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[37.6.1.138]) by smtp.gmail.com with ESMTPSA id cf15-20020a0564020b8f00b0055c903e61easm484663edb.82.2024.01.23.07.35.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jan 2024 07:35:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1706024135; x=1706628935; 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=XyDmVSFodOYjD4FiRaNUUzftXSYkP1NTnuHNRCor0SU=; b=CIS43d6FXvqw7jlMOmse29woBUx7amPXUP1qkRWixpqvAJC42nG3PAYiRorIq3WNWB XyjNnqybHhgWkLnUZNzjY0N/ktMkM6gjLYAZJ4Q8fZhESiIXTaJEWfyiA9y88W3I5/sx JXjzuQAz7AEN8N3MZ9hqNwgmYl5CaWoJHqj5py+anbmvVKno+jGwjXg62RvRAiy7tv6y OZj+g9nK1gPylmyYHRwH72kP0F40XuxoDBTprArJL+i+tYeYYySB7aH54f+0Czl5m/VY T8SRbaL8IPx24XcBbxb7AaLtOY6nJ9QrSvSh3/m64I2ohjtCzvoVV9M9pnNdKblpJbdX w5VA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706024135; x=1706628935; 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=XyDmVSFodOYjD4FiRaNUUzftXSYkP1NTnuHNRCor0SU=; b=kQDKObQfuSuE3WRWIaYfq1rioGl5QKG3roPjZJcTH6aA7nP6Rj7VymuFBb9+gqjwbp 5c78mgPi/0MgW3B4RDaDai8R+o5lwoc12teJt16FbDOEBtrI6EJO+xqiKW70bRKuFWiK hqgafUQ7fG6fTSt80DB13DRuH2cnSCQHdG6TSQgxz4RKrurPRlRNuogDJqT9SjkKX6dF rzIpZy7sLPHrKzHKM7cJnTXV2c+Db0wqwwCc4KNMEvZNgzw3E2zpnMs/idRMSU2PHocr Tspnno7N+A68nWhxUuqa13kqjxL7kWFn+pQVhX2c6HJmdKEHfbBFjY5IHZ+wgVVxhTgc Mqsw== X-Gm-Message-State: AOJu0YwCIgXe8MiViMgfOvoBxkumBC161HN7nBr3Ed0NmoEOhhv7DxCH xJDEdZFiVCw+1X0/8ED4tGvTosfEreuBWDf42fBE/BmTXhDsnJ5P1EgYqA7mgnvZb5g6IYbgtQr vRHA= X-Google-Smtp-Source: AGHT+IHC7ijLeFSdFJmKLFx91WgyjZEoJBG8XtPwyBX57dmNybtyc4js6ymQgY0++9kzWUQDGxdn4w== X-Received: by 2002:aa7:d9c4:0:b0:55a:60ca:fe35 with SMTP id v4-20020aa7d9c4000000b0055a60cafe35mr953263eds.56.1706024135520; Tue, 23 Jan 2024 07:35:35 -0800 (PST) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost Subject: [PATCH v2 1/2] hw/core/qdev.c: add qdev_get_human_name() Date: Tue, 23 Jan 2024 17:35:30 +0200 Message-Id: <5fb58797083e7786fd3556d2c247609565b8637d.1706023972.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::535; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-ed1-x535.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1706024182210100003 Add a simple method to return some kind of human readable identifier for use in error messages. Signed-off-by: Manos Pitsidianakis Reviewed-by: Stefan Hajnoczi --- hw/core/qdev.c | 8 ++++++++ include/hw/qdev-core.h | 14 ++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/hw/core/qdev.c b/hw/core/qdev.c index 43d863b0c5..c68d0f7c51 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -879,6 +879,14 @@ Object *qdev_get_machine(void) return dev; } =20 +char *qdev_get_human_name(DeviceState *dev) +{ + g_assert(dev !=3D NULL); + + return dev->id ? + g_strdup(dev->id) : object_get_canonical_path(OBJECT(dev)); +} + static MachineInitPhase machine_phase; =20 bool phase_check(MachineInitPhase phase) diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 151d968238..66338f479f 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -993,6 +993,20 @@ const char *qdev_fw_name(DeviceState *dev); void qdev_assert_realized_properly(void); Object *qdev_get_machine(void); =20 +/** + * qdev_get_human_name() - Return a human-readable name for a device + * @dev: The device. Must be a valid and non-NULL pointer. + * + * .. note:: + * This function is intended for user friendly error messages. + * + * Returns: A newly allocated string containing the device id if not null, + * else the object canonical path. + * + * Use g_free() to free it. + */ +char *qdev_get_human_name(DeviceState *dev); + /* FIXME: make this a link<> */ bool qdev_set_parent_bus(DeviceState *dev, BusState *bus, Error **errp); =20 --=20 =CE=B3=CE=B1=E1=BF=96=CE=B1 =CF=80=CF=85=CF=81=CE=AF =CE=BC=CE=B9=CF=87=CE= =B8=CE=AE=CF=84=CF=89 From nobody Tue Nov 26 16:16:41 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1706024192; cv=none; d=zohomail.com; s=zohoarc; b=W5/T5WU4YV5xA4odzTpvYBA3Sh1rNfX+78a146oOJLa0ssM9y7hhxWplM1DfNSSSSk1TuJcicAXg8KibGtA6QAWj0wzDvcZ7LpJ2swgNbJgkzCRBW79ubofK8RFgn1vH1gmpErJIYK3h/VDFt97mkdJEb8L8sm1pRYpxUhT6Srs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1706024192; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=fuvhd4XqM90NTbdIC1Jw10LgMGZUekSAlaXFP98Jiu8=; b=HXcLPjmtaosS3WQN83yZZwE63p0OumOaAg0mr6/3exsZz7UdJ6jAYzgIpQcooFzWNSMLptSXUCwrwFRJLrOR1VrRtP8tIVQa70jKhLUc93Riz7us1Hq34d/vWXpOK6SwOFiSM7UF6bwxYMKp5bn2E3MOXlZ/4CtpiNYD+Qw9zuQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1706024192576456.2788662504107; Tue, 23 Jan 2024 07:36:32 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSIod-0005vn-98; Tue, 23 Jan 2024 10:35:57 -0500 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 1rSIoS-0005qd-8x for qemu-devel@nongnu.org; Tue, 23 Jan 2024 10:35:44 -0500 Received: from mail-ed1-x529.google.com ([2a00:1450:4864:20::529]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rSIoN-0007E5-9s for qemu-devel@nongnu.org; Tue, 23 Jan 2024 10:35:43 -0500 Received: by mail-ed1-x529.google.com with SMTP id 4fb4d7f45d1cf-55a685e6299so4609453a12.2 for ; Tue, 23 Jan 2024 07:35:38 -0800 (PST) Received: from localhost.localdomain (adsl-138.37.6.1.tellas.gr. [37.6.1.138]) by smtp.gmail.com with ESMTPSA id cf15-20020a0564020b8f00b0055c903e61easm484663edb.82.2024.01.23.07.35.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jan 2024 07:35:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1706024137; x=1706628937; 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=fuvhd4XqM90NTbdIC1Jw10LgMGZUekSAlaXFP98Jiu8=; b=M6yqYQb67Xq+QSXxsUcBJDNAiN+7axLz5fpzl/w9ccj0aCwE9Hrwc1dEpXSbY4Vjom VODA8e6mDlW31hFhfFJ0vuV7GQrteZwW7SHPh1JTszOgbM/oQN/6smrO5PWXOvVSc3WP hoaqoeiBXyJyup2AG+dLPZMERuvc57pHQC9mYR0k4+EoFLoPhziEwXr3BHFkpD7+5mNi iS6ufe3pH4b5fRdYnFy/4EjyirfHYZ4pAxcGzk1UfAvH/Ur1Hr6/Wl3ztm+gk0FQPOfU vmSxNg/nd9GZuaoa2gbhCMj4OOB6Kd9PavZ8W8L772+RBlM1VlQ/DaCBefCoi6sKmF83 nMxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706024137; x=1706628937; 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=fuvhd4XqM90NTbdIC1Jw10LgMGZUekSAlaXFP98Jiu8=; b=Yj2AjNtkruZlcpE/lKsNwkUU3HPmGZrnZ8vwmldxh5XV300Zr0fVh2vqLK2PIwXyYd Ya8eDKgeNK+FPEf2DfHF5/mXIy0eO09cuh/OZOy3N1ky+uw/BBzyw5cNIRPVUz3Pu+Ef pjAW1+hCeQj4xUhi8Ntx+gxxNHYxwKcxSmiAc862ou3SPO5ivLNePjIaB/C3LzBTA+dx hH8TPUQFL/lpjFkFZwSbzaG03KipYdITsFVJypuunnx2sPGbXSiGiqGa5JB0SxtFRNGR rU5IjI6jrqTXGR7g0WREayt8AJL3T6iXJtuoLFKGNCUG8V9iFO0LBWWPytCNZZYKZuRy 7a8g== X-Gm-Message-State: AOJu0YxYrdYYuFoY+uZ/nqoHx9h3yT8AxcnyYjyHk6G+4OFcC/3/dw+b J3HWeBVNlgWlm5+ivOWrAW50jso/xt+OgvmbDClTUqSdE1UY6MWgGz06Ngo22fqf55+zxWSaxgP DPUI= X-Google-Smtp-Source: AGHT+IEyskmhHyhEaI1N3j5C26niVe/i0V8fKufmSg9iAiyv7ay4uRPG+dZbe3yCZnvXOmcL5OUp+w== X-Received: by 2002:a05:6402:1512:b0:55c:96da:16cd with SMTP id f18-20020a056402151200b0055c96da16cdmr304978edw.61.1706024137058; Tue, 23 Jan 2024 07:35:37 -0800 (PST) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , John Snow , Kevin Wolf , Hanna Reitz , Alistair Francis Subject: [PATCH v2 2/2] hw/block/block.c: improve confusing blk_check_size_and_read_all() error Date: Tue, 23 Jan 2024 17:35:31 +0200 Message-Id: <8e7eb17fbd39d746079e2bb2525b0ed8c97cca33.1706023972.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::529; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-ed1-x529.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1706024194225100003 In cases where a device tries to read more bytes than the block device contains, the error is vague: "device requires X bytes, block backend provides Y bytes". This patch changes the errors of this function to include the block backend name, the device id and device type name where appropriate. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Manos Pitsidianakis --- hw/block/block.c | 25 +++++++++++++++---------- hw/block/m25p80.c | 3 ++- hw/block/pflash_cfi01.c | 4 ++-- hw/block/pflash_cfi02.c | 2 +- include/hw/block/block.h | 4 ++-- 5 files changed, 22 insertions(+), 16 deletions(-) diff --git a/hw/block/block.c b/hw/block/block.c index 9f52ee6e72..624389d62d 100644 --- a/hw/block/block.c +++ b/hw/block/block.c @@ -54,29 +54,30 @@ static int blk_pread_nonzeroes(BlockBackend *blk, hwadd= r size, void *buf) * BDRV_REQUEST_MAX_BYTES. * On success, return true. * On failure, store an error through @errp and return false. - * Note that the error messages do not identify the block backend. - * TODO Since callers don't either, this can result in confusing - * errors. + * * This function not intended for actual block devices, which read on * demand. It's for things like memory devices that (ab)use a block * backend to provide persistence. */ -bool blk_check_size_and_read_all(BlockBackend *blk, void *buf, hwaddr size, - Error **errp) +bool blk_check_size_and_read_all(BlockBackend *blk, DeviceState *dev, + void *buf, hwaddr size, Error **errp) { int64_t blk_len; int ret; + g_autofree char *dev_id =3D NULL; =20 blk_len =3D blk_getlength(blk); if (blk_len < 0) { error_setg_errno(errp, -blk_len, - "can't get size of block backend"); + "can't get size of %s block backend", blk_name(bl= k)); return false; } if (blk_len !=3D size) { - error_setg(errp, "device requires %" HWADDR_PRIu " bytes, " - "block backend provides %" PRIu64 " bytes", - size, blk_len); + dev_id =3D qdev_get_human_name(dev); + error_setg(errp, "%s device with id=3D'%s' requires %" HWADDR_PRIu + " bytes, %s block backend provides %" PRIu64 " bytes", + object_get_typename(OBJECT(dev)), dev_id, size, + blk_name(blk), blk_len); return false; } =20 @@ -89,7 +90,11 @@ bool blk_check_size_and_read_all(BlockBackend *blk, void= *buf, hwaddr size, assert(size <=3D BDRV_REQUEST_MAX_BYTES); ret =3D blk_pread_nonzeroes(blk, size, buf); if (ret < 0) { - error_setg_errno(errp, -ret, "can't read block backend"); + dev_id =3D qdev_get_human_name(dev); + error_setg_errno(errp, -ret, "can't read %s block backend" + "for %s device with id=3D'%s'", + blk_name(blk), object_get_typename(OBJECT(dev)), + dev_id); return false; } return true; diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index 26ce895628..0a12030a3a 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -1617,7 +1617,8 @@ static void m25p80_realize(SSIPeripheral *ss, Error *= *errp) trace_m25p80_binding(s); s->storage =3D blk_blockalign(s->blk, s->size); =20 - if (!blk_check_size_and_read_all(s->blk, s->storage, s->size, errp= )) { + if (!blk_check_size_and_read_all(s->blk, DEVICE(s), + s->storage, s->size, errp)) { return; } } else { diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index f956f8bcf7..1bda8424b9 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -848,8 +848,8 @@ static void pflash_cfi01_realize(DeviceState *dev, Erro= r **errp) } =20 if (pfl->blk) { - if (!blk_check_size_and_read_all(pfl->blk, pfl->storage, total_len, - errp)) { + if (!blk_check_size_and_read_all(pfl->blk, dev, pfl->storage, + total_len, errp)) { vmstate_unregister_ram(&pfl->mem, DEVICE(pfl)); return; } diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index 6fa56f14c0..2314142373 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -902,7 +902,7 @@ static void pflash_cfi02_realize(DeviceState *dev, Erro= r **errp) } =20 if (pfl->blk) { - if (!blk_check_size_and_read_all(pfl->blk, pfl->storage, + if (!blk_check_size_and_read_all(pfl->blk, dev, pfl->storage, pfl->chip_len, errp)) { vmstate_unregister_ram(&pfl->orig_mem, DEVICE(pfl)); return; diff --git a/include/hw/block/block.h b/include/hw/block/block.h index 15fff66435..de3946a5f1 100644 --- a/include/hw/block/block.h +++ b/include/hw/block/block.h @@ -88,8 +88,8 @@ static inline unsigned int get_physical_block_exp(BlockCo= nf *conf) =20 /* Backend access helpers */ =20 -bool blk_check_size_and_read_all(BlockBackend *blk, void *buf, hwaddr size, - Error **errp); +bool blk_check_size_and_read_all(BlockBackend *blk, DeviceState *dev, + void *buf, hwaddr size, Error **errp); =20 /* Configuration helpers */ =20 --=20 =CE=B3=CE=B1=E1=BF=96=CE=B1 =CF=80=CF=85=CF=81=CE=AF =CE=BC=CE=B9=CF=87=CE= =B8=CE=AE=CF=84=CF=89