Commit | Line | Data |
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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
82a3637f DG |
6 | * as published by the Free Software Foundation; only version 2 |
7 | * of the License. | |
f3ed775e DG |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #define _GNU_SOURCE | |
20 | #include <popt.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
5a0de755 | 27 | #include <inttypes.h> |
8f0d098b | 28 | #include <ctype.h> |
f3ed775e | 29 | |
c399183f | 30 | #include "../command.h" |
f3ed775e DG |
31 | |
32 | static char *opt_event_list; | |
33 | static int opt_event_type; | |
0cda4f28 MD |
34 | static const char *opt_loglevel; |
35 | static int opt_loglevel_type; | |
6181537c | 36 | static int opt_kernel; |
5440dc42 | 37 | static char *opt_session_name; |
f3ed775e DG |
38 | static int opt_userspace; |
39 | static int opt_enable_all; | |
cf0e5467 | 40 | static char *opt_probe; |
8f0d098b MD |
41 | static char *opt_function; |
42 | static char *opt_function_entry_symbol; | |
f3ed775e | 43 | static char *opt_channel_name; |
d78d6610 DG |
44 | #if 0 |
45 | /* Not implemented yet */ | |
46 | static char *opt_cmd_name; | |
47 | static pid_t opt_pid; | |
48 | #endif | |
f3ed775e DG |
49 | |
50 | enum { | |
51 | OPT_HELP = 1, | |
f3ed775e | 52 | OPT_TRACEPOINT, |
cf0e5467 | 53 | OPT_PROBE, |
f3ed775e | 54 | OPT_FUNCTION, |
8f0d098b | 55 | OPT_FUNCTION_ENTRY, |
a54bd42d | 56 | OPT_SYSCALL, |
eeac7d46 | 57 | OPT_USERSPACE, |
0cda4f28 MD |
58 | OPT_LOGLEVEL, |
59 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 60 | OPT_LIST_OPTIONS, |
f3ed775e DG |
61 | }; |
62 | ||
cd80958d DG |
63 | static struct lttng_handle *handle; |
64 | ||
f3ed775e DG |
65 | static struct poptOption long_options[] = { |
66 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
67 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 68 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 69 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
70 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
71 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 DG |
72 | #if 0 |
73 | /* Not implemented yet */ | |
40e9d5d3 | 74 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e | 75 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
76 | #else |
77 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
78 | #endif | |
f3ed775e | 79 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 80 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 81 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
82 | #if 0 |
83 | /* | |
84 | * Currently removed from lttng kernel tracer. Removed from | |
85 | * lttng UI to discourage its use. | |
86 | */ | |
40e9d5d3 | 87 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 88 | #endif |
7ebae521 | 89 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
90 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
91 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 92 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
93 | {0, 0, 0, 0, 0, 0, 0} |
94 | }; | |
95 | ||
96 | /* | |
97 | * usage | |
98 | */ | |
99 | static void usage(FILE *ofp) | |
100 | { | |
101 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); | |
102 | fprintf(ofp, "\n"); | |
103 | fprintf(ofp, " -h, --help Show this help\n"); | |
679b4943 | 104 | fprintf(ofp, " --list-options Simple listing of options\n"); |
27221701 DG |
105 | fprintf(ofp, " -s, --session Apply to session name\n"); |
106 | fprintf(ofp, " -c, --channel Apply to this channel\n"); | |
e14f64a8 | 107 | fprintf(ofp, " -a, --all Enable all tracepoints\n"); |
f3ed775e | 108 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
d78d6610 | 109 | #if 0 |
27221701 | 110 | fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer\n"); |
e14f64a8 DG |
111 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
112 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
113 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
d78d6610 | 114 | #else |
27221701 | 115 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
d78d6610 | 116 | #endif |
f3ed775e DG |
117 | fprintf(ofp, "\n"); |
118 | fprintf(ofp, "Event options:\n"); | |
119 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
120 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
121 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
122 | fprintf(ofp, " e.g.:\n"); | |
123 | fprintf(ofp, " \"*\"\n"); | |
124 | fprintf(ofp, " \"app_component:na*\"\n"); | |
8f0d098b | 125 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
126 | fprintf(ofp, " Dynamic probe.\n"); |
127 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
128 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
129 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
130 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
131 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
132 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 133 | #if 0 |
8f0d098b MD |
134 | fprintf(ofp, " --function:entry symbol\n"); |
135 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 136 | #endif |
a54bd42d | 137 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 138 | fprintf(ofp, "\n"); |
300b8fd5 MD |
139 | fprintf(ofp, " --loglevel name\n"); |
140 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); | |
141 | fprintf(ofp, " --loglevel-only name\n"); | |
142 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
143 | fprintf(ofp, "\n"); | |
144 | fprintf(ofp, " The loglevel or loglevel-only options should be combined\n"); | |
145 | fprintf(ofp, " with a tracepoint name (or tracepoint wildcard).\n"); | |
146 | fprintf(ofp, " Available loglevels: (higher value means more verbose)\n"); | |
147 | fprintf(ofp, " TRACE_EMERG = 0\n"); | |
148 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
149 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
150 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
151 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
152 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
153 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
154 | fprintf(ofp, " TRACE_SYSTEM = 7\n"); | |
155 | fprintf(ofp, " TRACE_PROCESS = 8\n"); | |
156 | fprintf(ofp, " TRACE_MODULE = 9\n"); | |
157 | fprintf(ofp, " TRACE_UNIT = 10\n"); | |
158 | fprintf(ofp, " TRACE_CLASS = 11\n"); | |
159 | fprintf(ofp, " TRACE_OBJECT = 12\n"); | |
160 | fprintf(ofp, " TRACE_FUNCTION = 13\n"); | |
161 | fprintf(ofp, " TRACE_PRINTF = 14\n"); | |
162 | fprintf(ofp, " TRACE_DEBUG = 15\n"); | |
163 | fprintf(ofp, "\n"); | |
f3ed775e DG |
164 | } |
165 | ||
0d63dd19 | 166 | /* |
6181537c | 167 | * Parse probe options. |
0d63dd19 | 168 | */ |
cf0e5467 | 169 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
170 | { |
171 | int ret; | |
8ff0bbd0 | 172 | char s_hex[19]; |
0d63dd19 DG |
173 | char name[LTTNG_SYMBOL_NAME_LEN]; |
174 | ||
175 | if (opt == NULL) { | |
176 | ret = -1; | |
8f0d098b | 177 | goto end; |
0d63dd19 DG |
178 | } |
179 | ||
180 | /* Check for symbol+offset */ | |
8ff0bbd0 | 181 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 182 | if (ret == 2) { |
7d29a247 | 183 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 184 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 185 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
186 | if (strlen(s_hex) == 0) { |
187 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 188 | ret = -1; |
8f0d098b | 189 | goto end; |
0d63dd19 | 190 | } |
8ff0bbd0 | 191 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 192 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 193 | ev->attr.probe.addr = 0; |
8f0d098b MD |
194 | goto end; |
195 | } | |
196 | ||
197 | /* Check for symbol */ | |
198 | if (isalpha(name[0])) { | |
199 | ret = sscanf(opt, "%s", name); | |
200 | if (ret == 1) { | |
201 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 202 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
203 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
204 | ev->attr.probe.offset = 0; | |
205 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
206 | ev->attr.probe.addr = 0; | |
207 | goto end; | |
208 | } | |
0d63dd19 DG |
209 | } |
210 | ||
211 | /* Check for address */ | |
8ff0bbd0 | 212 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 213 | if (ret > 0) { |
8ff0bbd0 DG |
214 | if (strlen(s_hex) == 0) { |
215 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 216 | ret = -1; |
8f0d098b | 217 | goto end; |
0d63dd19 | 218 | } |
8ff0bbd0 | 219 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 220 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
221 | ev->attr.probe.offset = 0; |
222 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 223 | goto end; |
0d63dd19 DG |
224 | } |
225 | ||
226 | /* No match */ | |
227 | ret = -1; | |
228 | ||
8f0d098b | 229 | end: |
0d63dd19 DG |
230 | return ret; |
231 | } | |
232 | ||
8005f29a MD |
233 | /* |
234 | * Maps this from string to value | |
235 | * | |
236 | * TRACE_EMERG = 0, | |
237 | * TRACE_ALERT = 1, | |
238 | * TRACE_CRIT = 2, | |
239 | * TRACE_ERR = 3, | |
240 | * TRACE_WARNING = 4, | |
241 | * TRACE_NOTICE = 5, | |
242 | * TRACE_INFO = 6, | |
243 | * TRACE_SYSTEM = 7, | |
244 | * TRACE_PROCESS = 8, | |
245 | * TRACE_MODULE = 9, | |
246 | * TRACE_UNIT = 10, | |
247 | * TRACE_CLASS = 11, | |
248 | * TRACE_OBJECT = 12, | |
249 | * TRACE_FUNCTION = 13, | |
250 | * TRACE_PRINTF = 14, | |
251 | * TRACE_DEBUG = 15, | |
252 | */ | |
253 | static | |
254 | int loglevel_str_to_value(const char *str) | |
255 | { | |
256 | if (!strcmp(str, "TRACE_EMERG")) { | |
257 | return 0; | |
258 | } else if (!strcmp(str, "TRACE_ALERT")) { | |
259 | return 1; | |
260 | } else if (!strcmp(str, "TRACE_CRIT")) { | |
261 | return 2; | |
262 | } else if (!strcmp(str, "TRACE_ERR")) { | |
263 | return 3; | |
264 | } else if (!strcmp(str, "TRACE_WARNING")) { | |
265 | return 4; | |
266 | } else if (!strcmp(str, "TRACE_NOTICE")) { | |
267 | return 5; | |
268 | } else if (!strcmp(str, "TRACE_INFO")) { | |
269 | return 6; | |
270 | } else if (!strcmp(str, "TRACE_SYSTEM")) { | |
271 | return 7; | |
272 | } else if (!strcmp(str, "TRACE_PROCESS")) { | |
273 | return 8; | |
274 | } else if (!strcmp(str, "TRACE_MODULE")) { | |
275 | return 9; | |
276 | } else if (!strcmp(str, "TRACE_UNIT")) { | |
277 | return 10; | |
278 | } else if (!strcmp(str, "TRACE_CLASS")) { | |
279 | return 11; | |
280 | } else if (!strcmp(str, "TRACE_OBJECT")) { | |
281 | return 12; | |
282 | } else if (!strcmp(str, "TRACE_FUNCTION")) { | |
283 | return 13; | |
284 | } else if (!strcmp(str, "TRACE_PRINTF")) { | |
285 | return 14; | |
286 | } else if (!strcmp(str, "TRACE_DEBUG")) { | |
287 | return 15; | |
288 | } else { | |
289 | return -1; | |
290 | } | |
291 | } | |
292 | ||
f3ed775e | 293 | /* |
6181537c | 294 | * Enabling event using the lttng API. |
f3ed775e | 295 | */ |
cd80958d | 296 | static int enable_events(char *session_name) |
f3ed775e | 297 | { |
ae856491 | 298 | int err, ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 299 | char *event_name, *channel_name = NULL; |
f3ed775e | 300 | struct lttng_event ev; |
7d29a247 | 301 | struct lttng_domain dom; |
f3ed775e | 302 | |
7d29a247 DG |
303 | /* Create lttng domain */ |
304 | if (opt_kernel) { | |
305 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 306 | } else if (opt_userspace) { |
2bdd86d4 | 307 | dom.type = LTTNG_DOMAIN_UST; |
6181537c | 308 | } else { |
e14f64a8 | 309 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 310 | ret = CMD_ERROR; |
6181537c | 311 | goto error; |
2bdd86d4 | 312 | } |
7d29a247 | 313 | |
ae856491 DG |
314 | if (opt_channel_name == NULL) { |
315 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
316 | if (err < 0) { | |
317 | ret = CMD_FATAL; | |
318 | goto error; | |
319 | } | |
320 | } else { | |
321 | channel_name = opt_channel_name; | |
322 | } | |
323 | ||
cd80958d DG |
324 | handle = lttng_create_handle(session_name, &dom); |
325 | if (handle == NULL) { | |
326 | ret = -1; | |
327 | goto error; | |
328 | } | |
1aef21b6 | 329 | |
cd80958d | 330 | if (opt_enable_all) { |
8c9ae521 | 331 | /* Default setup for enable all */ |
75e8c5ab MD |
332 | if (opt_kernel) { |
333 | ev.type = opt_event_type; | |
334 | ev.name[0] = '\0'; | |
300b8fd5 MD |
335 | /* kernel loglevels not implemented */ |
336 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
337 | } else { |
338 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
339 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
340 | ev.loglevel_type = opt_loglevel_type; |
341 | if (opt_loglevel) { | |
342 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
343 | if (ev.loglevel == -1) { | |
344 | ERR("Unknown loglevel %s", opt_loglevel); | |
345 | ret = -1; | |
346 | goto error; | |
347 | } | |
348 | } | |
75e8c5ab | 349 | } |
8c9ae521 DG |
350 | |
351 | ret = lttng_enable_event(handle, &ev, channel_name); | |
352 | if (ret < 0) { | |
353 | goto error; | |
354 | } | |
355 | ||
0133c199 MD |
356 | switch (opt_event_type) { |
357 | case LTTNG_EVENT_TRACEPOINT: | |
300b8fd5 MD |
358 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", |
359 | opt_kernel ? "kernel" : "UST", channel_name, | |
360 | opt_loglevel ? : "<all>"); | |
0133c199 | 361 | break; |
a54bd42d | 362 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 363 | if (opt_kernel) { |
8c9ae521 DG |
364 | MSG("All kernel system calls are enabled in channel %s", |
365 | channel_name); | |
c93d9daf | 366 | } |
0133c199 | 367 | break; |
7a3d1328 | 368 | case LTTNG_EVENT_ALL: |
300b8fd5 MD |
369 | MSG("All %s events are enabled in channel %s for loglevel %s", |
370 | opt_kernel ? "kernel" : "UST", channel_name, | |
371 | opt_loglevel ? : "<all>"); | |
7a3d1328 | 372 | break; |
0133c199 | 373 | default: |
8c9ae521 | 374 | /* |
6181537c DG |
375 | * We should not be here since lttng_enable_event should have |
376 | * failed on the event type. | |
8c9ae521 | 377 | */ |
f3ed775e DG |
378 | goto error; |
379 | } | |
8c9ae521 | 380 | goto end; |
f3ed775e DG |
381 | } |
382 | ||
383 | /* Strip event list */ | |
384 | event_name = strtok(opt_event_list, ","); | |
385 | while (event_name != NULL) { | |
6181537c DG |
386 | /* Copy name and type of the event */ |
387 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
388 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
389 | ev.type = opt_event_type; | |
390 | ||
f3ed775e DG |
391 | /* Kernel tracer action */ |
392 | if (opt_kernel) { | |
393 | DBG("Enabling kernel event %s for channel %s", | |
394 | event_name, channel_name); | |
f3ed775e DG |
395 | |
396 | switch (opt_event_type) { | |
7a3d1328 MD |
397 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
398 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
399 | /* Fall-through */ | |
e6ddca71 | 400 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 401 | break; |
7d29a247 | 402 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 403 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 404 | if (ret < 0) { |
cf0e5467 | 405 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
406 | ret = 0; |
407 | goto error; | |
408 | } | |
f3ed775e DG |
409 | break; |
410 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
411 | ret = parse_probe_opts(&ev, opt_function); |
412 | if (ret < 0) { | |
413 | ERR("Unable to parse function probe options"); | |
414 | ret = 0; | |
415 | goto error; | |
416 | } | |
417 | break; | |
418 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
419 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
420 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 421 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 422 | break; |
a54bd42d | 423 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
424 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
425 | "for all syscalls."); | |
f3ed775e | 426 | default: |
1ab1ea0b | 427 | ret = CMD_UNDEFINED; |
f3ed775e DG |
428 | goto error; |
429 | } | |
0cda4f28 | 430 | |
ed7f4083 | 431 | if (opt_loglevel) { |
0cda4f28 MD |
432 | MSG("Kernel loglevels are not supported."); |
433 | ret = CMD_UNDEFINED; | |
434 | goto error; | |
435 | } | |
436 | ||
437 | /* kernel loglevels not implemented */ | |
8005f29a | 438 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 439 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 440 | #if 0 |
e14f64a8 DG |
441 | if (opt_cmd_name != NULL || opt_pid) { |
442 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 443 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
444 | goto error; |
445 | } | |
d78d6610 | 446 | #endif |
6181537c | 447 | |
300b8fd5 MD |
448 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
449 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
450 | |
451 | switch (opt_event_type) { | |
452 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
453 | /* Fall-through */ |
454 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
455 | /* Copy name and type of the event */ |
456 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
457 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
458 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
459 | break; |
460 | case LTTNG_EVENT_PROBE: | |
461 | case LTTNG_EVENT_FUNCTION: | |
462 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
463 | case LTTNG_EVENT_SYSCALL: | |
464 | default: | |
cc62c0c0 | 465 | ERR("Event type not available for user-space tracing"); |
1ab1ea0b | 466 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
467 | goto error; |
468 | } | |
0cda4f28 MD |
469 | |
470 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 471 | if (opt_loglevel) { |
8005f29a MD |
472 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
473 | if (ev.loglevel == -1) { | |
474 | ERR("Unknown loglevel %s", opt_loglevel); | |
300b8fd5 | 475 | ret = -1; |
8005f29a MD |
476 | goto error; |
477 | } | |
ed7f4083 | 478 | } |
f3ed775e | 479 | } else { |
e14f64a8 | 480 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 481 | ret = CMD_ERROR; |
f3ed775e DG |
482 | goto error; |
483 | } | |
484 | ||
6181537c | 485 | ret = lttng_enable_event(handle, &ev, channel_name); |
ae856491 DG |
486 | if (ret < 0) { |
487 | ERR("Event %s: %s (channel %s, session %s)", event_name, | |
488 | lttng_strerror(ret), channel_name, session_name); | |
489 | warn = 1; | |
490 | } else { | |
6181537c DG |
491 | MSG("%s event %s created in channel %s", |
492 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
493 | } | |
494 | ||
f3ed775e DG |
495 | /* Next event */ |
496 | event_name = strtok(NULL, ","); | |
497 | } | |
498 | ||
8c9ae521 | 499 | end: |
f3ed775e | 500 | error: |
ae856491 DG |
501 | if (warn) { |
502 | ret = CMD_WARNING; | |
503 | } | |
b73d0b29 MD |
504 | if (opt_channel_name == NULL) { |
505 | free(channel_name); | |
506 | } | |
cd80958d DG |
507 | lttng_destroy_handle(handle); |
508 | ||
f3ed775e DG |
509 | return ret; |
510 | } | |
511 | ||
512 | /* | |
6181537c | 513 | * Add event to trace session |
f3ed775e DG |
514 | */ |
515 | int cmd_enable_events(int argc, const char **argv) | |
516 | { | |
ca1c3607 | 517 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 518 | static poptContext pc; |
cd80958d | 519 | char *session_name = NULL; |
f3ed775e DG |
520 | |
521 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
522 | poptReadDefaultConfig(pc, 0); | |
523 | ||
524 | /* Default event type */ | |
7a3d1328 | 525 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
526 | |
527 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
528 | switch (opt) { | |
529 | case OPT_HELP: | |
ca1c3607 | 530 | usage(stdout); |
f3ed775e | 531 | goto end; |
f3ed775e | 532 | case OPT_TRACEPOINT: |
e6ddca71 | 533 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 534 | break; |
cf0e5467 | 535 | case OPT_PROBE: |
7d29a247 | 536 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
537 | break; |
538 | case OPT_FUNCTION: | |
539 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
540 | break; |
541 | case OPT_FUNCTION_ENTRY: | |
542 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 543 | break; |
a54bd42d MD |
544 | case OPT_SYSCALL: |
545 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 546 | break; |
eeac7d46 MD |
547 | case OPT_USERSPACE: |
548 | opt_userspace = 1; | |
eeac7d46 | 549 | break; |
0cda4f28 | 550 | case OPT_LOGLEVEL: |
8005f29a | 551 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
552 | opt_loglevel = poptGetOptArg(pc); |
553 | break; | |
554 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 555 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 556 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 557 | break; |
679b4943 SM |
558 | case OPT_LIST_OPTIONS: |
559 | list_cmd_options(stdout, long_options); | |
679b4943 | 560 | goto end; |
f3ed775e DG |
561 | default: |
562 | usage(stderr); | |
563 | ret = CMD_UNDEFINED; | |
564 | goto end; | |
565 | } | |
566 | } | |
567 | ||
568 | opt_event_list = (char*) poptGetArg(pc); | |
569 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
570 | ERR("Missing event name(s).\n"); | |
571 | usage(stderr); | |
ca1c3607 | 572 | ret = CMD_ERROR; |
f3ed775e DG |
573 | goto end; |
574 | } | |
575 | ||
cd80958d DG |
576 | if (!opt_session_name) { |
577 | session_name = get_session_name(); | |
578 | if (session_name == NULL) { | |
ca1c3607 | 579 | ret = CMD_ERROR; |
cd80958d DG |
580 | goto end; |
581 | } | |
582 | } else { | |
583 | session_name = opt_session_name; | |
584 | } | |
585 | ||
586 | ret = enable_events(session_name); | |
f3ed775e DG |
587 | |
588 | end: | |
cd80958d DG |
589 | if (opt_session_name == NULL) { |
590 | free(session_name); | |
591 | } | |
592 | ||
ca1c3607 | 593 | poptFreeContext(pc); |
f3ed775e DG |
594 | return ret; |
595 | } |