[Qemu-devel] [PATCH 1/4] monitor: introduce monitor_read_console

[Lei Li <lilei@linux.vnet.ibm.com>]

This patch introduces monitor_read_console(), which will drop
into interactive mode with chardev ringbuf backend, and install
a readline handler. When the handler is invoked, the given data
will be written to ringbuf backend.

Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
---
 include/monitor/monitor.h |    3 +++
 monitor.c                 |   14 ++++++++++++++
 2 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h
index 1942cc4..e6a6f47 100644
--- a/include/monitor/monitor.h
+++ b/include/monitor/monitor.h
@@ -89,6 +89,9 @@ ReadLineState *monitor_get_rs(Monitor *mon);
 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
                           void *opaque);
 
+int monitor_read_console(Monitor *mon, const char *device,
+                         ReadLineFunc *readline_func, void *opaque);
+
 int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret);
 
 int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret);
diff --git a/monitor.c b/monitor.c
index 0aeaf6c..531095e 100644
--- a/monitor.c
+++ b/monitor.c
@@ -263,6 +263,20 @@ int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
     }
 }
 
+int monitor_read_console(Monitor *mon, const char *device,
+                         ReadLineFunc *readline_func, void *opaque)
+{
+    char prompt[60];
+
+    if (!mon->rs) {
+        return -1;
+    }
+
+    snprintf(prompt, sizeof(prompt), "%s: ", device);
+    readline_start(mon->rs, prompt, 0, readline_func, opaque);
+    return 0;
+}
+
 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
                                   void *opaque)
 {
-- 
1.7.7.6