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 static void warn_on_truncated_exclusion_names(char **exclusion_list
,
681 int exclusion_count
, int *warn
)
685 for (i
= 0; i
< exclusion_count
; ++i
) {
686 const char *name
= exclusion_list
[i
];
687 size_t len
= strlen(name
);
689 if (len
>= LTTNG_SYMBOL_NAME_LEN
) {
690 WARN("Event exclusion \"%s\" will be truncated",
698 * Enabling event using the lttng API.
699 * Note: in case of error only the last error code will be return.
701 static int enable_events(char *session_name
)
703 int ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
;
704 int error_holder
= CMD_SUCCESS
, warn
= 0, error
= 0, success
= 1;
705 char *event_name
, *channel_name
= NULL
;
706 struct lttng_event ev
;
707 struct lttng_domain dom
;
708 int exclusion_count
= 0;
709 char **exclusion_list
= NULL
;
711 memset(&ev
, 0, sizeof(ev
));
712 memset(&dom
, 0, sizeof(dom
));
716 WARN("Kernel loglevels are not supported.");
720 /* Create lttng domain */
722 dom
.type
= LTTNG_DOMAIN_KERNEL
;
723 dom
.buf_type
= LTTNG_BUFFER_GLOBAL
;
724 } else if (opt_userspace
) {
725 dom
.type
= LTTNG_DOMAIN_UST
;
727 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
728 } else if (opt_jul
) {
729 dom
.type
= LTTNG_DOMAIN_JUL
;
731 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
732 } else if (opt_log4j
) {
733 dom
.type
= LTTNG_DOMAIN_LOG4J
;
735 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
736 } else if (opt_python
) {
737 dom
.type
= LTTNG_DOMAIN_PYTHON
;
739 dom
.buf_type
= LTTNG_BUFFER_PER_UID
;
741 /* Checked by the caller. */
747 case LTTNG_DOMAIN_KERNEL
:
748 case LTTNG_DOMAIN_JUL
:
749 case LTTNG_DOMAIN_LOG4J
:
750 case LTTNG_DOMAIN_PYTHON
:
751 ERR("Event name exclusions are not yet implemented for %s events",
752 get_domain_str(dom
.type
));
755 case LTTNG_DOMAIN_UST
:
756 /* Exclusions supported */
763 channel_name
= opt_channel_name
;
765 handle
= lttng_create_handle(session_name
, &dom
);
766 if (handle
== NULL
) {
773 /* Open a events element */
774 ret
= mi_lttng_writer_open_element(writer
, config_element_events
);
781 if (opt_enable_all
) {
782 /* Default setup for enable all */
784 ev
.type
= opt_event_type
;
785 strcpy(ev
.name
, "*");
786 /* kernel loglevels not implemented */
787 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
789 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
790 strcpy(ev
.name
, "*");
791 ev
.loglevel_type
= opt_loglevel_type
;
793 assert(opt_userspace
|| opt_jul
|| opt_log4j
|| opt_python
);
795 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
796 } else if (opt_jul
) {
797 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
798 } else if (opt_log4j
) {
799 ev
.loglevel
= loglevel_log4j_str_to_value(opt_loglevel
);
800 } else if (opt_python
) {
801 ev
.loglevel
= loglevel_python_str_to_value(opt_loglevel
);
803 if (ev
.loglevel
== -1) {
804 ERR("Unknown loglevel %s", opt_loglevel
);
805 ret
= -LTTNG_ERR_INVALID
;
809 assert(opt_userspace
|| opt_jul
|| opt_log4j
|| opt_python
);
812 } else if (opt_jul
) {
813 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
814 } else if (opt_log4j
) {
815 ev
.loglevel
= LTTNG_LOGLEVEL_LOG4J_ALL
;
816 } else if (opt_python
) {
817 ev
.loglevel
= LTTNG_LOGLEVEL_PYTHON_DEBUG
;
823 ret
= check_exclusion_subsets("*", opt_exclude
,
824 &exclusion_count
, &exclusion_list
);
825 if (ret
== CMD_ERROR
) {
830 warn_on_truncated_exclusion_names(exclusion_list
,
831 exclusion_count
, &warn
);
834 ret
= lttng_enable_event_with_exclusions(handle
,
837 exclusion_count
, exclusion_list
);
840 case LTTNG_ERR_KERN_EVENT_EXIST
:
841 WARN("Kernel events already enabled (channel %s, session %s)",
842 print_channel_name(channel_name
), session_name
);
845 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
847 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
848 ERR("Events: %s (channel %s, session %s)",
850 print_channel_name(channel_name
),
856 ERR("Events: %s (channel %s, session %s)",
858 ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
859 ? print_raw_channel_name(channel_name
)
860 : print_channel_name(channel_name
),
868 switch (opt_event_type
) {
869 case LTTNG_EVENT_TRACEPOINT
:
870 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
871 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
873 if (!exclusion_string
) {
874 PERROR("Cannot allocate exclusion_string");
878 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
879 get_domain_str(dom
.type
),
881 print_channel_name(channel_name
),
883 free(exclusion_string
);
885 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
887 if (!exclusion_string
) {
888 PERROR("Cannot allocate exclusion_string");
892 MSG("All %s tracepoints%s are enabled in channel %s",
893 get_domain_str(dom
.type
),
895 print_channel_name(channel_name
));
896 free(exclusion_string
);
899 case LTTNG_EVENT_SYSCALL
:
901 MSG("All %s system calls are enabled in channel %s",
902 get_domain_str(dom
.type
),
903 print_channel_name(channel_name
));
906 case LTTNG_EVENT_ALL
:
907 if (opt_loglevel
&& dom
.type
!= LTTNG_DOMAIN_KERNEL
) {
908 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
910 if (!exclusion_string
) {
911 PERROR("Cannot allocate exclusion_string");
915 MSG("All %s events%s are enabled in channel %s for loglevel %s",
916 get_domain_str(dom
.type
),
918 print_channel_name(channel_name
),
920 free(exclusion_string
);
922 char *exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
924 if (!exclusion_string
) {
925 PERROR("Cannot allocate exclusion_string");
929 MSG("All %s events%s are enabled in channel %s",
930 get_domain_str(dom
.type
),
932 print_channel_name(channel_name
));
933 free(exclusion_string
);
938 * We should not be here since lttng_enable_event should have
939 * failed on the event type.
946 command_ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
947 opt_filter
, exclusion_count
, exclusion_list
);
948 if (command_ret
< 0) {
949 switch (-command_ret
) {
950 case LTTNG_ERR_FILTER_EXIST
:
951 WARN("Filter on all events is already enabled"
952 " (channel %s, session %s)",
953 print_channel_name(channel_name
), session_name
);
956 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
958 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
959 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
961 print_channel_name(channel_name
),
962 session_name
, opt_filter
);
967 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
968 lttng_strerror(command_ret
),
969 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
970 ? print_raw_channel_name(channel_name
)
971 : print_channel_name(channel_name
),
972 session_name
, opt_filter
);
976 error_holder
= command_ret
;
979 MSG("Filter '%s' successfully set", opt_filter
);
984 /* The wildcard * is used for kernel and ust domain to
985 * represent ALL. We copy * in event name to force the wildcard use
988 * Note: this is strictly for semantic and printing while in
989 * machine interface mode.
991 strcpy(ev
.name
, "*");
993 /* If we reach here the events are enabled */
994 if (!error
&& !warn
) {
1000 ret
= mi_lttng_event(writer
, &ev
, 1, handle
->domain
.type
);
1006 /* print exclusion */
1007 ret
= mi_print_exclusion(exclusion_count
, exclusion_list
);
1014 ret
= mi_lttng_writer_write_element_bool(writer
,
1015 mi_lttng_element_command_success
, success
);
1021 /* Close event element */
1022 ret
= mi_lttng_writer_close_element(writer
);
1032 /* Strip event list */
1033 event_name
= strtok(opt_event_list
, ",");
1034 while (event_name
!= NULL
) {
1035 /* Copy name and type of the event */
1036 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1037 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1038 ev
.type
= opt_event_type
;
1040 /* Kernel tracer action */
1042 DBG("Enabling kernel event %s for channel %s",
1044 print_channel_name(channel_name
));
1046 switch (opt_event_type
) {
1047 case LTTNG_EVENT_ALL
: /* Enable tracepoints and syscalls */
1048 /* If event name differs from *, select tracepoint. */
1049 if (strcmp(ev
.name
, "*")) {
1050 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1053 case LTTNG_EVENT_TRACEPOINT
:
1055 case LTTNG_EVENT_PROBE
:
1056 ret
= parse_probe_opts(&ev
, opt_probe
);
1058 ERR("Unable to parse probe options");
1063 case LTTNG_EVENT_FUNCTION
:
1064 ret
= parse_probe_opts(&ev
, opt_function
);
1066 ERR("Unable to parse function probe options");
1071 case LTTNG_EVENT_SYSCALL
:
1072 ev
.type
= LTTNG_EVENT_SYSCALL
;
1075 ret
= CMD_UNDEFINED
;
1079 /* kernel loglevels not implemented */
1080 ev
.loglevel_type
= LTTNG_EVENT_LOGLEVEL_ALL
;
1081 } else if (opt_userspace
) { /* User-space tracer action */
1082 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name
,
1083 print_channel_name(channel_name
), opt_loglevel
? : "<all>");
1085 switch (opt_event_type
) {
1086 case LTTNG_EVENT_ALL
: /* Default behavior is tracepoint */
1088 case LTTNG_EVENT_TRACEPOINT
:
1089 /* Copy name and type of the event */
1090 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1091 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1092 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1094 case LTTNG_EVENT_PROBE
:
1095 case LTTNG_EVENT_FUNCTION
:
1096 case LTTNG_EVENT_SYSCALL
:
1098 ERR("Event type not available for user-space tracing");
1099 ret
= CMD_UNSUPPORTED
;
1105 if (opt_event_type
!= LTTNG_EVENT_ALL
&& opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
1106 ERR("Exclusion option can only be used with tracepoint events");
1110 /* Free previously allocated items */
1111 if (exclusion_list
!= NULL
) {
1112 while (exclusion_count
--) {
1113 free(exclusion_list
[exclusion_count
]);
1115 free(exclusion_list
);
1116 exclusion_list
= NULL
;
1118 /* Check for proper subsets */
1119 ret
= check_exclusion_subsets(event_name
, opt_exclude
,
1120 &exclusion_count
, &exclusion_list
);
1121 if (ret
== CMD_ERROR
) {
1125 warn_on_truncated_exclusion_names(
1126 exclusion_list
, exclusion_count
, &warn
);
1129 ev
.loglevel_type
= opt_loglevel_type
;
1131 ev
.loglevel
= loglevel_str_to_value(opt_loglevel
);
1132 if (ev
.loglevel
== -1) {
1133 ERR("Unknown loglevel %s", opt_loglevel
);
1134 ret
= -LTTNG_ERR_INVALID
;
1140 } else if (opt_jul
|| opt_log4j
|| opt_python
) {
1141 if (opt_event_type
!= LTTNG_EVENT_ALL
&&
1142 opt_event_type
!= LTTNG_EVENT_TRACEPOINT
) {
1143 ERR("Event type not supported for domain.");
1144 ret
= CMD_UNSUPPORTED
;
1148 ev
.loglevel_type
= opt_loglevel_type
;
1151 ev
.loglevel
= loglevel_jul_str_to_value(opt_loglevel
);
1152 } else if (opt_log4j
) {
1153 ev
.loglevel
= loglevel_log4j_str_to_value(opt_loglevel
);
1154 } else if (opt_python
) {
1155 ev
.loglevel
= loglevel_python_str_to_value(opt_loglevel
);
1157 if (ev
.loglevel
== -1) {
1158 ERR("Unknown loglevel %s", opt_loglevel
);
1159 ret
= -LTTNG_ERR_INVALID
;
1164 ev
.loglevel
= LTTNG_LOGLEVEL_JUL_ALL
;
1165 } else if (opt_log4j
) {
1166 ev
.loglevel
= LTTNG_LOGLEVEL_LOG4J_ALL
;
1167 } else if (opt_python
) {
1168 ev
.loglevel
= LTTNG_LOGLEVEL_PYTHON_DEBUG
;
1171 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
1172 strncpy(ev
.name
, event_name
, LTTNG_SYMBOL_NAME_LEN
);
1173 ev
.name
[LTTNG_SYMBOL_NAME_LEN
- 1] = '\0';
1179 char *exclusion_string
;
1181 command_ret
= lttng_enable_event_with_exclusions(handle
,
1183 NULL
, exclusion_count
, exclusion_list
);
1184 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
1185 if (!exclusion_string
) {
1186 PERROR("Cannot allocate exclusion_string");
1190 if (command_ret
< 0) {
1191 /* Turn ret to positive value to handle the positive error code */
1192 switch (-command_ret
) {
1193 case LTTNG_ERR_KERN_EVENT_EXIST
:
1194 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
1197 print_channel_name(channel_name
), session_name
);
1200 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
1202 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
1203 ERR("Event %s%s: %s (channel %s, session %s)", event_name
,
1206 print_channel_name(channel_name
),
1212 ERR("Event %s%s: %s (channel %s, session %s)", event_name
,
1214 lttng_strerror(command_ret
),
1215 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
1216 ? print_raw_channel_name(channel_name
)
1217 : print_channel_name(channel_name
),
1222 error_holder
= command_ret
;
1225 case LTTNG_DOMAIN_KERNEL
:
1226 case LTTNG_DOMAIN_UST
:
1227 MSG("%s event %s%s created in channel %s",
1228 get_domain_str(dom
.type
),
1231 print_channel_name(channel_name
));
1233 case LTTNG_DOMAIN_JUL
:
1234 case LTTNG_DOMAIN_LOG4J
:
1235 case LTTNG_DOMAIN_PYTHON
:
1237 * Don't print the default channel
1238 * name for agent domains.
1240 MSG("%s event %s%s enabled",
1241 get_domain_str(dom
.type
),
1249 free(exclusion_string
);
1253 char *exclusion_string
;
1255 /* Filter present */
1258 command_ret
= lttng_enable_event_with_exclusions(handle
, &ev
, channel_name
,
1259 opt_filter
, exclusion_count
, exclusion_list
);
1260 exclusion_string
= print_exclusions(exclusion_count
, exclusion_list
);
1261 if (!exclusion_string
) {
1262 PERROR("Cannot allocate exclusion_string");
1266 if (command_ret
< 0) {
1267 switch (-command_ret
) {
1268 case LTTNG_ERR_FILTER_EXIST
:
1269 WARN("Filter on event %s%s is already enabled"
1270 " (channel %s, session %s)",
1273 print_channel_name(channel_name
), session_name
);
1276 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
1278 const char *msg
= "The command tried to enable an event in a new domain for a session that has already been started once.";
1279 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev
.name
,
1282 print_channel_name(channel_name
),
1283 session_name
, opt_filter
);
1288 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev
.name
,
1290 lttng_strerror(command_ret
),
1291 command_ret
== -LTTNG_ERR_NEED_CHANNEL_NAME
1292 ? print_raw_channel_name(channel_name
)
1293 : print_channel_name(channel_name
),
1294 session_name
, opt_filter
);
1298 error_holder
= command_ret
;
1301 MSG("Event %s%s: Filter '%s' successfully set",
1302 event_name
, exclusion_string
,
1305 free(exclusion_string
);
1316 ret
= mi_lttng_event(writer
, &ev
, 1, handle
->domain
.type
);
1322 /* print exclusion */
1323 ret
= mi_print_exclusion(exclusion_count
, exclusion_list
);
1330 ret
= mi_lttng_writer_write_element_bool(writer
,
1331 mi_lttng_element_command_success
, success
);
1337 /* Close event element */
1338 ret
= mi_lttng_writer_close_element(writer
);
1346 event_name
= strtok(NULL
, ",");
1347 /* Reset warn, error and success */
1354 /* Close events element */
1355 ret
= mi_lttng_writer_close_element(writer
);
1368 lttng_destroy_handle(handle
);
1370 if (exclusion_list
!= NULL
) {
1371 while (exclusion_count
--) {
1372 free(exclusion_list
[exclusion_count
]);
1374 free(exclusion_list
);
1377 /* Overwrite ret with error_holder if there was an actual error with
1378 * enabling an event.
1380 ret
= error_holder
? error_holder
: ret
;
1386 * Add event to trace session
1388 int cmd_enable_events(int argc
, const char **argv
)
1390 int opt
, ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
, success
= 1;
1391 static poptContext pc
;
1392 char *session_name
= NULL
;
1393 int event_type
= -1;
1395 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
1396 poptReadDefaultConfig(pc
, 0);
1398 /* Default event type */
1399 opt_event_type
= LTTNG_EVENT_ALL
;
1401 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1406 case OPT_TRACEPOINT
:
1407 opt_event_type
= LTTNG_EVENT_TRACEPOINT
;
1410 opt_event_type
= LTTNG_EVENT_PROBE
;
1413 opt_event_type
= LTTNG_EVENT_FUNCTION
;
1416 opt_event_type
= LTTNG_EVENT_SYSCALL
;
1422 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_RANGE
;
1423 opt_loglevel
= poptGetOptArg(pc
);
1425 case OPT_LOGLEVEL_ONLY
:
1426 opt_loglevel_type
= LTTNG_EVENT_LOGLEVEL_SINGLE
;
1427 opt_loglevel
= poptGetOptArg(pc
);
1429 case OPT_LIST_OPTIONS
:
1430 list_cmd_options(stdout
, long_options
);
1438 ret
= CMD_UNDEFINED
;
1442 /* Validate event type. Multiple event type are not supported. */
1443 if (event_type
== -1) {
1444 event_type
= opt_event_type
;
1446 if (event_type
!= opt_event_type
) {
1447 ERR("Multiple event type not supported.");
1454 ret
= print_missing_or_multiple_domains(
1455 opt_kernel
+ opt_userspace
+ opt_jul
+ opt_log4j
+ opt_python
);
1463 writer
= mi_lttng_writer_create(fileno(stdout
), lttng_opt_mi
);
1465 ret
= -LTTNG_ERR_NOMEM
;
1469 /* Open command element */
1470 ret
= mi_lttng_writer_command_open(writer
,
1471 mi_lttng_element_command_enable_event
);
1477 /* Open output element */
1478 ret
= mi_lttng_writer_open_element(writer
,
1479 mi_lttng_element_command_output
);
1486 opt_event_list
= (char*) poptGetArg(pc
);
1487 if (opt_event_list
== NULL
&& opt_enable_all
== 0) {
1488 ERR("Missing event name(s).\n");
1494 if (!opt_session_name
) {
1495 session_name
= get_session_name();
1496 if (session_name
== NULL
) {
1497 command_ret
= CMD_ERROR
;
1502 session_name
= opt_session_name
;
1505 command_ret
= enable_events(session_name
);
1514 /* Close output element */
1515 ret
= mi_lttng_writer_close_element(writer
);
1521 ret
= mi_lttng_writer_write_element_bool(writer
,
1522 mi_lttng_element_command_success
, success
);
1528 /* Command element close */
1529 ret
= mi_lttng_writer_command_close(writer
);
1538 if (writer
&& mi_lttng_writer_destroy(writer
)) {
1539 /* Preserve original error code */
1540 ret
= ret
? ret
: LTTNG_ERR_MI_IO_FAIL
;
1543 if (opt_session_name
== NULL
) {
1547 /* Overwrite ret if an error occurred in enable_events */
1548 ret
= command_ret
? command_ret
: ret
;
1550 poptFreeContext(pc
);