[thirdparty/kernel/linux.git] / io_uring / cancel.h

// SPDX-License-Identifier: GPL-2.0
#ifndef IORING_CANCEL_H
#define IORING_CANCEL_H

#include <linux/io_uring_types.h>

struct io_cancel_data {
	struct io_ring_ctx *ctx;
	union {
		u64 data;
		struct file *file;
	};
	u8 opcode;
	u32 flags;
	int seq;
};

int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);

int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd,
		  unsigned int issue_flags);
void init_hash_table(struct io_hash_table *table, unsigned size);

int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg);
bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd);

static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence)
{
	if ((req->flags & REQ_F_CANCEL_SEQ) && sequence == req->work.cancel_seq)
		return true;

	req->flags |= REQ_F_CANCEL_SEQ;
	req->work.cancel_seq = sequence;
	return false;
}

#endif
Commit	Line	Data
7aaff708	1	// SPDX-License-Identifier: GPL-2.0
194bb58c JA	2	#ifndef IORING_CANCEL_H
194bb58c JA	3	#define IORING_CANCEL_H
7aaff708	4
ad163a7e JA	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	};
d7b8b079	13	u8 opcode;
ad163a7e JA	14	u32 flags;
	15	int seq;
	16	};
	17
7aaff708 JA	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
88f52eaa	21	int io_try_cancel(struct io_uring_task tctx, struct io_cancel_data cd,
5d7943d9	22	unsigned int issue_flags);
e6f89be6	23	void init_hash_table(struct io_hash_table *table, unsigned size);
78a861b9 JA	24
78a861b9 JA	25	int io_sync_cancel(struct io_ring_ctx ctx, void __user arg);
aa5cd116	26	bool io_cancel_req_match(struct io_kiocb req, struct io_cancel_data cd);
194bb58c	27
521223d7 JA	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
194bb58c	38	#endif