usr.bin: 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

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/

Handle NULL return from localtime(3) in ls(1) and find(1)

The ls(1) (with -l option) and find(1) (with -ls option) utilties
segment fault when operating on files with very large modification
times. A recent disk corruption set a spurious bit in the mtime
field of one of my files to 0x8000000630b0167 (576460753965089127)
which is in year 18,266,940,962. I discovered the problem when
running fsck_ffs(8) which uses ctime(3) to convert it to a readable
format. Ctime cannot fit the year into its four character field, so
returns ??? ??? ?? ??:??:?? ???? (typically Thu Nov 24 18:22:48 2021).

With the filesystem mounted, I used `ls -l' to see how it would
report the modification time and it segment faulted. The find(1)
program also segment faulted (see script below). Both these utilities
call the localtime(3) function to decode the modification time.
Localtime(3) returns a pointer to a struct tm (which breaks things
out into its component pieces: year, month, day, hour, minute,
second). The ls(1) and find(1) utilities then print out the date
based on the appropriate fields in the returned tm structure.

Although not documented in the localtime(3) manual page, localtime(3)
returns a NULL pointer if the passed in time translates to a year
that will not fit in an "int" (which if "int" is 32-bits cannot
hold the year 18,266,940,962). Since ls(1) and find(1) do not check
for a NULL struct tm * return from localtime(3), they segment fault
when they try to dereference it.

When localtime(3) returns NULL, the attached patches produce a date
string of "bad date val". This string is chosen because it has the
same number of characters (12) and white spaces (2) as the usual
date string, for example "Sep 3 22:06" or "May 15 2017".

The most recent ANSI standard for localtime(3) does say that localtime(3)
can return NULL (see https://pubs.opengroup.org/onlinepubs/9699919799/
and enter localtime in the search box). Our localtime(3) man page should
be updated to indicate that NULL is a possible return. More importantly,
there are over 100 uses of localtime(3) in the FreeBSD source tree (see
Differential Revision D36474 for the list). Most do not check for a NULL
return from localtime(3).

Reported by: Peter Holm
Reviewed by: kib, Chuck Silvers, Warner Losh
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36474

find(1): use correct type for readlink

find(1): deLINTify

Allow compiling usr.bin/find on Linux and Mac

When building FreeBSD the makefiles invoke find with various flags such as
`-s` that aren't supported in the native /usr/bin/find. To fix this I
build the FreeBSD version of find and use that when crossbuilding.

Inserting lots if #ifdefs in the code is rather ugly but I don't see a
better solution.

Reviewed By: brooks (mentor)
Approved By: jhb (mentor)
Differential Revision: https://reviews.freebsd.org/D13306

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

Use type-independent formats for printing nlink_t and ino_t.

Extracted from: ino64 work by gleb, mckusick
Discussed with: mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Fix usr.bin/ and usr.sbin/ build with a 64-bit ino_t.

Original code by: Gleb Kurtsou

Get rid of major/minor number distinction.

As of FreeBSD 6, devices can only be opened through devfs. These device
nodes don't have major and minor numbers anymore. The st_rdev field in
struct stat is simply based a copy of st_ino.

Simply display device numbers as hexadecimal, using "%#jx". This is
allowed by POSIX, since it explicitly states things like the following
(example taken from ls(1)):

"If the file is a character special or block special file, the
size of the file may be replaced with implementation-defined
information associated with the device in question."

This makes the output of these commands more compact. For example, ls(1)
now uses approximately four columns less. While there, simplify the
column length calculation from ls(1) by calling snprintf() with a NULL
buffer.

Don't be afraid; if needed one can still obtain individual major/minor
numbers using stat(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.

Revert r207677 which is considered a violation of style(9).

Pointed out by: bde
Pointy hat to: delphij

Move SCCS tags to comments as they were already #if 0'ed.

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.

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

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

Use a larger field for the size in blocks; the current width (4 digits)
is only good for 5 MB.

Fix all WARNS. Checked with "make WARNS=9". Remove unused file.

- Use MAXLOGNAME - 1 rather than UT_NAMESIZE.
- Remove the inclusion of <utmp.h>.

Fix to WARNS=2 level.

Tested by: AXP gcc 3.1

Fix SCM IDs.

For the sake of consistency, remove an include that is included in
a previous include. All other files in this app do this.

Remove __P().

Fixed divots that I created when I moved prototypes of group_from_gid
and user_from_uid to grp.h and pwd.h. Update the man pages.

Submitted by: David Malone
Pointy hat to: imp

They add the following commands:
-anewer
-cnewer
-mnewer
-okdir
-newer[acm][acmt]

With it, you can form queries like

find . -newerct '1 minute ago' -print

As an extra bonus, the program is ANSI-fied - the original version
relies on some obscure features of K&R C.

(This PR was submitted in 1999, and the submittor has kept the patch
updated ever since, hats off for him guys, and how about you close a PR ??)

PR: 9374
Submitted by: Martin Birgmeier <Martin.Birgmeier@aon.at>

Don't attempt to parse %c, use nl_langinfo instead

MAXPATHLEN already accounts for the trailing NUL, so no need to add one in.
In addition, since we pass readlink MAXPATHLEN - 1, we would have never have
used that extra byte anyway.

This patch adds the -mindepth and -maxdepth options to find(1), which
behave as in GNU find (and of course as described in the manual page
diff included). I think these options would be useful for some people.

Some missing $FreeBSD$ tags are also added.

The patch was slightly modified (send-pr mangling of TABS).

PR: bin/18941
Submitted by: Ben Smithurst <ben@scientia.demon.co.uk>

Fixed printf format errors.

Make sure we pass the length - 1 to readlink, since it adds its own
NUL at the end of the path.

Inspired by: OpenBSD's changes in this area by theo de raadt

Localize it

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