From 5c8e152837058ce9ffd65864972ef4e7e03f7b9a Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Sun, 25 May 2025 08:46:15 +0200
Subject: [PATCH] add mount logic

---
 backupmount | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/backupmount b/backupmount
index a175437..8b0b7bf 100755
--- a/backupmount
+++ b/backupmount
@@ -21,10 +21,33 @@ infolog()
 
 device_mount()
 {
-	local device="$1"
+	local media="$1"
+	local device="$2"
+
 	[ -b "$device" ] \
 		|| infolog "block device $device not found" \
 		|| return $?
+
+	infolog "media $media with device $device found"
+
+	local key=$(cat "config.yaml" \
+		| yq --raw-output ".media.\"$media\".key")
+	[ "$key" != "null" ] \
+		|| errlog "config.yaml key for $media missing" \
+		|| return $?
+	infolog "use key $key"
+	local volume=$(cat "config.yaml" \
+		| yq --raw-output ".media.\"$media\".volume")
+	[ "$volume" != "null" ] \
+		|| errlog "config.yaml volume for $media missing" \
+		|| return $?
+	infolog "volume mount $volume"
+
+	cryptsetup open --key-file "$key" \
+		"$device" \
+		"$volume" \
+		|| errlog "could not open $device with $key"
+		|| return $?
 }
 
 mount()
@@ -44,10 +67,10 @@ mount()
 		[ "$device" != "null" ] \
 			|| errlog "missing path for $media" \
 			|| return $?
-		device_mount "$device" && return 0
+		device_mount "$media" "$device" && return 0
 	done
 
-	errlog "no device found"
+	errlog "no device was mounted"
 }
 
 main()
-- 
2.47.3