From 305b08b544c6bf3271e373365a70fe5b73404725 Mon Sep 17 00:00:00 2001
From: Milan Meduna <milan@my-web.xyz>
Date: Thu, 17 Sep 2020 10:49:26 +0200
Subject: [PATCH] add way to change lock file for flock using second parameter

---
 zfs-backup-mm | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/zfs-backup-mm b/zfs-backup-mm
index c292461..afe2176 100755
--- a/zfs-backup-mm
+++ b/zfs-backup-mm
@@ -1,6 +1,13 @@
 #!/bin/bash
+if [ -z "$2" ]
+then
+lock_variable="/var/lock/zfs-backup-mm"
+else
+lock_variable="$2"
+fi
+
 (
-     flock -n 200 || { echo 'locked via flock on file /var/lock/zfs-backup-mm' ; exit 1; }
+     flock -n 200 || { echo "locked via flock on file $lock_variable" ; exit 1; }
 
 zfsnap_block () {
 
@@ -83,4 +90,5 @@ if [[ $# -eq 0 ]] ; then
 fi
 	source $1
 	zfsnap_block
-) 200>/var/lock/zfs-backup-mm
+) 200>$lock_variable
+