X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Flist.h;h=ff39710b1dec75761b98a66e2605f824aceaa5a4;hp=889097b5acf36521157178f9d1e0995fce306bcc;hb=3f9b53a4a214a254bb27ed30994faf2a0fd12375;hpb=394c5bd3292c0f3168416c0a5f25989e557b3cfc

diff --git a/src/list.h b/src/list.h
index 889097b5..ff39710b 100644
--- a/src/list.h
+++ b/src/list.h
@@ -145,6 +145,24 @@ static inline void list_splice(const struct list_head *list,
 		__list_splice(list, head, head->next);
 }
 
+/* Move the entire list @old to the list @new, overwriting it. */
+static inline void list_transfer(struct list_head *old,
+				 struct list_head *new)
+{
+	struct list_head *prev, *next;
+
+	if (list_empty(old)) {
+		INIT_LIST_HEAD(new);
+	} else {
+		prev = old->prev;
+		next = old->next;
+		new->next = next;
+		new->prev = prev;
+		prev->next = new;
+		next->prev = new;
+	}
+}
+
 /**
  * list_splice_tail - join two lists, each list being a queue
  * @list: the new list to add.