sbin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

Revert 335888 ("Ensure va_list is declared by including stdarg.h.")

The issue was caused by header pollution brought by GCC 8.1.

We now have to remove include-fixed headers in the GCC installation
directory.

Sponsored by: DARPA, AFRL
Pointed out by: jhb

o Ensure va_list is declared by including stdarg.h.
o Also move printf.h to go after it since it does require declaration
of va_list.

This fixes build with latest RISC-V GNU Toolchain with GCC 8.1

Sponsored by: DARPA, AFRL

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.

Ensure that pjdlog functions don't modify errno.

MFC after: 3 days

- Add support for AF_INET6 sockets for %S format character.
- Use inet_ntop(3) instead of reimplementing it.
- Use %hhu for unsigned char instead of casting it to unsigned int and
using %u.

MFC after: 1 week

Unbreak the build.

MFC after: 2 weeks

- Turn on printf extentions.
- Load support for %T for pritning time.
- Add support for %N for printing number in human readable form.
- Add support for %S for printing sockaddr structure (currently only AF_INET
family is supported, as this is all we need in HAST).
- Disable gcc compile-time format checking as this will no longer work.

MFC after: 2 weeks

Provides three states for pjdlog_initialized, so we can also tell that
this is fist initialization ever.

MFC after: 2 weeks

Rename pjdlog_verify() to pjdlog_abort() as it better describes what the
the function does and mark it with __dead2.

MFC after: 1 week

Initialize all global variables on pjdlog_init().

MFC after: 1 week

Extend pjdlog_verify() to support the following additional macros:
PJDLOG_RVERIFY() - always check expression and on false log the given message
and exit.
PJDLOG_RASSERT() - check expression when NDEBUG is not defined and on false log
given message and exit.
PJDLOG_ABORT() - log the given message and exit.

MFC after: 1 week

Add functions to initialize/finalize pjdlog. This allows to open/close log
file at will.

MFC after: 1 week

Use my copyright for 2011 work.

MFC after: 1 week

Add LOG_NDELAY flag to openlog(3) - we want descriptor to be immediately open
so there are no surprises once we start chrooting or using capsicum.

MFC after: 1 week

- Remove obvious NOTREACHED comment after abort() call.
- Remove redundant newline at the end of the file.

MFC after: 1 week

Use more consistent function name with the others (pjdlogv_prefix_set()
instead of pjdlog_prefix_setv()).

MFC after: 1 week

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

Use one fprintf() instead of two.

MFC after: 3 days

Include process PID in log messages.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>
MFC after: 2 weeks

When logging to stdout/stderr, flush after each log.

MFC after: 2 weeks
Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com

Problem with assertion is that it logs on stderr. Add two macros:
PJDLOG_ASSERT() and PJDLOG_VERIFY() that will check the given condition
and log the problem where appropriate. The difference between those
two is that PJDLOG_VERIFY() always work and PJDLOG_ASSERT() can be
turned off by defining NDEBUG.

MFC after: 1 month

Keep $FreeBSD$ in __FBSDID() only for C files.

MFC after: 1 month

Mark two more places that we won't reach.

MFC after: 1 month

MFC r204177,r205738,r206669,r206696,r206697:

r204177:

Changing proto_socketpair.c compilation and linking order revealed
a problem - we should simply ignore proto_server() if address
doesn't start with socketpair://, and not abort.

r205738:

Don't hold connection lock when doing reconnects as it makes I/Os wait for
connection timeouts.

Reported by: Kevin Day <toasty@dragondata.com>

r206669:

Increase ggate queue size to maximum value.
HAST was not able to stand heavy random load.

Reported by: Hiroyuki Yamagami

r206696:

Fix control socket leak when worker process exits.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>

r206697:

Fix log size calculation which caused message truncation.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>

MFC r204076,r204077,r204083,r205279:

r204076:

Please welcome HAST - Highly Avalable Storage.

HAST allows to transparently store data on two physically separated machines
connected over the TCP/IP network. HAST works in Primary-Secondary
(Master-Backup, Master-Slave) configuration, which means that only one of the
cluster nodes can be active at any given time. Only Primary node is able to
handle I/O requests to HAST-managed devices. Currently HAST is limited to two
cluster nodes in total.

HAST operates on block level - it provides disk-like devices in /dev/hast/
directory for use by file systems and/or applications. Working on block level
makes it transparent for file systems and applications. There in no difference
between using HAST-provided device and raw disk, partition, etc. All of them
are just regular GEOM providers in FreeBSD.

For more information please consult hastd(8), hastctl(8) and hast.conf(5)
manual pages, as well as http://wiki.FreeBSD.org/HAST.

Sponsored by: FreeBSD Foundation
Sponsored by: OMCnet Internet Service GmbH
Sponsored by: TransIP BV

r204077:

Remove some lines left over by accident.

r204083:

Add missing KEYWORD line.

Pointed out by: dougb

r205279 sys:

Simplify loops.

Fix log size calculation which caused message truncation.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>
MFC after: 3 days

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.

Please welcome HAST - Highly Avalable Storage.

HAST allows to transparently store data on two physically separated machines
connected over the TCP/IP network. HAST works in Primary-Secondary
(Master-Backup, Master-Slave) configuration, which means that only one of the
cluster nodes can be active at any given time. Only Primary node is able to
handle I/O requests to HAST-managed devices. Currently HAST is limited to two
cluster nodes in total.

HAST operates on block level - it provides disk-like devices in /dev/hast/
directory for use by file systems and/or applications. Working on block level
makes it transparent for file systems and applications. There in no difference
between using HAST-provided device and raw disk, partition, etc. All of them
are just regular GEOM providers in FreeBSD.

For more information please consult hastd(8), hastctl(8) and hast.conf(5)
manual pages, as well as http://wiki.FreeBSD.org/HAST.

Sponsored by: FreeBSD Foundation
Sponsored by: OMCnet Internet Service GmbH
Sponsored by: TransIP BV