[Qemu-devel] [PATCH] vl.c: disallow command line fw cfg without opt/

["Michael S. Tsirkin" <mst@redhat.com>]

Allowing arbitary file names on command line is setting us up for
failure: future guests will look for a specific QEMU-specified name and
will get confused finding a user file there.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 vl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vl.c b/vl.c
index 7a28982..5654af6 100644
--- a/vl.c
+++ b/vl.c
@@ -2321,6 +2321,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
     if (strncmp(name, "opt/", 4) != 0) {
-        error_report("warning: externally provided fw_cfg item names "
-                     "should be prefixed with \"opt/\"");
+        error_report("externally provided fw_cfg item names "
+                     "must be prefixed with \"opt/\"");
+        return -1;
     }
     if (nonempty_str(str)) {
         size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
-- 
MST