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io_uring: mark statx/files_update/epoll_ctl as non-SQPOLL

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These will naturally fail when attempted through SQPOLL, but either
with -EFAULT or -EBADF. Make it explicit that these are not workable
through SQPOLL and return -EINVAL, just like other ops that need to
use ->files.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-09-18 16:51:19 -06:00
parent 72f04da48a
commit 6ca56f8459
1 changed files with 4 additions and 2 deletions
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6
fs/io_uring.c
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@ -3786,7 +3786,7 @@ static int io_epoll_ctl_prep(struct io_kiocb *req,
#if defined(CONFIG_EPOLL)
if (sqe->ioprio || sqe->buf_index)
return -EINVAL;
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
if (unlikely(req->ctx->flags & (IORING_SETUP_IOPOLL | IORING_SETUP_SQPOLL)))
return -EINVAL;
req->epoll.epfd = READ_ONCE(sqe->fd);
@ -3901,7 +3901,7 @@ static int io_fadvise(struct io_kiocb *req, bool force_nonblock)
static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
if (unlikely(req->ctx->flags & (IORING_SETUP_IOPOLL | IORING_SETUP_SQPOLL)))
return -EINVAL;
if (sqe->ioprio || sqe->buf_index)
return -EINVAL;
@ -5418,6 +5418,8 @@ static int io_async_cancel(struct io_kiocb *req)
static int io_files_update_prep(struct io_kiocb *req,
const struct io_uring_sqe *sqe)
{
if (unlikely(req->ctx->flags & IORING_SETUP_SQPOLL))
return -EINVAL;
if (unlikely(req->flags & (REQ_F_FIXED_FILE | REQ_F_BUFFER_SELECT)))
return -EINVAL;
if (sqe->ioprio || sqe->rw_flags)