Add an lpunpack tool for extracting partitions from super.img.
This tool performs the inverse of lpmake. It can extract partition
images out of a prebuilt super.img. There are a few caveats:
- lpunpack does not support retrofit/split images.
- lpunpack does not support sparse super images. They must be unsparsed
before using with lpunpack.
- Partition names will be suffixed on A/B devices, meaning,
vendor_a.img will contain vendor.img and vendor_b.img will be
0-length.
Note that lpunpack will store output files with holes for zero blocks,
as a space-saving measure.
Usage: lpunpack [options] SUPER_IMAGE [OUTPUT_DIR]
Bug: 131173010
Test: m superimage
mm lpunpack
lpunpack super.img
lpunpack super.img out/
lpunpack -p vendor_a super.img
lpunpack -p unknown super.img
sha1sum image with precursor image
Change-Id: Iad3f7362ae6ce767ddc7de2e8cfa7e4a47190e99
2 files changed