SemaphoreRights 枚举

定义

指定可应用于命名的系统信号量对象的访问控制权限。Specifies the access control rights that can be applied to named system semaphore objects.

此枚举有一个 FlagsAttribute 属性,允许按位组合成员值。

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

字段

ChangePermissions 262144

更改与某个命名的信号量关联的安全性和审核规则的权限。The right to change the security and audit rules associated with a named semaphore.

Delete 65536

删除命名的信号量的权限。The right to delete a named semaphore.

FullControl 2031619

对某个命名的信号量进行完全控制以及修改其访问规则和审核规则的权限。The right to exert full control over a named semaphore, and to modify its access rules and audit rules.

Modify 2

释放命名的信号量的权限。The right to release a named semaphore.

ReadPermissions 131072

打开并复制命名的信号量的访问规则和审核规则的权限。The right to open and copy the access rules and audit rules for a named semaphore.

Synchronize 1048576

在命名的信号量上进行等待的权限。The right to wait on a named semaphore.

TakeOwnership 524288

更改命名的信号量的所有者的权限。The right to change the owner of a named semaphore.

示例

下面的代码示例演示如何在创建SemaphoreRights和使用SemaphoreAccessRule对象时使用值。The following code example demonstrates the use of SemaphoreRights values when creating and using SemaphoreAccessRule objects. 该示例创建一个SemaphoreSecurity对象, 添加允许和拒绝当前用户的各种权限的规则, 并显示生成的规则对。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. 然后, 该示例允许当前用户具有新权限, 并显示结果, 并显示新权限与现有AccessControlType.Allow规则合并。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.

备注

此示例不会将安全对象附加Semaphore到对象; 请参见SemaphoreSecuritySemaphore.GetAccessControl方法和。 Semaphore.SetAccessControlThis 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

注解

在创建SemaphoreSecurity对象时, 使用枚举指定访问控制权限。SemaphoreRightsUse the SemaphoreRights enumeration to specify access control rights when you create SemaphoreSecurity objects. 若要将访问权限应用于已命名的系统SemaphoreSecurity信号量, Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity)请将对象Semaphore.SetAccessControl与构造函数和方法一起使用。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.

有关基础 Windows 访问权限的数字值, 请参阅 MSDN Library 中的同步对象安全和访问权限 (Windows)For the numeric values of the underlying Windows access rights, see Synchronization Object Security and Access Rights (Windows) in the MSDN Library.

备注

Windows 98 或 Windows Millennium Edition 不支持同步对象的安全性。Security on synchronization objects is not supported for Windows 98 or Windows Millennium Edition.

适用于

另请参阅