#!/bin/sh

[ -x /usr/sbin/nvme ] || exit

case $ACTION in
  add|"")
    BASE=$(echo $MDEV | sed -re 's/^(nvme[0-9]+n[0-9]+).*/\1/')
    PART=$(echo $MDEV | sed -re 's/nvme[0-9]+n[0-9]+p?//g')
    until [ -n "$EBS" ]; do
      EBS=$(/usr/sbin/nvme id-ctrl "/dev/$BASE" -b 2>/dev/null | dd bs=32 skip=96 count=1 2>/dev/null | tr -d ' ')
    done
    EBS=${EBS#/dev/}$PART
    ln -sf "$MDEV" "${EBS/xvd/sd}"
    ln -sf "$MDEV" "${EBS/sd/xvd}"
    ;;
  remove)
    for TARGET in sd* xvd*
    do
      [ "$(readlink $TARGET 2>/dev/null)" = "$MDEV" ] && rm -f "$TARGET"
    done
    ;;
esac