Commit | Line | Data |
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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 | |
d36b8583 | 38 | static char *opt_channels; |
5edd7e09 | 39 | static int opt_kernel; |
5440dc42 | 40 | static char *opt_session_name; |
d36b8583 | 41 | static int opt_userspace; |
d78d6610 | 42 | static struct lttng_channel chan; |
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; | |
d36b8583 | 47 | |
acc09215 JRJ |
48 | static struct mi_writer *writer; |
49 | ||
d36b8583 DG |
50 | enum { |
51 | OPT_HELP = 1, | |
7d29a247 DG |
52 | OPT_DISCARD, |
53 | OPT_OVERWRITE, | |
54 | OPT_SUBBUF_SIZE, | |
55 | OPT_NUM_SUBBUF, | |
56 | OPT_SWITCH_TIMER, | |
57 | OPT_READ_TIMER, | |
d36b8583 | 58 | OPT_USERSPACE, |
679b4943 | 59 | OPT_LIST_OPTIONS, |
1624d5b7 JD |
60 | OPT_TRACEFILE_SIZE, |
61 | OPT_TRACEFILE_COUNT, | |
d36b8583 DG |
62 | }; |
63 | ||
cd80958d DG |
64 | static struct lttng_handle *handle; |
65 | ||
a79d84dd DG |
66 | const char *output_mmap = "mmap"; |
67 | const char *output_splice = "splice"; | |
68 | ||
d36b8583 DG |
69 | static struct poptOption long_options[] = { |
70 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
71 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 72 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
d36b8583 | 73 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 | 74 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
7d29a247 DG |
75 | {"discard", 0, POPT_ARG_NONE, 0, OPT_DISCARD, 0, 0}, |
76 | {"overwrite", 0, POPT_ARG_NONE, 0, OPT_OVERWRITE, 0, 0}, | |
70d0b120 | 77 | {"subbuf-size", 0, POPT_ARG_STRING, 0, OPT_SUBBUF_SIZE, 0, 0}, |
1b579521 DG |
78 | {"num-subbuf", 0, POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0}, |
79 | {"switch-timer", 0, POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0}, | |
80 | {"read-timer", 0, POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0}, | |
679b4943 | 81 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
a79d84dd | 82 | {"output", 0, POPT_ARG_STRING, &opt_output, 0, 0, 0}, |
7972aab2 DG |
83 | {"buffers-uid", 0, POPT_ARG_VAL, &opt_buffer_uid, 1, 0, 0}, |
84 | {"buffers-pid", 0, POPT_ARG_VAL, &opt_buffer_pid, 1, 0, 0}, | |
85 | {"buffers-global", 0, POPT_ARG_VAL, &opt_buffer_global, 1, 0, 0}, | |
1624d5b7 JD |
86 | {"tracefile-size", 'C', POPT_ARG_INT, 0, OPT_TRACEFILE_SIZE, 0, 0}, |
87 | {"tracefile-count", 'W', POPT_ARG_INT, 0, OPT_TRACEFILE_COUNT, 0, 0}, | |
d36b8583 DG |
88 | {0, 0, 0, 0, 0, 0, 0} |
89 | }; | |
90 | ||
91 | /* | |
92 | * usage | |
93 | */ | |
94 | static void usage(FILE *ofp) | |
95 | { | |
05be3802 | 96 | fprintf(ofp, "usage: lttng enable-channel NAME[,NAME2,...] (-u | -k) [OPTIONS]\n"); |
d36b8583 | 97 | fprintf(ofp, "\n"); |
32a6298d | 98 | fprintf(ofp, "Options:\n"); |
7d29a247 | 99 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 100 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d | 101 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
27221701 | 102 | fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n"); |
27221701 | 103 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
7d29a247 DG |
104 | fprintf(ofp, "\n"); |
105 | fprintf(ofp, "Channel options:\n"); | |
cabd9892 MD |
106 | fprintf(ofp, " --discard Discard event when buffers are full%s\n", |
107 | DEFAULT_CHANNEL_OVERWRITE ? "" : " (default)"); | |
108 | fprintf(ofp, " --overwrite Flight recorder mode%s\n", | |
109 | DEFAULT_CHANNEL_OVERWRITE ? " (default)" : ""); | |
70d0b120 | 110 | fprintf(ofp, " --subbuf-size SIZE Subbuffer size in bytes {+k,+M,+G}\n"); |
0a9c6494 DG |
111 | fprintf(ofp, " (default UST uid: %zu, UST pid: %zu, kernel: %zu, metadata: %zu)\n", |
112 | default_get_ust_uid_channel_subbuf_size(), | |
113 | default_get_ust_pid_channel_subbuf_size(), | |
114 | default_get_kernel_channel_subbuf_size(), | |
115 | default_get_metadata_subbuf_size()); | |
1cb514ce | 116 | fprintf(ofp, " Rounded up to the next power of 2.\n"); |
cc62c0c0 | 117 | fprintf(ofp, " --num-subbuf NUM Number of subbufers\n"); |
0a9c6494 DG |
118 | fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n", |
119 | DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM, DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM, | |
120 | DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM, DEFAULT_METADATA_SUBBUF_NUM); | |
1cb514ce | 121 | fprintf(ofp, " Rounded up to the next power of 2.\n"); |
0a9c6494 DG |
122 | fprintf(ofp, " --switch-timer USEC Switch timer interval in usec\n"); |
123 | fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n", | |
124 | DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER, DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER, | |
125 | DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER, DEFAULT_METADATA_SWITCH_TIMER); | |
126 | fprintf(ofp, " --read-timer USEC Read timer interval in usec.\n"); | |
127 | fprintf(ofp, " (default UST uid: %u, UST pid: %u, kernel: %u, metadata: %u)\n", | |
128 | DEFAULT_UST_UID_CHANNEL_READ_TIMER, DEFAULT_UST_UID_CHANNEL_READ_TIMER, | |
129 | DEFAULT_KERNEL_CHANNEL_READ_TIMER, DEFAULT_METADATA_READ_TIMER); | |
a79d84dd DG |
130 | fprintf(ofp, " --output TYPE Channel output type (Values: %s, %s)\n", |
131 | output_mmap, output_splice); | |
0a9c6494 DG |
132 | fprintf(ofp, " (default UST uid: %s, UST pid: %s, kernel: %s, metadata: %s)\n", |
133 | DEFAULT_UST_UID_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice, | |
134 | DEFAULT_UST_PID_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice, | |
135 | DEFAULT_KERNEL_CHANNEL_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice, | |
136 | DEFAULT_METADATA_OUTPUT == LTTNG_EVENT_MMAP ? output_mmap : output_splice); | |
05c35276 DG |
137 | fprintf(ofp, " --buffers-uid Use per UID buffer (-u only)\n"); |
138 | fprintf(ofp, " --buffers-pid Use per PID buffer (-u only)\n"); | |
7972aab2 | 139 | fprintf(ofp, " --buffers-global Use shared buffer for the whole system (-k only)\n"); |
1624d5b7 | 140 | fprintf(ofp, " -C, --tracefile-size SIZE\n"); |
0a9c6494 DG |
141 | fprintf(ofp, " Maximum size of each tracefile within a stream (in bytes). 0 means unlimited.\n"); |
142 | fprintf(ofp, " (default: %u)\n", DEFAULT_CHANNEL_TRACEFILE_SIZE); | |
c0684a0d MD |
143 | fprintf(ofp, " Note: traces generated with this option may inaccurately report\n"); |
144 | fprintf(ofp, " discarded events as per CTF 1.8.\n"); | |
1624d5b7 JD |
145 | fprintf(ofp, " -W, --tracefile-count COUNT\n"); |
146 | fprintf(ofp, " Used in conjunction with -C option, this will limit the number\n"); | |
0a9c6494 DG |
147 | fprintf(ofp, " of files created to the specified count. 0 means unlimited.\n"); |
148 | fprintf(ofp, " (default: %u)\n", DEFAULT_CHANNEL_TRACEFILE_COUNT); | |
d36b8583 DG |
149 | fprintf(ofp, "\n"); |
150 | } | |
151 | ||
5edd7e09 DG |
152 | /* |
153 | * Set default attributes depending on those already defined from the command | |
154 | * line. | |
155 | */ | |
156 | static void set_default_attr(struct lttng_domain *dom) | |
157 | { | |
158 | struct lttng_channel_attr default_attr; | |
159 | ||
160 | /* Set attributes */ | |
161 | lttng_channel_set_default_attr(dom, &default_attr); | |
162 | ||
163 | if (chan.attr.overwrite == -1) { | |
164 | chan.attr.overwrite = default_attr.overwrite; | |
165 | } | |
166 | if (chan.attr.subbuf_size == -1) { | |
167 | chan.attr.subbuf_size = default_attr.subbuf_size; | |
168 | } | |
169 | if (chan.attr.num_subbuf == -1) { | |
170 | chan.attr.num_subbuf = default_attr.num_subbuf; | |
171 | } | |
172 | if (chan.attr.switch_timer_interval == -1) { | |
173 | chan.attr.switch_timer_interval = default_attr.switch_timer_interval; | |
174 | } | |
175 | if (chan.attr.read_timer_interval == -1) { | |
176 | chan.attr.read_timer_interval = default_attr.read_timer_interval; | |
177 | } | |
109be0da | 178 | if ((int) chan.attr.output == -1) { |
5edd7e09 DG |
179 | chan.attr.output = default_attr.output; |
180 | } | |
1624d5b7 JD |
181 | if (chan.attr.tracefile_count == -1) { |
182 | chan.attr.tracefile_count = default_attr.tracefile_count; | |
183 | } | |
184 | if (chan.attr.tracefile_size == -1) { | |
185 | chan.attr.tracefile_size = default_attr.tracefile_size; | |
186 | } | |
5edd7e09 DG |
187 | } |
188 | ||
d36b8583 | 189 | /* |
0fdd1e2c | 190 | * Adding channel using the lttng API. |
d36b8583 | 191 | */ |
cd80958d | 192 | static int enable_channel(char *session_name) |
d36b8583 | 193 | { |
acc09215 | 194 | int ret = CMD_SUCCESS, warn = 0, error = 0, success = 0; |
d36b8583 | 195 | char *channel_name; |
7d29a247 | 196 | struct lttng_domain dom; |
d36b8583 | 197 | |
441c16a7 MD |
198 | memset(&dom, 0, sizeof(dom)); |
199 | ||
d78d6610 | 200 | /* Create lttng domain */ |
7d29a247 DG |
201 | if (opt_kernel) { |
202 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 203 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
88c5f0d8 DG |
204 | if (opt_buffer_uid || opt_buffer_pid) { |
205 | ERR("Buffer type not supported for domain -k"); | |
206 | ret = CMD_ERROR; | |
207 | goto error; | |
208 | } | |
d78d6610 | 209 | } else if (opt_userspace) { |
f6a9efaa | 210 | dom.type = LTTNG_DOMAIN_UST; |
8692d4e5 DG |
211 | if (opt_buffer_pid) { |
212 | dom.buf_type = LTTNG_BUFFER_PER_PID; | |
7972aab2 | 213 | } else { |
88c5f0d8 DG |
214 | if (opt_buffer_global) { |
215 | ERR("Buffer type not supported for domain -u"); | |
216 | ret = CMD_ERROR; | |
217 | goto error; | |
218 | } | |
8692d4e5 | 219 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
7972aab2 | 220 | } |
0fdd1e2c | 221 | } else { |
3ecec76a PP |
222 | /* Checked by the caller. */ |
223 | assert(0); | |
7d29a247 DG |
224 | } |
225 | ||
5edd7e09 DG |
226 | set_default_attr(&dom); |
227 | ||
d16dee89 DG |
228 | if (chan.attr.tracefile_size == 0 && chan.attr.tracefile_count) { |
229 | ERR("Missing option --tracefile-size. " | |
230 | "A file count without a size won't do anything."); | |
231 | ret = CMD_ERROR; | |
232 | goto error; | |
233 | } | |
234 | ||
1624d5b7 JD |
235 | if ((chan.attr.tracefile_size > 0) && |
236 | (chan.attr.tracefile_size < chan.attr.subbuf_size)) { | |
de65565a | 237 | WARN("Tracefile size rounded up from (%" PRIu64 ") to subbuffer size (%" PRIu64 ")", |
1624d5b7 | 238 | chan.attr.tracefile_size, chan.attr.subbuf_size); |
de65565a | 239 | chan.attr.tracefile_size = chan.attr.subbuf_size; |
1624d5b7 JD |
240 | } |
241 | ||
a79d84dd DG |
242 | /* Setting channel output */ |
243 | if (opt_output) { | |
244 | if (!strncmp(output_mmap, opt_output, strlen(output_mmap))) { | |
245 | chan.attr.output = LTTNG_EVENT_MMAP; | |
246 | } else if (!strncmp(output_splice, opt_output, strlen(output_splice))) { | |
247 | chan.attr.output = LTTNG_EVENT_SPLICE; | |
248 | } else { | |
249 | ERR("Unknown output type %s. Possible values are: %s, %s\n", | |
250 | opt_output, output_mmap, output_splice); | |
251 | usage(stderr); | |
252 | ret = CMD_ERROR; | |
253 | goto error; | |
254 | } | |
255 | } | |
256 | ||
cd80958d DG |
257 | handle = lttng_create_handle(session_name, &dom); |
258 | if (handle == NULL) { | |
259 | ret = -1; | |
260 | goto error; | |
261 | } | |
262 | ||
acc09215 JRJ |
263 | /* Mi open channels element */ |
264 | if (lttng_opt_mi) { | |
265 | assert(writer); | |
266 | ret = mi_lttng_channels_open(writer); | |
267 | if (ret) { | |
268 | ret = CMD_ERROR; | |
269 | goto error; | |
270 | } | |
271 | } | |
272 | ||
0fdd1e2c | 273 | /* Strip channel list (format: chan1,chan2,...) */ |
d36b8583 DG |
274 | channel_name = strtok(opt_channels, ","); |
275 | while (channel_name != NULL) { | |
1f345e94 PP |
276 | /* Validate channel name's length */ |
277 | if (strlen(channel_name) >= NAME_MAX) { | |
278 | ERR("Channel name is too long (max. %zu characters)", | |
279 | sizeof(chan.name) - 1); | |
280 | error = 1; | |
281 | goto skip_enable; | |
282 | } | |
283 | ||
284 | /* Copy channel name */ | |
285 | strcpy(chan.name, channel_name); | |
0fdd1e2c DG |
286 | |
287 | DBG("Enabling channel %s", channel_name); | |
288 | ||
289 | ret = lttng_enable_channel(handle, &chan); | |
290 | if (ret < 0) { | |
acc09215 | 291 | success = 0; |
42224349 | 292 | switch (-ret) { |
f73fabfd DG |
293 | case LTTNG_ERR_KERN_CHAN_EXIST: |
294 | case LTTNG_ERR_UST_CHAN_EXIST: | |
b9dfb167 | 295 | case LTTNG_ERR_CHAN_EXIST: |
88c5f0d8 | 296 | WARN("Channel %s: %s (session %s)", channel_name, |
42224349 | 297 | lttng_strerror(ret), session_name); |
acc09215 JRJ |
298 | warn = 1; |
299 | break; | |
1f345e94 PP |
300 | case LTTNG_ERR_INVALID_CHANNEL_NAME: |
301 | ERR("Invalid channel name: \"%s\". " | |
302 | "Channel names may not start with '.', and " | |
303 | "may not contain '/'.", channel_name); | |
304 | error = 1; | |
305 | break; | |
42224349 DG |
306 | default: |
307 | ERR("Channel %s: %s (session %s)", channel_name, | |
308 | lttng_strerror(ret), session_name); | |
acc09215 | 309 | error = 1; |
42224349 DG |
310 | break; |
311 | } | |
d36b8583 | 312 | } else { |
7885e399 | 313 | MSG("%s channel %s enabled for session %s", |
b9dfb167 | 314 | get_domain_str(dom.type), channel_name, session_name); |
acc09215 JRJ |
315 | success = 1; |
316 | } | |
317 | ||
1f345e94 | 318 | skip_enable: |
acc09215 JRJ |
319 | if (lttng_opt_mi) { |
320 | /* Mi print the channel element and leave it open */ | |
321 | ret = mi_lttng_channel(writer, &chan, 1); | |
322 | if (ret) { | |
323 | ret = CMD_ERROR; | |
324 | goto error; | |
325 | } | |
326 | ||
327 | /* Individual Success ? */ | |
328 | ret = mi_lttng_writer_write_element_bool(writer, | |
329 | mi_lttng_element_command_success, success); | |
330 | if (ret) { | |
331 | ret = CMD_ERROR; | |
332 | goto error; | |
333 | } | |
334 | ||
335 | /* Close channel element */ | |
336 | ret = mi_lttng_writer_close_element(writer); | |
337 | if (ret) { | |
338 | ret = CMD_ERROR; | |
339 | goto error; | |
340 | } | |
d36b8583 DG |
341 | } |
342 | ||
acc09215 | 343 | /* Next channel */ |
d36b8583 DG |
344 | channel_name = strtok(NULL, ","); |
345 | } | |
346 | ||
acc09215 JRJ |
347 | if (lttng_opt_mi) { |
348 | /* Close channels element */ | |
349 | ret = mi_lttng_writer_close_element(writer); | |
350 | if (ret) { | |
351 | ret = CMD_ERROR; | |
352 | goto error; | |
353 | } | |
354 | } | |
355 | ||
ae856491 DG |
356 | ret = CMD_SUCCESS; |
357 | ||
d36b8583 | 358 | error: |
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 | */ | |
382 | memset(&chan.attr, -1, sizeof(chan.attr)); | |
394ff38e | 383 | chan.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; |
70d0b120 | 394 | char *opt_arg = 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 DG |
406 | case OPT_DISCARD: |
407 | chan.attr.overwrite = 0; | |
408 | DBG("Channel set to discard"); | |
409 | break; | |
410 | case OPT_OVERWRITE: | |
411 | chan.attr.overwrite = 1; | |
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); | |
1cb514ce MD |
421 | if (utils_parse_size_suffix(opt_arg, &chan.attr.subbuf_size) < 0 || !chan.attr.subbuf_size) { |
422 | ERR("Wrong value in --subbuf-size parameter: %s", opt_arg); | |
70d0b120 SM |
423 | ret = CMD_ERROR; |
424 | goto end; | |
425 | } | |
426 | ||
1cb514ce MD |
427 | order = get_count_order_u64(chan.attr.subbuf_size); |
428 | assert(order >= 0); | |
429 | rounded_size = 1ULL << order; | |
06c0da96 DG |
430 | if (rounded_size < chan.attr.subbuf_size) { |
431 | ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!", | |
432 | chan.attr.subbuf_size); | |
433 | ret = CMD_ERROR; | |
434 | goto end; | |
435 | } | |
436 | ||
1cb514ce MD |
437 | if (rounded_size != chan.attr.subbuf_size) { |
438 | WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", | |
439 | chan.attr.subbuf_size, rounded_size); | |
440 | chan.attr.subbuf_size = rounded_size; | |
70d0b120 SM |
441 | } |
442 | ||
1cb514ce MD |
443 | /* Should now be power of 2 */ |
444 | assert(!((chan.attr.subbuf_size - 1) & chan.attr.subbuf_size)); | |
445 | ||
5a0de755 | 446 | DBG("Channel subbuf size set to %" PRIu64, chan.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 MD |
455 | opt_arg = poptGetOptArg(pc); |
456 | chan.attr.num_subbuf = strtoull(opt_arg, NULL, 0); | |
457 | if (errno != 0 || !chan.attr.num_subbuf || !isdigit(opt_arg[0])) { | |
458 | ERR("Wrong value in --num-subbuf parameter: %s", opt_arg); | |
16068db5 MD |
459 | ret = CMD_ERROR; |
460 | goto end; | |
461 | } | |
462 | ||
1cb514ce MD |
463 | order = get_count_order_u64(chan.attr.num_subbuf); |
464 | assert(order >= 0); | |
465 | rounded_size = 1ULL << order; | |
e123b80c | 466 | if (rounded_size < chan.attr.num_subbuf) { |
06c0da96 DG |
467 | ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!", |
468 | chan.attr.num_subbuf); | |
469 | ret = CMD_ERROR; | |
470 | goto end; | |
471 | } | |
472 | ||
1cb514ce MD |
473 | if (rounded_size != chan.attr.num_subbuf) { |
474 | WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")", | |
475 | chan.attr.num_subbuf, rounded_size); | |
476 | chan.attr.num_subbuf = rounded_size; | |
477 | } | |
478 | ||
479 | /* Should now be power of 2 */ | |
480 | assert(!((chan.attr.num_subbuf - 1) & chan.attr.num_subbuf)); | |
481 | ||
5a0de755 | 482 | DBG("Channel subbuf num set to %" PRIu64, chan.attr.num_subbuf); |
7d29a247 | 483 | break; |
1cb514ce | 484 | } |
7d29a247 | 485 | case OPT_SWITCH_TIMER: |
16068db5 MD |
486 | { |
487 | unsigned long v; | |
488 | ||
489 | errno = 0; | |
1cb514ce MD |
490 | opt_arg = poptGetOptArg(pc); |
491 | v = strtoul(opt_arg, NULL, 0); | |
492 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
493 | ERR("Wrong value in --switch-timer parameter: %s", opt_arg); | |
16068db5 MD |
494 | ret = CMD_ERROR; |
495 | goto end; | |
496 | } | |
497 | if (v != (uint32_t) v) { | |
498 | ERR("32-bit overflow in --switch-timer parameter: %s", opt_arg); | |
499 | ret = CMD_ERROR; | |
500 | goto end; | |
501 | } | |
502 | chan.attr.switch_timer_interval = (uint32_t) v; | |
7d29a247 DG |
503 | DBG("Channel switch timer interval set to %d", chan.attr.switch_timer_interval); |
504 | break; | |
16068db5 | 505 | } |
7d29a247 | 506 | case OPT_READ_TIMER: |
16068db5 MD |
507 | { |
508 | unsigned long v; | |
509 | ||
510 | errno = 0; | |
1cb514ce MD |
511 | opt_arg = poptGetOptArg(pc); |
512 | v = strtoul(opt_arg, NULL, 0); | |
513 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
514 | ERR("Wrong value in --read-timer parameter: %s", opt_arg); | |
16068db5 MD |
515 | ret = CMD_ERROR; |
516 | goto end; | |
517 | } | |
518 | if (v != (uint32_t) v) { | |
519 | ERR("32-bit overflow in --read-timer parameter: %s", opt_arg); | |
520 | ret = CMD_ERROR; | |
521 | goto end; | |
522 | } | |
523 | chan.attr.read_timer_interval = (uint32_t) v; | |
7d29a247 | 524 | DBG("Channel read timer interval set to %d", chan.attr.read_timer_interval); |
d36b8583 | 525 | break; |
16068db5 | 526 | } |
eeac7d46 MD |
527 | case OPT_USERSPACE: |
528 | opt_userspace = 1; | |
eeac7d46 | 529 | break; |
1624d5b7 | 530 | case OPT_TRACEFILE_SIZE: |
1cb514ce | 531 | opt_arg = poptGetOptArg(pc); |
16068db5 | 532 | if (utils_parse_size_suffix(opt_arg, &chan.attr.tracefile_size) < 0) { |
1cb514ce | 533 | ERR("Wrong value in --tracefile-size parameter: %s", opt_arg); |
16068db5 MD |
534 | ret = CMD_ERROR; |
535 | goto end; | |
536 | } | |
1624d5b7 JD |
537 | DBG("Maximum tracefile size set to %" PRIu64, |
538 | chan.attr.tracefile_size); | |
539 | break; | |
540 | case OPT_TRACEFILE_COUNT: | |
16068db5 MD |
541 | { |
542 | unsigned long v; | |
543 | ||
544 | errno = 0; | |
1cb514ce MD |
545 | opt_arg = poptGetOptArg(pc); |
546 | v = strtoul(opt_arg, NULL, 0); | |
547 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
548 | ERR("Wrong value in --tracefile-count parameter: %s", opt_arg); | |
16068db5 MD |
549 | ret = CMD_ERROR; |
550 | goto end; | |
551 | } | |
552 | if (v != (uint32_t) v) { | |
553 | ERR("32-bit overflow in --tracefile-count parameter: %s", opt_arg); | |
554 | ret = CMD_ERROR; | |
555 | goto end; | |
556 | } | |
557 | chan.attr.tracefile_count = (uint32_t) v; | |
1624d5b7 JD |
558 | DBG("Maximum tracefile count set to %" PRIu64, |
559 | chan.attr.tracefile_count); | |
560 | break; | |
16068db5 | 561 | } |
679b4943 SM |
562 | case OPT_LIST_OPTIONS: |
563 | list_cmd_options(stdout, long_options); | |
679b4943 | 564 | goto end; |
d36b8583 DG |
565 | default: |
566 | usage(stderr); | |
567 | ret = CMD_UNDEFINED; | |
568 | goto end; | |
569 | } | |
570 | } | |
571 | ||
3ecec76a PP |
572 | ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace); |
573 | if (ret) { | |
574 | ret = CMD_ERROR; | |
575 | goto end; | |
576 | } | |
577 | ||
acc09215 JRJ |
578 | /* Mi check */ |
579 | if (lttng_opt_mi) { | |
580 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
581 | if (!writer) { | |
582 | ret = -LTTNG_ERR_NOMEM; | |
583 | goto end; | |
584 | } | |
585 | ||
586 | /* Open command element */ | |
587 | ret = mi_lttng_writer_command_open(writer, | |
588 | mi_lttng_element_command_enable_channels); | |
589 | if (ret) { | |
590 | ret = CMD_ERROR; | |
591 | goto end; | |
592 | } | |
593 | ||
594 | /* Open output element */ | |
595 | ret = mi_lttng_writer_open_element(writer, | |
596 | mi_lttng_element_command_output); | |
597 | if (ret) { | |
598 | ret = CMD_ERROR; | |
599 | goto end; | |
600 | } | |
601 | } | |
602 | ||
d36b8583 DG |
603 | opt_channels = (char*) poptGetArg(pc); |
604 | if (opt_channels == NULL) { | |
7d29a247 | 605 | ERR("Missing channel name.\n"); |
d36b8583 | 606 | usage(stderr); |
ca1c3607 | 607 | ret = CMD_ERROR; |
acc09215 JRJ |
608 | success = 0; |
609 | goto mi_closing; | |
d36b8583 DG |
610 | } |
611 | ||
cd80958d DG |
612 | if (!opt_session_name) { |
613 | session_name = get_session_name(); | |
614 | if (session_name == NULL) { | |
acc09215 JRJ |
615 | command_ret = CMD_ERROR; |
616 | success = 0; | |
617 | goto mi_closing; | |
cd80958d DG |
618 | } |
619 | } else { | |
620 | session_name = opt_session_name; | |
621 | } | |
622 | ||
acc09215 JRJ |
623 | command_ret = enable_channel(session_name); |
624 | if (command_ret) { | |
625 | success = 0; | |
626 | } | |
627 | ||
628 | mi_closing: | |
629 | /* Mi closing */ | |
630 | if (lttng_opt_mi) { | |
631 | /* Close output element */ | |
632 | ret = mi_lttng_writer_close_element(writer); | |
633 | if (ret) { | |
634 | goto end; | |
635 | } | |
636 | ||
637 | /* Success ? */ | |
638 | ret = mi_lttng_writer_write_element_bool(writer, | |
639 | mi_lttng_element_command_success, success); | |
640 | if (ret) { | |
641 | goto end; | |
642 | } | |
643 | ||
644 | /* Command element close */ | |
645 | ret = mi_lttng_writer_command_close(writer); | |
646 | if (ret) { | |
647 | goto end; | |
648 | } | |
649 | } | |
d36b8583 DG |
650 | |
651 | end: | |
acc09215 JRJ |
652 | /* Mi clean-up */ |
653 | if (writer && mi_lttng_writer_destroy(writer)) { | |
654 | /* Preserve original error code */ | |
655 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
656 | } | |
657 | ||
5853fd43 DG |
658 | if (!opt_session_name && session_name) { |
659 | free(session_name); | |
660 | } | |
acc09215 JRJ |
661 | |
662 | /* Overwrite ret if an error occurred when enable_channel */ | |
663 | ret = command_ret ? command_ret : ret; | |
ca1c3607 | 664 | poptFreeContext(pc); |
d36b8583 DG |
665 | return ret; |
666 | } |