tree 8238be41291426a03e72c79849ad97c75ba9d2cc
parent 9e7dc7f96efd1ff30b50601745b415756d0cfcfc
author Simon Shields <simon@lineageos.org> 1569939705 +1000
committer Tim Zimmermann <tim@linux4.de> 1709615379 +0100
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recovery_utils: add support for unmounting entire volumes

When wiping /system, the partition isn't actually mounted at /system
or / - it's mounted at /mnt/system. This breaks 'format system' from
recovery if the partition has been mounted.

This patch adds an ensure_volume_unmounted function that finds all
mounts of a given device and unmounts them, meaning the device
can be safely formatted.

Change-Id: Id4f727f845308a89e865f1ba60dc284f5ebc66e1