[lttng-tools.git] / include / lttng / kernel-probe-internal.h

/*
 * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#ifndef LTTNG_KERNEL_PROBE_INTERNAL_H
#define LTTNG_KERNEL_PROBE_INTERNAL_H

#include <common/fd-handle.h>
#include <common/macros.h>
#include <lttng/kernel-probe.h>
#include <stdbool.h>
#include <stdint.h>
#include <sys/types.h>

struct lttng_payload;
struct lttng_payload_view;
struct lttng_dynamic_buffer;
struct mi_writer;

typedef bool (*kernel_probe_location_equal_cb)(
		const struct lttng_kernel_probe_location *a,
		const struct lttng_kernel_probe_location *b);
typedef int (*kernel_probe_location_serialize_cb)(
		const struct lttng_kernel_probe_location *kernel_probe_location,
		struct lttng_payload *payload);
typedef bool (*kernel_probe_location_equal_cb)(
		const struct lttng_kernel_probe_location *a,
		const struct lttng_kernel_probe_location *b);
typedef ssize_t (*kernel_probe_location_create_from_payload_cb)(
		struct lttng_payload_view *view,
		struct lttng_kernel_probe_location **kernel_probe_location);
typedef unsigned long (*kernel_probe_location_hash_cb)(
		const struct lttng_kernel_probe_location *location);
typedef enum lttng_error_code (*kernel_probe_location_mi_serialize_cb)(
		const struct lttng_kernel_probe_location *location,
		struct mi_writer *writer);

struct lttng_kernel_probe_location_comm {
	/* enum lttng_kernel_probe_location_type */
	int8_t type;
	/*
	 * Payload is composed of, in that order,
	 *   - type-specific payload
	 */
	char payload[];
} LTTNG_PACKED;

struct lttng_kernel_probe_location_symbol_comm {
	/* Includes the trailing \0. */
	uint32_t symbol_len;
	/* The offset from the symbol. */
	uint64_t offset;
	/*
	 * Payload is composed of, in that order,
	 *   - symbol name (with trailing \0).
	 */
	char payload[];
} LTTNG_PACKED;

struct lttng_kernel_probe_location_address_comm {
	uint64_t address;
} LTTNG_PACKED;

/* Common ancestor of all kernel probe locations. */
struct lttng_kernel_probe_location {
	enum lttng_kernel_probe_location_type type;
	kernel_probe_location_equal_cb equal;
	kernel_probe_location_serialize_cb serialize;
	kernel_probe_location_hash_cb hash;
	kernel_probe_location_mi_serialize_cb mi_serialize;
};

struct lttng_kernel_probe_location_symbol {
	struct lttng_kernel_probe_location parent;
	char *symbol_name;
	uint64_t offset;
};

struct lttng_kernel_probe_location_address {
	struct lttng_kernel_probe_location parent;
	uint64_t address;
};

int lttng_kernel_probe_location_serialize(
		const struct lttng_kernel_probe_location *location,
		struct lttng_payload *payload);

ssize_t lttng_kernel_probe_location_create_from_payload(
		struct lttng_payload_view *view,
		struct lttng_kernel_probe_location **probe_location);

bool lttng_kernel_probe_location_is_equal(
		const struct lttng_kernel_probe_location *a,
		const struct lttng_kernel_probe_location *b);

struct lttng_kernel_probe_location *lttng_kernel_probe_location_copy(
		const struct lttng_kernel_probe_location *location);

unsigned long lttng_kernel_probe_location_hash(
		const struct lttng_kernel_probe_location *location);

enum lttng_error_code lttng_kernel_probe_location_mi_serialize(
		const struct lttng_kernel_probe_location *location,
		struct mi_writer *writer);

#endif /* LTTNG_KERNEL_PROBE_INTERNAL_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
	3	*
	4	* SPDX-License-Identifier: LGPL-2.1-only
	5	*
	6	*/
	7
	8	#ifndef LTTNG_KERNEL_PROBE_INTERNAL_H
	9	#define LTTNG_KERNEL_PROBE_INTERNAL_H
	10
	11	#include <common/fd-handle.h>
	12	#include <common/macros.h>
	13	#include <lttng/kernel-probe.h>
	14	#include <stdbool.h>
	15	#include <stdint.h>
	16	#include <sys/types.h>
	17
	18	struct lttng_payload;
	19	struct lttng_payload_view;
	20	struct lttng_dynamic_buffer;
	21	struct mi_writer;
	22
	23	typedef bool (*kernel_probe_location_equal_cb)(
	24	const struct lttng_kernel_probe_location *a,
	25	const struct lttng_kernel_probe_location *b);
	26	typedef int (*kernel_probe_location_serialize_cb)(
	27	const struct lttng_kernel_probe_location *kernel_probe_location,
	28	struct lttng_payload *payload);
	29	typedef bool (*kernel_probe_location_equal_cb)(
	30	const struct lttng_kernel_probe_location *a,
	31	const struct lttng_kernel_probe_location *b);
	32	typedef ssize_t (*kernel_probe_location_create_from_payload_cb)(
	33	struct lttng_payload_view *view,
	34	struct lttng_kernel_probe_location **kernel_probe_location);
	35	typedef unsigned long (*kernel_probe_location_hash_cb)(
	36	const struct lttng_kernel_probe_location *location);
	37	typedef enum lttng_error_code (*kernel_probe_location_mi_serialize_cb)(
	38	const struct lttng_kernel_probe_location *location,
	39	struct mi_writer *writer);
	40
	41	struct lttng_kernel_probe_location_comm {
	42	/* enum lttng_kernel_probe_location_type */
	43	int8_t type;
	44	/*
	45	* Payload is composed of, in that order,
	46	* - type-specific payload
	47	*/
	48	char payload[];
	49	} LTTNG_PACKED;
	50
	51	struct lttng_kernel_probe_location_symbol_comm {
	52	/* Includes the trailing \0. */
	53	uint32_t symbol_len;
	54	/* The offset from the symbol. */
	55	uint64_t offset;
	56	/*
	57	* Payload is composed of, in that order,
	58	* - symbol name (with trailing \0).
	59	*/
	60	char payload[];
	61	} LTTNG_PACKED;
	62
	63	struct lttng_kernel_probe_location_address_comm {
	64	uint64_t address;
	65	} LTTNG_PACKED;
	66
	67	/* Common ancestor of all kernel probe locations. */
	68	struct lttng_kernel_probe_location {
	69	enum lttng_kernel_probe_location_type type;
	70	kernel_probe_location_equal_cb equal;
	71	kernel_probe_location_serialize_cb serialize;
	72	kernel_probe_location_hash_cb hash;
	73	kernel_probe_location_mi_serialize_cb mi_serialize;
	74	};
	75
	76	struct lttng_kernel_probe_location_symbol {
	77	struct lttng_kernel_probe_location parent;
	78	char *symbol_name;
	79	uint64_t offset;
	80	};
	81
	82	struct lttng_kernel_probe_location_address {
	83	struct lttng_kernel_probe_location parent;
	84	uint64_t address;
	85	};
	86
	87	int lttng_kernel_probe_location_serialize(
	88	const struct lttng_kernel_probe_location *location,
	89	struct lttng_payload *payload);
	90
	91	ssize_t lttng_kernel_probe_location_create_from_payload(
	92	struct lttng_payload_view *view,
	93	struct lttng_kernel_probe_location **probe_location);
	94
	95	bool lttng_kernel_probe_location_is_equal(
	96	const struct lttng_kernel_probe_location *a,
	97	const struct lttng_kernel_probe_location *b);
	98
	99	struct lttng_kernel_probe_location *lttng_kernel_probe_location_copy(
	100	const struct lttng_kernel_probe_location *location);
	101
	102	unsigned long lttng_kernel_probe_location_hash(
	103	const struct lttng_kernel_probe_location *location);
	104
	105	enum lttng_error_code lttng_kernel_probe_location_mi_serialize(
	106	const struct lttng_kernel_probe_location *location,
	107	struct mi_writer *writer);
	108
	109	#endif /* LTTNG_KERNEL_PROBE_INTERNAL_H */