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 "windows.h"
  13 #include "winbase.h"
  14 #include "winerror.h"
  15 #include "process.h"
  16 #include "thread.h"
  17 #include "heap.h"
  18 #include "server.h"
  19 #include "debug.h"
  20
  21 /* The change notification object */
  22 typedef struct
  23 {
  24     K32OBJ       header;
  25 } CHANGE_OBJECT;
  26
  27
  28 /****************************************************************************
  29  *              FindFirstChangeNotification32A (KERNEL32.248)
  30  */
  31 HANDLE32 WINAPI FindFirstChangeNotification32A( LPCSTR lpPathName,
  32                                                 BOOL32 bWatchSubtree,
  33                                                 DWORD dwNotifyFilter )
  34 {
  35     CHANGE_OBJECT *change;
  36     struct create_change_notification_request req;
  37     struct create_change_notification_reply reply;
  38
  39     req.subtree = bWatchSubtree;
  40     req.filter  = dwNotifyFilter;
  41     CLIENT_SendRequest( REQ_CREATE_CHANGE_NOTIFICATION, -1, 1, &req, sizeof(req) );
  42     CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL );
  43     if (reply.handle == -1) return INVALID_HANDLE_VALUE32;
  44
  45     change = HeapAlloc( SystemHeap, 0, sizeof(CHANGE_OBJECT) );
  46     if (!change)
  47     {
  48         CLIENT_CloseHandle( reply.handle );
  49         return INVALID_HANDLE_VALUE32;
  50     }
  51     change->header.type = K32OBJ_CHANGE;
  52     change->header.refcount = 1;
  53     return HANDLE_Alloc( PROCESS_Current(), &change->header,
  54                          STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE /*FIXME*/,
  55                          FALSE, reply.handle );
  56 }
  57
  58 /****************************************************************************
  59  *              FindFirstChangeNotification32W (KERNEL32.249)
  60  */
  61 HANDLE32 WINAPI FindFirstChangeNotification32W( LPCWSTR lpPathName,
  62                                                 BOOL32 bWatchSubtree,
  63                                                 DWORD dwNotifyFilter)
  64 {
  65     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, lpPathName );
  66     HANDLE32 ret = FindFirstChangeNotification32A( nameA, bWatchSubtree,
  67                                                           dwNotifyFilter );
  68     if (nameA) HeapFree( GetProcessHeap(), 0, nameA );
  69     return ret;
  70 }
  71
  72 /****************************************************************************
  73  *              FindNextChangeNotification (KERNEL32.252)
  74  */
  75 BOOL32 WINAPI FindNextChangeNotification( HANDLE32 handle )
  76 {
  77     if (HANDLE_GetServerHandle( PROCESS_Current(), handle,
  78                                 K32OBJ_FILE, 0 ) == -1)
  79         return FALSE;
  80     /* FIXME: do something */
  81     return TRUE;
  82 }
  83
  84 /****************************************************************************
  85  *              FindCloseChangeNotification (KERNEL32.247)
  86  */
  87 BOOL32 WINAPI FindCloseChangeNotification( HANDLE32 handle)
  88 {
  89     return CloseHandle( handle );
  90 }
  91