hmp/migration: add migrate_recover command

Sister command to migrate-recover in QMP.
Reviewed-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: NPeter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-22-peterx@redhat.com>
Signed-off-by: NJuan Quintela <quintela@redhat.com>

hmp-commands.hx

@@ -957,7 +957,20 @@ STEXI
 @findex migrate_incoming
 Continue an incoming migration using the @var{uri} (that has the same syntax
 as the -incoming option).
+ETEXI
 
+    {
+        .name       = "migrate_recover",
+        .args_type  = "uri:s",
+        .params     = "uri",
+        .help       = "Continue a paused incoming postcopy migration",
+        .cmd        = hmp_migrate_recover,
+    },
+
+STEXI
+@item migrate_recover @var{uri}
+@findex migrate_recover
+Continue a paused incoming postcopy migration using the @var{uri}.
 ETEXI
 
     {

hmp.c

@@ -1517,6 +1517,16 @@ void hmp_migrate_incoming(Monitor *mon, const QDict *qdict)
     hmp_handle_error(mon, &err);
 }
 
+void hmp_migrate_recover(Monitor *mon, const QDict *qdict)
+{
+    Error *err = NULL;
+    const char *uri = qdict_get_str(qdict, "uri");
+
+    qmp_migrate_recover(uri, &err);
+
+    hmp_handle_error(mon, &err);
+}
+
 /* Kept for backwards compatibility */
 void hmp_migrate_set_downtime(Monitor *mon, const QDict *qdict)
 {

hmp.h

@@ -68,6 +68,7 @@ void hmp_info_snapshots(Monitor *mon, const QDict *qdict);
 void hmp_migrate_cancel(Monitor *mon, const QDict *qdict);
 void hmp_migrate_continue(Monitor *mon, const QDict *qdict);
 void hmp_migrate_incoming(Monitor *mon, const QDict *qdict);
+void hmp_migrate_recover(Monitor *mon, const QDict *qdict);
 void hmp_migrate_set_downtime(Monitor *mon, const QDict *qdict);
 void hmp_migrate_set_speed(Monitor *mon, const QDict *qdict);
 void hmp_migrate_set_capability(Monitor *mon, const QDict *qdict);