MutexAccessRule 构造函数

定义

命名空间:: System.Security.AccessControl

程序集:: System.Threading.AccessControl.dll

程序集:: mscorlib.dll

包:: System.Threading.AccessControl v10.0.0-rc.2.25502.107

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 MutexAccessRule 类的新实例。

重载

MutexAccessRule(IdentityReference, MutexRights, AccessControlType)	初始化 MutexAccessRule 类的新实例，指定此规则应用到的用户或组、访问权限以及是否允许或拒绝指定的访问权限。
MutexAccessRule(String, MutexRights, AccessControlType)	初始化 MutexAccessRule 类的新实例，指定应用此规则的用户或组的名称、访问权限以及是否允许或拒绝指定的访问权限。

MutexAccessRule(IdentityReference, MutexRights, AccessControlType)

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

初始化 MutexAccessRule 类的新实例，指定此规则应用到的用户或组、访问权限以及是否允许或拒绝指定的访问权限。

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

public MutexAccessRule(System.Security.Principal.IdentityReference identity, System.Security.AccessControl.MutexRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.MutexAccessRule : System.Security.Principal.IdentityReference * System.Security.AccessControl.MutexRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.MutexAccessRule

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

参数

identity: IdentityReference

此规则应用到的用户或组。必须为 SecurityIdentifier 类型，或可以转换为 NTAccount 类型的类型，如 SecurityIdentifier。

eventRights: MutexRights

MutexRights 值的按位组合，它指定允许或拒绝的权限。

type: AccessControlType

AccessControlType 值之一，用于指定是允许还是拒绝相应权限。

例外

ArgumentOutOfRangeException

eventRights 指定了一个无效值。

- 或 -

type 指定了一个无效值。

ArgumentNullException

identity 为 null。

- 或 -

eventRights 为零。

ArgumentException

identity 既不属于类型 SecurityIdentifier，也不属于可以转换为 NTAccount 类型的类型（如 SecurityIdentifier）。

注解

若要通过调用 WaitOne WaitAny) 或 WaitAll 方法等待 Mutex (，用户必须具有MutexRights.Synchronize访问权限。若要释放互斥体，通过调用 ReleaseMutex 方法，用户必须具有 MutexRights.Modify 访问权限。

适用于

MutexAccessRule(String, MutexRights, AccessControlType)

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

Source:: MutexSecurity.cs

初始化 MutexAccessRule 类的新实例，指定应用此规则的用户或组的名称、访问权限以及是否允许或拒绝指定的访问权限。

public:
 MutexAccessRule(System::String ^ identity, System::Security::AccessControl::MutexRights eventRights, System::Security::AccessControl::AccessControlType type);

public MutexAccessRule(string identity, System.Security.AccessControl.MutexRights eventRights, System.Security.AccessControl.AccessControlType type);

new System.Security.AccessControl.MutexAccessRule : string * System.Security.AccessControl.MutexRights * System.Security.AccessControl.AccessControlType -> System.Security.AccessControl.MutexAccessRule

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

参数

identity: String

应用此规则的用户或组的名称。

eventRights: MutexRights

MutexRights 值的按位组合，它指定允许或拒绝的权限。

type: AccessControlType

AccessControlType 值之一，用于指定是允许还是拒绝相应权限。

例外

ArgumentOutOfRangeException

eventRights 指定了一个无效值。

- 或 -

type 指定了一个无效值。

ArgumentNullException

eventRights 为零。

ArgumentException

identity 为 null。

- 或 -

identity 是一个长度为零的字符串。

- 或 -

identity 的长度超过 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 MutexAccessRule 对象。该示例创建一个 MutexSecurity 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，该示例为当前用户允许新权限并显示结果，显示新权限与现有 Allow 规则合并。

注意

此示例不将安全对象附加到对象 Mutex 。可以在和 Mutex.SetAccessControl中找到Mutex.GetAccessControl附加安全对象的示例。

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.
        MutexSecurity mSec = new MutexSecurity();

        // Add a rule that grants the current user the 
        // right to enter or release the mutex.
        MutexAccessRule rule = new MutexAccessRule(user, 
            MutexRights.Synchronize | MutexRights.Modify, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        // Add a rule that denies the current user the 
        // right to change permissions on the mutex.
        rule = new MutexAccessRule(user, 
            MutexRights.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 mutex. This rule
        // is merged with the existing Allow rule.
        rule = new MutexAccessRule(user, 
            MutexRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        ShowSecurity(mSec);
    }

    private static void ShowSecurity(MutexSecurity security)
    {
        Console.WriteLine("\r\nCurrent access rules:\r\n");

        foreach(MutexAccessRule 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.MutexRights);
            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 MutexSecurity()

        ' Add a rule that grants the current user the 
        ' right to enter or release the mutex.
        Dim rule As New MutexAccessRule(user, _
            MutexRights.Synchronize _
            Or MutexRights.Modify, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ' Add a rule that denies the current user the 
        ' right to change permissions on the mutex.
        rule = New MutexAccessRule(user, _
            MutexRights.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 mutex. This rule
        ' is merged with the existing Allow rule.
        rule = New MutexAccessRule(user, _
            MutexRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ShowSecurity(mSec)

    End Sub 

    Private Shared Sub ShowSecurity(ByVal security As MutexSecurity)
        Console.WriteLine(vbCrLf & "Current access rules:" & vbCrLf)

        For Each ar As MutexAccessRule In _
            security.GetAccessRules(True, True, GetType(NTAccount))

            Console.WriteLine("        User: {0}", ar.IdentityReference)
            Console.WriteLine("        Type: {0}", ar.AccessControlType)
            Console.WriteLine("      Rights: {0}", ar.MutexRights)
            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NTAccount通过传递给identityNTAccount.NTAccount(String)构造函数并将新创建NTAccount的对象传递给构造函数来创建对象MutexAccessRule(IdentityReference, MutexRights, AccessControlType)。

适用于

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