files/change.c

   1 /*
   2  * Win32 file change notification functions
   3  *
   4  * Copyright 1998 Ulrich Weigand
   5  */
   6
   7 #include <assert.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <string.h>
  11 #include <time.h>
  12 #include "winbase.h"
  13 #include "winerror.h"
  14 #include "process.h"
  15 #include "thread.h"
  16 #include "heap.h"
  17 #include "server.h"
  18 #include "debug.h"
  19
  20 /* The change notification object */
  21 typedef struct
  22 {
  23     K32OBJ       header;
  24 } CHANGE_OBJECT;
  25
  26
  27 /****************************************************************************
  28  *              FindFirstChangeNotification32A (KERNEL32.248)
  29  */
  30 HANDLE WINAPI FindFirstChangeNotificationA( LPCSTR lpPathName,
  31                                                 BOOL bWatchSubtree,
  32                                                 DWORD dwNotifyFilter )
  33 {
  34     CHANGE_OBJECT *change;
  35     struct create_change_notification_request req;
  36     struct create_change_notification_reply reply;
  37
  38     req.subtree = bWatchSubtree;
  39     req.filter  = dwNotifyFilter;
  40     CLIENT_SendRequest( REQ_CREATE_CHANGE_NOTIFICATION, -1, 1, &req, sizeof(req) );
  41     CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL );
  42     if (reply.handle == -1) return INVALID_HANDLE_VALUE;
  43
  44     change = HeapAlloc( SystemHeap, 0, sizeof(CHANGE_OBJECT) );
  45     if (!change)
  46     {
  47         CLIENT_CloseHandle( reply.handle );
  48         return INVALID_HANDLE_VALUE;
  49     }
  50     change->header.type = K32OBJ_CHANGE;
  51     change->header.refcount = 1;
  52     return HANDLE_Alloc( PROCESS_Current(), &change->header,
  53                          STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE /*FIXME*/,
  54                          FALSE, reply.handle );
  55 }
  56
  57 /****************************************************************************
  58  *              FindFirstChangeNotification32W (KERNEL32.249)
  59  */
  60 HANDLE WINAPI FindFirstChangeNotificationW( LPCWSTR lpPathName,
  61                                                 BOOL bWatchSubtree,
  62                                                 DWORD dwNotifyFilter)
  63 {
  64     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, lpPathName );
  65     HANDLE ret = FindFirstChangeNotificationA( nameA, bWatchSubtree,
  66                                                           dwNotifyFilter );
  67     if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
  68     return ret;
  69 }
  70
  71 /****************************************************************************
  72  *              FindNextChangeNotification (KERNEL32.252)
  73  */
  74 BOOL WINAPI FindNextChangeNotification( HANDLE handle )
  75 {
  76     if (HANDLE_GetServerHandle( PROCESS_Current(), handle,
  77                                 K32OBJ_FILE, 0 ) == -1)
  78         return FALSE;
  79     /* FIXME: do something */
  80     return TRUE;
  81 }
  82
  83 /****************************************************************************
  84  *              FindCloseChangeNotification (KERNEL32.247)
  85  */
  86 BOOL WINAPI FindCloseChangeNotification( HANDLE handle)
  87 {
  88     return CloseHandle( handle );
  89 }
  90