syslog man page on HP-UX

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syslog(3C)							    syslog(3C)

       syslog(), openlog(), closelog(), setlogmask() - control system log

       The  ANSI  C "" construct denotes a variable length argument list whose
       optional [or required] members are given in the associated comment

       writes a message onto the system log maintained by
		      (see syslogd(1M)).  The message is tagged with priority.
		      The  message  is	similar	 to a printf(3S) format string
		      except that is replaced by the error message  associated
		      with the current value of A trailing newline is added if

		      This message is read by and written to the  system  con‐
		      sole, log files, selected users' terminals, or forwarded
		      to on another host as appropriate.

		      priority is encoded as the logical OR of a level	and  a
		      facility.	  The  level signifies the urgency of the mes‐
		      sage, and facility signifies  the	 subsystem  generating
		      the message.  facility can be encoded explicitly in pri‐
		      ority, or a  default  facility  can  be  set  with  (see

		      level is selected from an ordered list:

			   A panic condition.  This  is	 normally broadcast to
					       all users.

			   A condition that should be corrected immediately,
					       such  as	 a  corrupted	system

			   Critical conditions, such as hard device errors.


			   Warning messages.

			   Conditions that are not error conditions,
					       but  should possibly be handled

			   Informational messages.

			   Messages that contain information
					       normally	 of  use   only	  when
					       debugging a program.

		      does not log a message that does not have a level set.

		      If  cannot  pass the message to it attempts to write the
		      message on if the option is set (see below).

       can be called to initialize the log file,
		      if special processing is needed.	ident is a string that
		      precedes every message.  logopt is a mask of bits, logi‐
		      cally OR'ed together, indicating logging	options.   The
		      values for logopt are:

			   Log the process     ID  with	 each  message; useful
					       for identifying	instantiations
					       of daemons.

			   Force  writing messages to the console if unable to
			   send it to
					       This option is safe to  use  in
					       daemon  processes  that have no
					       controlling  terminal   because
					       forks  before  opening the con‐

			   Open the connection to
					       immediately.    Normally,   the
					       open is delayed until the first
					       message	is  logged.   This  is
					       useful  for  programs that need
					       to manage the  order  in	 which
					       file descriptors are allocated.

			   Do  not wait for children forked to log messages on
			   the console.
					       This option should be  used  by
					       processes that enable notifica‐
					       tion of child  termination  via
					       because	might otherwise block,
					       waiting for a child whose  exit
					       status  has  already  been col‐

		      facility encodes a default facility to  be  assigned  to
		      all  messages  written  subsequently by with no explicit
		      facility encoded.

			   Messages generated by the kernel.
					       These cannot  be	 generated  by
					       any user processes.

			   Messages generated by random user processes.
					       This  is	 the  default facility
					       identifier if  none  is	speci‐

			   The mail system.

			   System daemons, such as
					       inetd(1M), ftpd(1M), etc.

			   The authorization system:
					       login(1),   su(1),   getty(1M),

			   Messages generated internally by

			   The line printer spooling system:
					       lp(1), lpsched(1M), etc.

			   Messages generated by the

			   Messages generated by the UUCP system.

			   Messages generated by the CRON daemon.

			   Reserved for local use.
					       Similarly for through

		      facility and level uses an encoded code for  logging  in
		      message.	The encoded code for facility and level are as

       closes the log file.

       sets the log priority mask to
		      maskpri and returns the previous mask.  Calls to with  a
		      priority	not set in maskpri are rejected.  The mask for
		      an individual priority pri is calculated by the macro  ;
		      the  mask	 for all priorities up to and including toppri
		      is given by the macro (toppri).  By default, all priori‐
		      ties are logged.

       fails if any of the following conditions are encountered:

	      The named pipe is blocked for writing.

	      The named pipe bold) could not be opened successfully.

       logs a message regarding some sort of unexpected and serious error:

       uses  to arrange to log its process ID, to log to the console if neces‐
       sary, and to log in the name of the daemon facility:

       Arrange to log messages only at levels and lower:

       Typical usage of to log a connection:

       If the facility has not been set with it defaults to

       Explicitly set the facility for this message:

       A call to has no effect unless the syslog daemon is running  (see  sys‐
       logd(1M)).   does  not  copy  and store the ident string internally; it
       stores only a character pointer.	 Therefore it is the responsibility of
       the  programmer to make sure that the ident argument points to the cor‐
       rect string until the log file is closed.

       was developed by the University of California, Berkeley.

       logger(1), syslogd(1M), thread_safety(5).


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