[Qemu-devel] [PATCH] Modify qemu_opt_rename to realize renaming all items in opts

[Jun Li <junmuzi@gmail.com>]

Add realization of rename all items in opts for qemu_opt_rename.
e.g:
When add bps twice in command line, need to rename all bps to
throttling.bps-total.

Signed-off-by: Jun Li <junmuzi@gmail.com>
---
This patch solved following bug:
Bug 1145586 - qemu-kvm will give strange hint when add bps twice for a drive
ref:https://bugzilla.redhat.com/show_bug.cgi?id=1145586
---
 blockdev.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index b361fbb..7c39a06 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -536,10 +536,15 @@ static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
 {
     const char *value;
 
-    value = qemu_opt_get(opts, from);
-    if (value) {
-        qemu_opt_set(opts, to, value);
-        qemu_opt_unset(opts, from);
+    /* rename all items */
+    while (1) {
+        value = qemu_opt_get(opts, from);
+        if (value) {
+            qemu_opt_set(opts, to, value);
+            qemu_opt_unset(opts, from);
+        } else {
+            break;
+        }
     }
 }
 
-- 
1.9.3