From patchwork Thu Jul 7 01:00:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 645684 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3rlKYV06VYz9spN for ; Thu, 7 Jul 2016 11:20:14 +1000 (AEST) Received: from localhost ([::1]:36694 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKxz9-0003Hn-L8 for incoming@patchwork.ozlabs.org; Wed, 06 Jul 2016 21:20:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56713) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKxh9-0005a3-Bl for qemu-devel@nongnu.org; Wed, 06 Jul 2016 21:01:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKxh7-0006fb-H0 for qemu-devel@nongnu.org; Wed, 06 Jul 2016 21:01:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52476) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKxh7-0006fX-BT for qemu-devel@nongnu.org; Wed, 06 Jul 2016 21:01:33 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D21EF4620F; Thu, 7 Jul 2016 01:01:32 +0000 (UTC) Received: from localhost (ovpn-116-37.phx2.redhat.com [10.3.116.37]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6711VJE008487; Wed, 6 Jul 2016 21:01:32 -0400 From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Date: Thu, 7 Jul 2016 03:00:45 +0200 Message-Id: <20160707010053.28008-22-marcandre.lureau@redhat.com> In-Reply-To: <20160707010053.28008-1-marcandre.lureau@redhat.com> References: <20160707010053.28008-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 07 Jul 2016 01:01:32 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v4 21/29] char: add chr_wait_connected callback X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yuanhan.liu@linux.intel.com, victork@redhat.com, mst@redhat.com, jonshin@cisco.com, mukawa@igel.co.jp, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Marc-André Lureau A function to wait on the backend to be connected, to be used in the following patches. Signed-off-by: Marc-André Lureau --- include/sysemu/char.h | 8 ++++++++ qemu-char.c | 9 +++++++++ 2 files changed, 17 insertions(+) diff --git a/include/sysemu/char.h b/include/sysemu/char.h index 57df10a..15aa8ee 100644 --- a/include/sysemu/char.h +++ b/include/sysemu/char.h @@ -70,6 +70,7 @@ struct CharDriverState { int (*get_msgfds)(struct CharDriverState *s, int* fds, int num); int (*set_msgfds)(struct CharDriverState *s, int *fds, int num); int (*chr_add_client)(struct CharDriverState *chr, int fd); + int (*chr_wait_connected)(struct CharDriverState *chr, Error **errp); IOEventHandler *chr_event; IOCanReadHandler *chr_can_read; IOReadHandler *chr_read; @@ -151,6 +152,13 @@ CharDriverState *qemu_chr_new(const char *label, const char *filename, */ void qemu_chr_disconnect(CharDriverState *chr); +/** + * @qemu_chr_wait_connected: + * + * Wait for characted backend to be connected. + */ +int qemu_chr_wait_connected(CharDriverState *chr, Error **errp); + /** * @qemu_chr_new_noreplay: * diff --git a/qemu-char.c b/qemu-char.c index c4fa779..1daadc1 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -3139,6 +3139,15 @@ static gboolean tcp_chr_accept(QIOChannel *channel, return TRUE; } +int qemu_chr_wait_connected(CharDriverState *chr, Error **errp) +{ + if (chr->chr_wait_connected) { + return chr->chr_wait_connected(chr, errp); + } + + return 0; +} + static void tcp_chr_close(CharDriverState *chr) { TCPCharDriver *s = chr->opaque;