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server: Store named pipe fd in pipe_end throughout its whole life time. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2017-10-09 14:28:46 +02:00 committed by Alexandre Julliard
parent 4e17ff7c98
commit c295dd6bda
1 changed files with 14 additions and 49 deletions
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63
server/named_pipe.c
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@ -75,7 +75,6 @@ struct pipe_end
struct pipe_server
{
struct pipe_end pipe_end; /* common header for pipe_client and pipe_server */
struct fd *ioctl_fd; /* file descriptor for ioctls when not connected */
struct list entry; /* entry in named pipe servers list */
enum pipe_state state; /* server state */
struct pipe_client *client; /* client that this server is connected to */
@ -142,6 +141,7 @@ static const struct object_ops named_pipe_ops =
/* common server and client pipe end functions */
static enum server_fd_type pipe_end_get_fd_type( struct fd *fd );
static struct fd *pipe_end_get_fd( struct object *obj );
static int pipe_end_read( struct fd *fd, struct async *async, file_pos_t pos );
static int pipe_end_write( struct fd *fd, struct async *async_data, file_pos_t pos );
static int pipe_end_flush( struct fd *fd, struct async *async );
@ -150,7 +150,6 @@ static void pipe_end_reselect_async( struct fd *fd, struct async_queue *queue );
/* 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_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
@ -164,7 +163,7 @@ static const struct object_ops pipe_server_ops =
default_fd_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
pipe_server_get_fd, /* get_fd */
pipe_end_get_fd, /* get_fd */
default_fd_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
@ -193,7 +192,6 @@ static const struct fd_ops pipe_server_fd_ops =
/* client end functions */
static void pipe_client_dump( struct object *obj, int verbose );
static int pipe_client_signaled( struct object *obj, struct wait_queue_entry *entry );
static struct fd *pipe_client_get_fd( struct object *obj );
static void pipe_client_destroy( struct object *obj );
static int pipe_client_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
@ -207,7 +205,7 @@ static const struct object_ops pipe_client_ops =
pipe_client_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
pipe_client_get_fd, /* get_fd */
pipe_end_get_fd, /* get_fd */
default_fd_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
@ -324,13 +322,10 @@ static void named_pipe_destroy( struct object *obj)
free_async_queue( &pipe->waiters );
}
static struct fd *pipe_client_get_fd( struct object *obj )
static struct fd *pipe_end_get_fd( struct object *obj )
{
struct pipe_client *client = (struct pipe_client *) obj;
if (client->pipe_end.fd)
return (struct fd *) grab_object( client->pipe_end.fd );
set_error( STATUS_PIPE_DISCONNECTED );
return NULL;
struct pipe_end *pipe_end = (struct pipe_end *) obj;
return (struct fd *) grab_object( pipe_end->fd );
}
static void set_server_state( struct pipe_server *server, enum pipe_state state )
@ -341,27 +336,17 @@ static void set_server_state( struct pipe_server *server, enum pipe_state state
{
case ps_connected_server:
case ps_wait_disconnect:
assert( server->pipe_end.fd );
break;
case ps_wait_open:
case ps_idle_server:
assert( !server->pipe_end.fd );
set_no_fd_status( server->ioctl_fd, STATUS_PIPE_LISTENING );
set_no_fd_status( server->pipe_end.fd, STATUS_PIPE_LISTENING );
break;
case ps_wait_connect:
assert( !server->pipe_end.fd );
set_no_fd_status( server->ioctl_fd, STATUS_PIPE_DISCONNECTED );
set_no_fd_status( server->pipe_end.fd, STATUS_PIPE_DISCONNECTED );
break;
}
}
static struct fd *pipe_server_get_fd( struct object *obj )
{
struct pipe_server *server = (struct pipe_server *) obj;
return (struct fd *)grab_object( server->pipe_end.fd ? server->pipe_end.fd : server->ioctl_fd );
}
static void wake_message( struct pipe_message *message )
{
@ -411,19 +396,6 @@ static void pipe_end_disconnect( struct pipe_end *pipe_end, unsigned int status
}
}
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->pipe_end.fd );
}
assert( server->pipe_end.fd );
release_object( server->pipe_end.fd );
server->pipe_end.fd = NULL;
}
static void pipe_end_destroy( struct pipe_end *pipe_end )
{
struct pipe_message *message;
@ -437,6 +409,7 @@ static void pipe_end_destroy( struct pipe_end *pipe_end )
free_async_queue( &pipe_end->read_q );
free_async_queue( &pipe_end->write_q );
if (pipe_end->fd) release_object( pipe_end->fd );
}
static void pipe_server_destroy( struct object *obj)
@ -447,8 +420,6 @@ static void pipe_server_destroy( struct object *obj)
pipe_end_disconnect( &server->pipe_end, STATUS_PIPE_BROKEN );
if (server->pipe_end.fd) do_disconnect( server );
pipe_end_destroy( &server->pipe_end );
if (server->client)
{
@ -459,7 +430,6 @@ static void pipe_server_destroy( struct object *obj)
assert( server->pipe->instances );
server->pipe->instances--;
if (server->ioctl_fd) release_object( server->ioctl_fd );
list_remove( &server->entry );
release_object( server->pipe );
}
@ -494,7 +464,6 @@ static void pipe_client_destroy( struct object *obj)
}
pipe_end_destroy( &client->pipe_end );
if (client->pipe_end.fd) release_object( client->pipe_end.fd );
}
static void named_pipe_device_dump( struct object *obj, int verbose )
@ -849,7 +818,7 @@ static int pipe_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *as
{
case ps_idle_server:
case ps_wait_connect:
fd_queue_async( server->ioctl_fd, async, ASYNC_TYPE_WAIT );
fd_queue_async( server->pipe_end.fd, async, ASYNC_TYPE_WAIT );
set_server_state( server, ps_wait_open );
async_wake_up( &server->pipe->waiters, STATUS_SUCCESS );
set_error( STATUS_PENDING );
@ -871,11 +840,9 @@ static int pipe_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *as
{
case ps_connected_server:
assert( server->client );
assert( server->client->pipe_end.fd );
/* dump the client and server fds - client loses all waiting data */
pipe_end_disconnect( &server->pipe_end, STATUS_PIPE_DISCONNECTED );
do_disconnect( server );
server->client->server = NULL;
server->client = NULL;
set_server_state( server, ps_wait_connect );
@ -883,7 +850,6 @@ static int pipe_server_ioctl( struct fd *fd, ioctl_code_t code, struct async *as
case ps_wait_disconnect:
assert( !server->client );
pipe_end_disconnect( &server->pipe_end, STATUS_PIPE_DISCONNECTED );
do_disconnect( server );
set_server_state( server, ps_wait_connect );
break;
case ps_idle_server:
@ -953,12 +919,12 @@ static struct pipe_server *create_pipe_server( struct named_pipe *pipe, unsigned
list_add_head( &pipe->servers, &server->entry );
grab_object( pipe );
if (!(server->ioctl_fd = alloc_pseudo_fd( &pipe_server_fd_ops, &server->pipe_end.obj, options )))
if (!(server->pipe_end.fd = alloc_pseudo_fd( &pipe_server_fd_ops, &server->pipe_end.obj, options )))
{
release_object( server );
return NULL;
}
set_fd_signaled( server->ioctl_fd, 1 );
set_fd_signaled( server->pipe_end.fd, 1 );
set_server_state( server, ps_idle_server );
return server;
}
@ -1048,11 +1014,10 @@ static struct object *named_pipe_open_file( struct object *obj, unsigned int acc
if ((client = create_pipe_client( options, pipe->flags, pipe->outsize, options )))
{
server->pipe_end.fd = (struct fd *)grab_object( server->ioctl_fd );
set_no_fd_status( server->ioctl_fd, STATUS_BAD_DEVICE_TYPE );
set_no_fd_status( server->pipe_end.fd, STATUS_BAD_DEVICE_TYPE );
allow_fd_caching( server->pipe_end.fd );
if (server->state == ps_wait_open)
fd_async_wake_up( server->ioctl_fd, ASYNC_TYPE_WAIT, STATUS_SUCCESS );
fd_async_wake_up( server->pipe_end.fd, ASYNC_TYPE_WAIT, STATUS_SUCCESS );
set_server_state( server, ps_connected_server );
server->client = client;
client->server = server;