From a4f0ddecb70b81d9327211c1023a5e021f13c815 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Sun, 17 Jul 2016 05:08:25 +0200
Subject: [PATCH] udev-block-add-change: fix checking if partition is mounted

is_used() function should operate on its argument, not global $DEVNAME.

(cherry picked from commit e0acdee23c5809e99d5053f1e979f9e35f98837f)
---
 udev/udev-block-add-change | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/udev/udev-block-add-change b/udev/udev-block-add-change
index 53c8006..30cafcd 100755
--- a/udev/udev-block-add-change
+++ b/udev/udev-block-add-change
@@ -24,8 +24,9 @@ xs_remove() {
 
 is_used() {
     local sys_devpath=$1
+    local devname=$(grep ^DEVNAME= $sys_devpath/uevent | cut -f 2 -d =)
     # mounted; or enabled swap
-    if lsblk -dnr -o MOUNTPOINT "$DEVNAME" | grep -q .; then
+    if lsblk -dnr -o MOUNTPOINT "/dev/$devname" | grep -q .; then
         return 0
     fi
     # part of other device-mapper