ioctls such as SIOCGIFADDR deal with AF_INET sockaddr addresses, but none of
the fields aside from the embedded IPv4 address are used. To keep the interface
more simple, we directly expose Inet4Addr get and set methods which enable use
of these ioctls with the Ifreq wrapper.
Change-Id: Ia8b6ab9730f852cb99f4152e334a59d395476d2f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/343250
Trust: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
This CL expands upon CL 340369 by exporting the Ifreq type along with methods
for setting and getting data to/from the ifreq union in a type-safe way.
ifreqData remains unexported as we can keep adding helpers similar to the
IoctlGetEthtoolDrvinfo to expose those operations in a less error-prone way.
A test is also added to verify interface index data using IoctlIfreq against
the modern rtnetlink API used by the standard library.
Change-Id: Ic6980cbcd3792cc341cd614061cce32fa1f851e7
Reviewed-on: https://go-review.googlesource.com/c/sys/+/340370
Trust: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
