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Reactos
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273/* * COPYRIGHT: See COPYING in the top level directory * PROJECT: ReactOS Mouse class driver * FILE: drivers/input/mouclass/misc.c * PURPOSE: Miscellaneous operations * * PROGRAMMERS: Herv� Poussineau (hpoussin@reactos.org) */
#include "mouclass.h"
#include <debug.h>
NTSTATUS NTAPIForwardIrpAndForget( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp){ PDEVICE_OBJECT LowerDevice;
ASSERT(!((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsClassDO); LowerDevice = ((PPORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->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, CLASS_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;}