From nobody Wed Feb 11 10:15:07 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.39 as permitted sender) client-ip=209.132.183.39; envelope-from=libvir-list-bounces@redhat.com; helo=mx6-phx2.redhat.com; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.39 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; Return-Path: Received: from mx6-phx2.redhat.com (mx6-phx2.redhat.com [209.132.183.39]) by mx.zohomail.com with SMTPS id 148959600928664.76603629182921; Wed, 15 Mar 2017 09:40:09 -0700 (PDT) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by mx6-phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v2FGawO4023620; Wed, 15 Mar 2017 12:36:58 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id v2FGavL4024982 for ; Wed, 15 Mar 2017 12:36:57 -0400 Received: from angien.brq.redhat.com (dhcp129-47.brq.redhat.com [10.34.129.47]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v2FGafIQ000870; Wed, 15 Mar 2017 12:36:56 -0400 From: Peter Krempa To: libvir-list@redhat.com Date: Wed, 15 Mar 2017 17:37:24 +0100 Message-Id: In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-loop: libvir-list@redhat.com Cc: Peter Krempa Subject: [libvirt] [PATCH 12/23] qemu: domain: Add helper to look up disk soruce by the backing store string 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-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" --- src/qemu/qemu_domain.c | 37 +++++++++++++++++++++++++++++++++++++ src/qemu/qemu_domain.h | 3 +++ 2 files changed, 40 insertions(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 0c633af33..402b0730e 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -8434,3 +8434,40 @@ qemuDomainDiskBackingStoreGetName(virDomainDiskDefPt= r disk, return ret; } + + +virStorageSourcePtr +qemuDomainGetStorageSourceByDevstr(const char *devstr, + virDomainDefPtr def) +{ + virDomainDiskDefPtr disk =3D NULL; + virStorageSourcePtr src =3D NULL; + char *target =3D NULL; + unsigned int idx; + size_t i; + + if (virStorageFileParseBackingStoreStr(devstr, &target, &idx) < 0) { + virReportError(VIR_ERR_INVALID_ARG, + _("failed to parse block device '%s'"), devstr); + return NULL; + } + + for (i =3D 0; i < def->ndisks; i++) { + if (STREQ(target, def->disks[i]->dst)) { + disk =3D def->disks[i]; + break; + } + } + + if (!disk) { + virReportError(VIR_ERR_INVALID_ARG, + _("failed to find disk '%s"), target); + goto cleanup; + } + + src =3D virStorageFileChainLookup(disk->src, NULL, NULL, idx, NULL); + + cleanup: + VIR_FREE(target); + return src; +} diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index a07d671a9..3a7afdf45 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -862,4 +862,7 @@ char *qemuDomainDiskBackingStoreGetName(virDomainDiskDe= fPtr disk, virStorageSourcePtr src, unsigned int idx); +virStorageSourcePtr qemuDomainGetStorageSourceByDevstr(const char *devstr, + virDomainDefPtr def= ); + #endif /* __QEMU_DOMAIN_H__ */ --=20 2.12.0 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list