qdev-monitor: print help to stdout

qdev_device_help() is used from command line "-device help", or from
HMP "device_add". If used from command line, print help to stdout
(it is only printed on explicit demand).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 19 insertions, 13 deletions

diff --git a/qdev-monitor.c b/qdev-monitor.c
index 61e0300991..802c18a74e 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -104,22 +104,31 @@ static bool qdev_class_has_alias(DeviceClass *dc)
     return (qdev_class_get_alias(dc) != NULL);
 }
 
+static void out_printf(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    monitor_vfprintf(stdout, fmt, ap);
+    va_end(ap);
+}
+
 static void qdev_print_devinfo(DeviceClass *dc)
 {
-    error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
+    out_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
     if (dc->bus_type) {
-        error_printf(", bus %s", dc->bus_type);
+        out_printf(", bus %s", dc->bus_type);
     }
     if (qdev_class_has_alias(dc)) {
-        error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
+        out_printf(", alias \"%s\"", qdev_class_get_alias(dc));
     }
     if (dc->desc) {
-        error_printf(", desc \"%s\"", dc->desc);
+        out_printf(", desc \"%s\"", dc->desc);
     }
     if (!dc->user_creatable) {
-        error_printf(", no-user");
+        out_printf(", no-user");
     }
-    error_printf("\n");
+    out_printf("\n");
 }
 
 static void qdev_print_devinfos(bool show_no_user)
@@ -155,8 +164,7 @@ static void qdev_print_devinfos(bool show_no_user)
                 continue;
             }
             if (!cat_printed) {
-                error_printf("%s%s devices:\n", i ? "\n" : "",
-                             cat_name[i]);
+                out_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]);
                 cat_printed = true;
             }
             qdev_print_devinfo(dc);
@@ -278,13 +286,11 @@ int qdev_device_help(QemuOpts *opts)
     }
 
     for (prop = prop_list; prop; prop = prop->next) {
-        error_printf("%s.%s=%s", driver,
-                     prop->value->name,
-                     prop->value->type);
+        out_printf("%s.%s=%s", driver, prop->value->name, prop->value->type);
         if (prop->value->has_description) {
-            error_printf(" (%s)\n", prop->value->description);
+            out_printf(" (%s)\n", prop->value->description);
         } else {
-            error_printf("\n");
+            out_printf("\n");
         }
     }