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Reactos
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374/* * PROJECT: ReactOS i8042 (ps/2 keyboard-mouse controller) driver * LICENSE: GPL - See COPYING in the top level directory * FILE: drivers/input/i8042prt/misc.c * PURPOSE: Miscellaneous operations * PROGRAMMERS: Copyright 2006-2007 Herv� Poussineau (hpoussin@reactos.org) */
/* INCLUDES ******************************************************************/
#include "i8042prt.h"
#include <debug.h>
/* FUNCTIONS *****************************************************************/
NTSTATUS NTAPIForwardIrpAndForget( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp){ PDEVICE_OBJECT LowerDevice = ((PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
ASSERT(LowerDevice);
IoSkipCurrentIrpStackLocation(Irp); return IoCallDriver(LowerDevice, Irp);}
NTSTATUSDuplicateUnicodeString( IN ULONG Flags, IN PCUNICODE_STRING SourceString, OUT PUNICODE_STRING DestinationString){ if (SourceString == NULL || DestinationString == NULL || SourceString->Length > SourceString->MaximumLength || (SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL) || Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING || Flags >= 4) { return STATUS_INVALID_PARAMETER; }
if ((SourceString->Length == 0) && (Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE | RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING))) { DestinationString->Length = 0; DestinationString->MaximumLength = 0; DestinationString->Buffer = NULL; } else { USHORT DestMaxLength = SourceString->Length;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE) DestMaxLength += sizeof(UNICODE_NULL);
DestinationString->Buffer = ExAllocatePoolWithTag(PagedPool, DestMaxLength, I8042PRT_TAG); if (DestinationString->Buffer == NULL) return STATUS_NO_MEMORY;
RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length); DestinationString->Length = SourceString->Length; DestinationString->MaximumLength = DestMaxLength;
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE) DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0; }
return STATUS_SUCCESS;}