diff options
| author | Stefan Metzmacher <metze@samba.org> | 2022-08-11 09:11:15 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-12 17:01:00 -0600 |
| commit | f2ccb5aed7bce1d8b3ed5b3385759a5509663028 (patch) | |
| tree | 32c78d3576a1e594aab4dca3c36efb6ee5dcd93e /io_uring/msg_ring.c | |
| parent | addebd9ac9ca0ef8b3764907bf8018e48caffc64 (diff) | |
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 <metze@samba.org>
Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/msg_ring.c')
| -rw-r--r-- | io_uring/msg_ring.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/io_uring/msg_ring.c b/io_uring/msg_ring.c index 753d16734319..976c4ba68ee7 100644 --- a/io_uring/msg_ring.c +++ b/io_uring/msg_ring.c @@ -26,7 +26,7 @@ struct io_msg { static int io_msg_ring_data(struct io_kiocb *req) { struct io_ring_ctx *target_ctx = req->file->private_data; - struct io_msg *msg = io_kiocb_to_cmd(req); + struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg); if (msg->src_fd || msg->dst_fd || msg->flags) return -EINVAL; @@ -76,7 +76,7 @@ static int io_double_lock_ctx(struct io_ring_ctx *ctx, static int io_msg_send_fd(struct io_kiocb *req, unsigned int issue_flags) { struct io_ring_ctx *target_ctx = req->file->private_data; - struct io_msg *msg = io_kiocb_to_cmd(req); + struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg); struct io_ring_ctx *ctx = req->ctx; unsigned long file_ptr; struct file *src_file; @@ -122,7 +122,7 @@ out_unlock: int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { - struct io_msg *msg = io_kiocb_to_cmd(req); + struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg); if (unlikely(sqe->buf_index || sqe->personality)) return -EINVAL; @@ -141,7 +141,7 @@ int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) int io_msg_ring(struct io_kiocb *req, unsigned int issue_flags) { - struct io_msg *msg = io_kiocb_to_cmd(req); + struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg); int ret; ret = -EBADFD; |