33 static int io_eventfd_register(struct io_ring_ctx *ctx, void __user *arg,  in io_eventfd_register()  argument
37 	__s32 __user *fds = arg;  in io_eventfd_register()
88 static __cold int io_probe(struct io_ring_ctx *ctx, void __user *arg,  in io_probe()  argument
103 	if (copy_from_user(p, arg, size))  in io_probe()
121 	if (copy_to_user(arg, p, size))  in io_probe()
160 					   void __user *arg, unsigned int nr_args)  in io_register_restrictions()  argument
174 	if (!arg || nr_args > IORING_MAX_RESTRICTIONS)  in io_register_restrictions()
181 	res = memdup_user(arg, size);  in io_register_restrictions()
270 				       void __user *arg, unsigned len)  in io_register_iowq_aff()  argument
285 					(const compat_ulong_t __user *)arg,  in io_register_iowq_aff()
289 		ret = copy_from_user(new_mask, arg, len);  in io_register_iowq_aff()
307 					       void __user *arg)  in io_register_iowq_max_workers()  argument
316 	if (copy_from_user(new_count, arg, sizeof(new_count)))  in io_register_iowq_max_workers()
361 	if (copy_to_user(arg, new_count, sizeof(new_count)))  in io_register_iowq_max_workers()
390 			       void __user *arg, unsigned nr_args)  in __io_uring_register()  argument
415 		if (!arg)  in __io_uring_register()
417 		ret = io_sqe_buffers_register(ctx, arg, nr_args, NULL);  in __io_uring_register()
421 		if (arg || nr_args)  in __io_uring_register()
427 		if (!arg)  in __io_uring_register()
429 		ret = io_sqe_files_register(ctx, arg, nr_args, NULL);  in __io_uring_register()
433 		if (arg || nr_args)  in __io_uring_register()
438 		ret = io_register_files_update(ctx, arg, nr_args);  in __io_uring_register()
444 		ret = io_eventfd_register(ctx, arg, 0);  in __io_uring_register()
450 		ret = io_eventfd_register(ctx, arg, 1);  in __io_uring_register()
454 		if (arg || nr_args)  in __io_uring_register()
460 		if (!arg || nr_args > 256)  in __io_uring_register()
462 		ret = io_probe(ctx, arg, nr_args);  in __io_uring_register()
466 		if (arg || nr_args)  in __io_uring_register()
472 		if (arg)  in __io_uring_register()
478 		if (arg || nr_args)  in __io_uring_register()
483 		ret = io_register_restrictions(ctx, arg, nr_args);  in __io_uring_register()
486 		ret = io_register_rsrc(ctx, arg, nr_args, IORING_RSRC_FILE);  in __io_uring_register()
489 		ret = io_register_rsrc_update(ctx, arg, nr_args,  in __io_uring_register()
493 		ret = io_register_rsrc(ctx, arg, nr_args, IORING_RSRC_BUFFER);  in __io_uring_register()
496 		ret = io_register_rsrc_update(ctx, arg, nr_args,  in __io_uring_register()
501 		if (!arg || !nr_args)  in __io_uring_register()
503 		ret = io_register_iowq_aff(ctx, arg, nr_args);  in __io_uring_register()
507 		if (arg || nr_args)  in __io_uring_register()
513 		if (!arg || nr_args != 2)  in __io_uring_register()
515 		ret = io_register_iowq_max_workers(ctx, arg);  in __io_uring_register()
518 		ret = io_ringfd_register(ctx, arg, nr_args);  in __io_uring_register()
521 		ret = io_ringfd_unregister(ctx, arg, nr_args);  in __io_uring_register()
525 		if (!arg || nr_args != 1)  in __io_uring_register()
527 		ret = io_register_pbuf_ring(ctx, arg);  in __io_uring_register()
531 		if (!arg || nr_args != 1)  in __io_uring_register()
533 		ret = io_unregister_pbuf_ring(ctx, arg);  in __io_uring_register()
537 		if (!arg || nr_args != 1)  in __io_uring_register()
539 		ret = io_sync_cancel(ctx, arg);  in __io_uring_register()
543 		if (!arg || nr_args)  in __io_uring_register()
545 		ret = io_register_file_alloc_range(ctx, arg);  in __io_uring_register()
549 		if (!arg || nr_args != 1)  in __io_uring_register()
551 		ret = io_register_pbuf_status(ctx, arg);  in __io_uring_register()
562 		void __user *, arg, unsigned int, nr_args)  in SYSCALL_DEFINE4()  argument
600 	ret = __io_uring_register(ctx, opcode, arg, nr_args);  in SYSCALL_DEFINE4()