Sweden-Number/server/change.c

89 lines
2.2 KiB
C

/*
* Server-side change notification management
*
* Copyright (C) 1998 Alexandre Julliard
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "winerror.h"
#include "winnt.h"
#include "handle.h"
#include "thread.h"
struct change
{
struct object obj; /* object header */
int subtree; /* watch all the subtree */
int filter; /* notification filter */
};
static void change_dump( struct object *obj, int verbose );
static int change_signaled( struct object *obj, struct thread *thread );
static void change_destroy( struct object *obj );
static const struct object_ops change_ops =
{
change_dump,
add_queue,
remove_queue,
change_signaled,
no_satisfied,
no_read_fd,
no_write_fd,
no_flush,
no_get_file_info,
change_destroy
};
static struct object *create_change_notification( int subtree, int filter )
{
struct change *change;
if (!(change = mem_alloc( sizeof(*change) ))) return NULL;
init_object( &change->obj, &change_ops, NULL );
change->subtree = subtree;
change->filter = filter;
return &change->obj;
}
static void change_dump( struct object *obj, int verbose )
{
struct change *change = (struct change *)obj;
assert( obj->ops == &change_ops );
fprintf( stderr, "Change notification sub=%d filter=%08x\n",
change->subtree, change->filter );
}
static int change_signaled( struct object *obj, struct thread *thread )
{
/* struct change *change = (struct change *)obj;*/
assert( obj->ops == &change_ops );
return 0; /* never signaled for now */
}
static void change_destroy( struct object *obj )
{
struct change *change = (struct change *)obj;
assert( obj->ops == &change_ops );
free( change );
}
/* create a change notification */
DECL_HANDLER(create_change_notification)
{
struct object *obj;
struct create_change_notification_reply reply = { -1 };
if ((obj = create_change_notification( req->subtree, req->filter )))
{
reply.handle = alloc_handle( current->process, obj,
STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE, 0 );
release_object( obj );
}
send_reply( current, -1, 1, &reply, sizeof(reply) );
}