grub-btrfs/grub-btrfsd.sysvinit.initd at 320fd4bdff79bab1c64a60a65b50e3d4ba3fb136 · dominic-deguzman/grub-btrfs · GitHub

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#!/bin/sh
### BEGIN INIT INFO
# Provides:          grub-btrfsd
# Required-Start:    $local_fs $syslog
# Required-Stop:     $local_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Regenerate grub-btrfs.cfg
# Description:       Monitors btrfs snapshots created with snapper
#                    or Timeshift and automatically regenerates
#                    grub-btrfs.cfg.
### END INIT INFO

PATH=/usr/sbin:/usr/bin:/sbin:/bin

DESC="grub-btrfs snapshot daemon"
NAME=grub-btrfsd
DAEMON=/usr/bin/$NAME
PIDFILE=/run/$NAME.pid

SCRIPTNAME=/etc/init.d/$NAME

SNAPSHOTS="/.snapshots" # Snapper in the root directory
# SNAPSHOTS="/run/timeshift/backup/timeshift-btrfs/snapshots" # Timeshift < v22.06

## Optional arguments to run with the daemon
# Append options to this like this:
# DAEMON_ARGS="--syslog --timeshift-auto --verbose"
# Possible options are:
# -t, --timeshift-auto  Automatically detect Timeshifts snapshot directory for timeshift >= 22.06
# -o, --timeshift-old   Look for snapshots in directory of Timeshift <v22.06 (requires --timeshift-auto)
# -l, --log-file        Specify a logfile to write to
# -v, --verbose         Let the log of the daemon be more verbose
# -s, --syslog          Write to syslog

DAEMON_ARGS="--syslog" # Snapper
# DAEMON_ARGS="--syslog --timeshift-auto --verbose" # Timeshift >= 22.06

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Load LSB init functions.
# This is the path for Debian and Devuan, may vary on other distributions.
. /lib/lsb/init-functions

do_start() {
    start-stop-daemon \
        --start \
        --background \
        --make-pidfile \
        --pidfile "$PIDFILE" \
        --exec "$DAEMON" -- \
        $DAEMON_ARGS \
        "$SNAPSHOTS"
}

do_stop() {
    start-stop-daemon \
        --stop \
        --quiet \
        --retry=TERM/30/KILL/5 \
        --pidfile "$PIDFILE"
}

case "$1" in
    start)
        log_daemon_msg "Starting $DESC" "$NAME"
        if do_start; then
            log_end_msg 0
        else
            log_end_msg 1
        fi
        ;;
    stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        if do_stop; then
            log_end_msg 0
        else
            log_end_msg 1
        fi
        ;;
    restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        sleep 1
        if do_start; then
            log_end_msg 0
        else
            log_end_msg 1
        fi
        ;;
    status)
        status_of_proc -p "$PIDFILE" "$DAEMON" "$NAME"
        exit $?
        ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|status}"
        exit 2
        ;;
esac

exit 0