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[FASTFAT]

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- Assert that we never reference or dereference an FCB with RefCount 0
CORE-8733

svn path=/trunk/; revision=65270
This commit is contained in:
Thomas Faber 2014-11-05 19:06:19 +00:00
parent b708ab01e9
commit a66700e316
1 changed files with 4 additions and 3 deletions
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7
reactos/drivers/filesystems/fastfat/fcb.c
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@ -295,6 +295,7 @@ vfatGrabFCB(
ASSERT(ExIsResourceAcquiredExclusive(&pVCB->DirResource));
ASSERT(pFCB != pVCB->VolumeFcb);
ASSERT(pFCB->RefCount > 0);
++pFCB->RefCount;
}
@ -313,6 +314,7 @@ vfatReleaseFCB(
while (pFCB)
{
ASSERT(pFCB != pVCB->VolumeFcb);
ASSERT(pFCB->RefCount > 0);
pFCB->RefCount--;
if (pFCB->RefCount == 0)
{
@ -497,7 +499,6 @@ vfatFCBInitializeCacheFromVolume(
fileObject->FsContext = fcb;
fileObject->FsContext2 = newCCB;
fcb->FileObject = fileObject;
vfatGrabFCB(vcb, fcb);
_SEH2_TRY
{
@ -510,7 +511,6 @@ vfatFCBInitializeCacheFromVolume(
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
status = _SEH2_GetExceptionCode();
fcb->RefCount--;
fcb->FileObject = NULL;
ExFreeToNPagedLookasideList(&VfatGlobalData->CcbLookasideList, newCCB);
ObDereferenceObject(fileObject);
@ -518,6 +518,7 @@ vfatFCBInitializeCacheFromVolume(
}
_SEH2_END;
vfatGrabFCB(vcb, fcb);
fcb->Flags |= FCB_CACHE_INITIALIZED;
return STATUS_SUCCESS;
}
@ -663,7 +664,7 @@ vfatMakeFCBFromDirEntry(
rcFCB->RFCB.FileSize.QuadPart = Size;
rcFCB->RFCB.ValidDataLength.QuadPart = Size;
rcFCB->RFCB.AllocationSize.QuadPart = ROUND_UP(Size, vcb->FatInfo.BytesPerCluster);
vfatGrabFCB(vcb, rcFCB);
rcFCB->RefCount = 1;
if (vfatFCBIsDirectory(rcFCB))
{
vfatFCBInitializeCacheFromVolume(vcb, rcFCB);