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Fix: lttng: incorrect domain list printed when no domain is provided
[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
87e96404 29#include <common/sessiond-comm/sessiond-comm.h>
f5436bfc 30#include <common/compat/string.h>
9f449915 31#include <common/string-utils/string-utils.h>
f3ed775e 32
89476427
JRJ		 33/* Mi dependancy */
34#include <common/mi-lttng.h>
35
36#include "../command.h"
37
8ab7c0d9
MD		 38#if (LTTNG_SYMBOL_NAME_LEN == 256)
39#define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255"
40#endif
41
f3ed775e
DG		 42static char *opt_event_list;
43static int opt_event_type;
0cda4f28
MD		 44static const char *opt_loglevel;
45static int opt_loglevel_type;
6181537c 46static int opt_kernel;
5440dc42 47static char *opt_session_name;
f3ed775e 48static int opt_userspace;
b9dfb167 49static int opt_jul;
5cdb6027 50static int opt_log4j;
0e115563 51static int opt_python;
f3ed775e 52static int opt_enable_all;
cf0e5467 53static char *opt_probe;
8f0d098b 54static char *opt_function;
f3ed775e 55static char *opt_channel_name;
53a80697 56static char *opt_filter;
fac3366c 57static char *opt_exclude;
f3ed775e 58
4fc83d94
PP		 59#ifdef LTTNG_EMBED_HELP
60static const char help_msg[] =
61#include <lttng-enable-event.1.h>
62;
63#endif
64
f3ed775e
DG		 65enum {
66 OPT_HELP = 1,
f3ed775e 67 OPT_TRACEPOINT,
cf0e5467 68 OPT_PROBE,
f3ed775e 69 OPT_FUNCTION,
a54bd42d 70 OPT_SYSCALL,
eeac7d46 71 OPT_USERSPACE,
0cda4f28
MD		 72 OPT_LOGLEVEL,
73 OPT_LOGLEVEL_ONLY,
679b4943 74 OPT_LIST_OPTIONS,
53a80697 75 OPT_FILTER,
fac3366c 76 OPT_EXCLUDE,
f3ed775e
DG		 77};
78
cd80958d 79static struct lttng_handle *handle;
89476427 80static struct mi_writer *writer;
cd80958d 81
f3ed775e
DG		 82static struct poptOption long_options[] = {
83 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
84 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42 85 {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e14f64a8 86 {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0},
f3ed775e
DG		 87 {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
88 {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610 89 {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
b9dfb167 90 {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027 91 {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
0e115563 92 {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
f3ed775e 93 {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0},
7ebae521 94 {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0},
40e9d5d3 95 {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0},
7ebae521 96 {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0},
0cda4f28
MD		 97 {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0},
98 {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0},
679b4943 99 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
53a80697 100 {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0},
fac3366c 101 {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0},
f3ed775e
DG		 102 {0, 0, 0, 0, 0, 0, 0}
103};
104
0d63dd19 105/*
6181537c 106 * Parse probe options.
0d63dd19 107 */
cf0e5467 108static int parse_probe_opts(struct lttng_event *ev, char *opt)
0d63dd19 109{
49d4e302
JRJ		 110 int ret = CMD_SUCCESS;
111 int match;
8ff0bbd0 112 char s_hex[19];
8ab7c0d9 113#define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */
0d63dd19
DG		 114 char name[LTTNG_SYMBOL_NAME_LEN];
115
116 if (opt == NULL) {
49d4e302 117 ret = CMD_ERROR;
8f0d098b 118 goto end;
0d63dd19
DG		 119 }
120
121 /* Check for symbol+offset */
49d4e302 122 match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API
8ab7c0d9 123 "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex);
49d4e302 124 if (match == 2) {
7d29a247 125 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 126 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
cf0e5467 127 DBG("probe symbol %s", ev->attr.probe.symbol_name);
9d035200 128 if (*s_hex == '\0') {
8ff0bbd0 129 ERR("Invalid probe offset %s", s_hex);
49d4e302 130 ret = CMD_ERROR;
8f0d098b 131 goto end;
0d63dd19 132 }
8ff0bbd0 133 ev->attr.probe.offset = strtoul(s_hex, NULL, 0);
cf0e5467 134 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
3000dc78 135 ev->attr.probe.addr = 0;
8f0d098b
MD		 136 goto end;
137 }
138
139 /* Check for symbol */
aeb5443d 140 if (isalpha(name[0]) || name[0] == '_') {
49d4e302 141 match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s",
8ab7c0d9 142 name);
49d4e302 143 if (match == 1) {
8f0d098b 144 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 145 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
8f0d098b
MD		 146 DBG("probe symbol %s", ev->attr.probe.symbol_name);
147 ev->attr.probe.offset = 0;
148 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
149 ev->attr.probe.addr = 0;
150 goto end;
151 }
0d63dd19
DG		 152 }
153
154 /* Check for address */
49d4e302
JRJ		 155 match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex);
156 if (match > 0) {
f63488d3
FD		 157 /*
158 * Return an error if the first character of the tentative
159 * address is NULL or not a digit. It can be "0" if the address
160 * is in hexadecimal and can be 1 to 9 if it's in decimal.
161 */
162 if (*s_hex == '\0' || !isdigit(*s_hex)) {
163 ERR("Invalid probe description %s", s_hex);
49d4e302 164 ret = CMD_ERROR;
8f0d098b 165 goto end;
0d63dd19 166 }
8ff0bbd0 167 ev->attr.probe.addr = strtoul(s_hex, NULL, 0);
cf0e5467 168 DBG("probe addr %" PRIu64, ev->attr.probe.addr);
3000dc78
DG		 169 ev->attr.probe.offset = 0;
170 memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN);
8f0d098b 171 goto end;
0d63dd19
DG		 172 }
173
174 /* No match */
49d4e302 175 ret = CMD_ERROR;
0d63dd19 176
8f0d098b 177end:
0d63dd19
DG		 178 return ret;
179}
180
5cdb6027
DG		 181/*
182 * Maps LOG4j loglevel from string to value
183 */
184static int loglevel_log4j_str_to_value(const char *inputstr)
185{
186 int i = 0;
187 char str[LTTNG_SYMBOL_NAME_LEN];
188
3712b110
JG		 189 if (!inputstr || strlen(inputstr) == 0) {
190 return -1;
191 }
192
5cdb6027
DG		 193 /*
194 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
195 * added at the end of the loop so a the upper bound we avoid the overflow.
196 */
197 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
198 str[i] = toupper(inputstr[i]);
199 i++;
200 }
201 str[i] = '\0';
202
203 if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) {
204 return LTTNG_LOGLEVEL_LOG4J_OFF;
205 } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) {
206 return LTTNG_LOGLEVEL_LOG4J_FATAL;
207 } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) {
208 return LTTNG_LOGLEVEL_LOG4J_ERROR;
209 } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) {
210 return LTTNG_LOGLEVEL_LOG4J_WARN;
211 } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) {
212 return LTTNG_LOGLEVEL_LOG4J_INFO;
213 } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) {
214 return LTTNG_LOGLEVEL_LOG4J_DEBUG;
215 } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) {
216 return LTTNG_LOGLEVEL_LOG4J_TRACE;
217 } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) {
218 return LTTNG_LOGLEVEL_LOG4J_ALL;
219 } else {
220 return -1;
221 }
222}
223
b2064f54
DG		 224/*
225 * Maps JUL loglevel from string to value
226 */
227static int loglevel_jul_str_to_value(const char *inputstr)
228{
229 int i = 0;
230 char str[LTTNG_SYMBOL_NAME_LEN];
231
3712b110
JG		 232 if (!inputstr || strlen(inputstr) == 0) {
233 return -1;
234 }
235
b2064f54
DG		 236 /*
237 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
238 * added at the end of the loop so a the upper bound we avoid the overflow.
239 */
240 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
241 str[i] = toupper(inputstr[i]);
242 i++;
243 }
244 str[i] = '\0';
245
246 if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) {
247 return LTTNG_LOGLEVEL_JUL_OFF;
248 } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) {
249 return LTTNG_LOGLEVEL_JUL_SEVERE;
250 } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) {
251 return LTTNG_LOGLEVEL_JUL_WARNING;
252 } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) {
253 return LTTNG_LOGLEVEL_JUL_INFO;
254 } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) {
255 return LTTNG_LOGLEVEL_JUL_CONFIG;
256 } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) {
257 return LTTNG_LOGLEVEL_JUL_FINE;
258 } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) {
259 return LTTNG_LOGLEVEL_JUL_FINER;
260 } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) {
261 return LTTNG_LOGLEVEL_JUL_FINEST;
262 } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) {
263 return LTTNG_LOGLEVEL_JUL_ALL;
264 } else {
265 return -1;
266 }
267}
268
0e115563
DG		 269/*
270 * Maps Python loglevel from string to value
271 */
272static int loglevel_python_str_to_value(const char *inputstr)
273{
274 int i = 0;
275 char str[LTTNG_SYMBOL_NAME_LEN];
276
3712b110
JG		 277 if (!inputstr || strlen(inputstr) == 0) {
278 return -1;
279 }
280
0e115563
DG		 281 /*
282 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
283 * added at the end of the loop so a the upper bound we avoid the overflow.
284 */
285 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
286 str[i] = toupper(inputstr[i]);
287 i++;
288 }
289 str[i] = '\0';
290
291 if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) {
292 return LTTNG_LOGLEVEL_PYTHON_CRITICAL;
293 } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) {
294 return LTTNG_LOGLEVEL_PYTHON_ERROR;
295 } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) {
296 return LTTNG_LOGLEVEL_PYTHON_WARNING;
297 } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) {
298 return LTTNG_LOGLEVEL_PYTHON_INFO;
299 } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) {
300 return LTTNG_LOGLEVEL_PYTHON_DEBUG;
301 } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) {
302 return LTTNG_LOGLEVEL_PYTHON_NOTSET;
303 } else {
304 return -1;
305 }
306}
307
8005f29a 308/*
0c8477c8 309 * Maps loglevel from string to value
8005f29a
MD		 310 */
311static
46839cc2 312int loglevel_str_to_value(const char *inputstr)
8005f29a 313{
46839cc2
MD		 314 int i = 0;
315 char str[LTTNG_SYMBOL_NAME_LEN];
316
3712b110
JG		 317 if (!inputstr || strlen(inputstr) == 0) {
318 return -1;
319 }
320
e051e07c
DG		 321 /*
322 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
323 * added at the end of the loop so a the upper bound we avoid the overflow.
324 */
325 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
46839cc2
MD		 326 str[i] = toupper(inputstr[i]);
327 i++;
328 }
329 str[i] = '\0';
330 if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) {
331 return LTTNG_LOGLEVEL_EMERG;
332 } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) {
333 return LTTNG_LOGLEVEL_ALERT;
334 } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) {
335 return LTTNG_LOGLEVEL_CRIT;
336 } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) {
337 return LTTNG_LOGLEVEL_ERR;
338 } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) {
339 return LTTNG_LOGLEVEL_WARNING;
340 } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) {
341 return LTTNG_LOGLEVEL_NOTICE;
342 } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) {
343 return LTTNG_LOGLEVEL_INFO;
344 } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) {
345 return LTTNG_LOGLEVEL_DEBUG_SYSTEM;
346 } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) {
347 return LTTNG_LOGLEVEL_DEBUG_PROGRAM;
348 } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) {
349 return LTTNG_LOGLEVEL_DEBUG_PROCESS;
350 } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) {
351 return LTTNG_LOGLEVEL_DEBUG_MODULE;
352 } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) {
353 return LTTNG_LOGLEVEL_DEBUG_UNIT;
354 } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) {
355 return LTTNG_LOGLEVEL_DEBUG_FUNCTION;
356 } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) {
357 return LTTNG_LOGLEVEL_DEBUG_LINE;
358 } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) {
359 return LTTNG_LOGLEVEL_DEBUG;
8005f29a
MD		 360 } else {
361 return -1;
362 }
363}
364
85076754
MD		 365static
366const char *print_channel_name(const char *name)
367{
368 return name ? : DEFAULT_CHANNEL_NAME;
369}
370
371static
372const char *print_raw_channel_name(const char *name)
373{
374 return name ? : "<default>";
375}
376
89476427
JRJ		 377/*
378 * Mi print exlcusion list
379 */
380static
9f449915 381int mi_print_exclusion(char **names)
89476427
JRJ		 382{
383 int i, ret;
9f449915 384 int count = names ? strutils_array_of_strings_len(names) : 0;
89476427
JRJ		 385
386 assert(writer);
387
388 if (count == 0) {
389 ret = 0;
390 goto end;
391 }
392 ret = mi_lttng_writer_open_element(writer, config_element_exclusions);
393 if (ret) {
394 goto end;
395 }
396
397 for (i = 0; i < count; i++) {
398 ret = mi_lttng_writer_write_element_string(writer,
399 config_element_exclusion, names[i]);
400 if (ret) {
401 goto end;
402 }
403 }
404
405 /* Close exclusions element */
406 ret = mi_lttng_writer_close_element(writer);
407
408end:
409 return ret;
410}
411
9c48cab3
JI		 412/*
413 * Return allocated string for pretty-printing exclusion names.
414 */
415static
9f449915 416char *print_exclusions(char **names)
9c48cab3
JI		 417{
418 int length = 0;
419 int i;
420 const char *preamble = " excluding ";
421 char *ret;
9f449915 422 int count = names ? strutils_array_of_strings_len(names) : 0;
9c48cab3
JI		 423
424 if (count == 0) {
425 return strdup("");
426 }
427
428 /* calculate total required length */
429 for (i = 0; i < count; i++) {
9f449915 430 length += strlen(names[i]) + 4;
9c48cab3
JI		 431 }
432
433 /* add length of preamble + one for NUL - one for last (missing) comma */
434 length += strlen(preamble);
9f449915 435 ret = zmalloc(length + 1);
fd591b18
MD		 436 if (!ret) {
437 return NULL;
438 }
9c48cab3
JI		 439 strncpy(ret, preamble, length);
440 for (i = 0; i < count; i++) {
9f449915 441 strcat(ret, "\"");
9c48cab3 442 strcat(ret, names[i]);
9f449915 443 strcat(ret, "\"");
9c48cab3 444 if (i != count - 1) {
9f449915 445 strcat(ret, ", ");
9c48cab3
JI		 446 }
447 }
89476427 448
9c48cab3
JI		 449 return ret;
450}
451
748bde76 452static
9f449915 453int check_exclusion_subsets(const char *event_name, const char *exclusion)
748bde76 454{
9f449915
PP		 455 bool warn = false;
456 int ret = 0;
457 const char *e = event_name;
458 const char *x = exclusion;
459
460 /* Scan both the excluder and the event letter by letter */
461 while (true) {
462 if (*e == '\\') {
463 if (*x != *e) {
464 warn = true;
465 goto end;
466 }
748bde76 467
9f449915
PP		 468 e++;
469 x++;
470 goto cmp_chars;
471 }
472
473 if (*x == '*') {
474 /* Event is a subset of the excluder */
475 ERR("Event %s: %s excludes all events from %s",
476 event_name, exclusion, event_name);
477 goto error;
478 }
479
480 if (*e == '*') {
481 /*
482 * Reached the end of the event name before the
483 * end of the exclusion: this is valid.
484 */
485 goto end;
486 }
487
488cmp_chars:
489 if (*x != *e) {
490 warn = true;
491 break;
492 }
493
494 x++;
495 e++;
748bde76
JI		 496 }
497
9f449915 498 goto end;
748bde76 499
9f449915
PP		 500error:
501 ret = -1;
748bde76 502
9f449915
PP		 503end:
504 if (warn) {
505 WARN("Event %s: %s does not exclude any events from %s",
506 event_name, exclusion, event_name);
507 }
748bde76 508
9f449915
PP		 509 return ret;
510}
511
9f449915
PP		 512static
513int create_exclusion_list_and_validate(const char *event_name,
514 const char *exclusions_arg,
515 char ***exclusion_list)
516{
517 int ret = 0;
518 char **exclusions = NULL;
519
520 /* Event name must be a valid globbing pattern to allow exclusions. */
521 if (!strutils_is_star_glob_pattern(event_name)) {
522 ERR("Event %s: Exclusions can only be used with a globbing pattern",
523 event_name);
524 goto error;
525 }
526
527 /* Split exclusions. */
528 exclusions = strutils_split(exclusions_arg, ',', true);
529 if (!exclusions) {
530 goto error;
531 }
532
533 /*
534 * If the event name is a star-at-end only globbing pattern,
535 * then we can validate the individual exclusions. Otherwise
536 * all exclusions are passed to the session daemon.
537 */
538 if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) {
539 char * const *exclusion;
540
541 for (exclusion = exclusions; *exclusion; exclusion++) {
542 if (!strutils_is_star_glob_pattern(*exclusion) ||
543 strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) {
c1a54dbd 544 ret = check_exclusion_subsets(event_name, *exclusion);
9f449915 545 if (ret) {
5ef79758
MD		 546 goto error;
547 }
748bde76 548 }
748bde76
JI		 549 }
550 }
9f449915
PP		 551
552 *exclusion_list = exclusions;
553
748bde76 554 goto end;
9f449915 555
748bde76 556error:
9f449915
PP		 557 ret = -1;
558 strutils_free_null_terminated_array_of_strings(exclusions);
559
748bde76 560end:
748bde76
JI		 561 return ret;
562}
502bbe89 563
9f449915
PP		 564static void warn_on_truncated_exclusion_names(char * const *exclusion_list,
565 int *warn)
502bbe89 566{
9f449915 567 char * const *exclusion;
502bbe89 568
9f449915
PP		 569 for (exclusion = exclusion_list; *exclusion; exclusion++) {
570 if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) {
502bbe89 571 WARN("Event exclusion \"%s\" will be truncated",
9f449915 572 *exclusion);
502bbe89
PP		 573 *warn = 1;
574 }
575 }
576}
577
f3ed775e 578/*
6181537c 579 * Enabling event using the lttng API.
89476427 580 * Note: in case of error only the last error code will be return.
f3ed775e 581 */
cd80958d 582static int enable_events(char *session_name)
f3ed775e 583{
89476427
JRJ		 584 int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
585 int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1;
b73d0b29 586 char *event_name, *channel_name = NULL;
f3ed775e 587 struct lttng_event ev;
7d29a247 588 struct lttng_domain dom;
7ed70bc9 589 char **exclusion_list = NULL;
f3ed775e 590
441c16a7
MD		 591 memset(&ev, 0, sizeof(ev));
592 memset(&dom, 0, sizeof(dom));
593
53a80697 594 if (opt_kernel) {
67b58630
JG		 595 if (opt_loglevel) {
596 WARN("Kernel loglevels are not supported.");
597 }
53a80697
MD		 598 }
599
7d29a247
DG		 600 /* Create lttng domain */
601 if (opt_kernel) {
602 dom.type = LTTNG_DOMAIN_KERNEL;
7972aab2 603 dom.buf_type = LTTNG_BUFFER_GLOBAL;
d78d6610 604 } else if (opt_userspace) {
2bdd86d4 605 dom.type = LTTNG_DOMAIN_UST;
7972aab2 606 /* Default. */
8692d4e5 607 dom.buf_type = LTTNG_BUFFER_PER_UID;
b9dfb167
DG		 608 } else if (opt_jul) {
609 dom.type = LTTNG_DOMAIN_JUL;
610 /* Default. */
611 dom.buf_type = LTTNG_BUFFER_PER_UID;
5cdb6027
DG		 612 } else if (opt_log4j) {
613 dom.type = LTTNG_DOMAIN_LOG4J;
614 /* Default. */
615 dom.buf_type = LTTNG_BUFFER_PER_UID;
0e115563
DG		 616 } else if (opt_python) {
617 dom.type = LTTNG_DOMAIN_PYTHON;
618 /* Default. */
619 dom.buf_type = LTTNG_BUFFER_PER_UID;
6181537c 620 } else {
3ecec76a
PP		 621 /* Checked by the caller. */
622 assert(0);
2bdd86d4 623 }
7d29a247 624
8b08c525
AB		 625 if (opt_exclude) {
626 switch (dom.type) {
627 case LTTNG_DOMAIN_KERNEL:
628 case LTTNG_DOMAIN_JUL:
629 case LTTNG_DOMAIN_LOG4J:
630 case LTTNG_DOMAIN_PYTHON:
631 ERR("Event name exclusions are not yet implemented for %s events",
632 get_domain_str(dom.type));
633 ret = CMD_ERROR;
634 goto error;
635 case LTTNG_DOMAIN_UST:
636 /* Exclusions supported */
637 break;
638 default:
639 assert(0);
640 }
d5dd17fd
JI		 641 }
642
85076754 643 channel_name = opt_channel_name;
ae856491 644
cd80958d
DG		 645 handle = lttng_create_handle(session_name, &dom);
646 if (handle == NULL) {
647 ret = -1;
648 goto error;
649 }
1aef21b6 650
89476427
JRJ		 651 /* Prepare Mi */
652 if (lttng_opt_mi) {
653 /* Open a events element */
654 ret = mi_lttng_writer_open_element(writer, config_element_events);
655 if (ret) {
656 ret = CMD_ERROR;
657 goto error;
658 }
659 }
660
cd80958d 661 if (opt_enable_all) {
8c9ae521 662 /* Default setup for enable all */
75e8c5ab
MD		 663 if (opt_kernel) {
664 ev.type = opt_event_type;
29c62722 665 strcpy(ev.name, "*");
300b8fd5
MD		 666 /* kernel loglevels not implemented */
667 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
75e8c5ab
MD		 668 } else {
669 ev.type = LTTNG_EVENT_TRACEPOINT;
670 strcpy(ev.name, "*");
300b8fd5
MD		 671 ev.loglevel_type = opt_loglevel_type;
672 if (opt_loglevel) {
0e115563 673 assert(opt_userspace || opt_jul || opt_log4j || opt_python);
b2064f54
DG		 674 if (opt_userspace) {
675 ev.loglevel = loglevel_str_to_value(opt_loglevel);
676 } else if (opt_jul) {
677 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
5cdb6027
DG		 678 } else if (opt_log4j) {
679 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
0e115563
DG		 680 } else if (opt_python) {
681 ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
b2064f54 682 }
300b8fd5
MD		 683 if (ev.loglevel == -1) {
684 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 685 ret = -LTTNG_ERR_INVALID;
300b8fd5
MD		 686 goto error;
687 }
22e25b71 688 } else {
0e115563 689 assert(opt_userspace || opt_jul || opt_log4j || opt_python);
b2064f54
DG		 690 if (opt_userspace) {
691 ev.loglevel = -1;
34aa3685 692 } else if (opt_jul) {
b2064f54 693 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
34aa3685
JG		 694 } else if (opt_log4j) {
695 ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
0e115563
DG		 696 } else if (opt_python) {
697 ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
b2064f54 698 }
300b8fd5 699 }
75e8c5ab 700 }
8c9ae521 701
7ed70bc9 702 if (opt_exclude) {
9f449915
PP		 703 ret = create_exclusion_list_and_validate("*",
704 opt_exclude, &exclusion_list);
705 if (ret) {
706 ret = CMD_ERROR;
7ed70bc9
JI		 707 goto error;
708 }
502bbe89 709
9f449915 710 ev.exclusion = 1;
502bbe89 711 warn_on_truncated_exclusion_names(exclusion_list,
9f449915 712 &warn);
7ed70bc9 713 }
025faf73 714 if (!opt_filter) {
7ed70bc9
JI		 715 ret = lttng_enable_event_with_exclusions(handle,
716 &ev, channel_name,
717 NULL,
9f449915
PP		 718 exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
719 exclusion_list);
025faf73
DG		 720 if (ret < 0) {
721 switch (-ret) {
722 case LTTNG_ERR_KERN_EVENT_EXIST:
723 WARN("Kernel events already enabled (channel %s, session %s)",
85076754 724 print_channel_name(channel_name), session_name);
89476427 725 warn = 1;
025faf73 726 break;
45d5d421
CB		 727 case LTTNG_ERR_TRACE_ALREADY_STARTED:
728 {
729 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
730 ERR("Events: %s (channel %s, session %s)",
731 msg,
732 print_channel_name(channel_name),
733 session_name);
734 error = 1;
735 break;
736 }
025faf73
DG		 737 default:
738 ERR("Events: %s (channel %s, session %s)",
85076754
MD		 739 lttng_strerror(ret),
740 ret == -LTTNG_ERR_NEED_CHANNEL_NAME
741 ? print_raw_channel_name(channel_name)
742 : print_channel_name(channel_name),
743 session_name);
89476427 744 error = 1;
025faf73
DG		 745 break;
746 }
747 goto end;
42224349 748 }
8c9ae521 749
025faf73
DG		 750 switch (opt_event_type) {
751 case LTTNG_EVENT_TRACEPOINT:
67b58630 752 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9f449915 753 char *exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 754
755 if (!exclusion_string) {
756 PERROR("Cannot allocate exclusion_string");
757 error = 1;
758 goto end;
759 }
9c48cab3 760 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
b9dfb167 761 get_domain_str(dom.type),
9c48cab3 762 exclusion_string,
85076754 763 print_channel_name(channel_name),
025faf73 764 opt_loglevel);
9c48cab3 765 free(exclusion_string);
025faf73 766 } else {
9f449915 767 char *exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 768
769 if (!exclusion_string) {
770 PERROR("Cannot allocate exclusion_string");
771 error = 1;
772 goto end;
773 }
9c48cab3 774 MSG("All %s tracepoints%s are enabled in channel %s",
b9dfb167 775 get_domain_str(dom.type),
9c48cab3 776 exclusion_string,
85076754 777 print_channel_name(channel_name));
9c48cab3 778 free(exclusion_string);
025faf73
DG		 779 }
780 break;
781 case LTTNG_EVENT_SYSCALL:
782 if (opt_kernel) {
6e911cad
MD		 783 MSG("All %s system calls are enabled in channel %s",
784 get_domain_str(dom.type),
85076754 785 print_channel_name(channel_name));
025faf73
DG		 786 }
787 break;
788 case LTTNG_EVENT_ALL:
67b58630 789 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9f449915 790 char *exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 791
792 if (!exclusion_string) {
793 PERROR("Cannot allocate exclusion_string");
794 error = 1;
795 goto end;
796 }
9c48cab3 797 MSG("All %s events%s are enabled in channel %s for loglevel %s",
b9dfb167 798 get_domain_str(dom.type),
9c48cab3 799 exclusion_string,
85076754 800 print_channel_name(channel_name),
025faf73 801 opt_loglevel);
9c48cab3 802 free(exclusion_string);
025faf73 803 } else {
9f449915 804 char *exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 805
806 if (!exclusion_string) {
807 PERROR("Cannot allocate exclusion_string");
808 error = 1;
809 goto end;
810 }
9c48cab3 811 MSG("All %s events%s are enabled in channel %s",
b9dfb167 812 get_domain_str(dom.type),
9c48cab3 813 exclusion_string,
85076754 814 print_channel_name(channel_name));
9c48cab3 815 free(exclusion_string);
025faf73
DG		 816 }
817 break;
818 default:
819 /*
820 * We should not be here since lttng_enable_event should have
821 * failed on the event type.
822 */
823 goto error;
57064ada 824 }
f3ed775e 825 }
89476427 826
025faf73 827 if (opt_filter) {
89476427 828 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
9f449915
PP		 829 opt_filter,
830 exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
831 exclusion_list);
89476427
JRJ		 832 if (command_ret < 0) {
833 switch (-command_ret) {
16363652 834 case LTTNG_ERR_FILTER_EXIST:
85076754 835 WARN("Filter on all events is already enabled"
16363652 836 " (channel %s, session %s)",
85076754 837 print_channel_name(channel_name), session_name);
89476427 838 warn = 1;
16363652 839 break;
45d5d421
CB		 840 case LTTNG_ERR_TRACE_ALREADY_STARTED:
841 {
842 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
843 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
844 msg,
845 print_channel_name(channel_name),
846 session_name, opt_filter);
847 error = 1;
848 break;
849 }
16363652 850 default:
85076754 851 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
da3d7d0e
JRJ		 852 lttng_strerror(command_ret),
853 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 854 ? print_raw_channel_name(channel_name)
855 : print_channel_name(channel_name),
856 session_name, opt_filter);
89476427 857 error = 1;
16363652
DG		 858 break;
859 }
89476427 860 error_holder = command_ret;
16363652 861 } else {
89476427 862 ev.filter = 1;
16363652
DG		 863 MSG("Filter '%s' successfully set", opt_filter);
864 }
865 }
89476427
JRJ		 866
867 if (lttng_opt_mi) {
868 /* The wildcard * is used for kernel and ust domain to
869 * represent ALL. We copy * in event name to force the wildcard use
870 * for kernel domain
871 *
872 * Note: this is strictly for semantic and printing while in
873 * machine interface mode.
874 */
875 strcpy(ev.name, "*");
876
877 /* If we reach here the events are enabled */
878 if (!error && !warn) {
879 ev.enabled = 1;
880 } else {
881 ev.enabled = 0;
882 success = 0;
883 }
970d848b 884 ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
89476427
JRJ		 885 if (ret) {
886 ret = CMD_ERROR;
887 goto error;
888 }
889
890 /* print exclusion */
9f449915 891 ret = mi_print_exclusion(exclusion_list);
89476427
JRJ		 892 if (ret) {
893 ret = CMD_ERROR;
894 goto error;
895 }
896
897 /* Success ? */
898 ret = mi_lttng_writer_write_element_bool(writer,
899 mi_lttng_element_command_success, success);
900 if (ret) {
901 ret = CMD_ERROR;
902 goto error;
903 }
904
905 /* Close event element */
906 ret = mi_lttng_writer_close_element(writer);
907 if (ret) {
908 ret = CMD_ERROR;
909 goto error;
910 }
911 }
912
8c9ae521 913 goto end;
f3ed775e
DG		 914 }
915
916 /* Strip event list */
917 event_name = strtok(opt_event_list, ",");
918 while (event_name != NULL) {
6181537c
DG		 919 /* Copy name and type of the event */
920 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
921 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
922 ev.type = opt_event_type;
923
f3ed775e
DG		 924 /* Kernel tracer action */
925 if (opt_kernel) {
926 DBG("Enabling kernel event %s for channel %s",
85076754
MD		 927 event_name,
928 print_channel_name(channel_name));
f3ed775e
DG		 929
930 switch (opt_event_type) {
29c62722
MD		 931 case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */
932 /* If event name differs from *, select tracepoint. */
933 if (strcmp(ev.name, "*")) {
934 ev.type = LTTNG_EVENT_TRACEPOINT;
935 }
936 break;
e6ddca71 937 case LTTNG_EVENT_TRACEPOINT:
f3ed775e 938 break;
7d29a247 939 case LTTNG_EVENT_PROBE:
cf0e5467 940 ret = parse_probe_opts(&ev, opt_probe);
49d4e302 941 if (ret) {
cf0e5467 942 ERR("Unable to parse probe options");
0d63dd19
DG		 943 ret = 0;
944 goto error;
945 }
f3ed775e
DG		 946 break;
947 case LTTNG_EVENT_FUNCTION:
8f0d098b 948 ret = parse_probe_opts(&ev, opt_function);
49d4e302 949 if (ret) {
8f0d098b
MD		 950 ERR("Unable to parse function probe options");
951 ret = 0;
952 goto error;
953 }
954 break;
a54bd42d 955 case LTTNG_EVENT_SYSCALL:
c6aa2d41
MD		 956 ev.type = LTTNG_EVENT_SYSCALL;
957 break;
f3ed775e 958 default:
1ab1ea0b 959 ret = CMD_UNDEFINED;
f3ed775e
DG		 960 goto error;
961 }
0cda4f28 962
0cda4f28 963 /* kernel loglevels not implemented */
8005f29a 964 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
f3ed775e 965 } else if (opt_userspace) { /* User-space tracer action */
300b8fd5 966 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name,
85076754 967 print_channel_name(channel_name), opt_loglevel ? : "<all>");
2bdd86d4
MD		 968
969 switch (opt_event_type) {
970 case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */
2bdd86d4
MD		 971 /* Fall-through */
972 case LTTNG_EVENT_TRACEPOINT:
e4baff1e
MD		 973 /* Copy name and type of the event */
974 ev.type = LTTNG_EVENT_TRACEPOINT;
975 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
976 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
2bdd86d4
MD		 977 break;
978 case LTTNG_EVENT_PROBE:
979 case LTTNG_EVENT_FUNCTION:
2bdd86d4
MD		 980 case LTTNG_EVENT_SYSCALL:
981 default:
cc62c0c0 982 ERR("Event type not available for user-space tracing");
4ce78777 983 ret = CMD_UNSUPPORTED;
2bdd86d4
MD		 984 goto error;
985 }
0cda4f28 986
7ed70bc9 987 if (opt_exclude) {
89476427 988 ev.exclusion = 1;
d5dd17fd
JI		 989 if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) {
990 ERR("Exclusion option can only be used with tracepoint events");
991 ret = CMD_ERROR;
992 goto error;
993 }
7ed70bc9 994 /* Free previously allocated items */
9f449915
PP		 995 strutils_free_null_terminated_array_of_strings(
996 exclusion_list);
997 exclusion_list = NULL;
998 ret = create_exclusion_list_and_validate(
999 event_name, opt_exclude,
1000 &exclusion_list);
1001 if (ret) {
1002 ret = CMD_ERROR;
7ed70bc9
JI		 1003 goto error;
1004 }
502bbe89
PP		 1005
1006 warn_on_truncated_exclusion_names(
9f449915 1007 exclusion_list, &warn);
7ed70bc9
JI		 1008 }
1009
0cda4f28 1010 ev.loglevel_type = opt_loglevel_type;
ed7f4083 1011 if (opt_loglevel) {
8005f29a
MD		 1012 ev.loglevel = loglevel_str_to_value(opt_loglevel);
1013 if (ev.loglevel == -1) {
1014 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 1015 ret = -LTTNG_ERR_INVALID;
8005f29a
MD		 1016 goto error;
1017 }
22e25b71
MD		 1018 } else {
1019 ev.loglevel = -1;
ed7f4083 1020 }
0e115563 1021 } else if (opt_jul || opt_log4j || opt_python) {
b9dfb167
DG		 1022 if (opt_event_type != LTTNG_EVENT_ALL &&
1023 opt_event_type != LTTNG_EVENT_TRACEPOINT) {
5cdb6027 1024 ERR("Event type not supported for domain.");
b9dfb167
DG		 1025 ret = CMD_UNSUPPORTED;
1026 goto error;
1027 }
b2064f54
DG		 1028
1029 ev.loglevel_type = opt_loglevel_type;
1030 if (opt_loglevel) {
5cdb6027
DG		 1031 if (opt_jul) {
1032 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
1033 } else if (opt_log4j) {
1034 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
0e115563
DG		 1035 } else if (opt_python) {
1036 ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
5cdb6027 1037 }
b2064f54
DG		 1038 if (ev.loglevel == -1) {
1039 ERR("Unknown loglevel %s", opt_loglevel);
1040 ret = -LTTNG_ERR_INVALID;
1041 goto error;
1042 }
1043 } else {
5cdb6027
DG		 1044 if (opt_jul) {
1045 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
1046 } else if (opt_log4j) {
1047 ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
0e115563
DG		 1048 } else if (opt_python) {
1049 ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
5cdb6027 1050 }
b2064f54 1051 }
b9dfb167
DG		 1052 ev.type = LTTNG_EVENT_TRACEPOINT;
1053 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
1054 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
f3ed775e 1055 } else {
3ecec76a 1056 assert(0);
f3ed775e
DG		 1057 }
1058
025faf73 1059 if (!opt_filter) {
9c48cab3
JI		 1060 char *exclusion_string;
1061
89476427 1062 command_ret = lttng_enable_event_with_exclusions(handle,
7ed70bc9 1063 &ev, channel_name,
9f449915
PP		 1064 NULL,
1065 exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
1066 exclusion_list);
1067 exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 1068 if (!exclusion_string) {
1069 PERROR("Cannot allocate exclusion_string");
1070 error = 1;
1071 goto end;
1072 }
89476427 1073 if (command_ret < 0) {
025faf73 1074 /* Turn ret to positive value to handle the positive error code */
89476427 1075 switch (-command_ret) {
025faf73 1076 case LTTNG_ERR_KERN_EVENT_EXIST:
9c48cab3 1077 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
85076754 1078 event_name,
9c48cab3 1079 exclusion_string,
85076754 1080 print_channel_name(channel_name), session_name);
89476427 1081 warn = 1;
025faf73 1082 break;
45d5d421
CB		 1083 case LTTNG_ERR_TRACE_ALREADY_STARTED:
1084 {
1085 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
1086 ERR("Event %s%s: %s (channel %s, session %s)", event_name,
1087 exclusion_string,
1088 msg,
1089 print_channel_name(channel_name),
1090 session_name);
1091 error = 1;
1092 break;
1093 }
025faf73 1094 default:
9c48cab3
JI		 1095 ERR("Event %s%s: %s (channel %s, session %s)", event_name,
1096 exclusion_string,
da3d7d0e
JRJ		 1097 lttng_strerror(command_ret),
1098 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1099 ? print_raw_channel_name(channel_name)
1100 : print_channel_name(channel_name),
1101 session_name);
89476427 1102 error = 1;
025faf73
DG		 1103 break;
1104 }
89476427 1105 error_holder = command_ret;
025faf73 1106 } else {
8274eeba
AB		 1107 switch (dom.type) {
1108 case LTTNG_DOMAIN_KERNEL:
1109 case LTTNG_DOMAIN_UST:
49ceaa70 1110 MSG("%s event %s%s created in channel %s",
8274eeba
AB		 1111 get_domain_str(dom.type),
1112 event_name,
1113 exclusion_string,
1114 print_channel_name(channel_name));
1115 break;
1116 case LTTNG_DOMAIN_JUL:
1117 case LTTNG_DOMAIN_LOG4J:
1118 case LTTNG_DOMAIN_PYTHON:
1119 /*
1120 * Don't print the default channel
1121 * name for agent domains.
1122 */
895707da 1123 MSG("%s event %s%s enabled",
8274eeba
AB		 1124 get_domain_str(dom.type),
1125 event_name,
1126 exclusion_string);
1127 break;
1128 default:
1129 assert(0);
49ceaa70 1130 }
42224349 1131 }
9c48cab3 1132 free(exclusion_string);
6181537c 1133 }
025faf73
DG		 1134
1135 if (opt_filter) {
9c48cab3
JI		 1136 char *exclusion_string;
1137
89476427
JRJ		 1138 /* Filter present */
1139 ev.filter = 1;
1140
1141 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
9f449915
PP		 1142 opt_filter,
1143 exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
1144 exclusion_list);
1145 exclusion_string = print_exclusions(exclusion_list);
5ef79758
MD		 1146 if (!exclusion_string) {
1147 PERROR("Cannot allocate exclusion_string");
1148 error = 1;
1149 goto end;
1150 }
89476427
JRJ		 1151 if (command_ret < 0) {
1152 switch (-command_ret) {
7671f53c 1153 case LTTNG_ERR_FILTER_EXIST:
9c48cab3 1154 WARN("Filter on event %s%s is already enabled"
7671f53c 1155 " (channel %s, session %s)",
85076754 1156 event_name,
9c48cab3 1157 exclusion_string,
85076754 1158 print_channel_name(channel_name), session_name);
89476427 1159 warn = 1;
7671f53c 1160 break;
45d5d421
CB		 1161 case LTTNG_ERR_TRACE_ALREADY_STARTED:
1162 {
1163 const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
1164 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name,
1165 exclusion_string,
1166 msg,
1167 print_channel_name(channel_name),
1168 session_name, opt_filter);
1169 error = 1;
1170 break;
1171 }
7671f53c 1172 default:
9c48cab3
JI		 1173 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name,
1174 exclusion_string,
da3d7d0e
JRJ		 1175 lttng_strerror(command_ret),
1176 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1177 ? print_raw_channel_name(channel_name)
1178 : print_channel_name(channel_name),
1179 session_name, opt_filter);
89476427 1180 error = 1;
7671f53c
CB		 1181 break;
1182 }
89476427
JRJ		 1183 error_holder = command_ret;
1184
16363652 1185 } else {
9c48cab3
JI		 1186 MSG("Event %s%s: Filter '%s' successfully set",
1187 event_name, exclusion_string,
1188 opt_filter);
53a80697 1189 }
9c48cab3 1190 free(exclusion_string);
53a80697 1191 }
6181537c 1192
89476427
JRJ		 1193 if (lttng_opt_mi) {
1194 if (command_ret) {
1195 success = 0;
1196 ev.enabled = 0;
1197 } else {
1198 ev.enabled = 1;
1199 }
1200
970d848b 1201 ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
89476427
JRJ		 1202 if (ret) {
1203 ret = CMD_ERROR;
1204 goto error;
1205 }
1206
1207 /* print exclusion */
9f449915 1208 ret = mi_print_exclusion(exclusion_list);
89476427
JRJ		 1209 if (ret) {
1210 ret = CMD_ERROR;
1211 goto error;
1212 }
1213
1214 /* Success ? */
1215 ret = mi_lttng_writer_write_element_bool(writer,
1216 mi_lttng_element_command_success, success);
1217 if (ret) {
1218 ret = CMD_ERROR;
1219 goto end;
1220 }
1221
1222 /* Close event element */
1223 ret = mi_lttng_writer_close_element(writer);
1224 if (ret) {
1225 ret = CMD_ERROR;
1226 goto end;
1227 }
1228 }
1229
f3ed775e
DG		 1230 /* Next event */
1231 event_name = strtok(NULL, ",");
89476427
JRJ		 1232 /* Reset warn, error and success */
1233 success = 1;
f3ed775e
DG		 1234 }
1235
8c9ae521 1236end:
89476427
JRJ		 1237 /* Close Mi */
1238 if (lttng_opt_mi) {
1239 /* Close events element */
1240 ret = mi_lttng_writer_close_element(writer);
1241 if (ret) {
1242 ret = CMD_ERROR;
1243 goto error;
1244 }
1245 }
f3ed775e 1246error:
ae856491
DG		 1247 if (warn) {
1248 ret = CMD_WARNING;
1249 }
89476427
JRJ		 1250 if (error) {
1251 ret = CMD_ERROR;
1252 }
cd80958d 1253 lttng_destroy_handle(handle);
9f449915 1254 strutils_free_null_terminated_array_of_strings(exclusion_list);
7ed70bc9 1255
89476427
JRJ		 1256 /* Overwrite ret with error_holder if there was an actual error with
1257 * enabling an event.
1258 */
1259 ret = error_holder ? error_holder : ret;
1260
f3ed775e
DG		 1261 return ret;
1262}
1263
1264/*
6181537c 1265 * Add event to trace session
f3ed775e
DG		 1266 */
1267int cmd_enable_events(int argc, const char **argv)
1268{
89476427 1269 int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
f3ed775e 1270 static poptContext pc;
cd80958d 1271 char *session_name = NULL;
a798f0b9 1272 const char *leftover = NULL;
de044b7a 1273 int event_type = -1;
f3ed775e
DG		 1274
1275 pc = poptGetContext(NULL, argc, argv, long_options, 0);
1276 poptReadDefaultConfig(pc, 0);
1277
1278 /* Default event type */
7a3d1328 1279 opt_event_type = LTTNG_EVENT_ALL;
f3ed775e
DG		 1280
1281 while ((opt = poptGetNextOpt(pc)) != -1) {
1282 switch (opt) {
1283 case OPT_HELP:
4ba92f18 1284 SHOW_HELP();
f3ed775e 1285 goto end;
f3ed775e 1286 case OPT_TRACEPOINT:
e6ddca71 1287 opt_event_type = LTTNG_EVENT_TRACEPOINT;
f3ed775e 1288 break;
cf0e5467 1289 case OPT_PROBE:
7d29a247 1290 opt_event_type = LTTNG_EVENT_PROBE;
f3ed775e
DG		 1291 break;
1292 case OPT_FUNCTION:
1293 opt_event_type = LTTNG_EVENT_FUNCTION;
8f0d098b 1294 break;
a54bd42d
MD		 1295 case OPT_SYSCALL:
1296 opt_event_type = LTTNG_EVENT_SYSCALL;
0133c199 1297 break;
eeac7d46
MD		 1298 case OPT_USERSPACE:
1299 opt_userspace = 1;
eeac7d46 1300 break;
0cda4f28 1301 case OPT_LOGLEVEL:
8005f29a 1302 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE;
0cda4f28
MD		 1303 opt_loglevel = poptGetOptArg(pc);
1304 break;
1305 case OPT_LOGLEVEL_ONLY:
8005f29a 1306 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE;
0cda4f28 1307 opt_loglevel = poptGetOptArg(pc);
13dce3b7 1308 break;
679b4943
SM		 1309 case OPT_LIST_OPTIONS:
1310 list_cmd_options(stdout, long_options);
679b4943 1311 goto end;
53a80697
MD		 1312 case OPT_FILTER:
1313 break;
fac3366c
JI		 1314 case OPT_EXCLUDE:
1315 break;
f3ed775e 1316 default:
f3ed775e
DG		 1317 ret = CMD_UNDEFINED;
1318 goto end;
1319 }
de044b7a
DG		 1320
1321 /* Validate event type. Multiple event type are not supported. */
1322 if (event_type == -1) {
1323 event_type = opt_event_type;
1324 } else {
1325 if (event_type != opt_event_type) {
1326 ERR("Multiple event type not supported.");
1327 ret = CMD_ERROR;
1328 goto end;
1329 }
1330 }
f3ed775e
DG		 1331 }
1332
3ecec76a 1333 ret = print_missing_or_multiple_domains(
7f9bbb91
JG		 1334 opt_kernel + opt_userspace + opt_jul + opt_log4j +
1335 opt_python,
1336 true);
3ecec76a
PP		 1337 if (ret) {
1338 ret = CMD_ERROR;
1339 goto end;
1340 }
1341
89476427
JRJ		 1342 /* Mi check */
1343 if (lttng_opt_mi) {
1344 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
1345 if (!writer) {
1346 ret = -LTTNG_ERR_NOMEM;
1347 goto end;
1348 }
1349
1350 /* Open command element */
1351 ret = mi_lttng_writer_command_open(writer,
1352 mi_lttng_element_command_enable_event);
1353 if (ret) {
1354 ret = CMD_ERROR;
1355 goto end;
1356 }
1357
1358 /* Open output element */
1359 ret = mi_lttng_writer_open_element(writer,
1360 mi_lttng_element_command_output);
1361 if (ret) {
1362 ret = CMD_ERROR;
1363 goto end;
1364 }
1365 }
1366
f3ed775e
DG		 1367 opt_event_list = (char*) poptGetArg(pc);
1368 if (opt_event_list == NULL && opt_enable_all == 0) {
1369 ERR("Missing event name(s).\n");
ca1c3607 1370 ret = CMD_ERROR;
f3ed775e
DG		 1371 goto end;
1372 }
1373
a798f0b9
JD		 1374 leftover = poptGetArg(pc);
1375 if (leftover) {
1376 ERR("Unknown argument: %s", leftover);
1377 ret = CMD_ERROR;
1378 goto end;
1379 }
1380
cd80958d
DG		 1381 if (!opt_session_name) {
1382 session_name = get_session_name();
1383 if (session_name == NULL) {
89476427
JRJ		 1384 command_ret = CMD_ERROR;
1385 success = 0;
1386 goto mi_closing;
cd80958d
DG		 1387 }
1388 } else {
1389 session_name = opt_session_name;
1390 }
1391
89476427
JRJ		 1392 command_ret = enable_events(session_name);
1393 if (command_ret) {
1394 success = 0;
1395 goto mi_closing;
1396 }
1397
1398mi_closing:
1399 /* Mi closing */
1400 if (lttng_opt_mi) {
1401 /* Close output element */
1402 ret = mi_lttng_writer_close_element(writer);
1403 if (ret) {
1404 ret = CMD_ERROR;
1405 goto end;
1406 }
1407
1408 ret = mi_lttng_writer_write_element_bool(writer,
1409 mi_lttng_element_command_success, success);
1410 if (ret) {
1411 ret = CMD_ERROR;
1412 goto end;
1413 }
1414
1415 /* Command element close */
1416 ret = mi_lttng_writer_command_close(writer);
1417 if (ret) {
1418 ret = CMD_ERROR;
1419 goto end;
1420 }
1421 }
f3ed775e
DG		 1422
1423end:
89476427
JRJ		 1424 /* Mi clean-up */
1425 if (writer && mi_lttng_writer_destroy(writer)) {
1426 /* Preserve original error code */
1427 ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
1428 }
1429
cd80958d
DG		 1430 if (opt_session_name == NULL) {
1431 free(session_name);
1432 }
1433
89476427
JRJ		 1434 /* Overwrite ret if an error occurred in enable_events */
1435 ret = command_ret ? command_ret : ret;
1436
ca1c3607 1437 poptFreeContext(pc);
f3ed775e
DG		 1438 return ret;
1439}
9f449915 1440
LTTng 2.0 tools and control repository
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