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 | |
b03a81fb SM |
330 | int validate_exclusion_list( |
331 | const char *event_name, const char *const *exclusions); | |
4624dad0 SM |
332 | |
333 | LTTNG_HIDDEN | |
b03a81fb SM |
334 | int validate_exclusion_list( |
335 | const char *event_name, const char *const *exclusions) | |
9f449915 | 336 | { |
b03a81fb | 337 | int ret; |
9f449915 PP |
338 | |
339 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
340 | if (!strutils_is_star_glob_pattern(event_name)) { | |
341 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
342 | event_name); | |
343 | goto error; | |
344 | } | |
345 | ||
9f449915 PP |
346 | /* |
347 | * If the event name is a star-at-end only globbing pattern, | |
348 | * then we can validate the individual exclusions. Otherwise | |
349 | * all exclusions are passed to the session daemon. | |
350 | */ | |
351 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
b03a81fb | 352 | const char *const *exclusion; |
9f449915 PP |
353 | |
354 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
355 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
356 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 357 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 358 | if (ret) { |
5ef79758 MD |
359 | goto error; |
360 | } | |
748bde76 | 361 | } |
748bde76 JI |
362 | } |
363 | } | |
9f449915 | 364 | |
b03a81fb SM |
365 | ret = 0; |
366 | goto end; | |
367 | ||
368 | error: | |
369 | ret = -1; | |
370 | ||
371 | end: | |
372 | return ret; | |
373 | } | |
374 | ||
375 | static int create_exclusion_list_and_validate(const char *event_name, | |
376 | const char *exclusions_arg, | |
377 | char ***exclusion_list) | |
378 | { | |
379 | int ret = 0; | |
380 | char **exclusions = NULL; | |
381 | ||
382 | /* Split exclusions. */ | |
383 | exclusions = strutils_split(exclusions_arg, ',', true); | |
384 | if (!exclusions) { | |
385 | goto error; | |
386 | } | |
387 | ||
388 | if (validate_exclusion_list(event_name, (const char **) exclusions) != | |
389 | 0) { | |
390 | goto error; | |
391 | } | |
392 | ||
9f449915 PP |
393 | *exclusion_list = exclusions; |
394 | ||
748bde76 | 395 | goto end; |
9f449915 | 396 | |
748bde76 | 397 | error: |
9f449915 PP |
398 | ret = -1; |
399 | strutils_free_null_terminated_array_of_strings(exclusions); | |
400 | ||
748bde76 | 401 | end: |
748bde76 JI |
402 | return ret; |
403 | } | |
502bbe89 | 404 | |
9f449915 PP |
405 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
406 | int *warn) | |
502bbe89 | 407 | { |
9f449915 | 408 | char * const *exclusion; |
502bbe89 | 409 | |
9f449915 PP |
410 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
411 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 412 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 413 | *exclusion); |
502bbe89 PP |
414 | *warn = 1; |
415 | } | |
416 | } | |
417 | } | |
418 | ||
f3ed775e | 419 | /* |
6181537c | 420 | * Enabling event using the lttng API. |
89476427 | 421 | * Note: in case of error only the last error code will be return. |
f3ed775e | 422 | */ |
cd80958d | 423 | static int enable_events(char *session_name) |
f3ed775e | 424 | { |
89476427 JRJ |
425 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
426 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 427 | char *event_name, *channel_name = NULL; |
91744e14 | 428 | struct lttng_event *ev; |
7d29a247 | 429 | struct lttng_domain dom; |
7ed70bc9 | 430 | char **exclusion_list = NULL; |
0c4e727b | 431 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 432 | |
441c16a7 MD |
433 | memset(&dom, 0, sizeof(dom)); |
434 | ||
91744e14 FD |
435 | ev = lttng_event_create(); |
436 | if (!ev) { | |
437 | ret = CMD_ERROR; | |
438 | goto error; | |
439 | } | |
440 | ||
53a80697 | 441 | if (opt_kernel) { |
67b58630 JG |
442 | if (opt_loglevel) { |
443 | WARN("Kernel loglevels are not supported."); | |
444 | } | |
53a80697 MD |
445 | } |
446 | ||
7d29a247 DG |
447 | /* Create lttng domain */ |
448 | if (opt_kernel) { | |
449 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 450 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 451 | } else if (opt_userspace) { |
2bdd86d4 | 452 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 453 | /* Default. */ |
8692d4e5 | 454 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
455 | } else if (opt_jul) { |
456 | dom.type = LTTNG_DOMAIN_JUL; | |
457 | /* Default. */ | |
458 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
459 | } else if (opt_log4j) { |
460 | dom.type = LTTNG_DOMAIN_LOG4J; | |
461 | /* Default. */ | |
462 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
463 | } else if (opt_python) { |
464 | dom.type = LTTNG_DOMAIN_PYTHON; | |
465 | /* Default. */ | |
466 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 467 | } else { |
3ecec76a PP |
468 | /* Checked by the caller. */ |
469 | assert(0); | |
2bdd86d4 | 470 | } |
7d29a247 | 471 | |
8b08c525 AB |
472 | if (opt_exclude) { |
473 | switch (dom.type) { | |
474 | case LTTNG_DOMAIN_KERNEL: | |
475 | case LTTNG_DOMAIN_JUL: | |
476 | case LTTNG_DOMAIN_LOG4J: | |
477 | case LTTNG_DOMAIN_PYTHON: | |
478 | ERR("Event name exclusions are not yet implemented for %s events", | |
479 | get_domain_str(dom.type)); | |
480 | ret = CMD_ERROR; | |
481 | goto error; | |
482 | case LTTNG_DOMAIN_UST: | |
483 | /* Exclusions supported */ | |
484 | break; | |
485 | default: | |
486 | assert(0); | |
487 | } | |
d5dd17fd JI |
488 | } |
489 | ||
4fd2697f FD |
490 | /* |
491 | * Adding a filter to a probe, function or userspace-probe would be | |
492 | * denied by the kernel tracer as it's not supported at the moment. We | |
493 | * do an early check here to warn the user. | |
494 | */ | |
495 | if (opt_filter && opt_kernel) { | |
496 | switch (opt_event_type) { | |
497 | case LTTNG_EVENT_ALL: | |
498 | case LTTNG_EVENT_TRACEPOINT: | |
499 | case LTTNG_EVENT_SYSCALL: | |
500 | break; | |
501 | case LTTNG_EVENT_PROBE: | |
502 | case LTTNG_EVENT_USERSPACE_PROBE: | |
503 | case LTTNG_EVENT_FUNCTION: | |
504 | ERR("Filter expressions are not supported for %s events", | |
505 | get_event_type_str(opt_event_type)); | |
506 | ret = CMD_ERROR; | |
507 | goto error; | |
508 | default: | |
509 | ret = CMD_UNDEFINED; | |
510 | goto error; | |
511 | } | |
512 | } | |
513 | ||
85076754 | 514 | channel_name = opt_channel_name; |
ae856491 | 515 | |
cd80958d DG |
516 | handle = lttng_create_handle(session_name, &dom); |
517 | if (handle == NULL) { | |
518 | ret = -1; | |
519 | goto error; | |
520 | } | |
1aef21b6 | 521 | |
89476427 JRJ |
522 | /* Prepare Mi */ |
523 | if (lttng_opt_mi) { | |
524 | /* Open a events element */ | |
525 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
526 | if (ret) { | |
527 | ret = CMD_ERROR; | |
528 | goto error; | |
529 | } | |
530 | } | |
531 | ||
cd80958d | 532 | if (opt_enable_all) { |
8c9ae521 | 533 | /* Default setup for enable all */ |
75e8c5ab | 534 | if (opt_kernel) { |
91744e14 FD |
535 | ev->type = opt_event_type; |
536 | strcpy(ev->name, "*"); | |
300b8fd5 | 537 | /* kernel loglevels not implemented */ |
91744e14 | 538 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 539 | } else { |
91744e14 FD |
540 | ev->type = LTTNG_EVENT_TRACEPOINT; |
541 | strcpy(ev->name, "*"); | |
542 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 543 | if (opt_loglevel) { |
7e8f2e9c JG |
544 | int name_search_ret; |
545 | ||
0e115563 | 546 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 547 | |
b2064f54 | 548 | if (opt_userspace) { |
7e8f2e9c JG |
549 | enum lttng_loglevel loglevel; |
550 | ||
551 | name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
552 | ev->loglevel = (int) loglevel; | |
b2064f54 | 553 | } else if (opt_jul) { |
7e8f2e9c JG |
554 | enum lttng_loglevel_jul loglevel; |
555 | ||
556 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
557 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 558 | } else if (opt_log4j) { |
7e8f2e9c JG |
559 | enum lttng_loglevel_log4j loglevel; |
560 | ||
561 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
562 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
563 | } else { |
564 | /* python domain. */ | |
7e8f2e9c JG |
565 | enum lttng_loglevel_python loglevel; |
566 | ||
567 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
568 | ev->loglevel = (int) loglevel; | |
b2064f54 | 569 | } |
7e8f2e9c JG |
570 | |
571 | if (name_search_ret == -1) { | |
300b8fd5 | 572 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 573 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
574 | goto error; |
575 | } | |
22e25b71 | 576 | } else { |
0e115563 | 577 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 578 | if (opt_userspace) { |
91744e14 | 579 | ev->loglevel = -1; |
34aa3685 | 580 | } else if (opt_jul) { |
91744e14 | 581 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 582 | } else if (opt_log4j) { |
91744e14 | 583 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 584 | } else if (opt_python) { |
91744e14 | 585 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 586 | } |
300b8fd5 | 587 | } |
75e8c5ab | 588 | } |
8c9ae521 | 589 | |
7ed70bc9 | 590 | if (opt_exclude) { |
9f449915 PP |
591 | ret = create_exclusion_list_and_validate("*", |
592 | opt_exclude, &exclusion_list); | |
593 | if (ret) { | |
594 | ret = CMD_ERROR; | |
7ed70bc9 JI |
595 | goto error; |
596 | } | |
502bbe89 | 597 | |
91744e14 | 598 | ev->exclusion = 1; |
502bbe89 | 599 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 600 | &warn); |
7ed70bc9 | 601 | } |
025faf73 | 602 | if (!opt_filter) { |
7ed70bc9 | 603 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 604 | ev, channel_name, |
7ed70bc9 | 605 | NULL, |
9f449915 PP |
606 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
607 | exclusion_list); | |
025faf73 DG |
608 | if (ret < 0) { |
609 | switch (-ret) { | |
610 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
611 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 612 | print_channel_name(channel_name), session_name); |
89476427 | 613 | warn = 1; |
025faf73 | 614 | break; |
45d5d421 CB |
615 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
616 | { | |
617 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
618 | ERR("Events: %s (channel %s, session %s)", | |
619 | msg, | |
620 | print_channel_name(channel_name), | |
621 | session_name); | |
622 | error = 1; | |
623 | break; | |
624 | } | |
025faf73 DG |
625 | default: |
626 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
627 | lttng_strerror(ret), |
628 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
629 | ? print_raw_channel_name(channel_name) | |
630 | : print_channel_name(channel_name), | |
631 | session_name); | |
89476427 | 632 | error = 1; |
025faf73 DG |
633 | break; |
634 | } | |
635 | goto end; | |
42224349 | 636 | } |
8c9ae521 | 637 | |
025faf73 DG |
638 | switch (opt_event_type) { |
639 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 640 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 641 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
642 | |
643 | if (!exclusion_string) { | |
644 | PERROR("Cannot allocate exclusion_string"); | |
645 | error = 1; | |
646 | goto end; | |
647 | } | |
9c48cab3 | 648 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 649 | get_domain_str(dom.type), |
9c48cab3 | 650 | exclusion_string, |
85076754 | 651 | print_channel_name(channel_name), |
025faf73 | 652 | opt_loglevel); |
9c48cab3 | 653 | free(exclusion_string); |
025faf73 | 654 | } else { |
9f449915 | 655 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
656 | |
657 | if (!exclusion_string) { | |
658 | PERROR("Cannot allocate exclusion_string"); | |
659 | error = 1; | |
660 | goto end; | |
661 | } | |
9c48cab3 | 662 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 663 | get_domain_str(dom.type), |
9c48cab3 | 664 | exclusion_string, |
85076754 | 665 | print_channel_name(channel_name)); |
9c48cab3 | 666 | free(exclusion_string); |
025faf73 DG |
667 | } |
668 | break; | |
669 | case LTTNG_EVENT_SYSCALL: | |
670 | if (opt_kernel) { | |
6e911cad MD |
671 | MSG("All %s system calls are enabled in channel %s", |
672 | get_domain_str(dom.type), | |
85076754 | 673 | print_channel_name(channel_name)); |
025faf73 DG |
674 | } |
675 | break; | |
676 | case LTTNG_EVENT_ALL: | |
67b58630 | 677 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 678 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
679 | |
680 | if (!exclusion_string) { | |
681 | PERROR("Cannot allocate exclusion_string"); | |
682 | error = 1; | |
683 | goto end; | |
684 | } | |
9c48cab3 | 685 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 686 | get_domain_str(dom.type), |
9c48cab3 | 687 | exclusion_string, |
85076754 | 688 | print_channel_name(channel_name), |
025faf73 | 689 | opt_loglevel); |
9c48cab3 | 690 | free(exclusion_string); |
025faf73 | 691 | } else { |
9f449915 | 692 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
693 | |
694 | if (!exclusion_string) { | |
695 | PERROR("Cannot allocate exclusion_string"); | |
696 | error = 1; | |
697 | goto end; | |
698 | } | |
9c48cab3 | 699 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 700 | get_domain_str(dom.type), |
9c48cab3 | 701 | exclusion_string, |
85076754 | 702 | print_channel_name(channel_name)); |
9c48cab3 | 703 | free(exclusion_string); |
025faf73 DG |
704 | } |
705 | break; | |
706 | default: | |
707 | /* | |
708 | * We should not be here since lttng_enable_event should have | |
709 | * failed on the event type. | |
710 | */ | |
711 | goto error; | |
57064ada | 712 | } |
f3ed775e | 713 | } |
89476427 | 714 | |
025faf73 | 715 | if (opt_filter) { |
91744e14 | 716 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
717 | opt_filter, |
718 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
719 | exclusion_list); | |
89476427 JRJ |
720 | if (command_ret < 0) { |
721 | switch (-command_ret) { | |
16363652 | 722 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 723 | WARN("Filter on all events is already enabled" |
16363652 | 724 | " (channel %s, session %s)", |
85076754 | 725 | print_channel_name(channel_name), session_name); |
89476427 | 726 | warn = 1; |
16363652 | 727 | break; |
45d5d421 CB |
728 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
729 | { | |
730 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
731 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
732 | msg, | |
733 | print_channel_name(channel_name), | |
734 | session_name, opt_filter); | |
735 | error = 1; | |
736 | break; | |
737 | } | |
16363652 | 738 | default: |
85076754 | 739 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
740 | lttng_strerror(command_ret), |
741 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
742 | ? print_raw_channel_name(channel_name) |
743 | : print_channel_name(channel_name), | |
744 | session_name, opt_filter); | |
89476427 | 745 | error = 1; |
16363652 DG |
746 | break; |
747 | } | |
89476427 | 748 | error_holder = command_ret; |
16363652 | 749 | } else { |
91744e14 | 750 | ev->filter = 1; |
16363652 DG |
751 | MSG("Filter '%s' successfully set", opt_filter); |
752 | } | |
753 | } | |
89476427 JRJ |
754 | |
755 | if (lttng_opt_mi) { | |
756 | /* The wildcard * is used for kernel and ust domain to | |
757 | * represent ALL. We copy * in event name to force the wildcard use | |
758 | * for kernel domain | |
759 | * | |
760 | * Note: this is strictly for semantic and printing while in | |
761 | * machine interface mode. | |
762 | */ | |
91744e14 | 763 | strcpy(ev->name, "*"); |
89476427 JRJ |
764 | |
765 | /* If we reach here the events are enabled */ | |
766 | if (!error && !warn) { | |
91744e14 | 767 | ev->enabled = 1; |
89476427 | 768 | } else { |
91744e14 | 769 | ev->enabled = 0; |
89476427 JRJ |
770 | success = 0; |
771 | } | |
91744e14 | 772 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
773 | if (ret) { |
774 | ret = CMD_ERROR; | |
775 | goto error; | |
776 | } | |
777 | ||
778 | /* print exclusion */ | |
9f449915 | 779 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
780 | if (ret) { |
781 | ret = CMD_ERROR; | |
782 | goto error; | |
783 | } | |
784 | ||
785 | /* Success ? */ | |
786 | ret = mi_lttng_writer_write_element_bool(writer, | |
787 | mi_lttng_element_command_success, success); | |
788 | if (ret) { | |
789 | ret = CMD_ERROR; | |
790 | goto error; | |
791 | } | |
792 | ||
793 | /* Close event element */ | |
794 | ret = mi_lttng_writer_close_element(writer); | |
795 | if (ret) { | |
796 | ret = CMD_ERROR; | |
797 | goto error; | |
798 | } | |
799 | } | |
800 | ||
8c9ae521 | 801 | goto end; |
f3ed775e DG |
802 | } |
803 | ||
804 | /* Strip event list */ | |
805 | event_name = strtok(opt_event_list, ","); | |
806 | while (event_name != NULL) { | |
6181537c | 807 | /* Copy name and type of the event */ |
91744e14 FD |
808 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
809 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
810 | ev->type = opt_event_type; | |
6181537c | 811 | |
f3ed775e DG |
812 | /* Kernel tracer action */ |
813 | if (opt_kernel) { | |
814 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
815 | event_name, |
816 | print_channel_name(channel_name)); | |
f3ed775e DG |
817 | |
818 | switch (opt_event_type) { | |
29c62722 MD |
819 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
820 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
821 | if (strcmp(ev->name, "*")) { |
822 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
823 | } |
824 | break; | |
e6ddca71 | 825 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 826 | break; |
7d29a247 | 827 | case LTTNG_EVENT_PROBE: |
91744e14 | 828 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 829 | if (ret) { |
cf0e5467 | 830 | ERR("Unable to parse probe options"); |
91744e14 | 831 | ret = CMD_ERROR; |
0d63dd19 DG |
832 | goto error; |
833 | } | |
f3ed775e | 834 | break; |
dcabc190 | 835 | case LTTNG_EVENT_USERSPACE_PROBE: |
0c4e727b JR |
836 | assert(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
837 | ||
838 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 839 | if (ret) { |
36aa2f64 FD |
840 | switch (ret) { |
841 | case CMD_UNSUPPORTED: | |
842 | /* | |
843 | * Error message describing | |
844 | * what is not supported was | |
845 | * printed in the function. | |
846 | */ | |
847 | break; | |
848 | case CMD_ERROR: | |
849 | default: | |
850 | ERR("Unable to parse userspace probe options"); | |
851 | break; | |
852 | } | |
dcabc190 FD |
853 | goto error; |
854 | } | |
0c4e727b JR |
855 | |
856 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
857 | if (ret) { | |
858 | WARN("Failed to set probe location on event"); | |
859 | ret = CMD_ERROR; | |
860 | goto error; | |
861 | } | |
862 | ||
863 | /* Ownership of the uprobe location was transferred to the event. */ | |
864 | uprobe_loc = NULL; | |
dcabc190 | 865 | break; |
f3ed775e | 866 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 867 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 868 | if (ret) { |
8f0d098b | 869 | ERR("Unable to parse function probe options"); |
91744e14 | 870 | ret = CMD_ERROR; |
8f0d098b MD |
871 | goto error; |
872 | } | |
873 | break; | |
a54bd42d | 874 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 875 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 876 | break; |
f3ed775e | 877 | default: |
1ab1ea0b | 878 | ret = CMD_UNDEFINED; |
f3ed775e DG |
879 | goto error; |
880 | } | |
0cda4f28 | 881 | |
0cda4f28 | 882 | /* kernel loglevels not implemented */ |
91744e14 | 883 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 884 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 885 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 886 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
887 | |
888 | switch (opt_event_type) { | |
889 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
890 | /* Fall-through */ |
891 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 892 | /* Copy name and type of the event */ |
91744e14 FD |
893 | ev->type = LTTNG_EVENT_TRACEPOINT; |
894 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
895 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
896 | break; |
897 | case LTTNG_EVENT_PROBE: | |
898 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 899 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 900 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 901 | default: |
cc62c0c0 | 902 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 903 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
904 | goto error; |
905 | } | |
0cda4f28 | 906 | |
7ed70bc9 | 907 | if (opt_exclude) { |
91744e14 | 908 | ev->exclusion = 1; |
d5dd17fd JI |
909 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
910 | ERR("Exclusion option can only be used with tracepoint events"); | |
911 | ret = CMD_ERROR; | |
912 | goto error; | |
913 | } | |
7ed70bc9 | 914 | /* Free previously allocated items */ |
9f449915 PP |
915 | strutils_free_null_terminated_array_of_strings( |
916 | exclusion_list); | |
917 | exclusion_list = NULL; | |
918 | ret = create_exclusion_list_and_validate( | |
919 | event_name, opt_exclude, | |
920 | &exclusion_list); | |
921 | if (ret) { | |
922 | ret = CMD_ERROR; | |
7ed70bc9 JI |
923 | goto error; |
924 | } | |
502bbe89 PP |
925 | |
926 | warn_on_truncated_exclusion_names( | |
9f449915 | 927 | exclusion_list, &warn); |
7ed70bc9 JI |
928 | } |
929 | ||
91744e14 | 930 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 931 | if (opt_loglevel) { |
7e8f2e9c JG |
932 | enum lttng_loglevel loglevel; |
933 | const int name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
934 | ||
935 | if (name_search_ret == -1) { | |
8005f29a | 936 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 937 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
938 | goto error; |
939 | } | |
7e8f2e9c JG |
940 | |
941 | ev->loglevel = (int) loglevel; | |
22e25b71 | 942 | } else { |
91744e14 | 943 | ev->loglevel = -1; |
ed7f4083 | 944 | } |
0e115563 | 945 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
946 | if (opt_event_type != LTTNG_EVENT_ALL && |
947 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 948 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
949 | ret = CMD_UNSUPPORTED; |
950 | goto error; | |
951 | } | |
b2064f54 | 952 | |
91744e14 | 953 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 954 | if (opt_loglevel) { |
7e8f2e9c JG |
955 | int name_search_ret; |
956 | ||
5cdb6027 | 957 | if (opt_jul) { |
7e8f2e9c JG |
958 | enum lttng_loglevel_jul loglevel; |
959 | ||
960 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
961 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 962 | } else if (opt_log4j) { |
7e8f2e9c JG |
963 | enum lttng_loglevel_log4j loglevel; |
964 | ||
965 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
966 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
967 | } else { |
968 | /* python domain. */ | |
7e8f2e9c JG |
969 | enum lttng_loglevel_python loglevel; |
970 | ||
971 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
972 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 973 | } |
7e8f2e9c JG |
974 | |
975 | if (name_search_ret) { | |
b2064f54 DG |
976 | ERR("Unknown loglevel %s", opt_loglevel); |
977 | ret = -LTTNG_ERR_INVALID; | |
978 | goto error; | |
979 | } | |
980 | } else { | |
5cdb6027 | 981 | if (opt_jul) { |
91744e14 | 982 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 983 | } else if (opt_log4j) { |
91744e14 | 984 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 985 | } else if (opt_python) { |
91744e14 | 986 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 987 | } |
b2064f54 | 988 | } |
91744e14 FD |
989 | ev->type = LTTNG_EVENT_TRACEPOINT; |
990 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
991 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 992 | } else { |
3ecec76a | 993 | assert(0); |
f3ed775e DG |
994 | } |
995 | ||
025faf73 | 996 | if (!opt_filter) { |
9c48cab3 JI |
997 | char *exclusion_string; |
998 | ||
89476427 | 999 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1000 | ev, channel_name, |
9f449915 PP |
1001 | NULL, |
1002 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1003 | exclusion_list); | |
1004 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1005 | if (!exclusion_string) { |
1006 | PERROR("Cannot allocate exclusion_string"); | |
1007 | error = 1; | |
1008 | goto end; | |
1009 | } | |
89476427 | 1010 | if (command_ret < 0) { |
025faf73 | 1011 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1012 | switch (-command_ret) { |
025faf73 | 1013 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1014 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1015 | event_name, |
9c48cab3 | 1016 | exclusion_string, |
85076754 | 1017 | print_channel_name(channel_name), session_name); |
89476427 | 1018 | warn = 1; |
025faf73 | 1019 | break; |
45d5d421 CB |
1020 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1021 | { | |
1022 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1023 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1024 | exclusion_string, | |
1025 | msg, | |
1026 | print_channel_name(channel_name), | |
1027 | session_name); | |
1028 | error = 1; | |
1029 | break; | |
1030 | } | |
dcabc190 FD |
1031 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1032 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1033 | event_name, print_channel_name(channel_name), | |
1034 | session_name); | |
1035 | error = 1; | |
1036 | break; | |
025faf73 | 1037 | default: |
9c48cab3 JI |
1038 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1039 | exclusion_string, | |
da3d7d0e JRJ |
1040 | lttng_strerror(command_ret), |
1041 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1042 | ? print_raw_channel_name(channel_name) |
1043 | : print_channel_name(channel_name), | |
1044 | session_name); | |
89476427 | 1045 | error = 1; |
025faf73 DG |
1046 | break; |
1047 | } | |
89476427 | 1048 | error_holder = command_ret; |
025faf73 | 1049 | } else { |
8274eeba AB |
1050 | switch (dom.type) { |
1051 | case LTTNG_DOMAIN_KERNEL: | |
1052 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1053 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1054 | get_domain_str(dom.type), |
1055 | event_name, | |
1056 | exclusion_string, | |
1057 | print_channel_name(channel_name)); | |
1058 | break; | |
1059 | case LTTNG_DOMAIN_JUL: | |
1060 | case LTTNG_DOMAIN_LOG4J: | |
1061 | case LTTNG_DOMAIN_PYTHON: | |
1062 | /* | |
1063 | * Don't print the default channel | |
1064 | * name for agent domains. | |
1065 | */ | |
895707da | 1066 | MSG("%s event %s%s enabled", |
8274eeba AB |
1067 | get_domain_str(dom.type), |
1068 | event_name, | |
1069 | exclusion_string); | |
1070 | break; | |
1071 | default: | |
1072 | assert(0); | |
49ceaa70 | 1073 | } |
42224349 | 1074 | } |
9c48cab3 | 1075 | free(exclusion_string); |
6181537c | 1076 | } |
025faf73 DG |
1077 | |
1078 | if (opt_filter) { | |
9c48cab3 JI |
1079 | char *exclusion_string; |
1080 | ||
89476427 | 1081 | /* Filter present */ |
91744e14 | 1082 | ev->filter = 1; |
89476427 | 1083 | |
91744e14 | 1084 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1085 | opt_filter, |
1086 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1087 | exclusion_list); | |
1088 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1089 | if (!exclusion_string) { |
1090 | PERROR("Cannot allocate exclusion_string"); | |
1091 | error = 1; | |
1092 | goto end; | |
1093 | } | |
89476427 JRJ |
1094 | if (command_ret < 0) { |
1095 | switch (-command_ret) { | |
7671f53c | 1096 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1097 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1098 | " (channel %s, session %s)", |
85076754 | 1099 | event_name, |
9c48cab3 | 1100 | exclusion_string, |
85076754 | 1101 | print_channel_name(channel_name), session_name); |
89476427 | 1102 | warn = 1; |
7671f53c | 1103 | break; |
45d5d421 CB |
1104 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1105 | { | |
1106 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1107 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1108 | exclusion_string, |
1109 | msg, | |
1110 | print_channel_name(channel_name), | |
1111 | session_name, opt_filter); | |
1112 | error = 1; | |
1113 | break; | |
1114 | } | |
7671f53c | 1115 | default: |
91744e14 | 1116 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1117 | exclusion_string, |
da3d7d0e JRJ |
1118 | lttng_strerror(command_ret), |
1119 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1120 | ? print_raw_channel_name(channel_name) |
1121 | : print_channel_name(channel_name), | |
1122 | session_name, opt_filter); | |
89476427 | 1123 | error = 1; |
7671f53c CB |
1124 | break; |
1125 | } | |
89476427 JRJ |
1126 | error_holder = command_ret; |
1127 | ||
16363652 | 1128 | } else { |
9c48cab3 JI |
1129 | MSG("Event %s%s: Filter '%s' successfully set", |
1130 | event_name, exclusion_string, | |
1131 | opt_filter); | |
53a80697 | 1132 | } |
9c48cab3 | 1133 | free(exclusion_string); |
53a80697 | 1134 | } |
6181537c | 1135 | |
89476427 JRJ |
1136 | if (lttng_opt_mi) { |
1137 | if (command_ret) { | |
1138 | success = 0; | |
91744e14 | 1139 | ev->enabled = 0; |
89476427 | 1140 | } else { |
91744e14 | 1141 | ev->enabled = 1; |
89476427 JRJ |
1142 | } |
1143 | ||
91744e14 | 1144 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1145 | if (ret) { |
1146 | ret = CMD_ERROR; | |
1147 | goto error; | |
1148 | } | |
1149 | ||
1150 | /* print exclusion */ | |
9f449915 | 1151 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1152 | if (ret) { |
1153 | ret = CMD_ERROR; | |
1154 | goto error; | |
1155 | } | |
1156 | ||
1157 | /* Success ? */ | |
1158 | ret = mi_lttng_writer_write_element_bool(writer, | |
1159 | mi_lttng_element_command_success, success); | |
1160 | if (ret) { | |
1161 | ret = CMD_ERROR; | |
1162 | goto end; | |
1163 | } | |
1164 | ||
1165 | /* Close event element */ | |
1166 | ret = mi_lttng_writer_close_element(writer); | |
1167 | if (ret) { | |
1168 | ret = CMD_ERROR; | |
1169 | goto end; | |
1170 | } | |
1171 | } | |
1172 | ||
f3ed775e DG |
1173 | /* Next event */ |
1174 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1175 | /* Reset warn, error and success */ |
1176 | success = 1; | |
f3ed775e DG |
1177 | } |
1178 | ||
8c9ae521 | 1179 | end: |
89476427 JRJ |
1180 | /* Close Mi */ |
1181 | if (lttng_opt_mi) { | |
1182 | /* Close events element */ | |
1183 | ret = mi_lttng_writer_close_element(writer); | |
1184 | if (ret) { | |
1185 | ret = CMD_ERROR; | |
1186 | goto error; | |
1187 | } | |
1188 | } | |
f3ed775e | 1189 | error: |
ae856491 DG |
1190 | if (warn) { |
1191 | ret = CMD_WARNING; | |
1192 | } | |
89476427 JRJ |
1193 | if (error) { |
1194 | ret = CMD_ERROR; | |
1195 | } | |
cd80958d | 1196 | lttng_destroy_handle(handle); |
9f449915 | 1197 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
0c4e727b | 1198 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1199 | |
89476427 JRJ |
1200 | /* Overwrite ret with error_holder if there was an actual error with |
1201 | * enabling an event. | |
1202 | */ | |
1203 | ret = error_holder ? error_holder : ret; | |
1204 | ||
91744e14 | 1205 | lttng_event_destroy(ev); |
f3ed775e DG |
1206 | return ret; |
1207 | } | |
1208 | ||
1209 | /* | |
6181537c | 1210 | * Add event to trace session |
f3ed775e DG |
1211 | */ |
1212 | int cmd_enable_events(int argc, const char **argv) | |
1213 | { | |
89476427 | 1214 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1215 | static poptContext pc; |
cd80958d | 1216 | char *session_name = NULL; |
68c7f6e5 | 1217 | const char *leftover = NULL; |
de044b7a | 1218 | int event_type = -1; |
f3ed775e DG |
1219 | |
1220 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1221 | poptReadDefaultConfig(pc, 0); | |
1222 | ||
1223 | /* Default event type */ | |
7a3d1328 | 1224 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1225 | |
1226 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1227 | switch (opt) { | |
1228 | case OPT_HELP: | |
4ba92f18 | 1229 | SHOW_HELP(); |
f3ed775e | 1230 | goto end; |
f3ed775e | 1231 | case OPT_TRACEPOINT: |
e6ddca71 | 1232 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1233 | break; |
cf0e5467 | 1234 | case OPT_PROBE: |
7d29a247 | 1235 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1236 | break; |
dcabc190 FD |
1237 | case OPT_USERSPACE_PROBE: |
1238 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1239 | break; | |
f3ed775e DG |
1240 | case OPT_FUNCTION: |
1241 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1242 | break; |
a54bd42d MD |
1243 | case OPT_SYSCALL: |
1244 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1245 | break; |
eeac7d46 MD |
1246 | case OPT_USERSPACE: |
1247 | opt_userspace = 1; | |
eeac7d46 | 1248 | break; |
0cda4f28 | 1249 | case OPT_LOGLEVEL: |
8005f29a | 1250 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1251 | opt_loglevel = poptGetOptArg(pc); |
1252 | break; | |
1253 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1254 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1255 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1256 | break; |
679b4943 SM |
1257 | case OPT_LIST_OPTIONS: |
1258 | list_cmd_options(stdout, long_options); | |
679b4943 | 1259 | goto end; |
53a80697 MD |
1260 | case OPT_FILTER: |
1261 | break; | |
fac3366c JI |
1262 | case OPT_EXCLUDE: |
1263 | break; | |
f3ed775e | 1264 | default: |
f3ed775e DG |
1265 | ret = CMD_UNDEFINED; |
1266 | goto end; | |
1267 | } | |
de044b7a DG |
1268 | |
1269 | /* Validate event type. Multiple event type are not supported. */ | |
1270 | if (event_type == -1) { | |
1271 | event_type = opt_event_type; | |
1272 | } else { | |
1273 | if (event_type != opt_event_type) { | |
1274 | ERR("Multiple event type not supported."); | |
1275 | ret = CMD_ERROR; | |
1276 | goto end; | |
1277 | } | |
1278 | } | |
f3ed775e DG |
1279 | } |
1280 | ||
3ecec76a | 1281 | ret = print_missing_or_multiple_domains( |
3533d06b JG |
1282 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1283 | opt_python, | |
1284 | true); | |
3ecec76a PP |
1285 | if (ret) { |
1286 | ret = CMD_ERROR; | |
1287 | goto end; | |
1288 | } | |
1289 | ||
89476427 JRJ |
1290 | /* Mi check */ |
1291 | if (lttng_opt_mi) { | |
1292 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1293 | if (!writer) { | |
1294 | ret = -LTTNG_ERR_NOMEM; | |
1295 | goto end; | |
1296 | } | |
1297 | ||
1298 | /* Open command element */ | |
1299 | ret = mi_lttng_writer_command_open(writer, | |
1300 | mi_lttng_element_command_enable_event); | |
1301 | if (ret) { | |
1302 | ret = CMD_ERROR; | |
1303 | goto end; | |
1304 | } | |
1305 | ||
1306 | /* Open output element */ | |
1307 | ret = mi_lttng_writer_open_element(writer, | |
1308 | mi_lttng_element_command_output); | |
1309 | if (ret) { | |
1310 | ret = CMD_ERROR; | |
1311 | goto end; | |
1312 | } | |
1313 | } | |
1314 | ||
f3ed775e DG |
1315 | opt_event_list = (char*) poptGetArg(pc); |
1316 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1317 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1318 | ret = CMD_ERROR; |
f3ed775e DG |
1319 | goto end; |
1320 | } | |
1321 | ||
68c7f6e5 JD |
1322 | leftover = poptGetArg(pc); |
1323 | if (leftover) { | |
1324 | ERR("Unknown argument: %s", leftover); | |
1325 | ret = CMD_ERROR; | |
1326 | goto end; | |
1327 | } | |
1328 | ||
cd80958d DG |
1329 | if (!opt_session_name) { |
1330 | session_name = get_session_name(); | |
1331 | if (session_name == NULL) { | |
89476427 JRJ |
1332 | command_ret = CMD_ERROR; |
1333 | success = 0; | |
1334 | goto mi_closing; | |
cd80958d DG |
1335 | } |
1336 | } else { | |
1337 | session_name = opt_session_name; | |
1338 | } | |
1339 | ||
89476427 JRJ |
1340 | command_ret = enable_events(session_name); |
1341 | if (command_ret) { | |
1342 | success = 0; | |
1343 | goto mi_closing; | |
1344 | } | |
1345 | ||
1346 | mi_closing: | |
1347 | /* Mi closing */ | |
1348 | if (lttng_opt_mi) { | |
1349 | /* Close output element */ | |
1350 | ret = mi_lttng_writer_close_element(writer); | |
1351 | if (ret) { | |
1352 | ret = CMD_ERROR; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | ret = mi_lttng_writer_write_element_bool(writer, | |
1357 | mi_lttng_element_command_success, success); | |
1358 | if (ret) { | |
1359 | ret = CMD_ERROR; | |
1360 | goto end; | |
1361 | } | |
1362 | ||
1363 | /* Command element close */ | |
1364 | ret = mi_lttng_writer_command_close(writer); | |
1365 | if (ret) { | |
1366 | ret = CMD_ERROR; | |
1367 | goto end; | |
1368 | } | |
1369 | } | |
f3ed775e DG |
1370 | |
1371 | end: | |
89476427 JRJ |
1372 | /* Mi clean-up */ |
1373 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1374 | /* Preserve original error code */ | |
1375 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1376 | } | |
1377 | ||
cd80958d DG |
1378 | if (opt_session_name == NULL) { |
1379 | free(session_name); | |
1380 | } | |
1381 | ||
89476427 JRJ |
1382 | /* Overwrite ret if an error occurred in enable_events */ |
1383 | ret = command_ret ? command_ret : ret; | |
1384 | ||
ca1c3607 | 1385 | poptFreeContext(pc); |
f3ed775e DG |
1386 | return ret; |
1387 | } | |
9f449915 | 1388 |