| 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 | union { |
| 10 | u64 data; |
| 11 | struct file *file; |
| 12 | }; |
| 13 | u8 opcode; |
| 14 | u32 flags; |
| 15 | int seq; |
| 16 | }; |
| 17 | |
| 18 | int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); |
| 19 | int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags); |
| 20 | |
| 21 | int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd, |
| 22 | unsigned int issue_flags); |
| 23 | |
| 24 | int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg); |
| 25 | bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd); |
| 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 | |
| 31 | int io_cancel_remove(struct io_ring_ctx *ctx, struct io_cancel_data *cd, |
| 32 | unsigned int issue_flags, struct hlist_head *list, |
| 33 | bool (*cancel)(struct io_kiocb *)); |
| 34 | |
| 35 | static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence) |
| 36 | { |
| 37 | if (req->cancel_seq_set && sequence == req->work.cancel_seq) |
| 38 | return true; |
| 39 | |
| 40 | req->cancel_seq_set = true; |
| 41 | req->work.cancel_seq = sequence; |
| 42 | return false; |
| 43 | } |
| 44 | |
| 45 | #endif |
| 46 |