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c7e35b03 JR |
1 | /* |
2 | * Copyright (C) 2014 - Jonathan Rajotte <jonathan.r.julien@gmail.com> | |
3 | * - Olivier Cotte <olivier.cotte@polymtl.ca> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
5e18ec73 | 19 | |
c7e35b03 JR |
20 | #include <include/config.h> |
21 | #include <common/config/config.h> | |
c7e35b03 JR |
22 | #include "mi-lttng.h" |
23 | ||
5e18ec73 JR |
24 | #include <assert.h> |
25 | ||
c7e35b03 JR |
26 | /* Strings related to command */ |
27 | const char * const mi_lttng_element_command = "command"; | |
28 | const char * const mi_lttng_element_command_version = "version"; | |
29 | const char * const mi_lttng_element_command_list = "list"; | |
30 | const char * const mi_lttng_element_command_name = "name"; | |
31 | const char * const mi_lttng_element_command_output = "output"; | |
32 | ||
33 | /* Strings related to command: version */ | |
34 | const char * const mi_lttng_element_version = "version"; | |
35 | const char * const mi_lttng_element_version_str = "string"; | |
36 | const char * const mi_lttng_element_version_web = "url"; | |
37 | const char * const mi_lttng_element_version_major = "major"; | |
38 | const char * const mi_lttng_element_version_minor = "minor"; | |
39 | const char * const mi_lttng_element_version_license = "license"; | |
40 | const char * const mi_lttng_element_version_patch_level = "patchLevel"; | |
41 | const char * const mi_lttng_element_version_description = "description"; | |
42 | ||
5e18ec73 JR |
43 | /* Strings related to pid */ |
44 | const char * const mi_lttng_element_pids = "pids"; | |
45 | const char * const mi_lttng_element_pid = "pid"; | |
46 | const char * const mi_lttng_element_pid_id = "id"; | |
47 | ||
48 | /* String related to a lttng_event_field */ | |
49 | const char * const mi_lttng_element_event_field = "event_field"; | |
50 | const char * const mi_lttng_element_event_fields = "event_fields"; | |
51 | ||
52 | /* General elements of mi_lttng */ | |
53 | const char * const mi_lttng_element_type_other = "OTHER"; | |
54 | const char * const mi_lttng_element_type_integer = "INTEGER"; | |
55 | const char * const mi_lttng_element_type_enum = "ENUM"; | |
56 | const char * const mi_lttng_element_type_float = "FLOAT"; | |
57 | const char * const mi_lttng_element_type_string = "STRING"; | |
58 | const char * const mi_lttng_element_nowrite = "nowrite"; | |
59 | ||
60 | /* String related to loglevel */ | |
61 | const char * const mi_lttng_loglevel_str_alert = "TRACE_ALERT"; | |
62 | const char * const mi_lttng_loglevel_str_crit = "TRACE_CRIT"; | |
63 | const char * const mi_lttng_loglevel_str_debug = "TRACE_DEBUG"; | |
64 | const char * const mi_lttng_loglevel_str_debug_function = "TRACE_DEBUG_FUNCTION"; | |
65 | const char * const mi_lttng_loglevel_str_debug_line = "TRACE_DEBUG_LINE"; | |
66 | const char * const mi_lttng_loglevel_str_debug_module = "TRACE_DEBUG_MODULE"; | |
67 | const char * const mi_lttng_loglevel_str_debug_process = "TRACE_DEBUG_PROCESS"; | |
68 | const char * const mi_lttng_loglevel_str_debug_program = "TRACE_DEBUG_PROGRAM"; | |
69 | const char * const mi_lttng_loglevel_str_debug_system = "TRACE_DEBUG_SYSTEM"; | |
70 | const char * const mi_lttng_loglevel_str_debug_unit = "TRACE_DEBUG_UNIT"; | |
71 | const char * const mi_lttng_loglevel_str_emerg = "TRACE_EMERG"; | |
72 | const char * const mi_lttng_loglevel_str_err = "TRACE_ERR"; | |
73 | const char * const mi_lttng_loglevel_str_info = "TRACE_INFO"; | |
74 | const char * const mi_lttng_loglevel_str_notice = "TRACE_NOTICE"; | |
75 | const char * const mi_lttng_loglevel_str_unknown = "UNKNOWN"; | |
76 | const char * const mi_lttng_loglevel_str_warning = "TRACE_WARNING"; | |
77 | ||
78 | const char * const mi_lttng_loglevel_type_all = "ALL"; | |
79 | const char * const mi_lttng_loglevel_type_range = "RANGE"; | |
80 | const char * const mi_lttng_loglevel_type_single = "SINGLE"; | |
81 | const char * const mi_lttng_loglevel_type_unknown = "UNKNOWN"; | |
82 | ||
83 | const char * const mi_lttng_element_empty = ""; | |
84 | ||
85 | const char *mi_lttng_loglevel_string(int value) | |
86 | { | |
87 | switch (value) { | |
88 | case -1: | |
89 | return mi_lttng_element_empty; | |
90 | case LTTNG_LOGLEVEL_EMERG: | |
91 | return mi_lttng_loglevel_str_emerg; | |
92 | case LTTNG_LOGLEVEL_ALERT: | |
93 | return mi_lttng_loglevel_str_alert; | |
94 | case LTTNG_LOGLEVEL_CRIT: | |
95 | return mi_lttng_loglevel_str_crit; | |
96 | case LTTNG_LOGLEVEL_ERR: | |
97 | return mi_lttng_loglevel_str_err; | |
98 | case LTTNG_LOGLEVEL_WARNING: | |
99 | return mi_lttng_loglevel_str_warning; | |
100 | case LTTNG_LOGLEVEL_NOTICE: | |
101 | return mi_lttng_loglevel_str_notice; | |
102 | case LTTNG_LOGLEVEL_INFO: | |
103 | return mi_lttng_loglevel_str_info; | |
104 | case LTTNG_LOGLEVEL_DEBUG_SYSTEM: | |
105 | return mi_lttng_loglevel_str_debug_system; | |
106 | case LTTNG_LOGLEVEL_DEBUG_PROGRAM: | |
107 | return mi_lttng_loglevel_str_debug_program; | |
108 | case LTTNG_LOGLEVEL_DEBUG_PROCESS: | |
109 | return mi_lttng_loglevel_str_debug_process; | |
110 | case LTTNG_LOGLEVEL_DEBUG_MODULE: | |
111 | return mi_lttng_loglevel_str_debug_module; | |
112 | case LTTNG_LOGLEVEL_DEBUG_UNIT: | |
113 | return mi_lttng_loglevel_str_debug_unit; | |
114 | case LTTNG_LOGLEVEL_DEBUG_FUNCTION: | |
115 | return mi_lttng_loglevel_str_debug_function; | |
116 | case LTTNG_LOGLEVEL_DEBUG_LINE: | |
117 | return mi_lttng_loglevel_str_debug_line; | |
118 | case LTTNG_LOGLEVEL_DEBUG: | |
119 | return mi_lttng_loglevel_str_debug; | |
120 | default: | |
121 | return mi_lttng_loglevel_str_unknown; | |
122 | } | |
123 | } | |
124 | ||
125 | const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value) | |
126 | { | |
127 | switch (value) { | |
128 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
129 | return mi_lttng_loglevel_type_all; | |
130 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
131 | return mi_lttng_loglevel_type_range; | |
132 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
133 | return mi_lttng_loglevel_type_single; | |
134 | default: | |
135 | return mi_lttng_loglevel_type_unknown; | |
136 | } | |
137 | } | |
138 | ||
139 | const char *mi_lttng_eventtype_string(enum lttng_event_type value) | |
140 | { | |
141 | switch (value) { | |
142 | case LTTNG_EVENT_ALL: | |
143 | return config_event_type_all; | |
144 | case LTTNG_EVENT_TRACEPOINT: | |
145 | return config_event_type_tracepoint; | |
146 | case LTTNG_EVENT_PROBE: | |
147 | return config_event_type_probe; | |
148 | case LTTNG_EVENT_FUNCTION: | |
149 | return config_event_type_function; | |
150 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
151 | return config_event_type_function_entry; | |
152 | case LTTNG_EVENT_SYSCALL: | |
153 | return config_event_type_syscall; | |
154 | case LTTNG_EVENT_NOOP: | |
155 | return config_event_type_noop; | |
156 | default: | |
157 | return mi_lttng_element_empty; | |
158 | } | |
159 | } | |
160 | ||
161 | const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type val) | |
162 | { | |
163 | switch (val) { | |
164 | case(LTTNG_EVENT_FIELD_INTEGER): | |
165 | return mi_lttng_element_type_integer; | |
166 | case(LTTNG_EVENT_FIELD_ENUM): | |
167 | return mi_lttng_element_type_enum; | |
168 | case(LTTNG_EVENT_FIELD_FLOAT): | |
169 | return mi_lttng_element_type_float; | |
170 | case(LTTNG_EVENT_FIELD_STRING): | |
171 | return mi_lttng_element_type_string; | |
172 | default: | |
173 | return mi_lttng_element_type_other; | |
174 | } | |
175 | } | |
176 | ||
177 | const char *mi_lttng_domaintype_string(enum lttng_domain_type value) | |
178 | { | |
179 | /* Note: This is a *duplicate* of get_domain_str from bin/lttng/utils.c */ | |
180 | switch (value) { | |
181 | case LTTNG_DOMAIN_KERNEL: | |
182 | return config_domain_type_kernel; | |
183 | case LTTNG_DOMAIN_UST: | |
184 | return config_domain_type_ust; | |
185 | case LTTNG_DOMAIN_JUL: | |
186 | return config_domain_type_jul; | |
187 | default: | |
188 | /* Should not have an unknown domain */ | |
189 | assert(0); | |
190 | } | |
191 | } | |
192 | ||
193 | const char *mi_lttng_buffertype_string(enum lttng_buffer_type value) | |
194 | { | |
195 | switch (value) { | |
196 | case LTTNG_BUFFER_PER_PID: | |
197 | return config_buffer_type_per_pid; | |
198 | case LTTNG_BUFFER_PER_UID: | |
199 | return config_buffer_type_per_uid; | |
200 | case LTTNG_BUFFER_GLOBAL: | |
201 | return config_buffer_type_global; | |
202 | default: | |
203 | /* Should not have an unknow buffer type */ | |
204 | assert(0); | |
205 | } | |
206 | } | |
207 | ||
c7e35b03 JR |
208 | LTTNG_HIDDEN |
209 | struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type) | |
210 | { | |
211 | struct mi_writer *mi_writer; | |
212 | ||
213 | mi_writer = zmalloc(sizeof(struct mi_writer)); | |
214 | if (!mi_writer) { | |
215 | PERROR("zmalloc mi_writer_create"); | |
216 | goto end; | |
217 | } | |
218 | if (mi_output_type == LTTNG_MI_XML) { | |
219 | mi_writer->writer = config_writer_create(fd_output); | |
220 | if (!mi_writer->writer) { | |
221 | goto err_destroy; | |
222 | } | |
223 | mi_writer->type = LTTNG_MI_XML; | |
224 | } else { | |
225 | goto err_destroy; | |
226 | } | |
227 | ||
228 | end: | |
229 | return mi_writer; | |
230 | ||
231 | err_destroy: | |
232 | free(mi_writer); | |
233 | return NULL; | |
234 | } | |
235 | ||
236 | LTTNG_HIDDEN | |
237 | int mi_lttng_writer_destroy(struct mi_writer *writer) | |
238 | { | |
239 | int ret; | |
240 | ||
241 | if (!writer) { | |
242 | ret = -EINVAL; | |
243 | goto end; | |
244 | } | |
245 | ||
246 | ret = config_writer_destroy(writer->writer); | |
247 | if (ret < 0) { | |
248 | goto end; | |
249 | } | |
250 | ||
251 | free(writer); | |
252 | end: | |
253 | return ret; | |
254 | } | |
255 | ||
256 | LTTNG_HIDDEN | |
257 | int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command) | |
258 | { | |
259 | int ret; | |
260 | ||
261 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_command); | |
262 | if (ret) { | |
263 | goto end; | |
264 | } | |
265 | ret = mi_lttng_writer_write_element_string(writer, | |
266 | mi_lttng_element_command_name, command); | |
267 | end: | |
268 | return ret; | |
269 | } | |
270 | ||
271 | LTTNG_HIDDEN | |
272 | int mi_lttng_writer_command_close(struct mi_writer *writer) | |
273 | { | |
274 | return mi_lttng_writer_close_element(writer); | |
275 | } | |
276 | ||
277 | LTTNG_HIDDEN | |
278 | int mi_lttng_writer_open_element(struct mi_writer *writer, | |
279 | const char *element_name) | |
280 | { | |
281 | return config_writer_open_element(writer->writer, element_name); | |
282 | } | |
283 | ||
284 | LTTNG_HIDDEN | |
285 | int mi_lttng_writer_close_element(struct mi_writer *writer) | |
286 | { | |
287 | return config_writer_close_element(writer->writer); | |
288 | } | |
289 | ||
5e18ec73 JR |
290 | LTTNG_HIDDEN |
291 | int mi_lttng_close_multi_element(struct mi_writer *writer, | |
292 | unsigned int nb_element) | |
293 | { | |
294 | int ret, i; | |
295 | ||
296 | if (nb_element < 1) { | |
297 | ret = 0; | |
298 | goto end; | |
299 | } | |
300 | for (i = 0; i < nb_element; i++) { | |
301 | ret = mi_lttng_writer_close_element(writer); | |
302 | if (ret) { | |
303 | goto end; | |
304 | } | |
305 | } | |
306 | end: | |
307 | return ret; | |
308 | } | |
309 | ||
c7e35b03 JR |
310 | LTTNG_HIDDEN |
311 | int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer, | |
312 | const char *element_name, uint64_t value) | |
313 | { | |
314 | return config_writer_write_element_unsigned_int(writer->writer, | |
315 | element_name, value); | |
316 | } | |
317 | ||
318 | LTTNG_HIDDEN | |
319 | int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer, | |
320 | const char *element_name, int64_t value) | |
321 | { | |
322 | return config_writer_write_element_signed_int(writer->writer, | |
323 | element_name, value); | |
324 | } | |
325 | ||
326 | LTTNG_HIDDEN | |
327 | int mi_lttng_writer_write_element_bool(struct mi_writer *writer, | |
328 | const char *element_name, int value) | |
329 | { | |
330 | return config_writer_write_element_bool(writer->writer, | |
331 | element_name, value); | |
332 | } | |
333 | ||
334 | LTTNG_HIDDEN | |
335 | int mi_lttng_writer_write_element_string(struct mi_writer *writer, | |
336 | const char *element_name, const char *value) | |
337 | { | |
338 | return config_writer_write_element_string(writer->writer, | |
339 | element_name, value); | |
340 | } | |
341 | ||
342 | LTTNG_HIDDEN | |
343 | int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version, | |
344 | const char *lttng_description, const char *lttng_license) | |
345 | { | |
346 | int ret; | |
347 | ||
348 | /* Open version */ | |
349 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_version); | |
350 | if (ret) { | |
351 | goto end; | |
352 | } | |
353 | ||
354 | /* Version string (contain info like rc etc.) */ | |
355 | ret = mi_lttng_writer_write_element_string(writer, | |
356 | mi_lttng_element_version_str, VERSION); | |
357 | if (ret) { | |
358 | goto end; | |
359 | } | |
360 | ||
361 | /* Major version number */ | |
362 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
363 | mi_lttng_element_version_major, version->version_major); | |
364 | if (ret) { | |
365 | goto end; | |
366 | } | |
367 | ||
368 | /* Minor version number */ | |
369 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
370 | mi_lttng_element_version_minor, version->version_minor); | |
371 | if (ret) { | |
372 | goto end; | |
373 | } | |
374 | ||
375 | /* Patch number */ | |
376 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
377 | mi_lttng_element_version_patch_level, version->version_patchlevel); | |
378 | if (ret) { | |
379 | goto end; | |
380 | } | |
381 | ||
382 | /* Name of the version */ | |
383 | ret = mi_lttng_writer_write_element_string(writer, | |
384 | config_element_name, version->version_name); | |
385 | if (ret) { | |
386 | goto end; | |
387 | } | |
388 | ||
389 | /* Description mostly related to beer... */ | |
390 | ret = mi_lttng_writer_write_element_string(writer, | |
391 | mi_lttng_element_version_description, lttng_description); | |
392 | if (ret) { | |
393 | goto end; | |
394 | } | |
395 | ||
396 | /* url */ | |
397 | ret = mi_lttng_writer_write_element_string(writer, | |
398 | mi_lttng_element_version_web, version->package_url); | |
399 | if (ret) { | |
400 | goto end; | |
401 | } | |
402 | ||
403 | /* License: free as in free beer...no...*speech* */ | |
404 | ret = mi_lttng_writer_write_element_string(writer, | |
405 | mi_lttng_element_version_license, lttng_license); | |
406 | if (ret) { | |
407 | goto end; | |
408 | } | |
409 | ||
410 | /* Close version element */ | |
411 | ret = mi_lttng_writer_close_element(writer); | |
412 | ||
413 | end: | |
414 | return ret; | |
415 | } | |
416 | ||
5e18ec73 JR |
417 | LTTNG_HIDDEN |
418 | int mi_lttng_sessions_open(struct mi_writer *writer) | |
419 | { | |
420 | return mi_lttng_writer_open_element(writer, config_element_sessions); | |
421 | } | |
422 | ||
c7e35b03 JR |
423 | LTTNG_HIDDEN |
424 | int mi_lttng_session(struct mi_writer *writer, | |
425 | struct lttng_session *session, int is_open) | |
426 | { | |
427 | int ret; | |
428 | ||
5e18ec73 JR |
429 | assert(session); |
430 | ||
431 | /* Open sessions element */ | |
c7e35b03 JR |
432 | ret = mi_lttng_writer_open_element(writer, |
433 | config_element_session); | |
434 | if (ret) { | |
435 | goto end; | |
436 | } | |
437 | ||
438 | /* Name of the session */ | |
439 | ret = mi_lttng_writer_write_element_string(writer, | |
440 | config_element_name, session->name); | |
441 | if (ret) { | |
442 | goto end; | |
443 | } | |
444 | ||
5e18ec73 | 445 | /* Path */ |
c7e35b03 JR |
446 | ret = mi_lttng_writer_write_element_string(writer, |
447 | config_element_path, session->path); | |
448 | if (ret) { | |
449 | goto end; | |
450 | } | |
451 | ||
5e18ec73 JR |
452 | /* Enabled ? */ |
453 | ret = mi_lttng_writer_write_element_bool(writer, | |
c7e35b03 JR |
454 | config_element_enabled, session->enabled); |
455 | if (ret) { | |
456 | goto end; | |
457 | } | |
458 | ||
5e18ec73 | 459 | /* Snapshot mode */ |
c7e35b03 JR |
460 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
461 | config_element_snapshot_mode, session->snapshot_mode); | |
462 | if (ret) { | |
463 | goto end; | |
464 | } | |
465 | ||
5e18ec73 | 466 | /* Live timer interval in usec */ |
c7e35b03 JR |
467 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
468 | config_element_live_timer_interval, | |
469 | session->live_timer_interval); | |
470 | if (ret) { | |
471 | goto end; | |
472 | } | |
473 | ||
474 | if (!is_open) { | |
475 | /* Closing session element */ | |
476 | ret = mi_lttng_writer_close_element(writer); | |
477 | } | |
478 | end: | |
479 | return ret; | |
480 | ||
481 | } | |
5e18ec73 JR |
482 | |
483 | LTTNG_HIDDEN | |
484 | int mi_lttng_domains_open(struct mi_writer *writer) | |
485 | { | |
486 | return mi_lttng_writer_open_element(writer, config_element_domains); | |
487 | } | |
488 | ||
489 | LTTNG_HIDDEN | |
490 | int mi_lttng_domain(struct mi_writer *writer, | |
491 | struct lttng_domain *domain, int is_open) | |
492 | { | |
493 | int ret = 0; | |
494 | const char *str_domain; | |
495 | const char *str_buffer; | |
496 | ||
497 | assert(domain); | |
498 | ||
499 | /* Open domain element */ | |
500 | ret = mi_lttng_writer_open_element(writer, config_element_domain); | |
501 | if (ret) { | |
502 | goto end; | |
503 | } | |
504 | ||
505 | /* Domain Type */ | |
506 | str_domain = mi_lttng_domaintype_string(domain->type); | |
507 | ret = mi_lttng_writer_write_element_string(writer, config_element_type, | |
508 | str_domain); | |
509 | if (ret) { | |
510 | goto end; | |
511 | } | |
512 | ||
513 | /* Buffer Type */ | |
514 | str_buffer= mi_lttng_buffertype_string(domain->buf_type); | |
515 | ret = mi_lttng_writer_write_element_string(writer, | |
516 | config_element_buffer_type, str_buffer); | |
517 | if (ret) { | |
518 | goto end; | |
519 | } | |
520 | ||
521 | /* TODO: attr... not sure how to use the union.... */ | |
522 | ||
523 | if (!is_open) { | |
524 | /* Closing domain element */ | |
525 | ret = mi_lttng_writer_close_element(writer); | |
526 | } | |
527 | ||
528 | end: | |
529 | return ret; | |
530 | ||
531 | } | |
532 | ||
533 | LTTNG_HIDDEN | |
534 | int mi_lttng_channels_open(struct mi_writer *writer) | |
535 | { | |
536 | return mi_lttng_writer_open_element(writer, config_element_channels); | |
537 | } | |
538 | ||
539 | LTTNG_HIDDEN | |
540 | int mi_lttng_channel(struct mi_writer *writer, | |
541 | struct lttng_channel *channel, int is_open) | |
542 | { | |
543 | int ret = 0; | |
544 | ||
545 | assert(channel); | |
546 | ||
547 | /* Opening channel element */ | |
548 | ret = mi_lttng_writer_open_element(writer, config_element_channel); | |
549 | if (ret) { | |
550 | goto end; | |
551 | } | |
552 | ||
553 | /* Name */ | |
554 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
555 | channel->name); | |
556 | if (ret) { | |
557 | goto end; | |
558 | } | |
559 | ||
560 | /* Enabled ? */ | |
561 | ret = mi_lttng_writer_write_element_bool(writer, | |
562 | config_element_enabled, channel->enabled); | |
563 | if (ret) { | |
564 | goto end; | |
565 | } | |
566 | ||
567 | /* Attribute */ | |
568 | ret = mi_lttng_channel_attr(writer, &channel->attr); | |
569 | if (ret) { | |
570 | goto end; | |
571 | } | |
572 | ||
573 | if (!is_open) { | |
574 | /* Closing channel element */ | |
575 | ret = mi_lttng_writer_close_element(writer); | |
576 | if (ret) { | |
577 | goto end; | |
578 | } | |
579 | } | |
580 | end: | |
581 | return ret; | |
582 | } | |
583 | ||
584 | LTTNG_HIDDEN | |
585 | int mi_lttng_channel_attr(struct mi_writer *writer, | |
586 | struct lttng_channel_attr *attr) | |
587 | { | |
588 | int ret = 0; | |
589 | ||
590 | assert(attr); | |
591 | ||
592 | /* Opening Attributes */ | |
593 | ret = mi_lttng_writer_open_element(writer, config_element_attributes); | |
594 | if (ret) { | |
595 | goto end; | |
596 | } | |
597 | ||
598 | /* Overwrite */ | |
599 | ret = mi_lttng_writer_write_element_string(writer, | |
600 | config_element_overwrite_mode, | |
601 | attr->overwrite ? config_overwrite_mode_overwrite : | |
602 | config_overwrite_mode_discard); | |
603 | if (ret) { | |
604 | goto end; | |
605 | } | |
606 | ||
607 | /* Sub buffer size in byte */ | |
608 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
609 | config_element_subbuf_size, attr->subbuf_size); | |
610 | if (ret) { | |
611 | goto end; | |
612 | } | |
613 | ||
614 | /* Number of subbuffer (power of two) */ | |
615 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
616 | config_element_num_subbuf, | |
617 | attr->num_subbuf); | |
618 | if (ret) { | |
619 | goto end; | |
620 | } | |
621 | ||
622 | /* Switch timer interval in usec */ | |
623 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
624 | config_element_switch_timer_interval, | |
625 | attr->switch_timer_interval); | |
626 | if (ret) { | |
627 | goto end; | |
628 | } | |
629 | ||
630 | /* Read timer interval in usec */ | |
631 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
632 | config_element_read_timer_interval, | |
633 | attr->read_timer_interval); | |
634 | if (ret) { | |
635 | goto end; | |
636 | } | |
637 | ||
638 | /* Event output */ | |
639 | ret = mi_lttng_writer_write_element_string(writer, | |
640 | config_element_output_type, | |
641 | attr->output == LTTNG_EVENT_SPLICE ? | |
642 | config_output_type_splice : config_output_type_mmap); | |
643 | if (ret) { | |
644 | goto end; | |
645 | } | |
646 | ||
647 | /* Tracefile size in bytes */ | |
648 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
649 | config_element_tracefile_size, attr->tracefile_size); | |
650 | if (ret) { | |
651 | goto end; | |
652 | } | |
653 | ||
654 | /* Count of tracefiles */ | |
655 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
656 | config_element_tracefile_count, | |
657 | attr->tracefile_count); | |
658 | if (ret) { | |
659 | goto end; | |
660 | } | |
661 | ||
662 | /* Live timer interval in usec*/ | |
663 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
664 | config_element_live_timer_interval, | |
665 | attr->live_timer_interval); | |
666 | if (ret) { | |
667 | goto end; | |
668 | } | |
669 | ||
670 | /* Closing attributes */ | |
671 | ret = mi_lttng_writer_close_element(writer); | |
672 | if (ret) { | |
673 | goto end; | |
674 | } | |
675 | end: | |
676 | return ret; | |
677 | ||
678 | } | |
679 | ||
680 | LTTNG_HIDDEN | |
681 | int mi_lttng_event_common_attributes(struct mi_writer *writer, | |
682 | struct lttng_event *event) | |
683 | { | |
684 | int ret; | |
685 | ||
686 | /* Open event element */ | |
687 | ret = mi_lttng_writer_open_element(writer, config_element_event); | |
688 | if (ret) { | |
689 | goto end; | |
690 | } | |
691 | ||
692 | /* event name */ | |
693 | ret = mi_lttng_writer_write_element_string(writer, | |
694 | config_element_name, event->name); | |
695 | if (ret) { | |
696 | goto end; | |
697 | } | |
698 | ||
699 | /* event type */ | |
700 | ret = mi_lttng_writer_write_element_string(writer, | |
701 | config_element_type, mi_lttng_eventtype_string(event->type)); | |
702 | if (ret) { | |
703 | goto end; | |
704 | } | |
705 | ||
706 | /* is event enabled */ | |
707 | ret = mi_lttng_writer_write_element_bool(writer, | |
708 | config_element_enabled, event->enabled); | |
709 | if (ret) { | |
710 | goto end; | |
711 | } | |
712 | ||
713 | /* event filter enabled? */ | |
714 | ret = mi_lttng_writer_write_element_bool(writer, | |
715 | config_element_filter, event->filter); | |
716 | ||
717 | end: | |
718 | return ret; | |
719 | } | |
720 | ||
721 | LTTNG_HIDDEN | |
722 | int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer, | |
723 | struct lttng_event *event) | |
724 | { | |
725 | int ret; | |
726 | ||
727 | /* event loglevel */ | |
728 | ret = mi_lttng_writer_write_element_string(writer, | |
729 | config_element_loglevel, mi_lttng_loglevel_string(event->loglevel)); | |
730 | if (ret) { | |
731 | goto end; | |
732 | } | |
733 | ||
734 | ret = mi_lttng_writer_write_element_string(writer, | |
735 | config_element_loglevel_type, | |
736 | mi_lttng_logleveltype_string(event->loglevel_type)); | |
737 | if (ret) { | |
738 | goto end; | |
739 | } | |
740 | ||
741 | /* event exclusion filter */ | |
742 | ret = mi_lttng_writer_write_element_bool(writer, | |
743 | config_element_exclusion, event->exclusion); | |
744 | if (ret) { | |
745 | goto end; | |
746 | } | |
747 | ||
748 | end: | |
749 | return ret; | |
750 | } | |
751 | ||
752 | LTTNG_HIDDEN | |
753 | int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer, | |
754 | struct lttng_event *event) | |
755 | { | |
756 | /* event exclusion filter */ | |
757 | return mi_lttng_writer_write_element_bool(writer, | |
758 | config_element_exclusion, event->exclusion); | |
759 | } | |
760 | ||
761 | LTTNG_HIDDEN | |
762 | int mi_lttng_event_function_probe(struct mi_writer *writer, | |
763 | struct lttng_event *event) | |
764 | { | |
765 | int ret; | |
766 | ||
767 | if (event->attr.probe.addr != 0) { | |
768 | /* event probe address */ | |
769 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
770 | config_element_address, event->attr.probe.addr); | |
771 | if (ret) { | |
772 | goto end; | |
773 | } | |
774 | } else { | |
775 | /* event probe offset */ | |
776 | ret = mi_lttng_writer_write_element_unsigned_int(writer, | |
777 | config_element_offset, event->attr.probe.offset); | |
778 | if (ret) { | |
779 | goto end; | |
780 | } | |
781 | ||
782 | /* event probe symbol_name */ | |
783 | ret = mi_lttng_writer_write_element_string(writer, | |
784 | config_element_symbol_name, event->attr.probe.symbol_name); | |
785 | if (ret) { | |
786 | goto end; | |
787 | } | |
788 | } | |
789 | end: | |
790 | return ret; | |
791 | } | |
792 | ||
793 | LTTNG_HIDDEN | |
794 | int mi_lttng_event_function_entry(struct mi_writer *writer, | |
795 | struct lttng_event *event) | |
796 | { | |
797 | /* event probe symbol_name */ | |
798 | return mi_lttng_writer_write_element_string(writer, | |
799 | config_element_symbol_name, event->attr.ftrace.symbol_name); | |
800 | } | |
801 | ||
802 | LTTNG_HIDDEN | |
803 | int mi_lttng_events_open(struct mi_writer *writer) | |
804 | { | |
805 | return mi_lttng_writer_open_element(writer, config_element_events); | |
806 | } | |
807 | ||
808 | LTTNG_HIDDEN | |
809 | int mi_lttng_event(struct mi_writer *writer, | |
810 | struct lttng_event *event, int is_open) | |
811 | { | |
812 | int ret; | |
813 | ||
814 | ret = mi_lttng_event_common_attributes(writer, event); | |
815 | if (ret) { | |
816 | goto end; | |
817 | } | |
818 | ||
819 | switch (event->type) { | |
820 | case LTTNG_EVENT_ALL: | |
821 | /* We should never have "all" events in list. */ | |
822 | assert(0); | |
823 | break; | |
824 | case LTTNG_EVENT_TRACEPOINT: | |
825 | { | |
826 | if (event->loglevel != -1) { | |
827 | ret = mi_lttng_event_tracepoint_loglevel(writer, event); | |
828 | } else { | |
829 | ret = mi_lttng_event_tracepoint_no_loglevel(writer, event); | |
830 | } | |
831 | break; | |
832 | } | |
833 | case LTTNG_EVENT_PROBE: | |
834 | ret = mi_lttng_event_function_probe(writer, event); | |
835 | break; | |
836 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
837 | ret = mi_lttng_event_function_entry(writer, event); | |
838 | break; | |
839 | default: | |
840 | break; | |
841 | } | |
842 | ||
843 | if (!is_open) { | |
844 | ret = mi_lttng_writer_close_element(writer); | |
845 | } | |
846 | ||
847 | end: | |
848 | return ret; | |
849 | } | |
850 | ||
851 | LTTNG_HIDDEN | |
852 | int mi_lttng_pids_open(struct mi_writer *writer) | |
853 | { | |
854 | return mi_lttng_writer_open_element(writer, mi_lttng_element_pids); | |
855 | } | |
856 | ||
857 | LTTNG_HIDDEN | |
858 | int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *cmdline, | |
859 | int is_open) | |
860 | { | |
861 | int ret; | |
862 | ||
863 | /* Open element pid */ | |
864 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_pid); | |
865 | if (ret) { | |
866 | goto end; | |
867 | } | |
868 | ||
869 | /* Writing pid number */ | |
870 | ret = mi_lttng_writer_write_element_signed_int(writer, | |
871 | mi_lttng_element_pid_id, (int)pid); | |
872 | if (ret) { | |
873 | goto end; | |
874 | } | |
875 | ||
876 | /* Writing name of the process */ | |
877 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
878 | cmdline); | |
879 | if (ret) { | |
880 | goto end; | |
881 | } | |
882 | ||
883 | if (!is_open) { | |
884 | /* Closing Pid */ | |
885 | ret = mi_lttng_writer_close_element(writer); | |
886 | } | |
887 | ||
888 | end: | |
889 | return ret; | |
890 | } | |
891 | ||
892 | LTTNG_HIDDEN | |
893 | int mi_lttng_event_fields_open(struct mi_writer *writer) | |
894 | { | |
895 | return mi_lttng_writer_open_element(writer, mi_lttng_element_event_fields); | |
896 | } | |
897 | ||
898 | LTTNG_HIDDEN | |
899 | int mi_lttng_event_field(struct mi_writer *writer, | |
900 | struct lttng_event_field *field) | |
901 | { | |
902 | int ret; | |
903 | ||
904 | if (!field->field_name[0]) { | |
905 | /* To Review: not sure if legal david ? | |
906 | * how should this be handle ? | |
907 | */ | |
908 | ret = 0; | |
909 | goto end; | |
910 | } | |
911 | ||
912 | /* Open field */ | |
913 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_event_field); | |
914 | if (ret) { | |
915 | goto end; | |
916 | } | |
917 | ||
918 | if (!field->field_name[0]) { | |
919 | goto close; | |
920 | } | |
921 | ||
922 | /* Name */ | |
923 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
924 | field->field_name); | |
925 | if (ret) { | |
926 | goto end; | |
927 | } | |
928 | ||
929 | /* Type */ | |
930 | ret = mi_lttng_writer_write_element_string(writer, config_element_type, | |
931 | mi_lttng_eventfieldtype_string(field->type)); | |
932 | if (ret) { | |
933 | goto end; | |
934 | } | |
935 | ||
936 | /* nowrite */ | |
937 | ret = mi_lttng_writer_write_element_signed_int(writer, | |
938 | mi_lttng_element_nowrite, field->nowrite); | |
939 | if (ret) { | |
940 | goto end; | |
941 | } | |
942 | ||
943 | close: | |
944 | /* Close field element */ | |
945 | ret = mi_lttng_writer_close_element(writer); | |
946 | ||
947 | end: | |
948 | return ret; | |
949 | } |