OverlayFsUtils

public class OverlayFsUtils
extends TestWatcher

java.lang.Object
↳	org.junit.rules.TestWatcher
	↳	com.android.sts.common.OverlayFsUtils

TestWatcher that enables writing to read-only partitions and reboots device when done.

Summary

Fields
`static final Pattern`	`PERM_PATTERN`

Public constructors
`OverlayFsUtils(BaseHostJUnit4Test test)`

Public methods
`boolean`	`anyOverlayFsMounted()`
`void`	`finished(Description d)`
`void`	`makeWritable(String dir, int megabytes)` Mounts an OverlayFS dir over the top most common dir in the list.

static final Pattern PERM_PATTERN

public OverlayFsUtils (BaseHostJUnit4Test test)

Parameters
`test`	`BaseHostJUnit4Test`

public boolean anyOverlayFsMounted ()

Returns
`boolean`

Throws
`DeviceNotAvailableException`

public void finished (Description d)

Parameters
`d`	`Description`

public void makeWritable (String dir, 
                int megabytes)

Mounts an OverlayFS dir over the top most common dir in the list.

The directory should be writable after this returns successfully. To cleanup, reboot the device as unfortunately unmounting overlayfs is complicated.

Parameters
`dir`	`String`: The directory to make writable. Directories with single quotes are not supported.
`megabytes`	`int`

Throws
`DeviceNotAvailableException`
`IOException`
`IllegalStateException`