[x86] sysupgrade: Get target device from kernel cmdline, patch from acinonyx

[openwrt.git] / target / linux / x86 / base-files / lib / upgrade / platform.sh

diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
index 9871e62..d765c5e 100644 (file)
--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
+++ b/target/linux/x86/base-files/lib/upgrade/platform.sh
@@ -13,8 +13,12 @@ platform_check_image() {
 }
 
 platform_do_upgrade() {
+       local ROOTFS
        sync
-       get_image "$1" > /dev/sda
+       grep -q -e "jffs2" -e "squashfs" /proc/cmdline \
+               && ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "block2mtd.block2mtd") { print substr($2,1,index($2, ",")-1) }' < /proc/cmdline)" \
+               || ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "root") { print $2 ) }' < /proc/cmdline)"
+       [ -b ${ROOTFS%[0-9]} ] && get_image "$1" > ${ROOTFS%[0-9]}
 }
 
 x86_prepare_ext2() {