From nobody Mon Feb 9 00:53:58 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 149158261680544.83773244272845; Fri, 7 Apr 2017 09:30:16 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 056903DBDF; Fri, 7 Apr 2017 16:30:15 +0000 (UTC) Received: from colo-mx.corp.redhat.com (unknown [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CC0269B916; Fri, 7 Apr 2017 16:30:14 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 7266A4EBD7; Fri, 7 Apr 2017 16:30:14 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id v37GUCoo018920 for ; Fri, 7 Apr 2017 12:30:12 -0400 Received: by smtp.corp.redhat.com (Postfix) id 582CA189DE; Fri, 7 Apr 2017 16:30:12 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-19.phx2.redhat.com [10.3.116.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 15D66189CB for ; Fri, 7 Apr 2017 16:30:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 056903DBDF Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=libvir-list-bounces@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 056903DBDF From: John Ferlan To: libvir-list@redhat.com Date: Fri, 7 Apr 2017 12:30:04 -0400 Message-Id: <20170407163007.17702-3-jferlan@redhat.com> In-Reply-To: <20170407163007.17702-1-jferlan@redhat.com> References: <20170407163007.17702-1-jferlan@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH v3 2/5] storage: Introduce virStorageBackendZeroPartitionTable X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 07 Apr 2017 16:30:16 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Create a wrapper/helper that can be used to call the storage backend wipe helper - storageBackendVolWipeLocalFile for future use by logical and disk backends to clear out the partition table rather than having each open code the same algorithm. Signed-off-by: John Ferlan --- src/storage/storage_util.c | 22 ++++++++++++++++++++++ src/storage/storage_util.h | 4 ++++ 2 files changed, 26 insertions(+) diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c index c1734e7..d7394d6 100644 --- a/src/storage/storage_util.c +++ b/src/storage/storage_util.c @@ -4111,3 +4111,25 @@ virStorageBackendSCSIFindLUs(virStoragePoolObjPtr po= ol, =20 return found; } + + +/* + * @path: Path to the device to initialize + * @size: Size to be cleared + * + * Zero out possible partition table information for the specified + * bytes from the start of the @path and from the end of @path + * + * Returns 0 on success, -1 on failure with error message set + */ +int +virStorageBackendZeroPartitionTable(const char *path, + unsigned long long size) +{ + if (storageBackendVolWipeLocalFile(path, VIR_STORAGE_VOL_WIPE_ALG_ZERO, + size, false) < 0) + return -1; + + return storageBackendVolWipeLocalFile(path, VIR_STORAGE_VOL_WIPE_ALG_Z= ERO, + size, true); +} diff --git a/src/storage/storage_util.h b/src/storage/storage_util.h index 602d3a0..a05c35d 100644 --- a/src/storage/storage_util.h +++ b/src/storage/storage_util.h @@ -167,4 +167,8 @@ virStorageBackendCreateQemuImgCmdFromVol(virConnectPtr = conn, int virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool, uint32_t scanhost); =20 +int +virStorageBackendZeroPartitionTable(const char *path, + unsigned long long size); + #endif /* __VIR_STORAGE_UTIL_H__ */ --=20 2.9.3 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list