From patchwork Thu Aug 15 14:49:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alex_Benn=C3=A9e?= X-Patchwork-Id: 13764862 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 EEACAC3DA7F for ; Thu, 15 Aug 2024 14:53:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sebnH-0004Bn-JG; Thu, 15 Aug 2024 10:49:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sebn6-0003eA-5n for qemu-devel@nongnu.org; Thu, 15 Aug 2024 10:49:29 -0400 Received: from mail-ed1-x52d.google.com ([2a00:1450:4864:20::52d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sebn4-0000EG-61 for qemu-devel@nongnu.org; Thu, 15 Aug 2024 10:49:27 -0400 Received: by mail-ed1-x52d.google.com with SMTP id 4fb4d7f45d1cf-5bec78c3f85so252779a12.1 for ; Thu, 15 Aug 2024 07:49:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1723733365; x=1724338165; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ANsPiSjLHElnluRHF+jBoUXCzn/4iakx0mEan1/xlMw=; b=LaS1yfGj90UbOSMgL8UrbN8fGP2CD9tSFDloBHATuizj9n3ifGOiFFcgVVPxpAWq5A 0Sn/kbaYOjrmlpOPR8JAK0WdcXtwZCH7Qieq4RYaQVALqG12lmQjc0ktA8LOK7wVTG3Q IMVjdeCWbJcAj4484Jc49hz9y6F3iQ6sOZhd4Y/XXP5ZtEKDoGTTixDRp7idc1J4IQkx N+wkEXVU/Iw3LWRZsMK1aXJ35NQJ2nx8uMk7Uy2MCKKGPBCqN1RSi8pGk1F2rkhSAIPj S5EO/gmGIWr6C1r/6T2yQUzYLfOqUjYs/UWEwwbJzPhhs2BF9NvuswIg0pf6bwdR1TK3 i8Uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723733365; x=1724338165; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ANsPiSjLHElnluRHF+jBoUXCzn/4iakx0mEan1/xlMw=; b=aZG/6n6XMh+SgncLQFSsOkbggj/756FIT+H1nQ6mIbG+leWTdBPn9EyL4XOJbC0ADX w+WsBTI5Lqz+cgrJ+V0wVULvkUhaBLBD3mM2b0CQiqx0Kyzv2NwjyrQ01Kz57yJR47uj Gnzr7T5La+lotQe68CaDtliSd+8SbMPjBwKlyviCIKZpAo0U7NFK6qs7D5Kh+cnSfMni qKikBe882aMf9TpK5B413sqI8oo/YlZmtCLPPpjw+R74aIio1VWaie6T0c7k572k+xPj mHlCXLAM6lrVhEY4gB/unURFN14iFz9rVtPKMWlvFsBtHWGw2AgOG3rYK9GUufu2mySn OpkA== X-Gm-Message-State: AOJu0YznlwXVOj7TvTAOaXDTdxZBJha8W39ZwUtfS8rdUMIrW4XhUwIZ 6R/o+44C8S95iYziRapHupkQxdQ5Q3R+ZQbzqnJFSElL2FSWUoXbClqP4GYo6AI= X-Google-Smtp-Source: AGHT+IFvhkcP2ugHHp8zYDYF7AUd1wBO/1X90Asc+Rxn6YFbhmDAzQc3nh6ezyeAIDijP0iq+agIfw== X-Received: by 2002:a05:6402:360b:b0:5a8:2f2b:d2d3 with SMTP id 4fb4d7f45d1cf-5bea1cb4ef1mr3638752a12.37.1723733364142; Thu, 15 Aug 2024 07:49:24 -0700 (PDT) Received: from draig.lan ([85.9.250.243]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5bebbdfb923sm964129a12.54.2024.08.15.07.49.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 07:49:20 -0700 (PDT) Received: from draig.lan (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id 242AB5FF6C; Thu, 15 Aug 2024 15:49:13 +0100 (BST) From: =?utf-8?q?Alex_Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Nicholas Piggin , =?utf-8?q?Alex_Benn=C3=A9e?= , =?utf-8?q?Marc-Andr?= =?utf-8?q?=C3=A9_Lureau?= , Paolo Bonzini Subject: [PULL 15/21] chardev: set record/replay on the base device of a muxed device Date: Thu, 15 Aug 2024 15:49:05 +0100 Message-Id: <20240815144911.1931487-16-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240815144911.1931487-1-alex.bennee@linaro.org> References: <20240815144911.1931487-1-alex.bennee@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::52d; envelope-from=alex.bennee@linaro.org; helo=mail-ed1-x52d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Nicholas Piggin chardev events to a muxed device don't get recorded because e.g., qemu_chr_be_write() checks whether the base device has the record flag set. This can be seen when replaying a trace that has characters typed into the console, an examination of the log shows they are not recorded. Setting QEMU_CHAR_FEATURE_REPLAY on the base chardev fixes the problem. Reviewed-by: Alex Bennée Signed-off-by: Nicholas Piggin Message-Id: <20240813050638.446172-8-npiggin@gmail.com> Signed-off-by: Alex Bennée Message-Id: <20240813202329.1237572-16-alex.bennee@linaro.org> diff --git a/chardev/char.c b/chardev/char.c index 3c43fb1278..ba847b6e9e 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -615,11 +615,24 @@ ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) return backend; } -Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, - Error **errp) +static void qemu_chardev_set_replay(Chardev *chr, Error **errp) +{ + if (replay_mode != REPLAY_MODE_NONE) { + if (CHARDEV_GET_CLASS(chr)->chr_ioctl) { + error_setg(errp, "Replay: ioctl is not supported " + "for serial devices yet"); + return; + } + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); + replay_register_char_driver(chr); + } +} + +static Chardev *__qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, + bool replay, Error **errp) { const ChardevClass *cc; - Chardev *chr = NULL; + Chardev *base = NULL, *chr = NULL; ChardevBackend *backend = NULL; const char *name = qemu_opt_get(opts, "backend"); const char *id = qemu_opts_id(opts); @@ -657,11 +670,11 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, chr = qemu_chardev_new(bid ? bid : id, object_class_get_name(OBJECT_CLASS(cc)), backend, context, errp); - if (chr == NULL) { goto out; } + base = chr; if (bid) { Chardev *mux; qapi_free_ChardevBackend(backend); @@ -681,11 +694,25 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, out: qapi_free_ChardevBackend(backend); g_free(bid); + + if (replay && base) { + /* RR should be set on the base device, not the mux */ + qemu_chardev_set_replay(base, errp); + } + return chr; } -Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, - bool permit_mux_mon, GMainContext *context) +Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, + Error **errp) +{ + /* XXX: should this really not record/replay? */ + return __qemu_chr_new_from_opts(opts, context, false, errp); +} + +static Chardev *__qemu_chr_new(const char *label, const char *filename, + bool permit_mux_mon, GMainContext *context, + bool replay) { const char *p; Chardev *chr; @@ -693,14 +720,22 @@ Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, Error *err = NULL; if (strstart(filename, "chardev:", &p)) { - return qemu_chr_find(p); + chr = qemu_chr_find(p); + if (replay) { + qemu_chardev_set_replay(chr, &err); + if (err) { + error_report_err(err); + return NULL; + } + } + return chr; } opts = qemu_chr_parse_compat(label, filename, permit_mux_mon); if (!opts) return NULL; - chr = qemu_chr_new_from_opts(opts, context, &err); + chr = __qemu_chr_new_from_opts(opts, context, replay, &err); if (!chr) { error_report_err(err); goto out; @@ -722,24 +757,18 @@ out: return chr; } +Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, + bool permit_mux_mon, GMainContext *context) +{ + return __qemu_chr_new(label, filename, permit_mux_mon, context, false); +} + static Chardev *qemu_chr_new_permit_mux_mon(const char *label, const char *filename, bool permit_mux_mon, GMainContext *context) { - Chardev *chr; - chr = qemu_chr_new_noreplay(label, filename, permit_mux_mon, context); - if (chr) { - if (replay_mode != REPLAY_MODE_NONE) { - qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); - } - if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { - error_report("Replay: ioctl is not supported " - "for serial devices yet"); - } - replay_register_char_driver(chr); - } - return chr; + return __qemu_chr_new(label, filename, permit_mux_mon, context, true); } Chardev *qemu_chr_new(const char *label, const char *filename,