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- rewrite of the named pipe code

Browse source 
- allow NtFileFlushBuffers to wait
- allow DisconnectNamedPipe to invalidate client cached fd
- fix the pipe test now that one extra test passes
This commit is contained in:
Mike McCormack 2003-05-15 04:22:45 +00:00 committed by Alexandre Julliard
parent 35d5d06ac9
commit ef8b94622a
12 changed files with 587 additions and 223 deletions
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1
dlls/kernel/sync.c
View file

@ -754,6 +754,7 @@ BOOL WINAPI DisconnectNamedPipe(HANDLE hPipe)
{
req->handle = hPipe;
ret = !wine_server_call_err( req );
if (ret && reply->fd != -1) close( reply->fd );
}
SERVER_END_REQ;

3
dlls/kernel/tests/pipe.c
View file

@ -90,10 +90,7 @@ void test_CreateNamedPipeA(void)
hFile = CreateFileA(PIPENAME, GENERIC_READ|GENERIC_WRITE, 0,
NULL, OPEN_EXISTING, 0, 0);
todo_wine
{
ok(hFile != INVALID_HANDLE_VALUE, "CreateFile failed");
}
/* don't try to do i/o if one side couldn't be opened, as it hangs */
if (hFile != INVALID_HANDLE_VALUE) {

8
dlls/ntdll/file.c
View file

@ -498,11 +498,19 @@ NTSTATUS WINAPI NtQueryVolumeInformationFile (
NTSTATUS WINAPI NtFlushBuffersFile( HANDLE hFile, IO_STATUS_BLOCK* IoStatusBlock )
{
NTSTATUS ret;
HANDLE hEvent = NULL;
SERVER_START_REQ( flush_file )
{
req->handle = hFile;
ret = wine_server_call( req );
hEvent = reply->event;
}
SERVER_END_REQ;
if( !ret && hEvent )
{
ret = NtWaitForSingleObject( hEvent, FALSE, NULL );
NtClose( hEvent );
}
return ret;
}

4
include/wine/server_protocol.h
View file

@ -876,6 +876,7 @@ struct flush_file_request
struct flush_file_reply
{
struct reply_header __header;
obj_handle_t event;
};
@ -2464,6 +2465,7 @@ struct disconnect_named_pipe_request
struct disconnect_named_pipe_reply
{
struct reply_header __header;
int fd;
};
@ -3581,6 +3583,6 @@ union generic_reply
struct get_next_hook_reply get_next_hook_reply;
};
#define SERVER_PROTOCOL_VERSION 105
#define SERVER_PROTOCOL_VERSION 106
#endif /* __WINE_WINE_SERVER_PROTOCOL_H */

9
server/fd.c
View file

@ -963,7 +963,7 @@ void default_poll_event( struct fd *fd, int event )
}
/* default flush() routine */
int no_flush( struct fd *fd )
int no_flush( struct fd *fd, struct event **event )
{
set_error( STATUS_OBJECT_TYPE_MISMATCH );
return 0;
@ -1002,10 +1002,15 @@ static struct fd *get_handle_fd_obj( struct process *process, obj_handle_t handl
DECL_HANDLER(flush_file)
{
struct fd *fd = get_handle_fd_obj( current->process, req->handle, 0 );
struct event * event = NULL;
if (fd)
{
fd->fd_ops->flush( fd );
fd->fd_ops->flush( fd, &event );
if( event )
{
reply->event = alloc_handle( current->process, event, SYNCHRONIZE, 0 );
}
release_object( fd );
}
}

4
server/file.c
View file

@ -72,7 +72,7 @@ static void file_destroy( struct object *obj );
static int file_get_poll_events( struct fd *fd );
static void file_poll_event( struct fd *fd, int event );
static int file_flush( struct fd *fd );
static int file_flush( struct fd *fd, struct event **event );
static int file_get_info( struct fd *fd, struct get_file_info_reply *reply, int *flags );
static void file_queue_async( struct fd *fd, void *ptr, unsigned int status, int type, int count );
@ -301,7 +301,7 @@ static void file_poll_event( struct fd *fd, int event )
}
static int file_flush( struct fd *fd )
static int file_flush( struct fd *fd, struct event **event )
{
int ret = (fsync( get_unix_fd(fd) ) != -1);
if (!ret) file_set_error();

5
server/file.h
View file

@ -35,7 +35,7 @@ struct fd_ops
/* a poll() event occured */
void (*poll_event)(struct fd *,int event);
/* flush the object buffers */
int (*flush)(struct fd *);
int (*flush)(struct fd *, struct event **);
/* get file information */
int (*get_file_info)(struct fd *,struct get_file_info_reply *, int *flags);
/* queue an async operation - see register_async handler in async.c*/
@ -55,12 +55,13 @@ extern int check_fd_events( struct fd *fd, int events );
extern void set_fd_events( struct fd *fd, int events );
extern obj_handle_t lock_fd( struct fd *fd, file_pos_t offset, file_pos_t count, int shared, int wait );
extern void unlock_fd( struct fd *fd, file_pos_t offset, file_pos_t count );
extern int flush_cached_fd( struct process *process, obj_handle_t handle );
extern int default_fd_add_queue( struct object *obj, struct wait_queue_entry *entry );
extern void default_fd_remove_queue( struct object *obj, struct wait_queue_entry *entry );
extern int default_fd_signaled( struct object *obj, struct thread *thread );
extern void default_poll_event( struct fd *fd, int event );
extern int no_flush( struct fd *fd );
extern int no_flush( struct fd *fd, struct event **event );
extern int no_get_file_info( struct fd *fd, struct get_file_info_reply *info, int *flags );
extern void no_queue_async( struct fd *fd, void* ptr, unsigned int status, int type, int count );
extern void main_loop(void);

14
server/handle.c
View file

@ -397,6 +397,20 @@ int get_handle_unix_fd( struct process *process, obj_handle_t handle, unsigned i
return entry->fd;
}
/* remove the cached fd and return it */
int flush_cached_fd( struct process *process, obj_handle_t handle )
{
struct handle_entry *entry = get_handle( process, handle );
int fd = -1;
if (entry)
{
fd = entry->fd;
entry->fd = -1;
}
return fd;
}
/* find the first inherited handle of the given type */
/* this is needed for window stations and desktops (don't ask...) */
obj_handle_t find_inherited_handle( struct process *process, const struct object_ops *ops )

724
server/named_pipe.c
View file

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* TODO:
* improve error handling
* message mode
*/
#include "config.h"
@ -50,26 +50,47 @@ enum pipe_state
ps_none,
ps_idle_server,
ps_wait_open,
ps_wait_connect,
ps_connected_server,
ps_connected_client,
ps_disconnected
ps_wait_disconnect,
ps_disconnected_server,
ps_wait_connect
};
struct wait_info
{
struct thread *thread;
void *func;
void *overlapped;
};
struct named_pipe;
struct pipe_user
struct pipe_server
{
struct object obj;
struct fd *fd;
enum pipe_state state;
struct pipe_user *other;
struct pipe_client *client;
struct named_pipe *pipe;
struct pipe_user *next;
struct pipe_user *prev;
struct thread *thread;
void *func;
void *overlapped;
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
@ -80,11 +101,13 @@ struct named_pipe
unsigned int outsize;
unsigned int insize;
unsigned int timeout;
struct pipe_user *users;
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 void named_pipe_destroy( struct object *obj );
static const struct object_ops named_pipe_ops =
{
@ -98,120 +121,356 @@ static const struct object_ops named_pipe_ops =
named_pipe_destroy /* destroy */
};
static void pipe_user_dump( struct object *obj, int verbose );
static struct fd *pipe_user_get_fd( struct object *obj );
static void pipe_user_destroy( struct object *obj);
/* common to clients and servers */
static int pipe_end_get_poll_events( struct fd *fd );
static int pipe_end_get_info( struct fd *fd,
struct get_file_info_reply *reply, int *flags );
static int pipe_user_get_poll_events( struct fd *fd );
static int pipe_user_get_info( struct fd *fd, struct get_file_info_reply *reply, 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_user_ops =
static const struct object_ops pipe_server_ops =
{
sizeof(struct pipe_user), /* size */
pipe_user_dump, /* dump */
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_user_get_fd, /* get_fd */
pipe_user_destroy /* destroy */
pipe_server_get_fd, /* get_fd */
pipe_server_destroy /* destroy */
};
static const struct fd_ops pipe_user_fd_ops =
static const struct fd_ops pipe_server_fd_ops =
{
pipe_user_get_poll_events, /* get_poll_events */
pipe_end_get_poll_events, /* get_poll_events */
default_poll_event, /* poll_event */
no_flush, /* flush */
pipe_user_get_info, /* get_file_info */
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;
struct named_pipe *pipe = (struct named_pipe *) obj;
assert( obj->ops == &named_pipe_ops );
fprintf( stderr, "named pipe %p\n" ,pipe);
}
static void pipe_user_dump( struct object *obj, int verbose )
static void pipe_server_dump( struct object *obj, int verbose )
{
struct pipe_user *user = (struct pipe_user *)obj;
assert( obj->ops == &pipe_user_ops );
fprintf( stderr, "named pipe user %p (state %d)\n", user, user->state );
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->users );
struct named_pipe *pipe = (struct named_pipe *) obj;
assert( !pipe->servers );
assert( !pipe->instances );
}
static void notify_waiter( struct pipe_user *user, unsigned int status)
static void notify_waiter( struct wait_info *wait, unsigned int status )
{
if(user->thread && user->func && user->overlapped)
if( wait->thread && wait->func && wait->overlapped )
{
/* queue a system APC, to notify a waiting thread */
thread_queue_apc(user->thread, NULL, user->func, APC_ASYNC, 1,
user->overlapped, (void *)status, NULL);
thread_queue_apc( wait->thread, NULL, wait->func, APC_ASYNC,
1, wait->overlapped, (void *)status, NULL );
}
if (user->thread) release_object(user->thread);
user->thread = NULL;
user->func = NULL;
user->overlapped=NULL;
if( wait->thread ) release_object( wait->thread );
wait->thread = NULL;
}
static struct fd *pipe_user_get_fd( struct object *obj )
static void set_waiter( struct wait_info *wait, void *func, void *ov )
{
struct pipe_user *user = (struct pipe_user *)obj;
if (user->fd) return (struct fd *)grab_object( user->fd );
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 void pipe_user_destroy( struct object *obj)
static struct fd *pipe_server_get_fd( struct object *obj )
{
struct pipe_user *user = (struct pipe_user *)obj;
struct pipe_server *server = (struct pipe_server *) obj;
assert( obj->ops == &pipe_user_ops );
if(user->overlapped)
notify_waiter(user,STATUS_HANDLES_CLOSED);
if(user->other)
{
release_object( user->other->fd );
user->other->fd = NULL;
switch(user->other->state)
switch(server->state)
{
case ps_connected_server:
user->other->state = ps_idle_server;
break;
case ps_connected_client:
user->other->state = ps_disconnected;
break;
default:
fprintf(stderr,"connected pipe has strange state %d!\n",
user->other->state);
}
user->other->other=NULL;
user->other = NULL;
}
case ps_wait_disconnect:
assert( server->fd );
return (struct fd *) grab_object( server->fd );
/* remove user from pipe's user list */
if (user->next) user->next->prev = user->prev;
if (user->prev) user->prev->next = user->next;
else user->pipe->users = user->next;
if (user->thread) release_object(user->thread);
release_object(user->pipe);
if (user->fd) release_object( user->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 int pipe_user_get_poll_events( struct fd *fd )
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_user_get_info( struct fd *fd, struct get_file_info_reply *reply, int *flags )
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 );
}
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,
struct get_file_info_reply *reply, int *flags )
{
if (reply)
{
@ -234,12 +493,15 @@ static struct named_pipe *create_named_pipe( const WCHAR *name, size_t len )
{
struct named_pipe *pipe;
if ((pipe = create_named_object( sync_namespace, &named_pipe_ops, name, len )))
pipe = create_named_object( sync_namespace, &named_pipe_ops, name, len );
if( pipe )
{
if (get_error() != STATUS_OBJECT_NAME_COLLISION)
if( get_error() != STATUS_OBJECT_NAME_COLLISION )
{
/* initialize it if it didn't already exist */
pipe->users = 0;
pipe->servers = 0;
pipe->instances = 0;
pipe->connect_waiters = NULL;
}
}
return pipe;
@ -260,65 +522,80 @@ static struct named_pipe *open_named_pipe( const WCHAR *name, size_t len )
return NULL;
}
static struct pipe_user *get_pipe_user_obj( struct process *process, obj_handle_t handle,
unsigned int access )
static struct pipe_server *get_pipe_server_obj( struct process *process,
obj_handle_t handle, unsigned int access )
{
return (struct pipe_user *)get_handle_obj( process, handle, access, &pipe_user_ops );
struct object *obj;
obj = get_handle_obj( process, handle, access, &pipe_server_ops );
return (struct pipe_server *) obj;
}
static struct pipe_user *create_pipe_user( struct named_pipe *pipe )
static struct pipe_server *create_pipe_server( struct named_pipe *pipe )
{
struct pipe_user *user;
struct pipe_server *server;
user = alloc_object( &pipe_user_ops );
if(!user)
server = alloc_object( &pipe_server_ops );
if( !server )
return NULL;
user->fd = NULL;
user->pipe = pipe;
user->state = ps_none;
user->other = NULL;
user->thread = NULL;
user->func = NULL;
user->overlapped = 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 users */
if ((user->next = pipe->users)) user->next->prev = user;
user->prev = NULL;
pipe->users = user;
/* add to list of pipe servers */
if ((server->next = pipe->servers)) server->next->prev = server;
server->prev = NULL;
pipe->servers = server;
grab_object(pipe);
grab_object( pipe );
return user;
return server;
}
static struct pipe_user *find_partner(struct named_pipe *pipe, enum pipe_state state)
static struct pipe_client *create_pipe_client( struct pipe_server *server )
{
struct pipe_user *x;
struct pipe_client *client;
for(x = pipe->users; x; x=x->next)
{
if(x->state==state)
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)
if( !x )
return NULL;
return (struct pipe_user *)grab_object( x );
return (struct pipe_server *) grab_object( x );
}
DECL_HANDLER(create_named_pipe)
{
struct named_pipe *pipe;
struct pipe_user *user;
struct pipe_server *server;
reply->handle = 0;
pipe = create_named_pipe( get_req_data(), get_req_data_size() );
if(!pipe)
if( !pipe )
return;
if (get_error() != STATUS_OBJECT_NAME_COLLISION)
if( get_error() != STATUS_OBJECT_NAME_COLLISION )
{
pipe->insize = req->insize;
pipe->outsize = req->outsize;
@ -326,14 +603,33 @@ DECL_HANDLER(create_named_pipe)
pipe->timeout = req->timeout;
pipe->pipemode = req->pipemode;
}
user = create_pipe_user( pipe );
if(user)
else
{
user->state = ps_idle_server;
reply->handle = alloc_handle( current->process, user, GENERIC_READ|GENERIC_WRITE, 0 );
release_object( user );
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, 0 );
server->pipe->instances++;
release_object( server );
}
release_object( pipe );
@ -341,147 +637,173 @@ DECL_HANDLER(create_named_pipe)
DECL_HANDLER(open_named_pipe)
{
struct pipe_user *user, *partner;
struct pipe_server *server;
struct pipe_client *client;
struct named_pipe *pipe;
int fds[2];
reply->handle = 0;
if (!(pipe = open_named_pipe( get_req_data(), get_req_data_size() )))
pipe = open_named_pipe( get_req_data(), get_req_data_size() );
if ( !pipe )
{
set_error( STATUS_NO_SUCH_FILE );
return;
}
if (!(partner = find_partner(pipe, ps_wait_open)))
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 )
{
release_object(pipe);
set_error( STATUS_PIPE_NOT_AVAILABLE );
return;
}
if ((user = create_pipe_user( pipe )))
{
int fds[2];
if(!socketpair(PF_UNIX, SOCK_STREAM, 0, fds))
client = create_pipe_client( server );
if( client )
{
user->fd = create_anonymous_fd( &pipe_user_fd_ops, fds[1], &user->obj );
partner->fd = create_anonymous_fd( &pipe_user_fd_ops, fds[0], &partner->obj );
if (user->fd && partner->fd)
if( !socketpair( PF_UNIX, SOCK_STREAM, 0, fds ) )
{
notify_waiter(partner,STATUS_SUCCESS);
partner->state = ps_connected_server;
partner->other = user;
user->state = ps_connected_client;
user->other = partner;
reply->handle = alloc_handle( current->process, user, req->access, 0 );
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, 0 );
}
}
else file_set_error();
else
file_set_error();
release_object( user );
release_object( client );
}
release_object( partner );
release_object( pipe );
}
DECL_HANDLER(connect_named_pipe)
{
struct pipe_user *user, *partner;
struct pipe_server *server;
user = get_pipe_user_obj(current->process, req->handle, 0);
if(!user)
server = get_pipe_server_obj(current->process, req->handle, 0);
if(!server)
return;
if( user->state != ps_idle_server )
switch( server->state )
{
set_error(STATUS_PORT_ALREADY_SET);
}
else
{
user->state = ps_wait_open;
user->thread = (struct thread *)grab_object(current);
user->func = req->func;
user->overlapped = req->overlapped;
/* notify all waiters that a pipe just became available */
while( (partner = find_partner(user->pipe,ps_wait_connect)) )
{
notify_waiter(partner,STATUS_SUCCESS);
release_object(partner);
}
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(user);
release_object(server);
}
DECL_HANDLER(wait_named_pipe)
{
struct named_pipe *pipe;
struct pipe_user *partner;
struct pipe_server *server;
if (!(pipe = open_named_pipe( get_req_data(), get_req_data_size() )))
{
set_error( STATUS_PIPE_NOT_AVAILABLE );
return;
}
if( (partner = find_partner(pipe,ps_wait_open)) )
server = find_server( pipe, ps_wait_open );
if( server )
{
/* this should use notify_waiter,
but no pipe_user object exists now... */
thread_queue_apc(current,NULL,req->func,
APC_ASYNC, 1, req->overlapped, STATUS_SUCCESS, NULL);
release_object(partner);
/* 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
{
struct pipe_user *user;
queue_connect_waiter( pipe, req->func, req->overlapped );
if( (user = create_pipe_user( pipe )) )
{
user->state = ps_wait_connect;
user->thread = (struct thread *)grab_object(current);
user->func = req->func;
user->overlapped = req->overlapped;
/* don't release it */
}
}
release_object(pipe);
release_object( pipe );
}
DECL_HANDLER(disconnect_named_pipe)
{
struct pipe_user *user;
struct pipe_server *server;
user = get_pipe_user_obj(current->process, req->handle, 0);
if(!user)
reply->fd = -1;
server = get_pipe_server_obj( current->process, req->handle, 0 );
if( !server )
return;
if( (user->state == ps_connected_server) &&
(user->other->state == ps_connected_client) )
switch( server->state )
{
release_object( user->other->fd );
user->other->fd = NULL;
user->other->state = ps_disconnected;
user->other->other = NULL;
case ps_connected_server:
assert( server->fd );
assert( server->client );
assert( server->client->fd );
release_object( user->fd );
user->fd = NULL;
user->state = ps_idle_server;
user->other = NULL;
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(user);
release_object( server );
}
DECL_HANDLER(get_named_pipe_info)
{
struct pipe_user *user;
struct pipe_server *server;
user = get_pipe_user_obj(current->process, req->handle, 0);
if(!user)
server = get_pipe_server_obj( current->process, req->handle, 0 );
if(!server)
return;
reply->flags = user->pipe->pipemode;
reply->maxinstances = user->pipe->maxinstances;
reply->insize = user->pipe->insize;
reply->outsize = user->pipe->outsize;
reply->flags = server->pipe->pipemode;
reply->maxinstances = server->pipe->maxinstances;
reply->insize = server->pipe->insize;
reply->outsize = server->pipe->outsize;
release_object(user);
release_object(server);
}

4
server/protocol.def
View file

@ -665,6 +665,8 @@ enum fd_type
/* Flush a file buffers */
@REQ(flush_file)
obj_handle_t handle; /* handle to the file */
@REPLY
obj_handle_t event; /* event set when finished */
@END
@ -1739,6 +1741,8 @@ enum message_type
/* Disconnect a named pipe */
@REQ(disconnect_named_pipe)
obj_handle_t handle;
@REPLY
int fd; /* associated fd to close */
@END

4
server/serial.c
View file

@ -58,7 +58,7 @@ static void serial_destroy(struct object *obj);
static int serial_get_poll_events( struct fd *fd );
static void serial_poll_event( struct fd *fd, int event );
static int serial_get_info( struct fd *fd, struct get_file_info_reply *reply, int *flags );
static int serial_flush( struct fd *fd );
static int serial_flush( struct fd *fd, struct event **event );
static void serial_queue_async(struct fd *fd, void *ptr, unsigned int status, int type, int count);
struct serial
@ -329,7 +329,7 @@ static void serial_queue_async(struct fd *fd, void *ptr, unsigned int status, in
set_fd_events ( fd, serial_get_poll_events( fd ));
}
static int serial_flush( struct fd *fd )
static int serial_flush( struct fd *fd, struct event **event )
{
/* MSDN says: If hFile is a handle to a communications device,
* the function only flushes the transmit buffer.

14
server/trace.c
View file

@ -877,6 +877,11 @@ static void dump_flush_file_request( const struct flush_file_request *req )
fprintf( stderr, " handle=%p", req->handle );
}
static void dump_flush_file_reply( const struct flush_file_reply *req )
{
fprintf( stderr, " event=%p", req->event );
}
static void dump_get_file_info_request( const struct get_file_info_request *req )
{
fprintf( stderr, " handle=%p", req->handle );
@ -1993,6 +1998,11 @@ static void dump_disconnect_named_pipe_request( const struct disconnect_named_pi
fprintf( stderr, " handle=%p", req->handle );
}
static void dump_disconnect_named_pipe_reply( const struct disconnect_named_pipe_reply *req )
{
fprintf( stderr, " fd=%d", req->fd );
}
static void dump_get_named_pipe_info_request( const struct get_named_pipe_info_request *req )
{
fprintf( stderr, " handle=%p", req->handle );
@ -2660,7 +2670,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_set_file_pointer_reply,
(dump_func)0,
(dump_func)0,
(dump_func)0,
(dump_func)dump_flush_file_reply,
(dump_func)dump_get_file_info_reply,
(dump_func)dump_lock_file_reply,
(dump_func)0,
@ -2755,7 +2765,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_open_named_pipe_reply,
(dump_func)0,
(dump_func)0,
(dump_func)0,
(dump_func)dump_disconnect_named_pipe_reply,
(dump_func)dump_get_named_pipe_info_reply,
(dump_func)dump_create_smb_reply,
(dump_func)dump_get_smb_info_reply,