This change introduces an IPartitionOpener abstraction. Methods that
interact with live metadata, such as ReadMetadata, UpdatePartitionTable,
and FlashPartitionTable, now require an IPartitionOpener object. Its
purpose is dependency injection: it will make these methods much easier
to test when the super partition spans multiple block devices.
All non-test consumers should be using PartitionOpener, and as such,
some helper methods have been added that automatically create one.
Bug: 116802789
Test: liblp_test gtest
device with super partition boots
Change-Id: I76725a5830ef643c5007c152c00ccaad8085151f
Logical partition metadata has "slots" for AB purposes, but when
flashing or updating the partition table via fastboot, there is no
reason not to synchronize all copies of the metadata. It makes the state
of the super partition much more clear. It also makes the super
partition less likely to break on a slot change from the user, for
example if a "_b" partition is created before changing to the "b" slot.
Bug: 78793464
Test: liblp_test gtest
Change-Id: I3c44f0362f21f87d0bfc3a5c3394e26dc3dd38be
This is in preparation for adding sparse image support, to avoid
cluttering the more critical reading and writing logic.
Bug: 79173901
Test: N/A
Change-Id: Icdddb849aebba4adf18a3e63ffbd3f36adda812d
This changes reader.h and writer.h to be private includes. A new liblp.h
header now contains the public API surface of those two files, as well
as some miscellanious functions previously in metadata_format.h.
Bug: 79173901
Test: N/A
Change-Id: I40c5dda0c8e5765f8bccfd5c17b4c800b41be77b
David Anderson