diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2014-02-19 14:21:48 +0100 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2014-03-28 14:19:01 +0100 |
| commit | ac05dbc57ef2b8709bf48693bb25e16a63e8e71f (patch) | |
| tree | b598a45b17e29c7127e40cf4e90d38706c7ffb93 /drivers/gpu | |
| parent | drm: Break out ioctl permission check to a separate function v2 (diff) | |
| download | linux-ac05dbc57ef2b8709bf48693bb25e16a63e8e71f.tar.xz linux-ac05dbc57ef2b8709bf48693bb25e16a63e8e71f.zip | |
drm: Make control nodes master-less v3
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.
v3: Formatting of logical expression. Use drm_is_control_client() instead of
drm_is_control().
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 6 |
2 files changed, 8 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 05e30530c025..cf2dfb790bf1 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -306,13 +306,14 @@ static int drm_ioctl_permit(u32 flags, struct drm_file *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_client(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_client(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 9b02f126fb0d..5432a1a61c15 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -232,7 +232,8 @@ 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_client(priv)) { /* create a new master */ priv->minor->master = drm_master_create(priv->minor); if (!priv->minor->master) { @@ -270,7 +271,8 @@ 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_client(priv)) { /* get a reference to the master */ priv->master = drm_master_get(priv->minor->master); } |