monitor: Introduce MONITOR_USE_CONTROL flag

This flag will be set when Monitor enters "control mode", in
which the output will be defined by the QEMU Monitor Protocol.

This also introduces a macro to check if the flag is set.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/monitor.c b/monitor.c
index 549e98b47a..6733022a16 100644
--- a/monitor.c
+++ b/monitor.c
@@ -119,6 +119,12 @@ Monitor *cur_mon = NULL;
 static void monitor_command_cb(Monitor *mon, const char *cmdline,
                                void *opaque);
 
+/* Return true if in control mode, false otherwise */
+static inline int monitor_ctrl_mode(const Monitor *mon)
+{
+    return (mon->flags & MONITOR_USE_CONTROL);
+}
+
 static void monitor_read_command(Monitor *mon, int show_prompt)
 {
     readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
diff --git a/monitor.h b/monitor.h
index c7d2d0bca0..6cb1d4b353 100644
--- a/monitor.h
+++ b/monitor.h
@@ -11,6 +11,7 @@ extern Monitor *cur_mon;
 /* flags for monitor_init */
 #define MONITOR_IS_DEFAULT    0x01
 #define MONITOR_USE_READLINE  0x02
+#define MONITOR_USE_CONTROL   0x04
 
 void monitor_init(CharDriverState *chr, int flags);