Managing ACL file permissions - Java File Path IO

Java examples for File Path IO:ACL File

  1. HOME
  2. Java
  3. File Path IO
  4. ACL File

Description

Managing ACL file permissions

Demo Code

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.AclEntry;
import java.nio.file.attribute.AclEntryFlag;
import java.nio.file.attribute.AclEntryPermission;
import java.nio.file.attribute.AclFileAttributeView;
import java.util.List;
import java.util.Set;

public class Main {
  public static void main(String[] args) throws Exception {
    Path path = Paths.get("C:/home/docs/users.txt");
    AclFileAttributeView view = Files.getFileAttributeView(path,
        AclFileAttributeView.class);
    List<AclEntry> aclEntryList = view.getAcl();
    displayAclEntries(aclEntryList);/*w  ww.  j  a va  2 s  .  com*/
  }

  private static void displayAclEntries(List<AclEntry> aclEntryList) {
    System.out.println("ACL Entry List size: " + aclEntryList.size());
    for (AclEntry entry : aclEntryList) {
      System.out.println("User Principal Name: " + entry.principal().getName());
      System.out.println("ACL Entry Type: " + entry.type());
      displayEntryFlags(entry.flags());
      displayPermissions(entry.permissions());
      System.out.println();
    }
  }

  private static void displayPermissions(Set<AclEntryPermission> permissionSet) {
    if (permissionSet.isEmpty()) {
      System.out.println("No Permissions present");
    } else {
      System.out.println("Permissions");
      for (AclEntryPermission permission : permissionSet) {
        System.out.print(permission.name() + " ");
      }
      System.out.println();
    }
  }

  private static void displayEntryFlags(Set<AclEntryFlag> flagSet) {
    if (flagSet.isEmpty()) {
      System.out.println("No ACL Entry Flags present");
    } else {
      System.out.println("ACL Entry Flags");
      for (AclEntryFlag flag : flagSet) {
        System.out.print(flag.name() + " ");
      }
      System.out.println();
    }
  }
}

Related Tutorials