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"; | |
045fc617 JG |
102 | const char * const config_element_context_perf = "perf"; |
103 | const char * const config_element_context_app = "app"; | |
104 | const char * const config_element_context_app_provider_name = "provider_name"; | |
105 | const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
106 | const char * const config_element_config = "config"; |
107 | const char * const config_element_started = "started"; | |
108 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
109 | const char * const config_element_loglevel = "loglevel"; | |
110 | const char * const config_element_loglevel_type = "loglevel_type"; | |
111 | const char * const config_element_filter = "filter"; | |
112 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; | |
113 | const char * const config_element_consumer_output = "consumer_output"; | |
114 | const char * const config_element_destination = "destination"; | |
115 | const char * const config_element_path = "path"; | |
116 | const char * const config_element_net_output = "net_output"; | |
117 | const char * const config_element_control_uri = "control_uri"; | |
118 | const char * const config_element_data_uri = "data_uri"; | |
119 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
120 | const char * const config_element_pid = "pid"; |
121 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 122 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
123 | const char * const config_element_pid_tracker = "pid_tracker"; |
124 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
125 | const char * const config_element_targets = "targets"; |
126 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
127 | |
128 | const char * const config_domain_type_kernel = "KERNEL"; | |
129 | const char * const config_domain_type_ust = "UST"; | |
130 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 131 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 132 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
133 | |
134 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
135 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
136 | const char * const config_buffer_type_global = "GLOBAL"; | |
137 | ||
138 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
139 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
140 | ||
141 | const char * const config_output_type_splice = "SPLICE"; | |
142 | const char * const config_output_type_mmap = "MMAP"; | |
143 | ||
144 | const char * const config_loglevel_type_all = "ALL"; | |
145 | const char * const config_loglevel_type_range = "RANGE"; | |
146 | const char * const config_loglevel_type_single = "SINGLE"; | |
147 | ||
148 | const char * const config_event_type_all = "ALL"; | |
149 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
150 | const char * const config_event_type_probe = "PROBE"; | |
151 | const char * const config_event_type_function = "FUNCTION"; | |
152 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
153 | const char * const config_event_type_noop = "NOOP"; | |
154 | const char * const config_event_type_syscall = "SYSCALL"; | |
155 | const char * const config_event_type_kprobe = "KPROBE"; | |
156 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
157 | ||
158 | const char * const config_event_context_pid = "PID"; | |
159 | const char * const config_event_context_procname = "PROCNAME"; | |
160 | const char * const config_event_context_prio = "PRIO"; | |
161 | const char * const config_event_context_nice = "NICE"; | |
162 | const char * const config_event_context_vpid = "VPID"; | |
163 | const char * const config_event_context_tid = "TID"; | |
164 | const char * const config_event_context_vtid = "VTID"; | |
165 | const char * const config_event_context_ppid = "PPID"; | |
166 | const char * const config_event_context_vppid = "VPPID"; | |
167 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
168 | const char * const config_event_context_hostname = "HOSTNAME"; | |
169 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 170 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
045fc617 JG |
171 | const char * const config_event_context_app = "APP"; |
172 | ||
fb198a11 | 173 | |
dcf266c0 JG |
174 | struct consumer_output { |
175 | int enabled; | |
176 | char *path; | |
177 | char *control_uri; | |
178 | char *data_uri; | |
179 | }; | |
180 | ||
1501a7f3 JG |
181 | static int config_entry_handler_filter(struct handler_filter_args *args, |
182 | const char *section, const char *name, const char *value) | |
183 | { | |
184 | int ret = 0; | |
185 | struct config_entry entry = { section, name, value }; | |
186 | ||
187 | assert(args); | |
188 | ||
189 | if (!section || !name || !value) { | |
190 | ret = -EIO; | |
191 | goto end; | |
192 | } | |
193 | ||
194 | if (args->section) { | |
195 | if (strcmp(args->section, section)) { | |
196 | goto end; | |
197 | } | |
198 | } | |
199 | ||
200 | ret = args->handler(&entry, args->user_data); | |
201 | end: | |
202 | return ret; | |
203 | } | |
204 | ||
205 | LTTNG_HIDDEN | |
206 | int config_get_section_entries(const char *override_path, const char *section, | |
207 | config_entry_handler_cb handler, void *user_data) | |
208 | { | |
209 | int ret = 0; | |
7ab02a27 | 210 | char *path; |
1501a7f3 JG |
211 | FILE *config_file = NULL; |
212 | struct handler_filter_args filter = { section, handler, user_data }; | |
213 | ||
7ab02a27 DG |
214 | /* First, try system-wide conf. file. */ |
215 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
216 | ||
217 | config_file = fopen(path, "r"); | |
218 | if (config_file) { | |
219 | DBG("Loading daemon conf file at %s", path); | |
220 | /* | |
221 | * Return value is not very important here since error or not, we | |
222 | * continue and try the next possible conf. file. | |
223 | */ | |
224 | (void) ini_parse_file(config_file, | |
225 | (ini_entry_handler) config_entry_handler_filter, | |
226 | (void *) &filter); | |
227 | fclose(config_file); | |
228 | } | |
229 | ||
230 | /* Second is the user local configuration. */ | |
231 | path = utils_get_home_dir(); | |
232 | if (path) { | |
233 | char fullpath[PATH_MAX]; | |
234 | ||
235 | ret = snprintf(fullpath, sizeof(fullpath), | |
236 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
237 | if (ret < 0) { | |
238 | PERROR("snprintf user conf. path"); | |
239 | goto error; | |
240 | } | |
241 | ||
242 | config_file = fopen(fullpath, "r"); | |
243 | if (config_file) { | |
244 | DBG("Loading daemon user conf file at %s", path); | |
245 | /* | |
246 | * Return value is not very important here since error or not, we | |
247 | * continue and try the next possible conf. file. | |
248 | */ | |
249 | (void) ini_parse_file(config_file, | |
250 | (ini_entry_handler) config_entry_handler_filter, | |
251 | (void *) &filter); | |
252 | fclose(config_file); | |
253 | } | |
254 | } | |
255 | ||
256 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
257 | if (override_path) { |
258 | config_file = fopen(override_path, "r"); | |
259 | if (config_file) { | |
7ab02a27 DG |
260 | DBG("Loading daemon command line conf file at %s", override_path); |
261 | (void) ini_parse_file(config_file, | |
262 | (ini_entry_handler) config_entry_handler_filter, | |
263 | (void *) &filter); | |
264 | fclose(config_file); | |
1501a7f3 JG |
265 | } else { |
266 | ERR("Failed to open daemon configuration file at %s", | |
267 | override_path); | |
268 | ret = -ENOENT; | |
7ab02a27 | 269 | goto error; |
1501a7f3 JG |
270 | } |
271 | } | |
272 | ||
7ab02a27 DG |
273 | /* Everything went well. */ |
274 | ret = 0; | |
1501a7f3 | 275 | |
7ab02a27 | 276 | error: |
1501a7f3 JG |
277 | return ret; |
278 | } | |
279 | ||
280 | LTTNG_HIDDEN | |
281 | int config_parse_value(const char *value) | |
282 | { | |
283 | int i, ret = 0; | |
284 | char *endptr, *lower_str; | |
285 | size_t len; | |
286 | unsigned long v; | |
287 | ||
288 | len = strlen(value); | |
289 | if (!len) { | |
290 | ret = -1; | |
291 | goto end; | |
292 | } | |
293 | ||
294 | v = strtoul(value, &endptr, 10); | |
295 | if (endptr != value) { | |
296 | ret = v; | |
297 | goto end; | |
298 | } | |
299 | ||
300 | lower_str = zmalloc(len + 1); | |
301 | if (!lower_str) { | |
302 | PERROR("zmalloc"); | |
303 | ret = -errno; | |
304 | goto end; | |
305 | } | |
306 | ||
307 | for (i = 0; i < len; i++) { | |
308 | lower_str[i] = tolower(value[i]); | |
309 | } | |
310 | ||
311 | if (!strcmp(lower_str, config_str_yes) || | |
312 | !strcmp(lower_str, config_str_true) || | |
313 | !strcmp(lower_str, config_str_on)) { | |
314 | ret = 1; | |
315 | } else if (!strcmp(lower_str, config_str_no) || | |
316 | !strcmp(lower_str, config_str_false) || | |
317 | !strcmp(lower_str, config_str_off)) { | |
318 | ret = 0; | |
319 | } else { | |
320 | ret = -1; | |
321 | } | |
322 | ||
323 | free(lower_str); | |
324 | end: | |
325 | return ret; | |
326 | } | |
36f2332b JG |
327 | |
328 | /* | |
329 | * Returns a xmlChar string which must be released using xmlFree(). | |
330 | */ | |
331 | static xmlChar *encode_string(const char *in_str) | |
332 | { | |
333 | xmlChar *out_str = NULL; | |
334 | xmlCharEncodingHandlerPtr handler; | |
335 | int out_len, ret, in_len; | |
336 | ||
337 | assert(in_str); | |
338 | ||
339 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
340 | if (!handler) { | |
341 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
342 | goto end; | |
343 | } | |
344 | ||
345 | in_len = strlen(in_str); | |
346 | /* | |
f76d886f JG |
347 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
348 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 349 | */ |
f76d886f | 350 | out_len = (in_len * 4) + 1; |
36f2332b JG |
351 | out_str = xmlMalloc(out_len); |
352 | if (!out_str) { | |
353 | goto end; | |
354 | } | |
355 | ||
356 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
357 | if (ret < 0) { | |
358 | xmlFree(out_str); | |
359 | out_str = NULL; | |
360 | goto end; | |
361 | } | |
362 | ||
363 | /* out_len is now the size of out_str */ | |
364 | out_str[out_len] = '\0'; | |
365 | end: | |
366 | return out_str; | |
367 | } | |
368 | ||
369 | LTTNG_HIDDEN | |
705bb62f | 370 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
371 | { |
372 | int ret; | |
373 | struct config_writer *writer; | |
374 | xmlOutputBufferPtr buffer; | |
375 | ||
376 | writer = zmalloc(sizeof(struct config_writer)); | |
377 | if (!writer) { | |
378 | PERROR("zmalloc config_writer_create"); | |
379 | goto end; | |
380 | } | |
381 | ||
382 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
383 | if (!buffer) { | |
384 | goto error_destroy; | |
385 | } | |
386 | ||
387 | writer->writer = xmlNewTextWriter(buffer); | |
388 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
389 | config_xml_encoding, NULL); | |
390 | if (ret < 0) { | |
391 | goto error_destroy; | |
392 | } | |
393 | ||
394 | ret = xmlTextWriterSetIndentString(writer->writer, | |
395 | BAD_CAST config_xml_indent_string); | |
705bb62f | 396 | if (ret) { |
36f2332b JG |
397 | goto error_destroy; |
398 | } | |
399 | ||
705bb62f JRJ |
400 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
401 | if (ret) { | |
36f2332b JG |
402 | goto error_destroy; |
403 | } | |
404 | ||
405 | end: | |
406 | return writer; | |
407 | error_destroy: | |
408 | config_writer_destroy(writer); | |
409 | return NULL; | |
410 | } | |
411 | ||
412 | LTTNG_HIDDEN | |
413 | int config_writer_destroy(struct config_writer *writer) | |
414 | { | |
415 | int ret = 0; | |
416 | ||
417 | if (!writer) { | |
418 | ret = -EINVAL; | |
419 | goto end; | |
420 | } | |
421 | ||
422 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
423 | WARN("Could not close XML document"); | |
424 | ret = -EIO; | |
425 | } | |
426 | ||
427 | if (writer->writer) { | |
428 | xmlFreeTextWriter(writer->writer); | |
429 | } | |
430 | ||
431 | free(writer); | |
432 | end: | |
433 | return ret; | |
434 | } | |
435 | ||
436 | LTTNG_HIDDEN | |
437 | int config_writer_open_element(struct config_writer *writer, | |
438 | const char *element_name) | |
439 | { | |
440 | int ret; | |
441 | xmlChar *encoded_element_name; | |
442 | ||
443 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
444 | ret = -1; | |
445 | goto end; | |
446 | } | |
447 | ||
448 | encoded_element_name = encode_string(element_name); | |
449 | if (!encoded_element_name) { | |
450 | ret = -1; | |
451 | goto end; | |
452 | } | |
453 | ||
454 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
455 | xmlFree(encoded_element_name); | |
456 | end: | |
457 | return ret > 0 ? 0 : ret; | |
458 | } | |
459 | ||
460 | LTTNG_HIDDEN | |
461 | int config_writer_close_element(struct config_writer *writer) | |
462 | { | |
463 | int ret; | |
464 | ||
465 | if (!writer || !writer->writer) { | |
466 | ret = -1; | |
467 | goto end; | |
468 | } | |
469 | ||
470 | ret = xmlTextWriterEndElement(writer->writer); | |
471 | end: | |
472 | return ret > 0 ? 0 : ret; | |
473 | } | |
474 | ||
475 | LTTNG_HIDDEN | |
476 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
477 | const char *element_name, uint64_t value) | |
478 | { | |
479 | int ret; | |
480 | xmlChar *encoded_element_name; | |
481 | ||
482 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
483 | ret = -1; | |
484 | goto end; | |
485 | } | |
486 | ||
487 | encoded_element_name = encode_string(element_name); | |
488 | if (!encoded_element_name) { | |
489 | ret = -1; | |
490 | goto end; | |
491 | } | |
492 | ||
493 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
494 | encoded_element_name, "%" PRIu64, value); | |
495 | xmlFree(encoded_element_name); | |
496 | end: | |
497 | return ret > 0 ? 0 : ret; | |
498 | } | |
499 | ||
500 | LTTNG_HIDDEN | |
501 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
502 | const char *element_name, int64_t value) | |
503 | { | |
504 | int ret; | |
505 | xmlChar *encoded_element_name; | |
506 | ||
507 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
508 | ret = -1; | |
509 | goto end; | |
510 | } | |
511 | ||
512 | encoded_element_name = encode_string(element_name); | |
513 | if (!encoded_element_name) { | |
514 | ret = -1; | |
515 | goto end; | |
516 | } | |
517 | ||
518 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
519 | encoded_element_name, "%" PRIi64, value); | |
520 | xmlFree(encoded_element_name); | |
521 | end: | |
522 | return ret > 0 ? 0 : ret; | |
523 | } | |
524 | ||
525 | LTTNG_HIDDEN | |
526 | int config_writer_write_element_bool(struct config_writer *writer, | |
527 | const char *element_name, int value) | |
528 | { | |
529 | return config_writer_write_element_string(writer, element_name, | |
530 | value ? config_xml_true : config_xml_false); | |
531 | } | |
532 | ||
533 | LTTNG_HIDDEN | |
534 | int config_writer_write_element_string(struct config_writer *writer, | |
535 | const char *element_name, const char *value) | |
536 | { | |
537 | int ret; | |
538 | xmlChar *encoded_element_name = NULL; | |
539 | xmlChar *encoded_value = NULL; | |
540 | ||
541 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
542 | !value) { | |
543 | ret = -1; | |
544 | goto end; | |
545 | } | |
546 | ||
547 | encoded_element_name = encode_string(element_name); | |
548 | if (!encoded_element_name) { | |
549 | ret = -1; | |
550 | goto end; | |
551 | } | |
552 | ||
553 | encoded_value = encode_string(value); | |
554 | if (!encoded_value) { | |
555 | ret = -1; | |
556 | goto end; | |
557 | } | |
558 | ||
559 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 560 | encoded_value); |
36f2332b JG |
561 | end: |
562 | xmlFree(encoded_element_name); | |
563 | xmlFree(encoded_value); | |
564 | return ret > 0 ? 0 : ret; | |
565 | } | |
dcf266c0 JG |
566 | |
567 | static | |
568 | void xml_error_handler(void *ctx, const char *format, ...) | |
569 | { | |
570 | char *errMsg; | |
571 | va_list args; | |
572 | int ret; | |
573 | ||
574 | va_start(args, format); | |
575 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 576 | va_end(args); |
dcf266c0 JG |
577 | if (ret == -1) { |
578 | ERR("String allocation failed in xml error handler"); | |
579 | return; | |
580 | } | |
dcf266c0 JG |
581 | |
582 | fprintf(stderr, "XML Error: %s", errMsg); | |
583 | free(errMsg); | |
584 | } | |
585 | ||
586 | static | |
587 | void fini_session_config_validation_ctx( | |
588 | struct session_config_validation_ctx *ctx) | |
589 | { | |
590 | if (ctx->parser_ctx) { | |
591 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
592 | } | |
593 | ||
594 | if (ctx->schema) { | |
595 | xmlSchemaFree(ctx->schema); | |
596 | } | |
597 | ||
598 | if (ctx->schema_validation_ctx) { | |
599 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
600 | } | |
601 | ||
602 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
603 | } | |
604 | ||
54e399cb JG |
605 | static |
606 | char *get_session_config_xsd_path() | |
607 | { | |
608 | char *xsd_path; | |
e8fa9fb0 | 609 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
610 | size_t base_path_len; |
611 | size_t max_path_len; | |
612 | ||
613 | if (!base_path) { | |
614 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
615 | } | |
616 | ||
617 | base_path_len = strlen(base_path); | |
618 | max_path_len = base_path_len + | |
619 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
620 | xsd_path = zmalloc(max_path_len); | |
621 | if (!xsd_path) { | |
622 | goto end; | |
623 | } | |
624 | ||
625 | strncpy(xsd_path, base_path, max_path_len); | |
626 | if (xsd_path[base_path_len - 1] != '/') { | |
627 | xsd_path[base_path_len++] = '/'; | |
628 | } | |
629 | ||
630 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
631 | max_path_len - base_path_len); | |
632 | end: | |
633 | return xsd_path; | |
634 | } | |
635 | ||
dcf266c0 JG |
636 | static |
637 | int init_session_config_validation_ctx( | |
638 | struct session_config_validation_ctx *ctx) | |
639 | { | |
640 | int ret; | |
54e399cb JG |
641 | char *xsd_path = get_session_config_xsd_path(); |
642 | ||
643 | if (!xsd_path) { | |
644 | ret = -LTTNG_ERR_NOMEM; | |
645 | goto end; | |
646 | } | |
dcf266c0 | 647 | |
54e399cb | 648 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
649 | if (!ctx->parser_ctx) { |
650 | ERR("XSD parser context creation failed"); | |
651 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
652 | goto end; | |
653 | } | |
654 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
655 | xml_error_handler, NULL); | |
656 | ||
657 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
658 | if (!ctx->schema) { | |
659 | ERR("XSD parsing failed"); | |
660 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
661 | goto end; | |
662 | } | |
663 | ||
664 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
665 | if (!ctx->schema_validation_ctx) { | |
666 | ERR("XSD validation context creation failed"); | |
667 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
668 | goto end; | |
669 | } | |
670 | ||
671 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
672 | xml_error_handler, NULL); | |
673 | ret = 0; | |
674 | ||
675 | end: | |
676 | if (ret) { | |
677 | fini_session_config_validation_ctx(ctx); | |
678 | } | |
679 | ||
54e399cb | 680 | free(xsd_path); |
dcf266c0 JG |
681 | return ret; |
682 | } | |
683 | ||
684 | static | |
685 | int parse_uint(xmlChar *str, uint64_t *val) | |
686 | { | |
687 | int ret; | |
688 | char *endptr; | |
689 | ||
690 | if (!str || !val) { | |
691 | ret = -1; | |
692 | goto end; | |
693 | } | |
694 | ||
695 | *val = strtoull((const char *) str, &endptr, 10); | |
696 | if (!endptr || *endptr) { | |
697 | ret = -1; | |
698 | } else { | |
699 | ret = 0; | |
700 | } | |
701 | ||
702 | end: | |
703 | return ret; | |
704 | } | |
705 | ||
706 | static | |
707 | int parse_int(xmlChar *str, int64_t *val) | |
708 | { | |
709 | int ret; | |
710 | char *endptr; | |
711 | ||
712 | if (!str || !val) { | |
713 | ret = -1; | |
714 | goto end; | |
715 | } | |
716 | ||
717 | *val = strtoll((const char *) str, &endptr, 10); | |
718 | if (!endptr || *endptr) { | |
719 | ret = -1; | |
720 | } else { | |
721 | ret = 0; | |
722 | } | |
723 | ||
724 | end: | |
725 | return ret; | |
726 | } | |
727 | ||
728 | static | |
729 | int parse_bool(xmlChar *str, int *val) | |
730 | { | |
731 | int ret = 0; | |
732 | ||
733 | if (!str || !val) { | |
734 | ret = -1; | |
735 | goto end; | |
736 | } | |
737 | ||
738 | if (!strcmp((const char *) str, config_xml_true)) { | |
739 | *val = 1; | |
740 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
741 | *val = 0; | |
742 | } else { | |
743 | WARN("Invalid boolean value encoutered (%s).", | |
744 | (const char *) str); | |
745 | ret = -1; | |
746 | } | |
747 | end: | |
748 | return ret; | |
749 | } | |
750 | ||
751 | static | |
752 | int get_domain_type(xmlChar *domain) | |
753 | { | |
754 | int ret; | |
755 | ||
756 | if (!domain) { | |
757 | goto error; | |
758 | } | |
759 | ||
760 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
761 | ret = LTTNG_DOMAIN_KERNEL; | |
762 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
763 | ret = LTTNG_DOMAIN_UST; | |
764 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
765 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
766 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
767 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
768 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
769 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
770 | } else { |
771 | goto error; | |
772 | } | |
773 | ||
774 | return ret; | |
775 | error: | |
776 | return -1; | |
777 | } | |
778 | ||
779 | static | |
780 | int get_buffer_type(xmlChar *buffer_type) | |
781 | { | |
782 | int ret; | |
783 | ||
784 | if (!buffer_type) { | |
785 | goto error; | |
786 | } | |
787 | ||
788 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
789 | ret = LTTNG_BUFFER_GLOBAL; | |
790 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
791 | ret = LTTNG_BUFFER_PER_UID; | |
792 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
793 | ret = LTTNG_BUFFER_PER_PID; | |
794 | } else { | |
795 | goto error; | |
796 | } | |
797 | ||
798 | return ret; | |
799 | error: | |
800 | return -1; | |
801 | } | |
802 | ||
803 | static | |
804 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
805 | { | |
806 | int ret; | |
807 | ||
808 | if (!overwrite_mode) { | |
809 | goto error; | |
810 | } | |
811 | ||
812 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
813 | ret = 1; | |
814 | } else if (!strcmp((char *) overwrite_mode, | |
815 | config_overwrite_mode_discard)) { | |
816 | ret = 0; | |
817 | } else { | |
818 | goto error; | |
819 | } | |
820 | ||
821 | return ret; | |
822 | error: | |
823 | return -1; | |
824 | } | |
825 | ||
826 | static | |
827 | int get_output_type(xmlChar *output_type) | |
828 | { | |
829 | int ret; | |
830 | ||
831 | if (!output_type) { | |
832 | goto error; | |
833 | } | |
834 | ||
835 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
836 | ret = LTTNG_EVENT_MMAP; | |
837 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
838 | ret = LTTNG_EVENT_SPLICE; | |
839 | } else { | |
840 | goto error; | |
841 | } | |
842 | ||
843 | return ret; | |
844 | error: | |
845 | return -1; | |
846 | } | |
847 | ||
848 | static | |
849 | int get_event_type(xmlChar *event_type) | |
850 | { | |
851 | int ret; | |
852 | ||
853 | if (!event_type) { | |
854 | goto error; | |
855 | } | |
856 | ||
857 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
858 | ret = LTTNG_EVENT_ALL; | |
859 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
860 | ret = LTTNG_EVENT_TRACEPOINT; | |
861 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
862 | ret = LTTNG_EVENT_PROBE; | |
863 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
864 | ret = LTTNG_EVENT_FUNCTION; | |
865 | } else if (!strcmp((char *) event_type, | |
866 | config_event_type_function_entry)) { | |
867 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
868 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
869 | ret = LTTNG_EVENT_NOOP; | |
870 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
871 | ret = LTTNG_EVENT_SYSCALL; | |
872 | } else { | |
873 | goto error; | |
874 | } | |
875 | ||
876 | return ret; | |
877 | error: | |
878 | return -1; | |
879 | } | |
880 | ||
881 | static | |
882 | int get_loglevel_type(xmlChar *loglevel_type) | |
883 | { | |
884 | int ret; | |
885 | ||
886 | if (!loglevel_type) { | |
887 | goto error; | |
888 | } | |
889 | ||
890 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
891 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
892 | } else if (!strcmp((char *) loglevel_type, | |
893 | config_loglevel_type_range)) { | |
894 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
895 | } else if (!strcmp((char *) loglevel_type, | |
896 | config_loglevel_type_single)) { | |
897 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
898 | } else { | |
899 | goto error; | |
900 | } | |
901 | ||
902 | return ret; | |
903 | error: | |
904 | return -1; | |
905 | } | |
906 | ||
907 | /* | |
908 | * Return the context type or -1 on error. | |
909 | */ | |
910 | static | |
911 | int get_context_type(xmlChar *context_type) | |
912 | { | |
913 | int ret; | |
914 | ||
915 | if (!context_type) { | |
916 | goto error; | |
917 | } | |
918 | ||
919 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
920 | ret = LTTNG_EVENT_CONTEXT_PID; | |
921 | } else if (!strcmp((char *) context_type, | |
922 | config_event_context_procname)) { | |
923 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
924 | } else if (!strcmp((char *) context_type, | |
925 | config_event_context_prio)) { | |
926 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
927 | } else if (!strcmp((char *) context_type, | |
928 | config_event_context_nice)) { | |
929 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
930 | } else if (!strcmp((char *) context_type, | |
931 | config_event_context_vpid)) { | |
932 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
933 | } else if (!strcmp((char *) context_type, | |
934 | config_event_context_tid)) { | |
935 | ret = LTTNG_EVENT_CONTEXT_TID; | |
936 | } else if (!strcmp((char *) context_type, | |
937 | config_event_context_vtid)) { | |
938 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
939 | } else if (!strcmp((char *) context_type, | |
940 | config_event_context_ppid)) { | |
941 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
942 | } else if (!strcmp((char *) context_type, | |
943 | config_event_context_vppid)) { | |
944 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
945 | } else if (!strcmp((char *) context_type, | |
946 | config_event_context_pthread_id)) { | |
947 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
948 | } else if (!strcmp((char *) context_type, | |
949 | config_event_context_hostname)) { | |
950 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
951 | } else if (!strcmp((char *) context_type, | |
952 | config_event_context_ip)) { | |
953 | ret = LTTNG_EVENT_CONTEXT_IP; | |
954 | } else { | |
955 | goto error; | |
956 | } | |
957 | ||
958 | return ret; | |
959 | error: | |
960 | return -1; | |
961 | } | |
962 | ||
963 | static | |
964 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
965 | { | |
966 | int ret; | |
967 | xmlNodePtr node; | |
968 | ||
969 | for (node = xmlFirstElementChild(domain_node); node; | |
970 | node = xmlNextElementSibling(node)) { | |
971 | if (!strcmp((const char *) node->name, config_element_type)) { | |
972 | /* domain type */ | |
973 | xmlChar *node_content = xmlNodeGetContent(node); | |
974 | if (!node_content) { | |
975 | ret = -LTTNG_ERR_NOMEM; | |
976 | goto end; | |
977 | } | |
978 | ||
979 | ret = get_domain_type(node_content); | |
980 | free(node_content); | |
981 | if (ret < 0) { | |
982 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
983 | goto end; | |
984 | } | |
985 | ||
986 | domain->type = ret; | |
987 | } else if (!strcmp((const char *) node->name, | |
988 | config_element_buffer_type)) { | |
989 | /* buffer type */ | |
990 | xmlChar *node_content = xmlNodeGetContent(node); | |
991 | if (!node_content) { | |
992 | ret = -LTTNG_ERR_NOMEM; | |
993 | goto end; | |
994 | } | |
995 | ||
996 | ret = get_buffer_type(node_content); | |
997 | free(node_content); | |
998 | if (ret < 0) { | |
999 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1000 | goto end; | |
1001 | } | |
1002 | ||
1003 | domain->buf_type = ret; | |
1004 | } | |
1005 | } | |
1006 | ret = 0; | |
1007 | end: | |
1008 | return ret; | |
1009 | } | |
1010 | ||
1011 | static | |
1012 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1013 | char **data_uri) | |
1014 | { | |
1015 | xmlNodePtr node; | |
1016 | ||
1017 | for (node = xmlFirstElementChild(net_output_node); node; | |
1018 | node = xmlNextElementSibling(node)) { | |
1019 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1020 | /* control_uri */ | |
1021 | *control_uri = (char *) xmlNodeGetContent(node); | |
1022 | if (!*control_uri) { | |
1023 | break; | |
1024 | } | |
1025 | } else { | |
1026 | /* data_uri */ | |
1027 | *data_uri = (char *) xmlNodeGetContent(node); | |
1028 | if (!*data_uri) { | |
1029 | break; | |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1035 | } | |
1036 | ||
1037 | static | |
1038 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1039 | struct consumer_output *output) | |
1040 | { | |
1041 | int ret; | |
1042 | xmlNodePtr node; | |
1043 | ||
1044 | assert(output); | |
1045 | ||
1046 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1047 | node = xmlNextElementSibling(node)) { | |
1048 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1049 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1050 | ||
1051 | /* enabled */ | |
1052 | if (!enabled_str) { | |
1053 | ret = -LTTNG_ERR_NOMEM; | |
1054 | goto end; | |
1055 | } | |
1056 | ||
1057 | ret = parse_bool(enabled_str, &output->enabled); | |
1058 | free(enabled_str); | |
1059 | if (ret) { | |
1060 | goto end; | |
1061 | } | |
1062 | } else { | |
1063 | xmlNodePtr output_type_node; | |
1064 | ||
1065 | /* destination */ | |
1066 | output_type_node = xmlFirstElementChild(node); | |
1067 | if (!output_type_node) { | |
1068 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1069 | goto end; | |
1070 | } | |
1071 | ||
1072 | if (!strcmp((const char *) output_type_node->name, | |
1073 | config_element_path)) { | |
1074 | /* path */ | |
1075 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1076 | if (!output->path) { | |
1077 | ret = -LTTNG_ERR_NOMEM; | |
1078 | goto end; | |
1079 | } | |
1080 | } else { | |
1081 | /* net_output */ | |
1082 | ret = get_net_output_uris(output_type_node, | |
1083 | &output->control_uri, &output->data_uri); | |
1084 | if (ret) { | |
1085 | goto end; | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | } | |
1090 | ret = 0; | |
1091 | ||
1092 | end: | |
1093 | if (ret) { | |
1094 | free(output->path); | |
1095 | free(output->control_uri); | |
1096 | free(output->data_uri); | |
1097 | memset(output, 0, sizeof(struct consumer_output)); | |
1098 | } | |
1099 | return ret; | |
1100 | } | |
1101 | ||
1102 | static | |
1103 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1104 | const char *control_uri, const char *data_uri) | |
1105 | { | |
1106 | int ret; | |
1107 | struct lttng_handle *handle; | |
1108 | const char *uri = NULL; | |
1109 | ||
1110 | assert(name); | |
1111 | assert(domain); | |
1112 | ||
1113 | handle = lttng_create_handle(name, domain); | |
1114 | if (!handle) { | |
1115 | ret = -LTTNG_ERR_NOMEM; | |
1116 | goto end; | |
1117 | } | |
1118 | ||
1119 | if (!control_uri || !data_uri) { | |
1120 | uri = control_uri ? control_uri : data_uri; | |
1121 | control_uri = uri; | |
1122 | data_uri = uri; | |
1123 | } | |
1124 | ||
1125 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1126 | lttng_destroy_handle(handle); | |
1127 | end: | |
1128 | return ret; | |
1129 | } | |
1130 | ||
1131 | static | |
1132 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1133 | { | |
1134 | int ret; | |
1135 | xmlNodePtr node = NULL; | |
1136 | xmlNodePtr snapshot_output_list_node; | |
1137 | xmlNodePtr snapshot_output_node; | |
1138 | ||
1139 | assert(session_name); | |
1140 | ||
1141 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1142 | if (ret) { | |
1143 | goto end; | |
1144 | } | |
1145 | ||
1146 | if (!output_node) { | |
1147 | goto end; | |
1148 | } | |
1149 | ||
1150 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1151 | ||
1152 | /* Parse and create snapshot outputs */ | |
1153 | ||
1154 | for (snapshot_output_node = | |
1155 | xmlFirstElementChild(snapshot_output_list_node); | |
1156 | snapshot_output_node; snapshot_output_node = | |
1157 | xmlNextElementSibling(snapshot_output_node)) { | |
1158 | char *name = NULL; | |
1159 | uint64_t max_size = UINT64_MAX; | |
1160 | struct consumer_output output = { 0 }; | |
1161 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1162 | ||
1163 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1164 | node = xmlNextElementSibling(node)) { | |
1165 | if (!strcmp((const char *) node->name, | |
1166 | config_element_name)) { | |
1167 | /* name */ | |
1168 | name = (char *) xmlNodeGetContent(node); | |
1169 | if (!name) { | |
1170 | ret = -LTTNG_ERR_NOMEM; | |
1171 | goto error_snapshot_output; | |
1172 | } | |
1173 | } else if (!strcmp((const char *) node->name, | |
1174 | config_element_max_size)) { | |
1175 | xmlChar *content = xmlNodeGetContent(node); | |
1176 | ||
1177 | /* max_size */ | |
1178 | if (!content) { | |
1179 | ret = -LTTNG_ERR_NOMEM; | |
1180 | goto error_snapshot_output; | |
1181 | } | |
1182 | ret = parse_uint(content, &max_size); | |
1183 | free(content); | |
1184 | if (ret) { | |
1185 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1186 | goto error_snapshot_output; | |
1187 | } | |
1188 | } else { | |
1189 | /* consumer_output */ | |
1190 | ret = process_consumer_output(node, &output); | |
1191 | if (ret) { | |
1192 | goto error_snapshot_output; | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | snapshot_output = lttng_snapshot_output_create(); | |
1198 | if (!snapshot_output) { | |
1199 | ret = -LTTNG_ERR_NOMEM; | |
1200 | goto error_snapshot_output; | |
1201 | } | |
1202 | ||
1203 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1204 | if (ret) { | |
1205 | goto error_snapshot_output; | |
1206 | } | |
1207 | ||
1208 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1209 | if (ret) { | |
1210 | goto error_snapshot_output; | |
1211 | } | |
1212 | ||
1213 | if (output.path) { | |
1214 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1215 | snapshot_output); | |
1216 | if (ret) { | |
1217 | goto error_snapshot_output; | |
1218 | } | |
1219 | } else { | |
1220 | if (output.control_uri) { | |
1221 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1222 | snapshot_output); | |
1223 | if (ret) { | |
1224 | goto error_snapshot_output; | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | if (output.data_uri) { | |
1229 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1230 | snapshot_output); | |
1231 | if (ret) { | |
1232 | goto error_snapshot_output; | |
1233 | } | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1238 | error_snapshot_output: | |
1239 | free(name); | |
1240 | free(output.path); | |
1241 | free(output.control_uri); | |
1242 | free(output.data_uri); | |
1243 | lttng_snapshot_output_destroy(snapshot_output); | |
1244 | if (ret) { | |
1245 | goto end; | |
1246 | } | |
1247 | } | |
1248 | end: | |
1249 | return ret; | |
1250 | } | |
1251 | ||
1252 | static | |
1253 | int create_session(const char *name, | |
1254 | struct lttng_domain *kernel_domain, | |
1255 | struct lttng_domain *ust_domain, | |
1256 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1257 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1258 | xmlNodePtr output_node, |
1259 | uint64_t live_timer_interval) | |
1260 | { | |
1261 | int ret; | |
1262 | struct consumer_output output = { 0 }; | |
1263 | xmlNodePtr consumer_output_node; | |
1264 | ||
1265 | assert(name); | |
dcf266c0 JG |
1266 | |
1267 | if (output_node) { | |
1268 | consumer_output_node = xmlFirstElementChild(output_node); | |
1269 | if (!consumer_output_node) { | |
1270 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1271 | goto end; | |
1272 | } | |
1273 | ||
1274 | if (strcmp((const char *) consumer_output_node->name, | |
1275 | config_element_consumer_output)) { | |
1276 | WARN("Invalid output type, expected %s node", | |
1277 | config_element_consumer_output); | |
1278 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1279 | goto end; | |
1280 | } | |
1281 | ||
1282 | ret = process_consumer_output(consumer_output_node, &output); | |
1283 | if (ret) { | |
1284 | goto end; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | if (live_timer_interval != UINT64_MAX && | |
1289 | !output.control_uri && !output.data_uri) { | |
1290 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1291 | goto end; | |
1292 | } | |
1293 | ||
1294 | if (output.control_uri || output.data_uri) { | |
1295 | int i; | |
1296 | struct lttng_domain *domain; | |
1297 | struct lttng_domain *domains[] = | |
c8c5f7ce | 1298 | { kernel_domain, ust_domain, jul_domain, log4j_domain }; |
dcf266c0 JG |
1299 | |
1300 | /* network destination */ | |
1301 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1302 | /* |
1303 | * URLs are provided for sure since the test above make sure that | |
1304 | * with a live timer the data and control URIs are provided. So, | |
1305 | * NULL is passed here and will be set right after. | |
1306 | */ | |
1307 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1308 | } else { |
1309 | ret = lttng_create_session(name, NULL); | |
1310 | } | |
1311 | if (ret) { | |
1312 | goto end; | |
1313 | } | |
1314 | ||
301423df | 1315 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1316 | domain = domains[i]; |
1317 | if (!domain) { | |
1318 | continue; | |
1319 | } | |
1320 | ||
1321 | ret = create_session_net_output(name, domain, output.control_uri, | |
1322 | output.data_uri); | |
1323 | if (ret) { | |
1324 | goto end; | |
1325 | } | |
1326 | } | |
1327 | } else { | |
1328 | /* either local output or no output */ | |
1329 | ret = lttng_create_session(name, output.path); | |
1330 | if (ret) { | |
1331 | goto end; | |
1332 | } | |
1333 | } | |
1334 | end: | |
1335 | free(output.path); | |
1336 | free(output.control_uri); | |
1337 | free(output.data_uri); | |
1338 | return ret; | |
1339 | } | |
1340 | static | |
1341 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1342 | struct lttng_event_probe_attr *attr) | |
1343 | { | |
1344 | int ret; | |
1345 | ||
1346 | assert(probe_attribute_node); | |
1347 | assert(attr); | |
1348 | ||
1349 | if (!strcmp((const char *) probe_attribute_node->name, | |
1350 | config_element_address)) { | |
1351 | xmlChar *content; | |
1352 | uint64_t addr = 0; | |
1353 | ||
1354 | /* addr */ | |
1355 | content = xmlNodeGetContent(probe_attribute_node); | |
1356 | if (!content) { | |
1357 | ret = -LTTNG_ERR_NOMEM; | |
1358 | goto end; | |
1359 | } | |
1360 | ||
1361 | ret = parse_uint(content, &addr); | |
1362 | free(content); | |
1363 | if (ret) { | |
1364 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1365 | goto end; | |
1366 | } | |
1367 | ||
1368 | attr->addr = addr; | |
1369 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1370 | config_element_offset)) { | |
1371 | xmlChar *content; | |
1372 | uint64_t offset = 0; | |
1373 | ||
1374 | /* offset */ | |
1375 | content = xmlNodeGetContent(probe_attribute_node); | |
1376 | if (!content) { | |
1377 | ret = -LTTNG_ERR_NOMEM; | |
1378 | goto end; | |
1379 | } | |
1380 | ||
1381 | ret = parse_uint(content, &offset); | |
1382 | free(content); | |
1383 | if (ret) { | |
1384 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1385 | goto end; | |
1386 | } | |
1387 | ||
1388 | attr->offset = offset; | |
1389 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1390 | config_element_symbol_name)) { | |
1391 | xmlChar *content; | |
1392 | size_t name_len; | |
1393 | ||
1394 | /* symbol_name */ | |
1395 | content = xmlNodeGetContent(probe_attribute_node); | |
1396 | if (!content) { | |
1397 | ret = -LTTNG_ERR_NOMEM; | |
1398 | goto end; | |
1399 | } | |
1400 | ||
1401 | name_len = strlen((char *) content); | |
1402 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1403 | WARN("symbol_name too long."); | |
1404 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1405 | free(content); | |
1406 | goto end; | |
1407 | } | |
1408 | ||
1409 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1410 | free(content); | |
1411 | } | |
1412 | ret = 0; | |
1413 | end: | |
1414 | return ret; | |
1415 | } | |
1416 | ||
1417 | static | |
1418 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1419 | const char *channel_name) | |
1420 | { | |
1421 | int ret, i; | |
1422 | xmlNodePtr node; | |
1423 | struct lttng_event event; | |
1424 | char **exclusions = NULL; | |
1425 | unsigned long exclusion_count = 0; | |
1426 | char *filter_expression = NULL; | |
1427 | ||
1428 | assert(event_node); | |
1429 | assert(handle); | |
1430 | assert(channel_name); | |
1431 | ||
1432 | memset(&event, 0, sizeof(event)); | |
1433 | ||
f40eba3d JG |
1434 | /* Initialize default log level which varies by domain */ |
1435 | switch (handle->domain.type) | |
1436 | { | |
1437 | case LTTNG_DOMAIN_JUL: | |
1438 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1439 | break; | |
1440 | case LTTNG_DOMAIN_LOG4J: | |
1441 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1442 | break; | |
1443 | case LTTNG_DOMAIN_PYTHON: | |
1444 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1445 | break; | |
1446 | case LTTNG_DOMAIN_UST: | |
1447 | case LTTNG_DOMAIN_KERNEL: | |
1448 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1449 | break; | |
1450 | default: | |
1451 | assert(0); | |
1452 | } | |
1453 | ||
dcf266c0 JG |
1454 | for (node = xmlFirstElementChild(event_node); node; |
1455 | node = xmlNextElementSibling(node)) { | |
1456 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1457 | xmlChar *content; | |
1458 | size_t name_len; | |
1459 | ||
1460 | /* name */ | |
1461 | content = xmlNodeGetContent(node); | |
1462 | if (!content) { | |
1463 | ret = -LTTNG_ERR_NOMEM; | |
1464 | goto end; | |
1465 | } | |
1466 | ||
1467 | name_len = strlen((char *) content); | |
1468 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1469 | WARN("Channel name too long."); | |
1470 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1471 | free(content); | |
1472 | goto end; | |
1473 | } | |
1474 | ||
1475 | strncpy(event.name, (const char *) content, name_len); | |
1476 | free(content); | |
1477 | } else if (!strcmp((const char *) node->name, | |
1478 | config_element_enabled)) { | |
1479 | xmlChar *content = xmlNodeGetContent(node); | |
1480 | ||
1481 | /* enabled */ | |
1482 | if (!content) { | |
1483 | ret = -LTTNG_ERR_NOMEM; | |
1484 | goto end; | |
1485 | } | |
1486 | ||
1487 | ret = parse_bool(content, &event.enabled); | |
1488 | free(content); | |
1489 | if (ret) { | |
1490 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1491 | goto end; | |
1492 | } | |
1493 | } else if (!strcmp((const char *) node->name, | |
1494 | config_element_type)) { | |
1495 | xmlChar *content = xmlNodeGetContent(node); | |
1496 | ||
1497 | /* type */ | |
1498 | if (!content) { | |
1499 | ret = -LTTNG_ERR_NOMEM; | |
1500 | goto end; | |
1501 | } | |
1502 | ||
1503 | ret = get_event_type(content); | |
1504 | free(content); | |
1505 | if (ret < 0) { | |
1506 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1507 | goto end; | |
1508 | } | |
1509 | ||
1510 | event.type = ret; | |
1511 | } else if (!strcmp((const char *) node->name, | |
1512 | config_element_loglevel_type)) { | |
1513 | xmlChar *content = xmlNodeGetContent(node); | |
1514 | ||
1515 | /* loglevel_type */ | |
1516 | if (!content) { | |
1517 | ret = -LTTNG_ERR_NOMEM; | |
1518 | goto end; | |
1519 | } | |
1520 | ||
1521 | ret = get_loglevel_type(content); | |
1522 | free(content); | |
1523 | if (ret < 0) { | |
1524 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1525 | goto end; | |
1526 | } | |
1527 | ||
1528 | event.loglevel_type = ret; | |
1529 | } else if (!strcmp((const char *) node->name, | |
1530 | config_element_loglevel)) { | |
1531 | xmlChar *content; | |
1532 | int64_t loglevel = 0; | |
1533 | ||
1534 | /* loglevel */ | |
1535 | content = xmlNodeGetContent(node); | |
1536 | if (!content) { | |
1537 | ret = -LTTNG_ERR_NOMEM; | |
1538 | goto end; | |
1539 | } | |
1540 | ||
1541 | ret = parse_int(content, &loglevel); | |
1542 | free(content); | |
1543 | if (ret) { | |
1544 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1545 | goto end; | |
1546 | } | |
1547 | ||
1548 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1549 | WARN("loglevel out of range."); | |
1550 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1551 | goto end; | |
1552 | } | |
1553 | ||
1554 | event.loglevel = loglevel; | |
1555 | } else if (!strcmp((const char *) node->name, | |
1556 | config_element_filter)) { | |
1557 | xmlChar *content = | |
1558 | xmlNodeGetContent(node); | |
1559 | ||
1560 | /* filter */ | |
1561 | if (!content) { | |
1562 | ret = -LTTNG_ERR_NOMEM; | |
1563 | goto end; | |
1564 | } | |
1565 | ||
1566 | filter_expression = strdup((char *) content); | |
1567 | free(content); | |
1568 | if (!filter_expression) { | |
1569 | ret = -LTTNG_ERR_NOMEM; | |
1570 | goto end; | |
1571 | } | |
1572 | } else if (!strcmp((const char *) node->name, | |
1573 | config_element_exclusions)) { | |
1574 | xmlNodePtr exclusion_node; | |
1575 | int exclusion_index = 0; | |
1576 | ||
1577 | /* exclusions */ | |
1578 | if (exclusions) { | |
1579 | /* | |
1580 | * Exclusions has already been initialized, | |
1581 | * invalid file. | |
1582 | */ | |
1583 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1584 | goto end; | |
1585 | } | |
1586 | ||
1587 | exclusion_count = xmlChildElementCount(node); | |
1588 | if (!exclusion_count) { | |
1589 | continue; | |
1590 | } | |
1591 | ||
1592 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1593 | if (!exclusions) { | |
1594 | exclusion_count = 0; | |
1595 | ret = -LTTNG_ERR_NOMEM; | |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1600 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1601 | xmlChar *content = | |
1602 | xmlNodeGetContent(exclusion_node); | |
1603 | ||
1604 | if (!content) { | |
1605 | ret = -LTTNG_ERR_NOMEM; | |
1606 | goto end; | |
1607 | } | |
1608 | ||
1609 | exclusions[exclusion_index] = strdup((const char *) content); | |
1610 | free(content); | |
1611 | if (!exclusions[exclusion_index]) { | |
1612 | ret = -LTTNG_ERR_NOMEM; | |
1613 | goto end; | |
1614 | } | |
1615 | exclusion_index++; | |
1616 | } | |
1617 | ||
1618 | event.exclusion = 1; | |
1619 | } else if (!strcmp((const char *) node->name, | |
1620 | config_element_attributes)) { | |
1621 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1622 | ||
1623 | /* attributes */ | |
1624 | if (!attribute_node) { | |
1625 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1626 | goto end; | |
1627 | } | |
1628 | ||
1629 | if (!strcmp((const char *) node->name, | |
1630 | config_element_probe_attributes)) { | |
1631 | xmlNodePtr probe_attribute_node; | |
1632 | ||
1633 | /* probe_attributes */ | |
1634 | for (probe_attribute_node = | |
1635 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1636 | probe_attribute_node = xmlNextElementSibling( | |
1637 | probe_attribute_node)) { | |
1638 | ||
1639 | ret = process_probe_attribute_node(probe_attribute_node, | |
1640 | &event.attr.probe); | |
1641 | if (ret) { | |
1642 | goto end; | |
1643 | } | |
1644 | } | |
1645 | } else { | |
1646 | size_t sym_len; | |
1647 | xmlChar *content; | |
1648 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1649 | ||
1650 | /* function_attributes */ | |
1651 | content = xmlNodeGetContent(symbol_node); | |
1652 | if (!content) { | |
1653 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1654 | goto end; | |
1655 | } | |
1656 | ||
1657 | sym_len = strlen((char *) content); | |
1658 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1659 | WARN("Function name too long."); | |
1660 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1661 | free(content); | |
1662 | goto end; | |
1663 | } | |
1664 | ||
1665 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1666 | sym_len); | |
1667 | free(content); | |
1668 | } | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1673 | filter_expression, exclusion_count, exclusions); | |
065321e9 JG |
1674 | if (ret) { |
1675 | goto end; | |
1676 | } | |
1677 | ||
1678 | if (!event.enabled) { | |
1679 | /* | |
1680 | * Note that we should use lttng_disable_event_ext() (2.6+) to | |
1681 | * eliminate the risk of clashing on events of the same | |
1682 | * name (with different event types and loglevels). | |
1683 | * | |
1684 | * Unfortunately, lttng_disable_event_ext() only performs a | |
1685 | * match on the name and event type and errors out if any other | |
1686 | * event attribute is not set to its default value. | |
1687 | * | |
1688 | * This will disable all events that match this name. | |
1689 | */ | |
1690 | ret = lttng_disable_event(handle, event.name, channel_name); | |
1691 | } | |
dcf266c0 JG |
1692 | end: |
1693 | for (i = 0; i < exclusion_count; i++) { | |
1694 | free(exclusions[i]); | |
1695 | } | |
1696 | ||
1697 | free(exclusions); | |
1698 | free(filter_expression); | |
1699 | return ret; | |
1700 | } | |
1701 | ||
1702 | static | |
1703 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1704 | const char *channel_name) | |
1705 | { | |
1706 | int ret = 0; | |
1707 | xmlNodePtr node; | |
1708 | ||
1709 | assert(events_node); | |
1710 | assert(handle); | |
1711 | assert(channel_name); | |
1712 | ||
1713 | for (node = xmlFirstElementChild(events_node); node; | |
1714 | node = xmlNextElementSibling(node)) { | |
1715 | ret = process_event_node(node, handle, channel_name); | |
1716 | if (ret) { | |
1717 | goto end; | |
1718 | } | |
1719 | } | |
1720 | end: | |
1721 | return ret; | |
1722 | } | |
1723 | ||
1724 | static | |
1725 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1726 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1727 | xmlNodePtr *events_node) | |
1728 | { | |
1729 | int ret; | |
1730 | ||
1731 | assert(attr_node); | |
1732 | assert(channel); | |
1733 | assert(contexts_node); | |
1734 | assert(events_node); | |
1735 | ||
1736 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1737 | xmlChar *content; | |
1738 | size_t name_len; | |
1739 | ||
1740 | /* name */ | |
1741 | content = xmlNodeGetContent(attr_node); | |
1742 | if (!content) { | |
1743 | ret = -LTTNG_ERR_NOMEM; | |
1744 | goto end; | |
1745 | } | |
1746 | ||
1747 | name_len = strlen((char *) content); | |
1748 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1749 | WARN("Channel name too long."); | |
1750 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1751 | free(content); | |
1752 | goto end; | |
1753 | } | |
1754 | ||
1755 | strncpy(channel->name, (const char *) content, name_len); | |
1756 | free(content); | |
1757 | } else if (!strcmp((const char *) attr_node->name, | |
1758 | config_element_enabled)) { | |
1759 | xmlChar *content; | |
1760 | int enabled; | |
1761 | ||
1762 | /* enabled */ | |
1763 | content = xmlNodeGetContent(attr_node); | |
1764 | if (!content) { | |
1765 | ret = -LTTNG_ERR_NOMEM; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | ret = parse_bool(content, &enabled); | |
1770 | free(content); | |
1771 | if (ret) { | |
1772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
1776 | channel->enabled = enabled; | |
1777 | } else if (!strcmp((const char *) attr_node->name, | |
1778 | config_element_overwrite_mode)) { | |
1779 | xmlChar *content; | |
1780 | ||
1781 | /* overwrite_mode */ | |
1782 | content = xmlNodeGetContent(attr_node); | |
1783 | if (!content) { | |
1784 | ret = -LTTNG_ERR_NOMEM; | |
1785 | goto end; | |
1786 | } | |
1787 | ||
1788 | ret = get_overwrite_mode(content); | |
1789 | free(content); | |
1790 | if (ret < 0) { | |
1791 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1792 | goto end; | |
1793 | } | |
1794 | ||
1795 | channel->attr.overwrite = ret; | |
1796 | } else if (!strcmp((const char *) attr_node->name, | |
1797 | config_element_subbuf_size)) { | |
1798 | xmlChar *content; | |
1799 | ||
1800 | /* subbuffer_size */ | |
1801 | content = xmlNodeGetContent(attr_node); | |
1802 | if (!content) { | |
1803 | ret = -LTTNG_ERR_NOMEM; | |
1804 | goto end; | |
1805 | } | |
1806 | ||
1807 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1808 | free(content); | |
1809 | if (ret) { | |
1810 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1811 | goto end; | |
1812 | } | |
1813 | } else if (!strcmp((const char *) attr_node->name, | |
1814 | config_element_num_subbuf)) { | |
1815 | xmlChar *content; | |
1816 | ||
1817 | /* subbuffer_count */ | |
1818 | content = xmlNodeGetContent(attr_node); | |
1819 | if (!content) { | |
1820 | ret = -LTTNG_ERR_NOMEM; | |
1821 | goto end; | |
1822 | } | |
1823 | ||
1824 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1825 | free(content); | |
1826 | if (ret) { | |
1827 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1828 | goto end; | |
1829 | } | |
1830 | } else if (!strcmp((const char *) attr_node->name, | |
1831 | config_element_switch_timer_interval)) { | |
1832 | xmlChar *content; | |
1833 | uint64_t switch_timer_interval = 0; | |
1834 | ||
1835 | /* switch_timer_interval */ | |
1836 | content = xmlNodeGetContent(attr_node); | |
1837 | if (!content) { | |
1838 | ret = -LTTNG_ERR_NOMEM; | |
1839 | goto end; | |
1840 | } | |
1841 | ||
1842 | ret = parse_uint(content, &switch_timer_interval); | |
1843 | free(content); | |
1844 | if (ret) { | |
1845 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1846 | goto end; | |
1847 | } | |
1848 | ||
1849 | if (switch_timer_interval > UINT_MAX) { | |
1850 | WARN("switch_timer_interval out of range."); | |
1851 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1852 | goto end; | |
1853 | } | |
1854 | ||
1855 | channel->attr.switch_timer_interval = | |
1856 | switch_timer_interval; | |
1857 | } else if (!strcmp((const char *) attr_node->name, | |
1858 | config_element_read_timer_interval)) { | |
1859 | xmlChar *content; | |
1860 | uint64_t read_timer_interval = 0; | |
1861 | ||
1862 | /* read_timer_interval */ | |
1863 | content = xmlNodeGetContent(attr_node); | |
1864 | if (!content) { | |
1865 | ret = -LTTNG_ERR_NOMEM; | |
1866 | goto end; | |
1867 | } | |
1868 | ||
1869 | ret = parse_uint(content, &read_timer_interval); | |
1870 | free(content); | |
1871 | if (ret) { | |
1872 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1873 | goto end; | |
1874 | } | |
1875 | ||
1876 | if (read_timer_interval > UINT_MAX) { | |
1877 | WARN("read_timer_interval out of range."); | |
1878 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1879 | goto end; | |
1880 | } | |
1881 | ||
1882 | channel->attr.read_timer_interval = | |
1883 | read_timer_interval; | |
1884 | } else if (!strcmp((const char *) attr_node->name, | |
1885 | config_element_output_type)) { | |
1886 | xmlChar *content; | |
1887 | ||
1888 | /* output_type */ | |
1889 | content = xmlNodeGetContent(attr_node); | |
1890 | if (!content) { | |
1891 | ret = -LTTNG_ERR_NOMEM; | |
1892 | goto end; | |
1893 | } | |
1894 | ||
1895 | ret = get_output_type(content); | |
1896 | free(content); | |
1897 | if (ret < 0) { | |
1898 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1899 | goto end; | |
1900 | } | |
1901 | ||
1902 | channel->attr.output = ret; | |
1903 | } else if (!strcmp((const char *) attr_node->name, | |
1904 | config_element_tracefile_size)) { | |
1905 | xmlChar *content; | |
1906 | ||
1907 | /* tracefile_size */ | |
1908 | content = xmlNodeGetContent(attr_node); | |
1909 | if (!content) { | |
1910 | ret = -LTTNG_ERR_NOMEM; | |
1911 | goto end; | |
1912 | } | |
1913 | ||
1914 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1915 | free(content); | |
1916 | if (ret) { | |
1917 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1918 | goto end; | |
1919 | } | |
1920 | } else if (!strcmp((const char *) attr_node->name, | |
1921 | config_element_tracefile_count)) { | |
1922 | xmlChar *content; | |
1923 | ||
1924 | /* tracefile_count */ | |
1925 | content = xmlNodeGetContent(attr_node); | |
1926 | if (!content) { | |
1927 | ret = -LTTNG_ERR_NOMEM; | |
1928 | goto end; | |
1929 | } | |
1930 | ||
1931 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1932 | free(content); | |
1933 | if (ret) { | |
1934 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1935 | goto end; | |
1936 | } | |
1937 | } else if (!strcmp((const char *) attr_node->name, | |
1938 | config_element_live_timer_interval)) { | |
1939 | xmlChar *content; | |
1940 | uint64_t live_timer_interval = 0; | |
1941 | ||
1942 | /* live_timer_interval */ | |
1943 | content = xmlNodeGetContent(attr_node); | |
1944 | if (!content) { | |
1945 | ret = -LTTNG_ERR_NOMEM; | |
1946 | goto end; | |
1947 | } | |
1948 | ||
1949 | ret = parse_uint(content, &live_timer_interval); | |
1950 | free(content); | |
1951 | if (ret) { | |
1952 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1953 | goto end; | |
1954 | } | |
1955 | ||
1956 | if (live_timer_interval > UINT_MAX) { | |
1957 | WARN("live_timer_interval out of range."); | |
1958 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1959 | goto end; | |
1960 | } | |
1961 | ||
1962 | channel->attr.live_timer_interval = | |
1963 | live_timer_interval; | |
1964 | } else if (!strcmp((const char *) attr_node->name, | |
1965 | config_element_events)) { | |
1966 | /* events */ | |
1967 | *events_node = attr_node; | |
1968 | } else { | |
1969 | /* contexts */ | |
1970 | *contexts_node = attr_node; | |
1971 | } | |
1972 | ret = 0; | |
1973 | end: | |
1974 | return ret; | |
1975 | } | |
1976 | ||
1977 | static | |
1978 | int process_context_node(xmlNodePtr context_node, | |
1979 | struct lttng_handle *handle, const char *channel_name) | |
1980 | { | |
1981 | int ret; | |
1982 | struct lttng_event_context context; | |
1983 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
1984 | ||
1985 | assert(handle); | |
1986 | assert(channel_name); | |
1987 | ||
1988 | if (!context_child_node) { | |
1989 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1990 | goto end; | |
1991 | } | |
1992 | ||
1993 | memset(&context, 0, sizeof(context)); | |
1994 | ||
1995 | if (!strcmp((const char *) context_child_node->name, | |
1996 | config_element_type)) { | |
1997 | /* type */ | |
1998 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 1999 | |
dcf266c0 JG |
2000 | if (!content) { |
2001 | ret = -LTTNG_ERR_NOMEM; | |
2002 | goto end; | |
2003 | } | |
2004 | ||
2005 | ret = get_context_type(content); | |
2006 | free(content); | |
2007 | if (ret < 0) { | |
2008 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2009 | goto end; | |
2010 | } | |
2011 | ||
2012 | context.ctx = ret; | |
045fc617 JG |
2013 | } else if (!strcmp((const char *) context_child_node->name, |
2014 | config_element_context_perf)) { | |
2015 | /* perf */ | |
dcf266c0 JG |
2016 | xmlNodePtr perf_attr_node; |
2017 | ||
14ce5bd8 JG |
2018 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2019 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2020 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2021 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2022 | perf_attr_node; perf_attr_node = | |
2023 | xmlNextElementSibling(perf_attr_node)) { | |
2024 | if (!strcmp((const char *) perf_attr_node->name, | |
2025 | config_element_type)) { | |
2026 | xmlChar *content; | |
2027 | uint64_t type = 0; | |
2028 | ||
2029 | /* type */ | |
2030 | content = xmlNodeGetContent(perf_attr_node); | |
2031 | if (!content) { | |
2032 | ret = -LTTNG_ERR_NOMEM; | |
2033 | goto end; | |
2034 | } | |
2035 | ||
2036 | ret = parse_uint(content, &type); | |
2037 | free(content); | |
2038 | if (ret) { | |
2039 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2040 | goto end; | |
2041 | } | |
2042 | ||
2043 | if (type > UINT32_MAX) { | |
2044 | WARN("perf context type out of range."); | |
2045 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2046 | goto end; | |
2047 | } | |
2048 | ||
2049 | context.u.perf_counter.type = type; | |
2050 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2051 | config_element_config)) { | |
2052 | xmlChar *content; | |
2053 | uint64_t config = 0; | |
2054 | ||
2055 | /* config */ | |
2056 | content = xmlNodeGetContent(perf_attr_node); | |
2057 | if (!content) { | |
2058 | ret = -LTTNG_ERR_NOMEM; | |
2059 | goto end; | |
2060 | } | |
2061 | ||
2062 | ret = parse_uint(content, &config); | |
2063 | free(content); | |
2064 | if (ret) { | |
2065 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2066 | goto end; | |
2067 | } | |
2068 | ||
2069 | context.u.perf_counter.config = config; | |
2070 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2071 | config_element_name)) { | |
2072 | xmlChar *content; | |
2073 | size_t name_len; | |
2074 | ||
2075 | /* name */ | |
2076 | content = xmlNodeGetContent(perf_attr_node); | |
2077 | if (!content) { | |
2078 | ret = -LTTNG_ERR_NOMEM; | |
2079 | goto end; | |
2080 | } | |
2081 | ||
2082 | name_len = strlen((char *) content); | |
2083 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2084 | WARN("perf context name too long."); | |
2085 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2086 | free(content); | |
2087 | goto end; | |
2088 | } | |
2089 | ||
2090 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2091 | name_len); | |
2092 | free(content); | |
2093 | } | |
2094 | } | |
045fc617 JG |
2095 | } else if (!strcmp((const char *) context_child_node->name, |
2096 | config_element_context_app)) { | |
2097 | /* application context */ | |
2098 | xmlNodePtr app_ctx_node; | |
2099 | ||
2100 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2101 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2102 | app_ctx_node; app_ctx_node = | |
2103 | xmlNextElementSibling(app_ctx_node)) { | |
2104 | xmlChar *content; | |
2105 | char **target = strcmp( | |
2106 | (const char *) app_ctx_node->name, | |
2107 | config_element_context_app_provider_name) == 0 ? | |
2108 | &context.u.app_ctx.provider_name : | |
2109 | &context.u.app_ctx.ctx_name; | |
2110 | ||
2111 | content = xmlNodeGetContent(app_ctx_node); | |
2112 | if (!content) { | |
2113 | ret = -LTTNG_ERR_NOMEM; | |
2114 | goto end; | |
2115 | } | |
2116 | ||
2117 | *target = (char *) content; | |
2118 | } | |
2119 | } else { | |
2120 | /* Unrecognized context type */ | |
2121 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2122 | goto end; | |
dcf266c0 JG |
2123 | } |
2124 | ||
2125 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2126 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2127 | free(context.u.app_ctx.provider_name); | |
2128 | free(context.u.app_ctx.ctx_name); | |
2129 | } | |
dcf266c0 JG |
2130 | end: |
2131 | return ret; | |
2132 | } | |
2133 | ||
2134 | static | |
2135 | int process_contexts_node(xmlNodePtr contexts_node, | |
2136 | struct lttng_handle *handle, const char *channel_name) | |
2137 | { | |
2138 | int ret = 0; | |
2139 | xmlNodePtr context_node; | |
2140 | ||
2141 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2142 | context_node = xmlNextElementSibling(context_node)) { | |
2143 | ret = process_context_node(context_node, handle, channel_name); | |
2144 | if (ret) { | |
2145 | goto end; | |
2146 | } | |
2147 | } | |
2148 | end: | |
2149 | return ret; | |
2150 | } | |
2151 | ||
847a5916 JR |
2152 | static |
2153 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2154 | struct lttng_handle *handle) | |
2155 | { | |
dd49e13f | 2156 | int ret = 0, child; |
847a5916 JR |
2157 | xmlNodePtr targets_node = NULL; |
2158 | xmlNodePtr node; | |
2159 | ||
2160 | assert(handle); | |
2161 | assert(pid_tracker_node); | |
2162 | /* get the targets node */ | |
2163 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2164 | node = xmlNextElementSibling(node)) { | |
2165 | if (!strcmp((const char *) node->name, | |
2166 | config_element_targets)) { | |
2167 | targets_node = node; | |
2168 | break; | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | if (!targets_node) { | |
2173 | ret = LTTNG_ERR_INVALID; | |
2174 | goto end; | |
2175 | } | |
2176 | ||
2177 | /* Go through all pid_target node */ | |
2178 | child = xmlChildElementCount(targets_node); | |
2179 | if (child == 0) { | |
2180 | /* The session is explicitly set to target nothing. */ | |
2181 | ret = lttng_untrack_pid(handle, -1); | |
2182 | if (ret) { | |
2183 | goto end; | |
2184 | } | |
2185 | } | |
2186 | for (node = xmlFirstElementChild(targets_node); node; | |
2187 | node = xmlNextElementSibling(node)) { | |
2188 | xmlNodePtr pid_target_node = node; | |
2189 | ||
2190 | /* get pid node and track it */ | |
2191 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2192 | node = xmlNextElementSibling(node)) { | |
2193 | if (!strcmp((const char *) node->name, | |
2194 | config_element_pid)) { | |
2195 | int64_t pid; | |
2196 | xmlChar *content = NULL; | |
2197 | ||
2198 | content = xmlNodeGetContent(node); | |
2199 | if (!content) { | |
2200 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2201 | goto end; | |
2202 | } | |
2203 | ||
2204 | ret = parse_int(content, &pid); | |
2205 | free(content); | |
2206 | if (ret) { | |
2207 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2208 | goto end; | |
2209 | } | |
2210 | ||
2211 | ret = lttng_track_pid(handle, (int) pid); | |
2212 | if (ret) { | |
2213 | goto end; | |
2214 | } | |
2215 | } | |
2216 | } | |
2217 | node = pid_target_node; | |
2218 | } | |
2219 | ||
2220 | end: | |
2221 | return ret; | |
2222 | } | |
2223 | ||
2224 | ||
dcf266c0 JG |
2225 | static |
2226 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2227 | { | |
2228 | int ret; | |
2229 | struct lttng_domain domain = { 0 }; | |
2230 | struct lttng_handle *handle = NULL; | |
2231 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2232 | xmlNodePtr trackers_node = NULL; |
2233 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2234 | xmlNodePtr node; |
2235 | ||
2236 | assert(session_name); | |
2237 | ||
2238 | ret = init_domain(domain_node, &domain); | |
2239 | if (ret) { | |
2240 | goto end; | |
2241 | } | |
2242 | ||
2243 | handle = lttng_create_handle(session_name, &domain); | |
2244 | if (!handle) { | |
2245 | ret = -LTTNG_ERR_NOMEM; | |
2246 | goto end; | |
2247 | } | |
2248 | ||
2249 | /* get the channels node */ | |
2250 | for (node = xmlFirstElementChild(domain_node); node; | |
2251 | node = xmlNextElementSibling(node)) { | |
2252 | if (!strcmp((const char *) node->name, | |
2253 | config_element_channels)) { | |
2254 | channels_node = node; | |
2255 | break; | |
2256 | } | |
2257 | } | |
2258 | ||
2259 | if (!channels_node) { | |
2260 | goto end; | |
2261 | } | |
2262 | ||
2263 | /* create all channels */ | |
2264 | for (node = xmlFirstElementChild(channels_node); node; | |
2265 | node = xmlNextElementSibling(node)) { | |
2266 | struct lttng_channel channel; | |
2267 | xmlNodePtr contexts_node = NULL; | |
2268 | xmlNodePtr events_node = NULL; | |
2269 | xmlNodePtr channel_attr_node; | |
2270 | ||
2271 | memset(&channel, 0, sizeof(channel)); | |
2272 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2273 | ||
2274 | for (channel_attr_node = xmlFirstElementChild(node); | |
2275 | channel_attr_node; channel_attr_node = | |
2276 | xmlNextElementSibling(channel_attr_node)) { | |
2277 | ret = process_channel_attr_node(channel_attr_node, | |
2278 | &channel, &contexts_node, &events_node); | |
2279 | if (ret) { | |
2280 | goto end; | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | ret = lttng_enable_channel(handle, &channel); | |
2285 | if (ret < 0) { | |
2286 | goto end; | |
2287 | } | |
2288 | ||
2289 | ret = process_events_node(events_node, handle, channel.name); | |
2290 | if (ret) { | |
2291 | goto end; | |
2292 | } | |
2293 | ||
2294 | ret = process_contexts_node(contexts_node, handle, | |
2295 | channel.name); | |
2296 | if (ret) { | |
2297 | goto end; | |
2298 | } | |
2299 | } | |
847a5916 JR |
2300 | |
2301 | /* get the trackers node */ | |
2302 | for (node = xmlFirstElementChild(domain_node); node; | |
2303 | node = xmlNextElementSibling(node)) { | |
2304 | if (!strcmp((const char *) node->name, | |
2305 | config_element_trackers)) { | |
2306 | trackers_node = node; | |
2307 | break; | |
2308 | } | |
2309 | } | |
2310 | ||
2311 | if (!trackers_node) { | |
2312 | goto end; | |
2313 | } | |
2314 | ||
2315 | for (node = xmlFirstElementChild(trackers_node); node; | |
2316 | node = xmlNextElementSibling(node)) { | |
2317 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2318 | pid_tracker_node = node; | |
2319 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2320 | if (ret) { | |
2321 | goto end; | |
2322 | } | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | if (!pid_tracker_node) { | |
2327 | lttng_track_pid(handle, -1); | |
2328 | } | |
2329 | ||
dcf266c0 JG |
2330 | end: |
2331 | lttng_destroy_handle(handle); | |
2332 | return ret; | |
2333 | } | |
2334 | ||
2335 | static | |
2336 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2337 | int override) | |
2338 | { | |
2339 | int ret, started = -1, snapshot_mode = -1; | |
2340 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2341 | xmlChar *name = NULL; |
9e7c9f56 | 2342 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2343 | xmlNodePtr domains_node = NULL; |
2344 | xmlNodePtr output_node = NULL; | |
2345 | xmlNodePtr node; | |
2346 | struct lttng_domain *kernel_domain = NULL; | |
2347 | struct lttng_domain *ust_domain = NULL; | |
2348 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2349 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2350 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2351 | |
2352 | for (node = xmlFirstElementChild(session_node); node; | |
2353 | node = xmlNextElementSibling(node)) { | |
2354 | if (!name && !strcmp((const char *) node->name, | |
2355 | config_element_name)) { | |
2356 | /* name */ | |
2357 | xmlChar *node_content = xmlNodeGetContent(node); | |
2358 | if (!node_content) { | |
2359 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2360 | goto error; |
dcf266c0 JG |
2361 | } |
2362 | ||
d324faf7 | 2363 | name = node_content; |
dcf266c0 JG |
2364 | } else if (!domains_node && !strcmp((const char *) node->name, |
2365 | config_element_domains)) { | |
2366 | /* domains */ | |
2367 | domains_node = node; | |
2368 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2369 | config_element_started)) { | |
2370 | /* started */ | |
2371 | xmlChar *node_content = xmlNodeGetContent(node); | |
2372 | if (!node_content) { | |
2373 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2374 | goto error; |
dcf266c0 JG |
2375 | } |
2376 | ||
2377 | ret = parse_bool(node_content, &started); | |
2378 | free(node_content); | |
2379 | if (ret) { | |
2380 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2381 | goto error; |
dcf266c0 JG |
2382 | } |
2383 | } else if (!output_node && !strcmp((const char *) node->name, | |
2384 | config_element_output)) { | |
2385 | /* output */ | |
2386 | output_node = node; | |
9e7c9f56 JR |
2387 | } else if (!shm_path && !strcmp((const char *) node->name, |
2388 | config_element_shared_memory_path)) { | |
2389 | /* shared memory path */ | |
2390 | xmlChar *node_content = xmlNodeGetContent(node); | |
2391 | if (!node_content) { | |
2392 | ret = -LTTNG_ERR_NOMEM; | |
2393 | goto error; | |
2394 | } | |
2395 | ||
2396 | shm_path = node_content; | |
dcf266c0 JG |
2397 | } else { |
2398 | /* attributes, snapshot_mode or live_timer_interval */ | |
2399 | xmlNodePtr attributes_child = | |
2400 | xmlFirstElementChild(node); | |
2401 | ||
2402 | if (!strcmp((const char *) attributes_child->name, | |
2403 | config_element_snapshot_mode)) { | |
2404 | /* snapshot_mode */ | |
2405 | xmlChar *snapshot_mode_content = | |
2406 | xmlNodeGetContent(attributes_child); | |
2407 | if (!snapshot_mode_content) { | |
2408 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2409 | goto error; |
dcf266c0 JG |
2410 | } |
2411 | ||
2412 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2413 | free(snapshot_mode_content); | |
2414 | if (ret) { | |
2415 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2416 | goto error; |
dcf266c0 JG |
2417 | } |
2418 | } else { | |
2419 | /* live_timer_interval */ | |
2420 | xmlChar *timer_interval_content = | |
2421 | xmlNodeGetContent(attributes_child); | |
2422 | if (!timer_interval_content) { | |
2423 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2424 | goto error; |
dcf266c0 JG |
2425 | } |
2426 | ||
2427 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2428 | free(timer_interval_content); | |
2429 | if (ret) { | |
2430 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2431 | goto error; |
dcf266c0 JG |
2432 | } |
2433 | } | |
2434 | } | |
2435 | } | |
2436 | ||
2437 | if (!name) { | |
2438 | /* Mandatory attribute, as defined in the session XSD */ | |
2439 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2440 | goto error; |
dcf266c0 JG |
2441 | } |
2442 | ||
d324faf7 | 2443 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2444 | /* This is not the session we are looking for */ |
c2da8cde DG |
2445 | ret = -LTTNG_ERR_NO_SESSION; |
2446 | goto error; | |
dcf266c0 JG |
2447 | } |
2448 | ||
2449 | /* Init domains to create the session handles */ | |
2450 | for (node = xmlFirstElementChild(domains_node); node; | |
2451 | node = xmlNextElementSibling(node)) { | |
2452 | struct lttng_domain *domain; | |
2453 | ||
2454 | domain = zmalloc(sizeof(*domain)); | |
2455 | if (!domain) { | |
2456 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2457 | goto error; |
dcf266c0 JG |
2458 | } |
2459 | ||
2460 | ret = init_domain(node, domain); | |
2461 | if (ret) { | |
2462 | goto domain_init_error; | |
2463 | } | |
2464 | ||
2465 | switch (domain->type) { | |
2466 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2467 | if (kernel_domain) { |
2468 | /* Same domain seen twice, invalid! */ | |
2469 | goto domain_init_error; | |
2470 | } | |
dcf266c0 JG |
2471 | kernel_domain = domain; |
2472 | break; | |
2473 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2474 | if (ust_domain) { |
2475 | /* Same domain seen twice, invalid! */ | |
2476 | goto domain_init_error; | |
2477 | } | |
dcf266c0 JG |
2478 | ust_domain = domain; |
2479 | break; | |
2480 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2481 | if (jul_domain) { |
2482 | /* Same domain seen twice, invalid! */ | |
2483 | goto domain_init_error; | |
2484 | } | |
dcf266c0 JG |
2485 | jul_domain = domain; |
2486 | break; | |
5cdb6027 DG |
2487 | case LTTNG_DOMAIN_LOG4J: |
2488 | if (log4j_domain) { | |
2489 | /* Same domain seen twice, invalid! */ | |
2490 | goto domain_init_error; | |
2491 | } | |
2492 | log4j_domain = domain; | |
2493 | break; | |
0e115563 DG |
2494 | case LTTNG_DOMAIN_PYTHON: |
2495 | if (python_domain) { | |
2496 | /* Same domain seen twice, invalid! */ | |
2497 | goto domain_init_error; | |
2498 | } | |
2499 | python_domain = domain; | |
2500 | break; | |
dcf266c0 JG |
2501 | default: |
2502 | WARN("Invalid domain type"); | |
2503 | goto domain_init_error; | |
2504 | } | |
2505 | continue; | |
2506 | domain_init_error: | |
2507 | free(domain); | |
2508 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2509 | goto error; |
dcf266c0 JG |
2510 | } |
2511 | ||
2512 | if (override) { | |
2513 | /* Destroy session if it exists */ | |
d324faf7 | 2514 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2515 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2516 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2517 | goto error; |
dcf266c0 JG |
2518 | } |
2519 | } | |
2520 | ||
2521 | /* Create session type depending on output type */ | |
2522 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2523 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2524 | } else if (live_timer_interval && |
2525 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2526 | ret = create_session((const char *) name, kernel_domain, |
2527 | ust_domain, jul_domain, log4j_domain, | |
2528 | output_node, live_timer_interval); | |
dcf266c0 JG |
2529 | } else { |
2530 | /* regular session */ | |
d324faf7 JG |
2531 | ret = create_session((const char *) name, kernel_domain, |
2532 | ust_domain, jul_domain, log4j_domain, | |
2533 | output_node, UINT64_MAX); | |
dcf266c0 | 2534 | } |
dcf266c0 | 2535 | if (ret) { |
c2da8cde | 2536 | goto error; |
dcf266c0 JG |
2537 | } |
2538 | ||
9e7c9f56 JR |
2539 | if (shm_path) { |
2540 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2541 | (const char *) shm_path); |
9e7c9f56 JR |
2542 | if (ret) { |
2543 | goto error; | |
2544 | } | |
2545 | } | |
2546 | ||
dcf266c0 JG |
2547 | for (node = xmlFirstElementChild(domains_node); node; |
2548 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2549 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2550 | if (ret) { |
2551 | goto end; | |
2552 | } | |
2553 | } | |
2554 | ||
2555 | if (started) { | |
d324faf7 | 2556 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2557 | if (ret) { |
2558 | goto end; | |
2559 | } | |
2560 | } | |
c2da8cde | 2561 | |
dcf266c0 | 2562 | end: |
b2579dc1 | 2563 | if (ret < 0) { |
d324faf7 JG |
2564 | ERR("Failed to load session %s: %s", (const char *) name, |
2565 | lttng_strerror(ret)); | |
2566 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2567 | } |
2568 | ||
c2da8cde | 2569 | error: |
dcf266c0 JG |
2570 | free(kernel_domain); |
2571 | free(ust_domain); | |
2572 | free(jul_domain); | |
5cdb6027 | 2573 | free(log4j_domain); |
135a3893 | 2574 | free(python_domain); |
d324faf7 | 2575 | xmlFree(name); |
9e7c9f56 | 2576 | xmlFree(shm_path); |
dcf266c0 JG |
2577 | return ret; |
2578 | } | |
2579 | ||
cf53c06d DG |
2580 | /* |
2581 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2582 | * Return -1 if the path is EPERM. | |
2583 | */ | |
2584 | static int validate_file_read_creds(const char *path) | |
2585 | { | |
2586 | int ret; | |
2587 | ||
2588 | assert(path); | |
2589 | ||
2590 | /* Can we read the file. */ | |
2591 | ret = access(path, R_OK); | |
2592 | if (!ret) { | |
2593 | goto valid; | |
2594 | } | |
2595 | if (errno == EACCES) { | |
2596 | return -1; | |
2597 | } else { | |
2598 | /* Invalid. */ | |
2599 | return 0; | |
2600 | } | |
2601 | valid: | |
2602 | return 1; | |
2603 | } | |
2604 | ||
dcf266c0 JG |
2605 | static |
2606 | int load_session_from_file(const char *path, const char *session_name, | |
2607 | struct session_config_validation_ctx *validation_ctx, int override) | |
2608 | { | |
2609 | int ret, session_found = !session_name; | |
2610 | xmlDocPtr doc = NULL; | |
2611 | xmlNodePtr sessions_node; | |
2612 | xmlNodePtr session_node; | |
dcf266c0 JG |
2613 | |
2614 | assert(path); | |
2615 | assert(validation_ctx); | |
2616 | ||
cf53c06d DG |
2617 | ret = validate_file_read_creds(path); |
2618 | if (ret != 1) { | |
2619 | if (ret == -1) { | |
2620 | ret = -LTTNG_ERR_EPERM; | |
2621 | } else { | |
2622 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2623 | } | |
dcf266c0 JG |
2624 | goto end; |
2625 | } | |
2626 | ||
2627 | doc = xmlParseFile(path); | |
2628 | if (!doc) { | |
2629 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2630 | goto end; | |
2631 | } | |
2632 | ||
2633 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2634 | if (ret) { | |
2635 | ERR("Session configuration file validation failed"); | |
2636 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2637 | goto end; | |
2638 | } | |
2639 | ||
2640 | sessions_node = xmlDocGetRootElement(doc); | |
2641 | if (!sessions_node) { | |
2642 | goto end; | |
2643 | } | |
2644 | ||
2645 | for (session_node = xmlFirstElementChild(sessions_node); | |
2646 | session_node; session_node = | |
2647 | xmlNextElementSibling(session_node)) { | |
2648 | ret = process_session_node(session_node, | |
2649 | session_name, override); | |
2650 | if (session_name && ret == 0) { | |
2651 | /* Target session found and loaded */ | |
2652 | session_found = 1; | |
2653 | break; | |
2654 | } | |
2655 | } | |
2656 | end: | |
2657 | xmlFreeDoc(doc); | |
2658 | if (!ret) { | |
a96bc65d | 2659 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2660 | } |
2661 | return ret; | |
2662 | } | |
2663 | ||
60f70355 JG |
2664 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2665 | static | |
2666 | struct dirent *alloc_dirent(const char *path) | |
2667 | { | |
2668 | size_t len; | |
2669 | long name_max; | |
2670 | struct dirent *entry; | |
2671 | ||
2672 | name_max = pathconf(path, _PC_NAME_MAX); | |
2673 | if (name_max == -1) { | |
2674 | name_max = PATH_MAX; | |
2675 | } | |
2676 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2677 | entry = zmalloc(len); | |
2678 | return entry; | |
2679 | } | |
2680 | ||
dcf266c0 JG |
2681 | static |
2682 | int load_session_from_path(const char *path, const char *session_name, | |
2683 | struct session_config_validation_ctx *validation_ctx, int override) | |
2684 | { | |
2685 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2686 | DIR *directory = NULL; |
2687 | ||
2688 | assert(path); | |
2689 | assert(validation_ctx); | |
2690 | ||
4af16958 DG |
2691 | directory = opendir(path); |
2692 | if (!directory) { | |
11143783 DG |
2693 | switch (errno) { |
2694 | case ENOTDIR: | |
0f0a81b5 DG |
2695 | /* Try the file loading. */ |
2696 | break; | |
11143783 DG |
2697 | case ENOENT: |
2698 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2699 | goto end; | |
2700 | default: | |
0f0a81b5 DG |
2701 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2702 | goto end; | |
4af16958 | 2703 | } |
dcf266c0 | 2704 | } |
4af16958 | 2705 | if (directory) { |
dcf266c0 JG |
2706 | struct dirent *entry; |
2707 | struct dirent *result; | |
2708 | char *file_path = NULL; | |
2709 | size_t path_len = strlen(path); | |
2710 | ||
2711 | if (path_len >= PATH_MAX) { | |
2712 | ret = -LTTNG_ERR_INVALID; | |
2713 | goto end; | |
2714 | } | |
2715 | ||
60f70355 | 2716 | entry = alloc_dirent(path); |
dcf266c0 JG |
2717 | if (!entry) { |
2718 | ret = -LTTNG_ERR_NOMEM; | |
2719 | goto end; | |
2720 | } | |
2721 | ||
dcf266c0 JG |
2722 | file_path = zmalloc(PATH_MAX); |
2723 | if (!file_path) { | |
2724 | ret = -LTTNG_ERR_NOMEM; | |
2725 | free(entry); | |
2726 | goto end; | |
2727 | } | |
2728 | ||
2729 | strncpy(file_path, path, path_len); | |
2730 | if (file_path[path_len - 1] != '/') { | |
2731 | file_path[path_len++] = '/'; | |
2732 | } | |
2733 | ||
4af16958 | 2734 | ret = 0; |
dcf266c0 JG |
2735 | /* Search for *.lttng files */ |
2736 | while (!readdir_r(directory, entry, &result) && result) { | |
2737 | size_t file_name_len = strlen(result->d_name); | |
2738 | ||
2739 | if (file_name_len <= | |
2740 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2741 | continue; | |
2742 | } | |
2743 | ||
431f702e | 2744 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2745 | continue; |
2746 | } | |
2747 | ||
2748 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2749 | result->d_name + file_name_len - sizeof( | |
2750 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2751 | continue; | |
2752 | } | |
2753 | ||
2754 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2755 | file_path[path_len + file_name_len] = '\0'; | |
2756 | ||
2757 | ret = load_session_from_file(file_path, session_name, | |
2758 | validation_ctx, override); | |
2759 | if (session_name && !ret) { | |
2760 | session_found = 1; | |
2761 | break; | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | free(entry); | |
2766 | free(file_path); | |
2767 | } else { | |
2768 | ret = load_session_from_file(path, session_name, | |
2769 | validation_ctx, override); | |
2770 | if (ret) { | |
2771 | goto end; | |
2772 | } else { | |
2773 | session_found = 1; | |
2774 | } | |
2775 | } | |
2776 | ||
2777 | end: | |
2778 | if (directory) { | |
2779 | if (closedir(directory)) { | |
2780 | PERROR("closedir"); | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | if (!session_found) { | |
a96bc65d | 2785 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2786 | } |
2787 | ||
2788 | return ret; | |
2789 | } | |
2790 | ||
ab38c13f DG |
2791 | /* |
2792 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2793 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2794 | */ |
2795 | static int validate_path_creds(const char *path) | |
2796 | { | |
2797 | int ret, uid = getuid(); | |
2798 | struct stat buf; | |
2799 | ||
2800 | assert(path); | |
2801 | ||
cf53c06d | 2802 | if (uid == 0) { |
ab38c13f DG |
2803 | goto valid; |
2804 | } | |
2805 | ||
2806 | ret = stat(path, &buf); | |
2807 | if (ret < 0) { | |
2808 | if (errno != ENOENT) { | |
2809 | PERROR("stat"); | |
2810 | } | |
2811 | ret = -LTTNG_ERR_INVALID; | |
2812 | goto valid; | |
2813 | } | |
2814 | ||
2815 | if (buf.st_uid != uid) { | |
2816 | goto invalid; | |
2817 | } | |
2818 | ||
2819 | valid: | |
ab38c13f | 2820 | return 1; |
cf53c06d DG |
2821 | invalid: |
2822 | return 0; | |
ab38c13f DG |
2823 | } |
2824 | ||
dcf266c0 JG |
2825 | LTTNG_HIDDEN |
2826 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2827 | int override, unsigned int autoload) |
dcf266c0 JG |
2828 | { |
2829 | int ret; | |
cf53c06d | 2830 | const char *path_ptr = NULL; |
dcf266c0 JG |
2831 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2832 | ||
2833 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2834 | if (ret) { | |
2835 | goto end; | |
2836 | } | |
2837 | ||
2838 | if (!path) { | |
ab38c13f DG |
2839 | char *home_path; |
2840 | const char *sys_path; | |
2841 | ||
dcf266c0 | 2842 | /* Try home path */ |
ab38c13f | 2843 | home_path = utils_get_home_dir(); |
dcf266c0 | 2844 | if (home_path) { |
ab38c13f | 2845 | char path[PATH_MAX]; |
dcf266c0 | 2846 | |
d4fcf703 DG |
2847 | /* |
2848 | * Try user session configuration path. Ignore error here so we can | |
2849 | * continue loading the system wide sessions. | |
2850 | */ | |
ab38c13f DG |
2851 | if (autoload) { |
2852 | ret = snprintf(path, sizeof(path), | |
2853 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2854 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2855 | if (ret < 0) { |
2856 | PERROR("snprintf session autoload home config path"); | |
2857 | goto end; | |
2858 | } | |
2859 | ||
2860 | /* | |
2861 | * Credentials are only validated for the autoload in order to | |
2862 | * avoid any user session daemon to try to load kernel sessions | |
2863 | * automatically and failing all the times. | |
2864 | */ | |
2865 | ret = validate_path_creds(path); | |
2866 | if (ret) { | |
2867 | path_ptr = path; | |
2868 | } | |
ab38c13f DG |
2869 | } else { |
2870 | ret = snprintf(path, sizeof(path), | |
2871 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2872 | if (ret < 0) { |
2873 | PERROR("snprintf session home config path"); | |
2874 | goto end; | |
2875 | } | |
2876 | path_ptr = path; | |
ab38c13f | 2877 | } |
cf53c06d DG |
2878 | if (path_ptr) { |
2879 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2880 | &validation_ctx, override); |
2881 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2882 | goto end; | |
2883 | } | |
2884 | /* | |
2885 | * Continue even if the session was found since we have to try | |
2886 | * the system wide sessions. | |
2887 | */ | |
ab38c13f | 2888 | } |
d4fcf703 | 2889 | } |
ab38c13f | 2890 | |
cf53c06d DG |
2891 | /* Reset path pointer for the system wide dir. */ |
2892 | path_ptr = NULL; | |
2893 | ||
d4fcf703 DG |
2894 | /* Try system wide configuration directory. */ |
2895 | if (autoload) { | |
2896 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2897 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2898 | ret = validate_path_creds(sys_path); |
2899 | if (ret) { | |
2900 | path_ptr = sys_path; | |
2901 | } | |
d4fcf703 | 2902 | } else { |
cf53c06d DG |
2903 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2904 | path_ptr = sys_path; | |
d4fcf703 DG |
2905 | } |
2906 | ||
cf53c06d DG |
2907 | if (path_ptr) { |
2908 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2909 | &validation_ctx, override); |
dcf266c0 JG |
2910 | } |
2911 | } else { | |
2912 | ret = access(path, F_OK); | |
2913 | if (ret < 0) { | |
2914 | PERROR("access"); | |
2915 | switch (errno) { | |
2916 | case ENOENT: | |
2917 | ret = -LTTNG_ERR_INVALID; | |
2918 | WARN("Session configuration path does not exist."); | |
2919 | break; | |
2920 | case EACCES: | |
2921 | ret = -LTTNG_ERR_EPERM; | |
2922 | break; | |
2923 | default: | |
2924 | ret = -LTTNG_ERR_UNK; | |
2925 | break; | |
2926 | } | |
2927 | goto end; | |
2928 | } | |
2929 | ||
2930 | ret = load_session_from_path(path, session_name, | |
2931 | &validation_ctx, override); | |
2932 | } | |
2933 | end: | |
2934 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2935 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2936 | /* | |
2937 | * Don't report an error if no sessions are found when called | |
2938 | * without a session_name or a search path. | |
2939 | */ | |
2940 | ret = 0; | |
2941 | } | |
dcf266c0 JG |
2942 | return ret; |
2943 | } |