diff --git a/libblkid/namespace.h b/libblkid/namespace.h
new file mode 100644
index 0000000..3a219ce
--- /dev/null
+++ b/libblkid/namespace.h
@@ -0,0 +1,42 @@
+/* Compat code so unshare and setns can be used with older libcs */
+#ifndef UTIL_LINUX_NAMESPACE_H
+# define UTIL_LINUX_NAMESPACE_H
+
+# include <sched.h>
+
+# ifndef CLONE_NEWSNS
+#  define CLONE_NEWNS 0x00020000
+# endif
+# ifndef CLONE_NEWUTS
+#  define CLONE_NEWUTS 0x04000000
+# endif
+# ifndef CLONE_NEWIPC
+#  define CLONE_NEWIPC 0x08000000
+# endif
+# ifndef CLONE_NEWNET
+#  define CLONE_NEWNET 0x40000000
+# endif
+# ifndef CLONE_NEWUSER
+#  define CLONE_NEWUSER 0x10000000
+# endif
+# ifndef CLONE_NEWPID
+#  define CLONE_NEWPID 0x20000000
+# endif
+
+# ifndef HAVE_UNSHARE
+#  include <sys/syscall.h>
+static inline int unshare(int flags)
+{
+	return syscall(SYS_unshare, flags);
+}
+# endif
+
+# ifndef HAVE_SETNS
+#  include <sys/syscall.h>
+static inline int setns(int fd, int nstype)
+{
+	return syscall(SYS_setns, fd, nstype);
+}
+# endif
+
+#endif	/* UTIL_LINUX_NAMESPACE_H */