Commit | Line | Data |
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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 |
42 | static char *opt_output_path; |
43 | static char *opt_session_name; | |
a4b92340 DG |
44 | static char *opt_url; |
45 | static char *opt_ctrl_url; | |
46 | static char *opt_data_url; | |
d7ba1388 | 47 | static char *opt_shm_path; |
a4b92340 | 48 | static int opt_no_consumer; |
96fe6b8d | 49 | static int opt_no_output; |
16f6f820 | 50 | static int opt_snapshot; |
ecc48a90 | 51 | static unsigned int opt_live_timer; |
f3ed775e DG |
52 | |
53 | enum { | |
54 | OPT_HELP = 1, | |
679b4943 | 55 | OPT_LIST_OPTIONS, |
ecc48a90 | 56 | OPT_LIVE_TIMER, |
f3ed775e DG |
57 | }; |
58 | ||
37d03ff7 JRJ |
59 | static struct mi_writer *writer; |
60 | ||
f3ed775e DG |
61 | static 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 | 81 | extern 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 | */ | |
87 | static 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 | */ |
162 | static 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 | ||
202 | error: | |
203 | free(sessions); | |
204 | end: | |
205 | return ret; | |
206 | } | |
207 | ||
00e2e675 | 208 | /* |
a4b92340 | 209 | * For a session name, set the consumer URLs. |
00e2e675 | 210 | */ |
a4b92340 DG |
211 | static 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 | ||
246 | error: | |
247 | lttng_destroy_handle(handle); | |
248 | return ret; | |
249 | } | |
250 | ||
16f6f820 DG |
251 | static 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 | ||
285 | error: | |
286 | lttng_snapshot_output_destroy(output); | |
287 | error_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 | 297 | static 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 | ||
542 | error: | |
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 | */ |
558 | int 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 | |
677 | end: | |
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 | } |