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SemaphoreRights Enum

Definisi

Menentukan hak kontrol akses yang dapat diterapkan ke objek semaphore sistem bernama.

Enumerasi ini mendukung kombinasi bitwise dari nilai yang termasuk di dalamnya.

public enum class SemaphoreRights
[System.Flags]
public enum SemaphoreRights
[System.Flags]
[System.Security.SecurityCritical]
public enum SemaphoreRights
[System.Flags]
[System.Runtime.InteropServices.ComVisible(false)]
public enum SemaphoreRights
[<System.Flags>]
type SemaphoreRights = 
[<System.Flags>]
[<System.Security.SecurityCritical>]
type SemaphoreRights = 
[<System.Flags>]
[<System.Runtime.InteropServices.ComVisible(false)>]
type SemaphoreRights = 
Public Enum SemaphoreRights
Warisan
SemaphoreRights
Atribut

Bidang

Nama Nilai Deskripsi
Modify 2

Hak untuk melepaskan semaphore bernama.

Delete 65536

Hak untuk menghapus semaphore bernama.

ReadPermissions 131072

Hak untuk membuka dan menyalin aturan akses dan aturan audit untuk semaphore bernama.

ChangePermissions 262144

Hak untuk mengubah aturan keamanan dan audit yang terkait dengan semaphore bernama.

TakeOwnership 524288

Hak untuk mengubah pemilik semaphore bernama.

Synchronize 1048576

Hak untuk menunggu di semaphore bernama.

FullControl 2031619

Hak untuk memberikan kontrol penuh atas semaphore bernama, dan untuk memodifikasi aturan akses dan aturan auditnya.

Contoh

Contoh kode berikut menunjukkan penggunaan SemaphoreRights nilai saat membuat dan menggunakan SemaphoreAccessRule objek. Contoh membuat SemaphoreSecurity objek, menambahkan aturan yang mengizinkan dan menolak berbagai hak untuk pengguna saat ini, dan menampilkan pasangan aturan yang dihasilkan. Contoh kemudian memungkinkan hak baru untuk pengguna saat ini dan menampilkan hasilnya, yang menunjukkan bahwa hak baru digabungkan dengan aturan yang ada AccessControlType.Allow .

Nota

Contoh ini tidak melampirkan objek keamanan ke Semaphore objek; lihat SemaphoreSecurity, Semaphore.GetAccessControl metode, dan Semaphore.SetAccessControl.

using System;
using System.Threading;
using System.Security.AccessControl;
using System.Security.Principal;

public class Example
{
    public static void Main()
    {
        // Create a string representing the current user.
        string user = Environment.UserDomainName + "\\" + 
            Environment.UserName;

        // Create a security object that grants no access.
        SemaphoreSecurity mSec = new SemaphoreSecurity();

        // Add a rule that grants the current user the 
        // right to enter or release the semaphore.
        SemaphoreAccessRule rule = new SemaphoreAccessRule(user, 
            SemaphoreRights.Synchronize | SemaphoreRights.Modify, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        // Add a rule that denies the current user the 
        // right to change permissions on the semaphore.
        rule = new SemaphoreAccessRule(user, 
            SemaphoreRights.ChangePermissions, 
            AccessControlType.Deny);
        mSec.AddAccessRule(rule);

        // Display the rules in the security object.
        ShowSecurity(mSec);

        // Add a rule that allows the current user the 
        // right to read permissions on the semaphore. This rule
        // is merged with the existing Allow rule.
        rule = new SemaphoreAccessRule(user, 
            SemaphoreRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        ShowSecurity(mSec);
    }

    private static void ShowSecurity(SemaphoreSecurity security)
    {
        Console.WriteLine("\r\nCurrent access rules:\r\n");

        foreach(SemaphoreAccessRule ar in 
            security.GetAccessRules(true, true, typeof(NTAccount)))
        {
            Console.WriteLine("        User: {0}", ar.IdentityReference);
            Console.WriteLine("        Type: {0}", ar.AccessControlType);
            Console.WriteLine("      Rights: {0}", ar.SemaphoreRights);
            Console.WriteLine();
        }
    }
}

/*This code example produces output similar to following:

Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: Modify, Synchronize


Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: Modify, ReadPermissions, Synchronize
 */
Imports System.Threading
Imports System.Security.AccessControl
Imports System.Security.Principal

Public Class Example

    Public Shared Sub Main()

        ' Create a string representing the current user.
        Dim user As String = Environment.UserDomainName _ 
            & "\" & Environment.UserName

        ' Create a security object that grants no access.
        Dim mSec As New SemaphoreSecurity()

        ' Add a rule that grants the current user the 
        ' right to enter or release the semaphore.
        Dim rule As New SemaphoreAccessRule(user, _
            SemaphoreRights.Synchronize _
            Or SemaphoreRights.Modify, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ' Add a rule that denies the current user the 
        ' right to change permissions on the semaphore.
        rule = New SemaphoreAccessRule(user, _
            SemaphoreRights.ChangePermissions, _
            AccessControlType.Deny)
        mSec.AddAccessRule(rule)

        ' Display the rules in the security object.
        ShowSecurity(mSec)

        ' Add a rule that allows the current user the 
        ' right to read permissions on the semaphore. This 
        ' rule is merged with the existing Allow rule.
        rule = New SemaphoreAccessRule(user, _
            SemaphoreRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ShowSecurity(mSec)

    End Sub 

    Private Shared Sub ShowSecurity(ByVal security As SemaphoreSecurity)
        Console.WriteLine(vbCrLf & "Current access rules:" & vbCrLf)

        For Each ar As SemaphoreAccessRule In _
            security.GetAccessRules(True, True, GetType(NTAccount))

            Console.WriteLine("        User: {0}", ar.IdentityReference)
            Console.WriteLine("        Type: {0}", ar.AccessControlType)
            Console.WriteLine("      Rights: {0}", ar.SemaphoreRights)
            Console.WriteLine()
        Next

    End Sub
End Class 

'This code example produces output similar to following:
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: Modify, Synchronize
'
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: Modify, ReadPermissions, Synchronize

Keterangan

Nota

Tipe ini hanya didukung pada Windows.

SemaphoreRights Gunakan enumerasi untuk menentukan hak kontrol akses saat Anda membuat SemaphoreSecurity objek. Untuk menerapkan hak akses ke semaphore sistem bernama, gunakan SemaphoreSecurity objek dengan Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity) konstruktor dan Semaphore.SetAccessControl metode .

Untuk nilai numerik hak akses Windows yang mendasar, lihat Sinkronisasi Keamanan Objek dan Hak Akses (Windows).

Berlaku untuk

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