tree 4c867e08c59abac123bd152eeb7a5f75486e572a
parent d71ae5b5797a304ccbef863ee71dd873da965bc0
author Kees Cook <keescook@chromium.org> 1374781841 -0700
committer ChromeBot <chrome-bot@google.com> 1375124524 -0700

image_to_usb: actually fail if umount fails

Unmount failures were being masked by the "| grep" for the chroot helper
message. Remove all of this, since it is critical that the umount
failure stop the script. Otherwise we'll end up with corrupted images
from situations like the Ubuntu automounter.

BUG=None
TEST=attempted image writing with an automounted drive

Change-Id: I171a0f298688f56df3a34384b0cc2052e97f8d85
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/63377
Reviewed-by: Marc MERLIN <merlin@chromium.org>