EINTR handling and debugging for error cases

Some interruptable syscalls were not wrapped with TEMP_FAILURE_RETRY
while others were. Add them where necessary.

Additionally, some error cases were not logging any messages so things
would mysteriously fail if there was an underlying filesystem problem.

Change-Id: I0b789376b2971fa8aaaff7eac21a90a9a94afac8
1 file changed
tree: 522817e70b772843a6d9055e535595d4ac8e0d67
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/