38 static __cold int io_probe(struct io_ring_ctx *ctx, void __user *arg,  in io_probe()  argument
54 	if (copy_from_user(p, arg, size))  in io_probe()
70 	if (copy_to_user(arg, p, size))  in io_probe()
108 static __cold int io_parse_restrictions(void __user *arg, unsigned int nr_args,  in io_parse_restrictions()  argument
115 	if (!arg || nr_args > IORING_MAX_RESTRICTIONS)  in io_parse_restrictions()
122 	res = memdup_user(arg, size);  in io_parse_restrictions()
159 					   void __user *arg, unsigned int nr_args)  in io_register_restrictions()  argument
171 	ret = io_parse_restrictions(arg, nr_args, &ctx->restrictions);  in io_register_restrictions()
221 				       void __user *arg, unsigned len)  in io_register_iowq_aff()  argument
236 					(const compat_ulong_t __user *)arg,  in io_register_iowq_aff()
240 		ret = copy_from_user(new_mask, arg, len);  in io_register_iowq_aff()
258 					       void __user *arg)  in io_register_iowq_max_workers()  argument
267 	if (copy_from_user(new_count, arg, sizeof(new_count)))  in io_register_iowq_max_workers()
314 	if (copy_to_user(arg, new_count, sizeof(new_count)))  in io_register_iowq_max_workers()
344 			     struct io_uring_clock_register __user *arg)  in io_register_clock()  argument
348 	if (copy_from_user(&reg, arg, sizeof(reg)))  in io_register_clock()
398 static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg)  in io_register_resize_rings()  argument
414 	if (copy_from_user(&p, arg, sizeof(p)))  in io_register_resize_rings()
428 		if (copy_to_user(arg, &p, sizeof(p)))  in io_register_resize_rings()
464 	if (copy_to_user(arg, &p, sizeof(p))) {  in io_register_resize_rings()
630 			       void __user *arg, unsigned nr_args)  in __io_uring_register()  argument
655 		if (!arg)  in __io_uring_register()
657 		ret = io_sqe_buffers_register(ctx, arg, nr_args, NULL);  in __io_uring_register()
661 		if (arg || nr_args)  in __io_uring_register()
667 		if (!arg)  in __io_uring_register()
669 		ret = io_sqe_files_register(ctx, arg, nr_args, NULL);  in __io_uring_register()
673 		if (arg || nr_args)  in __io_uring_register()
678 		ret = io_register_files_update(ctx, arg, nr_args);  in __io_uring_register()
684 		ret = io_eventfd_register(ctx, arg, 0);  in __io_uring_register()
690 		ret = io_eventfd_register(ctx, arg, 1);  in __io_uring_register()
694 		if (arg || nr_args)  in __io_uring_register()
700 		if (!arg || nr_args > 256)  in __io_uring_register()
702 		ret = io_probe(ctx, arg, nr_args);  in __io_uring_register()
706 		if (arg || nr_args)  in __io_uring_register()
712 		if (arg)  in __io_uring_register()
718 		if (arg || nr_args)  in __io_uring_register()
723 		ret = io_register_restrictions(ctx, arg, nr_args);  in __io_uring_register()
726 		ret = io_register_rsrc(ctx, arg, nr_args, IORING_RSRC_FILE);  in __io_uring_register()
729 		ret = io_register_rsrc_update(ctx, arg, nr_args,  in __io_uring_register()
733 		ret = io_register_rsrc(ctx, arg, nr_args, IORING_RSRC_BUFFER);  in __io_uring_register()
736 		ret = io_register_rsrc_update(ctx, arg, nr_args,  in __io_uring_register()
741 		if (!arg || !nr_args)  in __io_uring_register()
743 		ret = io_register_iowq_aff(ctx, arg, nr_args);  in __io_uring_register()
747 		if (arg || nr_args)  in __io_uring_register()
753 		if (!arg || nr_args != 2)  in __io_uring_register()
755 		ret = io_register_iowq_max_workers(ctx, arg);  in __io_uring_register()
758 		ret = io_ringfd_register(ctx, arg, nr_args);  in __io_uring_register()
761 		ret = io_ringfd_unregister(ctx, arg, nr_args);  in __io_uring_register()
765 		if (!arg || nr_args != 1)  in __io_uring_register()
767 		ret = io_register_pbuf_ring(ctx, arg);  in __io_uring_register()
771 		if (!arg || nr_args != 1)  in __io_uring_register()
773 		ret = io_unregister_pbuf_ring(ctx, arg);  in __io_uring_register()
777 		if (!arg || nr_args != 1)  in __io_uring_register()
779 		ret = io_sync_cancel(ctx, arg);  in __io_uring_register()
783 		if (!arg || nr_args)  in __io_uring_register()
785 		ret = io_register_file_alloc_range(ctx, arg);  in __io_uring_register()
789 		if (!arg || nr_args != 1)  in __io_uring_register()
791 		ret = io_register_pbuf_status(ctx, arg);  in __io_uring_register()
795 		if (!arg || nr_args != 1)  in __io_uring_register()
797 		ret = io_register_napi(ctx, arg);  in __io_uring_register()
803 		ret = io_unregister_napi(ctx, arg);  in __io_uring_register()
807 		if (!arg || nr_args)  in __io_uring_register()
809 		ret = io_register_clock(ctx, arg);  in __io_uring_register()
813 		if (!arg || nr_args != 1)  in __io_uring_register()
815 		ret = io_register_clone_buffers(ctx, arg);  in __io_uring_register()
819 		if (!arg || nr_args != 1)  in __io_uring_register()
821 		ret = io_register_zcrx_ifq(ctx, arg);  in __io_uring_register()
825 		if (!arg || nr_args != 1)  in __io_uring_register()
827 		ret = io_register_resize_rings(ctx, arg);  in __io_uring_register()
831 		if (!arg || nr_args != 1)  in __io_uring_register()
833 		ret = io_register_mem_region(ctx, arg);  in __io_uring_register()
881 static int io_uring_register_blind(unsigned int opcode, void __user *arg,  in io_uring_register_blind()  argument
888 		if (!arg || nr_args != 1)  in io_uring_register_blind()
890 		if (copy_from_user(&sqe, arg, sizeof(sqe)))  in io_uring_register_blind()
904 		void __user *, arg, unsigned int, nr_args)  in SYSCALL_DEFINE4()  argument
918 		return io_uring_register_blind(opcode, arg, nr_args);  in SYSCALL_DEFINE4()
926 	ret = __io_uring_register(ctx, opcode, arg, nr_args);  in SYSCALL_DEFINE4()