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 | |
9f19cc17 | 19 | #include <inttypes.h> |
f3ed775e DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
7a3d1328 | 24 | #include <assert.h> |
f3ed775e | 25 | |
c399183f | 26 | #include "../command.h" |
f3ed775e | 27 | |
9f19cc17 DG |
28 | static int opt_userspace; |
29 | static int opt_kernel; | |
30 | static char *opt_channel; | |
31 | static int opt_domain; | |
f37d259d | 32 | static int opt_fields; |
d78d6610 DG |
33 | #if 0 |
34 | /* Not implemented yet */ | |
35 | static char *opt_cmd_name; | |
36 | static pid_t opt_pid; | |
37 | #endif | |
9f19cc17 DG |
38 | |
39 | const char *indent4 = " "; | |
40 | const char *indent6 = " "; | |
41 | const char *indent8 = " "; | |
f3ed775e DG |
42 | |
43 | enum { | |
44 | OPT_HELP = 1, | |
eeac7d46 | 45 | OPT_USERSPACE, |
679b4943 | 46 | OPT_LIST_OPTIONS, |
f3ed775e DG |
47 | }; |
48 | ||
cd80958d DG |
49 | static struct lttng_handle *handle; |
50 | ||
f3ed775e DG |
51 | static struct poptOption long_options[] = { |
52 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
53 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
9f19cc17 | 54 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 DG |
55 | #if 0 |
56 | /* Not implemented yet */ | |
57 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, | |
58 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, | |
59 | #else | |
60 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
61 | #endif | |
9f19cc17 DG |
62 | {"channel", 'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0}, |
63 | {"domain", 'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0}, | |
f37d259d | 64 | {"fields", 'f', POPT_ARG_VAL, &opt_fields, 1, 0, 0}, |
679b4943 | 65 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
66 | {0, 0, 0, 0, 0, 0, 0} |
67 | }; | |
68 | ||
69 | /* | |
70 | * usage | |
71 | */ | |
72 | static void usage(FILE *ofp) | |
73 | { | |
27221701 | 74 | fprintf(ofp, "usage: lttng list [OPTIONS] [SESSION [<OPTIONS>]]\n"); |
9f19cc17 DG |
75 | fprintf(ofp, "\n"); |
76 | fprintf(ofp, "With no arguments, list available tracing session(s)\n"); | |
77 | fprintf(ofp, "\n"); | |
27221701 DG |
78 | fprintf(ofp, "Without a session, -k lists available kernel events\n"); |
79 | fprintf(ofp, "Without a session, -u lists available userspace events\n"); | |
9f19cc17 DG |
80 | fprintf(ofp, "\n"); |
81 | fprintf(ofp, " -h, --help Show this help\n"); | |
27221701 | 82 | fprintf(ofp, " --list-options Simple listing of options\n"); |
9f19cc17 DG |
83 | fprintf(ofp, " -k, --kernel Select kernel domain\n"); |
84 | fprintf(ofp, " -u, --userspace Select user-space domain.\n"); | |
f37d259d | 85 | fprintf(ofp, " -f, --fields List event fields.\n"); |
d78d6610 | 86 | #if 0 |
9f19cc17 | 87 | fprintf(ofp, " -p, --pid PID List user-space events by PID\n"); |
d78d6610 | 88 | #endif |
f3ed775e | 89 | fprintf(ofp, "\n"); |
27221701 | 90 | fprintf(ofp, "Session Options:\n"); |
9f19cc17 DG |
91 | fprintf(ofp, " -c, --channel NAME List details of a channel\n"); |
92 | fprintf(ofp, " -d, --domain List available domain(s)\n"); | |
f3ed775e DG |
93 | fprintf(ofp, "\n"); |
94 | } | |
95 | ||
96 | /* | |
9f19cc17 | 97 | * Get command line from /proc for a specific pid. |
f3ed775e | 98 | * |
9f19cc17 DG |
99 | * On success, return an allocated string pointer to the proc cmdline. |
100 | * On error, return NULL. | |
f3ed775e DG |
101 | */ |
102 | static char *get_cmdline_by_pid(pid_t pid) | |
103 | { | |
104 | int ret; | |
105 | FILE *fp; | |
106 | char *cmdline = NULL; | |
107 | char path[24]; /* Can't go bigger than /proc/65535/cmdline */ | |
108 | ||
109 | snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); | |
110 | fp = fopen(path, "r"); | |
111 | if (fp == NULL) { | |
112 | goto end; | |
113 | } | |
114 | ||
115 | /* Caller must free() *cmdline */ | |
116 | cmdline = malloc(PATH_MAX); | |
117 | ret = fread(cmdline, 1, PATH_MAX, fp); | |
f40799e8 DG |
118 | if (ret < 0) { |
119 | perror("fread proc list"); | |
120 | } | |
f3ed775e DG |
121 | fclose(fp); |
122 | ||
123 | end: | |
124 | return cmdline; | |
125 | } | |
b551a063 | 126 | |
464dd62d MD |
127 | static |
128 | const char *active_string(int value) | |
129 | { | |
130 | switch (value) { | |
b09f0429 MD |
131 | case 0: return " [inactive]"; |
132 | case 1: return " [active]"; | |
464dd62d MD |
133 | case -1: return ""; |
134 | default: return NULL; | |
135 | } | |
136 | } | |
137 | ||
138 | static | |
139 | const char *enabled_string(int value) | |
140 | { | |
141 | switch (value) { | |
b09f0429 MD |
142 | case 0: return " [disabled]"; |
143 | case 1: return " [enabled]"; | |
464dd62d MD |
144 | case -1: return ""; |
145 | default: return NULL; | |
146 | } | |
147 | } | |
148 | ||
fceb65df MD |
149 | static |
150 | const char *filter_string(int value) | |
151 | { | |
152 | switch (value) { | |
153 | case 1: return " [with filter]"; | |
154 | default: return ""; | |
155 | } | |
156 | } | |
157 | ||
8005f29a MD |
158 | static const char *loglevel_string(int value) |
159 | { | |
160 | switch (value) { | |
255a5dab MD |
161 | case -1: |
162 | return ""; | |
163 | case LTTNG_LOGLEVEL_EMERG: | |
164 | return "TRACE_EMERG"; | |
165 | case LTTNG_LOGLEVEL_ALERT: | |
166 | return "TRACE_ALERT"; | |
167 | case LTTNG_LOGLEVEL_CRIT: | |
168 | return "TRACE_CRIT"; | |
169 | case LTTNG_LOGLEVEL_ERR: | |
170 | return "TRACE_ERR"; | |
171 | case LTTNG_LOGLEVEL_WARNING: | |
172 | return "TRACE_WARNING"; | |
173 | case LTTNG_LOGLEVEL_NOTICE: | |
174 | return "TRACE_NOTICE"; | |
175 | case LTTNG_LOGLEVEL_INFO: | |
176 | return "TRACE_INFO"; | |
177 | case LTTNG_LOGLEVEL_DEBUG_SYSTEM: | |
178 | return "TRACE_DEBUG_SYSTEM"; | |
179 | case LTTNG_LOGLEVEL_DEBUG_PROGRAM: | |
180 | return "TRACE_DEBUG_PROGRAM"; | |
181 | case LTTNG_LOGLEVEL_DEBUG_PROCESS: | |
182 | return "TRACE_DEBUG_PROCESS"; | |
183 | case LTTNG_LOGLEVEL_DEBUG_MODULE: | |
184 | return "TRACE_DEBUG_MODULE"; | |
185 | case LTTNG_LOGLEVEL_DEBUG_UNIT: | |
186 | return "TRACE_DEBUG_UNIT"; | |
187 | case LTTNG_LOGLEVEL_DEBUG_FUNCTION: | |
188 | return "TRACE_DEBUG_FUNCTION"; | |
189 | case LTTNG_LOGLEVEL_DEBUG_LINE: | |
190 | return "TRACE_DEBUG_LINE"; | |
191 | case LTTNG_LOGLEVEL_DEBUG: | |
192 | return "TRACE_DEBUG"; | |
193 | default: | |
194 | return "<<UNKNOWN>>"; | |
8005f29a MD |
195 | } |
196 | } | |
197 | ||
b551a063 DG |
198 | /* |
199 | * Pretty print single event. | |
200 | */ | |
201 | static void print_events(struct lttng_event *event) | |
202 | { | |
203 | switch (event->type) { | |
204 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e | 205 | { |
8b703175 | 206 | if (event->loglevel != -1) { |
fceb65df | 207 | MSG("%s%s (loglevel: %s (%d)) (type: tracepoint)%s%s", |
8b703175 | 208 | indent6, |
81afa345 | 209 | event->name, |
8005f29a | 210 | loglevel_string(event->loglevel), |
8b703175 | 211 | event->loglevel, |
fceb65df MD |
212 | enabled_string(event->enabled), |
213 | filter_string(event->filter)); | |
8b703175 | 214 | } else { |
fceb65df | 215 | MSG("%s%s (type: tracepoint)%s%s", |
8b703175 MD |
216 | indent6, |
217 | event->name, | |
fceb65df MD |
218 | enabled_string(event->enabled), |
219 | filter_string(event->filter)); | |
8b703175 | 220 | } |
b551a063 | 221 | break; |
e4baff1e | 222 | } |
1896972b DG |
223 | case LTTNG_EVENT_FUNCTION: |
224 | MSG("%s%s (type: function)%s%s", indent6, | |
225 | event->name, enabled_string(event->enabled), | |
226 | filter_string(event->filter)); | |
227 | if (event->attr.probe.addr != 0) { | |
228 | MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr); | |
229 | } else { | |
230 | MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset); | |
231 | MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name); | |
232 | } | |
233 | break; | |
b551a063 | 234 | case LTTNG_EVENT_PROBE: |
fceb65df MD |
235 | MSG("%s%s (type: probe)%s%s", indent6, |
236 | event->name, enabled_string(event->enabled), | |
237 | filter_string(event->filter)); | |
b551a063 DG |
238 | if (event->attr.probe.addr != 0) { |
239 | MSG("%saddr: 0x%" PRIx64, indent8, event->attr.probe.addr); | |
240 | } else { | |
241 | MSG("%soffset: 0x%" PRIx64, indent8, event->attr.probe.offset); | |
242 | MSG("%ssymbol: %s", indent8, event->attr.probe.symbol_name); | |
243 | } | |
244 | break; | |
b551a063 | 245 | case LTTNG_EVENT_FUNCTION_ENTRY: |
fceb65df MD |
246 | MSG("%s%s (type: function)%s%s", indent6, |
247 | event->name, enabled_string(event->enabled), | |
248 | filter_string(event->filter)); | |
b551a063 DG |
249 | MSG("%ssymbol: \"%s\"", indent8, event->attr.ftrace.symbol_name); |
250 | break; | |
251 | case LTTNG_EVENT_SYSCALL: | |
fceb65df MD |
252 | MSG("%ssyscalls (type: syscall)%s%s", indent6, |
253 | enabled_string(event->enabled), | |
254 | filter_string(event->filter)); | |
b551a063 DG |
255 | break; |
256 | case LTTNG_EVENT_NOOP: | |
fceb65df MD |
257 | MSG("%s (type: noop)%s%s", indent6, |
258 | enabled_string(event->enabled), | |
259 | filter_string(event->filter)); | |
b551a063 DG |
260 | break; |
261 | case LTTNG_EVENT_ALL: | |
262 | /* We should never have "all" events in list. */ | |
263 | assert(0); | |
264 | break; | |
265 | } | |
266 | } | |
267 | ||
f37d259d MD |
268 | static const char *field_type(struct lttng_event_field *field) |
269 | { | |
270 | switch(field->type) { | |
271 | case LTTNG_EVENT_FIELD_INTEGER: | |
272 | return "integer"; | |
273 | case LTTNG_EVENT_FIELD_ENUM: | |
274 | return "enum"; | |
275 | case LTTNG_EVENT_FIELD_FLOAT: | |
276 | return "float"; | |
277 | case LTTNG_EVENT_FIELD_STRING: | |
278 | return "string"; | |
279 | case LTTNG_EVENT_FIELD_OTHER: | |
280 | default: /* fall-through */ | |
281 | return "unknown"; | |
282 | } | |
283 | } | |
284 | ||
285 | /* | |
286 | * Pretty print single event fields. | |
287 | */ | |
288 | static void print_event_field(struct lttng_event_field *field) | |
289 | { | |
290 | if (!field->field_name[0]) { | |
291 | return; | |
292 | } | |
d8fbe2a9 | 293 | MSG("%sfield: %s (%s)%s", indent8, field->field_name, |
45a32634 | 294 | field_type(field), field->nowrite ? " [no write]" : ""); |
f37d259d MD |
295 | } |
296 | ||
b551a063 DG |
297 | /* |
298 | * Ask session daemon for all user space tracepoints available. | |
299 | */ | |
300 | static int list_ust_events(void) | |
301 | { | |
302 | int i, size; | |
303 | struct lttng_domain domain; | |
304 | struct lttng_handle *handle; | |
305 | struct lttng_event *event_list; | |
306 | pid_t cur_pid = 0; | |
ea5cbc00 | 307 | char *cmdline = NULL; |
b551a063 | 308 | |
441c16a7 MD |
309 | memset(&domain, 0, sizeof(domain)); |
310 | ||
b551a063 DG |
311 | DBG("Getting UST tracing events"); |
312 | ||
313 | domain.type = LTTNG_DOMAIN_UST; | |
314 | ||
315 | handle = lttng_create_handle(NULL, &domain); | |
316 | if (handle == NULL) { | |
317 | goto error; | |
318 | } | |
319 | ||
320 | size = lttng_list_tracepoints(handle, &event_list); | |
321 | if (size < 0) { | |
60e835ca | 322 | ERR("Unable to list UST events: %s", lttng_strerror(size)); |
ef021732 | 323 | lttng_destroy_handle(handle); |
b551a063 DG |
324 | return size; |
325 | } | |
326 | ||
327 | MSG("UST events:\n-------------"); | |
328 | ||
329 | if (size == 0) { | |
330 | MSG("None"); | |
331 | } | |
332 | ||
333 | for (i = 0; i < size; i++) { | |
334 | if (cur_pid != event_list[i].pid) { | |
335 | cur_pid = event_list[i].pid; | |
ea5cbc00 CB |
336 | cmdline = get_cmdline_by_pid(cur_pid); |
337 | MSG("\nPID: %d - Name: %s", cur_pid, cmdline); | |
338 | free(cmdline); | |
b551a063 DG |
339 | } |
340 | print_events(&event_list[i]); | |
341 | } | |
342 | ||
343 | MSG(""); | |
344 | ||
345 | free(event_list); | |
ef021732 | 346 | lttng_destroy_handle(handle); |
b551a063 DG |
347 | |
348 | return CMD_SUCCESS; | |
349 | ||
350 | error: | |
ef021732 | 351 | lttng_destroy_handle(handle); |
b551a063 DG |
352 | return -1; |
353 | } | |
f3ed775e | 354 | |
f37d259d MD |
355 | /* |
356 | * Ask session daemon for all user space tracepoint fields available. | |
357 | */ | |
358 | static int list_ust_event_fields(void) | |
359 | { | |
360 | int i, size; | |
361 | struct lttng_domain domain; | |
362 | struct lttng_handle *handle; | |
363 | struct lttng_event_field *event_field_list; | |
364 | pid_t cur_pid = 0; | |
ea5cbc00 CB |
365 | char *cmdline = NULL; |
366 | ||
f37d259d MD |
367 | struct lttng_event cur_event; |
368 | ||
369 | memset(&domain, 0, sizeof(domain)); | |
370 | memset(&cur_event, 0, sizeof(cur_event)); | |
371 | ||
372 | DBG("Getting UST tracing event fields"); | |
373 | ||
374 | domain.type = LTTNG_DOMAIN_UST; | |
375 | ||
376 | handle = lttng_create_handle(NULL, &domain); | |
377 | if (handle == NULL) { | |
378 | goto error; | |
379 | } | |
380 | ||
381 | size = lttng_list_tracepoint_fields(handle, &event_field_list); | |
382 | if (size < 0) { | |
60e835ca | 383 | ERR("Unable to list UST event fields: %s", lttng_strerror(size)); |
f37d259d MD |
384 | lttng_destroy_handle(handle); |
385 | return size; | |
386 | } | |
387 | ||
388 | MSG("UST events:\n-------------"); | |
389 | ||
390 | if (size == 0) { | |
391 | MSG("None"); | |
392 | } | |
393 | ||
394 | for (i = 0; i < size; i++) { | |
395 | if (cur_pid != event_field_list[i].event.pid) { | |
396 | cur_pid = event_field_list[i].event.pid; | |
ea5cbc00 CB |
397 | cmdline = get_cmdline_by_pid(cur_pid); |
398 | MSG("\nPID: %d - Name: %s", cur_pid, cmdline); | |
399 | free(cmdline); | |
f37d259d MD |
400 | } |
401 | if (strcmp(cur_event.name, event_field_list[i].event.name) != 0) { | |
402 | print_events(&event_field_list[i].event); | |
403 | memcpy(&cur_event, &event_field_list[i].event, | |
404 | sizeof(cur_event)); | |
405 | } | |
406 | print_event_field(&event_field_list[i]); | |
407 | } | |
408 | ||
409 | MSG(""); | |
410 | ||
411 | free(event_field_list); | |
412 | lttng_destroy_handle(handle); | |
413 | ||
414 | return CMD_SUCCESS; | |
415 | ||
416 | error: | |
417 | lttng_destroy_handle(handle); | |
418 | return -1; | |
419 | } | |
420 | ||
f3ed775e | 421 | /* |
9f19cc17 | 422 | * Ask for all trace events in the kernel and pretty print them. |
f3ed775e | 423 | */ |
9f19cc17 | 424 | static int list_kernel_events(void) |
f3ed775e | 425 | { |
9f19cc17 | 426 | int i, size; |
b551a063 DG |
427 | struct lttng_domain domain; |
428 | struct lttng_handle *handle; | |
9f19cc17 | 429 | struct lttng_event *event_list; |
f3ed775e | 430 | |
441c16a7 MD |
431 | memset(&domain, 0, sizeof(domain)); |
432 | ||
b551a063 DG |
433 | DBG("Getting kernel tracing events"); |
434 | ||
435 | domain.type = LTTNG_DOMAIN_KERNEL; | |
436 | ||
437 | handle = lttng_create_handle(NULL, &domain); | |
438 | if (handle == NULL) { | |
439 | goto error; | |
440 | } | |
f3ed775e | 441 | |
cd80958d | 442 | size = lttng_list_tracepoints(handle, &event_list); |
9f19cc17 | 443 | if (size < 0) { |
60e835ca | 444 | ERR("Unable to list kernel events: %s", lttng_strerror(size)); |
ef021732 | 445 | lttng_destroy_handle(handle); |
9f19cc17 | 446 | return size; |
f3ed775e DG |
447 | } |
448 | ||
9f19cc17 | 449 | MSG("Kernel events:\n-------------"); |
f3ed775e | 450 | |
9f19cc17 | 451 | for (i = 0; i < size; i++) { |
b551a063 | 452 | print_events(&event_list[i]); |
f3ed775e DG |
453 | } |
454 | ||
b551a063 DG |
455 | MSG(""); |
456 | ||
f3ed775e DG |
457 | free(event_list); |
458 | ||
ef021732 | 459 | lttng_destroy_handle(handle); |
f3ed775e | 460 | return CMD_SUCCESS; |
b551a063 DG |
461 | |
462 | error: | |
ef021732 | 463 | lttng_destroy_handle(handle); |
b551a063 | 464 | return -1; |
f3ed775e DG |
465 | } |
466 | ||
467 | /* | |
9f19cc17 | 468 | * List events of channel of session and domain. |
f3ed775e | 469 | */ |
cd80958d | 470 | static int list_events(const char *channel_name) |
f3ed775e DG |
471 | { |
472 | int ret, count, i; | |
9f19cc17 | 473 | struct lttng_event *events = NULL; |
f3ed775e | 474 | |
cd80958d | 475 | count = lttng_list_events(handle, channel_name, &events); |
f3ed775e DG |
476 | if (count < 0) { |
477 | ret = count; | |
60e835ca | 478 | ERR("%s", lttng_strerror(ret)); |
f3ed775e DG |
479 | goto error; |
480 | } | |
481 | ||
9f19cc17 DG |
482 | MSG("\n%sEvents:", indent4); |
483 | if (count == 0) { | |
5edd7e09 | 484 | MSG("%sNone\n", indent6); |
9f19cc17 DG |
485 | goto end; |
486 | } | |
487 | ||
f3ed775e | 488 | for (i = 0; i < count; i++) { |
b551a063 | 489 | print_events(&events[i]); |
f3ed775e DG |
490 | } |
491 | ||
9f19cc17 | 492 | MSG(""); |
f3ed775e | 493 | |
9f19cc17 | 494 | end: |
0e428499 | 495 | free(events); |
9f19cc17 | 496 | ret = CMD_SUCCESS; |
f3ed775e DG |
497 | |
498 | error: | |
499 | return ret; | |
500 | } | |
501 | ||
502 | /* | |
9f19cc17 DG |
503 | * Pretty print channel |
504 | */ | |
505 | static void print_channel(struct lttng_channel *channel) | |
506 | { | |
464dd62d | 507 | MSG("- %s:%s\n", channel->name, enabled_string(channel->enabled)); |
9f19cc17 DG |
508 | |
509 | MSG("%sAttributes:", indent4); | |
a5bbe8f6 DG |
510 | MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite); |
511 | MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size); | |
9f19cc17 | 512 | MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf); |
a5bbe8f6 DG |
513 | MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval); |
514 | MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval); | |
9f19cc17 DG |
515 | switch (channel->attr.output) { |
516 | case LTTNG_EVENT_SPLICE: | |
517 | MSG("%soutput: splice()", indent6); | |
518 | break; | |
519 | case LTTNG_EVENT_MMAP: | |
520 | MSG("%soutput: mmap()", indent6); | |
521 | break; | |
522 | } | |
523 | } | |
524 | ||
525 | /* | |
526 | * List channel(s) of session and domain. | |
f3ed775e | 527 | * |
9f19cc17 | 528 | * If channel_name is NULL, all channels are listed. |
f3ed775e | 529 | */ |
cd80958d | 530 | static int list_channels(const char *channel_name) |
f3ed775e | 531 | { |
9f19cc17 DG |
532 | int count, i, ret = CMD_SUCCESS; |
533 | unsigned int chan_found = 0; | |
534 | struct lttng_channel *channels = NULL; | |
f3ed775e | 535 | |
3e25cb20 | 536 | DBG("Listing channel(s) (%s)", channel_name ? : "<all>"); |
9f19cc17 | 537 | |
cd80958d | 538 | count = lttng_list_channels(handle, &channels); |
f3ed775e | 539 | if (count < 0) { |
c7d620a2 DG |
540 | switch (-count) { |
541 | case LTTNG_ERR_KERN_CHAN_NOT_FOUND: | |
542 | ret = CMD_SUCCESS; | |
543 | WARN("No kernel channel"); | |
544 | break; | |
545 | default: | |
546 | /* We had a real error */ | |
547 | ret = count; | |
548 | ERR("%s", lttng_strerror(ret)); | |
60e835ca | 549 | break; |
c7d620a2 | 550 | } |
ae856491 | 551 | goto error_channels; |
f3ed775e DG |
552 | } |
553 | ||
9f19cc17 DG |
554 | if (channel_name == NULL) { |
555 | MSG("Channels:\n-------------"); | |
556 | } | |
557 | ||
558 | for (i = 0; i < count; i++) { | |
559 | if (channel_name != NULL) { | |
560 | if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) { | |
561 | chan_found = 1; | |
562 | } else { | |
563 | continue; | |
564 | } | |
565 | } | |
566 | print_channel(&channels[i]); | |
567 | ||
568 | /* Listing events per channel */ | |
cd80958d | 569 | ret = list_events(channels[i].name); |
9f19cc17 | 570 | if (ret < 0) { |
60e835ca | 571 | ERR("%s", lttng_strerror(ret)); |
9f19cc17 DG |
572 | } |
573 | ||
574 | if (chan_found) { | |
575 | break; | |
f3ed775e | 576 | } |
f3ed775e DG |
577 | } |
578 | ||
9f19cc17 | 579 | if (!chan_found && channel_name != NULL) { |
ae856491 DG |
580 | ERR("Channel %s not found", channel_name); |
581 | goto error; | |
9f19cc17 | 582 | } |
f3ed775e | 583 | |
9f19cc17 | 584 | ret = CMD_SUCCESS; |
f3ed775e DG |
585 | |
586 | error: | |
ae856491 DG |
587 | free(channels); |
588 | ||
589 | error_channels: | |
f3ed775e DG |
590 | return ret; |
591 | } | |
592 | ||
593 | /* | |
9f19cc17 | 594 | * List available tracing session. List only basic information. |
f3ed775e | 595 | * |
9f19cc17 | 596 | * If session_name is NULL, all sessions are listed. |
f3ed775e | 597 | */ |
9f19cc17 | 598 | static int list_sessions(const char *session_name) |
f3ed775e | 599 | { |
9f19cc17 DG |
600 | int ret, count, i; |
601 | unsigned int session_found = 0; | |
602 | struct lttng_session *sessions; | |
603 | ||
604 | count = lttng_list_sessions(&sessions); | |
605 | DBG("Session count %d", count); | |
606 | if (count < 0) { | |
607 | ret = count; | |
8f3f773f | 608 | ERR("%s", lttng_strerror(ret)); |
9f19cc17 | 609 | goto error; |
d32fb093 DG |
610 | } else if (count == 0) { |
611 | MSG("Currently no available tracing session"); | |
612 | goto end; | |
9f19cc17 DG |
613 | } |
614 | ||
615 | if (session_name == NULL) { | |
616 | MSG("Available tracing sessions:"); | |
617 | } | |
618 | ||
619 | for (i = 0; i < count; i++) { | |
620 | if (session_name != NULL) { | |
621 | if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { | |
622 | session_found = 1; | |
464dd62d | 623 | MSG("Tracing session %s:%s", session_name, active_string(sessions[i].enabled)); |
9f19cc17 DG |
624 | MSG("%sTrace path: %s\n", indent4, sessions[i].path); |
625 | break; | |
626 | } | |
3842aa86 MD |
627 | } else { |
628 | MSG(" %d) %s (%s)%s", i + 1, sessions[i].name, sessions[i].path, | |
629 | active_string(sessions[i].enabled)); | |
9f19cc17 DG |
630 | } |
631 | } | |
632 | ||
633 | free(sessions); | |
634 | ||
635 | if (!session_found && session_name != NULL) { | |
b6913340 DG |
636 | ERR("Session '%s' not found", session_name); |
637 | ret = CMD_ERROR; | |
638 | goto error; | |
9f19cc17 DG |
639 | } |
640 | ||
641 | if (session_name == NULL) { | |
6e0de39b | 642 | MSG("\nUse lttng list <session_name> for more details"); |
9f19cc17 | 643 | } |
f3ed775e | 644 | |
d32fb093 | 645 | end: |
f3ed775e DG |
646 | return CMD_SUCCESS; |
647 | ||
648 | error: | |
649 | return ret; | |
650 | } | |
f3ed775e DG |
651 | |
652 | /* | |
9f19cc17 | 653 | * List available domain(s) for a session. |
f3ed775e | 654 | */ |
330be774 | 655 | static int list_domains(const char *session_name) |
f3ed775e | 656 | { |
9f19cc17 DG |
657 | int i, count, ret = CMD_SUCCESS; |
658 | struct lttng_domain *domains = NULL; | |
659 | ||
660 | MSG("Domains:\n-------------"); | |
661 | ||
330be774 | 662 | count = lttng_list_domains(session_name, &domains); |
9f19cc17 DG |
663 | if (count < 0) { |
664 | ret = count; | |
60e835ca | 665 | ERR("%s", lttng_strerror(ret)); |
9f19cc17 DG |
666 | goto error; |
667 | } else if (count == 0) { | |
668 | MSG(" None"); | |
669 | goto end; | |
670 | } | |
671 | ||
672 | for (i = 0; i < count; i++) { | |
673 | switch (domains[i].type) { | |
674 | case LTTNG_DOMAIN_KERNEL: | |
675 | MSG(" - Kernel"); | |
b551a063 DG |
676 | break; |
677 | case LTTNG_DOMAIN_UST: | |
678 | MSG(" - UST global"); | |
679 | break; | |
9f19cc17 DG |
680 | default: |
681 | break; | |
682 | } | |
683 | } | |
684 | ||
685 | end: | |
686 | free(domains); | |
687 | ||
688 | error: | |
689 | return ret; | |
f3ed775e | 690 | } |
f3ed775e DG |
691 | |
692 | /* | |
9f19cc17 | 693 | * The 'list <options>' first level command |
f3ed775e DG |
694 | */ |
695 | int cmd_list(int argc, const char **argv) | |
696 | { | |
c617c0c6 | 697 | int opt, ret = CMD_SUCCESS; |
9f19cc17 | 698 | const char *session_name; |
f3ed775e | 699 | static poptContext pc; |
9f19cc17 DG |
700 | struct lttng_domain domain; |
701 | struct lttng_domain *domains = NULL; | |
f3ed775e | 702 | |
441c16a7 MD |
703 | memset(&domain, 0, sizeof(domain)); |
704 | ||
9f19cc17 | 705 | if (argc < 1) { |
f3ed775e | 706 | usage(stderr); |
ca1c3607 | 707 | ret = CMD_ERROR; |
f3ed775e DG |
708 | goto end; |
709 | } | |
710 | ||
711 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
712 | poptReadDefaultConfig(pc, 0); | |
713 | ||
714 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
715 | switch (opt) { | |
716 | case OPT_HELP: | |
ca1c3607 | 717 | usage(stdout); |
f3ed775e | 718 | goto end; |
eeac7d46 MD |
719 | case OPT_USERSPACE: |
720 | opt_userspace = 1; | |
eeac7d46 | 721 | break; |
679b4943 SM |
722 | case OPT_LIST_OPTIONS: |
723 | list_cmd_options(stdout, long_options); | |
679b4943 | 724 | goto end; |
f3ed775e DG |
725 | default: |
726 | usage(stderr); | |
727 | ret = CMD_UNDEFINED; | |
728 | goto end; | |
729 | } | |
730 | } | |
731 | ||
9f19cc17 DG |
732 | /* Get session name (trailing argument) */ |
733 | session_name = poptGetArg(pc); | |
b551a063 | 734 | DBG2("Session name: %s", session_name); |
9f19cc17 | 735 | |
cd80958d DG |
736 | if (opt_kernel) { |
737 | domain.type = LTTNG_DOMAIN_KERNEL; | |
b551a063 DG |
738 | } else if (opt_userspace) { |
739 | DBG2("Listing userspace global domain"); | |
740 | domain.type = LTTNG_DOMAIN_UST; | |
cd80958d DG |
741 | } |
742 | ||
aa5de748 MD |
743 | if (opt_kernel || opt_userspace) { |
744 | handle = lttng_create_handle(session_name, &domain); | |
745 | if (handle == NULL) { | |
746 | ret = CMD_FATAL; | |
747 | goto end; | |
748 | } | |
cd80958d DG |
749 | } |
750 | ||
9f19cc17 | 751 | if (session_name == NULL) { |
b551a063 DG |
752 | if (!opt_kernel && !opt_userspace) { |
753 | ret = list_sessions(NULL); | |
b6913340 | 754 | if (ret != 0) { |
b551a063 DG |
755 | goto end; |
756 | } | |
757 | } | |
9f19cc17 DG |
758 | if (opt_kernel) { |
759 | ret = list_kernel_events(); | |
760 | if (ret < 0) { | |
6191db77 | 761 | ret = CMD_ERROR; |
9f19cc17 DG |
762 | goto end; |
763 | } | |
b551a063 DG |
764 | } |
765 | if (opt_userspace) { | |
f37d259d MD |
766 | if (opt_fields) { |
767 | ret = list_ust_event_fields(); | |
768 | } else { | |
769 | ret = list_ust_events(); | |
770 | } | |
9f19cc17 | 771 | if (ret < 0) { |
6191db77 | 772 | ret = CMD_ERROR; |
9f19cc17 DG |
773 | goto end; |
774 | } | |
775 | } | |
776 | } else { | |
777 | /* List session attributes */ | |
778 | ret = list_sessions(session_name); | |
b6913340 | 779 | if (ret != 0) { |
9f19cc17 DG |
780 | goto end; |
781 | } | |
782 | ||
783 | /* Domain listing */ | |
784 | if (opt_domain) { | |
330be774 | 785 | ret = list_domains(session_name); |
9f19cc17 DG |
786 | goto end; |
787 | } | |
788 | ||
789 | if (opt_kernel) { | |
9f19cc17 | 790 | /* Channel listing */ |
cd80958d | 791 | ret = list_channels(opt_channel); |
9f19cc17 DG |
792 | if (ret < 0) { |
793 | goto end; | |
794 | } | |
9f19cc17 | 795 | } else { |
c617c0c6 MD |
796 | int i, nb_domain; |
797 | ||
9f19cc17 | 798 | /* We want all domain(s) */ |
330be774 | 799 | nb_domain = lttng_list_domains(session_name, &domains); |
b551a063 | 800 | if (nb_domain < 0) { |
67635185 | 801 | ret = nb_domain; |
60e835ca | 802 | ERR("%s", lttng_strerror(ret)); |
9f19cc17 DG |
803 | goto end; |
804 | } | |
805 | ||
b551a063 | 806 | for (i = 0; i < nb_domain; i++) { |
9f19cc17 DG |
807 | switch (domains[i].type) { |
808 | case LTTNG_DOMAIN_KERNEL: | |
809 | MSG("=== Domain: Kernel ===\n"); | |
810 | break; | |
b551a063 DG |
811 | case LTTNG_DOMAIN_UST: |
812 | MSG("=== Domain: UST global ===\n"); | |
88c5f0d8 DG |
813 | MSG("Buffer type: %s\n", |
814 | domains[i].buf_type == | |
815 | LTTNG_BUFFER_PER_PID ? "per PID" : "per UID"); | |
b551a063 | 816 | break; |
9f19cc17 DG |
817 | default: |
818 | MSG("=== Domain: Unimplemented ===\n"); | |
819 | break; | |
820 | } | |
821 | ||
cd80958d | 822 | /* Clean handle before creating a new one */ |
aa5de748 MD |
823 | if (handle) { |
824 | lttng_destroy_handle(handle); | |
825 | } | |
cd80958d DG |
826 | |
827 | handle = lttng_create_handle(session_name, &domains[i]); | |
828 | if (handle == NULL) { | |
ca1c3607 | 829 | ret = CMD_FATAL; |
cd80958d DG |
830 | goto end; |
831 | } | |
832 | ||
833 | ret = list_channels(opt_channel); | |
9f19cc17 DG |
834 | if (ret < 0) { |
835 | goto end; | |
836 | } | |
837 | } | |
838 | } | |
f3ed775e DG |
839 | } |
840 | ||
841 | end: | |
0e428499 | 842 | free(domains); |
aa5de748 MD |
843 | if (handle) { |
844 | lttng_destroy_handle(handle); | |
845 | } | |
cd80958d | 846 | |
ca1c3607 | 847 | poptFreeContext(pc); |
f3ed775e DG |
848 | return ret; |
849 | } |