File bsc1073877-0002-apparmor-clobber-docker-default-profile-on-start.patch of Package docker.8481

From 8edc54753ab5ea9294c55ec32b49c9eb7cdf3892 Mon Sep 17 00:00:00 2001
From: Aleksa Sarai <asarai@suse.de>
Date: Fri, 29 Jun 2018 17:59:30 +1000
Subject: [PATCH 2/2] apparmor: clobber docker-default profile on start

In the process of making docker-default reloading far less expensive,
567ef8e7858c ("daemon: switch to 'ensure' workflow for AppArmor
profiles") mistakenly made the initial profile load at dockerd start-up
lazy. As a result, if you have a running Docker daemon and upgrade it to
a new one with an updated AppArmor profile the new profile will not take
effect (because the old one is still loaded). The fix for this is quite
trivial, and just requires us to clobber the profile on start-up.

Fixes: 567ef8e7858c ("daemon: switch to 'ensure' workflow for AppArmor profiles")
SUSE-Bugs: bsc#1099277
Signed-off-by: Aleksa Sarai <asarai@suse.de>
---
 components/engine/daemon/apparmor_default.go       | 14 ++++++++++----
 .../engine/daemon/apparmor_default_unsupported.go  |  4 ++++
 components/engine/daemon/daemon.go                 |  4 +++-
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/components/engine/daemon/apparmor_default.go b/components/engine/daemon/apparmor_default.go
index 2a418b25c241..c3e271ee4774 100644
--- a/components/engine/daemon/apparmor_default.go
+++ b/components/engine/daemon/apparmor_default.go
@@ -14,6 +14,15 @@ const (
 	defaultApparmorProfile = "docker-default"
 )
 
+func clobberDefaultAppArmorProfile() error {
+	if apparmor.IsEnabled() {
+		if err := aaprofile.InstallDefault(defaultApparmorProfile); err != nil {
+			return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded: %s", defaultApparmorProfile, err)
+		}
+	}
+	return nil
+}
+
 func ensureDefaultAppArmorProfile() error {
 	if apparmor.IsEnabled() {
 		loaded, err := aaprofile.IsLoaded(defaultApparmorProfile)
@@ -27,10 +36,7 @@ func ensureDefaultAppArmorProfile() error {
 		}
 
 		// Load the profile.
-		if err := aaprofile.InstallDefault(defaultApparmorProfile); err != nil {
-			return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded: %s", defaultApparmorProfile, err)
-		}
+		return clobberDefaultAppArmorProfile()
 	}
-
 	return nil
 }
diff --git a/components/engine/daemon/apparmor_default_unsupported.go b/components/engine/daemon/apparmor_default_unsupported.go
index cd2dd9702ef2..17584063c711 100644
--- a/components/engine/daemon/apparmor_default_unsupported.go
+++ b/components/engine/daemon/apparmor_default_unsupported.go
@@ -2,6 +2,10 @@
 
 package daemon
 
+func clobberDefaultAppArmorProfile() error {
+	return nil
+}
+
 func ensureDefaultAppArmorProfile() error {
 	return nil
 }
diff --git a/components/engine/daemon/daemon.go b/components/engine/daemon/daemon.go
index a11a1f8691cc..6f8846b19f57 100644
--- a/components/engine/daemon/daemon.go
+++ b/components/engine/daemon/daemon.go
@@ -594,7 +594,9 @@ func NewDaemon(config *config.Config, registryService registry.Service, containe
 		logrus.Warnf("Failed to configure golang's threads limit: %v", err)
 	}
 
-	if err := ensureDefaultAppArmorProfile(); err != nil {
+	// Make sure we clobber any pre-existing docker-default profile to ensure
+	// that upgrades to the profile actually work smoothly.
+	if err := clobberDefaultAppArmorProfile(); err != nil {
 		logrus.Errorf(err.Error())
 	}
 
-- 
2.17.1
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