tree 5b27cc6323b75465bb5965378c6c4ec86d175d1a
parent cda3c034bc46a4040dcd31a3a512ffd56dfe28c2
author Tao Bao <tbao@google.com> 1554247503 -0700
committer Tao Bao <tbao@google.com> 1554254265 -0700

Abort the payload generation on extract_image errors.

extract_image, in particular extract_image_brillo, spawns multiple
processes to handle the unzipping and unsparsing works in parallel.
However, `wait` doesn't abort the execution on child process errors.

This CL tracks the PIDs of the worker processes. It then waits for each
individual PID and aborts appropriately. No-op for the CrOS path.

Bug: 129773355
Test: Inject error into simg2img. brillo_update_payload aborts.
Change-Id: Id87aa5216fee7e9db132b7f7947742d2ac11b2bc