diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index d3a416d..0cd49f0 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -167,6 +167,7 @@ inherit ${IMAGE_CLASSES}
 IMAGE_POSTPROCESS_COMMAND ?= ""
 MACHINE_POSTPROCESS_COMMAND ?= ""
 ROOTFS_POSTPROCESS_COMMAND_prepend = "run_intercept_scriptlets; "
+ROOTFS_POSTPROCESS_COMMAND_prepend = "choose_volatile_conf; "
 
 # some default locales
 IMAGE_LINGUAS ?= "de-de fr-fr en-gb"
@@ -185,6 +186,11 @@ do_build[nostamp] = "1"
 # task, so that we have a single fakeroot context for the whole process.
 do_rootfs[umask] = "022"
 
+choose_volatile_conf () {
+        # This task should be overriden by the specific image recipe.
+        # It is used to install the correct conf file for volatile storage
+        # handling to support read-only rootfs.
+}
 
 run_intercept_scriptlets () {
 	if [ -d ${WORKDIR}/intercept_scripts ]; then
@@ -396,6 +402,21 @@ zap_root_password () {
 	mv ${IMAGE_ROOTFS}/etc/passwd.new ${IMAGE_ROOTFS}/etc/passwd
 } 
 
+# A hook function to support read-only-rootfs IMAGE_FEATURES
+read_only_rootfs_hook () {
+	# Tweak the mount option in fstab
+	sed -i '/rootfs/ s/defaults/ro/' ${IMAGE_ROOTFS}/etc/fstab
+	# Change the value of ROOTFS_READ_ONLY in /etc/default/rcS to yes
+	if [ -e ${IMAGE_ROOTFS}/etc/default/rcS ]; then
+		sed -i 's/ROOTFS_READ_ONLY=no/ROOTFS_READ_ONLY=yes/' ${IMAGE_ROOTFS}/etc/default/rcS
+	fi
+	# Run populate-volatile.sh at rootfs time to set up basic files
+	# and directories to support read-only rootfs.
+	if [ -e ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh ]; then
+		${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh
+	fi
+}
+
 # allow openssh accept login with empty password string
 openssh_allow_empty_password () {
 	if [ -e ${IMAGE_ROOTFS}${sysconfdir}/ssh/sshd_config ]; then
@@ -458,11 +479,9 @@ rootfs_trim_schemas () {
 	done
 }
 
-EXPORT_FUNCTIONS zap_root_password remove_init_link do_rootfs make_zimage_symlink_relative set_image_autologin rootfs_update_timestamp rootfs_no_x_startup
+EXPORT_FUNCTIONS zap_root_password remove_init_link do_rootfs make_zimage_symlink_relative set_image_autologin rootfs_update_timestamp rootfs_no_x_startup choose_volatile_conf
 
-do_fetch[noexec] = "1"
-do_unpack[noexec] = "1"
-do_patch[noexec] = "1"
+# do_fetch, do_unpack and do_patch are needed to copy conf files to workdir
 do_configure[noexec] = "1"
 do_compile[noexec] = "1"
 do_install[noexec] = "1"
@@ -472,4 +491,4 @@ do_package_write_ipk[noexec] = "1"
 do_package_write_deb[noexec] = "1"
 do_package_write_rpm[noexec] = "1"
 
-addtask rootfs before do_build
+addtask rootfs before do_build after do_patch