Commit | Line | Data |
---|---|---|
f3ed775e | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
f3ed775e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f3ed775e | 5 | * |
f3ed775e DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
28ab034a JG |
9 | #include <common/compat/getenv.hpp> |
10 | #include <common/compat/string.hpp> | |
11 | #include <common/sessiond-comm/sessiond-comm.hpp> | |
12 | #include <common/string-utils/string-utils.hpp> | |
13 | #include <common/utils.hpp> | |
14 | ||
15 | #include <ctype.h> | |
16 | #include <inttypes.h> | |
f3ed775e DG |
17 | #include <popt.h> |
18 | #include <stdio.h> | |
19 | #include <stdlib.h> | |
f3ed775e DG |
20 | #include <sys/stat.h> |
21 | #include <sys/types.h> | |
22 | #include <unistd.h> | |
f3ed775e | 23 | |
89476427 | 24 | /* Mi dependancy */ |
28ab034a JG |
25 | #include "../command.hpp" |
26 | #include "../loglevel.hpp" | |
27 | #include "../uprobe.hpp" | |
28 | ||
c9e313bc | 29 | #include <common/mi-lttng.hpp> |
89476427 | 30 | |
c9e313bc SM |
31 | #include <lttng/domain-internal.hpp> |
32 | #include <lttng/event-internal.hpp> | |
7e8f2e9c | 33 | |
8ab7c0d9 | 34 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
28ab034a | 35 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" |
8ab7c0d9 MD |
36 | #endif |
37 | ||
f3ed775e | 38 | static int opt_event_type; |
0cda4f28 MD |
39 | static const char *opt_loglevel; |
40 | static int opt_loglevel_type; | |
6181537c | 41 | static int opt_kernel; |
5440dc42 | 42 | static char *opt_session_name; |
f3ed775e | 43 | static int opt_userspace; |
b9dfb167 | 44 | static int opt_jul; |
5cdb6027 | 45 | static int opt_log4j; |
0e115563 | 46 | static int opt_python; |
f3ed775e | 47 | static int opt_enable_all; |
cf0e5467 | 48 | static char *opt_probe; |
dcabc190 | 49 | static char *opt_userspace_probe; |
8f0d098b | 50 | static char *opt_function; |
f3ed775e | 51 | static char *opt_channel_name; |
53a80697 | 52 | static char *opt_filter; |
fac3366c | 53 | static char *opt_exclude; |
f3ed775e | 54 | |
4fc83d94 PP |
55 | #ifdef LTTNG_EMBED_HELP |
56 | static const char help_msg[] = | |
57 | #include <lttng-enable-event.1.h> | |
28ab034a | 58 | ; |
4fc83d94 PP |
59 | #endif |
60 | ||
f3ed775e DG |
61 | enum { |
62 | OPT_HELP = 1, | |
f3ed775e | 63 | OPT_TRACEPOINT, |
cf0e5467 | 64 | OPT_PROBE, |
dcabc190 | 65 | OPT_USERSPACE_PROBE, |
f3ed775e | 66 | OPT_FUNCTION, |
a54bd42d | 67 | OPT_SYSCALL, |
eeac7d46 | 68 | OPT_USERSPACE, |
0cda4f28 MD |
69 | OPT_LOGLEVEL, |
70 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 71 | OPT_LIST_OPTIONS, |
53a80697 | 72 | OPT_FILTER, |
fac3366c | 73 | OPT_EXCLUDE, |
f3ed775e DG |
74 | }; |
75 | ||
cd80958d | 76 | static struct lttng_handle *handle; |
89476427 | 77 | static struct mi_writer *writer; |
cd80958d | 78 | |
f3ed775e DG |
79 | static struct poptOption long_options[] = { |
80 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
28ab034a JG |
81 | { "help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0 }, |
82 | { "session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0 }, | |
83 | { "all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0 }, | |
84 | { "channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0 }, | |
85 | { "kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0 }, | |
86 | { "userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0 }, | |
87 | { "jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0 }, | |
88 | { "log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0 }, | |
89 | { "python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0 }, | |
90 | { "tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0 }, | |
91 | { "probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0 }, | |
92 | { "userspace-probe", 0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0 }, | |
93 | { "function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0 }, | |
94 | { "syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0 }, | |
95 | { "loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0 }, | |
96 | { "loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0 }, | |
97 | { "list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL }, | |
98 | { "filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0 }, | |
99 | { "exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0 }, | |
100 | { 0, 0, 0, 0, 0, 0, 0 } | |
f3ed775e DG |
101 | }; |
102 | ||
0d63dd19 | 103 | /* |
6181537c | 104 | * Parse probe options. |
0d63dd19 | 105 | */ |
cf0e5467 | 106 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 107 | { |
49d4e302 JRJ |
108 | int ret = CMD_SUCCESS; |
109 | int match; | |
8ff0bbd0 | 110 | char s_hex[19]; |
28ab034a | 111 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
112 | char name[LTTNG_SYMBOL_NAME_LEN]; |
113 | ||
114 | if (opt == NULL) { | |
49d4e302 | 115 | ret = CMD_ERROR; |
8f0d098b | 116 | goto end; |
0d63dd19 DG |
117 | } |
118 | ||
119 | /* Check for symbol+offset */ | |
28ab034a JG |
120 | match = sscanf(opt, |
121 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
122 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", | |
123 | name, | |
124 | s_hex); | |
49d4e302 | 125 | if (match == 2) { |
7d29a247 | 126 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 127 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 128 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 129 | if (*s_hex == '\0') { |
8ff0bbd0 | 130 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 131 | ret = CMD_ERROR; |
8f0d098b | 132 | goto end; |
0d63dd19 | 133 | } |
44e63aa7 | 134 | ev->attr.probe.offset = strtoull(s_hex, NULL, 0); |
cf0e5467 | 135 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 136 | ev->attr.probe.addr = 0; |
8f0d098b MD |
137 | goto end; |
138 | } | |
139 | ||
140 | /* Check for symbol */ | |
88c91427 | 141 | if (isalpha(name[0]) || name[0] == '_') { |
28ab034a | 142 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", name); |
49d4e302 | 143 | if (match == 1) { |
8f0d098b | 144 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 145 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
146 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
147 | ev->attr.probe.offset = 0; | |
148 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
149 | ev->attr.probe.addr = 0; | |
150 | goto end; | |
151 | } | |
0d63dd19 DG |
152 | } |
153 | ||
154 | /* Check for address */ | |
49d4e302 JRJ |
155 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
156 | if (match > 0) { | |
531be721 FD |
157 | /* |
158 | * Return an error if the first character of the tentative | |
159 | * address is NULL or not a digit. It can be "0" if the address | |
160 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
161 | */ | |
162 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
163 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 164 | ret = CMD_ERROR; |
8f0d098b | 165 | goto end; |
0d63dd19 | 166 | } |
44e63aa7 | 167 | ev->attr.probe.addr = strtoull(s_hex, NULL, 0); |
cf0e5467 | 168 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
169 | ev->attr.probe.offset = 0; |
170 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 171 | goto end; |
0d63dd19 DG |
172 | } |
173 | ||
174 | /* No match */ | |
49d4e302 | 175 | ret = CMD_ERROR; |
0d63dd19 | 176 | |
8f0d098b | 177 | end: |
0d63dd19 DG |
178 | return ret; |
179 | } | |
180 | ||
28ab034a | 181 | static const char *print_channel_name(const char *name) |
85076754 | 182 | { |
28ab034a | 183 | return name ?: DEFAULT_CHANNEL_NAME; |
85076754 MD |
184 | } |
185 | ||
28ab034a | 186 | static const char *print_raw_channel_name(const char *name) |
85076754 | 187 | { |
28ab034a | 188 | return name ?: "<default>"; |
85076754 MD |
189 | } |
190 | ||
89476427 JRJ |
191 | /* |
192 | * Mi print exlcusion list | |
193 | */ | |
28ab034a | 194 | static int mi_print_exclusion(const struct lttng_dynamic_pointer_array *exclusions) |
89476427 | 195 | { |
e358ddd5 JG |
196 | int ret; |
197 | size_t i; | |
198 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); | |
89476427 | 199 | |
a0377dfe | 200 | LTTNG_ASSERT(writer); |
89476427 JRJ |
201 | |
202 | if (count == 0) { | |
203 | ret = 0; | |
204 | goto end; | |
205 | } | |
e358ddd5 | 206 | |
89476427 JRJ |
207 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); |
208 | if (ret) { | |
209 | goto end; | |
210 | } | |
211 | ||
212 | for (i = 0; i < count; i++) { | |
28ab034a JG |
213 | const char *exclusion = |
214 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 215 | |
28ab034a JG |
216 | ret = mi_lttng_writer_write_element_string( |
217 | writer, config_element_exclusion, exclusion); | |
89476427 JRJ |
218 | if (ret) { |
219 | goto end; | |
220 | } | |
221 | } | |
222 | ||
223 | /* Close exclusions element */ | |
224 | ret = mi_lttng_writer_close_element(writer); | |
225 | ||
226 | end: | |
227 | return ret; | |
228 | } | |
229 | ||
9c48cab3 JI |
230 | /* |
231 | * Return allocated string for pretty-printing exclusion names. | |
232 | */ | |
28ab034a | 233 | static char *print_exclusions(const struct lttng_dynamic_pointer_array *exclusions) |
9c48cab3 JI |
234 | { |
235 | int length = 0; | |
e358ddd5 | 236 | size_t i; |
bfe36393 | 237 | const char preamble[] = " excluding "; |
9c48cab3 | 238 | char *ret; |
e358ddd5 | 239 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); |
9c48cab3 JI |
240 | |
241 | if (count == 0) { | |
242 | return strdup(""); | |
243 | } | |
244 | ||
e358ddd5 | 245 | /* Calculate total required length. */ |
9c48cab3 | 246 | for (i = 0; i < count; i++) { |
28ab034a JG |
247 | const char *exclusion = |
248 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 JG |
249 | |
250 | length += strlen(exclusion) + 4; | |
9c48cab3 JI |
251 | } |
252 | ||
bfe36393 | 253 | length += sizeof(preamble); |
64803277 | 254 | ret = calloc<char>(length); |
fd591b18 MD |
255 | if (!ret) { |
256 | return NULL; | |
257 | } | |
e358ddd5 | 258 | |
9c48cab3 JI |
259 | strncpy(ret, preamble, length); |
260 | for (i = 0; i < count; i++) { | |
28ab034a JG |
261 | const char *exclusion = |
262 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
e358ddd5 | 263 | |
9f449915 | 264 | strcat(ret, "\""); |
e358ddd5 | 265 | strcat(ret, exclusion); |
9f449915 | 266 | strcat(ret, "\""); |
9c48cab3 | 267 | if (i != count - 1) { |
9f449915 | 268 | strcat(ret, ", "); |
9c48cab3 JI |
269 | } |
270 | } | |
89476427 | 271 | |
9c48cab3 JI |
272 | return ret; |
273 | } | |
274 | ||
28ab034a | 275 | static int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 276 | { |
9f449915 PP |
277 | bool warn = false; |
278 | int ret = 0; | |
279 | const char *e = event_name; | |
280 | const char *x = exclusion; | |
281 | ||
282 | /* Scan both the excluder and the event letter by letter */ | |
283 | while (true) { | |
284 | if (*e == '\\') { | |
285 | if (*x != *e) { | |
286 | warn = true; | |
287 | goto end; | |
288 | } | |
748bde76 | 289 | |
9f449915 PP |
290 | e++; |
291 | x++; | |
292 | goto cmp_chars; | |
293 | } | |
294 | ||
295 | if (*x == '*') { | |
296 | /* Event is a subset of the excluder */ | |
297 | ERR("Event %s: %s excludes all events from %s", | |
28ab034a JG |
298 | event_name, |
299 | exclusion, | |
300 | event_name); | |
9f449915 PP |
301 | goto error; |
302 | } | |
303 | ||
304 | if (*e == '*') { | |
305 | /* | |
306 | * Reached the end of the event name before the | |
307 | * end of the exclusion: this is valid. | |
308 | */ | |
309 | goto end; | |
310 | } | |
311 | ||
28ab034a | 312 | cmp_chars: |
9f449915 PP |
313 | if (*x != *e) { |
314 | warn = true; | |
315 | break; | |
316 | } | |
317 | ||
318 | x++; | |
319 | e++; | |
748bde76 JI |
320 | } |
321 | ||
9f449915 | 322 | goto end; |
748bde76 | 323 | |
9f449915 PP |
324 | error: |
325 | ret = -1; | |
748bde76 | 326 | |
9f449915 PP |
327 | end: |
328 | if (warn) { | |
329 | WARN("Event %s: %s does not exclude any events from %s", | |
28ab034a JG |
330 | event_name, |
331 | exclusion, | |
332 | event_name); | |
9f449915 | 333 | } |
748bde76 | 334 | |
9f449915 PP |
335 | return ret; |
336 | } | |
337 | ||
e358ddd5 | 338 | int validate_exclusion_list(const char *event_name, |
28ab034a | 339 | const struct lttng_dynamic_pointer_array *exclusions) |
9f449915 | 340 | { |
b03a81fb | 341 | int ret; |
9f449915 PP |
342 | |
343 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
344 | if (!strutils_is_star_glob_pattern(event_name)) { | |
28ab034a | 345 | ERR("Event %s: Exclusions can only be used with a globbing pattern", event_name); |
9f449915 PP |
346 | goto error; |
347 | } | |
348 | ||
9f449915 PP |
349 | /* |
350 | * If the event name is a star-at-end only globbing pattern, | |
351 | * then we can validate the individual exclusions. Otherwise | |
352 | * all exclusions are passed to the session daemon. | |
353 | */ | |
354 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
e358ddd5 JG |
355 | size_t i, num_exclusions; |
356 | ||
357 | num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
358 | ||
359 | for (i = 0; i < num_exclusions; i++) { | |
360 | const char *exclusion = | |
28ab034a JG |
361 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, |
362 | i); | |
9f449915 | 363 | |
e358ddd5 | 364 | if (!strutils_is_star_glob_pattern(exclusion) || |
28ab034a | 365 | strutils_is_star_at_the_end_only_glob_pattern(exclusion)) { |
e358ddd5 | 366 | ret = check_exclusion_subsets(event_name, exclusion); |
9f449915 | 367 | if (ret) { |
5ef79758 MD |
368 | goto error; |
369 | } | |
748bde76 | 370 | } |
748bde76 JI |
371 | } |
372 | } | |
9f449915 | 373 | |
b03a81fb SM |
374 | ret = 0; |
375 | goto end; | |
376 | ||
377 | error: | |
378 | ret = -1; | |
379 | ||
380 | end: | |
381 | return ret; | |
382 | } | |
383 | ||
384 | static int create_exclusion_list_and_validate(const char *event_name, | |
28ab034a JG |
385 | const char *exclusions_arg, |
386 | struct lttng_dynamic_pointer_array *exclusions) | |
b03a81fb SM |
387 | { |
388 | int ret = 0; | |
b03a81fb SM |
389 | |
390 | /* Split exclusions. */ | |
e358ddd5 JG |
391 | ret = strutils_split(exclusions_arg, ',', true, exclusions); |
392 | if (ret < 0) { | |
b03a81fb SM |
393 | goto error; |
394 | } | |
395 | ||
28ab034a | 396 | if (validate_exclusion_list(event_name, exclusions) != 0) { |
b03a81fb SM |
397 | goto error; |
398 | } | |
399 | ||
748bde76 | 400 | goto end; |
9f449915 | 401 | |
748bde76 | 402 | error: |
9f449915 | 403 | ret = -1; |
e358ddd5 | 404 | lttng_dynamic_pointer_array_reset(exclusions); |
9f449915 | 405 | |
748bde76 | 406 | end: |
748bde76 JI |
407 | return ret; |
408 | } | |
502bbe89 | 409 | |
e358ddd5 | 410 | static void warn_on_truncated_exclusion_names(const struct lttng_dynamic_pointer_array *exclusions, |
28ab034a | 411 | int *warn) |
502bbe89 | 412 | { |
e358ddd5 JG |
413 | size_t i; |
414 | const size_t num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
415 | ||
416 | for (i = 0; i < num_exclusions; i++) { | |
28ab034a JG |
417 | const char *const exclusion = |
418 | (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); | |
502bbe89 | 419 | |
e358ddd5 | 420 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { |
28ab034a | 421 | WARN("Event exclusion \"%s\" will be truncated", exclusion); |
502bbe89 PP |
422 | *warn = 1; |
423 | } | |
424 | } | |
425 | } | |
426 | ||
f3ed775e | 427 | /* |
6181537c | 428 | * Enabling event using the lttng API. |
89476427 | 429 | * Note: in case of error only the last error code will be return. |
f3ed775e | 430 | */ |
5b915816 | 431 | static int enable_events(char *session_name, char *event_list) |
f3ed775e | 432 | { |
89476427 JRJ |
433 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
434 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 435 | char *event_name, *channel_name = NULL; |
91744e14 | 436 | struct lttng_event *ev; |
e358ddd5 JG |
437 | struct lttng_domain dom = {}; |
438 | struct lttng_dynamic_pointer_array exclusions; | |
0c4e727b | 439 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 440 | |
e358ddd5 | 441 | lttng_dynamic_pointer_array_init(&exclusions, NULL); |
441c16a7 | 442 | |
91744e14 FD |
443 | ev = lttng_event_create(); |
444 | if (!ev) { | |
445 | ret = CMD_ERROR; | |
446 | goto error; | |
447 | } | |
448 | ||
53a80697 | 449 | if (opt_kernel) { |
67b58630 JG |
450 | if (opt_loglevel) { |
451 | WARN("Kernel loglevels are not supported."); | |
452 | } | |
53a80697 MD |
453 | } |
454 | ||
7d29a247 DG |
455 | /* Create lttng domain */ |
456 | if (opt_kernel) { | |
457 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 458 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 459 | } else if (opt_userspace) { |
2bdd86d4 | 460 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 461 | /* Default. */ |
8692d4e5 | 462 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
463 | } else if (opt_jul) { |
464 | dom.type = LTTNG_DOMAIN_JUL; | |
465 | /* Default. */ | |
466 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
467 | } else if (opt_log4j) { |
468 | dom.type = LTTNG_DOMAIN_LOG4J; | |
469 | /* Default. */ | |
470 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
471 | } else if (opt_python) { |
472 | dom.type = LTTNG_DOMAIN_PYTHON; | |
473 | /* Default. */ | |
474 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 475 | } else { |
3ecec76a | 476 | /* Checked by the caller. */ |
a0377dfe | 477 | abort(); |
2bdd86d4 | 478 | } |
7d29a247 | 479 | |
8b08c525 AB |
480 | if (opt_exclude) { |
481 | switch (dom.type) { | |
482 | case LTTNG_DOMAIN_KERNEL: | |
483 | case LTTNG_DOMAIN_JUL: | |
484 | case LTTNG_DOMAIN_LOG4J: | |
485 | case LTTNG_DOMAIN_PYTHON: | |
486 | ERR("Event name exclusions are not yet implemented for %s events", | |
28ab034a | 487 | lttng_domain_type_str(dom.type)); |
8b08c525 AB |
488 | ret = CMD_ERROR; |
489 | goto error; | |
490 | case LTTNG_DOMAIN_UST: | |
491 | /* Exclusions supported */ | |
492 | break; | |
493 | default: | |
a0377dfe | 494 | abort(); |
8b08c525 | 495 | } |
d5dd17fd JI |
496 | } |
497 | ||
4fd2697f FD |
498 | /* |
499 | * Adding a filter to a probe, function or userspace-probe would be | |
500 | * denied by the kernel tracer as it's not supported at the moment. We | |
501 | * do an early check here to warn the user. | |
502 | */ | |
503 | if (opt_filter && opt_kernel) { | |
504 | switch (opt_event_type) { | |
505 | case LTTNG_EVENT_ALL: | |
506 | case LTTNG_EVENT_TRACEPOINT: | |
507 | case LTTNG_EVENT_SYSCALL: | |
508 | break; | |
509 | case LTTNG_EVENT_PROBE: | |
510 | case LTTNG_EVENT_USERSPACE_PROBE: | |
511 | case LTTNG_EVENT_FUNCTION: | |
512 | ERR("Filter expressions are not supported for %s events", | |
28ab034a | 513 | get_event_type_str((lttng_event_type) opt_event_type)); |
4fd2697f FD |
514 | ret = CMD_ERROR; |
515 | goto error; | |
516 | default: | |
517 | ret = CMD_UNDEFINED; | |
518 | goto error; | |
519 | } | |
520 | } | |
521 | ||
85076754 | 522 | channel_name = opt_channel_name; |
ae856491 | 523 | |
cd80958d DG |
524 | handle = lttng_create_handle(session_name, &dom); |
525 | if (handle == NULL) { | |
526 | ret = -1; | |
527 | goto error; | |
528 | } | |
1aef21b6 | 529 | |
89476427 JRJ |
530 | /* Prepare Mi */ |
531 | if (lttng_opt_mi) { | |
532 | /* Open a events element */ | |
533 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
534 | if (ret) { | |
535 | ret = CMD_ERROR; | |
536 | goto error; | |
537 | } | |
538 | } | |
539 | ||
cd80958d | 540 | if (opt_enable_all) { |
8c9ae521 | 541 | /* Default setup for enable all */ |
75e8c5ab | 542 | if (opt_kernel) { |
48a40005 | 543 | ev->type = (lttng_event_type) opt_event_type; |
91744e14 | 544 | strcpy(ev->name, "*"); |
300b8fd5 | 545 | /* kernel loglevels not implemented */ |
91744e14 | 546 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 547 | } else { |
91744e14 FD |
548 | ev->type = LTTNG_EVENT_TRACEPOINT; |
549 | strcpy(ev->name, "*"); | |
48a40005 | 550 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
300b8fd5 | 551 | if (opt_loglevel) { |
7e8f2e9c JG |
552 | int name_search_ret; |
553 | ||
a0377dfe | 554 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 555 | |
b2064f54 | 556 | if (opt_userspace) { |
7e8f2e9c JG |
557 | enum lttng_loglevel loglevel; |
558 | ||
28ab034a JG |
559 | name_search_ret = |
560 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 561 | ev->loglevel = (int) loglevel; |
b2064f54 | 562 | } else if (opt_jul) { |
7e8f2e9c JG |
563 | enum lttng_loglevel_jul loglevel; |
564 | ||
28ab034a JG |
565 | name_search_ret = |
566 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 567 | ev->loglevel = (int) loglevel; |
5cdb6027 | 568 | } else if (opt_log4j) { |
7e8f2e9c JG |
569 | enum lttng_loglevel_log4j loglevel; |
570 | ||
28ab034a JG |
571 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
572 | &loglevel); | |
7e8f2e9c | 573 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
574 | } else { |
575 | /* python domain. */ | |
7e8f2e9c JG |
576 | enum lttng_loglevel_python loglevel; |
577 | ||
28ab034a JG |
578 | name_search_ret = loglevel_python_name_to_value( |
579 | opt_loglevel, &loglevel); | |
7e8f2e9c | 580 | ev->loglevel = (int) loglevel; |
b2064f54 | 581 | } |
7e8f2e9c JG |
582 | |
583 | if (name_search_ret == -1) { | |
300b8fd5 | 584 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 585 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
586 | goto error; |
587 | } | |
22e25b71 | 588 | } else { |
a0377dfe | 589 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 590 | if (opt_userspace) { |
91744e14 | 591 | ev->loglevel = -1; |
34aa3685 | 592 | } else if (opt_jul) { |
91744e14 | 593 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 594 | } else if (opt_log4j) { |
91744e14 | 595 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 596 | } else if (opt_python) { |
91744e14 | 597 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 598 | } |
300b8fd5 | 599 | } |
75e8c5ab | 600 | } |
8c9ae521 | 601 | |
7ed70bc9 | 602 | if (opt_exclude) { |
28ab034a | 603 | ret = create_exclusion_list_and_validate("*", opt_exclude, &exclusions); |
9f449915 PP |
604 | if (ret) { |
605 | ret = CMD_ERROR; | |
7ed70bc9 JI |
606 | goto error; |
607 | } | |
502bbe89 | 608 | |
91744e14 | 609 | ev->exclusion = 1; |
28ab034a | 610 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 | 611 | } |
025faf73 | 612 | if (!opt_filter) { |
28ab034a JG |
613 | ret = lttng_enable_event_with_exclusions( |
614 | handle, | |
615 | ev, | |
616 | channel_name, | |
617 | NULL, | |
618 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
619 | (char **) exclusions.array.buffer.data); | |
025faf73 DG |
620 | if (ret < 0) { |
621 | switch (-ret) { | |
622 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
623 | WARN("Kernel events already enabled (channel %s, session %s)", | |
28ab034a JG |
624 | print_channel_name(channel_name), |
625 | session_name); | |
89476427 | 626 | warn = 1; |
025faf73 | 627 | break; |
45d5d421 CB |
628 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
629 | { | |
28ab034a JG |
630 | const char *msg = |
631 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 632 | ERR("Events: %s (channel %s, session %s)", |
28ab034a JG |
633 | msg, |
634 | print_channel_name(channel_name), | |
635 | session_name); | |
45d5d421 CB |
636 | error = 1; |
637 | break; | |
638 | } | |
025faf73 DG |
639 | default: |
640 | ERR("Events: %s (channel %s, session %s)", | |
28ab034a JG |
641 | lttng_strerror(ret), |
642 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
643 | print_raw_channel_name(channel_name) : | |
644 | print_channel_name(channel_name), | |
645 | session_name); | |
89476427 | 646 | error = 1; |
025faf73 DG |
647 | break; |
648 | } | |
649 | goto end; | |
42224349 | 650 | } |
8c9ae521 | 651 | |
025faf73 DG |
652 | switch (opt_event_type) { |
653 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 654 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 655 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
656 | |
657 | if (!exclusion_string) { | |
658 | PERROR("Cannot allocate exclusion_string"); | |
659 | error = 1; | |
660 | goto end; | |
661 | } | |
9c48cab3 | 662 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
663 | lttng_domain_type_str(dom.type), |
664 | exclusion_string, | |
665 | print_channel_name(channel_name), | |
666 | opt_loglevel); | |
9c48cab3 | 667 | free(exclusion_string); |
025faf73 | 668 | } else { |
e358ddd5 | 669 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
670 | |
671 | if (!exclusion_string) { | |
672 | PERROR("Cannot allocate exclusion_string"); | |
673 | error = 1; | |
674 | goto end; | |
675 | } | |
9c48cab3 | 676 | MSG("All %s tracepoints%s are enabled in channel %s", |
28ab034a JG |
677 | lttng_domain_type_str(dom.type), |
678 | exclusion_string, | |
679 | print_channel_name(channel_name)); | |
9c48cab3 | 680 | free(exclusion_string); |
025faf73 DG |
681 | } |
682 | break; | |
683 | case LTTNG_EVENT_SYSCALL: | |
684 | if (opt_kernel) { | |
6e911cad | 685 | MSG("All %s system calls are enabled in channel %s", |
28ab034a JG |
686 | lttng_domain_type_str(dom.type), |
687 | print_channel_name(channel_name)); | |
025faf73 DG |
688 | } |
689 | break; | |
690 | case LTTNG_EVENT_ALL: | |
67b58630 | 691 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 692 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
693 | |
694 | if (!exclusion_string) { | |
695 | PERROR("Cannot allocate exclusion_string"); | |
696 | error = 1; | |
697 | goto end; | |
698 | } | |
9c48cab3 | 699 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
28ab034a JG |
700 | lttng_domain_type_str(dom.type), |
701 | exclusion_string, | |
702 | print_channel_name(channel_name), | |
703 | opt_loglevel); | |
9c48cab3 | 704 | free(exclusion_string); |
025faf73 | 705 | } else { |
e358ddd5 | 706 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
707 | |
708 | if (!exclusion_string) { | |
709 | PERROR("Cannot allocate exclusion_string"); | |
710 | error = 1; | |
711 | goto end; | |
712 | } | |
9c48cab3 | 713 | MSG("All %s events%s are enabled in channel %s", |
28ab034a JG |
714 | lttng_domain_type_str(dom.type), |
715 | exclusion_string, | |
716 | print_channel_name(channel_name)); | |
9c48cab3 | 717 | free(exclusion_string); |
025faf73 DG |
718 | } |
719 | break; | |
720 | default: | |
721 | /* | |
722 | * We should not be here since lttng_enable_event should have | |
723 | * failed on the event type. | |
724 | */ | |
725 | goto error; | |
57064ada | 726 | } |
f3ed775e | 727 | } |
89476427 | 728 | |
025faf73 | 729 | if (opt_filter) { |
28ab034a JG |
730 | command_ret = lttng_enable_event_with_exclusions( |
731 | handle, | |
732 | ev, | |
733 | channel_name, | |
734 | opt_filter, | |
735 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
736 | (char **) exclusions.array.buffer.data); | |
89476427 JRJ |
737 | if (command_ret < 0) { |
738 | switch (-command_ret) { | |
16363652 | 739 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 740 | WARN("Filter on all events is already enabled" |
28ab034a JG |
741 | " (channel %s, session %s)", |
742 | print_channel_name(channel_name), | |
743 | session_name); | |
89476427 | 744 | warn = 1; |
16363652 | 745 | break; |
45d5d421 CB |
746 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
747 | { | |
28ab034a JG |
748 | const char *msg = |
749 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
45d5d421 | 750 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
751 | msg, |
752 | print_channel_name(channel_name), | |
753 | session_name, | |
754 | opt_filter); | |
45d5d421 CB |
755 | error = 1; |
756 | break; | |
757 | } | |
16363652 | 758 | default: |
85076754 | 759 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
28ab034a JG |
760 | lttng_strerror(command_ret), |
761 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
762 | print_raw_channel_name(channel_name) : | |
763 | print_channel_name(channel_name), | |
764 | session_name, | |
765 | opt_filter); | |
89476427 | 766 | error = 1; |
16363652 DG |
767 | break; |
768 | } | |
89476427 | 769 | error_holder = command_ret; |
16363652 | 770 | } else { |
91744e14 | 771 | ev->filter = 1; |
16363652 DG |
772 | MSG("Filter '%s' successfully set", opt_filter); |
773 | } | |
774 | } | |
89476427 JRJ |
775 | |
776 | if (lttng_opt_mi) { | |
777 | /* The wildcard * is used for kernel and ust domain to | |
778 | * represent ALL. We copy * in event name to force the wildcard use | |
779 | * for kernel domain | |
780 | * | |
781 | * Note: this is strictly for semantic and printing while in | |
782 | * machine interface mode. | |
783 | */ | |
91744e14 | 784 | strcpy(ev->name, "*"); |
89476427 JRJ |
785 | |
786 | /* If we reach here the events are enabled */ | |
787 | if (!error && !warn) { | |
91744e14 | 788 | ev->enabled = 1; |
89476427 | 789 | } else { |
91744e14 | 790 | ev->enabled = 0; |
89476427 JRJ |
791 | success = 0; |
792 | } | |
91744e14 | 793 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
794 | if (ret) { |
795 | ret = CMD_ERROR; | |
796 | goto error; | |
797 | } | |
798 | ||
799 | /* print exclusion */ | |
e358ddd5 | 800 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
801 | if (ret) { |
802 | ret = CMD_ERROR; | |
803 | goto error; | |
804 | } | |
805 | ||
806 | /* Success ? */ | |
28ab034a JG |
807 | ret = mi_lttng_writer_write_element_bool( |
808 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
809 | if (ret) { |
810 | ret = CMD_ERROR; | |
811 | goto error; | |
812 | } | |
813 | ||
814 | /* Close event element */ | |
815 | ret = mi_lttng_writer_close_element(writer); | |
816 | if (ret) { | |
817 | ret = CMD_ERROR; | |
818 | goto error; | |
819 | } | |
820 | } | |
821 | ||
8c9ae521 | 822 | goto end; |
f3ed775e DG |
823 | } |
824 | ||
825 | /* Strip event list */ | |
5b915816 | 826 | event_name = strtok(event_list, ","); |
f3ed775e | 827 | while (event_name != NULL) { |
6181537c | 828 | /* Copy name and type of the event */ |
91744e14 FD |
829 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
830 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
48a40005 | 831 | ev->type = (lttng_event_type) opt_event_type; |
6181537c | 832 | |
f3ed775e DG |
833 | /* Kernel tracer action */ |
834 | if (opt_kernel) { | |
835 | DBG("Enabling kernel event %s for channel %s", | |
28ab034a JG |
836 | event_name, |
837 | print_channel_name(channel_name)); | |
f3ed775e DG |
838 | |
839 | switch (opt_event_type) { | |
28ab034a | 840 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
29c62722 | 841 | /* If event name differs from *, select tracepoint. */ |
91744e14 FD |
842 | if (strcmp(ev->name, "*")) { |
843 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
844 | } |
845 | break; | |
e6ddca71 | 846 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 847 | break; |
7d29a247 | 848 | case LTTNG_EVENT_PROBE: |
91744e14 | 849 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 850 | if (ret) { |
cf0e5467 | 851 | ERR("Unable to parse probe options"); |
91744e14 | 852 | ret = CMD_ERROR; |
0d63dd19 DG |
853 | goto error; |
854 | } | |
f3ed775e | 855 | break; |
dcabc190 | 856 | case LTTNG_EVENT_USERSPACE_PROBE: |
a0377dfe | 857 | LTTNG_ASSERT(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
0c4e727b JR |
858 | |
859 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 860 | if (ret) { |
36aa2f64 FD |
861 | switch (ret) { |
862 | case CMD_UNSUPPORTED: | |
863 | /* | |
864 | * Error message describing | |
865 | * what is not supported was | |
866 | * printed in the function. | |
867 | */ | |
868 | break; | |
869 | case CMD_ERROR: | |
870 | default: | |
871 | ERR("Unable to parse userspace probe options"); | |
872 | break; | |
873 | } | |
dcabc190 FD |
874 | goto error; |
875 | } | |
0c4e727b JR |
876 | |
877 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
878 | if (ret) { | |
879 | WARN("Failed to set probe location on event"); | |
880 | ret = CMD_ERROR; | |
881 | goto error; | |
882 | } | |
883 | ||
884 | /* Ownership of the uprobe location was transferred to the event. */ | |
885 | uprobe_loc = NULL; | |
dcabc190 | 886 | break; |
f3ed775e | 887 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 888 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 889 | if (ret) { |
8f0d098b | 890 | ERR("Unable to parse function probe options"); |
91744e14 | 891 | ret = CMD_ERROR; |
8f0d098b MD |
892 | goto error; |
893 | } | |
894 | break; | |
a54bd42d | 895 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 896 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 897 | break; |
f3ed775e | 898 | default: |
1ab1ea0b | 899 | ret = CMD_UNDEFINED; |
f3ed775e DG |
900 | goto error; |
901 | } | |
0cda4f28 | 902 | |
0cda4f28 | 903 | /* kernel loglevels not implemented */ |
91744e14 | 904 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
28ab034a JG |
905 | } else if (opt_userspace) { /* User-space tracer action */ |
906 | DBG("Enabling UST event %s for channel %s, loglevel %s", | |
907 | event_name, | |
908 | print_channel_name(channel_name), | |
909 | opt_loglevel ?: "<all>"); | |
2bdd86d4 MD |
910 | |
911 | switch (opt_event_type) { | |
28ab034a | 912 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
2bdd86d4 MD |
913 | /* Fall-through */ |
914 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 915 | /* Copy name and type of the event */ |
91744e14 FD |
916 | ev->type = LTTNG_EVENT_TRACEPOINT; |
917 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
918 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
919 | break; |
920 | case LTTNG_EVENT_PROBE: | |
921 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 922 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 923 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 924 | default: |
cc62c0c0 | 925 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 926 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
927 | goto error; |
928 | } | |
0cda4f28 | 929 | |
7ed70bc9 | 930 | if (opt_exclude) { |
91744e14 | 931 | ev->exclusion = 1; |
28ab034a JG |
932 | if (opt_event_type != LTTNG_EVENT_ALL && |
933 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
d5dd17fd JI |
934 | ERR("Exclusion option can only be used with tracepoint events"); |
935 | ret = CMD_ERROR; | |
936 | goto error; | |
937 | } | |
e358ddd5 JG |
938 | /* Free previously allocated items. */ |
939 | lttng_dynamic_pointer_array_reset(&exclusions); | |
9f449915 | 940 | ret = create_exclusion_list_and_validate( |
28ab034a | 941 | event_name, opt_exclude, &exclusions); |
9f449915 PP |
942 | if (ret) { |
943 | ret = CMD_ERROR; | |
7ed70bc9 JI |
944 | goto error; |
945 | } | |
502bbe89 | 946 | |
28ab034a | 947 | warn_on_truncated_exclusion_names(&exclusions, &warn); |
7ed70bc9 JI |
948 | } |
949 | ||
48a40005 | 950 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
ed7f4083 | 951 | if (opt_loglevel) { |
7e8f2e9c | 952 | enum lttng_loglevel loglevel; |
28ab034a JG |
953 | const int name_search_ret = |
954 | loglevel_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c JG |
955 | |
956 | if (name_search_ret == -1) { | |
8005f29a | 957 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 958 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
959 | goto error; |
960 | } | |
7e8f2e9c JG |
961 | |
962 | ev->loglevel = (int) loglevel; | |
22e25b71 | 963 | } else { |
91744e14 | 964 | ev->loglevel = -1; |
ed7f4083 | 965 | } |
0e115563 | 966 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 | 967 | if (opt_event_type != LTTNG_EVENT_ALL && |
28ab034a | 968 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
5cdb6027 | 969 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
970 | ret = CMD_UNSUPPORTED; |
971 | goto error; | |
972 | } | |
b2064f54 | 973 | |
48a40005 | 974 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
b2064f54 | 975 | if (opt_loglevel) { |
7e8f2e9c JG |
976 | int name_search_ret; |
977 | ||
5cdb6027 | 978 | if (opt_jul) { |
7e8f2e9c JG |
979 | enum lttng_loglevel_jul loglevel; |
980 | ||
28ab034a JG |
981 | name_search_ret = |
982 | loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
7e8f2e9c | 983 | ev->loglevel = (int) loglevel; |
5cdb6027 | 984 | } else if (opt_log4j) { |
7e8f2e9c JG |
985 | enum lttng_loglevel_log4j loglevel; |
986 | ||
28ab034a JG |
987 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, |
988 | &loglevel); | |
7e8f2e9c | 989 | ev->loglevel = (int) loglevel; |
7fefa907 JG |
990 | } else { |
991 | /* python domain. */ | |
7e8f2e9c JG |
992 | enum lttng_loglevel_python loglevel; |
993 | ||
28ab034a JG |
994 | name_search_ret = loglevel_python_name_to_value( |
995 | opt_loglevel, &loglevel); | |
7e8f2e9c | 996 | ev->loglevel = (int) loglevel; |
5cdb6027 | 997 | } |
7e8f2e9c JG |
998 | |
999 | if (name_search_ret) { | |
b2064f54 DG |
1000 | ERR("Unknown loglevel %s", opt_loglevel); |
1001 | ret = -LTTNG_ERR_INVALID; | |
1002 | goto error; | |
1003 | } | |
1004 | } else { | |
5cdb6027 | 1005 | if (opt_jul) { |
91744e14 | 1006 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 1007 | } else if (opt_log4j) { |
91744e14 | 1008 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1009 | } else if (opt_python) { |
91744e14 | 1010 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 1011 | } |
b2064f54 | 1012 | } |
91744e14 FD |
1013 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1014 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1015 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1016 | } else { |
a0377dfe | 1017 | abort(); |
f3ed775e DG |
1018 | } |
1019 | ||
025faf73 | 1020 | if (!opt_filter) { |
9c48cab3 JI |
1021 | char *exclusion_string; |
1022 | ||
28ab034a JG |
1023 | command_ret = lttng_enable_event_with_exclusions( |
1024 | handle, | |
1025 | ev, | |
1026 | channel_name, | |
1027 | NULL, | |
1028 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
1029 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 1030 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
1031 | if (!exclusion_string) { |
1032 | PERROR("Cannot allocate exclusion_string"); | |
1033 | error = 1; | |
1034 | goto end; | |
1035 | } | |
89476427 | 1036 | if (command_ret < 0) { |
025faf73 | 1037 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1038 | switch (-command_ret) { |
025faf73 | 1039 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1040 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
28ab034a JG |
1041 | event_name, |
1042 | exclusion_string, | |
1043 | print_channel_name(channel_name), | |
1044 | session_name); | |
89476427 | 1045 | warn = 1; |
025faf73 | 1046 | break; |
45d5d421 CB |
1047 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1048 | { | |
28ab034a JG |
1049 | const char *msg = |
1050 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1051 | ERR("Event %s%s: %s (channel %s, session %s)", | |
1052 | event_name, | |
1053 | exclusion_string, | |
1054 | msg, | |
1055 | print_channel_name(channel_name), | |
1056 | session_name); | |
45d5d421 CB |
1057 | error = 1; |
1058 | break; | |
1059 | } | |
dcabc190 FD |
1060 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1061 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
28ab034a JG |
1062 | event_name, |
1063 | print_channel_name(channel_name), | |
1064 | session_name); | |
dcabc190 FD |
1065 | error = 1; |
1066 | break; | |
025faf73 | 1067 | default: |
28ab034a JG |
1068 | ERR("Event %s%s: %s (channel %s, session %s)", |
1069 | event_name, | |
1070 | exclusion_string, | |
1071 | lttng_strerror(command_ret), | |
1072 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1073 | print_raw_channel_name(channel_name) : | |
1074 | print_channel_name(channel_name), | |
1075 | session_name); | |
89476427 | 1076 | error = 1; |
025faf73 DG |
1077 | break; |
1078 | } | |
89476427 | 1079 | error_holder = command_ret; |
025faf73 | 1080 | } else { |
8274eeba AB |
1081 | switch (dom.type) { |
1082 | case LTTNG_DOMAIN_KERNEL: | |
1083 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1084 | MSG("%s event %s%s created in channel %s", |
28ab034a JG |
1085 | lttng_domain_type_str(dom.type), |
1086 | event_name, | |
1087 | exclusion_string, | |
1088 | print_channel_name(channel_name)); | |
8274eeba AB |
1089 | break; |
1090 | case LTTNG_DOMAIN_JUL: | |
1091 | case LTTNG_DOMAIN_LOG4J: | |
1092 | case LTTNG_DOMAIN_PYTHON: | |
1093 | /* | |
1094 | * Don't print the default channel | |
1095 | * name for agent domains. | |
1096 | */ | |
895707da | 1097 | MSG("%s event %s%s enabled", |
28ab034a JG |
1098 | lttng_domain_type_str(dom.type), |
1099 | event_name, | |
1100 | exclusion_string); | |
8274eeba AB |
1101 | break; |
1102 | default: | |
a0377dfe | 1103 | abort(); |
49ceaa70 | 1104 | } |
42224349 | 1105 | } |
9c48cab3 | 1106 | free(exclusion_string); |
6181537c | 1107 | } |
025faf73 DG |
1108 | |
1109 | if (opt_filter) { | |
9c48cab3 JI |
1110 | char *exclusion_string; |
1111 | ||
89476427 | 1112 | /* Filter present */ |
91744e14 | 1113 | ev->filter = 1; |
89476427 | 1114 | |
28ab034a JG |
1115 | command_ret = lttng_enable_event_with_exclusions( |
1116 | handle, | |
1117 | ev, | |
1118 | channel_name, | |
1119 | opt_filter, | |
1120 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
1121 | (char **) exclusions.array.buffer.data); | |
e358ddd5 | 1122 | exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
1123 | if (!exclusion_string) { |
1124 | PERROR("Cannot allocate exclusion_string"); | |
1125 | error = 1; | |
1126 | goto end; | |
1127 | } | |
89476427 JRJ |
1128 | if (command_ret < 0) { |
1129 | switch (-command_ret) { | |
7671f53c | 1130 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1131 | WARN("Filter on event %s%s is already enabled" |
28ab034a JG |
1132 | " (channel %s, session %s)", |
1133 | event_name, | |
1134 | exclusion_string, | |
1135 | print_channel_name(channel_name), | |
1136 | session_name); | |
89476427 | 1137 | warn = 1; |
7671f53c | 1138 | break; |
45d5d421 CB |
1139 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1140 | { | |
28ab034a JG |
1141 | const char *msg = |
1142 | "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1143 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", | |
1144 | ev->name, | |
1145 | exclusion_string, | |
1146 | msg, | |
1147 | print_channel_name(channel_name), | |
1148 | session_name, | |
1149 | opt_filter); | |
45d5d421 CB |
1150 | error = 1; |
1151 | break; | |
1152 | } | |
7671f53c | 1153 | default: |
28ab034a JG |
1154 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", |
1155 | ev->name, | |
1156 | exclusion_string, | |
1157 | lttng_strerror(command_ret), | |
1158 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME ? | |
1159 | print_raw_channel_name(channel_name) : | |
1160 | print_channel_name(channel_name), | |
1161 | session_name, | |
1162 | opt_filter); | |
89476427 | 1163 | error = 1; |
7671f53c CB |
1164 | break; |
1165 | } | |
89476427 JRJ |
1166 | error_holder = command_ret; |
1167 | ||
16363652 | 1168 | } else { |
9c48cab3 | 1169 | MSG("Event %s%s: Filter '%s' successfully set", |
28ab034a JG |
1170 | event_name, |
1171 | exclusion_string, | |
1172 | opt_filter); | |
53a80697 | 1173 | } |
9c48cab3 | 1174 | free(exclusion_string); |
53a80697 | 1175 | } |
6181537c | 1176 | |
89476427 JRJ |
1177 | if (lttng_opt_mi) { |
1178 | if (command_ret) { | |
1179 | success = 0; | |
91744e14 | 1180 | ev->enabled = 0; |
89476427 | 1181 | } else { |
91744e14 | 1182 | ev->enabled = 1; |
89476427 JRJ |
1183 | } |
1184 | ||
91744e14 | 1185 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1186 | if (ret) { |
1187 | ret = CMD_ERROR; | |
1188 | goto error; | |
1189 | } | |
1190 | ||
1191 | /* print exclusion */ | |
e358ddd5 | 1192 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
1193 | if (ret) { |
1194 | ret = CMD_ERROR; | |
1195 | goto error; | |
1196 | } | |
1197 | ||
1198 | /* Success ? */ | |
28ab034a JG |
1199 | ret = mi_lttng_writer_write_element_bool( |
1200 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
1201 | if (ret) { |
1202 | ret = CMD_ERROR; | |
1203 | goto end; | |
1204 | } | |
1205 | ||
1206 | /* Close event element */ | |
1207 | ret = mi_lttng_writer_close_element(writer); | |
1208 | if (ret) { | |
1209 | ret = CMD_ERROR; | |
1210 | goto end; | |
1211 | } | |
1212 | } | |
1213 | ||
f3ed775e DG |
1214 | /* Next event */ |
1215 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1216 | /* Reset warn, error and success */ |
1217 | success = 1; | |
f3ed775e DG |
1218 | } |
1219 | ||
8c9ae521 | 1220 | end: |
89476427 JRJ |
1221 | /* Close Mi */ |
1222 | if (lttng_opt_mi) { | |
1223 | /* Close events element */ | |
1224 | ret = mi_lttng_writer_close_element(writer); | |
1225 | if (ret) { | |
1226 | ret = CMD_ERROR; | |
1227 | goto error; | |
1228 | } | |
1229 | } | |
f3ed775e | 1230 | error: |
ae856491 DG |
1231 | if (warn) { |
1232 | ret = CMD_WARNING; | |
1233 | } | |
89476427 JRJ |
1234 | if (error) { |
1235 | ret = CMD_ERROR; | |
1236 | } | |
cd80958d | 1237 | lttng_destroy_handle(handle); |
e358ddd5 | 1238 | lttng_dynamic_pointer_array_reset(&exclusions); |
0c4e727b | 1239 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1240 | |
89476427 JRJ |
1241 | /* Overwrite ret with error_holder if there was an actual error with |
1242 | * enabling an event. | |
1243 | */ | |
1244 | ret = error_holder ? error_holder : ret; | |
1245 | ||
91744e14 | 1246 | lttng_event_destroy(ev); |
f3ed775e DG |
1247 | return ret; |
1248 | } | |
1249 | ||
1250 | /* | |
6181537c | 1251 | * Add event to trace session |
f3ed775e DG |
1252 | */ |
1253 | int cmd_enable_events(int argc, const char **argv) | |
1254 | { | |
89476427 | 1255 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1256 | static poptContext pc; |
cd80958d | 1257 | char *session_name = NULL; |
5b915816 MJ |
1258 | char *event_list = NULL; |
1259 | const char *arg_event_list = NULL; | |
68c7f6e5 | 1260 | const char *leftover = NULL; |
de044b7a | 1261 | int event_type = -1; |
f3ed775e DG |
1262 | |
1263 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1264 | poptReadDefaultConfig(pc, 0); | |
1265 | ||
1266 | /* Default event type */ | |
7a3d1328 | 1267 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1268 | |
1269 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1270 | switch (opt) { | |
1271 | case OPT_HELP: | |
4ba92f18 | 1272 | SHOW_HELP(); |
f3ed775e | 1273 | goto end; |
f3ed775e | 1274 | case OPT_TRACEPOINT: |
e6ddca71 | 1275 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1276 | break; |
cf0e5467 | 1277 | case OPT_PROBE: |
7d29a247 | 1278 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1279 | break; |
dcabc190 FD |
1280 | case OPT_USERSPACE_PROBE: |
1281 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1282 | break; | |
f3ed775e DG |
1283 | case OPT_FUNCTION: |
1284 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1285 | break; |
a54bd42d MD |
1286 | case OPT_SYSCALL: |
1287 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1288 | break; |
eeac7d46 MD |
1289 | case OPT_USERSPACE: |
1290 | opt_userspace = 1; | |
eeac7d46 | 1291 | break; |
0cda4f28 | 1292 | case OPT_LOGLEVEL: |
8005f29a | 1293 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1294 | opt_loglevel = poptGetOptArg(pc); |
1295 | break; | |
1296 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1297 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1298 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1299 | break; |
679b4943 SM |
1300 | case OPT_LIST_OPTIONS: |
1301 | list_cmd_options(stdout, long_options); | |
679b4943 | 1302 | goto end; |
53a80697 MD |
1303 | case OPT_FILTER: |
1304 | break; | |
fac3366c JI |
1305 | case OPT_EXCLUDE: |
1306 | break; | |
f3ed775e | 1307 | default: |
f3ed775e DG |
1308 | ret = CMD_UNDEFINED; |
1309 | goto end; | |
1310 | } | |
de044b7a DG |
1311 | |
1312 | /* Validate event type. Multiple event type are not supported. */ | |
1313 | if (event_type == -1) { | |
1314 | event_type = opt_event_type; | |
1315 | } else { | |
1316 | if (event_type != opt_event_type) { | |
1317 | ERR("Multiple event type not supported."); | |
1318 | ret = CMD_ERROR; | |
1319 | goto end; | |
1320 | } | |
1321 | } | |
f3ed775e DG |
1322 | } |
1323 | ||
3ecec76a | 1324 | ret = print_missing_or_multiple_domains( |
28ab034a | 1325 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python, true); |
3ecec76a PP |
1326 | if (ret) { |
1327 | ret = CMD_ERROR; | |
1328 | goto end; | |
1329 | } | |
1330 | ||
89476427 JRJ |
1331 | /* Mi check */ |
1332 | if (lttng_opt_mi) { | |
1333 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1334 | if (!writer) { | |
1335 | ret = -LTTNG_ERR_NOMEM; | |
1336 | goto end; | |
1337 | } | |
1338 | ||
1339 | /* Open command element */ | |
28ab034a | 1340 | ret = mi_lttng_writer_command_open(writer, mi_lttng_element_command_enable_event); |
89476427 JRJ |
1341 | if (ret) { |
1342 | ret = CMD_ERROR; | |
1343 | goto end; | |
1344 | } | |
1345 | ||
1346 | /* Open output element */ | |
28ab034a | 1347 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_command_output); |
89476427 JRJ |
1348 | if (ret) { |
1349 | ret = CMD_ERROR; | |
1350 | goto end; | |
1351 | } | |
1352 | } | |
1353 | ||
5b915816 MJ |
1354 | arg_event_list = poptGetArg(pc); |
1355 | if (arg_event_list == NULL && opt_enable_all == 0) { | |
1356 | ERR("Missing event name(s)."); | |
ca1c3607 | 1357 | ret = CMD_ERROR; |
f3ed775e DG |
1358 | goto end; |
1359 | } | |
1360 | ||
5b915816 MJ |
1361 | if (opt_enable_all == 0) { |
1362 | event_list = strdup(arg_event_list); | |
1363 | if (event_list == NULL) { | |
1364 | PERROR("Failed to copy event name(s)"); | |
1365 | ret = CMD_ERROR; | |
1366 | goto end; | |
1367 | } | |
1368 | } | |
1369 | ||
68c7f6e5 JD |
1370 | leftover = poptGetArg(pc); |
1371 | if (leftover) { | |
1372 | ERR("Unknown argument: %s", leftover); | |
1373 | ret = CMD_ERROR; | |
1374 | goto end; | |
1375 | } | |
1376 | ||
cd80958d DG |
1377 | if (!opt_session_name) { |
1378 | session_name = get_session_name(); | |
1379 | if (session_name == NULL) { | |
89476427 JRJ |
1380 | command_ret = CMD_ERROR; |
1381 | success = 0; | |
1382 | goto mi_closing; | |
cd80958d DG |
1383 | } |
1384 | } else { | |
1385 | session_name = opt_session_name; | |
1386 | } | |
1387 | ||
5b915816 | 1388 | command_ret = enable_events(session_name, event_list); |
89476427 JRJ |
1389 | if (command_ret) { |
1390 | success = 0; | |
1391 | goto mi_closing; | |
1392 | } | |
1393 | ||
1394 | mi_closing: | |
1395 | /* Mi closing */ | |
1396 | if (lttng_opt_mi) { | |
1397 | /* Close output element */ | |
1398 | ret = mi_lttng_writer_close_element(writer); | |
1399 | if (ret) { | |
1400 | ret = CMD_ERROR; | |
1401 | goto end; | |
1402 | } | |
1403 | ||
28ab034a JG |
1404 | ret = mi_lttng_writer_write_element_bool( |
1405 | writer, mi_lttng_element_command_success, success); | |
89476427 JRJ |
1406 | if (ret) { |
1407 | ret = CMD_ERROR; | |
1408 | goto end; | |
1409 | } | |
1410 | ||
1411 | /* Command element close */ | |
1412 | ret = mi_lttng_writer_command_close(writer); | |
1413 | if (ret) { | |
1414 | ret = CMD_ERROR; | |
1415 | goto end; | |
1416 | } | |
1417 | } | |
f3ed775e DG |
1418 | |
1419 | end: | |
89476427 JRJ |
1420 | /* Mi clean-up */ |
1421 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1422 | /* Preserve original error code */ | |
1423 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1424 | } | |
1425 | ||
cd80958d DG |
1426 | if (opt_session_name == NULL) { |
1427 | free(session_name); | |
1428 | } | |
1429 | ||
5b915816 MJ |
1430 | free(event_list); |
1431 | ||
89476427 JRJ |
1432 | /* Overwrite ret if an error occurred in enable_events */ |
1433 | ret = command_ret ? command_ret : ret; | |
1434 | ||
ca1c3607 | 1435 | poptFreeContext(pc); |
f3ed775e DG |
1436 | return ret; |
1437 | } |