Examples of java.nio.file.attribute.PosixFileAttributes

java.nio.file.attribute.PosixFileAttributes
File attributes associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards.
The POSIX attributes of a file are retrieved using a {@link PosixFileAttributeView} by invoking its {@link PosixFileAttributeView#readAttributes readAttributes} method. @since 1.7

   * @throws IOException 
   */
  public static void main(String[] args) throws IOException {
    Path filePath = Paths.get("file.txt");
    
    PosixFileAttributes attributes = 
        Files.readAttributes(filePath, PosixFileAttributes.class);
    
    // To read permissions - file should exist!!! Otherwise
    // java.nio.file.NoSuchFileException is thrown.
    Set<PosixFilePermission> posixPermissions = attributes.permissions();
    for (PosixFilePermission posixPermission : posixPermissions) {
      System.out.println(posixPermission);
    }


    Path newFilePath = Paths.get("new//directory//file.txt");

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    public Java7FileAttributes( File file, Map<Integer, String> userCache, Map<Integer, String> groupCache )
        throws IOException
    {


        PosixFileAttributes posixFileAttributes = getPosixFileAttributes( file );


        Integer uid = (Integer) Files.readAttributes( file.toPath(), "unix:uid" ).get( "uid" );
        String userName = userCache.get( uid );
        if ( userName != null )
        {
            this.userName = userName;
        }
        else
        {
            this.userName = posixFileAttributes.owner().getName();
            userCache.put( uid, this.userName );
        }
        Integer gid = (Integer) Files.readAttributes( file.toPath(), "unix:gid" ).get( "gid" );
        String groupName = groupCache.get( gid );
        if ( groupName != null )
        {
            this.groupName = groupName;
        }
        else
        {
            this.groupName = posixFileAttributes.group().getName();
            groupCache.put( gid, this.groupName );
        }


        setLsModeParts( PosixFilePermissions.toString( posixFileAttributes.permissions() ).toCharArray() );
    }

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      Map<String, String[]> attributes = new HashMap<String, String[]>();


      PosixFileAttributeView posixView = Files.getFileAttributeView(path, PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
      if (posixView != null) {
        final PosixFileAttributes attr = posixView.readAttributes();
        if (type.equals(ItemType.LINK)) {
          attributes.put(Item.ATTRIBUTE_POSIX, new String[] { attr.group().getName(), attr.owner().getName() });
        } else {
          attributes.put(Item.ATTRIBUTE_POSIX, new String[] { attr.group().getName(), attr.owner().getName(), fromPermissions(attr.permissions()).toString() });
        }
      } else {


        DosFileAttributeView dosView = Files.getFileAttributeView(path, DosFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
        if (dosView != null) {
          final DosFileAttributes attr = dosView.readAttributes();
          attributes.put(Item.ATTRIBUTE_DOS, new String[] { attr.isArchive() ? "1" : "0", attr.isHidden() ? "1" : "0", attr.isReadOnly() ? "1" : "0", attr.isSystem() ? "1" : "0" });
        }
      }


      if (!type.equals(ItemType.LINK)) {

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  }


  static Attributes getFileAttributesPosix(FS fs, File path) {
    try {
      Path nioPath = path.toPath();
      PosixFileAttributes readAttributes = nioPath
          .getFileSystem()
          .provider()
          .getFileAttributeView(nioPath,
              PosixFileAttributeView.class,
              LinkOption.NOFOLLOW_LINKS).readAttributes();
      Attributes attributes = new FileUtil.Java7BasicAttributes(
          fs,
          path,
          true, //
          readAttributes.isDirectory(), //
          readAttributes.permissions().contains(
              PosixFilePermission.OWNER_EXECUTE),
          readAttributes.isSymbolicLink(),
          readAttributes.isRegularFile(), //
          readAttributes.creationTime().toMillis(), //
          readAttributes.lastModifiedTime().toMillis(),
          readAttributes.size());
      return attributes;
    } catch (NoSuchFileException e) {
      return new FileUtil.Java7BasicAttributes(fs, path, false, false,
          false, false, false, 0L, 0L, 0L);
    } catch (IOException e) {

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    assertNotNull(view);


    assertThat(view.name()).isEqualTo("posix");
    assertThat(view.getOwner()).isEqualTo(createUserPrincipal("user"));


    PosixFileAttributes attrs = view.readAttributes();
    assertThat(attrs.fileKey()).isEqualTo(0);
    assertThat(attrs.owner()).isEqualTo(createUserPrincipal("user"));
    assertThat(attrs.group()).isEqualTo(createGroupPrincipal("group"));
    assertThat(attrs.permissions()).isEqualTo(PosixFilePermissions.fromString("rw-r--r--"));


    view.setOwner(createUserPrincipal("root"));
    assertThat(view.getOwner()).isEqualTo(createUserPrincipal("root"));
    assertThat(file.getAttribute("owner", "owner")).isEqualTo(createUserPrincipal("root"));

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        PosixFilePermissions.fromString("rwx------"));
  }


  @Test
  public void testAttributes() {
    PosixFileAttributes attrs = provider.readAttributes(file);
    assertThat(attrs.permissions()).isEqualTo(PosixFilePermissions.fromString("rw-r--r--"));
    assertThat(attrs.group()).isEqualTo(createGroupPrincipal("group"));
    assertThat(attrs.fileKey()).isEqualTo(0);
  }

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  public static void main(String[] args) {
    try {
      Path profile = Paths.get("/user/Admin/.profile");


      PosixFileAttributes attrs = Files.readAttributes(profile,
          PosixFileAttributes.class);


      Set<PosixFilePermission> posixPermissions = attrs.permissions();
      posixPermissions.clear();


      String owner = attrs.owner().getName();
      String perms = PosixFilePermissions.toString(posixPermissions);
      System.out.format("%s %s%n", owner, perms);


      posixPermissions.add(OWNER_READ);
      posixPermissions.add(GROUP_READ);

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        fileProperties.dosAttributes = FileUtil.dosAttrsToString(dosAttrs);


        fileAttributes = dosAttrs;
      }
      else if (EnvironmentUtil.isUnixLikeOperatingSystem()) {
        PosixFileAttributes posixAttrs = Files.readAttributes(filePath, PosixFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
        fileProperties.posixPermissions = PosixFilePermissions.toString(posixAttrs.permissions());


        fileAttributes = posixAttrs;
      }
      else {
        fileAttributes = Files.readAttributes(filePath, BasicFileAttributes.class, LinkOption.NOFOLLOW_LINKS);

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import static org.gradle.internal.nativeintegration.filesystem.jdk7.PosixFilePermissionConverter.convertToPermissionsSet;


public class PosixJdk7FilePermissionHandler implements FileModeAccessor, FileModeMutator {


    public int getUnixMode(File file) throws IOException {
        final PosixFileAttributes posixFileAttributes = Files.readAttributes(file.toPath(), PosixFileAttributes.class);
        return convertToInt(posixFileAttributes.permissions());
    }

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