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Refactor fstrim code to be encapsulated in unique task object, and
give it option of benchmarking when finished.  Trimming now includes
both storage from fstab and adopted private volumes.  Cleaner timing
stats are logged for each unique volume.

Add wakelock during ongoing async move tasks.  Push disk sysfs path
to framework so it can parse any SD card registers as desired.

Bug: 21831325
Change-Id: I76577685f5cae4929c251ad314ffdaeb5eb1c8bf

Now that we're offering to store private app data on adopted storage
devices, the performance of those devices is much more important to
overall user experience.

To help set user expectations, this change offers to execute a
real-world benchmark on a storage device, returning a metric that can
be used to compare internal and external storage.  The benchmark is
generated from the strace-instrumented storage access patterns of
typical apps.

A typical device completes the benchmark in under two seconds on
internal storage, a UHS-3 SD card is even faster (!), but a very slow
Class 4 SD card takes about 30 seconds to complete, giving us a clear
signal.

The measured benchmark numbers are logged along with information
about the storage device, such as manufacturer, model, etc.  Card
serial numbers are scrubbed from output.

Bug: 21172095
Change-Id: I9b2713dafdfdfcf5d97bf1bc21841f39409a7e54

ioctl(BLKGETSIZE) expects unsigned long
(8 bytes on 64 bit environment).

This is fixing fails in android.os.storage.StorageManagerIntegrationTest
(in FrameworkCoreTests).

To verify, install FrameworksCoreTests.apk and do:

adb shell am instrument -r -w -e class android.os.storage.\
StorageManagerIntegrationTest#testMountSingleEncryptedObb \
com.android.frameworks.coretests/android.test.InstrumentationTestRunner

Change-Id: Ib6d5c7490c02521c93f107c35ad0aac49f6a3f1a

The new wipe option to the vold format command will invoke BLKDISCARD
on the partition before invoking newfs_msdos.  This will be used whenever
a full wipe of the device is wanted, as this is more secure than just
doing newfs_msdos.

Bug: 9392982
Change-Id: Ie106f1b9cc70abc61206006d1821641c27c7ccae

Make sure all the calls to logwrap are consistent with the function's
semantics.

Change-Id: Ib0e2ad5c283cc4bb06c0ef5d6a9a52a5840b3dd2

  Let there be light.
Signed-off-by: San Mehat <san@android.com>