Commit | Line | Data |
---|---|---|
826d496d MD |
1 | /* |
2 | * Copyright (c) 2011 David Goulet <david.goulet@polymtl.ca> | |
fac6795d DG |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify | |
d14d33bf AM |
5 | * it under the terms of the GNU General Public License, version 2 only, |
6 | * as published by the Free Software Foundation. | |
fac6795d 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 | * | |
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. | |
fac6795d DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
fac6795d | 20 | #include <getopt.h> |
f3ed775e | 21 | #include <signal.h> |
fac6795d DG |
22 | #include <stdio.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
8db8d1dc DG |
25 | #include <sys/types.h> |
26 | #include <sys/wait.h> | |
fac6795d | 27 | #include <unistd.h> |
3bd1e081 | 28 | #include <config.h> |
730389d9 | 29 | #include <ctype.h> |
fac6795d | 30 | |
5b97ec60 | 31 | #include <lttng/lttng.h> |
db758600 | 32 | #include <common/error.h> |
e8fa9fb0 | 33 | #include <common/compat/getenv.h> |
fac6795d | 34 | |
c399183f | 35 | #include "command.h" |
fac6795d DG |
36 | |
37 | /* Variables */ | |
38 | static char *progname; | |
f3ed775e DG |
39 | static int opt_no_sessiond; |
40 | static char *opt_sessiond_path; | |
8db8d1dc | 41 | static pid_t sessiond_pid; |
5a532b68 | 42 | static volatile int recv_child_signal; |
f3ed775e | 43 | |
8960e9cd DG |
44 | char *opt_relayd_path; |
45 | ||
f3ed775e | 46 | enum { |
8960e9cd | 47 | OPT_RELAYD_PATH, |
f3ed775e | 48 | OPT_SESSION_PATH, |
865abf65 SM |
49 | OPT_DUMP_OPTIONS, |
50 | OPT_DUMP_COMMANDS, | |
f3ed775e DG |
51 | }; |
52 | ||
53 | /* Getopt options. No first level command. */ | |
54 | static struct option long_options[] = { | |
70318c38 | 55 | {"version", 0, NULL, 'V'}, |
f3ed775e DG |
56 | {"help", 0, NULL, 'h'}, |
57 | {"group", 1, NULL, 'g'}, | |
58 | {"verbose", 0, NULL, 'v'}, | |
59 | {"quiet", 0, NULL, 'q'}, | |
c7e35b03 | 60 | {"mi", 1, NULL, 'm'}, |
8490ae7b | 61 | {"no-sessiond", 0, NULL, 'n'}, |
f3ed775e | 62 | {"sessiond-path", 1, NULL, OPT_SESSION_PATH}, |
8960e9cd | 63 | {"relayd-path", 1, NULL, OPT_RELAYD_PATH}, |
865abf65 SM |
64 | {"list-options", 0, NULL, OPT_DUMP_OPTIONS}, |
65 | {"list-commands", 0, NULL, OPT_DUMP_COMMANDS}, | |
f3ed775e DG |
66 | {NULL, 0, NULL, 0} |
67 | }; | |
68 | ||
69 | /* First level command */ | |
70 | static struct cmd_struct commands[] = { | |
71 | { "list", cmd_list}, | |
72 | { "create", cmd_create}, | |
73 | { "destroy", cmd_destroy}, | |
f3ed775e DG |
74 | { "start", cmd_start}, |
75 | { "stop", cmd_stop}, | |
76 | { "enable-event", cmd_enable_events}, | |
e953ef25 | 77 | { "disable-event", cmd_disable_events}, |
d36b8583 | 78 | { "enable-channel", cmd_enable_channels}, |
26cc6b4e | 79 | { "disable-channel", cmd_disable_channels}, |
d65106b1 | 80 | { "add-context", cmd_add_context}, |
3087ef18 | 81 | { "set-session", cmd_set_session}, |
eb9cb8b7 | 82 | { "version", cmd_version}, |
d0254c7c | 83 | { "calibrate", cmd_calibrate}, |
0c95f5b2 | 84 | { "view", cmd_view}, |
57f272ed | 85 | { "snapshot", cmd_snapshot}, |
c864d6d7 | 86 | { "save", cmd_save}, |
8c42d845 | 87 | { "load", cmd_load}, |
ccf10263 MD |
88 | { "track", cmd_track}, |
89 | { "untrack", cmd_untrack}, | |
f3ed775e DG |
90 | { NULL, NULL} /* Array closure */ |
91 | }; | |
92 | ||
93 | static void usage(FILE *ofp) | |
8c0faa1d | 94 | { |
4c6ac053 MD |
95 | fprintf(ofp, "LTTng Trace Control " VERSION " - " VERSION_NAME "%s\n\n", |
96 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION); | |
32a6298d | 97 | fprintf(ofp, "usage: lttng [OPTIONS] <COMMAND> [<ARGS>]\n"); |
f3ed775e DG |
98 | fprintf(ofp, "\n"); |
99 | fprintf(ofp, "Options:\n"); | |
70318c38 | 100 | fprintf(ofp, " -V, --version Show version\n"); |
99bab54f TD |
101 | fprintf(ofp, " -h, --help Show this help\n"); |
102 | fprintf(ofp, " --list-options Simple listing of lttng options\n"); | |
103 | fprintf(ofp, " --list-commands Simple listing of lttng commands\n"); | |
104 | fprintf(ofp, " -v, --verbose Increase verbosity\n"); | |
105 | fprintf(ofp, " -q, --quiet Quiet mode\n"); | |
c7e35b03 JR |
106 | fprintf(ofp, " -m, --mi TYPE Machine Interface mode.\n"); |
107 | fprintf(ofp, " Type: xml\n"); | |
99bab54f TD |
108 | fprintf(ofp, " -g, --group NAME Unix tracing group name. (default: tracing)\n"); |
109 | fprintf(ofp, " -n, --no-sessiond Don't spawn a session daemon\n"); | |
110 | fprintf(ofp, " --sessiond-path PATH Session daemon full path\n"); | |
8960e9cd | 111 | fprintf(ofp, " --relayd-path PATH Relayd daemon full path\n"); |
f3ed775e DG |
112 | fprintf(ofp, "\n"); |
113 | fprintf(ofp, "Commands:\n"); | |
00e2e675 DG |
114 | fprintf(ofp, " add-context Add context to event and/or channel\n"); |
115 | fprintf(ofp, " calibrate Quantify LTTng overhead\n"); | |
116 | fprintf(ofp, " create Create tracing session\n"); | |
117 | fprintf(ofp, " destroy Tear down tracing session\n"); | |
118 | fprintf(ofp, " enable-channel Enable tracing channel\n"); | |
119 | fprintf(ofp, " enable-event Enable tracing event\n"); | |
120 | fprintf(ofp, " disable-channel Disable tracing channel\n"); | |
121 | fprintf(ofp, " disable-event Disable tracing event\n"); | |
00e2e675 DG |
122 | fprintf(ofp, " list List possible tracing options\n"); |
123 | fprintf(ofp, " set-session Set current session name\n"); | |
57f272ed | 124 | fprintf(ofp, " snapshot Snapshot buffers of current session name\n"); |
00e2e675 DG |
125 | fprintf(ofp, " start Start tracing\n"); |
126 | fprintf(ofp, " stop Stop tracing\n"); | |
127 | fprintf(ofp, " version Show version information\n"); | |
128 | fprintf(ofp, " view Start trace viewer\n"); | |
c864d6d7 | 129 | fprintf(ofp, " save Save session configuration\n"); |
8c42d845 | 130 | fprintf(ofp, " load Load session configuration\n"); |
ccf10263 MD |
131 | fprintf(ofp, " track Track specific system resources\n"); |
132 | fprintf(ofp, " untrack Untrack specific system resources\n"); | |
f3ed775e | 133 | fprintf(ofp, "\n"); |
99bab54f TD |
134 | fprintf(ofp, "Each command also has its own -h, --help option.\n"); |
135 | fprintf(ofp, "\n"); | |
f3ed775e DG |
136 | fprintf(ofp, "Please see the lttng(1) man page for full documentation.\n"); |
137 | fprintf(ofp, "See http://lttng.org for updates, bug reports and news.\n"); | |
8c0faa1d DG |
138 | } |
139 | ||
70318c38 SS |
140 | static void version(FILE *ofp) |
141 | { | |
4c6ac053 MD |
142 | fprintf(ofp, "%s (LTTng Trace Control) " VERSION" - " VERSION_NAME "%s\n", |
143 | progname, | |
144 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION); | |
70318c38 SS |
145 | } |
146 | ||
c7e35b03 JR |
147 | /* |
148 | * Find the MI output type enum from a string. This function is for the support | |
149 | * of machine interface output. | |
150 | */ | |
151 | static int mi_output_type(const char *output_type) | |
152 | { | |
153 | int ret = 0; | |
154 | ||
155 | if (!strncasecmp("xml", output_type, 3)) { | |
156 | ret = LTTNG_MI_XML; | |
157 | } else { | |
158 | /* Invalid output format */ | |
159 | ERR("MI output format not supported"); | |
160 | ret = -LTTNG_ERR_MI_OUTPUT_TYPE; | |
161 | } | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
865abf65 SM |
166 | /* |
167 | * list_options | |
168 | * | |
169 | * List options line by line. This is mostly for bash auto completion and to | |
170 | * avoid difficult parsing. | |
171 | */ | |
172 | static void list_options(FILE *ofp) | |
173 | { | |
174 | int i = 0; | |
175 | struct option *option = NULL; | |
176 | ||
177 | option = &long_options[i]; | |
178 | while (option->name != NULL) { | |
179 | fprintf(ofp, "--%s\n", option->name); | |
180 | ||
181 | if (isprint(option->val)) { | |
182 | fprintf(ofp, "-%c\n", option->val); | |
183 | } | |
184 | ||
185 | i++; | |
186 | option = &long_options[i]; | |
187 | } | |
188 | } | |
189 | ||
7442b2ba | 190 | /* |
f3ed775e | 191 | * clean_exit |
96243366 | 192 | */ |
f3ed775e | 193 | static void clean_exit(int code) |
96243366 | 194 | { |
f3ed775e DG |
195 | DBG("Clean exit"); |
196 | exit(code); | |
894be886 | 197 | } |
96243366 | 198 | |
894be886 | 199 | /* |
f3ed775e | 200 | * sighandler |
2ef84c95 | 201 | * |
f3ed775e | 202 | * Signal handler for the daemon |
2ef84c95 | 203 | */ |
f3ed775e | 204 | static void sighandler(int sig) |
2ef84c95 | 205 | { |
8db8d1dc DG |
206 | int status; |
207 | ||
f3ed775e DG |
208 | switch (sig) { |
209 | case SIGTERM: | |
99bab54f | 210 | DBG("SIGTERM caught"); |
f3ed775e DG |
211 | clean_exit(EXIT_FAILURE); |
212 | break; | |
213 | case SIGCHLD: | |
99bab54f | 214 | DBG("SIGCHLD caught"); |
8db8d1dc | 215 | waitpid(sessiond_pid, &status, 0); |
5a532b68 | 216 | recv_child_signal = 1; |
8db8d1dc DG |
217 | /* Indicate that the session daemon died */ |
218 | sessiond_pid = 0; | |
219 | ERR("Session daemon died (exit status %d)", WEXITSTATUS(status)); | |
220 | break; | |
221 | case SIGUSR1: | |
222 | /* Notify is done */ | |
5a532b68 | 223 | recv_child_signal = 1; |
99bab54f | 224 | DBG("SIGUSR1 caught"); |
f3ed775e DG |
225 | break; |
226 | default: | |
99bab54f | 227 | DBG("Unknown signal %d caught", sig); |
f3ed775e | 228 | break; |
2ef84c95 DG |
229 | } |
230 | ||
f3ed775e | 231 | return; |
2ef84c95 DG |
232 | } |
233 | ||
234 | /* | |
f3ed775e | 235 | * set_signal_handler |
894be886 | 236 | * |
f3ed775e | 237 | * Setup signal handler for SIGCHLD and SIGTERM. |
894be886 | 238 | */ |
f3ed775e | 239 | static int set_signal_handler(void) |
894be886 | 240 | { |
f3ed775e DG |
241 | int ret = 0; |
242 | struct sigaction sa; | |
243 | sigset_t sigset; | |
33a2b854 | 244 | |
f3ed775e | 245 | if ((ret = sigemptyset(&sigset)) < 0) { |
6f04ed72 | 246 | PERROR("sigemptyset"); |
33a2b854 DG |
247 | goto end; |
248 | } | |
249 | ||
f3ed775e DG |
250 | sa.sa_handler = sighandler; |
251 | sa.sa_mask = sigset; | |
252 | sa.sa_flags = 0; | |
8db8d1dc | 253 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
6f04ed72 | 254 | PERROR("sigaction"); |
96243366 DG |
255 | goto end; |
256 | } | |
257 | ||
f3ed775e | 258 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
6f04ed72 | 259 | PERROR("sigaction"); |
f3ed775e | 260 | goto end; |
894be886 DG |
261 | } |
262 | ||
8db8d1dc | 263 | if ((ret = sigaction(SIGCHLD, &sa, NULL)) < 0) { |
6f04ed72 | 264 | PERROR("sigaction"); |
8db8d1dc DG |
265 | goto end; |
266 | } | |
267 | ||
96243366 | 268 | end: |
57167058 DG |
269 | return ret; |
270 | } | |
271 | ||
fac6795d | 272 | /* |
f3ed775e | 273 | * handle_command |
fac6795d | 274 | * |
f3ed775e DG |
275 | * Handle the full argv list of a first level command. Will find the command |
276 | * in the global commands array and call the function callback associated. | |
1c9f7941 | 277 | * |
f3ed775e DG |
278 | * If command not found, return -1 |
279 | * else, return function command error code. | |
1c9f7941 | 280 | */ |
f3ed775e | 281 | static int handle_command(int argc, char **argv) |
1c9f7941 | 282 | { |
f3ed775e DG |
283 | int i = 0, ret; |
284 | struct cmd_struct *cmd; | |
1c9f7941 | 285 | |
f3ed775e DG |
286 | if (*argv == NULL) { |
287 | ret = CMD_SUCCESS; | |
47b74d63 | 288 | goto end; |
1c9f7941 DG |
289 | } |
290 | ||
f3ed775e DG |
291 | cmd = &commands[i]; |
292 | while (cmd->func != NULL) { | |
293 | /* Find command */ | |
294 | if (strcmp(argv[0], cmd->name) == 0) { | |
295 | ret = cmd->func(argc, (const char**) argv); | |
f3ed775e | 296 | goto end; |
894be886 | 297 | } |
f3ed775e DG |
298 | i++; |
299 | cmd = &commands[i]; | |
894be886 DG |
300 | } |
301 | ||
f3ed775e | 302 | /* Command not found */ |
4ce78777 | 303 | ret = CMD_UNDEFINED; |
894be886 DG |
304 | |
305 | end: | |
f3ed775e | 306 | return ret; |
8548ff30 DG |
307 | } |
308 | ||
5b8719f5 DG |
309 | /* |
310 | * spawn_sessiond | |
311 | * | |
312 | * Spawn a session daemon by forking and execv. | |
313 | */ | |
314 | static int spawn_sessiond(char *pathname) | |
315 | { | |
316 | int ret = 0; | |
317 | pid_t pid; | |
318 | ||
f3ed775e | 319 | MSG("Spawning a session daemon"); |
5a532b68 | 320 | recv_child_signal = 0; |
5b8719f5 DG |
321 | pid = fork(); |
322 | if (pid == 0) { | |
5e16da05 MD |
323 | /* |
324 | * Spawn session daemon and tell | |
5b8719f5 DG |
325 | * it to signal us when ready. |
326 | */ | |
32258573 | 327 | execlp(pathname, "lttng-sessiond", "--sig-parent", "--quiet", NULL); |
5e16da05 MD |
328 | /* execlp only returns if error happened */ |
329 | if (errno == ENOENT) { | |
330 | ERR("No session daemon found. Use --sessiond-path."); | |
331 | } else { | |
6f04ed72 | 332 | PERROR("execlp"); |
5b8719f5 | 333 | } |
5a532b68 | 334 | kill(getppid(), SIGTERM); /* wake parent */ |
5e16da05 | 335 | exit(EXIT_FAILURE); |
5b8719f5 | 336 | } else if (pid > 0) { |
8db8d1dc | 337 | sessiond_pid = pid; |
5a532b68 | 338 | /* |
af87c45a DG |
339 | * Wait for lttng-sessiond to start. We need to use a flag to check if |
340 | * the signal has been sent to us, because the child can be scheduled | |
341 | * before the parent, and thus send the signal before this check. In | |
342 | * the signal handler, we set the recv_child_signal flag, so anytime we | |
343 | * check it after the fork is fine. Note that sleep() is interrupted | |
344 | * before the 1 second delay as soon as the signal is received, so it | |
345 | * will not cause visible delay for the user. | |
5a532b68 MD |
346 | */ |
347 | while (!recv_child_signal) { | |
348 | sleep(1); | |
349 | } | |
af87c45a DG |
350 | /* |
351 | * The signal handler will nullify sessiond_pid on SIGCHLD | |
352 | */ | |
8db8d1dc DG |
353 | if (!sessiond_pid) { |
354 | exit(EXIT_FAILURE); | |
355 | } | |
5b8719f5 DG |
356 | goto end; |
357 | } else { | |
6f04ed72 | 358 | PERROR("fork"); |
5b8719f5 DG |
359 | ret = -1; |
360 | goto end; | |
361 | } | |
362 | ||
363 | end: | |
364 | return ret; | |
365 | } | |
366 | ||
fac6795d | 367 | /* |
f3ed775e | 368 | * check_sessiond |
fac6795d DG |
369 | * |
370 | * Check if the session daemon is available using | |
5b8719f5 DG |
371 | * the liblttngctl API for the check. If not, try to |
372 | * spawn a daemon. | |
fac6795d | 373 | */ |
f3ed775e | 374 | static int check_sessiond(void) |
fac6795d DG |
375 | { |
376 | int ret; | |
b8ec3da8 | 377 | char *pathname = NULL; |
fac6795d | 378 | |
947308c4 DG |
379 | ret = lttng_session_daemon_alive(); |
380 | if (ret == 0) { /* not alive */ | |
5b8719f5 | 381 | /* Try command line option path */ |
b8ec3da8 SM |
382 | pathname = opt_sessiond_path; |
383 | ||
384 | /* Try LTTNG_SESSIOND_PATH env variable */ | |
385 | if (pathname == NULL) { | |
bbccc3d2 | 386 | pathname = getenv(DEFAULT_SESSIOND_PATH_ENV); |
5b8719f5 DG |
387 | } |
388 | ||
b8ec3da8 | 389 | /* Try with configured path */ |
5b8719f5 | 390 | if (pathname == NULL) { |
b8ec3da8 SM |
391 | if (CONFIG_SESSIOND_BIN[0] != '\0') { |
392 | pathname = CONFIG_SESSIOND_BIN; | |
5b8719f5 | 393 | } |
b8ec3da8 SM |
394 | } |
395 | ||
396 | /* Let's rock and roll while trying the default path */ | |
397 | if (pathname == NULL) { | |
398 | pathname = INSTALL_BIN_PATH "/lttng-sessiond"; | |
399 | } | |
400 | ||
401 | DBG("Session daemon at: %s", pathname); | |
402 | ||
403 | /* Check existence and permissions */ | |
404 | ret = access(pathname, F_OK | X_OK); | |
405 | if (ret < 0) { | |
406 | ERR("No such file or access denied: %s", pathname); | |
407 | goto end; | |
5b8719f5 DG |
408 | } |
409 | ||
410 | ret = spawn_sessiond(pathname); | |
5b8719f5 | 411 | if (ret < 0) { |
3183dbb0 | 412 | ERR("Problem occurred when starting %s", pathname); |
5b8719f5 | 413 | } |
c2a79a67 | 414 | } |
5b8719f5 | 415 | end: |
fac6795d DG |
416 | return ret; |
417 | } | |
418 | ||
bcfa8a05 | 419 | /* |
679b4943 SM |
420 | * Check args for specific options that *must* not trigger a session daemon |
421 | * execution. | |
422 | * | |
423 | * Return 1 if match else 0. | |
bcfa8a05 | 424 | */ |
679b4943 | 425 | static int check_args_no_sessiond(int argc, char **argv) |
bcfa8a05 DG |
426 | { |
427 | int i; | |
428 | ||
429 | for (i = 0; i < argc; i++) { | |
ba2926ef MD |
430 | if ((strncmp(argv[i], "-h", sizeof("-h")) == 0) || |
431 | strncmp(argv[i], "--h", sizeof("--h")) == 0 || | |
3183dbb0 | 432 | strncmp(argv[i], "--list-options", sizeof("--list-options")) == 0 || |
4747a49b | 433 | strncmp(argv[i], "--list-commands", sizeof("--list-commands")) == 0 || |
0c95f5b2 DG |
434 | strncmp(argv[i], "version", sizeof("version")) == 0 || |
435 | strncmp(argv[i], "view", sizeof("view")) == 0) { | |
bcfa8a05 DG |
436 | return 1; |
437 | } | |
438 | } | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
5b8719f5 | 443 | /* |
3183dbb0 | 444 | * Parse command line arguments. |
5b8719f5 | 445 | * |
3183dbb0 | 446 | * Return 0 if OK, else -1 |
5b8719f5 | 447 | */ |
f3ed775e | 448 | static int parse_args(int argc, char **argv) |
5b8719f5 | 449 | { |
f3ed775e | 450 | int opt, ret; |
883d80f9 | 451 | char *user; |
5b8719f5 | 452 | |
e8fa9fb0 MD |
453 | if (lttng_is_setuid_setgid()) { |
454 | ERR("'%s' is not allowed to be executed as a setuid/setgid binary for security reasons. Aborting.", argv[0]); | |
455 | clean_exit(EXIT_FAILURE); | |
456 | } | |
457 | ||
f3ed775e DG |
458 | if (argc < 2) { |
459 | usage(stderr); | |
460 | clean_exit(EXIT_FAILURE); | |
5b8719f5 DG |
461 | } |
462 | ||
c7e35b03 | 463 | while ((opt = getopt_long(argc, argv, "+Vhnvqg:m:", long_options, NULL)) != -1) { |
f3ed775e | 464 | switch (opt) { |
70318c38 SS |
465 | case 'V': |
466 | version(stdout); | |
467 | ret = 0; | |
468 | goto end; | |
f3ed775e | 469 | case 'h': |
3183dbb0 | 470 | usage(stdout); |
ae856491 | 471 | ret = 0; |
3183dbb0 | 472 | goto end; |
f3ed775e | 473 | case 'v': |
849e5b7b DG |
474 | /* There is only 3 possible level of verbosity. (-vvv) */ |
475 | if (lttng_opt_verbose < 3) { | |
476 | lttng_opt_verbose += 1; | |
477 | } | |
f3ed775e DG |
478 | break; |
479 | case 'q': | |
97e19046 | 480 | lttng_opt_quiet = 1; |
f3ed775e | 481 | break; |
c7e35b03 JR |
482 | case 'm': |
483 | lttng_opt_mi = mi_output_type(optarg); | |
484 | if (lttng_opt_mi < 0) { | |
485 | ret = lttng_opt_mi; | |
486 | goto error; | |
487 | } | |
488 | break; | |
f3ed775e DG |
489 | case 'g': |
490 | lttng_set_tracing_group(optarg); | |
491 | break; | |
8490ae7b | 492 | case 'n': |
f3ed775e DG |
493 | opt_no_sessiond = 1; |
494 | break; | |
495 | case OPT_SESSION_PATH: | |
496 | opt_sessiond_path = strdup(optarg); | |
d7c5d39f MD |
497 | if (!opt_sessiond_path) { |
498 | ret = -1; | |
499 | goto error; | |
500 | } | |
f3ed775e | 501 | break; |
8960e9cd DG |
502 | case OPT_RELAYD_PATH: |
503 | opt_relayd_path = strdup(optarg); | |
d7c5d39f MD |
504 | if (!opt_relayd_path) { |
505 | ret = -1; | |
506 | goto error; | |
507 | } | |
8960e9cd | 508 | break; |
865abf65 SM |
509 | case OPT_DUMP_OPTIONS: |
510 | list_options(stdout); | |
511 | ret = 0; | |
3183dbb0 | 512 | goto end; |
865abf65 | 513 | case OPT_DUMP_COMMANDS: |
3c9bd23c | 514 | list_commands(commands, stdout); |
865abf65 | 515 | ret = 0; |
3183dbb0 | 516 | goto end; |
f3ed775e DG |
517 | default: |
518 | usage(stderr); | |
ae856491 | 519 | ret = 1; |
f3ed775e DG |
520 | goto error; |
521 | } | |
5b8719f5 | 522 | } |
fac6795d | 523 | |
f3ed775e | 524 | /* If both options are specified, quiet wins */ |
97e19046 DG |
525 | if (lttng_opt_verbose && lttng_opt_quiet) { |
526 | lttng_opt_verbose = 0; | |
5b8719f5 DG |
527 | } |
528 | ||
f3ed775e | 529 | /* Spawn session daemon if needed */ |
679b4943 | 530 | if (opt_no_sessiond == 0 && check_args_no_sessiond(argc, argv) == 0 && |
bcfa8a05 | 531 | (check_sessiond() < 0)) { |
8005f29a | 532 | ret = 1; |
f3ed775e | 533 | goto error; |
5b8719f5 DG |
534 | } |
535 | ||
f3ed775e DG |
536 | /* No leftovers, print usage and quit */ |
537 | if ((argc - optind) == 0) { | |
538 | usage(stderr); | |
8005f29a | 539 | ret = 1; |
f3ed775e DG |
540 | goto error; |
541 | } | |
7442b2ba | 542 | |
883d80f9 DG |
543 | /* For Mathieu Desnoyers a.k.a. Dr. Tracing */ |
544 | user = getenv("USER"); | |
545 | if (user != NULL && ((strncmp(progname, "drtrace", 7) == 0 || | |
546 | strncmp("compudj", user, 7) == 0))) { | |
547 | MSG("%c[%d;%dmWelcome back Dr Tracing!%c[%dm\n", 27,1,33,27,0); | |
548 | } | |
549 | /* Thanks Mathieu */ | |
550 | ||
f3ed775e DG |
551 | /* |
552 | * Handle leftovers which is a first level command with the trailing | |
553 | * options. | |
554 | */ | |
555 | ret = handle_command(argc - optind, argv + optind); | |
ae856491 DG |
556 | switch (ret) { |
557 | case CMD_WARNING: | |
558 | WARN("Some command(s) went wrong"); | |
559 | break; | |
560 | case CMD_ERROR: | |
561 | ERR("Command error"); | |
562 | break; | |
563 | case CMD_UNDEFINED: | |
564 | ERR("Undefined command"); | |
565 | break; | |
566 | case CMD_FATAL: | |
567 | ERR("Fatal error"); | |
568 | break; | |
4ce78777 DG |
569 | case CMD_UNSUPPORTED: |
570 | ERR("Unsupported command"); | |
571 | break; | |
ae856491 DG |
572 | case -1: |
573 | usage(stderr); | |
574 | ret = 1; | |
575 | break; | |
576 | case 0: | |
577 | break; | |
578 | default: | |
42224349 DG |
579 | if (ret < 0) { |
580 | ret = -ret; | |
581 | } | |
ae856491 | 582 | break; |
96243366 DG |
583 | } |
584 | ||
3183dbb0 | 585 | end: |
f3ed775e | 586 | error: |
ae856491 | 587 | return ret; |
fac6795d DG |
588 | } |
589 | ||
f3ed775e | 590 | |
fac6795d | 591 | /* |
5b8719f5 | 592 | * main |
fac6795d DG |
593 | */ |
594 | int main(int argc, char *argv[]) | |
595 | { | |
596 | int ret; | |
597 | ||
598 | progname = argv[0] ? argv[0] : "lttng"; | |
599 | ||
5b8719f5 DG |
600 | ret = set_signal_handler(); |
601 | if (ret < 0) { | |
87378cf5 | 602 | clean_exit(ret); |
5b8719f5 DG |
603 | } |
604 | ||
f3ed775e | 605 | ret = parse_args(argc, argv); |
ae856491 DG |
606 | if (ret != 0) { |
607 | clean_exit(ret); | |
1fff1faa | 608 | } |
87378cf5 | 609 | |
fac6795d DG |
610 | return 0; |
611 | } |