MutexSecurity.RemoveAccessRule(MutexAccessRule) 메서드

public:
 bool RemoveAccessRule(System::Security::AccessControl::MutexAccessRule ^ rule);

public bool RemoveAccessRule(System.Security.AccessControl.MutexAccessRule rule);

override this.RemoveAccessRule : System.Security.AccessControl.MutexAccessRule -> bool

Public Function RemoveAccessRule (rule As MutexAccessRule) As Boolean

매개 변수

반품

true 호환되는 규칙을 찾았으면 이고, 그렇지 않으면 false.

예외

예제

다음 코드 예제에서는 개체의 규칙에서 권한을 제거 하는 메서드를 RemoveAccessRuleAllow 사용 하는 방법을 보여 MutexSecurity 줍니다. 또한 다른 권한은 무시됨을 rule 보여 집니다.

이 예제에서는 개체를 MutexSecurity 만들고 현재 사용자에 대한 다양한 권한을 허용하고 거부하는 규칙을 추가합니다. 허용되는 권한에는 , Modify및 ReadPermissions.가 포함Synchronize됩니다. 그런 다음 현재 사용자에 대한 새 규칙(권한 포함ReadPermissions)을 만들고 해당 규칙을 메서드와 함께 TakeOwnership 사용하여 개체의 RemoveAccessRule 규칙 ReadPermissions 에서 제거 Allow 합니다.MutexSecurity 불필요한 TakeOwnership 권한 rule 은 무시됩니다.

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 and read the
        // permissions on the mutex.
        MutexAccessRule rule = new MutexAccessRule(user, 
            MutexRights.Synchronize | MutexRights.Modify
                | MutexRights.ReadPermissions, 
            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);

        // Create a rule that grants the current user 
        // the right to read permissions on the mutex, and
        // take ownership of the mutex. Use this rule to 
        // remove the right to read permissions from the 
        // Allow rule for the current user. The inclusion 
        // of the right to take ownership has no effect.
        rule = new MutexAccessRule(user, 
            MutexRights.TakeOwnership | 
                MutexRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.RemoveAccessRule(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, ReadPermissions, Synchronize


Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: Modify, 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, and to 
        ' read its permissions.
        Dim rule As New MutexAccessRule(user, _
            MutexRights.Synchronize _
            Or MutexRights.Modify _
            Or MutexRights.ReadPermissions, _
            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)

        ' Create a rule that grants the current user 
        ' the right to read permissions on the mutex, and
        ' take ownership of the mutex. Use this rule to 
        ' remove the right to read permissions from the 
        ' Allow rule for the current user. The inclusion 
        ' of the right to take ownership has no effect.
        rule = New MutexAccessRule(user, _
            MutexRights.TakeOwnership _
            Or MutexRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.RemoveAccessRule(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, ReadPermissions, Synchronize
'
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: Modify, Synchronize

설명

현재 MutexSecurity 는 사용자와 값AccessControlType이 같은 rule 규칙을 검색합니다. 이러한 규칙을 찾을 수 없으면 아무 작업도 수행되지 않고 메서드가 반환됩니다 false. 일치하는 규칙이 발견되면 해당 상속 및 호환성 플래그가 지정된 rule플래그와의 호환성을 확인합니다. 호환되는 규칙을 찾을 수 없으면 아무 작업도 수행되지 않고 메서드가 반환됩니다 false. 호환 플래그가 있는 규칙을 발견하면 지정된 rule 권한이 호환되는 규칙에서 제거되고 메서드가 반환됩니다 true. 호환되는 규칙에 포함되지 않은 권한을 지정하는 경우 rule 해당 권한과 관련하여 아무런 조치도 취하지 않습니다. 호환되는 규칙에서 모든 권한이 제거되면 현재 MutexSecurity 개체에서 전체 규칙이 제거됩니다.