From df72339dbe0d4ae72f70773ea4a86c9220cad37b Mon Sep 17 00:00:00 2001
From: Aaron LI <aly@aaronly.me>
Date: Thu, 10 Jan 2019 09:55:18 +0800
Subject: Split out function get_mount_dev()

---
 dfly-update | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'dfly-update')

diff --git a/dfly-update b/dfly-update
index 4b8e11e..8d37772 100755
--- a/dfly-update
+++ b/dfly-update
@@ -121,6 +121,13 @@ error() {
     exit ${ec}
 }
 
+# Get the device mounted at the given directory
+get_mount_dev() {
+    local mntpnt="$1"
+    local dev=$(df | awk '$NF == "'${mntpnt}'" { print $1 }')
+    echo "${dev}"
+}
+
 # Mount the specified system image file
 #
 # mount_image(imgfile, mntpnt)
@@ -130,7 +137,7 @@ mount_image() {
     local mntpnt="$2"
     local dev vn
 
-    dev=$(df | awk '$NF == "'${mntpnt}'" { print $1 }')
+    dev=$(get_mount_dev ${mntpnt})
     [ -z "${dev}" ] ||
         error ${EC_MOUNT} "${dev} already mounted at ${mntpnt}"
 
@@ -146,7 +153,7 @@ mount_image() {
 umount_image() {
     local mntpnt="$1"
     local dev vn
-    dev=$(df | awk '$NF == "'${mntpnt}'" { print $1 }')
+    dev=$(get_mount_dev ${mntpnt})
     vn=${dev#/dev/}
     umount ${mntpnt} || exit ${EC_UMOUNT}
     echo "Unconfigure ${vn} ..."
-- 
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