ssp: appease -Wgnu-statement-expression-from-macro-expansion

It's a stupid warning, but some ports enable it by default and were
already defining _FORTIFY_SOURCE, thus exposing the new macros
immediately. This at least fixes the libfido2 build, perhaps others as
well.

While we're here, fix a fresh build of stand w/ FORTIFY_SOURCE enabled
by not pulling in the ssp headers if _STANDALONE is defined. We do not
have runtime support in libsa as of the time of writing.

Reported by: netchild
Sponsored by: Stormshield
Sponsored by: Klara, Inc.

Add a build knob for _FORTIFY_SOURCE

In the future, we will Default to _FORTIFY_SOURCE=2 if SSP is enabled,
otherwise default to _FORTIFY_SOURCE=0. For now we default it to 0
unconditionally to ease bisect across older versions without the new
symbols, and we'll put out a call for testing.

include/*.h include their ssp/*.h equivalents as needed based on the
knob. Programs and users are allowed to override FORTIFY_SOURCE in their
Makefiles or src.conf/make.conf to force it off.

Reviewed by: des, markj
Relnotes: yes
Sponsored by: Stormshield
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D32308

Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

Prepare SPL repo to merge with ZFS repo

This commit removes everything from the repository except the core
SPL implementation for Linux. Those files which remain have been
moved to non-conflicting locations to facilitate the merge.
The README.md and associated files have been updated accordingly.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

Fix cstyle warnings

This patch contains no functional changes. It is solely intended
to resolve cstyle warnings in order to facilitate moving the spl
source code in to the zfs repository.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #681

include: General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified 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.

Make file headers conform to ZFS style standard

No semantic changes.

Change
/************\
and
\************/

to

/*
and
*/

Signed-off-by: Olaf Faaland <faaland1@llnl.gov>

Add explicit_bzero(3) and its kernel counterpart.

Obtained from: OpenBSD
MFC after: 2 weeks

Fix strcasecmp_l() and strncasecmp_l() POSIX 2008 compliance.

POSIX.1-2008 specifies that those two functions should be declared by
including <strings.h>, not <string.h> (the latter only has strcoll_l()
and strxfrm_l()):

http://pubs.opengroup.org/onlinepubs/9699919799/functions/strcasecmp.html

Obtained from: DragonFlyBSD
Reviewed by: theraven
MFC after: 2 weeks

Refresh links to web site

Update links to refer to the official ZFS on Linux website instead of
@behlendorf's personal fork on github.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

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

Public Release Prep

Updated AUTHORS, COPYING, DISCLAIMER, and INSTALL files. Added
standardized headers to all source file to clearly indicate the
copyright, license, and to give credit where credit is due.

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.

This should read #if __BSD_VISIBLE instead of #ifdef __BSD_VISIBLE.

- Remove bcmp, bcopy, bzero, index, and rindex from the POSIX.1-2008
namespace.
- Add ffs to the XSI namespace.

Add the ffsll and flsll functions. These are ffs and fls operating
on long long arguments.

Reviewed by: bde (previous version, that included asm implementation
for all ffs and fls functions on i386 and amd64)
MFC after: 2 weeks

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

More stub headers,
moved generic to sysmacros,
added some more macros for kernel compatibility


git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@22 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

Add __pure and __pure2 where appropriate.

Reduce namespace pollution.

Add and document ffsl(), fls() and flsl().

o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
macros, which are only MD because of gratuitous differences between
architectures.
o Change all headers to make use of this. This mainly involves
changing:
#ifdef _BSD_FOO_T_
typedef _BSD_FOO_T_ foo_t;
#undef _BSD_FOO_T_
#endif
to:
#ifndef _FOO_T_DECLARED
typedef __foo_t foo_t;
#define _FOO_T_DECLARED
#endif

Concept by: bde
Reviewed by: jake, obrien

o Move some function prototypes from <string.h> to the newly rewritten
<strings.h>, based on POSIX.1-2001's requirements.
o Add 'restrict' qualifier (spelled '__restrict') to functions in
<string.h>, as per C99 and POSIX.1-2001.
o Properly expose new POSIX.1-2001 functions in <string.h>.

BSD 4.4 Lite Include Sources