Operator precedence bug, "setlogmask(LOG_UPTO(LOG_INFO))" wasn't
working.
From: Ted Lemon <mellon@fugue.com>

use sprintf() instead of loop counts, for consistency
From: Craig Leres <leres@ee.lbl.gov>
KNF, from me

use __progname (from crt0) as default syslog tag if none specified

If you call syslog() with a pointer to ctime()'s static buffer, it gets
updated by syslog()'s call before copying the stuff out).
From: Craig Leres <leres@ee.lbl.gov>
The code contains '(void)sprintf

If you call syslog() with a pointer to ctime()'s static buffer, it gets
updated by syslog()'s call before copying the stuff out).
From: Craig Leres <leres@ee.lbl.gov>
The code contains '(void)sprintf(...)' and (now) '(void)strftime(...)' casts,
but sprintf() and strftime() both return a character count
From: Donn Seeley <donn@BSDI.COM>

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4.4BSD snapshot (revision 8.1); add 1993 to copyright

<sys/errno.h> -> <errno.h>

the logmask (from setlogmask(3)) and priority masking were wrong

syslog() checks mask set by setlogmask() (4.3BSD-reno/lib/4)

Add include files to get prototype declarations, and fix bugs found.

make error messages a little better, use constants in unistd.h

back out change to return error values

return EINVAL if the priority parameter to syslog/vsyslog is bad

move _PATH_LOGNAME to <sys/syslog.h>; fix priority bit test
change all syslog routines to return value, set errno correctly

off by one when logging to console (was missing \n)

new copyright notice

string.h is ANSI C include file

don't reject based on the facility number, syslogd can if necessary

need newline for console, too

don't worry about blocking on the console, or about inheriting the
console as the controlling terminal (fixed in kernel).

use waitpid to avoid swallowing children; minor cleanups

add LOG_PERROR

end format string, you silly boy!

put %m back in

add vsyslog

some general cleanup; move %m into _doprnt(); handle N arguments;
increase buffer size to 2K; block all signals when writing to console