abuf: Add a function to copy a buffer
It is useful to be able to copy an abuf, to allow changes while
preserving the original. Add a function for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/abuf.c b/lib/abuf.c
index 3cbe320..28c748a 100644
--- a/lib/abuf.c
+++ b/lib/abuf.c
@@ -128,6 +128,20 @@
return true;
}
+bool abuf_copy(const struct abuf *old, struct abuf *copy)
+{
+ char *data;
+
+ data = malloc(old->size);
+ if (!data)
+ return false;
+ memcpy(data, old->data, old->size);
+ abuf_init_set(copy, data, old->size);
+ copy->alloced = true;
+
+ return true;
+}
+
void abuf_init_const(struct abuf *abuf, const void *data, size_t size)
{
/* for now there is no flag indicating that the abuf data is constant */