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