tree 8023e1063dc310b8a5fd4919a04aaa0c48614f5c
parent 1c35526d50bf3caa5ad87e703ba4eaa34b2266cc
author Cody Schuffelen <schuffelen@google.com> 1544061096 -0800
committer Cody Schuffelen <schuffelen@google.com> 1544232565 -0800

Add a launcher -data_policy=resize_up_to mode.

This allows increasing the size of userdata.img from the launcher
without data loss. The implementation delegates to /sbin/e2fsck
and /sbin/resize2fs.

The blank_data_image_mb flag is reused to describe the desired size,
though the name doesn't fit perfectly. If the target size is smaller
than the current size, the resize will cause the launcher to fail. If
the target size is equal to the current size, the resize will not run.

Bug: 120573603
Test: Ran with -data_policy=resize_up_to with incrementally larger sizes
Change-Id: I432b4687215ec27806f985889f48beb78f9c5612