Commit | Line | Data |
---|---|---|
d36b8583 | 1 | /* |
90c106c6 | 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 | ||
1ceda6f1 FD |
24 | #include <lttng/domain-internal.h> |
25 | ||
c399183f | 26 | #include "../command.h" |
1cb514ce | 27 | #include "../utils.h" |
d36b8583 | 28 | |
42224349 | 29 | |
cf0bcb51 | 30 | static struct lttng_channel chan_opts; |
5edd7e09 | 31 | static int opt_kernel; |
5440dc42 | 32 | static char *opt_session_name; |
d36b8583 | 33 | static int opt_userspace; |
a79d84dd | 34 | static char *opt_output; |
7972aab2 DG |
35 | static int opt_buffer_uid; |
36 | static int opt_buffer_pid; | |
37 | static int opt_buffer_global; | |
cf0bcb51 JG |
38 | static struct { |
39 | bool set; | |
8193ef17 | 40 | uint64_t interval; |
cf0bcb51 | 41 | } opt_monitor_timer; |
491d1539 MD |
42 | static struct { |
43 | bool set; | |
44 | int64_t value; | |
45 | } opt_blocking_timeout; | |
d36b8583 | 46 | |
acc09215 JRJ |
47 | static struct mi_writer *writer; |
48 | ||
4fc83d94 PP |
49 | #ifdef LTTNG_EMBED_HELP |
50 | static const char help_msg[] = | |
51 | #include <lttng-enable-channel.1.h> | |
52 | ; | |
53 | #endif | |
54 | ||
d36b8583 DG |
55 | enum { |
56 | OPT_HELP = 1, | |
7d29a247 DG |
57 | OPT_DISCARD, |
58 | OPT_OVERWRITE, | |
59 | OPT_SUBBUF_SIZE, | |
60 | OPT_NUM_SUBBUF, | |
61 | OPT_SWITCH_TIMER, | |
cf0bcb51 | 62 | OPT_MONITOR_TIMER, |
7d29a247 | 63 | OPT_READ_TIMER, |
d36b8583 | 64 | OPT_USERSPACE, |
679b4943 | 65 | OPT_LIST_OPTIONS, |
1624d5b7 JD |
66 | OPT_TRACEFILE_SIZE, |
67 | OPT_TRACEFILE_COUNT, | |
491d1539 | 68 | OPT_BLOCKING_TIMEOUT, |
d36b8583 DG |
69 | }; |
70 | ||
cd80958d DG |
71 | static struct lttng_handle *handle; |
72 | ||
a79d84dd DG |
73 | const char *output_mmap = "mmap"; |
74 | const char *output_splice = "splice"; | |
75 | ||
d36b8583 DG |
76 | static struct poptOption long_options[] = { |
77 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
78 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 79 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
d36b8583 | 80 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 | 81 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
7d29a247 DG |
82 | {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0}, |
83 | {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0}, | |
70d0b120 | 84 | {"subbuf-size", 0, POPT_ARG_STRING, 0, OPT_SUBBUF_SIZE, 0, 0}, |
1b579521 DG |
85 | {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0}, |
86 | {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0}, | |
cf0bcb51 | 87 | {"monitor-timer", 0, POPT_ARG_INT, 0, OPT_MONITOR_TIMER, 0, 0}, |
1b579521 | 88 | {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0}, |
679b4943 | 89 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
a79d84dd | 90 | {"output", 0, POPT_ARG_STRING, &opt_output, 0, 0, 0}, |
7972aab2 DG |
91 | {"buffers-uid", 0, POPT_ARG_VAL, &opt_buffer_uid, 1, 0, 0}, |
92 | {"buffers-pid", 0, POPT_ARG_VAL, &opt_buffer_pid, 1, 0, 0}, | |
93 | {"buffers-global", 0, POPT_ARG_VAL, &opt_buffer_global, 1, 0, 0}, | |
1624d5b7 JD |
94 | {"tracefile-size", 'C', POPT_ARG_INT, 0, OPT_TRACEFILE_SIZE, 0, 0}, |
95 | {"tracefile-count", 'W', POPT_ARG_INT, 0, OPT_TRACEFILE_COUNT, 0, 0}, | |
491d1539 | 96 | {"blocking-timeout", 0, POPT_ARG_INT, 0, OPT_BLOCKING_TIMEOUT, 0, 0}, |
d36b8583 DG |
97 | {0, 0, 0, 0, 0, 0, 0} |
98 | }; | |
99 | ||
5edd7e09 DG |
100 | /* |
101 | * Set default attributes depending on those already defined from the command | |
102 | * line. | |
103 | */ | |
104 | static void set_default_attr(struct lttng_domain *dom) | |
105 | { | |
106 | struct lttng_channel_attr default_attr; | |
107 | ||
c1e4642c JG |
108 | memset(&default_attr, 0, sizeof(default_attr)); |
109 | ||
5edd7e09 DG |
110 | /* Set attributes */ |
111 | lttng_channel_set_default_attr(dom, &default_attr); | |
112 | ||
cf0bcb51 JG |
113 | if (chan_opts.attr.overwrite == -1) { |
114 | chan_opts.attr.overwrite = default_attr.overwrite; | |
5edd7e09 | 115 | } |
cf0bcb51 JG |
116 | if (chan_opts.attr.subbuf_size == -1) { |
117 | chan_opts.attr.subbuf_size = default_attr.subbuf_size; | |
5edd7e09 | 118 | } |
cf0bcb51 JG |
119 | if (chan_opts.attr.num_subbuf == -1) { |
120 | chan_opts.attr.num_subbuf = default_attr.num_subbuf; | |
5edd7e09 | 121 | } |
cf0bcb51 JG |
122 | if (chan_opts.attr.switch_timer_interval == -1) { |
123 | chan_opts.attr.switch_timer_interval = default_attr.switch_timer_interval; | |
5edd7e09 | 124 | } |
cf0bcb51 JG |
125 | if (chan_opts.attr.read_timer_interval == -1) { |
126 | chan_opts.attr.read_timer_interval = default_attr.read_timer_interval; | |
5edd7e09 | 127 | } |
cf0bcb51 JG |
128 | if ((int) chan_opts.attr.output == -1) { |
129 | chan_opts.attr.output = default_attr.output; | |
5edd7e09 | 130 | } |
cf0bcb51 JG |
131 | if (chan_opts.attr.tracefile_count == -1) { |
132 | chan_opts.attr.tracefile_count = default_attr.tracefile_count; | |
1624d5b7 | 133 | } |
cf0bcb51 JG |
134 | if (chan_opts.attr.tracefile_size == -1) { |
135 | chan_opts.attr.tracefile_size = default_attr.tracefile_size; | |
1624d5b7 | 136 | } |
5edd7e09 DG |
137 | } |
138 | ||
d36b8583 | 139 | /* |
0fdd1e2c | 140 | * Adding channel using the lttng API. |
d36b8583 | 141 | */ |
b7f4ea0f | 142 | static int enable_channel(char *session_name, char *channel_list) |
d36b8583 | 143 | { |
cf0bcb51 | 144 | struct lttng_channel *channel = NULL; |
acc09215 | 145 | int ret = CMD_SUCCESS, warn = 0, error = 0, success = 0; |
d36b8583 | 146 | char *channel_name; |
7d29a247 | 147 | struct lttng_domain dom; |
d36b8583 | 148 | |
441c16a7 MD |
149 | memset(&dom, 0, sizeof(dom)); |
150 | ||
491d1539 MD |
151 | /* Validate options. */ |
152 | if (opt_kernel) { | |
153 | if (opt_blocking_timeout.set) { | |
154 | ERR("Retry timeout option not supported for kernel domain (-k)"); | |
155 | ret = CMD_ERROR; | |
156 | goto error; | |
157 | } | |
158 | } | |
159 | ||
d78d6610 | 160 | /* Create lttng domain */ |
7d29a247 DG |
161 | if (opt_kernel) { |
162 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 163 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
88c5f0d8 DG |
164 | if (opt_buffer_uid || opt_buffer_pid) { |
165 | ERR("Buffer type not supported for domain -k"); | |
166 | ret = CMD_ERROR; | |
167 | goto error; | |
168 | } | |
d78d6610 | 169 | } else if (opt_userspace) { |
f6a9efaa | 170 | dom.type = LTTNG_DOMAIN_UST; |
8692d4e5 DG |
171 | if (opt_buffer_pid) { |
172 | dom.buf_type = LTTNG_BUFFER_PER_PID; | |
7972aab2 | 173 | } else { |
88c5f0d8 DG |
174 | if (opt_buffer_global) { |
175 | ERR("Buffer type not supported for domain -u"); | |
176 | ret = CMD_ERROR; | |
177 | goto error; | |
178 | } | |
8692d4e5 | 179 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
7972aab2 | 180 | } |
0fdd1e2c | 181 | } else { |
3ecec76a PP |
182 | /* Checked by the caller. */ |
183 | assert(0); | |
7d29a247 DG |
184 | } |
185 | ||
5edd7e09 DG |
186 | set_default_attr(&dom); |
187 | ||
cf0bcb51 | 188 | if (chan_opts.attr.tracefile_size == 0 && chan_opts.attr.tracefile_count) { |
d16dee89 DG |
189 | ERR("Missing option --tracefile-size. " |
190 | "A file count without a size won't do anything."); | |
191 | ret = CMD_ERROR; | |
192 | goto error; | |
193 | } | |
194 | ||
cf0bcb51 JG |
195 | if ((chan_opts.attr.tracefile_size > 0) && |
196 | (chan_opts.attr.tracefile_size < chan_opts.attr.subbuf_size)) { | |
de65565a | 197 | WARN("Tracefile size rounded up from (%" PRIu64 ") to subbuffer size (%" PRIu64 ")", |
cf0bcb51 JG |
198 | chan_opts.attr.tracefile_size, chan_opts.attr.subbuf_size); |
199 | chan_opts.attr.tracefile_size = chan_opts.attr.subbuf_size; | |
1624d5b7 JD |
200 | } |
201 | ||
a79d84dd DG |
202 | /* Setting channel output */ |
203 | if (opt_output) { | |
204 | if (!strncmp(output_mmap, opt_output, strlen(output_mmap))) { | |
cf0bcb51 | 205 | chan_opts.attr.output = LTTNG_EVENT_MMAP; |
a79d84dd | 206 | } else if (!strncmp(output_splice, opt_output, strlen(output_splice))) { |
cf0bcb51 | 207 | chan_opts.attr.output = LTTNG_EVENT_SPLICE; |
a79d84dd DG |
208 | } else { |
209 | ERR("Unknown output type %s. Possible values are: %s, %s\n", | |
210 | opt_output, output_mmap, output_splice); | |
a79d84dd DG |
211 | ret = CMD_ERROR; |
212 | goto error; | |
213 | } | |
214 | } | |
215 | ||
cd80958d DG |
216 | handle = lttng_create_handle(session_name, &dom); |
217 | if (handle == NULL) { | |
218 | ret = -1; | |
219 | goto error; | |
220 | } | |
221 | ||
acc09215 JRJ |
222 | /* Mi open channels element */ |
223 | if (lttng_opt_mi) { | |
224 | assert(writer); | |
225 | ret = mi_lttng_channels_open(writer); | |
226 | if (ret) { | |
227 | ret = CMD_ERROR; | |
228 | goto error; | |
229 | } | |
230 | } | |
231 | ||
0fdd1e2c | 232 | /* Strip channel list (format: chan1,chan2,...) */ |
b7f4ea0f | 233 | channel_name = strtok(channel_list, ","); |
d36b8583 | 234 | while (channel_name != NULL) { |
cf0bcb51 JG |
235 | void *extended_ptr; |
236 | ||
1f345e94 | 237 | /* Validate channel name's length */ |
d6a6a609 | 238 | if (strlen(channel_name) >= sizeof(chan_opts.name)) { |
1f345e94 | 239 | ERR("Channel name is too long (max. %zu characters)", |
cf0bcb51 | 240 | sizeof(chan_opts.name) - 1); |
1f345e94 PP |
241 | error = 1; |
242 | goto skip_enable; | |
243 | } | |
244 | ||
cf0bcb51 JG |
245 | /* |
246 | * A dynamically-allocated channel is used in order to allow | |
247 | * the configuration of extended attributes (post-2.9). | |
248 | */ | |
249 | channel = lttng_channel_create(&dom); | |
250 | if (!channel) { | |
251 | ERR("Unable to create channel object"); | |
252 | error = 1; | |
253 | goto error; | |
254 | } | |
255 | ||
1f345e94 | 256 | /* Copy channel name */ |
cf0bcb51 JG |
257 | strcpy(channel->name, channel_name); |
258 | channel->enabled = 1; | |
259 | extended_ptr = channel->attr.extended.ptr; | |
260 | memcpy(&channel->attr, &chan_opts.attr, sizeof(chan_opts.attr)); | |
261 | channel->attr.extended.ptr = extended_ptr; | |
262 | if (opt_monitor_timer.set) { | |
263 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
264 | opt_monitor_timer.interval); | |
265 | if (ret) { | |
266 | ERR("Failed to set the channel's monitor timer interval"); | |
267 | error = 1; | |
268 | goto error; | |
269 | } | |
270 | } | |
491d1539 MD |
271 | if (opt_blocking_timeout.set) { |
272 | ret = lttng_channel_set_blocking_timeout(channel, | |
273 | opt_blocking_timeout.value); | |
274 | if (ret) { | |
275 | ERR("Failed to set the channel's blocking timeout"); | |
276 | error = 1; | |
277 | goto error; | |
278 | } | |
279 | } | |
0fdd1e2c DG |
280 | |
281 | DBG("Enabling channel %s", channel_name); | |
282 | ||
cf0bcb51 | 283 | ret = lttng_enable_channel(handle, channel); |
0fdd1e2c | 284 | if (ret < 0) { |
acc09215 | 285 | success = 0; |
42224349 | 286 | switch (-ret) { |
f73fabfd DG |
287 | case LTTNG_ERR_KERN_CHAN_EXIST: |
288 | case LTTNG_ERR_UST_CHAN_EXIST: | |
b9dfb167 | 289 | case LTTNG_ERR_CHAN_EXIST: |
88c5f0d8 | 290 | WARN("Channel %s: %s (session %s)", channel_name, |
42224349 | 291 | lttng_strerror(ret), session_name); |
acc09215 JRJ |
292 | warn = 1; |
293 | break; | |
1f345e94 PP |
294 | case LTTNG_ERR_INVALID_CHANNEL_NAME: |
295 | ERR("Invalid channel name: \"%s\". " | |
296 | "Channel names may not start with '.', and " | |
297 | "may not contain '/'.", channel_name); | |
298 | error = 1; | |
299 | break; | |
42224349 DG |
300 | default: |
301 | ERR("Channel %s: %s (session %s)", channel_name, | |
302 | lttng_strerror(ret), session_name); | |
acc09215 | 303 | error = 1; |
42224349 DG |
304 | break; |
305 | } | |
d36b8583 | 306 | } else { |
7885e399 | 307 | MSG("%s channel %s enabled for session %s", |
1ceda6f1 FD |
308 | lttng_domain_type_str(dom.type), |
309 | channel_name, session_name); | |
acc09215 JRJ |
310 | success = 1; |
311 | } | |
312 | ||
1f345e94 | 313 | skip_enable: |
acc09215 JRJ |
314 | if (lttng_opt_mi) { |
315 | /* Mi print the channel element and leave it open */ | |
cf0bcb51 | 316 | ret = mi_lttng_channel(writer, channel, 1); |
acc09215 JRJ |
317 | if (ret) { |
318 | ret = CMD_ERROR; | |
319 | goto error; | |
320 | } | |
321 | ||
322 | /* Individual Success ? */ | |
323 | ret = mi_lttng_writer_write_element_bool(writer, | |
324 | mi_lttng_element_command_success, success); | |
325 | if (ret) { | |
326 | ret = CMD_ERROR; | |
327 | goto error; | |
328 | } | |
329 | ||
330 | /* Close channel element */ | |
331 | ret = mi_lttng_writer_close_element(writer); | |
332 | if (ret) { | |
333 | ret = CMD_ERROR; | |
334 | goto error; | |
335 | } | |
d36b8583 DG |
336 | } |
337 | ||
acc09215 | 338 | /* Next channel */ |
d36b8583 | 339 | channel_name = strtok(NULL, ","); |
cf0bcb51 JG |
340 | lttng_channel_destroy(channel); |
341 | channel = NULL; | |
d36b8583 DG |
342 | } |
343 | ||
acc09215 JRJ |
344 | if (lttng_opt_mi) { |
345 | /* Close channels element */ | |
346 | ret = mi_lttng_writer_close_element(writer); | |
347 | if (ret) { | |
348 | ret = CMD_ERROR; | |
349 | goto error; | |
350 | } | |
351 | } | |
352 | ||
ae856491 DG |
353 | ret = CMD_SUCCESS; |
354 | ||
d36b8583 | 355 | error: |
cf0bcb51 JG |
356 | if (channel) { |
357 | lttng_channel_destroy(channel); | |
358 | } | |
acc09215 JRJ |
359 | /* If more important error happen bypass the warning */ |
360 | if (!ret && warn) { | |
ae856491 DG |
361 | ret = CMD_WARNING; |
362 | } | |
acc09215 JRJ |
363 | /* If more important error happen bypass the warning */ |
364 | if (!ret && error) { | |
365 | ret = CMD_ERROR; | |
366 | } | |
ae856491 | 367 | |
cd80958d DG |
368 | lttng_destroy_handle(handle); |
369 | ||
d36b8583 DG |
370 | return ret; |
371 | } | |
372 | ||
373 | /* | |
0fdd1e2c | 374 | * Default value for channel configuration. |
7d29a247 DG |
375 | */ |
376 | static void init_channel_config(void) | |
377 | { | |
5edd7e09 DG |
378 | /* |
379 | * Put -1 everywhere so we can identify those set by the command line and | |
380 | * those needed to be set by the default values. | |
381 | */ | |
cf0bcb51 JG |
382 | memset(&chan_opts.attr, -1, sizeof(chan_opts.attr)); |
383 | chan_opts.attr.extended.ptr = NULL; | |
7d29a247 DG |
384 | } |
385 | ||
386 | /* | |
0fdd1e2c | 387 | * Add channel to trace session |
d36b8583 DG |
388 | */ |
389 | int cmd_enable_channels(int argc, const char **argv) | |
390 | { | |
acc09215 | 391 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
d36b8583 | 392 | static poptContext pc; |
cd80958d | 393 | char *session_name = NULL; |
b7f4ea0f | 394 | char *channel_list = NULL; |
70d0b120 | 395 | char *opt_arg = NULL; |
b7f4ea0f | 396 | const char *arg_channel_list = NULL; |
68c7f6e5 | 397 | const char *leftover = NULL; |
d36b8583 | 398 | |
7d29a247 DG |
399 | init_channel_config(); |
400 | ||
d36b8583 DG |
401 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
402 | poptReadDefaultConfig(pc, 0); | |
403 | ||
404 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
405 | switch (opt) { | |
406 | case OPT_HELP: | |
4ba92f18 | 407 | SHOW_HELP(); |
d36b8583 | 408 | goto end; |
7d29a247 | 409 | case OPT_DISCARD: |
cf0bcb51 | 410 | chan_opts.attr.overwrite = 0; |
7d29a247 DG |
411 | DBG("Channel set to discard"); |
412 | break; | |
413 | case OPT_OVERWRITE: | |
cf0bcb51 | 414 | chan_opts.attr.overwrite = 1; |
7d29a247 DG |
415 | DBG("Channel set to overwrite"); |
416 | break; | |
417 | case OPT_SUBBUF_SIZE: | |
1cb514ce MD |
418 | { |
419 | uint64_t rounded_size; | |
420 | int order; | |
421 | ||
70d0b120 SM |
422 | /* Parse the size */ |
423 | opt_arg = poptGetOptArg(pc); | |
cf0bcb51 | 424 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.subbuf_size) < 0 || !chan_opts.attr.subbuf_size) { |
1cb514ce | 425 | ERR("Wrong value in --subbuf-size parameter: %s", opt_arg); |
70d0b120 SM |
426 | ret = CMD_ERROR; |
427 | goto end; | |
428 | } | |
429 | ||
cf0bcb51 | 430 | order = get_count_order_u64(chan_opts.attr.subbuf_size); |
1cb514ce MD |
431 | assert(order >= 0); |
432 | rounded_size = 1ULL << order; | |
cf0bcb51 | 433 | if (rounded_size < chan_opts.attr.subbuf_size) { |
06c0da96 | 434 | ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 435 | chan_opts.attr.subbuf_size); |
06c0da96 DG |
436 | ret = CMD_ERROR; |
437 | goto end; | |
438 | } | |
439 | ||
cf0bcb51 | 440 | if (rounded_size != chan_opts.attr.subbuf_size) { |
1cb514ce | 441 | WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
442 | chan_opts.attr.subbuf_size, rounded_size); |
443 | chan_opts.attr.subbuf_size = rounded_size; | |
70d0b120 SM |
444 | } |
445 | ||
1cb514ce | 446 | /* Should now be power of 2 */ |
cf0bcb51 | 447 | assert(!((chan_opts.attr.subbuf_size - 1) & chan_opts.attr.subbuf_size)); |
1cb514ce | 448 | |
cf0bcb51 | 449 | DBG("Channel subbuf size set to %" PRIu64, chan_opts.attr.subbuf_size); |
7d29a247 | 450 | break; |
1cb514ce | 451 | } |
7d29a247 | 452 | case OPT_NUM_SUBBUF: |
1cb514ce MD |
453 | { |
454 | uint64_t rounded_size; | |
455 | int order; | |
456 | ||
16068db5 | 457 | errno = 0; |
1cb514ce | 458 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 JG |
459 | chan_opts.attr.num_subbuf = strtoull(opt_arg, NULL, 0); |
460 | if (errno != 0 || !chan_opts.attr.num_subbuf || !isdigit(opt_arg[0])) { | |
1cb514ce | 461 | ERR("Wrong value in --num-subbuf parameter: %s", opt_arg); |
16068db5 MD |
462 | ret = CMD_ERROR; |
463 | goto end; | |
464 | } | |
465 | ||
cf0bcb51 | 466 | order = get_count_order_u64(chan_opts.attr.num_subbuf); |
1cb514ce MD |
467 | assert(order >= 0); |
468 | rounded_size = 1ULL << order; | |
cf0bcb51 | 469 | if (rounded_size < chan_opts.attr.num_subbuf) { |
06c0da96 | 470 | ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!", |
cf0bcb51 | 471 | chan_opts.attr.num_subbuf); |
06c0da96 DG |
472 | ret = CMD_ERROR; |
473 | goto end; | |
474 | } | |
475 | ||
cf0bcb51 | 476 | if (rounded_size != chan_opts.attr.num_subbuf) { |
1cb514ce | 477 | WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", |
cf0bcb51 JG |
478 | chan_opts.attr.num_subbuf, rounded_size); |
479 | chan_opts.attr.num_subbuf = rounded_size; | |
1cb514ce MD |
480 | } |
481 | ||
482 | /* Should now be power of 2 */ | |
cf0bcb51 | 483 | assert(!((chan_opts.attr.num_subbuf - 1) & chan_opts.attr.num_subbuf)); |
1cb514ce | 484 | |
cf0bcb51 | 485 | DBG("Channel subbuf num set to %" PRIu64, chan_opts.attr.num_subbuf); |
7d29a247 | 486 | break; |
1cb514ce | 487 | } |
7d29a247 | 488 | case OPT_SWITCH_TIMER: |
16068db5 | 489 | { |
c7219617 | 490 | uint64_t v; |
16068db5 MD |
491 | |
492 | errno = 0; | |
1cb514ce | 493 | opt_arg = poptGetOptArg(pc); |
c7219617 SM |
494 | |
495 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
496 | ERR("Wrong value for --switch-timer parameter: %s", opt_arg); | |
16068db5 MD |
497 | ret = CMD_ERROR; |
498 | goto end; | |
499 | } | |
c7219617 | 500 | |
16068db5 MD |
501 | if (v != (uint32_t) v) { |
502 | ERR("32-bit overflow in --switch-timer parameter: %s", opt_arg); | |
503 | ret = CMD_ERROR; | |
504 | goto end; | |
505 | } | |
cf0bcb51 | 506 | chan_opts.attr.switch_timer_interval = (uint32_t) v; |
2a1135fa JG |
507 | DBG("Channel switch timer interval set to %d %s", |
508 | chan_opts.attr.switch_timer_interval, | |
509 | USEC_UNIT); | |
7d29a247 | 510 | break; |
16068db5 | 511 | } |
7d29a247 | 512 | case OPT_READ_TIMER: |
16068db5 | 513 | { |
c7219617 | 514 | uint64_t v; |
16068db5 MD |
515 | |
516 | errno = 0; | |
1cb514ce | 517 | opt_arg = poptGetOptArg(pc); |
c7219617 SM |
518 | |
519 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
520 | ERR("Wrong value for --read-timer parameter: %s", opt_arg); | |
16068db5 MD |
521 | ret = CMD_ERROR; |
522 | goto end; | |
523 | } | |
c7219617 | 524 | |
16068db5 MD |
525 | if (v != (uint32_t) v) { |
526 | ERR("32-bit overflow in --read-timer parameter: %s", opt_arg); | |
527 | ret = CMD_ERROR; | |
528 | goto end; | |
529 | } | |
cf0bcb51 | 530 | chan_opts.attr.read_timer_interval = (uint32_t) v; |
2a1135fa JG |
531 | DBG("Channel read timer interval set to %d %s", |
532 | chan_opts.attr.read_timer_interval, | |
533 | USEC_UNIT); | |
cf0bcb51 JG |
534 | break; |
535 | } | |
536 | case OPT_MONITOR_TIMER: | |
537 | { | |
7010c033 | 538 | uint64_t v; |
cf0bcb51 JG |
539 | |
540 | errno = 0; | |
541 | opt_arg = poptGetOptArg(pc); | |
7010c033 SM |
542 | |
543 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { | |
544 | ERR("Wrong value for --monitor-timer parameter: %s", opt_arg); | |
cf0bcb51 JG |
545 | ret = CMD_ERROR; |
546 | goto end; | |
547 | } | |
8193ef17 | 548 | opt_monitor_timer.interval = (uint64_t) v; |
cf0bcb51 | 549 | opt_monitor_timer.set = true; |
2a1135fa JG |
550 | DBG("Channel monitor timer interval set to %" PRIu64 " %s", |
551 | opt_monitor_timer.interval, | |
552 | USEC_UNIT); | |
d36b8583 | 553 | break; |
16068db5 | 554 | } |
491d1539 MD |
555 | case OPT_BLOCKING_TIMEOUT: |
556 | { | |
7010c033 | 557 | uint64_t v; |
491d1539 MD |
558 | long long v_msec; |
559 | ||
560 | errno = 0; | |
561 | opt_arg = poptGetOptArg(pc); | |
63dd9b28 PP |
562 | |
563 | if (strcmp(opt_arg, "inf") == 0) { | |
564 | opt_blocking_timeout.value = (int64_t) -1; | |
565 | opt_blocking_timeout.set = true; | |
566 | DBG("Channel blocking timeout set to infinity"); | |
567 | break; | |
568 | } | |
569 | ||
7010c033 SM |
570 | if (utils_parse_time_suffix(opt_arg, &v) < 0) { |
571 | ERR("Wrong value for --blocking-timeout parameter: %s", opt_arg); | |
491d1539 MD |
572 | ret = CMD_ERROR; |
573 | goto end; | |
574 | } | |
63dd9b28 PP |
575 | |
576 | /* | |
577 | * While LTTng-UST and LTTng-tools will accept a | |
578 | * blocking timeout expressed in µs, the current | |
579 | * tracer implementation relies on poll() which | |
580 | * takes an "int timeout" parameter expressed in | |
581 | * msec. | |
582 | * | |
583 | * Since the error reporting from the tracer is | |
584 | * not precise, we perform this check here to | |
585 | * provide a helpful error message in case of | |
586 | * overflow. | |
587 | * | |
588 | * The setter (liblttng-ctl) also performs an | |
589 | * equivalent check. | |
590 | */ | |
591 | v_msec = v / 1000; | |
592 | if (v_msec != (int32_t) v_msec) { | |
593 | ERR("32-bit milliseconds overflow in --blocking-timeout parameter: %s", opt_arg); | |
594 | ret = CMD_ERROR; | |
595 | goto end; | |
491d1539 | 596 | } |
63dd9b28 | 597 | |
491d1539 MD |
598 | opt_blocking_timeout.value = (int64_t) v; |
599 | opt_blocking_timeout.set = true; | |
2a1135fa | 600 | DBG("Channel blocking timeout set to %" PRId64 " %s%s", |
63dd9b28 | 601 | opt_blocking_timeout.value, |
2a1135fa | 602 | USEC_UNIT, |
63dd9b28 PP |
603 | opt_blocking_timeout.value == 0 ? |
604 | " (non-blocking)" : ""); | |
491d1539 MD |
605 | break; |
606 | } | |
eeac7d46 MD |
607 | case OPT_USERSPACE: |
608 | opt_userspace = 1; | |
eeac7d46 | 609 | break; |
1624d5b7 | 610 | case OPT_TRACEFILE_SIZE: |
1cb514ce | 611 | opt_arg = poptGetOptArg(pc); |
cf0bcb51 | 612 | if (utils_parse_size_suffix(opt_arg, &chan_opts.attr.tracefile_size) < 0) { |
1cb514ce | 613 | ERR("Wrong value in --tracefile-size parameter: %s", opt_arg); |
16068db5 MD |
614 | ret = CMD_ERROR; |
615 | goto end; | |
616 | } | |
1624d5b7 | 617 | DBG("Maximum tracefile size set to %" PRIu64, |
cf0bcb51 | 618 | chan_opts.attr.tracefile_size); |
1624d5b7 JD |
619 | break; |
620 | case OPT_TRACEFILE_COUNT: | |
16068db5 MD |
621 | { |
622 | unsigned long v; | |
623 | ||
624 | errno = 0; | |
1cb514ce MD |
625 | opt_arg = poptGetOptArg(pc); |
626 | v = strtoul(opt_arg, NULL, 0); | |
627 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
628 | ERR("Wrong value in --tracefile-count parameter: %s", opt_arg); | |
16068db5 MD |
629 | ret = CMD_ERROR; |
630 | goto end; | |
631 | } | |
632 | if (v != (uint32_t) v) { | |
633 | ERR("32-bit overflow in --tracefile-count parameter: %s", opt_arg); | |
634 | ret = CMD_ERROR; | |
635 | goto end; | |
636 | } | |
cf0bcb51 | 637 | chan_opts.attr.tracefile_count = (uint32_t) v; |
1624d5b7 | 638 | DBG("Maximum tracefile count set to %" PRIu64, |
cf0bcb51 | 639 | chan_opts.attr.tracefile_count); |
1624d5b7 | 640 | break; |
16068db5 | 641 | } |
679b4943 SM |
642 | case OPT_LIST_OPTIONS: |
643 | list_cmd_options(stdout, long_options); | |
679b4943 | 644 | goto end; |
d36b8583 | 645 | default: |
d36b8583 DG |
646 | ret = CMD_UNDEFINED; |
647 | goto end; | |
648 | } | |
ccdec6d9 JG |
649 | |
650 | if (opt_arg) { | |
651 | free(opt_arg); | |
652 | opt_arg = NULL; | |
653 | } | |
d36b8583 DG |
654 | } |
655 | ||
3533d06b JG |
656 | ret = print_missing_or_multiple_domains( |
657 | opt_kernel + opt_userspace, false); | |
3ecec76a PP |
658 | if (ret) { |
659 | ret = CMD_ERROR; | |
660 | goto end; | |
661 | } | |
662 | ||
ea10baf2 PP |
663 | if (chan_opts.attr.overwrite == 1 && opt_blocking_timeout.set && |
664 | opt_blocking_timeout.value != 0) { | |
665 | ERR("You cannot specify --overwrite and --blocking-timeout=N, " | |
666 | "where N is different than 0"); | |
667 | ret = CMD_ERROR; | |
668 | goto end; | |
669 | } | |
670 | ||
acc09215 JRJ |
671 | /* Mi check */ |
672 | if (lttng_opt_mi) { | |
673 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
674 | if (!writer) { | |
675 | ret = -LTTNG_ERR_NOMEM; | |
676 | goto end; | |
677 | } | |
678 | ||
679 | /* Open command element */ | |
680 | ret = mi_lttng_writer_command_open(writer, | |
681 | mi_lttng_element_command_enable_channels); | |
682 | if (ret) { | |
683 | ret = CMD_ERROR; | |
684 | goto end; | |
685 | } | |
686 | ||
687 | /* Open output element */ | |
688 | ret = mi_lttng_writer_open_element(writer, | |
689 | mi_lttng_element_command_output); | |
690 | if (ret) { | |
691 | ret = CMD_ERROR; | |
692 | goto end; | |
693 | } | |
694 | } | |
695 | ||
b7f4ea0f MJ |
696 | arg_channel_list = poptGetArg(pc); |
697 | if (arg_channel_list == NULL) { | |
698 | ERR("Missing channel name."); | |
699 | ret = CMD_ERROR; | |
700 | success = 0; | |
701 | goto mi_closing; | |
702 | } | |
703 | ||
704 | channel_list = strdup(arg_channel_list); | |
705 | if (channel_list == NULL) { | |
706 | PERROR("Failed to copy channel name"); | |
ca1c3607 | 707 | ret = CMD_ERROR; |
acc09215 JRJ |
708 | success = 0; |
709 | goto mi_closing; | |
d36b8583 DG |
710 | } |
711 | ||
68c7f6e5 JD |
712 | leftover = poptGetArg(pc); |
713 | if (leftover) { | |
714 | ERR("Unknown argument: %s", leftover); | |
715 | ret = CMD_ERROR; | |
716 | success = 0; | |
717 | goto mi_closing; | |
718 | } | |
719 | ||
cd80958d DG |
720 | if (!opt_session_name) { |
721 | session_name = get_session_name(); | |
722 | if (session_name == NULL) { | |
acc09215 JRJ |
723 | command_ret = CMD_ERROR; |
724 | success = 0; | |
725 | goto mi_closing; | |
cd80958d DG |
726 | } |
727 | } else { | |
728 | session_name = opt_session_name; | |
729 | } | |
730 | ||
b7f4ea0f | 731 | command_ret = enable_channel(session_name, channel_list); |
acc09215 JRJ |
732 | if (command_ret) { |
733 | success = 0; | |
734 | } | |
735 | ||
736 | mi_closing: | |
737 | /* Mi closing */ | |
738 | if (lttng_opt_mi) { | |
739 | /* Close output element */ | |
740 | ret = mi_lttng_writer_close_element(writer); | |
741 | if (ret) { | |
742 | goto end; | |
743 | } | |
744 | ||
745 | /* Success ? */ | |
746 | ret = mi_lttng_writer_write_element_bool(writer, | |
747 | mi_lttng_element_command_success, success); | |
748 | if (ret) { | |
749 | goto end; | |
750 | } | |
751 | ||
752 | /* Command element close */ | |
753 | ret = mi_lttng_writer_command_close(writer); | |
754 | if (ret) { | |
755 | goto end; | |
756 | } | |
757 | } | |
d36b8583 DG |
758 | |
759 | end: | |
acc09215 JRJ |
760 | /* Mi clean-up */ |
761 | if (writer && mi_lttng_writer_destroy(writer)) { | |
762 | /* Preserve original error code */ | |
763 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
764 | } | |
765 | ||
5853fd43 DG |
766 | if (!opt_session_name && session_name) { |
767 | free(session_name); | |
768 | } | |
acc09215 | 769 | |
b7f4ea0f MJ |
770 | free(channel_list); |
771 | ||
acc09215 JRJ |
772 | /* Overwrite ret if an error occurred when enable_channel */ |
773 | ret = command_ret ? command_ret : ret; | |
ca1c3607 | 774 | poptFreeContext(pc); |
ccdec6d9 | 775 | free(opt_arg); |
d36b8583 DG |
776 | return ret; |
777 | } |