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authorGeorg Brandl <georg@python.org>2007-08-15 14:28:01 (GMT)
committerGeorg Brandl <georg@python.org>2007-08-15 14:28:01 (GMT)
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+
+: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>``.
+