Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update nologin(5) to match the modern reality of login.conf(5) and PAM.

Use __unused macro instead of a bare void for main().

Suggested by: nectar

nologin(8) does not seem to require any command line parameters,
so remove argc and argv from main() argument.

At the same time, user and tt is not likely to be changed during
execution so mark them const.

This commit should guarantee nologin to pass WARNS=6.

Tested on: i386
MFC After: 1 month

NOSHARED -> NO_SHARED

Per letter dated July 22, 1999 remove 3rd clause of Berkeley derived software
(with permission of addtional copyright holders where appropriate)

Assorted markup, grammar, and spelling fixes.

Add standard copyright notice; fix style bugs. (Reported by bde)
Remove NO_NOLOGIN_LOG option now that we're off the root partition.

When nologin(8) is installed in /usr/sbin/, create a symlink from
/sbin/nologin for compatibility purposes. Also, remove the NO_NOLOGIN_LOG
option; we don't need to worry about conserving space as much on the /usr
partition.

Note that usr.sbin/nologin is not yet hooked up to the build.

Report login attempts to syslog. Due to the statically-linked nature of
nologin(8), this causes a considerable (100K) increase in the binary size,
so I've added a NO_LOGIN_LOG option which disables this.

While I'm here, s/sizeof(MESSAGE)/sizeof(MESSAGE) - 1/, in order to
avoid writing the string-terminating zero byte.

No complaints from: -current
Approved by: rwatson (mentor)

Remove the BUGS section introduced in rev 1.11 now that the problem
has been addressed.

Reimplement nologin(8) as a C program. This allows us to statically
link it at low cost and avoid environment poisoning attacks associated
with LD_LIBRARY_PATH.

Suggested by: rwatson

Document nologin(8) as being insecure in conjunction with a dynamic
root and suggest alternatives.

The .Nm utility

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

beforeinstall -> SCRIPTS.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

mdoc(7) police: removed history info from the .Os FreeBSD call.

mdoc(7) police: use the new features of the Nm macro.

more removal of trailing periods from SEE ALSO.

Be a little clearer about the relationship between these two.

PR: docs/20067
Submitted by: Takayuki Hagihara

$Id$ -> $FreeBSD$

Added xref to nologin(5).

Added xref to nologin(8).

Oops, I missed a few more /etc/nologin references yesterday. It appears
my check of the tree was incomplete. Sorry guys.

Reported by: Ben Smithurst <ben@scientia.demon.co.uk>

Add Id. .Nm nologin -> .Nm.

An odd merge from 2.2 to -current. Somehow that 2.2 nologin.5
man page was in better shape than the 3.0-current version,
so I'm committing the 2.2 version to 3.0. Whatever happened,
it was my fault :-).

Plug a security hole involving $ENV forwarding over telnet. Sigh, i
thought i've long since done this.

/sbin -> ${BINDIR}

Now that we have a manpage, don't have the 'clean' target be a NO-OP.

Fix a bunch of spelling errors.

A manpage. May be the file nologin.5 should located in
src/share/man/man5.

Change `install' to `${INSTALL}' so that default install flags can be
specified in the top level Makefiles.

Convert to our man installation style. Also fixed long-standing bug
in `fastboot'/`fasthalt' in which the interpreter would hang around
after `reboot' or `halt' is run, causing an irritating ``Killed'' message.

BSD 4.4 Lite sbin Sources

Note: XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.