From patchwork Tue Jul 12 02:13:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Li X-Patchwork-Id: 12914458 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 134BEC433EF for ; Tue, 12 Jul 2022 02:21:23 +0000 (UTC) Received: from localhost ([::1]:51318 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oB5Wc-0001jW-48 for qemu-devel@archiver.kernel.org; Mon, 11 Jul 2022 22:21:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37382) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oB5Pe-0000vq-RF; Mon, 11 Jul 2022 22:14:12 -0400 Received: from mail-pl1-x62f.google.com ([2607:f8b0:4864:20::62f]:35769) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oB5Pd-0007zK-Aa; Mon, 11 Jul 2022 22:14:10 -0400 Received: by mail-pl1-x62f.google.com with SMTP id g13so1089565plh.2; Mon, 11 Jul 2022 19:14:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hPoBlU6VEZ9/MBaZgZCAm+WFSPnS8MEgQJKdwtPiJww=; b=akr+G9tMYn2cOi2u8YgHSwuPWbYg0ShqDnlaX8j5o+zy+SJEtERJg9EqUqPA/19IZw AV1POeYqmCUQvsgr5yE541hb7Qp0JRaQFIvx8UKqcqeTBEiT1p4w6k3O4AO2lUGA7WXR dcsTakqvgFAG3yxpN8Lp0R5nXLKux8TepBUWhTcqYeLrHbn+A5Klwc0qsBdAVADUsUpe 94oACk3yV4XFT7/7X63MfZ7moWoyA7xyGQkg2tT3QY17lxoI1MblJ/aB3vnviUnLJ+Fj 7D8M814MV+bFdKph6Ix/gLOHkxbL8939K+WIk6R8zfM9oKvjZSbjP7pp1EYZggoAtigr hyUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hPoBlU6VEZ9/MBaZgZCAm+WFSPnS8MEgQJKdwtPiJww=; b=bw/2rOEPRkWOM+yeYBAAeCkinKcde1DFzDwgDz8WBhj6anid6FPXQOfi1FhMcGWAah 6r2e54YnHMEEBpQ8dWIgIYFbzmVOW0v39JcVrz1AU+dRus2nmmZCPio47fOFnrP/Nrem 2RELE3Hx0D7YBgOEJQLlvWp1Iny87FSqQ16rgNc9TV6OetLE/GBQxX3t6lFNLq1/r4VU yCwKPrb0iExHw5FaZB1//3WUf+3t9o9+uVDA5AmbZe2fBZlPzeAAA3l/uAA83aV9zgwl vU2aZoGHiw0/ahREQL/PzRKcF9Pq5AF9AE8WRANB2RJ89pzPXd9U1xVH8izXFGlCmJaY DY4g== X-Gm-Message-State: AJIora+pyEyRXLHFq932VXV5DzJ4XVfXchttcMqvq9qi7VgxD70e4GZa bSrLSnWNxeYp6l9F0/SDdZ+240dEzWcK7jka X-Google-Smtp-Source: AGRyM1s6hYKYIg4JStjdBFTWXYTK5HeavaV2pUjmY0PdeO9rKBfkl9thep2yc1yGEiKO2CMa8QqD3g== X-Received: by 2002:a17:90b:4c48:b0:1ef:c839:c68c with SMTP id np8-20020a17090b4c4800b001efc839c68cmr1503260pjb.233.1657592047381; Mon, 11 Jul 2022 19:14:07 -0700 (PDT) Received: from roots.. ([106.84.131.214]) by smtp.gmail.com with ESMTPSA id k22-20020aa79736000000b00528f9597fb3sm5430251pfg.197.2022.07.11.19.14.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Jul 2022 19:14:07 -0700 (PDT) From: Sam Li To: qemu-devel@nongnu.org Cc: damien.lemoal@opensource.wdc.com, Markus Armbruster , dmitry.fomichev@wdc.com, Stefan Hajnoczi , Hanna Reitz , qemu-block@nongnu.org, Eric Blake , Kevin Wolf , Fam Zheng , hare@suse.de, Sam Li Subject: [RFC v4 4/9] file-posix: introduce get_sysfs_str_val for device zoned model. Date: Tue, 12 Jul 2022 10:13:40 +0800 Message-Id: <20220712021345.8530-5-faithilikerun@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220712021345.8530-1-faithilikerun@gmail.com> References: <20220712021345.8530-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=faithilikerun@gmail.com; helo=mail-pl1-x62f.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Sam Li --- block/file-posix.c | 60 ++++++++++++++++++++++++++++++++++++ include/block/block-common.h | 4 +-- 2 files changed, 62 insertions(+), 2 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index 3161d39ea4..42708012ff 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1279,6 +1279,65 @@ out: #endif } +/* + * Convert the zoned attribute file in sysfs to internal value. + */ +static zone_model get_sysfs_str_val(int fd, struct stat *st) { +#ifdef CONFIG_LINUX + char buf[32]; + char *sysfspath = NULL; + int ret, offset; + int sysfd = -1; + + if (S_ISCHR(st->st_mode)) { + if (ioctl(fd, SG_GET_SG_TABLESIZE, &ret) == 0) { + return ret; + } + return -ENOTSUP; + } + + if (!S_ISBLK(st->st_mode)) { + return -ENOTSUP; + } + + sysfspath = g_strdup_printf("/sys/dev/block/%u:%u/queue/zoned", + major(st->st_rdev), minor(st->st_rdev)); + sysfd = open(sysfspath, O_RDONLY); + if (sysfd == -1) { + ret = -errno; + goto out; + } + offset = 0; + do { + ret = read(sysfd, buf + offset, sizeof(buf) - 1 + offset); + if (ret > 0) { + offset += ret; + } + } while (ret == -1); + /* The file is ended with '\n' */ + if (buf[ret - 1] == '\n') { + buf[ret - 1] = '\0'; + } + + if (strcmp(buf, "host-managed") == 0) { + return BLK_Z_HM; + } else if (strcmp(buf, "host-aware") == 0) { + return BLK_Z_HA; + } else { + return -ENOTSUP; + } + +out: + if (sysfd != -1) { + close(sysfd); + } + g_free(sysfspath); + return ret; +#else + return -ENOTSUP; +#endif +} + static int hdev_get_max_segments(int fd, struct stat *st) { return get_sysfs_long_val(fd, st, "max_segments"); } @@ -1885,6 +1944,7 @@ static int handle_aiocb_zone_mgmt(void *opaque) { int64_t len = aiocb->aio_nbytes; zone_op op = aiocb->zone_mgmt.op; + zone_model mod; struct blk_zone_range range; const char *ioctl_name; unsigned long ioctl_op; diff --git a/include/block/block-common.h b/include/block/block-common.h index 78cddeeda5..35e00afe8e 100644 --- a/include/block/block-common.h +++ b/include/block/block-common.h @@ -56,8 +56,8 @@ typedef enum zone_op { } zone_op; typedef enum zone_model { - BLK_Z_HM, - BLK_Z_HA, + BLK_Z_HM = 0x1, + BLK_Z_HA = 0x2, } zone_model; typedef enum BlkZoneCondition {