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Implemented registry change notifications.

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This commit is contained in:
Mike McCormack 2002-11-25 02:47:32 +00:00 committed by Alexandre Julliard
parent c124fd6f04
commit 11f4b44451
9 changed files with 210 additions and 9 deletions
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27
dlls/advapi32/registry.c
View File

@ -1841,7 +1841,30 @@ LONG WINAPI RegNotifyChangeKeyValue( HKEY hkey, BOOL fWatchSubTree,
DWORD fdwNotifyFilter, HANDLE hEvent,
BOOL fAsync )
{
FIXME("(%p,%i,%ld,%p,%i): stub\n",hkey,fWatchSubTree,fdwNotifyFilter,
LONG ret;
TRACE("(%p,%i,%ld,%p,%i)\n",hkey,fWatchSubTree,fdwNotifyFilter,
hEvent,fAsync);
return ERROR_SUCCESS;
if( !fAsync )
hEvent = CreateEventA(NULL, 0, 0, NULL);
SERVER_START_REQ( set_registry_notification )
{
req->hkey = hkey;
req->event = hEvent;
req->subtree = fWatchSubTree;
req->filter = fdwNotifyFilter;
ret = RtlNtStatusToDosError( wine_server_call(req) );
}
SERVER_END_REQ;
if( !fAsync )
{
if( ret == ERROR_SUCCESS )
WaitForSingleObject( hEvent, INFINITE );
CloseHandle( hEvent );
}
return ret;
}

19
include/wine/server_protocol.h
View File

@ -1893,6 +1893,20 @@ struct set_registry_levels_reply
};
struct set_registry_notification_request
{
struct request_header __header;
obj_handle_t hkey;
obj_handle_t event;
int subtree;
unsigned int filter;
};
struct set_registry_notification_reply
{
struct reply_header __header;
};
struct create_timer_request
{
@ -3044,6 +3058,7 @@ enum request
REQ_save_registry,
REQ_save_registry_atexit,
REQ_set_registry_levels,
REQ_set_registry_notification,
REQ_create_timer,
REQ_open_timer,
REQ_set_timer,
@ -3220,6 +3235,7 @@ union generic_request
struct save_registry_request save_registry_request;
struct save_registry_atexit_request save_registry_atexit_request;
struct set_registry_levels_request set_registry_levels_request;
struct set_registry_notification_request set_registry_notification_request;
struct create_timer_request create_timer_request;
struct open_timer_request open_timer_request;
struct set_timer_request set_timer_request;
@ -3394,6 +3410,7 @@ union generic_reply
struct save_registry_reply save_registry_reply;
struct save_registry_atexit_reply save_registry_atexit_reply;
struct set_registry_levels_reply set_registry_levels_reply;
struct set_registry_notification_reply set_registry_notification_reply;
struct create_timer_reply create_timer_reply;
struct open_timer_reply open_timer_reply;
struct set_timer_reply set_timer_reply;
@ -3462,6 +3479,6 @@ union generic_reply
struct get_next_hook_reply get_next_hook_reply;
};
#define SERVER_PROTOCOL_VERSION 91
#define SERVER_PROTOCOL_VERSION 92
#endif /* __WINE_WINE_SERVER_PROTOCOL_H */

5
include/winnt.h
View File

@ -3360,7 +3360,10 @@ typedef enum tagSID_NAME_USE {
#define REG_OPENED_EXISTING_KEY 0x00000002
/* For RegNotifyChangeKeyValue */
#define REG_NOTIFY_CHANGE_NAME 0x1
#define REG_NOTIFY_CHANGE_NAME 0x01
#define REG_NOTIFY_CHANGE_ATTRIBUTES 0x02
#define REG_NOTIFY_CHANGE_LAST_SET 0x04
#define REG_NOTIFY_CHANGE_SECURITY 0x08
#define KEY_QUERY_VALUE 0x00000001
#define KEY_SET_VALUE 0x00000002

2
server/handle.c
View File

@ -332,6 +332,8 @@ int close_handle( struct process *process, obj_handle_t handle, int *fd )
table = handle_is_global(handle) ? global_table : process->handles;
if (entry < table->entries + table->free) table->free = entry - table->entries;
if (entry == table->entries + table->last) shrink_handle_table( table );
/* hack: windows seems to treat registry handles differently */
registry_close_handle( obj, handle );
release_object( obj );
return 1;
}

1
server/object.h
View File

@ -195,6 +195,7 @@ extern int get_page_size(void);
extern void init_registry(void);
extern void flush_registry(void);
extern void close_registry(void);
extern void registry_close_handle( struct object *obj, obj_handle_t hkey );
/* atom functions */

8
server/protocol.def
View File

@ -1358,6 +1358,14 @@ enum char_info_mode
@END
@REQ(set_registry_notification)
obj_handle_t hkey; /* key to watch for changes */
obj_handle_t event; /* event to set */
int subtree; /* should we watch the whole subtree? */
unsigned int filter; /* things to watch */
@END
/* Create a waitable timer */
@REQ(create_timer)
int inherit; /* inherit flag */

144
server/registry.c
View File

@ -48,6 +48,16 @@
#include "winternl.h"
#include "wine/library.h"
struct notify
{
struct event *event; /* event to set when changing this key */
int subtree; /* true if subtree notification */
unsigned int filter; /* which events to notify on */
obj_handle_t hkey; /* hkey associated with this notification */
struct notify *next; /* list of notifications */
struct notify *prev; /* list of notifications */
};
/* a registry key */
struct key
{
@ -64,6 +74,8 @@ struct key
short flags; /* flags */
short level; /* saving level */
time_t modif; /* last modification time */
struct notify *first_notify; /* list of notifications */
struct notify *last_notify; /* list of notifications */
};
/* key flags */
@ -284,6 +296,53 @@ static void key_dump( struct object *obj, int verbose )
fprintf( stderr, "\n" );
}
/* notify waiter and maybe delete the notification */
static void do_notification( struct key *key, struct notify *notify, int del )
{
if( notify->event )
{
set_event( notify->event );
release_object( notify->event );
notify->event = NULL;
}
if ( !del )
return;
if( notify->next )
notify->next->prev = notify->prev;
else
key->last_notify = notify->prev;
if( notify->prev )
notify->prev->next = notify->next;
else
key->first_notify = notify->next;
free( notify );
}
static struct notify *find_notify( struct key *key, obj_handle_t hkey)
{
struct notify *n;
for( n=key->first_notify; n; n = n->next)
if( n->hkey == hkey )
break;
return n;
}
/* close the notification associated with a handle */
void registry_close_handle( struct object *obj, obj_handle_t hkey )
{
struct key * key = (struct key *) obj;
struct notify *notify;
if( obj->ops != &key_ops )
return;
notify = find_notify( key, hkey );
if( !notify )
return;
do_notification( key, notify, 1 );
}
static void key_destroy( struct object *obj )
{
int i;
@ -302,6 +361,9 @@ static void key_destroy( struct object *obj )
key->subkeys[i]->parent = NULL;
release_object( key->subkeys[i] );
}
/* unconditionally notify everything waiting on this key */
while ( key->first_notify )
do_notification( key, key->first_notify, 1 );
}
/* duplicate a key path */
@ -389,6 +451,8 @@ static struct key *alloc_key( const WCHAR *name, time_t modif )
key->level = current_level;
key->modif = modif;
key->parent = NULL;
key->first_notify = NULL;
key->last_notify = NULL;
if (!(key->name = strdupW( name )))
{
release_object( key );
@ -420,12 +484,32 @@ static void make_clean( struct key *key )
for (i = 0; i <= key->last_subkey; i++) make_clean( key->subkeys[i] );
}
/* update key modification time */
static void touch_key( struct key *key )
/* go through all the notifications and send them if necessary */
void check_notify( struct key *key, unsigned int change, int not_subtree )
{
struct notify *n = key->first_notify;
while (n)
{
struct notify *next = n->next;
if ( ( not_subtree || n->subtree ) && ( change & n->filter ) )
do_notification( key, n, 0 );
n = next;
}
}
/* update key modification time */
static void touch_key( struct key *key, unsigned int change )
{
struct key *k;
key->modif = time(NULL);
key->level = max( key->level, current_level );
make_dirty( key );
/* do notifications */
check_notify( key, change, 1 );
for ( k = key->parent; k; k = k->parent )
check_notify( k, change & ~REG_NOTIFY_CHANGE_LAST_SET, 0 );
}
/* try to grow the array of subkeys; return 1 if OK, 0 on error */
@ -583,6 +667,7 @@ static struct key *create_key( struct key *key, WCHAR *name, WCHAR *class,
if (!*path) goto done;
*created = 1;
touch_key( key, REG_NOTIFY_CHANGE_NAME ); /* FIXME: is this right? */
if (flags & KEY_DIRTY) make_dirty( key );
base = key;
base_idx = index;
@ -718,7 +803,7 @@ static void delete_key( struct key *key )
}
if (debug_level > 1) dump_operation( key, NULL, "Delete" );
free_subkey( parent, index );
touch_key( parent );
touch_key( parent, REG_NOTIFY_CHANGE_NAME );
}
/* try to grow the array of values; return 1 if OK, 0 on error */
@ -821,7 +906,7 @@ static void set_value( struct key *key, WCHAR *name, int type, const void *data,
value->type = type;
value->len = len;
value->data = ptr;
touch_key( key );
touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
if (debug_level > 1) dump_operation( key, value, "Set" );
}
@ -912,7 +997,7 @@ static void delete_value( struct key *key, const WCHAR *name )
if (value->data) free( value->data );
for (i = index; i < key->last_value; i++) key->values[i] = key->values[i + 1];
key->last_value--;
touch_key( key );
touch_key( key, REG_NOTIFY_CHANGE_LAST_SET );
/* try to shrink the array */
nb_values = key->nb_values;
@ -1817,3 +1902,52 @@ DECL_HANDLER(save_registry_atexit)
release_object( key );
}
}
/* add a registry key change notification */
DECL_HANDLER(set_registry_notification)
{
struct key *key;
struct event *event;
struct notify *notify;
key = get_hkey_obj( req->hkey, KEY_NOTIFY );
if( key )
{
event = get_event_obj( current->process, req->event, SYNCHRONIZE );
if( event )
{
notify = find_notify( key, req->hkey );
if( notify )
{
release_object( notify->event );
grab_object( event );
notify->event = event;
}
else
{
notify = (struct notify *) malloc (sizeof *notify);
if( notify )
{
grab_object( event );
notify->event = event;
notify->subtree = req->subtree;
notify->filter = req->filter;
notify->hkey = req->hkey;
/* add to linked list */
notify->prev = NULL;
notify->next = key->first_notify;
if ( notify->next )
notify->next->prev = notify;
else
key->last_notify = notify;
key->first_notify = notify;
}
else
set_error( STATUS_NO_MEMORY );
}
release_object( event );
}
release_object( key );
}
}

2
server/request.h
View File

@ -206,6 +206,7 @@ DECL_HANDLER(load_registry);
DECL_HANDLER(save_registry);
DECL_HANDLER(save_registry_atexit);
DECL_HANDLER(set_registry_levels);
DECL_HANDLER(set_registry_notification);
DECL_HANDLER(create_timer);
DECL_HANDLER(open_timer);
DECL_HANDLER(set_timer);
@ -381,6 +382,7 @@ static const req_handler req_handlers[REQ_NB_REQUESTS] =
(req_handler)req_save_registry,
(req_handler)req_save_registry_atexit,
(req_handler)req_set_registry_levels,
(req_handler)req_set_registry_notification,
(req_handler)req_create_timer,
(req_handler)req_open_timer,
(req_handler)req_set_timer,

11
server/trace.c
View File

@ -1569,6 +1569,14 @@ static void dump_set_registry_levels_request( const struct set_registry_levels_r
fprintf( stderr, " period=%d", req->period );
}
static void dump_set_registry_notification_request( const struct set_registry_notification_request *req )
{
fprintf( stderr, " hkey=%p,", req->hkey );
fprintf( stderr, " event=%p,", req->event );
fprintf( stderr, " subtree=%d,", req->subtree );
fprintf( stderr, " filter=%08x", req->filter );
}
static void dump_create_timer_request( const struct create_timer_request *req )
{
fprintf( stderr, " inherit=%d,", req->inherit );
@ -2445,6 +2453,7 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_save_registry_request,
(dump_func)dump_save_registry_atexit_request,
(dump_func)dump_set_registry_levels_request,
(dump_func)dump_set_registry_notification_request,
(dump_func)dump_create_timer_request,
(dump_func)dump_open_timer_request,
(dump_func)dump_set_timer_request,
@ -2617,6 +2626,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)0,
(dump_func)0,
(dump_func)0,
(dump_func)0,
(dump_func)dump_create_timer_reply,
(dump_func)dump_open_timer_reply,
(dump_func)0,
@ -2789,6 +2799,7 @@ static const char * const req_names[REQ_NB_REQUESTS] = {
"save_registry",
"save_registry_atexit",
"set_registry_levels",
"set_registry_notification",
"create_timer",
"open_timer",
"set_timer",