From nobody Sun Feb 8 10:03:50 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.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 154643822651965.96168091499499; Wed, 2 Jan 2019 06:10:26 -0800 (PST) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 20978CA396; Wed, 2 Jan 2019 14:10:24 +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 BDF8460139; Wed, 2 Jan 2019 14:10:23 +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 5C3CE3F60A; Wed, 2 Jan 2019 14:10:23 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x02E90in000893 for ; Wed, 2 Jan 2019 09:09:00 -0500 Received: by smtp.corp.redhat.com (Postfix) id D92FF608E0; Wed, 2 Jan 2019 14:09:00 +0000 (UTC) Received: from antique-work.brq.redhat.com (unknown [10.43.2.181]) by smtp.corp.redhat.com (Postfix) with ESMTP id 612E3608DC for ; Wed, 2 Jan 2019 14:09:00 +0000 (UTC) From: Pavel Hrdina To: libvir-list@redhat.com Date: Wed, 2 Jan 2019 15:08:38 +0100 Message-Id: <37dff839836a207c07e08871b75dfb81b3d1dd57.1546437956.git.phrdina@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH 06/19] vircgroup: introduce virCgroupV2DeviceCreateProg 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: , 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 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Wed, 02 Jan 2019 14:10:24 +0000 (UTC) Content-Type: text/plain; charset="utf-8" This function creates new BPF program with new empty BPF map with the default size and attaches it to the guest cgroup. Signed-off-by: Pavel Hrdina --- src/util/vircgroupv2.c | 43 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 86adbc4ff9..ae9aafd9a4 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -1828,6 +1828,49 @@ virCgroupV2DeviceDetectProg(virCgroupPtr group) } =20 =20 +# define VIR_CGROUP_V2_INITIAL_BPF_MAP_SIZE 64 + +static int +virCgroupV2DeviceCreateMap(size_t size) +{ + int mapfd =3D virBPFCreateMap(BPF_MAP_TYPE_HASH, sizeof(__u64), + sizeof(__u32), size); + + if (mapfd < 0) { + virReportSystemError(errno, "%s", + _("failed to initialize device BPF map")); + return -1; + } + + return mapfd; +} + + +static int +virCgroupV2DeviceCreateProg(virCgroupPtr group) +{ + int mapfd; + + if (group->unified.devices.progfd > 0 && group->unified.devices.mapfd = > 0) + return 0; + + mapfd =3D virCgroupV2DeviceCreateMap(VIR_CGROUP_V2_INITIAL_BPF_MAP_SIZ= E); + if (mapfd < 0) + return -1; + + if (virCgroupV2DeviceAttachProg(group, mapfd, + VIR_CGROUP_V2_INITIAL_BPF_MAP_SIZE) < = 0) { + goto error; + } + + return 0; + + error: + VIR_FORCE_CLOSE(mapfd); + return -1; +} + + virCgroupBackend virCgroupV2Backend =3D { .type =3D VIR_CGROUP_BACKEND_TYPE_V2, =20 --=20 2.20.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list