This commit fix a possible integer overflow during U/GID map parsing.
Casting a 32bit unsigned integer to the resulting IDMap will now be
guarded by a simple overflow check. This check does apply only to 32bit
target architectures.
Signed-off-by: Sascha Grunert <sgrunert@suse.com>
I found that other projects, tend to parse multiple maps at once. So, we may
want to allow the base library to do so in order to decrease complexity in the
upper layers.
This is follow-up on previous refactoring in 7b209d36fd, I didn't got
it right on first try, sry.
Signed-off-by: Šimon Lukašík <isimluk@fedoraproject.org>
where it belongs.
I have noticed that this parsing gets spread across projects. Basically, the
very same method is present in libpod, buildah, and cri-o projects. We better
start re-using this code from single place or soon everyone has its own version.
Signed-off-by: Šimon Lukašík <slukasik@redhat.com>
Daniel J Walsh