[lttng-modules.git] / include / lttng / abi.h

/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
 *
 * lttng/abi.h
 *
 * LTTng ABI header
 *
 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_ABI_H
#define _LTTNG_ABI_H

#include <linux/fs.h>

/*
 * Major/minor version of ABI exposed to lttng tools. Major number
 * should be increased when an incompatible ABI change is done.
 */
#define LTTNG_MODULES_ABI_MAJOR_VERSION		2
#define LTTNG_MODULES_ABI_MINOR_VERSION		5

#define LTTNG_KERNEL_SYM_NAME_LEN	256
#define LTTNG_KERNEL_SESSION_NAME_LEN	256
#define LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN	26

enum lttng_kernel_instrumentation {
	LTTNG_KERNEL_TRACEPOINT	= 0,
	LTTNG_KERNEL_KPROBE	= 1,
	LTTNG_KERNEL_FUNCTION	= 2,
	LTTNG_KERNEL_KRETPROBE	= 3,
	LTTNG_KERNEL_NOOP	= 4,	/* not hooked */
	LTTNG_KERNEL_SYSCALL	= 5,
	LTTNG_KERNEL_UPROBE	= 6,
};

/*
 * LTTng consumer mode
 */
enum lttng_kernel_output {
	LTTNG_KERNEL_SPLICE	= 0,
	LTTNG_KERNEL_MMAP	= 1,
};

/*
 * LTTng DebugFS ABI structures.
 */
#define LTTNG_KERNEL_CHANNEL_PADDING	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_channel {
	uint64_t subbuf_size;			/* in bytes */
	uint64_t num_subbuf;
	unsigned int switch_timer_interval;	/* usecs */
	unsigned int read_timer_interval;	/* usecs */
	uint32_t output;			/* enum lttng_kernel_output (splice, mmap) */
	int overwrite;				/* 1: overwrite, 0: discard */
	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
} __attribute__((packed));

struct lttng_kernel_kretprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

/*
 * Either addr is used, or symbol_name and offset.
 */
struct lttng_kernel_kprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

struct lttng_kernel_function_tracer {
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

struct lttng_kernel_uprobe {
	int fd;
} __attribute__((packed));

struct lttng_kernel_event_callsite_uprobe {
	uint64_t offset;
} __attribute__((packed));

struct lttng_kernel_event_callsite {
	union {
		struct lttng_kernel_event_callsite_uprobe uprobe;
	} u;
} __attribute__((packed));

enum lttng_kernel_syscall_entryexit {
	LTTNG_KERNEL_SYSCALL_ENTRYEXIT = 0,
	LTTNG_KERNEL_SYSCALL_ENTRY = 1,		/* Not implemented. */
	LTTNG_KERNEL_SYSCALL_EXIT = 2,		/* Not implemented. */
};

enum lttng_kernel_syscall_abi {
	LTTNG_KERNEL_SYSCALL_ABI_ALL = 0,
	LTTNG_KERNEL_SYSCALL_ABI_NATIVE = 1,	/* Not implemented. */
	LTTNG_KERNEL_SYSCALL_ABI_COMPAT = 2,	/* Not implemented. */
};

enum lttng_kernel_syscall_match {
	LTTNG_SYSCALL_MATCH_NAME = 0,
	LTTNG_SYSCALL_MATCH_NR = 1,		/* Not implemented. */
};

struct lttng_kernel_syscall {
	uint8_t entryexit;	/* enum lttng_kernel_syscall_entryexit */
	uint8_t abi;		/* enum lttng_kernel_syscall_abi */
	uint8_t match;		/* enum lttng_kernel_syscall_match */
	uint8_t padding;
	uint32_t nr;		/* For LTTNG_SYSCALL_MATCH_NR */
} __attribute__((packed));

/*
 * For syscall tracing, name = "*" means "enable all".
 */
#define LTTNG_KERNEL_EVENT_PADDING1	8
#define LTTNG_KERNEL_EVENT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_event {
	char name[LTTNG_KERNEL_SYM_NAME_LEN];	/* event name */
	uint32_t instrumentation;		/* enum lttng_kernel_instrumentation */
	uint64_t token;				/* User-provided token */
	char padding[LTTNG_KERNEL_EVENT_PADDING1];

	/* Per instrumentation type configuration */
	union {
		struct lttng_kernel_kretprobe kretprobe;
		struct lttng_kernel_kprobe kprobe;
		struct lttng_kernel_function_tracer ftrace;
		struct lttng_kernel_uprobe uprobe;
		struct lttng_kernel_syscall syscall;
		char padding[LTTNG_KERNEL_EVENT_PADDING2];
	} u;
} __attribute__((packed));

struct lttng_kernel_tracer_version {
	uint32_t major;
	uint32_t minor;
	uint32_t patchlevel;
} __attribute__((packed));

struct lttng_kernel_tracer_abi_version {
	uint32_t major;
	uint32_t minor;
} __attribute__((packed));

struct lttng_kernel_session_name {
	char name[LTTNG_KERNEL_SESSION_NAME_LEN];
} __attribute__((packed));

struct lttng_kernel_session_creation_time {
	char iso8601[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
} __attribute__((packed));

enum lttng_kernel_calibrate_type {
	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
};

struct lttng_kernel_calibrate {
	uint32_t type;	/* enum lttng_kernel_calibrate_type (input) */
} __attribute__((packed));

struct lttng_kernel_syscall_mask {
	uint32_t len;	/* in bits */
	char mask[];
} __attribute__((packed));

enum lttng_kernel_context_type {
	LTTNG_KERNEL_CONTEXT_PID		= 0,
	LTTNG_KERNEL_CONTEXT_PERF_COUNTER	= 1,
	LTTNG_KERNEL_CONTEXT_PROCNAME		= 2,
	LTTNG_KERNEL_CONTEXT_PRIO		= 3,
	LTTNG_KERNEL_CONTEXT_NICE		= 4,
	LTTNG_KERNEL_CONTEXT_VPID		= 5,
	LTTNG_KERNEL_CONTEXT_TID		= 6,
	LTTNG_KERNEL_CONTEXT_VTID		= 7,
	LTTNG_KERNEL_CONTEXT_PPID		= 8,
	LTTNG_KERNEL_CONTEXT_VPPID		= 9,
	LTTNG_KERNEL_CONTEXT_HOSTNAME		= 10,
	LTTNG_KERNEL_CONTEXT_CPU_ID		= 11,
	LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE	= 12,
	LTTNG_KERNEL_CONTEXT_PREEMPTIBLE	= 13,
	LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE	= 14,
	LTTNG_KERNEL_CONTEXT_MIGRATABLE		= 15,
	LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL	= 16,
	LTTNG_KERNEL_CONTEXT_CALLSTACK_USER	= 17,
	LTTNG_KERNEL_CONTEXT_CGROUP_NS		= 18,
	LTTNG_KERNEL_CONTEXT_IPC_NS		= 19,
	LTTNG_KERNEL_CONTEXT_MNT_NS		= 20,
	LTTNG_KERNEL_CONTEXT_NET_NS		= 21,
	LTTNG_KERNEL_CONTEXT_PID_NS		= 22,
	LTTNG_KERNEL_CONTEXT_USER_NS		= 23,
	LTTNG_KERNEL_CONTEXT_UTS_NS		= 24,
	LTTNG_KERNEL_CONTEXT_UID		= 25,
	LTTNG_KERNEL_CONTEXT_EUID		= 26,
	LTTNG_KERNEL_CONTEXT_SUID		= 27,
	LTTNG_KERNEL_CONTEXT_GID		= 28,
	LTTNG_KERNEL_CONTEXT_EGID		= 29,
	LTTNG_KERNEL_CONTEXT_SGID		= 30,
	LTTNG_KERNEL_CONTEXT_VUID		= 31,
	LTTNG_KERNEL_CONTEXT_VEUID		= 32,
	LTTNG_KERNEL_CONTEXT_VSUID		= 33,
	LTTNG_KERNEL_CONTEXT_VGID		= 34,
	LTTNG_KERNEL_CONTEXT_VEGID		= 35,
	LTTNG_KERNEL_CONTEXT_VSGID		= 36,
	LTTNG_KERNEL_CONTEXT_TIME_NS		= 37,
};

struct lttng_kernel_perf_counter_ctx {
	uint32_t type;
	uint64_t config;
	char name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

#define LTTNG_KERNEL_CONTEXT_PADDING1	16
#define LTTNG_KERNEL_CONTEXT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_context {
	uint32_t ctx;	/*enum lttng_kernel_context_type */
	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];

	union {
		struct lttng_kernel_perf_counter_ctx perf_counter;
		char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
	} u;
} __attribute__((packed));

#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN		65536
struct lttng_kernel_filter_bytecode {
	uint32_t len;
	uint32_t reloc_offset;
	uint64_t seqnum;
	char data[0];
} __attribute__((packed));

enum lttng_kernel_tracker_type {
	LTTNG_KERNEL_TRACKER_UNKNOWN		= -1,

	LTTNG_KERNEL_TRACKER_PID		= 0,
	LTTNG_KERNEL_TRACKER_VPID		= 1,
	LTTNG_KERNEL_TRACKER_UID		= 2,
	LTTNG_KERNEL_TRACKER_VUID		= 3,
	LTTNG_KERNEL_TRACKER_GID		= 4,
	LTTNG_KERNEL_TRACKER_VGID		= 5,
};

struct lttng_kernel_tracker_args {
	uint32_t type;	/* enum lttng_kernel_tracker_type */
	int32_t id;
};

/* LTTng file descriptor ioctl */
/* lttng/abi-old.h reserve 0x40, 0x41, 0x42, 0x43, and 0x44. */
#define LTTNG_KERNEL_SESSION			_IO(0xF6, 0x45)
#define LTTNG_KERNEL_TRACER_VERSION		\
	_IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
#define LTTNG_KERNEL_TRACEPOINT_LIST		_IO(0xF6, 0x47)
#define LTTNG_KERNEL_WAIT_QUIESCENT		_IO(0xF6, 0x48)
#define LTTNG_KERNEL_CALIBRATE			\
	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
#define LTTNG_KERNEL_SYSCALL_LIST		_IO(0xF6, 0x4A)
#define LTTNG_KERNEL_TRACER_ABI_VERSION		\
	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
#define LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_CREATE    _IO(0xF6, 0x4C)

/* Session FD ioctl */
/* lttng/abi-old.h reserve 0x50, 0x51, 0x52, and 0x53. */
#define LTTNG_KERNEL_METADATA			\
	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
#define LTTNG_KERNEL_CHANNEL			\
	_IOW(0xF6, 0x55, struct lttng_kernel_channel)
#define LTTNG_KERNEL_SESSION_START		_IO(0xF6, 0x56)
#define LTTNG_KERNEL_SESSION_STOP		_IO(0xF6, 0x57)
#define LTTNG_KERNEL_SESSION_TRACK_PID		\
	_IOR(0xF6, 0x58, int32_t)
#define LTTNG_KERNEL_SESSION_UNTRACK_PID	\
	_IOR(0xF6, 0x59, int32_t)

/*
 * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
 * are generating two different ioctl numbers, but this was not done on
 * purpose. We should generally try to avoid those duplications.
 */
#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS	_IO(0xF6, 0x58)
#define LTTNG_KERNEL_SESSION_METADATA_REGEN	_IO(0xF6, 0x59)

/* lttng/abi-old.h reserve 0x5A and 0x5B. */
#define LTTNG_KERNEL_SESSION_STATEDUMP		_IO(0xF6, 0x5C)
#define LTTNG_KERNEL_SESSION_SET_NAME		\
	_IOR(0xF6, 0x5D, struct lttng_kernel_session_name)
#define LTTNG_KERNEL_SESSION_SET_CREATION_TIME		\
	_IOR(0xF6, 0x5E, struct lttng_kernel_session_creation_time)

/* Channel FD ioctl */
/* lttng/abi-old.h reserve 0x60 and 0x61. */
#define LTTNG_KERNEL_STREAM			_IO(0xF6, 0x62)
#define LTTNG_KERNEL_EVENT			\
	_IOW(0xF6, 0x63, struct lttng_kernel_event)
#define LTTNG_KERNEL_SYSCALL_MASK		\
	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)

/* Event and Channel FD ioctl */
/* lttng/abi-old.h reserve 0x70. */
#define LTTNG_KERNEL_CONTEXT			\
	_IOW(0xF6, 0x71, struct lttng_kernel_context)

/* Event, Channel and Session ioctl */
/* lttng/abi-old.h reserve 0x80 and 0x81. */
#define LTTNG_KERNEL_ENABLE			_IO(0xF6, 0x82)
#define LTTNG_KERNEL_DISABLE			_IO(0xF6, 0x83)

/* Event FD ioctl */
#define LTTNG_KERNEL_FILTER			_IO(0xF6, 0x90)
#define LTTNG_KERNEL_ADD_CALLSITE		_IO(0xF6, 0x91)

/* Session FD ioctl (continued) */
#define LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS	\
	_IOR(0xF6, 0xA0, struct lttng_kernel_tracker_args)
#define LTTNG_KERNEL_SESSION_TRACK_ID		\
	_IOR(0xF6, 0xA1, struct lttng_kernel_tracker_args)
#define LTTNG_KERNEL_SESSION_UNTRACK_ID		\
	_IOR(0xF6, 0xA2, struct lttng_kernel_tracker_args)

/*
 * LTTng-specific ioctls for the lib ringbuffer.
 *
 * Operations applying to the current sub-buffer need to occur between
 * a get/put or get_next/put_next ioctl pair.
 */

/* returns the timestamp begin of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN	_IOR(0xF6, 0x20, uint64_t)
/* returns the timestamp end of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END	_IOR(0xF6, 0x21, uint64_t)
/* returns the number of events discarded of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED	_IOR(0xF6, 0x22, uint64_t)
/* returns the packet payload size of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE	_IOR(0xF6, 0x23, uint64_t)
/* returns the packet size of the current sub-buffer*/
#define LTTNG_RING_BUFFER_GET_PACKET_SIZE	_IOR(0xF6, 0x24, uint64_t)
/* returns the stream id (invariant for the stream) */
#define LTTNG_RING_BUFFER_GET_STREAM_ID		_IOR(0xF6, 0x25, uint64_t)
/* returns the current timestamp as perceived from the tracer */
#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP	_IOR(0xF6, 0x26, uint64_t)
/* returns the packet sequence number of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_SEQ_NUM		_IOR(0xF6, 0x27, uint64_t)
/* returns the stream instance id (invariant for the stream) */
#define LTTNG_RING_BUFFER_INSTANCE_ID		_IOR(0xF6, 0x28, uint64_t)

#ifdef CONFIG_COMPAT
/* returns the timestamp begin of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
/* returns the timestamp end of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
/* returns the number of events discarded of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
/* returns the packet payload size of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
/* returns the packet size of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
	LTTNG_RING_BUFFER_GET_PACKET_SIZE
/* returns the stream id (invariant for the stream) */
#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
	LTTNG_RING_BUFFER_GET_STREAM_ID
/* returns the current timestamp as perceived from the tracer */
#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
/* returns the packet sequence number of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM	\
	LTTNG_RING_BUFFER_GET_SEQ_NUM
/* returns the stream instance id (invariant for the stream) */
#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID	\
	LTTNG_RING_BUFFER_INSTANCE_ID
#endif /* CONFIG_COMPAT */

#endif /* _LTTNG_ABI_H */
Commit	Line	Data
	1	/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
	2	*
	3	* lttng/abi.h
	4	*
	5	* LTTng ABI header
	6	*
	7	* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*/
	9
	10	#ifndef _LTTNG_ABI_H
	11	#define _LTTNG_ABI_H
	12
	13	#include <linux/fs.h>
	14
	15	/*
	16	* Major/minor version of ABI exposed to lttng tools. Major number
	17	* should be increased when an incompatible ABI change is done.
	18	*/
	19	#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
	20	#define LTTNG_MODULES_ABI_MINOR_VERSION 5
	21
	22	#define LTTNG_KERNEL_SYM_NAME_LEN 256
	23	#define LTTNG_KERNEL_SESSION_NAME_LEN 256
	24	#define LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN 26
	25
	26	enum lttng_kernel_instrumentation {
	27	LTTNG_KERNEL_TRACEPOINT = 0,
	28	LTTNG_KERNEL_KPROBE = 1,
	29	LTTNG_KERNEL_FUNCTION = 2,
	30	LTTNG_KERNEL_KRETPROBE = 3,
	31	LTTNG_KERNEL_NOOP = 4, /* not hooked */
	32	LTTNG_KERNEL_SYSCALL = 5,
	33	LTTNG_KERNEL_UPROBE = 6,
	34	};
	35
	36	/*
	37	* LTTng consumer mode
	38	*/
	39	enum lttng_kernel_output {
	40	LTTNG_KERNEL_SPLICE = 0,
	41	LTTNG_KERNEL_MMAP = 1,
	42	};
	43
	44	/*
	45	* LTTng DebugFS ABI structures.
	46	*/
	47	#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
	48	struct lttng_kernel_channel {
	49	uint64_t subbuf_size; /* in bytes */
	50	uint64_t num_subbuf;
	51	unsigned int switch_timer_interval; /* usecs */
	52	unsigned int read_timer_interval; /* usecs */
	53	uint32_t output; /* enum lttng_kernel_output (splice, mmap) */
	54	int overwrite; /* 1: overwrite, 0: discard */
	55	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
	56	} __attribute__((packed));
	57
	58	struct lttng_kernel_kretprobe {
	59	uint64_t addr;
	60
	61	uint64_t offset;
	62	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	63	} __attribute__((packed));
	64
	65	/*
	66	* Either addr is used, or symbol_name and offset.
	67	*/
	68	struct lttng_kernel_kprobe {
	69	uint64_t addr;
	70
	71	uint64_t offset;
	72	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	73	} __attribute__((packed));
	74
	75	struct lttng_kernel_function_tracer {
	76	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	77	} __attribute__((packed));
	78
	79	struct lttng_kernel_uprobe {
	80	int fd;
	81	} __attribute__((packed));
	82
	83	struct lttng_kernel_event_callsite_uprobe {
	84	uint64_t offset;
	85	} __attribute__((packed));
	86
	87	struct lttng_kernel_event_callsite {
	88	union {
	89	struct lttng_kernel_event_callsite_uprobe uprobe;
	90	} u;
	91	} __attribute__((packed));
	92
	93	enum lttng_kernel_syscall_entryexit {
	94	LTTNG_KERNEL_SYSCALL_ENTRYEXIT = 0,
	95	LTTNG_KERNEL_SYSCALL_ENTRY = 1, /* Not implemented. */
	96	LTTNG_KERNEL_SYSCALL_EXIT = 2, /* Not implemented. */
	97	};
	98
	99	enum lttng_kernel_syscall_abi {
	100	LTTNG_KERNEL_SYSCALL_ABI_ALL = 0,
	101	LTTNG_KERNEL_SYSCALL_ABI_NATIVE = 1, /* Not implemented. */
	102	LTTNG_KERNEL_SYSCALL_ABI_COMPAT = 2, /* Not implemented. */
	103	};
	104
	105	enum lttng_kernel_syscall_match {
	106	LTTNG_SYSCALL_MATCH_NAME = 0,
	107	LTTNG_SYSCALL_MATCH_NR = 1, /* Not implemented. */
	108	};
	109
	110	struct lttng_kernel_syscall {
	111	uint8_t entryexit; /* enum lttng_kernel_syscall_entryexit */
	112	uint8_t abi; /* enum lttng_kernel_syscall_abi */
	113	uint8_t match; /* enum lttng_kernel_syscall_match */
	114	uint8_t padding;
	115	uint32_t nr; /* For LTTNG_SYSCALL_MATCH_NR */
	116	} __attribute__((packed));
	117
	118	/*
	119	* For syscall tracing, name = "*" means "enable all".
	120	*/
	121	#define LTTNG_KERNEL_EVENT_PADDING1 8
	122	#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	123	struct lttng_kernel_event {
	124	char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
	125	uint32_t instrumentation; /* enum lttng_kernel_instrumentation */
	126	uint64_t token; /* User-provided token */
	127	char padding[LTTNG_KERNEL_EVENT_PADDING1];
	128
	129	/* Per instrumentation type configuration */
	130	union {
	131	struct lttng_kernel_kretprobe kretprobe;
	132	struct lttng_kernel_kprobe kprobe;
	133	struct lttng_kernel_function_tracer ftrace;
	134	struct lttng_kernel_uprobe uprobe;
	135	struct lttng_kernel_syscall syscall;
	136	char padding[LTTNG_KERNEL_EVENT_PADDING2];
	137	} u;
	138	} __attribute__((packed));
	139
	140	struct lttng_kernel_tracer_version {
	141	uint32_t major;
	142	uint32_t minor;
	143	uint32_t patchlevel;
	144	} __attribute__((packed));
	145
	146	struct lttng_kernel_tracer_abi_version {
	147	uint32_t major;
	148	uint32_t minor;
	149	} __attribute__((packed));
	150
	151	struct lttng_kernel_session_name {
	152	char name[LTTNG_KERNEL_SESSION_NAME_LEN];
	153	} __attribute__((packed));
	154
	155	struct lttng_kernel_session_creation_time {
	156	char iso8601[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
	157	} __attribute__((packed));
	158
	159	enum lttng_kernel_calibrate_type {
	160	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
	161	};
	162
	163	struct lttng_kernel_calibrate {
	164	uint32_t type; /* enum lttng_kernel_calibrate_type (input) */
	165	} __attribute__((packed));
	166
	167	struct lttng_kernel_syscall_mask {
	168	uint32_t len; /* in bits */
	169	char mask[];
	170	} __attribute__((packed));
	171
	172	enum lttng_kernel_context_type {
	173	LTTNG_KERNEL_CONTEXT_PID = 0,
	174	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
	175	LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
	176	LTTNG_KERNEL_CONTEXT_PRIO = 3,
	177	LTTNG_KERNEL_CONTEXT_NICE = 4,
	178	LTTNG_KERNEL_CONTEXT_VPID = 5,
	179	LTTNG_KERNEL_CONTEXT_TID = 6,
	180	LTTNG_KERNEL_CONTEXT_VTID = 7,
	181	LTTNG_KERNEL_CONTEXT_PPID = 8,
	182	LTTNG_KERNEL_CONTEXT_VPPID = 9,
	183	LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
	184	LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
	185	LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
	186	LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
	187	LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
	188	LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
	189	LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
	190	LTTNG_KERNEL_CONTEXT_CALLSTACK_USER = 17,
	191	LTTNG_KERNEL_CONTEXT_CGROUP_NS = 18,
	192	LTTNG_KERNEL_CONTEXT_IPC_NS = 19,
	193	LTTNG_KERNEL_CONTEXT_MNT_NS = 20,
	194	LTTNG_KERNEL_CONTEXT_NET_NS = 21,
	195	LTTNG_KERNEL_CONTEXT_PID_NS = 22,
	196	LTTNG_KERNEL_CONTEXT_USER_NS = 23,
	197	LTTNG_KERNEL_CONTEXT_UTS_NS = 24,
	198	LTTNG_KERNEL_CONTEXT_UID = 25,
	199	LTTNG_KERNEL_CONTEXT_EUID = 26,
	200	LTTNG_KERNEL_CONTEXT_SUID = 27,
	201	LTTNG_KERNEL_CONTEXT_GID = 28,
	202	LTTNG_KERNEL_CONTEXT_EGID = 29,
	203	LTTNG_KERNEL_CONTEXT_SGID = 30,
	204	LTTNG_KERNEL_CONTEXT_VUID = 31,
	205	LTTNG_KERNEL_CONTEXT_VEUID = 32,
	206	LTTNG_KERNEL_CONTEXT_VSUID = 33,
	207	LTTNG_KERNEL_CONTEXT_VGID = 34,
	208	LTTNG_KERNEL_CONTEXT_VEGID = 35,
	209	LTTNG_KERNEL_CONTEXT_VSGID = 36,
	210	LTTNG_KERNEL_CONTEXT_TIME_NS = 37,
	211	};
	212
	213	struct lttng_kernel_perf_counter_ctx {
	214	uint32_t type;
	215	uint64_t config;
	216	char name[LTTNG_KERNEL_SYM_NAME_LEN];
	217	} __attribute__((packed));
	218
	219	#define LTTNG_KERNEL_CONTEXT_PADDING1 16
	220	#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	221	struct lttng_kernel_context {
	222	uint32_t ctx; /enum lttng_kernel_context_type /
	223	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
	224
	225	union {
	226	struct lttng_kernel_perf_counter_ctx perf_counter;
	227	char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
	228	} u;
	229	} __attribute__((packed));
	230
	231	#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
	232	struct lttng_kernel_filter_bytecode {
	233	uint32_t len;
	234	uint32_t reloc_offset;
	235	uint64_t seqnum;
	236	char data[0];
	237	} __attribute__((packed));
	238
	239	enum lttng_kernel_tracker_type {
	240	LTTNG_KERNEL_TRACKER_UNKNOWN = -1,
	241
	242	LTTNG_KERNEL_TRACKER_PID = 0,
	243	LTTNG_KERNEL_TRACKER_VPID = 1,
	244	LTTNG_KERNEL_TRACKER_UID = 2,
	245	LTTNG_KERNEL_TRACKER_VUID = 3,
	246	LTTNG_KERNEL_TRACKER_GID = 4,
	247	LTTNG_KERNEL_TRACKER_VGID = 5,
	248	};
	249
	250	struct lttng_kernel_tracker_args {
	251	uint32_t type; /* enum lttng_kernel_tracker_type */
	252	int32_t id;
	253	};
	254
	255	/* LTTng file descriptor ioctl */
	256	/* lttng/abi-old.h reserve 0x40, 0x41, 0x42, 0x43, and 0x44. */
	257	#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
	258	#define LTTNG_KERNEL_TRACER_VERSION \
	259	_IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
	260	#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
	261	#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
	262	#define LTTNG_KERNEL_CALIBRATE \
	263	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
	264	#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
	265	#define LTTNG_KERNEL_TRACER_ABI_VERSION \
	266	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
	267	#define LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_CREATE _IO(0xF6, 0x4C)
	268
	269	/* Session FD ioctl */
	270	/* lttng/abi-old.h reserve 0x50, 0x51, 0x52, and 0x53. */
	271	#define LTTNG_KERNEL_METADATA \
	272	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
	273	#define LTTNG_KERNEL_CHANNEL \
	274	_IOW(0xF6, 0x55, struct lttng_kernel_channel)
	275	#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
	276	#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
	277	#define LTTNG_KERNEL_SESSION_TRACK_PID \
	278	_IOR(0xF6, 0x58, int32_t)
	279	#define LTTNG_KERNEL_SESSION_UNTRACK_PID \
	280	_IOR(0xF6, 0x59, int32_t)
	281
	282	/*
	283	* ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
	284	* are generating two different ioctl numbers, but this was not done on
	285	* purpose. We should generally try to avoid those duplications.
	286	*/
	287	#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
	288	#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
	289
	290	/* lttng/abi-old.h reserve 0x5A and 0x5B. */
	291	#define LTTNG_KERNEL_SESSION_STATEDUMP _IO(0xF6, 0x5C)
	292	#define LTTNG_KERNEL_SESSION_SET_NAME \
	293	_IOR(0xF6, 0x5D, struct lttng_kernel_session_name)
	294	#define LTTNG_KERNEL_SESSION_SET_CREATION_TIME \
	295	_IOR(0xF6, 0x5E, struct lttng_kernel_session_creation_time)
	296
	297	/* Channel FD ioctl */
	298	/* lttng/abi-old.h reserve 0x60 and 0x61. */
	299	#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
	300	#define LTTNG_KERNEL_EVENT \
	301	_IOW(0xF6, 0x63, struct lttng_kernel_event)
	302	#define LTTNG_KERNEL_SYSCALL_MASK \
	303	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
	304
	305	/* Event and Channel FD ioctl */
	306	/* lttng/abi-old.h reserve 0x70. */
	307	#define LTTNG_KERNEL_CONTEXT \
	308	_IOW(0xF6, 0x71, struct lttng_kernel_context)
	309
	310	/* Event, Channel and Session ioctl */
	311	/* lttng/abi-old.h reserve 0x80 and 0x81. */
	312	#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
	313	#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
	314
	315	/* Event FD ioctl */
	316	#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
	317	#define LTTNG_KERNEL_ADD_CALLSITE _IO(0xF6, 0x91)
	318
	319	/* Session FD ioctl (continued) */
	320	#define LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS \
	321	_IOR(0xF6, 0xA0, struct lttng_kernel_tracker_args)
	322	#define LTTNG_KERNEL_SESSION_TRACK_ID \
	323	_IOR(0xF6, 0xA1, struct lttng_kernel_tracker_args)
	324	#define LTTNG_KERNEL_SESSION_UNTRACK_ID \
	325	_IOR(0xF6, 0xA2, struct lttng_kernel_tracker_args)
	326
	327	/*
	328	* LTTng-specific ioctls for the lib ringbuffer.
	329	*
	330	* Operations applying to the current sub-buffer need to occur between
	331	* a get/put or get_next/put_next ioctl pair.
	332	*/
	333
	334	/* returns the timestamp begin of the current sub-buffer */
	335	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
	336	/* returns the timestamp end of the current sub-buffer */
	337	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
	338	/* returns the number of events discarded of the current sub-buffer */
	339	#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
	340	/* returns the packet payload size of the current sub-buffer */
	341	#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
	342	/* returns the packet size of the current sub-buffer*/
	343	#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
	344	/* returns the stream id (invariant for the stream) */
	345	#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
	346	/* returns the current timestamp as perceived from the tracer */
	347	#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
	348	/* returns the packet sequence number of the current sub-buffer */
	349	#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
	350	/* returns the stream instance id (invariant for the stream) */
	351	#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
	352
	353	#ifdef CONFIG_COMPAT
	354	/* returns the timestamp begin of the current sub-buffer */
	355	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	356	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
	357	/* returns the timestamp end of the current sub-buffer */
	358	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	359	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
	360	/* returns the number of events discarded of the current sub-buffer */
	361	#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
	362	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
	363	/* returns the packet payload size of the current sub-buffer */
	364	#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
	365	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
	366	/* returns the packet size of the current sub-buffer */
	367	#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
	368	LTTNG_RING_BUFFER_GET_PACKET_SIZE
	369	/* returns the stream id (invariant for the stream) */
	370	#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
	371	LTTNG_RING_BUFFER_GET_STREAM_ID
	372	/* returns the current timestamp as perceived from the tracer */
	373	#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
	374	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
	375	/* returns the packet sequence number of the current sub-buffer */
	376	#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM \
	377	LTTNG_RING_BUFFER_GET_SEQ_NUM
	378	/* returns the stream instance id (invariant for the stream) */
	379	#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID \
	380	LTTNG_RING_BUFFER_INSTANCE_ID
	381	#endif /* CONFIG_COMPAT */
	382
	383	#endif /* _LTTNG_ABI_H */