From patchwork Wed Apr 14 01:33:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naohiro Aota X-Patchwork-Id: 12201711 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4402EC43618 for ; Wed, 14 Apr 2021 01:34:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 17CA0613B6 for ; Wed, 14 Apr 2021 01:34:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349082AbhDNBeX (ORCPT ); Tue, 13 Apr 2021 21:34:23 -0400 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:18400 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349037AbhDNBeK (ORCPT ); Tue, 13 Apr 2021 21:34:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1618364030; x=1649900030; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ysMS2Kknxl6RT6GJVQKK3OyY+VYyJdNtAln3ZU9K/js=; b=lUHPbvZj0mZslJ+YzQKFtIMZ361q41QEmGEhU/xL2dbEM1Waz+dyg6y0 moefvVvnQmtDLO8OWMy6MhmKSfEfc26SvdxMI9plsoeZaAoh5Uv8tWwEm L3KHUTd7s+tAY61bDObp2BZGSVYAegcUwm4tdmccd5hUlUcTj90R6mgAF I7NXBEFwOW1aZMxN8bhAmD7MekyCT2xg9yE357vlYyrQvefJ4iPEYE2pq fK+slGJyRnEYocqjkpas02IEwiFWYC5pTqnIaEqLGlz0Q3ZBrrCDy5jXV vsErBM2iZCi2RPJSCR2nKemCt8U6oKNTCC8/nB/2m8jz0+tiJbTs2+NpQ w==; IronPort-SDR: OZm9K9CleR3Wu/4XUvJD9GkJ8fwqmO2tzcR+SMvewoThEsEyIIphj2pBQArZOQ+Nc7rHhCRlNK eHfVIcEdEtdLUaoYI4EuMTmUQqfjgAq2liq0tEZw5irZmf5lsMQxMTJpkaV2wCUsWdVsuLFaDP d1tw5ErqmsjcaQRaCphhGYq3I5vpFx7QZjAP46snY/rzjy4tMYpJW0Lx851m8XqwFCu+M2lprL pEWb5RWFrPv5Znp5b33CXDMGyZ3gxYwI4D+ByatTewmISJXS51cnFFRMuj34soLPGkutDRoblj 7pE= X-IronPort-AV: E=Sophos;i="5.82,221,1613404800"; d="scan'208";a="169210804" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 14 Apr 2021 09:33:47 +0800 IronPort-SDR: t/TVvgCgSiFx+dCUSDnGTaOmDm5JT7tWP7F8ZCm3J1wTwLhDV8ftSZrfqBlIEL21F8Yr88dddH mF9H9/heseL38Q8AvLa1cn+glQqsB1qy37nhPFHPVayXTsnxvLIvVgeNXeFuYtlBOcLue4TsWl dKw21hyzgum0urP0+9/UvQDKwnoSsb9q1FQHea3chCiyONKO9Xte24nJP37I7Pc8Zx/Lbk3YYt lWLiun+tpLx/nEbpJ1C0WuOTLDawb1AvIJ4IXmJ0XkuCS87l1ssdA5CYdjWB5m4eygO/JdBpzY wDJb7rTLJluRbbS83yHvasHz Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2021 18:14:49 -0700 IronPort-SDR: N/cfITB36rmpPLvy1J8sWpHrK8IcoFamkC7dluKdztovi+qnsZXvzw6TFjE4oddjvqQHqN2UJI oJ3PmXIKWbXm4RnLACnmfKJQk4dqa4eTVqCtGFdXNu0ct/9hA+kcvMdWTk20DhIMAmrBetOltw D+GnnqGMh1V30jGRlvwbjKLh5fXdBq+qGks9LEjPPzRy/ElTP8K4dStVwgbXBwtIHP0lub6+uR nkJOC/XqiA2dgYow4TFGO3V+TkMRmgfjoE08ZwHuuNI32WsvDNHER4SGvFZPapc3Mo5vH65Iu5 Iw4= WDCIronportException: Internal Received: from jpf004864.ad.shared (HELO naota-xeon.wdc.com) ([10.225.53.142]) by uls-op-cesaip02.wdc.com with ESMTP; 13 Apr 2021 18:33:46 -0700 From: Naohiro Aota To: Karel Zak Cc: util-linux@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, Damien Le Moal , Johannes Thumshirn , Naohiro Aota Subject: [PATCH v2 3/3] blkid: support zone reset for wipefs Date: Wed, 14 Apr 2021 10:33:39 +0900 Message-Id: <20210414013339.2936229-4-naohiro.aota@wdc.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210414013339.2936229-1-naohiro.aota@wdc.com> References: <20210414013339.2936229-1-naohiro.aota@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org We cannot overwrite superblock magic in a sequential required zone. So, wipefs cannot work as it is. Instead, this commit implements the wiping by zone resetting. Zone resetting must be done only for a sequential write zone. This is checked by is_conventional(). Signed-off-by: Naohiro Aota Reviewed-by: Damien Le Moal Reviewed-by: Johannes Thumshirn --- libblkid/src/probe.c | 79 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 73 insertions(+), 6 deletions(-) diff --git a/libblkid/src/probe.c b/libblkid/src/probe.c index 9d180aab5242..23c3621627d4 100644 --- a/libblkid/src/probe.c +++ b/libblkid/src/probe.c @@ -107,6 +107,7 @@ #include #include #include +#include #include "blkidP.h" #include "all-io.h" @@ -1228,6 +1229,48 @@ int blkid_do_probe(blkid_probe pr) return rc; } +#ifdef HAVE_LINUX_BLKZONED_H +static int is_conventional(blkid_probe pr, uint64_t offset) +{ + struct blk_zone_report *rep = NULL; + size_t rep_size; + int ret; + uint64_t zone_mask; + + if (!pr->zone_size) + return 1; + + rep_size = sizeof(struct blk_zone_report) + sizeof(struct blk_zone); + rep = calloc(1, rep_size); + if (!rep) + return -1; + + zone_mask = ~(pr->zone_size - 1); + rep->sector = (offset & zone_mask) >> 9; + rep->nr_zones = 1; + ret = ioctl(blkid_probe_get_fd(pr), BLKREPORTZONE, rep); + if (ret) { + free(rep); + return -1; + } + + if (rep->zones[0].type == BLK_ZONE_TYPE_CONVENTIONAL) + ret = 1; + else + ret = 0; + + free(rep); + + return ret; +} +#else +static inline int is_conventional(blkid_probe pr __attribute__((__unused__)), + uint64_t offset __attribute__((__unused__))) +{ + return 1; +} +#endif + /** * blkid_do_wipe: * @pr: prober @@ -1267,6 +1310,7 @@ int blkid_do_wipe(blkid_probe pr, int dryrun) const char *off = NULL; size_t len = 0; uint64_t offset, magoff; + bool conventional; char buf[BUFSIZ]; int fd, rc = 0; struct blkid_chain *chn; @@ -1302,6 +1346,11 @@ int blkid_do_wipe(blkid_probe pr, int dryrun) if (len > sizeof(buf)) len = sizeof(buf); + rc = is_conventional(pr, offset); + if (rc < 0) + return rc; + conventional = rc == 1; + DBG(LOWPROBE, ul_debug( "do_wipe [offset=0x%"PRIx64" (%"PRIu64"), len=%zu, chain=%s, idx=%d, dryrun=%s]\n", offset, offset, len, chn->driver->name, chn->idx, dryrun ? "yes" : "not")); @@ -1309,13 +1358,31 @@ int blkid_do_wipe(blkid_probe pr, int dryrun) if (lseek(fd, offset, SEEK_SET) == (off_t) -1) return -1; - memset(buf, 0, len); - if (!dryrun && len) { - /* wipen on device */ - if (write_all(fd, buf, len)) - return -1; - fsync(fd); + if (conventional) { + memset(buf, 0, len); + + /* wipen on device */ + if (write_all(fd, buf, len)) + return -1; + fsync(fd); + } else { +#ifdef HAVE_LINUX_BLKZONED_H + uint64_t zone_mask = ~(pr->zone_size - 1); + struct blk_zone_range range = { + .sector = (offset & zone_mask) >> 9, + .nr_sectors = pr->zone_size >> 9, + }; + + rc = ioctl(fd, BLKRESETZONE, &range); + if (rc < 0) + return -1; +#else + /* Should not reach here */ + assert(0); +#endif + } + pr->flags &= ~BLKID_FL_MODIF_BUFF; /* be paranoid */ return blkid_probe_step_back(pr);