Purge more stray embedded $FreeBSD$ strings

These do not use __FBSDID but instead use bare char arrays.

Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D41957

ifconfig: remove global 'name' variable.

Consistenly use newly-added 'ctx->ifname' as the name of the current
target interface.

Reviewed By: kp
Differential Revision: https://reviews.freebsd.org/D40438
MFC after: 2 weeks

ifconfig: introduce `ifconfig_context` to store current global state.

The structure consists of all current context - arguments,
open sockets, current family and so on.

Pass this structure as a first argument to most of the af_ menthods.
This allows to propagate and update shared data without using
global variables.

The diff is pretty large, but de-facto mechanical. All changes
except the structure setup in ifconfig[_netlink].c are one-line
mechanical changes.

Reviewed by: kp
Differential Revision: https://reviews.freebsd.org/D40239
MFC after: 2 weeks

ifconfig: cleanup warnings #1

Cleanup compiler warnings in preparation to set Wextra and remove WARNS?=2

Differential Revision: https://reviews.freebsd.org/D40238
MFC after: 2 weeks

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

ifconfig: remove unused variable

In printgroup() 'cnt' is set, but never read. Remove it.

Sponsored by: Rubicon Communications, LLC ("Netgate")

sbin/ifconfig: Use a global libifconfig handle

This should eventually replace the socket passed to the various
handlers. In the meantime, making it global avoids repeatedly opening
and closing handles.

Reported by: kp
Reviewed by: kp (earlier version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D28990

sbin/ifconfig: Get groups with libifconfig

Reviewed by: kp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D28965

ifconfig: eliminate trailing whitespace

Eliminate trailing whitespace on inet, inet6, and groups lines. I think the
"list txpower" command will still show some, but I'm not able to test that.

PR: 153731
Reported-by: Nikolay Denev <ndenev@gmail.com>
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19004

Create a project branch for fuse(4) work.

The branch will be used for a new test suite, bug fixes, and various other
enhancements to fuse.

Sponsored by: The FreeBSD Foundation

Make lagg creation more fault tolerant

- Warn, don't exit, when SIOCSLAGGPORT returns an error.

When we exit with an error during lagg creation, a single
failed NIC (which no longer attaches) can prevent lagg
creation and other configuration, such as adding an IPv4
address, and thus leave a machine unreachable.

- Preserve non-EEXISTS errors for exit status from SIOCSLAGGPORT,
in case scripts are looking for it. Hopefully this can be
extended if other parts of ifconfig can allow a "soft" failure.

- Improve the warning message to mention what lagg and what
member are problematic.

Reviewed by: jtl, glebius
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D15046

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

Replace N #defines with nitems to simplify ifconfig code slightly

MFC after: 1 week

Expose groups by default in ifconfig output. This was never hidden by
OpenBSD; unsure why we chose to do so. As groups are a requirement for
pf, exposing them by default will make our pf implementation less
confusing.

While here add a missing free() that OpenBSD fixed 7 years ago.

PR: 194925
Differential Revision: https://reviews.freebsd.org/D1185
Approved by: des
Obtained from: OpenBSD

Do not error out when adding an interface to a group to which it
already belongs or removing it from a group to which it does not
belong. This makes it possible to include group memberships in
ifconfig_foo0 in rc.conf without fear of breaking "service netif
restart foo0".

MFC after: 3 days

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Default to AF_LOCAL instead of AF_INET sockets for non-family-specific
operations. This allows the query operations to work in non-IPv4 jails,
and will be necessary in a future of possible non-INET networking.

Approved by: bz (mentor)

- Import the HEAD csup code which is the basis for the cvsmode work.

correct type definition of option routine callback

Import interface groups from OpenBSD. This allows to group interfaces in
order to - for example - apply firewall rules to a whole group of
interfaces. This is required for importing pf from OpenBSD 3.9

Obtained from: OpenBSD (with changes)
Discussed on: -net (back in April)