dlls/kernel/change.c

   1 /*
   2  * Win32 file change notification functions
   3  *
   4  * Copyright 1998 Ulrich Weigand
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "winbase.h"
  27 #include "winerror.h"
  28 #include "wine/server.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(file);
  32
  33 /****************************************************************************
  34  *              FindFirstChangeNotificationA (KERNEL32.@)
  35  */
  36 HANDLE WINAPI FindFirstChangeNotificationA( LPCSTR lpPathName, BOOL bWatchSubtree,
  37                                             DWORD dwNotifyFilter )
  38 {
  39     HANDLE file, ret = INVALID_HANDLE_VALUE;
  40
  41     TRACE( "%s %d %lx\n", debugstr_a(lpPathName), bWatchSubtree, dwNotifyFilter );
  42
  43     if ((file = CreateFileA( lpPathName, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
  44                              OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0 )) == INVALID_HANDLE_VALUE)
  45         return INVALID_HANDLE_VALUE;
  46
  47     SERVER_START_REQ( create_change_notification )
  48     {
  49         req->handle  = file;
  50         req->subtree = bWatchSubtree;
  51         req->filter  = dwNotifyFilter;
  52         if (!wine_server_call_err( req )) ret = reply->handle;
  53     }
  54     SERVER_END_REQ;
  55     CloseHandle( file );
  56     return ret;
  57 }
  58
  59 /****************************************************************************
  60  *              FindFirstChangeNotificationW (KERNEL32.@)
  61  */
  62 HANDLE WINAPI FindFirstChangeNotificationW( LPCWSTR lpPathName, BOOL bWatchSubtree,
  63                                             DWORD dwNotifyFilter)
  64 {
  65     HANDLE file, ret = INVALID_HANDLE_VALUE;
  66
  67     TRACE( "%s %d %lx\n", debugstr_w(lpPathName), bWatchSubtree, dwNotifyFilter );
  68
  69     if ((file = CreateFileW( lpPathName, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
  70                              OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0 )) == INVALID_HANDLE_VALUE)
  71         return INVALID_HANDLE_VALUE;
  72
  73     SERVER_START_REQ( create_change_notification )
  74     {
  75         req->handle  = file;
  76         req->subtree = bWatchSubtree;
  77         req->filter  = dwNotifyFilter;
  78         if (!wine_server_call_err( req )) ret = reply->handle;
  79     }
  80     SERVER_END_REQ;
  81     CloseHandle( file );
  82     return ret;
  83 }
  84
  85 /****************************************************************************
  86  *              FindNextChangeNotification (KERNEL32.@)
  87  */
  88 BOOL WINAPI FindNextChangeNotification( HANDLE handle )
  89 {
  90     BOOL ret;
  91
  92     TRACE("%p\n",handle);
  93
  94     SERVER_START_REQ( next_change_notification )
  95     {
  96         req->handle = handle;
  97         ret = !wine_server_call_err( req );
  98     }
  99     SERVER_END_REQ;
 100     return ret;
 101 }
 102
 103 /****************************************************************************
 104  *              FindCloseChangeNotification (KERNEL32.@)
 105  */
 106 BOOL WINAPI FindCloseChangeNotification( HANDLE handle )
 107 {
 108     return CloseHandle( handle );
 109 }