rootfs-postcommands.bbclass: add inittab tweak to read_only_rootfs_hook()

It's not clear that we actually need to call mount -o remount,XX from
the busybox-inittab inittab at all, but as we currently do, let's
respect read-only-rootfs in IMAGE_FEATURES and not remount / as rw.

(From OE-Core rev: 8840a831d47a94f36bb2e173164dbaf9b955e809)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index 6cec23ef1a..fc338161c4 100644
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -95,6 +95,11 @@ read_only_rootfs_hook () {
                 sed -i -e '/^[#[:space:]]*\/dev\/root/{s/defaults/ro/;s/\([[:space:]]*[[:digit:]]\)\([[:space:]]*\)[[:digit:]]$/\1\20/}' ${IMAGE_ROOTFS}/etc/fstab
         fi
 
+        # Tweak the "mount -o remount,rw /" command in busybox-inittab inittab
+        if [ -f ${IMAGE_ROOTFS}/etc/inittab ]; then
+                sed -i 's|/bin/mount -o remount,rw /|/bin/mount -o remount,ro /|' ${IMAGE_ROOTFS}/etc/inittab
+        fi
+
         # If we're using openssh and the /etc/ssh directory has no pre-generated keys,
         # we should configure openssh to use the configuration file /etc/ssh/sshd_config_readonly
         # and the keys under /var/run/ssh.