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#!/usr/bin/bash

COMMAND="$1"
KERNEL_VERSION="$2"
KDUMP_INITRD_DIR_ABS="$3"
KERNEL_IMAGE="$4"

if ! [[ ${KERNEL_INSTALL_MACHINE_ID-x} ]]; then
    exit 0
fi

if [[ -d "$KDUMP_INITRD_DIR_ABS" ]]; then
    KDUMP_INITRD="initrdkdump"
else
    # If `KDUMP_BOOTDIR` is not writable, then the kdump
    # initrd must have been placed at `/var/lib/kdump`
    if [[ ! -w "/boot" ]]; then
        KDUMP_INITRD_DIR_ABS="/var/lib/kdump"
    else
        KDUMP_INITRD_DIR_ABS="/boot"
    fi
    KDUMP_INITRD="initramfs-${KERNEL_VERSION}kdump.img"
fi

ret=0
case "$COMMAND" in
    add)
        # Do nothing, kdump initramfs is strictly host only
        # and managed by kdump service
        ;;
    remove)
        rm -f -- "$KDUMP_INITRD_DIR_ABS/$KDUMP_INITRD"
        ret=$?
        ;;
esac
exit $ret