This is needed so "adb remount" can avoid writing to /data during a
checkpoint.
Bug: 157540389
Test: manual test
Change-Id: I33a691da3b99343acfc1e8ddf68a14504c3bfbe1
Merged-In: I33a691da3b99343acfc1e8ddf68a14504c3bfbe1
It will be used by userspace reboot to reset checkpoint state, to make
sure that when /data is remounted, it will be remounted in checkpointing
if a checkpoint was requested beforee userspace reboot.
Test: /system/bin/vdc startCheckpoint 1
/system/bin/vdc needsCheckpoint (returns 0)
/system/bin/vdc resetCheckpoint
/system/bin/vdc needsCheckpoint (returns 1)
Bug: 135984674
Change-Id: Ia29238686289b4eed93e2fb936a8b3d894b94dc9
abortChanges will attempt to pass a reboot message, and will only reboot
if the device is currently checkpointing. Additionally, it can opt to
attempt to prevent future attempts. This only works for non-bootloader
controlled updates. Failures are ignored, as it will always reboot the
device. In the unlikely event of such a failure, the device will
continue to retry as though you did not ask to prevent future attempts.
Test: vdc checkpoint abortChanges abort_retry_test 1
vdc checkpoint abortChanges abort_noretry_test 0
Change-Id: I7b6214765a1faaf4fd193c73331696b53ae572d2
Also add vdc checkpoint supportsFileCheckpoint
This is to allow tests to be specific to supported checkpoint mode.
Test: Built on Taimen and Crosshatch, made sure both new functions work
as expected
Change-Id: I0eab7453b13c0a2e31840ef9ad24a692cec55b00
Restores the first n entries of a checkpoint. Allows automated testing
of interrupted restores.
Test: vdc checkpoint restoreCheckpoint [device] [n]
Change-Id: I47570e8eba0bc3c6549a04a33600df05d393990b
This returns true if any entries in the fstab have checkpoint=
set.
Test: Call vdc checkpoint supportsCheckpoint. Should return 1
iff an fstab entry has checkpoint=fs or checkpoint=block set
Bug: 111020314
Change-Id: Ic79bc96ded4da6605f73992dcff542e7cb50d705
This switches the checkpoint calls that don't need to return a value
to return 0 on success, and an error on failure. This will be transalted
to exceptions for java binder users. needsCheckpoint and needsRollback
still return a boolean value.
Test: vdc setCheckpoint 2 then reboot 3 times checking state
Bug: 112901762
Change-Id: Idd3b5e6036631562a86d5123f533b86cf3bd6032
Merged-In: Idd3b5e6036631562a86d5123f533b86cf3bd6032
This adds implicit rollback support during A/B style updates.
If you explicitly start a checkpoint with -1, needsRollback will
trigger if the update fails, and should be used if any additional
cleanup is needed that is not covered by A/B itself.
Test: All Checkpoint tests pass
Bug: 111020314
Change-Id: I88b4a1098c6bac4dc1438a54c8a8f59577a6c17b
Checkpointing uses a combination of files on the meta partition
and the checkpoint= fs_mgr flag. Checkpointed partitions will
revert to their starting state on reboot unless checkpoint commit
is called.
Test: Run vdc commands, check file on metadata
Merged-In: Icba16578608a6cbf922472e9d4ae5b8cf5f016c6
Change-Id: Icba16578608a6cbf922472e9d4ae5b8cf5f016c6
David Anderson
Nikita Ioffe
Daniel Rosenberg
Paul Lawrence