lib/kernel32/file/cnotify.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/kernel32/file/find.c
   6  * PURPOSE:         Find functions
   7  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   8  * UPDATE HISTORY:
   9  *                  Created 01/11/98
  10  */
  11
  12 #include <k32.h>
  13
  14 #define NDEBUG
  15 #include <kernel32/kernel32.h>
  16
  17 /*
  18  * @implemented
  19  */
  20 WINBOOL STDCALL
  21 FindCloseChangeNotification (HANDLE hChangeHandle)
  22 {
  23    NtClose(hChangeHandle);
  24    return TRUE;
  25 }
  26
  27
  28 /*
  29  * @implemented
  30  */
  31 HANDLE
  32 STDCALL
  33 FindFirstChangeNotificationA (
  34         LPCSTR  lpPathName,
  35         WINBOOL bWatchSubtree,
  36         DWORD   dwNotifyFilter
  37         )
  38 {
  39         UNICODE_STRING PathNameU;
  40         ANSI_STRING PathName;
  41         HANDLE hNotify;
  42
  43         RtlInitAnsiString (&PathName,
  44                            (LPSTR)lpPathName);
  45
  46         /* convert ansi (or oem) string to unicode */
  47         if (bIsFileApiAnsi)
  48    {
  49                 RtlAnsiStringToUnicodeString (&PathNameU,
  50                                               &PathName,
  51                                               TRUE);
  52    }
  53         else
  54    {
  55                 RtlOemStringToUnicodeString (&PathNameU,
  56                                              &PathName,
  57                                              TRUE);
  58    }
  59
  60    hNotify = FindFirstChangeNotificationW (PathNameU.Buffer,
  61                                                 bWatchSubtree,
  62                                                 dwNotifyFilter);
  63
  64    RtlFreeUnicodeString(&PathNameU);
  65
  66    return hNotify;
  67 }
  68
  69
  70 /*
  71  * @implemented
  72  */
  73 HANDLE
  74 STDCALL
  75 FindFirstChangeNotificationW (
  76         LPCWSTR lpPathName,
  77         WINBOOL bWatchSubtree,
  78         DWORD   dwNotifyFilter
  79         )
  80 {
  81    NTSTATUS Status;
  82    UNICODE_STRING NtPathU;
  83    IO_STATUS_BLOCK IoStatus;
  84    OBJECT_ATTRIBUTES ObjectAttributes;
  85    HANDLE hDir;
  86
  87    /*
  88    RtlDosPathNameToNtPathName takes a fully qualified file name "C:\Projects\LoadLibrary\Debug\TestDll.dll"
  89    and returns something like "\??\C:\Projects\LoadLibrary\Debug\TestDll.dll."
  90    If the file name cannot be interpreted, then the routine returns STATUS_OBJECT_PATH_SYNTAX_BAD and
  91    ends execution.
  92    */
  93
  94    if (!RtlDosPathNameToNtPathName_U ((LPWSTR)lpPathName,
  95                                           &NtPathU,
  96                                           NULL,
  97                                           NULL))
  98    {
  99       SetLastErrorByStatus(STATUS_OBJECT_PATH_SYNTAX_BAD);
 100       return INVALID_HANDLE_VALUE;
 101    }
 102
 103    InitializeObjectAttributes (&ObjectAttributes,
 104                                &NtPathU,
 105                                0,
 106                                NULL,
 107                                NULL);
 108
 109    Status = NtOpenFile (&hDir,
 110                         SYNCHRONIZE|FILE_LIST_DIRECTORY,
 111                         &ObjectAttributes,
 112                         &IoStatus,
 113                         FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 114                         FILE_DIRECTORY_FILE);
 115
 116    if (!NT_SUCCESS(Status))
 117    {
 118       SetLastErrorByStatus(Status);
 119       return INVALID_HANDLE_VALUE;
 120    }
 121
 122    Status = NtNotifyChangeDirectoryFile(hDir,
 123                                         NULL,
 124                                         NULL,
 125                                         NULL,
 126                                         &IoStatus,
 127                                         NULL,//Buffer,
 128                                         0,//BufferLength,
 129                                         dwNotifyFilter,
 130                                         bWatchSubtree);
 131    if (!NT_SUCCESS(Status))
 132    {
 133       SetLastErrorByStatus(Status);
 134       return INVALID_HANDLE_VALUE;
 135    }
 136
 137    return hDir;
 138 }
 139
 140
 141 /*
 142  * @implemented
 143  */
 144 WINBOOL
 145 STDCALL
 146 FindNextChangeNotification (
 147         HANDLE  hChangeHandle
 148         )
 149 {
 150    IO_STATUS_BLOCK IoStatus;
 151    NTSTATUS Status;
 152
 153    Status = NtNotifyChangeDirectoryFile(hChangeHandle,
 154                                         NULL,
 155                                         NULL,
 156                                         NULL,
 157                                         &IoStatus,
 158                                         NULL,//Buffer,
 159                                         0,//BufferLength,
 160                                         FILE_NOTIFY_CHANGE_SECURITY,//meaningless for subsequent calls, but must contain a valid flag(s)
 161                                         0//meaningless for subsequent calls
 162                                         );
 163    if (!NT_SUCCESS(Status))
 164    {
 165       SetLastErrorByStatus(Status);
 166       return FALSE;
 167    }
 168
 169    return TRUE;
 170 }
 171
 172 /* EOF */