From 7f642f5659550a9b73a4381976d359d45218cbc7 Mon Sep 17 00:00:00 2001
From: Matt Churchyard <churchers@gmail.com>
Date: Fri, 16 Oct 2015 09:08:47 +0100
Subject: [PATCH] Add some basic version checking

---
 lib/vm-core | 5 +++++
 vm          | 1 +
 2 files changed, 6 insertions(+)

diff --git a/lib/vm-core b/lib/vm-core
index 741e8a45..43a175d1 100644
--- a/lib/vm-core
+++ b/lib/vm-core
@@ -260,6 +260,11 @@ __vm_run(){
 
 	# if uefi, make sure we have bootrom, then update options for uefi support
 	if [ -n "${_uefi}" ]; then
+		if [ `uname -K` -lt 1100000 ]; then
+			__log "guest" "${_name}" "uefi guests can only be run on FreeBSD 11 or newer"
+			exit 15
+		fi
+
 		if [ "${_uefi}" = "csm" ]; then
 			if [ ! -e "${vm_dir}/.config/BHYVE_UEFI_CSM.fd" ]; then
 				__log "guest" "${_name}" "please download uefi csm firmware to ${vm_dir}/.config/BHYVE_UEFI_CSM.fd"
diff --git a/vm b/vm
index a2d8cd48..8fe6edb3 100644
--- a/vm
+++ b/vm
@@ -52,6 +52,7 @@ fi
 
 # check environment
 [ `id -u` -ne 0 ] && __err "virtual machines can only be managed by root"
+[ `uname -K` -lt 1000000 ] && __err "please upgrade to FreeBSD 10 or newer for bhyve support"
 
 # we should be enabled in rc.conf
 if ! checkyesno vm_enable; then