The current Dev version of TarSum includes hashing of extended
file attributes and omits inclusion of modified time headers.
I refactored the logic around the version differences to make it
more clear that the difference between versions is in how tar
headers are selected and ordered.
TarSum Version 1 is now declared with the new Dev version continuing
to track it.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
This introduces Versions for TarSum checksums.
Fixes: https://github.com/docker/docker/issues/7526
It preserves current functionality and abstracts the interface for
future flexibility of hashing algorithms. As a POC, the VersionDev
Tarsum does not include the mtime in the checksum calculation, and would
solve https://github.com/docker/docker/issues/7387 though this is not a
settled Version is subject to change until a version number is assigned.
Signed-off-by: Vincent Batts <vbatts@redhat.com>
