Add functions and command line for listing trace_events v3
[ust.git] / ustctl / ustctl.c
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1/* Copyright (C) 2009 Pierre-Marc Fournier
2 *
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
7 *
8 * This library 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 GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
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18#define _GNU_SOURCE
19#include <stdio.h>
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20#include <unistd.h>
21#include <getopt.h>
22#include <stdlib.h>
fbd8191b 23#include <fcntl.h>
fbd8191b 24
d6c9f207 25#include "ust/ustcmd.h"
2028e7fd 26#include "usterr.h"
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27
28enum command {
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29 CREATE_TRACE=1000,
30 ALLOC_TRACE,
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31 START_TRACE,
32 STOP_TRACE,
b0a5a08b 33 DESTROY_TRACE,
ae937656 34 LIST_MARKERS,
a3adfb05 35 LIST_TRACE_EVENTS,
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36 ENABLE_MARKER,
37 DISABLE_MARKER,
38 GET_ONLINE_PIDS,
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DS
39 SET_SUBBUF_SIZE,
40 SET_SUBBUF_NUM,
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DS
41 GET_SUBBUF_SIZE,
42 GET_SUBBUF_NUM,
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43 GET_SOCK_PATH,
44 SET_SOCK_PATH,
b9318b35 45 FORCE_SWITCH,
ae937656 46 UNKNOWN
ef290fca 47};
fbd8191b 48
52c51a47 49struct ust_opts {
ae937656 50 enum command cmd;
52c51a47 51 pid_t *pids;
08230db7 52 char *regex;
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53};
54
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55char *progname = NULL;
56
57void usage(void)
58{
ae937656 59 fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname);
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60 fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
61\n\
62Commands:\n\
62ec620f 63 --create-trace\t\t\tCreate trace\n\
4ed9f99d 64 --alloc-trace\t\t\tAlloc trace\n\
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65 --start-trace\t\t\tStart tracing\n\
66 --stop-trace\t\t\tStop tracing\n\
67 --destroy-trace\t\t\tDestroy the trace\n\
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68 --set-subbuf-size \"CHANNEL/bytes\"\tSet the size of subbuffers per channel\n\
69 --set-subbuf-num \"CHANNEL/n\"\tSet the number of subbuffers per channel\n\
b2fb2f91 70 --set-sock-path\t\t\tSet the path of the daemon socket\n\
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DS
71 --get-subbuf-size \"CHANNEL\"\t\tGet the size of subbuffers per channel\n\
72 --get-subbuf-num \"CHANNEL\"\t\tGet the number of subbuffers per channel\n\
b2fb2f91 73 --get-sock-path\t\t\tGet the path of the daemon socket\n\
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74 --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
75 --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
76 --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\
a3adfb05 77 --list-trace-events\t\t\tList the trace-events of the process\n\
b9318b35 78 --force-switch\t\t\tForce a subbuffer switch\n\
ae937656 79\
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80");
81}
82
52c51a47 83int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
fbd8191b 84{
52c51a47 85 int c;
52c51a47 86
52c51a47 87 opts->pids = NULL;
ef290fca 88 opts->regex = NULL;
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89
90 while (1) {
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91 int option_index = 0;
92 static struct option long_options[] = {
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93 { "create-trace", 0, 0, CREATE_TRACE },
94 { "alloc-trace", 0, 0, ALLOC_TRACE },
95 { "start-trace", 0, 0, START_TRACE },
96 { "stop-trace", 0, 0, STOP_TRACE },
97 { "destroy-trace", 0, 0, DESTROY_TRACE },
98 { "list-markers", 0, 0, LIST_MARKERS },
a3adfb05 99 { "list-trace-events", 0, 0, LIST_TRACE_EVENTS},
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100 { "enable-marker", 1, 0, ENABLE_MARKER },
101 { "disable-marker", 1, 0, DISABLE_MARKER },
102 { "help", 0, 0, 'h' },
103 { "online-pids", 0, 0, GET_ONLINE_PIDS },
104 { "set-subbuf-size", 1, 0, SET_SUBBUF_SIZE },
105 { "set-subbuf-num", 1, 0, SET_SUBBUF_NUM },
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106 { "get-subbuf-size", 1, 0, GET_SUBBUF_SIZE },
107 { "get-subbuf-num", 1, 0, GET_SUBBUF_NUM },
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108 { "get-sock-path", 0, 0, GET_SOCK_PATH },
109 { "set-sock-path", 1, 0, SET_SOCK_PATH },
b9318b35 110 { "force-switch", 0, 0, FORCE_SWITCH },
b0a5a08b 111 { 0, 0, 0, 0 }
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112 };
113
d373b5cd 114 c = getopt_long(argc, argv, "h", long_options, &option_index);
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115 if (c == -1)
116 break;
117
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118 if(c >= 1000)
119 opts->cmd = c;
120
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121 switch (c) {
122 case 0:
123 printf("option %s", long_options[option_index].name);
124 if (optarg)
125 printf(" with arg %s", optarg);
126 printf("\n");
127 break;
128
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129 case ENABLE_MARKER:
130 case DISABLE_MARKER:
131 case SET_SUBBUF_SIZE:
132 case SET_SUBBUF_NUM:
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133 case GET_SUBBUF_SIZE:
134 case GET_SUBBUF_NUM:
b2fb2f91 135 case SET_SOCK_PATH:
ef290fca 136 opts->regex = strdup(optarg);
ae937656 137 break;
b0a5a08b 138
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139 case 'h':
140 usage();
141 exit(0);
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142
143 case '?':
144 fprintf(stderr, "Invalid argument\n\n");
145 usage();
146 exit(1);
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147 }
148 }
149
772030fe 150 if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
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151 int i;
152 int pididx=0;
7032c7d3 153 opts->pids = zmalloc((argc-optind+1) * sizeof(pid_t));
fbd8191b 154
52c51a47 155 for(i=optind; i<argc; i++) {
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156 /* don't take any chances, use a long long */
157 long long tmp;
158 char *endptr;
159 tmp = strtoull(argv[i], &endptr, 10);
160 if(*endptr != '\0') {
161 ERR("The pid \"%s\" is invalid.", argv[i]);
162 return 1;
163 }
164 opts->pids[pididx++] = (pid_t) tmp;
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165 }
166 opts->pids[pididx] = -1;
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167 }
168
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169 return 0;
170}
fbd8191b 171
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172int main(int argc, char *argv[])
173{
52c51a47 174 pid_t *pidit;
52c51a47 175 int result;
1e620c53 176 int retval = EXIT_SUCCESS;
b2fb2f91 177 char *tmp;
52c51a47 178 struct ust_opts opts;
fbd8191b 179
52c51a47 180 progname = argv[0];
fbd8191b 181
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182 if(argc <= 1) {
183 fprintf(stderr, "No operation specified.\n");
184 usage();
185 exit(EXIT_FAILURE);
186 }
187
188 result = parse_opts_long(argc, argv, &opts);
189 if(result) {
08230db7 190 fprintf(stderr, "\n");
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191 usage();
192 exit(EXIT_FAILURE);
193 }
194
ae937656 195 if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) {
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196 fprintf(stderr, "No pid specified.\n");
197 usage();
198 exit(EXIT_FAILURE);
199 }
ae937656 200 if(opts.cmd == UNKNOWN) {
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201 fprintf(stderr, "No command specified.\n");
202 usage();
203 exit(EXIT_FAILURE);
204 }
ae937656 205 if (opts.cmd == GET_ONLINE_PIDS) {
08230db7 206 pid_t *pp = ustcmd_get_online_pids();
ae937656 207 unsigned int i = 0;
52c51a47 208
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209 if (pp) {
210 while (pp[i] != 0) {
211 printf("%u\n", (unsigned int) pp[i]);
212 ++i;
213 }
214 free(pp);
52c51a47 215 }
ef290fca 216
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217 exit(EXIT_SUCCESS);
218 }
52c51a47 219
ae937656 220 pidit = opts.pids;
08230db7 221 struct marker_status *cmsf = NULL;
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222 struct trace_event_status *tes = NULL;
223 unsigned int i = 0;
ef290fca 224
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225 while(*pidit != -1) {
226 switch (opts.cmd) {
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227 case CREATE_TRACE:
228 result = ustcmd_create_trace(*pidit);
229 if (result) {
230 ERR("error while trying to create trace with PID %u\n", (unsigned int) *pidit);
1e620c53 231 retval = EXIT_FAILURE;
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232 break;
233 }
234 break;
235
ae937656 236 case START_TRACE:
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237 result = ustcmd_start_trace(*pidit);
238 if (result) {
239 ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit);
1e620c53 240 retval = EXIT_FAILURE;
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241 break;
242 }
ae937656 243 break;
ef290fca 244
ae937656 245 case STOP_TRACE:
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246 result = ustcmd_stop_trace(*pidit);
247 if (result) {
248 ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit);
1e620c53 249 retval = EXIT_FAILURE;
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250 break;
251 }
ae937656 252 break;
ef290fca 253
b0a5a08b 254 case DESTROY_TRACE:
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255 result = ustcmd_destroy_trace(*pidit);
256 if (result) {
257 ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit);
1e620c53 258 retval = EXIT_FAILURE;
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259 break;
260 }
ae937656 261 break;
ef290fca 262
ae937656 263 case LIST_MARKERS:
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264 cmsf = NULL;
265 if (ustcmd_get_cmsf(&cmsf, *pidit)) {
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266 ERR("error while trying to list markers for PID %u\n", (unsigned int) *pidit);
267 retval = EXIT_FAILURE;
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268 break;
269 }
a3adfb05 270 i = 0;
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271 while (cmsf[i].channel != NULL) {
272 printf("{PID: %u, channel/marker: %s/%s, "
264f6231 273 "state: %u, fmt: %s}\n",
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274 (unsigned int) *pidit,
275 cmsf[i].channel,
276 cmsf[i].marker,
277 cmsf[i].state,
278 cmsf[i].fs);
279 ++i;
280 }
281 ustcmd_free_cmsf(cmsf);
ae937656 282 break;
ef290fca 283
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284 case LIST_TRACE_EVENTS:
285 tes = NULL;
286 if (ustcmd_get_tes(&tes, *pidit)) {
287 ERR("error while trying to list "
288 "trace_events for PID %u\n",
289 (unsigned int) *pidit);
290 break;
291 }
292 i = 0;
293 while (tes[i].name != NULL) {
294 printf("{PID: %u, trace_event: %s}\n",
295 (unsigned int) *pidit,
296 tes[i].name);
297 ++i;
298 }
299 ustcmd_free_tes(tes);
300
301 break;
ae937656 302 case ENABLE_MARKER:
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303 if (opts.regex) {
304 if (ustcmd_set_marker_state(opts.regex, 1, *pidit)) {
305 ERR("error while trying to enable marker %s with PID %u\n",
306 opts.regex, (unsigned int) *pidit);
307 retval = EXIT_FAILURE;
308 }
309 }
ee648b8f 310 break;
ae937656 311 case DISABLE_MARKER:
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312 if (opts.regex) {
313 if (ustcmd_set_marker_state(opts.regex, 0, *pidit)) {
314 ERR("error while trying to disable marker %s with PID %u\n",
315 opts.regex, (unsigned int) *pidit);
316 retval = EXIT_FAILURE;
317 }
318 }
ee648b8f 319 break;
ef290fca 320
763f41e5 321 case SET_SUBBUF_SIZE:
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DG
322 if (opts.regex) {
323 if (ustcmd_set_subbuf_size(opts.regex, *pidit)) {
324 ERR("error while trying to set the size of subbuffers with PID %u\n",
325 (unsigned int) *pidit);
326 retval = EXIT_FAILURE;
327 }
328 }
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DS
329 break;
330
331 case SET_SUBBUF_NUM:
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DG
332 if (opts.regex) {
333 if (ustcmd_set_subbuf_num(opts.regex, *pidit)) {
334 ERR("error while trying to set the number of subbuffers with PID %u\n",
335 (unsigned int) *pidit);
336 retval = EXIT_FAILURE;
337 }
338 }
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DS
339 break;
340
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DS
341 case GET_SUBBUF_SIZE:
342 result = ustcmd_get_subbuf_size(opts.regex, *pidit);
343 if (result == -1) {
344 ERR("error while trying to get_subuf_size with PID %u\n", (unsigned int) *pidit);
1e620c53 345 retval = EXIT_FAILURE;
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DS
346 break;
347 }
348
349 printf("the size of subbufers is %d\n", result);
350 break;
351
352 case GET_SUBBUF_NUM:
353 result = ustcmd_get_subbuf_num(opts.regex, *pidit);
354 if (result == -1) {
355 ERR("error while trying to get_subuf_num with PID %u\n", (unsigned int) *pidit);
1e620c53 356 retval = EXIT_FAILURE;
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DS
357 break;
358 }
359
360 printf("the number of subbufers is %d\n", result);
361 break;
362
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DS
363 case ALLOC_TRACE:
364 result = ustcmd_alloc_trace(*pidit);
365 if (result) {
366 ERR("error while trying to alloc trace with PID %u\n", (unsigned int) *pidit);
1e620c53 367 retval = EXIT_FAILURE;
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DS
368 }
369 break;
370
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AH
371 case GET_SOCK_PATH:
372 result = ustcmd_get_sock_path(&tmp, *pidit);
373 if (result) {
374 ERR("error while trying to get sock path for PID %u\n", (unsigned int) *pidit);
1e620c53 375 retval = EXIT_FAILURE;
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AH
376 break;
377 }
378 printf("the socket path is %s\n", tmp);
379 free(tmp);
380 break;
381
382 case SET_SOCK_PATH:
383 result = ustcmd_set_sock_path(opts.regex, *pidit);
384 if (result) {
385 ERR("error while trying to set sock path for PID %u\n", (unsigned int) *pidit);
1e620c53 386 retval = EXIT_FAILURE;
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AH
387 }
388 break;
389
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AH
390 case FORCE_SWITCH:
391 result = ustcmd_force_switch(*pidit);
392 if (result) {
393 ERR("error while trying to force switch for PID %u\n", (unsigned int) *pidit);
1e620c53 394 retval = EXIT_FAILURE;
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AH
395 }
396 break;
397
ae937656 398 default:
08230db7 399 ERR("unknown command\n");
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DG
400 retval = EXIT_FAILURE;
401 break;
ae937656 402 }
ef290fca 403
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404 pidit++;
405 }
82b1a169 406
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407 if (opts.pids != NULL) {
408 free(opts.pids);
409 }
410 if (opts.regex != NULL) {
411 free(opts.regex);
ae937656 412 }
fbd8191b 413
1e620c53 414 return retval;
fbd8191b 415}
ae937656 416
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