Commit | Line | Data |
---|---|---|
f3ed775e | 1 | /* |
a4eb26f0 | 2 | * Copyright (C) 2011 EfficiOS Inc. |
f3ed775e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f3ed775e | 5 | * |
f3ed775e DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
b2064f54 | 9 | #include <assert.h> |
f3ed775e DG |
10 | #include <popt.h> |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
f3ed775e DG |
13 | #include <sys/stat.h> |
14 | #include <sys/types.h> | |
15 | #include <unistd.h> | |
5a0de755 | 16 | #include <inttypes.h> |
8f0d098b | 17 | #include <ctype.h> |
f3ed775e | 18 | |
343af227 | 19 | #include <common/sessiond-comm/sessiond-comm.h> |
f5436bfc | 20 | #include <common/compat/string.h> |
dbc478f3 | 21 | #include <common/compat/getenv.h> |
9f449915 | 22 | #include <common/string-utils/string-utils.h> |
dbc478f3 | 23 | #include <common/utils.h> |
e40c873f | 24 | #include <common/path.h> |
f3ed775e | 25 | |
dbc478f3 | 26 | #include <lttng/constant.h> |
89476427 JRJ |
27 | /* Mi dependancy */ |
28 | #include <common/mi-lttng.h> | |
29 | ||
30 | #include "../command.h" | |
31 | ||
8ab7c0d9 MD |
32 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
33 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
34 | #endif | |
35 | ||
f3ed775e DG |
36 | static char *opt_event_list; |
37 | static int opt_event_type; | |
0cda4f28 MD |
38 | static const char *opt_loglevel; |
39 | static int opt_loglevel_type; | |
6181537c | 40 | static int opt_kernel; |
5440dc42 | 41 | static char *opt_session_name; |
f3ed775e | 42 | static int opt_userspace; |
b9dfb167 | 43 | static int opt_jul; |
5cdb6027 | 44 | static int opt_log4j; |
0e115563 | 45 | static int opt_python; |
f3ed775e | 46 | static int opt_enable_all; |
cf0e5467 | 47 | static char *opt_probe; |
dcabc190 | 48 | static char *opt_userspace_probe; |
8f0d098b | 49 | static char *opt_function; |
f3ed775e | 50 | static char *opt_channel_name; |
53a80697 | 51 | static char *opt_filter; |
fac3366c | 52 | static char *opt_exclude; |
f3ed775e | 53 | |
4fc83d94 PP |
54 | #ifdef LTTNG_EMBED_HELP |
55 | static const char help_msg[] = | |
56 | #include <lttng-enable-event.1.h> | |
57 | ; | |
58 | #endif | |
59 | ||
f3ed775e DG |
60 | enum { |
61 | OPT_HELP = 1, | |
f3ed775e | 62 | OPT_TRACEPOINT, |
cf0e5467 | 63 | OPT_PROBE, |
dcabc190 | 64 | OPT_USERSPACE_PROBE, |
f3ed775e | 65 | OPT_FUNCTION, |
a54bd42d | 66 | OPT_SYSCALL, |
eeac7d46 | 67 | OPT_USERSPACE, |
0cda4f28 MD |
68 | OPT_LOGLEVEL, |
69 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 70 | OPT_LIST_OPTIONS, |
53a80697 | 71 | OPT_FILTER, |
fac3366c | 72 | OPT_EXCLUDE, |
f3ed775e DG |
73 | }; |
74 | ||
cd80958d | 75 | static struct lttng_handle *handle; |
89476427 | 76 | static struct mi_writer *writer; |
cd80958d | 77 | |
f3ed775e DG |
78 | static struct poptOption long_options[] = { |
79 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
80 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 81 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 82 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
83 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
84 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 85 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 86 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 87 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 88 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
f3ed775e | 89 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 90 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
dcabc190 | 91 | {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0}, |
40e9d5d3 | 92 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
7ebae521 | 93 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
94 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
95 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 96 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 97 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 98 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
99 | {0, 0, 0, 0, 0, 0, 0} |
100 | }; | |
101 | ||
0d63dd19 | 102 | /* |
6181537c | 103 | * Parse probe options. |
0d63dd19 | 104 | */ |
cf0e5467 | 105 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 106 | { |
49d4e302 JRJ |
107 | int ret = CMD_SUCCESS; |
108 | int match; | |
8ff0bbd0 | 109 | char s_hex[19]; |
8ab7c0d9 | 110 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
111 | char name[LTTNG_SYMBOL_NAME_LEN]; |
112 | ||
113 | if (opt == NULL) { | |
49d4e302 | 114 | ret = CMD_ERROR; |
8f0d098b | 115 | goto end; |
0d63dd19 DG |
116 | } |
117 | ||
118 | /* Check for symbol+offset */ | |
49d4e302 | 119 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 120 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 121 | if (match == 2) { |
7d29a247 | 122 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 123 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 124 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 125 | if (*s_hex == '\0') { |
8ff0bbd0 | 126 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 127 | ret = CMD_ERROR; |
8f0d098b | 128 | goto end; |
0d63dd19 | 129 | } |
8ff0bbd0 | 130 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 131 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 132 | ev->attr.probe.addr = 0; |
8f0d098b MD |
133 | goto end; |
134 | } | |
135 | ||
136 | /* Check for symbol */ | |
88c91427 | 137 | if (isalpha(name[0]) || name[0] == '_') { |
49d4e302 | 138 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 139 | name); |
49d4e302 | 140 | if (match == 1) { |
8f0d098b | 141 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 142 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
143 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
144 | ev->attr.probe.offset = 0; | |
145 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
146 | ev->attr.probe.addr = 0; | |
147 | goto end; | |
148 | } | |
0d63dd19 DG |
149 | } |
150 | ||
151 | /* Check for address */ | |
49d4e302 JRJ |
152 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
153 | if (match > 0) { | |
531be721 FD |
154 | /* |
155 | * Return an error if the first character of the tentative | |
156 | * address is NULL or not a digit. It can be "0" if the address | |
157 | * is in hexadecimal and can be 1 to 9 if it's in decimal. | |
158 | */ | |
159 | if (*s_hex == '\0' || !isdigit(*s_hex)) { | |
160 | ERR("Invalid probe description %s", s_hex); | |
49d4e302 | 161 | ret = CMD_ERROR; |
8f0d098b | 162 | goto end; |
0d63dd19 | 163 | } |
8ff0bbd0 | 164 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 165 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
166 | ev->attr.probe.offset = 0; |
167 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 168 | goto end; |
0d63dd19 DG |
169 | } |
170 | ||
171 | /* No match */ | |
49d4e302 | 172 | ret = CMD_ERROR; |
0d63dd19 | 173 | |
8f0d098b | 174 | end: |
0d63dd19 DG |
175 | return ret; |
176 | } | |
177 | ||
dbc478f3 FD |
178 | /* |
179 | * Walk the directories in the PATH environment variable to find the target | |
180 | * binary passed as parameter. | |
181 | * | |
182 | * On success, the full path of the binary is copied in binary_full_path out | |
183 | * parameter. This buffer is allocated by the caller and must be at least | |
184 | * LTTNG_PATH_MAX bytes long. | |
185 | * On failure, returns -1; | |
186 | */ | |
187 | static int walk_command_search_path(const char *binary, char *binary_full_path) | |
188 | { | |
189 | char *tentative_binary_path = NULL; | |
190 | char *command_search_path = NULL; | |
191 | char *curr_search_dir_end = NULL; | |
192 | char *curr_search_dir = NULL; | |
193 | struct stat stat_output; | |
194 | int ret = 0; | |
195 | ||
196 | command_search_path = lttng_secure_getenv("PATH"); | |
197 | if (!command_search_path) { | |
198 | ret = -1; | |
199 | goto end; | |
200 | } | |
201 | ||
202 | /* | |
203 | * Duplicate the $PATH string as the char pointer returned by getenv() should | |
204 | * not be modified. | |
205 | */ | |
206 | command_search_path = strdup(command_search_path); | |
207 | if (!command_search_path) { | |
208 | ret = -1; | |
209 | goto end; | |
210 | } | |
211 | ||
212 | /* | |
213 | * This char array is used to concatenate path to binary to look for | |
214 | * the binary. | |
215 | */ | |
216 | tentative_binary_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
217 | if (!tentative_binary_path) { | |
218 | ret = -1; | |
219 | goto alloc_error; | |
220 | } | |
221 | ||
222 | curr_search_dir = command_search_path; | |
223 | do { | |
224 | /* | |
225 | * Split on ':'. The return value of this call points to the | |
226 | * matching character. | |
227 | */ | |
228 | curr_search_dir_end = strchr(curr_search_dir, ':'); | |
229 | if (curr_search_dir_end != NULL) { | |
230 | /* | |
231 | * Add a NULL byte to the end of the first token so it | |
232 | * can be used as a string. | |
233 | */ | |
234 | curr_search_dir_end[0] = '\0'; | |
235 | } | |
236 | ||
237 | /* Empty the tentative path */ | |
238 | memset(tentative_binary_path, 0, LTTNG_PATH_MAX * sizeof(char)); | |
239 | ||
240 | /* | |
241 | * Build the tentative path to the binary using the current | |
242 | * search directory and the name of the binary. | |
243 | */ | |
244 | ret = snprintf(tentative_binary_path, LTTNG_PATH_MAX, "%s/%s", | |
245 | curr_search_dir, binary); | |
246 | if (ret < 0) { | |
247 | goto free_binary_path; | |
248 | } | |
249 | if (ret < LTTNG_PATH_MAX) { | |
250 | /* | |
251 | * Use STAT(2) to see if the file exists. | |
252 | */ | |
253 | ret = stat(tentative_binary_path, &stat_output); | |
254 | if (ret == 0) { | |
255 | /* | |
256 | * Verify that it is a regular file or a | |
257 | * symlink and not a special file (e.g. | |
258 | * device). | |
259 | */ | |
260 | if (S_ISREG(stat_output.st_mode) | |
261 | || S_ISLNK(stat_output.st_mode)) { | |
262 | /* | |
263 | * Found a match, set the out parameter | |
264 | * and return success. | |
265 | */ | |
266 | ret = lttng_strncpy(binary_full_path, | |
267 | tentative_binary_path, | |
268 | LTTNG_PATH_MAX); | |
269 | if (ret == -1) { | |
270 | ERR("Source path does not fit " | |
271 | "in destination buffer."); | |
272 | } | |
273 | goto free_binary_path; | |
274 | } | |
275 | } | |
276 | } | |
277 | /* Go to the next entry in the $PATH variable. */ | |
278 | curr_search_dir = curr_search_dir_end + 1; | |
279 | } while (curr_search_dir_end != NULL); | |
280 | ||
281 | free_binary_path: | |
282 | free(tentative_binary_path); | |
283 | alloc_error: | |
284 | free(command_search_path); | |
285 | end: | |
286 | return ret; | |
287 | } | |
288 | ||
36aa2f64 FD |
289 | /* |
290 | * Check if the symbol field passed by the user is in fact an address or an | |
291 | * offset from a symbol. Those two instrumentation types are not supported yet. | |
292 | * It's expected to be a common mistake because of the existing --probe option | |
293 | * that does support these formats. | |
294 | * | |
295 | * Here are examples of these unsupported formats for the --userspace-probe | |
296 | * option: | |
297 | * elf:/path/to/binary:0x400430 | |
298 | * elf:/path/to/binary:4194364 | |
299 | * elf:/path/to/binary:my_symbol+0x323 | |
300 | * elf:/path/to/binary:my_symbol+43 | |
301 | */ | |
302 | static int warn_userspace_probe_syntax(const char *symbol) | |
303 | { | |
36aa2f64 FD |
304 | int ret; |
305 | ||
306 | /* Check if the symbol field is an hex address. */ | |
639d2823 | 307 | ret = sscanf(symbol, "0x%*x"); |
36aa2f64 FD |
308 | if (ret > 0) { |
309 | /* If there is a match, print a warning and return an error. */ | |
310 | ERR("Userspace probe on address not supported yet."); | |
311 | ret = CMD_UNSUPPORTED; | |
312 | goto error; | |
313 | } | |
314 | ||
315 | /* Check if the symbol field is an decimal address. */ | |
639d2823 | 316 | ret = sscanf(symbol, "%*u"); |
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 symbol+hex_offset. */ | |
639d2823 | 325 | ret = sscanf(symbol, "%*[^+]+0x%*x"); |
36aa2f64 FD |
326 | if (ret > 0) { |
327 | /* If there is a match, print a warning and return an error. */ | |
328 | ERR("Userspace probe on symbol+offset not supported yet."); | |
329 | ret = CMD_UNSUPPORTED; | |
330 | goto error; | |
331 | } | |
332 | ||
333 | /* Check if the symbol field is symbol+decimal_offset. */ | |
639d2823 | 334 | ret = sscanf(symbol, "%*[^+]+%*u"); |
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 | ret = 0; | |
343 | ||
344 | error: | |
345 | return ret; | |
346 | } | |
347 | ||
dcabc190 FD |
348 | /* |
349 | * Parse userspace probe options | |
350 | * Set the userspace probe fields in the lttng_event struct and set the | |
351 | * target_path to the path to the binary. | |
352 | */ | |
353 | static int parse_userspace_probe_opts(struct lttng_event *ev, char *opt) | |
354 | { | |
355 | int ret = CMD_SUCCESS; | |
356 | int num_token; | |
357 | char **tokens; | |
358 | char *target_path = NULL; | |
359 | char *unescaped_target_path = NULL; | |
360 | char *real_target_path = NULL; | |
361 | char *symbol_name = NULL, *probe_name = NULL, *provider_name = NULL; | |
362 | struct lttng_userspace_probe_location *probe_location = NULL; | |
363 | struct lttng_userspace_probe_location_lookup_method *lookup_method = | |
364 | NULL; | |
365 | ||
366 | if (opt == NULL) { | |
367 | ret = CMD_ERROR; | |
368 | goto end; | |
369 | } | |
370 | ||
ebbcac93 FD |
371 | switch (ev->type) { |
372 | case LTTNG_EVENT_USERSPACE_PROBE: | |
373 | break; | |
374 | default: | |
375 | assert(0); | |
376 | } | |
377 | ||
dcabc190 FD |
378 | /* |
379 | * userspace probe fields are separated by ':'. | |
380 | */ | |
381 | tokens = strutils_split(opt, ':', 1); | |
382 | num_token = strutils_array_of_strings_len(tokens); | |
383 | ||
384 | /* | |
385 | * Early sanity check that the number of parameter is between 2 and 4 | |
386 | * inclusively. | |
387 | * elf:PATH:SYMBOL | |
388 | * std:PATH:PROVIDER_NAME:PROBE_NAME | |
389 | * PATH:SYMBOL (same behavior as ELF) | |
390 | */ | |
391 | if (num_token < 2 || num_token > 4) { | |
392 | ret = CMD_ERROR; | |
393 | goto end_string; | |
394 | } | |
395 | ||
396 | /* | |
397 | * Looking up the first parameter will tell the technique to use to | |
398 | * interpret the userspace probe/function description. | |
399 | */ | |
400 | switch (num_token) { | |
401 | case 2: | |
402 | /* When the probe type is omitted we assume ELF for now. */ | |
403 | case 3: | |
404 | if (num_token == 3 && strcmp(tokens[0], "elf") == 0) { | |
405 | target_path = tokens[1]; | |
406 | symbol_name = tokens[2]; | |
407 | } else if (num_token == 2) { | |
408 | target_path = tokens[0]; | |
409 | symbol_name = tokens[1]; | |
410 | } else { | |
411 | ret = CMD_ERROR; | |
412 | goto end_string; | |
413 | } | |
414 | lookup_method = | |
415 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
416 | if (!lookup_method) { | |
417 | WARN("Failed to create ELF lookup method"); | |
418 | ret = CMD_ERROR; | |
419 | goto end_string; | |
420 | } | |
421 | break; | |
422 | case 4: | |
423 | if (strcmp(tokens[0], "sdt") == 0) { | |
424 | target_path = tokens[1]; | |
425 | provider_name = tokens[2]; | |
426 | probe_name = tokens[3]; | |
427 | } else { | |
428 | ret = CMD_ERROR; | |
429 | goto end_string; | |
430 | } | |
431 | lookup_method = | |
432 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
433 | if (!lookup_method) { | |
b9e1aca7 | 434 | WARN("Failed to create SDT lookup method"); |
dcabc190 FD |
435 | ret = CMD_ERROR; |
436 | goto end_string; | |
437 | } | |
438 | break; | |
439 | default: | |
440 | ret = CMD_ERROR; | |
441 | goto end_string; | |
442 | } | |
443 | ||
444 | /* strutils_unescape_string allocates a new char *. */ | |
445 | unescaped_target_path = strutils_unescape_string(target_path, 0); | |
446 | if (!unescaped_target_path) { | |
36aa2f64 | 447 | ret = CMD_ERROR; |
ebbcac93 | 448 | goto end_destroy_lookup_method; |
dcabc190 FD |
449 | } |
450 | ||
451 | /* | |
452 | * If there is not forward slash in the path. Walk the $PATH else | |
453 | * expand. | |
454 | */ | |
ebbcac93 | 455 | if (strchr(unescaped_target_path, '/') == NULL) { |
dcabc190 FD |
456 | /* Walk the $PATH variable to find the targeted binary. */ |
457 | real_target_path = zmalloc(LTTNG_PATH_MAX * sizeof(char)); | |
458 | if (!real_target_path) { | |
459 | PERROR("Error allocating path buffer"); | |
460 | ret = CMD_ERROR; | |
ebbcac93 | 461 | goto end_destroy_lookup_method; |
dcabc190 | 462 | } |
ebbcac93 | 463 | ret = walk_command_search_path(unescaped_target_path, real_target_path); |
dcabc190 FD |
464 | if (ret) { |
465 | ERR("Binary not found."); | |
466 | ret = CMD_ERROR; | |
ebbcac93 | 467 | goto end_destroy_lookup_method; |
dcabc190 FD |
468 | } |
469 | } else { | |
470 | /* | |
471 | * Expand references to `/./` and `/../`. This function does not check | |
ebbcac93 FD |
472 | * if the file exists. This call returns an allocated buffer on |
473 | * success. | |
dcabc190 | 474 | */ |
ebbcac93 | 475 | real_target_path = utils_expand_path_keep_symlink(unescaped_target_path); |
dcabc190 FD |
476 | if (!real_target_path) { |
477 | ERR("Error expanding the path to binary."); | |
478 | ret = CMD_ERROR; | |
ebbcac93 | 479 | goto end_destroy_lookup_method; |
dcabc190 FD |
480 | } |
481 | ||
482 | /* | |
54185c70 FD |
483 | * Check if the file exists using access(2), If it does not, |
484 | * return an error. | |
dcabc190 FD |
485 | */ |
486 | ret = access(real_target_path, F_OK); | |
487 | if (ret) { | |
bb77204a | 488 | ERR("Cannot find binary at path: %s.", real_target_path); |
dcabc190 | 489 | ret = CMD_ERROR; |
ebbcac93 | 490 | goto end_destroy_lookup_method; |
dcabc190 FD |
491 | } |
492 | } | |
493 | ||
494 | switch (lttng_userspace_probe_location_lookup_method_get_type(lookup_method)) { | |
495 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
36aa2f64 FD |
496 | /* |
497 | * Check for common mistakes in userspace probe description syntax. | |
498 | */ | |
499 | ret = warn_userspace_probe_syntax(symbol_name); | |
500 | if (ret) { | |
501 | goto end_destroy_lookup_method; | |
502 | } | |
503 | ||
dcabc190 FD |
504 | probe_location = lttng_userspace_probe_location_function_create( |
505 | real_target_path, symbol_name, lookup_method); | |
506 | if (!probe_location) { | |
507 | WARN("Failed to create function probe location"); | |
508 | ret = CMD_ERROR; | |
509 | goto end_destroy_lookup_method; | |
510 | } | |
511 | ||
512 | /* Ownership transferred to probe_location. */ | |
513 | lookup_method = NULL; | |
514 | ||
515 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
516 | if (ret) { | |
517 | WARN("Failed to set probe location on event"); | |
518 | ret = CMD_ERROR; | |
519 | goto end_destroy_location; | |
520 | } | |
521 | break; | |
522 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
523 | probe_location = lttng_userspace_probe_location_tracepoint_create( | |
524 | real_target_path, provider_name, probe_name, lookup_method); | |
525 | if (!probe_location) { | |
526 | WARN("Failed to create function probe location"); | |
527 | ret = CMD_ERROR; | |
528 | goto end_destroy_lookup_method; | |
529 | } | |
530 | ||
531 | /* Ownership transferred to probe_location. */ | |
532 | lookup_method = NULL; | |
533 | ||
534 | ret = lttng_event_set_userspace_probe_location(ev, probe_location); | |
535 | if (ret) { | |
536 | WARN("Failed to set probe location on event"); | |
537 | ret = CMD_ERROR; | |
538 | goto end_destroy_location; | |
539 | } | |
540 | break; | |
541 | default: | |
542 | ret = CMD_ERROR; | |
ebbcac93 | 543 | goto end_destroy_lookup_method; |
dcabc190 FD |
544 | } |
545 | ||
ebbcac93 FD |
546 | /* Successful parsing, now clean up everything and return. */ |
547 | goto end_string; | |
dcabc190 FD |
548 | |
549 | end_destroy_location: | |
550 | lttng_userspace_probe_location_destroy(probe_location); | |
551 | end_destroy_lookup_method: | |
552 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
ebbcac93 FD |
553 | end_string: |
554 | strutils_free_null_terminated_array_of_strings(tokens); | |
dcabc190 | 555 | /* |
ebbcac93 FD |
556 | * Freeing both char * here makes the error handling simplier. free() |
557 | * performs not action if the pointer is NULL. | |
dcabc190 FD |
558 | */ |
559 | free(real_target_path); | |
dcabc190 | 560 | free(unescaped_target_path); |
dcabc190 FD |
561 | end: |
562 | return ret; | |
563 | } | |
564 | ||
5cdb6027 DG |
565 | /* |
566 | * Maps LOG4j loglevel from string to value | |
567 | */ | |
568 | static int loglevel_log4j_str_to_value(const char *inputstr) | |
569 | { | |
570 | int i = 0; | |
571 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
572 | ||
3712b110 JG |
573 | if (!inputstr || strlen(inputstr) == 0) { |
574 | return -1; | |
575 | } | |
576 | ||
5cdb6027 DG |
577 | /* |
578 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
579 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
580 | */ | |
581 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
582 | str[i] = toupper(inputstr[i]); | |
583 | i++; | |
584 | } | |
585 | str[i] = '\0'; | |
586 | ||
587 | if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) { | |
588 | return LTTNG_LOGLEVEL_LOG4J_OFF; | |
589 | } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) { | |
590 | return LTTNG_LOGLEVEL_LOG4J_FATAL; | |
591 | } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) { | |
592 | return LTTNG_LOGLEVEL_LOG4J_ERROR; | |
593 | } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) { | |
594 | return LTTNG_LOGLEVEL_LOG4J_WARN; | |
595 | } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) { | |
596 | return LTTNG_LOGLEVEL_LOG4J_INFO; | |
597 | } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) { | |
598 | return LTTNG_LOGLEVEL_LOG4J_DEBUG; | |
599 | } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) { | |
600 | return LTTNG_LOGLEVEL_LOG4J_TRACE; | |
601 | } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) { | |
602 | return LTTNG_LOGLEVEL_LOG4J_ALL; | |
603 | } else { | |
604 | return -1; | |
605 | } | |
606 | } | |
607 | ||
b2064f54 DG |
608 | /* |
609 | * Maps JUL loglevel from string to value | |
610 | */ | |
611 | static int loglevel_jul_str_to_value(const char *inputstr) | |
612 | { | |
613 | int i = 0; | |
614 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
615 | ||
3712b110 JG |
616 | if (!inputstr || strlen(inputstr) == 0) { |
617 | return -1; | |
618 | } | |
619 | ||
b2064f54 DG |
620 | /* |
621 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
622 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
623 | */ | |
624 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
625 | str[i] = toupper(inputstr[i]); | |
626 | i++; | |
627 | } | |
628 | str[i] = '\0'; | |
629 | ||
630 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { | |
631 | return LTTNG_LOGLEVEL_JUL_OFF; | |
632 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { | |
633 | return LTTNG_LOGLEVEL_JUL_SEVERE; | |
634 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { | |
635 | return LTTNG_LOGLEVEL_JUL_WARNING; | |
636 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { | |
637 | return LTTNG_LOGLEVEL_JUL_INFO; | |
638 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { | |
639 | return LTTNG_LOGLEVEL_JUL_CONFIG; | |
640 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { | |
641 | return LTTNG_LOGLEVEL_JUL_FINE; | |
642 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { | |
643 | return LTTNG_LOGLEVEL_JUL_FINER; | |
644 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { | |
645 | return LTTNG_LOGLEVEL_JUL_FINEST; | |
646 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { | |
647 | return LTTNG_LOGLEVEL_JUL_ALL; | |
648 | } else { | |
649 | return -1; | |
650 | } | |
651 | } | |
652 | ||
0e115563 DG |
653 | /* |
654 | * Maps Python loglevel from string to value | |
655 | */ | |
656 | static int loglevel_python_str_to_value(const char *inputstr) | |
657 | { | |
658 | int i = 0; | |
659 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
660 | ||
3712b110 JG |
661 | if (!inputstr || strlen(inputstr) == 0) { |
662 | return -1; | |
663 | } | |
664 | ||
0e115563 DG |
665 | /* |
666 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
667 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
668 | */ | |
669 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
670 | str[i] = toupper(inputstr[i]); | |
671 | i++; | |
672 | } | |
673 | str[i] = '\0'; | |
674 | ||
675 | if (!strcmp(str, "PYTHON_CRITICAL") || !strcmp(str, "CRITICAL")) { | |
676 | return LTTNG_LOGLEVEL_PYTHON_CRITICAL; | |
677 | } else if (!strcmp(str, "PYTHON_ERROR") || !strcmp(str, "ERROR")) { | |
678 | return LTTNG_LOGLEVEL_PYTHON_ERROR; | |
679 | } else if (!strcmp(str, "PYTHON_WARNING") || !strcmp(str, "WARNING")) { | |
680 | return LTTNG_LOGLEVEL_PYTHON_WARNING; | |
681 | } else if (!strcmp(str, "PYTHON_INFO") || !strcmp(str, "INFO")) { | |
682 | return LTTNG_LOGLEVEL_PYTHON_INFO; | |
683 | } else if (!strcmp(str, "PYTNON_DEBUG") || !strcmp(str, "DEBUG")) { | |
684 | return LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
685 | } else if (!strcmp(str, "PYTHON_NOTSET") || !strcmp(str, "NOTSET")) { | |
686 | return LTTNG_LOGLEVEL_PYTHON_NOTSET; | |
687 | } else { | |
688 | return -1; | |
689 | } | |
690 | } | |
691 | ||
8005f29a | 692 | /* |
0c8477c8 | 693 | * Maps loglevel from string to value |
8005f29a MD |
694 | */ |
695 | static | |
46839cc2 | 696 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 697 | { |
46839cc2 MD |
698 | int i = 0; |
699 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
700 | ||
3712b110 JG |
701 | if (!inputstr || strlen(inputstr) == 0) { |
702 | return -1; | |
703 | } | |
704 | ||
e051e07c DG |
705 | /* |
706 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
707 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
708 | */ | |
709 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
710 | str[i] = toupper(inputstr[i]); |
711 | i++; | |
712 | } | |
713 | str[i] = '\0'; | |
714 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
715 | return LTTNG_LOGLEVEL_EMERG; | |
716 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
717 | return LTTNG_LOGLEVEL_ALERT; | |
718 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
719 | return LTTNG_LOGLEVEL_CRIT; | |
720 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
721 | return LTTNG_LOGLEVEL_ERR; | |
722 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
723 | return LTTNG_LOGLEVEL_WARNING; | |
724 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
725 | return LTTNG_LOGLEVEL_NOTICE; | |
726 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
727 | return LTTNG_LOGLEVEL_INFO; | |
728 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
729 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
730 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
731 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
732 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
733 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
734 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
735 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
736 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
737 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
738 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
739 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
740 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
741 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
742 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
743 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
744 | } else { |
745 | return -1; | |
746 | } | |
747 | } | |
748 | ||
85076754 MD |
749 | static |
750 | const char *print_channel_name(const char *name) | |
751 | { | |
752 | return name ? : DEFAULT_CHANNEL_NAME; | |
753 | } | |
754 | ||
755 | static | |
756 | const char *print_raw_channel_name(const char *name) | |
757 | { | |
758 | return name ? : "<default>"; | |
759 | } | |
760 | ||
89476427 JRJ |
761 | /* |
762 | * Mi print exlcusion list | |
763 | */ | |
764 | static | |
9f449915 | 765 | int mi_print_exclusion(char **names) |
89476427 JRJ |
766 | { |
767 | int i, ret; | |
9f449915 | 768 | int count = names ? strutils_array_of_strings_len(names) : 0; |
89476427 JRJ |
769 | |
770 | assert(writer); | |
771 | ||
772 | if (count == 0) { | |
773 | ret = 0; | |
774 | goto end; | |
775 | } | |
776 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
777 | if (ret) { | |
778 | goto end; | |
779 | } | |
780 | ||
781 | for (i = 0; i < count; i++) { | |
782 | ret = mi_lttng_writer_write_element_string(writer, | |
783 | config_element_exclusion, names[i]); | |
784 | if (ret) { | |
785 | goto end; | |
786 | } | |
787 | } | |
788 | ||
789 | /* Close exclusions element */ | |
790 | ret = mi_lttng_writer_close_element(writer); | |
791 | ||
792 | end: | |
793 | return ret; | |
794 | } | |
795 | ||
9c48cab3 JI |
796 | /* |
797 | * Return allocated string for pretty-printing exclusion names. | |
798 | */ | |
799 | static | |
9f449915 | 800 | char *print_exclusions(char **names) |
9c48cab3 JI |
801 | { |
802 | int length = 0; | |
803 | int i; | |
bfe36393 | 804 | const char preamble[] = " excluding "; |
9c48cab3 | 805 | char *ret; |
9f449915 | 806 | int count = names ? strutils_array_of_strings_len(names) : 0; |
9c48cab3 JI |
807 | |
808 | if (count == 0) { | |
809 | return strdup(""); | |
810 | } | |
811 | ||
812 | /* calculate total required length */ | |
813 | for (i = 0; i < count; i++) { | |
9f449915 | 814 | length += strlen(names[i]) + 4; |
9c48cab3 JI |
815 | } |
816 | ||
bfe36393 JG |
817 | length += sizeof(preamble); |
818 | ret = zmalloc(length); | |
fd591b18 MD |
819 | if (!ret) { |
820 | return NULL; | |
821 | } | |
9c48cab3 JI |
822 | strncpy(ret, preamble, length); |
823 | for (i = 0; i < count; i++) { | |
9f449915 | 824 | strcat(ret, "\""); |
9c48cab3 | 825 | strcat(ret, names[i]); |
9f449915 | 826 | strcat(ret, "\""); |
9c48cab3 | 827 | if (i != count - 1) { |
9f449915 | 828 | strcat(ret, ", "); |
9c48cab3 JI |
829 | } |
830 | } | |
89476427 | 831 | |
9c48cab3 JI |
832 | return ret; |
833 | } | |
834 | ||
748bde76 | 835 | static |
9f449915 | 836 | int check_exclusion_subsets(const char *event_name, const char *exclusion) |
748bde76 | 837 | { |
9f449915 PP |
838 | bool warn = false; |
839 | int ret = 0; | |
840 | const char *e = event_name; | |
841 | const char *x = exclusion; | |
842 | ||
843 | /* Scan both the excluder and the event letter by letter */ | |
844 | while (true) { | |
845 | if (*e == '\\') { | |
846 | if (*x != *e) { | |
847 | warn = true; | |
848 | goto end; | |
849 | } | |
748bde76 | 850 | |
9f449915 PP |
851 | e++; |
852 | x++; | |
853 | goto cmp_chars; | |
854 | } | |
855 | ||
856 | if (*x == '*') { | |
857 | /* Event is a subset of the excluder */ | |
858 | ERR("Event %s: %s excludes all events from %s", | |
859 | event_name, exclusion, event_name); | |
860 | goto error; | |
861 | } | |
862 | ||
863 | if (*e == '*') { | |
864 | /* | |
865 | * Reached the end of the event name before the | |
866 | * end of the exclusion: this is valid. | |
867 | */ | |
868 | goto end; | |
869 | } | |
870 | ||
871 | cmp_chars: | |
872 | if (*x != *e) { | |
873 | warn = true; | |
874 | break; | |
875 | } | |
876 | ||
877 | x++; | |
878 | e++; | |
748bde76 JI |
879 | } |
880 | ||
9f449915 | 881 | goto end; |
748bde76 | 882 | |
9f449915 PP |
883 | error: |
884 | ret = -1; | |
748bde76 | 885 | |
9f449915 PP |
886 | end: |
887 | if (warn) { | |
888 | WARN("Event %s: %s does not exclude any events from %s", | |
889 | event_name, exclusion, event_name); | |
890 | } | |
748bde76 | 891 | |
9f449915 PP |
892 | return ret; |
893 | } | |
894 | ||
9f449915 PP |
895 | static |
896 | int create_exclusion_list_and_validate(const char *event_name, | |
897 | const char *exclusions_arg, | |
898 | char ***exclusion_list) | |
899 | { | |
900 | int ret = 0; | |
901 | char **exclusions = NULL; | |
902 | ||
903 | /* Event name must be a valid globbing pattern to allow exclusions. */ | |
904 | if (!strutils_is_star_glob_pattern(event_name)) { | |
905 | ERR("Event %s: Exclusions can only be used with a globbing pattern", | |
906 | event_name); | |
907 | goto error; | |
908 | } | |
909 | ||
910 | /* Split exclusions. */ | |
911 | exclusions = strutils_split(exclusions_arg, ',', true); | |
912 | if (!exclusions) { | |
913 | goto error; | |
914 | } | |
915 | ||
916 | /* | |
917 | * If the event name is a star-at-end only globbing pattern, | |
918 | * then we can validate the individual exclusions. Otherwise | |
919 | * all exclusions are passed to the session daemon. | |
920 | */ | |
921 | if (strutils_is_star_at_the_end_only_glob_pattern(event_name)) { | |
922 | char * const *exclusion; | |
923 | ||
924 | for (exclusion = exclusions; *exclusion; exclusion++) { | |
925 | if (!strutils_is_star_glob_pattern(*exclusion) || | |
926 | strutils_is_star_at_the_end_only_glob_pattern(*exclusion)) { | |
8aa579d4 | 927 | ret = check_exclusion_subsets(event_name, *exclusion); |
9f449915 | 928 | if (ret) { |
5ef79758 MD |
929 | goto error; |
930 | } | |
748bde76 | 931 | } |
748bde76 JI |
932 | } |
933 | } | |
9f449915 PP |
934 | |
935 | *exclusion_list = exclusions; | |
936 | ||
748bde76 | 937 | goto end; |
9f449915 | 938 | |
748bde76 | 939 | error: |
9f449915 PP |
940 | ret = -1; |
941 | strutils_free_null_terminated_array_of_strings(exclusions); | |
942 | ||
748bde76 | 943 | end: |
748bde76 JI |
944 | return ret; |
945 | } | |
502bbe89 | 946 | |
9f449915 PP |
947 | static void warn_on_truncated_exclusion_names(char * const *exclusion_list, |
948 | int *warn) | |
502bbe89 | 949 | { |
9f449915 | 950 | char * const *exclusion; |
502bbe89 | 951 | |
9f449915 PP |
952 | for (exclusion = exclusion_list; *exclusion; exclusion++) { |
953 | if (strlen(*exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
502bbe89 | 954 | WARN("Event exclusion \"%s\" will be truncated", |
9f449915 | 955 | *exclusion); |
502bbe89 PP |
956 | *warn = 1; |
957 | } | |
958 | } | |
959 | } | |
960 | ||
f3ed775e | 961 | /* |
6181537c | 962 | * Enabling event using the lttng API. |
89476427 | 963 | * Note: in case of error only the last error code will be return. |
f3ed775e | 964 | */ |
cd80958d | 965 | static int enable_events(char *session_name) |
f3ed775e | 966 | { |
89476427 JRJ |
967 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
968 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 969 | char *event_name, *channel_name = NULL; |
91744e14 | 970 | struct lttng_event *ev; |
7d29a247 | 971 | struct lttng_domain dom; |
7ed70bc9 | 972 | char **exclusion_list = NULL; |
f3ed775e | 973 | |
441c16a7 MD |
974 | memset(&dom, 0, sizeof(dom)); |
975 | ||
91744e14 FD |
976 | ev = lttng_event_create(); |
977 | if (!ev) { | |
978 | ret = CMD_ERROR; | |
979 | goto error; | |
980 | } | |
981 | ||
53a80697 | 982 | if (opt_kernel) { |
67b58630 JG |
983 | if (opt_loglevel) { |
984 | WARN("Kernel loglevels are not supported."); | |
985 | } | |
53a80697 MD |
986 | } |
987 | ||
7d29a247 DG |
988 | /* Create lttng domain */ |
989 | if (opt_kernel) { | |
990 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 991 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 992 | } else if (opt_userspace) { |
2bdd86d4 | 993 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 994 | /* Default. */ |
8692d4e5 | 995 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
996 | } else if (opt_jul) { |
997 | dom.type = LTTNG_DOMAIN_JUL; | |
998 | /* Default. */ | |
999 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
1000 | } else if (opt_log4j) { |
1001 | dom.type = LTTNG_DOMAIN_LOG4J; | |
1002 | /* Default. */ | |
1003 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
0e115563 DG |
1004 | } else if (opt_python) { |
1005 | dom.type = LTTNG_DOMAIN_PYTHON; | |
1006 | /* Default. */ | |
1007 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 1008 | } else { |
3ecec76a PP |
1009 | /* Checked by the caller. */ |
1010 | assert(0); | |
2bdd86d4 | 1011 | } |
7d29a247 | 1012 | |
8b08c525 AB |
1013 | if (opt_exclude) { |
1014 | switch (dom.type) { | |
1015 | case LTTNG_DOMAIN_KERNEL: | |
1016 | case LTTNG_DOMAIN_JUL: | |
1017 | case LTTNG_DOMAIN_LOG4J: | |
1018 | case LTTNG_DOMAIN_PYTHON: | |
1019 | ERR("Event name exclusions are not yet implemented for %s events", | |
1020 | get_domain_str(dom.type)); | |
1021 | ret = CMD_ERROR; | |
1022 | goto error; | |
1023 | case LTTNG_DOMAIN_UST: | |
1024 | /* Exclusions supported */ | |
1025 | break; | |
1026 | default: | |
1027 | assert(0); | |
1028 | } | |
d5dd17fd JI |
1029 | } |
1030 | ||
4fd2697f FD |
1031 | /* |
1032 | * Adding a filter to a probe, function or userspace-probe would be | |
1033 | * denied by the kernel tracer as it's not supported at the moment. We | |
1034 | * do an early check here to warn the user. | |
1035 | */ | |
1036 | if (opt_filter && opt_kernel) { | |
1037 | switch (opt_event_type) { | |
1038 | case LTTNG_EVENT_ALL: | |
1039 | case LTTNG_EVENT_TRACEPOINT: | |
1040 | case LTTNG_EVENT_SYSCALL: | |
1041 | break; | |
1042 | case LTTNG_EVENT_PROBE: | |
1043 | case LTTNG_EVENT_USERSPACE_PROBE: | |
1044 | case LTTNG_EVENT_FUNCTION: | |
1045 | ERR("Filter expressions are not supported for %s events", | |
1046 | get_event_type_str(opt_event_type)); | |
1047 | ret = CMD_ERROR; | |
1048 | goto error; | |
1049 | default: | |
1050 | ret = CMD_UNDEFINED; | |
1051 | goto error; | |
1052 | } | |
1053 | } | |
1054 | ||
85076754 | 1055 | channel_name = opt_channel_name; |
ae856491 | 1056 | |
cd80958d DG |
1057 | handle = lttng_create_handle(session_name, &dom); |
1058 | if (handle == NULL) { | |
1059 | ret = -1; | |
1060 | goto error; | |
1061 | } | |
1aef21b6 | 1062 | |
89476427 JRJ |
1063 | /* Prepare Mi */ |
1064 | if (lttng_opt_mi) { | |
1065 | /* Open a events element */ | |
1066 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
1067 | if (ret) { | |
1068 | ret = CMD_ERROR; | |
1069 | goto error; | |
1070 | } | |
1071 | } | |
1072 | ||
cd80958d | 1073 | if (opt_enable_all) { |
8c9ae521 | 1074 | /* Default setup for enable all */ |
75e8c5ab | 1075 | if (opt_kernel) { |
91744e14 FD |
1076 | ev->type = opt_event_type; |
1077 | strcpy(ev->name, "*"); | |
300b8fd5 | 1078 | /* kernel loglevels not implemented */ |
91744e14 | 1079 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
75e8c5ab | 1080 | } else { |
91744e14 FD |
1081 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1082 | strcpy(ev->name, "*"); | |
1083 | ev->loglevel_type = opt_loglevel_type; | |
300b8fd5 | 1084 | if (opt_loglevel) { |
0e115563 | 1085 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1086 | if (opt_userspace) { |
91744e14 | 1087 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
b2064f54 | 1088 | } else if (opt_jul) { |
91744e14 | 1089 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1090 | } else if (opt_log4j) { |
91744e14 | 1091 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1092 | } else if (opt_python) { |
91744e14 | 1093 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
b2064f54 | 1094 | } |
91744e14 | 1095 | if (ev->loglevel == -1) { |
300b8fd5 | 1096 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1097 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
1098 | goto error; |
1099 | } | |
22e25b71 | 1100 | } else { |
0e115563 | 1101 | assert(opt_userspace || opt_jul || opt_log4j || opt_python); |
b2064f54 | 1102 | if (opt_userspace) { |
91744e14 | 1103 | ev->loglevel = -1; |
34aa3685 | 1104 | } else if (opt_jul) { |
91744e14 | 1105 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
34aa3685 | 1106 | } else if (opt_log4j) { |
91744e14 | 1107 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1108 | } else if (opt_python) { |
91744e14 | 1109 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
b2064f54 | 1110 | } |
300b8fd5 | 1111 | } |
75e8c5ab | 1112 | } |
8c9ae521 | 1113 | |
7ed70bc9 | 1114 | if (opt_exclude) { |
9f449915 PP |
1115 | ret = create_exclusion_list_and_validate("*", |
1116 | opt_exclude, &exclusion_list); | |
1117 | if (ret) { | |
1118 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1119 | goto error; |
1120 | } | |
502bbe89 | 1121 | |
91744e14 | 1122 | ev->exclusion = 1; |
502bbe89 | 1123 | warn_on_truncated_exclusion_names(exclusion_list, |
9f449915 | 1124 | &warn); |
7ed70bc9 | 1125 | } |
025faf73 | 1126 | if (!opt_filter) { |
7ed70bc9 | 1127 | ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1128 | ev, channel_name, |
7ed70bc9 | 1129 | NULL, |
9f449915 PP |
1130 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, |
1131 | exclusion_list); | |
025faf73 DG |
1132 | if (ret < 0) { |
1133 | switch (-ret) { | |
1134 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
1135 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 1136 | print_channel_name(channel_name), session_name); |
89476427 | 1137 | warn = 1; |
025faf73 | 1138 | break; |
45d5d421 CB |
1139 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1140 | { | |
1141 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1142 | ERR("Events: %s (channel %s, session %s)", | |
1143 | msg, | |
1144 | print_channel_name(channel_name), | |
1145 | session_name); | |
1146 | error = 1; | |
1147 | break; | |
1148 | } | |
025faf73 DG |
1149 | default: |
1150 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
1151 | lttng_strerror(ret), |
1152 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
1153 | ? print_raw_channel_name(channel_name) | |
1154 | : print_channel_name(channel_name), | |
1155 | session_name); | |
89476427 | 1156 | error = 1; |
025faf73 DG |
1157 | break; |
1158 | } | |
1159 | goto end; | |
42224349 | 1160 | } |
8c9ae521 | 1161 | |
025faf73 DG |
1162 | switch (opt_event_type) { |
1163 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 1164 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1165 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1166 | |
1167 | if (!exclusion_string) { | |
1168 | PERROR("Cannot allocate exclusion_string"); | |
1169 | error = 1; | |
1170 | goto end; | |
1171 | } | |
9c48cab3 | 1172 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1173 | get_domain_str(dom.type), |
9c48cab3 | 1174 | exclusion_string, |
85076754 | 1175 | print_channel_name(channel_name), |
025faf73 | 1176 | opt_loglevel); |
9c48cab3 | 1177 | free(exclusion_string); |
025faf73 | 1178 | } else { |
9f449915 | 1179 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1180 | |
1181 | if (!exclusion_string) { | |
1182 | PERROR("Cannot allocate exclusion_string"); | |
1183 | error = 1; | |
1184 | goto end; | |
1185 | } | |
9c48cab3 | 1186 | MSG("All %s tracepoints%s are enabled in channel %s", |
b9dfb167 | 1187 | get_domain_str(dom.type), |
9c48cab3 | 1188 | exclusion_string, |
85076754 | 1189 | print_channel_name(channel_name)); |
9c48cab3 | 1190 | free(exclusion_string); |
025faf73 DG |
1191 | } |
1192 | break; | |
1193 | case LTTNG_EVENT_SYSCALL: | |
1194 | if (opt_kernel) { | |
6e911cad MD |
1195 | MSG("All %s system calls are enabled in channel %s", |
1196 | get_domain_str(dom.type), | |
85076754 | 1197 | print_channel_name(channel_name)); |
025faf73 DG |
1198 | } |
1199 | break; | |
1200 | case LTTNG_EVENT_ALL: | |
67b58630 | 1201 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9f449915 | 1202 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1203 | |
1204 | if (!exclusion_string) { | |
1205 | PERROR("Cannot allocate exclusion_string"); | |
1206 | error = 1; | |
1207 | goto end; | |
1208 | } | |
9c48cab3 | 1209 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
b9dfb167 | 1210 | get_domain_str(dom.type), |
9c48cab3 | 1211 | exclusion_string, |
85076754 | 1212 | print_channel_name(channel_name), |
025faf73 | 1213 | opt_loglevel); |
9c48cab3 | 1214 | free(exclusion_string); |
025faf73 | 1215 | } else { |
9f449915 | 1216 | char *exclusion_string = print_exclusions(exclusion_list); |
5ef79758 MD |
1217 | |
1218 | if (!exclusion_string) { | |
1219 | PERROR("Cannot allocate exclusion_string"); | |
1220 | error = 1; | |
1221 | goto end; | |
1222 | } | |
9c48cab3 | 1223 | MSG("All %s events%s are enabled in channel %s", |
b9dfb167 | 1224 | get_domain_str(dom.type), |
9c48cab3 | 1225 | exclusion_string, |
85076754 | 1226 | print_channel_name(channel_name)); |
9c48cab3 | 1227 | free(exclusion_string); |
025faf73 DG |
1228 | } |
1229 | break; | |
1230 | default: | |
1231 | /* | |
1232 | * We should not be here since lttng_enable_event should have | |
1233 | * failed on the event type. | |
1234 | */ | |
1235 | goto error; | |
57064ada | 1236 | } |
f3ed775e | 1237 | } |
89476427 | 1238 | |
025faf73 | 1239 | if (opt_filter) { |
91744e14 | 1240 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1241 | opt_filter, |
1242 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1243 | exclusion_list); | |
89476427 JRJ |
1244 | if (command_ret < 0) { |
1245 | switch (-command_ret) { | |
16363652 | 1246 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 1247 | WARN("Filter on all events is already enabled" |
16363652 | 1248 | " (channel %s, session %s)", |
85076754 | 1249 | print_channel_name(channel_name), session_name); |
89476427 | 1250 | warn = 1; |
16363652 | 1251 | break; |
45d5d421 CB |
1252 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1253 | { | |
1254 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1255 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
1256 | msg, | |
1257 | print_channel_name(channel_name), | |
1258 | session_name, opt_filter); | |
1259 | error = 1; | |
1260 | break; | |
1261 | } | |
16363652 | 1262 | default: |
85076754 | 1263 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
1264 | lttng_strerror(command_ret), |
1265 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1266 | ? print_raw_channel_name(channel_name) |
1267 | : print_channel_name(channel_name), | |
1268 | session_name, opt_filter); | |
89476427 | 1269 | error = 1; |
16363652 DG |
1270 | break; |
1271 | } | |
89476427 | 1272 | error_holder = command_ret; |
16363652 | 1273 | } else { |
91744e14 | 1274 | ev->filter = 1; |
16363652 DG |
1275 | MSG("Filter '%s' successfully set", opt_filter); |
1276 | } | |
1277 | } | |
89476427 JRJ |
1278 | |
1279 | if (lttng_opt_mi) { | |
1280 | /* The wildcard * is used for kernel and ust domain to | |
1281 | * represent ALL. We copy * in event name to force the wildcard use | |
1282 | * for kernel domain | |
1283 | * | |
1284 | * Note: this is strictly for semantic and printing while in | |
1285 | * machine interface mode. | |
1286 | */ | |
91744e14 | 1287 | strcpy(ev->name, "*"); |
89476427 JRJ |
1288 | |
1289 | /* If we reach here the events are enabled */ | |
1290 | if (!error && !warn) { | |
91744e14 | 1291 | ev->enabled = 1; |
89476427 | 1292 | } else { |
91744e14 | 1293 | ev->enabled = 0; |
89476427 JRJ |
1294 | success = 0; |
1295 | } | |
91744e14 | 1296 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1297 | if (ret) { |
1298 | ret = CMD_ERROR; | |
1299 | goto error; | |
1300 | } | |
1301 | ||
1302 | /* print exclusion */ | |
9f449915 | 1303 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1304 | if (ret) { |
1305 | ret = CMD_ERROR; | |
1306 | goto error; | |
1307 | } | |
1308 | ||
1309 | /* Success ? */ | |
1310 | ret = mi_lttng_writer_write_element_bool(writer, | |
1311 | mi_lttng_element_command_success, success); | |
1312 | if (ret) { | |
1313 | ret = CMD_ERROR; | |
1314 | goto error; | |
1315 | } | |
1316 | ||
1317 | /* Close event element */ | |
1318 | ret = mi_lttng_writer_close_element(writer); | |
1319 | if (ret) { | |
1320 | ret = CMD_ERROR; | |
1321 | goto error; | |
1322 | } | |
1323 | } | |
1324 | ||
8c9ae521 | 1325 | goto end; |
f3ed775e DG |
1326 | } |
1327 | ||
1328 | /* Strip event list */ | |
1329 | event_name = strtok(opt_event_list, ","); | |
1330 | while (event_name != NULL) { | |
6181537c | 1331 | /* Copy name and type of the event */ |
91744e14 FD |
1332 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); |
1333 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
1334 | ev->type = opt_event_type; | |
6181537c | 1335 | |
f3ed775e DG |
1336 | /* Kernel tracer action */ |
1337 | if (opt_kernel) { | |
1338 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
1339 | event_name, |
1340 | print_channel_name(channel_name)); | |
f3ed775e DG |
1341 | |
1342 | switch (opt_event_type) { | |
29c62722 MD |
1343 | case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */ |
1344 | /* If event name differs from *, select tracepoint. */ | |
91744e14 FD |
1345 | if (strcmp(ev->name, "*")) { |
1346 | ev->type = LTTNG_EVENT_TRACEPOINT; | |
29c62722 MD |
1347 | } |
1348 | break; | |
e6ddca71 | 1349 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 1350 | break; |
7d29a247 | 1351 | case LTTNG_EVENT_PROBE: |
91744e14 | 1352 | ret = parse_probe_opts(ev, opt_probe); |
49d4e302 | 1353 | if (ret) { |
cf0e5467 | 1354 | ERR("Unable to parse probe options"); |
91744e14 | 1355 | ret = CMD_ERROR; |
0d63dd19 DG |
1356 | goto error; |
1357 | } | |
f3ed775e | 1358 | break; |
dcabc190 FD |
1359 | case LTTNG_EVENT_USERSPACE_PROBE: |
1360 | ret = parse_userspace_probe_opts(ev, opt_userspace_probe); | |
1361 | if (ret) { | |
36aa2f64 FD |
1362 | switch (ret) { |
1363 | case CMD_UNSUPPORTED: | |
1364 | /* | |
1365 | * Error message describing | |
1366 | * what is not supported was | |
1367 | * printed in the function. | |
1368 | */ | |
1369 | break; | |
1370 | case CMD_ERROR: | |
1371 | default: | |
1372 | ERR("Unable to parse userspace probe options"); | |
1373 | break; | |
1374 | } | |
dcabc190 FD |
1375 | goto error; |
1376 | } | |
1377 | break; | |
f3ed775e | 1378 | case LTTNG_EVENT_FUNCTION: |
91744e14 | 1379 | ret = parse_probe_opts(ev, opt_function); |
49d4e302 | 1380 | if (ret) { |
8f0d098b | 1381 | ERR("Unable to parse function probe options"); |
91744e14 | 1382 | ret = CMD_ERROR; |
8f0d098b MD |
1383 | goto error; |
1384 | } | |
1385 | break; | |
a54bd42d | 1386 | case LTTNG_EVENT_SYSCALL: |
91744e14 | 1387 | ev->type = LTTNG_EVENT_SYSCALL; |
c6aa2d41 | 1388 | break; |
f3ed775e | 1389 | default: |
1ab1ea0b | 1390 | ret = CMD_UNDEFINED; |
f3ed775e DG |
1391 | goto error; |
1392 | } | |
0cda4f28 | 1393 | |
0cda4f28 | 1394 | /* kernel loglevels not implemented */ |
91744e14 | 1395 | ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 1396 | } else if (opt_userspace) { /* User-space tracer action */ |
300b8fd5 | 1397 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 1398 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
1399 | |
1400 | switch (opt_event_type) { | |
1401 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
1402 | /* Fall-through */ |
1403 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 1404 | /* Copy name and type of the event */ |
91744e14 FD |
1405 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1406 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1407 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
1408 | break; |
1409 | case LTTNG_EVENT_PROBE: | |
1410 | case LTTNG_EVENT_FUNCTION: | |
2bdd86d4 | 1411 | case LTTNG_EVENT_SYSCALL: |
dcabc190 | 1412 | case LTTNG_EVENT_USERSPACE_PROBE: |
2bdd86d4 | 1413 | default: |
cc62c0c0 | 1414 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 1415 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
1416 | goto error; |
1417 | } | |
0cda4f28 | 1418 | |
7ed70bc9 | 1419 | if (opt_exclude) { |
91744e14 | 1420 | ev->exclusion = 1; |
d5dd17fd JI |
1421 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
1422 | ERR("Exclusion option can only be used with tracepoint events"); | |
1423 | ret = CMD_ERROR; | |
1424 | goto error; | |
1425 | } | |
7ed70bc9 | 1426 | /* Free previously allocated items */ |
9f449915 PP |
1427 | strutils_free_null_terminated_array_of_strings( |
1428 | exclusion_list); | |
1429 | exclusion_list = NULL; | |
1430 | ret = create_exclusion_list_and_validate( | |
1431 | event_name, opt_exclude, | |
1432 | &exclusion_list); | |
1433 | if (ret) { | |
1434 | ret = CMD_ERROR; | |
7ed70bc9 JI |
1435 | goto error; |
1436 | } | |
502bbe89 PP |
1437 | |
1438 | warn_on_truncated_exclusion_names( | |
9f449915 | 1439 | exclusion_list, &warn); |
7ed70bc9 JI |
1440 | } |
1441 | ||
91744e14 | 1442 | ev->loglevel_type = opt_loglevel_type; |
ed7f4083 | 1443 | if (opt_loglevel) { |
91744e14 FD |
1444 | ev->loglevel = loglevel_str_to_value(opt_loglevel); |
1445 | if (ev->loglevel == -1) { | |
8005f29a | 1446 | ERR("Unknown loglevel %s", opt_loglevel); |
2f70b271 | 1447 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
1448 | goto error; |
1449 | } | |
22e25b71 | 1450 | } else { |
91744e14 | 1451 | ev->loglevel = -1; |
ed7f4083 | 1452 | } |
0e115563 | 1453 | } else if (opt_jul || opt_log4j || opt_python) { |
b9dfb167 DG |
1454 | if (opt_event_type != LTTNG_EVENT_ALL && |
1455 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 1456 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
1457 | ret = CMD_UNSUPPORTED; |
1458 | goto error; | |
1459 | } | |
b2064f54 | 1460 | |
91744e14 | 1461 | ev->loglevel_type = opt_loglevel_type; |
b2064f54 | 1462 | if (opt_loglevel) { |
5cdb6027 | 1463 | if (opt_jul) { |
91744e14 | 1464 | ev->loglevel = loglevel_jul_str_to_value(opt_loglevel); |
5cdb6027 | 1465 | } else if (opt_log4j) { |
91744e14 | 1466 | ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel); |
0e115563 | 1467 | } else if (opt_python) { |
91744e14 | 1468 | ev->loglevel = loglevel_python_str_to_value(opt_loglevel); |
5cdb6027 | 1469 | } |
91744e14 | 1470 | if (ev->loglevel == -1) { |
b2064f54 DG |
1471 | ERR("Unknown loglevel %s", opt_loglevel); |
1472 | ret = -LTTNG_ERR_INVALID; | |
1473 | goto error; | |
1474 | } | |
1475 | } else { | |
5cdb6027 | 1476 | if (opt_jul) { |
91744e14 | 1477 | ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
5cdb6027 | 1478 | } else if (opt_log4j) { |
91744e14 | 1479 | ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
0e115563 | 1480 | } else if (opt_python) { |
91744e14 | 1481 | ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
5cdb6027 | 1482 | } |
b2064f54 | 1483 | } |
91744e14 FD |
1484 | ev->type = LTTNG_EVENT_TRACEPOINT; |
1485 | strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1486 | ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1487 | } else { |
3ecec76a | 1488 | assert(0); |
f3ed775e DG |
1489 | } |
1490 | ||
025faf73 | 1491 | if (!opt_filter) { |
9c48cab3 JI |
1492 | char *exclusion_string; |
1493 | ||
89476427 | 1494 | command_ret = lttng_enable_event_with_exclusions(handle, |
91744e14 | 1495 | ev, channel_name, |
9f449915 PP |
1496 | NULL, |
1497 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1498 | exclusion_list); | |
1499 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1500 | if (!exclusion_string) { |
1501 | PERROR("Cannot allocate exclusion_string"); | |
1502 | error = 1; | |
1503 | goto end; | |
1504 | } | |
89476427 | 1505 | if (command_ret < 0) { |
025faf73 | 1506 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1507 | switch (-command_ret) { |
025faf73 | 1508 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1509 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1510 | event_name, |
9c48cab3 | 1511 | exclusion_string, |
85076754 | 1512 | print_channel_name(channel_name), session_name); |
89476427 | 1513 | warn = 1; |
025faf73 | 1514 | break; |
45d5d421 CB |
1515 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1516 | { | |
1517 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1518 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1519 | exclusion_string, | |
1520 | msg, | |
1521 | print_channel_name(channel_name), | |
1522 | session_name); | |
1523 | error = 1; | |
1524 | break; | |
1525 | } | |
dcabc190 FD |
1526 | case LTTNG_ERR_SDT_PROBE_SEMAPHORE: |
1527 | ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)", | |
1528 | event_name, print_channel_name(channel_name), | |
1529 | session_name); | |
1530 | error = 1; | |
1531 | break; | |
025faf73 | 1532 | default: |
9c48cab3 JI |
1533 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1534 | exclusion_string, | |
da3d7d0e JRJ |
1535 | lttng_strerror(command_ret), |
1536 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1537 | ? print_raw_channel_name(channel_name) |
1538 | : print_channel_name(channel_name), | |
1539 | session_name); | |
89476427 | 1540 | error = 1; |
025faf73 DG |
1541 | break; |
1542 | } | |
89476427 | 1543 | error_holder = command_ret; |
025faf73 | 1544 | } else { |
8274eeba AB |
1545 | switch (dom.type) { |
1546 | case LTTNG_DOMAIN_KERNEL: | |
1547 | case LTTNG_DOMAIN_UST: | |
49ceaa70 | 1548 | MSG("%s event %s%s created in channel %s", |
8274eeba AB |
1549 | get_domain_str(dom.type), |
1550 | event_name, | |
1551 | exclusion_string, | |
1552 | print_channel_name(channel_name)); | |
1553 | break; | |
1554 | case LTTNG_DOMAIN_JUL: | |
1555 | case LTTNG_DOMAIN_LOG4J: | |
1556 | case LTTNG_DOMAIN_PYTHON: | |
1557 | /* | |
1558 | * Don't print the default channel | |
1559 | * name for agent domains. | |
1560 | */ | |
895707da | 1561 | MSG("%s event %s%s enabled", |
8274eeba AB |
1562 | get_domain_str(dom.type), |
1563 | event_name, | |
1564 | exclusion_string); | |
1565 | break; | |
1566 | default: | |
1567 | assert(0); | |
49ceaa70 | 1568 | } |
42224349 | 1569 | } |
9c48cab3 | 1570 | free(exclusion_string); |
6181537c | 1571 | } |
025faf73 DG |
1572 | |
1573 | if (opt_filter) { | |
9c48cab3 JI |
1574 | char *exclusion_string; |
1575 | ||
89476427 | 1576 | /* Filter present */ |
91744e14 | 1577 | ev->filter = 1; |
89476427 | 1578 | |
91744e14 | 1579 | command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name, |
9f449915 PP |
1580 | opt_filter, |
1581 | exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0, | |
1582 | exclusion_list); | |
1583 | exclusion_string = print_exclusions(exclusion_list); | |
5ef79758 MD |
1584 | if (!exclusion_string) { |
1585 | PERROR("Cannot allocate exclusion_string"); | |
1586 | error = 1; | |
1587 | goto end; | |
1588 | } | |
89476427 JRJ |
1589 | if (command_ret < 0) { |
1590 | switch (-command_ret) { | |
7671f53c | 1591 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1592 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1593 | " (channel %s, session %s)", |
85076754 | 1594 | event_name, |
9c48cab3 | 1595 | exclusion_string, |
85076754 | 1596 | print_channel_name(channel_name), session_name); |
89476427 | 1597 | warn = 1; |
7671f53c | 1598 | break; |
45d5d421 CB |
1599 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1600 | { | |
1601 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
91744e14 | 1602 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
45d5d421 CB |
1603 | exclusion_string, |
1604 | msg, | |
1605 | print_channel_name(channel_name), | |
1606 | session_name, opt_filter); | |
1607 | error = 1; | |
1608 | break; | |
1609 | } | |
7671f53c | 1610 | default: |
91744e14 | 1611 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name, |
9c48cab3 | 1612 | exclusion_string, |
da3d7d0e JRJ |
1613 | lttng_strerror(command_ret), |
1614 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1615 | ? print_raw_channel_name(channel_name) |
1616 | : print_channel_name(channel_name), | |
1617 | session_name, opt_filter); | |
89476427 | 1618 | error = 1; |
7671f53c CB |
1619 | break; |
1620 | } | |
89476427 JRJ |
1621 | error_holder = command_ret; |
1622 | ||
16363652 | 1623 | } else { |
9c48cab3 JI |
1624 | MSG("Event %s%s: Filter '%s' successfully set", |
1625 | event_name, exclusion_string, | |
1626 | opt_filter); | |
53a80697 | 1627 | } |
9c48cab3 | 1628 | free(exclusion_string); |
53a80697 | 1629 | } |
6181537c | 1630 | |
89476427 JRJ |
1631 | if (lttng_opt_mi) { |
1632 | if (command_ret) { | |
1633 | success = 0; | |
91744e14 | 1634 | ev->enabled = 0; |
89476427 | 1635 | } else { |
91744e14 | 1636 | ev->enabled = 1; |
89476427 JRJ |
1637 | } |
1638 | ||
91744e14 | 1639 | ret = mi_lttng_event(writer, ev, 1, handle->domain.type); |
89476427 JRJ |
1640 | if (ret) { |
1641 | ret = CMD_ERROR; | |
1642 | goto error; | |
1643 | } | |
1644 | ||
1645 | /* print exclusion */ | |
9f449915 | 1646 | ret = mi_print_exclusion(exclusion_list); |
89476427 JRJ |
1647 | if (ret) { |
1648 | ret = CMD_ERROR; | |
1649 | goto error; | |
1650 | } | |
1651 | ||
1652 | /* Success ? */ | |
1653 | ret = mi_lttng_writer_write_element_bool(writer, | |
1654 | mi_lttng_element_command_success, success); | |
1655 | if (ret) { | |
1656 | ret = CMD_ERROR; | |
1657 | goto end; | |
1658 | } | |
1659 | ||
1660 | /* Close event element */ | |
1661 | ret = mi_lttng_writer_close_element(writer); | |
1662 | if (ret) { | |
1663 | ret = CMD_ERROR; | |
1664 | goto end; | |
1665 | } | |
1666 | } | |
1667 | ||
f3ed775e DG |
1668 | /* Next event */ |
1669 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1670 | /* Reset warn, error and success */ |
1671 | success = 1; | |
f3ed775e DG |
1672 | } |
1673 | ||
8c9ae521 | 1674 | end: |
89476427 JRJ |
1675 | /* Close Mi */ |
1676 | if (lttng_opt_mi) { | |
1677 | /* Close events element */ | |
1678 | ret = mi_lttng_writer_close_element(writer); | |
1679 | if (ret) { | |
1680 | ret = CMD_ERROR; | |
1681 | goto error; | |
1682 | } | |
1683 | } | |
f3ed775e | 1684 | error: |
ae856491 DG |
1685 | if (warn) { |
1686 | ret = CMD_WARNING; | |
1687 | } | |
89476427 JRJ |
1688 | if (error) { |
1689 | ret = CMD_ERROR; | |
1690 | } | |
cd80958d | 1691 | lttng_destroy_handle(handle); |
9f449915 | 1692 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
7ed70bc9 | 1693 | |
89476427 JRJ |
1694 | /* Overwrite ret with error_holder if there was an actual error with |
1695 | * enabling an event. | |
1696 | */ | |
1697 | ret = error_holder ? error_holder : ret; | |
1698 | ||
91744e14 | 1699 | lttng_event_destroy(ev); |
f3ed775e DG |
1700 | return ret; |
1701 | } | |
1702 | ||
1703 | /* | |
6181537c | 1704 | * Add event to trace session |
f3ed775e DG |
1705 | */ |
1706 | int cmd_enable_events(int argc, const char **argv) | |
1707 | { | |
89476427 | 1708 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1709 | static poptContext pc; |
cd80958d | 1710 | char *session_name = NULL; |
68c7f6e5 | 1711 | const char *leftover = NULL; |
de044b7a | 1712 | int event_type = -1; |
f3ed775e DG |
1713 | |
1714 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1715 | poptReadDefaultConfig(pc, 0); | |
1716 | ||
1717 | /* Default event type */ | |
7a3d1328 | 1718 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1719 | |
1720 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1721 | switch (opt) { | |
1722 | case OPT_HELP: | |
4ba92f18 | 1723 | SHOW_HELP(); |
f3ed775e | 1724 | goto end; |
f3ed775e | 1725 | case OPT_TRACEPOINT: |
e6ddca71 | 1726 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1727 | break; |
cf0e5467 | 1728 | case OPT_PROBE: |
7d29a247 | 1729 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e | 1730 | break; |
dcabc190 FD |
1731 | case OPT_USERSPACE_PROBE: |
1732 | opt_event_type = LTTNG_EVENT_USERSPACE_PROBE; | |
1733 | break; | |
f3ed775e DG |
1734 | case OPT_FUNCTION: |
1735 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b | 1736 | break; |
a54bd42d MD |
1737 | case OPT_SYSCALL: |
1738 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1739 | break; |
eeac7d46 MD |
1740 | case OPT_USERSPACE: |
1741 | opt_userspace = 1; | |
eeac7d46 | 1742 | break; |
0cda4f28 | 1743 | case OPT_LOGLEVEL: |
8005f29a | 1744 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1745 | opt_loglevel = poptGetOptArg(pc); |
1746 | break; | |
1747 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1748 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1749 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1750 | break; |
679b4943 SM |
1751 | case OPT_LIST_OPTIONS: |
1752 | list_cmd_options(stdout, long_options); | |
679b4943 | 1753 | goto end; |
53a80697 MD |
1754 | case OPT_FILTER: |
1755 | break; | |
fac3366c JI |
1756 | case OPT_EXCLUDE: |
1757 | break; | |
f3ed775e | 1758 | default: |
f3ed775e DG |
1759 | ret = CMD_UNDEFINED; |
1760 | goto end; | |
1761 | } | |
de044b7a DG |
1762 | |
1763 | /* Validate event type. Multiple event type are not supported. */ | |
1764 | if (event_type == -1) { | |
1765 | event_type = opt_event_type; | |
1766 | } else { | |
1767 | if (event_type != opt_event_type) { | |
1768 | ERR("Multiple event type not supported."); | |
1769 | ret = CMD_ERROR; | |
1770 | goto end; | |
1771 | } | |
1772 | } | |
f3ed775e DG |
1773 | } |
1774 | ||
3ecec76a | 1775 | ret = print_missing_or_multiple_domains( |
2948cce5 JG |
1776 | opt_kernel + opt_userspace + opt_jul + opt_log4j + |
1777 | opt_python, | |
1778 | true); | |
3ecec76a PP |
1779 | if (ret) { |
1780 | ret = CMD_ERROR; | |
1781 | goto end; | |
1782 | } | |
1783 | ||
89476427 JRJ |
1784 | /* Mi check */ |
1785 | if (lttng_opt_mi) { | |
1786 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1787 | if (!writer) { | |
1788 | ret = -LTTNG_ERR_NOMEM; | |
1789 | goto end; | |
1790 | } | |
1791 | ||
1792 | /* Open command element */ | |
1793 | ret = mi_lttng_writer_command_open(writer, | |
1794 | mi_lttng_element_command_enable_event); | |
1795 | if (ret) { | |
1796 | ret = CMD_ERROR; | |
1797 | goto end; | |
1798 | } | |
1799 | ||
1800 | /* Open output element */ | |
1801 | ret = mi_lttng_writer_open_element(writer, | |
1802 | mi_lttng_element_command_output); | |
1803 | if (ret) { | |
1804 | ret = CMD_ERROR; | |
1805 | goto end; | |
1806 | } | |
1807 | } | |
1808 | ||
f3ed775e DG |
1809 | opt_event_list = (char*) poptGetArg(pc); |
1810 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1811 | ERR("Missing event name(s).\n"); | |
ca1c3607 | 1812 | ret = CMD_ERROR; |
f3ed775e DG |
1813 | goto end; |
1814 | } | |
1815 | ||
68c7f6e5 JD |
1816 | leftover = poptGetArg(pc); |
1817 | if (leftover) { | |
1818 | ERR("Unknown argument: %s", leftover); | |
1819 | ret = CMD_ERROR; | |
1820 | goto end; | |
1821 | } | |
1822 | ||
cd80958d DG |
1823 | if (!opt_session_name) { |
1824 | session_name = get_session_name(); | |
1825 | if (session_name == NULL) { | |
89476427 JRJ |
1826 | command_ret = CMD_ERROR; |
1827 | success = 0; | |
1828 | goto mi_closing; | |
cd80958d DG |
1829 | } |
1830 | } else { | |
1831 | session_name = opt_session_name; | |
1832 | } | |
1833 | ||
89476427 JRJ |
1834 | command_ret = enable_events(session_name); |
1835 | if (command_ret) { | |
1836 | success = 0; | |
1837 | goto mi_closing; | |
1838 | } | |
1839 | ||
1840 | mi_closing: | |
1841 | /* Mi closing */ | |
1842 | if (lttng_opt_mi) { | |
1843 | /* Close output element */ | |
1844 | ret = mi_lttng_writer_close_element(writer); | |
1845 | if (ret) { | |
1846 | ret = CMD_ERROR; | |
1847 | goto end; | |
1848 | } | |
1849 | ||
1850 | ret = mi_lttng_writer_write_element_bool(writer, | |
1851 | mi_lttng_element_command_success, success); | |
1852 | if (ret) { | |
1853 | ret = CMD_ERROR; | |
1854 | goto end; | |
1855 | } | |
1856 | ||
1857 | /* Command element close */ | |
1858 | ret = mi_lttng_writer_command_close(writer); | |
1859 | if (ret) { | |
1860 | ret = CMD_ERROR; | |
1861 | goto end; | |
1862 | } | |
1863 | } | |
f3ed775e DG |
1864 | |
1865 | end: | |
89476427 JRJ |
1866 | /* Mi clean-up */ |
1867 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1868 | /* Preserve original error code */ | |
1869 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1870 | } | |
1871 | ||
cd80958d DG |
1872 | if (opt_session_name == NULL) { |
1873 | free(session_name); | |
1874 | } | |
1875 | ||
89476427 JRJ |
1876 | /* Overwrite ret if an error occurred in enable_events */ |
1877 | ret = command_ret ? command_ret : ret; | |
1878 | ||
ca1c3607 | 1879 | poptFreeContext(pc); |
f3ed775e DG |
1880 | return ret; |
1881 | } | |
9f449915 | 1882 |