From: Kevin Wolf <kwolf@redhat.com>
Date: Fri, 11 Oct 2019 19:49:17 +0000 (+0200)
Subject: qemu-io: Support help options for --object
X-Git-Tag: qemu-xen-4.14.0~347^2~4
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=4fa1f0dc052968b41d2bdffd9cb9fcab8137cdaf;p=qemu-xen.git

qemu-io: Support help options for --object

Instead of parsing help options as normal object properties and
returning an error, provide the same help functionality as the system
emulator in qemu-io, too.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---

diff --git a/qemu-io.c b/qemu-io.c
index f64eca6940..91e3276592 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -475,6 +475,13 @@ static QemuOptsList qemu_object_opts = {
     },
 };
 
+static bool qemu_io_object_print_help(const char *type, QemuOpts *opts)
+{
+    if (user_creatable_print_help(type, opts)) {
+        exit(0);
+    }
+    return true;
+}
 
 static QemuOptsList file_opts = {
     .name = "file",
@@ -622,7 +629,7 @@ int main(int argc, char **argv)
 
     qemu_opts_foreach(&qemu_object_opts,
                       user_creatable_add_opts_foreach,
-                      NULL, &error_fatal);
+                      qemu_io_object_print_help, &error_fatal);
 
     if (!trace_init_backends()) {
         exit(1);