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 | ||
4fc83d94 PP |
51 | #ifdef LTTNG_EMBED_HELP |
52 | static const char help_msg[] = | |
53 | #include <lttng-snapshot.1.h> | |
54 | ; | |
55 | #endif | |
56 | ||
57f272ed DG |
57 | enum { |
58 | OPT_HELP = 1, | |
59 | OPT_LIST_OPTIONS, | |
60 | OPT_MAX_SIZE, | |
3c9bd23c | 61 | OPT_LIST_COMMANDS, |
57f272ed DG |
62 | }; |
63 | ||
50534d6f JRJ |
64 | static struct mi_writer *writer; |
65 | ||
57f272ed DG |
66 | static struct poptOption snapshot_opts[] = { |
67 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
68 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
69 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, | |
70 | {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0}, | |
71 | {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0}, | |
72 | {"name", 'n', POPT_ARG_STRING, &opt_output_name, 0, 0, 0}, | |
a8f307d8 | 73 | {"max-size", 'm', POPT_ARG_STRING, 0, OPT_MAX_SIZE, 0, 0}, |
57f272ed | 74 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
3c9bd23c | 75 | {"list-commands", 0, POPT_ARG_NONE, NULL, OPT_LIST_COMMANDS}, |
57f272ed DG |
76 | {0, 0, 0, 0, 0, 0, 0} |
77 | }; | |
78 | ||
79 | static struct cmd_struct actions[] = { | |
80 | { "add-output", cmd_add_output }, | |
81 | { "del-output", cmd_del_output }, | |
82 | { "list-output", cmd_list_output }, | |
83 | { "record", cmd_record }, | |
84 | { NULL, NULL } /* Array closure */ | |
85 | }; | |
86 | ||
57f272ed DG |
87 | /* |
88 | * Count and return the number of arguments in argv. | |
89 | */ | |
90 | static int count_arguments(const char **argv) | |
91 | { | |
92 | int i = 0; | |
93 | ||
94 | assert(argv); | |
95 | ||
96 | while (argv[i] != NULL) { | |
97 | i++; | |
98 | } | |
99 | ||
100 | return i; | |
101 | } | |
102 | ||
103 | /* | |
104 | * Create a snapshot output object from arguments using the given URL. | |
105 | * | |
106 | * Return a newly allocated object or NULL on error. | |
107 | */ | |
108 | static struct lttng_snapshot_output *create_output_from_args(const char *url) | |
109 | { | |
110 | int ret = 0; | |
111 | struct lttng_snapshot_output *output = NULL; | |
112 | ||
113 | output = lttng_snapshot_output_create(); | |
114 | if (!output) { | |
115 | goto error_create; | |
116 | } | |
117 | ||
118 | if (url) { | |
119 | ret = lttng_snapshot_output_set_ctrl_url(url, output); | |
120 | if (ret < 0) { | |
121 | goto error; | |
122 | } | |
123 | } else if (opt_ctrl_url) { | |
124 | ret = lttng_snapshot_output_set_ctrl_url(opt_ctrl_url, output); | |
125 | if (ret < 0) { | |
126 | goto error; | |
127 | } | |
128 | } | |
129 | ||
130 | if (opt_data_url) { | |
131 | ret = lttng_snapshot_output_set_data_url(opt_data_url, output); | |
132 | if (ret < 0) { | |
133 | goto error; | |
134 | } | |
135 | } | |
136 | ||
137 | if (opt_max_size) { | |
138 | ret = lttng_snapshot_output_set_size(opt_max_size, output); | |
139 | if (ret < 0) { | |
140 | goto error; | |
141 | } | |
142 | } | |
143 | ||
144 | if (opt_output_name) { | |
145 | ret = lttng_snapshot_output_set_name(opt_output_name, output); | |
146 | if (ret < 0) { | |
147 | goto error; | |
148 | } | |
149 | } | |
150 | ||
151 | return output; | |
152 | ||
153 | error: | |
154 | lttng_snapshot_output_destroy(output); | |
155 | error_create: | |
156 | return NULL; | |
157 | } | |
158 | ||
8e610b42 | 159 | static int list_output(void) |
50534d6f | 160 | { |
8e610b42 | 161 | int ret, output_seen = 0; |
50534d6f JRJ |
162 | struct lttng_snapshot_output *s_iter; |
163 | struct lttng_snapshot_output_list *list; | |
164 | ||
50534d6f JRJ |
165 | ret = lttng_snapshot_list_output(current_session_name, &list); |
166 | if (ret < 0) { | |
167 | goto error; | |
168 | } | |
169 | ||
8e610b42 | 170 | MSG("Snapshot output list for session %s", current_session_name); |
50534d6f | 171 | |
8e610b42 JR |
172 | if (lttng_opt_mi) { |
173 | ret = mi_lttng_snapshot_output_session_name(writer, | |
174 | current_session_name); | |
50534d6f JRJ |
175 | if (ret) { |
176 | ret = CMD_ERROR; | |
177 | goto end; | |
178 | } | |
179 | } | |
180 | ||
57f272ed | 181 | while ((s_iter = lttng_snapshot_output_list_get_next(list)) != NULL) { |
c3024823 | 182 | MSG("%s[%" PRIu32 "] %s: %s (max-size: %" PRId64 ")", indent4, |
57f272ed DG |
183 | lttng_snapshot_output_get_id(s_iter), |
184 | lttng_snapshot_output_get_name(s_iter), | |
c3024823 DG |
185 | lttng_snapshot_output_get_ctrl_url(s_iter), |
186 | lttng_snapshot_output_get_maxsize(s_iter)); | |
57f272ed | 187 | output_seen = 1; |
8e610b42 JR |
188 | if (lttng_opt_mi) { |
189 | ret = mi_lttng_snapshot_list_output(writer, s_iter); | |
190 | if (ret) { | |
191 | ret = CMD_ERROR; | |
192 | goto end; | |
193 | } | |
194 | } | |
57f272ed DG |
195 | } |
196 | ||
8e610b42 JR |
197 | if (lttng_opt_mi) { |
198 | /* Close snapshot snapshots element */ | |
199 | ret = mi_lttng_writer_close_element(writer); | |
200 | if (ret) { | |
201 | ret = CMD_ERROR; | |
202 | goto end; | |
203 | } | |
204 | ||
205 | /* Close snapshot session element */ | |
206 | ret = mi_lttng_writer_close_element(writer); | |
207 | if (ret) { | |
208 | ret = CMD_ERROR; | |
209 | } | |
210 | } | |
211 | end: | |
57f272ed DG |
212 | lttng_snapshot_output_list_destroy(list); |
213 | ||
214 | if (!output_seen) { | |
215 | MSG("%sNone", indent4); | |
216 | } | |
217 | ||
218 | error: | |
219 | return ret; | |
220 | } | |
221 | ||
222 | /* | |
223 | * Delete output by ID. | |
224 | */ | |
eb240553 | 225 | static int del_output(uint32_t id, const char *name) |
57f272ed DG |
226 | { |
227 | int ret; | |
228 | struct lttng_snapshot_output *output = NULL; | |
229 | ||
230 | output = lttng_snapshot_output_create(); | |
231 | if (!output) { | |
232 | ret = CMD_FATAL; | |
233 | goto error; | |
234 | } | |
235 | ||
eb240553 DG |
236 | if (name) { |
237 | ret = lttng_snapshot_output_set_name(name, output); | |
238 | } else if (id != UINT32_MAX) { | |
239 | ret = lttng_snapshot_output_set_id(id, output); | |
240 | } else { | |
241 | ret = CMD_ERROR; | |
242 | goto error; | |
243 | } | |
57f272ed DG |
244 | if (ret < 0) { |
245 | ret = CMD_FATAL; | |
246 | goto error; | |
247 | } | |
248 | ||
249 | ret = lttng_snapshot_del_output(current_session_name, output); | |
250 | if (ret < 0) { | |
251 | goto error; | |
252 | } | |
253 | ||
eb240553 DG |
254 | if (id != UINT32_MAX) { |
255 | MSG("Snapshot output id %" PRIu32 " successfully deleted for session %s", | |
256 | id, current_session_name); | |
257 | } else { | |
258 | MSG("Snapshot output %s successfully deleted for session %s", | |
259 | name, current_session_name); | |
260 | } | |
57f272ed | 261 | |
6546176b JR |
262 | if (lttng_opt_mi) { |
263 | ret = mi_lttng_snapshot_del_output(writer, id, name, | |
264 | current_session_name); | |
265 | if (ret) { | |
266 | ret = CMD_ERROR; | |
267 | } | |
268 | } | |
269 | ||
57f272ed DG |
270 | error: |
271 | lttng_snapshot_output_destroy(output); | |
272 | return ret; | |
273 | } | |
274 | ||
275 | /* | |
276 | * Add output from the user URL. | |
277 | */ | |
278 | static int add_output(const char *url) | |
279 | { | |
280 | int ret; | |
281 | struct lttng_snapshot_output *output = NULL; | |
6efe784e DG |
282 | char name[NAME_MAX]; |
283 | const char *n_ptr; | |
57f272ed DG |
284 | |
285 | if (!url && (!opt_data_url || !opt_ctrl_url)) { | |
286 | ret = CMD_ERROR; | |
287 | goto error; | |
288 | } | |
289 | ||
290 | output = create_output_from_args(url); | |
291 | if (!output) { | |
292 | ret = CMD_FATAL; | |
293 | goto error; | |
294 | } | |
295 | ||
296 | /* This call, if successful, populates the id of the output object. */ | |
297 | ret = lttng_snapshot_add_output(current_session_name, output); | |
298 | if (ret < 0) { | |
299 | goto error; | |
300 | } | |
301 | ||
6efe784e DG |
302 | n_ptr = lttng_snapshot_output_get_name(output); |
303 | if (*n_ptr == '\0') { | |
304 | int pret; | |
305 | pret = snprintf(name, sizeof(name), DEFAULT_SNAPSHOT_NAME "-%" PRIu32, | |
306 | lttng_snapshot_output_get_id(output)); | |
307 | if (pret < 0) { | |
308 | PERROR("snprintf add output name"); | |
309 | } | |
310 | n_ptr = name; | |
311 | } | |
312 | ||
57f272ed DG |
313 | MSG("Snapshot output successfully added for session %s", |
314 | current_session_name); | |
315 | MSG(" [%" PRIu32 "] %s: %s (max-size: %" PRId64 ")", | |
6efe784e | 316 | lttng_snapshot_output_get_id(output), n_ptr, |
57f272ed DG |
317 | lttng_snapshot_output_get_ctrl_url(output), |
318 | lttng_snapshot_output_get_maxsize(output)); | |
779f455d JR |
319 | if (lttng_opt_mi) { |
320 | ret = mi_lttng_snapshot_add_output(writer, current_session_name, | |
321 | n_ptr, output); | |
322 | if (ret) { | |
323 | ret = CMD_ERROR; | |
324 | } | |
325 | } | |
57f272ed DG |
326 | error: |
327 | lttng_snapshot_output_destroy(output); | |
328 | return ret; | |
329 | } | |
330 | ||
331 | static int cmd_add_output(int argc, const char **argv) | |
332 | { | |
50534d6f | 333 | int ret; |
57f272ed DG |
334 | |
335 | if (argc < 2 && (!opt_data_url || !opt_ctrl_url)) { | |
57f272ed DG |
336 | ret = CMD_ERROR; |
337 | goto end; | |
338 | } | |
339 | ||
779f455d | 340 | ret = add_output(argv[1]); |
57f272ed DG |
341 | |
342 | end: | |
343 | return ret; | |
344 | } | |
345 | ||
346 | static int cmd_del_output(int argc, const char **argv) | |
347 | { | |
50534d6f | 348 | int ret; |
eb240553 DG |
349 | char *name; |
350 | long id; | |
57f272ed DG |
351 | |
352 | if (argc < 2) { | |
57f272ed DG |
353 | ret = CMD_ERROR; |
354 | goto end; | |
355 | } | |
356 | ||
eb240553 DG |
357 | errno = 0; |
358 | id = strtol(argv[1], &name, 10); | |
07f50237 | 359 | if (id == 0 && (errno == 0 || errno == EINVAL)) { |
6546176b | 360 | ret = del_output(UINT32_MAX, name); |
eb240553 | 361 | } else if (errno == 0 && *name == '\0') { |
6546176b | 362 | ret = del_output(id, NULL); |
eb240553 DG |
363 | } else { |
364 | ERR("Argument %s not recognized", argv[1]); | |
365 | ret = -1; | |
366 | goto end; | |
367 | } | |
57f272ed DG |
368 | |
369 | end: | |
370 | return ret; | |
371 | } | |
372 | ||
373 | static int cmd_list_output(int argc, const char **argv) | |
374 | { | |
50534d6f JRJ |
375 | int ret; |
376 | ||
8e610b42 | 377 | ret = list_output(); |
50534d6f JRJ |
378 | |
379 | return ret; | |
380 | } | |
381 | ||
57f272ed DG |
382 | /* |
383 | * Do a snapshot record with the URL if one is given. | |
384 | */ | |
385 | static int record(const char *url) | |
386 | { | |
387 | int ret; | |
388 | struct lttng_snapshot_output *output = NULL; | |
389 | ||
e1986656 DG |
390 | output = create_output_from_args(url); |
391 | if (!output) { | |
392 | ret = CMD_FATAL; | |
393 | goto error; | |
57f272ed DG |
394 | } |
395 | ||
396 | ret = lttng_snapshot_record(current_session_name, output, 0); | |
397 | if (ret < 0) { | |
68808f4e | 398 | if (ret == -LTTNG_ERR_MAX_SIZE_INVALID) { |
d07ceecd | 399 | ERR("Invalid snapshot size. Cannot fit at least one packet per stream."); |
68808f4e | 400 | } |
57f272ed DG |
401 | goto error; |
402 | } | |
403 | ||
404 | MSG("Snapshot recorded successfully for session %s", current_session_name); | |
405 | ||
406 | if (url) { | |
407 | MSG("Snapshot written at: %s", url); | |
408 | } else if (opt_ctrl_url) { | |
409 | MSG("Snapshot written to ctrl: %s, data: %s", opt_ctrl_url, | |
410 | opt_data_url); | |
57f272ed DG |
411 | } |
412 | ||
1862dfe0 JR |
413 | if (lttng_opt_mi) { |
414 | ret = mi_lttng_snapshot_record(writer, current_session_name, url, | |
415 | opt_ctrl_url, opt_data_url); | |
416 | if (ret) { | |
417 | ret = CMD_ERROR; | |
418 | } | |
419 | } | |
420 | ||
57f272ed | 421 | error: |
cdcdb9dd | 422 | lttng_snapshot_output_destroy(output); |
57f272ed DG |
423 | return ret; |
424 | } | |
425 | ||
426 | static int cmd_record(int argc, const char **argv) | |
427 | { | |
428 | int ret; | |
429 | ||
430 | if (argc == 2) { | |
1862dfe0 | 431 | ret = record(argv[1]); |
57f272ed | 432 | } else { |
1862dfe0 | 433 | ret = record(NULL); |
57f272ed DG |
434 | } |
435 | ||
436 | return ret; | |
437 | } | |
438 | ||
3da6df22 | 439 | static enum cmd_error_code handle_command(const char **argv) |
57f272ed | 440 | { |
3da6df22 JG |
441 | int mi_ret, i = 0, argc; |
442 | enum cmd_error_code cmd_ret; | |
57f272ed DG |
443 | struct cmd_struct *cmd; |
444 | ||
3da6df22 JG |
445 | if (!argv) { |
446 | ERR("No action specified for snapshot command."); | |
447 | cmd_ret = CMD_ERROR; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | if ((!opt_ctrl_url && opt_data_url) || | |
57f272ed | 452 | (opt_ctrl_url && !opt_data_url)) { |
3da6df22 JG |
453 | ERR("URLs must be specified for both data and control"); |
454 | cmd_ret = CMD_ERROR; | |
57f272ed DG |
455 | goto end; |
456 | } | |
457 | ||
458 | argc = count_arguments(argv); | |
3da6df22 JG |
459 | /* popt should have passed NULL if no arguments are present. */ |
460 | assert(argc > 0); | |
57f272ed DG |
461 | |
462 | cmd = &actions[i]; | |
463 | while (cmd->func != NULL) { | |
464 | /* Find command */ | |
465 | if (strcmp(argv[0], cmd->name) == 0) { | |
3da6df22 JG |
466 | int result; |
467 | ||
50534d6f JRJ |
468 | if (lttng_opt_mi) { |
469 | /* Action element */ | |
3da6df22 | 470 | mi_ret = mi_lttng_writer_open_element(writer, |
50534d6f | 471 | mi_lttng_element_command_action); |
3da6df22 JG |
472 | if (mi_ret) { |
473 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
474 | goto end; |
475 | } | |
476 | ||
477 | /* Name of the action */ | |
3da6df22 | 478 | mi_ret = mi_lttng_writer_write_element_string(writer, |
50534d6f | 479 | config_element_name, argv[0]); |
3da6df22 JG |
480 | if (mi_ret) { |
481 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
482 | goto end; |
483 | } | |
484 | ||
485 | /* Open output element */ | |
3da6df22 | 486 | mi_ret = mi_lttng_writer_open_element(writer, |
50534d6f | 487 | mi_lttng_element_command_output); |
3da6df22 JG |
488 | if (mi_ret) { |
489 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
490 | goto end; |
491 | } | |
492 | } | |
493 | ||
3da6df22 JG |
494 | result = cmd->func(argc, argv); |
495 | if (result) { | |
496 | switch (-result) { | |
497 | case LTTNG_ERR_SNAPSHOT_NODATA: | |
498 | WARN("%s", lttng_strerror(result)); | |
499 | ||
500 | /* A warning is fine since the user has no control on | |
501 | * whether or not applications (or the kernel) have | |
502 | * produced any event between the start of the tracing | |
503 | * session and the recording of the snapshot. MI wise | |
504 | * the command is not a success since nothing was | |
505 | * recorded. | |
506 | */ | |
507 | cmd_ret = CMD_SUCCESS; | |
508 | break; | |
509 | default: | |
510 | ERR("%s", lttng_strerror(result)); | |
511 | cmd_ret = CMD_ERROR; | |
512 | break; | |
513 | } | |
514 | } else { | |
515 | cmd_ret = CMD_SUCCESS; | |
516 | } | |
517 | ||
50534d6f JRJ |
518 | |
519 | if (lttng_opt_mi) { | |
520 | /* Close output and action element */ | |
3da6df22 JG |
521 | mi_ret = mi_lttng_close_multi_element(writer, 2); |
522 | if (mi_ret) { | |
523 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
524 | goto end; |
525 | } | |
526 | } | |
57f272ed DG |
527 | goto end; |
528 | } | |
529 | i++; | |
530 | cmd = &actions[i]; | |
531 | } | |
532 | ||
3da6df22 | 533 | cmd_ret = CMD_UNDEFINED; |
57f272ed DG |
534 | |
535 | end: | |
3da6df22 | 536 | return cmd_ret; |
57f272ed | 537 | } |
57f272ed DG |
538 | /* |
539 | * The 'snapshot <cmd> <options>' first level command | |
540 | */ | |
541 | int cmd_snapshot(int argc, const char **argv) | |
542 | { | |
3da6df22 JG |
543 | int opt; |
544 | int mi_ret; | |
545 | enum cmd_error_code cmd_ret = CMD_SUCCESS; | |
57f272ed DG |
546 | char *session_name = NULL; |
547 | static poptContext pc; | |
548 | ||
549 | pc = poptGetContext(NULL, argc, argv, snapshot_opts, 0); | |
550 | poptReadDefaultConfig(pc, 0); | |
551 | ||
50534d6f | 552 | /* Mi check */ |
c7e35b03 | 553 | if (lttng_opt_mi) { |
50534d6f JRJ |
554 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); |
555 | if (!writer) { | |
3da6df22 | 556 | cmd_ret = CMD_ERROR; |
50534d6f JRJ |
557 | goto end; |
558 | } | |
559 | ||
560 | /* Open command element */ | |
3da6df22 | 561 | mi_ret = mi_lttng_writer_command_open(writer, |
50534d6f | 562 | mi_lttng_element_command_snapshot); |
3da6df22 JG |
563 | if (mi_ret) { |
564 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
565 | goto end; |
566 | } | |
567 | ||
568 | /* Open output element */ | |
3da6df22 | 569 | mi_ret = mi_lttng_writer_open_element(writer, |
50534d6f | 570 | mi_lttng_element_command_output); |
3da6df22 JG |
571 | if (mi_ret) { |
572 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
573 | goto end; |
574 | } | |
c7e35b03 JR |
575 | } |
576 | ||
57f272ed DG |
577 | while ((opt = poptGetNextOpt(pc)) != -1) { |
578 | switch (opt) { | |
579 | case OPT_HELP: | |
3da6df22 JG |
580 | { |
581 | int ret; | |
582 | ||
583 | /* SHOW_HELP assigns to ret. */ | |
4ba92f18 | 584 | SHOW_HELP(); |
3da6df22 | 585 | cmd_ret = ret; |
57f272ed | 586 | goto end; |
3da6df22 | 587 | } |
57f272ed DG |
588 | case OPT_LIST_OPTIONS: |
589 | list_cmd_options(stdout, snapshot_opts); | |
590 | goto end; | |
3c9bd23c SM |
591 | case OPT_LIST_COMMANDS: |
592 | list_commands(actions, stdout); | |
593 | goto end; | |
57f272ed DG |
594 | case OPT_MAX_SIZE: |
595 | { | |
a8f307d8 | 596 | uint64_t val; |
57f272ed DG |
597 | const char *opt = poptGetOptArg(pc); |
598 | ||
a8f307d8 | 599 | if (utils_parse_size_suffix((char *) opt, &val) < 0) { |
57f272ed | 600 | ERR("Unable to handle max-size value %s", opt); |
3da6df22 | 601 | cmd_ret = CMD_ERROR; |
57f272ed DG |
602 | goto end; |
603 | } | |
604 | ||
57f272ed DG |
605 | opt_max_size = val; |
606 | ||
607 | break; | |
608 | } | |
609 | default: | |
3da6df22 | 610 | cmd_ret = CMD_UNDEFINED; |
57f272ed DG |
611 | goto end; |
612 | } | |
613 | } | |
614 | ||
615 | if (!opt_session_name) { | |
616 | session_name = get_session_name(); | |
617 | if (session_name == NULL) { | |
3da6df22 | 618 | cmd_ret = CMD_ERROR; |
57f272ed DG |
619 | goto end; |
620 | } | |
621 | current_session_name = session_name; | |
622 | } else { | |
623 | current_session_name = opt_session_name; | |
624 | } | |
625 | ||
3da6df22 | 626 | cmd_ret = handle_command(poptGetArgs(pc)); |
50534d6f JRJ |
627 | |
628 | if (lttng_opt_mi) { | |
629 | /* Close output element */ | |
3da6df22 JG |
630 | mi_ret = mi_lttng_writer_close_element(writer); |
631 | if (mi_ret) { | |
632 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
633 | goto end; |
634 | } | |
635 | ||
636 | /* Success ? */ | |
3da6df22 JG |
637 | mi_ret = mi_lttng_writer_write_element_bool(writer, |
638 | mi_lttng_element_command_success, | |
639 | cmd_ret == CMD_SUCCESS); | |
640 | if (mi_ret) { | |
641 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
642 | goto end; |
643 | } | |
644 | ||
645 | /* Command element close */ | |
3da6df22 JG |
646 | mi_ret = mi_lttng_writer_command_close(writer); |
647 | if (mi_ret) { | |
648 | cmd_ret = CMD_ERROR; | |
50534d6f JRJ |
649 | goto end; |
650 | } | |
57f272ed DG |
651 | } |
652 | ||
653 | end: | |
50534d6f JRJ |
654 | /* Mi clean-up */ |
655 | if (writer && mi_lttng_writer_destroy(writer)) { | |
3da6df22 | 656 | cmd_ret = CMD_ERROR; |
50534d6f JRJ |
657 | } |
658 | ||
57f272ed DG |
659 | if (!opt_session_name) { |
660 | free(session_name); | |
661 | } | |
50534d6f | 662 | |
57f272ed | 663 | poptFreeContext(pc); |
3da6df22 | 664 | return cmd_ret; |
57f272ed | 665 | } |