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 bool io_match_task_safe(struct io_kiocb *head, struct io_uring_task *tctx, 27 bool cancel_all); 28 29 bool 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 *)); 32 int 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 41 static 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 52