[Qemu-devel] [PATCH 2/7] runstate: Add runstate store

[Juan Quintela <quintela@redhat.com>]

This allows us to store the current state to send it through migration.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 include/sysemu/sysemu.h |  1 +
 vl.c                    | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index d8539fd..ae217da 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -28,6 +28,7 @@ bool runstate_check(RunState state);
 void runstate_set(RunState new_state);
 int runstate_is_running(void);
 bool runstate_needs_reset(void);
+int runstate_store(char *str, int size);
 typedef struct vm_change_state_entry VMChangeStateEntry;
 typedef void VMChangeStateHandler(void *opaque, int running, RunState state);

diff --git a/vl.c b/vl.c
index 964d634..ce8e28b 100644
--- a/vl.c
+++ b/vl.c
@@ -677,6 +677,16 @@ bool runstate_check(RunState state)
     return current_run_state == state;
 }

+int runstate_store(char *str, int size)
+{
+    const char *state = RunState_lookup[current_run_state];
+
+    if (strlen(state)+1 > size)
+        return -1;
+    strncpy(str, state, strlen(state)+1);
+    return 0;
+}
+
 static void runstate_init(void)
 {
     const RunStateTransition *p;
-- 
2.1.0