int tdfx_version(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_version_t version;
int len;
if (copy_from_user(&version,
(drm_version_t *)arg,
sizeof(version)))
return -EFAULT;
#define DRM_COPY(name,value) \
len = strlen(value); \
if (len > name##_len) len = name##_len; \
name##_len = strlen(value); \
if (len && name) { \
if (copy_to_user(name, value, len)) \
return -EFAULT; \
}
version.version_major = TDFX_MAJOR;
version.version_minor = TDFX_MINOR;
version.version_patchlevel = TDFX_PATCHLEVEL;
DRM_COPY(version.name, TDFX_NAME);
DRM_COPY(version.date, TDFX_DATE);
DRM_COPY(version.desc, TDFX_DESC);
if (copy_to_user((drm_version_t *)arg,
&version,
sizeof(version)))
return -EFAULT;
return 0;
}
static int version( drm_version_t *version )
{
int len;
version->version_major = DRIVER_MAJOR;
version->version_minor = DRIVER_MINOR;
version->version_patchlevel = DRIVER_PATCHLEVEL;
DRM_COPY( version->name, DRIVER_NAME );
DRM_COPY( version->date, DRIVER_DATE );
DRM_COPY( version->desc, DRIVER_DESC );
return 0;
}
/**
* Get version information
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg user argument, pointing to a drm_version structure.
* \return zero on success or negative number on failure.
*
* Fills in the version information in \p arg.
*/
static int drm_version(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_version_t __user *argp = (void __user *)arg;
drm_version_t version;
int len;
if (copy_from_user(&version, argp, sizeof(version)))
return -EFAULT;
version.version_major = dev->driver->major;
version.version_minor = dev->driver->minor;
version.version_patchlevel = dev->driver->patchlevel;
DRM_COPY(version.name, dev->driver->name);
DRM_COPY(version.date, dev->driver->date);
DRM_COPY(version.desc, dev->driver->desc);
if (copy_to_user(argp, &version, sizeof(version)))
return -EFAULT;
return 0;
}
