.TH LOGMSG 3 12/31/79
.SH NAME
logmsg \- log a message on the log device
.SH SYNOPSIS
# include <log.h>

logmsg(pri, fmt, args)
.br
char *fmt;

initlog(name, flags, mode)
.br
char *name;
.SH DESCRIPTION
.I Logmsg
acts like a simple printf
into a log file.
Formats are limited to
``%s'', ``%d'', ``%c'', and ``%o'';
no modifiers
(such as ``%.4s'')
are allowed.
In addition,
``%m'' will print out the value of
.I errno
in symbolic form.
.I Logmsg
will append a newline to the message
if there is not one already,
and writes the message in one physical write
to keep it from being fragmented by the system.
.PP
Messages have priorities between one and nine,
specified by
.I pri.
Legal priorities are described in syslog(8).
.PP
The
.I mode
parameter describes where to log the output.
.IP LOG_NULL \w'LOG_CLOSE'u+2n
Don't change anything.
This will cause the log to be output
on file descriptor 2.
.IP LOG_SOUT
Merges standard and diagnostic outputs
and logs on the diagnostic output.
This should only be used by programs
that have
.I only
log output \- such as daemons.
.IP LOG_DIAG
Opens the diagnostic output to be the log device
and logs there.
.IP LOG_INDEP
Opens a seperate file descriptor for the log.
.IP LOG_CLOSE
Closes the log.
.PP
The
.I flags
parameter arranges for special features.
These options can be ORed together.
.IP LOG_PID \w'LOG_COOLIT'u+2n
Log the process id with each message.
.IP LOG_TIME
Log the current time-of-day with each message.
Since
.I syslog
does this automatically,
this is only useful when outputing directly to a terminal
or file.
(Actually, this is not currently supported.)
.IP LOG_COOLIT
Supresses output of priority tags on messages.
(Not supported.)
.SH FILES
/dev/log \- the log file
.SH SEE\ ALSO
syslog(8)