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 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
1501a7f3 | 19 | #include <assert.h> |
1501a7f3 | 20 | #include <ctype.h> |
1501a7f3 JG |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
36f2332b | 24 | #include <inttypes.h> |
dcf266c0 JG |
25 | #include <dirent.h> |
26 | #include <unistd.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/stat.h> | |
1501a7f3 JG |
29 | |
30 | #include <common/defaults.h> | |
31 | #include <common/error.h> | |
32 | #include <common/macros.h> | |
33 | #include <common/utils.h> | |
e8fa9fb0 | 34 | #include <common/compat/getenv.h> |
fb198a11 JG |
35 | #include <lttng/lttng-error.h> |
36 | #include <libxml/parser.h> | |
37 | #include <libxml/valid.h> | |
38 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
39 | #include <libxml/tree.h> |
40 | #include <lttng/lttng.h> | |
41 | #include <lttng/snapshot.h> | |
1501a7f3 | 42 | |
f40ef1d5 | 43 | #include "session-config.h" |
36f2332b | 44 | #include "config-internal.h" |
1501a7f3 JG |
45 | |
46 | struct handler_filter_args { | |
47 | const char* section; | |
48 | config_entry_handler_cb handler; | |
49 | void *user_data; | |
50 | }; | |
51 | ||
dcf266c0 JG |
52 | struct session_config_validation_ctx { |
53 | xmlSchemaParserCtxtPtr parser_ctx; | |
54 | xmlSchemaPtr schema; | |
55 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
56 | }; | |
57 | ||
1501a7f3 JG |
58 | const char * const config_str_yes = "yes"; |
59 | const char * const config_str_true = "true"; | |
60 | const char * const config_str_on = "on"; | |
61 | const char * const config_str_no = "no"; | |
62 | const char * const config_str_false = "false"; | |
63 | const char * const config_str_off = "off"; | |
36f2332b | 64 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 65 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
66 | const char * const config_xml_indent_string = "\t"; |
67 | const char * const config_xml_true = "true"; | |
68 | const char * const config_xml_false = "false"; | |
1501a7f3 | 69 | |
fb198a11 JG |
70 | const char * const config_element_channel = "channel"; |
71 | const char * const config_element_channels = "channels"; | |
72 | const char * const config_element_domain = "domain"; | |
73 | const char * const config_element_domains = "domains"; | |
74 | const char * const config_element_event = "event"; | |
75 | const char * const config_element_events = "events"; | |
76 | const char * const config_element_context = "context"; | |
77 | const char * const config_element_contexts = "contexts"; | |
78 | const char * const config_element_attributes = "attributes"; | |
79 | const char * const config_element_exclusion = "exclusion"; | |
80 | const char * const config_element_exclusions = "exclusions"; | |
81 | const char * const config_element_function_attributes = "function_attributes"; | |
82 | const char * const config_element_probe_attributes = "probe_attributes"; | |
83 | const char * const config_element_symbol_name = "symbol_name"; | |
84 | const char * const config_element_address = "address"; | |
85 | const char * const config_element_offset = "offset"; | |
86 | const char * const config_element_name = "name"; | |
87 | const char * const config_element_enabled = "enabled"; | |
88 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
89 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
90 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
91 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
92 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
93 | const char * const config_element_output = "output"; | |
94 | const char * const config_element_output_type = "output_type"; | |
95 | const char * const config_element_tracefile_size = "tracefile_size"; | |
96 | const char * const config_element_tracefile_count = "tracefile_count"; | |
97 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
98 | const char * const config_element_type = "type"; | |
99 | const char * const config_element_buffer_type = "buffer_type"; | |
100 | const char * const config_element_session = "session"; | |
101 | const char * const config_element_sessions = "sessions"; | |
102 | const char * const config_element_perf = "perf"; | |
103 | const char * const config_element_config = "config"; | |
104 | const char * const config_element_started = "started"; | |
105 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
106 | const char * const config_element_loglevel = "loglevel"; | |
107 | const char * const config_element_loglevel_type = "loglevel_type"; | |
108 | const char * const config_element_filter = "filter"; | |
109 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; | |
110 | const char * const config_element_consumer_output = "consumer_output"; | |
111 | const char * const config_element_destination = "destination"; | |
112 | const char * const config_element_path = "path"; | |
113 | const char * const config_element_net_output = "net_output"; | |
114 | const char * const config_element_control_uri = "control_uri"; | |
115 | const char * const config_element_data_uri = "data_uri"; | |
116 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
117 | const char * const config_element_pid = "pid"; |
118 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 119 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
120 | const char * const config_element_pid_tracker = "pid_tracker"; |
121 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
122 | const char * const config_element_targets = "targets"; |
123 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
124 | |
125 | const char * const config_domain_type_kernel = "KERNEL"; | |
126 | const char * const config_domain_type_ust = "UST"; | |
127 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 128 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 129 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
130 | |
131 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
132 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
133 | const char * const config_buffer_type_global = "GLOBAL"; | |
134 | ||
135 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
136 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
137 | ||
138 | const char * const config_output_type_splice = "SPLICE"; | |
139 | const char * const config_output_type_mmap = "MMAP"; | |
140 | ||
141 | const char * const config_loglevel_type_all = "ALL"; | |
142 | const char * const config_loglevel_type_range = "RANGE"; | |
143 | const char * const config_loglevel_type_single = "SINGLE"; | |
144 | ||
145 | const char * const config_event_type_all = "ALL"; | |
146 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
147 | const char * const config_event_type_probe = "PROBE"; | |
148 | const char * const config_event_type_function = "FUNCTION"; | |
149 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
150 | const char * const config_event_type_noop = "NOOP"; | |
151 | const char * const config_event_type_syscall = "SYSCALL"; | |
152 | const char * const config_event_type_kprobe = "KPROBE"; | |
153 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
154 | ||
155 | const char * const config_event_context_pid = "PID"; | |
156 | const char * const config_event_context_procname = "PROCNAME"; | |
157 | const char * const config_event_context_prio = "PRIO"; | |
158 | const char * const config_event_context_nice = "NICE"; | |
159 | const char * const config_event_context_vpid = "VPID"; | |
160 | const char * const config_event_context_tid = "TID"; | |
161 | const char * const config_event_context_vtid = "VTID"; | |
162 | const char * const config_event_context_ppid = "PPID"; | |
163 | const char * const config_event_context_vppid = "VPPID"; | |
164 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
165 | const char * const config_event_context_hostname = "HOSTNAME"; | |
166 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 167 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
fb198a11 | 168 | |
dcf266c0 JG |
169 | struct consumer_output { |
170 | int enabled; | |
171 | char *path; | |
172 | char *control_uri; | |
173 | char *data_uri; | |
174 | }; | |
175 | ||
1501a7f3 JG |
176 | static int config_entry_handler_filter(struct handler_filter_args *args, |
177 | const char *section, const char *name, const char *value) | |
178 | { | |
179 | int ret = 0; | |
180 | struct config_entry entry = { section, name, value }; | |
181 | ||
182 | assert(args); | |
183 | ||
184 | if (!section || !name || !value) { | |
185 | ret = -EIO; | |
186 | goto end; | |
187 | } | |
188 | ||
189 | if (args->section) { | |
190 | if (strcmp(args->section, section)) { | |
191 | goto end; | |
192 | } | |
193 | } | |
194 | ||
195 | ret = args->handler(&entry, args->user_data); | |
196 | end: | |
197 | return ret; | |
198 | } | |
199 | ||
200 | LTTNG_HIDDEN | |
201 | int config_get_section_entries(const char *override_path, const char *section, | |
202 | config_entry_handler_cb handler, void *user_data) | |
203 | { | |
204 | int ret = 0; | |
7ab02a27 | 205 | char *path; |
1501a7f3 JG |
206 | FILE *config_file = NULL; |
207 | struct handler_filter_args filter = { section, handler, user_data }; | |
208 | ||
7ab02a27 DG |
209 | /* First, try system-wide conf. file. */ |
210 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
211 | ||
212 | config_file = fopen(path, "r"); | |
213 | if (config_file) { | |
214 | DBG("Loading daemon conf file at %s", path); | |
215 | /* | |
216 | * Return value is not very important here since error or not, we | |
217 | * continue and try the next possible conf. file. | |
218 | */ | |
219 | (void) ini_parse_file(config_file, | |
220 | (ini_entry_handler) config_entry_handler_filter, | |
221 | (void *) &filter); | |
222 | fclose(config_file); | |
223 | } | |
224 | ||
225 | /* Second is the user local configuration. */ | |
226 | path = utils_get_home_dir(); | |
227 | if (path) { | |
228 | char fullpath[PATH_MAX]; | |
229 | ||
230 | ret = snprintf(fullpath, sizeof(fullpath), | |
231 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
232 | if (ret < 0) { | |
233 | PERROR("snprintf user conf. path"); | |
234 | goto error; | |
235 | } | |
236 | ||
237 | config_file = fopen(fullpath, "r"); | |
238 | if (config_file) { | |
239 | DBG("Loading daemon user conf file at %s", path); | |
240 | /* | |
241 | * Return value is not very important here since error or not, we | |
242 | * continue and try the next possible conf. file. | |
243 | */ | |
244 | (void) ini_parse_file(config_file, | |
245 | (ini_entry_handler) config_entry_handler_filter, | |
246 | (void *) &filter); | |
247 | fclose(config_file); | |
248 | } | |
249 | } | |
250 | ||
251 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
252 | if (override_path) { |
253 | config_file = fopen(override_path, "r"); | |
254 | if (config_file) { | |
7ab02a27 DG |
255 | DBG("Loading daemon command line conf file at %s", override_path); |
256 | (void) ini_parse_file(config_file, | |
257 | (ini_entry_handler) config_entry_handler_filter, | |
258 | (void *) &filter); | |
259 | fclose(config_file); | |
1501a7f3 JG |
260 | } else { |
261 | ERR("Failed to open daemon configuration file at %s", | |
262 | override_path); | |
263 | ret = -ENOENT; | |
7ab02a27 | 264 | goto error; |
1501a7f3 JG |
265 | } |
266 | } | |
267 | ||
7ab02a27 DG |
268 | /* Everything went well. */ |
269 | ret = 0; | |
1501a7f3 | 270 | |
7ab02a27 | 271 | error: |
1501a7f3 JG |
272 | return ret; |
273 | } | |
274 | ||
275 | LTTNG_HIDDEN | |
276 | int config_parse_value(const char *value) | |
277 | { | |
278 | int i, ret = 0; | |
279 | char *endptr, *lower_str; | |
280 | size_t len; | |
281 | unsigned long v; | |
282 | ||
283 | len = strlen(value); | |
284 | if (!len) { | |
285 | ret = -1; | |
286 | goto end; | |
287 | } | |
288 | ||
289 | v = strtoul(value, &endptr, 10); | |
290 | if (endptr != value) { | |
291 | ret = v; | |
292 | goto end; | |
293 | } | |
294 | ||
295 | lower_str = zmalloc(len + 1); | |
296 | if (!lower_str) { | |
297 | PERROR("zmalloc"); | |
298 | ret = -errno; | |
299 | goto end; | |
300 | } | |
301 | ||
302 | for (i = 0; i < len; i++) { | |
303 | lower_str[i] = tolower(value[i]); | |
304 | } | |
305 | ||
306 | if (!strcmp(lower_str, config_str_yes) || | |
307 | !strcmp(lower_str, config_str_true) || | |
308 | !strcmp(lower_str, config_str_on)) { | |
309 | ret = 1; | |
310 | } else if (!strcmp(lower_str, config_str_no) || | |
311 | !strcmp(lower_str, config_str_false) || | |
312 | !strcmp(lower_str, config_str_off)) { | |
313 | ret = 0; | |
314 | } else { | |
315 | ret = -1; | |
316 | } | |
317 | ||
318 | free(lower_str); | |
319 | end: | |
320 | return ret; | |
321 | } | |
36f2332b JG |
322 | |
323 | /* | |
324 | * Returns a xmlChar string which must be released using xmlFree(). | |
325 | */ | |
326 | static xmlChar *encode_string(const char *in_str) | |
327 | { | |
328 | xmlChar *out_str = NULL; | |
329 | xmlCharEncodingHandlerPtr handler; | |
330 | int out_len, ret, in_len; | |
331 | ||
332 | assert(in_str); | |
333 | ||
334 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
335 | if (!handler) { | |
336 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
337 | goto end; | |
338 | } | |
339 | ||
340 | in_len = strlen(in_str); | |
341 | /* | |
f76d886f JG |
342 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
343 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 344 | */ |
f76d886f | 345 | out_len = (in_len * 4) + 1; |
36f2332b JG |
346 | out_str = xmlMalloc(out_len); |
347 | if (!out_str) { | |
348 | goto end; | |
349 | } | |
350 | ||
351 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
352 | if (ret < 0) { | |
353 | xmlFree(out_str); | |
354 | out_str = NULL; | |
355 | goto end; | |
356 | } | |
357 | ||
358 | /* out_len is now the size of out_str */ | |
359 | out_str[out_len] = '\0'; | |
360 | end: | |
361 | return out_str; | |
362 | } | |
363 | ||
364 | LTTNG_HIDDEN | |
705bb62f | 365 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
366 | { |
367 | int ret; | |
368 | struct config_writer *writer; | |
369 | xmlOutputBufferPtr buffer; | |
370 | ||
371 | writer = zmalloc(sizeof(struct config_writer)); | |
372 | if (!writer) { | |
373 | PERROR("zmalloc config_writer_create"); | |
374 | goto end; | |
375 | } | |
376 | ||
377 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
378 | if (!buffer) { | |
379 | goto error_destroy; | |
380 | } | |
381 | ||
382 | writer->writer = xmlNewTextWriter(buffer); | |
383 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
384 | config_xml_encoding, NULL); | |
385 | if (ret < 0) { | |
386 | goto error_destroy; | |
387 | } | |
388 | ||
389 | ret = xmlTextWriterSetIndentString(writer->writer, | |
390 | BAD_CAST config_xml_indent_string); | |
705bb62f | 391 | if (ret) { |
36f2332b JG |
392 | goto error_destroy; |
393 | } | |
394 | ||
705bb62f JRJ |
395 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
396 | if (ret) { | |
36f2332b JG |
397 | goto error_destroy; |
398 | } | |
399 | ||
400 | end: | |
401 | return writer; | |
402 | error_destroy: | |
403 | config_writer_destroy(writer); | |
404 | return NULL; | |
405 | } | |
406 | ||
407 | LTTNG_HIDDEN | |
408 | int config_writer_destroy(struct config_writer *writer) | |
409 | { | |
410 | int ret = 0; | |
411 | ||
412 | if (!writer) { | |
413 | ret = -EINVAL; | |
414 | goto end; | |
415 | } | |
416 | ||
417 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
418 | WARN("Could not close XML document"); | |
419 | ret = -EIO; | |
420 | } | |
421 | ||
422 | if (writer->writer) { | |
423 | xmlFreeTextWriter(writer->writer); | |
424 | } | |
425 | ||
426 | free(writer); | |
427 | end: | |
428 | return ret; | |
429 | } | |
430 | ||
431 | LTTNG_HIDDEN | |
432 | int config_writer_open_element(struct config_writer *writer, | |
433 | const char *element_name) | |
434 | { | |
435 | int ret; | |
436 | xmlChar *encoded_element_name; | |
437 | ||
438 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
439 | ret = -1; | |
440 | goto end; | |
441 | } | |
442 | ||
443 | encoded_element_name = encode_string(element_name); | |
444 | if (!encoded_element_name) { | |
445 | ret = -1; | |
446 | goto end; | |
447 | } | |
448 | ||
449 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
450 | xmlFree(encoded_element_name); | |
451 | end: | |
452 | return ret > 0 ? 0 : ret; | |
453 | } | |
454 | ||
455 | LTTNG_HIDDEN | |
456 | int config_writer_close_element(struct config_writer *writer) | |
457 | { | |
458 | int ret; | |
459 | ||
460 | if (!writer || !writer->writer) { | |
461 | ret = -1; | |
462 | goto end; | |
463 | } | |
464 | ||
465 | ret = xmlTextWriterEndElement(writer->writer); | |
466 | end: | |
467 | return ret > 0 ? 0 : ret; | |
468 | } | |
469 | ||
470 | LTTNG_HIDDEN | |
471 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
472 | const char *element_name, uint64_t value) | |
473 | { | |
474 | int ret; | |
475 | xmlChar *encoded_element_name; | |
476 | ||
477 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
478 | ret = -1; | |
479 | goto end; | |
480 | } | |
481 | ||
482 | encoded_element_name = encode_string(element_name); | |
483 | if (!encoded_element_name) { | |
484 | ret = -1; | |
485 | goto end; | |
486 | } | |
487 | ||
488 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
489 | encoded_element_name, "%" PRIu64, value); | |
490 | xmlFree(encoded_element_name); | |
491 | end: | |
492 | return ret > 0 ? 0 : ret; | |
493 | } | |
494 | ||
495 | LTTNG_HIDDEN | |
496 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
497 | const char *element_name, int64_t value) | |
498 | { | |
499 | int ret; | |
500 | xmlChar *encoded_element_name; | |
501 | ||
502 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
503 | ret = -1; | |
504 | goto end; | |
505 | } | |
506 | ||
507 | encoded_element_name = encode_string(element_name); | |
508 | if (!encoded_element_name) { | |
509 | ret = -1; | |
510 | goto end; | |
511 | } | |
512 | ||
513 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
514 | encoded_element_name, "%" PRIi64, value); | |
515 | xmlFree(encoded_element_name); | |
516 | end: | |
517 | return ret > 0 ? 0 : ret; | |
518 | } | |
519 | ||
520 | LTTNG_HIDDEN | |
521 | int config_writer_write_element_bool(struct config_writer *writer, | |
522 | const char *element_name, int value) | |
523 | { | |
524 | return config_writer_write_element_string(writer, element_name, | |
525 | value ? config_xml_true : config_xml_false); | |
526 | } | |
527 | ||
528 | LTTNG_HIDDEN | |
529 | int config_writer_write_element_string(struct config_writer *writer, | |
530 | const char *element_name, const char *value) | |
531 | { | |
532 | int ret; | |
533 | xmlChar *encoded_element_name = NULL; | |
534 | xmlChar *encoded_value = NULL; | |
535 | ||
536 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
537 | !value) { | |
538 | ret = -1; | |
539 | goto end; | |
540 | } | |
541 | ||
542 | encoded_element_name = encode_string(element_name); | |
543 | if (!encoded_element_name) { | |
544 | ret = -1; | |
545 | goto end; | |
546 | } | |
547 | ||
548 | encoded_value = encode_string(value); | |
549 | if (!encoded_value) { | |
550 | ret = -1; | |
551 | goto end; | |
552 | } | |
553 | ||
554 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 555 | encoded_value); |
36f2332b JG |
556 | end: |
557 | xmlFree(encoded_element_name); | |
558 | xmlFree(encoded_value); | |
559 | return ret > 0 ? 0 : ret; | |
560 | } | |
dcf266c0 JG |
561 | |
562 | static | |
563 | void xml_error_handler(void *ctx, const char *format, ...) | |
564 | { | |
565 | char *errMsg; | |
566 | va_list args; | |
567 | int ret; | |
568 | ||
569 | va_start(args, format); | |
570 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 571 | va_end(args); |
dcf266c0 JG |
572 | if (ret == -1) { |
573 | ERR("String allocation failed in xml error handler"); | |
574 | return; | |
575 | } | |
dcf266c0 JG |
576 | |
577 | fprintf(stderr, "XML Error: %s", errMsg); | |
578 | free(errMsg); | |
579 | } | |
580 | ||
581 | static | |
582 | void fini_session_config_validation_ctx( | |
583 | struct session_config_validation_ctx *ctx) | |
584 | { | |
585 | if (ctx->parser_ctx) { | |
586 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
587 | } | |
588 | ||
589 | if (ctx->schema) { | |
590 | xmlSchemaFree(ctx->schema); | |
591 | } | |
592 | ||
593 | if (ctx->schema_validation_ctx) { | |
594 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
595 | } | |
596 | ||
597 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
598 | } | |
599 | ||
54e399cb JG |
600 | static |
601 | char *get_session_config_xsd_path() | |
602 | { | |
603 | char *xsd_path; | |
e8fa9fb0 | 604 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
605 | size_t base_path_len; |
606 | size_t max_path_len; | |
607 | ||
608 | if (!base_path) { | |
609 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
610 | } | |
611 | ||
612 | base_path_len = strlen(base_path); | |
613 | max_path_len = base_path_len + | |
614 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
615 | xsd_path = zmalloc(max_path_len); | |
616 | if (!xsd_path) { | |
617 | goto end; | |
618 | } | |
619 | ||
620 | strncpy(xsd_path, base_path, max_path_len); | |
621 | if (xsd_path[base_path_len - 1] != '/') { | |
622 | xsd_path[base_path_len++] = '/'; | |
623 | } | |
624 | ||
625 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
626 | max_path_len - base_path_len); | |
627 | end: | |
628 | return xsd_path; | |
629 | } | |
630 | ||
dcf266c0 JG |
631 | static |
632 | int init_session_config_validation_ctx( | |
633 | struct session_config_validation_ctx *ctx) | |
634 | { | |
635 | int ret; | |
54e399cb JG |
636 | char *xsd_path = get_session_config_xsd_path(); |
637 | ||
638 | if (!xsd_path) { | |
639 | ret = -LTTNG_ERR_NOMEM; | |
640 | goto end; | |
641 | } | |
dcf266c0 | 642 | |
54e399cb | 643 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
644 | if (!ctx->parser_ctx) { |
645 | ERR("XSD parser context creation failed"); | |
646 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
647 | goto end; | |
648 | } | |
649 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
650 | xml_error_handler, NULL); | |
651 | ||
652 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
653 | if (!ctx->schema) { | |
654 | ERR("XSD parsing failed"); | |
655 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
656 | goto end; | |
657 | } | |
658 | ||
659 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
660 | if (!ctx->schema_validation_ctx) { | |
661 | ERR("XSD validation context creation failed"); | |
662 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
663 | goto end; | |
664 | } | |
665 | ||
666 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
667 | xml_error_handler, NULL); | |
668 | ret = 0; | |
669 | ||
670 | end: | |
671 | if (ret) { | |
672 | fini_session_config_validation_ctx(ctx); | |
673 | } | |
674 | ||
54e399cb | 675 | free(xsd_path); |
dcf266c0 JG |
676 | return ret; |
677 | } | |
678 | ||
679 | static | |
680 | int parse_uint(xmlChar *str, uint64_t *val) | |
681 | { | |
682 | int ret; | |
683 | char *endptr; | |
684 | ||
685 | if (!str || !val) { | |
686 | ret = -1; | |
687 | goto end; | |
688 | } | |
689 | ||
690 | *val = strtoull((const char *) str, &endptr, 10); | |
691 | if (!endptr || *endptr) { | |
692 | ret = -1; | |
693 | } else { | |
694 | ret = 0; | |
695 | } | |
696 | ||
697 | end: | |
698 | return ret; | |
699 | } | |
700 | ||
701 | static | |
702 | int parse_int(xmlChar *str, int64_t *val) | |
703 | { | |
704 | int ret; | |
705 | char *endptr; | |
706 | ||
707 | if (!str || !val) { | |
708 | ret = -1; | |
709 | goto end; | |
710 | } | |
711 | ||
712 | *val = strtoll((const char *) str, &endptr, 10); | |
713 | if (!endptr || *endptr) { | |
714 | ret = -1; | |
715 | } else { | |
716 | ret = 0; | |
717 | } | |
718 | ||
719 | end: | |
720 | return ret; | |
721 | } | |
722 | ||
723 | static | |
724 | int parse_bool(xmlChar *str, int *val) | |
725 | { | |
726 | int ret = 0; | |
727 | ||
728 | if (!str || !val) { | |
729 | ret = -1; | |
730 | goto end; | |
731 | } | |
732 | ||
733 | if (!strcmp((const char *) str, config_xml_true)) { | |
734 | *val = 1; | |
735 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
736 | *val = 0; | |
737 | } else { | |
738 | WARN("Invalid boolean value encoutered (%s).", | |
739 | (const char *) str); | |
740 | ret = -1; | |
741 | } | |
742 | end: | |
743 | return ret; | |
744 | } | |
745 | ||
746 | static | |
747 | int get_domain_type(xmlChar *domain) | |
748 | { | |
749 | int ret; | |
750 | ||
751 | if (!domain) { | |
752 | goto error; | |
753 | } | |
754 | ||
755 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
756 | ret = LTTNG_DOMAIN_KERNEL; | |
757 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
758 | ret = LTTNG_DOMAIN_UST; | |
759 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
760 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
761 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
762 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
763 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
764 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
765 | } else { |
766 | goto error; | |
767 | } | |
768 | ||
769 | return ret; | |
770 | error: | |
771 | return -1; | |
772 | } | |
773 | ||
774 | static | |
775 | int get_buffer_type(xmlChar *buffer_type) | |
776 | { | |
777 | int ret; | |
778 | ||
779 | if (!buffer_type) { | |
780 | goto error; | |
781 | } | |
782 | ||
783 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
784 | ret = LTTNG_BUFFER_GLOBAL; | |
785 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
786 | ret = LTTNG_BUFFER_PER_UID; | |
787 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
788 | ret = LTTNG_BUFFER_PER_PID; | |
789 | } else { | |
790 | goto error; | |
791 | } | |
792 | ||
793 | return ret; | |
794 | error: | |
795 | return -1; | |
796 | } | |
797 | ||
798 | static | |
799 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
800 | { | |
801 | int ret; | |
802 | ||
803 | if (!overwrite_mode) { | |
804 | goto error; | |
805 | } | |
806 | ||
807 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
808 | ret = 1; | |
809 | } else if (!strcmp((char *) overwrite_mode, | |
810 | config_overwrite_mode_discard)) { | |
811 | ret = 0; | |
812 | } else { | |
813 | goto error; | |
814 | } | |
815 | ||
816 | return ret; | |
817 | error: | |
818 | return -1; | |
819 | } | |
820 | ||
821 | static | |
822 | int get_output_type(xmlChar *output_type) | |
823 | { | |
824 | int ret; | |
825 | ||
826 | if (!output_type) { | |
827 | goto error; | |
828 | } | |
829 | ||
830 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
831 | ret = LTTNG_EVENT_MMAP; | |
832 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
833 | ret = LTTNG_EVENT_SPLICE; | |
834 | } else { | |
835 | goto error; | |
836 | } | |
837 | ||
838 | return ret; | |
839 | error: | |
840 | return -1; | |
841 | } | |
842 | ||
843 | static | |
844 | int get_event_type(xmlChar *event_type) | |
845 | { | |
846 | int ret; | |
847 | ||
848 | if (!event_type) { | |
849 | goto error; | |
850 | } | |
851 | ||
852 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
853 | ret = LTTNG_EVENT_ALL; | |
854 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
855 | ret = LTTNG_EVENT_TRACEPOINT; | |
856 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
857 | ret = LTTNG_EVENT_PROBE; | |
858 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
859 | ret = LTTNG_EVENT_FUNCTION; | |
860 | } else if (!strcmp((char *) event_type, | |
861 | config_event_type_function_entry)) { | |
862 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
863 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
864 | ret = LTTNG_EVENT_NOOP; | |
865 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
866 | ret = LTTNG_EVENT_SYSCALL; | |
867 | } else { | |
868 | goto error; | |
869 | } | |
870 | ||
871 | return ret; | |
872 | error: | |
873 | return -1; | |
874 | } | |
875 | ||
876 | static | |
877 | int get_loglevel_type(xmlChar *loglevel_type) | |
878 | { | |
879 | int ret; | |
880 | ||
881 | if (!loglevel_type) { | |
882 | goto error; | |
883 | } | |
884 | ||
885 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
886 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
887 | } else if (!strcmp((char *) loglevel_type, | |
888 | config_loglevel_type_range)) { | |
889 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
890 | } else if (!strcmp((char *) loglevel_type, | |
891 | config_loglevel_type_single)) { | |
892 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
893 | } else { | |
894 | goto error; | |
895 | } | |
896 | ||
897 | return ret; | |
898 | error: | |
899 | return -1; | |
900 | } | |
901 | ||
902 | /* | |
903 | * Return the context type or -1 on error. | |
904 | */ | |
905 | static | |
906 | int get_context_type(xmlChar *context_type) | |
907 | { | |
908 | int ret; | |
909 | ||
910 | if (!context_type) { | |
911 | goto error; | |
912 | } | |
913 | ||
914 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
915 | ret = LTTNG_EVENT_CONTEXT_PID; | |
916 | } else if (!strcmp((char *) context_type, | |
917 | config_event_context_procname)) { | |
918 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
919 | } else if (!strcmp((char *) context_type, | |
920 | config_event_context_prio)) { | |
921 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
922 | } else if (!strcmp((char *) context_type, | |
923 | config_event_context_nice)) { | |
924 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
925 | } else if (!strcmp((char *) context_type, | |
926 | config_event_context_vpid)) { | |
927 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
928 | } else if (!strcmp((char *) context_type, | |
929 | config_event_context_tid)) { | |
930 | ret = LTTNG_EVENT_CONTEXT_TID; | |
931 | } else if (!strcmp((char *) context_type, | |
932 | config_event_context_vtid)) { | |
933 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
934 | } else if (!strcmp((char *) context_type, | |
935 | config_event_context_ppid)) { | |
936 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
937 | } else if (!strcmp((char *) context_type, | |
938 | config_event_context_vppid)) { | |
939 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
940 | } else if (!strcmp((char *) context_type, | |
941 | config_event_context_pthread_id)) { | |
942 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
943 | } else if (!strcmp((char *) context_type, | |
944 | config_event_context_hostname)) { | |
945 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
946 | } else if (!strcmp((char *) context_type, | |
947 | config_event_context_ip)) { | |
948 | ret = LTTNG_EVENT_CONTEXT_IP; | |
949 | } else { | |
950 | goto error; | |
951 | } | |
952 | ||
953 | return ret; | |
954 | error: | |
955 | return -1; | |
956 | } | |
957 | ||
958 | static | |
959 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
960 | { | |
961 | int ret; | |
962 | xmlNodePtr node; | |
963 | ||
964 | for (node = xmlFirstElementChild(domain_node); node; | |
965 | node = xmlNextElementSibling(node)) { | |
966 | if (!strcmp((const char *) node->name, config_element_type)) { | |
967 | /* domain type */ | |
968 | xmlChar *node_content = xmlNodeGetContent(node); | |
969 | if (!node_content) { | |
970 | ret = -LTTNG_ERR_NOMEM; | |
971 | goto end; | |
972 | } | |
973 | ||
974 | ret = get_domain_type(node_content); | |
975 | free(node_content); | |
976 | if (ret < 0) { | |
977 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
978 | goto end; | |
979 | } | |
980 | ||
981 | domain->type = ret; | |
982 | } else if (!strcmp((const char *) node->name, | |
983 | config_element_buffer_type)) { | |
984 | /* buffer type */ | |
985 | xmlChar *node_content = xmlNodeGetContent(node); | |
986 | if (!node_content) { | |
987 | ret = -LTTNG_ERR_NOMEM; | |
988 | goto end; | |
989 | } | |
990 | ||
991 | ret = get_buffer_type(node_content); | |
992 | free(node_content); | |
993 | if (ret < 0) { | |
994 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
995 | goto end; | |
996 | } | |
997 | ||
998 | domain->buf_type = ret; | |
999 | } | |
1000 | } | |
1001 | ret = 0; | |
1002 | end: | |
1003 | return ret; | |
1004 | } | |
1005 | ||
1006 | static | |
1007 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1008 | char **data_uri) | |
1009 | { | |
1010 | xmlNodePtr node; | |
1011 | ||
1012 | for (node = xmlFirstElementChild(net_output_node); node; | |
1013 | node = xmlNextElementSibling(node)) { | |
1014 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1015 | /* control_uri */ | |
1016 | *control_uri = (char *) xmlNodeGetContent(node); | |
1017 | if (!*control_uri) { | |
1018 | break; | |
1019 | } | |
1020 | } else { | |
1021 | /* data_uri */ | |
1022 | *data_uri = (char *) xmlNodeGetContent(node); | |
1023 | if (!*data_uri) { | |
1024 | break; | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1030 | } | |
1031 | ||
1032 | static | |
1033 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1034 | struct consumer_output *output) | |
1035 | { | |
1036 | int ret; | |
1037 | xmlNodePtr node; | |
1038 | ||
1039 | assert(output); | |
1040 | ||
1041 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1042 | node = xmlNextElementSibling(node)) { | |
1043 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1044 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1045 | ||
1046 | /* enabled */ | |
1047 | if (!enabled_str) { | |
1048 | ret = -LTTNG_ERR_NOMEM; | |
1049 | goto end; | |
1050 | } | |
1051 | ||
1052 | ret = parse_bool(enabled_str, &output->enabled); | |
1053 | free(enabled_str); | |
1054 | if (ret) { | |
1055 | goto end; | |
1056 | } | |
1057 | } else { | |
1058 | xmlNodePtr output_type_node; | |
1059 | ||
1060 | /* destination */ | |
1061 | output_type_node = xmlFirstElementChild(node); | |
1062 | if (!output_type_node) { | |
1063 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1064 | goto end; | |
1065 | } | |
1066 | ||
1067 | if (!strcmp((const char *) output_type_node->name, | |
1068 | config_element_path)) { | |
1069 | /* path */ | |
1070 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1071 | if (!output->path) { | |
1072 | ret = -LTTNG_ERR_NOMEM; | |
1073 | goto end; | |
1074 | } | |
1075 | } else { | |
1076 | /* net_output */ | |
1077 | ret = get_net_output_uris(output_type_node, | |
1078 | &output->control_uri, &output->data_uri); | |
1079 | if (ret) { | |
1080 | goto end; | |
1081 | } | |
1082 | } | |
1083 | } | |
1084 | } | |
1085 | ret = 0; | |
1086 | ||
1087 | end: | |
1088 | if (ret) { | |
1089 | free(output->path); | |
1090 | free(output->control_uri); | |
1091 | free(output->data_uri); | |
1092 | memset(output, 0, sizeof(struct consumer_output)); | |
1093 | } | |
1094 | return ret; | |
1095 | } | |
1096 | ||
1097 | static | |
1098 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1099 | const char *control_uri, const char *data_uri) | |
1100 | { | |
1101 | int ret; | |
1102 | struct lttng_handle *handle; | |
1103 | const char *uri = NULL; | |
1104 | ||
1105 | assert(name); | |
1106 | assert(domain); | |
1107 | ||
1108 | handle = lttng_create_handle(name, domain); | |
1109 | if (!handle) { | |
1110 | ret = -LTTNG_ERR_NOMEM; | |
1111 | goto end; | |
1112 | } | |
1113 | ||
1114 | if (!control_uri || !data_uri) { | |
1115 | uri = control_uri ? control_uri : data_uri; | |
1116 | control_uri = uri; | |
1117 | data_uri = uri; | |
1118 | } | |
1119 | ||
1120 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1121 | lttng_destroy_handle(handle); | |
1122 | end: | |
1123 | return ret; | |
1124 | } | |
1125 | ||
1126 | static | |
1127 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1128 | { | |
1129 | int ret; | |
1130 | xmlNodePtr node = NULL; | |
1131 | xmlNodePtr snapshot_output_list_node; | |
1132 | xmlNodePtr snapshot_output_node; | |
1133 | ||
1134 | assert(session_name); | |
1135 | ||
1136 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1137 | if (ret) { | |
1138 | goto end; | |
1139 | } | |
1140 | ||
1141 | if (!output_node) { | |
1142 | goto end; | |
1143 | } | |
1144 | ||
1145 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1146 | ||
1147 | /* Parse and create snapshot outputs */ | |
1148 | ||
1149 | for (snapshot_output_node = | |
1150 | xmlFirstElementChild(snapshot_output_list_node); | |
1151 | snapshot_output_node; snapshot_output_node = | |
1152 | xmlNextElementSibling(snapshot_output_node)) { | |
1153 | char *name = NULL; | |
1154 | uint64_t max_size = UINT64_MAX; | |
1155 | struct consumer_output output = { 0 }; | |
1156 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1157 | ||
1158 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1159 | node = xmlNextElementSibling(node)) { | |
1160 | if (!strcmp((const char *) node->name, | |
1161 | config_element_name)) { | |
1162 | /* name */ | |
1163 | name = (char *) xmlNodeGetContent(node); | |
1164 | if (!name) { | |
1165 | ret = -LTTNG_ERR_NOMEM; | |
1166 | goto error_snapshot_output; | |
1167 | } | |
1168 | } else if (!strcmp((const char *) node->name, | |
1169 | config_element_max_size)) { | |
1170 | xmlChar *content = xmlNodeGetContent(node); | |
1171 | ||
1172 | /* max_size */ | |
1173 | if (!content) { | |
1174 | ret = -LTTNG_ERR_NOMEM; | |
1175 | goto error_snapshot_output; | |
1176 | } | |
1177 | ret = parse_uint(content, &max_size); | |
1178 | free(content); | |
1179 | if (ret) { | |
1180 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1181 | goto error_snapshot_output; | |
1182 | } | |
1183 | } else { | |
1184 | /* consumer_output */ | |
1185 | ret = process_consumer_output(node, &output); | |
1186 | if (ret) { | |
1187 | goto error_snapshot_output; | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | snapshot_output = lttng_snapshot_output_create(); | |
1193 | if (!snapshot_output) { | |
1194 | ret = -LTTNG_ERR_NOMEM; | |
1195 | goto error_snapshot_output; | |
1196 | } | |
1197 | ||
1198 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1199 | if (ret) { | |
1200 | goto error_snapshot_output; | |
1201 | } | |
1202 | ||
1203 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1204 | if (ret) { | |
1205 | goto error_snapshot_output; | |
1206 | } | |
1207 | ||
1208 | if (output.path) { | |
1209 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1210 | snapshot_output); | |
1211 | if (ret) { | |
1212 | goto error_snapshot_output; | |
1213 | } | |
1214 | } else { | |
1215 | if (output.control_uri) { | |
1216 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1217 | snapshot_output); | |
1218 | if (ret) { | |
1219 | goto error_snapshot_output; | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | if (output.data_uri) { | |
1224 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1225 | snapshot_output); | |
1226 | if (ret) { | |
1227 | goto error_snapshot_output; | |
1228 | } | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1233 | error_snapshot_output: | |
1234 | free(name); | |
1235 | free(output.path); | |
1236 | free(output.control_uri); | |
1237 | free(output.data_uri); | |
1238 | lttng_snapshot_output_destroy(snapshot_output); | |
1239 | if (ret) { | |
1240 | goto end; | |
1241 | } | |
1242 | } | |
1243 | end: | |
1244 | return ret; | |
1245 | } | |
1246 | ||
1247 | static | |
1248 | int create_session(const char *name, | |
1249 | struct lttng_domain *kernel_domain, | |
1250 | struct lttng_domain *ust_domain, | |
1251 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1252 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1253 | xmlNodePtr output_node, |
1254 | uint64_t live_timer_interval) | |
1255 | { | |
1256 | int ret; | |
1257 | struct consumer_output output = { 0 }; | |
1258 | xmlNodePtr consumer_output_node; | |
1259 | ||
1260 | assert(name); | |
dcf266c0 JG |
1261 | |
1262 | if (output_node) { | |
1263 | consumer_output_node = xmlFirstElementChild(output_node); | |
1264 | if (!consumer_output_node) { | |
1265 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1266 | goto end; | |
1267 | } | |
1268 | ||
1269 | if (strcmp((const char *) consumer_output_node->name, | |
1270 | config_element_consumer_output)) { | |
1271 | WARN("Invalid output type, expected %s node", | |
1272 | config_element_consumer_output); | |
1273 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1274 | goto end; | |
1275 | } | |
1276 | ||
1277 | ret = process_consumer_output(consumer_output_node, &output); | |
1278 | if (ret) { | |
1279 | goto end; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | if (live_timer_interval != UINT64_MAX && | |
1284 | !output.control_uri && !output.data_uri) { | |
1285 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1286 | goto end; | |
1287 | } | |
1288 | ||
1289 | if (output.control_uri || output.data_uri) { | |
1290 | int i; | |
1291 | struct lttng_domain *domain; | |
1292 | struct lttng_domain *domains[] = | |
c8c5f7ce | 1293 | { kernel_domain, ust_domain, jul_domain, log4j_domain }; |
dcf266c0 JG |
1294 | |
1295 | /* network destination */ | |
1296 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1297 | /* |
1298 | * URLs are provided for sure since the test above make sure that | |
1299 | * with a live timer the data and control URIs are provided. So, | |
1300 | * NULL is passed here and will be set right after. | |
1301 | */ | |
1302 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1303 | } else { |
1304 | ret = lttng_create_session(name, NULL); | |
1305 | } | |
1306 | if (ret) { | |
1307 | goto end; | |
1308 | } | |
1309 | ||
301423df | 1310 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1311 | domain = domains[i]; |
1312 | if (!domain) { | |
1313 | continue; | |
1314 | } | |
1315 | ||
1316 | ret = create_session_net_output(name, domain, output.control_uri, | |
1317 | output.data_uri); | |
1318 | if (ret) { | |
1319 | goto end; | |
1320 | } | |
1321 | } | |
1322 | } else { | |
1323 | /* either local output or no output */ | |
1324 | ret = lttng_create_session(name, output.path); | |
1325 | if (ret) { | |
1326 | goto end; | |
1327 | } | |
1328 | } | |
1329 | end: | |
1330 | free(output.path); | |
1331 | free(output.control_uri); | |
1332 | free(output.data_uri); | |
1333 | return ret; | |
1334 | } | |
1335 | static | |
1336 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1337 | struct lttng_event_probe_attr *attr) | |
1338 | { | |
1339 | int ret; | |
1340 | ||
1341 | assert(probe_attribute_node); | |
1342 | assert(attr); | |
1343 | ||
1344 | if (!strcmp((const char *) probe_attribute_node->name, | |
1345 | config_element_address)) { | |
1346 | xmlChar *content; | |
1347 | uint64_t addr = 0; | |
1348 | ||
1349 | /* addr */ | |
1350 | content = xmlNodeGetContent(probe_attribute_node); | |
1351 | if (!content) { | |
1352 | ret = -LTTNG_ERR_NOMEM; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | ret = parse_uint(content, &addr); | |
1357 | free(content); | |
1358 | if (ret) { | |
1359 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1360 | goto end; | |
1361 | } | |
1362 | ||
1363 | attr->addr = addr; | |
1364 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1365 | config_element_offset)) { | |
1366 | xmlChar *content; | |
1367 | uint64_t offset = 0; | |
1368 | ||
1369 | /* offset */ | |
1370 | content = xmlNodeGetContent(probe_attribute_node); | |
1371 | if (!content) { | |
1372 | ret = -LTTNG_ERR_NOMEM; | |
1373 | goto end; | |
1374 | } | |
1375 | ||
1376 | ret = parse_uint(content, &offset); | |
1377 | free(content); | |
1378 | if (ret) { | |
1379 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1380 | goto end; | |
1381 | } | |
1382 | ||
1383 | attr->offset = offset; | |
1384 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1385 | config_element_symbol_name)) { | |
1386 | xmlChar *content; | |
1387 | size_t name_len; | |
1388 | ||
1389 | /* symbol_name */ | |
1390 | content = xmlNodeGetContent(probe_attribute_node); | |
1391 | if (!content) { | |
1392 | ret = -LTTNG_ERR_NOMEM; | |
1393 | goto end; | |
1394 | } | |
1395 | ||
1396 | name_len = strlen((char *) content); | |
1397 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1398 | WARN("symbol_name too long."); | |
1399 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1400 | free(content); | |
1401 | goto end; | |
1402 | } | |
1403 | ||
1404 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1405 | free(content); | |
1406 | } | |
1407 | ret = 0; | |
1408 | end: | |
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | static | |
1413 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1414 | const char *channel_name) | |
1415 | { | |
1416 | int ret, i; | |
1417 | xmlNodePtr node; | |
1418 | struct lttng_event event; | |
1419 | char **exclusions = NULL; | |
1420 | unsigned long exclusion_count = 0; | |
1421 | char *filter_expression = NULL; | |
1422 | ||
1423 | assert(event_node); | |
1424 | assert(handle); | |
1425 | assert(channel_name); | |
1426 | ||
1427 | memset(&event, 0, sizeof(event)); | |
1428 | ||
f40eba3d JG |
1429 | /* Initialize default log level which varies by domain */ |
1430 | switch (handle->domain.type) | |
1431 | { | |
1432 | case LTTNG_DOMAIN_JUL: | |
1433 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1434 | break; | |
1435 | case LTTNG_DOMAIN_LOG4J: | |
1436 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1437 | break; | |
1438 | case LTTNG_DOMAIN_PYTHON: | |
1439 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1440 | break; | |
1441 | case LTTNG_DOMAIN_UST: | |
1442 | case LTTNG_DOMAIN_KERNEL: | |
1443 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1444 | break; | |
1445 | default: | |
1446 | assert(0); | |
1447 | } | |
1448 | ||
dcf266c0 JG |
1449 | for (node = xmlFirstElementChild(event_node); node; |
1450 | node = xmlNextElementSibling(node)) { | |
1451 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1452 | xmlChar *content; | |
1453 | size_t name_len; | |
1454 | ||
1455 | /* name */ | |
1456 | content = xmlNodeGetContent(node); | |
1457 | if (!content) { | |
1458 | ret = -LTTNG_ERR_NOMEM; | |
1459 | goto end; | |
1460 | } | |
1461 | ||
1462 | name_len = strlen((char *) content); | |
1463 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1464 | WARN("Channel name too long."); | |
1465 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1466 | free(content); | |
1467 | goto end; | |
1468 | } | |
1469 | ||
1470 | strncpy(event.name, (const char *) content, name_len); | |
1471 | free(content); | |
1472 | } else if (!strcmp((const char *) node->name, | |
1473 | config_element_enabled)) { | |
1474 | xmlChar *content = xmlNodeGetContent(node); | |
1475 | ||
1476 | /* enabled */ | |
1477 | if (!content) { | |
1478 | ret = -LTTNG_ERR_NOMEM; | |
1479 | goto end; | |
1480 | } | |
1481 | ||
1482 | ret = parse_bool(content, &event.enabled); | |
1483 | free(content); | |
1484 | if (ret) { | |
1485 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1486 | goto end; | |
1487 | } | |
1488 | } else if (!strcmp((const char *) node->name, | |
1489 | config_element_type)) { | |
1490 | xmlChar *content = xmlNodeGetContent(node); | |
1491 | ||
1492 | /* type */ | |
1493 | if (!content) { | |
1494 | ret = -LTTNG_ERR_NOMEM; | |
1495 | goto end; | |
1496 | } | |
1497 | ||
1498 | ret = get_event_type(content); | |
1499 | free(content); | |
1500 | if (ret < 0) { | |
1501 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1502 | goto end; | |
1503 | } | |
1504 | ||
1505 | event.type = ret; | |
1506 | } else if (!strcmp((const char *) node->name, | |
1507 | config_element_loglevel_type)) { | |
1508 | xmlChar *content = xmlNodeGetContent(node); | |
1509 | ||
1510 | /* loglevel_type */ | |
1511 | if (!content) { | |
1512 | ret = -LTTNG_ERR_NOMEM; | |
1513 | goto end; | |
1514 | } | |
1515 | ||
1516 | ret = get_loglevel_type(content); | |
1517 | free(content); | |
1518 | if (ret < 0) { | |
1519 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1520 | goto end; | |
1521 | } | |
1522 | ||
1523 | event.loglevel_type = ret; | |
1524 | } else if (!strcmp((const char *) node->name, | |
1525 | config_element_loglevel)) { | |
1526 | xmlChar *content; | |
1527 | int64_t loglevel = 0; | |
1528 | ||
1529 | /* loglevel */ | |
1530 | content = xmlNodeGetContent(node); | |
1531 | if (!content) { | |
1532 | ret = -LTTNG_ERR_NOMEM; | |
1533 | goto end; | |
1534 | } | |
1535 | ||
1536 | ret = parse_int(content, &loglevel); | |
1537 | free(content); | |
1538 | if (ret) { | |
1539 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1540 | goto end; | |
1541 | } | |
1542 | ||
1543 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1544 | WARN("loglevel out of range."); | |
1545 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1546 | goto end; | |
1547 | } | |
1548 | ||
1549 | event.loglevel = loglevel; | |
1550 | } else if (!strcmp((const char *) node->name, | |
1551 | config_element_filter)) { | |
1552 | xmlChar *content = | |
1553 | xmlNodeGetContent(node); | |
1554 | ||
1555 | /* filter */ | |
1556 | if (!content) { | |
1557 | ret = -LTTNG_ERR_NOMEM; | |
1558 | goto end; | |
1559 | } | |
1560 | ||
1561 | filter_expression = strdup((char *) content); | |
1562 | free(content); | |
1563 | if (!filter_expression) { | |
1564 | ret = -LTTNG_ERR_NOMEM; | |
1565 | goto end; | |
1566 | } | |
1567 | } else if (!strcmp((const char *) node->name, | |
1568 | config_element_exclusions)) { | |
1569 | xmlNodePtr exclusion_node; | |
1570 | int exclusion_index = 0; | |
1571 | ||
1572 | /* exclusions */ | |
1573 | if (exclusions) { | |
1574 | /* | |
1575 | * Exclusions has already been initialized, | |
1576 | * invalid file. | |
1577 | */ | |
1578 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1579 | goto end; | |
1580 | } | |
1581 | ||
1582 | exclusion_count = xmlChildElementCount(node); | |
1583 | if (!exclusion_count) { | |
1584 | continue; | |
1585 | } | |
1586 | ||
1587 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1588 | if (!exclusions) { | |
1589 | exclusion_count = 0; | |
1590 | ret = -LTTNG_ERR_NOMEM; | |
1591 | goto end; | |
1592 | } | |
1593 | ||
1594 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1595 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1596 | xmlChar *content = | |
1597 | xmlNodeGetContent(exclusion_node); | |
1598 | ||
1599 | if (!content) { | |
1600 | ret = -LTTNG_ERR_NOMEM; | |
1601 | goto end; | |
1602 | } | |
1603 | ||
1604 | exclusions[exclusion_index] = strdup((const char *) content); | |
1605 | free(content); | |
1606 | if (!exclusions[exclusion_index]) { | |
1607 | ret = -LTTNG_ERR_NOMEM; | |
1608 | goto end; | |
1609 | } | |
1610 | exclusion_index++; | |
1611 | } | |
1612 | ||
1613 | event.exclusion = 1; | |
1614 | } else if (!strcmp((const char *) node->name, | |
1615 | config_element_attributes)) { | |
1616 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1617 | ||
1618 | /* attributes */ | |
1619 | if (!attribute_node) { | |
1620 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1621 | goto end; | |
1622 | } | |
1623 | ||
1624 | if (!strcmp((const char *) node->name, | |
1625 | config_element_probe_attributes)) { | |
1626 | xmlNodePtr probe_attribute_node; | |
1627 | ||
1628 | /* probe_attributes */ | |
1629 | for (probe_attribute_node = | |
1630 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1631 | probe_attribute_node = xmlNextElementSibling( | |
1632 | probe_attribute_node)) { | |
1633 | ||
1634 | ret = process_probe_attribute_node(probe_attribute_node, | |
1635 | &event.attr.probe); | |
1636 | if (ret) { | |
1637 | goto end; | |
1638 | } | |
1639 | } | |
1640 | } else { | |
1641 | size_t sym_len; | |
1642 | xmlChar *content; | |
1643 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1644 | ||
1645 | /* function_attributes */ | |
1646 | content = xmlNodeGetContent(symbol_node); | |
1647 | if (!content) { | |
1648 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1649 | goto end; | |
1650 | } | |
1651 | ||
1652 | sym_len = strlen((char *) content); | |
1653 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1654 | WARN("Function name too long."); | |
1655 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1656 | free(content); | |
1657 | goto end; | |
1658 | } | |
1659 | ||
1660 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1661 | sym_len); | |
1662 | free(content); | |
1663 | } | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1668 | filter_expression, exclusion_count, exclusions); | |
065321e9 JG |
1669 | if (ret) { |
1670 | goto end; | |
1671 | } | |
1672 | ||
1673 | if (!event.enabled) { | |
1674 | /* | |
1675 | * Note that we should use lttng_disable_event_ext() (2.6+) to | |
1676 | * eliminate the risk of clashing on events of the same | |
1677 | * name (with different event types and loglevels). | |
1678 | * | |
1679 | * Unfortunately, lttng_disable_event_ext() only performs a | |
1680 | * match on the name and event type and errors out if any other | |
1681 | * event attribute is not set to its default value. | |
1682 | * | |
1683 | * This will disable all events that match this name. | |
1684 | */ | |
1685 | ret = lttng_disable_event(handle, event.name, channel_name); | |
1686 | } | |
dcf266c0 JG |
1687 | end: |
1688 | for (i = 0; i < exclusion_count; i++) { | |
1689 | free(exclusions[i]); | |
1690 | } | |
1691 | ||
1692 | free(exclusions); | |
1693 | free(filter_expression); | |
1694 | return ret; | |
1695 | } | |
1696 | ||
1697 | static | |
1698 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1699 | const char *channel_name) | |
1700 | { | |
1701 | int ret = 0; | |
1702 | xmlNodePtr node; | |
1703 | ||
1704 | assert(events_node); | |
1705 | assert(handle); | |
1706 | assert(channel_name); | |
1707 | ||
1708 | for (node = xmlFirstElementChild(events_node); node; | |
1709 | node = xmlNextElementSibling(node)) { | |
1710 | ret = process_event_node(node, handle, channel_name); | |
1711 | if (ret) { | |
1712 | goto end; | |
1713 | } | |
1714 | } | |
1715 | end: | |
1716 | return ret; | |
1717 | } | |
1718 | ||
1719 | static | |
1720 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1721 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1722 | xmlNodePtr *events_node) | |
1723 | { | |
1724 | int ret; | |
1725 | ||
1726 | assert(attr_node); | |
1727 | assert(channel); | |
1728 | assert(contexts_node); | |
1729 | assert(events_node); | |
1730 | ||
1731 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1732 | xmlChar *content; | |
1733 | size_t name_len; | |
1734 | ||
1735 | /* name */ | |
1736 | content = xmlNodeGetContent(attr_node); | |
1737 | if (!content) { | |
1738 | ret = -LTTNG_ERR_NOMEM; | |
1739 | goto end; | |
1740 | } | |
1741 | ||
1742 | name_len = strlen((char *) content); | |
1743 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1744 | WARN("Channel name too long."); | |
1745 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1746 | free(content); | |
1747 | goto end; | |
1748 | } | |
1749 | ||
1750 | strncpy(channel->name, (const char *) content, name_len); | |
1751 | free(content); | |
1752 | } else if (!strcmp((const char *) attr_node->name, | |
1753 | config_element_enabled)) { | |
1754 | xmlChar *content; | |
1755 | int enabled; | |
1756 | ||
1757 | /* enabled */ | |
1758 | content = xmlNodeGetContent(attr_node); | |
1759 | if (!content) { | |
1760 | ret = -LTTNG_ERR_NOMEM; | |
1761 | goto end; | |
1762 | } | |
1763 | ||
1764 | ret = parse_bool(content, &enabled); | |
1765 | free(content); | |
1766 | if (ret) { | |
1767 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1768 | goto end; | |
1769 | } | |
1770 | ||
1771 | channel->enabled = enabled; | |
1772 | } else if (!strcmp((const char *) attr_node->name, | |
1773 | config_element_overwrite_mode)) { | |
1774 | xmlChar *content; | |
1775 | ||
1776 | /* overwrite_mode */ | |
1777 | content = xmlNodeGetContent(attr_node); | |
1778 | if (!content) { | |
1779 | ret = -LTTNG_ERR_NOMEM; | |
1780 | goto end; | |
1781 | } | |
1782 | ||
1783 | ret = get_overwrite_mode(content); | |
1784 | free(content); | |
1785 | if (ret < 0) { | |
1786 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1787 | goto end; | |
1788 | } | |
1789 | ||
1790 | channel->attr.overwrite = ret; | |
1791 | } else if (!strcmp((const char *) attr_node->name, | |
1792 | config_element_subbuf_size)) { | |
1793 | xmlChar *content; | |
1794 | ||
1795 | /* subbuffer_size */ | |
1796 | content = xmlNodeGetContent(attr_node); | |
1797 | if (!content) { | |
1798 | ret = -LTTNG_ERR_NOMEM; | |
1799 | goto end; | |
1800 | } | |
1801 | ||
1802 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1803 | free(content); | |
1804 | if (ret) { | |
1805 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1806 | goto end; | |
1807 | } | |
1808 | } else if (!strcmp((const char *) attr_node->name, | |
1809 | config_element_num_subbuf)) { | |
1810 | xmlChar *content; | |
1811 | ||
1812 | /* subbuffer_count */ | |
1813 | content = xmlNodeGetContent(attr_node); | |
1814 | if (!content) { | |
1815 | ret = -LTTNG_ERR_NOMEM; | |
1816 | goto end; | |
1817 | } | |
1818 | ||
1819 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1820 | free(content); | |
1821 | if (ret) { | |
1822 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1823 | goto end; | |
1824 | } | |
1825 | } else if (!strcmp((const char *) attr_node->name, | |
1826 | config_element_switch_timer_interval)) { | |
1827 | xmlChar *content; | |
1828 | uint64_t switch_timer_interval = 0; | |
1829 | ||
1830 | /* switch_timer_interval */ | |
1831 | content = xmlNodeGetContent(attr_node); | |
1832 | if (!content) { | |
1833 | ret = -LTTNG_ERR_NOMEM; | |
1834 | goto end; | |
1835 | } | |
1836 | ||
1837 | ret = parse_uint(content, &switch_timer_interval); | |
1838 | free(content); | |
1839 | if (ret) { | |
1840 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1841 | goto end; | |
1842 | } | |
1843 | ||
1844 | if (switch_timer_interval > UINT_MAX) { | |
1845 | WARN("switch_timer_interval out of range."); | |
1846 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1847 | goto end; | |
1848 | } | |
1849 | ||
1850 | channel->attr.switch_timer_interval = | |
1851 | switch_timer_interval; | |
1852 | } else if (!strcmp((const char *) attr_node->name, | |
1853 | config_element_read_timer_interval)) { | |
1854 | xmlChar *content; | |
1855 | uint64_t read_timer_interval = 0; | |
1856 | ||
1857 | /* read_timer_interval */ | |
1858 | content = xmlNodeGetContent(attr_node); | |
1859 | if (!content) { | |
1860 | ret = -LTTNG_ERR_NOMEM; | |
1861 | goto end; | |
1862 | } | |
1863 | ||
1864 | ret = parse_uint(content, &read_timer_interval); | |
1865 | free(content); | |
1866 | if (ret) { | |
1867 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1868 | goto end; | |
1869 | } | |
1870 | ||
1871 | if (read_timer_interval > UINT_MAX) { | |
1872 | WARN("read_timer_interval out of range."); | |
1873 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1874 | goto end; | |
1875 | } | |
1876 | ||
1877 | channel->attr.read_timer_interval = | |
1878 | read_timer_interval; | |
1879 | } else if (!strcmp((const char *) attr_node->name, | |
1880 | config_element_output_type)) { | |
1881 | xmlChar *content; | |
1882 | ||
1883 | /* output_type */ | |
1884 | content = xmlNodeGetContent(attr_node); | |
1885 | if (!content) { | |
1886 | ret = -LTTNG_ERR_NOMEM; | |
1887 | goto end; | |
1888 | } | |
1889 | ||
1890 | ret = get_output_type(content); | |
1891 | free(content); | |
1892 | if (ret < 0) { | |
1893 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1894 | goto end; | |
1895 | } | |
1896 | ||
1897 | channel->attr.output = ret; | |
1898 | } else if (!strcmp((const char *) attr_node->name, | |
1899 | config_element_tracefile_size)) { | |
1900 | xmlChar *content; | |
1901 | ||
1902 | /* tracefile_size */ | |
1903 | content = xmlNodeGetContent(attr_node); | |
1904 | if (!content) { | |
1905 | ret = -LTTNG_ERR_NOMEM; | |
1906 | goto end; | |
1907 | } | |
1908 | ||
1909 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1910 | free(content); | |
1911 | if (ret) { | |
1912 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1913 | goto end; | |
1914 | } | |
1915 | } else if (!strcmp((const char *) attr_node->name, | |
1916 | config_element_tracefile_count)) { | |
1917 | xmlChar *content; | |
1918 | ||
1919 | /* tracefile_count */ | |
1920 | content = xmlNodeGetContent(attr_node); | |
1921 | if (!content) { | |
1922 | ret = -LTTNG_ERR_NOMEM; | |
1923 | goto end; | |
1924 | } | |
1925 | ||
1926 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1927 | free(content); | |
1928 | if (ret) { | |
1929 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1930 | goto end; | |
1931 | } | |
1932 | } else if (!strcmp((const char *) attr_node->name, | |
1933 | config_element_live_timer_interval)) { | |
1934 | xmlChar *content; | |
1935 | uint64_t live_timer_interval = 0; | |
1936 | ||
1937 | /* live_timer_interval */ | |
1938 | content = xmlNodeGetContent(attr_node); | |
1939 | if (!content) { | |
1940 | ret = -LTTNG_ERR_NOMEM; | |
1941 | goto end; | |
1942 | } | |
1943 | ||
1944 | ret = parse_uint(content, &live_timer_interval); | |
1945 | free(content); | |
1946 | if (ret) { | |
1947 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1948 | goto end; | |
1949 | } | |
1950 | ||
1951 | if (live_timer_interval > UINT_MAX) { | |
1952 | WARN("live_timer_interval out of range."); | |
1953 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1954 | goto end; | |
1955 | } | |
1956 | ||
1957 | channel->attr.live_timer_interval = | |
1958 | live_timer_interval; | |
1959 | } else if (!strcmp((const char *) attr_node->name, | |
1960 | config_element_events)) { | |
1961 | /* events */ | |
1962 | *events_node = attr_node; | |
1963 | } else { | |
1964 | /* contexts */ | |
1965 | *contexts_node = attr_node; | |
1966 | } | |
1967 | ret = 0; | |
1968 | end: | |
1969 | return ret; | |
1970 | } | |
1971 | ||
1972 | static | |
1973 | int process_context_node(xmlNodePtr context_node, | |
1974 | struct lttng_handle *handle, const char *channel_name) | |
1975 | { | |
1976 | int ret; | |
1977 | struct lttng_event_context context; | |
1978 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
1979 | ||
1980 | assert(handle); | |
1981 | assert(channel_name); | |
1982 | ||
1983 | if (!context_child_node) { | |
1984 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1985 | goto end; | |
1986 | } | |
1987 | ||
1988 | memset(&context, 0, sizeof(context)); | |
1989 | ||
1990 | if (!strcmp((const char *) context_child_node->name, | |
1991 | config_element_type)) { | |
1992 | /* type */ | |
1993 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
1994 | if (!content) { | |
1995 | ret = -LTTNG_ERR_NOMEM; | |
1996 | goto end; | |
1997 | } | |
1998 | ||
1999 | ret = get_context_type(content); | |
2000 | free(content); | |
2001 | if (ret < 0) { | |
2002 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2003 | goto end; | |
2004 | } | |
2005 | ||
2006 | context.ctx = ret; | |
2007 | } else { | |
2008 | xmlNodePtr perf_attr_node; | |
2009 | ||
2010 | /* perf */ | |
14ce5bd8 JG |
2011 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2012 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2013 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2014 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2015 | perf_attr_node; perf_attr_node = | |
2016 | xmlNextElementSibling(perf_attr_node)) { | |
2017 | if (!strcmp((const char *) perf_attr_node->name, | |
2018 | config_element_type)) { | |
2019 | xmlChar *content; | |
2020 | uint64_t type = 0; | |
2021 | ||
2022 | /* type */ | |
2023 | content = xmlNodeGetContent(perf_attr_node); | |
2024 | if (!content) { | |
2025 | ret = -LTTNG_ERR_NOMEM; | |
2026 | goto end; | |
2027 | } | |
2028 | ||
2029 | ret = parse_uint(content, &type); | |
2030 | free(content); | |
2031 | if (ret) { | |
2032 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2033 | goto end; | |
2034 | } | |
2035 | ||
2036 | if (type > UINT32_MAX) { | |
2037 | WARN("perf context type out of range."); | |
2038 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2039 | goto end; | |
2040 | } | |
2041 | ||
2042 | context.u.perf_counter.type = type; | |
2043 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2044 | config_element_config)) { | |
2045 | xmlChar *content; | |
2046 | uint64_t config = 0; | |
2047 | ||
2048 | /* config */ | |
2049 | content = xmlNodeGetContent(perf_attr_node); | |
2050 | if (!content) { | |
2051 | ret = -LTTNG_ERR_NOMEM; | |
2052 | goto end; | |
2053 | } | |
2054 | ||
2055 | ret = parse_uint(content, &config); | |
2056 | free(content); | |
2057 | if (ret) { | |
2058 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2059 | goto end; | |
2060 | } | |
2061 | ||
2062 | context.u.perf_counter.config = config; | |
2063 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2064 | config_element_name)) { | |
2065 | xmlChar *content; | |
2066 | size_t name_len; | |
2067 | ||
2068 | /* name */ | |
2069 | content = xmlNodeGetContent(perf_attr_node); | |
2070 | if (!content) { | |
2071 | ret = -LTTNG_ERR_NOMEM; | |
2072 | goto end; | |
2073 | } | |
2074 | ||
2075 | name_len = strlen((char *) content); | |
2076 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2077 | WARN("perf context name too long."); | |
2078 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2079 | free(content); | |
2080 | goto end; | |
2081 | } | |
2082 | ||
2083 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2084 | name_len); | |
2085 | free(content); | |
2086 | } | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
2091 | end: | |
2092 | return ret; | |
2093 | } | |
2094 | ||
2095 | static | |
2096 | int process_contexts_node(xmlNodePtr contexts_node, | |
2097 | struct lttng_handle *handle, const char *channel_name) | |
2098 | { | |
2099 | int ret = 0; | |
2100 | xmlNodePtr context_node; | |
2101 | ||
2102 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2103 | context_node = xmlNextElementSibling(context_node)) { | |
2104 | ret = process_context_node(context_node, handle, channel_name); | |
2105 | if (ret) { | |
2106 | goto end; | |
2107 | } | |
2108 | } | |
2109 | end: | |
2110 | return ret; | |
2111 | } | |
2112 | ||
847a5916 JR |
2113 | static |
2114 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2115 | struct lttng_handle *handle) | |
2116 | { | |
dd49e13f | 2117 | int ret = 0, child; |
847a5916 JR |
2118 | xmlNodePtr targets_node = NULL; |
2119 | xmlNodePtr node; | |
2120 | ||
2121 | assert(handle); | |
2122 | assert(pid_tracker_node); | |
2123 | /* get the targets node */ | |
2124 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2125 | node = xmlNextElementSibling(node)) { | |
2126 | if (!strcmp((const char *) node->name, | |
2127 | config_element_targets)) { | |
2128 | targets_node = node; | |
2129 | break; | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | if (!targets_node) { | |
2134 | ret = LTTNG_ERR_INVALID; | |
2135 | goto end; | |
2136 | } | |
2137 | ||
2138 | /* Go through all pid_target node */ | |
2139 | child = xmlChildElementCount(targets_node); | |
2140 | if (child == 0) { | |
2141 | /* The session is explicitly set to target nothing. */ | |
2142 | ret = lttng_untrack_pid(handle, -1); | |
2143 | if (ret) { | |
2144 | goto end; | |
2145 | } | |
2146 | } | |
2147 | for (node = xmlFirstElementChild(targets_node); node; | |
2148 | node = xmlNextElementSibling(node)) { | |
2149 | xmlNodePtr pid_target_node = node; | |
2150 | ||
2151 | /* get pid node and track it */ | |
2152 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2153 | node = xmlNextElementSibling(node)) { | |
2154 | if (!strcmp((const char *) node->name, | |
2155 | config_element_pid)) { | |
2156 | int64_t pid; | |
2157 | xmlChar *content = NULL; | |
2158 | ||
2159 | content = xmlNodeGetContent(node); | |
2160 | if (!content) { | |
2161 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2162 | goto end; | |
2163 | } | |
2164 | ||
2165 | ret = parse_int(content, &pid); | |
2166 | free(content); | |
2167 | if (ret) { | |
2168 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2169 | goto end; | |
2170 | } | |
2171 | ||
2172 | ret = lttng_track_pid(handle, (int) pid); | |
2173 | if (ret) { | |
2174 | goto end; | |
2175 | } | |
2176 | } | |
2177 | } | |
2178 | node = pid_target_node; | |
2179 | } | |
2180 | ||
2181 | end: | |
2182 | return ret; | |
2183 | } | |
2184 | ||
2185 | ||
dcf266c0 JG |
2186 | static |
2187 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2188 | { | |
2189 | int ret; | |
2190 | struct lttng_domain domain = { 0 }; | |
2191 | struct lttng_handle *handle = NULL; | |
2192 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2193 | xmlNodePtr trackers_node = NULL; |
2194 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2195 | xmlNodePtr node; |
2196 | ||
2197 | assert(session_name); | |
2198 | ||
2199 | ret = init_domain(domain_node, &domain); | |
2200 | if (ret) { | |
2201 | goto end; | |
2202 | } | |
2203 | ||
2204 | handle = lttng_create_handle(session_name, &domain); | |
2205 | if (!handle) { | |
2206 | ret = -LTTNG_ERR_NOMEM; | |
2207 | goto end; | |
2208 | } | |
2209 | ||
2210 | /* get the channels node */ | |
2211 | for (node = xmlFirstElementChild(domain_node); node; | |
2212 | node = xmlNextElementSibling(node)) { | |
2213 | if (!strcmp((const char *) node->name, | |
2214 | config_element_channels)) { | |
2215 | channels_node = node; | |
2216 | break; | |
2217 | } | |
2218 | } | |
2219 | ||
2220 | if (!channels_node) { | |
2221 | goto end; | |
2222 | } | |
2223 | ||
2224 | /* create all channels */ | |
2225 | for (node = xmlFirstElementChild(channels_node); node; | |
2226 | node = xmlNextElementSibling(node)) { | |
2227 | struct lttng_channel channel; | |
2228 | xmlNodePtr contexts_node = NULL; | |
2229 | xmlNodePtr events_node = NULL; | |
2230 | xmlNodePtr channel_attr_node; | |
2231 | ||
2232 | memset(&channel, 0, sizeof(channel)); | |
2233 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2234 | ||
2235 | for (channel_attr_node = xmlFirstElementChild(node); | |
2236 | channel_attr_node; channel_attr_node = | |
2237 | xmlNextElementSibling(channel_attr_node)) { | |
2238 | ret = process_channel_attr_node(channel_attr_node, | |
2239 | &channel, &contexts_node, &events_node); | |
2240 | if (ret) { | |
2241 | goto end; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | ret = lttng_enable_channel(handle, &channel); | |
2246 | if (ret < 0) { | |
2247 | goto end; | |
2248 | } | |
2249 | ||
2250 | ret = process_events_node(events_node, handle, channel.name); | |
2251 | if (ret) { | |
2252 | goto end; | |
2253 | } | |
2254 | ||
2255 | ret = process_contexts_node(contexts_node, handle, | |
2256 | channel.name); | |
2257 | if (ret) { | |
2258 | goto end; | |
2259 | } | |
2260 | } | |
847a5916 JR |
2261 | |
2262 | /* get the trackers node */ | |
2263 | for (node = xmlFirstElementChild(domain_node); node; | |
2264 | node = xmlNextElementSibling(node)) { | |
2265 | if (!strcmp((const char *) node->name, | |
2266 | config_element_trackers)) { | |
2267 | trackers_node = node; | |
2268 | break; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | if (!trackers_node) { | |
2273 | goto end; | |
2274 | } | |
2275 | ||
2276 | for (node = xmlFirstElementChild(trackers_node); node; | |
2277 | node = xmlNextElementSibling(node)) { | |
2278 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2279 | pid_tracker_node = node; | |
2280 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2281 | if (ret) { | |
2282 | goto end; | |
2283 | } | |
2284 | } | |
2285 | } | |
2286 | ||
2287 | if (!pid_tracker_node) { | |
2288 | lttng_track_pid(handle, -1); | |
2289 | } | |
2290 | ||
dcf266c0 JG |
2291 | end: |
2292 | lttng_destroy_handle(handle); | |
2293 | return ret; | |
2294 | } | |
2295 | ||
2296 | static | |
2297 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2298 | int override) | |
2299 | { | |
2300 | int ret, started = -1, snapshot_mode = -1; | |
2301 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2302 | xmlChar *name = NULL; |
9e7c9f56 | 2303 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2304 | xmlNodePtr domains_node = NULL; |
2305 | xmlNodePtr output_node = NULL; | |
2306 | xmlNodePtr node; | |
2307 | struct lttng_domain *kernel_domain = NULL; | |
2308 | struct lttng_domain *ust_domain = NULL; | |
2309 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2310 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2311 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2312 | |
2313 | for (node = xmlFirstElementChild(session_node); node; | |
2314 | node = xmlNextElementSibling(node)) { | |
2315 | if (!name && !strcmp((const char *) node->name, | |
2316 | config_element_name)) { | |
2317 | /* name */ | |
2318 | xmlChar *node_content = xmlNodeGetContent(node); | |
2319 | if (!node_content) { | |
2320 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2321 | goto error; |
dcf266c0 JG |
2322 | } |
2323 | ||
d324faf7 | 2324 | name = node_content; |
dcf266c0 JG |
2325 | } else if (!domains_node && !strcmp((const char *) node->name, |
2326 | config_element_domains)) { | |
2327 | /* domains */ | |
2328 | domains_node = node; | |
2329 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2330 | config_element_started)) { | |
2331 | /* started */ | |
2332 | xmlChar *node_content = xmlNodeGetContent(node); | |
2333 | if (!node_content) { | |
2334 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2335 | goto error; |
dcf266c0 JG |
2336 | } |
2337 | ||
2338 | ret = parse_bool(node_content, &started); | |
2339 | free(node_content); | |
2340 | if (ret) { | |
2341 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2342 | goto error; |
dcf266c0 JG |
2343 | } |
2344 | } else if (!output_node && !strcmp((const char *) node->name, | |
2345 | config_element_output)) { | |
2346 | /* output */ | |
2347 | output_node = node; | |
9e7c9f56 JR |
2348 | } else if (!shm_path && !strcmp((const char *) node->name, |
2349 | config_element_shared_memory_path)) { | |
2350 | /* shared memory path */ | |
2351 | xmlChar *node_content = xmlNodeGetContent(node); | |
2352 | if (!node_content) { | |
2353 | ret = -LTTNG_ERR_NOMEM; | |
2354 | goto error; | |
2355 | } | |
2356 | ||
2357 | shm_path = node_content; | |
dcf266c0 JG |
2358 | } else { |
2359 | /* attributes, snapshot_mode or live_timer_interval */ | |
2360 | xmlNodePtr attributes_child = | |
2361 | xmlFirstElementChild(node); | |
2362 | ||
2363 | if (!strcmp((const char *) attributes_child->name, | |
2364 | config_element_snapshot_mode)) { | |
2365 | /* snapshot_mode */ | |
2366 | xmlChar *snapshot_mode_content = | |
2367 | xmlNodeGetContent(attributes_child); | |
2368 | if (!snapshot_mode_content) { | |
2369 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2370 | goto error; |
dcf266c0 JG |
2371 | } |
2372 | ||
2373 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2374 | free(snapshot_mode_content); | |
2375 | if (ret) { | |
2376 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2377 | goto error; |
dcf266c0 JG |
2378 | } |
2379 | } else { | |
2380 | /* live_timer_interval */ | |
2381 | xmlChar *timer_interval_content = | |
2382 | xmlNodeGetContent(attributes_child); | |
2383 | if (!timer_interval_content) { | |
2384 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2385 | goto error; |
dcf266c0 JG |
2386 | } |
2387 | ||
2388 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2389 | free(timer_interval_content); | |
2390 | if (ret) { | |
2391 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2392 | goto error; |
dcf266c0 JG |
2393 | } |
2394 | } | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | if (!name) { | |
2399 | /* Mandatory attribute, as defined in the session XSD */ | |
2400 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2401 | goto error; |
dcf266c0 JG |
2402 | } |
2403 | ||
d324faf7 | 2404 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2405 | /* This is not the session we are looking for */ |
c2da8cde DG |
2406 | ret = -LTTNG_ERR_NO_SESSION; |
2407 | goto error; | |
dcf266c0 JG |
2408 | } |
2409 | ||
2410 | /* Init domains to create the session handles */ | |
2411 | for (node = xmlFirstElementChild(domains_node); node; | |
2412 | node = xmlNextElementSibling(node)) { | |
2413 | struct lttng_domain *domain; | |
2414 | ||
2415 | domain = zmalloc(sizeof(*domain)); | |
2416 | if (!domain) { | |
2417 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2418 | goto error; |
dcf266c0 JG |
2419 | } |
2420 | ||
2421 | ret = init_domain(node, domain); | |
2422 | if (ret) { | |
2423 | goto domain_init_error; | |
2424 | } | |
2425 | ||
2426 | switch (domain->type) { | |
2427 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2428 | if (kernel_domain) { |
2429 | /* Same domain seen twice, invalid! */ | |
2430 | goto domain_init_error; | |
2431 | } | |
dcf266c0 JG |
2432 | kernel_domain = domain; |
2433 | break; | |
2434 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2435 | if (ust_domain) { |
2436 | /* Same domain seen twice, invalid! */ | |
2437 | goto domain_init_error; | |
2438 | } | |
dcf266c0 JG |
2439 | ust_domain = domain; |
2440 | break; | |
2441 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2442 | if (jul_domain) { |
2443 | /* Same domain seen twice, invalid! */ | |
2444 | goto domain_init_error; | |
2445 | } | |
dcf266c0 JG |
2446 | jul_domain = domain; |
2447 | break; | |
5cdb6027 DG |
2448 | case LTTNG_DOMAIN_LOG4J: |
2449 | if (log4j_domain) { | |
2450 | /* Same domain seen twice, invalid! */ | |
2451 | goto domain_init_error; | |
2452 | } | |
2453 | log4j_domain = domain; | |
2454 | break; | |
0e115563 DG |
2455 | case LTTNG_DOMAIN_PYTHON: |
2456 | if (python_domain) { | |
2457 | /* Same domain seen twice, invalid! */ | |
2458 | goto domain_init_error; | |
2459 | } | |
2460 | python_domain = domain; | |
2461 | break; | |
dcf266c0 JG |
2462 | default: |
2463 | WARN("Invalid domain type"); | |
2464 | goto domain_init_error; | |
2465 | } | |
2466 | continue; | |
2467 | domain_init_error: | |
2468 | free(domain); | |
2469 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2470 | goto error; |
dcf266c0 JG |
2471 | } |
2472 | ||
2473 | if (override) { | |
2474 | /* Destroy session if it exists */ | |
d324faf7 | 2475 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2476 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2477 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2478 | goto error; |
dcf266c0 JG |
2479 | } |
2480 | } | |
2481 | ||
2482 | /* Create session type depending on output type */ | |
2483 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2484 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2485 | } else if (live_timer_interval && |
2486 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2487 | ret = create_session((const char *) name, kernel_domain, |
2488 | ust_domain, jul_domain, log4j_domain, | |
2489 | output_node, live_timer_interval); | |
dcf266c0 JG |
2490 | } else { |
2491 | /* regular session */ | |
d324faf7 JG |
2492 | ret = create_session((const char *) name, kernel_domain, |
2493 | ust_domain, jul_domain, log4j_domain, | |
2494 | output_node, UINT64_MAX); | |
dcf266c0 | 2495 | } |
dcf266c0 | 2496 | if (ret) { |
c2da8cde | 2497 | goto error; |
dcf266c0 JG |
2498 | } |
2499 | ||
9e7c9f56 JR |
2500 | if (shm_path) { |
2501 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2502 | (const char *) shm_path); |
9e7c9f56 JR |
2503 | if (ret) { |
2504 | goto error; | |
2505 | } | |
2506 | } | |
2507 | ||
dcf266c0 JG |
2508 | for (node = xmlFirstElementChild(domains_node); node; |
2509 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2510 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2511 | if (ret) { |
2512 | goto end; | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | if (started) { | |
d324faf7 | 2517 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2518 | if (ret) { |
2519 | goto end; | |
2520 | } | |
2521 | } | |
c2da8cde | 2522 | |
dcf266c0 | 2523 | end: |
b2579dc1 | 2524 | if (ret < 0) { |
d324faf7 JG |
2525 | ERR("Failed to load session %s: %s", (const char *) name, |
2526 | lttng_strerror(ret)); | |
2527 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2528 | } |
2529 | ||
c2da8cde | 2530 | error: |
dcf266c0 JG |
2531 | free(kernel_domain); |
2532 | free(ust_domain); | |
2533 | free(jul_domain); | |
5cdb6027 | 2534 | free(log4j_domain); |
135a3893 | 2535 | free(python_domain); |
d324faf7 | 2536 | xmlFree(name); |
9e7c9f56 | 2537 | xmlFree(shm_path); |
dcf266c0 JG |
2538 | return ret; |
2539 | } | |
2540 | ||
cf53c06d DG |
2541 | /* |
2542 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2543 | * Return -1 if the path is EPERM. | |
2544 | */ | |
2545 | static int validate_file_read_creds(const char *path) | |
2546 | { | |
2547 | int ret; | |
2548 | ||
2549 | assert(path); | |
2550 | ||
2551 | /* Can we read the file. */ | |
2552 | ret = access(path, R_OK); | |
2553 | if (!ret) { | |
2554 | goto valid; | |
2555 | } | |
2556 | if (errno == EACCES) { | |
2557 | return -1; | |
2558 | } else { | |
2559 | /* Invalid. */ | |
2560 | return 0; | |
2561 | } | |
2562 | valid: | |
2563 | return 1; | |
2564 | } | |
2565 | ||
dcf266c0 JG |
2566 | static |
2567 | int load_session_from_file(const char *path, const char *session_name, | |
2568 | struct session_config_validation_ctx *validation_ctx, int override) | |
2569 | { | |
2570 | int ret, session_found = !session_name; | |
2571 | xmlDocPtr doc = NULL; | |
2572 | xmlNodePtr sessions_node; | |
2573 | xmlNodePtr session_node; | |
dcf266c0 JG |
2574 | |
2575 | assert(path); | |
2576 | assert(validation_ctx); | |
2577 | ||
cf53c06d DG |
2578 | ret = validate_file_read_creds(path); |
2579 | if (ret != 1) { | |
2580 | if (ret == -1) { | |
2581 | ret = -LTTNG_ERR_EPERM; | |
2582 | } else { | |
2583 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2584 | } | |
dcf266c0 JG |
2585 | goto end; |
2586 | } | |
2587 | ||
2588 | doc = xmlParseFile(path); | |
2589 | if (!doc) { | |
2590 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2591 | goto end; | |
2592 | } | |
2593 | ||
2594 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2595 | if (ret) { | |
2596 | ERR("Session configuration file validation failed"); | |
2597 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2598 | goto end; | |
2599 | } | |
2600 | ||
2601 | sessions_node = xmlDocGetRootElement(doc); | |
2602 | if (!sessions_node) { | |
2603 | goto end; | |
2604 | } | |
2605 | ||
2606 | for (session_node = xmlFirstElementChild(sessions_node); | |
2607 | session_node; session_node = | |
2608 | xmlNextElementSibling(session_node)) { | |
2609 | ret = process_session_node(session_node, | |
2610 | session_name, override); | |
2611 | if (session_name && ret == 0) { | |
2612 | /* Target session found and loaded */ | |
2613 | session_found = 1; | |
2614 | break; | |
2615 | } | |
2616 | } | |
2617 | end: | |
2618 | xmlFreeDoc(doc); | |
2619 | if (!ret) { | |
a96bc65d | 2620 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2621 | } |
2622 | return ret; | |
2623 | } | |
2624 | ||
60f70355 JG |
2625 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2626 | static | |
2627 | struct dirent *alloc_dirent(const char *path) | |
2628 | { | |
2629 | size_t len; | |
2630 | long name_max; | |
2631 | struct dirent *entry; | |
2632 | ||
2633 | name_max = pathconf(path, _PC_NAME_MAX); | |
2634 | if (name_max == -1) { | |
2635 | name_max = PATH_MAX; | |
2636 | } | |
2637 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2638 | entry = zmalloc(len); | |
2639 | return entry; | |
2640 | } | |
2641 | ||
dcf266c0 JG |
2642 | static |
2643 | int load_session_from_path(const char *path, const char *session_name, | |
2644 | struct session_config_validation_ctx *validation_ctx, int override) | |
2645 | { | |
2646 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2647 | DIR *directory = NULL; |
2648 | ||
2649 | assert(path); | |
2650 | assert(validation_ctx); | |
2651 | ||
4af16958 DG |
2652 | directory = opendir(path); |
2653 | if (!directory) { | |
11143783 DG |
2654 | switch (errno) { |
2655 | case ENOTDIR: | |
0f0a81b5 DG |
2656 | /* Try the file loading. */ |
2657 | break; | |
11143783 DG |
2658 | case ENOENT: |
2659 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2660 | goto end; | |
2661 | default: | |
0f0a81b5 DG |
2662 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2663 | goto end; | |
4af16958 | 2664 | } |
dcf266c0 | 2665 | } |
4af16958 | 2666 | if (directory) { |
dcf266c0 JG |
2667 | struct dirent *entry; |
2668 | struct dirent *result; | |
2669 | char *file_path = NULL; | |
2670 | size_t path_len = strlen(path); | |
2671 | ||
2672 | if (path_len >= PATH_MAX) { | |
2673 | ret = -LTTNG_ERR_INVALID; | |
2674 | goto end; | |
2675 | } | |
2676 | ||
60f70355 | 2677 | entry = alloc_dirent(path); |
dcf266c0 JG |
2678 | if (!entry) { |
2679 | ret = -LTTNG_ERR_NOMEM; | |
2680 | goto end; | |
2681 | } | |
2682 | ||
dcf266c0 JG |
2683 | file_path = zmalloc(PATH_MAX); |
2684 | if (!file_path) { | |
2685 | ret = -LTTNG_ERR_NOMEM; | |
2686 | free(entry); | |
2687 | goto end; | |
2688 | } | |
2689 | ||
2690 | strncpy(file_path, path, path_len); | |
2691 | if (file_path[path_len - 1] != '/') { | |
2692 | file_path[path_len++] = '/'; | |
2693 | } | |
2694 | ||
4af16958 | 2695 | ret = 0; |
dcf266c0 JG |
2696 | /* Search for *.lttng files */ |
2697 | while (!readdir_r(directory, entry, &result) && result) { | |
2698 | size_t file_name_len = strlen(result->d_name); | |
2699 | ||
2700 | if (file_name_len <= | |
2701 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2702 | continue; | |
2703 | } | |
2704 | ||
431f702e | 2705 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2706 | continue; |
2707 | } | |
2708 | ||
2709 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2710 | result->d_name + file_name_len - sizeof( | |
2711 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2712 | continue; | |
2713 | } | |
2714 | ||
2715 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2716 | file_path[path_len + file_name_len] = '\0'; | |
2717 | ||
2718 | ret = load_session_from_file(file_path, session_name, | |
2719 | validation_ctx, override); | |
2720 | if (session_name && !ret) { | |
2721 | session_found = 1; | |
2722 | break; | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | free(entry); | |
2727 | free(file_path); | |
2728 | } else { | |
2729 | ret = load_session_from_file(path, session_name, | |
2730 | validation_ctx, override); | |
2731 | if (ret) { | |
2732 | goto end; | |
2733 | } else { | |
2734 | session_found = 1; | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | end: | |
2739 | if (directory) { | |
2740 | if (closedir(directory)) { | |
2741 | PERROR("closedir"); | |
2742 | } | |
2743 | } | |
2744 | ||
2745 | if (!session_found) { | |
a96bc65d | 2746 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2747 | } |
2748 | ||
2749 | return ret; | |
2750 | } | |
2751 | ||
ab38c13f DG |
2752 | /* |
2753 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2754 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2755 | */ |
2756 | static int validate_path_creds(const char *path) | |
2757 | { | |
2758 | int ret, uid = getuid(); | |
2759 | struct stat buf; | |
2760 | ||
2761 | assert(path); | |
2762 | ||
cf53c06d | 2763 | if (uid == 0) { |
ab38c13f DG |
2764 | goto valid; |
2765 | } | |
2766 | ||
2767 | ret = stat(path, &buf); | |
2768 | if (ret < 0) { | |
2769 | if (errno != ENOENT) { | |
2770 | PERROR("stat"); | |
2771 | } | |
2772 | ret = -LTTNG_ERR_INVALID; | |
2773 | goto valid; | |
2774 | } | |
2775 | ||
2776 | if (buf.st_uid != uid) { | |
2777 | goto invalid; | |
2778 | } | |
2779 | ||
2780 | valid: | |
ab38c13f | 2781 | return 1; |
cf53c06d DG |
2782 | invalid: |
2783 | return 0; | |
ab38c13f DG |
2784 | } |
2785 | ||
dcf266c0 JG |
2786 | LTTNG_HIDDEN |
2787 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2788 | int override, unsigned int autoload) |
dcf266c0 JG |
2789 | { |
2790 | int ret; | |
cf53c06d | 2791 | const char *path_ptr = NULL; |
dcf266c0 JG |
2792 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2793 | ||
2794 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2795 | if (ret) { | |
2796 | goto end; | |
2797 | } | |
2798 | ||
2799 | if (!path) { | |
ab38c13f DG |
2800 | char *home_path; |
2801 | const char *sys_path; | |
2802 | ||
dcf266c0 | 2803 | /* Try home path */ |
ab38c13f | 2804 | home_path = utils_get_home_dir(); |
dcf266c0 | 2805 | if (home_path) { |
ab38c13f | 2806 | char path[PATH_MAX]; |
dcf266c0 | 2807 | |
d4fcf703 DG |
2808 | /* |
2809 | * Try user session configuration path. Ignore error here so we can | |
2810 | * continue loading the system wide sessions. | |
2811 | */ | |
ab38c13f DG |
2812 | if (autoload) { |
2813 | ret = snprintf(path, sizeof(path), | |
2814 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2815 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2816 | if (ret < 0) { |
2817 | PERROR("snprintf session autoload home config path"); | |
2818 | goto end; | |
2819 | } | |
2820 | ||
2821 | /* | |
2822 | * Credentials are only validated for the autoload in order to | |
2823 | * avoid any user session daemon to try to load kernel sessions | |
2824 | * automatically and failing all the times. | |
2825 | */ | |
2826 | ret = validate_path_creds(path); | |
2827 | if (ret) { | |
2828 | path_ptr = path; | |
2829 | } | |
ab38c13f DG |
2830 | } else { |
2831 | ret = snprintf(path, sizeof(path), | |
2832 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2833 | if (ret < 0) { |
2834 | PERROR("snprintf session home config path"); | |
2835 | goto end; | |
2836 | } | |
2837 | path_ptr = path; | |
ab38c13f | 2838 | } |
cf53c06d DG |
2839 | if (path_ptr) { |
2840 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2841 | &validation_ctx, override); |
2842 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2843 | goto end; | |
2844 | } | |
2845 | /* | |
2846 | * Continue even if the session was found since we have to try | |
2847 | * the system wide sessions. | |
2848 | */ | |
ab38c13f | 2849 | } |
d4fcf703 | 2850 | } |
ab38c13f | 2851 | |
cf53c06d DG |
2852 | /* Reset path pointer for the system wide dir. */ |
2853 | path_ptr = NULL; | |
2854 | ||
d4fcf703 DG |
2855 | /* Try system wide configuration directory. */ |
2856 | if (autoload) { | |
2857 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2858 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2859 | ret = validate_path_creds(sys_path); |
2860 | if (ret) { | |
2861 | path_ptr = sys_path; | |
2862 | } | |
d4fcf703 | 2863 | } else { |
cf53c06d DG |
2864 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2865 | path_ptr = sys_path; | |
d4fcf703 DG |
2866 | } |
2867 | ||
cf53c06d DG |
2868 | if (path_ptr) { |
2869 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2870 | &validation_ctx, override); |
dcf266c0 JG |
2871 | } |
2872 | } else { | |
2873 | ret = access(path, F_OK); | |
2874 | if (ret < 0) { | |
2875 | PERROR("access"); | |
2876 | switch (errno) { | |
2877 | case ENOENT: | |
2878 | ret = -LTTNG_ERR_INVALID; | |
2879 | WARN("Session configuration path does not exist."); | |
2880 | break; | |
2881 | case EACCES: | |
2882 | ret = -LTTNG_ERR_EPERM; | |
2883 | break; | |
2884 | default: | |
2885 | ret = -LTTNG_ERR_UNK; | |
2886 | break; | |
2887 | } | |
2888 | goto end; | |
2889 | } | |
2890 | ||
2891 | ret = load_session_from_path(path, session_name, | |
2892 | &validation_ctx, override); | |
2893 | } | |
2894 | end: | |
2895 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2896 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2897 | /* | |
2898 | * Don't report an error if no sessions are found when called | |
2899 | * without a session_name or a search path. | |
2900 | */ | |
2901 | ret = 0; | |
2902 | } | |
dcf266c0 JG |
2903 | return ret; |
2904 | } |