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
];
272 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
273 * added at the end of the loop so a the upper bound we avoid the overflow.
275 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
276 str
[i
] = toupper(inputstr
[i
]);
280 if (!strcmp(str
, "TRACE_EMERG") || !strcmp(str
, "EMERG")) {
281 return LTTNG_LOGLEVEL_EMERG
;
282 } else if (!strcmp(str
, "TRACE_ALERT") || !strcmp(str
, "ALERT")) {
283 return LTTNG_LOGLEVEL_ALERT
;
284 } else if (!strcmp(str
, "TRACE_CRIT") || !strcmp(str
, "CRIT")) {
285 return LTTNG_LOGLEVEL_CRIT
;
286 } else if (!strcmp(str
, "TRACE_ERR") || !strcmp(str
, "ERR")) {
287 return LTTNG_LOGLEVEL_ERR
;
288 } else if (!strcmp(str
, "TRACE_WARNING") || !strcmp(str
, "WARNING")) {
289 return LTTNG_LOGLEVEL_WARNING
;
290 } else if (!strcmp(str
, "TRACE_NOTICE") || !strcmp(str
, "NOTICE")) {
291 return LTTNG_LOGLEVEL_NOTICE
;
292 } else if (!strcmp(str
, "TRACE_INFO") || !strcmp(str
, "INFO")) {
293 return LTTNG_LOGLEVEL_INFO
;
294 } else if (!strcmp(str
, "TRACE_DEBUG_SYSTEM") || !strcmp(str
, "DEBUG_SYSTEM") || !strcmp(str
, "SYSTEM")) {
295 return LTTNG_LOGLEVEL_DEBUG_SYSTEM
;
296 } else if (!strcmp(str
, "TRACE_DEBUG_PROGRAM") || !strcmp(str
, "DEBUG_PROGRAM") || !strcmp(str
, "PROGRAM")) {
297 return LTTNG_LOGLEVEL_DEBUG_PROGRAM
;
298 } else if (!strcmp(str
, "TRACE_DEBUG_PROCESS") || !strcmp(str
, "DEBUG_PROCESS") || !strcmp(str
, "PROCESS")) {
299 return LTTNG_LOGLEVEL_DEBUG_PROCESS
;
300 } else if (!strcmp(str
, "TRACE_DEBUG_MODULE") || !strcmp(str
, "DEBUG_MODULE") || !strcmp(str
, "MODULE")) {
301 return LTTNG_LOGLEVEL_DEBUG_MODULE
;
302 } else if (!strcmp(str
, "TRACE_DEBUG_UNIT") || !strcmp(str
, "DEBUG_UNIT") || !strcmp(str
, "UNIT")) {
303 return LTTNG_LOGLEVEL_DEBUG_UNIT
;
304 } else if (!strcmp(str
, "TRACE_DEBUG_FUNCTION") || !strcmp(str
, "DEBUG_FUNCTION") || !strcmp(str
, "FUNCTION")) {
305 return LTTNG_LOGLEVEL_DEBUG_FUNCTION
;
306 } else if (!strcmp(str
, "TRACE_DEBUG_LINE") || !strcmp(str
, "DEBUG_LINE") || !strcmp(str
, "LINE")) {
307 return LTTNG_LOGLEVEL_DEBUG_LINE
;
308 } else if (!strcmp(str
, "TRACE_DEBUG") || !strcmp(str
, "DEBUG")) {
309 return LTTNG_LOGLEVEL_DEBUG
;
316 * Enabling event using the lttng API.
318 static int enable_events(char *session_name
)
320 int err
, ret
= CMD_SUCCESS
, warn
= 0;
321 char *event_name
, *channel_name
= NULL
;
322 struct lttng_event ev
;
323 struct lttng_domain dom
;
325 memset(&ev
, 0, sizeof(ev
));
326 memset(&dom
, 0, sizeof(dom
));
330 ERR("Filter not implement for kernel tracing yet");
336 /* Create lttng domain */
338 dom
.type
= LTTNG_DOMAIN_KERNEL
;
339 dom
.buf_type
= LTTNG_BUFFER_GLOBAL
;
340 } else if (opt_userspace
) {
341 dom
.type
= LTTNG_DOMAIN_UST
;
343 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
345 ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
350 if (opt_channel_name
== NULL
) {
351 err
= asprintf(&channel_name
, DEFAULT_CHANNEL_NAME
);
357 channel_name
= opt_channel_name
;
360 handle
= lttng_create_handle(session_name
, &dom
);
361 if (handle
== NULL
) {
366 if (opt_enable_all
) {
367 /* Default setup for enable all */
369 ev
.type
= opt_event_type
;
371 /* kernel loglevels not implemented */
372 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
374 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
375 strcpy(ev
.name
, "*");
376 ev
.loglevel_type
= opt_loglevel_type
;
378 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
379 if (ev
.loglevel
== -1) {
380 ERR("Unknown loglevel %s", opt_loglevel
);
381 ret
= -LTTNG_ERR_INVALID
;
390 ret
= lttng_enable_event(handle
, &ev
, channel_name
);
393 case LTTNG_ERR_KERN_EVENT_EXIST
:
394 WARN("Kernel events already enabled (channel %s, session %s)",
395 channel_name
, session_name
);
398 ERR("Events: %s (channel %s, session %s)",
399 lttng_strerror(ret
), channel_name
, session_name
);
405 switch (opt_event_type
) {
406 case LTTNG_EVENT_TRACEPOINT
:
408 MSG("All %s tracepoints are enabled in channel %s for loglevel %s",
409 opt_kernel
? "kernel" : "UST", channel_name
,
412 MSG("All %s tracepoints are enabled in channel %s",
413 opt_kernel
? "kernel" : "UST", channel_name
);
417 case LTTNG_EVENT_SYSCALL
:
419 MSG("All kernel system calls are enabled in channel %s",
423 case LTTNG_EVENT_ALL
:
425 MSG("All %s events are enabled in channel %s for loglevel %s",
426 opt_kernel
? "kernel" : "UST", channel_name
,
429 MSG("All %s events are enabled in channel %s",
430 opt_kernel
? "kernel" : "UST", channel_name
);
435 * We should not be here since lttng_enable_event should have
436 * failed on the event type.
442 ret
= lttng_enable_event_with_filter(handle
, &ev
, channel_name
,
446 case LTTNG_ERR_FILTER_EXIST
:
447 WARN("Filter on events is already enabled"
448 " (channel %s, session %s)",
449 channel_name
, session_name
);
451 case LTTNG_ERR_FILTER_INVAL
:
452 case LTTNG_ERR_FILTER_NOMEM
:
454 ERR("%s", lttng_strerror(ret
));
459 MSG("Filter '%s' successfully set", opt_filter
);
465 /* Strip event list */
466 event_name
= strtok(opt_event_list
, ",");
467 while (event_name
!= NULL
) {
468 /* Copy name and type of the event */
469 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
470 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
471 ev
.type
= opt_event_type
;
473 /* Kernel tracer action */
475 DBG("Enabling kernel event %s for channel %s",
476 event_name
, channel_name
);
478 switch (opt_event_type
) {
479 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
480 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
482 case LTTNG_EVENT_TRACEPOINT
:
484 case LTTNG_EVENT_PROBE
:
485 ret
= parse_probe_opts(&ev
, opt_probe
);
487 ERR("Unable to parse probe options");
492 case LTTNG_EVENT_FUNCTION
:
493 ret
= parse_probe_opts(&ev
, opt_function
);
495 ERR("Unable to parse function probe options");
500 case LTTNG_EVENT_FUNCTION_ENTRY
:
501 strncpy(ev
.attr
.ftrace
.symbol_name
, opt_function_entry_symbol
,
502 LTTNG_SYMBOL_NAME_LEN
);
503 ev
.attr
.ftrace
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
505 case LTTNG_EVENT_SYSCALL
:
506 MSG("per-syscall selection not supported yet. Use \"-a\" "
507 "for all syscalls.");
514 MSG("Kernel loglevels are not supported.");
515 ret
= CMD_UNSUPPORTED
;
519 /* kernel loglevels not implemented */
520 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
521 } else if (opt_userspace
) { /* User-space tracer action */
523 if (opt_cmd_name
!= NULL
|| opt_pid
) {
524 MSG("Only supporting tracing all UST processes (-u) for now.");
530 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name
,
531 channel_name
, opt_loglevel
? : "<all>");
533 switch (opt_event_type
) {
534 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
536 case LTTNG_EVENT_TRACEPOINT
:
537 /* Copy name and type of the event */
538 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
539 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
540 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
542 case LTTNG_EVENT_PROBE
:
543 case LTTNG_EVENT_FUNCTION
:
544 case LTTNG_EVENT_FUNCTION_ENTRY
:
545 case LTTNG_EVENT_SYSCALL
:
547 ERR("Event type not available for user-space tracing");
548 ret
= CMD_UNSUPPORTED
;
552 ev
.loglevel_type
= opt_loglevel_type
;
554 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
555 if (ev
.loglevel
== -1) {
556 ERR("Unknown loglevel %s", opt_loglevel
);
557 ret
= -LTTNG_ERR_INVALID
;
564 ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
570 ret
= lttng_enable_event(handle
, &ev
, channel_name
);
572 /* Turn ret to positive value to handle the positive error code */
574 case LTTNG_ERR_KERN_EVENT_EXIST
:
575 WARN("Kernel event %s already enabled (channel %s, session %s)",
576 event_name
, channel_name
, session_name
);
579 ERR("Event %s: %s (channel %s, session %s)", event_name
,
580 lttng_strerror(ret
), channel_name
, session_name
);
585 MSG("%s event %s created in channel %s",
586 opt_kernel
? "kernel": "UST", event_name
, channel_name
);
591 ret
= lttng_enable_event_with_filter(handle
, &ev
, channel_name
,
595 case LTTNG_ERR_FILTER_EXIST
:
596 WARN("Filter on event %s is already enabled"
597 " (channel %s, session %s)",
598 event_name
, channel_name
, session_name
);
600 case LTTNG_ERR_FILTER_INVAL
:
601 case LTTNG_ERR_FILTER_NOMEM
:
602 ERR("%s", lttng_strerror(ret
));
604 ERR("Setting filter for event %s: '%s'", ev
.name
,
610 MSG("Filter '%s' successfully set", opt_filter
);
615 event_name
= strtok(NULL
, ",");
623 if (opt_channel_name
== NULL
) {
626 lttng_destroy_handle(handle
);
632 * Add event to trace session
634 int cmd_enable_events(int argc
, const char **argv
)
636 int opt
, ret
= CMD_SUCCESS
;
637 static poptContext pc
;
638 char *session_name
= NULL
;
641 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
642 poptReadDefaultConfig(pc
, 0);
644 /* Default event type */
645 opt_event_type
= LTTNG_EVENT_ALL
;
647 while ((opt
= poptGetNextOpt(pc
)) != -1) {
653 opt_event_type
= LTTNG_EVENT_TRACEPOINT
;
656 opt_event_type
= LTTNG_EVENT_PROBE
;
659 opt_event_type
= LTTNG_EVENT_FUNCTION
;
661 case OPT_FUNCTION_ENTRY
:
662 opt_event_type
= LTTNG_EVENT_FUNCTION_ENTRY
;
665 opt_event_type
= LTTNG_EVENT_SYSCALL
;
671 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_RANGE
;
672 opt_loglevel
= poptGetOptArg(pc
);
674 case OPT_LOGLEVEL_ONLY
:
675 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_SINGLE
;
676 opt_loglevel
= poptGetOptArg(pc
);
678 case OPT_LIST_OPTIONS
:
679 list_cmd_options(stdout
, long_options
);
689 /* Validate event type. Multiple event type are not supported. */
690 if (event_type
== -1) {
691 event_type
= opt_event_type
;
693 if (event_type
!= opt_event_type
) {
694 ERR("Multiple event type not supported.");
701 opt_event_list
= (char*) poptGetArg(pc
);
702 if (opt_event_list
== NULL
&& opt_enable_all
== 0) {
703 ERR("Missing event name(s).\n");
709 if (!opt_session_name
) {
710 session_name
= get_session_name();
711 if (session_name
== NULL
) {
716 session_name
= opt_session_name
;
719 ret
= enable_events(session_name
);
722 if (opt_session_name
== NULL
) {