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 void init_hash_table(struct io_hash_table *table, unsigned size); 24 25 int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg); 26 bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd); 27 28 static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence) 29 { 30 if ((req->flags & REQ_F_CANCEL_SEQ) && sequence == req->work.cancel_seq) 31 return true; 32 33 req->flags |= REQ_F_CANCEL_SEQ; 34 req->work.cancel_seq = sequence; 35 return false; 36 } 37 38 #endif 39