Sweden-Number/files/change.c

137 lines
3.9 KiB
C

/*
* Win32 file change notification functions
*
* Copyright 1998 Ulrich Weigand
*/
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include "windows.h"
#include "winbase.h"
#include "winerror.h"
#include "process.h"
#include "thread.h"
#include "heap.h"
#include "server.h"
#include "debug.h"
static void CHANGE_Destroy( K32OBJ *obj );
const K32OBJ_OPS CHANGE_Ops =
{
CHANGE_Destroy /* destroy */
};
/* The change notification object */
typedef struct
{
K32OBJ header;
LPSTR lpPathName;
BOOL32 bWatchSubtree;
DWORD dwNotifyFilter;
BOOL32 notify;
} CHANGE_OBJECT;
/****************************************************************************
* CHANGE_Destroy
*/
static void CHANGE_Destroy( K32OBJ *obj )
{
CHANGE_OBJECT *change = (CHANGE_OBJECT *)obj;
assert( obj->type == K32OBJ_CHANGE );
if ( change->lpPathName )
{
HeapFree( SystemHeap, 0, change->lpPathName );
change->lpPathName = NULL;
}
obj->type = K32OBJ_UNKNOWN;
HeapFree( SystemHeap, 0, change );
}
/****************************************************************************
* FindFirstChangeNotification32A (KERNEL32.248)
*/
HANDLE32 WINAPI FindFirstChangeNotification32A( LPCSTR lpPathName,
BOOL32 bWatchSubtree,
DWORD dwNotifyFilter )
{
CHANGE_OBJECT *change;
struct create_change_notification_request req;
struct create_change_notification_reply reply;
req.subtree = bWatchSubtree;
req.filter = dwNotifyFilter;
CLIENT_SendRequest( REQ_CREATE_CHANGE_NOTIFICATION, -1, 1, &req, sizeof(req) );
CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL );
if (reply.handle == -1) return INVALID_HANDLE_VALUE32;
change = HeapAlloc( SystemHeap, 0, sizeof(CHANGE_OBJECT) );
if (!change)
{
CLIENT_CloseHandle( reply.handle );
return INVALID_HANDLE_VALUE32;
}
change->header.type = K32OBJ_CHANGE;
change->header.refcount = 1;
change->lpPathName = HEAP_strdupA( SystemHeap, 0, lpPathName );
change->bWatchSubtree = bWatchSubtree;
change->dwNotifyFilter = dwNotifyFilter;
change->notify = FALSE;
return HANDLE_Alloc( PROCESS_Current(), &change->header,
STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE /*FIXME*/,
FALSE, reply.handle );
}
/****************************************************************************
* FindFirstChangeNotification32W (KERNEL32.249)
*/
HANDLE32 WINAPI FindFirstChangeNotification32W( LPCWSTR lpPathName,
BOOL32 bWatchSubtree,
DWORD dwNotifyFilter)
{
LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, lpPathName );
HANDLE32 ret = FindFirstChangeNotification32A( nameA, bWatchSubtree,
dwNotifyFilter );
if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
return ret;
}
/****************************************************************************
* FindNextChangeNotification (KERNEL32.252)
*/
BOOL32 WINAPI FindNextChangeNotification( HANDLE32 handle )
{
CHANGE_OBJECT *change;
SYSTEM_LOCK();
if (!(change = (CHANGE_OBJECT *)HANDLE_GetObjPtr( PROCESS_Current(),
handle, K32OBJ_CHANGE,
0 /*FIXME*/, NULL )) )
{
SYSTEM_UNLOCK();
return FALSE;
}
change->notify = FALSE;
K32OBJ_DecCount( &change->header );
SYSTEM_UNLOCK();
return TRUE;
}
/****************************************************************************
* FindCloseChangeNotification (KERNEL32.247)
*/
BOOL32 WINAPI FindCloseChangeNotification( HANDLE32 handle)
{
return CloseHandle( handle );
}