Control state snapshots from Android console.

This patch exposes Qemu's save, load, delete and list commands for
state snapshots on the Android console. A level of indirection is
added by means of the OutputChannel construct. This allows us to show
the output of the Qemu commands on the console rather than on the
monitor, while minimizing the differences with the upstream codebase.

The new commands are exposed only when the configuration constant
CONFIG_ANDROID_SNAPSHOTS is not 0.

Change-Id: I558d5cd505d321fe2da5835713d341d151f60534

1 files changed, 4 insertions, 2 deletions

diff --git a/monitor.c b/monitor.c
index 9de414a..b0b6a7e 100644
--- a/monitor.c
+++ b/monitor.c
@@ -165,11 +165,13 @@ static void monitor_puts(Monitor *mon, const char *str)
     }
 }
 
-void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
+int monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
 {
     char buf[4096];
-    vsnprintf(buf, sizeof(buf), fmt, ap);
+    int ret = vsnprintf(buf, sizeof(buf), fmt, ap);
     monitor_puts(mon, buf);
+
+    return ret;
 }
 
 void monitor_printf(Monitor *mon, const char *fmt, ...)