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; |
53a80697 | 44 | static char *opt_filter; |
d78d6610 DG |
45 | #if 0 |
46 | /* Not implemented yet */ | |
47 | static char *opt_cmd_name; | |
48 | static pid_t opt_pid; | |
49 | #endif | |
f3ed775e DG |
50 | |
51 | enum { | |
52 | OPT_HELP = 1, | |
f3ed775e | 53 | OPT_TRACEPOINT, |
cf0e5467 | 54 | OPT_PROBE, |
f3ed775e | 55 | OPT_FUNCTION, |
8f0d098b | 56 | OPT_FUNCTION_ENTRY, |
a54bd42d | 57 | OPT_SYSCALL, |
eeac7d46 | 58 | OPT_USERSPACE, |
0cda4f28 MD |
59 | OPT_LOGLEVEL, |
60 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 61 | OPT_LIST_OPTIONS, |
53a80697 | 62 | OPT_FILTER, |
f3ed775e DG |
63 | }; |
64 | ||
cd80958d DG |
65 | static struct lttng_handle *handle; |
66 | ||
f3ed775e DG |
67 | static struct poptOption long_options[] = { |
68 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
69 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 70 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 71 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
72 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
73 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 DG |
74 | #if 0 |
75 | /* Not implemented yet */ | |
40e9d5d3 | 76 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
f3ed775e | 77 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
78 | #else |
79 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
80 | #endif | |
f3ed775e | 81 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 82 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 83 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
84 | #if 0 |
85 | /* | |
86 | * Currently removed from lttng kernel tracer. Removed from | |
87 | * lttng UI to discourage its use. | |
88 | */ | |
40e9d5d3 | 89 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 90 | #endif |
7ebae521 | 91 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
92 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
93 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 94 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 95 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
f3ed775e DG |
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,...] [options] [event_options]\n"); | |
105 | fprintf(ofp, "\n"); | |
106 | fprintf(ofp, " -h, --help Show this help\n"); | |
679b4943 | 107 | fprintf(ofp, " --list-options Simple listing of options\n"); |
27221701 DG |
108 | fprintf(ofp, " -s, --session Apply to session name\n"); |
109 | fprintf(ofp, " -c, --channel Apply to this channel\n"); | |
e08bff8d | 110 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
f3ed775e | 111 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
d78d6610 | 112 | #if 0 |
27221701 | 113 | fprintf(ofp, " -u, --userspace [CMD] Apply to the user-space tracer\n"); |
e14f64a8 DG |
114 | fprintf(ofp, " If no CMD, the domain used is UST global\n"); |
115 | fprintf(ofp, " or else the domain is UST EXEC_NAME\n"); | |
116 | fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n"); | |
d78d6610 | 117 | #else |
27221701 | 118 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
d78d6610 | 119 | #endif |
f3ed775e DG |
120 | fprintf(ofp, "\n"); |
121 | fprintf(ofp, "Event options:\n"); | |
122 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
123 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
124 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
125 | fprintf(ofp, " e.g.:\n"); | |
126 | fprintf(ofp, " \"*\"\n"); | |
127 | fprintf(ofp, " \"app_component:na*\"\n"); | |
8f0d098b | 128 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
129 | fprintf(ofp, " Dynamic probe.\n"); |
130 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
131 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
132 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
133 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
134 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
135 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 136 | #if 0 |
8f0d098b MD |
137 | fprintf(ofp, " --function:entry symbol\n"); |
138 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 139 | #endif |
a54bd42d | 140 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 141 | fprintf(ofp, "\n"); |
300b8fd5 MD |
142 | fprintf(ofp, " --loglevel name\n"); |
143 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); | |
144 | fprintf(ofp, " --loglevel-only name\n"); | |
145 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
146 | fprintf(ofp, "\n"); | |
0c8477c8 MD |
147 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
148 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); | |
149 | fprintf(ofp, " wildcard.\n"); | |
150 | fprintf(ofp, " Available loglevels:\n"); | |
151 | fprintf(ofp, " (higher value is more verbose)\n"); | |
46839cc2 MD |
152 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
153 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
154 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
155 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
156 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
157 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
158 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
159 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); | |
160 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); | |
161 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); | |
162 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); | |
163 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); | |
164 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); | |
165 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); | |
166 | fprintf(ofp, " TRACE_DEBUG = 14\n"); | |
167 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); | |
53a80697 MD |
168 | fprintf(ofp, " --filter \'expression\'\n"); |
169 | fprintf(ofp, " Filter expression on event fields,\n"); | |
170 | fprintf(ofp, " event recording depends on evaluation.\n"); | |
300b8fd5 | 171 | fprintf(ofp, "\n"); |
f3ed775e DG |
172 | } |
173 | ||
0d63dd19 | 174 | /* |
6181537c | 175 | * Parse probe options. |
0d63dd19 | 176 | */ |
cf0e5467 | 177 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
178 | { |
179 | int ret; | |
8ff0bbd0 | 180 | char s_hex[19]; |
0d63dd19 DG |
181 | char name[LTTNG_SYMBOL_NAME_LEN]; |
182 | ||
183 | if (opt == NULL) { | |
184 | ret = -1; | |
8f0d098b | 185 | goto end; |
0d63dd19 DG |
186 | } |
187 | ||
188 | /* Check for symbol+offset */ | |
8ff0bbd0 | 189 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 190 | if (ret == 2) { |
7d29a247 | 191 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 192 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 193 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
194 | if (strlen(s_hex) == 0) { |
195 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 196 | ret = -1; |
8f0d098b | 197 | goto end; |
0d63dd19 | 198 | } |
8ff0bbd0 | 199 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 200 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 201 | ev->attr.probe.addr = 0; |
8f0d098b MD |
202 | goto end; |
203 | } | |
204 | ||
205 | /* Check for symbol */ | |
206 | if (isalpha(name[0])) { | |
207 | ret = sscanf(opt, "%s", name); | |
208 | if (ret == 1) { | |
209 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 210 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
211 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
212 | ev->attr.probe.offset = 0; | |
213 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
214 | ev->attr.probe.addr = 0; | |
215 | goto end; | |
216 | } | |
0d63dd19 DG |
217 | } |
218 | ||
219 | /* Check for address */ | |
8ff0bbd0 | 220 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 221 | if (ret > 0) { |
8ff0bbd0 DG |
222 | if (strlen(s_hex) == 0) { |
223 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 224 | ret = -1; |
8f0d098b | 225 | goto end; |
0d63dd19 | 226 | } |
8ff0bbd0 | 227 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 228 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
229 | ev->attr.probe.offset = 0; |
230 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 231 | goto end; |
0d63dd19 DG |
232 | } |
233 | ||
234 | /* No match */ | |
235 | ret = -1; | |
236 | ||
8f0d098b | 237 | end: |
0d63dd19 DG |
238 | return ret; |
239 | } | |
240 | ||
8005f29a | 241 | /* |
0c8477c8 | 242 | * Maps loglevel from string to value |
8005f29a MD |
243 | */ |
244 | static | |
46839cc2 | 245 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 246 | { |
46839cc2 MD |
247 | int i = 0; |
248 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
249 | ||
250 | while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) { | |
251 | str[i] = toupper(inputstr[i]); | |
252 | i++; | |
253 | } | |
254 | str[i] = '\0'; | |
255 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
256 | return LTTNG_LOGLEVEL_EMERG; | |
257 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
258 | return LTTNG_LOGLEVEL_ALERT; | |
259 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
260 | return LTTNG_LOGLEVEL_CRIT; | |
261 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
262 | return LTTNG_LOGLEVEL_ERR; | |
263 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
264 | return LTTNG_LOGLEVEL_WARNING; | |
265 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
266 | return LTTNG_LOGLEVEL_NOTICE; | |
267 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
268 | return LTTNG_LOGLEVEL_INFO; | |
269 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
270 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
271 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
272 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
273 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
274 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
275 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
276 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
277 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
278 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
279 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
280 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
281 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
282 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
283 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
284 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
285 | } else { |
286 | return -1; | |
287 | } | |
288 | } | |
289 | ||
f3ed775e | 290 | /* |
6181537c | 291 | * Enabling event using the lttng API. |
f3ed775e | 292 | */ |
cd80958d | 293 | static int enable_events(char *session_name) |
f3ed775e | 294 | { |
ae856491 | 295 | int err, ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 296 | char *event_name, *channel_name = NULL; |
f3ed775e | 297 | struct lttng_event ev; |
7d29a247 | 298 | struct lttng_domain dom; |
f3ed775e | 299 | |
441c16a7 MD |
300 | memset(&ev, 0, sizeof(ev)); |
301 | memset(&dom, 0, sizeof(dom)); | |
302 | ||
53a80697 MD |
303 | if (opt_kernel) { |
304 | if (opt_filter) { | |
305 | ERR("Filter not implement for kernel tracing yet"); | |
306 | ret = CMD_ERROR; | |
307 | goto error; | |
308 | } | |
309 | } | |
310 | ||
7d29a247 DG |
311 | /* Create lttng domain */ |
312 | if (opt_kernel) { | |
313 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 314 | } else if (opt_userspace) { |
2bdd86d4 | 315 | dom.type = LTTNG_DOMAIN_UST; |
6181537c | 316 | } else { |
e14f64a8 | 317 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 318 | ret = CMD_ERROR; |
6181537c | 319 | goto error; |
2bdd86d4 | 320 | } |
7d29a247 | 321 | |
ae856491 DG |
322 | if (opt_channel_name == NULL) { |
323 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
324 | if (err < 0) { | |
325 | ret = CMD_FATAL; | |
326 | goto error; | |
327 | } | |
328 | } else { | |
329 | channel_name = opt_channel_name; | |
330 | } | |
331 | ||
cd80958d DG |
332 | handle = lttng_create_handle(session_name, &dom); |
333 | if (handle == NULL) { | |
334 | ret = -1; | |
335 | goto error; | |
336 | } | |
1aef21b6 | 337 | |
cd80958d | 338 | if (opt_enable_all) { |
8c9ae521 | 339 | /* Default setup for enable all */ |
75e8c5ab MD |
340 | if (opt_kernel) { |
341 | ev.type = opt_event_type; | |
342 | ev.name[0] = '\0'; | |
300b8fd5 MD |
343 | /* kernel loglevels not implemented */ |
344 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
345 | } else { |
346 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
347 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
348 | ev.loglevel_type = opt_loglevel_type; |
349 | if (opt_loglevel) { | |
350 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
351 | if (ev.loglevel == -1) { | |
352 | ERR("Unknown loglevel %s", opt_loglevel); | |
353 | ret = -1; | |
354 | goto error; | |
355 | } | |
22e25b71 MD |
356 | } else { |
357 | ev.loglevel = -1; | |
300b8fd5 | 358 | } |
75e8c5ab | 359 | } |
8c9ae521 DG |
360 | |
361 | ret = lttng_enable_event(handle, &ev, channel_name); | |
362 | if (ret < 0) { | |
42224349 DG |
363 | switch (-ret) { |
364 | case LTTCOMM_KERN_EVENT_EXIST: | |
365 | WARN("Kernel events already enabled (channel %s, session %s)", | |
366 | channel_name, session_name); | |
6d805133 | 367 | break; |
42224349 | 368 | default: |
a6de644c | 369 | ERR("Events: %s (channel %s, session %s)", |
42224349 DG |
370 | lttng_strerror(ret), channel_name, session_name); |
371 | break; | |
372 | } | |
6d805133 | 373 | goto end; |
8c9ae521 | 374 | } |
53a80697 MD |
375 | if (opt_filter) { |
376 | ret = lttng_set_event_filter(handle, ev.name, channel_name, | |
377 | opt_filter); | |
378 | if (ret < 0) { | |
379 | ERR("Error setting filter"); | |
380 | ret = -1; | |
381 | goto error; | |
382 | } | |
383 | } | |
8c9ae521 | 384 | |
0133c199 MD |
385 | switch (opt_event_type) { |
386 | case LTTNG_EVENT_TRACEPOINT: | |
57064ada MD |
387 | if (opt_loglevel) { |
388 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", | |
389 | opt_kernel ? "kernel" : "UST", channel_name, | |
390 | opt_loglevel); | |
391 | } else { | |
392 | MSG("All %s tracepoints are enabled in channel %s", | |
393 | opt_kernel ? "kernel" : "UST", channel_name); | |
394 | ||
395 | } | |
0133c199 | 396 | break; |
a54bd42d | 397 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 398 | if (opt_kernel) { |
8c9ae521 DG |
399 | MSG("All kernel system calls are enabled in channel %s", |
400 | channel_name); | |
c93d9daf | 401 | } |
0133c199 | 402 | break; |
7a3d1328 | 403 | case LTTNG_EVENT_ALL: |
57064ada MD |
404 | if (opt_loglevel) { |
405 | MSG("All %s events are enabled in channel %s for loglevel %s", | |
406 | opt_kernel ? "kernel" : "UST", channel_name, | |
407 | opt_loglevel); | |
408 | } else { | |
409 | MSG("All %s events are enabled in channel %s", | |
410 | opt_kernel ? "kernel" : "UST", channel_name); | |
411 | } | |
7a3d1328 | 412 | break; |
0133c199 | 413 | default: |
8c9ae521 | 414 | /* |
6181537c DG |
415 | * We should not be here since lttng_enable_event should have |
416 | * failed on the event type. | |
8c9ae521 | 417 | */ |
f3ed775e DG |
418 | goto error; |
419 | } | |
8c9ae521 | 420 | goto end; |
f3ed775e DG |
421 | } |
422 | ||
423 | /* Strip event list */ | |
424 | event_name = strtok(opt_event_list, ","); | |
425 | while (event_name != NULL) { | |
6181537c DG |
426 | /* Copy name and type of the event */ |
427 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
428 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
429 | ev.type = opt_event_type; | |
430 | ||
f3ed775e DG |
431 | /* Kernel tracer action */ |
432 | if (opt_kernel) { | |
433 | DBG("Enabling kernel event %s for channel %s", | |
434 | event_name, channel_name); | |
f3ed775e DG |
435 | |
436 | switch (opt_event_type) { | |
7a3d1328 MD |
437 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
438 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
439 | /* Fall-through */ | |
e6ddca71 | 440 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 441 | break; |
7d29a247 | 442 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 443 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 444 | if (ret < 0) { |
cf0e5467 | 445 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
446 | ret = 0; |
447 | goto error; | |
448 | } | |
f3ed775e DG |
449 | break; |
450 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
451 | ret = parse_probe_opts(&ev, opt_function); |
452 | if (ret < 0) { | |
453 | ERR("Unable to parse function probe options"); | |
454 | ret = 0; | |
455 | goto error; | |
456 | } | |
457 | break; | |
458 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
459 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
460 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 461 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 462 | break; |
a54bd42d | 463 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
464 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
465 | "for all syscalls."); | |
f3ed775e | 466 | default: |
1ab1ea0b | 467 | ret = CMD_UNDEFINED; |
f3ed775e DG |
468 | goto error; |
469 | } | |
0cda4f28 | 470 | |
ed7f4083 | 471 | if (opt_loglevel) { |
0cda4f28 MD |
472 | MSG("Kernel loglevels are not supported."); |
473 | ret = CMD_UNDEFINED; | |
474 | goto error; | |
475 | } | |
476 | ||
477 | /* kernel loglevels not implemented */ | |
8005f29a | 478 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 479 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 480 | #if 0 |
e14f64a8 DG |
481 | if (opt_cmd_name != NULL || opt_pid) { |
482 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 483 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
484 | goto error; |
485 | } | |
d78d6610 | 486 | #endif |
6181537c | 487 | |
300b8fd5 MD |
488 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
489 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
490 | |
491 | switch (opt_event_type) { | |
492 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
493 | /* Fall-through */ |
494 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
495 | /* Copy name and type of the event */ |
496 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
497 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
498 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
499 | break; |
500 | case LTTNG_EVENT_PROBE: | |
501 | case LTTNG_EVENT_FUNCTION: | |
502 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
503 | case LTTNG_EVENT_SYSCALL: | |
504 | default: | |
cc62c0c0 | 505 | ERR("Event type not available for user-space tracing"); |
1ab1ea0b | 506 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
507 | goto error; |
508 | } | |
0cda4f28 MD |
509 | |
510 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 511 | if (opt_loglevel) { |
8005f29a MD |
512 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
513 | if (ev.loglevel == -1) { | |
514 | ERR("Unknown loglevel %s", opt_loglevel); | |
300b8fd5 | 515 | ret = -1; |
8005f29a MD |
516 | goto error; |
517 | } | |
22e25b71 MD |
518 | } else { |
519 | ev.loglevel = -1; | |
ed7f4083 | 520 | } |
f3ed775e | 521 | } else { |
e14f64a8 | 522 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 523 | ret = CMD_ERROR; |
f3ed775e DG |
524 | goto error; |
525 | } | |
526 | ||
6181537c | 527 | ret = lttng_enable_event(handle, &ev, channel_name); |
ae856491 | 528 | if (ret < 0) { |
42224349 DG |
529 | /* Turn ret to positive value to handle the positive error code */ |
530 | switch (-ret) { | |
531 | case LTTCOMM_KERN_EVENT_EXIST: | |
532 | WARN("Kernel event %s already enabled (channel %s, session %s)", | |
533 | event_name, channel_name, session_name); | |
534 | break; | |
535 | default: | |
536 | ERR("Event %s: %s (channel %s, session %s)", event_name, | |
537 | lttng_strerror(ret), channel_name, session_name); | |
538 | break; | |
539 | } | |
ae856491 DG |
540 | warn = 1; |
541 | } else { | |
6181537c DG |
542 | MSG("%s event %s created in channel %s", |
543 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
544 | } | |
53a80697 MD |
545 | if (opt_filter) { |
546 | ret = lttng_set_event_filter(handle, ev.name, | |
547 | channel_name, opt_filter); | |
548 | if (ret < 0) { | |
549 | ERR("Error setting filter"); | |
550 | ret = -1; | |
551 | goto error; | |
552 | } | |
553 | } | |
6181537c | 554 | |
f3ed775e DG |
555 | /* Next event */ |
556 | event_name = strtok(NULL, ","); | |
557 | } | |
558 | ||
8c9ae521 | 559 | end: |
f3ed775e | 560 | error: |
ae856491 DG |
561 | if (warn) { |
562 | ret = CMD_WARNING; | |
563 | } | |
b73d0b29 MD |
564 | if (opt_channel_name == NULL) { |
565 | free(channel_name); | |
566 | } | |
cd80958d DG |
567 | lttng_destroy_handle(handle); |
568 | ||
f3ed775e DG |
569 | return ret; |
570 | } | |
571 | ||
572 | /* | |
6181537c | 573 | * Add event to trace session |
f3ed775e DG |
574 | */ |
575 | int cmd_enable_events(int argc, const char **argv) | |
576 | { | |
ca1c3607 | 577 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 578 | static poptContext pc; |
cd80958d | 579 | char *session_name = NULL; |
f3ed775e DG |
580 | |
581 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
582 | poptReadDefaultConfig(pc, 0); | |
583 | ||
584 | /* Default event type */ | |
7a3d1328 | 585 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
586 | |
587 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
588 | switch (opt) { | |
589 | case OPT_HELP: | |
ca1c3607 | 590 | usage(stdout); |
f3ed775e | 591 | goto end; |
f3ed775e | 592 | case OPT_TRACEPOINT: |
e6ddca71 | 593 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 594 | break; |
cf0e5467 | 595 | case OPT_PROBE: |
7d29a247 | 596 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
597 | break; |
598 | case OPT_FUNCTION: | |
599 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
600 | break; |
601 | case OPT_FUNCTION_ENTRY: | |
602 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 603 | break; |
a54bd42d MD |
604 | case OPT_SYSCALL: |
605 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 606 | break; |
eeac7d46 MD |
607 | case OPT_USERSPACE: |
608 | opt_userspace = 1; | |
eeac7d46 | 609 | break; |
0cda4f28 | 610 | case OPT_LOGLEVEL: |
8005f29a | 611 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
612 | opt_loglevel = poptGetOptArg(pc); |
613 | break; | |
614 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 615 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 616 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 617 | break; |
679b4943 SM |
618 | case OPT_LIST_OPTIONS: |
619 | list_cmd_options(stdout, long_options); | |
679b4943 | 620 | goto end; |
53a80697 MD |
621 | case OPT_FILTER: |
622 | break; | |
f3ed775e DG |
623 | default: |
624 | usage(stderr); | |
625 | ret = CMD_UNDEFINED; | |
626 | goto end; | |
627 | } | |
628 | } | |
629 | ||
630 | opt_event_list = (char*) poptGetArg(pc); | |
631 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
632 | ERR("Missing event name(s).\n"); | |
633 | usage(stderr); | |
ca1c3607 | 634 | ret = CMD_ERROR; |
f3ed775e DG |
635 | goto end; |
636 | } | |
637 | ||
cd80958d DG |
638 | if (!opt_session_name) { |
639 | session_name = get_session_name(); | |
640 | if (session_name == NULL) { | |
ca1c3607 | 641 | ret = CMD_ERROR; |
cd80958d DG |
642 | goto end; |
643 | } | |
644 | } else { | |
645 | session_name = opt_session_name; | |
646 | } | |
647 | ||
648 | ret = enable_events(session_name); | |
f3ed775e DG |
649 | |
650 | end: | |
cd80958d DG |
651 | if (opt_session_name == NULL) { |
652 | free(session_name); | |
653 | } | |
654 | ||
ca1c3607 | 655 | poptFreeContext(pc); |
f3ed775e DG |
656 | return ret; |
657 | } |