This change will help non-user builds with keeping debugfs
disabled during run time. Instead, debugfs will be mounted by init
to enable boot time initializations to set up vendor debug data
collection and unmounted after boot. It will be also be mounted by
dumpstate for bug report generation and unmounted after.
This change is only intended to help vendors (who depend on debugfs to
collect debug information from userdebug/eng builds) keep debugfs
disabled during runtime. Platform code must not depend on debugfs at all.
Test: manual
Bug: 176936478
Change-Id: I2e89d5b9540e3de094976563682d4b8c5c125876
* changes:
libsnapshot: Fix tests that depend on PrepareOneSnapshot().
libsnapshot: Ensure dm-user devices are destroyed after a merge.
libsnapshot: Fix tests for mapping snapshots in first-stage init.
init: Add an selinux transition for snapuserd.
PrepareOneSnapshot was hardcoded in a way that only worked with
pre-compression devices. This patch makes it use the public API and
supported update flow.
One test, SnapshotTest.Merge, now uses OpenSnapshotWriter instead of
MapUpdateSnapshot. There are still other tests using the old API call.
Bug: N/A
Test: vts_libsnapshot_test
Change-Id: Iec4bf6efe6a82e1f90b81fa4211201845ebabe62
Also, make sure snapuserd has closed its references. This is preventing
the merge from completing until a reboot.
Bug: N/A
Test: vts_libsnapshot_test
Change-Id: Iba18f887bdb262c630ec44461871e19fe64dbf3c
These tests are failing due to a missing WaitForFile call. Simplify
setting this up by adding a helper.
Bug: N/A
Test: vts_libsnapshot_test
Change-Id: Ic2afa74f72c7e364695233120b2327bae904882a
After Treblized, AOSP do not handle /factory folder. Also, AOSP
does not mount any partition to /factory. /factory has no possibility
to have any content. For factory purpose, it can be implemented in
vendor.
Bug: 177280838
Test: na
Change-Id: I0a2537336c2ef1efbad3e4f9e876aeaa607bc737
If the requested IO is not 4k aligned and spans
between two COW Operations, then we will have
to split the IO as we need to read the partial
buffers from two COW operations.
BUG: 176918488
Test: cow_snapuserd_test - Data verification with unaligned IO
Full OTA on cuttlefish
Signed-off-by: Akilesh Kailash <akailash@google.com>
Change-Id: Icf6801e1767112b92cb7991808860f119adebda2
Now that the feature guarded by this flag has landed in Linux 5.10
we no longer need the flag, so we can remove it.
Bug: 135772972
Change-Id: I02fa50848cbd0486c23c8a229bb8f1ab5dd5a56f
With compressed VAB updates, it is not possible to mount /system without
first running snapuserd, which is the userspace component to the dm-user
kernel module. This poses a problem because as soon as selinux
enforcement is enabled, snapuserd (running in a kernel context) does not
have access to read and decompress the underlying system partition.
To account for this, we split SelinuxInitialize into multiple steps:
First, sepolicy is read into an in-memory string.
Second, the device-mapper tables for all snapshots are rebuilt. This
flushes any pending reads and creates new dm-user devices. The original
kernel-privileged snapuserd is then killed.
Third, sepolicy is loaded from the in-memory string.
Fourth, we re-launch snapuserd and connect it to the newly created
dm-user devices. As part of this step we restorecon device-mapper
devices and /dev/block/by-name/super, since the new snapuserd is in a
limited context.
Finally, we set enforcing mode.
This sequence ensures that snapuserd has appropriate privileges with a
minimal number of permissive audits.
Bug: 173476209
Test: full OTA with VABC applies and boots
Change-Id: Ie4e0f5166b01c31a6f337afc26fc58b96217604e
This directory will be used to store the mitigation count
from Package Watchdog in the case of a boot loop, in
order to persist the value across fs-checkpointing
rollbacks. One integer will be stored in a file in this
directory, which will be read and then deleted at the
next boot. No userdata is stored.
See go/rescue-party-reboot for more context.
Test: Manual test using debug.crash_sysui property
and inspecting file
Bug: 171951174
Change-Id: I2bd5e1ebe14d7e9e4f0e0dbeb90cf76b8400752e
