80 static int null_open(BlockDriverState *bs, QDict *options, int flags,  in null_open()
103 static int64_t coroutine_fn null_co_getlength(BlockDriverState *bs)  in null_co_getlength()
109 static coroutine_fn int null_co_common(BlockDriverState *bs)  in null_co_common()
119 static coroutine_fn int null_co_preadv(BlockDriverState *bs,  in null_co_preadv()
133 static coroutine_fn int null_co_pwritev(BlockDriverState *bs,  in null_co_pwritev()
141 static coroutine_fn int null_co_flush(BlockDriverState *bs)  in null_co_flush()
170 static inline BlockAIOCB *null_aio_common(BlockDriverState *bs,  in null_aio_common()
192 static BlockAIOCB *null_aio_preadv(BlockDriverState *bs,  in null_aio_preadv()
207 static BlockAIOCB *null_aio_pwritev(BlockDriverState *bs,  in null_aio_pwritev()
216 static BlockAIOCB *null_aio_flush(BlockDriverState *bs,  in null_aio_flush()
229 static int coroutine_fn null_co_block_status(BlockDriverState *bs,  in null_co_block_status()
248 static void null_refresh_filename(BlockDriverState *bs)  in null_refresh_filename()
269 null_co_get_allocated_file_size(BlockDriverState *bs)  in null_co_get_allocated_file_size()