How to use

checkAccess

method

in

net.java.truevfs.kernel.spec.FsController

@Override
public void checkAccess(
    BitField<FsAccessOption> options,
    FsNodeName name,
    BitField<Access> types)
throws IOException {
  controller.checkAccess(options, name, types);
}

@Override
public final void checkAccess(BitField<FsAccessOption> options, FsNodeName name, BitField<Access> types) throws IOException {
  controller.checkAccess(map(options), name, types);
}

@Override
@FsAssertion(atomic=YES, consistent=YES, isolated=YES, durable=NOT_APPLICABLE)
public boolean canRead() {
  if (null != innerArchive) {
    try {
      innerArchive.getController().checkAccess(
          getAccessPreferences(), getNodeName(),
          READ_ACCESS);
      return true;
    } catch (IOException ex) {
      return false;
    }
  }
  return file.canRead();
}

@Override
@FsAssertion(atomic=YES, consistent=YES, isolated=YES, durable=NOT_APPLICABLE)
public boolean canWrite() {
  if (null != innerArchive) {
    try {
      innerArchive.getController().checkAccess(
          getAccessPreferences(), getNodeName(),
          WRITE_ACCESS);
      return true;
    } catch (IOException ex) {
      return false;
    }
  }
  return file.canWrite();
}

@Override
@FsAssertion(atomic=YES, consistent=YES, isolated=YES, durable=NOT_APPLICABLE)
public boolean canExecute() {
  if (null != innerArchive) {
    try {
      innerArchive.getController().checkAccess(
          getAccessPreferences(), getNodeName(),
          EXECUTE_ACCESS);
      return true;
    } catch (IOException ex) {
      return false;
    }
  }
  return file.canExecute();
}

/**
 * {@inheritDoc}
 *
 * @see <a href="#falsePositives">Detecting Archive Paths and False Positives</a>
 */
@Override
@FsAssertion(atomic=YES, consistent=YES, isolated=YES, durable=NOT_APPLICABLE)
public boolean exists() {
  // DONT test existance of getNodeName() in enclArchive because
  // it doesn't need to exist - see
  // http://java.net/jira/browse/TRUEZIP-136 .
  if (null != innerArchive) {
    try {
      innerArchive.getController().checkAccess(
          getAccessPreferences(), getNodeName(),
          NO_ACCESS);
      return true;
    } catch (IOException ex) {
      return false;
    }
  }
  return file.exists();
}

void checkAccess(final TPath path, final AccessMode... modes)
throws IOException {
  final FsNodeName name = path.getNodeName();
  final BitField<FsAccessOption> options = path.getAccessPreferences();
  final BitField<Access> types = types(modes);
  getController().checkAccess(options, name, types);
}

@Override
public void checkAccess(
    final BitField<FsAccessOption> options, final FsNodeName name, final BitField<Access> types)
throws IOException {
  try {
    controller.checkAccess(options, name, types);
  } catch (final ControlFlowException ex) {
    if (!name.isRoot() || null == findKeyException(ex))
      throw ex;
    getParent().checkAccess(
        options, getModel()
               .getMountPoint()
               .getPath()
               .resolve(name)
               .getNodeName(),
        types);
  }
}