Commit | Line | Data |
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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 | |
19 | #include <popt.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
5a0de755 | 26 | #include <inttypes.h> |
8f0d098b | 27 | #include <ctype.h> |
f3ed775e | 28 | |
c399183f | 29 | #include "../command.h" |
42224349 | 30 | #include <src/common/sessiond-comm/sessiond-comm.h> |
f3ed775e DG |
31 | |
32 | static char *opt_event_list; | |
33 | static int opt_event_type; | |
0cda4f28 MD |
34 | static const char *opt_loglevel; |
35 | static int opt_loglevel_type; | |
6181537c | 36 | static int opt_kernel; |
5440dc42 | 37 | static char *opt_session_name; |
f3ed775e DG |
38 | static int opt_userspace; |
39 | static int opt_enable_all; | |
cf0e5467 | 40 | static char *opt_probe; |
8f0d098b MD |
41 | static char *opt_function; |
42 | static char *opt_function_entry_symbol; | |
f3ed775e | 43 | static char *opt_channel_name; |
d78d6610 DG |
44 | #if 0 |
45 | /* Not implemented yet */ | |
46 | static char *opt_cmd_name; | |
47 | static pid_t opt_pid; | |
48 | #endif | |
f3ed775e DG |
49 | |
50 | enum { | |
51 | OPT_HELP = 1, | |
f3ed775e | 52 | OPT_TRACEPOINT, |
cf0e5467 | 53 | OPT_PROBE, |
f3ed775e | 54 | OPT_FUNCTION, |
8f0d098b | 55 | OPT_FUNCTION_ENTRY, |
a54bd42d | 56 | OPT_SYSCALL, |
eeac7d46 | 57 | OPT_USERSPACE, |
0cda4f28 MD |
58 | OPT_LOGLEVEL, |
59 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 60 | OPT_LIST_OPTIONS, |
f3ed775e DG |
61 | }; |
62 | ||
cd80958d DG |
63 | static struct lttng_handle *handle; |
64 | ||
f3ed775e DG |
65 | static struct poptOption long_options[] = { |
66 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
67 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 68 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 69 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
70 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
71 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 DG |
72 | #if 0 |
73 | /* Not implemented yet */ | |
40e9d5d3 | 74 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e | 75 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
76 | #else |
77 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
78 | #endif | |
f3ed775e | 79 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 80 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 81 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
82 | #if 0 |
83 | /* | |
84 | * Currently removed from lttng kernel tracer. Removed from | |
85 | * lttng UI to discourage its use. | |
86 | */ | |
40e9d5d3 | 87 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 88 | #endif |
7ebae521 | 89 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
90 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
91 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 92 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
93 | {0, 0, 0, 0, 0, 0, 0} |
94 | }; | |
95 | ||
96 | /* | |
97 | * usage | |
98 | */ | |
99 | static void usage(FILE *ofp) | |
100 | { | |
101 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); | |
102 | fprintf(ofp, "\n"); | |
103 | fprintf(ofp, " -h, --help Show this help\n"); | |
679b4943 | 104 | fprintf(ofp, " --list-options Simple listing of options\n"); |
27221701 DG |
105 | fprintf(ofp, " -s, --session Apply to session name\n"); |
106 | fprintf(ofp, " -c, --channel Apply to this channel\n"); | |
e08bff8d | 107 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
f3ed775e | 108 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
d78d6610 | 109 | #if 0 |
27221701 | 110 | fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer\n"); |
e14f64a8 DG |
111 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
112 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
113 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
d78d6610 | 114 | #else |
27221701 | 115 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
d78d6610 | 116 | #endif |
f3ed775e DG |
117 | fprintf(ofp, "\n"); |
118 | fprintf(ofp, "Event options:\n"); | |
119 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
120 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
121 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
122 | fprintf(ofp, " e.g.:\n"); | |
123 | fprintf(ofp, " \"*\"\n"); | |
124 | fprintf(ofp, " \"app_component:na*\"\n"); | |
8f0d098b | 125 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
126 | fprintf(ofp, " Dynamic probe.\n"); |
127 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
128 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
129 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
130 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
131 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
132 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 133 | #if 0 |
8f0d098b MD |
134 | fprintf(ofp, " --function:entry symbol\n"); |
135 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 136 | #endif |
a54bd42d | 137 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 138 | fprintf(ofp, "\n"); |
300b8fd5 MD |
139 | fprintf(ofp, " --loglevel name\n"); |
140 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); | |
141 | fprintf(ofp, " --loglevel-only name\n"); | |
142 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
143 | fprintf(ofp, "\n"); | |
0c8477c8 MD |
144 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
145 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); | |
146 | fprintf(ofp, " wildcard.\n"); | |
147 | fprintf(ofp, " Available loglevels:\n"); | |
148 | fprintf(ofp, " (higher value is more verbose)\n"); | |
46839cc2 MD |
149 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
150 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
151 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
152 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
153 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
154 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
155 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
156 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); | |
157 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); | |
158 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); | |
159 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); | |
160 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); | |
161 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); | |
162 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); | |
163 | fprintf(ofp, " TRACE_DEBUG = 14\n"); | |
164 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); | |
300b8fd5 | 165 | fprintf(ofp, "\n"); |
f3ed775e DG |
166 | } |
167 | ||
0d63dd19 | 168 | /* |
6181537c | 169 | * Parse probe options. |
0d63dd19 | 170 | */ |
cf0e5467 | 171 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
172 | { |
173 | int ret; | |
8ff0bbd0 | 174 | char s_hex[19]; |
0d63dd19 DG |
175 | char name[LTTNG_SYMBOL_NAME_LEN]; |
176 | ||
177 | if (opt == NULL) { | |
178 | ret = -1; | |
8f0d098b | 179 | goto end; |
0d63dd19 DG |
180 | } |
181 | ||
182 | /* Check for symbol+offset */ | |
8ff0bbd0 | 183 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 184 | if (ret == 2) { |
7d29a247 | 185 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 186 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 187 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
188 | if (strlen(s_hex) == 0) { |
189 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 190 | ret = -1; |
8f0d098b | 191 | goto end; |
0d63dd19 | 192 | } |
8ff0bbd0 | 193 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 194 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 195 | ev->attr.probe.addr = 0; |
8f0d098b MD |
196 | goto end; |
197 | } | |
198 | ||
199 | /* Check for symbol */ | |
200 | if (isalpha(name[0])) { | |
201 | ret = sscanf(opt, "%s", name); | |
202 | if (ret == 1) { | |
203 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 204 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
205 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
206 | ev->attr.probe.offset = 0; | |
207 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
208 | ev->attr.probe.addr = 0; | |
209 | goto end; | |
210 | } | |
0d63dd19 DG |
211 | } |
212 | ||
213 | /* Check for address */ | |
8ff0bbd0 | 214 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 215 | if (ret > 0) { |
8ff0bbd0 DG |
216 | if (strlen(s_hex) == 0) { |
217 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 218 | ret = -1; |
8f0d098b | 219 | goto end; |
0d63dd19 | 220 | } |
8ff0bbd0 | 221 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 222 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
223 | ev->attr.probe.offset = 0; |
224 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 225 | goto end; |
0d63dd19 DG |
226 | } |
227 | ||
228 | /* No match */ | |
229 | ret = -1; | |
230 | ||
8f0d098b | 231 | end: |
0d63dd19 DG |
232 | return ret; |
233 | } | |
234 | ||
8005f29a | 235 | /* |
0c8477c8 | 236 | * Maps loglevel from string to value |
8005f29a MD |
237 | */ |
238 | static | |
46839cc2 | 239 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 240 | { |
46839cc2 MD |
241 | int i = 0; |
242 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
243 | ||
244 | while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) { | |
245 | str[i] = toupper(inputstr[i]); | |
246 | i++; | |
247 | } | |
248 | str[i] = '\0'; | |
249 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
250 | return LTTNG_LOGLEVEL_EMERG; | |
251 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
252 | return LTTNG_LOGLEVEL_ALERT; | |
253 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
254 | return LTTNG_LOGLEVEL_CRIT; | |
255 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
256 | return LTTNG_LOGLEVEL_ERR; | |
257 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
258 | return LTTNG_LOGLEVEL_WARNING; | |
259 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
260 | return LTTNG_LOGLEVEL_NOTICE; | |
261 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
262 | return LTTNG_LOGLEVEL_INFO; | |
263 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
264 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
265 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
266 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
267 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
268 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
269 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
270 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
271 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
272 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
273 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
274 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
275 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
276 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
277 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
278 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
279 | } else { |
280 | return -1; | |
281 | } | |
282 | } | |
283 | ||
f3ed775e | 284 | /* |
6181537c | 285 | * Enabling event using the lttng API. |
f3ed775e | 286 | */ |
cd80958d | 287 | static int enable_events(char *session_name) |
f3ed775e | 288 | { |
ae856491 | 289 | int err, ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 290 | char *event_name, *channel_name = NULL; |
f3ed775e | 291 | struct lttng_event ev; |
7d29a247 | 292 | struct lttng_domain dom; |
f3ed775e | 293 | |
441c16a7 MD |
294 | memset(&ev, 0, sizeof(ev)); |
295 | memset(&dom, 0, sizeof(dom)); | |
296 | ||
7d29a247 DG |
297 | /* Create lttng domain */ |
298 | if (opt_kernel) { | |
299 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 300 | } else if (opt_userspace) { |
2bdd86d4 | 301 | dom.type = LTTNG_DOMAIN_UST; |
6181537c | 302 | } else { |
e14f64a8 | 303 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 304 | ret = CMD_ERROR; |
6181537c | 305 | goto error; |
2bdd86d4 | 306 | } |
7d29a247 | 307 | |
ae856491 DG |
308 | if (opt_channel_name == NULL) { |
309 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
310 | if (err < 0) { | |
311 | ret = CMD_FATAL; | |
312 | goto error; | |
313 | } | |
314 | } else { | |
315 | channel_name = opt_channel_name; | |
316 | } | |
317 | ||
cd80958d DG |
318 | handle = lttng_create_handle(session_name, &dom); |
319 | if (handle == NULL) { | |
320 | ret = -1; | |
321 | goto error; | |
322 | } | |
1aef21b6 | 323 | |
cd80958d | 324 | if (opt_enable_all) { |
8c9ae521 | 325 | /* Default setup for enable all */ |
75e8c5ab MD |
326 | if (opt_kernel) { |
327 | ev.type = opt_event_type; | |
328 | ev.name[0] = '\0'; | |
300b8fd5 MD |
329 | /* kernel loglevels not implemented */ |
330 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
331 | } else { |
332 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
333 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
334 | ev.loglevel_type = opt_loglevel_type; |
335 | if (opt_loglevel) { | |
336 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
337 | if (ev.loglevel == -1) { | |
338 | ERR("Unknown loglevel %s", opt_loglevel); | |
339 | ret = -1; | |
340 | goto error; | |
341 | } | |
22e25b71 MD |
342 | } else { |
343 | ev.loglevel = -1; | |
300b8fd5 | 344 | } |
75e8c5ab | 345 | } |
8c9ae521 DG |
346 | |
347 | ret = lttng_enable_event(handle, &ev, channel_name); | |
348 | if (ret < 0) { | |
42224349 DG |
349 | switch (-ret) { |
350 | case LTTCOMM_KERN_EVENT_EXIST: | |
351 | WARN("Kernel events already enabled (channel %s, session %s)", | |
352 | channel_name, session_name); | |
6d805133 | 353 | break; |
42224349 | 354 | default: |
a6de644c | 355 | ERR("Events: %s (channel %s, session %s)", |
42224349 DG |
356 | lttng_strerror(ret), channel_name, session_name); |
357 | break; | |
358 | } | |
6d805133 | 359 | goto end; |
8c9ae521 DG |
360 | } |
361 | ||
0133c199 MD |
362 | switch (opt_event_type) { |
363 | case LTTNG_EVENT_TRACEPOINT: | |
57064ada MD |
364 | if (opt_loglevel) { |
365 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", | |
366 | opt_kernel ? "kernel" : "UST", channel_name, | |
367 | opt_loglevel); | |
368 | } else { | |
369 | MSG("All %s tracepoints are enabled in channel %s", | |
370 | opt_kernel ? "kernel" : "UST", channel_name); | |
371 | ||
372 | } | |
0133c199 | 373 | break; |
a54bd42d | 374 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 375 | if (opt_kernel) { |
8c9ae521 DG |
376 | MSG("All kernel system calls are enabled in channel %s", |
377 | channel_name); | |
c93d9daf | 378 | } |
0133c199 | 379 | break; |
7a3d1328 | 380 | case LTTNG_EVENT_ALL: |
57064ada MD |
381 | if (opt_loglevel) { |
382 | MSG("All %s events are enabled in channel %s for loglevel %s", | |
383 | opt_kernel ? "kernel" : "UST", channel_name, | |
384 | opt_loglevel); | |
385 | } else { | |
386 | MSG("All %s events are enabled in channel %s", | |
387 | opt_kernel ? "kernel" : "UST", channel_name); | |
388 | } | |
7a3d1328 | 389 | break; |
0133c199 | 390 | default: |
8c9ae521 | 391 | /* |
6181537c DG |
392 | * We should not be here since lttng_enable_event should have |
393 | * failed on the event type. | |
8c9ae521 | 394 | */ |
f3ed775e DG |
395 | goto error; |
396 | } | |
8c9ae521 | 397 | goto end; |
f3ed775e DG |
398 | } |
399 | ||
400 | /* Strip event list */ | |
401 | event_name = strtok(opt_event_list, ","); | |
402 | while (event_name != NULL) { | |
6181537c DG |
403 | /* Copy name and type of the event */ |
404 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
405 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
406 | ev.type = opt_event_type; | |
407 | ||
f3ed775e DG |
408 | /* Kernel tracer action */ |
409 | if (opt_kernel) { | |
410 | DBG("Enabling kernel event %s for channel %s", | |
411 | event_name, channel_name); | |
f3ed775e DG |
412 | |
413 | switch (opt_event_type) { | |
7a3d1328 MD |
414 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
415 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
416 | /* Fall-through */ | |
e6ddca71 | 417 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 418 | break; |
7d29a247 | 419 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 420 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 421 | if (ret < 0) { |
cf0e5467 | 422 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
423 | ret = 0; |
424 | goto error; | |
425 | } | |
f3ed775e DG |
426 | break; |
427 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
428 | ret = parse_probe_opts(&ev, opt_function); |
429 | if (ret < 0) { | |
430 | ERR("Unable to parse function probe options"); | |
431 | ret = 0; | |
432 | goto error; | |
433 | } | |
434 | break; | |
435 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
436 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
437 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 438 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 439 | break; |
a54bd42d | 440 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
441 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
442 | "for all syscalls."); | |
f3ed775e | 443 | default: |
1ab1ea0b | 444 | ret = CMD_UNDEFINED; |
f3ed775e DG |
445 | goto error; |
446 | } | |
0cda4f28 | 447 | |
ed7f4083 | 448 | if (opt_loglevel) { |
0cda4f28 MD |
449 | MSG("Kernel loglevels are not supported."); |
450 | ret = CMD_UNDEFINED; | |
451 | goto error; | |
452 | } | |
453 | ||
454 | /* kernel loglevels not implemented */ | |
8005f29a | 455 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 456 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 457 | #if 0 |
e14f64a8 DG |
458 | if (opt_cmd_name != NULL || opt_pid) { |
459 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 460 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
461 | goto error; |
462 | } | |
d78d6610 | 463 | #endif |
6181537c | 464 | |
300b8fd5 MD |
465 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
466 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
467 | |
468 | switch (opt_event_type) { | |
469 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
470 | /* Fall-through */ |
471 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
472 | /* Copy name and type of the event */ |
473 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
474 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
475 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
476 | break; |
477 | case LTTNG_EVENT_PROBE: | |
478 | case LTTNG_EVENT_FUNCTION: | |
479 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
480 | case LTTNG_EVENT_SYSCALL: | |
481 | default: | |
cc62c0c0 | 482 | ERR("Event type not available for user-space tracing"); |
1ab1ea0b | 483 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
484 | goto error; |
485 | } | |
0cda4f28 MD |
486 | |
487 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 488 | if (opt_loglevel) { |
8005f29a MD |
489 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
490 | if (ev.loglevel == -1) { | |
491 | ERR("Unknown loglevel %s", opt_loglevel); | |
300b8fd5 | 492 | ret = -1; |
8005f29a MD |
493 | goto error; |
494 | } | |
22e25b71 MD |
495 | } else { |
496 | ev.loglevel = -1; | |
ed7f4083 | 497 | } |
f3ed775e | 498 | } else { |
e14f64a8 | 499 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 500 | ret = CMD_ERROR; |
f3ed775e DG |
501 | goto error; |
502 | } | |
503 | ||
6181537c | 504 | ret = lttng_enable_event(handle, &ev, channel_name); |
ae856491 | 505 | if (ret < 0) { |
42224349 DG |
506 | /* Turn ret to positive value to handle the positive error code */ |
507 | switch (-ret) { | |
508 | case LTTCOMM_KERN_EVENT_EXIST: | |
509 | WARN("Kernel event %s already enabled (channel %s, session %s)", | |
510 | event_name, channel_name, session_name); | |
511 | break; | |
512 | default: | |
513 | ERR("Event %s: %s (channel %s, session %s)", event_name, | |
514 | lttng_strerror(ret), channel_name, session_name); | |
515 | break; | |
516 | } | |
ae856491 DG |
517 | warn = 1; |
518 | } else { | |
6181537c DG |
519 | MSG("%s event %s created in channel %s", |
520 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
521 | } | |
522 | ||
f3ed775e DG |
523 | /* Next event */ |
524 | event_name = strtok(NULL, ","); | |
525 | } | |
526 | ||
8c9ae521 | 527 | end: |
f3ed775e | 528 | error: |
ae856491 DG |
529 | if (warn) { |
530 | ret = CMD_WARNING; | |
531 | } | |
b73d0b29 MD |
532 | if (opt_channel_name == NULL) { |
533 | free(channel_name); | |
534 | } | |
cd80958d DG |
535 | lttng_destroy_handle(handle); |
536 | ||
f3ed775e DG |
537 | return ret; |
538 | } | |
539 | ||
540 | /* | |
6181537c | 541 | * Add event to trace session |
f3ed775e DG |
542 | */ |
543 | int cmd_enable_events(int argc, const char **argv) | |
544 | { | |
ca1c3607 | 545 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 546 | static poptContext pc; |
cd80958d | 547 | char *session_name = NULL; |
f3ed775e DG |
548 | |
549 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
550 | poptReadDefaultConfig(pc, 0); | |
551 | ||
552 | /* Default event type */ | |
7a3d1328 | 553 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
554 | |
555 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
556 | switch (opt) { | |
557 | case OPT_HELP: | |
ca1c3607 | 558 | usage(stdout); |
f3ed775e | 559 | goto end; |
f3ed775e | 560 | case OPT_TRACEPOINT: |
e6ddca71 | 561 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 562 | break; |
cf0e5467 | 563 | case OPT_PROBE: |
7d29a247 | 564 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
565 | break; |
566 | case OPT_FUNCTION: | |
567 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
568 | break; |
569 | case OPT_FUNCTION_ENTRY: | |
570 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 571 | break; |
a54bd42d MD |
572 | case OPT_SYSCALL: |
573 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 574 | break; |
eeac7d46 MD |
575 | case OPT_USERSPACE: |
576 | opt_userspace = 1; | |
eeac7d46 | 577 | break; |
0cda4f28 | 578 | case OPT_LOGLEVEL: |
8005f29a | 579 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
580 | opt_loglevel = poptGetOptArg(pc); |
581 | break; | |
582 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 583 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 584 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 585 | break; |
679b4943 SM |
586 | case OPT_LIST_OPTIONS: |
587 | list_cmd_options(stdout, long_options); | |
679b4943 | 588 | goto end; |
f3ed775e DG |
589 | default: |
590 | usage(stderr); | |
591 | ret = CMD_UNDEFINED; | |
592 | goto end; | |
593 | } | |
594 | } | |
595 | ||
596 | opt_event_list = (char*) poptGetArg(pc); | |
597 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
598 | ERR("Missing event name(s).\n"); | |
599 | usage(stderr); | |
ca1c3607 | 600 | ret = CMD_ERROR; |
f3ed775e DG |
601 | goto end; |
602 | } | |
603 | ||
cd80958d DG |
604 | if (!opt_session_name) { |
605 | session_name = get_session_name(); | |
606 | if (session_name == NULL) { | |
ca1c3607 | 607 | ret = CMD_ERROR; |
cd80958d DG |
608 | goto end; |
609 | } | |
610 | } else { | |
611 | session_name = opt_session_name; | |
612 | } | |
613 | ||
614 | ret = enable_events(session_name); | |
f3ed775e DG |
615 | |
616 | end: | |
cd80958d DG |
617 | if (opt_session_name == NULL) { |
618 | free(session_name); | |
619 | } | |
620 | ||
ca1c3607 | 621 | poptFreeContext(pc); |
f3ed775e DG |
622 | return ret; |
623 | } |