tree 4a4f1fb44c182853e8e64ffd2797ece0578af0fa
parent 689e9b9cbdac1b5732124e5b2101167548b21be0
author Simon Shields <simon@lineageos.org> 1569939705 +1000
committer Michael Bestas <mkbestas@lineageos.org> 1647113360 +0200
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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