1 // SPDX-License-Identifier: GPL-2.0
2 #ifndef IORING_CANCEL_H
3 #define IORING_CANCEL_H
4
5 #include <linux/io_uring_types.h>
6
7 struct io_cancel_data {
8 struct io_ring_ctx *ctx;
9 u64 data;
10 struct file *file;
11 u8 opcode;
12 u32 flags;
13 int seq;
14 };
15
16 int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
17 int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);
18
19 int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd,
20 unsigned int issue_flags);
21
22 int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg);
23 bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd);
24 bool io_match_task_safe(struct io_kiocb *head, struct io_uring_task *tctx,
25 bool cancel_all);
26
27 bool io_cancel_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx,
28 struct hlist_head *list, bool cancel_all,
29 bool (*cancel)(struct io_kiocb *));
30 int io_cancel_remove(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
31 unsigned int issue_flags, struct hlist_head *list,
32 bool (*cancel)(struct io_kiocb *));
33 __cold bool io_uring_try_cancel_requests(struct io_ring_ctx *ctx,
34 struct io_uring_task *tctx,
35 bool cancel_all, bool is_sqpoll_thread);
36 __cold void io_uring_cancel_generic(bool cancel_all, struct io_sq_data *sqd);
37 __cold bool io_cancel_ctx_cb(struct io_wq_work *work, void *data);
38
io_cancel_match_sequence(struct io_kiocb * req,int sequence)39 static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence)
40 {
41 if (req->cancel_seq_set && sequence == req->work.cancel_seq)
42 return true;
43
44 req->cancel_seq_set = true;
45 req->work.cancel_seq = sequence;
46 return false;
47 }
48
49 #endif
50