Fix 'daemon' typo in lttng-ctl-pc.in description
[lttng-tools.git] / src / bin / lttng / commands / create.c
CommitLineData
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
18#define _GNU_SOURCE
6c1c0768 19#define _LGPL_SOURCE
a4b92340 20#include <assert.h>
ecc48a90 21#include <ctype.h>
f3ed775e
DG
22#include <popt.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <sys/stat.h>
27#include <sys/types.h>
28#include <time.h>
29#include <unistd.h>
30
37d03ff7
JRJ
31#include <common/mi-lttng.h>
32
c399183f 33#include "../command.h"
679b4943 34#include "../utils.h"
f3ed775e 35
00e2e675 36#include <common/defaults.h>
42224349 37#include <common/sessiond-comm/sessiond-comm.h>
00e2e675 38#include <common/uri.h>
81b86775 39#include <common/utils.h>
16f6f820 40#include <lttng/snapshot.h>
42224349 41
f3ed775e
DG
42static char *opt_output_path;
43static char *opt_session_name;
a4b92340
DG
44static char *opt_url;
45static char *opt_ctrl_url;
46static char *opt_data_url;
d7ba1388 47static char *opt_shm_path;
a4b92340 48static int opt_no_consumer;
96fe6b8d 49static int opt_no_output;
16f6f820 50static int opt_snapshot;
ecc48a90 51static unsigned int opt_live_timer;
f3ed775e
DG
52
53enum {
54 OPT_HELP = 1,
679b4943 55 OPT_LIST_OPTIONS,
ecc48a90 56 OPT_LIVE_TIMER,
f3ed775e
DG
57};
58
37d03ff7
JRJ
59static struct mi_writer *writer;
60
f3ed775e
DG
61static struct poptOption long_options[] = {
62 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
679b4943
SM
63 {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
64 {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL},
65 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
23d14dff
DG
66 {"set-url", 'U', POPT_ARG_STRING, &opt_url, 0, 0, 0},
67 {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0},
68 {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0},
96fe6b8d 69 {"no-output", 0, POPT_ARG_VAL, &opt_no_output, 1, 0, 0},
2bba9e53 70 {"no-consumer", 0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0},
16f6f820 71 {"snapshot", 0, POPT_ARG_VAL, &opt_snapshot, 1, 0, 0},
d73c5802 72 {"live", 0, POPT_ARG_INT | POPT_ARGFLAG_OPTIONAL, 0, OPT_LIVE_TIMER, 0, 0},
d7ba1388 73 {"shm-path", 0, POPT_ARG_STRING, &opt_shm_path, 0, 0, 0},
f3ed775e
DG
74 {0, 0, 0, 0, 0, 0, 0}
75};
76
16de1a24
DG
77/*
78 * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on
79 * why this declaration exists and used ONLY in for this command.
80 */
07424f16 81extern int _lttng_create_session_ext(const char *name, const char *url,
ecc48a90 82 const char *datetime, int live_timer);
07424f16 83
f3ed775e
DG
84/*
85 * usage
86 */
87static void usage(FILE *ofp)
88{
a4b92340 89 fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n");
f3ed775e 90 fprintf(ofp, "\n");
a4b92340
DG
91 fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\n");
92 fprintf(ofp, "\n");
93 fprintf(ofp, "Options:\n");
f3ed775e 94 fprintf(ofp, " -h, --help Show this help\n");
1c8d13c8 95 fprintf(ofp, " --list-options Simple listing of options\n");
58a97671 96 fprintf(ofp, " -o, --output PATH Specify output path for traces\n");
96fe6b8d 97 fprintf(ofp, " --no-output Traces will not be outputted\n");
a2d6893b 98 fprintf(ofp, " --snapshot Set the session in snapshot mode.\n");
96fe6b8d 99 fprintf(ofp, " Created in no-output mode and uses the URL,\n");
16f6f820
DG
100 fprintf(ofp, " if one, as the default snapshot output.\n");
101 fprintf(ofp, " Every channel will be set in overwrite mode\n");
102 fprintf(ofp, " and with mmap output (splice not supported).\n");
d73c5802 103 fprintf(ofp, " --live [USEC] Set the session in live-reading mode.\n");
ecc48a90
JD
104 fprintf(ofp, " The delay parameter in micro-seconds is the\n");
105 fprintf(ofp, " maximum time the user can wait for the data\n");
d73c5802
DG
106 fprintf(ofp, " to be flushed. Can be set with a network\n");
107 fprintf(ofp, " URL (-U or -C/-D) and must have a relayd listening.\n");
108 fprintf(ofp, " By default, %u is used for the timer and the\n",
109 DEFAULT_LTTNG_LIVE_TIMER);
110 fprintf(ofp, " network URL is set to net://127.0.0.1.\n");
d7ba1388
MD
111 fprintf(ofp, " --shm-path PATH Path where shared memory holding buffers\n");
112 fprintf(ofp, " should be created. Useful when used with pramfs\n");
113 fprintf(ofp, " to extract trace data after crash.\n");
a4b92340
DG
114 fprintf(ofp, "\n");
115 fprintf(ofp, "Extended Options:\n");
116 fprintf(ofp, "\n");
117 fprintf(ofp, "Using these options, each API call can be controlled individually.\n");
118 fprintf(ofp, "\n");
119 fprintf(ofp, " -U, --set-url=URL Set URL destination of the trace data.\n");
00e2e675 120 fprintf(ofp, " It is persistent for the session lifetime.\n");
a4b92340 121 fprintf(ofp, " This will set both data and control URL.\n");
a4b92340
DG
122 fprintf(ofp, " -C, --ctrl-url=URL Set control path URL. (Must use -D also)\n");
123 fprintf(ofp, " -D, --data-url=URL Set data path URL. (Must use -C also)\n");
a4b92340
DG
124 fprintf(ofp, "\n");
125 fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n");
126 fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n");
127 fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n");
128 fprintf(ofp, "\n");
129 fprintf(ofp, "URL format is has followed:\n");
130 fprintf(ofp, "\n");
131 fprintf(ofp, " proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]\n");
132 fprintf(ofp, "\n");
133 fprintf(ofp, " Supported protocols are (proto):\n");
134 fprintf(ofp, " > file://...\n");
135 fprintf(ofp, " Local filesystem full path.\n");
136 fprintf(ofp, "\n");
16de1a24 137 fprintf(ofp, " > net[6]://...\n");
a4b92340
DG
138 fprintf(ofp, " This will use the default network transport layer which is\n");
139 fprintf(ofp, " TCP for both control (PORT1) and data port (PORT2).\n");
140 fprintf(ofp, " The default ports are respectively 5342 and 5343.\n");
141 fprintf(ofp, "\n");
0ab61906 142 fprintf(ofp, " > tcp[6]://...\n");
a4b92340
DG
143 fprintf(ofp, " Can only be used with -C and -D together\n");
144 fprintf(ofp, "\n");
145 fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n");
146 fprintf(ofp, "\n");
147 fprintf(ofp, "Examples:\n");
148 fprintf(ofp, " # lttng create -U net://192.168.1.42\n");
149 fprintf(ofp, " Uses TCP and default ports for the given destination.\n");
150 fprintf(ofp, " # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n");
151 fprintf(ofp, " Uses TCP, default ports and IPv6.\n");
152 fprintf(ofp, " # lttng create s1 -U net://myhost.com:3229\n");
153 fprintf(ofp, " Set the consumer to the remote HOST on port 3229 for control.\n");
f3ed775e
DG
154 fprintf(ofp, "\n");
155}
156
37d03ff7 157/*
485ca16f 158 * Retrieve the created session and mi output it based on provided argument
37d03ff7
JRJ
159 * This is currently a summary of what was pretty printed and is subject to
160 * enhancements.
37d03ff7
JRJ
161 */
162static int mi_created_session(const char *session_name)
163{
164 int ret, i, count, found;
165 struct lttng_session *sessions;
166
167 /* session_name should not be null */
168 assert(session_name);
169 assert(writer);
170
171 count = lttng_list_sessions(&sessions);
172 if (count < 0) {
173 ret = count;
174 ERR("%s", lttng_strerror(ret));
175 goto error;
176 }
177
178 if (count == 0) {
179 ERR("Error session creation failed: session %s not found", session_name);
180 ret = -LTTNG_ERR_SESS_NOT_FOUND;
181 goto end;
182 }
183
184 found = 0;
185 for (i = 0; i < count; i++) {
186 if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
187 found = 1;
188 ret = mi_lttng_session(writer, &sessions[i], 0);
189 if (ret) {
190 goto error;
191 }
192 break;
193 }
194 }
195
196 if (!found) {
197 ret = -LTTNG_ERR_SESS_NOT_FOUND;
198 } else {
199 ret = CMD_SUCCESS;
200 }
201
202error:
203 free(sessions);
204end:
205 return ret;
206}
207
00e2e675 208/*
a4b92340 209 * For a session name, set the consumer URLs.
00e2e675 210 */
a4b92340
DG
211static int set_consumer_url(const char *session_name, const char *ctrl_url,
212 const char *data_url)
00e2e675 213{
a4b92340
DG
214 int ret;
215 struct lttng_handle *handle;
216 struct lttng_domain dom;
217
218 assert(session_name);
219
220 /*
221 * Set handle with the session name and the domain set to 0. This means to
222 * the session daemon that the next action applies on the tracing session
223 * rather then the domain specific session.
224 */
225 memset(&dom, 0, sizeof(dom));
226
227 handle = lttng_create_handle(session_name, &dom);
228 if (handle == NULL) {
229 ret = CMD_FATAL;
230 goto error;
231 }
00e2e675 232
a4b92340
DG
233 ret = lttng_set_consumer_url(handle, ctrl_url, data_url);
234 if (ret < 0) {
235 goto error;
00e2e675
DG
236 }
237
a4b92340
DG
238 if (ctrl_url) {
239 MSG("Control URL %s set for session %s", ctrl_url, session_name);
00e2e675
DG
240 }
241
a4b92340
DG
242 if (data_url) {
243 MSG("Data URL %s set for session %s", data_url, session_name);
244 }
245
246error:
247 lttng_destroy_handle(handle);
248 return ret;
249}
250
16f6f820
DG
251static int add_snapshot_output(const char *session_name, const char *ctrl_url,
252 const char *data_url)
253{
254 int ret;
255 struct lttng_snapshot_output *output = NULL;
256
257 assert(session_name);
258
259 output = lttng_snapshot_output_create();
260 if (!output) {
261 ret = CMD_FATAL;
262 goto error_create;
263 }
264
265 if (ctrl_url) {
266 ret = lttng_snapshot_output_set_ctrl_url(ctrl_url, output);
267 if (ret < 0) {
268 goto error;
269 }
270 }
271
272 if (data_url) {
273 ret = lttng_snapshot_output_set_data_url(data_url, output);
274 if (ret < 0) {
275 goto error;
276 }
277 }
278
279 /* This call, if successful, populates the id of the output object. */
280 ret = lttng_snapshot_add_output(session_name, output);
281 if (ret < 0) {
282 goto error;
283 }
284
285error:
286 lttng_snapshot_output_destroy(output);
287error_create:
288 return ret;
289}
290
f3ed775e 291/*
1c8d13c8
TD
292 * Create a tracing session.
293 * If no name is specified, a default name is generated.
f3ed775e 294 *
1c8d13c8 295 * Returns one of the CMD_* result constants.
f3ed775e 296 */
a4b92340 297static int create_session(void)
f3ed775e 298{
a4b92340 299 int ret;
07424f16 300 char *session_name = NULL, *traces_path = NULL, *alloc_path = NULL;
a4b92340 301 char *alloc_url = NULL, *url = NULL, datetime[16];
487b253b 302 char session_name_date[NAME_MAX + 17], *print_str_url = NULL;
f3ed775e
DG
303 time_t rawtime;
304 struct tm *timeinfo;
d7ba1388 305 char shm_path[PATH_MAX] = "";
f3ed775e 306
d6175221
DG
307 /* Get date and time for automatic session name/path */
308 time(&rawtime);
309 timeinfo = localtime(&rawtime);
310 strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);
311
f3ed775e
DG
312 /* Auto session name creation */
313 if (opt_session_name == NULL) {
07424f16
DG
314 ret = snprintf(session_name_date, sizeof(session_name_date),
315 DEFAULT_SESSION_NAME "-%s", datetime);
d6175221 316 if (ret < 0) {
07424f16
DG
317 PERROR("snprintf session name");
318 goto error;
319 }
04965770 320 session_name = session_name_date;
07424f16 321 DBG("Auto session name set to %s", session_name_date);
f3ed775e 322 } else {
487b253b
DG
323 if (strlen(opt_session_name) > NAME_MAX) {
324 ERR("Session name too long. Length must be lower or equal to %d",
325 NAME_MAX);
326 ret = LTTNG_ERR_SESSION_FAIL;
327 goto error;
328 }
4b861950
DG
329 /*
330 * Check if the session name begins with "auto-" or is exactly "auto".
331 * Both are reserved for the default session name. See bug #449 to
332 * understand why we need to check both here.
333 */
334 if ((strncmp(opt_session_name, DEFAULT_SESSION_NAME "-",
335 strlen(DEFAULT_SESSION_NAME) + 1) == 0) ||
336 (strncmp(opt_session_name, DEFAULT_SESSION_NAME,
61b35a5a 337 strlen(DEFAULT_SESSION_NAME)) == 0 &&
4b861950 338 strlen(opt_session_name) == strlen(DEFAULT_SESSION_NAME))) {
61b35a5a
DG
339 ERR("%s is a reserved keyword for default session(s)",
340 DEFAULT_SESSION_NAME);
341 ret = CMD_ERROR;
342 goto error;
343 }
f3ed775e 344 session_name = opt_session_name;
07424f16
DG
345 ret = snprintf(session_name_date, sizeof(session_name_date),
346 "%s-%s", session_name, datetime);
347 if (ret < 0) {
348 PERROR("snprintf session name");
349 goto error;
350 }
f3ed775e
DG
351 }
352
1a241656
DG
353 if ((!opt_ctrl_url && opt_data_url) || (opt_ctrl_url && !opt_data_url)) {
354 ERR("You need both control and data URL.");
355 ret = CMD_ERROR;
356 goto error;
357 }
358
785d2d0d 359 if (opt_output_path != NULL) {
81b86775 360 traces_path = utils_expand_path(opt_output_path);
00e2e675
DG
361 if (traces_path == NULL) {
362 ret = CMD_ERROR;
363 goto error;
364 }
365
37d03ff7 366 /* Create URL string from the local file system path */
a4b92340 367 ret = asprintf(&alloc_url, "file://%s", traces_path);
00e2e675 368 if (ret < 0) {
a4b92340 369 PERROR("asprintf url path");
00e2e675
DG
370 ret = CMD_FATAL;
371 goto error;
372 }
a4b92340
DG
373 /* URL to use in the lttng_create_session() call */
374 url = alloc_url;
40b03f52 375 print_str_url = traces_path;
a4b92340
DG
376 } else if (opt_url) { /* Handling URL (-U opt) */
377 url = opt_url;
40b03f52 378 print_str_url = url;
1a241656
DG
379 } else if (opt_data_url && opt_ctrl_url) {
380 /*
381 * With both control and data, we'll be setting the consumer URL after
382 * session creation thus use no URL.
383 */
384 url = NULL;
2bba9e53 385 } else if (!opt_no_output) {
ab2e5c7c
MD
386 char *tmp_path;
387
00e2e675 388 /* Auto output path */
ab2e5c7c
MD
389 tmp_path = utils_get_home_dir();
390 if (tmp_path == NULL) {
d386b234 391 ERR("HOME path not found.\n \
00e2e675 392 Please specify an output path using -o, --output PATH");
f3ed775e
DG
393 ret = CMD_FATAL;
394 goto error;
395 }
ab2e5c7c
MD
396 alloc_path = strdup(tmp_path);
397 if (!alloc_path) {
398 PERROR("allocating alloc_path");
399 ret = CMD_FATAL;
400 goto error;
401 }
07424f16
DG
402 ret = asprintf(&alloc_url,
403 "file://%s/" DEFAULT_TRACE_DIR_NAME "/%s",
404 alloc_path, session_name_date);
58a97671 405 if (ret < 0) {
00e2e675
DG
406 PERROR("asprintf trace dir name");
407 ret = CMD_FATAL;
58a97671
DG
408 goto error;
409 }
00e2e675 410
a4b92340 411 url = alloc_url;
1a241656 412 print_str_url = alloc_url + strlen("file://");
2bba9e53 413 } else {
96fe6b8d 414 /* No output means --no-output or --snapshot mode. */
2bba9e53 415 url = NULL;
00e2e675
DG
416 }
417
1a241656 418 /* Use default live URL if NO url is/are found. */
ecc48a90 419 if ((opt_live_timer && !opt_url) && (opt_live_timer && !opt_data_url)) {
d73c5802
DG
420 ret = asprintf(&alloc_url, "net://127.0.0.1");
421 if (ret < 0) {
422 PERROR("asprintf default live URL");
423 ret = CMD_FATAL;
424 goto error;
425 }
426 url = alloc_url;
427 print_str_url = url;
ecc48a90
JD
428 }
429
430 if (opt_snapshot && opt_live_timer) {
431 ERR("Snapshot and live modes are mutually exclusive.");
432 ret = CMD_ERROR;
433 goto error;
434 }
435
16f6f820
DG
436 if (opt_snapshot) {
437 /* No output by default. */
438 const char *snapshot_url = NULL;
439
440 if (opt_url) {
441 snapshot_url = url;
442 } else if (!opt_data_url && !opt_ctrl_url) {
443 /* This is the session path that we need to use as output. */
444 snapshot_url = url;
445 }
446 ret = lttng_create_session_snapshot(session_name, snapshot_url);
ecc48a90 447 } else if (opt_live_timer) {
8960e9cd
DG
448 const char *pathname;
449
450 if (opt_relayd_path) {
451 pathname = opt_relayd_path;
452 } else {
453 pathname = INSTALL_BIN_PATH "/lttng-relayd";
454 }
2c521c63
DG
455 if (!opt_url && !opt_data_url && !check_relayd() &&
456 spawn_relayd(pathname, 0) < 0) {
8960e9cd
DG
457 goto error;
458 }
ecc48a90 459 ret = lttng_create_session_live(session_name, url, opt_live_timer);
16f6f820 460 } else {
ecc48a90 461 ret = _lttng_create_session_ext(session_name, url, datetime, -1);
16f6f820 462 }
f3ed775e 463 if (ret < 0) {
ae856491 464 /* Don't set ret so lttng can interpret the sessiond error. */
42224349 465 switch (-ret) {
f73fabfd 466 case LTTNG_ERR_EXIST_SESS:
42224349
DG
467 WARN("Session %s already exists", session_name);
468 break;
60e835ca 469 default:
60e835ca 470 break;
42224349 471 }
f3ed775e
DG
472 goto error;
473 }
474
0ab61906 475 if (opt_ctrl_url && opt_data_url) {
16f6f820
DG
476 if (opt_snapshot) {
477 ret = add_snapshot_output(session_name, opt_ctrl_url,
478 opt_data_url);
479 } else {
480 /* Setting up control URI (-C or/and -D opt) */
481 ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url);
482 }
a4b92340 483 if (ret < 0) {
4f50c803
DG
484 /* Destroy created session because the URL are not valid. */
485 lttng_destroy_session(session_name);
a4b92340
DG
486 goto error;
487 }
4f50c803
DG
488 }
489
d7ba1388
MD
490 if (opt_shm_path) {
491 ret = snprintf(shm_path, sizeof(shm_path),
492 "%s/%s", opt_shm_path, session_name_date);
493 if (ret < 0) {
494 PERROR("snprintf shm_path");
495 goto error;
496 }
497
498 ret = lttng_set_session_shm_path(session_name, shm_path);
499 if (ret < 0) {
500 lttng_destroy_session(session_name);
501 goto error;
502 }
503 }
504
4f50c803 505 MSG("Session %s created.", session_name);
16f6f820 506 if (print_str_url && !opt_snapshot) {
4f50c803 507 MSG("Traces will be written in %s", print_str_url);
d73c5802
DG
508
509 if (opt_live_timer) {
510 MSG("Live timer set to %u usec", opt_live_timer);
511 }
16f6f820
DG
512 } else if (opt_snapshot) {
513 if (print_str_url) {
514 MSG("Default snapshot output set to: %s", print_str_url);
515 }
516 MSG("Snapshot mode set. Every channel enabled for that session will "
1daafe0d 517 "be set in overwrite mode and mmap output.");
a4b92340 518 }
d7ba1388
MD
519 if (opt_shm_path) {
520 MSG("Session %s set to shm_path: %s.", session_name,
521 shm_path);
522 }
a4b92340 523
37d03ff7
JRJ
524 /* Mi output */
525 if (lttng_opt_mi) {
526 ret = mi_created_session(session_name);
527 if (ret) {
528 ret = CMD_ERROR;
529 goto error;
530 }
531 }
532
58a97671
DG
533 /* Init lttng session config */
534 ret = config_init(session_name);
f3ed775e 535 if (ret < 0) {
27089920 536 ret = CMD_ERROR;
f3ed775e
DG
537 goto error;
538 }
539
f3ed775e
DG
540 ret = CMD_SUCCESS;
541
542error:
0e428499
DG
543 free(alloc_url);
544 free(traces_path);
87f222b6 545 free(alloc_path);
a4b92340
DG
546
547 if (ret < 0) {
548 ERR("%s", lttng_strerror(ret));
549 }
f3ed775e
DG
550 return ret;
551}
552
553/*
74cc1d0f 554 * The 'create <options>' first level command
1c8d13c8
TD
555 *
556 * Returns one of the CMD_* result constants.
f3ed775e
DG
557 */
558int cmd_create(int argc, const char **argv)
559{
37d03ff7 560 int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
ecc48a90 561 char *opt_arg = NULL;
f3ed775e
DG
562 static poptContext pc;
563
564 pc = poptGetContext(NULL, argc, argv, long_options, 0);
565 poptReadDefaultConfig(pc, 0);
566
567 while ((opt = poptGetNextOpt(pc)) != -1) {
568 switch (opt) {
569 case OPT_HELP:
27089920 570 usage(stdout);
f3ed775e 571 goto end;
679b4943
SM
572 case OPT_LIST_OPTIONS:
573 list_cmd_options(stdout, long_options);
679b4943 574 goto end;
ecc48a90
JD
575 case OPT_LIVE_TIMER:
576 {
577 unsigned long v;
578
579 errno = 0;
580 opt_arg = poptGetOptArg(pc);
d73c5802
DG
581 if (!opt_arg) {
582 /* Set up default values. */
583 opt_live_timer = (uint32_t) DEFAULT_LTTNG_LIVE_TIMER;
584 DBG("Session live timer interval set to default value %d",
585 opt_live_timer);
586 break;
587 }
588
ecc48a90
JD
589 v = strtoul(opt_arg, NULL, 0);
590 if (errno != 0 || !isdigit(opt_arg[0])) {
591 ERR("Wrong value in --live parameter: %s", opt_arg);
592 ret = CMD_ERROR;
593 goto end;
594 }
595 if (v != (uint32_t) v) {
596 ERR("32-bit overflow in --live parameter: %s", opt_arg);
597 ret = CMD_ERROR;
598 goto end;
599 }
0ed9e0be
JG
600 if (v == 0) {
601 ERR("Live timer interval must be greater than zero");
602 ret = CMD_ERROR;
603 goto end;
604 }
ecc48a90
JD
605 opt_live_timer = (uint32_t) v;
606 DBG("Session live timer interval set to %d", opt_live_timer);
607 break;
608 }
f3ed775e
DG
609 default:
610 usage(stderr);
611 ret = CMD_UNDEFINED;
612 goto end;
613 }
614 }
615
785d2d0d 616 if (opt_no_consumer) {
96fe6b8d 617 MSG("The option --no-consumer is obsolete. Use --no-output now.");
785d2d0d
DG
618 ret = CMD_WARNING;
619 goto end;
620 }
621
acc09215 622 /* MI initialization */
37d03ff7
JRJ
623 if (lttng_opt_mi) {
624 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
625 if (!writer) {
626 ret = -LTTNG_ERR_NOMEM;
627 goto end;
628 }
629
630 /* Open command element */
631 ret = mi_lttng_writer_command_open(writer,
632 mi_lttng_element_command_create);
633 if (ret) {
634 ret = CMD_ERROR;
635 goto end;
636 }
637
638 /* Open output element */
639 ret = mi_lttng_writer_open_element(writer,
640 mi_lttng_element_command_output);
641 if (ret) {
642 ret = CMD_ERROR;
643 goto end;
644 }
645 }
f3ed775e
DG
646 opt_session_name = (char*) poptGetArg(pc);
647
37d03ff7
JRJ
648 command_ret = create_session();
649 if (command_ret) {
650 success = 0;
651 }
652
653 if (lttng_opt_mi) {
654 /* Close output element */
655 ret = mi_lttng_writer_close_element(writer);
656 if (ret) {
657 ret = CMD_ERROR;
658 goto end;
659 }
660
661 /* Success ? */
662 ret = mi_lttng_writer_write_element_bool(writer,
663 mi_lttng_element_command_success, success);
664 if (ret) {
665 ret = CMD_ERROR;
666 goto end;
667 }
668
669 /* Command element close */
670 ret = mi_lttng_writer_command_close(writer);
671 if (ret) {
672 ret = CMD_ERROR;
673 goto end;
674 }
675 }
f3ed775e
DG
676
677end:
37d03ff7
JRJ
678 /* Mi clean-up */
679 if (writer && mi_lttng_writer_destroy(writer)) {
680 /* Preserve original error code */
681 ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL;
682 }
683
acc09215 684 /* Overwrite ret if an error occurred in create_session() */
37d03ff7
JRJ
685 ret = command_ret ? command_ret : ret;
686
ca1c3607 687 poptFreeContext(pc);
f3ed775e
DG
688 return ret;
689}
This page took 0.116851 seconds and 4 git commands to generate.