systemd: do not create machine-id

There is no reason to have an emtpy machine-id as part of the systemd
package.  Either:

i)  the filesystem is writable and the file will be created
automatically; or
ii) the filesystem is read-only, in which case the empty machine-id file
should be created as part of the read-only-rootfs tweaks.

(From OE-Core rev: 76444b63e614baea33c044851a5859f6d1e69729)

Signed-off-by: Jonas Bonn <jonas@norrbonn.se>
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index bde58ad6cd..89f8efd323 100644
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -126,6 +126,12 @@ read_only_rootfs_hook () {
                         ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh
                 fi
         fi
+
+        if ${@bb.utils.contains("DISTRO_FEATURES", "systemd", "true", "false", d)}; then
+        # 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
+        fi
 }
 
 #