SemaphoreAccessRule Costruttori

Origine:

SemaphoreSecurity.cs

Origine:

SemaphoreSecurity.cs

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

public SemaphoreAccessRule (System.Security.Principal.IdentityReference identity, System.Security.AccessControl.SemaphoreRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.SemaphoreAccessRule : System.Security.Principal.IdentityReference * System.Security.AccessControl.SemaphoreRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.SemaphoreAccessRule

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

Parametri

Eccezioni

Commenti

Per immettere un Semaphoreoggetto , ad esempio chiamando il WaitOne metodo, un utente deve avere SemaphoreRights.Synchronize accesso. Per uscire dal semaforo, chiamando il Release metodo, l'utente deve avere SemaphoreRights.Modify accesso.

Origine:

SemaphoreSecurity.cs

Origine:

SemaphoreSecurity.cs

public:
 SemaphoreAccessRule(System::String ^ identity, System::Security::AccessControl::SemaphoreRights eventRights, System::Security::AccessControl::AccessControlType type);

public SemaphoreAccessRule (string identity, System.Security.AccessControl.SemaphoreRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.SemaphoreAccessRule : string * System.Security.AccessControl.SemaphoreRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.SemaphoreAccessRule

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

Parametri

Eccezioni

Esempio

Nell'esempio di codice seguente viene illustrato l'uso di questo costruttore per creare SemaphoreAccessRule oggetti. L'esempio crea un SemaphoreSecurity oggetto, aggiunge regole che consentono e negano vari diritti per l'utente corrente e visualizzano la coppia di regole risultante. L'esempio consente quindi nuovi diritti per l'utente corrente e visualizza il risultato, che mostra che i nuovi diritti vengono uniti alla regola esistente Allow .

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

Per immettere un Semaphoreoggetto , ad esempio chiamando il WaitOne metodo, un utente deve avere SemaphoreRights.Synchronize accesso. Per uscire dal semaforo, chiamando il Release metodo, l'utente deve avere SemaphoreRights.Modify accesso.

Questo costruttore equivale alla creazione di un NTAccount oggetto, passando identity al NTAccount.NTAccount(String) costruttore e passando l'oggetto appena creato NTAccount al SemaphoreAccessRule(IdentityReference, SemaphoreRights, AccessControlType) costruttore.