hashboot/init/openrc

#!/sbin/openrc-run
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

description="Check integrity of files in /boot"

depend()
{
    need localmount
    before xdm
}

start()
{
    ebegin "Checking integrity of files in /boot"

    # See if hashboot is accessible
    which hashboot > /dev/null || return 255

    hashboot check
    ret=$?
    # If return code is 1-3 or 10-13
    if [ ${ret} -ge 1 ] && [ ${ret} -le 3 ] || [ ${ret} -ge 10 ] && [ ${ret} -le 13 ]; then
        echo -n "Recover files? [y/N] "
        read -r yesno
        if [ "${yesno}" == "y" ]; then
            hashboot recover
        fi

        echo "Dropping to shell. Type exit to continue."
        sh
        return ${ret}
    elif [ ${ret} != 0 ]; then
        eerror "Unexpected error number ${ret}."
        return ${ret}
    fi

    eend 0
}