/*************************************************************************
*
* Function: Ext2Close()
*
* Description:
* The I/O Manager will invoke this routine to handle a close
* request
*
* Expected Interrupt Level (for execution) :
*
* IRQL_PASSIVE_LEVEL (invocation at higher IRQL will cause execution
* to be deferred to a worker thread context)
*
* Return Value: Does not matter!
*
*************************************************************************/
NTSTATUS NTAPI Ext2Close(
PDEVICE_OBJECT DeviceObject, // the logical volume device object
PIRP Irp) // I/O Request Packet
{
NTSTATUS RC = STATUS_SUCCESS;
PtrExt2IrpContext PtrIrpContext = NULL;
BOOLEAN AreWeTopLevel = FALSE;
DebugTrace(DEBUG_TRACE_IRP_ENTRY, "Close IRP Received...", 0);
FsRtlEnterFileSystem();
ASSERT(DeviceObject);
ASSERT(Irp);
// set the top level context
AreWeTopLevel = Ext2IsIrpTopLevel(Irp);
try
{
// get an IRP context structure and issue the request
PtrIrpContext = Ext2AllocateIrpContext(Irp, DeviceObject);
ASSERT(PtrIrpContext);
RC = Ext2CommonClose(PtrIrpContext, Irp, TRUE);
}
except (Ext2ExceptionFilter(PtrIrpContext, GetExceptionInformation()))
{
RC = Ext2ExceptionHandler(PtrIrpContext, Irp);
Ext2LogEvent(EXT2_ERROR_INTERNAL_ERROR, RC);
}
if (AreWeTopLevel)
{
IoSetTopLevelIrp(NULL);
}
FsRtlExitFileSystem();
return(RC);
}
NTSTATUS
Ext2BuildRequest (PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
BOOLEAN AtIrqlPassiveLevel = FALSE;
BOOLEAN IsTopLevelIrp = FALSE;
PEXT2_IRP_CONTEXT IrpContext = NULL;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
__try {
__try {
#if EXT2_DEBUG
Ext2DbgPrintCall(DeviceObject, Irp);
#endif
AtIrqlPassiveLevel = (KeGetCurrentIrql() == PASSIVE_LEVEL);
if (AtIrqlPassiveLevel) {
FsRtlEnterFileSystem();
}
if (!IoGetTopLevelIrp()) {
IsTopLevelIrp = TRUE;
IoSetTopLevelIrp(Irp);
}
IrpContext = Ext2AllocateIrpContext(DeviceObject, Irp);
if (!IrpContext) {
Status = STATUS_INSUFFICIENT_RESOURCES;
Irp->IoStatus.Status = Status;
Ext2CompleteRequest(Irp, TRUE, IO_NO_INCREMENT);
} else {
if ((IrpContext->MajorFunction == IRP_MJ_CREATE) &&
!AtIrqlPassiveLevel) {
DbgBreak();
}
Status = Ext2DispatchRequest(IrpContext);
}
} __except (Ext2ExceptionFilter(IrpContext, GetExceptionInformation())) {
Status = Ext2ExceptionHandler(IrpContext);
}
} __finally {
if (IsTopLevelIrp) {
IoSetTopLevelIrp(NULL);
}
if (AtIrqlPassiveLevel) {
FsRtlExitFileSystem();
}
}
return Status;
}
