Commit | Line | Data |
---|---|---|
f3ed775e | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> |
f3ed775e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f3ed775e | 5 | * |
f3ed775e DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
b2064f54 | 9 | #include <assert.h> |
f3ed775e DG |
10 | #include <popt.h> |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
f3ed775e DG |
13 | #include <sys/stat.h> |
14 | #include <sys/types.h> | |
15 | #include <unistd.h> | |
5a0de755 | 16 | #include <inttypes.h> |
8f0d098b | 17 | #include <ctype.h> |
f3ed775e | 18 | |
343af227 | 19 | #include <common/sessiond-comm/sessiond-comm.h> |
f5436bfc | 20 | #include <common/compat/string.h> |
dbc478f3 | 21 | #include <common/compat/getenv.h> |
9f449915 | 22 | #include <common/string-utils/string-utils.h> |
dbc478f3 | 23 | #include <common/utils.h> |
f3ed775e | 24 | |
dbc478f3 | 25 | #include <lttng/constant.h> |
89476427 JRJ |
26 | /* Mi dependancy */ |
27 | #include <common/mi-lttng.h> | |
28 | ||
7e8f2e9c JG |
29 | #include <lttng/event-internal.h> |
30 | ||
89476427 | 31 | #include "../command.h" |
7e8f2e9c | 32 | #include "../loglevel.h" |
0c4e727b | 33 | #include "../uprobe.h" |
89476427 | 34 | |
8ab7c0d9 MD |
35 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
36 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
37 | #endif | |
38 | ||
f3ed775e DG |
39 | static char *opt_event_list; |
40 | static int opt_event_type; | |
0cda4f28 MD |
41 | static const char *opt_loglevel; |
42 | static int opt_loglevel_type; | |
6181537c | 43 | static int opt_kernel; |
5440dc42 | 44 | static char *opt_session_name; |
f3ed775e | 45 | static int opt_userspace; |
b9dfb167 | 46 | static int opt_jul; |
5cdb6027 | 47 | static int opt_log4j; |
0e115563 | 48 | static int opt_python; |
f3ed775e | 49 | static int opt_enable_all; |
cf0e5467 | 50 | static char *opt_probe; |
dcabc190 | 51 | static char *opt_userspace_probe; |
8f0d098b | 52 | static char *opt_function; |
f3ed775e | 53 | static char *opt_channel_name; |
53a80697 | 54 | static char *opt_filter; |
fac3366c | 55 | static char *opt_exclude; |
f3ed775e | 56 | |
4fc83d94 PP |
57 | #ifdef LTTNG_EMBED_HELP |
58 | static const char help_msg[] = | |
59 | #include <lttng-enable-event.1.h> | |
60 | ; | |
61 | #endif | |
62 | ||
f3ed775e DG |
63 | enum { |
64 | OPT_HELP = 1, | |
f3ed775e | 65 | OPT_TRACEPOINT, |
cf0e5467 | 66 | OPT_PROBE, |
dcabc190 | 67 | OPT_USERSPACE_PROBE, |
f3ed775e | 68 | OPT_FUNCTION, |
a54bd42d | 69 | OPT_SYSCALL, |
eeac7d46 | 70 | OPT_USERSPACE, |
0cda4f28 MD |
71 | OPT_LOGLEVEL, |
72 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 73 | OPT_LIST_OPTIONS, |
53a80697 | 74 | OPT_FILTER, |
fac3366c | 75 | OPT_EXCLUDE, |
f3ed775e DG |
76 | }; |
77 | ||
cd80958d | 78 | static struct lttng_handle *handle; |
89476427 | 79 | static struct mi_writer *writer; |
cd80958d | 80 | |
f3ed775e DG |
81 | static struct poptOption long_options[] = { |
82 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
83 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 84 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 85 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
86 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
87 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 88 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 89 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 90 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 91 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
f3ed775e | 92 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 93 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
dcabc190 | 94 | {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0}, |
40e9d5d3 | 95 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
7ebae521 | 96 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
97 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
98 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 99 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 100 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 101 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
102 | {0, 0, 0, 0, 0, 0, 0} |
103 | }; | |
104 | ||
0d63dd19 | 105 | /* |
6181537c | 106 | * Parse probe options. |
0d63dd19 | 107 | */ |
cf0e5467 | 108 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 109 | { |
49d4e302 JRJ |
110 | int ret = CMD_SUCCESS; |
111 | int match; | |
8ff0bbd0 | 112 | char s_hex[19]; |
8ab7c0d9 | 113 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
114 | char name[LTTNG_SYMBOL_NAME_LEN]; |
115 | ||
116 | if (opt == NULL) { | |
49d4e302 | 117 | ret = CMD_ERROR; |
8f0d098b | 118 | goto end; |
0d63dd19 DG |
119 | } |
120 | ||
121 | /* Check for symbol+offset */ | |
49d4e302 | 122 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 123 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 124 | if (match == 2) { |
7d29a247 | 125 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 126 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 127 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 128 | if (*s_hex == '\0') { |
8ff0bbd0 | 129 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 130 | ret = CMD_ERROR; |
8f0d098b | 131 | goto end; |
0d63dd19 | 132 | } |
8ff0bbd0 | 133 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 134 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 135 | ev->attr.probe.addr = 0; |
8f0d098b MD |
136 | goto end; |
137 | } | |
138 | ||
139 | /* Check for symbol */ | |
88c91427 | 140 | if (isalpha(name[0]) || name[0] == '_') { |
49d4e302 | 141 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 142 | name); |
49d4e302 | 143 | if (match == 1) { |
8f0d098b | 144 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 145 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
146 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
147 | ev->attr.probe.offset = 0; | |
148 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
149 | ev->attr.probe.addr = 0; | |
150 | goto end; | |
151 | } | |
0d63dd19 DG |
152 | } |
153 | ||
154 | /* Check for address */ | |
49d4e302 JRJ |
155 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
156 | if (match > 0) { | |
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 | } |
8ff0bbd0 | 167 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 168 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
169 | ev->attr.probe.offset = 0; |
170 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 171 | goto end; |
0d63dd19 DG |
172 | } |
173 | ||
174 | /* No match */ | |
49d4e302 | 175 | ret = CMD_ERROR; |
0d63dd19 | 176 | |
8f0d098b | 177 | end: |
0d63dd19 DG |
178 | return ret; |
179 | } | |
180 | ||
85076754 MD |
181 | static |
182 | const char *print_channel_name(const char *name) | |
183 | { | |
184 | return name ? : DEFAULT_CHANNEL_NAME; | |
185 | } | |
186 | ||
187 | static | |
188 | const char *print_raw_channel_name(const char *name) | |
189 | { | |
190 | return name ? : "<default>"; | |
191 | } | |
192 | ||
89476427 JRJ |
193 | /* |
194 | * Mi print exlcusion list | |
195 | */ | |
196 | static | |
9f449915 | 197 | int mi_print_exclusion(char **names) |
89476427 JRJ |
198 | { |
199 | int i, ret; | |
9f449915 | 200 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
201 | |
202 | assert(writer); | |
203 | ||
204 | if (count == 0) { | |
205 | ret = 0; | |
206 | goto end; | |
207 | } | |
208 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
209 | if (ret) { | |
210 | goto end; | |
211 | } | |
212 | ||
213 | for (i = 0; i < count; i++) { | |
214 | ret = mi_lttng_writer_write_element_string(writer, | |
215 | config_element_exclusion, names[i]); | |
216 | if (ret) { | |
217 | goto end; | |
218 | } | |
219 | } | |
220 | ||
221 | /* Close exclusions element */ | |
222 | ret = mi_lttng_writer_close_element(writer); | |
223 | ||
224 | end: | |
225 | return ret; | |
226 | } | |
227 | ||
9c48cab3 JI |
228 | /* |
229 | * Return allocated string for pretty-printing exclusion names. | |
230 | */ | |
231 | static | |
9f449915 | 232 | char *print_exclusions(char **names) |
9c48cab3 JI |
233 | { |
234 | int length = 0; | |
235 | int i; | |
bfe36393 | 236 | const char preamble[] = " excluding "; |
9c48cab3 | 237 | char *ret; |
9f449915 | 238 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
239 | |
240 | if (count == 0) { | |
241 | return strdup(""); | |
242 | } | |
243 | ||
244 | /* calculate total required length */ | |
245 | for (i = 0; i < count; i++) { | |
9f449915 | 246 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
247 | } |
248 | ||
bfe36393 JG |
249 | length += sizeof(preamble); |
250 | ret = zmalloc(length); | |
fd591b18 MD |
251 | if (!ret) { |
252 | return NULL; | |
253 | } | |
9c48cab3 JI |
254 | strncpy(ret, preamble, length); |
255 | for (i = 0; i < count; i++) { | |
9f449915 | 256 | strcat(ret, "\""); |
9c48cab3 | 257 | strcat(ret, names[i]); |
9f449915 | 258 | strcat(ret, "\""); |
9c48cab3 | 259 | if (i != count - 1) { |
9f449915 | 260 | strcat(ret, ", "); |
9c48cab3 JI |
261 | } |
262 | } | |
89476427 | 263 | |
9c48cab3 JI |
264 | return ret; |
265 | } | |
266 | ||
748bde76 | 267 | static |
9f449915 | 268 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 269 | { |
9f449915 PP |
270 | bool warn = false; |
271 | int ret = 0; | |
272 | const char *e = event_name; | |
273 | const char *x = exclusion; | |
274 | ||
275 | /* Scan both the excluder and the event letter by letter */ | |
276 | while (true) { | |
277 | if (*e == '\\') { | |
278 | if (*x != *e) { | |
279 | warn = true; | |
280 | goto end; | |
281 | } | |
748bde76 | 282 | |
9f449915 PP |
283 | e++; |
284 | x++; | |
285 | goto cmp_chars; | |
286 | } | |
287 | ||
288 | if (*x == '*') { | |
289 | /* Event is a subset of the excluder */ | |
290 | ERR("Event %s: %s excludes all events from %s", | |
291 | event_name, exclusion, event_name); | |
292 | goto error; | |
293 | } | |
294 | ||
295 | if (*e == '*') { | |
296 | /* | |
297 | * Reached the end of the event name before the | |
298 | * end of the exclusion: this is valid. | |
299 | */ | |
300 | goto end; | |
301 | } | |
302 | ||
303 | cmp_chars: | |
304 | if (*x != *e) { | |
305 | warn = true; | |
306 | break; | |
307 | } | |
308 | ||
309 | x++; | |
310 | e++; | |
748bde76 JI |
311 | } |
312 | ||
9f449915 | 313 | goto end; |
748bde76 | 314 | |
9f449915 PP |
315 | error: |
316 | ret = -1; | |
748bde76 | 317 | |
9f449915 PP |
318 | end: |
319 | if (warn) { | |
320 | WARN("Event %s: %s does not exclude any events from %s", | |
321 | event_name, exclusion, event_name); | |
322 | } | |
748bde76 | 323 | |
9f449915 PP |
324 | return ret; |
325 | } | |
326 | ||
9f449915 PP |
327 | static |
328 | int create_exclusion_list_and_validate(const char *event_name, | |
329 | const char *exclusions_arg, | |
330 | char ***exclusion_list) | |
331 | { | |
332 | int ret = 0; | |
333 | char **exclusions = NULL; | |
334 | ||
335 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
336 | if (!strutils_is_star_glob_pattern(event_name)) { | |
337 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
338 | event_name); | |
339 | goto error; | |
340 | } | |
341 | ||
342 | /* Split exclusions. */ | |
343 | exclusions = strutils_split(exclusions_arg, ',', true); | |
344 | if (!exclusions) { | |
345 | goto error; | |
346 | } | |
347 | ||
348 | /* | |
349 | * If the event name is a star-at-end only globbing pattern, | |
350 | * then we can validate the individual exclusions. Otherwise | |
351 | * all exclusions are passed to the session daemon. | |
352 | */ | |
353 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
354 | char * const *exclusion; | |
355 | ||
356 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
357 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
358 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 359 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 360 | if (ret) { |
5ef79758 MD |
361 | goto error; |
362 | } | |
748bde76 | 363 | } |
748bde76 JI |
364 | } |
365 | } | |
9f449915 PP |
366 | |
367 | *exclusion_list = exclusions; | |
368 | ||
748bde76 | 369 | goto end; |
9f449915 | 370 | |
748bde76 | 371 | error: |
9f449915 PP |
372 | ret = -1; |
373 | strutils_free_null_terminated_array_of_strings(exclusions); | |
374 | ||
748bde76 | 375 | end: |
748bde76 JI |
376 | return ret; |
377 | } | |
502bbe89 | 378 | |
9f449915 PP |
379 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
380 | int *warn) | |
502bbe89 | 381 | { |
9f449915 | 382 | char * const *exclusion; |
502bbe89 | 383 | |
9f449915 PP |
384 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
385 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 386 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 387 | *exclusion); |
502bbe89 PP |
388 | *warn = 1; |
389 | } | |
390 | } | |
391 | } | |
392 | ||
f3ed775e | 393 | /* |
6181537c | 394 | * Enabling event using the lttng API. |
89476427 | 395 | * Note: in case of error only the last error code will be return. |
f3ed775e | 396 | */ |
cd80958d | 397 | static int enable_events(char *session_name) |
f3ed775e | 398 | { |
89476427 JRJ |
399 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
400 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 401 | char *event_name, *channel_name = NULL; |
91744e14 | 402 | struct lttng_event *ev; |
7d29a247 | 403 | struct lttng_domain dom; |
7ed70bc9 | 404 | char **exclusion_list = NULL; |
0c4e727b | 405 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 406 | |
441c16a7 MD |
407 | memset(&dom, 0, sizeof(dom)); |
408 | ||
91744e14 FD |
409 | ev = lttng_event_create(); |
410 | if (!ev) { | |
411 | ret = CMD_ERROR; | |
412 | goto error; | |
413 | } | |
414 | ||
53a80697 | 415 | if (opt_kernel) { |
67b58630 JG |
416 | if (opt_loglevel) { |
417 | WARN("Kernel loglevels are not supported."); | |
418 | } | |
53a80697 MD |
419 | } |
420 | ||
7d29a247 DG |
421 | /* Create lttng domain */ |
422 | if (opt_kernel) { | |
423 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 424 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 425 | } else if (opt_userspace) { |
2bdd86d4 | 426 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 427 | /* Default. */ |
8692d4e5 | 428 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
429 | } else if (opt_jul) { |
430 | dom.type = LTTNG_DOMAIN_JUL; | |
431 | /* Default. */ | |
432 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
433 | } else if (opt_log4j) { |
434 | dom.type = LTTNG_DOMAIN_LOG4J; | |
435 | /* Default. */ | |
436 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
437 | } else if (opt_python) { |
438 | dom.type = LTTNG_DOMAIN_PYTHON; | |
439 | /* Default. */ | |
440 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 441 | } else { |
3ecec76a PP |
442 | /* Checked by the caller. */ |
443 | assert(0); | |
2bdd86d4 | 444 | } |
7d29a247 | 445 | |
8b08c525 AB |
446 | if (opt_exclude) { |
447 | switch (dom.type) { | |
448 | case LTTNG_DOMAIN_KERNEL: | |
449 | case LTTNG_DOMAIN_JUL: | |
450 | case LTTNG_DOMAIN_LOG4J: | |
451 | case LTTNG_DOMAIN_PYTHON: | |
452 | ERR("Event name exclusions are not yet implemented for %s events", | |
453 | get_domain_str(dom.type)); | |
454 | ret = CMD_ERROR; | |
455 | goto error; | |
456 | case LTTNG_DOMAIN_UST: | |
457 | /* Exclusions supported */ | |
458 | break; | |
459 | default: | |
460 | assert(0); | |
461 | } | |
d5dd17fd JI |
462 | } |
463 | ||
4fd2697f FD |
464 | /* |
465 | * Adding a filter to a probe, function or userspace-probe would be | |
466 | * denied by the kernel tracer as it's not supported at the moment. We | |
467 | * do an early check here to warn the user. | |
468 | */ | |
469 | if (opt_filter && opt_kernel) { | |
470 | switch (opt_event_type) { | |
471 | case LTTNG_EVENT_ALL: | |
472 | case LTTNG_EVENT_TRACEPOINT: | |
473 | case LTTNG_EVENT_SYSCALL: | |
474 | break; | |
475 | case LTTNG_EVENT_PROBE: | |
476 | case LTTNG_EVENT_USERSPACE_PROBE: | |
477 | case LTTNG_EVENT_FUNCTION: | |
478 | ERR("Filter expressions are not supported for %s events", | |
479 | get_event_type_str(opt_event_type)); | |
480 | ret = CMD_ERROR; | |
481 | goto error; | |
482 | default: | |
483 | ret = CMD_UNDEFINED; | |
484 | goto error; | |
485 | } | |
486 | } | |
487 | ||
85076754 | 488 | channel_name = opt_channel_name; |
ae856491 | 489 | |
cd80958d DG |
490 | handle = lttng_create_handle(session_name, &dom); |
491 | if (handle == NULL) { | |
492 | ret = -1; | |
493 | goto error; | |
494 | } | |
1aef21b6 | 495 | |
89476427 JRJ |
496 | /* Prepare Mi */ |
497 | if (lttng_opt_mi) { | |
498 | /* Open a events element */ | |
499 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
500 | if (ret) { | |
501 | ret = CMD_ERROR; | |
502 | goto error; | |
503 | } | |
504 | } | |
505 | ||
cd80958d | 506 | if (opt_enable_all) { |
8c9ae521 | 507 | /* Default setup for enable all */ |
75e8c5ab | 508 | if (opt_kernel) { |
91744e14 FD |
509 | ev->type = opt_event_type; |
510 | strcpy(ev->name, "*"); | |
300b8fd5 | 511 | /* kernel loglevels not implemented */ |
91744e14 | 512 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 513 | } else { |
91744e14 FD |
514 | ev->type = LTTNG_EVENT_TRACEPOINT; |
515 | strcpy(ev->name, "*"); | |
516 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 517 | if (opt_loglevel) { |
7e8f2e9c JG |
518 | int name_search_ret; |
519 | ||
0e115563 | 520 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 521 | |
b2064f54 | 522 | if (opt_userspace) { |
7e8f2e9c JG |
523 | enum lttng_loglevel loglevel; |
524 | ||
525 | name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
526 | ev->loglevel = (int) loglevel; | |
b2064f54 | 527 | } else if (opt_jul) { |
7e8f2e9c JG |
528 | enum lttng_loglevel_jul loglevel; |
529 | ||
530 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
531 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 532 | } else if (opt_log4j) { |
7e8f2e9c JG |
533 | enum lttng_loglevel_log4j loglevel; |
534 | ||
535 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
536 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
537 | } else { |
538 | /* python domain. */ | |
7e8f2e9c JG |
539 | enum lttng_loglevel_python loglevel; |
540 | ||
541 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
542 | ev->loglevel = (int) loglevel; | |
b2064f54 | 543 | } |
7e8f2e9c JG |
544 | |
545 | if (name_search_ret == -1) { | |
300b8fd5 | 546 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 547 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
548 | goto error; |
549 | } | |
22e25b71 | 550 | } else { |
0e115563 | 551 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 552 | if (opt_userspace) { |
91744e14 | 553 | ev->loglevel = -1; |
34aa3685 | 554 | } else if (opt_jul) { |
91744e14 | 555 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 556 | } else if (opt_log4j) { |
91744e14 | 557 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 558 | } else if (opt_python) { |
91744e14 | 559 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 560 | } |
300b8fd5 | 561 | } |
75e8c5ab | 562 | } |
8c9ae521 | 563 | |
7ed70bc9 | 564 | if (opt_exclude) { |
9f449915 PP |
565 | ret = create_exclusion_list_and_validate("*", |
566 | opt_exclude, &exclusion_list); | |
567 | if (ret) { | |
568 | ret = CMD_ERROR; | |
7ed70bc9 JI |
569 | goto error; |
570 | } | |
502bbe89 | 571 | |
91744e14 | 572 | ev->exclusion = 1; |
502bbe89 | 573 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 574 | &warn); |
7ed70bc9 | 575 | } |
025faf73 | 576 | if (!opt_filter) { |
7ed70bc9 | 577 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 578 | ev, channel_name, |
7ed70bc9 | 579 | NULL, |
9f449915 PP |
580 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
581 | exclusion_list); | |
025faf73 DG |
582 | if (ret < 0) { |
583 | switch (-ret) { | |
584 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
585 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 586 | print_channel_name(channel_name), session_name); |
89476427 | 587 | warn = 1; |
025faf73 | 588 | break; |
45d5d421 CB |
589 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
590 | { | |
591 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
592 | ERR("Events: %s (channel %s, session %s)", | |
593 | msg, | |
594 | print_channel_name(channel_name), | |
595 | session_name); | |
596 | error = 1; | |
597 | break; | |
598 | } | |
025faf73 DG |
599 | default: |
600 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
601 | lttng_strerror(ret), |
602 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
603 | ? print_raw_channel_name(channel_name) | |
604 | : print_channel_name(channel_name), | |
605 | session_name); | |
89476427 | 606 | error = 1; |
025faf73 DG |
607 | break; |
608 | } | |
609 | goto end; | |
42224349 | 610 | } |
8c9ae521 | 611 | |
025faf73 DG |
612 | switch (opt_event_type) { |
613 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 614 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 615 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
616 | |
617 | if (!exclusion_string) { | |
618 | PERROR("Cannot allocate exclusion_string"); | |
619 | error = 1; | |
620 | goto end; | |
621 | } | |
9c48cab3 | 622 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 623 | get_domain_str(dom.type), |
9c48cab3 | 624 | exclusion_string, |
85076754 | 625 | print_channel_name(channel_name), |
025faf73 | 626 | opt_loglevel); |
9c48cab3 | 627 | free(exclusion_string); |
025faf73 | 628 | } else { |
9f449915 | 629 | char *exclusion_string = print_exclusions(exclusion_list); |
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", |
b9dfb167 | 637 | get_domain_str(dom.type), |
9c48cab3 | 638 | exclusion_string, |
85076754 | 639 | print_channel_name(channel_name)); |
9c48cab3 | 640 | free(exclusion_string); |
025faf73 DG |
641 | } |
642 | break; | |
643 | case LTTNG_EVENT_SYSCALL: | |
644 | if (opt_kernel) { | |
6e911cad MD |
645 | MSG("All %s system calls are enabled in channel %s", |
646 | get_domain_str(dom.type), | |
85076754 | 647 | print_channel_name(channel_name)); |
025faf73 DG |
648 | } |
649 | break; | |
650 | case LTTNG_EVENT_ALL: | |
67b58630 | 651 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 652 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
653 | |
654 | if (!exclusion_string) { | |
655 | PERROR("Cannot allocate exclusion_string"); | |
656 | error = 1; | |
657 | goto end; | |
658 | } | |
9c48cab3 | 659 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 660 | get_domain_str(dom.type), |
9c48cab3 | 661 | exclusion_string, |
85076754 | 662 | print_channel_name(channel_name), |
025faf73 | 663 | opt_loglevel); |
9c48cab3 | 664 | free(exclusion_string); |
025faf73 | 665 | } else { |
9f449915 | 666 | char *exclusion_string = print_exclusions(exclusion_list); |
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", |
b9dfb167 | 674 | get_domain_str(dom.type), |
9c48cab3 | 675 | exclusion_string, |
85076754 | 676 | print_channel_name(channel_name)); |
9c48cab3 | 677 | free(exclusion_string); |
025faf73 DG |
678 | } |
679 | break; | |
680 | default: | |
681 | /* | |
682 | * We should not be here since lttng_enable_event should have | |
683 | * failed on the event type. | |
684 | */ | |
685 | goto error; | |
57064ada | 686 | } |
f3ed775e | 687 | } |
89476427 | 688 | |
025faf73 | 689 | if (opt_filter) { |
91744e14 | 690 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
691 | opt_filter, |
692 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
693 | exclusion_list); | |
89476427 JRJ |
694 | if (command_ret < 0) { |
695 | switch (-command_ret) { | |
16363652 | 696 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 697 | WARN("Filter on all events is already enabled" |
16363652 | 698 | " (channel %s, session %s)", |
85076754 | 699 | print_channel_name(channel_name), session_name); |
89476427 | 700 | warn = 1; |
16363652 | 701 | break; |
45d5d421 CB |
702 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
703 | { | |
704 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
705 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
706 | msg, | |
707 | print_channel_name(channel_name), | |
708 | session_name, opt_filter); | |
709 | error = 1; | |
710 | break; | |
711 | } | |
16363652 | 712 | default: |
85076754 | 713 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
714 | lttng_strerror(command_ret), |
715 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
716 | ? print_raw_channel_name(channel_name) |
717 | : print_channel_name(channel_name), | |
718 | session_name, opt_filter); | |
89476427 | 719 | error = 1; |
16363652 DG |
720 | break; |
721 | } | |
89476427 | 722 | error_holder = command_ret; |
16363652 | 723 | } else { |
91744e14 | 724 | ev->filter = 1; |
16363652 DG |
725 | MSG("Filter '%s' successfully set", opt_filter); |
726 | } | |
727 | } | |
89476427 JRJ |
728 | |
729 | if (lttng_opt_mi) { | |
730 | /* The wildcard * is used for kernel and ust domain to | |
731 | * represent ALL. We copy * in event name to force the wildcard use | |
732 | * for kernel domain | |
733 | * | |
734 | * Note: this is strictly for semantic and printing while in | |
735 | * machine interface mode. | |
736 | */ | |
91744e14 | 737 | strcpy(ev->name, "*"); |
89476427 JRJ |
738 | |
739 | /* If we reach here the events are enabled */ | |
740 | if (!error && !warn) { | |
91744e14 | 741 | ev->enabled = 1; |
89476427 | 742 | } else { |
91744e14 | 743 | ev->enabled = 0; |
89476427 JRJ |
744 | success = 0; |
745 | } | |
91744e14 | 746 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
747 | if (ret) { |
748 | ret = CMD_ERROR; | |
749 | goto error; | |
750 | } | |
751 | ||
752 | /* print exclusion */ | |
9f449915 | 753 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
754 | if (ret) { |
755 | ret = CMD_ERROR; | |
756 | goto error; | |
757 | } | |
758 | ||
759 | /* Success ? */ | |
760 | ret = mi_lttng_writer_write_element_bool(writer, | |
761 | mi_lttng_element_command_success, success); | |
762 | if (ret) { | |
763 | ret = CMD_ERROR; | |
764 | goto error; | |
765 | } | |
766 | ||
767 | /* Close event element */ | |
768 | ret = mi_lttng_writer_close_element(writer); | |
769 | if (ret) { | |
770 | ret = CMD_ERROR; | |
771 | goto error; | |
772 | } | |
773 | } | |
774 | ||
8c9ae521 | 775 | goto end; |
f3ed775e DG |
776 | } |
777 | ||
778 | /* Strip event list */ | |
779 | event_name = strtok(opt_event_list, ","); | |
780 | while (event_name != NULL) { | |
6181537c | 781 | /* Copy name and type of the event */ |
91744e14 FD |
782 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
783 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
784 | ev->type = opt_event_type; | |
6181537c | 785 | |
f3ed775e DG |
786 | /* Kernel tracer action */ |
787 | if (opt_kernel) { | |
788 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
789 | event_name, |
790 | print_channel_name(channel_name)); | |
f3ed775e DG |
791 | |
792 | switch (opt_event_type) { | |
29c62722 MD |
793 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
794 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
795 | if (strcmp(ev->name, "*")) { |
796 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
797 | } |
798 | break; | |
e6ddca71 | 799 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 800 | break; |
7d29a247 | 801 | case LTTNG_EVENT_PROBE: |
91744e14 | 802 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 803 | if (ret) { |
cf0e5467 | 804 | ERR("Unable to parse probe options"); |
91744e14 | 805 | ret = CMD_ERROR; |
0d63dd19 DG |
806 | goto error; |
807 | } | |
f3ed775e | 808 | break; |
dcabc190 | 809 | case LTTNG_EVENT_USERSPACE_PROBE: |
0c4e727b JR |
810 | assert(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
811 | ||
812 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 813 | if (ret) { |
36aa2f64 FD |
814 | switch (ret) { |
815 | case CMD_UNSUPPORTED: | |
816 | /* | |
817 | * Error message describing | |
818 | * what is not supported was | |
819 | * printed in the function. | |
820 | */ | |
821 | break; | |
822 | case CMD_ERROR: | |
823 | default: | |
824 | ERR("Unable to parse userspace probe options"); | |
825 | break; | |
826 | } | |
dcabc190 FD |
827 | goto error; |
828 | } | |
0c4e727b JR |
829 | |
830 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
831 | if (ret) { | |
832 | WARN("Failed to set probe location on event"); | |
833 | ret = CMD_ERROR; | |
834 | goto error; | |
835 | } | |
836 | ||
837 | /* Ownership of the uprobe location was transferred to the event. */ | |
838 | uprobe_loc = NULL; | |
dcabc190 | 839 | break; |
f3ed775e | 840 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 841 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 842 | if (ret) { |
8f0d098b | 843 | ERR("Unable to parse function probe options"); |
91744e14 | 844 | ret = CMD_ERROR; |
8f0d098b MD |
845 | goto error; |
846 | } | |
847 | break; | |
a54bd42d | 848 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 849 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 850 | break; |
f3ed775e | 851 | default: |
1ab1ea0b | 852 | ret = CMD_UNDEFINED; |
f3ed775e DG |
853 | goto error; |
854 | } | |
0cda4f28 | 855 | |
0cda4f28 | 856 | /* kernel loglevels not implemented */ |
91744e14 | 857 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 858 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 859 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 860 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
861 | |
862 | switch (opt_event_type) { | |
863 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
864 | /* Fall-through */ |
865 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 866 | /* Copy name and type of the event */ |
91744e14 FD |
867 | ev->type = LTTNG_EVENT_TRACEPOINT; |
868 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
869 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
870 | break; |
871 | case LTTNG_EVENT_PROBE: | |
872 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 873 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 874 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 875 | default: |
cc62c0c0 | 876 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 877 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
878 | goto error; |
879 | } | |
0cda4f28 | 880 | |
7ed70bc9 | 881 | if (opt_exclude) { |
91744e14 | 882 | ev->exclusion = 1; |
d5dd17fd JI |
883 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
884 | ERR("Exclusion option can only be used with tracepoint events"); | |
885 | ret = CMD_ERROR; | |
886 | goto error; | |
887 | } | |
7ed70bc9 | 888 | /* Free previously allocated items */ |
9f449915 PP |
889 | strutils_free_null_terminated_array_of_strings( |
890 | exclusion_list); | |
891 | exclusion_list = NULL; | |
892 | ret = create_exclusion_list_and_validate( | |
893 | event_name, opt_exclude, | |
894 | &exclusion_list); | |
895 | if (ret) { | |
896 | ret = CMD_ERROR; | |
7ed70bc9 JI |
897 | goto error; |
898 | } | |
502bbe89 PP |
899 | |
900 | warn_on_truncated_exclusion_names( | |
9f449915 | 901 | exclusion_list, &warn); |
7ed70bc9 JI |
902 | } |
903 | ||
91744e14 | 904 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 905 | if (opt_loglevel) { |
7e8f2e9c JG |
906 | enum lttng_loglevel loglevel; |
907 | const int name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
908 | ||
909 | if (name_search_ret == -1) { | |
8005f29a | 910 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 911 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
912 | goto error; |
913 | } | |
7e8f2e9c JG |
914 | |
915 | ev->loglevel = (int) loglevel; | |
22e25b71 | 916 | } else { |
91744e14 | 917 | ev->loglevel = -1; |
ed7f4083 | 918 | } |
0e115563 | 919 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
920 | if (opt_event_type != LTTNG_EVENT_ALL && |
921 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 922 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
923 | ret = CMD_UNSUPPORTED; |
924 | goto error; | |
925 | } | |
b2064f54 | 926 | |
91744e14 | 927 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 928 | if (opt_loglevel) { |
7e8f2e9c JG |
929 | int name_search_ret; |
930 | ||
5cdb6027 | 931 | if (opt_jul) { |
7e8f2e9c JG |
932 | enum lttng_loglevel_jul loglevel; |
933 | ||
934 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
935 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 936 | } else if (opt_log4j) { |
7e8f2e9c JG |
937 | enum lttng_loglevel_log4j loglevel; |
938 | ||
939 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
940 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
941 | } else { |
942 | /* python domain. */ | |
7e8f2e9c JG |
943 | enum lttng_loglevel_python loglevel; |
944 | ||
945 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
946 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 947 | } |
7e8f2e9c JG |
948 | |
949 | if (name_search_ret) { | |
b2064f54 DG |
950 | ERR("Unknown loglevel %s", opt_loglevel); |
951 | ret = -LTTNG_ERR_INVALID; | |
952 | goto error; | |
953 | } | |
954 | } else { | |
5cdb6027 | 955 | if (opt_jul) { |
91744e14 | 956 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 957 | } else if (opt_log4j) { |
91744e14 | 958 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 959 | } else if (opt_python) { |
91744e14 | 960 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 961 | } |
b2064f54 | 962 | } |
91744e14 FD |
963 | ev->type = LTTNG_EVENT_TRACEPOINT; |
964 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
965 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 966 | } else { |
3ecec76a | 967 | assert(0); |
f3ed775e DG |
968 | } |
969 | ||
025faf73 | 970 | if (!opt_filter) { |
9c48cab3 JI |
971 | char *exclusion_string; |
972 | ||
89476427 | 973 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 974 | ev, channel_name, |
9f449915 PP |
975 | NULL, |
976 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
977 | exclusion_list); | |
978 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
979 | if (!exclusion_string) { |
980 | PERROR("Cannot allocate exclusion_string"); | |
981 | error = 1; | |
982 | goto end; | |
983 | } | |
89476427 | 984 | if (command_ret < 0) { |
025faf73 | 985 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 986 | switch (-command_ret) { |
025faf73 | 987 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 988 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 989 | event_name, |
9c48cab3 | 990 | exclusion_string, |
85076754 | 991 | print_channel_name(channel_name), session_name); |
89476427 | 992 | warn = 1; |
025faf73 | 993 | break; |
45d5d421 CB |
994 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
995 | { | |
996 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
997 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
998 | exclusion_string, | |
999 | msg, | |
1000 | print_channel_name(channel_name), | |
1001 | session_name); | |
1002 | error = 1; | |
1003 | break; | |
1004 | } | |
dcabc190 FD |
1005 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1006 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1007 | event_name, print_channel_name(channel_name), | |
1008 | session_name); | |
1009 | error = 1; | |
1010 | break; | |
025faf73 | 1011 | default: |
9c48cab3 JI |
1012 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1013 | exclusion_string, | |
da3d7d0e JRJ |
1014 | lttng_strerror(command_ret), |
1015 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1016 | ? print_raw_channel_name(channel_name) |
1017 | : print_channel_name(channel_name), | |
1018 | session_name); | |
89476427 | 1019 | error = 1; |
025faf73 DG |
1020 | break; |
1021 | } | |
89476427 | 1022 | error_holder = command_ret; |
025faf73 | 1023 | } else { |
8274eeba AB |
1024 | switch (dom.type) { |
1025 | case LTTNG_DOMAIN_KERNEL: | |
1026 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1027 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1028 | get_domain_str(dom.type), |
1029 | event_name, | |
1030 | exclusion_string, | |
1031 | print_channel_name(channel_name)); | |
1032 | break; | |
1033 | case LTTNG_DOMAIN_JUL: | |
1034 | case LTTNG_DOMAIN_LOG4J: | |
1035 | case LTTNG_DOMAIN_PYTHON: | |
1036 | /* | |
1037 | * Don't print the default channel | |
1038 | * name for agent domains. | |
1039 | */ | |
895707da | 1040 | MSG("%s event %s%s enabled", |
8274eeba AB |
1041 | get_domain_str(dom.type), |
1042 | event_name, | |
1043 | exclusion_string); | |
1044 | break; | |
1045 | default: | |
1046 | assert(0); | |
49ceaa70 | 1047 | } |
42224349 | 1048 | } |
9c48cab3 | 1049 | free(exclusion_string); |
6181537c | 1050 | } |
025faf73 DG |
1051 | |
1052 | if (opt_filter) { | |
9c48cab3 JI |
1053 | char *exclusion_string; |
1054 | ||
89476427 | 1055 | /* Filter present */ |
91744e14 | 1056 | ev->filter = 1; |
89476427 | 1057 | |
91744e14 | 1058 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1059 | opt_filter, |
1060 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1061 | exclusion_list); | |
1062 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1063 | if (!exclusion_string) { |
1064 | PERROR("Cannot allocate exclusion_string"); | |
1065 | error = 1; | |
1066 | goto end; | |
1067 | } | |
89476427 JRJ |
1068 | if (command_ret < 0) { |
1069 | switch (-command_ret) { | |
7671f53c | 1070 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1071 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1072 | " (channel %s, session %s)", |
85076754 | 1073 | event_name, |
9c48cab3 | 1074 | exclusion_string, |
85076754 | 1075 | print_channel_name(channel_name), session_name); |
89476427 | 1076 | warn = 1; |
7671f53c | 1077 | break; |
45d5d421 CB |
1078 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1079 | { | |
1080 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1081 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1082 | exclusion_string, |
1083 | msg, | |
1084 | print_channel_name(channel_name), | |
1085 | session_name, opt_filter); | |
1086 | error = 1; | |
1087 | break; | |
1088 | } | |
7671f53c | 1089 | default: |
91744e14 | 1090 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1091 | exclusion_string, |
da3d7d0e JRJ |
1092 | lttng_strerror(command_ret), |
1093 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1094 | ? print_raw_channel_name(channel_name) |
1095 | : print_channel_name(channel_name), | |
1096 | session_name, opt_filter); | |
89476427 | 1097 | error = 1; |
7671f53c CB |
1098 | break; |
1099 | } | |
89476427 JRJ |
1100 | error_holder = command_ret; |
1101 | ||
16363652 | 1102 | } else { |
9c48cab3 JI |
1103 | MSG("Event %s%s: Filter '%s' successfully set", |
1104 | event_name, exclusion_string, | |
1105 | opt_filter); | |
53a80697 | 1106 | } |
9c48cab3 | 1107 | free(exclusion_string); |
53a80697 | 1108 | } |
6181537c | 1109 | |
89476427 JRJ |
1110 | if (lttng_opt_mi) { |
1111 | if (command_ret) { | |
1112 | success = 0; | |
91744e14 | 1113 | ev->enabled = 0; |
89476427 | 1114 | } else { |
91744e14 | 1115 | ev->enabled = 1; |
89476427 JRJ |
1116 | } |
1117 | ||
91744e14 | 1118 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1119 | if (ret) { |
1120 | ret = CMD_ERROR; | |
1121 | goto error; | |
1122 | } | |
1123 | ||
1124 | /* print exclusion */ | |
9f449915 | 1125 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1126 | if (ret) { |
1127 | ret = CMD_ERROR; | |
1128 | goto error; | |
1129 | } | |
1130 | ||
1131 | /* Success ? */ | |
1132 | ret = mi_lttng_writer_write_element_bool(writer, | |
1133 | mi_lttng_element_command_success, success); | |
1134 | if (ret) { | |
1135 | ret = CMD_ERROR; | |
1136 | goto end; | |
1137 | } | |
1138 | ||
1139 | /* Close event element */ | |
1140 | ret = mi_lttng_writer_close_element(writer); | |
1141 | if (ret) { | |
1142 | ret = CMD_ERROR; | |
1143 | goto end; | |
1144 | } | |
1145 | } | |
1146 | ||
f3ed775e DG |
1147 | /* Next event */ |
1148 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1149 | /* Reset warn, error and success */ |
1150 | success = 1; | |
f3ed775e DG |
1151 | } |
1152 | ||
8c9ae521 | 1153 | end: |
89476427 JRJ |
1154 | /* Close Mi */ |
1155 | if (lttng_opt_mi) { | |
1156 | /* Close events element */ | |
1157 | ret = mi_lttng_writer_close_element(writer); | |
1158 | if (ret) { | |
1159 | ret = CMD_ERROR; | |
1160 | goto error; | |
1161 | } | |
1162 | } | |
f3ed775e | 1163 | error: |
ae856491 DG |
1164 | if (warn) { |
1165 | ret = CMD_WARNING; | |
1166 | } | |
89476427 JRJ |
1167 | if (error) { |
1168 | ret = CMD_ERROR; | |
1169 | } | |
cd80958d | 1170 | lttng_destroy_handle(handle); |
9f449915 | 1171 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
0c4e727b | 1172 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1173 | |
89476427 JRJ |
1174 | /* Overwrite ret with error_holder if there was an actual error with |
1175 | * enabling an event. | |
1176 | */ | |
1177 | ret = error_holder ? error_holder : ret; | |
1178 | ||
91744e14 | 1179 | lttng_event_destroy(ev); |
f3ed775e DG |
1180 | return ret; |
1181 | } | |
1182 | ||
1183 | /* | |
6181537c | 1184 | * Add event to trace session |
f3ed775e DG |
1185 | */ |
1186 | int cmd_enable_events(int argc, const char **argv) | |
1187 | { | |
89476427 | 1188 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1189 | static poptContext pc; |
cd80958d | 1190 | char *session_name = NULL; |
68c7f6e5 | 1191 | const char *leftover = NULL; |
de044b7a | 1192 | int event_type = -1; |
f3ed775e DG |
1193 | |
1194 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1195 | poptReadDefaultConfig(pc, 0); | |
1196 | ||
1197 | /* Default event type */ | |
7a3d1328 | 1198 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1199 | |
1200 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1201 | switch (opt) { | |
1202 | case OPT_HELP: | |
4ba92f18 | 1203 | SHOW_HELP(); |
f3ed775e | 1204 | goto end; |
f3ed775e | 1205 | case OPT_TRACEPOINT: |
e6ddca71 | 1206 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1207 | break; |
cf0e5467 | 1208 | case OPT_PROBE: |
7d29a247 | 1209 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1210 | break; |
dcabc190 FD |
1211 | case OPT_USERSPACE_PROBE: |
1212 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1213 | break; | |
f3ed775e DG |
1214 | case OPT_FUNCTION: |
1215 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1216 | break; |
a54bd42d MD |
1217 | case OPT_SYSCALL: |
1218 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1219 | break; |
eeac7d46 MD |
1220 | case OPT_USERSPACE: |
1221 | opt_userspace = 1; | |
eeac7d46 | 1222 | break; |
0cda4f28 | 1223 | case OPT_LOGLEVEL: |
8005f29a | 1224 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1225 | opt_loglevel = poptGetOptArg(pc); |
1226 | break; | |
1227 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1228 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1229 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1230 | break; |
679b4943 SM |
1231 | case OPT_LIST_OPTIONS: |
1232 | list_cmd_options(stdout, long_options); | |
679b4943 | 1233 | goto end; |
53a80697 MD |
1234 | case OPT_FILTER: |
1235 | break; | |
fac3366c JI |
1236 | case OPT_EXCLUDE: |
1237 | break; | |
f3ed775e | 1238 | default: |
f3ed775e DG |
1239 | ret = CMD_UNDEFINED; |
1240 | goto end; | |
1241 | } | |
de044b7a DG |
1242 | |
1243 | /* Validate event type. Multiple event type are not supported. */ | |
1244 | if (event_type == -1) { | |
1245 | event_type = opt_event_type; | |
1246 | } else { | |
1247 | if (event_type != opt_event_type) { | |
1248 | ERR("Multiple event type not supported."); | |
1249 | ret = CMD_ERROR; | |
1250 | goto end; | |
1251 | } | |
1252 | } | |
f3ed775e DG |
1253 | } |
1254 | ||
3ecec76a | 1255 | ret = print_missing_or_multiple_domains( |
3533d06b JG |
1256 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1257 | opt_python, | |
1258 | true); | |
3ecec76a PP |
1259 | if (ret) { |
1260 | ret = CMD_ERROR; | |
1261 | goto end; | |
1262 | } | |
1263 | ||
89476427 JRJ |
1264 | /* Mi check */ |
1265 | if (lttng_opt_mi) { | |
1266 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1267 | if (!writer) { | |
1268 | ret = -LTTNG_ERR_NOMEM; | |
1269 | goto end; | |
1270 | } | |
1271 | ||
1272 | /* Open command element */ | |
1273 | ret = mi_lttng_writer_command_open(writer, | |
1274 | mi_lttng_element_command_enable_event); | |
1275 | if (ret) { | |
1276 | ret = CMD_ERROR; | |
1277 | goto end; | |
1278 | } | |
1279 | ||
1280 | /* Open output element */ | |
1281 | ret = mi_lttng_writer_open_element(writer, | |
1282 | mi_lttng_element_command_output); | |
1283 | if (ret) { | |
1284 | ret = CMD_ERROR; | |
1285 | goto end; | |
1286 | } | |
1287 | } | |
1288 | ||
f3ed775e DG |
1289 | opt_event_list = (char*) poptGetArg(pc); |
1290 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1291 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1292 | ret = CMD_ERROR; |
f3ed775e DG |
1293 | goto end; |
1294 | } | |
1295 | ||
68c7f6e5 JD |
1296 | leftover = poptGetArg(pc); |
1297 | if (leftover) { | |
1298 | ERR("Unknown argument: %s", leftover); | |
1299 | ret = CMD_ERROR; | |
1300 | goto end; | |
1301 | } | |
1302 | ||
cd80958d DG |
1303 | if (!opt_session_name) { |
1304 | session_name = get_session_name(); | |
1305 | if (session_name == NULL) { | |
89476427 JRJ |
1306 | command_ret = CMD_ERROR; |
1307 | success = 0; | |
1308 | goto mi_closing; | |
cd80958d DG |
1309 | } |
1310 | } else { | |
1311 | session_name = opt_session_name; | |
1312 | } | |
1313 | ||
89476427 JRJ |
1314 | command_ret = enable_events(session_name); |
1315 | if (command_ret) { | |
1316 | success = 0; | |
1317 | goto mi_closing; | |
1318 | } | |
1319 | ||
1320 | mi_closing: | |
1321 | /* Mi closing */ | |
1322 | if (lttng_opt_mi) { | |
1323 | /* Close output element */ | |
1324 | ret = mi_lttng_writer_close_element(writer); | |
1325 | if (ret) { | |
1326 | ret = CMD_ERROR; | |
1327 | goto end; | |
1328 | } | |
1329 | ||
1330 | ret = mi_lttng_writer_write_element_bool(writer, | |
1331 | mi_lttng_element_command_success, success); | |
1332 | if (ret) { | |
1333 | ret = CMD_ERROR; | |
1334 | goto end; | |
1335 | } | |
1336 | ||
1337 | /* Command element close */ | |
1338 | ret = mi_lttng_writer_command_close(writer); | |
1339 | if (ret) { | |
1340 | ret = CMD_ERROR; | |
1341 | goto end; | |
1342 | } | |
1343 | } | |
f3ed775e DG |
1344 | |
1345 | end: | |
89476427 JRJ |
1346 | /* Mi clean-up */ |
1347 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1348 | /* Preserve original error code */ | |
1349 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1350 | } | |
1351 | ||
cd80958d DG |
1352 | if (opt_session_name == NULL) { |
1353 | free(session_name); | |
1354 | } | |
1355 | ||
89476427 JRJ |
1356 | /* Overwrite ret if an error occurred in enable_events */ |
1357 | ret = command_ret ? command_ret : ret; | |
1358 | ||
ca1c3607 | 1359 | poptFreeContext(pc); |
f3ed775e DG |
1360 | return ret; |
1361 | } | |
9f449915 | 1362 |