From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Hellstrom Subject: [PATCH 3/5] drm: Make control nodes master-less v2 Date: Thu, 13 Mar 2014 11:57:22 +0100 Message-ID: <1394708244-6565-4-git-send-email-thellstrom@vmware.com> References: <1394708244-6565-1-git-send-email-thellstrom@vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp-outbound-1.vmware.com (smtp-outbound-1.vmware.com [208.91.2.12]) by gabe.freedesktop.org (Postfix) with ESMTP id 3D76CFA16D for ; Thu, 13 Mar 2014 03:56:37 -0700 (PDT) In-Reply-To: <1394708244-6565-1-git-send-email-thellstrom@vmware.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org To: airlied@gmail.com, airlied@redhat.com Cc: Thomas Hellstrom , linux-graphics-maintainer@vmware.com, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org 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. v2: Adapt to refactoring of ioctl permission check. Signed-off-by: Thomas Hellstrom --- drivers/gpu/drm/drm_drv.c | 9 +++++---- drivers/gpu/drm/drm_fops.c | 5 +++-- include/drm/drmP.h | 5 +++++ 3 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 0afc6e4..e41ee82 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -307,14 +307,15 @@ static int drm_ioctl_permit(u32 flags, struct drm_file *file_priv) if (unlikely((flags & DRM_AUTH) && !drm_is_render_client(file_priv) && !file_priv->authenticated)) return -EACCES; - - /* MASTER is only for master */ - if (unlikely((flags & DRM_MASTER) && !file_priv->is_master)) + + /* MASTER is only for master or control clients */ + if (unlikely((flags & DRM_MASTER) && + !(file_priv->is_master || drm_is_control(file_priv)))) return -EACCES; /* Control clients must be explicitly allowed */ if (unlikely(!(flags & DRM_CONTROL_ALLOW) && - file_priv->minor->type == DRM_MINOR_CONTROL)) + drm_is_control(file_priv))) return -EACCES; /* Render clients must be explicitly allowed */ 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 */ /*@{*/ -- 1.7.10.4