join: use getline() instead of fgetln()

This replaces fgetln() with getline(). The main reason for this is
portability, making things easier for people who want to compile these
tools on non-FreeBSD systems.

I appreciate that's probably not the top concern for FreeBSD base tools,
but fgetln() is impossible to port to most platforms, as concurrent
access is essentially impossible to implement fully correct without the
line buffer on the FILE struct. Other than this, many generic FreeBSD
tools compile fairly cleanly on Linux with a few small changes.

Most uses of fgetln() pre-date getline() support (added in 2009 with
69099ba2ec8b), and there's been some previous patches (ee3ca711a898
8c98e6b1a7f3 1a2a4fc8ce1b) for other tools.

Obtained from: https://github.com/dcantrell/bsdutils and
https://github.com/chimera-linux/chimerautils
Signed-off-by: Martin Tournoij <martin@arp242.net>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/893

join(1): Fix ordering in case of missing fields

The comparison function had the ordering reversed causing join(1) to
miss some matching lines.

PR: 232405
Submitted by: Martijn van Duren <martijn@openbsd.org>
MFC after: 1 week

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line .c pattern

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

Mark usage function as __dead2 in programs where it does not return

In most cases, usage does not return, so mark them as __dead2. For the
cases where they do return, they have not been marked __dead2.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/735

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.

join(1): Fix field ordering for -v output

Per POSIX, join(1) (in modes other than -o) is a concatenation of selected
character fields. The joined field is first, followed by fields in the
order they occurred in the input files.

Our join(1) utility previously handled this correctly for lines with a match
in the other file. But it failed to order output fields correctly for
unmatched lines, printed in -a and -v modes.

A simple test case is:

$ touch a
$ echo "2 1" > b
$ join -v2 -2 2 a b
1 2

PR: 217711
Reported by: alt.j2-4o4s2yon at yopmail.com
Sponsored by: Dell EMC Isilon

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

Cast *tabchar, a wchar_t, to a wint_t as it is the type the %lc printf
format string expects. This is only an issue on ARM EABI where wint_t is
different to wchar_t.

Add missing static keywords to join(1)

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

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.

Backout recent -j changes, the flags is deprecated.

Requested by: tjr

Add -j flag to usage() and the man page synopsis.

Inspired by: DragonFlyBSD

Add support for multibyte characters.

ANSIify function definitions.
Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by: md5

Consistently use FBSDID

Easy warns fixes; sort out some types and me them a bit more consistent;
fix initialisers.

Remove <ctype.h> - not needed

Allow space between -a and its argument. Honour locale collating order
by using strcoll() instead of strcmp().

PR: 36270
Reviewed by: mike

Support -o 0 in join(1) as per SUS.

PR: 36072
Submitted by: Tim J. Robbins <tim@robbins.dropbear.id.au>
Reviewed by: mike

remove __P

$Id$ -> $FreeBSD$

Clean up some ambiguous nested if/elses.

Require all compatability options to begin with '-'.

PR: 4145

Cosmetic in usage string.

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Merge from Lite2 (note: needs checking by somebody who understands join)

Import some parts of CSRG 4.4BSD-Lite2 usr.bin sources to fix tree build.

Fix a genuine off-by-one error that caused join to dump core when
trying to use field numbers tha weren't present in the input data.

Don't access stuff we have realloc()'ed using the old pointer.

This is a sample of a new class of malloc usage errors that the
Junk option to phkmalloc will expose.

Found by: phkmalloc.

Remove trailing whitespace.

BSD 4.4 Lite Usr.bin Sources