From nobody Wed May 14 14:19:22 2025 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.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1524151564880521.0491495592331; Thu, 19 Apr 2018 08:26:04 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 707D1313066A; Thu, 19 Apr 2018 15:26:03 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 12D8D8B37D; Thu, 19 Apr 2018 15:26:03 +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 BA2C84CAA4; Thu, 19 Apr 2018 15:26:02 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w3JFPhRo021910 for ; Thu, 19 Apr 2018 11:25:43 -0400 Received: by smtp.corp.redhat.com (Postfix) id B0B5084422; Thu, 19 Apr 2018 15:25:43 +0000 (UTC) Received: from andariel.redhat.com (ovpn-204-221.brq.redhat.com [10.40.204.221]) by smtp.corp.redhat.com (Postfix) with ESMTP id CB92284420; Thu, 19 Apr 2018 15:25:42 +0000 (UTC) From: Peter Krempa To: libvir-list@redhat.com Date: Thu, 19 Apr 2018 17:25:06 +0200 Message-Id: <31587353004e95e053785b9128f451a693339b53.1524151023.git.pkrempa@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-loop: libvir-list@redhat.com Cc: kwolf@redhat.com, Peter Krempa Subject: [libvirt] [RFC PATCH 09/30] qemu: block: Add support for accessing directories via the 'vvfat' driver 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 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Thu, 19 Apr 2018 15:26:04 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Handle VIR_STORAGE_TYPE_DIR in qemuBlockStorageSourceGetBackendProps so that a 'vvfat' driver is used, which emulates a FAT filesystem containing the folders. qemu requires us to add it as a storage layer, since a 'raw' layer is usually put on top of it. Signed-off-by: Peter Krempa --- src/qemu/qemu_block.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c index 6cf41cf544..516b006ce9 100644 --- a/src/qemu/qemu_block.c +++ b/src/qemu/qemu_block.c @@ -992,6 +992,25 @@ qemuBlockStorageSourceGetFileProps(virStorageSourcePtr= src) } +static virJSONValuePtr +qemuBlockStorageSourceGetVvfatProps(virStorageSourcePtr src) +{ + virJSONValuePtr ret =3D NULL; + + /* libvirt currently does not handle the following attributes: + * '*fat-type': 'int' + * '*label': 'str' + */ + ignore_value(virJSONValueObjectCreate(&ret, + "s:driver", "vvfat", + "s:dir", src->path, + "b:floppy", src->floppyimg, + "b:rw", !src->readonly, NULL)); + + return ret; +} + + /** * qemuBlockStorageSourceGetBackendProps: * @src: disk source @@ -1008,11 +1027,17 @@ qemuBlockStorageSourceGetBackendProps(virStorageSou= rcePtr src) switch ((virStorageType) actualType) { case VIR_STORAGE_TYPE_BLOCK: case VIR_STORAGE_TYPE_FILE: - case VIR_STORAGE_TYPE_DIR: if (!(fileprops =3D qemuBlockStorageSourceGetFileProps(src))) return NULL; break; + case VIR_STORAGE_TYPE_DIR: + /* qemu handles directories by exposing them as a device with emul= ated + * FAT filesystem */ + if (!(fileprops =3D qemuBlockStorageSourceGetVvfatProps(src))) + return NULL; + break; + case VIR_STORAGE_TYPE_VOLUME: case VIR_STORAGE_TYPE_NONE: case VIR_STORAGE_TYPE_LAST: --=20 2.14.3 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list