From 04b8c7423ed0249a028dff1c245f4c90a88b6ea4 Mon Sep 17 00:00:00 2001
From: Eric Gillespie <epg@google.com>
Date: Fri, 5 Dec 2014 16:23:02 -0800
Subject: [PATCH] only supporting fcntl lock, so bail out if mh doesn't use
 that

---
 minc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/minc b/minc
index be32d8f..2f3820e 100755
--- a/minc
+++ b/minc
@@ -194,6 +194,15 @@ if (!$mh) {
 
 $ENV{"MHCONTEXT"} = $mh . '/.minc.context';
 
+# TODO: Support dot-locking too.  This works on FreeBSD and Linux.
+my $locking = `mhparam datalocking`;
+$? < 0 && die;
+$? == 0 || die('mhparam datalocking: ' . exit_msg($?));
+chomp($locking);
+if ($locking ne 'fcntl') {
+    die("mh locking $locking not supported; only fcntl");
+}
+
 
 ###############################################################################
 # Utility procedures
-- 
2.56.0