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

Instances details

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-DxYbQJmCVvkHiRdHl39Obj" '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.