Commit 3615e3f7 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring/rsrc: use get/put_user() for integer copy 



It's just getting an integer from userspace, installing a file, then
copying the output direct descriptor back. No need to use the full
copy_to/from_user() for that.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent adb395c4

io_uring/rsrc.c

+2 −2
Original line number Diff line number Diff line
@@ -454,7 +454,7 @@ static int io_files_update_with_index_alloc(struct io_kiocb *req, 
		return -ENXIO;



	for (done = 0; done < up->nr_args; done++) {

		if (copy_from_user(&fd, &fds[done], sizeof(fd))) {

		if (get_user(fd, &fds[done])) {

			ret = -EFAULT;

			break;

		}
@@ -468,7 +468,7 @@ static int io_files_update_with_index_alloc(struct io_kiocb *req, 
					  IORING_FILE_INDEX_ALLOC);

		if (ret < 0)

			break;

		if (copy_to_user(&fds[done], &ret, sizeof(ret))) {

		if (put_user(ret, &fds[done])) {

			__io_close_fixed(req->ctx, issue_flags, ret);

			ret = -EFAULT;

			break;