sysctl(KERN_BOPOTIME) started returning a struct timespec in 2009.
Update to match.... We're slow but we get there eventually!

NFC for any of these programs, struct timeval and struct timespec
are the same size, and only the tv_sec field of boottime is used,
and that's unchanged.

branches: 1.40.28;
include <pwd.h>

branches: 1.39.2; 1.39.8;
Use __dead

Fix -Wsign-compare issue

branches: 1.37.6;
Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

Clarify how one is supposed to use the pointers returned by getutentries()
(the utmpentry.c code), specifically with respect to who owns them and
when to free them. Now they're owned by utmpentry.c, only. Abolish the
freeutentries() function, which was the wrong abstraction; add instead
endutentries(), which flushes out the internally managed memory.

Update callers as necessary. Some (e.g. talkd) had been leaking memory;
others (e.g. syslogd) had been accidentally freeing and reloading utmp
more often than necessary. There are a couple untidy bits in users and
rwhod that someone should look after sometime, maybe.

Fixes PR bin/35131, which was about talkd's memory leak.

branches: 1.35.6;
convert __attribute__s to applicable cdefs.h macros

branches: 1.34.10;
assign to wd.wd_recvtime rather than casting a pointer to it
to a time_t pointer to call time(3).

Off by one in copying stuff to struct whoent. Found by Liam Foy.

Sync usage with man page.

Add -u option: rwhod will drop privledges and become the given user.

reviewed by jwise

Patch from Liam J. Foy:
- cleanup sendto code.
- fix usage.

Change g flag to i as in the PR.
Don't allow interval to be set to > 11 minutes.
Rephrase option blurb.

PR/30648: Liam J. Foy: rwhod patch to reduce time interval between broadcasts

Remove a unnecessary semicolon and trailing spaces.

- Use the timer* macros from sys/time.h, no need to invent a new time add
function if it already exists.
- Improve a few function/variable names and use EXIT_FAILURE.

Initialize events not revents. Noted by Peter Postma. The timer changes he
can make himself :-)

Fixes from Liam J. Foy to use poll, and proper signals. (from OpenBSD)
While there, ansify, and fix const abuse.

Add (unsigned char) cast to ctype functions

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22366, verified by myself.

use bounded string op

PR/20318: Johnny Billquist: rwhod does not compile with -DDEBUG

use utmpx.

More format string cleanups by sommerfeld.

branches: 1.17.4;
avoid memory leak on realloc() error.

From FreeBSD bin/14844 (slightly modified): Due to signed calculations
with the packet size, a short packet would trigger an infinite loop
on little endian machines.

branches: 1.15.4;
Use pidfile(3).

branches: 1.14.2;
fix error in previous pointed out by bad. minor KNFing.

- use an array MAXHOSTNAMELEN+1 size to hold hostnames
- ensure hostname from gethostname() is nul-terminated in all cases
- minor KNF
- use MAXHOSTNAMELEN over various other values/defines
- be safe will buffers that hold hostnames

deprecate register, use warn/err

WARNSify

Lseek(2) usage cleanup: the use of L_SET/L_INCR/L_XTND is deprecated,
use SEEK_SET/SEEK_CUR/SEEK_END instead.

Fix some potential buffer overflow problems.
From David Holland <dholland@hcs.harvard.edu>

sync with 44lite

rwhod wasn't too happy after the off_t change - its lseek() to check the
boottime was broken. Replaced this code with kvm_nlist()/kvm_read() to be
more efficient.

kill bad casts

kill extern'd lseek()

From: mrm@sceard.com (M.R.Murphy)
Fix memory leak.

Add RCS identifiers.

Cleanup for GCC 2.

branches: 1.1.1;
after 0.2.2 "stable" patches applied