Move apparmor to top level pkg

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

apparmor/setup.go

@@ -0,0 +1,110 @@
+package apparmor
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path"
+)
+
+const (
+	DefaultProfilePath = "/etc/apparmor.d/docker"
+)
+
+const DefaultProfile = `
+#include <tunables/global>
+profile docker-default flags=(attach_disconnected,mediate_deleted) {
+  #include <abstractions/base>
+  network,
+  capability,
+  file,
+  umount,
+
+  mount fstype=tmpfs,
+  mount fstype=mqueue,
+  mount fstype=fuse.*,
+  mount fstype=binfmt_misc -> /proc/sys/fs/binfmt_misc/,
+  mount fstype=efivarfs -> /sys/firmware/efi/efivars/,
+  mount fstype=fusectl -> /sys/fs/fuse/connections/,
+  mount fstype=securityfs -> /sys/kernel/security/,
+  mount fstype=debugfs -> /sys/kernel/debug/,
+  mount fstype=proc -> /proc/,
+  mount fstype=sysfs -> /sys/,
+
+  deny @{PROC}/sys/fs/** wklx,
+  deny @{PROC}/sysrq-trigger rwklx,
+  deny @{PROC}/mem rwklx,
+  deny @{PROC}/kmem rwklx,
+  deny @{PROC}/sys/kernel/[^s][^h][^m]* wklx,
+  deny @{PROC}/sys/kernel/*/** wklx,
+
+  deny mount options=(ro, remount) -> /,
+  deny mount fstype=debugfs -> /var/lib/ureadahead/debugfs/,
+  deny mount fstype=devpts,
+
+  deny /sys/[^f]*/** wklx,
+  deny /sys/f[^s]*/** wklx,
+  deny /sys/fs/[^c]*/** wklx,
+  deny /sys/fs/c[^g]*/** wklx,
+  deny /sys/fs/cg[^r]*/** wklx,
+  deny /sys/firmware/efi/efivars/** rwklx,
+  deny /sys/kernel/security/** rwklx,
+}
+`
+
+func InstallDefaultProfile(backupPath string) error {
+	if !IsEnabled() {
+		return nil
+	}
+
+	// If the profile already exists, check if we already have a backup
+	// if not, do the backup and override it. (docker 0.10 upgrade changed the apparmor profile)
+	// see gh#5049, apparmor blocks signals in ubuntu 14.04
+	if _, err := os.Stat(DefaultProfilePath); err == nil {
+		if _, err := os.Stat(backupPath); err == nil {
+			// If both the profile and the backup are present, do nothing
+			return nil
+		}
+		// Make sure the directory exists
+		if err := os.MkdirAll(path.Dir(backupPath), 0755); err != nil {
+			return err
+		}
+
+		// Create the backup file
+		f, err := os.Create(backupPath)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		src, err := os.Open(DefaultProfilePath)
+		if err != nil {
+			return err
+		}
+		defer src.Close()
+
+		if _, err := io.Copy(f, src); err != nil {
+			return err
+		}
+	}
+
+	// Make sure /etc/apparmor.d exists
+	if err := os.MkdirAll(path.Dir(DefaultProfilePath), 0755); err != nil {
+		return err
+	}
+
+	if err := ioutil.WriteFile(DefaultProfilePath, []byte(DefaultProfile), 0644); err != nil {
+		return err
+	}
+
+	// the current functionality of the load script is the exit 0 if the parser does not exist.
+	// we think we should fail loudly if you have apparmor enabled but not the parser to load
+	// the profile for use.
+	output, err := exec.Command("/sbin/apparmor_parser", "-r", "-W", "docker").CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("Error loading docker profile: %s (%s)", err, output)
+	}
+	return nil
+}