1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
7 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
16 * Major/minor version of ABI exposed to lttng tools. Major number
17 * should be increased when an incompatible ABI change is done.
19 #define LTTNG_MODULES_ABI_MAJOR_VERSION 2
20 #define LTTNG_MODULES_ABI_MINOR_VERSION 5
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
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,
39 enum lttng_kernel_output
{
40 LTTNG_KERNEL_SPLICE
= 0,
41 LTTNG_KERNEL_MMAP
= 1,
45 * LTTng DebugFS ABI structures.
47 #define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
48 struct lttng_kernel_channel
{
49 uint64_t subbuf_size
; /* in bytes */
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
));
58 struct lttng_kernel_kretprobe
{
62 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
63 } __attribute__((packed
));
66 * Either addr is used, or symbol_name and offset.
68 struct lttng_kernel_kprobe
{
72 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
73 } __attribute__((packed
));
75 struct lttng_kernel_function_tracer
{
76 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
77 } __attribute__((packed
));
79 struct lttng_kernel_uprobe
{
81 } __attribute__((packed
));
83 struct lttng_kernel_event_callsite_uprobe
{
85 } __attribute__((packed
));
87 struct lttng_kernel_event_callsite
{
89 struct lttng_kernel_event_callsite_uprobe uprobe
;
91 } __attribute__((packed
));
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. */
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. */
105 enum lttng_kernel_syscall_match
{
106 LTTNG_SYSCALL_MATCH_NAME
= 0,
107 LTTNG_SYSCALL_MATCH_NR
= 1, /* Not implemented. */
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 */
115 uint32_t nr
; /* For LTTNG_SYSCALL_MATCH_NR */
116 } __attribute__((packed
));
119 * For syscall tracing, name = "*" means "enable all".
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
];
129 /* Per instrumentation type configuration */
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
];
138 } __attribute__((packed
));
140 struct lttng_kernel_tracer_version
{
144 } __attribute__((packed
));
146 struct lttng_kernel_tracer_abi_version
{
149 } __attribute__((packed
));
151 struct lttng_kernel_session_name
{
152 char name
[LTTNG_KERNEL_SESSION_NAME_LEN
];
153 } __attribute__((packed
));
155 struct lttng_kernel_session_creation_time
{
156 char iso8601
[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN
];
157 } __attribute__((packed
));
159 enum lttng_kernel_calibrate_type
{
160 LTTNG_KERNEL_CALIBRATE_KRETPROBE
,
163 struct lttng_kernel_calibrate
{
164 uint32_t type
; /* enum lttng_kernel_calibrate_type (input) */
165 } __attribute__((packed
));
167 struct lttng_kernel_syscall_mask
{
168 uint32_t len
; /* in bits */
170 } __attribute__((packed
));
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,
213 struct lttng_kernel_perf_counter_ctx
{
216 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
217 } __attribute__((packed
));
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
];
226 struct lttng_kernel_perf_counter_ctx perf_counter
;
227 char padding
[LTTNG_KERNEL_CONTEXT_PADDING2
];
229 } __attribute__((packed
));
231 #define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
232 struct lttng_kernel_filter_bytecode
{
234 uint32_t reloc_offset
;
237 } __attribute__((packed
));
239 enum lttng_kernel_tracker_type
{
240 LTTNG_KERNEL_TRACKER_UNKNOWN
= -1,
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,
250 struct lttng_kernel_tracker_args
{
251 uint32_t type
; /* enum lttng_kernel_tracker_type */
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)
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)
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.
287 #define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
288 #define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
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)
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)
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)
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)
316 #define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
317 #define LTTNG_KERNEL_ADD_CALLSITE _IO(0xF6, 0x91)
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)
328 * LTTng-specific ioctls for the lib ringbuffer.
330 * Operations applying to the current sub-buffer need to occur between
331 * a get/put or get_next/put_next ioctl pair.
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)
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 */
383 #endif /* _LTTNG_ABI_H */