SemaphoreAccessRule 构造函数

定义

命名空间:: System.Security.AccessControl

程序集:: System.Threading.AccessControl.dll

程序集:: System.dll

包:: System.Threading.AccessControl v11.0.0-preview.5.26302.115

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

初始化 SemaphoreAccessRule 类的新实例。

重载

名称	说明
SemaphoreAccessRule(IdentityReference, SemaphoreRights, AccessControlType)	初始化类的新实例 SemaphoreAccessRule ，指定规则适用的用户或组、访问权限以及是否允许或拒绝指定的访问权限。
SemaphoreAccessRule(String, SemaphoreRights, AccessControlType)	初始化类的新实例 SemaphoreAccessRule ，指定规则应用于的用户或组的名称、访问权限以及是否允许或拒绝指定的访问权限。

SemaphoreAccessRule(IdentityReference, SemaphoreRights, AccessControlType)

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

初始化类的新实例 SemaphoreAccessRule ，指定规则适用的用户或组、访问权限以及是否允许或拒绝指定的访问权限。

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)

参数

identity: IdentityReference

规则适用的用户或组。必须是类型 SecurityIdentifier 或类型，例如 NTAccount 可以转换为类型 SecurityIdentifier。

eventRights: SemaphoreRights

指定允许或拒绝权限的值的 SemaphoreRights 按位组合。

type: AccessControlType

AccessControlType指定是允许还是拒绝权限的值之一。

例外

ArgumentOutOfRangeException

eventRights 指定无效值。

-或-

type 指定无效值。

ArgumentNullException

identity 是 null。

-或-

eventRights 为零。

ArgumentException

identity既不是类型SecurityIdentifier，也不是可以转换为类型NTAccount的类型SecurityIdentifier。

注解

若要输入一个 Semaphore，例如通过调用 WaitOne 该方法，用户必须具有 SemaphoreRights.Synchronize 访问权限。若要退出信号灯，通过调用 Release 该方法，用户必须具有 SemaphoreRights.Modify 访问权限。

适用于

SemaphoreAccessRule(String, SemaphoreRights, AccessControlType)

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

Source:: SemaphoreSecurity.cs

初始化类的新实例 SemaphoreAccessRule ，指定规则应用于的用户或组的名称、访问权限以及是否允许或拒绝指定的访问权限。

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)

参数

identity: String

规则适用的用户或组的名称。

eventRights: SemaphoreRights

指定允许或拒绝权限的值的 SemaphoreRights 按位组合。

type: AccessControlType

AccessControlType指定是允许还是拒绝权限的值之一。

例外

ArgumentOutOfRangeException

eventRights 指定无效值。

-或-

type 指定无效值。

ArgumentNullException

eventRights 为零。

ArgumentException

identity 是 null。

-或-

identity 是长度为零的字符串。

-或-

identity 长度超过 512 个字符。

示例

下面的代码示例演示如何使用此构造函数创建 SemaphoreAccessRule 对象。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。然后，该示例允许当前用户的新权限并显示结果，显示新权限与现有 Allow 规则合并。

注释

此示例不将安全对象附加到对象 Semaphore 。可以在其中找到 Semaphore.GetAccessControl 附加安全对象的示例 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

此构造函数等效于创建对象NTAccount，方法是传递给identityNTAccount.NTAccount(String)构造函数，并将新创建NTAccount的对象传递给SemaphoreAccessRule(IdentityReference, SemaphoreRights, AccessControlType)构造函数。

适用于

反馈

此页面是否有帮助？