使用WMI修改文件文件夹的NTFS权限, 代码：
strUser = "guests"
strPath = "D:\\abc.txt"
RetVal = AddPermission(strUser,strPath,"R",True)
'-------------------------------------------------------------------------
'用于给文件和文件夹添加一条权限设置.返回值: 0-成功,1-账户不存在,2-路径不存在
'strUser表示用户名或组名
'strPath表示文件夹路径或文件路径
'strAccess表示允许权限设置的字符串,字符串中带有相应字母表示允许相应权限: R-读,C-读写,F-完全控制
'blInherit表示是否继承父目录权限.True为继承,False为不继承
Function AddPermission(strUser,strPath,strAccess,blInherit)
Set objWMIService = GetObject("winmgmts:\\.\root\Cimv2")
Set fso = CreateObject("Scripting.FileSystemObject")
'得到Win32_SID并判断用户/组/内置账户是否存在
Set colUsers = objWMIService.ExecQuery("SELECT * FROM Win32_Account WHERE Name='"&strUser&"'")
If colUsers.count<>0 Then
For Each objUser In colUsers
strSID = objUser.SID
Next
Else
AddPermission = 1
Exit Function
End If
Set objSID = objWMIService.Get("Win32_SID.SID='"&strSID&"'")
'判断文件/文件夹是否存在
pathType = ""
If fso.fileExists(strPath) Then pathType = "FILE"
If fso.folderExists(strPath) Then pathType = "FOLDER"
If pathType = "" Then
AddPermission = 2
Exit Function
End If
'设置Trustee
Set objTrustee = objWMIService.Get("Win32_Trustee").SpawnInstance_()
objTrustee.Domain = objSID.ReferencedDomainName
objTrustee.Name = objSID.AccountName
objTrustee.SID = objSID.BinaryRepresentation
objTrustee.SidLength = objSID.SidLength
objTrustee.SIDString = objSID.Sid
'设置ACE
Set objNewACE = objWMIService.Get("Win32_ACE").SpawnInstance_()
objNewACE.Trustee = objTrustee
objNewACE.AceType = 0
If InStr(UCase(strAccess),"R") > 0 Then objNewACE.AccessMask = 1179817
If InStr(UCase(strAccess),"C") > 0 Then objNewACE.AccessMask = 1245631
If InStr(UCase(strAccess),"F") > 0 Then objNewACE.AccessMask = 2032127
If pathType = "FILE" And blInherit = True Then objNewACE.AceFlags = 16
If pathType = "FILE" And blInherit = False Then objNewACE.AceFlags = 0
If pathType = "FOLDER" And blInherit = True Then objNewACE.AceFlags = 19
If pathType = "FOLDER" And blInherit = False Then objNewACE.AceFlags = 3
'设置SD
Set objFileSecSetting = objWMIService.Get("Win32_LogicalFileSecuritySetting.Path='"&strPath&"'")
Call objFileSecSetting.GetSecurityDescriptor(objSD)
blSE_DACL_AUTO_INHERITED = True
If (objSD.ControlFlags And &H400) = 0 Then
blSE_DACL_AUTO_INHERITED = False
objSD.ControlFlags = (objSD.ControlFlags Or &H400)
'自动继承位置位,如果是刚创建的目录或文件该位是不置位的,需要置位
End If
If blInherit = True Then
objSD.ControlFlags = (objSD.ControlFlags And &HEFFF)
'阻止继承复位
Else
objSD.ControlFlags = (objSD.ControlFlags Or &H1400)
'阻止继承位置位,自动继承位置位
End If
objOldDacl = objSD.Dacl
ReDim objNewDacl(0)
Set objNewDacl(0) = objNewACE
If IsArray(objOldDacl) Then
'权限为空时objOldDacl不是集合不可遍历
For Each objACE In objOldDacl
If (blSE_DACL_AUTO_INHERITED=False And blInherit=True) Or ((objACE.AceFlags And 16)>0 And (blInherit=True) Or (LCase(objACE.Trustee.Name)=LCase(strUser))) Then
'Do nothing
'当自动继承位置位为0时即使时继承的权限也会显示为非继承,这时所有权限都不设置
'当自动继承位置位为0时,在继承父目录权限的情况下不设置继承的权限.账户和需要加权限的账户一样时不设置权限
Else
Ubd = UBound(objNewDacl)
ReDim preserve objNewDacl(Ubd+1)
Set objNewDacl(Ubd+1) = objACE
End If
Next
End If
objSD.Dacl = objNewDacl
'提交设置修改
Call objFileSecSetting.SetSecurityDescriptor(objSD)
AddPermission = 0
Set fso = Nothing
End Function