From 084937b3d7c4da3e3c48d05779f8cfbdc39a2ce6 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 18 Nov 2016 18:38:06 +0100
Subject: [PATCH] nspawn: support ephemeral boots from images

Previously --ephemeral was only supported with container trees in btrfs
subvolumes (i.e. in combination with --directory=). This adds support for
--ephemeral in conjunction with disk images (i.e. --image=) too.

As side effect this fixes that --ephemeral was accepted but ignored when using
-M on a container that turned out to be an image.

Fixes: #4664
---
 src/basic/missing.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/basic/missing.h b/src/basic/missing.h
index e9438aa90..71a448978 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -146,6 +146,10 @@
 #define GRND_RANDOM 0x0002
 #endif
 
+#ifndef FS_NOCOW_FL
+#define FS_NOCOW_FL 0x00800000
+#endif
+
 #ifndef BTRFS_IOCTL_MAGIC
 #define BTRFS_IOCTL_MAGIC 0x94
 #endif
-- 
2.30.2