config: enable seccomp profile only when compiled with libseccomp

Make lxc fail if seccomp.profile is specified but lxc is compiled
without seccomp support. Currently, seccomp.profile is silently ignored
if is specified in such a scenario. This could lead to the false
impression that the seccomp filter is applied while it actually isn't.

Signed-off-by: Maximilian Blenk <Maximilian.Blenk@bmw.de>

src/lxc/confile.c

@@ -1124,7 +1124,11 @@ static int set_config_seccomp_notify_proxy(const char *key, const char *value,
 static int set_config_seccomp_profile(const char *key, const char *value,
 				      struct lxc_conf *lxc_conf, void *data)
 {
+#ifdef HAVE_SECCOMP
 	return set_config_path_item(&lxc_conf->seccomp.seccomp, value);
+#else
+	return ret_set_errno(-1, ENOSYS);
+#endif
 }
 
 static int set_config_execute_cmd(const char *key, const char *value,
@@ -4099,7 +4103,11 @@ static int get_config_seccomp_notify_proxy(const char *key, char *retv, int inle
 static int get_config_seccomp_profile(const char *key, char *retv, int inlen,
 				      struct lxc_conf *c, void *data)
 {
+#ifdef HAVE_SECCOMP
 	return lxc_get_conf_str(retv, inlen, c->seccomp.seccomp);
+#else
+	return ret_errno(ENOSYS);
+#endif
 }
 
 static int get_config_autodev(const char *key, char *retv, int inlen,