log: introduce a macro to format message id

[elogind.git] / src / systemd / sd-id128.h

diff --git a/src/systemd/sd-id128.h b/src/systemd/sd-id128.h
index 05521ae4bbed646e1cf9a13a2051dce268545fb8..fa17be84347815de3e15079400b9f4ecaec1b184 100644 (file)
--- a/src/systemd/sd-id128.h
+++ b/src/systemd/sd-id128.h
@@ -65,6 +65,7 @@ static inline int sd_id128_equal(sd_id128_t a, sd_id128_t b) {
 }
 
 #define SD_ID128_NULL ((sd_id128_t) { .qwords = { 0, 0 }})
+#define MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x)
 
 #ifdef __cplusplus
 }