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sys: FspPropagateTopFlags

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This commit is contained in:
Bill Zissimopoulos
2016-03-03 10:46:49 -08:00
parent bb897872a1
commit 6f3f57366a
2 changed files with 28 additions and 13 deletions
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26
src/sys/callbacks.c
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@ -24,6 +24,7 @@ BOOLEAN FspAcquireForReadAhead(
BOOLEAN Wait);
VOID FspReleaseFromReadAhead(
PVOID Context);
VOID FspPropagateTopFlags(PIRP Irp, PIRP TopLevelFlags);
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, FspFastIoCheckIfPossible)
@ -37,6 +38,7 @@ VOID FspReleaseFromReadAhead(
#pragma alloc_text(PAGE, FspReleaseFromLazyWrite)
#pragma alloc_text(PAGE, FspAcquireForReadAhead)
#pragma alloc_text(PAGE, FspReleaseFromReadAhead)
#pragma alloc_text(PAGE, FspPropagateTopFlags)
#endif
BOOLEAN FspFastIoCheckIfPossible(
@ -185,3 +187,27 @@ VOID FspReleaseFromReadAhead(
FSP_LEAVE_VOID("Context=%p", Context);
}
VOID FspPropagateTopFlags(PIRP Irp, PIRP TopLevelIrp)
{
/*
* We place FspPropagateTopFlags in this file, because the top flags
* are related to the resources acquired in FspAcquire*.
*/
PAGED_CODE();
if (FSRTL_MAX_TOP_LEVEL_IRP_FLAG >= (UINT_PTR)TopLevelIrp)
FspIrpSetTopFlags(Irp, FspFileNodeAcquireFull);
else if (IO_TYPE_IRP == TopLevelIrp->Type)
{
PFILE_OBJECT FileObject = IoGetCurrentIrpStackLocation(Irp)->FileObject;
PFILE_OBJECT TopLevelFileObject = IoGetCurrentIrpStackLocation(TopLevelIrp)->FileObject;
if (0 != FileObject && 0 != TopLevelFileObject &&
FileObject->FsContext == TopLevelFileObject->FsContext &&
FspFileNodeIsValid(FileObject->FsContext))
{
FspIrpSetTopFlags(Irp, FspIrpFlags(TopLevelIrp));
}
}
}