systemd/0009-main-change-check-whet...

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From 59afe82145260430e426cf4ac999e8fc69e2a288 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 4 Jul 2014 03:13:05 +0200
Subject: [PATCH] main: change check whether /etc is unpopulated to look for
/etc/machine-id
Previously, we checked whether /etc was completely empty. This makes it
difficult though for container managers such as nspawn to install a
small number of files (such as /etc/timezone), and have the system
otherwise populate its own tree.
Hence, change this by looking for /etc/machine-id, which should be a
good sign whether /etc is populated or not.
(cherry picked from commit baa1bdf70f21848fbe01d3f383ae0f59d86a9bf3)
---
src/core/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/core/main.c b/src/core/main.c
index 38835fc620..1ca899998e 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1543,7 +1543,7 @@ int main(int argc, char *argv[]) {
if (in_initrd())
log_info("Running in initial RAM disk.");
- empty_etc = dir_is_empty("/etc") > 0;
+ empty_etc = access("/etc/machine-id", F_OK) < 0;
if (empty_etc)
log_info("Running with unpopulated /etc.");
} else {