FileInfo.GetAccessControl Método

Definição

Obtém um objeto FileSecurity que encapsula as entradas de ACL (lista de controle de acesso) do arquivo descrito pelo objeto FileInfo atual.Gets a FileSecurity object that encapsulates the access control list (ACL) entries for the file described by the current FileInfo object.

Sobrecargas

GetAccessControl()

Obtém um objeto FileSecurity que encapsula as entradas de ACL (lista de controle de acesso) do arquivo descrito pelo objeto FileInfo atual.Gets a FileSecurity object that encapsulates the access control list (ACL) entries for the file described by the current FileInfo object.

GetAccessControl(AccessControlSections)

Obtém um objeto FileSecurity que encapsula o tipo especificado de entradas de ACL (lista de controle de acesso) do arquivo descrito pelo objeto FileInfo atual.Gets a FileSecurity object that encapsulates the specified type of access control list (ACL) entries for the file described by the current FileInfo object.

Comentários

Use os GetAccessControl métodos para recuperar as entradas da ACL (lista de controle de acesso) para o arquivo atual.Use the GetAccessControl methods to retrieve the access control list (ACL) entries for the current file.

GetAccessControl()

Obtém um objeto FileSecurity que encapsula as entradas de ACL (lista de controle de acesso) do arquivo descrito pelo objeto FileInfo atual.Gets a FileSecurity object that encapsulates the access control list (ACL) entries for the file described by the current FileInfo object.

public:
 System::Security::AccessControl::FileSecurity ^ GetAccessControl();
public System.Security.AccessControl.FileSecurity GetAccessControl ();
member this.GetAccessControl : unit -> System.Security.AccessControl.FileSecurity
Public Function GetAccessControl () As FileSecurity

Retornos

FileSecurity

Um objeto FileSecurity que encapsula as regras de controle de acesso do arquivo atual.A FileSecurity object that encapsulates the access control rules for the current file.

Exceções

Um erro de E/S ocorreu ao abrir o arquivo.An I/O error occurred while opening the file.

A conta do sistema atual não tem privilégios administrativos.The current system account does not have administrative privileges.

Não foi possível encontrar o arquivo.The file could not be found.

Não há suporte para essa operação na plataforma atual.This operation is not supported on the current platform.

- ou --or-

O chamador não tem a permissão necessária.The caller does not have the required permission.

Exemplos

O exemplo de código a seguir usa o GetAccessControl método e o SetAccessControl método para adicionar e remover uma entrada de lista de controle de acesso (ACL) de um arquivo.The following code example uses the GetAccessControl method and the SetAccessControl method to add and then remove an access control list (ACL) entry from a file. Você deve fornecer uma conta de grupo ou de usuário válida para executar este exemplo.You must supply a valid user or group account to run this example.

#using <System.Security.dll>
using namespace System;
using namespace System::IO;
using namespace System::Security::AccessControl;
using namespace System::Security::Principal;

// Adds an ACL entry on the specified file for the specified account.
static void AddFileSecurity(String^ fileName, String^ account,
                     FileSystemRights^ rights, 
                     AccessControlType^ controlType)
{
    // Create a new FileInfo object.
    FileInfo^ fInfo = gcnew FileInfo(fileName);
    if (!fInfo->Exists)
    {
        fInfo->Create();
    }

    // Get a FileSecurity object that represents the
    // current security settings.
    FileSecurity^ fSecurity = fInfo->GetAccessControl();

    // Add the FileSystemAccessRule to the security settings.
    fSecurity->AddAccessRule(gcnew FileSystemAccessRule(account,
        *rights, *controlType));

    // Set the new access settings.
    fInfo->SetAccessControl(fSecurity);
}

// Removes an ACL entry on the specified file for the specified account.
static void RemoveFileSecurity(String^ fileName, String^ account,
                        FileSystemRights^ rights, 
                        AccessControlType^ controlType)
{
    // Create a new FileInfo object.
    FileInfo^ fInfo = gcnew FileInfo(fileName);
    if (!fInfo->Exists)
    {
        fInfo->Create();
    }

    // Get a FileSecurity object that represents the
    // current security settings.
    FileSecurity^ fSecurity = fInfo->GetAccessControl();

    // Remove the FileSystemAccessRule from the security settings.
    fSecurity->RemoveAccessRule(gcnew FileSystemAccessRule(account, 
        *rights, *controlType));

    // Set the new access settings.
    fInfo->SetAccessControl(fSecurity);
}

int main()
{
    try
    {
        String^ fileName = "c:\\test.xml";

        Console::WriteLine("Adding access control entry for " +
            fileName);

        // Add the access control entry to the file.
        // Before compiling this snippet, change MyDomain to your 
        // domain name and MyAccessAccount to the name 
        // you use to access your domain.
        AddFileSecurity(fileName, "MyDomain\\MyAccessAccount",
            FileSystemRights::ReadData, AccessControlType::Allow);

        Console::WriteLine("Removing access control entry from " +
            fileName);

        // Remove the access control entry from the file.
        // Before compiling this snippet, change MyDomain to your 
        // domain name and MyAccessAccount to the name 
        // you use to access your domain.
        RemoveFileSecurity(fileName, "MyDomain\\MyAccessAccount",
            FileSystemRights::ReadData, AccessControlType::Allow);

        Console::WriteLine("Done.");
    }
    catch (Exception^ e)
    {
        Console::WriteLine(e);
    }

}
//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//Adding access control entry for c:\test.xml
//Removing access control entry from c:\test.xml
//Done.
//
using System;
using System.IO;
using System.Security.AccessControl;

namespace FileSystemExample
{
    class FileExample
    {
        public static void Main()
        {
            try
            {
                string FileName = "c:/test.xml";

                Console.WriteLine("Adding access control entry for " + FileName);

                // Add the access control entry to the file.
                // Before compiling this snippet, change MyDomain to your
                // domain name and MyAccessAccount to the name
                // you use to access your domain.
                AddFileSecurity(FileName, @"MyDomain\MyAccessAccount", FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine("Removing access control entry from " + FileName);

                // Remove the access control entry from the file.
                // Before compiling this snippet, change MyDomain to your
                // domain name and MyAccessAccount to the name
                // you use to access your domain.
                RemoveFileSecurity(FileName, @"MyDomain\MyAccessAccount", 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)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(FileName);

            // Get a FileSecurity object that represents the
            // current security settings.
            FileSecurity fSecurity = fInfo.GetAccessControl();

            // Add the FileSystemAccessRule to the security settings.
            fSecurity.AddAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            fInfo.SetAccessControl(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)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(FileName);

            // Get a FileSecurity object that represents the
            // current security settings.
            FileSecurity fSecurity = fInfo.GetAccessControl();

            // Add the FileSystemAccessRule to the security settings.
            fSecurity.RemoveAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            fInfo.SetAccessControl(fSecurity);
        }
    }
}
//This code produces output similar to the following;
//results may vary based on the computer/file structure/etc.:
//
//Adding access control entry for c:\test.xml
//Removing access control entry from c:\test.xml
//Done.
//
Imports System.IO
Imports System.Security.AccessControl



Module FileExample

    Sub Main()
        Try
            Dim FileName As String = "c:\test.xml"

            Console.WriteLine("Adding access control entry for " & FileName)

            ' Add the access control entry to the file.
            ' Before compiling this snippet, change MyDomain to your 
            ' domain name and MyAccessAccount to the name 
            ' you use to access your domain.
            AddFileSecurity(FileName, "MyDomain\\MyAccessAccount", FileSystemRights.ReadData, AccessControlType.Allow)

            Console.WriteLine("Removing access control entry from " & FileName)

            ' Remove the access control entry from the file.
            ' Before compiling this snippet, change MyDomain to your 
            ' domain name and MyAccessAccount to the name 
            ' you use to access your domain.
            RemoveFileSecurity(FileName, "MyDomain\\MyAccessAccount", 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)
        ' Create a new FileInfo object.
        Dim fInfo As New FileInfo(FileName)

        ' Get a FileSecurity object that represents the 
        ' current security settings.
        Dim fSecurity As FileSecurity = fInfo.GetAccessControl()

        ' Add the FileSystemAccessRule to the security settings. 
        fSecurity.AddAccessRule(New FileSystemAccessRule(Account, Rights, ControlType))

        ' Set the new access settings.
        fInfo.SetAccessControl(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)
        ' Create a new FileInfo object.
        Dim fInfo As New FileInfo(FileName)

        ' Get a FileSecurity object that represents the 
        ' current security settings.
        Dim fSecurity As FileSecurity = fInfo.GetAccessControl()

        ' Add the FileSystemAccessRule to the security settings. 
        fSecurity.RemoveAccessRule(New FileSystemAccessRule(Account, Rights, ControlType))

        ' Set the new access settings.
        fInfo.SetAccessControl(fSecurity)

    End Sub
End Module
'This code produces output similar to the following; 
'results may vary based on the computer/file structure/etc.:
'
'Adding access control entry for c:\test.xml
'Removing access control entry from c:\test.xml
'Done.
'

Comentários

Use o GetAccessControl método para recuperar as entradas da ACL (lista de controle de acesso) para o arquivo atual.Use the GetAccessControl method to retrieve the access control list (ACL) entries for the current file.

Uma ACL descreve indivíduos e/ou grupos que têm ou não têm direitos sobre ações específicas no arquivo fornecido.An ACL describes individuals and/or groups who have, or do not have, rights to specific actions on the given file. Para saber mais, confira Como adicionar ou remover entradas da lista de controle de acesso.For more information, see How to: Add or Remove Access Control List Entries.

Aplica-se a

GetAccessControl(AccessControlSections)

Obtém um objeto FileSecurity que encapsula o tipo especificado de entradas de ACL (lista de controle de acesso) do arquivo descrito pelo objeto FileInfo atual.Gets a FileSecurity object that encapsulates the specified type of access control list (ACL) entries for the file described by the current FileInfo object.

public:
 System::Security::AccessControl::FileSecurity ^ GetAccessControl(System::Security::AccessControl::AccessControlSections includeSections);
public System.Security.AccessControl.FileSecurity GetAccessControl (System.Security.AccessControl.AccessControlSections includeSections);
member this.GetAccessControl : System.Security.AccessControl.AccessControlSections -> System.Security.AccessControl.FileSecurity
Public Function GetAccessControl (includeSections As AccessControlSections) As FileSecurity

Parâmetros

includeSections
AccessControlSections

Um dos valores de AccessControlSections que especifica qual grupo de entradas de controle de acesso recuperar.One of the AccessControlSections values that specifies which group of access control entries to retrieve.

Retornos

FileSecurity

Um objeto FileSecurity que encapsula as regras de controle de acesso do arquivo atual.A FileSecurity object that encapsulates the access control rules for the current file.

Exceções

Um erro de E/S ocorreu ao abrir o arquivo.An I/O error occurred while opening the file.

A conta do sistema atual não tem privilégios administrativos.The current system account does not have administrative privileges.

Não foi possível encontrar o arquivo.The file could not be found.

Não há suporte para essa operação na plataforma atual.This operation is not supported on the current platform.

- ou --or-

O chamador não tem a permissão necessária.The caller does not have the required permission.

Comentários

Use o GetAccessControl método para recuperar as entradas da ACL (lista de controle de acesso) para o arquivo atual.Use the GetAccessControl method to retrieve the access control list (ACL) entries for the current file.

Uma ACL descreve indivíduos e/ou grupos que têm ou não têm direitos sobre ações específicas no arquivo fornecido.An ACL describes individuals and/or groups who have, or do not have, rights to specific actions on the given file. Para saber mais, confira Como adicionar ou remover entradas da lista de controle de acesso.For more information, see How to: Add or Remove Access Control List Entries.

Aplica-se a