EventWaitHandleSecurity.SetAccessRule(EventWaitHandleAccessRule) Yöntem

Tanım

Ad Alanı:

System.Security.AccessControl

Bütünleştirilmiş Kod:

System.Threading.AccessControl.dll

Paket:

System.Threading.AccessControl v8.0.0

Kaynak:

EventWaitHandleSecurity.cs

Belirtilen kuralla aynı kullanıcı ve AccessControlType (izin ver veya reddet) ile tüm erişim denetimi kurallarını kaldırır ve ardından belirtilen kuralı ekler.

public:
 void SetAccessRule(System::Security::AccessControl::EventWaitHandleAccessRule ^ rule);

public void SetAccessRule (System.Security.AccessControl.EventWaitHandleAccessRule rule);

override this.SetAccessRule : System.Security.AccessControl.EventWaitHandleAccessRule -> unit

Public Sub SetAccessRule (rule As EventWaitHandleAccessRule)

Parametreler

rule

EventWaitHandleAccessRule

EventWaitHandleAccessRule Eklenecek. Bu kural eklenmeden önce kaldırılacak kuralları kullanıcı ve AccessControlType bu kuralın kullanıcısı belirler.

Özel durumlar

ArgumentNullException

rule, null değeridir.

Örnekler

Aşağıdaki kod örneği, yönteminin SetAccessRule hem kullanıcıyla hem de ile eşleşen tüm kuralları kaldırdığını ve AccessControlTyperulebunları ile ruledeğiştirdiğini gösterir.

Örnek bir EventWaitHandleSecurity nesne oluşturur ve geçerli kullanıcı için çeşitli haklara izin veren ve reddeden kurallar ekler. Örnek daha sonra geçerli kullanıcının tam denetimine izin veren yeni bir kural oluşturur ve mevcut Allow kuralı yeni kuralla değiştirmek için yöntemini kullanırSetAccessRule. Erişimi reddeden kural etkilenmez.

Not

Bu örnek, güvenlik nesnesini bir EventWaitHandle nesneye eklemez. Güvenlik nesnelerini ekleyen örnekler ve EventWaitHandle.SetAccessControliçinde EventWaitHandle.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.
        EventWaitHandleSecurity mSec = new EventWaitHandleSecurity();

        // Add a rule that grants the current user the 
        // right to wait on or signal the event and read the
        // permissions on the event.
        EventWaitHandleAccessRule rule = new EventWaitHandleAccessRule(user, 
            EventWaitHandleRights.Synchronize | EventWaitHandleRights.Modify
                | EventWaitHandleRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

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

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

        // Create a rule that grants the current user 
        // the full control over the event. Use the
        // SetAccessRule method to replace the 
        // existing Allow rule with the new rule. 
        rule = new EventWaitHandleAccessRule(user,
            EventWaitHandleRights.FullControl,
            AccessControlType.Allow);
        mSec.SetAccessRule(rule);

        ShowSecurity(mSec);
    }

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

        foreach(EventWaitHandleAccessRule 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.EventWaitHandleRights);
            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, ReadPermissions, Synchronize


Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: FullControl
 */

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 EventWaitHandleSecurity()

        ' Add a rule that grants the current user the 
        ' right to wait on or signal the event, and to 
        ' read its permissions.
        Dim rule As New EventWaitHandleAccessRule(user, _
            EventWaitHandleRights.Synchronize _
            Or EventWaitHandleRights.Modify _
            Or EventWaitHandleRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

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

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

        ' Create a rule that grants the current user 
        ' the full control over the event. Use the
        ' SetAccessRule method to replace the 
        ' the existing Allow rule with the new rule. 
        rule = New EventWaitHandleAccessRule(user, _
            EventWaitHandleRights.FullControl, _
            AccessControlType.Allow)
        mSec.SetAccessRule(rule)

        ShowSecurity(mSec)
        
    End Sub 

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

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

            Console.WriteLine("        User: {0}", ar.IdentityReference)
            Console.WriteLine("        Type: {0}", ar.AccessControlType)
            Console.WriteLine("      Rights: {0}", ar.EventWaitHandleRights)
            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, ReadPermissions, Synchronize
'
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: FullControl

Açıklamalar

Belirtilen kurala sahipse Allow, bu yöntemin etkisi, belirtilen kullanıcı için tüm Allow kuralları kaldırmak ve bunları belirtilen kuralla değiştirmektir. Belirtilen kuralda varsa Deny, belirtilen kullanıcının tüm Deny kuralları belirtilen kuralla değiştirilir.

Kullanıcısı ve AccessControlType belirtilen kuralla eşleşen kural yoksa eklenir rule .