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 |
a4b92340 | 19 | #include <assert.h> |
ecc48a90 | 20 | #include <ctype.h> |
f3ed775e DG |
21 | #include <popt.h> |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/types.h> | |
27 | #include <time.h> | |
28 | #include <unistd.h> | |
92360082 | 29 | #include <signal.h> |
bbd44cae | 30 | #include <sys/wait.h> |
f3ed775e | 31 | |
37d03ff7 | 32 | #include <common/mi-lttng.h> |
4a102b75 | 33 | #include <common/config/session-config.h> |
37d03ff7 | 34 | |
c399183f | 35 | #include "../command.h" |
679b4943 | 36 | #include "../utils.h" |
f3ed775e | 37 | |
00e2e675 | 38 | #include <common/defaults.h> |
42224349 | 39 | #include <common/sessiond-comm/sessiond-comm.h> |
00e2e675 | 40 | #include <common/uri.h> |
81b86775 | 41 | #include <common/utils.h> |
16f6f820 | 42 | #include <lttng/snapshot.h> |
42224349 | 43 | |
f3ed775e DG |
44 | static char *opt_output_path; |
45 | static char *opt_session_name; | |
a4b92340 DG |
46 | static char *opt_url; |
47 | static char *opt_ctrl_url; | |
48 | static char *opt_data_url; | |
d7ba1388 | 49 | static char *opt_shm_path; |
4a102b75 | 50 | static char *opt_template_path; |
a4b92340 | 51 | static int opt_no_consumer; |
96fe6b8d | 52 | static int opt_no_output; |
16f6f820 | 53 | static int opt_snapshot; |
ecc48a90 | 54 | static unsigned int opt_live_timer; |
e51a4200 | 55 | static bool opt_default_name; |
f3ed775e DG |
56 | |
57 | enum { | |
58 | OPT_HELP = 1, | |
679b4943 | 59 | OPT_LIST_OPTIONS, |
ecc48a90 | 60 | OPT_LIVE_TIMER, |
e51a4200 | 61 | OPT_DEFAULT_NAME, |
f3ed775e DG |
62 | }; |
63 | ||
05ca94c0 | 64 | enum output_type { |
101fa438 | 65 | OUTPUT_UNKNOWN = -1, |
227bc702 JR |
66 | OUTPUT_NONE, |
67 | OUTPUT_LOCAL, | |
68 | OUTPUT_NET, | |
69 | }; | |
05ca94c0 | 70 | enum session_type { |
101fa438 | 71 | SESSION_UNKNOWN = -1, |
227bc702 JR |
72 | SESSION_NORMAL, |
73 | SESSION_LIVE, | |
74 | SESSION_SNAPSHOT, | |
75 | }; | |
76 | ||
77 | ||
37d03ff7 JRJ |
78 | static struct mi_writer *writer; |
79 | ||
f3ed775e DG |
80 | static struct poptOption long_options[] = { |
81 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
679b4943 SM |
82 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
83 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, | |
84 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
23d14dff DG |
85 | {"set-url", 'U', POPT_ARG_STRING, &opt_url, 0, 0, 0}, |
86 | {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0}, | |
87 | {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0}, | |
96fe6b8d | 88 | {"no-output", 0, POPT_ARG_VAL, &opt_no_output, 1, 0, 0}, |
2bba9e53 | 89 | {"no-consumer", 0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0}, |
16f6f820 | 90 | {"snapshot", 0, POPT_ARG_VAL, &opt_snapshot, 1, 0, 0}, |
d73c5802 | 91 | {"live", 0, POPT_ARG_INT | POPT_ARGFLAG_OPTIONAL, 0, OPT_LIVE_TIMER, 0, 0}, |
d7ba1388 | 92 | {"shm-path", 0, POPT_ARG_STRING, &opt_shm_path, 0, 0, 0}, |
4a102b75 | 93 | {"template-path", 0, POPT_ARG_STRING, &opt_template_path, 0, 0, 0}, |
e51a4200 | 94 | {"default-name", 0, POPT_ARG_NONE, NULL, OPT_DEFAULT_NAME, 0, 0}, |
f3ed775e DG |
95 | {0, 0, 0, 0, 0, 0, 0} |
96 | }; | |
97 | ||
16de1a24 DG |
98 | /* |
99 | * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on | |
100 | * why this declaration exists and used ONLY in for this command. | |
101 | */ | |
07424f16 | 102 | extern int _lttng_create_session_ext(const char *name, const char *url, |
d1edd8a8 | 103 | const char *datetime); |
07424f16 | 104 | |
37d03ff7 | 105 | /* |
485ca16f | 106 | * Retrieve the created session and mi output it based on provided argument |
37d03ff7 JRJ |
107 | * This is currently a summary of what was pretty printed and is subject to |
108 | * enhancements. | |
37d03ff7 JRJ |
109 | */ |
110 | static int mi_created_session(const char *session_name) | |
111 | { | |
112 | int ret, i, count, found; | |
113 | struct lttng_session *sessions; | |
114 | ||
115 | /* session_name should not be null */ | |
116 | assert(session_name); | |
117 | assert(writer); | |
118 | ||
119 | count = lttng_list_sessions(&sessions); | |
120 | if (count < 0) { | |
121 | ret = count; | |
122 | ERR("%s", lttng_strerror(ret)); | |
123 | goto error; | |
124 | } | |
125 | ||
126 | if (count == 0) { | |
127 | ERR("Error session creation failed: session %s not found", session_name); | |
128 | ret = -LTTNG_ERR_SESS_NOT_FOUND; | |
129 | goto end; | |
130 | } | |
131 | ||
132 | found = 0; | |
133 | for (i = 0; i < count; i++) { | |
134 | if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { | |
135 | found = 1; | |
136 | ret = mi_lttng_session(writer, &sessions[i], 0); | |
137 | if (ret) { | |
138 | goto error; | |
139 | } | |
140 | break; | |
141 | } | |
142 | } | |
143 | ||
144 | if (!found) { | |
145 | ret = -LTTNG_ERR_SESS_NOT_FOUND; | |
146 | } else { | |
147 | ret = CMD_SUCCESS; | |
148 | } | |
149 | ||
150 | error: | |
151 | free(sessions); | |
152 | end: | |
153 | return ret; | |
154 | } | |
155 | ||
00e2e675 | 156 | /* |
a4b92340 | 157 | * For a session name, set the consumer URLs. |
00e2e675 | 158 | */ |
a4b92340 DG |
159 | static int set_consumer_url(const char *session_name, const char *ctrl_url, |
160 | const char *data_url) | |
00e2e675 | 161 | { |
a4b92340 DG |
162 | int ret; |
163 | struct lttng_handle *handle; | |
a4b92340 DG |
164 | |
165 | assert(session_name); | |
166 | ||
167 | /* | |
95681498 JG |
168 | * Set handle with the session_name, but no domain. This implies that |
169 | * the actions taken with this handle apply on the tracing session | |
170 | * rather then the domain-specific session. | |
a4b92340 | 171 | */ |
95681498 | 172 | handle = lttng_create_handle(session_name, NULL); |
a4b92340 DG |
173 | if (handle == NULL) { |
174 | ret = CMD_FATAL; | |
175 | goto error; | |
176 | } | |
00e2e675 | 177 | |
a4b92340 DG |
178 | ret = lttng_set_consumer_url(handle, ctrl_url, data_url); |
179 | if (ret < 0) { | |
180 | goto error; | |
00e2e675 DG |
181 | } |
182 | ||
a4b92340 DG |
183 | error: |
184 | lttng_destroy_handle(handle); | |
185 | return ret; | |
186 | } | |
187 | ||
16f6f820 DG |
188 | static int add_snapshot_output(const char *session_name, const char *ctrl_url, |
189 | const char *data_url) | |
190 | { | |
191 | int ret; | |
192 | struct lttng_snapshot_output *output = NULL; | |
193 | ||
194 | assert(session_name); | |
195 | ||
196 | output = lttng_snapshot_output_create(); | |
197 | if (!output) { | |
198 | ret = CMD_FATAL; | |
199 | goto error_create; | |
200 | } | |
201 | ||
202 | if (ctrl_url) { | |
203 | ret = lttng_snapshot_output_set_ctrl_url(ctrl_url, output); | |
204 | if (ret < 0) { | |
205 | goto error; | |
206 | } | |
207 | } | |
208 | ||
209 | if (data_url) { | |
210 | ret = lttng_snapshot_output_set_data_url(data_url, output); | |
211 | if (ret < 0) { | |
212 | goto error; | |
213 | } | |
214 | } | |
215 | ||
216 | /* This call, if successful, populates the id of the output object. */ | |
217 | ret = lttng_snapshot_add_output(session_name, output); | |
218 | if (ret < 0) { | |
219 | goto error; | |
220 | } | |
221 | ||
222 | error: | |
223 | lttng_snapshot_output_destroy(output); | |
224 | error_create: | |
225 | return ret; | |
226 | } | |
227 | ||
227bc702 JR |
228 | /* |
229 | * Validate the combinations of passed options | |
230 | * | |
231 | * CMD_ERROR on error | |
232 | * CMD_SUCCESS on success | |
233 | */ | |
05ca94c0 | 234 | static int validate_command_options(enum session_type type) |
227bc702 JR |
235 | { |
236 | int ret = CMD_SUCCESS; | |
dd4b646b | 237 | |
227bc702 JR |
238 | if (opt_snapshot && opt_live_timer) { |
239 | ERR("Snapshot and live modes are mutually exclusive."); | |
240 | ret = CMD_ERROR; | |
241 | goto error; | |
242 | } | |
243 | ||
244 | if ((!opt_ctrl_url && opt_data_url) || (opt_ctrl_url && !opt_data_url)) { | |
dd4b646b | 245 | ERR("Control and data URLs must both be set."); |
227bc702 JR |
246 | ret = CMD_ERROR; |
247 | goto error; | |
248 | } | |
249 | ||
4a102b75 JR |
250 | if (opt_template_path) { |
251 | /* Restriction on flags exist when using template */ | |
252 | /* Session type flags are not permitted */ | |
253 | /* --live & --snapshot */ | |
05ca94c0 JR |
254 | if ((opt_live_timer && type != SESSION_LIVE) || |
255 | (opt_snapshot && type != SESSION_SNAPSHOT)) { | |
4a102b75 JR |
256 | ERR("It is not possible to change the session type of a template"); |
257 | ret = CMD_ERROR; | |
258 | goto error; | |
259 | } | |
260 | } | |
261 | ||
e51a4200 JG |
262 | if (opt_session_name && opt_default_name) { |
263 | ERR("A session name must not be provided if the --default-name option is used"); | |
264 | ret = CMD_ERROR; | |
265 | goto error; | |
266 | } | |
227bc702 JR |
267 | error: |
268 | return ret; | |
269 | } | |
270 | ||
271 | /* | |
d49b7031 | 272 | * Create a session using direct calls to liblttng-ctl. |
227bc702 JR |
273 | * |
274 | * Return CMD_SUCCESS on success, negative value on internal lttng errors and positive | |
275 | * value on command errors. | |
276 | */ | |
277 | static int create_session_basic (const char *session_name, | |
05ca94c0 | 278 | enum session_type session_type, |
227bc702 | 279 | int live_timer, |
05ca94c0 | 280 | enum output_type output_type, |
227bc702 JR |
281 | const char* url, |
282 | const char* ctrl_url, | |
283 | const char* data_url, | |
284 | const char* shm_path, | |
285 | const char* datetime) | |
286 | { | |
287 | /* Create session based on session creation */ | |
288 | int ret = CMD_SUCCESS; | |
289 | const char *pathname; | |
290 | ||
291 | assert(datetime); | |
292 | ||
293 | if (opt_relayd_path) { | |
294 | pathname = opt_relayd_path; | |
295 | } else { | |
296 | pathname = INSTALL_BIN_PATH "/lttng-relayd"; | |
297 | } | |
298 | ||
299 | switch (session_type) { | |
300 | case SESSION_NORMAL: | |
301 | ret = _lttng_create_session_ext(session_name, url, datetime); | |
302 | break; | |
303 | case SESSION_SNAPSHOT: | |
304 | if (output_type == OUTPUT_NONE) { | |
305 | ERR("--no-output on a snapshot session is invalid"); | |
306 | ret = CMD_UNSUPPORTED; | |
307 | goto error; | |
308 | } | |
309 | ret = lttng_create_session_snapshot(session_name, url); | |
310 | break; | |
311 | case SESSION_LIVE: | |
312 | if (output_type == OUTPUT_NONE) { | |
313 | ERR("--no-output on a live session is invalid"); | |
314 | ret = CMD_UNSUPPORTED; | |
315 | goto error; | |
316 | } | |
317 | ||
318 | if (output_type == OUTPUT_LOCAL) { | |
319 | ERR("Local file output on a live session is invalid"); | |
320 | ret = CMD_UNSUPPORTED; | |
321 | goto error; | |
322 | } | |
323 | if (output_type != OUTPUT_NET && !check_relayd() && | |
324 | spawn_relayd(pathname, 0) < 0) { | |
325 | ret = CMD_FATAL; | |
326 | goto error; | |
327 | } | |
328 | ret = lttng_create_session_live(session_name, url, live_timer); | |
329 | break; | |
330 | default: | |
331 | ERR("Unknown session type"); | |
332 | ret = CMD_UNDEFINED; | |
333 | goto error; | |
334 | } | |
335 | ||
336 | if (ret < 0) { | |
8ad05258 | 337 | /* Don't set ret so the sessiond error is propagated. */ |
227bc702 JR |
338 | switch (-ret) { |
339 | case LTTNG_ERR_EXIST_SESS: | |
340 | WARN("Session %s already exists", session_name); | |
341 | break; | |
342 | default: | |
343 | break; | |
344 | } | |
345 | goto error; | |
346 | } | |
347 | ||
348 | /* Configure the session based on the output type */ | |
349 | switch (output_type) { | |
350 | case OUTPUT_LOCAL: | |
351 | break; | |
352 | case OUTPUT_NET: | |
19ed6174 JR |
353 | if (!ctrl_url || !data_url) { |
354 | break; | |
355 | } | |
356 | ||
227bc702 JR |
357 | if (session_type == SESSION_SNAPSHOT) { |
358 | ret = add_snapshot_output(session_name, ctrl_url, | |
359 | data_url); | |
19ed6174 | 360 | } else { |
227bc702 JR |
361 | /* |
362 | * Normal sessions and live sessions behave the same way | |
363 | * regarding consumer url. | |
364 | */ | |
365 | ret = set_consumer_url(session_name, ctrl_url, data_url); | |
366 | } | |
367 | if (ret < 0) { | |
368 | /* Destroy created session on errors */ | |
369 | lttng_destroy_session(session_name); | |
370 | goto error; | |
371 | } | |
372 | break; | |
373 | case OUTPUT_NONE: | |
374 | break; | |
375 | default: | |
376 | ERR("Unknown output type"); | |
377 | ret = CMD_UNDEFINED; | |
378 | goto error; | |
379 | } | |
380 | ||
381 | /* | |
382 | * Set the session shared memory path | |
383 | */ | |
384 | if (shm_path) { | |
385 | ret = lttng_set_session_shm_path(session_name, shm_path); | |
386 | if (ret < 0) { | |
387 | lttng_destroy_session(session_name); | |
388 | goto error; | |
389 | } | |
390 | } | |
391 | error: | |
392 | return ret; | |
393 | } | |
394 | ||
395 | static int generate_output(const char *session_name, | |
05ca94c0 | 396 | enum session_type session_type, |
227bc702 | 397 | int live_timer, |
05ca94c0 | 398 | enum output_type output_type, |
227bc702 JR |
399 | const char* url, |
400 | const char* ctrl_url, | |
401 | const char* data_url, | |
402 | const char* shm_path) | |
403 | { | |
404 | int ret = CMD_SUCCESS; | |
405 | ||
406 | /* | |
407 | * TODO move this to after session name | |
408 | * for now we only emulate previous behaviour. | |
409 | */ | |
410 | if (session_type != SESSION_SNAPSHOT) { | |
411 | if (ctrl_url) { | |
412 | MSG("Control URL %s set for session %s", ctrl_url, session_name); | |
413 | } | |
414 | ||
415 | if (data_url) { | |
416 | MSG("Data URL %s set for session %s", data_url, session_name); | |
417 | } | |
418 | } | |
419 | ||
420 | if (url && output_type == OUTPUT_LOCAL) { | |
421 | /* Remove the file:// */ | |
422 | if (strlen(url) > strlen("file://")){ | |
423 | url = url + strlen("file://"); | |
424 | } | |
425 | } | |
426 | ||
427 | MSG("Session %s created.", session_name); | |
428 | if (url && session_type != SESSION_SNAPSHOT) { | |
429 | MSG("Traces will be written in %s", url); | |
430 | ||
431 | if (live_timer) { | |
432 | MSG("Live timer set to %u usec", live_timer); | |
433 | } | |
434 | } else if (session_type == SESSION_SNAPSHOT) { | |
435 | if (url) { | |
436 | MSG("Default snapshot output set to: %s", url); | |
437 | } | |
438 | MSG("Snapshot mode set. Every channel enabled for that session will " | |
439 | "be set to mmap output, and default to overwrite mode."); | |
440 | } | |
441 | ||
442 | if (shm_path) { | |
443 | MSG("Session %s set to shm_path: %s.", session_name, | |
444 | shm_path); | |
445 | } | |
446 | ||
447 | /* Mi output */ | |
448 | if (lttng_opt_mi) { | |
449 | ret = mi_created_session(session_name); | |
450 | if (ret) { | |
451 | ret = CMD_ERROR; | |
452 | goto error; | |
453 | } | |
454 | } | |
455 | error: | |
456 | return ret; | |
457 | } | |
458 | ||
4a102b75 JR |
459 | static int parse_template (struct config_document *template, |
460 | char **session_name, | |
05ca94c0 | 461 | enum session_type *session_type, |
4a102b75 | 462 | int *live_timer, |
05ca94c0 | 463 | enum output_type *output_type, |
4a102b75 JR |
464 | char **url, |
465 | char **ctrl_url, | |
466 | char **data_url, | |
467 | char **shm_path) | |
468 | { | |
469 | int ret = 0; | |
b37959c7 | 470 | int printed_bytes; |
4a102b75 JR |
471 | char *raw_value = NULL; |
472 | ||
473 | assert(template); | |
474 | ||
475 | /* Session name */ | |
476 | *session_name = config_document_get_element_value(template,"/sessions/session/name"); | |
477 | ||
478 | /* Check the type of session we have in the template */ | |
479 | if(config_document_element_exist(template, "/sessions/session/attributes/snapshot_mode")) { | |
480 | *session_type = SESSION_SNAPSHOT; | |
481 | } else if (config_document_element_exist(template, "/sessions/session/attributes/live_timer_interval")) { | |
482 | *session_type = SESSION_LIVE; | |
483 | raw_value = config_document_get_element_value(template,"/sessions/session/attributes/live_timer_interval"); | |
484 | *live_timer = config_parse_value(raw_value); | |
485 | free(raw_value); | |
486 | raw_value = NULL; | |
487 | } else { | |
488 | *session_type = SESSION_NORMAL; | |
489 | } | |
490 | ||
491 | /* Output */ | |
492 | switch (*session_type) { | |
493 | case SESSION_NORMAL: | |
494 | case SESSION_LIVE: | |
495 | if (!config_document_element_exist(template, "/sessions/session/output/consumer_output/destination")){ | |
496 | break; | |
497 | } | |
498 | if (config_document_element_exist(template, "/sessions/session/output/consumer_output/destination/path")){ | |
499 | raw_value = config_document_get_element_value(template, "/sessions/session/output/consumer_output/destination/path"); | |
500 | if (!raw_value) { | |
501 | ret = -1; | |
502 | goto error; | |
503 | } | |
504 | ||
505 | if (strlen(raw_value) > 0) { | |
506 | *output_type = OUTPUT_LOCAL; | |
b37959c7 JR |
507 | printed_bytes = asprintf(url, "file://%s", raw_value); |
508 | if (printed_bytes < 0) { | |
4a102b75 JR |
509 | ret = -1; |
510 | goto error; | |
511 | } | |
512 | } else { | |
513 | *output_type = OUTPUT_NONE; | |
514 | } | |
515 | ||
516 | free(raw_value); | |
517 | raw_value = NULL; | |
518 | break; | |
519 | } else if(config_document_element_exist(template, "/sessions/session/output/consumer_output/destination/net_output")) { | |
520 | *ctrl_url = config_document_get_element_value(template, "/sessions/session/output/consumer_output/destination/net_output/control_uri"); | |
521 | *data_url = config_document_get_element_value(template, "/sessions/session/output/consumer_output/destination/net_output/data_uri"); | |
522 | if (!*ctrl_url || ! *data_url) { | |
523 | ret = -1; | |
524 | goto error; | |
525 | } | |
526 | *output_type = OUTPUT_NET; | |
527 | } else { | |
528 | /* There is no output definition */ | |
529 | } | |
530 | break; | |
531 | case SESSION_SNAPSHOT: | |
532 | if (!config_document_element_exist(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination")){ | |
533 | break; | |
534 | } | |
535 | if (config_document_element_exist(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination/path")){ | |
536 | raw_value = config_document_get_element_value(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination/path"); | |
537 | if (!raw_value) { | |
538 | ret = -1; | |
539 | goto error; | |
540 | } | |
541 | ||
542 | if (strlen(raw_value) > 0) { | |
543 | *output_type = OUTPUT_LOCAL; | |
b37959c7 JR |
544 | printed_bytes = asprintf(url, "file://%s", raw_value); |
545 | if (printed_bytes < 0) { | |
4a102b75 JR |
546 | ret = -1; |
547 | goto error; | |
548 | } | |
549 | } else { | |
550 | *output_type = OUTPUT_NONE; | |
551 | } | |
552 | ||
553 | free(raw_value); | |
554 | raw_value = NULL; | |
555 | break; | |
556 | } else if(config_document_element_exist(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination/net_output")) { | |
557 | *ctrl_url = config_document_get_element_value(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination/net_output/control_uri"); | |
558 | *data_url = config_document_get_element_value(template, "/sessions/session/output/snapshot_outputs/output/consumer_output/destination/net_output/data_uri"); | |
559 | if (!*ctrl_url || ! *data_url) { | |
560 | ret = -1; | |
561 | goto error; | |
562 | } | |
563 | *output_type = OUTPUT_NET; | |
564 | } else { | |
565 | /* There is no output definition */ | |
566 | } | |
567 | break; | |
05ca94c0 JR |
568 | case SESSION_UNKNOWN: |
569 | ret = -1; | |
570 | goto error; | |
4a102b75 JR |
571 | } |
572 | ||
573 | ||
574 | /* shared memory path */ | |
575 | *shm_path = config_document_get_element_value(template,"/sessions/session/shared_memory_path"); | |
576 | ||
577 | error: | |
578 | free(raw_value); | |
579 | return ret; | |
580 | ||
581 | } | |
582 | static int create_session_from_template(struct config_document *template, | |
583 | const char *session_name, | |
05ca94c0 | 584 | enum session_type session_type, |
4a102b75 | 585 | int live_timer, |
05ca94c0 | 586 | enum output_type output_type, |
4a102b75 JR |
587 | const char *url, |
588 | const char *ctrl_url, | |
589 | const char *data_url, | |
590 | const char *shm_path, | |
591 | const char *datetime) | |
592 | { | |
593 | int ret = CMD_SUCCESS; | |
b37959c7 | 594 | int printed_bytes; |
4a102b75 JR |
595 | struct config_element *temp_element = NULL; |
596 | struct config_element *temp_element_child = NULL; | |
597 | char tmp_ctrl_uri[PATH_MAX]; | |
598 | char tmp_data_uri[PATH_MAX]; | |
599 | struct lttng_uri *uris = NULL; | |
600 | ssize_t uri_array_size = 0; | |
601 | char *tmp_string = NULL; | |
602 | ||
603 | assert(template); | |
604 | assert(session_name); | |
605 | ||
606 | memset(tmp_ctrl_uri, 0, sizeof(tmp_ctrl_uri)); | |
607 | memset(tmp_data_uri, 0, sizeof(tmp_data_uri)); | |
608 | ||
609 | /* Session name */ | |
610 | if (config_document_element_exist(template, "/sessions/session/name")) { | |
611 | /* Replace the node value */ | |
612 | config_document_replace_element_value(template, "/sessions/session/name", session_name); | |
613 | } else { | |
614 | /* insert the node */ | |
615 | temp_element = config_element_create("name", session_name); | |
616 | if (!temp_element) { | |
617 | ERR("Could not create session name node configuration"); | |
618 | ret = CMD_ERROR; | |
619 | goto error; | |
620 | } | |
621 | ret = config_document_insert_element(template, "/sessions/session", temp_element); | |
622 | if (ret) { | |
623 | ERR("Could not insert session name node configuration"); | |
624 | ret = CMD_ERROR; | |
625 | goto error; | |
626 | } | |
627 | config_element_free(temp_element); | |
628 | } | |
629 | ||
630 | /* | |
631 | * Live timer | |
632 | */ | |
633 | if (session_type == SESSION_LIVE) { | |
634 | if (config_document_element_exist(template, "/sessions/session/attributes/live_timer_interval")) { | |
b37959c7 JR |
635 | printed_bytes = asprintf(&tmp_string, "%d", live_timer); |
636 | if (printed_bytes < 0) { | |
af7f3c88 JR |
637 | ERR("Asprintf failed for live timer"); |
638 | ret = CMD_ERROR; | |
639 | goto error; | |
640 | } | |
641 | ret = config_document_replace_element_value(template, "/sessions/session/attributes/live_timer_interval", tmp_string); | |
642 | ||
643 | if (ret) { | |
644 | printf("error: %d\n", ret); | |
645 | ERR("Replacement of live_timer_interval failed"); | |
646 | ret = CMD_ERROR; | |
647 | goto error; | |
648 | } | |
649 | ||
4a102b75 JR |
650 | free(tmp_string); |
651 | tmp_string = NULL; | |
652 | } else { | |
653 | ERR("Invalid live timer template. Missing live timer node"); | |
654 | ret = CMD_ERROR; | |
655 | goto error; | |
656 | } | |
657 | ||
658 | } | |
659 | ||
660 | /* | |
661 | * Generate the output node | |
662 | */ | |
663 | ||
664 | /* Get output from urls */ | |
665 | if (url) { | |
666 | /* Get lttng uris from single url */ | |
667 | uri_array_size = uri_parse_str_urls(url, NULL, &uris); | |
668 | if (uri_array_size < 0) { | |
669 | ret = CMD_ERROR; | |
670 | goto error; | |
671 | } | |
672 | } else if (ctrl_url && data_url) { | |
673 | uri_array_size = uri_parse_str_urls(ctrl_url, data_url, &uris); | |
674 | if (uri_array_size < 0) { | |
675 | ret = CMD_ERROR; | |
676 | goto error; | |
677 | } | |
678 | } else { | |
679 | /* --no-output */ | |
680 | uri_array_size = 0; | |
681 | } | |
682 | ||
683 | /* Validate if the session output type still match the passed data */ | |
684 | if ( (uri_array_size == 0 && output_type != OUTPUT_NONE) || | |
685 | (uri_array_size == 1 && output_type != OUTPUT_LOCAL) || | |
686 | (uri_array_size == 2 && output_type != OUTPUT_NET)) { | |
687 | ERR("Overwriting value for output do not match the base output type"); | |
688 | ret = CMD_ERROR; | |
689 | goto error; | |
690 | } | |
691 | ||
692 | switch (output_type) { | |
693 | case OUTPUT_NONE: | |
694 | temp_element_child = config_element_create("path", ""); | |
695 | if (!temp_element_child) { | |
696 | ERR("Could not create empty path node configuration"); | |
697 | ret = CMD_ERROR; | |
698 | goto error; | |
699 | } | |
700 | break; | |
701 | case OUTPUT_LOCAL: | |
702 | temp_element_child = config_element_create("path", uris[0].dst.path); | |
703 | if (!temp_element_child) { | |
704 | ERR("Could not create local path node configuration"); | |
705 | ret = CMD_ERROR; | |
706 | goto error; | |
707 | } | |
708 | break; | |
709 | case OUTPUT_NET: | |
710 | uri_to_str_url(&uris[0], tmp_ctrl_uri, sizeof(tmp_ctrl_uri)); | |
711 | uri_to_str_url(&uris[1], tmp_data_uri, sizeof(tmp_data_uri)); | |
712 | ||
713 | temp_element_child = config_element_create("net_output", NULL); | |
714 | if (!temp_element_child) { | |
715 | ERR("Could not create net_output node configuration"); | |
716 | ret = CMD_ERROR; | |
717 | goto error; | |
718 | } | |
719 | ||
720 | temp_element = config_element_create("control_uri", tmp_ctrl_uri); | |
721 | if (!temp_element_child) { | |
722 | ERR("Could not create ctrl uri node configuration"); | |
723 | ret = CMD_ERROR; | |
724 | goto error; | |
725 | } | |
726 | ||
727 | ret = config_element_add_child(temp_element_child, temp_element); | |
728 | if (ret) { | |
729 | ERR("Could not append control uri to the net_output node configuration"); | |
730 | ret = CMD_ERROR; | |
731 | goto error; | |
732 | } | |
2f0e04ab | 733 | |
4a102b75 | 734 | config_element_free(temp_element); |
2f0e04ab | 735 | temp_element = NULL; |
4a102b75 JR |
736 | |
737 | temp_element = config_element_create("data_uri", tmp_data_uri); | |
738 | ||
739 | if (!temp_element_child) { | |
740 | ERR("Could not create data_uri configuration"); | |
741 | ret = CMD_ERROR; | |
742 | goto error; | |
743 | } | |
744 | ||
745 | ret = config_element_add_child(temp_element_child, temp_element); | |
746 | if (ret) { | |
747 | ERR("Could not append data uri to the net_output node configuration"); | |
748 | ret = CMD_ERROR; | |
749 | goto error; | |
750 | } | |
751 | config_element_free(temp_element); | |
2f0e04ab | 752 | temp_element = NULL; |
4a102b75 JR |
753 | break; |
754 | default: | |
755 | ret = CMD_ERROR; | |
756 | goto error; | |
757 | } | |
758 | ||
759 | temp_element = config_element_create("destination", NULL); | |
760 | if (!temp_element) { | |
761 | ERR("Could not create destination node configuration"); | |
762 | ret = CMD_ERROR; | |
763 | goto error; | |
764 | } | |
765 | ||
766 | ret = config_element_add_child(temp_element, temp_element_child); | |
767 | if (ret) { | |
768 | ERR("Could not append output data to the destination node configuration"); | |
769 | ret = CMD_ERROR; | |
770 | goto error; | |
771 | } | |
772 | ||
2f0e04ab JR |
773 | config_element_free(temp_element_child); |
774 | temp_element_child = NULL; | |
775 | ||
e0988a8c JR |
776 | /* Construct the output/consumer_output/ node*/ |
777 | temp_element_child = temp_element; | |
778 | temp_element = config_element_create("consumer_output", NULL); | |
779 | if (!temp_element) { | |
780 | ERR("Could not create consumer_output node configuration"); | |
781 | ret = CMD_ERROR; | |
782 | goto error; | |
783 | } | |
784 | ||
785 | ret = config_element_add_child(temp_element, temp_element_child); | |
786 | if (ret) { | |
787 | ERR("Could not append output data to the consumer_output node configuration"); | |
788 | ret = CMD_ERROR; | |
789 | goto error; | |
790 | } | |
791 | ||
792 | config_element_free(temp_element_child); | |
793 | temp_element_child = config_element_create("enabled", "true"); | |
794 | if (!temp_element_child) { | |
795 | ERR("Could not create enbaled node configuration"); | |
796 | ret = CMD_ERROR; | |
797 | goto error; | |
798 | } | |
799 | ||
800 | ret = config_element_add_child(temp_element, temp_element_child); | |
801 | if (ret) { | |
802 | ERR("Could not append node to the consumer_output node configuration"); | |
803 | ret = CMD_ERROR; | |
804 | goto error; | |
805 | } | |
806 | ||
807 | config_element_free(temp_element_child); | |
808 | temp_element_child = NULL; | |
809 | ||
810 | ||
811 | temp_element_child = temp_element; | |
812 | temp_element = config_element_create("output", NULL); | |
813 | if (!temp_element) { | |
814 | ERR("Could not create output node configuration"); | |
815 | ret = CMD_ERROR; | |
816 | goto error; | |
817 | } | |
818 | ||
819 | ret = config_element_add_child(temp_element, temp_element_child); | |
820 | if (ret) { | |
821 | ERR("Could not append output data to the output node configuration"); | |
822 | ret = CMD_ERROR; | |
823 | goto error; | |
824 | } | |
825 | ||
826 | config_element_free(temp_element_child); | |
827 | temp_element_child = NULL; | |
828 | ||
2f0e04ab | 829 | |
4a102b75 JR |
830 | /* |
831 | * validate and replace the destination node for each session type | |
832 | * TODO: export string as const and simply assign a base path for the | |
833 | * destination node based on the session type | |
834 | **/ | |
835 | switch (session_type) { | |
836 | case SESSION_NORMAL: | |
837 | case SESSION_LIVE: | |
e0988a8c JR |
838 | break; |
839 | case SESSION_SNAPSHOT: | |
840 | /* construct the output/snapshots_outputs/ */ | |
841 | temp_element_child = temp_element; | |
842 | temp_element = config_element_create("snapshot_outputs", NULL); | |
843 | if (!temp_element) { | |
844 | ERR("Could not create snapshot_outputs node configuration"); | |
4a102b75 JR |
845 | ret = CMD_ERROR; |
846 | goto error; | |
847 | } | |
848 | ||
e0988a8c JR |
849 | ret = config_element_add_child(temp_element, temp_element_child); |
850 | if (ret) { | |
851 | ERR("Could not append output data to the snapshot_outputs node configuration"); | |
4a102b75 JR |
852 | ret = CMD_ERROR; |
853 | goto error; | |
854 | } | |
855 | ||
e0988a8c JR |
856 | config_element_free(temp_element_child); |
857 | temp_element_child = NULL; | |
858 | ||
859 | temp_element_child = temp_element; | |
860 | temp_element = config_element_create("output", NULL); | |
861 | if (!temp_element) { | |
862 | ERR("Could not create output node configuration"); | |
863 | ret = CMD_ERROR; | |
864 | goto error; | |
865 | } | |
866 | ||
867 | ret = config_element_add_child(temp_element, temp_element_child); | |
868 | if (ret) { | |
869 | ERR("Could not append output data to the output node configuration"); | |
870 | ret = CMD_ERROR; | |
871 | goto error; | |
872 | } | |
873 | ||
874 | config_element_free(temp_element_child); | |
875 | temp_element_child = NULL; | |
4a102b75 JR |
876 | break; |
877 | default: | |
878 | ERR("Invalid session type"); | |
879 | ret = CMD_UNDEFINED; | |
880 | goto error; | |
881 | } | |
882 | ||
e0988a8c JR |
883 | if (!config_document_element_exist(template, "/sessions/session/output")) { |
884 | ret = config_document_insert_element(template, "/sessions/session", temp_element); | |
885 | } else { | |
886 | ret = config_document_replace_element(template, "/sessions/session/output", temp_element); | |
887 | } | |
888 | ||
2f0e04ab JR |
889 | config_element_free(temp_element); |
890 | temp_element = NULL; | |
4a102b75 | 891 | |
0709e00e JR |
892 | if (ret) { |
893 | ERR("%s", lttng_strerror(ret)); | |
894 | ret = CMD_ERROR; | |
895 | goto error; | |
896 | } | |
897 | ||
4a102b75 JR |
898 | |
899 | /* Shm path */ | |
900 | if (shm_path && config_document_element_exist(template, "/sessions/session/shared_memory_path")) { | |
901 | /* Replace the node value */ | |
902 | config_document_replace_element_value(template, "/sessions/session/shared_memory_path", shm_path); | |
903 | } else if (shm_path) { | |
904 | /* insert the node */ | |
905 | temp_element = config_element_create("shared_memory_path", shm_path); | |
906 | if (!temp_element) { | |
907 | ERR("Could not create shared_memory_path node configuration"); | |
908 | ret = CMD_ERROR; | |
909 | goto error; | |
910 | } | |
911 | ret = config_document_insert_element(template, "/sessions/session", temp_element); | |
912 | if (ret) { | |
913 | ERR("Could not insert shared_memory_path node configuration"); | |
914 | ret = CMD_ERROR; | |
915 | goto error; | |
916 | } | |
2f0e04ab JR |
917 | |
918 | config_element_free(temp_element); | |
919 | temp_element = NULL; | |
4a102b75 JR |
920 | } |
921 | ||
922 | ret = config_load_configuration_sessions(template, session_name, 0); | |
923 | ||
924 | ||
925 | error: | |
926 | config_element_free(temp_element); | |
927 | config_element_free(temp_element_child); | |
928 | free(tmp_string); | |
929 | free(uris); | |
930 | return ret; | |
931 | ||
932 | } | |
933 | ||
f3ed775e | 934 | /* |
1c8d13c8 TD |
935 | * Create a tracing session. |
936 | * If no name is specified, a default name is generated. | |
f3ed775e | 937 | * |
1c8d13c8 | 938 | * Returns one of the CMD_* result constants. |
f3ed775e | 939 | */ |
a4b92340 | 940 | static int create_session(void) |
f3ed775e | 941 | { |
a4b92340 | 942 | int ret; |
b37959c7 | 943 | int printed_bytes; |
227bc702 | 944 | |
4a102b75 JR |
945 | |
946 | /* Template */ | |
947 | struct config_document *template = NULL; | |
948 | ||
227bc702 | 949 | /* Base data */ |
05ca94c0 JR |
950 | enum session_type base_session_type = SESSION_UNKNOWN; |
951 | enum output_type base_output_type = OUTPUT_UNKNOWN; | |
227bc702 JR |
952 | char *base_session_name = NULL; |
953 | char *base_url = NULL; | |
954 | char *base_ctrl_url = NULL; | |
955 | char *base_data_url = NULL; | |
956 | char *base_shm_path = NULL; | |
957 | int base_live_timer = 0; | |
958 | ||
959 | /* Time data */ | |
960 | char datetime[16]; | |
f3ed775e | 961 | time_t rawtime; |
227bc702 JR |
962 | struct tm *timeinfo = NULL; |
963 | ||
964 | /* Temporary variables */ | |
965 | char *traces_path = NULL; | |
966 | char *temp_url = NULL; | |
967 | char *session_name_date = NULL; | |
968 | char *tmp_url = NULL; | |
969 | char *tmp_home_path = NULL; | |
970 | struct lttng_uri *uris = NULL; | |
971 | ssize_t uri_array_size = 0; | |
972 | ||
f3ed775e | 973 | |
d6175221 DG |
974 | /* Get date and time for automatic session name/path */ |
975 | time(&rawtime); | |
976 | timeinfo = localtime(&rawtime); | |
977 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
978 | ||
4a102b75 JR |
979 | if (opt_template_path) { |
980 | /* Restriction on flags exist when using template */ | |
981 | /* Session type flags are not permitted */ | |
982 | /* --live & --snapshot */ | |
983 | template = config_document_get(opt_template_path); | |
984 | if (!template) { | |
985 | ERR("Template could not be parsed"); | |
986 | ret = CMD_ERROR; | |
987 | goto error; | |
988 | } | |
989 | /* Load info from template if any */ | |
990 | /* TODO: might want to use a struct in the end for the session... */ | |
991 | ret = parse_template(template, &base_session_name, | |
992 | &base_session_type, | |
993 | &base_live_timer, | |
994 | &base_output_type, | |
995 | &base_url, | |
996 | &base_ctrl_url, | |
997 | &base_data_url, | |
998 | &base_shm_path); | |
8e4afd43 JR |
999 | if (ret) { |
1000 | goto error; | |
1001 | } | |
4a102b75 JR |
1002 | } |
1003 | ||
1004 | /* Option validation */ | |
1005 | if (validate_command_options(base_session_type) != CMD_SUCCESS) { | |
1006 | ret = CMD_ERROR; | |
1007 | goto error; | |
1008 | } | |
1009 | ||
227bc702 JR |
1010 | /* Find the session type based on options */ |
1011 | if(base_session_type == SESSION_UNKNOWN) { | |
1012 | if (opt_snapshot) { | |
1013 | base_session_type = SESSION_SNAPSHOT; | |
1014 | } else if (opt_live_timer) { | |
1015 | base_session_type = SESSION_LIVE; | |
1016 | } else { | |
1017 | base_session_type = SESSION_NORMAL; | |
07424f16 | 1018 | } |
227bc702 JR |
1019 | } |
1020 | ||
1021 | /* | |
1022 | * Session name handling | |
1023 | */ | |
1024 | if (opt_session_name) { | |
1025 | /* Override the session name */ | |
487b253b DG |
1026 | if (strlen(opt_session_name) > NAME_MAX) { |
1027 | ERR("Session name too long. Length must be lower or equal to %d", | |
1028 | NAME_MAX); | |
1029 | ret = LTTNG_ERR_SESSION_FAIL; | |
227bc702 | 1030 | free(session_name_date); |
487b253b DG |
1031 | goto error; |
1032 | } | |
4b861950 DG |
1033 | /* |
1034 | * Check if the session name begins with "auto-" or is exactly "auto". | |
1035 | * Both are reserved for the default session name. See bug #449 to | |
1036 | * understand why we need to check both here. | |
1037 | */ | |
1038 | if ((strncmp(opt_session_name, DEFAULT_SESSION_NAME "-", | |
227bc702 JR |
1039 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) || |
1040 | (strncmp(opt_session_name, DEFAULT_SESSION_NAME, | |
1041 | strlen(DEFAULT_SESSION_NAME)) == 0 && | |
67238b20 | 1042 | strlen(opt_session_name) == strlen(DEFAULT_SESSION_NAME))) { |
61b35a5a DG |
1043 | ERR("%s is a reserved keyword for default session(s)", |
1044 | DEFAULT_SESSION_NAME); | |
227bc702 JR |
1045 | |
1046 | ret = CMD_ERROR; | |
1047 | goto error; | |
1048 | } | |
1049 | ||
1050 | base_session_name = strndup(opt_session_name, NAME_MAX); | |
1051 | if (!base_session_name) { | |
1052 | PERROR("Strdup session name"); | |
61b35a5a DG |
1053 | ret = CMD_ERROR; |
1054 | goto error; | |
1055 | } | |
227bc702 | 1056 | |
b37959c7 JR |
1057 | printed_bytes = asprintf(&session_name_date, "%s-%s", base_session_name, datetime); |
1058 | if (printed_bytes < 0) { | |
227bc702 | 1059 | PERROR("Asprintf session name"); |
af7f3c88 | 1060 | ret = CMD_ERROR; |
227bc702 JR |
1061 | goto error; |
1062 | } | |
1063 | DBG("Session name from command option set to %s", base_session_name); | |
e51a4200 | 1064 | } else if (base_session_name && !opt_default_name) { |
b37959c7 JR |
1065 | printed_bytes = asprintf(&session_name_date, "%s-%s", base_session_name, datetime); |
1066 | if (printed_bytes < 0) { | |
227bc702 | 1067 | PERROR("Asprintf session name"); |
af7f3c88 | 1068 | ret = CMD_ERROR; |
227bc702 JR |
1069 | goto error; |
1070 | } | |
1071 | } else { | |
1072 | /* Generate a name */ | |
b37959c7 JR |
1073 | printed_bytes = asprintf(&base_session_name, DEFAULT_SESSION_NAME "-%s", datetime); |
1074 | if (printed_bytes < 0) { | |
6af1d7e6 | 1075 | PERROR("Asprintf session name"); |
af7f3c88 | 1076 | ret = CMD_ERROR; |
07424f16 DG |
1077 | goto error; |
1078 | } | |
227bc702 JR |
1079 | session_name_date = strdup(base_session_name); |
1080 | DBG("Auto session name set to %s", base_session_name); | |
f3ed775e DG |
1081 | } |
1082 | ||
227bc702 JR |
1083 | |
1084 | /* | |
1085 | * Output handling | |
1086 | */ | |
1087 | ||
1088 | /* | |
1089 | * If any of those options are present clear all output related data. | |
1090 | */ | |
1091 | if (opt_output_path || opt_url || (opt_ctrl_url && opt_data_url) || opt_no_output) { | |
1092 | /* Overwrite output */ | |
1093 | free(base_url); | |
1094 | free(base_ctrl_url); | |
1095 | free(base_data_url); | |
1096 | base_url = NULL; | |
1097 | base_ctrl_url = NULL; | |
1098 | base_data_url = NULL; | |
1a241656 DG |
1099 | } |
1100 | ||
227bc702 JR |
1101 | if (opt_output_path) { |
1102 | ||
81b86775 | 1103 | traces_path = utils_expand_path(opt_output_path); |
227bc702 | 1104 | if (!traces_path) { |
00e2e675 DG |
1105 | ret = CMD_ERROR; |
1106 | goto error; | |
1107 | } | |
1108 | ||
37d03ff7 | 1109 | /* Create URL string from the local file system path */ |
b37959c7 JR |
1110 | printed_bytes = asprintf(&temp_url, "file://%s", traces_path); |
1111 | if (printed_bytes < 0) { | |
a4b92340 | 1112 | PERROR("asprintf url path"); |
00e2e675 DG |
1113 | ret = CMD_FATAL; |
1114 | goto error; | |
1115 | } | |
227bc702 JR |
1116 | |
1117 | base_url = temp_url; | |
a4b92340 | 1118 | } else if (opt_url) { /* Handling URL (-U opt) */ |
227bc702 | 1119 | base_url = strdup(opt_url); |
1a241656 DG |
1120 | } else if (opt_data_url && opt_ctrl_url) { |
1121 | /* | |
227bc702 JR |
1122 | * With both control and data, we'll be setting the consumer URL |
1123 | * after session creation thus use no URL. | |
1a241656 | 1124 | */ |
227bc702 JR |
1125 | base_ctrl_url = strdup(opt_ctrl_url); |
1126 | base_data_url = strdup(opt_data_url); | |
1127 | } else if (!(opt_no_output || base_output_type == OUTPUT_NONE || | |
1128 | base_url || base_ctrl_url || base_data_url)) { | |
1129 | /* Generate default output depending on the session type */ | |
1130 | switch (base_session_type) { | |
1131 | case SESSION_NORMAL: | |
1132 | /* fallthrough */ | |
1133 | case SESSION_SNAPSHOT: | |
1134 | /* Default to a local path */ | |
1135 | tmp_home_path = utils_get_home_dir(); | |
1136 | if (tmp_home_path == NULL) { | |
1137 | ERR("HOME path not found.\n \ | |
1138 | Please specify an output path using -o, --output PATH"); | |
1139 | ret = CMD_FATAL; | |
1140 | goto error; | |
1141 | } | |
ecc48a90 | 1142 | |
b37959c7 | 1143 | printed_bytes = asprintf(&tmp_url, |
227bc702 JR |
1144 | "file://%s/" DEFAULT_TRACE_DIR_NAME "/%s", |
1145 | tmp_home_path, session_name_date); | |
16f6f820 | 1146 | |
b37959c7 | 1147 | if (printed_bytes < 0) { |
227bc702 JR |
1148 | PERROR("asprintf trace dir name"); |
1149 | ret = CMD_FATAL; | |
1150 | goto error; | |
1151 | } | |
8960e9cd | 1152 | |
227bc702 | 1153 | base_url = tmp_url ; |
42224349 | 1154 | break; |
227bc702 JR |
1155 | case SESSION_LIVE: |
1156 | /* Default to a net output */ | |
b37959c7 JR |
1157 | printed_bytes = asprintf(&tmp_url, "net://127.0.0.1"); |
1158 | if (printed_bytes < 0) { | |
227bc702 JR |
1159 | PERROR("asprintf default live URL"); |
1160 | ret = CMD_FATAL; | |
1161 | goto error; | |
1162 | } | |
1163 | base_url = tmp_url ; | |
60e835ca | 1164 | break; |
227bc702 JR |
1165 | default: |
1166 | ERR("Unknown session type"); | |
1167 | ret = CMD_FATAL; | |
a4b92340 DG |
1168 | goto error; |
1169 | } | |
4f50c803 DG |
1170 | } |
1171 | ||
227bc702 JR |
1172 | /* |
1173 | * Shared memory path handling | |
1174 | */ | |
d7ba1388 | 1175 | if (opt_shm_path) { |
af7f3c88 JR |
1176 | /* Overwrite shm_path so clear any previously defined one */ |
1177 | free(base_shm_path); | |
b37959c7 JR |
1178 | printed_bytes = asprintf(&base_shm_path, "%s/%s", opt_shm_path, session_name_date); |
1179 | if (printed_bytes < 0) { | |
227bc702 | 1180 | PERROR("asprintf shm_path"); |
af7f3c88 | 1181 | ret = CMD_FATAL; |
d7ba1388 MD |
1182 | goto error; |
1183 | } | |
1184 | } | |
1185 | ||
227bc702 JR |
1186 | /* |
1187 | * Live timer handling | |
1188 | */ | |
1189 | if (opt_live_timer) { | |
1190 | base_live_timer = opt_live_timer; | |
1191 | } | |
d73c5802 | 1192 | |
227bc702 | 1193 | /* Get output type from urls */ |
b37959c7 | 1194 | /* TODO: Find a better way of inferring output type */ |
227bc702 JR |
1195 | if (base_url) { |
1196 | /* Get lttng uris from single url */ | |
1197 | uri_array_size = uri_parse_str_urls(base_url, NULL, &uris); | |
1198 | if (uri_array_size < 0) { | |
1199 | ret = CMD_ERROR; | |
1200 | goto error; | |
d73c5802 | 1201 | } |
227bc702 JR |
1202 | } else if (base_ctrl_url && base_data_url) { |
1203 | uri_array_size = uri_parse_str_urls(base_ctrl_url, base_data_url, &uris); | |
1204 | if (uri_array_size < 0) { | |
1205 | ret = CMD_ERROR; | |
1206 | goto error; | |
16f6f820 | 1207 | } |
227bc702 JR |
1208 | } else { |
1209 | /* --no-output */ | |
1210 | uri_array_size = 0; | |
1211 | } | |
1212 | ||
1213 | switch (uri_array_size) { | |
1214 | case 0: | |
1215 | base_output_type = OUTPUT_NONE; | |
1216 | break; | |
1217 | case 1: | |
1218 | base_output_type = OUTPUT_LOCAL; | |
1219 | break; | |
1220 | case 2: | |
1221 | base_output_type = OUTPUT_NET; | |
1222 | break; | |
1223 | default: | |
1224 | ret = CMD_ERROR; | |
1225 | goto error; | |
a4b92340 | 1226 | } |
227bc702 | 1227 | |
4a102b75 JR |
1228 | if (template) { |
1229 | ret = create_session_from_template(template, | |
1230 | base_session_name, | |
1231 | base_session_type, | |
1232 | base_live_timer, | |
1233 | base_output_type, | |
1234 | base_url, | |
1235 | base_ctrl_url, | |
1236 | base_data_url, | |
1237 | base_shm_path, | |
1238 | datetime); | |
1239 | } else { | |
b37959c7 | 1240 | ret = create_session_basic(base_session_name, |
4a102b75 JR |
1241 | base_session_type, |
1242 | base_live_timer, | |
1243 | base_output_type, | |
1244 | base_url, | |
1245 | base_ctrl_url, | |
1246 | base_data_url, | |
1247 | base_shm_path, | |
1248 | datetime); | |
1249 | } | |
227bc702 JR |
1250 | if (ret) { |
1251 | goto error; | |
d7ba1388 | 1252 | } |
a4b92340 | 1253 | |
b37959c7 | 1254 | ret = generate_output(base_session_name, |
227bc702 JR |
1255 | base_session_type, |
1256 | base_live_timer, | |
1257 | base_output_type, | |
1258 | base_url, | |
1259 | base_ctrl_url, | |
1260 | base_data_url, | |
1261 | base_shm_path); | |
1262 | if (ret) { | |
1263 | goto error; | |
37d03ff7 JRJ |
1264 | } |
1265 | ||
58a97671 | 1266 | /* Init lttng session config */ |
227bc702 | 1267 | ret = config_init(base_session_name); |
f3ed775e | 1268 | if (ret < 0) { |
27089920 | 1269 | ret = CMD_ERROR; |
f3ed775e DG |
1270 | goto error; |
1271 | } | |
1272 | ||
f3ed775e DG |
1273 | ret = CMD_SUCCESS; |
1274 | ||
1275 | error: | |
227bc702 | 1276 | /* Session temp stuff */ |
2f0e04ab | 1277 | config_document_free(template); |
227bc702 | 1278 | free(session_name_date); |
227bc702 | 1279 | free(uris); |
2f0e04ab | 1280 | free(traces_path); |
a4b92340 DG |
1281 | |
1282 | if (ret < 0) { | |
1283 | ERR("%s", lttng_strerror(ret)); | |
1284 | } | |
67238b20 | 1285 | |
227bc702 JR |
1286 | free(base_session_name); |
1287 | free(base_url); | |
1288 | free(base_ctrl_url); | |
1289 | free(base_data_url); | |
1290 | free(base_shm_path); | |
f3ed775e DG |
1291 | return ret; |
1292 | } | |
1293 | ||
92360082 JG |
1294 | /* |
1295 | * spawn_sessiond | |
1296 | * | |
1297 | * Spawn a session daemon by forking and execv. | |
1298 | */ | |
1299 | static int spawn_sessiond(char *pathname) | |
1300 | { | |
1301 | int ret = 0; | |
1302 | pid_t pid; | |
1303 | ||
1304 | MSG("Spawning a session daemon"); | |
92360082 JG |
1305 | pid = fork(); |
1306 | if (pid == 0) { | |
1307 | /* | |
bbd44cae | 1308 | * Spawn session daemon in daemon mode. |
92360082 | 1309 | */ |
bbd44cae PP |
1310 | execlp(pathname, "lttng-sessiond", |
1311 | "--daemonize", NULL); | |
92360082 JG |
1312 | /* execlp only returns if error happened */ |
1313 | if (errno == ENOENT) { | |
1314 | ERR("No session daemon found. Use --sessiond-path."); | |
1315 | } else { | |
1316 | PERROR("execlp"); | |
1317 | } | |
1318 | kill(getppid(), SIGTERM); /* wake parent */ | |
1319 | exit(EXIT_FAILURE); | |
1320 | } else if (pid > 0) { | |
92360082 | 1321 | /* |
bbd44cae PP |
1322 | * In daemon mode (--daemonize), sessiond only exits when |
1323 | * it's ready to accept commands. | |
92360082 | 1324 | */ |
bbd44cae | 1325 | for (;;) { |
81527d36 JG |
1326 | int status; |
1327 | pid_t wait_pid_ret = waitpid(pid, &status, 0); | |
1328 | ||
1329 | if (wait_pid_ret < 0) { | |
1330 | if (errno == EINTR) { | |
1331 | continue; | |
1332 | } | |
1333 | PERROR("waitpid"); | |
1334 | ret = -errno; | |
1335 | goto end; | |
1336 | } | |
bbd44cae PP |
1337 | |
1338 | if (WIFSIGNALED(status)) { | |
1339 | ERR("Session daemon was killed by signal %d", | |
1340 | WTERMSIG(status)); | |
1341 | ret = -1; | |
1342 | goto end; | |
1343 | } else if (WIFEXITED(status)) { | |
1344 | DBG("Session daemon terminated normally (exit status: %d)", | |
1345 | WEXITSTATUS(status)); | |
1346 | ||
1347 | if (WEXITSTATUS(status) != 0) { | |
1348 | ERR("Session daemon terminated with an error (exit status: %d)", | |
1349 | WEXITSTATUS(status)); | |
1350 | ret = -1; | |
1351 | goto end; | |
1352 | } | |
1353 | break; | |
1354 | } | |
92360082 | 1355 | } |
bbd44cae | 1356 | |
92360082 JG |
1357 | goto end; |
1358 | } else { | |
1359 | PERROR("fork"); | |
1360 | ret = -1; | |
1361 | goto end; | |
1362 | } | |
1363 | ||
1364 | end: | |
1365 | return ret; | |
1366 | } | |
1367 | ||
1368 | /* | |
1369 | * launch_sessiond | |
1370 | * | |
1371 | * Check if the session daemon is available using | |
1372 | * the liblttngctl API for the check. If not, try to | |
1373 | * spawn a daemon. | |
1374 | */ | |
1375 | static int launch_sessiond(void) | |
1376 | { | |
1377 | int ret; | |
1378 | char *pathname = NULL; | |
1379 | ||
1380 | ret = lttng_session_daemon_alive(); | |
1381 | if (ret) { | |
1382 | /* Sessiond is alive, not an error */ | |
1383 | ret = 0; | |
1384 | goto end; | |
1385 | } | |
1386 | ||
1387 | /* Try command line option path */ | |
1388 | pathname = opt_sessiond_path; | |
1389 | ||
1390 | /* Try LTTNG_SESSIOND_PATH env variable */ | |
1391 | if (pathname == NULL) { | |
1392 | pathname = getenv(DEFAULT_SESSIOND_PATH_ENV); | |
1393 | } | |
1394 | ||
1395 | /* Try with configured path */ | |
1396 | if (pathname == NULL) { | |
1397 | if (CONFIG_SESSIOND_BIN[0] != '\0') { | |
1398 | pathname = CONFIG_SESSIOND_BIN; | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | /* Try the default path */ | |
1403 | if (pathname == NULL) { | |
1404 | pathname = INSTALL_BIN_PATH "/lttng-sessiond"; | |
1405 | } | |
1406 | ||
1407 | DBG("Session daemon binary path: %s", pathname); | |
1408 | ||
1409 | /* Check existence and permissions */ | |
1410 | ret = access(pathname, F_OK | X_OK); | |
1411 | if (ret < 0) { | |
1412 | ERR("No such file or access denied: %s", pathname); | |
1413 | goto end; | |
1414 | } | |
1415 | ||
1416 | ret = spawn_sessiond(pathname); | |
92360082 | 1417 | end: |
0f4fa0d2 JG |
1418 | if (ret) { |
1419 | ERR("Problem occurred while launching session daemon (%s)", | |
1420 | pathname); | |
1421 | } | |
92360082 JG |
1422 | return ret; |
1423 | } | |
1424 | ||
f3ed775e | 1425 | /* |
74cc1d0f | 1426 | * The 'create <options>' first level command |
1c8d13c8 TD |
1427 | * |
1428 | * Returns one of the CMD_* result constants. | |
f3ed775e DG |
1429 | */ |
1430 | int cmd_create(int argc, const char **argv) | |
1431 | { | |
37d03ff7 | 1432 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
ecc48a90 | 1433 | char *opt_arg = NULL; |
f3ed775e DG |
1434 | static poptContext pc; |
1435 | ||
1436 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1437 | poptReadDefaultConfig(pc, 0); | |
1438 | ||
1439 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1440 | switch (opt) { | |
1441 | case OPT_HELP: | |
4ba92f18 | 1442 | SHOW_HELP(); |
f3ed775e | 1443 | goto end; |
679b4943 SM |
1444 | case OPT_LIST_OPTIONS: |
1445 | list_cmd_options(stdout, long_options); | |
679b4943 | 1446 | goto end; |
ecc48a90 JD |
1447 | case OPT_LIVE_TIMER: |
1448 | { | |
1449 | unsigned long v; | |
1450 | ||
1451 | errno = 0; | |
1452 | opt_arg = poptGetOptArg(pc); | |
d73c5802 DG |
1453 | if (!opt_arg) { |
1454 | /* Set up default values. */ | |
1455 | opt_live_timer = (uint32_t) DEFAULT_LTTNG_LIVE_TIMER; | |
1456 | DBG("Session live timer interval set to default value %d", | |
1457 | opt_live_timer); | |
1458 | break; | |
1459 | } | |
1460 | ||
ecc48a90 JD |
1461 | v = strtoul(opt_arg, NULL, 0); |
1462 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
1463 | ERR("Wrong value in --live parameter: %s", opt_arg); | |
1464 | ret = CMD_ERROR; | |
1465 | goto end; | |
1466 | } | |
1467 | if (v != (uint32_t) v) { | |
1468 | ERR("32-bit overflow in --live parameter: %s", opt_arg); | |
1469 | ret = CMD_ERROR; | |
1470 | goto end; | |
1471 | } | |
0ed9e0be JG |
1472 | if (v == 0) { |
1473 | ERR("Live timer interval must be greater than zero"); | |
1474 | ret = CMD_ERROR; | |
1475 | goto end; | |
1476 | } | |
ecc48a90 JD |
1477 | opt_live_timer = (uint32_t) v; |
1478 | DBG("Session live timer interval set to %d", opt_live_timer); | |
1479 | break; | |
1480 | } | |
e51a4200 JG |
1481 | case OPT_DEFAULT_NAME: |
1482 | opt_default_name = true; | |
1483 | break; | |
f3ed775e | 1484 | default: |
f3ed775e DG |
1485 | ret = CMD_UNDEFINED; |
1486 | goto end; | |
1487 | } | |
1488 | } | |
1489 | ||
785d2d0d | 1490 | if (opt_no_consumer) { |
96fe6b8d | 1491 | MSG("The option --no-consumer is obsolete. Use --no-output now."); |
785d2d0d DG |
1492 | ret = CMD_WARNING; |
1493 | goto end; | |
1494 | } | |
1495 | ||
92360082 JG |
1496 | /* Spawn a session daemon if needed */ |
1497 | if (!opt_no_sessiond) { | |
1498 | ret = launch_sessiond(); | |
1499 | if (ret) { | |
1500 | ret = CMD_ERROR; | |
1501 | goto end; | |
1502 | } | |
1503 | } | |
1504 | ||
acc09215 | 1505 | /* MI initialization */ |
37d03ff7 JRJ |
1506 | if (lttng_opt_mi) { |
1507 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1508 | if (!writer) { | |
1509 | ret = -LTTNG_ERR_NOMEM; | |
1510 | goto end; | |
1511 | } | |
1512 | ||
1513 | /* Open command element */ | |
1514 | ret = mi_lttng_writer_command_open(writer, | |
1515 | mi_lttng_element_command_create); | |
1516 | if (ret) { | |
1517 | ret = CMD_ERROR; | |
1518 | goto end; | |
1519 | } | |
1520 | ||
1521 | /* Open output element */ | |
1522 | ret = mi_lttng_writer_open_element(writer, | |
1523 | mi_lttng_element_command_output); | |
1524 | if (ret) { | |
1525 | ret = CMD_ERROR; | |
1526 | goto end; | |
1527 | } | |
1528 | } | |
f3ed775e DG |
1529 | opt_session_name = (char*) poptGetArg(pc); |
1530 | ||
37d03ff7 | 1531 | command_ret = create_session(); |
227bc702 | 1532 | |
37d03ff7 JRJ |
1533 | if (command_ret) { |
1534 | success = 0; | |
1535 | } | |
1536 | ||
1537 | if (lttng_opt_mi) { | |
1538 | /* Close output element */ | |
1539 | ret = mi_lttng_writer_close_element(writer); | |
1540 | if (ret) { | |
1541 | ret = CMD_ERROR; | |
1542 | goto end; | |
1543 | } | |
1544 | ||
1545 | /* Success ? */ | |
1546 | ret = mi_lttng_writer_write_element_bool(writer, | |
1547 | mi_lttng_element_command_success, success); | |
1548 | if (ret) { | |
1549 | ret = CMD_ERROR; | |
1550 | goto end; | |
1551 | } | |
1552 | ||
1553 | /* Command element close */ | |
1554 | ret = mi_lttng_writer_command_close(writer); | |
1555 | if (ret) { | |
1556 | ret = CMD_ERROR; | |
1557 | goto end; | |
1558 | } | |
1559 | } | |
f3ed775e DG |
1560 | |
1561 | end: | |
37d03ff7 JRJ |
1562 | /* Mi clean-up */ |
1563 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1564 | /* Preserve original error code */ | |
1565 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
1566 | } | |
1567 | ||
acc09215 | 1568 | /* Overwrite ret if an error occurred in create_session() */ |
37d03ff7 JRJ |
1569 | ret = command_ret ? command_ret : ret; |
1570 | ||
ca1c3607 | 1571 | poptFreeContext(pc); |
f3ed775e DG |
1572 | return ret; |
1573 | } |