gistfile1.txt

root_symlink_rule() {
        eval $(/sbin/udevadm info --export --export-prefix=ROOT_ --device-id-of-file=/)
        [ "$ROOT_MAJOR" -gt 0 ] || return

        mkdir -m 0755 -p /dev/.udev/rules.d/
        echo "\
ACTION==\"add|change\", SUBSYSTEM==\"block\", \
ENV{MAJOR}==\"$ROOT_MAJOR\", ENV{MINOR}==\"$ROOT_MINOR\", \
SYMLINK+=\"root\"" > /dev/.udev/rules.d/10-root-symlink.rules
}

case "$1" in
        start) 
                # create /dev/root symlink with dynamic rule
                root_symlink_rule

                # start udevd
                echo -n "Starting udevd: "
                /sbin/udevd --daemon
                if [ $? -ne 0 ]; then
                        rc_status -v
                        rc_exit
                fi
                rc_status -v