1 /* $Id: fsctrl.c,v 1.7 2001/10/21 18:58:31 chorns Exp $
3 * COPYRIGHT: See COPYING in the top level directory
4 * PROJECT: ReactOS kernel
5 * FILE: services/fs/np/fsctrl.c
6 * PURPOSE: Named pipe filesystem
7 * PROGRAMMER: David Welch <welch@cwcom.net>
8 * Eric Kohl <ekohl@rz-online.de>
11 /* INCLUDES ******************************************************************/
13 #include <ddk/ntddk.h>
20 /* FUNCTIONS *****************************************************************/
23 NpfsConnectPipe(PNPFS_FCB Fcb
)
26 PLIST_ENTRY current_entry
;
30 DPRINT("NpfsConnectPipe()\n");
32 if (Fcb
->PipeState
== FILE_PIPE_CONNECTED_STATE
)
33 return STATUS_PIPE_CONNECTED
;
35 if (Fcb
->PipeState
== FILE_PIPE_CLOSING_STATE
)
36 return STATUS_PIPE_CLOSING
;
39 * Acceptable states are: FILE_PIPE_DISCONNECTED_STATE and
40 * FILE_PIPE_LISTENING_STATE
43 DPRINT("Waiting for connection...\n");
47 Fcb
->PipeState
= FILE_PIPE_LISTENING_STATE
;
49 /* search for a listening client fcb */
51 current_entry
= Pipe
->ClientFcbListHead
.Flink
;
52 while (current_entry
!= &Pipe
->ClientFcbListHead
)
54 ClientFcb
= CONTAINING_RECORD(current_entry
,
58 if ((ClientFcb
->PipeState
== FILE_PIPE_LISTENING_STATE
)
59 || (ClientFcb
->PipeState
== FILE_PIPE_DISCONNECTED_STATE
))
64 current_entry
= current_entry
->Flink
;
67 if ((current_entry
!= &Pipe
->ClientFcbListHead
)
68 && (ClientFcb
->PipeState
== FILE_PIPE_LISTENING_STATE
))
70 /* found a listening client fcb */
71 DPRINT("Listening client fcb found -- connecting\n");
73 /* connect client and server fcb's */
74 Fcb
->OtherSide
= ClientFcb
;
75 ClientFcb
->OtherSide
= Fcb
;
77 /* set connected state */
78 Fcb
->PipeState
= FILE_PIPE_CONNECTED_STATE
;
79 ClientFcb
->PipeState
= FILE_PIPE_CONNECTED_STATE
;
81 /* FIXME: create and initialize data queues */
83 /* signal client's connect event */
84 KeSetEvent(&ClientFcb
->ConnectEvent
, IO_NO_INCREMENT
, FALSE
);
87 else if ((current_entry
!= &Pipe
->ClientFcbListHead
)
88 && (ClientFcb
->PipeState
== FILE_PIPE_DISCONNECTED_STATE
))
90 /* found a disconnected client fcb */
91 DPRINT("Disconnected client fcb found - notifying client\n");
93 /* signal client's connect event */
94 KeSetEvent(&ClientFcb
->ConnectEvent
, IO_NO_INCREMENT
, FALSE
);
98 /* no listening client fcb found */
99 DPRINT("No listening client fcb found -- waiting for client\n");
100 Status
= KeWaitForSingleObject(&Fcb
->ConnectEvent
,
106 DPRINT("Finished waiting! Status: %x\n", Status
);
110 DPRINT("Client Fcb: %p\n", Fcb
->OtherSide
);
112 return STATUS_PIPE_CONNECTED
;
117 NpfsDisconnectPipe(PNPFS_FCB Fcb
)
121 DPRINT("NpfsDisconnectPipe()\n");
123 if (Fcb
->PipeState
== FILE_PIPE_DISCONNECTED_STATE
)
124 return(STATUS_SUCCESS
);
126 if (Fcb
->PipeState
== FILE_PIPE_CONNECTED_STATE
)
128 Fcb
->PipeState
= FILE_PIPE_DISCONNECTED_STATE
;
129 Fcb
->OtherSide
->PipeState
= FILE_PIPE_DISCONNECTED_STATE
;
131 /* FIXME: remove data queue(s) */
133 Fcb
->OtherSide
->OtherSide
= NULL
;
134 Fcb
->OtherSide
= NULL
;
136 DPRINT("Pipe disconnected\n");
137 return(STATUS_SUCCESS
);
140 if (Fcb
->PipeState
== FILE_PIPE_CLOSING_STATE
)
142 Fcb
->PipeState
= FILE_PIPE_DISCONNECTED_STATE
;
144 /* FIXME: remove data queue(s) */
146 DPRINT("Pipe disconnected\n");
147 return(STATUS_SUCCESS
);
150 return(STATUS_UNSUCCESSFUL
);
155 NpfsWaitPipe(PIRP Irp
,
159 PLIST_ENTRY current_entry
;
161 PNPFS_WAIT_PIPE WaitPipe
;
164 DPRINT("NpfsWaitPipe\n");
166 WaitPipe
= (PNPFS_WAIT_PIPE
)Irp
->AssociatedIrp
.SystemBuffer
;
169 /* search for listening server */
170 current_entry
= Pipe
->ServerFcbListHead
.Flink
;
171 while (current_entry
!= &Pipe
->ServerFcbListHead
)
173 ServerFcb
= CONTAINING_RECORD(current_entry
,
177 if (ServerFcb
->PipeState
== FILE_PIPE_LISTENING_STATE
)
180 current_entry
= current_entry
->Flink
;
183 if (current_entry
!= &Pipe
->ServerFcbListHead
)
185 /* found a listening server fcb */
186 DPRINT("Listening server fcb found -- connecting\n");
188 Status
= STATUS_SUCCESS
;
192 /* no listening server fcb found -- wait for one */
193 Fcb
->PipeState
= FILE_PIPE_LISTENING_STATE
;
195 Status
= KeWaitForSingleObject(&Fcb
->ConnectEvent
,
209 PIO_STACK_LOCATION IrpSp
)
211 * FUNCTION: Return current state of a pipe
213 * Irp = Pointer to I/O request packet
214 * IrpSp = Pointer to current stack location of Irp
216 * Status of operation
219 ULONG OutputBufferLength
;
220 PNPFS_GET_STATE Reply
;
225 OutputBufferLength
= IrpSp
->Parameters
.DeviceIoControl
.OutputBufferLength
;
227 /* Validate parameters */
228 if (OutputBufferLength
>= sizeof(NPFS_GET_STATE
))
230 Fcb
= IrpSp
->FileObject
->FsContext
;
231 Reply
= (PNPFS_GET_STATE
)Irp
->AssociatedIrp
.SystemBuffer
;
234 if (Pipe
->PipeWriteMode
== FILE_PIPE_MESSAGE_MODE
)
236 Reply
->WriteModeMessage
= TRUE
;
240 Reply
->WriteModeMessage
= FALSE
;
243 if (Pipe
->PipeReadMode
== FILE_PIPE_MESSAGE_MODE
)
245 Reply
->ReadModeMessage
= TRUE
;
249 Reply
->ReadModeMessage
= FALSE
;
252 if (Pipe
->PipeBlockMode
== FILE_PIPE_QUEUE_OPERATION
)
254 Reply
->NonBlocking
= TRUE
;
258 Reply
->NonBlocking
= FALSE
;
261 Reply
->InBufferSize
= Pipe
->InboundQuota
;
263 Reply
->OutBufferSize
= Pipe
->OutboundQuota
;
265 Reply
->Timeout
= Pipe
->TimeOut
;
267 Status
= STATUS_SUCCESS
;
271 Status
= STATUS_INVALID_PARAMETER
;
274 DPRINT("Status (0x%X).\n", Status
);
283 PIO_STACK_LOCATION IrpSp
)
285 * FUNCTION: Set state of a pipe
287 * Irp = Pointer to I/O request packet
288 * IrpSp = Pointer to current stack location of Irp
290 * Status of operation
293 ULONG InputBufferLength
;
294 PNPFS_SET_STATE Request
;
299 InputBufferLength
= IrpSp
->Parameters
.DeviceIoControl
.InputBufferLength
;
301 /* Validate parameters */
302 if (InputBufferLength
>= sizeof(NPFS_SET_STATE
))
304 Fcb
= IrpSp
->FileObject
->FsContext
;
305 Request
= (PNPFS_SET_STATE
)Irp
->AssociatedIrp
.SystemBuffer
;
308 if (Request
->WriteModeMessage
)
310 Pipe
->PipeWriteMode
= FILE_PIPE_MESSAGE_MODE
;
314 Pipe
->PipeWriteMode
= FILE_PIPE_BYTE_STREAM_MODE
;
317 if (Request
->ReadModeMessage
)
319 Pipe
->PipeReadMode
= FILE_PIPE_MESSAGE_MODE
;
323 Pipe
->PipeReadMode
= FILE_PIPE_BYTE_STREAM_MODE
;
326 if (Request
->NonBlocking
)
328 Pipe
->PipeBlockMode
= FILE_PIPE_QUEUE_OPERATION
;
332 Pipe
->PipeBlockMode
= FILE_PIPE_COMPLETE_OPERATION
;
335 Pipe
->InboundQuota
= Request
->InBufferSize
;
337 Pipe
->OutboundQuota
= Request
->OutBufferSize
;
339 Pipe
->TimeOut
= Request
->Timeout
;
341 Status
= STATUS_SUCCESS
;
345 Status
= STATUS_INVALID_PARAMETER
;
348 DPRINT("Status (0x%X).\n", Status
);
355 NpfsFileSystemControl(PDEVICE_OBJECT DeviceObject
,
358 PIO_STACK_LOCATION IoStack
;
359 PFILE_OBJECT FileObject
;
361 PNPFS_DEVICE_EXTENSION DeviceExt
;
365 DPRINT("NpfsFileSystemContol(DeviceObject %p Irp %p)\n", DeviceObject
, Irp
);
367 DeviceExt
= (PNPFS_DEVICE_EXTENSION
)DeviceObject
->DeviceExtension
;
368 IoStack
= IoGetCurrentIrpStackLocation(Irp
);
369 DPRINT("IoStack: %p\n", IoStack
);
370 FileObject
= IoStack
->FileObject
;
371 DPRINT("FileObject: %p\n", FileObject
);
372 Fcb
= FileObject
->FsContext
;
373 DPRINT("Fcb: %p\n", Fcb
);
375 DPRINT("Pipe: %p\n", Pipe
);
376 DPRINT("PipeName: %wZ\n", &Pipe
->PipeName
);
378 switch (IoStack
->Parameters
.FileSystemControl
.IoControlCode
)
380 case FSCTL_PIPE_ASSIGN_EVENT
:
381 DPRINT("Assign event\n");
382 Status
= STATUS_NOT_IMPLEMENTED
;
385 case FSCTL_PIPE_DISCONNECT
:
386 DPRINT("Disconnecting pipe %wZ\n", &Pipe
->PipeName
);
387 Status
= NpfsDisconnectPipe(Fcb
);
390 case FSCTL_PIPE_LISTEN
:
391 DPRINT("Connecting pipe %wZ\n", &Pipe
->PipeName
);
392 Status
= NpfsConnectPipe(Fcb
);
395 case FSCTL_PIPE_PEEK
:
397 Status
= STATUS_NOT_IMPLEMENTED
;
400 case FSCTL_PIPE_QUERY_EVENT
:
401 DPRINT("Query event\n");
402 Status
= STATUS_NOT_IMPLEMENTED
;
405 case FSCTL_PIPE_TRANSCEIVE
:
406 DPRINT("Transceive\n");
407 Status
= STATUS_NOT_IMPLEMENTED
;
410 case FSCTL_PIPE_WAIT
:
411 DPRINT("Waiting for pipe %wZ\n", &Pipe
->PipeName
);
412 Status
= NpfsWaitPipe(Irp
, Fcb
);
415 case FSCTL_PIPE_IMPERSONATE
:
416 DPRINT("Impersonate\n");
417 Status
= STATUS_NOT_IMPLEMENTED
;
420 case FSCTL_PIPE_SET_CLIENT_PROCESS
:
421 DPRINT("Set client process\n");
422 Status
= STATUS_NOT_IMPLEMENTED
;
425 case FSCTL_PIPE_QUERY_CLIENT_PROCESS
:
426 DPRINT("Query client process\n");
427 Status
= STATUS_NOT_IMPLEMENTED
;
430 case FSCTL_PIPE_GET_STATE
:
431 DPRINT("Get state\n");
432 Status
= NpfsGetState(Irp
, IoStack
);
435 case FSCTL_PIPE_SET_STATE
:
436 DPRINT("Set state\n");
437 Status
= NpfsSetState(Irp
, IoStack
);
440 case FSCTL_PIPE_INTERNAL_READ
:
441 DPRINT("Internal read\n");
442 Status
= STATUS_NOT_IMPLEMENTED
;
445 case FSCTL_PIPE_INTERNAL_WRITE
:
446 DPRINT("Internal write\n");
447 Status
= STATUS_NOT_IMPLEMENTED
;
450 case FSCTL_PIPE_INTERNAL_TRANSCEIVE
:
451 DPRINT("Internal transceive\n");
452 Status
= STATUS_NOT_IMPLEMENTED
;
455 case FSCTL_PIPE_INTERNAL_READ_OVFLOW
:
456 DPRINT("Internal read overflow\n");
457 Status
= STATUS_NOT_IMPLEMENTED
;
461 DPRINT("IoControlCode: %x\n", IoStack
->Parameters
.FileSystemControl
.IoControlCode
)
462 Status
= STATUS_UNSUCCESSFUL
;
465 Irp
->IoStatus
.Status
= Status
;
466 Irp
->IoStatus
.Information
= 0;
468 IoCompleteRequest(Irp
, IO_NO_INCREMENT
);