fix(sys-apps/systemd) add mkdir bugfix from @philips

sdk_container/src/third_party/coreos-overlay/sys-apps/systemd/files/211-0001-nspawn-allow-EEXIST-on-mkdir_safe-home-uid.patch

@@ -0,0 +1,28 @@
+From aca07d5e53da1970b31907fc07237800424e84f1 Mon Sep 17 00:00:00 2001
+From: Brandon Philips <brandon.philips@coreos.com>
+Date: Thu, 13 Mar 2014 15:19:40 -0700
+Subject: [PATCH] nspawn: allow -EEXIST on mkdir_safe /home/${uid}
+
+With systemd 211 nspawn attempts to create the home directory for the
+given uid. However, if the home directory already exists then it will
+fail. Don't error out on -EEXIST.
+---
+ src/nspawn/nspawn.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
+index b637b51..7c3d7b8 100644
+--- a/src/nspawn/nspawn.c
++++ b/src/nspawn/nspawn.c
+@@ -2543,7 +2543,7 @@ static int change_uid_gid(char **_home) {
+         }
+ 
+         r = mkdir_safe(home, 0755, uid, gid);
+-        if (r < 0) {
++        if (r < 0 && r != -EEXIST) {
+                 log_error("Failed to make home directory: %s", strerror(-r));
+                 return r;
+         }
+-- 
+1.8.5.2 (Apple Git-48)
+

sdk_container/src/third_party/coreos-overlay/sys-apps/systemd/systemd-211-r1.ebuild

@@ -110,6 +110,7 @@ src_prepare() {
 
 	# upstream fixes not yet in the release
 	epatch "${FILESDIR}"/211-tmpfiles.patch
+	epatch "${FILESDIR}"/211-0001-nspawn-allow-EEXIST-on-mkdir_safe-home-uid.patch
 
 if [[ ${PV} == *9999 ]]; then
 	if use doc; then