Commit | Line | Data |
---|---|---|
f3ed775e | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
f3ed775e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f3ed775e | 5 | * |
f3ed775e DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
28ab034a JG |
9 | #include <common/compat/getenv.hpp> |
10 | #include <common/compat/string.hpp> | |
11 | #include <common/sessiond-comm/sessiond-comm.hpp> | |
12 | #include <common/string-utils/string-utils.hpp> | |
13 | #include <common/utils.hpp> | |
14 | ||
15 | #include <ctype.h> | |
16 | #include <inttypes.h> | |
f3ed775e DG |
17 | #include <popt.h> |
18 | #include <stdio.h> | |
19 | #include <stdlib.h> | |
f3ed775e DG |
20 | #include <sys/stat.h> |
21 | #include <sys/types.h> | |
22 | #include <unistd.h> | |
f3ed775e | 23 | |
89476427 | 24 | /* Mi dependancy */ |
28ab034a JG |
25 | #include "../command.hpp" |
26 | #include "../loglevel.hpp" | |
27 | #include "../uprobe.hpp" | |
28 | ||
c9e313bc | 29 | #include <common/mi-lttng.hpp> |
89476427 | 30 | |
c9e313bc SM |
31 | #include <lttng/domain-internal.hpp> |
32 | #include <lttng/event-internal.hpp> | |
7e8f2e9c | 33 | |
8ab7c0d9 | 34 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
28ab034a | 35 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" |
8ab7c0d9 MD |
36 | #endif |
37 | ||
d512607f JG |
38 | namespace { |
39 | ||
40 | int opt_event_type; | |
41 | const char *opt_loglevel; | |
42 | int opt_loglevel_type; | |
43 | int opt_kernel; | |
44 | char *opt_session_name; | |
45 | int opt_userspace; | |
46 | int opt_jul; | |
47 | int opt_log4j; | |
48 | int opt_python; | |
49 | int opt_enable_all; | |
50 | char *opt_probe; | |
51 | char *opt_userspace_probe; | |
52 | char *opt_function; | |
53 | char *opt_channel_name; | |
54 | char *opt_filter; | |
55 | char *opt_exclude; | |
f3ed775e | 56 | |
4fc83d94 PP |
57 | #ifdef LTTNG_EMBED_HELP |
58 | static const char help_msg[] = | |
59 | #include <lttng-enable-event.1.h> | |
28ab034a | 60 | ; |
4fc83d94 PP |
61 | #endif |
62 | ||
f3ed775e DG |
63 | enum { |
64 | OPT_HELP = 1, | |
f3ed775e | 65 | OPT_TRACEPOINT, |
cf0e5467 | 66 | OPT_PROBE, |
dcabc190 | 67 | OPT_USERSPACE_PROBE, |
f3ed775e | 68 | OPT_FUNCTION, |
a54bd42d | 69 | OPT_SYSCALL, |
eeac7d46 | 70 | OPT_USERSPACE, |
0cda4f28 MD |
71 | OPT_LOGLEVEL, |
72 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 73 | OPT_LIST_OPTIONS, |
53a80697 | 74 | OPT_FILTER, |
fac3366c | 75 | OPT_EXCLUDE, |
f3ed775e DG |
76 | }; |
77 | ||
d512607f JG |
78 | struct lttng_handle *handle; |
79 | struct mi_writer *writer; | |
cd80958d | 80 | |
d512607f | 81 | struct poptOption long_options[] = { |
f3ed775e | 82 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
cd9adb8b JG |
83 | { "help", 'h', POPT_ARG_NONE, nullptr, OPT_HELP, nullptr, nullptr }, |
84 | { "session", 's', POPT_ARG_STRING, &opt_session_name, 0, nullptr, nullptr }, | |
85 | { "all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, nullptr, nullptr }, | |
86 | { "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, nullptr, nullptr }, | |
87 | { "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, nullptr, nullptr }, | |
88 | { "userspace", 'u', POPT_ARG_NONE, nullptr, OPT_USERSPACE, nullptr, nullptr }, | |
89 | { "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, nullptr, nullptr }, | |
90 | { "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, nullptr, nullptr }, | |
91 | { "python", 'p', POPT_ARG_VAL, &opt_python, 1, nullptr, nullptr }, | |
92 | { "tracepoint", 0, POPT_ARG_NONE, nullptr, OPT_TRACEPOINT, nullptr, nullptr }, | |
93 | { "probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, nullptr, nullptr }, | |
94 | { "userspace-probe", | |
95 | 0, | |
96 | POPT_ARG_STRING, | |
97 | &opt_userspace_probe, | |
98 | OPT_USERSPACE_PROBE, | |
99 | nullptr, | |
100 | nullptr }, | |
101 | { "function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, nullptr, nullptr }, | |
102 | { "syscall", 0, POPT_ARG_NONE, nullptr, OPT_SYSCALL, nullptr, nullptr }, | |
103 | { "loglevel", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL, nullptr, nullptr }, | |
104 | { "loglevel-only", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL_ONLY, nullptr, nullptr }, | |
105 | { "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr }, | |
106 | { "filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, nullptr, nullptr }, | |
107 | { "exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, nullptr, nullptr }, | |
108 | { nullptr, 0, 0, nullptr, 0, nullptr, nullptr } | |
f3ed775e DG |
109 | }; |
110 | ||
0d63dd19 | 111 | /* |
6181537c | 112 | * Parse probe options. |
0d63dd19 | 113 | */ |
d512607f | 114 | int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 115 | { |
49d4e302 JRJ |
116 | int ret = CMD_SUCCESS; |
117 | int match; | |
8ff0bbd0 | 118 | char s_hex[19]; |
28ab034a | 119 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
120 | char name[LTTNG_SYMBOL_NAME_LEN]; |
121 | ||
cd9adb8b | 122 | if (opt == nullptr) { |
49d4e302 | 123 | ret = CMD_ERROR; |
8f0d098b | 124 | goto end; |
0d63dd19 DG |
125 | } |
126 | ||
127 | /* Check for symbol+offset */ | |
28ab034a JG |
128 | match = sscanf(opt, |
129 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
130 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", | |
131 | name, | |
132 | s_hex); | |
49d4e302 | 133 | if (match == 2) { |
7d29a247 | 134 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 135 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 136 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 137 | if (*s_hex == '\0') { |
8ff0bbd0 | 138 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 139 | ret = CMD_ERROR; |
8f0d098b | 140 | goto end; |
0d63dd19 | 141 | } |
cd9adb8b | 142 | ev->attr.probe.offset = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 143 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 144 | ev->attr.probe.addr = 0; |
8f0d098b MD |
145 | goto end; |
146 | } | |
147 | ||
148 | /* Check for symbol */ | |
88c91427 | 149 | if (isalpha(name[0]) || name[0] == '_') { |
28ab034a | 150 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", name); |
49d4e302 | 151 | if (match == 1) { |
8f0d098b | 152 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 153 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
154 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
155 | ev->attr.probe.offset = 0; | |
156 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
157 | ev->attr.probe.addr = 0; | |
158 | goto end; | |
159 | } | |
0d63dd19 DG |
160 | } |
161 | ||
162 | /* Check for address */ | |
49d4e302 JRJ |
163 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
164 | if (match > 0) { | |
531be721 FD |
165 | /* |
166 | * Return an error if the first character of the tentative | |
167 | * address is NULL or not a digit. It can be "0" if the address | |
168 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
169 | */ | |
170 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
171 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 172 | ret = CMD_ERROR; |
8f0d098b | 173 | goto end; |
0d63dd19 | 174 | } |
cd9adb8b | 175 | ev->attr.probe.addr = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 176 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
177 | ev->attr.probe.offset = 0; |
178 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 179 | goto end; |
0d63dd19 DG |
180 | } |
181 | ||
182 | /* No match */ | |
49d4e302 | 183 | ret = CMD_ERROR; |
0d63dd19 | 184 | |
8f0d098b | 185 | end: |
0d63dd19 DG |
186 | return ret; |
187 | } | |
188 | ||
d512607f | 189 | const char *print_channel_name(const char *name) |
85076754 | 190 | { |
28ab034a | 191 | return name ?: DEFAULT_CHANNEL_NAME; |
85076754 MD |
192 | } |
193 | ||
d512607f | 194 | const char *print_raw_channel_name(const char *name) |
85076754 | 195 | { |
28ab034a | 196 | return name ?: "<default>"; |
85076754 MD |
197 | } |
198 | ||
89476427 JRJ |
199 | /* |
200 | * Mi print exlcusion list | |
201 | */ | |
d512607f | 202 | int mi_print_exclusion(const struct lttng_dynamic_pointer_array *exclusions) |
89476427 | 203 | { |
e358ddd5 JG |
204 | int ret; |
205 | size_t i; | |
206 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); | |
89476427 | 207 | |
a0377dfe | 208 | LTTNG_ASSERT(writer); |
89476427 JRJ |
209 | |
210 | if (count == 0) { | |
211 | ret = 0; | |
212 | goto end; | |
213 | } | |
e358ddd5 | 214 | |
89476427 JRJ |
215 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); |
216 | if (ret) { | |
217 | goto end; | |
218 | } | |
219 | ||
220 | for (i = 0; i < count; i++) { | |
28ab034a JG |
221 | const char *exclusion = |
222 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 223 | |
28ab034a JG |
224 | ret = mi_lttng_writer_write_element_string( |
225 | writer, config_element_exclusion, exclusion); | |
89476427 JRJ |
226 | if (ret) { |
227 | goto end; | |
228 | } | |
229 | } | |
230 | ||
231 | /* Close exclusions element */ | |
232 | ret = mi_lttng_writer_close_element(writer); | |
233 | ||
234 | end: | |
235 | return ret; | |
236 | } | |
237 | ||
9c48cab3 JI |
238 | /* |
239 | * Return allocated string for pretty-printing exclusion names. | |
240 | */ | |
d512607f | 241 | char *print_exclusions(const struct lttng_dynamic_pointer_array *exclusions) |
9c48cab3 JI |
242 | { |
243 | int length = 0; | |
e358ddd5 | 244 | size_t i; |
bfe36393 | 245 | const char preamble[] = " excluding "; |
9c48cab3 | 246 | char *ret; |
e358ddd5 | 247 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); |
9c48cab3 JI |
248 | |
249 | if (count == 0) { | |
250 | return strdup(""); | |
251 | } | |
252 | ||
e358ddd5 | 253 | /* Calculate total required length. */ |
9c48cab3 | 254 | for (i = 0; i < count; i++) { |
28ab034a JG |
255 | const char *exclusion = |
256 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 JG |
257 | |
258 | length += strlen(exclusion) + 4; | |
9c48cab3 JI |
259 | } |
260 | ||
bfe36393 | 261 | length += sizeof(preamble); |
64803277 | 262 | ret = calloc<char>(length); |
fd591b18 | 263 | if (!ret) { |
cd9adb8b | 264 | return nullptr; |
fd591b18 | 265 | } |
e358ddd5 | 266 | |
9c48cab3 JI |
267 | strncpy(ret, preamble, length); |
268 | for (i = 0; i < count; i++) { | |
28ab034a JG |
269 | const char *exclusion = |
270 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 271 | |
9f449915 | 272 | strcat(ret, "\""); |
e358ddd5 | 273 | strcat(ret, exclusion); |
9f449915 | 274 | strcat(ret, "\""); |
9c48cab3 | 275 | if (i != count - 1) { |
9f449915 | 276 | strcat(ret, ", "); |
9c48cab3 JI |
277 | } |
278 | } | |
89476427 | 279 | |
9c48cab3 JI |
280 | return ret; |
281 | } | |
282 | ||
d512607f | 283 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 284 | { |
9f449915 PP |
285 | bool warn = false; |
286 | int ret = 0; | |
287 | const char *e = event_name; | |
288 | const char *x = exclusion; | |
289 | ||
290 | /* Scan both the excluder and the event letter by letter */ | |
291 | while (true) { | |
292 | if (*e == '\\') { | |
293 | if (*x != *e) { | |
294 | warn = true; | |
295 | goto end; | |
296 | } | |
748bde76 | 297 | |
9f449915 PP |
298 | e++; |
299 | x++; | |
300 | goto cmp_chars; | |
301 | } | |
302 | ||
303 | if (*x == '*') { | |
304 | /* Event is a subset of the excluder */ | |
305 | ERR("Event %s: %s excludes all events from %s", | |
28ab034a JG |
306 | event_name, |
307 | exclusion, | |
308 | event_name); | |
9f449915 PP |
309 | goto error; |
310 | } | |
311 | ||
312 | if (*e == '*') { | |
313 | /* | |
314 | * Reached the end of the event name before the | |
315 | * end of the exclusion: this is valid. | |
316 | */ | |
317 | goto end; | |
318 | } | |
319 | ||
28ab034a | 320 | cmp_chars: |
9f449915 PP |
321 | if (*x != *e) { |
322 | warn = true; | |
323 | break; | |
324 | } | |
325 | ||
326 | x++; | |
327 | e++; | |
748bde76 JI |
328 | } |
329 | ||
9f449915 | 330 | goto end; |
748bde76 | 331 | |
9f449915 PP |
332 | error: |
333 | ret = -1; | |
748bde76 | 334 | |
9f449915 PP |
335 | end: |
336 | if (warn) { | |
337 | WARN("Event %s: %s does not exclude any events from %s", | |
28ab034a JG |
338 | event_name, |
339 | exclusion, | |
340 | event_name); | |
9f449915 | 341 | } |
748bde76 | 342 | |
9f449915 PP |
343 | return ret; |
344 | } | |
345 | ||
d512607f JG |
346 | int create_exclusion_list_and_validate(const char *event_name, |
347 | const char *exclusions_arg, | |
348 | struct lttng_dynamic_pointer_array *exclusions) | |
b03a81fb SM |
349 | { |
350 | int ret = 0; | |
b03a81fb SM |
351 | |
352 | /* Split exclusions. */ | |
e358ddd5 JG |
353 | ret = strutils_split(exclusions_arg, ',', true, exclusions); |
354 | if (ret < 0) { | |
b03a81fb SM |
355 | goto error; |
356 | } | |
357 | ||
28ab034a | 358 | if (validate_exclusion_list(event_name, exclusions) != 0) { |
b03a81fb SM |
359 | goto error; |
360 | } | |
361 | ||
748bde76 | 362 | goto end; |
9f449915 | 363 | |
748bde76 | 364 | error: |
9f449915 | 365 | ret = -1; |
e358ddd5 | 366 | lttng_dynamic_pointer_array_reset(exclusions); |
9f449915 | 367 | |
748bde76 | 368 | end: |
748bde76 JI |
369 | return ret; |
370 | } | |
502bbe89 | 371 | |
d512607f JG |
372 | void warn_on_truncated_exclusion_names(const struct lttng_dynamic_pointer_array *exclusions, |
373 | int *warn) | |
502bbe89 | 374 | { |
e358ddd5 JG |
375 | size_t i; |
376 | const size_t num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
377 | ||
378 | for (i = 0; i < num_exclusions; i++) { | |
28ab034a JG |
379 | const char *const exclusion = |
380 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
502bbe89 | 381 | |
e358ddd5 | 382 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { |
28ab034a | 383 | WARN("Event exclusion \"%s\" will be truncated", exclusion); |
502bbe89 PP |
384 | *warn = 1; |
385 | } | |
386 | } | |
387 | } | |
388 | ||
f3ed775e | 389 | /* |
6181537c | 390 | * Enabling event using the lttng API. |
89476427 | 391 | * Note: in case of error only the last error code will be return. |
f3ed775e | 392 | */ |
d512607f | 393 | int enable_events(char *session_name, char *event_list) |
f3ed775e | 394 | { |
89476427 JRJ |
395 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
396 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
cd9adb8b | 397 | char *event_name, *channel_name = nullptr; |
91744e14 | 398 | struct lttng_event *ev; |
e358ddd5 JG |
399 | struct lttng_domain dom = {}; |
400 | struct lttng_dynamic_pointer_array exclusions; | |
cd9adb8b | 401 | struct lttng_userspace_probe_location *uprobe_loc = nullptr; |
f3ed775e | 402 | |
cd9adb8b | 403 | lttng_dynamic_pointer_array_init(&exclusions, nullptr); |
441c16a7 | 404 | |
91744e14 FD |
405 | ev = lttng_event_create(); |
406 | if (!ev) { | |
407 | ret = CMD_ERROR; | |
408 | goto error; | |
409 | } | |
410 | ||
53a80697 | 411 | if (opt_kernel) { |
67b58630 JG |
412 | if (opt_loglevel) { |
413 | WARN("Kernel loglevels are not supported."); | |
414 | } | |
53a80697 MD |
415 | } |
416 | ||
7d29a247 DG |
417 | /* Create lttng domain */ |
418 | if (opt_kernel) { | |
419 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 420 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 421 | } else if (opt_userspace) { |
2bdd86d4 | 422 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 423 | /* Default. */ |
8692d4e5 | 424 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
425 | } else if (opt_jul) { |
426 | dom.type = LTTNG_DOMAIN_JUL; | |
427 | /* Default. */ | |
428 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
429 | } else if (opt_log4j) { |
430 | dom.type = LTTNG_DOMAIN_LOG4J; | |
431 | /* Default. */ | |
432 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
433 | } else if (opt_python) { |
434 | dom.type = LTTNG_DOMAIN_PYTHON; | |
435 | /* Default. */ | |
436 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 437 | } else { |
3ecec76a | 438 | /* Checked by the caller. */ |
a0377dfe | 439 | abort(); |
2bdd86d4 | 440 | } |
7d29a247 | 441 | |
8b08c525 AB |
442 | if (opt_exclude) { |
443 | switch (dom.type) { | |
444 | case LTTNG_DOMAIN_KERNEL: | |
445 | case LTTNG_DOMAIN_JUL: | |
446 | case LTTNG_DOMAIN_LOG4J: | |
447 | case LTTNG_DOMAIN_PYTHON: | |
448 | ERR("Event name exclusions are not yet implemented for %s events", | |
28ab034a | 449 | lttng_domain_type_str(dom.type)); |
8b08c525 AB |
450 | ret = CMD_ERROR; |
451 | goto error; | |
452 | case LTTNG_DOMAIN_UST: | |
453 | /* Exclusions supported */ | |
454 | break; | |
455 | default: | |
a0377dfe | 456 | abort(); |
8b08c525 | 457 | } |
d5dd17fd JI |
458 | } |
459 | ||
4fd2697f FD |
460 | /* |
461 | * Adding a filter to a probe, function or userspace-probe would be | |
462 | * denied by the kernel tracer as it's not supported at the moment. We | |
463 | * do an early check here to warn the user. | |
464 | */ | |
465 | if (opt_filter && opt_kernel) { | |
466 | switch (opt_event_type) { | |
467 | case LTTNG_EVENT_ALL: | |
468 | case LTTNG_EVENT_TRACEPOINT: | |
469 | case LTTNG_EVENT_SYSCALL: | |
470 | break; | |
471 | case LTTNG_EVENT_PROBE: | |
472 | case LTTNG_EVENT_USERSPACE_PROBE: | |
473 | case LTTNG_EVENT_FUNCTION: | |
474 | ERR("Filter expressions are not supported for %s events", | |
28ab034a | 475 | get_event_type_str((lttng_event_type) opt_event_type)); |
4fd2697f FD |
476 | ret = CMD_ERROR; |
477 | goto error; | |
478 | default: | |
479 | ret = CMD_UNDEFINED; | |
480 | goto error; | |
481 | } | |
482 | } | |
483 | ||
85076754 | 484 | channel_name = opt_channel_name; |
ae856491 | 485 | |
cd80958d | 486 | handle = lttng_create_handle(session_name, &dom); |
cd9adb8b | 487 | if (handle == nullptr) { |
cd80958d DG |
488 | ret = -1; |
489 | goto error; | |
490 | } | |
1aef21b6 | 491 | |
89476427 JRJ |
492 | /* Prepare Mi */ |
493 | if (lttng_opt_mi) { | |
494 | /* Open a events element */ | |
495 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
496 | if (ret) { | |
497 | ret = CMD_ERROR; | |
498 | goto error; | |
499 | } | |
500 | } | |
501 | ||
cd80958d | 502 | if (opt_enable_all) { |
8c9ae521 | 503 | /* Default setup for enable all */ |
75e8c5ab | 504 | if (opt_kernel) { |
48a40005 | 505 | ev->type = (lttng_event_type) opt_event_type; |
91744e14 | 506 | strcpy(ev->name, "*"); |
300b8fd5 | 507 | /* kernel loglevels not implemented */ |
91744e14 | 508 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 509 | } else { |
91744e14 FD |
510 | ev->type = LTTNG_EVENT_TRACEPOINT; |
511 | strcpy(ev->name, "*"); | |
48a40005 | 512 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
300b8fd5 | 513 | if (opt_loglevel) { |
7e8f2e9c JG |
514 | int name_search_ret; |
515 | ||
a0377dfe | 516 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 517 | |
b2064f54 | 518 | if (opt_userspace) { |
7e8f2e9c JG |
519 | enum lttng_loglevel loglevel; |
520 | ||
28ab034a JG |
521 | name_search_ret = |
522 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 523 | ev->loglevel = (int) loglevel; |
b2064f54 | 524 | } else if (opt_jul) { |
7e8f2e9c JG |
525 | enum lttng_loglevel_jul loglevel; |
526 | ||
28ab034a JG |
527 | name_search_ret = |
528 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 529 | ev->loglevel = (int) loglevel; |
5cdb6027 | 530 | } else if (opt_log4j) { |
7e8f2e9c JG |
531 | enum lttng_loglevel_log4j loglevel; |
532 | ||
28ab034a JG |
533 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
534 | &loglevel); | |
7e8f2e9c | 535 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
536 | } else { |
537 | /* python domain. */ | |
7e8f2e9c JG |
538 | enum lttng_loglevel_python loglevel; |
539 | ||
28ab034a JG |
540 | name_search_ret = loglevel_python_name_to_value( |
541 | opt_loglevel, &loglevel); | |
7e8f2e9c | 542 | ev->loglevel = (int) loglevel; |
b2064f54 | 543 | } |
7e8f2e9c JG |
544 | |
545 | if (name_search_ret == -1) { | |
300b8fd5 | 546 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 547 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
548 | goto error; |
549 | } | |
22e25b71 | 550 | } else { |
a0377dfe | 551 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 552 | if (opt_userspace) { |
91744e14 | 553 | ev->loglevel = -1; |
34aa3685 | 554 | } else if (opt_jul) { |
91744e14 | 555 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 556 | } else if (opt_log4j) { |
91744e14 | 557 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 558 | } else if (opt_python) { |
91744e14 | 559 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 560 | } |
300b8fd5 | 561 | } |
75e8c5ab | 562 | } |
8c9ae521 | 563 | |
7ed70bc9 | 564 | if (opt_exclude) { |
28ab034a | 565 | ret = create_exclusion_list_and_validate("*", opt_exclude, &exclusions); |
9f449915 PP |
566 | if (ret) { |
567 | ret = CMD_ERROR; | |
7ed70bc9 JI |
568 | goto error; |
569 | } | |
502bbe89 | 570 | |
91744e14 | 571 | ev->exclusion = 1; |
28ab034a | 572 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 | 573 | } |
025faf73 | 574 | if (!opt_filter) { |
28ab034a JG |
575 | ret = lttng_enable_event_with_exclusions( |
576 | handle, | |
577 | ev, | |
578 | channel_name, | |
cd9adb8b | 579 | nullptr, |
28ab034a JG |
580 | lttng_dynamic_pointer_array_get_count(&exclusions), |
581 | (char **) exclusions.array.buffer.data); | |
025faf73 DG |
582 | if (ret < 0) { |
583 | switch (-ret) { | |
584 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
585 | WARN("Kernel events already enabled (channel %s, session %s)", | |
28ab034a JG |
586 | print_channel_name(channel_name), |
587 | session_name); | |
89476427 | 588 | warn = 1; |
025faf73 | 589 | break; |
45d5d421 CB |
590 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
591 | { | |
28ab034a JG |
592 | const char *msg = |
593 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 594 | ERR("Events: %s (channel %s, session %s)", |
28ab034a JG |
595 | msg, |
596 | print_channel_name(channel_name), | |
597 | session_name); | |
45d5d421 CB |
598 | error = 1; |
599 | break; | |
600 | } | |
025faf73 DG |
601 | default: |
602 | ERR("Events: %s (channel %s, session %s)", | |
28ab034a JG |
603 | lttng_strerror(ret), |
604 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
605 | print_raw_channel_name(channel_name) : | |
606 | print_channel_name(channel_name), | |
607 | session_name); | |
89476427 | 608 | error = 1; |
025faf73 DG |
609 | break; |
610 | } | |
611 | goto end; | |
42224349 | 612 | } |
8c9ae521 | 613 | |
025faf73 DG |
614 | switch (opt_event_type) { |
615 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 616 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 617 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
618 | |
619 | if (!exclusion_string) { | |
620 | PERROR("Cannot allocate exclusion_string"); | |
621 | error = 1; | |
622 | goto end; | |
623 | } | |
9c48cab3 | 624 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
625 | lttng_domain_type_str(dom.type), |
626 | exclusion_string, | |
627 | print_channel_name(channel_name), | |
628 | opt_loglevel); | |
9c48cab3 | 629 | free(exclusion_string); |
025faf73 | 630 | } else { |
e358ddd5 | 631 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
632 | |
633 | if (!exclusion_string) { | |
634 | PERROR("Cannot allocate exclusion_string"); | |
635 | error = 1; | |
636 | goto end; | |
637 | } | |
9c48cab3 | 638 | MSG("All %s tracepoints%s are enabled in channel %s", |
28ab034a JG |
639 | lttng_domain_type_str(dom.type), |
640 | exclusion_string, | |
641 | print_channel_name(channel_name)); | |
9c48cab3 | 642 | free(exclusion_string); |
025faf73 DG |
643 | } |
644 | break; | |
645 | case LTTNG_EVENT_SYSCALL: | |
646 | if (opt_kernel) { | |
6e911cad | 647 | MSG("All %s system calls are enabled in channel %s", |
28ab034a JG |
648 | lttng_domain_type_str(dom.type), |
649 | print_channel_name(channel_name)); | |
025faf73 DG |
650 | } |
651 | break; | |
652 | case LTTNG_EVENT_ALL: | |
67b58630 | 653 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 654 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
655 | |
656 | if (!exclusion_string) { | |
657 | PERROR("Cannot allocate exclusion_string"); | |
658 | error = 1; | |
659 | goto end; | |
660 | } | |
9c48cab3 | 661 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
662 | lttng_domain_type_str(dom.type), |
663 | exclusion_string, | |
664 | print_channel_name(channel_name), | |
665 | opt_loglevel); | |
9c48cab3 | 666 | free(exclusion_string); |
025faf73 | 667 | } else { |
e358ddd5 | 668 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
669 | |
670 | if (!exclusion_string) { | |
671 | PERROR("Cannot allocate exclusion_string"); | |
672 | error = 1; | |
673 | goto end; | |
674 | } | |
9c48cab3 | 675 | MSG("All %s events%s are enabled in channel %s", |
28ab034a JG |
676 | lttng_domain_type_str(dom.type), |
677 | exclusion_string, | |
678 | print_channel_name(channel_name)); | |
9c48cab3 | 679 | free(exclusion_string); |
025faf73 DG |
680 | } |
681 | break; | |
682 | default: | |
683 | /* | |
684 | * We should not be here since lttng_enable_event should have | |
685 | * failed on the event type. | |
686 | */ | |
687 | goto error; | |
57064ada | 688 | } |
f3ed775e | 689 | } |
89476427 | 690 | |
025faf73 | 691 | if (opt_filter) { |
28ab034a JG |
692 | command_ret = lttng_enable_event_with_exclusions( |
693 | handle, | |
694 | ev, | |
695 | channel_name, | |
696 | opt_filter, | |
697 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
698 | (char **) exclusions.array.buffer.data); | |
89476427 JRJ |
699 | if (command_ret < 0) { |
700 | switch (-command_ret) { | |
16363652 | 701 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 702 | WARN("Filter on all events is already enabled" |
28ab034a JG |
703 | " (channel %s, session %s)", |
704 | print_channel_name(channel_name), | |
705 | session_name); | |
89476427 | 706 | warn = 1; |
16363652 | 707 | break; |
45d5d421 CB |
708 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
709 | { | |
28ab034a JG |
710 | const char *msg = |
711 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 712 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
713 | msg, |
714 | print_channel_name(channel_name), | |
715 | session_name, | |
716 | opt_filter); | |
45d5d421 CB |
717 | error = 1; |
718 | break; | |
719 | } | |
16363652 | 720 | default: |
85076754 | 721 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
722 | lttng_strerror(command_ret), |
723 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
724 | print_raw_channel_name(channel_name) : | |
725 | print_channel_name(channel_name), | |
726 | session_name, | |
727 | opt_filter); | |
89476427 | 728 | error = 1; |
16363652 DG |
729 | break; |
730 | } | |
89476427 | 731 | error_holder = command_ret; |
16363652 | 732 | } else { |
91744e14 | 733 | ev->filter = 1; |
16363652 DG |
734 | MSG("Filter '%s' successfully set", opt_filter); |
735 | } | |
736 | } | |
89476427 JRJ |
737 | |
738 | if (lttng_opt_mi) { | |
739 | /* The wildcard * is used for kernel and ust domain to | |
740 | * represent ALL. We copy * in event name to force the wildcard use | |
741 | * for kernel domain | |
742 | * | |
743 | * Note: this is strictly for semantic and printing while in | |
744 | * machine interface mode. | |
745 | */ | |
91744e14 | 746 | strcpy(ev->name, "*"); |
89476427 JRJ |
747 | |
748 | /* If we reach here the events are enabled */ | |
749 | if (!error && !warn) { | |
91744e14 | 750 | ev->enabled = 1; |
89476427 | 751 | } else { |
91744e14 | 752 | ev->enabled = 0; |
89476427 JRJ |
753 | success = 0; |
754 | } | |
91744e14 | 755 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
756 | if (ret) { |
757 | ret = CMD_ERROR; | |
758 | goto error; | |
759 | } | |
760 | ||
761 | /* print exclusion */ | |
e358ddd5 | 762 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
763 | if (ret) { |
764 | ret = CMD_ERROR; | |
765 | goto error; | |
766 | } | |
767 | ||
768 | /* Success ? */ | |
28ab034a JG |
769 | ret = mi_lttng_writer_write_element_bool( |
770 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
771 | if (ret) { |
772 | ret = CMD_ERROR; | |
773 | goto error; | |
774 | } | |
775 | ||
776 | /* Close event element */ | |
777 | ret = mi_lttng_writer_close_element(writer); | |
778 | if (ret) { | |
779 | ret = CMD_ERROR; | |
780 | goto error; | |
781 | } | |
782 | } | |
783 | ||
8c9ae521 | 784 | goto end; |
f3ed775e DG |
785 | } |
786 | ||
787 | /* Strip event list */ | |
5b915816 | 788 | event_name = strtok(event_list, ","); |
cd9adb8b | 789 | while (event_name != nullptr) { |
6181537c | 790 | /* Copy name and type of the event */ |
91744e14 FD |
791 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
792 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
48a40005 | 793 | ev->type = (lttng_event_type) opt_event_type; |
6181537c | 794 | |
f3ed775e DG |
795 | /* Kernel tracer action */ |
796 | if (opt_kernel) { | |
797 | DBG("Enabling kernel event %s for channel %s", | |
28ab034a JG |
798 | event_name, |
799 | print_channel_name(channel_name)); | |
f3ed775e DG |
800 | |
801 | switch (opt_event_type) { | |
28ab034a | 802 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
29c62722 | 803 | /* If event name differs from *, select tracepoint. */ |
5c7248cd | 804 | if (strcmp(ev->name, "*") != 0) { |
91744e14 | 805 | ev->type = LTTNG_EVENT_TRACEPOINT; |
29c62722 MD |
806 | } |
807 | break; | |
e6ddca71 | 808 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 809 | break; |
7d29a247 | 810 | case LTTNG_EVENT_PROBE: |
91744e14 | 811 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 812 | if (ret) { |
cf0e5467 | 813 | ERR("Unable to parse probe options"); |
91744e14 | 814 | ret = CMD_ERROR; |
0d63dd19 DG |
815 | goto error; |
816 | } | |
f3ed775e | 817 | break; |
dcabc190 | 818 | case LTTNG_EVENT_USERSPACE_PROBE: |
a0377dfe | 819 | LTTNG_ASSERT(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
0c4e727b JR |
820 | |
821 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 822 | if (ret) { |
36aa2f64 FD |
823 | switch (ret) { |
824 | case CMD_UNSUPPORTED: | |
825 | /* | |
826 | * Error message describing | |
827 | * what is not supported was | |
828 | * printed in the function. | |
829 | */ | |
830 | break; | |
831 | case CMD_ERROR: | |
832 | default: | |
833 | ERR("Unable to parse userspace probe options"); | |
834 | break; | |
835 | } | |
dcabc190 FD |
836 | goto error; |
837 | } | |
0c4e727b JR |
838 | |
839 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
840 | if (ret) { | |
841 | WARN("Failed to set probe location on event"); | |
842 | ret = CMD_ERROR; | |
843 | goto error; | |
844 | } | |
845 | ||
846 | /* Ownership of the uprobe location was transferred to the event. */ | |
cd9adb8b | 847 | uprobe_loc = nullptr; |
dcabc190 | 848 | break; |
f3ed775e | 849 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 850 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 851 | if (ret) { |
8f0d098b | 852 | ERR("Unable to parse function probe options"); |
91744e14 | 853 | ret = CMD_ERROR; |
8f0d098b MD |
854 | goto error; |
855 | } | |
856 | break; | |
a54bd42d | 857 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 858 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 859 | break; |
f3ed775e | 860 | default: |
1ab1ea0b | 861 | ret = CMD_UNDEFINED; |
f3ed775e DG |
862 | goto error; |
863 | } | |
0cda4f28 | 864 | |
0cda4f28 | 865 | /* kernel loglevels not implemented */ |
91744e14 | 866 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
28ab034a JG |
867 | } else if (opt_userspace) { /* User-space tracer action */ |
868 | DBG("Enabling UST event %s for channel %s, loglevel %s", | |
869 | event_name, | |
870 | print_channel_name(channel_name), | |
871 | opt_loglevel ?: "<all>"); | |
2bdd86d4 MD |
872 | |
873 | switch (opt_event_type) { | |
28ab034a | 874 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
2bdd86d4 MD |
875 | /* Fall-through */ |
876 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 877 | /* Copy name and type of the event */ |
91744e14 FD |
878 | ev->type = LTTNG_EVENT_TRACEPOINT; |
879 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
880 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
881 | break; |
882 | case LTTNG_EVENT_PROBE: | |
883 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 884 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 885 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 886 | default: |
cc62c0c0 | 887 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 888 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
889 | goto error; |
890 | } | |
0cda4f28 | 891 | |
7ed70bc9 | 892 | if (opt_exclude) { |
91744e14 | 893 | ev->exclusion = 1; |
28ab034a JG |
894 | if (opt_event_type != LTTNG_EVENT_ALL && |
895 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
d5dd17fd JI |
896 | ERR("Exclusion option can only be used with tracepoint events"); |
897 | ret = CMD_ERROR; | |
898 | goto error; | |
899 | } | |
e358ddd5 JG |
900 | /* Free previously allocated items. */ |
901 | lttng_dynamic_pointer_array_reset(&exclusions); | |
9f449915 | 902 | ret = create_exclusion_list_and_validate( |
28ab034a | 903 | event_name, opt_exclude, &exclusions); |
9f449915 PP |
904 | if (ret) { |
905 | ret = CMD_ERROR; | |
7ed70bc9 JI |
906 | goto error; |
907 | } | |
502bbe89 | 908 | |
28ab034a | 909 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 JI |
910 | } |
911 | ||
48a40005 | 912 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
ed7f4083 | 913 | if (opt_loglevel) { |
7e8f2e9c | 914 | enum lttng_loglevel loglevel; |
28ab034a JG |
915 | const int name_search_ret = |
916 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c JG |
917 | |
918 | if (name_search_ret == -1) { | |
8005f29a | 919 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 920 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
921 | goto error; |
922 | } | |
7e8f2e9c JG |
923 | |
924 | ev->loglevel = (int) loglevel; | |
22e25b71 | 925 | } else { |
91744e14 | 926 | ev->loglevel = -1; |
ed7f4083 | 927 | } |
0e115563 | 928 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 | 929 | if (opt_event_type != LTTNG_EVENT_ALL && |
28ab034a | 930 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
5cdb6027 | 931 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
932 | ret = CMD_UNSUPPORTED; |
933 | goto error; | |
934 | } | |
b2064f54 | 935 | |
48a40005 | 936 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
b2064f54 | 937 | if (opt_loglevel) { |
7e8f2e9c JG |
938 | int name_search_ret; |
939 | ||
5cdb6027 | 940 | if (opt_jul) { |
7e8f2e9c JG |
941 | enum lttng_loglevel_jul loglevel; |
942 | ||
28ab034a JG |
943 | name_search_ret = |
944 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 945 | ev->loglevel = (int) loglevel; |
5cdb6027 | 946 | } else if (opt_log4j) { |
7e8f2e9c JG |
947 | enum lttng_loglevel_log4j loglevel; |
948 | ||
28ab034a JG |
949 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
950 | &loglevel); | |
7e8f2e9c | 951 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
952 | } else { |
953 | /* python domain. */ | |
7e8f2e9c JG |
954 | enum lttng_loglevel_python loglevel; |
955 | ||
28ab034a JG |
956 | name_search_ret = loglevel_python_name_to_value( |
957 | opt_loglevel, &loglevel); | |
7e8f2e9c | 958 | ev->loglevel = (int) loglevel; |
5cdb6027 | 959 | } |
7e8f2e9c JG |
960 | |
961 | if (name_search_ret) { | |
b2064f54 DG |
962 | ERR("Unknown loglevel %s", opt_loglevel); |
963 | ret = -LTTNG_ERR_INVALID; | |
964 | goto error; | |
965 | } | |
966 | } else { | |
5cdb6027 | 967 | if (opt_jul) { |
91744e14 | 968 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 969 | } else if (opt_log4j) { |
91744e14 | 970 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 971 | } else if (opt_python) { |
91744e14 | 972 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 973 | } |
b2064f54 | 974 | } |
91744e14 FD |
975 | ev->type = LTTNG_EVENT_TRACEPOINT; |
976 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
977 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 978 | } else { |
a0377dfe | 979 | abort(); |
f3ed775e DG |
980 | } |
981 | ||
025faf73 | 982 | if (!opt_filter) { |
9c48cab3 JI |
983 | char *exclusion_string; |
984 | ||
28ab034a JG |
985 | command_ret = lttng_enable_event_with_exclusions( |
986 | handle, | |
987 | ev, | |
988 | channel_name, | |
cd9adb8b | 989 | nullptr, |
28ab034a JG |
990 | lttng_dynamic_pointer_array_get_count(&exclusions), |
991 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 992 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
993 | if (!exclusion_string) { |
994 | PERROR("Cannot allocate exclusion_string"); | |
995 | error = 1; | |
996 | goto end; | |
997 | } | |
89476427 | 998 | if (command_ret < 0) { |
025faf73 | 999 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1000 | switch (-command_ret) { |
025faf73 | 1001 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1002 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
28ab034a JG |
1003 | event_name, |
1004 | exclusion_string, | |
1005 | print_channel_name(channel_name), | |
1006 | session_name); | |
89476427 | 1007 | warn = 1; |
025faf73 | 1008 | break; |
45d5d421 CB |
1009 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1010 | { | |
28ab034a JG |
1011 | const char *msg = |
1012 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1013 | ERR("Event %s%s: %s (channel %s, session %s)", | |
1014 | event_name, | |
1015 | exclusion_string, | |
1016 | msg, | |
1017 | print_channel_name(channel_name), | |
1018 | session_name); | |
45d5d421 CB |
1019 | error = 1; |
1020 | break; | |
1021 | } | |
dcabc190 FD |
1022 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1023 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
28ab034a JG |
1024 | event_name, |
1025 | print_channel_name(channel_name), | |
1026 | session_name); | |
dcabc190 FD |
1027 | error = 1; |
1028 | break; | |
025faf73 | 1029 | default: |
28ab034a JG |
1030 | ERR("Event %s%s: %s (channel %s, session %s)", |
1031 | event_name, | |
1032 | exclusion_string, | |
1033 | lttng_strerror(command_ret), | |
1034 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1035 | print_raw_channel_name(channel_name) : | |
1036 | print_channel_name(channel_name), | |
1037 | session_name); | |
89476427 | 1038 | error = 1; |
025faf73 DG |
1039 | break; |
1040 | } | |
89476427 | 1041 | error_holder = command_ret; |
025faf73 | 1042 | } else { |
8274eeba AB |
1043 | switch (dom.type) { |
1044 | case LTTNG_DOMAIN_KERNEL: | |
1045 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1046 | MSG("%s event %s%s created in channel %s", |
28ab034a JG |
1047 | lttng_domain_type_str(dom.type), |
1048 | event_name, | |
1049 | exclusion_string, | |
1050 | print_channel_name(channel_name)); | |
8274eeba AB |
1051 | break; |
1052 | case LTTNG_DOMAIN_JUL: | |
1053 | case LTTNG_DOMAIN_LOG4J: | |
1054 | case LTTNG_DOMAIN_PYTHON: | |
1055 | /* | |
1056 | * Don't print the default channel | |
1057 | * name for agent domains. | |
1058 | */ | |
895707da | 1059 | MSG("%s event %s%s enabled", |
28ab034a JG |
1060 | lttng_domain_type_str(dom.type), |
1061 | event_name, | |
1062 | exclusion_string); | |
8274eeba AB |
1063 | break; |
1064 | default: | |
a0377dfe | 1065 | abort(); |
49ceaa70 | 1066 | } |
42224349 | 1067 | } |
9c48cab3 | 1068 | free(exclusion_string); |
6181537c | 1069 | } |
025faf73 DG |
1070 | |
1071 | if (opt_filter) { | |
9c48cab3 JI |
1072 | char *exclusion_string; |
1073 | ||
89476427 | 1074 | /* Filter present */ |
91744e14 | 1075 | ev->filter = 1; |
89476427 | 1076 | |
28ab034a JG |
1077 | command_ret = lttng_enable_event_with_exclusions( |
1078 | handle, | |
1079 | ev, | |
1080 | channel_name, | |
1081 | opt_filter, | |
1082 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
1083 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 1084 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
1085 | if (!exclusion_string) { |
1086 | PERROR("Cannot allocate exclusion_string"); | |
1087 | error = 1; | |
1088 | goto end; | |
1089 | } | |
89476427 JRJ |
1090 | if (command_ret < 0) { |
1091 | switch (-command_ret) { | |
7671f53c | 1092 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1093 | WARN("Filter on event %s%s is already enabled" |
28ab034a JG |
1094 | " (channel %s, session %s)", |
1095 | event_name, | |
1096 | exclusion_string, | |
1097 | print_channel_name(channel_name), | |
1098 | session_name); | |
89476427 | 1099 | warn = 1; |
7671f53c | 1100 | break; |
45d5d421 CB |
1101 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1102 | { | |
28ab034a JG |
1103 | const char *msg = |
1104 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1105 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", | |
1106 | ev->name, | |
1107 | exclusion_string, | |
1108 | msg, | |
1109 | print_channel_name(channel_name), | |
1110 | session_name, | |
1111 | opt_filter); | |
45d5d421 CB |
1112 | error = 1; |
1113 | break; | |
1114 | } | |
7671f53c | 1115 | default: |
28ab034a JG |
1116 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", |
1117 | ev->name, | |
1118 | exclusion_string, | |
1119 | lttng_strerror(command_ret), | |
1120 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1121 | print_raw_channel_name(channel_name) : | |
1122 | print_channel_name(channel_name), | |
1123 | session_name, | |
1124 | opt_filter); | |
89476427 | 1125 | error = 1; |
7671f53c CB |
1126 | break; |
1127 | } | |
89476427 JRJ |
1128 | error_holder = command_ret; |
1129 | ||
16363652 | 1130 | } else { |
9c48cab3 | 1131 | MSG("Event %s%s: Filter '%s' successfully set", |
28ab034a JG |
1132 | event_name, |
1133 | exclusion_string, | |
1134 | opt_filter); | |
53a80697 | 1135 | } |
9c48cab3 | 1136 | free(exclusion_string); |
53a80697 | 1137 | } |
6181537c | 1138 | |
89476427 JRJ |
1139 | if (lttng_opt_mi) { |
1140 | if (command_ret) { | |
1141 | success = 0; | |
91744e14 | 1142 | ev->enabled = 0; |
89476427 | 1143 | } else { |
91744e14 | 1144 | ev->enabled = 1; |
89476427 JRJ |
1145 | } |
1146 | ||
91744e14 | 1147 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1148 | if (ret) { |
1149 | ret = CMD_ERROR; | |
1150 | goto error; | |
1151 | } | |
1152 | ||
1153 | /* print exclusion */ | |
e358ddd5 | 1154 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
1155 | if (ret) { |
1156 | ret = CMD_ERROR; | |
1157 | goto error; | |
1158 | } | |
1159 | ||
1160 | /* Success ? */ | |
28ab034a JG |
1161 | ret = mi_lttng_writer_write_element_bool( |
1162 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
1163 | if (ret) { |
1164 | ret = CMD_ERROR; | |
1165 | goto end; | |
1166 | } | |
1167 | ||
1168 | /* Close event element */ | |
1169 | ret = mi_lttng_writer_close_element(writer); | |
1170 | if (ret) { | |
1171 | ret = CMD_ERROR; | |
1172 | goto end; | |
1173 | } | |
1174 | } | |
1175 | ||
f3ed775e | 1176 | /* Next event */ |
cd9adb8b | 1177 | event_name = strtok(nullptr, ","); |
89476427 JRJ |
1178 | /* Reset warn, error and success */ |
1179 | success = 1; | |
f3ed775e DG |
1180 | } |
1181 | ||
8c9ae521 | 1182 | end: |
89476427 JRJ |
1183 | /* Close Mi */ |
1184 | if (lttng_opt_mi) { | |
1185 | /* Close events element */ | |
1186 | ret = mi_lttng_writer_close_element(writer); | |
1187 | if (ret) { | |
1188 | ret = CMD_ERROR; | |
1189 | goto error; | |
1190 | } | |
1191 | } | |
f3ed775e | 1192 | error: |
ae856491 DG |
1193 | if (warn) { |
1194 | ret = CMD_WARNING; | |
1195 | } | |
89476427 JRJ |
1196 | if (error) { |
1197 | ret = CMD_ERROR; | |
1198 | } | |
cd80958d | 1199 | lttng_destroy_handle(handle); |
e358ddd5 | 1200 | lttng_dynamic_pointer_array_reset(&exclusions); |
0c4e727b | 1201 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1202 | |
89476427 JRJ |
1203 | /* Overwrite ret with error_holder if there was an actual error with |
1204 | * enabling an event. | |
1205 | */ | |
1206 | ret = error_holder ? error_holder : ret; | |
1207 | ||
91744e14 | 1208 | lttng_event_destroy(ev); |
f3ed775e DG |
1209 | return ret; |
1210 | } | |
1211 | ||
d512607f JG |
1212 | } /* namespace */ |
1213 | ||
1214 | int validate_exclusion_list(const char *event_name, | |
1215 | const struct lttng_dynamic_pointer_array *exclusions) | |
1216 | { | |
1217 | int ret; | |
1218 | ||
1219 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
1220 | if (!strutils_is_star_glob_pattern(event_name)) { | |
1221 | ERR("Event %s: Exclusions can only be used with a globbing pattern", event_name); | |
1222 | goto error; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * If the event name is a star-at-end only globbing pattern, | |
1227 | * then we can validate the individual exclusions. Otherwise | |
1228 | * all exclusions are passed to the session daemon. | |
1229 | */ | |
1230 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
1231 | size_t i, num_exclusions; | |
1232 | ||
1233 | num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
1234 | ||
1235 | for (i = 0; i < num_exclusions; i++) { | |
1236 | const char *exclusion = | |
1237 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, | |
1238 | i); | |
1239 | ||
1240 | if (!strutils_is_star_glob_pattern(exclusion) || | |
1241 | strutils_is_star_at_the_end_only_glob_pattern(exclusion)) { | |
1242 | ret = check_exclusion_subsets(event_name, exclusion); | |
1243 | if (ret) { | |
1244 | goto error; | |
1245 | } | |
1246 | } | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | ret = 0; | |
1251 | goto end; | |
1252 | ||
1253 | error: | |
1254 | ret = -1; | |
1255 | ||
1256 | end: | |
1257 | return ret; | |
1258 | } | |
1259 | ||
f3ed775e | 1260 | /* |
6181537c | 1261 | * Add event to trace session |
f3ed775e DG |
1262 | */ |
1263 | int cmd_enable_events(int argc, const char **argv) | |
1264 | { | |
89476427 | 1265 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1266 | static poptContext pc; |
cd9adb8b JG |
1267 | char *session_name = nullptr; |
1268 | char *event_list = nullptr; | |
1269 | const char *arg_event_list = nullptr; | |
1270 | const char *leftover = nullptr; | |
de044b7a | 1271 | int event_type = -1; |
f3ed775e | 1272 | |
cd9adb8b | 1273 | pc = poptGetContext(nullptr, argc, argv, long_options, 0); |
f3ed775e DG |
1274 | poptReadDefaultConfig(pc, 0); |
1275 | ||
1276 | /* Default event type */ | |
7a3d1328 | 1277 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1278 | |
1279 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1280 | switch (opt) { | |
1281 | case OPT_HELP: | |
4ba92f18 | 1282 | SHOW_HELP(); |
f3ed775e | 1283 | goto end; |
f3ed775e | 1284 | case OPT_TRACEPOINT: |
e6ddca71 | 1285 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1286 | break; |
cf0e5467 | 1287 | case OPT_PROBE: |
7d29a247 | 1288 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1289 | break; |
dcabc190 FD |
1290 | case OPT_USERSPACE_PROBE: |
1291 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1292 | break; | |
f3ed775e DG |
1293 | case OPT_FUNCTION: |
1294 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1295 | break; |
a54bd42d MD |
1296 | case OPT_SYSCALL: |
1297 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1298 | break; |
eeac7d46 MD |
1299 | case OPT_USERSPACE: |
1300 | opt_userspace = 1; | |
eeac7d46 | 1301 | break; |
0cda4f28 | 1302 | case OPT_LOGLEVEL: |
8005f29a | 1303 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1304 | opt_loglevel = poptGetOptArg(pc); |
1305 | break; | |
1306 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1307 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1308 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1309 | break; |
679b4943 SM |
1310 | case OPT_LIST_OPTIONS: |
1311 | list_cmd_options(stdout, long_options); | |
679b4943 | 1312 | goto end; |
53a80697 MD |
1313 | case OPT_FILTER: |
1314 | break; | |
fac3366c JI |
1315 | case OPT_EXCLUDE: |
1316 | break; | |
f3ed775e | 1317 | default: |
f3ed775e DG |
1318 | ret = CMD_UNDEFINED; |
1319 | goto end; | |
1320 | } | |
de044b7a DG |
1321 | |
1322 | /* Validate event type. Multiple event type are not supported. */ | |
1323 | if (event_type == -1) { | |
1324 | event_type = opt_event_type; | |
1325 | } else { | |
1326 | if (event_type != opt_event_type) { | |
1327 | ERR("Multiple event type not supported."); | |
1328 | ret = CMD_ERROR; | |
1329 | goto end; | |
1330 | } | |
1331 | } | |
f3ed775e DG |
1332 | } |
1333 | ||
3ecec76a | 1334 | ret = print_missing_or_multiple_domains( |
28ab034a | 1335 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python, true); |
3ecec76a PP |
1336 | if (ret) { |
1337 | ret = CMD_ERROR; | |
1338 | goto end; | |
1339 | } | |
1340 | ||
89476427 JRJ |
1341 | /* Mi check */ |
1342 | if (lttng_opt_mi) { | |
1343 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1344 | if (!writer) { | |
1345 | ret = -LTTNG_ERR_NOMEM; | |
1346 | goto end; | |
1347 | } | |
1348 | ||
1349 | /* Open command element */ | |
28ab034a | 1350 | ret = mi_lttng_writer_command_open(writer, mi_lttng_element_command_enable_event); |
89476427 JRJ |
1351 | if (ret) { |
1352 | ret = CMD_ERROR; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | /* Open output element */ | |
28ab034a | 1357 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_command_output); |
89476427 JRJ |
1358 | if (ret) { |
1359 | ret = CMD_ERROR; | |
1360 | goto end; | |
1361 | } | |
1362 | } | |
1363 | ||
5b915816 | 1364 | arg_event_list = poptGetArg(pc); |
cd9adb8b | 1365 | if (arg_event_list == nullptr && opt_enable_all == 0) { |
5b915816 | 1366 | ERR("Missing event name(s)."); |
ca1c3607 | 1367 | ret = CMD_ERROR; |
f3ed775e DG |
1368 | goto end; |
1369 | } | |
1370 | ||
5b915816 MJ |
1371 | if (opt_enable_all == 0) { |
1372 | event_list = strdup(arg_event_list); | |
cd9adb8b | 1373 | if (event_list == nullptr) { |
5b915816 MJ |
1374 | PERROR("Failed to copy event name(s)"); |
1375 | ret = CMD_ERROR; | |
1376 | goto end; | |
1377 | } | |
1378 | } | |
1379 | ||
68c7f6e5 JD |
1380 | leftover = poptGetArg(pc); |
1381 | if (leftover) { | |
1382 | ERR("Unknown argument: %s", leftover); | |
1383 | ret = CMD_ERROR; | |
1384 | goto end; | |
1385 | } | |
1386 | ||
cd80958d DG |
1387 | if (!opt_session_name) { |
1388 | session_name = get_session_name(); | |
cd9adb8b | 1389 | if (session_name == nullptr) { |
89476427 JRJ |
1390 | command_ret = CMD_ERROR; |
1391 | success = 0; | |
1392 | goto mi_closing; | |
cd80958d DG |
1393 | } |
1394 | } else { | |
1395 | session_name = opt_session_name; | |
1396 | } | |
1397 | ||
5b915816 | 1398 | command_ret = enable_events(session_name, event_list); |
89476427 JRJ |
1399 | if (command_ret) { |
1400 | success = 0; | |
1401 | goto mi_closing; | |
1402 | } | |
1403 | ||
1404 | mi_closing: | |
1405 | /* Mi closing */ | |
1406 | if (lttng_opt_mi) { | |
1407 | /* Close output element */ | |
1408 | ret = mi_lttng_writer_close_element(writer); | |
1409 | if (ret) { | |
1410 | ret = CMD_ERROR; | |
1411 | goto end; | |
1412 | } | |
1413 | ||
28ab034a JG |
1414 | ret = mi_lttng_writer_write_element_bool( |
1415 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
1416 | if (ret) { |
1417 | ret = CMD_ERROR; | |
1418 | goto end; | |
1419 | } | |
1420 | ||
1421 | /* Command element close */ | |
1422 | ret = mi_lttng_writer_command_close(writer); | |
1423 | if (ret) { | |
1424 | ret = CMD_ERROR; | |
1425 | goto end; | |
1426 | } | |
1427 | } | |
f3ed775e DG |
1428 | |
1429 | end: | |
89476427 JRJ |
1430 | /* Mi clean-up */ |
1431 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1432 | /* Preserve original error code */ | |
1433 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1434 | } | |
1435 | ||
cd9adb8b | 1436 | if (opt_session_name == nullptr) { |
cd80958d DG |
1437 | free(session_name); |
1438 | } | |
1439 | ||
5b915816 MJ |
1440 | free(event_list); |
1441 | ||
89476427 JRJ |
1442 | /* Overwrite ret if an error occurred in enable_events */ |
1443 | ret = command_ret ? command_ret : ret; | |
1444 | ||
ca1c3607 | 1445 | poptFreeContext(pc); |
f3ed775e DG |
1446 | return ret; |
1447 | } |