From patchwork Fri Jul 29 03:17:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 9251987 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 E9E3260757 for ; Fri, 29 Jul 2016 03:47:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D169027D4A for ; Fri, 29 Jul 2016 03:47:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C608A27F95; Fri, 29 Jul 2016 03:47:00 +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 64CB827D4A for ; Fri, 29 Jul 2016 03:47:00 +0000 (UTC) Received: from localhost ([::1]:56937 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSylH-0008LZ-2i for patchwork-qemu-devel@patchwork.kernel.org; Thu, 28 Jul 2016 23:46:59 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39631) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSyIL-0006Q9-68 for qemu-devel@nongnu.org; Thu, 28 Jul 2016 23:17:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bSyIJ-00039U-7l for qemu-devel@nongnu.org; Thu, 28 Jul 2016 23:17:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55294) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bSyIJ-00039P-1V for qemu-devel@nongnu.org; Thu, 28 Jul 2016 23:17:03 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (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 B095A3F725; Fri, 29 Jul 2016 03:17:02 +0000 (UTC) Received: from redhat.com (vpn1-4-254.ams2.redhat.com [10.36.4.254]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6T3H0Dx026483; Thu, 28 Jul 2016 23:17:01 -0400 Date: Fri, 29 Jul 2016 06:17:00 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1469762011-7902-34-git-send-email-mst@redhat.com> References: <1469762011-7902-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1469762011-7902-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 29 Jul 2016 03:17:02 +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] [PULL 33/41] 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: Peter Maydell , Paolo Bonzini , =?iso-8859-1?Q?Marc-Andr=E9?= Lureau 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 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- 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 0ea9eac..ee7e554 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; @@ -159,6 +160,13 @@ void qemu_chr_disconnect(CharDriverState *chr); void qemu_chr_cleanup(void); /** + * @qemu_chr_wait_connected: + * + * Wait for characted backend to be connected. + */ +int qemu_chr_wait_connected(CharDriverState *chr, Error **errp); + +/** * @qemu_chr_new_noreplay: * * Create a new character backend from a URI. diff --git a/qemu-char.c b/qemu-char.c index 1274f50..6eba615 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;