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; |
e953ef25 DG |
43 | |
44 | enum { | |
45 | OPT_HELP = 1, | |
46 | OPT_USERSPACE, | |
6e911cad | 47 | OPT_SYSCALL, |
679b4943 | 48 | OPT_LIST_OPTIONS, |
e953ef25 DG |
49 | }; |
50 | ||
cd80958d | 51 | static struct lttng_handle *handle; |
e4d484a5 | 52 | static struct mi_writer *writer; |
cd80958d | 53 | |
e953ef25 DG |
54 | static struct poptOption long_options[] = { |
55 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
56 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 57 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e953ef25 DG |
58 | {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0}, |
59 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, | |
b9dfb167 | 60 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 61 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
0e115563 | 62 | {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0}, |
e953ef25 | 63 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
6e911cad | 64 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
d78d6610 | 65 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
679b4943 | 66 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
e953ef25 DG |
67 | {0, 0, 0, 0, 0, 0, 0} |
68 | }; | |
69 | ||
70 | /* | |
71 | * usage | |
72 | */ | |
73 | static void usage(FILE *ofp) | |
74 | { | |
c138a39b | 75 | fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n"); |
e953ef25 | 76 | fprintf(ofp, "\n"); |
32a6298d | 77 | fprintf(ofp, "Options:\n"); |
e953ef25 | 78 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 79 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d DG |
80 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
81 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); | |
9730260e | 82 | fprintf(ofp, " -a, --all-events Disable all tracepoints\n"); |
e953ef25 | 83 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
27221701 | 84 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
b9dfb167 | 85 | fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); |
5cdb6027 | 86 | fprintf(ofp, " -l, --log4j Apply to Java application using LOG4j\n"); |
0e115563 | 87 | fprintf(ofp, " -p, --python Apply to Python application using logging\n"); |
e953ef25 | 88 | fprintf(ofp, "\n"); |
6e911cad MD |
89 | fprintf(ofp, "Event options:\n"); |
90 | fprintf(ofp, " --syscall System call event\n"); | |
91 | fprintf(ofp, "\n"); | |
e953ef25 DG |
92 | } |
93 | ||
85076754 MD |
94 | static |
95 | const char *print_channel_name(const char *name) | |
96 | { | |
97 | return name ? : DEFAULT_CHANNEL_NAME; | |
98 | } | |
99 | ||
100 | static | |
101 | const char *print_raw_channel_name(const char *name) | |
102 | { | |
103 | return name ? : "<default>"; | |
104 | } | |
105 | ||
e4d484a5 JRJ |
106 | /* Mi print a partial event. |
107 | * enabled is 0 or 1 | |
108 | * success is 0 or 1 | |
109 | */ | |
110 | static int mi_print_event(char *event_name, int enabled, int success) | |
111 | { | |
112 | int ret; | |
113 | ||
114 | assert(writer); | |
115 | assert(event_name); | |
116 | ||
117 | /* Open event element */ | |
118 | ret = mi_lttng_writer_open_element(writer, config_element_event); | |
119 | if (ret) { | |
120 | goto end; | |
121 | } | |
122 | ||
123 | /* Print the name of event */ | |
124 | ret = mi_lttng_writer_write_element_string(writer, | |
125 | config_element_name, event_name); | |
126 | if (ret) { | |
127 | goto end; | |
128 | } | |
129 | ||
130 | /* Print enabled ? */ | |
131 | ret = mi_lttng_writer_write_element_bool(writer, | |
132 | config_element_enabled, enabled); | |
133 | if (ret) { | |
134 | goto end; | |
135 | } | |
136 | ||
137 | /* Success ? */ | |
138 | ret = mi_lttng_writer_write_element_bool(writer, | |
139 | mi_lttng_element_command_success, success); | |
140 | if (ret) { | |
141 | goto end; | |
142 | } | |
143 | ||
144 | /* Close event element */ | |
145 | ret = mi_lttng_writer_close_element(writer); | |
146 | end: | |
147 | return ret; | |
148 | } | |
149 | ||
e953ef25 DG |
150 | /* |
151 | * disable_events | |
152 | * | |
153 | * Disabling event using the lttng API. | |
154 | */ | |
cd80958d | 155 | static int disable_events(char *session_name) |
e953ef25 | 156 | { |
e4d484a5 JRJ |
157 | int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS; |
158 | int enabled = 1, success = 1; | |
b73d0b29 | 159 | char *event_name, *channel_name = NULL; |
7d29a247 | 160 | struct lttng_domain dom; |
6e911cad | 161 | struct lttng_event event; |
e953ef25 | 162 | |
441c16a7 MD |
163 | memset(&dom, 0, sizeof(dom)); |
164 | ||
d78d6610 | 165 | /* Create lttng domain */ |
7d29a247 DG |
166 | if (opt_kernel) { |
167 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 168 | } else if (opt_userspace) { |
9730260e | 169 | dom.type = LTTNG_DOMAIN_UST; |
b9dfb167 DG |
170 | } else if (opt_jul) { |
171 | dom.type = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
172 | } else if (opt_log4j) { |
173 | dom.type = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
174 | } else if (opt_python) { |
175 | dom.type = LTTNG_DOMAIN_PYTHON; | |
9730260e | 176 | } else { |
3ecec76a PP |
177 | /* Checked by the caller. */ |
178 | assert(0); | |
7d29a247 DG |
179 | } |
180 | ||
85076754 | 181 | channel_name = opt_channel_name; |
ae856491 | 182 | |
cd80958d DG |
183 | handle = lttng_create_handle(session_name, &dom); |
184 | if (handle == NULL) { | |
185 | ret = -1; | |
186 | goto error; | |
187 | } | |
188 | ||
e4d484a5 JRJ |
189 | /* Mi print the channel and open the events element */ |
190 | if (lttng_opt_mi) { | |
191 | ret = mi_lttng_writer_open_element(writer, config_element_channel); | |
192 | if (ret) { | |
193 | ret = CMD_ERROR; | |
194 | goto end; | |
e953ef25 DG |
195 | } |
196 | ||
e4d484a5 JRJ |
197 | ret = mi_lttng_writer_write_element_string(writer, |
198 | config_element_name, print_channel_name(channel_name)); | |
199 | if (ret) { | |
200 | ret = CMD_ERROR; | |
201 | goto end; | |
202 | } | |
203 | ||
204 | /* Open events element */ | |
205 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
206 | if (ret) { | |
207 | ret = CMD_ERROR; | |
208 | goto end; | |
209 | } | |
e953ef25 DG |
210 | } |
211 | ||
6e911cad | 212 | memset(&event, 0, sizeof(event)); |
9b7431cf JG |
213 | /* Set default loglevel to any/unknown */ |
214 | event.loglevel = -1; | |
215 | ||
6e911cad MD |
216 | switch (opt_event_type) { |
217 | case LTTNG_EVENT_SYSCALL: | |
218 | event.type = LTTNG_EVENT_SYSCALL; | |
219 | break; | |
220 | default: | |
221 | event.type = LTTNG_EVENT_ALL; | |
222 | break; | |
223 | } | |
224 | ||
e4d484a5 | 225 | if (opt_disable_all) { |
6e911cad | 226 | command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); |
e4d484a5 JRJ |
227 | if (command_ret < 0) { |
228 | ERR("%s", lttng_strerror(command_ret)); | |
229 | enabled = 1; | |
230 | success = 0; | |
231 | ||
9730260e | 232 | } else { |
e4d484a5 JRJ |
233 | enabled = 0; |
234 | success = 1; | |
6e911cad MD |
235 | MSG("All %s %s are disabled in channel %s", |
236 | get_domain_str(dom.type), | |
237 | opt_event_type == LTTNG_EVENT_SYSCALL ? "system calls" : "events", | |
238 | print_channel_name(channel_name)); | |
9730260e DG |
239 | } |
240 | ||
e4d484a5 JRJ |
241 | if (lttng_opt_mi) { |
242 | ret = mi_print_event("*", enabled, success); | |
243 | if (ret) { | |
244 | ret = CMD_ERROR; | |
245 | goto error; | |
246 | } | |
247 | } | |
248 | } else { | |
249 | /* Strip event list */ | |
250 | event_name = strtok(opt_event_list, ","); | |
251 | while (event_name != NULL) { | |
252 | DBG("Disabling event %s", event_name); | |
e953ef25 | 253 | |
6e911cad MD |
254 | strncpy(event.name, event_name, sizeof(event.name)); |
255 | event.name[sizeof(event.name) - 1] = '\0'; | |
256 | command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
e4d484a5 | 257 | if (command_ret < 0) { |
6e911cad MD |
258 | ERR("%s %s: %s (channel %s, session %s)", |
259 | opt_event_type == LTTNG_EVENT_SYSCALL ? "System call" : "Event", | |
260 | event_name, | |
e4d484a5 JRJ |
261 | lttng_strerror(command_ret), |
262 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
263 | ? print_raw_channel_name(channel_name) | |
264 | : print_channel_name(channel_name), | |
265 | session_name); | |
266 | warn = 1; | |
267 | success = 0; | |
268 | /* | |
6e911cad MD |
269 | * If an error occurred we assume that the event is still |
270 | * enabled. | |
e4d484a5 JRJ |
271 | */ |
272 | enabled = 1; | |
273 | } else { | |
6e911cad MD |
274 | MSG("%s %s %s disabled in channel %s for session %s", |
275 | get_domain_str(dom.type), | |
276 | opt_event_type == LTTNG_EVENT_SYSCALL ? "system call" : "event", | |
277 | event_name, | |
e4d484a5 JRJ |
278 | print_channel_name(channel_name), |
279 | session_name); | |
280 | success = 1; | |
281 | enabled = 0; | |
282 | } | |
283 | ||
284 | if (lttng_opt_mi) { | |
285 | ret = mi_print_event(event_name, enabled, success); | |
286 | if (ret) { | |
287 | ret = CMD_ERROR; | |
288 | goto error; | |
289 | } | |
290 | } | |
291 | ||
292 | /* Next event */ | |
293 | event_name = strtok(NULL, ","); | |
294 | } | |
295 | } | |
ae856491 | 296 | |
9730260e | 297 | end: |
e4d484a5 JRJ |
298 | if (lttng_opt_mi) { |
299 | /* Close events element and channel element */ | |
300 | ret = mi_lttng_close_multi_element(writer, 2); | |
301 | if (ret) { | |
302 | ret = CMD_ERROR; | |
303 | } | |
304 | } | |
e953ef25 | 305 | error: |
e4d484a5 JRJ |
306 | /* if there is already an error preserve it */ |
307 | if (warn && !ret) { | |
ae856491 DG |
308 | ret = CMD_WARNING; |
309 | } | |
cd80958d | 310 | |
e4d484a5 JRJ |
311 | /* Overwrite ret if an error occurred */ |
312 | ret = command_ret ? command_ret : ret; | |
313 | ||
314 | lttng_destroy_handle(handle); | |
e953ef25 DG |
315 | return ret; |
316 | } | |
317 | ||
318 | /* | |
319 | * cmd_disable_events | |
320 | * | |
321 | * Disable event to trace session | |
322 | */ | |
323 | int cmd_disable_events(int argc, const char **argv) | |
324 | { | |
e4d484a5 | 325 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
e953ef25 | 326 | static poptContext pc; |
cd80958d | 327 | char *session_name = NULL; |
6e911cad | 328 | int event_type = -1; |
e953ef25 DG |
329 | |
330 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
331 | poptReadDefaultConfig(pc, 0); | |
332 | ||
6e911cad MD |
333 | /* Default event type */ |
334 | opt_event_type = LTTNG_EVENT_ALL; | |
335 | ||
e953ef25 DG |
336 | while ((opt = poptGetNextOpt(pc)) != -1) { |
337 | switch (opt) { | |
338 | case OPT_HELP: | |
ca1c3607 | 339 | usage(stdout); |
e953ef25 DG |
340 | goto end; |
341 | case OPT_USERSPACE: | |
342 | opt_userspace = 1; | |
e953ef25 | 343 | break; |
6e911cad MD |
344 | case OPT_SYSCALL: |
345 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
346 | break; | |
679b4943 SM |
347 | case OPT_LIST_OPTIONS: |
348 | list_cmd_options(stdout, long_options); | |
679b4943 | 349 | goto end; |
e953ef25 DG |
350 | default: |
351 | usage(stderr); | |
352 | ret = CMD_UNDEFINED; | |
353 | goto end; | |
354 | } | |
6e911cad MD |
355 | |
356 | /* Validate event type. Multiple event type are not supported. */ | |
357 | if (event_type == -1) { | |
358 | event_type = opt_event_type; | |
359 | } else { | |
360 | if (event_type != opt_event_type) { | |
361 | ERR("Multiple event type not supported."); | |
362 | ret = CMD_ERROR; | |
363 | goto end; | |
364 | } | |
365 | } | |
e953ef25 DG |
366 | } |
367 | ||
3ecec76a PP |
368 | ret = print_missing_or_multiple_domains( |
369 | opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python); | |
370 | if (ret) { | |
371 | ret = CMD_ERROR; | |
372 | goto end; | |
373 | } | |
374 | ||
e953ef25 DG |
375 | opt_event_list = (char*) poptGetArg(pc); |
376 | if (opt_event_list == NULL && opt_disable_all == 0) { | |
377 | ERR("Missing event name(s).\n"); | |
378 | usage(stderr); | |
ca1c3607 | 379 | ret = CMD_ERROR; |
e953ef25 DG |
380 | goto end; |
381 | } | |
382 | ||
cd80958d DG |
383 | if (!opt_session_name) { |
384 | session_name = get_session_name(); | |
385 | if (session_name == NULL) { | |
ca1c3607 | 386 | ret = CMD_ERROR; |
cd80958d DG |
387 | goto end; |
388 | } | |
389 | } else { | |
390 | session_name = opt_session_name; | |
391 | } | |
392 | ||
e4d484a5 JRJ |
393 | /* Mi check */ |
394 | if (lttng_opt_mi) { | |
395 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
396 | if (!writer) { | |
397 | ret = -LTTNG_ERR_NOMEM; | |
398 | goto end; | |
399 | } | |
400 | ||
401 | /* Open command element */ | |
402 | ret = mi_lttng_writer_command_open(writer, | |
403 | mi_lttng_element_command_disable_event); | |
404 | if (ret) { | |
405 | ret = CMD_ERROR; | |
406 | goto end; | |
407 | } | |
408 | ||
409 | /* Open output element */ | |
410 | ret = mi_lttng_writer_open_element(writer, | |
411 | mi_lttng_element_command_output); | |
412 | if (ret) { | |
413 | ret = CMD_ERROR; | |
414 | goto end; | |
415 | } | |
416 | } | |
417 | ||
418 | command_ret = disable_events(session_name); | |
419 | if (command_ret) { | |
420 | success = 0; | |
421 | } | |
422 | ||
423 | /* Mi closing */ | |
424 | if (lttng_opt_mi) { | |
425 | /* Close output element */ | |
426 | ret = mi_lttng_writer_close_element(writer); | |
427 | if (ret) { | |
428 | ret = CMD_ERROR; | |
429 | goto end; | |
430 | } | |
431 | ||
432 | ret = mi_lttng_writer_write_element_bool(writer, | |
433 | mi_lttng_element_command_success, success); | |
434 | if (ret) { | |
435 | ret = CMD_ERROR; | |
436 | goto end; | |
437 | } | |
438 | ||
439 | /* Command element close */ | |
440 | ret = mi_lttng_writer_command_close(writer); | |
441 | if (ret) { | |
442 | ret = CMD_ERROR; | |
443 | goto end; | |
444 | } | |
445 | } | |
e953ef25 DG |
446 | |
447 | end: | |
5853fd43 DG |
448 | if (!opt_session_name && session_name) { |
449 | free(session_name); | |
450 | } | |
e4d484a5 JRJ |
451 | |
452 | /* Mi clean-up */ | |
453 | if (writer && mi_lttng_writer_destroy(writer)) { | |
454 | /* Preserve original error code */ | |
455 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
456 | } | |
457 | ||
458 | /* Overwrite ret if an error occured in disable_events */ | |
459 | ret = command_ret ? command_ret : ret; | |
460 | ||
ca1c3607 | 461 | poptFreeContext(pc); |
e953ef25 DG |
462 | return ret; |
463 | } |