Maintainer	simons@cryp.to
Stability	provisional
Portability	POSIX
Safe Haskell	Safe
Language	Haskell2010

System.Posix.Syslog.Priority

Contents

Message Priorities

Description

FFI bindings to syslog(3) from POSIX.1-2008. This module is intended for purposes of low-level implementation. Users of this library should prefer safer and more convenient API provided by System.Posix.Syslog.

Synopsis

data Priority
- = Emergency
- | Alert
- | Critical
- | Error
- | Warning
- | Notice
- | Info
- | Debug
fromPriority :: Priority -> CInt

Message Priorities

data Priority Source #

Log messages are prioritized with one of the following levels:

>>> [minBound..maxBound] :: [Priority]
[Emergency,Alert,Critical,Error,Warning,Notice,Info,Debug]

The Ord instance for Priority considers the more urgent level lower than less urgent ones:

>>> Emergency < Debug
True
>>> minimum [minBound..maxBound] :: Priority
Emergency
>>> maximum [minBound..maxBound] :: Priority
Debug

Constructors

Emergency	the system is unusable
Alert	action must be taken immediately
Critical	critical conditions
Error	error conditions
Warning	warning conditions
Notice	normal but significant condition
Info	informational
Debug	debug-level messages

Instances

Bounded Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods minBound :: Priority # maxBound :: Priority #
Enum Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods succ :: Priority -> Priority # pred :: Priority -> Priority # toEnum :: Int -> Priority # fromEnum :: Priority -> Int # enumFrom :: Priority -> [Priority] # enumFromThen :: Priority -> Priority -> [Priority] # enumFromTo :: Priority -> Priority -> [Priority] # enumFromThenTo :: Priority -> Priority -> Priority -> [Priority] #
Eq Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods (==) :: Priority -> Priority -> Bool # (/=) :: Priority -> Priority -> Bool #
Ord Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods compare :: Priority -> Priority -> Ordering # (<) :: Priority -> Priority -> Bool # (<=) :: Priority -> Priority -> Bool # (>) :: Priority -> Priority -> Bool # (>=) :: Priority -> Priority -> Bool # max :: Priority -> Priority -> Priority # min :: Priority -> Priority -> Priority #
Read Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods readsPrec :: Int -> ReadS Priority # readList :: ReadS [Priority] # readPrec :: ReadPrec Priority # readListPrec :: ReadPrec [Priority] #
Show Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Methods showsPrec :: Int -> Priority -> ShowS # show :: Priority -> String # showList :: [Priority] -> ShowS #
Generic Priority Source #
Instance details Defined in System.Posix.Syslog.Priority Associated Types type Rep Priority :: Type -> Type # Methods from :: Priority -> Rep Priority x # to :: Rep Priority x -> Priority #
type Rep Priority Source #
Instance details Defined in System.Posix.Syslog.Priority type Rep Priority = D1 (MetaData "Priority" "System.Posix.Syslog.Priority" "hsyslog-5.0.2-4YPEwpeEGKZ6PP1UUUwS4g" False) (((C1 (MetaCons "Emergency" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "Alert" PrefixI False) (U1 :: Type -> Type)) :+: (C1 (MetaCons "Critical" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "Error" PrefixI False) (U1 :: Type -> Type))) :+: ((C1 (MetaCons "Warning" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "Notice" PrefixI False) (U1 :: Type -> Type)) :+: (C1 (MetaCons "Info" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "Debug" PrefixI False) (U1 :: Type -> Type))))

fromPriority :: Priority -> CInt Source #

Translate a Priority into the system-dependent identifier that's used by the syslog(3) implementation.