From: Rodrigo Balerdi <lanchon@gmail.com>
Date: Fri, 15 Apr 2022 10:20:28 +0000 (-0300)
Subject: base-files: minimize critical time in sysupgrade
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9ba28f978c76692876f4f5bc7ad66e8fc73084fb;p=openwrt%2Fstaging%2Fnbd.git

base-files: minimize critical time in sysupgrade

Attempt to minimize the time during which an interrupted nand sysupgrade
can lead to a non-functional device by flushing caches before starting
the upgrade procedure.

Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
---

diff --git a/package/base-files/files/lib/upgrade/nand.sh b/package/base-files/files/lib/upgrade/nand.sh
index 371bdf7d77..5ecdb0ff23 100644
--- a/package/base-files/files/lib/upgrade/nand.sh
+++ b/package/base-files/files/lib/upgrade/nand.sh
@@ -335,15 +335,16 @@ nand_upgrade_tar() {
 
 # Recognize type of passed file and start the upgrade process
 nand_do_upgrade() {
-	local file_type=$(identify $1)
+	local file_type=$(identify "$1")
 
 	[ ! "$(find_mtd_index "$CI_UBIPART")" ] && CI_UBIPART=rootfs
 
+	sync
 	case "$file_type" in
-		"fit")		nand_upgrade_fit $1;;
-		"ubi")		nand_upgrade_ubinized $1;;
-		"ubifs")	nand_upgrade_ubifs $1;;
-		*)		nand_upgrade_tar $1;;
+		"fit")		nand_upgrade_fit "$1";;
+		"ubi")		nand_upgrade_ubinized "$1";;
+		"ubifs")	nand_upgrade_ubifs "$1";;
+		*)		nand_upgrade_tar "$1";;
 	esac
 }