io_uring/cancel.h

   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->cancel_seq_set && sequence == req->work.cancel_seq)
  31                 return true;
  32
  33         req->cancel_seq_set = true;
  34         req->work.cancel_seq = sequence;
  35         return false;
  36 }
  37
  38 #endif