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Enable multi domain per command
[lttng-tools.git] / src / bin / lttng / commands / enable_events.c
CommitLineData
f3ed775e
DG		 1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
d14d33bf
AM		 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.
f3ed775e
DG		 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 *
d14d33bf
AM		 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.
f3ed775e
DG		 16 */
17
6c1c0768 18#define _LGPL_SOURCE
b2064f54 19#include <assert.h>
f3ed775e
DG		 20#include <popt.h>
21#include <stdio.h>
22#include <stdlib.h>
f3ed775e
DG		 23#include <sys/stat.h>
24#include <sys/types.h>
25#include <unistd.h>
5a0de755 26#include <inttypes.h>
8f0d098b 27#include <ctype.h>
f3ed775e 28
42224349 29#include <src/common/sessiond-comm/sessiond-comm.h>
f5436bfc 30#include <common/compat/string.h>
f3ed775e 31
89476427
JRJ		 32/* Mi dependancy */
33#include <common/mi-lttng.h>
34
35#include "../command.h"
36
8ab7c0d9
MD		 37#if (LTTNG_SYMBOL_NAME_LEN == 256)
38#define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255"
39#endif
40
f3ed775e
DG		 41static char *opt_event_list;
42static int opt_event_type;
0cda4f28
MD		 43static const char *opt_loglevel;
44static int opt_loglevel_type;
6181537c 45static int opt_kernel;
5440dc42 46static char *opt_session_name;
721b94fe 47static int opt_domain;
f3ed775e 48static int opt_enable_all;
cf0e5467 49static char *opt_probe;
8f0d098b 50static char *opt_function;
f3ed775e 51static char *opt_channel_name;
53a80697 52static char *opt_filter;
fac3366c 53static char *opt_exclude;
f3ed775e
DG		 54
55enum {
56 OPT_HELP = 1,
f3ed775e 57 OPT_TRACEPOINT,
cf0e5467 58 OPT_PROBE,
f3ed775e 59 OPT_FUNCTION,
a54bd42d 60 OPT_SYSCALL,
0cda4f28
MD		 61 OPT_LOGLEVEL,
62 OPT_LOGLEVEL_ONLY,
679b4943 63 OPT_LIST_OPTIONS,
53a80697 64 OPT_FILTER,
fac3366c 65 OPT_EXCLUDE,
f3ed775e
DG		 66};
67
cd80958d 68static struct lttng_handle *handle;
89476427 69static struct mi_writer *writer;
cd80958d 70
f3ed775e
DG		 71static struct poptOption long_options[] = {
72 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
e14f64a8 73 {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0},
f3ed775e 74 {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
721b94fe
JR		 75 {"kernel", 'k', POPT_ARG_VAL, &opt_domain, LTTNG_DOMAIN_KERNEL, 0, 0},
76 {"userspace", 'u', POPT_ARG_VAL, &opt_domain, LTTNG_DOMAIN_UST, 0, 0},
77 {"jul", 'j', POPT_ARG_VAL, &opt_domain, LTTNG_DOMAIN_JUL, 0, 0},
78 {"log4j", 'l', POPT_ARG_VAL, &opt_domain, LTTNG_DOMAIN_LOG4J, 0, 0},
79 {"python", 'p', POPT_ARG_VAL, &opt_domain, LTTNG_DOMAIN_PYTHON, 0, 0},
f3ed775e 80 {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0},
7ebae521 81 {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0},
40e9d5d3 82 {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0},
7ebae521 83 {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0},
0cda4f28
MD		 84 {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0},
85 {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0},
53a80697 86 {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0},
fac3366c 87 {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0},
721b94fe 88 {"session", 's', POPT_ARG_NONE, 0, 0, 0, 0},
f3ed775e
DG		 89 {0, 0, 0, 0, 0, 0, 0}
90};
91
721b94fe
JR		 92static struct poptOption global_long_options[] = {
93 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
94 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
95 {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
96 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
97 {0, 0, 0, 0, 0, 0, 0}
98};
0d63dd19 99/*
6181537c 100 * Parse probe options.
0d63dd19 101 */
cf0e5467 102static int parse_probe_opts(struct lttng_event *ev, char *opt)
0d63dd19 103{
49d4e302
JRJ		 104 int ret = CMD_SUCCESS;
105 int match;
8ff0bbd0 106 char s_hex[19];
8ab7c0d9 107#define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */
0d63dd19
DG		 108 char name[LTTNG_SYMBOL_NAME_LEN];
109
110 if (opt == NULL) {
49d4e302 111 ret = CMD_ERROR;
8f0d098b 112 goto end;
0d63dd19
DG		 113 }
114
115 /* Check for symbol+offset */
49d4e302 116 match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API
8ab7c0d9 117 "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex);
49d4e302 118 if (match == 2) {
7d29a247 119 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 120 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
cf0e5467 121 DBG("probe symbol %s", ev->attr.probe.symbol_name);
9d035200 122 if (*s_hex == '\0') {
8ff0bbd0 123 ERR("Invalid probe offset %s", s_hex);
49d4e302 124 ret = CMD_ERROR;
8f0d098b 125 goto end;
0d63dd19 126 }
8ff0bbd0 127 ev->attr.probe.offset = strtoul(s_hex, NULL, 0);
cf0e5467 128 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
3000dc78 129 ev->attr.probe.addr = 0;
8f0d098b
MD		 130 goto end;
131 }
132
133 /* Check for symbol */
134 if (isalpha(name[0])) {
49d4e302 135 match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s",
8ab7c0d9 136 name);
49d4e302 137 if (match == 1) {
8f0d098b 138 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 139 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
8f0d098b
MD		 140 DBG("probe symbol %s", ev->attr.probe.symbol_name);
141 ev->attr.probe.offset = 0;
142 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
143 ev->attr.probe.addr = 0;
144 goto end;
145 }
0d63dd19
DG		 146 }
147
148 /* Check for address */
49d4e302
JRJ		 149 match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex);
150 if (match > 0) {
9d035200 151 if (*s_hex == '\0') {
8ff0bbd0 152 ERR("Invalid probe address %s", s_hex);
49d4e302 153 ret = CMD_ERROR;
8f0d098b 154 goto end;
0d63dd19 155 }
8ff0bbd0 156 ev->attr.probe.addr = strtoul(s_hex, NULL, 0);
cf0e5467 157 DBG("probe addr %" PRIu64, ev->attr.probe.addr);
3000dc78
DG		 158 ev->attr.probe.offset = 0;
159 memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN);
8f0d098b 160 goto end;
0d63dd19
DG		 161 }
162
163 /* No match */
49d4e302 164 ret = CMD_ERROR;
0d63dd19 165
8f0d098b 166end:
0d63dd19
DG		 167 return ret;
168}
169
5cdb6027
DG		 170/*
171 * Maps LOG4j loglevel from string to value
172 */
173static int loglevel_log4j_str_to_value(const char *inputstr)
174{
175 int i = 0;
176 char str[LTTNG_SYMBOL_NAME_LEN];
177
3712b110
JG		 178 if (!inputstr || strlen(inputstr) == 0) {
179 return -1;
180 }
181
5cdb6027
DG		 182 /*
183 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
184 * added at the end of the loop so a the upper bound we avoid the overflow.
185 */
186 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
187 str[i] = toupper(inputstr[i]);
188 i++;
189 }
190 str[i] = '\0';
191
192 if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) {
193 return LTTNG_LOGLEVEL_LOG4J_OFF;
194 } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) {
195 return LTTNG_LOGLEVEL_LOG4J_FATAL;
196 } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) {
197 return LTTNG_LOGLEVEL_LOG4J_ERROR;
198 } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) {
199 return LTTNG_LOGLEVEL_LOG4J_WARN;
200 } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) {
201 return LTTNG_LOGLEVEL_LOG4J_INFO;
202 } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) {
203 return LTTNG_LOGLEVEL_LOG4J_DEBUG;
204 } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) {
205 return LTTNG_LOGLEVEL_LOG4J_TRACE;
206 } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) {
207 return LTTNG_LOGLEVEL_LOG4J_ALL;
208 } else {
209 return -1;
210 }
211}
212
b2064f54
DG		 213/*
214 * Maps JUL loglevel from string to value
215 */
216static int loglevel_jul_str_to_value(const char *inputstr)
217{
218 int i = 0;
219 char str[LTTNG_SYMBOL_NAME_LEN];
220
3712b110
JG		 221 if (!inputstr || strlen(inputstr) == 0) {
222 return -1;
223 }
224
b2064f54
DG		 225 /*
226 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
227 * added at the end of the loop so a the upper bound we avoid the overflow.
228 */
229 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
230 str[i] = toupper(inputstr[i]);
231 i++;
232 }
233 str[i] = '\0';
234
235 if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) {
236 return LTTNG_LOGLEVEL_JUL_OFF;
237 } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) {
238 return LTTNG_LOGLEVEL_JUL_SEVERE;
239 } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) {
240 return LTTNG_LOGLEVEL_JUL_WARNING;
241 } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) {
242 return LTTNG_LOGLEVEL_JUL_INFO;
243 } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) {
244 return LTTNG_LOGLEVEL_JUL_CONFIG;
245 } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) {
246 return LTTNG_LOGLEVEL_JUL_FINE;
247 } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) {
248 return LTTNG_LOGLEVEL_JUL_FINER;
249 } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) {
250 return LTTNG_LOGLEVEL_JUL_FINEST;
251 } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) {
252 return LTTNG_LOGLEVEL_JUL_ALL;
253 } else {
254 return -1;
255 }
256}
257
0e115563
DG		 258/*
259 * Maps Python loglevel from string to value
260 */
261static int loglevel_python_str_to_value(const char *inputstr)
262{
263 int i = 0;
264 char str[LTTNG_SYMBOL_NAME_LEN];
265
3712b110
JG		 266 if (!inputstr || strlen(inputstr) == 0) {
267 return -1;
268 }
269
0e115563
DG		 270 /*
271 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
272 * added at the end of the loop so a the upper bound we avoid the overflow.
273 */
274 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
275 str[i] = toupper(inputstr[i]);
276 i++;
277 }
278 str[i] = '\0';
279
280 if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) {
281 return LTTNG_LOGLEVEL_PYTHON_CRITICAL;
282 } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) {
283 return LTTNG_LOGLEVEL_PYTHON_ERROR;
284 } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) {
285 return LTTNG_LOGLEVEL_PYTHON_WARNING;
286 } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) {
287 return LTTNG_LOGLEVEL_PYTHON_INFO;
288 } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) {
289 return LTTNG_LOGLEVEL_PYTHON_DEBUG;
290 } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) {
291 return LTTNG_LOGLEVEL_PYTHON_NOTSET;
292 } else {
293 return -1;
294 }
295}
296
8005f29a 297/*
0c8477c8 298 * Maps loglevel from string to value
8005f29a
MD		 299 */
300static
46839cc2 301int loglevel_str_to_value(const char *inputstr)
8005f29a 302{
46839cc2
MD		 303 int i = 0;
304 char str[LTTNG_SYMBOL_NAME_LEN];
305
3712b110
JG		 306 if (!inputstr || strlen(inputstr) == 0) {
307 return -1;
308 }
309
e051e07c
DG		 310 /*
311 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
312 * added at the end of the loop so a the upper bound we avoid the overflow.
313 */
314 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
46839cc2
MD		 315 str[i] = toupper(inputstr[i]);
316 i++;
317 }
318 str[i] = '\0';
319 if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) {
320 return LTTNG_LOGLEVEL_EMERG;
321 } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) {
322 return LTTNG_LOGLEVEL_ALERT;
323 } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) {
324 return LTTNG_LOGLEVEL_CRIT;
325 } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) {
326 return LTTNG_LOGLEVEL_ERR;
327 } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) {
328 return LTTNG_LOGLEVEL_WARNING;
329 } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) {
330 return LTTNG_LOGLEVEL_NOTICE;
331 } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) {
332 return LTTNG_LOGLEVEL_INFO;
333 } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) {
334 return LTTNG_LOGLEVEL_DEBUG_SYSTEM;
335 } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) {
336 return LTTNG_LOGLEVEL_DEBUG_PROGRAM;
337 } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) {
338 return LTTNG_LOGLEVEL_DEBUG_PROCESS;
339 } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) {
340 return LTTNG_LOGLEVEL_DEBUG_MODULE;
341 } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) {
342 return LTTNG_LOGLEVEL_DEBUG_UNIT;
343 } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) {
344 return LTTNG_LOGLEVEL_DEBUG_FUNCTION;
345 } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) {
346 return LTTNG_LOGLEVEL_DEBUG_LINE;
347 } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) {
348 return LTTNG_LOGLEVEL_DEBUG;
8005f29a
MD		 349 } else {
350 return -1;
351 }
352}
353
85076754
MD		 354static
355const char *print_channel_name(const char *name)
356{
357 return name ? : DEFAULT_CHANNEL_NAME;
358}
359
360static
361const char *print_raw_channel_name(const char *name)
362{
363 return name ? : "<default>";
364}
365
89476427
JRJ		 366/*
367 * Mi print exlcusion list
368 */
369static
370int mi_print_exclusion(int count, char **names)
371{
372 int i, ret;
373
374 assert(writer);
375
376 if (count == 0) {
377 ret = 0;
378 goto end;
379 }
380 ret = mi_lttng_writer_open_element(writer, config_element_exclusions);
381 if (ret) {
382 goto end;
383 }
384
385 for (i = 0; i < count; i++) {
386 ret = mi_lttng_writer_write_element_string(writer,
387 config_element_exclusion, names[i]);
388 if (ret) {
389 goto end;
390 }
391 }
392
393 /* Close exclusions element */
394 ret = mi_lttng_writer_close_element(writer);
395
396end:
397 return ret;
398}
399
9c48cab3
JI		 400/*
401 * Return allocated string for pretty-printing exclusion names.
402 */
403static
404char *print_exclusions(int count, char **names)
405{
406 int length = 0;
407 int i;
408 const char *preamble = " excluding ";
409 char *ret;
410
411 if (count == 0) {
412 return strdup("");
413 }
414
415 /* calculate total required length */
416 for (i = 0; i < count; i++) {
417 length += strlen(names[i]) + 1;
418 }
419
420 /* add length of preamble + one for NUL - one for last (missing) comma */
421 length += strlen(preamble);
fd591b18
MD		 422 ret = zmalloc(length);
423 if (!ret) {
424 return NULL;
425 }
9c48cab3
JI		 426 strncpy(ret, preamble, length);
427 for (i = 0; i < count; i++) {
428 strcat(ret, names[i]);
429 if (i != count - 1) {
430 strcat(ret, ",");
431 }
432 }
89476427 433
9c48cab3
JI		 434 return ret;
435}
436
748bde76
JI		 437/*
438 * Compare list of exclusions against an event name.
439 * Return a list of legal exclusion names.
440 * Produce an error or a warning about others (depending on the situation)
441 */
442static
443int check_exclusion_subsets(const char *event_name,
444 const char *exclusions,
445 int *exclusion_count_ptr,
446 char ***exclusion_list_ptr)
447{
448 const char *excluder_ptr;
449 const char *event_ptr;
450 const char *next_excluder;
451 int excluder_length;
452 int exclusion_count = 0;
453 char **exclusion_list = NULL;
454 int ret = CMD_SUCCESS;
455
456 if (event_name[strlen(event_name) - 1] != '*') {
457 ERR("Event %s: Excluders can only be used with wildcarded events", event_name);
458 goto error;
459 }
460
461 next_excluder = exclusions;
462 while (*next_excluder != 0) {
463 event_ptr = event_name;
464 excluder_ptr = next_excluder;
465 excluder_length = strcspn(next_excluder, ",");
466
467 /* Scan both the excluder and the event letter by letter */
468 while (1) {
469 char e, x;
470
471 e = *event_ptr;
472 x = *excluder_ptr;
473
474 if (x == '*') {
475 /* Event is a subset of the excluder */
476 ERR("Event %s: %.*s excludes all events from %s",
477 event_name,
478 excluder_length,
479 next_excluder,
480 event_name);
481 goto error;
482 }
483 if (e == '*') {
5ef79758
MD		 484 char *string;
485 char **new_exclusion_list;
486
748bde76 487 /* Excluder is a proper subset of event */
f5436bfc 488 string = lttng_strndup(next_excluder, excluder_length);
5ef79758 489 if (!string) {
f5436bfc 490 PERROR("lttng_strndup error");
5ef79758
MD		 491 goto error;
492 }
493 new_exclusion_list = realloc(exclusion_list,
1940b29e 494 sizeof(char *) * (exclusion_count + 1));
5ef79758
MD		 495 if (!new_exclusion_list) {
496 PERROR("realloc");
497 free(string);
498 goto error;
499 }
500 exclusion_list = new_exclusion_list;
748bde76 501 exclusion_count++;
5ef79758 502 exclusion_list[exclusion_count - 1] = string;
748bde76
JI		 503 break;
504 }
505 if (x != e) {
506 /* Excluder and event sets have no common elements */
507 WARN("Event %s: %.*s does not exclude any events from %s",
508 event_name,
509 excluder_length,
510 next_excluder,
511 event_name);
512 break;
513 }
514 excluder_ptr++;
515 event_ptr++;
516 }
517 /* next excluder */
518 next_excluder += excluder_length;
519 if (*next_excluder == ',') {
520 next_excluder++;
521 }
522 }
523 goto end;
524error:
525 while (exclusion_count--) {
526 free(exclusion_list[exclusion_count]);
527 }
528 if (exclusion_list != NULL) {
529 free(exclusion_list);
530 }
531 exclusion_list = NULL;
532 exclusion_count = 0;
533 ret = CMD_ERROR;
534end:
535 *exclusion_count_ptr = exclusion_count;
536 *exclusion_list_ptr = exclusion_list;
537 return ret;
538}
502bbe89
PP		 539
540static void warn_on_truncated_exclusion_names(char **exclusion_list,
541 int exclusion_count, int *warn)
542{
543 size_t i = 0;
544
545 for (i = 0; i < exclusion_count; ++i) {
546 const char *name = exclusion_list[i];
547 size_t len = strlen(name);
548
549 if (len >= LTTNG_SYMBOL_NAME_LEN) {
550 WARN("Event exclusion \"%s\" will be truncated",
551 name);
552 *warn = 1;
553 }
554 }
555}
556
f3ed775e 557/*
6181537c 558 * Enabling event using the lttng API.
89476427 559 * Note: in case of error only the last error code will be return.
f3ed775e 560 */
cd80958d 561static int enable_events(char *session_name)
f3ed775e 562{
89476427
JRJ		 563 int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
564 int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1;
b73d0b29 565 char *event_name, *channel_name = NULL;
f3ed775e 566 struct lttng_event ev;
7d29a247 567 struct lttng_domain dom;
7ed70bc9
JI		 568 int exclusion_count = 0;
569 char **exclusion_list = NULL;
f3ed775e 570
441c16a7
MD		 571 memset(&ev, 0, sizeof(ev));
572 memset(&dom, 0, sizeof(dom));
573
53a80697 574 if (opt_kernel) {
67b58630
JG		 575 if (opt_loglevel) {
576 WARN("Kernel loglevels are not supported.");
577 }
53a80697
MD		 578 }
579
7d29a247
DG		 580 /* Create lttng domain */
581 if (opt_kernel) {
582 dom.type = LTTNG_DOMAIN_KERNEL;
7972aab2 583 dom.buf_type = LTTNG_BUFFER_GLOBAL;
d78d6610 584 } else if (opt_userspace) {
2bdd86d4 585 dom.type = LTTNG_DOMAIN_UST;
7972aab2 586 /* Default. */
8692d4e5 587 dom.buf_type = LTTNG_BUFFER_PER_UID;
b9dfb167
DG		 588 } else if (opt_jul) {
589 dom.type = LTTNG_DOMAIN_JUL;
590 /* Default. */
591 dom.buf_type = LTTNG_BUFFER_PER_UID;
5cdb6027
DG		 592 } else if (opt_log4j) {
593 dom.type = LTTNG_DOMAIN_LOG4J;
594 /* Default. */
595 dom.buf_type = LTTNG_BUFFER_PER_UID;
0e115563
DG		 596 } else if (opt_python) {
597 dom.type = LTTNG_DOMAIN_PYTHON;
598 /* Default. */
599 dom.buf_type = LTTNG_BUFFER_PER_UID;
6181537c 600 } else {
3ecec76a
PP		 601 /* Checked by the caller. */
602 assert(0);
2bdd86d4 603 }
7d29a247 604
8b08c525
AB		 605 if (opt_exclude) {
606 switch (dom.type) {
607 case LTTNG_DOMAIN_KERNEL:
608 case LTTNG_DOMAIN_JUL:
609 case LTTNG_DOMAIN_LOG4J:
610 case LTTNG_DOMAIN_PYTHON:
611 ERR("Event name exclusions are not yet implemented for %s events",
612 get_domain_str(dom.type));
613 ret = CMD_ERROR;
614 goto error;
615 case LTTNG_DOMAIN_UST:
616 /* Exclusions supported */
617 break;
618 default:
619 assert(0);
620 }
d5dd17fd
JI		 621 }
622
85076754 623 channel_name = opt_channel_name;
ae856491 624
cd80958d
DG		 625 handle = lttng_create_handle(session_name, &dom);
626 if (handle == NULL) {
627 ret = -1;
628 goto error;
629 }
1aef21b6 630
89476427
JRJ		 631 /* Prepare Mi */
632 if (lttng_opt_mi) {
633 /* Open a events element */
634 ret = mi_lttng_writer_open_element(writer, config_element_events);
635 if (ret) {
636 ret = CMD_ERROR;
637 goto error;
638 }
639 }
640
cd80958d 641 if (opt_enable_all) {
8c9ae521 642 /* Default setup for enable all */
75e8c5ab
MD		 643 if (opt_kernel) {
644 ev.type = opt_event_type;
29c62722 645 strcpy(ev.name, "*");
300b8fd5
MD		 646 /* kernel loglevels not implemented */
647 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
75e8c5ab
MD		 648 } else {
649 ev.type = LTTNG_EVENT_TRACEPOINT;
650 strcpy(ev.name, "*");
300b8fd5
MD		 651 ev.loglevel_type = opt_loglevel_type;
652 if (opt_loglevel) {
0e115563 653 assert(opt_userspace || opt_jul || opt_log4j || opt_python);
b2064f54
DG		 654 if (opt_userspace) {
655 ev.loglevel = loglevel_str_to_value(opt_loglevel);
656 } else if (opt_jul) {
657 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
5cdb6027
DG		 658 } else if (opt_log4j) {
659 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
0e115563
DG		 660 } else if (opt_python) {
661 ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
b2064f54 662 }
300b8fd5
MD		 663 if (ev.loglevel == -1) {
664 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 665 ret = -LTTNG_ERR_INVALID;
300b8fd5
MD		 666 goto error;
667 }
22e25b71 668 } else {
0e115563 669 assert(opt_userspace || opt_jul || opt_log4j || opt_python);
b2064f54
DG		 670 if (opt_userspace) {
671 ev.loglevel = -1;
34aa3685 672 } else if (opt_jul) {
b2064f54 673 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
34aa3685
JG		 674 } else if (opt_log4j) {
675 ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
0e115563
DG		 676 } else if (opt_python) {
677 ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
b2064f54 678 }
300b8fd5 679 }
75e8c5ab 680 }
8c9ae521 681
7ed70bc9
JI		 682 if (opt_exclude) {
683 ret = check_exclusion_subsets("*", opt_exclude,
684 &exclusion_count, &exclusion_list);
685 if (ret == CMD_ERROR) {
686 goto error;
687 }
89476427 688 ev.exclusion = 1;
502bbe89
PP		 689
690 warn_on_truncated_exclusion_names(exclusion_list,
691 exclusion_count, &warn);
7ed70bc9 692 }
025faf73 693 if (!opt_filter) {
7ed70bc9
JI		 694 ret = lttng_enable_event_with_exclusions(handle,
695 &ev, channel_name,
696 NULL,
697 exclusion_count, exclusion_list);
025faf73
DG		 698 if (ret < 0) {
699 switch (-ret) {
700 case LTTNG_ERR_KERN_EVENT_EXIST:
701 WARN("Kernel events already enabled (channel %s, session %s)",
85076754 702 print_channel_name(channel_name), session_name);
89476427 703 warn = 1;
025faf73 704 break;
45d5d421
CB		 705 case LTTNG_ERR_TRACE_ALREADY_STARTED:
706 {
707 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
721b94fe 708 ERR("Events: %s (domain %s, channel %s, session %s)",
45d5d421 709 msg,
721b94fe 710 get_domain_str(dom.type),
45d5d421
CB		 711 print_channel_name(channel_name),
712 session_name);
713 error = 1;
714 break;
715 }
025faf73 716 default:
721b94fe 717 ERR("Events: %s (domain %s, channel %s, session %s)",
85076754 718 lttng_strerror(ret),
721b94fe 719 get_domain_str(dom.type),
85076754
MD		 720 ret == -LTTNG_ERR_NEED_CHANNEL_NAME
721 ? print_raw_channel_name(channel_name)
722 : print_channel_name(channel_name),
723 session_name);
89476427 724 error = 1;
025faf73
DG		 725 break;
726 }
727 goto end;
42224349 728 }
8c9ae521 729
025faf73
DG		 730 switch (opt_event_type) {
731 case LTTNG_EVENT_TRACEPOINT:
67b58630 732 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9c48cab3 733 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 734
735 if (!exclusion_string) {
736 PERROR("Cannot allocate exclusion_string");
737 error = 1;
738 goto end;
739 }
9c48cab3 740 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
b9dfb167 741 get_domain_str(dom.type),
9c48cab3 742 exclusion_string,
85076754 743 print_channel_name(channel_name),
025faf73 744 opt_loglevel);
9c48cab3 745 free(exclusion_string);
025faf73 746 } else {
9c48cab3 747 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 748
749 if (!exclusion_string) {
750 PERROR("Cannot allocate exclusion_string");
751 error = 1;
752 goto end;
753 }
9c48cab3 754 MSG("All %s tracepoints%s are enabled in channel %s",
b9dfb167 755 get_domain_str(dom.type),
9c48cab3 756 exclusion_string,
85076754 757 print_channel_name(channel_name));
9c48cab3 758 free(exclusion_string);
025faf73
DG		 759 }
760 break;
761 case LTTNG_EVENT_SYSCALL:
762 if (opt_kernel) {
6e911cad
MD		 763 MSG("All %s system calls are enabled in channel %s",
764 get_domain_str(dom.type),
85076754 765 print_channel_name(channel_name));
025faf73
DG		 766 }
767 break;
768 case LTTNG_EVENT_ALL:
67b58630 769 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9c48cab3 770 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 771
772 if (!exclusion_string) {
773 PERROR("Cannot allocate exclusion_string");
774 error = 1;
775 goto end;
776 }
9c48cab3 777 MSG("All %s events%s are enabled in channel %s for loglevel %s",
b9dfb167 778 get_domain_str(dom.type),
9c48cab3 779 exclusion_string,
85076754 780 print_channel_name(channel_name),
025faf73 781 opt_loglevel);
9c48cab3 782 free(exclusion_string);
025faf73 783 } else {
9c48cab3 784 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 785
786 if (!exclusion_string) {
787 PERROR("Cannot allocate exclusion_string");
788 error = 1;
789 goto end;
790 }
9c48cab3 791 MSG("All %s events%s are enabled in channel %s",
b9dfb167 792 get_domain_str(dom.type),
9c48cab3 793 exclusion_string,
85076754 794 print_channel_name(channel_name));
9c48cab3 795 free(exclusion_string);
025faf73
DG		 796 }
797 break;
798 default:
799 /*
800 * We should not be here since lttng_enable_event should have
801 * failed on the event type.
802 */
803 goto error;
57064ada 804 }
f3ed775e 805 }
89476427 806
025faf73 807 if (opt_filter) {
89476427 808 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
7ed70bc9 809 opt_filter, exclusion_count, exclusion_list);
89476427
JRJ		 810 if (command_ret < 0) {
811 switch (-command_ret) {
16363652 812 case LTTNG_ERR_FILTER_EXIST:
85076754 813 WARN("Filter on all events is already enabled"
721b94fe
JR		 814 " (domain %s, channel %s, session %s)",
815 get_domain_str(dom.type),
85076754 816 print_channel_name(channel_name), session_name);
89476427 817 warn = 1;
16363652 818 break;
45d5d421
CB		 819 case LTTNG_ERR_TRACE_ALREADY_STARTED:
820 {
821 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
721b94fe 822 ERR("All events: %s (domain %s, channel %s, session %s, filter \'%s\')",
45d5d421 823 msg,
721b94fe 824 get_domain_str(dom.type),
45d5d421
CB		 825 print_channel_name(channel_name),
826 session_name, opt_filter);
827 error = 1;
828 break;
829 }
16363652 830 default:
721b94fe 831 ERR("All events: %s (domain %s, channel %s, session %s, filter \'%s\')",
da3d7d0e 832 lttng_strerror(command_ret),
721b94fe 833 get_domain_str(dom.type),
da3d7d0e 834 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 835 ? print_raw_channel_name(channel_name)
836 : print_channel_name(channel_name),
837 session_name, opt_filter);
89476427 838 error = 1;
16363652
DG		 839 break;
840 }
89476427 841 error_holder = command_ret;
16363652 842 } else {
89476427 843 ev.filter = 1;
16363652
DG		 844 MSG("Filter '%s' successfully set", opt_filter);
845 }
846 }
89476427
JRJ		 847
848 if (lttng_opt_mi) {
849 /* The wildcard * is used for kernel and ust domain to
850 * represent ALL. We copy * in event name to force the wildcard use
851 * for kernel domain
852 *
853 * Note: this is strictly for semantic and printing while in
854 * machine interface mode.
855 */
856 strcpy(ev.name, "*");
857
858 /* If we reach here the events are enabled */
859 if (!error && !warn) {
860 ev.enabled = 1;
861 } else {
862 ev.enabled = 0;
863 success = 0;
864 }
970d848b 865 ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
89476427
JRJ		 866 if (ret) {
867 ret = CMD_ERROR;
868 goto error;
869 }
870
871 /* print exclusion */
872 ret = mi_print_exclusion(exclusion_count, exclusion_list);
873 if (ret) {
874 ret = CMD_ERROR;
875 goto error;
876 }
877
878 /* Success ? */
879 ret = mi_lttng_writer_write_element_bool(writer,
880 mi_lttng_element_command_success, success);
881 if (ret) {
882 ret = CMD_ERROR;
883 goto error;
884 }
885
886 /* Close event element */
887 ret = mi_lttng_writer_close_element(writer);
888 if (ret) {
889 ret = CMD_ERROR;
890 goto error;
891 }
892 }
893
8c9ae521 894 goto end;
f3ed775e
DG		 895 }
896
897 /* Strip event list */
898 event_name = strtok(opt_event_list, ",");
899 while (event_name != NULL) {
6181537c
DG		 900 /* Copy name and type of the event */
901 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
902 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
903 ev.type = opt_event_type;
904
f3ed775e
DG		 905 /* Kernel tracer action */
906 if (opt_kernel) {
907 DBG("Enabling kernel event %s for channel %s",
85076754
MD		 908 event_name,
909 print_channel_name(channel_name));
f3ed775e
DG		 910
911 switch (opt_event_type) {
29c62722
MD		 912 case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */
913 /* If event name differs from *, select tracepoint. */
914 if (strcmp(ev.name, "*")) {
915 ev.type = LTTNG_EVENT_TRACEPOINT;
916 }
917 break;
e6ddca71 918 case LTTNG_EVENT_TRACEPOINT:
f3ed775e 919 break;
7d29a247 920 case LTTNG_EVENT_PROBE:
cf0e5467 921 ret = parse_probe_opts(&ev, opt_probe);
49d4e302 922 if (ret) {
cf0e5467 923 ERR("Unable to parse probe options");
0d63dd19
DG		 924 ret = 0;
925 goto error;
926 }
f3ed775e
DG		 927 break;
928 case LTTNG_EVENT_FUNCTION:
8f0d098b 929 ret = parse_probe_opts(&ev, opt_function);
49d4e302 930 if (ret) {
8f0d098b
MD		 931 ERR("Unable to parse function probe options");
932 ret = 0;
933 goto error;
934 }
935 break;
a54bd42d 936 case LTTNG_EVENT_SYSCALL:
c6aa2d41
MD		 937 ev.type = LTTNG_EVENT_SYSCALL;
938 break;
f3ed775e 939 default:
1ab1ea0b 940 ret = CMD_UNDEFINED;
f3ed775e
DG		 941 goto error;
942 }
0cda4f28 943
0cda4f28 944 /* kernel loglevels not implemented */
8005f29a 945 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
f3ed775e 946 } else if (opt_userspace) { /* User-space tracer action */
300b8fd5 947 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name,
85076754 948 print_channel_name(channel_name), opt_loglevel ? : "<all>");
2bdd86d4
MD		 949
950 switch (opt_event_type) {
951 case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */
2bdd86d4
MD		 952 /* Fall-through */
953 case LTTNG_EVENT_TRACEPOINT:
e4baff1e
MD		 954 /* Copy name and type of the event */
955 ev.type = LTTNG_EVENT_TRACEPOINT;
956 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
957 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
2bdd86d4
MD		 958 break;
959 case LTTNG_EVENT_PROBE:
960 case LTTNG_EVENT_FUNCTION:
2bdd86d4
MD		 961 case LTTNG_EVENT_SYSCALL:
962 default:
cc62c0c0 963 ERR("Event type not available for user-space tracing");
4ce78777 964 ret = CMD_UNSUPPORTED;
2bdd86d4
MD		 965 goto error;
966 }
0cda4f28 967
7ed70bc9 968 if (opt_exclude) {
89476427 969 ev.exclusion = 1;
d5dd17fd
JI		 970 if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) {
971 ERR("Exclusion option can only be used with tracepoint events");
972 ret = CMD_ERROR;
973 goto error;
974 }
7ed70bc9
JI		 975 /* Free previously allocated items */
976 if (exclusion_list != NULL) {
977 while (exclusion_count--) {
978 free(exclusion_list[exclusion_count]);
979 }
980 free(exclusion_list);
981 exclusion_list = NULL;
982 }
983 /* Check for proper subsets */
984 ret = check_exclusion_subsets(event_name, opt_exclude,
985 &exclusion_count, &exclusion_list);
986 if (ret == CMD_ERROR) {
987 goto error;
988 }
502bbe89
PP		 989
990 warn_on_truncated_exclusion_names(
991 exclusion_list, exclusion_count, &warn);
7ed70bc9
JI		 992 }
993
0cda4f28 994 ev.loglevel_type = opt_loglevel_type;
ed7f4083 995 if (opt_loglevel) {
8005f29a
MD		 996 ev.loglevel = loglevel_str_to_value(opt_loglevel);
997 if (ev.loglevel == -1) {
998 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 999 ret = -LTTNG_ERR_INVALID;
8005f29a
MD		 1000 goto error;
1001 }
22e25b71
MD		 1002 } else {
1003 ev.loglevel = -1;
ed7f4083 1004 }
0e115563 1005 } else if (opt_jul || opt_log4j || opt_python) {
b9dfb167
DG		 1006 if (opt_event_type != LTTNG_EVENT_ALL &&
1007 opt_event_type != LTTNG_EVENT_TRACEPOINT) {
5cdb6027 1008 ERR("Event type not supported for domain.");
b9dfb167
DG		 1009 ret = CMD_UNSUPPORTED;
1010 goto error;
1011 }
b2064f54
DG		 1012
1013 ev.loglevel_type = opt_loglevel_type;
1014 if (opt_loglevel) {
5cdb6027
DG		 1015 if (opt_jul) {
1016 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
1017 } else if (opt_log4j) {
1018 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
0e115563
DG		 1019 } else if (opt_python) {
1020 ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
5cdb6027 1021 }
b2064f54
DG		 1022 if (ev.loglevel == -1) {
1023 ERR("Unknown loglevel %s", opt_loglevel);
1024 ret = -LTTNG_ERR_INVALID;
1025 goto error;
1026 }
1027 } else {
5cdb6027
DG		 1028 if (opt_jul) {
1029 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
1030 } else if (opt_log4j) {
1031 ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
0e115563
DG		 1032 } else if (opt_python) {
1033 ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
5cdb6027 1034 }
b2064f54 1035 }
b9dfb167
DG		 1036 ev.type = LTTNG_EVENT_TRACEPOINT;
1037 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
1038 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
f3ed775e 1039 } else {
3ecec76a 1040 assert(0);
f3ed775e
DG		 1041 }
1042
025faf73 1043 if (!opt_filter) {
9c48cab3
JI		 1044 char *exclusion_string;
1045
89476427 1046 command_ret = lttng_enable_event_with_exclusions(handle,
7ed70bc9
JI		 1047 &ev, channel_name,
1048 NULL, exclusion_count, exclusion_list);
9c48cab3 1049 exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 1050 if (!exclusion_string) {
1051 PERROR("Cannot allocate exclusion_string");
1052 error = 1;
1053 goto end;
1054 }
89476427 1055 if (command_ret < 0) {
025faf73 1056 /* Turn ret to positive value to handle the positive error code */
89476427 1057 switch (-command_ret) {
025faf73 1058 case LTTNG_ERR_KERN_EVENT_EXIST:
9c48cab3 1059 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
85076754 1060 event_name,
9c48cab3 1061 exclusion_string,
85076754 1062 print_channel_name(channel_name), session_name);
89476427 1063 warn = 1;
025faf73 1064 break;
45d5d421
CB		 1065 case LTTNG_ERR_TRACE_ALREADY_STARTED:
1066 {
1067 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
721b94fe 1068 ERR("Event %s%s: %s (domain %s,channel %s, session %s)", event_name,
45d5d421
CB		 1069 exclusion_string,
1070 msg,
721b94fe 1071 get_domain_str(dom.type),
45d5d421
CB		 1072 print_channel_name(channel_name),
1073 session_name);
1074 error = 1;
1075 break;
1076 }
025faf73 1077 default:
721b94fe 1078 ERR("Event %s%s: %s (domain %s, channel %s, session %s)", event_name,
9c48cab3 1079 exclusion_string,
da3d7d0e 1080 lttng_strerror(command_ret),
721b94fe 1081 get_domain_str(dom.type),
da3d7d0e 1082 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1083 ? print_raw_channel_name(channel_name)
1084 : print_channel_name(channel_name),
1085 session_name);
89476427 1086 error = 1;
025faf73
DG		 1087 break;
1088 }
89476427 1089 error_holder = command_ret;
025faf73 1090 } else {
8274eeba
AB		 1091 switch (dom.type) {
1092 case LTTNG_DOMAIN_KERNEL:
1093 case LTTNG_DOMAIN_UST:
49ceaa70 1094 MSG("%s event %s%s created in channel %s",
8274eeba
AB		 1095 get_domain_str(dom.type),
1096 event_name,
1097 exclusion_string,
1098 print_channel_name(channel_name));
1099 break;
1100 case LTTNG_DOMAIN_JUL:
1101 case LTTNG_DOMAIN_LOG4J:
1102 case LTTNG_DOMAIN_PYTHON:
1103 /*
1104 * Don't print the default channel
1105 * name for agent domains.
1106 */
895707da 1107 MSG("%s event %s%s enabled",
8274eeba
AB		 1108 get_domain_str(dom.type),
1109 event_name,
1110 exclusion_string);
1111 break;
1112 default:
1113 assert(0);
49ceaa70 1114 }
42224349 1115 }
9c48cab3 1116 free(exclusion_string);
6181537c 1117 }
025faf73
DG		 1118
1119 if (opt_filter) {
9c48cab3
JI		 1120 char *exclusion_string;
1121
89476427
JRJ		 1122 /* Filter present */
1123 ev.filter = 1;
1124
1125 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
7ed70bc9 1126 opt_filter, exclusion_count, exclusion_list);
9c48cab3 1127 exclusion_string = print_exclusions(exclusion_count, exclusion_list);
5ef79758
MD		 1128 if (!exclusion_string) {
1129 PERROR("Cannot allocate exclusion_string");
1130 error = 1;
1131 goto end;
1132 }
89476427
JRJ		 1133 if (command_ret < 0) {
1134 switch (-command_ret) {
7671f53c 1135 case LTTNG_ERR_FILTER_EXIST:
9c48cab3 1136 WARN("Filter on event %s%s is already enabled"
721b94fe 1137 " (domain %s, channel %s, session %s)",
85076754 1138 event_name,
9c48cab3 1139 exclusion_string,
721b94fe 1140 get_domain_str(dom.type),
85076754 1141 print_channel_name(channel_name), session_name);
89476427 1142 warn = 1;
7671f53c 1143 break;
45d5d421
CB		 1144 case LTTNG_ERR_TRACE_ALREADY_STARTED:
1145 {
1146 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
721b94fe 1147 ERR("Event %s%s: %s (domain %s, channel %s, session %s, filter \'%s\')", ev.name,
45d5d421
CB		 1148 exclusion_string,
1149 msg,
721b94fe 1150 get_domain_str(dom.type),
45d5d421
CB		 1151 print_channel_name(channel_name),
1152 session_name, opt_filter);
1153 error = 1;
1154 break;
1155 }
7671f53c 1156 default:
721b94fe 1157 ERR("Event %s%s: %s (domain %s, channel %s, session %s, filter \'%s\')", ev.name,
9c48cab3 1158 exclusion_string,
da3d7d0e 1159 lttng_strerror(command_ret),
721b94fe 1160 get_domain_str(dom.type),
da3d7d0e 1161 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1162 ? print_raw_channel_name(channel_name)
1163 : print_channel_name(channel_name),
1164 session_name, opt_filter);
89476427 1165 error = 1;
7671f53c
CB		 1166 break;
1167 }
89476427
JRJ		 1168 error_holder = command_ret;
1169
16363652 1170 } else {
721b94fe 1171 MSG("Event %s%s: Filter '%s' for domain %s successfully set",
9c48cab3 1172 event_name, exclusion_string,
721b94fe
JR		 1173 opt_filter,
1174 get_domain_str(dom.type));
53a80697 1175 }
9c48cab3 1176 free(exclusion_string);
53a80697 1177 }
6181537c 1178
89476427
JRJ		 1179 if (lttng_opt_mi) {
1180 if (command_ret) {
1181 success = 0;
1182 ev.enabled = 0;
1183 } else {
1184 ev.enabled = 1;
1185 }
1186
970d848b 1187 ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
89476427
JRJ		 1188 if (ret) {
1189 ret = CMD_ERROR;
1190 goto error;
1191 }
1192
1193 /* print exclusion */
1194 ret = mi_print_exclusion(exclusion_count, exclusion_list);
1195 if (ret) {
1196 ret = CMD_ERROR;
1197 goto error;
1198 }
1199
1200 /* Success ? */
1201 ret = mi_lttng_writer_write_element_bool(writer,
1202 mi_lttng_element_command_success, success);
1203 if (ret) {
1204 ret = CMD_ERROR;
1205 goto end;
1206 }
1207
1208 /* Close event element */
1209 ret = mi_lttng_writer_close_element(writer);
1210 if (ret) {
1211 ret = CMD_ERROR;
1212 goto end;
1213 }
1214 }
1215
f3ed775e
DG		 1216 /* Next event */
1217 event_name = strtok(NULL, ",");
89476427
JRJ		 1218 /* Reset warn, error and success */
1219 success = 1;
f3ed775e
DG		 1220 }
1221
8c9ae521 1222end:
89476427
JRJ		 1223 /* Close Mi */
1224 if (lttng_opt_mi) {
1225 /* Close events element */
1226 ret = mi_lttng_writer_close_element(writer);
1227 if (ret) {
1228 ret = CMD_ERROR;
1229 goto error;
1230 }
1231 }
f3ed775e 1232error:
ae856491
DG		 1233 if (warn) {
1234 ret = CMD_WARNING;
1235 }
89476427
JRJ		 1236 if (error) {
1237 ret = CMD_ERROR;
1238 }
cd80958d
DG		 1239 lttng_destroy_handle(handle);
1240
7ed70bc9
JI		 1241 if (exclusion_list != NULL) {
1242 while (exclusion_count--) {
1243 free(exclusion_list[exclusion_count]);
1244 }
1245 free(exclusion_list);
1246 }
1247
89476427
JRJ		 1248 /* Overwrite ret with error_holder if there was an actual error with
1249 * enabling an event.
1250 */
1251 ret = error_holder ? error_holder : ret;
1252
f3ed775e
DG		 1253 return ret;
1254}
1255
1256/*
6181537c 1257 * Add event to trace session
f3ed775e 1258 */
721b94fe
JR		 1259
1260struct args_tuple {
1261 int argv_index_start;
1262 int argv_index_end;
1263};
1264
1265struct domain_configuration {
1266 int enable_all;
1267 int event_type;
1268 char *event_list;
1269 char *loglevel;
1270 int loglevel_type;
1271 enum lttng_domain_type domain_type;
1272 char *probe;
1273 char *function;
1274 char *channel_name;
1275 char *filter;
1276 char *exclude;
1277};
1278
1279static struct domain_configuration *initialize_domain_configuration(enum lttng_domain_type type)
f3ed775e 1280{
f3ed775e 1281
721b94fe 1282 struct domain_configuration *config = malloc(sizeof(struct domain_configuration));
f3ed775e 1283
721b94fe
JR		 1284 if (!config) {
1285 goto end;
1286 }
f3ed775e 1287
721b94fe
JR		 1288 switch(type) {
1289 case LTTNG_DOMAIN_KERNEL:
1290 config->domain_type = LTTNG_DOMAIN_KERNEL;
eeac7d46 1291 break;
721b94fe
JR		 1292 case LTTNG_DOMAIN_UST:
1293 config->domain_type = LTTNG_DOMAIN_UST;
0cda4f28 1294 break;
721b94fe
JR		 1295 case LTTNG_DOMAIN_JUL:
1296 config->domain_type = LTTNG_DOMAIN_JUL;
13dce3b7 1297 break;
721b94fe
JR		 1298 case LTTNG_DOMAIN_LOG4J:
1299 config->domain_type = LTTNG_DOMAIN_LOG4J;
53a80697 1300 break;
721b94fe
JR		 1301 case LTTNG_DOMAIN_PYTHON:
1302 config->domain_type = LTTNG_DOMAIN_PYTHON;
fac3366c 1303 break;
721b94fe 1304 case LTTNG_DOMAIN_NONE:
f3ed775e 1305 default:
721b94fe
JR		 1306 free(config);
1307 config=NULL;
f3ed775e 1308 goto end;
721b94fe
JR		 1309 };
1310
1311 config->event_type = LTTNG_EVENT_ALL ;
1312 config->enable_all = 0;
1313 config->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
1314 config->loglevel = NULL;
1315 config->probe = NULL;
1316 config->function = NULL;
1317 config->channel_name = NULL;
1318 config->filter = NULL;
1319 config->exclude = NULL;
1320 config->event_list = NULL;
1321end:
1322 return config;
1323}
de044b7a 1324
721b94fe
JR		 1325int cmd_enable_events(int argc, const char **argv)
1326{
1327 int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
1328 static poptContext pc;
1329 char *session_name = NULL;
1330 int event_type = -1;
f3ed775e 1331
721b94fe
JR		 1332 struct domain_configuration *userspace_config = NULL;
1333 struct domain_configuration *kernel_config = NULL;
1334 struct domain_configuration *jul_config = NULL;
1335 struct domain_configuration *log4j_config = NULL;
1336 struct domain_configuration *python_config = NULL;
1337 struct domain_configuration *domain_configuration[5] = { userspace_config, kernel_config, jul_config, log4j_config, python_config}
3ecec76a 1338
89476427
JRJ		 1339 /* Mi check */
1340 if (lttng_opt_mi) {
1341 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
1342 if (!writer) {
1343 ret = -LTTNG_ERR_NOMEM;
1344 goto end;
1345 }
1346
1347 /* Open command element */
1348 ret = mi_lttng_writer_command_open(writer,
1349 mi_lttng_element_command_enable_event);
1350 if (ret) {
1351 ret = CMD_ERROR;
1352 goto end;
1353 }
1354
1355 /* Open output element */
1356 ret = mi_lttng_writer_open_element(writer,
1357 mi_lttng_element_command_output);
1358 if (ret) {
1359 ret = CMD_ERROR;
1360 goto end;
1361 }
1362 }
1363
721b94fe
JR		 1364 /* Parse global arguments */
1365 pc = poptGetContext(NULL, argc, argv, global_long_options, 0);
1366 poptReadDefaultConfig(pc, 0);
1367
1368
1369 while ((opt = poptGetNextOpt(pc)) != -1) {
1370 switch (opt) {
1371 case OPT_HELP:
1372 SHOW_HELP();
1373 goto end;
1374 case OPT_LIST_OPTIONS:
1375 list_cmd_options(stdout, long_options);
1376 goto end;
1377 default:
1378 break;
1379 }
f3ed775e
DG		 1380 }
1381
721b94fe
JR		 1382 /* Dispose the global arguments context */
1383 poptFreeContext(pc);
1384 pc = NULL;
1385
1386 /* Find the number of domain based on the passed arguments */
1387 int i;
1388 int args_tuple_count = 0;
1389 int arg_state_looking_for_end = 0;
1390 struct args_tuple *args_tuple_list = NULL;
1391 for (i = 1; i < argc ; i++) {
1392
1393 if (strcmp("-u", argv[i]) && strcmp("--userspace", argv[i]) &&
1394 strcmp("-j", argv[i]) && strcmp("--jul", argv[i]) &&
1395 strcmp("-l", argv[i]) && strcmp("--log4j", argv[i]) &&
1396 strcmp("-p", argv[i]) && strcmp("--python", argv[i]) &&
1397 strcmp("-k", argv[i]) && strcmp("--kernel", argv[i])) {
1398 continue;
1399 }
1400
1401
1402 struct args_tuple *tmp_pointer = NULL;
1403 args_tuple_count++;
1404 tmp_pointer = realloc(args_tuple_list, sizeof(struct args_tuple) * args_tuple_count);
1405 if (!tmp_pointer) {
1406 ERR("Realoc of args tuple failed");
1407 ret = CMD_ERROR;
1408 goto end;
1409 }
1410 args_tuple_list = tmp_pointer;
1411
1412 if (!arg_state_looking_for_end) {
1413 if (args_tuple_count -1 < 0) {
1414 ERR("Args parsing illegal state");
1415 ret = CMD_ERROR;
1416 goto end;
1417 }
1418 args_tuple_list[args_tuple_count-1].argv_index_start = i;
1419 arg_state_looking_for_end = 1;
1420 } else {
1421 if (args_tuple_count - 2 < 0 || args_tuple_count -1 < 0) {
1422 ERR("Args parsing illegal state");
1423 ret = CMD_ERROR;
1424 goto end;
1425 }
1426
1427 /* Close the previous tuple */
1428 args_tuple_list[args_tuple_count-2].argv_index_end = i - 1;
1429
1430 /* Start the new tuple */
1431 args_tuple_list[args_tuple_count-1].argv_index_start = i;
cd80958d 1432 }
cd80958d
DG		 1433 }
1434
721b94fe
JR		 1435 if (args_tuple_count <= 0) {
1436 ret = print_missing_or_multiple_domains(0);
1437 if (ret) {
1438 ret = CMD_ERROR;
1439 goto end;
1440 }
1441 goto end;
89476427
JRJ		 1442 }
1443
721b94fe
JR		 1444 /* Close the last tuple */
1445 args_tuple_list[args_tuple_count-1].argv_index_end = i - 1;
1446
1447 if (args_tuple_count == 1) {
1448 /* Preserve the old way with a domain flag that can be anywhere */
1449 args_tuple_list[0].argv_index_start = 1;
1450 }
1451
1452 for (i = 0; i < args_tuple_count; i++) {
1453 struct args_tuple *tuple = &args_tuple_list[i];
1454 int cur_argc = tuple->argv_index_end - tuple-> argv_index_start + 1;
1455 const char **cur_argv = &argv[tuple->argv_index_start];
1456
1457 /* Default options */
1458
1459 /* Domain */
1460 opt_domain = LTTNG_DOMAIN_NONE;
1461
1462 /* Event options */
1463 opt_enable_all = 0;
1464 opt_event_type = LTTNG_EVENT_ALL;
1465 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
1466 opt_event_list = NULL;
1467 opt_loglevel = NULL;
1468 opt_probe = NULL;
1469 opt_function = NULL;
1470 opt_channel_name = NULL;
1471 opt_filter = NULL;
1472 opt_exclude = NULL;
1473
1474 pc = poptGetContext(NULL, cur_argc, cur_argv, long_options, POPT_CONTEXT_KEEP_FIRST);
1475 poptReadDefaultConfig(pc, 0);
1476
1477 /* Default event type */
1478 opt_event_type = LTTNG_EVENT_ALL;
1479
1480 while ((opt = poptGetNextOpt(pc)) != -1) {
1481 switch (opt) {
1482 case OPT_HELP:
1483 SHOW_HELP();
1484 goto end;
1485 case OPT_TRACEPOINT:
1486 opt_event_type = LTTNG_EVENT_TRACEPOINT;
1487 break;
1488 case OPT_PROBE:
1489 opt_event_type = LTTNG_EVENT_PROBE;
1490 break;
1491 case OPT_FUNCTION:
1492 opt_event_type = LTTNG_EVENT_FUNCTION;
1493 break;
1494 case OPT_SYSCALL:
1495 opt_event_type = LTTNG_EVENT_SYSCALL;
1496 break;
1497 case OPT_LOGLEVEL:
1498 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE;
1499 opt_loglevel = poptGetOptArg(pc);
1500 break;
1501 case OPT_LOGLEVEL_ONLY:
1502 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE;
1503 opt_loglevel = poptGetOptArg(pc);
1504 break;
1505 case OPT_LIST_OPTIONS:
1506 list_cmd_options(stdout, long_options);
1507 goto end;
1508 case OPT_FILTER:
1509 break;
1510 case OPT_EXCLUDE:
1511 break;
1512 default:
1513 ret = CMD_UNDEFINED;
1514 goto end;
1515 }
1516
1517 /* Validate event type. Multiple event type are not supported. */
1518 if (event_type == -1) {
1519 event_type = opt_event_type;
1520 } else {
1521 if (event_type != opt_event_type) {
1522 ERR("Multiple event type not supported.");
1523 ret = CMD_ERROR;
1524 goto end;
1525 }
1526 }
1527 }
1528
1529 struct domain_configuration *tmp_config = initialize_domain_configuration(opt_domain);
1530
1531 opt_event_list = (char*) poptGetArg(pc);
1532 if (opt_event_list == NULL && opt_enable_all == 0) {
1533 ERR("Missing event name(s).\n");
1534 ret = CMD_ERROR;
1535 goto end;
1536 }
1537
1538 if (!opt_session_name) {
1539 session_name = get_session_name();
1540 if (session_name == NULL) {
1541 command_ret = CMD_ERROR;
1542 success = 0;
1543 goto mi_closing;
1544 }
1545 } else {
1546 session_name = opt_session_name;
1547 }
1548
1549 config->event_type = opt_event_type ;
1550 config->enable_all = opt_enable_all;
1551 config->loglevel_type = opt_loglevel_type;
1552 config->loglevel = opt_loglevel;
1553 config->probe = opt_probe;
1554 config->function = opt_function;
1555 config->channel_name = opt_channel_name;
1556 config->filter = opt_filter;
1557 config->exclude = opt_exclude;
1558 config->event_list = opt_event_list;
1559
1560 switch(opt_domain) {
1561 case LTTNG_DOMAIN_KERNEL:
1562 if (kernel_config) {
1563 ERR("Only one -k option is permitted per command");
1564 ret = CMD_ERROR;
1565 goto end;
1566 }
1567 kernel_config = tmp_config;
1568 break;
1569 case LTTNG_DOMAIN_UST:
1570 if (ust_config) {
1571 ERR("Only one -u option is permitted per command");
1572 ret = CMD_ERROR;
1573 goto end;
1574 }
1575 ust_config = tmp_config;
1576 break;
1577 case LTTNG_DOMAIN_JUL:
1578 if (jul_config) {
1579 ERR("Only one -j option is permitted per command");
1580 ret = CMD_ERROR;
1581 goto end;
1582 }
1583 jul_config = tmp_config;
1584 break;
1585 case LTTNG_DOMAIN_LOG4J:
1586 if (log4j_config) {
1587 ERR("Only one -l option is permitted per command");
1588 ret = CMD_ERROR;
1589 goto end;
1590 }
1591 log4j_config = tmp_config;
1592 break;
1593 case LTTNG_DOMAIN_PYTHON:
1594 if (python_config) {
1595 ERR("Only one -p option is permitted per command");
1596 ret = CMD_ERROR;
1597 goto end;
1598 }
1599 python_config = tmp_config;
1600 break;
1601 case LTTNG_DOMAIN_NONE:
1602 default:
1603 ret = CMD_ERROR;
1604 goto end
1605 };
1606
1607 tmp_config = NULL;
1608
1609 }
1610
1611 command_ret = enable_events_1(session_name, configurations, sizeof(configurations)/sizeof(struct *domain_configuration);
1612 if (command_ret) {
1613 success = 0;
1614 }
1615
89476427
JRJ		 1616mi_closing:
1617 /* Mi closing */
1618 if (lttng_opt_mi) {
1619 /* Close output element */
1620 ret = mi_lttng_writer_close_element(writer);
1621 if (ret) {
1622 ret = CMD_ERROR;
1623 goto end;
1624 }
1625
1626 ret = mi_lttng_writer_write_element_bool(writer,
1627 mi_lttng_element_command_success, success);
1628 if (ret) {
1629 ret = CMD_ERROR;
1630 goto end;
1631 }
1632
1633 /* Command element close */
1634 ret = mi_lttng_writer_command_close(writer);
1635 if (ret) {
1636 ret = CMD_ERROR;
1637 goto end;
1638 }
1639 }
f3ed775e
DG		 1640
1641end:
89476427
JRJ		 1642 /* Mi clean-up */
1643 if (writer && mi_lttng_writer_destroy(writer)) {
1644 /* Preserve original error code */
1645 ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
1646 }
1647
cd80958d
DG		 1648 if (opt_session_name == NULL) {
1649 free(session_name);
1650 }
1651
89476427
JRJ		 1652 /* Overwrite ret if an error occurred in enable_events */
1653 ret = command_ret ? command_ret : ret;
1654
721b94fe
JR		 1655 free(userspace_config);
1656 free(kernel_config);
1657 free(jul_config);
1658 free(log4j_config);
1659 free(python_config);
ca1c3607 1660 poptFreeContext(pc);
f3ed775e
DG		 1661 return ret;
1662}
LTTng tools - Deliverables
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