使用WMI修改文件文件夹的NTFS权限, 代码：

复制代码 代码如下:

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:.rootCimv2")

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