System.Systemd.Daemon

Reexports

Definitions

notify : Bool -> String -> IO (Maybe ())

  Notify systemd about an event
  After notifying systemd the Bool parameter specify if the environment
  shall be unset (Further call to notify will fail).
  The String is the event to pass.
  Returns Nothing if the program was not started with systemd
  or the environment was previously unset.

Visibility: export

notifyWithFD : Bool -> String -> Socket AF_UNIX -> IO (Maybe ())

  Same as `notify` but send along a socket to be stored.
  It is up to the caller to properly set the message
  (i.e: do not forget to set FDSTORE=1).

Visibility: export

notifyWatchdog : IO (Maybe ())

  Notify the watchdog that the program is still alive.

Visibility: export

notifyReady : IO (Maybe ())

  Notify the systemd that the program is ready.

Visibility: export

notifyPID : Int -> IO (Maybe ())

  Notify systemd of the PID of the program (for after a fork).

Visibility: export

notifyReloading : IO (Maybe ())

  Notify systemd that the service is reloading its configuration.

Visibility: export

notifyStopping : IO (Maybe ())

  Notify systemd that the service is beginning its shutdown.

Visibility: export

notifyErrno : Errno -> IO (Maybe ())

  Notify systemd of an 'Errno' error.

Visibility: export

notifyStatus : String -> IO (Maybe ())

  Notify systemd of the status of the program.
  An arbitrary String can be passed.

Visibility: export

notifyBusError : String -> IO (Maybe ())

  Notify systemd of a DBUS error like.
  Correct formatting of the String is left to the caller.

Visibility: export

storeFd : Socket AF_UNIX -> IO (Maybe ())

  Notify systemd to store a socket for us.
  To be used along `getActivatedSockets` during a restart.
  Useful for zero downtime restart.

Visibility: export

storeFdWithName : Socket AF_UNIX -> String -> IO (Maybe ())

  Notify systemd to store a socket for us and specify a name.
  To be used along `getActivatedSocketsWithNames` during a restart.
  Useful for zero downtime restart.

Visibility: export

getActivatedSockets : IO (Maybe (List (Socket AF_UNIX)))

  Return a list of activated sockets, if the program was started with
  socket activation.
  The sockets are in the same order as in the associated .socket file.
  The sockets will have their family, type, and status set appropriately.
  Returns Nothing in systems without socket activation (or
  when the program was not socket activated).

Visibility: export

getActivatedSocketsWithNames : IO (Maybe (List (Socket AF_UNIX, String)))

  Same as `getActivatedSockets` but return also the names associated
  with those sockets if `storeFdWithName` was used or specified in the .socket file.
  If `storeFd` was used to transmit the socket to systemd, the name will be a generic one
  (i.e: usally "stored").

Visibility: export