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 */ | |
88c91427 | 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) { | |
531be721 FD |
163 | /* |
164 | * Return an error if the first character of the tentative | |
165 | * address is NULL or not a digit. It can be "0" if the address | |
166 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
167 | */ | |
168 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
169 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 170 | ret = CMD_ERROR; |
8f0d098b | 171 | goto end; |
0d63dd19 | 172 | } |
8ff0bbd0 | 173 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 174 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
175 | ev->attr.probe.offset = 0; |
176 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 177 | goto end; |
0d63dd19 DG |
178 | } |
179 | ||
180 | /* No match */ | |
49d4e302 | 181 | ret = CMD_ERROR; |
0d63dd19 | 182 | |
8f0d098b | 183 | end: |
0d63dd19 DG |
184 | return ret; |
185 | } | |
186 | ||
dbc478f3 FD |
187 | /* |
188 | * Walk the directories in the PATH environment variable to find the target | |
189 | * binary passed as parameter. | |
190 | * | |
191 | * On success, the full path of the binary is copied in binary_full_path out | |
192 | * parameter. This buffer is allocated by the caller and must be at least | |
193 | * LTTNG_PATH_MAX bytes long. | |
194 | * On failure, returns -1; | |
195 | */ | |
196 | static int walk_command_search_path(const char *binary, char *binary_full_path) | |
197 | { | |
198 | char *tentative_binary_path = NULL; | |
199 | char *command_search_path = NULL; | |
200 | char *curr_search_dir_end = NULL; | |
201 | char *curr_search_dir = NULL; | |
202 | struct stat stat_output; | |
203 | int ret = 0; | |
204 | ||
205 | command_search_path = lttng_secure_getenv("PATH"); | |
206 | if (!command_search_path) { | |
207 | ret = -1; | |
208 | goto end; | |
209 | } | |
210 | ||
211 | /* | |
212 | * Duplicate the $PATH string as the char pointer returned by getenv() should | |
213 | * not be modified. | |
214 | */ | |
215 | command_search_path = strdup(command_search_path); | |
216 | if (!command_search_path) { | |
217 | ret = -1; | |
218 | goto end; | |
219 | } | |
220 | ||
221 | /* | |
222 | * This char array is used to concatenate path to binary to look for | |
223 | * the binary. | |
224 | */ | |
225 | tentative_binary_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
226 | if (!tentative_binary_path) { | |
227 | ret = -1; | |
228 | goto alloc_error; | |
229 | } | |
230 | ||
231 | curr_search_dir = command_search_path; | |
232 | do { | |
233 | /* | |
234 | * Split on ':'. The return value of this call points to the | |
235 | * matching character. | |
236 | */ | |
237 | curr_search_dir_end = strchr(curr_search_dir, ':'); | |
238 | if (curr_search_dir_end != NULL) { | |
239 | /* | |
240 | * Add a NULL byte to the end of the first token so it | |
241 | * can be used as a string. | |
242 | */ | |
243 | curr_search_dir_end[0] = '\0'; | |
244 | } | |
245 | ||
246 | /* Empty the tentative path */ | |
247 | memset(tentative_binary_path, 0, LTTNG_PATH_MAX * sizeof(char)); | |
248 | ||
249 | /* | |
250 | * Build the tentative path to the binary using the current | |
251 | * search directory and the name of the binary. | |
252 | */ | |
253 | ret = snprintf(tentative_binary_path, LTTNG_PATH_MAX, "%s/%s", | |
254 | curr_search_dir, binary); | |
255 | if (ret < 0) { | |
256 | goto free_binary_path; | |
257 | } | |
258 | if (ret < LTTNG_PATH_MAX) { | |
259 | /* | |
260 | * Use STAT(2) to see if the file exists. | |
261 | */ | |
262 | ret = stat(tentative_binary_path, &stat_output); | |
263 | if (ret == 0) { | |
264 | /* | |
265 | * Verify that it is a regular file or a | |
266 | * symlink and not a special file (e.g. | |
267 | * device). | |
268 | */ | |
269 | if (S_ISREG(stat_output.st_mode) | |
270 | || S_ISLNK(stat_output.st_mode)) { | |
271 | /* | |
272 | * Found a match, set the out parameter | |
273 | * and return success. | |
274 | */ | |
275 | ret = lttng_strncpy(binary_full_path, | |
276 | tentative_binary_path, | |
277 | LTTNG_PATH_MAX); | |
278 | if (ret == -1) { | |
279 | ERR("Source path does not fit " | |
280 | "in destination buffer."); | |
281 | } | |
282 | goto free_binary_path; | |
283 | } | |
284 | } | |
285 | } | |
286 | /* Go to the next entry in the $PATH variable. */ | |
287 | curr_search_dir = curr_search_dir_end + 1; | |
288 | } while (curr_search_dir_end != NULL); | |
289 | ||
290 | free_binary_path: | |
291 | free(tentative_binary_path); | |
292 | alloc_error: | |
293 | free(command_search_path); | |
294 | end: | |
295 | return ret; | |
296 | } | |
297 | ||
36aa2f64 FD |
298 | /* |
299 | * Check if the symbol field passed by the user is in fact an address or an | |
300 | * offset from a symbol. Those two instrumentation types are not supported yet. | |
301 | * It's expected to be a common mistake because of the existing --probe option | |
302 | * that does support these formats. | |
303 | * | |
304 | * Here are examples of these unsupported formats for the --userspace-probe | |
305 | * option: | |
306 | * elf:/path/to/binary:0x400430 | |
307 | * elf:/path/to/binary:4194364 | |
308 | * elf:/path/to/binary:my_symbol+0x323 | |
309 | * elf:/path/to/binary:my_symbol+43 | |
310 | */ | |
311 | static int warn_userspace_probe_syntax(const char *symbol) | |
312 | { | |
36aa2f64 FD |
313 | int ret; |
314 | ||
315 | /* Check if the symbol field is an hex address. */ | |
639d2823 | 316 | ret = sscanf(symbol, "0x%*x"); |
36aa2f64 FD |
317 | if (ret > 0) { |
318 | /* If there is a match, print a warning and return an error. */ | |
319 | ERR("Userspace probe on address not supported yet."); | |
320 | ret = CMD_UNSUPPORTED; | |
321 | goto error; | |
322 | } | |
323 | ||
324 | /* Check if the symbol field is an decimal address. */ | |
639d2823 | 325 | ret = sscanf(symbol, "%*u"); |
36aa2f64 FD |
326 | if (ret > 0) { |
327 | /* If there is a match, print a warning and return an error. */ | |
328 | ERR("Userspace probe on address not supported yet."); | |
329 | ret = CMD_UNSUPPORTED; | |
330 | goto error; | |
331 | } | |
332 | ||
333 | /* Check if the symbol field is symbol+hex_offset. */ | |
639d2823 | 334 | ret = sscanf(symbol, "%*[^+]+0x%*x"); |
36aa2f64 FD |
335 | if (ret > 0) { |
336 | /* If there is a match, print a warning and return an error. */ | |
337 | ERR("Userspace probe on symbol+offset not supported yet."); | |
338 | ret = CMD_UNSUPPORTED; | |
339 | goto error; | |
340 | } | |
341 | ||
342 | /* Check if the symbol field is symbol+decimal_offset. */ | |
639d2823 | 343 | ret = sscanf(symbol, "%*[^+]+%*u"); |
36aa2f64 FD |
344 | if (ret > 0) { |
345 | /* If there is a match, print a warning and return an error. */ | |
346 | ERR("Userspace probe on symbol+offset not supported yet."); | |
347 | ret = CMD_UNSUPPORTED; | |
348 | goto error; | |
349 | } | |
350 | ||
351 | ret = 0; | |
352 | ||
353 | error: | |
354 | return ret; | |
355 | } | |
356 | ||
dcabc190 FD |
357 | /* |
358 | * Parse userspace probe options | |
359 | * Set the userspace probe fields in the lttng_event struct and set the | |
360 | * target_path to the path to the binary. | |
361 | */ | |
362 | static int parse_userspace_probe_opts(struct lttng_event *ev, char *opt) | |
363 | { | |
364 | int ret = CMD_SUCCESS; | |
365 | int num_token; | |
366 | char **tokens; | |
367 | char *target_path = NULL; | |
368 | char *unescaped_target_path = NULL; | |
369 | char *real_target_path = NULL; | |
370 | char *symbol_name = NULL, *probe_name = NULL, *provider_name = NULL; | |
371 | struct lttng_userspace_probe_location *probe_location = NULL; | |
372 | struct lttng_userspace_probe_location_lookup_method *lookup_method = | |
373 | NULL; | |
374 | ||
375 | if (opt == NULL) { | |
376 | ret = CMD_ERROR; | |
377 | goto end; | |
378 | } | |
379 | ||
ebbcac93 FD |
380 | switch (ev->type) { |
381 | case LTTNG_EVENT_USERSPACE_PROBE: | |
382 | break; | |
383 | default: | |
384 | assert(0); | |
385 | } | |
386 | ||
dcabc190 FD |
387 | /* |
388 | * userspace probe fields are separated by ':'. | |
389 | */ | |
390 | tokens = strutils_split(opt, ':', 1); | |
391 | num_token = strutils_array_of_strings_len(tokens); | |
392 | ||
393 | /* | |
394 | * Early sanity check that the number of parameter is between 2 and 4 | |
395 | * inclusively. | |
396 | * elf:PATH:SYMBOL | |
397 | * std:PATH:PROVIDER_NAME:PROBE_NAME | |
398 | * PATH:SYMBOL (same behavior as ELF) | |
399 | */ | |
400 | if (num_token < 2 || num_token > 4) { | |
401 | ret = CMD_ERROR; | |
402 | goto end_string; | |
403 | } | |
404 | ||
405 | /* | |
406 | * Looking up the first parameter will tell the technique to use to | |
407 | * interpret the userspace probe/function description. | |
408 | */ | |
409 | switch (num_token) { | |
410 | case 2: | |
411 | /* When the probe type is omitted we assume ELF for now. */ | |
412 | case 3: | |
413 | if (num_token == 3 && strcmp(tokens[0], "elf") == 0) { | |
414 | target_path = tokens[1]; | |
415 | symbol_name = tokens[2]; | |
416 | } else if (num_token == 2) { | |
417 | target_path = tokens[0]; | |
418 | symbol_name = tokens[1]; | |
419 | } else { | |
420 | ret = CMD_ERROR; | |
421 | goto end_string; | |
422 | } | |
423 | lookup_method = | |
424 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
425 | if (!lookup_method) { | |
426 | WARN("Failed to create ELF lookup method"); | |
427 | ret = CMD_ERROR; | |
428 | goto end_string; | |
429 | } | |
430 | break; | |
431 | case 4: | |
432 | if (strcmp(tokens[0], "sdt") == 0) { | |
433 | target_path = tokens[1]; | |
434 | provider_name = tokens[2]; | |
435 | probe_name = tokens[3]; | |
436 | } else { | |
437 | ret = CMD_ERROR; | |
438 | goto end_string; | |
439 | } | |
440 | lookup_method = | |
441 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
442 | if (!lookup_method) { | |
b9e1aca7 | 443 | WARN("Failed to create SDT lookup method"); |
dcabc190 FD |
444 | ret = CMD_ERROR; |
445 | goto end_string; | |
446 | } | |
447 | break; | |
448 | default: | |
449 | ret = CMD_ERROR; | |
450 | goto end_string; | |
451 | } | |
452 | ||
453 | /* strutils_unescape_string allocates a new char *. */ | |
454 | unescaped_target_path = strutils_unescape_string(target_path, 0); | |
455 | if (!unescaped_target_path) { | |
36aa2f64 | 456 | ret = CMD_ERROR; |
ebbcac93 | 457 | goto end_destroy_lookup_method; |
dcabc190 FD |
458 | } |
459 | ||
460 | /* | |
461 | * If there is not forward slash in the path. Walk the $PATH else | |
462 | * expand. | |
463 | */ | |
ebbcac93 | 464 | if (strchr(unescaped_target_path, '/') == NULL) { |
dcabc190 FD |
465 | /* Walk the $PATH variable to find the targeted binary. */ |
466 | real_target_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
467 | if (!real_target_path) { | |
468 | PERROR("Error allocating path buffer"); | |
469 | ret = CMD_ERROR; | |
ebbcac93 | 470 | goto end_destroy_lookup_method; |
dcabc190 | 471 | } |
ebbcac93 | 472 | ret = walk_command_search_path(unescaped_target_path, real_target_path); |
dcabc190 FD |
473 | if (ret) { |
474 | ERR("Binary not found."); | |
475 | ret = CMD_ERROR; | |
ebbcac93 | 476 | goto end_destroy_lookup_method; |
dcabc190 FD |
477 | } |
478 | } else { | |
479 | /* | |
480 | * Expand references to `/./` and `/../`. This function does not check | |
ebbcac93 FD |
481 | * if the file exists. This call returns an allocated buffer on |
482 | * success. | |
dcabc190 | 483 | */ |
ebbcac93 | 484 | real_target_path = utils_expand_path_keep_symlink(unescaped_target_path); |
dcabc190 FD |
485 | if (!real_target_path) { |
486 | ERR("Error expanding the path to binary."); | |
487 | ret = CMD_ERROR; | |
ebbcac93 | 488 | goto end_destroy_lookup_method; |
dcabc190 FD |
489 | } |
490 | ||
491 | /* | |
54185c70 FD |
492 | * Check if the file exists using access(2), If it does not, |
493 | * return an error. | |
dcabc190 FD |
494 | */ |
495 | ret = access(real_target_path, F_OK); | |
496 | if (ret) { | |
bb77204a | 497 | ERR("Cannot find binary at path: %s.", real_target_path); |
dcabc190 | 498 | ret = CMD_ERROR; |
ebbcac93 | 499 | goto end_destroy_lookup_method; |
dcabc190 FD |
500 | } |
501 | } | |
502 | ||
503 | switch (lttng_userspace_probe_location_lookup_method_get_type(lookup_method)) { | |
504 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
36aa2f64 FD |
505 | /* |
506 | * Check for common mistakes in userspace probe description syntax. | |
507 | */ | |
508 | ret = warn_userspace_probe_syntax(symbol_name); | |
509 | if (ret) { | |
510 | goto end_destroy_lookup_method; | |
511 | } | |
512 | ||
dcabc190 FD |
513 | probe_location = lttng_userspace_probe_location_function_create( |
514 | real_target_path, symbol_name, lookup_method); | |
515 | if (!probe_location) { | |
516 | WARN("Failed to create function probe location"); | |
517 | ret = CMD_ERROR; | |
518 | goto end_destroy_lookup_method; | |
519 | } | |
520 | ||
521 | /* Ownership transferred to probe_location. */ | |
522 | lookup_method = NULL; | |
523 | ||
524 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
525 | if (ret) { | |
526 | WARN("Failed to set probe location on event"); | |
527 | ret = CMD_ERROR; | |
528 | goto end_destroy_location; | |
529 | } | |
530 | break; | |
531 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
532 | probe_location = lttng_userspace_probe_location_tracepoint_create( | |
533 | real_target_path, provider_name, probe_name, lookup_method); | |
534 | if (!probe_location) { | |
535 | WARN("Failed to create function probe location"); | |
536 | ret = CMD_ERROR; | |
537 | goto end_destroy_lookup_method; | |
538 | } | |
539 | ||
540 | /* Ownership transferred to probe_location. */ | |
541 | lookup_method = NULL; | |
542 | ||
543 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
544 | if (ret) { | |
545 | WARN("Failed to set probe location on event"); | |
546 | ret = CMD_ERROR; | |
547 | goto end_destroy_location; | |
548 | } | |
549 | break; | |
550 | default: | |
551 | ret = CMD_ERROR; | |
ebbcac93 | 552 | goto end_destroy_lookup_method; |
dcabc190 FD |
553 | } |
554 | ||
ebbcac93 FD |
555 | /* Successful parsing, now clean up everything and return. */ |
556 | goto end_string; | |
dcabc190 FD |
557 | |
558 | end_destroy_location: | |
559 | lttng_userspace_probe_location_destroy(probe_location); | |
560 | end_destroy_lookup_method: | |
561 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
ebbcac93 FD |
562 | end_string: |
563 | strutils_free_null_terminated_array_of_strings(tokens); | |
dcabc190 | 564 | /* |
ebbcac93 FD |
565 | * Freeing both char * here makes the error handling simplier. free() |
566 | * performs not action if the pointer is NULL. | |
dcabc190 FD |
567 | */ |
568 | free(real_target_path); | |
dcabc190 | 569 | free(unescaped_target_path); |
dcabc190 FD |
570 | end: |
571 | return ret; | |
572 | } | |
573 | ||
5cdb6027 DG |
574 | /* |
575 | * Maps LOG4j loglevel from string to value | |
576 | */ | |
577 | static int loglevel_log4j_str_to_value(const char *inputstr) | |
578 | { | |
579 | int i = 0; | |
580 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
581 | ||
3712b110 JG |
582 | if (!inputstr || strlen(inputstr) == 0) { |
583 | return -1; | |
584 | } | |
585 | ||
5cdb6027 DG |
586 | /* |
587 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
588 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
589 | */ | |
590 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
591 | str[i] = toupper(inputstr[i]); | |
592 | i++; | |
593 | } | |
594 | str[i] = '\0'; | |
595 | ||
596 | if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) { | |
597 | return LTTNG_LOGLEVEL_LOG4J_OFF; | |
598 | } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) { | |
599 | return LTTNG_LOGLEVEL_LOG4J_FATAL; | |
600 | } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) { | |
601 | return LTTNG_LOGLEVEL_LOG4J_ERROR; | |
602 | } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) { | |
603 | return LTTNG_LOGLEVEL_LOG4J_WARN; | |
604 | } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) { | |
605 | return LTTNG_LOGLEVEL_LOG4J_INFO; | |
606 | } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) { | |
607 | return LTTNG_LOGLEVEL_LOG4J_DEBUG; | |
608 | } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) { | |
609 | return LTTNG_LOGLEVEL_LOG4J_TRACE; | |
610 | } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) { | |
611 | return LTTNG_LOGLEVEL_LOG4J_ALL; | |
612 | } else { | |
613 | return -1; | |
614 | } | |
615 | } | |
616 | ||
b2064f54 DG |
617 | /* |
618 | * Maps JUL loglevel from string to value | |
619 | */ | |
620 | static int loglevel_jul_str_to_value(const char *inputstr) | |
621 | { | |
622 | int i = 0; | |
623 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
624 | ||
3712b110 JG |
625 | if (!inputstr || strlen(inputstr) == 0) { |
626 | return -1; | |
627 | } | |
628 | ||
b2064f54 DG |
629 | /* |
630 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
631 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
632 | */ | |
633 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
634 | str[i] = toupper(inputstr[i]); | |
635 | i++; | |
636 | } | |
637 | str[i] = '\0'; | |
638 | ||
639 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { | |
640 | return LTTNG_LOGLEVEL_JUL_OFF; | |
641 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { | |
642 | return LTTNG_LOGLEVEL_JUL_SEVERE; | |
643 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { | |
644 | return LTTNG_LOGLEVEL_JUL_WARNING; | |
645 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { | |
646 | return LTTNG_LOGLEVEL_JUL_INFO; | |
647 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { | |
648 | return LTTNG_LOGLEVEL_JUL_CONFIG; | |
649 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { | |
650 | return LTTNG_LOGLEVEL_JUL_FINE; | |
651 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { | |
652 | return LTTNG_LOGLEVEL_JUL_FINER; | |
653 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { | |
654 | return LTTNG_LOGLEVEL_JUL_FINEST; | |
655 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { | |
656 | return LTTNG_LOGLEVEL_JUL_ALL; | |
657 | } else { | |
658 | return -1; | |
659 | } | |
660 | } | |
661 | ||
0e115563 DG |
662 | /* |
663 | * Maps Python loglevel from string to value | |
664 | */ | |
665 | static int loglevel_python_str_to_value(const char *inputstr) | |
666 | { | |
667 | int i = 0; | |
668 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
669 | ||
3712b110 JG |
670 | if (!inputstr || strlen(inputstr) == 0) { |
671 | return -1; | |
672 | } | |
673 | ||
0e115563 DG |
674 | /* |
675 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
676 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
677 | */ | |
678 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
679 | str[i] = toupper(inputstr[i]); | |
680 | i++; | |
681 | } | |
682 | str[i] = '\0'; | |
683 | ||
684 | if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) { | |
685 | return LTTNG_LOGLEVEL_PYTHON_CRITICAL; | |
686 | } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) { | |
687 | return LTTNG_LOGLEVEL_PYTHON_ERROR; | |
688 | } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) { | |
689 | return LTTNG_LOGLEVEL_PYTHON_WARNING; | |
690 | } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) { | |
691 | return LTTNG_LOGLEVEL_PYTHON_INFO; | |
692 | } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) { | |
693 | return LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
694 | } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) { | |
695 | return LTTNG_LOGLEVEL_PYTHON_NOTSET; | |
696 | } else { | |
697 | return -1; | |
698 | } | |
699 | } | |
700 | ||
8005f29a | 701 | /* |
0c8477c8 | 702 | * Maps loglevel from string to value |
8005f29a MD |
703 | */ |
704 | static | |
46839cc2 | 705 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 706 | { |
46839cc2 MD |
707 | int i = 0; |
708 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
709 | ||
3712b110 JG |
710 | if (!inputstr || strlen(inputstr) == 0) { |
711 | return -1; | |
712 | } | |
713 | ||
e051e07c DG |
714 | /* |
715 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
716 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
717 | */ | |
718 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
719 | str[i] = toupper(inputstr[i]); |
720 | i++; | |
721 | } | |
722 | str[i] = '\0'; | |
723 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
724 | return LTTNG_LOGLEVEL_EMERG; | |
725 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
726 | return LTTNG_LOGLEVEL_ALERT; | |
727 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
728 | return LTTNG_LOGLEVEL_CRIT; | |
729 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
730 | return LTTNG_LOGLEVEL_ERR; | |
731 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
732 | return LTTNG_LOGLEVEL_WARNING; | |
733 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
734 | return LTTNG_LOGLEVEL_NOTICE; | |
735 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
736 | return LTTNG_LOGLEVEL_INFO; | |
737 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
738 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
739 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
740 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
741 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
742 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
743 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
744 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
745 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
746 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
747 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
748 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
749 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
750 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
751 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
752 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
753 | } else { |
754 | return -1; | |
755 | } | |
756 | } | |
757 | ||
85076754 MD |
758 | static |
759 | const char *print_channel_name(const char *name) | |
760 | { | |
761 | return name ? : DEFAULT_CHANNEL_NAME; | |
762 | } | |
763 | ||
764 | static | |
765 | const char *print_raw_channel_name(const char *name) | |
766 | { | |
767 | return name ? : "<default>"; | |
768 | } | |
769 | ||
89476427 JRJ |
770 | /* |
771 | * Mi print exlcusion list | |
772 | */ | |
773 | static | |
9f449915 | 774 | int mi_print_exclusion(char **names) |
89476427 JRJ |
775 | { |
776 | int i, ret; | |
9f449915 | 777 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
778 | |
779 | assert(writer); | |
780 | ||
781 | if (count == 0) { | |
782 | ret = 0; | |
783 | goto end; | |
784 | } | |
785 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
786 | if (ret) { | |
787 | goto end; | |
788 | } | |
789 | ||
790 | for (i = 0; i < count; i++) { | |
791 | ret = mi_lttng_writer_write_element_string(writer, | |
792 | config_element_exclusion, names[i]); | |
793 | if (ret) { | |
794 | goto end; | |
795 | } | |
796 | } | |
797 | ||
798 | /* Close exclusions element */ | |
799 | ret = mi_lttng_writer_close_element(writer); | |
800 | ||
801 | end: | |
802 | return ret; | |
803 | } | |
804 | ||
9c48cab3 JI |
805 | /* |
806 | * Return allocated string for pretty-printing exclusion names. | |
807 | */ | |
808 | static | |
9f449915 | 809 | char *print_exclusions(char **names) |
9c48cab3 JI |
810 | { |
811 | int length = 0; | |
812 | int i; | |
bfe36393 | 813 | const char preamble[] = " excluding "; |
9c48cab3 | 814 | char *ret; |
9f449915 | 815 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
816 | |
817 | if (count == 0) { | |
818 | return strdup(""); | |
819 | } | |
820 | ||
821 | /* calculate total required length */ | |
822 | for (i = 0; i < count; i++) { | |
9f449915 | 823 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
824 | } |
825 | ||
bfe36393 JG |
826 | length += sizeof(preamble); |
827 | ret = zmalloc(length); | |
fd591b18 MD |
828 | if (!ret) { |
829 | return NULL; | |
830 | } | |
9c48cab3 JI |
831 | strncpy(ret, preamble, length); |
832 | for (i = 0; i < count; i++) { | |
9f449915 | 833 | strcat(ret, "\""); |
9c48cab3 | 834 | strcat(ret, names[i]); |
9f449915 | 835 | strcat(ret, "\""); |
9c48cab3 | 836 | if (i != count - 1) { |
9f449915 | 837 | strcat(ret, ", "); |
9c48cab3 JI |
838 | } |
839 | } | |
89476427 | 840 | |
9c48cab3 JI |
841 | return ret; |
842 | } | |
843 | ||
748bde76 | 844 | static |
9f449915 | 845 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 846 | { |
9f449915 PP |
847 | bool warn = false; |
848 | int ret = 0; | |
849 | const char *e = event_name; | |
850 | const char *x = exclusion; | |
851 | ||
852 | /* Scan both the excluder and the event letter by letter */ | |
853 | while (true) { | |
854 | if (*e == '\\') { | |
855 | if (*x != *e) { | |
856 | warn = true; | |
857 | goto end; | |
858 | } | |
748bde76 | 859 | |
9f449915 PP |
860 | e++; |
861 | x++; | |
862 | goto cmp_chars; | |
863 | } | |
864 | ||
865 | if (*x == '*') { | |
866 | /* Event is a subset of the excluder */ | |
867 | ERR("Event %s: %s excludes all events from %s", | |
868 | event_name, exclusion, event_name); | |
869 | goto error; | |
870 | } | |
871 | ||
872 | if (*e == '*') { | |
873 | /* | |
874 | * Reached the end of the event name before the | |
875 | * end of the exclusion: this is valid. | |
876 | */ | |
877 | goto end; | |
878 | } | |
879 | ||
880 | cmp_chars: | |
881 | if (*x != *e) { | |
882 | warn = true; | |
883 | break; | |
884 | } | |
885 | ||
886 | x++; | |
887 | e++; | |
748bde76 JI |
888 | } |
889 | ||
9f449915 | 890 | goto end; |
748bde76 | 891 | |
9f449915 PP |
892 | error: |
893 | ret = -1; | |
748bde76 | 894 | |
9f449915 PP |
895 | end: |
896 | if (warn) { | |
897 | WARN("Event %s: %s does not exclude any events from %s", | |
898 | event_name, exclusion, event_name); | |
899 | } | |
748bde76 | 900 | |
9f449915 PP |
901 | return ret; |
902 | } | |
903 | ||
9f449915 PP |
904 | static |
905 | int create_exclusion_list_and_validate(const char *event_name, | |
906 | const char *exclusions_arg, | |
907 | char ***exclusion_list) | |
908 | { | |
909 | int ret = 0; | |
910 | char **exclusions = NULL; | |
911 | ||
912 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
913 | if (!strutils_is_star_glob_pattern(event_name)) { | |
914 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
915 | event_name); | |
916 | goto error; | |
917 | } | |
918 | ||
919 | /* Split exclusions. */ | |
920 | exclusions = strutils_split(exclusions_arg, ',', true); | |
921 | if (!exclusions) { | |
922 | goto error; | |
923 | } | |
924 | ||
925 | /* | |
926 | * If the event name is a star-at-end only globbing pattern, | |
927 | * then we can validate the individual exclusions. Otherwise | |
928 | * all exclusions are passed to the session daemon. | |
929 | */ | |
930 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
931 | char * const *exclusion; | |
932 | ||
933 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
934 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
935 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 936 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 937 | if (ret) { |
5ef79758 MD |
938 | goto error; |
939 | } | |
748bde76 | 940 | } |
748bde76 JI |
941 | } |
942 | } | |
9f449915 PP |
943 | |
944 | *exclusion_list = exclusions; | |
945 | ||
748bde76 | 946 | goto end; |
9f449915 | 947 | |
748bde76 | 948 | error: |
9f449915 PP |
949 | ret = -1; |
950 | strutils_free_null_terminated_array_of_strings(exclusions); | |
951 | ||
748bde76 | 952 | end: |
748bde76 JI |
953 | return ret; |
954 | } | |
502bbe89 | 955 | |
9f449915 PP |
956 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
957 | int *warn) | |
502bbe89 | 958 | { |
9f449915 | 959 | char * const *exclusion; |
502bbe89 | 960 | |
9f449915 PP |
961 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
962 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 963 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 964 | *exclusion); |
502bbe89 PP |
965 | *warn = 1; |
966 | } | |
967 | } | |
968 | } | |
969 | ||
f3ed775e | 970 | /* |
6181537c | 971 | * Enabling event using the lttng API. |
89476427 | 972 | * Note: in case of error only the last error code will be return. |
f3ed775e | 973 | */ |
cd80958d | 974 | static int enable_events(char *session_name) |
f3ed775e | 975 | { |
89476427 JRJ |
976 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
977 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 978 | char *event_name, *channel_name = NULL; |
91744e14 | 979 | struct lttng_event *ev; |
7d29a247 | 980 | struct lttng_domain dom; |
7ed70bc9 | 981 | char **exclusion_list = NULL; |
f3ed775e | 982 | |
441c16a7 MD |
983 | memset(&dom, 0, sizeof(dom)); |
984 | ||
91744e14 FD |
985 | ev = lttng_event_create(); |
986 | if (!ev) { | |
987 | ret = CMD_ERROR; | |
988 | goto error; | |
989 | } | |
990 | ||
53a80697 | 991 | if (opt_kernel) { |
67b58630 JG |
992 | if (opt_loglevel) { |
993 | WARN("Kernel loglevels are not supported."); | |
994 | } | |
53a80697 MD |
995 | } |
996 | ||
7d29a247 DG |
997 | /* Create lttng domain */ |
998 | if (opt_kernel) { | |
999 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 1000 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 1001 | } else if (opt_userspace) { |
2bdd86d4 | 1002 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 1003 | /* Default. */ |
8692d4e5 | 1004 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
1005 | } else if (opt_jul) { |
1006 | dom.type = LTTNG_DOMAIN_JUL; | |
1007 | /* Default. */ | |
1008 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
1009 | } else if (opt_log4j) { |
1010 | dom.type = LTTNG_DOMAIN_LOG4J; | |
1011 | /* Default. */ | |
1012 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
1013 | } else if (opt_python) { |
1014 | dom.type = LTTNG_DOMAIN_PYTHON; | |
1015 | /* Default. */ | |
1016 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 1017 | } else { |
3ecec76a PP |
1018 | /* Checked by the caller. */ |
1019 | assert(0); | |
2bdd86d4 | 1020 | } |
7d29a247 | 1021 | |
8b08c525 AB |
1022 | if (opt_exclude) { |
1023 | switch (dom.type) { | |
1024 | case LTTNG_DOMAIN_KERNEL: | |
1025 | case LTTNG_DOMAIN_JUL: | |
1026 | case LTTNG_DOMAIN_LOG4J: | |
1027 | case LTTNG_DOMAIN_PYTHON: | |
1028 | ERR("Event name exclusions are not yet implemented for %s events", | |
1029 | get_domain_str(dom.type)); | |
1030 | ret = CMD_ERROR; | |
1031 | goto error; | |
1032 | case LTTNG_DOMAIN_UST: | |
1033 | /* Exclusions supported */ | |
1034 | break; | |
1035 | default: | |
1036 | assert(0); | |
1037 | } | |
d5dd17fd JI |
1038 | } |
1039 | ||
4fd2697f FD |
1040 | /* |
1041 | * Adding a filter to a probe, function or userspace-probe would be | |
1042 | * denied by the kernel tracer as it's not supported at the moment. We | |
1043 | * do an early check here to warn the user. | |
1044 | */ | |
1045 | if (opt_filter && opt_kernel) { | |
1046 | switch (opt_event_type) { | |
1047 | case LTTNG_EVENT_ALL: | |
1048 | case LTTNG_EVENT_TRACEPOINT: | |
1049 | case LTTNG_EVENT_SYSCALL: | |
1050 | break; | |
1051 | case LTTNG_EVENT_PROBE: | |
1052 | case LTTNG_EVENT_USERSPACE_PROBE: | |
1053 | case LTTNG_EVENT_FUNCTION: | |
1054 | ERR("Filter expressions are not supported for %s events", | |
1055 | get_event_type_str(opt_event_type)); | |
1056 | ret = CMD_ERROR; | |
1057 | goto error; | |
1058 | default: | |
1059 | ret = CMD_UNDEFINED; | |
1060 | goto error; | |
1061 | } | |
1062 | } | |
1063 | ||
85076754 | 1064 | channel_name = opt_channel_name; |
ae856491 | 1065 | |
cd80958d DG |
1066 | handle = lttng_create_handle(session_name, &dom); |
1067 | if (handle == NULL) { | |
1068 | ret = -1; | |
1069 | goto error; | |
1070 | } | |
1aef21b6 | 1071 | |
89476427 JRJ |
1072 | /* Prepare Mi */ |
1073 | if (lttng_opt_mi) { | |
1074 | /* Open a events element */ | |
1075 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
1076 | if (ret) { | |
1077 | ret = CMD_ERROR; | |
1078 | goto error; | |
1079 | } | |
1080 | } | |
1081 | ||
cd80958d | 1082 | if (opt_enable_all) { |
8c9ae521 | 1083 | /* Default setup for enable all */ |
75e8c5ab | 1084 | if (opt_kernel) { |
91744e14 FD |
1085 | ev->type = opt_event_type; |
1086 | strcpy(ev->name, "*"); | |
300b8fd5 | 1087 | /* kernel loglevels not implemented */ |
91744e14 | 1088 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 1089 | } else { |
91744e14 FD |
1090 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1091 | strcpy(ev->name, "*"); | |
1092 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 1093 | if (opt_loglevel) { |
0e115563 | 1094 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1095 | if (opt_userspace) { |
91744e14 | 1096 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
b2064f54 | 1097 | } else if (opt_jul) { |
91744e14 | 1098 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1099 | } else if (opt_log4j) { |
91744e14 | 1100 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1101 | } else if (opt_python) { |
91744e14 | 1102 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
b2064f54 | 1103 | } |
91744e14 | 1104 | if (ev->loglevel == -1) { |
300b8fd5 | 1105 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1106 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
1107 | goto error; |
1108 | } | |
22e25b71 | 1109 | } else { |
0e115563 | 1110 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1111 | if (opt_userspace) { |
91744e14 | 1112 | ev->loglevel = -1; |
34aa3685 | 1113 | } else if (opt_jul) { |
91744e14 | 1114 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 1115 | } else if (opt_log4j) { |
91744e14 | 1116 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1117 | } else if (opt_python) { |
91744e14 | 1118 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 1119 | } |
300b8fd5 | 1120 | } |
75e8c5ab | 1121 | } |
8c9ae521 | 1122 | |
7ed70bc9 | 1123 | if (opt_exclude) { |
9f449915 PP |
1124 | ret = create_exclusion_list_and_validate("*", |
1125 | opt_exclude, &exclusion_list); | |
1126 | if (ret) { | |
1127 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1128 | goto error; |
1129 | } | |
502bbe89 | 1130 | |
91744e14 | 1131 | ev->exclusion = 1; |
502bbe89 | 1132 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 1133 | &warn); |
7ed70bc9 | 1134 | } |
025faf73 | 1135 | if (!opt_filter) { |
7ed70bc9 | 1136 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1137 | ev, channel_name, |
7ed70bc9 | 1138 | NULL, |
9f449915 PP |
1139 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
1140 | exclusion_list); | |
025faf73 DG |
1141 | if (ret < 0) { |
1142 | switch (-ret) { | |
1143 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
1144 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 1145 | print_channel_name(channel_name), session_name); |
89476427 | 1146 | warn = 1; |
025faf73 | 1147 | break; |
45d5d421 CB |
1148 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1149 | { | |
1150 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1151 | ERR("Events: %s (channel %s, session %s)", | |
1152 | msg, | |
1153 | print_channel_name(channel_name), | |
1154 | session_name); | |
1155 | error = 1; | |
1156 | break; | |
1157 | } | |
025faf73 DG |
1158 | default: |
1159 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
1160 | lttng_strerror(ret), |
1161 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
1162 | ? print_raw_channel_name(channel_name) | |
1163 | : print_channel_name(channel_name), | |
1164 | session_name); | |
89476427 | 1165 | error = 1; |
025faf73 DG |
1166 | break; |
1167 | } | |
1168 | goto end; | |
42224349 | 1169 | } |
8c9ae521 | 1170 | |
025faf73 DG |
1171 | switch (opt_event_type) { |
1172 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 1173 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1174 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1175 | |
1176 | if (!exclusion_string) { | |
1177 | PERROR("Cannot allocate exclusion_string"); | |
1178 | error = 1; | |
1179 | goto end; | |
1180 | } | |
9c48cab3 | 1181 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1182 | get_domain_str(dom.type), |
9c48cab3 | 1183 | exclusion_string, |
85076754 | 1184 | print_channel_name(channel_name), |
025faf73 | 1185 | opt_loglevel); |
9c48cab3 | 1186 | free(exclusion_string); |
025faf73 | 1187 | } else { |
9f449915 | 1188 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1189 | |
1190 | if (!exclusion_string) { | |
1191 | PERROR("Cannot allocate exclusion_string"); | |
1192 | error = 1; | |
1193 | goto end; | |
1194 | } | |
9c48cab3 | 1195 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 1196 | get_domain_str(dom.type), |
9c48cab3 | 1197 | exclusion_string, |
85076754 | 1198 | print_channel_name(channel_name)); |
9c48cab3 | 1199 | free(exclusion_string); |
025faf73 DG |
1200 | } |
1201 | break; | |
1202 | case LTTNG_EVENT_SYSCALL: | |
1203 | if (opt_kernel) { | |
6e911cad MD |
1204 | MSG("All %s system calls are enabled in channel %s", |
1205 | get_domain_str(dom.type), | |
85076754 | 1206 | print_channel_name(channel_name)); |
025faf73 DG |
1207 | } |
1208 | break; | |
1209 | case LTTNG_EVENT_ALL: | |
67b58630 | 1210 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1211 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1212 | |
1213 | if (!exclusion_string) { | |
1214 | PERROR("Cannot allocate exclusion_string"); | |
1215 | error = 1; | |
1216 | goto end; | |
1217 | } | |
9c48cab3 | 1218 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1219 | get_domain_str(dom.type), |
9c48cab3 | 1220 | exclusion_string, |
85076754 | 1221 | print_channel_name(channel_name), |
025faf73 | 1222 | opt_loglevel); |
9c48cab3 | 1223 | free(exclusion_string); |
025faf73 | 1224 | } else { |
9f449915 | 1225 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1226 | |
1227 | if (!exclusion_string) { | |
1228 | PERROR("Cannot allocate exclusion_string"); | |
1229 | error = 1; | |
1230 | goto end; | |
1231 | } | |
9c48cab3 | 1232 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 1233 | get_domain_str(dom.type), |
9c48cab3 | 1234 | exclusion_string, |
85076754 | 1235 | print_channel_name(channel_name)); |
9c48cab3 | 1236 | free(exclusion_string); |
025faf73 DG |
1237 | } |
1238 | break; | |
1239 | default: | |
1240 | /* | |
1241 | * We should not be here since lttng_enable_event should have | |
1242 | * failed on the event type. | |
1243 | */ | |
1244 | goto error; | |
57064ada | 1245 | } |
f3ed775e | 1246 | } |
89476427 | 1247 | |
025faf73 | 1248 | if (opt_filter) { |
91744e14 | 1249 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1250 | opt_filter, |
1251 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1252 | exclusion_list); | |
89476427 JRJ |
1253 | if (command_ret < 0) { |
1254 | switch (-command_ret) { | |
16363652 | 1255 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 1256 | WARN("Filter on all events is already enabled" |
16363652 | 1257 | " (channel %s, session %s)", |
85076754 | 1258 | print_channel_name(channel_name), session_name); |
89476427 | 1259 | warn = 1; |
16363652 | 1260 | break; |
45d5d421 CB |
1261 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1262 | { | |
1263 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1264 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
1265 | msg, | |
1266 | print_channel_name(channel_name), | |
1267 | session_name, opt_filter); | |
1268 | error = 1; | |
1269 | break; | |
1270 | } | |
16363652 | 1271 | default: |
85076754 | 1272 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
1273 | lttng_strerror(command_ret), |
1274 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1275 | ? print_raw_channel_name(channel_name) |
1276 | : print_channel_name(channel_name), | |
1277 | session_name, opt_filter); | |
89476427 | 1278 | error = 1; |
16363652 DG |
1279 | break; |
1280 | } | |
89476427 | 1281 | error_holder = command_ret; |
16363652 | 1282 | } else { |
91744e14 | 1283 | ev->filter = 1; |
16363652 DG |
1284 | MSG("Filter '%s' successfully set", opt_filter); |
1285 | } | |
1286 | } | |
89476427 JRJ |
1287 | |
1288 | if (lttng_opt_mi) { | |
1289 | /* The wildcard * is used for kernel and ust domain to | |
1290 | * represent ALL. We copy * in event name to force the wildcard use | |
1291 | * for kernel domain | |
1292 | * | |
1293 | * Note: this is strictly for semantic and printing while in | |
1294 | * machine interface mode. | |
1295 | */ | |
91744e14 | 1296 | strcpy(ev->name, "*"); |
89476427 JRJ |
1297 | |
1298 | /* If we reach here the events are enabled */ | |
1299 | if (!error && !warn) { | |
91744e14 | 1300 | ev->enabled = 1; |
89476427 | 1301 | } else { |
91744e14 | 1302 | ev->enabled = 0; |
89476427 JRJ |
1303 | success = 0; |
1304 | } | |
91744e14 | 1305 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1306 | if (ret) { |
1307 | ret = CMD_ERROR; | |
1308 | goto error; | |
1309 | } | |
1310 | ||
1311 | /* print exclusion */ | |
9f449915 | 1312 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1313 | if (ret) { |
1314 | ret = CMD_ERROR; | |
1315 | goto error; | |
1316 | } | |
1317 | ||
1318 | /* Success ? */ | |
1319 | ret = mi_lttng_writer_write_element_bool(writer, | |
1320 | mi_lttng_element_command_success, success); | |
1321 | if (ret) { | |
1322 | ret = CMD_ERROR; | |
1323 | goto error; | |
1324 | } | |
1325 | ||
1326 | /* Close event element */ | |
1327 | ret = mi_lttng_writer_close_element(writer); | |
1328 | if (ret) { | |
1329 | ret = CMD_ERROR; | |
1330 | goto error; | |
1331 | } | |
1332 | } | |
1333 | ||
8c9ae521 | 1334 | goto end; |
f3ed775e DG |
1335 | } |
1336 | ||
1337 | /* Strip event list */ | |
1338 | event_name = strtok(opt_event_list, ","); | |
1339 | while (event_name != NULL) { | |
6181537c | 1340 | /* Copy name and type of the event */ |
91744e14 FD |
1341 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
1342 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
1343 | ev->type = opt_event_type; | |
6181537c | 1344 | |
f3ed775e DG |
1345 | /* Kernel tracer action */ |
1346 | if (opt_kernel) { | |
1347 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
1348 | event_name, |
1349 | print_channel_name(channel_name)); | |
f3ed775e DG |
1350 | |
1351 | switch (opt_event_type) { | |
29c62722 MD |
1352 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
1353 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
1354 | if (strcmp(ev->name, "*")) { |
1355 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
1356 | } |
1357 | break; | |
e6ddca71 | 1358 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 1359 | break; |
7d29a247 | 1360 | case LTTNG_EVENT_PROBE: |
91744e14 | 1361 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 1362 | if (ret) { |
cf0e5467 | 1363 | ERR("Unable to parse probe options"); |
91744e14 | 1364 | ret = CMD_ERROR; |
0d63dd19 DG |
1365 | goto error; |
1366 | } | |
f3ed775e | 1367 | break; |
dcabc190 FD |
1368 | case LTTNG_EVENT_USERSPACE_PROBE: |
1369 | ret = parse_userspace_probe_opts(ev, opt_userspace_probe); | |
1370 | if (ret) { | |
36aa2f64 FD |
1371 | switch (ret) { |
1372 | case CMD_UNSUPPORTED: | |
1373 | /* | |
1374 | * Error message describing | |
1375 | * what is not supported was | |
1376 | * printed in the function. | |
1377 | */ | |
1378 | break; | |
1379 | case CMD_ERROR: | |
1380 | default: | |
1381 | ERR("Unable to parse userspace probe options"); | |
1382 | break; | |
1383 | } | |
dcabc190 FD |
1384 | goto error; |
1385 | } | |
1386 | break; | |
f3ed775e | 1387 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 1388 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 1389 | if (ret) { |
8f0d098b | 1390 | ERR("Unable to parse function probe options"); |
91744e14 | 1391 | ret = CMD_ERROR; |
8f0d098b MD |
1392 | goto error; |
1393 | } | |
1394 | break; | |
a54bd42d | 1395 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 1396 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 1397 | break; |
f3ed775e | 1398 | default: |
1ab1ea0b | 1399 | ret = CMD_UNDEFINED; |
f3ed775e DG |
1400 | goto error; |
1401 | } | |
0cda4f28 | 1402 | |
0cda4f28 | 1403 | /* kernel loglevels not implemented */ |
91744e14 | 1404 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 1405 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 1406 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 1407 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
1408 | |
1409 | switch (opt_event_type) { | |
1410 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
1411 | /* Fall-through */ |
1412 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 1413 | /* Copy name and type of the event */ |
91744e14 FD |
1414 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1415 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1416 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
1417 | break; |
1418 | case LTTNG_EVENT_PROBE: | |
1419 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 1420 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 1421 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 1422 | default: |
cc62c0c0 | 1423 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 1424 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
1425 | goto error; |
1426 | } | |
0cda4f28 | 1427 | |
7ed70bc9 | 1428 | if (opt_exclude) { |
91744e14 | 1429 | ev->exclusion = 1; |
d5dd17fd JI |
1430 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
1431 | ERR("Exclusion option can only be used with tracepoint events"); | |
1432 | ret = CMD_ERROR; | |
1433 | goto error; | |
1434 | } | |
7ed70bc9 | 1435 | /* Free previously allocated items */ |
9f449915 PP |
1436 | strutils_free_null_terminated_array_of_strings( |
1437 | exclusion_list); | |
1438 | exclusion_list = NULL; | |
1439 | ret = create_exclusion_list_and_validate( | |
1440 | event_name, opt_exclude, | |
1441 | &exclusion_list); | |
1442 | if (ret) { | |
1443 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1444 | goto error; |
1445 | } | |
502bbe89 PP |
1446 | |
1447 | warn_on_truncated_exclusion_names( | |
9f449915 | 1448 | exclusion_list, &warn); |
7ed70bc9 JI |
1449 | } |
1450 | ||
91744e14 | 1451 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 1452 | if (opt_loglevel) { |
91744e14 FD |
1453 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
1454 | if (ev->loglevel == -1) { | |
8005f29a | 1455 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1456 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
1457 | goto error; |
1458 | } | |
22e25b71 | 1459 | } else { |
91744e14 | 1460 | ev->loglevel = -1; |
ed7f4083 | 1461 | } |
0e115563 | 1462 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
1463 | if (opt_event_type != LTTNG_EVENT_ALL && |
1464 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 1465 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
1466 | ret = CMD_UNSUPPORTED; |
1467 | goto error; | |
1468 | } | |
b2064f54 | 1469 | |
91744e14 | 1470 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 1471 | if (opt_loglevel) { |
5cdb6027 | 1472 | if (opt_jul) { |
91744e14 | 1473 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1474 | } else if (opt_log4j) { |
91744e14 | 1475 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1476 | } else if (opt_python) { |
91744e14 | 1477 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
5cdb6027 | 1478 | } |
91744e14 | 1479 | if (ev->loglevel == -1) { |
b2064f54 DG |
1480 | ERR("Unknown loglevel %s", opt_loglevel); |
1481 | ret = -LTTNG_ERR_INVALID; | |
1482 | goto error; | |
1483 | } | |
1484 | } else { | |
5cdb6027 | 1485 | if (opt_jul) { |
91744e14 | 1486 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 1487 | } else if (opt_log4j) { |
91744e14 | 1488 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1489 | } else if (opt_python) { |
91744e14 | 1490 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 1491 | } |
b2064f54 | 1492 | } |
91744e14 FD |
1493 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1494 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1495 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1496 | } else { |
3ecec76a | 1497 | assert(0); |
f3ed775e DG |
1498 | } |
1499 | ||
025faf73 | 1500 | if (!opt_filter) { |
9c48cab3 JI |
1501 | char *exclusion_string; |
1502 | ||
89476427 | 1503 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1504 | ev, channel_name, |
9f449915 PP |
1505 | NULL, |
1506 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1507 | exclusion_list); | |
1508 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1509 | if (!exclusion_string) { |
1510 | PERROR("Cannot allocate exclusion_string"); | |
1511 | error = 1; | |
1512 | goto end; | |
1513 | } | |
89476427 | 1514 | if (command_ret < 0) { |
025faf73 | 1515 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1516 | switch (-command_ret) { |
025faf73 | 1517 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1518 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1519 | event_name, |
9c48cab3 | 1520 | exclusion_string, |
85076754 | 1521 | print_channel_name(channel_name), session_name); |
89476427 | 1522 | warn = 1; |
025faf73 | 1523 | break; |
45d5d421 CB |
1524 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1525 | { | |
1526 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1527 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1528 | exclusion_string, | |
1529 | msg, | |
1530 | print_channel_name(channel_name), | |
1531 | session_name); | |
1532 | error = 1; | |
1533 | break; | |
1534 | } | |
dcabc190 FD |
1535 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1536 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1537 | event_name, print_channel_name(channel_name), | |
1538 | session_name); | |
1539 | error = 1; | |
1540 | break; | |
025faf73 | 1541 | default: |
9c48cab3 JI |
1542 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1543 | exclusion_string, | |
da3d7d0e JRJ |
1544 | lttng_strerror(command_ret), |
1545 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1546 | ? print_raw_channel_name(channel_name) |
1547 | : print_channel_name(channel_name), | |
1548 | session_name); | |
89476427 | 1549 | error = 1; |
025faf73 DG |
1550 | break; |
1551 | } | |
89476427 | 1552 | error_holder = command_ret; |
025faf73 | 1553 | } else { |
8274eeba AB |
1554 | switch (dom.type) { |
1555 | case LTTNG_DOMAIN_KERNEL: | |
1556 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1557 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1558 | get_domain_str(dom.type), |
1559 | event_name, | |
1560 | exclusion_string, | |
1561 | print_channel_name(channel_name)); | |
1562 | break; | |
1563 | case LTTNG_DOMAIN_JUL: | |
1564 | case LTTNG_DOMAIN_LOG4J: | |
1565 | case LTTNG_DOMAIN_PYTHON: | |
1566 | /* | |
1567 | * Don't print the default channel | |
1568 | * name for agent domains. | |
1569 | */ | |
895707da | 1570 | MSG("%s event %s%s enabled", |
8274eeba AB |
1571 | get_domain_str(dom.type), |
1572 | event_name, | |
1573 | exclusion_string); | |
1574 | break; | |
1575 | default: | |
1576 | assert(0); | |
49ceaa70 | 1577 | } |
42224349 | 1578 | } |
9c48cab3 | 1579 | free(exclusion_string); |
6181537c | 1580 | } |
025faf73 DG |
1581 | |
1582 | if (opt_filter) { | |
9c48cab3 JI |
1583 | char *exclusion_string; |
1584 | ||
89476427 | 1585 | /* Filter present */ |
91744e14 | 1586 | ev->filter = 1; |
89476427 | 1587 | |
91744e14 | 1588 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1589 | opt_filter, |
1590 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1591 | exclusion_list); | |
1592 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1593 | if (!exclusion_string) { |
1594 | PERROR("Cannot allocate exclusion_string"); | |
1595 | error = 1; | |
1596 | goto end; | |
1597 | } | |
89476427 JRJ |
1598 | if (command_ret < 0) { |
1599 | switch (-command_ret) { | |
7671f53c | 1600 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1601 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1602 | " (channel %s, session %s)", |
85076754 | 1603 | event_name, |
9c48cab3 | 1604 | exclusion_string, |
85076754 | 1605 | print_channel_name(channel_name), session_name); |
89476427 | 1606 | warn = 1; |
7671f53c | 1607 | break; |
45d5d421 CB |
1608 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1609 | { | |
1610 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1611 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1612 | exclusion_string, |
1613 | msg, | |
1614 | print_channel_name(channel_name), | |
1615 | session_name, opt_filter); | |
1616 | error = 1; | |
1617 | break; | |
1618 | } | |
7671f53c | 1619 | default: |
91744e14 | 1620 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1621 | exclusion_string, |
da3d7d0e JRJ |
1622 | lttng_strerror(command_ret), |
1623 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1624 | ? print_raw_channel_name(channel_name) |
1625 | : print_channel_name(channel_name), | |
1626 | session_name, opt_filter); | |
89476427 | 1627 | error = 1; |
7671f53c CB |
1628 | break; |
1629 | } | |
89476427 JRJ |
1630 | error_holder = command_ret; |
1631 | ||
16363652 | 1632 | } else { |
9c48cab3 JI |
1633 | MSG("Event %s%s: Filter '%s' successfully set", |
1634 | event_name, exclusion_string, | |
1635 | opt_filter); | |
53a80697 | 1636 | } |
9c48cab3 | 1637 | free(exclusion_string); |
53a80697 | 1638 | } |
6181537c | 1639 | |
89476427 JRJ |
1640 | if (lttng_opt_mi) { |
1641 | if (command_ret) { | |
1642 | success = 0; | |
91744e14 | 1643 | ev->enabled = 0; |
89476427 | 1644 | } else { |
91744e14 | 1645 | ev->enabled = 1; |
89476427 JRJ |
1646 | } |
1647 | ||
91744e14 | 1648 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1649 | if (ret) { |
1650 | ret = CMD_ERROR; | |
1651 | goto error; | |
1652 | } | |
1653 | ||
1654 | /* print exclusion */ | |
9f449915 | 1655 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1656 | if (ret) { |
1657 | ret = CMD_ERROR; | |
1658 | goto error; | |
1659 | } | |
1660 | ||
1661 | /* Success ? */ | |
1662 | ret = mi_lttng_writer_write_element_bool(writer, | |
1663 | mi_lttng_element_command_success, success); | |
1664 | if (ret) { | |
1665 | ret = CMD_ERROR; | |
1666 | goto end; | |
1667 | } | |
1668 | ||
1669 | /* Close event element */ | |
1670 | ret = mi_lttng_writer_close_element(writer); | |
1671 | if (ret) { | |
1672 | ret = CMD_ERROR; | |
1673 | goto end; | |
1674 | } | |
1675 | } | |
1676 | ||
f3ed775e DG |
1677 | /* Next event */ |
1678 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1679 | /* Reset warn, error and success */ |
1680 | success = 1; | |
f3ed775e DG |
1681 | } |
1682 | ||
8c9ae521 | 1683 | end: |
89476427 JRJ |
1684 | /* Close Mi */ |
1685 | if (lttng_opt_mi) { | |
1686 | /* Close events element */ | |
1687 | ret = mi_lttng_writer_close_element(writer); | |
1688 | if (ret) { | |
1689 | ret = CMD_ERROR; | |
1690 | goto error; | |
1691 | } | |
1692 | } | |
f3ed775e | 1693 | error: |
ae856491 DG |
1694 | if (warn) { |
1695 | ret = CMD_WARNING; | |
1696 | } | |
89476427 JRJ |
1697 | if (error) { |
1698 | ret = CMD_ERROR; | |
1699 | } | |
cd80958d | 1700 | lttng_destroy_handle(handle); |
9f449915 | 1701 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
7ed70bc9 | 1702 | |
89476427 JRJ |
1703 | /* Overwrite ret with error_holder if there was an actual error with |
1704 | * enabling an event. | |
1705 | */ | |
1706 | ret = error_holder ? error_holder : ret; | |
1707 | ||
91744e14 | 1708 | lttng_event_destroy(ev); |
f3ed775e DG |
1709 | return ret; |
1710 | } | |
1711 | ||
1712 | /* | |
6181537c | 1713 | * Add event to trace session |
f3ed775e DG |
1714 | */ |
1715 | int cmd_enable_events(int argc, const char **argv) | |
1716 | { | |
89476427 | 1717 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1718 | static poptContext pc; |
cd80958d | 1719 | char *session_name = NULL; |
68c7f6e5 | 1720 | const char *leftover = NULL; |
de044b7a | 1721 | int event_type = -1; |
f3ed775e DG |
1722 | |
1723 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1724 | poptReadDefaultConfig(pc, 0); | |
1725 | ||
1726 | /* Default event type */ | |
7a3d1328 | 1727 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1728 | |
1729 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1730 | switch (opt) { | |
1731 | case OPT_HELP: | |
4ba92f18 | 1732 | SHOW_HELP(); |
f3ed775e | 1733 | goto end; |
f3ed775e | 1734 | case OPT_TRACEPOINT: |
e6ddca71 | 1735 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1736 | break; |
cf0e5467 | 1737 | case OPT_PROBE: |
7d29a247 | 1738 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1739 | break; |
dcabc190 FD |
1740 | case OPT_USERSPACE_PROBE: |
1741 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1742 | break; | |
f3ed775e DG |
1743 | case OPT_FUNCTION: |
1744 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1745 | break; |
a54bd42d MD |
1746 | case OPT_SYSCALL: |
1747 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1748 | break; |
eeac7d46 MD |
1749 | case OPT_USERSPACE: |
1750 | opt_userspace = 1; | |
eeac7d46 | 1751 | break; |
0cda4f28 | 1752 | case OPT_LOGLEVEL: |
8005f29a | 1753 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1754 | opt_loglevel = poptGetOptArg(pc); |
1755 | break; | |
1756 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1757 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1758 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1759 | break; |
679b4943 SM |
1760 | case OPT_LIST_OPTIONS: |
1761 | list_cmd_options(stdout, long_options); | |
679b4943 | 1762 | goto end; |
53a80697 MD |
1763 | case OPT_FILTER: |
1764 | break; | |
fac3366c JI |
1765 | case OPT_EXCLUDE: |
1766 | break; | |
f3ed775e | 1767 | default: |
f3ed775e DG |
1768 | ret = CMD_UNDEFINED; |
1769 | goto end; | |
1770 | } | |
de044b7a DG |
1771 | |
1772 | /* Validate event type. Multiple event type are not supported. */ | |
1773 | if (event_type == -1) { | |
1774 | event_type = opt_event_type; | |
1775 | } else { | |
1776 | if (event_type != opt_event_type) { | |
1777 | ERR("Multiple event type not supported."); | |
1778 | ret = CMD_ERROR; | |
1779 | goto end; | |
1780 | } | |
1781 | } | |
f3ed775e DG |
1782 | } |
1783 | ||
3ecec76a PP |
1784 | ret = print_missing_or_multiple_domains( |
1785 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python); | |
1786 | if (ret) { | |
1787 | ret = CMD_ERROR; | |
1788 | goto end; | |
1789 | } | |
1790 | ||
89476427 JRJ |
1791 | /* Mi check */ |
1792 | if (lttng_opt_mi) { | |
1793 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1794 | if (!writer) { | |
1795 | ret = -LTTNG_ERR_NOMEM; | |
1796 | goto end; | |
1797 | } | |
1798 | ||
1799 | /* Open command element */ | |
1800 | ret = mi_lttng_writer_command_open(writer, | |
1801 | mi_lttng_element_command_enable_event); | |
1802 | if (ret) { | |
1803 | ret = CMD_ERROR; | |
1804 | goto end; | |
1805 | } | |
1806 | ||
1807 | /* Open output element */ | |
1808 | ret = mi_lttng_writer_open_element(writer, | |
1809 | mi_lttng_element_command_output); | |
1810 | if (ret) { | |
1811 | ret = CMD_ERROR; | |
1812 | goto end; | |
1813 | } | |
1814 | } | |
1815 | ||
f3ed775e DG |
1816 | opt_event_list = (char*) poptGetArg(pc); |
1817 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1818 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1819 | ret = CMD_ERROR; |
f3ed775e DG |
1820 | goto end; |
1821 | } | |
1822 | ||
68c7f6e5 JD |
1823 | leftover = poptGetArg(pc); |
1824 | if (leftover) { | |
1825 | ERR("Unknown argument: %s", leftover); | |
1826 | ret = CMD_ERROR; | |
1827 | goto end; | |
1828 | } | |
1829 | ||
cd80958d DG |
1830 | if (!opt_session_name) { |
1831 | session_name = get_session_name(); | |
1832 | if (session_name == NULL) { | |
89476427 JRJ |
1833 | command_ret = CMD_ERROR; |
1834 | success = 0; | |
1835 | goto mi_closing; | |
cd80958d DG |
1836 | } |
1837 | } else { | |
1838 | session_name = opt_session_name; | |
1839 | } | |
1840 | ||
89476427 JRJ |
1841 | command_ret = enable_events(session_name); |
1842 | if (command_ret) { | |
1843 | success = 0; | |
1844 | goto mi_closing; | |
1845 | } | |
1846 | ||
1847 | mi_closing: | |
1848 | /* Mi closing */ | |
1849 | if (lttng_opt_mi) { | |
1850 | /* Close output element */ | |
1851 | ret = mi_lttng_writer_close_element(writer); | |
1852 | if (ret) { | |
1853 | ret = CMD_ERROR; | |
1854 | goto end; | |
1855 | } | |
1856 | ||
1857 | ret = mi_lttng_writer_write_element_bool(writer, | |
1858 | mi_lttng_element_command_success, success); | |
1859 | if (ret) { | |
1860 | ret = CMD_ERROR; | |
1861 | goto end; | |
1862 | } | |
1863 | ||
1864 | /* Command element close */ | |
1865 | ret = mi_lttng_writer_command_close(writer); | |
1866 | if (ret) { | |
1867 | ret = CMD_ERROR; | |
1868 | goto end; | |
1869 | } | |
1870 | } | |
f3ed775e DG |
1871 | |
1872 | end: | |
89476427 JRJ |
1873 | /* Mi clean-up */ |
1874 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1875 | /* Preserve original error code */ | |
1876 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1877 | } | |
1878 | ||
cd80958d DG |
1879 | if (opt_session_name == NULL) { |
1880 | free(session_name); | |
1881 | } | |
1882 | ||
89476427 JRJ |
1883 | /* Overwrite ret if an error occurred in enable_events */ |
1884 | ret = command_ret ? command_ret : ret; | |
1885 | ||
ca1c3607 | 1886 | poptFreeContext(pc); |
f3ed775e DG |
1887 | return ret; |
1888 | } | |
9f449915 | 1889 |