From patchwork Mon Mar 18 15:46:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 13595470 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 040DBC54E6A for ; Mon, 18 Mar 2024 15:47:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rmFCw-0003F5-Qo; Mon, 18 Mar 2024 11:47:26 -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 1rmFCt-0003CC-Dj for qemu-devel@nongnu.org; Mon, 18 Mar 2024 11:47:23 -0400 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rmFCm-0007tR-K8 for qemu-devel@nongnu.org; Mon, 18 Mar 2024 11:47:23 -0400 Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-6e704078860so1812006b3a.0 for ; Mon, 18 Mar 2024 08:47:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1710776833; x=1711381633; 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=zYd02SLfgP/LCWG+Mrru0HvWw0TZYZU2hsjtTtlA/n0=; b=A3hpw+62g8JTeGjhd2syXQTIG5zkJqqHAhwQsrO27rM7WtFm51xZRQ1eHtFpwgVXpb ywwL3RMAfIz1WFhOFg5AlN4DGYjUEf5UkxhJoqfxAgTXQvH6+Qlw5HFuOCywoSJsXrUE 8lg9YEAb4yINbvRbj4tTEgbKSGWG2qZ1ahPdI1VRu729Fs2BD3NtnK3KOkEe+r40sBdW UcIlSi5Sph/Y6165aN+8/0f+0AFnrpNPZM+wfyiYqtXIj/3AK6WjQbmuGWYMpKzlxNLJ obrZP99pOFhD0/HGKpIYm/v1BxJBsJiS+/DmBXHgoyx4F3ayj70LDwDRKaIRKFcCn/0g PaJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710776833; x=1711381633; 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=zYd02SLfgP/LCWG+Mrru0HvWw0TZYZU2hsjtTtlA/n0=; b=DxRjXjOnaBt+3l9tcuxx3uuUin3pdu8UjsZd9BbBYaGSJXDW+rYTzw92q+UTdLEhgW Caxi4Tlnv/wRLnzjGBAfjIU4qZXeThLdEe+fa+edcW28O1PSfDt3Lcyb4AUW7gsWPE4w NPezLojQMf6vg0VDJunE8r5oV217sQgg5V5f7DdCg7dkpKH4ay+9QSI5gDUrh9as+sT+ hBBPalZe1DaYIP1C5LghJ9WwD4P748+tWLMnLvFS1WSMHEcd37U2z3rk9YRGP/Hoc4nq uCxAO2RJcioQqXK5n54//Kri27F6Bfjpgyz/LHt2adukt9IqJtDgV3CQnJTBW3NxaRcS tSWw== X-Gm-Message-State: AOJu0YyzTlL2+OYjFABjX3aE1Ws5EStN1bUinbCtcS1BlV9L0Q8i10Hk JEom3qb5xvQ+6GLp8/jvCBOU8TmxQXlOA5qq/KfQM2RVthsunRTif+rAp/AoWZs= X-Google-Smtp-Source: AGHT+IEKuRcuYR7c6NU7hrI0O/CSDi2bOSbcQ4DZEZW6z9T0qG3B+8JsuJliYd635ZlBOEVTEzvo7g== X-Received: by 2002:a05:6a20:3d12:b0:1a3:63f4:104a with SMTP id y18-20020a056a203d1200b001a363f4104amr3484137pzi.13.1710776832897; Mon, 18 Mar 2024 08:47:12 -0700 (PDT) Received: from wheely.local0.net ([118.208.155.46]) by smtp.gmail.com with ESMTPSA id v22-20020a634816000000b005dc26144d96sm7332108pga.75.2024.03.18.08.47.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Mar 2024 08:47:12 -0700 (PDT) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?utf-8?q?Philippe_Mathieu-Dau?= =?utf-8?q?d=C3=A9?= , Richard Henderson , =?utf-8?q?Alex_Benn=C3=A9?= =?utf-8?q?e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal , Michael Tokarev Subject: [PATCH v5 07/24] chardev: set record/replay on the base device of a muxed device Date: Tue, 19 Mar 2024 01:46:04 +1000 Message-ID: <20240318154621.2361161-8-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240318154621.2361161-1-npiggin@gmail.com> References: <20240318154621.2361161-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=npiggin@gmail.com; helo=mail-pf1-x429.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=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 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. Signed-off-by: Nicholas Piggin Reviewed-by: Alex Bennée --- chardev/char.c | 71 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 50 insertions(+), 21 deletions(-) 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,