/**
* Authenticate with a magic.
*
* \param inode device inode.
* \param file_priv DRM file private.
* \param cmd command.
* \param arg pointer to a drm_auth structure.
* \return zero if authentication successed, or a negative number otherwise.
*
* Checks if \p file_priv is associated with the magic number passed in \arg.
* This ioctl needs protection by the drm_global_mutex, which protects
* struct drm_file::magic and struct drm_magic_entry::priv.
*/
int drm_authmagic(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_auth *auth = data;
struct drm_file *file;
DRM_DEBUG("%u\n", auth->magic);
if ((file = drm_find_file(dev, auth->magic))) {
file->authenticated = 1;
drm_remove_magic(dev, auth->magic);
return 0;
}
return -EINVAL;
}
/*ARGSUSED*/
int
drm_authmagic(DRM_IOCTL_ARGS)
{
drm_auth_t auth;
drm_file_t *file;
DRM_DEVICE;
DRM_COPYFROM_WITH_RETURN(&auth, (void *)data, sizeof (auth));
if ((file = drm_find_file(dev, auth.magic))) {
file->authenticated = 1;
(void) drm_remove_magic(dev, auth.magic);
return (0);
}
return (EINVAL);
}
int drm_authmagic(DRM_IOCTL_ARGS)
{
drm_auth_t auth;
drm_file_t *file;
DRM_DEVICE;
DRM_COPY_FROM_USER_IOCTL(auth, (drm_auth_t *)data, sizeof(auth));
DRM_DEBUG("%u\n", auth.magic);
if ((file = drm_find_file(dev, auth.magic))) {
file->authenticated = 1;
drm_remove_magic(dev, auth.magic);
return 0;
}
return DRM_ERR(EINVAL);
}
/**
* Authenticate with a magic.
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_auth structure.
* \return zero if authentication successed, or a negative number otherwise.
*
* Checks if \p filp is associated with the magic number passed in \arg.
*/
int drm_authmagic(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_auth_t auth;
drm_file_t *file;
if (copy_from_user(&auth, (drm_auth_t __user *)arg, sizeof(auth)))
return -EFAULT;
DRM_DEBUG("%u\n", auth.magic);
if ((file = drm_find_file(dev, auth.magic))) {
file->authenticated = 1;
drm_remove_magic(dev, auth.magic);
return 0;
}
return -EINVAL;
}
/**
* Marks the client associated with the given magic number as authenticated.
*/
int drm_authmagic(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_auth *auth = data;
struct drm_file *priv;
DRM_DEBUG("%u\n", auth->magic);
DRM_LOCK();
priv = drm_find_file(dev, auth->magic);
if (priv != NULL) {
priv->authenticated = 1;
drm_remove_magic(dev, auth->magic);
DRM_UNLOCK();
return 0;
} else {
DRM_UNLOCK();
return EINVAL;
}
}
