[RFC PATCH 03/10] block: Use qemu_security_policy_taint() API

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

Add the BlockDriver::bdrv_taints_security_policy() handler.
Drivers implementing it might taint the global QEMU security
policy.

Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 include/block/block_int.h | 6 +++++-
 block.c                   | 6 ++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/block/block_int.h b/include/block/block_int.h
index f1a54db0f8c..0ec0a5c06e9 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -169,7 +169,11 @@ struct BlockDriver {
     int (*bdrv_file_open)(BlockDriverState *bs, QDict *options, int flags,
                           Error **errp);
     void (*bdrv_close)(BlockDriverState *bs);
-
+    /*
+     * Return %true if the driver is withing QEMU security policy boundary,
+     * %false otherwise. See: https://www.qemu.org/contribute/security-process/
+     */
+    bool (*bdrv_taints_security_policy)(BlockDriverState *bs);
 
     int coroutine_fn (*bdrv_co_create)(BlockdevCreateOptions *opts,
                                        Error **errp);
diff --git a/block.c b/block.c
index b2b66263f9a..696ba486001 100644
--- a/block.c
+++ b/block.c
@@ -49,6 +49,7 @@
 #include "qemu/timer.h"
 #include "qemu/cutils.h"
 #include "qemu/id.h"
+#include "qemu-common.h"
 #include "block/coroutines.h"
 
 #ifdef CONFIG_BSD
@@ -1587,6 +1588,11 @@ static int bdrv_open_driver(BlockDriverState *bs, 
BlockDriver *drv,
         }
     }
 
+    if (drv->bdrv_taints_security_policy) {
+        qemu_security_policy_taint(drv->bdrv_taints_security_policy(bs),
+                                   "Block protocol '%s'", drv->format_name);
+    }
+
     return 0;
 open_failed:
     bs->drv = NULL;
-- 
2.31.1