Commit | Line | Data |
---|---|---|
d36b8583 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. | |
d36b8583 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. | |
d36b8583 DG |
16 | */ |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
d36b8583 DG |
19 | #include <popt.h> |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
5a0de755 | 26 | #include <inttypes.h> |
1cb514ce MD |
27 | #include <assert.h> |
28 | #include <ctype.h> | |
d36b8583 | 29 | |
acc09215 JRJ |
30 | #include <common/sessiond-comm/sessiond-comm.h> |
31 | #include <common/utils.h> | |
32 | #include <common/mi-lttng.h> | |
33 | ||
c399183f | 34 | #include "../command.h" |
1cb514ce | 35 | #include "../utils.h" |
d36b8583 | 36 | |
42224349 | 37 | |
cf0bcb51 | 38 | static struct lttng_channel chan_opts; |
d36b8583 | 39 | static char *opt_channels; |
5edd7e09 | 40 | static int opt_kernel; |
5440dc42 | 41 | static char *opt_session_name; |
d36b8583 | 42 | static int opt_userspace; |
a79d84dd | 43 | static char *opt_output; |
7972aab2 DG |
44 | static int opt_buffer_uid; |
45 | static int opt_buffer_pid; | |
46 | static int opt_buffer_global; | |
cf0bcb51 JG |
47 | static struct { |
48 | bool set; | |
8193ef17 | 49 | uint64_t interval; |
cf0bcb51 | 50 | } opt_monitor_timer; |
491d1539 MD |
51 | static struct { |
52 | bool set; | |
53 | int64_t value; | |
54 | } opt_blocking_timeout; | |
d36b8583 | 55 | |
acc09215 JRJ |
56 | static struct mi_writer *writer; |
57 | ||
4fc83d94 PP |
58 | #ifdef LTTNG_EMBED_HELP |
59 | static const char help_msg[] = | |
60 | #include <lttng-enable-channel.1.h> | |
61 | ; | |
62 | #endif | |
63 | ||
d36b8583 DG |
64 | enum { |
65 | OPT_HELP = 1, | |
7d29a247 DG |
66 | OPT_DISCARD, |
67 | OPT_OVERWRITE, | |
68 | OPT_SUBBUF_SIZE, | |
69 | OPT_NUM_SUBBUF, | |
70 | OPT_SWITCH_TIMER, | |
cf0bcb51 | 71 | OPT_MONITOR_TIMER, |
7d29a247 | 72 | OPT_READ_TIMER, |
d36b8583 | 73 | OPT_USERSPACE, |
679b4943 | 74 | OPT_LIST_OPTIONS, |
1624d5b7 JD |
75 | OPT_TRACEFILE_SIZE, |
76 | OPT_TRACEFILE_COUNT, | |
491d1539 | 77 | OPT_BLOCKING_TIMEOUT, |
d36b8583 DG |
78 | }; |
79 | ||
cd80958d DG |
80 | static struct lttng_handle *handle; |
81 | ||
a79d84dd DG |
82 | const char *output_mmap = "mmap"; |
83 | const char *output_splice = "splice"; | |
84 | ||
d36b8583 DG |
85 | static struct poptOption long_options[] = { |
86 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
87 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 88 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
d36b8583 | 89 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 | 90 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
7d29a247 DG |
91 | {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0}, |
92 | {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0}, | |
70d0b120 | 93 | {"subbuf-size", 0, POPT_ARG_STRING, 0, OPT_SUBBUF_SIZE, 0, 0}, |
1b579521 DG |
94 | {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0}, |
95 | {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0}, | |
cf0bcb51 | 96 | {"monitor-timer", 0, POPT_ARG_INT, 0, OPT_MONITOR_TIMER, 0, 0}, |
1b579521 | 97 | {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0}, |
679b4943 | 98 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
a79d84dd | 99 | {"output", 0, POPT_ARG_STRING, &opt_output, 0, 0, 0}, |
7972aab2 DG |
100 | {"buffers-uid", 0, POPT_ARG_VAL, &opt_buffer_uid, 1, 0, 0}, |
101 | {"buffers-pid", 0, POPT_ARG_VAL, &opt_buffer_pid, 1, 0, 0}, | |
102 | {"buffers-global", 0, POPT_ARG_VAL, &opt_buffer_global, 1, 0, 0}, | |
1624d5b7 JD |
103 | {"tracefile-size", 'C', POPT_ARG_INT, 0, OPT_TRACEFILE_SIZE, 0, 0}, |
104 | {"tracefile-count", 'W', POPT_ARG_INT, 0, OPT_TRACEFILE_COUNT, 0, 0}, | |
491d1539 | 105 | {"blocking-timeout", 0, POPT_ARG_INT, 0, OPT_BLOCKING_TIMEOUT, 0, 0}, |
d36b8583 DG |
106 | {0, 0, 0, 0, 0, 0, 0} |
107 | }; | |
108 | ||
5edd7e09 DG |
109 | /* |
110 | * Set default attributes depending on those already defined from the command | |
111 | * line. | |
112 | */ | |
113 | static void set_default_attr(struct lttng_domain *dom) | |
114 | { | |
115 | struct lttng_channel_attr default_attr; | |
116 | ||
c1e4642c JG |
117 | memset(&default_attr, 0, sizeof(default_attr)); |
118 | ||
5edd7e09 DG |
119 | /* Set attributes */ |
120 | lttng_channel_set_default_attr(dom, &default_attr); | |
121 | ||
cf0bcb51 JG |
122 | if (chan_opts.attr.overwrite == -1) { |
123 | chan_opts.attr.overwrite = default_attr.overwrite; | |
5edd7e09 | 124 | } |
cf0bcb51 JG |
125 | if (chan_opts.attr.subbuf_size == -1) { |
126 | chan_opts.attr.subbuf_size = default_attr.subbuf_size; | |
5edd7e09 | 127 | } |
cf0bcb51 JG |
128 | if (chan_opts.attr.num_subbuf == -1) { |
129 | chan_opts.attr.num_subbuf = default_attr.num_subbuf; | |
5edd7e09 | 130 | } |
cf0bcb51 JG |
131 | if (chan_opts.attr.switch_timer_interval == -1) { |
132 | chan_opts.attr.switch_timer_interval = default_attr.switch_timer_interval; | |
5edd7e09 | 133 | } |
cf0bcb51 JG |
134 | if (chan_opts.attr.read_timer_interval == -1) { |
135 | chan_opts.attr.read_timer_interval = default_attr.read_timer_interval; | |
5edd7e09 | 136 | } |
cf0bcb51 JG |
137 | if ((int) chan_opts.attr.output == -1) { |
138 | chan_opts.attr.output = default_attr.output; | |
5edd7e09 | 139 | } |
cf0bcb51 JG |
140 | if (chan_opts.attr.tracefile_count == -1) { |
141 | chan_opts.attr.tracefile_count = default_attr.tracefile_count; | |
1624d5b7 | 142 | } |
cf0bcb51 JG |
143 | if (chan_opts.attr.tracefile_size == -1) { |
144 | chan_opts.attr.tracefile_size = default_attr.tracefile_size; | |
1624d5b7 | 145 | } |
5edd7e09 DG |
146 | } |
147 | ||
d36b8583 | 148 | /* |
0fdd1e2c | 149 | * Adding channel using the lttng API. |
d36b8583 | 150 | */ |
cd80958d | 151 | static int enable_channel(char *session_name) |
d36b8583 | 152 | { |
cf0bcb51 | 153 | struct lttng_channel *channel = NULL; |
acc09215 | 154 | int ret = CMD_SUCCESS, warn = 0, error = 0, success = 0; |
d36b8583 | 155 | char *channel_name; |
7d29a247 | 156 | struct lttng_domain dom; |
d36b8583 | 157 | |
441c16a7 MD |
158 | memset(&dom, 0, sizeof(dom)); |
159 | ||
491d1539 MD |
160 | /* Validate options. */ |
161 | if (opt_kernel) { | |
162 | if (opt_blocking_timeout.set) { | |
163 | ERR("Retry timeout option not supported for kernel domain (-k)"); | |
164 | ret = CMD_ERROR; | |
165 | goto error; | |
166 | } | |
167 | } | |
168 | ||
d78d6610 | 169 | /* Create lttng domain */ |
7d29a247 DG |
170 | if (opt_kernel) { |
171 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 172 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
88c5f0d8 DG |
173 | if (opt_buffer_uid || opt_buffer_pid) { |
174 | ERR("Buffer type not supported for domain -k"); | |
175 | ret = CMD_ERROR; | |
176 | goto error; | |
177 | } | |
d78d6610 | 178 | } else if (opt_userspace) { |
f6a9efaa | 179 | dom.type = LTTNG_DOMAIN_UST; |
8692d4e5 DG |
180 | if (opt_buffer_pid) { |
181 | dom.buf_type = LTTNG_BUFFER_PER_PID; | |
7972aab2 | 182 | } else { |
88c5f0d8 DG |
183 | if (opt_buffer_global) { |
184 | ERR("Buffer type not supported for domain -u"); | |
185 | ret = CMD_ERROR; | |
186 | goto error; | |
187 | } | |
8692d4e5 | 188 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
7972aab2 | 189 | } |
0fdd1e2c | 190 | } else { |
3ecec76a PP |
191 | /* Checked by the caller. */ |
192 | assert(0); | |
7d29a247 DG |
193 | } |
194 | ||
5edd7e09 DG |
195 | set_default_attr(&dom); |
196 | ||
cf0bcb51 | 197 | if (chan_opts.attr.tracefile_size == 0 && chan_opts.attr.tracefile_count) { |
d16dee89 DG |
198 | ERR("Missing option --tracefile-size. " |
199 | "A file count without a size won't do anything."); | |
200 | ret = CMD_ERROR; | |
201 | goto error; | |
202 | } | |
203 | ||
cf0bcb51 JG |
204 | if ((chan_opts.attr.tracefile_size > 0) && |
205 | (chan_opts.attr.tracefile_size < chan_opts.attr.subbuf_size)) { | |
de65565a | 206 | WARN("Tracefile size rounded up from (%" PRIu64 ") to subbuffer size (%" PRIu64 ")", |
cf0bcb51 JG |
207 | chan_opts.attr.tracefile_size, chan_opts.attr.subbuf_size); |
208 | chan_opts.attr.tracefile_size = chan_opts.attr.subbuf_size; | |
1624d5b7 JD |
209 | } |
210 | ||
a79d84dd DG |
211 | /* Setting channel output */ |
212 | if (opt_output) { | |
213 | if (!strncmp(output_mmap, opt_output, strlen(output_mmap))) { | |
cf0bcb51 | 214 | chan_opts.attr.output = LTTNG_EVENT_MMAP; |
a79d84dd | 215 | } else if (!strncmp(output_splice, opt_output, strlen(output_splice))) { |
cf0bcb51 | 216 | chan_opts.attr.output = LTTNG_EVENT_SPLICE; |
a79d84dd DG |
217 | } else { |
218 | ERR("Unknown output type %s. Possible values are: %s, %s\n", | |
219 | opt_output, output_mmap, output_splice); | |
a79d84dd DG |
220 | ret = CMD_ERROR; |
221 | goto error; | |
222 | } | |
223 | } | |
224 | ||
cd80958d DG |
225 | handle = lttng_create_handle(session_name, &dom); |
226 | if (handle == NULL) { | |
227 | ret = -1; | |
228 | goto error; | |
229 | } | |
230 | ||
acc09215 JRJ |
231 | /* Mi open channels element */ |
232 | if (lttng_opt_mi) { | |
233 | assert(writer); | |
234 | ret = mi_lttng_channels_open(writer); | |
235 | if (ret) { | |
236 | ret = CMD_ERROR; | |
237 | goto error; | |
238 | } | |
239 | } | |
240 | ||
0fdd1e2c | 241 | /* Strip channel list (format: chan1,chan2,...) */ |
d36b8583 DG |
242 | channel_name = strtok(opt_channels, ","); |
243 | while (channel_name != NULL) { | |
cf0bcb51 JG |
244 | void *extended_ptr; |
245 | ||
1f345e94 PP |
246 | /* Validate channel name's length */ |
247 | if (strlen(channel_name) >= NAME_MAX) { | |
248 | ERR("Channel name is too long (max. %zu characters)", | |
cf0bcb51 | 249 | sizeof(chan_opts.name) - 1); |
1f345e94 PP |
250 | error = 1; |
251 | goto skip_enable; | |
252 | } | |
253 | ||
cf0bcb51 JG |
254 | /* |
255 | * A dynamically-allocated channel is used in order to allow | |
256 | * the configuration of extended attributes (post-2.9). | |
257 | */ | |
258 | channel = lttng_channel_create(&dom); | |
259 | if (!channel) { | |
260 | ERR("Unable to create channel object"); | |
261 | error = 1; | |
262 | goto error; | |
263 | } | |
264 | ||
1f345e94 | 265 | /* Copy channel name */ |
cf0bcb51 JG |
266 | strcpy(channel->name, channel_name); |
267 | channel->enabled = 1; | |
268 | extended_ptr = channel->attr.extended.ptr; | |
269 | memcpy(&channel->attr, &chan_opts.attr, sizeof(chan_opts.attr)); | |
270 | channel->attr.extended.ptr = extended_ptr; | |
271 | if (opt_monitor_timer.set) { | |
272 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
273 | opt_monitor_timer.interval); | |
274 | if (ret) { | |
275 | ERR("Failed to set the channel's monitor timer interval"); | |
276 | error = 1; | |
277 | goto error; | |
278 | } | |
279 | } | |
491d1539 MD |
280 | if (opt_blocking_timeout.set) { |
281 | ret = lttng_channel_set_blocking_timeout(channel, | |
282 | opt_blocking_timeout.value); | |
283 | if (ret) { | |
284 | ERR("Failed to set the channel's blocking timeout"); | |
285 | error = 1; | |
286 | goto error; | |
287 | } | |
288 | } | |
0fdd1e2c DG |
289 | |
290 | DBG("Enabling channel %s", channel_name); | |
291 | ||
cf0bcb51 | 292 | ret = lttng_enable_channel(handle, channel); |
0fdd1e2c | 293 | if (ret < 0) { |
acc09215 | 294 | success = 0; |
42224349 | 295 | switch (-ret) { |
f73fabfd DG |
296 | case LTTNG_ERR_KERN_CHAN_EXIST: |
297 | case LTTNG_ERR_UST_CHAN_EXIST: | |
b9dfb167 | 298 | case LTTNG_ERR_CHAN_EXIST: |
88c5f0d8 | 299 | WARN("Channel %s: %s (session %s)", channel_name, |
42224349 | 300 | lttng_strerror(ret), session_name); |
acc09215 JRJ |
301 | warn = 1; |
302 | break; | |
1f345e94 PP |
303 | case LTTNG_ERR_INVALID_CHANNEL_NAME: |
304 | ERR("Invalid channel name: \"%s\". " | |
305 | "Channel names may not start with '.', and " | |
306 | "may not contain '/'.", channel_name); | |
307 | error = 1; | |
308 | break; | |
42224349 DG |
309 | default: |
310 | ERR("Channel %s: %s (session %s)", channel_name, | |
311 | lttng_strerror(ret), session_name); | |
acc09215 | 312 | error = 1; |
42224349 DG |
313 | break; |
314 | } | |
d36b8583 | 315 | } else { |
7885e399 | 316 | MSG("%s channel %s enabled for session %s", |
b9dfb167 | 317 | get_domain_str(dom.type), channel_name, session_name); |
acc09215 JRJ |
318 | success = 1; |
319 | } | |
320 | ||
1f345e94 | 321 | skip_enable: |
acc09215 JRJ |
322 | if (lttng_opt_mi) { |
323 | /* Mi print the channel element and leave it open */ | |
cf0bcb51 | 324 | ret = mi_lttng_channel(writer, channel, 1); |
acc09215 JRJ |
325 | if (ret) { |
326 | ret = CMD_ERROR; | |
327 | goto error; | |
328 | } | |
329 | ||
330 | /* Individual Success ? */ | |
331 | ret = mi_lttng_writer_write_element_bool(writer, | |
332 | mi_lttng_element_command_success, success); | |
333 | if (ret) { | |
334 | ret = CMD_ERROR; | |
335 | goto error; | |
336 | } | |
337 | ||
338 | /* Close channel element */ | |
339 | ret = mi_lttng_writer_close_element(writer); | |
340 | if (ret) { | |
341 | ret = CMD_ERROR; | |
342 | goto error; | |
343 | } | |
d36b8583 DG |
344 | } |
345 | ||
acc09215 | 346 | /* Next channel */ |
d36b8583 | 347 | channel_name = strtok(NULL, ","); |
cf0bcb51 JG |
348 | lttng_channel_destroy(channel); |
349 | channel = NULL; | |
d36b8583 DG |
350 | } |
351 | ||
acc09215 JRJ |
352 | if (lttng_opt_mi) { |
353 | /* Close channels element */ | |
354 | ret = mi_lttng_writer_close_element(writer); | |
355 | if (ret) { | |
356 | ret = CMD_ERROR; | |
357 | goto error; | |
358 | } | |
359 | } | |
360 | ||
ae856491 DG |
361 | ret = CMD_SUCCESS; |
362 | ||
d36b8583 | 363 | error: |
cf0bcb51 JG |
364 | if (channel) { |
365 | lttng_channel_destroy(channel); | |
366 | } | |
acc09215 JRJ |
367 | /* If more important error happen bypass the warning */ |
368 | if (!ret && warn) { | |
ae856491 DG |
369 | ret = CMD_WARNING; |
370 | } | |
acc09215 JRJ |
371 | /* If more important error happen bypass the warning */ |
372 | if (!ret && error) { | |
373 | ret = CMD_ERROR; | |
374 | } | |
ae856491 | 375 | |
cd80958d DG |
376 | lttng_destroy_handle(handle); |
377 | ||
d36b8583 DG |
378 | return ret; |
379 | } | |
380 | ||
381 | /* | |
0fdd1e2c | 382 | * Default value for channel configuration. |
7d29a247 DG |
383 | */ |
384 | static void init_channel_config(void) | |
385 | { | |
5edd7e09 DG |
386 | /* |
387 | * Put -1 everywhere so we can identify those set by the command line and | |
388 | * those needed to be set by the default values. | |
389 | */ | |
cf0bcb51 JG |
390 | memset(&chan_opts.attr, -1, sizeof(chan_opts.attr)); |
391 | chan_opts.attr.extended.ptr = NULL; | |
7d29a247 DG |
392 | } |
393 | ||
394 | /* | |
0fdd1e2c | 395 | * Add channel to trace session |
d36b8583 DG |
396 | */ |
397 | int cmd_enable_channels(int argc, const char **argv) | |
398 | { | |
acc09215 | 399 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
d36b8583 | 400 | static poptContext pc; |
cd80958d | 401 | char *session_name = NULL; |
70d0b120 | 402 | char *opt_arg = NULL; |
d36b8583 | 403 | |
7d29a247 DG |
404 | init_channel_config(); |
405 | ||
d36b8583 DG |
406 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
407 | poptReadDefaultConfig(pc, 0); | |
408 | ||
409 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
410 | switch (opt) { | |
411 | case OPT_HELP: | |
4ba92f18 | 412 | SHOW_HELP(); |
d36b8583 | 413 | goto end; |
7d29a247 | 414 | case OPT_DISCARD: |
cf0bcb51 | 415 | chan_opts.attr.overwrite = 0; |
7d29a247 DG |
416 | DBG("Channel set to discard"); |
417 | break; | |
418 | case OPT_OVERWRITE: | |
cf0bcb51 | 419 | chan_opts.attr.overwrite = 1; |
7d29a247 DG |
420 | DBG("Channel set to overwrite"); |
421 | break; | |
422 | case OPT_SUBBUF_SIZE: | |
1cb514ce MD |
423 | { |
424 | uint64_t rounded_size; | |
425 | int order; | |
426 | ||
70d0b120 SM |
427 | /* Parse the size */ |
428 | opt_arg = poptGetOptArg(pc); | |
cf0bcb51 | 429 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.subbuf_size) < 0 || !chan_opts.attr.subbuf_size) { |
1cb514ce | 430 | ERR("Wrong value in --subbuf-size parameter: %s", opt_arg); |
70d0b120 SM |
431 | ret = CMD_ERROR; |
432 | goto end; | |
433 | } | |
434 | ||
cf0bcb51 | 435 | order = get_count_order_u64(chan_opts.attr.subbuf_size); |
1cb514ce MD |
436 | assert(order >= 0); |
437 | rounded_size = 1ULL << order; | |
cf0bcb51 | 438 | if (rounded_size < chan_opts.attr.subbuf_size) { |
06c0da96 | 439 | ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 440 | chan_opts.attr.subbuf_size); |
06c0da96 DG |
441 | ret = CMD_ERROR; |
442 | goto end; | |
443 | } | |
444 | ||
cf0bcb51 | 445 | if (rounded_size != chan_opts.attr.subbuf_size) { |
1cb514ce | 446 | WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
447 | chan_opts.attr.subbuf_size, rounded_size); |
448 | chan_opts.attr.subbuf_size = rounded_size; | |
70d0b120 SM |
449 | } |
450 | ||
1cb514ce | 451 | /* Should now be power of 2 */ |
cf0bcb51 | 452 | assert(!((chan_opts.attr.subbuf_size - 1) & chan_opts.attr.subbuf_size)); |
1cb514ce | 453 | |
cf0bcb51 | 454 | DBG("Channel subbuf size set to %" PRIu64, chan_opts.attr.subbuf_size); |
7d29a247 | 455 | break; |
1cb514ce | 456 | } |
7d29a247 | 457 | case OPT_NUM_SUBBUF: |
1cb514ce MD |
458 | { |
459 | uint64_t rounded_size; | |
460 | int order; | |
461 | ||
16068db5 | 462 | errno = 0; |
1cb514ce | 463 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 JG |
464 | chan_opts.attr.num_subbuf = strtoull(opt_arg, NULL, 0); |
465 | if (errno != 0 || !chan_opts.attr.num_subbuf || !isdigit(opt_arg[0])) { | |
1cb514ce | 466 | ERR("Wrong value in --num-subbuf parameter: %s", opt_arg); |
16068db5 MD |
467 | ret = CMD_ERROR; |
468 | goto end; | |
469 | } | |
470 | ||
cf0bcb51 | 471 | order = get_count_order_u64(chan_opts.attr.num_subbuf); |
1cb514ce MD |
472 | assert(order >= 0); |
473 | rounded_size = 1ULL << order; | |
cf0bcb51 | 474 | if (rounded_size < chan_opts.attr.num_subbuf) { |
06c0da96 | 475 | ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 476 | chan_opts.attr.num_subbuf); |
06c0da96 DG |
477 | ret = CMD_ERROR; |
478 | goto end; | |
479 | } | |
480 | ||
cf0bcb51 | 481 | if (rounded_size != chan_opts.attr.num_subbuf) { |
1cb514ce | 482 | WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
483 | chan_opts.attr.num_subbuf, rounded_size); |
484 | chan_opts.attr.num_subbuf = rounded_size; | |
1cb514ce MD |
485 | } |
486 | ||
487 | /* Should now be power of 2 */ | |
cf0bcb51 | 488 | assert(!((chan_opts.attr.num_subbuf - 1) & chan_opts.attr.num_subbuf)); |
1cb514ce | 489 | |
cf0bcb51 | 490 | DBG("Channel subbuf num set to %" PRIu64, chan_opts.attr.num_subbuf); |
7d29a247 | 491 | break; |
1cb514ce | 492 | } |
7d29a247 | 493 | case OPT_SWITCH_TIMER: |
16068db5 MD |
494 | { |
495 | unsigned long v; | |
496 | ||
497 | errno = 0; | |
1cb514ce MD |
498 | opt_arg = poptGetOptArg(pc); |
499 | v = strtoul(opt_arg, NULL, 0); | |
500 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
501 | ERR("Wrong value in --switch-timer parameter: %s", opt_arg); | |
16068db5 MD |
502 | ret = CMD_ERROR; |
503 | goto end; | |
504 | } | |
505 | if (v != (uint32_t) v) { | |
506 | ERR("32-bit overflow in --switch-timer parameter: %s", opt_arg); | |
507 | ret = CMD_ERROR; | |
508 | goto end; | |
509 | } | |
cf0bcb51 JG |
510 | chan_opts.attr.switch_timer_interval = (uint32_t) v; |
511 | DBG("Channel switch timer interval set to %d", chan_opts.attr.switch_timer_interval); | |
7d29a247 | 512 | break; |
16068db5 | 513 | } |
7d29a247 | 514 | case OPT_READ_TIMER: |
16068db5 MD |
515 | { |
516 | unsigned long v; | |
517 | ||
518 | errno = 0; | |
1cb514ce MD |
519 | opt_arg = poptGetOptArg(pc); |
520 | v = strtoul(opt_arg, NULL, 0); | |
521 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
522 | ERR("Wrong value in --read-timer parameter: %s", opt_arg); | |
16068db5 MD |
523 | ret = CMD_ERROR; |
524 | goto end; | |
525 | } | |
526 | if (v != (uint32_t) v) { | |
527 | ERR("32-bit overflow in --read-timer parameter: %s", opt_arg); | |
528 | ret = CMD_ERROR; | |
529 | goto end; | |
530 | } | |
cf0bcb51 JG |
531 | chan_opts.attr.read_timer_interval = (uint32_t) v; |
532 | DBG("Channel read timer interval set to %d", chan_opts.attr.read_timer_interval); | |
533 | break; | |
534 | } | |
535 | case OPT_MONITOR_TIMER: | |
536 | { | |
8193ef17 | 537 | unsigned long long v; |
cf0bcb51 JG |
538 | |
539 | errno = 0; | |
540 | opt_arg = poptGetOptArg(pc); | |
8193ef17 | 541 | v = strtoull(opt_arg, NULL, 0); |
cf0bcb51 JG |
542 | if (errno != 0 || !isdigit(opt_arg[0])) { |
543 | ERR("Wrong value in --monitor-timer parameter: %s", opt_arg); | |
544 | ret = CMD_ERROR; | |
545 | goto end; | |
546 | } | |
8193ef17 | 547 | opt_monitor_timer.interval = (uint64_t) v; |
cf0bcb51 | 548 | opt_monitor_timer.set = true; |
8193ef17 | 549 | DBG("Channel monitor timer interval set to %" PRIu64" (µs)", opt_monitor_timer.interval); |
d36b8583 | 550 | break; |
16068db5 | 551 | } |
491d1539 MD |
552 | case OPT_BLOCKING_TIMEOUT: |
553 | { | |
554 | long long v; /* in usec */ | |
555 | long long v_msec; | |
556 | ||
557 | errno = 0; | |
558 | opt_arg = poptGetOptArg(pc); | |
63dd9b28 PP |
559 | |
560 | if (strcmp(opt_arg, "inf") == 0) { | |
561 | opt_blocking_timeout.value = (int64_t) -1; | |
562 | opt_blocking_timeout.set = true; | |
563 | DBG("Channel blocking timeout set to infinity"); | |
564 | break; | |
565 | } | |
566 | ||
491d1539 MD |
567 | v = strtoll(opt_arg, NULL, 0); |
568 | if (errno != 0 || (!isdigit(opt_arg[0]) && opt_arg[0] != '-') | |
63dd9b28 | 569 | || v < 0) { |
491d1539 MD |
570 | ERR("Wrong value in --blocking-timeout parameter: %s", opt_arg); |
571 | ret = CMD_ERROR; | |
572 | goto end; | |
573 | } | |
63dd9b28 PP |
574 | |
575 | /* | |
576 | * While LTTng-UST and LTTng-tools will accept a | |
577 | * blocking timeout expressed in µs, the current | |
578 | * tracer implementation relies on poll() which | |
579 | * takes an "int timeout" parameter expressed in | |
580 | * msec. | |
581 | * | |
582 | * Since the error reporting from the tracer is | |
583 | * not precise, we perform this check here to | |
584 | * provide a helpful error message in case of | |
585 | * overflow. | |
586 | * | |
587 | * The setter (liblttng-ctl) also performs an | |
588 | * equivalent check. | |
589 | */ | |
590 | v_msec = v / 1000; | |
591 | if (v_msec != (int32_t) v_msec) { | |
592 | ERR("32-bit milliseconds overflow in --blocking-timeout parameter: %s", opt_arg); | |
593 | ret = CMD_ERROR; | |
594 | goto end; | |
491d1539 | 595 | } |
63dd9b28 | 596 | |
491d1539 MD |
597 | opt_blocking_timeout.value = (int64_t) v; |
598 | opt_blocking_timeout.set = true; | |
63dd9b28 PP |
599 | DBG("Channel blocking timeout set to %" PRId64 " µs%s", |
600 | opt_blocking_timeout.value, | |
601 | opt_blocking_timeout.value == 0 ? | |
602 | " (non-blocking)" : ""); | |
491d1539 MD |
603 | break; |
604 | } | |
eeac7d46 MD |
605 | case OPT_USERSPACE: |
606 | opt_userspace = 1; | |
eeac7d46 | 607 | break; |
1624d5b7 | 608 | case OPT_TRACEFILE_SIZE: |
1cb514ce | 609 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 | 610 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.tracefile_size) < 0) { |
1cb514ce | 611 | ERR("Wrong value in --tracefile-size parameter: %s", opt_arg); |
16068db5 MD |
612 | ret = CMD_ERROR; |
613 | goto end; | |
614 | } | |
1624d5b7 | 615 | DBG("Maximum tracefile size set to %" PRIu64, |
cf0bcb51 | 616 | chan_opts.attr.tracefile_size); |
1624d5b7 JD |
617 | break; |
618 | case OPT_TRACEFILE_COUNT: | |
16068db5 MD |
619 | { |
620 | unsigned long v; | |
621 | ||
622 | errno = 0; | |
1cb514ce MD |
623 | opt_arg = poptGetOptArg(pc); |
624 | v = strtoul(opt_arg, NULL, 0); | |
625 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
626 | ERR("Wrong value in --tracefile-count parameter: %s", opt_arg); | |
16068db5 MD |
627 | ret = CMD_ERROR; |
628 | goto end; | |
629 | } | |
630 | if (v != (uint32_t) v) { | |
631 | ERR("32-bit overflow in --tracefile-count parameter: %s", opt_arg); | |
632 | ret = CMD_ERROR; | |
633 | goto end; | |
634 | } | |
cf0bcb51 | 635 | chan_opts.attr.tracefile_count = (uint32_t) v; |
1624d5b7 | 636 | DBG("Maximum tracefile count set to %" PRIu64, |
cf0bcb51 | 637 | chan_opts.attr.tracefile_count); |
1624d5b7 | 638 | break; |
16068db5 | 639 | } |
679b4943 SM |
640 | case OPT_LIST_OPTIONS: |
641 | list_cmd_options(stdout, long_options); | |
679b4943 | 642 | goto end; |
d36b8583 | 643 | default: |
d36b8583 DG |
644 | ret = CMD_UNDEFINED; |
645 | goto end; | |
646 | } | |
647 | } | |
648 | ||
3ecec76a PP |
649 | ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace); |
650 | if (ret) { | |
651 | ret = CMD_ERROR; | |
652 | goto end; | |
653 | } | |
654 | ||
ea10baf2 PP |
655 | if (chan_opts.attr.overwrite == 1 && opt_blocking_timeout.set && |
656 | opt_blocking_timeout.value != 0) { | |
657 | ERR("You cannot specify --overwrite and --blocking-timeout=N, " | |
658 | "where N is different than 0"); | |
659 | ret = CMD_ERROR; | |
660 | goto end; | |
661 | } | |
662 | ||
acc09215 JRJ |
663 | /* Mi check */ |
664 | if (lttng_opt_mi) { | |
665 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
666 | if (!writer) { | |
667 | ret = -LTTNG_ERR_NOMEM; | |
668 | goto end; | |
669 | } | |
670 | ||
671 | /* Open command element */ | |
672 | ret = mi_lttng_writer_command_open(writer, | |
673 | mi_lttng_element_command_enable_channels); | |
674 | if (ret) { | |
675 | ret = CMD_ERROR; | |
676 | goto end; | |
677 | } | |
678 | ||
679 | /* Open output element */ | |
680 | ret = mi_lttng_writer_open_element(writer, | |
681 | mi_lttng_element_command_output); | |
682 | if (ret) { | |
683 | ret = CMD_ERROR; | |
684 | goto end; | |
685 | } | |
686 | } | |
687 | ||
d36b8583 DG |
688 | opt_channels = (char*) poptGetArg(pc); |
689 | if (opt_channels == NULL) { | |
7d29a247 | 690 | ERR("Missing channel name.\n"); |
ca1c3607 | 691 | ret = CMD_ERROR; |
acc09215 JRJ |
692 | success = 0; |
693 | goto mi_closing; | |
d36b8583 DG |
694 | } |
695 | ||
cd80958d DG |
696 | if (!opt_session_name) { |
697 | session_name = get_session_name(); | |
698 | if (session_name == NULL) { | |
acc09215 JRJ |
699 | command_ret = CMD_ERROR; |
700 | success = 0; | |
701 | goto mi_closing; | |
cd80958d DG |
702 | } |
703 | } else { | |
704 | session_name = opt_session_name; | |
705 | } | |
706 | ||
acc09215 JRJ |
707 | command_ret = enable_channel(session_name); |
708 | if (command_ret) { | |
709 | success = 0; | |
710 | } | |
711 | ||
712 | mi_closing: | |
713 | /* Mi closing */ | |
714 | if (lttng_opt_mi) { | |
715 | /* Close output element */ | |
716 | ret = mi_lttng_writer_close_element(writer); | |
717 | if (ret) { | |
718 | goto end; | |
719 | } | |
720 | ||
721 | /* Success ? */ | |
722 | ret = mi_lttng_writer_write_element_bool(writer, | |
723 | mi_lttng_element_command_success, success); | |
724 | if (ret) { | |
725 | goto end; | |
726 | } | |
727 | ||
728 | /* Command element close */ | |
729 | ret = mi_lttng_writer_command_close(writer); | |
730 | if (ret) { | |
731 | goto end; | |
732 | } | |
733 | } | |
d36b8583 DG |
734 | |
735 | end: | |
acc09215 JRJ |
736 | /* Mi clean-up */ |
737 | if (writer && mi_lttng_writer_destroy(writer)) { | |
738 | /* Preserve original error code */ | |
739 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
740 | } | |
741 | ||
5853fd43 DG |
742 | if (!opt_session_name && session_name) { |
743 | free(session_name); | |
744 | } | |
acc09215 JRJ |
745 | |
746 | /* Overwrite ret if an error occurred when enable_channel */ | |
747 | ret = command_ret ? command_ret : ret; | |
ca1c3607 | 748 | poptFreeContext(pc); |
d36b8583 DG |
749 | return ret; |
750 | } |