```C
/**
* Check that it requires the API of 'name'.
- * If 'initialized' is not zero it request the API to be
+ * If 'initialized' is not zero it requests the API to be
* initialized, implying its initialization if needed.
*
* Calling this function is only allowed within init.
* Get the root directory file descriptor. This file descriptor can
* be used with functions 'openat', 'fstatat', ...
*
- * CAUTION, manipulate this this descriptor with care, in particular, don't close
+ * CAUTION, manipulate this descriptor with care, in particular, don't close
* it.
*
* This can be used to get the path of the root directory using:
* @param info the brief description of the new api (can be NULL)
* @param noconcurrency zero or not zero whether the new api is reentrant or not
* @param preinit the pre-initialization function if any (can be NULL)
- * @param closure the closure for the pre-initialization \ref preinit
+ * @param closure the closure for the pre-initialization preinit
*
- * @return 0 in case of success or -1 on failure with errno set
+ * @return the created api in case of success or NULL on error
*
* @see afb_api_delete_api
*/