Commit | Line | Data |
---|---|---|
f3ed775e 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. | |
f3ed775e 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. | |
f3ed775e DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
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> |
8f0d098b | 27 | #include <ctype.h> |
f3ed775e | 28 | |
c399183f | 29 | #include "../command.h" |
f3ed775e DG |
30 | |
31 | static char *opt_event_list; | |
32 | static int opt_event_type; | |
0cda4f28 MD |
33 | static const char *opt_loglevel; |
34 | static int opt_loglevel_type; | |
6181537c | 35 | static int opt_kernel; |
5440dc42 | 36 | static char *opt_session_name; |
f3ed775e DG |
37 | static int opt_userspace; |
38 | static int opt_enable_all; | |
cf0e5467 | 39 | static char *opt_probe; |
8f0d098b MD |
40 | static char *opt_function; |
41 | static char *opt_function_entry_symbol; | |
f3ed775e | 42 | static char *opt_channel_name; |
d78d6610 DG |
43 | #if 0 |
44 | /* Not implemented yet */ | |
45 | static char *opt_cmd_name; | |
46 | static pid_t opt_pid; | |
47 | #endif | |
f3ed775e DG |
48 | |
49 | enum { | |
50 | OPT_HELP = 1, | |
f3ed775e | 51 | OPT_TRACEPOINT, |
cf0e5467 | 52 | OPT_PROBE, |
f3ed775e | 53 | OPT_FUNCTION, |
8f0d098b | 54 | OPT_FUNCTION_ENTRY, |
a54bd42d | 55 | OPT_SYSCALL, |
eeac7d46 | 56 | OPT_USERSPACE, |
0cda4f28 MD |
57 | OPT_LOGLEVEL, |
58 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 59 | OPT_LIST_OPTIONS, |
f3ed775e DG |
60 | }; |
61 | ||
cd80958d DG |
62 | static struct lttng_handle *handle; |
63 | ||
f3ed775e DG |
64 | static struct poptOption long_options[] = { |
65 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
66 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 67 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 68 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
69 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
70 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 DG |
71 | #if 0 |
72 | /* Not implemented yet */ | |
40e9d5d3 | 73 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e | 74 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
75 | #else |
76 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
77 | #endif | |
f3ed775e | 78 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 79 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 80 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
81 | #if 0 |
82 | /* | |
83 | * Currently removed from lttng kernel tracer. Removed from | |
84 | * lttng UI to discourage its use. | |
85 | */ | |
40e9d5d3 | 86 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 87 | #endif |
7ebae521 | 88 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
89 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
90 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 91 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
92 | {0, 0, 0, 0, 0, 0, 0} |
93 | }; | |
94 | ||
95 | /* | |
96 | * usage | |
97 | */ | |
98 | static void usage(FILE *ofp) | |
99 | { | |
100 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); | |
101 | fprintf(ofp, "\n"); | |
102 | fprintf(ofp, " -h, --help Show this help\n"); | |
679b4943 | 103 | fprintf(ofp, " --list-options Simple listing of options\n"); |
27221701 DG |
104 | fprintf(ofp, " -s, --session Apply to session name\n"); |
105 | fprintf(ofp, " -c, --channel Apply to this channel\n"); | |
e08bff8d | 106 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
f3ed775e | 107 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
d78d6610 | 108 | #if 0 |
27221701 | 109 | fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer\n"); |
e14f64a8 DG |
110 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
111 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
112 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
d78d6610 | 113 | #else |
27221701 | 114 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
d78d6610 | 115 | #endif |
f3ed775e DG |
116 | fprintf(ofp, "\n"); |
117 | fprintf(ofp, "Event options:\n"); | |
118 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
119 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
120 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
121 | fprintf(ofp, " e.g.:\n"); | |
122 | fprintf(ofp, " \"*\"\n"); | |
123 | fprintf(ofp, " \"app_component:na*\"\n"); | |
8f0d098b | 124 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
125 | fprintf(ofp, " Dynamic probe.\n"); |
126 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
127 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
128 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
129 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
130 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
131 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 132 | #if 0 |
8f0d098b MD |
133 | fprintf(ofp, " --function:entry symbol\n"); |
134 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 135 | #endif |
a54bd42d | 136 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 137 | fprintf(ofp, "\n"); |
300b8fd5 MD |
138 | fprintf(ofp, " --loglevel name\n"); |
139 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); | |
140 | fprintf(ofp, " --loglevel-only name\n"); | |
141 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
142 | fprintf(ofp, "\n"); | |
0c8477c8 MD |
143 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
144 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); | |
145 | fprintf(ofp, " wildcard.\n"); | |
146 | fprintf(ofp, " Available loglevels:\n"); | |
147 | fprintf(ofp, " (higher value is more verbose)\n"); | |
46839cc2 MD |
148 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
149 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
150 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
151 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
152 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
153 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
154 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
155 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); | |
156 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); | |
157 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); | |
158 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); | |
159 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); | |
160 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); | |
161 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); | |
162 | fprintf(ofp, " TRACE_DEBUG = 14\n"); | |
163 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); | |
300b8fd5 | 164 | fprintf(ofp, "\n"); |
f3ed775e DG |
165 | } |
166 | ||
0d63dd19 | 167 | /* |
6181537c | 168 | * Parse probe options. |
0d63dd19 | 169 | */ |
cf0e5467 | 170 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
171 | { |
172 | int ret; | |
8ff0bbd0 | 173 | char s_hex[19]; |
0d63dd19 DG |
174 | char name[LTTNG_SYMBOL_NAME_LEN]; |
175 | ||
176 | if (opt == NULL) { | |
177 | ret = -1; | |
8f0d098b | 178 | goto end; |
0d63dd19 DG |
179 | } |
180 | ||
181 | /* Check for symbol+offset */ | |
8ff0bbd0 | 182 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 183 | if (ret == 2) { |
7d29a247 | 184 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 185 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 186 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
187 | if (strlen(s_hex) == 0) { |
188 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 189 | ret = -1; |
8f0d098b | 190 | goto end; |
0d63dd19 | 191 | } |
8ff0bbd0 | 192 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 193 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 194 | ev->attr.probe.addr = 0; |
8f0d098b MD |
195 | goto end; |
196 | } | |
197 | ||
198 | /* Check for symbol */ | |
199 | if (isalpha(name[0])) { | |
200 | ret = sscanf(opt, "%s", name); | |
201 | if (ret == 1) { | |
202 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 203 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
204 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
205 | ev->attr.probe.offset = 0; | |
206 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
207 | ev->attr.probe.addr = 0; | |
208 | goto end; | |
209 | } | |
0d63dd19 DG |
210 | } |
211 | ||
212 | /* Check for address */ | |
8ff0bbd0 | 213 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 214 | if (ret > 0) { |
8ff0bbd0 DG |
215 | if (strlen(s_hex) == 0) { |
216 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 217 | ret = -1; |
8f0d098b | 218 | goto end; |
0d63dd19 | 219 | } |
8ff0bbd0 | 220 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 221 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
222 | ev->attr.probe.offset = 0; |
223 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 224 | goto end; |
0d63dd19 DG |
225 | } |
226 | ||
227 | /* No match */ | |
228 | ret = -1; | |
229 | ||
8f0d098b | 230 | end: |
0d63dd19 DG |
231 | return ret; |
232 | } | |
233 | ||
8005f29a | 234 | /* |
0c8477c8 | 235 | * Maps loglevel from string to value |
8005f29a MD |
236 | */ |
237 | static | |
46839cc2 | 238 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 239 | { |
46839cc2 MD |
240 | int i = 0; |
241 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
242 | ||
243 | while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) { | |
244 | str[i] = toupper(inputstr[i]); | |
245 | i++; | |
246 | } | |
247 | str[i] = '\0'; | |
248 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
249 | return LTTNG_LOGLEVEL_EMERG; | |
250 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
251 | return LTTNG_LOGLEVEL_ALERT; | |
252 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
253 | return LTTNG_LOGLEVEL_CRIT; | |
254 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
255 | return LTTNG_LOGLEVEL_ERR; | |
256 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
257 | return LTTNG_LOGLEVEL_WARNING; | |
258 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
259 | return LTTNG_LOGLEVEL_NOTICE; | |
260 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
261 | return LTTNG_LOGLEVEL_INFO; | |
262 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
263 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
264 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
265 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
266 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
267 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
268 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
269 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
270 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
271 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
272 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
273 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
274 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
275 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
276 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
277 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
278 | } else { |
279 | return -1; | |
280 | } | |
281 | } | |
282 | ||
f3ed775e | 283 | /* |
6181537c | 284 | * Enabling event using the lttng API. |
f3ed775e | 285 | */ |
cd80958d | 286 | static int enable_events(char *session_name) |
f3ed775e | 287 | { |
ae856491 | 288 | int err, ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 289 | char *event_name, *channel_name = NULL; |
f3ed775e | 290 | struct lttng_event ev; |
7d29a247 | 291 | struct lttng_domain dom; |
f3ed775e | 292 | |
441c16a7 MD |
293 | memset(&ev, 0, sizeof(ev)); |
294 | memset(&dom, 0, sizeof(dom)); | |
295 | ||
7d29a247 DG |
296 | /* Create lttng domain */ |
297 | if (opt_kernel) { | |
298 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 299 | } else if (opt_userspace) { |
2bdd86d4 | 300 | dom.type = LTTNG_DOMAIN_UST; |
6181537c | 301 | } else { |
e14f64a8 | 302 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 303 | ret = CMD_ERROR; |
6181537c | 304 | goto error; |
2bdd86d4 | 305 | } |
7d29a247 | 306 | |
ae856491 DG |
307 | if (opt_channel_name == NULL) { |
308 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
309 | if (err < 0) { | |
310 | ret = CMD_FATAL; | |
311 | goto error; | |
312 | } | |
313 | } else { | |
314 | channel_name = opt_channel_name; | |
315 | } | |
316 | ||
cd80958d DG |
317 | handle = lttng_create_handle(session_name, &dom); |
318 | if (handle == NULL) { | |
319 | ret = -1; | |
320 | goto error; | |
321 | } | |
1aef21b6 | 322 | |
cd80958d | 323 | if (opt_enable_all) { |
8c9ae521 | 324 | /* Default setup for enable all */ |
75e8c5ab MD |
325 | if (opt_kernel) { |
326 | ev.type = opt_event_type; | |
327 | ev.name[0] = '\0'; | |
300b8fd5 MD |
328 | /* kernel loglevels not implemented */ |
329 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
330 | } else { |
331 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
332 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
333 | ev.loglevel_type = opt_loglevel_type; |
334 | if (opt_loglevel) { | |
335 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
336 | if (ev.loglevel == -1) { | |
337 | ERR("Unknown loglevel %s", opt_loglevel); | |
338 | ret = -1; | |
339 | goto error; | |
340 | } | |
22e25b71 MD |
341 | } else { |
342 | ev.loglevel = -1; | |
300b8fd5 | 343 | } |
75e8c5ab | 344 | } |
8c9ae521 DG |
345 | |
346 | ret = lttng_enable_event(handle, &ev, channel_name); | |
347 | if (ret < 0) { | |
348 | goto error; | |
349 | } | |
350 | ||
0133c199 MD |
351 | switch (opt_event_type) { |
352 | case LTTNG_EVENT_TRACEPOINT: | |
57064ada MD |
353 | if (opt_loglevel) { |
354 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", | |
355 | opt_kernel ? "kernel" : "UST", channel_name, | |
356 | opt_loglevel); | |
357 | } else { | |
358 | MSG("All %s tracepoints are enabled in channel %s", | |
359 | opt_kernel ? "kernel" : "UST", channel_name); | |
360 | ||
361 | } | |
0133c199 | 362 | break; |
a54bd42d | 363 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 364 | if (opt_kernel) { |
8c9ae521 DG |
365 | MSG("All kernel system calls are enabled in channel %s", |
366 | channel_name); | |
c93d9daf | 367 | } |
0133c199 | 368 | break; |
7a3d1328 | 369 | case LTTNG_EVENT_ALL: |
57064ada MD |
370 | if (opt_loglevel) { |
371 | MSG("All %s events are enabled in channel %s for loglevel %s", | |
372 | opt_kernel ? "kernel" : "UST", channel_name, | |
373 | opt_loglevel); | |
374 | } else { | |
375 | MSG("All %s events are enabled in channel %s", | |
376 | opt_kernel ? "kernel" : "UST", channel_name); | |
377 | } | |
7a3d1328 | 378 | break; |
0133c199 | 379 | default: |
8c9ae521 | 380 | /* |
6181537c DG |
381 | * We should not be here since lttng_enable_event should have |
382 | * failed on the event type. | |
8c9ae521 | 383 | */ |
f3ed775e DG |
384 | goto error; |
385 | } | |
8c9ae521 | 386 | goto end; |
f3ed775e DG |
387 | } |
388 | ||
389 | /* Strip event list */ | |
390 | event_name = strtok(opt_event_list, ","); | |
391 | while (event_name != NULL) { | |
6181537c DG |
392 | /* Copy name and type of the event */ |
393 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
394 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
395 | ev.type = opt_event_type; | |
396 | ||
f3ed775e DG |
397 | /* Kernel tracer action */ |
398 | if (opt_kernel) { | |
399 | DBG("Enabling kernel event %s for channel %s", | |
400 | event_name, channel_name); | |
f3ed775e DG |
401 | |
402 | switch (opt_event_type) { | |
7a3d1328 MD |
403 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
404 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
405 | /* Fall-through */ | |
e6ddca71 | 406 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 407 | break; |
7d29a247 | 408 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 409 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 410 | if (ret < 0) { |
cf0e5467 | 411 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
412 | ret = 0; |
413 | goto error; | |
414 | } | |
f3ed775e DG |
415 | break; |
416 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
417 | ret = parse_probe_opts(&ev, opt_function); |
418 | if (ret < 0) { | |
419 | ERR("Unable to parse function probe options"); | |
420 | ret = 0; | |
421 | goto error; | |
422 | } | |
423 | break; | |
424 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
425 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
426 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 427 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 428 | break; |
a54bd42d | 429 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
430 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
431 | "for all syscalls."); | |
f3ed775e | 432 | default: |
1ab1ea0b | 433 | ret = CMD_UNDEFINED; |
f3ed775e DG |
434 | goto error; |
435 | } | |
0cda4f28 | 436 | |
ed7f4083 | 437 | if (opt_loglevel) { |
0cda4f28 MD |
438 | MSG("Kernel loglevels are not supported."); |
439 | ret = CMD_UNDEFINED; | |
440 | goto error; | |
441 | } | |
442 | ||
443 | /* kernel loglevels not implemented */ | |
8005f29a | 444 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 445 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 446 | #if 0 |
e14f64a8 DG |
447 | if (opt_cmd_name != NULL || opt_pid) { |
448 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 449 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
450 | goto error; |
451 | } | |
d78d6610 | 452 | #endif |
6181537c | 453 | |
300b8fd5 MD |
454 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
455 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
456 | |
457 | switch (opt_event_type) { | |
458 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
459 | /* Fall-through */ |
460 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
461 | /* Copy name and type of the event */ |
462 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
463 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
464 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
465 | break; |
466 | case LTTNG_EVENT_PROBE: | |
467 | case LTTNG_EVENT_FUNCTION: | |
468 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
469 | case LTTNG_EVENT_SYSCALL: | |
470 | default: | |
cc62c0c0 | 471 | ERR("Event type not available for user-space tracing"); |
1ab1ea0b | 472 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
473 | goto error; |
474 | } | |
0cda4f28 MD |
475 | |
476 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 477 | if (opt_loglevel) { |
8005f29a MD |
478 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
479 | if (ev.loglevel == -1) { | |
480 | ERR("Unknown loglevel %s", opt_loglevel); | |
300b8fd5 | 481 | ret = -1; |
8005f29a MD |
482 | goto error; |
483 | } | |
22e25b71 MD |
484 | } else { |
485 | ev.loglevel = -1; | |
ed7f4083 | 486 | } |
f3ed775e | 487 | } else { |
e14f64a8 | 488 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 489 | ret = CMD_ERROR; |
f3ed775e DG |
490 | goto error; |
491 | } | |
492 | ||
6181537c | 493 | ret = lttng_enable_event(handle, &ev, channel_name); |
ae856491 DG |
494 | if (ret < 0) { |
495 | ERR("Event %s: %s (channel %s, session %s)", event_name, | |
496 | lttng_strerror(ret), channel_name, session_name); | |
497 | warn = 1; | |
498 | } else { | |
6181537c DG |
499 | MSG("%s event %s created in channel %s", |
500 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
501 | } | |
502 | ||
f3ed775e DG |
503 | /* Next event */ |
504 | event_name = strtok(NULL, ","); | |
505 | } | |
506 | ||
8c9ae521 | 507 | end: |
f3ed775e | 508 | error: |
ae856491 DG |
509 | if (warn) { |
510 | ret = CMD_WARNING; | |
511 | } | |
b73d0b29 MD |
512 | if (opt_channel_name == NULL) { |
513 | free(channel_name); | |
514 | } | |
cd80958d DG |
515 | lttng_destroy_handle(handle); |
516 | ||
f3ed775e DG |
517 | return ret; |
518 | } | |
519 | ||
520 | /* | |
6181537c | 521 | * Add event to trace session |
f3ed775e DG |
522 | */ |
523 | int cmd_enable_events(int argc, const char **argv) | |
524 | { | |
ca1c3607 | 525 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 526 | static poptContext pc; |
cd80958d | 527 | char *session_name = NULL; |
f3ed775e DG |
528 | |
529 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
530 | poptReadDefaultConfig(pc, 0); | |
531 | ||
532 | /* Default event type */ | |
7a3d1328 | 533 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
534 | |
535 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
536 | switch (opt) { | |
537 | case OPT_HELP: | |
ca1c3607 | 538 | usage(stdout); |
f3ed775e | 539 | goto end; |
f3ed775e | 540 | case OPT_TRACEPOINT: |
e6ddca71 | 541 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 542 | break; |
cf0e5467 | 543 | case OPT_PROBE: |
7d29a247 | 544 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
545 | break; |
546 | case OPT_FUNCTION: | |
547 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
548 | break; |
549 | case OPT_FUNCTION_ENTRY: | |
550 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 551 | break; |
a54bd42d MD |
552 | case OPT_SYSCALL: |
553 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 554 | break; |
eeac7d46 MD |
555 | case OPT_USERSPACE: |
556 | opt_userspace = 1; | |
eeac7d46 | 557 | break; |
0cda4f28 | 558 | case OPT_LOGLEVEL: |
8005f29a | 559 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
560 | opt_loglevel = poptGetOptArg(pc); |
561 | break; | |
562 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 563 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 564 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 565 | break; |
679b4943 SM |
566 | case OPT_LIST_OPTIONS: |
567 | list_cmd_options(stdout, long_options); | |
679b4943 | 568 | goto end; |
f3ed775e DG |
569 | default: |
570 | usage(stderr); | |
571 | ret = CMD_UNDEFINED; | |
572 | goto end; | |
573 | } | |
574 | } | |
575 | ||
576 | opt_event_list = (char*) poptGetArg(pc); | |
577 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
578 | ERR("Missing event name(s).\n"); | |
579 | usage(stderr); | |
ca1c3607 | 580 | ret = CMD_ERROR; |
f3ed775e DG |
581 | goto end; |
582 | } | |
583 | ||
cd80958d DG |
584 | if (!opt_session_name) { |
585 | session_name = get_session_name(); | |
586 | if (session_name == NULL) { | |
ca1c3607 | 587 | ret = CMD_ERROR; |
cd80958d DG |
588 | goto end; |
589 | } | |
590 | } else { | |
591 | session_name = opt_session_name; | |
592 | } | |
593 | ||
594 | ret = enable_events(session_name); | |
f3ed775e DG |
595 | |
596 | end: | |
cd80958d DG |
597 | if (opt_session_name == NULL) { |
598 | free(session_name); | |
599 | } | |
600 | ||
ca1c3607 | 601 | poptFreeContext(pc); |
f3ed775e DG |
602 | return ret; |
603 | } |