chroot-start-stop-status

#!/bin/sh

# https://gist.github.com/82d8730e69a501694d7c3a15233b29c9 / https://gist.githubusercontent.com/pleasemarkdarkly/82d8730e69a501694d7c3a15233b29c9/raw/5a39090a55c5b552a787e1d9140960432514c3b5/chroot-start-stop-status

edit_chroot_start_stop_status () {
	echo gist-paste -u 82d8730e69a501694d7c3a15233b29c9
	nano ./chroot-start-stop-status
	gist-paste chroot-start-stop-status -u 82d8730e69a501694d7c3a15233b29c9
	echo $0_
}

# Package
HOSTNAME="Blackbox8000"
PACKAGE="debian-chroot"
DNAME="Debian Chroot"

# Others
INSTALL_DIR="/usr/local/${PACKAGE}"
PATH="${INSTALL_DIR}/bin:${PATH}"
CHROOTTARGET=`realpath ${INSTALL_DIR}/var/chroottarget`

start_daemon ()
{
   echo "chroot start_daemon() start-stop-status"
    # Mount if install is finished
    if [ -f ${INSTALL_DIR}/var/installed ]; then
        # Make sure we don't mount twice
	echo "mounting relevant system directories"
	grep -q "${CHROOTTARGET}/proc " /proc/mounts || mount -vt proc proc ${CHROOTTARGET}/proc
        grep -q "${CHROOTTARGET}/sys " /proc/mounts || mount -vt sysfs sys ${CHROOTTARGET}/sys
        grep -q "${CHROOTTARGET}/dev " /proc/mounts || mount -vo bind /dev ${CHROOTTARGET}/dev
        grep -q "${CHROOTTARGET}/dev/pts " /proc/mounts || mount -vo bind /dev/pts ${CHROOTTARGET}/dev/pts
        grep -q "${CHROOTTARGET}/run " /proc/mounts || mount -vo bind /run ${CHROOTTARGET}/run
	grep -q "${CHROOTTARGET}/home " /proc/mounts || mount -vo bind /volume1/systems/synology_918+/mounts/homes ${CHROOTTARGET}/home
	grep -q "${CHROOTTARGET}/root " /proc/mounts || mount -vo bind /volume1/systems/synology_918+/mounts/debian-chroot.root ${CHROOTTARGET}/root

	[ ! -d ${CHROOTTARGET}/volume1 ] && mkdir -p ${CHROOTTARGET}/volume1
        grep -q "${CHROOTTARGET}/volume1 " /volume1 || mount -o bind /volume1 ${CHROOTTARGET}/volume1
	[ ! -d ${CHROOTTARGET}/volumeUSB1 ] && mkdir -p ${CHROOTTARGET}/volumeUSB1
	grep -q "${CHROOTTARGET}/volumeUSB1 " /volumeUSB1 || mount -o bind /volumeUSB1 ${CHROOTTARGET}/volumeUSB1
	[ ! -d ${CHROOTTARGET}/volumeUSB2 ] && mkdir -p ${CHROOTTARGET}/volumeUSB2
	grep -q "${CHROOTTARGET}/volumeUSB2 " /volumeUSB2 || mount -o bind /volumeUSB2 ${CHROOTTARGET}/volumeUSB2

        # Start all services
        ${INSTALL_DIR}/app/start.py
    fi
}

stop_daemon ()
{
    # Stop running services
    ${INSTALL_DIR}/app/stop.py

    # Unmount
    umount ${CHROOTTARGET}/dev/pts
    umount ${CHROOTTARGET}/dev
    umount ${CHROOTTARGET}/sys
    umount ${CHROOTTARGET}/proc
    umount ${CHROOTTARGET}/run
    umount ${CHROOTTARGET}/home
    umount ${CHROOTTARGET}/root
    umount ${CHROOTTARGET}/volume1
    `grep -q "${CHROOTTARGET}/volumeUSB1 " /proc/mounts` && umount ${CHROOTTARGET}/volumeUSB1
    `grep -q "${CHROOTTARGET}/volumeUSB2 " /proc/mounts` && umount ${CHROOTTARGET}/volumeUSB2
}

daemon_status ()
{
    	`grep -q "${CHROOTTARGET}/proc " /proc/mounts` && \
	`grep -q "${CHROOTTARGET}/sys " /proc/mounts` && \
	`grep -q "${CHROOTTARGET}/dev " /proc/mounts` && \
	`grep -q "${CHROOTTARGET}/dev/pts " /proc/mounts` && \
	`grep -q "${CHROOTTARGET}/run " /proc/mounts`

	# `grep -q "${CHROOTTARGET}/home " /proc/mounts` && \
	# `grep -q "${CHROOTTARGET}/root " /proc/mounts` && \
	# `grep -q "${CHROOTTARGET}/volume1 " /proc/mounts` && \
	# `grep -q "${CHROOTTARGET}/volumeUSB1 " /proc/mounts` && \
	# `grep -q "${CHROOTTARGET}/volumeUSB2 " /proc/mounts`
}

case $1 in
    start)
        if daemon_status; then
            echo ${DNAME} is already running
            exit 0
        else
            echo Starting ${DNAME} ...
            start_daemon
            exit $?
        fi
        ;;
    stop)
        if daemon_status; then
            echo Stopping ${DNAME} ...
            stop_daemon
            exit 0
        else
            echo ${DNAME} is not running
            exit 0
        fi
        ;;
    status)
        if daemon_status; then
            echo ${DNAME} is running
            exit 0
        else
            echo ${DNAME} is not running
            exit 1
        fi
        ;;
    chroot)
        chroot ${CHROOTTARGET} /usr/bin/zsh
        ;;
    *)
        exit 1
        ;;
esac