commit ee91f8da7d23486148f6abff3b7cf95a053acf94
author Milton D. Miller II <miltonm@us.ibm.com> Mon Feb 29 11:39:11 2016 -0600
committer Milton D. Miller II <miltonm@us.ibm.com> Fri Mar 04 10:51:02 2016 -0600
tree a5b88fc99243dc6131375f422ead88ce3fcd8c28
parent 517f9d7f4e245769fcdaac995168daee8f0b3cd6

update: Read whitelist from the /run/initramfs directory

Find the whitelist under /run/initramfs directory instead of
looking in root directory.  This results in the whitelist always
existing and being the same instance (copy) in all environments.

Currently the update script is invoked from two places: from
shutdown, where systemd bind-mounted the initramfs directory on
itself and made it root (with its parent /run mounted underneath
it in a twist), and from the initramfs init script where it
copied the files from its root directory into the /run/initramfs
directory for use at shutdown time when the original rootfs is
no longer reachable.

By looking under /run/initramfs we will always look at one copy
of the whitelist.  This will also allow future modes where the
update script can be invoked while running from a copies of
the file systems located in RAM.

Signed-off-by: Milton Miller <miltonm@us.ibm.com>