mirror of
git://source.winehq.org/git/wine.git
synced 2024-10-31 10:41:12 +00:00
802 lines
21 KiB
C
802 lines
21 KiB
C
/*
|
|
* Server-side pipe management
|
|
*
|
|
* Copyright (C) 1998 Alexandre Julliard
|
|
* Copyright (C) 2001 Mike McCormack
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* TODO:
|
|
* message mode
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <assert.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
|
|
#include "file.h"
|
|
#include "handle.h"
|
|
#include "thread.h"
|
|
#include "request.h"
|
|
|
|
enum pipe_state
|
|
{
|
|
ps_none,
|
|
ps_idle_server,
|
|
ps_wait_open,
|
|
ps_connected_server,
|
|
ps_wait_disconnect,
|
|
ps_disconnected_server,
|
|
ps_wait_connect
|
|
};
|
|
|
|
struct wait_info
|
|
{
|
|
struct thread *thread;
|
|
void *func;
|
|
void *overlapped;
|
|
};
|
|
|
|
struct named_pipe;
|
|
|
|
struct pipe_server
|
|
{
|
|
struct object obj;
|
|
struct fd *fd;
|
|
enum pipe_state state;
|
|
struct pipe_client *client;
|
|
struct named_pipe *pipe;
|
|
struct pipe_server *next;
|
|
struct pipe_server *prev;
|
|
struct timeout_user *flush_poll;
|
|
struct event *event;
|
|
struct wait_info wait;
|
|
};
|
|
|
|
struct pipe_client
|
|
{
|
|
struct object obj;
|
|
struct fd *fd;
|
|
struct pipe_server *server;
|
|
struct wait_info wait;
|
|
};
|
|
|
|
struct connect_wait
|
|
{
|
|
struct wait_info wait;
|
|
struct connect_wait *next;
|
|
};
|
|
|
|
struct named_pipe
|
|
{
|
|
struct object obj; /* object header */
|
|
unsigned int pipemode;
|
|
unsigned int maxinstances;
|
|
unsigned int outsize;
|
|
unsigned int insize;
|
|
unsigned int timeout;
|
|
unsigned int instances;
|
|
struct pipe_server *servers;
|
|
struct connect_wait *connect_waiters;
|
|
};
|
|
|
|
static void named_pipe_dump( struct object *obj, int verbose );
|
|
static void named_pipe_destroy( struct object *obj );
|
|
|
|
static const struct object_ops named_pipe_ops =
|
|
{
|
|
sizeof(struct named_pipe), /* size */
|
|
named_pipe_dump, /* dump */
|
|
no_add_queue, /* add_queue */
|
|
NULL, /* remove_queue */
|
|
NULL, /* signaled */
|
|
NULL, /* satisfied */
|
|
no_get_fd, /* get_fd */
|
|
named_pipe_destroy /* destroy */
|
|
};
|
|
|
|
/* common to clients and servers */
|
|
static int pipe_end_get_poll_events( struct fd *fd );
|
|
static int pipe_end_get_info( struct fd *fd, int *flags );
|
|
|
|
/* server end functions */
|
|
static void pipe_server_dump( struct object *obj, int verbose );
|
|
static struct fd *pipe_server_get_fd( struct object *obj );
|
|
static void pipe_server_destroy( struct object *obj);
|
|
static int pipe_server_flush( struct fd *fd, struct event **event );
|
|
|
|
static const struct object_ops pipe_server_ops =
|
|
{
|
|
sizeof(struct pipe_server), /* size */
|
|
pipe_server_dump, /* dump */
|
|
default_fd_add_queue, /* add_queue */
|
|
default_fd_remove_queue, /* remove_queue */
|
|
default_fd_signaled, /* signaled */
|
|
no_satisfied, /* satisfied */
|
|
pipe_server_get_fd, /* get_fd */
|
|
pipe_server_destroy /* destroy */
|
|
};
|
|
|
|
static const struct fd_ops pipe_server_fd_ops =
|
|
{
|
|
pipe_end_get_poll_events, /* get_poll_events */
|
|
default_poll_event, /* poll_event */
|
|
pipe_server_flush, /* flush */
|
|
pipe_end_get_info, /* get_file_info */
|
|
no_queue_async /* queue_async */
|
|
};
|
|
|
|
/* client end functions */
|
|
static void pipe_client_dump( struct object *obj, int verbose );
|
|
static struct fd *pipe_client_get_fd( struct object *obj );
|
|
static void pipe_client_destroy( struct object *obj );
|
|
static int pipe_client_flush( struct fd *fd, struct event **event );
|
|
|
|
static const struct object_ops pipe_client_ops =
|
|
{
|
|
sizeof(struct pipe_client), /* size */
|
|
pipe_client_dump, /* dump */
|
|
default_fd_add_queue, /* add_queue */
|
|
default_fd_remove_queue, /* remove_queue */
|
|
default_fd_signaled, /* signaled */
|
|
no_satisfied, /* satisfied */
|
|
pipe_client_get_fd, /* get_fd */
|
|
pipe_client_destroy /* destroy */
|
|
};
|
|
|
|
static const struct fd_ops pipe_client_fd_ops =
|
|
{
|
|
pipe_end_get_poll_events, /* get_poll_events */
|
|
default_poll_event, /* poll_event */
|
|
pipe_client_flush, /* flush */
|
|
pipe_end_get_info, /* get_file_info */
|
|
no_queue_async /* queue_async */
|
|
};
|
|
|
|
static void named_pipe_dump( struct object *obj, int verbose )
|
|
{
|
|
struct named_pipe *pipe = (struct named_pipe *) obj;
|
|
assert( obj->ops == &named_pipe_ops );
|
|
fprintf( stderr, "named pipe %p\n" ,pipe);
|
|
}
|
|
|
|
static void pipe_server_dump( struct object *obj, int verbose )
|
|
{
|
|
struct pipe_server *server = (struct pipe_server *) obj;
|
|
assert( obj->ops == &pipe_server_ops );
|
|
fprintf( stderr, "named pipe server %p (state %d)\n",
|
|
server, server->state );
|
|
}
|
|
|
|
static void pipe_client_dump( struct object *obj, int verbose )
|
|
{
|
|
struct pipe_client *client = (struct pipe_client *) obj;
|
|
assert( obj->ops == &pipe_server_ops );
|
|
fprintf( stderr, "named pipe client %p (server state %d)\n",
|
|
client, client->server->state );
|
|
}
|
|
|
|
static void named_pipe_destroy( struct object *obj)
|
|
{
|
|
struct named_pipe *pipe = (struct named_pipe *) obj;
|
|
assert( !pipe->servers );
|
|
assert( !pipe->instances );
|
|
}
|
|
|
|
static void notify_waiter( struct wait_info *wait, unsigned int status )
|
|
{
|
|
if( wait->thread && wait->func && wait->overlapped )
|
|
{
|
|
/* queue a system APC, to notify a waiting thread */
|
|
thread_queue_apc( wait->thread, NULL, wait->func, APC_ASYNC,
|
|
1, wait->overlapped, (void *)status, NULL );
|
|
}
|
|
if( wait->thread ) release_object( wait->thread );
|
|
wait->thread = NULL;
|
|
}
|
|
|
|
static void set_waiter( struct wait_info *wait, void *func, void *ov )
|
|
{
|
|
wait->thread = (struct thread *) grab_object( current );
|
|
wait->func = func;
|
|
wait->overlapped = ov;
|
|
}
|
|
|
|
static void notify_connect_waiters( struct named_pipe *pipe )
|
|
{
|
|
struct connect_wait *cw, **x = &pipe->connect_waiters;
|
|
|
|
while( *x )
|
|
{
|
|
cw = *x;
|
|
notify_waiter( &cw->wait, STATUS_SUCCESS );
|
|
release_object( pipe );
|
|
*x = cw->next;
|
|
free( cw );
|
|
}
|
|
}
|
|
|
|
static void queue_connect_waiter( struct named_pipe *pipe,
|
|
void *func, void *overlapped )
|
|
{
|
|
struct connect_wait *waiter;
|
|
|
|
waiter = mem_alloc( sizeof(*waiter) );
|
|
if( waiter )
|
|
{
|
|
set_waiter( &waiter->wait, func, overlapped );
|
|
waiter->next = pipe->connect_waiters;
|
|
pipe->connect_waiters = waiter;
|
|
grab_object( pipe );
|
|
}
|
|
}
|
|
|
|
static struct fd *pipe_client_get_fd( struct object *obj )
|
|
{
|
|
struct pipe_client *client = (struct pipe_client *) obj;
|
|
if( client->fd )
|
|
return (struct fd *) grab_object( client->fd );
|
|
set_error( STATUS_PIPE_DISCONNECTED );
|
|
return NULL;
|
|
}
|
|
|
|
static struct fd *pipe_server_get_fd( struct object *obj )
|
|
{
|
|
struct pipe_server *server = (struct pipe_server *) obj;
|
|
|
|
switch(server->state)
|
|
{
|
|
case ps_connected_server:
|
|
case ps_wait_disconnect:
|
|
assert( server->fd );
|
|
return (struct fd *) grab_object( server->fd );
|
|
|
|
case ps_wait_open:
|
|
case ps_idle_server:
|
|
set_error( STATUS_PIPE_LISTENING );
|
|
break;
|
|
|
|
case ps_disconnected_server:
|
|
case ps_wait_connect:
|
|
set_error( STATUS_PIPE_DISCONNECTED );
|
|
break;
|
|
|
|
default:
|
|
assert( 0 );
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static void notify_empty( struct pipe_server *server )
|
|
{
|
|
if( !server->flush_poll )
|
|
return;
|
|
assert( server->state == ps_connected_server );
|
|
assert( server->event );
|
|
remove_timeout_user( server->flush_poll );
|
|
server->flush_poll = NULL;
|
|
set_event( server->event );
|
|
release_object( server->event );
|
|
server->event = NULL;
|
|
}
|
|
|
|
static void do_disconnect( struct pipe_server *server )
|
|
{
|
|
/* we may only have a server fd, if the client disconnected */
|
|
if( server->client )
|
|
{
|
|
assert( server->client->server == server );
|
|
assert( server->client->fd );
|
|
release_object( server->client->fd );
|
|
server->client->fd = NULL;
|
|
}
|
|
assert( server->fd );
|
|
release_object( server->fd );
|
|
server->fd = NULL;
|
|
}
|
|
|
|
static void pipe_server_destroy( struct object *obj)
|
|
{
|
|
struct pipe_server *server = (struct pipe_server *)obj;
|
|
|
|
assert( obj->ops == &pipe_server_ops );
|
|
|
|
if( server->fd )
|
|
{
|
|
notify_empty( server );
|
|
do_disconnect( server );
|
|
}
|
|
|
|
if( server->client )
|
|
{
|
|
server->client->server = NULL;
|
|
server->client = NULL;
|
|
}
|
|
|
|
notify_waiter( &server->wait, STATUS_HANDLES_CLOSED );
|
|
|
|
assert( server->pipe->instances );
|
|
server->pipe->instances--;
|
|
|
|
/* remove server from pipe's server list */
|
|
if( server->next ) server->next->prev = server->prev;
|
|
if( server->prev ) server->prev->next = server->next;
|
|
else server->pipe->servers = server->next;
|
|
release_object( server->pipe );
|
|
}
|
|
|
|
static void pipe_client_destroy( struct object *obj)
|
|
{
|
|
struct pipe_client *client = (struct pipe_client *)obj;
|
|
struct pipe_server *server = client->server;
|
|
|
|
assert( obj->ops == &pipe_client_ops );
|
|
|
|
notify_waiter( &client->wait, STATUS_HANDLES_CLOSED );
|
|
|
|
if( server )
|
|
{
|
|
notify_empty( server );
|
|
|
|
switch( server->state )
|
|
{
|
|
case ps_connected_server:
|
|
/* Don't destroy the server's fd here as we can't
|
|
do a successful flush without it. */
|
|
server->state = ps_wait_disconnect;
|
|
release_object( client->fd );
|
|
client->fd = NULL;
|
|
break;
|
|
case ps_disconnected_server:
|
|
server->state = ps_wait_connect;
|
|
break;
|
|
default:
|
|
assert( 0 );
|
|
}
|
|
assert( server->client );
|
|
server->client = NULL;
|
|
client->server = NULL;
|
|
}
|
|
assert( !client->fd );
|
|
}
|
|
|
|
static int pipe_end_get_poll_events( struct fd *fd )
|
|
{
|
|
return POLLIN | POLLOUT; /* FIXME */
|
|
}
|
|
|
|
static int pipe_data_remaining( struct pipe_server *server )
|
|
{
|
|
struct pollfd pfd;
|
|
int fd;
|
|
|
|
assert( server->client );
|
|
|
|
fd = get_unix_fd( server->client->fd );
|
|
if( fd < 0 )
|
|
return 0;
|
|
pfd.fd = fd;
|
|
pfd.events = POLLIN;
|
|
pfd.revents = 0;
|
|
|
|
if( 0 > poll( &pfd, 1, 0 ) )
|
|
return 0;
|
|
|
|
return pfd.revents&POLLIN;
|
|
}
|
|
|
|
static void check_flushed( void *arg )
|
|
{
|
|
struct pipe_server *server = (struct pipe_server*) arg;
|
|
|
|
assert( server->event );
|
|
if( pipe_data_remaining( server ) )
|
|
{
|
|
struct timeval tv;
|
|
|
|
gettimeofday( &tv, 0 );
|
|
add_timeout( &tv, 100 );
|
|
server->flush_poll = add_timeout_user( &tv, check_flushed, server );
|
|
}
|
|
else
|
|
{
|
|
/* notify_empty( server ); */
|
|
server->flush_poll = NULL;
|
|
set_event( server->event );
|
|
release_object( server->event );
|
|
server->event = NULL;
|
|
}
|
|
}
|
|
|
|
static int pipe_server_flush( struct fd *fd, struct event **event )
|
|
{
|
|
struct pipe_server *server = get_fd_user( fd );
|
|
|
|
if( !server )
|
|
return 0;
|
|
|
|
if( server->state != ps_connected_server )
|
|
return 0;
|
|
|
|
/* FIXME: if multiple threads flush the same pipe,
|
|
maybe should create a list of processes to notify */
|
|
if( server->flush_poll )
|
|
return 0;
|
|
|
|
if( pipe_data_remaining( server ) )
|
|
{
|
|
struct timeval tv;
|
|
|
|
/* this kind of sux -
|
|
there's no unix way to be alerted when a pipe becomes empty */
|
|
server->event = create_event( NULL, 0, 0, 0 );
|
|
if( !server->event )
|
|
return 0;
|
|
gettimeofday( &tv, 0 );
|
|
add_timeout( &tv, 100 );
|
|
server->flush_poll = add_timeout_user( &tv, check_flushed, server );
|
|
*event = server->event;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pipe_client_flush( struct fd *fd, struct event **event )
|
|
{
|
|
/* FIXME: what do we have to do for this? */
|
|
return 0;
|
|
}
|
|
|
|
static int pipe_end_get_info( struct fd *fd, int *flags )
|
|
{
|
|
*flags = 0;
|
|
return FD_TYPE_DEFAULT;
|
|
}
|
|
|
|
static struct named_pipe *create_named_pipe( const WCHAR *name, size_t len )
|
|
{
|
|
struct named_pipe *pipe;
|
|
|
|
pipe = create_named_object( sync_namespace, &named_pipe_ops, name, len );
|
|
if( pipe )
|
|
{
|
|
if( get_error() != STATUS_OBJECT_NAME_COLLISION )
|
|
{
|
|
/* initialize it if it didn't already exist */
|
|
pipe->servers = 0;
|
|
pipe->instances = 0;
|
|
pipe->connect_waiters = NULL;
|
|
}
|
|
}
|
|
return pipe;
|
|
}
|
|
|
|
static struct named_pipe *open_named_pipe( const WCHAR *name, size_t len )
|
|
{
|
|
struct object *obj;
|
|
|
|
if ((obj = find_object( sync_namespace, name, len )))
|
|
{
|
|
if (obj->ops == &named_pipe_ops) return (struct named_pipe *)obj;
|
|
release_object( obj );
|
|
set_error( STATUS_OBJECT_TYPE_MISMATCH );
|
|
}
|
|
else set_error( STATUS_OBJECT_NAME_NOT_FOUND );
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct pipe_server *get_pipe_server_obj( struct process *process,
|
|
obj_handle_t handle, unsigned int access )
|
|
{
|
|
struct object *obj;
|
|
obj = get_handle_obj( process, handle, access, &pipe_server_ops );
|
|
return (struct pipe_server *) obj;
|
|
}
|
|
|
|
static struct pipe_server *create_pipe_server( struct named_pipe *pipe )
|
|
{
|
|
struct pipe_server *server;
|
|
|
|
server = alloc_object( &pipe_server_ops );
|
|
if( !server )
|
|
return NULL;
|
|
|
|
server->fd = NULL;
|
|
server->pipe = pipe;
|
|
server->state = ps_none;
|
|
server->client = NULL;
|
|
server->flush_poll = NULL;
|
|
server->wait.thread = NULL;
|
|
|
|
/* add to list of pipe servers */
|
|
if ((server->next = pipe->servers)) server->next->prev = server;
|
|
server->prev = NULL;
|
|
pipe->servers = server;
|
|
|
|
grab_object( pipe );
|
|
|
|
return server;
|
|
}
|
|
|
|
static struct pipe_client *create_pipe_client( struct pipe_server *server )
|
|
{
|
|
struct pipe_client *client;
|
|
|
|
client = alloc_object( &pipe_client_ops );
|
|
if( !client )
|
|
return NULL;
|
|
|
|
client->fd = NULL;
|
|
client->server = server;
|
|
client->wait.thread = NULL;
|
|
|
|
return client;
|
|
}
|
|
|
|
static struct pipe_server *find_server( struct named_pipe *pipe,
|
|
enum pipe_state state )
|
|
{
|
|
struct pipe_server *x;
|
|
|
|
for( x = pipe->servers; x; x = x->next )
|
|
if( x->state == state )
|
|
break;
|
|
|
|
if( !x )
|
|
return NULL;
|
|
|
|
return (struct pipe_server *) grab_object( x );
|
|
}
|
|
|
|
DECL_HANDLER(create_named_pipe)
|
|
{
|
|
struct named_pipe *pipe;
|
|
struct pipe_server *server;
|
|
|
|
reply->handle = 0;
|
|
pipe = create_named_pipe( get_req_data(), get_req_data_size() );
|
|
if( !pipe )
|
|
return;
|
|
|
|
if( get_error() != STATUS_OBJECT_NAME_COLLISION )
|
|
{
|
|
pipe->insize = req->insize;
|
|
pipe->outsize = req->outsize;
|
|
pipe->maxinstances = req->maxinstances;
|
|
pipe->timeout = req->timeout;
|
|
pipe->pipemode = req->pipemode;
|
|
}
|
|
else
|
|
{
|
|
set_error( 0 ); /* clear the name collision */
|
|
if( pipe->maxinstances <= pipe->instances )
|
|
{
|
|
set_error( STATUS_PIPE_BUSY );
|
|
release_object( pipe );
|
|
return;
|
|
}
|
|
if( ( pipe->maxinstances != req->maxinstances ) ||
|
|
( pipe->timeout != req->timeout ) ||
|
|
( pipe->pipemode != req->pipemode ) )
|
|
{
|
|
set_error( STATUS_ACCESS_DENIED );
|
|
release_object( pipe );
|
|
return;
|
|
}
|
|
}
|
|
|
|
server = create_pipe_server( pipe );
|
|
if(server)
|
|
{
|
|
server->state = ps_idle_server;
|
|
reply->handle = alloc_handle( current->process, server,
|
|
GENERIC_READ|GENERIC_WRITE, req->inherit );
|
|
server->pipe->instances++;
|
|
release_object( server );
|
|
}
|
|
|
|
release_object( pipe );
|
|
}
|
|
|
|
DECL_HANDLER(open_named_pipe)
|
|
{
|
|
struct pipe_server *server;
|
|
struct pipe_client *client;
|
|
struct named_pipe *pipe;
|
|
int fds[2];
|
|
|
|
reply->handle = 0;
|
|
|
|
pipe = open_named_pipe( get_req_data(), get_req_data_size() );
|
|
if ( !pipe )
|
|
{
|
|
set_error( STATUS_NO_SUCH_FILE );
|
|
return;
|
|
}
|
|
|
|
for( server = pipe->servers; server; server = server->next )
|
|
if( ( server->state==ps_idle_server ) ||
|
|
( server->state==ps_wait_open ) )
|
|
break;
|
|
release_object( pipe );
|
|
|
|
if ( !server )
|
|
{
|
|
set_error( STATUS_PIPE_NOT_AVAILABLE );
|
|
return;
|
|
}
|
|
|
|
client = create_pipe_client( server );
|
|
if( client )
|
|
{
|
|
if( !socketpair( PF_UNIX, SOCK_STREAM, 0, fds ) )
|
|
{
|
|
assert( !client->fd );
|
|
assert( !server->fd );
|
|
client->fd = create_anonymous_fd( &pipe_server_fd_ops,
|
|
fds[1], &client->obj );
|
|
server->fd = create_anonymous_fd( &pipe_server_fd_ops,
|
|
fds[0], &server->obj );
|
|
if (client->fd && server->fd)
|
|
{
|
|
if( server->state == ps_wait_open )
|
|
notify_waiter( &server->wait, STATUS_SUCCESS );
|
|
assert( !server->wait.thread );
|
|
server->state = ps_connected_server;
|
|
server->client = client;
|
|
client->server = server;
|
|
reply->handle = alloc_handle( current->process, client,
|
|
req->access, req->inherit );
|
|
}
|
|
}
|
|
else
|
|
file_set_error();
|
|
|
|
release_object( client );
|
|
}
|
|
}
|
|
|
|
DECL_HANDLER(connect_named_pipe)
|
|
{
|
|
struct pipe_server *server;
|
|
|
|
server = get_pipe_server_obj(current->process, req->handle, 0);
|
|
if(!server)
|
|
return;
|
|
|
|
switch( server->state )
|
|
{
|
|
case ps_idle_server:
|
|
case ps_wait_connect:
|
|
assert( !server->fd );
|
|
server->state = ps_wait_open;
|
|
set_waiter( &server->wait, req->func, req->overlapped );
|
|
notify_connect_waiters( server->pipe );
|
|
break;
|
|
case ps_connected_server:
|
|
assert( server->fd );
|
|
set_error( STATUS_PIPE_CONNECTED );
|
|
break;
|
|
case ps_disconnected_server:
|
|
set_error( STATUS_PIPE_BUSY );
|
|
break;
|
|
case ps_wait_disconnect:
|
|
set_error( STATUS_NO_DATA_DETECTED );
|
|
break;
|
|
default:
|
|
set_error( STATUS_INVALID_HANDLE );
|
|
break;
|
|
}
|
|
|
|
release_object(server);
|
|
}
|
|
|
|
DECL_HANDLER(wait_named_pipe)
|
|
{
|
|
struct named_pipe *pipe;
|
|
struct pipe_server *server;
|
|
|
|
if (!(pipe = open_named_pipe( get_req_data(), get_req_data_size() )))
|
|
{
|
|
set_error( STATUS_PIPE_NOT_AVAILABLE );
|
|
return;
|
|
}
|
|
server = find_server( pipe, ps_wait_open );
|
|
if( server )
|
|
{
|
|
/* there's already a server waiting for a client to connect */
|
|
struct wait_info wait;
|
|
set_waiter( &wait, req->func, req->overlapped );
|
|
notify_waiter( &wait, STATUS_SUCCESS );
|
|
release_object( server );
|
|
}
|
|
else
|
|
queue_connect_waiter( pipe, req->func, req->overlapped );
|
|
|
|
release_object( pipe );
|
|
}
|
|
|
|
DECL_HANDLER(disconnect_named_pipe)
|
|
{
|
|
struct pipe_server *server;
|
|
|
|
reply->fd = -1;
|
|
server = get_pipe_server_obj( current->process, req->handle, 0 );
|
|
if( !server )
|
|
return;
|
|
switch( server->state )
|
|
{
|
|
case ps_connected_server:
|
|
assert( server->fd );
|
|
assert( server->client );
|
|
assert( server->client->fd );
|
|
|
|
notify_empty( server );
|
|
notify_waiter( &server->client->wait, STATUS_PIPE_DISCONNECTED );
|
|
|
|
/* Dump the client and server fds, but keep the pointers
|
|
around - client loses all waiting data */
|
|
server->state = ps_disconnected_server;
|
|
do_disconnect( server );
|
|
reply->fd = flush_cached_fd( current->process, req->handle );
|
|
break;
|
|
|
|
case ps_wait_disconnect:
|
|
assert( !server->client );
|
|
assert( server->fd );
|
|
do_disconnect( server );
|
|
server->state = ps_wait_connect;
|
|
reply->fd = flush_cached_fd( current->process, req->handle );
|
|
break;
|
|
|
|
default:
|
|
set_error( STATUS_PIPE_DISCONNECTED );
|
|
}
|
|
release_object( server );
|
|
}
|
|
|
|
DECL_HANDLER(get_named_pipe_info)
|
|
{
|
|
struct pipe_server *server;
|
|
|
|
server = get_pipe_server_obj( current->process, req->handle, 0 );
|
|
if(!server)
|
|
return;
|
|
|
|
reply->flags = server->pipe->pipemode;
|
|
reply->maxinstances = server->pipe->maxinstances;
|
|
reply->insize = server->pipe->insize;
|
|
reply->outsize = server->pipe->outsize;
|
|
|
|
release_object(server);
|
|
}
|