Ian Johnson a2169a490b interfaces/cups: add cups-socket-directory attr, use to specify mount rules in backend (#10427) ...

interfaces/cups: add cups-socket-directory attr, use to specify mount rules in backend

Make the cups interface slot have an optional attribute, cups-socket-directory, which
is used to specify the directory where the cups socket that the slotting snap
is going to share with client snaps.

This directory then is mounted into client snap's mount namespaces via the
mount backend at /var/cups/, such that client applications wishing to
print need to adjust the location of where they expect the cups socket to
be at all, but then will always end up sending print requests to the cups snap,
which will mediate requests to print based on whether or not the client snap
has a connected cups plug or not.

The primary advantage of this is that it means we don't need to make the cups
interface implictly slotted by the system snap, and it can always be provided
by the cups snap, and we can then make any snap with a cups interface plug
auto-connect to the slot from the cups snap unambiguously, providing all snap
clients the ability to print without any extra connections necessary,
regardless of their distro or what the client snap is.

2022-02-07 09:12:58 -06:00

..

export_test.go

cmd/snap-exec: tweak how completion helper is looked up

2019-06-18 12:22:43 +02:00

main_test.go

interfaces/cups: add cups-socket-directory attr, use to specify mount rules in backend (#10427)

2022-02-07 09:12:58 -06:00

main.go

interfaces/cups: add cups-socket-directory attr, use to specify mount rules in backend (#10427)

2022-02-07 09:12:58 -06:00