[ptxdist] [PATCH] machine-id: make using rc-once optional

[Artur Wiebe <artur@4wiebe.de>]

If not set only an empty /etc/machine-id will be installed.

Signed-off-by: Artur Wiebe <artur@4wiebe.de>
---
 rules/machine-id.in       | 22 ++++++++++++++++++----
 rules/machine-id.make     |  4 ++++
 rules/machine-id.postinst |  5 +++--
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/rules/machine-id.in b/rules/machine-id.in
index f18fec554..2a3901f41 100644
--- a/rules/machine-id.in
+++ b/rules/machine-id.in
@@ -1,11 +1,25 @@
 ## SECTION=initmethod
 
-config MACHINE_ID
+menuconfig MACHINE_ID
 	tristate
 	prompt "create /etc/machine-id"
-	select RC_ONCE			if RUNTIME
-	select UTIL_LINUX_NG		if !INITMETHOD_SYSTEMD
-	select UTIL_LINUX_NG_UUIDGEN	if !INITMETHOD_SYSTEMD
+	select RC_ONCE			if MACHINE_ID_RC_ONCE && RUNTIME
+	select UTIL_LINUX_NG		if MACHINE_ID_RC_ONCE && !INITMETHOD_SYSTEMD
+	select UTIL_LINUX_NG_UUIDGEN	if MACHINE_ID_RC_ONCE && !INITMETHOD_SYSTEMD
 	help
 	  Enable this to make sure there is always a unique /etc/machine-id
 	  available in the system.
+
+if MACHINE_ID
+
+config MACHINE_ID_RC_ONCE
+	bool "generate (bbinit) or save (systemd) machine-id using rc-once at first boot"
+	default y
+	help
+	  If not set only an empty /etc/machine-id will be installed.
+	  Systemd:
+	  If /etc/machine-id exists and is empty, systemd will bind-mount
+	  a file containing the new machine-id over it and later try 
+	  to commit it to disk (if /etc/ is writable).
+
+endif
diff --git a/rules/machine-id.make b/rules/machine-id.make
index 3883d64cb..e1cbdcc42 100644
--- a/rules/machine-id.make
+++ b/rules/machine-id.make
@@ -27,7 +27,11 @@ $(STATEDIR)/machine-id.targetinstall:
 	@$(call install_fixup,machine-id,AUTHOR,"Michael Olbrich <m.olbrich@pengutronix.de>")
 	@$(call install_fixup,machine-id,DESCRIPTION,missing)
 
+	@$(call install_copy, machine-id, 0, 0, 0644, /dev/null, /etc/machine-id)
+
+ifdef MACHINE_ID_RC_ONCE
 	@$(call install_alternative, machine-id, 0, 0, 0755, /etc/rc.once.d/machine-id)
+endif
 
 	@$(call install_finish,machine-id)
 
diff --git a/rules/machine-id.postinst b/rules/machine-id.postinst
index 2060129d1..f1648226b 100644
--- a/rules/machine-id.postinst
+++ b/rules/machine-id.postinst
@@ -1,3 +1,4 @@
 #!/bin/sh
-touch "$DESTDIR/etc/machine-id"
-$DESTDIR/usr/sbin/enable-rc-once machine-id
+if [ -f $DESTDIR/etc/rc.once.d/machine-id ]; then
+	$DESTDIR/usr/sbin/enable-rc-once machine-id
+fi
-- 
2.29.2


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