Jens Axboe 7ba89d2af1 io_uring: ensure recv and recvmsg handle MSG_WAITALL correctly
We currently don't attempt to get the full asked for length even if
MSG_WAITALL is set, if we get a partial receive. If we do see a partial
receive, then just note how many bytes we did and return -EAGAIN to
get it retried.

The iov is advanced appropriately for the vector based case, and we
manually bump the buffer and remainder for the non-vector case.

Cc: stable@vger.kernel.org
Reported-by: Constantine Gavrilov <constantine.gavrilov@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-23 16:40:20 -06:00
2022-03-06 14:28:31 -08:00

Linux kernel
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