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[lttng-tools.git] / src / bin / lttng / commands / list.c
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #define _GNU_SOURCE
19 #define _LGPL_SOURCE
20 #include <inttypes.h>
21 #include <popt.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <assert.h>
26
27 #include <common/mi-lttng.h>
28 #include <lttng/constant.h>
29
30 #include "../command.h"
31
32 static int opt_userspace;
33 static int opt_kernel;
34 static int opt_jul;
35 static int opt_log4j;
36 static int opt_python;
37 static char *opt_channel;
38 static int opt_domain;
39 static int opt_fields;
40 static int opt_syscall;
41
42 const char *indent4 = " ";
43 const char *indent6 = " ";
44 const char *indent8 = " ";
45
46 enum {
47 OPT_HELP = 1,
48 OPT_USERSPACE,
49 OPT_LIST_OPTIONS,
50 };
51
52 static struct lttng_handle *handle;
53 static struct mi_writer *writer;
54
55 static struct poptOption long_options[] = {
56 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
57 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
58 {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
59 {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
60 {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
61 {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
62 {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
63 {"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
64 {"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
65 {"fields", 'f', POPT_ARG_VAL, &opt_fields, 1, 0, 0},
66 {"syscall", 'S', POPT_ARG_VAL, &opt_syscall, 1, 0, 0},
67 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
68 {0, 0, 0, 0, 0, 0, 0}
69 };
70
71 /*
72 * usage
73 */
74 static void usage(FILE *ofp)
75 {
76 fprintf(ofp, "usage: lttng list [OPTIONS] [SESSION [SESSION OPTIONS]]\n");
77 fprintf(ofp, "\n");
78 fprintf(ofp, "With no arguments, list available tracing session(s)\n");
79 fprintf(ofp, "\n");
80 fprintf(ofp, "Without a session, -k lists available kernel events\n");
81 fprintf(ofp, "Without a session, -u lists available userspace events\n");
82 fprintf(ofp, "\n");
83 fprintf(ofp, " -h, --help Show this help\n");
84 fprintf(ofp, " --list-options Simple listing of options\n");
85 fprintf(ofp, " -k, --kernel Select kernel domain\n");
86 fprintf(ofp, " -u, --userspace Select user-space domain.\n");
87 fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
88 fprintf(ofp, " -l, --log4j Apply for Java application using LOG4J\n");
89 fprintf(ofp, " -p, --python Apply for Python application using logging\n");
90 fprintf(ofp, " -f, --fields List event fields.\n");
91 fprintf(ofp, " --syscall List available system calls.\n");
92 fprintf(ofp, "\n");
93 fprintf(ofp, "Session Options:\n");
94 fprintf(ofp, " -c, --channel NAME List details of a channel\n");
95 fprintf(ofp, " -d, --domain List available domain(s)\n");
96 fprintf(ofp, "\n");
97 }
98
99 /*
100 * Get command line from /proc for a specific pid.
101 *
102 * On success, return an allocated string pointer to the proc cmdline.
103 * On error, return NULL.
104 */
105 static char *get_cmdline_by_pid(pid_t pid)
106 {
107 int ret;
108 FILE *fp = NULL;
109 char *cmdline = NULL;
110 /* Can't go bigger than /proc/LTTNG_MAX_PID/cmdline */
111 char path[sizeof("/proc//cmdline") + sizeof(LTTNG_MAX_PID_STR) - 1];
112
113 snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
114 fp = fopen(path, "r");
115 if (fp == NULL) {
116 goto end;
117 }
118
119 /* Caller must free() *cmdline */
120 cmdline = zmalloc(PATH_MAX);
121 if (!cmdline) {
122 PERROR("malloc cmdline");
123 goto end;
124 }
125 ret = fread(cmdline, 1, PATH_MAX, fp);
126 if (ret < 0) {
127 PERROR("fread proc list");
128 }
129
130 end:
131 if (fp) {
132 fclose(fp);
133 }
134 return cmdline;
135 }
136
137 static
138 const char *active_string(int value)
139 {
140 switch (value) {
141 case 0: return "inactive";
142 case 1: return "active";
143 case -1: return "";
144 default: return NULL;
145 }
146 }
147
148 static const char *snapshot_string(int value)
149 {
150 switch (value) {
151 case 1:
152 return " snapshot";
153 default:
154 return "";
155 }
156 }
157
158 static
159 const char *enabled_string(int value)
160 {
161 switch (value) {
162 case 0: return " [disabled]";
163 case 1: return " [enabled]";
164 case -1: return "";
165 default: return NULL;
166 }
167 }
168
169 static
170 const char *filter_string(int value)
171 {
172 switch (value) {
173 case 1: return " [with filter]";
174 default: return "";
175 }
176 }
177
178 static
179 const char *exclusion_string(int value)
180 {
181 switch (value) {
182 case 1: return " [has exclusions]";
183 default: return "";
184 }
185 }
186
187 static const char *logleveltype_string(enum lttng_loglevel_type value)
188 {
189 switch (value) {
190 case LTTNG_EVENT_LOGLEVEL_ALL:
191 return ":";
192 case LTTNG_EVENT_LOGLEVEL_RANGE:
193 return " <=";
194 case LTTNG_EVENT_LOGLEVEL_SINGLE:
195 return " ==";
196 default:
197 return " <<TYPE UNKN>>";
198 }
199 }
200
201 static const char *bitness_event(enum lttng_event_flag flags)
202 {
203 if (flags & LTTNG_EVENT_FLAG_SYSCALL_32) {
204 if (flags & LTTNG_EVENT_FLAG_SYSCALL_64) {
205 return " [32/64-bit]";
206 } else {
207 return " [32-bit]";
208 }
209 } else if (flags & LTTNG_EVENT_FLAG_SYSCALL_64) {
210 return " [64-bit]";
211 } else {
212 return "";
213 }
214 }
215
216 /*
217 * Pretty print single event.
218 */
219 static void print_events(struct lttng_event *event)
220 {
221 switch (event->type) {
222 case LTTNG_EVENT_TRACEPOINT:
223 {
224 if (event->loglevel != -1) {
225 MSG("%s%s (loglevel%s %s (%d)) (type: tracepoint)%s%s%s",
226 indent6,
227 event->name,
228 logleveltype_string(event->loglevel_type),
229 mi_lttng_loglevel_string(event->loglevel, handle->domain.type),
230 event->loglevel,
231 enabled_string(event->enabled),
232 exclusion_string(event->exclusion),
233 filter_string(event->filter));
234 } else {
235 MSG("%s%s (type: tracepoint)%s%s%s",
236 indent6,
237 event->name,
238 enabled_string(event->enabled),
239 exclusion_string(event->exclusion),
240 filter_string(event->filter));
241 }
242 break;
243 }
244 case LTTNG_EVENT_FUNCTION:
245 MSG("%s%s (type: function)%s%s", indent6,
246 event->name, enabled_string(event->enabled),
247 filter_string(event->filter));
248 if (event->attr.probe.addr != 0) {
249 MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr);
250 } else {
251 MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset);
252 MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name);
253 }
254 break;
255 case LTTNG_EVENT_PROBE:
256 MSG("%s%s (type: probe)%s%s", indent6,
257 event->name, enabled_string(event->enabled),
258 filter_string(event->filter));
259 if (event->attr.probe.addr != 0) {
260 MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr);
261 } else {
262 MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset);
263 MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name);
264 }
265 break;
266 case LTTNG_EVENT_FUNCTION_ENTRY:
267 MSG("%s%s (type: function)%s%s", indent6,
268 event->name, enabled_string(event->enabled),
269 filter_string(event->filter));
270 MSG("%ssymbol: \"%s\"", indent8, event->attr.ftrace.symbol_name);
271 break;
272 case LTTNG_EVENT_SYSCALL:
273 MSG("%s%s%s%s%s", indent6, event->name,
274 (opt_syscall ? "" : " (type:syscall)"),
275 enabled_string(event->enabled),
276 bitness_event(event->flags));
277 break;
278 case LTTNG_EVENT_NOOP:
279 MSG("%s (type: noop)%s%s", indent6,
280 enabled_string(event->enabled),
281 filter_string(event->filter));
282 break;
283 case LTTNG_EVENT_ALL:
284 /* We should never have "all" events in list. */
285 assert(0);
286 break;
287 }
288 }
289
290 static const char *field_type(struct lttng_event_field *field)
291 {
292 switch(field->type) {
293 case LTTNG_EVENT_FIELD_INTEGER:
294 return "integer";
295 case LTTNG_EVENT_FIELD_ENUM:
296 return "enum";
297 case LTTNG_EVENT_FIELD_FLOAT:
298 return "float";
299 case LTTNG_EVENT_FIELD_STRING:
300 return "string";
301 case LTTNG_EVENT_FIELD_OTHER:
302 default: /* fall-through */
303 return "unknown";
304 }
305 }
306
307 /*
308 * Pretty print single event fields.
309 */
310 static void print_event_field(struct lttng_event_field *field)
311 {
312 if (!field->field_name[0]) {
313 return;
314 }
315 MSG("%sfield: %s (%s)%s", indent8, field->field_name,
316 field_type(field), field->nowrite ? " [no write]" : "");
317 }
318
319 /*
320 * Machine interface
321 * Jul and ust event listing
322 */
323 static int mi_list_agent_ust_events(struct lttng_event *events, int count,
324 struct lttng_domain *domain)
325 {
326 int ret, i;
327 pid_t cur_pid = 0;
328 char *cmdline = NULL;
329 int pid_element_open = 0;
330
331 /* Open domains element */
332 ret = mi_lttng_domains_open(writer);
333 if (ret) {
334 goto end;
335 }
336
337 /* Write domain */
338 ret = mi_lttng_domain(writer, domain, 1);
339 if (ret) {
340 goto end;
341 }
342
343 /* Open pids element */
344 ret = mi_lttng_pids_open(writer);
345 if (ret) {
346 goto end;
347 }
348
349 for (i = 0; i < count; i++) {
350 if (cur_pid != events[i].pid) {
351 if (pid_element_open) {
352 /* Close the previous events and pid element */
353 ret = mi_lttng_close_multi_element(writer, 2);
354 if (ret) {
355 goto end;
356 }
357 pid_element_open = 0;
358 }
359
360 cur_pid = events[i].pid;
361 cmdline = get_cmdline_by_pid(cur_pid);
362 if (!cmdline) {
363 ret = CMD_ERROR;
364 goto end;
365 }
366
367 if (!pid_element_open) {
368 /* Open and write a pid element */
369 ret = mi_lttng_pid(writer, cur_pid, cmdline, 1);
370 if (ret) {
371 goto error;
372 }
373
374 /* Open events element */
375 ret = mi_lttng_events_open(writer);
376 if (ret) {
377 goto error;
378 }
379
380 pid_element_open = 1;
381 }
382 free(cmdline);
383 }
384
385 /* Write an event */
386 ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type);
387 if (ret) {
388 goto end;
389 }
390 }
391
392 /* Close pids */
393 ret = mi_lttng_writer_close_element(writer);
394 if (ret) {
395 goto end;
396 }
397
398 /* Close domain, domains */
399 ret = mi_lttng_close_multi_element(writer, 2);
400 end:
401 return ret;
402 error:
403 free(cmdline);
404 return ret;
405 }
406
407 static int list_agent_events(void)
408 {
409 int i, size, ret = CMD_SUCCESS;
410 struct lttng_domain domain;
411 struct lttng_handle *handle;
412 struct lttng_event *event_list;
413 pid_t cur_pid = 0;
414 char *cmdline = NULL;
415 const char *agent_domain_str;
416
417 memset(&domain, 0, sizeof(domain));
418 if (opt_jul) {
419 domain.type = LTTNG_DOMAIN_JUL;
420 } else if (opt_log4j) {
421 domain.type = LTTNG_DOMAIN_LOG4J;
422 } else if (opt_python) {
423 domain.type = LTTNG_DOMAIN_PYTHON;
424 }
425
426 agent_domain_str = get_domain_str(domain.type);
427
428 DBG("Getting %s tracing events", agent_domain_str);
429
430 handle = lttng_create_handle(NULL, &domain);
431 if (handle == NULL) {
432 ret = CMD_ERROR;
433 goto end;
434 }
435
436 size = lttng_list_tracepoints(handle, &event_list);
437 if (size < 0) {
438 ERR("Unable to list %s events: %s", agent_domain_str,
439 lttng_strerror(size));
440 ret = CMD_ERROR;
441 goto end;
442 }
443
444 if (lttng_opt_mi) {
445 /* Mi print */
446 ret = mi_list_agent_ust_events(event_list, size, &domain);
447 if (ret) {
448 ret = CMD_ERROR;
449 goto error;
450 }
451 } else {
452 /* Pretty print */
453 MSG("%s events (Logger name):\n-------------------------",
454 agent_domain_str);
455
456 if (size == 0) {
457 MSG("None");
458 }
459
460 for (i = 0; i < size; i++) {
461 if (cur_pid != event_list[i].pid) {
462 cur_pid = event_list[i].pid;
463 cmdline = get_cmdline_by_pid(cur_pid);
464 if (cmdline == NULL) {
465 ret = CMD_ERROR;
466 goto error;
467 }
468 MSG("\nPID: %d - Name: %s", cur_pid, cmdline);
469 free(cmdline);
470 }
471 MSG("%s- %s", indent6, event_list[i].name);
472 }
473
474 MSG("");
475 }
476
477 error:
478 free(event_list);
479 end:
480 lttng_destroy_handle(handle);
481 return ret;
482 }
483
484 /*
485 * Ask session daemon for all user space tracepoints available.
486 */
487 static int list_ust_events(void)
488 {
489 int i, size, ret = CMD_SUCCESS;
490 struct lttng_domain domain;
491 struct lttng_handle *handle;
492 struct lttng_event *event_list;
493 pid_t cur_pid = 0;
494 char *cmdline = NULL;
495
496 memset(&domain, 0, sizeof(domain));
497
498 DBG("Getting UST tracing events");
499
500 domain.type = LTTNG_DOMAIN_UST;
501
502 handle = lttng_create_handle(NULL, &domain);
503 if (handle == NULL) {
504 ret = CMD_ERROR;
505 goto end;
506 }
507
508 size = lttng_list_tracepoints(handle, &event_list);
509 if (size < 0) {
510 ERR("Unable to list UST events: %s", lttng_strerror(size));
511 ret = CMD_ERROR;
512 goto error;
513 }
514
515 if (lttng_opt_mi) {
516 /* Mi print */
517 ret = mi_list_agent_ust_events(event_list, size, &domain);
518 } else {
519 /* Pretty print */
520 MSG("UST events:\n-------------");
521
522 if (size == 0) {
523 MSG("None");
524 }
525
526 for (i = 0; i < size; i++) {
527 if (cur_pid != event_list[i].pid) {
528 cur_pid = event_list[i].pid;
529 cmdline = get_cmdline_by_pid(cur_pid);
530 if (cmdline == NULL) {
531 ret = CMD_ERROR;
532 goto error;
533 }
534 MSG("\nPID: %d - Name: %s", cur_pid, cmdline);
535 free(cmdline);
536 }
537 print_events(&event_list[i]);
538 }
539
540 MSG("");
541 }
542
543 error:
544 free(event_list);
545 end:
546 lttng_destroy_handle(handle);
547 return ret;
548 }
549
550 /*
551 * Machine interface
552 * List all ust event with their fields
553 */
554 static int mi_list_ust_event_fields(struct lttng_event_field *fields, int count,
555 struct lttng_domain *domain)
556 {
557 int ret, i;
558 pid_t cur_pid = 0;
559 char *cmdline = NULL;
560 int pid_element_open = 0;
561 int event_element_open = 0;
562 struct lttng_event cur_event;
563
564 /* Open domains element */
565 ret = mi_lttng_domains_open(writer);
566 if (ret) {
567 goto end;
568 }
569
570 /* Write domain */
571 ret = mi_lttng_domain(writer, domain, 1);
572 if (ret) {
573 goto end;
574 }
575
576 /* Open pids element */
577 ret = mi_lttng_pids_open(writer);
578 if (ret) {
579 goto end;
580 }
581
582 for (i = 0; i < count; i++) {
583 if (cur_pid != fields[i].event.pid) {
584 if (pid_element_open) {
585 if (event_element_open) {
586
587 /* Close the previous field element and event. */
588 ret = mi_lttng_close_multi_element(writer, 2);
589 if (ret) {
590 goto end;
591 }
592 event_element_open = 0;
593 }
594 /* Close the previous events, pid element */
595 ret = mi_lttng_close_multi_element(writer, 2);
596 if (ret) {
597 goto end;
598 }
599 pid_element_open = 0;
600 }
601
602 cur_pid = fields[i].event.pid;
603 cmdline = get_cmdline_by_pid(cur_pid);
604 if (!pid_element_open) {
605 /* Open and write a pid element */
606 ret = mi_lttng_pid(writer, cur_pid, cmdline, 1);
607 if (ret) {
608 goto error;
609 }
610
611 /* Open events element */
612 ret = mi_lttng_events_open(writer);
613 if (ret) {
614 goto error;
615 }
616 pid_element_open = 1;
617 }
618 free(cmdline);
619 /* Wipe current event since we are about to print a new PID. */
620 memset(&cur_event, 0, sizeof(cur_event));
621 }
622
623 if (strcmp(cur_event.name, fields[i].event.name) != 0) {
624 if (event_element_open) {
625 /* Close the previous fields element and the previous event */
626 ret = mi_lttng_close_multi_element(writer, 2);
627 if (ret) {
628 goto end;
629 }
630 event_element_open = 0;
631 }
632
633 memcpy(&cur_event, &fields[i].event,
634 sizeof(cur_event));
635
636 if (!event_element_open) {
637 /* Open and write the event */
638 ret = mi_lttng_event(writer, &cur_event, 1,
639 handle->domain.type);
640 if (ret) {
641 goto end;
642 }
643
644 /* Open a fields element */
645 ret = mi_lttng_event_fields_open(writer);
646 if (ret) {
647 goto end;
648 }
649 event_element_open = 1;
650 }
651 }
652
653 /* Print the event_field */
654 ret = mi_lttng_event_field(writer, &fields[i]);
655 if (ret) {
656 goto end;
657 }
658 }
659
660 /* Close pids, domain, domains */
661 ret = mi_lttng_close_multi_element(writer, 3);
662 end:
663 return ret;
664 error:
665 free(cmdline);
666 return ret;
667 }
668
669 /*
670 * Ask session daemon for all user space tracepoint fields available.
671 */
672 static int list_ust_event_fields(void)
673 {
674 int i, size, ret = CMD_SUCCESS;
675 struct lttng_domain domain;
676 struct lttng_handle *handle;
677 struct lttng_event_field *event_field_list;
678 pid_t cur_pid = 0;
679 char *cmdline = NULL;
680
681 struct lttng_event cur_event;
682
683 memset(&domain, 0, sizeof(domain));
684 memset(&cur_event, 0, sizeof(cur_event));
685
686 DBG("Getting UST tracing event fields");
687
688 domain.type = LTTNG_DOMAIN_UST;
689
690 handle = lttng_create_handle(NULL, &domain);
691 if (handle == NULL) {
692 ret = CMD_ERROR;
693 goto end;
694 }
695
696 size = lttng_list_tracepoint_fields(handle, &event_field_list);
697 if (size < 0) {
698 ERR("Unable to list UST event fields: %s", lttng_strerror(size));
699 ret = CMD_ERROR;
700 goto end;
701 }
702
703 if (lttng_opt_mi) {
704 /* Mi print */
705 ret = mi_list_ust_event_fields(event_field_list, size, &domain);
706 if (ret) {
707 ret = CMD_ERROR;
708 goto error;
709 }
710 } else {
711 /* Pretty print */
712 MSG("UST events:\n-------------");
713
714 if (size == 0) {
715 MSG("None");
716 }
717
718 for (i = 0; i < size; i++) {
719 if (cur_pid != event_field_list[i].event.pid) {
720 cur_pid = event_field_list[i].event.pid;
721 cmdline = get_cmdline_by_pid(cur_pid);
722 if (cmdline == NULL) {
723 ret = CMD_ERROR;
724 goto error;
725 }
726 MSG("\nPID: %d - Name: %s", cur_pid, cmdline);
727 free(cmdline);
728 /* Wipe current event since we are about to print a new PID. */
729 memset(&cur_event, 0, sizeof(cur_event));
730 }
731 if (strcmp(cur_event.name, event_field_list[i].event.name) != 0) {
732 print_events(&event_field_list[i].event);
733 memcpy(&cur_event, &event_field_list[i].event,
734 sizeof(cur_event));
735 }
736 print_event_field(&event_field_list[i]);
737 }
738
739 MSG("");
740 }
741
742 error:
743 free(event_field_list);
744 end:
745 lttng_destroy_handle(handle);
746 return ret;
747 }
748
749 /*
750 * Machine interface
751 * Print a list of kernel events
752 */
753 static int mi_list_kernel_events(struct lttng_event *events, int count,
754 struct lttng_domain *domain)
755 {
756 int ret, i;
757
758 /* Open domains element */
759 ret = mi_lttng_domains_open(writer);
760 if (ret) {
761 goto end;
762 }
763
764 /* Write domain */
765 ret = mi_lttng_domain(writer, domain, 1);
766 if (ret) {
767 goto end;
768 }
769
770 /* Open events */
771 ret = mi_lttng_events_open(writer);
772 if (ret) {
773 goto end;
774 }
775
776 for (i = 0; i < count; i++) {
777 ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type);
778 if (ret) {
779 goto end;
780 }
781 }
782
783 /* close events, domain and domains */
784 ret = mi_lttng_close_multi_element(writer, 3);
785 if (ret) {
786 goto end;
787 }
788
789 end:
790 return ret;
791 }
792
793 /*
794 * Ask for all trace events in the kernel
795 */
796 static int list_kernel_events(void)
797 {
798 int i, size, ret = CMD_SUCCESS;
799 struct lttng_domain domain;
800 struct lttng_handle *handle;
801 struct lttng_event *event_list;
802
803 memset(&domain, 0, sizeof(domain));
804
805 DBG("Getting kernel tracing events");
806
807 domain.type = LTTNG_DOMAIN_KERNEL;
808
809 handle = lttng_create_handle(NULL, &domain);
810 if (handle == NULL) {
811 ret = CMD_ERROR;
812 goto error;
813 }
814
815 size = lttng_list_tracepoints(handle, &event_list);
816 if (size < 0) {
817 ERR("Unable to list kernel events: %s", lttng_strerror(size));
818 lttng_destroy_handle(handle);
819 return CMD_ERROR;
820 }
821
822 if (lttng_opt_mi) {
823 /* Mi print */
824 ret = mi_list_kernel_events(event_list, size, &domain);
825 if (ret) {
826 ret = CMD_ERROR;
827 goto end;
828 }
829 } else {
830 MSG("Kernel events:\n-------------");
831
832 for (i = 0; i < size; i++) {
833 print_events(&event_list[i]);
834 }
835
836 MSG("");
837 }
838
839 end:
840 free(event_list);
841
842 lttng_destroy_handle(handle);
843 return ret;
844
845 error:
846 lttng_destroy_handle(handle);
847 return ret;
848 }
849
850 /*
851 * Machine interface
852 * Print a list of system calls.
853 */
854 static int mi_list_syscalls(struct lttng_event *events, int count)
855 {
856 int ret, i;
857
858 /* Open events */
859 ret = mi_lttng_events_open(writer);
860 if (ret) {
861 goto end;
862 }
863
864 for (i = 0; i < count; i++) {
865 ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type);
866 if (ret) {
867 goto end;
868 }
869 }
870
871 /* Close events. */
872 ret = mi_lttng_writer_close_element(writer);
873 if (ret) {
874 goto end;
875 }
876
877 end:
878 return ret;
879 }
880
881 /*
882 * Ask for kernel system calls.
883 */
884 static int list_syscalls(void)
885 {
886 int i, size, ret = CMD_SUCCESS;
887 struct lttng_event *event_list;
888
889 DBG("Getting kernel system call events");
890
891 size = lttng_list_syscalls(&event_list);
892 if (size < 0) {
893 ERR("Unable to list system calls: %s", lttng_strerror(size));
894 ret = CMD_ERROR;
895 goto error;
896 }
897
898 if (lttng_opt_mi) {
899 /* Mi print */
900 ret = mi_list_syscalls(event_list, size);
901 if (ret) {
902 ret = CMD_ERROR;
903 goto end;
904 }
905 } else {
906 MSG("System calls:\n-------------");
907
908 for (i = 0; i < size; i++) {
909 print_events(&event_list[i]);
910 }
911
912 MSG("");
913 }
914
915 end:
916 free(event_list);
917 return ret;
918
919 error:
920 return ret;
921 }
922
923 /*
924 * Machine Interface
925 * Print a list of agent events
926 */
927 static int mi_list_session_agent_events(struct lttng_event *events, int count)
928 {
929 int ret, i;
930
931 /* Open events element */
932 ret = mi_lttng_events_open(writer);
933 if (ret) {
934 goto end;
935 }
936
937 for (i = 0; i < count; i++) {
938 ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type);
939 if (ret) {
940 goto end;
941 }
942 }
943
944 /* Close events element */
945 ret = mi_lttng_writer_close_element(writer);
946
947 end:
948 return ret;
949 }
950
951 /*
952 * List agent events for a specific session using the handle.
953 *
954 * Return CMD_SUCCESS on success else a negative value.
955 */
956 static int list_session_agent_events(void)
957 {
958 int ret = CMD_SUCCESS, count, i;
959 struct lttng_event *events = NULL;
960
961 count = lttng_list_events(handle, "", &events);
962 if (count < 0) {
963 ret = CMD_ERROR;
964 ERR("%s", lttng_strerror(count));
965 goto error;
966 }
967
968 if (lttng_opt_mi) {
969 /* Mi print */
970 ret = mi_list_session_agent_events(events, count);
971 if (ret) {
972 ret = CMD_ERROR;
973 goto end;
974 }
975 } else {
976 /* Pretty print */
977 MSG("Events (Logger name):\n---------------------");
978 if (count == 0) {
979 MSG("%sNone\n", indent6);
980 goto end;
981 }
982
983 for (i = 0; i < count; i++) {
984 MSG("%s- %s%s (loglevel%s %s)", indent4, events[i].name,
985 enabled_string(events[i].enabled),
986 logleveltype_string(events[i].loglevel_type),
987 mi_lttng_loglevel_string(events[i].loglevel,
988 handle->domain.type));
989 }
990
991 MSG("");
992 }
993
994 end:
995 free(events);
996 error:
997 return ret;
998 }
999
1000 /*
1001 * Machine interface
1002 * print a list of event
1003 */
1004 static int mi_list_events(struct lttng_event *events, int count)
1005 {
1006 int ret, i;
1007
1008 /* Open events element */
1009 ret = mi_lttng_events_open(writer);
1010 if (ret) {
1011 goto end;
1012 }
1013
1014 for (i = 0; i < count; i++) {
1015 ret = mi_lttng_event(writer, &events[i], 0, handle->domain.type);
1016 if (ret) {
1017 goto end;
1018 }
1019 }
1020
1021 /* Close events element */
1022 ret = mi_lttng_writer_close_element(writer);
1023
1024 end:
1025 return ret;
1026 }
1027
1028 /*
1029 * List events of channel of session and domain.
1030 */
1031 static int list_events(const char *channel_name)
1032 {
1033 int ret = CMD_SUCCESS, count, i;
1034 struct lttng_event *events = NULL;
1035
1036 count = lttng_list_events(handle, channel_name, &events);
1037 if (count < 0) {
1038 ret = CMD_ERROR;
1039 ERR("%s", lttng_strerror(count));
1040 goto error;
1041 }
1042
1043 if (lttng_opt_mi) {
1044 /* Mi print */
1045 ret = mi_list_events(events, count);
1046 if (ret) {
1047 ret = CMD_ERROR;
1048 goto end;
1049 }
1050 } else {
1051 /* Pretty print */
1052 MSG("\n%sEvents:", indent4);
1053 if (count == 0) {
1054 MSG("%sNone\n", indent6);
1055 goto end;
1056 }
1057
1058 for (i = 0; i < count; i++) {
1059 print_events(&events[i]);
1060 }
1061
1062 MSG("");
1063 }
1064 end:
1065 free(events);
1066 error:
1067 return ret;
1068 }
1069
1070 /*
1071 * Pretty print channel
1072 */
1073 static void print_channel(struct lttng_channel *channel)
1074 {
1075 MSG("- %s:%s\n", channel->name, enabled_string(channel->enabled));
1076
1077 MSG("%sAttributes:", indent4);
1078 MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite);
1079 MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size);
1080 MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf);
1081 MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval);
1082 MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval);
1083 MSG("%strace file count: %" PRIu64, indent6, channel->attr.tracefile_count);
1084 MSG("%strace file size (bytes): %" PRIu64, indent6, channel->attr.tracefile_size);
1085 switch (channel->attr.output) {
1086 case LTTNG_EVENT_SPLICE:
1087 MSG("%soutput: splice()", indent6);
1088 break;
1089 case LTTNG_EVENT_MMAP:
1090 MSG("%soutput: mmap()", indent6);
1091 break;
1092 }
1093 }
1094
1095 /*
1096 * Machine interface
1097 * Print a list of channel
1098 *
1099 */
1100 static int mi_list_channels(struct lttng_channel *channels, int count,
1101 const char *channel_name)
1102 {
1103 int i, ret;
1104 unsigned int chan_found = 0;
1105
1106 /* Open channels element */
1107 ret = mi_lttng_channels_open(writer);
1108 if (ret) {
1109 goto error;
1110 }
1111
1112 for (i = 0; i < count; i++) {
1113 if (channel_name != NULL) {
1114 if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
1115 chan_found = 1;
1116 } else {
1117 continue;
1118 }
1119 }
1120
1121 /* Write channel element and leave it open */
1122 ret = mi_lttng_channel(writer, &channels[i], 1);
1123 if (ret) {
1124 goto error;
1125 }
1126
1127 /* Listing events per channel */
1128 ret = list_events(channels[i].name);
1129 if (ret) {
1130 goto error;
1131 }
1132
1133 /* Closing the channel element we opened earlier */
1134 ret = mi_lttng_writer_close_element(writer);
1135 if (ret) {
1136 goto error;
1137 }
1138
1139 if (chan_found) {
1140 break;
1141 }
1142 }
1143
1144 /* Close channels element */
1145 ret = mi_lttng_writer_close_element(writer);
1146 if (ret) {
1147 goto error;
1148 }
1149
1150 error:
1151 return ret;
1152 }
1153
1154 /*
1155 * List channel(s) of session and domain.
1156 *
1157 * If channel_name is NULL, all channels are listed.
1158 */
1159 static int list_channels(const char *channel_name)
1160 {
1161 int count, i, ret = CMD_SUCCESS;
1162 unsigned int chan_found = 0;
1163 struct lttng_channel *channels = NULL;
1164
1165 DBG("Listing channel(s) (%s)", channel_name ? : "<all>");
1166
1167 count = lttng_list_channels(handle, &channels);
1168 if (count < 0) {
1169 switch (-count) {
1170 case LTTNG_ERR_KERN_CHAN_NOT_FOUND:
1171 if (lttng_opt_mi) {
1172 /* When printing mi this is not an error
1173 * but an empty channels element */
1174 count = 0;
1175 } else {
1176 ret = CMD_SUCCESS;
1177 WARN("No kernel channel");
1178 goto error_channels;
1179 }
1180 break;
1181 default:
1182 /* We had a real error */
1183 ret = CMD_ERROR;
1184 ERR("%s", lttng_strerror(count));
1185 goto error_channels;
1186 break;
1187 }
1188 }
1189
1190 if (lttng_opt_mi) {
1191 /* Mi print */
1192 ret = mi_list_channels(channels, count, channel_name);
1193 if (ret) {
1194 ret = CMD_ERROR;
1195 goto error;
1196 }
1197 } else {
1198 /* Pretty print */
1199 if (count) {
1200 MSG("Channels:\n-------------");
1201 }
1202
1203 for (i = 0; i < count; i++) {
1204 if (channel_name != NULL) {
1205 if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
1206 chan_found = 1;
1207 } else {
1208 continue;
1209 }
1210 }
1211 print_channel(&channels[i]);
1212
1213 /* Listing events per channel */
1214 ret = list_events(channels[i].name);
1215 if (ret) {
1216 goto error;
1217 }
1218
1219 if (chan_found) {
1220 break;
1221 }
1222 }
1223
1224 if (!chan_found && channel_name != NULL) {
1225 ret = CMD_ERROR;
1226 ERR("Channel %s not found", channel_name);
1227 goto error;
1228 }
1229 }
1230 error:
1231 free(channels);
1232
1233 error_channels:
1234 return ret;
1235 }
1236
1237 /*
1238 * List tracker PID(s) of session and domain.
1239 */
1240 static int list_tracker_pids(void)
1241 {
1242 int enabled, ret;
1243 int *pids = NULL;
1244 size_t nr_pids;
1245
1246 ret = lttng_list_tracker_pids(handle,
1247 &enabled, &pids, &nr_pids);
1248 if (ret) {
1249 return ret;
1250 }
1251 if (enabled) {
1252 int i;
1253 _MSG("PID tracker: [");
1254
1255 for (i = 0; i < nr_pids; i++) {
1256 if (i) {
1257 _MSG(",");
1258 }
1259 _MSG(" %d", pids[i]);
1260 }
1261 _MSG(" ]\n\n");
1262 }
1263 free(pids);
1264 return 0;
1265 }
1266
1267 /*
1268 * Machine interface
1269 * Find the session with session_name as name
1270 * and print his informations.
1271 */
1272 static int mi_list_session(const char *session_name,
1273 struct lttng_session *sessions, int count)
1274 {
1275 int ret, i;
1276 unsigned int session_found = 0;
1277
1278 if (session_name == NULL) {
1279 ret = -LTTNG_ERR_SESS_NOT_FOUND;
1280 goto end;
1281 }
1282
1283 for (i = 0; i < count; i++) {
1284 if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
1285 /* We need to leave it open to append other informations
1286 * like domain, channel, events etc.*/
1287 session_found = 1;
1288 ret = mi_lttng_session(writer, &sessions[i], 1);
1289 if (ret) {
1290 goto end;
1291 }
1292 break;
1293 }
1294 }
1295
1296 if (!session_found) {
1297 ERR("Session '%s' not found", session_name);
1298 ret = -LTTNG_ERR_SESS_NOT_FOUND;
1299 goto end;
1300 }
1301
1302 end:
1303 return ret;
1304 }
1305
1306 /*
1307 * Machine interface
1308 * List all availables session
1309 */
1310 static int mi_list_sessions(struct lttng_session *sessions, int count)
1311 {
1312 int ret, i;
1313
1314 /* Opening sessions element */
1315 ret = mi_lttng_sessions_open(writer);
1316 if (ret) {
1317 goto end;
1318 }
1319
1320 /* Listing sessions */
1321 for (i = 0; i < count; i++) {
1322 ret = mi_lttng_session(writer, &sessions[i], 0);
1323 if (ret) {
1324 goto end;
1325 }
1326 }
1327
1328 /* Closing sessions element */
1329 ret = mi_lttng_writer_close_element(writer);
1330 if (ret) {
1331 goto end;
1332 }
1333
1334 end:
1335 return ret;
1336 }
1337
1338 /*
1339 * List available tracing session. List only basic information.
1340 *
1341 * If session_name is NULL, all sessions are listed.
1342 */
1343 static int list_sessions(const char *session_name)
1344 {
1345 int ret = CMD_SUCCESS;
1346 int count, i;
1347 unsigned int session_found = 0;
1348 struct lttng_session *sessions;
1349
1350 count = lttng_list_sessions(&sessions);
1351 DBG("Session count %d", count);
1352 if (count < 0) {
1353 ret = CMD_ERROR;
1354 ERR("%s", lttng_strerror(count));
1355 goto end;
1356 }
1357
1358 if (lttng_opt_mi) {
1359 /* Mi */
1360 if (session_name == NULL) {
1361 /* List all session */
1362 ret = mi_list_sessions(sessions, count);
1363 } else {
1364 /* Note : this return an open session element */
1365 ret = mi_list_session(session_name, sessions, count);
1366 }
1367 if (ret) {
1368 ret = CMD_ERROR;
1369 goto error;
1370 }
1371 } else {
1372 /* Pretty print */
1373 if (count == 0) {
1374 MSG("Currently no available tracing session");
1375 goto end;
1376 }
1377
1378 if (session_name == NULL) {
1379 MSG("Available tracing sessions:");
1380 }
1381
1382
1383 for (i = 0; i < count; i++) {
1384 if (session_name != NULL) {
1385 if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
1386 session_found = 1;
1387 MSG("Tracing session %s: [%s%s]", session_name,
1388 active_string(sessions[i].enabled),
1389 snapshot_string(sessions[i].snapshot_mode));
1390 MSG("%sTrace path: %s\n", indent4, sessions[i].path);
1391 break;
1392 }
1393 } else {
1394 MSG(" %d) %s (%s) [%s%s]", i + 1,
1395 sessions[i].name, sessions[i].path,
1396 active_string(sessions[i].enabled),
1397 snapshot_string(sessions[i].snapshot_mode));
1398 MSG("%sTrace path: %s", indent4, sessions[i].path);
1399 if (sessions[i].live_timer_interval != 0) {
1400 MSG("%sLive timer interval (usec): %u", indent4,
1401 sessions[i].live_timer_interval);
1402 }
1403 MSG("");
1404 }
1405 }
1406
1407 if (!session_found && session_name != NULL) {
1408 ERR("Session '%s' not found", session_name);
1409 ret = CMD_ERROR;
1410 goto error;
1411 }
1412
1413 if (session_name == NULL) {
1414 MSG("\nUse lttng list <session_name> for more details");
1415 }
1416 }
1417
1418 error:
1419 free(sessions);
1420 end:
1421 return ret;
1422 }
1423
1424
1425 /*
1426 * Machine Interface
1427 * list available domain(s) for a session.
1428 */
1429 static int mi_list_domains(struct lttng_domain *domains, int count)
1430 {
1431 int i, ret;
1432 /* Open domains element */
1433 ret = mi_lttng_domains_open(writer);
1434 if (ret) {
1435 goto end;
1436 }
1437
1438 for (i = 0; i < count; i++) {
1439 ret = mi_lttng_domain(writer, &domains[i] , 0);
1440 if (ret) {
1441 goto end;
1442 }
1443 }
1444
1445 /* Closing domains element */
1446 ret = mi_lttng_writer_close_element(writer);
1447 if (ret) {
1448 goto end;
1449 }
1450 end:
1451 return ret;
1452 }
1453
1454 /*
1455 * List available domain(s) for a session.
1456 */
1457 static int list_domains(const char *session_name)
1458 {
1459 int i, count, ret = CMD_SUCCESS;
1460 struct lttng_domain *domains = NULL;
1461
1462
1463 count = lttng_list_domains(session_name, &domains);
1464 if (count < 0) {
1465 ret = CMD_ERROR;
1466 ERR("%s", lttng_strerror(count));
1467 goto end;
1468 }
1469
1470 if (lttng_opt_mi) {
1471 /* Mi output */
1472 ret = mi_list_domains(domains, count);
1473 if (ret) {
1474 ret = CMD_ERROR;
1475 goto error;
1476 }
1477 } else {
1478 /* Pretty print */
1479 MSG("Domains:\n-------------");
1480 if (count == 0) {
1481 MSG(" None");
1482 goto end;
1483 }
1484
1485 for (i = 0; i < count; i++) {
1486 switch (domains[i].type) {
1487 case LTTNG_DOMAIN_KERNEL:
1488 MSG(" - Kernel");
1489 break;
1490 case LTTNG_DOMAIN_UST:
1491 MSG(" - UST global");
1492 break;
1493 case LTTNG_DOMAIN_JUL:
1494 MSG(" - JUL (Java Util Logging)");
1495 break;
1496 case LTTNG_DOMAIN_LOG4J:
1497 MSG(" - LOG4j (Logging for Java)");
1498 break;
1499 case LTTNG_DOMAIN_PYTHON:
1500 MSG(" - Python (logging)");
1501 break;
1502 default:
1503 break;
1504 }
1505 }
1506 }
1507
1508 error:
1509 free(domains);
1510
1511 end:
1512 return ret;
1513 }
1514
1515 /*
1516 * The 'list <options>' first level command
1517 */
1518 int cmd_list(int argc, const char **argv)
1519 {
1520 int opt, ret = CMD_SUCCESS;
1521 const char *session_name;
1522 static poptContext pc;
1523 struct lttng_domain domain;
1524 struct lttng_domain *domains = NULL;
1525
1526 memset(&domain, 0, sizeof(domain));
1527
1528 if (argc < 1) {
1529 usage(stderr);
1530 ret = CMD_ERROR;
1531 goto end;
1532 }
1533
1534 pc = poptGetContext(NULL, argc, argv, long_options, 0);
1535 poptReadDefaultConfig(pc, 0);
1536
1537 while ((opt = poptGetNextOpt(pc)) != -1) {
1538 switch (opt) {
1539 case OPT_HELP:
1540 usage(stdout);
1541 goto end;
1542 case OPT_USERSPACE:
1543 opt_userspace = 1;
1544 break;
1545 case OPT_LIST_OPTIONS:
1546 list_cmd_options(stdout, long_options);
1547 goto end;
1548 default:
1549 usage(stderr);
1550 ret = CMD_UNDEFINED;
1551 goto end;
1552 }
1553 }
1554
1555 /* Mi check */
1556 if (lttng_opt_mi) {
1557 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
1558 if (!writer) {
1559 ret = CMD_ERROR;
1560 goto end;
1561 }
1562
1563 /* Open command element */
1564 ret = mi_lttng_writer_command_open(writer,
1565 mi_lttng_element_command_list);
1566 if (ret) {
1567 ret = CMD_ERROR;
1568 goto end;
1569 }
1570
1571 /* Open output element */
1572 ret = mi_lttng_writer_open_element(writer,
1573 mi_lttng_element_command_output);
1574 if (ret) {
1575 ret = CMD_ERROR;
1576 goto end;
1577 }
1578 }
1579
1580 /* Get session name (trailing argument) */
1581 session_name = poptGetArg(pc);
1582 DBG2("Session name: %s", session_name);
1583
1584 if (opt_kernel) {
1585 domain.type = LTTNG_DOMAIN_KERNEL;
1586 } else if (opt_userspace) {
1587 DBG2("Listing userspace global domain");
1588 domain.type = LTTNG_DOMAIN_UST;
1589 } else if (opt_jul) {
1590 DBG2("Listing JUL domain");
1591 domain.type = LTTNG_DOMAIN_JUL;
1592 } else if (opt_log4j) {
1593 domain.type = LTTNG_DOMAIN_LOG4J;
1594 } else if (opt_python) {
1595 domain.type = LTTNG_DOMAIN_PYTHON;
1596 }
1597
1598 if (!opt_kernel && opt_syscall) {
1599 WARN("--syscall will only work with the Kernel domain (-k)");
1600 ret = CMD_ERROR;
1601 goto end;
1602 }
1603
1604 if (opt_kernel || opt_userspace || opt_jul || opt_log4j || opt_python) {
1605 handle = lttng_create_handle(session_name, &domain);
1606 if (handle == NULL) {
1607 ret = CMD_FATAL;
1608 goto end;
1609 }
1610 }
1611
1612 if (session_name == NULL) {
1613 if (!opt_kernel && !opt_userspace && !opt_jul && !opt_log4j
1614 && !opt_python) {
1615 ret = list_sessions(NULL);
1616 if (ret) {
1617 goto end;
1618 }
1619 }
1620 if (opt_kernel) {
1621 if (opt_syscall) {
1622 ret = list_syscalls();
1623 if (ret) {
1624 goto end;
1625 }
1626 } else {
1627 ret = list_kernel_events();
1628 if (ret) {
1629 goto end;
1630 }
1631 }
1632 }
1633 if (opt_userspace) {
1634 if (opt_fields) {
1635 ret = list_ust_event_fields();
1636 } else {
1637 ret = list_ust_events();
1638 }
1639 if (ret) {
1640 goto end;
1641 }
1642 }
1643 if (opt_jul || opt_log4j || opt_python) {
1644 ret = list_agent_events();
1645 if (ret) {
1646 goto end;
1647 }
1648 }
1649 } else {
1650 /* List session attributes */
1651 if (lttng_opt_mi) {
1652 /* Open element sessions
1653 * Present for xml consistency */
1654 ret = mi_lttng_sessions_open(writer);
1655 if (ret) {
1656 goto end;
1657 }
1658 }
1659 /* MI: the ouptut of list_sessions is an unclosed session element */
1660 ret = list_sessions(session_name);
1661 if (ret) {
1662 goto end;
1663 }
1664
1665 /* Domain listing */
1666 if (opt_domain) {
1667 ret = list_domains(session_name);
1668 goto end;
1669 }
1670
1671 /* Channel listing */
1672 if (opt_kernel || opt_userspace) {
1673 if (lttng_opt_mi) {
1674 /* Add of domains and domain element for xml
1675 * consistency and validation
1676 */
1677 ret = mi_lttng_domains_open(writer);
1678 if (ret) {
1679 goto end;
1680 }
1681
1682 /* Open domain and leave it open for
1683 * nested channels printing */
1684 ret = mi_lttng_domain(writer, &domain, 1);
1685 if (ret) {
1686 goto end;
1687 }
1688
1689 }
1690
1691 ret = list_tracker_pids();
1692 if (ret) {
1693 goto end;
1694 }
1695
1696 ret = list_channels(opt_channel);
1697 if (ret) {
1698 goto end;
1699 }
1700
1701 if (lttng_opt_mi) {
1702 /* Close domain and domain element */
1703 ret = mi_lttng_close_multi_element(writer, 2);
1704 }
1705 if (ret) {
1706 goto end;
1707 }
1708
1709
1710 } else {
1711 int i, nb_domain;
1712
1713 /* We want all domain(s) */
1714 nb_domain = lttng_list_domains(session_name, &domains);
1715 if (nb_domain < 0) {
1716 ret = CMD_ERROR;
1717 ERR("%s", lttng_strerror(nb_domain));
1718 goto end;
1719 }
1720
1721 if (lttng_opt_mi) {
1722 ret = mi_lttng_domains_open(writer);
1723 if (ret) {
1724 ret = CMD_ERROR;
1725 goto end;
1726 }
1727 }
1728
1729 for (i = 0; i < nb_domain; i++) {
1730 switch (domains[i].type) {
1731 case LTTNG_DOMAIN_KERNEL:
1732 MSG("=== Domain: Kernel ===\n");
1733 break;
1734 case LTTNG_DOMAIN_UST:
1735 MSG("=== Domain: UST global ===\n");
1736 MSG("Buffer type: %s\n",
1737 domains[i].buf_type ==
1738 LTTNG_BUFFER_PER_PID ? "per PID" : "per UID");
1739 break;
1740 case LTTNG_DOMAIN_JUL:
1741 MSG("=== Domain: JUL (Java Util Logging) ===\n");
1742 break;
1743 case LTTNG_DOMAIN_LOG4J:
1744 MSG("=== Domain: LOG4j (Logging for Java) ===\n");
1745 break;
1746 case LTTNG_DOMAIN_PYTHON:
1747 MSG("=== Domain: Python (logging) ===\n");
1748 break;
1749 default:
1750 MSG("=== Domain: Unimplemented ===\n");
1751 break;
1752 }
1753
1754 if (lttng_opt_mi) {
1755 ret = mi_lttng_domain(writer, &domains[i], 1);
1756 if (ret) {
1757 ret = CMD_ERROR;
1758 goto end;
1759 }
1760 }
1761
1762 /* Clean handle before creating a new one */
1763 if (handle) {
1764 lttng_destroy_handle(handle);
1765 }
1766
1767 handle = lttng_create_handle(session_name, &domains[i]);
1768 if (handle == NULL) {
1769 ret = CMD_FATAL;
1770 goto end;
1771 }
1772
1773 if (domains[i].type == LTTNG_DOMAIN_JUL ||
1774 domains[i].type == LTTNG_DOMAIN_LOG4J ||
1775 domains[i].type == LTTNG_DOMAIN_PYTHON) {
1776 ret = list_session_agent_events();
1777 if (ret) {
1778 goto end;
1779 }
1780 continue;
1781 }
1782
1783 switch (domains[i].type) {
1784 case LTTNG_DOMAIN_KERNEL:
1785 case LTTNG_DOMAIN_UST:
1786 ret = list_tracker_pids();
1787 if (ret) {
1788 goto end;
1789 }
1790 break;
1791 default:
1792 break;
1793 }
1794
1795 ret = list_channels(opt_channel);
1796 if (ret) {
1797 goto end;
1798 }
1799
1800 if (lttng_opt_mi) {
1801 /* Close domain element */
1802 ret = mi_lttng_writer_close_element(writer);
1803 if (ret) {
1804 ret = CMD_ERROR;
1805 goto end;
1806 }
1807 }
1808
1809 }
1810 if (lttng_opt_mi) {
1811 /* Close the domains, session and sessions element */
1812 ret = mi_lttng_close_multi_element(writer, 3);
1813 if (ret) {
1814 ret = CMD_ERROR;
1815 goto end;
1816 }
1817 }
1818 }
1819 }
1820
1821 /* Mi closing */
1822 if (lttng_opt_mi) {
1823 /* Close output element */
1824 ret = mi_lttng_writer_close_element(writer);
1825 if (ret) {
1826 ret = CMD_ERROR;
1827 goto end;
1828 }
1829
1830 /* Command element close */
1831 ret = mi_lttng_writer_command_close(writer);
1832 if (ret) {
1833 ret = CMD_ERROR;
1834 goto end;
1835 }
1836 }
1837 end:
1838 /* Mi clean-up */
1839 if (writer && mi_lttng_writer_destroy(writer)) {
1840 /* Preserve original error code */
1841 ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL;
1842 }
1843
1844 free(domains);
1845 if (handle) {
1846 lttng_destroy_handle(handle);
1847 }
1848
1849 poptFreeContext(pc);
1850 return ret;
1851 }
LTTng 2.0 tools and control repository
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