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.
25 #include <sys/types.h>
30 #include "../command.h"
31 #include <src/common/sessiond-comm/sessiond-comm.h>
33 static char *opt_event_list
;
34 static int opt_event_type
;
35 static const char *opt_loglevel
;
36 static int opt_loglevel_type
;
37 static int opt_kernel
;
38 static char *opt_session_name
;
39 static int opt_userspace
;
41 static int opt_enable_all
;
42 static char *opt_probe
;
43 static char *opt_function
;
44 static char *opt_function_entry_symbol
;
45 static char *opt_channel_name
;
46 static char *opt_filter
;
47 static char *opt_exclude
;
49 /* Not implemented yet */
50 static char *opt_cmd_name
;
69 static struct lttng_handle
*handle
;
71 static struct poptOption long_options
[] = {
72 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
73 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
74 {"session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
75 {"all", 'a', POPT_ARG_VAL
, &opt_enable_all
, 1, 0, 0},
76 {"channel", 'c', POPT_ARG_STRING
, &opt_channel_name
, 0, 0, 0},
77 {"kernel", 'k', POPT_ARG_VAL
, &opt_kernel
, 1, 0, 0},
78 {"userspace", 'u', POPT_ARG_NONE
, 0, OPT_USERSPACE
, 0, 0},
79 {"jul", 'j', POPT_ARG_VAL
, &opt_jul
, 1, 0, 0},
80 {"tracepoint", 0, POPT_ARG_NONE
, 0, OPT_TRACEPOINT
, 0, 0},
81 {"probe", 0, POPT_ARG_STRING
, &opt_probe
, OPT_PROBE
, 0, 0},
82 {"function", 0, POPT_ARG_STRING
, &opt_function
, OPT_FUNCTION
, 0, 0},
85 * Currently removed from lttng kernel tracer. Removed from
86 * lttng UI to discourage its use.
88 {"function:entry", 0, POPT_ARG_STRING
, &opt_function_entry_symbol
, OPT_FUNCTION_ENTRY
, 0, 0},
90 {"syscall", 0, POPT_ARG_NONE
, 0, OPT_SYSCALL
, 0, 0},
91 {"loglevel", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL
, 0, 0},
92 {"loglevel-only", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL_ONLY
, 0, 0},
93 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
94 {"filter", 'f', POPT_ARG_STRING
, &opt_filter
, OPT_FILTER
, 0, 0},
95 {"exclude", 'x', POPT_ARG_STRING
, &opt_exclude
, OPT_EXCLUDE
, 0, 0},
102 static void usage(FILE *ofp
)
104 fprintf(ofp
, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n");
106 fprintf(ofp
, "Options:\n");
107 fprintf(ofp
, " -h, --help Show this help\n");
108 fprintf(ofp
, " --list-options Simple listing of options\n");
109 fprintf(ofp
, " -s, --session NAME Apply to session name\n");
110 fprintf(ofp
, " -c, --channel NAME Apply to this channel\n");
111 fprintf(ofp
, " -a, --all Enable all tracepoints and syscalls\n");
112 fprintf(ofp
, " -k, --kernel Apply for the kernel tracer\n");
113 fprintf(ofp
, " -u, --userspace Apply to the user-space tracer\n");
114 fprintf(ofp
, " -j, --jul Apply for Java application using JUL\n");
116 fprintf(ofp
, "Event options:\n");
117 fprintf(ofp
, " --tracepoint Tracepoint event (default)\n");
118 fprintf(ofp
, " - userspace tracer supports wildcards at end of string.\n");
119 fprintf(ofp
, " Don't forget to quote to deal with bash expansion.\n");
120 fprintf(ofp
, " e.g.:\n");
121 fprintf(ofp
, " \"*\"\n");
122 fprintf(ofp
, " \"app_component:na*\"\n");
123 fprintf(ofp
, " --probe (addr | symbol | symbol+offset)\n");
124 fprintf(ofp
, " Dynamic probe.\n");
125 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
126 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
127 fprintf(ofp
, " --function (addr | symbol | symbol+offset)\n");
128 fprintf(ofp
, " Dynamic function entry/return probe.\n");
129 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
130 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
132 fprintf(ofp
, " --function:entry symbol\n");
133 fprintf(ofp
, " Function tracer event\n");
135 fprintf(ofp
, " --syscall System call event\n");
137 fprintf(ofp
, " --loglevel name\n");
138 fprintf(ofp
, " Tracepoint loglevel range from 0 to loglevel.\n");
139 fprintf(ofp
, " For JUL domain, see the table below for the range values.\n");
140 fprintf(ofp
, " --loglevel-only name\n");
141 fprintf(ofp
, " Tracepoint loglevel (only this loglevel)\n");
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");
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");
165 fprintf(ofp
, " Available JUL domain loglevels:\n");
166 fprintf(ofp
, " JUL_OFF = INT32_MAX\n");
167 fprintf(ofp
, " JUL_SEVERE = %d\n", LTTNG_LOGLEVEL_JUL_SEVERE
);
168 fprintf(ofp
, " JUL_WARNING = %d\n", LTTNG_LOGLEVEL_JUL_WARNING
);
169 fprintf(ofp
, " JUL_INFO = %d\n", LTTNG_LOGLEVEL_JUL_INFO
);
170 fprintf(ofp
, " JUL_CONFIG = %d\n", LTTNG_LOGLEVEL_JUL_CONFIG
);
171 fprintf(ofp
, " JUL_FINE = %d\n", LTTNG_LOGLEVEL_JUL_FINE
);
172 fprintf(ofp
, " JUL_FINER = %d\n", LTTNG_LOGLEVEL_JUL_FINER
);
173 fprintf(ofp
, " JUL_FINEST = %d\n", LTTNG_LOGLEVEL_JUL_FINEST
);
174 fprintf(ofp
, " JUL_ALL = INT32_MIN\n");
175 fprintf(ofp
, " (shortcuts such as \"severe\" are allowed)\n");
177 fprintf(ofp
, " -f, --filter \'expression\'\n");
178 fprintf(ofp
, " Filter expression on event fields and context.\n");
179 fprintf(ofp
, " Event recording depends on evaluation.\n");
180 fprintf(ofp
, " Only specify on first activation of\n");
181 fprintf(ofp
, " a given event within a session.\n");
182 fprintf(ofp
, " Filter only allowed when enabling\n");
183 fprintf(ofp
, " events within a session before tracing\n");
184 fprintf(ofp
, " is started. If the filter fails to link\n");
185 fprintf(ofp
, " with the event within the traced domain,\n");
186 fprintf(ofp
, " the event will be discarded. Currently,\n");
187 fprintf(ofp
, " filter is only implemented for the user-space\n");
188 fprintf(ofp
, " tracer.\n");
189 fprintf(ofp
, " Expression examples:.\n");
191 fprintf(ofp
, " 'intfield > 500 && intfield < 503'\n");
192 fprintf(ofp
, " '(strfield == \"test\" || intfield != 10) && intfield > 33'\n");
193 fprintf(ofp
, " 'doublefield > 1.1 && intfield < 5.3'\n");
195 fprintf(ofp
, " Wildcards are allowed at the end of strings:\n");
196 fprintf(ofp
, " 'seqfield1 == \"te*\"'\n");
197 fprintf(ofp
, " In string literals, the escape character is '\\'.\n");
198 fprintf(ofp
, " Use '\\*' for the '*' character, and '\\\\' for\n");
199 fprintf(ofp
, " the '\\' character. Wildcard match any sequence of,\n");
200 fprintf(ofp
, " characters including an empty sub-string (match 0 or\n");
201 fprintf(ofp
, " more characters).\n");
203 fprintf(ofp
, " Context information can be used for filtering. The\n");
204 fprintf(ofp
, " examples below show usage of context filtering on\n");
205 fprintf(ofp
, " process name (with a wildcard), process ID range, and\n");
206 fprintf(ofp
, " unique thread ID for filtering. The process and\n");
207 fprintf(ofp
, " thread ID of running applications can be found under\n");
208 fprintf(ofp
, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n");
210 fprintf(ofp
, " '$ctx.procname == \"demo*\"'\n");
211 fprintf(ofp
, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n");
212 fprintf(ofp
, " '$ctx.vtid == 1234'\n");
213 fprintf(ofp
, " -x, --exclude LIST\n");
214 fprintf(ofp
, " Add exclusions to UST tracepoints:\n");
215 fprintf(ofp
, " Events that match any of the items\n");
216 fprintf(ofp
, " in the comma-separated LIST are not\n");
217 fprintf(ofp
, " enabled, even if they match a wildcard\n");
218 fprintf(ofp
, " definition of the event.\n");
223 * Parse probe options.
225 static int parse_probe_opts(struct lttng_event
*ev
, char *opt
)
229 char name
[LTTNG_SYMBOL_NAME_LEN
];
236 /* Check for symbol+offset */
237 ret
= sscanf(opt
, "%[^'+']+%s", name
, s_hex
);
239 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
240 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
241 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
242 if (*s_hex
== '\0') {
243 ERR("Invalid probe offset %s", s_hex
);
247 ev
->attr
.probe
.offset
= strtoul(s_hex
, NULL
, 0);
248 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
249 ev
->attr
.probe
.addr
= 0;
253 /* Check for symbol */
254 if (isalpha(name
[0])) {
255 ret
= sscanf(opt
, "%s", name
);
257 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
258 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
259 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
260 ev
->attr
.probe
.offset
= 0;
261 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
262 ev
->attr
.probe
.addr
= 0;
267 /* Check for address */
268 ret
= sscanf(opt
, "%s", s_hex
);
270 if (*s_hex
== '\0') {
271 ERR("Invalid probe address %s", s_hex
);
275 ev
->attr
.probe
.addr
= strtoul(s_hex
, NULL
, 0);
276 DBG("probe addr %" PRIu64
, ev
->attr
.probe
.addr
);
277 ev
->attr
.probe
.offset
= 0;
278 memset(ev
->attr
.probe
.symbol_name
, 0, LTTNG_SYMBOL_NAME_LEN
);
290 * Maps JUL loglevel from string to value
292 static int loglevel_jul_str_to_value(const char *inputstr
)
295 char str
[LTTNG_SYMBOL_NAME_LEN
];
298 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
299 * added at the end of the loop so a the upper bound we avoid the overflow.
301 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
302 str
[i
] = toupper(inputstr
[i
]);
307 if (!strcmp(str
, "JUL_OFF") || !strcmp(str
, "OFF")) {
308 return LTTNG_LOGLEVEL_JUL_OFF
;
309 } else if (!strcmp(str
, "JUL_SEVERE") || !strcmp(str
, "SEVERE")) {
310 return LTTNG_LOGLEVEL_JUL_SEVERE
;
311 } else if (!strcmp(str
, "JUL_WARNING") || !strcmp(str
, "WARNING")) {
312 return LTTNG_LOGLEVEL_JUL_WARNING
;
313 } else if (!strcmp(str
, "JUL_INFO") || !strcmp(str
, "INFO")) {
314 return LTTNG_LOGLEVEL_JUL_INFO
;
315 } else if (!strcmp(str
, "JUL_CONFIG") || !strcmp(str
, "CONFIG")) {
316 return LTTNG_LOGLEVEL_JUL_CONFIG
;
317 } else if (!strcmp(str
, "JUL_FINE") || !strcmp(str
, "FINE")) {
318 return LTTNG_LOGLEVEL_JUL_FINE
;
319 } else if (!strcmp(str
, "JUL_FINER") || !strcmp(str
, "FINER")) {
320 return LTTNG_LOGLEVEL_JUL_FINER
;
321 } else if (!strcmp(str
, "JUL_FINEST") || !strcmp(str
, "FINEST")) {
322 return LTTNG_LOGLEVEL_JUL_FINEST
;
323 } else if (!strcmp(str
, "JUL_ALL") || !strcmp(str
, "ALL")) {
324 return LTTNG_LOGLEVEL_JUL_ALL
;
331 * Maps loglevel from string to value
334 int loglevel_str_to_value(const char *inputstr
)
337 char str
[LTTNG_SYMBOL_NAME_LEN
];
340 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
341 * added at the end of the loop so a the upper bound we avoid the overflow.
343 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
344 str
[i
] = toupper(inputstr
[i
]);
348 if (!strcmp(str
, "TRACE_EMERG") || !strcmp(str
, "EMERG")) {
349 return LTTNG_LOGLEVEL_EMERG
;
350 } else if (!strcmp(str
, "TRACE_ALERT") || !strcmp(str
, "ALERT")) {
351 return LTTNG_LOGLEVEL_ALERT
;
352 } else if (!strcmp(str
, "TRACE_CRIT") || !strcmp(str
, "CRIT")) {
353 return LTTNG_LOGLEVEL_CRIT
;
354 } else if (!strcmp(str
, "TRACE_ERR") || !strcmp(str
, "ERR")) {
355 return LTTNG_LOGLEVEL_ERR
;
356 } else if (!strcmp(str
, "TRACE_WARNING") || !strcmp(str
, "WARNING")) {
357 return LTTNG_LOGLEVEL_WARNING
;
358 } else if (!strcmp(str
, "TRACE_NOTICE") || !strcmp(str
, "NOTICE")) {
359 return LTTNG_LOGLEVEL_NOTICE
;
360 } else if (!strcmp(str
, "TRACE_INFO") || !strcmp(str
, "INFO")) {
361 return LTTNG_LOGLEVEL_INFO
;
362 } else if (!strcmp(str
, "TRACE_DEBUG_SYSTEM") || !strcmp(str
, "DEBUG_SYSTEM") || !strcmp(str
, "SYSTEM")) {
363 return LTTNG_LOGLEVEL_DEBUG_SYSTEM
;
364 } else if (!strcmp(str
, "TRACE_DEBUG_PROGRAM") || !strcmp(str
, "DEBUG_PROGRAM") || !strcmp(str
, "PROGRAM")) {
365 return LTTNG_LOGLEVEL_DEBUG_PROGRAM
;
366 } else if (!strcmp(str
, "TRACE_DEBUG_PROCESS") || !strcmp(str
, "DEBUG_PROCESS") || !strcmp(str
, "PROCESS")) {
367 return LTTNG_LOGLEVEL_DEBUG_PROCESS
;
368 } else if (!strcmp(str
, "TRACE_DEBUG_MODULE") || !strcmp(str
, "DEBUG_MODULE") || !strcmp(str
, "MODULE")) {
369 return LTTNG_LOGLEVEL_DEBUG_MODULE
;
370 } else if (!strcmp(str
, "TRACE_DEBUG_UNIT") || !strcmp(str
, "DEBUG_UNIT") || !strcmp(str
, "UNIT")) {
371 return LTTNG_LOGLEVEL_DEBUG_UNIT
;
372 } else if (!strcmp(str
, "TRACE_DEBUG_FUNCTION") || !strcmp(str
, "DEBUG_FUNCTION") || !strcmp(str
, "FUNCTION")) {
373 return LTTNG_LOGLEVEL_DEBUG_FUNCTION
;
374 } else if (!strcmp(str
, "TRACE_DEBUG_LINE") || !strcmp(str
, "DEBUG_LINE") || !strcmp(str
, "LINE")) {
375 return LTTNG_LOGLEVEL_DEBUG_LINE
;
376 } else if (!strcmp(str
, "TRACE_DEBUG") || !strcmp(str
, "DEBUG")) {
377 return LTTNG_LOGLEVEL_DEBUG
;
384 const char *print_channel_name(const char *name
)
386 return name
? : DEFAULT_CHANNEL_NAME
;
390 const char *print_raw_channel_name(const char *name
)
392 return name
? : "<default>";
396 * Return allocated string for pretty-printing exclusion names.
399 char *print_exclusions(int count
, char **names
)
403 const char *preamble
= " excluding ";
410 /* calculate total required length */
411 for (i
= 0; i
< count
; i
++) {
412 length
+= strlen(names
[i
]) + 1;
415 /* add length of preamble + one for NUL - one for last (missing) comma */
416 length
+= strlen(preamble
);
417 ret
= malloc(length
);
418 strncpy(ret
, preamble
, length
);
419 for (i
= 0; i
< count
; i
++) {
420 strcat(ret
, names
[i
]);
421 if (i
!= count
- 1) {
429 * Compare list of exclusions against an event name.
430 * Return a list of legal exclusion names.
431 * Produce an error or a warning about others (depending on the situation)
434 int check_exclusion_subsets(const char *event_name
,
435 const char *exclusions
,
436 int *exclusion_count_ptr
,
437 char ***exclusion_list_ptr
)
439 const char *excluder_ptr
;
440 const char *event_ptr
;
441 const char *next_excluder
;
443 int exclusion_count
= 0;
444 char **exclusion_list
= NULL
;
445 int ret
= CMD_SUCCESS
;
447 if (event_name
[strlen(event_name
) - 1] != '*') {
448 ERR("Event %s: Excluders can only be used with wildcarded events", event_name
);
452 next_excluder
= exclusions
;
453 while (*next_excluder
!= 0) {
454 event_ptr
= event_name
;
455 excluder_ptr
= next_excluder
;
456 excluder_length
= strcspn(next_excluder
, ",");
458 /* Scan both the excluder and the event letter by letter */
466 /* Event is a subset of the excluder */
467 ERR("Event %s: %.*s excludes all events from %s",
475 /* Excluder is a proper subset of event */
477 exclusion_list
= realloc(exclusion_list
, sizeof(char **) * exclusion_count
);
478 exclusion_list
[exclusion_count
- 1] = strndup(next_excluder
, excluder_length
);
483 /* Excluder and event sets have no common elements */
484 WARN("Event %s: %.*s does not exclude any events from %s",
495 next_excluder
+= excluder_length
;
496 if (*next_excluder
== ',') {
502 while (exclusion_count
--) {
503 free(exclusion_list
[exclusion_count
]);
505 if (exclusion_list
!= NULL
) {
506 free(exclusion_list
);
508 exclusion_list
= NULL
;
512 *exclusion_count_ptr
= exclusion_count
;
513 *exclusion_list_ptr
= exclusion_list
;
517 * Enabling event using the lttng API.
519 static int enable_events(char *session_name
)
521 int ret
= CMD_SUCCESS
, warn
= 0;
522 char *event_name
, *channel_name
= NULL
;
523 struct lttng_event ev
;
524 struct lttng_domain dom
;
525 int exclusion_count
= 0;
526 char **exclusion_list
= NULL
;
528 memset(&ev
, 0, sizeof(ev
));
529 memset(&dom
, 0, sizeof(dom
));
533 ERR("Filter not implement for kernel tracing yet");
538 WARN("Kernel loglevels are not supported.");
542 /* Create lttng domain */
544 dom
.type
= LTTNG_DOMAIN_KERNEL
;
545 dom
.buf_type
= LTTNG_BUFFER_GLOBAL
;
546 } else if (opt_userspace
) {
547 dom
.type
= LTTNG_DOMAIN_UST
;
549 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
550 } else if (opt_jul
) {
551 dom
.type
= LTTNG_DOMAIN_JUL
;
553 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
555 print_missing_domain();
560 if (opt_kernel
&& opt_exclude
) {
561 ERR("Event name exclusions are not yet implemented for kernel events");
566 channel_name
= opt_channel_name
;
568 handle
= lttng_create_handle(session_name
, &dom
);
569 if (handle
== NULL
) {
574 if (opt_enable_all
) {
575 /* Default setup for enable all */
577 ev
.type
= opt_event_type
;
579 /* kernel loglevels not implemented */
580 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
582 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
583 strcpy(ev
.name
, "*");
584 ev
.loglevel_type
= opt_loglevel_type
;
586 assert(opt_userspace
|| opt_jul
);
588 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
589 } else if (opt_jul
) {
590 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
592 if (ev
.loglevel
== -1) {
593 ERR("Unknown loglevel %s", opt_loglevel
);
594 ret
= -LTTNG_ERR_INVALID
;
598 assert(opt_userspace
|| opt_jul
);
601 } else if (opt_jul
) {
602 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
608 ret
= check_exclusion_subsets("*", opt_exclude
,
609 &exclusion_count
, &exclusion_list
);
610 if (ret
== CMD_ERROR
) {
615 ret
= lttng_enable_event_with_exclusions(handle
,
618 exclusion_count
, exclusion_list
);
621 case LTTNG_ERR_KERN_EVENT_EXIST
:
622 WARN("Kernel events already enabled (channel %s, session %s)",
623 print_channel_name(channel_name
), session_name
);
626 ERR("Events: %s (channel %s, session %s)",
628 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
629 ? print_raw_channel_name(channel_name
)
630 : print_channel_name(channel_name
),
637 switch (opt_event_type
) {
638 case LTTNG_EVENT_TRACEPOINT
:
639 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
640 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
641 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
642 get_domain_str(dom
.type
),
644 print_channel_name(channel_name
),
646 free(exclusion_string
);
648 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
649 MSG("All %s tracepoints%s are enabled in channel %s",
650 get_domain_str(dom
.type
),
652 print_channel_name(channel_name
));
653 free(exclusion_string
);
656 case LTTNG_EVENT_SYSCALL
:
658 MSG("All kernel system calls are enabled in channel %s",
659 print_channel_name(channel_name
));
662 case LTTNG_EVENT_ALL
:
663 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
664 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
665 MSG("All %s events%s are enabled in channel %s for loglevel %s",
666 get_domain_str(dom
.type
),
668 print_channel_name(channel_name
),
670 free(exclusion_string
);
672 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
673 MSG("All %s events%s are enabled in channel %s",
674 get_domain_str(dom
.type
),
676 print_channel_name(channel_name
));
677 free(exclusion_string
);
682 * We should not be here since lttng_enable_event should have
683 * failed on the event type.
689 ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
690 opt_filter
, exclusion_count
, exclusion_list
);
693 case LTTNG_ERR_FILTER_EXIST
:
694 WARN("Filter on all events is already enabled"
695 " (channel %s, session %s)",
696 print_channel_name(channel_name
), session_name
);
699 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
701 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
702 ? print_raw_channel_name(channel_name
)
703 : print_channel_name(channel_name
),
704 session_name
, opt_filter
);
709 MSG("Filter '%s' successfully set", opt_filter
);
715 /* Strip event list */
716 event_name
= strtok(opt_event_list
, ",");
717 while (event_name
!= NULL
) {
718 /* Copy name and type of the event */
719 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
720 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
721 ev
.type
= opt_event_type
;
723 /* Kernel tracer action */
725 DBG("Enabling kernel event %s for channel %s",
727 print_channel_name(channel_name
));
729 switch (opt_event_type
) {
730 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
731 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
733 case LTTNG_EVENT_TRACEPOINT
:
735 case LTTNG_EVENT_PROBE
:
736 ret
= parse_probe_opts(&ev
, opt_probe
);
738 ERR("Unable to parse probe options");
743 case LTTNG_EVENT_FUNCTION
:
744 ret
= parse_probe_opts(&ev
, opt_function
);
746 ERR("Unable to parse function probe options");
751 case LTTNG_EVENT_FUNCTION_ENTRY
:
752 strncpy(ev
.attr
.ftrace
.symbol_name
, opt_function_entry_symbol
,
753 LTTNG_SYMBOL_NAME_LEN
);
754 ev
.attr
.ftrace
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
756 case LTTNG_EVENT_SYSCALL
:
757 MSG("per-syscall selection not supported yet. Use \"-a\" "
758 "for all syscalls.");
764 /* kernel loglevels not implemented */
765 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
766 } else if (opt_userspace
) { /* User-space tracer action */
768 if (opt_cmd_name
!= NULL
|| opt_pid
) {
769 MSG("Only supporting tracing all UST processes (-u) for now.");
775 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name
,
776 print_channel_name(channel_name
), opt_loglevel
? : "<all>");
778 switch (opt_event_type
) {
779 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
781 case LTTNG_EVENT_TRACEPOINT
:
782 /* Copy name and type of the event */
783 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
784 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
785 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
787 case LTTNG_EVENT_PROBE
:
788 case LTTNG_EVENT_FUNCTION
:
789 case LTTNG_EVENT_FUNCTION_ENTRY
:
790 case LTTNG_EVENT_SYSCALL
:
792 ERR("Event type not available for user-space tracing");
793 ret
= CMD_UNSUPPORTED
;
798 if (opt_event_type
!= LTTNG_EVENT_ALL
&& opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
799 ERR("Exclusion option can only be used with tracepoint events");
803 /* Free previously allocated items */
804 if (exclusion_list
!= NULL
) {
805 while (exclusion_count
--) {
806 free(exclusion_list
[exclusion_count
]);
808 free(exclusion_list
);
809 exclusion_list
= NULL
;
811 /* Check for proper subsets */
812 ret
= check_exclusion_subsets(event_name
, opt_exclude
,
813 &exclusion_count
, &exclusion_list
);
814 if (ret
== CMD_ERROR
) {
819 ev
.loglevel_type
= opt_loglevel_type
;
821 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
822 if (ev
.loglevel
== -1) {
823 ERR("Unknown loglevel %s", opt_loglevel
);
824 ret
= -LTTNG_ERR_INVALID
;
830 } else if (opt_jul
) {
831 if (opt_event_type
!= LTTNG_EVENT_ALL
&&
832 opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
833 ERR("Event type not supported for JUL domain.");
834 ret
= CMD_UNSUPPORTED
;
838 ev
.loglevel_type
= opt_loglevel_type
;
840 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
841 if (ev
.loglevel
== -1) {
842 ERR("Unknown loglevel %s", opt_loglevel
);
843 ret
= -LTTNG_ERR_INVALID
;
847 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
849 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
850 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
851 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
853 print_missing_domain();
859 char *exclusion_string
;
861 ret
= lttng_enable_event_with_exclusions(handle
,
863 NULL
, exclusion_count
, exclusion_list
);
864 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
866 /* Turn ret to positive value to handle the positive error code */
868 case LTTNG_ERR_KERN_EVENT_EXIST
:
869 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
872 print_channel_name(channel_name
), session_name
);
875 ERR("Event %s%s: %s (channel %s, session %s)", event_name
,
878 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
879 ? print_raw_channel_name(channel_name
)
880 : print_channel_name(channel_name
),
886 MSG("%s event %s%s created in channel %s",
887 get_domain_str(dom
.type
), event_name
,
889 print_channel_name(channel_name
));
891 free(exclusion_string
);
895 char *exclusion_string
;
897 ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
898 opt_filter
, exclusion_count
, exclusion_list
);
899 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
903 case LTTNG_ERR_FILTER_EXIST
:
904 WARN("Filter on event %s%s is already enabled"
905 " (channel %s, session %s)",
908 print_channel_name(channel_name
), session_name
);
911 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev
.name
,
914 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
915 ? print_raw_channel_name(channel_name
)
916 : print_channel_name(channel_name
),
917 session_name
, opt_filter
);
920 free(exclusion_string
);
923 MSG("Event %s%s: Filter '%s' successfully set",
924 event_name
, exclusion_string
,
927 free(exclusion_string
);
931 event_name
= strtok(NULL
, ",");
939 lttng_destroy_handle(handle
);
941 if (exclusion_list
!= NULL
) {
942 while (exclusion_count
--) {
943 free(exclusion_list
[exclusion_count
]);
945 free(exclusion_list
);
952 * Add event to trace session
954 int cmd_enable_events(int argc
, const char **argv
)
956 int opt
, ret
= CMD_SUCCESS
;
957 static poptContext pc
;
958 char *session_name
= NULL
;
961 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
962 poptReadDefaultConfig(pc
, 0);
964 /* Default event type */
965 opt_event_type
= LTTNG_EVENT_ALL
;
967 while ((opt
= poptGetNextOpt(pc
)) != -1) {
973 opt_event_type
= LTTNG_EVENT_TRACEPOINT
;
976 opt_event_type
= LTTNG_EVENT_PROBE
;
979 opt_event_type
= LTTNG_EVENT_FUNCTION
;
981 case OPT_FUNCTION_ENTRY
:
982 opt_event_type
= LTTNG_EVENT_FUNCTION_ENTRY
;
985 opt_event_type
= LTTNG_EVENT_SYSCALL
;
991 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_RANGE
;
992 opt_loglevel
= poptGetOptArg(pc
);
994 case OPT_LOGLEVEL_ONLY
:
995 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_SINGLE
;
996 opt_loglevel
= poptGetOptArg(pc
);
998 case OPT_LIST_OPTIONS
:
999 list_cmd_options(stdout
, long_options
);
1007 ret
= CMD_UNDEFINED
;
1011 /* Validate event type. Multiple event type are not supported. */
1012 if (event_type
== -1) {
1013 event_type
= opt_event_type
;
1015 if (event_type
!= opt_event_type
) {
1016 ERR("Multiple event type not supported.");
1023 opt_event_list
= (char*) poptGetArg(pc
);
1024 if (opt_event_list
== NULL
&& opt_enable_all
== 0) {
1025 ERR("Missing event name(s).\n");
1031 if (!opt_session_name
) {
1032 session_name
= get_session_name();
1033 if (session_name
== NULL
) {
1038 session_name
= opt_session_name
;
1041 ret
= enable_events(session_name
);
1044 if (opt_session_name
== NULL
) {
1048 poptFreeContext(pc
);