Nicolas LacasseandgVisor bot c07dc2673f Implement hostinet.Stack methods that manipulate interfaces and addresses. ...

And enable all of the netlink tests that depend on this functionality.

Specifially, this CL implements hostinet.stack:
* .RemoveInterface()
* .AddInterfaceAddr()
* .RemoveInterfaceAddr()

Applications use netlink messages to call into these methods. For hostinet, we
use netlink messages to the host to implement these methods.

Note that the netlink messages are not simple passed from the application to
the host -- they are parsed first and only carefully crafted messages are sent
to the host.

This CL required a lot of refactoring to the existing netlink code in the
hostinet package, as well as a bunch of new functionality. All of that code has
been collected in hostinet/netlink.go

I also changed how we handle CAP_NET_ADMIN and CAP_NET_RAW in tests, since we
must drop those capabilities inside the sandbox if we don't have them on the
host. The new solution is cleaner and does not rely on google-specific env
variables.

PiperOrigin-RevId: 522685544

2023-04-07 14:33:21 -07:00

..

BUILD

Implement hostinet.Stack methods that manipulate interfaces and addresses.

2023-04-07 14:33:21 -07:00

protocol.go

Implement hostinet.Stack methods that manipulate interfaces and addresses.

2023-04-07 14:33:21 -07:00