SemaphoreSecurity.RemoveAccessRuleAll(SemaphoreAccessRule) Yöntem

Tanım

Ad Alanı:

System.Security.AccessControl

Bütünleştirilmiş Kod:

System.Threading.AccessControl.dll

Bütünleştirilmiş Kod:

System.dll

Belirtilen kuralla aynı kullanıcı ve AccessControlType (izin ver veya reddet) ile tüm erişim denetimi kurallarını arar ve bulunursa bunları kaldırır.

public:
 void RemoveAccessRuleAll(System::Security::AccessControl::SemaphoreAccessRule ^ rule);

public void RemoveAccessRuleAll (System.Security.AccessControl.SemaphoreAccessRule rule);

override this.RemoveAccessRuleAll : System.Security.AccessControl.SemaphoreAccessRule -> unit

Public Sub RemoveAccessRuleAll (rule As SemaphoreAccessRule)

Parametreler

rule

SemaphoreAccessRule

SemaphoreAccessRule Kullanıcı ve AccessControlType aranacak öğesini belirten bir. Bu kural tarafından belirtilen tüm haklar yoksayılır.

Özel durumlar

ArgumentNullException

rule, null değeridir.

Örnekler

Aşağıdaki kod örneği, yönteminin RemoveAccessRuleAll kullanıcıyla eşleşen tüm kuralları kaldırdığını ve AccessControlTypehakları yoksaydığını gösterir.

Örnek bir SemaphoreSecurity nesne oluşturur, geçerli kullanıcı için çeşitli haklara izin veren ve reddeden kurallar ekler ve ardından ek hakları kuralla Allow birleştirir. Örnek daha sonra geçerli kullanıcının sahipliği almasını sağlayan yeni bir kural oluşturur ve kuralı nesneden SemaphoreSecurity kaldırmak Allow için bu kuralı kullanır.

Not

Bu örnek, güvenlik nesnesini bir Semaphore nesneye eklemez. Güvenlik nesneleri ekleyen örnekler ve Semaphore.SetAccessControliçinde Semaphore.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.
        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);

        // Create a rule that allows the current user to
        // change the owner of the semaphore, and use that rule 
        // to remove the existing allow access rule from 
        // the SemaphoreSecurity object, showing that the user
        // and access type must match, while the rights are
        // ignored.
        Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.");
        rule = new SemaphoreAccessRule(user, 
            SemaphoreRights.TakeOwnership, 
            AccessControlType.Allow);
        mSec.RemoveAccessRuleAll(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

Use RemoveAccessRuleAll to remove the Allow rule.

Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions
 */

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)

        ' Create a rule that allows the current user to
        ' change the owner of the semaphore, and use that rule 
        ' to remove the existing allow access rule from 
        ' the SemaphoreSecurity object, showing that the user
        ' and access type must match, while the rights are
        ' ignored.
        Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.")
        rule = New SemaphoreAccessRule(user, _
            SemaphoreRights.TakeOwnership, _
            AccessControlType.Allow)
        mSec.RemoveAccessRuleAll(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
'
'Use RemoveAccessRuleAll to remove the Allow rule.
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions

Açıklamalar

Geçerli SemaphoreSecurity nesnede aynı kullanıcıya ve ile aynı AccessControlType değere rulesahip kurallar arandı. Bu arama gerçekleştirilirken tarafından rule belirtilen tüm haklar yoksayılır. Eşleşen kural bulunmazsa hiçbir eylem yapılmaz.