Switch to new vendor directory layout

Fixes #113

Signed-off-by: Marcos Lilljedahl <marcosnils@gmail.com>

vendor/github.com/opencontainers/runc/libcontainer/setns_init_linux.go

@@ -0,0 +1,56 @@
+// +build linux
+
+package libcontainer
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/opencontainers/runc/libcontainer/apparmor"
+	"github.com/opencontainers/runc/libcontainer/keys"
+	"github.com/opencontainers/runc/libcontainer/label"
+	"github.com/opencontainers/runc/libcontainer/seccomp"
+	"github.com/opencontainers/runc/libcontainer/system"
+)
+
+// linuxSetnsInit performs the container's initialization for running a new process
+// inside an existing container.
+type linuxSetnsInit struct {
+	config *initConfig
+}
+
+func (l *linuxSetnsInit) getSessionRingName() string {
+	return fmt.Sprintf("_ses.%s", l.config.ContainerId)
+}
+
+func (l *linuxSetnsInit) Init() error {
+	// do not inherit the parent's session keyring
+	if _, err := keyctl.JoinSessionKeyring(l.getSessionRingName()); err != nil {
+		return err
+	}
+	if err := setupRlimits(l.config.Rlimits); err != nil {
+		return err
+	}
+	if l.config.NoNewPrivileges {
+		if err := system.Prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); err != nil {
+			return err
+		}
+	}
+	if l.config.Config.Seccomp != nil {
+		if err := seccomp.InitSeccomp(l.config.Config.Seccomp); err != nil {
+			return err
+		}
+	}
+	if err := finalizeNamespace(l.config); err != nil {
+		return err
+	}
+	if err := apparmor.ApplyProfile(l.config.AppArmorProfile); err != nil {
+		return err
+	}
+	if l.config.ProcessLabel != "" {
+		if err := label.SetProcessLabel(l.config.ProcessLabel); err != nil {
+			return err
+		}
+	}
+	return system.Execv(l.config.Args[0], l.config.Args[0:], os.Environ())
+}