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Linux 2.6 - man page for syslog.h (linux section 7posix)

<syslog.h>(P)			    POSIX Programmer's Manual			    <syslog.h>(P)

NAME
       syslog.h - definitions for system error logging

SYNOPSIS
       #include <syslog.h>

DESCRIPTION
       The <syslog.h> header shall define the following symbolic constants, zero or more of which
       may be OR'ed together to form the logopt option of openlog():

       LOG_PID
	      Log the process ID with each message.

       LOG_CONS
	      Log to the system console on error.

       LOG_NDELAY
	      Connect to syslog daemon immediately.

       LOG_ODELAY
	      Delay open until syslog() is called.

       LOG_NOWAIT
	      Do not wait for child processes.

       The following symbolic constants shall be defined as possible values of the facility argu-
       ment to openlog():

       LOG_KERN
	      Reserved for message generated by the system.

       LOG_USER
	      Message generated by a process.

       LOG_MAIL
	      Reserved for message generated by mail system.

       LOG_NEWS
	      Reserved for message generated by news system.

       LOG_UUCP
	      Reserved for message generated by UUCP system.

       LOG_DAEMON
	      Reserved for message generated by system daemon.

       LOG_AUTH
	      Reserved for message generated by authorization daemon.

       LOG_CRON
	      Reserved for message generated by clock daemon.

       LOG_LPR
	      Reserved for message generated by printer system.

       LOG_LOCAL0
	      Reserved for local use.

       LOG_LOCAL1
	      Reserved for local use.

       LOG_LOCAL2
	      Reserved for local use.

       LOG_LOCAL3
	      Reserved for local use.

       LOG_LOCAL4
	      Reserved for local use.

       LOG_LOCAL5
	      Reserved for local use.

       LOG_LOCAL6
	      Reserved for local use.

       LOG_LOCAL7
	      Reserved for local use.

       The following shall be declared as macros for constructing the maskpri argument to setlog-
       mask(). The following macros expand to an expression of type int when the argument pri  is
       an expression of type int:

       LOG_MASK(pri)
	      A mask for priority pri.

       The  following  constants shall be defined as possible values for the priority argument of
       syslog():

       LOG_EMERG
	      A panic condition was reported to all processes.

       LOG_ALERT
	      A condition that should be corrected immediately.

       LOG_CRIT
	      A critical condition.

       LOG_ERR
	      An error message.

       LOG_WARNING
	      A warning message.

       LOG_NOTICE
	      A condition requiring special handling.

       LOG_INFO
	      A general information message.

       LOG_DEBUG
	      A message useful for debugging programs.

       The following shall be declared as functions and may also be defined as	macros.  Function
       prototypes shall be provided.

	      void  closelog(void);
	      void  openlog(const char *, int, int);
	      int   setlogmask(int);
	      void  syslog(int, const char *, ...);

       The following sections are informative.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       The System Interfaces volume of IEEE Std 1003.1-2001, closelog()

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				    <syslog.h>(P)


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