From a9303ae3af9bbf482842c084cc7ba49e206538c2 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 24 Feb 2015 00:10:35 +0100
Subject: [PATCH] id128: add new sd_id128_is_null() call

(cherry picked from commit 15e80c7b75c3a3188bfaaa0baddccf31ae661a7a)
---
 src/systemd/sd-id128.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/systemd/sd-id128.h b/src/systemd/sd-id128.h
index 48fd87671b..9f445278bb 100644
--- a/src/systemd/sd-id128.h
+++ b/src/systemd/sd-id128.h
@@ -106,6 +106,10 @@ _sd_pure_ static inline int sd_id128_equal(sd_id128_t a, sd_id128_t b) {
         return memcmp(&a, &b, 16) == 0;
 }
 
+_sd_pure_ static inline int sd_id128_is_null(sd_id128_t a) {
+        return a.qwords[0] == 0 && a.qwords[1] == 0;
+}
+
 #define SD_ID128_NULL ((const sd_id128_t) { .qwords = { 0, 0 }})
 
 _SD_END_DECLARATIONS;