FileSystemAccessRule クラス
アセンブリ: mscorlib (mscorlib.dll 内)


FileSystemAccessRule クラスは、ユーザー アカウント、提供するアクセスの種類 (読み取り、書き込みなど)、およびそのアクセス権を許可するか拒否するかを指定する、基になるアクセス制御エントリ (ACE) の抽象化を表します。このクラスは、アクセス規則を子オブジェクトに反映する方法も指定できます。
FileSystemAccessRule クラスを使用して、新しいアクセス規則を作成します。FileSecurity クラスまたは DirectorySecurity クラスを使用すると、規則を永続化できます。

FileSecurity クラスを使用して、ファイルにアクセス制御エントリ (ACE) を追加し、次にファイルから ACE を削除するコード例を次に示します。この例を実行するには、有効なユーザー アカウントまたはグループ アカウントを指定する必要があります。
Imports System Imports System.IO Imports System.Security.AccessControl Module FileExample Sub Main() Try Dim fileName As String = "test.xml" Console.WriteLine("Adding access control entry for " & fileName) ' Add the access control entry to the file. AddFileSecurity(fileName, "DomainName\AccountName", _ FileSystemRights.ReadData, AccessControlType.Allow) Console.WriteLine("Removing access control entry from " & fileName) ' Remove the access control entry from the file. RemoveFileSecurity(fileName, "DomainName\AccountName", _ FileSystemRights.ReadData, AccessControlType.Allow) Console.WriteLine("Done.") Catch e As Exception Console.WriteLine(e) End Try End Sub ' Adds an ACL entry on the specified file for the specified account. Sub AddFileSecurity(ByVal fileName As String, ByVal account As String, _ ByVal rights As FileSystemRights, ByVal controlType As AccessControlType) ' Get a FileSecurity object that represents the ' current security settings. Dim fSecurity As FileSecurity = File.GetAccessControl(fileName) ' Add the FileSystemAccessRule to the security settings. Dim accessRule As FileSystemAccessRule = _ New FileSystemAccessRule(account, rights, controlType) fSecurity.AddAccessRule(accessRule) ' Set the new access settings. File.SetAccessControl(fileName, fSecurity) End Sub ' Removes an ACL entry on the specified file for the specified account. Sub RemoveFileSecurity(ByVal fileName As String, ByVal account As String, _ ByVal rights As FileSystemRights, ByVal controlType As AccessControlType) ' Get a FileSecurity object that represents the ' current security settings. Dim fSecurity As FileSecurity = File.GetAccessControl(fileName) ' Add the FileSystemAccessRule to the security settings. fSecurity.RemoveAccessRule(New FileSystemAccessRule(account, _ rights, controlType)) ' Set the new access settings. File.SetAccessControl(fileName, fSecurity) End Sub End Module
using System; using System.IO; using System.Security.AccessControl; namespace FileSystemExample { class FileExample { public static void Main() { try { string fileName = "test.xml"; Console.WriteLine("Adding access control entry for " + fileName); // Add the access control entry to the file. AddFileSecurity(fileName, @"DomainName\AccountName", FileSystemRights.ReadData, AccessControlType.Allow); Console.WriteLine("Removing access control entry from " + fileName); // Remove the access control entry from the file. RemoveFileSecurity(fileName, @"DomainName\AccountName", FileSystemRights.ReadData, AccessControlType.Allow); Console.WriteLine("Done."); } catch (Exception e) { Console.WriteLine(e); } } // Adds an ACL entry on the specified file for the specified account. public static void AddFileSecurity(string fileName, string account, FileSystemRights rights, AccessControlType controlType) { // Get a FileSecurity object that represents the // current security settings. FileSecurity fSecurity = File.GetAccessControl(fileName); // Add the FileSystemAccessRule to the security settings. fSecurity.AddAccessRule(new FileSystemAccessRule(account , rights, controlType)); // Set the new access settings. File.SetAccessControl(fileName, fSecurity); } // Removes an ACL entry on the specified file for the specified account. public static void RemoveFileSecurity(string fileName, string account, FileSystemRights rights, AccessControlType controlType) { // Get a FileSecurity object that represents the // current security settings. FileSecurity fSecurity = File.GetAccessControl(fileName); // Add the FileSystemAccessRule to the security settings. fSecurity.RemoveAccessRule(new FileSystemAccessRule(account , rights, controlType)); // Set the new access settings. File.SetAccessControl(fileName, fSecurity); } } }
using namespace System; using namespace System::IO; using namespace System::Security::AccessControl; // Adds an ACL entry on the specified file for the specified account. void AddFileSecurity(String^ fileName, String^ account, FileSystemRights rights, AccessControlType controlType) { // Get a FileSecurity object that represents the // current security settings. FileSecurity^ fSecurity = File::GetAccessControl(fileName); // Add the FileSystemAccessRule to the security settings. fSecurity->AddAccessRule(gcnew FileSystemAccessRule (account,rights, controlType)); // Set the new access settings. File::SetAccessControl(fileName, fSecurity); } // Removes an ACL entry on the specified file for the specified account. void RemoveFileSecurity(String^ fileName, String^ account, FileSystemRights rights, AccessControlType controlType) { // Get a FileSecurity object that represents the // current security settings. FileSecurity^ fSecurity = File::GetAccessControl(fileName); // Remove the FileSystemAccessRule to the security settings. fSecurity->RemoveAccessRule(gcnew FileSystemAccessRule (account,rights, controlType)); // Set the new access settings. File::SetAccessControl(fileName, fSecurity); } int main() { try { String^ fileName = "test.xml"; Console::WriteLine("Adding access control entry for " + fileName); // Add the access control entry to the file. AddFileSecurity(fileName, "MYDOMAIN\\MyAccount", FileSystemRights::ReadData, AccessControlType::Allow); Console::WriteLine("Removing access control entry from " + fileName); // Remove the access control entry from the file. RemoveFileSecurity(fileName, "MYDOMAIN\\MyAccount", FileSystemRights::ReadData, AccessControlType::Allow); Console::WriteLine("Done."); } catch (Exception^ ex) { Console::WriteLine(ex->Message); } }

System.Security.AccessControl.AuthorizationRule
System.Security.AccessControl.AccessRule
System.Security.AccessControl.FileSystemAccessRule


Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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