Commit | Line | Data |
---|---|---|
e953ef25 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. | |
e953ef25 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. | |
e953ef25 DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
e953ef25 DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
e4d484a5 JRJ |
27 | #include <assert.h> |
28 | ||
29 | #include <common/mi-lttng.h> | |
e953ef25 | 30 | |
c399183f | 31 | #include "../command.h" |
e953ef25 DG |
32 | |
33 | static char *opt_event_list; | |
9730260e | 34 | static int opt_kernel; |
e953ef25 | 35 | static char *opt_channel_name; |
5440dc42 | 36 | static char *opt_session_name; |
e953ef25 DG |
37 | static int opt_userspace; |
38 | static int opt_disable_all; | |
b9dfb167 | 39 | static int opt_jul; |
5cdb6027 | 40 | static int opt_log4j; |
0e115563 | 41 | static int opt_python; |
6e911cad | 42 | static int opt_event_type; |
d78d6610 DG |
43 | #if 0 |
44 | /* Not implemented yet */ | |
45 | static char *opt_cmd_name; | |
e953ef25 | 46 | static pid_t opt_pid; |
d78d6610 | 47 | #endif |
e953ef25 DG |
48 | |
49 | enum { | |
50 | OPT_HELP = 1, | |
51 | OPT_USERSPACE, | |
6e911cad | 52 | OPT_SYSCALL, |
679b4943 | 53 | OPT_LIST_OPTIONS, |
e953ef25 DG |
54 | }; |
55 | ||
cd80958d | 56 | static struct lttng_handle *handle; |
e4d484a5 | 57 | static struct mi_writer *writer; |
cd80958d | 58 | |
e953ef25 DG |
59 | static struct poptOption long_options[] = { |
60 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
61 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 62 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e953ef25 DG |
63 | {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0}, |
64 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, | |
b9dfb167 | 65 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 66 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 67 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
e953ef25 | 68 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
6e911cad | 69 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
d78d6610 DG |
70 | #if 0 |
71 | /* Not implemented yet */ | |
6caa2bcc | 72 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
e953ef25 | 73 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
74 | #else |
75 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
76 | #endif | |
679b4943 | 77 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
e953ef25 DG |
78 | {0, 0, 0, 0, 0, 0, 0} |
79 | }; | |
80 | ||
81 | /* | |
82 | * usage | |
83 | */ | |
84 | static void usage(FILE *ofp) | |
85 | { | |
c138a39b | 86 | fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n"); |
e953ef25 | 87 | fprintf(ofp, "\n"); |
32a6298d | 88 | fprintf(ofp, "Options:\n"); |
e953ef25 | 89 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 90 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d DG |
91 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
92 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); | |
9730260e | 93 | fprintf(ofp, " -a, --all-events Disable all tracepoints\n"); |
e953ef25 | 94 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
27221701 | 95 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
b9dfb167 | 96 | fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); |
5cdb6027 | 97 | fprintf(ofp, " -l, --log4j Apply to Java application using LOG4j\n"); |
0e115563 | 98 | fprintf(ofp, " -p, --python Apply to Python application using logging\n"); |
e953ef25 | 99 | fprintf(ofp, "\n"); |
6e911cad MD |
100 | fprintf(ofp, "Event options:\n"); |
101 | fprintf(ofp, " --syscall System call event\n"); | |
102 | fprintf(ofp, "\n"); | |
e953ef25 DG |
103 | } |
104 | ||
85076754 MD |
105 | static |
106 | const char *print_channel_name(const char *name) | |
107 | { | |
108 | return name ? : DEFAULT_CHANNEL_NAME; | |
109 | } | |
110 | ||
111 | static | |
112 | const char *print_raw_channel_name(const char *name) | |
113 | { | |
114 | return name ? : "<default>"; | |
115 | } | |
116 | ||
e4d484a5 JRJ |
117 | /* Mi print a partial event. |
118 | * enabled is 0 or 1 | |
119 | * success is 0 or 1 | |
120 | */ | |
121 | static int mi_print_event(char *event_name, int enabled, int success) | |
122 | { | |
123 | int ret; | |
124 | ||
125 | assert(writer); | |
126 | assert(event_name); | |
127 | ||
128 | /* Open event element */ | |
129 | ret = mi_lttng_writer_open_element(writer, config_element_event); | |
130 | if (ret) { | |
131 | goto end; | |
132 | } | |
133 | ||
134 | /* Print the name of event */ | |
135 | ret = mi_lttng_writer_write_element_string(writer, | |
136 | config_element_name, event_name); | |
137 | if (ret) { | |
138 | goto end; | |
139 | } | |
140 | ||
141 | /* Print enabled ? */ | |
142 | ret = mi_lttng_writer_write_element_bool(writer, | |
143 | config_element_enabled, enabled); | |
144 | if (ret) { | |
145 | goto end; | |
146 | } | |
147 | ||
148 | /* Success ? */ | |
149 | ret = mi_lttng_writer_write_element_bool(writer, | |
150 | mi_lttng_element_command_success, success); | |
151 | if (ret) { | |
152 | goto end; | |
153 | } | |
154 | ||
155 | /* Close event element */ | |
156 | ret = mi_lttng_writer_close_element(writer); | |
157 | end: | |
158 | return ret; | |
159 | } | |
160 | ||
e953ef25 DG |
161 | /* |
162 | * disable_events | |
163 | * | |
164 | * Disabling event using the lttng API. | |
165 | */ | |
cd80958d | 166 | static int disable_events(char *session_name) |
e953ef25 | 167 | { |
e4d484a5 JRJ |
168 | int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS; |
169 | int enabled = 1, success = 1; | |
b73d0b29 | 170 | char *event_name, *channel_name = NULL; |
7d29a247 | 171 | struct lttng_domain dom; |
6e911cad | 172 | struct lttng_event event; |
e953ef25 | 173 | |
441c16a7 MD |
174 | memset(&dom, 0, sizeof(dom)); |
175 | ||
d78d6610 | 176 | /* Create lttng domain */ |
7d29a247 DG |
177 | if (opt_kernel) { |
178 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 179 | } else if (opt_userspace) { |
9730260e | 180 | dom.type = LTTNG_DOMAIN_UST; |
b9dfb167 DG |
181 | } else if (opt_jul) { |
182 | dom.type = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
183 | } else if (opt_log4j) { |
184 | dom.type = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
185 | } else if (opt_python) { |
186 | dom.type = LTTNG_DOMAIN_PYTHON; | |
9730260e | 187 | } else { |
b9dfb167 | 188 | print_missing_domain(); |
d16c1a4c | 189 | ret = CMD_ERROR; |
9730260e | 190 | goto error; |
7d29a247 DG |
191 | } |
192 | ||
85076754 | 193 | channel_name = opt_channel_name; |
ae856491 | 194 | |
cd80958d DG |
195 | handle = lttng_create_handle(session_name, &dom); |
196 | if (handle == NULL) { | |
197 | ret = -1; | |
198 | goto error; | |
199 | } | |
200 | ||
e4d484a5 JRJ |
201 | /* Mi print the channel and open the events element */ |
202 | if (lttng_opt_mi) { | |
203 | ret = mi_lttng_writer_open_element(writer, config_element_channel); | |
204 | if (ret) { | |
205 | ret = CMD_ERROR; | |
206 | goto end; | |
e953ef25 DG |
207 | } |
208 | ||
e4d484a5 JRJ |
209 | ret = mi_lttng_writer_write_element_string(writer, |
210 | config_element_name, print_channel_name(channel_name)); | |
211 | if (ret) { | |
212 | ret = CMD_ERROR; | |
213 | goto end; | |
214 | } | |
215 | ||
216 | /* Open events element */ | |
217 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
218 | if (ret) { | |
219 | ret = CMD_ERROR; | |
220 | goto end; | |
221 | } | |
e953ef25 DG |
222 | } |
223 | ||
6e911cad MD |
224 | memset(&event, 0, sizeof(event)); |
225 | switch (opt_event_type) { | |
226 | case LTTNG_EVENT_SYSCALL: | |
227 | event.type = LTTNG_EVENT_SYSCALL; | |
228 | break; | |
229 | default: | |
230 | event.type = LTTNG_EVENT_ALL; | |
231 | break; | |
232 | } | |
233 | ||
e4d484a5 | 234 | if (opt_disable_all) { |
6e911cad | 235 | command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); |
e4d484a5 JRJ |
236 | if (command_ret < 0) { |
237 | ERR("%s", lttng_strerror(command_ret)); | |
238 | enabled = 1; | |
239 | success = 0; | |
240 | ||
9730260e | 241 | } else { |
e4d484a5 JRJ |
242 | enabled = 0; |
243 | success = 1; | |
6e911cad MD |
244 | MSG("All %s %s are disabled in channel %s", |
245 | get_domain_str(dom.type), | |
246 | opt_event_type == LTTNG_EVENT_SYSCALL ? "system calls" : "events", | |
247 | print_channel_name(channel_name)); | |
9730260e DG |
248 | } |
249 | ||
e4d484a5 JRJ |
250 | if (lttng_opt_mi) { |
251 | ret = mi_print_event("*", enabled, success); | |
252 | if (ret) { | |
253 | ret = CMD_ERROR; | |
254 | goto error; | |
255 | } | |
256 | } | |
257 | } else { | |
258 | /* Strip event list */ | |
259 | event_name = strtok(opt_event_list, ","); | |
260 | while (event_name != NULL) { | |
261 | DBG("Disabling event %s", event_name); | |
e953ef25 | 262 | |
6e911cad MD |
263 | strncpy(event.name, event_name, sizeof(event.name)); |
264 | event.name[sizeof(event.name) - 1] = '\0'; | |
265 | command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
e4d484a5 | 266 | if (command_ret < 0) { |
6e911cad MD |
267 | ERR("%s %s: %s (channel %s, session %s)", |
268 | opt_event_type == LTTNG_EVENT_SYSCALL ? "System call" : "Event", | |
269 | event_name, | |
e4d484a5 JRJ |
270 | lttng_strerror(command_ret), |
271 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
272 | ? print_raw_channel_name(channel_name) | |
273 | : print_channel_name(channel_name), | |
274 | session_name); | |
275 | warn = 1; | |
276 | success = 0; | |
277 | /* | |
6e911cad MD |
278 | * If an error occurred we assume that the event is still |
279 | * enabled. | |
e4d484a5 JRJ |
280 | */ |
281 | enabled = 1; | |
282 | } else { | |
6e911cad MD |
283 | MSG("%s %s %s disabled in channel %s for session %s", |
284 | get_domain_str(dom.type), | |
285 | opt_event_type == LTTNG_EVENT_SYSCALL ? "system call" : "event", | |
286 | event_name, | |
e4d484a5 JRJ |
287 | print_channel_name(channel_name), |
288 | session_name); | |
289 | success = 1; | |
290 | enabled = 0; | |
291 | } | |
292 | ||
293 | if (lttng_opt_mi) { | |
294 | ret = mi_print_event(event_name, enabled, success); | |
295 | if (ret) { | |
296 | ret = CMD_ERROR; | |
297 | goto error; | |
298 | } | |
299 | } | |
300 | ||
301 | /* Next event */ | |
302 | event_name = strtok(NULL, ","); | |
303 | } | |
304 | } | |
ae856491 | 305 | |
9730260e | 306 | end: |
e4d484a5 JRJ |
307 | if (lttng_opt_mi) { |
308 | /* Close events element and channel element */ | |
309 | ret = mi_lttng_close_multi_element(writer, 2); | |
310 | if (ret) { | |
311 | ret = CMD_ERROR; | |
312 | } | |
313 | } | |
e953ef25 | 314 | error: |
e4d484a5 JRJ |
315 | /* if there is already an error preserve it */ |
316 | if (warn && !ret) { | |
ae856491 DG |
317 | ret = CMD_WARNING; |
318 | } | |
cd80958d | 319 | |
e4d484a5 JRJ |
320 | /* Overwrite ret if an error occurred */ |
321 | ret = command_ret ? command_ret : ret; | |
322 | ||
323 | lttng_destroy_handle(handle); | |
e953ef25 DG |
324 | return ret; |
325 | } | |
326 | ||
327 | /* | |
328 | * cmd_disable_events | |
329 | * | |
330 | * Disable event to trace session | |
331 | */ | |
332 | int cmd_disable_events(int argc, const char **argv) | |
333 | { | |
e4d484a5 | 334 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
e953ef25 | 335 | static poptContext pc; |
cd80958d | 336 | char *session_name = NULL; |
6e911cad | 337 | int event_type = -1; |
e953ef25 DG |
338 | |
339 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
340 | poptReadDefaultConfig(pc, 0); | |
341 | ||
6e911cad MD |
342 | /* Default event type */ |
343 | opt_event_type = LTTNG_EVENT_ALL; | |
344 | ||
e953ef25 DG |
345 | while ((opt = poptGetNextOpt(pc)) != -1) { |
346 | switch (opt) { | |
347 | case OPT_HELP: | |
ca1c3607 | 348 | usage(stdout); |
e953ef25 DG |
349 | goto end; |
350 | case OPT_USERSPACE: | |
351 | opt_userspace = 1; | |
e953ef25 | 352 | break; |
6e911cad MD |
353 | case OPT_SYSCALL: |
354 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
355 | break; | |
679b4943 SM |
356 | case OPT_LIST_OPTIONS: |
357 | list_cmd_options(stdout, long_options); | |
679b4943 | 358 | goto end; |
e953ef25 DG |
359 | default: |
360 | usage(stderr); | |
361 | ret = CMD_UNDEFINED; | |
362 | goto end; | |
363 | } | |
6e911cad MD |
364 | |
365 | /* Validate event type. Multiple event type are not supported. */ | |
366 | if (event_type == -1) { | |
367 | event_type = opt_event_type; | |
368 | } else { | |
369 | if (event_type != opt_event_type) { | |
370 | ERR("Multiple event type not supported."); | |
371 | ret = CMD_ERROR; | |
372 | goto end; | |
373 | } | |
374 | } | |
e953ef25 DG |
375 | } |
376 | ||
377 | opt_event_list = (char*) poptGetArg(pc); | |
378 | if (opt_event_list == NULL && opt_disable_all == 0) { | |
379 | ERR("Missing event name(s).\n"); | |
380 | usage(stderr); | |
ca1c3607 | 381 | ret = CMD_ERROR; |
e953ef25 DG |
382 | goto end; |
383 | } | |
384 | ||
cd80958d DG |
385 | if (!opt_session_name) { |
386 | session_name = get_session_name(); | |
387 | if (session_name == NULL) { | |
ca1c3607 | 388 | ret = CMD_ERROR; |
cd80958d DG |
389 | goto end; |
390 | } | |
391 | } else { | |
392 | session_name = opt_session_name; | |
393 | } | |
394 | ||
e4d484a5 JRJ |
395 | /* Mi check */ |
396 | if (lttng_opt_mi) { | |
397 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
398 | if (!writer) { | |
399 | ret = -LTTNG_ERR_NOMEM; | |
400 | goto end; | |
401 | } | |
402 | ||
403 | /* Open command element */ | |
404 | ret = mi_lttng_writer_command_open(writer, | |
405 | mi_lttng_element_command_disable_event); | |
406 | if (ret) { | |
407 | ret = CMD_ERROR; | |
408 | goto end; | |
409 | } | |
410 | ||
411 | /* Open output element */ | |
412 | ret = mi_lttng_writer_open_element(writer, | |
413 | mi_lttng_element_command_output); | |
414 | if (ret) { | |
415 | ret = CMD_ERROR; | |
416 | goto end; | |
417 | } | |
418 | } | |
419 | ||
420 | command_ret = disable_events(session_name); | |
421 | if (command_ret) { | |
422 | success = 0; | |
423 | } | |
424 | ||
425 | /* Mi closing */ | |
426 | if (lttng_opt_mi) { | |
427 | /* Close output element */ | |
428 | ret = mi_lttng_writer_close_element(writer); | |
429 | if (ret) { | |
430 | ret = CMD_ERROR; | |
431 | goto end; | |
432 | } | |
433 | ||
434 | ret = mi_lttng_writer_write_element_bool(writer, | |
435 | mi_lttng_element_command_success, success); | |
436 | if (ret) { | |
437 | ret = CMD_ERROR; | |
438 | goto end; | |
439 | } | |
440 | ||
441 | /* Command element close */ | |
442 | ret = mi_lttng_writer_command_close(writer); | |
443 | if (ret) { | |
444 | ret = CMD_ERROR; | |
445 | goto end; | |
446 | } | |
447 | } | |
e953ef25 DG |
448 | |
449 | end: | |
5853fd43 DG |
450 | if (!opt_session_name && session_name) { |
451 | free(session_name); | |
452 | } | |
e4d484a5 JRJ |
453 | |
454 | /* Mi clean-up */ | |
455 | if (writer && mi_lttng_writer_destroy(writer)) { | |
456 | /* Preserve original error code */ | |
457 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
458 | } | |
459 | ||
460 | /* Overwrite ret if an error occured in disable_events */ | |
461 | ret = command_ret ? command_ret : ret; | |
462 | ||
ca1c3607 | 463 | poptFreeContext(pc); |
e953ef25 DG |
464 | return ret; |
465 | } |