Access Event

Fires when the OS needs to check file access permissions.

Syntax

• C#
• VB.NET

public event OnAccessHandler OnAccess;

public delegate void OnAccessHandler(object sender, FuseAccessEventArgs e);

public class FuseAccessEventArgs : EventArgs {
  public string Path { get; }
  public int Mask { get; }
  public int Result { get; set; }
}

Public Event OnAccess As OnAccessHandler

Public Delegate Sub OnAccessHandler(sender As Object, e As FuseAccessEventArgs)

Public Class FuseAccessEventArgs Inherits EventArgs
  Public ReadOnly Property Path As String
  Public ReadOnly Property Mask As Integer
  Public Property Result As Integer
End Class

Remarks

Windows:

This event fires when the OS needs to know whether the file or directory specified in Path can be deleted. For this, the Mask parameter is set to 2 (W_OK).

The application must return 0 in the Result parameter to indicate that deletion is permitted, or an error code otherwise.

Linux:

This event fires when the OS needs to check access permissions of the file or directory specified in Path. Specifically, the event fires when a process uses the access() system call.

The application must return 0 in the Result parameter to indicate that access, requested by the Mask parameter is permitted, or -EACCES to indicate that access is denied.

If the event cannot be handled in a "successful" manner for some reason (e.g., a resource isn't available, security checks failed, etc.), set it to a negative error code value (e.g. -ENOENT to indicate that the file does not exist) to report an appropriate error. Please refer to the Error Reporting and Handling topic for more information.