char-socket: update local address after listen

This is mainly useful to know the actual bound port when using port 0.

For example, when starting qemu with socket on port 0, before:
QEMU waiting for connection on: disconnected:tcp:localhost:0,server
After:
QEMU waiting for connection on: disconnected:tcp:localhost:32454,server

Signed-off-by: Marc-André Lureau <[email protected]>

diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index 511a82960d066e041ce5ed2912a50ec3f6985b9f..f24961ad1611dcffbb4b35d63e94e357b8dba975 100644 (file)
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -911,6 +911,11 @@ static void qmp_chardev_open_socket(Chardev *chr,
             if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
                 goto error;
             }
+
+            qapi_free_SocketAddress(s->addr);
+            s->addr = socket_local_address(sioc->fd, errp);
+            update_disconnected_filename(s);
+
             s->listen_ioc = sioc;
             if (is_waitconnect &&
                 qemu_chr_wait_connected(chr, errp) < 0) {