The original adb-remount-test.sh when certifying kernels allowed a
pass on 4.4 kernels because it added new content, and missed a test
for overriding existing content. When the test was added to confirm
APEX control of libc.so, it serendipitously added a check for
overriding existing content, which the 4.4 kernel did not allow to
pass. Update the tests and documentation to reflect this new state
of affairs.
Summary: 4.4 kernel overlayfs driver worked partially without the
patch for override_creds.
Test: adb-remount-test.sh
Bug: 126256072
Change-Id: I979ea59a12bc0b9926826b9b09a7893ab3b9ee7f
Confusion has occurred with respect to the kernel patch requirements,
added some clarity.
Corrected some spelling mistakes in other areas.
Test: inspect gitties and run spell
Bug: 118225373
Change-Id: I4ff9497aa5a584b20e9cb2028342aa4e7e4660c3
Cleanup test issues with single super device. Indicate mount point
instead of partitions as that can lead to confusion when referencing
the partition when there is none. For example root (/) partition
uses overlay on /system. Resolve a script syntax error when there
are no devices. Fix script logic surrounding detection of overlayfs
takeover and handling of reboot device request from
adb disable-verity.
In README.overlayfs.md discuss
BOARD_<partitiion>IMAGE_PARTITION_RESERVED_SIZE and its negative
impact on right sizing.
Soften README.overlayfs.md wording with respect to update_engine
to match changes in handling.
Test: adb-remount-test.sh
Bug: 120536582
Bug: 109821005
Change-Id: Iad7e19a436322ff9c3bdc597f4545028be112ff5
When we have multiple physical super partitions, it is prudent to
take the alternate super physical partition in its raw entirety
rather than to construct a logical partition out of the current
super partition's limited remaining space.
SideEffect: alternate boot partitions destroyed for the sake of debug
Test: adb-remount-test.sh (including manually disabled to check
both code paths).
Bug: 119885423
Change-Id: I368d3a5619f69de3b0d1fcad73c4b42d25d0d969
Provide a means to determine if overlayfs is currently active with
fs_mgr_overlayfs_is_setup(). Search for current clues in the system
that the overrides are in play. If /mnt/scratch/ is mounted, that
may be enough of a smoking gun because the resource itself may
interfere with operations.
Related to update_engine calling this function to reject performing
an OTA as its operations are incompatible with the overrides.
Test: adb-remount-test.sh
Bug: 120034852
Change-Id: I641163b1559c1a83fe7d0c336d04c10e9956ad3a
Found a device with a 3/4MB erase block, give a wider margin so that
flashing a single partition is unlikely to be blocked by scratch.
Add documentation to tell developers to flashall to clear scratch.
Test: adb-remount-test.sh
Bug: 109821005
Change-Id: Ic219283f4c42e457b98991bcd1752253e182eff3
