From ce5ccb3b48911c95b632011719948d5ed5b1ffa5 Mon Sep 17 00:00:00 2001
From: Emily Frost <emfrost@posteo.net>
Date: Fri, 19 Jul 2019 19:33:30 -0500
Subject: [PATCH] Added galaxy-s5-backup and fix-fileshare-permissions.

---
 fix-fileshare-permissions |  8 ++++++++
 galaxy-s5-backup.sh       | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100755 fix-fileshare-permissions
 create mode 100755 galaxy-s5-backup.sh

diff --git a/fix-fileshare-permissions b/fix-fileshare-permissions
new file mode 100755
index 0000000..993e9b9
--- /dev/null
+++ b/fix-fileshare-permissions
@@ -0,0 +1,8 @@
+#!/usr/bash
+
+test_dir='/media/hoard-disk/ebooks'
+
+sudo chown root:root "$test_dir"
+sudo chmod 600 "$test_dir"
+sudo setfacl -Rm 'group:fileshare:r-x' "$test_dir"
+sudo setfacl -Rm 'group:fileshare-admin:rwx' "$test_dir"
diff --git a/galaxy-s5-backup.sh b/galaxy-s5-backup.sh
new file mode 100755
index 0000000..46784e8
--- /dev/null
+++ b/galaxy-s5-backup.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+PARTITION_DIRECTORY="/dev/block/platform/msm_sdcc.1/by-name"
+
+current_date="$(date +%Y%m%d)"
+
+function backup_partition {
+    partition_path="$1"
+    partition_name="$(basename "${partition_path}")"
+    echo "Backing up partition ${partition_name}."
+
+    backup_image_name="${partition_name}-${current_date}.img"
+    echo "Copying partition."
+    adb shell "base64 < \"${partition_path}\"" | base64 -di > "$backup_image_name"
+
+    echo "Hashing backup image."
+    sha256sum "$backup_image_name" > "${backup_image_name}.SHA256SUM"
+    backup_hash=$(cut -d ' ' -f 1 < "${backup_image_name}.SHA256SUM")
+
+    echo "Hashing original image."
+    original_hash=$(adb shell "sha256sum ${partition_path}" | cut -d ' ' -f 1)
+
+    if [ "$original_hash" = "$backup_hash" ]; then
+        echo "Backup successful."
+    else
+        echo "Backup of partition ${partition_name} failed."
+    fi
+}
+
+# Technically this is a bit fragile, but the partition names don't break it and aren't going
+# to change anytime soon and this is much easier to read than the super safe solution.
+for partition_path in $(find "${PARTITION_DIRECTORY}"); do
+    backup_partition "$partition_path"
+done