bcm53xx: sysupgrade: check if new kernel fits partition size

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45547 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm53xx/base-files/lib/upgrade/platform.sh
index e53c251..8862954 100644 (file)
--- 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)