SemaphoreRights SemaphoreRights SemaphoreRights SemaphoreRights Enum

定義

名前付きシステム セマフォ オブジェクトに適用できるアクセス制御権を指定します。Specifies the access control rights that can be applied to named system semaphore objects.

この列挙型には FlagsAttribute 属性があり、メンバー値ではビットごとの組み合わせを使用できます。

public enum class SemaphoreRights
[System.Flags]
[System.Runtime.InteropServices.ComVisible(false)]
[System.Security.SecurityCritical]
public enum SemaphoreRights
type SemaphoreRights = 
Public Enum SemaphoreRights
継承
SemaphoreRightsSemaphoreRightsSemaphoreRightsSemaphoreRights
属性

フィールド

ChangePermissions ChangePermissions ChangePermissions ChangePermissions 262144

名前付きセマフォに関連付けられたセキュリティと監査規則を変更する権限。The right to change the security and audit rules associated with a named semaphore.

Delete Delete Delete Delete 65536

名前付きセマフォを削除する権限。The right to delete a named semaphore.

FullControl FullControl FullControl FullControl 2031619

名前付きセマフォに対するフル コントロール、およびそのアクセス規則と監査規則を変更する権限。The right to exert full control over a named semaphore, and to modify its access rules and audit rules.

Modify Modify Modify Modify 2

名前付きセマフォを解放する権限。The right to release a named semaphore.

ReadPermissions ReadPermissions ReadPermissions ReadPermissions 131072

名前付きセマフォのアクセス規則と監査規則を開いてコピーする権限。The right to open and copy the access rules and audit rules for a named semaphore.

Synchronize Synchronize Synchronize Synchronize 1048576

名前付きセマフォを待機する権限。The right to wait on a named semaphore.

TakeOwnership TakeOwnership TakeOwnership TakeOwnership 524288

名前付きセマフォの所有者を変更する権限。The right to change the owner of a named semaphore.

次のコード例は、オブジェクトをSemaphoreRights作成および使用SemaphoreAccessRuleするときの値の使用方法を示しています。The following code example demonstrates the use of SemaphoreRights values when creating and using SemaphoreAccessRule objects. この例ではSemaphoreSecurity 、オブジェクトを作成し、現在のユーザーに対してさまざまな権限を許可および拒否するルールを追加し、結果として得られるルールのペアを表示します。The example creates a SemaphoreSecurity object, adds rules that allow and deny various rights for the current user, and displays the resulting pair of rules. 次に、現在のユーザーに対して新しい権限を許可し、その結果を表示して、新しい権限がAccessControlType.Allow既存のルールとマージされていることを示します。The example then allows new rights for the current user and displays the result, showing that the new rights are merged with the existing AccessControlType.Allow rule.

注意

この例ではSemaphore 、オブジェクトにセキュリティオブジェクトをアタッチしません。「」、 Semaphore.GetAccessControl 「メソッド」、およびSemaphore.SetAccessControl「」を参照してくださいSemaphoreSecurityThis example does not attach the security object to an Semaphore object; see SemaphoreSecurity, Semaphore.GetAccessControl method, and Semaphore.SetAccessControl.

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);
    }

    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
 */
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)

    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

注釈

列挙体SemaphoreRightsを使用して、オブジェクトを作成SemaphoreSecurityするときのアクセス制御権限を指定します。Use the SemaphoreRights enumeration to specify access control rights when you create SemaphoreSecurity objects. 名前付きシステムセマフォにアクセス権を適用するにSemaphoreSecurityは、 Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity)コンストラクターとSemaphore.SetAccessControlメソッドを持つオブジェクトを使用します。To apply access rights to a named system semaphore, use SemaphoreSecurity objects with the Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity) constructor and the Semaphore.SetAccessControl method.

基になる Windows アクセス権の数値については、MSDN ライブラリの「同期オブジェクトセキュリティとアクセス権 (Windows) 」を参照してください。For the numeric values of the underlying Windows access rights, see Synchronization Object Security and Access Rights (Windows) in the MSDN Library.

注意

同期オブジェクトのセキュリティは、Windows 98 または Windows Millennium Edition ではサポートされていません。Security on synchronization objects is not supported for Windows 98 or Windows Millennium Edition.

適用対象

こちらもご覧ください