From 1c2259d7e65ba35318c72bbbffa4bb371a2bba02 Mon Sep 17 00:00:00 2001
From: Dmitri Popov <dmpop@linux.com>
Date: Fri, 26 Jan 2018 14:38:31 +0100
Subject: [PATCH] Add NFS mount and backup

---
 backup.sh | 44 +++++++++++++++++++++++++++++++-------------
 1 file changed, 31 insertions(+), 13 deletions(-)

diff --git a/backup.sh b/backup.sh
index 2430f13..b903b35 100755
--- a/backup.sh
+++ b/backup.sh
@@ -10,11 +10,33 @@ STORAGE_MOUNT_POINT="/media/storage"
 CARD_DEV="sdb1"
 CARD_MOUNT_POINT="/media/card"
 
+# If there is a wpa_supplicant.conf file in the root of the storage device
+# Rename the original config file,
+# move wpa_supplicant.conf from the card to /etc/wpa_supplicant/
+# Reboot to enable networking
+if [ -f "$STORAGE_MOUNT_POINT/wpa_supplicant.conf" ]; then
+    sudo sh -c "echo 100 > /sys/class/leds/led0/delay_on"
+    mv /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.bak
+    mv "$STORAGE_MOUNT_POINT/wpa_supplicant.conf" /etc/wpa_supplicant/wpa_supplicant.conf
+    reboot
+fi
+
+# If there is a nfs_mount file in the root of the storage device
+# Read the mount command and mount an NFS export
+if [ -f "$STORAGE_MOUNT_POINT/nfs_mount" ]; then
+    sudo sh -c "echo 100 > /sys/class/leds/led0/delay_on"
+    NFS_COMMAND=$(head -n 1 "$STORAGE_MOUNT_POINT/nfs_mount")
+    sudo $NFS_COMMAND
+    NFS_MOUNT_POINT=`echo "$NFS_COMMAND" cut -d" " -f5`
+else
+    NFS_MOUNT_POINT=""
+fi
+
 # Set the ACT LED to heartbeat
 sudo sh -c "echo heartbeat > /sys/class/leds/led0/trigger"
 
-# Shutdown after 7 minutes if no device is connected.
-sudo shutdown -h 7 "Shutdown is activated. To cancel: sudo shutdown -c"
+# Shutdown after 5 minutes if no device is connected.
+sudo shutdown -h 5 "Shutdown is activated. To cancel: sudo shutdown -c"
 
 # Wait for a USB storage device (e.g., a USB flash drive)
 STORAGE=$(ls /dev/* | grep $STORAGE_DEV | cut -d"/" -f3)
@@ -34,17 +56,6 @@ sudo shutdown -c
 sudo sh -c "echo timer > /sys/class/leds/led0/trigger"
 sudo sh -c "echo 1000 > /sys/class/leds/led0/delay_on"
 
-# If there is a wpa_supplicant.conf file in the root of the storage device
-# Rename the original config file,
-# move wpa_supplicant.conf from the card to /etc/wpa_supplicant/
-# Reboot to enable networking
-if [ -f "$STORAGE_MOUNT_POINT/wpa_supplicant.conf" ]; then
-    sudo sh -c "echo 100 > /sys/class/leds/led0/delay_on"
-    mv /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.bak
-    mv "$STORAGE_MOUNT_POINT/wpa_supplicant.conf" /etc/wpa_supplicant/wpa_supplicant.conf
-    reboot
-fi
-
 # Wait for a card reader or a camera
 CARD_READER=$(ls /dev/* | grep $CARD_DEV | cut -d"/" -f3)
 until [ ! -z $CARD_READER ]
@@ -75,6 +86,13 @@ sudo lsblk > lsblk.log
   
 # Perform backup using rsync
 rsync -av --exclude "*.id" $CARD_MOUNT_POINT/ $BACKUP_PATH
+
+# If an NFS export is mounted
+# Back up files to it
+if [ ! -z "$NFS_MOUNT_POINT" ]; then
+  rsync -av --exclude "*.id" $BACKUP_PATH/ $NFS_MOUNT_POINT
+fi
+
 # Turn off the ACT LED to indicate that the backup is completed
 sudo sh -c "echo 0 > /sys/class/leds/led0/brightness"
 fi