2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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.
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.
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.
24 #include <sys/types.h>
29 #include "../command.h"
30 #include <src/common/sessiond-comm/sessiond-comm.h>
32 static char *opt_event_list
;
33 static int opt_event_type
;
34 static const char *opt_loglevel
;
35 static int opt_loglevel_type
;
36 static int opt_kernel
;
37 static char *opt_session_name
;
38 static int opt_userspace
;
39 static int opt_enable_all
;
40 static char *opt_probe
;
41 static char *opt_function
;
42 static char *opt_function_entry_symbol
;
43 static char *opt_channel_name
;
44 static char *opt_filter
;
46 /* Not implemented yet */
47 static char *opt_cmd_name
;
65 static struct lttng_handle
*handle
;
67 static struct poptOption long_options
[] = {
68 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
69 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
70 {"session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
71 {"all", 'a', POPT_ARG_VAL
, &opt_enable_all
, 1, 0, 0},
72 {"channel", 'c', POPT_ARG_STRING
, &opt_channel_name
, 0, 0, 0},
73 {"kernel", 'k', POPT_ARG_VAL
, &opt_kernel
, 1, 0, 0},
74 {"userspace", 'u', POPT_ARG_NONE
, 0, OPT_USERSPACE
, 0, 0},
75 {"tracepoint", 0, POPT_ARG_NONE
, 0, OPT_TRACEPOINT
, 0, 0},
76 {"probe", 0, POPT_ARG_STRING
, &opt_probe
, OPT_PROBE
, 0, 0},
77 {"function", 0, POPT_ARG_STRING
, &opt_function
, OPT_FUNCTION
, 0, 0},
80 * Currently removed from lttng kernel tracer. Removed from
81 * lttng UI to discourage its use.
83 {"function:entry", 0, POPT_ARG_STRING
, &opt_function_entry_symbol
, OPT_FUNCTION_ENTRY
, 0, 0},
85 {"syscall", 0, POPT_ARG_NONE
, 0, OPT_SYSCALL
, 0, 0},
86 {"loglevel", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL
, 0, 0},
87 {"loglevel-only", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL_ONLY
, 0, 0},
88 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
89 {"filter", 'f', POPT_ARG_STRING
, &opt_filter
, OPT_FILTER
, 0, 0},
96 static void usage(FILE *ofp
)
98 fprintf(ofp
, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n");
100 fprintf(ofp
, "Options:\n");
101 fprintf(ofp
, " -h, --help Show this help\n");
102 fprintf(ofp
, " --list-options Simple listing of options\n");
103 fprintf(ofp
, " -s, --session NAME Apply to session name\n");
104 fprintf(ofp
, " -c, --channel NAME Apply to this channel\n");
105 fprintf(ofp
, " -a, --all Enable all tracepoints and syscalls\n");
106 fprintf(ofp
, " -k, --kernel Apply for the kernel tracer\n");
107 fprintf(ofp
, " -u, --userspace Apply to the user-space tracer\n");
109 fprintf(ofp
, "Event options:\n");
110 fprintf(ofp
, " --tracepoint Tracepoint event (default)\n");
111 fprintf(ofp
, " - userspace tracer supports wildcards at end of string.\n");
112 fprintf(ofp
, " Don't forget to quote to deal with bash expansion.\n");
113 fprintf(ofp
, " e.g.:\n");
114 fprintf(ofp
, " \"*\"\n");
115 fprintf(ofp
, " \"app_component:na*\"\n");
116 fprintf(ofp
, " --probe [addr | symbol | symbol+offset]\n");
117 fprintf(ofp
, " Dynamic probe.\n");
118 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
119 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
120 fprintf(ofp
, " --function [addr | symbol | symbol+offset]\n");
121 fprintf(ofp
, " Dynamic function entry/return probe.\n");
122 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
123 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
125 fprintf(ofp
, " --function:entry symbol\n");
126 fprintf(ofp
, " Function tracer event\n");
128 fprintf(ofp
, " --syscall System call event\n");
130 fprintf(ofp
, " --loglevel name\n");
131 fprintf(ofp
, " Tracepoint loglevel range from 0 to loglevel\n");
132 fprintf(ofp
, " --loglevel-only name\n");
133 fprintf(ofp
, " Tracepoint loglevel (only this loglevel)\n");
135 fprintf(ofp
, " The loglevel or loglevel-only options should be\n");
136 fprintf(ofp
, " combined with a tracepoint name or tracepoint\n");
137 fprintf(ofp
, " wildcard.\n");
138 fprintf(ofp
, " Available loglevels:\n");
139 fprintf(ofp
, " (higher value is more verbose)\n");
140 fprintf(ofp
, " TRACE_EMERG = 0\n");
141 fprintf(ofp
, " TRACE_ALERT = 1\n");
142 fprintf(ofp
, " TRACE_CRIT = 2\n");
143 fprintf(ofp
, " TRACE_ERR = 3\n");
144 fprintf(ofp
, " TRACE_WARNING = 4\n");
145 fprintf(ofp
, " TRACE_NOTICE = 5\n");
146 fprintf(ofp
, " TRACE_INFO = 6\n");
147 fprintf(ofp
, " TRACE_DEBUG_SYSTEM = 7\n");
148 fprintf(ofp
, " TRACE_DEBUG_PROGRAM = 8\n");
149 fprintf(ofp
, " TRACE_DEBUG_PROCESS = 9\n");
150 fprintf(ofp
, " TRACE_DEBUG_MODULE = 10\n");
151 fprintf(ofp
, " TRACE_DEBUG_UNIT = 11\n");
152 fprintf(ofp
, " TRACE_DEBUG_FUNCTION = 12\n");
153 fprintf(ofp
, " TRACE_DEBUG_LINE = 13\n");
154 fprintf(ofp
, " TRACE_DEBUG = 14\n");
155 fprintf(ofp
, " (shortcuts such as \"system\" are allowed)\n");
156 fprintf(ofp
, " --filter \'expression\'\n");
157 fprintf(ofp
, " Filter expression on event fields and context.\n");
158 fprintf(ofp
, " Event recording depends on evaluation.\n");
159 fprintf(ofp
, " Only specify on first activation of\n");
160 fprintf(ofp
, " a given event within a session.\n");
161 fprintf(ofp
, " Filter only allowed when enabling\n");
162 fprintf(ofp
, " events within a session before tracing\n");
163 fprintf(ofp
, " is started. If the filter fails to link\n");
164 fprintf(ofp
, " with the event within the traced domain,\n");
165 fprintf(ofp
, " the event will be discarded. Currently,\n");
166 fprintf(ofp
, " filter is only implemented for the user-space\n");
167 fprintf(ofp
, " tracer.\n");
168 fprintf(ofp
, " Expression examples:.\n");
170 fprintf(ofp
, " 'intfield > 500 && intfield < 503'\n");
171 fprintf(ofp
, " '(stringfield == \"test\" || intfield != 10) && intfield > 33'\n");
172 fprintf(ofp
, " 'doublefield > 1.1 && intfield < 5.3'\n");
174 fprintf(ofp
, " Wildcards are allowed at the end of strings:\n");
175 fprintf(ofp
, " 'seqfield1 == \"te*\"'\n");
176 fprintf(ofp
, " In string literals, the escape character is '\\'.\n");
177 fprintf(ofp
, " Use '\\*' for the '*' character, and '\\\\' for\n");
178 fprintf(ofp
, " the '\\' character. Wildcard match any sequence of,\n");
179 fprintf(ofp
, " characters including an empty sub-string (match 0 or\n");
180 fprintf(ofp
, " more characters).\n");
182 fprintf(ofp
, " Context information can be used for filtering. The\n");
183 fprintf(ofp
, " examples below show usage of context filtering on\n");
184 fprintf(ofp
, " process name (with a wildcard), process ID range, and\n");
185 fprintf(ofp
, " unique thread ID for filtering. The process and\n");
186 fprintf(ofp
, " thread ID of running applications can be found under\n");
187 fprintf(ofp
, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n");
189 fprintf(ofp
, " '$ctx.procname == \"demo*\"'\n");
190 fprintf(ofp
, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n");
191 fprintf(ofp
, " '$ctx.vtid == 1234'\n");
196 * Parse probe options.
198 static int parse_probe_opts(struct lttng_event
*ev
, char *opt
)
202 char name
[LTTNG_SYMBOL_NAME_LEN
];
209 /* Check for symbol+offset */
210 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
212 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
213 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
214 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
215 if (*s_hex
== '\0') {
216 ERR("Invalid probe offset %s", s_hex
);
220 ev
->attr
.probe
.offset
= strtoul(s_hex
, NULL
, 0);
221 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
222 ev
->attr
.probe
.addr
= 0;
226 /* Check for symbol */
227 if (isalpha(name
[0])) {
228 ret
= sscanf(opt
, "%s", name
);
230 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
231 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
232 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
233 ev
->attr
.probe
.offset
= 0;
234 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
235 ev
->attr
.probe
.addr
= 0;
240 /* Check for address */
241 ret
= sscanf(opt
, "%s", s_hex
);
243 if (*s_hex
== '\0') {
244 ERR("Invalid probe address %s", s_hex
);
248 ev
->attr
.probe
.addr
= strtoul(s_hex
, NULL
, 0);
249 DBG("probe addr %" PRIu64
, ev
->attr
.probe
.addr
);
250 ev
->attr
.probe
.offset
= 0;
251 memset(ev
->attr
.probe
.symbol_name
, 0, LTTNG_SYMBOL_NAME_LEN
);
263 * Maps loglevel from string to value
266 int loglevel_str_to_value(const char *inputstr
)
269 char str
[LTTNG_SYMBOL_NAME_LEN
];
271 while (i
< LTTNG_SYMBOL_NAME_LEN
&& inputstr
[i
] != '\0') {
272 str
[i
] = toupper(inputstr
[i
]);
276 if (!strcmp(str
, "TRACE_EMERG") || !strcmp(str
, "EMERG")) {
277 return LTTNG_LOGLEVEL_EMERG
;
278 } else if (!strcmp(str
, "TRACE_ALERT") || !strcmp(str
, "ALERT")) {
279 return LTTNG_LOGLEVEL_ALERT
;
280 } else if (!strcmp(str
, "TRACE_CRIT") || !strcmp(str
, "CRIT")) {
281 return LTTNG_LOGLEVEL_CRIT
;
282 } else if (!strcmp(str
, "TRACE_ERR") || !strcmp(str
, "ERR")) {
283 return LTTNG_LOGLEVEL_ERR
;
284 } else if (!strcmp(str
, "TRACE_WARNING") || !strcmp(str
, "WARNING")) {
285 return LTTNG_LOGLEVEL_WARNING
;
286 } else if (!strcmp(str
, "TRACE_NOTICE") || !strcmp(str
, "NOTICE")) {
287 return LTTNG_LOGLEVEL_NOTICE
;
288 } else if (!strcmp(str
, "TRACE_INFO") || !strcmp(str
, "INFO")) {
289 return LTTNG_LOGLEVEL_INFO
;
290 } else if (!strcmp(str
, "TRACE_DEBUG_SYSTEM") || !strcmp(str
, "DEBUG_SYSTEM") || !strcmp(str
, "SYSTEM")) {
291 return LTTNG_LOGLEVEL_DEBUG_SYSTEM
;
292 } else if (!strcmp(str
, "TRACE_DEBUG_PROGRAM") || !strcmp(str
, "DEBUG_PROGRAM") || !strcmp(str
, "PROGRAM")) {
293 return LTTNG_LOGLEVEL_DEBUG_PROGRAM
;
294 } else if (!strcmp(str
, "TRACE_DEBUG_PROCESS") || !strcmp(str
, "DEBUG_PROCESS") || !strcmp(str
, "PROCESS")) {
295 return LTTNG_LOGLEVEL_DEBUG_PROCESS
;
296 } else if (!strcmp(str
, "TRACE_DEBUG_MODULE") || !strcmp(str
, "DEBUG_MODULE") || !strcmp(str
, "MODULE")) {
297 return LTTNG_LOGLEVEL_DEBUG_MODULE
;
298 } else if (!strcmp(str
, "TRACE_DEBUG_UNIT") || !strcmp(str
, "DEBUG_UNIT") || !strcmp(str
, "UNIT")) {
299 return LTTNG_LOGLEVEL_DEBUG_UNIT
;
300 } else if (!strcmp(str
, "TRACE_DEBUG_FUNCTION") || !strcmp(str
, "DEBUG_FUNCTION") || !strcmp(str
, "FUNCTION")) {
301 return LTTNG_LOGLEVEL_DEBUG_FUNCTION
;
302 } else if (!strcmp(str
, "TRACE_DEBUG_LINE") || !strcmp(str
, "DEBUG_LINE") || !strcmp(str
, "LINE")) {
303 return LTTNG_LOGLEVEL_DEBUG_LINE
;
304 } else if (!strcmp(str
, "TRACE_DEBUG") || !strcmp(str
, "DEBUG")) {
305 return LTTNG_LOGLEVEL_DEBUG
;
312 * Enabling event using the lttng API.
314 static int enable_events(char *session_name
)
316 int err
, ret
= CMD_SUCCESS
, warn
= 0;
317 char *event_name
, *channel_name
= NULL
;
318 struct lttng_event ev
;
319 struct lttng_domain dom
;
321 memset(&ev
, 0, sizeof(ev
));
322 memset(&dom
, 0, sizeof(dom
));
326 ERR("Filter not implement for kernel tracing yet");
332 /* Create lttng domain */
334 dom
.type
= LTTNG_DOMAIN_KERNEL
;
335 dom
.buf_type
= LTTNG_BUFFER_GLOBAL
;
336 } else if (opt_userspace
) {
337 dom
.type
= LTTNG_DOMAIN_UST
;
339 dom
.buf_type
= LTTNG_BUFFER_PER_PID
;
341 ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
346 if (opt_channel_name
== NULL
) {
347 err
= asprintf(&channel_name
, DEFAULT_CHANNEL_NAME
);
353 channel_name
= opt_channel_name
;
356 handle
= lttng_create_handle(session_name
, &dom
);
357 if (handle
== NULL
) {
362 if (opt_enable_all
) {
363 /* Default setup for enable all */
365 ev
.type
= opt_event_type
;
367 /* kernel loglevels not implemented */
368 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
370 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
371 strcpy(ev
.name
, "*");
372 ev
.loglevel_type
= opt_loglevel_type
;
374 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
375 if (ev
.loglevel
== -1) {
376 ERR("Unknown loglevel %s", opt_loglevel
);
377 ret
= -LTTNG_ERR_INVALID
;
386 ret
= lttng_enable_event(handle
, &ev
, channel_name
);
389 case LTTNG_ERR_KERN_EVENT_EXIST
:
390 WARN("Kernel events already enabled (channel %s, session %s)",
391 channel_name
, session_name
);
394 ERR("Events: %s (channel %s, session %s)",
395 lttng_strerror(ret
), channel_name
, session_name
);
401 switch (opt_event_type
) {
402 case LTTNG_EVENT_TRACEPOINT
:
404 MSG("All %s tracepoints are enabled in channel %s for loglevel %s",
405 opt_kernel
? "kernel" : "UST", channel_name
,
408 MSG("All %s tracepoints are enabled in channel %s",
409 opt_kernel
? "kernel" : "UST", channel_name
);
413 case LTTNG_EVENT_SYSCALL
:
415 MSG("All kernel system calls are enabled in channel %s",
419 case LTTNG_EVENT_ALL
:
421 MSG("All %s events are enabled in channel %s for loglevel %s",
422 opt_kernel
? "kernel" : "UST", channel_name
,
425 MSG("All %s events are enabled in channel %s",
426 opt_kernel
? "kernel" : "UST", channel_name
);
431 * We should not be here since lttng_enable_event should have
432 * failed on the event type.
438 ret
= lttng_enable_event_with_filter(handle
, &ev
, channel_name
,
442 case LTTNG_ERR_FILTER_EXIST
:
443 WARN("Filter on events is already enabled"
444 " (channel %s, session %s)",
445 channel_name
, session_name
);
447 case LTTNG_ERR_FILTER_INVAL
:
448 case LTTNG_ERR_FILTER_NOMEM
:
450 ERR("%s", lttng_strerror(ret
));
455 MSG("Filter '%s' successfully set", opt_filter
);
461 /* Strip event list */
462 event_name
= strtok(opt_event_list
, ",");
463 while (event_name
!= NULL
) {
464 /* Copy name and type of the event */
465 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
466 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
467 ev
.type
= opt_event_type
;
469 /* Kernel tracer action */
471 DBG("Enabling kernel event %s for channel %s",
472 event_name
, channel_name
);
474 switch (opt_event_type
) {
475 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
476 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
478 case LTTNG_EVENT_TRACEPOINT
:
480 case LTTNG_EVENT_PROBE
:
481 ret
= parse_probe_opts(&ev
, opt_probe
);
483 ERR("Unable to parse probe options");
488 case LTTNG_EVENT_FUNCTION
:
489 ret
= parse_probe_opts(&ev
, opt_function
);
491 ERR("Unable to parse function probe options");
496 case LTTNG_EVENT_FUNCTION_ENTRY
:
497 strncpy(ev
.attr
.ftrace
.symbol_name
, opt_function_entry_symbol
,
498 LTTNG_SYMBOL_NAME_LEN
);
499 ev
.attr
.ftrace
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
501 case LTTNG_EVENT_SYSCALL
:
502 MSG("per-syscall selection not supported yet. Use \"-a\" "
503 "for all syscalls.");
510 MSG("Kernel loglevels are not supported.");
511 ret
= CMD_UNSUPPORTED
;
515 /* kernel loglevels not implemented */
516 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
517 } else if (opt_userspace
) { /* User-space tracer action */
519 if (opt_cmd_name
!= NULL
|| opt_pid
) {
520 MSG("Only supporting tracing all UST processes (-u) for now.");
526 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name
,
527 channel_name
, opt_loglevel
? : "<all>");
529 switch (opt_event_type
) {
530 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
532 case LTTNG_EVENT_TRACEPOINT
:
533 /* Copy name and type of the event */
534 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
535 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
536 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
538 case LTTNG_EVENT_PROBE
:
539 case LTTNG_EVENT_FUNCTION
:
540 case LTTNG_EVENT_FUNCTION_ENTRY
:
541 case LTTNG_EVENT_SYSCALL
:
543 ERR("Event type not available for user-space tracing");
544 ret
= CMD_UNSUPPORTED
;
548 ev
.loglevel_type
= opt_loglevel_type
;
550 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
551 if (ev
.loglevel
== -1) {
552 ERR("Unknown loglevel %s", opt_loglevel
);
553 ret
= -LTTNG_ERR_INVALID
;
560 ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
566 ret
= lttng_enable_event(handle
, &ev
, channel_name
);
568 /* Turn ret to positive value to handle the positive error code */
570 case LTTNG_ERR_KERN_EVENT_EXIST
:
571 WARN("Kernel event %s already enabled (channel %s, session %s)",
572 event_name
, channel_name
, session_name
);
575 ERR("Event %s: %s (channel %s, session %s)", event_name
,
576 lttng_strerror(ret
), channel_name
, session_name
);
581 MSG("%s event %s created in channel %s",
582 opt_kernel
? "kernel": "UST", event_name
, channel_name
);
587 ret
= lttng_enable_event_with_filter(handle
, &ev
, channel_name
,
591 case LTTNG_ERR_FILTER_EXIST
:
592 WARN("Filter on event %s is already enabled"
593 " (channel %s, session %s)",
594 event_name
, channel_name
, session_name
);
596 case LTTNG_ERR_FILTER_INVAL
:
597 case LTTNG_ERR_FILTER_NOMEM
:
598 ERR("%s", lttng_strerror(ret
));
600 ERR("Setting filter for event %s: '%s'", ev
.name
,
606 MSG("Filter '%s' successfully set", opt_filter
);
611 event_name
= strtok(NULL
, ",");
619 if (opt_channel_name
== NULL
) {
622 lttng_destroy_handle(handle
);
628 * Add event to trace session
630 int cmd_enable_events(int argc
, const char **argv
)
632 int opt
, ret
= CMD_SUCCESS
;
633 static poptContext pc
;
634 char *session_name
= NULL
;
637 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
638 poptReadDefaultConfig(pc
, 0);
640 /* Default event type */
641 opt_event_type
= LTTNG_EVENT_ALL
;
643 while ((opt
= poptGetNextOpt(pc
)) != -1) {
649 opt_event_type
= LTTNG_EVENT_TRACEPOINT
;
652 opt_event_type
= LTTNG_EVENT_PROBE
;
655 opt_event_type
= LTTNG_EVENT_FUNCTION
;
657 case OPT_FUNCTION_ENTRY
:
658 opt_event_type
= LTTNG_EVENT_FUNCTION_ENTRY
;
661 opt_event_type
= LTTNG_EVENT_SYSCALL
;
667 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_RANGE
;
668 opt_loglevel
= poptGetOptArg(pc
);
670 case OPT_LOGLEVEL_ONLY
:
671 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_SINGLE
;
672 opt_loglevel
= poptGetOptArg(pc
);
674 case OPT_LIST_OPTIONS
:
675 list_cmd_options(stdout
, long_options
);
685 /* Validate event type. Multiple event type are not supported. */
686 if (event_type
== -1) {
687 event_type
= opt_event_type
;
689 if (event_type
!= opt_event_type
) {
690 ERR("Multiple event type not supported.");
697 opt_event_list
= (char*) poptGetArg(pc
);
698 if (opt_event_list
== NULL
&& opt_enable_all
== 0) {
699 ERR("Missing event name(s).\n");
705 if (!opt_session_name
) {
706 session_name
= get_session_name();
707 if (session_name
== NULL
) {
712 session_name
= opt_session_name
;
715 ret
= enable_events(session_name
);
718 if (opt_session_name
== NULL
) {