Commit | Line | Data |
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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
f3ed775e DG |
7 | * |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
f3ed775e DG |
16 | */ |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
b2064f54 | 19 | #include <assert.h> |
f3ed775e DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
f3ed775e DG |
23 | #include <sys/stat.h> |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
5a0de755 | 26 | #include <inttypes.h> |
8f0d098b | 27 | #include <ctype.h> |
f3ed775e | 28 | |
343af227 | 29 | #include <common/sessiond-comm/sessiond-comm.h> |
f5436bfc | 30 | #include <common/compat/string.h> |
dbc478f3 | 31 | #include <common/compat/getenv.h> |
9f449915 | 32 | #include <common/string-utils/string-utils.h> |
dbc478f3 | 33 | #include <common/utils.h> |
f3ed775e | 34 | |
dbc478f3 | 35 | #include <lttng/constant.h> |
89476427 JRJ |
36 | /* Mi dependancy */ |
37 | #include <common/mi-lttng.h> | |
38 | ||
39 | #include "../command.h" | |
40 | ||
8ab7c0d9 MD |
41 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
42 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
43 | #endif | |
44 | ||
f3ed775e DG |
45 | static char *opt_event_list; |
46 | static int opt_event_type; | |
0cda4f28 MD |
47 | static const char *opt_loglevel; |
48 | static int opt_loglevel_type; | |
6181537c | 49 | static int opt_kernel; |
5440dc42 | 50 | static char *opt_session_name; |
f3ed775e | 51 | static int opt_userspace; |
b9dfb167 | 52 | static int opt_jul; |
5cdb6027 | 53 | static int opt_log4j; |
0e115563 | 54 | static int opt_python; |
f3ed775e | 55 | static int opt_enable_all; |
cf0e5467 | 56 | static char *opt_probe; |
dcabc190 | 57 | static char *opt_userspace_probe; |
8f0d098b | 58 | static char *opt_function; |
f3ed775e | 59 | static char *opt_channel_name; |
53a80697 | 60 | static char *opt_filter; |
fac3366c | 61 | static char *opt_exclude; |
f3ed775e | 62 | |
4fc83d94 PP |
63 | #ifdef LTTNG_EMBED_HELP |
64 | static const char help_msg[] = | |
65 | #include <lttng-enable-event.1.h> | |
66 | ; | |
67 | #endif | |
68 | ||
f3ed775e DG |
69 | enum { |
70 | OPT_HELP = 1, | |
f3ed775e | 71 | OPT_TRACEPOINT, |
cf0e5467 | 72 | OPT_PROBE, |
dcabc190 | 73 | OPT_USERSPACE_PROBE, |
f3ed775e | 74 | OPT_FUNCTION, |
a54bd42d | 75 | OPT_SYSCALL, |
eeac7d46 | 76 | OPT_USERSPACE, |
0cda4f28 MD |
77 | OPT_LOGLEVEL, |
78 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 79 | OPT_LIST_OPTIONS, |
53a80697 | 80 | OPT_FILTER, |
fac3366c | 81 | OPT_EXCLUDE, |
f3ed775e DG |
82 | }; |
83 | ||
cd80958d | 84 | static struct lttng_handle *handle; |
89476427 | 85 | static struct mi_writer *writer; |
cd80958d | 86 | |
f3ed775e DG |
87 | static struct poptOption long_options[] = { |
88 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
89 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 90 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 91 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
92 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
93 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 94 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 95 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 96 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 97 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
f3ed775e | 98 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 99 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
dcabc190 | 100 | {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0}, |
40e9d5d3 | 101 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
7ebae521 | 102 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
103 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
104 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 105 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 106 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 107 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
108 | {0, 0, 0, 0, 0, 0, 0} |
109 | }; | |
110 | ||
0d63dd19 | 111 | /* |
6181537c | 112 | * Parse probe options. |
0d63dd19 | 113 | */ |
cf0e5467 | 114 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 115 | { |
49d4e302 JRJ |
116 | int ret = CMD_SUCCESS; |
117 | int match; | |
8ff0bbd0 | 118 | char s_hex[19]; |
8ab7c0d9 | 119 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
120 | char name[LTTNG_SYMBOL_NAME_LEN]; |
121 | ||
122 | if (opt == NULL) { | |
49d4e302 | 123 | ret = CMD_ERROR; |
8f0d098b | 124 | goto end; |
0d63dd19 DG |
125 | } |
126 | ||
127 | /* Check for symbol+offset */ | |
49d4e302 | 128 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 129 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 130 | if (match == 2) { |
7d29a247 | 131 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 132 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 133 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 134 | if (*s_hex == '\0') { |
8ff0bbd0 | 135 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 136 | ret = CMD_ERROR; |
8f0d098b | 137 | goto end; |
0d63dd19 | 138 | } |
8ff0bbd0 | 139 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 140 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 141 | ev->attr.probe.addr = 0; |
8f0d098b MD |
142 | goto end; |
143 | } | |
144 | ||
145 | /* Check for symbol */ | |
146 | if (isalpha(name[0])) { | |
49d4e302 | 147 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 148 | name); |
49d4e302 | 149 | if (match == 1) { |
8f0d098b | 150 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 151 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
152 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
153 | ev->attr.probe.offset = 0; | |
154 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
155 | ev->attr.probe.addr = 0; | |
156 | goto end; | |
157 | } | |
0d63dd19 DG |
158 | } |
159 | ||
160 | /* Check for address */ | |
49d4e302 JRJ |
161 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
162 | if (match > 0) { | |
9d035200 | 163 | if (*s_hex == '\0') { |
8ff0bbd0 | 164 | ERR("Invalid probe address %s", s_hex); |
49d4e302 | 165 | ret = CMD_ERROR; |
8f0d098b | 166 | goto end; |
0d63dd19 | 167 | } |
8ff0bbd0 | 168 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 169 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
170 | ev->attr.probe.offset = 0; |
171 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 172 | goto end; |
0d63dd19 DG |
173 | } |
174 | ||
175 | /* No match */ | |
49d4e302 | 176 | ret = CMD_ERROR; |
0d63dd19 | 177 | |
8f0d098b | 178 | end: |
0d63dd19 DG |
179 | return ret; |
180 | } | |
181 | ||
dbc478f3 FD |
182 | /* |
183 | * Walk the directories in the PATH environment variable to find the target | |
184 | * binary passed as parameter. | |
185 | * | |
186 | * On success, the full path of the binary is copied in binary_full_path out | |
187 | * parameter. This buffer is allocated by the caller and must be at least | |
188 | * LTTNG_PATH_MAX bytes long. | |
189 | * On failure, returns -1; | |
190 | */ | |
191 | static int walk_command_search_path(const char *binary, char *binary_full_path) | |
192 | { | |
193 | char *tentative_binary_path = NULL; | |
194 | char *command_search_path = NULL; | |
195 | char *curr_search_dir_end = NULL; | |
196 | char *curr_search_dir = NULL; | |
197 | struct stat stat_output; | |
198 | int ret = 0; | |
199 | ||
200 | command_search_path = lttng_secure_getenv("PATH"); | |
201 | if (!command_search_path) { | |
202 | ret = -1; | |
203 | goto end; | |
204 | } | |
205 | ||
206 | /* | |
207 | * Duplicate the $PATH string as the char pointer returned by getenv() should | |
208 | * not be modified. | |
209 | */ | |
210 | command_search_path = strdup(command_search_path); | |
211 | if (!command_search_path) { | |
212 | ret = -1; | |
213 | goto end; | |
214 | } | |
215 | ||
216 | /* | |
217 | * This char array is used to concatenate path to binary to look for | |
218 | * the binary. | |
219 | */ | |
220 | tentative_binary_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
221 | if (!tentative_binary_path) { | |
222 | ret = -1; | |
223 | goto alloc_error; | |
224 | } | |
225 | ||
226 | curr_search_dir = command_search_path; | |
227 | do { | |
228 | /* | |
229 | * Split on ':'. The return value of this call points to the | |
230 | * matching character. | |
231 | */ | |
232 | curr_search_dir_end = strchr(curr_search_dir, ':'); | |
233 | if (curr_search_dir_end != NULL) { | |
234 | /* | |
235 | * Add a NULL byte to the end of the first token so it | |
236 | * can be used as a string. | |
237 | */ | |
238 | curr_search_dir_end[0] = '\0'; | |
239 | } | |
240 | ||
241 | /* Empty the tentative path */ | |
242 | memset(tentative_binary_path, 0, LTTNG_PATH_MAX * sizeof(char)); | |
243 | ||
244 | /* | |
245 | * Build the tentative path to the binary using the current | |
246 | * search directory and the name of the binary. | |
247 | */ | |
248 | ret = snprintf(tentative_binary_path, LTTNG_PATH_MAX, "%s/%s", | |
249 | curr_search_dir, binary); | |
250 | if (ret < 0) { | |
251 | goto free_binary_path; | |
252 | } | |
253 | if (ret < LTTNG_PATH_MAX) { | |
254 | /* | |
255 | * Use STAT(2) to see if the file exists. | |
256 | */ | |
257 | ret = stat(tentative_binary_path, &stat_output); | |
258 | if (ret == 0) { | |
259 | /* | |
260 | * Verify that it is a regular file or a | |
261 | * symlink and not a special file (e.g. | |
262 | * device). | |
263 | */ | |
264 | if (S_ISREG(stat_output.st_mode) | |
265 | || S_ISLNK(stat_output.st_mode)) { | |
266 | /* | |
267 | * Found a match, set the out parameter | |
268 | * and return success. | |
269 | */ | |
270 | ret = lttng_strncpy(binary_full_path, | |
271 | tentative_binary_path, | |
272 | LTTNG_PATH_MAX); | |
273 | if (ret == -1) { | |
274 | ERR("Source path does not fit " | |
275 | "in destination buffer."); | |
276 | } | |
277 | goto free_binary_path; | |
278 | } | |
279 | } | |
280 | } | |
281 | /* Go to the next entry in the $PATH variable. */ | |
282 | curr_search_dir = curr_search_dir_end + 1; | |
283 | } while (curr_search_dir_end != NULL); | |
284 | ||
285 | free_binary_path: | |
286 | free(tentative_binary_path); | |
287 | alloc_error: | |
288 | free(command_search_path); | |
289 | end: | |
290 | return ret; | |
291 | } | |
292 | ||
36aa2f64 FD |
293 | /* |
294 | * Check if the symbol field passed by the user is in fact an address or an | |
295 | * offset from a symbol. Those two instrumentation types are not supported yet. | |
296 | * It's expected to be a common mistake because of the existing --probe option | |
297 | * that does support these formats. | |
298 | * | |
299 | * Here are examples of these unsupported formats for the --userspace-probe | |
300 | * option: | |
301 | * elf:/path/to/binary:0x400430 | |
302 | * elf:/path/to/binary:4194364 | |
303 | * elf:/path/to/binary:my_symbol+0x323 | |
304 | * elf:/path/to/binary:my_symbol+43 | |
305 | */ | |
306 | static int warn_userspace_probe_syntax(const char *symbol) | |
307 | { | |
308 | unsigned long addr = 0; | |
309 | size_t offset = 0; | |
310 | int ret; | |
311 | ||
312 | /* Check if the symbol field is an hex address. */ | |
313 | ret = sscanf(symbol, "0x%lx", &addr); | |
314 | if (ret > 0) { | |
315 | /* If there is a match, print a warning and return an error. */ | |
316 | ERR("Userspace probe on address not supported yet."); | |
317 | ret = CMD_UNSUPPORTED; | |
318 | goto error; | |
319 | } | |
320 | ||
321 | /* Check if the symbol field is an decimal address. */ | |
322 | ret = sscanf(symbol, "%lu", &addr); | |
323 | if (ret > 0) { | |
324 | /* If there is a match, print a warning and return an error. */ | |
325 | ERR("Userspace probe on address not supported yet."); | |
326 | ret = CMD_UNSUPPORTED; | |
327 | goto error; | |
328 | } | |
329 | ||
330 | /* Check if the symbol field is symbol+hex_offset. */ | |
331 | ret = sscanf(symbol, "%*[^+]+0x%lx", &offset); | |
332 | if (ret > 0) { | |
333 | /* If there is a match, print a warning and return an error. */ | |
334 | ERR("Userspace probe on symbol+offset not supported yet."); | |
335 | ret = CMD_UNSUPPORTED; | |
336 | goto error; | |
337 | } | |
338 | ||
339 | /* Check if the symbol field is symbol+decimal_offset. */ | |
340 | ret = sscanf(symbol, "%*[^+]+%lu", &offset); | |
341 | if (ret > 0) { | |
342 | /* If there is a match, print a warning and return an error. */ | |
343 | ERR("Userspace probe on symbol+offset not supported yet."); | |
344 | ret = CMD_UNSUPPORTED; | |
345 | goto error; | |
346 | } | |
347 | ||
348 | ret = 0; | |
349 | ||
350 | error: | |
351 | return ret; | |
352 | } | |
353 | ||
dcabc190 FD |
354 | /* |
355 | * Parse userspace probe options | |
356 | * Set the userspace probe fields in the lttng_event struct and set the | |
357 | * target_path to the path to the binary. | |
358 | */ | |
359 | static int parse_userspace_probe_opts(struct lttng_event *ev, char *opt) | |
360 | { | |
361 | int ret = CMD_SUCCESS; | |
362 | int num_token; | |
363 | char **tokens; | |
364 | char *target_path = NULL; | |
365 | char *unescaped_target_path = NULL; | |
366 | char *real_target_path = NULL; | |
367 | char *symbol_name = NULL, *probe_name = NULL, *provider_name = NULL; | |
368 | struct lttng_userspace_probe_location *probe_location = NULL; | |
369 | struct lttng_userspace_probe_location_lookup_method *lookup_method = | |
370 | NULL; | |
371 | ||
372 | if (opt == NULL) { | |
373 | ret = CMD_ERROR; | |
374 | goto end; | |
375 | } | |
376 | ||
ebbcac93 FD |
377 | switch (ev->type) { |
378 | case LTTNG_EVENT_USERSPACE_PROBE: | |
379 | break; | |
380 | default: | |
381 | assert(0); | |
382 | } | |
383 | ||
dcabc190 FD |
384 | /* |
385 | * userspace probe fields are separated by ':'. | |
386 | */ | |
387 | tokens = strutils_split(opt, ':', 1); | |
388 | num_token = strutils_array_of_strings_len(tokens); | |
389 | ||
390 | /* | |
391 | * Early sanity check that the number of parameter is between 2 and 4 | |
392 | * inclusively. | |
393 | * elf:PATH:SYMBOL | |
394 | * std:PATH:PROVIDER_NAME:PROBE_NAME | |
395 | * PATH:SYMBOL (same behavior as ELF) | |
396 | */ | |
397 | if (num_token < 2 || num_token > 4) { | |
398 | ret = CMD_ERROR; | |
399 | goto end_string; | |
400 | } | |
401 | ||
402 | /* | |
403 | * Looking up the first parameter will tell the technique to use to | |
404 | * interpret the userspace probe/function description. | |
405 | */ | |
406 | switch (num_token) { | |
407 | case 2: | |
408 | /* When the probe type is omitted we assume ELF for now. */ | |
409 | case 3: | |
410 | if (num_token == 3 && strcmp(tokens[0], "elf") == 0) { | |
411 | target_path = tokens[1]; | |
412 | symbol_name = tokens[2]; | |
413 | } else if (num_token == 2) { | |
414 | target_path = tokens[0]; | |
415 | symbol_name = tokens[1]; | |
416 | } else { | |
417 | ret = CMD_ERROR; | |
418 | goto end_string; | |
419 | } | |
420 | lookup_method = | |
421 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
422 | if (!lookup_method) { | |
423 | WARN("Failed to create ELF lookup method"); | |
424 | ret = CMD_ERROR; | |
425 | goto end_string; | |
426 | } | |
427 | break; | |
428 | case 4: | |
429 | if (strcmp(tokens[0], "sdt") == 0) { | |
430 | target_path = tokens[1]; | |
431 | provider_name = tokens[2]; | |
432 | probe_name = tokens[3]; | |
433 | } else { | |
434 | ret = CMD_ERROR; | |
435 | goto end_string; | |
436 | } | |
437 | lookup_method = | |
438 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
439 | if (!lookup_method) { | |
440 | WARN("Failed to create ELF lookup method"); | |
441 | ret = CMD_ERROR; | |
442 | goto end_string; | |
443 | } | |
444 | break; | |
445 | default: | |
446 | ret = CMD_ERROR; | |
447 | goto end_string; | |
448 | } | |
449 | ||
450 | /* strutils_unescape_string allocates a new char *. */ | |
451 | unescaped_target_path = strutils_unescape_string(target_path, 0); | |
452 | if (!unescaped_target_path) { | |
36aa2f64 | 453 | ret = CMD_ERROR; |
ebbcac93 | 454 | goto end_destroy_lookup_method; |
dcabc190 FD |
455 | } |
456 | ||
457 | /* | |
458 | * If there is not forward slash in the path. Walk the $PATH else | |
459 | * expand. | |
460 | */ | |
ebbcac93 | 461 | if (strchr(unescaped_target_path, '/') == NULL) { |
dcabc190 FD |
462 | /* Walk the $PATH variable to find the targeted binary. */ |
463 | real_target_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
464 | if (!real_target_path) { | |
465 | PERROR("Error allocating path buffer"); | |
466 | ret = CMD_ERROR; | |
ebbcac93 | 467 | goto end_destroy_lookup_method; |
dcabc190 | 468 | } |
ebbcac93 | 469 | ret = walk_command_search_path(unescaped_target_path, real_target_path); |
dcabc190 FD |
470 | if (ret) { |
471 | ERR("Binary not found."); | |
472 | ret = CMD_ERROR; | |
ebbcac93 | 473 | goto end_destroy_lookup_method; |
dcabc190 FD |
474 | } |
475 | } else { | |
476 | /* | |
477 | * Expand references to `/./` and `/../`. This function does not check | |
ebbcac93 FD |
478 | * if the file exists. This call returns an allocated buffer on |
479 | * success. | |
dcabc190 | 480 | */ |
ebbcac93 | 481 | real_target_path = utils_expand_path_keep_symlink(unescaped_target_path); |
dcabc190 FD |
482 | if (!real_target_path) { |
483 | ERR("Error expanding the path to binary."); | |
484 | ret = CMD_ERROR; | |
ebbcac93 | 485 | goto end_destroy_lookup_method; |
dcabc190 FD |
486 | } |
487 | ||
488 | /* | |
489 | * Check if the file exists using access(2). If it does not, walk the | |
490 | * $PATH. | |
491 | */ | |
492 | ret = access(real_target_path, F_OK); | |
493 | if (ret) { | |
bb77204a | 494 | ERR("Cannot find binary at path: %s.", real_target_path); |
dcabc190 | 495 | ret = CMD_ERROR; |
ebbcac93 | 496 | goto end_destroy_lookup_method; |
dcabc190 FD |
497 | } |
498 | } | |
499 | ||
500 | switch (lttng_userspace_probe_location_lookup_method_get_type(lookup_method)) { | |
501 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
36aa2f64 FD |
502 | /* |
503 | * Check for common mistakes in userspace probe description syntax. | |
504 | */ | |
505 | ret = warn_userspace_probe_syntax(symbol_name); | |
506 | if (ret) { | |
507 | goto end_destroy_lookup_method; | |
508 | } | |
509 | ||
dcabc190 FD |
510 | probe_location = lttng_userspace_probe_location_function_create( |
511 | real_target_path, symbol_name, lookup_method); | |
512 | if (!probe_location) { | |
513 | WARN("Failed to create function probe location"); | |
514 | ret = CMD_ERROR; | |
515 | goto end_destroy_lookup_method; | |
516 | } | |
517 | ||
518 | /* Ownership transferred to probe_location. */ | |
519 | lookup_method = NULL; | |
520 | ||
521 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
522 | if (ret) { | |
523 | WARN("Failed to set probe location on event"); | |
524 | ret = CMD_ERROR; | |
525 | goto end_destroy_location; | |
526 | } | |
527 | break; | |
528 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
529 | probe_location = lttng_userspace_probe_location_tracepoint_create( | |
530 | real_target_path, provider_name, probe_name, lookup_method); | |
531 | if (!probe_location) { | |
532 | WARN("Failed to create function probe location"); | |
533 | ret = CMD_ERROR; | |
534 | goto end_destroy_lookup_method; | |
535 | } | |
536 | ||
537 | /* Ownership transferred to probe_location. */ | |
538 | lookup_method = NULL; | |
539 | ||
540 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
541 | if (ret) { | |
542 | WARN("Failed to set probe location on event"); | |
543 | ret = CMD_ERROR; | |
544 | goto end_destroy_location; | |
545 | } | |
546 | break; | |
547 | default: | |
548 | ret = CMD_ERROR; | |
ebbcac93 | 549 | goto end_destroy_lookup_method; |
dcabc190 FD |
550 | } |
551 | ||
ebbcac93 FD |
552 | /* Successful parsing, now clean up everything and return. */ |
553 | goto end_string; | |
dcabc190 FD |
554 | |
555 | end_destroy_location: | |
556 | lttng_userspace_probe_location_destroy(probe_location); | |
557 | end_destroy_lookup_method: | |
558 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
ebbcac93 FD |
559 | end_string: |
560 | strutils_free_null_terminated_array_of_strings(tokens); | |
dcabc190 | 561 | /* |
ebbcac93 FD |
562 | * Freeing both char * here makes the error handling simplier. free() |
563 | * performs not action if the pointer is NULL. | |
dcabc190 FD |
564 | */ |
565 | free(real_target_path); | |
dcabc190 | 566 | free(unescaped_target_path); |
dcabc190 FD |
567 | end: |
568 | return ret; | |
569 | } | |
570 | ||
5cdb6027 DG |
571 | /* |
572 | * Maps LOG4j loglevel from string to value | |
573 | */ | |
574 | static int loglevel_log4j_str_to_value(const char *inputstr) | |
575 | { | |
576 | int i = 0; | |
577 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
578 | ||
3712b110 JG |
579 | if (!inputstr || strlen(inputstr) == 0) { |
580 | return -1; | |
581 | } | |
582 | ||
5cdb6027 DG |
583 | /* |
584 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
585 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
586 | */ | |
587 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
588 | str[i] = toupper(inputstr[i]); | |
589 | i++; | |
590 | } | |
591 | str[i] = '\0'; | |
592 | ||
593 | if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) { | |
594 | return LTTNG_LOGLEVEL_LOG4J_OFF; | |
595 | } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) { | |
596 | return LTTNG_LOGLEVEL_LOG4J_FATAL; | |
597 | } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) { | |
598 | return LTTNG_LOGLEVEL_LOG4J_ERROR; | |
599 | } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) { | |
600 | return LTTNG_LOGLEVEL_LOG4J_WARN; | |
601 | } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) { | |
602 | return LTTNG_LOGLEVEL_LOG4J_INFO; | |
603 | } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) { | |
604 | return LTTNG_LOGLEVEL_LOG4J_DEBUG; | |
605 | } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) { | |
606 | return LTTNG_LOGLEVEL_LOG4J_TRACE; | |
607 | } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) { | |
608 | return LTTNG_LOGLEVEL_LOG4J_ALL; | |
609 | } else { | |
610 | return -1; | |
611 | } | |
612 | } | |
613 | ||
b2064f54 DG |
614 | /* |
615 | * Maps JUL loglevel from string to value | |
616 | */ | |
617 | static int loglevel_jul_str_to_value(const char *inputstr) | |
618 | { | |
619 | int i = 0; | |
620 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
621 | ||
3712b110 JG |
622 | if (!inputstr || strlen(inputstr) == 0) { |
623 | return -1; | |
624 | } | |
625 | ||
b2064f54 DG |
626 | /* |
627 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
628 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
629 | */ | |
630 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
631 | str[i] = toupper(inputstr[i]); | |
632 | i++; | |
633 | } | |
634 | str[i] = '\0'; | |
635 | ||
636 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { | |
637 | return LTTNG_LOGLEVEL_JUL_OFF; | |
638 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { | |
639 | return LTTNG_LOGLEVEL_JUL_SEVERE; | |
640 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { | |
641 | return LTTNG_LOGLEVEL_JUL_WARNING; | |
642 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { | |
643 | return LTTNG_LOGLEVEL_JUL_INFO; | |
644 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { | |
645 | return LTTNG_LOGLEVEL_JUL_CONFIG; | |
646 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { | |
647 | return LTTNG_LOGLEVEL_JUL_FINE; | |
648 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { | |
649 | return LTTNG_LOGLEVEL_JUL_FINER; | |
650 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { | |
651 | return LTTNG_LOGLEVEL_JUL_FINEST; | |
652 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { | |
653 | return LTTNG_LOGLEVEL_JUL_ALL; | |
654 | } else { | |
655 | return -1; | |
656 | } | |
657 | } | |
658 | ||
0e115563 DG |
659 | /* |
660 | * Maps Python loglevel from string to value | |
661 | */ | |
662 | static int loglevel_python_str_to_value(const char *inputstr) | |
663 | { | |
664 | int i = 0; | |
665 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
666 | ||
3712b110 JG |
667 | if (!inputstr || strlen(inputstr) == 0) { |
668 | return -1; | |
669 | } | |
670 | ||
0e115563 DG |
671 | /* |
672 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
673 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
674 | */ | |
675 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
676 | str[i] = toupper(inputstr[i]); | |
677 | i++; | |
678 | } | |
679 | str[i] = '\0'; | |
680 | ||
681 | if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) { | |
682 | return LTTNG_LOGLEVEL_PYTHON_CRITICAL; | |
683 | } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) { | |
684 | return LTTNG_LOGLEVEL_PYTHON_ERROR; | |
685 | } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) { | |
686 | return LTTNG_LOGLEVEL_PYTHON_WARNING; | |
687 | } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) { | |
688 | return LTTNG_LOGLEVEL_PYTHON_INFO; | |
689 | } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) { | |
690 | return LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
691 | } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) { | |
692 | return LTTNG_LOGLEVEL_PYTHON_NOTSET; | |
693 | } else { | |
694 | return -1; | |
695 | } | |
696 | } | |
697 | ||
8005f29a | 698 | /* |
0c8477c8 | 699 | * Maps loglevel from string to value |
8005f29a MD |
700 | */ |
701 | static | |
46839cc2 | 702 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 703 | { |
46839cc2 MD |
704 | int i = 0; |
705 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
706 | ||
3712b110 JG |
707 | if (!inputstr || strlen(inputstr) == 0) { |
708 | return -1; | |
709 | } | |
710 | ||
e051e07c DG |
711 | /* |
712 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
713 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
714 | */ | |
715 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
716 | str[i] = toupper(inputstr[i]); |
717 | i++; | |
718 | } | |
719 | str[i] = '\0'; | |
720 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
721 | return LTTNG_LOGLEVEL_EMERG; | |
722 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
723 | return LTTNG_LOGLEVEL_ALERT; | |
724 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
725 | return LTTNG_LOGLEVEL_CRIT; | |
726 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
727 | return LTTNG_LOGLEVEL_ERR; | |
728 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
729 | return LTTNG_LOGLEVEL_WARNING; | |
730 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
731 | return LTTNG_LOGLEVEL_NOTICE; | |
732 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
733 | return LTTNG_LOGLEVEL_INFO; | |
734 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
735 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
736 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
737 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
738 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
739 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
740 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
741 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
742 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
743 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
744 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
745 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
746 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
747 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
748 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
749 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
750 | } else { |
751 | return -1; | |
752 | } | |
753 | } | |
754 | ||
85076754 MD |
755 | static |
756 | const char *print_channel_name(const char *name) | |
757 | { | |
758 | return name ? : DEFAULT_CHANNEL_NAME; | |
759 | } | |
760 | ||
761 | static | |
762 | const char *print_raw_channel_name(const char *name) | |
763 | { | |
764 | return name ? : "<default>"; | |
765 | } | |
766 | ||
89476427 JRJ |
767 | /* |
768 | * Mi print exlcusion list | |
769 | */ | |
770 | static | |
9f449915 | 771 | int mi_print_exclusion(char **names) |
89476427 JRJ |
772 | { |
773 | int i, ret; | |
9f449915 | 774 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
775 | |
776 | assert(writer); | |
777 | ||
778 | if (count == 0) { | |
779 | ret = 0; | |
780 | goto end; | |
781 | } | |
782 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
783 | if (ret) { | |
784 | goto end; | |
785 | } | |
786 | ||
787 | for (i = 0; i < count; i++) { | |
788 | ret = mi_lttng_writer_write_element_string(writer, | |
789 | config_element_exclusion, names[i]); | |
790 | if (ret) { | |
791 | goto end; | |
792 | } | |
793 | } | |
794 | ||
795 | /* Close exclusions element */ | |
796 | ret = mi_lttng_writer_close_element(writer); | |
797 | ||
798 | end: | |
799 | return ret; | |
800 | } | |
801 | ||
9c48cab3 JI |
802 | /* |
803 | * Return allocated string for pretty-printing exclusion names. | |
804 | */ | |
805 | static | |
9f449915 | 806 | char *print_exclusions(char **names) |
9c48cab3 JI |
807 | { |
808 | int length = 0; | |
809 | int i; | |
810 | const char *preamble = " excluding "; | |
811 | char *ret; | |
9f449915 | 812 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
813 | |
814 | if (count == 0) { | |
815 | return strdup(""); | |
816 | } | |
817 | ||
818 | /* calculate total required length */ | |
819 | for (i = 0; i < count; i++) { | |
9f449915 | 820 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
821 | } |
822 | ||
823 | /* add length of preamble + one for NUL - one for last (missing) comma */ | |
824 | length += strlen(preamble); | |
9f449915 | 825 | ret = zmalloc(length + 1); |
fd591b18 MD |
826 | if (!ret) { |
827 | return NULL; | |
828 | } | |
9c48cab3 JI |
829 | strncpy(ret, preamble, length); |
830 | for (i = 0; i < count; i++) { | |
9f449915 | 831 | strcat(ret, "\""); |
9c48cab3 | 832 | strcat(ret, names[i]); |
9f449915 | 833 | strcat(ret, "\""); |
9c48cab3 | 834 | if (i != count - 1) { |
9f449915 | 835 | strcat(ret, ", "); |
9c48cab3 JI |
836 | } |
837 | } | |
89476427 | 838 | |
9c48cab3 JI |
839 | return ret; |
840 | } | |
841 | ||
748bde76 | 842 | static |
9f449915 | 843 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 844 | { |
9f449915 PP |
845 | bool warn = false; |
846 | int ret = 0; | |
847 | const char *e = event_name; | |
848 | const char *x = exclusion; | |
849 | ||
850 | /* Scan both the excluder and the event letter by letter */ | |
851 | while (true) { | |
852 | if (*e == '\\') { | |
853 | if (*x != *e) { | |
854 | warn = true; | |
855 | goto end; | |
856 | } | |
748bde76 | 857 | |
9f449915 PP |
858 | e++; |
859 | x++; | |
860 | goto cmp_chars; | |
861 | } | |
862 | ||
863 | if (*x == '*') { | |
864 | /* Event is a subset of the excluder */ | |
865 | ERR("Event %s: %s excludes all events from %s", | |
866 | event_name, exclusion, event_name); | |
867 | goto error; | |
868 | } | |
869 | ||
870 | if (*e == '*') { | |
871 | /* | |
872 | * Reached the end of the event name before the | |
873 | * end of the exclusion: this is valid. | |
874 | */ | |
875 | goto end; | |
876 | } | |
877 | ||
878 | cmp_chars: | |
879 | if (*x != *e) { | |
880 | warn = true; | |
881 | break; | |
882 | } | |
883 | ||
884 | x++; | |
885 | e++; | |
748bde76 JI |
886 | } |
887 | ||
9f449915 | 888 | goto end; |
748bde76 | 889 | |
9f449915 PP |
890 | error: |
891 | ret = -1; | |
748bde76 | 892 | |
9f449915 PP |
893 | end: |
894 | if (warn) { | |
895 | WARN("Event %s: %s does not exclude any events from %s", | |
896 | event_name, exclusion, event_name); | |
897 | } | |
748bde76 | 898 | |
9f449915 PP |
899 | return ret; |
900 | } | |
901 | ||
9f449915 PP |
902 | static |
903 | int create_exclusion_list_and_validate(const char *event_name, | |
904 | const char *exclusions_arg, | |
905 | char ***exclusion_list) | |
906 | { | |
907 | int ret = 0; | |
908 | char **exclusions = NULL; | |
909 | ||
910 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
911 | if (!strutils_is_star_glob_pattern(event_name)) { | |
912 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
913 | event_name); | |
914 | goto error; | |
915 | } | |
916 | ||
917 | /* Split exclusions. */ | |
918 | exclusions = strutils_split(exclusions_arg, ',', true); | |
919 | if (!exclusions) { | |
920 | goto error; | |
921 | } | |
922 | ||
923 | /* | |
924 | * If the event name is a star-at-end only globbing pattern, | |
925 | * then we can validate the individual exclusions. Otherwise | |
926 | * all exclusions are passed to the session daemon. | |
927 | */ | |
928 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
929 | char * const *exclusion; | |
930 | ||
931 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
932 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
933 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 934 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 935 | if (ret) { |
5ef79758 MD |
936 | goto error; |
937 | } | |
748bde76 | 938 | } |
748bde76 JI |
939 | } |
940 | } | |
9f449915 PP |
941 | |
942 | *exclusion_list = exclusions; | |
943 | ||
748bde76 | 944 | goto end; |
9f449915 | 945 | |
748bde76 | 946 | error: |
9f449915 PP |
947 | ret = -1; |
948 | strutils_free_null_terminated_array_of_strings(exclusions); | |
949 | ||
748bde76 | 950 | end: |
748bde76 JI |
951 | return ret; |
952 | } | |
502bbe89 | 953 | |
9f449915 PP |
954 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
955 | int *warn) | |
502bbe89 | 956 | { |
9f449915 | 957 | char * const *exclusion; |
502bbe89 | 958 | |
9f449915 PP |
959 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
960 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 961 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 962 | *exclusion); |
502bbe89 PP |
963 | *warn = 1; |
964 | } | |
965 | } | |
966 | } | |
967 | ||
f3ed775e | 968 | /* |
6181537c | 969 | * Enabling event using the lttng API. |
89476427 | 970 | * Note: in case of error only the last error code will be return. |
f3ed775e | 971 | */ |
cd80958d | 972 | static int enable_events(char *session_name) |
f3ed775e | 973 | { |
89476427 JRJ |
974 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
975 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 976 | char *event_name, *channel_name = NULL; |
91744e14 | 977 | struct lttng_event *ev; |
7d29a247 | 978 | struct lttng_domain dom; |
7ed70bc9 | 979 | char **exclusion_list = NULL; |
f3ed775e | 980 | |
441c16a7 MD |
981 | memset(&dom, 0, sizeof(dom)); |
982 | ||
91744e14 FD |
983 | ev = lttng_event_create(); |
984 | if (!ev) { | |
985 | ret = CMD_ERROR; | |
986 | goto error; | |
987 | } | |
988 | ||
53a80697 | 989 | if (opt_kernel) { |
67b58630 JG |
990 | if (opt_loglevel) { |
991 | WARN("Kernel loglevels are not supported."); | |
992 | } | |
53a80697 MD |
993 | } |
994 | ||
7d29a247 DG |
995 | /* Create lttng domain */ |
996 | if (opt_kernel) { | |
997 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 998 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 999 | } else if (opt_userspace) { |
2bdd86d4 | 1000 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 1001 | /* Default. */ |
8692d4e5 | 1002 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
1003 | } else if (opt_jul) { |
1004 | dom.type = LTTNG_DOMAIN_JUL; | |
1005 | /* Default. */ | |
1006 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
1007 | } else if (opt_log4j) { |
1008 | dom.type = LTTNG_DOMAIN_LOG4J; | |
1009 | /* Default. */ | |
1010 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
1011 | } else if (opt_python) { |
1012 | dom.type = LTTNG_DOMAIN_PYTHON; | |
1013 | /* Default. */ | |
1014 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 1015 | } else { |
3ecec76a PP |
1016 | /* Checked by the caller. */ |
1017 | assert(0); | |
2bdd86d4 | 1018 | } |
7d29a247 | 1019 | |
8b08c525 AB |
1020 | if (opt_exclude) { |
1021 | switch (dom.type) { | |
1022 | case LTTNG_DOMAIN_KERNEL: | |
1023 | case LTTNG_DOMAIN_JUL: | |
1024 | case LTTNG_DOMAIN_LOG4J: | |
1025 | case LTTNG_DOMAIN_PYTHON: | |
1026 | ERR("Event name exclusions are not yet implemented for %s events", | |
1027 | get_domain_str(dom.type)); | |
1028 | ret = CMD_ERROR; | |
1029 | goto error; | |
1030 | case LTTNG_DOMAIN_UST: | |
1031 | /* Exclusions supported */ | |
1032 | break; | |
1033 | default: | |
1034 | assert(0); | |
1035 | } | |
d5dd17fd JI |
1036 | } |
1037 | ||
4fd2697f FD |
1038 | /* |
1039 | * Adding a filter to a probe, function or userspace-probe would be | |
1040 | * denied by the kernel tracer as it's not supported at the moment. We | |
1041 | * do an early check here to warn the user. | |
1042 | */ | |
1043 | if (opt_filter && opt_kernel) { | |
1044 | switch (opt_event_type) { | |
1045 | case LTTNG_EVENT_ALL: | |
1046 | case LTTNG_EVENT_TRACEPOINT: | |
1047 | case LTTNG_EVENT_SYSCALL: | |
1048 | break; | |
1049 | case LTTNG_EVENT_PROBE: | |
1050 | case LTTNG_EVENT_USERSPACE_PROBE: | |
1051 | case LTTNG_EVENT_FUNCTION: | |
1052 | ERR("Filter expressions are not supported for %s events", | |
1053 | get_event_type_str(opt_event_type)); | |
1054 | ret = CMD_ERROR; | |
1055 | goto error; | |
1056 | default: | |
1057 | ret = CMD_UNDEFINED; | |
1058 | goto error; | |
1059 | } | |
1060 | } | |
1061 | ||
85076754 | 1062 | channel_name = opt_channel_name; |
ae856491 | 1063 | |
cd80958d DG |
1064 | handle = lttng_create_handle(session_name, &dom); |
1065 | if (handle == NULL) { | |
1066 | ret = -1; | |
1067 | goto error; | |
1068 | } | |
1aef21b6 | 1069 | |
89476427 JRJ |
1070 | /* Prepare Mi */ |
1071 | if (lttng_opt_mi) { | |
1072 | /* Open a events element */ | |
1073 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
1074 | if (ret) { | |
1075 | ret = CMD_ERROR; | |
1076 | goto error; | |
1077 | } | |
1078 | } | |
1079 | ||
cd80958d | 1080 | if (opt_enable_all) { |
8c9ae521 | 1081 | /* Default setup for enable all */ |
75e8c5ab | 1082 | if (opt_kernel) { |
91744e14 FD |
1083 | ev->type = opt_event_type; |
1084 | strcpy(ev->name, "*"); | |
300b8fd5 | 1085 | /* kernel loglevels not implemented */ |
91744e14 | 1086 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 1087 | } else { |
91744e14 FD |
1088 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1089 | strcpy(ev->name, "*"); | |
1090 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 1091 | if (opt_loglevel) { |
0e115563 | 1092 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1093 | if (opt_userspace) { |
91744e14 | 1094 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
b2064f54 | 1095 | } else if (opt_jul) { |
91744e14 | 1096 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1097 | } else if (opt_log4j) { |
91744e14 | 1098 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1099 | } else if (opt_python) { |
91744e14 | 1100 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
b2064f54 | 1101 | } |
91744e14 | 1102 | if (ev->loglevel == -1) { |
300b8fd5 | 1103 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1104 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
1105 | goto error; |
1106 | } | |
22e25b71 | 1107 | } else { |
0e115563 | 1108 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1109 | if (opt_userspace) { |
91744e14 | 1110 | ev->loglevel = -1; |
34aa3685 | 1111 | } else if (opt_jul) { |
91744e14 | 1112 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 1113 | } else if (opt_log4j) { |
91744e14 | 1114 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1115 | } else if (opt_python) { |
91744e14 | 1116 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 1117 | } |
300b8fd5 | 1118 | } |
75e8c5ab | 1119 | } |
8c9ae521 | 1120 | |
7ed70bc9 | 1121 | if (opt_exclude) { |
9f449915 PP |
1122 | ret = create_exclusion_list_and_validate("*", |
1123 | opt_exclude, &exclusion_list); | |
1124 | if (ret) { | |
1125 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1126 | goto error; |
1127 | } | |
502bbe89 | 1128 | |
91744e14 | 1129 | ev->exclusion = 1; |
502bbe89 | 1130 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 1131 | &warn); |
7ed70bc9 | 1132 | } |
025faf73 | 1133 | if (!opt_filter) { |
7ed70bc9 | 1134 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1135 | ev, channel_name, |
7ed70bc9 | 1136 | NULL, |
9f449915 PP |
1137 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
1138 | exclusion_list); | |
025faf73 DG |
1139 | if (ret < 0) { |
1140 | switch (-ret) { | |
1141 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
1142 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 1143 | print_channel_name(channel_name), session_name); |
89476427 | 1144 | warn = 1; |
025faf73 | 1145 | break; |
45d5d421 CB |
1146 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1147 | { | |
1148 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1149 | ERR("Events: %s (channel %s, session %s)", | |
1150 | msg, | |
1151 | print_channel_name(channel_name), | |
1152 | session_name); | |
1153 | error = 1; | |
1154 | break; | |
1155 | } | |
025faf73 DG |
1156 | default: |
1157 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
1158 | lttng_strerror(ret), |
1159 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
1160 | ? print_raw_channel_name(channel_name) | |
1161 | : print_channel_name(channel_name), | |
1162 | session_name); | |
89476427 | 1163 | error = 1; |
025faf73 DG |
1164 | break; |
1165 | } | |
1166 | goto end; | |
42224349 | 1167 | } |
8c9ae521 | 1168 | |
025faf73 DG |
1169 | switch (opt_event_type) { |
1170 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 1171 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1172 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1173 | |
1174 | if (!exclusion_string) { | |
1175 | PERROR("Cannot allocate exclusion_string"); | |
1176 | error = 1; | |
1177 | goto end; | |
1178 | } | |
9c48cab3 | 1179 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1180 | get_domain_str(dom.type), |
9c48cab3 | 1181 | exclusion_string, |
85076754 | 1182 | print_channel_name(channel_name), |
025faf73 | 1183 | opt_loglevel); |
9c48cab3 | 1184 | free(exclusion_string); |
025faf73 | 1185 | } else { |
9f449915 | 1186 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1187 | |
1188 | if (!exclusion_string) { | |
1189 | PERROR("Cannot allocate exclusion_string"); | |
1190 | error = 1; | |
1191 | goto end; | |
1192 | } | |
9c48cab3 | 1193 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 1194 | get_domain_str(dom.type), |
9c48cab3 | 1195 | exclusion_string, |
85076754 | 1196 | print_channel_name(channel_name)); |
9c48cab3 | 1197 | free(exclusion_string); |
025faf73 DG |
1198 | } |
1199 | break; | |
1200 | case LTTNG_EVENT_SYSCALL: | |
1201 | if (opt_kernel) { | |
6e911cad MD |
1202 | MSG("All %s system calls are enabled in channel %s", |
1203 | get_domain_str(dom.type), | |
85076754 | 1204 | print_channel_name(channel_name)); |
025faf73 DG |
1205 | } |
1206 | break; | |
1207 | case LTTNG_EVENT_ALL: | |
67b58630 | 1208 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1209 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1210 | |
1211 | if (!exclusion_string) { | |
1212 | PERROR("Cannot allocate exclusion_string"); | |
1213 | error = 1; | |
1214 | goto end; | |
1215 | } | |
9c48cab3 | 1216 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1217 | get_domain_str(dom.type), |
9c48cab3 | 1218 | exclusion_string, |
85076754 | 1219 | print_channel_name(channel_name), |
025faf73 | 1220 | opt_loglevel); |
9c48cab3 | 1221 | free(exclusion_string); |
025faf73 | 1222 | } else { |
9f449915 | 1223 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1224 | |
1225 | if (!exclusion_string) { | |
1226 | PERROR("Cannot allocate exclusion_string"); | |
1227 | error = 1; | |
1228 | goto end; | |
1229 | } | |
9c48cab3 | 1230 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 1231 | get_domain_str(dom.type), |
9c48cab3 | 1232 | exclusion_string, |
85076754 | 1233 | print_channel_name(channel_name)); |
9c48cab3 | 1234 | free(exclusion_string); |
025faf73 DG |
1235 | } |
1236 | break; | |
1237 | default: | |
1238 | /* | |
1239 | * We should not be here since lttng_enable_event should have | |
1240 | * failed on the event type. | |
1241 | */ | |
1242 | goto error; | |
57064ada | 1243 | } |
f3ed775e | 1244 | } |
89476427 | 1245 | |
025faf73 | 1246 | if (opt_filter) { |
91744e14 | 1247 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1248 | opt_filter, |
1249 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1250 | exclusion_list); | |
89476427 JRJ |
1251 | if (command_ret < 0) { |
1252 | switch (-command_ret) { | |
16363652 | 1253 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 1254 | WARN("Filter on all events is already enabled" |
16363652 | 1255 | " (channel %s, session %s)", |
85076754 | 1256 | print_channel_name(channel_name), session_name); |
89476427 | 1257 | warn = 1; |
16363652 | 1258 | break; |
45d5d421 CB |
1259 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1260 | { | |
1261 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1262 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
1263 | msg, | |
1264 | print_channel_name(channel_name), | |
1265 | session_name, opt_filter); | |
1266 | error = 1; | |
1267 | break; | |
1268 | } | |
16363652 | 1269 | default: |
85076754 | 1270 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
1271 | lttng_strerror(command_ret), |
1272 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1273 | ? print_raw_channel_name(channel_name) |
1274 | : print_channel_name(channel_name), | |
1275 | session_name, opt_filter); | |
89476427 | 1276 | error = 1; |
16363652 DG |
1277 | break; |
1278 | } | |
89476427 | 1279 | error_holder = command_ret; |
16363652 | 1280 | } else { |
91744e14 | 1281 | ev->filter = 1; |
16363652 DG |
1282 | MSG("Filter '%s' successfully set", opt_filter); |
1283 | } | |
1284 | } | |
89476427 JRJ |
1285 | |
1286 | if (lttng_opt_mi) { | |
1287 | /* The wildcard * is used for kernel and ust domain to | |
1288 | * represent ALL. We copy * in event name to force the wildcard use | |
1289 | * for kernel domain | |
1290 | * | |
1291 | * Note: this is strictly for semantic and printing while in | |
1292 | * machine interface mode. | |
1293 | */ | |
91744e14 | 1294 | strcpy(ev->name, "*"); |
89476427 JRJ |
1295 | |
1296 | /* If we reach here the events are enabled */ | |
1297 | if (!error && !warn) { | |
91744e14 | 1298 | ev->enabled = 1; |
89476427 | 1299 | } else { |
91744e14 | 1300 | ev->enabled = 0; |
89476427 JRJ |
1301 | success = 0; |
1302 | } | |
91744e14 | 1303 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1304 | if (ret) { |
1305 | ret = CMD_ERROR; | |
1306 | goto error; | |
1307 | } | |
1308 | ||
1309 | /* print exclusion */ | |
9f449915 | 1310 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1311 | if (ret) { |
1312 | ret = CMD_ERROR; | |
1313 | goto error; | |
1314 | } | |
1315 | ||
1316 | /* Success ? */ | |
1317 | ret = mi_lttng_writer_write_element_bool(writer, | |
1318 | mi_lttng_element_command_success, success); | |
1319 | if (ret) { | |
1320 | ret = CMD_ERROR; | |
1321 | goto error; | |
1322 | } | |
1323 | ||
1324 | /* Close event element */ | |
1325 | ret = mi_lttng_writer_close_element(writer); | |
1326 | if (ret) { | |
1327 | ret = CMD_ERROR; | |
1328 | goto error; | |
1329 | } | |
1330 | } | |
1331 | ||
8c9ae521 | 1332 | goto end; |
f3ed775e DG |
1333 | } |
1334 | ||
1335 | /* Strip event list */ | |
1336 | event_name = strtok(opt_event_list, ","); | |
1337 | while (event_name != NULL) { | |
6181537c | 1338 | /* Copy name and type of the event */ |
91744e14 FD |
1339 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
1340 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
1341 | ev->type = opt_event_type; | |
6181537c | 1342 | |
f3ed775e DG |
1343 | /* Kernel tracer action */ |
1344 | if (opt_kernel) { | |
1345 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
1346 | event_name, |
1347 | print_channel_name(channel_name)); | |
f3ed775e DG |
1348 | |
1349 | switch (opt_event_type) { | |
29c62722 MD |
1350 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
1351 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
1352 | if (strcmp(ev->name, "*")) { |
1353 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
1354 | } |
1355 | break; | |
e6ddca71 | 1356 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 1357 | break; |
7d29a247 | 1358 | case LTTNG_EVENT_PROBE: |
91744e14 | 1359 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 1360 | if (ret) { |
cf0e5467 | 1361 | ERR("Unable to parse probe options"); |
91744e14 | 1362 | ret = CMD_ERROR; |
0d63dd19 DG |
1363 | goto error; |
1364 | } | |
f3ed775e | 1365 | break; |
dcabc190 FD |
1366 | case LTTNG_EVENT_USERSPACE_PROBE: |
1367 | ret = parse_userspace_probe_opts(ev, opt_userspace_probe); | |
1368 | if (ret) { | |
36aa2f64 FD |
1369 | switch (ret) { |
1370 | case CMD_UNSUPPORTED: | |
1371 | /* | |
1372 | * Error message describing | |
1373 | * what is not supported was | |
1374 | * printed in the function. | |
1375 | */ | |
1376 | break; | |
1377 | case CMD_ERROR: | |
1378 | default: | |
1379 | ERR("Unable to parse userspace probe options"); | |
1380 | break; | |
1381 | } | |
dcabc190 FD |
1382 | goto error; |
1383 | } | |
1384 | break; | |
f3ed775e | 1385 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 1386 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 1387 | if (ret) { |
8f0d098b | 1388 | ERR("Unable to parse function probe options"); |
91744e14 | 1389 | ret = CMD_ERROR; |
8f0d098b MD |
1390 | goto error; |
1391 | } | |
1392 | break; | |
a54bd42d | 1393 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 1394 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 1395 | break; |
f3ed775e | 1396 | default: |
1ab1ea0b | 1397 | ret = CMD_UNDEFINED; |
f3ed775e DG |
1398 | goto error; |
1399 | } | |
0cda4f28 | 1400 | |
0cda4f28 | 1401 | /* kernel loglevels not implemented */ |
91744e14 | 1402 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 1403 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 1404 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 1405 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
1406 | |
1407 | switch (opt_event_type) { | |
1408 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
1409 | /* Fall-through */ |
1410 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 1411 | /* Copy name and type of the event */ |
91744e14 FD |
1412 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1413 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1414 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
1415 | break; |
1416 | case LTTNG_EVENT_PROBE: | |
1417 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 1418 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 1419 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 1420 | default: |
cc62c0c0 | 1421 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 1422 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
1423 | goto error; |
1424 | } | |
0cda4f28 | 1425 | |
7ed70bc9 | 1426 | if (opt_exclude) { |
91744e14 | 1427 | ev->exclusion = 1; |
d5dd17fd JI |
1428 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
1429 | ERR("Exclusion option can only be used with tracepoint events"); | |
1430 | ret = CMD_ERROR; | |
1431 | goto error; | |
1432 | } | |
7ed70bc9 | 1433 | /* Free previously allocated items */ |
9f449915 PP |
1434 | strutils_free_null_terminated_array_of_strings( |
1435 | exclusion_list); | |
1436 | exclusion_list = NULL; | |
1437 | ret = create_exclusion_list_and_validate( | |
1438 | event_name, opt_exclude, | |
1439 | &exclusion_list); | |
1440 | if (ret) { | |
1441 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1442 | goto error; |
1443 | } | |
502bbe89 PP |
1444 | |
1445 | warn_on_truncated_exclusion_names( | |
9f449915 | 1446 | exclusion_list, &warn); |
7ed70bc9 JI |
1447 | } |
1448 | ||
91744e14 | 1449 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 1450 | if (opt_loglevel) { |
91744e14 FD |
1451 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
1452 | if (ev->loglevel == -1) { | |
8005f29a | 1453 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1454 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
1455 | goto error; |
1456 | } | |
22e25b71 | 1457 | } else { |
91744e14 | 1458 | ev->loglevel = -1; |
ed7f4083 | 1459 | } |
0e115563 | 1460 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
1461 | if (opt_event_type != LTTNG_EVENT_ALL && |
1462 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 1463 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
1464 | ret = CMD_UNSUPPORTED; |
1465 | goto error; | |
1466 | } | |
b2064f54 | 1467 | |
91744e14 | 1468 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 1469 | if (opt_loglevel) { |
5cdb6027 | 1470 | if (opt_jul) { |
91744e14 | 1471 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1472 | } else if (opt_log4j) { |
91744e14 | 1473 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1474 | } else if (opt_python) { |
91744e14 | 1475 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
5cdb6027 | 1476 | } |
91744e14 | 1477 | if (ev->loglevel == -1) { |
b2064f54 DG |
1478 | ERR("Unknown loglevel %s", opt_loglevel); |
1479 | ret = -LTTNG_ERR_INVALID; | |
1480 | goto error; | |
1481 | } | |
1482 | } else { | |
5cdb6027 | 1483 | if (opt_jul) { |
91744e14 | 1484 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 1485 | } else if (opt_log4j) { |
91744e14 | 1486 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1487 | } else if (opt_python) { |
91744e14 | 1488 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 1489 | } |
b2064f54 | 1490 | } |
91744e14 FD |
1491 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1492 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1493 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1494 | } else { |
3ecec76a | 1495 | assert(0); |
f3ed775e DG |
1496 | } |
1497 | ||
025faf73 | 1498 | if (!opt_filter) { |
9c48cab3 JI |
1499 | char *exclusion_string; |
1500 | ||
89476427 | 1501 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1502 | ev, channel_name, |
9f449915 PP |
1503 | NULL, |
1504 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1505 | exclusion_list); | |
1506 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1507 | if (!exclusion_string) { |
1508 | PERROR("Cannot allocate exclusion_string"); | |
1509 | error = 1; | |
1510 | goto end; | |
1511 | } | |
89476427 | 1512 | if (command_ret < 0) { |
025faf73 | 1513 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1514 | switch (-command_ret) { |
025faf73 | 1515 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1516 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1517 | event_name, |
9c48cab3 | 1518 | exclusion_string, |
85076754 | 1519 | print_channel_name(channel_name), session_name); |
89476427 | 1520 | warn = 1; |
025faf73 | 1521 | break; |
45d5d421 CB |
1522 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1523 | { | |
1524 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1525 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1526 | exclusion_string, | |
1527 | msg, | |
1528 | print_channel_name(channel_name), | |
1529 | session_name); | |
1530 | error = 1; | |
1531 | break; | |
1532 | } | |
dcabc190 FD |
1533 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1534 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1535 | event_name, print_channel_name(channel_name), | |
1536 | session_name); | |
1537 | error = 1; | |
1538 | break; | |
025faf73 | 1539 | default: |
9c48cab3 JI |
1540 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1541 | exclusion_string, | |
da3d7d0e JRJ |
1542 | lttng_strerror(command_ret), |
1543 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1544 | ? print_raw_channel_name(channel_name) |
1545 | : print_channel_name(channel_name), | |
1546 | session_name); | |
89476427 | 1547 | error = 1; |
025faf73 DG |
1548 | break; |
1549 | } | |
89476427 | 1550 | error_holder = command_ret; |
025faf73 | 1551 | } else { |
8274eeba AB |
1552 | switch (dom.type) { |
1553 | case LTTNG_DOMAIN_KERNEL: | |
1554 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1555 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1556 | get_domain_str(dom.type), |
1557 | event_name, | |
1558 | exclusion_string, | |
1559 | print_channel_name(channel_name)); | |
1560 | break; | |
1561 | case LTTNG_DOMAIN_JUL: | |
1562 | case LTTNG_DOMAIN_LOG4J: | |
1563 | case LTTNG_DOMAIN_PYTHON: | |
1564 | /* | |
1565 | * Don't print the default channel | |
1566 | * name for agent domains. | |
1567 | */ | |
895707da | 1568 | MSG("%s event %s%s enabled", |
8274eeba AB |
1569 | get_domain_str(dom.type), |
1570 | event_name, | |
1571 | exclusion_string); | |
1572 | break; | |
1573 | default: | |
1574 | assert(0); | |
49ceaa70 | 1575 | } |
42224349 | 1576 | } |
9c48cab3 | 1577 | free(exclusion_string); |
6181537c | 1578 | } |
025faf73 DG |
1579 | |
1580 | if (opt_filter) { | |
9c48cab3 JI |
1581 | char *exclusion_string; |
1582 | ||
89476427 | 1583 | /* Filter present */ |
91744e14 | 1584 | ev->filter = 1; |
89476427 | 1585 | |
91744e14 | 1586 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1587 | opt_filter, |
1588 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1589 | exclusion_list); | |
1590 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1591 | if (!exclusion_string) { |
1592 | PERROR("Cannot allocate exclusion_string"); | |
1593 | error = 1; | |
1594 | goto end; | |
1595 | } | |
89476427 JRJ |
1596 | if (command_ret < 0) { |
1597 | switch (-command_ret) { | |
7671f53c | 1598 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1599 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1600 | " (channel %s, session %s)", |
85076754 | 1601 | event_name, |
9c48cab3 | 1602 | exclusion_string, |
85076754 | 1603 | print_channel_name(channel_name), session_name); |
89476427 | 1604 | warn = 1; |
7671f53c | 1605 | break; |
45d5d421 CB |
1606 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1607 | { | |
1608 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1609 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1610 | exclusion_string, |
1611 | msg, | |
1612 | print_channel_name(channel_name), | |
1613 | session_name, opt_filter); | |
1614 | error = 1; | |
1615 | break; | |
1616 | } | |
7671f53c | 1617 | default: |
91744e14 | 1618 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1619 | exclusion_string, |
da3d7d0e JRJ |
1620 | lttng_strerror(command_ret), |
1621 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1622 | ? print_raw_channel_name(channel_name) |
1623 | : print_channel_name(channel_name), | |
1624 | session_name, opt_filter); | |
89476427 | 1625 | error = 1; |
7671f53c CB |
1626 | break; |
1627 | } | |
89476427 JRJ |
1628 | error_holder = command_ret; |
1629 | ||
16363652 | 1630 | } else { |
9c48cab3 JI |
1631 | MSG("Event %s%s: Filter '%s' successfully set", |
1632 | event_name, exclusion_string, | |
1633 | opt_filter); | |
53a80697 | 1634 | } |
9c48cab3 | 1635 | free(exclusion_string); |
53a80697 | 1636 | } |
6181537c | 1637 | |
89476427 JRJ |
1638 | if (lttng_opt_mi) { |
1639 | if (command_ret) { | |
1640 | success = 0; | |
91744e14 | 1641 | ev->enabled = 0; |
89476427 | 1642 | } else { |
91744e14 | 1643 | ev->enabled = 1; |
89476427 JRJ |
1644 | } |
1645 | ||
91744e14 | 1646 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1647 | if (ret) { |
1648 | ret = CMD_ERROR; | |
1649 | goto error; | |
1650 | } | |
1651 | ||
1652 | /* print exclusion */ | |
9f449915 | 1653 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1654 | if (ret) { |
1655 | ret = CMD_ERROR; | |
1656 | goto error; | |
1657 | } | |
1658 | ||
1659 | /* Success ? */ | |
1660 | ret = mi_lttng_writer_write_element_bool(writer, | |
1661 | mi_lttng_element_command_success, success); | |
1662 | if (ret) { | |
1663 | ret = CMD_ERROR; | |
1664 | goto end; | |
1665 | } | |
1666 | ||
1667 | /* Close event element */ | |
1668 | ret = mi_lttng_writer_close_element(writer); | |
1669 | if (ret) { | |
1670 | ret = CMD_ERROR; | |
1671 | goto end; | |
1672 | } | |
1673 | } | |
1674 | ||
f3ed775e DG |
1675 | /* Next event */ |
1676 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1677 | /* Reset warn, error and success */ |
1678 | success = 1; | |
f3ed775e DG |
1679 | } |
1680 | ||
8c9ae521 | 1681 | end: |
89476427 JRJ |
1682 | /* Close Mi */ |
1683 | if (lttng_opt_mi) { | |
1684 | /* Close events element */ | |
1685 | ret = mi_lttng_writer_close_element(writer); | |
1686 | if (ret) { | |
1687 | ret = CMD_ERROR; | |
1688 | goto error; | |
1689 | } | |
1690 | } | |
f3ed775e | 1691 | error: |
ae856491 DG |
1692 | if (warn) { |
1693 | ret = CMD_WARNING; | |
1694 | } | |
89476427 JRJ |
1695 | if (error) { |
1696 | ret = CMD_ERROR; | |
1697 | } | |
cd80958d | 1698 | lttng_destroy_handle(handle); |
9f449915 | 1699 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
7ed70bc9 | 1700 | |
89476427 JRJ |
1701 | /* Overwrite ret with error_holder if there was an actual error with |
1702 | * enabling an event. | |
1703 | */ | |
1704 | ret = error_holder ? error_holder : ret; | |
1705 | ||
91744e14 | 1706 | lttng_event_destroy(ev); |
f3ed775e DG |
1707 | return ret; |
1708 | } | |
1709 | ||
1710 | /* | |
6181537c | 1711 | * Add event to trace session |
f3ed775e DG |
1712 | */ |
1713 | int cmd_enable_events(int argc, const char **argv) | |
1714 | { | |
89476427 | 1715 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1716 | static poptContext pc; |
cd80958d | 1717 | char *session_name = NULL; |
68c7f6e5 | 1718 | const char *leftover = NULL; |
de044b7a | 1719 | int event_type = -1; |
f3ed775e DG |
1720 | |
1721 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1722 | poptReadDefaultConfig(pc, 0); | |
1723 | ||
1724 | /* Default event type */ | |
7a3d1328 | 1725 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1726 | |
1727 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1728 | switch (opt) { | |
1729 | case OPT_HELP: | |
4ba92f18 | 1730 | SHOW_HELP(); |
f3ed775e | 1731 | goto end; |
f3ed775e | 1732 | case OPT_TRACEPOINT: |
e6ddca71 | 1733 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1734 | break; |
cf0e5467 | 1735 | case OPT_PROBE: |
7d29a247 | 1736 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1737 | break; |
dcabc190 FD |
1738 | case OPT_USERSPACE_PROBE: |
1739 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1740 | break; | |
f3ed775e DG |
1741 | case OPT_FUNCTION: |
1742 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1743 | break; |
a54bd42d MD |
1744 | case OPT_SYSCALL: |
1745 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1746 | break; |
eeac7d46 MD |
1747 | case OPT_USERSPACE: |
1748 | opt_userspace = 1; | |
eeac7d46 | 1749 | break; |
0cda4f28 | 1750 | case OPT_LOGLEVEL: |
8005f29a | 1751 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1752 | opt_loglevel = poptGetOptArg(pc); |
1753 | break; | |
1754 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1755 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1756 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1757 | break; |
679b4943 SM |
1758 | case OPT_LIST_OPTIONS: |
1759 | list_cmd_options(stdout, long_options); | |
679b4943 | 1760 | goto end; |
53a80697 MD |
1761 | case OPT_FILTER: |
1762 | break; | |
fac3366c JI |
1763 | case OPT_EXCLUDE: |
1764 | break; | |
f3ed775e | 1765 | default: |
f3ed775e DG |
1766 | ret = CMD_UNDEFINED; |
1767 | goto end; | |
1768 | } | |
de044b7a DG |
1769 | |
1770 | /* Validate event type. Multiple event type are not supported. */ | |
1771 | if (event_type == -1) { | |
1772 | event_type = opt_event_type; | |
1773 | } else { | |
1774 | if (event_type != opt_event_type) { | |
1775 | ERR("Multiple event type not supported."); | |
1776 | ret = CMD_ERROR; | |
1777 | goto end; | |
1778 | } | |
1779 | } | |
f3ed775e DG |
1780 | } |
1781 | ||
3ecec76a PP |
1782 | ret = print_missing_or_multiple_domains( |
1783 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python); | |
1784 | if (ret) { | |
1785 | ret = CMD_ERROR; | |
1786 | goto end; | |
1787 | } | |
1788 | ||
89476427 JRJ |
1789 | /* Mi check */ |
1790 | if (lttng_opt_mi) { | |
1791 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1792 | if (!writer) { | |
1793 | ret = -LTTNG_ERR_NOMEM; | |
1794 | goto end; | |
1795 | } | |
1796 | ||
1797 | /* Open command element */ | |
1798 | ret = mi_lttng_writer_command_open(writer, | |
1799 | mi_lttng_element_command_enable_event); | |
1800 | if (ret) { | |
1801 | ret = CMD_ERROR; | |
1802 | goto end; | |
1803 | } | |
1804 | ||
1805 | /* Open output element */ | |
1806 | ret = mi_lttng_writer_open_element(writer, | |
1807 | mi_lttng_element_command_output); | |
1808 | if (ret) { | |
1809 | ret = CMD_ERROR; | |
1810 | goto end; | |
1811 | } | |
1812 | } | |
1813 | ||
f3ed775e DG |
1814 | opt_event_list = (char*) poptGetArg(pc); |
1815 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1816 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1817 | ret = CMD_ERROR; |
f3ed775e DG |
1818 | goto end; |
1819 | } | |
1820 | ||
68c7f6e5 JD |
1821 | leftover = poptGetArg(pc); |
1822 | if (leftover) { | |
1823 | ERR("Unknown argument: %s", leftover); | |
1824 | ret = CMD_ERROR; | |
1825 | goto end; | |
1826 | } | |
1827 | ||
cd80958d DG |
1828 | if (!opt_session_name) { |
1829 | session_name = get_session_name(); | |
1830 | if (session_name == NULL) { | |
89476427 JRJ |
1831 | command_ret = CMD_ERROR; |
1832 | success = 0; | |
1833 | goto mi_closing; | |
cd80958d DG |
1834 | } |
1835 | } else { | |
1836 | session_name = opt_session_name; | |
1837 | } | |
1838 | ||
89476427 JRJ |
1839 | command_ret = enable_events(session_name); |
1840 | if (command_ret) { | |
1841 | success = 0; | |
1842 | goto mi_closing; | |
1843 | } | |
1844 | ||
1845 | mi_closing: | |
1846 | /* Mi closing */ | |
1847 | if (lttng_opt_mi) { | |
1848 | /* Close output element */ | |
1849 | ret = mi_lttng_writer_close_element(writer); | |
1850 | if (ret) { | |
1851 | ret = CMD_ERROR; | |
1852 | goto end; | |
1853 | } | |
1854 | ||
1855 | ret = mi_lttng_writer_write_element_bool(writer, | |
1856 | mi_lttng_element_command_success, success); | |
1857 | if (ret) { | |
1858 | ret = CMD_ERROR; | |
1859 | goto end; | |
1860 | } | |
1861 | ||
1862 | /* Command element close */ | |
1863 | ret = mi_lttng_writer_command_close(writer); | |
1864 | if (ret) { | |
1865 | ret = CMD_ERROR; | |
1866 | goto end; | |
1867 | } | |
1868 | } | |
f3ed775e DG |
1869 | |
1870 | end: | |
89476427 JRJ |
1871 | /* Mi clean-up */ |
1872 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1873 | /* Preserve original error code */ | |
1874 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1875 | } | |
1876 | ||
cd80958d DG |
1877 | if (opt_session_name == NULL) { |
1878 | free(session_name); | |
1879 | } | |
1880 | ||
89476427 JRJ |
1881 | /* Overwrite ret if an error occurred in enable_events */ |
1882 | ret = command_ret ? command_ret : ret; | |
1883 | ||
ca1c3607 | 1884 | poptFreeContext(pc); |
f3ed775e DG |
1885 | return ret; |
1886 | } | |
9f449915 | 1887 |