2 * Server-side pipe management
4 * Copyright (C) 1998 Alexandre Julliard
5 * Copyright (C) 2001 Mike McCormack
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26 #include "wine/port.h"
35 #include <sys/types.h>
36 #ifdef HAVE_SYS_SOCKET_H
37 #include <sys/socket.h>
46 #define WIN32_NO_STATUS
62 ps_disconnected_server
,
70 struct object obj
; /* object header */
71 struct fd
*fd
; /* pipe file descriptor */
72 struct fd
*ioctl_fd
; /* file descriptor for ioctls when not connected */
73 struct list entry
; /* entry in named pipe servers list */
74 enum pipe_state state
; /* server state */
75 struct pipe_client
*client
; /* client that this server is connected to */
76 struct named_pipe
*pipe
;
77 struct timeout_user
*flush_poll
;
79 unsigned int options
; /* pipe options */
84 struct object obj
; /* object header */
85 struct fd
*fd
; /* pipe file descriptor */
86 struct pipe_server
*server
; /* server that this client is connected to */
87 unsigned int flags
; /* file flags */
92 struct object obj
; /* object header */
94 unsigned int maxinstances
;
97 unsigned int instances
;
99 struct list servers
; /* list of servers using this pipe */
100 struct async_queue
*waiters
; /* list of clients waiting to connect */
103 struct named_pipe_device
105 struct object obj
; /* object header */
106 struct fd
*fd
; /* pseudo-fd for ioctls */
107 struct namespace *pipes
; /* named pipe namespace */
110 static void named_pipe_dump( struct object
*obj
, int verbose
);
111 static unsigned int named_pipe_map_access( struct object
*obj
, unsigned int access
);
112 static struct object
*named_pipe_open_file( struct object
*obj
, unsigned int access
,
113 unsigned int sharing
, unsigned int options
);
114 static void named_pipe_destroy( struct object
*obj
);
116 static const struct object_ops named_pipe_ops
=
118 sizeof(struct named_pipe
), /* size */
119 named_pipe_dump
, /* dump */
120 no_add_queue
, /* add_queue */
121 NULL
, /* remove_queue */
123 NULL
, /* satisfied */
124 no_signal
, /* signal */
125 no_get_fd
, /* get_fd */
126 named_pipe_map_access
, /* map_access */
127 no_lookup_name
, /* lookup_name */
128 named_pipe_open_file
, /* open_file */
129 no_close_handle
, /* close_handle */
130 named_pipe_destroy
/* destroy */
133 /* server end functions */
134 static void pipe_server_dump( struct object
*obj
, int verbose
);
135 static struct fd
*pipe_server_get_fd( struct object
*obj
);
136 static void pipe_server_destroy( struct object
*obj
);
137 static void pipe_server_flush( struct fd
*fd
, struct event
**event
);
138 static enum server_fd_type
pipe_server_get_fd_type( struct fd
*fd
);
139 static obj_handle_t
pipe_server_ioctl( struct fd
*fd
, ioctl_code_t code
, const async_data_t
*async
,
140 const void *data
, data_size_t size
);
142 static const struct object_ops pipe_server_ops
=
144 sizeof(struct pipe_server
), /* size */
145 pipe_server_dump
, /* dump */
146 add_queue
, /* add_queue */
147 remove_queue
, /* remove_queue */
148 default_fd_signaled
, /* signaled */
149 no_satisfied
, /* satisfied */
150 no_signal
, /* signal */
151 pipe_server_get_fd
, /* get_fd */
152 default_fd_map_access
, /* map_access */
153 no_lookup_name
, /* lookup_name */
154 no_open_file
, /* open_file */
155 fd_close_handle
, /* close_handle */
156 pipe_server_destroy
/* destroy */
159 static const struct fd_ops pipe_server_fd_ops
=
161 default_fd_get_poll_events
, /* get_poll_events */
162 default_poll_event
, /* poll_event */
163 pipe_server_flush
, /* flush */
164 pipe_server_get_fd_type
, /* get_fd_type */
165 pipe_server_ioctl
, /* ioctl */
166 default_fd_queue_async
, /* queue_async */
167 default_fd_reselect_async
, /* reselect_async */
168 default_fd_cancel_async
, /* cancel_async */
171 /* client end functions */
172 static void pipe_client_dump( struct object
*obj
, int verbose
);
173 static struct fd
*pipe_client_get_fd( struct object
*obj
);
174 static void pipe_client_destroy( struct object
*obj
);
175 static void pipe_client_flush( struct fd
*fd
, struct event
**event
);
176 static enum server_fd_type
pipe_client_get_fd_type( struct fd
*fd
);
178 static const struct object_ops pipe_client_ops
=
180 sizeof(struct pipe_client
), /* size */
181 pipe_client_dump
, /* dump */
182 add_queue
, /* add_queue */
183 remove_queue
, /* remove_queue */
184 default_fd_signaled
, /* signaled */
185 no_satisfied
, /* satisfied */
186 no_signal
, /* signal */
187 pipe_client_get_fd
, /* get_fd */
188 default_fd_map_access
, /* map_access */
189 no_lookup_name
, /* lookup_name */
190 no_open_file
, /* open_file */
191 fd_close_handle
, /* close_handle */
192 pipe_client_destroy
/* destroy */
195 static const struct fd_ops pipe_client_fd_ops
=
197 default_fd_get_poll_events
, /* get_poll_events */
198 default_poll_event
, /* poll_event */
199 pipe_client_flush
, /* flush */
200 pipe_client_get_fd_type
, /* get_fd_type */
201 default_fd_ioctl
, /* ioctl */
202 default_fd_queue_async
, /* queue_async */
203 default_fd_reselect_async
, /* reselect_async */
204 default_fd_cancel_async
/* cancel_async */
207 static void named_pipe_device_dump( struct object
*obj
, int verbose
);
208 static struct fd
*named_pipe_device_get_fd( struct object
*obj
);
209 static struct object
*named_pipe_device_lookup_name( struct object
*obj
,
210 struct unicode_str
*name
, unsigned int attr
);
211 static struct object
*named_pipe_device_open_file( struct object
*obj
, unsigned int access
,
212 unsigned int sharing
, unsigned int options
);
213 static void named_pipe_device_destroy( struct object
*obj
);
214 static enum server_fd_type
named_pipe_device_get_fd_type( struct fd
*fd
);
215 static obj_handle_t
named_pipe_device_ioctl( struct fd
*fd
, ioctl_code_t code
, const async_data_t
*async_data
,
216 const void *data
, data_size_t size
);
218 static const struct object_ops named_pipe_device_ops
=
220 sizeof(struct named_pipe_device
), /* size */
221 named_pipe_device_dump
, /* dump */
222 no_add_queue
, /* add_queue */
223 NULL
, /* remove_queue */
225 no_satisfied
, /* satisfied */
226 no_signal
, /* signal */
227 named_pipe_device_get_fd
, /* get_fd */
228 no_map_access
, /* map_access */
229 named_pipe_device_lookup_name
, /* lookup_name */
230 named_pipe_device_open_file
, /* open_file */
231 fd_close_handle
, /* close_handle */
232 named_pipe_device_destroy
/* destroy */
235 static const struct fd_ops named_pipe_device_fd_ops
=
237 default_fd_get_poll_events
, /* get_poll_events */
238 default_poll_event
, /* poll_event */
239 no_flush
, /* flush */
240 named_pipe_device_get_fd_type
, /* get_fd_type */
241 named_pipe_device_ioctl
, /* ioctl */
242 default_fd_queue_async
, /* queue_async */
243 default_fd_reselect_async
, /* reselect_async */
244 default_fd_cancel_async
/* cancel_async */
247 static void named_pipe_dump( struct object
*obj
, int verbose
)
249 struct named_pipe
*pipe
= (struct named_pipe
*) obj
;
250 assert( obj
->ops
== &named_pipe_ops
);
251 fprintf( stderr
, "Named pipe " );
252 dump_object_name( &pipe
->obj
);
253 fprintf( stderr
, "\n" );
256 static unsigned int named_pipe_map_access( struct object
*obj
, unsigned int access
)
258 if (access
& GENERIC_READ
) access
|= STANDARD_RIGHTS_READ
;
259 if (access
& GENERIC_WRITE
) access
|= STANDARD_RIGHTS_WRITE
| FILE_CREATE_PIPE_INSTANCE
;
260 if (access
& GENERIC_EXECUTE
) access
|= STANDARD_RIGHTS_EXECUTE
;
261 if (access
& GENERIC_ALL
) access
|= STANDARD_RIGHTS_ALL
;
262 return access
& ~(GENERIC_READ
| GENERIC_WRITE
| GENERIC_EXECUTE
| GENERIC_ALL
);
265 static void pipe_server_dump( struct object
*obj
, int verbose
)
267 struct pipe_server
*server
= (struct pipe_server
*) obj
;
268 assert( obj
->ops
== &pipe_server_ops
);
269 fprintf( stderr
, "Named pipe server pipe=%p state=%d\n", server
->pipe
, server
->state
);
272 static void pipe_client_dump( struct object
*obj
, int verbose
)
274 struct pipe_client
*client
= (struct pipe_client
*) obj
;
275 assert( obj
->ops
== &pipe_client_ops
);
276 fprintf( stderr
, "Named pipe client server=%p\n", client
->server
);
279 static void named_pipe_destroy( struct object
*obj
)
281 struct named_pipe
*pipe
= (struct named_pipe
*) obj
;
283 assert( list_empty( &pipe
->servers
) );
284 assert( !pipe
->instances
);
285 free_async_queue( pipe
->waiters
);
288 static struct fd
*pipe_client_get_fd( struct object
*obj
)
290 struct pipe_client
*client
= (struct pipe_client
*) obj
;
292 return (struct fd
*) grab_object( client
->fd
);
293 set_error( STATUS_PIPE_DISCONNECTED
);
297 static void set_server_state( struct pipe_server
*server
, enum pipe_state state
)
299 server
->state
= state
;
303 case ps_connected_server
:
304 case ps_wait_disconnect
:
305 assert( server
->fd
);
309 assert( !server
->fd
);
310 set_no_fd_status( server
->ioctl_fd
, STATUS_PIPE_LISTENING
);
312 case ps_disconnected_server
:
313 case ps_wait_connect
:
314 assert( !server
->fd
);
315 set_no_fd_status( server
->ioctl_fd
, STATUS_PIPE_DISCONNECTED
);
320 static struct fd
*pipe_server_get_fd( struct object
*obj
)
322 struct pipe_server
*server
= (struct pipe_server
*) obj
;
324 return (struct fd
*)grab_object( server
->fd
? server
->fd
: server
->ioctl_fd
);
328 static void notify_empty( struct pipe_server
*server
)
330 if (!server
->flush_poll
)
332 assert( server
->state
== ps_connected_server
);
333 assert( server
->event
);
334 remove_timeout_user( server
->flush_poll
);
335 server
->flush_poll
= NULL
;
336 set_event( server
->event
);
337 release_object( server
->event
);
338 server
->event
= NULL
;
341 static void do_disconnect( struct pipe_server
*server
)
343 /* we may only have a server fd, if the client disconnected */
346 assert( server
->client
->server
== server
);
347 assert( server
->client
->fd
);
348 release_object( server
->client
->fd
);
349 server
->client
->fd
= NULL
;
351 assert( server
->fd
);
352 shutdown( get_unix_fd( server
->fd
), SHUT_RDWR
);
353 release_object( server
->fd
);
357 static void pipe_server_destroy( struct object
*obj
)
359 struct pipe_server
*server
= (struct pipe_server
*)obj
;
361 assert( obj
->ops
== &pipe_server_ops
);
365 notify_empty( server
);
366 do_disconnect( server
);
371 server
->client
->server
= NULL
;
372 server
->client
= NULL
;
375 assert( server
->pipe
->instances
);
376 server
->pipe
->instances
--;
378 if (server
->ioctl_fd
) release_object( server
->ioctl_fd
);
379 list_remove( &server
->entry
);
380 release_object( server
->pipe
);
383 static void pipe_client_destroy( struct object
*obj
)
385 struct pipe_client
*client
= (struct pipe_client
*)obj
;
386 struct pipe_server
*server
= client
->server
;
388 assert( obj
->ops
== &pipe_client_ops
);
392 notify_empty( server
);
394 switch(server
->state
)
396 case ps_connected_server
:
397 /* Don't destroy the server's fd here as we can't
398 do a successful flush without it. */
399 set_server_state( server
, ps_wait_disconnect
);
401 case ps_disconnected_server
:
402 set_server_state( server
, ps_wait_connect
);
406 case ps_wait_disconnect
:
407 case ps_wait_connect
:
410 assert( server
->client
);
411 server
->client
= NULL
;
412 client
->server
= NULL
;
414 if (client
->fd
) release_object( client
->fd
);
417 static void named_pipe_device_dump( struct object
*obj
, int verbose
)
419 assert( obj
->ops
== &named_pipe_device_ops
);
420 fprintf( stderr
, "Named pipe device\n" );
423 static struct fd
*named_pipe_device_get_fd( struct object
*obj
)
425 struct named_pipe_device
*device
= (struct named_pipe_device
*)obj
;
426 return (struct fd
*)grab_object( device
->fd
);
429 static struct object
*named_pipe_device_lookup_name( struct object
*obj
, struct unicode_str
*name
,
432 struct named_pipe_device
*device
= (struct named_pipe_device
*)obj
;
433 struct object
*found
;
435 assert( obj
->ops
== &named_pipe_device_ops
);
436 assert( device
->pipes
);
438 if ((found
= find_object( device
->pipes
, name
, attr
| OBJ_CASE_INSENSITIVE
)))
444 static struct object
*named_pipe_device_open_file( struct object
*obj
, unsigned int access
,
445 unsigned int sharing
, unsigned int options
)
447 return grab_object( obj
);
450 static void named_pipe_device_destroy( struct object
*obj
)
452 struct named_pipe_device
*device
= (struct named_pipe_device
*)obj
;
453 assert( obj
->ops
== &named_pipe_device_ops
);
454 if (device
->fd
) release_object( device
->fd
);
455 free( device
->pipes
);
458 static enum server_fd_type
named_pipe_device_get_fd_type( struct fd
*fd
)
460 return FD_TYPE_DEVICE
;
463 void create_named_pipe_device( struct directory
*root
, const struct unicode_str
*name
)
465 struct named_pipe_device
*dev
;
467 if ((dev
= create_named_object_dir( root
, name
, 0, &named_pipe_device_ops
)) &&
468 get_error() != STATUS_OBJECT_NAME_EXISTS
)
471 if (!(dev
->fd
= alloc_pseudo_fd( &named_pipe_device_fd_ops
, &dev
->obj
, 0 )) ||
472 !(dev
->pipes
= create_namespace( 7 )))
474 release_object( dev
);
478 if (dev
) make_object_static( &dev
->obj
);
481 static int pipe_data_remaining( struct pipe_server
*server
)
486 assert( server
->client
);
488 fd
= get_unix_fd( server
->client
->fd
);
495 if (0 > poll( &pfd
, 1, 0 ))
498 return pfd
.revents
&POLLIN
;
501 static void check_flushed( void *arg
)
503 struct pipe_server
*server
= (struct pipe_server
*) arg
;
505 assert( server
->event
);
506 if (pipe_data_remaining( server
))
508 server
->flush_poll
= add_timeout_user( -TICKS_PER_SEC
/ 10, check_flushed
, server
);
512 /* notify_empty( server ); */
513 server
->flush_poll
= NULL
;
514 set_event( server
->event
);
515 release_object( server
->event
);
516 server
->event
= NULL
;
520 static void pipe_server_flush( struct fd
*fd
, struct event
**event
)
522 struct pipe_server
*server
= get_fd_user( fd
);
524 if (!server
|| server
->state
!= ps_connected_server
) return;
526 /* FIXME: if multiple threads flush the same pipe,
527 maybe should create a list of processes to notify */
528 if (server
->flush_poll
) return;
530 if (pipe_data_remaining( server
))
532 /* this kind of sux -
533 there's no unix way to be alerted when a pipe becomes empty */
534 server
->event
= create_event( NULL
, NULL
, 0, 0, 0 );
535 if (!server
->event
) return;
536 server
->flush_poll
= add_timeout_user( -TICKS_PER_SEC
/ 10, check_flushed
, server
);
537 *event
= server
->event
;
541 static void pipe_client_flush( struct fd
*fd
, struct event
**event
)
543 /* FIXME: what do we have to do for this? */
546 static inline int is_overlapped( unsigned int options
)
548 return !(options
& (FILE_SYNCHRONOUS_IO_ALERT
| FILE_SYNCHRONOUS_IO_NONALERT
));
551 static enum server_fd_type
pipe_server_get_fd_type( struct fd
*fd
)
556 static enum server_fd_type
pipe_client_get_fd_type( struct fd
*fd
)
561 static obj_handle_t
alloc_wait_event( struct process
*process
)
563 obj_handle_t handle
= 0;
564 struct event
*event
= create_event( NULL
, NULL
, 0, 1, 0 );
568 handle
= alloc_handle( process
, event
, EVENT_ALL_ACCESS
, 0 );
569 release_object( event
);
574 static obj_handle_t
pipe_server_ioctl( struct fd
*fd
, ioctl_code_t code
, const async_data_t
*async_data
,
575 const void *data
, data_size_t size
)
577 struct pipe_server
*server
= get_fd_user( fd
);
579 obj_handle_t wait_handle
= 0;
583 case FSCTL_PIPE_LISTEN
:
584 switch(server
->state
)
587 case ps_wait_connect
:
588 if (!async_data
->event
&& !async_data
->apc
)
590 async_data_t new_data
= *async_data
;
591 if (!(wait_handle
= alloc_wait_event( current
->process
))) break;
592 new_data
.event
= wait_handle
;
593 if (!(async
= fd_queue_async( server
->ioctl_fd
, &new_data
, ASYNC_TYPE_WAIT
, 0 )))
595 close_handle( current
->process
, wait_handle
);
599 else async
= fd_queue_async( server
->ioctl_fd
, async_data
, ASYNC_TYPE_WAIT
, 0 );
603 set_server_state( server
, ps_wait_open
);
604 if (server
->pipe
->waiters
) async_wake_up( server
->pipe
->waiters
, STATUS_SUCCESS
);
605 release_object( async
);
606 set_error( STATUS_PENDING
);
610 case ps_connected_server
:
611 set_error( STATUS_PIPE_CONNECTED
);
613 case ps_disconnected_server
:
614 set_error( STATUS_PIPE_BUSY
);
616 case ps_wait_disconnect
:
617 set_error( STATUS_NO_DATA_DETECTED
);
620 set_error( STATUS_INVALID_HANDLE
);
625 case FSCTL_PIPE_DISCONNECT
:
626 switch(server
->state
)
628 case ps_connected_server
:
629 assert( server
->client
);
630 assert( server
->client
->fd
);
632 notify_empty( server
);
634 /* dump the client and server fds, but keep the pointers
635 around - client loses all waiting data */
636 do_disconnect( server
);
637 set_server_state( server
, ps_disconnected_server
);
639 case ps_wait_disconnect
:
640 assert( !server
->client
);
641 do_disconnect( server
);
642 set_server_state( server
, ps_wait_connect
);
646 set_error( STATUS_PIPE_LISTENING
);
648 case ps_disconnected_server
:
649 case ps_wait_connect
:
650 set_error( STATUS_PIPE_DISCONNECTED
);
656 return default_fd_ioctl( fd
, code
, async_data
, data
, size
);
660 static struct named_pipe
*create_named_pipe( struct directory
*root
, const struct unicode_str
*name
,
664 struct named_pipe
*pipe
= NULL
;
665 struct unicode_str new_name
;
667 if (!name
|| !name
->len
) return alloc_object( &named_pipe_ops
);
669 if (!(obj
= find_object_dir( root
, name
, attr
, &new_name
)))
671 set_error( STATUS_OBJECT_NAME_INVALID
);
676 if (attr
& OBJ_OPENIF
&& obj
->ops
== &named_pipe_ops
)
677 set_error( STATUS_OBJECT_NAME_EXISTS
);
680 release_object( obj
);
682 if (attr
& OBJ_OPENIF
)
683 set_error( STATUS_OBJECT_TYPE_MISMATCH
);
685 set_error( STATUS_OBJECT_NAME_COLLISION
);
687 return (struct named_pipe
*)obj
;
690 if (obj
->ops
!= &named_pipe_device_ops
)
691 set_error( STATUS_OBJECT_NAME_INVALID
);
694 struct named_pipe_device
*dev
= (struct named_pipe_device
*)obj
;
695 if ((pipe
= create_object( dev
->pipes
, &named_pipe_ops
, &new_name
, NULL
)))
699 release_object( obj
);
703 static struct pipe_server
*get_pipe_server_obj( struct process
*process
,
704 obj_handle_t handle
, unsigned int access
)
707 obj
= get_handle_obj( process
, handle
, access
, &pipe_server_ops
);
708 return (struct pipe_server
*) obj
;
711 static struct pipe_server
*create_pipe_server( struct named_pipe
*pipe
, unsigned int options
)
713 struct pipe_server
*server
;
715 server
= alloc_object( &pipe_server_ops
);
721 server
->client
= NULL
;
722 server
->flush_poll
= NULL
;
723 server
->options
= options
;
725 list_add_head( &pipe
->servers
, &server
->entry
);
727 if (!(server
->ioctl_fd
= alloc_pseudo_fd( &pipe_server_fd_ops
, &server
->obj
, options
)))
729 release_object( server
);
732 set_server_state( server
, ps_idle_server
);
736 static struct pipe_client
*create_pipe_client( unsigned int flags
)
738 struct pipe_client
*client
;
740 client
= alloc_object( &pipe_client_ops
);
745 client
->server
= NULL
;
746 client
->flags
= flags
;
751 static struct pipe_server
*find_available_server( struct named_pipe
*pipe
)
753 struct pipe_server
*server
;
755 LIST_FOR_EACH_ENTRY( server
, &pipe
->servers
, struct pipe_server
, entry
)
757 if (server
->state
== ps_idle_server
|| server
->state
== ps_wait_open
)
758 return (struct pipe_server
*)grab_object( server
);
763 static struct object
*named_pipe_open_file( struct object
*obj
, unsigned int access
,
764 unsigned int sharing
, unsigned int options
)
766 struct named_pipe
*pipe
= (struct named_pipe
*)obj
;
767 struct pipe_server
*server
;
768 struct pipe_client
*client
;
771 if (!(server
= find_available_server( pipe
)))
773 set_error( STATUS_PIPE_NOT_AVAILABLE
);
777 if ((client
= create_pipe_client( options
)))
779 if (!socketpair( PF_UNIX
, SOCK_STREAM
, 0, fds
))
781 assert( !server
->fd
);
783 /* for performance reasons, only set nonblocking mode when using
784 * overlapped I/O. Otherwise, we will be doing too much busy
786 if (is_overlapped( options
)) fcntl( fds
[1], F_SETFL
, O_NONBLOCK
);
787 if (is_overlapped( server
->options
)) fcntl( fds
[0], F_SETFL
, O_NONBLOCK
);
791 setsockopt( fds
[0], SOL_SOCKET
, SO_RCVBUF
, &pipe
->insize
, sizeof(pipe
->insize
) );
792 setsockopt( fds
[1], SOL_SOCKET
, SO_RCVBUF
, &pipe
->insize
, sizeof(pipe
->insize
) );
796 setsockopt( fds
[0], SOL_SOCKET
, SO_SNDBUF
, &pipe
->outsize
, sizeof(pipe
->outsize
) );
797 setsockopt( fds
[1], SOL_SOCKET
, SO_SNDBUF
, &pipe
->outsize
, sizeof(pipe
->outsize
) );
800 client
->fd
= create_anonymous_fd( &pipe_client_fd_ops
, fds
[1], &client
->obj
, options
);
801 server
->fd
= create_anonymous_fd( &pipe_server_fd_ops
, fds
[0], &server
->obj
, server
->options
);
802 if (client
->fd
&& server
->fd
)
804 if (server
->state
== ps_wait_open
)
805 fd_async_wake_up( server
->ioctl_fd
, ASYNC_TYPE_WAIT
, STATUS_SUCCESS
);
806 set_server_state( server
, ps_connected_server
);
807 server
->client
= client
;
808 client
->server
= server
;
812 release_object( client
);
819 release_object( client
);
823 release_object( server
);
827 static obj_handle_t
named_pipe_device_ioctl( struct fd
*fd
, ioctl_code_t code
, const async_data_t
*async_data
,
828 const void *data
, data_size_t size
)
830 struct named_pipe_device
*device
= get_fd_user( fd
);
834 case FSCTL_PIPE_WAIT
:
836 const FILE_PIPE_WAIT_FOR_BUFFER
*buffer
= data
;
837 obj_handle_t wait_handle
= 0;
838 struct named_pipe
*pipe
;
839 struct pipe_server
*server
;
840 struct unicode_str name
;
842 if (size
< sizeof(*buffer
) ||
843 size
< FIELD_OFFSET(FILE_PIPE_WAIT_FOR_BUFFER
, Name
[buffer
->NameLength
/sizeof(WCHAR
)]))
845 set_error( STATUS_INVALID_PARAMETER
);
848 name
.str
= buffer
->Name
;
849 name
.len
= (buffer
->NameLength
/ sizeof(WCHAR
)) * sizeof(WCHAR
);
850 if (!(pipe
= (struct named_pipe
*)find_object( device
->pipes
, &name
, OBJ_CASE_INSENSITIVE
)))
852 set_error( STATUS_PIPE_NOT_AVAILABLE
);
855 if (!(server
= find_available_server( pipe
)))
859 if (!pipe
->waiters
&& !(pipe
->waiters
= create_async_queue( NULL
))) goto done
;
861 if (!async_data
->event
&& !async_data
->apc
)
863 async_data_t new_data
= *async_data
;
864 if (!(wait_handle
= alloc_wait_event( current
->process
))) goto done
;
865 new_data
.event
= wait_handle
;
866 if (!(async
= create_async( current
, pipe
->waiters
, &new_data
)))
868 close_handle( current
->process
, wait_handle
);
872 else async
= create_async( current
, pipe
->waiters
, async_data
);
876 timeout_t when
= buffer
->TimeoutSpecified
? buffer
->Timeout
.QuadPart
: pipe
->timeout
;
877 async_set_timeout( async
, when
, STATUS_IO_TIMEOUT
);
878 release_object( async
);
879 set_error( STATUS_PENDING
);
882 else release_object( server
);
885 release_object( pipe
);
890 return default_fd_ioctl( fd
, code
, async_data
, data
, size
);
895 DECL_HANDLER(create_named_pipe
)
897 struct named_pipe
*pipe
;
898 struct pipe_server
*server
;
899 struct unicode_str name
;
900 struct directory
*root
= NULL
;
903 get_req_unicode_str( &name
);
904 if (req
->rootdir
&& !(root
= get_directory_obj( current
->process
, req
->rootdir
, 0 )))
907 pipe
= create_named_pipe( root
, &name
, req
->attributes
| OBJ_OPENIF
);
909 if (root
) release_object( root
);
912 if (get_error() != STATUS_OBJECT_NAME_EXISTS
)
914 /* initialize it if it didn't already exist */
916 pipe
->waiters
= NULL
;
917 list_init( &pipe
->servers
);
918 pipe
->insize
= req
->insize
;
919 pipe
->outsize
= req
->outsize
;
920 pipe
->maxinstances
= req
->maxinstances
;
921 pipe
->timeout
= req
->timeout
;
922 pipe
->flags
= req
->flags
;
926 if (pipe
->maxinstances
<= pipe
->instances
)
928 set_error( STATUS_INSTANCE_NOT_AVAILABLE
);
929 release_object( pipe
);
932 if ((pipe
->maxinstances
!= req
->maxinstances
) ||
933 (pipe
->timeout
!= req
->timeout
) ||
934 (pipe
->flags
!= req
->flags
))
936 set_error( STATUS_ACCESS_DENIED
);
937 release_object( pipe
);
940 clear_error(); /* clear the name collision */
943 server
= create_pipe_server( pipe
, req
->options
);
946 reply
->handle
= alloc_handle( current
->process
, server
, req
->access
, req
->attributes
);
947 server
->pipe
->instances
++;
948 release_object( server
);
951 release_object( pipe
);
954 DECL_HANDLER(get_named_pipe_info
)
956 struct pipe_server
*server
;
957 struct pipe_client
*client
= NULL
;
959 server
= get_pipe_server_obj( current
->process
, req
->handle
, FILE_READ_ATTRIBUTES
);
963 client
= (struct pipe_client
*)get_handle_obj( current
->process
, req
->handle
,
964 FILE_READ_ATTRIBUTES
, &pipe_client_ops
);
966 server
= client
->server
;
969 reply
->flags
= server
->pipe
->flags
;
970 reply
->maxinstances
= server
->pipe
->maxinstances
;
971 reply
->instances
= server
->pipe
->instances
;
972 reply
->insize
= server
->pipe
->insize
;
973 reply
->outsize
= server
->pipe
->outsize
;
976 release_object(client
);
979 reply
->flags
|= NAMED_PIPE_SERVER_END
;
980 release_object(server
);