Commit | Line | Data |
---|---|---|
d36b8583 | 1 | /* |
a4eb26f0 | 2 | * Copyright (C) 2011 EfficiOS Inc. |
d36b8583 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
d36b8583 | 5 | * |
d36b8583 DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
d36b8583 DG |
9 | #include <popt.h> |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <sys/stat.h> | |
14 | #include <sys/types.h> | |
15 | #include <unistd.h> | |
5a0de755 | 16 | #include <inttypes.h> |
1cb514ce MD |
17 | #include <assert.h> |
18 | #include <ctype.h> | |
d36b8583 | 19 | |
acc09215 JRJ |
20 | #include <common/sessiond-comm/sessiond-comm.h> |
21 | #include <common/utils.h> | |
22 | #include <common/mi-lttng.h> | |
23 | ||
c399183f | 24 | #include "../command.h" |
1cb514ce | 25 | #include "../utils.h" |
d36b8583 | 26 | |
42224349 | 27 | |
cf0bcb51 | 28 | static struct lttng_channel chan_opts; |
5edd7e09 | 29 | static int opt_kernel; |
5440dc42 | 30 | static char *opt_session_name; |
d36b8583 | 31 | static int opt_userspace; |
a79d84dd | 32 | static char *opt_output; |
7972aab2 DG |
33 | static int opt_buffer_uid; |
34 | static int opt_buffer_pid; | |
35 | static int opt_buffer_global; | |
cf0bcb51 JG |
36 | static struct { |
37 | bool set; | |
8193ef17 | 38 | uint64_t interval; |
cf0bcb51 | 39 | } opt_monitor_timer; |
491d1539 MD |
40 | static struct { |
41 | bool set; | |
42 | int64_t value; | |
43 | } opt_blocking_timeout; | |
d36b8583 | 44 | |
acc09215 JRJ |
45 | static struct mi_writer *writer; |
46 | ||
4fc83d94 PP |
47 | #ifdef LTTNG_EMBED_HELP |
48 | static const char help_msg[] = | |
49 | #include <lttng-enable-channel.1.h> | |
50 | ; | |
51 | #endif | |
52 | ||
d36b8583 DG |
53 | enum { |
54 | OPT_HELP = 1, | |
7d29a247 DG |
55 | OPT_DISCARD, |
56 | OPT_OVERWRITE, | |
57 | OPT_SUBBUF_SIZE, | |
58 | OPT_NUM_SUBBUF, | |
59 | OPT_SWITCH_TIMER, | |
cf0bcb51 | 60 | OPT_MONITOR_TIMER, |
7d29a247 | 61 | OPT_READ_TIMER, |
d36b8583 | 62 | OPT_USERSPACE, |
679b4943 | 63 | OPT_LIST_OPTIONS, |
1624d5b7 JD |
64 | OPT_TRACEFILE_SIZE, |
65 | OPT_TRACEFILE_COUNT, | |
491d1539 | 66 | OPT_BLOCKING_TIMEOUT, |
d36b8583 DG |
67 | }; |
68 | ||
cd80958d DG |
69 | static struct lttng_handle *handle; |
70 | ||
a79d84dd DG |
71 | const char *output_mmap = "mmap"; |
72 | const char *output_splice = "splice"; | |
73 | ||
d36b8583 DG |
74 | static struct poptOption long_options[] = { |
75 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
76 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 77 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
d36b8583 | 78 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 | 79 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
7d29a247 DG |
80 | {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0}, |
81 | {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0}, | |
70d0b120 | 82 | {"subbuf-size", 0, POPT_ARG_STRING, 0, OPT_SUBBUF_SIZE, 0, 0}, |
1b579521 DG |
83 | {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0}, |
84 | {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0}, | |
cf0bcb51 | 85 | {"monitor-timer", 0, POPT_ARG_INT, 0, OPT_MONITOR_TIMER, 0, 0}, |
1b579521 | 86 | {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0}, |
679b4943 | 87 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
a79d84dd | 88 | {"output", 0, POPT_ARG_STRING, &opt_output, 0, 0, 0}, |
7972aab2 DG |
89 | {"buffers-uid", 0, POPT_ARG_VAL, &opt_buffer_uid, 1, 0, 0}, |
90 | {"buffers-pid", 0, POPT_ARG_VAL, &opt_buffer_pid, 1, 0, 0}, | |
91 | {"buffers-global", 0, POPT_ARG_VAL, &opt_buffer_global, 1, 0, 0}, | |
1624d5b7 JD |
92 | {"tracefile-size", 'C', POPT_ARG_INT, 0, OPT_TRACEFILE_SIZE, 0, 0}, |
93 | {"tracefile-count", 'W', POPT_ARG_INT, 0, OPT_TRACEFILE_COUNT, 0, 0}, | |
491d1539 | 94 | {"blocking-timeout", 0, POPT_ARG_INT, 0, OPT_BLOCKING_TIMEOUT, 0, 0}, |
d36b8583 DG |
95 | {0, 0, 0, 0, 0, 0, 0} |
96 | }; | |
97 | ||
5edd7e09 DG |
98 | /* |
99 | * Set default attributes depending on those already defined from the command | |
100 | * line. | |
101 | */ | |
102 | static void set_default_attr(struct lttng_domain *dom) | |
103 | { | |
104 | struct lttng_channel_attr default_attr; | |
105 | ||
c1e4642c JG |
106 | memset(&default_attr, 0, sizeof(default_attr)); |
107 | ||
5edd7e09 DG |
108 | /* Set attributes */ |
109 | lttng_channel_set_default_attr(dom, &default_attr); | |
110 | ||
cf0bcb51 JG |
111 | if (chan_opts.attr.overwrite == -1) { |
112 | chan_opts.attr.overwrite = default_attr.overwrite; | |
5edd7e09 | 113 | } |
cf0bcb51 JG |
114 | if (chan_opts.attr.subbuf_size == -1) { |
115 | chan_opts.attr.subbuf_size = default_attr.subbuf_size; | |
5edd7e09 | 116 | } |
cf0bcb51 JG |
117 | if (chan_opts.attr.num_subbuf == -1) { |
118 | chan_opts.attr.num_subbuf = default_attr.num_subbuf; | |
5edd7e09 | 119 | } |
cf0bcb51 JG |
120 | if (chan_opts.attr.switch_timer_interval == -1) { |
121 | chan_opts.attr.switch_timer_interval = default_attr.switch_timer_interval; | |
5edd7e09 | 122 | } |
cf0bcb51 JG |
123 | if (chan_opts.attr.read_timer_interval == -1) { |
124 | chan_opts.attr.read_timer_interval = default_attr.read_timer_interval; | |
5edd7e09 | 125 | } |
cf0bcb51 JG |
126 | if ((int) chan_opts.attr.output == -1) { |
127 | chan_opts.attr.output = default_attr.output; | |
5edd7e09 | 128 | } |
cf0bcb51 JG |
129 | if (chan_opts.attr.tracefile_count == -1) { |
130 | chan_opts.attr.tracefile_count = default_attr.tracefile_count; | |
1624d5b7 | 131 | } |
cf0bcb51 JG |
132 | if (chan_opts.attr.tracefile_size == -1) { |
133 | chan_opts.attr.tracefile_size = default_attr.tracefile_size; | |
1624d5b7 | 134 | } |
5edd7e09 DG |
135 | } |
136 | ||
d36b8583 | 137 | /* |
0fdd1e2c | 138 | * Adding channel using the lttng API. |
d36b8583 | 139 | */ |
d569ed5f | 140 | static int enable_channel(char *session_name, char *channel_list) |
d36b8583 | 141 | { |
cf0bcb51 | 142 | struct lttng_channel *channel = NULL; |
acc09215 | 143 | int ret = CMD_SUCCESS, warn = 0, error = 0, success = 0; |
d36b8583 | 144 | char *channel_name; |
7d29a247 | 145 | struct lttng_domain dom; |
d36b8583 | 146 | |
441c16a7 MD |
147 | memset(&dom, 0, sizeof(dom)); |
148 | ||
491d1539 MD |
149 | /* Validate options. */ |
150 | if (opt_kernel) { | |
151 | if (opt_blocking_timeout.set) { | |
152 | ERR("Retry timeout option not supported for kernel domain (-k)"); | |
153 | ret = CMD_ERROR; | |
154 | goto error; | |
155 | } | |
156 | } | |
157 | ||
d78d6610 | 158 | /* Create lttng domain */ |
7d29a247 DG |
159 | if (opt_kernel) { |
160 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 161 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
88c5f0d8 DG |
162 | if (opt_buffer_uid || opt_buffer_pid) { |
163 | ERR("Buffer type not supported for domain -k"); | |
164 | ret = CMD_ERROR; | |
165 | goto error; | |
166 | } | |
d78d6610 | 167 | } else if (opt_userspace) { |
f6a9efaa | 168 | dom.type = LTTNG_DOMAIN_UST; |
8692d4e5 DG |
169 | if (opt_buffer_pid) { |
170 | dom.buf_type = LTTNG_BUFFER_PER_PID; | |
7972aab2 | 171 | } else { |
88c5f0d8 DG |
172 | if (opt_buffer_global) { |
173 | ERR("Buffer type not supported for domain -u"); | |
174 | ret = CMD_ERROR; | |
175 | goto error; | |
176 | } | |
8692d4e5 | 177 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
7972aab2 | 178 | } |
0fdd1e2c | 179 | } else { |
3ecec76a PP |
180 | /* Checked by the caller. */ |
181 | assert(0); | |
7d29a247 DG |
182 | } |
183 | ||
5edd7e09 DG |
184 | set_default_attr(&dom); |
185 | ||
cf0bcb51 | 186 | if (chan_opts.attr.tracefile_size == 0 && chan_opts.attr.tracefile_count) { |
d16dee89 DG |
187 | ERR("Missing option --tracefile-size. " |
188 | "A file count without a size won't do anything."); | |
189 | ret = CMD_ERROR; | |
190 | goto error; | |
191 | } | |
192 | ||
cf0bcb51 JG |
193 | if ((chan_opts.attr.tracefile_size > 0) && |
194 | (chan_opts.attr.tracefile_size < chan_opts.attr.subbuf_size)) { | |
de65565a | 195 | WARN("Tracefile size rounded up from (%" PRIu64 ") to subbuffer size (%" PRIu64 ")", |
cf0bcb51 JG |
196 | chan_opts.attr.tracefile_size, chan_opts.attr.subbuf_size); |
197 | chan_opts.attr.tracefile_size = chan_opts.attr.subbuf_size; | |
1624d5b7 JD |
198 | } |
199 | ||
a79d84dd DG |
200 | /* Setting channel output */ |
201 | if (opt_output) { | |
202 | if (!strncmp(output_mmap, opt_output, strlen(output_mmap))) { | |
cf0bcb51 | 203 | chan_opts.attr.output = LTTNG_EVENT_MMAP; |
a79d84dd | 204 | } else if (!strncmp(output_splice, opt_output, strlen(output_splice))) { |
cf0bcb51 | 205 | chan_opts.attr.output = LTTNG_EVENT_SPLICE; |
a79d84dd DG |
206 | } else { |
207 | ERR("Unknown output type %s. Possible values are: %s, %s\n", | |
208 | opt_output, output_mmap, output_splice); | |
a79d84dd DG |
209 | ret = CMD_ERROR; |
210 | goto error; | |
211 | } | |
212 | } | |
213 | ||
cd80958d DG |
214 | handle = lttng_create_handle(session_name, &dom); |
215 | if (handle == NULL) { | |
216 | ret = -1; | |
217 | goto error; | |
218 | } | |
219 | ||
acc09215 JRJ |
220 | /* Mi open channels element */ |
221 | if (lttng_opt_mi) { | |
222 | assert(writer); | |
223 | ret = mi_lttng_channels_open(writer); | |
224 | if (ret) { | |
225 | ret = CMD_ERROR; | |
226 | goto error; | |
227 | } | |
228 | } | |
229 | ||
0fdd1e2c | 230 | /* Strip channel list (format: chan1,chan2,...) */ |
d569ed5f | 231 | channel_name = strtok(channel_list, ","); |
d36b8583 | 232 | while (channel_name != NULL) { |
cf0bcb51 JG |
233 | void *extended_ptr; |
234 | ||
1f345e94 | 235 | /* Validate channel name's length */ |
d6a6a609 | 236 | if (strlen(channel_name) >= sizeof(chan_opts.name)) { |
1f345e94 | 237 | ERR("Channel name is too long (max. %zu characters)", |
cf0bcb51 | 238 | sizeof(chan_opts.name) - 1); |
1f345e94 PP |
239 | error = 1; |
240 | goto skip_enable; | |
241 | } | |
242 | ||
cf0bcb51 JG |
243 | /* |
244 | * A dynamically-allocated channel is used in order to allow | |
245 | * the configuration of extended attributes (post-2.9). | |
246 | */ | |
247 | channel = lttng_channel_create(&dom); | |
248 | if (!channel) { | |
249 | ERR("Unable to create channel object"); | |
250 | error = 1; | |
251 | goto error; | |
252 | } | |
253 | ||
1f345e94 | 254 | /* Copy channel name */ |
cf0bcb51 JG |
255 | strcpy(channel->name, channel_name); |
256 | channel->enabled = 1; | |
257 | extended_ptr = channel->attr.extended.ptr; | |
258 | memcpy(&channel->attr, &chan_opts.attr, sizeof(chan_opts.attr)); | |
259 | channel->attr.extended.ptr = extended_ptr; | |
260 | if (opt_monitor_timer.set) { | |
261 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
262 | opt_monitor_timer.interval); | |
263 | if (ret) { | |
264 | ERR("Failed to set the channel's monitor timer interval"); | |
265 | error = 1; | |
266 | goto error; | |
267 | } | |
268 | } | |
491d1539 MD |
269 | if (opt_blocking_timeout.set) { |
270 | ret = lttng_channel_set_blocking_timeout(channel, | |
271 | opt_blocking_timeout.value); | |
272 | if (ret) { | |
273 | ERR("Failed to set the channel's blocking timeout"); | |
274 | error = 1; | |
275 | goto error; | |
276 | } | |
277 | } | |
0fdd1e2c DG |
278 | |
279 | DBG("Enabling channel %s", channel_name); | |
280 | ||
cf0bcb51 | 281 | ret = lttng_enable_channel(handle, channel); |
0fdd1e2c | 282 | if (ret < 0) { |
acc09215 | 283 | success = 0; |
42224349 | 284 | switch (-ret) { |
f73fabfd DG |
285 | case LTTNG_ERR_KERN_CHAN_EXIST: |
286 | case LTTNG_ERR_UST_CHAN_EXIST: | |
b9dfb167 | 287 | case LTTNG_ERR_CHAN_EXIST: |
88c5f0d8 | 288 | WARN("Channel %s: %s (session %s)", channel_name, |
42224349 | 289 | lttng_strerror(ret), session_name); |
acc09215 JRJ |
290 | warn = 1; |
291 | break; | |
1f345e94 PP |
292 | case LTTNG_ERR_INVALID_CHANNEL_NAME: |
293 | ERR("Invalid channel name: \"%s\". " | |
294 | "Channel names may not start with '.', and " | |
295 | "may not contain '/'.", channel_name); | |
296 | error = 1; | |
297 | break; | |
42224349 DG |
298 | default: |
299 | ERR("Channel %s: %s (session %s)", channel_name, | |
300 | lttng_strerror(ret), session_name); | |
acc09215 | 301 | error = 1; |
42224349 DG |
302 | break; |
303 | } | |
d36b8583 | 304 | } else { |
7885e399 | 305 | MSG("%s channel %s enabled for session %s", |
b9dfb167 | 306 | get_domain_str(dom.type), channel_name, session_name); |
acc09215 JRJ |
307 | success = 1; |
308 | } | |
309 | ||
1f345e94 | 310 | skip_enable: |
acc09215 JRJ |
311 | if (lttng_opt_mi) { |
312 | /* Mi print the channel element and leave it open */ | |
cf0bcb51 | 313 | ret = mi_lttng_channel(writer, channel, 1); |
acc09215 JRJ |
314 | if (ret) { |
315 | ret = CMD_ERROR; | |
316 | goto error; | |
317 | } | |
318 | ||
319 | /* Individual Success ? */ | |
320 | ret = mi_lttng_writer_write_element_bool(writer, | |
321 | mi_lttng_element_command_success, success); | |
322 | if (ret) { | |
323 | ret = CMD_ERROR; | |
324 | goto error; | |
325 | } | |
326 | ||
327 | /* Close channel element */ | |
328 | ret = mi_lttng_writer_close_element(writer); | |
329 | if (ret) { | |
330 | ret = CMD_ERROR; | |
331 | goto error; | |
332 | } | |
d36b8583 DG |
333 | } |
334 | ||
acc09215 | 335 | /* Next channel */ |
d36b8583 | 336 | channel_name = strtok(NULL, ","); |
cf0bcb51 JG |
337 | lttng_channel_destroy(channel); |
338 | channel = NULL; | |
d36b8583 DG |
339 | } |
340 | ||
acc09215 JRJ |
341 | if (lttng_opt_mi) { |
342 | /* Close channels element */ | |
343 | ret = mi_lttng_writer_close_element(writer); | |
344 | if (ret) { | |
345 | ret = CMD_ERROR; | |
346 | goto error; | |
347 | } | |
348 | } | |
349 | ||
ae856491 DG |
350 | ret = CMD_SUCCESS; |
351 | ||
d36b8583 | 352 | error: |
cf0bcb51 JG |
353 | if (channel) { |
354 | lttng_channel_destroy(channel); | |
355 | } | |
acc09215 JRJ |
356 | /* If more important error happen bypass the warning */ |
357 | if (!ret && warn) { | |
ae856491 DG |
358 | ret = CMD_WARNING; |
359 | } | |
acc09215 JRJ |
360 | /* If more important error happen bypass the warning */ |
361 | if (!ret && error) { | |
362 | ret = CMD_ERROR; | |
363 | } | |
ae856491 | 364 | |
cd80958d DG |
365 | lttng_destroy_handle(handle); |
366 | ||
d36b8583 DG |
367 | return ret; |
368 | } | |
369 | ||
370 | /* | |
0fdd1e2c | 371 | * Default value for channel configuration. |
7d29a247 DG |
372 | */ |
373 | static void init_channel_config(void) | |
374 | { | |
5edd7e09 DG |
375 | /* |
376 | * Put -1 everywhere so we can identify those set by the command line and | |
377 | * those needed to be set by the default values. | |
378 | */ | |
cf0bcb51 JG |
379 | memset(&chan_opts.attr, -1, sizeof(chan_opts.attr)); |
380 | chan_opts.attr.extended.ptr = NULL; | |
7d29a247 DG |
381 | } |
382 | ||
383 | /* | |
0fdd1e2c | 384 | * Add channel to trace session |
d36b8583 DG |
385 | */ |
386 | int cmd_enable_channels(int argc, const char **argv) | |
387 | { | |
acc09215 | 388 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
d36b8583 | 389 | static poptContext pc; |
cd80958d | 390 | char *session_name = NULL; |
d569ed5f | 391 | char *channel_list = NULL; |
70d0b120 | 392 | char *opt_arg = NULL; |
d569ed5f | 393 | const char *arg_channel_list = NULL; |
68c7f6e5 | 394 | const char *leftover = NULL; |
d36b8583 | 395 | |
7d29a247 DG |
396 | init_channel_config(); |
397 | ||
d36b8583 DG |
398 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
399 | poptReadDefaultConfig(pc, 0); | |
400 | ||
401 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
402 | switch (opt) { | |
403 | case OPT_HELP: | |
4ba92f18 | 404 | SHOW_HELP(); |
d36b8583 | 405 | goto end; |
7d29a247 | 406 | case OPT_DISCARD: |
cf0bcb51 | 407 | chan_opts.attr.overwrite = 0; |
7d29a247 DG |
408 | DBG("Channel set to discard"); |
409 | break; | |
410 | case OPT_OVERWRITE: | |
cf0bcb51 | 411 | chan_opts.attr.overwrite = 1; |
7d29a247 DG |
412 | DBG("Channel set to overwrite"); |
413 | break; | |
414 | case OPT_SUBBUF_SIZE: | |
1cb514ce MD |
415 | { |
416 | uint64_t rounded_size; | |
417 | int order; | |
418 | ||
70d0b120 SM |
419 | /* Parse the size */ |
420 | opt_arg = poptGetOptArg(pc); | |
cf0bcb51 | 421 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.subbuf_size) < 0 || !chan_opts.attr.subbuf_size) { |
1cb514ce | 422 | ERR("Wrong value in --subbuf-size parameter: %s", opt_arg); |
70d0b120 SM |
423 | ret = CMD_ERROR; |
424 | goto end; | |
425 | } | |
426 | ||
cf0bcb51 | 427 | order = get_count_order_u64(chan_opts.attr.subbuf_size); |
1cb514ce MD |
428 | assert(order >= 0); |
429 | rounded_size = 1ULL << order; | |
cf0bcb51 | 430 | if (rounded_size < chan_opts.attr.subbuf_size) { |
06c0da96 | 431 | ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 432 | chan_opts.attr.subbuf_size); |
06c0da96 DG |
433 | ret = CMD_ERROR; |
434 | goto end; | |
435 | } | |
436 | ||
cf0bcb51 | 437 | if (rounded_size != chan_opts.attr.subbuf_size) { |
1cb514ce | 438 | WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
439 | chan_opts.attr.subbuf_size, rounded_size); |
440 | chan_opts.attr.subbuf_size = rounded_size; | |
70d0b120 SM |
441 | } |
442 | ||
1cb514ce | 443 | /* Should now be power of 2 */ |
cf0bcb51 | 444 | assert(!((chan_opts.attr.subbuf_size - 1) & chan_opts.attr.subbuf_size)); |
1cb514ce | 445 | |
cf0bcb51 | 446 | DBG("Channel subbuf size set to %" PRIu64, chan_opts.attr.subbuf_size); |
7d29a247 | 447 | break; |
1cb514ce | 448 | } |
7d29a247 | 449 | case OPT_NUM_SUBBUF: |
1cb514ce MD |
450 | { |
451 | uint64_t rounded_size; | |
452 | int order; | |
453 | ||
16068db5 | 454 | errno = 0; |
1cb514ce | 455 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 JG |
456 | chan_opts.attr.num_subbuf = strtoull(opt_arg, NULL, 0); |
457 | if (errno != 0 || !chan_opts.attr.num_subbuf || !isdigit(opt_arg[0])) { | |
1cb514ce | 458 | ERR("Wrong value in --num-subbuf parameter: %s", opt_arg); |
16068db5 MD |
459 | ret = CMD_ERROR; |
460 | goto end; | |
461 | } | |
462 | ||
cf0bcb51 | 463 | order = get_count_order_u64(chan_opts.attr.num_subbuf); |
1cb514ce MD |
464 | assert(order >= 0); |
465 | rounded_size = 1ULL << order; | |
cf0bcb51 | 466 | if (rounded_size < chan_opts.attr.num_subbuf) { |
06c0da96 | 467 | ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 468 | chan_opts.attr.num_subbuf); |
06c0da96 DG |
469 | ret = CMD_ERROR; |
470 | goto end; | |
471 | } | |
472 | ||
cf0bcb51 | 473 | if (rounded_size != chan_opts.attr.num_subbuf) { |
1cb514ce | 474 | WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
475 | chan_opts.attr.num_subbuf, rounded_size); |
476 | chan_opts.attr.num_subbuf = rounded_size; | |
1cb514ce MD |
477 | } |
478 | ||
479 | /* Should now be power of 2 */ | |
cf0bcb51 | 480 | assert(!((chan_opts.attr.num_subbuf - 1) & chan_opts.attr.num_subbuf)); |
1cb514ce | 481 | |
cf0bcb51 | 482 | DBG("Channel subbuf num set to %" PRIu64, chan_opts.attr.num_subbuf); |
7d29a247 | 483 | break; |
1cb514ce | 484 | } |
7d29a247 | 485 | case OPT_SWITCH_TIMER: |
16068db5 | 486 | { |
c7219617 | 487 | uint64_t v; |
16068db5 MD |
488 | |
489 | errno = 0; | |
1cb514ce | 490 | opt_arg = poptGetOptArg(pc); |
c7219617 SM |
491 | |
492 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
493 | ERR("Wrong value for --switch-timer parameter: %s", opt_arg); | |
16068db5 MD |
494 | ret = CMD_ERROR; |
495 | goto end; | |
496 | } | |
c7219617 | 497 | |
16068db5 MD |
498 | if (v != (uint32_t) v) { |
499 | ERR("32-bit overflow in --switch-timer parameter: %s", opt_arg); | |
500 | ret = CMD_ERROR; | |
501 | goto end; | |
502 | } | |
cf0bcb51 | 503 | chan_opts.attr.switch_timer_interval = (uint32_t) v; |
2a1135fa JG |
504 | DBG("Channel switch timer interval set to %d %s", |
505 | chan_opts.attr.switch_timer_interval, | |
506 | USEC_UNIT); | |
7d29a247 | 507 | break; |
16068db5 | 508 | } |
7d29a247 | 509 | case OPT_READ_TIMER: |
16068db5 | 510 | { |
c7219617 | 511 | uint64_t v; |
16068db5 MD |
512 | |
513 | errno = 0; | |
1cb514ce | 514 | opt_arg = poptGetOptArg(pc); |
c7219617 SM |
515 | |
516 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
517 | ERR("Wrong value for --read-timer parameter: %s", opt_arg); | |
16068db5 MD |
518 | ret = CMD_ERROR; |
519 | goto end; | |
520 | } | |
c7219617 | 521 | |
16068db5 MD |
522 | if (v != (uint32_t) v) { |
523 | ERR("32-bit overflow in --read-timer parameter: %s", opt_arg); | |
524 | ret = CMD_ERROR; | |
525 | goto end; | |
526 | } | |
cf0bcb51 | 527 | chan_opts.attr.read_timer_interval = (uint32_t) v; |
2a1135fa JG |
528 | DBG("Channel read timer interval set to %d %s", |
529 | chan_opts.attr.read_timer_interval, | |
530 | USEC_UNIT); | |
cf0bcb51 JG |
531 | break; |
532 | } | |
533 | case OPT_MONITOR_TIMER: | |
534 | { | |
7010c033 | 535 | uint64_t v; |
cf0bcb51 JG |
536 | |
537 | errno = 0; | |
538 | opt_arg = poptGetOptArg(pc); | |
7010c033 SM |
539 | |
540 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
541 | ERR("Wrong value for --monitor-timer parameter: %s", opt_arg); | |
cf0bcb51 JG |
542 | ret = CMD_ERROR; |
543 | goto end; | |
544 | } | |
8193ef17 | 545 | opt_monitor_timer.interval = (uint64_t) v; |
cf0bcb51 | 546 | opt_monitor_timer.set = true; |
2a1135fa JG |
547 | DBG("Channel monitor timer interval set to %" PRIu64 " %s", |
548 | opt_monitor_timer.interval, | |
549 | USEC_UNIT); | |
d36b8583 | 550 | break; |
16068db5 | 551 | } |
491d1539 MD |
552 | case OPT_BLOCKING_TIMEOUT: |
553 | { | |
7010c033 | 554 | uint64_t v; |
491d1539 MD |
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 | ||
7010c033 SM |
567 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { |
568 | ERR("Wrong value for --blocking-timeout parameter: %s", opt_arg); | |
491d1539 MD |
569 | ret = CMD_ERROR; |
570 | goto end; | |
571 | } | |
63dd9b28 PP |
572 | |
573 | /* | |
574 | * While LTTng-UST and LTTng-tools will accept a | |
575 | * blocking timeout expressed in µs, the current | |
576 | * tracer implementation relies on poll() which | |
577 | * takes an "int timeout" parameter expressed in | |
578 | * msec. | |
579 | * | |
580 | * Since the error reporting from the tracer is | |
581 | * not precise, we perform this check here to | |
582 | * provide a helpful error message in case of | |
583 | * overflow. | |
584 | * | |
585 | * The setter (liblttng-ctl) also performs an | |
586 | * equivalent check. | |
587 | */ | |
588 | v_msec = v / 1000; | |
589 | if (v_msec != (int32_t) v_msec) { | |
590 | ERR("32-bit milliseconds overflow in --blocking-timeout parameter: %s", opt_arg); | |
591 | ret = CMD_ERROR; | |
592 | goto end; | |
491d1539 | 593 | } |
63dd9b28 | 594 | |
491d1539 MD |
595 | opt_blocking_timeout.value = (int64_t) v; |
596 | opt_blocking_timeout.set = true; | |
2a1135fa | 597 | DBG("Channel blocking timeout set to %" PRId64 " %s%s", |
63dd9b28 | 598 | opt_blocking_timeout.value, |
2a1135fa | 599 | USEC_UNIT, |
63dd9b28 PP |
600 | opt_blocking_timeout.value == 0 ? |
601 | " (non-blocking)" : ""); | |
491d1539 MD |
602 | break; |
603 | } | |
eeac7d46 MD |
604 | case OPT_USERSPACE: |
605 | opt_userspace = 1; | |
eeac7d46 | 606 | break; |
1624d5b7 | 607 | case OPT_TRACEFILE_SIZE: |
1cb514ce | 608 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 | 609 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.tracefile_size) < 0) { |
1cb514ce | 610 | ERR("Wrong value in --tracefile-size parameter: %s", opt_arg); |
16068db5 MD |
611 | ret = CMD_ERROR; |
612 | goto end; | |
613 | } | |
1624d5b7 | 614 | DBG("Maximum tracefile size set to %" PRIu64, |
cf0bcb51 | 615 | chan_opts.attr.tracefile_size); |
1624d5b7 JD |
616 | break; |
617 | case OPT_TRACEFILE_COUNT: | |
16068db5 MD |
618 | { |
619 | unsigned long v; | |
620 | ||
621 | errno = 0; | |
1cb514ce MD |
622 | opt_arg = poptGetOptArg(pc); |
623 | v = strtoul(opt_arg, NULL, 0); | |
624 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
625 | ERR("Wrong value in --tracefile-count parameter: %s", opt_arg); | |
16068db5 MD |
626 | ret = CMD_ERROR; |
627 | goto end; | |
628 | } | |
629 | if (v != (uint32_t) v) { | |
630 | ERR("32-bit overflow in --tracefile-count parameter: %s", opt_arg); | |
631 | ret = CMD_ERROR; | |
632 | goto end; | |
633 | } | |
cf0bcb51 | 634 | chan_opts.attr.tracefile_count = (uint32_t) v; |
1624d5b7 | 635 | DBG("Maximum tracefile count set to %" PRIu64, |
cf0bcb51 | 636 | chan_opts.attr.tracefile_count); |
1624d5b7 | 637 | break; |
16068db5 | 638 | } |
679b4943 SM |
639 | case OPT_LIST_OPTIONS: |
640 | list_cmd_options(stdout, long_options); | |
679b4943 | 641 | goto end; |
d36b8583 | 642 | default: |
d36b8583 DG |
643 | ret = CMD_UNDEFINED; |
644 | goto end; | |
645 | } | |
f5c47c1c JG |
646 | |
647 | if (opt_arg) { | |
648 | free(opt_arg); | |
649 | opt_arg = NULL; | |
650 | } | |
d36b8583 DG |
651 | } |
652 | ||
2948cce5 JG |
653 | ret = print_missing_or_multiple_domains( |
654 | opt_kernel + opt_userspace, false); | |
3ecec76a PP |
655 | if (ret) { |
656 | ret = CMD_ERROR; | |
657 | goto end; | |
658 | } | |
659 | ||
ea10baf2 PP |
660 | if (chan_opts.attr.overwrite == 1 && opt_blocking_timeout.set && |
661 | opt_blocking_timeout.value != 0) { | |
662 | ERR("You cannot specify --overwrite and --blocking-timeout=N, " | |
663 | "where N is different than 0"); | |
664 | ret = CMD_ERROR; | |
665 | goto end; | |
666 | } | |
667 | ||
acc09215 JRJ |
668 | /* Mi check */ |
669 | if (lttng_opt_mi) { | |
670 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
671 | if (!writer) { | |
672 | ret = -LTTNG_ERR_NOMEM; | |
673 | goto end; | |
674 | } | |
675 | ||
676 | /* Open command element */ | |
677 | ret = mi_lttng_writer_command_open(writer, | |
678 | mi_lttng_element_command_enable_channels); | |
679 | if (ret) { | |
680 | ret = CMD_ERROR; | |
681 | goto end; | |
682 | } | |
683 | ||
684 | /* Open output element */ | |
685 | ret = mi_lttng_writer_open_element(writer, | |
686 | mi_lttng_element_command_output); | |
687 | if (ret) { | |
688 | ret = CMD_ERROR; | |
689 | goto end; | |
690 | } | |
691 | } | |
692 | ||
d569ed5f MJ |
693 | arg_channel_list = poptGetArg(pc); |
694 | if (arg_channel_list == NULL) { | |
695 | ERR("Missing channel name."); | |
696 | ret = CMD_ERROR; | |
697 | success = 0; | |
698 | goto mi_closing; | |
699 | } | |
700 | ||
701 | channel_list = strdup(arg_channel_list); | |
702 | if (channel_list == NULL) { | |
703 | PERROR("Failed to copy channel name"); | |
ca1c3607 | 704 | ret = CMD_ERROR; |
acc09215 JRJ |
705 | success = 0; |
706 | goto mi_closing; | |
d36b8583 DG |
707 | } |
708 | ||
68c7f6e5 JD |
709 | leftover = poptGetArg(pc); |
710 | if (leftover) { | |
711 | ERR("Unknown argument: %s", leftover); | |
712 | ret = CMD_ERROR; | |
713 | success = 0; | |
714 | goto mi_closing; | |
715 | } | |
716 | ||
cd80958d DG |
717 | if (!opt_session_name) { |
718 | session_name = get_session_name(); | |
719 | if (session_name == NULL) { | |
acc09215 JRJ |
720 | command_ret = CMD_ERROR; |
721 | success = 0; | |
722 | goto mi_closing; | |
cd80958d DG |
723 | } |
724 | } else { | |
725 | session_name = opt_session_name; | |
726 | } | |
727 | ||
d569ed5f | 728 | command_ret = enable_channel(session_name, channel_list); |
acc09215 JRJ |
729 | if (command_ret) { |
730 | success = 0; | |
731 | } | |
732 | ||
733 | mi_closing: | |
734 | /* Mi closing */ | |
735 | if (lttng_opt_mi) { | |
736 | /* Close output element */ | |
737 | ret = mi_lttng_writer_close_element(writer); | |
738 | if (ret) { | |
739 | goto end; | |
740 | } | |
741 | ||
742 | /* Success ? */ | |
743 | ret = mi_lttng_writer_write_element_bool(writer, | |
744 | mi_lttng_element_command_success, success); | |
745 | if (ret) { | |
746 | goto end; | |
747 | } | |
748 | ||
749 | /* Command element close */ | |
750 | ret = mi_lttng_writer_command_close(writer); | |
751 | if (ret) { | |
752 | goto end; | |
753 | } | |
754 | } | |
d36b8583 DG |
755 | |
756 | end: | |
acc09215 JRJ |
757 | /* Mi clean-up */ |
758 | if (writer && mi_lttng_writer_destroy(writer)) { | |
759 | /* Preserve original error code */ | |
760 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
761 | } | |
762 | ||
5853fd43 DG |
763 | if (!opt_session_name && session_name) { |
764 | free(session_name); | |
765 | } | |
acc09215 | 766 | |
d569ed5f MJ |
767 | free(channel_list); |
768 | ||
acc09215 JRJ |
769 | /* Overwrite ret if an error occurred when enable_channel */ |
770 | ret = command_ret ? command_ret : ret; | |
ca1c3607 | 771 | poptFreeContext(pc); |
f5c47c1c | 772 | free(opt_arg); |
d36b8583 DG |
773 | return ret; |
774 | } |