tree 09b0a043fa26ebee5c3a85876f8baa9ed63e3a50
parent ed9cc18eb7746c7f65a68e15a276472aa2176ab1
author Alex Deymo <deymo@google.com> 1466033464 -0700
committer Alex Deymo <deymo@google.com> 1466102666 +0000

Show the name of the BLK* ioctl failure instead of the number.

The ioctl number is normally tied to the platform and doesn't allow a
quick debug of what was supported. This patch prints the name instead
of the error number.

Bug: 28744609
TEST=Deployed an update on Android and saw the ioctl names instead of numbers.

Change-Id: Ie3a69841f3bf9cd719ead0cdc80e82d2c4725c68