[Xen-devel] [PATCH] ioemu: Disable format auto-probing in monitor command change

[Markus Armbruster <armbru@xxxxxxxxxx>]

Format auto-probing of writable images is a security hole.  The last
known remaining instance is monitor command change.  Disable probing
there and use raw.  This breaks change for images in all other
formats.

Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>

diff -r ac745ad5f018 tools/ioemu/monitor.c
--- a/tools/ioemu/monitor.c     Fri Jun 13 16:10:50 2008 +0100
+++ b/tools/ioemu/monitor.c     Tue Jun 17 18:43:25 2008 +0200
@@ -387,7 +387,7 @@ static void do_change_block(const char *
     }
     if (eject_device(bs, 0) < 0)
         return;
-    bdrv_open(bs, filename, 0);
+    bdrv_open2(bs, filename, 0, &bdrv_raw);
     if (bdrv_is_encrypted(bs)) {
         term_printf("%s is encrypted.\n", device);
         for(i = 0; i < 3; i++) {

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