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Adding log4j agent support
[lttng-tools.git] / src / bin / lttng / commands / enable_events.c
CommitLineData
f3ed775e
DG		 1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
d14d33bf
AM		 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.
f3ed775e
DG		 7 *
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.
12 *
d14d33bf
AM		 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.
f3ed775e
DG		 16 */
17
18#define _GNU_SOURCE
b2064f54 19#include <assert.h>
f3ed775e
DG		 20#include <popt.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24#include <sys/stat.h>
25#include <sys/types.h>
26#include <unistd.h>
5a0de755 27#include <inttypes.h>
8f0d098b 28#include <ctype.h>
f3ed775e 29
42224349 30#include <src/common/sessiond-comm/sessiond-comm.h>
f3ed775e 31
89476427
JRJ		 32/* Mi dependancy */
33#include <common/mi-lttng.h>
34
35#include "../command.h"
36
8ab7c0d9
MD		 37#if (LTTNG_SYMBOL_NAME_LEN == 256)
38#define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255"
39#endif
40
f3ed775e
DG		 41static char *opt_event_list;
42static int opt_event_type;
0cda4f28
MD		 43static const char *opt_loglevel;
44static int opt_loglevel_type;
6181537c 45static int opt_kernel;
5440dc42 46static char *opt_session_name;
f3ed775e 47static int opt_userspace;
b9dfb167 48static int opt_jul;
5cdb6027 49static int opt_log4j;
f3ed775e 50static int opt_enable_all;
cf0e5467 51static char *opt_probe;
8f0d098b
MD		 52static char *opt_function;
53static char *opt_function_entry_symbol;
f3ed775e 54static char *opt_channel_name;
53a80697 55static char *opt_filter;
fac3366c 56static char *opt_exclude;
d78d6610
DG		 57#if 0
58/* Not implemented yet */
59static char *opt_cmd_name;
60static pid_t opt_pid;
61#endif
f3ed775e
DG		 62
63enum {
64 OPT_HELP = 1,
f3ed775e 65 OPT_TRACEPOINT,
cf0e5467 66 OPT_PROBE,
f3ed775e 67 OPT_FUNCTION,
8f0d098b 68 OPT_FUNCTION_ENTRY,
a54bd42d 69 OPT_SYSCALL,
eeac7d46 70 OPT_USERSPACE,
0cda4f28
MD		 71 OPT_LOGLEVEL,
72 OPT_LOGLEVEL_ONLY,
679b4943 73 OPT_LIST_OPTIONS,
53a80697 74 OPT_FILTER,
fac3366c 75 OPT_EXCLUDE,
f3ed775e
DG		 76};
77
cd80958d 78static struct lttng_handle *handle;
89476427 79static struct mi_writer *writer;
cd80958d 80
f3ed775e
DG		 81static struct poptOption long_options[] = {
82 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
83 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42 84 {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e14f64a8 85 {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0},
f3ed775e
DG		 86 {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
87 {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610 88 {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
b9dfb167 89 {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
5cdb6027 90 {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
f3ed775e 91 {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0},
7ebae521 92 {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0},
40e9d5d3 93 {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0},
b213d387
MD		 94#if 0
95 /*
96 * Currently removed from lttng kernel tracer. Removed from
97 * lttng UI to discourage its use.
98 */
40e9d5d3 99 {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0},
b213d387 100#endif
7ebae521 101 {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0},
0cda4f28
MD		 102 {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0},
103 {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0},
679b4943 104 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
53a80697 105 {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0},
fac3366c 106 {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0},
f3ed775e
DG		 107 {0, 0, 0, 0, 0, 0, 0}
108};
109
110/*
111 * usage
112 */
113static void usage(FILE *ofp)
114{
32a6298d 115 fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n");
f3ed775e 116 fprintf(ofp, "\n");
32a6298d 117 fprintf(ofp, "Options:\n");
f3ed775e 118 fprintf(ofp, " -h, --help Show this help\n");
679b4943 119 fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d
DG		 120 fprintf(ofp, " -s, --session NAME Apply to session name\n");
121 fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
e08bff8d 122 fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n");
f3ed775e 123 fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
27221701 124 fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
b9dfb167 125 fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
5cdb6027 126 fprintf(ofp, " -l, --log4j Apply for Java application using LOG4j\n");
f3ed775e
DG		 127 fprintf(ofp, "\n");
128 fprintf(ofp, "Event options:\n");
129 fprintf(ofp, " --tracepoint Tracepoint event (default)\n");
be49af1e
MD		 130 fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n");
131 fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n");
132 fprintf(ofp, " e.g.:\n");
133 fprintf(ofp, " \"*\"\n");
134 fprintf(ofp, " \"app_component:na*\"\n");
6a240cd9 135 fprintf(ofp, " --probe (addr | symbol | symbol+offset)\n");
cf0e5467
MD		 136 fprintf(ofp, " Dynamic probe.\n");
137 fprintf(ofp, " Addr and offset can be octal (0NNN...),\n");
138 fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
6a240cd9 139 fprintf(ofp, " --function (addr | symbol | symbol+offset)\n");
8f0d098b
MD		 140 fprintf(ofp, " Dynamic function entry/return probe.\n");
141 fprintf(ofp, " Addr and offset can be octal (0NNN...),\n");
142 fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n");
b213d387 143#if 0
8f0d098b
MD		 144 fprintf(ofp, " --function:entry symbol\n");
145 fprintf(ofp, " Function tracer event\n");
b213d387 146#endif
a54bd42d 147 fprintf(ofp, " --syscall System call event\n");
f3ed775e 148 fprintf(ofp, "\n");
300b8fd5 149 fprintf(ofp, " --loglevel name\n");
f9e8873b 150 fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel.\n");
5cdb6027 151 fprintf(ofp, " For JUL/LOG4j domain, see the table below for the range values.\n");
300b8fd5
MD		 152 fprintf(ofp, " --loglevel-only name\n");
153 fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n");
154 fprintf(ofp, "\n");
0c8477c8
MD		 155 fprintf(ofp, " The loglevel or loglevel-only options should be\n");
156 fprintf(ofp, " combined with a tracepoint name or tracepoint\n");
157 fprintf(ofp, " wildcard.\n");
158 fprintf(ofp, " Available loglevels:\n");
159 fprintf(ofp, " (higher value is more verbose)\n");
46839cc2
MD		 160 fprintf(ofp, " TRACE_EMERG = 0\n");
161 fprintf(ofp, " TRACE_ALERT = 1\n");
162 fprintf(ofp, " TRACE_CRIT = 2\n");
163 fprintf(ofp, " TRACE_ERR = 3\n");
164 fprintf(ofp, " TRACE_WARNING = 4\n");
165 fprintf(ofp, " TRACE_NOTICE = 5\n");
166 fprintf(ofp, " TRACE_INFO = 6\n");
167 fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n");
168 fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n");
169 fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n");
170 fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n");
171 fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n");
172 fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n");
173 fprintf(ofp, " TRACE_DEBUG_LINE = 13\n");
174 fprintf(ofp, " TRACE_DEBUG = 14\n");
175 fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n");
b2064f54
DG		 176 fprintf(ofp, "\n");
177 fprintf(ofp, " Available JUL domain loglevels:\n");
178 fprintf(ofp, " JUL_OFF = INT32_MAX\n");
179 fprintf(ofp, " JUL_SEVERE = %d\n", LTTNG_LOGLEVEL_JUL_SEVERE);
180 fprintf(ofp, " JUL_WARNING = %d\n", LTTNG_LOGLEVEL_JUL_WARNING);
181 fprintf(ofp, " JUL_INFO = %d\n", LTTNG_LOGLEVEL_JUL_INFO);
182 fprintf(ofp, " JUL_CONFIG = %d\n", LTTNG_LOGLEVEL_JUL_CONFIG);
183 fprintf(ofp, " JUL_FINE = %d\n", LTTNG_LOGLEVEL_JUL_FINE);
184 fprintf(ofp, " JUL_FINER = %d\n", LTTNG_LOGLEVEL_JUL_FINER);
185 fprintf(ofp, " JUL_FINEST = %d\n", LTTNG_LOGLEVEL_JUL_FINEST);
186 fprintf(ofp, " JUL_ALL = INT32_MIN\n");
187 fprintf(ofp, " (shortcuts such as \"severe\" are allowed)\n");
188 fprintf(ofp, "\n");
5cdb6027
DG		 189 fprintf(ofp, " Available LOG4j domain loglevels:\n");
190 fprintf(ofp, " LOG4J_OFF = INT32_MAX\n");
191 fprintf(ofp, " LOG4J_FATAL = %d\n", LTTNG_LOGLEVEL_LOG4J_FATAL);
192 fprintf(ofp, " LOG4J_ERROR = %d\n", LTTNG_LOGLEVEL_LOG4J_ERROR);
193 fprintf(ofp, " LOG4J_WARN = %d\n", LTTNG_LOGLEVEL_LOG4J_WARN);
194 fprintf(ofp, " LOG4J_INFO = %d\n", LTTNG_LOGLEVEL_LOG4J_INFO);
195 fprintf(ofp, " LOG4J_DEBUG = %d\n", LTTNG_LOGLEVEL_LOG4J_DEBUG);
196 fprintf(ofp, " LOG4J_TRACE = %d\n", LTTNG_LOGLEVEL_LOG4J_TRACE);
197 fprintf(ofp, " LOG4J_ALL = INT32_MIN\n");
198 fprintf(ofp, " (shortcuts such as \"severe\" are allowed)\n");
199 fprintf(ofp, "\n");
f2611ab0 200 fprintf(ofp, " -f, --filter \'expression\'\n");
ee8ccafa
MD		 201 fprintf(ofp, " Filter expression on event fields and context.\n");
202 fprintf(ofp, " Event recording depends on evaluation.\n");
919e300c
MD		 203 fprintf(ofp, " Only specify on first activation of\n");
204 fprintf(ofp, " a given event within a session.\n");
205 fprintf(ofp, " Filter only allowed when enabling\n");
206 fprintf(ofp, " events within a session before tracing\n");
9bd578f5
MD		 207 fprintf(ofp, " is started. If the filter fails to link\n");
208 fprintf(ofp, " with the event within the traced domain,\n");
209 fprintf(ofp, " the event will be discarded. Currently,\n");
210 fprintf(ofp, " filter is only implemented for the user-space\n");
211 fprintf(ofp, " tracer.\n");
212 fprintf(ofp, " Expression examples:.\n");
213 fprintf(ofp, " \n");
214 fprintf(ofp, " 'intfield > 500 && intfield < 503'\n");
6a240cd9 215 fprintf(ofp, " '(strfield == \"test\" || intfield != 10) && intfield > 33'\n");
9bd578f5
MD		 216 fprintf(ofp, " 'doublefield > 1.1 && intfield < 5.3'\n");
217 fprintf(ofp, " \n");
218 fprintf(ofp, " Wildcards are allowed at the end of strings:\n");
219 fprintf(ofp, " 'seqfield1 == \"te*\"'\n");
220 fprintf(ofp, " In string literals, the escape character is '\\'.\n");
221 fprintf(ofp, " Use '\\*' for the '*' character, and '\\\\' for\n");
ee8ccafa
MD		 222 fprintf(ofp, " the '\\' character. Wildcard match any sequence of,\n");
223 fprintf(ofp, " characters including an empty sub-string (match 0 or\n");
224 fprintf(ofp, " more characters).\n");
225 fprintf(ofp, "\n");
226 fprintf(ofp, " Context information can be used for filtering. The\n");
227 fprintf(ofp, " examples below show usage of context filtering on\n");
228 fprintf(ofp, " process name (with a wildcard), process ID range, and\n");
229 fprintf(ofp, " unique thread ID for filtering. The process and\n");
230 fprintf(ofp, " thread ID of running applications can be found under\n");
231 fprintf(ofp, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n");
232 fprintf(ofp, "\n");
233 fprintf(ofp, " '$ctx.procname == \"demo*\"'\n");
234 fprintf(ofp, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n");
235 fprintf(ofp, " '$ctx.vtid == 1234'\n");
c2063d0b
JI		 236 fprintf(ofp, " -x, --exclude LIST\n");
237 fprintf(ofp, " Add exclusions to UST tracepoints:\n");
238 fprintf(ofp, " Events that match any of the items\n");
239 fprintf(ofp, " in the comma-separated LIST are not\n");
240 fprintf(ofp, " enabled, even if they match a wildcard\n");
241 fprintf(ofp, " definition of the event.\n");
300b8fd5 242 fprintf(ofp, "\n");
f3ed775e
DG		 243}
244
0d63dd19 245/*
6181537c 246 * Parse probe options.
0d63dd19 247 */
cf0e5467 248static int parse_probe_opts(struct lttng_event *ev, char *opt)
0d63dd19
DG		 249{
250 int ret;
8ff0bbd0 251 char s_hex[19];
8ab7c0d9 252#define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */
0d63dd19
DG		 253 char name[LTTNG_SYMBOL_NAME_LEN];
254
255 if (opt == NULL) {
256 ret = -1;
8f0d098b 257 goto end;
0d63dd19
DG		 258 }
259
260 /* Check for symbol+offset */
8ab7c0d9
MD		 261 ret = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API
262 "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex);
0d63dd19 263 if (ret == 2) {
7d29a247 264 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 265 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
cf0e5467 266 DBG("probe symbol %s", ev->attr.probe.symbol_name);
9d035200 267 if (*s_hex == '\0') {
8ff0bbd0 268 ERR("Invalid probe offset %s", s_hex);
0d63dd19 269 ret = -1;
8f0d098b 270 goto end;
0d63dd19 271 }
8ff0bbd0 272 ev->attr.probe.offset = strtoul(s_hex, NULL, 0);
cf0e5467 273 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
3000dc78 274 ev->attr.probe.addr = 0;
8f0d098b
MD		 275 goto end;
276 }
277
278 /* Check for symbol */
279 if (isalpha(name[0])) {
8ab7c0d9
MD		 280 ret = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s",
281 name);
8f0d098b
MD		 282 if (ret == 1) {
283 strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN);
99497cd0 284 ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
8f0d098b
MD		 285 DBG("probe symbol %s", ev->attr.probe.symbol_name);
286 ev->attr.probe.offset = 0;
287 DBG("probe offset %" PRIu64, ev->attr.probe.offset);
288 ev->attr.probe.addr = 0;
289 goto end;
290 }
0d63dd19
DG		 291 }
292
293 /* Check for address */
8ab7c0d9 294 ret = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex);
0d63dd19 295 if (ret > 0) {
9d035200 296 if (*s_hex == '\0') {
8ff0bbd0 297 ERR("Invalid probe address %s", s_hex);
0d63dd19 298 ret = -1;
8f0d098b 299 goto end;
0d63dd19 300 }
8ff0bbd0 301 ev->attr.probe.addr = strtoul(s_hex, NULL, 0);
cf0e5467 302 DBG("probe addr %" PRIu64, ev->attr.probe.addr);
3000dc78
DG		 303 ev->attr.probe.offset = 0;
304 memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN);
8f0d098b 305 goto end;
0d63dd19
DG		 306 }
307
308 /* No match */
309 ret = -1;
310
8f0d098b 311end:
0d63dd19
DG		 312 return ret;
313}
314
5cdb6027
DG		 315/*
316 * Maps LOG4j loglevel from string to value
317 */
318static int loglevel_log4j_str_to_value(const char *inputstr)
319{
320 int i = 0;
321 char str[LTTNG_SYMBOL_NAME_LEN];
322
323 /*
324 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
325 * added at the end of the loop so a the upper bound we avoid the overflow.
326 */
327 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
328 str[i] = toupper(inputstr[i]);
329 i++;
330 }
331 str[i] = '\0';
332
333 if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) {
334 return LTTNG_LOGLEVEL_LOG4J_OFF;
335 } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) {
336 return LTTNG_LOGLEVEL_LOG4J_FATAL;
337 } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) {
338 return LTTNG_LOGLEVEL_LOG4J_ERROR;
339 } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) {
340 return LTTNG_LOGLEVEL_LOG4J_WARN;
341 } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) {
342 return LTTNG_LOGLEVEL_LOG4J_INFO;
343 } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) {
344 return LTTNG_LOGLEVEL_LOG4J_DEBUG;
345 } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) {
346 return LTTNG_LOGLEVEL_LOG4J_TRACE;
347 } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) {
348 return LTTNG_LOGLEVEL_LOG4J_ALL;
349 } else {
350 return -1;
351 }
352}
353
b2064f54
DG		 354/*
355 * Maps JUL loglevel from string to value
356 */
357static int loglevel_jul_str_to_value(const char *inputstr)
358{
359 int i = 0;
360 char str[LTTNG_SYMBOL_NAME_LEN];
361
362 /*
363 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
364 * added at the end of the loop so a the upper bound we avoid the overflow.
365 */
366 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
367 str[i] = toupper(inputstr[i]);
368 i++;
369 }
370 str[i] = '\0';
371
372 if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) {
373 return LTTNG_LOGLEVEL_JUL_OFF;
374 } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) {
375 return LTTNG_LOGLEVEL_JUL_SEVERE;
376 } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) {
377 return LTTNG_LOGLEVEL_JUL_WARNING;
378 } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) {
379 return LTTNG_LOGLEVEL_JUL_INFO;
380 } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) {
381 return LTTNG_LOGLEVEL_JUL_CONFIG;
382 } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) {
383 return LTTNG_LOGLEVEL_JUL_FINE;
384 } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) {
385 return LTTNG_LOGLEVEL_JUL_FINER;
386 } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) {
387 return LTTNG_LOGLEVEL_JUL_FINEST;
388 } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) {
389 return LTTNG_LOGLEVEL_JUL_ALL;
390 } else {
391 return -1;
392 }
393}
394
8005f29a 395/*
0c8477c8 396 * Maps loglevel from string to value
8005f29a
MD		 397 */
398static
46839cc2 399int loglevel_str_to_value(const char *inputstr)
8005f29a 400{
46839cc2
MD		 401 int i = 0;
402 char str[LTTNG_SYMBOL_NAME_LEN];
403
e051e07c
DG		 404 /*
405 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
406 * added at the end of the loop so a the upper bound we avoid the overflow.
407 */
408 while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
46839cc2
MD		 409 str[i] = toupper(inputstr[i]);
410 i++;
411 }
412 str[i] = '\0';
413 if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) {
414 return LTTNG_LOGLEVEL_EMERG;
415 } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) {
416 return LTTNG_LOGLEVEL_ALERT;
417 } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) {
418 return LTTNG_LOGLEVEL_CRIT;
419 } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) {
420 return LTTNG_LOGLEVEL_ERR;
421 } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) {
422 return LTTNG_LOGLEVEL_WARNING;
423 } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) {
424 return LTTNG_LOGLEVEL_NOTICE;
425 } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) {
426 return LTTNG_LOGLEVEL_INFO;
427 } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) {
428 return LTTNG_LOGLEVEL_DEBUG_SYSTEM;
429 } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) {
430 return LTTNG_LOGLEVEL_DEBUG_PROGRAM;
431 } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) {
432 return LTTNG_LOGLEVEL_DEBUG_PROCESS;
433 } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) {
434 return LTTNG_LOGLEVEL_DEBUG_MODULE;
435 } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) {
436 return LTTNG_LOGLEVEL_DEBUG_UNIT;
437 } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) {
438 return LTTNG_LOGLEVEL_DEBUG_FUNCTION;
439 } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) {
440 return LTTNG_LOGLEVEL_DEBUG_LINE;
441 } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) {
442 return LTTNG_LOGLEVEL_DEBUG;
8005f29a
MD		 443 } else {
444 return -1;
445 }
446}
447
85076754
MD		 448static
449const char *print_channel_name(const char *name)
450{
451 return name ? : DEFAULT_CHANNEL_NAME;
452}
453
454static
455const char *print_raw_channel_name(const char *name)
456{
457 return name ? : "<default>";
458}
459
89476427
JRJ		 460/*
461 * Mi print exlcusion list
462 */
463static
464int mi_print_exclusion(int count, char **names)
465{
466 int i, ret;
467
468 assert(writer);
469
470 if (count == 0) {
471 ret = 0;
472 goto end;
473 }
474 ret = mi_lttng_writer_open_element(writer, config_element_exclusions);
475 if (ret) {
476 goto end;
477 }
478
479 for (i = 0; i < count; i++) {
480 ret = mi_lttng_writer_write_element_string(writer,
481 config_element_exclusion, names[i]);
482 if (ret) {
483 goto end;
484 }
485 }
486
487 /* Close exclusions element */
488 ret = mi_lttng_writer_close_element(writer);
489
490end:
491 return ret;
492}
493
9c48cab3
JI		 494/*
495 * Return allocated string for pretty-printing exclusion names.
496 */
497static
498char *print_exclusions(int count, char **names)
499{
500 int length = 0;
501 int i;
502 const char *preamble = " excluding ";
503 char *ret;
504
505 if (count == 0) {
506 return strdup("");
507 }
508
509 /* calculate total required length */
510 for (i = 0; i < count; i++) {
511 length += strlen(names[i]) + 1;
512 }
513
514 /* add length of preamble + one for NUL - one for last (missing) comma */
515 length += strlen(preamble);
516 ret = malloc(length);
517 strncpy(ret, preamble, length);
518 for (i = 0; i < count; i++) {
519 strcat(ret, names[i]);
520 if (i != count - 1) {
521 strcat(ret, ",");
522 }
523 }
89476427 524
9c48cab3
JI		 525 return ret;
526}
527
748bde76
JI		 528/*
529 * Compare list of exclusions against an event name.
530 * Return a list of legal exclusion names.
531 * Produce an error or a warning about others (depending on the situation)
532 */
533static
534int check_exclusion_subsets(const char *event_name,
535 const char *exclusions,
536 int *exclusion_count_ptr,
537 char ***exclusion_list_ptr)
538{
539 const char *excluder_ptr;
540 const char *event_ptr;
541 const char *next_excluder;
542 int excluder_length;
543 int exclusion_count = 0;
544 char **exclusion_list = NULL;
545 int ret = CMD_SUCCESS;
546
547 if (event_name[strlen(event_name) - 1] != '*') {
548 ERR("Event %s: Excluders can only be used with wildcarded events", event_name);
549 goto error;
550 }
551
552 next_excluder = exclusions;
553 while (*next_excluder != 0) {
554 event_ptr = event_name;
555 excluder_ptr = next_excluder;
556 excluder_length = strcspn(next_excluder, ",");
557
558 /* Scan both the excluder and the event letter by letter */
559 while (1) {
560 char e, x;
561
562 e = *event_ptr;
563 x = *excluder_ptr;
564
565 if (x == '*') {
566 /* Event is a subset of the excluder */
567 ERR("Event %s: %.*s excludes all events from %s",
568 event_name,
569 excluder_length,
570 next_excluder,
571 event_name);
572 goto error;
573 }
574 if (e == '*') {
575 /* Excluder is a proper subset of event */
576 exclusion_count++;
577 exclusion_list = realloc(exclusion_list, sizeof(char **) * exclusion_count);
578 exclusion_list[exclusion_count - 1] = strndup(next_excluder, excluder_length);
579
580 break;
581 }
582 if (x != e) {
583 /* Excluder and event sets have no common elements */
584 WARN("Event %s: %.*s does not exclude any events from %s",
585 event_name,
586 excluder_length,
587 next_excluder,
588 event_name);
589 break;
590 }
591 excluder_ptr++;
592 event_ptr++;
593 }
594 /* next excluder */
595 next_excluder += excluder_length;
596 if (*next_excluder == ',') {
597 next_excluder++;
598 }
599 }
600 goto end;
601error:
602 while (exclusion_count--) {
603 free(exclusion_list[exclusion_count]);
604 }
605 if (exclusion_list != NULL) {
606 free(exclusion_list);
607 }
608 exclusion_list = NULL;
609 exclusion_count = 0;
610 ret = CMD_ERROR;
611end:
612 *exclusion_count_ptr = exclusion_count;
613 *exclusion_list_ptr = exclusion_list;
614 return ret;
615}
f3ed775e 616/*
6181537c 617 * Enabling event using the lttng API.
89476427 618 * Note: in case of error only the last error code will be return.
f3ed775e 619 */
cd80958d 620static int enable_events(char *session_name)
f3ed775e 621{
89476427
JRJ		 622 int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
623 int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1;
b73d0b29 624 char *event_name, *channel_name = NULL;
f3ed775e 625 struct lttng_event ev;
7d29a247 626 struct lttng_domain dom;
7ed70bc9
JI		 627 int exclusion_count = 0;
628 char **exclusion_list = NULL;
f3ed775e 629
441c16a7
MD		 630 memset(&ev, 0, sizeof(ev));
631 memset(&dom, 0, sizeof(dom));
632
53a80697
MD		 633 if (opt_kernel) {
634 if (opt_filter) {
635 ERR("Filter not implement for kernel tracing yet");
636 ret = CMD_ERROR;
637 goto error;
638 }
67b58630
JG		 639 if (opt_loglevel) {
640 WARN("Kernel loglevels are not supported.");
641 }
53a80697
MD		 642 }
643
7d29a247
DG		 644 /* Create lttng domain */
645 if (opt_kernel) {
646 dom.type = LTTNG_DOMAIN_KERNEL;
7972aab2 647 dom.buf_type = LTTNG_BUFFER_GLOBAL;
d78d6610 648 } else if (opt_userspace) {
2bdd86d4 649 dom.type = LTTNG_DOMAIN_UST;
7972aab2 650 /* Default. */
8692d4e5 651 dom.buf_type = LTTNG_BUFFER_PER_UID;
b9dfb167
DG		 652 } else if (opt_jul) {
653 dom.type = LTTNG_DOMAIN_JUL;
654 /* Default. */
655 dom.buf_type = LTTNG_BUFFER_PER_UID;
5cdb6027
DG		 656 } else if (opt_log4j) {
657 dom.type = LTTNG_DOMAIN_LOG4J;
658 /* Default. */
659 dom.buf_type = LTTNG_BUFFER_PER_UID;
6181537c 660 } else {
b9dfb167 661 print_missing_domain();
d16c1a4c 662 ret = CMD_ERROR;
6181537c 663 goto error;
2bdd86d4 664 }
7d29a247 665
d5dd17fd
JI		 666 if (opt_kernel && opt_exclude) {
667 ERR("Event name exclusions are not yet implemented for kernel events");
668 ret = CMD_ERROR;
669 goto error;
670 }
671
85076754 672 channel_name = opt_channel_name;
ae856491 673
cd80958d
DG		 674 handle = lttng_create_handle(session_name, &dom);
675 if (handle == NULL) {
676 ret = -1;
677 goto error;
678 }
1aef21b6 679
89476427
JRJ		 680 /* Prepare Mi */
681 if (lttng_opt_mi) {
682 /* Open a events element */
683 ret = mi_lttng_writer_open_element(writer, config_element_events);
684 if (ret) {
685 ret = CMD_ERROR;
686 goto error;
687 }
688 }
689
cd80958d 690 if (opt_enable_all) {
8c9ae521 691 /* Default setup for enable all */
75e8c5ab
MD		 692 if (opt_kernel) {
693 ev.type = opt_event_type;
694 ev.name[0] = '\0';
300b8fd5
MD		 695 /* kernel loglevels not implemented */
696 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
75e8c5ab
MD		 697 } else {
698 ev.type = LTTNG_EVENT_TRACEPOINT;
699 strcpy(ev.name, "*");
300b8fd5
MD		 700 ev.loglevel_type = opt_loglevel_type;
701 if (opt_loglevel) {
5cdb6027 702 assert(opt_userspace || opt_jul || opt_log4j);
b2064f54
DG		 703 if (opt_userspace) {
704 ev.loglevel = loglevel_str_to_value(opt_loglevel);
705 } else if (opt_jul) {
706 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
5cdb6027
DG		 707 } else if (opt_log4j) {
708 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
b2064f54 709 }
300b8fd5
MD		 710 if (ev.loglevel == -1) {
711 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 712 ret = -LTTNG_ERR_INVALID;
300b8fd5
MD		 713 goto error;
714 }
22e25b71 715 } else {
5cdb6027 716 assert(opt_userspace || opt_jul || opt_log4j);
b2064f54
DG		 717 if (opt_userspace) {
718 ev.loglevel = -1;
5cdb6027 719 } else if (opt_jul || opt_log4j) {
b2064f54
DG		 720 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
721 }
300b8fd5 722 }
75e8c5ab 723 }
8c9ae521 724
7ed70bc9
JI		 725 if (opt_exclude) {
726 ret = check_exclusion_subsets("*", opt_exclude,
727 &exclusion_count, &exclusion_list);
728 if (ret == CMD_ERROR) {
729 goto error;
730 }
89476427 731 ev.exclusion = 1;
7ed70bc9 732 }
025faf73 733 if (!opt_filter) {
7ed70bc9
JI		 734 ret = lttng_enable_event_with_exclusions(handle,
735 &ev, channel_name,
736 NULL,
737 exclusion_count, exclusion_list);
025faf73
DG		 738 if (ret < 0) {
739 switch (-ret) {
740 case LTTNG_ERR_KERN_EVENT_EXIST:
741 WARN("Kernel events already enabled (channel %s, session %s)",
85076754 742 print_channel_name(channel_name), session_name);
89476427 743 warn = 1;
025faf73
DG		 744 break;
745 default:
746 ERR("Events: %s (channel %s, session %s)",
85076754
MD		 747 lttng_strerror(ret),
748 ret == -LTTNG_ERR_NEED_CHANNEL_NAME
749 ? print_raw_channel_name(channel_name)
750 : print_channel_name(channel_name),
751 session_name);
89476427 752 error = 1;
025faf73
DG		 753 break;
754 }
755 goto end;
42224349 756 }
8c9ae521 757
025faf73
DG		 758 switch (opt_event_type) {
759 case LTTNG_EVENT_TRACEPOINT:
67b58630 760 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9c48cab3
JI		 761 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
762 MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s",
b9dfb167 763 get_domain_str(dom.type),
9c48cab3 764 exclusion_string,
85076754 765 print_channel_name(channel_name),
025faf73 766 opt_loglevel);
9c48cab3 767 free(exclusion_string);
025faf73 768 } else {
9c48cab3
JI		 769 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
770 MSG("All %s tracepoints%s are enabled in channel %s",
b9dfb167 771 get_domain_str(dom.type),
9c48cab3 772 exclusion_string,
85076754 773 print_channel_name(channel_name));
9c48cab3 774 free(exclusion_string);
025faf73
DG		 775 }
776 break;
777 case LTTNG_EVENT_SYSCALL:
778 if (opt_kernel) {
779 MSG("All kernel system calls are enabled in channel %s",
85076754 780 print_channel_name(channel_name));
025faf73
DG		 781 }
782 break;
783 case LTTNG_EVENT_ALL:
67b58630 784 if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
9c48cab3
JI		 785 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
786 MSG("All %s events%s are enabled in channel %s for loglevel %s",
b9dfb167 787 get_domain_str(dom.type),
9c48cab3 788 exclusion_string,
85076754 789 print_channel_name(channel_name),
025faf73 790 opt_loglevel);
9c48cab3 791 free(exclusion_string);
025faf73 792 } else {
9c48cab3
JI		 793 char *exclusion_string = print_exclusions(exclusion_count, exclusion_list);
794 MSG("All %s events%s are enabled in channel %s",
b9dfb167 795 get_domain_str(dom.type),
9c48cab3 796 exclusion_string,
85076754 797 print_channel_name(channel_name));
9c48cab3 798 free(exclusion_string);
025faf73
DG		 799 }
800 break;
801 default:
802 /*
803 * We should not be here since lttng_enable_event should have
804 * failed on the event type.
805 */
806 goto error;
57064ada 807 }
f3ed775e 808 }
89476427 809
025faf73 810 if (opt_filter) {
89476427 811 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
7ed70bc9 812 opt_filter, exclusion_count, exclusion_list);
89476427
JRJ		 813 if (command_ret < 0) {
814 switch (-command_ret) {
16363652 815 case LTTNG_ERR_FILTER_EXIST:
85076754 816 WARN("Filter on all events is already enabled"
16363652 817 " (channel %s, session %s)",
85076754 818 print_channel_name(channel_name), session_name);
89476427 819 warn = 1;
16363652
DG		 820 break;
821 default:
85076754 822 ERR("All events: %s (channel %s, session %s, filter \'%s\')",
da3d7d0e
JRJ		 823 lttng_strerror(command_ret),
824 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 825 ? print_raw_channel_name(channel_name)
826 : print_channel_name(channel_name),
827 session_name, opt_filter);
89476427 828 error = 1;
16363652
DG		 829 break;
830 }
89476427 831 error_holder = command_ret;
16363652 832 } else {
89476427 833 ev.filter = 1;
16363652
DG		 834 MSG("Filter '%s' successfully set", opt_filter);
835 }
836 }
89476427
JRJ		 837
838 if (lttng_opt_mi) {
839 /* The wildcard * is used for kernel and ust domain to
840 * represent ALL. We copy * in event name to force the wildcard use
841 * for kernel domain
842 *
843 * Note: this is strictly for semantic and printing while in
844 * machine interface mode.
845 */
846 strcpy(ev.name, "*");
847
848 /* If we reach here the events are enabled */
849 if (!error && !warn) {
850 ev.enabled = 1;
851 } else {
852 ev.enabled = 0;
853 success = 0;
854 }
855 ret = mi_lttng_event(writer, &ev, 1);
856 if (ret) {
857 ret = CMD_ERROR;
858 goto error;
859 }
860
861 /* print exclusion */
862 ret = mi_print_exclusion(exclusion_count, exclusion_list);
863 if (ret) {
864 ret = CMD_ERROR;
865 goto error;
866 }
867
868 /* Success ? */
869 ret = mi_lttng_writer_write_element_bool(writer,
870 mi_lttng_element_command_success, success);
871 if (ret) {
872 ret = CMD_ERROR;
873 goto error;
874 }
875
876 /* Close event element */
877 ret = mi_lttng_writer_close_element(writer);
878 if (ret) {
879 ret = CMD_ERROR;
880 goto error;
881 }
882 }
883
8c9ae521 884 goto end;
f3ed775e
DG		 885 }
886
887 /* Strip event list */
888 event_name = strtok(opt_event_list, ",");
889 while (event_name != NULL) {
6181537c
DG		 890 /* Copy name and type of the event */
891 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
892 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
893 ev.type = opt_event_type;
894
f3ed775e
DG		 895 /* Kernel tracer action */
896 if (opt_kernel) {
897 DBG("Enabling kernel event %s for channel %s",
85076754
MD		 898 event_name,
899 print_channel_name(channel_name));
f3ed775e
DG		 900
901 switch (opt_event_type) {
7a3d1328
MD		 902 case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */
903 ev.type = LTTNG_EVENT_TRACEPOINT;
904 /* Fall-through */
e6ddca71 905 case LTTNG_EVENT_TRACEPOINT:
f3ed775e 906 break;
7d29a247 907 case LTTNG_EVENT_PROBE:
cf0e5467 908 ret = parse_probe_opts(&ev, opt_probe);
0d63dd19 909 if (ret < 0) {
cf0e5467 910 ERR("Unable to parse probe options");
0d63dd19
DG		 911 ret = 0;
912 goto error;
913 }
f3ed775e
DG		 914 break;
915 case LTTNG_EVENT_FUNCTION:
8f0d098b
MD		 916 ret = parse_probe_opts(&ev, opt_function);
917 if (ret < 0) {
918 ERR("Unable to parse function probe options");
919 ret = 0;
920 goto error;
921 }
922 break;
923 case LTTNG_EVENT_FUNCTION_ENTRY:
6181537c
DG		 924 strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol,
925 LTTNG_SYMBOL_NAME_LEN);
99497cd0 926 ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
f3ed775e 927 break;
a54bd42d 928 case LTTNG_EVENT_SYSCALL:
6181537c
DG		 929 MSG("per-syscall selection not supported yet. Use \"-a\" "
930 "for all syscalls.");
f3ed775e 931 default:
1ab1ea0b 932 ret = CMD_UNDEFINED;
f3ed775e
DG		 933 goto error;
934 }
0cda4f28 935
0cda4f28 936 /* kernel loglevels not implemented */
8005f29a 937 ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
f3ed775e 938 } else if (opt_userspace) { /* User-space tracer action */
d78d6610 939#if 0
e14f64a8
DG		 940 if (opt_cmd_name != NULL || opt_pid) {
941 MSG("Only supporting tracing all UST processes (-u) for now.");
1ab1ea0b 942 ret = CMD_UNDEFINED;
2bdd86d4
MD		 943 goto error;
944 }
d78d6610 945#endif
6181537c 946
300b8fd5 947 DBG("Enabling UST event %s for channel %s, loglevel %s", event_name,
85076754 948 print_channel_name(channel_name), opt_loglevel ? : "<all>");
2bdd86d4
MD		 949
950 switch (opt_event_type) {
951 case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */
2bdd86d4
MD		 952 /* Fall-through */
953 case LTTNG_EVENT_TRACEPOINT:
e4baff1e
MD		 954 /* Copy name and type of the event */
955 ev.type = LTTNG_EVENT_TRACEPOINT;
956 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
957 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
2bdd86d4
MD		 958 break;
959 case LTTNG_EVENT_PROBE:
960 case LTTNG_EVENT_FUNCTION:
961 case LTTNG_EVENT_FUNCTION_ENTRY:
962 case LTTNG_EVENT_SYSCALL:
963 default:
cc62c0c0 964 ERR("Event type not available for user-space tracing");
4ce78777 965 ret = CMD_UNSUPPORTED;
2bdd86d4
MD		 966 goto error;
967 }
0cda4f28 968
7ed70bc9 969 if (opt_exclude) {
89476427 970 ev.exclusion = 1;
d5dd17fd
JI		 971 if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) {
972 ERR("Exclusion option can only be used with tracepoint events");
973 ret = CMD_ERROR;
974 goto error;
975 }
7ed70bc9
JI		 976 /* Free previously allocated items */
977 if (exclusion_list != NULL) {
978 while (exclusion_count--) {
979 free(exclusion_list[exclusion_count]);
980 }
981 free(exclusion_list);
982 exclusion_list = NULL;
983 }
984 /* Check for proper subsets */
985 ret = check_exclusion_subsets(event_name, opt_exclude,
986 &exclusion_count, &exclusion_list);
987 if (ret == CMD_ERROR) {
988 goto error;
989 }
990 }
991
0cda4f28 992 ev.loglevel_type = opt_loglevel_type;
ed7f4083 993 if (opt_loglevel) {
8005f29a
MD		 994 ev.loglevel = loglevel_str_to_value(opt_loglevel);
995 if (ev.loglevel == -1) {
996 ERR("Unknown loglevel %s", opt_loglevel);
2f70b271 997 ret = -LTTNG_ERR_INVALID;
8005f29a
MD		 998 goto error;
999 }
22e25b71
MD		 1000 } else {
1001 ev.loglevel = -1;
ed7f4083 1002 }
5cdb6027 1003 } else if (opt_jul || opt_log4j) {
b9dfb167
DG		 1004 if (opt_event_type != LTTNG_EVENT_ALL &&
1005 opt_event_type != LTTNG_EVENT_TRACEPOINT) {
5cdb6027 1006 ERR("Event type not supported for domain.");
b9dfb167
DG		 1007 ret = CMD_UNSUPPORTED;
1008 goto error;
1009 }
b2064f54
DG		 1010
1011 ev.loglevel_type = opt_loglevel_type;
1012 if (opt_loglevel) {
5cdb6027
DG		 1013 if (opt_jul) {
1014 ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
1015 } else if (opt_log4j) {
1016 ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
1017 }
b2064f54
DG		 1018 if (ev.loglevel == -1) {
1019 ERR("Unknown loglevel %s", opt_loglevel);
1020 ret = -LTTNG_ERR_INVALID;
1021 goto error;
1022 }
1023 } else {
5cdb6027
DG		 1024 if (opt_jul) {
1025 ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
1026 } else if (opt_log4j) {
1027 ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
1028 }
b2064f54 1029 }
b9dfb167
DG		 1030 ev.type = LTTNG_EVENT_TRACEPOINT;
1031 strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
1032 ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
f3ed775e 1033 } else {
b9dfb167 1034 print_missing_domain();
300b8fd5 1035 ret = CMD_ERROR;
f3ed775e
DG		 1036 goto error;
1037 }
1038
025faf73 1039 if (!opt_filter) {
9c48cab3
JI		 1040 char *exclusion_string;
1041
89476427 1042 command_ret = lttng_enable_event_with_exclusions(handle,
7ed70bc9
JI		 1043 &ev, channel_name,
1044 NULL, exclusion_count, exclusion_list);
9c48cab3 1045 exclusion_string = print_exclusions(exclusion_count, exclusion_list);
89476427 1046 if (command_ret < 0) {
025faf73 1047 /* Turn ret to positive value to handle the positive error code */
89476427 1048 switch (-command_ret) {
025faf73 1049 case LTTNG_ERR_KERN_EVENT_EXIST:
9c48cab3 1050 WARN("Kernel event %s%s already enabled (channel %s, session %s)",
85076754 1051 event_name,
9c48cab3 1052 exclusion_string,
85076754 1053 print_channel_name(channel_name), session_name);
89476427 1054 warn = 1;
025faf73
DG		 1055 break;
1056 default:
9c48cab3
JI		 1057 ERR("Event %s%s: %s (channel %s, session %s)", event_name,
1058 exclusion_string,
da3d7d0e
JRJ		 1059 lttng_strerror(command_ret),
1060 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1061 ? print_raw_channel_name(channel_name)
1062 : print_channel_name(channel_name),
1063 session_name);
89476427 1064 error = 1;
025faf73
DG		 1065 break;
1066 }
89476427 1067 error_holder = command_ret;
025faf73 1068 } else {
5cdb6027
DG		 1069 /* So we don't print the default channel name for agent domain. */
1070 if (dom.type == LTTNG_DOMAIN_JUL ||
1071 dom.type == LTTNG_DOMAIN_LOG4J) {
49ceaa70
DG		 1072 MSG("%s event %s%s enabled.",
1073 get_domain_str(dom.type), event_name,
1074 exclusion_string);
1075 } else {
1076 MSG("%s event %s%s created in channel %s",
1077 get_domain_str(dom.type), event_name,
1078 exclusion_string,
1079 print_channel_name(channel_name));
1080 }
42224349 1081 }
9c48cab3 1082 free(exclusion_string);
6181537c 1083 }
025faf73
DG		 1084
1085 if (opt_filter) {
9c48cab3
JI		 1086 char *exclusion_string;
1087
89476427
JRJ		 1088 /* Filter present */
1089 ev.filter = 1;
1090
1091 command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
7ed70bc9 1092 opt_filter, exclusion_count, exclusion_list);
9c48cab3
JI		 1093 exclusion_string = print_exclusions(exclusion_count, exclusion_list);
1094
89476427
JRJ		 1095 if (command_ret < 0) {
1096 switch (-command_ret) {
7671f53c 1097 case LTTNG_ERR_FILTER_EXIST:
9c48cab3 1098 WARN("Filter on event %s%s is already enabled"
7671f53c 1099 " (channel %s, session %s)",
85076754 1100 event_name,
9c48cab3 1101 exclusion_string,
85076754 1102 print_channel_name(channel_name), session_name);
89476427 1103 warn = 1;
7671f53c
CB		 1104 break;
1105 default:
9c48cab3
JI		 1106 ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name,
1107 exclusion_string,
da3d7d0e
JRJ		 1108 lttng_strerror(command_ret),
1109 command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
85076754
MD		 1110 ? print_raw_channel_name(channel_name)
1111 : print_channel_name(channel_name),
1112 session_name, opt_filter);
89476427 1113 error = 1;
7671f53c
CB		 1114 break;
1115 }
89476427
JRJ		 1116 error_holder = command_ret;
1117
16363652 1118 } else {
9c48cab3
JI		 1119 MSG("Event %s%s: Filter '%s' successfully set",
1120 event_name, exclusion_string,
1121 opt_filter);
53a80697 1122 }
9c48cab3 1123 free(exclusion_string);
53a80697 1124 }
6181537c 1125
89476427
JRJ		 1126 if (lttng_opt_mi) {
1127 if (command_ret) {
1128 success = 0;
1129 ev.enabled = 0;
1130 } else {
1131 ev.enabled = 1;
1132 }
1133
1134 ret = mi_lttng_event(writer, &ev, 1);
1135 if (ret) {
1136 ret = CMD_ERROR;
1137 goto error;
1138 }
1139
1140 /* print exclusion */
1141 ret = mi_print_exclusion(exclusion_count, exclusion_list);
1142 if (ret) {
1143 ret = CMD_ERROR;
1144 goto error;
1145 }
1146
1147 /* Success ? */
1148 ret = mi_lttng_writer_write_element_bool(writer,
1149 mi_lttng_element_command_success, success);
1150 if (ret) {
1151 ret = CMD_ERROR;
1152 goto end;
1153 }
1154
1155 /* Close event element */
1156 ret = mi_lttng_writer_close_element(writer);
1157 if (ret) {
1158 ret = CMD_ERROR;
1159 goto end;
1160 }
1161 }
1162
f3ed775e
DG		 1163 /* Next event */
1164 event_name = strtok(NULL, ",");
89476427
JRJ		 1165 /* Reset warn, error and success */
1166 success = 1;
f3ed775e
DG		 1167 }
1168
8c9ae521 1169end:
89476427
JRJ		 1170 /* Close Mi */
1171 if (lttng_opt_mi) {
1172 /* Close events element */
1173 ret = mi_lttng_writer_close_element(writer);
1174 if (ret) {
1175 ret = CMD_ERROR;
1176 goto error;
1177 }
1178 }
f3ed775e 1179error:
ae856491
DG		 1180 if (warn) {
1181 ret = CMD_WARNING;
1182 }
89476427
JRJ		 1183 if (error) {
1184 ret = CMD_ERROR;
1185 }
cd80958d
DG		 1186 lttng_destroy_handle(handle);
1187
7ed70bc9
JI		 1188 if (exclusion_list != NULL) {
1189 while (exclusion_count--) {
1190 free(exclusion_list[exclusion_count]);
1191 }
1192 free(exclusion_list);
1193 }
1194
89476427
JRJ		 1195 /* Overwrite ret with error_holder if there was an actual error with
1196 * enabling an event.
1197 */
1198 ret = error_holder ? error_holder : ret;
1199
f3ed775e
DG		 1200 return ret;
1201}
1202
1203/*
6181537c 1204 * Add event to trace session
f3ed775e
DG		 1205 */
1206int cmd_enable_events(int argc, const char **argv)
1207{
89476427 1208 int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
f3ed775e 1209 static poptContext pc;
cd80958d 1210 char *session_name = NULL;
de044b7a 1211 int event_type = -1;
f3ed775e
DG		 1212
1213 pc = poptGetContext(NULL, argc, argv, long_options, 0);
1214 poptReadDefaultConfig(pc, 0);
1215
1216 /* Default event type */
7a3d1328 1217 opt_event_type = LTTNG_EVENT_ALL;
f3ed775e
DG		 1218
1219 while ((opt = poptGetNextOpt(pc)) != -1) {
1220 switch (opt) {
1221 case OPT_HELP:
ca1c3607 1222 usage(stdout);
f3ed775e 1223 goto end;
f3ed775e 1224 case OPT_TRACEPOINT:
e6ddca71 1225 opt_event_type = LTTNG_EVENT_TRACEPOINT;
f3ed775e 1226 break;
cf0e5467 1227 case OPT_PROBE:
7d29a247 1228 opt_event_type = LTTNG_EVENT_PROBE;
f3ed775e
DG		 1229 break;
1230 case OPT_FUNCTION:
1231 opt_event_type = LTTNG_EVENT_FUNCTION;
8f0d098b
MD		 1232 break;
1233 case OPT_FUNCTION_ENTRY:
1234 opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY;
f3ed775e 1235 break;
a54bd42d
MD		 1236 case OPT_SYSCALL:
1237 opt_event_type = LTTNG_EVENT_SYSCALL;
0133c199 1238 break;
eeac7d46
MD		 1239 case OPT_USERSPACE:
1240 opt_userspace = 1;
eeac7d46 1241 break;
0cda4f28 1242 case OPT_LOGLEVEL:
8005f29a 1243 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE;
0cda4f28
MD		 1244 opt_loglevel = poptGetOptArg(pc);
1245 break;
1246 case OPT_LOGLEVEL_ONLY:
8005f29a 1247 opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE;
0cda4f28 1248 opt_loglevel = poptGetOptArg(pc);
13dce3b7 1249 break;
679b4943
SM		 1250 case OPT_LIST_OPTIONS:
1251 list_cmd_options(stdout, long_options);
679b4943 1252 goto end;
53a80697
MD		 1253 case OPT_FILTER:
1254 break;
fac3366c
JI		 1255 case OPT_EXCLUDE:
1256 break;
f3ed775e
DG		 1257 default:
1258 usage(stderr);
1259 ret = CMD_UNDEFINED;
1260 goto end;
1261 }
de044b7a
DG		 1262
1263 /* Validate event type. Multiple event type are not supported. */
1264 if (event_type == -1) {
1265 event_type = opt_event_type;
1266 } else {
1267 if (event_type != opt_event_type) {
1268 ERR("Multiple event type not supported.");
1269 ret = CMD_ERROR;
1270 goto end;
1271 }
1272 }
f3ed775e
DG		 1273 }
1274
89476427
JRJ		 1275 /* Mi check */
1276 if (lttng_opt_mi) {
1277 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
1278 if (!writer) {
1279 ret = -LTTNG_ERR_NOMEM;
1280 goto end;
1281 }
1282
1283 /* Open command element */
1284 ret = mi_lttng_writer_command_open(writer,
1285 mi_lttng_element_command_enable_event);
1286 if (ret) {
1287 ret = CMD_ERROR;
1288 goto end;
1289 }
1290
1291 /* Open output element */
1292 ret = mi_lttng_writer_open_element(writer,
1293 mi_lttng_element_command_output);
1294 if (ret) {
1295 ret = CMD_ERROR;
1296 goto end;
1297 }
1298 }
1299
f3ed775e
DG		 1300 opt_event_list = (char*) poptGetArg(pc);
1301 if (opt_event_list == NULL && opt_enable_all == 0) {
1302 ERR("Missing event name(s).\n");
1303 usage(stderr);
ca1c3607 1304 ret = CMD_ERROR;
f3ed775e
DG		 1305 goto end;
1306 }
1307
cd80958d
DG		 1308 if (!opt_session_name) {
1309 session_name = get_session_name();
1310 if (session_name == NULL) {
89476427
JRJ		 1311 command_ret = CMD_ERROR;
1312 success = 0;
1313 goto mi_closing;
cd80958d
DG		 1314 }
1315 } else {
1316 session_name = opt_session_name;
1317 }
1318
89476427
JRJ		 1319 command_ret = enable_events(session_name);
1320 if (command_ret) {
1321 success = 0;
1322 goto mi_closing;
1323 }
1324
1325mi_closing:
1326 /* Mi closing */
1327 if (lttng_opt_mi) {
1328 /* Close output element */
1329 ret = mi_lttng_writer_close_element(writer);
1330 if (ret) {
1331 ret = CMD_ERROR;
1332 goto end;
1333 }
1334
1335 ret = mi_lttng_writer_write_element_bool(writer,
1336 mi_lttng_element_command_success, success);
1337 if (ret) {
1338 ret = CMD_ERROR;
1339 goto end;
1340 }
1341
1342 /* Command element close */
1343 ret = mi_lttng_writer_command_close(writer);
1344 if (ret) {
1345 ret = CMD_ERROR;
1346 goto end;
1347 }
1348 }
f3ed775e
DG		 1349
1350end:
89476427
JRJ		 1351 /* Mi clean-up */
1352 if (writer && mi_lttng_writer_destroy(writer)) {
1353 /* Preserve original error code */
1354 ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
1355 }
1356
cd80958d
DG		 1357 if (opt_session_name == NULL) {
1358 free(session_name);
1359 }
1360
89476427
JRJ		 1361 /* Overwrite ret if an error occurred in enable_events */
1362 ret = command_ret ? command_ret : ret;
1363
ca1c3607 1364 poptFreeContext(pc);
f3ed775e
DG		 1365 return ret;
1366}
LTTng 2.0 tools and control repository
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