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/

last(1): Remove double words in source code comments

- s/on on/on/
- s/we we/we/

MFC after: 5 days

last: improve non-UTF8 locale output after libxo support was added

Some strftime(3) conversion specifications will generate strings encoded
with the current locale, not necessarily UTF8. As per xo_format.5, use
the h string modifier so that libxo interprets it appropriately.

Reviewed by: eugen, philip
Differential Revision: https://reviews.freebsd.org/D32437

Revert "last(1): unbreak for 8-bit locales"

This reverts commits 8e67c427b5 (unbreak for 8-bit locales), 0ca58ca151
(correction after r351413), and f424ec1b80 (fix style after r351459).

A simpler fix can be done by using the h modifier for strings that are
encoded with the current locale.

Reviewed by: eugen, philip
Differential Revision: https://reviews.freebsd.org/D32437

last(1): fix style after r351459

Reported by: cem
MFC after: 2 weeks
X-MFC-With: 351459

last(1): correction after r351413

Make that change no-op for C/POSIX locale just like for UTF-8
that it superset of US-ASCII.

MFC after: 2 weeks
X-MFC-With: r351413

last(1): unbreak for 8-bit locales

Ouput format of last(1) is broken for non UTF-8 locales
since it got libxo(3) support. It uses strftime(3) that produces
non UTF-8 strings passed to xo_emit(3) with wrong %s format -
it should be %hs in this case, so xo_emit(3) produces empty output.

This change is basically no-op when locale is of UTF-8 type,
f.e. en_GB.UTF-8 or ru_RU.UTF-8 or sr_RS.UTF-8@latin.
It fixes output for other locales.

MFC after: 2 weeks

Add libxo(3) support to last(1).

Reviewed by: kp
Approved by: re (gjb)
MFC after: 1 week
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D16922

Convert `cap_enter() < 0 && errno != ENOSYS` to `caph_enter() < 0`.

No functional change intended.

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.

Fix a memory leak with last
free memory allocated to 'buf'

Submitted by: Thomas Rix <trix@juniper.net>
Reviewed by: ed
Approved by: sjg (mentor)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D9850

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

Capsicumify last(1)

Reviewed by: ed (earlier version), emaste (earlier version)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8001

Unbreak "last reboot".

According to the last(1) man page, the "reboot" pseudo-user should print
all system reboot entries. This got broken by the utmpx import, as
records are typed.

Re-add support for "last reboot" by specifically matching against
SHUTDOWN_TIME and BOOT_TIME records.

PR: 168844
Submitted by: matthew@
MFC after: 1 month

Switch batch to an SLIST.

This code requires none of the features of LIST.

- Replace "wtmp" with "utx.log" because last(1) no longer reads wtmp.
- A real filename is now shown in an output report when "-f file" is specified.
- Add Xr lastlogin into last(1) manual page.

Reviewed by: ed
MFC after: 1 week

Add missing static keywords to last(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.

Make last(1) display the full log file.

I must have misread when I ported the original last(1) source code.
Instead of only processing the last 1024 entries, it reads them in in
chucks of 1024 entries at a time.

Unfortunately we cannot walk through the log file in reverse order,
which means we have to allocate a piece of memory to hold all the
entries. Call realloc() for each 128 entries we read.

Reported by: Andrzej Tobola <ato iem pw edu pl>

Port last(1) to use utmpx.

Basically there are three major things I changed about last(1):

- It should use ut_type instead of determining by hand what type of
record was given.
- It should now keep track of ut_id's instead of TTYs. This means the
ttylist has been renamed to the idlist, storing all the ut_id's it has
processed until the next reboot.
- I've removed the signal handler. Because our wtmp is rotated so often,
it makes little sense. Even on a simple piece of hardware it should be
capable of grinding through megabytes of logs in a second.

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

s/FALLTHOUGH/FALLTHROUGH/

Submitted by: Xin LI <delphij@frontfree.net>

Include timeconv.h for _int_to_time and _time_to_int.

Tidy up usage message.

Add the -n maxrec option as an alias for -maxrec for compatibility with
System V and consistency with other utilities. Document the new form
instead of the old form in the manual page.

PR: 54661

Fix core dumps when invoking with something like ``last -w1''.

PR: bin/44583
Reported by: Amit Chakradeo <sdbug@spam.chakradeo.net>
MFC after: 3 days

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

Clean up malloc(3)'s argument. Remove casts which do nothing when we're
using sizeof() anyway. Use slightly more consistent (per-file) error
reporting for malloc(3) returning NULL. If "malloc failed" was being printed,
don't use err(3). If a NULL format is being used, use err(3). In one case
errx(3) was being used with strerror(3), so just use err(3).

remove __P

Add a new "-y" flag which causes the year to be included in the
session start time. This is useful when looking at old or long-running
wtmp files.

PR: bin/12982
Obtained from: KOJIMA Hajime <kjm@rins.ryukoku.ac.jp>, keramida
Reviewed by: keramida
MFC after: 1 week

Oops, unbreak the -d and -<n> options. The `snapfound' variable
needs to be retained across entries, and we need to exit(), not
return from doentry() when `maxrec' reaches 0. Move the code for
processing `maxrec' into printentry() for simplicity.

Split up the big wtmp() function to avoid long lines and code
duplication.

I've been meaning to do this for a while. Add an underscore to the
time_to_xxx() and xxx_to_time() functions. e.g. _time_to_xxx()
instead of time_to_xxx(), to make it more obvious that these are
stopgap functions & placemarkers and not meant to create a defacto
standard. They will eventually be replaced when a real standard
comes out of committee.

localtime() was being called on an int pointer (due to recent
utmp-related commits). fixed.

Document -d in usage.

Submitted by: Martin Kammerhofer <mkamm@sbox.tu-graz.ac.at>

Silence warnings and minor style fixes. Mostly constify and don't
assume that time_t is a long. Clamp down with WARNS=2.

Not objected to by: -audit

The last(1) choked if there were two successive "login" marks
found in wtmp(5) for the same TTY without in-between "logout"
mark.

This may be demonstrated by executing login(1), logging in and
out, and watching the last(1) output on this TTY:

: # last -tv7 -w
: ru ttyv7 Mon May 28 12:46 - 12:46 (00:00:01)
: ru ttyv7 Mon May 28 12:45 still logged in

The fix merely takes the second "login" mark as the "logout" for
the first "login" mark, if there were no "logout" mark in-between.
This restores the behavior of last.c,v 1.2:

: # last -tv7 -w
: ru ttyv7 Mon May 28 12:46 - 12:46 (00:00:01)
: ru ttyv7 Mon May 28 12:45 - 12:46 (00:00:25)

Silence from: -arch, dg

Implement snapshots. The new -d option allows the user to find out
who was logged in at a certain time and date.

Obtained from: OpenBSD

Don't attempt to parse %c

Used macro-API to <sys/queue.h>.

Submitted by: ben

getopt and friends are declared in <unistd.h>
getopt returns -1 not EOF.

Don't call printf with no format string.

Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by: msmith and others

Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by: phk
Reviewed by: phk
Approved by: mdodd

Reviewed by: Peter Hawkins <thepish@FreeBSD.org>
Add s and w flags to show duration in or with seconds.

Change variable from long to time_t where they are passed by reference
to time().

Add the year to the 'wtmp begins...' line.

PR: 6421
Submitted by: phk

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

Remove one space to produce the same output alignment
like in who, rwho, w, etc.

Don't dereference a free()ed pointer.

Closes PR bin/1909: 'last' coredumps if MALLOC_OPTIONS...

Localize time

Fixed a bug that caused last(1) to be extremely slow in some cases, and
made other performance improving changes. This improves the performance
of last(1) by as much as 32 times in some cases, and in more typical cases
is about twice as fast.
Added a BUGS section to the manual page to describe the behavior of last(1)
when a login shell terminates abnormally (and thus doesn't write a logout
record to the wtmp file).

Delete bogus referneces to timezone code internal header file `tzfile.h',
which is no longer bogusly installed in /usr/include.

BSD 4.4 Lite Usr.bin Sources