SemaphoreRights 列舉

定義

指定可套用至具名系統號誌 (Semaphore) 物件的存取控制 (Access Control) 權限。Specifies the access control rights that can be applied to named system semaphore objects.

此列舉有 FlagsAttribute 屬性,因此其成員值可進行位元組合。

public enum class SemaphoreRights
[System.Flags]
public enum SemaphoreRights
[System.Flags]
[System.Security.SecurityCritical]
public enum SemaphoreRights
[System.Flags]
[System.Runtime.InteropServices.ComVisible(false)]
public enum SemaphoreRights
[<System.Flags>]
type SemaphoreRights = 
[<System.Flags>]
[<System.Security.SecurityCritical>]
type SemaphoreRights = 
[<System.Flags>]
[<System.Runtime.InteropServices.ComVisible(false)>]
type SemaphoreRights = 
Public Enum SemaphoreRights
繼承
SemaphoreRights
屬性

欄位

ChangePermissions 262144

變更與具名號誌相關聯之安全性和稽核規則的權限。The right to change the security and audit rules associated with a named semaphore.

Delete 65536

刪除具名號誌的權限。The right to delete a named semaphore.

FullControl 2031619

對具名號誌執行完全控制以及修改其存取規則和稽核規則的權限。The right to exert full control over a named semaphore, and to modify its access rules and audit rules.

Modify 2

釋放具名號誌的權限。The right to release a named semaphore.

ReadPermissions 131072

開啟並複製具名號誌之存取規則和稽核規則的權限。The right to open and copy the access rules and audit rules for a named semaphore.

Synchronize 1048576

等候具名號誌的權限。The right to wait on a named semaphore.

TakeOwnership 524288

變更具名號誌擁有人的權限。The right to change the owner of a named semaphore.

範例

下列程式碼範例將示範如何在 SemaphoreRights 建立和使用物件時使用值 SemaphoreAccessRuleThe following code example demonstrates the use of SemaphoreRights values when creating and using SemaphoreAccessRule objects. 此範例會建立 SemaphoreSecurity 物件、新增允許及拒絕目前使用者各種許可權的規則,並顯示所產生的規則組。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. 然後,此範例會允許目前使用者的新許可權,並顯示結果,顯示新的許可權會與現有的 AccessControlType.Allow 規則合併。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.

注意

這個範例不會將安全性物件附加至 Semaphore 物件,請參閱 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

備註

SemaphoreRights當您建立物件時,請使用列舉來指定存取控制許可權 SemaphoreSecurityUse the SemaphoreRights enumeration to specify access control rights when you create SemaphoreSecurity objects. 若要將存取權限套用至命名系統信號,請使用具有函式 SemaphoreSecurity Semaphore.Semaphore(Int32, Int32, String, Boolean, SemaphoreSecurity)Semaphore.SetAccessControl 方法的物件。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.

如需基礎 Windows 存取權限的數值,請參閱 (Windows) 的同步處理物件安全性與存取權限 For the numeric values of the underlying Windows access rights, see Synchronization Object Security and Access Rights (Windows).

適用於

另請參閱