Commit da8bc3c8 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: add helper for *REGISTER_SEND_MSG_RING 



Move handling of IORING_REGISTER_SEND_MSG_RING into a separate function
in preparation to growing io_uring_register_blind().

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent c2685729

io_uring/register.c

+19 −14
Original line number Diff line number Diff line
@@ -874,15 +874,8 @@ struct file *io_uring_register_get_file(unsigned int fd, bool registered) 
	return ERR_PTR(-EOPNOTSUPP);

}



/*

 * "blind" registration opcodes are ones where there's no ring given, and

 * hence the source fd must be -1.

 */

static int io_uring_register_blind(unsigned int opcode, void __user *arg,

				   unsigned int nr_args)

static int io_uring_register_send_msg_ring(void __user *arg, unsigned int nr_args)

{

	switch (opcode) {

	case IORING_REGISTER_SEND_MSG_RING: {

	struct io_uring_sqe sqe;



	if (!arg || nr_args != 1)
@@ -892,11 +885,23 @@ static int io_uring_register_blind(unsigned int opcode, void __user *arg, 
	/* no flags supported */

	if (sqe.flags)

		return -EINVAL;

		if (sqe.opcode == IORING_OP_MSG_RING)

	if (sqe.opcode != IORING_OP_MSG_RING)

		return -EINVAL;



	return io_uring_sync_msg_ring(&sqe);

}

	}



/*

 * "blind" registration opcodes are ones where there's no ring given, and

 * hence the source fd must be -1.

 */

static int io_uring_register_blind(unsigned int opcode, void __user *arg,

				   unsigned int nr_args)

{

	switch (opcode) {

	case IORING_REGISTER_SEND_MSG_RING:

		return io_uring_register_send_msg_ring(arg, nr_args);

	}

	return -EINVAL;

}