• Mark Salyzyn's avatar
    recovery: use __android_log_pmsg_file_write for log files · a4f701af
    Mark Salyzyn authored
    - Add call to __android_log_pmsg_file_write for recovery logging.
    - Add call to refresh pmsg if we reboot back into recovery and then
      allow overwrite of those logs.
    - Add a new one-time executable recovery-refresh that refreshes pmsg
      in post-fs phase of init. We rely on pmsg eventually scrolling off
      to age the content after recovery-persist has done its job.
    - Add a new one-time executable recovery-persist that transfers from
      pmsg to /data/misc/recovery/ directory if /cache is not mounted
      in post-fs-data phase of init.
    - Build and appropriately trigger the above two as required if
      BOARD_CACHEIMAGE_PARTITION_SIZE is undefined.
    - Add some simple unit tests
    
    NB: Test failure is expected on systems that do not deliver either
    the recovery-persist or recovery-refresh executables, e.g. systems
    with /cache. Tests also require a timely reboot sequence of test
    to truly verify, tests provide guidance on stderr to direct.
    
    Bug: 27176738
    Change-Id: I17bb95980234984f6b2087fd5941b0a3126b706b
    a4f701af
recovery-persist.rc 116 Bytes