From 45181956169200c7434b10f73de7f35f584f6966 Mon Sep 17 00:00:00 2001
From: Christopher Roy Bratusek <nano@jpberlin.de>
Date: Wed, 3 Mar 2021 20:58:47 +0100
Subject: [PATCH] abort when we can't detect block devices

---
 CommonInstaller | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CommonInstaller b/CommonInstaller
index 2e5e32d9..fb5bda2b 100644
--- a/CommonInstaller
+++ b/CommonInstaller
@@ -283,6 +283,8 @@ mount_partitions () {
 		SYSTEM_BLOCK=$(find_block system)
 		decho " INFO: #5 [SYSTEM_BLOCK] ${SYSTEM_BLOCK}"
 
+		[ -z "${SYSTEM_BLOCK}" ] && error "failed to detect block device for /system"
+
 		if is_mounted /system_root; then
 			umount /system 2&>/dev/null
 			umount /system_root 2&>/dev/null
@@ -307,6 +309,8 @@ mount_partitions () {
 		VENDOR_BLOCK=$(find_block vendor)
 		decho " INFO: #7 [VENDOR_BLOCK] ${VENDOR_BLOCK}"
 
+		[ -z "${VENDOR_BLOCK}" ] && error "failed to detect block device for /vendor"
+
 		! is_mounted /vendor && mount -o ro /vendor
 		! is_mounted /vendor && mount -o ro ${VENDOR_BLOCK} /vendor