diff --git a/src/shared/shl_dlist.h b/src/shared/shl_dlist.h
index 7cbf1e1..db4de9a 100644
--- a/src/shared/shl_dlist.h
+++ b/src/shared/shl_dlist.h
@@ -81,6 +81,11 @@ static inline void shl_dlist_unlink(struct shl_dlist *e)
 	}
 }
 
+static inline bool shl_dlist_linked(struct shl_dlist *e)
+{
+	return e->next && e->prev;
+}
+
 static inline bool shl_dlist_empty(struct shl_dlist *head)
 {
 	return head->next == head;
diff --git a/src/shared/shl_util.h b/src/shared/shl_util.h
index 16f5e6b..1f8b102 100644
--- a/src/shared/shl_util.h
+++ b/src/shared/shl_util.h
@@ -96,6 +96,11 @@ _shl_sentinel_ char *shl_strjoin(const char *first, ...);
 int shl_strsplit_n(const char *str, size_t len, const char *sep, char ***out);
 int shl_strsplit(const char *str, const char *sep, char ***out);
 
+static inline bool shl_isempty(const char *str)
+{
+	return !str || !*str;
+}
+
 static inline char *shl_startswith(const char *str, const char *prefix)
 {
 	if (!strncmp(str, prefix, strlen(prefix)))