Revert "Don't return the error if unable to create the network namespace"

This reverts commit 87497e8ebce78079ea5423ecb6080e82cfa36106.

systemd-hostnamed no longer hangs without network namespace support:

  PrivateNetwork=yes is configured, but the kernel does not support network namespaces, ignoring.

(From meta-phosphor rev: 3b6dd35154ba5e105ad1d4b65746711654ed34b0)

Change-Id: I41b5e1ae952b8bc3bc07819d7ab7e0fffd3629c7
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-core/systemd/systemd/0005-dont-return-error-if-unable-to-create-network-namespace.patch b/meta-phosphor/recipes-core/systemd/systemd/0005-dont-return-error-if-unable-to-create-network-namespace.patch
deleted file mode 100644
index d83bf72..0000000
--- a/meta-phosphor/recipes-core/systemd/systemd/0005-dont-return-error-if-unable-to-create-network-namespace.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-From 870b79559cd5841b3f680c914b4b2e770a9961cf Mon Sep 17 00:00:00 2001
-From: Ratan Gupta <ratagupt@in.ibm.com>
-Date: Thu, 20 Jul 2017 11:59:14 +0530
-Subject: [PATCH] Don't return the error if unable to create the network
- namespace
-
-On systems where kernel is not configured with namespace support
-then don't return error during setting up network namespace.
-
-Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
----
- src/core/namespace.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/src/core/namespace.c b/src/core/namespace.c
-index 1195e9a..f30dacf 100644
---- a/src/core/namespace.c
-+++ b/src/core/namespace.c
-@@ -986,7 +986,7 @@ int setup_netns(int netns_storage_socket[2]) {
-                 /* Nothing stored yet, so let's create a new namespace */
- 
-                 if (unshare(CLONE_NEWNET) < 0) {
--                        r = -errno;
-+                        r = 0;
-                         goto fail;
-                 }
- 
-@@ -994,7 +994,7 @@ int setup_netns(int netns_storage_socket[2]) {
- 
-                 netns = open("/proc/self/ns/net", O_RDONLY|O_CLOEXEC|O_NOCTTY);
-                 if (netns < 0) {
--                        r = -errno;
-+                        r = 0;
-                         goto fail;
-                 }
- 
--- 
-1.9.1
-
diff --git a/meta-phosphor/recipes-core/systemd/systemd_%.bbappend b/meta-phosphor/recipes-core/systemd/systemd_%.bbappend
index 7a4f49c..9611cab 100644
--- a/meta-phosphor/recipes-core/systemd/systemd_%.bbappend
+++ b/meta-phosphor/recipes-core/systemd/systemd_%.bbappend
@@ -8,9 +8,6 @@
 FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
 SRC_URI += "file://default.network"
 SRC_URI += "file://0001-sd-bus-Don-t-automatically-add-ObjectManager.patch"
-#TODO upstream the below patch via below issue
-#https://github.com/openbmc/openbmc/issues/2016
-SRC_URI += "file://0005-dont-return-error-if-unable-to-create-network-namespace.patch"
 SRC_URI += "file://0006-core-fix-the-check-if-CONFIG_CGROUP_BPF-is-on.patch"
 
 RRECOMMENDS_${PN} += "obmc-targets"