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 | |
89476427 JRJ |
25 | /* Mi dependancy */ |
26 | #include <common/mi-lttng.h> | |
27 | ||
7e8f2e9c JG |
28 | #include <lttng/event-internal.h> |
29 | ||
89476427 | 30 | #include "../command.h" |
7e8f2e9c | 31 | #include "../loglevel.h" |
0c4e727b | 32 | #include "../uprobe.h" |
89476427 | 33 | |
8ab7c0d9 MD |
34 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
35 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
36 | #endif | |
37 | ||
f3ed775e DG |
38 | static char *opt_event_list; |
39 | static int opt_event_type; | |
0cda4f28 MD |
40 | static const char *opt_loglevel; |
41 | static int opt_loglevel_type; | |
6181537c | 42 | static int opt_kernel; |
5440dc42 | 43 | static char *opt_session_name; |
f3ed775e | 44 | static int opt_userspace; |
b9dfb167 | 45 | static int opt_jul; |
5cdb6027 | 46 | static int opt_log4j; |
0e115563 | 47 | static int opt_python; |
f3ed775e | 48 | static int opt_enable_all; |
cf0e5467 | 49 | static char *opt_probe; |
dcabc190 | 50 | static char *opt_userspace_probe; |
8f0d098b | 51 | static char *opt_function; |
f3ed775e | 52 | static char *opt_channel_name; |
53a80697 | 53 | static char *opt_filter; |
fac3366c | 54 | static char *opt_exclude; |
f3ed775e | 55 | |
4fc83d94 PP |
56 | #ifdef LTTNG_EMBED_HELP |
57 | static const char help_msg[] = | |
58 | #include <lttng-enable-event.1.h> | |
59 | ; | |
60 | #endif | |
61 | ||
f3ed775e DG |
62 | enum { |
63 | OPT_HELP = 1, | |
f3ed775e | 64 | OPT_TRACEPOINT, |
cf0e5467 | 65 | OPT_PROBE, |
dcabc190 | 66 | OPT_USERSPACE_PROBE, |
f3ed775e | 67 | OPT_FUNCTION, |
a54bd42d | 68 | OPT_SYSCALL, |
eeac7d46 | 69 | OPT_USERSPACE, |
0cda4f28 MD |
70 | OPT_LOGLEVEL, |
71 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 72 | OPT_LIST_OPTIONS, |
53a80697 | 73 | OPT_FILTER, |
fac3366c | 74 | OPT_EXCLUDE, |
f3ed775e DG |
75 | }; |
76 | ||
cd80958d | 77 | static struct lttng_handle *handle; |
89476427 | 78 | static struct mi_writer *writer; |
cd80958d | 79 | |
f3ed775e DG |
80 | static struct poptOption long_options[] = { |
81 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
82 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 83 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 84 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
85 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
86 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 87 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 88 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 89 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 90 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
f3ed775e | 91 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 92 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
dcabc190 | 93 | {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0}, |
40e9d5d3 | 94 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
7ebae521 | 95 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
96 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
97 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 98 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 99 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 100 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
101 | {0, 0, 0, 0, 0, 0, 0} |
102 | }; | |
103 | ||
0d63dd19 | 104 | /* |
6181537c | 105 | * Parse probe options. |
0d63dd19 | 106 | */ |
cf0e5467 | 107 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 108 | { |
49d4e302 JRJ |
109 | int ret = CMD_SUCCESS; |
110 | int match; | |
8ff0bbd0 | 111 | char s_hex[19]; |
8ab7c0d9 | 112 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
113 | char name[LTTNG_SYMBOL_NAME_LEN]; |
114 | ||
115 | if (opt == NULL) { | |
49d4e302 | 116 | ret = CMD_ERROR; |
8f0d098b | 117 | goto end; |
0d63dd19 DG |
118 | } |
119 | ||
120 | /* Check for symbol+offset */ | |
49d4e302 | 121 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 122 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 123 | if (match == 2) { |
7d29a247 | 124 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 125 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 126 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 127 | if (*s_hex == '\0') { |
8ff0bbd0 | 128 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 129 | ret = CMD_ERROR; |
8f0d098b | 130 | goto end; |
0d63dd19 | 131 | } |
8ff0bbd0 | 132 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 133 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 134 | ev->attr.probe.addr = 0; |
8f0d098b MD |
135 | goto end; |
136 | } | |
137 | ||
138 | /* Check for symbol */ | |
88c91427 | 139 | if (isalpha(name[0]) || name[0] == '_') { |
49d4e302 | 140 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 141 | name); |
49d4e302 | 142 | if (match == 1) { |
8f0d098b | 143 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 144 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
145 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
146 | ev->attr.probe.offset = 0; | |
147 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
148 | ev->attr.probe.addr = 0; | |
149 | goto end; | |
150 | } | |
0d63dd19 DG |
151 | } |
152 | ||
153 | /* Check for address */ | |
49d4e302 JRJ |
154 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
155 | if (match > 0) { | |
531be721 FD |
156 | /* |
157 | * Return an error if the first character of the tentative | |
158 | * address is NULL or not a digit. It can be "0" if the address | |
159 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
160 | */ | |
161 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
162 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 163 | ret = CMD_ERROR; |
8f0d098b | 164 | goto end; |
0d63dd19 | 165 | } |
8ff0bbd0 | 166 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 167 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
168 | ev->attr.probe.offset = 0; |
169 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 170 | goto end; |
0d63dd19 DG |
171 | } |
172 | ||
173 | /* No match */ | |
49d4e302 | 174 | ret = CMD_ERROR; |
0d63dd19 | 175 | |
8f0d098b | 176 | end: |
0d63dd19 DG |
177 | return ret; |
178 | } | |
179 | ||
85076754 MD |
180 | static |
181 | const char *print_channel_name(const char *name) | |
182 | { | |
183 | return name ? : DEFAULT_CHANNEL_NAME; | |
184 | } | |
185 | ||
186 | static | |
187 | const char *print_raw_channel_name(const char *name) | |
188 | { | |
189 | return name ? : "<default>"; | |
190 | } | |
191 | ||
89476427 JRJ |
192 | /* |
193 | * Mi print exlcusion list | |
194 | */ | |
195 | static | |
9f449915 | 196 | int mi_print_exclusion(char **names) |
89476427 JRJ |
197 | { |
198 | int i, ret; | |
9f449915 | 199 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
200 | |
201 | assert(writer); | |
202 | ||
203 | if (count == 0) { | |
204 | ret = 0; | |
205 | goto end; | |
206 | } | |
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++) { | |
213 | ret = mi_lttng_writer_write_element_string(writer, | |
214 | config_element_exclusion, names[i]); | |
215 | if (ret) { | |
216 | goto end; | |
217 | } | |
218 | } | |
219 | ||
220 | /* Close exclusions element */ | |
221 | ret = mi_lttng_writer_close_element(writer); | |
222 | ||
223 | end: | |
224 | return ret; | |
225 | } | |
226 | ||
9c48cab3 JI |
227 | /* |
228 | * Return allocated string for pretty-printing exclusion names. | |
229 | */ | |
230 | static | |
9f449915 | 231 | char *print_exclusions(char **names) |
9c48cab3 JI |
232 | { |
233 | int length = 0; | |
234 | int i; | |
bfe36393 | 235 | const char preamble[] = " excluding "; |
9c48cab3 | 236 | char *ret; |
9f449915 | 237 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
238 | |
239 | if (count == 0) { | |
240 | return strdup(""); | |
241 | } | |
242 | ||
243 | /* calculate total required length */ | |
244 | for (i = 0; i < count; i++) { | |
9f449915 | 245 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
246 | } |
247 | ||
bfe36393 JG |
248 | length += sizeof(preamble); |
249 | ret = zmalloc(length); | |
fd591b18 MD |
250 | if (!ret) { |
251 | return NULL; | |
252 | } | |
9c48cab3 JI |
253 | strncpy(ret, preamble, length); |
254 | for (i = 0; i < count; i++) { | |
9f449915 | 255 | strcat(ret, "\""); |
9c48cab3 | 256 | strcat(ret, names[i]); |
9f449915 | 257 | strcat(ret, "\""); |
9c48cab3 | 258 | if (i != count - 1) { |
9f449915 | 259 | strcat(ret, ", "); |
9c48cab3 JI |
260 | } |
261 | } | |
89476427 | 262 | |
9c48cab3 JI |
263 | return ret; |
264 | } | |
265 | ||
748bde76 | 266 | static |
9f449915 | 267 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 268 | { |
9f449915 PP |
269 | bool warn = false; |
270 | int ret = 0; | |
271 | const char *e = event_name; | |
272 | const char *x = exclusion; | |
273 | ||
274 | /* Scan both the excluder and the event letter by letter */ | |
275 | while (true) { | |
276 | if (*e == '\\') { | |
277 | if (*x != *e) { | |
278 | warn = true; | |
279 | goto end; | |
280 | } | |
748bde76 | 281 | |
9f449915 PP |
282 | e++; |
283 | x++; | |
284 | goto cmp_chars; | |
285 | } | |
286 | ||
287 | if (*x == '*') { | |
288 | /* Event is a subset of the excluder */ | |
289 | ERR("Event %s: %s excludes all events from %s", | |
290 | event_name, exclusion, event_name); | |
291 | goto error; | |
292 | } | |
293 | ||
294 | if (*e == '*') { | |
295 | /* | |
296 | * Reached the end of the event name before the | |
297 | * end of the exclusion: this is valid. | |
298 | */ | |
299 | goto end; | |
300 | } | |
301 | ||
302 | cmp_chars: | |
303 | if (*x != *e) { | |
304 | warn = true; | |
305 | break; | |
306 | } | |
307 | ||
308 | x++; | |
309 | e++; | |
748bde76 JI |
310 | } |
311 | ||
9f449915 | 312 | goto end; |
748bde76 | 313 | |
9f449915 PP |
314 | error: |
315 | ret = -1; | |
748bde76 | 316 | |
9f449915 PP |
317 | end: |
318 | if (warn) { | |
319 | WARN("Event %s: %s does not exclude any events from %s", | |
320 | event_name, exclusion, event_name); | |
321 | } | |
748bde76 | 322 | |
9f449915 PP |
323 | return ret; |
324 | } | |
325 | ||
9f449915 PP |
326 | static |
327 | int create_exclusion_list_and_validate(const char *event_name, | |
328 | const char *exclusions_arg, | |
329 | char ***exclusion_list) | |
330 | { | |
331 | int ret = 0; | |
332 | char **exclusions = NULL; | |
333 | ||
334 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
335 | if (!strutils_is_star_glob_pattern(event_name)) { | |
336 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
337 | event_name); | |
338 | goto error; | |
339 | } | |
340 | ||
341 | /* Split exclusions. */ | |
342 | exclusions = strutils_split(exclusions_arg, ',', true); | |
343 | if (!exclusions) { | |
344 | goto error; | |
345 | } | |
346 | ||
347 | /* | |
348 | * If the event name is a star-at-end only globbing pattern, | |
349 | * then we can validate the individual exclusions. Otherwise | |
350 | * all exclusions are passed to the session daemon. | |
351 | */ | |
352 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
353 | char * const *exclusion; | |
354 | ||
355 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
356 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
357 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 358 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 359 | if (ret) { |
5ef79758 MD |
360 | goto error; |
361 | } | |
748bde76 | 362 | } |
748bde76 JI |
363 | } |
364 | } | |
9f449915 PP |
365 | |
366 | *exclusion_list = exclusions; | |
367 | ||
748bde76 | 368 | goto end; |
9f449915 | 369 | |
748bde76 | 370 | error: |
9f449915 PP |
371 | ret = -1; |
372 | strutils_free_null_terminated_array_of_strings(exclusions); | |
373 | ||
748bde76 | 374 | end: |
748bde76 JI |
375 | return ret; |
376 | } | |
502bbe89 | 377 | |
9f449915 PP |
378 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
379 | int *warn) | |
502bbe89 | 380 | { |
9f449915 | 381 | char * const *exclusion; |
502bbe89 | 382 | |
9f449915 PP |
383 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
384 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 385 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 386 | *exclusion); |
502bbe89 PP |
387 | *warn = 1; |
388 | } | |
389 | } | |
390 | } | |
391 | ||
f3ed775e | 392 | /* |
6181537c | 393 | * Enabling event using the lttng API. |
89476427 | 394 | * Note: in case of error only the last error code will be return. |
f3ed775e | 395 | */ |
cd80958d | 396 | static int enable_events(char *session_name) |
f3ed775e | 397 | { |
89476427 JRJ |
398 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
399 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 400 | char *event_name, *channel_name = NULL; |
91744e14 | 401 | struct lttng_event *ev; |
7d29a247 | 402 | struct lttng_domain dom; |
7ed70bc9 | 403 | char **exclusion_list = NULL; |
0c4e727b | 404 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 405 | |
441c16a7 MD |
406 | memset(&dom, 0, sizeof(dom)); |
407 | ||
91744e14 FD |
408 | ev = lttng_event_create(); |
409 | if (!ev) { | |
410 | ret = CMD_ERROR; | |
411 | goto error; | |
412 | } | |
413 | ||
53a80697 | 414 | if (opt_kernel) { |
67b58630 JG |
415 | if (opt_loglevel) { |
416 | WARN("Kernel loglevels are not supported."); | |
417 | } | |
53a80697 MD |
418 | } |
419 | ||
7d29a247 DG |
420 | /* Create lttng domain */ |
421 | if (opt_kernel) { | |
422 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 423 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 424 | } else if (opt_userspace) { |
2bdd86d4 | 425 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 426 | /* Default. */ |
8692d4e5 | 427 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
428 | } else if (opt_jul) { |
429 | dom.type = LTTNG_DOMAIN_JUL; | |
430 | /* Default. */ | |
431 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
432 | } else if (opt_log4j) { |
433 | dom.type = LTTNG_DOMAIN_LOG4J; | |
434 | /* Default. */ | |
435 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
436 | } else if (opt_python) { |
437 | dom.type = LTTNG_DOMAIN_PYTHON; | |
438 | /* Default. */ | |
439 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 440 | } else { |
3ecec76a PP |
441 | /* Checked by the caller. */ |
442 | assert(0); | |
2bdd86d4 | 443 | } |
7d29a247 | 444 | |
8b08c525 AB |
445 | if (opt_exclude) { |
446 | switch (dom.type) { | |
447 | case LTTNG_DOMAIN_KERNEL: | |
448 | case LTTNG_DOMAIN_JUL: | |
449 | case LTTNG_DOMAIN_LOG4J: | |
450 | case LTTNG_DOMAIN_PYTHON: | |
451 | ERR("Event name exclusions are not yet implemented for %s events", | |
452 | get_domain_str(dom.type)); | |
453 | ret = CMD_ERROR; | |
454 | goto error; | |
455 | case LTTNG_DOMAIN_UST: | |
456 | /* Exclusions supported */ | |
457 | break; | |
458 | default: | |
459 | assert(0); | |
460 | } | |
d5dd17fd JI |
461 | } |
462 | ||
4fd2697f FD |
463 | /* |
464 | * Adding a filter to a probe, function or userspace-probe would be | |
465 | * denied by the kernel tracer as it's not supported at the moment. We | |
466 | * do an early check here to warn the user. | |
467 | */ | |
468 | if (opt_filter && opt_kernel) { | |
469 | switch (opt_event_type) { | |
470 | case LTTNG_EVENT_ALL: | |
471 | case LTTNG_EVENT_TRACEPOINT: | |
472 | case LTTNG_EVENT_SYSCALL: | |
473 | break; | |
474 | case LTTNG_EVENT_PROBE: | |
475 | case LTTNG_EVENT_USERSPACE_PROBE: | |
476 | case LTTNG_EVENT_FUNCTION: | |
477 | ERR("Filter expressions are not supported for %s events", | |
478 | get_event_type_str(opt_event_type)); | |
479 | ret = CMD_ERROR; | |
480 | goto error; | |
481 | default: | |
482 | ret = CMD_UNDEFINED; | |
483 | goto error; | |
484 | } | |
485 | } | |
486 | ||
85076754 | 487 | channel_name = opt_channel_name; |
ae856491 | 488 | |
cd80958d DG |
489 | handle = lttng_create_handle(session_name, &dom); |
490 | if (handle == NULL) { | |
491 | ret = -1; | |
492 | goto error; | |
493 | } | |
1aef21b6 | 494 | |
89476427 JRJ |
495 | /* Prepare Mi */ |
496 | if (lttng_opt_mi) { | |
497 | /* Open a events element */ | |
498 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
499 | if (ret) { | |
500 | ret = CMD_ERROR; | |
501 | goto error; | |
502 | } | |
503 | } | |
504 | ||
cd80958d | 505 | if (opt_enable_all) { |
8c9ae521 | 506 | /* Default setup for enable all */ |
75e8c5ab | 507 | if (opt_kernel) { |
91744e14 FD |
508 | ev->type = opt_event_type; |
509 | strcpy(ev->name, "*"); | |
300b8fd5 | 510 | /* kernel loglevels not implemented */ |
91744e14 | 511 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 512 | } else { |
91744e14 FD |
513 | ev->type = LTTNG_EVENT_TRACEPOINT; |
514 | strcpy(ev->name, "*"); | |
515 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 516 | if (opt_loglevel) { |
7e8f2e9c JG |
517 | int name_search_ret; |
518 | ||
0e115563 | 519 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 520 | |
b2064f54 | 521 | if (opt_userspace) { |
7e8f2e9c JG |
522 | enum lttng_loglevel loglevel; |
523 | ||
524 | name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
525 | ev->loglevel = (int) loglevel; | |
b2064f54 | 526 | } else if (opt_jul) { |
7e8f2e9c JG |
527 | enum lttng_loglevel_jul loglevel; |
528 | ||
529 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
530 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 531 | } else if (opt_log4j) { |
7e8f2e9c JG |
532 | enum lttng_loglevel_log4j loglevel; |
533 | ||
534 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
535 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
536 | } else { |
537 | /* python domain. */ | |
7e8f2e9c JG |
538 | enum lttng_loglevel_python loglevel; |
539 | ||
540 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
541 | ev->loglevel = (int) loglevel; | |
b2064f54 | 542 | } |
7e8f2e9c JG |
543 | |
544 | if (name_search_ret == -1) { | |
300b8fd5 | 545 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 546 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
547 | goto error; |
548 | } | |
22e25b71 | 549 | } else { |
0e115563 | 550 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 551 | if (opt_userspace) { |
91744e14 | 552 | ev->loglevel = -1; |
34aa3685 | 553 | } else if (opt_jul) { |
91744e14 | 554 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 555 | } else if (opt_log4j) { |
91744e14 | 556 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 557 | } else if (opt_python) { |
91744e14 | 558 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 559 | } |
300b8fd5 | 560 | } |
75e8c5ab | 561 | } |
8c9ae521 | 562 | |
7ed70bc9 | 563 | if (opt_exclude) { |
9f449915 PP |
564 | ret = create_exclusion_list_and_validate("*", |
565 | opt_exclude, &exclusion_list); | |
566 | if (ret) { | |
567 | ret = CMD_ERROR; | |
7ed70bc9 JI |
568 | goto error; |
569 | } | |
502bbe89 | 570 | |
91744e14 | 571 | ev->exclusion = 1; |
502bbe89 | 572 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 573 | &warn); |
7ed70bc9 | 574 | } |
025faf73 | 575 | if (!opt_filter) { |
7ed70bc9 | 576 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 577 | ev, channel_name, |
7ed70bc9 | 578 | NULL, |
9f449915 PP |
579 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
580 | exclusion_list); | |
025faf73 DG |
581 | if (ret < 0) { |
582 | switch (-ret) { | |
583 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
584 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 585 | print_channel_name(channel_name), session_name); |
89476427 | 586 | warn = 1; |
025faf73 | 587 | break; |
45d5d421 CB |
588 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
589 | { | |
590 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
591 | ERR("Events: %s (channel %s, session %s)", | |
592 | msg, | |
593 | print_channel_name(channel_name), | |
594 | session_name); | |
595 | error = 1; | |
596 | break; | |
597 | } | |
025faf73 DG |
598 | default: |
599 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
600 | lttng_strerror(ret), |
601 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
602 | ? print_raw_channel_name(channel_name) | |
603 | : print_channel_name(channel_name), | |
604 | session_name); | |
89476427 | 605 | error = 1; |
025faf73 DG |
606 | break; |
607 | } | |
608 | goto end; | |
42224349 | 609 | } |
8c9ae521 | 610 | |
025faf73 DG |
611 | switch (opt_event_type) { |
612 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 613 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 614 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
615 | |
616 | if (!exclusion_string) { | |
617 | PERROR("Cannot allocate exclusion_string"); | |
618 | error = 1; | |
619 | goto end; | |
620 | } | |
9c48cab3 | 621 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 622 | get_domain_str(dom.type), |
9c48cab3 | 623 | exclusion_string, |
85076754 | 624 | print_channel_name(channel_name), |
025faf73 | 625 | opt_loglevel); |
9c48cab3 | 626 | free(exclusion_string); |
025faf73 | 627 | } else { |
9f449915 | 628 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
629 | |
630 | if (!exclusion_string) { | |
631 | PERROR("Cannot allocate exclusion_string"); | |
632 | error = 1; | |
633 | goto end; | |
634 | } | |
9c48cab3 | 635 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 636 | get_domain_str(dom.type), |
9c48cab3 | 637 | exclusion_string, |
85076754 | 638 | print_channel_name(channel_name)); |
9c48cab3 | 639 | free(exclusion_string); |
025faf73 DG |
640 | } |
641 | break; | |
642 | case LTTNG_EVENT_SYSCALL: | |
643 | if (opt_kernel) { | |
6e911cad MD |
644 | MSG("All %s system calls are enabled in channel %s", |
645 | get_domain_str(dom.type), | |
85076754 | 646 | print_channel_name(channel_name)); |
025faf73 DG |
647 | } |
648 | break; | |
649 | case LTTNG_EVENT_ALL: | |
67b58630 | 650 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 651 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
652 | |
653 | if (!exclusion_string) { | |
654 | PERROR("Cannot allocate exclusion_string"); | |
655 | error = 1; | |
656 | goto end; | |
657 | } | |
9c48cab3 | 658 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 659 | get_domain_str(dom.type), |
9c48cab3 | 660 | exclusion_string, |
85076754 | 661 | print_channel_name(channel_name), |
025faf73 | 662 | opt_loglevel); |
9c48cab3 | 663 | free(exclusion_string); |
025faf73 | 664 | } else { |
9f449915 | 665 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
666 | |
667 | if (!exclusion_string) { | |
668 | PERROR("Cannot allocate exclusion_string"); | |
669 | error = 1; | |
670 | goto end; | |
671 | } | |
9c48cab3 | 672 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 673 | get_domain_str(dom.type), |
9c48cab3 | 674 | exclusion_string, |
85076754 | 675 | print_channel_name(channel_name)); |
9c48cab3 | 676 | free(exclusion_string); |
025faf73 DG |
677 | } |
678 | break; | |
679 | default: | |
680 | /* | |
681 | * We should not be here since lttng_enable_event should have | |
682 | * failed on the event type. | |
683 | */ | |
684 | goto error; | |
57064ada | 685 | } |
f3ed775e | 686 | } |
89476427 | 687 | |
025faf73 | 688 | if (opt_filter) { |
91744e14 | 689 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
690 | opt_filter, |
691 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
692 | exclusion_list); | |
89476427 JRJ |
693 | if (command_ret < 0) { |
694 | switch (-command_ret) { | |
16363652 | 695 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 696 | WARN("Filter on all events is already enabled" |
16363652 | 697 | " (channel %s, session %s)", |
85076754 | 698 | print_channel_name(channel_name), session_name); |
89476427 | 699 | warn = 1; |
16363652 | 700 | break; |
45d5d421 CB |
701 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
702 | { | |
703 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
704 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
705 | msg, | |
706 | print_channel_name(channel_name), | |
707 | session_name, opt_filter); | |
708 | error = 1; | |
709 | break; | |
710 | } | |
16363652 | 711 | default: |
85076754 | 712 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
713 | lttng_strerror(command_ret), |
714 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
715 | ? print_raw_channel_name(channel_name) |
716 | : print_channel_name(channel_name), | |
717 | session_name, opt_filter); | |
89476427 | 718 | error = 1; |
16363652 DG |
719 | break; |
720 | } | |
89476427 | 721 | error_holder = command_ret; |
16363652 | 722 | } else { |
91744e14 | 723 | ev->filter = 1; |
16363652 DG |
724 | MSG("Filter '%s' successfully set", opt_filter); |
725 | } | |
726 | } | |
89476427 JRJ |
727 | |
728 | if (lttng_opt_mi) { | |
729 | /* The wildcard * is used for kernel and ust domain to | |
730 | * represent ALL. We copy * in event name to force the wildcard use | |
731 | * for kernel domain | |
732 | * | |
733 | * Note: this is strictly for semantic and printing while in | |
734 | * machine interface mode. | |
735 | */ | |
91744e14 | 736 | strcpy(ev->name, "*"); |
89476427 JRJ |
737 | |
738 | /* If we reach here the events are enabled */ | |
739 | if (!error && !warn) { | |
91744e14 | 740 | ev->enabled = 1; |
89476427 | 741 | } else { |
91744e14 | 742 | ev->enabled = 0; |
89476427 JRJ |
743 | success = 0; |
744 | } | |
91744e14 | 745 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
746 | if (ret) { |
747 | ret = CMD_ERROR; | |
748 | goto error; | |
749 | } | |
750 | ||
751 | /* print exclusion */ | |
9f449915 | 752 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
753 | if (ret) { |
754 | ret = CMD_ERROR; | |
755 | goto error; | |
756 | } | |
757 | ||
758 | /* Success ? */ | |
759 | ret = mi_lttng_writer_write_element_bool(writer, | |
760 | mi_lttng_element_command_success, success); | |
761 | if (ret) { | |
762 | ret = CMD_ERROR; | |
763 | goto error; | |
764 | } | |
765 | ||
766 | /* Close event element */ | |
767 | ret = mi_lttng_writer_close_element(writer); | |
768 | if (ret) { | |
769 | ret = CMD_ERROR; | |
770 | goto error; | |
771 | } | |
772 | } | |
773 | ||
8c9ae521 | 774 | goto end; |
f3ed775e DG |
775 | } |
776 | ||
777 | /* Strip event list */ | |
778 | event_name = strtok(opt_event_list, ","); | |
779 | while (event_name != NULL) { | |
6181537c | 780 | /* Copy name and type of the event */ |
91744e14 FD |
781 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
782 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
783 | ev->type = opt_event_type; | |
6181537c | 784 | |
f3ed775e DG |
785 | /* Kernel tracer action */ |
786 | if (opt_kernel) { | |
787 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
788 | event_name, |
789 | print_channel_name(channel_name)); | |
f3ed775e DG |
790 | |
791 | switch (opt_event_type) { | |
29c62722 MD |
792 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
793 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
794 | if (strcmp(ev->name, "*")) { |
795 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
796 | } |
797 | break; | |
e6ddca71 | 798 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 799 | break; |
7d29a247 | 800 | case LTTNG_EVENT_PROBE: |
91744e14 | 801 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 802 | if (ret) { |
cf0e5467 | 803 | ERR("Unable to parse probe options"); |
91744e14 | 804 | ret = CMD_ERROR; |
0d63dd19 DG |
805 | goto error; |
806 | } | |
f3ed775e | 807 | break; |
dcabc190 | 808 | case LTTNG_EVENT_USERSPACE_PROBE: |
0c4e727b JR |
809 | assert(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
810 | ||
811 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 812 | if (ret) { |
36aa2f64 FD |
813 | switch (ret) { |
814 | case CMD_UNSUPPORTED: | |
815 | /* | |
816 | * Error message describing | |
817 | * what is not supported was | |
818 | * printed in the function. | |
819 | */ | |
820 | break; | |
821 | case CMD_ERROR: | |
822 | default: | |
823 | ERR("Unable to parse userspace probe options"); | |
824 | break; | |
825 | } | |
dcabc190 FD |
826 | goto error; |
827 | } | |
0c4e727b JR |
828 | |
829 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
830 | if (ret) { | |
831 | WARN("Failed to set probe location on event"); | |
832 | ret = CMD_ERROR; | |
833 | goto error; | |
834 | } | |
835 | ||
836 | /* Ownership of the uprobe location was transferred to the event. */ | |
837 | uprobe_loc = NULL; | |
dcabc190 | 838 | break; |
f3ed775e | 839 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 840 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 841 | if (ret) { |
8f0d098b | 842 | ERR("Unable to parse function probe options"); |
91744e14 | 843 | ret = CMD_ERROR; |
8f0d098b MD |
844 | goto error; |
845 | } | |
846 | break; | |
a54bd42d | 847 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 848 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 849 | break; |
f3ed775e | 850 | default: |
1ab1ea0b | 851 | ret = CMD_UNDEFINED; |
f3ed775e DG |
852 | goto error; |
853 | } | |
0cda4f28 | 854 | |
0cda4f28 | 855 | /* kernel loglevels not implemented */ |
91744e14 | 856 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 857 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 858 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 859 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
860 | |
861 | switch (opt_event_type) { | |
862 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
863 | /* Fall-through */ |
864 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 865 | /* Copy name and type of the event */ |
91744e14 FD |
866 | ev->type = LTTNG_EVENT_TRACEPOINT; |
867 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
868 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
869 | break; |
870 | case LTTNG_EVENT_PROBE: | |
871 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 872 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 873 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 874 | default: |
cc62c0c0 | 875 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 876 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
877 | goto error; |
878 | } | |
0cda4f28 | 879 | |
7ed70bc9 | 880 | if (opt_exclude) { |
91744e14 | 881 | ev->exclusion = 1; |
d5dd17fd JI |
882 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
883 | ERR("Exclusion option can only be used with tracepoint events"); | |
884 | ret = CMD_ERROR; | |
885 | goto error; | |
886 | } | |
7ed70bc9 | 887 | /* Free previously allocated items */ |
9f449915 PP |
888 | strutils_free_null_terminated_array_of_strings( |
889 | exclusion_list); | |
890 | exclusion_list = NULL; | |
891 | ret = create_exclusion_list_and_validate( | |
892 | event_name, opt_exclude, | |
893 | &exclusion_list); | |
894 | if (ret) { | |
895 | ret = CMD_ERROR; | |
7ed70bc9 JI |
896 | goto error; |
897 | } | |
502bbe89 PP |
898 | |
899 | warn_on_truncated_exclusion_names( | |
9f449915 | 900 | exclusion_list, &warn); |
7ed70bc9 JI |
901 | } |
902 | ||
91744e14 | 903 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 904 | if (opt_loglevel) { |
7e8f2e9c JG |
905 | enum lttng_loglevel loglevel; |
906 | const int name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
907 | ||
908 | if (name_search_ret == -1) { | |
8005f29a | 909 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 910 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
911 | goto error; |
912 | } | |
7e8f2e9c JG |
913 | |
914 | ev->loglevel = (int) loglevel; | |
22e25b71 | 915 | } else { |
91744e14 | 916 | ev->loglevel = -1; |
ed7f4083 | 917 | } |
0e115563 | 918 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
919 | if (opt_event_type != LTTNG_EVENT_ALL && |
920 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 921 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
922 | ret = CMD_UNSUPPORTED; |
923 | goto error; | |
924 | } | |
b2064f54 | 925 | |
91744e14 | 926 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 927 | if (opt_loglevel) { |
7e8f2e9c JG |
928 | int name_search_ret; |
929 | ||
5cdb6027 | 930 | if (opt_jul) { |
7e8f2e9c JG |
931 | enum lttng_loglevel_jul loglevel; |
932 | ||
933 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
934 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 935 | } else if (opt_log4j) { |
7e8f2e9c JG |
936 | enum lttng_loglevel_log4j loglevel; |
937 | ||
938 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
939 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
940 | } else { |
941 | /* python domain. */ | |
7e8f2e9c JG |
942 | enum lttng_loglevel_python loglevel; |
943 | ||
944 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
945 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 946 | } |
7e8f2e9c JG |
947 | |
948 | if (name_search_ret) { | |
b2064f54 DG |
949 | ERR("Unknown loglevel %s", opt_loglevel); |
950 | ret = -LTTNG_ERR_INVALID; | |
951 | goto error; | |
952 | } | |
953 | } else { | |
5cdb6027 | 954 | if (opt_jul) { |
91744e14 | 955 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 956 | } else if (opt_log4j) { |
91744e14 | 957 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 958 | } else if (opt_python) { |
91744e14 | 959 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 960 | } |
b2064f54 | 961 | } |
91744e14 FD |
962 | ev->type = LTTNG_EVENT_TRACEPOINT; |
963 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
964 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 965 | } else { |
3ecec76a | 966 | assert(0); |
f3ed775e DG |
967 | } |
968 | ||
025faf73 | 969 | if (!opt_filter) { |
9c48cab3 JI |
970 | char *exclusion_string; |
971 | ||
89476427 | 972 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 973 | ev, channel_name, |
9f449915 PP |
974 | NULL, |
975 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
976 | exclusion_list); | |
977 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
978 | if (!exclusion_string) { |
979 | PERROR("Cannot allocate exclusion_string"); | |
980 | error = 1; | |
981 | goto end; | |
982 | } | |
89476427 | 983 | if (command_ret < 0) { |
025faf73 | 984 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 985 | switch (-command_ret) { |
025faf73 | 986 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 987 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 988 | event_name, |
9c48cab3 | 989 | exclusion_string, |
85076754 | 990 | print_channel_name(channel_name), session_name); |
89476427 | 991 | warn = 1; |
025faf73 | 992 | break; |
45d5d421 CB |
993 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
994 | { | |
995 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
996 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
997 | exclusion_string, | |
998 | msg, | |
999 | print_channel_name(channel_name), | |
1000 | session_name); | |
1001 | error = 1; | |
1002 | break; | |
1003 | } | |
dcabc190 FD |
1004 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1005 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1006 | event_name, print_channel_name(channel_name), | |
1007 | session_name); | |
1008 | error = 1; | |
1009 | break; | |
025faf73 | 1010 | default: |
9c48cab3 JI |
1011 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1012 | exclusion_string, | |
da3d7d0e JRJ |
1013 | lttng_strerror(command_ret), |
1014 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1015 | ? print_raw_channel_name(channel_name) |
1016 | : print_channel_name(channel_name), | |
1017 | session_name); | |
89476427 | 1018 | error = 1; |
025faf73 DG |
1019 | break; |
1020 | } | |
89476427 | 1021 | error_holder = command_ret; |
025faf73 | 1022 | } else { |
8274eeba AB |
1023 | switch (dom.type) { |
1024 | case LTTNG_DOMAIN_KERNEL: | |
1025 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1026 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1027 | get_domain_str(dom.type), |
1028 | event_name, | |
1029 | exclusion_string, | |
1030 | print_channel_name(channel_name)); | |
1031 | break; | |
1032 | case LTTNG_DOMAIN_JUL: | |
1033 | case LTTNG_DOMAIN_LOG4J: | |
1034 | case LTTNG_DOMAIN_PYTHON: | |
1035 | /* | |
1036 | * Don't print the default channel | |
1037 | * name for agent domains. | |
1038 | */ | |
895707da | 1039 | MSG("%s event %s%s enabled", |
8274eeba AB |
1040 | get_domain_str(dom.type), |
1041 | event_name, | |
1042 | exclusion_string); | |
1043 | break; | |
1044 | default: | |
1045 | assert(0); | |
49ceaa70 | 1046 | } |
42224349 | 1047 | } |
9c48cab3 | 1048 | free(exclusion_string); |
6181537c | 1049 | } |
025faf73 DG |
1050 | |
1051 | if (opt_filter) { | |
9c48cab3 JI |
1052 | char *exclusion_string; |
1053 | ||
89476427 | 1054 | /* Filter present */ |
91744e14 | 1055 | ev->filter = 1; |
89476427 | 1056 | |
91744e14 | 1057 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1058 | opt_filter, |
1059 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1060 | exclusion_list); | |
1061 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1062 | if (!exclusion_string) { |
1063 | PERROR("Cannot allocate exclusion_string"); | |
1064 | error = 1; | |
1065 | goto end; | |
1066 | } | |
89476427 JRJ |
1067 | if (command_ret < 0) { |
1068 | switch (-command_ret) { | |
7671f53c | 1069 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1070 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1071 | " (channel %s, session %s)", |
85076754 | 1072 | event_name, |
9c48cab3 | 1073 | exclusion_string, |
85076754 | 1074 | print_channel_name(channel_name), session_name); |
89476427 | 1075 | warn = 1; |
7671f53c | 1076 | break; |
45d5d421 CB |
1077 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1078 | { | |
1079 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1080 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1081 | exclusion_string, |
1082 | msg, | |
1083 | print_channel_name(channel_name), | |
1084 | session_name, opt_filter); | |
1085 | error = 1; | |
1086 | break; | |
1087 | } | |
7671f53c | 1088 | default: |
91744e14 | 1089 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1090 | exclusion_string, |
da3d7d0e JRJ |
1091 | lttng_strerror(command_ret), |
1092 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1093 | ? print_raw_channel_name(channel_name) |
1094 | : print_channel_name(channel_name), | |
1095 | session_name, opt_filter); | |
89476427 | 1096 | error = 1; |
7671f53c CB |
1097 | break; |
1098 | } | |
89476427 JRJ |
1099 | error_holder = command_ret; |
1100 | ||
16363652 | 1101 | } else { |
9c48cab3 JI |
1102 | MSG("Event %s%s: Filter '%s' successfully set", |
1103 | event_name, exclusion_string, | |
1104 | opt_filter); | |
53a80697 | 1105 | } |
9c48cab3 | 1106 | free(exclusion_string); |
53a80697 | 1107 | } |
6181537c | 1108 | |
89476427 JRJ |
1109 | if (lttng_opt_mi) { |
1110 | if (command_ret) { | |
1111 | success = 0; | |
91744e14 | 1112 | ev->enabled = 0; |
89476427 | 1113 | } else { |
91744e14 | 1114 | ev->enabled = 1; |
89476427 JRJ |
1115 | } |
1116 | ||
91744e14 | 1117 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1118 | if (ret) { |
1119 | ret = CMD_ERROR; | |
1120 | goto error; | |
1121 | } | |
1122 | ||
1123 | /* print exclusion */ | |
9f449915 | 1124 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1125 | if (ret) { |
1126 | ret = CMD_ERROR; | |
1127 | goto error; | |
1128 | } | |
1129 | ||
1130 | /* Success ? */ | |
1131 | ret = mi_lttng_writer_write_element_bool(writer, | |
1132 | mi_lttng_element_command_success, success); | |
1133 | if (ret) { | |
1134 | ret = CMD_ERROR; | |
1135 | goto end; | |
1136 | } | |
1137 | ||
1138 | /* Close event element */ | |
1139 | ret = mi_lttng_writer_close_element(writer); | |
1140 | if (ret) { | |
1141 | ret = CMD_ERROR; | |
1142 | goto end; | |
1143 | } | |
1144 | } | |
1145 | ||
f3ed775e DG |
1146 | /* Next event */ |
1147 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1148 | /* Reset warn, error and success */ |
1149 | success = 1; | |
f3ed775e DG |
1150 | } |
1151 | ||
8c9ae521 | 1152 | end: |
89476427 JRJ |
1153 | /* Close Mi */ |
1154 | if (lttng_opt_mi) { | |
1155 | /* Close events element */ | |
1156 | ret = mi_lttng_writer_close_element(writer); | |
1157 | if (ret) { | |
1158 | ret = CMD_ERROR; | |
1159 | goto error; | |
1160 | } | |
1161 | } | |
f3ed775e | 1162 | error: |
ae856491 DG |
1163 | if (warn) { |
1164 | ret = CMD_WARNING; | |
1165 | } | |
89476427 JRJ |
1166 | if (error) { |
1167 | ret = CMD_ERROR; | |
1168 | } | |
cd80958d | 1169 | lttng_destroy_handle(handle); |
9f449915 | 1170 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
0c4e727b | 1171 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1172 | |
89476427 JRJ |
1173 | /* Overwrite ret with error_holder if there was an actual error with |
1174 | * enabling an event. | |
1175 | */ | |
1176 | ret = error_holder ? error_holder : ret; | |
1177 | ||
91744e14 | 1178 | lttng_event_destroy(ev); |
f3ed775e DG |
1179 | return ret; |
1180 | } | |
1181 | ||
1182 | /* | |
6181537c | 1183 | * Add event to trace session |
f3ed775e DG |
1184 | */ |
1185 | int cmd_enable_events(int argc, const char **argv) | |
1186 | { | |
89476427 | 1187 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1188 | static poptContext pc; |
cd80958d | 1189 | char *session_name = NULL; |
68c7f6e5 | 1190 | const char *leftover = NULL; |
de044b7a | 1191 | int event_type = -1; |
f3ed775e DG |
1192 | |
1193 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1194 | poptReadDefaultConfig(pc, 0); | |
1195 | ||
1196 | /* Default event type */ | |
7a3d1328 | 1197 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1198 | |
1199 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1200 | switch (opt) { | |
1201 | case OPT_HELP: | |
4ba92f18 | 1202 | SHOW_HELP(); |
f3ed775e | 1203 | goto end; |
f3ed775e | 1204 | case OPT_TRACEPOINT: |
e6ddca71 | 1205 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1206 | break; |
cf0e5467 | 1207 | case OPT_PROBE: |
7d29a247 | 1208 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1209 | break; |
dcabc190 FD |
1210 | case OPT_USERSPACE_PROBE: |
1211 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1212 | break; | |
f3ed775e DG |
1213 | case OPT_FUNCTION: |
1214 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1215 | break; |
a54bd42d MD |
1216 | case OPT_SYSCALL: |
1217 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1218 | break; |
eeac7d46 MD |
1219 | case OPT_USERSPACE: |
1220 | opt_userspace = 1; | |
eeac7d46 | 1221 | break; |
0cda4f28 | 1222 | case OPT_LOGLEVEL: |
8005f29a | 1223 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1224 | opt_loglevel = poptGetOptArg(pc); |
1225 | break; | |
1226 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1227 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1228 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1229 | break; |
679b4943 SM |
1230 | case OPT_LIST_OPTIONS: |
1231 | list_cmd_options(stdout, long_options); | |
679b4943 | 1232 | goto end; |
53a80697 MD |
1233 | case OPT_FILTER: |
1234 | break; | |
fac3366c JI |
1235 | case OPT_EXCLUDE: |
1236 | break; | |
f3ed775e | 1237 | default: |
f3ed775e DG |
1238 | ret = CMD_UNDEFINED; |
1239 | goto end; | |
1240 | } | |
de044b7a DG |
1241 | |
1242 | /* Validate event type. Multiple event type are not supported. */ | |
1243 | if (event_type == -1) { | |
1244 | event_type = opt_event_type; | |
1245 | } else { | |
1246 | if (event_type != opt_event_type) { | |
1247 | ERR("Multiple event type not supported."); | |
1248 | ret = CMD_ERROR; | |
1249 | goto end; | |
1250 | } | |
1251 | } | |
f3ed775e DG |
1252 | } |
1253 | ||
3ecec76a | 1254 | ret = print_missing_or_multiple_domains( |
3533d06b JG |
1255 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1256 | opt_python, | |
1257 | true); | |
3ecec76a PP |
1258 | if (ret) { |
1259 | ret = CMD_ERROR; | |
1260 | goto end; | |
1261 | } | |
1262 | ||
89476427 JRJ |
1263 | /* Mi check */ |
1264 | if (lttng_opt_mi) { | |
1265 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1266 | if (!writer) { | |
1267 | ret = -LTTNG_ERR_NOMEM; | |
1268 | goto end; | |
1269 | } | |
1270 | ||
1271 | /* Open command element */ | |
1272 | ret = mi_lttng_writer_command_open(writer, | |
1273 | mi_lttng_element_command_enable_event); | |
1274 | if (ret) { | |
1275 | ret = CMD_ERROR; | |
1276 | goto end; | |
1277 | } | |
1278 | ||
1279 | /* Open output element */ | |
1280 | ret = mi_lttng_writer_open_element(writer, | |
1281 | mi_lttng_element_command_output); | |
1282 | if (ret) { | |
1283 | ret = CMD_ERROR; | |
1284 | goto end; | |
1285 | } | |
1286 | } | |
1287 | ||
f3ed775e DG |
1288 | opt_event_list = (char*) poptGetArg(pc); |
1289 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1290 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1291 | ret = CMD_ERROR; |
f3ed775e DG |
1292 | goto end; |
1293 | } | |
1294 | ||
68c7f6e5 JD |
1295 | leftover = poptGetArg(pc); |
1296 | if (leftover) { | |
1297 | ERR("Unknown argument: %s", leftover); | |
1298 | ret = CMD_ERROR; | |
1299 | goto end; | |
1300 | } | |
1301 | ||
cd80958d DG |
1302 | if (!opt_session_name) { |
1303 | session_name = get_session_name(); | |
1304 | if (session_name == NULL) { | |
89476427 JRJ |
1305 | command_ret = CMD_ERROR; |
1306 | success = 0; | |
1307 | goto mi_closing; | |
cd80958d DG |
1308 | } |
1309 | } else { | |
1310 | session_name = opt_session_name; | |
1311 | } | |
1312 | ||
89476427 JRJ |
1313 | command_ret = enable_events(session_name); |
1314 | if (command_ret) { | |
1315 | success = 0; | |
1316 | goto mi_closing; | |
1317 | } | |
1318 | ||
1319 | mi_closing: | |
1320 | /* Mi closing */ | |
1321 | if (lttng_opt_mi) { | |
1322 | /* Close output element */ | |
1323 | ret = mi_lttng_writer_close_element(writer); | |
1324 | if (ret) { | |
1325 | ret = CMD_ERROR; | |
1326 | goto end; | |
1327 | } | |
1328 | ||
1329 | ret = mi_lttng_writer_write_element_bool(writer, | |
1330 | mi_lttng_element_command_success, success); | |
1331 | if (ret) { | |
1332 | ret = CMD_ERROR; | |
1333 | goto end; | |
1334 | } | |
1335 | ||
1336 | /* Command element close */ | |
1337 | ret = mi_lttng_writer_command_close(writer); | |
1338 | if (ret) { | |
1339 | ret = CMD_ERROR; | |
1340 | goto end; | |
1341 | } | |
1342 | } | |
f3ed775e DG |
1343 | |
1344 | end: | |
89476427 JRJ |
1345 | /* Mi clean-up */ |
1346 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1347 | /* Preserve original error code */ | |
1348 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1349 | } | |
1350 | ||
cd80958d DG |
1351 | if (opt_session_name == NULL) { |
1352 | free(session_name); | |
1353 | } | |
1354 | ||
89476427 JRJ |
1355 | /* Overwrite ret if an error occurred in enable_events */ |
1356 | ret = command_ret ? command_ret : ret; | |
1357 | ||
ca1c3607 | 1358 | poptFreeContext(pc); |
f3ed775e DG |
1359 | return ret; |
1360 | } | |
9f449915 | 1361 |