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 | 74 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
f3ed775e | 75 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 76 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 77 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
78 | #if 0 |
79 | /* | |
80 | * Currently removed from lttng kernel tracer. Removed from | |
81 | * lttng UI to discourage its use. | |
82 | */ | |
40e9d5d3 | 83 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 84 | #endif |
7ebae521 | 85 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
86 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
87 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 88 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 89 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
f3ed775e DG |
90 | {0, 0, 0, 0, 0, 0, 0} |
91 | }; | |
92 | ||
93 | /* | |
94 | * usage | |
95 | */ | |
96 | static void usage(FILE *ofp) | |
97 | { | |
32a6298d | 98 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n"); |
f3ed775e | 99 | fprintf(ofp, "\n"); |
32a6298d | 100 | fprintf(ofp, "Options:\n"); |
f3ed775e | 101 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 102 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d DG |
103 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
104 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); | |
e08bff8d | 105 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
f3ed775e | 106 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
27221701 | 107 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
f3ed775e DG |
108 | fprintf(ofp, "\n"); |
109 | fprintf(ofp, "Event options:\n"); | |
110 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
111 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
112 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
113 | fprintf(ofp, " e.g.:\n"); | |
114 | fprintf(ofp, " \"*\"\n"); | |
115 | fprintf(ofp, " \"app_component:na*\"\n"); | |
8f0d098b | 116 | fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); |
cf0e5467 MD |
117 | fprintf(ofp, " Dynamic probe.\n"); |
118 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
119 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
8f0d098b MD |
120 | fprintf(ofp, " --function [addr | symbol | symbol+offset]\n"); |
121 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
122 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
123 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 124 | #if 0 |
8f0d098b MD |
125 | fprintf(ofp, " --function:entry symbol\n"); |
126 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 127 | #endif |
a54bd42d | 128 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 129 | fprintf(ofp, "\n"); |
300b8fd5 MD |
130 | fprintf(ofp, " --loglevel name\n"); |
131 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); | |
132 | fprintf(ofp, " --loglevel-only name\n"); | |
133 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
134 | fprintf(ofp, "\n"); | |
0c8477c8 MD |
135 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
136 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); | |
137 | fprintf(ofp, " wildcard.\n"); | |
138 | fprintf(ofp, " Available loglevels:\n"); | |
139 | fprintf(ofp, " (higher value is more verbose)\n"); | |
46839cc2 MD |
140 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
141 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
142 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
143 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
144 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
145 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
146 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
147 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); | |
148 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); | |
149 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); | |
150 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); | |
151 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); | |
152 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); | |
153 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); | |
154 | fprintf(ofp, " TRACE_DEBUG = 14\n"); | |
155 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); | |
53a80697 MD |
156 | fprintf(ofp, " --filter \'expression\'\n"); |
157 | fprintf(ofp, " Filter expression on event fields,\n"); | |
158 | fprintf(ofp, " event recording depends on evaluation.\n"); | |
919e300c MD |
159 | fprintf(ofp, " Only specify on first activation of\n"); |
160 | fprintf(ofp, " a given event within a session.\n"); | |
161 | fprintf(ofp, " Filter only allowed when enabling\n"); | |
162 | fprintf(ofp, " events within a session before tracing\n"); | |
9bd578f5 MD |
163 | fprintf(ofp, " is started. If the filter fails to link\n"); |
164 | fprintf(ofp, " with the event within the traced domain,\n"); | |
165 | fprintf(ofp, " the event will be discarded. Currently,\n"); | |
166 | fprintf(ofp, " filter is only implemented for the user-space\n"); | |
167 | fprintf(ofp, " tracer.\n"); | |
168 | fprintf(ofp, " Expression examples:.\n"); | |
169 | fprintf(ofp, " \n"); | |
170 | fprintf(ofp, " 'intfield > 500 && intfield < 503'\n"); | |
171 | fprintf(ofp, " '(stringfield == \"test\" || intfield != 10) && intfield > 33'\n"); | |
172 | fprintf(ofp, " 'doublefield > 1.1 && intfield < 5.3'\n"); | |
173 | fprintf(ofp, " \n"); | |
174 | fprintf(ofp, " Wildcards are allowed at the end of strings:\n"); | |
175 | fprintf(ofp, " 'seqfield1 == \"te*\"'\n"); | |
176 | fprintf(ofp, " In string literals, the escape character is '\\'.\n"); | |
177 | fprintf(ofp, " Use '\\*' for the '*' character, and '\\\\' for\n"); | |
178 | fprintf(ofp, " the '\\' character.\n"); | |
300b8fd5 | 179 | fprintf(ofp, "\n"); |
f3ed775e DG |
180 | } |
181 | ||
0d63dd19 | 182 | /* |
6181537c | 183 | * Parse probe options. |
0d63dd19 | 184 | */ |
cf0e5467 | 185 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
186 | { |
187 | int ret; | |
8ff0bbd0 | 188 | char s_hex[19]; |
0d63dd19 DG |
189 | char name[LTTNG_SYMBOL_NAME_LEN]; |
190 | ||
191 | if (opt == NULL) { | |
192 | ret = -1; | |
8f0d098b | 193 | goto end; |
0d63dd19 DG |
194 | } |
195 | ||
196 | /* Check for symbol+offset */ | |
8ff0bbd0 | 197 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 198 | if (ret == 2) { |
7d29a247 | 199 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 200 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 201 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
8ff0bbd0 DG |
202 | if (strlen(s_hex) == 0) { |
203 | ERR("Invalid probe offset %s", s_hex); | |
0d63dd19 | 204 | ret = -1; |
8f0d098b | 205 | goto end; |
0d63dd19 | 206 | } |
8ff0bbd0 | 207 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 208 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 209 | ev->attr.probe.addr = 0; |
8f0d098b MD |
210 | goto end; |
211 | } | |
212 | ||
213 | /* Check for symbol */ | |
214 | if (isalpha(name[0])) { | |
215 | ret = sscanf(opt, "%s", name); | |
216 | if (ret == 1) { | |
217 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 218 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
219 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
220 | ev->attr.probe.offset = 0; | |
221 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
222 | ev->attr.probe.addr = 0; | |
223 | goto end; | |
224 | } | |
0d63dd19 DG |
225 | } |
226 | ||
227 | /* Check for address */ | |
8ff0bbd0 | 228 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 229 | if (ret > 0) { |
8ff0bbd0 DG |
230 | if (strlen(s_hex) == 0) { |
231 | ERR("Invalid probe address %s", s_hex); | |
0d63dd19 | 232 | ret = -1; |
8f0d098b | 233 | goto end; |
0d63dd19 | 234 | } |
8ff0bbd0 | 235 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 236 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
237 | ev->attr.probe.offset = 0; |
238 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 239 | goto end; |
0d63dd19 DG |
240 | } |
241 | ||
242 | /* No match */ | |
243 | ret = -1; | |
244 | ||
8f0d098b | 245 | end: |
0d63dd19 DG |
246 | return ret; |
247 | } | |
248 | ||
8005f29a | 249 | /* |
0c8477c8 | 250 | * Maps loglevel from string to value |
8005f29a MD |
251 | */ |
252 | static | |
46839cc2 | 253 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 254 | { |
46839cc2 MD |
255 | int i = 0; |
256 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
257 | ||
258 | while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) { | |
259 | str[i] = toupper(inputstr[i]); | |
260 | i++; | |
261 | } | |
262 | str[i] = '\0'; | |
263 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
264 | return LTTNG_LOGLEVEL_EMERG; | |
265 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
266 | return LTTNG_LOGLEVEL_ALERT; | |
267 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
268 | return LTTNG_LOGLEVEL_CRIT; | |
269 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
270 | return LTTNG_LOGLEVEL_ERR; | |
271 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
272 | return LTTNG_LOGLEVEL_WARNING; | |
273 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
274 | return LTTNG_LOGLEVEL_NOTICE; | |
275 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
276 | return LTTNG_LOGLEVEL_INFO; | |
277 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
278 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
279 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
280 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
281 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
282 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
283 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
284 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
285 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
286 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
287 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
288 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
289 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
290 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
291 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
292 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
293 | } else { |
294 | return -1; | |
295 | } | |
296 | } | |
297 | ||
f3ed775e | 298 | /* |
6181537c | 299 | * Enabling event using the lttng API. |
f3ed775e | 300 | */ |
cd80958d | 301 | static int enable_events(char *session_name) |
f3ed775e | 302 | { |
ae856491 | 303 | int err, ret = CMD_SUCCESS, warn = 0; |
911a4811 | 304 | unsigned int event_enabled = 0; |
b73d0b29 | 305 | char *event_name, *channel_name = NULL; |
f3ed775e | 306 | struct lttng_event ev; |
7d29a247 | 307 | struct lttng_domain dom; |
f3ed775e | 308 | |
441c16a7 MD |
309 | memset(&ev, 0, sizeof(ev)); |
310 | memset(&dom, 0, sizeof(dom)); | |
311 | ||
53a80697 MD |
312 | if (opt_kernel) { |
313 | if (opt_filter) { | |
314 | ERR("Filter not implement for kernel tracing yet"); | |
315 | ret = CMD_ERROR; | |
316 | goto error; | |
317 | } | |
318 | } | |
319 | ||
7d29a247 DG |
320 | /* Create lttng domain */ |
321 | if (opt_kernel) { | |
322 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 323 | } else if (opt_userspace) { |
2bdd86d4 | 324 | dom.type = LTTNG_DOMAIN_UST; |
6181537c | 325 | } else { |
e14f64a8 | 326 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 327 | ret = CMD_ERROR; |
6181537c | 328 | goto error; |
2bdd86d4 | 329 | } |
7d29a247 | 330 | |
ae856491 DG |
331 | if (opt_channel_name == NULL) { |
332 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
333 | if (err < 0) { | |
334 | ret = CMD_FATAL; | |
335 | goto error; | |
336 | } | |
337 | } else { | |
338 | channel_name = opt_channel_name; | |
339 | } | |
340 | ||
cd80958d DG |
341 | handle = lttng_create_handle(session_name, &dom); |
342 | if (handle == NULL) { | |
343 | ret = -1; | |
344 | goto error; | |
345 | } | |
1aef21b6 | 346 | |
cd80958d | 347 | if (opt_enable_all) { |
8c9ae521 | 348 | /* Default setup for enable all */ |
75e8c5ab MD |
349 | if (opt_kernel) { |
350 | ev.type = opt_event_type; | |
351 | ev.name[0] = '\0'; | |
300b8fd5 MD |
352 | /* kernel loglevels not implemented */ |
353 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
354 | } else { |
355 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
356 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
357 | ev.loglevel_type = opt_loglevel_type; |
358 | if (opt_loglevel) { | |
359 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
360 | if (ev.loglevel == -1) { | |
361 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 362 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
363 | goto error; |
364 | } | |
22e25b71 MD |
365 | } else { |
366 | ev.loglevel = -1; | |
300b8fd5 | 367 | } |
75e8c5ab | 368 | } |
8c9ae521 | 369 | |
911a4811 DG |
370 | /* Reset flag before enabling a new event. */ |
371 | event_enabled = 0; | |
372 | ||
8c9ae521 DG |
373 | ret = lttng_enable_event(handle, &ev, channel_name); |
374 | if (ret < 0) { | |
42224349 | 375 | switch (-ret) { |
f73fabfd | 376 | case LTTNG_ERR_KERN_EVENT_EXIST: |
42224349 DG |
377 | WARN("Kernel events already enabled (channel %s, session %s)", |
378 | channel_name, session_name); | |
6d805133 | 379 | break; |
42224349 | 380 | default: |
a6de644c | 381 | ERR("Events: %s (channel %s, session %s)", |
42224349 DG |
382 | lttng_strerror(ret), channel_name, session_name); |
383 | break; | |
384 | } | |
6d805133 | 385 | goto end; |
8c9ae521 | 386 | } |
911a4811 | 387 | event_enabled = 1; |
8c9ae521 | 388 | |
0133c199 MD |
389 | switch (opt_event_type) { |
390 | case LTTNG_EVENT_TRACEPOINT: | |
57064ada MD |
391 | if (opt_loglevel) { |
392 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", | |
16363652 DG |
393 | opt_kernel ? "kernel" : "UST", channel_name, |
394 | opt_loglevel); | |
57064ada MD |
395 | } else { |
396 | MSG("All %s tracepoints are enabled in channel %s", | |
16363652 | 397 | opt_kernel ? "kernel" : "UST", channel_name); |
57064ada MD |
398 | |
399 | } | |
0133c199 | 400 | break; |
a54bd42d | 401 | case LTTNG_EVENT_SYSCALL: |
0133c199 | 402 | if (opt_kernel) { |
8c9ae521 DG |
403 | MSG("All kernel system calls are enabled in channel %s", |
404 | channel_name); | |
c93d9daf | 405 | } |
0133c199 | 406 | break; |
7a3d1328 | 407 | case LTTNG_EVENT_ALL: |
57064ada MD |
408 | if (opt_loglevel) { |
409 | MSG("All %s events are enabled in channel %s for loglevel %s", | |
16363652 DG |
410 | opt_kernel ? "kernel" : "UST", channel_name, |
411 | opt_loglevel); | |
57064ada MD |
412 | } else { |
413 | MSG("All %s events are enabled in channel %s", | |
16363652 | 414 | opt_kernel ? "kernel" : "UST", channel_name); |
57064ada | 415 | } |
7a3d1328 | 416 | break; |
0133c199 | 417 | default: |
8c9ae521 | 418 | /* |
6181537c DG |
419 | * We should not be here since lttng_enable_event should have |
420 | * failed on the event type. | |
8c9ae521 | 421 | */ |
f3ed775e DG |
422 | goto error; |
423 | } | |
911a4811 | 424 | if (opt_filter && event_enabled) { |
178191b3 | 425 | ret = lttng_set_event_filter(handle, &ev, channel_name, |
16363652 DG |
426 | opt_filter); |
427 | if (ret < 0) { | |
911a4811 | 428 | fprintf(stderr, "Ret filter: %d\n", ret); |
16363652 DG |
429 | switch (-ret) { |
430 | case LTTNG_ERR_FILTER_EXIST: | |
ff7ef7b8 | 431 | WARN("Filter on events is already enabled" |
16363652 DG |
432 | " (channel %s, session %s)", |
433 | channel_name, session_name); | |
434 | break; | |
ff7ef7b8 DG |
435 | case LTTNG_ERR_FILTER_INVAL: |
436 | case LTTNG_ERR_FILTER_NOMEM: | |
437 | ERR("%s", lttng_strerror(ret)); | |
16363652 DG |
438 | default: |
439 | ERR("Setting filter: '%s'", opt_filter); | |
440 | /* | |
441 | * The event was successfully enabled before so when | |
442 | * failing to set a filter, disable the event. This has | |
443 | * been discussed in bug #343 on why we do that. | |
444 | */ | |
445 | err = lttng_disable_event(handle, ev.name, channel_name); | |
446 | if (err < 0) { | |
447 | ERR("Disabling all events after filter error: %s", | |
448 | lttng_strerror(err)); | |
449 | } else { | |
450 | WARN("All events of channel %s have been disabled due " | |
451 | "to a filter error", channel_name); | |
452 | } | |
453 | break; | |
454 | } | |
455 | goto error; | |
456 | } else { | |
457 | MSG("Filter '%s' successfully set", opt_filter); | |
458 | } | |
459 | } | |
8c9ae521 | 460 | goto end; |
f3ed775e DG |
461 | } |
462 | ||
463 | /* Strip event list */ | |
464 | event_name = strtok(opt_event_list, ","); | |
465 | while (event_name != NULL) { | |
6181537c DG |
466 | /* Copy name and type of the event */ |
467 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
468 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
469 | ev.type = opt_event_type; | |
470 | ||
f3ed775e DG |
471 | /* Kernel tracer action */ |
472 | if (opt_kernel) { | |
473 | DBG("Enabling kernel event %s for channel %s", | |
474 | event_name, channel_name); | |
f3ed775e DG |
475 | |
476 | switch (opt_event_type) { | |
7a3d1328 MD |
477 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
478 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
479 | /* Fall-through */ | |
e6ddca71 | 480 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 481 | break; |
7d29a247 | 482 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 483 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 484 | if (ret < 0) { |
cf0e5467 | 485 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
486 | ret = 0; |
487 | goto error; | |
488 | } | |
f3ed775e DG |
489 | break; |
490 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
491 | ret = parse_probe_opts(&ev, opt_function); |
492 | if (ret < 0) { | |
493 | ERR("Unable to parse function probe options"); | |
494 | ret = 0; | |
495 | goto error; | |
496 | } | |
497 | break; | |
498 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
499 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
500 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 501 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 502 | break; |
a54bd42d | 503 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
504 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
505 | "for all syscalls."); | |
f3ed775e | 506 | default: |
1ab1ea0b | 507 | ret = CMD_UNDEFINED; |
f3ed775e DG |
508 | goto error; |
509 | } | |
0cda4f28 | 510 | |
ed7f4083 | 511 | if (opt_loglevel) { |
0cda4f28 MD |
512 | MSG("Kernel loglevels are not supported."); |
513 | ret = CMD_UNDEFINED; | |
514 | goto error; | |
515 | } | |
516 | ||
517 | /* kernel loglevels not implemented */ | |
8005f29a | 518 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 519 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 520 | #if 0 |
e14f64a8 DG |
521 | if (opt_cmd_name != NULL || opt_pid) { |
522 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 523 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
524 | goto error; |
525 | } | |
d78d6610 | 526 | #endif |
6181537c | 527 | |
300b8fd5 MD |
528 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
529 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
530 | |
531 | switch (opt_event_type) { | |
532 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
533 | /* Fall-through */ |
534 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
535 | /* Copy name and type of the event */ |
536 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
537 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
538 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
539 | break; |
540 | case LTTNG_EVENT_PROBE: | |
541 | case LTTNG_EVENT_FUNCTION: | |
542 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
543 | case LTTNG_EVENT_SYSCALL: | |
544 | default: | |
cc62c0c0 | 545 | ERR("Event type not available for user-space tracing"); |
1ab1ea0b | 546 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
547 | goto error; |
548 | } | |
0cda4f28 MD |
549 | |
550 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 551 | if (opt_loglevel) { |
8005f29a MD |
552 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
553 | if (ev.loglevel == -1) { | |
554 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 555 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
556 | goto error; |
557 | } | |
22e25b71 MD |
558 | } else { |
559 | ev.loglevel = -1; | |
ed7f4083 | 560 | } |
f3ed775e | 561 | } else { |
e14f64a8 | 562 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 563 | ret = CMD_ERROR; |
f3ed775e DG |
564 | goto error; |
565 | } | |
566 | ||
911a4811 DG |
567 | /* Reset flag before enabling a new event. */ |
568 | event_enabled = 0; | |
569 | ||
6181537c | 570 | ret = lttng_enable_event(handle, &ev, channel_name); |
ae856491 | 571 | if (ret < 0) { |
42224349 DG |
572 | /* Turn ret to positive value to handle the positive error code */ |
573 | switch (-ret) { | |
f73fabfd | 574 | case LTTNG_ERR_KERN_EVENT_EXIST: |
42224349 DG |
575 | WARN("Kernel event %s already enabled (channel %s, session %s)", |
576 | event_name, channel_name, session_name); | |
577 | break; | |
578 | default: | |
579 | ERR("Event %s: %s (channel %s, session %s)", event_name, | |
580 | lttng_strerror(ret), channel_name, session_name); | |
581 | break; | |
582 | } | |
ae856491 DG |
583 | warn = 1; |
584 | } else { | |
6181537c DG |
585 | MSG("%s event %s created in channel %s", |
586 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
911a4811 | 587 | event_enabled = 1; |
6181537c | 588 | } |
911a4811 | 589 | if (opt_filter && event_enabled) { |
178191b3 | 590 | ret = lttng_set_event_filter(handle, &ev, channel_name, |
16363652 | 591 | opt_filter); |
53a80697 | 592 | if (ret < 0) { |
7671f53c CB |
593 | switch (-ret) { |
594 | case LTTNG_ERR_FILTER_EXIST: | |
ff7ef7b8 | 595 | WARN("Filter on event %s is already enabled" |
7671f53c CB |
596 | " (channel %s, session %s)", |
597 | event_name, channel_name, session_name); | |
598 | break; | |
ff7ef7b8 DG |
599 | case LTTNG_ERR_FILTER_INVAL: |
600 | case LTTNG_ERR_FILTER_NOMEM: | |
601 | ERR("%s", lttng_strerror(ret)); | |
7671f53c | 602 | default: |
16363652 DG |
603 | ERR("Setting filter for event %s: '%s'", ev.name, |
604 | opt_filter); | |
605 | /* | |
606 | * The event was successfully enabled before so when | |
607 | * failing to set a filter, disable the event. This has | |
608 | * been discussed in bug #343 on why we do that. | |
609 | */ | |
610 | err = lttng_disable_event(handle, ev.name, channel_name); | |
611 | if (err < 0) { | |
612 | ERR("Disabling event %s after filter error: %s", | |
613 | ev.name, lttng_strerror(err)); | |
614 | } else { | |
615 | WARN("Event %s of channel %s has been disabled due " | |
616 | "to a filter error", ev.name, channel_name); | |
617 | } | |
7671f53c CB |
618 | break; |
619 | } | |
53a80697 | 620 | goto error; |
16363652 DG |
621 | } else { |
622 | MSG("Filter '%s' successfully set", opt_filter); | |
53a80697 MD |
623 | } |
624 | } | |
6181537c | 625 | |
f3ed775e DG |
626 | /* Next event */ |
627 | event_name = strtok(NULL, ","); | |
628 | } | |
629 | ||
8c9ae521 | 630 | end: |
f3ed775e | 631 | error: |
ae856491 DG |
632 | if (warn) { |
633 | ret = CMD_WARNING; | |
634 | } | |
b73d0b29 MD |
635 | if (opt_channel_name == NULL) { |
636 | free(channel_name); | |
637 | } | |
cd80958d DG |
638 | lttng_destroy_handle(handle); |
639 | ||
f3ed775e DG |
640 | return ret; |
641 | } | |
642 | ||
643 | /* | |
6181537c | 644 | * Add event to trace session |
f3ed775e DG |
645 | */ |
646 | int cmd_enable_events(int argc, const char **argv) | |
647 | { | |
ca1c3607 | 648 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 649 | static poptContext pc; |
cd80958d | 650 | char *session_name = NULL; |
f3ed775e DG |
651 | |
652 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
653 | poptReadDefaultConfig(pc, 0); | |
654 | ||
655 | /* Default event type */ | |
7a3d1328 | 656 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
657 | |
658 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
659 | switch (opt) { | |
660 | case OPT_HELP: | |
ca1c3607 | 661 | usage(stdout); |
f3ed775e | 662 | goto end; |
f3ed775e | 663 | case OPT_TRACEPOINT: |
e6ddca71 | 664 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 665 | break; |
cf0e5467 | 666 | case OPT_PROBE: |
7d29a247 | 667 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
668 | break; |
669 | case OPT_FUNCTION: | |
670 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
671 | break; |
672 | case OPT_FUNCTION_ENTRY: | |
673 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 674 | break; |
a54bd42d MD |
675 | case OPT_SYSCALL: |
676 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 677 | break; |
eeac7d46 MD |
678 | case OPT_USERSPACE: |
679 | opt_userspace = 1; | |
eeac7d46 | 680 | break; |
0cda4f28 | 681 | case OPT_LOGLEVEL: |
8005f29a | 682 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
683 | opt_loglevel = poptGetOptArg(pc); |
684 | break; | |
685 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 686 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 687 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 688 | break; |
679b4943 SM |
689 | case OPT_LIST_OPTIONS: |
690 | list_cmd_options(stdout, long_options); | |
679b4943 | 691 | goto end; |
53a80697 MD |
692 | case OPT_FILTER: |
693 | break; | |
f3ed775e DG |
694 | default: |
695 | usage(stderr); | |
696 | ret = CMD_UNDEFINED; | |
697 | goto end; | |
698 | } | |
699 | } | |
700 | ||
701 | opt_event_list = (char*) poptGetArg(pc); | |
702 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
703 | ERR("Missing event name(s).\n"); | |
704 | usage(stderr); | |
ca1c3607 | 705 | ret = CMD_ERROR; |
f3ed775e DG |
706 | goto end; |
707 | } | |
708 | ||
cd80958d DG |
709 | if (!opt_session_name) { |
710 | session_name = get_session_name(); | |
711 | if (session_name == NULL) { | |
ca1c3607 | 712 | ret = CMD_ERROR; |
cd80958d DG |
713 | goto end; |
714 | } | |
715 | } else { | |
716 | session_name = opt_session_name; | |
717 | } | |
718 | ||
719 | ret = enable_events(session_name); | |
f3ed775e DG |
720 | |
721 | end: | |
cd80958d DG |
722 | if (opt_session_name == NULL) { |
723 | free(session_name); | |
724 | } | |
725 | ||
ca1c3607 | 726 | poptFreeContext(pc); |
f3ed775e DG |
727 | return ret; |
728 | } |