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

/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
 *
 * 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		3

#define LTTNG_KERNEL_SYM_NAME_LEN	256

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 */
	enum lttng_kernel_output 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));

/*
 * For syscall tracing, name = "*" means "enable all".
 */
#define LTTNG_KERNEL_EVENT_PADDING1	16
#define LTTNG_KERNEL_EVENT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_event {
	char name[LTTNG_KERNEL_SYM_NAME_LEN];	/* event name */
	enum lttng_kernel_instrumentation instrumentation;
	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;
		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));

enum lttng_kernel_calibrate_type {
	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
};

struct lttng_kernel_calibrate {
	enum lttng_kernel_calibrate_type type;	/* 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,
};

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 {
	enum lttng_kernel_context_type ctx;
	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));

/* LTTng file descriptor ioctl */
#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)

/* Session FD ioctl */
#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)
/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
#define LTTNG_KERNEL_SESSION_STATEDUMP		_IO(0xF6, 0x5C)

/* Channel FD ioctl */
#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 */
#define LTTNG_KERNEL_CONTEXT			\
	_IOW(0xF6, 0x71, struct lttng_kernel_context)

/* Event, Channel and Session ioctl */
#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)

/*
 * 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
9f36eaed MJ	1	/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
9f36eaed MJ	2	*
e8951e63	3	* lttng-abi.h
57a13317	4	*
80996790	5	* LTTng ABI header
17baffe2	6	*
886d51a3	7	* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
57a13317 MD	8	*/
57a13317 MD	9
9f36eaed MJ	10	#ifndef _LTTNG_ABI_H
	11	#define _LTTNG_ABI_H
	12
57a13317 MD	13	#include <linux/fs.h>
57a13317 MD	14
42cabb80 MD	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	*/
3c997079	19	#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
4993071a	20	#define LTTNG_MODULES_ABI_MINOR_VERSION 3
42cabb80	21
f8695253	22	#define LTTNG_KERNEL_SYM_NAME_LEN 256
d6d808f3	23
38d024ae	24	enum lttng_kernel_instrumentation {
4c183524 MD	25	LTTNG_KERNEL_TRACEPOINT = 0,
	26	LTTNG_KERNEL_KPROBE = 1,
	27	LTTNG_KERNEL_FUNCTION = 2,
7371f44c	28	LTTNG_KERNEL_KRETPROBE = 3,
1ec65de1	29	LTTNG_KERNEL_NOOP = 4, /* not hooked */
43880ee8	30	LTTNG_KERNEL_SYSCALL = 5,
149b9a9d	31	LTTNG_KERNEL_UPROBE = 6,
57a13317 MD	32	};
57a13317 MD	33
96ba7208 JD	34	/*
	35	* LTTng consumer mode
	36	*/
	37	enum lttng_kernel_output {
	38	LTTNG_KERNEL_SPLICE = 0,
	39	LTTNG_KERNEL_MMAP = 1,
	40	};
	41
57a13317 MD	42	/*
	43	* LTTng DebugFS ABI structures.
	44	*/
8e099bae	45	#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
38d024ae	46	struct lttng_kernel_channel {
9e245ead	47	uint64_t subbuf_size; /* in bytes */
80c16bcf	48	uint64_t num_subbuf;
9e245ead MD	49	unsigned int switch_timer_interval; /* usecs */
9e245ead MD	50	unsigned int read_timer_interval; /* usecs */
96ba7208	51	enum lttng_kernel_output output; /* splice, mmap */
6dccd6c1	52	int overwrite; /* 1: overwrite, 0: discard */
8e099bae	53	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
1a598612	54	} __attribute__((packed));
57a13317	55
7371f44c MD	56	struct lttng_kernel_kretprobe {
	57	uint64_t addr;
	58
	59	uint64_t offset;
f8695253	60	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	61	} __attribute__((packed));
7371f44c	62
38d024ae MD	63	/*
	64	* Either addr is used, or symbol_name and offset.
	65	*/
	66	struct lttng_kernel_kprobe {
80c16bcf	67	uint64_t addr;
38d024ae	68
80c16bcf	69	uint64_t offset;
f8695253	70	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	71	} __attribute__((packed));
d6d808f3	72
f17701fb	73	struct lttng_kernel_function_tracer {
f8695253	74	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	75	} __attribute__((packed));
f17701fb	76
149b9a9d	77	struct lttng_kernel_uprobe {
56377c91	78	int fd;
3aed4dca FD	79	} __attribute__((packed));
	80
	81	struct lttng_kernel_event_callsite_uprobe {
149b9a9d YB	82	uint64_t offset;
	83	} __attribute__((packed));
	84
3aed4dca FD	85	struct lttng_kernel_event_callsite {
	86	union {
	87	struct lttng_kernel_event_callsite_uprobe uprobe;
	88	} u;
	89	} __attribute__((packed));
	90
43880ee8	91	/*
3c997079	92	* For syscall tracing, name = "*" means "enable all".
43880ee8	93	*/
8e099bae MD	94	#define LTTNG_KERNEL_EVENT_PADDING1 16
8e099bae MD	95	#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
d6d808f3	96	struct lttng_kernel_event {
f8695253	97	char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
d6d808f3	98	enum lttng_kernel_instrumentation instrumentation;
8e099bae MD	99	char padding[LTTNG_KERNEL_EVENT_PADDING1];
8e099bae MD	100
d6d808f3 MD	101	/* Per instrumentation type configuration */
d6d808f3 MD	102	union {
7371f44c	103	struct lttng_kernel_kretprobe kretprobe;
d6d808f3	104	struct lttng_kernel_kprobe kprobe;
f17701fb	105	struct lttng_kernel_function_tracer ftrace;
149b9a9d	106	struct lttng_kernel_uprobe uprobe;
8e099bae	107	char padding[LTTNG_KERNEL_EVENT_PADDING2];
d6d808f3	108	} u;
1a598612	109	} __attribute__((packed));
c099397a	110
80c16bcf	111	struct lttng_kernel_tracer_version {
c6c9e10f MD	112	uint32_t major;
c6c9e10f MD	113	uint32_t minor;
80c16bcf	114	uint32_t patchlevel;
1a598612	115	} __attribute__((packed));
80c16bcf	116
42cabb80 MD	117	struct lttng_kernel_tracer_abi_version {
	118	uint32_t major;
	119	uint32_t minor;
	120	} __attribute__((packed));
	121
3db41b2c MD	122	enum lttng_kernel_calibrate_type {
3db41b2c MD	123	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
57105fc2 MD	124	};
57105fc2 MD	125
3db41b2c MD	126	struct lttng_kernel_calibrate {
3db41b2c MD	127	enum lttng_kernel_calibrate_type type; /* type (input) */
1a598612	128	} __attribute__((packed));
57105fc2	129
12e579db MD	130	struct lttng_kernel_syscall_mask {
	131	uint32_t len; /* in bits */
	132	char mask[];
	133	} __attribute__((packed));
	134
12a313a5	135	enum lttng_kernel_context_type {
4c183524 MD	136	LTTNG_KERNEL_CONTEXT_PID = 0,
4c183524 MD	137	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
a2563e83	138	LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
4c183524 MD	139	LTTNG_KERNEL_CONTEXT_PRIO = 3,
	140	LTTNG_KERNEL_CONTEXT_NICE = 4,
	141	LTTNG_KERNEL_CONTEXT_VPID = 5,
	142	LTTNG_KERNEL_CONTEXT_TID = 6,
	143	LTTNG_KERNEL_CONTEXT_VTID = 7,
	144	LTTNG_KERNEL_CONTEXT_PPID = 8,
	145	LTTNG_KERNEL_CONTEXT_VPPID = 9,
975da2c0	146	LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
b3699d90	147	LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
79150a49 JD	148	LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
	149	LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
	150	LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
	151	LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
2fa2d39a FG	152	LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
2fa2d39a FG	153	LTTNG_KERNEL_CONTEXT_CALLSTACK_USER = 17,
45b27d78 MJ	154	LTTNG_KERNEL_CONTEXT_CGROUP_NS = 18,
	155	LTTNG_KERNEL_CONTEXT_IPC_NS = 19,
	156	LTTNG_KERNEL_CONTEXT_MNT_NS = 20,
	157	LTTNG_KERNEL_CONTEXT_NET_NS = 21,
	158	LTTNG_KERNEL_CONTEXT_PID_NS = 22,
	159	LTTNG_KERNEL_CONTEXT_USER_NS = 23,
	160	LTTNG_KERNEL_CONTEXT_UTS_NS = 24,
8070f5c0 MD	161	};
	162
	163	struct lttng_kernel_perf_counter_ctx {
	164	uint32_t type;
	165	uint64_t config;
f8695253	166	char name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	167	} __attribute__((packed));
8070f5c0	168
8e099bae MD	169	#define LTTNG_KERNEL_CONTEXT_PADDING1 16
8e099bae MD	170	#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
8070f5c0	171	struct lttng_kernel_context {
12a313a5	172	enum lttng_kernel_context_type ctx;
8e099bae MD	173	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
8e099bae MD	174
8070f5c0	175	union {
8070f5c0	176	struct lttng_kernel_perf_counter_ctx perf_counter;
8e099bae	177	char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
8070f5c0	178	} u;
1a598612	179	} __attribute__((packed));
8070f5c0	180
f127e61e	181	#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
07dfc1d0 MD	182	struct lttng_kernel_filter_bytecode {
	183	uint32_t len;
	184	uint32_t reloc_offset;
	185	uint64_t seqnum;
	186	char data[0];
	187	} __attribute__((packed));
	188
33749530	189	/* LTTng file descriptor ioctl */
6dccd6c1	190	#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
33749530	191	#define LTTNG_KERNEL_TRACER_VERSION \
6dccd6c1 JD	192	_IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
	193	#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
	194	#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
57105fc2	195	#define LTTNG_KERNEL_CALIBRATE \
6dccd6c1	196	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
29c956bb	197	#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
42cabb80 MD	198	#define LTTNG_KERNEL_TRACER_ABI_VERSION \
42cabb80 MD	199	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
33749530 MD	200
	201	/* Session FD ioctl */
	202	#define LTTNG_KERNEL_METADATA \
6dccd6c1	203	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
ab2277d6	204	#define LTTNG_KERNEL_CHANNEL \
6dccd6c1 JD	205	_IOW(0xF6, 0x55, struct lttng_kernel_channel)
	206	#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
	207	#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
e0130fab MD	208	#define LTTNG_KERNEL_SESSION_TRACK_PID \
	209	_IOR(0xF6, 0x58, int32_t)
	210	#define LTTNG_KERNEL_SESSION_UNTRACK_PID \
	211	_IOR(0xF6, 0x59, int32_t)
fe40f016 MD	212	/*
	213	* ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
	214	* are generating two different ioctl numbers, but this was not done on
	215	* purpose. We should generally try to avoid those duplications.
	216	*/
7e6f9ef6	217	#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
9616f0bf	218	#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
601252cf MD	219	/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
601252cf MD	220	#define LTTNG_KERNEL_SESSION_STATEDUMP _IO(0xF6, 0x5C)
33749530 MD	221
33749530 MD	222	/* Channel FD ioctl */
6dccd6c1	223	#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
ab2277d6	224	#define LTTNG_KERNEL_EVENT \
6dccd6c1	225	_IOW(0xF6, 0x63, struct lttng_kernel_event)
12e579db MD	226	#define LTTNG_KERNEL_SYSCALL_MASK \
12e579db MD	227	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
57a13317	228
8070f5c0 MD	229	/* Event and Channel FD ioctl */
8070f5c0 MD	230	#define LTTNG_KERNEL_CONTEXT \
6dccd6c1	231	_IOW(0xF6, 0x71, struct lttng_kernel_context)
8070f5c0	232
e64957da	233	/* Event, Channel and Session ioctl */
6dccd6c1 JD	234	#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
6dccd6c1 JD	235	#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
e64957da	236
07dfc1d0 MD	237	/* Event FD ioctl */
07dfc1d0 MD	238	#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
3aed4dca	239	#define LTTNG_KERNEL_ADD_CALLSITE _IO(0xF6, 0x91)
07dfc1d0	240
1aca53e1 MD	241	/*
	242	* LTTng-specific ioctls for the lib ringbuffer.
	243	*
	244	* Operations applying to the current sub-buffer need to occur between
	245	* a get/put or get_next/put_next ioctl pair.
	246	*/
	247
3b731ab1 JD	248	/* returns the timestamp begin of the current sub-buffer */
	249	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
	250	/* returns the timestamp end of the current sub-buffer */
	251	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
1aca53e1	252	/* returns the number of events discarded of the current sub-buffer */
3b731ab1	253	#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
1aca53e1	254	/* returns the packet payload size of the current sub-buffer */
3b731ab1	255	#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
1aca53e1	256	/* returns the packet size of the current sub-buffer*/
3b731ab1	257	#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
1aca53e1	258	/* returns the stream id (invariant for the stream) */
3b731ab1	259	#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
1aca53e1	260	/* returns the current timestamp as perceived from the tracer */
2348ca17	261	#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
1aca53e1	262	/* returns the packet sequence number of the current sub-buffer */
5b3cf4f9	263	#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
1aca53e1	264	/* returns the stream instance id (invariant for the stream) */
5594698f	265	#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
3b731ab1 JD	266
	267	#ifdef CONFIG_COMPAT
	268	/* returns the timestamp begin of the current sub-buffer */
	269	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	270	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
	271	/* returns the timestamp end of the current sub-buffer */
	272	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	273	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
1aca53e1	274	/* returns the number of events discarded of the current sub-buffer */
3b731ab1 JD	275	#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
3b731ab1 JD	276	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
1aca53e1	277	/* returns the packet payload size of the current sub-buffer */
3b731ab1 JD	278	#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
3b731ab1 JD	279	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
1aca53e1	280	/* returns the packet size of the current sub-buffer */
3b731ab1 JD	281	#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
3b731ab1 JD	282	LTTNG_RING_BUFFER_GET_PACKET_SIZE
1aca53e1	283	/* returns the stream id (invariant for the stream) */
3b731ab1 JD	284	#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
3b731ab1 JD	285	LTTNG_RING_BUFFER_GET_STREAM_ID
1aca53e1	286	/* returns the current timestamp as perceived from the tracer */
2348ca17 JD	287	#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
2348ca17 JD	288	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
1aca53e1	289	/* returns the packet sequence number of the current sub-buffer */
5b3cf4f9 JD	290	#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM \
5b3cf4f9 JD	291	LTTNG_RING_BUFFER_GET_SEQ_NUM
1aca53e1	292	/* returns the stream instance id (invariant for the stream) */
5594698f JD	293	#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID \
5594698f JD	294	LTTNG_RING_BUFFER_INSTANCE_ID
3b731ab1 JD	295	#endif /* CONFIG_COMPAT */
3b731ab1 JD	296
e8951e63	297	#endif /* _LTTNG_ABI_H */