Commit | Line | Data |
---|---|---|
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 */ | |
18f54786 | 146 | if (isalpha(name[0]) || 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 | ||
d0bb269f 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 | { | |
d0bb269f FD |
308 | int ret; |
309 | ||
310 | /* Check if the symbol field is an hex address. */ | |
859597f1 | 311 | ret = sscanf(symbol, "0x%*x"); |
d0bb269f FD |
312 | if (ret > 0) { |
313 | /* If there is a match, print a warning and return an error. */ | |
314 | ERR("Userspace probe on address not supported yet."); | |
315 | ret = CMD_UNSUPPORTED; | |
316 | goto error; | |
317 | } | |
318 | ||
319 | /* Check if the symbol field is an decimal address. */ | |
859597f1 | 320 | ret = sscanf(symbol, "%*u"); |
d0bb269f FD |
321 | if (ret > 0) { |
322 | /* If there is a match, print a warning and return an error. */ | |
323 | ERR("Userspace probe on address not supported yet."); | |
324 | ret = CMD_UNSUPPORTED; | |
325 | goto error; | |
326 | } | |
327 | ||
328 | /* Check if the symbol field is symbol+hex_offset. */ | |
859597f1 | 329 | ret = sscanf(symbol, "%*[^+]+0x%*x"); |
d0bb269f FD |
330 | if (ret > 0) { |
331 | /* If there is a match, print a warning and return an error. */ | |
332 | ERR("Userspace probe on symbol+offset not supported yet."); | |
333 | ret = CMD_UNSUPPORTED; | |
334 | goto error; | |
335 | } | |
336 | ||
337 | /* Check if the symbol field is symbol+decimal_offset. */ | |
859597f1 | 338 | ret = sscanf(symbol, "%*[^+]+%*u"); |
d0bb269f FD |
339 | if (ret > 0) { |
340 | /* If there is a match, print a warning and return an error. */ | |
341 | ERR("Userspace probe on symbol+offset not supported yet."); | |
342 | ret = CMD_UNSUPPORTED; | |
343 | goto error; | |
344 | } | |
345 | ||
346 | ret = 0; | |
347 | ||
348 | error: | |
349 | return ret; | |
350 | } | |
351 | ||
dcabc190 FD |
352 | /* |
353 | * Parse userspace probe options | |
354 | * Set the userspace probe fields in the lttng_event struct and set the | |
355 | * target_path to the path to the binary. | |
356 | */ | |
357 | static int parse_userspace_probe_opts(struct lttng_event *ev, char *opt) | |
358 | { | |
359 | int ret = CMD_SUCCESS; | |
360 | int num_token; | |
361 | char **tokens; | |
362 | char *target_path = NULL; | |
363 | char *unescaped_target_path = NULL; | |
364 | char *real_target_path = NULL; | |
365 | char *symbol_name = NULL, *probe_name = NULL, *provider_name = NULL; | |
366 | struct lttng_userspace_probe_location *probe_location = NULL; | |
367 | struct lttng_userspace_probe_location_lookup_method *lookup_method = | |
368 | NULL; | |
369 | ||
370 | if (opt == NULL) { | |
371 | ret = CMD_ERROR; | |
372 | goto end; | |
373 | } | |
374 | ||
ebbcac93 FD |
375 | switch (ev->type) { |
376 | case LTTNG_EVENT_USERSPACE_PROBE: | |
377 | break; | |
378 | default: | |
379 | assert(0); | |
380 | } | |
381 | ||
dcabc190 FD |
382 | /* |
383 | * userspace probe fields are separated by ':'. | |
384 | */ | |
385 | tokens = strutils_split(opt, ':', 1); | |
386 | num_token = strutils_array_of_strings_len(tokens); | |
387 | ||
388 | /* | |
389 | * Early sanity check that the number of parameter is between 2 and 4 | |
390 | * inclusively. | |
391 | * elf:PATH:SYMBOL | |
392 | * std:PATH:PROVIDER_NAME:PROBE_NAME | |
393 | * PATH:SYMBOL (same behavior as ELF) | |
394 | */ | |
395 | if (num_token < 2 || num_token > 4) { | |
396 | ret = CMD_ERROR; | |
397 | goto end_string; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Looking up the first parameter will tell the technique to use to | |
402 | * interpret the userspace probe/function description. | |
403 | */ | |
404 | switch (num_token) { | |
405 | case 2: | |
406 | /* When the probe type is omitted we assume ELF for now. */ | |
407 | case 3: | |
408 | if (num_token == 3 && strcmp(tokens[0], "elf") == 0) { | |
409 | target_path = tokens[1]; | |
410 | symbol_name = tokens[2]; | |
411 | } else if (num_token == 2) { | |
412 | target_path = tokens[0]; | |
413 | symbol_name = tokens[1]; | |
414 | } else { | |
415 | ret = CMD_ERROR; | |
416 | goto end_string; | |
417 | } | |
418 | lookup_method = | |
419 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
420 | if (!lookup_method) { | |
421 | WARN("Failed to create ELF lookup method"); | |
422 | ret = CMD_ERROR; | |
423 | goto end_string; | |
424 | } | |
425 | break; | |
426 | case 4: | |
427 | if (strcmp(tokens[0], "sdt") == 0) { | |
428 | target_path = tokens[1]; | |
429 | provider_name = tokens[2]; | |
430 | probe_name = tokens[3]; | |
431 | } else { | |
432 | ret = CMD_ERROR; | |
433 | goto end_string; | |
434 | } | |
435 | lookup_method = | |
436 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
437 | if (!lookup_method) { | |
ea1f3842 | 438 | WARN("Failed to create SDT lookup method"); |
dcabc190 FD |
439 | ret = CMD_ERROR; |
440 | goto end_string; | |
441 | } | |
442 | break; | |
443 | default: | |
444 | ret = CMD_ERROR; | |
445 | goto end_string; | |
446 | } | |
447 | ||
448 | /* strutils_unescape_string allocates a new char *. */ | |
449 | unescaped_target_path = strutils_unescape_string(target_path, 0); | |
450 | if (!unescaped_target_path) { | |
d0bb269f | 451 | ret = CMD_ERROR; |
ebbcac93 | 452 | goto end_destroy_lookup_method; |
dcabc190 FD |
453 | } |
454 | ||
455 | /* | |
456 | * If there is not forward slash in the path. Walk the $PATH else | |
457 | * expand. | |
458 | */ | |
ebbcac93 | 459 | if (strchr(unescaped_target_path, '/') == NULL) { |
dcabc190 FD |
460 | /* Walk the $PATH variable to find the targeted binary. */ |
461 | real_target_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
462 | if (!real_target_path) { | |
463 | PERROR("Error allocating path buffer"); | |
464 | ret = CMD_ERROR; | |
ebbcac93 | 465 | goto end_destroy_lookup_method; |
dcabc190 | 466 | } |
ebbcac93 | 467 | ret = walk_command_search_path(unescaped_target_path, real_target_path); |
dcabc190 FD |
468 | if (ret) { |
469 | ERR("Binary not found."); | |
470 | ret = CMD_ERROR; | |
ebbcac93 | 471 | goto end_destroy_lookup_method; |
dcabc190 FD |
472 | } |
473 | } else { | |
474 | /* | |
475 | * Expand references to `/./` and `/../`. This function does not check | |
ebbcac93 FD |
476 | * if the file exists. This call returns an allocated buffer on |
477 | * success. | |
dcabc190 | 478 | */ |
ebbcac93 | 479 | real_target_path = utils_expand_path_keep_symlink(unescaped_target_path); |
dcabc190 FD |
480 | if (!real_target_path) { |
481 | ERR("Error expanding the path to binary."); | |
482 | ret = CMD_ERROR; | |
ebbcac93 | 483 | goto end_destroy_lookup_method; |
dcabc190 FD |
484 | } |
485 | ||
486 | /* | |
70aef65c FD |
487 | * Check if the file exists using access(2), If it does not, |
488 | * return an error. | |
dcabc190 FD |
489 | */ |
490 | ret = access(real_target_path, F_OK); | |
491 | if (ret) { | |
cb3beba3 | 492 | ERR("Cannot find binary at path: %s.", real_target_path); |
dcabc190 | 493 | ret = CMD_ERROR; |
ebbcac93 | 494 | goto end_destroy_lookup_method; |
dcabc190 FD |
495 | } |
496 | } | |
497 | ||
498 | switch (lttng_userspace_probe_location_lookup_method_get_type(lookup_method)) { | |
499 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
d0bb269f FD |
500 | /* |
501 | * Check for common mistakes in userspace probe description syntax. | |
502 | */ | |
503 | ret = warn_userspace_probe_syntax(symbol_name); | |
504 | if (ret) { | |
505 | goto end_destroy_lookup_method; | |
506 | } | |
507 | ||
dcabc190 FD |
508 | probe_location = lttng_userspace_probe_location_function_create( |
509 | real_target_path, symbol_name, lookup_method); | |
510 | if (!probe_location) { | |
511 | WARN("Failed to create function probe location"); | |
512 | ret = CMD_ERROR; | |
513 | goto end_destroy_lookup_method; | |
514 | } | |
515 | ||
516 | /* Ownership transferred to probe_location. */ | |
517 | lookup_method = NULL; | |
518 | ||
519 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
520 | if (ret) { | |
521 | WARN("Failed to set probe location on event"); | |
522 | ret = CMD_ERROR; | |
523 | goto end_destroy_location; | |
524 | } | |
525 | break; | |
526 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
527 | probe_location = lttng_userspace_probe_location_tracepoint_create( | |
528 | real_target_path, provider_name, probe_name, lookup_method); | |
529 | if (!probe_location) { | |
530 | WARN("Failed to create function probe location"); | |
531 | ret = CMD_ERROR; | |
532 | goto end_destroy_lookup_method; | |
533 | } | |
534 | ||
535 | /* Ownership transferred to probe_location. */ | |
536 | lookup_method = NULL; | |
537 | ||
538 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
539 | if (ret) { | |
540 | WARN("Failed to set probe location on event"); | |
541 | ret = CMD_ERROR; | |
542 | goto end_destroy_location; | |
543 | } | |
544 | break; | |
545 | default: | |
546 | ret = CMD_ERROR; | |
ebbcac93 | 547 | goto end_destroy_lookup_method; |
dcabc190 FD |
548 | } |
549 | ||
ebbcac93 FD |
550 | /* Successful parsing, now clean up everything and return. */ |
551 | goto end_string; | |
dcabc190 FD |
552 | |
553 | end_destroy_location: | |
554 | lttng_userspace_probe_location_destroy(probe_location); | |
555 | end_destroy_lookup_method: | |
556 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
ebbcac93 FD |
557 | end_string: |
558 | strutils_free_null_terminated_array_of_strings(tokens); | |
dcabc190 | 559 | /* |
ebbcac93 FD |
560 | * Freeing both char * here makes the error handling simplier. free() |
561 | * performs not action if the pointer is NULL. | |
dcabc190 FD |
562 | */ |
563 | free(real_target_path); | |
dcabc190 | 564 | free(unescaped_target_path); |
dcabc190 FD |
565 | end: |
566 | return ret; | |
567 | } | |
568 | ||
5cdb6027 DG |
569 | /* |
570 | * Maps LOG4j loglevel from string to value | |
571 | */ | |
572 | static int loglevel_log4j_str_to_value(const char *inputstr) | |
573 | { | |
574 | int i = 0; | |
575 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
576 | ||
3712b110 JG |
577 | if (!inputstr || strlen(inputstr) == 0) { |
578 | return -1; | |
579 | } | |
580 | ||
5cdb6027 DG |
581 | /* |
582 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
583 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
584 | */ | |
585 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
586 | str[i] = toupper(inputstr[i]); | |
587 | i++; | |
588 | } | |
589 | str[i] = '\0'; | |
590 | ||
591 | if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) { | |
592 | return LTTNG_LOGLEVEL_LOG4J_OFF; | |
593 | } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) { | |
594 | return LTTNG_LOGLEVEL_LOG4J_FATAL; | |
595 | } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) { | |
596 | return LTTNG_LOGLEVEL_LOG4J_ERROR; | |
597 | } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) { | |
598 | return LTTNG_LOGLEVEL_LOG4J_WARN; | |
599 | } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) { | |
600 | return LTTNG_LOGLEVEL_LOG4J_INFO; | |
601 | } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) { | |
602 | return LTTNG_LOGLEVEL_LOG4J_DEBUG; | |
603 | } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) { | |
604 | return LTTNG_LOGLEVEL_LOG4J_TRACE; | |
605 | } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) { | |
606 | return LTTNG_LOGLEVEL_LOG4J_ALL; | |
607 | } else { | |
608 | return -1; | |
609 | } | |
610 | } | |
611 | ||
b2064f54 DG |
612 | /* |
613 | * Maps JUL loglevel from string to value | |
614 | */ | |
615 | static int loglevel_jul_str_to_value(const char *inputstr) | |
616 | { | |
617 | int i = 0; | |
618 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
619 | ||
3712b110 JG |
620 | if (!inputstr || strlen(inputstr) == 0) { |
621 | return -1; | |
622 | } | |
623 | ||
b2064f54 DG |
624 | /* |
625 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
626 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
627 | */ | |
628 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
629 | str[i] = toupper(inputstr[i]); | |
630 | i++; | |
631 | } | |
632 | str[i] = '\0'; | |
633 | ||
634 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { | |
635 | return LTTNG_LOGLEVEL_JUL_OFF; | |
636 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { | |
637 | return LTTNG_LOGLEVEL_JUL_SEVERE; | |
638 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { | |
639 | return LTTNG_LOGLEVEL_JUL_WARNING; | |
640 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { | |
641 | return LTTNG_LOGLEVEL_JUL_INFO; | |
642 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { | |
643 | return LTTNG_LOGLEVEL_JUL_CONFIG; | |
644 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { | |
645 | return LTTNG_LOGLEVEL_JUL_FINE; | |
646 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { | |
647 | return LTTNG_LOGLEVEL_JUL_FINER; | |
648 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { | |
649 | return LTTNG_LOGLEVEL_JUL_FINEST; | |
650 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { | |
651 | return LTTNG_LOGLEVEL_JUL_ALL; | |
652 | } else { | |
653 | return -1; | |
654 | } | |
655 | } | |
656 | ||
0e115563 DG |
657 | /* |
658 | * Maps Python loglevel from string to value | |
659 | */ | |
660 | static int loglevel_python_str_to_value(const char *inputstr) | |
661 | { | |
662 | int i = 0; | |
663 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
664 | ||
3712b110 JG |
665 | if (!inputstr || strlen(inputstr) == 0) { |
666 | return -1; | |
667 | } | |
668 | ||
0e115563 DG |
669 | /* |
670 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
671 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
672 | */ | |
673 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
674 | str[i] = toupper(inputstr[i]); | |
675 | i++; | |
676 | } | |
677 | str[i] = '\0'; | |
678 | ||
679 | if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) { | |
680 | return LTTNG_LOGLEVEL_PYTHON_CRITICAL; | |
681 | } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) { | |
682 | return LTTNG_LOGLEVEL_PYTHON_ERROR; | |
683 | } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) { | |
684 | return LTTNG_LOGLEVEL_PYTHON_WARNING; | |
685 | } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) { | |
686 | return LTTNG_LOGLEVEL_PYTHON_INFO; | |
687 | } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) { | |
688 | return LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
689 | } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) { | |
690 | return LTTNG_LOGLEVEL_PYTHON_NOTSET; | |
691 | } else { | |
692 | return -1; | |
693 | } | |
694 | } | |
695 | ||
8005f29a | 696 | /* |
0c8477c8 | 697 | * Maps loglevel from string to value |
8005f29a MD |
698 | */ |
699 | static | |
46839cc2 | 700 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 701 | { |
46839cc2 MD |
702 | int i = 0; |
703 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
704 | ||
3712b110 JG |
705 | if (!inputstr || strlen(inputstr) == 0) { |
706 | return -1; | |
707 | } | |
708 | ||
e051e07c DG |
709 | /* |
710 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
711 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
712 | */ | |
713 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
714 | str[i] = toupper(inputstr[i]); |
715 | i++; | |
716 | } | |
717 | str[i] = '\0'; | |
718 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
719 | return LTTNG_LOGLEVEL_EMERG; | |
720 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
721 | return LTTNG_LOGLEVEL_ALERT; | |
722 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
723 | return LTTNG_LOGLEVEL_CRIT; | |
724 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
725 | return LTTNG_LOGLEVEL_ERR; | |
726 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
727 | return LTTNG_LOGLEVEL_WARNING; | |
728 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
729 | return LTTNG_LOGLEVEL_NOTICE; | |
730 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
731 | return LTTNG_LOGLEVEL_INFO; | |
732 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
733 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
734 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
735 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
736 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
737 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
738 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
739 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
740 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
741 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
742 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
743 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
744 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
745 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
746 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
747 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
748 | } else { |
749 | return -1; | |
750 | } | |
751 | } | |
752 | ||
85076754 MD |
753 | static |
754 | const char *print_channel_name(const char *name) | |
755 | { | |
756 | return name ? : DEFAULT_CHANNEL_NAME; | |
757 | } | |
758 | ||
759 | static | |
760 | const char *print_raw_channel_name(const char *name) | |
761 | { | |
762 | return name ? : "<default>"; | |
763 | } | |
764 | ||
89476427 JRJ |
765 | /* |
766 | * Mi print exlcusion list | |
767 | */ | |
768 | static | |
9f449915 | 769 | int mi_print_exclusion(char **names) |
89476427 JRJ |
770 | { |
771 | int i, ret; | |
9f449915 | 772 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
773 | |
774 | assert(writer); | |
775 | ||
776 | if (count == 0) { | |
777 | ret = 0; | |
778 | goto end; | |
779 | } | |
780 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
781 | if (ret) { | |
782 | goto end; | |
783 | } | |
784 | ||
785 | for (i = 0; i < count; i++) { | |
786 | ret = mi_lttng_writer_write_element_string(writer, | |
787 | config_element_exclusion, names[i]); | |
788 | if (ret) { | |
789 | goto end; | |
790 | } | |
791 | } | |
792 | ||
793 | /* Close exclusions element */ | |
794 | ret = mi_lttng_writer_close_element(writer); | |
795 | ||
796 | end: | |
797 | return ret; | |
798 | } | |
799 | ||
9c48cab3 JI |
800 | /* |
801 | * Return allocated string for pretty-printing exclusion names. | |
802 | */ | |
803 | static | |
9f449915 | 804 | char *print_exclusions(char **names) |
9c48cab3 JI |
805 | { |
806 | int length = 0; | |
807 | int i; | |
6e766633 | 808 | const char preamble[] = " excluding "; |
9c48cab3 | 809 | char *ret; |
9f449915 | 810 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
811 | |
812 | if (count == 0) { | |
813 | return strdup(""); | |
814 | } | |
815 | ||
816 | /* calculate total required length */ | |
817 | for (i = 0; i < count; i++) { | |
9f449915 | 818 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
819 | } |
820 | ||
6e766633 JG |
821 | length += sizeof(preamble); |
822 | ret = zmalloc(length); | |
fd591b18 MD |
823 | if (!ret) { |
824 | return NULL; | |
825 | } | |
9c48cab3 JI |
826 | strncpy(ret, preamble, length); |
827 | for (i = 0; i < count; i++) { | |
9f449915 | 828 | strcat(ret, "\""); |
9c48cab3 | 829 | strcat(ret, names[i]); |
9f449915 | 830 | strcat(ret, "\""); |
9c48cab3 | 831 | if (i != count - 1) { |
9f449915 | 832 | strcat(ret, ", "); |
9c48cab3 JI |
833 | } |
834 | } | |
89476427 | 835 | |
9c48cab3 JI |
836 | return ret; |
837 | } | |
838 | ||
748bde76 | 839 | static |
9f449915 | 840 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 841 | { |
9f449915 PP |
842 | bool warn = false; |
843 | int ret = 0; | |
844 | const char *e = event_name; | |
845 | const char *x = exclusion; | |
846 | ||
847 | /* Scan both the excluder and the event letter by letter */ | |
848 | while (true) { | |
849 | if (*e == '\\') { | |
850 | if (*x != *e) { | |
851 | warn = true; | |
852 | goto end; | |
853 | } | |
748bde76 | 854 | |
9f449915 PP |
855 | e++; |
856 | x++; | |
857 | goto cmp_chars; | |
858 | } | |
859 | ||
860 | if (*x == '*') { | |
861 | /* Event is a subset of the excluder */ | |
862 | ERR("Event %s: %s excludes all events from %s", | |
863 | event_name, exclusion, event_name); | |
864 | goto error; | |
865 | } | |
866 | ||
867 | if (*e == '*') { | |
868 | /* | |
869 | * Reached the end of the event name before the | |
870 | * end of the exclusion: this is valid. | |
871 | */ | |
872 | goto end; | |
873 | } | |
874 | ||
875 | cmp_chars: | |
876 | if (*x != *e) { | |
877 | warn = true; | |
878 | break; | |
879 | } | |
880 | ||
881 | x++; | |
882 | e++; | |
748bde76 JI |
883 | } |
884 | ||
9f449915 | 885 | goto end; |
748bde76 | 886 | |
9f449915 PP |
887 | error: |
888 | ret = -1; | |
748bde76 | 889 | |
9f449915 PP |
890 | end: |
891 | if (warn) { | |
892 | WARN("Event %s: %s does not exclude any events from %s", | |
893 | event_name, exclusion, event_name); | |
894 | } | |
748bde76 | 895 | |
9f449915 PP |
896 | return ret; |
897 | } | |
898 | ||
9f449915 PP |
899 | static |
900 | int create_exclusion_list_and_validate(const char *event_name, | |
901 | const char *exclusions_arg, | |
902 | char ***exclusion_list) | |
903 | { | |
904 | int ret = 0; | |
905 | char **exclusions = NULL; | |
906 | ||
907 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
908 | if (!strutils_is_star_glob_pattern(event_name)) { | |
909 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
910 | event_name); | |
911 | goto error; | |
912 | } | |
913 | ||
914 | /* Split exclusions. */ | |
915 | exclusions = strutils_split(exclusions_arg, ',', true); | |
916 | if (!exclusions) { | |
917 | goto error; | |
918 | } | |
919 | ||
920 | /* | |
921 | * If the event name is a star-at-end only globbing pattern, | |
922 | * then we can validate the individual exclusions. Otherwise | |
923 | * all exclusions are passed to the session daemon. | |
924 | */ | |
925 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
926 | char * const *exclusion; | |
927 | ||
928 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
929 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
930 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 931 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 932 | if (ret) { |
5ef79758 MD |
933 | goto error; |
934 | } | |
748bde76 | 935 | } |
748bde76 JI |
936 | } |
937 | } | |
9f449915 PP |
938 | |
939 | *exclusion_list = exclusions; | |
940 | ||
748bde76 | 941 | goto end; |
9f449915 | 942 | |
748bde76 | 943 | error: |
9f449915 PP |
944 | ret = -1; |
945 | strutils_free_null_terminated_array_of_strings(exclusions); | |
946 | ||
748bde76 | 947 | end: |
748bde76 JI |
948 | return ret; |
949 | } | |
502bbe89 | 950 | |
9f449915 PP |
951 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
952 | int *warn) | |
502bbe89 | 953 | { |
9f449915 | 954 | char * const *exclusion; |
502bbe89 | 955 | |
9f449915 PP |
956 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
957 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 958 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 959 | *exclusion); |
502bbe89 PP |
960 | *warn = 1; |
961 | } | |
962 | } | |
963 | } | |
964 | ||
f3ed775e | 965 | /* |
6181537c | 966 | * Enabling event using the lttng API. |
89476427 | 967 | * Note: in case of error only the last error code will be return. |
f3ed775e | 968 | */ |
cd80958d | 969 | static int enable_events(char *session_name) |
f3ed775e | 970 | { |
89476427 JRJ |
971 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
972 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 973 | char *event_name, *channel_name = NULL; |
91744e14 | 974 | struct lttng_event *ev; |
7d29a247 | 975 | struct lttng_domain dom; |
7ed70bc9 | 976 | char **exclusion_list = NULL; |
f3ed775e | 977 | |
441c16a7 MD |
978 | memset(&dom, 0, sizeof(dom)); |
979 | ||
91744e14 FD |
980 | ev = lttng_event_create(); |
981 | if (!ev) { | |
982 | ret = CMD_ERROR; | |
983 | goto error; | |
984 | } | |
985 | ||
53a80697 | 986 | if (opt_kernel) { |
67b58630 JG |
987 | if (opt_loglevel) { |
988 | WARN("Kernel loglevels are not supported."); | |
989 | } | |
53a80697 MD |
990 | } |
991 | ||
7d29a247 DG |
992 | /* Create lttng domain */ |
993 | if (opt_kernel) { | |
994 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 995 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 996 | } else if (opt_userspace) { |
2bdd86d4 | 997 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 998 | /* Default. */ |
8692d4e5 | 999 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
1000 | } else if (opt_jul) { |
1001 | dom.type = LTTNG_DOMAIN_JUL; | |
1002 | /* Default. */ | |
1003 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
1004 | } else if (opt_log4j) { |
1005 | dom.type = LTTNG_DOMAIN_LOG4J; | |
1006 | /* Default. */ | |
1007 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
1008 | } else if (opt_python) { |
1009 | dom.type = LTTNG_DOMAIN_PYTHON; | |
1010 | /* Default. */ | |
1011 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 1012 | } else { |
3ecec76a PP |
1013 | /* Checked by the caller. */ |
1014 | assert(0); | |
2bdd86d4 | 1015 | } |
7d29a247 | 1016 | |
8b08c525 AB |
1017 | if (opt_exclude) { |
1018 | switch (dom.type) { | |
1019 | case LTTNG_DOMAIN_KERNEL: | |
1020 | case LTTNG_DOMAIN_JUL: | |
1021 | case LTTNG_DOMAIN_LOG4J: | |
1022 | case LTTNG_DOMAIN_PYTHON: | |
1023 | ERR("Event name exclusions are not yet implemented for %s events", | |
1024 | get_domain_str(dom.type)); | |
1025 | ret = CMD_ERROR; | |
1026 | goto error; | |
1027 | case LTTNG_DOMAIN_UST: | |
1028 | /* Exclusions supported */ | |
1029 | break; | |
1030 | default: | |
1031 | assert(0); | |
1032 | } | |
d5dd17fd JI |
1033 | } |
1034 | ||
4fd2697f FD |
1035 | /* |
1036 | * Adding a filter to a probe, function or userspace-probe would be | |
1037 | * denied by the kernel tracer as it's not supported at the moment. We | |
1038 | * do an early check here to warn the user. | |
1039 | */ | |
1040 | if (opt_filter && opt_kernel) { | |
1041 | switch (opt_event_type) { | |
1042 | case LTTNG_EVENT_ALL: | |
1043 | case LTTNG_EVENT_TRACEPOINT: | |
1044 | case LTTNG_EVENT_SYSCALL: | |
1045 | break; | |
1046 | case LTTNG_EVENT_PROBE: | |
1047 | case LTTNG_EVENT_USERSPACE_PROBE: | |
1048 | case LTTNG_EVENT_FUNCTION: | |
1049 | ERR("Filter expressions are not supported for %s events", | |
1050 | get_event_type_str(opt_event_type)); | |
1051 | ret = CMD_ERROR; | |
1052 | goto error; | |
1053 | default: | |
1054 | ret = CMD_UNDEFINED; | |
1055 | goto error; | |
1056 | } | |
1057 | } | |
1058 | ||
85076754 | 1059 | channel_name = opt_channel_name; |
ae856491 | 1060 | |
cd80958d DG |
1061 | handle = lttng_create_handle(session_name, &dom); |
1062 | if (handle == NULL) { | |
1063 | ret = -1; | |
1064 | goto error; | |
1065 | } | |
1aef21b6 | 1066 | |
89476427 JRJ |
1067 | /* Prepare Mi */ |
1068 | if (lttng_opt_mi) { | |
1069 | /* Open a events element */ | |
1070 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
1071 | if (ret) { | |
1072 | ret = CMD_ERROR; | |
1073 | goto error; | |
1074 | } | |
1075 | } | |
1076 | ||
cd80958d | 1077 | if (opt_enable_all) { |
8c9ae521 | 1078 | /* Default setup for enable all */ |
75e8c5ab | 1079 | if (opt_kernel) { |
91744e14 FD |
1080 | ev->type = opt_event_type; |
1081 | strcpy(ev->name, "*"); | |
300b8fd5 | 1082 | /* kernel loglevels not implemented */ |
91744e14 | 1083 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 1084 | } else { |
91744e14 FD |
1085 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1086 | strcpy(ev->name, "*"); | |
1087 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 1088 | if (opt_loglevel) { |
0e115563 | 1089 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1090 | if (opt_userspace) { |
91744e14 | 1091 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
b2064f54 | 1092 | } else if (opt_jul) { |
91744e14 | 1093 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1094 | } else if (opt_log4j) { |
91744e14 | 1095 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1096 | } else if (opt_python) { |
91744e14 | 1097 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
b2064f54 | 1098 | } |
91744e14 | 1099 | if (ev->loglevel == -1) { |
300b8fd5 | 1100 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1101 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
1102 | goto error; |
1103 | } | |
22e25b71 | 1104 | } else { |
0e115563 | 1105 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1106 | if (opt_userspace) { |
91744e14 | 1107 | ev->loglevel = -1; |
34aa3685 | 1108 | } else if (opt_jul) { |
91744e14 | 1109 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 1110 | } else if (opt_log4j) { |
91744e14 | 1111 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1112 | } else if (opt_python) { |
91744e14 | 1113 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 1114 | } |
300b8fd5 | 1115 | } |
75e8c5ab | 1116 | } |
8c9ae521 | 1117 | |
7ed70bc9 | 1118 | if (opt_exclude) { |
9f449915 PP |
1119 | ret = create_exclusion_list_and_validate("*", |
1120 | opt_exclude, &exclusion_list); | |
1121 | if (ret) { | |
1122 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1123 | goto error; |
1124 | } | |
502bbe89 | 1125 | |
91744e14 | 1126 | ev->exclusion = 1; |
502bbe89 | 1127 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 1128 | &warn); |
7ed70bc9 | 1129 | } |
025faf73 | 1130 | if (!opt_filter) { |
7ed70bc9 | 1131 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1132 | ev, channel_name, |
7ed70bc9 | 1133 | NULL, |
9f449915 PP |
1134 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
1135 | exclusion_list); | |
025faf73 DG |
1136 | if (ret < 0) { |
1137 | switch (-ret) { | |
1138 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
1139 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 1140 | print_channel_name(channel_name), session_name); |
89476427 | 1141 | warn = 1; |
025faf73 | 1142 | break; |
45d5d421 CB |
1143 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1144 | { | |
1145 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1146 | ERR("Events: %s (channel %s, session %s)", | |
1147 | msg, | |
1148 | print_channel_name(channel_name), | |
1149 | session_name); | |
1150 | error = 1; | |
1151 | break; | |
1152 | } | |
025faf73 DG |
1153 | default: |
1154 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
1155 | lttng_strerror(ret), |
1156 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
1157 | ? print_raw_channel_name(channel_name) | |
1158 | : print_channel_name(channel_name), | |
1159 | session_name); | |
89476427 | 1160 | error = 1; |
025faf73 DG |
1161 | break; |
1162 | } | |
1163 | goto end; | |
42224349 | 1164 | } |
8c9ae521 | 1165 | |
025faf73 DG |
1166 | switch (opt_event_type) { |
1167 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 1168 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1169 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1170 | |
1171 | if (!exclusion_string) { | |
1172 | PERROR("Cannot allocate exclusion_string"); | |
1173 | error = 1; | |
1174 | goto end; | |
1175 | } | |
9c48cab3 | 1176 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1177 | get_domain_str(dom.type), |
9c48cab3 | 1178 | exclusion_string, |
85076754 | 1179 | print_channel_name(channel_name), |
025faf73 | 1180 | opt_loglevel); |
9c48cab3 | 1181 | free(exclusion_string); |
025faf73 | 1182 | } else { |
9f449915 | 1183 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1184 | |
1185 | if (!exclusion_string) { | |
1186 | PERROR("Cannot allocate exclusion_string"); | |
1187 | error = 1; | |
1188 | goto end; | |
1189 | } | |
9c48cab3 | 1190 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 1191 | get_domain_str(dom.type), |
9c48cab3 | 1192 | exclusion_string, |
85076754 | 1193 | print_channel_name(channel_name)); |
9c48cab3 | 1194 | free(exclusion_string); |
025faf73 DG |
1195 | } |
1196 | break; | |
1197 | case LTTNG_EVENT_SYSCALL: | |
1198 | if (opt_kernel) { | |
6e911cad MD |
1199 | MSG("All %s system calls are enabled in channel %s", |
1200 | get_domain_str(dom.type), | |
85076754 | 1201 | print_channel_name(channel_name)); |
025faf73 DG |
1202 | } |
1203 | break; | |
1204 | case LTTNG_EVENT_ALL: | |
67b58630 | 1205 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1206 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1207 | |
1208 | if (!exclusion_string) { | |
1209 | PERROR("Cannot allocate exclusion_string"); | |
1210 | error = 1; | |
1211 | goto end; | |
1212 | } | |
9c48cab3 | 1213 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1214 | get_domain_str(dom.type), |
9c48cab3 | 1215 | exclusion_string, |
85076754 | 1216 | print_channel_name(channel_name), |
025faf73 | 1217 | opt_loglevel); |
9c48cab3 | 1218 | free(exclusion_string); |
025faf73 | 1219 | } else { |
9f449915 | 1220 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1221 | |
1222 | if (!exclusion_string) { | |
1223 | PERROR("Cannot allocate exclusion_string"); | |
1224 | error = 1; | |
1225 | goto end; | |
1226 | } | |
9c48cab3 | 1227 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 1228 | get_domain_str(dom.type), |
9c48cab3 | 1229 | exclusion_string, |
85076754 | 1230 | print_channel_name(channel_name)); |
9c48cab3 | 1231 | free(exclusion_string); |
025faf73 DG |
1232 | } |
1233 | break; | |
1234 | default: | |
1235 | /* | |
1236 | * We should not be here since lttng_enable_event should have | |
1237 | * failed on the event type. | |
1238 | */ | |
1239 | goto error; | |
57064ada | 1240 | } |
f3ed775e | 1241 | } |
89476427 | 1242 | |
025faf73 | 1243 | if (opt_filter) { |
91744e14 | 1244 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1245 | opt_filter, |
1246 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1247 | exclusion_list); | |
89476427 JRJ |
1248 | if (command_ret < 0) { |
1249 | switch (-command_ret) { | |
16363652 | 1250 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 1251 | WARN("Filter on all events is already enabled" |
16363652 | 1252 | " (channel %s, session %s)", |
85076754 | 1253 | print_channel_name(channel_name), session_name); |
89476427 | 1254 | warn = 1; |
16363652 | 1255 | break; |
45d5d421 CB |
1256 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1257 | { | |
1258 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1259 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
1260 | msg, | |
1261 | print_channel_name(channel_name), | |
1262 | session_name, opt_filter); | |
1263 | error = 1; | |
1264 | break; | |
1265 | } | |
16363652 | 1266 | default: |
85076754 | 1267 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
1268 | lttng_strerror(command_ret), |
1269 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1270 | ? print_raw_channel_name(channel_name) |
1271 | : print_channel_name(channel_name), | |
1272 | session_name, opt_filter); | |
89476427 | 1273 | error = 1; |
16363652 DG |
1274 | break; |
1275 | } | |
89476427 | 1276 | error_holder = command_ret; |
16363652 | 1277 | } else { |
91744e14 | 1278 | ev->filter = 1; |
16363652 DG |
1279 | MSG("Filter '%s' successfully set", opt_filter); |
1280 | } | |
1281 | } | |
89476427 JRJ |
1282 | |
1283 | if (lttng_opt_mi) { | |
1284 | /* The wildcard * is used for kernel and ust domain to | |
1285 | * represent ALL. We copy * in event name to force the wildcard use | |
1286 | * for kernel domain | |
1287 | * | |
1288 | * Note: this is strictly for semantic and printing while in | |
1289 | * machine interface mode. | |
1290 | */ | |
91744e14 | 1291 | strcpy(ev->name, "*"); |
89476427 JRJ |
1292 | |
1293 | /* If we reach here the events are enabled */ | |
1294 | if (!error && !warn) { | |
91744e14 | 1295 | ev->enabled = 1; |
89476427 | 1296 | } else { |
91744e14 | 1297 | ev->enabled = 0; |
89476427 JRJ |
1298 | success = 0; |
1299 | } | |
91744e14 | 1300 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1301 | if (ret) { |
1302 | ret = CMD_ERROR; | |
1303 | goto error; | |
1304 | } | |
1305 | ||
1306 | /* print exclusion */ | |
9f449915 | 1307 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1308 | if (ret) { |
1309 | ret = CMD_ERROR; | |
1310 | goto error; | |
1311 | } | |
1312 | ||
1313 | /* Success ? */ | |
1314 | ret = mi_lttng_writer_write_element_bool(writer, | |
1315 | mi_lttng_element_command_success, success); | |
1316 | if (ret) { | |
1317 | ret = CMD_ERROR; | |
1318 | goto error; | |
1319 | } | |
1320 | ||
1321 | /* Close event element */ | |
1322 | ret = mi_lttng_writer_close_element(writer); | |
1323 | if (ret) { | |
1324 | ret = CMD_ERROR; | |
1325 | goto error; | |
1326 | } | |
1327 | } | |
1328 | ||
8c9ae521 | 1329 | goto end; |
f3ed775e DG |
1330 | } |
1331 | ||
1332 | /* Strip event list */ | |
1333 | event_name = strtok(opt_event_list, ","); | |
1334 | while (event_name != NULL) { | |
6181537c | 1335 | /* Copy name and type of the event */ |
91744e14 FD |
1336 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
1337 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
1338 | ev->type = opt_event_type; | |
6181537c | 1339 | |
f3ed775e DG |
1340 | /* Kernel tracer action */ |
1341 | if (opt_kernel) { | |
1342 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
1343 | event_name, |
1344 | print_channel_name(channel_name)); | |
f3ed775e DG |
1345 | |
1346 | switch (opt_event_type) { | |
29c62722 MD |
1347 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
1348 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
1349 | if (strcmp(ev->name, "*")) { |
1350 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
1351 | } |
1352 | break; | |
e6ddca71 | 1353 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 1354 | break; |
7d29a247 | 1355 | case LTTNG_EVENT_PROBE: |
91744e14 | 1356 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 1357 | if (ret) { |
cf0e5467 | 1358 | ERR("Unable to parse probe options"); |
91744e14 | 1359 | ret = CMD_ERROR; |
0d63dd19 DG |
1360 | goto error; |
1361 | } | |
f3ed775e | 1362 | break; |
dcabc190 FD |
1363 | case LTTNG_EVENT_USERSPACE_PROBE: |
1364 | ret = parse_userspace_probe_opts(ev, opt_userspace_probe); | |
1365 | if (ret) { | |
d0bb269f FD |
1366 | switch (ret) { |
1367 | case CMD_UNSUPPORTED: | |
1368 | /* | |
1369 | * Error message describing | |
1370 | * what is not supported was | |
1371 | * printed in the function. | |
1372 | */ | |
1373 | break; | |
1374 | case CMD_ERROR: | |
1375 | default: | |
1376 | ERR("Unable to parse userspace probe options"); | |
1377 | break; | |
1378 | } | |
dcabc190 FD |
1379 | goto error; |
1380 | } | |
1381 | break; | |
f3ed775e | 1382 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 1383 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 1384 | if (ret) { |
8f0d098b | 1385 | ERR("Unable to parse function probe options"); |
91744e14 | 1386 | ret = CMD_ERROR; |
8f0d098b MD |
1387 | goto error; |
1388 | } | |
1389 | break; | |
a54bd42d | 1390 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 1391 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 1392 | break; |
f3ed775e | 1393 | default: |
1ab1ea0b | 1394 | ret = CMD_UNDEFINED; |
f3ed775e DG |
1395 | goto error; |
1396 | } | |
0cda4f28 | 1397 | |
0cda4f28 | 1398 | /* kernel loglevels not implemented */ |
91744e14 | 1399 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 1400 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 1401 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 1402 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
1403 | |
1404 | switch (opt_event_type) { | |
1405 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
1406 | /* Fall-through */ |
1407 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 1408 | /* Copy name and type of the event */ |
91744e14 FD |
1409 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1410 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1411 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
1412 | break; |
1413 | case LTTNG_EVENT_PROBE: | |
1414 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 1415 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 1416 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 1417 | default: |
cc62c0c0 | 1418 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 1419 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
1420 | goto error; |
1421 | } | |
0cda4f28 | 1422 | |
7ed70bc9 | 1423 | if (opt_exclude) { |
91744e14 | 1424 | ev->exclusion = 1; |
d5dd17fd JI |
1425 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
1426 | ERR("Exclusion option can only be used with tracepoint events"); | |
1427 | ret = CMD_ERROR; | |
1428 | goto error; | |
1429 | } | |
7ed70bc9 | 1430 | /* Free previously allocated items */ |
9f449915 PP |
1431 | strutils_free_null_terminated_array_of_strings( |
1432 | exclusion_list); | |
1433 | exclusion_list = NULL; | |
1434 | ret = create_exclusion_list_and_validate( | |
1435 | event_name, opt_exclude, | |
1436 | &exclusion_list); | |
1437 | if (ret) { | |
1438 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1439 | goto error; |
1440 | } | |
502bbe89 PP |
1441 | |
1442 | warn_on_truncated_exclusion_names( | |
9f449915 | 1443 | exclusion_list, &warn); |
7ed70bc9 JI |
1444 | } |
1445 | ||
91744e14 | 1446 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 1447 | if (opt_loglevel) { |
91744e14 FD |
1448 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
1449 | if (ev->loglevel == -1) { | |
8005f29a | 1450 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1451 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
1452 | goto error; |
1453 | } | |
22e25b71 | 1454 | } else { |
91744e14 | 1455 | ev->loglevel = -1; |
ed7f4083 | 1456 | } |
0e115563 | 1457 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
1458 | if (opt_event_type != LTTNG_EVENT_ALL && |
1459 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 1460 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
1461 | ret = CMD_UNSUPPORTED; |
1462 | goto error; | |
1463 | } | |
b2064f54 | 1464 | |
91744e14 | 1465 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 1466 | if (opt_loglevel) { |
5cdb6027 | 1467 | if (opt_jul) { |
91744e14 | 1468 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1469 | } else if (opt_log4j) { |
91744e14 | 1470 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1471 | } else if (opt_python) { |
91744e14 | 1472 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
5cdb6027 | 1473 | } |
91744e14 | 1474 | if (ev->loglevel == -1) { |
b2064f54 DG |
1475 | ERR("Unknown loglevel %s", opt_loglevel); |
1476 | ret = -LTTNG_ERR_INVALID; | |
1477 | goto error; | |
1478 | } | |
1479 | } else { | |
5cdb6027 | 1480 | if (opt_jul) { |
91744e14 | 1481 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 1482 | } else if (opt_log4j) { |
91744e14 | 1483 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1484 | } else if (opt_python) { |
91744e14 | 1485 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 1486 | } |
b2064f54 | 1487 | } |
91744e14 FD |
1488 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1489 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1490 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1491 | } else { |
3ecec76a | 1492 | assert(0); |
f3ed775e DG |
1493 | } |
1494 | ||
025faf73 | 1495 | if (!opt_filter) { |
9c48cab3 JI |
1496 | char *exclusion_string; |
1497 | ||
89476427 | 1498 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1499 | ev, channel_name, |
9f449915 PP |
1500 | NULL, |
1501 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1502 | exclusion_list); | |
1503 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1504 | if (!exclusion_string) { |
1505 | PERROR("Cannot allocate exclusion_string"); | |
1506 | error = 1; | |
1507 | goto end; | |
1508 | } | |
89476427 | 1509 | if (command_ret < 0) { |
025faf73 | 1510 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1511 | switch (-command_ret) { |
025faf73 | 1512 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1513 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1514 | event_name, |
9c48cab3 | 1515 | exclusion_string, |
85076754 | 1516 | print_channel_name(channel_name), session_name); |
89476427 | 1517 | warn = 1; |
025faf73 | 1518 | break; |
45d5d421 CB |
1519 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1520 | { | |
1521 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1522 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1523 | exclusion_string, | |
1524 | msg, | |
1525 | print_channel_name(channel_name), | |
1526 | session_name); | |
1527 | error = 1; | |
1528 | break; | |
1529 | } | |
dcabc190 FD |
1530 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1531 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1532 | event_name, print_channel_name(channel_name), | |
1533 | session_name); | |
1534 | error = 1; | |
1535 | break; | |
025faf73 | 1536 | default: |
9c48cab3 JI |
1537 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1538 | exclusion_string, | |
da3d7d0e JRJ |
1539 | lttng_strerror(command_ret), |
1540 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1541 | ? print_raw_channel_name(channel_name) |
1542 | : print_channel_name(channel_name), | |
1543 | session_name); | |
89476427 | 1544 | error = 1; |
025faf73 DG |
1545 | break; |
1546 | } | |
89476427 | 1547 | error_holder = command_ret; |
025faf73 | 1548 | } else { |
8274eeba AB |
1549 | switch (dom.type) { |
1550 | case LTTNG_DOMAIN_KERNEL: | |
1551 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1552 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1553 | get_domain_str(dom.type), |
1554 | event_name, | |
1555 | exclusion_string, | |
1556 | print_channel_name(channel_name)); | |
1557 | break; | |
1558 | case LTTNG_DOMAIN_JUL: | |
1559 | case LTTNG_DOMAIN_LOG4J: | |
1560 | case LTTNG_DOMAIN_PYTHON: | |
1561 | /* | |
1562 | * Don't print the default channel | |
1563 | * name for agent domains. | |
1564 | */ | |
895707da | 1565 | MSG("%s event %s%s enabled", |
8274eeba AB |
1566 | get_domain_str(dom.type), |
1567 | event_name, | |
1568 | exclusion_string); | |
1569 | break; | |
1570 | default: | |
1571 | assert(0); | |
49ceaa70 | 1572 | } |
42224349 | 1573 | } |
9c48cab3 | 1574 | free(exclusion_string); |
6181537c | 1575 | } |
025faf73 DG |
1576 | |
1577 | if (opt_filter) { | |
9c48cab3 JI |
1578 | char *exclusion_string; |
1579 | ||
89476427 | 1580 | /* Filter present */ |
91744e14 | 1581 | ev->filter = 1; |
89476427 | 1582 | |
91744e14 | 1583 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1584 | opt_filter, |
1585 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1586 | exclusion_list); | |
1587 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1588 | if (!exclusion_string) { |
1589 | PERROR("Cannot allocate exclusion_string"); | |
1590 | error = 1; | |
1591 | goto end; | |
1592 | } | |
89476427 JRJ |
1593 | if (command_ret < 0) { |
1594 | switch (-command_ret) { | |
7671f53c | 1595 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1596 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1597 | " (channel %s, session %s)", |
85076754 | 1598 | event_name, |
9c48cab3 | 1599 | exclusion_string, |
85076754 | 1600 | print_channel_name(channel_name), session_name); |
89476427 | 1601 | warn = 1; |
7671f53c | 1602 | break; |
45d5d421 CB |
1603 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1604 | { | |
1605 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1606 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1607 | exclusion_string, |
1608 | msg, | |
1609 | print_channel_name(channel_name), | |
1610 | session_name, opt_filter); | |
1611 | error = 1; | |
1612 | break; | |
1613 | } | |
7671f53c | 1614 | default: |
91744e14 | 1615 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1616 | exclusion_string, |
da3d7d0e JRJ |
1617 | lttng_strerror(command_ret), |
1618 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1619 | ? print_raw_channel_name(channel_name) |
1620 | : print_channel_name(channel_name), | |
1621 | session_name, opt_filter); | |
89476427 | 1622 | error = 1; |
7671f53c CB |
1623 | break; |
1624 | } | |
89476427 JRJ |
1625 | error_holder = command_ret; |
1626 | ||
16363652 | 1627 | } else { |
9c48cab3 JI |
1628 | MSG("Event %s%s: Filter '%s' successfully set", |
1629 | event_name, exclusion_string, | |
1630 | opt_filter); | |
53a80697 | 1631 | } |
9c48cab3 | 1632 | free(exclusion_string); |
53a80697 | 1633 | } |
6181537c | 1634 | |
89476427 JRJ |
1635 | if (lttng_opt_mi) { |
1636 | if (command_ret) { | |
1637 | success = 0; | |
91744e14 | 1638 | ev->enabled = 0; |
89476427 | 1639 | } else { |
91744e14 | 1640 | ev->enabled = 1; |
89476427 JRJ |
1641 | } |
1642 | ||
91744e14 | 1643 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1644 | if (ret) { |
1645 | ret = CMD_ERROR; | |
1646 | goto error; | |
1647 | } | |
1648 | ||
1649 | /* print exclusion */ | |
9f449915 | 1650 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1651 | if (ret) { |
1652 | ret = CMD_ERROR; | |
1653 | goto error; | |
1654 | } | |
1655 | ||
1656 | /* Success ? */ | |
1657 | ret = mi_lttng_writer_write_element_bool(writer, | |
1658 | mi_lttng_element_command_success, success); | |
1659 | if (ret) { | |
1660 | ret = CMD_ERROR; | |
1661 | goto end; | |
1662 | } | |
1663 | ||
1664 | /* Close event element */ | |
1665 | ret = mi_lttng_writer_close_element(writer); | |
1666 | if (ret) { | |
1667 | ret = CMD_ERROR; | |
1668 | goto end; | |
1669 | } | |
1670 | } | |
1671 | ||
f3ed775e DG |
1672 | /* Next event */ |
1673 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1674 | /* Reset warn, error and success */ |
1675 | success = 1; | |
f3ed775e DG |
1676 | } |
1677 | ||
8c9ae521 | 1678 | end: |
89476427 JRJ |
1679 | /* Close Mi */ |
1680 | if (lttng_opt_mi) { | |
1681 | /* Close events element */ | |
1682 | ret = mi_lttng_writer_close_element(writer); | |
1683 | if (ret) { | |
1684 | ret = CMD_ERROR; | |
1685 | goto error; | |
1686 | } | |
1687 | } | |
f3ed775e | 1688 | error: |
ae856491 DG |
1689 | if (warn) { |
1690 | ret = CMD_WARNING; | |
1691 | } | |
89476427 JRJ |
1692 | if (error) { |
1693 | ret = CMD_ERROR; | |
1694 | } | |
cd80958d | 1695 | lttng_destroy_handle(handle); |
9f449915 | 1696 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
7ed70bc9 | 1697 | |
89476427 JRJ |
1698 | /* Overwrite ret with error_holder if there was an actual error with |
1699 | * enabling an event. | |
1700 | */ | |
1701 | ret = error_holder ? error_holder : ret; | |
1702 | ||
91744e14 | 1703 | lttng_event_destroy(ev); |
f3ed775e DG |
1704 | return ret; |
1705 | } | |
1706 | ||
1707 | /* | |
6181537c | 1708 | * Add event to trace session |
f3ed775e DG |
1709 | */ |
1710 | int cmd_enable_events(int argc, const char **argv) | |
1711 | { | |
89476427 | 1712 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1713 | static poptContext pc; |
cd80958d | 1714 | char *session_name = NULL; |
68c7f6e5 | 1715 | const char *leftover = NULL; |
de044b7a | 1716 | int event_type = -1; |
f3ed775e DG |
1717 | |
1718 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1719 | poptReadDefaultConfig(pc, 0); | |
1720 | ||
1721 | /* Default event type */ | |
7a3d1328 | 1722 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1723 | |
1724 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1725 | switch (opt) { | |
1726 | case OPT_HELP: | |
4ba92f18 | 1727 | SHOW_HELP(); |
f3ed775e | 1728 | goto end; |
f3ed775e | 1729 | case OPT_TRACEPOINT: |
e6ddca71 | 1730 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1731 | break; |
cf0e5467 | 1732 | case OPT_PROBE: |
7d29a247 | 1733 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1734 | break; |
dcabc190 FD |
1735 | case OPT_USERSPACE_PROBE: |
1736 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1737 | break; | |
f3ed775e DG |
1738 | case OPT_FUNCTION: |
1739 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1740 | break; |
a54bd42d MD |
1741 | case OPT_SYSCALL: |
1742 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1743 | break; |
eeac7d46 MD |
1744 | case OPT_USERSPACE: |
1745 | opt_userspace = 1; | |
eeac7d46 | 1746 | break; |
0cda4f28 | 1747 | case OPT_LOGLEVEL: |
8005f29a | 1748 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1749 | opt_loglevel = poptGetOptArg(pc); |
1750 | break; | |
1751 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1752 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1753 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1754 | break; |
679b4943 SM |
1755 | case OPT_LIST_OPTIONS: |
1756 | list_cmd_options(stdout, long_options); | |
679b4943 | 1757 | goto end; |
53a80697 MD |
1758 | case OPT_FILTER: |
1759 | break; | |
fac3366c JI |
1760 | case OPT_EXCLUDE: |
1761 | break; | |
f3ed775e | 1762 | default: |
f3ed775e DG |
1763 | ret = CMD_UNDEFINED; |
1764 | goto end; | |
1765 | } | |
de044b7a DG |
1766 | |
1767 | /* Validate event type. Multiple event type are not supported. */ | |
1768 | if (event_type == -1) { | |
1769 | event_type = opt_event_type; | |
1770 | } else { | |
1771 | if (event_type != opt_event_type) { | |
1772 | ERR("Multiple event type not supported."); | |
1773 | ret = CMD_ERROR; | |
1774 | goto end; | |
1775 | } | |
1776 | } | |
f3ed775e DG |
1777 | } |
1778 | ||
3ecec76a PP |
1779 | ret = print_missing_or_multiple_domains( |
1780 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python); | |
1781 | if (ret) { | |
1782 | ret = CMD_ERROR; | |
1783 | goto end; | |
1784 | } | |
1785 | ||
89476427 JRJ |
1786 | /* Mi check */ |
1787 | if (lttng_opt_mi) { | |
1788 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1789 | if (!writer) { | |
1790 | ret = -LTTNG_ERR_NOMEM; | |
1791 | goto end; | |
1792 | } | |
1793 | ||
1794 | /* Open command element */ | |
1795 | ret = mi_lttng_writer_command_open(writer, | |
1796 | mi_lttng_element_command_enable_event); | |
1797 | if (ret) { | |
1798 | ret = CMD_ERROR; | |
1799 | goto end; | |
1800 | } | |
1801 | ||
1802 | /* Open output element */ | |
1803 | ret = mi_lttng_writer_open_element(writer, | |
1804 | mi_lttng_element_command_output); | |
1805 | if (ret) { | |
1806 | ret = CMD_ERROR; | |
1807 | goto end; | |
1808 | } | |
1809 | } | |
1810 | ||
f3ed775e DG |
1811 | opt_event_list = (char*) poptGetArg(pc); |
1812 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1813 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1814 | ret = CMD_ERROR; |
f3ed775e DG |
1815 | goto end; |
1816 | } | |
1817 | ||
68c7f6e5 JD |
1818 | leftover = poptGetArg(pc); |
1819 | if (leftover) { | |
1820 | ERR("Unknown argument: %s", leftover); | |
1821 | ret = CMD_ERROR; | |
1822 | goto end; | |
1823 | } | |
1824 | ||
cd80958d DG |
1825 | if (!opt_session_name) { |
1826 | session_name = get_session_name(); | |
1827 | if (session_name == NULL) { | |
89476427 JRJ |
1828 | command_ret = CMD_ERROR; |
1829 | success = 0; | |
1830 | goto mi_closing; | |
cd80958d DG |
1831 | } |
1832 | } else { | |
1833 | session_name = opt_session_name; | |
1834 | } | |
1835 | ||
89476427 JRJ |
1836 | command_ret = enable_events(session_name); |
1837 | if (command_ret) { | |
1838 | success = 0; | |
1839 | goto mi_closing; | |
1840 | } | |
1841 | ||
1842 | mi_closing: | |
1843 | /* Mi closing */ | |
1844 | if (lttng_opt_mi) { | |
1845 | /* Close output element */ | |
1846 | ret = mi_lttng_writer_close_element(writer); | |
1847 | if (ret) { | |
1848 | ret = CMD_ERROR; | |
1849 | goto end; | |
1850 | } | |
1851 | ||
1852 | ret = mi_lttng_writer_write_element_bool(writer, | |
1853 | mi_lttng_element_command_success, success); | |
1854 | if (ret) { | |
1855 | ret = CMD_ERROR; | |
1856 | goto end; | |
1857 | } | |
1858 | ||
1859 | /* Command element close */ | |
1860 | ret = mi_lttng_writer_command_close(writer); | |
1861 | if (ret) { | |
1862 | ret = CMD_ERROR; | |
1863 | goto end; | |
1864 | } | |
1865 | } | |
f3ed775e DG |
1866 | |
1867 | end: | |
89476427 JRJ |
1868 | /* Mi clean-up */ |
1869 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1870 | /* Preserve original error code */ | |
1871 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1872 | } | |
1873 | ||
cd80958d DG |
1874 | if (opt_session_name == NULL) { |
1875 | free(session_name); | |
1876 | } | |
1877 | ||
89476427 JRJ |
1878 | /* Overwrite ret if an error occurred in enable_events */ |
1879 | ret = command_ret ? command_ret : ret; | |
1880 | ||
ca1c3607 | 1881 | poptFreeContext(pc); |
f3ed775e DG |
1882 | return ret; |
1883 | } | |
9f449915 | 1884 |