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 | |
b2064f54 | 19 | #include <assert.h> |
f3ed775e DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
5a0de755 | 27 | #include <inttypes.h> |
8f0d098b | 28 | #include <ctype.h> |
f3ed775e | 29 | |
42224349 | 30 | #include <src/common/sessiond-comm/sessiond-comm.h> |
f3ed775e | 31 | |
89476427 JRJ |
32 | /* Mi dependancy */ |
33 | #include <common/mi-lttng.h> | |
34 | ||
35 | #include "../command.h" | |
36 | ||
8ab7c0d9 MD |
37 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
38 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
39 | #endif | |
40 | ||
f3ed775e DG |
41 | static char *opt_event_list; |
42 | static int opt_event_type; | |
0cda4f28 MD |
43 | static const char *opt_loglevel; |
44 | static int opt_loglevel_type; | |
6181537c | 45 | static int opt_kernel; |
5440dc42 | 46 | static char *opt_session_name; |
f3ed775e | 47 | static int opt_userspace; |
b9dfb167 | 48 | static int opt_jul; |
5cdb6027 | 49 | static int opt_log4j; |
f3ed775e | 50 | static int opt_enable_all; |
cf0e5467 | 51 | static char *opt_probe; |
8f0d098b MD |
52 | static char *opt_function; |
53 | static char *opt_function_entry_symbol; | |
f3ed775e | 54 | static char *opt_channel_name; |
53a80697 | 55 | static char *opt_filter; |
fac3366c | 56 | static char *opt_exclude; |
d78d6610 DG |
57 | #if 0 |
58 | /* Not implemented yet */ | |
59 | static char *opt_cmd_name; | |
60 | static pid_t opt_pid; | |
61 | #endif | |
f3ed775e DG |
62 | |
63 | enum { | |
64 | OPT_HELP = 1, | |
f3ed775e | 65 | OPT_TRACEPOINT, |
cf0e5467 | 66 | OPT_PROBE, |
f3ed775e | 67 | OPT_FUNCTION, |
8f0d098b | 68 | OPT_FUNCTION_ENTRY, |
a54bd42d | 69 | OPT_SYSCALL, |
eeac7d46 | 70 | OPT_USERSPACE, |
0cda4f28 MD |
71 | OPT_LOGLEVEL, |
72 | OPT_LOGLEVEL_ONLY, | |
679b4943 | 73 | OPT_LIST_OPTIONS, |
53a80697 | 74 | OPT_FILTER, |
fac3366c | 75 | OPT_EXCLUDE, |
f3ed775e DG |
76 | }; |
77 | ||
cd80958d | 78 | static struct lttng_handle *handle; |
89476427 | 79 | static struct mi_writer *writer; |
cd80958d | 80 | |
f3ed775e DG |
81 | static struct poptOption long_options[] = { |
82 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
83 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 84 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e14f64a8 | 85 | {"all", 'a', POPT_ARG_VAL, &opt_enable_all, 1, 0, 0}, |
f3ed775e DG |
86 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
87 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 88 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
b9dfb167 | 89 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
5cdb6027 | 90 | {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0}, |
f3ed775e | 91 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, |
7ebae521 | 92 | {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, |
40e9d5d3 | 93 | {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, |
b213d387 MD |
94 | #if 0 |
95 | /* | |
96 | * Currently removed from lttng kernel tracer. Removed from | |
97 | * lttng UI to discourage its use. | |
98 | */ | |
40e9d5d3 | 99 | {"function:entry", 0, POPT_ARG_STRING, &opt_function_entry_symbol, OPT_FUNCTION_ENTRY, 0, 0}, |
b213d387 | 100 | #endif |
7ebae521 | 101 | {"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0}, |
0cda4f28 MD |
102 | {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, |
103 | {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, | |
679b4943 | 104 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
53a80697 | 105 | {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, |
fac3366c | 106 | {"exclude", 'x', POPT_ARG_STRING, &opt_exclude, OPT_EXCLUDE, 0, 0}, |
f3ed775e DG |
107 | {0, 0, 0, 0, 0, 0, 0} |
108 | }; | |
109 | ||
110 | /* | |
111 | * usage | |
112 | */ | |
113 | static void usage(FILE *ofp) | |
114 | { | |
32a6298d | 115 | fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n"); |
f3ed775e | 116 | fprintf(ofp, "\n"); |
32a6298d | 117 | fprintf(ofp, "Options:\n"); |
f3ed775e | 118 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 119 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d DG |
120 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
121 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); | |
e08bff8d | 122 | fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\n"); |
f3ed775e | 123 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
27221701 | 124 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
b9dfb167 | 125 | fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); |
5cdb6027 | 126 | fprintf(ofp, " -l, --log4j Apply for Java application using LOG4j\n"); |
f3ed775e DG |
127 | fprintf(ofp, "\n"); |
128 | fprintf(ofp, "Event options:\n"); | |
129 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
be49af1e MD |
130 | fprintf(ofp, " - userspace tracer supports wildcards at end of string.\n"); |
131 | fprintf(ofp, " Don't forget to quote to deal with bash expansion.\n"); | |
132 | fprintf(ofp, " e.g.:\n"); | |
133 | fprintf(ofp, " \"*\"\n"); | |
134 | fprintf(ofp, " \"app_component:na*\"\n"); | |
6a240cd9 | 135 | fprintf(ofp, " --probe (addr | symbol | symbol+offset)\n"); |
cf0e5467 MD |
136 | fprintf(ofp, " Dynamic probe.\n"); |
137 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
138 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
6a240cd9 | 139 | fprintf(ofp, " --function (addr | symbol | symbol+offset)\n"); |
8f0d098b MD |
140 | fprintf(ofp, " Dynamic function entry/return probe.\n"); |
141 | fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); | |
142 | fprintf(ofp, " decimal (NNN...) or hexadecimal (0xNNN...)\n"); | |
b213d387 | 143 | #if 0 |
8f0d098b MD |
144 | fprintf(ofp, " --function:entry symbol\n"); |
145 | fprintf(ofp, " Function tracer event\n"); | |
b213d387 | 146 | #endif |
a54bd42d | 147 | fprintf(ofp, " --syscall System call event\n"); |
f3ed775e | 148 | fprintf(ofp, "\n"); |
300b8fd5 | 149 | fprintf(ofp, " --loglevel name\n"); |
f9e8873b | 150 | fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel.\n"); |
5cdb6027 | 151 | fprintf(ofp, " For JUL/LOG4j domain, see the table below for the range values.\n"); |
300b8fd5 MD |
152 | fprintf(ofp, " --loglevel-only name\n"); |
153 | fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); | |
154 | fprintf(ofp, "\n"); | |
0c8477c8 MD |
155 | fprintf(ofp, " The loglevel or loglevel-only options should be\n"); |
156 | fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); | |
157 | fprintf(ofp, " wildcard.\n"); | |
158 | fprintf(ofp, " Available loglevels:\n"); | |
159 | fprintf(ofp, " (higher value is more verbose)\n"); | |
46839cc2 MD |
160 | fprintf(ofp, " TRACE_EMERG = 0\n"); |
161 | fprintf(ofp, " TRACE_ALERT = 1\n"); | |
162 | fprintf(ofp, " TRACE_CRIT = 2\n"); | |
163 | fprintf(ofp, " TRACE_ERR = 3\n"); | |
164 | fprintf(ofp, " TRACE_WARNING = 4\n"); | |
165 | fprintf(ofp, " TRACE_NOTICE = 5\n"); | |
166 | fprintf(ofp, " TRACE_INFO = 6\n"); | |
167 | fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); | |
168 | fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); | |
169 | fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); | |
170 | fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); | |
171 | fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); | |
172 | fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); | |
173 | fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); | |
174 | fprintf(ofp, " TRACE_DEBUG = 14\n"); | |
175 | fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); | |
b2064f54 DG |
176 | fprintf(ofp, "\n"); |
177 | fprintf(ofp, " Available JUL domain loglevels:\n"); | |
178 | fprintf(ofp, " JUL_OFF = INT32_MAX\n"); | |
179 | fprintf(ofp, " JUL_SEVERE = %d\n", LTTNG_LOGLEVEL_JUL_SEVERE); | |
180 | fprintf(ofp, " JUL_WARNING = %d\n", LTTNG_LOGLEVEL_JUL_WARNING); | |
181 | fprintf(ofp, " JUL_INFO = %d\n", LTTNG_LOGLEVEL_JUL_INFO); | |
182 | fprintf(ofp, " JUL_CONFIG = %d\n", LTTNG_LOGLEVEL_JUL_CONFIG); | |
183 | fprintf(ofp, " JUL_FINE = %d\n", LTTNG_LOGLEVEL_JUL_FINE); | |
184 | fprintf(ofp, " JUL_FINER = %d\n", LTTNG_LOGLEVEL_JUL_FINER); | |
185 | fprintf(ofp, " JUL_FINEST = %d\n", LTTNG_LOGLEVEL_JUL_FINEST); | |
186 | fprintf(ofp, " JUL_ALL = INT32_MIN\n"); | |
187 | fprintf(ofp, " (shortcuts such as \"severe\" are allowed)\n"); | |
188 | fprintf(ofp, "\n"); | |
5cdb6027 DG |
189 | fprintf(ofp, " Available LOG4j domain loglevels:\n"); |
190 | fprintf(ofp, " LOG4J_OFF = INT32_MAX\n"); | |
191 | fprintf(ofp, " LOG4J_FATAL = %d\n", LTTNG_LOGLEVEL_LOG4J_FATAL); | |
192 | fprintf(ofp, " LOG4J_ERROR = %d\n", LTTNG_LOGLEVEL_LOG4J_ERROR); | |
193 | fprintf(ofp, " LOG4J_WARN = %d\n", LTTNG_LOGLEVEL_LOG4J_WARN); | |
194 | fprintf(ofp, " LOG4J_INFO = %d\n", LTTNG_LOGLEVEL_LOG4J_INFO); | |
195 | fprintf(ofp, " LOG4J_DEBUG = %d\n", LTTNG_LOGLEVEL_LOG4J_DEBUG); | |
196 | fprintf(ofp, " LOG4J_TRACE = %d\n", LTTNG_LOGLEVEL_LOG4J_TRACE); | |
197 | fprintf(ofp, " LOG4J_ALL = INT32_MIN\n"); | |
198 | fprintf(ofp, " (shortcuts such as \"severe\" are allowed)\n"); | |
199 | fprintf(ofp, "\n"); | |
f2611ab0 | 200 | fprintf(ofp, " -f, --filter \'expression\'\n"); |
ee8ccafa MD |
201 | fprintf(ofp, " Filter expression on event fields and context.\n"); |
202 | fprintf(ofp, " Event recording depends on evaluation.\n"); | |
919e300c MD |
203 | fprintf(ofp, " Only specify on first activation of\n"); |
204 | fprintf(ofp, " a given event within a session.\n"); | |
205 | fprintf(ofp, " Filter only allowed when enabling\n"); | |
206 | fprintf(ofp, " events within a session before tracing\n"); | |
9bd578f5 MD |
207 | fprintf(ofp, " is started. If the filter fails to link\n"); |
208 | fprintf(ofp, " with the event within the traced domain,\n"); | |
209 | fprintf(ofp, " the event will be discarded. Currently,\n"); | |
210 | fprintf(ofp, " filter is only implemented for the user-space\n"); | |
211 | fprintf(ofp, " tracer.\n"); | |
212 | fprintf(ofp, " Expression examples:.\n"); | |
213 | fprintf(ofp, " \n"); | |
214 | fprintf(ofp, " 'intfield > 500 && intfield < 503'\n"); | |
6a240cd9 | 215 | fprintf(ofp, " '(strfield == \"test\" || intfield != 10) && intfield > 33'\n"); |
9bd578f5 MD |
216 | fprintf(ofp, " 'doublefield > 1.1 && intfield < 5.3'\n"); |
217 | fprintf(ofp, " \n"); | |
218 | fprintf(ofp, " Wildcards are allowed at the end of strings:\n"); | |
219 | fprintf(ofp, " 'seqfield1 == \"te*\"'\n"); | |
220 | fprintf(ofp, " In string literals, the escape character is '\\'.\n"); | |
221 | fprintf(ofp, " Use '\\*' for the '*' character, and '\\\\' for\n"); | |
ee8ccafa MD |
222 | fprintf(ofp, " the '\\' character. Wildcard match any sequence of,\n"); |
223 | fprintf(ofp, " characters including an empty sub-string (match 0 or\n"); | |
224 | fprintf(ofp, " more characters).\n"); | |
225 | fprintf(ofp, "\n"); | |
226 | fprintf(ofp, " Context information can be used for filtering. The\n"); | |
227 | fprintf(ofp, " examples below show usage of context filtering on\n"); | |
228 | fprintf(ofp, " process name (with a wildcard), process ID range, and\n"); | |
229 | fprintf(ofp, " unique thread ID for filtering. The process and\n"); | |
230 | fprintf(ofp, " thread ID of running applications can be found under\n"); | |
231 | fprintf(ofp, " columns \"PID\" and \"LWP\" of the \"ps -eLf\" command.\n"); | |
232 | fprintf(ofp, "\n"); | |
233 | fprintf(ofp, " '$ctx.procname == \"demo*\"'\n"); | |
234 | fprintf(ofp, " '$ctx.vpid >= 4433 && $ctx.vpid < 4455'\n"); | |
235 | fprintf(ofp, " '$ctx.vtid == 1234'\n"); | |
c2063d0b JI |
236 | fprintf(ofp, " -x, --exclude LIST\n"); |
237 | fprintf(ofp, " Add exclusions to UST tracepoints:\n"); | |
238 | fprintf(ofp, " Events that match any of the items\n"); | |
239 | fprintf(ofp, " in the comma-separated LIST are not\n"); | |
240 | fprintf(ofp, " enabled, even if they match a wildcard\n"); | |
241 | fprintf(ofp, " definition of the event.\n"); | |
300b8fd5 | 242 | fprintf(ofp, "\n"); |
f3ed775e DG |
243 | } |
244 | ||
0d63dd19 | 245 | /* |
6181537c | 246 | * Parse probe options. |
0d63dd19 | 247 | */ |
cf0e5467 | 248 | static int parse_probe_opts(struct lttng_event *ev, char *opt) |
0d63dd19 | 249 | { |
49d4e302 JRJ |
250 | int ret = CMD_SUCCESS; |
251 | int match; | |
8ff0bbd0 | 252 | char s_hex[19]; |
8ab7c0d9 | 253 | #define S_HEX_LEN_SCANF_IS_A_BROKEN_API "18" /* 18 is (19 - 1) (\0 is extra) */ |
0d63dd19 DG |
254 | char name[LTTNG_SYMBOL_NAME_LEN]; |
255 | ||
256 | if (opt == NULL) { | |
49d4e302 | 257 | ret = CMD_ERROR; |
8f0d098b | 258 | goto end; |
0d63dd19 DG |
259 | } |
260 | ||
261 | /* Check for symbol+offset */ | |
49d4e302 | 262 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
8ab7c0d9 | 263 | "[^'+']+%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", name, s_hex); |
49d4e302 | 264 | if (match == 2) { |
7d29a247 | 265 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 266 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
cf0e5467 | 267 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
9d035200 | 268 | if (*s_hex == '\0') { |
8ff0bbd0 | 269 | ERR("Invalid probe offset %s", s_hex); |
49d4e302 | 270 | ret = CMD_ERROR; |
8f0d098b | 271 | goto end; |
0d63dd19 | 272 | } |
8ff0bbd0 | 273 | ev->attr.probe.offset = strtoul(s_hex, NULL, 0); |
cf0e5467 | 274 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); |
3000dc78 | 275 | ev->attr.probe.addr = 0; |
8f0d098b MD |
276 | goto end; |
277 | } | |
278 | ||
279 | /* Check for symbol */ | |
280 | if (isalpha(name[0])) { | |
49d4e302 | 281 | match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s", |
8ab7c0d9 | 282 | name); |
49d4e302 | 283 | if (match == 1) { |
8f0d098b | 284 | strncpy(ev->attr.probe.symbol_name, name, LTTNG_SYMBOL_NAME_LEN); |
99497cd0 | 285 | ev->attr.probe.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
8f0d098b MD |
286 | DBG("probe symbol %s", ev->attr.probe.symbol_name); |
287 | ev->attr.probe.offset = 0; | |
288 | DBG("probe offset %" PRIu64, ev->attr.probe.offset); | |
289 | ev->attr.probe.addr = 0; | |
290 | goto end; | |
291 | } | |
0d63dd19 DG |
292 | } |
293 | ||
294 | /* Check for address */ | |
49d4e302 JRJ |
295 | match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex); |
296 | if (match > 0) { | |
9d035200 | 297 | if (*s_hex == '\0') { |
8ff0bbd0 | 298 | ERR("Invalid probe address %s", s_hex); |
49d4e302 | 299 | ret = CMD_ERROR; |
8f0d098b | 300 | goto end; |
0d63dd19 | 301 | } |
8ff0bbd0 | 302 | ev->attr.probe.addr = strtoul(s_hex, NULL, 0); |
cf0e5467 | 303 | DBG("probe addr %" PRIu64, ev->attr.probe.addr); |
3000dc78 DG |
304 | ev->attr.probe.offset = 0; |
305 | memset(ev->attr.probe.symbol_name, 0, LTTNG_SYMBOL_NAME_LEN); | |
8f0d098b | 306 | goto end; |
0d63dd19 DG |
307 | } |
308 | ||
309 | /* No match */ | |
49d4e302 | 310 | ret = CMD_ERROR; |
0d63dd19 | 311 | |
8f0d098b | 312 | end: |
0d63dd19 DG |
313 | return ret; |
314 | } | |
315 | ||
5cdb6027 DG |
316 | /* |
317 | * Maps LOG4j loglevel from string to value | |
318 | */ | |
319 | static int loglevel_log4j_str_to_value(const char *inputstr) | |
320 | { | |
321 | int i = 0; | |
322 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
323 | ||
324 | /* | |
325 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
326 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
327 | */ | |
328 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
329 | str[i] = toupper(inputstr[i]); | |
330 | i++; | |
331 | } | |
332 | str[i] = '\0'; | |
333 | ||
334 | if (!strcmp(str, "LOG4J_OFF") || !strcmp(str, "OFF")) { | |
335 | return LTTNG_LOGLEVEL_LOG4J_OFF; | |
336 | } else if (!strcmp(str, "LOG4J_FATAL") || !strcmp(str, "FATAL")) { | |
337 | return LTTNG_LOGLEVEL_LOG4J_FATAL; | |
338 | } else if (!strcmp(str, "LOG4J_ERROR") || !strcmp(str, "ERROR")) { | |
339 | return LTTNG_LOGLEVEL_LOG4J_ERROR; | |
340 | } else if (!strcmp(str, "LOG4J_WARN") || !strcmp(str, "WARN")) { | |
341 | return LTTNG_LOGLEVEL_LOG4J_WARN; | |
342 | } else if (!strcmp(str, "LOG4J_INFO") || !strcmp(str, "INFO")) { | |
343 | return LTTNG_LOGLEVEL_LOG4J_INFO; | |
344 | } else if (!strcmp(str, "LOG4J_DEBUG") || !strcmp(str, "DEBUG")) { | |
345 | return LTTNG_LOGLEVEL_LOG4J_DEBUG; | |
346 | } else if (!strcmp(str, "LOG4J_TRACE") || !strcmp(str, "TRACE")) { | |
347 | return LTTNG_LOGLEVEL_LOG4J_TRACE; | |
348 | } else if (!strcmp(str, "LOG4J_ALL") || !strcmp(str, "ALL")) { | |
349 | return LTTNG_LOGLEVEL_LOG4J_ALL; | |
350 | } else { | |
351 | return -1; | |
352 | } | |
353 | } | |
354 | ||
b2064f54 DG |
355 | /* |
356 | * Maps JUL loglevel from string to value | |
357 | */ | |
358 | static int loglevel_jul_str_to_value(const char *inputstr) | |
359 | { | |
360 | int i = 0; | |
361 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
362 | ||
363 | /* | |
364 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
365 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
366 | */ | |
367 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
368 | str[i] = toupper(inputstr[i]); | |
369 | i++; | |
370 | } | |
371 | str[i] = '\0'; | |
372 | ||
373 | if (!strcmp(str, "JUL_OFF") || !strcmp(str, "OFF")) { | |
374 | return LTTNG_LOGLEVEL_JUL_OFF; | |
375 | } else if (!strcmp(str, "JUL_SEVERE") || !strcmp(str, "SEVERE")) { | |
376 | return LTTNG_LOGLEVEL_JUL_SEVERE; | |
377 | } else if (!strcmp(str, "JUL_WARNING") || !strcmp(str, "WARNING")) { | |
378 | return LTTNG_LOGLEVEL_JUL_WARNING; | |
379 | } else if (!strcmp(str, "JUL_INFO") || !strcmp(str, "INFO")) { | |
380 | return LTTNG_LOGLEVEL_JUL_INFO; | |
381 | } else if (!strcmp(str, "JUL_CONFIG") || !strcmp(str, "CONFIG")) { | |
382 | return LTTNG_LOGLEVEL_JUL_CONFIG; | |
383 | } else if (!strcmp(str, "JUL_FINE") || !strcmp(str, "FINE")) { | |
384 | return LTTNG_LOGLEVEL_JUL_FINE; | |
385 | } else if (!strcmp(str, "JUL_FINER") || !strcmp(str, "FINER")) { | |
386 | return LTTNG_LOGLEVEL_JUL_FINER; | |
387 | } else if (!strcmp(str, "JUL_FINEST") || !strcmp(str, "FINEST")) { | |
388 | return LTTNG_LOGLEVEL_JUL_FINEST; | |
389 | } else if (!strcmp(str, "JUL_ALL") || !strcmp(str, "ALL")) { | |
390 | return LTTNG_LOGLEVEL_JUL_ALL; | |
391 | } else { | |
392 | return -1; | |
393 | } | |
394 | } | |
395 | ||
8005f29a | 396 | /* |
0c8477c8 | 397 | * Maps loglevel from string to value |
8005f29a MD |
398 | */ |
399 | static | |
46839cc2 | 400 | int loglevel_str_to_value(const char *inputstr) |
8005f29a | 401 | { |
46839cc2 MD |
402 | int i = 0; |
403 | char str[LTTNG_SYMBOL_NAME_LEN]; | |
404 | ||
e051e07c DG |
405 | /* |
406 | * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is | |
407 | * added at the end of the loop so a the upper bound we avoid the overflow. | |
408 | */ | |
409 | while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') { | |
46839cc2 MD |
410 | str[i] = toupper(inputstr[i]); |
411 | i++; | |
412 | } | |
413 | str[i] = '\0'; | |
414 | if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { | |
415 | return LTTNG_LOGLEVEL_EMERG; | |
416 | } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { | |
417 | return LTTNG_LOGLEVEL_ALERT; | |
418 | } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { | |
419 | return LTTNG_LOGLEVEL_CRIT; | |
420 | } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { | |
421 | return LTTNG_LOGLEVEL_ERR; | |
422 | } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { | |
423 | return LTTNG_LOGLEVEL_WARNING; | |
424 | } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { | |
425 | return LTTNG_LOGLEVEL_NOTICE; | |
426 | } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { | |
427 | return LTTNG_LOGLEVEL_INFO; | |
428 | } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { | |
429 | return LTTNG_LOGLEVEL_DEBUG_SYSTEM; | |
430 | } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { | |
431 | return LTTNG_LOGLEVEL_DEBUG_PROGRAM; | |
432 | } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { | |
433 | return LTTNG_LOGLEVEL_DEBUG_PROCESS; | |
434 | } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { | |
435 | return LTTNG_LOGLEVEL_DEBUG_MODULE; | |
436 | } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { | |
437 | return LTTNG_LOGLEVEL_DEBUG_UNIT; | |
438 | } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { | |
439 | return LTTNG_LOGLEVEL_DEBUG_FUNCTION; | |
440 | } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { | |
441 | return LTTNG_LOGLEVEL_DEBUG_LINE; | |
442 | } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { | |
443 | return LTTNG_LOGLEVEL_DEBUG; | |
8005f29a MD |
444 | } else { |
445 | return -1; | |
446 | } | |
447 | } | |
448 | ||
85076754 MD |
449 | static |
450 | const char *print_channel_name(const char *name) | |
451 | { | |
452 | return name ? : DEFAULT_CHANNEL_NAME; | |
453 | } | |
454 | ||
455 | static | |
456 | const char *print_raw_channel_name(const char *name) | |
457 | { | |
458 | return name ? : "<default>"; | |
459 | } | |
460 | ||
89476427 JRJ |
461 | /* |
462 | * Mi print exlcusion list | |
463 | */ | |
464 | static | |
465 | int mi_print_exclusion(int count, char **names) | |
466 | { | |
467 | int i, ret; | |
468 | ||
469 | assert(writer); | |
470 | ||
471 | if (count == 0) { | |
472 | ret = 0; | |
473 | goto end; | |
474 | } | |
475 | ret = mi_lttng_writer_open_element(writer, config_element_exclusions); | |
476 | if (ret) { | |
477 | goto end; | |
478 | } | |
479 | ||
480 | for (i = 0; i < count; i++) { | |
481 | ret = mi_lttng_writer_write_element_string(writer, | |
482 | config_element_exclusion, names[i]); | |
483 | if (ret) { | |
484 | goto end; | |
485 | } | |
486 | } | |
487 | ||
488 | /* Close exclusions element */ | |
489 | ret = mi_lttng_writer_close_element(writer); | |
490 | ||
491 | end: | |
492 | return ret; | |
493 | } | |
494 | ||
9c48cab3 JI |
495 | /* |
496 | * Return allocated string for pretty-printing exclusion names. | |
497 | */ | |
498 | static | |
499 | char *print_exclusions(int count, char **names) | |
500 | { | |
501 | int length = 0; | |
502 | int i; | |
503 | const char *preamble = " excluding "; | |
504 | char *ret; | |
505 | ||
506 | if (count == 0) { | |
507 | return strdup(""); | |
508 | } | |
509 | ||
510 | /* calculate total required length */ | |
511 | for (i = 0; i < count; i++) { | |
512 | length += strlen(names[i]) + 1; | |
513 | } | |
514 | ||
515 | /* add length of preamble + one for NUL - one for last (missing) comma */ | |
516 | length += strlen(preamble); | |
517 | ret = malloc(length); | |
518 | strncpy(ret, preamble, length); | |
519 | for (i = 0; i < count; i++) { | |
520 | strcat(ret, names[i]); | |
521 | if (i != count - 1) { | |
522 | strcat(ret, ","); | |
523 | } | |
524 | } | |
89476427 | 525 | |
9c48cab3 JI |
526 | return ret; |
527 | } | |
528 | ||
748bde76 JI |
529 | /* |
530 | * Compare list of exclusions against an event name. | |
531 | * Return a list of legal exclusion names. | |
532 | * Produce an error or a warning about others (depending on the situation) | |
533 | */ | |
534 | static | |
535 | int check_exclusion_subsets(const char *event_name, | |
536 | const char *exclusions, | |
537 | int *exclusion_count_ptr, | |
538 | char ***exclusion_list_ptr) | |
539 | { | |
540 | const char *excluder_ptr; | |
541 | const char *event_ptr; | |
542 | const char *next_excluder; | |
543 | int excluder_length; | |
544 | int exclusion_count = 0; | |
545 | char **exclusion_list = NULL; | |
546 | int ret = CMD_SUCCESS; | |
547 | ||
548 | if (event_name[strlen(event_name) - 1] != '*') { | |
549 | ERR("Event %s: Excluders can only be used with wildcarded events", event_name); | |
550 | goto error; | |
551 | } | |
552 | ||
553 | next_excluder = exclusions; | |
554 | while (*next_excluder != 0) { | |
555 | event_ptr = event_name; | |
556 | excluder_ptr = next_excluder; | |
557 | excluder_length = strcspn(next_excluder, ","); | |
558 | ||
559 | /* Scan both the excluder and the event letter by letter */ | |
560 | while (1) { | |
561 | char e, x; | |
562 | ||
563 | e = *event_ptr; | |
564 | x = *excluder_ptr; | |
565 | ||
566 | if (x == '*') { | |
567 | /* Event is a subset of the excluder */ | |
568 | ERR("Event %s: %.*s excludes all events from %s", | |
569 | event_name, | |
570 | excluder_length, | |
571 | next_excluder, | |
572 | event_name); | |
573 | goto error; | |
574 | } | |
575 | if (e == '*') { | |
576 | /* Excluder is a proper subset of event */ | |
577 | exclusion_count++; | |
578 | exclusion_list = realloc(exclusion_list, sizeof(char **) * exclusion_count); | |
579 | exclusion_list[exclusion_count - 1] = strndup(next_excluder, excluder_length); | |
580 | ||
581 | break; | |
582 | } | |
583 | if (x != e) { | |
584 | /* Excluder and event sets have no common elements */ | |
585 | WARN("Event %s: %.*s does not exclude any events from %s", | |
586 | event_name, | |
587 | excluder_length, | |
588 | next_excluder, | |
589 | event_name); | |
590 | break; | |
591 | } | |
592 | excluder_ptr++; | |
593 | event_ptr++; | |
594 | } | |
595 | /* next excluder */ | |
596 | next_excluder += excluder_length; | |
597 | if (*next_excluder == ',') { | |
598 | next_excluder++; | |
599 | } | |
600 | } | |
601 | goto end; | |
602 | error: | |
603 | while (exclusion_count--) { | |
604 | free(exclusion_list[exclusion_count]); | |
605 | } | |
606 | if (exclusion_list != NULL) { | |
607 | free(exclusion_list); | |
608 | } | |
609 | exclusion_list = NULL; | |
610 | exclusion_count = 0; | |
611 | ret = CMD_ERROR; | |
612 | end: | |
613 | *exclusion_count_ptr = exclusion_count; | |
614 | *exclusion_list_ptr = exclusion_list; | |
615 | return ret; | |
616 | } | |
f3ed775e | 617 | /* |
6181537c | 618 | * Enabling event using the lttng API. |
89476427 | 619 | * Note: in case of error only the last error code will be return. |
f3ed775e | 620 | */ |
cd80958d | 621 | static int enable_events(char *session_name) |
f3ed775e | 622 | { |
89476427 JRJ |
623 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS; |
624 | int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1; | |
b73d0b29 | 625 | char *event_name, *channel_name = NULL; |
f3ed775e | 626 | struct lttng_event ev; |
7d29a247 | 627 | struct lttng_domain dom; |
7ed70bc9 JI |
628 | int exclusion_count = 0; |
629 | char **exclusion_list = NULL; | |
f3ed775e | 630 | |
441c16a7 MD |
631 | memset(&ev, 0, sizeof(ev)); |
632 | memset(&dom, 0, sizeof(dom)); | |
633 | ||
53a80697 MD |
634 | if (opt_kernel) { |
635 | if (opt_filter) { | |
636 | ERR("Filter not implement for kernel tracing yet"); | |
637 | ret = CMD_ERROR; | |
638 | goto error; | |
639 | } | |
67b58630 JG |
640 | if (opt_loglevel) { |
641 | WARN("Kernel loglevels are not supported."); | |
642 | } | |
53a80697 MD |
643 | } |
644 | ||
7d29a247 DG |
645 | /* Create lttng domain */ |
646 | if (opt_kernel) { | |
647 | dom.type = LTTNG_DOMAIN_KERNEL; | |
7972aab2 | 648 | dom.buf_type = LTTNG_BUFFER_GLOBAL; |
d78d6610 | 649 | } else if (opt_userspace) { |
2bdd86d4 | 650 | dom.type = LTTNG_DOMAIN_UST; |
7972aab2 | 651 | /* Default. */ |
8692d4e5 | 652 | dom.buf_type = LTTNG_BUFFER_PER_UID; |
b9dfb167 DG |
653 | } else if (opt_jul) { |
654 | dom.type = LTTNG_DOMAIN_JUL; | |
655 | /* Default. */ | |
656 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
5cdb6027 DG |
657 | } else if (opt_log4j) { |
658 | dom.type = LTTNG_DOMAIN_LOG4J; | |
659 | /* Default. */ | |
660 | dom.buf_type = LTTNG_BUFFER_PER_UID; | |
6181537c | 661 | } else { |
b9dfb167 | 662 | print_missing_domain(); |
d16c1a4c | 663 | ret = CMD_ERROR; |
6181537c | 664 | goto error; |
2bdd86d4 | 665 | } |
7d29a247 | 666 | |
d5dd17fd JI |
667 | if (opt_kernel && opt_exclude) { |
668 | ERR("Event name exclusions are not yet implemented for kernel events"); | |
669 | ret = CMD_ERROR; | |
670 | goto error; | |
671 | } | |
672 | ||
85076754 | 673 | channel_name = opt_channel_name; |
ae856491 | 674 | |
cd80958d DG |
675 | handle = lttng_create_handle(session_name, &dom); |
676 | if (handle == NULL) { | |
677 | ret = -1; | |
678 | goto error; | |
679 | } | |
1aef21b6 | 680 | |
89476427 JRJ |
681 | /* Prepare Mi */ |
682 | if (lttng_opt_mi) { | |
683 | /* Open a events element */ | |
684 | ret = mi_lttng_writer_open_element(writer, config_element_events); | |
685 | if (ret) { | |
686 | ret = CMD_ERROR; | |
687 | goto error; | |
688 | } | |
689 | } | |
690 | ||
cd80958d | 691 | if (opt_enable_all) { |
8c9ae521 | 692 | /* Default setup for enable all */ |
75e8c5ab MD |
693 | if (opt_kernel) { |
694 | ev.type = opt_event_type; | |
695 | ev.name[0] = '\0'; | |
300b8fd5 MD |
696 | /* kernel loglevels not implemented */ |
697 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
75e8c5ab MD |
698 | } else { |
699 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
700 | strcpy(ev.name, "*"); | |
300b8fd5 MD |
701 | ev.loglevel_type = opt_loglevel_type; |
702 | if (opt_loglevel) { | |
5cdb6027 | 703 | assert(opt_userspace || opt_jul || opt_log4j); |
b2064f54 DG |
704 | if (opt_userspace) { |
705 | ev.loglevel = loglevel_str_to_value(opt_loglevel); | |
706 | } else if (opt_jul) { | |
707 | ev.loglevel = loglevel_jul_str_to_value(opt_loglevel); | |
5cdb6027 DG |
708 | } else if (opt_log4j) { |
709 | ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel); | |
b2064f54 | 710 | } |
300b8fd5 MD |
711 | if (ev.loglevel == -1) { |
712 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 713 | ret = -LTTNG_ERR_INVALID; |
300b8fd5 MD |
714 | goto error; |
715 | } | |
22e25b71 | 716 | } else { |
5cdb6027 | 717 | assert(opt_userspace || opt_jul || opt_log4j); |
b2064f54 DG |
718 | if (opt_userspace) { |
719 | ev.loglevel = -1; | |
5cdb6027 | 720 | } else if (opt_jul || opt_log4j) { |
b2064f54 DG |
721 | ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
722 | } | |
300b8fd5 | 723 | } |
75e8c5ab | 724 | } |
8c9ae521 | 725 | |
7ed70bc9 JI |
726 | if (opt_exclude) { |
727 | ret = check_exclusion_subsets("*", opt_exclude, | |
728 | &exclusion_count, &exclusion_list); | |
729 | if (ret == CMD_ERROR) { | |
730 | goto error; | |
731 | } | |
89476427 | 732 | ev.exclusion = 1; |
7ed70bc9 | 733 | } |
025faf73 | 734 | if (!opt_filter) { |
7ed70bc9 JI |
735 | ret = lttng_enable_event_with_exclusions(handle, |
736 | &ev, channel_name, | |
737 | NULL, | |
738 | exclusion_count, exclusion_list); | |
025faf73 DG |
739 | if (ret < 0) { |
740 | switch (-ret) { | |
741 | case LTTNG_ERR_KERN_EVENT_EXIST: | |
742 | WARN("Kernel events already enabled (channel %s, session %s)", | |
85076754 | 743 | print_channel_name(channel_name), session_name); |
89476427 | 744 | warn = 1; |
025faf73 | 745 | break; |
9e2a1daf CB |
746 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
747 | { | |
748 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
749 | ERR("Events: %s (channel %s, session %s)", | |
750 | msg, | |
751 | print_channel_name(channel_name), | |
752 | session_name); | |
753 | error = 1; | |
754 | break; | |
755 | } | |
025faf73 DG |
756 | default: |
757 | ERR("Events: %s (channel %s, session %s)", | |
85076754 MD |
758 | lttng_strerror(ret), |
759 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
760 | ? print_raw_channel_name(channel_name) | |
761 | : print_channel_name(channel_name), | |
762 | session_name); | |
89476427 | 763 | error = 1; |
025faf73 DG |
764 | break; |
765 | } | |
766 | goto end; | |
42224349 | 767 | } |
8c9ae521 | 768 | |
025faf73 DG |
769 | switch (opt_event_type) { |
770 | case LTTNG_EVENT_TRACEPOINT: | |
67b58630 | 771 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9c48cab3 JI |
772 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
773 | MSG("All %s tracepoints%s are enabled in channel %s for loglevel %s", | |
b9dfb167 | 774 | get_domain_str(dom.type), |
9c48cab3 | 775 | exclusion_string, |
85076754 | 776 | print_channel_name(channel_name), |
025faf73 | 777 | opt_loglevel); |
9c48cab3 | 778 | free(exclusion_string); |
025faf73 | 779 | } else { |
9c48cab3 JI |
780 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
781 | MSG("All %s tracepoints%s are enabled in channel %s", | |
b9dfb167 | 782 | get_domain_str(dom.type), |
9c48cab3 | 783 | exclusion_string, |
85076754 | 784 | print_channel_name(channel_name)); |
9c48cab3 | 785 | free(exclusion_string); |
025faf73 DG |
786 | } |
787 | break; | |
788 | case LTTNG_EVENT_SYSCALL: | |
789 | if (opt_kernel) { | |
6e911cad MD |
790 | MSG("All %s system calls are enabled in channel %s", |
791 | get_domain_str(dom.type), | |
85076754 | 792 | print_channel_name(channel_name)); |
025faf73 DG |
793 | } |
794 | break; | |
795 | case LTTNG_EVENT_ALL: | |
67b58630 | 796 | if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) { |
9c48cab3 JI |
797 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
798 | MSG("All %s events%s are enabled in channel %s for loglevel %s", | |
b9dfb167 | 799 | get_domain_str(dom.type), |
9c48cab3 | 800 | exclusion_string, |
85076754 | 801 | print_channel_name(channel_name), |
025faf73 | 802 | opt_loglevel); |
9c48cab3 | 803 | free(exclusion_string); |
025faf73 | 804 | } else { |
9c48cab3 JI |
805 | char *exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
806 | MSG("All %s events%s are enabled in channel %s", | |
b9dfb167 | 807 | get_domain_str(dom.type), |
9c48cab3 | 808 | exclusion_string, |
85076754 | 809 | print_channel_name(channel_name)); |
9c48cab3 | 810 | free(exclusion_string); |
025faf73 DG |
811 | } |
812 | break; | |
813 | default: | |
814 | /* | |
815 | * We should not be here since lttng_enable_event should have | |
816 | * failed on the event type. | |
817 | */ | |
818 | goto error; | |
57064ada | 819 | } |
f3ed775e | 820 | } |
89476427 | 821 | |
025faf73 | 822 | if (opt_filter) { |
89476427 | 823 | command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name, |
7ed70bc9 | 824 | opt_filter, exclusion_count, exclusion_list); |
89476427 JRJ |
825 | if (command_ret < 0) { |
826 | switch (-command_ret) { | |
16363652 | 827 | case LTTNG_ERR_FILTER_EXIST: |
85076754 | 828 | WARN("Filter on all events is already enabled" |
16363652 | 829 | " (channel %s, session %s)", |
85076754 | 830 | print_channel_name(channel_name), session_name); |
89476427 | 831 | warn = 1; |
16363652 | 832 | break; |
9e2a1daf CB |
833 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
834 | { | |
835 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
836 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", | |
837 | msg, | |
838 | print_channel_name(channel_name), | |
839 | session_name, opt_filter); | |
840 | error = 1; | |
841 | break; | |
842 | } | |
16363652 | 843 | default: |
85076754 | 844 | ERR("All events: %s (channel %s, session %s, filter \'%s\')", |
da3d7d0e JRJ |
845 | lttng_strerror(command_ret), |
846 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
847 | ? print_raw_channel_name(channel_name) |
848 | : print_channel_name(channel_name), | |
849 | session_name, opt_filter); | |
89476427 | 850 | error = 1; |
16363652 DG |
851 | break; |
852 | } | |
89476427 | 853 | error_holder = command_ret; |
16363652 | 854 | } else { |
89476427 | 855 | ev.filter = 1; |
16363652 DG |
856 | MSG("Filter '%s' successfully set", opt_filter); |
857 | } | |
858 | } | |
89476427 JRJ |
859 | |
860 | if (lttng_opt_mi) { | |
861 | /* The wildcard * is used for kernel and ust domain to | |
862 | * represent ALL. We copy * in event name to force the wildcard use | |
863 | * for kernel domain | |
864 | * | |
865 | * Note: this is strictly for semantic and printing while in | |
866 | * machine interface mode. | |
867 | */ | |
868 | strcpy(ev.name, "*"); | |
869 | ||
870 | /* If we reach here the events are enabled */ | |
871 | if (!error && !warn) { | |
872 | ev.enabled = 1; | |
873 | } else { | |
874 | ev.enabled = 0; | |
875 | success = 0; | |
876 | } | |
970d848b | 877 | ret = mi_lttng_event(writer, &ev, 1, handle->domain.type); |
89476427 JRJ |
878 | if (ret) { |
879 | ret = CMD_ERROR; | |
880 | goto error; | |
881 | } | |
882 | ||
883 | /* print exclusion */ | |
884 | ret = mi_print_exclusion(exclusion_count, exclusion_list); | |
885 | if (ret) { | |
886 | ret = CMD_ERROR; | |
887 | goto error; | |
888 | } | |
889 | ||
890 | /* Success ? */ | |
891 | ret = mi_lttng_writer_write_element_bool(writer, | |
892 | mi_lttng_element_command_success, success); | |
893 | if (ret) { | |
894 | ret = CMD_ERROR; | |
895 | goto error; | |
896 | } | |
897 | ||
898 | /* Close event element */ | |
899 | ret = mi_lttng_writer_close_element(writer); | |
900 | if (ret) { | |
901 | ret = CMD_ERROR; | |
902 | goto error; | |
903 | } | |
904 | } | |
905 | ||
8c9ae521 | 906 | goto end; |
f3ed775e DG |
907 | } |
908 | ||
909 | /* Strip event list */ | |
910 | event_name = strtok(opt_event_list, ","); | |
911 | while (event_name != NULL) { | |
6181537c DG |
912 | /* Copy name and type of the event */ |
913 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
914 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
915 | ev.type = opt_event_type; | |
916 | ||
f3ed775e DG |
917 | /* Kernel tracer action */ |
918 | if (opt_kernel) { | |
919 | DBG("Enabling kernel event %s for channel %s", | |
85076754 MD |
920 | event_name, |
921 | print_channel_name(channel_name)); | |
f3ed775e DG |
922 | |
923 | switch (opt_event_type) { | |
7a3d1328 MD |
924 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ |
925 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
926 | /* Fall-through */ | |
e6ddca71 | 927 | case LTTNG_EVENT_TRACEPOINT: |
f3ed775e | 928 | break; |
7d29a247 | 929 | case LTTNG_EVENT_PROBE: |
cf0e5467 | 930 | ret = parse_probe_opts(&ev, opt_probe); |
49d4e302 | 931 | if (ret) { |
cf0e5467 | 932 | ERR("Unable to parse probe options"); |
0d63dd19 DG |
933 | ret = 0; |
934 | goto error; | |
935 | } | |
f3ed775e DG |
936 | break; |
937 | case LTTNG_EVENT_FUNCTION: | |
8f0d098b | 938 | ret = parse_probe_opts(&ev, opt_function); |
49d4e302 | 939 | if (ret) { |
8f0d098b MD |
940 | ERR("Unable to parse function probe options"); |
941 | ret = 0; | |
942 | goto error; | |
943 | } | |
944 | break; | |
945 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
6181537c DG |
946 | strncpy(ev.attr.ftrace.symbol_name, opt_function_entry_symbol, |
947 | LTTNG_SYMBOL_NAME_LEN); | |
99497cd0 | 948 | ev.attr.ftrace.symbol_name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
f3ed775e | 949 | break; |
a54bd42d | 950 | case LTTNG_EVENT_SYSCALL: |
c6aa2d41 MD |
951 | ev.type = LTTNG_EVENT_SYSCALL; |
952 | break; | |
f3ed775e | 953 | default: |
1ab1ea0b | 954 | ret = CMD_UNDEFINED; |
f3ed775e DG |
955 | goto error; |
956 | } | |
0cda4f28 | 957 | |
0cda4f28 | 958 | /* kernel loglevels not implemented */ |
8005f29a | 959 | ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; |
f3ed775e | 960 | } else if (opt_userspace) { /* User-space tracer action */ |
d78d6610 | 961 | #if 0 |
e14f64a8 DG |
962 | if (opt_cmd_name != NULL || opt_pid) { |
963 | MSG("Only supporting tracing all UST processes (-u) for now."); | |
1ab1ea0b | 964 | ret = CMD_UNDEFINED; |
2bdd86d4 MD |
965 | goto error; |
966 | } | |
d78d6610 | 967 | #endif |
6181537c | 968 | |
300b8fd5 | 969 | DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, |
85076754 | 970 | print_channel_name(channel_name), opt_loglevel ? : "<all>"); |
2bdd86d4 MD |
971 | |
972 | switch (opt_event_type) { | |
973 | case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ | |
2bdd86d4 MD |
974 | /* Fall-through */ |
975 | case LTTNG_EVENT_TRACEPOINT: | |
e4baff1e MD |
976 | /* Copy name and type of the event */ |
977 | ev.type = LTTNG_EVENT_TRACEPOINT; | |
978 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
979 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
2bdd86d4 MD |
980 | break; |
981 | case LTTNG_EVENT_PROBE: | |
982 | case LTTNG_EVENT_FUNCTION: | |
983 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
984 | case LTTNG_EVENT_SYSCALL: | |
985 | default: | |
cc62c0c0 | 986 | ERR("Event type not available for user-space tracing"); |
4ce78777 | 987 | ret = CMD_UNSUPPORTED; |
2bdd86d4 MD |
988 | goto error; |
989 | } | |
0cda4f28 | 990 | |
7ed70bc9 | 991 | if (opt_exclude) { |
89476427 | 992 | ev.exclusion = 1; |
d5dd17fd JI |
993 | if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) { |
994 | ERR("Exclusion option can only be used with tracepoint events"); | |
995 | ret = CMD_ERROR; | |
996 | goto error; | |
997 | } | |
7ed70bc9 JI |
998 | /* Free previously allocated items */ |
999 | if (exclusion_list != NULL) { | |
1000 | while (exclusion_count--) { | |
1001 | free(exclusion_list[exclusion_count]); | |
1002 | } | |
1003 | free(exclusion_list); | |
1004 | exclusion_list = NULL; | |
1005 | } | |
1006 | /* Check for proper subsets */ | |
1007 | ret = check_exclusion_subsets(event_name, opt_exclude, | |
1008 | &exclusion_count, &exclusion_list); | |
1009 | if (ret == CMD_ERROR) { | |
1010 | goto error; | |
1011 | } | |
1012 | } | |
1013 | ||
0cda4f28 | 1014 | ev.loglevel_type = opt_loglevel_type; |
ed7f4083 | 1015 | if (opt_loglevel) { |
8005f29a MD |
1016 | ev.loglevel = loglevel_str_to_value(opt_loglevel); |
1017 | if (ev.loglevel == -1) { | |
1018 | ERR("Unknown loglevel %s", opt_loglevel); | |
2f70b271 | 1019 | ret = -LTTNG_ERR_INVALID; |
8005f29a MD |
1020 | goto error; |
1021 | } | |
22e25b71 MD |
1022 | } else { |
1023 | ev.loglevel = -1; | |
ed7f4083 | 1024 | } |
5cdb6027 | 1025 | } else if (opt_jul || opt_log4j) { |
b9dfb167 DG |
1026 | if (opt_event_type != LTTNG_EVENT_ALL && |
1027 | opt_event_type != LTTNG_EVENT_TRACEPOINT) { | |
5cdb6027 | 1028 | ERR("Event type not supported for domain."); |
b9dfb167 DG |
1029 | ret = CMD_UNSUPPORTED; |
1030 | goto error; | |
1031 | } | |
b2064f54 DG |
1032 | |
1033 | ev.loglevel_type = opt_loglevel_type; | |
1034 | if (opt_loglevel) { | |
5cdb6027 DG |
1035 | if (opt_jul) { |
1036 | ev.loglevel = loglevel_jul_str_to_value(opt_loglevel); | |
1037 | } else if (opt_log4j) { | |
1038 | ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel); | |
1039 | } | |
b2064f54 DG |
1040 | if (ev.loglevel == -1) { |
1041 | ERR("Unknown loglevel %s", opt_loglevel); | |
1042 | ret = -LTTNG_ERR_INVALID; | |
1043 | goto error; | |
1044 | } | |
1045 | } else { | |
5cdb6027 DG |
1046 | if (opt_jul) { |
1047 | ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1048 | } else if (opt_log4j) { | |
1049 | ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1050 | } | |
b2064f54 | 1051 | } |
b9dfb167 DG |
1052 | ev.type = LTTNG_EVENT_TRACEPOINT; |
1053 | strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); | |
1054 | ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; | |
f3ed775e | 1055 | } else { |
b9dfb167 | 1056 | print_missing_domain(); |
300b8fd5 | 1057 | ret = CMD_ERROR; |
f3ed775e DG |
1058 | goto error; |
1059 | } | |
1060 | ||
025faf73 | 1061 | if (!opt_filter) { |
9c48cab3 JI |
1062 | char *exclusion_string; |
1063 | ||
89476427 | 1064 | command_ret = lttng_enable_event_with_exclusions(handle, |
7ed70bc9 JI |
1065 | &ev, channel_name, |
1066 | NULL, exclusion_count, exclusion_list); | |
9c48cab3 | 1067 | exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
89476427 | 1068 | if (command_ret < 0) { |
025faf73 | 1069 | /* Turn ret to positive value to handle the positive error code */ |
89476427 | 1070 | switch (-command_ret) { |
025faf73 | 1071 | case LTTNG_ERR_KERN_EVENT_EXIST: |
9c48cab3 | 1072 | WARN("Kernel event %s%s already enabled (channel %s, session %s)", |
85076754 | 1073 | event_name, |
9c48cab3 | 1074 | exclusion_string, |
85076754 | 1075 | print_channel_name(channel_name), session_name); |
89476427 | 1076 | warn = 1; |
025faf73 | 1077 | break; |
9e2a1daf CB |
1078 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1079 | { | |
1080 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1081 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, | |
1082 | exclusion_string, | |
1083 | msg, | |
1084 | print_channel_name(channel_name), | |
1085 | session_name); | |
1086 | error = 1; | |
1087 | break; | |
1088 | } | |
025faf73 | 1089 | default: |
9c48cab3 JI |
1090 | ERR("Event %s%s: %s (channel %s, session %s)", event_name, |
1091 | exclusion_string, | |
da3d7d0e JRJ |
1092 | lttng_strerror(command_ret), |
1093 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1094 | ? print_raw_channel_name(channel_name) |
1095 | : print_channel_name(channel_name), | |
1096 | session_name); | |
89476427 | 1097 | error = 1; |
025faf73 DG |
1098 | break; |
1099 | } | |
89476427 | 1100 | error_holder = command_ret; |
025faf73 | 1101 | } else { |
5cdb6027 DG |
1102 | /* So we don't print the default channel name for agent domain. */ |
1103 | if (dom.type == LTTNG_DOMAIN_JUL || | |
1104 | dom.type == LTTNG_DOMAIN_LOG4J) { | |
49ceaa70 DG |
1105 | MSG("%s event %s%s enabled.", |
1106 | get_domain_str(dom.type), event_name, | |
1107 | exclusion_string); | |
1108 | } else { | |
1109 | MSG("%s event %s%s created in channel %s", | |
1110 | get_domain_str(dom.type), event_name, | |
1111 | exclusion_string, | |
1112 | print_channel_name(channel_name)); | |
1113 | } | |
42224349 | 1114 | } |
9c48cab3 | 1115 | free(exclusion_string); |
6181537c | 1116 | } |
025faf73 DG |
1117 | |
1118 | if (opt_filter) { | |
9c48cab3 JI |
1119 | char *exclusion_string; |
1120 | ||
89476427 JRJ |
1121 | /* Filter present */ |
1122 | ev.filter = 1; | |
1123 | ||
1124 | command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name, | |
7ed70bc9 | 1125 | opt_filter, exclusion_count, exclusion_list); |
9c48cab3 JI |
1126 | exclusion_string = print_exclusions(exclusion_count, exclusion_list); |
1127 | ||
89476427 JRJ |
1128 | if (command_ret < 0) { |
1129 | switch (-command_ret) { | |
7671f53c | 1130 | case LTTNG_ERR_FILTER_EXIST: |
9c48cab3 | 1131 | WARN("Filter on event %s%s is already enabled" |
7671f53c | 1132 | " (channel %s, session %s)", |
85076754 | 1133 | event_name, |
9c48cab3 | 1134 | exclusion_string, |
85076754 | 1135 | print_channel_name(channel_name), session_name); |
89476427 | 1136 | warn = 1; |
7671f53c | 1137 | break; |
9e2a1daf CB |
1138 | case LTTNG_ERR_TRACE_ALREADY_STARTED: |
1139 | { | |
1140 | const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once."; | |
1141 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name, | |
1142 | exclusion_string, | |
1143 | msg, | |
1144 | print_channel_name(channel_name), | |
1145 | session_name, opt_filter); | |
1146 | error = 1; | |
1147 | break; | |
1148 | } | |
7671f53c | 1149 | default: |
9c48cab3 JI |
1150 | ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name, |
1151 | exclusion_string, | |
da3d7d0e JRJ |
1152 | lttng_strerror(command_ret), |
1153 | command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
85076754 MD |
1154 | ? print_raw_channel_name(channel_name) |
1155 | : print_channel_name(channel_name), | |
1156 | session_name, opt_filter); | |
89476427 | 1157 | error = 1; |
7671f53c CB |
1158 | break; |
1159 | } | |
89476427 JRJ |
1160 | error_holder = command_ret; |
1161 | ||
16363652 | 1162 | } else { |
9c48cab3 JI |
1163 | MSG("Event %s%s: Filter '%s' successfully set", |
1164 | event_name, exclusion_string, | |
1165 | opt_filter); | |
53a80697 | 1166 | } |
9c48cab3 | 1167 | free(exclusion_string); |
53a80697 | 1168 | } |
6181537c | 1169 | |
89476427 JRJ |
1170 | if (lttng_opt_mi) { |
1171 | if (command_ret) { | |
1172 | success = 0; | |
1173 | ev.enabled = 0; | |
1174 | } else { | |
1175 | ev.enabled = 1; | |
1176 | } | |
1177 | ||
970d848b | 1178 | ret = mi_lttng_event(writer, &ev, 1, handle->domain.type); |
89476427 JRJ |
1179 | if (ret) { |
1180 | ret = CMD_ERROR; | |
1181 | goto error; | |
1182 | } | |
1183 | ||
1184 | /* print exclusion */ | |
1185 | ret = mi_print_exclusion(exclusion_count, exclusion_list); | |
1186 | if (ret) { | |
1187 | ret = CMD_ERROR; | |
1188 | goto error; | |
1189 | } | |
1190 | ||
1191 | /* Success ? */ | |
1192 | ret = mi_lttng_writer_write_element_bool(writer, | |
1193 | mi_lttng_element_command_success, success); | |
1194 | if (ret) { | |
1195 | ret = CMD_ERROR; | |
1196 | goto end; | |
1197 | } | |
1198 | ||
1199 | /* Close event element */ | |
1200 | ret = mi_lttng_writer_close_element(writer); | |
1201 | if (ret) { | |
1202 | ret = CMD_ERROR; | |
1203 | goto end; | |
1204 | } | |
1205 | } | |
1206 | ||
f3ed775e DG |
1207 | /* Next event */ |
1208 | event_name = strtok(NULL, ","); | |
89476427 JRJ |
1209 | /* Reset warn, error and success */ |
1210 | success = 1; | |
f3ed775e DG |
1211 | } |
1212 | ||
8c9ae521 | 1213 | end: |
89476427 JRJ |
1214 | /* Close Mi */ |
1215 | if (lttng_opt_mi) { | |
1216 | /* Close events element */ | |
1217 | ret = mi_lttng_writer_close_element(writer); | |
1218 | if (ret) { | |
1219 | ret = CMD_ERROR; | |
1220 | goto error; | |
1221 | } | |
1222 | } | |
f3ed775e | 1223 | error: |
ae856491 DG |
1224 | if (warn) { |
1225 | ret = CMD_WARNING; | |
1226 | } | |
89476427 JRJ |
1227 | if (error) { |
1228 | ret = CMD_ERROR; | |
1229 | } | |
cd80958d DG |
1230 | lttng_destroy_handle(handle); |
1231 | ||
7ed70bc9 JI |
1232 | if (exclusion_list != NULL) { |
1233 | while (exclusion_count--) { | |
1234 | free(exclusion_list[exclusion_count]); | |
1235 | } | |
1236 | free(exclusion_list); | |
1237 | } | |
1238 | ||
89476427 JRJ |
1239 | /* Overwrite ret with error_holder if there was an actual error with |
1240 | * enabling an event. | |
1241 | */ | |
1242 | ret = error_holder ? error_holder : ret; | |
1243 | ||
f3ed775e DG |
1244 | return ret; |
1245 | } | |
1246 | ||
1247 | /* | |
6181537c | 1248 | * Add event to trace session |
f3ed775e DG |
1249 | */ |
1250 | int cmd_enable_events(int argc, const char **argv) | |
1251 | { | |
89476427 | 1252 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
f3ed775e | 1253 | static poptContext pc; |
cd80958d | 1254 | char *session_name = NULL; |
de044b7a | 1255 | int event_type = -1; |
f3ed775e DG |
1256 | |
1257 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
1258 | poptReadDefaultConfig(pc, 0); | |
1259 | ||
1260 | /* Default event type */ | |
7a3d1328 | 1261 | opt_event_type = LTTNG_EVENT_ALL; |
f3ed775e DG |
1262 | |
1263 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
1264 | switch (opt) { | |
1265 | case OPT_HELP: | |
ca1c3607 | 1266 | usage(stdout); |
f3ed775e | 1267 | goto end; |
f3ed775e | 1268 | case OPT_TRACEPOINT: |
e6ddca71 | 1269 | opt_event_type = LTTNG_EVENT_TRACEPOINT; |
f3ed775e | 1270 | break; |
cf0e5467 | 1271 | case OPT_PROBE: |
7d29a247 | 1272 | opt_event_type = LTTNG_EVENT_PROBE; |
f3ed775e DG |
1273 | break; |
1274 | case OPT_FUNCTION: | |
1275 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
8f0d098b MD |
1276 | break; |
1277 | case OPT_FUNCTION_ENTRY: | |
1278 | opt_event_type = LTTNG_EVENT_FUNCTION_ENTRY; | |
f3ed775e | 1279 | break; |
a54bd42d MD |
1280 | case OPT_SYSCALL: |
1281 | opt_event_type = LTTNG_EVENT_SYSCALL; | |
0133c199 | 1282 | break; |
eeac7d46 MD |
1283 | case OPT_USERSPACE: |
1284 | opt_userspace = 1; | |
eeac7d46 | 1285 | break; |
0cda4f28 | 1286 | case OPT_LOGLEVEL: |
8005f29a | 1287 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; |
0cda4f28 MD |
1288 | opt_loglevel = poptGetOptArg(pc); |
1289 | break; | |
1290 | case OPT_LOGLEVEL_ONLY: | |
8005f29a | 1291 | opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; |
0cda4f28 | 1292 | opt_loglevel = poptGetOptArg(pc); |
13dce3b7 | 1293 | break; |
679b4943 SM |
1294 | case OPT_LIST_OPTIONS: |
1295 | list_cmd_options(stdout, long_options); | |
679b4943 | 1296 | goto end; |
53a80697 MD |
1297 | case OPT_FILTER: |
1298 | break; | |
fac3366c JI |
1299 | case OPT_EXCLUDE: |
1300 | break; | |
f3ed775e DG |
1301 | default: |
1302 | usage(stderr); | |
1303 | ret = CMD_UNDEFINED; | |
1304 | goto end; | |
1305 | } | |
de044b7a DG |
1306 | |
1307 | /* Validate event type. Multiple event type are not supported. */ | |
1308 | if (event_type == -1) { | |
1309 | event_type = opt_event_type; | |
1310 | } else { | |
1311 | if (event_type != opt_event_type) { | |
1312 | ERR("Multiple event type not supported."); | |
1313 | ret = CMD_ERROR; | |
1314 | goto end; | |
1315 | } | |
1316 | } | |
f3ed775e DG |
1317 | } |
1318 | ||
89476427 JRJ |
1319 | /* Mi check */ |
1320 | if (lttng_opt_mi) { | |
1321 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
1322 | if (!writer) { | |
1323 | ret = -LTTNG_ERR_NOMEM; | |
1324 | goto end; | |
1325 | } | |
1326 | ||
1327 | /* Open command element */ | |
1328 | ret = mi_lttng_writer_command_open(writer, | |
1329 | mi_lttng_element_command_enable_event); | |
1330 | if (ret) { | |
1331 | ret = CMD_ERROR; | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | /* Open output element */ | |
1336 | ret = mi_lttng_writer_open_element(writer, | |
1337 | mi_lttng_element_command_output); | |
1338 | if (ret) { | |
1339 | ret = CMD_ERROR; | |
1340 | goto end; | |
1341 | } | |
1342 | } | |
1343 | ||
f3ed775e DG |
1344 | opt_event_list = (char*) poptGetArg(pc); |
1345 | if (opt_event_list == NULL && opt_enable_all == 0) { | |
1346 | ERR("Missing event name(s).\n"); | |
1347 | usage(stderr); | |
ca1c3607 | 1348 | ret = CMD_ERROR; |
f3ed775e DG |
1349 | goto end; |
1350 | } | |
1351 | ||
cd80958d DG |
1352 | if (!opt_session_name) { |
1353 | session_name = get_session_name(); | |
1354 | if (session_name == NULL) { | |
89476427 JRJ |
1355 | command_ret = CMD_ERROR; |
1356 | success = 0; | |
1357 | goto mi_closing; | |
cd80958d DG |
1358 | } |
1359 | } else { | |
1360 | session_name = opt_session_name; | |
1361 | } | |
1362 | ||
89476427 JRJ |
1363 | command_ret = enable_events(session_name); |
1364 | if (command_ret) { | |
1365 | success = 0; | |
1366 | goto mi_closing; | |
1367 | } | |
1368 | ||
1369 | mi_closing: | |
1370 | /* Mi closing */ | |
1371 | if (lttng_opt_mi) { | |
1372 | /* Close output element */ | |
1373 | ret = mi_lttng_writer_close_element(writer); | |
1374 | if (ret) { | |
1375 | ret = CMD_ERROR; | |
1376 | goto end; | |
1377 | } | |
1378 | ||
1379 | ret = mi_lttng_writer_write_element_bool(writer, | |
1380 | mi_lttng_element_command_success, success); | |
1381 | if (ret) { | |
1382 | ret = CMD_ERROR; | |
1383 | goto end; | |
1384 | } | |
1385 | ||
1386 | /* Command element close */ | |
1387 | ret = mi_lttng_writer_command_close(writer); | |
1388 | if (ret) { | |
1389 | ret = CMD_ERROR; | |
1390 | goto end; | |
1391 | } | |
1392 | } | |
f3ed775e DG |
1393 | |
1394 | end: | |
89476427 JRJ |
1395 | /* Mi clean-up */ |
1396 | if (writer && mi_lttng_writer_destroy(writer)) { | |
1397 | /* Preserve original error code */ | |
1398 | ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL; | |
1399 | } | |
1400 | ||
cd80958d DG |
1401 | if (opt_session_name == NULL) { |
1402 | free(session_name); | |
1403 | } | |
1404 | ||
89476427 JRJ |
1405 | /* Overwrite ret if an error occurred in enable_events */ |
1406 | ret = command_ret ? command_ret : ret; | |
1407 | ||
ca1c3607 | 1408 | poptFreeContext(pc); |
f3ed775e DG |
1409 | return ret; |
1410 | } |