1. d741f56 env: Allow env_attr_walk to pass a priv * to callback by Joe Hershberger · Wed May 20 14:27:19 2015 -0500
  2. d79de1d Add GPL-2.0+ SPDX-License-Identifier to source files by Wolfgang Denk · Mon Jul 08 09:37:19 2013 +0200
  3. 60fd3ad env: Add support for callbacks to environment vars by Joe Hershberger · Tue Dec 11 22:16:24 2012 -0600