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
61 ps_disconnected_server,
69 struct object obj; /* object header */
70 struct fd *fd; /* pipe file descriptor */
71 struct list entry; /* entry in named pipe servers list */
72 enum pipe_state state; /* server state */
73 struct pipe_client *client; /* client that this server is connected to */
74 struct named_pipe *pipe;
75 struct timeout_user *flush_poll;
77 struct list wait_q; /* only a single one can be queued */
78 unsigned int options; /* pipe options */
83 struct object obj; /* object header */
84 struct fd *fd; /* pipe file descriptor */
85 struct pipe_server *server; /* server that this client is connected to */
86 unsigned int flags; /* file flags */
91 struct object obj; /* object header */
93 unsigned int maxinstances;
97 unsigned int instances;
98 struct list servers; /* list of servers using this pipe */
99 struct list waiters; /* list of clients waiting to connect */
102 struct named_pipe_device
104 struct object obj; /* object header */
105 struct fd *fd; /* pseudo-fd for ioctls */
106 struct namespace *pipes; /* named pipe namespace */
109 static void named_pipe_dump( struct object *obj, int verbose );
110 static unsigned int named_pipe_map_access( struct object *obj, unsigned int access );
111 static void named_pipe_destroy( struct object *obj );
113 static const struct object_ops named_pipe_ops =
115 sizeof(struct named_pipe), /* size */
116 named_pipe_dump, /* dump */
117 no_add_queue, /* add_queue */
118 NULL, /* remove_queue */
120 NULL, /* satisfied */
121 no_signal, /* signal */
122 no_get_fd, /* get_fd */
123 named_pipe_map_access, /* map_access */
124 no_lookup_name, /* lookup_name */
125 no_close_handle, /* close_handle */
126 named_pipe_destroy /* destroy */
129 /* functions common to server and client */
130 static unsigned int pipe_map_access( struct object *obj, unsigned int access );
132 /* server end functions */
133 static void pipe_server_dump( struct object *obj, int verbose );
134 static struct fd *pipe_server_get_fd( struct object *obj );
135 static void pipe_server_destroy( struct object *obj);
136 static int pipe_server_flush( struct fd *fd, struct event **event );
137 static enum server_fd_type pipe_server_get_info( struct fd *fd, int *flags );
139 static const struct object_ops pipe_server_ops =
141 sizeof(struct pipe_server), /* size */
142 pipe_server_dump, /* dump */
143 default_fd_add_queue, /* add_queue */
144 default_fd_remove_queue, /* remove_queue */
145 default_fd_signaled, /* signaled */
146 no_satisfied, /* satisfied */
147 no_signal, /* signal */
148 pipe_server_get_fd, /* get_fd */
149 pipe_map_access, /* map_access */
150 no_lookup_name, /* lookup_name */
151 fd_close_handle, /* close_handle */
152 pipe_server_destroy /* destroy */
155 static const struct fd_ops pipe_server_fd_ops =
157 default_fd_get_poll_events, /* get_poll_events */
158 default_poll_event, /* poll_event */
159 pipe_server_flush, /* flush */
160 pipe_server_get_info, /* get_file_info */
161 default_fd_queue_async, /* queue_async */
162 default_fd_cancel_async, /* cancel_async */
165 /* client end functions */
166 static void pipe_client_dump( struct object *obj, int verbose );
167 static struct fd *pipe_client_get_fd( struct object *obj );
168 static void pipe_client_destroy( struct object *obj );
169 static int pipe_client_flush( struct fd *fd, struct event **event );
170 static enum server_fd_type pipe_client_get_info( struct fd *fd, int *flags );
172 static const struct object_ops pipe_client_ops =
174 sizeof(struct pipe_client), /* size */
175 pipe_client_dump, /* dump */
176 default_fd_add_queue, /* add_queue */
177 default_fd_remove_queue, /* remove_queue */
178 default_fd_signaled, /* signaled */
179 no_satisfied, /* satisfied */
180 no_signal, /* signal */
181 pipe_client_get_fd, /* get_fd */
182 pipe_map_access, /* map_access */
183 no_lookup_name, /* lookup_name */
184 fd_close_handle, /* close_handle */
185 pipe_client_destroy /* destroy */
188 static const struct fd_ops pipe_client_fd_ops =
190 default_fd_get_poll_events, /* get_poll_events */
191 default_poll_event, /* poll_event */
192 pipe_client_flush, /* flush */
193 pipe_client_get_info, /* get_file_info */
194 default_fd_queue_async, /* queue_async */
195 default_fd_cancel_async /* cancel_async */
198 static void named_pipe_device_dump( struct object *obj, int verbose );
199 static struct fd *named_pipe_device_get_fd( struct object *obj );
200 static struct object *named_pipe_device_lookup_name( struct object *obj,
201 struct unicode_str *name, unsigned int attr );
202 static void named_pipe_device_destroy( struct object *obj );
203 static enum server_fd_type named_pipe_device_get_file_info( struct fd *fd, int *flags );
205 static const struct object_ops named_pipe_device_ops =
207 sizeof(struct named_pipe_device), /* size */
208 named_pipe_device_dump, /* dump */
209 no_add_queue, /* add_queue */
210 NULL, /* remove_queue */
212 no_satisfied, /* satisfied */
213 no_signal, /* signal */
214 named_pipe_device_get_fd, /* get_fd */
215 pipe_map_access, /* map_access */
216 named_pipe_device_lookup_name, /* lookup_name */
217 fd_close_handle, /* close_handle */
218 named_pipe_device_destroy /* destroy */
221 static const struct fd_ops named_pipe_device_fd_ops =
223 default_fd_get_poll_events, /* get_poll_events */
224 default_poll_event, /* poll_event */
225 no_flush, /* flush */
226 named_pipe_device_get_file_info, /* get_file_info */
227 default_fd_queue_async, /* queue_async */
228 default_fd_cancel_async /* cancel_async */
231 static void named_pipe_dump( struct object *obj, int verbose )
233 struct named_pipe *pipe = (struct named_pipe *) obj;
234 assert( obj->ops == &named_pipe_ops );
235 fprintf( stderr, "Named pipe " );
236 dump_object_name( &pipe->obj );
237 fprintf( stderr, "\n" );
240 static unsigned int named_pipe_map_access( struct object *obj, unsigned int access )
242 if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ;
243 if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE | FILE_CREATE_PIPE_INSTANCE;
244 if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
245 if (access & GENERIC_ALL) access |= STANDARD_RIGHTS_ALL;
246 return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
249 static void pipe_server_dump( struct object *obj, int verbose )
251 struct pipe_server *server = (struct pipe_server *) obj;
252 assert( obj->ops == &pipe_server_ops );
253 fprintf( stderr, "Named pipe server pipe=%p state=%d\n", server->pipe, server->state );
256 static void pipe_client_dump( struct object *obj, int verbose )
258 struct pipe_client *client = (struct pipe_client *) obj;
259 assert( obj->ops == &pipe_client_ops );
260 fprintf( stderr, "Named pipe client server=%p\n", client->server );
263 static void named_pipe_destroy( struct object *obj)
265 struct named_pipe *pipe = (struct named_pipe *) obj;
267 assert( list_empty( &pipe->servers ) );
268 assert( !pipe->instances );
269 async_terminate_queue( &pipe->waiters, STATUS_HANDLES_CLOSED );
272 static struct fd *pipe_client_get_fd( struct object *obj )
274 struct pipe_client *client = (struct pipe_client *) obj;
276 return (struct fd *) grab_object( client->fd );
277 set_error( STATUS_PIPE_DISCONNECTED );
281 static struct fd *pipe_server_get_fd( struct object *obj )
283 struct pipe_server *server = (struct pipe_server *) obj;
285 switch(server->state)
287 case ps_connected_server:
288 case ps_wait_disconnect:
289 assert( server->fd );
290 return (struct fd *) grab_object( server->fd );
294 set_error( STATUS_PIPE_LISTENING );
297 case ps_disconnected_server:
298 case ps_wait_connect:
299 set_error( STATUS_PIPE_DISCONNECTED );
306 static void notify_empty( struct pipe_server *server )
308 if (!server->flush_poll)
310 assert( server->state == ps_connected_server );
311 assert( server->event );
312 remove_timeout_user( server->flush_poll );
313 server->flush_poll = NULL;
314 set_event( server->event );
315 release_object( server->event );
316 server->event = NULL;
319 static void do_disconnect( struct pipe_server *server )
321 /* we may only have a server fd, if the client disconnected */
324 assert( server->client->server == server );
325 assert( server->client->fd );
326 release_object( server->client->fd );
327 server->client->fd = NULL;
329 assert( server->fd );
330 release_object( server->fd );
334 static unsigned int pipe_map_access( struct object *obj, unsigned int access )
336 if (access & GENERIC_READ) access |= FILE_GENERIC_READ;
337 if (access & GENERIC_WRITE) access |= FILE_GENERIC_WRITE;
338 if (access & GENERIC_EXECUTE) access |= FILE_GENERIC_EXECUTE;
339 if (access & GENERIC_ALL) access |= FILE_ALL_ACCESS;
340 return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
343 static void pipe_server_destroy( struct object *obj)
345 struct pipe_server *server = (struct pipe_server *)obj;
347 assert( obj->ops == &pipe_server_ops );
351 notify_empty( server );
352 do_disconnect( server );
357 server->client->server = NULL;
358 server->client = NULL;
361 async_terminate_head( &server->wait_q, STATUS_HANDLES_CLOSED );
363 assert( server->pipe->instances );
364 server->pipe->instances--;
366 list_remove( &server->entry );
367 release_object( server->pipe );
370 static void pipe_client_destroy( struct object *obj)
372 struct pipe_client *client = (struct pipe_client *)obj;
373 struct pipe_server *server = client->server;
375 assert( obj->ops == &pipe_client_ops );
379 notify_empty( server );
381 switch(server->state)
383 case ps_connected_server:
384 /* Don't destroy the server's fd here as we can't
385 do a successful flush without it. */
386 server->state = ps_wait_disconnect;
387 release_object( client->fd );
390 case ps_disconnected_server:
391 server->state = ps_wait_connect;
395 case ps_wait_disconnect:
396 case ps_wait_connect:
399 assert( server->client );
400 server->client = NULL;
401 client->server = NULL;
403 assert( !client->fd );
406 static void named_pipe_device_dump( struct object *obj, int verbose )
408 assert( obj->ops == &named_pipe_device_ops );
409 fprintf( stderr, "Named pipe device\n" );
412 static struct fd *named_pipe_device_get_fd( struct object *obj )
414 struct named_pipe_device *device = (struct named_pipe_device *)obj;
415 return (struct fd *)grab_object( device->fd );
418 static struct object *named_pipe_device_lookup_name( struct object *obj, struct unicode_str *name,
421 struct named_pipe_device *device = (struct named_pipe_device*)obj;
422 struct object *found;
424 assert( obj->ops == &named_pipe_device_ops );
425 assert( device->pipes );
427 if ((found = find_object( device->pipes, name, attr | OBJ_CASE_INSENSITIVE )))
433 static void named_pipe_device_destroy( struct object *obj )
435 struct named_pipe_device *device = (struct named_pipe_device*)obj;
436 assert( obj->ops == &named_pipe_device_ops );
437 if (device->fd) release_object( device->fd );
438 free( device->pipes );
441 static enum server_fd_type named_pipe_device_get_file_info( struct fd *fd, int *flags )
444 return FD_TYPE_DEVICE;
447 void create_named_pipe_device( struct directory *root, const struct unicode_str *name )
449 struct named_pipe_device *dev;
451 if ((dev = create_named_object_dir( root, name, 0, &named_pipe_device_ops )) &&
452 get_error() != STATUS_OBJECT_NAME_EXISTS)
455 if (!(dev->fd = alloc_pseudo_fd( &named_pipe_device_fd_ops, &dev->obj )) ||
456 !(dev->pipes = create_namespace( 7 )))
458 release_object( dev );
462 if (dev) make_object_static( &dev->obj );
465 static int pipe_data_remaining( struct pipe_server *server )
470 assert( server->client );
472 fd = get_unix_fd( server->client->fd );
479 if (0 > poll( &pfd, 1, 0 ))
482 return pfd.revents&POLLIN;
485 static void check_flushed( void *arg )
487 struct pipe_server *server = (struct pipe_server*) arg;
489 assert( server->event );
490 if (pipe_data_remaining( server ))
492 struct timeval tv = current_time;
493 add_timeout( &tv, 100 );
494 server->flush_poll = add_timeout_user( &tv, check_flushed, server );
498 /* notify_empty( server ); */
499 server->flush_poll = NULL;
500 set_event( server->event );
501 release_object( server->event );
502 server->event = NULL;
506 static int pipe_server_flush( struct fd *fd, struct event **event )
508 struct pipe_server *server = get_fd_user( fd );
513 if (server->state != ps_connected_server)
516 /* FIXME: if multiple threads flush the same pipe,
517 maybe should create a list of processes to notify */
518 if (server->flush_poll)
521 if (pipe_data_remaining( server ))
523 struct timeval tv = current_time;
525 /* this kind of sux -
526 there's no unix way to be alerted when a pipe becomes empty */
527 server->event = create_event( NULL, NULL, 0, 0, 0 );
530 add_timeout( &tv, 100 );
531 server->flush_poll = add_timeout_user( &tv, check_flushed, server );
532 *event = server->event;
538 static int pipe_client_flush( struct fd *fd, struct event **event )
540 /* FIXME: what do we have to do for this? */
544 static inline int is_overlapped( unsigned int options )
546 return !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
549 static enum server_fd_type pipe_server_get_info( struct fd *fd, int *flags )
551 struct pipe_server *server = get_fd_user( fd );
553 *flags = FD_FLAG_AVAILABLE;
554 if (is_overlapped( server->options )) *flags |= FD_FLAG_OVERLAPPED;
558 static enum server_fd_type pipe_client_get_info( struct fd *fd, int *flags )
560 struct pipe_client *client = get_fd_user( fd );
562 *flags = FD_FLAG_AVAILABLE;
563 if (is_overlapped( client->flags )) *flags |= FD_FLAG_OVERLAPPED;
567 static struct named_pipe *create_named_pipe( struct directory *root, const struct unicode_str *name,
571 struct named_pipe *pipe = NULL;
572 struct unicode_str new_name;
574 if (!name || !name->len) return alloc_object( &named_pipe_ops );
576 if (!(obj = find_object_dir( root, name, attr, &new_name ))) return NULL;
579 if (attr & OBJ_OPENIF && obj->ops == &named_pipe_ops)
580 set_error( STATUS_OBJECT_NAME_EXISTS );
583 release_object( obj );
585 if (attr & OBJ_OPENIF)
586 set_error( STATUS_OBJECT_TYPE_MISMATCH );
588 set_error( STATUS_OBJECT_NAME_COLLISION );
590 return (struct named_pipe *)obj;
593 if (obj->ops != &named_pipe_device_ops)
594 set_error( STATUS_OBJECT_TYPE_MISMATCH );
597 struct named_pipe_device *dev = (struct named_pipe_device *)obj;
598 if ((pipe = create_object( dev->pipes, &named_pipe_ops, &new_name, NULL )))
602 release_object( obj );
606 static struct pipe_server *get_pipe_server_obj( struct process *process,
607 obj_handle_t handle, unsigned int access )
610 obj = get_handle_obj( process, handle, access, &pipe_server_ops );
611 return (struct pipe_server *) obj;
614 static struct pipe_server *create_pipe_server( struct named_pipe *pipe, unsigned int options )
616 struct pipe_server *server;
618 server = alloc_object( &pipe_server_ops );
624 server->state = ps_idle_server;
625 server->client = NULL;
626 server->flush_poll = NULL;
627 server->options = options;
628 list_init( &server->wait_q );
630 list_add_head( &pipe->servers, &server->entry );
636 static struct pipe_client *create_pipe_client( unsigned int flags )
638 struct pipe_client *client;
640 client = alloc_object( &pipe_client_ops );
645 client->server = NULL;
646 client->flags = flags;
651 static inline struct pipe_server *find_server( struct named_pipe *pipe, enum pipe_state state )
653 struct pipe_server *server;
655 LIST_FOR_EACH_ENTRY( server, &pipe->servers, struct pipe_server, entry )
657 if (server->state == state) return (struct pipe_server *)grab_object( server );
662 static inline struct pipe_server *find_server2( struct named_pipe *pipe,
663 enum pipe_state state1, enum pipe_state state2 )
665 struct pipe_server *server;
667 LIST_FOR_EACH_ENTRY( server, &pipe->servers, struct pipe_server, entry )
669 if (server->state == state1 || server->state == state2)
670 return (struct pipe_server *)grab_object( server );
675 DECL_HANDLER(create_named_pipe)
677 struct named_pipe *pipe;
678 struct pipe_server *server;
679 struct unicode_str name;
680 struct directory *root = NULL;
683 get_req_unicode_str( &name );
684 if (req->rootdir && !(root = get_directory_obj( current->process, req->rootdir, 0 )))
687 pipe = create_named_pipe( root, &name, req->attributes | OBJ_OPENIF );
689 if (root) release_object( root );
692 if (get_error() != STATUS_OBJECT_NAME_EXISTS)
694 /* initialize it if it didn't already exist */
696 list_init( &pipe->servers );
697 list_init( &pipe->waiters );
698 pipe->insize = req->insize;
699 pipe->outsize = req->outsize;
700 pipe->maxinstances = req->maxinstances;
701 pipe->timeout = req->timeout;
702 pipe->flags = req->flags;
706 if (pipe->maxinstances <= pipe->instances)
708 set_error( STATUS_INSTANCE_NOT_AVAILABLE );
709 release_object( pipe );
712 if ((pipe->maxinstances != req->maxinstances) ||
713 (pipe->timeout != req->timeout) ||
714 (pipe->flags != req->flags))
716 set_error( STATUS_ACCESS_DENIED );
717 release_object( pipe );
720 clear_error(); /* clear the name collision */
723 server = create_pipe_server( pipe, req->options );
726 reply->handle = alloc_handle( current->process, server, req->access, req->attributes );
727 server->pipe->instances++;
728 release_object( server );
731 release_object( pipe );
734 DECL_HANDLER(open_named_pipe)
736 struct pipe_server *server;
737 struct pipe_client *client;
738 struct unicode_str name;
739 struct directory *root = NULL;
740 struct named_pipe *pipe;
743 get_req_unicode_str( &name );
744 if (req->rootdir && !(root = get_directory_obj( current->process, req->rootdir, 0 )))
747 pipe = open_object_dir( root, &name, req->attributes, &named_pipe_ops );
749 if (root) release_object( root );
752 server = find_server2( pipe, ps_idle_server, ps_wait_open );
753 release_object( pipe );
757 set_error( STATUS_PIPE_NOT_AVAILABLE );
761 client = create_pipe_client( req->flags );
764 if (!socketpair( PF_UNIX, SOCK_STREAM, 0, fds ))
768 assert( !client->fd );
769 assert( !server->fd );
771 /* for performance reasons, only set nonblocking mode when using
772 * overlapped I/O. Otherwise, we will be doing too much busy
774 if (is_overlapped( req->flags ))
775 res = fcntl( fds[1], F_SETFL, O_NONBLOCK );
776 if ((res != -1) && is_overlapped( server->options ))
777 res = fcntl( fds[0], F_SETFL, O_NONBLOCK );
779 client->fd = create_anonymous_fd( &pipe_client_fd_ops,
780 fds[1], &client->obj );
781 server->fd = create_anonymous_fd( &pipe_server_fd_ops,
782 fds[0], &server->obj );
783 if (client->fd && server->fd && res != 1)
785 if (server->state == ps_wait_open)
786 async_terminate_head( &server->wait_q, STATUS_SUCCESS );
787 assert( list_empty( &server->wait_q ) );
788 server->state = ps_connected_server;
789 server->client = client;
790 client->server = server;
791 reply->handle = alloc_handle( current->process, client, req->access, req->attributes );
797 release_object( client );
799 release_object( server );
802 DECL_HANDLER(connect_named_pipe)
804 struct pipe_server *server;
806 server = get_pipe_server_obj(current->process, req->handle, 0);
810 switch(server->state)
813 case ps_wait_connect:
814 assert( !server->fd );
815 server->state = ps_wait_open;
816 create_async( current, NULL, &server->wait_q,
817 req->func, req->event, NULL );
818 async_terminate_queue( &server->pipe->waiters, STATUS_SUCCESS );
820 case ps_connected_server:
821 assert( server->fd );
822 set_error( STATUS_PIPE_CONNECTED );
824 case ps_disconnected_server:
825 set_error( STATUS_PIPE_BUSY );
827 case ps_wait_disconnect:
828 set_error( STATUS_NO_DATA_DETECTED );
831 set_error( STATUS_INVALID_HANDLE );
835 release_object(server);
838 DECL_HANDLER(wait_named_pipe)
840 struct named_pipe_device *device;
841 struct named_pipe *pipe;
842 struct pipe_server *server;
843 struct unicode_str name;
845 device = (struct named_pipe_device *)get_handle_obj( current->process, req->handle,
846 FILE_READ_ATTRIBUTES, &named_pipe_device_ops );
849 get_req_unicode_str( &name );
850 pipe = (struct named_pipe *)find_object( device->pipes, &name, OBJ_CASE_INSENSITIVE );
851 release_object( device );
854 set_error( STATUS_PIPE_NOT_AVAILABLE );
857 server = find_server( pipe, ps_wait_open );
860 /* there's already a server waiting for a client to connect */
861 thread_queue_apc( current, NULL, req->func, APC_ASYNC_IO,
862 1, req->event, NULL, (void *)STATUS_SUCCESS );
863 release_object( server );
867 if (req->timeout == NMPWAIT_WAIT_FOREVER)
868 create_async( current, NULL, &pipe->waiters,
869 req->func, req->event, NULL );
872 struct timeval when = current_time;
873 if (req->timeout == NMPWAIT_USE_DEFAULT_WAIT) add_timeout( &when, pipe->timeout );
874 else add_timeout( &when, req->timeout );
875 create_async( current, &when, &pipe->waiters, req->func, req->event, NULL );
879 release_object( pipe );
882 DECL_HANDLER(disconnect_named_pipe)
884 struct pipe_server *server;
886 server = get_pipe_server_obj( current->process, req->handle, 0 );
889 switch(server->state)
891 case ps_connected_server:
892 assert( server->fd );
893 assert( server->client );
894 assert( server->client->fd );
896 notify_empty( server );
898 /* Dump the client and server fds, but keep the pointers
899 around - client loses all waiting data */
900 server->state = ps_disconnected_server;
901 do_disconnect( server );
904 case ps_wait_disconnect:
905 assert( !server->client );
906 assert( server->fd );
907 do_disconnect( server );
908 server->state = ps_wait_connect;
913 case ps_disconnected_server:
914 case ps_wait_connect:
915 set_error( STATUS_PIPE_DISCONNECTED );
918 release_object( server );
921 DECL_HANDLER(get_named_pipe_info)
923 struct pipe_server *server;
924 struct pipe_client *client = NULL;
926 server = get_pipe_server_obj( current->process, req->handle, FILE_READ_ATTRIBUTES );
930 client = (struct pipe_client *)get_handle_obj( current->process, req->handle,
931 FILE_READ_ATTRIBUTES, &pipe_client_ops );
933 server = client->server;
936 reply->flags = server->pipe->flags;
937 reply->maxinstances = server->pipe->maxinstances;
938 reply->instances = server->pipe->instances;
939 reply->insize = server->pipe->insize;
940 reply->outsize = server->pipe->outsize;
943 release_object(client);
946 reply->flags |= NAMED_PIPE_SERVER_END;
947 release_object(server);