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 | ||
4624dad0 SM |
326 | /* |
327 | * FIXME: find a good place to declare this since add trigger also uses it | |
328 | */ | |
329 | LTTNG_HIDDEN | |
330 | int create_exclusion_list_and_validate(const char *event_name, | |
331 | const char *exclusions_arg, | |
332 | char ***exclusion_list); | |
333 | ||
334 | ||
335 | LTTNG_HIDDEN | |
9f449915 PP |
336 | int create_exclusion_list_and_validate(const char *event_name, |
337 | const char *exclusions_arg, | |
338 | char ***exclusion_list) | |
339 | { | |
340 | int ret = 0; | |
341 | char **exclusions = NULL; | |
342 | ||
343 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
344 | if (!strutils_is_star_glob_pattern(event_name)) { | |
345 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
346 | event_name); | |
347 | goto error; | |
348 | } | |
349 | ||
350 | /* Split exclusions. */ | |
351 | exclusions = strutils_split(exclusions_arg, ',', true); | |
352 | if (!exclusions) { | |
353 | goto error; | |
354 | } | |
355 | ||
356 | /* | |
357 | * If the event name is a star-at-end only globbing pattern, | |
358 | * then we can validate the individual exclusions. Otherwise | |
359 | * all exclusions are passed to the session daemon. | |
360 | */ | |
361 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
362 | char * const *exclusion; | |
363 | ||
364 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
365 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
366 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 367 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 368 | if (ret) { |
5ef79758 MD |
369 | goto error; |
370 | } | |
748bde76 | 371 | } |
748bde76 JI |
372 | } |
373 | } | |
9f449915 PP |
374 | |
375 | *exclusion_list = exclusions; | |
376 | ||
748bde76 | 377 | goto end; |
9f449915 | 378 | |
748bde76 | 379 | error: |
9f449915 PP |
380 | ret = -1; |
381 | strutils_free_null_terminated_array_of_strings(exclusions); | |
382 | ||
748bde76 | 383 | end: |
748bde76 JI |
384 | return ret; |
385 | } | |
502bbe89 | 386 | |
9f449915 PP |
387 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
388 | int *warn) | |
502bbe89 | 389 | { |
9f449915 | 390 | char * const *exclusion; |
502bbe89 | 391 | |
9f449915 PP |
392 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
393 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 394 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 395 | *exclusion); |
502bbe89 PP |
396 | *warn = 1; |
397 | } | |
398 | } | |
399 | } | |
400 | ||
f3ed775e | 401 | /* |
6181537c | 402 | * Enabling event using the lttng API. |
89476427 | 403 | * Note: in case of error only the last error code will be return. |
f3ed775e | 404 | */ |
cd80958d | 405 | static int enable_events(char *session_name) |
f3ed775e | 406 | { |
89476427 JRJ |
407 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
408 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 409 | char *event_name, *channel_name = NULL; |
91744e14 | 410 | struct lttng_event *ev; |
7d29a247 | 411 | struct lttng_domain dom; |
7ed70bc9 | 412 | char **exclusion_list = NULL; |
0c4e727b | 413 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 414 | |
441c16a7 MD |
415 | memset(&dom, 0, sizeof(dom)); |
416 | ||
91744e14 FD |
417 | ev = lttng_event_create(); |
418 | if (!ev) { | |
419 | ret = CMD_ERROR; | |
420 | goto error; | |
421 | } | |
422 | ||
53a80697 | 423 | if (opt_kernel) { |
67b58630 JG |
424 | if (opt_loglevel) { |
425 | WARN("Kernel loglevels are not supported."); | |
426 | } | |
53a80697 MD |
427 | } |
428 | ||
7d29a247 DG |
429 | /* Create lttng domain */ |
430 | if (opt_kernel) { | |
431 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 432 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 433 | } else if (opt_userspace) { |
2bdd86d4 | 434 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 435 | /* Default. */ |
8692d4e5 | 436 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
437 | } else if (opt_jul) { |
438 | dom.type = LTTNG_DOMAIN_JUL; | |
439 | /* Default. */ | |
440 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
441 | } else if (opt_log4j) { |
442 | dom.type = LTTNG_DOMAIN_LOG4J; | |
443 | /* Default. */ | |
444 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
445 | } else if (opt_python) { |
446 | dom.type = LTTNG_DOMAIN_PYTHON; | |
447 | /* Default. */ | |
448 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 449 | } else { |
3ecec76a PP |
450 | /* Checked by the caller. */ |
451 | assert(0); | |
2bdd86d4 | 452 | } |
7d29a247 | 453 | |
8b08c525 AB |
454 | if (opt_exclude) { |
455 | switch (dom.type) { | |
456 | case LTTNG_DOMAIN_KERNEL: | |
457 | case LTTNG_DOMAIN_JUL: | |
458 | case LTTNG_DOMAIN_LOG4J: | |
459 | case LTTNG_DOMAIN_PYTHON: | |
460 | ERR("Event name exclusions are not yet implemented for %s events", | |
461 | get_domain_str(dom.type)); | |
462 | ret = CMD_ERROR; | |
463 | goto error; | |
464 | case LTTNG_DOMAIN_UST: | |
465 | /* Exclusions supported */ | |
466 | break; | |
467 | default: | |
468 | assert(0); | |
469 | } | |
d5dd17fd JI |
470 | } |
471 | ||
4fd2697f FD |
472 | /* |
473 | * Adding a filter to a probe, function or userspace-probe would be | |
474 | * denied by the kernel tracer as it's not supported at the moment. We | |
475 | * do an early check here to warn the user. | |
476 | */ | |
477 | if (opt_filter && opt_kernel) { | |
478 | switch (opt_event_type) { | |
479 | case LTTNG_EVENT_ALL: | |
480 | case LTTNG_EVENT_TRACEPOINT: | |
481 | case LTTNG_EVENT_SYSCALL: | |
482 | break; | |
483 | case LTTNG_EVENT_PROBE: | |
484 | case LTTNG_EVENT_USERSPACE_PROBE: | |
485 | case LTTNG_EVENT_FUNCTION: | |
486 | ERR("Filter expressions are not supported for %s events", | |
487 | get_event_type_str(opt_event_type)); | |
488 | ret = CMD_ERROR; | |
489 | goto error; | |
490 | default: | |
491 | ret = CMD_UNDEFINED; | |
492 | goto error; | |
493 | } | |
494 | } | |
495 | ||
85076754 | 496 | channel_name = opt_channel_name; |
ae856491 | 497 | |
cd80958d DG |
498 | handle = lttng_create_handle(session_name, &dom); |
499 | if (handle == NULL) { | |
500 | ret = -1; | |
501 | goto error; | |
502 | } | |
1aef21b6 | 503 | |
89476427 JRJ |
504 | /* Prepare Mi */ |
505 | if (lttng_opt_mi) { | |
506 | /* Open a events element */ | |
507 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
508 | if (ret) { | |
509 | ret = CMD_ERROR; | |
510 | goto error; | |
511 | } | |
512 | } | |
513 | ||
cd80958d | 514 | if (opt_enable_all) { |
8c9ae521 | 515 | /* Default setup for enable all */ |
75e8c5ab | 516 | if (opt_kernel) { |
91744e14 FD |
517 | ev->type = opt_event_type; |
518 | strcpy(ev->name, "*"); | |
300b8fd5 | 519 | /* kernel loglevels not implemented */ |
91744e14 | 520 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 521 | } else { |
91744e14 FD |
522 | ev->type = LTTNG_EVENT_TRACEPOINT; |
523 | strcpy(ev->name, "*"); | |
524 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 525 | if (opt_loglevel) { |
7e8f2e9c JG |
526 | int name_search_ret; |
527 | ||
0e115563 | 528 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 529 | |
b2064f54 | 530 | if (opt_userspace) { |
7e8f2e9c JG |
531 | enum lttng_loglevel loglevel; |
532 | ||
533 | name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
534 | ev->loglevel = (int) loglevel; | |
b2064f54 | 535 | } else if (opt_jul) { |
7e8f2e9c JG |
536 | enum lttng_loglevel_jul loglevel; |
537 | ||
538 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
539 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 540 | } else if (opt_log4j) { |
7e8f2e9c JG |
541 | enum lttng_loglevel_log4j loglevel; |
542 | ||
543 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
544 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
545 | } else { |
546 | /* python domain. */ | |
7e8f2e9c JG |
547 | enum lttng_loglevel_python loglevel; |
548 | ||
549 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
550 | ev->loglevel = (int) loglevel; | |
b2064f54 | 551 | } |
7e8f2e9c JG |
552 | |
553 | if (name_search_ret == -1) { | |
300b8fd5 | 554 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 555 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
556 | goto error; |
557 | } | |
22e25b71 | 558 | } else { |
0e115563 | 559 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 560 | if (opt_userspace) { |
91744e14 | 561 | ev->loglevel = -1; |
34aa3685 | 562 | } else if (opt_jul) { |
91744e14 | 563 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 564 | } else if (opt_log4j) { |
91744e14 | 565 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 566 | } else if (opt_python) { |
91744e14 | 567 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 568 | } |
300b8fd5 | 569 | } |
75e8c5ab | 570 | } |
8c9ae521 | 571 | |
7ed70bc9 | 572 | if (opt_exclude) { |
9f449915 PP |
573 | ret = create_exclusion_list_and_validate("*", |
574 | opt_exclude, &exclusion_list); | |
575 | if (ret) { | |
576 | ret = CMD_ERROR; | |
7ed70bc9 JI |
577 | goto error; |
578 | } | |
502bbe89 | 579 | |
91744e14 | 580 | ev->exclusion = 1; |
502bbe89 | 581 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 582 | &warn); |
7ed70bc9 | 583 | } |
025faf73 | 584 | if (!opt_filter) { |
7ed70bc9 | 585 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 586 | ev, channel_name, |
7ed70bc9 | 587 | NULL, |
9f449915 PP |
588 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
589 | exclusion_list); | |
025faf73 DG |
590 | if (ret < 0) { |
591 | switch (-ret) { | |
592 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
593 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 594 | print_channel_name(channel_name), session_name); |
89476427 | 595 | warn = 1; |
025faf73 | 596 | break; |
45d5d421 CB |
597 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
598 | { | |
599 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
600 | ERR("Events: %s (channel %s, session %s)", | |
601 | msg, | |
602 | print_channel_name(channel_name), | |
603 | session_name); | |
604 | error = 1; | |
605 | break; | |
606 | } | |
025faf73 DG |
607 | default: |
608 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
609 | lttng_strerror(ret), |
610 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
611 | ? print_raw_channel_name(channel_name) | |
612 | : print_channel_name(channel_name), | |
613 | session_name); | |
89476427 | 614 | error = 1; |
025faf73 DG |
615 | break; |
616 | } | |
617 | goto end; | |
42224349 | 618 | } |
8c9ae521 | 619 | |
025faf73 DG |
620 | switch (opt_event_type) { |
621 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 622 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 623 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
624 | |
625 | if (!exclusion_string) { | |
626 | PERROR("Cannot allocate exclusion_string"); | |
627 | error = 1; | |
628 | goto end; | |
629 | } | |
9c48cab3 | 630 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 631 | get_domain_str(dom.type), |
9c48cab3 | 632 | exclusion_string, |
85076754 | 633 | print_channel_name(channel_name), |
025faf73 | 634 | opt_loglevel); |
9c48cab3 | 635 | free(exclusion_string); |
025faf73 | 636 | } else { |
9f449915 | 637 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
638 | |
639 | if (!exclusion_string) { | |
640 | PERROR("Cannot allocate exclusion_string"); | |
641 | error = 1; | |
642 | goto end; | |
643 | } | |
9c48cab3 | 644 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 645 | get_domain_str(dom.type), |
9c48cab3 | 646 | exclusion_string, |
85076754 | 647 | print_channel_name(channel_name)); |
9c48cab3 | 648 | free(exclusion_string); |
025faf73 DG |
649 | } |
650 | break; | |
651 | case LTTNG_EVENT_SYSCALL: | |
652 | if (opt_kernel) { | |
6e911cad MD |
653 | MSG("All %s system calls are enabled in channel %s", |
654 | get_domain_str(dom.type), | |
85076754 | 655 | print_channel_name(channel_name)); |
025faf73 DG |
656 | } |
657 | break; | |
658 | case LTTNG_EVENT_ALL: | |
67b58630 | 659 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 660 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
661 | |
662 | if (!exclusion_string) { | |
663 | PERROR("Cannot allocate exclusion_string"); | |
664 | error = 1; | |
665 | goto end; | |
666 | } | |
9c48cab3 | 667 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 668 | get_domain_str(dom.type), |
9c48cab3 | 669 | exclusion_string, |
85076754 | 670 | print_channel_name(channel_name), |
025faf73 | 671 | opt_loglevel); |
9c48cab3 | 672 | free(exclusion_string); |
025faf73 | 673 | } else { |
9f449915 | 674 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
675 | |
676 | if (!exclusion_string) { | |
677 | PERROR("Cannot allocate exclusion_string"); | |
678 | error = 1; | |
679 | goto end; | |
680 | } | |
9c48cab3 | 681 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 682 | get_domain_str(dom.type), |
9c48cab3 | 683 | exclusion_string, |
85076754 | 684 | print_channel_name(channel_name)); |
9c48cab3 | 685 | free(exclusion_string); |
025faf73 DG |
686 | } |
687 | break; | |
688 | default: | |
689 | /* | |
690 | * We should not be here since lttng_enable_event should have | |
691 | * failed on the event type. | |
692 | */ | |
693 | goto error; | |
57064ada | 694 | } |
f3ed775e | 695 | } |
89476427 | 696 | |
025faf73 | 697 | if (opt_filter) { |
91744e14 | 698 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
699 | opt_filter, |
700 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
701 | exclusion_list); | |
89476427 JRJ |
702 | if (command_ret < 0) { |
703 | switch (-command_ret) { | |
16363652 | 704 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 705 | WARN("Filter on all events is already enabled" |
16363652 | 706 | " (channel %s, session %s)", |
85076754 | 707 | print_channel_name(channel_name), session_name); |
89476427 | 708 | warn = 1; |
16363652 | 709 | break; |
45d5d421 CB |
710 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
711 | { | |
712 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
713 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
714 | msg, | |
715 | print_channel_name(channel_name), | |
716 | session_name, opt_filter); | |
717 | error = 1; | |
718 | break; | |
719 | } | |
16363652 | 720 | default: |
85076754 | 721 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
722 | lttng_strerror(command_ret), |
723 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
724 | ? print_raw_channel_name(channel_name) |
725 | : print_channel_name(channel_name), | |
726 | session_name, opt_filter); | |
89476427 | 727 | error = 1; |
16363652 DG |
728 | break; |
729 | } | |
89476427 | 730 | error_holder = command_ret; |
16363652 | 731 | } else { |
91744e14 | 732 | ev->filter = 1; |
16363652 DG |
733 | MSG("Filter '%s' successfully set", opt_filter); |
734 | } | |
735 | } | |
89476427 JRJ |
736 | |
737 | if (lttng_opt_mi) { | |
738 | /* The wildcard * is used for kernel and ust domain to | |
739 | * represent ALL. We copy * in event name to force the wildcard use | |
740 | * for kernel domain | |
741 | * | |
742 | * Note: this is strictly for semantic and printing while in | |
743 | * machine interface mode. | |
744 | */ | |
91744e14 | 745 | strcpy(ev->name, "*"); |
89476427 JRJ |
746 | |
747 | /* If we reach here the events are enabled */ | |
748 | if (!error && !warn) { | |
91744e14 | 749 | ev->enabled = 1; |
89476427 | 750 | } else { |
91744e14 | 751 | ev->enabled = 0; |
89476427 JRJ |
752 | success = 0; |
753 | } | |
91744e14 | 754 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
755 | if (ret) { |
756 | ret = CMD_ERROR; | |
757 | goto error; | |
758 | } | |
759 | ||
760 | /* print exclusion */ | |
9f449915 | 761 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
762 | if (ret) { |
763 | ret = CMD_ERROR; | |
764 | goto error; | |
765 | } | |
766 | ||
767 | /* Success ? */ | |
768 | ret = mi_lttng_writer_write_element_bool(writer, | |
769 | mi_lttng_element_command_success, success); | |
770 | if (ret) { | |
771 | ret = CMD_ERROR; | |
772 | goto error; | |
773 | } | |
774 | ||
775 | /* Close event element */ | |
776 | ret = mi_lttng_writer_close_element(writer); | |
777 | if (ret) { | |
778 | ret = CMD_ERROR; | |
779 | goto error; | |
780 | } | |
781 | } | |
782 | ||
8c9ae521 | 783 | goto end; |
f3ed775e DG |
784 | } |
785 | ||
786 | /* Strip event list */ | |
787 | event_name = strtok(opt_event_list, ","); | |
788 | while (event_name != NULL) { | |
6181537c | 789 | /* Copy name and type of the event */ |
91744e14 FD |
790 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
791 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
792 | ev->type = opt_event_type; | |
6181537c | 793 | |
f3ed775e DG |
794 | /* Kernel tracer action */ |
795 | if (opt_kernel) { | |
796 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
797 | event_name, |
798 | print_channel_name(channel_name)); | |
f3ed775e DG |
799 | |
800 | switch (opt_event_type) { | |
29c62722 MD |
801 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
802 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
803 | if (strcmp(ev->name, "*")) { |
804 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
805 | } |
806 | break; | |
e6ddca71 | 807 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 808 | break; |
7d29a247 | 809 | case LTTNG_EVENT_PROBE: |
91744e14 | 810 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 811 | if (ret) { |
cf0e5467 | 812 | ERR("Unable to parse probe options"); |
91744e14 | 813 | ret = CMD_ERROR; |
0d63dd19 DG |
814 | goto error; |
815 | } | |
f3ed775e | 816 | break; |
dcabc190 | 817 | case LTTNG_EVENT_USERSPACE_PROBE: |
0c4e727b JR |
818 | assert(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
819 | ||
820 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 821 | if (ret) { |
36aa2f64 FD |
822 | switch (ret) { |
823 | case CMD_UNSUPPORTED: | |
824 | /* | |
825 | * Error message describing | |
826 | * what is not supported was | |
827 | * printed in the function. | |
828 | */ | |
829 | break; | |
830 | case CMD_ERROR: | |
831 | default: | |
832 | ERR("Unable to parse userspace probe options"); | |
833 | break; | |
834 | } | |
dcabc190 FD |
835 | goto error; |
836 | } | |
0c4e727b JR |
837 | |
838 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
839 | if (ret) { | |
840 | WARN("Failed to set probe location on event"); | |
841 | ret = CMD_ERROR; | |
842 | goto error; | |
843 | } | |
844 | ||
845 | /* Ownership of the uprobe location was transferred to the event. */ | |
846 | uprobe_loc = NULL; | |
dcabc190 | 847 | break; |
f3ed775e | 848 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 849 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 850 | if (ret) { |
8f0d098b | 851 | ERR("Unable to parse function probe options"); |
91744e14 | 852 | ret = CMD_ERROR; |
8f0d098b MD |
853 | goto error; |
854 | } | |
855 | break; | |
a54bd42d | 856 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 857 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 858 | break; |
f3ed775e | 859 | default: |
1ab1ea0b | 860 | ret = CMD_UNDEFINED; |
f3ed775e DG |
861 | goto error; |
862 | } | |
0cda4f28 | 863 | |
0cda4f28 | 864 | /* kernel loglevels not implemented */ |
91744e14 | 865 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 866 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 867 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 868 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
869 | |
870 | switch (opt_event_type) { | |
871 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
872 | /* Fall-through */ |
873 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 874 | /* Copy name and type of the event */ |
91744e14 FD |
875 | ev->type = LTTNG_EVENT_TRACEPOINT; |
876 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
877 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
878 | break; |
879 | case LTTNG_EVENT_PROBE: | |
880 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 881 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 882 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 883 | default: |
cc62c0c0 | 884 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 885 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
886 | goto error; |
887 | } | |
0cda4f28 | 888 | |
7ed70bc9 | 889 | if (opt_exclude) { |
91744e14 | 890 | ev->exclusion = 1; |
d5dd17fd JI |
891 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
892 | ERR("Exclusion option can only be used with tracepoint events"); | |
893 | ret = CMD_ERROR; | |
894 | goto error; | |
895 | } | |
7ed70bc9 | 896 | /* Free previously allocated items */ |
9f449915 PP |
897 | strutils_free_null_terminated_array_of_strings( |
898 | exclusion_list); | |
899 | exclusion_list = NULL; | |
900 | ret = create_exclusion_list_and_validate( | |
901 | event_name, opt_exclude, | |
902 | &exclusion_list); | |
903 | if (ret) { | |
904 | ret = CMD_ERROR; | |
7ed70bc9 JI |
905 | goto error; |
906 | } | |
502bbe89 PP |
907 | |
908 | warn_on_truncated_exclusion_names( | |
9f449915 | 909 | exclusion_list, &warn); |
7ed70bc9 JI |
910 | } |
911 | ||
91744e14 | 912 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 913 | if (opt_loglevel) { |
7e8f2e9c JG |
914 | enum lttng_loglevel loglevel; |
915 | const int name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
916 | ||
917 | if (name_search_ret == -1) { | |
8005f29a | 918 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 919 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
920 | goto error; |
921 | } | |
7e8f2e9c JG |
922 | |
923 | ev->loglevel = (int) loglevel; | |
22e25b71 | 924 | } else { |
91744e14 | 925 | ev->loglevel = -1; |
ed7f4083 | 926 | } |
0e115563 | 927 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
928 | if (opt_event_type != LTTNG_EVENT_ALL && |
929 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 930 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
931 | ret = CMD_UNSUPPORTED; |
932 | goto error; | |
933 | } | |
b2064f54 | 934 | |
91744e14 | 935 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 936 | if (opt_loglevel) { |
7e8f2e9c JG |
937 | int name_search_ret; |
938 | ||
5cdb6027 | 939 | if (opt_jul) { |
7e8f2e9c JG |
940 | enum lttng_loglevel_jul loglevel; |
941 | ||
942 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
943 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 944 | } else if (opt_log4j) { |
7e8f2e9c JG |
945 | enum lttng_loglevel_log4j loglevel; |
946 | ||
947 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
948 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
949 | } else { |
950 | /* python domain. */ | |
7e8f2e9c JG |
951 | enum lttng_loglevel_python loglevel; |
952 | ||
953 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
954 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 955 | } |
7e8f2e9c JG |
956 | |
957 | if (name_search_ret) { | |
b2064f54 DG |
958 | ERR("Unknown loglevel %s", opt_loglevel); |
959 | ret = -LTTNG_ERR_INVALID; | |
960 | goto error; | |
961 | } | |
962 | } else { | |
5cdb6027 | 963 | if (opt_jul) { |
91744e14 | 964 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 965 | } else if (opt_log4j) { |
91744e14 | 966 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 967 | } else if (opt_python) { |
91744e14 | 968 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 969 | } |
b2064f54 | 970 | } |
91744e14 FD |
971 | ev->type = LTTNG_EVENT_TRACEPOINT; |
972 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
973 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 974 | } else { |
3ecec76a | 975 | assert(0); |
f3ed775e DG |
976 | } |
977 | ||
025faf73 | 978 | if (!opt_filter) { |
9c48cab3 JI |
979 | char *exclusion_string; |
980 | ||
89476427 | 981 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 982 | ev, channel_name, |
9f449915 PP |
983 | NULL, |
984 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
985 | exclusion_list); | |
986 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
987 | if (!exclusion_string) { |
988 | PERROR("Cannot allocate exclusion_string"); | |
989 | error = 1; | |
990 | goto end; | |
991 | } | |
89476427 | 992 | if (command_ret < 0) { |
025faf73 | 993 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 994 | switch (-command_ret) { |
025faf73 | 995 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 996 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 997 | event_name, |
9c48cab3 | 998 | exclusion_string, |
85076754 | 999 | print_channel_name(channel_name), session_name); |
89476427 | 1000 | warn = 1; |
025faf73 | 1001 | break; |
45d5d421 CB |
1002 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1003 | { | |
1004 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1005 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1006 | exclusion_string, | |
1007 | msg, | |
1008 | print_channel_name(channel_name), | |
1009 | session_name); | |
1010 | error = 1; | |
1011 | break; | |
1012 | } | |
dcabc190 FD |
1013 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1014 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1015 | event_name, print_channel_name(channel_name), | |
1016 | session_name); | |
1017 | error = 1; | |
1018 | break; | |
025faf73 | 1019 | default: |
9c48cab3 JI |
1020 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1021 | exclusion_string, | |
da3d7d0e JRJ |
1022 | lttng_strerror(command_ret), |
1023 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1024 | ? print_raw_channel_name(channel_name) |
1025 | : print_channel_name(channel_name), | |
1026 | session_name); | |
89476427 | 1027 | error = 1; |
025faf73 DG |
1028 | break; |
1029 | } | |
89476427 | 1030 | error_holder = command_ret; |
025faf73 | 1031 | } else { |
8274eeba AB |
1032 | switch (dom.type) { |
1033 | case LTTNG_DOMAIN_KERNEL: | |
1034 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1035 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1036 | get_domain_str(dom.type), |
1037 | event_name, | |
1038 | exclusion_string, | |
1039 | print_channel_name(channel_name)); | |
1040 | break; | |
1041 | case LTTNG_DOMAIN_JUL: | |
1042 | case LTTNG_DOMAIN_LOG4J: | |
1043 | case LTTNG_DOMAIN_PYTHON: | |
1044 | /* | |
1045 | * Don't print the default channel | |
1046 | * name for agent domains. | |
1047 | */ | |
895707da | 1048 | MSG("%s event %s%s enabled", |
8274eeba AB |
1049 | get_domain_str(dom.type), |
1050 | event_name, | |
1051 | exclusion_string); | |
1052 | break; | |
1053 | default: | |
1054 | assert(0); | |
49ceaa70 | 1055 | } |
42224349 | 1056 | } |
9c48cab3 | 1057 | free(exclusion_string); |
6181537c | 1058 | } |
025faf73 DG |
1059 | |
1060 | if (opt_filter) { | |
9c48cab3 JI |
1061 | char *exclusion_string; |
1062 | ||
89476427 | 1063 | /* Filter present */ |
91744e14 | 1064 | ev->filter = 1; |
89476427 | 1065 | |
91744e14 | 1066 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1067 | opt_filter, |
1068 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1069 | exclusion_list); | |
1070 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1071 | if (!exclusion_string) { |
1072 | PERROR("Cannot allocate exclusion_string"); | |
1073 | error = 1; | |
1074 | goto end; | |
1075 | } | |
89476427 JRJ |
1076 | if (command_ret < 0) { |
1077 | switch (-command_ret) { | |
7671f53c | 1078 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1079 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1080 | " (channel %s, session %s)", |
85076754 | 1081 | event_name, |
9c48cab3 | 1082 | exclusion_string, |
85076754 | 1083 | print_channel_name(channel_name), session_name); |
89476427 | 1084 | warn = 1; |
7671f53c | 1085 | break; |
45d5d421 CB |
1086 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1087 | { | |
1088 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1089 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1090 | exclusion_string, |
1091 | msg, | |
1092 | print_channel_name(channel_name), | |
1093 | session_name, opt_filter); | |
1094 | error = 1; | |
1095 | break; | |
1096 | } | |
7671f53c | 1097 | default: |
91744e14 | 1098 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1099 | exclusion_string, |
da3d7d0e JRJ |
1100 | lttng_strerror(command_ret), |
1101 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1102 | ? print_raw_channel_name(channel_name) |
1103 | : print_channel_name(channel_name), | |
1104 | session_name, opt_filter); | |
89476427 | 1105 | error = 1; |
7671f53c CB |
1106 | break; |
1107 | } | |
89476427 JRJ |
1108 | error_holder = command_ret; |
1109 | ||
16363652 | 1110 | } else { |
9c48cab3 JI |
1111 | MSG("Event %s%s: Filter '%s' successfully set", |
1112 | event_name, exclusion_string, | |
1113 | opt_filter); | |
53a80697 | 1114 | } |
9c48cab3 | 1115 | free(exclusion_string); |
53a80697 | 1116 | } |
6181537c | 1117 | |
89476427 JRJ |
1118 | if (lttng_opt_mi) { |
1119 | if (command_ret) { | |
1120 | success = 0; | |
91744e14 | 1121 | ev->enabled = 0; |
89476427 | 1122 | } else { |
91744e14 | 1123 | ev->enabled = 1; |
89476427 JRJ |
1124 | } |
1125 | ||
91744e14 | 1126 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1127 | if (ret) { |
1128 | ret = CMD_ERROR; | |
1129 | goto error; | |
1130 | } | |
1131 | ||
1132 | /* print exclusion */ | |
9f449915 | 1133 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1134 | if (ret) { |
1135 | ret = CMD_ERROR; | |
1136 | goto error; | |
1137 | } | |
1138 | ||
1139 | /* Success ? */ | |
1140 | ret = mi_lttng_writer_write_element_bool(writer, | |
1141 | mi_lttng_element_command_success, success); | |
1142 | if (ret) { | |
1143 | ret = CMD_ERROR; | |
1144 | goto end; | |
1145 | } | |
1146 | ||
1147 | /* Close event element */ | |
1148 | ret = mi_lttng_writer_close_element(writer); | |
1149 | if (ret) { | |
1150 | ret = CMD_ERROR; | |
1151 | goto end; | |
1152 | } | |
1153 | } | |
1154 | ||
f3ed775e DG |
1155 | /* Next event */ |
1156 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1157 | /* Reset warn, error and success */ |
1158 | success = 1; | |
f3ed775e DG |
1159 | } |
1160 | ||
8c9ae521 | 1161 | end: |
89476427 JRJ |
1162 | /* Close Mi */ |
1163 | if (lttng_opt_mi) { | |
1164 | /* Close events element */ | |
1165 | ret = mi_lttng_writer_close_element(writer); | |
1166 | if (ret) { | |
1167 | ret = CMD_ERROR; | |
1168 | goto error; | |
1169 | } | |
1170 | } | |
f3ed775e | 1171 | error: |
ae856491 DG |
1172 | if (warn) { |
1173 | ret = CMD_WARNING; | |
1174 | } | |
89476427 JRJ |
1175 | if (error) { |
1176 | ret = CMD_ERROR; | |
1177 | } | |
cd80958d | 1178 | lttng_destroy_handle(handle); |
9f449915 | 1179 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
0c4e727b | 1180 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1181 | |
89476427 JRJ |
1182 | /* Overwrite ret with error_holder if there was an actual error with |
1183 | * enabling an event. | |
1184 | */ | |
1185 | ret = error_holder ? error_holder : ret; | |
1186 | ||
91744e14 | 1187 | lttng_event_destroy(ev); |
f3ed775e DG |
1188 | return ret; |
1189 | } | |
1190 | ||
1191 | /* | |
6181537c | 1192 | * Add event to trace session |
f3ed775e DG |
1193 | */ |
1194 | int cmd_enable_events(int argc, const char **argv) | |
1195 | { | |
89476427 | 1196 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1197 | static poptContext pc; |
cd80958d | 1198 | char *session_name = NULL; |
68c7f6e5 | 1199 | const char *leftover = NULL; |
de044b7a | 1200 | int event_type = -1; |
f3ed775e DG |
1201 | |
1202 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1203 | poptReadDefaultConfig(pc, 0); | |
1204 | ||
1205 | /* Default event type */ | |
7a3d1328 | 1206 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1207 | |
1208 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1209 | switch (opt) { | |
1210 | case OPT_HELP: | |
4ba92f18 | 1211 | SHOW_HELP(); |
f3ed775e | 1212 | goto end; |
f3ed775e | 1213 | case OPT_TRACEPOINT: |
e6ddca71 | 1214 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1215 | break; |
cf0e5467 | 1216 | case OPT_PROBE: |
7d29a247 | 1217 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1218 | break; |
dcabc190 FD |
1219 | case OPT_USERSPACE_PROBE: |
1220 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1221 | break; | |
f3ed775e DG |
1222 | case OPT_FUNCTION: |
1223 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1224 | break; |
a54bd42d MD |
1225 | case OPT_SYSCALL: |
1226 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1227 | break; |
eeac7d46 MD |
1228 | case OPT_USERSPACE: |
1229 | opt_userspace = 1; | |
eeac7d46 | 1230 | break; |
0cda4f28 | 1231 | case OPT_LOGLEVEL: |
8005f29a | 1232 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1233 | opt_loglevel = poptGetOptArg(pc); |
1234 | break; | |
1235 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1236 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1237 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1238 | break; |
679b4943 SM |
1239 | case OPT_LIST_OPTIONS: |
1240 | list_cmd_options(stdout, long_options); | |
679b4943 | 1241 | goto end; |
53a80697 MD |
1242 | case OPT_FILTER: |
1243 | break; | |
fac3366c JI |
1244 | case OPT_EXCLUDE: |
1245 | break; | |
f3ed775e | 1246 | default: |
f3ed775e DG |
1247 | ret = CMD_UNDEFINED; |
1248 | goto end; | |
1249 | } | |
de044b7a DG |
1250 | |
1251 | /* Validate event type. Multiple event type are not supported. */ | |
1252 | if (event_type == -1) { | |
1253 | event_type = opt_event_type; | |
1254 | } else { | |
1255 | if (event_type != opt_event_type) { | |
1256 | ERR("Multiple event type not supported."); | |
1257 | ret = CMD_ERROR; | |
1258 | goto end; | |
1259 | } | |
1260 | } | |
f3ed775e DG |
1261 | } |
1262 | ||
3ecec76a | 1263 | ret = print_missing_or_multiple_domains( |
3533d06b JG |
1264 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1265 | opt_python, | |
1266 | true); | |
3ecec76a PP |
1267 | if (ret) { |
1268 | ret = CMD_ERROR; | |
1269 | goto end; | |
1270 | } | |
1271 | ||
89476427 JRJ |
1272 | /* Mi check */ |
1273 | if (lttng_opt_mi) { | |
1274 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1275 | if (!writer) { | |
1276 | ret = -LTTNG_ERR_NOMEM; | |
1277 | goto end; | |
1278 | } | |
1279 | ||
1280 | /* Open command element */ | |
1281 | ret = mi_lttng_writer_command_open(writer, | |
1282 | mi_lttng_element_command_enable_event); | |
1283 | if (ret) { | |
1284 | ret = CMD_ERROR; | |
1285 | goto end; | |
1286 | } | |
1287 | ||
1288 | /* Open output element */ | |
1289 | ret = mi_lttng_writer_open_element(writer, | |
1290 | mi_lttng_element_command_output); | |
1291 | if (ret) { | |
1292 | ret = CMD_ERROR; | |
1293 | goto end; | |
1294 | } | |
1295 | } | |
1296 | ||
f3ed775e DG |
1297 | opt_event_list = (char*) poptGetArg(pc); |
1298 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1299 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1300 | ret = CMD_ERROR; |
f3ed775e DG |
1301 | goto end; |
1302 | } | |
1303 | ||
68c7f6e5 JD |
1304 | leftover = poptGetArg(pc); |
1305 | if (leftover) { | |
1306 | ERR("Unknown argument: %s", leftover); | |
1307 | ret = CMD_ERROR; | |
1308 | goto end; | |
1309 | } | |
1310 | ||
cd80958d DG |
1311 | if (!opt_session_name) { |
1312 | session_name = get_session_name(); | |
1313 | if (session_name == NULL) { | |
89476427 JRJ |
1314 | command_ret = CMD_ERROR; |
1315 | success = 0; | |
1316 | goto mi_closing; | |
cd80958d DG |
1317 | } |
1318 | } else { | |
1319 | session_name = opt_session_name; | |
1320 | } | |
1321 | ||
89476427 JRJ |
1322 | command_ret = enable_events(session_name); |
1323 | if (command_ret) { | |
1324 | success = 0; | |
1325 | goto mi_closing; | |
1326 | } | |
1327 | ||
1328 | mi_closing: | |
1329 | /* Mi closing */ | |
1330 | if (lttng_opt_mi) { | |
1331 | /* Close output element */ | |
1332 | ret = mi_lttng_writer_close_element(writer); | |
1333 | if (ret) { | |
1334 | ret = CMD_ERROR; | |
1335 | goto end; | |
1336 | } | |
1337 | ||
1338 | ret = mi_lttng_writer_write_element_bool(writer, | |
1339 | mi_lttng_element_command_success, success); | |
1340 | if (ret) { | |
1341 | ret = CMD_ERROR; | |
1342 | goto end; | |
1343 | } | |
1344 | ||
1345 | /* Command element close */ | |
1346 | ret = mi_lttng_writer_command_close(writer); | |
1347 | if (ret) { | |
1348 | ret = CMD_ERROR; | |
1349 | goto end; | |
1350 | } | |
1351 | } | |
f3ed775e DG |
1352 | |
1353 | end: | |
89476427 JRJ |
1354 | /* Mi clean-up */ |
1355 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1356 | /* Preserve original error code */ | |
1357 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1358 | } | |
1359 | ||
cd80958d DG |
1360 | if (opt_session_name == NULL) { |
1361 | free(session_name); | |
1362 | } | |
1363 | ||
89476427 JRJ |
1364 | /* Overwrite ret if an error occurred in enable_events */ |
1365 | ret = command_ret ? command_ret : ret; | |
1366 | ||
ca1c3607 | 1367 | poptFreeContext(pc); |
f3ed775e DG |
1368 | return ret; |
1369 | } | |
9f449915 | 1370 |