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 <src/common/sessiond-comm/sessiond-comm.h>
30 #include <common/compat/string.h>
33 #include <common/mi-lttng.h>
35 #include "../command.h"
37 #if (LTTNG_SYMBOL_NAME_LEN == 256)
38 #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255"
41 static char *opt_event_list
;
42 static int opt_event_type
;
43 static const char *opt_loglevel
;
44 static int opt_loglevel_type
;
45 static int opt_kernel
;
46 static char *opt_session_name
;
47 static int opt_userspace
;
50 static int opt_python
;
51 static int opt_enable_all
;
52 static char *opt_probe
;
53 static char *opt_function
;
54 static char *opt_channel_name
;
55 static char *opt_filter
;
56 static char *opt_exclude
;
72 static struct lttng_handle
*handle
;
73 static struct mi_writer
*writer
;
75 static struct poptOption long_options
[] = {
76 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
77 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
78 {"session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
79 {"all", 'a', POPT_ARG_VAL
, &opt_enable_all
, 1, 0, 0},
80 {"channel", 'c', POPT_ARG_STRING
, &opt_channel_name
, 0, 0, 0},
81 {"kernel", 'k', POPT_ARG_VAL
, &opt_kernel
, 1, 0, 0},
82 {"userspace", 'u', POPT_ARG_NONE
, 0, OPT_USERSPACE
, 0, 0},
83 {"jul", 'j', POPT_ARG_VAL
, &opt_jul
, 1, 0, 0},
84 {"log4j", 'l', POPT_ARG_VAL
, &opt_log4j
, 1, 0, 0},
85 {"python", 'p', POPT_ARG_VAL
, &opt_python
, 1, 0, 0},
86 {"tracepoint", 0, POPT_ARG_NONE
, 0, OPT_TRACEPOINT
, 0, 0},
87 {"probe", 0, POPT_ARG_STRING
, &opt_probe
, OPT_PROBE
, 0, 0},
88 {"function", 0, POPT_ARG_STRING
, &opt_function
, OPT_FUNCTION
, 0, 0},
89 {"syscall", 0, POPT_ARG_NONE
, 0, OPT_SYSCALL
, 0, 0},
90 {"loglevel", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL
, 0, 0},
91 {"loglevel-only", 0, POPT_ARG_STRING
, 0, OPT_LOGLEVEL_ONLY
, 0, 0},
92 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
93 {"filter", 'f', POPT_ARG_STRING
, &opt_filter
, OPT_FILTER
, 0, 0},
94 {"exclude", 'x', POPT_ARG_STRING
, &opt_exclude
, OPT_EXCLUDE
, 0, 0},
101 static void usage(FILE *ofp
)
103 fprintf(ofp
, "usage: lttng enable-event NAME[,NAME2,...] (-k | -u | -j | -l | -p) [OPTIONS] \n");
105 fprintf(ofp
, "Options:\n");
106 fprintf(ofp
, " -h, --help Show this help\n");
107 fprintf(ofp
, " --list-options Simple listing of options\n");
108 fprintf(ofp
, " -s, --session NAME Apply to session name\n");
109 fprintf(ofp
, " -c, --channel NAME Apply to this channel\n");
110 fprintf(ofp
, " -a, --all Enable all tracepoints and syscalls\n");
111 fprintf(ofp
, " -k, --kernel Apply to the kernel tracer\n");
112 fprintf(ofp
, " -u, --userspace Apply to the user-space tracer\n");
113 fprintf(ofp
, " -j, --jul Apply to Java application using JUL\n");
114 fprintf(ofp
, " -l, --log4j Apply for Java application using LOG4j\n");
115 fprintf(ofp
, " -p, --python Apply for Python application\n");
117 fprintf(ofp
, "Event options:\n");
118 fprintf(ofp
, " --tracepoint Tracepoint event (default)\n");
119 fprintf(ofp
, " - userspace tracer supports wildcards at end of string.\n");
120 fprintf(ofp
, " Don't forget to quote to deal with bash expansion.\n");
121 fprintf(ofp
, " e.g.:\n");
122 fprintf(ofp
, " \"*\"\n");
123 fprintf(ofp
, " \"app_component:na*\"\n");
124 fprintf(ofp
, " --probe (addr | symbol | symbol+offset)\n");
125 fprintf(ofp
, " Dynamic probe.\n");
126 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
127 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
128 fprintf(ofp
, " --function (addr | symbol | symbol+offset)\n");
129 fprintf(ofp
, " Dynamic function entry/return probe.\n");
130 fprintf(ofp
, " Addr and offset can be octal (0NNN...),\n");
131 fprintf(ofp
, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
132 fprintf(ofp
, " --syscall System call event\n");
134 fprintf(ofp
, " --loglevel name\n");
135 fprintf(ofp
, " Tracepoint loglevel range from 0 to loglevel.\n");
136 fprintf(ofp
, " For JUL/LOG4j/Python domains, see the table below for the range values.\n");
137 fprintf(ofp
, " --loglevel-only name\n");
138 fprintf(ofp
, " Tracepoint loglevel (only this loglevel)\n");
140 fprintf(ofp
, " The loglevel or loglevel-only options should be\n");
141 fprintf(ofp
, " combined with a tracepoint name or tracepoint\n");
142 fprintf(ofp
, " wildcard.\n");
143 fprintf(ofp
, " Available loglevels:\n");
144 fprintf(ofp
, " (higher value is more verbose)\n");
145 fprintf(ofp
, " TRACE_EMERG = 0\n");
146 fprintf(ofp
, " TRACE_ALERT = 1\n");
147 fprintf(ofp
, " TRACE_CRIT = 2\n");
148 fprintf(ofp
, " TRACE_ERR = 3\n");
149 fprintf(ofp
, " TRACE_WARNING = 4\n");
150 fprintf(ofp
, " TRACE_NOTICE = 5\n");
151 fprintf(ofp
, " TRACE_INFO = 6\n");
152 fprintf(ofp
, " TRACE_DEBUG_SYSTEM = 7\n");
153 fprintf(ofp
, " TRACE_DEBUG_PROGRAM = 8\n");
154 fprintf(ofp
, " TRACE_DEBUG_PROCESS = 9\n");
155 fprintf(ofp
, " TRACE_DEBUG_MODULE = 10\n");
156 fprintf(ofp
, " TRACE_DEBUG_UNIT = 11\n");
157 fprintf(ofp
, " TRACE_DEBUG_FUNCTION = 12\n");
158 fprintf(ofp
, " TRACE_DEBUG_LINE = 13\n");
159 fprintf(ofp
, " TRACE_DEBUG = 14\n");
160 fprintf(ofp
, " (shortcuts such as \"system\" are allowed)\n");
162 fprintf(ofp
, " Available JUL domain loglevels:\n");
163 fprintf(ofp
, " JUL_OFF = INT32_MAX\n");
164 fprintf(ofp
, " JUL_SEVERE = %d\n", LTTNG_LOGLEVEL_JUL_SEVERE
);
165 fprintf(ofp
, " JUL_WARNING = %d\n", LTTNG_LOGLEVEL_JUL_WARNING
);
166 fprintf(ofp
, " JUL_INFO = %d\n", LTTNG_LOGLEVEL_JUL_INFO
);
167 fprintf(ofp
, " JUL_CONFIG = %d\n", LTTNG_LOGLEVEL_JUL_CONFIG
);
168 fprintf(ofp
, " JUL_FINE = %d\n", LTTNG_LOGLEVEL_JUL_FINE
);
169 fprintf(ofp
, " JUL_FINER = %d\n", LTTNG_LOGLEVEL_JUL_FINER
);
170 fprintf(ofp
, " JUL_FINEST = %d\n", LTTNG_LOGLEVEL_JUL_FINEST
);
171 fprintf(ofp
, " JUL_ALL = INT32_MIN\n");
172 fprintf(ofp
, " (shortcuts such as \"severe\" are allowed)\n");
174 fprintf(ofp
, " Available LOG4j domain loglevels:\n");
175 fprintf(ofp
, " LOG4J_OFF = INT32_MAX\n");
176 fprintf(ofp
, " LOG4J_FATAL = %d\n", LTTNG_LOGLEVEL_LOG4J_FATAL
);
177 fprintf(ofp
, " LOG4J_ERROR = %d\n", LTTNG_LOGLEVEL_LOG4J_ERROR
);
178 fprintf(ofp
, " LOG4J_WARN = %d\n", LTTNG_LOGLEVEL_LOG4J_WARN
);
179 fprintf(ofp
, " LOG4J_INFO = %d\n", LTTNG_LOGLEVEL_LOG4J_INFO
);
180 fprintf(ofp
, " LOG4J_DEBUG = %d\n", LTTNG_LOGLEVEL_LOG4J_DEBUG
);
181 fprintf(ofp
, " LOG4J_TRACE = %d\n", LTTNG_LOGLEVEL_LOG4J_TRACE
);
182 fprintf(ofp
, " LOG4J_ALL = INT32_MIN\n");
183 fprintf(ofp
, " (shortcuts such as \"severe\" are allowed)\n");
185 fprintf(ofp
, " Available Python domain loglevels:\n");
186 fprintf(ofp
, " PYTHON_CRITICAL = %d\n", LTTNG_LOGLEVEL_PYTHON_CRITICAL
);
187 fprintf(ofp
, " PYTHON_ERROR = %d\n", LTTNG_LOGLEVEL_PYTHON_ERROR
);
188 fprintf(ofp
, " PYTHON_WARNING = %d\n", LTTNG_LOGLEVEL_PYTHON_WARNING
);
189 fprintf(ofp
, " PYTHON_INFO = %d\n", LTTNG_LOGLEVEL_PYTHON_INFO
);
190 fprintf(ofp
, " PYTHON_DEBUG = %d\n", LTTNG_LOGLEVEL_PYTHON_DEBUG
);
191 fprintf(ofp
, " PYTHON_NOTSET = %d\n", LTTNG_LOGLEVEL_PYTHON_NOTSET
);
192 fprintf(ofp
, " (shortcuts such as \"critical\" are allowed)\n");
194 fprintf(ofp
, " -f, --filter \'expression\'\n");
195 fprintf(ofp
, " Filter expression on event fields and context.\n");
196 fprintf(ofp
, " Event recording depends on evaluation.\n");
197 fprintf(ofp
, " Only specify on first activation of\n");
198 fprintf(ofp
, " a given event within a session.\n");
199 fprintf(ofp
, " Filter only allowed when enabling\n");
200 fprintf(ofp
, " events within a session before tracing\n");
201 fprintf(ofp
, " is started. If the filter fails to link\n");
202 fprintf(ofp
, " with the event within the traced domain,\n");
203 fprintf(ofp
, " the event will be discarded. Currently,\n");
204 fprintf(ofp
, " filter is only implemented for the user-space\n");
205 fprintf(ofp
, " tracer.\n");
206 fprintf(ofp
, " Expression examples:.\n");
208 fprintf(ofp
, " 'intfield > 500 && intfield < 503'\n");
209 fprintf(ofp
, " '(strfield == \"test\" || intfield != 10) && intfield > 33'\n");
210 fprintf(ofp
, " 'doublefield > 1.1 && intfield < 5.3'\n");
212 fprintf(ofp
, " Wildcards are allowed at the end of strings:\n");
213 fprintf(ofp
, " 'seqfield1 == \"te*\"'\n");
214 fprintf(ofp
, " In string literals, the escape character is '\\'.\n");
215 fprintf(ofp
, " Use '\\*' for the '*' character, and '\\\\' for\n");
216 fprintf(ofp
, " the '\\' character. Wildcard match any sequence of,\n");
217 fprintf(ofp
, " characters including an empty sub-string (match 0 or\n");
218 fprintf(ofp
, " more characters).\n");
220 fprintf(ofp
, " Context information can be used for filtering. The\n");
221 fprintf(ofp
, " examples below show usage of context filtering on\n");
222 fprintf(ofp
, " process name (with a wildcard), process ID range, and\n");
223 fprintf(ofp
, " unique thread ID for filtering. The process and\n");
224 fprintf(ofp
, " thread ID of running applications can be found under\n");
225 fprintf(ofp
, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n");
227 fprintf(ofp
, " '$ctx.procname == \"demo*\"'\n");
228 fprintf(ofp
, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n");
229 fprintf(ofp
, " '$ctx.vtid == 1234'\n");
230 fprintf(ofp
, " -x, --exclude LIST\n");
231 fprintf(ofp
, " Add exclusions to UST tracepoints:\n");
232 fprintf(ofp
, " Events that match any of the items\n");
233 fprintf(ofp
, " in the comma-separated LIST are not\n");
234 fprintf(ofp
, " enabled, even if they match a wildcard\n");
235 fprintf(ofp
, " definition of the event.\n");
240 * Parse probe options.
242 static int parse_probe_opts(struct lttng_event
*ev
, char *opt
)
244 int ret
= CMD_SUCCESS
;
247 #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */
248 char name
[LTTNG_SYMBOL_NAME_LEN
];
255 /* Check for symbol+offset */
256 match
= sscanf(opt
, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API
257 "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API
"s", name
, s_hex
);
259 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
260 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
261 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
262 if (*s_hex
== '\0') {
263 ERR("Invalid probe offset %s", s_hex
);
267 ev
->attr
.probe
.offset
= strtoul(s_hex
, NULL
, 0);
268 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
269 ev
->attr
.probe
.addr
= 0;
273 /* Check for symbol */
274 if (isalpha(name
[0])) {
275 match
= sscanf(opt
, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API
"s",
278 strncpy(ev
->attr
.probe
.symbol_name
, name
, LTTNG_SYMBOL_NAME_LEN
);
279 ev
->attr
.probe
.symbol_name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
280 DBG("probe symbol %s", ev
->attr
.probe
.symbol_name
);
281 ev
->attr
.probe
.offset
= 0;
282 DBG("probe offset %" PRIu64
, ev
->attr
.probe
.offset
);
283 ev
->attr
.probe
.addr
= 0;
288 /* Check for address */
289 match
= sscanf(opt
, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API
"s", s_hex
);
291 if (*s_hex
== '\0') {
292 ERR("Invalid probe address %s", s_hex
);
296 ev
->attr
.probe
.addr
= strtoul(s_hex
, NULL
, 0);
297 DBG("probe addr %" PRIu64
, ev
->attr
.probe
.addr
);
298 ev
->attr
.probe
.offset
= 0;
299 memset(ev
->attr
.probe
.symbol_name
, 0, LTTNG_SYMBOL_NAME_LEN
);
311 * Maps LOG4j loglevel from string to value
313 static int loglevel_log4j_str_to_value(const char *inputstr
)
316 char str
[LTTNG_SYMBOL_NAME_LEN
];
318 if (!inputstr
|| strlen(inputstr
) == 0) {
323 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
324 * added at the end of the loop so a the upper bound we avoid the overflow.
326 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
327 str
[i
] = toupper(inputstr
[i
]);
332 if (!strcmp(str
, "LOG4J_OFF") || !strcmp(str
, "OFF")) {
333 return LTTNG_LOGLEVEL_LOG4J_OFF
;
334 } else if (!strcmp(str
, "LOG4J_FATAL") || !strcmp(str
, "FATAL")) {
335 return LTTNG_LOGLEVEL_LOG4J_FATAL
;
336 } else if (!strcmp(str
, "LOG4J_ERROR") || !strcmp(str
, "ERROR")) {
337 return LTTNG_LOGLEVEL_LOG4J_ERROR
;
338 } else if (!strcmp(str
, "LOG4J_WARN") || !strcmp(str
, "WARN")) {
339 return LTTNG_LOGLEVEL_LOG4J_WARN
;
340 } else if (!strcmp(str
, "LOG4J_INFO") || !strcmp(str
, "INFO")) {
341 return LTTNG_LOGLEVEL_LOG4J_INFO
;
342 } else if (!strcmp(str
, "LOG4J_DEBUG") || !strcmp(str
, "DEBUG")) {
343 return LTTNG_LOGLEVEL_LOG4J_DEBUG
;
344 } else if (!strcmp(str
, "LOG4J_TRACE") || !strcmp(str
, "TRACE")) {
345 return LTTNG_LOGLEVEL_LOG4J_TRACE
;
346 } else if (!strcmp(str
, "LOG4J_ALL") || !strcmp(str
, "ALL")) {
347 return LTTNG_LOGLEVEL_LOG4J_ALL
;
354 * Maps JUL loglevel from string to value
356 static int loglevel_jul_str_to_value(const char *inputstr
)
359 char str
[LTTNG_SYMBOL_NAME_LEN
];
361 if (!inputstr
|| strlen(inputstr
) == 0) {
366 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
367 * added at the end of the loop so a the upper bound we avoid the overflow.
369 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
370 str
[i
] = toupper(inputstr
[i
]);
375 if (!strcmp(str
, "JUL_OFF") || !strcmp(str
, "OFF")) {
376 return LTTNG_LOGLEVEL_JUL_OFF
;
377 } else if (!strcmp(str
, "JUL_SEVERE") || !strcmp(str
, "SEVERE")) {
378 return LTTNG_LOGLEVEL_JUL_SEVERE
;
379 } else if (!strcmp(str
, "JUL_WARNING") || !strcmp(str
, "WARNING")) {
380 return LTTNG_LOGLEVEL_JUL_WARNING
;
381 } else if (!strcmp(str
, "JUL_INFO") || !strcmp(str
, "INFO")) {
382 return LTTNG_LOGLEVEL_JUL_INFO
;
383 } else if (!strcmp(str
, "JUL_CONFIG") || !strcmp(str
, "CONFIG")) {
384 return LTTNG_LOGLEVEL_JUL_CONFIG
;
385 } else if (!strcmp(str
, "JUL_FINE") || !strcmp(str
, "FINE")) {
386 return LTTNG_LOGLEVEL_JUL_FINE
;
387 } else if (!strcmp(str
, "JUL_FINER") || !strcmp(str
, "FINER")) {
388 return LTTNG_LOGLEVEL_JUL_FINER
;
389 } else if (!strcmp(str
, "JUL_FINEST") || !strcmp(str
, "FINEST")) {
390 return LTTNG_LOGLEVEL_JUL_FINEST
;
391 } else if (!strcmp(str
, "JUL_ALL") || !strcmp(str
, "ALL")) {
392 return LTTNG_LOGLEVEL_JUL_ALL
;
399 * Maps Python loglevel from string to value
401 static int loglevel_python_str_to_value(const char *inputstr
)
404 char str
[LTTNG_SYMBOL_NAME_LEN
];
406 if (!inputstr
|| strlen(inputstr
) == 0) {
411 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
412 * added at the end of the loop so a the upper bound we avoid the overflow.
414 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
415 str
[i
] = toupper(inputstr
[i
]);
420 if (!strcmp(str
, "PYTHON_CRITICAL") || !strcmp(str
, "CRITICAL")) {
421 return LTTNG_LOGLEVEL_PYTHON_CRITICAL
;
422 } else if (!strcmp(str
, "PYTHON_ERROR") || !strcmp(str
, "ERROR")) {
423 return LTTNG_LOGLEVEL_PYTHON_ERROR
;
424 } else if (!strcmp(str
, "PYTHON_WARNING") || !strcmp(str
, "WARNING")) {
425 return LTTNG_LOGLEVEL_PYTHON_WARNING
;
426 } else if (!strcmp(str
, "PYTHON_INFO") || !strcmp(str
, "INFO")) {
427 return LTTNG_LOGLEVEL_PYTHON_INFO
;
428 } else if (!strcmp(str
, "PYTNON_DEBUG") || !strcmp(str
, "DEBUG")) {
429 return LTTNG_LOGLEVEL_PYTHON_DEBUG
;
430 } else if (!strcmp(str
, "PYTHON_NOTSET") || !strcmp(str
, "NOTSET")) {
431 return LTTNG_LOGLEVEL_PYTHON_NOTSET
;
438 * Maps loglevel from string to value
441 int loglevel_str_to_value(const char *inputstr
)
444 char str
[LTTNG_SYMBOL_NAME_LEN
];
446 if (!inputstr
|| strlen(inputstr
) == 0) {
451 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
452 * added at the end of the loop so a the upper bound we avoid the overflow.
454 while (i
< (LTTNG_SYMBOL_NAME_LEN
- 1) && inputstr
[i
] != '\0') {
455 str
[i
] = toupper(inputstr
[i
]);
459 if (!strcmp(str
, "TRACE_EMERG") || !strcmp(str
, "EMERG")) {
460 return LTTNG_LOGLEVEL_EMERG
;
461 } else if (!strcmp(str
, "TRACE_ALERT") || !strcmp(str
, "ALERT")) {
462 return LTTNG_LOGLEVEL_ALERT
;
463 } else if (!strcmp(str
, "TRACE_CRIT") || !strcmp(str
, "CRIT")) {
464 return LTTNG_LOGLEVEL_CRIT
;
465 } else if (!strcmp(str
, "TRACE_ERR") || !strcmp(str
, "ERR")) {
466 return LTTNG_LOGLEVEL_ERR
;
467 } else if (!strcmp(str
, "TRACE_WARNING") || !strcmp(str
, "WARNING")) {
468 return LTTNG_LOGLEVEL_WARNING
;
469 } else if (!strcmp(str
, "TRACE_NOTICE") || !strcmp(str
, "NOTICE")) {
470 return LTTNG_LOGLEVEL_NOTICE
;
471 } else if (!strcmp(str
, "TRACE_INFO") || !strcmp(str
, "INFO")) {
472 return LTTNG_LOGLEVEL_INFO
;
473 } else if (!strcmp(str
, "TRACE_DEBUG_SYSTEM") || !strcmp(str
, "DEBUG_SYSTEM") || !strcmp(str
, "SYSTEM")) {
474 return LTTNG_LOGLEVEL_DEBUG_SYSTEM
;
475 } else if (!strcmp(str
, "TRACE_DEBUG_PROGRAM") || !strcmp(str
, "DEBUG_PROGRAM") || !strcmp(str
, "PROGRAM")) {
476 return LTTNG_LOGLEVEL_DEBUG_PROGRAM
;
477 } else if (!strcmp(str
, "TRACE_DEBUG_PROCESS") || !strcmp(str
, "DEBUG_PROCESS") || !strcmp(str
, "PROCESS")) {
478 return LTTNG_LOGLEVEL_DEBUG_PROCESS
;
479 } else if (!strcmp(str
, "TRACE_DEBUG_MODULE") || !strcmp(str
, "DEBUG_MODULE") || !strcmp(str
, "MODULE")) {
480 return LTTNG_LOGLEVEL_DEBUG_MODULE
;
481 } else if (!strcmp(str
, "TRACE_DEBUG_UNIT") || !strcmp(str
, "DEBUG_UNIT") || !strcmp(str
, "UNIT")) {
482 return LTTNG_LOGLEVEL_DEBUG_UNIT
;
483 } else if (!strcmp(str
, "TRACE_DEBUG_FUNCTION") || !strcmp(str
, "DEBUG_FUNCTION") || !strcmp(str
, "FUNCTION")) {
484 return LTTNG_LOGLEVEL_DEBUG_FUNCTION
;
485 } else if (!strcmp(str
, "TRACE_DEBUG_LINE") || !strcmp(str
, "DEBUG_LINE") || !strcmp(str
, "LINE")) {
486 return LTTNG_LOGLEVEL_DEBUG_LINE
;
487 } else if (!strcmp(str
, "TRACE_DEBUG") || !strcmp(str
, "DEBUG")) {
488 return LTTNG_LOGLEVEL_DEBUG
;
495 const char *print_channel_name(const char *name
)
497 return name
? : DEFAULT_CHANNEL_NAME
;
501 const char *print_raw_channel_name(const char *name
)
503 return name
? : "<default>";
507 * Mi print exlcusion list
510 int mi_print_exclusion(int count
, char **names
)
520 ret
= mi_lttng_writer_open_element(writer
, config_element_exclusions
);
525 for (i
= 0; i
< count
; i
++) {
526 ret
= mi_lttng_writer_write_element_string(writer
,
527 config_element_exclusion
, names
[i
]);
533 /* Close exclusions element */
534 ret
= mi_lttng_writer_close_element(writer
);
541 * Return allocated string for pretty-printing exclusion names.
544 char *print_exclusions(int count
, char **names
)
548 const char *preamble
= " excluding ";
555 /* calculate total required length */
556 for (i
= 0; i
< count
; i
++) {
557 length
+= strlen(names
[i
]) + 1;
560 /* add length of preamble + one for NUL - one for last (missing) comma */
561 length
+= strlen(preamble
);
562 ret
= zmalloc(length
);
566 strncpy(ret
, preamble
, length
);
567 for (i
= 0; i
< count
; i
++) {
568 strcat(ret
, names
[i
]);
569 if (i
!= count
- 1) {
578 * Compare list of exclusions against an event name.
579 * Return a list of legal exclusion names.
580 * Produce an error or a warning about others (depending on the situation)
583 int check_exclusion_subsets(const char *event_name
,
584 const char *exclusions
,
585 int *exclusion_count_ptr
,
586 char ***exclusion_list_ptr
)
588 const char *excluder_ptr
;
589 const char *event_ptr
;
590 const char *next_excluder
;
592 int exclusion_count
= 0;
593 char **exclusion_list
= NULL
;
594 int ret
= CMD_SUCCESS
;
596 if (event_name
[strlen(event_name
) - 1] != '*') {
597 ERR("Event %s: Excluders can only be used with wildcarded events", event_name
);
601 next_excluder
= exclusions
;
602 while (*next_excluder
!= 0) {
603 event_ptr
= event_name
;
604 excluder_ptr
= next_excluder
;
605 excluder_length
= strcspn(next_excluder
, ",");
607 /* Scan both the excluder and the event letter by letter */
615 /* Event is a subset of the excluder */
616 ERR("Event %s: %.*s excludes all events from %s",
625 char **new_exclusion_list
;
627 /* Excluder is a proper subset of event */
628 string
= lttng_strndup(next_excluder
, excluder_length
);
630 PERROR("lttng_strndup error");
633 new_exclusion_list
= realloc(exclusion_list
,
634 sizeof(char *) * (exclusion_count
+ 1));
635 if (!new_exclusion_list
) {
640 exclusion_list
= new_exclusion_list
;
642 exclusion_list
[exclusion_count
- 1] = string
;
646 /* Excluder and event sets have no common elements */
647 WARN("Event %s: %.*s does not exclude any events from %s",
658 next_excluder
+= excluder_length
;
659 if (*next_excluder
== ',') {
665 while (exclusion_count
--) {
666 free(exclusion_list
[exclusion_count
]);
668 if (exclusion_list
!= NULL
) {
669 free(exclusion_list
);
671 exclusion_list
= NULL
;
675 *exclusion_count_ptr
= exclusion_count
;
676 *exclusion_list_ptr
= exclusion_list
;
680 * Enabling event using the lttng API.
681 * Note: in case of error only the last error code will be return.
683 static int enable_events(char *session_name
)
685 int ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
;
686 int error_holder
= CMD_SUCCESS
, warn
= 0, error
= 0, success
= 1;
687 char *event_name
, *channel_name
= NULL
;
688 struct lttng_event ev
;
689 struct lttng_domain dom
;
690 int exclusion_count
= 0;
691 char **exclusion_list
= NULL
;
693 memset(&ev
, 0, sizeof(ev
));
694 memset(&dom
, 0, sizeof(dom
));
698 WARN("Kernel loglevels are not supported.");
702 /* Create lttng domain */
704 dom
.type
= LTTNG_DOMAIN_KERNEL
;
705 dom
.buf_type
= LTTNG_BUFFER_GLOBAL
;
706 } else if (opt_userspace
) {
707 dom
.type
= LTTNG_DOMAIN_UST
;
709 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
710 } else if (opt_jul
) {
711 dom
.type
= LTTNG_DOMAIN_JUL
;
713 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
714 } else if (opt_log4j
) {
715 dom
.type
= LTTNG_DOMAIN_LOG4J
;
717 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
718 } else if (opt_python
) {
719 dom
.type
= LTTNG_DOMAIN_PYTHON
;
721 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
723 /* Checked by the caller. */
729 case LTTNG_DOMAIN_KERNEL
:
730 case LTTNG_DOMAIN_JUL
:
731 case LTTNG_DOMAIN_LOG4J
:
732 case LTTNG_DOMAIN_PYTHON
:
733 ERR("Event name exclusions are not yet implemented for %s events",
734 get_domain_str(dom
.type
));
737 case LTTNG_DOMAIN_UST
:
738 /* Exclusions supported */
745 channel_name
= opt_channel_name
;
747 handle
= lttng_create_handle(session_name
, &dom
);
748 if (handle
== NULL
) {
755 /* Open a events element */
756 ret
= mi_lttng_writer_open_element(writer
, config_element_events
);
763 if (opt_enable_all
) {
764 /* Default setup for enable all */
766 ev
.type
= opt_event_type
;
767 strcpy(ev
.name
, "*");
768 /* kernel loglevels not implemented */
769 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
771 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
772 strcpy(ev
.name
, "*");
773 ev
.loglevel_type
= opt_loglevel_type
;
775 assert(opt_userspace
|| opt_jul
|| opt_log4j
|| opt_python
);
777 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
778 } else if (opt_jul
) {
779 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
780 } else if (opt_log4j
) {
781 ev
.loglevel
= loglevel_log4j_str_to_value(opt_loglevel
);
782 } else if (opt_python
) {
783 ev
.loglevel
= loglevel_python_str_to_value(opt_loglevel
);
785 if (ev
.loglevel
== -1) {
786 ERR("Unknown loglevel %s", opt_loglevel
);
787 ret
= -LTTNG_ERR_INVALID
;
791 assert(opt_userspace
|| opt_jul
|| opt_log4j
|| opt_python
);
794 } else if (opt_jul
) {
795 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
796 } else if (opt_log4j
) {
797 ev
.loglevel
= LTTNG_LOGLEVEL_LOG4J_ALL
;
798 } else if (opt_python
) {
799 ev
.loglevel
= LTTNG_LOGLEVEL_PYTHON_DEBUG
;
805 ret
= check_exclusion_subsets("*", opt_exclude
,
806 &exclusion_count
, &exclusion_list
);
807 if (ret
== CMD_ERROR
) {
813 ret
= lttng_enable_event_with_exclusions(handle
,
816 exclusion_count
, exclusion_list
);
819 case LTTNG_ERR_KERN_EVENT_EXIST
:
820 WARN("Kernel events already enabled (channel %s, session %s)",
821 print_channel_name(channel_name
), session_name
);
824 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
826 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
827 ERR("Events: %s (channel %s, session %s)",
829 print_channel_name(channel_name
),
835 ERR("Events: %s (channel %s, session %s)",
837 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
838 ? print_raw_channel_name(channel_name
)
839 : print_channel_name(channel_name
),
847 switch (opt_event_type
) {
848 case LTTNG_EVENT_TRACEPOINT
:
849 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
850 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
852 if (!exclusion_string
) {
853 PERROR("Cannot allocate exclusion_string");
857 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
858 get_domain_str(dom
.type
),
860 print_channel_name(channel_name
),
862 free(exclusion_string
);
864 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
866 if (!exclusion_string
) {
867 PERROR("Cannot allocate exclusion_string");
871 MSG("All %s tracepoints%s are enabled in channel %s",
872 get_domain_str(dom
.type
),
874 print_channel_name(channel_name
));
875 free(exclusion_string
);
878 case LTTNG_EVENT_SYSCALL
:
880 MSG("All %s system calls are enabled in channel %s",
881 get_domain_str(dom
.type
),
882 print_channel_name(channel_name
));
885 case LTTNG_EVENT_ALL
:
886 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
887 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
889 if (!exclusion_string
) {
890 PERROR("Cannot allocate exclusion_string");
894 MSG("All %s events%s are enabled in channel %s for loglevel %s",
895 get_domain_str(dom
.type
),
897 print_channel_name(channel_name
),
899 free(exclusion_string
);
901 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
903 if (!exclusion_string
) {
904 PERROR("Cannot allocate exclusion_string");
908 MSG("All %s events%s are enabled in channel %s",
909 get_domain_str(dom
.type
),
911 print_channel_name(channel_name
));
912 free(exclusion_string
);
917 * We should not be here since lttng_enable_event should have
918 * failed on the event type.
925 command_ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
926 opt_filter
, exclusion_count
, exclusion_list
);
927 if (command_ret
< 0) {
928 switch (-command_ret
) {
929 case LTTNG_ERR_FILTER_EXIST
:
930 WARN("Filter on all events is already enabled"
931 " (channel %s, session %s)",
932 print_channel_name(channel_name
), session_name
);
935 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
937 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
938 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
940 print_channel_name(channel_name
),
941 session_name
, opt_filter
);
946 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
947 lttng_strerror(command_ret
),
948 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
949 ? print_raw_channel_name(channel_name
)
950 : print_channel_name(channel_name
),
951 session_name
, opt_filter
);
955 error_holder
= command_ret
;
958 MSG("Filter '%s' successfully set", opt_filter
);
963 /* The wildcard * is used for kernel and ust domain to
964 * represent ALL. We copy * in event name to force the wildcard use
967 * Note: this is strictly for semantic and printing while in
968 * machine interface mode.
970 strcpy(ev
.name
, "*");
972 /* If we reach here the events are enabled */
973 if (!error
&& !warn
) {
979 ret
= mi_lttng_event(writer
, &ev
, 1, handle
->domain
.type
);
985 /* print exclusion */
986 ret
= mi_print_exclusion(exclusion_count
, exclusion_list
);
993 ret
= mi_lttng_writer_write_element_bool(writer
,
994 mi_lttng_element_command_success
, success
);
1000 /* Close event element */
1001 ret
= mi_lttng_writer_close_element(writer
);
1011 /* Strip event list */
1012 event_name
= strtok(opt_event_list
, ",");
1013 while (event_name
!= NULL
) {
1014 /* Copy name and type of the event */
1015 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1016 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1017 ev
.type
= opt_event_type
;
1019 /* Kernel tracer action */
1021 DBG("Enabling kernel event %s for channel %s",
1023 print_channel_name(channel_name
));
1025 switch (opt_event_type
) {
1026 case LTTNG_EVENT_ALL
: /* Enable tracepoints and syscalls */
1027 /* If event name differs from *, select tracepoint. */
1028 if (strcmp(ev
.name
, "*")) {
1029 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1032 case LTTNG_EVENT_TRACEPOINT
:
1034 case LTTNG_EVENT_PROBE
:
1035 ret
= parse_probe_opts(&ev
, opt_probe
);
1037 ERR("Unable to parse probe options");
1042 case LTTNG_EVENT_FUNCTION
:
1043 ret
= parse_probe_opts(&ev
, opt_function
);
1045 ERR("Unable to parse function probe options");
1050 case LTTNG_EVENT_SYSCALL
:
1051 ev
.type
= LTTNG_EVENT_SYSCALL
;
1054 ret
= CMD_UNDEFINED
;
1058 /* kernel loglevels not implemented */
1059 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
1060 } else if (opt_userspace
) { /* User-space tracer action */
1061 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name
,
1062 print_channel_name(channel_name
), opt_loglevel
? : "<all>");
1064 switch (opt_event_type
) {
1065 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
1067 case LTTNG_EVENT_TRACEPOINT
:
1068 /* Copy name and type of the event */
1069 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1070 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1071 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1073 case LTTNG_EVENT_PROBE
:
1074 case LTTNG_EVENT_FUNCTION
:
1075 case LTTNG_EVENT_SYSCALL
:
1077 ERR("Event type not available for user-space tracing");
1078 ret
= CMD_UNSUPPORTED
;
1084 if (opt_event_type
!= LTTNG_EVENT_ALL
&& opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
1085 ERR("Exclusion option can only be used with tracepoint events");
1089 /* Free previously allocated items */
1090 if (exclusion_list
!= NULL
) {
1091 while (exclusion_count
--) {
1092 free(exclusion_list
[exclusion_count
]);
1094 free(exclusion_list
);
1095 exclusion_list
= NULL
;
1097 /* Check for proper subsets */
1098 ret
= check_exclusion_subsets(event_name
, opt_exclude
,
1099 &exclusion_count
, &exclusion_list
);
1100 if (ret
== CMD_ERROR
) {
1105 ev
.loglevel_type
= opt_loglevel_type
;
1107 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
1108 if (ev
.loglevel
== -1) {
1109 ERR("Unknown loglevel %s", opt_loglevel
);
1110 ret
= -LTTNG_ERR_INVALID
;
1116 } else if (opt_jul
|| opt_log4j
|| opt_python
) {
1117 if (opt_event_type
!= LTTNG_EVENT_ALL
&&
1118 opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
1119 ERR("Event type not supported for domain.");
1120 ret
= CMD_UNSUPPORTED
;
1124 ev
.loglevel_type
= opt_loglevel_type
;
1127 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
1128 } else if (opt_log4j
) {
1129 ev
.loglevel
= loglevel_log4j_str_to_value(opt_loglevel
);
1130 } else if (opt_python
) {
1131 ev
.loglevel
= loglevel_python_str_to_value(opt_loglevel
);
1133 if (ev
.loglevel
== -1) {
1134 ERR("Unknown loglevel %s", opt_loglevel
);
1135 ret
= -LTTNG_ERR_INVALID
;
1140 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
1141 } else if (opt_log4j
) {
1142 ev
.loglevel
= LTTNG_LOGLEVEL_LOG4J_ALL
;
1143 } else if (opt_python
) {
1144 ev
.loglevel
= LTTNG_LOGLEVEL_PYTHON_DEBUG
;
1147 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1148 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1149 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1155 char *exclusion_string
;
1157 command_ret
= lttng_enable_event_with_exclusions(handle
,
1159 NULL
, exclusion_count
, exclusion_list
);
1160 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
1161 if (!exclusion_string
) {
1162 PERROR("Cannot allocate exclusion_string");
1166 if (command_ret
< 0) {
1167 /* Turn ret to positive value to handle the positive error code */
1168 switch (-command_ret
) {
1169 case LTTNG_ERR_KERN_EVENT_EXIST
:
1170 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
1173 print_channel_name(channel_name
), session_name
);
1176 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
1178 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
1179 ERR("Event %s%s: %s (channel %s, session %s)", event_name
,
1182 print_channel_name(channel_name
),
1188 ERR("Event %s%s: %s (channel %s, session %s)", event_name
,
1190 lttng_strerror(command_ret
),
1191 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
1192 ? print_raw_channel_name(channel_name
)
1193 : print_channel_name(channel_name
),
1198 error_holder
= command_ret
;
1201 case LTTNG_DOMAIN_KERNEL
:
1202 case LTTNG_DOMAIN_UST
:
1203 MSG("%s event %s%s created in channel %s",
1204 get_domain_str(dom
.type
),
1207 print_channel_name(channel_name
));
1209 case LTTNG_DOMAIN_JUL
:
1210 case LTTNG_DOMAIN_LOG4J
:
1211 case LTTNG_DOMAIN_PYTHON
:
1213 * Don't print the default channel
1214 * name for agent domains.
1216 MSG("%s event %s%s enabled",
1217 get_domain_str(dom
.type
),
1225 free(exclusion_string
);
1229 char *exclusion_string
;
1231 /* Filter present */
1234 command_ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
1235 opt_filter
, exclusion_count
, exclusion_list
);
1236 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
1237 if (!exclusion_string
) {
1238 PERROR("Cannot allocate exclusion_string");
1242 if (command_ret
< 0) {
1243 switch (-command_ret
) {
1244 case LTTNG_ERR_FILTER_EXIST
:
1245 WARN("Filter on event %s%s is already enabled"
1246 " (channel %s, session %s)",
1249 print_channel_name(channel_name
), session_name
);
1252 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
1254 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
1255 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev
.name
,
1258 print_channel_name(channel_name
),
1259 session_name
, opt_filter
);
1264 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev
.name
,
1266 lttng_strerror(command_ret
),
1267 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
1268 ? print_raw_channel_name(channel_name
)
1269 : print_channel_name(channel_name
),
1270 session_name
, opt_filter
);
1274 error_holder
= command_ret
;
1277 MSG("Event %s%s: Filter '%s' successfully set",
1278 event_name
, exclusion_string
,
1281 free(exclusion_string
);
1292 ret
= mi_lttng_event(writer
, &ev
, 1, handle
->domain
.type
);
1298 /* print exclusion */
1299 ret
= mi_print_exclusion(exclusion_count
, exclusion_list
);
1306 ret
= mi_lttng_writer_write_element_bool(writer
,
1307 mi_lttng_element_command_success
, success
);
1313 /* Close event element */
1314 ret
= mi_lttng_writer_close_element(writer
);
1322 event_name
= strtok(NULL
, ",");
1323 /* Reset warn, error and success */
1330 /* Close events element */
1331 ret
= mi_lttng_writer_close_element(writer
);
1344 lttng_destroy_handle(handle
);
1346 if (exclusion_list
!= NULL
) {
1347 while (exclusion_count
--) {
1348 free(exclusion_list
[exclusion_count
]);
1350 free(exclusion_list
);
1353 /* Overwrite ret with error_holder if there was an actual error with
1354 * enabling an event.
1356 ret
= error_holder
? error_holder
: ret
;
1362 * Add event to trace session
1364 int cmd_enable_events(int argc
, const char **argv
)
1366 int opt
, ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
, success
= 1;
1367 static poptContext pc
;
1368 char *session_name
= NULL
;
1369 int event_type
= -1;
1371 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
1372 poptReadDefaultConfig(pc
, 0);
1374 /* Default event type */
1375 opt_event_type
= LTTNG_EVENT_ALL
;
1377 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1382 case OPT_TRACEPOINT
:
1383 opt_event_type
= LTTNG_EVENT_TRACEPOINT
;
1386 opt_event_type
= LTTNG_EVENT_PROBE
;
1389 opt_event_type
= LTTNG_EVENT_FUNCTION
;
1392 opt_event_type
= LTTNG_EVENT_SYSCALL
;
1398 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_RANGE
;
1399 opt_loglevel
= poptGetOptArg(pc
);
1401 case OPT_LOGLEVEL_ONLY
:
1402 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_SINGLE
;
1403 opt_loglevel
= poptGetOptArg(pc
);
1405 case OPT_LIST_OPTIONS
:
1406 list_cmd_options(stdout
, long_options
);
1414 ret
= CMD_UNDEFINED
;
1418 /* Validate event type. Multiple event type are not supported. */
1419 if (event_type
== -1) {
1420 event_type
= opt_event_type
;
1422 if (event_type
!= opt_event_type
) {
1423 ERR("Multiple event type not supported.");
1430 ret
= print_missing_or_multiple_domains(
1431 opt_kernel
+ opt_userspace
+ opt_jul
+ opt_log4j
+ opt_python
);
1439 writer
= mi_lttng_writer_create(fileno(stdout
), lttng_opt_mi
);
1441 ret
= -LTTNG_ERR_NOMEM
;
1445 /* Open command element */
1446 ret
= mi_lttng_writer_command_open(writer
,
1447 mi_lttng_element_command_enable_event
);
1453 /* Open output element */
1454 ret
= mi_lttng_writer_open_element(writer
,
1455 mi_lttng_element_command_output
);
1462 opt_event_list
= (char*) poptGetArg(pc
);
1463 if (opt_event_list
== NULL
&& opt_enable_all
== 0) {
1464 ERR("Missing event name(s).\n");
1470 if (!opt_session_name
) {
1471 session_name
= get_session_name();
1472 if (session_name
== NULL
) {
1473 command_ret
= CMD_ERROR
;
1478 session_name
= opt_session_name
;
1481 command_ret
= enable_events(session_name
);
1490 /* Close output element */
1491 ret
= mi_lttng_writer_close_element(writer
);
1497 ret
= mi_lttng_writer_write_element_bool(writer
,
1498 mi_lttng_element_command_success
, success
);
1504 /* Command element close */
1505 ret
= mi_lttng_writer_command_close(writer
);
1514 if (writer
&& mi_lttng_writer_destroy(writer
)) {
1515 /* Preserve original error code */
1516 ret
= ret
? ret
: LTTNG_ERR_MI_IO_FAIL
;
1519 if (opt_session_name
== NULL
) {
1523 /* Overwrite ret if an error occurred in enable_events */
1524 ret
= command_ret
? command_ret
: ret
;
1526 poptFreeContext(pc
);