File.GetAccessControl 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
取得 FileSecurity 物件,該物件封裝指定檔案的存取控制清單 (ACL) 項目。
多載
GetAccessControl(String, AccessControlSections) |
取得 FileSecurity 物件,該物件會封裝特定檔案之指定類型的存取控制清單 (ACL) 項目。 |
GetAccessControl(String) |
取得 FileSecurity 物件,該物件封裝指定檔案的存取控制清單 (ACL) 項目。 |
備註
GetAccessControl使用方法來擷取指定檔案的訪問控制清單 (ACL) 專案。
GetAccessControl(String, AccessControlSections)
取得 FileSecurity 物件,該物件會封裝特定檔案之指定類型的存取控制清單 (ACL) 項目。
public:
static System::Security::AccessControl::FileSecurity ^ GetAccessControl(System::String ^ path, System::Security::AccessControl::AccessControlSections includeSections);
public static System.Security.AccessControl.FileSecurity GetAccessControl (string path, System.Security.AccessControl.AccessControlSections includeSections);
static member GetAccessControl : string * System.Security.AccessControl.AccessControlSections -> System.Security.AccessControl.FileSecurity
Public Shared Function GetAccessControl (path As String, includeSections As AccessControlSections) As FileSecurity
參數
- path
- String
檔案的路徑,包含 FileSecurity 物件,並描述檔案的存取控制清單 (ACL) 資訊。
- includeSections
- AccessControlSections
其中一個 AccessControlSections 值,指定要接收的存取控制清單 (ACL) 資訊之類型。
傳回
FileSecurity 物件,該物件封裝 path
參數所描述之檔案的存取控制規則。
例外狀況
開啟檔案時發生 I/O 錯誤。
path
參數為 null
。
找不到檔案。
備註
GetAccessControl使用 方法來擷取檔案的 ACL) 項目 (訪問控制清單。
ACL 描述具有或沒有指定檔案上特定動作許可權的個人和/或群組。 如需詳細資訊,請參閱如何:新增或移除存取控制清單項目。
在NTFS環境中,如果使用者具有ListDirectory父資料夾的許可權,ReadAttributes則會ReadExtendedAttributes授與使用者。 若要拒絕 ReadAttributes 和 ReadExtendedAttributes,請在父目錄上拒絕 ListDirectory 。
適用於
GetAccessControl(String)
取得 FileSecurity 物件,該物件封裝指定檔案的存取控制清單 (ACL) 項目。
public:
static System::Security::AccessControl::FileSecurity ^ GetAccessControl(System::String ^ path);
public static System.Security.AccessControl.FileSecurity GetAccessControl (string path);
static member GetAccessControl : string -> System.Security.AccessControl.FileSecurity
Public Shared Function GetAccessControl (path As String) As FileSecurity
參數
- path
- String
檔案的路徑,包含 FileSecurity 物件,並描述檔案的存取控制清單 (ACL) 資訊。
傳回
FileSecurity 物件,該物件封裝 path
參數所描述之檔案的存取控制規則。
例外狀況
開啟檔案時發生 I/O 錯誤。
path
參數為 null
。
找不到檔案。
範例
下列程式代碼範例會使用 GetAccessControl 和 SetAccessControl 方法,從檔案中新增和移除訪問控制清單 (ACL) 專案。 您必須提供有效的使用者或群組帳戶,才能執行這個範例。
using namespace System;
using namespace System::IO;
using namespace System::Security::AccessControl;
// Adds an ACL entry on the specified file for the specified account.
void AddFileSecurity(String^ fileName, String^ account,
FileSystemRights rights, AccessControlType controlType)
{
// Get a FileSecurity object that represents the
// current security settings.
FileSecurity^ fSecurity = File::GetAccessControl(fileName);
// Add the FileSystemAccessRule to the security settings.
fSecurity->AddAccessRule(gcnew FileSystemAccessRule
(account,rights, controlType));
// Set the new access settings.
File::SetAccessControl(fileName, fSecurity);
}
// Removes an ACL entry on the specified file for the specified account.
void RemoveFileSecurity(String^ fileName, String^ account,
FileSystemRights rights, AccessControlType controlType)
{
// Get a FileSecurity object that represents the
// current security settings.
FileSecurity^ fSecurity = File::GetAccessControl(fileName);
// Remove the FileSystemAccessRule from the security settings.
fSecurity->RemoveAccessRule(gcnew FileSystemAccessRule
(account,rights, controlType));
// Set the new access settings.
File::SetAccessControl(fileName, fSecurity);
}
int main()
{
try
{
String^ fileName = "test.xml";
Console::WriteLine("Adding access control entry for " + fileName);
// Add the access control entry to the file.
AddFileSecurity(fileName, "MYDOMAIN\\MyAccount",
FileSystemRights::ReadData, AccessControlType::Allow);
Console::WriteLine("Removing access control entry from " + fileName);
// Remove the access control entry from the file.
RemoveFileSecurity(fileName, "MYDOMAIN\\MyAccount",
FileSystemRights::ReadData, AccessControlType::Allow);
Console::WriteLine("Done.");
}
catch (Exception^ ex)
{
Console::WriteLine(ex->Message);
}
}
using System;
using System.IO;
using System.Security.AccessControl;
namespace FileSystemExample
{
class FileExample
{
public static void Main()
{
try
{
string fileName = "test.xml";
Console.WriteLine("Adding access control entry for "
+ fileName);
// Add the access control entry to the file.
AddFileSecurity(fileName, @"DomainName\AccountName",
FileSystemRights.ReadData, AccessControlType.Allow);
Console.WriteLine("Removing access control entry from "
+ fileName);
// Remove the access control entry from the file.
RemoveFileSecurity(fileName, @"DomainName\AccountName",
FileSystemRights.ReadData, AccessControlType.Allow);
Console.WriteLine("Done.");
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
// Adds an ACL entry on the specified file for the specified account.
public static void AddFileSecurity(string fileName, string account,
FileSystemRights rights, AccessControlType controlType)
{
// Get a FileSecurity object that represents the
// current security settings.
FileSecurity fSecurity = File.GetAccessControl(fileName);
// Add the FileSystemAccessRule to the security settings.
fSecurity.AddAccessRule(new FileSystemAccessRule(account,
rights, controlType));
// Set the new access settings.
File.SetAccessControl(fileName, fSecurity);
}
// Removes an ACL entry on the specified file for the specified account.
public static void RemoveFileSecurity(string fileName, string account,
FileSystemRights rights, AccessControlType controlType)
{
// Get a FileSecurity object that represents the
// current security settings.
FileSecurity fSecurity = File.GetAccessControl(fileName);
// Remove the FileSystemAccessRule from the security settings.
fSecurity.RemoveAccessRule(new FileSystemAccessRule(account,
rights, controlType));
// Set the new access settings.
File.SetAccessControl(fileName, fSecurity);
}
}
}
open System.IO
open System.Security.AccessControl
// Adds an ACL entry on the specified file for the specified account.
let addFileSecurity fileName (account: string) rights controlType =
// Get a FileSecurity object that represents the
// current security settings.
let fSecurity = File.GetAccessControl fileName
// Add the FileSystemAccessRule to the security settings.
FileSystemAccessRule(account, rights, controlType)
|> fSecurity.AddAccessRule
// Set the new access settings.
File.SetAccessControl(fileName, fSecurity)
// Removes an ACL entry on the specified file for the specified account.
let removeFileSecurity fileName (account: string) rights controlType =
// Get a FileSecurity object that represents the
// current security settings.
let fSecurity = File.GetAccessControl fileName
// Remove the FileSystemAccessRule from the security settings.
fSecurity.RemoveAccessRule(FileSystemAccessRule(account, rights, controlType))
|> ignore
// Set the new access settings.
File.SetAccessControl(fileName, fSecurity)
let fileName = "test.xml"
printfn $"Adding access control entry for {fileName}"
// Add the access control entry to the file.
addFileSecurity fileName @"DomainName\AccountName" FileSystemRights.ReadData AccessControlType.Allow
printfn $"Removing access control entry from {fileName}"
// Remove the access control entry from the file.
removeFileSecurity fileName @"DomainName\AccountName" FileSystemRights.ReadData AccessControlType.Allow
printfn "Done."
Imports System.IO
Imports System.Security.AccessControl
Module FileExample
Sub Main()
Try
Dim fileName As String = "test.xml"
Console.WriteLine("Adding access control entry for " & fileName)
' Add the access control entry to the file.
AddFileSecurity(fileName, "DomainName\AccountName", _
FileSystemRights.ReadData, AccessControlType.Allow)
Console.WriteLine("Removing access control entry from " & fileName)
' Remove the access control entry from the file.
RemoveFileSecurity(fileName, "DomainName\AccountName", _
FileSystemRights.ReadData, AccessControlType.Allow)
Console.WriteLine("Done.")
Catch e As Exception
Console.WriteLine(e)
End Try
End Sub
' Adds an ACL entry on the specified file for the specified account.
Sub AddFileSecurity(ByVal fileName As String, ByVal account As String, _
ByVal rights As FileSystemRights, ByVal controlType As AccessControlType)
' Get a FileSecurity object that represents the
' current security settings.
Dim fSecurity As FileSecurity = File.GetAccessControl(fileName)
' Add the FileSystemAccessRule to the security settings.
Dim accessRule As FileSystemAccessRule = _
New FileSystemAccessRule(account, rights, controlType)
fSecurity.AddAccessRule(accessRule)
' Set the new access settings.
File.SetAccessControl(fileName, fSecurity)
End Sub
' Removes an ACL entry on the specified file for the specified account.
Sub RemoveFileSecurity(ByVal fileName As String, ByVal account As String, _
ByVal rights As FileSystemRights, ByVal controlType As AccessControlType)
' Get a FileSecurity object that represents the
' current security settings.
Dim fSecurity As FileSecurity = File.GetAccessControl(fileName)
' Remove the FileSystemAccessRule from the security settings.
fSecurity.RemoveAccessRule(New FileSystemAccessRule(account, _
rights, controlType))
' Set the new access settings.
File.SetAccessControl(fileName, fSecurity)
End Sub
End Module
備註
GetAccessControl使用 方法來擷取檔案的 ACL) 項目 (訪問控制清單。
ACL 描述具有或沒有指定檔案上特定動作許可權的個人和/或群組。 如需詳細資訊,請參閱如何:新增或移除存取控制清單項目。
在NTFS環境中,如果使用者具有ListDirectory父資料夾的許可權,ReadAttributes則會ReadExtendedAttributes授與使用者。 若要拒絕 ReadAttributes 和 ReadExtendedAttributes,請在父目錄上拒絕 ListDirectory 。
適用於
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