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Addendum to r69475

svn path=/trunk/; revision=69476
This commit is contained in:
Pierre Schweitzer 2015-10-10 08:31:25 +00:00
parent ead10526aa
commit a5031d7982
1 changed files with 130 additions and 0 deletions
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130
reactos/drivers/filesystems/msfs/msfssup.c Normal file
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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: drivers/filesystems/msfs/msfssup.c
* PURPOSE: Mailslot filesystem
* PROGRAMMER: Nikita Pechenkin (n.pechenkin@mail.ru)
*/
/* INCLUDES ******************************************************************/
#include "msfs.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS *****************************************************************/
VOID NTAPI
MsfsInsertIrp(PIO_CSQ Csq, PIRP Irp)
{
PMSFS_FCB Fcb;
Fcb = CONTAINING_RECORD(Csq, MSFS_FCB, CancelSafeQueue);
InsertTailList(&Fcb->PendingIrpQueue, &Irp->Tail.Overlay.ListEntry);
}
VOID NTAPI
MsfsRemoveIrp(PIO_CSQ Csq, PIRP Irp)
{
UNREFERENCED_PARAMETER(Csq);
RemoveEntryList(&Irp->Tail.Overlay.ListEntry);
}
PIRP NTAPI
MsfsPeekNextIrp(PIO_CSQ Csq, PIRP Irp, PVOID PeekContext)
{
PMSFS_FCB Fcb;
PIRP NextIrp = NULL;
PLIST_ENTRY NextEntry, ListHead;
PIO_STACK_LOCATION Stack;
Fcb = CONTAINING_RECORD(Csq, MSFS_FCB, CancelSafeQueue);
ListHead = &Fcb->PendingIrpQueue;
if (Irp == NULL)
{
NextEntry = ListHead->Flink;
}
else
{
NextEntry = Irp->Tail.Overlay.ListEntry.Flink;
}
for (; NextEntry != ListHead; NextEntry = NextEntry->Flink)
{
NextIrp = CONTAINING_RECORD(NextEntry, IRP, Tail.Overlay.ListEntry);
Stack = IoGetCurrentIrpStackLocation(NextIrp);
if (PeekContext)
{
if (Stack->FileObject == (PFILE_OBJECT)PeekContext)
{
break;
}
}
else
{
break;
}
NextIrp = NULL;
}
return NextIrp;
}
VOID NTAPI
MsfsAcquireLock(PIO_CSQ Csq, PKIRQL Irql)
{
PMSFS_FCB Fcb;
Fcb = CONTAINING_RECORD(Csq, MSFS_FCB, CancelSafeQueue);
KeAcquireSpinLock(&Fcb->QueueLock, Irql);
}
VOID NTAPI
MsfsReleaseLock(PIO_CSQ Csq, KIRQL Irql)
{
PMSFS_FCB Fcb;
Fcb = CONTAINING_RECORD(Csq, MSFS_FCB, CancelSafeQueue);
KeReleaseSpinLock(&Fcb->QueueLock, Irql);
}
VOID NTAPI
MsfsCompleteCanceledIrp(PIO_CSQ Csq, PIRP Irp)
{
UNREFERENCED_PARAMETER(Csq);
Irp->IoStatus.Status = STATUS_CANCELLED;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
VOID NTAPI
MsfsTimeout(PKDPC Dpc,
PVOID DeferredContext,
PVOID SystemArgument1,
PVOID SystemArgument2)
{
PMSFS_DPC_CTX Context;
PIRP Irp;
Context = (PMSFS_DPC_CTX)DeferredContext;
Irp = IoCsqRemoveIrp(Context->Csq, &Context->CsqContext);
if (Irp != NULL)
{
Irp->IoStatus.Status = STATUS_IO_TIMEOUT;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
ExFreePool(Context);
}
/* EOF */