[OE-core] [PATCH 1/7] systemd: do not create machine-id

[Jonas Bonn]

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.
---
 meta/classes/rootfs-postcommands.bbclass  | 6 ++++++
 meta/recipes-core/systemd/systemd-conf.bb | 9 ++-------
 2 files changed, 8 insertions(+), 7 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
 }
 
 #
diff --git a/meta/recipes-core/systemd/systemd-conf.bb b/meta/recipes-core/systemd/systemd-conf.bb
index 9bb27fd96d..7fe2e1105b 100644
--- a/meta/recipes-core/systemd/systemd-conf.bb
+++ b/meta/recipes-core/systemd/systemd-conf.bb
@@ -7,14 +7,13 @@ DefaultTimeoutStartSec setting."
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
 
-CONFFILES_${PN} = "${sysconfdir}/machine-id \
-${sysconfdir}/systemd/coredump.conf \
+CONFFILES_${PN} = "${sysconfdir}/systemd/coredump.conf \
 ${sysconfdir}/systemd/journald.conf \
 ${sysconfdir}/systemd/logind.conf \
 ${sysconfdir}/systemd/system.conf \
 ${sysconfdir}/systemd/user.conf"
 
-FILES_${PN} = "${sysconfdir}/machine-id ${sysconfdir}/systemd"
+FILES_${PN} = "${sysconfdir}/systemd"
 
 do_configure[noexec] = '1'
 do_compile[noexec] = '1'
@@ -23,10 +22,6 @@ do_install() {
 	rm -rf ${D}/${sysconfdir}/systemd
 	install -d ${D}/${sysconfdir}/systemd
 
-	# 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 ${D}${sysconfdir}/machine-id
-
 	install -m 0644 ${S}/src/coredump/coredump.conf ${D}${sysconfdir}/systemd/coredump.conf
 
 	install -m 0644 ${S}/src/journal/journald.conf ${D}${sysconfdir}/systemd/journald.conf
-- 
2.19.1