From patchwork Tue Jul 26 16:10:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Sistare X-Patchwork-Id: 12929489 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0B794C00140 for ; Tue, 26 Jul 2022 16:31:29 +0000 (UTC) Received: from localhost ([::1]:53210 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oGNSx-0003b7-0w for qemu-devel@archiver.kernel.org; Tue, 26 Jul 2022 12:31:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35280) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGNA4-0003PH-Di for qemu-devel@nongnu.org; Tue, 26 Jul 2022 12:11:56 -0400 Received: from mx0a-00069f02.pphosted.com ([205.220.165.32]:7536) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGNA2-0006H4-2g for qemu-devel@nongnu.org; Tue, 26 Jul 2022 12:11:56 -0400 Received: from pps.filterd (m0246627.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 26QFnMFT026393; Tue, 26 Jul 2022 16:11:41 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2022-7-12; bh=d9YQm01zhlAKelUEkg9PtJXEYEmRHSGN1zF3T3YRxfM=; b=M+H9KG06P5gI9zuvfZNWGVNIiwZALyo5z4Kjz4a+HhHNB2yjAKQWZisu9gxdgmUCtfKT 63/S6Qn9fkwDgqBl6hJXODGipiiNwMtfBygkVpKFlPo2udoiNxTM22MdicSa8c2azDxx sEGJybUolfaP6CWzTYJWmdjsDeFXvC5KyCJK2leITVUa5UYCYEOwLKPQZMR41QhdAK08 EbyLKgn2m4uUvN/GLWxZKSmdaHbB1dqQjMb5TBiQkXondCQwlsEjrWB0HH7ly0IWCj5l IZJ9hEXok3kWDi1WI4XnHtw5F7aox3TY/3GuIZPRRBe3/+7EeIqoW+shIZtyEgXcw7fL 4Q== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3hg94gevyq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Jul 2022 16:11:41 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.5/8.17.1.5) with ESMTP id 26QEvo8D006379; Tue, 26 Jul 2022 16:11:40 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3hh65bq2n2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Jul 2022 16:11:40 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 26QG5uTP023334; Tue, 26 Jul 2022 16:11:39 GMT Received: from ca-dev63.us.oracle.com (ca-dev63.us.oracle.com [10.211.8.221]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3hh65bq0y5-39; Tue, 26 Jul 2022 16:11:39 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Alex_Benn=C3=A9e?= , "Dr. David Alan Gilbert" , "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , "Daniel P. Berrange" , Juan Quintela , Markus Armbruster , Eric Blake , Jason Zeng , Zheng Chuan , Steve Sistare , Mark Kanda , Guoyi Tu , Peter Maydell , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Igor Mammedov , David Hildenbrand , John Snow , Peng Liang Subject: [PATCH V9 38/46] chardev: cpr for pty Date: Tue, 26 Jul 2022 09:10:35 -0700 Message-Id: <1658851843-236870-39-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> References: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-26_04,2022-07-26_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 phishscore=0 spamscore=0 mlxlogscore=999 suspectscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207260063 X-Proofpoint-GUID: SLolOr_Hi0kQxw921kyQZ2ptsCqaAJ9e X-Proofpoint-ORIG-GUID: SLolOr_Hi0kQxw921kyQZ2ptsCqaAJ9e Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Save and restore pty descriptors across cpr-exec. Signed-off-by: Steve Sistare --- chardev/char-pty.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/chardev/char-pty.c b/chardev/char-pty.c index 53f25c6..5707b13 100644 --- a/chardev/char-pty.c +++ b/chardev/char-pty.c @@ -29,6 +29,7 @@ #include "qemu/sockets.h" #include "qemu/error-report.h" #include "qemu/module.h" +#include "migration/cpr-state.h" #include "qemu/qemu-print.h" #include "chardev/char-io.h" @@ -190,6 +191,9 @@ static void char_pty_finalize(Object *obj) Chardev *chr = CHARDEV(obj); PtyChardev *s = PTY_CHARDEV(obj); + if (chr->cpr_enabled) { + cpr_delete_fd(chr->label, 0); + } pty_chr_state(chr, 0); object_unref(OBJECT(s->ioc)); pty_chr_timer_cancel(s); @@ -317,12 +321,20 @@ static void char_pty_open(Chardev *chr, char pty_name[PATH_MAX]; char *name; + master_fd = cpr_find_fd(chr->label, 0); + if (master_fd >= 0) { + chr->filename = g_strdup_printf("pty:unknown"); + goto have_fd; + } + master_fd = qemu_openpty_raw(&slave_fd, pty_name); if (master_fd < 0) { error_setg_errno(errp, errno, "Failed to create PTY"); return; } - + if (chr->cpr_enabled) { + cpr_save_fd(chr->label, 0, master_fd); + } close(slave_fd); if (!g_unix_set_fd_nonblocking(master_fd, true, NULL)) { error_setg_errno(errp, errno, "Failed to set FD nonblocking"); @@ -333,6 +345,8 @@ static void char_pty_open(Chardev *chr, qemu_printf("char device redirected to %s (label %s)\n", pty_name, chr->label); +have_fd: + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR); s = PTY_CHARDEV(chr); s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); name = g_strdup_printf("chardev-pty-%s", chr->label);