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 | 18 | #include <popt.h> |
bf1413aa | 19 | #include <sstream> |
f3ed775e DG |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
bf1413aa | 22 | #include <string> |
f3ed775e DG |
23 | #include <sys/stat.h> |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
bf1413aa | 26 | #include <vector> |
f3ed775e | 27 | |
89476427 | 28 | /* Mi dependancy */ |
28ab034a JG |
29 | #include "../command.hpp" |
30 | #include "../loglevel.hpp" | |
31 | #include "../uprobe.hpp" | |
32 | ||
c9e313bc | 33 | #include <common/mi-lttng.hpp> |
89476427 | 34 | |
c9e313bc SM |
35 | #include <lttng/domain-internal.hpp> |
36 | #include <lttng/event-internal.hpp> | |
7e8f2e9c | 37 | |
8ab7c0d9 | 38 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
28ab034a | 39 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" |
8ab7c0d9 MD |
40 | #endif |
41 | ||
d512607f | 42 | namespace { |
8884bbc1 JG |
43 | void _mi_lttng_writer_deleter_func(mi_writer *writer) |
44 | { | |
45 | if (writer && mi_lttng_writer_destroy(writer)) { | |
46 | LTTNG_THROW_ERROR("Failed to destroy mi_writer instance"); | |
47 | } | |
48 | } | |
49 | ||
50 | using mi_writer_uptr = std::unique_ptr< | |
51 | mi_writer, | |
52 | lttng::memory::create_deleter_class<mi_writer, _mi_lttng_writer_deleter_func>::deleter>; | |
bf1413aa | 53 | using event_rule_patterns = std::vector<std::string>; |
d512607f JG |
54 | |
55 | int opt_event_type; | |
56 | const char *opt_loglevel; | |
57 | int opt_loglevel_type; | |
58 | int opt_kernel; | |
59 | char *opt_session_name; | |
60 | int opt_userspace; | |
61 | int opt_jul; | |
62 | int opt_log4j; | |
63 | int opt_python; | |
64 | int opt_enable_all; | |
65 | char *opt_probe; | |
66 | char *opt_userspace_probe; | |
67 | char *opt_function; | |
68 | char *opt_channel_name; | |
69 | char *opt_filter; | |
70 | char *opt_exclude; | |
f3ed775e | 71 | |
8884bbc1 JG |
72 | struct lttng_handle *handle; |
73 | mi_writer_uptr writer; | |
74 | ||
4fc83d94 PP |
75 | #ifdef LTTNG_EMBED_HELP |
76 | static const char help_msg[] = | |
77 | #include <lttng-enable-event.1.h> | |
28ab034a | 78 | ; |
4fc83d94 PP |
79 | #endif |
80 | ||
f3ed775e DG |
81 | enum { |
82 | OPT_HELP = 1, | |
f3ed775e | 83 | OPT_TRACEPOINT, |
cf0e5467 | 84 | OPT_PROBE, |
dcabc190 | 85 | OPT_USERSPACE_PROBE, |
f3ed775e | 86 | OPT_FUNCTION, |
a54bd42d | 87 | OPT_SYSCALL, |
eeac7d46 | 88 | OPT_USERSPACE, |
0cda4f28 MD |
89 | OPT_LOGLEVEL, |
90 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 91 | OPT_LIST_OPTIONS, |
53a80697 | 92 | OPT_FILTER, |
fac3366c | 93 | OPT_EXCLUDE, |
f3ed775e DG |
94 | }; |
95 | ||
d512607f | 96 | struct poptOption long_options[] = { |
f3ed775e | 97 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
cd9adb8b JG |
98 | { "help", 'h', POPT_ARG_NONE, nullptr, OPT_HELP, nullptr, nullptr }, |
99 | { "session", 's', POPT_ARG_STRING, &opt_session_name, 0, nullptr, nullptr }, | |
100 | { "all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, nullptr, nullptr }, | |
101 | { "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, nullptr, nullptr }, | |
102 | { "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, nullptr, nullptr }, | |
103 | { "userspace", 'u', POPT_ARG_NONE, nullptr, OPT_USERSPACE, nullptr, nullptr }, | |
104 | { "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, nullptr, nullptr }, | |
105 | { "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, nullptr, nullptr }, | |
106 | { "python", 'p', POPT_ARG_VAL, &opt_python, 1, nullptr, nullptr }, | |
107 | { "tracepoint", 0, POPT_ARG_NONE, nullptr, OPT_TRACEPOINT, nullptr, nullptr }, | |
108 | { "probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, nullptr, nullptr }, | |
109 | { "userspace-probe", | |
110 | 0, | |
111 | POPT_ARG_STRING, | |
112 | &opt_userspace_probe, | |
113 | OPT_USERSPACE_PROBE, | |
114 | nullptr, | |
115 | nullptr }, | |
116 | { "function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, nullptr, nullptr }, | |
117 | { "syscall", 0, POPT_ARG_NONE, nullptr, OPT_SYSCALL, nullptr, nullptr }, | |
118 | { "loglevel", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL, nullptr, nullptr }, | |
119 | { "loglevel-only", 0, POPT_ARG_STRING, nullptr, OPT_LOGLEVEL_ONLY, nullptr, nullptr }, | |
120 | { "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr }, | |
121 | { "filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, nullptr, nullptr }, | |
122 | { "exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, nullptr, nullptr }, | |
123 | { nullptr, 0, 0, nullptr, 0, nullptr, nullptr } | |
f3ed775e DG |
124 | }; |
125 | ||
0d63dd19 | 126 | /* |
6181537c | 127 | * Parse probe options. |
0d63dd19 | 128 | */ |
d512607f | 129 | int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 130 | { |
49d4e302 JRJ |
131 | int ret = CMD_SUCCESS; |
132 | int match; | |
8ff0bbd0 | 133 | char s_hex[19]; |
28ab034a | 134 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
135 | char name[LTTNG_SYMBOL_NAME_LEN]; |
136 | ||
cd9adb8b | 137 | if (opt == nullptr) { |
49d4e302 | 138 | ret = CMD_ERROR; |
8f0d098b | 139 | goto end; |
0d63dd19 DG |
140 | } |
141 | ||
142 | /* Check for symbol+offset */ | |
28ab034a JG |
143 | match = sscanf(opt, |
144 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
145 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", | |
146 | name, | |
147 | s_hex); | |
49d4e302 | 148 | if (match == 2) { |
7d29a247 | 149 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 150 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 151 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 152 | if (*s_hex == '\0') { |
8ff0bbd0 | 153 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 154 | ret = CMD_ERROR; |
8f0d098b | 155 | goto end; |
0d63dd19 | 156 | } |
cd9adb8b | 157 | ev->attr.probe.offset = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 158 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 159 | ev->attr.probe.addr = 0; |
8f0d098b MD |
160 | goto end; |
161 | } | |
162 | ||
163 | /* Check for symbol */ | |
88c91427 | 164 | if (isalpha(name[0]) || name[0] == '_') { |
28ab034a | 165 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", name); |
49d4e302 | 166 | if (match == 1) { |
8f0d098b | 167 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 168 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
169 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
170 | ev->attr.probe.offset = 0; | |
171 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
172 | ev->attr.probe.addr = 0; | |
173 | goto end; | |
174 | } | |
0d63dd19 DG |
175 | } |
176 | ||
177 | /* Check for address */ | |
49d4e302 JRJ |
178 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
179 | if (match > 0) { | |
531be721 FD |
180 | /* |
181 | * Return an error if the first character of the tentative | |
182 | * address is NULL or not a digit. It can be "0" if the address | |
183 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
184 | */ | |
185 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
186 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 187 | ret = CMD_ERROR; |
8f0d098b | 188 | goto end; |
0d63dd19 | 189 | } |
cd9adb8b | 190 | ev->attr.probe.addr = strtoull(s_hex, nullptr, 0); |
cf0e5467 | 191 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
192 | ev->attr.probe.offset = 0; |
193 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 194 | goto end; |
0d63dd19 DG |
195 | } |
196 | ||
197 | /* No match */ | |
49d4e302 | 198 | ret = CMD_ERROR; |
0d63dd19 | 199 | |
8f0d098b | 200 | end: |
0d63dd19 DG |
201 | return ret; |
202 | } | |
203 | ||
d512607f | 204 | const char *print_channel_name(const char *name) |
85076754 | 205 | { |
28ab034a | 206 | return name ?: DEFAULT_CHANNEL_NAME; |
85076754 MD |
207 | } |
208 | ||
d512607f | 209 | const char *print_raw_channel_name(const char *name) |
85076754 | 210 | { |
28ab034a | 211 | return name ?: "<default>"; |
85076754 MD |
212 | } |
213 | ||
89476427 JRJ |
214 | /* |
215 | * Mi print exlcusion list | |
216 | */ | |
d512607f | 217 | int mi_print_exclusion(const struct lttng_dynamic_pointer_array *exclusions) |
89476427 | 218 | { |
e358ddd5 JG |
219 | int ret; |
220 | size_t i; | |
221 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); | |
89476427 | 222 | |
a0377dfe | 223 | LTTNG_ASSERT(writer); |
89476427 JRJ |
224 | |
225 | if (count == 0) { | |
226 | ret = 0; | |
227 | goto end; | |
228 | } | |
e358ddd5 | 229 | |
8884bbc1 | 230 | ret = mi_lttng_writer_open_element(writer.get(), config_element_exclusions); |
89476427 JRJ |
231 | if (ret) { |
232 | goto end; | |
233 | } | |
234 | ||
235 | for (i = 0; i < count; i++) { | |
28ab034a JG |
236 | const char *exclusion = |
237 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 238 | |
28ab034a | 239 | ret = mi_lttng_writer_write_element_string( |
8884bbc1 | 240 | writer.get(), config_element_exclusion, exclusion); |
89476427 JRJ |
241 | if (ret) { |
242 | goto end; | |
243 | } | |
244 | } | |
245 | ||
246 | /* Close exclusions element */ | |
8884bbc1 | 247 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
248 | |
249 | end: | |
250 | return ret; | |
251 | } | |
252 | ||
9c48cab3 JI |
253 | /* |
254 | * Return allocated string for pretty-printing exclusion names. | |
255 | */ | |
d512607f | 256 | char *print_exclusions(const struct lttng_dynamic_pointer_array *exclusions) |
9c48cab3 JI |
257 | { |
258 | int length = 0; | |
e358ddd5 | 259 | size_t i; |
bfe36393 | 260 | const char preamble[] = " excluding "; |
9c48cab3 | 261 | char *ret; |
e358ddd5 | 262 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); |
9c48cab3 JI |
263 | |
264 | if (count == 0) { | |
265 | return strdup(""); | |
266 | } | |
267 | ||
e358ddd5 | 268 | /* Calculate total required length. */ |
9c48cab3 | 269 | for (i = 0; i < count; i++) { |
28ab034a JG |
270 | const char *exclusion = |
271 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 JG |
272 | |
273 | length += strlen(exclusion) + 4; | |
9c48cab3 JI |
274 | } |
275 | ||
bfe36393 | 276 | length += sizeof(preamble); |
64803277 | 277 | ret = calloc<char>(length); |
fd591b18 | 278 | if (!ret) { |
cd9adb8b | 279 | return nullptr; |
fd591b18 | 280 | } |
e358ddd5 | 281 | |
9c48cab3 JI |
282 | strncpy(ret, preamble, length); |
283 | for (i = 0; i < count; i++) { | |
28ab034a JG |
284 | const char *exclusion = |
285 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 286 | |
9f449915 | 287 | strcat(ret, "\""); |
e358ddd5 | 288 | strcat(ret, exclusion); |
9f449915 | 289 | strcat(ret, "\""); |
9c48cab3 | 290 | if (i != count - 1) { |
9f449915 | 291 | strcat(ret, ", "); |
9c48cab3 JI |
292 | } |
293 | } | |
89476427 | 294 | |
9c48cab3 JI |
295 | return ret; |
296 | } | |
297 | ||
bf1413aa | 298 | int check_exclusion_subsets(const char *pattern, const char *exclusion) |
748bde76 | 299 | { |
9f449915 PP |
300 | bool warn = false; |
301 | int ret = 0; | |
bf1413aa | 302 | const char *e = pattern; |
9f449915 PP |
303 | const char *x = exclusion; |
304 | ||
305 | /* Scan both the excluder and the event letter by letter */ | |
306 | while (true) { | |
307 | if (*e == '\\') { | |
308 | if (*x != *e) { | |
309 | warn = true; | |
310 | goto end; | |
311 | } | |
748bde76 | 312 | |
9f449915 PP |
313 | e++; |
314 | x++; | |
315 | goto cmp_chars; | |
316 | } | |
317 | ||
318 | if (*x == '*') { | |
319 | /* Event is a subset of the excluder */ | |
bf1413aa | 320 | ERR("Event %s: %s excludes all events from %s", pattern, exclusion, pattern); |
9f449915 PP |
321 | goto error; |
322 | } | |
323 | ||
324 | if (*e == '*') { | |
325 | /* | |
326 | * Reached the end of the event name before the | |
327 | * end of the exclusion: this is valid. | |
328 | */ | |
329 | goto end; | |
330 | } | |
331 | ||
28ab034a | 332 | cmp_chars: |
9f449915 PP |
333 | if (*x != *e) { |
334 | warn = true; | |
335 | break; | |
336 | } | |
337 | ||
338 | x++; | |
339 | e++; | |
748bde76 JI |
340 | } |
341 | ||
9f449915 | 342 | goto end; |
748bde76 | 343 | |
9f449915 PP |
344 | error: |
345 | ret = -1; | |
748bde76 | 346 | |
9f449915 PP |
347 | end: |
348 | if (warn) { | |
349 | WARN("Event %s: %s does not exclude any events from %s", | |
bf1413aa | 350 | pattern, |
28ab034a | 351 | exclusion, |
bf1413aa | 352 | pattern); |
9f449915 | 353 | } |
748bde76 | 354 | |
9f449915 PP |
355 | return ret; |
356 | } | |
357 | ||
bf1413aa | 358 | int create_exclusion_list_and_validate(const char *pattern, |
d512607f JG |
359 | const char *exclusions_arg, |
360 | struct lttng_dynamic_pointer_array *exclusions) | |
b03a81fb SM |
361 | { |
362 | int ret = 0; | |
b03a81fb SM |
363 | |
364 | /* Split exclusions. */ | |
e358ddd5 JG |
365 | ret = strutils_split(exclusions_arg, ',', true, exclusions); |
366 | if (ret < 0) { | |
b03a81fb SM |
367 | goto error; |
368 | } | |
369 | ||
bf1413aa | 370 | if (validate_exclusion_list(pattern, exclusions) != 0) { |
b03a81fb SM |
371 | goto error; |
372 | } | |
373 | ||
748bde76 | 374 | goto end; |
9f449915 | 375 | |
748bde76 | 376 | error: |
9f449915 | 377 | ret = -1; |
e358ddd5 | 378 | lttng_dynamic_pointer_array_reset(exclusions); |
9f449915 | 379 | |
748bde76 | 380 | end: |
748bde76 JI |
381 | return ret; |
382 | } | |
502bbe89 | 383 | |
d512607f JG |
384 | void warn_on_truncated_exclusion_names(const struct lttng_dynamic_pointer_array *exclusions, |
385 | int *warn) | |
502bbe89 | 386 | { |
e358ddd5 JG |
387 | size_t i; |
388 | const size_t num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
389 | ||
390 | for (i = 0; i < num_exclusions; i++) { | |
28ab034a JG |
391 | const char *const exclusion = |
392 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
502bbe89 | 393 | |
e358ddd5 | 394 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { |
28ab034a | 395 | WARN("Event exclusion \"%s\" will be truncated", exclusion); |
502bbe89 PP |
396 | *warn = 1; |
397 | } | |
398 | } | |
399 | } | |
400 | ||
f3ed775e | 401 | /* |
6181537c | 402 | * Enabling event using the lttng API. |
89476427 | 403 | * Note: in case of error only the last error code will be return. |
f3ed775e | 404 | */ |
bf1413aa | 405 | int enable_events(const std::string& session_name, const event_rule_patterns& patterns) |
f3ed775e | 406 | { |
89476427 JRJ |
407 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
408 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
bf1413aa | 409 | char *channel_name = nullptr; |
91744e14 | 410 | struct lttng_event *ev; |
e358ddd5 JG |
411 | struct lttng_domain dom = {}; |
412 | struct lttng_dynamic_pointer_array exclusions; | |
cd9adb8b | 413 | struct lttng_userspace_probe_location *uprobe_loc = nullptr; |
f3ed775e | 414 | |
cd9adb8b | 415 | lttng_dynamic_pointer_array_init(&exclusions, nullptr); |
441c16a7 | 416 | |
91744e14 FD |
417 | ev = lttng_event_create(); |
418 | if (!ev) { | |
419 | ret = CMD_ERROR; | |
420 | goto error; | |
421 | } | |
422 | ||
53a80697 | 423 | if (opt_kernel) { |
67b58630 JG |
424 | if (opt_loglevel) { |
425 | WARN("Kernel loglevels are not supported."); | |
426 | } | |
53a80697 MD |
427 | } |
428 | ||
7d29a247 DG |
429 | /* Create lttng domain */ |
430 | if (opt_kernel) { | |
431 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 432 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 433 | } else if (opt_userspace) { |
2bdd86d4 | 434 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 435 | /* Default. */ |
8692d4e5 | 436 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
437 | } else if (opt_jul) { |
438 | dom.type = LTTNG_DOMAIN_JUL; | |
439 | /* Default. */ | |
440 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
441 | } else if (opt_log4j) { |
442 | dom.type = LTTNG_DOMAIN_LOG4J; | |
443 | /* Default. */ | |
444 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
445 | } else if (opt_python) { |
446 | dom.type = LTTNG_DOMAIN_PYTHON; | |
447 | /* Default. */ | |
448 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 449 | } else { |
3ecec76a | 450 | /* Checked by the caller. */ |
a0377dfe | 451 | abort(); |
2bdd86d4 | 452 | } |
7d29a247 | 453 | |
8b08c525 AB |
454 | if (opt_exclude) { |
455 | switch (dom.type) { | |
456 | case LTTNG_DOMAIN_KERNEL: | |
457 | case LTTNG_DOMAIN_JUL: | |
458 | case LTTNG_DOMAIN_LOG4J: | |
459 | case LTTNG_DOMAIN_PYTHON: | |
460 | ERR("Event name exclusions are not yet implemented for %s events", | |
28ab034a | 461 | lttng_domain_type_str(dom.type)); |
8b08c525 AB |
462 | ret = CMD_ERROR; |
463 | goto error; | |
464 | case LTTNG_DOMAIN_UST: | |
465 | /* Exclusions supported */ | |
466 | break; | |
467 | default: | |
a0377dfe | 468 | abort(); |
8b08c525 | 469 | } |
d5dd17fd JI |
470 | } |
471 | ||
4fd2697f FD |
472 | /* |
473 | * Adding a filter to a probe, function or userspace-probe would be | |
474 | * denied by the kernel tracer as it's not supported at the moment. We | |
475 | * do an early check here to warn the user. | |
476 | */ | |
477 | if (opt_filter && opt_kernel) { | |
478 | switch (opt_event_type) { | |
479 | case LTTNG_EVENT_ALL: | |
480 | case LTTNG_EVENT_TRACEPOINT: | |
481 | case LTTNG_EVENT_SYSCALL: | |
482 | break; | |
483 | case LTTNG_EVENT_PROBE: | |
484 | case LTTNG_EVENT_USERSPACE_PROBE: | |
485 | case LTTNG_EVENT_FUNCTION: | |
486 | ERR("Filter expressions are not supported for %s events", | |
28ab034a | 487 | get_event_type_str((lttng_event_type) opt_event_type)); |
4fd2697f FD |
488 | ret = CMD_ERROR; |
489 | goto error; | |
490 | default: | |
491 | ret = CMD_UNDEFINED; | |
492 | goto error; | |
493 | } | |
494 | } | |
495 | ||
85076754 | 496 | channel_name = opt_channel_name; |
ae856491 | 497 | |
bf1413aa | 498 | handle = lttng_create_handle(session_name.c_str(), &dom); |
cd9adb8b | 499 | if (handle == nullptr) { |
cd80958d DG |
500 | ret = -1; |
501 | goto error; | |
502 | } | |
1aef21b6 | 503 | |
89476427 JRJ |
504 | /* Prepare Mi */ |
505 | if (lttng_opt_mi) { | |
506 | /* Open a events element */ | |
8884bbc1 | 507 | ret = mi_lttng_writer_open_element(writer.get(), config_element_events); |
89476427 JRJ |
508 | if (ret) { |
509 | ret = CMD_ERROR; | |
510 | goto error; | |
511 | } | |
512 | } | |
513 | ||
cd80958d | 514 | if (opt_enable_all) { |
8c9ae521 | 515 | /* Default setup for enable all */ |
75e8c5ab | 516 | if (opt_kernel) { |
48a40005 | 517 | ev->type = (lttng_event_type) opt_event_type; |
91744e14 | 518 | strcpy(ev->name, "*"); |
300b8fd5 | 519 | /* kernel loglevels not implemented */ |
91744e14 | 520 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 521 | } else { |
91744e14 FD |
522 | ev->type = LTTNG_EVENT_TRACEPOINT; |
523 | strcpy(ev->name, "*"); | |
48a40005 | 524 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
300b8fd5 | 525 | if (opt_loglevel) { |
7e8f2e9c JG |
526 | int name_search_ret; |
527 | ||
a0377dfe | 528 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 529 | |
b2064f54 | 530 | if (opt_userspace) { |
7e8f2e9c JG |
531 | enum lttng_loglevel loglevel; |
532 | ||
28ab034a JG |
533 | name_search_ret = |
534 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 535 | ev->loglevel = (int) loglevel; |
b2064f54 | 536 | } else if (opt_jul) { |
7e8f2e9c JG |
537 | enum lttng_loglevel_jul loglevel; |
538 | ||
28ab034a JG |
539 | name_search_ret = |
540 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 541 | ev->loglevel = (int) loglevel; |
5cdb6027 | 542 | } else if (opt_log4j) { |
7e8f2e9c JG |
543 | enum lttng_loglevel_log4j loglevel; |
544 | ||
28ab034a JG |
545 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
546 | &loglevel); | |
7e8f2e9c | 547 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
548 | } else { |
549 | /* python domain. */ | |
7e8f2e9c JG |
550 | enum lttng_loglevel_python loglevel; |
551 | ||
28ab034a JG |
552 | name_search_ret = loglevel_python_name_to_value( |
553 | opt_loglevel, &loglevel); | |
7e8f2e9c | 554 | ev->loglevel = (int) loglevel; |
b2064f54 | 555 | } |
7e8f2e9c JG |
556 | |
557 | if (name_search_ret == -1) { | |
300b8fd5 | 558 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 559 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
560 | goto error; |
561 | } | |
22e25b71 | 562 | } else { |
a0377dfe | 563 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 564 | if (opt_userspace) { |
91744e14 | 565 | ev->loglevel = -1; |
34aa3685 | 566 | } else if (opt_jul) { |
91744e14 | 567 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 568 | } else if (opt_log4j) { |
91744e14 | 569 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 570 | } else if (opt_python) { |
91744e14 | 571 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 572 | } |
300b8fd5 | 573 | } |
75e8c5ab | 574 | } |
8c9ae521 | 575 | |
7ed70bc9 | 576 | if (opt_exclude) { |
28ab034a | 577 | ret = create_exclusion_list_and_validate("*", opt_exclude, &exclusions); |
9f449915 PP |
578 | if (ret) { |
579 | ret = CMD_ERROR; | |
7ed70bc9 JI |
580 | goto error; |
581 | } | |
502bbe89 | 582 | |
91744e14 | 583 | ev->exclusion = 1; |
28ab034a | 584 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 | 585 | } |
025faf73 | 586 | if (!opt_filter) { |
28ab034a JG |
587 | ret = lttng_enable_event_with_exclusions( |
588 | handle, | |
589 | ev, | |
590 | channel_name, | |
cd9adb8b | 591 | nullptr, |
28ab034a JG |
592 | lttng_dynamic_pointer_array_get_count(&exclusions), |
593 | (char **) exclusions.array.buffer.data); | |
025faf73 DG |
594 | if (ret < 0) { |
595 | switch (-ret) { | |
596 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
597 | WARN("Kernel events already enabled (channel %s, session %s)", | |
28ab034a | 598 | print_channel_name(channel_name), |
bf1413aa | 599 | session_name.c_str()); |
89476427 | 600 | warn = 1; |
025faf73 | 601 | break; |
45d5d421 CB |
602 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
603 | { | |
28ab034a JG |
604 | const char *msg = |
605 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 606 | ERR("Events: %s (channel %s, session %s)", |
28ab034a JG |
607 | msg, |
608 | print_channel_name(channel_name), | |
bf1413aa | 609 | session_name.c_str()); |
45d5d421 CB |
610 | error = 1; |
611 | break; | |
612 | } | |
025faf73 DG |
613 | default: |
614 | ERR("Events: %s (channel %s, session %s)", | |
28ab034a JG |
615 | lttng_strerror(ret), |
616 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
617 | print_raw_channel_name(channel_name) : | |
618 | print_channel_name(channel_name), | |
bf1413aa | 619 | session_name.c_str()); |
89476427 | 620 | error = 1; |
025faf73 DG |
621 | break; |
622 | } | |
623 | goto end; | |
42224349 | 624 | } |
8c9ae521 | 625 | |
025faf73 DG |
626 | switch (opt_event_type) { |
627 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 628 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 629 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
630 | |
631 | if (!exclusion_string) { | |
632 | PERROR("Cannot allocate exclusion_string"); | |
633 | error = 1; | |
634 | goto end; | |
635 | } | |
9c48cab3 | 636 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
637 | lttng_domain_type_str(dom.type), |
638 | exclusion_string, | |
639 | print_channel_name(channel_name), | |
640 | opt_loglevel); | |
9c48cab3 | 641 | free(exclusion_string); |
025faf73 | 642 | } else { |
e358ddd5 | 643 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
644 | |
645 | if (!exclusion_string) { | |
646 | PERROR("Cannot allocate exclusion_string"); | |
647 | error = 1; | |
648 | goto end; | |
649 | } | |
9c48cab3 | 650 | MSG("All %s tracepoints%s are enabled in channel %s", |
28ab034a JG |
651 | lttng_domain_type_str(dom.type), |
652 | exclusion_string, | |
653 | print_channel_name(channel_name)); | |
9c48cab3 | 654 | free(exclusion_string); |
025faf73 DG |
655 | } |
656 | break; | |
657 | case LTTNG_EVENT_SYSCALL: | |
658 | if (opt_kernel) { | |
6e911cad | 659 | MSG("All %s system calls are enabled in channel %s", |
28ab034a JG |
660 | lttng_domain_type_str(dom.type), |
661 | print_channel_name(channel_name)); | |
025faf73 DG |
662 | } |
663 | break; | |
664 | case LTTNG_EVENT_ALL: | |
67b58630 | 665 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 666 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
667 | |
668 | if (!exclusion_string) { | |
669 | PERROR("Cannot allocate exclusion_string"); | |
670 | error = 1; | |
671 | goto end; | |
672 | } | |
9c48cab3 | 673 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
674 | lttng_domain_type_str(dom.type), |
675 | exclusion_string, | |
676 | print_channel_name(channel_name), | |
677 | opt_loglevel); | |
9c48cab3 | 678 | free(exclusion_string); |
025faf73 | 679 | } else { |
e358ddd5 | 680 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
681 | |
682 | if (!exclusion_string) { | |
683 | PERROR("Cannot allocate exclusion_string"); | |
684 | error = 1; | |
685 | goto end; | |
686 | } | |
9c48cab3 | 687 | MSG("All %s events%s are enabled in channel %s", |
28ab034a JG |
688 | lttng_domain_type_str(dom.type), |
689 | exclusion_string, | |
690 | print_channel_name(channel_name)); | |
9c48cab3 | 691 | free(exclusion_string); |
025faf73 DG |
692 | } |
693 | break; | |
694 | default: | |
695 | /* | |
696 | * We should not be here since lttng_enable_event should have | |
697 | * failed on the event type. | |
698 | */ | |
699 | goto error; | |
57064ada | 700 | } |
f3ed775e | 701 | } |
89476427 | 702 | |
025faf73 | 703 | if (opt_filter) { |
28ab034a JG |
704 | command_ret = lttng_enable_event_with_exclusions( |
705 | handle, | |
706 | ev, | |
707 | channel_name, | |
708 | opt_filter, | |
709 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
710 | (char **) exclusions.array.buffer.data); | |
89476427 JRJ |
711 | if (command_ret < 0) { |
712 | switch (-command_ret) { | |
16363652 | 713 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 714 | WARN("Filter on all events is already enabled" |
28ab034a JG |
715 | " (channel %s, session %s)", |
716 | print_channel_name(channel_name), | |
bf1413aa | 717 | session_name.c_str()); |
89476427 | 718 | warn = 1; |
16363652 | 719 | break; |
45d5d421 CB |
720 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
721 | { | |
28ab034a JG |
722 | const char *msg = |
723 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 724 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
725 | msg, |
726 | print_channel_name(channel_name), | |
bf1413aa | 727 | session_name.c_str(), |
28ab034a | 728 | opt_filter); |
45d5d421 CB |
729 | error = 1; |
730 | break; | |
731 | } | |
16363652 | 732 | default: |
85076754 | 733 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
734 | lttng_strerror(command_ret), |
735 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
736 | print_raw_channel_name(channel_name) : | |
737 | print_channel_name(channel_name), | |
bf1413aa | 738 | session_name.c_str(), |
28ab034a | 739 | opt_filter); |
89476427 | 740 | error = 1; |
16363652 DG |
741 | break; |
742 | } | |
89476427 | 743 | error_holder = command_ret; |
16363652 | 744 | } else { |
91744e14 | 745 | ev->filter = 1; |
16363652 DG |
746 | MSG("Filter '%s' successfully set", opt_filter); |
747 | } | |
748 | } | |
89476427 JRJ |
749 | |
750 | if (lttng_opt_mi) { | |
751 | /* The wildcard * is used for kernel and ust domain to | |
752 | * represent ALL. We copy * in event name to force the wildcard use | |
753 | * for kernel domain | |
754 | * | |
755 | * Note: this is strictly for semantic and printing while in | |
756 | * machine interface mode. | |
757 | */ | |
91744e14 | 758 | strcpy(ev->name, "*"); |
89476427 JRJ |
759 | |
760 | /* If we reach here the events are enabled */ | |
761 | if (!error && !warn) { | |
91744e14 | 762 | ev->enabled = 1; |
89476427 | 763 | } else { |
91744e14 | 764 | ev->enabled = 0; |
89476427 JRJ |
765 | success = 0; |
766 | } | |
8884bbc1 | 767 | ret = mi_lttng_event(writer.get(), ev, 1, handle->domain.type); |
89476427 JRJ |
768 | if (ret) { |
769 | ret = CMD_ERROR; | |
770 | goto error; | |
771 | } | |
772 | ||
773 | /* print exclusion */ | |
e358ddd5 | 774 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
775 | if (ret) { |
776 | ret = CMD_ERROR; | |
777 | goto error; | |
778 | } | |
779 | ||
780 | /* Success ? */ | |
28ab034a | 781 | ret = mi_lttng_writer_write_element_bool( |
8884bbc1 | 782 | writer.get(), mi_lttng_element_command_success, success); |
89476427 JRJ |
783 | if (ret) { |
784 | ret = CMD_ERROR; | |
785 | goto error; | |
786 | } | |
787 | ||
788 | /* Close event element */ | |
8884bbc1 | 789 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
790 | if (ret) { |
791 | ret = CMD_ERROR; | |
792 | goto error; | |
793 | } | |
794 | } | |
795 | ||
8c9ae521 | 796 | goto end; |
f3ed775e DG |
797 | } |
798 | ||
799 | /* Strip event list */ | |
bf1413aa | 800 | for (const auto& pattern : patterns) { |
6181537c | 801 | /* Copy name and type of the event */ |
bf1413aa | 802 | strncpy(ev->name, pattern.c_str(), LTTNG_SYMBOL_NAME_LEN); |
91744e14 | 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) { | |
bf1413aa JG |
808 | DBG_FMT("Enabling kernel event: pattern=`{}`, channel_name=`{}`", |
809 | pattern, | |
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", | |
bf1413aa | 880 | pattern.c_str(), |
28ab034a JG |
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 | 889 | ev->type = LTTNG_EVENT_TRACEPOINT; |
bf1413aa | 890 | strncpy(ev->name, pattern.c_str(), LTTNG_SYMBOL_NAME_LEN); |
91744e14 | 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( |
bf1413aa | 914 | pattern.c_str(), 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 | 986 | ev->type = LTTNG_EVENT_TRACEPOINT; |
bf1413aa | 987 | strncpy(ev->name, pattern.c_str(), LTTNG_SYMBOL_NAME_LEN); |
91744e14 | 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)", |
bf1413aa | 1014 | pattern.c_str(), |
28ab034a JG |
1015 | exclusion_string, |
1016 | print_channel_name(channel_name), | |
bf1413aa | 1017 | session_name.c_str()); |
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)", | |
bf1413aa | 1025 | pattern.c_str(), |
28ab034a JG |
1026 | exclusion_string, |
1027 | msg, | |
1028 | print_channel_name(channel_name), | |
bf1413aa | 1029 | session_name.c_str()); |
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)", | |
bf1413aa | 1035 | pattern.c_str(), |
28ab034a | 1036 | print_channel_name(channel_name), |
bf1413aa | 1037 | session_name.c_str()); |
dcabc190 FD |
1038 | error = 1; |
1039 | break; | |
025faf73 | 1040 | default: |
28ab034a | 1041 | ERR("Event %s%s: %s (channel %s, session %s)", |
bf1413aa | 1042 | pattern.c_str(), |
28ab034a JG |
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), | |
bf1413aa | 1048 | session_name.c_str()); |
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 | 1058 | lttng_domain_type_str(dom.type), |
bf1413aa | 1059 | pattern.c_str(), |
28ab034a JG |
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 | 1071 | lttng_domain_type_str(dom.type), |
bf1413aa | 1072 | pattern.c_str(), |
28ab034a | 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 | 1105 | " (channel %s, session %s)", |
bf1413aa | 1106 | pattern.c_str(), |
28ab034a JG |
1107 | exclusion_string, |
1108 | print_channel_name(channel_name), | |
bf1413aa | 1109 | session_name.c_str()); |
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), | |
bf1413aa | 1121 | session_name.c_str(), |
28ab034a | 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), | |
bf1413aa | 1134 | session_name.c_str(), |
28ab034a | 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", |
bf1413aa | 1143 | pattern.c_str(), |
28ab034a JG |
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 | ||
89476427 JRJ |
1187 | /* Reset warn, error and success */ |
1188 | success = 1; | |
f3ed775e DG |
1189 | } |
1190 | ||
8c9ae521 | 1191 | end: |
89476427 JRJ |
1192 | /* Close Mi */ |
1193 | if (lttng_opt_mi) { | |
1194 | /* Close events element */ | |
8884bbc1 | 1195 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
1196 | if (ret) { |
1197 | ret = CMD_ERROR; | |
1198 | goto error; | |
1199 | } | |
1200 | } | |
f3ed775e | 1201 | error: |
ae856491 DG |
1202 | if (warn) { |
1203 | ret = CMD_WARNING; | |
1204 | } | |
89476427 JRJ |
1205 | if (error) { |
1206 | ret = CMD_ERROR; | |
1207 | } | |
cd80958d | 1208 | lttng_destroy_handle(handle); |
e358ddd5 | 1209 | lttng_dynamic_pointer_array_reset(&exclusions); |
0c4e727b | 1210 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1211 | |
89476427 JRJ |
1212 | /* Overwrite ret with error_holder if there was an actual error with |
1213 | * enabling an event. | |
1214 | */ | |
1215 | ret = error_holder ? error_holder : ret; | |
1216 | ||
91744e14 | 1217 | lttng_event_destroy(ev); |
f3ed775e DG |
1218 | return ret; |
1219 | } | |
1220 | ||
c926bb36 JG |
1221 | void _poptContextFree_deleter_func(poptContext ctx) |
1222 | { | |
1223 | poptFreeContext(ctx); | |
1224 | } | |
1225 | ||
d512607f JG |
1226 | } /* namespace */ |
1227 | ||
bf1413aa | 1228 | int validate_exclusion_list(const char *pattern, |
d512607f JG |
1229 | const struct lttng_dynamic_pointer_array *exclusions) |
1230 | { | |
1231 | int ret; | |
1232 | ||
1233 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
bf1413aa JG |
1234 | if (!strutils_is_star_glob_pattern(pattern)) { |
1235 | ERR("Event %s: Exclusions can only be used with a globbing pattern", pattern); | |
d512607f JG |
1236 | goto error; |
1237 | } | |
1238 | ||
1239 | /* | |
1240 | * If the event name is a star-at-end only globbing pattern, | |
1241 | * then we can validate the individual exclusions. Otherwise | |
1242 | * all exclusions are passed to the session daemon. | |
1243 | */ | |
bf1413aa | 1244 | if (strutils_is_star_at_the_end_only_glob_pattern(pattern)) { |
d512607f JG |
1245 | size_t i, num_exclusions; |
1246 | ||
1247 | num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
1248 | ||
1249 | for (i = 0; i < num_exclusions; i++) { | |
1250 | const char *exclusion = | |
1251 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, | |
1252 | i); | |
1253 | ||
1254 | if (!strutils_is_star_glob_pattern(exclusion) || | |
1255 | strutils_is_star_at_the_end_only_glob_pattern(exclusion)) { | |
bf1413aa | 1256 | ret = check_exclusion_subsets(pattern, exclusion); |
d512607f JG |
1257 | if (ret) { |
1258 | goto error; | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | ret = 0; | |
1265 | goto end; | |
1266 | ||
1267 | error: | |
1268 | ret = -1; | |
1269 | ||
1270 | end: | |
1271 | return ret; | |
1272 | } | |
1273 | ||
f3ed775e | 1274 | /* |
6181537c | 1275 | * Add event to trace session |
f3ed775e DG |
1276 | */ |
1277 | int cmd_enable_events(int argc, const char **argv) | |
1278 | { | |
89476427 | 1279 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
bf1413aa | 1280 | std::string session_name; |
cd9adb8b JG |
1281 | const char *arg_event_list = nullptr; |
1282 | const char *leftover = nullptr; | |
de044b7a | 1283 | int event_type = -1; |
bf1413aa JG |
1284 | event_rule_patterns patterns; |
1285 | std::stringstream event_list_arg_stream(arg_event_list); | |
f3ed775e | 1286 | |
c926bb36 JG |
1287 | auto pc = lttng::make_unique_wrapper<poptContext_s, _poptContextFree_deleter_func>( |
1288 | poptGetContext(nullptr, argc, argv, long_options, 0)); | |
1289 | poptReadDefaultConfig(pc.get(), 0); | |
f3ed775e DG |
1290 | |
1291 | /* Default event type */ | |
7a3d1328 | 1292 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e | 1293 | |
c926bb36 | 1294 | while ((opt = poptGetNextOpt(pc.get())) != -1) { |
f3ed775e DG |
1295 | switch (opt) { |
1296 | case OPT_HELP: | |
4ba92f18 | 1297 | SHOW_HELP(); |
f3ed775e | 1298 | goto end; |
f3ed775e | 1299 | case OPT_TRACEPOINT: |
e6ddca71 | 1300 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1301 | break; |
cf0e5467 | 1302 | case OPT_PROBE: |
7d29a247 | 1303 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1304 | break; |
dcabc190 FD |
1305 | case OPT_USERSPACE_PROBE: |
1306 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1307 | break; | |
f3ed775e DG |
1308 | case OPT_FUNCTION: |
1309 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1310 | break; |
a54bd42d MD |
1311 | case OPT_SYSCALL: |
1312 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1313 | break; |
eeac7d46 MD |
1314 | case OPT_USERSPACE: |
1315 | opt_userspace = 1; | |
eeac7d46 | 1316 | break; |
0cda4f28 | 1317 | case OPT_LOGLEVEL: |
8005f29a | 1318 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
c926bb36 | 1319 | opt_loglevel = poptGetOptArg(pc.get()); |
0cda4f28 MD |
1320 | break; |
1321 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1322 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
c926bb36 | 1323 | opt_loglevel = poptGetOptArg(pc.get()); |
13dce3b7 | 1324 | break; |
679b4943 SM |
1325 | case OPT_LIST_OPTIONS: |
1326 | list_cmd_options(stdout, long_options); | |
679b4943 | 1327 | goto end; |
53a80697 MD |
1328 | case OPT_FILTER: |
1329 | break; | |
fac3366c JI |
1330 | case OPT_EXCLUDE: |
1331 | break; | |
f3ed775e | 1332 | default: |
f3ed775e DG |
1333 | ret = CMD_UNDEFINED; |
1334 | goto end; | |
1335 | } | |
de044b7a DG |
1336 | |
1337 | /* Validate event type. Multiple event type are not supported. */ | |
1338 | if (event_type == -1) { | |
1339 | event_type = opt_event_type; | |
1340 | } else { | |
1341 | if (event_type != opt_event_type) { | |
1342 | ERR("Multiple event type not supported."); | |
1343 | ret = CMD_ERROR; | |
1344 | goto end; | |
1345 | } | |
1346 | } | |
f3ed775e DG |
1347 | } |
1348 | ||
3ecec76a | 1349 | ret = print_missing_or_multiple_domains( |
28ab034a | 1350 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python, true); |
3ecec76a PP |
1351 | if (ret) { |
1352 | ret = CMD_ERROR; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
89476427 JRJ |
1356 | /* Mi check */ |
1357 | if (lttng_opt_mi) { | |
8884bbc1 | 1358 | writer = mi_writer_uptr(mi_lttng_writer_create(fileno(stdout), lttng_opt_mi)); |
89476427 JRJ |
1359 | if (!writer) { |
1360 | ret = -LTTNG_ERR_NOMEM; | |
1361 | goto end; | |
1362 | } | |
1363 | ||
1364 | /* Open command element */ | |
8884bbc1 JG |
1365 | ret = mi_lttng_writer_command_open(writer.get(), |
1366 | mi_lttng_element_command_enable_event); | |
89476427 JRJ |
1367 | if (ret) { |
1368 | ret = CMD_ERROR; | |
1369 | goto end; | |
1370 | } | |
1371 | ||
1372 | /* Open output element */ | |
8884bbc1 | 1373 | ret = mi_lttng_writer_open_element(writer.get(), mi_lttng_element_command_output); |
89476427 JRJ |
1374 | if (ret) { |
1375 | ret = CMD_ERROR; | |
1376 | goto end; | |
1377 | } | |
1378 | } | |
1379 | ||
c926bb36 | 1380 | arg_event_list = poptGetArg(pc.get()); |
cd9adb8b | 1381 | if (arg_event_list == nullptr && opt_enable_all == 0) { |
5b915816 | 1382 | ERR("Missing event name(s)."); |
ca1c3607 | 1383 | ret = CMD_ERROR; |
f3ed775e DG |
1384 | goto end; |
1385 | } | |
1386 | ||
bf1413aa JG |
1387 | for (std::string line; std::getline(event_list_arg_stream, line, ',');) { |
1388 | patterns.emplace_back(std::move(line)); | |
5b915816 MJ |
1389 | } |
1390 | ||
c926bb36 | 1391 | leftover = poptGetArg(pc.get()); |
68c7f6e5 JD |
1392 | if (leftover) { |
1393 | ERR("Unknown argument: %s", leftover); | |
1394 | ret = CMD_ERROR; | |
1395 | goto end; | |
1396 | } | |
1397 | ||
cd80958d | 1398 | if (!opt_session_name) { |
bf1413aa JG |
1399 | const auto rc_file_session_name = |
1400 | lttng::make_unique_wrapper<char, lttng::free>(get_session_name()); | |
1401 | ||
1402 | if (!rc_file_session_name) { | |
89476427 JRJ |
1403 | command_ret = CMD_ERROR; |
1404 | success = 0; | |
1405 | goto mi_closing; | |
cd80958d | 1406 | } |
bf1413aa JG |
1407 | |
1408 | session_name = rc_file_session_name.get(); | |
cd80958d DG |
1409 | } else { |
1410 | session_name = opt_session_name; | |
1411 | } | |
1412 | ||
bf1413aa | 1413 | command_ret = enable_events(session_name, patterns); |
89476427 JRJ |
1414 | if (command_ret) { |
1415 | success = 0; | |
1416 | goto mi_closing; | |
1417 | } | |
1418 | ||
1419 | mi_closing: | |
1420 | /* Mi closing */ | |
1421 | if (lttng_opt_mi) { | |
1422 | /* Close output element */ | |
8884bbc1 | 1423 | ret = mi_lttng_writer_close_element(writer.get()); |
89476427 JRJ |
1424 | if (ret) { |
1425 | ret = CMD_ERROR; | |
1426 | goto end; | |
1427 | } | |
1428 | ||
28ab034a | 1429 | ret = mi_lttng_writer_write_element_bool( |
8884bbc1 | 1430 | writer.get(), mi_lttng_element_command_success, success); |
89476427 JRJ |
1431 | if (ret) { |
1432 | ret = CMD_ERROR; | |
1433 | goto end; | |
1434 | } | |
1435 | ||
1436 | /* Command element close */ | |
8884bbc1 | 1437 | ret = mi_lttng_writer_command_close(writer.get()); |
89476427 JRJ |
1438 | if (ret) { |
1439 | ret = CMD_ERROR; | |
1440 | goto end; | |
1441 | } | |
1442 | } | |
f3ed775e DG |
1443 | |
1444 | end: | |
89476427 JRJ |
1445 | /* Overwrite ret if an error occurred in enable_events */ |
1446 | ret = command_ret ? command_ret : ret; | |
f3ed775e DG |
1447 | return ret; |
1448 | } |