2 * Copyright 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * SPDX-License-Identifier: MIT
6 * Copied from LTTng-UST lttng/ust-abi.h
12 #ifndef LTTNG_UST_ABI_INTERNAL_H
13 #define LTTNG_UST_ABI_INTERNAL_H
16 #include <common/macros.h>
19 #error "LTTNG_PACKED should be defined"
22 #ifndef __ust_stringify
23 #define __ust_stringify1(x) #x
24 #define __ust_stringify(x) __ust_stringify1(x)
25 #endif /* __ust_stringify */
27 #define LTTNG_UST_SYM_NAME_LEN 256
28 #define LTTNG_UST_ABI_PROCNAME_LEN 16
30 /* UST comm magic number, used to validate protocol and endianness. */
31 #define LTTNG_UST_COMM_MAGIC 0xC57C57C5
33 /* Version for ABI between liblttng-ust, sessiond, consumerd */
34 #define LTTNG_UST_ABI_MAJOR_VERSION 8
35 #define LTTNG_UST_ABI_MINOR_VERSION 1
37 enum lttng_ust_instrumentation
{
38 LTTNG_UST_TRACEPOINT
= 0,
40 LTTNG_UST_FUNCTION
= 2,
43 enum lttng_ust_loglevel_type
{
44 LTTNG_UST_LOGLEVEL_ALL
= 0,
45 LTTNG_UST_LOGLEVEL_RANGE
= 1,
46 LTTNG_UST_LOGLEVEL_SINGLE
= 2,
49 enum lttng_ust_output
{
53 enum lttng_ust_chan_type
{
54 LTTNG_UST_CHAN_PER_CPU
= 0,
55 LTTNG_UST_CHAN_METADATA
= 1,
58 struct lttng_ust_tracer_version
{
64 #define LTTNG_UST_CHANNEL_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
66 * Given that the consumerd is limited to 64k file descriptors, we
67 * cannot expect much more than 1MB channel structure size. This size is
68 * depends on the number of streams within a channel, which depends on
69 * the number of possible CPUs on the system.
71 #define LTTNG_UST_CHANNEL_DATA_MAX_LEN 1048576U
72 struct lttng_ust_channel
{
74 enum lttng_ust_chan_type type
;
75 char padding
[LTTNG_UST_CHANNEL_PADDING
];
76 char data
[]; /* variable sized data */
79 #define LTTNG_UST_STREAM_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32)
80 struct lttng_ust_stream
{
81 uint64_t len
; /* shm len */
82 uint32_t stream_nr
; /* stream number */
83 char padding
[LTTNG_UST_STREAM_PADDING1
];
85 * shm_fd and wakeup_fd are send over unix socket as file
86 * descriptors after this structure.
90 #define LTTNG_UST_TRIGGER_PADDING1 16
91 #define LTTNG_UST_TRIGGER_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
92 struct lttng_ust_trigger
{
94 enum lttng_ust_instrumentation instrumentation
;
95 char name
[LTTNG_UST_SYM_NAME_LEN
]; /* event name */
97 enum lttng_ust_loglevel_type loglevel_type
;
98 int loglevel
; /* value, -1: all */
99 char padding
[LTTNG_UST_TRIGGER_PADDING1
];
101 /* Per instrumentation type configuration */
103 char padding
[LTTNG_UST_TRIGGER_PADDING2
];
107 #define LTTNG_TRIGGER_NOTIFICATION_PADDING 32
108 struct lttng_ust_trigger_notification
{
110 uint16_t capture_buf_size
;
111 char padding
[LTTNG_TRIGGER_NOTIFICATION_PADDING
];
114 #define LTTNG_UST_EVENT_PADDING1 16
115 #define LTTNG_UST_EVENT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
116 struct lttng_ust_event
{
117 enum lttng_ust_instrumentation instrumentation
;
118 char name
[LTTNG_UST_SYM_NAME_LEN
]; /* event name */
120 enum lttng_ust_loglevel_type loglevel_type
;
121 int loglevel
; /* value, -1: all */
122 char padding
[LTTNG_UST_EVENT_PADDING1
];
124 /* Per instrumentation type configuration */
126 char padding
[LTTNG_UST_EVENT_PADDING2
];
130 enum lttng_ust_field_type
{
131 LTTNG_UST_FIELD_OTHER
= 0,
132 LTTNG_UST_FIELD_INTEGER
= 1,
133 LTTNG_UST_FIELD_ENUM
= 2,
134 LTTNG_UST_FIELD_FLOAT
= 3,
135 LTTNG_UST_FIELD_STRING
= 4,
138 #define LTTNG_UST_FIELD_ITER_PADDING (LTTNG_UST_SYM_NAME_LEN + 28)
139 struct lttng_ust_field_iter
{
140 char event_name
[LTTNG_UST_SYM_NAME_LEN
];
141 char field_name
[LTTNG_UST_SYM_NAME_LEN
];
142 enum lttng_ust_field_type type
;
143 int loglevel
; /* event loglevel */
145 char padding
[LTTNG_UST_FIELD_ITER_PADDING
];
148 enum lttng_ust_context_type
{
149 LTTNG_UST_CONTEXT_VTID
= 0,
150 LTTNG_UST_CONTEXT_VPID
= 1,
151 LTTNG_UST_CONTEXT_PTHREAD_ID
= 2,
152 LTTNG_UST_CONTEXT_PROCNAME
= 3,
153 LTTNG_UST_CONTEXT_IP
= 4,
154 LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER
= 5,
155 LTTNG_UST_CONTEXT_CPU_ID
= 6,
156 LTTNG_UST_CONTEXT_APP_CONTEXT
= 7,
157 LTTNG_UST_CONTEXT_CGROUP_NS
= 8,
158 LTTNG_UST_CONTEXT_IPC_NS
= 9,
159 LTTNG_UST_CONTEXT_MNT_NS
= 10,
160 LTTNG_UST_CONTEXT_NET_NS
= 11,
161 LTTNG_UST_CONTEXT_PID_NS
= 12,
162 LTTNG_UST_CONTEXT_USER_NS
= 13,
163 LTTNG_UST_CONTEXT_UTS_NS
= 14,
164 LTTNG_UST_CONTEXT_VUID
= 15,
165 LTTNG_UST_CONTEXT_VEUID
= 16,
166 LTTNG_UST_CONTEXT_VSUID
= 17,
167 LTTNG_UST_CONTEXT_VGID
= 18,
168 LTTNG_UST_CONTEXT_VEGID
= 19,
169 LTTNG_UST_CONTEXT_VSGID
= 20,
172 struct lttng_ust_perf_counter_ctx
{
175 char name
[LTTNG_UST_SYM_NAME_LEN
];
178 #define LTTNG_UST_CONTEXT_PADDING1 16
179 #define LTTNG_UST_CONTEXT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
180 struct lttng_ust_context
{
181 enum lttng_ust_context_type ctx
;
182 char padding
[LTTNG_UST_CONTEXT_PADDING1
];
185 struct lttng_ust_perf_counter_ctx perf_counter
;
187 /* Includes trailing '\0'. */
188 uint32_t provider_name_len
;
189 uint32_t ctx_name_len
;
191 char padding
[LTTNG_UST_CONTEXT_PADDING2
];
196 * Tracer channel attributes.
198 #define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
199 struct lttng_ust_channel_attr
{
200 uint64_t subbuf_size
; /* bytes */
201 uint64_t num_subbuf
; /* power of 2 */
202 int overwrite
; /* 1: overwrite, 0: discard */
203 unsigned int switch_timer_interval
; /* usec */
204 unsigned int read_timer_interval
; /* usec */
205 enum lttng_ust_output output
; /* splice, mmap */
208 int64_t blocking_timeout
; /* Blocking timeout (usec) */
210 char padding
[LTTNG_UST_CHANNEL_ATTR_PADDING
];
214 #define LTTNG_UST_TRACEPOINT_ITER_PADDING 16
215 struct lttng_ust_tracepoint_iter
{
216 char name
[LTTNG_UST_SYM_NAME_LEN
]; /* provider:name */
218 char padding
[LTTNG_UST_TRACEPOINT_ITER_PADDING
];
221 enum lttng_ust_object_type
{
222 LTTNG_UST_OBJECT_TYPE_UNKNOWN
= -1,
223 LTTNG_UST_OBJECT_TYPE_CHANNEL
= 0,
224 LTTNG_UST_OBJECT_TYPE_STREAM
= 1,
225 LTTNG_UST_OBJECT_TYPE_EVENT
= 2,
226 LTTNG_UST_OBJECT_TYPE_CONTEXT
= 3,
229 #define LTTNG_UST_OBJECT_DATA_PADDING1 32
230 #define LTTNG_UST_OBJECT_DATA_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
232 struct lttng_ust_object_data
{
233 enum lttng_ust_object_type type
;
236 char padding1
[LTTNG_UST_OBJECT_DATA_PADDING1
];
240 enum lttng_ust_chan_type type
;
248 char padding2
[LTTNG_UST_OBJECT_DATA_PADDING2
];
252 enum lttng_ust_calibrate_type
{
253 LTTNG_UST_CALIBRATE_TRACEPOINT
,
256 #define LTTNG_UST_CALIBRATE_PADDING1 16
257 #define LTTNG_UST_CALIBRATE_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
258 struct lttng_ust_calibrate
{
259 enum lttng_ust_calibrate_type type
; /* type (input) */
260 char padding
[LTTNG_UST_CALIBRATE_PADDING1
];
263 char padding
[LTTNG_UST_CALIBRATE_PADDING2
];
267 #define FILTER_BYTECODE_MAX_LEN 65536
268 #define LTTNG_UST_FILTER_PADDING 32
269 struct lttng_ust_filter_bytecode
{
271 uint32_t reloc_offset
;
273 char padding
[LTTNG_UST_FILTER_PADDING
];
277 #define CAPTURE_BYTECODE_MAX_LEN 65536
278 #define LTTNG_UST_CAPTURE_PADDING 32
279 struct lttng_ust_capture_bytecode
{
281 uint32_t reloc_offset
;
283 char padding
[LTTNG_UST_CAPTURE_PADDING
];
287 #define LTTNG_UST_EXCLUSION_PADDING 32
288 struct lttng_ust_event_exclusion
{
290 char padding
[LTTNG_UST_EXCLUSION_PADDING
];
291 char names
[LTTNG_UST_SYM_NAME_LEN
][0];
294 #define _UST_CMD(minor) (minor)
295 #define _UST_CMDR(minor, type) (minor)
296 #define _UST_CMDW(minor, type) (minor)
298 /* Handled by object descriptor */
299 #define LTTNG_UST_RELEASE _UST_CMD(0x1)
301 /* Handled by object cmd */
303 /* LTTng-UST commands */
304 #define LTTNG_UST_SESSION _UST_CMD(0x40)
305 #define LTTNG_UST_TRACER_VERSION \
306 _UST_CMDR(0x41, struct lttng_ust_tracer_version)
307 #define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42)
308 #define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43)
309 #define LTTNG_UST_REGISTER_DONE _UST_CMD(0x44)
310 #define LTTNG_UST_TRACEPOINT_FIELD_LIST _UST_CMD(0x45)
312 /* Session FD commands */
313 #define LTTNG_UST_CHANNEL \
314 _UST_CMDW(0x51, struct lttng_ust_channel)
315 #define LTTNG_UST_SESSION_START _UST_CMD(0x52)
316 #define LTTNG_UST_SESSION_STOP _UST_CMD(0x53)
317 #define LTTNG_UST_SESSION_STATEDUMP _UST_CMD(0x54)
319 /* Channel FD commands */
320 #define LTTNG_UST_STREAM _UST_CMD(0x60)
321 #define LTTNG_UST_EVENT \
322 _UST_CMDW(0x61, struct lttng_ust_event)
324 /* Event and Channel FD commands */
325 #define LTTNG_UST_CONTEXT \
326 _UST_CMDW(0x70, struct lttng_ust_context)
327 #define LTTNG_UST_FLUSH_BUFFER \
330 /* Event, Channel and Session commands */
331 #define LTTNG_UST_ENABLE _UST_CMD(0x80)
332 #define LTTNG_UST_DISABLE _UST_CMD(0x81)
334 /* Tracepoint list commands */
335 #define LTTNG_UST_TRACEPOINT_LIST_GET _UST_CMD(0x90)
336 #define LTTNG_UST_TRACEPOINT_FIELD_LIST_GET _UST_CMD(0x91)
338 /* Event FD commands */
339 #define LTTNG_UST_FILTER _UST_CMD(0xA0)
340 #define LTTNG_UST_EXCLUSION _UST_CMD(0xA1)
342 #define LTTNG_UST_TRIGGER_SEND_FD _UST_CMD(0xB0)
343 #define LTTNG_UST_TRIGGER_CREATE _UST_CMDW(0xB1, struct lttng_ust_trigger)
345 #define LTTNG_UST_ROOT_HANDLE 0
347 struct lttng_ust_obj
;
359 struct lttng_ust_field_iter entry
;
366 struct lttng_ust_objd_ops
{
367 long (*cmd
)(int objd
, unsigned int cmd
, unsigned long arg
,
368 union ust_args
*args
, void *owner
);
369 int (*release
)(int objd
);
372 /* Create root handle. Always ID 0. */
373 int lttng_abi_create_root_handle(void);
375 const struct lttng_ust_objd_ops
*objd_ops(int id
);
376 int lttng_ust_objd_unref(int id
, int is_owner
);
378 void lttng_ust_abi_exit(void);
379 void lttng_ust_events_exit(void);
380 void lttng_ust_objd_table_owner_cleanup(void *owner
);
382 #endif /* LTTNG_UST_ABI_INTERNAL_H */