MutexRights Énumération

Définition

Spécifie les droits de contrôle d'accès qui peuvent s'appliquer aux objets d'un mutex système nommé.Specifies the access control rights that can be applied to named system mutex objects.

Cette énumération a un attribut FlagsAttribute qui permet une combinaison au niveau du bit de ses valeurs membres.

public enum class MutexRights
[System.Flags]
[System.Security.SecurityCritical]
public enum MutexRights
type MutexRights = 
Public Enum MutexRights
Héritage
MutexRights
Attributs

Champs

ChangePermissions 262144

Droit de modifier les règles de sécurité et d'audit associées à un mutex nommé.The right to change the security and audit rules associated with a named mutex.

Delete 65536

Droit de supprimer un mutex nommé.The right to delete a named mutex.

FullControl 2031617

Droit d'exercer un contrôle total sur un mutex nommé et d'en modifier les règles d'accès et d'audit.The right to exert full control over a named mutex, and to modify its access rules and audit rules.

Modify 1

Droit de libérer un mutex nommé.The right to release a named mutex.

ReadPermissions 131072

Droit d'ouvrir et de copier les règles d'accès et d'audit d'un mutex nommé.The right to open and copy the access rules and audit rules for a named mutex.

Synchronize 1048576

Droit de servir un mutex nommé.The right to wait on a named mutex.

TakeOwnership 524288

Droit de modifier le propriétaire d'un mutex nommé.The right to change the owner of a named mutex.

Exemples

L’exemple de code suivant illustre l’utilisation MutexRights de valeurs lors de la MutexAccessRule création et de l’utilisation d’objets.The following code example demonstrates the use of MutexRights values when creating and using MutexAccessRule objects. L’exemple crée un MutexSecurity objet, ajoute des règles qui autorisent et refusent différents droits pour l’utilisateur actuel et affiche la paire de règles résultante.The example creates an MutexSecurity object, adds rules that allow and deny various rights for the current user, and displays the resulting pair of rules. L’exemple autorise ensuite de nouveaux droits pour l’utilisateur actuel et affiche le résultat, indiquant que les nouveaux droits sont fusionnés avec la AccessControlType.Allow règle existante.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.

Notes

Cet exemple n’attache pas l’objet de sécurité à Mutex un objet; MutexSecurityconsultez Mutex.GetAccessControl , méthode et Mutex.SetAccessControl.This example does not attach the security object to a Mutex object; see MutexSecurity, Mutex.GetAccessControl method, and Mutex.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.
        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

Remarques

Utilisez l' MutexRights énumération pour spécifier les droits de contrôle d' MutexSecurity accès lorsque vous créez des objets.Use the MutexRights enumeration to specify access control rights when you create MutexSecurity objects. Pour appliquer des droits d’accès à un mutex système nommé MutexSecurity , utilisez des Mutex(Boolean, String, Boolean, MutexSecurity) objets avec le Mutex.SetAccessControl constructeur et la méthode.To apply access rights to a named system mutex, use MutexSecurity objects with the Mutex(Boolean, String, Boolean, MutexSecurity) constructor and the Mutex.SetAccessControl method.

Notes

La sécurité sur les objets de synchronisation n’est pas prise en charge pour Windows 98 ou Windows Millennium Edition.Security on synchronization objects is not supported for Windows 98 or Windows Millennium Edition.

S’applique à

Voir aussi