Finishes the use of _WinAPI_BackupRead() on the handle.
#Include <WinAPIEx.au3>
_WinAPI_BackupRead ( ByRef $pContext )
| $pContext | A pointer to an internal data structure used by _WinAPI_BackupRead() function to maintain context information during a backup operation. |
| 成功: | 返回 1. |
| 失败: | 返回 0 并设置 @error 标志为非 0 值. |
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#Include <APIConstants.au3>
#Include <WinAPIEx.au3>
Opt('MustDeclareVars', 1)
Global Const $sFile = @ScriptFullPath
Global $aAdjust, $aPrivileges[2] = [$SE_BACKUP_NAME, $SE_RESTORE_NAME]
Global $Bytes = 4096 + FileGetSize($sFile)
Global $hFile, $pBuffer, $pContext
; Enable "SeBackupPrivilege" and "SeRestorePrivilege" privileges to perform backup and restore operation
$hToken = _WinAPI_OpenProcessToken(BitOR($TOKEN_ADJUST_PRIVILEGES, $TOKEN_QUERY))
_WinAPI_AdjustTokenPrivileges($hToken, $aPrivileges, $SE_PRIVILEGE_ENABLED, $aAdjust)
If @error Or @extended Then
MsgBox(16, 'Error', 'You do not have the required privileges.')
Exit
EndIf
; Create a memory buffer where to store the backup data
$pBuffer = _WinAPI_CreateBuffer($Bytes)
; Back up a file, including the security information
$pContext = 0
$hFile = _WinAPI_CreateFileEx($sFile, $OPEN_EXISTING, $GENERIC_READ)
_WinAPI_BackupRead($hFile, $pBuffer, $Bytes, $Bytes, $pContext, 1)
If @error Then
MsgBox(16, 'Error', 'Unable to back up a file.')
Exit
EndIf
_WinAPI_BackupReadAbort($pContext)
_WinAPI_CloseHandle($hFile)
; Restore a file (.bak) and the ACL data
$pContext = 0
$hFile = _WinAPI_CreateFileEx(_WinAPI_PathRenameExtension($sFile, '.bak'), $CREATE_ALWAYS, BitOR($GENERIC_WRITE, $WRITE_DAC, $WRITE_OWNER))
_WinAPI_BackupWrite($hFile, $pBuffer, $Bytes, $Bytes, $pContext, 1)
If @error Then
MsgBox(16, 'Error', 'Unable to restore a file.')
Exit
EndIf
_WinAPI_BackupWriteAbort($pContext)
_WinAPI_CloseHandle($hFile)
; Free the used memory
_WinAPI_FreeMemory($pBuffer)
; Restore "SeBackupPrivilege" and "SeRestorePrivilege" privileges by default
_WinAPI_AdjustTokenPrivileges($hToken, $aAdjust, 0, $aAdjust)
_WinAPI_CloseHandle($hToken)