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server: Allow a device file to be mapped directly to a Unix device.

oldstable
Alexandre Julliard 2015-05-21 17:18:08 +09:00
parent b191519a4b
commit b414b93d5a
1 changed files with 18 additions and 1 deletions
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19
server/device.c
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@ -18,7 +18,11 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
@ -120,6 +124,7 @@ struct device
{
struct object obj; /* object header */
struct device_manager *manager; /* manager for this device (or NULL if deleted) */
char *unix_path; /* path to unix device if any */
client_ptr_t user_ptr; /* opaque ptr for client side */
struct list entry; /* entry in device manager list */
struct list files; /* list of open files */
@ -326,6 +331,7 @@ static void device_destroy( struct object *obj )
assert( list_empty( &device->files ));
free( device->unix_path );
if (device->manager) list_remove( &device->entry );
}
@ -340,7 +346,17 @@ static struct object *device_open_file( struct object *obj, unsigned int access,
file->device = (struct device *)grab_object( device );
list_init( &file->requests );
list_add_tail( &device->files, &file->entry );
if (!(file->fd = alloc_pseudo_fd( &device_file_fd_ops, &file->obj, 0 )))
if (device->unix_path)
{
mode_t mode = 0666;
access = file->obj.ops->map_access( &file->obj, access );
file->fd = open_fd( NULL, device->unix_path, O_NONBLOCK | O_LARGEFILE,
&mode, access, sharing, options );
if (file->fd) set_fd_user( file->fd, &device_file_fd_ops, &file->obj );
}
else file->fd = alloc_pseudo_fd( &device_file_fd_ops, &file->obj, 0 );
if (!file->fd)
{
release_object( file );
file = NULL;
@ -509,6 +525,7 @@ static struct device *create_device( struct directory *root, const struct unicod
if (get_error() != STATUS_OBJECT_NAME_EXISTS)
{
/* initialize it if it didn't already exist */
device->unix_path = NULL;
device->manager = manager;
list_add_tail( &manager->devices, &device->entry );
list_init( &device->files );