-/* $Id: fsctrl.c,v 1.4 2001/06/12 12:35:04 ekohl Exp $
- *
+/*
* 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
+#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
-NpfsConnectPipe(PNPFS_FCB Fcb)
+NpfsAddListeningServerInstance(PIRP Irp,
+ PNPFS_FCB Fcb)
{
- NTSTATUS Status;
+ PNPFS_WAITER_ENTRY Entry;
+ KIRQL oldIrql;
+
+ Entry = (PNPFS_WAITER_ENTRY)&Irp->Tail.Overlay.DriverContext;
- DPRINT("Waiting for connection...\n");
+ Entry->Fcb = Fcb;
- Status = KeWaitForSingleObject(&Fcb->ConnectEvent,
- UserRequest,
- KernelMode,
- FALSE,
- NULL);
+ KeLockMutex(&Fcb->Pipe->FcbListLock);
- DPRINT("Finished waiting! Status: %x\n", Status);
+ IoMarkIrpPending(Irp);
+ InsertTailList(&Fcb->Pipe->WaiterListHead, &Entry->Entry);
- DPRINT("Client Fcb: %p\n", Fcb->OtherSide);
+ IoAcquireCancelSpinLock(&oldIrql);
+ if (!Irp->Cancel)
+ {
+ IoSetCancelRoutine(Irp, NpfsListeningCancelRoutine);
+ IoReleaseCancelSpinLock(oldIrql);
+ KeUnlockMutex(&Fcb->Pipe->FcbListLock);
+ return STATUS_PENDING;
+ }
+ IoReleaseCancelSpinLock(oldIrql);
+ RemoveEntryList(&Entry->Entry);
- return STATUS_SUCCESS;
+ Irp->IoStatus.Status = STATUS_CANCELLED;
+ Irp->IoStatus.Information = 0;
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ KeUnlockMutex(&Fcb->Pipe->FcbListLock);
+
+ return STATUS_CANCELLED;
+}
+
+
+static NTSTATUS
+NpfsConnectPipe(PIRP Irp,
+ PNPFS_FCB Fcb)
+{
+ PNPFS_PIPE Pipe;
+ PLIST_ENTRY current_entry;
+ PNPFS_FCB ClientFcb;
+ NTSTATUS Status;
+
+ DPRINT("NpfsConnectPipe()\n");
+
+ if (Fcb->PipeState == FILE_PIPE_CONNECTED_STATE)
+ {
+ KeResetEvent(&Fcb->ConnectEvent);
+ return STATUS_PIPE_CONNECTED;
+ }
+
+ if (Fcb->PipeState == FILE_PIPE_CLOSING_STATE)
+ return STATUS_PIPE_CLOSING;
+
+ DPRINT("Waiting for connection...\n");
+
+ Pipe = Fcb->Pipe;
+
+ /* search for a listening client fcb */
+ KeLockMutex(&Pipe->FcbListLock);
+
+ current_entry = Pipe->ClientFcbListHead.Flink;
+ while (current_entry != &Pipe->ClientFcbListHead)
+ {
+ ClientFcb = CONTAINING_RECORD(current_entry,
+ NPFS_FCB,
+ FcbListEntry);
+
+ if (ClientFcb->PipeState == 0)
+ {
+ /* found a passive (waiting) client fcb */
+ DPRINT("Passive (waiting) client fcb found -- wake the client\n");
+ KeSetEvent(&ClientFcb->ConnectEvent, IO_NO_INCREMENT, FALSE);
+ break;
+ }
+
+#if 0
+ if (ClientFcb->PipeState == FILE_PIPE_LISTENING_STATE)
+ {
+ /* found a listening client fcb */
+ DPRINT("Listening client fcb found -- connecting\n");
+
+ /* connect client and server fcb's */
+ Fcb->OtherSide = ClientFcb;
+ ClientFcb->OtherSide = Fcb;
+
+ /* set connected state */
+ Fcb->PipeState = FILE_PIPE_CONNECTED_STATE;
+ ClientFcb->PipeState = FILE_PIPE_CONNECTED_STATE;
+
+ KeUnlockMutex(&Pipe->FcbListLock);
+
+ /* FIXME: create and initialize data queues */
+
+ /* signal client's connect event */
+ DPRINT("Setting the ConnectEvent for %x\n", ClientFcb);
+ KeSetEvent(&ClientFcb->ConnectEvent, IO_NO_INCREMENT, FALSE);
+
+ return STATUS_PIPE_CONNECTED;
+ }
+#endif
+
+ current_entry = current_entry->Flink;
+ }
+
+ /* no listening client fcb found */
+ DPRINT("No listening client fcb found -- waiting for client\n");
+
+ Fcb->PipeState = FILE_PIPE_LISTENING_STATE;
+
+ Status = NpfsAddListeningServerInstance(Irp, Fcb);
+
+ KeUnlockMutex(&Pipe->FcbListLock);
+
+ DPRINT("NpfsConnectPipe() done (Status %lx)\n", Status);
+
+ return Status;
}
static NTSTATUS
NpfsDisconnectPipe(PNPFS_FCB Fcb)
{
+ NTSTATUS Status;
+ PNPFS_FCB OtherSide;
+ PNPFS_PIPE Pipe;
+ BOOLEAN Server;
- return STATUS_SUCCESS;
+ 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;
+ Fcb->PipeState = FILE_PIPE_DISCONNECTED_STATE;
+ /* 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;
}
static NTSTATUS
-NpfsWaitPipe(PNPFS_FCB Fcb)
+NpfsWaitPipe(PIRP Irp,
+ PNPFS_FCB Fcb)
{
+ PNPFS_PIPE Pipe;
+ PLIST_ENTRY current_entry;
+ PNPFS_FCB ServerFcb;
+ PFILE_PIPE_WAIT_FOR_BUFFER WaitPipe;
+ NTSTATUS Status;
+
+ DPRINT("NpfsWaitPipe\n");
+
+ WaitPipe = (PFILE_PIPE_WAIT_FOR_BUFFER)Irp->AssociatedIrp.SystemBuffer;
+ Pipe = Fcb->Pipe;
+
+ if (Fcb->PipeState != 0)
+ {
+ DPRINT("Pipe is not in passive (waiting) state!\n");
+ return STATUS_UNSUCCESSFUL;
+ }
+
+ /* search for listening server */
+ current_entry = Pipe->ServerFcbListHead.Flink;
+ while (current_entry != &Pipe->ServerFcbListHead)
+ {
+ ServerFcb = CONTAINING_RECORD(current_entry,
+ NPFS_FCB,
+ FcbListEntry);
+
+ if (ServerFcb->PipeState == FILE_PIPE_LISTENING_STATE)
+ {
+ /* found a listening server fcb */
+ DPRINT("Listening server fcb found -- connecting\n");
+
+ return STATUS_SUCCESS;
+ }
+
+ current_entry = current_entry->Flink;
+ }
+
+ /* no listening server fcb found -- wait for one */
+ Status = KeWaitForSingleObject(&Fcb->ConnectEvent,
+ UserRequest,
+ KernelMode,
+ FALSE,
+ &WaitPipe->Timeout);
+
+ DPRINT("KeWaitForSingleObject() returned (Status %lx)\n", Status);
- return STATUS_SUCCESS;
+ return Status;
+}
+
+
+/*
+ * FUNCTION: Return current state of a pipe
+ * ARGUMENTS:
+ * Irp = Pointer to I/O request packet
+ * IrpSp = Pointer to current stack location of Irp
+ * RETURNS:
+ * Status of operation
+ */
+
+/*
+ * FUNCTION: Peek at a pipe (get information about messages)
+ * ARGUMENTS:
+ * Irp = Pointer to I/O request packet
+ * IoStack = Pointer to current stack location of Irp
+ * RETURNS:
+ * Status of operation
+ */
+static NTSTATUS
+NpfsPeekPipe(PIRP Irp,
+ PIO_STACK_LOCATION IoStack)
+{
+ ULONG OutputBufferLength;
+ PNPFS_PIPE Pipe;
+ PFILE_PIPE_PEEK_BUFFER Reply;
+ PNPFS_FCB Fcb;
+ NTSTATUS Status;
+
+ DPRINT("NpfsPeekPipe\n");
+
+ OutputBufferLength = IoStack->Parameters.DeviceIoControl.OutputBufferLength;
+
+ /* Validate parameters */
+ if (OutputBufferLength < sizeof(FILE_PIPE_PEEK_BUFFER))
+ {
+ DPRINT("Buffer too small\n");
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ Fcb = IoStack->FileObject->FsContext;
+ Reply = (PFILE_PIPE_PEEK_BUFFER)Irp->AssociatedIrp.SystemBuffer;
+ Pipe = Fcb->Pipe;
+
+ Status = STATUS_NOT_IMPLEMENTED;
+
+ return Status;
}
NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
- PIO_STACK_LOCATION IoStack;
- PFILE_OBJECT FileObject;
- NTSTATUS Status;
- PNPFS_DEVICE_EXTENSION DeviceExt;
- PNPFS_PIPE Pipe;
- PNPFS_FCB Fcb;
-
- DPRINT("NpfsFileSystemContol(DeviceObject %p Irp %p)\n", DeviceObject, Irp);
-
- DeviceExt = (PNPFS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
- IoStack = IoGetCurrentIrpStackLocation(Irp);
- FileObject = IoStack->FileObject;
- DPRINT("FileObject: %p\n", FileObject);
- Fcb = FileObject->FsContext;
- Pipe = Fcb->Pipe;
-
- switch (IoStack->Parameters.FileSystemControl.IoControlCode)
- {
- case FSCTL_PIPE_LISTEN:
- DPRINT("Connecting pipe %wZ\n", &Pipe->PipeName);
- Status = NpfsConnectPipe(Fcb);
+ PIO_STACK_LOCATION IoStack;
+ PFILE_OBJECT FileObject;
+ NTSTATUS Status;
+ PNPFS_DEVICE_EXTENSION DeviceExt;
+ PNPFS_PIPE Pipe;
+ PNPFS_FCB Fcb;
+
+ DPRINT("NpfsFileSystemContol(DeviceObject %p Irp %p)\n", DeviceObject, Irp);
+
+ DeviceExt = (PNPFS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+ DPRINT("IoStack: %p\n", IoStack);
+ FileObject = IoStack->FileObject;
+ DPRINT("FileObject: %p\n", FileObject);
+ Fcb = FileObject->FsContext;
+ DPRINT("Fcb: %p\n", Fcb);
+ Pipe = Fcb->Pipe;
+ 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:
+ DPRINT("Assign event\n");
+ Status = STATUS_NOT_IMPLEMENTED;
break;
case FSCTL_PIPE_DISCONNECT:
Status = NpfsDisconnectPipe(Fcb);
break;
+ case FSCTL_PIPE_LISTEN:
+ DPRINT("Connecting pipe %wZ\n", &Pipe->PipeName);
+ Status = NpfsConnectPipe(Irp, Fcb);
+ break;
+
+ case FSCTL_PIPE_PEEK:
+ DPRINT("Peeking pipe %wZ\n", &Pipe->PipeName);
+ Status = NpfsPeekPipe(Irp, (PIO_STACK_LOCATION)IoStack);
+ break;
+
+ case FSCTL_PIPE_QUERY_EVENT:
+ DPRINT("Query event\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_TRANSCEIVE:
+ DPRINT("Transceive\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
case FSCTL_PIPE_WAIT:
DPRINT("Waiting for pipe %wZ\n", &Pipe->PipeName);
- Status = NpfsWaitPipe(Fcb);
+ Status = NpfsWaitPipe(Irp, Fcb);
+ break;
+
+ case FSCTL_PIPE_IMPERSONATE:
+ DPRINT("Impersonate\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_SET_CLIENT_PROCESS:
+ DPRINT("Set client process\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_QUERY_CLIENT_PROCESS:
+ DPRINT("Query client process\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_INTERNAL_READ:
+ DPRINT("Internal read\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_INTERNAL_WRITE:
+ DPRINT("Internal write\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_INTERNAL_TRANSCEIVE:
+ DPRINT("Internal transceive\n");
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ case FSCTL_PIPE_INTERNAL_READ_OVFLOW:
+ DPRINT("Internal read overflow\n");
+ Status = STATUS_NOT_IMPLEMENTED;
break;
default:
- DPRINT("IoControlCode: %x\n", IoStack->Parameters.FileSystemControl.IoControlCode)
- Status = STATUS_UNSUCCESSFUL;
- }
-
- Irp->IoStatus.Status = Status;
- Irp->IoStatus.Information = 0;
-
- IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
- return(Status);
+ DPRINT("IoControlCode: %x\n", IoStack->Parameters.FileSystemControl.FsControlCode);
+ Status = STATUS_UNSUCCESSFUL;
+ }
+
+ if (Status != STATUS_PENDING)
+ {
+ Irp->IoStatus.Status = Status;
+
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ }
+
+ return Status;
+}
+
+
+NTSTATUS STDCALL
+NpfsFlushBuffers(PDEVICE_OBJECT DeviceObject,
+ PIRP Irp)
+{
+ /* FIXME: Implement */
+
+ Irp->IoStatus.Status = STATUS_SUCCESS;
+ Irp->IoStatus.Information = 0;
+
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+ return STATUS_SUCCESS;
}
/* EOF */
projects / reactos.git / blobdiff