| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
| 3 | * |
| 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. |
| 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 | * |
| 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. |
| 16 | */ |
| 17 | |
| 18 | #define _GNU_SOURCE |
| 19 | #include <assert.h> |
| 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> |
| 27 | #include <inttypes.h> |
| 28 | #include <ctype.h> |
| 29 | |
| 30 | #include "../command.h" |
| 31 | #include <src/common/sessiond-comm/sessiond-comm.h> |
| 32 | |
| 33 | static char *opt_event_list; |
| 34 | static int opt_event_type; |
| 35 | static const char *opt_loglevel; |
| 36 | static int opt_loglevel_type; |
| 37 | static int opt_kernel; |
| 38 | static char *opt_session_name; |
| 39 | static int opt_userspace; |
| 40 | static int opt_jul; |
| 41 | static int opt_enable_all; |
| 42 | static char *opt_probe; |
| 43 | static char *opt_function; |
| 44 | static char *opt_function_entry_symbol; |
| 45 | static char *opt_channel_name; |
| 46 | static char *opt_filter; |
| 47 | static char *opt_exclude; |
| 48 | #if 0 |
| 49 | /* Not implemented yet */ |
| 50 | static char *opt_cmd_name; |
| 51 | static pid_t opt_pid; |
| 52 | #endif |
| 53 | |
| 54 | enum { |
| 55 | OPT_HELP = 1, |
| 56 | OPT_TRACEPOINT, |
| 57 | OPT_PROBE, |
| 58 | OPT_FUNCTION, |
| 59 | OPT_FUNCTION_ENTRY, |
| 60 | OPT_SYSCALL, |
| 61 | OPT_USERSPACE, |
| 62 | OPT_LOGLEVEL, |
| 63 | OPT_LOGLEVEL_ONLY, |
| 64 | OPT_LIST_OPTIONS, |
| 65 | OPT_FILTER, |
| 66 | OPT_EXCLUDE, |
| 67 | }; |
| 68 | |
| 69 | static struct lttng_handle *handle; |
| 70 | |
| 71 | static struct poptOption long_options[] = { |
| 72 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
| 73 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, |
| 74 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
| 75 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
| 76 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
| 77 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
| 78 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
| 79 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
| 80 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
| 81 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
| 82 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
| 83 | #if 0 |
| 84 | /* |
| 85 | * Currently removed from lttng kernel tracer. Removed from |
| 86 | * lttng UI to discourage its use. |
| 87 | */ |
| 88 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
| 89 | #endif |
| 90 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
| 91 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
| 92 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, |
| 93 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
| 94 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
| 95 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
| 96 | {0, 0, 0, 0, 0, 0, 0} |
| 97 | }; |
| 98 | |
| 99 | /* |
| 100 | * usage |
| 101 | */ |
| 102 | static void usage(FILE *ofp) |
| 103 | { |
| 104 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n"); |
| 105 | fprintf(ofp, "\n"); |
| 106 | fprintf(ofp, "Options:\n"); |
| 107 | fprintf(ofp, " -h, --help Show this help\n"); |
| 108 | fprintf(ofp, " --list-options Simple listing of options\n"); |
| 109 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
| 110 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); |
| 111 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
| 112 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
| 113 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
| 114 | fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); |
| 115 | fprintf(ofp, "\n"); |
| 116 | fprintf(ofp, "Event options:\n"); |
| 117 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); |
| 118 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
| 119 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); |
| 120 | fprintf(ofp, " e.g.:\n"); |
| 121 | fprintf(ofp, " \"*\"\n"); |
| 122 | fprintf(ofp, " \"app_component:na*\"\n"); |
| 123 | fprintf(ofp, " --probe (addr | symbol | symbol+offset)\n"); |
| 124 | fprintf(ofp, " Dynamic probe.\n"); |
| 125 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); |
| 126 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); |
| 127 | fprintf(ofp, " --function (addr | symbol | symbol+offset)\n"); |
| 128 | fprintf(ofp, " Dynamic function entry/return probe.\n"); |
| 129 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); |
| 130 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); |
| 131 | #if 0 |
| 132 | fprintf(ofp, " --function:entry symbol\n"); |
| 133 | fprintf(ofp, " Function tracer event\n"); |
| 134 | #endif |
| 135 | fprintf(ofp, " --syscall System call event\n"); |
| 136 | fprintf(ofp, "\n"); |
| 137 | fprintf(ofp, " --loglevel name\n"); |
| 138 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); |
| 139 | fprintf(ofp, " --loglevel-only name\n"); |
| 140 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); |
| 141 | fprintf(ofp, "\n"); |
| 142 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
| 143 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); |
| 144 | fprintf(ofp, " wildcard.\n"); |
| 145 | fprintf(ofp, " Available loglevels:\n"); |
| 146 | fprintf(ofp, " (higher value is more verbose)\n"); |
| 147 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
| 148 | fprintf(ofp, " TRACE_ALERT = 1\n"); |
| 149 | fprintf(ofp, " TRACE_CRIT = 2\n"); |
| 150 | fprintf(ofp, " TRACE_ERR = 3\n"); |
| 151 | fprintf(ofp, " TRACE_WARNING = 4\n"); |
| 152 | fprintf(ofp, " TRACE_NOTICE = 5\n"); |
| 153 | fprintf(ofp, " TRACE_INFO = 6\n"); |
| 154 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); |
| 155 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); |
| 156 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); |
| 157 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); |
| 158 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); |
| 159 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); |
| 160 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); |
| 161 | fprintf(ofp, " TRACE_DEBUG = 14\n"); |
| 162 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); |
| 163 | fprintf(ofp, "\n"); |
| 164 | fprintf(ofp, " Available JUL domain loglevels:\n"); |
| 165 | fprintf(ofp, " JUL_OFF = INT32_MAX\n"); |
| 166 | fprintf(ofp, " JUL_SEVERE = %d\n", LTTNG_LOGLEVEL_JUL_SEVERE); |
| 167 | fprintf(ofp, " JUL_WARNING = %d\n", LTTNG_LOGLEVEL_JUL_WARNING); |
| 168 | fprintf(ofp, " JUL_INFO = %d\n", LTTNG_LOGLEVEL_JUL_INFO); |
| 169 | fprintf(ofp, " JUL_CONFIG = %d\n", LTTNG_LOGLEVEL_JUL_CONFIG); |
| 170 | fprintf(ofp, " JUL_FINE = %d\n", LTTNG_LOGLEVEL_JUL_FINE); |
| 171 | fprintf(ofp, " JUL_FINER = %d\n", LTTNG_LOGLEVEL_JUL_FINER); |
| 172 | fprintf(ofp, " JUL_FINEST = %d\n", LTTNG_LOGLEVEL_JUL_FINEST); |
| 173 | fprintf(ofp, " JUL_ALL = INT32_MIN\n"); |
| 174 | fprintf(ofp, " (shortcuts such as \"severe\" are allowed)\n"); |
| 175 | fprintf(ofp, "\n"); |
| 176 | fprintf(ofp, " -f, --filter \'expression\'\n"); |
| 177 | fprintf(ofp, " Filter expression on event fields and context.\n"); |
| 178 | fprintf(ofp, " Event recording depends on evaluation.\n"); |
| 179 | fprintf(ofp, " Only specify on first activation of\n"); |
| 180 | fprintf(ofp, " a given event within a session.\n"); |
| 181 | fprintf(ofp, " Filter only allowed when enabling\n"); |
| 182 | fprintf(ofp, " events within a session before tracing\n"); |
| 183 | fprintf(ofp, " is started. If the filter fails to link\n"); |
| 184 | fprintf(ofp, " with the event within the traced domain,\n"); |
| 185 | fprintf(ofp, " the event will be discarded. Currently,\n"); |
| 186 | fprintf(ofp, " filter is only implemented for the user-space\n"); |
| 187 | fprintf(ofp, " tracer.\n"); |
| 188 | fprintf(ofp, " Expression examples:.\n"); |
| 189 | fprintf(ofp, " \n"); |
| 190 | fprintf(ofp, " 'intfield > 500 && intfield < 503'\n"); |
| 191 | fprintf(ofp, " '(strfield == \"test\" || intfield != 10) && intfield > 33'\n"); |
| 192 | fprintf(ofp, " 'doublefield > 1.1 && intfield < 5.3'\n"); |
| 193 | fprintf(ofp, " \n"); |
| 194 | fprintf(ofp, " Wildcards are allowed at the end of strings:\n"); |
| 195 | fprintf(ofp, " 'seqfield1 == \"te*\"'\n"); |
| 196 | fprintf(ofp, " In string literals, the escape character is '\\'.\n"); |
| 197 | fprintf(ofp, " Use '\\*' for the '*' character, and '\\\\' for\n"); |
| 198 | fprintf(ofp, " the '\\' character. Wildcard match any sequence of,\n"); |
| 199 | fprintf(ofp, " characters including an empty sub-string (match 0 or\n"); |
| 200 | fprintf(ofp, " more characters).\n"); |
| 201 | fprintf(ofp, "\n"); |
| 202 | fprintf(ofp, " Context information can be used for filtering. The\n"); |
| 203 | fprintf(ofp, " examples below show usage of context filtering on\n"); |
| 204 | fprintf(ofp, " process name (with a wildcard), process ID range, and\n"); |
| 205 | fprintf(ofp, " unique thread ID for filtering. The process and\n"); |
| 206 | fprintf(ofp, " thread ID of running applications can be found under\n"); |
| 207 | fprintf(ofp, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n"); |
| 208 | fprintf(ofp, "\n"); |
| 209 | fprintf(ofp, " '$ctx.procname == \"demo*\"'\n"); |
| 210 | fprintf(ofp, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n"); |
| 211 | fprintf(ofp, " '$ctx.vtid == 1234'\n"); |
| 212 | fprintf(ofp, " -x, --exclude LIST\n"); |
| 213 | fprintf(ofp, " Add exclusions to UST tracepoints:\n"); |
| 214 | fprintf(ofp, " Events that match any of the items\n"); |
| 215 | fprintf(ofp, " in the comma-separated LIST are not\n"); |
| 216 | fprintf(ofp, " enabled, even if they match a wildcard\n"); |
| 217 | fprintf(ofp, " definition of the event.\n"); |
| 218 | fprintf(ofp, "\n"); |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Parse probe options. |
| 223 | */ |
| 224 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
| 225 | { |
| 226 | int ret; |
| 227 | char s_hex[19]; |
| 228 | char name[LTTNG_SYMBOL_NAME_LEN]; |
| 229 | |
| 230 | if (opt == NULL) { |
| 231 | ret = -1; |
| 232 | goto end; |
| 233 | } |
| 234 | |
| 235 | /* Check for symbol+offset */ |
| 236 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
| 237 | if (ret == 2) { |
| 238 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
| 239 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 240 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
| 241 | if (*s_hex == '\0') { |
| 242 | ERR("Invalid probe offset %s", s_hex); |
| 243 | ret = -1; |
| 244 | goto end; |
| 245 | } |
| 246 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
| 247 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
| 248 | ev->attr.probe.addr = 0; |
| 249 | goto end; |
| 250 | } |
| 251 | |
| 252 | /* Check for symbol */ |
| 253 | if (isalpha(name[0])) { |
| 254 | ret = sscanf(opt, "%s", name); |
| 255 | if (ret == 1) { |
| 256 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
| 257 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 258 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
| 259 | ev->attr.probe.offset = 0; |
| 260 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
| 261 | ev->attr.probe.addr = 0; |
| 262 | goto end; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | /* Check for address */ |
| 267 | ret = sscanf(opt, "%s", s_hex); |
| 268 | if (ret > 0) { |
| 269 | if (*s_hex == '\0') { |
| 270 | ERR("Invalid probe address %s", s_hex); |
| 271 | ret = -1; |
| 272 | goto end; |
| 273 | } |
| 274 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
| 275 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
| 276 | ev->attr.probe.offset = 0; |
| 277 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); |
| 278 | goto end; |
| 279 | } |
| 280 | |
| 281 | /* No match */ |
| 282 | ret = -1; |
| 283 | |
| 284 | end: |
| 285 | return ret; |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * Maps JUL loglevel from string to value |
| 290 | */ |
| 291 | static int loglevel_jul_str_to_value(const char *inputstr) |
| 292 | { |
| 293 | int i = 0; |
| 294 | char str[LTTNG_SYMBOL_NAME_LEN]; |
| 295 | |
| 296 | /* |
| 297 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is |
| 298 | * added at the end of the loop so a the upper bound we avoid the overflow. |
| 299 | */ |
| 300 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { |
| 301 | str[i] = toupper(inputstr[i]); |
| 302 | i++; |
| 303 | } |
| 304 | str[i] = '\0'; |
| 305 | |
| 306 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { |
| 307 | return LTTNG_LOGLEVEL_JUL_OFF; |
| 308 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { |
| 309 | return LTTNG_LOGLEVEL_JUL_SEVERE; |
| 310 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { |
| 311 | return LTTNG_LOGLEVEL_JUL_WARNING; |
| 312 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { |
| 313 | return LTTNG_LOGLEVEL_JUL_INFO; |
| 314 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { |
| 315 | return LTTNG_LOGLEVEL_JUL_CONFIG; |
| 316 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { |
| 317 | return LTTNG_LOGLEVEL_JUL_FINE; |
| 318 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { |
| 319 | return LTTNG_LOGLEVEL_JUL_FINER; |
| 320 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { |
| 321 | return LTTNG_LOGLEVEL_JUL_FINEST; |
| 322 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { |
| 323 | return LTTNG_LOGLEVEL_JUL_ALL; |
| 324 | } else { |
| 325 | return -1; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Maps loglevel from string to value |
| 331 | */ |
| 332 | static |
| 333 | int loglevel_str_to_value(const char *inputstr) |
| 334 | { |
| 335 | int i = 0; |
| 336 | char str[LTTNG_SYMBOL_NAME_LEN]; |
| 337 | |
| 338 | /* |
| 339 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is |
| 340 | * added at the end of the loop so a the upper bound we avoid the overflow. |
| 341 | */ |
| 342 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { |
| 343 | str[i] = toupper(inputstr[i]); |
| 344 | i++; |
| 345 | } |
| 346 | str[i] = '\0'; |
| 347 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { |
| 348 | return LTTNG_LOGLEVEL_EMERG; |
| 349 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { |
| 350 | return LTTNG_LOGLEVEL_ALERT; |
| 351 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { |
| 352 | return LTTNG_LOGLEVEL_CRIT; |
| 353 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { |
| 354 | return LTTNG_LOGLEVEL_ERR; |
| 355 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { |
| 356 | return LTTNG_LOGLEVEL_WARNING; |
| 357 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { |
| 358 | return LTTNG_LOGLEVEL_NOTICE; |
| 359 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { |
| 360 | return LTTNG_LOGLEVEL_INFO; |
| 361 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { |
| 362 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; |
| 363 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { |
| 364 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; |
| 365 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { |
| 366 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; |
| 367 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { |
| 368 | return LTTNG_LOGLEVEL_DEBUG_MODULE; |
| 369 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { |
| 370 | return LTTNG_LOGLEVEL_DEBUG_UNIT; |
| 371 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { |
| 372 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; |
| 373 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { |
| 374 | return LTTNG_LOGLEVEL_DEBUG_LINE; |
| 375 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { |
| 376 | return LTTNG_LOGLEVEL_DEBUG; |
| 377 | } else { |
| 378 | return -1; |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | static |
| 383 | const char *print_channel_name(const char *name) |
| 384 | { |
| 385 | return name ? : DEFAULT_CHANNEL_NAME; |
| 386 | } |
| 387 | |
| 388 | static |
| 389 | const char *print_raw_channel_name(const char *name) |
| 390 | { |
| 391 | return name ? : "<default>"; |
| 392 | } |
| 393 | |
| 394 | /* |
| 395 | * Return allocated string for pretty-printing exclusion names. |
| 396 | */ |
| 397 | static |
| 398 | char *print_exclusions(int count, char **names) |
| 399 | { |
| 400 | int length = 0; |
| 401 | int i; |
| 402 | const char *preamble = " excluding "; |
| 403 | char *ret; |
| 404 | |
| 405 | if (count == 0) { |
| 406 | return strdup(""); |
| 407 | } |
| 408 | |
| 409 | /* calculate total required length */ |
| 410 | for (i = 0; i < count; i++) { |
| 411 | length += strlen(names[i]) + 1; |
| 412 | } |
| 413 | |
| 414 | /* add length of preamble + one for NUL - one for last (missing) comma */ |
| 415 | length += strlen(preamble); |
| 416 | ret = malloc(length); |
| 417 | strncpy(ret, preamble, length); |
| 418 | for (i = 0; i < count; i++) { |
| 419 | strcat(ret, names[i]); |
| 420 | if (i != count - 1) { |
| 421 | strcat(ret, ","); |
| 422 | } |
| 423 | } |
| 424 | return ret; |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Compare list of exclusions against an event name. |
| 429 | * Return a list of legal exclusion names. |
| 430 | * Produce an error or a warning about others (depending on the situation) |
| 431 | */ |
| 432 | static |
| 433 | int check_exclusion_subsets(const char *event_name, |
| 434 | const char *exclusions, |
| 435 | int *exclusion_count_ptr, |
| 436 | char ***exclusion_list_ptr) |
| 437 | { |
| 438 | const char *excluder_ptr; |
| 439 | const char *event_ptr; |
| 440 | const char *next_excluder; |
| 441 | int excluder_length; |
| 442 | int exclusion_count = 0; |
| 443 | char **exclusion_list = NULL; |
| 444 | int ret = CMD_SUCCESS; |
| 445 | |
| 446 | if (event_name[strlen(event_name) - 1] != '*') { |
| 447 | ERR("Event %s: Excluders can only be used with wildcarded events", event_name); |
| 448 | goto error; |
| 449 | } |
| 450 | |
| 451 | next_excluder = exclusions; |
| 452 | while (*next_excluder != 0) { |
| 453 | event_ptr = event_name; |
| 454 | excluder_ptr = next_excluder; |
| 455 | excluder_length = strcspn(next_excluder, ","); |
| 456 | |
| 457 | /* Scan both the excluder and the event letter by letter */ |
| 458 | while (1) { |
| 459 | char e, x; |
| 460 | |
| 461 | e = *event_ptr; |
| 462 | x = *excluder_ptr; |
| 463 | |
| 464 | if (x == '*') { |
| 465 | /* Event is a subset of the excluder */ |
| 466 | ERR("Event %s: %.*s excludes all events from %s", |
| 467 | event_name, |
| 468 | excluder_length, |
| 469 | next_excluder, |
| 470 | event_name); |
| 471 | goto error; |
| 472 | } |
| 473 | if (e == '*') { |
| 474 | /* Excluder is a proper subset of event */ |
| 475 | exclusion_count++; |
| 476 | exclusion_list = realloc(exclusion_list, sizeof(char **) * exclusion_count); |
| 477 | exclusion_list[exclusion_count - 1] = strndup(next_excluder, excluder_length); |
| 478 | |
| 479 | break; |
| 480 | } |
| 481 | if (x != e) { |
| 482 | /* Excluder and event sets have no common elements */ |
| 483 | WARN("Event %s: %.*s does not exclude any events from %s", |
| 484 | event_name, |
| 485 | excluder_length, |
| 486 | next_excluder, |
| 487 | event_name); |
| 488 | break; |
| 489 | } |
| 490 | excluder_ptr++; |
| 491 | event_ptr++; |
| 492 | } |
| 493 | /* next excluder */ |
| 494 | next_excluder += excluder_length; |
| 495 | if (*next_excluder == ',') { |
| 496 | next_excluder++; |
| 497 | } |
| 498 | } |
| 499 | goto end; |
| 500 | error: |
| 501 | while (exclusion_count--) { |
| 502 | free(exclusion_list[exclusion_count]); |
| 503 | } |
| 504 | if (exclusion_list != NULL) { |
| 505 | free(exclusion_list); |
| 506 | } |
| 507 | exclusion_list = NULL; |
| 508 | exclusion_count = 0; |
| 509 | ret = CMD_ERROR; |
| 510 | end: |
| 511 | *exclusion_count_ptr = exclusion_count; |
| 512 | *exclusion_list_ptr = exclusion_list; |
| 513 | return ret; |
| 514 | } |
| 515 | /* |
| 516 | * Enabling event using the lttng API. |
| 517 | */ |
| 518 | static int enable_events(char *session_name) |
| 519 | { |
| 520 | int ret = CMD_SUCCESS, warn = 0; |
| 521 | char *event_name, *channel_name = NULL; |
| 522 | struct lttng_event ev; |
| 523 | struct lttng_domain dom; |
| 524 | int exclusion_count = 0; |
| 525 | char **exclusion_list = NULL; |
| 526 | |
| 527 | memset(&ev, 0, sizeof(ev)); |
| 528 | memset(&dom, 0, sizeof(dom)); |
| 529 | |
| 530 | if (opt_kernel) { |
| 531 | if (opt_filter) { |
| 532 | ERR("Filter not implement for kernel tracing yet"); |
| 533 | ret = CMD_ERROR; |
| 534 | goto error; |
| 535 | } |
| 536 | if (opt_loglevel) { |
| 537 | WARN("Kernel loglevels are not supported."); |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | /* Create lttng domain */ |
| 542 | if (opt_kernel) { |
| 543 | dom.type = LTTNG_DOMAIN_KERNEL; |
| 544 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
| 545 | } else if (opt_userspace) { |
| 546 | dom.type = LTTNG_DOMAIN_UST; |
| 547 | /* Default. */ |
| 548 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
| 549 | } else if (opt_jul) { |
| 550 | dom.type = LTTNG_DOMAIN_JUL; |
| 551 | /* Default. */ |
| 552 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
| 553 | } else { |
| 554 | print_missing_domain(); |
| 555 | ret = CMD_ERROR; |
| 556 | goto error; |
| 557 | } |
| 558 | |
| 559 | if (opt_kernel && opt_exclude) { |
| 560 | ERR("Event name exclusions are not yet implemented for kernel events"); |
| 561 | ret = CMD_ERROR; |
| 562 | goto error; |
| 563 | } |
| 564 | |
| 565 | channel_name = opt_channel_name; |
| 566 | |
| 567 | handle = lttng_create_handle(session_name, &dom); |
| 568 | if (handle == NULL) { |
| 569 | ret = -1; |
| 570 | goto error; |
| 571 | } |
| 572 | |
| 573 | if (opt_enable_all) { |
| 574 | /* Default setup for enable all */ |
| 575 | if (opt_kernel) { |
| 576 | ev.type = opt_event_type; |
| 577 | ev.name[0] = '\0'; |
| 578 | /* kernel loglevels not implemented */ |
| 579 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
| 580 | } else { |
| 581 | ev.type = LTTNG_EVENT_TRACEPOINT; |
| 582 | strcpy(ev.name, "*"); |
| 583 | ev.loglevel_type = opt_loglevel_type; |
| 584 | if (opt_loglevel) { |
| 585 | assert(opt_userspace || opt_jul); |
| 586 | if (opt_userspace) { |
| 587 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
| 588 | } else if (opt_jul) { |
| 589 | ev.loglevel = loglevel_jul_str_to_value(opt_loglevel); |
| 590 | } |
| 591 | if (ev.loglevel == -1) { |
| 592 | ERR("Unknown loglevel %s", opt_loglevel); |
| 593 | ret = -LTTNG_ERR_INVALID; |
| 594 | goto error; |
| 595 | } |
| 596 | } else { |
| 597 | assert(opt_userspace || opt_jul); |
| 598 | if (opt_userspace) { |
| 599 | ev.loglevel = -1; |
| 600 | } else if (opt_jul) { |
| 601 | ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | if (opt_exclude) { |
| 607 | ret = check_exclusion_subsets("*", opt_exclude, |
| 608 | &exclusion_count, &exclusion_list); |
| 609 | if (ret == CMD_ERROR) { |
| 610 | goto error; |
| 611 | } |
| 612 | } |
| 613 | if (!opt_filter) { |
| 614 | ret = lttng_enable_event_with_exclusions(handle, |
| 615 | &ev, channel_name, |
| 616 | NULL, |
| 617 | exclusion_count, exclusion_list); |
| 618 | if (ret < 0) { |
| 619 | switch (-ret) { |
| 620 | case LTTNG_ERR_KERN_EVENT_EXIST: |
| 621 | WARN("Kernel events already enabled (channel %s, session %s)", |
| 622 | print_channel_name(channel_name), session_name); |
| 623 | break; |
| 624 | default: |
| 625 | ERR("Events: %s (channel %s, session %s)", |
| 626 | lttng_strerror(ret), |
| 627 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME |
| 628 | ? print_raw_channel_name(channel_name) |
| 629 | : print_channel_name(channel_name), |
| 630 | session_name); |
| 631 | break; |
| 632 | } |
| 633 | goto end; |
| 634 | } |
| 635 | |
| 636 | switch (opt_event_type) { |
| 637 | case LTTNG_EVENT_TRACEPOINT: |
| 638 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
| 639 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 640 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", |
| 641 | get_domain_str(dom.type), |
| 642 | exclusion_string, |
| 643 | print_channel_name(channel_name), |
| 644 | opt_loglevel); |
| 645 | free(exclusion_string); |
| 646 | } else { |
| 647 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 648 | MSG("All %s tracepoints%s are enabled in channel %s", |
| 649 | get_domain_str(dom.type), |
| 650 | exclusion_string, |
| 651 | print_channel_name(channel_name)); |
| 652 | free(exclusion_string); |
| 653 | } |
| 654 | break; |
| 655 | case LTTNG_EVENT_SYSCALL: |
| 656 | if (opt_kernel) { |
| 657 | MSG("All kernel system calls are enabled in channel %s", |
| 658 | print_channel_name(channel_name)); |
| 659 | } |
| 660 | break; |
| 661 | case LTTNG_EVENT_ALL: |
| 662 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
| 663 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 664 | MSG("All %s events%s are enabled in channel %s for loglevel %s", |
| 665 | get_domain_str(dom.type), |
| 666 | exclusion_string, |
| 667 | print_channel_name(channel_name), |
| 668 | opt_loglevel); |
| 669 | free(exclusion_string); |
| 670 | } else { |
| 671 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 672 | MSG("All %s events%s are enabled in channel %s", |
| 673 | get_domain_str(dom.type), |
| 674 | exclusion_string, |
| 675 | print_channel_name(channel_name)); |
| 676 | free(exclusion_string); |
| 677 | } |
| 678 | break; |
| 679 | default: |
| 680 | /* |
| 681 | * We should not be here since lttng_enable_event should have |
| 682 | * failed on the event type. |
| 683 | */ |
| 684 | goto error; |
| 685 | } |
| 686 | } |
| 687 | if (opt_filter) { |
| 688 | ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name, |
| 689 | opt_filter, exclusion_count, exclusion_list); |
| 690 | if (ret < 0) { |
| 691 | switch (-ret) { |
| 692 | case LTTNG_ERR_FILTER_EXIST: |
| 693 | WARN("Filter on all events is already enabled" |
| 694 | " (channel %s, session %s)", |
| 695 | print_channel_name(channel_name), session_name); |
| 696 | break; |
| 697 | default: |
| 698 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
| 699 | lttng_strerror(ret), |
| 700 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME |
| 701 | ? print_raw_channel_name(channel_name) |
| 702 | : print_channel_name(channel_name), |
| 703 | session_name, opt_filter); |
| 704 | break; |
| 705 | } |
| 706 | goto error; |
| 707 | } else { |
| 708 | MSG("Filter '%s' successfully set", opt_filter); |
| 709 | } |
| 710 | } |
| 711 | goto end; |
| 712 | } |
| 713 | |
| 714 | /* Strip event list */ |
| 715 | event_name = strtok(opt_event_list, ","); |
| 716 | while (event_name != NULL) { |
| 717 | /* Copy name and type of the event */ |
| 718 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); |
| 719 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 720 | ev.type = opt_event_type; |
| 721 | |
| 722 | /* Kernel tracer action */ |
| 723 | if (opt_kernel) { |
| 724 | DBG("Enabling kernel event %s for channel %s", |
| 725 | event_name, |
| 726 | print_channel_name(channel_name)); |
| 727 | |
| 728 | switch (opt_event_type) { |
| 729 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
| 730 | ev.type = LTTNG_EVENT_TRACEPOINT; |
| 731 | /* Fall-through */ |
| 732 | case LTTNG_EVENT_TRACEPOINT: |
| 733 | break; |
| 734 | case LTTNG_EVENT_PROBE: |
| 735 | ret = parse_probe_opts(&ev, opt_probe); |
| 736 | if (ret < 0) { |
| 737 | ERR("Unable to parse probe options"); |
| 738 | ret = 0; |
| 739 | goto error; |
| 740 | } |
| 741 | break; |
| 742 | case LTTNG_EVENT_FUNCTION: |
| 743 | ret = parse_probe_opts(&ev, opt_function); |
| 744 | if (ret < 0) { |
| 745 | ERR("Unable to parse function probe options"); |
| 746 | ret = 0; |
| 747 | goto error; |
| 748 | } |
| 749 | break; |
| 750 | case LTTNG_EVENT_FUNCTION_ENTRY: |
| 751 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
| 752 | LTTNG_SYMBOL_NAME_LEN); |
| 753 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 754 | break; |
| 755 | case LTTNG_EVENT_SYSCALL: |
| 756 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
| 757 | "for all syscalls."); |
| 758 | default: |
| 759 | ret = CMD_UNDEFINED; |
| 760 | goto error; |
| 761 | } |
| 762 | |
| 763 | /* kernel loglevels not implemented */ |
| 764 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
| 765 | } else if (opt_userspace) { /* User-space tracer action */ |
| 766 | #if 0 |
| 767 | if (opt_cmd_name != NULL || opt_pid) { |
| 768 | MSG("Only supporting tracing all UST processes (-u) for now."); |
| 769 | ret = CMD_UNDEFINED; |
| 770 | goto error; |
| 771 | } |
| 772 | #endif |
| 773 | |
| 774 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
| 775 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
| 776 | |
| 777 | switch (opt_event_type) { |
| 778 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
| 779 | /* Fall-through */ |
| 780 | case LTTNG_EVENT_TRACEPOINT: |
| 781 | /* Copy name and type of the event */ |
| 782 | ev.type = LTTNG_EVENT_TRACEPOINT; |
| 783 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); |
| 784 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 785 | break; |
| 786 | case LTTNG_EVENT_PROBE: |
| 787 | case LTTNG_EVENT_FUNCTION: |
| 788 | case LTTNG_EVENT_FUNCTION_ENTRY: |
| 789 | case LTTNG_EVENT_SYSCALL: |
| 790 | default: |
| 791 | ERR("Event type not available for user-space tracing"); |
| 792 | ret = CMD_UNSUPPORTED; |
| 793 | goto error; |
| 794 | } |
| 795 | |
| 796 | if (opt_exclude) { |
| 797 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
| 798 | ERR("Exclusion option can only be used with tracepoint events"); |
| 799 | ret = CMD_ERROR; |
| 800 | goto error; |
| 801 | } |
| 802 | /* Free previously allocated items */ |
| 803 | if (exclusion_list != NULL) { |
| 804 | while (exclusion_count--) { |
| 805 | free(exclusion_list[exclusion_count]); |
| 806 | } |
| 807 | free(exclusion_list); |
| 808 | exclusion_list = NULL; |
| 809 | } |
| 810 | /* Check for proper subsets */ |
| 811 | ret = check_exclusion_subsets(event_name, opt_exclude, |
| 812 | &exclusion_count, &exclusion_list); |
| 813 | if (ret == CMD_ERROR) { |
| 814 | goto error; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | ev.loglevel_type = opt_loglevel_type; |
| 819 | if (opt_loglevel) { |
| 820 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
| 821 | if (ev.loglevel == -1) { |
| 822 | ERR("Unknown loglevel %s", opt_loglevel); |
| 823 | ret = -LTTNG_ERR_INVALID; |
| 824 | goto error; |
| 825 | } |
| 826 | } else { |
| 827 | ev.loglevel = -1; |
| 828 | } |
| 829 | } else if (opt_jul) { |
| 830 | if (opt_event_type != LTTNG_EVENT_ALL && |
| 831 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
| 832 | ERR("Event type not supported for JUL domain."); |
| 833 | ret = CMD_UNSUPPORTED; |
| 834 | goto error; |
| 835 | } |
| 836 | |
| 837 | ev.loglevel_type = opt_loglevel_type; |
| 838 | if (opt_loglevel) { |
| 839 | ev.loglevel = loglevel_jul_str_to_value(opt_loglevel); |
| 840 | if (ev.loglevel == -1) { |
| 841 | ERR("Unknown loglevel %s", opt_loglevel); |
| 842 | ret = -LTTNG_ERR_INVALID; |
| 843 | goto error; |
| 844 | } |
| 845 | } else { |
| 846 | ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
| 847 | } |
| 848 | ev.type = LTTNG_EVENT_TRACEPOINT; |
| 849 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); |
| 850 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
| 851 | } else { |
| 852 | print_missing_domain(); |
| 853 | ret = CMD_ERROR; |
| 854 | goto error; |
| 855 | } |
| 856 | |
| 857 | if (!opt_filter) { |
| 858 | char *exclusion_string; |
| 859 | |
| 860 | ret = lttng_enable_event_with_exclusions(handle, |
| 861 | &ev, channel_name, |
| 862 | NULL, exclusion_count, exclusion_list); |
| 863 | exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 864 | if (ret < 0) { |
| 865 | /* Turn ret to positive value to handle the positive error code */ |
| 866 | switch (-ret) { |
| 867 | case LTTNG_ERR_KERN_EVENT_EXIST: |
| 868 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
| 869 | event_name, |
| 870 | exclusion_string, |
| 871 | print_channel_name(channel_name), session_name); |
| 872 | break; |
| 873 | default: |
| 874 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
| 875 | exclusion_string, |
| 876 | lttng_strerror(ret), |
| 877 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME |
| 878 | ? print_raw_channel_name(channel_name) |
| 879 | : print_channel_name(channel_name), |
| 880 | session_name); |
| 881 | break; |
| 882 | } |
| 883 | warn = 1; |
| 884 | } else { |
| 885 | MSG("%s event %s%s created in channel %s", |
| 886 | get_domain_str(dom.type), event_name, |
| 887 | exclusion_string, |
| 888 | print_channel_name(channel_name)); |
| 889 | } |
| 890 | free(exclusion_string); |
| 891 | } |
| 892 | |
| 893 | if (opt_filter) { |
| 894 | char *exclusion_string; |
| 895 | |
| 896 | ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name, |
| 897 | opt_filter, exclusion_count, exclusion_list); |
| 898 | exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
| 899 | |
| 900 | if (ret < 0) { |
| 901 | switch (-ret) { |
| 902 | case LTTNG_ERR_FILTER_EXIST: |
| 903 | WARN("Filter on event %s%s is already enabled" |
| 904 | " (channel %s, session %s)", |
| 905 | event_name, |
| 906 | exclusion_string, |
| 907 | print_channel_name(channel_name), session_name); |
| 908 | break; |
| 909 | default: |
| 910 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name, |
| 911 | exclusion_string, |
| 912 | lttng_strerror(ret), |
| 913 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME |
| 914 | ? print_raw_channel_name(channel_name) |
| 915 | : print_channel_name(channel_name), |
| 916 | session_name, opt_filter); |
| 917 | break; |
| 918 | } |
| 919 | free(exclusion_string); |
| 920 | goto error; |
| 921 | } else { |
| 922 | MSG("Event %s%s: Filter '%s' successfully set", |
| 923 | event_name, exclusion_string, |
| 924 | opt_filter); |
| 925 | } |
| 926 | free(exclusion_string); |
| 927 | } |
| 928 | |
| 929 | /* Next event */ |
| 930 | event_name = strtok(NULL, ","); |
| 931 | } |
| 932 | |
| 933 | end: |
| 934 | error: |
| 935 | if (warn) { |
| 936 | ret = CMD_WARNING; |
| 937 | } |
| 938 | lttng_destroy_handle(handle); |
| 939 | |
| 940 | if (exclusion_list != NULL) { |
| 941 | while (exclusion_count--) { |
| 942 | free(exclusion_list[exclusion_count]); |
| 943 | } |
| 944 | free(exclusion_list); |
| 945 | } |
| 946 | |
| 947 | return ret; |
| 948 | } |
| 949 | |
| 950 | /* |
| 951 | * Add event to trace session |
| 952 | */ |
| 953 | int cmd_enable_events(int argc, const char **argv) |
| 954 | { |
| 955 | int opt, ret = CMD_SUCCESS; |
| 956 | static poptContext pc; |
| 957 | char *session_name = NULL; |
| 958 | int event_type = -1; |
| 959 | |
| 960 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
| 961 | poptReadDefaultConfig(pc, 0); |
| 962 | |
| 963 | /* Default event type */ |
| 964 | opt_event_type = LTTNG_EVENT_ALL; |
| 965 | |
| 966 | while ((opt = poptGetNextOpt(pc)) != -1) { |
| 967 | switch (opt) { |
| 968 | case OPT_HELP: |
| 969 | usage(stdout); |
| 970 | goto end; |
| 971 | case OPT_TRACEPOINT: |
| 972 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
| 973 | break; |
| 974 | case OPT_PROBE: |
| 975 | opt_event_type = LTTNG_EVENT_PROBE; |
| 976 | break; |
| 977 | case OPT_FUNCTION: |
| 978 | opt_event_type = LTTNG_EVENT_FUNCTION; |
| 979 | break; |
| 980 | case OPT_FUNCTION_ENTRY: |
| 981 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; |
| 982 | break; |
| 983 | case OPT_SYSCALL: |
| 984 | opt_event_type = LTTNG_EVENT_SYSCALL; |
| 985 | break; |
| 986 | case OPT_USERSPACE: |
| 987 | opt_userspace = 1; |
| 988 | break; |
| 989 | case OPT_LOGLEVEL: |
| 990 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
| 991 | opt_loglevel = poptGetOptArg(pc); |
| 992 | break; |
| 993 | case OPT_LOGLEVEL_ONLY: |
| 994 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
| 995 | opt_loglevel = poptGetOptArg(pc); |
| 996 | break; |
| 997 | case OPT_LIST_OPTIONS: |
| 998 | list_cmd_options(stdout, long_options); |
| 999 | goto end; |
| 1000 | case OPT_FILTER: |
| 1001 | break; |
| 1002 | case OPT_EXCLUDE: |
| 1003 | break; |
| 1004 | default: |
| 1005 | usage(stderr); |
| 1006 | ret = CMD_UNDEFINED; |
| 1007 | goto end; |
| 1008 | } |
| 1009 | |
| 1010 | /* Validate event type. Multiple event type are not supported. */ |
| 1011 | if (event_type == -1) { |
| 1012 | event_type = opt_event_type; |
| 1013 | } else { |
| 1014 | if (event_type != opt_event_type) { |
| 1015 | ERR("Multiple event type not supported."); |
| 1016 | ret = CMD_ERROR; |
| 1017 | goto end; |
| 1018 | } |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | opt_event_list = (char*) poptGetArg(pc); |
| 1023 | if (opt_event_list == NULL && opt_enable_all == 0) { |
| 1024 | ERR("Missing event name(s).\n"); |
| 1025 | usage(stderr); |
| 1026 | ret = CMD_ERROR; |
| 1027 | goto end; |
| 1028 | } |
| 1029 | |
| 1030 | if (!opt_session_name) { |
| 1031 | session_name = get_session_name(); |
| 1032 | if (session_name == NULL) { |
| 1033 | ret = CMD_ERROR; |
| 1034 | goto end; |
| 1035 | } |
| 1036 | } else { |
| 1037 | session_name = opt_session_name; |
| 1038 | } |
| 1039 | |
| 1040 | ret = enable_events(session_name); |
| 1041 | |
| 1042 | end: |
| 1043 | if (opt_session_name == NULL) { |
| 1044 | free(session_name); |
| 1045 | } |
| 1046 | |
| 1047 | poptFreeContext(pc); |
| 1048 | return ret; |
| 1049 | } |