From 6867b0a3fb6491e1d26c747100dad364dbf20c70 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Sat, 6 Oct 2012 18:44:05 +0100
Subject: launch: add_null_drive: Force null drive to be writable.

Because we create a special file, there is no point forcing qemu
to create an overlay as well.  Save time by setting readonly = 0.
---
 src/launch.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/launch.c b/src/launch.c
index f325d9f2..4b5ed347 100644
--- a/src/launch.c
+++ b/src/launch.c
@@ -190,6 +190,11 @@ add_null_drive (guestfs_h *g, int readonly, const char *format,
   if (guestfs___lazy_make_tmpdir (g) == -1)
     return -1;
 
+  /* Because we create a special file, there is no point forcing qemu
+   * to create an overlay as well.  Save time by setting readonly = 0.
+   */
+  readonly = 0;
+
   tmpfile = safe_asprintf (g, "%s/devnull%d", g->tmpdir, ++g->unique);
   fd = open (tmpfile, O_WRONLY|O_CREAT|O_NOCTTY|O_CLOEXEC, 0600);
   if (fd == -1) {
-- 
cgit