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"; | |
7b4aa11d | 112 | const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
113 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
114 | const char * const config_element_consumer_output = "consumer_output"; | |
115 | const char * const config_element_destination = "destination"; | |
116 | const char * const config_element_path = "path"; | |
117 | const char * const config_element_net_output = "net_output"; | |
118 | const char * const config_element_control_uri = "control_uri"; | |
119 | const char * const config_element_data_uri = "data_uri"; | |
120 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
121 | const char * const config_element_pid = "pid"; |
122 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 123 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
124 | const char * const config_element_pid_tracker = "pid_tracker"; |
125 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
126 | const char * const config_element_targets = "targets"; |
127 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
128 | |
129 | const char * const config_domain_type_kernel = "KERNEL"; | |
130 | const char * const config_domain_type_ust = "UST"; | |
131 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 132 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 133 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
134 | |
135 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
136 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
137 | const char * const config_buffer_type_global = "GLOBAL"; | |
138 | ||
139 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
140 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
141 | ||
142 | const char * const config_output_type_splice = "SPLICE"; | |
143 | const char * const config_output_type_mmap = "MMAP"; | |
144 | ||
145 | const char * const config_loglevel_type_all = "ALL"; | |
146 | const char * const config_loglevel_type_range = "RANGE"; | |
147 | const char * const config_loglevel_type_single = "SINGLE"; | |
148 | ||
149 | const char * const config_event_type_all = "ALL"; | |
150 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
151 | const char * const config_event_type_probe = "PROBE"; | |
152 | const char * const config_event_type_function = "FUNCTION"; | |
153 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
154 | const char * const config_event_type_noop = "NOOP"; | |
155 | const char * const config_event_type_syscall = "SYSCALL"; | |
156 | const char * const config_event_type_kprobe = "KPROBE"; | |
157 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
158 | ||
159 | const char * const config_event_context_pid = "PID"; | |
160 | const char * const config_event_context_procname = "PROCNAME"; | |
161 | const char * const config_event_context_prio = "PRIO"; | |
162 | const char * const config_event_context_nice = "NICE"; | |
163 | const char * const config_event_context_vpid = "VPID"; | |
164 | const char * const config_event_context_tid = "TID"; | |
165 | const char * const config_event_context_vtid = "VTID"; | |
166 | const char * const config_event_context_ppid = "PPID"; | |
167 | const char * const config_event_context_vppid = "VPPID"; | |
168 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
169 | const char * const config_event_context_hostname = "HOSTNAME"; | |
170 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 171 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
045fc617 JG |
172 | const char * const config_event_context_app = "APP"; |
173 | ||
fb198a11 | 174 | |
dcf266c0 JG |
175 | struct consumer_output { |
176 | int enabled; | |
177 | char *path; | |
178 | char *control_uri; | |
179 | char *data_uri; | |
180 | }; | |
181 | ||
1501a7f3 JG |
182 | static int config_entry_handler_filter(struct handler_filter_args *args, |
183 | const char *section, const char *name, const char *value) | |
184 | { | |
185 | int ret = 0; | |
186 | struct config_entry entry = { section, name, value }; | |
187 | ||
188 | assert(args); | |
189 | ||
190 | if (!section || !name || !value) { | |
191 | ret = -EIO; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | if (args->section) { | |
196 | if (strcmp(args->section, section)) { | |
197 | goto end; | |
198 | } | |
199 | } | |
200 | ||
201 | ret = args->handler(&entry, args->user_data); | |
202 | end: | |
203 | return ret; | |
204 | } | |
205 | ||
206 | LTTNG_HIDDEN | |
207 | int config_get_section_entries(const char *override_path, const char *section, | |
208 | config_entry_handler_cb handler, void *user_data) | |
209 | { | |
210 | int ret = 0; | |
7ab02a27 | 211 | char *path; |
1501a7f3 JG |
212 | FILE *config_file = NULL; |
213 | struct handler_filter_args filter = { section, handler, user_data }; | |
214 | ||
7ab02a27 DG |
215 | /* First, try system-wide conf. file. */ |
216 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
217 | ||
218 | config_file = fopen(path, "r"); | |
219 | if (config_file) { | |
220 | DBG("Loading daemon conf file at %s", path); | |
221 | /* | |
222 | * Return value is not very important here since error or not, we | |
223 | * continue and try the next possible conf. file. | |
224 | */ | |
225 | (void) ini_parse_file(config_file, | |
226 | (ini_entry_handler) config_entry_handler_filter, | |
227 | (void *) &filter); | |
228 | fclose(config_file); | |
229 | } | |
230 | ||
231 | /* Second is the user local configuration. */ | |
232 | path = utils_get_home_dir(); | |
233 | if (path) { | |
234 | char fullpath[PATH_MAX]; | |
235 | ||
236 | ret = snprintf(fullpath, sizeof(fullpath), | |
237 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
238 | if (ret < 0) { | |
239 | PERROR("snprintf user conf. path"); | |
240 | goto error; | |
241 | } | |
242 | ||
243 | config_file = fopen(fullpath, "r"); | |
244 | if (config_file) { | |
245 | DBG("Loading daemon user conf file at %s", path); | |
246 | /* | |
247 | * Return value is not very important here since error or not, we | |
248 | * continue and try the next possible conf. file. | |
249 | */ | |
250 | (void) ini_parse_file(config_file, | |
251 | (ini_entry_handler) config_entry_handler_filter, | |
252 | (void *) &filter); | |
253 | fclose(config_file); | |
254 | } | |
255 | } | |
256 | ||
257 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
258 | if (override_path) { |
259 | config_file = fopen(override_path, "r"); | |
260 | if (config_file) { | |
7ab02a27 DG |
261 | DBG("Loading daemon command line conf file at %s", override_path); |
262 | (void) ini_parse_file(config_file, | |
263 | (ini_entry_handler) config_entry_handler_filter, | |
264 | (void *) &filter); | |
265 | fclose(config_file); | |
1501a7f3 JG |
266 | } else { |
267 | ERR("Failed to open daemon configuration file at %s", | |
268 | override_path); | |
269 | ret = -ENOENT; | |
7ab02a27 | 270 | goto error; |
1501a7f3 JG |
271 | } |
272 | } | |
273 | ||
7ab02a27 DG |
274 | /* Everything went well. */ |
275 | ret = 0; | |
1501a7f3 | 276 | |
7ab02a27 | 277 | error: |
1501a7f3 JG |
278 | return ret; |
279 | } | |
280 | ||
281 | LTTNG_HIDDEN | |
282 | int config_parse_value(const char *value) | |
283 | { | |
284 | int i, ret = 0; | |
285 | char *endptr, *lower_str; | |
286 | size_t len; | |
287 | unsigned long v; | |
288 | ||
289 | len = strlen(value); | |
290 | if (!len) { | |
291 | ret = -1; | |
292 | goto end; | |
293 | } | |
294 | ||
295 | v = strtoul(value, &endptr, 10); | |
296 | if (endptr != value) { | |
297 | ret = v; | |
298 | goto end; | |
299 | } | |
300 | ||
301 | lower_str = zmalloc(len + 1); | |
302 | if (!lower_str) { | |
303 | PERROR("zmalloc"); | |
304 | ret = -errno; | |
305 | goto end; | |
306 | } | |
307 | ||
308 | for (i = 0; i < len; i++) { | |
309 | lower_str[i] = tolower(value[i]); | |
310 | } | |
311 | ||
312 | if (!strcmp(lower_str, config_str_yes) || | |
313 | !strcmp(lower_str, config_str_true) || | |
314 | !strcmp(lower_str, config_str_on)) { | |
315 | ret = 1; | |
316 | } else if (!strcmp(lower_str, config_str_no) || | |
317 | !strcmp(lower_str, config_str_false) || | |
318 | !strcmp(lower_str, config_str_off)) { | |
319 | ret = 0; | |
320 | } else { | |
321 | ret = -1; | |
322 | } | |
323 | ||
324 | free(lower_str); | |
325 | end: | |
326 | return ret; | |
327 | } | |
36f2332b JG |
328 | |
329 | /* | |
330 | * Returns a xmlChar string which must be released using xmlFree(). | |
331 | */ | |
332 | static xmlChar *encode_string(const char *in_str) | |
333 | { | |
334 | xmlChar *out_str = NULL; | |
335 | xmlCharEncodingHandlerPtr handler; | |
336 | int out_len, ret, in_len; | |
337 | ||
338 | assert(in_str); | |
339 | ||
340 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
341 | if (!handler) { | |
342 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
343 | goto end; | |
344 | } | |
345 | ||
346 | in_len = strlen(in_str); | |
347 | /* | |
f76d886f JG |
348 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
349 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 350 | */ |
f76d886f | 351 | out_len = (in_len * 4) + 1; |
36f2332b JG |
352 | out_str = xmlMalloc(out_len); |
353 | if (!out_str) { | |
354 | goto end; | |
355 | } | |
356 | ||
357 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
358 | if (ret < 0) { | |
359 | xmlFree(out_str); | |
360 | out_str = NULL; | |
361 | goto end; | |
362 | } | |
363 | ||
364 | /* out_len is now the size of out_str */ | |
365 | out_str[out_len] = '\0'; | |
366 | end: | |
367 | return out_str; | |
368 | } | |
369 | ||
370 | LTTNG_HIDDEN | |
705bb62f | 371 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
372 | { |
373 | int ret; | |
374 | struct config_writer *writer; | |
375 | xmlOutputBufferPtr buffer; | |
376 | ||
377 | writer = zmalloc(sizeof(struct config_writer)); | |
378 | if (!writer) { | |
379 | PERROR("zmalloc config_writer_create"); | |
380 | goto end; | |
381 | } | |
382 | ||
383 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
384 | if (!buffer) { | |
385 | goto error_destroy; | |
386 | } | |
387 | ||
388 | writer->writer = xmlNewTextWriter(buffer); | |
389 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
390 | config_xml_encoding, NULL); | |
391 | if (ret < 0) { | |
392 | goto error_destroy; | |
393 | } | |
394 | ||
395 | ret = xmlTextWriterSetIndentString(writer->writer, | |
396 | BAD_CAST config_xml_indent_string); | |
705bb62f | 397 | if (ret) { |
36f2332b JG |
398 | goto error_destroy; |
399 | } | |
400 | ||
705bb62f JRJ |
401 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
402 | if (ret) { | |
36f2332b JG |
403 | goto error_destroy; |
404 | } | |
405 | ||
406 | end: | |
407 | return writer; | |
408 | error_destroy: | |
409 | config_writer_destroy(writer); | |
410 | return NULL; | |
411 | } | |
412 | ||
413 | LTTNG_HIDDEN | |
414 | int config_writer_destroy(struct config_writer *writer) | |
415 | { | |
416 | int ret = 0; | |
417 | ||
418 | if (!writer) { | |
419 | ret = -EINVAL; | |
420 | goto end; | |
421 | } | |
422 | ||
423 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
424 | WARN("Could not close XML document"); | |
425 | ret = -EIO; | |
426 | } | |
427 | ||
428 | if (writer->writer) { | |
429 | xmlFreeTextWriter(writer->writer); | |
430 | } | |
431 | ||
432 | free(writer); | |
433 | end: | |
434 | return ret; | |
435 | } | |
436 | ||
437 | LTTNG_HIDDEN | |
438 | int config_writer_open_element(struct config_writer *writer, | |
439 | const char *element_name) | |
440 | { | |
441 | int ret; | |
442 | xmlChar *encoded_element_name; | |
443 | ||
444 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
445 | ret = -1; | |
446 | goto end; | |
447 | } | |
448 | ||
449 | encoded_element_name = encode_string(element_name); | |
450 | if (!encoded_element_name) { | |
451 | ret = -1; | |
452 | goto end; | |
453 | } | |
454 | ||
455 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
456 | xmlFree(encoded_element_name); | |
457 | end: | |
28676a1d | 458 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
459 | } |
460 | ||
e10b6a1c JG |
461 | LTTNG_HIDDEN |
462 | int config_writer_write_attribute(struct config_writer *writer, | |
463 | const char *name, const char *value) | |
464 | { | |
465 | int ret; | |
466 | xmlChar *encoded_name = NULL; | |
467 | xmlChar *encoded_value = NULL; | |
468 | ||
469 | if (!writer || !writer->writer || !name || !name[0]) { | |
470 | ret = -1; | |
471 | goto end; | |
472 | } | |
473 | ||
474 | encoded_name = encode_string(name); | |
475 | if (!encoded_name) { | |
476 | ret = -1; | |
477 | goto end; | |
478 | } | |
479 | ||
480 | encoded_value = encode_string(value); | |
481 | if (!encoded_value) { | |
482 | ret = -1; | |
483 | goto end; | |
484 | } | |
485 | ||
486 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
487 | encoded_value); | |
488 | end: | |
489 | xmlFree(encoded_name); | |
490 | xmlFree(encoded_value); | |
491 | return ret >= 0 ? 0 : ret; | |
492 | } | |
493 | ||
36f2332b JG |
494 | LTTNG_HIDDEN |
495 | int config_writer_close_element(struct config_writer *writer) | |
496 | { | |
497 | int ret; | |
498 | ||
499 | if (!writer || !writer->writer) { | |
500 | ret = -1; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | ret = xmlTextWriterEndElement(writer->writer); | |
505 | end: | |
28676a1d | 506 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
507 | } |
508 | ||
509 | LTTNG_HIDDEN | |
510 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
511 | const char *element_name, uint64_t value) | |
512 | { | |
513 | int ret; | |
514 | xmlChar *encoded_element_name; | |
515 | ||
516 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
517 | ret = -1; | |
518 | goto end; | |
519 | } | |
520 | ||
521 | encoded_element_name = encode_string(element_name); | |
522 | if (!encoded_element_name) { | |
523 | ret = -1; | |
524 | goto end; | |
525 | } | |
526 | ||
527 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
528 | encoded_element_name, "%" PRIu64, value); | |
529 | xmlFree(encoded_element_name); | |
530 | end: | |
28676a1d | 531 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
532 | } |
533 | ||
534 | LTTNG_HIDDEN | |
535 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
536 | const char *element_name, int64_t value) | |
537 | { | |
538 | int ret; | |
539 | xmlChar *encoded_element_name; | |
540 | ||
541 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
542 | ret = -1; | |
543 | goto end; | |
544 | } | |
545 | ||
546 | encoded_element_name = encode_string(element_name); | |
547 | if (!encoded_element_name) { | |
548 | ret = -1; | |
549 | goto end; | |
550 | } | |
551 | ||
552 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
553 | encoded_element_name, "%" PRIi64, value); | |
554 | xmlFree(encoded_element_name); | |
555 | end: | |
28676a1d | 556 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
557 | } |
558 | ||
559 | LTTNG_HIDDEN | |
560 | int config_writer_write_element_bool(struct config_writer *writer, | |
561 | const char *element_name, int value) | |
562 | { | |
563 | return config_writer_write_element_string(writer, element_name, | |
564 | value ? config_xml_true : config_xml_false); | |
565 | } | |
566 | ||
567 | LTTNG_HIDDEN | |
568 | int config_writer_write_element_string(struct config_writer *writer, | |
569 | const char *element_name, const char *value) | |
570 | { | |
571 | int ret; | |
572 | xmlChar *encoded_element_name = NULL; | |
573 | xmlChar *encoded_value = NULL; | |
574 | ||
575 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
576 | !value) { | |
577 | ret = -1; | |
578 | goto end; | |
579 | } | |
580 | ||
581 | encoded_element_name = encode_string(element_name); | |
582 | if (!encoded_element_name) { | |
583 | ret = -1; | |
584 | goto end; | |
585 | } | |
586 | ||
587 | encoded_value = encode_string(value); | |
588 | if (!encoded_value) { | |
589 | ret = -1; | |
590 | goto end; | |
591 | } | |
592 | ||
593 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 594 | encoded_value); |
36f2332b JG |
595 | end: |
596 | xmlFree(encoded_element_name); | |
597 | xmlFree(encoded_value); | |
28676a1d | 598 | return ret >= 0 ? 0 : ret; |
36f2332b | 599 | } |
dcf266c0 JG |
600 | |
601 | static | |
602 | void xml_error_handler(void *ctx, const char *format, ...) | |
603 | { | |
604 | char *errMsg; | |
605 | va_list args; | |
606 | int ret; | |
607 | ||
608 | va_start(args, format); | |
609 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 610 | va_end(args); |
dcf266c0 JG |
611 | if (ret == -1) { |
612 | ERR("String allocation failed in xml error handler"); | |
613 | return; | |
614 | } | |
dcf266c0 JG |
615 | |
616 | fprintf(stderr, "XML Error: %s", errMsg); | |
617 | free(errMsg); | |
618 | } | |
619 | ||
620 | static | |
621 | void fini_session_config_validation_ctx( | |
622 | struct session_config_validation_ctx *ctx) | |
623 | { | |
624 | if (ctx->parser_ctx) { | |
625 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
626 | } | |
627 | ||
628 | if (ctx->schema) { | |
629 | xmlSchemaFree(ctx->schema); | |
630 | } | |
631 | ||
632 | if (ctx->schema_validation_ctx) { | |
633 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
634 | } | |
635 | ||
636 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
637 | } | |
638 | ||
54e399cb JG |
639 | static |
640 | char *get_session_config_xsd_path() | |
641 | { | |
642 | char *xsd_path; | |
e8fa9fb0 | 643 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
644 | size_t base_path_len; |
645 | size_t max_path_len; | |
646 | ||
647 | if (!base_path) { | |
648 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
649 | } | |
650 | ||
651 | base_path_len = strlen(base_path); | |
652 | max_path_len = base_path_len + | |
653 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
654 | xsd_path = zmalloc(max_path_len); | |
655 | if (!xsd_path) { | |
656 | goto end; | |
657 | } | |
658 | ||
659 | strncpy(xsd_path, base_path, max_path_len); | |
660 | if (xsd_path[base_path_len - 1] != '/') { | |
661 | xsd_path[base_path_len++] = '/'; | |
662 | } | |
663 | ||
664 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
665 | max_path_len - base_path_len); | |
666 | end: | |
667 | return xsd_path; | |
668 | } | |
669 | ||
dcf266c0 JG |
670 | static |
671 | int init_session_config_validation_ctx( | |
672 | struct session_config_validation_ctx *ctx) | |
673 | { | |
674 | int ret; | |
54e399cb JG |
675 | char *xsd_path = get_session_config_xsd_path(); |
676 | ||
677 | if (!xsd_path) { | |
678 | ret = -LTTNG_ERR_NOMEM; | |
679 | goto end; | |
680 | } | |
dcf266c0 | 681 | |
54e399cb | 682 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
683 | if (!ctx->parser_ctx) { |
684 | ERR("XSD parser context creation failed"); | |
685 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
686 | goto end; | |
687 | } | |
688 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
689 | xml_error_handler, NULL); | |
690 | ||
691 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
692 | if (!ctx->schema) { | |
693 | ERR("XSD parsing failed"); | |
694 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
695 | goto end; | |
696 | } | |
697 | ||
698 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
699 | if (!ctx->schema_validation_ctx) { | |
700 | ERR("XSD validation context creation failed"); | |
701 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
702 | goto end; | |
703 | } | |
704 | ||
705 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
706 | xml_error_handler, NULL); | |
707 | ret = 0; | |
708 | ||
709 | end: | |
710 | if (ret) { | |
711 | fini_session_config_validation_ctx(ctx); | |
712 | } | |
713 | ||
54e399cb | 714 | free(xsd_path); |
dcf266c0 JG |
715 | return ret; |
716 | } | |
717 | ||
718 | static | |
719 | int parse_uint(xmlChar *str, uint64_t *val) | |
720 | { | |
721 | int ret; | |
722 | char *endptr; | |
723 | ||
724 | if (!str || !val) { | |
725 | ret = -1; | |
726 | goto end; | |
727 | } | |
728 | ||
729 | *val = strtoull((const char *) str, &endptr, 10); | |
730 | if (!endptr || *endptr) { | |
731 | ret = -1; | |
732 | } else { | |
733 | ret = 0; | |
734 | } | |
735 | ||
736 | end: | |
737 | return ret; | |
738 | } | |
739 | ||
740 | static | |
741 | int parse_int(xmlChar *str, int64_t *val) | |
742 | { | |
743 | int ret; | |
744 | char *endptr; | |
745 | ||
746 | if (!str || !val) { | |
747 | ret = -1; | |
748 | goto end; | |
749 | } | |
750 | ||
751 | *val = strtoll((const char *) str, &endptr, 10); | |
752 | if (!endptr || *endptr) { | |
753 | ret = -1; | |
754 | } else { | |
755 | ret = 0; | |
756 | } | |
757 | ||
758 | end: | |
759 | return ret; | |
760 | } | |
761 | ||
762 | static | |
763 | int parse_bool(xmlChar *str, int *val) | |
764 | { | |
765 | int ret = 0; | |
766 | ||
767 | if (!str || !val) { | |
768 | ret = -1; | |
769 | goto end; | |
770 | } | |
771 | ||
772 | if (!strcmp((const char *) str, config_xml_true)) { | |
773 | *val = 1; | |
774 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
775 | *val = 0; | |
776 | } else { | |
777 | WARN("Invalid boolean value encoutered (%s).", | |
778 | (const char *) str); | |
779 | ret = -1; | |
780 | } | |
781 | end: | |
782 | return ret; | |
783 | } | |
784 | ||
785 | static | |
786 | int get_domain_type(xmlChar *domain) | |
787 | { | |
788 | int ret; | |
789 | ||
790 | if (!domain) { | |
791 | goto error; | |
792 | } | |
793 | ||
794 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
795 | ret = LTTNG_DOMAIN_KERNEL; | |
796 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
797 | ret = LTTNG_DOMAIN_UST; | |
798 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
799 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
800 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
801 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
802 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
803 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
804 | } else { |
805 | goto error; | |
806 | } | |
807 | ||
808 | return ret; | |
809 | error: | |
810 | return -1; | |
811 | } | |
812 | ||
813 | static | |
814 | int get_buffer_type(xmlChar *buffer_type) | |
815 | { | |
816 | int ret; | |
817 | ||
818 | if (!buffer_type) { | |
819 | goto error; | |
820 | } | |
821 | ||
822 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
823 | ret = LTTNG_BUFFER_GLOBAL; | |
824 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
825 | ret = LTTNG_BUFFER_PER_UID; | |
826 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
827 | ret = LTTNG_BUFFER_PER_PID; | |
828 | } else { | |
829 | goto error; | |
830 | } | |
831 | ||
832 | return ret; | |
833 | error: | |
834 | return -1; | |
835 | } | |
836 | ||
837 | static | |
838 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
839 | { | |
840 | int ret; | |
841 | ||
842 | if (!overwrite_mode) { | |
843 | goto error; | |
844 | } | |
845 | ||
846 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
847 | ret = 1; | |
848 | } else if (!strcmp((char *) overwrite_mode, | |
849 | config_overwrite_mode_discard)) { | |
850 | ret = 0; | |
851 | } else { | |
852 | goto error; | |
853 | } | |
854 | ||
855 | return ret; | |
856 | error: | |
857 | return -1; | |
858 | } | |
859 | ||
860 | static | |
861 | int get_output_type(xmlChar *output_type) | |
862 | { | |
863 | int ret; | |
864 | ||
865 | if (!output_type) { | |
866 | goto error; | |
867 | } | |
868 | ||
869 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
870 | ret = LTTNG_EVENT_MMAP; | |
871 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
872 | ret = LTTNG_EVENT_SPLICE; | |
873 | } else { | |
874 | goto error; | |
875 | } | |
876 | ||
877 | return ret; | |
878 | error: | |
879 | return -1; | |
880 | } | |
881 | ||
882 | static | |
883 | int get_event_type(xmlChar *event_type) | |
884 | { | |
885 | int ret; | |
886 | ||
887 | if (!event_type) { | |
888 | goto error; | |
889 | } | |
890 | ||
891 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
892 | ret = LTTNG_EVENT_ALL; | |
893 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
894 | ret = LTTNG_EVENT_TRACEPOINT; | |
895 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
896 | ret = LTTNG_EVENT_PROBE; | |
897 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
898 | ret = LTTNG_EVENT_FUNCTION; | |
899 | } else if (!strcmp((char *) event_type, | |
900 | config_event_type_function_entry)) { | |
901 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
902 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
903 | ret = LTTNG_EVENT_NOOP; | |
904 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
905 | ret = LTTNG_EVENT_SYSCALL; | |
906 | } else { | |
907 | goto error; | |
908 | } | |
909 | ||
910 | return ret; | |
911 | error: | |
912 | return -1; | |
913 | } | |
914 | ||
915 | static | |
916 | int get_loglevel_type(xmlChar *loglevel_type) | |
917 | { | |
918 | int ret; | |
919 | ||
920 | if (!loglevel_type) { | |
921 | goto error; | |
922 | } | |
923 | ||
924 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
925 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
926 | } else if (!strcmp((char *) loglevel_type, | |
927 | config_loglevel_type_range)) { | |
928 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
929 | } else if (!strcmp((char *) loglevel_type, | |
930 | config_loglevel_type_single)) { | |
931 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
932 | } else { | |
933 | goto error; | |
934 | } | |
935 | ||
936 | return ret; | |
937 | error: | |
938 | return -1; | |
939 | } | |
940 | ||
941 | /* | |
942 | * Return the context type or -1 on error. | |
943 | */ | |
944 | static | |
945 | int get_context_type(xmlChar *context_type) | |
946 | { | |
947 | int ret; | |
948 | ||
949 | if (!context_type) { | |
950 | goto error; | |
951 | } | |
952 | ||
953 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
954 | ret = LTTNG_EVENT_CONTEXT_PID; | |
955 | } else if (!strcmp((char *) context_type, | |
956 | config_event_context_procname)) { | |
957 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
958 | } else if (!strcmp((char *) context_type, | |
959 | config_event_context_prio)) { | |
960 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
961 | } else if (!strcmp((char *) context_type, | |
962 | config_event_context_nice)) { | |
963 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
964 | } else if (!strcmp((char *) context_type, | |
965 | config_event_context_vpid)) { | |
966 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
967 | } else if (!strcmp((char *) context_type, | |
968 | config_event_context_tid)) { | |
969 | ret = LTTNG_EVENT_CONTEXT_TID; | |
970 | } else if (!strcmp((char *) context_type, | |
971 | config_event_context_vtid)) { | |
972 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
973 | } else if (!strcmp((char *) context_type, | |
974 | config_event_context_ppid)) { | |
975 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
976 | } else if (!strcmp((char *) context_type, | |
977 | config_event_context_vppid)) { | |
978 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
979 | } else if (!strcmp((char *) context_type, | |
980 | config_event_context_pthread_id)) { | |
981 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
982 | } else if (!strcmp((char *) context_type, | |
983 | config_event_context_hostname)) { | |
984 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
985 | } else if (!strcmp((char *) context_type, | |
986 | config_event_context_ip)) { | |
987 | ret = LTTNG_EVENT_CONTEXT_IP; | |
988 | } else { | |
989 | goto error; | |
990 | } | |
991 | ||
992 | return ret; | |
993 | error: | |
994 | return -1; | |
995 | } | |
996 | ||
997 | static | |
998 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
999 | { | |
1000 | int ret; | |
1001 | xmlNodePtr node; | |
1002 | ||
1003 | for (node = xmlFirstElementChild(domain_node); node; | |
1004 | node = xmlNextElementSibling(node)) { | |
1005 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1006 | /* domain type */ | |
1007 | xmlChar *node_content = xmlNodeGetContent(node); | |
1008 | if (!node_content) { | |
1009 | ret = -LTTNG_ERR_NOMEM; | |
1010 | goto end; | |
1011 | } | |
1012 | ||
1013 | ret = get_domain_type(node_content); | |
1014 | free(node_content); | |
1015 | if (ret < 0) { | |
1016 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1017 | goto end; | |
1018 | } | |
1019 | ||
1020 | domain->type = ret; | |
1021 | } else if (!strcmp((const char *) node->name, | |
1022 | config_element_buffer_type)) { | |
1023 | /* buffer type */ | |
1024 | xmlChar *node_content = xmlNodeGetContent(node); | |
1025 | if (!node_content) { | |
1026 | ret = -LTTNG_ERR_NOMEM; | |
1027 | goto end; | |
1028 | } | |
1029 | ||
1030 | ret = get_buffer_type(node_content); | |
1031 | free(node_content); | |
1032 | if (ret < 0) { | |
1033 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1034 | goto end; | |
1035 | } | |
1036 | ||
1037 | domain->buf_type = ret; | |
1038 | } | |
1039 | } | |
1040 | ret = 0; | |
1041 | end: | |
1042 | return ret; | |
1043 | } | |
1044 | ||
1045 | static | |
1046 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1047 | char **data_uri) | |
1048 | { | |
1049 | xmlNodePtr node; | |
1050 | ||
1051 | for (node = xmlFirstElementChild(net_output_node); node; | |
1052 | node = xmlNextElementSibling(node)) { | |
1053 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1054 | /* control_uri */ | |
1055 | *control_uri = (char *) xmlNodeGetContent(node); | |
1056 | if (!*control_uri) { | |
1057 | break; | |
1058 | } | |
1059 | } else { | |
1060 | /* data_uri */ | |
1061 | *data_uri = (char *) xmlNodeGetContent(node); | |
1062 | if (!*data_uri) { | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1069 | } | |
1070 | ||
1071 | static | |
1072 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1073 | struct consumer_output *output) | |
1074 | { | |
1075 | int ret; | |
1076 | xmlNodePtr node; | |
1077 | ||
1078 | assert(output); | |
1079 | ||
1080 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1081 | node = xmlNextElementSibling(node)) { | |
1082 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1083 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1084 | ||
1085 | /* enabled */ | |
1086 | if (!enabled_str) { | |
1087 | ret = -LTTNG_ERR_NOMEM; | |
1088 | goto end; | |
1089 | } | |
1090 | ||
1091 | ret = parse_bool(enabled_str, &output->enabled); | |
1092 | free(enabled_str); | |
1093 | if (ret) { | |
1094 | goto end; | |
1095 | } | |
1096 | } else { | |
1097 | xmlNodePtr output_type_node; | |
1098 | ||
1099 | /* destination */ | |
1100 | output_type_node = xmlFirstElementChild(node); | |
1101 | if (!output_type_node) { | |
1102 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1103 | goto end; | |
1104 | } | |
1105 | ||
1106 | if (!strcmp((const char *) output_type_node->name, | |
1107 | config_element_path)) { | |
1108 | /* path */ | |
1109 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1110 | if (!output->path) { | |
1111 | ret = -LTTNG_ERR_NOMEM; | |
1112 | goto end; | |
1113 | } | |
1114 | } else { | |
1115 | /* net_output */ | |
1116 | ret = get_net_output_uris(output_type_node, | |
1117 | &output->control_uri, &output->data_uri); | |
1118 | if (ret) { | |
1119 | goto end; | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | ret = 0; | |
1125 | ||
1126 | end: | |
1127 | if (ret) { | |
1128 | free(output->path); | |
1129 | free(output->control_uri); | |
1130 | free(output->data_uri); | |
1131 | memset(output, 0, sizeof(struct consumer_output)); | |
1132 | } | |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | static | |
1137 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1138 | const char *control_uri, const char *data_uri) | |
1139 | { | |
1140 | int ret; | |
1141 | struct lttng_handle *handle; | |
1142 | const char *uri = NULL; | |
1143 | ||
1144 | assert(name); | |
1145 | assert(domain); | |
1146 | ||
1147 | handle = lttng_create_handle(name, domain); | |
1148 | if (!handle) { | |
1149 | ret = -LTTNG_ERR_NOMEM; | |
1150 | goto end; | |
1151 | } | |
1152 | ||
1153 | if (!control_uri || !data_uri) { | |
1154 | uri = control_uri ? control_uri : data_uri; | |
1155 | control_uri = uri; | |
1156 | data_uri = uri; | |
1157 | } | |
1158 | ||
1159 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1160 | lttng_destroy_handle(handle); | |
1161 | end: | |
1162 | return ret; | |
1163 | } | |
1164 | ||
1165 | static | |
1166 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1167 | { | |
1168 | int ret; | |
1169 | xmlNodePtr node = NULL; | |
1170 | xmlNodePtr snapshot_output_list_node; | |
1171 | xmlNodePtr snapshot_output_node; | |
1172 | ||
1173 | assert(session_name); | |
1174 | ||
1175 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1176 | if (ret) { | |
1177 | goto end; | |
1178 | } | |
1179 | ||
1180 | if (!output_node) { | |
1181 | goto end; | |
1182 | } | |
1183 | ||
1184 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1185 | ||
1186 | /* Parse and create snapshot outputs */ | |
1187 | ||
1188 | for (snapshot_output_node = | |
1189 | xmlFirstElementChild(snapshot_output_list_node); | |
1190 | snapshot_output_node; snapshot_output_node = | |
1191 | xmlNextElementSibling(snapshot_output_node)) { | |
1192 | char *name = NULL; | |
1193 | uint64_t max_size = UINT64_MAX; | |
1194 | struct consumer_output output = { 0 }; | |
1195 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1196 | ||
1197 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1198 | node = xmlNextElementSibling(node)) { | |
1199 | if (!strcmp((const char *) node->name, | |
1200 | config_element_name)) { | |
1201 | /* name */ | |
1202 | name = (char *) xmlNodeGetContent(node); | |
1203 | if (!name) { | |
1204 | ret = -LTTNG_ERR_NOMEM; | |
1205 | goto error_snapshot_output; | |
1206 | } | |
1207 | } else if (!strcmp((const char *) node->name, | |
1208 | config_element_max_size)) { | |
1209 | xmlChar *content = xmlNodeGetContent(node); | |
1210 | ||
1211 | /* max_size */ | |
1212 | if (!content) { | |
1213 | ret = -LTTNG_ERR_NOMEM; | |
1214 | goto error_snapshot_output; | |
1215 | } | |
1216 | ret = parse_uint(content, &max_size); | |
1217 | free(content); | |
1218 | if (ret) { | |
1219 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1220 | goto error_snapshot_output; | |
1221 | } | |
1222 | } else { | |
1223 | /* consumer_output */ | |
1224 | ret = process_consumer_output(node, &output); | |
1225 | if (ret) { | |
1226 | goto error_snapshot_output; | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | snapshot_output = lttng_snapshot_output_create(); | |
1232 | if (!snapshot_output) { | |
1233 | ret = -LTTNG_ERR_NOMEM; | |
1234 | goto error_snapshot_output; | |
1235 | } | |
1236 | ||
1237 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1238 | if (ret) { | |
1239 | goto error_snapshot_output; | |
1240 | } | |
1241 | ||
1242 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1243 | if (ret) { | |
1244 | goto error_snapshot_output; | |
1245 | } | |
1246 | ||
1247 | if (output.path) { | |
1248 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1249 | snapshot_output); | |
1250 | if (ret) { | |
1251 | goto error_snapshot_output; | |
1252 | } | |
1253 | } else { | |
1254 | if (output.control_uri) { | |
1255 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1256 | snapshot_output); | |
1257 | if (ret) { | |
1258 | goto error_snapshot_output; | |
1259 | } | |
1260 | } | |
1261 | ||
1262 | if (output.data_uri) { | |
1263 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1264 | snapshot_output); | |
1265 | if (ret) { | |
1266 | goto error_snapshot_output; | |
1267 | } | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1272 | error_snapshot_output: | |
1273 | free(name); | |
1274 | free(output.path); | |
1275 | free(output.control_uri); | |
1276 | free(output.data_uri); | |
1277 | lttng_snapshot_output_destroy(snapshot_output); | |
1278 | if (ret) { | |
1279 | goto end; | |
1280 | } | |
1281 | } | |
1282 | end: | |
1283 | return ret; | |
1284 | } | |
1285 | ||
1286 | static | |
1287 | int create_session(const char *name, | |
1288 | struct lttng_domain *kernel_domain, | |
1289 | struct lttng_domain *ust_domain, | |
1290 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1291 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1292 | xmlNodePtr output_node, |
1293 | uint64_t live_timer_interval) | |
1294 | { | |
1295 | int ret; | |
1296 | struct consumer_output output = { 0 }; | |
1297 | xmlNodePtr consumer_output_node; | |
1298 | ||
1299 | assert(name); | |
dcf266c0 JG |
1300 | |
1301 | if (output_node) { | |
1302 | consumer_output_node = xmlFirstElementChild(output_node); | |
1303 | if (!consumer_output_node) { | |
1304 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1305 | goto end; | |
1306 | } | |
1307 | ||
1308 | if (strcmp((const char *) consumer_output_node->name, | |
1309 | config_element_consumer_output)) { | |
1310 | WARN("Invalid output type, expected %s node", | |
1311 | config_element_consumer_output); | |
1312 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1313 | goto end; | |
1314 | } | |
1315 | ||
1316 | ret = process_consumer_output(consumer_output_node, &output); | |
1317 | if (ret) { | |
1318 | goto end; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | if (live_timer_interval != UINT64_MAX && | |
1323 | !output.control_uri && !output.data_uri) { | |
1324 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1325 | goto end; | |
1326 | } | |
1327 | ||
1328 | if (output.control_uri || output.data_uri) { | |
1329 | int i; | |
1330 | struct lttng_domain *domain; | |
1331 | struct lttng_domain *domains[] = | |
c8c5f7ce | 1332 | { kernel_domain, ust_domain, jul_domain, log4j_domain }; |
dcf266c0 JG |
1333 | |
1334 | /* network destination */ | |
1335 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1336 | /* |
1337 | * URLs are provided for sure since the test above make sure that | |
1338 | * with a live timer the data and control URIs are provided. So, | |
1339 | * NULL is passed here and will be set right after. | |
1340 | */ | |
1341 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1342 | } else { |
1343 | ret = lttng_create_session(name, NULL); | |
1344 | } | |
1345 | if (ret) { | |
1346 | goto end; | |
1347 | } | |
1348 | ||
301423df | 1349 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1350 | domain = domains[i]; |
1351 | if (!domain) { | |
1352 | continue; | |
1353 | } | |
1354 | ||
1355 | ret = create_session_net_output(name, domain, output.control_uri, | |
1356 | output.data_uri); | |
1357 | if (ret) { | |
1358 | goto end; | |
1359 | } | |
1360 | } | |
1361 | } else { | |
1362 | /* either local output or no output */ | |
1363 | ret = lttng_create_session(name, output.path); | |
1364 | if (ret) { | |
1365 | goto end; | |
1366 | } | |
1367 | } | |
1368 | end: | |
1369 | free(output.path); | |
1370 | free(output.control_uri); | |
1371 | free(output.data_uri); | |
1372 | return ret; | |
1373 | } | |
1374 | static | |
1375 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1376 | struct lttng_event_probe_attr *attr) | |
1377 | { | |
1378 | int ret; | |
1379 | ||
1380 | assert(probe_attribute_node); | |
1381 | assert(attr); | |
1382 | ||
1383 | if (!strcmp((const char *) probe_attribute_node->name, | |
1384 | config_element_address)) { | |
1385 | xmlChar *content; | |
1386 | uint64_t addr = 0; | |
1387 | ||
1388 | /* addr */ | |
1389 | content = xmlNodeGetContent(probe_attribute_node); | |
1390 | if (!content) { | |
1391 | ret = -LTTNG_ERR_NOMEM; | |
1392 | goto end; | |
1393 | } | |
1394 | ||
1395 | ret = parse_uint(content, &addr); | |
1396 | free(content); | |
1397 | if (ret) { | |
1398 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1399 | goto end; | |
1400 | } | |
1401 | ||
1402 | attr->addr = addr; | |
1403 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1404 | config_element_offset)) { | |
1405 | xmlChar *content; | |
1406 | uint64_t offset = 0; | |
1407 | ||
1408 | /* offset */ | |
1409 | content = xmlNodeGetContent(probe_attribute_node); | |
1410 | if (!content) { | |
1411 | ret = -LTTNG_ERR_NOMEM; | |
1412 | goto end; | |
1413 | } | |
1414 | ||
1415 | ret = parse_uint(content, &offset); | |
1416 | free(content); | |
1417 | if (ret) { | |
1418 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1419 | goto end; | |
1420 | } | |
1421 | ||
1422 | attr->offset = offset; | |
1423 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1424 | config_element_symbol_name)) { | |
1425 | xmlChar *content; | |
1426 | size_t name_len; | |
1427 | ||
1428 | /* symbol_name */ | |
1429 | content = xmlNodeGetContent(probe_attribute_node); | |
1430 | if (!content) { | |
1431 | ret = -LTTNG_ERR_NOMEM; | |
1432 | goto end; | |
1433 | } | |
1434 | ||
1435 | name_len = strlen((char *) content); | |
1436 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1437 | WARN("symbol_name too long."); | |
1438 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1439 | free(content); | |
1440 | goto end; | |
1441 | } | |
1442 | ||
1443 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1444 | free(content); | |
1445 | } | |
1446 | ret = 0; | |
1447 | end: | |
1448 | return ret; | |
1449 | } | |
1450 | ||
1451 | static | |
1452 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1453 | const char *channel_name) | |
1454 | { | |
1455 | int ret, i; | |
1456 | xmlNodePtr node; | |
1457 | struct lttng_event event; | |
1458 | char **exclusions = NULL; | |
1459 | unsigned long exclusion_count = 0; | |
1460 | char *filter_expression = NULL; | |
1461 | ||
1462 | assert(event_node); | |
1463 | assert(handle); | |
1464 | assert(channel_name); | |
1465 | ||
1466 | memset(&event, 0, sizeof(event)); | |
1467 | ||
f40eba3d JG |
1468 | /* Initialize default log level which varies by domain */ |
1469 | switch (handle->domain.type) | |
1470 | { | |
1471 | case LTTNG_DOMAIN_JUL: | |
1472 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1473 | break; | |
1474 | case LTTNG_DOMAIN_LOG4J: | |
1475 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1476 | break; | |
1477 | case LTTNG_DOMAIN_PYTHON: | |
1478 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1479 | break; | |
1480 | case LTTNG_DOMAIN_UST: | |
1481 | case LTTNG_DOMAIN_KERNEL: | |
1482 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1483 | break; | |
1484 | default: | |
1485 | assert(0); | |
1486 | } | |
1487 | ||
dcf266c0 JG |
1488 | for (node = xmlFirstElementChild(event_node); node; |
1489 | node = xmlNextElementSibling(node)) { | |
1490 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1491 | xmlChar *content; | |
1492 | size_t name_len; | |
1493 | ||
1494 | /* name */ | |
1495 | content = xmlNodeGetContent(node); | |
1496 | if (!content) { | |
1497 | ret = -LTTNG_ERR_NOMEM; | |
1498 | goto end; | |
1499 | } | |
1500 | ||
1501 | name_len = strlen((char *) content); | |
1502 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1503 | WARN("Channel name too long."); | |
1504 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1505 | free(content); | |
1506 | goto end; | |
1507 | } | |
1508 | ||
1509 | strncpy(event.name, (const char *) content, name_len); | |
1510 | free(content); | |
1511 | } else if (!strcmp((const char *) node->name, | |
1512 | config_element_enabled)) { | |
1513 | xmlChar *content = xmlNodeGetContent(node); | |
1514 | ||
1515 | /* enabled */ | |
1516 | if (!content) { | |
1517 | ret = -LTTNG_ERR_NOMEM; | |
1518 | goto end; | |
1519 | } | |
1520 | ||
1521 | ret = parse_bool(content, &event.enabled); | |
1522 | free(content); | |
1523 | if (ret) { | |
1524 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1525 | goto end; | |
1526 | } | |
1527 | } else if (!strcmp((const char *) node->name, | |
1528 | config_element_type)) { | |
1529 | xmlChar *content = xmlNodeGetContent(node); | |
1530 | ||
1531 | /* type */ | |
1532 | if (!content) { | |
1533 | ret = -LTTNG_ERR_NOMEM; | |
1534 | goto end; | |
1535 | } | |
1536 | ||
1537 | ret = get_event_type(content); | |
1538 | free(content); | |
1539 | if (ret < 0) { | |
1540 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1541 | goto end; | |
1542 | } | |
1543 | ||
1544 | event.type = ret; | |
1545 | } else if (!strcmp((const char *) node->name, | |
1546 | config_element_loglevel_type)) { | |
1547 | xmlChar *content = xmlNodeGetContent(node); | |
1548 | ||
1549 | /* loglevel_type */ | |
1550 | if (!content) { | |
1551 | ret = -LTTNG_ERR_NOMEM; | |
1552 | goto end; | |
1553 | } | |
1554 | ||
1555 | ret = get_loglevel_type(content); | |
1556 | free(content); | |
1557 | if (ret < 0) { | |
1558 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1559 | goto end; | |
1560 | } | |
1561 | ||
1562 | event.loglevel_type = ret; | |
1563 | } else if (!strcmp((const char *) node->name, | |
1564 | config_element_loglevel)) { | |
1565 | xmlChar *content; | |
1566 | int64_t loglevel = 0; | |
1567 | ||
1568 | /* loglevel */ | |
1569 | content = xmlNodeGetContent(node); | |
1570 | if (!content) { | |
1571 | ret = -LTTNG_ERR_NOMEM; | |
1572 | goto end; | |
1573 | } | |
1574 | ||
1575 | ret = parse_int(content, &loglevel); | |
1576 | free(content); | |
1577 | if (ret) { | |
1578 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1579 | goto end; | |
1580 | } | |
1581 | ||
1582 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1583 | WARN("loglevel out of range."); | |
1584 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1585 | goto end; | |
1586 | } | |
1587 | ||
1588 | event.loglevel = loglevel; | |
1589 | } else if (!strcmp((const char *) node->name, | |
1590 | config_element_filter)) { | |
1591 | xmlChar *content = | |
1592 | xmlNodeGetContent(node); | |
1593 | ||
1594 | /* filter */ | |
1595 | if (!content) { | |
1596 | ret = -LTTNG_ERR_NOMEM; | |
1597 | goto end; | |
1598 | } | |
1599 | ||
1600 | filter_expression = strdup((char *) content); | |
1601 | free(content); | |
1602 | if (!filter_expression) { | |
1603 | ret = -LTTNG_ERR_NOMEM; | |
1604 | goto end; | |
1605 | } | |
1606 | } else if (!strcmp((const char *) node->name, | |
1607 | config_element_exclusions)) { | |
1608 | xmlNodePtr exclusion_node; | |
1609 | int exclusion_index = 0; | |
1610 | ||
1611 | /* exclusions */ | |
1612 | if (exclusions) { | |
1613 | /* | |
1614 | * Exclusions has already been initialized, | |
1615 | * invalid file. | |
1616 | */ | |
1617 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1618 | goto end; | |
1619 | } | |
1620 | ||
1621 | exclusion_count = xmlChildElementCount(node); | |
1622 | if (!exclusion_count) { | |
1623 | continue; | |
1624 | } | |
1625 | ||
1626 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1627 | if (!exclusions) { | |
1628 | exclusion_count = 0; | |
1629 | ret = -LTTNG_ERR_NOMEM; | |
1630 | goto end; | |
1631 | } | |
1632 | ||
1633 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1634 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1635 | xmlChar *content = | |
1636 | xmlNodeGetContent(exclusion_node); | |
1637 | ||
1638 | if (!content) { | |
1639 | ret = -LTTNG_ERR_NOMEM; | |
1640 | goto end; | |
1641 | } | |
1642 | ||
1643 | exclusions[exclusion_index] = strdup((const char *) content); | |
1644 | free(content); | |
1645 | if (!exclusions[exclusion_index]) { | |
1646 | ret = -LTTNG_ERR_NOMEM; | |
1647 | goto end; | |
1648 | } | |
1649 | exclusion_index++; | |
1650 | } | |
1651 | ||
1652 | event.exclusion = 1; | |
1653 | } else if (!strcmp((const char *) node->name, | |
1654 | config_element_attributes)) { | |
1655 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1656 | ||
1657 | /* attributes */ | |
1658 | if (!attribute_node) { | |
1659 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1660 | goto end; | |
1661 | } | |
1662 | ||
1663 | if (!strcmp((const char *) node->name, | |
1664 | config_element_probe_attributes)) { | |
1665 | xmlNodePtr probe_attribute_node; | |
1666 | ||
1667 | /* probe_attributes */ | |
1668 | for (probe_attribute_node = | |
1669 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1670 | probe_attribute_node = xmlNextElementSibling( | |
1671 | probe_attribute_node)) { | |
1672 | ||
1673 | ret = process_probe_attribute_node(probe_attribute_node, | |
1674 | &event.attr.probe); | |
1675 | if (ret) { | |
1676 | goto end; | |
1677 | } | |
1678 | } | |
1679 | } else { | |
1680 | size_t sym_len; | |
1681 | xmlChar *content; | |
1682 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1683 | ||
1684 | /* function_attributes */ | |
1685 | content = xmlNodeGetContent(symbol_node); | |
1686 | if (!content) { | |
1687 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1688 | goto end; | |
1689 | } | |
1690 | ||
1691 | sym_len = strlen((char *) content); | |
1692 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1693 | WARN("Function name too long."); | |
1694 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1695 | free(content); | |
1696 | goto end; | |
1697 | } | |
1698 | ||
1699 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1700 | sym_len); | |
1701 | free(content); | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1707 | filter_expression, exclusion_count, exclusions); | |
065321e9 JG |
1708 | if (ret) { |
1709 | goto end; | |
1710 | } | |
1711 | ||
1712 | if (!event.enabled) { | |
1713 | /* | |
1714 | * Note that we should use lttng_disable_event_ext() (2.6+) to | |
1715 | * eliminate the risk of clashing on events of the same | |
1716 | * name (with different event types and loglevels). | |
1717 | * | |
1718 | * Unfortunately, lttng_disable_event_ext() only performs a | |
1719 | * match on the name and event type and errors out if any other | |
1720 | * event attribute is not set to its default value. | |
1721 | * | |
1722 | * This will disable all events that match this name. | |
1723 | */ | |
1724 | ret = lttng_disable_event(handle, event.name, channel_name); | |
1725 | } | |
dcf266c0 JG |
1726 | end: |
1727 | for (i = 0; i < exclusion_count; i++) { | |
1728 | free(exclusions[i]); | |
1729 | } | |
1730 | ||
1731 | free(exclusions); | |
1732 | free(filter_expression); | |
1733 | return ret; | |
1734 | } | |
1735 | ||
1736 | static | |
1737 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1738 | const char *channel_name) | |
1739 | { | |
1740 | int ret = 0; | |
1741 | xmlNodePtr node; | |
1742 | ||
1743 | assert(events_node); | |
1744 | assert(handle); | |
1745 | assert(channel_name); | |
1746 | ||
1747 | for (node = xmlFirstElementChild(events_node); node; | |
1748 | node = xmlNextElementSibling(node)) { | |
1749 | ret = process_event_node(node, handle, channel_name); | |
1750 | if (ret) { | |
1751 | goto end; | |
1752 | } | |
1753 | } | |
1754 | end: | |
1755 | return ret; | |
1756 | } | |
1757 | ||
1758 | static | |
1759 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1760 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1761 | xmlNodePtr *events_node) | |
1762 | { | |
1763 | int ret; | |
1764 | ||
1765 | assert(attr_node); | |
1766 | assert(channel); | |
1767 | assert(contexts_node); | |
1768 | assert(events_node); | |
1769 | ||
1770 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1771 | xmlChar *content; | |
1772 | size_t name_len; | |
1773 | ||
1774 | /* name */ | |
1775 | content = xmlNodeGetContent(attr_node); | |
1776 | if (!content) { | |
1777 | ret = -LTTNG_ERR_NOMEM; | |
1778 | goto end; | |
1779 | } | |
1780 | ||
1781 | name_len = strlen((char *) content); | |
1782 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1783 | WARN("Channel name too long."); | |
1784 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1785 | free(content); | |
1786 | goto end; | |
1787 | } | |
1788 | ||
1789 | strncpy(channel->name, (const char *) content, name_len); | |
1790 | free(content); | |
1791 | } else if (!strcmp((const char *) attr_node->name, | |
1792 | config_element_enabled)) { | |
1793 | xmlChar *content; | |
1794 | int enabled; | |
1795 | ||
1796 | /* enabled */ | |
1797 | content = xmlNodeGetContent(attr_node); | |
1798 | if (!content) { | |
1799 | ret = -LTTNG_ERR_NOMEM; | |
1800 | goto end; | |
1801 | } | |
1802 | ||
1803 | ret = parse_bool(content, &enabled); | |
1804 | free(content); | |
1805 | if (ret) { | |
1806 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1807 | goto end; | |
1808 | } | |
1809 | ||
1810 | channel->enabled = enabled; | |
1811 | } else if (!strcmp((const char *) attr_node->name, | |
1812 | config_element_overwrite_mode)) { | |
1813 | xmlChar *content; | |
1814 | ||
1815 | /* overwrite_mode */ | |
1816 | content = xmlNodeGetContent(attr_node); | |
1817 | if (!content) { | |
1818 | ret = -LTTNG_ERR_NOMEM; | |
1819 | goto end; | |
1820 | } | |
1821 | ||
1822 | ret = get_overwrite_mode(content); | |
1823 | free(content); | |
1824 | if (ret < 0) { | |
1825 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1826 | goto end; | |
1827 | } | |
1828 | ||
1829 | channel->attr.overwrite = ret; | |
1830 | } else if (!strcmp((const char *) attr_node->name, | |
1831 | config_element_subbuf_size)) { | |
1832 | xmlChar *content; | |
1833 | ||
1834 | /* subbuffer_size */ | |
1835 | content = xmlNodeGetContent(attr_node); | |
1836 | if (!content) { | |
1837 | ret = -LTTNG_ERR_NOMEM; | |
1838 | goto end; | |
1839 | } | |
1840 | ||
1841 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1842 | free(content); | |
1843 | if (ret) { | |
1844 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1845 | goto end; | |
1846 | } | |
1847 | } else if (!strcmp((const char *) attr_node->name, | |
1848 | config_element_num_subbuf)) { | |
1849 | xmlChar *content; | |
1850 | ||
1851 | /* subbuffer_count */ | |
1852 | content = xmlNodeGetContent(attr_node); | |
1853 | if (!content) { | |
1854 | ret = -LTTNG_ERR_NOMEM; | |
1855 | goto end; | |
1856 | } | |
1857 | ||
1858 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1859 | free(content); | |
1860 | if (ret) { | |
1861 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1862 | goto end; | |
1863 | } | |
1864 | } else if (!strcmp((const char *) attr_node->name, | |
1865 | config_element_switch_timer_interval)) { | |
1866 | xmlChar *content; | |
1867 | uint64_t switch_timer_interval = 0; | |
1868 | ||
1869 | /* switch_timer_interval */ | |
1870 | content = xmlNodeGetContent(attr_node); | |
1871 | if (!content) { | |
1872 | ret = -LTTNG_ERR_NOMEM; | |
1873 | goto end; | |
1874 | } | |
1875 | ||
1876 | ret = parse_uint(content, &switch_timer_interval); | |
1877 | free(content); | |
1878 | if (ret) { | |
1879 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1880 | goto end; | |
1881 | } | |
1882 | ||
1883 | if (switch_timer_interval > UINT_MAX) { | |
1884 | WARN("switch_timer_interval out of range."); | |
1885 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1886 | goto end; | |
1887 | } | |
1888 | ||
1889 | channel->attr.switch_timer_interval = | |
1890 | switch_timer_interval; | |
1891 | } else if (!strcmp((const char *) attr_node->name, | |
1892 | config_element_read_timer_interval)) { | |
1893 | xmlChar *content; | |
1894 | uint64_t read_timer_interval = 0; | |
1895 | ||
1896 | /* read_timer_interval */ | |
1897 | content = xmlNodeGetContent(attr_node); | |
1898 | if (!content) { | |
1899 | ret = -LTTNG_ERR_NOMEM; | |
1900 | goto end; | |
1901 | } | |
1902 | ||
1903 | ret = parse_uint(content, &read_timer_interval); | |
1904 | free(content); | |
1905 | if (ret) { | |
1906 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1907 | goto end; | |
1908 | } | |
1909 | ||
1910 | if (read_timer_interval > UINT_MAX) { | |
1911 | WARN("read_timer_interval out of range."); | |
1912 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1913 | goto end; | |
1914 | } | |
1915 | ||
1916 | channel->attr.read_timer_interval = | |
1917 | read_timer_interval; | |
1918 | } else if (!strcmp((const char *) attr_node->name, | |
1919 | config_element_output_type)) { | |
1920 | xmlChar *content; | |
1921 | ||
1922 | /* output_type */ | |
1923 | content = xmlNodeGetContent(attr_node); | |
1924 | if (!content) { | |
1925 | ret = -LTTNG_ERR_NOMEM; | |
1926 | goto end; | |
1927 | } | |
1928 | ||
1929 | ret = get_output_type(content); | |
1930 | free(content); | |
1931 | if (ret < 0) { | |
1932 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1933 | goto end; | |
1934 | } | |
1935 | ||
1936 | channel->attr.output = ret; | |
1937 | } else if (!strcmp((const char *) attr_node->name, | |
1938 | config_element_tracefile_size)) { | |
1939 | xmlChar *content; | |
1940 | ||
1941 | /* tracefile_size */ | |
1942 | content = xmlNodeGetContent(attr_node); | |
1943 | if (!content) { | |
1944 | ret = -LTTNG_ERR_NOMEM; | |
1945 | goto end; | |
1946 | } | |
1947 | ||
1948 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1949 | free(content); | |
1950 | if (ret) { | |
1951 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1952 | goto end; | |
1953 | } | |
1954 | } else if (!strcmp((const char *) attr_node->name, | |
1955 | config_element_tracefile_count)) { | |
1956 | xmlChar *content; | |
1957 | ||
1958 | /* tracefile_count */ | |
1959 | content = xmlNodeGetContent(attr_node); | |
1960 | if (!content) { | |
1961 | ret = -LTTNG_ERR_NOMEM; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
1965 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1966 | free(content); | |
1967 | if (ret) { | |
1968 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1969 | goto end; | |
1970 | } | |
1971 | } else if (!strcmp((const char *) attr_node->name, | |
1972 | config_element_live_timer_interval)) { | |
1973 | xmlChar *content; | |
1974 | uint64_t live_timer_interval = 0; | |
1975 | ||
1976 | /* live_timer_interval */ | |
1977 | content = xmlNodeGetContent(attr_node); | |
1978 | if (!content) { | |
1979 | ret = -LTTNG_ERR_NOMEM; | |
1980 | goto end; | |
1981 | } | |
1982 | ||
1983 | ret = parse_uint(content, &live_timer_interval); | |
1984 | free(content); | |
1985 | if (ret) { | |
1986 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1987 | goto end; | |
1988 | } | |
1989 | ||
1990 | if (live_timer_interval > UINT_MAX) { | |
1991 | WARN("live_timer_interval out of range."); | |
1992 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1993 | goto end; | |
1994 | } | |
1995 | ||
1996 | channel->attr.live_timer_interval = | |
1997 | live_timer_interval; | |
1998 | } else if (!strcmp((const char *) attr_node->name, | |
1999 | config_element_events)) { | |
2000 | /* events */ | |
2001 | *events_node = attr_node; | |
2002 | } else { | |
2003 | /* contexts */ | |
2004 | *contexts_node = attr_node; | |
2005 | } | |
2006 | ret = 0; | |
2007 | end: | |
2008 | return ret; | |
2009 | } | |
2010 | ||
2011 | static | |
2012 | int process_context_node(xmlNodePtr context_node, | |
2013 | struct lttng_handle *handle, const char *channel_name) | |
2014 | { | |
2015 | int ret; | |
2016 | struct lttng_event_context context; | |
2017 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2018 | ||
2019 | assert(handle); | |
2020 | assert(channel_name); | |
2021 | ||
2022 | if (!context_child_node) { | |
2023 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2024 | goto end; | |
2025 | } | |
2026 | ||
2027 | memset(&context, 0, sizeof(context)); | |
2028 | ||
2029 | if (!strcmp((const char *) context_child_node->name, | |
2030 | config_element_type)) { | |
2031 | /* type */ | |
2032 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2033 | |
dcf266c0 JG |
2034 | if (!content) { |
2035 | ret = -LTTNG_ERR_NOMEM; | |
2036 | goto end; | |
2037 | } | |
2038 | ||
2039 | ret = get_context_type(content); | |
2040 | free(content); | |
2041 | if (ret < 0) { | |
2042 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2043 | goto end; | |
2044 | } | |
2045 | ||
2046 | context.ctx = ret; | |
045fc617 JG |
2047 | } else if (!strcmp((const char *) context_child_node->name, |
2048 | config_element_context_perf)) { | |
2049 | /* perf */ | |
dcf266c0 JG |
2050 | xmlNodePtr perf_attr_node; |
2051 | ||
14ce5bd8 JG |
2052 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2053 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2054 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2055 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2056 | perf_attr_node; perf_attr_node = | |
2057 | xmlNextElementSibling(perf_attr_node)) { | |
2058 | if (!strcmp((const char *) perf_attr_node->name, | |
2059 | config_element_type)) { | |
2060 | xmlChar *content; | |
2061 | uint64_t type = 0; | |
2062 | ||
2063 | /* type */ | |
2064 | content = xmlNodeGetContent(perf_attr_node); | |
2065 | if (!content) { | |
2066 | ret = -LTTNG_ERR_NOMEM; | |
2067 | goto end; | |
2068 | } | |
2069 | ||
2070 | ret = parse_uint(content, &type); | |
2071 | free(content); | |
2072 | if (ret) { | |
2073 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2074 | goto end; | |
2075 | } | |
2076 | ||
2077 | if (type > UINT32_MAX) { | |
2078 | WARN("perf context type out of range."); | |
2079 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2080 | goto end; | |
2081 | } | |
2082 | ||
2083 | context.u.perf_counter.type = type; | |
2084 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2085 | config_element_config)) { | |
2086 | xmlChar *content; | |
2087 | uint64_t config = 0; | |
2088 | ||
2089 | /* config */ | |
2090 | content = xmlNodeGetContent(perf_attr_node); | |
2091 | if (!content) { | |
2092 | ret = -LTTNG_ERR_NOMEM; | |
2093 | goto end; | |
2094 | } | |
2095 | ||
2096 | ret = parse_uint(content, &config); | |
2097 | free(content); | |
2098 | if (ret) { | |
2099 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2100 | goto end; | |
2101 | } | |
2102 | ||
2103 | context.u.perf_counter.config = config; | |
2104 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2105 | config_element_name)) { | |
2106 | xmlChar *content; | |
2107 | size_t name_len; | |
2108 | ||
2109 | /* name */ | |
2110 | content = xmlNodeGetContent(perf_attr_node); | |
2111 | if (!content) { | |
2112 | ret = -LTTNG_ERR_NOMEM; | |
2113 | goto end; | |
2114 | } | |
2115 | ||
2116 | name_len = strlen((char *) content); | |
2117 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2118 | WARN("perf context name too long."); | |
2119 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2120 | free(content); | |
2121 | goto end; | |
2122 | } | |
2123 | ||
2124 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2125 | name_len); | |
2126 | free(content); | |
2127 | } | |
2128 | } | |
045fc617 JG |
2129 | } else if (!strcmp((const char *) context_child_node->name, |
2130 | config_element_context_app)) { | |
2131 | /* application context */ | |
2132 | xmlNodePtr app_ctx_node; | |
2133 | ||
2134 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2135 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2136 | app_ctx_node; app_ctx_node = | |
2137 | xmlNextElementSibling(app_ctx_node)) { | |
2138 | xmlChar *content; | |
2139 | char **target = strcmp( | |
2140 | (const char *) app_ctx_node->name, | |
2141 | config_element_context_app_provider_name) == 0 ? | |
2142 | &context.u.app_ctx.provider_name : | |
2143 | &context.u.app_ctx.ctx_name; | |
2144 | ||
2145 | content = xmlNodeGetContent(app_ctx_node); | |
2146 | if (!content) { | |
2147 | ret = -LTTNG_ERR_NOMEM; | |
2148 | goto end; | |
2149 | } | |
2150 | ||
2151 | *target = (char *) content; | |
2152 | } | |
2153 | } else { | |
2154 | /* Unrecognized context type */ | |
2155 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2156 | goto end; | |
dcf266c0 JG |
2157 | } |
2158 | ||
2159 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2160 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2161 | free(context.u.app_ctx.provider_name); | |
2162 | free(context.u.app_ctx.ctx_name); | |
2163 | } | |
dcf266c0 JG |
2164 | end: |
2165 | return ret; | |
2166 | } | |
2167 | ||
2168 | static | |
2169 | int process_contexts_node(xmlNodePtr contexts_node, | |
2170 | struct lttng_handle *handle, const char *channel_name) | |
2171 | { | |
2172 | int ret = 0; | |
2173 | xmlNodePtr context_node; | |
2174 | ||
2175 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2176 | context_node = xmlNextElementSibling(context_node)) { | |
2177 | ret = process_context_node(context_node, handle, channel_name); | |
2178 | if (ret) { | |
2179 | goto end; | |
2180 | } | |
2181 | } | |
2182 | end: | |
2183 | return ret; | |
2184 | } | |
2185 | ||
847a5916 JR |
2186 | static |
2187 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2188 | struct lttng_handle *handle) | |
2189 | { | |
dd49e13f | 2190 | int ret = 0, child; |
847a5916 JR |
2191 | xmlNodePtr targets_node = NULL; |
2192 | xmlNodePtr node; | |
2193 | ||
2194 | assert(handle); | |
2195 | assert(pid_tracker_node); | |
2196 | /* get the targets node */ | |
2197 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2198 | node = xmlNextElementSibling(node)) { | |
2199 | if (!strcmp((const char *) node->name, | |
2200 | config_element_targets)) { | |
2201 | targets_node = node; | |
2202 | break; | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | if (!targets_node) { | |
2207 | ret = LTTNG_ERR_INVALID; | |
2208 | goto end; | |
2209 | } | |
2210 | ||
2211 | /* Go through all pid_target node */ | |
2212 | child = xmlChildElementCount(targets_node); | |
2213 | if (child == 0) { | |
2214 | /* The session is explicitly set to target nothing. */ | |
2215 | ret = lttng_untrack_pid(handle, -1); | |
2216 | if (ret) { | |
2217 | goto end; | |
2218 | } | |
2219 | } | |
2220 | for (node = xmlFirstElementChild(targets_node); node; | |
2221 | node = xmlNextElementSibling(node)) { | |
2222 | xmlNodePtr pid_target_node = node; | |
2223 | ||
2224 | /* get pid node and track it */ | |
2225 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2226 | node = xmlNextElementSibling(node)) { | |
2227 | if (!strcmp((const char *) node->name, | |
2228 | config_element_pid)) { | |
2229 | int64_t pid; | |
2230 | xmlChar *content = NULL; | |
2231 | ||
2232 | content = xmlNodeGetContent(node); | |
2233 | if (!content) { | |
2234 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2235 | goto end; | |
2236 | } | |
2237 | ||
2238 | ret = parse_int(content, &pid); | |
2239 | free(content); | |
2240 | if (ret) { | |
2241 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2242 | goto end; | |
2243 | } | |
2244 | ||
2245 | ret = lttng_track_pid(handle, (int) pid); | |
2246 | if (ret) { | |
2247 | goto end; | |
2248 | } | |
2249 | } | |
2250 | } | |
2251 | node = pid_target_node; | |
2252 | } | |
2253 | ||
2254 | end: | |
2255 | return ret; | |
2256 | } | |
2257 | ||
2258 | ||
dcf266c0 JG |
2259 | static |
2260 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2261 | { | |
2262 | int ret; | |
2263 | struct lttng_domain domain = { 0 }; | |
2264 | struct lttng_handle *handle = NULL; | |
2265 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2266 | xmlNodePtr trackers_node = NULL; |
2267 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2268 | xmlNodePtr node; |
2269 | ||
2270 | assert(session_name); | |
2271 | ||
2272 | ret = init_domain(domain_node, &domain); | |
2273 | if (ret) { | |
2274 | goto end; | |
2275 | } | |
2276 | ||
2277 | handle = lttng_create_handle(session_name, &domain); | |
2278 | if (!handle) { | |
2279 | ret = -LTTNG_ERR_NOMEM; | |
2280 | goto end; | |
2281 | } | |
2282 | ||
2283 | /* get the channels node */ | |
2284 | for (node = xmlFirstElementChild(domain_node); node; | |
2285 | node = xmlNextElementSibling(node)) { | |
2286 | if (!strcmp((const char *) node->name, | |
2287 | config_element_channels)) { | |
2288 | channels_node = node; | |
2289 | break; | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | if (!channels_node) { | |
2294 | goto end; | |
2295 | } | |
2296 | ||
2297 | /* create all channels */ | |
2298 | for (node = xmlFirstElementChild(channels_node); node; | |
2299 | node = xmlNextElementSibling(node)) { | |
2300 | struct lttng_channel channel; | |
2301 | xmlNodePtr contexts_node = NULL; | |
2302 | xmlNodePtr events_node = NULL; | |
2303 | xmlNodePtr channel_attr_node; | |
2304 | ||
2305 | memset(&channel, 0, sizeof(channel)); | |
2306 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2307 | ||
2308 | for (channel_attr_node = xmlFirstElementChild(node); | |
2309 | channel_attr_node; channel_attr_node = | |
2310 | xmlNextElementSibling(channel_attr_node)) { | |
2311 | ret = process_channel_attr_node(channel_attr_node, | |
2312 | &channel, &contexts_node, &events_node); | |
2313 | if (ret) { | |
2314 | goto end; | |
2315 | } | |
2316 | } | |
2317 | ||
2318 | ret = lttng_enable_channel(handle, &channel); | |
2319 | if (ret < 0) { | |
2320 | goto end; | |
2321 | } | |
2322 | ||
2323 | ret = process_events_node(events_node, handle, channel.name); | |
2324 | if (ret) { | |
2325 | goto end; | |
2326 | } | |
2327 | ||
2328 | ret = process_contexts_node(contexts_node, handle, | |
2329 | channel.name); | |
2330 | if (ret) { | |
2331 | goto end; | |
2332 | } | |
2333 | } | |
847a5916 JR |
2334 | |
2335 | /* get the trackers node */ | |
2336 | for (node = xmlFirstElementChild(domain_node); node; | |
2337 | node = xmlNextElementSibling(node)) { | |
2338 | if (!strcmp((const char *) node->name, | |
2339 | config_element_trackers)) { | |
2340 | trackers_node = node; | |
2341 | break; | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | if (!trackers_node) { | |
2346 | goto end; | |
2347 | } | |
2348 | ||
2349 | for (node = xmlFirstElementChild(trackers_node); node; | |
2350 | node = xmlNextElementSibling(node)) { | |
2351 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2352 | pid_tracker_node = node; | |
2353 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2354 | if (ret) { | |
2355 | goto end; | |
2356 | } | |
2357 | } | |
2358 | } | |
2359 | ||
2360 | if (!pid_tracker_node) { | |
2361 | lttng_track_pid(handle, -1); | |
2362 | } | |
2363 | ||
dcf266c0 JG |
2364 | end: |
2365 | lttng_destroy_handle(handle); | |
2366 | return ret; | |
2367 | } | |
2368 | ||
2369 | static | |
2370 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2371 | int override) | |
2372 | { | |
2373 | int ret, started = -1, snapshot_mode = -1; | |
2374 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2375 | xmlChar *name = NULL; |
9e7c9f56 | 2376 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2377 | xmlNodePtr domains_node = NULL; |
2378 | xmlNodePtr output_node = NULL; | |
2379 | xmlNodePtr node; | |
2380 | struct lttng_domain *kernel_domain = NULL; | |
2381 | struct lttng_domain *ust_domain = NULL; | |
2382 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2383 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2384 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2385 | |
2386 | for (node = xmlFirstElementChild(session_node); node; | |
2387 | node = xmlNextElementSibling(node)) { | |
2388 | if (!name && !strcmp((const char *) node->name, | |
2389 | config_element_name)) { | |
2390 | /* name */ | |
2391 | xmlChar *node_content = xmlNodeGetContent(node); | |
2392 | if (!node_content) { | |
2393 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2394 | goto error; |
dcf266c0 JG |
2395 | } |
2396 | ||
d324faf7 | 2397 | name = node_content; |
dcf266c0 JG |
2398 | } else if (!domains_node && !strcmp((const char *) node->name, |
2399 | config_element_domains)) { | |
2400 | /* domains */ | |
2401 | domains_node = node; | |
2402 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2403 | config_element_started)) { | |
2404 | /* started */ | |
2405 | xmlChar *node_content = xmlNodeGetContent(node); | |
2406 | if (!node_content) { | |
2407 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2408 | goto error; |
dcf266c0 JG |
2409 | } |
2410 | ||
2411 | ret = parse_bool(node_content, &started); | |
2412 | free(node_content); | |
2413 | if (ret) { | |
2414 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2415 | goto error; |
dcf266c0 JG |
2416 | } |
2417 | } else if (!output_node && !strcmp((const char *) node->name, | |
2418 | config_element_output)) { | |
2419 | /* output */ | |
2420 | output_node = node; | |
9e7c9f56 JR |
2421 | } else if (!shm_path && !strcmp((const char *) node->name, |
2422 | config_element_shared_memory_path)) { | |
2423 | /* shared memory path */ | |
2424 | xmlChar *node_content = xmlNodeGetContent(node); | |
2425 | if (!node_content) { | |
2426 | ret = -LTTNG_ERR_NOMEM; | |
2427 | goto error; | |
2428 | } | |
2429 | ||
2430 | shm_path = node_content; | |
dcf266c0 JG |
2431 | } else { |
2432 | /* attributes, snapshot_mode or live_timer_interval */ | |
2433 | xmlNodePtr attributes_child = | |
2434 | xmlFirstElementChild(node); | |
2435 | ||
2436 | if (!strcmp((const char *) attributes_child->name, | |
2437 | config_element_snapshot_mode)) { | |
2438 | /* snapshot_mode */ | |
2439 | xmlChar *snapshot_mode_content = | |
2440 | xmlNodeGetContent(attributes_child); | |
2441 | if (!snapshot_mode_content) { | |
2442 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2443 | goto error; |
dcf266c0 JG |
2444 | } |
2445 | ||
2446 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2447 | free(snapshot_mode_content); | |
2448 | if (ret) { | |
2449 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2450 | goto error; |
dcf266c0 JG |
2451 | } |
2452 | } else { | |
2453 | /* live_timer_interval */ | |
2454 | xmlChar *timer_interval_content = | |
2455 | xmlNodeGetContent(attributes_child); | |
2456 | if (!timer_interval_content) { | |
2457 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2458 | goto error; |
dcf266c0 JG |
2459 | } |
2460 | ||
2461 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2462 | free(timer_interval_content); | |
2463 | if (ret) { | |
2464 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2465 | goto error; |
dcf266c0 JG |
2466 | } |
2467 | } | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | if (!name) { | |
2472 | /* Mandatory attribute, as defined in the session XSD */ | |
2473 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2474 | goto error; |
dcf266c0 JG |
2475 | } |
2476 | ||
d324faf7 | 2477 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2478 | /* This is not the session we are looking for */ |
c2da8cde DG |
2479 | ret = -LTTNG_ERR_NO_SESSION; |
2480 | goto error; | |
dcf266c0 JG |
2481 | } |
2482 | ||
2483 | /* Init domains to create the session handles */ | |
2484 | for (node = xmlFirstElementChild(domains_node); node; | |
2485 | node = xmlNextElementSibling(node)) { | |
2486 | struct lttng_domain *domain; | |
2487 | ||
2488 | domain = zmalloc(sizeof(*domain)); | |
2489 | if (!domain) { | |
2490 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2491 | goto error; |
dcf266c0 JG |
2492 | } |
2493 | ||
2494 | ret = init_domain(node, domain); | |
2495 | if (ret) { | |
2496 | goto domain_init_error; | |
2497 | } | |
2498 | ||
2499 | switch (domain->type) { | |
2500 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2501 | if (kernel_domain) { |
2502 | /* Same domain seen twice, invalid! */ | |
2503 | goto domain_init_error; | |
2504 | } | |
dcf266c0 JG |
2505 | kernel_domain = domain; |
2506 | break; | |
2507 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2508 | if (ust_domain) { |
2509 | /* Same domain seen twice, invalid! */ | |
2510 | goto domain_init_error; | |
2511 | } | |
dcf266c0 JG |
2512 | ust_domain = domain; |
2513 | break; | |
2514 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2515 | if (jul_domain) { |
2516 | /* Same domain seen twice, invalid! */ | |
2517 | goto domain_init_error; | |
2518 | } | |
dcf266c0 JG |
2519 | jul_domain = domain; |
2520 | break; | |
5cdb6027 DG |
2521 | case LTTNG_DOMAIN_LOG4J: |
2522 | if (log4j_domain) { | |
2523 | /* Same domain seen twice, invalid! */ | |
2524 | goto domain_init_error; | |
2525 | } | |
2526 | log4j_domain = domain; | |
2527 | break; | |
0e115563 DG |
2528 | case LTTNG_DOMAIN_PYTHON: |
2529 | if (python_domain) { | |
2530 | /* Same domain seen twice, invalid! */ | |
2531 | goto domain_init_error; | |
2532 | } | |
2533 | python_domain = domain; | |
2534 | break; | |
dcf266c0 JG |
2535 | default: |
2536 | WARN("Invalid domain type"); | |
2537 | goto domain_init_error; | |
2538 | } | |
2539 | continue; | |
2540 | domain_init_error: | |
2541 | free(domain); | |
2542 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2543 | goto error; |
dcf266c0 JG |
2544 | } |
2545 | ||
2546 | if (override) { | |
2547 | /* Destroy session if it exists */ | |
d324faf7 | 2548 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2549 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2550 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2551 | goto error; |
dcf266c0 JG |
2552 | } |
2553 | } | |
2554 | ||
2555 | /* Create session type depending on output type */ | |
2556 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2557 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2558 | } else if (live_timer_interval && |
2559 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2560 | ret = create_session((const char *) name, kernel_domain, |
2561 | ust_domain, jul_domain, log4j_domain, | |
2562 | output_node, live_timer_interval); | |
dcf266c0 JG |
2563 | } else { |
2564 | /* regular session */ | |
d324faf7 JG |
2565 | ret = create_session((const char *) name, kernel_domain, |
2566 | ust_domain, jul_domain, log4j_domain, | |
2567 | output_node, UINT64_MAX); | |
dcf266c0 | 2568 | } |
dcf266c0 | 2569 | if (ret) { |
c2da8cde | 2570 | goto error; |
dcf266c0 JG |
2571 | } |
2572 | ||
9e7c9f56 JR |
2573 | if (shm_path) { |
2574 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2575 | (const char *) shm_path); |
9e7c9f56 JR |
2576 | if (ret) { |
2577 | goto error; | |
2578 | } | |
2579 | } | |
2580 | ||
dcf266c0 JG |
2581 | for (node = xmlFirstElementChild(domains_node); node; |
2582 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2583 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2584 | if (ret) { |
2585 | goto end; | |
2586 | } | |
2587 | } | |
2588 | ||
2589 | if (started) { | |
d324faf7 | 2590 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2591 | if (ret) { |
2592 | goto end; | |
2593 | } | |
2594 | } | |
c2da8cde | 2595 | |
dcf266c0 | 2596 | end: |
b2579dc1 | 2597 | if (ret < 0) { |
d324faf7 JG |
2598 | ERR("Failed to load session %s: %s", (const char *) name, |
2599 | lttng_strerror(ret)); | |
2600 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2601 | } |
2602 | ||
c2da8cde | 2603 | error: |
dcf266c0 JG |
2604 | free(kernel_domain); |
2605 | free(ust_domain); | |
2606 | free(jul_domain); | |
5cdb6027 | 2607 | free(log4j_domain); |
135a3893 | 2608 | free(python_domain); |
d324faf7 | 2609 | xmlFree(name); |
9e7c9f56 | 2610 | xmlFree(shm_path); |
dcf266c0 JG |
2611 | return ret; |
2612 | } | |
2613 | ||
cf53c06d DG |
2614 | /* |
2615 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2616 | * Return -1 if the path is EPERM. | |
2617 | */ | |
2618 | static int validate_file_read_creds(const char *path) | |
2619 | { | |
2620 | int ret; | |
2621 | ||
2622 | assert(path); | |
2623 | ||
2624 | /* Can we read the file. */ | |
2625 | ret = access(path, R_OK); | |
2626 | if (!ret) { | |
2627 | goto valid; | |
2628 | } | |
2629 | if (errno == EACCES) { | |
2630 | return -1; | |
2631 | } else { | |
2632 | /* Invalid. */ | |
2633 | return 0; | |
2634 | } | |
2635 | valid: | |
2636 | return 1; | |
2637 | } | |
2638 | ||
dcf266c0 JG |
2639 | static |
2640 | int load_session_from_file(const char *path, const char *session_name, | |
2641 | struct session_config_validation_ctx *validation_ctx, int override) | |
2642 | { | |
2643 | int ret, session_found = !session_name; | |
2644 | xmlDocPtr doc = NULL; | |
2645 | xmlNodePtr sessions_node; | |
2646 | xmlNodePtr session_node; | |
dcf266c0 JG |
2647 | |
2648 | assert(path); | |
2649 | assert(validation_ctx); | |
2650 | ||
cf53c06d DG |
2651 | ret = validate_file_read_creds(path); |
2652 | if (ret != 1) { | |
2653 | if (ret == -1) { | |
2654 | ret = -LTTNG_ERR_EPERM; | |
2655 | } else { | |
2656 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2657 | } | |
dcf266c0 JG |
2658 | goto end; |
2659 | } | |
2660 | ||
2661 | doc = xmlParseFile(path); | |
2662 | if (!doc) { | |
2663 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2664 | goto end; | |
2665 | } | |
2666 | ||
2667 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2668 | if (ret) { | |
2669 | ERR("Session configuration file validation failed"); | |
2670 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2671 | goto end; | |
2672 | } | |
2673 | ||
2674 | sessions_node = xmlDocGetRootElement(doc); | |
2675 | if (!sessions_node) { | |
2676 | goto end; | |
2677 | } | |
2678 | ||
2679 | for (session_node = xmlFirstElementChild(sessions_node); | |
2680 | session_node; session_node = | |
2681 | xmlNextElementSibling(session_node)) { | |
2682 | ret = process_session_node(session_node, | |
2683 | session_name, override); | |
2684 | if (session_name && ret == 0) { | |
2685 | /* Target session found and loaded */ | |
2686 | session_found = 1; | |
2687 | break; | |
2688 | } | |
2689 | } | |
2690 | end: | |
2691 | xmlFreeDoc(doc); | |
2692 | if (!ret) { | |
a96bc65d | 2693 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2694 | } |
2695 | return ret; | |
2696 | } | |
2697 | ||
60f70355 JG |
2698 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2699 | static | |
2700 | struct dirent *alloc_dirent(const char *path) | |
2701 | { | |
2702 | size_t len; | |
2703 | long name_max; | |
2704 | struct dirent *entry; | |
2705 | ||
2706 | name_max = pathconf(path, _PC_NAME_MAX); | |
2707 | if (name_max == -1) { | |
2708 | name_max = PATH_MAX; | |
2709 | } | |
2710 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2711 | entry = zmalloc(len); | |
2712 | return entry; | |
2713 | } | |
2714 | ||
dcf266c0 JG |
2715 | static |
2716 | int load_session_from_path(const char *path, const char *session_name, | |
2717 | struct session_config_validation_ctx *validation_ctx, int override) | |
2718 | { | |
2719 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2720 | DIR *directory = NULL; |
2721 | ||
2722 | assert(path); | |
2723 | assert(validation_ctx); | |
2724 | ||
4af16958 DG |
2725 | directory = opendir(path); |
2726 | if (!directory) { | |
11143783 DG |
2727 | switch (errno) { |
2728 | case ENOTDIR: | |
0f0a81b5 DG |
2729 | /* Try the file loading. */ |
2730 | break; | |
11143783 DG |
2731 | case ENOENT: |
2732 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2733 | goto end; | |
2734 | default: | |
0f0a81b5 DG |
2735 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2736 | goto end; | |
4af16958 | 2737 | } |
dcf266c0 | 2738 | } |
4af16958 | 2739 | if (directory) { |
dcf266c0 JG |
2740 | struct dirent *entry; |
2741 | struct dirent *result; | |
2742 | char *file_path = NULL; | |
2743 | size_t path_len = strlen(path); | |
2744 | ||
2745 | if (path_len >= PATH_MAX) { | |
2746 | ret = -LTTNG_ERR_INVALID; | |
2747 | goto end; | |
2748 | } | |
2749 | ||
60f70355 | 2750 | entry = alloc_dirent(path); |
dcf266c0 JG |
2751 | if (!entry) { |
2752 | ret = -LTTNG_ERR_NOMEM; | |
2753 | goto end; | |
2754 | } | |
2755 | ||
dcf266c0 JG |
2756 | file_path = zmalloc(PATH_MAX); |
2757 | if (!file_path) { | |
2758 | ret = -LTTNG_ERR_NOMEM; | |
2759 | free(entry); | |
2760 | goto end; | |
2761 | } | |
2762 | ||
2763 | strncpy(file_path, path, path_len); | |
2764 | if (file_path[path_len - 1] != '/') { | |
2765 | file_path[path_len++] = '/'; | |
2766 | } | |
2767 | ||
4af16958 | 2768 | ret = 0; |
dcf266c0 JG |
2769 | /* Search for *.lttng files */ |
2770 | while (!readdir_r(directory, entry, &result) && result) { | |
2771 | size_t file_name_len = strlen(result->d_name); | |
2772 | ||
2773 | if (file_name_len <= | |
2774 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2775 | continue; | |
2776 | } | |
2777 | ||
431f702e | 2778 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2779 | continue; |
2780 | } | |
2781 | ||
2782 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2783 | result->d_name + file_name_len - sizeof( | |
2784 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2785 | continue; | |
2786 | } | |
2787 | ||
2788 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2789 | file_path[path_len + file_name_len] = '\0'; | |
2790 | ||
2791 | ret = load_session_from_file(file_path, session_name, | |
2792 | validation_ctx, override); | |
2793 | if (session_name && !ret) { | |
2794 | session_found = 1; | |
2795 | break; | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | free(entry); | |
2800 | free(file_path); | |
2801 | } else { | |
2802 | ret = load_session_from_file(path, session_name, | |
2803 | validation_ctx, override); | |
2804 | if (ret) { | |
2805 | goto end; | |
2806 | } else { | |
2807 | session_found = 1; | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | end: | |
2812 | if (directory) { | |
2813 | if (closedir(directory)) { | |
2814 | PERROR("closedir"); | |
2815 | } | |
2816 | } | |
2817 | ||
2818 | if (!session_found) { | |
a96bc65d | 2819 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2820 | } |
2821 | ||
2822 | return ret; | |
2823 | } | |
2824 | ||
ab38c13f DG |
2825 | /* |
2826 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2827 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2828 | */ |
2829 | static int validate_path_creds(const char *path) | |
2830 | { | |
2831 | int ret, uid = getuid(); | |
2832 | struct stat buf; | |
2833 | ||
2834 | assert(path); | |
2835 | ||
cf53c06d | 2836 | if (uid == 0) { |
ab38c13f DG |
2837 | goto valid; |
2838 | } | |
2839 | ||
2840 | ret = stat(path, &buf); | |
2841 | if (ret < 0) { | |
2842 | if (errno != ENOENT) { | |
2843 | PERROR("stat"); | |
2844 | } | |
2845 | ret = -LTTNG_ERR_INVALID; | |
2846 | goto valid; | |
2847 | } | |
2848 | ||
2849 | if (buf.st_uid != uid) { | |
2850 | goto invalid; | |
2851 | } | |
2852 | ||
2853 | valid: | |
ab38c13f | 2854 | return 1; |
cf53c06d DG |
2855 | invalid: |
2856 | return 0; | |
ab38c13f DG |
2857 | } |
2858 | ||
dcf266c0 JG |
2859 | LTTNG_HIDDEN |
2860 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2861 | int override, unsigned int autoload) |
dcf266c0 JG |
2862 | { |
2863 | int ret; | |
cf53c06d | 2864 | const char *path_ptr = NULL; |
dcf266c0 JG |
2865 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2866 | ||
2867 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2868 | if (ret) { | |
2869 | goto end; | |
2870 | } | |
2871 | ||
2872 | if (!path) { | |
ab38c13f DG |
2873 | char *home_path; |
2874 | const char *sys_path; | |
2875 | ||
dcf266c0 | 2876 | /* Try home path */ |
ab38c13f | 2877 | home_path = utils_get_home_dir(); |
dcf266c0 | 2878 | if (home_path) { |
ab38c13f | 2879 | char path[PATH_MAX]; |
dcf266c0 | 2880 | |
d4fcf703 DG |
2881 | /* |
2882 | * Try user session configuration path. Ignore error here so we can | |
2883 | * continue loading the system wide sessions. | |
2884 | */ | |
ab38c13f DG |
2885 | if (autoload) { |
2886 | ret = snprintf(path, sizeof(path), | |
2887 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2888 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2889 | if (ret < 0) { |
2890 | PERROR("snprintf session autoload home config path"); | |
2891 | goto end; | |
2892 | } | |
2893 | ||
2894 | /* | |
2895 | * Credentials are only validated for the autoload in order to | |
2896 | * avoid any user session daemon to try to load kernel sessions | |
2897 | * automatically and failing all the times. | |
2898 | */ | |
2899 | ret = validate_path_creds(path); | |
2900 | if (ret) { | |
2901 | path_ptr = path; | |
2902 | } | |
ab38c13f DG |
2903 | } else { |
2904 | ret = snprintf(path, sizeof(path), | |
2905 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2906 | if (ret < 0) { |
2907 | PERROR("snprintf session home config path"); | |
2908 | goto end; | |
2909 | } | |
2910 | path_ptr = path; | |
ab38c13f | 2911 | } |
cf53c06d DG |
2912 | if (path_ptr) { |
2913 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2914 | &validation_ctx, override); |
2915 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2916 | goto end; | |
2917 | } | |
2918 | /* | |
2919 | * Continue even if the session was found since we have to try | |
2920 | * the system wide sessions. | |
2921 | */ | |
ab38c13f | 2922 | } |
d4fcf703 | 2923 | } |
ab38c13f | 2924 | |
cf53c06d DG |
2925 | /* Reset path pointer for the system wide dir. */ |
2926 | path_ptr = NULL; | |
2927 | ||
d4fcf703 DG |
2928 | /* Try system wide configuration directory. */ |
2929 | if (autoload) { | |
2930 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2931 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2932 | ret = validate_path_creds(sys_path); |
2933 | if (ret) { | |
2934 | path_ptr = sys_path; | |
2935 | } | |
d4fcf703 | 2936 | } else { |
cf53c06d DG |
2937 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2938 | path_ptr = sys_path; | |
d4fcf703 DG |
2939 | } |
2940 | ||
cf53c06d DG |
2941 | if (path_ptr) { |
2942 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2943 | &validation_ctx, override); |
dcf266c0 JG |
2944 | } |
2945 | } else { | |
2946 | ret = access(path, F_OK); | |
2947 | if (ret < 0) { | |
2948 | PERROR("access"); | |
2949 | switch (errno) { | |
2950 | case ENOENT: | |
2951 | ret = -LTTNG_ERR_INVALID; | |
2952 | WARN("Session configuration path does not exist."); | |
2953 | break; | |
2954 | case EACCES: | |
2955 | ret = -LTTNG_ERR_EPERM; | |
2956 | break; | |
2957 | default: | |
2958 | ret = -LTTNG_ERR_UNK; | |
2959 | break; | |
2960 | } | |
2961 | goto end; | |
2962 | } | |
2963 | ||
2964 | ret = load_session_from_path(path, session_name, | |
2965 | &validation_ctx, override); | |
2966 | } | |
2967 | end: | |
2968 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2969 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2970 | /* | |
2971 | * Don't report an error if no sessions are found when called | |
2972 | * without a session_name or a search path. | |
2973 | */ | |
2974 | ret = 0; | |
2975 | } | |
dcf266c0 JG |
2976 | return ret; |
2977 | } |