MutexAccessRule コンストラクター

ソース:

MutexSecurity.cs

ソース:

MutexSecurity.cs

public:
 MutexAccessRule(System::Security::Principal::IdentityReference ^ identity, System::Security::AccessControl::MutexRights eventRights, System::Security::AccessControl::AccessControlType type);

public MutexAccessRule (System.Security.Principal.IdentityReference identity, System.Security.AccessControl.MutexRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.MutexAccessRule : System.Security.Principal.IdentityReference * System.Security.AccessControl.MutexRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.MutexAccessRule

Public Sub New (identity As IdentityReference, eventRights As MutexRights, type As AccessControlType)

パラメーター

例外

注釈

(、 メソッドまたは WaitAll メソッドを WaitAnyWaitOneMutex 呼び出して) を待機するには、ユーザーがアクセス権を持っているMutexRights.Synchronize必要があります。 ミューテックスを解放するには、 メソッドを ReleaseMutex 呼び出すことによって、ユーザーにアクセス権が必要です MutexRights.Modify 。

ソース:

MutexSecurity.cs

ソース:

MutexSecurity.cs

public:
 MutexAccessRule(System::String ^ identity, System::Security::AccessControl::MutexRights eventRights, System::Security::AccessControl::AccessControlType type);

public MutexAccessRule (string identity, System.Security.AccessControl.MutexRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.MutexAccessRule : string * System.Security.AccessControl.MutexRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.MutexAccessRule

Public Sub New (identity As String, eventRights As MutexRights, type As AccessControlType)

パラメーター

例外

例

次のコード例では、このコンストラクターを使用してオブジェクトを作成 MutexAccessRule する方法を示します。 この例では、 オブジェクトを MutexSecurity 作成し、現在のユーザーに対してさまざまな権限を許可または拒否する規則を追加し、結果の規則のペアを表示します。 次に、現在のユーザーに対して新しい権限を許可し、新しい権限が既存 Allow のルールとマージされていることを示す結果を表示します。

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

注釈

(、 メソッドまたは WaitAll メソッドを WaitAnyWaitOneMutex 呼び出して) を待機するには、ユーザーがアクセス権を持っているMutexRights.Synchronize必要があります。 ミューテックスを解放するには、 メソッドを ReleaseMutex 呼び出すことによって、ユーザーにアクセス権が MutexRights.Modify 必要です。

このコンストラクターは、コンストラクターに渡しidentity、新しく作成NTAccountされたオブジェクトをNTAccount.NTAccount(String)コンストラクターに渡すことによって、オブジェクトをMutexAccessRule(IdentityReference, MutexRights, AccessControlType)作成NTAccountすることと同じです。