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 | 156 | fprintf(ofp, " --filter \'expression\'\n"); |
ee8ccafa MD |
157 | fprintf(ofp, " Filter expression on event fields and context.\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"); | |
ee8ccafa MD |
178 | fprintf(ofp, " the '\\' character. Wildcard match any sequence of,\n"); |
179 | fprintf(ofp, " characters including an empty sub-string (match 0 or\n"); | |
180 | fprintf(ofp, " more characters).\n"); | |
181 | fprintf(ofp, "\n"); | |
182 | fprintf(ofp, " Context information can be used for filtering. The\n"); | |
183 | fprintf(ofp, " examples below show usage of context filtering on\n"); | |
184 | fprintf(ofp, " process name (with a wildcard), process ID range, and\n"); | |
185 | fprintf(ofp, " unique thread ID for filtering. The process and\n"); | |
186 | fprintf(ofp, " thread ID of running applications can be found under\n"); | |
187 | fprintf(ofp, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n"); | |
188 | fprintf(ofp, "\n"); | |
189 | fprintf(ofp, " '$ctx.procname == \"demo*\"'\n"); | |
190 | fprintf(ofp, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n"); | |
191 | fprintf(ofp, " '$ctx.vtid == 1234'\n"); | |
300b8fd5 | 192 | fprintf(ofp, "\n"); |
f3ed775e DG |
193 | } |
194 | ||
0d63dd19 | 195 | /* |
6181537c | 196 | * Parse probe options. |
0d63dd19 | 197 | */ |
cf0e5467 | 198 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 DG |
199 | { |
200 | int ret; | |
8ff0bbd0 | 201 | char s_hex[19]; |
0d63dd19 DG |
202 | char name[LTTNG_SYMBOL_NAME_LEN]; |
203 | ||
204 | if (opt == NULL) { | |
205 | ret = -1; | |
8f0d098b | 206 | goto end; |
0d63dd19 DG |
207 | } |
208 | ||
209 | /* Check for symbol+offset */ | |
8ff0bbd0 | 210 | ret = sscanf(opt, "%[^'+']+%s", name, s_hex); |
0d63dd19 | 211 | if (ret == 2) { |
7d29a247 | 212 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 213 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 214 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 215 | if (*s_hex == '\0') { |
8ff0bbd0 | 216 | ERR("Invalid probe offset %s", s_hex); |
0d63dd19 | 217 | ret = -1; |
8f0d098b | 218 | goto end; |
0d63dd19 | 219 | } |
8ff0bbd0 | 220 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 221 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 222 | ev->attr.probe.addr = 0; |
8f0d098b MD |
223 | goto end; |
224 | } | |
225 | ||
226 | /* Check for symbol */ | |
227 | if (isalpha(name[0])) { | |
228 | ret = sscanf(opt, "%s", name); | |
229 | if (ret == 1) { | |
230 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 231 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
232 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
233 | ev->attr.probe.offset = 0; | |
234 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
235 | ev->attr.probe.addr = 0; | |
236 | goto end; | |
237 | } | |
0d63dd19 DG |
238 | } |
239 | ||
240 | /* Check for address */ | |
8ff0bbd0 | 241 | ret = sscanf(opt, "%s", s_hex); |
0d63dd19 | 242 | if (ret > 0) { |
9d035200 | 243 | if (*s_hex == '\0') { |
8ff0bbd0 | 244 | ERR("Invalid probe address %s", s_hex); |
0d63dd19 | 245 | ret = -1; |
8f0d098b | 246 | goto end; |
0d63dd19 | 247 | } |
8ff0bbd0 | 248 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 249 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
250 | ev->attr.probe.offset = 0; |
251 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 252 | goto end; |
0d63dd19 DG |
253 | } |
254 | ||
255 | /* No match */ | |
256 | ret = -1; | |
257 | ||
8f0d098b | 258 | end: |
0d63dd19 DG |
259 | return ret; |
260 | } | |
261 | ||
8005f29a | 262 | /* |
0c8477c8 | 263 | * Maps loglevel from string to value |
8005f29a MD |
264 | */ |
265 | static | |
46839cc2 | 266 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 267 | { |
46839cc2 MD |
268 | int i = 0; |
269 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
270 | ||
e051e07c DG |
271 | /* |
272 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
273 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
274 | */ | |
275 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
276 | str[i] = toupper(inputstr[i]); |
277 | i++; | |
278 | } | |
279 | str[i] = '\0'; | |
280 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
281 | return LTTNG_LOGLEVEL_EMERG; | |
282 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
283 | return LTTNG_LOGLEVEL_ALERT; | |
284 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
285 | return LTTNG_LOGLEVEL_CRIT; | |
286 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
287 | return LTTNG_LOGLEVEL_ERR; | |
288 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
289 | return LTTNG_LOGLEVEL_WARNING; | |
290 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
291 | return LTTNG_LOGLEVEL_NOTICE; | |
292 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
293 | return LTTNG_LOGLEVEL_INFO; | |
294 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
295 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
296 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
297 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
298 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
299 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
300 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
301 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
302 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
303 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
304 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
305 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
306 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
307 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
308 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
309 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
310 | } else { |
311 | return -1; | |
312 | } | |
313 | } | |
314 | ||
f3ed775e | 315 | /* |
6181537c | 316 | * Enabling event using the lttng API. |
f3ed775e | 317 | */ |
cd80958d | 318 | static int enable_events(char *session_name) |
f3ed775e | 319 | { |
ae856491 | 320 | int err, ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 321 | char *event_name, *channel_name = NULL; |
f3ed775e | 322 | struct lttng_event ev; |
7d29a247 | 323 | struct lttng_domain dom; |
f3ed775e | 324 | |
441c16a7 MD |
325 | memset(&ev, 0, sizeof(ev)); |
326 | memset(&dom, 0, sizeof(dom)); | |
327 | ||
53a80697 MD |
328 | if (opt_kernel) { |
329 | if (opt_filter) { | |
330 | ERR("Filter not implement for kernel tracing yet"); | |
331 | ret = CMD_ERROR; | |
332 | goto error; | |
333 | } | |
334 | } | |
335 | ||
7d29a247 DG |
336 | /* Create lttng domain */ |
337 | if (opt_kernel) { | |
338 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 339 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 340 | } else if (opt_userspace) { |
2bdd86d4 | 341 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 342 | /* Default. */ |
8692d4e5 | 343 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
6181537c | 344 | } else { |
e14f64a8 | 345 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 346 | ret = CMD_ERROR; |
6181537c | 347 | goto error; |
2bdd86d4 | 348 | } |
7d29a247 | 349 | |
ae856491 DG |
350 | if (opt_channel_name == NULL) { |
351 | err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); | |
352 | if (err < 0) { | |
353 | ret = CMD_FATAL; | |
354 | goto error; | |
355 | } | |
356 | } else { | |
357 | channel_name = opt_channel_name; | |
358 | } | |
359 | ||
cd80958d DG |
360 | handle = lttng_create_handle(session_name, &dom); |
361 | if (handle == NULL) { | |
362 | ret = -1; | |
363 | goto error; | |
364 | } | |
1aef21b6 | 365 | |
cd80958d | 366 | if (opt_enable_all) { |
8c9ae521 | 367 | /* Default setup for enable all */ |
75e8c5ab MD |
368 | if (opt_kernel) { |
369 | ev.type = opt_event_type; | |
370 | ev.name[0] = '\0'; | |
300b8fd5 MD |
371 | /* kernel loglevels not implemented */ |
372 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
373 | } else { |
374 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
375 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
376 | ev.loglevel_type = opt_loglevel_type; |
377 | if (opt_loglevel) { | |
378 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
379 | if (ev.loglevel == -1) { | |
380 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 381 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
382 | goto error; |
383 | } | |
22e25b71 MD |
384 | } else { |
385 | ev.loglevel = -1; | |
300b8fd5 | 386 | } |
75e8c5ab | 387 | } |
8c9ae521 | 388 | |
025faf73 DG |
389 | if (!opt_filter) { |
390 | ret = lttng_enable_event(handle, &ev, channel_name); | |
391 | if (ret < 0) { | |
392 | switch (-ret) { | |
393 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
394 | WARN("Kernel events already enabled (channel %s, session %s)", | |
395 | channel_name, session_name); | |
396 | break; | |
397 | default: | |
398 | ERR("Events: %s (channel %s, session %s)", | |
399 | lttng_strerror(ret), channel_name, session_name); | |
400 | break; | |
401 | } | |
402 | goto end; | |
42224349 | 403 | } |
8c9ae521 | 404 | |
025faf73 DG |
405 | switch (opt_event_type) { |
406 | case LTTNG_EVENT_TRACEPOINT: | |
407 | if (opt_loglevel) { | |
408 | MSG("All %s tracepoints are enabled in channel %s for loglevel %s", | |
409 | opt_kernel ? "kernel" : "UST", channel_name, | |
410 | opt_loglevel); | |
411 | } else { | |
412 | MSG("All %s tracepoints are enabled in channel %s", | |
413 | opt_kernel ? "kernel" : "UST", channel_name); | |
57064ada | 414 | |
025faf73 DG |
415 | } |
416 | break; | |
417 | case LTTNG_EVENT_SYSCALL: | |
418 | if (opt_kernel) { | |
419 | MSG("All kernel system calls are enabled in channel %s", | |
420 | channel_name); | |
421 | } | |
422 | break; | |
423 | case LTTNG_EVENT_ALL: | |
424 | if (opt_loglevel) { | |
425 | MSG("All %s events are enabled in channel %s for loglevel %s", | |
426 | opt_kernel ? "kernel" : "UST", channel_name, | |
427 | opt_loglevel); | |
428 | } else { | |
429 | MSG("All %s events are enabled in channel %s", | |
430 | opt_kernel ? "kernel" : "UST", channel_name); | |
431 | } | |
432 | break; | |
433 | default: | |
434 | /* | |
435 | * We should not be here since lttng_enable_event should have | |
436 | * failed on the event type. | |
437 | */ | |
438 | goto error; | |
57064ada | 439 | } |
f3ed775e | 440 | } |
025faf73 DG |
441 | if (opt_filter) { |
442 | ret = lttng_enable_event_with_filter(handle, &ev, channel_name, | |
16363652 DG |
443 | opt_filter); |
444 | if (ret < 0) { | |
445 | switch (-ret) { | |
446 | case LTTNG_ERR_FILTER_EXIST: | |
ff7ef7b8 | 447 | WARN("Filter on events is already enabled" |
16363652 DG |
448 | " (channel %s, session %s)", |
449 | channel_name, session_name); | |
450 | break; | |
ff7ef7b8 DG |
451 | case LTTNG_ERR_FILTER_INVAL: |
452 | case LTTNG_ERR_FILTER_NOMEM: | |
16363652 | 453 | default: |
85711340 | 454 | ERR("%s", lttng_strerror(ret)); |
16363652 DG |
455 | break; |
456 | } | |
457 | goto error; | |
458 | } else { | |
459 | MSG("Filter '%s' successfully set", opt_filter); | |
460 | } | |
461 | } | |
8c9ae521 | 462 | goto end; |
f3ed775e DG |
463 | } |
464 | ||
465 | /* Strip event list */ | |
466 | event_name = strtok(opt_event_list, ","); | |
467 | while (event_name != NULL) { | |
6181537c DG |
468 | /* Copy name and type of the event */ |
469 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
470 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
471 | ev.type = opt_event_type; | |
472 | ||
f3ed775e DG |
473 | /* Kernel tracer action */ |
474 | if (opt_kernel) { | |
475 | DBG("Enabling kernel event %s for channel %s", | |
476 | event_name, channel_name); | |
f3ed775e DG |
477 | |
478 | switch (opt_event_type) { | |
7a3d1328 MD |
479 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
480 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
481 | /* Fall-through */ | |
e6ddca71 | 482 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 483 | break; |
7d29a247 | 484 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 485 | ret = parse_probe_opts(&ev, opt_probe); |
0d63dd19 | 486 | if (ret < 0) { |
cf0e5467 | 487 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
488 | ret = 0; |
489 | goto error; | |
490 | } | |
f3ed775e DG |
491 | break; |
492 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b MD |
493 | ret = parse_probe_opts(&ev, opt_function); |
494 | if (ret < 0) { | |
495 | ERR("Unable to parse function probe options"); | |
496 | ret = 0; | |
497 | goto error; | |
498 | } | |
499 | break; | |
500 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
501 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
502 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 503 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 504 | break; |
a54bd42d | 505 | case LTTNG_EVENT_SYSCALL: |
6181537c DG |
506 | MSG("per-syscall selection not supported yet. Use \"-a\" " |
507 | "for all syscalls."); | |
f3ed775e | 508 | default: |
1ab1ea0b | 509 | ret = CMD_UNDEFINED; |
f3ed775e DG |
510 | goto error; |
511 | } | |
0cda4f28 | 512 | |
ed7f4083 | 513 | if (opt_loglevel) { |
0cda4f28 | 514 | MSG("Kernel loglevels are not supported."); |
4ce78777 | 515 | ret = CMD_UNSUPPORTED; |
0cda4f28 MD |
516 | goto error; |
517 | } | |
518 | ||
519 | /* kernel loglevels not implemented */ | |
8005f29a | 520 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 521 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 522 | #if 0 |
e14f64a8 DG |
523 | if (opt_cmd_name != NULL || opt_pid) { |
524 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 525 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
526 | goto error; |
527 | } | |
d78d6610 | 528 | #endif |
6181537c | 529 | |
300b8fd5 MD |
530 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
531 | channel_name, opt_loglevel ? : "<all>"); | |
2bdd86d4 MD |
532 | |
533 | switch (opt_event_type) { | |
534 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
535 | /* Fall-through */ |
536 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
537 | /* Copy name and type of the event */ |
538 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
539 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
540 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
541 | break; |
542 | case LTTNG_EVENT_PROBE: | |
543 | case LTTNG_EVENT_FUNCTION: | |
544 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
545 | case LTTNG_EVENT_SYSCALL: | |
546 | default: | |
cc62c0c0 | 547 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 548 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
549 | goto error; |
550 | } | |
0cda4f28 MD |
551 | |
552 | ev.loglevel_type = opt_loglevel_type; | |
ed7f4083 | 553 | if (opt_loglevel) { |
8005f29a MD |
554 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
555 | if (ev.loglevel == -1) { | |
556 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 557 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
558 | goto error; |
559 | } | |
22e25b71 MD |
560 | } else { |
561 | ev.loglevel = -1; | |
ed7f4083 | 562 | } |
f3ed775e | 563 | } else { |
e14f64a8 | 564 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
300b8fd5 | 565 | ret = CMD_ERROR; |
f3ed775e DG |
566 | goto error; |
567 | } | |
568 | ||
025faf73 DG |
569 | if (!opt_filter) { |
570 | ret = lttng_enable_event(handle, &ev, channel_name); | |
571 | if (ret < 0) { | |
572 | /* Turn ret to positive value to handle the positive error code */ | |
573 | switch (-ret) { | |
574 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
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 | } | |
583 | warn = 1; | |
584 | } else { | |
585 | MSG("%s event %s created in channel %s", | |
586 | opt_kernel ? "kernel": "UST", event_name, channel_name); | |
42224349 | 587 | } |
6181537c | 588 | } |
025faf73 DG |
589 | |
590 | if (opt_filter) { | |
591 | ret = lttng_enable_event_with_filter(handle, &ev, channel_name, | |
16363652 | 592 | opt_filter); |
53a80697 | 593 | if (ret < 0) { |
7671f53c CB |
594 | switch (-ret) { |
595 | case LTTNG_ERR_FILTER_EXIST: | |
ff7ef7b8 | 596 | WARN("Filter on event %s is already enabled" |
7671f53c CB |
597 | " (channel %s, session %s)", |
598 | event_name, channel_name, session_name); | |
599 | break; | |
ff7ef7b8 DG |
600 | case LTTNG_ERR_FILTER_INVAL: |
601 | case LTTNG_ERR_FILTER_NOMEM: | |
602 | ERR("%s", lttng_strerror(ret)); | |
7671f53c | 603 | default: |
16363652 DG |
604 | ERR("Setting filter for event %s: '%s'", ev.name, |
605 | opt_filter); | |
7671f53c CB |
606 | break; |
607 | } | |
53a80697 | 608 | goto error; |
16363652 DG |
609 | } else { |
610 | MSG("Filter '%s' successfully set", opt_filter); | |
53a80697 MD |
611 | } |
612 | } | |
6181537c | 613 | |
f3ed775e DG |
614 | /* Next event */ |
615 | event_name = strtok(NULL, ","); | |
616 | } | |
617 | ||
8c9ae521 | 618 | end: |
f3ed775e | 619 | error: |
ae856491 DG |
620 | if (warn) { |
621 | ret = CMD_WARNING; | |
622 | } | |
b73d0b29 MD |
623 | if (opt_channel_name == NULL) { |
624 | free(channel_name); | |
625 | } | |
cd80958d DG |
626 | lttng_destroy_handle(handle); |
627 | ||
f3ed775e DG |
628 | return ret; |
629 | } | |
630 | ||
631 | /* | |
6181537c | 632 | * Add event to trace session |
f3ed775e DG |
633 | */ |
634 | int cmd_enable_events(int argc, const char **argv) | |
635 | { | |
ca1c3607 | 636 | int opt, ret = CMD_SUCCESS; |
f3ed775e | 637 | static poptContext pc; |
cd80958d | 638 | char *session_name = NULL; |
de044b7a | 639 | int event_type = -1; |
f3ed775e DG |
640 | |
641 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
642 | poptReadDefaultConfig(pc, 0); | |
643 | ||
644 | /* Default event type */ | |
7a3d1328 | 645 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
646 | |
647 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
648 | switch (opt) { | |
649 | case OPT_HELP: | |
ca1c3607 | 650 | usage(stdout); |
f3ed775e | 651 | goto end; |
f3ed775e | 652 | case OPT_TRACEPOINT: |
e6ddca71 | 653 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 654 | break; |
cf0e5467 | 655 | case OPT_PROBE: |
7d29a247 | 656 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
657 | break; |
658 | case OPT_FUNCTION: | |
659 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
660 | break; |
661 | case OPT_FUNCTION_ENTRY: | |
662 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 663 | break; |
a54bd42d MD |
664 | case OPT_SYSCALL: |
665 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 666 | break; |
eeac7d46 MD |
667 | case OPT_USERSPACE: |
668 | opt_userspace = 1; | |
eeac7d46 | 669 | break; |
0cda4f28 | 670 | case OPT_LOGLEVEL: |
8005f29a | 671 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
672 | opt_loglevel = poptGetOptArg(pc); |
673 | break; | |
674 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 675 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 676 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 677 | break; |
679b4943 SM |
678 | case OPT_LIST_OPTIONS: |
679 | list_cmd_options(stdout, long_options); | |
679b4943 | 680 | goto end; |
53a80697 MD |
681 | case OPT_FILTER: |
682 | break; | |
f3ed775e DG |
683 | default: |
684 | usage(stderr); | |
685 | ret = CMD_UNDEFINED; | |
686 | goto end; | |
687 | } | |
de044b7a DG |
688 | |
689 | /* Validate event type. Multiple event type are not supported. */ | |
690 | if (event_type == -1) { | |
691 | event_type = opt_event_type; | |
692 | } else { | |
693 | if (event_type != opt_event_type) { | |
694 | ERR("Multiple event type not supported."); | |
695 | ret = CMD_ERROR; | |
696 | goto end; | |
697 | } | |
698 | } | |
f3ed775e DG |
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 | } |