[OE-core] [PATCH 6/7] rootfs-postcommands: call preset-all for read-only-rootfs

[Jonas Bonn]

When the rootfs is read-only, we cannot rely on systemd's default
invocation of preset-all at runtime in order to enable services.  As
such, we need to do it at image creation time.
---
 meta/classes/rootfs-postcommands.bbclass | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index 89f8efd323..5fcd53c4ca 100644
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -16,6 +16,7 @@ ROOTFS_POSTPROCESS_COMMAND += "rootfs_update_timestamp ; "
 
 # Tweak the mount options for rootfs in /etc/fstab if read-only-rootfs is enabled
 ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", "read_only_rootfs_hook; ", "",d)}'
+IMAGE_EXTRADEPENDS += '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", "systemd-systemctl-native", "", d)}'
 
 # We also need to do the same for the kernel boot parameters,
 # otherwise kernel or initramfs end up mounting the rootfs read/write
@@ -131,6 +132,7 @@ read_only_rootfs_hook () {
 	# Create machine-id
 	# 20:12 < mezcalero> koen: you have three options: a) run systemd-machine-id-setup at install time, b) have / read-only and an empty file there (for stateless) and c) boot with / writable
 		touch ${IMAGE_ROOTFS}${sysconfdir}/machine-id
+		systemctl --root=${IMAGE_ROOTFS} preset-all
 	fi
 }
 
-- 
2.19.1