image.bbclass: tweak the key location for dropbear when rootfs is readonly

In the same way it's done for openssh.

(From OE-Core rev: a4b91f5199dd4d1302484cbd972a484d36f7886f)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 9fbdce583c..d2f8105f13 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -251,6 +251,17 @@ read_only_rootfs_hook () {
                         echo "SSHD_OPTS='-f /etc/ssh/sshd_config_readonly'" >> ${IMAGE_ROOTFS}/etc/default/ssh
                 fi
         fi
+
+        # Also tweak the key location for dropbear in the same way.
+        if [ -d ${IMAGE_ROOTFS}/etc/dropbear ]; then
+                if [ -e ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key ]; then
+                        echo "DROPBEAR_RSAKEY_DIR=/etc/dropbear" >> ${IMAGE_ROOTFS}/etc/default/dropbear
+                else
+                        echo "DROPBEAR_RSAKEY_DIR=/var/lib/dropbear" >> ${IMAGE_ROOTFS}/etc/default/dropbear
+                fi
+        fi
+
+
         if ${@bb.utils.contains("DISTRO_FEATURES", "sysvinit", "true", "false", d)}; then
                 # Change the value of ROOTFS_READ_ONLY in /etc/default/rcS to yes
                 if [ -e ${IMAGE_ROOTFS}/etc/default/rcS ]; then