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0de2479d SM |
1 | /* |
2 | * Copyright (C) 2021 Simon Marchi <simon.marchi@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <stdio.h> | |
9 | ||
10 | #include "../command.h" | |
11 | ||
12 | #include "common/argpar/argpar.h" | |
13 | #include "common/dynamic-array.h" | |
14 | #include "common/mi-lttng.h" | |
15 | /* For lttng_condition_type_str(). */ | |
16 | #include "lttng/condition/condition-internal.h" | |
17 | /* For lttng_domain_type_str(). */ | |
18 | #include "lttng/domain-internal.h" | |
19 | ||
20 | #ifdef LTTNG_EMBED_HELP | |
21 | static const char help_msg[] = | |
279eb769 | 22 | #include <lttng-list-triggers.1.h> |
0de2479d SM |
23 | ; |
24 | #endif | |
25 | ||
26 | enum { | |
27 | OPT_HELP, | |
28 | OPT_LIST_OPTIONS, | |
29 | }; | |
30 | ||
31 | static const | |
32 | struct argpar_opt_descr list_trigger_options[] = { | |
33 | { OPT_HELP, 'h', "help", false }, | |
34 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
35 | ARGPAR_OPT_DESCR_SENTINEL, | |
36 | }; | |
37 | ||
38 | static | |
39 | void print_event_rule_tracepoint(const struct lttng_event_rule *event_rule) | |
40 | { | |
41 | enum lttng_event_rule_status event_rule_status; | |
42 | enum lttng_domain_type domain_type; | |
43 | const char *pattern; | |
44 | const char *filter; | |
45 | int log_level; | |
46 | unsigned int exclusions_count; | |
47 | int i; | |
48 | ||
49 | event_rule_status = lttng_event_rule_tracepoint_get_pattern( | |
50 | event_rule, &pattern); | |
51 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
52 | ||
53 | event_rule_status = lttng_event_rule_tracepoint_get_domain_type( | |
54 | event_rule, &domain_type); | |
55 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
56 | ||
57 | _MSG(" rule: %s (type: tracepoint, domain: %s", pattern, | |
58 | lttng_domain_type_str(domain_type)); | |
59 | ||
60 | event_rule_status = lttng_event_rule_tracepoint_get_filter( | |
61 | event_rule, &filter); | |
62 | if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) { | |
63 | _MSG(", filter: %s", filter); | |
64 | } else { | |
65 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET); | |
66 | } | |
67 | ||
68 | event_rule_status = lttng_event_rule_tracepoint_get_log_level( | |
69 | event_rule, &log_level); | |
70 | if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) { | |
71 | enum lttng_loglevel_type log_level_type; | |
72 | const char *log_level_op; | |
73 | ||
74 | event_rule_status = lttng_event_rule_tracepoint_get_log_level_type( | |
75 | event_rule, &log_level_type); | |
76 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
77 | assert(log_level_type == LTTNG_EVENT_LOGLEVEL_RANGE || | |
78 | log_level_type == LTTNG_EVENT_LOGLEVEL_SINGLE); | |
79 | ||
80 | log_level_op = (log_level_type == LTTNG_EVENT_LOGLEVEL_RANGE ? "<=" : "=="); | |
81 | ||
82 | _MSG(", log level %s %s", log_level_op, | |
83 | mi_lttng_loglevel_string( | |
84 | log_level, domain_type)); | |
85 | } else { | |
86 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET); | |
87 | } | |
88 | ||
89 | event_rule_status = lttng_event_rule_tracepoint_get_exclusions_count( | |
90 | event_rule, &exclusions_count); | |
91 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
92 | if (exclusions_count > 0) { | |
93 | _MSG(", exclusions: "); | |
94 | for (i = 0; i < exclusions_count; i++) { | |
95 | const char *exclusion; | |
96 | ||
97 | event_rule_status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
98 | event_rule, i, &exclusion); | |
99 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
100 | ||
101 | _MSG("%s%s", i > 0 ? "," : "", exclusion); | |
102 | } | |
103 | } | |
104 | ||
105 | MSG(")"); | |
106 | } | |
107 | ||
108 | static void print_kernel_probe_location( | |
109 | const struct lttng_kernel_probe_location *location) | |
110 | { | |
111 | enum lttng_kernel_probe_location_status status; | |
112 | switch (lttng_kernel_probe_location_get_type(location)) { | |
113 | case LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS: | |
114 | { | |
115 | uint64_t address; | |
116 | ||
117 | status = lttng_kernel_probe_location_address_get_address( | |
118 | location, &address); | |
119 | if (status != LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK) { | |
120 | ERR("Getting kernel probe location address failed."); | |
121 | goto end; | |
122 | } | |
123 | ||
124 | _MSG("0x%" PRIx64, address); | |
125 | ||
126 | break; | |
127 | } | |
128 | case LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET: | |
129 | { | |
130 | uint64_t offset; | |
131 | const char *symbol_name; | |
132 | ||
133 | symbol_name = lttng_kernel_probe_location_symbol_get_name( | |
134 | location); | |
135 | if (!symbol_name) { | |
136 | ERR("Getting kernel probe location symbol name failed."); | |
137 | goto end; | |
138 | } | |
139 | ||
140 | status = lttng_kernel_probe_location_symbol_get_offset( | |
141 | location, &offset); | |
142 | if (status != LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK) { | |
143 | ERR("Getting kernel probe location address failed."); | |
144 | goto end; | |
145 | } | |
146 | ||
147 | if (offset == 0) { | |
148 | _MSG("%s", symbol_name); | |
149 | } else { | |
150 | _MSG("%s+0x%" PRIx64, symbol_name, offset); | |
151 | } | |
152 | ||
153 | break; | |
154 | } | |
155 | default: | |
156 | abort(); | |
157 | }; | |
158 | end: | |
159 | return; | |
160 | } | |
161 | ||
162 | static | |
f2791161 | 163 | void print_event_rule_kernel_probe(const struct lttng_event_rule *event_rule) |
0de2479d SM |
164 | { |
165 | enum lttng_event_rule_status event_rule_status; | |
166 | const char *name; | |
167 | const struct lttng_kernel_probe_location *location; | |
168 | ||
f2791161 | 169 | assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE); |
0de2479d | 170 | |
f2791161 | 171 | event_rule_status = lttng_event_rule_kernel_probe_get_name(event_rule, &name); |
0de2479d SM |
172 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
173 | ERR("Failed to get kprobe event rule's name."); | |
174 | goto end; | |
175 | } | |
176 | ||
f2791161 | 177 | event_rule_status = lttng_event_rule_kernel_probe_get_location( |
0de2479d SM |
178 | event_rule, &location); |
179 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
180 | ERR("Failed to get kprobe event rule's location."); | |
181 | goto end; | |
182 | } | |
183 | ||
184 | _MSG(" rule: %s (type: probe, location: ", name); | |
185 | ||
186 | print_kernel_probe_location(location); | |
187 | ||
188 | MSG(")"); | |
189 | ||
190 | end: | |
191 | return; | |
192 | } | |
193 | ||
194 | static | |
1f1567a5 | 195 | void print_event_rule_userspace_probe(const struct lttng_event_rule *event_rule) |
0de2479d SM |
196 | { |
197 | enum lttng_event_rule_status event_rule_status; | |
198 | const char *name; | |
199 | const struct lttng_userspace_probe_location *location; | |
200 | enum lttng_userspace_probe_location_type userspace_probe_location_type; | |
201 | ||
1f1567a5 | 202 | assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE); |
0de2479d | 203 | |
1f1567a5 | 204 | event_rule_status = lttng_event_rule_userspace_probe_get_name(event_rule, &name); |
0de2479d SM |
205 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
206 | ERR("Failed to get uprobe event rule's name."); | |
207 | goto end; | |
208 | } | |
209 | ||
1f1567a5 | 210 | event_rule_status = lttng_event_rule_userspace_probe_get_location( |
0de2479d SM |
211 | event_rule, &location); |
212 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
213 | ERR("Failed to get uprobe event rule's location."); | |
214 | goto end; | |
215 | } | |
216 | ||
217 | _MSG(" rule: %s (type: userspace probe, location: ", name); | |
218 | ||
219 | userspace_probe_location_type = | |
220 | lttng_userspace_probe_location_get_type(location); | |
221 | ||
222 | switch (userspace_probe_location_type) { | |
223 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
224 | { | |
225 | const char *binary_path, *function_name; | |
226 | ||
227 | binary_path = lttng_userspace_probe_location_function_get_binary_path( | |
228 | location); | |
229 | function_name = lttng_userspace_probe_location_function_get_function_name( | |
230 | location); | |
231 | ||
232 | _MSG("%s:%s", binary_path, function_name); | |
233 | break; | |
234 | } | |
235 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
236 | _MSG("SDT not implemented yet"); | |
237 | break; | |
238 | default: | |
239 | abort(); | |
240 | } | |
241 | ||
242 | MSG(")"); | |
243 | ||
244 | end: | |
245 | return; | |
246 | } | |
247 | ||
248 | static | |
249 | void print_event_rule_syscall(const struct lttng_event_rule *event_rule) | |
250 | { | |
251 | const char *pattern, *filter; | |
252 | enum lttng_event_rule_status event_rule_status; | |
253 | ||
254 | assert(lttng_event_rule_get_type(event_rule) == LTTNG_EVENT_RULE_TYPE_SYSCALL); | |
255 | ||
256 | event_rule_status = lttng_event_rule_syscall_get_pattern( | |
257 | event_rule, &pattern); | |
258 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
259 | ||
260 | _MSG(" rule: %s (type: syscall", pattern); | |
261 | ||
262 | event_rule_status = lttng_event_rule_syscall_get_filter( | |
263 | event_rule, &filter); | |
264 | if (event_rule_status == LTTNG_EVENT_RULE_STATUS_OK) { | |
265 | _MSG(", filter: %s", filter); | |
266 | } else { | |
267 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_UNSET); | |
268 | } | |
269 | ||
270 | MSG(")"); | |
271 | } | |
272 | ||
273 | static | |
274 | void print_event_rule(const struct lttng_event_rule *event_rule) | |
275 | { | |
276 | const enum lttng_event_rule_type event_rule_type = | |
277 | lttng_event_rule_get_type(event_rule); | |
278 | ||
279 | switch (event_rule_type) { | |
280 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
281 | print_event_rule_tracepoint(event_rule); | |
282 | break; | |
f2791161 JR |
283 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: |
284 | print_event_rule_kernel_probe(event_rule); | |
0de2479d | 285 | break; |
1f1567a5 JR |
286 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: |
287 | print_event_rule_userspace_probe(event_rule); | |
0de2479d SM |
288 | break; |
289 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
290 | print_event_rule_syscall(event_rule); | |
291 | break; | |
292 | default: | |
293 | abort(); | |
294 | } | |
295 | } | |
296 | ||
b203b4b0 SM |
297 | static |
298 | void print_one_event_expr(const struct lttng_event_expr *event_expr) | |
299 | { | |
300 | enum lttng_event_expr_type type; | |
301 | ||
302 | type = lttng_event_expr_get_type(event_expr); | |
303 | ||
304 | switch (type) { | |
305 | case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: | |
306 | { | |
307 | const char *name; | |
308 | ||
309 | name = lttng_event_expr_event_payload_field_get_name( | |
310 | event_expr); | |
311 | _MSG("%s", name); | |
312 | ||
313 | break; | |
314 | } | |
315 | case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: | |
316 | { | |
317 | const char *name; | |
318 | ||
319 | name = lttng_event_expr_channel_context_field_get_name( | |
320 | event_expr); | |
321 | _MSG("$ctx.%s", name); | |
322 | ||
323 | break; | |
324 | } | |
325 | case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: | |
326 | { | |
327 | const char *provider_name; | |
328 | const char *type_name; | |
329 | ||
330 | provider_name = lttng_event_expr_app_specific_context_field_get_provider_name( | |
331 | event_expr); | |
332 | type_name = lttng_event_expr_app_specific_context_field_get_type_name( | |
333 | event_expr); | |
334 | ||
335 | _MSG("$app.%s:%s", provider_name, type_name); | |
336 | ||
337 | break; | |
338 | } | |
339 | case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: | |
340 | { | |
341 | unsigned int index; | |
342 | const struct lttng_event_expr *parent_expr; | |
343 | enum lttng_event_expr_status status; | |
344 | ||
345 | parent_expr = lttng_event_expr_array_field_element_get_parent_expr( | |
346 | event_expr); | |
347 | assert(parent_expr != NULL); | |
348 | ||
349 | print_one_event_expr(parent_expr); | |
350 | ||
351 | status = lttng_event_expr_array_field_element_get_index( | |
352 | event_expr, &index); | |
353 | assert(status == LTTNG_EVENT_EXPR_STATUS_OK); | |
354 | ||
355 | _MSG("[%u]", index); | |
356 | ||
357 | break; | |
358 | } | |
359 | default: | |
360 | abort(); | |
361 | } | |
362 | } | |
363 | ||
0de2479d SM |
364 | static |
365 | void print_condition_event_rule_hit(const struct lttng_condition *condition) | |
366 | { | |
367 | const struct lttng_event_rule *event_rule; | |
368 | enum lttng_condition_status condition_status; | |
b203b4b0 | 369 | unsigned int cap_desc_count, i; |
0de2479d SM |
370 | |
371 | condition_status = | |
372 | lttng_condition_event_rule_get_rule(condition, &event_rule); | |
373 | assert(condition_status == LTTNG_CONDITION_STATUS_OK); | |
374 | ||
375 | print_event_rule(event_rule); | |
b203b4b0 SM |
376 | |
377 | condition_status = | |
378 | lttng_condition_event_rule_get_capture_descriptor_count( | |
379 | condition, &cap_desc_count); | |
380 | assert(condition_status == LTTNG_CONDITION_STATUS_OK); | |
381 | ||
382 | if (cap_desc_count > 0) { | |
383 | MSG(" captures:"); | |
384 | ||
385 | for (i = 0; i < cap_desc_count; i++) { | |
386 | const struct lttng_event_expr *cap_desc = | |
387 | lttng_condition_event_rule_get_capture_descriptor_at_index( | |
388 | condition, i); | |
389 | ||
390 | _MSG(" - "); | |
391 | print_one_event_expr(cap_desc); | |
392 | MSG(""); | |
393 | } | |
394 | } | |
0de2479d SM |
395 | } |
396 | ||
397 | static | |
398 | void print_one_action(const struct lttng_action *action) | |
399 | { | |
400 | enum lttng_action_type action_type; | |
401 | enum lttng_action_status action_status; | |
402 | const char *value; | |
403 | ||
404 | action_type = lttng_action_get_type(action); | |
405 | assert(action_type != LTTNG_ACTION_TYPE_GROUP); | |
406 | ||
407 | switch (action_type) { | |
408 | case LTTNG_ACTION_TYPE_NOTIFY: | |
409 | MSG("notify"); | |
410 | break; | |
411 | case LTTNG_ACTION_TYPE_START_SESSION: | |
412 | action_status = lttng_action_start_session_get_session_name( | |
413 | action, &value); | |
414 | assert(action_status == LTTNG_ACTION_STATUS_OK); | |
415 | MSG("start session `%s`", value); | |
416 | break; | |
417 | case LTTNG_ACTION_TYPE_STOP_SESSION: | |
418 | action_status = lttng_action_stop_session_get_session_name( | |
419 | action, &value); | |
420 | assert(action_status == LTTNG_ACTION_STATUS_OK); | |
421 | MSG("stop session `%s`", value); | |
422 | break; | |
423 | case LTTNG_ACTION_TYPE_ROTATE_SESSION: | |
424 | action_status = lttng_action_rotate_session_get_session_name( | |
425 | action, &value); | |
426 | assert(action_status == LTTNG_ACTION_STATUS_OK); | |
427 | MSG("rotate session `%s`", value); | |
428 | break; | |
429 | case LTTNG_ACTION_TYPE_SNAPSHOT_SESSION: | |
430 | { | |
431 | const struct lttng_snapshot_output *output; | |
432 | ||
433 | action_status = lttng_action_snapshot_session_get_session_name( | |
434 | action, &value); | |
435 | assert(action_status == LTTNG_ACTION_STATUS_OK); | |
436 | _MSG("snapshot session `%s`", value); | |
437 | ||
438 | action_status = lttng_action_snapshot_session_get_output( | |
439 | action, &output); | |
440 | if (action_status == LTTNG_ACTION_STATUS_OK) { | |
441 | const char *name; | |
442 | uint64_t max_size; | |
443 | const char *ctrl_url, *data_url; | |
444 | bool starts_with_file, starts_with_net, starts_with_net6; | |
445 | ||
446 | ctrl_url = lttng_snapshot_output_get_ctrl_url(output); | |
447 | assert(ctrl_url && strlen(ctrl_url) > 0); | |
448 | ||
449 | data_url = lttng_snapshot_output_get_data_url(output); | |
450 | assert(data_url); | |
451 | ||
452 | starts_with_file = strncmp(ctrl_url, "file://", strlen("file://")) == 0; | |
453 | starts_with_net = strncmp(ctrl_url, "net://", strlen("net://")) == 0; | |
454 | starts_with_net6 = strncmp(ctrl_url, "net6://", strlen("net6://")) == 0; | |
455 | ||
456 | if (ctrl_url[0] == '/' || starts_with_file) { | |
457 | if (starts_with_file) { | |
458 | ctrl_url += strlen("file://"); | |
459 | } | |
460 | ||
461 | _MSG(", path: %s", ctrl_url); | |
462 | } else if (starts_with_net || starts_with_net6) { | |
463 | _MSG(", url: %s", ctrl_url); | |
464 | } else { | |
465 | assert(strlen(data_url) > 0); | |
466 | ||
467 | _MSG(", control url: %s, data url: %s", ctrl_url, data_url); | |
468 | } | |
469 | ||
470 | name = lttng_snapshot_output_get_name(output); | |
471 | assert(name); | |
472 | if (strlen(name) > 0) { | |
473 | _MSG(", name: %s", name); | |
474 | } | |
475 | ||
476 | max_size = lttng_snapshot_output_get_maxsize(output); | |
477 | if (max_size != -1ULL) { | |
478 | _MSG(", max size: %" PRIu64, max_size); | |
479 | } | |
480 | } | |
481 | ||
482 | MSG(""); | |
483 | break; | |
484 | } | |
485 | ||
486 | default: | |
487 | abort(); | |
488 | } | |
489 | } | |
490 | ||
491 | static | |
492 | void print_one_trigger(const struct lttng_trigger *trigger) | |
493 | { | |
494 | const struct lttng_condition *condition; | |
495 | enum lttng_condition_type condition_type; | |
496 | const struct lttng_action *action; | |
497 | enum lttng_action_type action_type; | |
498 | enum lttng_trigger_status trigger_status; | |
499 | const char *name; | |
500 | enum lttng_trigger_firing_policy firing_policy_type; | |
501 | uint64_t threshold; | |
502 | uid_t trigger_uid; | |
503 | ||
504 | trigger_status = lttng_trigger_get_name(trigger, &name); | |
505 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
506 | ||
507 | trigger_status = lttng_trigger_get_owner_uid(trigger, &trigger_uid); | |
508 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
509 | ||
510 | MSG("- id: %s", name); | |
511 | MSG(" user id: %d", trigger_uid); | |
512 | ||
513 | trigger_status = lttng_trigger_get_firing_policy( | |
514 | trigger, &firing_policy_type, &threshold); | |
515 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
516 | ERR("Failed to get trigger's policy."); | |
517 | goto end; | |
518 | } | |
519 | ||
520 | switch (firing_policy_type) { | |
521 | case LTTNG_TRIGGER_FIRING_POLICY_EVERY_N: | |
522 | if (threshold > 1) { | |
523 | MSG(" firing policy: after every %" PRIu64 " occurences", threshold); | |
524 | } | |
525 | break; | |
526 | case LTTNG_TRIGGER_FIRING_POLICY_ONCE_AFTER_N: | |
527 | MSG(" firing policy: once after %" PRIu64 " occurences", threshold); | |
528 | break; | |
529 | default: | |
530 | abort(); | |
531 | } | |
532 | ||
533 | condition = lttng_trigger_get_const_condition(trigger); | |
534 | condition_type = lttng_condition_get_type(condition); | |
535 | MSG(" condition: %s", lttng_condition_type_str(condition_type)); | |
536 | switch (condition_type) { | |
537 | case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT: | |
538 | print_condition_event_rule_hit(condition); | |
539 | break; | |
540 | default: | |
541 | MSG(" (condition type not handled in %s)", __func__); | |
542 | break; | |
543 | } | |
544 | ||
545 | action = lttng_trigger_get_const_action(trigger); | |
546 | action_type = lttng_action_get_type(action); | |
547 | if (action_type == LTTNG_ACTION_TYPE_GROUP) { | |
548 | unsigned int count, i; | |
549 | enum lttng_action_status action_status; | |
550 | ||
551 | MSG(" actions:"); | |
552 | ||
553 | action_status = lttng_action_group_get_count(action, &count); | |
554 | assert(action_status == LTTNG_ACTION_STATUS_OK); | |
555 | ||
556 | for (i = 0; i < count; i++) { | |
557 | const struct lttng_action *subaction = | |
558 | lttng_action_group_get_at_index( | |
559 | action, i); | |
560 | ||
561 | _MSG(" "); | |
562 | print_one_action(subaction); | |
563 | } | |
564 | } else { | |
565 | _MSG(" action:"); | |
566 | print_one_action(action); | |
567 | } | |
568 | ||
569 | end: | |
570 | return; | |
571 | } | |
572 | ||
573 | static | |
574 | int compare_triggers_by_name(const void *a, const void *b) | |
575 | { | |
576 | const struct lttng_trigger *trigger_a = *((const struct lttng_trigger **) a); | |
577 | const struct lttng_trigger *trigger_b = *((const struct lttng_trigger **) b); | |
578 | const char *name_a, *name_b; | |
579 | enum lttng_trigger_status trigger_status; | |
580 | ||
581 | trigger_status = lttng_trigger_get_name(trigger_a, &name_a); | |
582 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
583 | ||
584 | trigger_status = lttng_trigger_get_name(trigger_b, &name_b); | |
585 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
586 | ||
587 | return strcmp(name_a, name_b); | |
588 | } | |
589 | ||
590 | int cmd_list_triggers(int argc, const char **argv) | |
591 | { | |
592 | int ret; | |
593 | struct argpar_parse_ret argpar_parse_ret = {}; | |
594 | struct lttng_triggers *triggers = NULL; | |
595 | int i; | |
596 | struct lttng_dynamic_pointer_array sorted_triggers; | |
597 | enum lttng_trigger_status trigger_status; | |
598 | unsigned int num_triggers; | |
599 | ||
600 | lttng_dynamic_pointer_array_init(&sorted_triggers, NULL); | |
601 | ||
602 | argpar_parse_ret = argpar_parse( | |
603 | argc - 1, argv + 1, list_trigger_options, true); | |
604 | if (!argpar_parse_ret.items) { | |
605 | ERR("%s", argpar_parse_ret.error); | |
606 | goto error; | |
607 | } | |
608 | ||
609 | for (i = 0; i < argpar_parse_ret.items->n_items; i++) { | |
610 | const struct argpar_item *item = | |
611 | argpar_parse_ret.items->items[i]; | |
612 | ||
613 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
614 | const struct argpar_item_opt *item_opt = | |
615 | (const struct argpar_item_opt *) item; | |
616 | ||
617 | switch (item_opt->descr->id) { | |
618 | case OPT_HELP: | |
619 | SHOW_HELP(); | |
620 | ret = 0; | |
621 | goto end; | |
622 | ||
623 | case OPT_LIST_OPTIONS: | |
624 | list_cmd_options_argpar(stdout, | |
625 | list_trigger_options); | |
626 | ret = 0; | |
627 | goto end; | |
628 | ||
629 | default: | |
630 | abort(); | |
631 | } | |
632 | ||
633 | } else { | |
634 | const struct argpar_item_non_opt *item_non_opt = | |
635 | (const struct argpar_item_non_opt *) item; | |
636 | ||
637 | ERR("Unexpected argument: %s", item_non_opt->arg); | |
638 | } | |
639 | } | |
640 | ||
641 | ret = lttng_list_triggers(&triggers); | |
642 | if (ret != LTTNG_OK) { | |
643 | ERR("Error listing triggers: %s.", lttng_strerror(-ret)); | |
644 | goto error; | |
645 | } | |
646 | ||
647 | trigger_status = lttng_triggers_get_count(triggers, &num_triggers); | |
648 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
649 | ERR("Failed to get trigger count."); | |
650 | goto error; | |
651 | } | |
652 | ||
653 | for (i = 0; i < num_triggers; i++) { | |
654 | const int add_ret = lttng_dynamic_pointer_array_add_pointer( | |
655 | &sorted_triggers, | |
656 | (void *) lttng_triggers_get_at_index(triggers, i)); | |
657 | ||
658 | if (add_ret) { | |
659 | ERR("Failed to allocate array of struct lttng_trigger *."); | |
660 | goto error; | |
661 | } | |
662 | } | |
663 | ||
664 | qsort(sorted_triggers.array.buffer.data, num_triggers, | |
665 | sizeof(struct lttng_trigger *), | |
666 | compare_triggers_by_name); | |
667 | ||
668 | for (i = 0; i < num_triggers; i++) { | |
669 | const struct lttng_trigger *trigger_to_print = | |
670 | (const struct lttng_trigger *) | |
671 | lttng_dynamic_pointer_array_get_pointer( | |
672 | &sorted_triggers, i); | |
673 | ||
674 | print_one_trigger(trigger_to_print); | |
675 | } | |
676 | ||
677 | ret = 0; | |
678 | goto end; | |
679 | ||
680 | error: | |
681 | ret = 1; | |
682 | ||
683 | end: | |
684 | argpar_parse_ret_fini(&argpar_parse_ret); | |
685 | lttng_triggers_destroy(triggers); | |
686 | lttng_dynamic_pointer_array_reset(&sorted_triggers); | |
687 | ||
688 | return ret; | |
689 | } |