monitor: Rework modal password input (Jan Kiszka)

Currently, waiting for the user to type in some password blocks the
whole VM because monitor_readline starts its own I/O loop. And this loop
also screws up reading passwords from virtual console.

Patch below fixes the shortcomings by using normal I/O processing also
for waiting on a password. To keep to modal property for the monitor
terminal, the command handler is temporarily replaced by a password
handler and a callback infrastructure is established to process the
result before switching back to command mode.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6710 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 5 insertions, 1 deletions

diff --git a/console.h b/console.h
index f9f3fc739..dcb49adad 100644
--- a/console.h
+++ b/console.h
@@ -304,7 +304,11 @@ void term_flush(void);
 void term_print_help(void);
 void monitor_suspend(void);
 void monitor_resume(void);
-int monitor_read_bdrv_key(BlockDriverState *bs);
+
+#include "block.h"
+void monitor_read_bdrv_key_start(BlockDriverState *bs,
+                                 BlockDriverCompletionFunc *completion_cb,
+                                 void *opaque);
 
 /* readline.c */
 typedef void ReadLineFunc(void *opaque, const char *str);