Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Pavel Begunkov
and committed by
Jens Axboe
da8bc3c8
c2685729
+19
-14
+19
-14
io_uring/register.c
+19
-14
io_uring/register.c
···
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return ERR_PTR(-EOPNOTSUPP);
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}
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+
static int io_uring_register_send_msg_ring(void __user *arg, unsigned int nr_args)
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{
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struct io_uring_sqe sqe;
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+
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if (!arg || nr_args != 1)
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return -EINVAL;
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if (copy_from_user(&sqe, arg, sizeof(sqe)))
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return -EFAULT;
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/* no flags supported */
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if (sqe.flags)
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return -EINVAL;
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if (sqe.opcode != IORING_OP_MSG_RING)
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return -EINVAL;
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+
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return io_uring_sync_msg_ring(&sqe);
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}
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+
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/*
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* "blind" registration opcodes are ones where there's no ring given, and
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* hence the source fd must be -1.
···
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unsigned int nr_args)
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{
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switch (opcode) {
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-
case IORING_REGISTER_SEND_MSG_RING: {
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-
struct io_uring_sqe sqe;
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-
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if (!arg || nr_args != 1)
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return -EINVAL;
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if (copy_from_user(&sqe, arg, sizeof(sqe)))
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return -EFAULT;
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/* no flags supported */
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if (sqe.flags)
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return -EINVAL;
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-
if (sqe.opcode == IORING_OP_MSG_RING)
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-
return io_uring_sync_msg_ring(&sqe);
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-
}
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case IORING_REGISTER_SEND_MSG_RING:
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return io_uring_register_send_msg_ring(arg, nr_args);
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}
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-
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return -EINVAL;
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}
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