From patchwork Wed Feb 19 13:40:41 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Hellstrom X-Patchwork-Id: 3681011 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0E9D59F35F for ; Wed, 19 Feb 2014 13:41:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 14232201BA for ; Wed, 19 Feb 2014 13:41:11 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id D95B82014A for ; Wed, 19 Feb 2014 13:41:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 40C4BFADC0; Wed, 19 Feb 2014 05:41:02 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com [208.91.2.13]) by gabe.freedesktop.org (Postfix) with ESMTP id D5F7DFADC1 for ; Wed, 19 Feb 2014 05:40:57 -0800 (PST) Received: from sc9-mailhost3.vmware.com (sc9-mailhost3.vmware.com [10.113.161.73]) by smtp-outbound-2.vmware.com (Postfix) with ESMTP id 1F04E2B6B0; Wed, 19 Feb 2014 05:40:57 -0800 (PST) Received: from zcs-prod-ext-mta-2.vmware.com (zcs-prod-ext-mta-2.vmware.com [10.113.62.224]) by sc9-mailhost3.vmware.com (Postfix) with ESMTP id 1AF95401DC; Wed, 19 Feb 2014 05:40:57 -0800 (PST) Received: from zcs-prod-ext-mta-2.vmware.com (localhost.localdomain [127.0.0.1]) by zcs-prod-ext-mta-2.vmware.com (Postfix) with ESMTP id 727D4C0039; Wed, 19 Feb 2014 05:40:56 -0800 (PST) Received: from localhost.localdomain (zimbra-prod-ext-proxy-vip.vmware.com [10.113.63.87]) by zcs-prod-ext-mta-2.vmware.com (Postfix) with ESMTPSA; Wed, 19 Feb 2014 05:40:54 -0800 (PST) From: Thomas Hellstrom To: airlied@redhat.com, dri-devel@lists.freedesktop.org Subject: [PATCH 1/2] drm: Make control nodes master-less Date: Wed, 19 Feb 2014 14:40:41 +0100 Message-Id: <1392817242-15889-1-git-send-email-thellstrom@vmware.com> X-Mailer: git-send-email 1.7.10.4 Cc: Thomas Hellstrom , linux-graphics-maintainer@vmware.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Like for render-nodes, there is no point in maintaining the master concept for control nodes, so set the struct drm_file::master pointer to NULL. At the same time, make sure DRM_MASTER | DRM_CONTROL_ALLOW ioctls are always allowed when called through the control node. Previously the caller also needed to be master. Signed-off-by: Thomas Hellstrom --- drivers/gpu/drm/drm_drv.c | 5 +++-- drivers/gpu/drm/drm_fops.c | 5 +++-- include/drm/drmP.h | 5 +++++ 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 345be03..42af8bd 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -355,8 +355,9 @@ long drm_ioctl(struct file *filp, retcode = -EINVAL; } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || ((ioctl->flags & DRM_AUTH) && !drm_is_render_client(file_priv) && !file_priv->authenticated) || - ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) || - (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL)) || + (((ioctl->flags & DRM_MASTER) && !file_priv->is_master) && + !(drm_is_control(file_priv) && (ioctl->flags & DRM_CONTROL_ALLOW))) || + (!(ioctl->flags & DRM_CONTROL_ALLOW) && drm_is_control(file_priv)) || (!(ioctl->flags & DRM_RENDER_ALLOW) && drm_is_render_client(file_priv))) { retcode = -EACCES; } else { diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 7f2af9a..08a3196 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -259,7 +259,8 @@ static int drm_open_helper(struct inode *inode, struct file *filp, /* if there is no current master make this fd it, but do not create * any master object for render clients */ mutex_lock(&dev->struct_mutex); - if (!priv->minor->master && !drm_is_render_client(priv)) { + if (!priv->minor->master && !drm_is_render_client(priv) && + !drm_is_control(priv)) { /* create a new master */ priv->minor->master = drm_master_create(priv->minor); if (!priv->minor->master) { @@ -297,7 +298,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp, goto out_close; } } - } else if (!drm_is_render_client(priv)) { + } else if (!drm_is_render_client(priv) && !drm_is_control(priv)) { /* get a reference to the master */ priv->master = drm_master_get(priv->minor->master); } diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 04a7f31..ff68e26 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1246,6 +1246,11 @@ static inline bool drm_is_render_client(struct drm_file *file_priv) return file_priv->minor->type == DRM_MINOR_RENDER; } +static inline bool drm_is_control(struct drm_file *file_priv) +{ + return file_priv->minor->type == DRM_MINOR_CONTROL; +} + /******************************************************************/ /** \name Internal function definitions */ /*@{*/