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 | |
6e2d116c DG |
30 | #include "../cmd.h" |
31 | #include "../conf.h" | |
32 | #include "../utils.h" | |
f3ed775e DG |
33 | |
34 | static char *opt_event_list; | |
35 | static int opt_event_type; | |
6181537c | 36 | static int opt_kernel; |
5440dc42 | 37 | static char *opt_session_name; |
f3ed775e | 38 | static int opt_userspace; |
eeac7d46 | 39 | static char *opt_cmd_name; |
f3ed775e DG |
40 | static int opt_enable_all; |
41 | static pid_t opt_pid; | |
cf0e5467 | 42 | static char *opt_probe; |
8f0d098b MD |
43 | static char *opt_function; |
44 | static char *opt_function_entry_symbol; | |
f3ed775e DG |
45 | static char *opt_channel_name; |
46 | ||
47 | enum { | |
48 | OPT_HELP = 1, | |
f3ed775e | 49 | OPT_TRACEPOINT, |
cf0e5467 | 50 | OPT_PROBE, |
f3ed775e | 51 | OPT_FUNCTION, |
8f0d098b | 52 | OPT_FUNCTION_ENTRY, |
a54bd42d | 53 | OPT_SYSCALL, |
eeac7d46 | 54 | OPT_USERSPACE, |
13dce3b7 | 55 | OPT_TRACEPOINT_LOGLEVEL, |
f3ed775e DG |
56 | }; |
57 | ||
cd80958d DG |
58 | static struct lttng_handle *handle; |
59 | ||
f3ed775e DG |
60 | static struct poptOption long_options[] = { |
61 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
62 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 63 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 64 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
65 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
66 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
40e9d5d3 | 67 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e DG |
68 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
69 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, | |
7ebae521 | 70 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 71 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
72 | #if 0 |
73 | /* | |
74 | * Currently removed from lttng kernel tracer. Removed from | |
75 | * lttng UI to discourage its use. | |
76 | */ | |
40e9d5d3 | 77 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 78 | #endif |
7ebae521 | 79 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
13dce3b7 | 80 | {"loglevel", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT_LOGLEVEL, 0, 0}, |
f3ed775e DG |
81 | {0, 0, 0, 0, 0, 0, 0} |
82 | }; | |
83 | ||
84 | /* | |
85 | * usage | |
86 | */ | |
87 | static void usage(FILE *ofp) | |
88 | { | |
89 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); | |
90 | fprintf(ofp, "\n"); | |
91 | fprintf(ofp, " -h, --help Show this help\n"); | |
5440dc42 | 92 | fprintf(ofp, " -s, --session Apply on session name\n"); |
f3ed775e | 93 | fprintf(ofp, " -c, --channel Apply on this channel\n"); |
e14f64a8 | 94 | fprintf(ofp, " -a, --all Enable all tracepoints\n"); |
f3ed775e DG |
95 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
96 | fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n"); | |
e14f64a8 DG |
97 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
98 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
99 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
f3ed775e DG |
100 | fprintf(ofp, "\n"); |
101 | fprintf(ofp, "Event options:\n"); | |
102 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
103 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
104 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
105 | fprintf(ofp, " e.g.:\n"); | |
106 | fprintf(ofp, " \"*\"\n"); | |
107 | fprintf(ofp, " \"app_component:na*\"\n"); | |
13dce3b7 | 108 | fprintf(ofp, " --loglevel Tracepoint loglevel\n"); |
8f0d098b | 109 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
110 | fprintf(ofp, " Dynamic probe.\n"); |
111 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
112 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
113 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
114 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
115 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
116 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 117 | #if 0 |
8f0d098b MD |
118 | fprintf(ofp, " --function:entry symbol\n"); |
119 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 120 | #endif |
a54bd42d | 121 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e DG |
122 | fprintf(ofp, "\n"); |
123 | } | |
124 | ||
0d63dd19 | 125 | /* |
6181537c | 126 | * Parse probe options. |
0d63dd19 | 127 | */ |
cf0e5467 | 128 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
129 | { |
130 | int ret; | |
8ff0bbd0 | 131 | char s_hex[19]; |
0d63dd19 DG |
132 | char name[LTTNG_SYMBOL_NAME_LEN]; |
133 | ||
134 | if (opt == NULL) { | |
135 | ret = -1; | |
8f0d098b | 136 | goto end; |
0d63dd19 DG |
137 | } |
138 | ||
139 | /* Check for symbol+offset */ | |
8ff0bbd0 | 140 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 141 | if (ret == 2) { |
7d29a247 | 142 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 143 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 144 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
145 | if (strlen(s_hex) == 0) { |
146 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 147 | ret = -1; |
8f0d098b | 148 | goto end; |
0d63dd19 | 149 | } |
8ff0bbd0 | 150 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 151 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 152 | ev->attr.probe.addr = 0; |
8f0d098b MD |
153 | goto end; |
154 | } | |
155 | ||
156 | /* Check for symbol */ | |
157 | if (isalpha(name[0])) { | |
158 | ret = sscanf(opt, "%s", name); | |
159 | if (ret == 1) { | |
160 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 161 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
162 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
163 | ev->attr.probe.offset = 0; | |
164 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
165 | ev->attr.probe.addr = 0; | |
166 | goto end; | |
167 | } | |
0d63dd19 DG |
168 | } |
169 | ||
170 | /* Check for address */ | |
8ff0bbd0 | 171 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 172 | if (ret > 0) { |
8ff0bbd0 DG |
173 | if (strlen(s_hex) == 0) { |
174 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 175 | ret = -1; |
8f0d098b | 176 | goto end; |
0d63dd19 | 177 | } |
8ff0bbd0 | 178 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 179 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
180 | ev->attr.probe.offset = 0; |
181 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 182 | goto end; |
0d63dd19 DG |
183 | } |
184 | ||
185 | /* No match */ | |
186 | ret = -1; | |
187 | ||
8f0d098b | 188 | end: |
0d63dd19 DG |
189 | return ret; |
190 | } | |
191 | ||
f3ed775e | 192 | /* |
6181537c | 193 | * Enabling event using the lttng API. |
f3ed775e | 194 | */ |
cd80958d | 195 | static int enable_events(char *session_name) |
f3ed775e DG |
196 | { |
197 | int err, ret = CMD_SUCCESS; | |
b73d0b29 | 198 | char *event_name, *channel_name = NULL; |
f3ed775e | 199 | struct lttng_event ev; |
7d29a247 | 200 | struct lttng_domain dom; |
f3ed775e | 201 | |
f3ed775e DG |
202 | if (opt_channel_name == NULL) { |
203 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
204 | if (err < 0) { | |
205 | ret = CMD_FATAL; | |
206 | goto error; | |
207 | } | |
208 | } else { | |
209 | channel_name = opt_channel_name; | |
210 | } | |
211 | ||
2bdd86d4 | 212 | if (opt_kernel && opt_userspace) { |
e14f64a8 | 213 | ERR("Can't use -k/--kernel and -u/--userspace together"); |
2bdd86d4 MD |
214 | ret = CMD_FATAL; |
215 | goto error; | |
216 | } | |
6181537c | 217 | |
7d29a247 DG |
218 | /* Create lttng domain */ |
219 | if (opt_kernel) { | |
220 | dom.type = LTTNG_DOMAIN_KERNEL; | |
6181537c DG |
221 | } else if (opt_pid != 0) { |
222 | dom.type = LTTNG_DOMAIN_UST_PID; | |
223 | dom.attr.pid = opt_pid; | |
224 | DBG("PID %d set to lttng handle", opt_pid); | |
225 | } else if (opt_userspace && opt_cmd_name == NULL) { | |
2bdd86d4 | 226 | dom.type = LTTNG_DOMAIN_UST; |
6181537c DG |
227 | } else if (opt_userspace && opt_cmd_name != NULL) { |
228 | dom.type = LTTNG_DOMAIN_UST_EXEC_NAME; | |
229 | strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX); | |
230 | } else { | |
e14f64a8 | 231 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
6181537c DG |
232 | ret = CMD_NOT_IMPLEMENTED; |
233 | goto error; | |
2bdd86d4 | 234 | } |
7d29a247 | 235 | |
cd80958d DG |
236 | handle = lttng_create_handle(session_name, &dom); |
237 | if (handle == NULL) { | |
238 | ret = -1; | |
239 | goto error; | |
240 | } | |
1aef21b6 | 241 | |
cd80958d | 242 | if (opt_enable_all) { |
8c9ae521 | 243 | /* Default setup for enable all */ |
75e8c5ab MD |
244 | |
245 | if (opt_kernel) { | |
246 | ev.type = opt_event_type; | |
247 | ev.name[0] = '\0'; | |
248 | } else { | |
249 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
250 | strcpy(ev.name, "*"); | |
251 | } | |
8c9ae521 DG |
252 | |
253 | ret = lttng_enable_event(handle, &ev, channel_name); | |
254 | if (ret < 0) { | |
255 | goto error; | |
256 | } | |
257 | ||
0133c199 MD |
258 | switch (opt_event_type) { |
259 | case LTTNG_EVENT_TRACEPOINT: | |
2bdd86d4 MD |
260 | MSG("All %s tracepoints are enabled in channel %s", |
261 | opt_kernel ? "kernel" : "UST", channel_name); | |
0133c199 | 262 | break; |
a54bd42d | 263 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 264 | if (opt_kernel) { |
8c9ae521 DG |
265 | MSG("All kernel system calls are enabled in channel %s", |
266 | channel_name); | |
c93d9daf | 267 | } |
0133c199 | 268 | break; |
7a3d1328 | 269 | case LTTNG_EVENT_ALL: |
2bdd86d4 MD |
270 | MSG("All %s events are enabled in channel %s", |
271 | opt_kernel ? "kernel" : "UST", channel_name); | |
7a3d1328 | 272 | break; |
0133c199 | 273 | default: |
8c9ae521 | 274 | /* |
6181537c DG |
275 | * We should not be here since lttng_enable_event should have |
276 | * failed on the event type. | |
8c9ae521 | 277 | */ |
f3ed775e DG |
278 | goto error; |
279 | } | |
8c9ae521 | 280 | goto end; |
f3ed775e DG |
281 | } |
282 | ||
283 | /* Strip event list */ | |
284 | event_name = strtok(opt_event_list, ","); | |
285 | while (event_name != NULL) { | |
6181537c DG |
286 | /* Copy name and type of the event */ |
287 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
288 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
289 | ev.type = opt_event_type; | |
290 | ||
f3ed775e DG |
291 | /* Kernel tracer action */ |
292 | if (opt_kernel) { | |
293 | DBG("Enabling kernel event %s for channel %s", | |
294 | event_name, channel_name); | |
f3ed775e DG |
295 | |
296 | switch (opt_event_type) { | |
7a3d1328 MD |
297 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
298 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
299 | /* Fall-through */ | |
e6ddca71 | 300 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 301 | break; |
7d29a247 | 302 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 303 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 304 | if (ret < 0) { |
cf0e5467 | 305 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
306 | ret = 0; |
307 | goto error; | |
308 | } | |
f3ed775e DG |
309 | break; |
310 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
311 | ret = parse_probe_opts(&ev, opt_function); |
312 | if (ret < 0) { | |
313 | ERR("Unable to parse function probe options"); | |
314 | ret = 0; | |
315 | goto error; | |
316 | } | |
317 | break; | |
318 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
319 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
320 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 321 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 322 | break; |
a54bd42d | 323 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
324 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
325 | "for all syscalls."); | |
f3ed775e DG |
326 | default: |
327 | ret = CMD_NOT_IMPLEMENTED; | |
328 | goto error; | |
329 | } | |
f3ed775e | 330 | } else if (opt_userspace) { /* User-space tracer action */ |
e14f64a8 DG |
331 | if (opt_cmd_name != NULL || opt_pid) { |
332 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
2bdd86d4 MD |
333 | ret = CMD_NOT_IMPLEMENTED; |
334 | goto error; | |
335 | } | |
6181537c DG |
336 | |
337 | DBG("Enabling UST event %s for channel %s", event_name, | |
338 | channel_name); | |
2bdd86d4 MD |
339 | |
340 | switch (opt_event_type) { | |
341 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
342 | /* Fall-through */ |
343 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
344 | /* Copy name and type of the event */ |
345 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
346 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
347 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 | 348 | break; |
13dce3b7 | 349 | case LTTNG_EVENT_TRACEPOINT_LOGLEVEL: |
e4baff1e | 350 | /* Copy name and type of the event */ |
13dce3b7 | 351 | ev.type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; |
e4baff1e MD |
352 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); |
353 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
13dce3b7 | 354 | break; |
2bdd86d4 MD |
355 | case LTTNG_EVENT_PROBE: |
356 | case LTTNG_EVENT_FUNCTION: | |
357 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
358 | case LTTNG_EVENT_SYSCALL: | |
359 | default: | |
360 | ret = CMD_NOT_IMPLEMENTED; | |
361 | goto error; | |
362 | } | |
f3ed775e | 363 | } else { |
e14f64a8 | 364 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
f3ed775e DG |
365 | goto error; |
366 | } | |
367 | ||
6181537c DG |
368 | ret = lttng_enable_event(handle, &ev, channel_name); |
369 | if (ret == 0) { | |
370 | MSG("%s event %s created in channel %s", | |
371 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
372 | } | |
373 | ||
f3ed775e DG |
374 | /* Next event */ |
375 | event_name = strtok(NULL, ","); | |
376 | } | |
377 | ||
8c9ae521 | 378 | end: |
f3ed775e | 379 | error: |
b73d0b29 MD |
380 | if (opt_channel_name == NULL) { |
381 | free(channel_name); | |
382 | } | |
cd80958d DG |
383 | lttng_destroy_handle(handle); |
384 | ||
f3ed775e DG |
385 | return ret; |
386 | } | |
387 | ||
388 | /* | |
6181537c | 389 | * Add event to trace session |
f3ed775e DG |
390 | */ |
391 | int cmd_enable_events(int argc, const char **argv) | |
392 | { | |
393 | int opt, ret; | |
394 | static poptContext pc; | |
cd80958d | 395 | char *session_name = NULL; |
f3ed775e DG |
396 | |
397 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
398 | poptReadDefaultConfig(pc, 0); | |
399 | ||
400 | /* Default event type */ | |
7a3d1328 | 401 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
402 | |
403 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
404 | switch (opt) { | |
405 | case OPT_HELP: | |
406 | usage(stderr); | |
407 | ret = CMD_SUCCESS; | |
408 | goto end; | |
f3ed775e | 409 | case OPT_TRACEPOINT: |
e6ddca71 | 410 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 411 | break; |
cf0e5467 | 412 | case OPT_PROBE: |
7d29a247 | 413 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
414 | break; |
415 | case OPT_FUNCTION: | |
416 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
417 | break; |
418 | case OPT_FUNCTION_ENTRY: | |
419 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 420 | break; |
a54bd42d MD |
421 | case OPT_SYSCALL: |
422 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 423 | break; |
eeac7d46 MD |
424 | case OPT_USERSPACE: |
425 | opt_userspace = 1; | |
eeac7d46 | 426 | break; |
13dce3b7 MD |
427 | case OPT_TRACEPOINT_LOGLEVEL: |
428 | opt_event_type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL; | |
429 | break; | |
f3ed775e DG |
430 | default: |
431 | usage(stderr); | |
432 | ret = CMD_UNDEFINED; | |
433 | goto end; | |
434 | } | |
435 | } | |
436 | ||
437 | opt_event_list = (char*) poptGetArg(pc); | |
438 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
439 | ERR("Missing event name(s).\n"); | |
440 | usage(stderr); | |
441 | ret = CMD_SUCCESS; | |
442 | goto end; | |
443 | } | |
444 | ||
cd80958d DG |
445 | if (!opt_session_name) { |
446 | session_name = get_session_name(); | |
447 | if (session_name == NULL) { | |
448 | ret = -1; | |
449 | goto end; | |
450 | } | |
451 | } else { | |
452 | session_name = opt_session_name; | |
453 | } | |
454 | ||
455 | ret = enable_events(session_name); | |
f3ed775e DG |
456 | |
457 | end: | |
cd80958d DG |
458 | if (opt_session_name == NULL) { |
459 | free(session_name); | |
460 | } | |
461 | ||
f3ed775e DG |
462 | return ret; |
463 | } |