#!/bin/sh

msg () { [ "${quiet}" != "y" ] && echo $@; }
err () { echo "ERROR: $@"; }

msg ":: Loading Initramfs"

echo mounting
/bin/mount -t sysfs none /sys
/bin/mount -t proc  none /proc

echo reading cmdline
read CMDLINE </proc/cmdline
export CMDLINE

# Used so hooks can override params to kinit
echo modprobe
export kinit_params=""
export root=""
echo "/sbin/modprobe" > /proc/sys/kernel/modprobe

echo "CMDLINE=${CMDLINE}"
for cmd in ${CMDLINE}; do
    echo "cmd=${cmd}"
    case "${cmd}" in
        \#*) break ;; # ignore everything after a # in the commandline
        [0123456Ss]) export runlevel="${cmd}" ;;
        single) export runlevel="S" ;; #some people use 'single'
        #Allow "init=X" to pass-through
        init=*) kinit_params="${kinit_params} ${cmd}" ;;
        # only export stuff that does work with dash :)
        *=*) cmd="$(replace -s= "${cmd}" '.' '_')"
             cmd="$(replace -s= "${cmd}" '-' '_')"
             export "${cmd}"
             ;;
        *)   cmd="$(replace "${cmd}" '.' '_')"
             cmd="$(replace "${cmd}" '-' '_')"
             export "${cmd}=y" 
           ;;
    esac
done

if [ -n "${disablehooks}" ]; then
    for d in $(replace "${disablehooks}" ','); do
        export "hook_${d}=disabled"
    done
fi

if [ -n "${disablemodules}" ]; then
    for d in $(replace "${disablemodules}" ','); do
        export "mod_${d}=disabled"
    done
fi

if [ -n "${earlymodules}" ]; then
    for m in $(replace "${earlymodules}" ','); do
        /sbin/modprobe -q ${m} > /dev/null 2>&1
    done
fi

. /config

for m in ${MODULES}; do
    TST=""
    eval "TST=\$mod_${m}"
    if [ "${TST}" != "disabled" ]; then
        /sbin/modprobe -q ${m} > /dev/null 2>&1
    fi
done

if [ -e "/hooks" ]; then
    for h in ${HOOKS}; do
        TST=""
        eval "TST=\$hook_${h}"
        if [ "${TST}" != "disabled" ]; then
            run_hook () { msg "${h}: no run function defined"; }
            if [ -e "/hooks/${h}" ]; then
               . /hooks/${h}
               msg ":: Running Hook [${h}]"
               run_hook
            fi
        fi
    done
fi

if [ "${rootdelay}" != "0" ]; then
    msg -n "Waiting for devices to settle..."
    /bin/sleep "${rootdelay}"
    export rootdelay=0
    export kinit_params="$kinit_params rootdelay=0"
    msg "done."
fi

if [ "${break}" = "y" ]; then
    echo ":: Break requested, type 'exit' to resume operation"
    echo "   NOTE: klibc contains no 'ls' binary, use 'echo *' instead"
    PS1="ramfs$ " /bin/sh -i
fi

if [ ! -b "${root}" ]; then
    # This duplicates code from the filesystem hook
    # without this, mkinitcpio would fail for users who use
    # neither the udev hook, nor the filesystem hook
    msg "\nRoot device '${root}' doesn't exist, attempting to create it"

    eval $(/bin/parseblock "${root}")
    if [ "${BLOCKNAME}" = "unknown" ]; then
        echo "ERROR: Failed to parse block device name for '${root}'"
    elif [ -z "${BLOCKDEVICE}" ]; then
        echo "ERROR: Failed to parse block device ids for '${root}'"
    else
        export root="${BLOCKNAME}"
        echo "/bin/mknod \"${BLOCKNAME}\" b ${BLOCKDEVICE}"
        /bin/mknod "${BLOCKNAME}" b ${BLOCKDEVICE} >/dev/null
    fi
    if [ ! -b "${root}" ]; then
        err "Unable to create/detect root device '${root}'"
        echo "Dropping to a recovery shell... type 'exit' to reboot"
        echo "NOTE: klibc contains no 'ls' binary, use 'echo *' instead"
        echo ""
        echo "If the device '${root}' gets created while you are here,"
        echo "try adding 'rootdelay=8' or higher to the kernel command-line"
        PS1="ramfs$ " /bin/sh -i
        msg "Rebooting..."
        /bin/reboot
        fi
fi

msg ":: Initramfs Completed - control passing to kinit"
if [ -f "/message" ]; then
    msg "$(cat /message)"
fi

#Special handling if udev is running
udevpid=$(/bin/minips -C udevd -o pid=)
if [ -n "${udevpid}" ]; then
    /bin/kill -9 ${udevpid}
    /bin/sleep 0.01
fi


exec /bin/kinit -- "root=${root}" ${kinit_params} "${runlevel}" > /dev/null 2>&1