPerCluster;
Status = NextCluster (pVCB, FirstCluster, &CurrentCluster, FALSE);
}
}
else
{
FCB->entry.FirstCluster = 1;
}
{
FCB->entry.FirstCluster = 1;
Size = pVCB->rootDirectorySectors * BLOCKSIZE;
}
FCB->RefCount = 1;
FCB->dirIndex = 0;
FCB->RFCB.FileSize.QuadPart = Size;
FCB->RFCB.ValidDataLength.QuadPart = Size;
FCB->RFCB.AllocationSize.QuadPart = Size;
vfatFCBInitializeCache(pVCB, FCB);
vfatAddFCBToTable(pVCB, FCB);
@ -326,11 +255,12 @@ vfatMakeFCBFromDirEntry(PVCB vcb,
PVFATFCB directoryFCB,
PWSTR longName,
PFAT_DIR_ENTRY dirEntry,
ULONG dirIndex,
PVFATFCB * fileFCB)
{
PVFATFCB rcFCB;
WCHAR pathName [MAX_PATH];
ULONG Size;
if (longName [0] != 0 && wcslen (directoryFCB->PathName) +
sizeof(WCHAR) + wcslen (longName) > MAX_PATH)
{
@ -355,10 +285,38 @@ vfatMakeFCBFromDirEntry(PVCB vcb,
rcFCB = vfatNewFCB (pathName);
memcpy (&rcFCB->entry, dirEntry, sizeof (FAT_DIR_ENTRY));
if (vfatFCBIsDirectory(vcb, rcFCB))
{
ULONG FirstCluster, CurrentCluster;
NTSTATUS Status;
Size = 0;
FirstCluster = vfatDirEntryGetFirstCluster (vcb, &rcFCB->entry);
if (FirstCluster == 1)
{
Size = vcb->rootDirectorySectors * BLOCKSIZE;
}
else
{
CurrentCluster = FirstCluster;
while (CurrentCluster != 0xffffffff)
{
Size += vcb->BytesPerCluster;
Status = NextCluster (vcb, FirstCluster, &CurrentCluster, FALSE);
}
}
}
else
{
Size = rcFCB->entry.FileSize;
}
rcFCB->dirIndex = dirIndex;
rcFCB->RFCB.FileSize.QuadPart = Size;
rcFCB->RFCB.ValidDataLength.QuadPart = Size;
rcFCB->RFCB.AllocationSize.QuadPart = ROUND_UP(Size, vcb->BytesPerCluster);
// DPRINT1("%S %d %d\n", longName, Size, (ULONG)rcFCB->RFCB.AllocationSize.QuadPart);
vfatFCBInitializeCache (vcb, rcFCB);
rcFCB->RefCount++;
vfatAddFCBToTable (vcb, rcFCB);
// vfatGrabFCB (vcb, rcFCB);
*fileFCB = rcFCB;
return STATUS_SUCCESS;
@ -394,8 +352,7 @@ vfatAttachFCBToFileObject (PDEVICE_EXTENSION vcb,
ULONG fileCacheQuantum;
bytesPerCluster = vcb->Boot->SectorsPerCluster * BLOCKSIZE;
fileCacheQuantum = (bytesPerCluster >= PAGESIZE) ? bytesPerCluster :
PAGESIZE;
fileCacheQuantum = (bytesPerCluster >= PAGESIZE) ? bytesPerCluster : PAGESIZE;
status = CcRosInitializeFileCache (fileObject,
&fcb->RFCB.Bcb,
fileCacheQuantum);
@ -477,6 +434,7 @@ vfatDirFindFile (PDEVICE_EXTENSION pDeviceExt,
pDirectoryFCB,
currentLongName,
&currentDirEntry,
directoryIndex - 1,
pFoundFCB);
return status;
}
@ -492,6 +450,7 @@ vfatDirFindFile (PDEVICE_EXTENSION pDeviceExt,
pDirectoryFCB,
currentLongName,
&currentDirEntry,
directoryIndex - 1,
pFoundFCB);
return status;
}
@ -505,7 +464,7 @@ vfatDirFindFile (PDEVICE_EXTENSION pDeviceExt,
NTSTATUS
vfatGetFCBForFile (PDEVICE_EXTENSION pVCB,
PVFATFCB *pParentFCB,
PVFATFCB *pFCB,
PVFATFCB *pFCB,
const PWSTR pFileName)
{
NTSTATUS status;