borgmatic/borgmatic/signals.py

import os
import signal


def _handle_signal(signal_number, frame):  # pragma: no cover
    '''
    Send the signal to all processes in borgmatic's process group, which includes child process.
    '''
    os.killpg(os.getpgrp(), signal_number)


def configure_signals():  # pragma: no cover
    '''
    Configure borgmatic's signal handlers to pass relevant signals through to any child processes
    like Borg. No that SIGINT gets passed through already even without these changes.
    '''
    for signal_number in (signal.SIGHUP, signal.SIGTERM, signal.SIGUSR1, signal.SIGUSR2):
        signal.signal(signal_number, _handle_signal)