buildroot

#!/bin/sh

#

# Starts dropbear sshd.

#

​

# Allow a few customizations from a config file

test -r /etc/default/dropbear && . /etc/default/dropbear

​

start() {

    DROPBEAR_ARGS="$DROPBEAR_ARGS -R"

​

    # If /etc/dropbear is a symlink to /var/run/dropbear, and

    #   - the filesystem is RO (i.e. we can not rm the symlink),

    #     create the directory pointed to by the symlink.

    #   - the filesystem is RW (i.e. we can rm the symlink),

    #     replace the symlink with an actual directory

    if [ -L /etc/dropbear \

         -a "$(readlink /etc/dropbear)" = "/var/run/dropbear" ]

    then

        if rm -f /etc/dropbear >/dev/null 2>&1; then

            mkdir -p /etc/dropbear

        else

            echo "No persistent location to store SSH host keys. New keys will be"

            echo "generated at each boot. Are you sure this is what you want to do?"

            mkdir -p "$(readlink /etc/dropbear)"

        fi

    fi

​

    printf "Starting dropbear sshd: "

    umask 077

​

    start-stop-daemon -S -q -p /var/run/dropbear.pid \

        --exec /usr/sbin/dropbear -- $DROPBEAR_ARGS

    [ $? = 0 ] && echo "OK" || echo "FAIL"

}

stop() {

    printf "Stopping dropbear sshd: "

    start-stop-daemon -K -q -p /var/run/dropbear.pid

    [ $? = 0 ] && echo "OK" || echo "FAIL"

}

restart() {

    stop

    start

}

​

case "$1" in

  start)

    start

    ;;

  stop)

    stop

    ;;

  restart|reload)

    restart

    ;;

  *)

    echo "Usage: $0 {start|stop|restart}"

    exit 1

esac

​

exit $?