From nobody Mon Feb 9 16:14:34 2026 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=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1659686595; cv=none; d=zohomail.com; s=zohoarc; b=WK256CGJv7a5oAS3Rl7t3Nn8iror8HVx/UsAmcwzTMSM/+rj+QlpHD2HWp+WFzL+HgL9garB4n5UBXSAewdHJ2O6u+iumUq0xB8KlesGVu4jlB07hKPjl8sa8Vkz+wwzBvk853jHzeaMlV3PSZL6utxpmHw06cU3L/9F67ZyGy0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1659686595; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=bDPuAiP4ePtzz22qpEVMqEcyzCUbID81bXO+GFqczYY=; b=MhnQ4fmvfoiziVE4LL6IiYXbqwDAC0cDLNgk4UUKGiTITsKRJjUtKWGaqkKb2zsg5GkxU0f2DUJcP7wrRg56GmQKC+vNN08jp+/jkypdkqxWFY++FCC17Rh54Jtfr2KfYBnj7GTx12fkGiJHhnvTjhoddXQE3yQ94YhGfkWVDXk= 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 1659686595099625.4096952800356; Fri, 5 Aug 2022 01:03:15 -0700 (PDT) Received: from localhost ([::1]:52378 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oJsIc-0006PA-13 for importer@patchew.org; Fri, 05 Aug 2022 04:03:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60442) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJsDs-0002xH-Ih; Fri, 05 Aug 2022 03:58:21 -0400 Received: from mail-pj1-x1031.google.com ([2607:f8b0:4864:20::1031]:33558) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oJsDq-0001vv-T8; Fri, 05 Aug 2022 03:58:20 -0400 Received: by mail-pj1-x1031.google.com with SMTP id f11-20020a17090a4a8b00b001f2f7e32d03so7332143pjh.0; Fri, 05 Aug 2022 00:58:16 -0700 (PDT) Received: from roots.. ([106.84.130.246]) by smtp.gmail.com with ESMTPSA id z15-20020a170903018f00b0016ee708350bsm2418564plg.14.2022.08.05.00.58.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Aug 2022 00:58:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=bDPuAiP4ePtzz22qpEVMqEcyzCUbID81bXO+GFqczYY=; b=h02+qrcRoxXZgOwTormWYVqwmKyqquWg9hzyvMjkPLWXbhbtPoowSSDrgtPJmGye/+ kywORMHHPVL1n9rxq8NSup+bgGTqh7/DBgWrVL7vJhasxVGVV9SIy8hweD0xVnneH4ym pSuW6xUHmfRlNCH7i6O74DS1qyhV0PInX31sigStmOpX1+dmM4qzTh4PElcV3TYwIJGq YcNbTxwqZzOWRWzh4shq643eB4tFK4g6wF1TQH3SeSgYRKTgbHstFEXuTqBeI8UNpOaH 2dZ+0d0HsegeRmZJla5i1phiUkJkMlud8v7IbNu9WC08L529o1e2Hoe+ComHqWK2fCpa UZ/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=bDPuAiP4ePtzz22qpEVMqEcyzCUbID81bXO+GFqczYY=; b=PbonOOq0q8lriUJazLHw8I52UEqaHfSOJGmQJYkx87Nq+vldmGw7AItuKddSVWplZD cKvEr41opENpsWlESmbHV7otIGBlfEs0H07RYCKmfNo9FN8DhFMw8CvvXeLi0RuaHQwh Y8VURflo8LXHAW+bSFBNtyCioESDLGmtG4yuyhgCn7BV46IioDnJsF8tgTEKCrFbp2xk WuGFph7KvUgS077yFHA3YglbD5lL+ZXZjUzee/CnZ1ltDmbftHtzP7eY7Aogkzh19URk 6C+idvawiZ1fQBK0hrpxXWrhXzy8X0iThS7f4q4q+5guOhhyDA+gnSqOjLy9Awr4U+N8 //AQ== X-Gm-Message-State: ACgBeo0r0+snH0JWtb+pf0i47ZxcjaeiMitghaFZWm6+PMUqvcBnIS4q LyRXOw6Eu6/x5OGIQoylzH+/1YE0r/Vmzw== X-Google-Smtp-Source: AA6agR7qR2fa3U3vSWsqPwKBKSScGRKnBpIuh6Rlr9FuRwx1HAaYPeKAOWwCVtdTYFEM5PGQHuUOjw== X-Received: by 2002:a17:90b:1e11:b0:1f4:ee94:6236 with SMTP id pg17-20020a17090b1e1100b001f4ee946236mr6458422pjb.63.1659686295654; Fri, 05 Aug 2022 00:58:15 -0700 (PDT) From: Sam Li To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, hare@suse.de, Stefan Hajnoczi , dmitry.fomichev@wdc.com, Kevin Wolf , damien.lemoal@opensource.wdc.com, Eric Blake , Fam Zheng , Markus Armbruster , Hanna Reitz , Sam Li Subject: [PATCH v6 3/8] file-posix: introduce get_sysfs_str_val for device zoned model Date: Fri, 5 Aug 2022 15:57:46 +0800 Message-Id: <20220805075751.77499-4-faithilikerun@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220805075751.77499-1-faithilikerun@gmail.com> References: <20220805075751.77499-1-faithilikerun@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::1031; envelope-from=faithilikerun@gmail.com; helo=mail-pj1-x1031.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, 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" X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1659686597175100001 Content-Type: text/plain; charset="utf-8" Use sysfs attribute files to get the string value of device zoned model. Then get_sysfs_zoned_model can convert it to BlockZoneModel type in QEMU. Signed-off-by: Sam Li Reviewed-by: Hannes Reinecke --- block/file-posix.c | 70 ++++++++++++++++++++++++++++++++ include/block/block_int-common.h | 3 ++ 2 files changed, 73 insertions(+) diff --git a/block/file-posix.c b/block/file-posix.c index a40eab64a2..4785203eea 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1264,6 +1264,68 @@ out: #endif } =20 +/* + * Convert the zoned attribute file in sysfs to internal value. + */ +static int get_sysfs_str_val(int fd, struct stat *st, + const char *attribute, + char **val) { +#ifdef CONFIG_LINUX + char *buf =3D NULL; + g_autofree char *sysfspath =3D NULL; + int ret; + size_t len; + + if (!S_ISBLK(st->st_mode)) { + return -ENOTSUP; + } + + sysfspath =3D g_strdup_printf("/sys/dev/block/%u:%u/queue/%s", + major(st->st_rdev), minor(st->st_rdev), + attribute); + ret =3D g_file_get_contents(sysfspath, &buf, &len, NULL); + if (ret =3D=3D -1) { + ret =3D -errno; + return ret; + } + + /* The file is ended with '\n' */ + if (buf[len - 1] =3D=3D '\n') { + buf[len - 1] =3D '\0'; + } + + if (!strncpy(*val, buf, len)) { + ret =3D -errno; + return ret; + } + g_free(buf); + return 0; +#else + return -ENOTSUP; +#endif +} + +static int get_sysfs_zoned_model(int fd, struct stat *st, + BlockZoneModel *zoned) { + g_autofree char *val =3D NULL; + val =3D g_malloc(32); + get_sysfs_str_val(fd, st, "zoned", &val); + if (!val) { + return -ENOTSUP; + } + + if (strcmp(val, "host-managed") =3D=3D 0) { + *zoned =3D BLK_Z_HM; + } else if (strcmp(val, "host-aware") =3D=3D 0) { + *zoned =3D BLK_Z_HA; + } else if (strcmp(val, "none") =3D=3D 0) { + *zoned =3D BLK_Z_NONE; + } else { + return -ENOTSUP; + } + return 0; +} + static int hdev_get_max_segments(int fd, struct stat *st) { int ret; if (S_ISCHR(st->st_mode)) { @@ -1279,6 +1341,8 @@ static void raw_refresh_limits(BlockDriverState *bs, = Error **errp) { BDRVRawState *s =3D bs->opaque; struct stat st; + int ret; + BlockZoneModel zoned; =20 s->needs_alignment =3D raw_needs_alignment(bs); raw_probe_alignment(bs, s->fd, errp); @@ -1316,6 +1380,12 @@ static void raw_refresh_limits(BlockDriverState *bs,= Error **errp) bs->bl.max_hw_iov =3D ret; } } + + ret =3D get_sysfs_zoned_model(s->fd, &st, &zoned); + if (ret < 0) { + zoned =3D BLK_Z_NONE; + } + bs->bl.zoned =3D zoned; } =20 static int check_for_dasd(int fd) diff --git a/include/block/block_int-common.h b/include/block/block_int-com= mon.h index 8947abab76..7f7863cc9e 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -825,6 +825,9 @@ typedef struct BlockLimits { =20 /* maximum number of iovec elements */ int max_iov; + + /* device zone model */ + BlockZoneModel zoned; } BlockLimits; =20 typedef struct BdrvOpBlocker BdrvOpBlocker; --=20 2.37.1