Edit File: syslog.txt
:mod:`syslog` --- Unix syslog library routines ============================================== .. module:: syslog :platform: Unix :synopsis: An interface to the Unix syslog library routines. This module provides an interface to the Unix ``syslog`` library routines. Refer to the Unix manual pages for a detailed description of the ``syslog`` facility. The module defines the following functions: .. function:: syslog([priority,] message) Send the string *message* to the system logger. A trailing newline is added if necessary. Each message is tagged with a priority composed of a *facility* and a *level*. The optional *priority* argument, which defaults to :const:`LOG_INFO`, determines the message priority. If the facility is not encoded in *priority* using logical-or (``LOG_INFO | LOG_USER``), the value given in the :func:`openlog` call is used. .. function:: openlog(ident[, logopt[, facility]]) Logging options other than the defaults can be set by explicitly opening the log file with :func:`openlog` prior to calling :func:`syslog`. The defaults are (usually) *ident* = ``'syslog'``, *logopt* = ``0``, *facility* = :const:`LOG_USER`. The *ident* argument is a string which is prepended to every message. The optional *logopt* argument is a bit field - see below for possible values to combine. The optional *facility* argument sets the default facility for messages which do not have a facility explicitly encoded. .. function:: closelog() Close the log file. .. function:: setlogmask(maskpri) Set the priority mask to *maskpri* and return the previous mask value. Calls to :func:`syslog` with a priority level not set in *maskpri* are ignored. The default is to log all priorities. The function ``LOG_MASK(pri)`` calculates the mask for the individual priority *pri*. The function ``LOG_UPTO(pri)`` calculates the mask for all priorities up to and including *pri*. The module defines the following constants: Priority levels (high to low): :const:`LOG_EMERG`, :const:`LOG_ALERT`, :const:`LOG_CRIT`, :const:`LOG_ERR`, :const:`LOG_WARNING`, :const:`LOG_NOTICE`, :const:`LOG_INFO`, :const:`LOG_DEBUG`. Facilities: :const:`LOG_KERN`, :const:`LOG_USER`, :const:`LOG_MAIL`, :const:`LOG_DAEMON`, :const:`LOG_AUTH`, :const:`LOG_LPR`, :const:`LOG_NEWS`, :const:`LOG_UUCP`, :const:`LOG_CRON` and :const:`LOG_LOCAL0` to :const:`LOG_LOCAL7`. Log options: :const:`LOG_PID`, :const:`LOG_CONS`, :const:`LOG_NDELAY`, :const:`LOG_NOWAIT` and :const:`LOG_PERROR` if defined in ``<syslog.h>``.
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