tree da775f602c6c62e3fc54c6a119e2963456ddf4db
parent 69d5567bd988ec29eca5b974ea7dd58cfca017e0
author Milton D. Miller II <miltonm@us.ibm.com> 1464047070 -0500
committer Milton Miller <miltonm@us.ibm.com> 1466636203 -0500

initfs: shutdown: comment on update success

Print an error from the shutdown script when the update fails.

Update is changing to return codes when its preconditions are not
met, so be more verbose about its success to provide a means to
debug flash updates not occurring.

We could add a sulogin or sushell but its not clear what would be
desired here.  If so the message should include "rmdir /oldroot
to get a PID 1 shell" like /takever works in init.

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