System.Posix.Syslog.Options

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.

Documentation

data Option

The function openlog allows one to configure a handful of process-wide options that modify the bahavior of the syslog funcion. These options are pid, cons, odelay, and ndelay.

Constructors

LogPID

Log the pid with each message.

Console

Log on the console if errors occur while sending messages.

DelayedOpen

Delay all initialization until first syslog() call (default).

ImmediateOpen

Initalize the syslog system immediately.

DontWaitForChildren

The syslog system should not attempt to wait for child process it may have created. This option is required by applications who enable SIGCHLD themselves.

Instances

Bounded Option

Methods

minBound :: Option

maxBound :: Option

Enum Option

Methods

succ :: Option -> Option

pred :: Option -> Option

toEnum :: Int -> Option

fromEnum :: Option -> Int

enumFrom :: Option -> [Option]

enumFromThen :: Option -> Option -> [Option]

enumFromTo :: Option -> Option -> [Option]

enumFromThenTo :: Option -> Option -> Option -> [Option]

Eq Option

Methods

(==) :: Option -> Option -> Bool

(/=) :: Option -> Option -> Bool

Read Option

Methods

readsPrec :: Int -> ReadS Option

readList :: ReadS [Option]

readPrec :: ReadPrec Option

readListPrec :: ReadPrec [Option]

Show Option

Methods

showsPrec :: Int -> Option -> ShowS

show :: Option -> String

showList :: [Option] -> ShowS

Generic Option

Associated Types

type Rep Option :: * -> *

Methods

from :: Option -> Rep Option x

to :: Rep Option x -> Option

type Rep Option

type Rep Option = D1 (MetaData "Option" "System.Posix.Syslog.Options" "hsyslog-5.0.1-24pighp6aYiFDQiBZ9eKP9" False) ((:+:) ((:+:) (C1 (MetaCons "LogPID" PrefixI False) U1) (C1 (MetaCons "Console" PrefixI False) U1)) ((:+:) (C1 (MetaCons "DelayedOpen" PrefixI False) U1) ((:+:) (C1 (MetaCons "ImmediateOpen" PrefixI False) U1) (C1 (MetaCons "DontWaitForChildren" PrefixI False) U1))))

fromOption :: Option -> CInt

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