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: 9217549 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B8898607D9 for ; Thu, 7 Jul 2016 01:19:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 517A32832B for ; Thu, 7 Jul 2016 01:19:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 45F9028503; Thu, 7 Jul 2016 01:19:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E054E2832B for ; Thu, 7 Jul 2016 01:19:23 +0000 (UTC) Received: from localhost ([::1]:36688 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKxyN-0002Ec-1g for patchwork-qemu-devel@patchwork.kernel.org; Wed, 06 Jul 2016 21:19:23 -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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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;