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