Commit | Line | Data |
---|---|---|
f3ed775e | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
f3ed775e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f3ed775e | 5 | * |
f3ed775e DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
f3ed775e DG |
9 | #include <popt.h> |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
f3ed775e DG |
12 | #include <sys/stat.h> |
13 | #include <sys/types.h> | |
14 | #include <unistd.h> | |
5a0de755 | 15 | #include <inttypes.h> |
8f0d098b | 16 | #include <ctype.h> |
f3ed775e | 17 | |
c9e313bc SM |
18 | #include <common/sessiond-comm/sessiond-comm.hpp> |
19 | #include <common/compat/string.hpp> | |
20 | #include <common/compat/getenv.hpp> | |
21 | #include <common/string-utils/string-utils.hpp> | |
22 | #include <common/utils.hpp> | |
f3ed775e | 23 | |
89476427 | 24 | /* Mi dependancy */ |
c9e313bc | 25 | #include <common/mi-lttng.hpp> |
89476427 | 26 | |
c9e313bc SM |
27 | #include <lttng/domain-internal.hpp> |
28 | #include <lttng/event-internal.hpp> | |
7e8f2e9c | 29 | |
c9e313bc SM |
30 | #include "../command.hpp" |
31 | #include "../loglevel.hpp" | |
32 | #include "../uprobe.hpp" | |
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 | 38 | static int opt_event_type; |
0cda4f28 MD |
39 | static const char *opt_loglevel; |
40 | static int opt_loglevel_type; | |
6181537c | 41 | static int opt_kernel; |
5440dc42 | 42 | static char *opt_session_name; |
f3ed775e | 43 | static int opt_userspace; |
b9dfb167 | 44 | static int opt_jul; |
5cdb6027 | 45 | static int opt_log4j; |
0e115563 | 46 | static int opt_python; |
f3ed775e | 47 | static int opt_enable_all; |
cf0e5467 | 48 | static char *opt_probe; |
dcabc190 | 49 | static char *opt_userspace_probe; |
8f0d098b | 50 | static char *opt_function; |
f3ed775e | 51 | static char *opt_channel_name; |
53a80697 | 52 | static char *opt_filter; |
fac3366c | 53 | static char *opt_exclude; |
f3ed775e | 54 | |
4fc83d94 PP |
55 | #ifdef LTTNG_EMBED_HELP |
56 | static const char help_msg[] = | |
57 | #include <lttng-enable-event.1.h> | |
58 | ; | |
59 | #endif | |
60 | ||
f3ed775e DG |
61 | enum { |
62 | OPT_HELP = 1, | |
f3ed775e | 63 | OPT_TRACEPOINT, |
cf0e5467 | 64 | OPT_PROBE, |
dcabc190 | 65 | OPT_USERSPACE_PROBE, |
f3ed775e | 66 | OPT_FUNCTION, |
a54bd42d | 67 | OPT_SYSCALL, |
eeac7d46 | 68 | OPT_USERSPACE, |
0cda4f28 MD |
69 | OPT_LOGLEVEL, |
70 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 71 | OPT_LIST_OPTIONS, |
53a80697 | 72 | OPT_FILTER, |
fac3366c | 73 | OPT_EXCLUDE, |
f3ed775e DG |
74 | }; |
75 | ||
cd80958d | 76 | static struct lttng_handle *handle; |
89476427 | 77 | static struct mi_writer *writer; |
cd80958d | 78 | |
f3ed775e DG |
79 | static struct poptOption long_options[] = { |
80 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
81 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 82 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 83 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
84 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
85 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 86 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 87 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 88 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 89 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
f3ed775e | 90 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 91 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
dcabc190 | 92 | {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0}, |
40e9d5d3 | 93 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
7ebae521 | 94 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
95 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
96 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 97 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 98 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 99 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
100 | {0, 0, 0, 0, 0, 0, 0} |
101 | }; | |
102 | ||
0d63dd19 | 103 | /* |
6181537c | 104 | * Parse probe options. |
0d63dd19 | 105 | */ |
cf0e5467 | 106 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 107 | { |
49d4e302 JRJ |
108 | int ret = CMD_SUCCESS; |
109 | int match; | |
8ff0bbd0 | 110 | char s_hex[19]; |
8ab7c0d9 | 111 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
112 | char name[LTTNG_SYMBOL_NAME_LEN]; |
113 | ||
114 | if (opt == NULL) { | |
49d4e302 | 115 | ret = CMD_ERROR; |
8f0d098b | 116 | goto end; |
0d63dd19 DG |
117 | } |
118 | ||
119 | /* Check for symbol+offset */ | |
49d4e302 | 120 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 121 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 122 | if (match == 2) { |
7d29a247 | 123 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 124 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 125 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 126 | if (*s_hex == '\0') { |
8ff0bbd0 | 127 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 128 | ret = CMD_ERROR; |
8f0d098b | 129 | goto end; |
0d63dd19 | 130 | } |
44e63aa7 | 131 | ev->attr.probe.offset = strtoull(s_hex, NULL, 0); |
cf0e5467 | 132 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 133 | ev->attr.probe.addr = 0; |
8f0d098b MD |
134 | goto end; |
135 | } | |
136 | ||
137 | /* Check for symbol */ | |
88c91427 | 138 | if (isalpha(name[0]) || name[0] == '_') { |
49d4e302 | 139 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 140 | name); |
49d4e302 | 141 | if (match == 1) { |
8f0d098b | 142 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 143 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
144 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
145 | ev->attr.probe.offset = 0; | |
146 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
147 | ev->attr.probe.addr = 0; | |
148 | goto end; | |
149 | } | |
0d63dd19 DG |
150 | } |
151 | ||
152 | /* Check for address */ | |
49d4e302 JRJ |
153 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
154 | if (match > 0) { | |
531be721 FD |
155 | /* |
156 | * Return an error if the first character of the tentative | |
157 | * address is NULL or not a digit. It can be "0" if the address | |
158 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
159 | */ | |
160 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
161 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 162 | ret = CMD_ERROR; |
8f0d098b | 163 | goto end; |
0d63dd19 | 164 | } |
44e63aa7 | 165 | ev->attr.probe.addr = strtoull(s_hex, NULL, 0); |
cf0e5467 | 166 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
167 | ev->attr.probe.offset = 0; |
168 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 169 | goto end; |
0d63dd19 DG |
170 | } |
171 | ||
172 | /* No match */ | |
49d4e302 | 173 | ret = CMD_ERROR; |
0d63dd19 | 174 | |
8f0d098b | 175 | end: |
0d63dd19 DG |
176 | return ret; |
177 | } | |
178 | ||
85076754 MD |
179 | static |
180 | const char *print_channel_name(const char *name) | |
181 | { | |
182 | return name ? : DEFAULT_CHANNEL_NAME; | |
183 | } | |
184 | ||
185 | static | |
186 | const char *print_raw_channel_name(const char *name) | |
187 | { | |
188 | return name ? : "<default>"; | |
189 | } | |
190 | ||
89476427 JRJ |
191 | /* |
192 | * Mi print exlcusion list | |
193 | */ | |
194 | static | |
e358ddd5 | 195 | int mi_print_exclusion(const struct lttng_dynamic_pointer_array *exclusions) |
89476427 | 196 | { |
e358ddd5 JG |
197 | int ret; |
198 | size_t i; | |
199 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); | |
89476427 | 200 | |
a0377dfe | 201 | LTTNG_ASSERT(writer); |
89476427 JRJ |
202 | |
203 | if (count == 0) { | |
204 | ret = 0; | |
205 | goto end; | |
206 | } | |
e358ddd5 | 207 | |
89476427 JRJ |
208 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); |
209 | if (ret) { | |
210 | goto end; | |
211 | } | |
212 | ||
213 | for (i = 0; i < count; i++) { | |
48a40005 | 214 | const char *exclusion = (const char *) lttng_dynamic_pointer_array_get_pointer( |
e358ddd5 JG |
215 | exclusions, i); |
216 | ||
89476427 | 217 | ret = mi_lttng_writer_write_element_string(writer, |
e358ddd5 | 218 | config_element_exclusion, exclusion); |
89476427 JRJ |
219 | if (ret) { |
220 | goto end; | |
221 | } | |
222 | } | |
223 | ||
224 | /* Close exclusions element */ | |
225 | ret = mi_lttng_writer_close_element(writer); | |
226 | ||
227 | end: | |
228 | return ret; | |
229 | } | |
230 | ||
9c48cab3 JI |
231 | /* |
232 | * Return allocated string for pretty-printing exclusion names. | |
233 | */ | |
234 | static | |
e358ddd5 | 235 | char *print_exclusions(const struct lttng_dynamic_pointer_array *exclusions) |
9c48cab3 JI |
236 | { |
237 | int length = 0; | |
e358ddd5 | 238 | size_t i; |
bfe36393 | 239 | const char preamble[] = " excluding "; |
9c48cab3 | 240 | char *ret; |
e358ddd5 | 241 | const size_t count = lttng_dynamic_pointer_array_get_count(exclusions); |
9c48cab3 JI |
242 | |
243 | if (count == 0) { | |
244 | return strdup(""); | |
245 | } | |
246 | ||
e358ddd5 | 247 | /* Calculate total required length. */ |
9c48cab3 | 248 | for (i = 0; i < count; i++) { |
48a40005 | 249 | const char *exclusion = (const char *) lttng_dynamic_pointer_array_get_pointer( |
e358ddd5 JG |
250 | exclusions, i); |
251 | ||
252 | length += strlen(exclusion) + 4; | |
9c48cab3 JI |
253 | } |
254 | ||
bfe36393 | 255 | length += sizeof(preamble); |
64803277 | 256 | ret = calloc<char>(length); |
fd591b18 MD |
257 | if (!ret) { |
258 | return NULL; | |
259 | } | |
e358ddd5 | 260 | |
9c48cab3 JI |
261 | strncpy(ret, preamble, length); |
262 | for (i = 0; i < count; i++) { | |
48a40005 | 263 | const char *exclusion = (const char *) lttng_dynamic_pointer_array_get_pointer( |
e358ddd5 JG |
264 | exclusions, i); |
265 | ||
9f449915 | 266 | strcat(ret, "\""); |
e358ddd5 | 267 | strcat(ret, exclusion); |
9f449915 | 268 | strcat(ret, "\""); |
9c48cab3 | 269 | if (i != count - 1) { |
9f449915 | 270 | strcat(ret, ", "); |
9c48cab3 JI |
271 | } |
272 | } | |
89476427 | 273 | |
9c48cab3 JI |
274 | return ret; |
275 | } | |
276 | ||
748bde76 | 277 | static |
9f449915 | 278 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 279 | { |
9f449915 PP |
280 | bool warn = false; |
281 | int ret = 0; | |
282 | const char *e = event_name; | |
283 | const char *x = exclusion; | |
284 | ||
285 | /* Scan both the excluder and the event letter by letter */ | |
286 | while (true) { | |
287 | if (*e == '\\') { | |
288 | if (*x != *e) { | |
289 | warn = true; | |
290 | goto end; | |
291 | } | |
748bde76 | 292 | |
9f449915 PP |
293 | e++; |
294 | x++; | |
295 | goto cmp_chars; | |
296 | } | |
297 | ||
298 | if (*x == '*') { | |
299 | /* Event is a subset of the excluder */ | |
300 | ERR("Event %s: %s excludes all events from %s", | |
301 | event_name, exclusion, event_name); | |
302 | goto error; | |
303 | } | |
304 | ||
305 | if (*e == '*') { | |
306 | /* | |
307 | * Reached the end of the event name before the | |
308 | * end of the exclusion: this is valid. | |
309 | */ | |
310 | goto end; | |
311 | } | |
312 | ||
313 | cmp_chars: | |
314 | if (*x != *e) { | |
315 | warn = true; | |
316 | break; | |
317 | } | |
318 | ||
319 | x++; | |
320 | e++; | |
748bde76 JI |
321 | } |
322 | ||
9f449915 | 323 | goto end; |
748bde76 | 324 | |
9f449915 PP |
325 | error: |
326 | ret = -1; | |
748bde76 | 327 | |
9f449915 PP |
328 | end: |
329 | if (warn) { | |
330 | WARN("Event %s: %s does not exclude any events from %s", | |
331 | event_name, exclusion, event_name); | |
332 | } | |
748bde76 | 333 | |
9f449915 PP |
334 | return ret; |
335 | } | |
336 | ||
e358ddd5 JG |
337 | int validate_exclusion_list(const char *event_name, |
338 | const struct lttng_dynamic_pointer_array *exclusions) | |
9f449915 | 339 | { |
b03a81fb | 340 | int ret; |
9f449915 PP |
341 | |
342 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
343 | if (!strutils_is_star_glob_pattern(event_name)) { | |
344 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
345 | event_name); | |
346 | goto error; | |
347 | } | |
348 | ||
9f449915 PP |
349 | /* |
350 | * If the event name is a star-at-end only globbing pattern, | |
351 | * then we can validate the individual exclusions. Otherwise | |
352 | * all exclusions are passed to the session daemon. | |
353 | */ | |
354 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
e358ddd5 JG |
355 | size_t i, num_exclusions; |
356 | ||
357 | num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
358 | ||
359 | for (i = 0; i < num_exclusions; i++) { | |
360 | const char *exclusion = | |
48a40005 | 361 | (const char *) lttng_dynamic_pointer_array_get_pointer( |
e358ddd5 | 362 | exclusions, i); |
9f449915 | 363 | |
e358ddd5 JG |
364 | if (!strutils_is_star_glob_pattern(exclusion) || |
365 | strutils_is_star_at_the_end_only_glob_pattern(exclusion)) { | |
366 | ret = check_exclusion_subsets(event_name, exclusion); | |
9f449915 | 367 | if (ret) { |
5ef79758 MD |
368 | goto error; |
369 | } | |
748bde76 | 370 | } |
748bde76 JI |
371 | } |
372 | } | |
9f449915 | 373 | |
b03a81fb SM |
374 | ret = 0; |
375 | goto end; | |
376 | ||
377 | error: | |
378 | ret = -1; | |
379 | ||
380 | end: | |
381 | return ret; | |
382 | } | |
383 | ||
384 | static int create_exclusion_list_and_validate(const char *event_name, | |
385 | const char *exclusions_arg, | |
e358ddd5 | 386 | struct lttng_dynamic_pointer_array *exclusions) |
b03a81fb SM |
387 | { |
388 | int ret = 0; | |
b03a81fb SM |
389 | |
390 | /* Split exclusions. */ | |
e358ddd5 JG |
391 | ret = strutils_split(exclusions_arg, ',', true, exclusions); |
392 | if (ret < 0) { | |
b03a81fb SM |
393 | goto error; |
394 | } | |
395 | ||
e358ddd5 | 396 | if (validate_exclusion_list(event_name, exclusions) != |
b03a81fb SM |
397 | 0) { |
398 | goto error; | |
399 | } | |
400 | ||
748bde76 | 401 | goto end; |
9f449915 | 402 | |
748bde76 | 403 | error: |
9f449915 | 404 | ret = -1; |
e358ddd5 | 405 | lttng_dynamic_pointer_array_reset(exclusions); |
9f449915 | 406 | |
748bde76 | 407 | end: |
748bde76 JI |
408 | return ret; |
409 | } | |
502bbe89 | 410 | |
e358ddd5 | 411 | static void warn_on_truncated_exclusion_names(const struct lttng_dynamic_pointer_array *exclusions, |
9f449915 | 412 | int *warn) |
502bbe89 | 413 | { |
e358ddd5 JG |
414 | size_t i; |
415 | const size_t num_exclusions = lttng_dynamic_pointer_array_get_count(exclusions); | |
416 | ||
417 | for (i = 0; i < num_exclusions; i++) { | |
48a40005 | 418 | const char * const exclusion = (const char *) lttng_dynamic_pointer_array_get_pointer(exclusions, i); |
502bbe89 | 419 | |
e358ddd5 | 420 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { |
502bbe89 | 421 | WARN("Event exclusion \"%s\" will be truncated", |
e358ddd5 | 422 | exclusion); |
502bbe89 PP |
423 | *warn = 1; |
424 | } | |
425 | } | |
426 | } | |
427 | ||
f3ed775e | 428 | /* |
6181537c | 429 | * Enabling event using the lttng API. |
89476427 | 430 | * Note: in case of error only the last error code will be return. |
f3ed775e | 431 | */ |
5b915816 | 432 | static int enable_events(char *session_name, char *event_list) |
f3ed775e | 433 | { |
89476427 JRJ |
434 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
435 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 436 | char *event_name, *channel_name = NULL; |
91744e14 | 437 | struct lttng_event *ev; |
e358ddd5 JG |
438 | struct lttng_domain dom = {}; |
439 | struct lttng_dynamic_pointer_array exclusions; | |
0c4e727b | 440 | struct lttng_userspace_probe_location *uprobe_loc = NULL; |
f3ed775e | 441 | |
e358ddd5 | 442 | lttng_dynamic_pointer_array_init(&exclusions, NULL); |
441c16a7 | 443 | |
91744e14 FD |
444 | ev = lttng_event_create(); |
445 | if (!ev) { | |
446 | ret = CMD_ERROR; | |
447 | goto error; | |
448 | } | |
449 | ||
53a80697 | 450 | if (opt_kernel) { |
67b58630 JG |
451 | if (opt_loglevel) { |
452 | WARN("Kernel loglevels are not supported."); | |
453 | } | |
53a80697 MD |
454 | } |
455 | ||
7d29a247 DG |
456 | /* Create lttng domain */ |
457 | if (opt_kernel) { | |
458 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 459 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 460 | } else if (opt_userspace) { |
2bdd86d4 | 461 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 462 | /* Default. */ |
8692d4e5 | 463 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
464 | } else if (opt_jul) { |
465 | dom.type = LTTNG_DOMAIN_JUL; | |
466 | /* Default. */ | |
467 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
468 | } else if (opt_log4j) { |
469 | dom.type = LTTNG_DOMAIN_LOG4J; | |
470 | /* Default. */ | |
471 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
472 | } else if (opt_python) { |
473 | dom.type = LTTNG_DOMAIN_PYTHON; | |
474 | /* Default. */ | |
475 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 476 | } else { |
3ecec76a | 477 | /* Checked by the caller. */ |
a0377dfe | 478 | abort(); |
2bdd86d4 | 479 | } |
7d29a247 | 480 | |
8b08c525 AB |
481 | if (opt_exclude) { |
482 | switch (dom.type) { | |
483 | case LTTNG_DOMAIN_KERNEL: | |
484 | case LTTNG_DOMAIN_JUL: | |
485 | case LTTNG_DOMAIN_LOG4J: | |
486 | case LTTNG_DOMAIN_PYTHON: | |
487 | ERR("Event name exclusions are not yet implemented for %s events", | |
1004b719 | 488 | lttng_domain_type_str(dom.type)); |
8b08c525 AB |
489 | ret = CMD_ERROR; |
490 | goto error; | |
491 | case LTTNG_DOMAIN_UST: | |
492 | /* Exclusions supported */ | |
493 | break; | |
494 | default: | |
a0377dfe | 495 | abort(); |
8b08c525 | 496 | } |
d5dd17fd JI |
497 | } |
498 | ||
4fd2697f FD |
499 | /* |
500 | * Adding a filter to a probe, function or userspace-probe would be | |
501 | * denied by the kernel tracer as it's not supported at the moment. We | |
502 | * do an early check here to warn the user. | |
503 | */ | |
504 | if (opt_filter && opt_kernel) { | |
505 | switch (opt_event_type) { | |
506 | case LTTNG_EVENT_ALL: | |
507 | case LTTNG_EVENT_TRACEPOINT: | |
508 | case LTTNG_EVENT_SYSCALL: | |
509 | break; | |
510 | case LTTNG_EVENT_PROBE: | |
511 | case LTTNG_EVENT_USERSPACE_PROBE: | |
512 | case LTTNG_EVENT_FUNCTION: | |
513 | ERR("Filter expressions are not supported for %s events", | |
48a40005 | 514 | get_event_type_str((lttng_event_type) opt_event_type)); |
4fd2697f FD |
515 | ret = CMD_ERROR; |
516 | goto error; | |
517 | default: | |
518 | ret = CMD_UNDEFINED; | |
519 | goto error; | |
520 | } | |
521 | } | |
522 | ||
85076754 | 523 | channel_name = opt_channel_name; |
ae856491 | 524 | |
cd80958d DG |
525 | handle = lttng_create_handle(session_name, &dom); |
526 | if (handle == NULL) { | |
527 | ret = -1; | |
528 | goto error; | |
529 | } | |
1aef21b6 | 530 | |
89476427 JRJ |
531 | /* Prepare Mi */ |
532 | if (lttng_opt_mi) { | |
533 | /* Open a events element */ | |
534 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
535 | if (ret) { | |
536 | ret = CMD_ERROR; | |
537 | goto error; | |
538 | } | |
539 | } | |
540 | ||
cd80958d | 541 | if (opt_enable_all) { |
8c9ae521 | 542 | /* Default setup for enable all */ |
75e8c5ab | 543 | if (opt_kernel) { |
48a40005 | 544 | ev->type = (lttng_event_type) opt_event_type; |
91744e14 | 545 | strcpy(ev->name, "*"); |
300b8fd5 | 546 | /* kernel loglevels not implemented */ |
91744e14 | 547 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 548 | } else { |
91744e14 FD |
549 | ev->type = LTTNG_EVENT_TRACEPOINT; |
550 | strcpy(ev->name, "*"); | |
48a40005 | 551 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
300b8fd5 | 552 | if (opt_loglevel) { |
7e8f2e9c JG |
553 | int name_search_ret; |
554 | ||
a0377dfe | 555 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
7e8f2e9c | 556 | |
b2064f54 | 557 | if (opt_userspace) { |
7e8f2e9c JG |
558 | enum lttng_loglevel loglevel; |
559 | ||
560 | name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
561 | ev->loglevel = (int) loglevel; | |
b2064f54 | 562 | } else if (opt_jul) { |
7e8f2e9c JG |
563 | enum lttng_loglevel_jul loglevel; |
564 | ||
565 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
566 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 567 | } else if (opt_log4j) { |
7e8f2e9c JG |
568 | enum lttng_loglevel_log4j loglevel; |
569 | ||
570 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
571 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
572 | } else { |
573 | /* python domain. */ | |
7e8f2e9c JG |
574 | enum lttng_loglevel_python loglevel; |
575 | ||
576 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
577 | ev->loglevel = (int) loglevel; | |
b2064f54 | 578 | } |
7e8f2e9c JG |
579 | |
580 | if (name_search_ret == -1) { | |
300b8fd5 | 581 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 582 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
583 | goto error; |
584 | } | |
22e25b71 | 585 | } else { |
a0377dfe | 586 | LTTNG_ASSERT(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 587 | if (opt_userspace) { |
91744e14 | 588 | ev->loglevel = -1; |
34aa3685 | 589 | } else if (opt_jul) { |
91744e14 | 590 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 591 | } else if (opt_log4j) { |
91744e14 | 592 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 593 | } else if (opt_python) { |
91744e14 | 594 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 595 | } |
300b8fd5 | 596 | } |
75e8c5ab | 597 | } |
8c9ae521 | 598 | |
7ed70bc9 | 599 | if (opt_exclude) { |
9f449915 | 600 | ret = create_exclusion_list_and_validate("*", |
e358ddd5 | 601 | opt_exclude, &exclusions); |
9f449915 PP |
602 | if (ret) { |
603 | ret = CMD_ERROR; | |
7ed70bc9 JI |
604 | goto error; |
605 | } | |
502bbe89 | 606 | |
91744e14 | 607 | ev->exclusion = 1; |
e358ddd5 | 608 | warn_on_truncated_exclusion_names(&exclusions, |
9f449915 | 609 | &warn); |
7ed70bc9 | 610 | } |
025faf73 | 611 | if (!opt_filter) { |
7ed70bc9 | 612 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 613 | ev, channel_name, |
7ed70bc9 | 614 | NULL, |
e358ddd5 JG |
615 | lttng_dynamic_pointer_array_get_count(&exclusions), |
616 | (char **) exclusions.array.buffer.data); | |
025faf73 DG |
617 | if (ret < 0) { |
618 | switch (-ret) { | |
619 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
620 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 621 | print_channel_name(channel_name), session_name); |
89476427 | 622 | warn = 1; |
025faf73 | 623 | break; |
45d5d421 CB |
624 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
625 | { | |
626 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
627 | ERR("Events: %s (channel %s, session %s)", | |
628 | msg, | |
629 | print_channel_name(channel_name), | |
630 | session_name); | |
631 | error = 1; | |
632 | break; | |
633 | } | |
025faf73 DG |
634 | default: |
635 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
636 | lttng_strerror(ret), |
637 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
638 | ? print_raw_channel_name(channel_name) | |
639 | : print_channel_name(channel_name), | |
640 | session_name); | |
89476427 | 641 | error = 1; |
025faf73 DG |
642 | break; |
643 | } | |
644 | goto end; | |
42224349 | 645 | } |
8c9ae521 | 646 | |
025faf73 DG |
647 | switch (opt_event_type) { |
648 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 649 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 650 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
651 | |
652 | if (!exclusion_string) { | |
653 | PERROR("Cannot allocate exclusion_string"); | |
654 | error = 1; | |
655 | goto end; | |
656 | } | |
9c48cab3 | 657 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
1004b719 | 658 | lttng_domain_type_str(dom.type), |
9c48cab3 | 659 | exclusion_string, |
85076754 | 660 | print_channel_name(channel_name), |
025faf73 | 661 | opt_loglevel); |
9c48cab3 | 662 | free(exclusion_string); |
025faf73 | 663 | } else { |
e358ddd5 | 664 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
665 | |
666 | if (!exclusion_string) { | |
667 | PERROR("Cannot allocate exclusion_string"); | |
668 | error = 1; | |
669 | goto end; | |
670 | } | |
9c48cab3 | 671 | MSG("All %s tracepoints%s are enabled in channel %s", |
1004b719 | 672 | lttng_domain_type_str(dom.type), |
9c48cab3 | 673 | exclusion_string, |
85076754 | 674 | print_channel_name(channel_name)); |
9c48cab3 | 675 | free(exclusion_string); |
025faf73 DG |
676 | } |
677 | break; | |
678 | case LTTNG_EVENT_SYSCALL: | |
679 | if (opt_kernel) { | |
6e911cad | 680 | MSG("All %s system calls are enabled in channel %s", |
1004b719 | 681 | lttng_domain_type_str(dom.type), |
85076754 | 682 | print_channel_name(channel_name)); |
025faf73 DG |
683 | } |
684 | break; | |
685 | case LTTNG_EVENT_ALL: | |
67b58630 | 686 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
e358ddd5 | 687 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
688 | |
689 | if (!exclusion_string) { | |
690 | PERROR("Cannot allocate exclusion_string"); | |
691 | error = 1; | |
692 | goto end; | |
693 | } | |
9c48cab3 | 694 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
1004b719 | 695 | lttng_domain_type_str(dom.type), |
9c48cab3 | 696 | exclusion_string, |
85076754 | 697 | print_channel_name(channel_name), |
025faf73 | 698 | opt_loglevel); |
9c48cab3 | 699 | free(exclusion_string); |
025faf73 | 700 | } else { |
e358ddd5 | 701 | char *exclusion_string = print_exclusions(&exclusions); |
5ef79758 MD |
702 | |
703 | if (!exclusion_string) { | |
704 | PERROR("Cannot allocate exclusion_string"); | |
705 | error = 1; | |
706 | goto end; | |
707 | } | |
9c48cab3 | 708 | MSG("All %s events%s are enabled in channel %s", |
1004b719 | 709 | lttng_domain_type_str(dom.type), |
9c48cab3 | 710 | exclusion_string, |
85076754 | 711 | print_channel_name(channel_name)); |
9c48cab3 | 712 | free(exclusion_string); |
025faf73 DG |
713 | } |
714 | break; | |
715 | default: | |
716 | /* | |
717 | * We should not be here since lttng_enable_event should have | |
718 | * failed on the event type. | |
719 | */ | |
720 | goto error; | |
57064ada | 721 | } |
f3ed775e | 722 | } |
89476427 | 723 | |
025faf73 | 724 | if (opt_filter) { |
91744e14 | 725 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
e358ddd5 JG |
726 | opt_filter, |
727 | lttng_dynamic_pointer_array_get_count(&exclusions), | |
728 | (char **) exclusions.array.buffer.data); | |
89476427 JRJ |
729 | if (command_ret < 0) { |
730 | switch (-command_ret) { | |
16363652 | 731 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 732 | WARN("Filter on all events is already enabled" |
16363652 | 733 | " (channel %s, session %s)", |
85076754 | 734 | print_channel_name(channel_name), session_name); |
89476427 | 735 | warn = 1; |
16363652 | 736 | break; |
45d5d421 CB |
737 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
738 | { | |
739 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
740 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
741 | msg, | |
742 | print_channel_name(channel_name), | |
743 | session_name, opt_filter); | |
744 | error = 1; | |
745 | break; | |
746 | } | |
16363652 | 747 | default: |
85076754 | 748 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
749 | lttng_strerror(command_ret), |
750 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
751 | ? print_raw_channel_name(channel_name) |
752 | : print_channel_name(channel_name), | |
753 | session_name, opt_filter); | |
89476427 | 754 | error = 1; |
16363652 DG |
755 | break; |
756 | } | |
89476427 | 757 | error_holder = command_ret; |
16363652 | 758 | } else { |
91744e14 | 759 | ev->filter = 1; |
16363652 DG |
760 | MSG("Filter '%s' successfully set", opt_filter); |
761 | } | |
762 | } | |
89476427 JRJ |
763 | |
764 | if (lttng_opt_mi) { | |
765 | /* The wildcard * is used for kernel and ust domain to | |
766 | * represent ALL. We copy * in event name to force the wildcard use | |
767 | * for kernel domain | |
768 | * | |
769 | * Note: this is strictly for semantic and printing while in | |
770 | * machine interface mode. | |
771 | */ | |
91744e14 | 772 | strcpy(ev->name, "*"); |
89476427 JRJ |
773 | |
774 | /* If we reach here the events are enabled */ | |
775 | if (!error && !warn) { | |
91744e14 | 776 | ev->enabled = 1; |
89476427 | 777 | } else { |
91744e14 | 778 | ev->enabled = 0; |
89476427 JRJ |
779 | success = 0; |
780 | } | |
91744e14 | 781 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
782 | if (ret) { |
783 | ret = CMD_ERROR; | |
784 | goto error; | |
785 | } | |
786 | ||
787 | /* print exclusion */ | |
e358ddd5 | 788 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
789 | if (ret) { |
790 | ret = CMD_ERROR; | |
791 | goto error; | |
792 | } | |
793 | ||
794 | /* Success ? */ | |
795 | ret = mi_lttng_writer_write_element_bool(writer, | |
796 | mi_lttng_element_command_success, success); | |
797 | if (ret) { | |
798 | ret = CMD_ERROR; | |
799 | goto error; | |
800 | } | |
801 | ||
802 | /* Close event element */ | |
803 | ret = mi_lttng_writer_close_element(writer); | |
804 | if (ret) { | |
805 | ret = CMD_ERROR; | |
806 | goto error; | |
807 | } | |
808 | } | |
809 | ||
8c9ae521 | 810 | goto end; |
f3ed775e DG |
811 | } |
812 | ||
813 | /* Strip event list */ | |
5b915816 | 814 | event_name = strtok(event_list, ","); |
f3ed775e | 815 | while (event_name != NULL) { |
6181537c | 816 | /* Copy name and type of the event */ |
91744e14 FD |
817 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
818 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
48a40005 | 819 | ev->type = (lttng_event_type) opt_event_type; |
6181537c | 820 | |
f3ed775e DG |
821 | /* Kernel tracer action */ |
822 | if (opt_kernel) { | |
823 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
824 | event_name, |
825 | print_channel_name(channel_name)); | |
f3ed775e DG |
826 | |
827 | switch (opt_event_type) { | |
29c62722 MD |
828 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
829 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
830 | if (strcmp(ev->name, "*")) { |
831 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
832 | } |
833 | break; | |
e6ddca71 | 834 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 835 | break; |
7d29a247 | 836 | case LTTNG_EVENT_PROBE: |
91744e14 | 837 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 838 | if (ret) { |
cf0e5467 | 839 | ERR("Unable to parse probe options"); |
91744e14 | 840 | ret = CMD_ERROR; |
0d63dd19 DG |
841 | goto error; |
842 | } | |
f3ed775e | 843 | break; |
dcabc190 | 844 | case LTTNG_EVENT_USERSPACE_PROBE: |
a0377dfe | 845 | LTTNG_ASSERT(ev->type == LTTNG_EVENT_USERSPACE_PROBE); |
0c4e727b JR |
846 | |
847 | ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc); | |
dcabc190 | 848 | if (ret) { |
36aa2f64 FD |
849 | switch (ret) { |
850 | case CMD_UNSUPPORTED: | |
851 | /* | |
852 | * Error message describing | |
853 | * what is not supported was | |
854 | * printed in the function. | |
855 | */ | |
856 | break; | |
857 | case CMD_ERROR: | |
858 | default: | |
859 | ERR("Unable to parse userspace probe options"); | |
860 | break; | |
861 | } | |
dcabc190 FD |
862 | goto error; |
863 | } | |
0c4e727b JR |
864 | |
865 | ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc); | |
866 | if (ret) { | |
867 | WARN("Failed to set probe location on event"); | |
868 | ret = CMD_ERROR; | |
869 | goto error; | |
870 | } | |
871 | ||
872 | /* Ownership of the uprobe location was transferred to the event. */ | |
873 | uprobe_loc = NULL; | |
dcabc190 | 874 | break; |
f3ed775e | 875 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 876 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 877 | if (ret) { |
8f0d098b | 878 | ERR("Unable to parse function probe options"); |
91744e14 | 879 | ret = CMD_ERROR; |
8f0d098b MD |
880 | goto error; |
881 | } | |
882 | break; | |
a54bd42d | 883 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 884 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 885 | break; |
f3ed775e | 886 | default: |
1ab1ea0b | 887 | ret = CMD_UNDEFINED; |
f3ed775e DG |
888 | goto error; |
889 | } | |
0cda4f28 | 890 | |
0cda4f28 | 891 | /* kernel loglevels not implemented */ |
91744e14 | 892 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 893 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 894 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 895 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
896 | |
897 | switch (opt_event_type) { | |
898 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
899 | /* Fall-through */ |
900 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 901 | /* Copy name and type of the event */ |
91744e14 FD |
902 | ev->type = LTTNG_EVENT_TRACEPOINT; |
903 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
904 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
905 | break; |
906 | case LTTNG_EVENT_PROBE: | |
907 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 908 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 909 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 910 | default: |
cc62c0c0 | 911 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 912 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
913 | goto error; |
914 | } | |
0cda4f28 | 915 | |
7ed70bc9 | 916 | if (opt_exclude) { |
91744e14 | 917 | ev->exclusion = 1; |
d5dd17fd JI |
918 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
919 | ERR("Exclusion option can only be used with tracepoint events"); | |
920 | ret = CMD_ERROR; | |
921 | goto error; | |
922 | } | |
e358ddd5 JG |
923 | /* Free previously allocated items. */ |
924 | lttng_dynamic_pointer_array_reset(&exclusions); | |
9f449915 PP |
925 | ret = create_exclusion_list_and_validate( |
926 | event_name, opt_exclude, | |
e358ddd5 | 927 | &exclusions); |
9f449915 PP |
928 | if (ret) { |
929 | ret = CMD_ERROR; | |
7ed70bc9 JI |
930 | goto error; |
931 | } | |
502bbe89 PP |
932 | |
933 | warn_on_truncated_exclusion_names( | |
e358ddd5 | 934 | &exclusions, &warn); |
7ed70bc9 JI |
935 | } |
936 | ||
48a40005 | 937 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
ed7f4083 | 938 | if (opt_loglevel) { |
7e8f2e9c JG |
939 | enum lttng_loglevel loglevel; |
940 | const int name_search_ret = loglevel_name_to_value(opt_loglevel, &loglevel); | |
941 | ||
942 | if (name_search_ret == -1) { | |
8005f29a | 943 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 944 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
945 | goto error; |
946 | } | |
7e8f2e9c JG |
947 | |
948 | ev->loglevel = (int) loglevel; | |
22e25b71 | 949 | } else { |
91744e14 | 950 | ev->loglevel = -1; |
ed7f4083 | 951 | } |
0e115563 | 952 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
953 | if (opt_event_type != LTTNG_EVENT_ALL && |
954 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 955 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
956 | ret = CMD_UNSUPPORTED; |
957 | goto error; | |
958 | } | |
b2064f54 | 959 | |
48a40005 | 960 | ev->loglevel_type = (lttng_loglevel_type) opt_loglevel_type; |
b2064f54 | 961 | if (opt_loglevel) { |
7e8f2e9c JG |
962 | int name_search_ret; |
963 | ||
5cdb6027 | 964 | if (opt_jul) { |
7e8f2e9c JG |
965 | enum lttng_loglevel_jul loglevel; |
966 | ||
967 | name_search_ret = loglevel_jul_name_to_value(opt_loglevel, &loglevel); | |
968 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 969 | } else if (opt_log4j) { |
7e8f2e9c JG |
970 | enum lttng_loglevel_log4j loglevel; |
971 | ||
972 | name_search_ret = loglevel_log4j_name_to_value(opt_loglevel, &loglevel); | |
973 | ev->loglevel = (int) loglevel; | |
7fefa907 JG |
974 | } else { |
975 | /* python domain. */ | |
7e8f2e9c JG |
976 | enum lttng_loglevel_python loglevel; |
977 | ||
978 | name_search_ret = loglevel_python_name_to_value(opt_loglevel, &loglevel); | |
979 | ev->loglevel = (int) loglevel; | |
5cdb6027 | 980 | } |
7e8f2e9c JG |
981 | |
982 | if (name_search_ret) { | |
b2064f54 DG |
983 | ERR("Unknown loglevel %s", opt_loglevel); |
984 | ret = -LTTNG_ERR_INVALID; | |
985 | goto error; | |
986 | } | |
987 | } else { | |
5cdb6027 | 988 | if (opt_jul) { |
91744e14 | 989 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 990 | } else if (opt_log4j) { |
91744e14 | 991 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 992 | } else if (opt_python) { |
91744e14 | 993 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 994 | } |
b2064f54 | 995 | } |
91744e14 FD |
996 | ev->type = LTTNG_EVENT_TRACEPOINT; |
997 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
998 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 999 | } else { |
a0377dfe | 1000 | abort(); |
f3ed775e DG |
1001 | } |
1002 | ||
025faf73 | 1003 | if (!opt_filter) { |
9c48cab3 JI |
1004 | char *exclusion_string; |
1005 | ||
89476427 | 1006 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1007 | ev, channel_name, |
9f449915 | 1008 | NULL, |
e358ddd5 JG |
1009 | lttng_dynamic_pointer_array_get_count(&exclusions), |
1010 | (char **) exclusions.array.buffer.data); | |
1011 | exclusion_string = print_exclusions(&exclusions); | |
5ef79758 MD |
1012 | if (!exclusion_string) { |
1013 | PERROR("Cannot allocate exclusion_string"); | |
1014 | error = 1; | |
1015 | goto end; | |
1016 | } | |
89476427 | 1017 | if (command_ret < 0) { |
025faf73 | 1018 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1019 | switch (-command_ret) { |
025faf73 | 1020 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1021 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1022 | event_name, |
9c48cab3 | 1023 | exclusion_string, |
85076754 | 1024 | print_channel_name(channel_name), session_name); |
89476427 | 1025 | warn = 1; |
025faf73 | 1026 | break; |
45d5d421 CB |
1027 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1028 | { | |
1029 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1030 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1031 | exclusion_string, | |
1032 | msg, | |
1033 | print_channel_name(channel_name), | |
1034 | session_name); | |
1035 | error = 1; | |
1036 | break; | |
1037 | } | |
dcabc190 FD |
1038 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1039 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1040 | event_name, print_channel_name(channel_name), | |
1041 | session_name); | |
1042 | error = 1; | |
1043 | break; | |
025faf73 | 1044 | default: |
9c48cab3 JI |
1045 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1046 | exclusion_string, | |
da3d7d0e JRJ |
1047 | lttng_strerror(command_ret), |
1048 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1049 | ? print_raw_channel_name(channel_name) |
1050 | : print_channel_name(channel_name), | |
1051 | session_name); | |
89476427 | 1052 | error = 1; |
025faf73 DG |
1053 | break; |
1054 | } | |
89476427 | 1055 | error_holder = command_ret; |
025faf73 | 1056 | } else { |
8274eeba AB |
1057 | switch (dom.type) { |
1058 | case LTTNG_DOMAIN_KERNEL: | |
1059 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1060 | MSG("%s event %s%s created in channel %s", |
1004b719 | 1061 | lttng_domain_type_str(dom.type), |
8274eeba AB |
1062 | event_name, |
1063 | exclusion_string, | |
1064 | print_channel_name(channel_name)); | |
1065 | break; | |
1066 | case LTTNG_DOMAIN_JUL: | |
1067 | case LTTNG_DOMAIN_LOG4J: | |
1068 | case LTTNG_DOMAIN_PYTHON: | |
1069 | /* | |
1070 | * Don't print the default channel | |
1071 | * name for agent domains. | |
1072 | */ | |
895707da | 1073 | MSG("%s event %s%s enabled", |
1004b719 | 1074 | lttng_domain_type_str(dom.type), |
8274eeba AB |
1075 | event_name, |
1076 | exclusion_string); | |
1077 | break; | |
1078 | default: | |
a0377dfe | 1079 | abort(); |
49ceaa70 | 1080 | } |
42224349 | 1081 | } |
9c48cab3 | 1082 | free(exclusion_string); |
6181537c | 1083 | } |
025faf73 DG |
1084 | |
1085 | if (opt_filter) { | |
9c48cab3 JI |
1086 | char *exclusion_string; |
1087 | ||
89476427 | 1088 | /* Filter present */ |
91744e14 | 1089 | ev->filter = 1; |
89476427 | 1090 | |
91744e14 | 1091 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 | 1092 | opt_filter, |
e358ddd5 JG |
1093 | lttng_dynamic_pointer_array_get_count(&exclusions), |
1094 | (char **) exclusions.array.buffer.data); | |
1095 | exclusion_string = print_exclusions(&exclusions); | |
5ef79758 MD |
1096 | if (!exclusion_string) { |
1097 | PERROR("Cannot allocate exclusion_string"); | |
1098 | error = 1; | |
1099 | goto end; | |
1100 | } | |
89476427 JRJ |
1101 | if (command_ret < 0) { |
1102 | switch (-command_ret) { | |
7671f53c | 1103 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1104 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1105 | " (channel %s, session %s)", |
85076754 | 1106 | event_name, |
9c48cab3 | 1107 | exclusion_string, |
85076754 | 1108 | print_channel_name(channel_name), session_name); |
89476427 | 1109 | warn = 1; |
7671f53c | 1110 | break; |
45d5d421 CB |
1111 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1112 | { | |
1113 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1114 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1115 | exclusion_string, |
1116 | msg, | |
1117 | print_channel_name(channel_name), | |
1118 | session_name, opt_filter); | |
1119 | error = 1; | |
1120 | break; | |
1121 | } | |
7671f53c | 1122 | default: |
91744e14 | 1123 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1124 | exclusion_string, |
da3d7d0e JRJ |
1125 | lttng_strerror(command_ret), |
1126 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1127 | ? print_raw_channel_name(channel_name) |
1128 | : print_channel_name(channel_name), | |
1129 | session_name, opt_filter); | |
89476427 | 1130 | error = 1; |
7671f53c CB |
1131 | break; |
1132 | } | |
89476427 JRJ |
1133 | error_holder = command_ret; |
1134 | ||
16363652 | 1135 | } else { |
9c48cab3 JI |
1136 | MSG("Event %s%s: Filter '%s' successfully set", |
1137 | event_name, exclusion_string, | |
1138 | opt_filter); | |
53a80697 | 1139 | } |
9c48cab3 | 1140 | free(exclusion_string); |
53a80697 | 1141 | } |
6181537c | 1142 | |
89476427 JRJ |
1143 | if (lttng_opt_mi) { |
1144 | if (command_ret) { | |
1145 | success = 0; | |
91744e14 | 1146 | ev->enabled = 0; |
89476427 | 1147 | } else { |
91744e14 | 1148 | ev->enabled = 1; |
89476427 JRJ |
1149 | } |
1150 | ||
91744e14 | 1151 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1152 | if (ret) { |
1153 | ret = CMD_ERROR; | |
1154 | goto error; | |
1155 | } | |
1156 | ||
1157 | /* print exclusion */ | |
e358ddd5 | 1158 | ret = mi_print_exclusion(&exclusions); |
89476427 JRJ |
1159 | if (ret) { |
1160 | ret = CMD_ERROR; | |
1161 | goto error; | |
1162 | } | |
1163 | ||
1164 | /* Success ? */ | |
1165 | ret = mi_lttng_writer_write_element_bool(writer, | |
1166 | mi_lttng_element_command_success, success); | |
1167 | if (ret) { | |
1168 | ret = CMD_ERROR; | |
1169 | goto end; | |
1170 | } | |
1171 | ||
1172 | /* Close event element */ | |
1173 | ret = mi_lttng_writer_close_element(writer); | |
1174 | if (ret) { | |
1175 | ret = CMD_ERROR; | |
1176 | goto end; | |
1177 | } | |
1178 | } | |
1179 | ||
f3ed775e DG |
1180 | /* Next event */ |
1181 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1182 | /* Reset warn, error and success */ |
1183 | success = 1; | |
f3ed775e DG |
1184 | } |
1185 | ||
8c9ae521 | 1186 | end: |
89476427 JRJ |
1187 | /* Close Mi */ |
1188 | if (lttng_opt_mi) { | |
1189 | /* Close events element */ | |
1190 | ret = mi_lttng_writer_close_element(writer); | |
1191 | if (ret) { | |
1192 | ret = CMD_ERROR; | |
1193 | goto error; | |
1194 | } | |
1195 | } | |
f3ed775e | 1196 | error: |
ae856491 DG |
1197 | if (warn) { |
1198 | ret = CMD_WARNING; | |
1199 | } | |
89476427 JRJ |
1200 | if (error) { |
1201 | ret = CMD_ERROR; | |
1202 | } | |
cd80958d | 1203 | lttng_destroy_handle(handle); |
e358ddd5 | 1204 | lttng_dynamic_pointer_array_reset(&exclusions); |
0c4e727b | 1205 | lttng_userspace_probe_location_destroy(uprobe_loc); |
7ed70bc9 | 1206 | |
89476427 JRJ |
1207 | /* Overwrite ret with error_holder if there was an actual error with |
1208 | * enabling an event. | |
1209 | */ | |
1210 | ret = error_holder ? error_holder : ret; | |
1211 | ||
91744e14 | 1212 | lttng_event_destroy(ev); |
f3ed775e DG |
1213 | return ret; |
1214 | } | |
1215 | ||
1216 | /* | |
6181537c | 1217 | * Add event to trace session |
f3ed775e DG |
1218 | */ |
1219 | int cmd_enable_events(int argc, const char **argv) | |
1220 | { | |
89476427 | 1221 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1222 | static poptContext pc; |
cd80958d | 1223 | char *session_name = NULL; |
5b915816 MJ |
1224 | char *event_list = NULL; |
1225 | const char *arg_event_list = NULL; | |
68c7f6e5 | 1226 | const char *leftover = NULL; |
de044b7a | 1227 | int event_type = -1; |
f3ed775e DG |
1228 | |
1229 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1230 | poptReadDefaultConfig(pc, 0); | |
1231 | ||
1232 | /* Default event type */ | |
7a3d1328 | 1233 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1234 | |
1235 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1236 | switch (opt) { | |
1237 | case OPT_HELP: | |
4ba92f18 | 1238 | SHOW_HELP(); |
f3ed775e | 1239 | goto end; |
f3ed775e | 1240 | case OPT_TRACEPOINT: |
e6ddca71 | 1241 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1242 | break; |
cf0e5467 | 1243 | case OPT_PROBE: |
7d29a247 | 1244 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1245 | break; |
dcabc190 FD |
1246 | case OPT_USERSPACE_PROBE: |
1247 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1248 | break; | |
f3ed775e DG |
1249 | case OPT_FUNCTION: |
1250 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1251 | break; |
a54bd42d MD |
1252 | case OPT_SYSCALL: |
1253 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1254 | break; |
eeac7d46 MD |
1255 | case OPT_USERSPACE: |
1256 | opt_userspace = 1; | |
eeac7d46 | 1257 | break; |
0cda4f28 | 1258 | case OPT_LOGLEVEL: |
8005f29a | 1259 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1260 | opt_loglevel = poptGetOptArg(pc); |
1261 | break; | |
1262 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1263 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1264 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1265 | break; |
679b4943 SM |
1266 | case OPT_LIST_OPTIONS: |
1267 | list_cmd_options(stdout, long_options); | |
679b4943 | 1268 | goto end; |
53a80697 MD |
1269 | case OPT_FILTER: |
1270 | break; | |
fac3366c JI |
1271 | case OPT_EXCLUDE: |
1272 | break; | |
f3ed775e | 1273 | default: |
f3ed775e DG |
1274 | ret = CMD_UNDEFINED; |
1275 | goto end; | |
1276 | } | |
de044b7a DG |
1277 | |
1278 | /* Validate event type. Multiple event type are not supported. */ | |
1279 | if (event_type == -1) { | |
1280 | event_type = opt_event_type; | |
1281 | } else { | |
1282 | if (event_type != opt_event_type) { | |
1283 | ERR("Multiple event type not supported."); | |
1284 | ret = CMD_ERROR; | |
1285 | goto end; | |
1286 | } | |
1287 | } | |
f3ed775e DG |
1288 | } |
1289 | ||
3ecec76a | 1290 | ret = print_missing_or_multiple_domains( |
3533d06b JG |
1291 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1292 | opt_python, | |
1293 | true); | |
3ecec76a PP |
1294 | if (ret) { |
1295 | ret = CMD_ERROR; | |
1296 | goto end; | |
1297 | } | |
1298 | ||
89476427 JRJ |
1299 | /* Mi check */ |
1300 | if (lttng_opt_mi) { | |
1301 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1302 | if (!writer) { | |
1303 | ret = -LTTNG_ERR_NOMEM; | |
1304 | goto end; | |
1305 | } | |
1306 | ||
1307 | /* Open command element */ | |
1308 | ret = mi_lttng_writer_command_open(writer, | |
1309 | mi_lttng_element_command_enable_event); | |
1310 | if (ret) { | |
1311 | ret = CMD_ERROR; | |
1312 | goto end; | |
1313 | } | |
1314 | ||
1315 | /* Open output element */ | |
1316 | ret = mi_lttng_writer_open_element(writer, | |
1317 | mi_lttng_element_command_output); | |
1318 | if (ret) { | |
1319 | ret = CMD_ERROR; | |
1320 | goto end; | |
1321 | } | |
1322 | } | |
1323 | ||
5b915816 MJ |
1324 | arg_event_list = poptGetArg(pc); |
1325 | if (arg_event_list == NULL && opt_enable_all == 0) { | |
1326 | ERR("Missing event name(s)."); | |
ca1c3607 | 1327 | ret = CMD_ERROR; |
f3ed775e DG |
1328 | goto end; |
1329 | } | |
1330 | ||
5b915816 MJ |
1331 | if (opt_enable_all == 0) { |
1332 | event_list = strdup(arg_event_list); | |
1333 | if (event_list == NULL) { | |
1334 | PERROR("Failed to copy event name(s)"); | |
1335 | ret = CMD_ERROR; | |
1336 | goto end; | |
1337 | } | |
1338 | } | |
1339 | ||
68c7f6e5 JD |
1340 | leftover = poptGetArg(pc); |
1341 | if (leftover) { | |
1342 | ERR("Unknown argument: %s", leftover); | |
1343 | ret = CMD_ERROR; | |
1344 | goto end; | |
1345 | } | |
1346 | ||
cd80958d DG |
1347 | if (!opt_session_name) { |
1348 | session_name = get_session_name(); | |
1349 | if (session_name == NULL) { | |
89476427 JRJ |
1350 | command_ret = CMD_ERROR; |
1351 | success = 0; | |
1352 | goto mi_closing; | |
cd80958d DG |
1353 | } |
1354 | } else { | |
1355 | session_name = opt_session_name; | |
1356 | } | |
1357 | ||
5b915816 | 1358 | command_ret = enable_events(session_name, event_list); |
89476427 JRJ |
1359 | if (command_ret) { |
1360 | success = 0; | |
1361 | goto mi_closing; | |
1362 | } | |
1363 | ||
1364 | mi_closing: | |
1365 | /* Mi closing */ | |
1366 | if (lttng_opt_mi) { | |
1367 | /* Close output element */ | |
1368 | ret = mi_lttng_writer_close_element(writer); | |
1369 | if (ret) { | |
1370 | ret = CMD_ERROR; | |
1371 | goto end; | |
1372 | } | |
1373 | ||
1374 | ret = mi_lttng_writer_write_element_bool(writer, | |
1375 | mi_lttng_element_command_success, success); | |
1376 | if (ret) { | |
1377 | ret = CMD_ERROR; | |
1378 | goto end; | |
1379 | } | |
1380 | ||
1381 | /* Command element close */ | |
1382 | ret = mi_lttng_writer_command_close(writer); | |
1383 | if (ret) { | |
1384 | ret = CMD_ERROR; | |
1385 | goto end; | |
1386 | } | |
1387 | } | |
f3ed775e DG |
1388 | |
1389 | end: | |
89476427 JRJ |
1390 | /* Mi clean-up */ |
1391 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1392 | /* Preserve original error code */ | |
1393 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1394 | } | |
1395 | ||
cd80958d DG |
1396 | if (opt_session_name == NULL) { |
1397 | free(session_name); | |
1398 | } | |
1399 | ||
5b915816 MJ |
1400 | free(event_list); |
1401 | ||
89476427 JRJ |
1402 | /* Overwrite ret if an error occurred in enable_events */ |
1403 | ret = command_ret ? command_ret : ret; | |
1404 | ||
ca1c3607 | 1405 | poptFreeContext(pc); |
f3ed775e DG |
1406 | return ret; |
1407 | } | |
9f449915 | 1408 |