Update Xen info from an OpenBSD guest

xe-update-stats.sh

#!/bin/sh
#
# add to /etc/rc.local
# [ -x /usr/local/bin/xe-update-stats ] && /usr/local/bin/xe-update-stats init

# add to `crontab -e`
# 1-59    *       *       *       *       /bin/sh /usr/local/bin/xe-update-stats

if [ "$1" = "init" ]; then

  ostype=$(sysctl -n kern.ostype)
  osrelease=$(sysctl -n kern.osrelease)

  # XenServer Tools version
  hostctl attr/PVAddons/MajorVersion 6
  hostctl attr/PVAddons/MinorVersion 2
  hostctl attr/PVAddons/MicroVersion 0
  hostctl attr/PVAddons/BuildVersion 76888
  hostctl attr/PVAddons/Installed 1

  for ifline in $(dmesg | grep address | sed -E -e 's/^(xnf.+)\ at.*address\ ([a-fA-F0-9:]+)/\1=\2/' | sort); do
    mac=$(echo $ifline | cut -d= -f2)
    if=$(echo $ifline | cut -d= -f1)
    for vif in $(hostctl device/vif); do
      if [ "$mac" = "$(hostctl device/vif/$vif/mac)" ]; then
        ip4=$(ifconfig $if | grep 'inet[^6]' | cut -d ' ' -f2)
        ip6=$(ifconfig $if | grep 'inet6' | cut -d ' ' -f2 | cut -d% -f1)
        if [ -n "$ip4" ]; then
          hostctl attr/eth$vif/ip "$ip4"
        fi
        if [ -n "$ip6" ]; then
          hostctl attr/eth$vif/ipv6/0/addr "$ip6"
        fi
      fi
    done
  done

  # OS version
  hostctl data/os_name "$ostype $osrelease"
  hostctl data/os_uname $osrelease
  hostctl data/os_distro $ostype
  hostctl data/os_majorver $(echo $osrelease | sed -e 's/\..*$//')
  hostctl data/os_minorver $(echo $osrelease | sed -e 's/^.*\.//')

  # Update XenStore
  hostctl data/updated 1

fi

hostctl data/meminfo_total $(vmstat -s | awk -v pagesize=`/sbin/sysctl -n hw.pagesize` '/pages managed$/ { print $1 * pagesize / 1024 }')

hostctl data/meminfo_free $(vmstat -s | awk -v pagesize=`/sbin/sysctl -n hw.pagesize` '/pages free$/ { print $1 * pagesize / 1024 }')