Manual Reference Pages  - <syslog.h> (P)

PROLOG

This manual page is part of the POSIX Programmer’s Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

CONTENTS

Name
Synopsis
Description
Application Usage
Rationale
Future Directions
See Also
Copyright

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 argument 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 setlogmask(). 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 original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


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