#! /bin/sh

KEXEC=/sbin/kexec

standard_kexec_args="-p"

KDUMP_FILE_LOAD=""

EARLY_KDUMP_INITRD=""

EARLY_KDUMP_KERNEL=""

EARLY_KDUMP_CMDLINE=""

EARLY_KDUMP_KERNELVER=""

EARLY_KEXEC_ARGS=""

. /etc/sysconfig/kdump

. /lib/dracut-lib.sh

. /lib/kdump-lib.sh

prepare_parameters()

{

    EARLY_KDUMP_CMDLINE=$(prepare_cmdline "${KDUMP_COMMANDLINE}" "${KDUMP_COMMANDLINE_REMOVE}" "${KDUMP_COMMANDLINE_APPEND}")

    KDUMP_BOOTDIR=$(check_boot_dir "${KDUMP_BOOTDIR}")

    EARLY_KDUMP_KERNEL="${KDUMP_BOOTDIR}/${KDUMP_IMG}-earlykdump${KDUMP_IMG_EXT}"

    EARLY_KDUMP_INITRD="${KDUMP_BOOTDIR}/initramfs-earlykdump.img"

}

early_kdump_load()

{

    check_kdump_feasibility

    if [ $? -ne 0 ]; then

        return 1

    fi

    if is_fadump_capable; then

        echo "WARNING: early kdump doesn't support fadump."

        return 1

    fi

    check_current_kdump_status

    if [ $? == 0 ]; then

        return 1

    fi

    prepare_parameters

    EARLY_KEXEC_ARGS=$(prepare_kexec_args "${KEXEC_ARGS}")

    if [ "$KDUMP_FILE_LOAD" == "on" ]; then

        echo "Using kexec file based syscall."

        EARLY_KEXEC_ARGS="$EARLY_KEXEC_ARGS -s"

    fi

    $KEXEC ${EARLY_KEXEC_ARGS} $standard_kexec_args \

        --command-line="$EARLY_KDUMP_CMDLINE" \

        --initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL

    if [ $? == 0 ]; then

        echo "kexec: loaded early-kdump kernel"

        return 0

    else

        echo "kexec: failed to load early-kdump kernel"

        return 1

    fi

}

set_early_kdump()

{

    if getargbool 0 rd.earlykdump; then

        echo "early-kdump is enabled."

        early_kdump_load

    else

        echo "early-kdump is disabled."

    fi

    return 0

}

set_early_kdump