Commit | Line | Data |
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57f272ed DG |
1 | /* |
2 | * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
57f272ed DG |
19 | #include <assert.h> |
20 | #include <inttypes.h> | |
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 <unistd.h> | |
50534d6f | 28 | #include <assert.h> |
57f272ed | 29 | |
a8f307d8 | 30 | #include <common/utils.h> |
50534d6f | 31 | #include <common/mi-lttng.h> |
57f272ed DG |
32 | #include <lttng/snapshot.h> |
33 | ||
34 | #include "../command.h" | |
35 | ||
36 | static const char *opt_session_name; | |
37 | static const char *opt_output_name; | |
38 | static const char *opt_data_url; | |
39 | static const char *opt_ctrl_url; | |
40 | static const char *current_session_name; | |
41 | static uint64_t opt_max_size; | |
42 | ||
43 | /* Stub for the cmd struct actions. */ | |
44 | static int cmd_add_output(int argc, const char **argv); | |
45 | static int cmd_del_output(int argc, const char **argv); | |
46 | static int cmd_list_output(int argc, const char **argv); | |
47 | static int cmd_record(int argc, const char **argv); | |
48 | ||
49 | static const char *indent4 = " "; | |
50 | ||
51 | enum { | |
52 | OPT_HELP = 1, | |
53 | OPT_LIST_OPTIONS, | |
54 | OPT_MAX_SIZE, | |
3c9bd23c | 55 | OPT_LIST_COMMANDS, |
57f272ed DG |
56 | }; |
57 | ||
50534d6f JRJ |
58 | static struct mi_writer *writer; |
59 | ||
57f272ed DG |
60 | static struct poptOption snapshot_opts[] = { |
61 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
62 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
63 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, | |
64 | {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0}, | |
65 | {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0}, | |
66 | {"name", 'n', POPT_ARG_STRING, &opt_output_name, 0, 0, 0}, | |
a8f307d8 | 67 | {"max-size", 'm', POPT_ARG_STRING, 0, OPT_MAX_SIZE, 0, 0}, |
57f272ed | 68 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
3c9bd23c | 69 | {"list-commands", 0, POPT_ARG_NONE, NULL, OPT_LIST_COMMANDS}, |
57f272ed DG |
70 | {0, 0, 0, 0, 0, 0, 0} |
71 | }; | |
72 | ||
73 | static struct cmd_struct actions[] = { | |
74 | { "add-output", cmd_add_output }, | |
75 | { "del-output", cmd_del_output }, | |
76 | { "list-output", cmd_list_output }, | |
77 | { "record", cmd_record }, | |
78 | { NULL, NULL } /* Array closure */ | |
79 | }; | |
80 | ||
57f272ed DG |
81 | /* |
82 | * Count and return the number of arguments in argv. | |
83 | */ | |
84 | static int count_arguments(const char **argv) | |
85 | { | |
86 | int i = 0; | |
87 | ||
88 | assert(argv); | |
89 | ||
90 | while (argv[i] != NULL) { | |
91 | i++; | |
92 | } | |
93 | ||
94 | return i; | |
95 | } | |
96 | ||
97 | /* | |
98 | * Create a snapshot output object from arguments using the given URL. | |
99 | * | |
100 | * Return a newly allocated object or NULL on error. | |
101 | */ | |
102 | static struct lttng_snapshot_output *create_output_from_args(const char *url) | |
103 | { | |
104 | int ret = 0; | |
105 | struct lttng_snapshot_output *output = NULL; | |
106 | ||
107 | output = lttng_snapshot_output_create(); | |
108 | if (!output) { | |
109 | goto error_create; | |
110 | } | |
111 | ||
112 | if (url) { | |
113 | ret = lttng_snapshot_output_set_ctrl_url(url, output); | |
114 | if (ret < 0) { | |
115 | goto error; | |
116 | } | |
117 | } else if (opt_ctrl_url) { | |
118 | ret = lttng_snapshot_output_set_ctrl_url(opt_ctrl_url, output); | |
119 | if (ret < 0) { | |
120 | goto error; | |
121 | } | |
122 | } | |
123 | ||
124 | if (opt_data_url) { | |
125 | ret = lttng_snapshot_output_set_data_url(opt_data_url, output); | |
126 | if (ret < 0) { | |
127 | goto error; | |
128 | } | |
129 | } | |
130 | ||
131 | if (opt_max_size) { | |
132 | ret = lttng_snapshot_output_set_size(opt_max_size, output); | |
133 | if (ret < 0) { | |
134 | goto error; | |
135 | } | |
136 | } | |
137 | ||
138 | if (opt_output_name) { | |
139 | ret = lttng_snapshot_output_set_name(opt_output_name, output); | |
140 | if (ret < 0) { | |
141 | goto error; | |
142 | } | |
143 | } | |
144 | ||
145 | return output; | |
146 | ||
147 | error: | |
148 | lttng_snapshot_output_destroy(output); | |
149 | error_create: | |
150 | return NULL; | |
151 | } | |
152 | ||
8e610b42 | 153 | static int list_output(void) |
50534d6f | 154 | { |
8e610b42 | 155 | int ret, output_seen = 0; |
50534d6f JRJ |
156 | struct lttng_snapshot_output *s_iter; |
157 | struct lttng_snapshot_output_list *list; | |
158 | ||
50534d6f JRJ |
159 | ret = lttng_snapshot_list_output(current_session_name, &list); |
160 | if (ret < 0) { | |
161 | goto error; | |
162 | } | |
163 | ||
8e610b42 | 164 | MSG("Snapshot output list for session %s", current_session_name); |
50534d6f | 165 | |
8e610b42 JR |
166 | if (lttng_opt_mi) { |
167 | ret = mi_lttng_snapshot_output_session_name(writer, | |
168 | current_session_name); | |
50534d6f JRJ |
169 | if (ret) { |
170 | ret = CMD_ERROR; | |
171 | goto end; | |
172 | } | |
173 | } | |
174 | ||
57f272ed | 175 | while ((s_iter = lttng_snapshot_output_list_get_next(list)) != NULL) { |
c3024823 | 176 | MSG("%s[%" PRIu32 "] %s: %s (max-size: %" PRId64 ")", indent4, |
57f272ed DG |
177 | lttng_snapshot_output_get_id(s_iter), |
178 | lttng_snapshot_output_get_name(s_iter), | |
c3024823 DG |
179 | lttng_snapshot_output_get_ctrl_url(s_iter), |
180 | lttng_snapshot_output_get_maxsize(s_iter)); | |
57f272ed | 181 | output_seen = 1; |
8e610b42 JR |
182 | if (lttng_opt_mi) { |
183 | ret = mi_lttng_snapshot_list_output(writer, s_iter); | |
184 | if (ret) { | |
185 | ret = CMD_ERROR; | |
186 | goto end; | |
187 | } | |
188 | } | |
57f272ed DG |
189 | } |
190 | ||
8e610b42 JR |
191 | if (lttng_opt_mi) { |
192 | /* Close snapshot snapshots element */ | |
193 | ret = mi_lttng_writer_close_element(writer); | |
194 | if (ret) { | |
195 | ret = CMD_ERROR; | |
196 | goto end; | |
197 | } | |
198 | ||
199 | /* Close snapshot session element */ | |
200 | ret = mi_lttng_writer_close_element(writer); | |
201 | if (ret) { | |
202 | ret = CMD_ERROR; | |
203 | } | |
204 | } | |
205 | end: | |
57f272ed DG |
206 | lttng_snapshot_output_list_destroy(list); |
207 | ||
208 | if (!output_seen) { | |
209 | MSG("%sNone", indent4); | |
210 | } | |
211 | ||
212 | error: | |
213 | return ret; | |
214 | } | |
215 | ||
216 | /* | |
217 | * Delete output by ID. | |
218 | */ | |
eb240553 | 219 | static int del_output(uint32_t id, const char *name) |
57f272ed DG |
220 | { |
221 | int ret; | |
222 | struct lttng_snapshot_output *output = NULL; | |
223 | ||
224 | output = lttng_snapshot_output_create(); | |
225 | if (!output) { | |
226 | ret = CMD_FATAL; | |
227 | goto error; | |
228 | } | |
229 | ||
eb240553 DG |
230 | if (name) { |
231 | ret = lttng_snapshot_output_set_name(name, output); | |
232 | } else if (id != UINT32_MAX) { | |
233 | ret = lttng_snapshot_output_set_id(id, output); | |
234 | } else { | |
235 | ret = CMD_ERROR; | |
236 | goto error; | |
237 | } | |
57f272ed DG |
238 | if (ret < 0) { |
239 | ret = CMD_FATAL; | |
240 | goto error; | |
241 | } | |
242 | ||
243 | ret = lttng_snapshot_del_output(current_session_name, output); | |
244 | if (ret < 0) { | |
245 | goto error; | |
246 | } | |
247 | ||
eb240553 DG |
248 | if (id != UINT32_MAX) { |
249 | MSG("Snapshot output id %" PRIu32 " successfully deleted for session %s", | |
250 | id, current_session_name); | |
251 | } else { | |
252 | MSG("Snapshot output %s successfully deleted for session %s", | |
253 | name, current_session_name); | |
254 | } | |
57f272ed | 255 | |
6546176b JR |
256 | if (lttng_opt_mi) { |
257 | ret = mi_lttng_snapshot_del_output(writer, id, name, | |
258 | current_session_name); | |
259 | if (ret) { | |
260 | ret = CMD_ERROR; | |
261 | } | |
262 | } | |
263 | ||
57f272ed DG |
264 | error: |
265 | lttng_snapshot_output_destroy(output); | |
266 | return ret; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Add output from the user URL. | |
271 | */ | |
272 | static int add_output(const char *url) | |
273 | { | |
274 | int ret; | |
275 | struct lttng_snapshot_output *output = NULL; | |
6efe784e DG |
276 | char name[NAME_MAX]; |
277 | const char *n_ptr; | |
57f272ed DG |
278 | |
279 | if (!url && (!opt_data_url || !opt_ctrl_url)) { | |
280 | ret = CMD_ERROR; | |
281 | goto error; | |
282 | } | |
283 | ||
284 | output = create_output_from_args(url); | |
285 | if (!output) { | |
286 | ret = CMD_FATAL; | |
287 | goto error; | |
288 | } | |
289 | ||
290 | /* This call, if successful, populates the id of the output object. */ | |
291 | ret = lttng_snapshot_add_output(current_session_name, output); | |
292 | if (ret < 0) { | |
293 | goto error; | |
294 | } | |
295 | ||
6efe784e DG |
296 | n_ptr = lttng_snapshot_output_get_name(output); |
297 | if (*n_ptr == '\0') { | |
298 | int pret; | |
299 | pret = snprintf(name, sizeof(name), DEFAULT_SNAPSHOT_NAME "-%" PRIu32, | |
300 | lttng_snapshot_output_get_id(output)); | |
301 | if (pret < 0) { | |
302 | PERROR("snprintf add output name"); | |
303 | } | |
304 | n_ptr = name; | |
305 | } | |
306 | ||
57f272ed DG |
307 | MSG("Snapshot output successfully added for session %s", |
308 | current_session_name); | |
309 | MSG(" [%" PRIu32 "] %s: %s (max-size: %" PRId64 ")", | |
6efe784e | 310 | lttng_snapshot_output_get_id(output), n_ptr, |
57f272ed DG |
311 | lttng_snapshot_output_get_ctrl_url(output), |
312 | lttng_snapshot_output_get_maxsize(output)); | |
779f455d JR |
313 | if (lttng_opt_mi) { |
314 | ret = mi_lttng_snapshot_add_output(writer, current_session_name, | |
315 | n_ptr, output); | |
316 | if (ret) { | |
317 | ret = CMD_ERROR; | |
318 | } | |
319 | } | |
57f272ed DG |
320 | error: |
321 | lttng_snapshot_output_destroy(output); | |
322 | return ret; | |
323 | } | |
324 | ||
325 | static int cmd_add_output(int argc, const char **argv) | |
326 | { | |
50534d6f | 327 | int ret; |
57f272ed DG |
328 | |
329 | if (argc < 2 && (!opt_data_url || !opt_ctrl_url)) { | |
57f272ed DG |
330 | ret = CMD_ERROR; |
331 | goto end; | |
332 | } | |
333 | ||
779f455d | 334 | ret = add_output(argv[1]); |
57f272ed DG |
335 | |
336 | end: | |
337 | return ret; | |
338 | } | |
339 | ||
340 | static int cmd_del_output(int argc, const char **argv) | |
341 | { | |
50534d6f | 342 | int ret; |
eb240553 DG |
343 | char *name; |
344 | long id; | |
57f272ed DG |
345 | |
346 | if (argc < 2) { | |
57f272ed DG |
347 | ret = CMD_ERROR; |
348 | goto end; | |
349 | } | |
350 | ||
eb240553 DG |
351 | errno = 0; |
352 | id = strtol(argv[1], &name, 10); | |
07f50237 | 353 | if (id == 0 && (errno == 0 || errno == EINVAL)) { |
6546176b | 354 | ret = del_output(UINT32_MAX, name); |
eb240553 | 355 | } else if (errno == 0 && *name == '\0') { |
6546176b | 356 | ret = del_output(id, NULL); |
eb240553 DG |
357 | } else { |
358 | ERR("Argument %s not recognized", argv[1]); | |
359 | ret = -1; | |
360 | goto end; | |
361 | } | |
57f272ed DG |
362 | |
363 | end: | |
364 | return ret; | |
365 | } | |
366 | ||
367 | static int cmd_list_output(int argc, const char **argv) | |
368 | { | |
50534d6f JRJ |
369 | int ret; |
370 | ||
8e610b42 | 371 | ret = list_output(); |
50534d6f JRJ |
372 | |
373 | return ret; | |
374 | } | |
375 | ||
57f272ed DG |
376 | /* |
377 | * Do a snapshot record with the URL if one is given. | |
378 | */ | |
379 | static int record(const char *url) | |
380 | { | |
381 | int ret; | |
382 | struct lttng_snapshot_output *output = NULL; | |
383 | ||
e1986656 DG |
384 | output = create_output_from_args(url); |
385 | if (!output) { | |
386 | ret = CMD_FATAL; | |
387 | goto error; | |
57f272ed DG |
388 | } |
389 | ||
390 | ret = lttng_snapshot_record(current_session_name, output, 0); | |
391 | if (ret < 0) { | |
68808f4e | 392 | if (ret == -LTTNG_ERR_MAX_SIZE_INVALID) { |
d07ceecd | 393 | ERR("Invalid snapshot size. Cannot fit at least one packet per stream."); |
68808f4e | 394 | } |
57f272ed DG |
395 | goto error; |
396 | } | |
397 | ||
398 | MSG("Snapshot recorded successfully for session %s", current_session_name); | |
399 | ||
400 | if (url) { | |
401 | MSG("Snapshot written at: %s", url); | |
402 | } else if (opt_ctrl_url) { | |
403 | MSG("Snapshot written to ctrl: %s, data: %s", opt_ctrl_url, | |
404 | opt_data_url); | |
57f272ed DG |
405 | } |
406 | ||
1862dfe0 JR |
407 | if (lttng_opt_mi) { |
408 | ret = mi_lttng_snapshot_record(writer, current_session_name, url, | |
409 | opt_ctrl_url, opt_data_url); | |
410 | if (ret) { | |
411 | ret = CMD_ERROR; | |
412 | } | |
413 | } | |
414 | ||
57f272ed | 415 | error: |
cdcdb9dd | 416 | lttng_snapshot_output_destroy(output); |
57f272ed DG |
417 | return ret; |
418 | } | |
419 | ||
420 | static int cmd_record(int argc, const char **argv) | |
421 | { | |
422 | int ret; | |
423 | ||
424 | if (argc == 2) { | |
1862dfe0 | 425 | ret = record(argv[1]); |
57f272ed | 426 | } else { |
1862dfe0 | 427 | ret = record(NULL); |
57f272ed DG |
428 | } |
429 | ||
430 | return ret; | |
431 | } | |
432 | ||
433 | static int handle_command(const char **argv) | |
434 | { | |
50534d6f | 435 | int ret = CMD_SUCCESS, i = 0, argc, command_ret = CMD_SUCCESS; |
57f272ed DG |
436 | struct cmd_struct *cmd; |
437 | ||
438 | if (argv == NULL || (!opt_ctrl_url && opt_data_url) || | |
439 | (opt_ctrl_url && !opt_data_url)) { | |
50534d6f | 440 | command_ret = CMD_ERROR; |
57f272ed DG |
441 | goto end; |
442 | } | |
443 | ||
444 | argc = count_arguments(argv); | |
445 | ||
446 | cmd = &actions[i]; | |
447 | while (cmd->func != NULL) { | |
448 | /* Find command */ | |
449 | if (strcmp(argv[0], cmd->name) == 0) { | |
50534d6f JRJ |
450 | if (lttng_opt_mi) { |
451 | /* Action element */ | |
452 | ret = mi_lttng_writer_open_element(writer, | |
453 | mi_lttng_element_command_action); | |
454 | if (ret) { | |
455 | ret = CMD_ERROR; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | /* Name of the action */ | |
460 | ret = mi_lttng_writer_write_element_string(writer, | |
461 | config_element_name, argv[0]); | |
462 | if (ret) { | |
463 | ret = CMD_ERROR; | |
464 | goto end; | |
465 | } | |
466 | ||
467 | /* Open output element */ | |
468 | ret = mi_lttng_writer_open_element(writer, | |
469 | mi_lttng_element_command_output); | |
470 | if (ret) { | |
471 | ret = CMD_ERROR; | |
472 | goto end; | |
473 | } | |
474 | } | |
475 | ||
476 | command_ret = cmd->func(argc, argv); | |
477 | ||
478 | if (lttng_opt_mi) { | |
479 | /* Close output and action element */ | |
480 | ret = mi_lttng_close_multi_element(writer, 2); | |
481 | if (ret) { | |
482 | ret = CMD_ERROR; | |
483 | goto end; | |
484 | } | |
485 | } | |
57f272ed DG |
486 | goto end; |
487 | } | |
488 | i++; | |
489 | cmd = &actions[i]; | |
490 | } | |
491 | ||
1ec06ed3 | 492 | ret = CMD_UNDEFINED; |
57f272ed DG |
493 | |
494 | end: | |
1ec06ed3 | 495 | /* Overwrite ret if an error occurred in cmd->func() */ |
50534d6f | 496 | ret = command_ret ? command_ret : ret; |
57f272ed DG |
497 | return ret; |
498 | } | |
57f272ed DG |
499 | /* |
500 | * The 'snapshot <cmd> <options>' first level command | |
501 | */ | |
502 | int cmd_snapshot(int argc, const char **argv) | |
503 | { | |
50534d6f | 504 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
57f272ed DG |
505 | char *session_name = NULL; |
506 | static poptContext pc; | |
507 | ||
508 | pc = poptGetContext(NULL, argc, argv, snapshot_opts, 0); | |
509 | poptReadDefaultConfig(pc, 0); | |
510 | ||
50534d6f | 511 | /* Mi check */ |
c7e35b03 | 512 | if (lttng_opt_mi) { |
50534d6f JRJ |
513 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); |
514 | if (!writer) { | |
515 | ret = -LTTNG_ERR_NOMEM; | |
516 | goto end; | |
517 | } | |
518 | ||
519 | /* Open command element */ | |
520 | ret = mi_lttng_writer_command_open(writer, | |
521 | mi_lttng_element_command_snapshot); | |
522 | if (ret) { | |
523 | ret = CMD_ERROR; | |
524 | goto end; | |
525 | } | |
526 | ||
527 | /* Open output element */ | |
528 | ret = mi_lttng_writer_open_element(writer, | |
529 | mi_lttng_element_command_output); | |
530 | if (ret) { | |
531 | ret = CMD_ERROR; | |
532 | goto end; | |
533 | } | |
c7e35b03 JR |
534 | } |
535 | ||
57f272ed DG |
536 | while ((opt = poptGetNextOpt(pc)) != -1) { |
537 | switch (opt) { | |
538 | case OPT_HELP: | |
4ba92f18 | 539 | SHOW_HELP(); |
57f272ed DG |
540 | goto end; |
541 | case OPT_LIST_OPTIONS: | |
542 | list_cmd_options(stdout, snapshot_opts); | |
543 | goto end; | |
3c9bd23c SM |
544 | case OPT_LIST_COMMANDS: |
545 | list_commands(actions, stdout); | |
546 | goto end; | |
57f272ed DG |
547 | case OPT_MAX_SIZE: |
548 | { | |
a8f307d8 | 549 | uint64_t val; |
57f272ed DG |
550 | const char *opt = poptGetOptArg(pc); |
551 | ||
a8f307d8 | 552 | if (utils_parse_size_suffix((char *) opt, &val) < 0) { |
57f272ed DG |
553 | ERR("Unable to handle max-size value %s", opt); |
554 | ret = CMD_ERROR; | |
555 | goto end; | |
556 | } | |
557 | ||
57f272ed DG |
558 | opt_max_size = val; |
559 | ||
560 | break; | |
561 | } | |
562 | default: | |
57f272ed DG |
563 | ret = CMD_UNDEFINED; |
564 | goto end; | |
565 | } | |
566 | } | |
567 | ||
568 | if (!opt_session_name) { | |
569 | session_name = get_session_name(); | |
570 | if (session_name == NULL) { | |
571 | ret = CMD_ERROR; | |
572 | goto end; | |
573 | } | |
574 | current_session_name = session_name; | |
575 | } else { | |
576 | current_session_name = opt_session_name; | |
577 | } | |
578 | ||
50534d6f | 579 | command_ret = handle_command(poptGetArgs(pc)); |
1ec06ed3 | 580 | if (command_ret) { |
50534d6f | 581 | switch (-command_ret) { |
7badf927 | 582 | case LTTNG_ERR_SNAPSHOT_NODATA: |
50534d6f | 583 | WARN("%s", lttng_strerror(command_ret)); |
dad01b0a JR |
584 | |
585 | /* A warning is fine since the user has no control on | |
586 | * whether or not applications (or the kernel) have | |
587 | * produced any event between the start of the tracing | |
588 | * session and the recording of the snapshot. MI wise | |
589 | * the command is not a success since nothing was | |
590 | * recorded. | |
591 | */ | |
592 | command_ret = 0; | |
7badf927 DG |
593 | break; |
594 | default: | |
50534d6f | 595 | ERR("%s", lttng_strerror(command_ret)); |
7badf927 | 596 | break; |
6dc3064a | 597 | } |
50534d6f JRJ |
598 | success = 0; |
599 | } | |
600 | ||
601 | if (lttng_opt_mi) { | |
602 | /* Close output element */ | |
603 | ret = mi_lttng_writer_close_element(writer); | |
604 | if (ret) { | |
605 | ret = CMD_ERROR; | |
606 | goto end; | |
607 | } | |
608 | ||
609 | /* Success ? */ | |
610 | ret = mi_lttng_writer_write_element_bool(writer, | |
611 | mi_lttng_element_command_success, success); | |
612 | if (ret) { | |
613 | ret = CMD_ERROR; | |
614 | goto end; | |
615 | } | |
616 | ||
617 | /* Command element close */ | |
618 | ret = mi_lttng_writer_command_close(writer); | |
619 | if (ret) { | |
620 | ret = CMD_ERROR; | |
621 | goto end; | |
622 | } | |
57f272ed DG |
623 | } |
624 | ||
625 | end: | |
50534d6f JRJ |
626 | /* Mi clean-up */ |
627 | if (writer && mi_lttng_writer_destroy(writer)) { | |
628 | /* Preserve original error code */ | |
629 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
630 | } | |
631 | ||
57f272ed DG |
632 | if (!opt_session_name) { |
633 | free(session_name); | |
634 | } | |
50534d6f | 635 | |
83f4233d | 636 | /* Overwrite ret if an error occurred during handle_command */ |
50534d6f | 637 | ret = command_ret ? command_ret : ret; |
57f272ed DG |
638 | poptFreeContext(pc); |
639 | return ret; | |
640 | } |