* changes:
snapuserd: Factor a base class out of tests.
snapuserd: Add error propagation to tests.
snapuserd: Add diagnostics for debugging races.
snapuserd: Fix race condition in HandleManager shutdown.
snapuserd: Remove test dependence on LoopDevice.
This factors a lighter weight class out of SnapuserdTest, so we can
construct tests without needing a HandlerManager/daemon.
Bug: 288273605
Test: snapuserd_test
Change-Id: Ib33dc593a5b3d3df86853e73f245918ef36fd9fa
snapuserd_test in general doesn't propagate errors, which means the
first failure will cascade into many failures. This can make it harder
to figure out what's going on.
Unfortunately error propagation is difficult with gtest, since bool
returns don't work with ASSERT_EQ and Android doesn't use exceptions.
Use ASSERT_NO_FATAL_FAILURE for now, since that is the least invasive
change.
Bug: 288273605
Test: snapuserd_test
Change-Id: I6550682fd63602bc15649f705def2915f6329357
Adds calls to pthread_setname_np for each thread.
Clarify error messages from io_uring calls that return -errno.
Add log messages for some failure paths that didn't have any.
Add an ostream overload for MERGE_IO_TRANSITION, and add an INVALID
state for initialization.
Bug: 288273605
Test: builds
Change-Id: Ic0681cbf0017af67bcf52b98db184a9b48752faf
When HandlerManager shuts down, the monitor thread is left detached. The
monitor thread does not hold a shared_ptr reference to the
HandlerManager, so the pointer can be left dangling.
Fix this by not detaching the monitor merge thread.
This patch also changes the test harness to destroy
SnapshotHandlerManager on "shutdown", to avoid state leaking into the
next instance of snapuserd.
Bug: 288273605
Test: snapuserd_test
Change-Id: Iaaf96a37657c85cff4d2a8b15ccfde4aa03d3220
LoopDevice requires root, which is an obstacle to running this test in
automation. The test also requires memfd which is not available in our
included glibc. Create an IBackingDevice layer so we can use temporary
files instead on host tests, while keeping the block-device code for
on-device tests, which more closely matches how snapuserd runs.
Bug: 288273605
Test: snapuserd_test
Change-Id: I89b154921b6bbcf8fe213ef7f5c4da4d48322909
* changes:
snapuserd: Factor setpriority/settid calls into a helper.
snapuserd: Add a harness to run tests without dm-user specific code.
snapuserd: Add an IBlockServerFactory abstraction.
* changes:
snapuserd: Remove dm-user specific code from ReadWorker.
snapuserd: Add an IBlockServer abstraction around dm-user.
snapuserd: Rename snapuserd_merge to merge_worker.
This allows disabling the code in host builds, since settid() isn't
available in the glibc prebuilt.
Bug: 288273605
Test: snapuserd_test
Change-Id: Ifddb5cb8b04484a1ab0a29794d65c9839759a919
This patch adds an abstraction layer around Tempdevice (which wraps
device-mapper), and a layer to replace hardcoding of DmUserBlockServer.
The only implementation of the new layer, currently, is for dm-user.
However this will allow the harness to run with a backend chosen at
runtime, making testing on the host or of ublk much easier.
Bug: 288273605
Test: snapuserd_test
Change-Id: I8735ef6c373f3e5c5cdf3df461668ddd8e551f63
To avoid SnapshotHandler hardcoding specifics about dm-user, this patch
adds a factory interface, responsible for providing IBlockServerOpener
objects.
The test harness will use this to facilitate dm-user-less testing on
host devices.
Bug: 288273605
Test: snapuserd_test
Change-Id: Ifd33c28ee7076f30a8a90f745353893188f97a08
BufferSink is not needed/used in all worker types, so move it explicitly
to MergeWorker. This also moves the sizeof(dm_user_header) computation
to BufferSink::Initialize.
Bug: 288273605
Test: snapuserd_test
Change-Id: I8fcea6f0e587ca6d8672df5ec58c4d4d14d4b72e
This adds the planned interface that will abstract around dm-user (for
now), and later ublk at which point it can be adjusted as needed.
This declares the interface and implements it, but does not yet switch
snapuserd to use it. The implementation is copied from read_worker.cpp.
Bug: 288273605
Test: snapuserd_test
Change-Id: I060788c91dba78e52d315b5616b84b37eaf4040f
* With platform-tools-34.0.4 if you try to wipe data
as apart of the fastboot update command it will not
work, will just reboot to userspace without running
the wipe task.
Test: fastboot -w update image.zip, observe that data
gets wiped. Also verified 'fastboot update image.zip'
does *not* wipe data.
Change-Id: I57a2c64029fd4f78968324bdf60251e1e962b3fd
Calling this in snapuserd_core fails when the base path is a regular
file. Since the value is only read once, just call it from
snapuserd_server instead, which also means we don't have to add an
S_ISBLK check here.
Bug: 288273605
Test: snapuserd_test
Change-Id: Ic26bf807b24611f2d97829d1b4eb1d0ede2feb6a
The only function we use from libfs_mgr is WaitForFile, so factor that
out into libfs_mgr_file_wait. libfs_mgr has too much dependence on AOSP
internals to build on the host.
Bug: 288273605
Test: builds
Change-Id: I8e5eb4075ae01b9ca64074422171a487179e7943
We don't need this on the host, since the host will not be running
snapuserd as a server. Rename it for clarity and remove it where we can.
Bug: 288273605
Test: snapuserd_test
Change-Id: I679ef668a89411c670fea8d3b758bde589623548
