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server: Add support for retrieving results of queued ioctls once they are done.

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This commit is contained in:
Alexandre Julliard 2007-05-08 20:45:44 +02:00
parent 78b75108cd
commit aafcfe7663
6 changed files with 120 additions and 3 deletions
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38
dlls/ntdll/file.c
View file

@ -918,10 +918,35 @@ done:
}
struct async_ioctl
{
HANDLE handle; /* handle to the device */
void *buffer; /* buffer for output */
ULONG size; /* size of buffer */
};
/* callback for ioctl async I/O completion */
static NTSTATUS ioctl_completion( void *arg, IO_STATUS_BLOCK *io, NTSTATUS status )
{
io->u.Status = status;
struct async_ioctl *async = arg;
if (status == STATUS_ALERTED)
{
SERVER_START_REQ( get_ioctl_result )
{
req->handle = async->handle;
req->user_arg = async;
wine_server_set_reply( req, async->buffer, async->size );
if (!(status = wine_server_call( req )))
io->Information = wine_server_reply_size( reply );
}
SERVER_END_REQ;
}
if (status != STATUS_PENDING)
{
RtlFreeHeap( GetProcessHeap(), 0, async );
io->u.Status = status;
}
return status;
}
@ -932,17 +957,24 @@ static NTSTATUS server_ioctl_file( HANDLE handle, HANDLE event,
PVOID in_buffer, ULONG in_size,
PVOID out_buffer, ULONG out_size )
{
struct async_ioctl *async;
NTSTATUS status;
HANDLE wait_handle;
ULONG options;
if (!(async = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*async) )))
return STATUS_NO_MEMORY;
async->handle = handle;
async->buffer = out_buffer;
async->size = out_size;
SERVER_START_REQ( ioctl )
{
req->handle = handle;
req->code = code;
req->async.callback = ioctl_completion;
req->async.iosb = io;
req->async.arg = NULL;
req->async.arg = async;
req->async.apc = apc;
req->async.apc_arg = apc_context;
req->async.event = event;
@ -959,6 +991,8 @@ static NTSTATUS server_ioctl_file( HANDLE handle, HANDLE event,
FIXME("Unsupported ioctl %x (device=%x access=%x func=%x method=%x)\n",
code, code >> 16, (code >> 14) & 3, (code >> 2) & 0xfff, code & 3);
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, async );
if (wait_handle)
{
NtWaitForSingleObject( wait_handle, (options & FILE_SYNCHRONOUS_IO_ALERT), NULL );

19
include/wine/server_protocol.h
View file

@ -2684,6 +2684,20 @@ struct ioctl_reply
struct get_ioctl_result_request
{
struct request_header __header;
obj_handle_t handle;
void* user_arg;
};
struct get_ioctl_result_reply
{
struct reply_header __header;
/* VARARG(out_data,bytes); */
};
struct create_named_pipe_request
{
struct request_header __header;
@ -4172,6 +4186,7 @@ enum request
REQ_register_async,
REQ_cancel_async,
REQ_ioctl,
REQ_get_ioctl_result,
REQ_create_named_pipe,
REQ_get_named_pipe_info,
REQ_create_window,
@ -4397,6 +4412,7 @@ union generic_request
struct register_async_request register_async_request;
struct cancel_async_request cancel_async_request;
struct ioctl_request ioctl_request;
struct get_ioctl_result_request get_ioctl_result_request;
struct create_named_pipe_request create_named_pipe_request;
struct get_named_pipe_info_request get_named_pipe_info_request;
struct create_window_request create_window_request;
@ -4620,6 +4636,7 @@ union generic_reply
struct register_async_reply register_async_reply;
struct cancel_async_reply cancel_async_reply;
struct ioctl_reply ioctl_reply;
struct get_ioctl_result_reply get_ioctl_result_reply;
struct create_named_pipe_reply create_named_pipe_reply;
struct get_named_pipe_info_reply get_named_pipe_info_reply;
struct create_window_reply create_window_reply;
@ -4705,6 +4722,6 @@ union generic_reply
struct get_next_device_request_reply get_next_device_request_reply;
};
#define SERVER_PROTOCOL_VERSION 302
#define SERVER_PROTOCOL_VERSION 303
#endif /* __WINE_WINE_SERVER_PROTOCOL_H */

40
server/device.c
View file

@ -269,6 +269,18 @@ static enum server_fd_type device_get_fd_type( struct fd *fd )
return FD_TYPE_DEVICE;
}
static struct ioctl_call *find_ioctl_call( struct device *device, struct thread *thread,
void *user_arg )
{
struct ioctl_call *ioctl;
LIST_FOR_EACH_ENTRY( ioctl, &device->requests, struct ioctl_call, dev_entry )
if (ioctl->thread == thread && ioctl->user_arg == user_arg) return ioctl;
set_error( STATUS_INVALID_PARAMETER );
return NULL;
}
static obj_handle_t device_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async_data,
const void *data, data_size_t size )
{
@ -488,3 +500,31 @@ DECL_HANDLER(get_next_device_request)
release_object( manager );
}
/* retrieve results of an async ioctl */
DECL_HANDLER(get_ioctl_result)
{
struct device *device;
struct ioctl_call *ioctl;
if (!(device = (struct device *)get_handle_obj( current->process, req->handle, 0, &device_ops )))
return;
if ((ioctl = find_ioctl_call( device, current, req->user_arg )))
{
if (ioctl->out_data)
{
data_size_t size = min( ioctl->out_size, get_reply_max_size() );
if (size)
{
set_reply_data_ptr( ioctl->out_data, size );
ioctl->out_data = NULL;
}
}
set_error( ioctl->status );
list_remove( &ioctl->dev_entry );
release_object( ioctl ); /* no longer on the device queue */
}
release_object( device );
}

9
server/protocol.def
View file

@ -1979,6 +1979,15 @@ enum message_type
@END
/* Retrieve results of an async ioctl */
@REQ(get_ioctl_result)
obj_handle_t handle; /* handle to the device */
void* user_arg; /* user arg used to identify the request */
@REPLY
VARARG(out_data,bytes); /* ioctl output data */
@END
/* Create a named pipe */
@REQ(create_named_pipe)
unsigned int access;

2
server/request.h
View file

@ -245,6 +245,7 @@ DECL_HANDLER(set_serial_info);
DECL_HANDLER(register_async);
DECL_HANDLER(cancel_async);
DECL_HANDLER(ioctl);
DECL_HANDLER(get_ioctl_result);
DECL_HANDLER(create_named_pipe);
DECL_HANDLER(get_named_pipe_info);
DECL_HANDLER(create_window);
@ -469,6 +470,7 @@ static const req_handler req_handlers[REQ_NB_REQUESTS] =
(req_handler)req_register_async,
(req_handler)req_cancel_async,
(req_handler)req_ioctl,
(req_handler)req_get_ioctl_result,
(req_handler)req_create_named_pipe,
(req_handler)req_get_named_pipe_info,
(req_handler)req_create_window,

15
server/trace.c
View file

@ -2424,6 +2424,18 @@ static void dump_ioctl_reply( const struct ioctl_reply *req )
dump_varargs_bytes( cur_size );
}
static void dump_get_ioctl_result_request( const struct get_ioctl_result_request *req )
{
fprintf( stderr, " handle=%p,", req->handle );
fprintf( stderr, " user_arg=%p", req->user_arg );
}
static void dump_get_ioctl_result_reply( const struct get_ioctl_result_reply *req )
{
fprintf( stderr, " out_data=" );
dump_varargs_bytes( cur_size );
}
static void dump_create_named_pipe_request( const struct create_named_pipe_request *req )
{
fprintf( stderr, " access=%08x,", req->access );
@ -3650,6 +3662,7 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_register_async_request,
(dump_func)dump_cancel_async_request,
(dump_func)dump_ioctl_request,
(dump_func)dump_get_ioctl_result_request,
(dump_func)dump_create_named_pipe_request,
(dump_func)dump_get_named_pipe_info_request,
(dump_func)dump_create_window_request,
@ -3871,6 +3884,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)0,
(dump_func)0,
(dump_func)dump_ioctl_reply,
(dump_func)dump_get_ioctl_result_reply,
(dump_func)dump_create_named_pipe_reply,
(dump_func)dump_get_named_pipe_info_reply,
(dump_func)dump_create_window_reply,
@ -4092,6 +4106,7 @@ static const char * const req_names[REQ_NB_REQUESTS] = {
"register_async",
"cancel_async",
"ioctl",
"get_ioctl_result",
"create_named_pipe",
"get_named_pipe_info",
"create_window",