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> | |
8884bbc1 | 11 | #include <common/make-unique-wrapper.hpp> |
28ab034a JG |
12 | #include <common/sessiond-comm/sessiond-comm.hpp> |
13 | #include <common/string-utils/string-utils.hpp> | |
14 | #include <common/utils.hpp> | |
15 | ||
16 | #include <ctype.h> | |
17 | #include <inttypes.h> | |
f3ed775e DG |
18 | #include <popt.h> |
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
f3ed775e DG |
21 | #include <sys/stat.h> |
22 | #include <sys/types.h> | |
23 | #include <unistd.h> | |
f3ed775e | 24 | |
89476427 | 25 | /* Mi dependancy */ |
28ab034a JG |
26 | #include "../command.hpp" |
27 | #include "../loglevel.hpp" | |
28 | #include "../uprobe.hpp" | |
29 | ||
c9e313bc | 30 | #include <common/mi-lttng.hpp> |
89476427 | 31 | |
c9e313bc SM |
32 | #include <lttng/domain-internal.hpp> |
33 | #include <lttng/event-internal.hpp> | |
7e8f2e9c | 34 | |
8ab7c0d9 | 35 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
28ab034a | 36 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" |
8ab7c0d9 MD |
37 | #endif |
38 | ||
d512607f | 39 | namespace { |
8884bbc1 JG |
40 | void _mi_lttng_writer_deleter_func(mi_writer *writer) |
41 | { | |
42 | if (writer && mi_lttng_writer_destroy(writer)) { | |
43 | LTTNG_THROW_ERROR("Failed to destroy mi_writer instance"); | |
44 | } | |
45 | } | |
46 | ||
47 | using mi_writer_uptr = std::unique_ptr< | |
48 | mi_writer, | |
49 | lttng::memory::create_deleter_class<mi_writer, _mi_lttng_writer_deleter_func>::deleter>; | |
d512607f JG |
50 | |
51 | int opt_event_type; | |
52 | const char *opt_loglevel; | |
53 | int opt_loglevel_type; | |
54 | int opt_kernel; | |
55 | char *opt_session_name; | |
56 | int opt_userspace; | |
57 | int opt_jul; | |
58 | int opt_log4j; | |
59 | int opt_python; | |
60 | int opt_enable_all; | |
61 | char *opt_probe; | |
62 | char *opt_userspace_probe; | |
63 | char *opt_function; | |
64 | char *opt_channel_name; | |
65 | char *opt_filter; | |
66 | char *opt_exclude; | |
f3ed775e | 67 | |
8884bbc1 JG |
68 | struct lttng_handle *handle; |
69 | mi_writer_uptr writer; | |
70 | ||
4fc83d94 PP |
71 | #ifdef LTTNG_EMBED_HELP |
72 | static const char help_msg[] = | |
73 | #include <lttng-enable-event.1.h> | |
28ab034a | 74 | ; |
4fc83d94 PP |
75 | #endif |
76 | ||
f3ed775e DG |
77 | enum { |
78 | OPT_HELP = 1, | |
f3ed775e | 79 | OPT_TRACEPOINT, |
cf0e5467 | 80 | OPT_PROBE, |
dcabc190 | 81 | OPT_USERSPACE_PROBE, |
f3ed775e | 82 | OPT_FUNCTION, |
a54bd42d | 83 | OPT_SYSCALL, |
eeac7d46 | 84 | OPT_USERSPACE, |
0cda4f28 MD |
85 | OPT_LOGLEVEL, |
86 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 87 | OPT_LIST_OPTIONS, |
53a80697 | 88 | OPT_FILTER, |
fac3366c | 89 | OPT_EXCLUDE, |
f3ed775e DG |
90 | }; |
91 | ||
d512607f | 92 | struct poptOption long_options[] = { |
f3ed775e | 93 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
cd9adb8b JG |
94 | { "help", 'h', POPT_ARG_NONE, nullptr, OPT_HELP, nullptr, nullptr }, |
95 | { "session", 's', POPT_ARG_STRING, &opt_session_name, 0, nullptr, nullptr }, | |
96 | { "all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, nullptr, nullptr }, | |
97 | { "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, nullptr, nullptr }, | |
98 | { "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, nullptr, nullptr }, | |
99 | { "userspace", 'u', POPT_ARG_NONE, nullptr, OPT_USERSPACE, nullptr, nullptr }, | |
100 | { "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, nullptr, nullptr }, | |
101 | { "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, nullptr, nullptr }, | |
102 | { "python", 'p', POPT_ARG_VAL, &opt_python, 1, nullptr, nullptr }, | |
103 | { "tracepoint", 0, POPT_ARG_NONE, nullptr, OPT_TRACEPOINT, nullptr, nullptr }, | |
104 | { "probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, nullptr, nullptr }, | |
105 | { "userspace-probe", | |
106 | 0, | |
107 | POPT_ARG_STRING, | |
108 | &opt_userspace_probe, | |
109 | OPT_USERSPACE_PROBE, | |
110 | nullptr, | |
111 | nullptr }, | |
112 | { "function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, nullptr, nullptr }, | |
113 | { "syscall", 0, POPT_ARG_NONE, nullptr, OPT_SYSCALL, nullptr, nullptr }, | |
114 | { "loglevel", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL, nullptr, nullptr }, | |
115 | { "loglevel-only", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL_ONLY, nullptr, nullptr }, | |
116 | { "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr }, | |
117 | { "filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, nullptr, nullptr }, | |
118 | { "exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, nullptr, nullptr }, | |
119 | { nullptr, 0, 0, nullptr, 0, nullptr, nullptr } | |
f3ed775e DG |
120 | }; |
121 | ||
0d63dd19 | 122 | /* |
6181537c | 123 | * Parse probe options. |
0d63dd19 | 124 | */ |
d512607f | 125 | int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 126 | { |
49d4e302 JRJ |
127 | int ret = CMD_SUCCESS; |
128 | int match; | |
8ff0bbd0 | 129 | char s_hex[19]; |
28ab034a | 130 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
131 | char name[LTTNG_SYMBOL_NAME_LEN]; |
132 | ||
cd9adb8b | 133 | if (opt == nullptr) { |
49d4e302 | 134 | ret = CMD_ERROR; |
8f0d098b | 135 | goto end; |
0d63dd19 DG |
136 | } |
137 | ||
138 | /* Check for symbol+offset */ | |
28ab034a JG |
139 | match = sscanf(opt, |
140 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
141 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", | |
142 | name, | |
143 | s_hex); | |
49d4e302 | 144 | if (match == 2) { |
7d29a247 | 145 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 146 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 147 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 148 | if (*s_hex == '\0') { |
8ff0bbd0 | 149 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 150 | ret = CMD_ERROR; |
8f0d098b | 151 | goto end; |
0d63dd19 | 152 | } |
cd9adb8b | 153 | ev->attr.probe.offset = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 154 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 155 | ev->attr.probe.addr = 0; |
8f0d098b MD |
156 | goto end; |
157 | } | |
158 | ||
159 | /* Check for symbol */ | |
88c91427 | 160 | if (isalpha(name[0]) || name[0] == '_') { |
28ab034a | 161 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", name); |
49d4e302 | 162 | if (match == 1) { |
8f0d098b | 163 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 164 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
165 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
166 | ev->attr.probe.offset = 0; | |
167 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
168 | ev->attr.probe.addr = 0; | |
169 | goto end; | |
170 | } | |
0d63dd19 DG |
171 | } |
172 | ||
173 | /* Check for address */ | |
49d4e302 JRJ |
174 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
175 | if (match > 0) { | |
531be721 FD |
176 | /* |
177 | * Return an error if the first character of the tentative | |
178 | * address is NULL or not a digit. It can be "0" if the address | |
179 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
180 | */ | |
181 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
182 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 183 | ret = CMD_ERROR; |
8f0d098b | 184 | goto end; |
0d63dd19 | 185 | } |
cd9adb8b | 186 | ev->attr.probe.addr = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 187 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
188 | ev->attr.probe.offset = 0; |
189 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 190 | goto end; |
0d63dd19 DG |
191 | } |
192 | ||
193 | /* No match */ | |
49d4e302 | 194 | ret = CMD_ERROR; |
0d63dd19 | 195 | |
8f0d098b | 196 | end: |
0d63dd19 DG |
197 | return ret; |
198 | } | |
199 | ||
d512607f | 200 | const char *print_channel_name(const char *name) |
85076754 | 201 | { |
28ab034a | 202 | return name ?: DEFAULT_CHANNEL_NAME; |
85076754 MD |
203 | } |
204 | ||
d512607f | 205 | const char *print_raw_channel_name(const char *name) |
85076754 | 206 | { |
28ab034a | 207 | return name ?: "<default>"; |
85076754 MD |
208 | } |
209 | ||
89476427 JRJ |
210 | /* |
211 | * Mi print exlcusion list | |
212 | */ | |
d512607f | 213 | int mi_print_exclusion(const struct lttng_dynamic_pointer_array *exclusions) |
89476427 | 214 | { |
e358ddd5 JG |
215 | int ret; |
216 | size_t i; | |
217 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); | |
89476427 | 218 | |
a0377dfe | 219 | LTTNG_ASSERT(writer); |
89476427 JRJ |
220 | |
221 | if (count == 0) { | |
222 | ret = 0; | |
223 | goto end; | |
224 | } | |
e358ddd5 | 225 | |
8884bbc1 | 226 | ret = mi_lttng_writer_open_element(writer.get(), config_element_exclusions); |
89476427 JRJ |
227 | if (ret) { |
228 | goto end; | |
229 | } | |
230 | ||
231 | for (i = 0; i < count; i++) { | |
28ab034a JG |
232 | const char *exclusion = |
233 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 234 | |
28ab034a | 235 | ret = mi_lttng_writer_write_element_string( |
8884bbc1 | 236 | writer.get(), config_element_exclusion, exclusion); |
89476427 JRJ |
237 | if (ret) { |
238 | goto end; | |
239 | } | |
240 | } | |
241 | ||
242 | /* Close exclusions element */ | |
8884bbc1 | 243 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
244 | |
245 | end: | |
246 | return ret; | |
247 | } | |
248 | ||
9c48cab3 JI |
249 | /* |
250 | * Return allocated string for pretty-printing exclusion names. | |
251 | */ | |
d512607f | 252 | char *print_exclusions(const struct lttng_dynamic_pointer_array *exclusions) |
9c48cab3 JI |
253 | { |
254 | int length = 0; | |
e358ddd5 | 255 | size_t i; |
bfe36393 | 256 | const char preamble[] = " excluding "; |
9c48cab3 | 257 | char *ret; |
e358ddd5 | 258 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); |
9c48cab3 JI |
259 | |
260 | if (count == 0) { | |
261 | return strdup(""); | |
262 | } | |
263 | ||
e358ddd5 | 264 | /* Calculate total required length. */ |
9c48cab3 | 265 | for (i = 0; i < count; i++) { |
28ab034a JG |
266 | const char *exclusion = |
267 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 JG |
268 | |
269 | length += strlen(exclusion) + 4; | |
9c48cab3 JI |
270 | } |
271 | ||
bfe36393 | 272 | length += sizeof(preamble); |
64803277 | 273 | ret = calloc<char>(length); |
fd591b18 | 274 | if (!ret) { |
cd9adb8b | 275 | return nullptr; |
fd591b18 | 276 | } |
e358ddd5 | 277 | |
9c48cab3 JI |
278 | strncpy(ret, preamble, length); |
279 | for (i = 0; i < count; i++) { | |
28ab034a JG |
280 | const char *exclusion = |
281 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 282 | |
9f449915 | 283 | strcat(ret, "\""); |
e358ddd5 | 284 | strcat(ret, exclusion); |
9f449915 | 285 | strcat(ret, "\""); |
9c48cab3 | 286 | if (i != count - 1) { |
9f449915 | 287 | strcat(ret, ", "); |
9c48cab3 JI |
288 | } |
289 | } | |
89476427 | 290 | |
9c48cab3 JI |
291 | return ret; |
292 | } | |
293 | ||
d512607f | 294 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 295 | { |
9f449915 PP |
296 | bool warn = false; |
297 | int ret = 0; | |
298 | const char *e = event_name; | |
299 | const char *x = exclusion; | |
300 | ||
301 | /* Scan both the excluder and the event letter by letter */ | |
302 | while (true) { | |
303 | if (*e == '\\') { | |
304 | if (*x != *e) { | |
305 | warn = true; | |
306 | goto end; | |
307 | } | |
748bde76 | 308 | |
9f449915 PP |
309 | e++; |
310 | x++; | |
311 | goto cmp_chars; | |
312 | } | |
313 | ||
314 | if (*x == '*') { | |
315 | /* Event is a subset of the excluder */ | |
316 | ERR("Event %s: %s excludes all events from %s", | |
28ab034a JG |
317 | event_name, |
318 | exclusion, | |
319 | event_name); | |
9f449915 PP |
320 | goto error; |
321 | } | |
322 | ||
323 | if (*e == '*') { | |
324 | /* | |
325 | * Reached the end of the event name before the | |
326 | * end of the exclusion: this is valid. | |
327 | */ | |
328 | goto end; | |
329 | } | |
330 | ||
28ab034a | 331 | cmp_chars: |
9f449915 PP |
332 | if (*x != *e) { |
333 | warn = true; | |
334 | break; | |
335 | } | |
336 | ||
337 | x++; | |
338 | e++; | |
748bde76 JI |
339 | } |
340 | ||
9f449915 | 341 | goto end; |
748bde76 | 342 | |
9f449915 PP |
343 | error: |
344 | ret = -1; | |
748bde76 | 345 | |
9f449915 PP |
346 | end: |
347 | if (warn) { | |
348 | WARN("Event %s: %s does not exclude any events from %s", | |
28ab034a JG |
349 | event_name, |
350 | exclusion, | |
351 | event_name); | |
9f449915 | 352 | } |
748bde76 | 353 | |
9f449915 PP |
354 | return ret; |
355 | } | |
356 | ||
d512607f JG |
357 | int create_exclusion_list_and_validate(const char *event_name, |
358 | const char *exclusions_arg, | |
359 | struct lttng_dynamic_pointer_array *exclusions) | |
b03a81fb SM |
360 | { |
361 | int ret = 0; | |
b03a81fb SM |
362 | |
363 | /* Split exclusions. */ | |
e358ddd5 JG |
364 | ret = strutils_split(exclusions_arg, ',', true, exclusions); |
365 | if (ret < 0) { | |
b03a81fb SM |
366 | goto error; |
367 | } | |
368 | ||
28ab034a | 369 | if (validate_exclusion_list(event_name, exclusions) != 0) { |
b03a81fb SM |
370 | goto error; |
371 | } | |
372 | ||
748bde76 | 373 | goto end; |
9f449915 | 374 | |
748bde76 | 375 | error: |
9f449915 | 376 | ret = -1; |
e358ddd5 | 377 | lttng_dynamic_pointer_array_reset(exclusions); |
9f449915 | 378 | |
748bde76 | 379 | end: |
748bde76 JI |
380 | return ret; |
381 | } | |
502bbe89 | 382 | |
d512607f JG |
383 | void warn_on_truncated_exclusion_names(const struct lttng_dynamic_pointer_array *exclusions, |
384 | int *warn) | |
502bbe89 | 385 | { |
e358ddd5 JG |
386 | size_t i; |
387 | const size_t num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
388 | ||
389 | for (i = 0; i < num_exclusions; i++) { | |
28ab034a JG |
390 | const char *const exclusion = |
391 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
502bbe89 | 392 | |
e358ddd5 | 393 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { |
28ab034a | 394 | WARN("Event exclusion \"%s\" will be truncated", exclusion); |
502bbe89 PP |
395 | *warn = 1; |
396 | } | |
397 | } | |
398 | } | |
399 | ||
f3ed775e | 400 | /* |
6181537c | 401 | * Enabling event using the lttng API. |
89476427 | 402 | * Note: in case of error only the last error code will be return. |
f3ed775e | 403 | */ |
d512607f | 404 | int enable_events(char *session_name, char *event_list) |
f3ed775e | 405 | { |
89476427 JRJ |
406 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
407 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
cd9adb8b | 408 | char *event_name, *channel_name = nullptr; |
91744e14 | 409 | struct lttng_event *ev; |
e358ddd5 JG |
410 | struct lttng_domain dom = {}; |
411 | struct lttng_dynamic_pointer_array exclusions; | |
cd9adb8b | 412 | struct lttng_userspace_probe_location *uprobe_loc = nullptr; |
f3ed775e | 413 | |
cd9adb8b | 414 | lttng_dynamic_pointer_array_init(&exclusions, nullptr); |
441c16a7 | 415 | |
91744e14 FD |
416 | ev = lttng_event_create(); |
417 | if (!ev) { | |
418 | ret = CMD_ERROR; | |
419 | goto error; | |
420 | } | |
421 | ||
53a80697 | 422 | if (opt_kernel) { |
67b58630 JG |
423 | if (opt_loglevel) { |
424 | WARN("Kernel loglevels are not supported."); | |
425 | } | |
53a80697 MD |
426 | } |
427 | ||
7d29a247 DG |
428 | /* Create lttng domain */ |
429 | if (opt_kernel) { | |
430 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 431 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 432 | } else if (opt_userspace) { |
2bdd86d4 | 433 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 434 | /* Default. */ |
8692d4e5 | 435 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
436 | } else if (opt_jul) { |
437 | dom.type = LTTNG_DOMAIN_JUL; | |
438 | /* Default. */ | |
439 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
440 | } else if (opt_log4j) { |
441 | dom.type = LTTNG_DOMAIN_LOG4J; | |
442 | /* Default. */ | |
443 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
444 | } else if (opt_python) { |
445 | dom.type = LTTNG_DOMAIN_PYTHON; | |
446 | /* Default. */ | |
447 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 448 | } else { |
3ecec76a | 449 | /* Checked by the caller. */ |
a0377dfe | 450 | abort(); |
2bdd86d4 | 451 | } |
7d29a247 | 452 | |
8b08c525 AB |
453 | if (opt_exclude) { |
454 | switch (dom.type) { | |
455 | case LTTNG_DOMAIN_KERNEL: | |
456 | case LTTNG_DOMAIN_JUL: | |
457 | case LTTNG_DOMAIN_LOG4J: | |
458 | case LTTNG_DOMAIN_PYTHON: | |
459 | ERR("Event name exclusions are not yet implemented for %s events", | |
28ab034a | 460 | lttng_domain_type_str(dom.type)); |
8b08c525 AB |
461 | ret = CMD_ERROR; |
462 | goto error; | |
463 | case LTTNG_DOMAIN_UST: | |
464 | /* Exclusions supported */ | |
465 | break; | |
466 | default: | |
a0377dfe | 467 | abort(); |
8b08c525 | 468 | } |
d5dd17fd JI |
469 | } |
470 | ||
4fd2697f FD |
471 | /* |
472 | * Adding a filter to a probe, function or userspace-probe would be | |
473 | * denied by the kernel tracer as it's not supported at the moment. We | |
474 | * do an early check here to warn the user. | |
475 | */ | |
476 | if (opt_filter && opt_kernel) { | |
477 | switch (opt_event_type) { | |
478 | case LTTNG_EVENT_ALL: | |
479 | case LTTNG_EVENT_TRACEPOINT: | |
480 | case LTTNG_EVENT_SYSCALL: | |
481 | break; | |
482 | case LTTNG_EVENT_PROBE: | |
483 | case LTTNG_EVENT_USERSPACE_PROBE: | |
484 | case LTTNG_EVENT_FUNCTION: | |
485 | ERR("Filter expressions are not supported for %s events", | |
28ab034a | 486 | get_event_type_str((lttng_event_type) opt_event_type)); |
4fd2697f FD |
487 | ret = CMD_ERROR; |
488 | goto error; | |
489 | default: | |
490 | ret = CMD_UNDEFINED; | |
491 | goto error; | |
492 | } | |
493 | } | |
494 | ||
85076754 | 495 | channel_name = opt_channel_name; |
ae856491 | 496 | |
cd80958d | 497 | handle = lttng_create_handle(session_name, &dom); |
cd9adb8b | 498 | if (handle == nullptr) { |
cd80958d DG |
499 | ret = -1; |
500 | goto error; | |
501 | } | |
1aef21b6 | 502 | |
89476427 JRJ |
503 | /* Prepare Mi */ |
504 | if (lttng_opt_mi) { | |
505 | /* Open a events element */ | |
8884bbc1 | 506 | ret = mi_lttng_writer_open_element(writer.get(), config_element_events); |
89476427 JRJ |
507 | if (ret) { |
508 | ret = CMD_ERROR; | |
509 | goto error; | |
510 | } | |
511 | } | |
512 | ||
cd80958d | 513 | if (opt_enable_all) { |
8c9ae521 | 514 | /* Default setup for enable all */ |
75e8c5ab | 515 | if (opt_kernel) { |
48a40005 | 516 | ev->type = (lttng_event_type) opt_event_type; |
91744e14 | 517 | strcpy(ev->name, "*"); |
300b8fd5 | 518 | /* kernel loglevels not implemented */ |
91744e14 | 519 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 520 | } else { |
91744e14 FD |
521 | ev->type = LTTNG_EVENT_TRACEPOINT; |
522 | strcpy(ev->name, "*"); | |
48a40005 | 523 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
300b8fd5 | 524 | if (opt_loglevel) { |
7e8f2e9c JG |
525 | int name_search_ret; |
526 | ||
a0377dfe | 527 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 528 | |
b2064f54 | 529 | if (opt_userspace) { |
7e8f2e9c JG |
530 | enum lttng_loglevel loglevel; |
531 | ||
28ab034a JG |
532 | name_search_ret = |
533 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 534 | ev->loglevel = (int) loglevel; |
b2064f54 | 535 | } else if (opt_jul) { |
7e8f2e9c JG |
536 | enum lttng_loglevel_jul loglevel; |
537 | ||
28ab034a JG |
538 | name_search_ret = |
539 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 540 | ev->loglevel = (int) loglevel; |
5cdb6027 | 541 | } else if (opt_log4j) { |
7e8f2e9c JG |
542 | enum lttng_loglevel_log4j loglevel; |
543 | ||
28ab034a JG |
544 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
545 | &loglevel); | |
7e8f2e9c | 546 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
547 | } else { |
548 | /* python domain. */ | |
7e8f2e9c JG |
549 | enum lttng_loglevel_python loglevel; |
550 | ||
28ab034a JG |
551 | name_search_ret = loglevel_python_name_to_value( |
552 | opt_loglevel, &loglevel); | |
7e8f2e9c | 553 | ev->loglevel = (int) loglevel; |
b2064f54 | 554 | } |
7e8f2e9c JG |
555 | |
556 | if (name_search_ret == -1) { | |
300b8fd5 | 557 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 558 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
559 | goto error; |
560 | } | |
22e25b71 | 561 | } else { |
a0377dfe | 562 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 563 | if (opt_userspace) { |
91744e14 | 564 | ev->loglevel = -1; |
34aa3685 | 565 | } else if (opt_jul) { |
91744e14 | 566 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 567 | } else if (opt_log4j) { |
91744e14 | 568 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 569 | } else if (opt_python) { |
91744e14 | 570 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 571 | } |
300b8fd5 | 572 | } |
75e8c5ab | 573 | } |
8c9ae521 | 574 | |
7ed70bc9 | 575 | if (opt_exclude) { |
28ab034a | 576 | ret = create_exclusion_list_and_validate("*", opt_exclude, &exclusions); |
9f449915 PP |
577 | if (ret) { |
578 | ret = CMD_ERROR; | |
7ed70bc9 JI |
579 | goto error; |
580 | } | |
502bbe89 | 581 | |
91744e14 | 582 | ev->exclusion = 1; |
28ab034a | 583 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 | 584 | } |
025faf73 | 585 | if (!opt_filter) { |
28ab034a JG |
586 | ret = lttng_enable_event_with_exclusions( |
587 | handle, | |
588 | ev, | |
589 | channel_name, | |
cd9adb8b | 590 | nullptr, |
28ab034a JG |
591 | lttng_dynamic_pointer_array_get_count(&exclusions), |
592 | (char **) exclusions.array.buffer.data); | |
025faf73 DG |
593 | if (ret < 0) { |
594 | switch (-ret) { | |
595 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
596 | WARN("Kernel events already enabled (channel %s, session %s)", | |
28ab034a JG |
597 | print_channel_name(channel_name), |
598 | session_name); | |
89476427 | 599 | warn = 1; |
025faf73 | 600 | break; |
45d5d421 CB |
601 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
602 | { | |
28ab034a JG |
603 | const char *msg = |
604 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 605 | ERR("Events: %s (channel %s, session %s)", |
28ab034a JG |
606 | msg, |
607 | print_channel_name(channel_name), | |
608 | session_name); | |
45d5d421 CB |
609 | error = 1; |
610 | break; | |
611 | } | |
025faf73 DG |
612 | default: |
613 | ERR("Events: %s (channel %s, session %s)", | |
28ab034a JG |
614 | lttng_strerror(ret), |
615 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
616 | print_raw_channel_name(channel_name) : | |
617 | print_channel_name(channel_name), | |
618 | session_name); | |
89476427 | 619 | error = 1; |
025faf73 DG |
620 | break; |
621 | } | |
622 | goto end; | |
42224349 | 623 | } |
8c9ae521 | 624 | |
025faf73 DG |
625 | switch (opt_event_type) { |
626 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 627 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 628 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
629 | |
630 | if (!exclusion_string) { | |
631 | PERROR("Cannot allocate exclusion_string"); | |
632 | error = 1; | |
633 | goto end; | |
634 | } | |
9c48cab3 | 635 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
636 | lttng_domain_type_str(dom.type), |
637 | exclusion_string, | |
638 | print_channel_name(channel_name), | |
639 | opt_loglevel); | |
9c48cab3 | 640 | free(exclusion_string); |
025faf73 | 641 | } else { |
e358ddd5 | 642 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
643 | |
644 | if (!exclusion_string) { | |
645 | PERROR("Cannot allocate exclusion_string"); | |
646 | error = 1; | |
647 | goto end; | |
648 | } | |
9c48cab3 | 649 | MSG("All %s tracepoints%s are enabled in channel %s", |
28ab034a JG |
650 | lttng_domain_type_str(dom.type), |
651 | exclusion_string, | |
652 | print_channel_name(channel_name)); | |
9c48cab3 | 653 | free(exclusion_string); |
025faf73 DG |
654 | } |
655 | break; | |
656 | case LTTNG_EVENT_SYSCALL: | |
657 | if (opt_kernel) { | |
6e911cad | 658 | MSG("All %s system calls are enabled in channel %s", |
28ab034a JG |
659 | lttng_domain_type_str(dom.type), |
660 | print_channel_name(channel_name)); | |
025faf73 DG |
661 | } |
662 | break; | |
663 | case LTTNG_EVENT_ALL: | |
67b58630 | 664 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 665 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
666 | |
667 | if (!exclusion_string) { | |
668 | PERROR("Cannot allocate exclusion_string"); | |
669 | error = 1; | |
670 | goto end; | |
671 | } | |
9c48cab3 | 672 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
673 | lttng_domain_type_str(dom.type), |
674 | exclusion_string, | |
675 | print_channel_name(channel_name), | |
676 | opt_loglevel); | |
9c48cab3 | 677 | free(exclusion_string); |
025faf73 | 678 | } else { |
e358ddd5 | 679 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
680 | |
681 | if (!exclusion_string) { | |
682 | PERROR("Cannot allocate exclusion_string"); | |
683 | error = 1; | |
684 | goto end; | |
685 | } | |
9c48cab3 | 686 | MSG("All %s events%s are enabled in channel %s", |
28ab034a JG |
687 | lttng_domain_type_str(dom.type), |
688 | exclusion_string, | |
689 | print_channel_name(channel_name)); | |
9c48cab3 | 690 | free(exclusion_string); |
025faf73 DG |
691 | } |
692 | break; | |
693 | default: | |
694 | /* | |
695 | * We should not be here since lttng_enable_event should have | |
696 | * failed on the event type. | |
697 | */ | |
698 | goto error; | |
57064ada | 699 | } |
f3ed775e | 700 | } |
89476427 | 701 | |
025faf73 | 702 | if (opt_filter) { |
28ab034a JG |
703 | command_ret = lttng_enable_event_with_exclusions( |
704 | handle, | |
705 | ev, | |
706 | channel_name, | |
707 | opt_filter, | |
708 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
709 | (char **) exclusions.array.buffer.data); | |
89476427 JRJ |
710 | if (command_ret < 0) { |
711 | switch (-command_ret) { | |
16363652 | 712 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 713 | WARN("Filter on all events is already enabled" |
28ab034a JG |
714 | " (channel %s, session %s)", |
715 | print_channel_name(channel_name), | |
716 | session_name); | |
89476427 | 717 | warn = 1; |
16363652 | 718 | break; |
45d5d421 CB |
719 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
720 | { | |
28ab034a JG |
721 | const char *msg = |
722 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 723 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
724 | msg, |
725 | print_channel_name(channel_name), | |
726 | session_name, | |
727 | opt_filter); | |
45d5d421 CB |
728 | error = 1; |
729 | break; | |
730 | } | |
16363652 | 731 | default: |
85076754 | 732 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
733 | lttng_strerror(command_ret), |
734 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
735 | print_raw_channel_name(channel_name) : | |
736 | print_channel_name(channel_name), | |
737 | session_name, | |
738 | opt_filter); | |
89476427 | 739 | error = 1; |
16363652 DG |
740 | break; |
741 | } | |
89476427 | 742 | error_holder = command_ret; |
16363652 | 743 | } else { |
91744e14 | 744 | ev->filter = 1; |
16363652 DG |
745 | MSG("Filter '%s' successfully set", opt_filter); |
746 | } | |
747 | } | |
89476427 JRJ |
748 | |
749 | if (lttng_opt_mi) { | |
750 | /* The wildcard * is used for kernel and ust domain to | |
751 | * represent ALL. We copy * in event name to force the wildcard use | |
752 | * for kernel domain | |
753 | * | |
754 | * Note: this is strictly for semantic and printing while in | |
755 | * machine interface mode. | |
756 | */ | |
91744e14 | 757 | strcpy(ev->name, "*"); |
89476427 JRJ |
758 | |
759 | /* If we reach here the events are enabled */ | |
760 | if (!error && !warn) { | |
91744e14 | 761 | ev->enabled = 1; |
89476427 | 762 | } else { |
91744e14 | 763 | ev->enabled = 0; |
89476427 JRJ |
764 | success = 0; |
765 | } | |
8884bbc1 | 766 | ret = mi_lttng_event(writer.get(), ev, 1, handle->domain.type); |
89476427 JRJ |
767 | if (ret) { |
768 | ret = CMD_ERROR; | |
769 | goto error; | |
770 | } | |
771 | ||
772 | /* print exclusion */ | |
e358ddd5 | 773 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
774 | if (ret) { |
775 | ret = CMD_ERROR; | |
776 | goto error; | |
777 | } | |
778 | ||
779 | /* Success ? */ | |
28ab034a | 780 | ret = mi_lttng_writer_write_element_bool( |
8884bbc1 | 781 | writer.get(), mi_lttng_element_command_success, success); |
89476427 JRJ |
782 | if (ret) { |
783 | ret = CMD_ERROR; | |
784 | goto error; | |
785 | } | |
786 | ||
787 | /* Close event element */ | |
8884bbc1 | 788 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
789 | if (ret) { |
790 | ret = CMD_ERROR; | |
791 | goto error; | |
792 | } | |
793 | } | |
794 | ||
8c9ae521 | 795 | goto end; |
f3ed775e DG |
796 | } |
797 | ||
798 | /* Strip event list */ | |
5b915816 | 799 | event_name = strtok(event_list, ","); |
cd9adb8b | 800 | while (event_name != nullptr) { |
6181537c | 801 | /* Copy name and type of the event */ |
91744e14 FD |
802 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
803 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
48a40005 | 804 | ev->type = (lttng_event_type) opt_event_type; |
6181537c | 805 | |
f3ed775e DG |
806 | /* Kernel tracer action */ |
807 | if (opt_kernel) { | |
808 | DBG("Enabling kernel event %s for channel %s", | |
28ab034a JG |
809 | event_name, |
810 | print_channel_name(channel_name)); | |
f3ed775e DG |
811 | |
812 | switch (opt_event_type) { | |
28ab034a | 813 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
29c62722 | 814 | /* If event name differs from *, select tracepoint. */ |
5c7248cd | 815 | if (strcmp(ev->name, "*") != 0) { |
91744e14 | 816 | ev->type = LTTNG_EVENT_TRACEPOINT; |
29c62722 MD |
817 | } |
818 | break; | |
e6ddca71 | 819 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 820 | break; |
7d29a247 | 821 | case LTTNG_EVENT_PROBE: |
91744e14 | 822 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 823 | if (ret) { |
cf0e5467 | 824 | ERR("Unable to parse probe options"); |
91744e14 | 825 | ret = CMD_ERROR; |
0d63dd19 DG |
826 | goto error; |
827 | } | |
f3ed775e | 828 | break; |
dcabc190 | 829 | case LTTNG_EVENT_USERSPACE_PROBE: |
a0377dfe | 830 | LTTNG_ASSERT(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
0c4e727b JR |
831 | |
832 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 833 | if (ret) { |
36aa2f64 FD |
834 | switch (ret) { |
835 | case CMD_UNSUPPORTED: | |
836 | /* | |
837 | * Error message describing | |
838 | * what is not supported was | |
839 | * printed in the function. | |
840 | */ | |
841 | break; | |
842 | case CMD_ERROR: | |
843 | default: | |
844 | ERR("Unable to parse userspace probe options"); | |
845 | break; | |
846 | } | |
dcabc190 FD |
847 | goto error; |
848 | } | |
0c4e727b JR |
849 | |
850 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
851 | if (ret) { | |
852 | WARN("Failed to set probe location on event"); | |
853 | ret = CMD_ERROR; | |
854 | goto error; | |
855 | } | |
856 | ||
857 | /* Ownership of the uprobe location was transferred to the event. */ | |
cd9adb8b | 858 | uprobe_loc = nullptr; |
dcabc190 | 859 | break; |
f3ed775e | 860 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 861 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 862 | if (ret) { |
8f0d098b | 863 | ERR("Unable to parse function probe options"); |
91744e14 | 864 | ret = CMD_ERROR; |
8f0d098b MD |
865 | goto error; |
866 | } | |
867 | break; | |
a54bd42d | 868 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 869 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 870 | break; |
f3ed775e | 871 | default: |
1ab1ea0b | 872 | ret = CMD_UNDEFINED; |
f3ed775e DG |
873 | goto error; |
874 | } | |
0cda4f28 | 875 | |
0cda4f28 | 876 | /* kernel loglevels not implemented */ |
91744e14 | 877 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
28ab034a JG |
878 | } else if (opt_userspace) { /* User-space tracer action */ |
879 | DBG("Enabling UST event %s for channel %s, loglevel %s", | |
880 | event_name, | |
881 | print_channel_name(channel_name), | |
882 | opt_loglevel ?: "<all>"); | |
2bdd86d4 MD |
883 | |
884 | switch (opt_event_type) { | |
28ab034a | 885 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
2bdd86d4 MD |
886 | /* Fall-through */ |
887 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 888 | /* Copy name and type of the event */ |
91744e14 FD |
889 | ev->type = LTTNG_EVENT_TRACEPOINT; |
890 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
891 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
892 | break; |
893 | case LTTNG_EVENT_PROBE: | |
894 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 895 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 896 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 897 | default: |
cc62c0c0 | 898 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 899 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
900 | goto error; |
901 | } | |
0cda4f28 | 902 | |
7ed70bc9 | 903 | if (opt_exclude) { |
91744e14 | 904 | ev->exclusion = 1; |
28ab034a JG |
905 | if (opt_event_type != LTTNG_EVENT_ALL && |
906 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
d5dd17fd JI |
907 | ERR("Exclusion option can only be used with tracepoint events"); |
908 | ret = CMD_ERROR; | |
909 | goto error; | |
910 | } | |
e358ddd5 JG |
911 | /* Free previously allocated items. */ |
912 | lttng_dynamic_pointer_array_reset(&exclusions); | |
9f449915 | 913 | ret = create_exclusion_list_and_validate( |
28ab034a | 914 | event_name, opt_exclude, &exclusions); |
9f449915 PP |
915 | if (ret) { |
916 | ret = CMD_ERROR; | |
7ed70bc9 JI |
917 | goto error; |
918 | } | |
502bbe89 | 919 | |
28ab034a | 920 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 JI |
921 | } |
922 | ||
48a40005 | 923 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
ed7f4083 | 924 | if (opt_loglevel) { |
7e8f2e9c | 925 | enum lttng_loglevel loglevel; |
28ab034a JG |
926 | const int name_search_ret = |
927 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c JG |
928 | |
929 | if (name_search_ret == -1) { | |
8005f29a | 930 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 931 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
932 | goto error; |
933 | } | |
7e8f2e9c JG |
934 | |
935 | ev->loglevel = (int) loglevel; | |
22e25b71 | 936 | } else { |
91744e14 | 937 | ev->loglevel = -1; |
ed7f4083 | 938 | } |
0e115563 | 939 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 | 940 | if (opt_event_type != LTTNG_EVENT_ALL && |
28ab034a | 941 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
5cdb6027 | 942 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
943 | ret = CMD_UNSUPPORTED; |
944 | goto error; | |
945 | } | |
b2064f54 | 946 | |
48a40005 | 947 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
b2064f54 | 948 | if (opt_loglevel) { |
7e8f2e9c JG |
949 | int name_search_ret; |
950 | ||
5cdb6027 | 951 | if (opt_jul) { |
7e8f2e9c JG |
952 | enum lttng_loglevel_jul loglevel; |
953 | ||
28ab034a JG |
954 | name_search_ret = |
955 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 956 | ev->loglevel = (int) loglevel; |
5cdb6027 | 957 | } else if (opt_log4j) { |
7e8f2e9c JG |
958 | enum lttng_loglevel_log4j loglevel; |
959 | ||
28ab034a JG |
960 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
961 | &loglevel); | |
7e8f2e9c | 962 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
963 | } else { |
964 | /* python domain. */ | |
7e8f2e9c JG |
965 | enum lttng_loglevel_python loglevel; |
966 | ||
28ab034a JG |
967 | name_search_ret = loglevel_python_name_to_value( |
968 | opt_loglevel, &loglevel); | |
7e8f2e9c | 969 | ev->loglevel = (int) loglevel; |
5cdb6027 | 970 | } |
7e8f2e9c JG |
971 | |
972 | if (name_search_ret) { | |
b2064f54 DG |
973 | ERR("Unknown loglevel %s", opt_loglevel); |
974 | ret = -LTTNG_ERR_INVALID; | |
975 | goto error; | |
976 | } | |
977 | } else { | |
5cdb6027 | 978 | if (opt_jul) { |
91744e14 | 979 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 980 | } else if (opt_log4j) { |
91744e14 | 981 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 982 | } else if (opt_python) { |
91744e14 | 983 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 984 | } |
b2064f54 | 985 | } |
91744e14 FD |
986 | ev->type = LTTNG_EVENT_TRACEPOINT; |
987 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
988 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 989 | } else { |
a0377dfe | 990 | abort(); |
f3ed775e DG |
991 | } |
992 | ||
025faf73 | 993 | if (!opt_filter) { |
9c48cab3 JI |
994 | char *exclusion_string; |
995 | ||
28ab034a JG |
996 | command_ret = lttng_enable_event_with_exclusions( |
997 | handle, | |
998 | ev, | |
999 | channel_name, | |
cd9adb8b | 1000 | nullptr, |
28ab034a JG |
1001 | lttng_dynamic_pointer_array_get_count(&exclusions), |
1002 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 1003 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
1004 | if (!exclusion_string) { |
1005 | PERROR("Cannot allocate exclusion_string"); | |
1006 | error = 1; | |
1007 | goto end; | |
1008 | } | |
89476427 | 1009 | if (command_ret < 0) { |
025faf73 | 1010 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1011 | switch (-command_ret) { |
025faf73 | 1012 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1013 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
28ab034a JG |
1014 | event_name, |
1015 | exclusion_string, | |
1016 | print_channel_name(channel_name), | |
1017 | session_name); | |
89476427 | 1018 | warn = 1; |
025faf73 | 1019 | break; |
45d5d421 CB |
1020 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1021 | { | |
28ab034a JG |
1022 | const char *msg = |
1023 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1024 | ERR("Event %s%s: %s (channel %s, session %s)", | |
1025 | event_name, | |
1026 | exclusion_string, | |
1027 | msg, | |
1028 | print_channel_name(channel_name), | |
1029 | session_name); | |
45d5d421 CB |
1030 | error = 1; |
1031 | break; | |
1032 | } | |
dcabc190 FD |
1033 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1034 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
28ab034a JG |
1035 | event_name, |
1036 | print_channel_name(channel_name), | |
1037 | session_name); | |
dcabc190 FD |
1038 | error = 1; |
1039 | break; | |
025faf73 | 1040 | default: |
28ab034a JG |
1041 | ERR("Event %s%s: %s (channel %s, session %s)", |
1042 | event_name, | |
1043 | exclusion_string, | |
1044 | lttng_strerror(command_ret), | |
1045 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1046 | print_raw_channel_name(channel_name) : | |
1047 | print_channel_name(channel_name), | |
1048 | session_name); | |
89476427 | 1049 | error = 1; |
025faf73 DG |
1050 | break; |
1051 | } | |
89476427 | 1052 | error_holder = command_ret; |
025faf73 | 1053 | } else { |
8274eeba AB |
1054 | switch (dom.type) { |
1055 | case LTTNG_DOMAIN_KERNEL: | |
1056 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1057 | MSG("%s event %s%s created in channel %s", |
28ab034a JG |
1058 | lttng_domain_type_str(dom.type), |
1059 | event_name, | |
1060 | exclusion_string, | |
1061 | print_channel_name(channel_name)); | |
8274eeba AB |
1062 | break; |
1063 | case LTTNG_DOMAIN_JUL: | |
1064 | case LTTNG_DOMAIN_LOG4J: | |
1065 | case LTTNG_DOMAIN_PYTHON: | |
1066 | /* | |
1067 | * Don't print the default channel | |
1068 | * name for agent domains. | |
1069 | */ | |
895707da | 1070 | MSG("%s event %s%s enabled", |
28ab034a JG |
1071 | lttng_domain_type_str(dom.type), |
1072 | event_name, | |
1073 | exclusion_string); | |
8274eeba AB |
1074 | break; |
1075 | default: | |
a0377dfe | 1076 | abort(); |
49ceaa70 | 1077 | } |
42224349 | 1078 | } |
9c48cab3 | 1079 | free(exclusion_string); |
6181537c | 1080 | } |
025faf73 DG |
1081 | |
1082 | if (opt_filter) { | |
9c48cab3 JI |
1083 | char *exclusion_string; |
1084 | ||
89476427 | 1085 | /* Filter present */ |
91744e14 | 1086 | ev->filter = 1; |
89476427 | 1087 | |
28ab034a JG |
1088 | command_ret = lttng_enable_event_with_exclusions( |
1089 | handle, | |
1090 | ev, | |
1091 | channel_name, | |
1092 | opt_filter, | |
1093 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
1094 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 1095 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
1096 | if (!exclusion_string) { |
1097 | PERROR("Cannot allocate exclusion_string"); | |
1098 | error = 1; | |
1099 | goto end; | |
1100 | } | |
89476427 JRJ |
1101 | if (command_ret < 0) { |
1102 | switch (-command_ret) { | |
7671f53c | 1103 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1104 | WARN("Filter on event %s%s is already enabled" |
28ab034a JG |
1105 | " (channel %s, session %s)", |
1106 | event_name, | |
1107 | exclusion_string, | |
1108 | print_channel_name(channel_name), | |
1109 | session_name); | |
89476427 | 1110 | warn = 1; |
7671f53c | 1111 | break; |
45d5d421 CB |
1112 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1113 | { | |
28ab034a JG |
1114 | const char *msg = |
1115 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1116 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", | |
1117 | ev->name, | |
1118 | exclusion_string, | |
1119 | msg, | |
1120 | print_channel_name(channel_name), | |
1121 | session_name, | |
1122 | opt_filter); | |
45d5d421 CB |
1123 | error = 1; |
1124 | break; | |
1125 | } | |
7671f53c | 1126 | default: |
28ab034a JG |
1127 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", |
1128 | ev->name, | |
1129 | exclusion_string, | |
1130 | lttng_strerror(command_ret), | |
1131 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1132 | print_raw_channel_name(channel_name) : | |
1133 | print_channel_name(channel_name), | |
1134 | session_name, | |
1135 | opt_filter); | |
89476427 | 1136 | error = 1; |
7671f53c CB |
1137 | break; |
1138 | } | |
89476427 JRJ |
1139 | error_holder = command_ret; |
1140 | ||
16363652 | 1141 | } else { |
9c48cab3 | 1142 | MSG("Event %s%s: Filter '%s' successfully set", |
28ab034a JG |
1143 | event_name, |
1144 | exclusion_string, | |
1145 | opt_filter); | |
53a80697 | 1146 | } |
9c48cab3 | 1147 | free(exclusion_string); |
53a80697 | 1148 | } |
6181537c | 1149 | |
89476427 JRJ |
1150 | if (lttng_opt_mi) { |
1151 | if (command_ret) { | |
1152 | success = 0; | |
91744e14 | 1153 | ev->enabled = 0; |
89476427 | 1154 | } else { |
91744e14 | 1155 | ev->enabled = 1; |
89476427 JRJ |
1156 | } |
1157 | ||
8884bbc1 | 1158 | ret = mi_lttng_event(writer.get(), ev, 1, handle->domain.type); |
89476427 JRJ |
1159 | if (ret) { |
1160 | ret = CMD_ERROR; | |
1161 | goto error; | |
1162 | } | |
1163 | ||
1164 | /* print exclusion */ | |
e358ddd5 | 1165 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
1166 | if (ret) { |
1167 | ret = CMD_ERROR; | |
1168 | goto error; | |
1169 | } | |
1170 | ||
1171 | /* Success ? */ | |
28ab034a | 1172 | ret = mi_lttng_writer_write_element_bool( |
8884bbc1 | 1173 | writer.get(), mi_lttng_element_command_success, success); |
89476427 JRJ |
1174 | if (ret) { |
1175 | ret = CMD_ERROR; | |
1176 | goto end; | |
1177 | } | |
1178 | ||
1179 | /* Close event element */ | |
8884bbc1 | 1180 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
1181 | if (ret) { |
1182 | ret = CMD_ERROR; | |
1183 | goto end; | |
1184 | } | |
1185 | } | |
1186 | ||
f3ed775e | 1187 | /* Next event */ |
cd9adb8b | 1188 | event_name = strtok(nullptr, ","); |
89476427 JRJ |
1189 | /* Reset warn, error and success */ |
1190 | success = 1; | |
f3ed775e DG |
1191 | } |
1192 | ||
8c9ae521 | 1193 | end: |
89476427 JRJ |
1194 | /* Close Mi */ |
1195 | if (lttng_opt_mi) { | |
1196 | /* Close events element */ | |
8884bbc1 | 1197 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
1198 | if (ret) { |
1199 | ret = CMD_ERROR; | |
1200 | goto error; | |
1201 | } | |
1202 | } | |
f3ed775e | 1203 | error: |
ae856491 DG |
1204 | if (warn) { |
1205 | ret = CMD_WARNING; | |
1206 | } | |
89476427 JRJ |
1207 | if (error) { |
1208 | ret = CMD_ERROR; | |
1209 | } | |
cd80958d | 1210 | lttng_destroy_handle(handle); |
e358ddd5 | 1211 | lttng_dynamic_pointer_array_reset(&exclusions); |
0c4e727b | 1212 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1213 | |
89476427 JRJ |
1214 | /* Overwrite ret with error_holder if there was an actual error with |
1215 | * enabling an event. | |
1216 | */ | |
1217 | ret = error_holder ? error_holder : ret; | |
1218 | ||
91744e14 | 1219 | lttng_event_destroy(ev); |
f3ed775e DG |
1220 | return ret; |
1221 | } | |
1222 | ||
c926bb36 JG |
1223 | void _poptContextFree_deleter_func(poptContext ctx) |
1224 | { | |
1225 | poptFreeContext(ctx); | |
1226 | } | |
1227 | ||
d512607f JG |
1228 | } /* namespace */ |
1229 | ||
1230 | int validate_exclusion_list(const char *event_name, | |
1231 | const struct lttng_dynamic_pointer_array *exclusions) | |
1232 | { | |
1233 | int ret; | |
1234 | ||
1235 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
1236 | if (!strutils_is_star_glob_pattern(event_name)) { | |
1237 | ERR("Event %s: Exclusions can only be used with a globbing pattern", event_name); | |
1238 | goto error; | |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | * If the event name is a star-at-end only globbing pattern, | |
1243 | * then we can validate the individual exclusions. Otherwise | |
1244 | * all exclusions are passed to the session daemon. | |
1245 | */ | |
1246 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
1247 | size_t i, num_exclusions; | |
1248 | ||
1249 | num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
1250 | ||
1251 | for (i = 0; i < num_exclusions; i++) { | |
1252 | const char *exclusion = | |
1253 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, | |
1254 | i); | |
1255 | ||
1256 | if (!strutils_is_star_glob_pattern(exclusion) || | |
1257 | strutils_is_star_at_the_end_only_glob_pattern(exclusion)) { | |
1258 | ret = check_exclusion_subsets(event_name, exclusion); | |
1259 | if (ret) { | |
1260 | goto error; | |
1261 | } | |
1262 | } | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | ret = 0; | |
1267 | goto end; | |
1268 | ||
1269 | error: | |
1270 | ret = -1; | |
1271 | ||
1272 | end: | |
1273 | return ret; | |
1274 | } | |
1275 | ||
f3ed775e | 1276 | /* |
6181537c | 1277 | * Add event to trace session |
f3ed775e DG |
1278 | */ |
1279 | int cmd_enable_events(int argc, const char **argv) | |
1280 | { | |
89476427 | 1281 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
cd9adb8b JG |
1282 | char *session_name = nullptr; |
1283 | char *event_list = nullptr; | |
1284 | const char *arg_event_list = nullptr; | |
1285 | const char *leftover = nullptr; | |
de044b7a | 1286 | int event_type = -1; |
f3ed775e | 1287 | |
c926bb36 JG |
1288 | auto pc = lttng::make_unique_wrapper<poptContext_s, _poptContextFree_deleter_func>( |
1289 | poptGetContext(nullptr, argc, argv, long_options, 0)); | |
1290 | poptReadDefaultConfig(pc.get(), 0); | |
f3ed775e DG |
1291 | |
1292 | /* Default event type */ | |
7a3d1328 | 1293 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e | 1294 | |
c926bb36 | 1295 | while ((opt = poptGetNextOpt(pc.get())) != -1) { |
f3ed775e DG |
1296 | switch (opt) { |
1297 | case OPT_HELP: | |
4ba92f18 | 1298 | SHOW_HELP(); |
f3ed775e | 1299 | goto end; |
f3ed775e | 1300 | case OPT_TRACEPOINT: |
e6ddca71 | 1301 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1302 | break; |
cf0e5467 | 1303 | case OPT_PROBE: |
7d29a247 | 1304 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1305 | break; |
dcabc190 FD |
1306 | case OPT_USERSPACE_PROBE: |
1307 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1308 | break; | |
f3ed775e DG |
1309 | case OPT_FUNCTION: |
1310 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1311 | break; |
a54bd42d MD |
1312 | case OPT_SYSCALL: |
1313 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1314 | break; |
eeac7d46 MD |
1315 | case OPT_USERSPACE: |
1316 | opt_userspace = 1; | |
eeac7d46 | 1317 | break; |
0cda4f28 | 1318 | case OPT_LOGLEVEL: |
8005f29a | 1319 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
c926bb36 | 1320 | opt_loglevel = poptGetOptArg(pc.get()); |
0cda4f28 MD |
1321 | break; |
1322 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1323 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
c926bb36 | 1324 | opt_loglevel = poptGetOptArg(pc.get()); |
13dce3b7 | 1325 | break; |
679b4943 SM |
1326 | case OPT_LIST_OPTIONS: |
1327 | list_cmd_options(stdout, long_options); | |
679b4943 | 1328 | goto end; |
53a80697 MD |
1329 | case OPT_FILTER: |
1330 | break; | |
fac3366c JI |
1331 | case OPT_EXCLUDE: |
1332 | break; | |
f3ed775e | 1333 | default: |
f3ed775e DG |
1334 | ret = CMD_UNDEFINED; |
1335 | goto end; | |
1336 | } | |
de044b7a DG |
1337 | |
1338 | /* Validate event type. Multiple event type are not supported. */ | |
1339 | if (event_type == -1) { | |
1340 | event_type = opt_event_type; | |
1341 | } else { | |
1342 | if (event_type != opt_event_type) { | |
1343 | ERR("Multiple event type not supported."); | |
1344 | ret = CMD_ERROR; | |
1345 | goto end; | |
1346 | } | |
1347 | } | |
f3ed775e DG |
1348 | } |
1349 | ||
3ecec76a | 1350 | ret = print_missing_or_multiple_domains( |
28ab034a | 1351 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python, true); |
3ecec76a PP |
1352 | if (ret) { |
1353 | ret = CMD_ERROR; | |
1354 | goto end; | |
1355 | } | |
1356 | ||
89476427 JRJ |
1357 | /* Mi check */ |
1358 | if (lttng_opt_mi) { | |
8884bbc1 | 1359 | writer = mi_writer_uptr(mi_lttng_writer_create(fileno(stdout), lttng_opt_mi)); |
89476427 JRJ |
1360 | if (!writer) { |
1361 | ret = -LTTNG_ERR_NOMEM; | |
1362 | goto end; | |
1363 | } | |
1364 | ||
1365 | /* Open command element */ | |
8884bbc1 JG |
1366 | ret = mi_lttng_writer_command_open(writer.get(), |
1367 | mi_lttng_element_command_enable_event); | |
89476427 JRJ |
1368 | if (ret) { |
1369 | ret = CMD_ERROR; | |
1370 | goto end; | |
1371 | } | |
1372 | ||
1373 | /* Open output element */ | |
8884bbc1 | 1374 | ret = mi_lttng_writer_open_element(writer.get(), mi_lttng_element_command_output); |
89476427 JRJ |
1375 | if (ret) { |
1376 | ret = CMD_ERROR; | |
1377 | goto end; | |
1378 | } | |
1379 | } | |
1380 | ||
c926bb36 | 1381 | arg_event_list = poptGetArg(pc.get()); |
cd9adb8b | 1382 | if (arg_event_list == nullptr && opt_enable_all == 0) { |
5b915816 | 1383 | ERR("Missing event name(s)."); |
ca1c3607 | 1384 | ret = CMD_ERROR; |
f3ed775e DG |
1385 | goto end; |
1386 | } | |
1387 | ||
5b915816 MJ |
1388 | if (opt_enable_all == 0) { |
1389 | event_list = strdup(arg_event_list); | |
cd9adb8b | 1390 | if (event_list == nullptr) { |
5b915816 MJ |
1391 | PERROR("Failed to copy event name(s)"); |
1392 | ret = CMD_ERROR; | |
1393 | goto end; | |
1394 | } | |
1395 | } | |
1396 | ||
c926bb36 | 1397 | leftover = poptGetArg(pc.get()); |
68c7f6e5 JD |
1398 | if (leftover) { |
1399 | ERR("Unknown argument: %s", leftover); | |
1400 | ret = CMD_ERROR; | |
1401 | goto end; | |
1402 | } | |
1403 | ||
cd80958d DG |
1404 | if (!opt_session_name) { |
1405 | session_name = get_session_name(); | |
cd9adb8b | 1406 | if (session_name == nullptr) { |
89476427 JRJ |
1407 | command_ret = CMD_ERROR; |
1408 | success = 0; | |
1409 | goto mi_closing; | |
cd80958d DG |
1410 | } |
1411 | } else { | |
1412 | session_name = opt_session_name; | |
1413 | } | |
1414 | ||
5b915816 | 1415 | command_ret = enable_events(session_name, event_list); |
89476427 JRJ |
1416 | if (command_ret) { |
1417 | success = 0; | |
1418 | goto mi_closing; | |
1419 | } | |
1420 | ||
1421 | mi_closing: | |
1422 | /* Mi closing */ | |
1423 | if (lttng_opt_mi) { | |
1424 | /* Close output element */ | |
8884bbc1 | 1425 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
1426 | if (ret) { |
1427 | ret = CMD_ERROR; | |
1428 | goto end; | |
1429 | } | |
1430 | ||
28ab034a | 1431 | ret = mi_lttng_writer_write_element_bool( |
8884bbc1 | 1432 | writer.get(), mi_lttng_element_command_success, success); |
89476427 JRJ |
1433 | if (ret) { |
1434 | ret = CMD_ERROR; | |
1435 | goto end; | |
1436 | } | |
1437 | ||
1438 | /* Command element close */ | |
8884bbc1 | 1439 | ret = mi_lttng_writer_command_close(writer.get()); |
89476427 JRJ |
1440 | if (ret) { |
1441 | ret = CMD_ERROR; | |
1442 | goto end; | |
1443 | } | |
1444 | } | |
f3ed775e DG |
1445 | |
1446 | end: | |
cd9adb8b | 1447 | if (opt_session_name == nullptr) { |
cd80958d DG |
1448 | free(session_name); |
1449 | } | |
1450 | ||
5b915816 MJ |
1451 | free(event_list); |
1452 | ||
89476427 JRJ |
1453 | /* Overwrite ret if an error occurred in enable_events */ |
1454 | ret = command_ret ? command_ret : ret; | |
f3ed775e DG |
1455 | return ret; |
1456 | } |