From patchwork Mon Nov 14 15:42:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 694598 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3tHb2C5HRPz9ryZ for ; Tue, 15 Nov 2016 03:04:51 +1100 (AEDT) Received: from localhost ([::1]:41048 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6JkX-0005oa-MQ for incoming@patchwork.ozlabs.org; Mon, 14 Nov 2016 11:04:49 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35104) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6JOs-0003Yc-8A for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:42:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c6JOr-0007j2-7i for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:42:26 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:16956) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c6JOr-0007ia-2D for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:42:25 -0500 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Mon, 14 Nov 2016 08:01:43 -0800 Received: from HQMAIL101.nvidia.com ([172.20.13.39]) by hqnvupgp07.nvidia.com (PGP Universal service); Sun, 13 Nov 2016 19:41:28 -0800 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Sun, 13 Nov 2016 19:41:28 -0800 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 14 Nov 2016 15:42:23 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1210.3 via Frontend Transport; Mon, 14 Nov 2016 15:42:20 +0000 From: Kirti Wankhede To: , , , Date: Mon, 14 Nov 2016 21:12:30 +0530 Message-ID: <1479138156-28905-17-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> References: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 216.228.121.64 Subject: [Qemu-devel] [PATCH v12 16/22] vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jike.song@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kevin.tian@intel.com, qemu-devel@nongnu.org, Kirti Wankhede , bjsdjshi@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Updated vfio_pci.c file to use vfio_set_irqs_validate_and_prepare() Signed-off-by: Kirti Wankhede Signed-off-by: Neo Jia Change-Id: I9f3daba89d8dba5cb5b01a8cff420412f30686c7 --- drivers/vfio/pci/vfio_pci.c | 34 +++++++--------------------------- 1 file changed, 7 insertions(+), 27 deletions(-) diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 03b5434f4d5b..dcd7c2a99618 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -818,45 +818,25 @@ static long vfio_pci_ioctl(void *device_data, } else if (cmd == VFIO_DEVICE_SET_IRQS) { struct vfio_irq_set hdr; - size_t size; u8 *data = NULL; int max, 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 || hdr.index >= VFIO_PCI_NUM_IRQS || - hdr.count >= (U32_MAX - hdr.start) || - hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK | - VFIO_IRQ_SET_ACTION_TYPE_MASK)) - return -EINVAL; - max = vfio_pci_get_irq_count(vdev, hdr.index); - if (hdr.start >= max || hdr.start + hdr.count > max) - return -EINVAL; - switch (hdr.flags & VFIO_IRQ_SET_DATA_TYPE_MASK) { - case VFIO_IRQ_SET_DATA_NONE: - size = 0; - break; - case VFIO_IRQ_SET_DATA_BOOL: - size = sizeof(uint8_t); - break; - case VFIO_IRQ_SET_DATA_EVENTFD: - size = sizeof(int32_t); - break; - default: - return -EINVAL; - } - - if (size) { - if (hdr.argsz - minsz < hdr.count * size) - return -EINVAL; + ret = vfio_set_irqs_validate_and_prepare(&hdr, max, + VFIO_PCI_NUM_IRQS, &data_size); + if (ret) + return ret; + if (data_size) { data = memdup_user((void __user *)(arg + minsz), - hdr.count * size); + data_size); if (IS_ERR(data)) return PTR_ERR(data); }