From eab8c83391960b9c66fcdb8d1b895a1624ead338 Mon Sep 17 00:00:00 2001
From: Dan Walsh <dwalsh@redhat.com>
Date: Tue, 1 Apr 2014 10:03:29 -0400
Subject: [PATCH] In certain cases, setting the process label will not happen.

When the code attempts to set the ProcessLabel, it checks if SELinux Is
enabled.  We have seen a case with some of our patches where the code
is fooled by the container to think that SELinux is not enabled.  Calling
label.Init before setting up the rest of the container, tells the library that
SELinux is enabled and everything works fine.

Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
---
 label/label.go              | 3 +++
 label/label_selinux.go      | 4 ++++
 libcontainer/nsinit/init.go | 2 ++
 3 files changed, 9 insertions(+)

diff --git a/label/label.go b/label/label.go
index ba1e9f4..be0d0ae 100644
--- a/label/label.go
+++ b/label/label.go
@@ -21,3 +21,6 @@ func SetFileLabel(path string, fileLabel string) error {
 func GetPidCon(pid int) (string, error) {
 	return "", nil
 }
+
+func Init() {
+}
diff --git a/label/label_selinux.go b/label/label_selinux.go
index 300a8b6..64a1720 100644
--- a/label/label_selinux.go
+++ b/label/label_selinux.go
@@ -67,3 +67,7 @@ func SetFileLabel(path string, fileLabel string) error {
 func GetPidCon(pid int) (string, error) {
 	return selinux.Getpidcon(pid)
 }
+
+func Init() {
+	selinux.SelinuxEnabled()
+}
diff --git a/libcontainer/nsinit/init.go b/libcontainer/nsinit/init.go
index 5aa5f9f..e5d69f5 100644
--- a/libcontainer/nsinit/init.go
+++ b/libcontainer/nsinit/init.go
@@ -58,6 +58,8 @@ func (ns *linuxNs) Init(container *libcontainer.Container, uncleanRootfs, consol
 	if err := system.ParentDeathSignal(uintptr(syscall.SIGTERM)); err != nil {
 		return fmt.Errorf("parent death signal %s", err)
 	}
+
+	label.Init()
 	ns.logger.Println("setup mount namespace")
 	if err := setupNewMountNamespace(rootfs, container.Mounts, console, container.ReadonlyFs, container.NoPivotRoot, container.Context["mount_label"]); err != nil {
 		return fmt.Errorf("setup mount namespace %s", err)