MutexRights 枚举
定义
重要
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指定可应用于命名的系统 mutex 对象的访问控制权限。
此枚举支持其成员值的按位组合。
public enum class MutexRights[System.Flags]
public enum MutexRights[System.Flags]
[System.Security.SecurityCritical]
public enum MutexRights[<System.Flags>]
type MutexRights = [<System.Flags>]
[<System.Security.SecurityCritical>]
type MutexRights = Public Enum MutexRights- 继承
- 属性
字段
| 名称 | 值 | 说明 |
|---|---|---|
| ChangePermissions | 262144 | 更改与命名的 mutex 关联的安全性和审核规则的权限。 |
| Delete | 65536 | 删除命名的 mutex 的权限。 |
| FullControl | 2031617 | 对某个命名的 mutex 进行完全控制和修改其访问规则和审核规则的权限。 |
| Modify | 1 | 释放命名的 mutex 的权限。 |
| ReadPermissions | 131072 | 打开并复制命名的 mutex 的访问规则和审核规则的权限。 |
| Synchronize | 1048576 | 在命名的 mutex 上等待的权限。 |
| TakeOwnership | 524288 | 更改命名的 mutex 的所有者的权限。 |
示例
下面的代码示例演示如何在创建和使用 对象时使用MutexRightsMutexAccessRule值。 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 AccessControlType.Allow 规则合并。
注意
此示例不将安全对象附加到 Mutex 对象;请参阅 MutexSecurity、 Mutex.GetAccessControl 方法和 Mutex.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.
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
创建MutexSecurity对象时，MutexRights使用 枚举指定访问控制权限。 若要对命名系统互斥体应用访问权限，请将 对象与 构造函数和 Mutex.SetAccessControl 方法一MutexSecurity起使用Mutex(Boolean, String, Boolean, MutexSecurity)。
