[PATCH 2/3] vnc: add a is_vnc_active() helper

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This helper is introduced to query the status of vnc.

Signed-off-by: Amit Shah <amit.shah@xxxxxxxxxx>
---
 vnc.c |   10 +++++++++-
 vnc.h |    2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/vnc.c b/vnc.c
index de0ff87..e4e78dc 100644
--- a/vnc.c
+++ b/vnc.c
@@ -176,9 +176,17 @@ static void do_info_vnc_client(Monitor *mon, VncState *client)
 #endif
 }
 
-void do_info_vnc(Monitor *mon)
+int is_vnc_active(void)
 {
     if (vnc_display == NULL || vnc_display->display == NULL) {
+        return 0;
+    }
+    return 1;
+}
+
+void do_info_vnc(Monitor *mon)
+{
+    if (!is_vnc_active()) {
         monitor_printf(mon, "Server: disabled\n");
     } else {
         char *serverAddr = vnc_socket_local_addr("     address: %s:%s\n",
diff --git a/vnc.h b/vnc.h
index 3ae95f3..9739c35 100644
--- a/vnc.h
+++ b/vnc.h
@@ -313,7 +313,7 @@ void buffer_append(Buffer *buffer, const void *data, size_t len);
 
 /* Misc helpers */
 
+int is_vnc_active(void);
 char *vnc_socket_local_addr(const char *format, int fd);
 char *vnc_socket_remote_addr(const char *format, int fd);
-
 #endif /* __QEMU_VNC_H */
-- 
1.6.2.5

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