Sweden-Number/server/device.c

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/*
* Server-side device management
*
* Copyright (C) 1999 Alexandre Julliard
*
* 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
*/
/*
* FIXME:
* all this stuff is a simple hack to avoid breaking
* client-side device support.
*/
#include <assert.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "handle.h"
#include "thread.h"
#include "request.h"
struct device
{
struct object obj; /* object header */
int id; /* client identifier */
};
static void device_dump( struct object *obj, int verbose );
static const struct object_ops device_ops =
{
sizeof(struct device), /* size */
device_dump, /* dump */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
NULL, /* satisfied */
no_get_fd, /* get_fd */
no_destroy /* destroy */
};
static struct device *create_device( int id )
{
struct device *dev;
if ((dev = alloc_object( &device_ops )))
{
dev->id = id;
}
return dev;
}
static void device_dump( struct object *obj, int verbose )
{
struct device *dev = (struct device *)obj;
assert( obj->ops == &device_ops );
fprintf( stderr, "Device id=%08x\n", dev->id );
}
/* create a device */
DECL_HANDLER(create_device)
{
struct device *dev;
reply->handle = 0;
if ((dev = create_device( req->id )))
{
reply->handle = alloc_handle( current->process, dev, req->access, req->inherit );
release_object( dev );
}
}
/* Retrieve the client private id for a device */
DECL_HANDLER(get_device_id)
{
struct device *dev;
if ((dev = (struct device *)get_handle_obj( current->process, req->handle, 0, &device_ops )))
{
reply->id = dev->id;
release_object( dev );
}
}