File.GetAccessControl Metode

Definisi

Ruang nama:

System.IO

Rakitan:

mscorlib.dll

FileSecurity Mendapatkan objek yang merangkum entri daftar kontrol akses (ACL) untuk file tertentu.

Overload

GetAccessControl(String, AccessControlSections)	FileSecurity Mendapatkan objek yang merangkum jenis entri daftar kontrol akses (ACL) yang ditentukan untuk file tertentu.
GetAccessControl(String)	FileSecurity Mendapatkan objek yang merangkum entri daftar kontrol akses (ACL) untuk file tertentu.

Keterangan

GetAccessControl Gunakan metode untuk mengambil entri daftar kontrol akses (ACL) untuk file tertentu.

GetAccessControl(String, AccessControlSections)

FileSecurity Mendapatkan objek yang merangkum jenis entri daftar kontrol akses (ACL) yang ditentukan untuk file tertentu.

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

Parameter

path

String

Jalur ke file yang FileSecurity berisi objek yang menjelaskan informasi daftar kontrol akses (ACL) file.

includeSections

AccessControlSections

Salah AccessControlSections satu nilai yang menentukan jenis informasi daftar kontrol akses (ACL) untuk diterima.

Mengembalikan

FileSecurity

Objek FileSecurity yang merangkum aturan kontrol akses untuk file yang dijelaskan oleh path parameter .

Pengecualian

IOException

Terjadi kesalahan I/O saat membuka file.

SEHException

Parameternya path adalah null.

SystemException

File tidak dapat ditemukan.

UnauthorizedAccessException

Parameter path menentukan file yang bersifat baca-saja.

-atau-

Operasi ini tidak didukung pada platform saat ini.

-atau-

Parameter path menentukan direktori.

-atau-

Pemanggil tidak memiliki izin yang diperlukan.

Keterangan

GetAccessControl Gunakan metode untuk mengambil entri daftar kontrol akses (ACL) untuk file.

ACL menjelaskan individu dan/atau grup yang memiliki, atau tidak memiliki, hak atas tindakan tertentu pada file yang diberikan. Untuk mengetahui informasi selengkapnya, lihat Petunjuk: Menambahkan atau Menghapus Entri Daftar Kontrol Akses.

Di lingkungan NTFS, ReadAttributes dan ReadExtendedAttributes diberikan kepada pengguna jika pengguna memiliki ListDirectory hak pada folder induk. Untuk menolak ReadAttributes dan ReadExtendedAttributes, tolak ListDirectory pada direktori induk.

GetAccessControl(String)

FileSecurity Mendapatkan objek yang merangkum entri daftar kontrol akses (ACL) untuk file tertentu.

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

Parameter

path

String

Jalur ke file yang FileSecurity berisi objek yang menjelaskan informasi daftar kontrol akses (ACL) file.

Mengembalikan

FileSecurity

Objek FileSecurity yang merangkum aturan kontrol akses untuk file yang dijelaskan oleh path parameter .

Pengecualian

IOException

Terjadi kesalahan I/O saat membuka file.

SEHException

Parameternya path adalah null.

SystemException

File tidak dapat ditemukan.

UnauthorizedAccessException

Parameter path menentukan file yang bersifat baca-saja.

-atau-

Operasi ini tidak didukung pada platform saat ini.

-atau-

Parameter path menentukan direktori.

-atau-

Pemanggil tidak memiliki izin yang diperlukan.

Contoh

Contoh kode berikut menggunakan GetAccessControl metode dan SetAccessControl untuk menambahkan lalu menghapus entri daftar kontrol akses (ACL) dari file. Anda harus menyediakan akun pengguna atau grup yang valid untuk menjalankan contoh ini.

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

Keterangan

GetAccessControl Gunakan metode untuk mengambil entri daftar kontrol akses (ACL) untuk file.

ACL menjelaskan individu dan/atau grup yang memiliki, atau tidak memiliki, hak atas tindakan tertentu pada file yang diberikan. Untuk mengetahui informasi selengkapnya, lihat Petunjuk: Menambahkan atau Menghapus Entri Daftar Kontrol Akses.

Di lingkungan NTFS, ReadAttributes dan ReadExtendedAttributes diberikan kepada pengguna jika pengguna memiliki ListDirectory hak pada folder induk. Untuk menolak ReadAttributes dan ReadExtendedAttributes, tolak ListDirectory pada direktori induk.