EventWaitHandleSecurity.RemoveAccessRuleAll(EventWaitHandleAccessRule) Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Busca todas las reglas de control de acceso con el mismo usuario y AccessControlType (conceder o denegar) que la regla especificada y, si las encuentra, las quita.
public:
void RemoveAccessRuleAll(System::Security::AccessControl::EventWaitHandleAccessRule ^ rule);public void RemoveAccessRuleAll (System.Security.AccessControl.EventWaitHandleAccessRule rule);override this.RemoveAccessRuleAll : System.Security.AccessControl.EventWaitHandleAccessRule -> unitPublic Sub RemoveAccessRuleAll (rule As EventWaitHandleAccessRule)Parámetros
EventWaitHandleAccessRule que especifica el usuario y AccessControlType que se va a buscar. Se pasa por alto cualquier derecho especificado por esta regla.
Excepciones
rule es null.
Ejemplos
En el ejemplo de código siguiente se muestra que el RemoveAccessRuleAll método quita todas las reglas que coinciden con el usuario y AccessControlType, ignorando los derechos.
En el ejemplo se crea un EventWaitHandleSecurity objeto , se agregan reglas que permiten y deniegan varios derechos para el usuario actual y, a continuación, se combinan derechos adicionales en la Allow regla. A continuación, el ejemplo crea una nueva regla que permite al usuario actual tomar posesión y usa esa regla para quitar la Allow regla del EventWaitHandleSecurity objeto .
Nota
En este ejemplo no se adjunta el objeto de seguridad a un EventWaitHandle objeto . Los ejemplos que asocian objetos de seguridad se pueden encontrar en EventWaitHandle.GetAccessControl y EventWaitHandle.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.
EventWaitHandleSecurity mSec = new EventWaitHandleSecurity();
// Add a rule that grants the current user the
// right to wait on or signal the event.
EventWaitHandleAccessRule rule = new EventWaitHandleAccessRule(user,
EventWaitHandleRights.Synchronize | EventWaitHandleRights.Modify,
AccessControlType.Allow);
mSec.AddAccessRule(rule);
// Add a rule that denies the current user the
// right to change permissions on the event.
rule = new EventWaitHandleAccessRule(user,
EventWaitHandleRights.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 event. This rule
// is merged with the existing Allow rule.
rule = new EventWaitHandleAccessRule(user,
EventWaitHandleRights.ReadPermissions,
AccessControlType.Allow);
mSec.AddAccessRule(rule);
ShowSecurity(mSec);
// Create a rule that allows the current user to
// take ownership of the event, and use that rule
// to remove the existing Allow rule from the
// EventWaitHandleSecurity object, showing that the user
// and access type must match, while the rights are
// ignored.
Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.");
rule = new EventWaitHandleAccessRule(user,
EventWaitHandleRights.TakeOwnership,
AccessControlType.Allow);
mSec.RemoveAccessRuleAll(rule);
ShowSecurity(mSec);
}
private static void ShowSecurity(EventWaitHandleSecurity security)
{
Console.WriteLine("\r\nCurrent access rules:\r\n");
foreach(EventWaitHandleAccessRule 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.EventWaitHandleRights);
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
Use RemoveAccessRuleAll to remove the Allow rule.
Current access rules:
User: TestDomain\TestUser
Type: Deny
Rights: ChangePermissions
*/
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 EventWaitHandleSecurity()
' Add a rule that grants the current user the
' right to wait on or signal the event.
Dim rule As New EventWaitHandleAccessRule(user, _
EventWaitHandleRights.Synchronize _
Or EventWaitHandleRights.Modify, _
AccessControlType.Allow)
mSec.AddAccessRule(rule)
' Add a rule that denies the current user the
' right to change permissions on the event.
rule = New EventWaitHandleAccessRule(user, _
EventWaitHandleRights.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 event. This rule
' is merged with the existing Allow rule.
rule = New EventWaitHandleAccessRule(user, _
EventWaitHandleRights.ReadPermissions, _
AccessControlType.Allow)
mSec.AddAccessRule(rule)
ShowSecurity(mSec)
' Create a rule that allows the current user to
' take ownership of the event, and use that rule
' to remove the existing allow access rule from
' the EventWaitHandleSecurity object, showing that the user
' and access type must match, while the rights are
' ignored.
Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.")
rule = New EventWaitHandleAccessRule(user, _
EventWaitHandleRights.TakeOwnership, _
AccessControlType.Allow)
mSec.RemoveAccessRuleAll(rule)
ShowSecurity(mSec)
End Sub
Private Shared Sub ShowSecurity(ByVal security As EventWaitHandleSecurity)
Console.WriteLine(vbCrLf & "Current access rules:" & vbCrLf)
For Each ar As EventWaitHandleAccessRule In _
security.GetAccessRules(True, True, GetType(NTAccount))
Console.WriteLine(" User: {0}", ar.IdentityReference)
Console.WriteLine(" Type: {0}", ar.AccessControlType)
Console.WriteLine(" Rights: {0}", ar.EventWaitHandleRights)
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
'
'Use RemoveAccessRuleAll to remove the Allow rule.
'
'Current access rules:
'
' User: TestDomain\TestUser
' Type: Deny
' Rights: ChangePermissions
Comentarios
Se busca en el objeto actual EventWaitHandleSecurity reglas que tengan el mismo usuario y el mismo AccessControlType valor que rule. Los derechos especificados por rule se omiten al realizar esta búsqueda. Se quitan todas las reglas de coincidencia. Si no se encuentra ninguna regla de coincidencia, no se realiza ninguna acción.
