From patchwork Tue Nov 15 15:30:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 9429995 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1F6AB60471 for ; Tue, 15 Nov 2016 15:31:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1024C28BEF for ; Tue, 15 Nov 2016 15:31:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 050B228BF1; Tue, 15 Nov 2016 15:31:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AEB0F28BEF for ; Tue, 15 Nov 2016 15:31:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965431AbcKOP37 (ORCPT ); Tue, 15 Nov 2016 10:29:59 -0500 Received: from hqemgate16.nvidia.com ([216.228.121.65]:11222 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965163AbcKOP36 (ORCPT ); Tue, 15 Nov 2016 10:29:58 -0500 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com id ; Tue, 15 Nov 2016 07:53:19 -0800 Received: from HQMAIL104.nvidia.com ([172.20.13.39]) by hqnvupgp07.nvidia.com (PGP Universal service); Mon, 14 Nov 2016 19:28:59 -0800 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Mon, 14 Nov 2016 19:28:59 -0800 Received: from HQMAIL102.nvidia.com (172.18.146.10) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Tue, 15 Nov 2016 15:29:57 +0000 Received: from HQMAIL104.nvidia.com (172.18.146.11) by HQMAIL102.nvidia.com (172.18.146.10) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Tue, 15 Nov 2016 15:29:56 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1210.3 via Frontend Transport; Tue, 15 Nov 2016 15:29:53 +0000 From: Kirti Wankhede To: , , , CC: , , , , , , Kirti Wankhede Subject: [PATCH v13 17/22] vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() Date: Tue, 15 Nov 2016 21:00:00 +0530 Message-ID: <1479223805-22895-18-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1479223805-22895-1-git-send-email-kwankhede@nvidia.com> References: <1479223805-22895-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Updated vfio_platform_common.c file to use vfio_set_irqs_validate_and_prepare() Signed-off-by: Kirti Wankhede Signed-off-by: Neo Jia Change-Id: Id87cd6b78ae901610b39bf957974baa6f40cd7b0 --- drivers/vfio/platform/vfio_platform_common.c | 31 +++++++--------------------- 1 file changed, 8 insertions(+), 23 deletions(-) diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index d78142830754..4c27f4be3c3d 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -364,36 +364,21 @@ static long vfio_platform_ioctl(void *device_data, struct vfio_irq_set hdr; u8 *data = NULL; int ret = 0; + size_t data_size = 0; minsz = offsetofend(struct vfio_irq_set, count); if (copy_from_user(&hdr, (void __user *)arg, minsz)) return -EFAULT; - if (hdr.argsz < minsz) - return -EINVAL; - - if (hdr.index >= vdev->num_irqs) - return -EINVAL; - - if (hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK | - VFIO_IRQ_SET_ACTION_TYPE_MASK)) - return -EINVAL; - - if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) { - size_t size; - - if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL) - size = sizeof(uint8_t); - else if (hdr.flags & VFIO_IRQ_SET_DATA_EVENTFD) - size = sizeof(int32_t); - else - return -EINVAL; - - if (hdr.argsz - minsz < size) - return -EINVAL; + ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs, + vdev->num_irqs, &data_size); + if (ret) + return ret; - data = memdup_user((void __user *)(arg + minsz), size); + if (data_size) { + data = memdup_user((void __user *)(arg + minsz), + data_size); if (IS_ERR(data)) return PTR_ERR(data); }