-/* $Id$
- *
+/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
- * FILE: services/fs/np/fsctrl.c
+ * FILE: drivers/fs/np/fsctrl.c
* PURPOSE: Named pipe filesystem
* PROGRAMMER: David Welch <welch@cwcom.net>
- * Eric Kohl <ekohl@rz-online.de>
+ * Eric Kohl
*/
/* INCLUDES ******************************************************************/
-#include <ddk/ntddk.h>
-#include "npfs.h"
-
#define NDEBUG
#include <debug.h>
+#include "npfs.h"
+
/* FUNCTIONS *****************************************************************/
+static VOID STDCALL
+NpfsListeningCancelRoutine(IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp)
+{
+ PNPFS_WAITER_ENTRY Waiter;
+
+ Waiter = (PNPFS_WAITER_ENTRY)&Irp->Tail.Overlay.DriverContext;
+
+ DPRINT1("NpfsListeningCancelRoutine() called for <%wZ>\n",
+ &Waiter->Fcb->Pipe->PipeName);
+
+ IoReleaseCancelSpinLock(Irp->CancelIrql);
+
+
+ KeLockMutex(&Waiter->Fcb->Pipe->FcbListLock);
+ RemoveEntryList(&Waiter->Entry);
+ KeUnlockMutex(&Waiter->Fcb->Pipe->FcbListLock);
+
+ Irp->IoStatus.Status = STATUS_CANCELLED;
+ Irp->IoStatus.Information = 0;
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+}
+
+
+static NTSTATUS
+NpfsAddListeningServerInstance(PIRP Irp,
+ PNPFS_FCB Fcb)
+{
+ PNPFS_WAITER_ENTRY Entry;
+ KIRQL oldIrql;
+
+ Entry = (PNPFS_WAITER_ENTRY)&Irp->Tail.Overlay.DriverContext;
+
+ Entry->Fcb = Fcb;
+
+ KeLockMutex(&Fcb->Pipe->FcbListLock);
+
+ IoMarkIrpPending(Irp);
+ InsertTailList(&Fcb->Pipe->WaiterListHead, &Entry->Entry);
+
+ IoAcquireCancelSpinLock(&oldIrql);
+ if (!Irp->Cancel)
+ {
+ IoSetCancelRoutine(Irp, NpfsListeningCancelRoutine);
+ IoReleaseCancelSpinLock(oldIrql);
+ KeUnlockMutex(&Fcb->Pipe->FcbListLock);
+ return STATUS_PENDING;
+ }
+ IoReleaseCancelSpinLock(oldIrql);
+
+ RemoveEntryList(&Entry->Entry);
+
+ Irp->IoStatus.Status = STATUS_CANCELLED;
+ Irp->IoStatus.Information = 0;
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ KeUnlockMutex(&Fcb->Pipe->FcbListLock);
+
+ return STATUS_CANCELLED;
+}
+
+
static NTSTATUS
-NpfsConnectPipe(PNPFS_FCB Fcb)
+NpfsConnectPipe(PIRP Irp,
+ PNPFS_FCB Fcb)
{
PNPFS_PIPE Pipe;
PLIST_ENTRY current_entry;
current_entry = current_entry->Flink;
}
- KeUnlockMutex(&Pipe->FcbListLock);
-
/* no listening client fcb found */
DPRINT("No listening client fcb found -- waiting for client\n");
Fcb->PipeState = FILE_PIPE_LISTENING_STATE;
- Status = KeWaitForSingleObject(&Fcb->ConnectEvent,
- UserRequest,
- KernelMode,
- FALSE,
- NULL);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("KeWaitForSingleObject() failed (Status %lx)\n", Status);
- return Status;
- }
+ Status = NpfsAddListeningServerInstance(Irp, Fcb);
- Fcb->PipeState = FILE_PIPE_CONNECTED_STATE;
+ KeUnlockMutex(&Pipe->FcbListLock);
- DPRINT("Client Fcb: %p\n", Fcb->OtherSide);
+ DPRINT("NpfsConnectPipe() done (Status %lx)\n", Status);
- return STATUS_PIPE_CONNECTED;
+ return Status;
}
static NTSTATUS
NpfsDisconnectPipe(PNPFS_FCB Fcb)
{
- DPRINT("NpfsDisconnectPipe()\n");
-
- if (Fcb->PipeState == FILE_PIPE_DISCONNECTED_STATE)
- return STATUS_SUCCESS;
-
- if (Fcb->PipeState == FILE_PIPE_CONNECTED_STATE)
- {
- Fcb->PipeState = FILE_PIPE_DISCONNECTED_STATE;
- /* FIXME: Shouldn't this be FILE_PIPE_CLOSING_STATE? */
- Fcb->OtherSide->PipeState = FILE_PIPE_DISCONNECTED_STATE;
-
- /* FIXME: remove data queue(s) */
-
- Fcb->OtherSide->OtherSide = NULL;
+ NTSTATUS Status;
+ PNPFS_FCB OtherSide;
+ PNPFS_PIPE Pipe;
+ BOOLEAN Server;
+
+ DPRINT("NpfsDisconnectPipe()\n");
+
+ Pipe = Fcb->Pipe;
+ KeLockMutex(&Pipe->FcbListLock);
+
+ if (Fcb->PipeState == FILE_PIPE_DISCONNECTED_STATE)
+ {
+ DPRINT("Pipe is already disconnected\n");
+ Status = STATUS_SUCCESS;
+ }
+ else if (Fcb->PipeState == FILE_PIPE_CONNECTED_STATE)
+ {
+ Server = (Fcb->PipeEnd == FILE_PIPE_SERVER_END);
+ OtherSide = Fcb->OtherSide;
Fcb->OtherSide = NULL;
-
- DPRINT("Pipe disconnected\n");
- return STATUS_SUCCESS;
- }
-
- if (Fcb->PipeState == FILE_PIPE_CLOSING_STATE)
- {
Fcb->PipeState = FILE_PIPE_DISCONNECTED_STATE;
- Fcb->OtherSide = NULL;
-
- /* FIXME: remove data queue(s) */
-
- DPRINT("Pipe disconnected\n");
- return STATUS_SUCCESS;
- }
-
- return STATUS_UNSUCCESSFUL;
+ /* Lock the server first */
+ if (Server)
+ {
+ ExAcquireFastMutex(&Fcb->DataListLock);
+ ExAcquireFastMutex(&OtherSide->DataListLock);
+ }
+ else
+ {
+ ExAcquireFastMutex(&OtherSide->DataListLock);
+ ExAcquireFastMutex(&Fcb->DataListLock);
+ }
+ OtherSide->PipeState = FILE_PIPE_DISCONNECTED_STATE;
+ OtherSide->OtherSide = NULL;
+ /*
+ * Signaling the write event. If is possible that an other
+ * thread waits for an empty buffer.
+ */
+ KeSetEvent(&OtherSide->ReadEvent, IO_NO_INCREMENT, FALSE);
+ KeSetEvent(&OtherSide->WriteEvent, IO_NO_INCREMENT, FALSE);
+ if (Server)
+ {
+ ExReleaseFastMutex(&OtherSide->DataListLock);
+ ExReleaseFastMutex(&Fcb->DataListLock);
+ }
+ else
+ {
+ ExReleaseFastMutex(&Fcb->DataListLock);
+ ExReleaseFastMutex(&OtherSide->DataListLock);
+ }
+ Status = STATUS_SUCCESS;
+ }
+ else if (Fcb->PipeState == FILE_PIPE_LISTENING_STATE)
+ {
+ PLIST_ENTRY Entry;
+ PNPFS_WAITER_ENTRY WaitEntry = NULL;
+ BOOLEAN Complete = FALSE;
+ PIRP Irp = NULL;
+
+ Entry = Fcb->Pipe->WaiterListHead.Flink;
+ while (Entry != &Fcb->Pipe->WaiterListHead)
+ {
+ WaitEntry = CONTAINING_RECORD(Entry, NPFS_WAITER_ENTRY, Entry);
+ if (WaitEntry->Fcb == Fcb)
+ {
+ RemoveEntryList(Entry);
+ Irp = CONTAINING_RECORD(Entry, IRP, Tail.Overlay.DriverContext);
+ Complete = (NULL == IoSetCancelRoutine(Irp, NULL));
+ break;
+ }
+ Entry = Entry->Flink;
+ }
+
+ if (Irp)
+ {
+ if (Complete)
+ {
+ Irp->IoStatus.Status = STATUS_PIPE_BROKEN;
+ Irp->IoStatus.Information = 0;
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ }
+ }
+ Fcb->PipeState = FILE_PIPE_DISCONNECTED_STATE;
+ Status = STATUS_SUCCESS;
+ }
+ else if (Fcb->PipeState == FILE_PIPE_CLOSING_STATE)
+ {
+ Status = STATUS_PIPE_CLOSING;
+ }
+ else
+ {
+ Status = STATUS_UNSUCCESSFUL;
+ }
+ KeUnlockMutex(&Pipe->FcbListLock);
+ return Status;
}
PNPFS_PIPE Pipe;
PLIST_ENTRY current_entry;
PNPFS_FCB ServerFcb;
- PNPFS_WAIT_PIPE WaitPipe;
+ PFILE_PIPE_WAIT_FOR_BUFFER WaitPipe;
NTSTATUS Status;
DPRINT("NpfsWaitPipe\n");
- WaitPipe = (PNPFS_WAIT_PIPE)Irp->AssociatedIrp.SystemBuffer;
+ WaitPipe = (PFILE_PIPE_WAIT_FOR_BUFFER)Irp->AssociatedIrp.SystemBuffer;
Pipe = Fcb->Pipe;
if (Fcb->PipeState != 0)
* RETURNS:
* Status of operation
*/
-static NTSTATUS
-NpfsGetState(PIRP Irp,
- PIO_STACK_LOCATION IrpSp)
-{
- PNPFS_GET_STATE Reply;
- PNPFS_PIPE Pipe;
- PNPFS_FCB Fcb;
-
- /* Validate parameters */
- if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(NPFS_GET_STATE))
- {
- DPRINT("Status (0x%X).\n", STATUS_INVALID_PARAMETER);
- return STATUS_INVALID_PARAMETER;
- }
-
- Fcb = IrpSp->FileObject->FsContext;
- Reply = (PNPFS_GET_STATE)Irp->AssociatedIrp.SystemBuffer;
- Pipe = Fcb->Pipe;
-
- Reply->WriteModeMessage = (Pipe->WriteMode == FILE_PIPE_MESSAGE_MODE);
- Reply->ReadModeMessage = (Pipe->ReadMode == FILE_PIPE_MESSAGE_MODE);
- Reply->NonBlocking = (Pipe->CompletionMode == FILE_PIPE_QUEUE_OPERATION);
- Reply->InBufferSize = Pipe->InboundQuota;
- Reply->OutBufferSize = Pipe->OutboundQuota;
- Reply->Timeout = Pipe->TimeOut;
-
- DPRINT("Status (0x%X).\n", STATUS_SUCCESS);
-
- return STATUS_SUCCESS;
-}
-
-
-/*
- * FUNCTION: Set state of a pipe
- * ARGUMENTS:
- * Irp = Pointer to I/O request packet
- * IrpSp = Pointer to current stack location of Irp
- * RETURNS:
- * Status of operation
- */
-static NTSTATUS
-NpfsSetState(PIRP Irp,
- PIO_STACK_LOCATION IrpSp)
-{
- PNPFS_SET_STATE Request;
- PNPFS_PIPE Pipe;
- PNPFS_FCB Fcb;
-
- /* Validate parameters */
- if (IrpSp->Parameters.DeviceIoControl.InputBufferLength < sizeof(NPFS_SET_STATE))
- {
- DPRINT("Status (0x%X).\n", STATUS_INVALID_PARAMETER);
- return STATUS_INVALID_PARAMETER;
- }
-
- Fcb = IrpSp->FileObject->FsContext;
- Request = (PNPFS_SET_STATE)Irp->AssociatedIrp.SystemBuffer;
- Pipe = Fcb->Pipe;
-
- Pipe->WriteMode =
- Request->WriteModeMessage ? FILE_PIPE_MESSAGE_MODE : FILE_PIPE_BYTE_STREAM_MODE;
- Pipe->ReadMode =
- Request->WriteModeMessage ? FILE_PIPE_MESSAGE_MODE : FILE_PIPE_BYTE_STREAM_MODE;
- Pipe->CompletionMode =
- Request->NonBlocking ? FILE_PIPE_QUEUE_OPERATION : FILE_PIPE_COMPLETE_OPERATION;
- Pipe->InboundQuota = Request->InBufferSize;
- Pipe->OutboundQuota = Request->OutBufferSize;
- Pipe->TimeOut = Request->Timeout;
-
- DPRINT("Status (0x%X).\n", STATUS_SUCCESS);
-
- return STATUS_SUCCESS;
-}
-
/*
* FUNCTION: Peek at a pipe (get information about messages)
}
-
NTSTATUS STDCALL
NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
DPRINT("Pipe: %p\n", Pipe);
DPRINT("PipeName: %wZ\n", &Pipe->PipeName);
+ Irp->IoStatus.Information = 0;
+
switch (IoStack->Parameters.FileSystemControl.FsControlCode)
{
case FSCTL_PIPE_ASSIGN_EVENT:
case FSCTL_PIPE_LISTEN:
DPRINT("Connecting pipe %wZ\n", &Pipe->PipeName);
- Status = NpfsConnectPipe(Fcb);
+ Status = NpfsConnectPipe(Irp, Fcb);
break;
case FSCTL_PIPE_PEEK:
Status = STATUS_NOT_IMPLEMENTED;
break;
- case FSCTL_PIPE_GET_STATE:
- DPRINT("Get state\n");
- Status = NpfsGetState(Irp, (PIO_STACK_LOCATION)IoStack);
- break;
-
- case FSCTL_PIPE_SET_STATE:
- DPRINT("Set state\n");
- Status = NpfsSetState(Irp, (PIO_STACK_LOCATION)IoStack);
- break;
-
case FSCTL_PIPE_INTERNAL_READ:
DPRINT("Internal read\n");
Status = STATUS_NOT_IMPLEMENTED;
break;
default:
- DPRINT("IoControlCode: %x\n", IoStack->Parameters.FileSystemControl.FsControlCode)
+ DPRINT("IoControlCode: %x\n", IoStack->Parameters.FileSystemControl.FsControlCode);
Status = STATUS_UNSUCCESSFUL;
}
- Irp->IoStatus.Status = Status;
- Irp->IoStatus.Information = 0;
+ if (Status != STATUS_PENDING)
+ {
+ Irp->IoStatus.Status = Status;
- IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ }
- return(Status);
+ return Status;
}
projects / reactos.git / blobdiff