tree a260a9fbe6df1d24d87b8107d0216e292d61dba9
parent d253835c3a02995e773be8ef1827d588013f10b7
author Graziano Misuraca <gmisuraca@tesla.com> 1493924005 -0700
committer Treehugger Robot <treehugger-gerrit@google.com> 1495126858 +0000

Add optional signal forwarder and '-z' option to cli

Add a 'forward_signal' option to the minijail configuration struct that
defaults to false, but when set installs a signal handler in the parent
process that forwards any signal received (except SIGCHLD) to the jailed
child process.

The minijail0 cli defaults to having this setting enabled, but called
with the `-z` option this is disabled.

This is used to make daemon management (e.g. with `sv`) easier, since
otherwise SIGTERM on minijail0 just orphans the true service.

Change-Id: Ide0471511a4242839e3c8a34795e5a297b6ef57a