9p: v9fs_path_copy() readability

lhs/rhs doesn't tell much about how argument are handled, dst/src is
and const arguments is clearer in my mind. Use g_memdup() while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>

2 files changed, 5 insertions, 6 deletions

diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 85a1ed8171..48fa48e720 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -190,12 +190,11 @@ v9fs_path_sprintf(V9fsPath *path, const char *fmt, ...)
     va_end(ap);
 }
 
-void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs)
+void v9fs_path_copy(V9fsPath *dst, const V9fsPath *src)
 {
-    v9fs_path_free(lhs);
-    lhs->data = g_malloc(rhs->size);
-    memcpy(lhs->data, rhs->data, rhs->size);
-    lhs->size = rhs->size;
+    v9fs_path_free(dst);
+    dst->size = src->size;
+    dst->data = g_memdup(src->data, src->size);
 }
 
 int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h
index 5ced427d86..bad8ee719c 100644
--- a/hw/9pfs/9p.h
+++ b/hw/9pfs/9p.h
@@ -343,7 +343,7 @@ void coroutine_fn v9fs_reclaim_fd(V9fsPDU *pdu);
 void v9fs_path_init(V9fsPath *path);
 void v9fs_path_free(V9fsPath *path);
 void v9fs_path_sprintf(V9fsPath *path, const char *fmt, ...);
-void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs);
+void v9fs_path_copy(V9fsPath *dst, const V9fsPath *src);
 int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
                       const char *name, V9fsPath *path);
 int v9fs_device_realize_common(V9fsState *s, const V9fsTransport *t,