{
PLPCP_MESSAGE Message;
PLIST_ENTRY ListEntry;
+
PAGED_CODE();
/* Check if the port we want is the connection port */
IN ULONG MessageType,
IN PCLIENT_ID ClientId)
{
- /* Set the Message size */
LPCTRACE((LPC_REPLY_DEBUG | LPC_SEND_DEBUG),
"Destination/Origin: %p/%p. Data: %p. Length: %lx\n",
Destination,
Origin,
Data,
Origin->u1.Length);
+
+ /* Set the Message size */
Destination->u1.Length = Origin->u1.Length;
/* Set the Message Type */
NtReplyPort(IN HANDLE PortHandle,
IN PPORT_MESSAGE ReplyMessage)
{
- PLPCP_PORT_OBJECT Port;
- KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
NTSTATUS Status;
+ KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
+ PORT_MESSAGE CapturedReplyMessage;
+ PLPCP_PORT_OBJECT Port;
PLPCP_MESSAGE Message;
PETHREAD Thread = PsGetCurrentThread(), WakeupThread;
- //PORT_MESSAGE CapturedReplyMessage;
PAGED_CODE();
LPCTRACE(LPC_REPLY_DEBUG,
PortHandle,
ReplyMessage);
- if (KeGetPreviousMode() == UserMode)
+ /* Check if the call comes from user mode */
+ if (PreviousMode != KernelMode)
{
_SEH2_TRY
{
- ProbeForRead(ReplyMessage, sizeof(PORT_MESSAGE), sizeof(ULONG));
- /*RtlCopyMemory(&CapturedReplyMessage, ReplyMessage, sizeof(PORT_MESSAGE));
- ReplyMessage = &CapturedReplyMessage;*/
+ ProbeForRead(ReplyMessage, sizeof(*ReplyMessage), sizeof(ULONG));
+ CapturedReplyMessage = *(volatile PORT_MESSAGE*)ReplyMessage;
}
- _SEH2_EXCEPT(ExSystemExceptionFilter())
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- DPRINT1("SEH crash [1]\n");
- DbgBreakPoint();
_SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
}
+ else
+ {
+ CapturedReplyMessage = *ReplyMessage;
+ }
/* Validate its length */
- if (((ULONG)ReplyMessage->u1.s1.DataLength + sizeof(PORT_MESSAGE)) >
- (ULONG)ReplyMessage->u1.s1.TotalLength)
+ if (((ULONG)CapturedReplyMessage.u1.s1.DataLength + sizeof(PORT_MESSAGE)) >
+ (ULONG)CapturedReplyMessage.u1.s1.TotalLength)
{
/* Fail */
return STATUS_INVALID_PARAMETER;
}
/* Make sure it has a valid ID */
- if (!ReplyMessage->MessageId) return STATUS_INVALID_PARAMETER;
+ if (!CapturedReplyMessage.MessageId) return STATUS_INVALID_PARAMETER;
/* Get the Port object */
Status = ObReferenceObjectByHandle(PortHandle,
if (!NT_SUCCESS(Status)) return Status;
/* Validate its length in respect to the port object */
- if (((ULONG)ReplyMessage->u1.s1.TotalLength > Port->MaxMessageLength) ||
- ((ULONG)ReplyMessage->u1.s1.TotalLength <=
- (ULONG)ReplyMessage->u1.s1.DataLength))
+ if (((ULONG)CapturedReplyMessage.u1.s1.TotalLength > Port->MaxMessageLength) ||
+ ((ULONG)CapturedReplyMessage.u1.s1.TotalLength <=
+ (ULONG)CapturedReplyMessage.u1.s1.DataLength))
{
/* Too large, fail */
ObDereferenceObject(Port);
}
/* Get the ETHREAD corresponding to it */
- Status = PsLookupProcessThreadByCid(&ReplyMessage->ClientId,
+ Status = PsLookupProcessThreadByCid(&CapturedReplyMessage.ClientId,
NULL,
&WakeupThread);
if (!NT_SUCCESS(Status))
KeAcquireGuardedMutex(&LpcpLock);
/* Make sure this is the reply the thread is waiting for */
- if ((WakeupThread->LpcReplyMessageId != ReplyMessage->MessageId) ||
+ if ((WakeupThread->LpcReplyMessageId != CapturedReplyMessage.MessageId) ||
((LpcpGetMessageFromThread(WakeupThread)) &&
- (LpcpGetMessageType(&LpcpGetMessageFromThread(WakeupThread)->
- Request) != LPC_REQUEST)))
+ (LpcpGetMessageType(&LpcpGetMessageFromThread(WakeupThread)-> Request)
+ != LPC_REQUEST)))
{
/* It isn't, fail */
LpcpFreeToPortZone(Message, LPCP_LOCK_HELD | LPCP_LOCK_RELEASE);
_SEH2_TRY
{
LpcpMoveMessage(&Message->Request,
- ReplyMessage,
+ &CapturedReplyMessage,
ReplyMessage + 1,
LPC_REPLY,
NULL);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- /* Fail */
+ /* Cleanup and return the exception code */
LpcpFreeToPortZone(Message, LPCP_LOCK_HELD | LPCP_LOCK_RELEASE);
ObDereferenceObject(WakeupThread);
ObDereferenceObject(Port);
/* Check if this is the message the thread had received */
if ((Thread->LpcReceivedMsgIdValid) &&
- (Thread->LpcReceivedMessageId == ReplyMessage->MessageId))
+ (Thread->LpcReceivedMessageId == CapturedReplyMessage.MessageId))
{
/* Clear this data */
Thread->LpcReceivedMessageId = 0;
/* Free any data information */
LpcpFreeDataInfoMessage(Port,
- ReplyMessage->MessageId,
- ReplyMessage->CallbackId,
- ReplyMessage->ClientId);
+ CapturedReplyMessage.MessageId,
+ CapturedReplyMessage.CallbackId,
+ CapturedReplyMessage.ClientId);
/* Release the lock and release the LPC semaphore to wake up waiters */
KeReleaseGuardedMutex(&LpcpLock);
OUT PPORT_MESSAGE ReceiveMessage,
IN PLARGE_INTEGER Timeout OPTIONAL)
{
- PLPCP_PORT_OBJECT Port, ReceivePort, ConnectionPort = NULL;
- KPROCESSOR_MODE PreviousMode = KeGetPreviousMode(), WaitMode = PreviousMode;
NTSTATUS Status;
+ KPROCESSOR_MODE PreviousMode = KeGetPreviousMode(), WaitMode = PreviousMode;
+ PORT_MESSAGE CapturedReplyMessage;
+ LARGE_INTEGER CapturedTimeout;
+ PLPCP_PORT_OBJECT Port, ReceivePort, ConnectionPort = NULL;
PLPCP_MESSAGE Message;
PETHREAD Thread = PsGetCurrentThread(), WakeupThread;
PLPCP_CONNECTION_MESSAGE ConnectMessage;
ULONG ConnectionInfoLength;
- //PORT_MESSAGE CapturedReplyMessage;
- LARGE_INTEGER CapturedTimeout;
PAGED_CODE();
LPCTRACE(LPC_REPLY_DEBUG,
ReceiveMessage,
PortContext);
- if (KeGetPreviousMode() == UserMode)
+ /* Check if the call comes from user mode */
+ if (PreviousMode != KernelMode)
{
_SEH2_TRY
{
+ if (PortContext != NULL)
+ ProbeForWritePointer(PortContext);
+
if (ReplyMessage != NULL)
{
- ProbeForRead(ReplyMessage, sizeof(PORT_MESSAGE), sizeof(ULONG));
- /*RtlCopyMemory(&CapturedReplyMessage, ReplyMessage, sizeof(PORT_MESSAGE));
- ReplyMessage = &CapturedReplyMessage;*/
+ ProbeForRead(ReplyMessage, sizeof(*ReplyMessage), sizeof(ULONG));
+ CapturedReplyMessage = *(volatile PORT_MESSAGE*)ReplyMessage;
}
if (Timeout != NULL)
{
ProbeForReadLargeInteger(Timeout);
- RtlCopyMemory(&CapturedTimeout, Timeout, sizeof(LARGE_INTEGER));
+ CapturedTimeout = *(volatile LARGE_INTEGER*)Timeout;
Timeout = &CapturedTimeout;
}
-
- if (PortContext != NULL)
- ProbeForWritePointer(PortContext);
}
- _SEH2_EXCEPT(ExSystemExceptionFilter())
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- DPRINT1("SEH crash [1]\n");
- DbgBreakPoint();
_SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
{
/* If this is a system thread, then let it page out its stack */
if (Thread->SystemThread) WaitMode = UserMode;
+
+ if (ReplyMessage != NULL)
+ CapturedReplyMessage = *ReplyMessage;
}
/* Check if caller has a reply message */
if (ReplyMessage)
{
/* Validate its length */
- if (((ULONG)ReplyMessage->u1.s1.DataLength + sizeof(PORT_MESSAGE)) >
- (ULONG)ReplyMessage->u1.s1.TotalLength)
+ if (((ULONG)CapturedReplyMessage.u1.s1.DataLength + sizeof(PORT_MESSAGE)) >
+ (ULONG)CapturedReplyMessage.u1.s1.TotalLength)
{
/* Fail */
return STATUS_INVALID_PARAMETER;
}
/* Make sure it has a valid ID */
- if (!ReplyMessage->MessageId) return STATUS_INVALID_PARAMETER;
+ if (!CapturedReplyMessage.MessageId) return STATUS_INVALID_PARAMETER;
}
/* Get the Port object */
if (ReplyMessage)
{
/* Validate its length in respect to the port object */
- if (((ULONG)ReplyMessage->u1.s1.TotalLength > Port->MaxMessageLength) ||
- ((ULONG)ReplyMessage->u1.s1.TotalLength <=
- (ULONG)ReplyMessage->u1.s1.DataLength))
+ if (((ULONG)CapturedReplyMessage.u1.s1.TotalLength > Port->MaxMessageLength) ||
+ ((ULONG)CapturedReplyMessage.u1.s1.TotalLength <=
+ (ULONG)CapturedReplyMessage.u1.s1.DataLength))
{
/* Too large, fail */
ObDereferenceObject(Port);
if (ReplyMessage)
{
/* Get the ETHREAD corresponding to it */
- Status = PsLookupProcessThreadByCid(&ReplyMessage->ClientId,
+ Status = PsLookupProcessThreadByCid(&CapturedReplyMessage.ClientId,
NULL,
&WakeupThread);
if (!NT_SUCCESS(Status))
KeAcquireGuardedMutex(&LpcpLock);
/* Make sure this is the reply the thread is waiting for */
- if ((WakeupThread->LpcReplyMessageId != ReplyMessage->MessageId) ||
+ if ((WakeupThread->LpcReplyMessageId != CapturedReplyMessage.MessageId) ||
((LpcpGetMessageFromThread(WakeupThread)) &&
- (LpcpGetMessageType(&LpcpGetMessageFromThread(WakeupThread)->
- Request) != LPC_REQUEST)))
+ (LpcpGetMessageType(&LpcpGetMessageFromThread(WakeupThread)->Request)
+ != LPC_REQUEST)))
{
/* It isn't, fail */
LpcpFreeToPortZone(Message, LPCP_LOCK_HELD | LPCP_LOCK_RELEASE);
}
/* Copy the message */
- LpcpMoveMessage(&Message->Request,
- ReplyMessage,
- ReplyMessage + 1,
- LPC_REPLY,
- NULL);
+ _SEH2_TRY
+ {
+ LpcpMoveMessage(&Message->Request,
+ &CapturedReplyMessage,
+ ReplyMessage + 1,
+ LPC_REPLY,
+ NULL);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Cleanup and return the exception code */
+ LpcpFreeToPortZone(Message, LPCP_LOCK_HELD | LPCP_LOCK_RELEASE);
+ if (ConnectionPort) ObDereferenceObject(ConnectionPort);
+ ObDereferenceObject(WakeupThread);
+ ObDereferenceObject(Port);
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
/* Reference the thread while we use it */
ObReferenceObject(WakeupThread);
/* Check if this is the message the thread had received */
if ((Thread->LpcReceivedMsgIdValid) &&
- (Thread->LpcReceivedMessageId == ReplyMessage->MessageId))
+ (Thread->LpcReceivedMessageId == CapturedReplyMessage.MessageId))
{
/* Clear this data */
Thread->LpcReceivedMessageId = 0;
/* Free any data information */
LpcpFreeDataInfoMessage(Port,
- ReplyMessage->MessageId,
- ReplyMessage->CallbackId,
- ReplyMessage->ClientId);
+ CapturedReplyMessage.MessageId,
+ CapturedReplyMessage.CallbackId,
+ CapturedReplyMessage.ClientId);
/* Release the lock and release the LPC semaphore to wake up waiters */
KeReleaseGuardedMutex(&LpcpLock);
if (ReceivePort->Flags & LPCP_WAITABLE_PORT)
{
/* Reset its event */
- KeResetEvent(&ReceivePort->WaitEvent);
+ KeClearEvent(&ReceivePort->WaitEvent);
}
/* Release the lock and fail */
}
/* Get the message on the queue */
- Message = CONTAINING_RECORD(RemoveHeadList(&ReceivePort->
- MsgQueue.ReceiveHead),
+ Message = CONTAINING_RECORD(RemoveHeadList(&ReceivePort->MsgQueue.ReceiveHead),
LPCP_MESSAGE,
Entry);
if (ReceivePort->Flags & LPCP_WAITABLE_PORT)
{
/* Reset its event */
- KeResetEvent(&ReceivePort->WaitEvent);
+ KeClearEvent(&ReceivePort->WaitEvent);
}
}
ASSERT(FALSE);
}
}
- _SEH2_EXCEPT(ExSystemExceptionFilter())
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- DPRINT1("SEH crash [2]\n");
- DbgBreakPoint();
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
IN ULONG Index,
IN PVOID Buffer,
IN ULONG BufferLength,
- OUT PULONG Returnlength)
+ OUT PULONG ReturnLength)
{
- KPROCESSOR_MODE PreviousMode;
+ NTSTATUS Status;
+ KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
PORT_MESSAGE CapturedMessage;
PLPCP_PORT_OBJECT Port = NULL;
PETHREAD ClientThread = NULL;
- ULONG LocalReturnlength;
+ SIZE_T LocalReturnLength;
PLPCP_MESSAGE InfoMessage;
PLPCP_DATA_INFO DataInfo;
PVOID DataInfoBaseAddress;
- NTSTATUS Status;
+
PAGED_CODE();
- /* Check the previous mode */
- PreviousMode = ExGetPreviousMode();
- if (PreviousMode == KernelMode)
- {
- CapturedMessage = *Message;
- }
- else
+ /* Check if the call comes from user mode */
+ if (PreviousMode != KernelMode)
{
_SEH2_TRY
{
ProbeForRead(Message, sizeof(*Message), sizeof(PVOID));
- CapturedMessage = *Message;
+ CapturedMessage = *(volatile PORT_MESSAGE*)Message;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- DPRINT1("Got exception!\n");
- return _SEH2_GetExceptionCode();
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
}
+ else
+ {
+ CapturedMessage = *Message;
+ }
/* Make sure there is any data to copy */
if (CapturedMessage.u2.s2.DataInfoOffset == 0)
DataInfoBaseAddress,
BufferLength,
PreviousMode,
- &LocalReturnlength);
+ &LocalReturnLength);
}
else
{
Buffer,
BufferLength,
PreviousMode,
- &LocalReturnlength);
+ &LocalReturnLength);
}
if (!NT_SUCCESS(Status))
}
/* Check if the caller asked to return the copied length */
- if (Returnlength != NULL)
+ if (ReturnLength != NULL)
{
_SEH2_TRY
{
- *Returnlength = LocalReturnlength;
+ *ReturnLength = LocalReturnLength;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* Ignore */
- DPRINT1("Exception writing Returnlength, ignoring\n");
+ DPRINT1("Exception writing ReturnLength, ignoring\n");
}
_SEH2_END;
}
}
/*
- * @unimplemented
+ * @implemented
*/
NTSTATUS
NTAPI
}
/*
- * @unimplemented
+ * @implemented
*/
NTSTATUS
NTAPI
projects / reactos.git / blobdiff