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I/O Manager fixes. Patch by Filip Navara.

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svn path=/trunk/; revision=10506
This commit is contained in:
Alex Ionescu 2004-08-12 16:43:12 +00:00
parent 78f66ec97c
commit 28ad49e6f7
3 changed files with 52 additions and 29 deletions
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4
reactos/ntoskrnl/io/buildirp.c
View file

@ -1,4 +1,4 @@
/* $Id: buildirp.c,v 1.42 2004/08/10 06:26:42 ion Exp $
/* $Id: buildirp.c,v 1.43 2004/08/12 16:43:11 ion Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -160,8 +160,6 @@ IoBuildAsynchronousFsdRequest(ULONG MajorFunction,
}
}
Irp->UserIosb = IoStatusBlock;
return(Irp);
}

5
reactos/ntoskrnl/io/device.c
View file

@ -1,4 +1,4 @@
/* $Id: device.c,v 1.71 2004/06/23 21:42:49 ion Exp $
/* $Id: device.c,v 1.72 2004/08/12 16:43:12 ion Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -647,7 +647,8 @@ IoCreateDevice(
CreatedDeviceObject->DeviceType == FILE_DEVICE_CD_ROM ||
CreatedDeviceObject->DeviceType == FILE_DEVICE_TAPE)
{
IoAttachVpb(CreatedDeviceObject);
IoAttachVpb(CreatedDeviceObject);
CreatedDeviceObject->SectorSize = 512; /* FIXME */
}
DeviceObjectExtension =

72
reactos/ntoskrnl/io/irp.c
View file

@ -1,4 +1,4 @@
/* $Id: irp.c,v 1.63 2004/08/10 06:26:42 ion Exp $
/* $Id: irp.c,v 1.64 2004/08/12 16:43:12 ion Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -129,20 +129,24 @@ IoMakeAssociatedIrp(PIRP Irp,
* RETURNS: The irp allocated
*/
{
PIRP AssocIrp;
PIRP AssocIrp;
/* Allocate the IRP */
AssocIrp = IoAllocateIrp(StackSize,FALSE);
/* Allocate the IRP */
AssocIrp = IoAllocateIrp(StackSize,FALSE);
if (AssocIrp == NULL)
return NULL;
/* Set the Flags */
AssocIrp->Flags |= IRP_ASSOCIATED_IRP;
/* Set the Flags */
AssocIrp->Flags |= IRP_ASSOCIATED_IRP;
/* Set the Thread */
AssocIrp->Tail.Overlay.Thread = Irp->Tail.Overlay.Thread;
/* Set the Thread */
AssocIrp->Tail.Overlay.Thread = Irp->Tail.Overlay.Thread;
/* Associate them */
AssocIrp->AssociatedIrp.MasterIrp = Irp;
return AssocIrp;
/* Associate them */
AssocIrp->AssociatedIrp.MasterIrp = Irp;
InterlockedIncrement(&Irp->AssociatedIrp.IrpCount);
return AssocIrp;
}
@ -292,8 +296,8 @@ IofCompleteRequest(PIRP Irp,
{
ULONG i;
NTSTATUS Status;
PDEVICE_OBJECT DeviceObject;
PFILE_OBJECT OriginalFileObject;
PDEVICE_OBJECT DeviceObject;
KIRQL oldIrql;
PMDL Mdl;
@ -309,6 +313,10 @@ IofCompleteRequest(PIRP Irp,
Irp->PendingReturned = TRUE;
}
/*
* Run the completion routines.
*/
for (i=Irp->CurrentLocation;i<(ULONG)Irp->StackCount;i++)
{
/*
@ -350,6 +358,27 @@ IofCompleteRequest(PIRP Irp,
}
}
/* Windows NT File System Internals, page 165 */
if (Irp->Flags & IRP_ASSOCIATED_IRP)
{
ULONG MasterIrpCount;
PIRP MasterIrp = Irp->AssociatedIrp.MasterIrp;
MasterIrpCount = InterlockedDecrement(&MasterIrp->AssociatedIrp.IrpCount);
while ((Mdl = Irp->MdlAddress))
{
Irp->MdlAddress = Mdl->Next;
MmUnlockPages(Mdl);
IoFreeMdl(Mdl);
}
IoFreeIrp(Irp);
if (MasterIrpCount == 0)
{
IofCompleteRequest(MasterIrp, IO_NO_INCREMENT);
}
return;
}
/*
* Were done calling completion routines. Now do any cleanup that can be
* done in an arbitrarily context.
@ -409,17 +438,14 @@ IofCompleteRequest(PIRP Irp,
*/
//Windows NT File System Internals, page 166/167
if (!(Irp->Flags & IRP_ASSOCIATED_IRP))
for (Mdl = Irp->MdlAddress; Mdl; Mdl = Mdl->Next)
{
for (Mdl = Irp->MdlAddress; Mdl; Mdl = Mdl->Next)
{
/*
* Undo the MmProbeAndLockPages. If MmGetSystemAddressForMdl was called
* on this mdl, this mapping (if any) is also undone by MmUnlockPages.
*/
MmUnlockPages(Irp->MdlAddress);
}
/*
* Undo the MmProbeAndLockPages. If MmGetSystemAddressForMdl was called
* on this mdl, this mapping (if any) is also undone by MmUnlockPages.
*/
MmUnlockPages(Mdl);
}
//Windows NT File System Internals, page 154
@ -459,8 +485,6 @@ IofCompleteRequest(PIRP Irp,
KeLowerIrql(oldIrql);
DPRINT("Finished completition routine\n");
}
}