The project util-linux doesn't use the same license for all of the code. There is code under: * GPLv2+ (GNU General Public License version 2, or any later version) * GPLv2 (GNU General Public License version 2) * LGPLv2+ (GNU Lesser General Public License v2 (or 2.1) or any later version) * BSD with advertising * Public Domain Please, check the source code for more details. A license is usually at the start of each source file. The ./COPYING file (GPLv2+) is the default license for code without an explicitly defined license.