From f2ccb5aed7bce1d8b3ed5b3385759a5509663028 Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Thu, 11 Aug 2022 09:11:15 +0200 Subject: io_uring: make io_kiocb_to_cmd() typesafe We need to make sure (at build time) that struct io_cmd_data is not casted to a structure that's larger. Signed-off-by: Stefan Metzmacher Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org Signed-off-by: Jens Axboe --- io_uring/cancel.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'io_uring/cancel.c') diff --git a/io_uring/cancel.c b/io_uring/cancel.c index 8435a1eba59a..e4e1dc0325f0 100644 --- a/io_uring/cancel.c +++ b/io_uring/cancel.c @@ -107,7 +107,7 @@ int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd, int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { - struct io_cancel *cancel = io_kiocb_to_cmd(req); + struct io_cancel *cancel = io_kiocb_to_cmd(req, struct io_cancel); if (unlikely(req->flags & REQ_F_BUFFER_SELECT)) return -EINVAL; @@ -164,7 +164,7 @@ static int __io_async_cancel(struct io_cancel_data *cd, int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags) { - struct io_cancel *cancel = io_kiocb_to_cmd(req); + struct io_cancel *cancel = io_kiocb_to_cmd(req, struct io_cancel); struct io_cancel_data cd = { .ctx = req->ctx, .data = cancel->addr, -- cgit v1.2.3