def list_holds(pattern=__HOLD_PATTERN, full=True):
    r'''
    .. versionchanged:: 2016.3.0,2015.8.4,2015.5.10
        Function renamed from ``pkg.get_locked_pkgs`` to ``pkg.list_holds``.

    List information on locked packages

    .. note::
        Requires the appropriate ``versionlock`` plugin package to be installed:

        - On RHEL 5: ``yum-versionlock``
        - On RHEL 6 & 7: ``yum-plugin-versionlock``
        - On Fedora: ``python-dnf-plugins-extras-versionlock``

    pattern : \w+(?:[.-][^-]+)*
        Regular expression used to match the package name

    full : True
        Show the full hold definition including version and epoch. Set to
        ``False`` to return just the name of the package(s) being held.


    CLI Example:

    .. code-block:: bash

        salt '*' pkg.list_holds
        salt '*' pkg.list_holds full=False
    '''
    _check_versionlock()

    out = __salt__['cmd.run']([_yum(), 'versionlock', 'list'],
                              python_shell=False)
    ret = []
    for line in salt.utils.itertools.split(out, '\n'):
        match = _get_hold(line, pattern=pattern, full=full)
        if match is not None:
            ret.append(match)
    return ret