SemaphoreRights SemaphoreRights SemaphoreRights SemaphoreRights Enum

Definizione

Specifica i diritti di controllo di accesso che possono essere applicati a oggetti semaforo di sistema denominati.Specifies the access control rights that can be applied to named system semaphore objects.

Questa enumerazione ha un attributo FlagsAttribute che consente una combinazione bit per bit dei valori del relativo membro.

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

Campi

ChangePermissions ChangePermissions ChangePermissions ChangePermissions 262144

Diritto di modificare le regole di sicurezza e di controllo associate a un semaforo denominato.The right to change the security and audit rules associated with a named semaphore.

Delete Delete Delete Delete 65536

Diritto di eliminare un semaforo denominato.The right to delete a named semaphore.

FullControl FullControl FullControl FullControl 2031619

Diritto di esercitare il controllo completo su un semaforo denominato e di modificarne le regole di accesso e le regole di controllo.The right to exert full control over a named semaphore, and to modify its access rules and audit rules.

Modify Modify Modify Modify 2

Diritto di rilasciare un semaforo denominato.The right to release a named semaphore.

ReadPermissions ReadPermissions ReadPermissions ReadPermissions 131072

Diritto di aprire e copiare le regole di accesso e le regole di controllo per un semaforo denominato.The right to open and copy the access rules and audit rules for a named semaphore.

Synchronize Synchronize Synchronize Synchronize 1048576

Diritto di restare in attesa di un semaforo denominato.The right to wait on a named semaphore.

TakeOwnership TakeOwnership TakeOwnership TakeOwnership 524288

Diritto di modificare il proprietario di un semaforo denominato.The right to change the owner of a named semaphore.

Esempi

Nell'esempio di codice riportato di seguito viene SemaphoreRights illustrato l'utilizzo dei valori SemaphoreAccessRule durante la creazione e l'utilizzo di oggetti.The following code example demonstrates the use of SemaphoreRights values when creating and using SemaphoreAccessRule objects. Nell'esempio viene creato SemaphoreSecurity un oggetto, vengono aggiunte regole che consentono e negano diversi diritti per l'utente corrente e viene visualizzata la coppia di regole risultante.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. Nell'esempio vengono quindi consentiti nuovi diritti per l'utente corrente e viene visualizzato il risultato, mostrando che i nuovi diritti vengono AccessControlType.Allow Uniti con la regola esistente.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.

Nota

In questo esempio l'oggetto di sicurezza non viene collegato Semaphore a un oggetto SemaphoreSecurity; Semaphore.GetAccessControl vedere, metodo Semaphore.SetAccessControle.This 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

Commenti

Utilizzare l' SemaphoreRights enumerazione per specificare i diritti di controllo di accesso SemaphoreSecurity quando si creano oggetti.Use the SemaphoreRights enumeration to specify access control rights when you create SemaphoreSecurity objects. Per applicare i diritti di accesso a un semaforo di sistema SemaphoreSecurity denominato, usare Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity) gli oggetti con Semaphore.SetAccessControl il costruttore e il metodo.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.

Per i valori numerici dei diritti di accesso di Windows sottostanti, vedere sicurezza degli oggetti di sincronizzazione e diritti di accesso (Windows) in MSDN Library.For the numeric values of the underlying Windows access rights, see Synchronization Object Security and Access Rights (Windows) in the MSDN Library.

Nota

La sicurezza per gli oggetti di sincronizzazione non è supportata per Windows 98 o Windows Millennium Edition.Security on synchronization objects is not supported for Windows 98 or Windows Millennium Edition.

Si applica a

Vedi anche