Due to FreeBSD compatibility, we have so far been forced into some
unfortunate behaviour with regards to which comparison errors we
actually return an error code for. FreeBSD generally does not return
errors if a file or keyword only exists in one of the manifests being
compared.
Some users do not care about FreeBSD compatibility and just want to get
errors if there is any difference between a manifest and directory tree.
Commit 9cdd9152b3 ("cmd: gomtree: re-enable errors when there is a
Modified entry") added a TODO to implement this, but I've only just got
around to implementing it.
This patch adds a new --strict flag to "gomtree validate", which causes
it to error out if any changes were detected and also disables the
FreeBSD compatibility keyword delta filters. This is more akin to what
modern users would expect from a manifest validation tool.
Fixes: 21723a3974 ("*: fix comparison of missing keywords")
Fixes: 9cdd9152b3 ("cmd: gomtree: re-enable errors when there is a Modified entry")
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
