From: Rafał Miłecki <zajec5@gmail.com>
Date: Tue, 21 Apr 2015 11:21:34 +0000 (+0000)
Subject: bcm53xx: sysupgrade: check if new kernel fits partition size
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=866fe3895da77b96999c77bbb7d23737fd93d34e;p=openwrt%2Fstaging%2Fluka.git

bcm53xx: sysupgrade: check if new kernel fits partition size

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45547
---

diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index e53c2513d2..88629549dc 100644
--- a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
@@ -152,12 +152,17 @@ platform_pre_upgrade() {
 		echo "Unable to find \"linux\" partition size"
 		exit 1
 	}
-	linux_length=$((0x$linux_length + 28))
+	linux_length=$((0x$linux_length))
+	local kernel_length=$(wc -c $dir/kernel | cut -d ' ' -f 1)
+	[ $kernel_length -gt $linux_length ] && {
+		echo "New kernel doesn't fit \"linux\" partition."
+		return
+	}
 	rm -f /tmp/null.bin
 	rm -f /tmp/kernel.trx
 	touch /tmp/null.bin
 	otrx create /tmp/kernel.trx \
-		-f $dir/kernel -b $linux_length \
+		-f $dir/kernel -b $(($linux_length + 28)) \
 		-f /tmp/null.bin
 
 	# Prepare UBI image (drop unwanted extra blocks)