#!/bin/sh
#
# This is one of those types of files that you shouldn't edit unless you really
# know what you are doing and even then you should make a backup.
#
# Edit at your own risk! DANGER DANGER.


if [ -f "/warewulf/config" ]; then
    . /warewulf/config
else
    echo "ERROR: Warewulf configuration file not found... rebooting in 1 minute"
    sleep 60
    echo b > /proc/sysrq-trigger || /sbin/reboot
fi

echo "Warewulf v4 is now booting: ${WWHOSTNAME}"
echo

echo "Mounting up kernel file systems"
mkdir /proc /dev /sys /run 2>/dev/null
mount -t proc proc /proc
mount -t devtmpfs devtmpfs /dev
mount -t sysfs sysfs /sys
mount -t tmpfs tmpfs /run

chmod 755 /warewulf/wwinit

echo -n "Checking Rootfs type..."
ROOTFSTYPE=`stat -f -c "%T" /`
echo "${ROOTFSTYPE}"


if [ "${WWROOT}" != "${ROOTFSTYPE}" ]; then
    echo "Requested rootfs type does not match current rootfs type. Pivoting to new rootfs..."
    if [ "${WWROOT}" == "ramfs" ] || [ "${WWROOT}" == "tmpfs" ]; then
        mkdir /newroot
        mount wwroot /newroot -t ${WWROOT} -o mpol=interleave
        tar cf - --exclude ./proc --exclude ./sys --exclude ./dev --exclude ./run --exclude ./newroot . | tar xf - -C /newroot
        mkdir /newroot/proc /newroot/dev /newroot/sys /newroot/run 2>/dev/null
        echo "Switching to new rootfs and invoking /warewulf/wwinit..."
        exec /sbin/switch_root /newroot /warewulf/wwinit
    elif [ "${WWROOT}" == "initramfs" ]; then
        echo ">>> Deprecated option \"initramfs\" chosen."
        echo ">>> The 'initramfs' can be either a ramfs or a tmpfs natively, depending on kernel configuration."
        echo ">>> If you wish to use whatever this kernel chooses by default, remove this 'root' setting from your nodes/profiles."
        echo "Invoking /warewulf/wwinit..."
        exec /warewulf/wwinit
    else
        echo "Unrecognized rootfs type requested: ${WWROOT}"
        echo "Rebooting in 1 minute..."
        sleep 60
        /sbin/reboot -f
    fi
else
    echo "Invoking /warewulf/wwinit..."
    exec /warewulf/wwinit
fi

echo
echo "There was a problem with the initial provisioning process, rebooting in 1 minute..."
sleep 60
echo b > /proc/sysrq-trigger || /sbin/reboot -f