sds.h: Add inline function for getting the sdshdr

1 files changed, 4 insertions, 0 deletions

diff --git a/src/sds.h b/src/sds.h
index 9b81489..ac99b80 100644
--- a/src/sds.h
+++ b/src/sds.h
@@ -41,6 +41,10 @@ struct sdshdr {
     char buf[];
 };
 
+static inline struct sdshdr * sdsheader(const sds s) {
+    return s - (sizeof (struct sdshdr));
+}
+
 static inline size_t sdslen(const sds s) {
     struct sdshdr *sh = s - (sizeof (struct sdshdr));
     return sh->len;