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; | |
6181537c | 34 | static int opt_kernel; |
5440dc42 | 35 | static char *opt_session_name; |
f3ed775e | 36 | static int opt_userspace; |
eeac7d46 | 37 | static char *opt_cmd_name; |
f3ed775e DG |
38 | static int opt_enable_all; |
39 | static pid_t opt_pid; | |
cf0e5467 | 40 | static char *opt_probe; |
8f0d098b MD |
41 | static char *opt_function; |
42 | static char *opt_function_entry_symbol; | |
f3ed775e DG |
43 | static char *opt_channel_name; |
44 | ||
45 | enum { | |
46 | OPT_HELP = 1, | |
f3ed775e | 47 | OPT_TRACEPOINT, |
cf0e5467 | 48 | OPT_PROBE, |
f3ed775e | 49 | OPT_FUNCTION, |
8f0d098b | 50 | OPT_FUNCTION_ENTRY, |
a54bd42d | 51 | OPT_SYSCALL, |
eeac7d46 | 52 | OPT_USERSPACE, |
13dce3b7 | 53 | OPT_TRACEPOINT_LOGLEVEL, |
f3ed775e DG |
54 | }; |
55 | ||
cd80958d DG |
56 | static struct lttng_handle *handle; |
57 | ||
f3ed775e DG |
58 | static struct poptOption long_options[] = { |
59 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
60 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 61 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 62 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
63 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
64 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
40e9d5d3 | 65 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e DG |
66 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
67 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, | |
7ebae521 | 68 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 69 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
70 | #if 0 |
71 | /* | |
72 | * Currently removed from lttng kernel tracer. Removed from | |
73 | * lttng UI to discourage its use. | |
74 | */ | |
40e9d5d3 | 75 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 76 | #endif |
7ebae521 | 77 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
13dce3b7 | 78 | {"loglevel", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT_LOGLEVEL, 0, 0}, |
f3ed775e DG |
79 | {0, 0, 0, 0, 0, 0, 0} |
80 | }; | |
81 | ||
82 | /* | |
83 | * usage | |
84 | */ | |
85 | static void usage(FILE *ofp) | |
86 | { | |
87 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); | |
88 | fprintf(ofp, "\n"); | |
89 | fprintf(ofp, " -h, --help Show this help\n"); | |
5440dc42 | 90 | fprintf(ofp, " -s, --session Apply on session name\n"); |
f3ed775e | 91 | fprintf(ofp, " -c, --channel Apply on this channel\n"); |
e14f64a8 | 92 | fprintf(ofp, " -a, --all Enable all tracepoints\n"); |
f3ed775e DG |
93 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
94 | fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n"); | |
e14f64a8 DG |
95 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
96 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
97 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
f3ed775e DG |
98 | fprintf(ofp, "\n"); |
99 | fprintf(ofp, "Event options:\n"); | |
100 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
101 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
102 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
103 | fprintf(ofp, " e.g.:\n"); | |
104 | fprintf(ofp, " \"*\"\n"); | |
105 | fprintf(ofp, " \"app_component:na*\"\n"); | |
13dce3b7 | 106 | fprintf(ofp, " --loglevel Tracepoint loglevel\n"); |
8f0d098b | 107 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
108 | fprintf(ofp, " Dynamic probe.\n"); |
109 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
110 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
111 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
112 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
113 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
114 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 115 | #if 0 |
8f0d098b MD |
116 | fprintf(ofp, " --function:entry symbol\n"); |
117 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 118 | #endif |
a54bd42d | 119 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e DG |
120 | fprintf(ofp, "\n"); |
121 | } | |
122 | ||
0d63dd19 | 123 | /* |
6181537c | 124 | * Parse probe options. |
0d63dd19 | 125 | */ |
cf0e5467 | 126 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
127 | { |
128 | int ret; | |
8ff0bbd0 | 129 | char s_hex[19]; |
0d63dd19 DG |
130 | char name[LTTNG_SYMBOL_NAME_LEN]; |
131 | ||
132 | if (opt == NULL) { | |
133 | ret = -1; | |
8f0d098b | 134 | goto end; |
0d63dd19 DG |
135 | } |
136 | ||
137 | /* Check for symbol+offset */ | |
8ff0bbd0 | 138 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 139 | if (ret == 2) { |
7d29a247 | 140 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 141 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 142 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
143 | if (strlen(s_hex) == 0) { |
144 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 145 | ret = -1; |
8f0d098b | 146 | goto end; |
0d63dd19 | 147 | } |
8ff0bbd0 | 148 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 149 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 150 | ev->attr.probe.addr = 0; |
8f0d098b MD |
151 | goto end; |
152 | } | |
153 | ||
154 | /* Check for symbol */ | |
155 | if (isalpha(name[0])) { | |
156 | ret = sscanf(opt, "%s", name); | |
157 | if (ret == 1) { | |
158 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 159 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
160 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
161 | ev->attr.probe.offset = 0; | |
162 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
163 | ev->attr.probe.addr = 0; | |
164 | goto end; | |
165 | } | |
0d63dd19 DG |
166 | } |
167 | ||
168 | /* Check for address */ | |
8ff0bbd0 | 169 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 170 | if (ret > 0) { |
8ff0bbd0 DG |
171 | if (strlen(s_hex) == 0) { |
172 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 173 | ret = -1; |
8f0d098b | 174 | goto end; |
0d63dd19 | 175 | } |
8ff0bbd0 | 176 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 177 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
178 | ev->attr.probe.offset = 0; |
179 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 180 | goto end; |
0d63dd19 DG |
181 | } |
182 | ||
183 | /* No match */ | |
184 | ret = -1; | |
185 | ||
8f0d098b | 186 | end: |
0d63dd19 DG |
187 | return ret; |
188 | } | |
189 | ||
f3ed775e | 190 | /* |
6181537c | 191 | * Enabling event using the lttng API. |
f3ed775e | 192 | */ |
cd80958d | 193 | static int enable_events(char *session_name) |
f3ed775e DG |
194 | { |
195 | int err, ret = CMD_SUCCESS; | |
b73d0b29 | 196 | char *event_name, *channel_name = NULL; |
f3ed775e | 197 | struct lttng_event ev; |
7d29a247 | 198 | struct lttng_domain dom; |
f3ed775e | 199 | |
f3ed775e DG |
200 | if (opt_channel_name == NULL) { |
201 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
202 | if (err < 0) { | |
203 | ret = CMD_FATAL; | |
204 | goto error; | |
205 | } | |
206 | } else { | |
207 | channel_name = opt_channel_name; | |
208 | } | |
209 | ||
2bdd86d4 | 210 | if (opt_kernel && opt_userspace) { |
e14f64a8 | 211 | ERR("Can't use -k/--kernel and -u/--userspace together"); |
2bdd86d4 MD |
212 | ret = CMD_FATAL; |
213 | goto error; | |
214 | } | |
6181537c | 215 | |
7d29a247 DG |
216 | /* Create lttng domain */ |
217 | if (opt_kernel) { | |
218 | dom.type = LTTNG_DOMAIN_KERNEL; | |
6181537c DG |
219 | } else if (opt_pid != 0) { |
220 | dom.type = LTTNG_DOMAIN_UST_PID; | |
221 | dom.attr.pid = opt_pid; | |
222 | DBG("PID %d set to lttng handle", opt_pid); | |
223 | } else if (opt_userspace && opt_cmd_name == NULL) { | |
2bdd86d4 | 224 | dom.type = LTTNG_DOMAIN_UST; |
6181537c DG |
225 | } else if (opt_userspace && opt_cmd_name != NULL) { |
226 | dom.type = LTTNG_DOMAIN_UST_EXEC_NAME; | |
227 | strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX); | |
228 | } else { | |
e14f64a8 | 229 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
6181537c DG |
230 | ret = CMD_NOT_IMPLEMENTED; |
231 | goto error; | |
2bdd86d4 | 232 | } |
7d29a247 | 233 | |
cd80958d DG |
234 | handle = lttng_create_handle(session_name, &dom); |
235 | if (handle == NULL) { | |
236 | ret = -1; | |
237 | goto error; | |
238 | } | |
1aef21b6 | 239 | |
cd80958d | 240 | if (opt_enable_all) { |
8c9ae521 | 241 | /* Default setup for enable all */ |
75e8c5ab MD |
242 | |
243 | if (opt_kernel) { | |
244 | ev.type = opt_event_type; | |
245 | ev.name[0] = '\0'; | |
246 | } else { | |
247 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
248 | strcpy(ev.name, "*"); | |
249 | } | |
8c9ae521 DG |
250 | |
251 | ret = lttng_enable_event(handle, &ev, channel_name); | |
252 | if (ret < 0) { | |
253 | goto error; | |
254 | } | |
255 | ||
0133c199 MD |
256 | switch (opt_event_type) { |
257 | case LTTNG_EVENT_TRACEPOINT: | |
2bdd86d4 MD |
258 | MSG("All %s tracepoints are enabled in channel %s", |
259 | opt_kernel ? "kernel" : "UST", channel_name); | |
0133c199 | 260 | break; |
a54bd42d | 261 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 262 | if (opt_kernel) { |
8c9ae521 DG |
263 | MSG("All kernel system calls are enabled in channel %s", |
264 | channel_name); | |
c93d9daf | 265 | } |
0133c199 | 266 | break; |
7a3d1328 | 267 | case LTTNG_EVENT_ALL: |
2bdd86d4 MD |
268 | MSG("All %s events are enabled in channel %s", |
269 | opt_kernel ? "kernel" : "UST", channel_name); | |
7a3d1328 | 270 | break; |
0133c199 | 271 | default: |
8c9ae521 | 272 | /* |
6181537c DG |
273 | * We should not be here since lttng_enable_event should have |
274 | * failed on the event type. | |
8c9ae521 | 275 | */ |
f3ed775e DG |
276 | goto error; |
277 | } | |
8c9ae521 | 278 | goto end; |
f3ed775e DG |
279 | } |
280 | ||
281 | /* Strip event list */ | |
282 | event_name = strtok(opt_event_list, ","); | |
283 | while (event_name != NULL) { | |
6181537c DG |
284 | /* Copy name and type of the event */ |
285 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
286 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
287 | ev.type = opt_event_type; | |
288 | ||
f3ed775e DG |
289 | /* Kernel tracer action */ |
290 | if (opt_kernel) { | |
291 | DBG("Enabling kernel event %s for channel %s", | |
292 | event_name, channel_name); | |
f3ed775e DG |
293 | |
294 | switch (opt_event_type) { | |
7a3d1328 MD |
295 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
296 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
297 | /* Fall-through */ | |
e6ddca71 | 298 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 299 | break; |
7d29a247 | 300 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 301 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 302 | if (ret < 0) { |
cf0e5467 | 303 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
304 | ret = 0; |
305 | goto error; | |
306 | } | |
f3ed775e DG |
307 | break; |
308 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
309 | ret = parse_probe_opts(&ev, opt_function); |
310 | if (ret < 0) { | |
311 | ERR("Unable to parse function probe options"); | |
312 | ret = 0; | |
313 | goto error; | |
314 | } | |
315 | break; | |
316 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
317 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
318 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 319 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 320 | break; |
a54bd42d | 321 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
322 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
323 | "for all syscalls."); | |
f3ed775e DG |
324 | default: |
325 | ret = CMD_NOT_IMPLEMENTED; | |
326 | goto error; | |
327 | } | |
f3ed775e | 328 | } else if (opt_userspace) { /* User-space tracer action */ |
e14f64a8 DG |
329 | if (opt_cmd_name != NULL || opt_pid) { |
330 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
2bdd86d4 MD |
331 | ret = CMD_NOT_IMPLEMENTED; |
332 | goto error; | |
333 | } | |
6181537c DG |
334 | |
335 | DBG("Enabling UST event %s for channel %s", event_name, | |
336 | channel_name); | |
2bdd86d4 MD |
337 | |
338 | switch (opt_event_type) { | |
339 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
340 | /* Fall-through */ |
341 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
342 | /* Copy name and type of the event */ |
343 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
344 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
345 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 | 346 | break; |
13dce3b7 | 347 | case LTTNG_EVENT_TRACEPOINT_LOGLEVEL: |
e4baff1e | 348 | /* Copy name and type of the event */ |
13dce3b7 | 349 | ev.type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; |
e4baff1e MD |
350 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); |
351 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
13dce3b7 | 352 | break; |
2bdd86d4 MD |
353 | case LTTNG_EVENT_PROBE: |
354 | case LTTNG_EVENT_FUNCTION: | |
355 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
356 | case LTTNG_EVENT_SYSCALL: | |
357 | default: | |
358 | ret = CMD_NOT_IMPLEMENTED; | |
359 | goto error; | |
360 | } | |
f3ed775e | 361 | } else { |
e14f64a8 | 362 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
f3ed775e DG |
363 | goto error; |
364 | } | |
365 | ||
6181537c DG |
366 | ret = lttng_enable_event(handle, &ev, channel_name); |
367 | if (ret == 0) { | |
368 | MSG("%s event %s created in channel %s", | |
369 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
370 | } | |
371 | ||
f3ed775e DG |
372 | /* Next event */ |
373 | event_name = strtok(NULL, ","); | |
374 | } | |
375 | ||
8c9ae521 | 376 | end: |
f3ed775e | 377 | error: |
b73d0b29 MD |
378 | if (opt_channel_name == NULL) { |
379 | free(channel_name); | |
380 | } | |
cd80958d DG |
381 | lttng_destroy_handle(handle); |
382 | ||
f3ed775e DG |
383 | return ret; |
384 | } | |
385 | ||
386 | /* | |
6181537c | 387 | * Add event to trace session |
f3ed775e DG |
388 | */ |
389 | int cmd_enable_events(int argc, const char **argv) | |
390 | { | |
391 | int opt, ret; | |
392 | static poptContext pc; | |
cd80958d | 393 | char *session_name = NULL; |
f3ed775e DG |
394 | |
395 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
396 | poptReadDefaultConfig(pc, 0); | |
397 | ||
398 | /* Default event type */ | |
7a3d1328 | 399 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
400 | |
401 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
402 | switch (opt) { | |
403 | case OPT_HELP: | |
404 | usage(stderr); | |
405 | ret = CMD_SUCCESS; | |
406 | goto end; | |
f3ed775e | 407 | case OPT_TRACEPOINT: |
e6ddca71 | 408 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 409 | break; |
cf0e5467 | 410 | case OPT_PROBE: |
7d29a247 | 411 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
412 | break; |
413 | case OPT_FUNCTION: | |
414 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
415 | break; |
416 | case OPT_FUNCTION_ENTRY: | |
417 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 418 | break; |
a54bd42d MD |
419 | case OPT_SYSCALL: |
420 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 421 | break; |
eeac7d46 MD |
422 | case OPT_USERSPACE: |
423 | opt_userspace = 1; | |
eeac7d46 | 424 | break; |
13dce3b7 MD |
425 | case OPT_TRACEPOINT_LOGLEVEL: |
426 | opt_event_type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; | |
427 | break; | |
f3ed775e DG |
428 | default: |
429 | usage(stderr); | |
430 | ret = CMD_UNDEFINED; | |
431 | goto end; | |
432 | } | |
433 | } | |
434 | ||
435 | opt_event_list = (char*) poptGetArg(pc); | |
436 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
437 | ERR("Missing event name(s).\n"); | |
438 | usage(stderr); | |
439 | ret = CMD_SUCCESS; | |
440 | goto end; | |
441 | } | |
442 | ||
cd80958d DG |
443 | if (!opt_session_name) { |
444 | session_name = get_session_name(); | |
445 | if (session_name == NULL) { | |
446 | ret = -1; | |
447 | goto end; | |
448 | } | |
449 | } else { | |
450 | session_name = opt_session_name; | |
451 | } | |
452 | ||
453 | ret = enable_events(session_name); | |
f3ed775e DG |
454 | |
455 | end: | |
cd80958d DG |
456 | if (opt_session_name == NULL) { |
457 | free(session_name); | |
458 | } | |
459 | ||
f3ed775e DG |
460 | return ret; |
461 | } |