Commit | Line | Data |
---|---|---|
1501a7f3 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #define _GNU_SOURCE | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
1501a7f3 | 20 | #include <assert.h> |
1501a7f3 | 21 | #include <ctype.h> |
1501a7f3 JG |
22 | #include <stdio.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
36f2332b | 25 | #include <inttypes.h> |
dcf266c0 JG |
26 | #include <dirent.h> |
27 | #include <unistd.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
5f75dfa0 | 30 | #include <stdbool.h> |
1501a7f3 JG |
31 | |
32 | #include <common/defaults.h> | |
33 | #include <common/error.h> | |
34 | #include <common/macros.h> | |
35 | #include <common/utils.h> | |
e8fa9fb0 | 36 | #include <common/compat/getenv.h> |
fb198a11 JG |
37 | #include <lttng/lttng-error.h> |
38 | #include <libxml/parser.h> | |
39 | #include <libxml/valid.h> | |
40 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
41 | #include <libxml/tree.h> |
42 | #include <lttng/lttng.h> | |
43 | #include <lttng/snapshot.h> | |
1501a7f3 JG |
44 | |
45 | #include "config.h" | |
36f2332b | 46 | #include "config-internal.h" |
1501a7f3 JG |
47 | |
48 | struct handler_filter_args { | |
49 | const char* section; | |
50 | config_entry_handler_cb handler; | |
51 | void *user_data; | |
52 | }; | |
53 | ||
dcf266c0 JG |
54 | struct session_config_validation_ctx { |
55 | xmlSchemaParserCtxtPtr parser_ctx; | |
56 | xmlSchemaPtr schema; | |
57 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
58 | }; | |
59 | ||
1501a7f3 JG |
60 | const char * const config_str_yes = "yes"; |
61 | const char * const config_str_true = "true"; | |
62 | const char * const config_str_on = "on"; | |
63 | const char * const config_str_no = "no"; | |
64 | const char * const config_str_false = "false"; | |
65 | const char * const config_str_off = "off"; | |
36f2332b | 66 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 67 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
68 | const char * const config_xml_indent_string = "\t"; |
69 | const char * const config_xml_true = "true"; | |
70 | const char * const config_xml_false = "false"; | |
1501a7f3 | 71 | |
fb198a11 JG |
72 | const char * const config_element_channel = "channel"; |
73 | const char * const config_element_channels = "channels"; | |
74 | const char * const config_element_domain = "domain"; | |
75 | const char * const config_element_domains = "domains"; | |
76 | const char * const config_element_event = "event"; | |
77 | const char * const config_element_events = "events"; | |
78 | const char * const config_element_context = "context"; | |
79 | const char * const config_element_contexts = "contexts"; | |
80 | const char * const config_element_attributes = "attributes"; | |
81 | const char * const config_element_exclusion = "exclusion"; | |
82 | const char * const config_element_exclusions = "exclusions"; | |
83 | const char * const config_element_function_attributes = "function_attributes"; | |
84 | const char * const config_element_probe_attributes = "probe_attributes"; | |
85 | const char * const config_element_symbol_name = "symbol_name"; | |
86 | const char * const config_element_address = "address"; | |
87 | const char * const config_element_offset = "offset"; | |
88 | const char * const config_element_name = "name"; | |
89 | const char * const config_element_enabled = "enabled"; | |
90 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
91 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
92 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
93 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
94 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
95 | const char * const config_element_output = "output"; | |
96 | const char * const config_element_output_type = "output_type"; | |
97 | const char * const config_element_tracefile_size = "tracefile_size"; | |
98 | const char * const config_element_tracefile_count = "tracefile_count"; | |
99 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
100 | const char * const config_element_type = "type"; | |
101 | const char * const config_element_buffer_type = "buffer_type"; | |
102 | const char * const config_element_session = "session"; | |
103 | const char * const config_element_sessions = "sessions"; | |
104 | const char * const config_element_perf = "perf"; | |
105 | const char * const config_element_config = "config"; | |
106 | const char * const config_element_started = "started"; | |
107 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
108 | const char * const config_element_loglevel = "loglevel"; | |
109 | const char * const config_element_loglevel_type = "loglevel_type"; | |
110 | const char * const config_element_filter = "filter"; | |
111 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; | |
112 | const char * const config_element_consumer_output = "consumer_output"; | |
113 | const char * const config_element_destination = "destination"; | |
114 | const char * const config_element_path = "path"; | |
115 | const char * const config_element_net_output = "net_output"; | |
116 | const char * const config_element_control_uri = "control_uri"; | |
117 | const char * const config_element_data_uri = "data_uri"; | |
118 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
119 | const char * const config_element_pid = "pid"; |
120 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 121 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
a585578f JR |
122 | const char * const config_element_pid_tracker = "pid_tracker"; |
123 | const char * const config_element_trackers = "trackers"; | |
35460079 JR |
124 | const char * const config_element_targets = "targets"; |
125 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
126 | |
127 | const char * const config_domain_type_kernel = "KERNEL"; | |
128 | const char * const config_domain_type_ust = "UST"; | |
129 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 130 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 131 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
132 | |
133 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
134 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
135 | const char * const config_buffer_type_global = "GLOBAL"; | |
136 | ||
137 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
138 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
139 | ||
140 | const char * const config_output_type_splice = "SPLICE"; | |
141 | const char * const config_output_type_mmap = "MMAP"; | |
142 | ||
143 | const char * const config_loglevel_type_all = "ALL"; | |
144 | const char * const config_loglevel_type_range = "RANGE"; | |
145 | const char * const config_loglevel_type_single = "SINGLE"; | |
146 | ||
147 | const char * const config_event_type_all = "ALL"; | |
148 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
149 | const char * const config_event_type_probe = "PROBE"; | |
150 | const char * const config_event_type_function = "FUNCTION"; | |
151 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
152 | const char * const config_event_type_noop = "NOOP"; | |
153 | const char * const config_event_type_syscall = "SYSCALL"; | |
154 | const char * const config_event_type_kprobe = "KPROBE"; | |
155 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
156 | ||
157 | const char * const config_event_context_pid = "PID"; | |
158 | const char * const config_event_context_procname = "PROCNAME"; | |
159 | const char * const config_event_context_prio = "PRIO"; | |
160 | const char * const config_event_context_nice = "NICE"; | |
161 | const char * const config_event_context_vpid = "VPID"; | |
162 | const char * const config_event_context_tid = "TID"; | |
163 | const char * const config_event_context_vtid = "VTID"; | |
164 | const char * const config_event_context_ppid = "PPID"; | |
165 | const char * const config_event_context_vppid = "VPPID"; | |
166 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
167 | const char * const config_event_context_hostname = "HOSTNAME"; | |
168 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 169 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
fb198a11 | 170 | |
4da99cdc JR |
171 | enum process_event_node_phase { |
172 | CREATION = 0, | |
173 | ENABLE = 1, | |
174 | }; | |
175 | ||
dcf266c0 JG |
176 | struct consumer_output { |
177 | int enabled; | |
178 | char *path; | |
179 | char *control_uri; | |
180 | char *data_uri; | |
181 | }; | |
182 | ||
1501a7f3 JG |
183 | static int config_entry_handler_filter(struct handler_filter_args *args, |
184 | const char *section, const char *name, const char *value) | |
185 | { | |
186 | int ret = 0; | |
187 | struct config_entry entry = { section, name, value }; | |
188 | ||
189 | assert(args); | |
190 | ||
191 | if (!section || !name || !value) { | |
192 | ret = -EIO; | |
193 | goto end; | |
194 | } | |
195 | ||
196 | if (args->section) { | |
197 | if (strcmp(args->section, section)) { | |
198 | goto end; | |
199 | } | |
200 | } | |
201 | ||
202 | ret = args->handler(&entry, args->user_data); | |
203 | end: | |
204 | return ret; | |
205 | } | |
206 | ||
207 | LTTNG_HIDDEN | |
208 | int config_get_section_entries(const char *override_path, const char *section, | |
209 | config_entry_handler_cb handler, void *user_data) | |
210 | { | |
211 | int ret = 0; | |
7ab02a27 | 212 | char *path; |
1501a7f3 JG |
213 | FILE *config_file = NULL; |
214 | struct handler_filter_args filter = { section, handler, user_data }; | |
215 | ||
7ab02a27 DG |
216 | /* First, try system-wide conf. file. */ |
217 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
218 | ||
219 | config_file = fopen(path, "r"); | |
220 | if (config_file) { | |
221 | DBG("Loading daemon conf file at %s", path); | |
222 | /* | |
223 | * Return value is not very important here since error or not, we | |
224 | * continue and try the next possible conf. file. | |
225 | */ | |
226 | (void) ini_parse_file(config_file, | |
227 | (ini_entry_handler) config_entry_handler_filter, | |
228 | (void *) &filter); | |
229 | fclose(config_file); | |
230 | } | |
231 | ||
232 | /* Second is the user local configuration. */ | |
233 | path = utils_get_home_dir(); | |
234 | if (path) { | |
235 | char fullpath[PATH_MAX]; | |
236 | ||
237 | ret = snprintf(fullpath, sizeof(fullpath), | |
238 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
239 | if (ret < 0) { | |
240 | PERROR("snprintf user conf. path"); | |
241 | goto error; | |
242 | } | |
243 | ||
244 | config_file = fopen(fullpath, "r"); | |
245 | if (config_file) { | |
246 | DBG("Loading daemon user conf file at %s", path); | |
247 | /* | |
248 | * Return value is not very important here since error or not, we | |
249 | * continue and try the next possible conf. file. | |
250 | */ | |
251 | (void) ini_parse_file(config_file, | |
252 | (ini_entry_handler) config_entry_handler_filter, | |
253 | (void *) &filter); | |
254 | fclose(config_file); | |
255 | } | |
256 | } | |
257 | ||
258 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
259 | if (override_path) { |
260 | config_file = fopen(override_path, "r"); | |
261 | if (config_file) { | |
7ab02a27 DG |
262 | DBG("Loading daemon command line conf file at %s", override_path); |
263 | (void) ini_parse_file(config_file, | |
264 | (ini_entry_handler) config_entry_handler_filter, | |
265 | (void *) &filter); | |
266 | fclose(config_file); | |
1501a7f3 JG |
267 | } else { |
268 | ERR("Failed to open daemon configuration file at %s", | |
269 | override_path); | |
270 | ret = -ENOENT; | |
7ab02a27 | 271 | goto error; |
1501a7f3 JG |
272 | } |
273 | } | |
274 | ||
7ab02a27 DG |
275 | /* Everything went well. */ |
276 | ret = 0; | |
1501a7f3 | 277 | |
7ab02a27 | 278 | error: |
1501a7f3 JG |
279 | return ret; |
280 | } | |
281 | ||
282 | LTTNG_HIDDEN | |
283 | int config_parse_value(const char *value) | |
284 | { | |
285 | int i, ret = 0; | |
286 | char *endptr, *lower_str; | |
287 | size_t len; | |
288 | unsigned long v; | |
289 | ||
290 | len = strlen(value); | |
291 | if (!len) { | |
292 | ret = -1; | |
293 | goto end; | |
294 | } | |
295 | ||
296 | v = strtoul(value, &endptr, 10); | |
297 | if (endptr != value) { | |
298 | ret = v; | |
299 | goto end; | |
300 | } | |
301 | ||
302 | lower_str = zmalloc(len + 1); | |
303 | if (!lower_str) { | |
304 | PERROR("zmalloc"); | |
305 | ret = -errno; | |
306 | goto end; | |
307 | } | |
308 | ||
309 | for (i = 0; i < len; i++) { | |
310 | lower_str[i] = tolower(value[i]); | |
311 | } | |
312 | ||
313 | if (!strcmp(lower_str, config_str_yes) || | |
314 | !strcmp(lower_str, config_str_true) || | |
315 | !strcmp(lower_str, config_str_on)) { | |
316 | ret = 1; | |
317 | } else if (!strcmp(lower_str, config_str_no) || | |
318 | !strcmp(lower_str, config_str_false) || | |
319 | !strcmp(lower_str, config_str_off)) { | |
320 | ret = 0; | |
321 | } else { | |
322 | ret = -1; | |
323 | } | |
324 | ||
325 | free(lower_str); | |
326 | end: | |
327 | return ret; | |
328 | } | |
36f2332b JG |
329 | |
330 | /* | |
331 | * Returns a xmlChar string which must be released using xmlFree(). | |
332 | */ | |
333 | static xmlChar *encode_string(const char *in_str) | |
334 | { | |
335 | xmlChar *out_str = NULL; | |
336 | xmlCharEncodingHandlerPtr handler; | |
337 | int out_len, ret, in_len; | |
338 | ||
339 | assert(in_str); | |
340 | ||
341 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
342 | if (!handler) { | |
343 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
344 | goto end; | |
345 | } | |
346 | ||
347 | in_len = strlen(in_str); | |
348 | /* | |
79e71bf5 JG |
349 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
350 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 351 | */ |
79e71bf5 | 352 | out_len = (in_len * 4) + 1; |
36f2332b JG |
353 | out_str = xmlMalloc(out_len); |
354 | if (!out_str) { | |
355 | goto end; | |
356 | } | |
357 | ||
358 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
359 | if (ret < 0) { | |
360 | xmlFree(out_str); | |
361 | out_str = NULL; | |
362 | goto end; | |
363 | } | |
364 | ||
365 | /* out_len is now the size of out_str */ | |
366 | out_str[out_len] = '\0'; | |
367 | end: | |
368 | return out_str; | |
369 | } | |
370 | ||
371 | LTTNG_HIDDEN | |
705bb62f | 372 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
373 | { |
374 | int ret; | |
375 | struct config_writer *writer; | |
376 | xmlOutputBufferPtr buffer; | |
377 | ||
378 | writer = zmalloc(sizeof(struct config_writer)); | |
379 | if (!writer) { | |
380 | PERROR("zmalloc config_writer_create"); | |
381 | goto end; | |
382 | } | |
383 | ||
384 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
385 | if (!buffer) { | |
386 | goto error_destroy; | |
387 | } | |
388 | ||
389 | writer->writer = xmlNewTextWriter(buffer); | |
390 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
391 | config_xml_encoding, NULL); | |
392 | if (ret < 0) { | |
393 | goto error_destroy; | |
394 | } | |
395 | ||
396 | ret = xmlTextWriterSetIndentString(writer->writer, | |
397 | BAD_CAST config_xml_indent_string); | |
705bb62f | 398 | if (ret) { |
36f2332b JG |
399 | goto error_destroy; |
400 | } | |
401 | ||
705bb62f JRJ |
402 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
403 | if (ret) { | |
36f2332b JG |
404 | goto error_destroy; |
405 | } | |
406 | ||
407 | end: | |
408 | return writer; | |
409 | error_destroy: | |
410 | config_writer_destroy(writer); | |
411 | return NULL; | |
412 | } | |
413 | ||
414 | LTTNG_HIDDEN | |
415 | int config_writer_destroy(struct config_writer *writer) | |
416 | { | |
417 | int ret = 0; | |
418 | ||
419 | if (!writer) { | |
420 | ret = -EINVAL; | |
421 | goto end; | |
422 | } | |
423 | ||
424 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
425 | WARN("Could not close XML document"); | |
426 | ret = -EIO; | |
427 | } | |
428 | ||
429 | if (writer->writer) { | |
430 | xmlFreeTextWriter(writer->writer); | |
431 | } | |
432 | ||
433 | free(writer); | |
434 | end: | |
435 | return ret; | |
436 | } | |
437 | ||
438 | LTTNG_HIDDEN | |
439 | int config_writer_open_element(struct config_writer *writer, | |
440 | const char *element_name) | |
441 | { | |
442 | int ret; | |
443 | xmlChar *encoded_element_name; | |
444 | ||
445 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
446 | ret = -1; | |
447 | goto end; | |
448 | } | |
449 | ||
450 | encoded_element_name = encode_string(element_name); | |
451 | if (!encoded_element_name) { | |
452 | ret = -1; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
457 | xmlFree(encoded_element_name); | |
458 | end: | |
459 | return ret > 0 ? 0 : ret; | |
460 | } | |
461 | ||
462 | LTTNG_HIDDEN | |
463 | int config_writer_close_element(struct config_writer *writer) | |
464 | { | |
465 | int ret; | |
466 | ||
467 | if (!writer || !writer->writer) { | |
468 | ret = -1; | |
469 | goto end; | |
470 | } | |
471 | ||
472 | ret = xmlTextWriterEndElement(writer->writer); | |
473 | end: | |
474 | return ret > 0 ? 0 : ret; | |
475 | } | |
476 | ||
477 | LTTNG_HIDDEN | |
478 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
479 | const char *element_name, uint64_t value) | |
480 | { | |
481 | int ret; | |
482 | xmlChar *encoded_element_name; | |
483 | ||
484 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
485 | ret = -1; | |
486 | goto end; | |
487 | } | |
488 | ||
489 | encoded_element_name = encode_string(element_name); | |
490 | if (!encoded_element_name) { | |
491 | ret = -1; | |
492 | goto end; | |
493 | } | |
494 | ||
495 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
496 | encoded_element_name, "%" PRIu64, value); | |
497 | xmlFree(encoded_element_name); | |
498 | end: | |
499 | return ret > 0 ? 0 : ret; | |
500 | } | |
501 | ||
502 | LTTNG_HIDDEN | |
503 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
504 | const char *element_name, int64_t value) | |
505 | { | |
506 | int ret; | |
507 | xmlChar *encoded_element_name; | |
508 | ||
509 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
510 | ret = -1; | |
511 | goto end; | |
512 | } | |
513 | ||
514 | encoded_element_name = encode_string(element_name); | |
515 | if (!encoded_element_name) { | |
516 | ret = -1; | |
517 | goto end; | |
518 | } | |
519 | ||
520 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
521 | encoded_element_name, "%" PRIi64, value); | |
522 | xmlFree(encoded_element_name); | |
523 | end: | |
524 | return ret > 0 ? 0 : ret; | |
525 | } | |
526 | ||
527 | LTTNG_HIDDEN | |
528 | int config_writer_write_element_bool(struct config_writer *writer, | |
529 | const char *element_name, int value) | |
530 | { | |
531 | return config_writer_write_element_string(writer, element_name, | |
532 | value ? config_xml_true : config_xml_false); | |
533 | } | |
534 | ||
535 | LTTNG_HIDDEN | |
536 | int config_writer_write_element_string(struct config_writer *writer, | |
537 | const char *element_name, const char *value) | |
538 | { | |
539 | int ret; | |
540 | xmlChar *encoded_element_name = NULL; | |
541 | xmlChar *encoded_value = NULL; | |
542 | ||
543 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
544 | !value) { | |
545 | ret = -1; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | encoded_element_name = encode_string(element_name); | |
550 | if (!encoded_element_name) { | |
551 | ret = -1; | |
552 | goto end; | |
553 | } | |
554 | ||
555 | encoded_value = encode_string(value); | |
556 | if (!encoded_value) { | |
557 | ret = -1; | |
558 | goto end; | |
559 | } | |
560 | ||
561 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 562 | encoded_value); |
36f2332b JG |
563 | end: |
564 | xmlFree(encoded_element_name); | |
565 | xmlFree(encoded_value); | |
566 | return ret > 0 ? 0 : ret; | |
567 | } | |
dcf266c0 JG |
568 | |
569 | static | |
570 | void xml_error_handler(void *ctx, const char *format, ...) | |
571 | { | |
572 | char *errMsg; | |
573 | va_list args; | |
574 | int ret; | |
575 | ||
576 | va_start(args, format); | |
577 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 578 | va_end(args); |
dcf266c0 JG |
579 | if (ret == -1) { |
580 | ERR("String allocation failed in xml error handler"); | |
581 | return; | |
582 | } | |
dcf266c0 JG |
583 | |
584 | fprintf(stderr, "XML Error: %s", errMsg); | |
585 | free(errMsg); | |
586 | } | |
587 | ||
588 | static | |
589 | void fini_session_config_validation_ctx( | |
590 | struct session_config_validation_ctx *ctx) | |
591 | { | |
592 | if (ctx->parser_ctx) { | |
593 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
594 | } | |
595 | ||
596 | if (ctx->schema) { | |
597 | xmlSchemaFree(ctx->schema); | |
598 | } | |
599 | ||
600 | if (ctx->schema_validation_ctx) { | |
601 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
602 | } | |
603 | ||
604 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
605 | } | |
606 | ||
54e399cb JG |
607 | static |
608 | char *get_session_config_xsd_path() | |
609 | { | |
610 | char *xsd_path; | |
e8fa9fb0 | 611 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
612 | size_t base_path_len; |
613 | size_t max_path_len; | |
614 | ||
615 | if (!base_path) { | |
616 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
617 | } | |
618 | ||
619 | base_path_len = strlen(base_path); | |
620 | max_path_len = base_path_len + | |
621 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
622 | xsd_path = zmalloc(max_path_len); | |
623 | if (!xsd_path) { | |
624 | goto end; | |
625 | } | |
626 | ||
627 | strncpy(xsd_path, base_path, max_path_len); | |
628 | if (xsd_path[base_path_len - 1] != '/') { | |
629 | xsd_path[base_path_len++] = '/'; | |
630 | } | |
631 | ||
632 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
633 | max_path_len - base_path_len); | |
634 | end: | |
635 | return xsd_path; | |
636 | } | |
637 | ||
dcf266c0 JG |
638 | static |
639 | int init_session_config_validation_ctx( | |
640 | struct session_config_validation_ctx *ctx) | |
641 | { | |
642 | int ret; | |
54e399cb JG |
643 | char *xsd_path = get_session_config_xsd_path(); |
644 | ||
645 | if (!xsd_path) { | |
646 | ret = -LTTNG_ERR_NOMEM; | |
647 | goto end; | |
648 | } | |
dcf266c0 | 649 | |
54e399cb | 650 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
651 | if (!ctx->parser_ctx) { |
652 | ERR("XSD parser context creation failed"); | |
653 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
654 | goto end; | |
655 | } | |
656 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
657 | xml_error_handler, NULL); | |
658 | ||
659 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
660 | if (!ctx->schema) { | |
661 | ERR("XSD parsing failed"); | |
662 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
663 | goto end; | |
664 | } | |
665 | ||
666 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
667 | if (!ctx->schema_validation_ctx) { | |
668 | ERR("XSD validation context creation failed"); | |
669 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
670 | goto end; | |
671 | } | |
672 | ||
673 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
674 | xml_error_handler, NULL); | |
675 | ret = 0; | |
676 | ||
677 | end: | |
678 | if (ret) { | |
679 | fini_session_config_validation_ctx(ctx); | |
680 | } | |
681 | ||
54e399cb | 682 | free(xsd_path); |
dcf266c0 JG |
683 | return ret; |
684 | } | |
685 | ||
686 | static | |
687 | int parse_uint(xmlChar *str, uint64_t *val) | |
688 | { | |
689 | int ret; | |
690 | char *endptr; | |
691 | ||
692 | if (!str || !val) { | |
693 | ret = -1; | |
694 | goto end; | |
695 | } | |
696 | ||
697 | *val = strtoull((const char *) str, &endptr, 10); | |
698 | if (!endptr || *endptr) { | |
699 | ret = -1; | |
700 | } else { | |
701 | ret = 0; | |
702 | } | |
703 | ||
704 | end: | |
705 | return ret; | |
706 | } | |
707 | ||
708 | static | |
709 | int parse_int(xmlChar *str, int64_t *val) | |
710 | { | |
711 | int ret; | |
712 | char *endptr; | |
713 | ||
714 | if (!str || !val) { | |
715 | ret = -1; | |
716 | goto end; | |
717 | } | |
718 | ||
719 | *val = strtoll((const char *) str, &endptr, 10); | |
720 | if (!endptr || *endptr) { | |
721 | ret = -1; | |
722 | } else { | |
723 | ret = 0; | |
724 | } | |
725 | ||
726 | end: | |
727 | return ret; | |
728 | } | |
729 | ||
730 | static | |
731 | int parse_bool(xmlChar *str, int *val) | |
732 | { | |
733 | int ret = 0; | |
734 | ||
735 | if (!str || !val) { | |
736 | ret = -1; | |
737 | goto end; | |
738 | } | |
739 | ||
740 | if (!strcmp((const char *) str, config_xml_true)) { | |
741 | *val = 1; | |
742 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
743 | *val = 0; | |
744 | } else { | |
745 | WARN("Invalid boolean value encoutered (%s).", | |
746 | (const char *) str); | |
747 | ret = -1; | |
748 | } | |
749 | end: | |
750 | return ret; | |
751 | } | |
752 | ||
753 | static | |
754 | int get_domain_type(xmlChar *domain) | |
755 | { | |
756 | int ret; | |
757 | ||
758 | if (!domain) { | |
759 | goto error; | |
760 | } | |
761 | ||
762 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
763 | ret = LTTNG_DOMAIN_KERNEL; | |
764 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
765 | ret = LTTNG_DOMAIN_UST; | |
766 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
767 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
768 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
769 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
770 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
771 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
772 | } else { |
773 | goto error; | |
774 | } | |
775 | ||
776 | return ret; | |
777 | error: | |
778 | return -1; | |
779 | } | |
780 | ||
781 | static | |
782 | int get_buffer_type(xmlChar *buffer_type) | |
783 | { | |
784 | int ret; | |
785 | ||
786 | if (!buffer_type) { | |
787 | goto error; | |
788 | } | |
789 | ||
790 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
791 | ret = LTTNG_BUFFER_GLOBAL; | |
792 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
793 | ret = LTTNG_BUFFER_PER_UID; | |
794 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
795 | ret = LTTNG_BUFFER_PER_PID; | |
796 | } else { | |
797 | goto error; | |
798 | } | |
799 | ||
800 | return ret; | |
801 | error: | |
802 | return -1; | |
803 | } | |
804 | ||
805 | static | |
806 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
807 | { | |
808 | int ret; | |
809 | ||
810 | if (!overwrite_mode) { | |
811 | goto error; | |
812 | } | |
813 | ||
814 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
815 | ret = 1; | |
816 | } else if (!strcmp((char *) overwrite_mode, | |
817 | config_overwrite_mode_discard)) { | |
818 | ret = 0; | |
819 | } else { | |
820 | goto error; | |
821 | } | |
822 | ||
823 | return ret; | |
824 | error: | |
825 | return -1; | |
826 | } | |
827 | ||
828 | static | |
829 | int get_output_type(xmlChar *output_type) | |
830 | { | |
831 | int ret; | |
832 | ||
833 | if (!output_type) { | |
834 | goto error; | |
835 | } | |
836 | ||
837 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
838 | ret = LTTNG_EVENT_MMAP; | |
839 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
840 | ret = LTTNG_EVENT_SPLICE; | |
841 | } else { | |
842 | goto error; | |
843 | } | |
844 | ||
845 | return ret; | |
846 | error: | |
847 | return -1; | |
848 | } | |
849 | ||
850 | static | |
851 | int get_event_type(xmlChar *event_type) | |
852 | { | |
853 | int ret; | |
854 | ||
855 | if (!event_type) { | |
856 | goto error; | |
857 | } | |
858 | ||
859 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
860 | ret = LTTNG_EVENT_ALL; | |
861 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
862 | ret = LTTNG_EVENT_TRACEPOINT; | |
863 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
864 | ret = LTTNG_EVENT_PROBE; | |
865 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
866 | ret = LTTNG_EVENT_FUNCTION; | |
867 | } else if (!strcmp((char *) event_type, | |
868 | config_event_type_function_entry)) { | |
869 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
870 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
871 | ret = LTTNG_EVENT_NOOP; | |
872 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
873 | ret = LTTNG_EVENT_SYSCALL; | |
874 | } else { | |
875 | goto error; | |
876 | } | |
877 | ||
878 | return ret; | |
879 | error: | |
880 | return -1; | |
881 | } | |
882 | ||
883 | static | |
884 | int get_loglevel_type(xmlChar *loglevel_type) | |
885 | { | |
886 | int ret; | |
887 | ||
888 | if (!loglevel_type) { | |
889 | goto error; | |
890 | } | |
891 | ||
892 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
893 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
894 | } else if (!strcmp((char *) loglevel_type, | |
895 | config_loglevel_type_range)) { | |
896 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
897 | } else if (!strcmp((char *) loglevel_type, | |
898 | config_loglevel_type_single)) { | |
899 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
900 | } else { | |
901 | goto error; | |
902 | } | |
903 | ||
904 | return ret; | |
905 | error: | |
906 | return -1; | |
907 | } | |
908 | ||
909 | /* | |
910 | * Return the context type or -1 on error. | |
911 | */ | |
912 | static | |
913 | int get_context_type(xmlChar *context_type) | |
914 | { | |
915 | int ret; | |
916 | ||
917 | if (!context_type) { | |
918 | goto error; | |
919 | } | |
920 | ||
921 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
922 | ret = LTTNG_EVENT_CONTEXT_PID; | |
923 | } else if (!strcmp((char *) context_type, | |
924 | config_event_context_procname)) { | |
925 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
926 | } else if (!strcmp((char *) context_type, | |
927 | config_event_context_prio)) { | |
928 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
929 | } else if (!strcmp((char *) context_type, | |
930 | config_event_context_nice)) { | |
931 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
932 | } else if (!strcmp((char *) context_type, | |
933 | config_event_context_vpid)) { | |
934 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
935 | } else if (!strcmp((char *) context_type, | |
936 | config_event_context_tid)) { | |
937 | ret = LTTNG_EVENT_CONTEXT_TID; | |
938 | } else if (!strcmp((char *) context_type, | |
939 | config_event_context_vtid)) { | |
940 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
941 | } else if (!strcmp((char *) context_type, | |
942 | config_event_context_ppid)) { | |
943 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
944 | } else if (!strcmp((char *) context_type, | |
945 | config_event_context_vppid)) { | |
946 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
947 | } else if (!strcmp((char *) context_type, | |
948 | config_event_context_pthread_id)) { | |
949 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
950 | } else if (!strcmp((char *) context_type, | |
951 | config_event_context_hostname)) { | |
952 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
953 | } else if (!strcmp((char *) context_type, | |
954 | config_event_context_ip)) { | |
955 | ret = LTTNG_EVENT_CONTEXT_IP; | |
956 | } else { | |
957 | goto error; | |
958 | } | |
959 | ||
960 | return ret; | |
961 | error: | |
962 | return -1; | |
963 | } | |
964 | ||
965 | static | |
966 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
967 | { | |
968 | int ret; | |
969 | xmlNodePtr node; | |
970 | ||
971 | for (node = xmlFirstElementChild(domain_node); node; | |
972 | node = xmlNextElementSibling(node)) { | |
973 | if (!strcmp((const char *) node->name, config_element_type)) { | |
974 | /* domain type */ | |
975 | xmlChar *node_content = xmlNodeGetContent(node); | |
976 | if (!node_content) { | |
977 | ret = -LTTNG_ERR_NOMEM; | |
978 | goto end; | |
979 | } | |
980 | ||
981 | ret = get_domain_type(node_content); | |
982 | free(node_content); | |
983 | if (ret < 0) { | |
984 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
985 | goto end; | |
986 | } | |
987 | ||
988 | domain->type = ret; | |
989 | } else if (!strcmp((const char *) node->name, | |
990 | config_element_buffer_type)) { | |
991 | /* buffer type */ | |
992 | xmlChar *node_content = xmlNodeGetContent(node); | |
993 | if (!node_content) { | |
994 | ret = -LTTNG_ERR_NOMEM; | |
995 | goto end; | |
996 | } | |
997 | ||
998 | ret = get_buffer_type(node_content); | |
999 | free(node_content); | |
1000 | if (ret < 0) { | |
1001 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1002 | goto end; | |
1003 | } | |
1004 | ||
1005 | domain->buf_type = ret; | |
1006 | } | |
1007 | } | |
1008 | ret = 0; | |
1009 | end: | |
1010 | return ret; | |
1011 | } | |
1012 | ||
1013 | static | |
1014 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1015 | char **data_uri) | |
1016 | { | |
1017 | xmlNodePtr node; | |
1018 | ||
1019 | for (node = xmlFirstElementChild(net_output_node); node; | |
1020 | node = xmlNextElementSibling(node)) { | |
1021 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1022 | /* control_uri */ | |
1023 | *control_uri = (char *) xmlNodeGetContent(node); | |
1024 | if (!*control_uri) { | |
1025 | break; | |
1026 | } | |
1027 | } else { | |
1028 | /* data_uri */ | |
1029 | *data_uri = (char *) xmlNodeGetContent(node); | |
1030 | if (!*data_uri) { | |
1031 | break; | |
1032 | } | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1037 | } | |
1038 | ||
1039 | static | |
1040 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1041 | struct consumer_output *output) | |
1042 | { | |
1043 | int ret; | |
1044 | xmlNodePtr node; | |
1045 | ||
1046 | assert(output); | |
1047 | ||
1048 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1049 | node = xmlNextElementSibling(node)) { | |
1050 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1051 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1052 | ||
1053 | /* enabled */ | |
1054 | if (!enabled_str) { | |
1055 | ret = -LTTNG_ERR_NOMEM; | |
1056 | goto end; | |
1057 | } | |
1058 | ||
1059 | ret = parse_bool(enabled_str, &output->enabled); | |
1060 | free(enabled_str); | |
1061 | if (ret) { | |
1062 | goto end; | |
1063 | } | |
1064 | } else { | |
1065 | xmlNodePtr output_type_node; | |
1066 | ||
1067 | /* destination */ | |
1068 | output_type_node = xmlFirstElementChild(node); | |
1069 | if (!output_type_node) { | |
1070 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1071 | goto end; | |
1072 | } | |
1073 | ||
1074 | if (!strcmp((const char *) output_type_node->name, | |
1075 | config_element_path)) { | |
1076 | /* path */ | |
1077 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1078 | if (!output->path) { | |
1079 | ret = -LTTNG_ERR_NOMEM; | |
1080 | goto end; | |
1081 | } | |
1082 | } else { | |
1083 | /* net_output */ | |
1084 | ret = get_net_output_uris(output_type_node, | |
1085 | &output->control_uri, &output->data_uri); | |
1086 | if (ret) { | |
1087 | goto end; | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | } | |
1092 | ret = 0; | |
1093 | ||
1094 | end: | |
1095 | if (ret) { | |
1096 | free(output->path); | |
1097 | free(output->control_uri); | |
1098 | free(output->data_uri); | |
1099 | memset(output, 0, sizeof(struct consumer_output)); | |
1100 | } | |
1101 | return ret; | |
1102 | } | |
1103 | ||
1104 | static | |
064e8bfd JG |
1105 | int create_session_net_output(const char *name, const char *control_uri, |
1106 | const char *data_uri) | |
dcf266c0 JG |
1107 | { |
1108 | int ret; | |
1109 | struct lttng_handle *handle; | |
1110 | const char *uri = NULL; | |
1111 | ||
1112 | assert(name); | |
dcf266c0 | 1113 | |
064e8bfd | 1114 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1115 | if (!handle) { |
1116 | ret = -LTTNG_ERR_NOMEM; | |
1117 | goto end; | |
1118 | } | |
1119 | ||
1120 | if (!control_uri || !data_uri) { | |
1121 | uri = control_uri ? control_uri : data_uri; | |
1122 | control_uri = uri; | |
1123 | data_uri = uri; | |
1124 | } | |
1125 | ||
1126 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1127 | lttng_destroy_handle(handle); | |
1128 | end: | |
1129 | return ret; | |
1130 | } | |
1131 | ||
1132 | static | |
1133 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1134 | { | |
1135 | int ret; | |
1136 | xmlNodePtr node = NULL; | |
1137 | xmlNodePtr snapshot_output_list_node; | |
1138 | xmlNodePtr snapshot_output_node; | |
1139 | ||
1140 | assert(session_name); | |
1141 | ||
1142 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1143 | if (ret) { | |
1144 | goto end; | |
1145 | } | |
1146 | ||
1147 | if (!output_node) { | |
1148 | goto end; | |
1149 | } | |
1150 | ||
1151 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1152 | ||
1153 | /* Parse and create snapshot outputs */ | |
1154 | ||
1155 | for (snapshot_output_node = | |
1156 | xmlFirstElementChild(snapshot_output_list_node); | |
1157 | snapshot_output_node; snapshot_output_node = | |
1158 | xmlNextElementSibling(snapshot_output_node)) { | |
1159 | char *name = NULL; | |
1160 | uint64_t max_size = UINT64_MAX; | |
1161 | struct consumer_output output = { 0 }; | |
1162 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1163 | ||
1164 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1165 | node = xmlNextElementSibling(node)) { | |
1166 | if (!strcmp((const char *) node->name, | |
1167 | config_element_name)) { | |
1168 | /* name */ | |
1169 | name = (char *) xmlNodeGetContent(node); | |
1170 | if (!name) { | |
1171 | ret = -LTTNG_ERR_NOMEM; | |
1172 | goto error_snapshot_output; | |
1173 | } | |
1174 | } else if (!strcmp((const char *) node->name, | |
1175 | config_element_max_size)) { | |
1176 | xmlChar *content = xmlNodeGetContent(node); | |
1177 | ||
1178 | /* max_size */ | |
1179 | if (!content) { | |
1180 | ret = -LTTNG_ERR_NOMEM; | |
1181 | goto error_snapshot_output; | |
1182 | } | |
1183 | ret = parse_uint(content, &max_size); | |
1184 | free(content); | |
1185 | if (ret) { | |
1186 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1187 | goto error_snapshot_output; | |
1188 | } | |
1189 | } else { | |
1190 | /* consumer_output */ | |
1191 | ret = process_consumer_output(node, &output); | |
1192 | if (ret) { | |
1193 | goto error_snapshot_output; | |
1194 | } | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | snapshot_output = lttng_snapshot_output_create(); | |
1199 | if (!snapshot_output) { | |
1200 | ret = -LTTNG_ERR_NOMEM; | |
1201 | goto error_snapshot_output; | |
1202 | } | |
1203 | ||
1204 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1205 | if (ret) { | |
1206 | goto error_snapshot_output; | |
1207 | } | |
1208 | ||
1209 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1210 | if (ret) { | |
1211 | goto error_snapshot_output; | |
1212 | } | |
1213 | ||
1214 | if (output.path) { | |
1215 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1216 | snapshot_output); | |
1217 | if (ret) { | |
1218 | goto error_snapshot_output; | |
1219 | } | |
1220 | } else { | |
1221 | if (output.control_uri) { | |
1222 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1223 | snapshot_output); | |
1224 | if (ret) { | |
1225 | goto error_snapshot_output; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (output.data_uri) { | |
1230 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1231 | snapshot_output); | |
1232 | if (ret) { | |
1233 | goto error_snapshot_output; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1239 | error_snapshot_output: | |
1240 | free(name); | |
1241 | free(output.path); | |
1242 | free(output.control_uri); | |
1243 | free(output.data_uri); | |
1244 | lttng_snapshot_output_destroy(snapshot_output); | |
1245 | if (ret) { | |
1246 | goto end; | |
1247 | } | |
1248 | } | |
1249 | end: | |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | static | |
1254 | int create_session(const char *name, | |
1255 | struct lttng_domain *kernel_domain, | |
1256 | struct lttng_domain *ust_domain, | |
1257 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1258 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1259 | xmlNodePtr output_node, |
1260 | uint64_t live_timer_interval) | |
1261 | { | |
1262 | int ret; | |
1263 | struct consumer_output output = { 0 }; | |
1264 | xmlNodePtr consumer_output_node; | |
1265 | ||
1266 | assert(name); | |
dcf266c0 JG |
1267 | |
1268 | if (output_node) { | |
1269 | consumer_output_node = xmlFirstElementChild(output_node); | |
1270 | if (!consumer_output_node) { | |
1271 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1272 | goto end; | |
1273 | } | |
1274 | ||
1275 | if (strcmp((const char *) consumer_output_node->name, | |
1276 | config_element_consumer_output)) { | |
1277 | WARN("Invalid output type, expected %s node", | |
1278 | config_element_consumer_output); | |
1279 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1280 | goto end; | |
1281 | } | |
1282 | ||
1283 | ret = process_consumer_output(consumer_output_node, &output); | |
1284 | if (ret) { | |
1285 | goto end; | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | if (live_timer_interval != UINT64_MAX && | |
1290 | !output.control_uri && !output.data_uri) { | |
1291 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1292 | goto end; | |
1293 | } | |
1294 | ||
1295 | if (output.control_uri || output.data_uri) { | |
dcf266c0 JG |
1296 | /* network destination */ |
1297 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1298 | /* |
1299 | * URLs are provided for sure since the test above make sure that | |
1300 | * with a live timer the data and control URIs are provided. So, | |
1301 | * NULL is passed here and will be set right after. | |
1302 | */ | |
1303 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1304 | } else { |
1305 | ret = lttng_create_session(name, NULL); | |
1306 | } | |
1307 | if (ret) { | |
1308 | goto end; | |
1309 | } | |
1310 | ||
064e8bfd JG |
1311 | ret = create_session_net_output(name, output.control_uri, |
1312 | output.data_uri); | |
1313 | if (ret) { | |
1314 | goto end; | |
dcf266c0 | 1315 | } |
064e8bfd | 1316 | |
dcf266c0 JG |
1317 | } else { |
1318 | /* either local output or no output */ | |
1319 | ret = lttng_create_session(name, output.path); | |
1320 | if (ret) { | |
1321 | goto end; | |
1322 | } | |
1323 | } | |
1324 | end: | |
1325 | free(output.path); | |
1326 | free(output.control_uri); | |
1327 | free(output.data_uri); | |
1328 | return ret; | |
1329 | } | |
1330 | static | |
1331 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1332 | struct lttng_event_probe_attr *attr) | |
1333 | { | |
1334 | int ret; | |
1335 | ||
1336 | assert(probe_attribute_node); | |
1337 | assert(attr); | |
1338 | ||
1339 | if (!strcmp((const char *) probe_attribute_node->name, | |
1340 | config_element_address)) { | |
1341 | xmlChar *content; | |
1342 | uint64_t addr = 0; | |
1343 | ||
1344 | /* addr */ | |
1345 | content = xmlNodeGetContent(probe_attribute_node); | |
1346 | if (!content) { | |
1347 | ret = -LTTNG_ERR_NOMEM; | |
1348 | goto end; | |
1349 | } | |
1350 | ||
1351 | ret = parse_uint(content, &addr); | |
1352 | free(content); | |
1353 | if (ret) { | |
1354 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1355 | goto end; | |
1356 | } | |
1357 | ||
1358 | attr->addr = addr; | |
1359 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1360 | config_element_offset)) { | |
1361 | xmlChar *content; | |
1362 | uint64_t offset = 0; | |
1363 | ||
1364 | /* offset */ | |
1365 | content = xmlNodeGetContent(probe_attribute_node); | |
1366 | if (!content) { | |
1367 | ret = -LTTNG_ERR_NOMEM; | |
1368 | goto end; | |
1369 | } | |
1370 | ||
1371 | ret = parse_uint(content, &offset); | |
1372 | free(content); | |
1373 | if (ret) { | |
1374 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | attr->offset = offset; | |
1379 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1380 | config_element_symbol_name)) { | |
1381 | xmlChar *content; | |
1382 | size_t name_len; | |
1383 | ||
1384 | /* symbol_name */ | |
1385 | content = xmlNodeGetContent(probe_attribute_node); | |
1386 | if (!content) { | |
1387 | ret = -LTTNG_ERR_NOMEM; | |
1388 | goto end; | |
1389 | } | |
1390 | ||
1391 | name_len = strlen((char *) content); | |
1392 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1393 | WARN("symbol_name too long."); | |
1394 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1395 | free(content); | |
1396 | goto end; | |
1397 | } | |
1398 | ||
1399 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1400 | free(content); | |
1401 | } | |
1402 | ret = 0; | |
1403 | end: | |
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | static | |
1408 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
4da99cdc | 1409 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1410 | { |
4da99cdc | 1411 | int ret = 0, i; |
dcf266c0 JG |
1412 | xmlNodePtr node; |
1413 | struct lttng_event event; | |
1414 | char **exclusions = NULL; | |
1415 | unsigned long exclusion_count = 0; | |
1416 | char *filter_expression = NULL; | |
1417 | ||
1418 | assert(event_node); | |
1419 | assert(handle); | |
1420 | assert(channel_name); | |
1421 | ||
1422 | memset(&event, 0, sizeof(event)); | |
1423 | ||
039c1d19 JG |
1424 | /* Initialize default log level which varies by domain */ |
1425 | switch (handle->domain.type) | |
1426 | { | |
1427 | case LTTNG_DOMAIN_JUL: | |
1428 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1429 | break; | |
1430 | case LTTNG_DOMAIN_LOG4J: | |
1431 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1432 | break; | |
1433 | case LTTNG_DOMAIN_PYTHON: | |
1434 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1435 | break; | |
1436 | case LTTNG_DOMAIN_UST: | |
1437 | case LTTNG_DOMAIN_KERNEL: | |
1438 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1439 | break; | |
1440 | default: | |
1441 | assert(0); | |
1442 | } | |
1443 | ||
dcf266c0 JG |
1444 | for (node = xmlFirstElementChild(event_node); node; |
1445 | node = xmlNextElementSibling(node)) { | |
1446 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1447 | xmlChar *content; | |
1448 | size_t name_len; | |
1449 | ||
1450 | /* name */ | |
1451 | content = xmlNodeGetContent(node); | |
1452 | if (!content) { | |
1453 | ret = -LTTNG_ERR_NOMEM; | |
1454 | goto end; | |
1455 | } | |
1456 | ||
1457 | name_len = strlen((char *) content); | |
1458 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1459 | WARN("Channel name too long."); | |
1460 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1461 | free(content); | |
1462 | goto end; | |
1463 | } | |
1464 | ||
1465 | strncpy(event.name, (const char *) content, name_len); | |
1466 | free(content); | |
1467 | } else if (!strcmp((const char *) node->name, | |
1468 | config_element_enabled)) { | |
1469 | xmlChar *content = xmlNodeGetContent(node); | |
1470 | ||
1471 | /* enabled */ | |
1472 | if (!content) { | |
1473 | ret = -LTTNG_ERR_NOMEM; | |
1474 | goto end; | |
1475 | } | |
1476 | ||
1477 | ret = parse_bool(content, &event.enabled); | |
1478 | free(content); | |
1479 | if (ret) { | |
1480 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1481 | goto end; | |
1482 | } | |
1483 | } else if (!strcmp((const char *) node->name, | |
1484 | config_element_type)) { | |
1485 | xmlChar *content = xmlNodeGetContent(node); | |
1486 | ||
1487 | /* type */ | |
1488 | if (!content) { | |
1489 | ret = -LTTNG_ERR_NOMEM; | |
1490 | goto end; | |
1491 | } | |
1492 | ||
1493 | ret = get_event_type(content); | |
1494 | free(content); | |
1495 | if (ret < 0) { | |
1496 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1497 | goto end; | |
1498 | } | |
1499 | ||
1500 | event.type = ret; | |
1501 | } else if (!strcmp((const char *) node->name, | |
1502 | config_element_loglevel_type)) { | |
1503 | xmlChar *content = xmlNodeGetContent(node); | |
1504 | ||
1505 | /* loglevel_type */ | |
1506 | if (!content) { | |
1507 | ret = -LTTNG_ERR_NOMEM; | |
1508 | goto end; | |
1509 | } | |
1510 | ||
1511 | ret = get_loglevel_type(content); | |
1512 | free(content); | |
1513 | if (ret < 0) { | |
1514 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1515 | goto end; | |
1516 | } | |
1517 | ||
1518 | event.loglevel_type = ret; | |
1519 | } else if (!strcmp((const char *) node->name, | |
1520 | config_element_loglevel)) { | |
1521 | xmlChar *content; | |
1522 | int64_t loglevel = 0; | |
1523 | ||
1524 | /* loglevel */ | |
1525 | content = xmlNodeGetContent(node); | |
1526 | if (!content) { | |
1527 | ret = -LTTNG_ERR_NOMEM; | |
1528 | goto end; | |
1529 | } | |
1530 | ||
1531 | ret = parse_int(content, &loglevel); | |
1532 | free(content); | |
1533 | if (ret) { | |
1534 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1535 | goto end; | |
1536 | } | |
1537 | ||
1538 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1539 | WARN("loglevel out of range."); | |
1540 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1541 | goto end; | |
1542 | } | |
1543 | ||
1544 | event.loglevel = loglevel; | |
1545 | } else if (!strcmp((const char *) node->name, | |
1546 | config_element_filter)) { | |
1547 | xmlChar *content = | |
1548 | xmlNodeGetContent(node); | |
1549 | ||
1550 | /* filter */ | |
1551 | if (!content) { | |
1552 | ret = -LTTNG_ERR_NOMEM; | |
1553 | goto end; | |
1554 | } | |
1555 | ||
6bd1b5e0 | 1556 | free(filter_expression); |
dcf266c0 JG |
1557 | filter_expression = strdup((char *) content); |
1558 | free(content); | |
1559 | if (!filter_expression) { | |
1560 | ret = -LTTNG_ERR_NOMEM; | |
1561 | goto end; | |
1562 | } | |
1563 | } else if (!strcmp((const char *) node->name, | |
1564 | config_element_exclusions)) { | |
1565 | xmlNodePtr exclusion_node; | |
1566 | int exclusion_index = 0; | |
1567 | ||
1568 | /* exclusions */ | |
1569 | if (exclusions) { | |
1570 | /* | |
1571 | * Exclusions has already been initialized, | |
1572 | * invalid file. | |
1573 | */ | |
1574 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1575 | goto end; | |
1576 | } | |
1577 | ||
1578 | exclusion_count = xmlChildElementCount(node); | |
1579 | if (!exclusion_count) { | |
1580 | continue; | |
1581 | } | |
1582 | ||
1583 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1584 | if (!exclusions) { | |
1585 | exclusion_count = 0; | |
1586 | ret = -LTTNG_ERR_NOMEM; | |
1587 | goto end; | |
1588 | } | |
1589 | ||
1590 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1591 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1592 | xmlChar *content = | |
1593 | xmlNodeGetContent(exclusion_node); | |
1594 | ||
1595 | if (!content) { | |
1596 | ret = -LTTNG_ERR_NOMEM; | |
1597 | goto end; | |
1598 | } | |
1599 | ||
1600 | exclusions[exclusion_index] = strdup((const char *) content); | |
1601 | free(content); | |
1602 | if (!exclusions[exclusion_index]) { | |
1603 | ret = -LTTNG_ERR_NOMEM; | |
1604 | goto end; | |
1605 | } | |
1606 | exclusion_index++; | |
1607 | } | |
1608 | ||
1609 | event.exclusion = 1; | |
1610 | } else if (!strcmp((const char *) node->name, | |
1611 | config_element_attributes)) { | |
1612 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1613 | ||
1614 | /* attributes */ | |
1615 | if (!attribute_node) { | |
1616 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1617 | goto end; | |
1618 | } | |
1619 | ||
1620 | if (!strcmp((const char *) node->name, | |
1621 | config_element_probe_attributes)) { | |
1622 | xmlNodePtr probe_attribute_node; | |
1623 | ||
1624 | /* probe_attributes */ | |
1625 | for (probe_attribute_node = | |
1626 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1627 | probe_attribute_node = xmlNextElementSibling( | |
1628 | probe_attribute_node)) { | |
1629 | ||
1630 | ret = process_probe_attribute_node(probe_attribute_node, | |
1631 | &event.attr.probe); | |
1632 | if (ret) { | |
1633 | goto end; | |
1634 | } | |
1635 | } | |
1636 | } else { | |
1637 | size_t sym_len; | |
1638 | xmlChar *content; | |
1639 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1640 | ||
1641 | /* function_attributes */ | |
1642 | content = xmlNodeGetContent(symbol_node); | |
1643 | if (!content) { | |
1644 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1645 | goto end; | |
1646 | } | |
1647 | ||
1648 | sym_len = strlen((char *) content); | |
1649 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1650 | WARN("Function name too long."); | |
1651 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1652 | free(content); | |
1653 | goto end; | |
1654 | } | |
1655 | ||
1656 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1657 | sym_len); | |
1658 | free(content); | |
1659 | } | |
1660 | } | |
1661 | } | |
1662 | ||
4da99cdc JR |
1663 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1664 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1665 | filter_expression, exclusion_count, exclusions); | |
1666 | if (ret < 0) { | |
1667 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1668 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1669 | goto end; | |
1670 | } | |
065321e9 | 1671 | } |
dcf266c0 JG |
1672 | end: |
1673 | for (i = 0; i < exclusion_count; i++) { | |
1674 | free(exclusions[i]); | |
1675 | } | |
1676 | ||
1677 | free(exclusions); | |
1678 | free(filter_expression); | |
1679 | return ret; | |
1680 | } | |
1681 | ||
1682 | static | |
1683 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1684 | const char *channel_name) | |
1685 | { | |
1686 | int ret = 0; | |
4da99cdc | 1687 | struct lttng_event event; |
dcf266c0 JG |
1688 | xmlNodePtr node; |
1689 | ||
1690 | assert(events_node); | |
1691 | assert(handle); | |
1692 | assert(channel_name); | |
1693 | ||
1694 | for (node = xmlFirstElementChild(events_node); node; | |
1695 | node = xmlNextElementSibling(node)) { | |
4da99cdc | 1696 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1697 | if (ret) { |
1698 | goto end; | |
1699 | } | |
1700 | } | |
4da99cdc JR |
1701 | |
1702 | /* | |
1703 | * Disable all events to enable only the necessary events. | |
1704 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1705 | * force this approach. | |
1706 | */ | |
1707 | memset(&event, 0, sizeof(event)); | |
1708 | event.loglevel = -1; | |
1709 | event.type = LTTNG_EVENT_ALL; | |
1710 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1711 | if (ret) { | |
1712 | goto end; | |
1713 | } | |
1714 | ||
1715 | for (node = xmlFirstElementChild(events_node); node; | |
1716 | node = xmlNextElementSibling(node)) { | |
1717 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1718 | if (ret) { | |
1719 | goto end; | |
1720 | } | |
1721 | } | |
1722 | ||
dcf266c0 JG |
1723 | end: |
1724 | return ret; | |
1725 | } | |
1726 | ||
1727 | static | |
1728 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1729 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1730 | xmlNodePtr *events_node) | |
1731 | { | |
1732 | int ret; | |
1733 | ||
1734 | assert(attr_node); | |
1735 | assert(channel); | |
1736 | assert(contexts_node); | |
1737 | assert(events_node); | |
1738 | ||
1739 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1740 | xmlChar *content; | |
1741 | size_t name_len; | |
1742 | ||
1743 | /* name */ | |
1744 | content = xmlNodeGetContent(attr_node); | |
1745 | if (!content) { | |
1746 | ret = -LTTNG_ERR_NOMEM; | |
1747 | goto end; | |
1748 | } | |
1749 | ||
1750 | name_len = strlen((char *) content); | |
1751 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1752 | WARN("Channel name too long."); | |
1753 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1754 | free(content); | |
1755 | goto end; | |
1756 | } | |
1757 | ||
1758 | strncpy(channel->name, (const char *) content, name_len); | |
1759 | free(content); | |
1760 | } else if (!strcmp((const char *) attr_node->name, | |
1761 | config_element_enabled)) { | |
1762 | xmlChar *content; | |
1763 | int enabled; | |
1764 | ||
1765 | /* enabled */ | |
1766 | content = xmlNodeGetContent(attr_node); | |
1767 | if (!content) { | |
1768 | ret = -LTTNG_ERR_NOMEM; | |
1769 | goto end; | |
1770 | } | |
1771 | ||
1772 | ret = parse_bool(content, &enabled); | |
1773 | free(content); | |
1774 | if (ret) { | |
1775 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1776 | goto end; | |
1777 | } | |
1778 | ||
1779 | channel->enabled = enabled; | |
1780 | } else if (!strcmp((const char *) attr_node->name, | |
1781 | config_element_overwrite_mode)) { | |
1782 | xmlChar *content; | |
1783 | ||
1784 | /* overwrite_mode */ | |
1785 | content = xmlNodeGetContent(attr_node); | |
1786 | if (!content) { | |
1787 | ret = -LTTNG_ERR_NOMEM; | |
1788 | goto end; | |
1789 | } | |
1790 | ||
1791 | ret = get_overwrite_mode(content); | |
1792 | free(content); | |
1793 | if (ret < 0) { | |
1794 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1795 | goto end; | |
1796 | } | |
1797 | ||
1798 | channel->attr.overwrite = ret; | |
1799 | } else if (!strcmp((const char *) attr_node->name, | |
1800 | config_element_subbuf_size)) { | |
1801 | xmlChar *content; | |
1802 | ||
1803 | /* subbuffer_size */ | |
1804 | content = xmlNodeGetContent(attr_node); | |
1805 | if (!content) { | |
1806 | ret = -LTTNG_ERR_NOMEM; | |
1807 | goto end; | |
1808 | } | |
1809 | ||
1810 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1811 | free(content); | |
1812 | if (ret) { | |
1813 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1814 | goto end; | |
1815 | } | |
1816 | } else if (!strcmp((const char *) attr_node->name, | |
1817 | config_element_num_subbuf)) { | |
1818 | xmlChar *content; | |
1819 | ||
1820 | /* subbuffer_count */ | |
1821 | content = xmlNodeGetContent(attr_node); | |
1822 | if (!content) { | |
1823 | ret = -LTTNG_ERR_NOMEM; | |
1824 | goto end; | |
1825 | } | |
1826 | ||
1827 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1828 | free(content); | |
1829 | if (ret) { | |
1830 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1831 | goto end; | |
1832 | } | |
1833 | } else if (!strcmp((const char *) attr_node->name, | |
1834 | config_element_switch_timer_interval)) { | |
1835 | xmlChar *content; | |
1836 | uint64_t switch_timer_interval = 0; | |
1837 | ||
1838 | /* switch_timer_interval */ | |
1839 | content = xmlNodeGetContent(attr_node); | |
1840 | if (!content) { | |
1841 | ret = -LTTNG_ERR_NOMEM; | |
1842 | goto end; | |
1843 | } | |
1844 | ||
1845 | ret = parse_uint(content, &switch_timer_interval); | |
1846 | free(content); | |
1847 | if (ret) { | |
1848 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1849 | goto end; | |
1850 | } | |
1851 | ||
1852 | if (switch_timer_interval > UINT_MAX) { | |
1853 | WARN("switch_timer_interval out of range."); | |
1854 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1855 | goto end; | |
1856 | } | |
1857 | ||
1858 | channel->attr.switch_timer_interval = | |
1859 | switch_timer_interval; | |
1860 | } else if (!strcmp((const char *) attr_node->name, | |
1861 | config_element_read_timer_interval)) { | |
1862 | xmlChar *content; | |
1863 | uint64_t read_timer_interval = 0; | |
1864 | ||
1865 | /* read_timer_interval */ | |
1866 | content = xmlNodeGetContent(attr_node); | |
1867 | if (!content) { | |
1868 | ret = -LTTNG_ERR_NOMEM; | |
1869 | goto end; | |
1870 | } | |
1871 | ||
1872 | ret = parse_uint(content, &read_timer_interval); | |
1873 | free(content); | |
1874 | if (ret) { | |
1875 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1876 | goto end; | |
1877 | } | |
1878 | ||
1879 | if (read_timer_interval > UINT_MAX) { | |
1880 | WARN("read_timer_interval out of range."); | |
1881 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1882 | goto end; | |
1883 | } | |
1884 | ||
1885 | channel->attr.read_timer_interval = | |
1886 | read_timer_interval; | |
1887 | } else if (!strcmp((const char *) attr_node->name, | |
1888 | config_element_output_type)) { | |
1889 | xmlChar *content; | |
1890 | ||
1891 | /* output_type */ | |
1892 | content = xmlNodeGetContent(attr_node); | |
1893 | if (!content) { | |
1894 | ret = -LTTNG_ERR_NOMEM; | |
1895 | goto end; | |
1896 | } | |
1897 | ||
1898 | ret = get_output_type(content); | |
1899 | free(content); | |
1900 | if (ret < 0) { | |
1901 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1902 | goto end; | |
1903 | } | |
1904 | ||
1905 | channel->attr.output = ret; | |
1906 | } else if (!strcmp((const char *) attr_node->name, | |
1907 | config_element_tracefile_size)) { | |
1908 | xmlChar *content; | |
1909 | ||
1910 | /* tracefile_size */ | |
1911 | content = xmlNodeGetContent(attr_node); | |
1912 | if (!content) { | |
1913 | ret = -LTTNG_ERR_NOMEM; | |
1914 | goto end; | |
1915 | } | |
1916 | ||
1917 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1918 | free(content); | |
1919 | if (ret) { | |
1920 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1921 | goto end; | |
1922 | } | |
1923 | } else if (!strcmp((const char *) attr_node->name, | |
1924 | config_element_tracefile_count)) { | |
1925 | xmlChar *content; | |
1926 | ||
1927 | /* tracefile_count */ | |
1928 | content = xmlNodeGetContent(attr_node); | |
1929 | if (!content) { | |
1930 | ret = -LTTNG_ERR_NOMEM; | |
1931 | goto end; | |
1932 | } | |
1933 | ||
1934 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1935 | free(content); | |
1936 | if (ret) { | |
1937 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1938 | goto end; | |
1939 | } | |
1940 | } else if (!strcmp((const char *) attr_node->name, | |
1941 | config_element_live_timer_interval)) { | |
1942 | xmlChar *content; | |
1943 | uint64_t live_timer_interval = 0; | |
1944 | ||
1945 | /* live_timer_interval */ | |
1946 | content = xmlNodeGetContent(attr_node); | |
1947 | if (!content) { | |
1948 | ret = -LTTNG_ERR_NOMEM; | |
1949 | goto end; | |
1950 | } | |
1951 | ||
1952 | ret = parse_uint(content, &live_timer_interval); | |
1953 | free(content); | |
1954 | if (ret) { | |
1955 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1956 | goto end; | |
1957 | } | |
1958 | ||
1959 | if (live_timer_interval > UINT_MAX) { | |
1960 | WARN("live_timer_interval out of range."); | |
1961 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
1965 | channel->attr.live_timer_interval = | |
1966 | live_timer_interval; | |
1967 | } else if (!strcmp((const char *) attr_node->name, | |
1968 | config_element_events)) { | |
1969 | /* events */ | |
1970 | *events_node = attr_node; | |
1971 | } else { | |
1972 | /* contexts */ | |
1973 | *contexts_node = attr_node; | |
1974 | } | |
1975 | ret = 0; | |
1976 | end: | |
1977 | return ret; | |
1978 | } | |
1979 | ||
1980 | static | |
1981 | int process_context_node(xmlNodePtr context_node, | |
1982 | struct lttng_handle *handle, const char *channel_name) | |
1983 | { | |
1984 | int ret; | |
1985 | struct lttng_event_context context; | |
1986 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
1987 | ||
1988 | assert(handle); | |
1989 | assert(channel_name); | |
1990 | ||
1991 | if (!context_child_node) { | |
1992 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1993 | goto end; | |
1994 | } | |
1995 | ||
1996 | memset(&context, 0, sizeof(context)); | |
1997 | ||
1998 | if (!strcmp((const char *) context_child_node->name, | |
1999 | config_element_type)) { | |
2000 | /* type */ | |
2001 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
2002 | if (!content) { | |
2003 | ret = -LTTNG_ERR_NOMEM; | |
2004 | goto end; | |
2005 | } | |
2006 | ||
2007 | ret = get_context_type(content); | |
2008 | free(content); | |
2009 | if (ret < 0) { | |
2010 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2011 | goto end; | |
2012 | } | |
2013 | ||
2014 | context.ctx = ret; | |
2015 | } else { | |
2016 | xmlNodePtr perf_attr_node; | |
2017 | ||
2018 | /* perf */ | |
14ce5bd8 JG |
2019 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2020 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2021 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2022 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2023 | perf_attr_node; perf_attr_node = | |
2024 | xmlNextElementSibling(perf_attr_node)) { | |
2025 | if (!strcmp((const char *) perf_attr_node->name, | |
2026 | config_element_type)) { | |
2027 | xmlChar *content; | |
2028 | uint64_t type = 0; | |
2029 | ||
2030 | /* type */ | |
2031 | content = xmlNodeGetContent(perf_attr_node); | |
2032 | if (!content) { | |
2033 | ret = -LTTNG_ERR_NOMEM; | |
2034 | goto end; | |
2035 | } | |
2036 | ||
2037 | ret = parse_uint(content, &type); | |
2038 | free(content); | |
2039 | if (ret) { | |
2040 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2041 | goto end; | |
2042 | } | |
2043 | ||
2044 | if (type > UINT32_MAX) { | |
2045 | WARN("perf context type out of range."); | |
2046 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2047 | goto end; | |
2048 | } | |
2049 | ||
2050 | context.u.perf_counter.type = type; | |
2051 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2052 | config_element_config)) { | |
2053 | xmlChar *content; | |
2054 | uint64_t config = 0; | |
2055 | ||
2056 | /* config */ | |
2057 | content = xmlNodeGetContent(perf_attr_node); | |
2058 | if (!content) { | |
2059 | ret = -LTTNG_ERR_NOMEM; | |
2060 | goto end; | |
2061 | } | |
2062 | ||
2063 | ret = parse_uint(content, &config); | |
2064 | free(content); | |
2065 | if (ret) { | |
2066 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2067 | goto end; | |
2068 | } | |
2069 | ||
2070 | context.u.perf_counter.config = config; | |
2071 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2072 | config_element_name)) { | |
2073 | xmlChar *content; | |
2074 | size_t name_len; | |
2075 | ||
2076 | /* name */ | |
2077 | content = xmlNodeGetContent(perf_attr_node); | |
2078 | if (!content) { | |
2079 | ret = -LTTNG_ERR_NOMEM; | |
2080 | goto end; | |
2081 | } | |
2082 | ||
2083 | name_len = strlen((char *) content); | |
2084 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2085 | WARN("perf context name too long."); | |
2086 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2087 | free(content); | |
2088 | goto end; | |
2089 | } | |
2090 | ||
2091 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2092 | name_len); | |
2093 | free(content); | |
2094 | } | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
2099 | end: | |
2100 | return ret; | |
2101 | } | |
2102 | ||
2103 | static | |
2104 | int process_contexts_node(xmlNodePtr contexts_node, | |
2105 | struct lttng_handle *handle, const char *channel_name) | |
2106 | { | |
2107 | int ret = 0; | |
2108 | xmlNodePtr context_node; | |
2109 | ||
2110 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2111 | context_node = xmlNextElementSibling(context_node)) { | |
2112 | ret = process_context_node(context_node, handle, channel_name); | |
2113 | if (ret) { | |
2114 | goto end; | |
2115 | } | |
2116 | } | |
2117 | end: | |
2118 | return ret; | |
2119 | } | |
2120 | ||
35460079 JR |
2121 | static |
2122 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2123 | struct lttng_handle *handle) | |
2124 | { | |
2125 | int ret, child; | |
2126 | xmlNodePtr targets_node = NULL; | |
2127 | xmlNodePtr node; | |
2128 | ||
2129 | assert(handle); | |
2130 | assert(pid_tracker_node); | |
2131 | /* get the targets node */ | |
2132 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2133 | node = xmlNextElementSibling(node)) { | |
2134 | if (!strcmp((const char *) node->name, | |
2135 | config_element_targets)) { | |
2136 | targets_node = node; | |
2137 | break; | |
2138 | } | |
2139 | } | |
2140 | ||
2141 | if (!targets_node) { | |
2142 | ret = LTTNG_ERR_INVALID; | |
2143 | goto end; | |
2144 | } | |
2145 | ||
2146 | /* Go through all pid_target node */ | |
2147 | child = xmlChildElementCount(targets_node); | |
2148 | if (child == 0) { | |
2149 | /* The session is explicitly set to target nothing. */ | |
2150 | ret = lttng_untrack_pid(handle, -1); | |
2151 | if (ret) { | |
2152 | goto end; | |
2153 | } | |
2154 | } | |
2155 | for (node = xmlFirstElementChild(targets_node); node; | |
2156 | node = xmlNextElementSibling(node)) { | |
2157 | xmlNodePtr pid_target_node = node; | |
2158 | ||
2159 | /* get pid node and track it */ | |
2160 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2161 | node = xmlNextElementSibling(node)) { | |
2162 | if (!strcmp((const char *) node->name, | |
2163 | config_element_pid)) { | |
2164 | int64_t pid; | |
2165 | xmlChar *content = NULL; | |
2166 | ||
2167 | content = xmlNodeGetContent(node); | |
2168 | if (!content) { | |
2169 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2170 | goto end; | |
2171 | } | |
2172 | ||
2173 | ret = parse_int(content, &pid); | |
2174 | free(content); | |
2175 | if (ret) { | |
2176 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2177 | goto end; | |
2178 | } | |
2179 | ||
2180 | ret = lttng_track_pid(handle, (int) pid); | |
2181 | if (ret) { | |
2182 | goto end; | |
2183 | } | |
2184 | } | |
2185 | } | |
2186 | node = pid_target_node; | |
2187 | } | |
2188 | ||
2189 | end: | |
2190 | return ret; | |
2191 | } | |
2192 | ||
2193 | ||
dcf266c0 JG |
2194 | static |
2195 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2196 | { | |
2197 | int ret; | |
2198 | struct lttng_domain domain = { 0 }; | |
2199 | struct lttng_handle *handle = NULL; | |
2200 | xmlNodePtr channels_node = NULL; | |
35460079 JR |
2201 | xmlNodePtr trackers_node = NULL; |
2202 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2203 | xmlNodePtr node; |
2204 | ||
2205 | assert(session_name); | |
2206 | ||
2207 | ret = init_domain(domain_node, &domain); | |
2208 | if (ret) { | |
2209 | goto end; | |
2210 | } | |
2211 | ||
2212 | handle = lttng_create_handle(session_name, &domain); | |
2213 | if (!handle) { | |
2214 | ret = -LTTNG_ERR_NOMEM; | |
2215 | goto end; | |
2216 | } | |
2217 | ||
2218 | /* get the channels node */ | |
2219 | for (node = xmlFirstElementChild(domain_node); node; | |
2220 | node = xmlNextElementSibling(node)) { | |
2221 | if (!strcmp((const char *) node->name, | |
2222 | config_element_channels)) { | |
2223 | channels_node = node; | |
2224 | break; | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | if (!channels_node) { | |
2229 | goto end; | |
2230 | } | |
2231 | ||
2232 | /* create all channels */ | |
2233 | for (node = xmlFirstElementChild(channels_node); node; | |
2234 | node = xmlNextElementSibling(node)) { | |
2235 | struct lttng_channel channel; | |
2236 | xmlNodePtr contexts_node = NULL; | |
2237 | xmlNodePtr events_node = NULL; | |
2238 | xmlNodePtr channel_attr_node; | |
2239 | ||
2240 | memset(&channel, 0, sizeof(channel)); | |
2241 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2242 | ||
2243 | for (channel_attr_node = xmlFirstElementChild(node); | |
2244 | channel_attr_node; channel_attr_node = | |
2245 | xmlNextElementSibling(channel_attr_node)) { | |
2246 | ret = process_channel_attr_node(channel_attr_node, | |
2247 | &channel, &contexts_node, &events_node); | |
2248 | if (ret) { | |
2249 | goto end; | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | ret = lttng_enable_channel(handle, &channel); | |
2254 | if (ret < 0) { | |
2255 | goto end; | |
2256 | } | |
2257 | ||
2258 | ret = process_events_node(events_node, handle, channel.name); | |
2259 | if (ret) { | |
2260 | goto end; | |
2261 | } | |
2262 | ||
2263 | ret = process_contexts_node(contexts_node, handle, | |
2264 | channel.name); | |
2265 | if (ret) { | |
2266 | goto end; | |
2267 | } | |
2268 | } | |
35460079 JR |
2269 | |
2270 | /* get the trackers node */ | |
2271 | for (node = xmlFirstElementChild(domain_node); node; | |
2272 | node = xmlNextElementSibling(node)) { | |
2273 | if (!strcmp((const char *) node->name, | |
2274 | config_element_trackers)) { | |
2275 | trackers_node = node; | |
2276 | break; | |
2277 | } | |
2278 | } | |
2279 | ||
2280 | if (!trackers_node) { | |
2281 | goto end; | |
2282 | } | |
2283 | ||
2284 | for (node = xmlFirstElementChild(trackers_node); node; | |
2285 | node = xmlNextElementSibling(node)) { | |
2286 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2287 | pid_tracker_node = node; | |
2288 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2289 | if (ret) { | |
2290 | goto end; | |
2291 | } | |
2292 | } | |
2293 | } | |
2294 | ||
2295 | if (!pid_tracker_node) { | |
2296 | lttng_track_pid(handle, -1); | |
2297 | } | |
2298 | ||
dcf266c0 JG |
2299 | end: |
2300 | lttng_destroy_handle(handle); | |
2301 | return ret; | |
2302 | } | |
2303 | ||
2304 | static | |
2305 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2306 | int override) | |
2307 | { | |
2308 | int ret, started = -1, snapshot_mode = -1; | |
2309 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2310 | xmlChar *name = NULL; |
9e7c9f56 | 2311 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2312 | xmlNodePtr domains_node = NULL; |
2313 | xmlNodePtr output_node = NULL; | |
2314 | xmlNodePtr node; | |
2315 | struct lttng_domain *kernel_domain = NULL; | |
2316 | struct lttng_domain *ust_domain = NULL; | |
2317 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2318 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2319 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2320 | |
2321 | for (node = xmlFirstElementChild(session_node); node; | |
2322 | node = xmlNextElementSibling(node)) { | |
2323 | if (!name && !strcmp((const char *) node->name, | |
2324 | config_element_name)) { | |
2325 | /* name */ | |
2326 | xmlChar *node_content = xmlNodeGetContent(node); | |
2327 | if (!node_content) { | |
2328 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2329 | goto error; |
dcf266c0 JG |
2330 | } |
2331 | ||
d324faf7 | 2332 | name = node_content; |
dcf266c0 JG |
2333 | } else if (!domains_node && !strcmp((const char *) node->name, |
2334 | config_element_domains)) { | |
2335 | /* domains */ | |
2336 | domains_node = node; | |
2337 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2338 | config_element_started)) { | |
2339 | /* started */ | |
2340 | xmlChar *node_content = xmlNodeGetContent(node); | |
2341 | if (!node_content) { | |
2342 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2343 | goto error; |
dcf266c0 JG |
2344 | } |
2345 | ||
2346 | ret = parse_bool(node_content, &started); | |
2347 | free(node_content); | |
2348 | if (ret) { | |
2349 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2350 | goto error; |
dcf266c0 JG |
2351 | } |
2352 | } else if (!output_node && !strcmp((const char *) node->name, | |
2353 | config_element_output)) { | |
2354 | /* output */ | |
2355 | output_node = node; | |
9e7c9f56 JR |
2356 | } else if (!shm_path && !strcmp((const char *) node->name, |
2357 | config_element_shared_memory_path)) { | |
2358 | /* shared memory path */ | |
2359 | xmlChar *node_content = xmlNodeGetContent(node); | |
2360 | if (!node_content) { | |
2361 | ret = -LTTNG_ERR_NOMEM; | |
2362 | goto error; | |
2363 | } | |
2364 | ||
2365 | shm_path = node_content; | |
dcf266c0 JG |
2366 | } else { |
2367 | /* attributes, snapshot_mode or live_timer_interval */ | |
2368 | xmlNodePtr attributes_child = | |
2369 | xmlFirstElementChild(node); | |
2370 | ||
2371 | if (!strcmp((const char *) attributes_child->name, | |
2372 | config_element_snapshot_mode)) { | |
2373 | /* snapshot_mode */ | |
2374 | xmlChar *snapshot_mode_content = | |
2375 | xmlNodeGetContent(attributes_child); | |
2376 | if (!snapshot_mode_content) { | |
2377 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2378 | goto error; |
dcf266c0 JG |
2379 | } |
2380 | ||
2381 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2382 | free(snapshot_mode_content); | |
2383 | if (ret) { | |
2384 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2385 | goto error; |
dcf266c0 JG |
2386 | } |
2387 | } else { | |
2388 | /* live_timer_interval */ | |
2389 | xmlChar *timer_interval_content = | |
2390 | xmlNodeGetContent(attributes_child); | |
2391 | if (!timer_interval_content) { | |
2392 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2393 | goto error; |
dcf266c0 JG |
2394 | } |
2395 | ||
2396 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2397 | free(timer_interval_content); | |
2398 | if (ret) { | |
2399 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2400 | goto error; |
dcf266c0 JG |
2401 | } |
2402 | } | |
2403 | } | |
2404 | } | |
2405 | ||
2406 | if (!name) { | |
2407 | /* Mandatory attribute, as defined in the session XSD */ | |
2408 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2409 | goto error; |
dcf266c0 JG |
2410 | } |
2411 | ||
d324faf7 | 2412 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2413 | /* This is not the session we are looking for */ |
c2da8cde DG |
2414 | ret = -LTTNG_ERR_NO_SESSION; |
2415 | goto error; | |
dcf266c0 JG |
2416 | } |
2417 | ||
2418 | /* Init domains to create the session handles */ | |
2419 | for (node = xmlFirstElementChild(domains_node); node; | |
2420 | node = xmlNextElementSibling(node)) { | |
2421 | struct lttng_domain *domain; | |
2422 | ||
2423 | domain = zmalloc(sizeof(*domain)); | |
2424 | if (!domain) { | |
2425 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2426 | goto error; |
dcf266c0 JG |
2427 | } |
2428 | ||
2429 | ret = init_domain(node, domain); | |
2430 | if (ret) { | |
2431 | goto domain_init_error; | |
2432 | } | |
2433 | ||
2434 | switch (domain->type) { | |
2435 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2436 | if (kernel_domain) { |
2437 | /* Same domain seen twice, invalid! */ | |
2438 | goto domain_init_error; | |
2439 | } | |
dcf266c0 JG |
2440 | kernel_domain = domain; |
2441 | break; | |
2442 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2443 | if (ust_domain) { |
2444 | /* Same domain seen twice, invalid! */ | |
2445 | goto domain_init_error; | |
2446 | } | |
dcf266c0 JG |
2447 | ust_domain = domain; |
2448 | break; | |
2449 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2450 | if (jul_domain) { |
2451 | /* Same domain seen twice, invalid! */ | |
2452 | goto domain_init_error; | |
2453 | } | |
dcf266c0 JG |
2454 | jul_domain = domain; |
2455 | break; | |
5cdb6027 DG |
2456 | case LTTNG_DOMAIN_LOG4J: |
2457 | if (log4j_domain) { | |
2458 | /* Same domain seen twice, invalid! */ | |
2459 | goto domain_init_error; | |
2460 | } | |
2461 | log4j_domain = domain; | |
2462 | break; | |
0e115563 DG |
2463 | case LTTNG_DOMAIN_PYTHON: |
2464 | if (python_domain) { | |
2465 | /* Same domain seen twice, invalid! */ | |
2466 | goto domain_init_error; | |
2467 | } | |
2468 | python_domain = domain; | |
2469 | break; | |
dcf266c0 JG |
2470 | default: |
2471 | WARN("Invalid domain type"); | |
2472 | goto domain_init_error; | |
2473 | } | |
2474 | continue; | |
2475 | domain_init_error: | |
2476 | free(domain); | |
2477 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2478 | goto error; |
dcf266c0 JG |
2479 | } |
2480 | ||
2481 | if (override) { | |
2482 | /* Destroy session if it exists */ | |
d324faf7 | 2483 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2484 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2485 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2486 | goto error; |
dcf266c0 JG |
2487 | } |
2488 | } | |
2489 | ||
2490 | /* Create session type depending on output type */ | |
2491 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2492 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2493 | } else if (live_timer_interval && |
2494 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2495 | ret = create_session((const char *) name, kernel_domain, |
2496 | ust_domain, jul_domain, log4j_domain, | |
2497 | output_node, live_timer_interval); | |
dcf266c0 JG |
2498 | } else { |
2499 | /* regular session */ | |
d324faf7 JG |
2500 | ret = create_session((const char *) name, kernel_domain, |
2501 | ust_domain, jul_domain, log4j_domain, | |
2502 | output_node, UINT64_MAX); | |
dcf266c0 | 2503 | } |
dcf266c0 | 2504 | if (ret) { |
c2da8cde | 2505 | goto error; |
dcf266c0 JG |
2506 | } |
2507 | ||
9e7c9f56 JR |
2508 | if (shm_path) { |
2509 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2510 | (const char *) shm_path); |
9e7c9f56 JR |
2511 | if (ret) { |
2512 | goto error; | |
2513 | } | |
2514 | } | |
2515 | ||
dcf266c0 JG |
2516 | for (node = xmlFirstElementChild(domains_node); node; |
2517 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2518 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2519 | if (ret) { |
2520 | goto end; | |
2521 | } | |
2522 | } | |
2523 | ||
2524 | if (started) { | |
d324faf7 | 2525 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2526 | if (ret) { |
2527 | goto end; | |
2528 | } | |
2529 | } | |
c2da8cde | 2530 | |
dcf266c0 | 2531 | end: |
b2579dc1 | 2532 | if (ret < 0) { |
d324faf7 JG |
2533 | ERR("Failed to load session %s: %s", (const char *) name, |
2534 | lttng_strerror(ret)); | |
2535 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2536 | } |
2537 | ||
c2da8cde | 2538 | error: |
dcf266c0 JG |
2539 | free(kernel_domain); |
2540 | free(ust_domain); | |
2541 | free(jul_domain); | |
5cdb6027 | 2542 | free(log4j_domain); |
135a3893 | 2543 | free(python_domain); |
d324faf7 | 2544 | xmlFree(name); |
9e7c9f56 | 2545 | xmlFree(shm_path); |
dcf266c0 JG |
2546 | return ret; |
2547 | } | |
2548 | ||
cf53c06d DG |
2549 | /* |
2550 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2551 | * Return -1 if the path is EPERM. | |
2552 | */ | |
2553 | static int validate_file_read_creds(const char *path) | |
2554 | { | |
2555 | int ret; | |
2556 | ||
2557 | assert(path); | |
2558 | ||
2559 | /* Can we read the file. */ | |
2560 | ret = access(path, R_OK); | |
2561 | if (!ret) { | |
2562 | goto valid; | |
2563 | } | |
2564 | if (errno == EACCES) { | |
2565 | return -1; | |
2566 | } else { | |
2567 | /* Invalid. */ | |
2568 | return 0; | |
2569 | } | |
2570 | valid: | |
2571 | return 1; | |
2572 | } | |
2573 | ||
dcf266c0 JG |
2574 | static |
2575 | int load_session_from_file(const char *path, const char *session_name, | |
2576 | struct session_config_validation_ctx *validation_ctx, int override) | |
2577 | { | |
2578 | int ret, session_found = !session_name; | |
2579 | xmlDocPtr doc = NULL; | |
2580 | xmlNodePtr sessions_node; | |
2581 | xmlNodePtr session_node; | |
dcf266c0 JG |
2582 | |
2583 | assert(path); | |
2584 | assert(validation_ctx); | |
2585 | ||
cf53c06d DG |
2586 | ret = validate_file_read_creds(path); |
2587 | if (ret != 1) { | |
2588 | if (ret == -1) { | |
2589 | ret = -LTTNG_ERR_EPERM; | |
2590 | } else { | |
2591 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2592 | } | |
dcf266c0 JG |
2593 | goto end; |
2594 | } | |
2595 | ||
2596 | doc = xmlParseFile(path); | |
2597 | if (!doc) { | |
2598 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2599 | goto end; | |
2600 | } | |
2601 | ||
2602 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2603 | if (ret) { | |
2604 | ERR("Session configuration file validation failed"); | |
2605 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2606 | goto end; | |
2607 | } | |
2608 | ||
2609 | sessions_node = xmlDocGetRootElement(doc); | |
2610 | if (!sessions_node) { | |
2611 | goto end; | |
2612 | } | |
2613 | ||
2614 | for (session_node = xmlFirstElementChild(sessions_node); | |
2615 | session_node; session_node = | |
2616 | xmlNextElementSibling(session_node)) { | |
2617 | ret = process_session_node(session_node, | |
2618 | session_name, override); | |
2619 | if (session_name && ret == 0) { | |
2620 | /* Target session found and loaded */ | |
2621 | session_found = 1; | |
2622 | break; | |
2623 | } | |
2624 | } | |
2625 | end: | |
2626 | xmlFreeDoc(doc); | |
2627 | if (!ret) { | |
a96bc65d | 2628 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2629 | } |
2630 | return ret; | |
2631 | } | |
2632 | ||
60f70355 JG |
2633 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2634 | static | |
2635 | struct dirent *alloc_dirent(const char *path) | |
2636 | { | |
2637 | size_t len; | |
2638 | long name_max; | |
2639 | struct dirent *entry; | |
2640 | ||
2641 | name_max = pathconf(path, _PC_NAME_MAX); | |
2642 | if (name_max == -1) { | |
2643 | name_max = PATH_MAX; | |
2644 | } | |
2645 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2646 | entry = zmalloc(len); | |
2647 | return entry; | |
2648 | } | |
2649 | ||
dcf266c0 JG |
2650 | static |
2651 | int load_session_from_path(const char *path, const char *session_name, | |
2652 | struct session_config_validation_ctx *validation_ctx, int override) | |
2653 | { | |
2654 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2655 | DIR *directory = NULL; |
2656 | ||
2657 | assert(path); | |
2658 | assert(validation_ctx); | |
2659 | ||
4af16958 DG |
2660 | directory = opendir(path); |
2661 | if (!directory) { | |
11143783 DG |
2662 | switch (errno) { |
2663 | case ENOTDIR: | |
0f0a81b5 DG |
2664 | /* Try the file loading. */ |
2665 | break; | |
11143783 DG |
2666 | case ENOENT: |
2667 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2668 | goto end; | |
2669 | default: | |
0f0a81b5 DG |
2670 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2671 | goto end; | |
4af16958 | 2672 | } |
dcf266c0 | 2673 | } |
4af16958 | 2674 | if (directory) { |
dcf266c0 JG |
2675 | struct dirent *entry; |
2676 | struct dirent *result; | |
2677 | char *file_path = NULL; | |
2678 | size_t path_len = strlen(path); | |
2679 | ||
2680 | if (path_len >= PATH_MAX) { | |
2681 | ret = -LTTNG_ERR_INVALID; | |
2682 | goto end; | |
2683 | } | |
2684 | ||
60f70355 | 2685 | entry = alloc_dirent(path); |
dcf266c0 JG |
2686 | if (!entry) { |
2687 | ret = -LTTNG_ERR_NOMEM; | |
2688 | goto end; | |
2689 | } | |
2690 | ||
dcf266c0 JG |
2691 | file_path = zmalloc(PATH_MAX); |
2692 | if (!file_path) { | |
2693 | ret = -LTTNG_ERR_NOMEM; | |
2694 | free(entry); | |
2695 | goto end; | |
2696 | } | |
2697 | ||
2698 | strncpy(file_path, path, path_len); | |
2699 | if (file_path[path_len - 1] != '/') { | |
2700 | file_path[path_len++] = '/'; | |
2701 | } | |
2702 | ||
4af16958 | 2703 | ret = 0; |
dcf266c0 JG |
2704 | /* Search for *.lttng files */ |
2705 | while (!readdir_r(directory, entry, &result) && result) { | |
2706 | size_t file_name_len = strlen(result->d_name); | |
2707 | ||
2708 | if (file_name_len <= | |
2709 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2710 | continue; | |
2711 | } | |
2712 | ||
431f702e | 2713 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2714 | continue; |
2715 | } | |
2716 | ||
2717 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2718 | result->d_name + file_name_len - sizeof( | |
2719 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2720 | continue; | |
2721 | } | |
2722 | ||
2723 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2724 | file_path[path_len + file_name_len] = '\0'; | |
2725 | ||
2726 | ret = load_session_from_file(file_path, session_name, | |
2727 | validation_ctx, override); | |
2728 | if (session_name && !ret) { | |
2729 | session_found = 1; | |
2730 | break; | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | free(entry); | |
2735 | free(file_path); | |
2736 | } else { | |
2737 | ret = load_session_from_file(path, session_name, | |
2738 | validation_ctx, override); | |
2739 | if (ret) { | |
2740 | goto end; | |
2741 | } else { | |
2742 | session_found = 1; | |
2743 | } | |
2744 | } | |
2745 | ||
2746 | end: | |
2747 | if (directory) { | |
2748 | if (closedir(directory)) { | |
2749 | PERROR("closedir"); | |
2750 | } | |
2751 | } | |
2752 | ||
5f75dfa0 JG |
2753 | if (session_found) { |
2754 | ret = 0; | |
dcf266c0 JG |
2755 | } |
2756 | ||
2757 | return ret; | |
2758 | } | |
2759 | ||
ab38c13f DG |
2760 | /* |
2761 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2762 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2763 | */ |
2764 | static int validate_path_creds(const char *path) | |
2765 | { | |
2766 | int ret, uid = getuid(); | |
2767 | struct stat buf; | |
2768 | ||
2769 | assert(path); | |
2770 | ||
cf53c06d | 2771 | if (uid == 0) { |
ab38c13f DG |
2772 | goto valid; |
2773 | } | |
2774 | ||
2775 | ret = stat(path, &buf); | |
2776 | if (ret < 0) { | |
2777 | if (errno != ENOENT) { | |
2778 | PERROR("stat"); | |
2779 | } | |
2780 | ret = -LTTNG_ERR_INVALID; | |
2781 | goto valid; | |
2782 | } | |
2783 | ||
2784 | if (buf.st_uid != uid) { | |
2785 | goto invalid; | |
2786 | } | |
2787 | ||
2788 | valid: | |
ab38c13f | 2789 | return 1; |
cf53c06d DG |
2790 | invalid: |
2791 | return 0; | |
ab38c13f DG |
2792 | } |
2793 | ||
dcf266c0 JG |
2794 | LTTNG_HIDDEN |
2795 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2796 | int override, unsigned int autoload) |
dcf266c0 JG |
2797 | { |
2798 | int ret; | |
5f75dfa0 | 2799 | bool session_loaded = false; |
cf53c06d | 2800 | const char *path_ptr = NULL; |
dcf266c0 JG |
2801 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2802 | ||
2803 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2804 | if (ret) { | |
2805 | goto end; | |
2806 | } | |
2807 | ||
2808 | if (!path) { | |
ab38c13f DG |
2809 | char *home_path; |
2810 | const char *sys_path; | |
2811 | ||
dcf266c0 | 2812 | /* Try home path */ |
ab38c13f | 2813 | home_path = utils_get_home_dir(); |
dcf266c0 | 2814 | if (home_path) { |
ab38c13f | 2815 | char path[PATH_MAX]; |
dcf266c0 | 2816 | |
d4fcf703 DG |
2817 | /* |
2818 | * Try user session configuration path. Ignore error here so we can | |
2819 | * continue loading the system wide sessions. | |
2820 | */ | |
ab38c13f DG |
2821 | if (autoload) { |
2822 | ret = snprintf(path, sizeof(path), | |
2823 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2824 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2825 | if (ret < 0) { |
2826 | PERROR("snprintf session autoload home config path"); | |
2827 | goto end; | |
2828 | } | |
2829 | ||
2830 | /* | |
2831 | * Credentials are only validated for the autoload in order to | |
2832 | * avoid any user session daemon to try to load kernel sessions | |
2833 | * automatically and failing all the times. | |
2834 | */ | |
2835 | ret = validate_path_creds(path); | |
2836 | if (ret) { | |
2837 | path_ptr = path; | |
2838 | } | |
ab38c13f DG |
2839 | } else { |
2840 | ret = snprintf(path, sizeof(path), | |
2841 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2842 | if (ret < 0) { |
2843 | PERROR("snprintf session home config path"); | |
2844 | goto end; | |
2845 | } | |
2846 | path_ptr = path; | |
ab38c13f | 2847 | } |
cf53c06d DG |
2848 | if (path_ptr) { |
2849 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2850 | &validation_ctx, override); |
2851 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2852 | goto end; | |
2853 | } | |
2854 | /* | |
2855 | * Continue even if the session was found since we have to try | |
2856 | * the system wide sessions. | |
2857 | */ | |
5f75dfa0 | 2858 | session_loaded = true; |
ab38c13f | 2859 | } |
d4fcf703 | 2860 | } |
ab38c13f | 2861 | |
cf53c06d DG |
2862 | /* Reset path pointer for the system wide dir. */ |
2863 | path_ptr = NULL; | |
2864 | ||
d4fcf703 DG |
2865 | /* Try system wide configuration directory. */ |
2866 | if (autoload) { | |
2867 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2868 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2869 | ret = validate_path_creds(sys_path); |
2870 | if (ret) { | |
2871 | path_ptr = sys_path; | |
2872 | } | |
d4fcf703 | 2873 | } else { |
cf53c06d DG |
2874 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2875 | path_ptr = sys_path; | |
d4fcf703 DG |
2876 | } |
2877 | ||
cf53c06d DG |
2878 | if (path_ptr) { |
2879 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2880 | &validation_ctx, override); |
5f75dfa0 JG |
2881 | if (!ret) { |
2882 | session_loaded = true; | |
2883 | } | |
dcf266c0 JG |
2884 | } |
2885 | } else { | |
2886 | ret = access(path, F_OK); | |
2887 | if (ret < 0) { | |
2888 | PERROR("access"); | |
2889 | switch (errno) { | |
2890 | case ENOENT: | |
2891 | ret = -LTTNG_ERR_INVALID; | |
2892 | WARN("Session configuration path does not exist."); | |
2893 | break; | |
2894 | case EACCES: | |
2895 | ret = -LTTNG_ERR_EPERM; | |
2896 | break; | |
2897 | default: | |
2898 | ret = -LTTNG_ERR_UNK; | |
2899 | break; | |
2900 | } | |
2901 | goto end; | |
2902 | } | |
2903 | ||
2904 | ret = load_session_from_path(path, session_name, | |
2905 | &validation_ctx, override); | |
2906 | } | |
2907 | end: | |
2908 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2909 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2910 | /* | |
2911 | * Don't report an error if no sessions are found when called | |
2912 | * without a session_name or a search path. | |
2913 | */ | |
2914 | ret = 0; | |
2915 | } | |
5f75dfa0 JG |
2916 | |
2917 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2918 | /* A matching session was found in one of the search paths. */ | |
2919 | ret = 0; | |
2920 | } | |
dcf266c0 JG |
2921 | return ret; |
2922 | } | |
7bca59a4 JG |
2923 | |
2924 | static | |
2925 | void __attribute__((destructor)) session_config_exit(void) | |
2926 | { | |
2927 | xmlCleanupParser(); | |
2928 | } |