vold already reads the default fstab into memory when starting up, and
the default fstab isn't allowed to change later. So in IdleMaint.cpp,
just use 'fstab_default' instead of reading it again.
This also has the advantage that fstab entries for "logical partitions"
now get a properly updated blk_device, which is needed in order to start
using blk_device to exclude virtual filesystems in addFromFstab().
Change-Id: Id6457a2b7972d01dde4bca0c5f2da86374d930af
This is needed so "adb remount" can avoid writing to /data during a
checkpoint.
Bug: 157540389
Test: manual test
Change-Id: I33a691da3b99343acfc1e8ddf68a14504c3bfbe1
When the partition is f2fs and the OS is 32bit, the data.f_bavail and
data.f_frsize are 32 bits in size. The product of them is also 32 bits
in size. If the available size of storage is greater than 4G, the
product may be greater than the unsigned long max value. If the product
is overflow and less than 100M. The UDC feature will be disabled.
There is also an overflow for std::strtoul when the variable content
is a very big number(more the unsigned long max value).
To avoid the overflow:
1. convert the variable data.f_bavvail to uint64_t and then compute the
multiplication.
2. use std::strtoull replace to std::strtoul.
Bug: 147118861
Change-Id: I60172ae4cb7c997e2ad4a36583be74736c25e565
The property is set to inform kernel to do a warm_reset on the next
reboot. This is useful to persist the logs to debug device boot
failures. After the slot has been marked as boot successful, we can drop
the warm_reset flag to avoid the performance overhead on the next
reboot.
Bug: 143489994
Test: check the property is set to 0 by vold
Change-Id: If7c922f40bcf9a6f7894af0a334ab23d88d40d17
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
Current behavior:
Assume not checkpointing
cp_startCheckpoint creates the file in metadata
cp_needsCheckpoint will now set isCheckpointing to true
cp_commitCheckpoint will now think there is a checkpoint, and try to
commit it. This will fail on ext4 and it will return false, leading to
bad things.
cp_startCheckpoint is called when staging an apex module for update.
After this point, several things could go wrong:
If a keystore key is deleted, it calls cp_needsCheckpoint to see if the
delete should be deferred until cp_commitCheckpoint. The delete will now
be deferred, meaning that this key will never be deleted, using up the
key sots in trustzone
If a trim is scheduled through idle maintenance, this also calls
cp_needsCheckpoint, so the trims will not occur.
If either of these happens before a system crash, the device will not
recover since the system calls commitCheckpoint which will now crash.
When the system then goes on to reboot, the checkpoint will not be
triggered, since the commitCheckpoint call will have deleted the
checkpoint flag file before crashing.
Bug: 138952436
Test: vdc checkpoint startCheckpoint 5
vdc checkpoint needsCheckpoint
vdc checkpoint commitChanges
stop;start
commitChanges fails, then device loops
After applying this test, commitChanges succeeds and device does
not loop
Change-Id: I135099625f77344d1f8d2e8688735871c44ef2f5
If cp_commitCheckpoint is called twice at the same time, the second call
to setBowState will fail.
Add lock to remove possibility, and protect all uses of isCheckpointing
Bug: 138952436
Test: Boots after flashing in checkpoint mode
Change-Id: I131298adc506c3c176774d15e642b13d5f991087
When both ext4 user data checkpoints and metadata encryption are
enabled, we are creating two stacked dm devices. This had not been
properly thought through or debugged.
Test: Enable metadata encryption on taimen (add
keydirectory=/metadata/vold/metadata_encryption to flags for userdata in
fstab.hardware)
Unfortunately metadata is not wiped by fastboot -w, so it is
necessary to rm metadata/vold -rf whenever you wipe data.
fastboot flashall -w works
fastboot reboot -w works
A normal boot works
Disable checkpoint commits with
setprop persist.vold.dont_commit_checkpoint 1
vdc checkpoint startCheckpoint 10
adb reboot
wait for device to fully boot then
adb reboot
Wait for device to fully boot then
adb logcat -d | grep Checkpoint shows the rollback in the logs
This tests encryption on top of checkpoints with commit, encryption
without checkpoints, and rollback, which seems to be the key cases.
Bug: 135905679
Change-Id: I8365a40298b752af4bb10d00d9ff58ce04beab1f
Old approach (do not start class main) does not work because when
testings userdebug GSI on user system, adb does not start until the
framework starts.
Bug: 134126407
Test: Test passes with userdebug GSI on user Taimen
Merged-in: I20441964dbc7b6ad5b445fa17a1374c1282bbbd8
Change-Id: I20441964dbc7b6ad5b445fa17a1374c1282bbbd8
Bug: 131815738
Test: vdc checkpoint startCheckpoint 2 succeeds on blueline
It fails with a modified fstab with no checkpoint=fs flag
Change-Id: I6d55810a1f711a670f18fbd10d8779c15f4e3cba
Bug: 120095226
Test: Tested by forcing /data/system/last-fstrim last modified time back
2 years & manually trigger checkpoint using 'vdc checkpoint startCheckpoint 1'
Change-Id: I0cb8b6a85ae787e1ba2cdd7998a46942ca69760f
Merged-In: I0cb8b6a85ae787e1ba2cdd7998a46942ca69760f
Signed-off-by: Sandeep Patil <sspatil@google.com>
The expression "!fd" calls the implicit conversion to int, but comparing
the raw fd against 0 does not work, since open() and other POSIX calls
returning a file descriptor use -1 to signal an error.
Test: m vold
Change-Id: I0847c276f39cb9dd09c7ffb96951276113418fc8
This changes the property from microsecond to milliseconds, as we don't
need that sort of precision here. Also switches from using ulseep, which
has been removed from POSIX, to nanosleep.
Test: Builds, Boots, Times
Change-Id: Iefbaf8489ba05d8d688542fd7d4305efb980e701
Take action if we are running out of checkpoint space.
Configurable via ro.sys properties.
ro.sys.cp_usleeptime = Time to sleep between checks
ro.sys.cp_min_free_bytes = Min free space to act on
ro.sys.cp_commit_on_full = action to take. Either commits or reboots to
continue attempt without checkpoint, or retry
and eventually abort OTA
Test: Trigger a checkpoint and fill the disk.
Bug: 119769392
Change-Id: I977cc03b7aef9320d661c8a0d716f8a1ef0be347
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
This makes needCheckpoint return true when the device will or is using
checkpointing.
Test: vdc checkpoint startCheckpoint 1
reboot
vdc checkpoint needsCheckpoint
should return 1 before and after data mounts, and 0 once the
checkpoint has been committed
Change-Id: Ib57f4461d837f41a8110ed318168165a684d913a
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
This allows us to resume rolling back in the event of an unexpected
shutdown during the restore process. We save progress after we process
each log sector, and whenever restarting the current log sector would
result in invalid data.
Test: Run restore, interrupt it, and attempt to resume
Change-Id: I91cf0defb0d22fc5afdb9debc2963c956e9e171c
Restores the first n entries of a checkpoint. Allows automated testing
of interrupted restores.
Test: vdc checkpoint restoreCheckpoint [device] [n]
Change-Id: I47570e8eba0bc3c6549a04a33600df05d393990b
In preparation for restore code, we need to guarantee fsync happens.
Switch over to fd based operations to prepare for that.
Test: Successfully restores device over reboots
Change-Id: Ic9901779e8a4258bf8090d6a62fa9829e343fd39
I'm not convinced this explains the full regression, but it's a
worthwhile fix anyway.
Bug: 124774357
Test: Booted in checkpoint mode and non checkpoint mode
Change-Id: I6e0e1e59e27bd127feac218fff7d88bb3570b530
This marks the slot as successful within commitChanges, increasing the
available roll back window significantly.
Test: When taking an update on a checkpoint enabled device, it
marks the slot as successful just before committing the
checkpoint. Visible in logs as call to vdc commitChanges,
followed by "Marked slot as booted succesfully."
Bug: 123260515
Change-Id: If71fcde57b3bdee2cfaabb590f123a2d00da3228
VoldUtils already has a pre-parsed fstab. Use it instead.
Test: Checkpoint functions continue to work
Change-Id: I96cbab467a7b809c92c4f6cdf7a06abca8c5aa5e
Copy the existing mount options when remounting f2fs for checkpointing
mode.
Bug: 123376509
Test: Boot with checkpointing, and ensure entries match fstab
Change-Id: If022d9872a44657b550ab892259230805716dc77
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
We have a char buffer on the stack, which we then cast to a
struct, and then proceed to access elements in the struct.
This is not safe across all platforms, as some platforms
may require a certain alignment for members of the struct.
We fix this by assuring an appropriate alignment for our
char buffer.
We also use C++ casting, and rename our buffer to differenciate
it from the other 'buffer' variable in this function.
Test: TreeHugger
Change-Id: I8254cb6b8124e394bd805afd1ccca0faedb27ffa
We set a property when we commit a chackpoint to signal
to anyone who wants to do post commit cleanup.
Test: Boot to homescreen and check getprop for vold.checkpoint_committed
Bug: 111020314
Change-Id: Idf35e3abf9d24eb40c6926a30a8403064c05e10a
Only trys to commit if necessary, and reports errors
if commiting fails. RemoveFileIfExists returns true on
success.
Test: vdc checkpoint startCheckpoint, reboot, and then
vdc checkpoint commitChanges
Bug: 111020314
Change-Id: Ie1b3e49beb3ca04f2881fcc595882c607368b477
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
