MutexAccessRule.MutexRights Özellik

Tanım

Ad Alanı:

System.Security.AccessControl

Bütünleştirilmiş Kod:

System.Threading.AccessControl.dll

Paket:

System.Threading.AccessControl v9.0.0-preview.5.24306.7

Kaynak:

MutexSecurity.cs

Erişim kuralı tarafından izin verilen veya reddedilen hakları alır.

public:
 property System::Security::AccessControl::MutexRights MutexRights { System::Security::AccessControl::MutexRights get(); };

public System.Security.AccessControl.MutexRights MutexRights { get; }

member this.MutexRights : System.Security.AccessControl.MutexRights

Public ReadOnly Property MutexRights As MutexRights

Özellik Değeri

MutexRights

Erişim kuralı tarafından izin verilen veya reddedilen hakları gösteren değerlerin bit düzeyinde birleşimi MutexRights .

Örnekler

Aşağıdaki kod örneği, bir nesnede MutexRights yer alan MutexSecurity kurallar kümesindeki hakları görüntülemek için özelliğinin kullanımını gösterir. Örnek bir MutexSecurity nesne oluşturur, geçerli kullanıcı için çeşitli haklara izin veren ve reddeden kurallar ekler ve sonuçta elde edilen kural çiftini görüntüler. Örnek daha sonra geçerli kullanıcı için yeni haklara izin verir ve yeni hakların mevcut Allow kuralla birleştirildiğini gösteren sonucu görüntüler.

Not

Bu örnek, güvenlik nesnesini bir Mutex nesneye eklemez. Güvenlik nesneleri ekleyen örnekler ve Mutex.SetAccessControliçinde Mutex.GetAccessControl bulunabilir.

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.
        MutexSecurity mSec = new MutexSecurity();

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

        // Add a rule that denies the current user the 
        // right to change permissions on the mutex.
        rule = new MutexAccessRule(user, 
            MutexRights.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 mutex. This rule
        // is merged with the existing Allow rule.
        rule = new MutexAccessRule(user, 
            MutexRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        ShowSecurity(mSec);
    }

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

        foreach(MutexAccessRule 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.MutexRights);
            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 MutexSecurity()

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

        ' Add a rule that denies the current user the 
        ' right to change permissions on the mutex.
        rule = New MutexAccessRule(user, _
            MutexRights.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 mutex. This rule
        ' is merged with the existing Allow rule.
        rule = New MutexAccessRule(user, _
            MutexRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ShowSecurity(mSec)

    End Sub 

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

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

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

Açıklamalar

MutexAccessRule nesneleri sabittir. Farklı bir kullanıcıyı, farklı hakları veya farklı AccessControlTypebir öğesini temsil eden yeni bir erişim kuralı oluşturabilirsiniz, ancak var olan bir erişim kuralını değiştiremezsiniz.