disable squashfs auto-clean for non-broadcom stuff

[openwrt.git] / openwrt / package / base-files / default / sbin / mount_root

diff --git a/openwrt/package/base-files/default/sbin/mount_root b/openwrt/package/base-files/default/sbin/mount_root
index ae78ee4..c393e06 100755 (executable)
--- a/openwrt/package/base-files/default/sbin/mount_root
+++ b/openwrt/package/base-files/default/sbin/mount_root
@@ -1,5 +1,11 @@
 #!/bin/sh
 . /etc/nvram.sh
 #!/bin/sh
 . /etc/nvram.sh

+is_clean() {
+       grep Broadcom /proc/cpuinfo 2>&- >&- || return 0
+       OFFSET="$((0x$(dd if=/dev/mtdblock/1 bs=1 skip=$((0x14)) count=2 2>&- | hexdump | grep 0000000 | cut -d ' ' -f 2) - 1))"
+       dd if=/dev/mtdblock/1 bs=1 skip=$OFFSET count=1 2>&- | hexdump -v | grep ' 0000' > /dev/null && return 255 || return 0
+}
+

 if [ "$1" != "failsafe" ]; then 
        mount | grep jffs2 >&-
        if [ $? = 0 ] ; then
 if [ "$1" != "failsafe" ]; then 
        mount | grep jffs2 >&-
        if [ $? = 0 ] ; then


@@ -14,6 +20,10 @@ if [ "$1" != "failsafe" ]; then
                fi
        else
                if [ -z "$(nvram get no_root_swap)" ]; then
                fi
        else
                if [ -z "$(nvram get no_root_swap)" ]; then

+                       is_clean || {
+                               mtd erase OpenWrt
+                               jffs2root --clean
+                       }

                        mtd unlock OpenWrt
                        mount -t jffs2 /dev/mtdblock/4 /jffs
                        pivot_root /jffs /jffs/rom
                        mtd unlock OpenWrt
                        mount -t jffs2 /dev/mtdblock/4 /jffs
                        pivot_root /jffs /jffs/rom