From nobody Sun Feb 8 23:05:55 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 1547480900921511.5743067494092; Mon, 14 Jan 2019 07:48:20 -0800 (PST) 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 145B52DD77C; Mon, 14 Jan 2019 15:48:16 +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 58BC217B10; Mon, 14 Jan 2019 15:48:15 +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 05BE13F606; Mon, 14 Jan 2019 15:48:15 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x0EFm0pg012827 for ; Mon, 14 Jan 2019 10:48:00 -0500 Received: by smtp.corp.redhat.com (Postfix) id 4D14C5C276; Mon, 14 Jan 2019 15:48:00 +0000 (UTC) Received: from antique-work.brq.redhat.com (unknown [10.43.2.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id C4F7E5C25D for ; Mon, 14 Jan 2019 15:47:59 +0000 (UTC) From: Pavel Hrdina To: libvir-list@redhat.com Date: Mon, 14 Jan 2019 16:47:43 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH v2 09/17] vircgroup: introduce virCgroupV2DevicesGetKey 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 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 14 Jan 2019 15:48:17 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Device rules are stored in BPF map that is a hash type, this function will create a key based on major and minor id of device. Signed-off-by: Pavel Hrdina --- src/libvirt_private.syms | 1 + src/util/vircgroupv2devices.c | 8 ++++++++ src/util/vircgroupv2devices.h | 4 ++++ 3 files changed, 13 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 0d25911bc1..f1da5ede71 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1616,6 +1616,7 @@ virCgroupV2DevicesAttachProg; virCgroupV2DevicesAvailable; virCgroupV2DevicesCreateProg; virCgroupV2DevicesDetectProg; +virCgroupV2DevicesGetKey; virCgroupV2DevicesGetPerms; virCgroupV2DevicesPrepareProg; virCgroupV2DevicesRemoveProg; diff --git a/src/util/vircgroupv2devices.c b/src/util/vircgroupv2devices.c index 9cf9edee3a..8bf5100724 100644 --- a/src/util/vircgroupv2devices.c +++ b/src/util/vircgroupv2devices.c @@ -524,3 +524,11 @@ virCgroupV2DevicesGetPerms(int perms ATTRIBUTE_UNUSED, return 0; } #endif /* !HAVE_DECL_BPF_CGROUP_DEVICE */ + + +uint64_t +virCgroupV2DevicesGetKey(int major, + int minor) +{ + return (uint64_t)major << 32 | ((uint64_t)minor & 0x00000000ffffffff); +} diff --git a/src/util/vircgroupv2devices.h b/src/util/vircgroupv2devices.h index cbfd9ae119..d717c9755f 100644 --- a/src/util/vircgroupv2devices.h +++ b/src/util/vircgroupv2devices.h @@ -47,4 +47,8 @@ uint32_t virCgroupV2DevicesGetPerms(int perms, char type); =20 +uint64_t +virCgroupV2DevicesGetKey(int major, + int minor); + #endif /* LIBVIRT_VIRCGROUPV2DEVICES_H */ --=20 2.20.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list