Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

inetd: track all child pids, regardless of maxchild spec

Currently, child pids are only tracked if maxchildren is specified. As a
consequence, without a maxchild limit we do not get a notice in syslog on
children aborting abnormally. This turns out to be a great debugging aide at
times.

Children are now tracked in a LIST; the management interface is decidedly
less painful when there's no upper bound on the number of entries we may
have at the cost of one small allocation per connection.

PR: 70335

inetd: add some macros for checking child limits, NFC

The main point here is capturing the maxchild > 0 check. A future change to
inetd will start tracking all of the child pids so that it can give proper
and consistent notification of process exit/signalling.

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

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.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

- Add static for symbols which need not to be exported.
- Clean up warnings to the WARNS=6 level.

Replace the use of wall clock time with monotonically increasing
clock. In general, gettimeofday() is not appropriate interface
when accounting for elasped time because it can go backward, in
which case the policy code could errornously consider the limit
as exceeded.

MFC after: 1 week
Reported by: Mahesh Arumugam
Submitted by: Dorr H. Clark via gnn
Sponsored by: Citrix / NetScaler

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.

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

Removed T/TCP bits.

Revert previous commit for now, which seems to have (re)introduced some
old bugs, as well as some unwanted side effects. I will do more
investigation and fix these issues first.

Pointed out by: dwmalone

Improves and cleanups over inetd(8):

- Teach inetd(8) about kqueue, originally implemented by jmg@[1].
- Use new C99 style function prototypes instead of K&Rs.
- Raise WARNS from 2 to 6

Glanced at by: ru
MFC After: 2 weeks

[1] http://people.freebsd.org/~jmg/inetd.kq.patch,
http://people.freebsd.org/~jmg/inetd.kq.html

Per letter dated July 22, 1999 remove 3rd clause of Berkeley derived software
(with permission of addtional copyright holders where appropriate)

Add capability for limiting the maximum number of simultaneous
invocations of each service from a single IP address.

Requested by: matusita
Reviewed by: dwmalone
Tested by: matusita on snapshots.jp.FreeBSD.org
MFC after: 2 weeks

Kill __P, yuck.

Fix most of the warnings given by WARNS=2.

Give inetd the ability to manage unix domain sockets. Details of
how to use this feature are in the man page. This is based on work
by Lyndon Nerenberg.

(The only difficult part about this patch is the fact that you
can't fchown a unix domain socket, which means the sockets must be
put in a secure directory).

Reviewed by: dillon

Get rid of se_ctladdrinitok, which doesn't do anything and seemes
to have been accidently imported when ipv6 support was added to
inetd.

Approved by: ume

This patch cleans up the ident stuff in inetd. The code which has
been patched so many times it was a bit of a mess. There are style,
code and man page cleanups. The following are the functional changes:

The RFC only permits the returning of 4 possible error
codes, make sure we only return these (PR 27636).

Use MAXLOGNAME to determine the longest usernames.

Add a -i flag, which returns the uid instead of the username
(this is from a PR 25787, which also contained alot of the
cleanups in this patch).

PR: 25787, 27636
Partially Submitted by: Arne.Dag.Fidjestol@idi.ntnu.no
Reviewed by: Arne.Dag.Fidjestol@idi.ntnu.no, green
MFC after: 3 weeks

Various cleanups of inetd: Avoid shadowing variables, use socklen_t
instead of ints, don't cast to char *, clear up some remote name
handling code which had become a little odd.

Should result in no functional changes.

Tidy up some prototypes:
make sure there is exactly one prototype for each function,
use K&R style definitions everywhere to match dominant style,
make flag_signal take an int to avoid problems if we have
ANSI prototypes and K&R definitions.

Fix two typos in comments.

PR: 22268
Submitted by: Daniel S. Lewart <d-lewart@uiuc.edu>

several tcp apps IPv6 update
-inetd
-rshd
-rlogind
-telnetd
-rsh
-rlogin

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project

$Id$ -> $FreeBSD$

This commit encompasses the following changes to inetd:
1. Cleanups of ident_stream. "Evil" stdio is less used.
2. The BSD Copyright was added to the top of builtins.c.
3. As suggested, a timeout is now implemented in the ident
service. It defaults to 10 seconds. If enough people want
it, I'll make it configurable.

Suggested by: msmith

Move code for all builtin services from inetd.c to builtins.c, including
the Green Piece. :-)

In future, new builtin services are less likely to need to touch the
already tangled inetd.c .