#!/bin/sh
#----------------------------------------------------------------------------
# /etc/init.d/checkfs - initial boot script
#
# Creation   :  2015-06-13 hbfl
# Last Update:  $Id$
#
# Copyright (c) 2015-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

lsb=false

if ${lsb}
then
    # read init-functions
    . /lib/lsb/init-functions
else
    # read functions
    . /etc/init.d/functions
fi

# ---------------------------------------------------------------------------
# usage
# ---------------------------------------------------------------------------
usage()
{
cat <<EOF

 Usage:
 ${0}
                -q, --quiet      suppress all normal output
                [start]
EOF
}
# ---------------------------------------------------------------------------
# start
# ---------------------------------------------------------------------------
start()
{
    # with /fastboot you can drop the filesystemcheck
    if [ -f /fastboot ]
    then
        msg="/fastboot found, will omit"
        msg="${msg} file system checks as requested."
        if ${lsb}
        then
            log_info_msg "${msg} \n"
        else
            boot_mesg " * ${msg}"
        fi
        exit 0
    fi

    if ${lsb}
    then
        log_info_msg "Mounting root file system in read-only mode... "
    else
        boot_mesg " * Mounting root file system in read-only mode... "
    fi

    /bin/mount -n -o remount,ro / >/dev/null


    if [ ${?} -eq 0 ]
    then
        # -C display output with progressbar
        FSCK_PROGRESS=''
        if [ "`tty`" = "/dev/console" ]
        then
            FSCK_PROGRESS="-C"
        fi

        # force fsck, if /forcefsck exist
        # (e.g. from shutdown -rF now)
        # note that this reboots after fsck
        # and fsck again, afterwards continue booting
        FSCK_FORCE=''
        if [ -f /forcefsck ]
        then
            FSCK_FORCE="-f"
        fi

        if ${lsb}
        then
            log_info_msg "Checking file systems...\n"
        else
            boot_mesg " * Checking file systems..."
        fi
        /sbin/fsck ${FSCK_PROGRESS} -A -p  ${FSCK_FORCE} 2>/dev/null
        fsck_ret=${?}

        case ${fsck_ret} in
        0|1)
            # nothing to do
            ;;
        2|3)
            /bin/sync
            /sbin/reboot -f
            ;;
        *)
            echo
            echo "fsck failed.  Please repair manually and reboot. The root"
            echo "file system is currently mounted read-only. To remount it"
            echo "read-write do:"
            echo
            echo "   bash# mount -n -o remount,rw /"
            echo
            echo "Attention: Only CONTROL-D will reboot the system in this"
            echo "maintanance mode. shutdown or reboot will not work."
            echo
            PS1="(repair filesystem) # "
            export PS1
            /bin/sh </dev/console >/dev/console 2>&1

            # if the user has mounted something rw, this should be umounted
            echo "Unmounting file systems (ignore error messages)"
            /bin/umount -avn

            # on umsdos fs this would lead to an error message. so direct
            # errors to /dev/null
            /bin/mount -no remount,ro / 2> /dev/null
            /bin/sync
            /sbin/reboot -f
            ;;
        esac
    fi

    evaluate_retval
}

# ---------------------------------------------------------------------------
# main
# ---------------------------------------------------------------------------
main()
{
    while [ ${#} -gt 0 ]
    do
        case "${1}" in
        -q|--quiet)
            _quiet=true
            shift
            ;;
        *)
            _action=${1}
            shift
            ;;
        esac
    done

    case "${_action}" in
    start)
        start
        ;;
    *)
        usage
        exit 1
        ;;
    esac

    exit 0
}

# ---------------------------------------------------------------------------
# call function main
# ---------------------------------------------------------------------------
main "${@}"

# ---------------------------------------------------------------------------
# end
# ---------------------------------------------------------------------------