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"; | |
ec2ed7da JG |
98 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
99 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
100 | const char * const config_element_type = "type"; |
101 | const char * const config_element_buffer_type = "buffer_type"; | |
102 | const char * const config_element_session = "session"; | |
103 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
104 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
105 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
106 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
107 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
108 | const char * const config_element_config = "config"; |
109 | const char * const config_element_started = "started"; | |
110 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
111 | const char * const config_element_loglevel = "loglevel"; | |
112 | const char * const config_element_loglevel_type = "loglevel_type"; | |
113 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 114 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
115 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
116 | const char * const config_element_consumer_output = "consumer_output"; | |
117 | const char * const config_element_destination = "destination"; | |
118 | const char * const config_element_path = "path"; | |
119 | const char * const config_element_net_output = "net_output"; | |
120 | const char * const config_element_control_uri = "control_uri"; | |
121 | const char * const config_element_data_uri = "data_uri"; | |
122 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
123 | const char * const config_element_pid = "pid"; |
124 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 125 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
126 | const char * const config_element_pid_tracker = "pid_tracker"; |
127 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
128 | const char * const config_element_targets = "targets"; |
129 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
130 | |
131 | const char * const config_domain_type_kernel = "KERNEL"; | |
132 | const char * const config_domain_type_ust = "UST"; | |
133 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 134 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 135 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
136 | |
137 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
138 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
139 | const char * const config_buffer_type_global = "GLOBAL"; | |
140 | ||
141 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
142 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
143 | ||
144 | const char * const config_output_type_splice = "SPLICE"; | |
145 | const char * const config_output_type_mmap = "MMAP"; | |
146 | ||
147 | const char * const config_loglevel_type_all = "ALL"; | |
148 | const char * const config_loglevel_type_range = "RANGE"; | |
149 | const char * const config_loglevel_type_single = "SINGLE"; | |
150 | ||
151 | const char * const config_event_type_all = "ALL"; | |
152 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
153 | const char * const config_event_type_probe = "PROBE"; | |
154 | const char * const config_event_type_function = "FUNCTION"; | |
155 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
156 | const char * const config_event_type_noop = "NOOP"; | |
157 | const char * const config_event_type_syscall = "SYSCALL"; | |
158 | const char * const config_event_type_kprobe = "KPROBE"; | |
159 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
160 | ||
161 | const char * const config_event_context_pid = "PID"; | |
162 | const char * const config_event_context_procname = "PROCNAME"; | |
163 | const char * const config_event_context_prio = "PRIO"; | |
164 | const char * const config_event_context_nice = "NICE"; | |
165 | const char * const config_event_context_vpid = "VPID"; | |
166 | const char * const config_event_context_tid = "TID"; | |
167 | const char * const config_event_context_vtid = "VTID"; | |
168 | const char * const config_event_context_ppid = "PPID"; | |
169 | const char * const config_event_context_vppid = "VPPID"; | |
170 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
171 | const char * const config_event_context_hostname = "HOSTNAME"; | |
172 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 173 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
174 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
175 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
176 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
177 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
178 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
fb198a11 | 179 | |
d7b645e2 JR |
180 | enum process_event_node_phase { |
181 | CREATION = 0, | |
182 | ENABLE = 1, | |
183 | }; | |
184 | ||
dcf266c0 JG |
185 | struct consumer_output { |
186 | int enabled; | |
187 | char *path; | |
188 | char *control_uri; | |
189 | char *data_uri; | |
190 | }; | |
191 | ||
1501a7f3 JG |
192 | static int config_entry_handler_filter(struct handler_filter_args *args, |
193 | const char *section, const char *name, const char *value) | |
194 | { | |
195 | int ret = 0; | |
196 | struct config_entry entry = { section, name, value }; | |
197 | ||
198 | assert(args); | |
199 | ||
200 | if (!section || !name || !value) { | |
201 | ret = -EIO; | |
202 | goto end; | |
203 | } | |
204 | ||
205 | if (args->section) { | |
206 | if (strcmp(args->section, section)) { | |
207 | goto end; | |
208 | } | |
209 | } | |
210 | ||
211 | ret = args->handler(&entry, args->user_data); | |
212 | end: | |
213 | return ret; | |
214 | } | |
215 | ||
216 | LTTNG_HIDDEN | |
217 | int config_get_section_entries(const char *override_path, const char *section, | |
218 | config_entry_handler_cb handler, void *user_data) | |
219 | { | |
220 | int ret = 0; | |
7ab02a27 | 221 | char *path; |
1501a7f3 JG |
222 | FILE *config_file = NULL; |
223 | struct handler_filter_args filter = { section, handler, user_data }; | |
224 | ||
7ab02a27 DG |
225 | /* First, try system-wide conf. file. */ |
226 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
227 | ||
228 | config_file = fopen(path, "r"); | |
229 | if (config_file) { | |
230 | DBG("Loading daemon conf file at %s", path); | |
231 | /* | |
232 | * Return value is not very important here since error or not, we | |
233 | * continue and try the next possible conf. file. | |
234 | */ | |
235 | (void) ini_parse_file(config_file, | |
236 | (ini_entry_handler) config_entry_handler_filter, | |
237 | (void *) &filter); | |
238 | fclose(config_file); | |
239 | } | |
240 | ||
241 | /* Second is the user local configuration. */ | |
242 | path = utils_get_home_dir(); | |
243 | if (path) { | |
244 | char fullpath[PATH_MAX]; | |
245 | ||
246 | ret = snprintf(fullpath, sizeof(fullpath), | |
247 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
248 | if (ret < 0) { | |
249 | PERROR("snprintf user conf. path"); | |
250 | goto error; | |
251 | } | |
252 | ||
253 | config_file = fopen(fullpath, "r"); | |
254 | if (config_file) { | |
255 | DBG("Loading daemon user conf file at %s", path); | |
256 | /* | |
257 | * Return value is not very important here since error or not, we | |
258 | * continue and try the next possible conf. file. | |
259 | */ | |
260 | (void) ini_parse_file(config_file, | |
261 | (ini_entry_handler) config_entry_handler_filter, | |
262 | (void *) &filter); | |
263 | fclose(config_file); | |
264 | } | |
265 | } | |
266 | ||
267 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
268 | if (override_path) { |
269 | config_file = fopen(override_path, "r"); | |
270 | if (config_file) { | |
7ab02a27 DG |
271 | DBG("Loading daemon command line conf file at %s", override_path); |
272 | (void) ini_parse_file(config_file, | |
273 | (ini_entry_handler) config_entry_handler_filter, | |
274 | (void *) &filter); | |
275 | fclose(config_file); | |
1501a7f3 JG |
276 | } else { |
277 | ERR("Failed to open daemon configuration file at %s", | |
278 | override_path); | |
279 | ret = -ENOENT; | |
7ab02a27 | 280 | goto error; |
1501a7f3 JG |
281 | } |
282 | } | |
283 | ||
7ab02a27 DG |
284 | /* Everything went well. */ |
285 | ret = 0; | |
1501a7f3 | 286 | |
7ab02a27 | 287 | error: |
1501a7f3 JG |
288 | return ret; |
289 | } | |
290 | ||
291 | LTTNG_HIDDEN | |
292 | int config_parse_value(const char *value) | |
293 | { | |
294 | int i, ret = 0; | |
295 | char *endptr, *lower_str; | |
296 | size_t len; | |
297 | unsigned long v; | |
298 | ||
299 | len = strlen(value); | |
300 | if (!len) { | |
301 | ret = -1; | |
302 | goto end; | |
303 | } | |
304 | ||
305 | v = strtoul(value, &endptr, 10); | |
306 | if (endptr != value) { | |
307 | ret = v; | |
308 | goto end; | |
309 | } | |
310 | ||
311 | lower_str = zmalloc(len + 1); | |
312 | if (!lower_str) { | |
313 | PERROR("zmalloc"); | |
314 | ret = -errno; | |
315 | goto end; | |
316 | } | |
317 | ||
318 | for (i = 0; i < len; i++) { | |
319 | lower_str[i] = tolower(value[i]); | |
320 | } | |
321 | ||
322 | if (!strcmp(lower_str, config_str_yes) || | |
323 | !strcmp(lower_str, config_str_true) || | |
324 | !strcmp(lower_str, config_str_on)) { | |
325 | ret = 1; | |
326 | } else if (!strcmp(lower_str, config_str_no) || | |
327 | !strcmp(lower_str, config_str_false) || | |
328 | !strcmp(lower_str, config_str_off)) { | |
329 | ret = 0; | |
330 | } else { | |
331 | ret = -1; | |
332 | } | |
333 | ||
334 | free(lower_str); | |
335 | end: | |
336 | return ret; | |
337 | } | |
36f2332b JG |
338 | |
339 | /* | |
340 | * Returns a xmlChar string which must be released using xmlFree(). | |
341 | */ | |
342 | static xmlChar *encode_string(const char *in_str) | |
343 | { | |
344 | xmlChar *out_str = NULL; | |
345 | xmlCharEncodingHandlerPtr handler; | |
346 | int out_len, ret, in_len; | |
347 | ||
348 | assert(in_str); | |
349 | ||
350 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
351 | if (!handler) { | |
352 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
353 | goto end; | |
354 | } | |
355 | ||
356 | in_len = strlen(in_str); | |
357 | /* | |
f76d886f JG |
358 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
359 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 360 | */ |
f76d886f | 361 | out_len = (in_len * 4) + 1; |
36f2332b JG |
362 | out_str = xmlMalloc(out_len); |
363 | if (!out_str) { | |
364 | goto end; | |
365 | } | |
366 | ||
367 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
368 | if (ret < 0) { | |
369 | xmlFree(out_str); | |
370 | out_str = NULL; | |
371 | goto end; | |
372 | } | |
373 | ||
374 | /* out_len is now the size of out_str */ | |
375 | out_str[out_len] = '\0'; | |
376 | end: | |
377 | return out_str; | |
378 | } | |
379 | ||
380 | LTTNG_HIDDEN | |
705bb62f | 381 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
382 | { |
383 | int ret; | |
384 | struct config_writer *writer; | |
385 | xmlOutputBufferPtr buffer; | |
386 | ||
387 | writer = zmalloc(sizeof(struct config_writer)); | |
388 | if (!writer) { | |
389 | PERROR("zmalloc config_writer_create"); | |
390 | goto end; | |
391 | } | |
392 | ||
393 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
394 | if (!buffer) { | |
395 | goto error_destroy; | |
396 | } | |
397 | ||
398 | writer->writer = xmlNewTextWriter(buffer); | |
399 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
400 | config_xml_encoding, NULL); | |
401 | if (ret < 0) { | |
402 | goto error_destroy; | |
403 | } | |
404 | ||
405 | ret = xmlTextWriterSetIndentString(writer->writer, | |
406 | BAD_CAST config_xml_indent_string); | |
705bb62f | 407 | if (ret) { |
36f2332b JG |
408 | goto error_destroy; |
409 | } | |
410 | ||
705bb62f JRJ |
411 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
412 | if (ret) { | |
36f2332b JG |
413 | goto error_destroy; |
414 | } | |
415 | ||
416 | end: | |
417 | return writer; | |
418 | error_destroy: | |
419 | config_writer_destroy(writer); | |
420 | return NULL; | |
421 | } | |
422 | ||
423 | LTTNG_HIDDEN | |
424 | int config_writer_destroy(struct config_writer *writer) | |
425 | { | |
426 | int ret = 0; | |
427 | ||
428 | if (!writer) { | |
429 | ret = -EINVAL; | |
430 | goto end; | |
431 | } | |
432 | ||
433 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
434 | WARN("Could not close XML document"); | |
435 | ret = -EIO; | |
436 | } | |
437 | ||
438 | if (writer->writer) { | |
439 | xmlFreeTextWriter(writer->writer); | |
440 | } | |
441 | ||
442 | free(writer); | |
443 | end: | |
444 | return ret; | |
445 | } | |
446 | ||
447 | LTTNG_HIDDEN | |
448 | int config_writer_open_element(struct config_writer *writer, | |
449 | const char *element_name) | |
450 | { | |
451 | int ret; | |
452 | xmlChar *encoded_element_name; | |
453 | ||
454 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
455 | ret = -1; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | encoded_element_name = encode_string(element_name); | |
460 | if (!encoded_element_name) { | |
461 | ret = -1; | |
462 | goto end; | |
463 | } | |
464 | ||
465 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
466 | xmlFree(encoded_element_name); | |
467 | end: | |
28676a1d | 468 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
469 | } |
470 | ||
e10b6a1c JG |
471 | LTTNG_HIDDEN |
472 | int config_writer_write_attribute(struct config_writer *writer, | |
473 | const char *name, const char *value) | |
474 | { | |
475 | int ret; | |
476 | xmlChar *encoded_name = NULL; | |
477 | xmlChar *encoded_value = NULL; | |
478 | ||
479 | if (!writer || !writer->writer || !name || !name[0]) { | |
480 | ret = -1; | |
481 | goto end; | |
482 | } | |
483 | ||
484 | encoded_name = encode_string(name); | |
485 | if (!encoded_name) { | |
486 | ret = -1; | |
487 | goto end; | |
488 | } | |
489 | ||
490 | encoded_value = encode_string(value); | |
491 | if (!encoded_value) { | |
492 | ret = -1; | |
493 | goto end; | |
494 | } | |
495 | ||
496 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
497 | encoded_value); | |
498 | end: | |
499 | xmlFree(encoded_name); | |
500 | xmlFree(encoded_value); | |
501 | return ret >= 0 ? 0 : ret; | |
502 | } | |
503 | ||
36f2332b JG |
504 | LTTNG_HIDDEN |
505 | int config_writer_close_element(struct config_writer *writer) | |
506 | { | |
507 | int ret; | |
508 | ||
509 | if (!writer || !writer->writer) { | |
510 | ret = -1; | |
511 | goto end; | |
512 | } | |
513 | ||
514 | ret = xmlTextWriterEndElement(writer->writer); | |
515 | end: | |
28676a1d | 516 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
517 | } |
518 | ||
519 | LTTNG_HIDDEN | |
520 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
521 | const char *element_name, uint64_t value) | |
522 | { | |
523 | int ret; | |
524 | xmlChar *encoded_element_name; | |
525 | ||
526 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
527 | ret = -1; | |
528 | goto end; | |
529 | } | |
530 | ||
531 | encoded_element_name = encode_string(element_name); | |
532 | if (!encoded_element_name) { | |
533 | ret = -1; | |
534 | goto end; | |
535 | } | |
536 | ||
537 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
538 | encoded_element_name, "%" PRIu64, value); | |
539 | xmlFree(encoded_element_name); | |
540 | end: | |
28676a1d | 541 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
542 | } |
543 | ||
544 | LTTNG_HIDDEN | |
545 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
546 | const char *element_name, int64_t value) | |
547 | { | |
548 | int ret; | |
549 | xmlChar *encoded_element_name; | |
550 | ||
551 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
552 | ret = -1; | |
553 | goto end; | |
554 | } | |
555 | ||
556 | encoded_element_name = encode_string(element_name); | |
557 | if (!encoded_element_name) { | |
558 | ret = -1; | |
559 | goto end; | |
560 | } | |
561 | ||
562 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
563 | encoded_element_name, "%" PRIi64, value); | |
564 | xmlFree(encoded_element_name); | |
565 | end: | |
28676a1d | 566 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
567 | } |
568 | ||
569 | LTTNG_HIDDEN | |
570 | int config_writer_write_element_bool(struct config_writer *writer, | |
571 | const char *element_name, int value) | |
572 | { | |
573 | return config_writer_write_element_string(writer, element_name, | |
574 | value ? config_xml_true : config_xml_false); | |
575 | } | |
576 | ||
577 | LTTNG_HIDDEN | |
578 | int config_writer_write_element_string(struct config_writer *writer, | |
579 | const char *element_name, const char *value) | |
580 | { | |
581 | int ret; | |
582 | xmlChar *encoded_element_name = NULL; | |
583 | xmlChar *encoded_value = NULL; | |
584 | ||
585 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
586 | !value) { | |
587 | ret = -1; | |
588 | goto end; | |
589 | } | |
590 | ||
591 | encoded_element_name = encode_string(element_name); | |
592 | if (!encoded_element_name) { | |
593 | ret = -1; | |
594 | goto end; | |
595 | } | |
596 | ||
597 | encoded_value = encode_string(value); | |
598 | if (!encoded_value) { | |
599 | ret = -1; | |
600 | goto end; | |
601 | } | |
602 | ||
603 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 604 | encoded_value); |
36f2332b JG |
605 | end: |
606 | xmlFree(encoded_element_name); | |
607 | xmlFree(encoded_value); | |
28676a1d | 608 | return ret >= 0 ? 0 : ret; |
36f2332b | 609 | } |
dcf266c0 JG |
610 | |
611 | static | |
612 | void xml_error_handler(void *ctx, const char *format, ...) | |
613 | { | |
614 | char *errMsg; | |
615 | va_list args; | |
616 | int ret; | |
617 | ||
618 | va_start(args, format); | |
619 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 620 | va_end(args); |
dcf266c0 JG |
621 | if (ret == -1) { |
622 | ERR("String allocation failed in xml error handler"); | |
623 | return; | |
624 | } | |
dcf266c0 JG |
625 | |
626 | fprintf(stderr, "XML Error: %s", errMsg); | |
627 | free(errMsg); | |
628 | } | |
629 | ||
630 | static | |
631 | void fini_session_config_validation_ctx( | |
632 | struct session_config_validation_ctx *ctx) | |
633 | { | |
634 | if (ctx->parser_ctx) { | |
635 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
636 | } | |
637 | ||
638 | if (ctx->schema) { | |
639 | xmlSchemaFree(ctx->schema); | |
640 | } | |
641 | ||
642 | if (ctx->schema_validation_ctx) { | |
643 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
644 | } | |
645 | ||
646 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
647 | } | |
648 | ||
54e399cb JG |
649 | static |
650 | char *get_session_config_xsd_path() | |
651 | { | |
652 | char *xsd_path; | |
e8fa9fb0 | 653 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
654 | size_t base_path_len; |
655 | size_t max_path_len; | |
656 | ||
657 | if (!base_path) { | |
658 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
659 | } | |
660 | ||
661 | base_path_len = strlen(base_path); | |
662 | max_path_len = base_path_len + | |
663 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
664 | xsd_path = zmalloc(max_path_len); | |
665 | if (!xsd_path) { | |
666 | goto end; | |
667 | } | |
668 | ||
669 | strncpy(xsd_path, base_path, max_path_len); | |
670 | if (xsd_path[base_path_len - 1] != '/') { | |
671 | xsd_path[base_path_len++] = '/'; | |
672 | } | |
673 | ||
674 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
675 | max_path_len - base_path_len); | |
676 | end: | |
677 | return xsd_path; | |
678 | } | |
679 | ||
dcf266c0 JG |
680 | static |
681 | int init_session_config_validation_ctx( | |
682 | struct session_config_validation_ctx *ctx) | |
683 | { | |
684 | int ret; | |
54e399cb JG |
685 | char *xsd_path = get_session_config_xsd_path(); |
686 | ||
687 | if (!xsd_path) { | |
688 | ret = -LTTNG_ERR_NOMEM; | |
689 | goto end; | |
690 | } | |
dcf266c0 | 691 | |
54e399cb | 692 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
693 | if (!ctx->parser_ctx) { |
694 | ERR("XSD parser context creation failed"); | |
695 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
696 | goto end; | |
697 | } | |
698 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
699 | xml_error_handler, NULL); | |
700 | ||
701 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
702 | if (!ctx->schema) { | |
703 | ERR("XSD parsing failed"); | |
704 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
705 | goto end; | |
706 | } | |
707 | ||
708 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
709 | if (!ctx->schema_validation_ctx) { | |
710 | ERR("XSD validation context creation failed"); | |
711 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
712 | goto end; | |
713 | } | |
714 | ||
715 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
716 | xml_error_handler, NULL); | |
717 | ret = 0; | |
718 | ||
719 | end: | |
720 | if (ret) { | |
721 | fini_session_config_validation_ctx(ctx); | |
722 | } | |
723 | ||
54e399cb | 724 | free(xsd_path); |
dcf266c0 JG |
725 | return ret; |
726 | } | |
727 | ||
728 | static | |
729 | int parse_uint(xmlChar *str, uint64_t *val) | |
730 | { | |
731 | int ret; | |
732 | char *endptr; | |
733 | ||
734 | if (!str || !val) { | |
735 | ret = -1; | |
736 | goto end; | |
737 | } | |
738 | ||
739 | *val = strtoull((const char *) str, &endptr, 10); | |
740 | if (!endptr || *endptr) { | |
741 | ret = -1; | |
742 | } else { | |
743 | ret = 0; | |
744 | } | |
745 | ||
746 | end: | |
747 | return ret; | |
748 | } | |
749 | ||
750 | static | |
751 | int parse_int(xmlChar *str, int64_t *val) | |
752 | { | |
753 | int ret; | |
754 | char *endptr; | |
755 | ||
756 | if (!str || !val) { | |
757 | ret = -1; | |
758 | goto end; | |
759 | } | |
760 | ||
761 | *val = strtoll((const char *) str, &endptr, 10); | |
762 | if (!endptr || *endptr) { | |
763 | ret = -1; | |
764 | } else { | |
765 | ret = 0; | |
766 | } | |
767 | ||
768 | end: | |
769 | return ret; | |
770 | } | |
771 | ||
772 | static | |
773 | int parse_bool(xmlChar *str, int *val) | |
774 | { | |
775 | int ret = 0; | |
776 | ||
777 | if (!str || !val) { | |
778 | ret = -1; | |
779 | goto end; | |
780 | } | |
781 | ||
782 | if (!strcmp((const char *) str, config_xml_true)) { | |
783 | *val = 1; | |
784 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
785 | *val = 0; | |
786 | } else { | |
787 | WARN("Invalid boolean value encoutered (%s).", | |
788 | (const char *) str); | |
789 | ret = -1; | |
790 | } | |
791 | end: | |
792 | return ret; | |
793 | } | |
794 | ||
795 | static | |
796 | int get_domain_type(xmlChar *domain) | |
797 | { | |
798 | int ret; | |
799 | ||
800 | if (!domain) { | |
801 | goto error; | |
802 | } | |
803 | ||
804 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
805 | ret = LTTNG_DOMAIN_KERNEL; | |
806 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
807 | ret = LTTNG_DOMAIN_UST; | |
808 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
809 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
810 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
811 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
812 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
813 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
814 | } else { |
815 | goto error; | |
816 | } | |
817 | ||
818 | return ret; | |
819 | error: | |
820 | return -1; | |
821 | } | |
822 | ||
823 | static | |
824 | int get_buffer_type(xmlChar *buffer_type) | |
825 | { | |
826 | int ret; | |
827 | ||
828 | if (!buffer_type) { | |
829 | goto error; | |
830 | } | |
831 | ||
832 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
833 | ret = LTTNG_BUFFER_GLOBAL; | |
834 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
835 | ret = LTTNG_BUFFER_PER_UID; | |
836 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
837 | ret = LTTNG_BUFFER_PER_PID; | |
838 | } else { | |
839 | goto error; | |
840 | } | |
841 | ||
842 | return ret; | |
843 | error: | |
844 | return -1; | |
845 | } | |
846 | ||
847 | static | |
848 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
849 | { | |
850 | int ret; | |
851 | ||
852 | if (!overwrite_mode) { | |
853 | goto error; | |
854 | } | |
855 | ||
856 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
857 | ret = 1; | |
858 | } else if (!strcmp((char *) overwrite_mode, | |
859 | config_overwrite_mode_discard)) { | |
860 | ret = 0; | |
861 | } else { | |
862 | goto error; | |
863 | } | |
864 | ||
865 | return ret; | |
866 | error: | |
867 | return -1; | |
868 | } | |
869 | ||
870 | static | |
871 | int get_output_type(xmlChar *output_type) | |
872 | { | |
873 | int ret; | |
874 | ||
875 | if (!output_type) { | |
876 | goto error; | |
877 | } | |
878 | ||
879 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
880 | ret = LTTNG_EVENT_MMAP; | |
881 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
882 | ret = LTTNG_EVENT_SPLICE; | |
883 | } else { | |
884 | goto error; | |
885 | } | |
886 | ||
887 | return ret; | |
888 | error: | |
889 | return -1; | |
890 | } | |
891 | ||
892 | static | |
893 | int get_event_type(xmlChar *event_type) | |
894 | { | |
895 | int ret; | |
896 | ||
897 | if (!event_type) { | |
898 | goto error; | |
899 | } | |
900 | ||
901 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
902 | ret = LTTNG_EVENT_ALL; | |
903 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
904 | ret = LTTNG_EVENT_TRACEPOINT; | |
905 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
906 | ret = LTTNG_EVENT_PROBE; | |
907 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
908 | ret = LTTNG_EVENT_FUNCTION; | |
909 | } else if (!strcmp((char *) event_type, | |
910 | config_event_type_function_entry)) { | |
911 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
912 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
913 | ret = LTTNG_EVENT_NOOP; | |
914 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
915 | ret = LTTNG_EVENT_SYSCALL; | |
916 | } else { | |
917 | goto error; | |
918 | } | |
919 | ||
920 | return ret; | |
921 | error: | |
922 | return -1; | |
923 | } | |
924 | ||
925 | static | |
926 | int get_loglevel_type(xmlChar *loglevel_type) | |
927 | { | |
928 | int ret; | |
929 | ||
930 | if (!loglevel_type) { | |
931 | goto error; | |
932 | } | |
933 | ||
934 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
935 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
936 | } else if (!strcmp((char *) loglevel_type, | |
937 | config_loglevel_type_range)) { | |
938 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
939 | } else if (!strcmp((char *) loglevel_type, | |
940 | config_loglevel_type_single)) { | |
941 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
942 | } else { | |
943 | goto error; | |
944 | } | |
945 | ||
946 | return ret; | |
947 | error: | |
948 | return -1; | |
949 | } | |
950 | ||
951 | /* | |
952 | * Return the context type or -1 on error. | |
953 | */ | |
954 | static | |
955 | int get_context_type(xmlChar *context_type) | |
956 | { | |
957 | int ret; | |
958 | ||
959 | if (!context_type) { | |
960 | goto error; | |
961 | } | |
962 | ||
963 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
964 | ret = LTTNG_EVENT_CONTEXT_PID; | |
965 | } else if (!strcmp((char *) context_type, | |
966 | config_event_context_procname)) { | |
967 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
968 | } else if (!strcmp((char *) context_type, | |
969 | config_event_context_prio)) { | |
970 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
971 | } else if (!strcmp((char *) context_type, | |
972 | config_event_context_nice)) { | |
973 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
974 | } else if (!strcmp((char *) context_type, | |
975 | config_event_context_vpid)) { | |
976 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
977 | } else if (!strcmp((char *) context_type, | |
978 | config_event_context_tid)) { | |
979 | ret = LTTNG_EVENT_CONTEXT_TID; | |
980 | } else if (!strcmp((char *) context_type, | |
981 | config_event_context_vtid)) { | |
982 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
983 | } else if (!strcmp((char *) context_type, | |
984 | config_event_context_ppid)) { | |
985 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
986 | } else if (!strcmp((char *) context_type, | |
987 | config_event_context_vppid)) { | |
988 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
989 | } else if (!strcmp((char *) context_type, | |
990 | config_event_context_pthread_id)) { | |
991 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
992 | } else if (!strcmp((char *) context_type, | |
993 | config_event_context_hostname)) { | |
994 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
995 | } else if (!strcmp((char *) context_type, | |
996 | config_event_context_ip)) { | |
997 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
998 | } else if (!strcmp((char *) context_type, |
999 | config_event_context_interruptible)) { | |
1000 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1001 | } else if (!strcmp((char *) context_type, | |
1002 | config_event_context_preemptible)) { | |
1003 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1004 | } else if (!strcmp((char *) context_type, | |
1005 | config_event_context_need_reschedule)) { | |
1006 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1007 | } else if (!strcmp((char *) context_type, | |
1008 | config_event_context_migratable)) { | |
1009 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
dcf266c0 JG |
1010 | } else { |
1011 | goto error; | |
1012 | } | |
1013 | ||
1014 | return ret; | |
1015 | error: | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | static | |
1020 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1021 | { | |
1022 | int ret; | |
1023 | xmlNodePtr node; | |
1024 | ||
1025 | for (node = xmlFirstElementChild(domain_node); node; | |
1026 | node = xmlNextElementSibling(node)) { | |
1027 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1028 | /* domain type */ | |
1029 | xmlChar *node_content = xmlNodeGetContent(node); | |
1030 | if (!node_content) { | |
1031 | ret = -LTTNG_ERR_NOMEM; | |
1032 | goto end; | |
1033 | } | |
1034 | ||
1035 | ret = get_domain_type(node_content); | |
1036 | free(node_content); | |
1037 | if (ret < 0) { | |
1038 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1039 | goto end; | |
1040 | } | |
1041 | ||
1042 | domain->type = ret; | |
1043 | } else if (!strcmp((const char *) node->name, | |
1044 | config_element_buffer_type)) { | |
1045 | /* buffer type */ | |
1046 | xmlChar *node_content = xmlNodeGetContent(node); | |
1047 | if (!node_content) { | |
1048 | ret = -LTTNG_ERR_NOMEM; | |
1049 | goto end; | |
1050 | } | |
1051 | ||
1052 | ret = get_buffer_type(node_content); | |
1053 | free(node_content); | |
1054 | if (ret < 0) { | |
1055 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1056 | goto end; | |
1057 | } | |
1058 | ||
1059 | domain->buf_type = ret; | |
1060 | } | |
1061 | } | |
1062 | ret = 0; | |
1063 | end: | |
1064 | return ret; | |
1065 | } | |
1066 | ||
1067 | static | |
1068 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1069 | char **data_uri) | |
1070 | { | |
1071 | xmlNodePtr node; | |
1072 | ||
1073 | for (node = xmlFirstElementChild(net_output_node); node; | |
1074 | node = xmlNextElementSibling(node)) { | |
1075 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1076 | /* control_uri */ | |
1077 | *control_uri = (char *) xmlNodeGetContent(node); | |
1078 | if (!*control_uri) { | |
1079 | break; | |
1080 | } | |
1081 | } else { | |
1082 | /* data_uri */ | |
1083 | *data_uri = (char *) xmlNodeGetContent(node); | |
1084 | if (!*data_uri) { | |
1085 | break; | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1091 | } | |
1092 | ||
1093 | static | |
1094 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1095 | struct consumer_output *output) | |
1096 | { | |
1097 | int ret; | |
1098 | xmlNodePtr node; | |
1099 | ||
1100 | assert(output); | |
1101 | ||
1102 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1103 | node = xmlNextElementSibling(node)) { | |
1104 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1105 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1106 | ||
1107 | /* enabled */ | |
1108 | if (!enabled_str) { | |
1109 | ret = -LTTNG_ERR_NOMEM; | |
1110 | goto end; | |
1111 | } | |
1112 | ||
1113 | ret = parse_bool(enabled_str, &output->enabled); | |
1114 | free(enabled_str); | |
1115 | if (ret) { | |
1116 | goto end; | |
1117 | } | |
1118 | } else { | |
1119 | xmlNodePtr output_type_node; | |
1120 | ||
1121 | /* destination */ | |
1122 | output_type_node = xmlFirstElementChild(node); | |
1123 | if (!output_type_node) { | |
1124 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1125 | goto end; | |
1126 | } | |
1127 | ||
1128 | if (!strcmp((const char *) output_type_node->name, | |
1129 | config_element_path)) { | |
1130 | /* path */ | |
1131 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1132 | if (!output->path) { | |
1133 | ret = -LTTNG_ERR_NOMEM; | |
1134 | goto end; | |
1135 | } | |
1136 | } else { | |
1137 | /* net_output */ | |
1138 | ret = get_net_output_uris(output_type_node, | |
1139 | &output->control_uri, &output->data_uri); | |
1140 | if (ret) { | |
1141 | goto end; | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | } | |
1146 | ret = 0; | |
1147 | ||
1148 | end: | |
1149 | if (ret) { | |
1150 | free(output->path); | |
1151 | free(output->control_uri); | |
1152 | free(output->data_uri); | |
1153 | memset(output, 0, sizeof(struct consumer_output)); | |
1154 | } | |
1155 | return ret; | |
1156 | } | |
1157 | ||
1158 | static | |
95681498 JG |
1159 | int create_session_net_output(const char *name, const char *control_uri, |
1160 | const char *data_uri) | |
dcf266c0 JG |
1161 | { |
1162 | int ret; | |
1163 | struct lttng_handle *handle; | |
1164 | const char *uri = NULL; | |
1165 | ||
1166 | assert(name); | |
dcf266c0 | 1167 | |
95681498 | 1168 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1169 | if (!handle) { |
1170 | ret = -LTTNG_ERR_NOMEM; | |
1171 | goto end; | |
1172 | } | |
1173 | ||
1174 | if (!control_uri || !data_uri) { | |
1175 | uri = control_uri ? control_uri : data_uri; | |
1176 | control_uri = uri; | |
1177 | data_uri = uri; | |
1178 | } | |
1179 | ||
1180 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1181 | lttng_destroy_handle(handle); | |
1182 | end: | |
1183 | return ret; | |
1184 | } | |
1185 | ||
1186 | static | |
1187 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1188 | { | |
1189 | int ret; | |
1190 | xmlNodePtr node = NULL; | |
1191 | xmlNodePtr snapshot_output_list_node; | |
1192 | xmlNodePtr snapshot_output_node; | |
1193 | ||
1194 | assert(session_name); | |
1195 | ||
1196 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1197 | if (ret) { | |
1198 | goto end; | |
1199 | } | |
1200 | ||
1201 | if (!output_node) { | |
1202 | goto end; | |
1203 | } | |
1204 | ||
1205 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1206 | ||
1207 | /* Parse and create snapshot outputs */ | |
1208 | ||
1209 | for (snapshot_output_node = | |
1210 | xmlFirstElementChild(snapshot_output_list_node); | |
1211 | snapshot_output_node; snapshot_output_node = | |
1212 | xmlNextElementSibling(snapshot_output_node)) { | |
1213 | char *name = NULL; | |
1214 | uint64_t max_size = UINT64_MAX; | |
1215 | struct consumer_output output = { 0 }; | |
1216 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1217 | ||
1218 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1219 | node = xmlNextElementSibling(node)) { | |
1220 | if (!strcmp((const char *) node->name, | |
1221 | config_element_name)) { | |
1222 | /* name */ | |
1223 | name = (char *) xmlNodeGetContent(node); | |
1224 | if (!name) { | |
1225 | ret = -LTTNG_ERR_NOMEM; | |
1226 | goto error_snapshot_output; | |
1227 | } | |
1228 | } else if (!strcmp((const char *) node->name, | |
1229 | config_element_max_size)) { | |
1230 | xmlChar *content = xmlNodeGetContent(node); | |
1231 | ||
1232 | /* max_size */ | |
1233 | if (!content) { | |
1234 | ret = -LTTNG_ERR_NOMEM; | |
1235 | goto error_snapshot_output; | |
1236 | } | |
1237 | ret = parse_uint(content, &max_size); | |
1238 | free(content); | |
1239 | if (ret) { | |
1240 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1241 | goto error_snapshot_output; | |
1242 | } | |
1243 | } else { | |
1244 | /* consumer_output */ | |
1245 | ret = process_consumer_output(node, &output); | |
1246 | if (ret) { | |
1247 | goto error_snapshot_output; | |
1248 | } | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | snapshot_output = lttng_snapshot_output_create(); | |
1253 | if (!snapshot_output) { | |
1254 | ret = -LTTNG_ERR_NOMEM; | |
1255 | goto error_snapshot_output; | |
1256 | } | |
1257 | ||
1258 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1259 | if (ret) { | |
1260 | goto error_snapshot_output; | |
1261 | } | |
1262 | ||
1263 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1264 | if (ret) { | |
1265 | goto error_snapshot_output; | |
1266 | } | |
1267 | ||
1268 | if (output.path) { | |
1269 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1270 | snapshot_output); | |
1271 | if (ret) { | |
1272 | goto error_snapshot_output; | |
1273 | } | |
1274 | } else { | |
1275 | if (output.control_uri) { | |
1276 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1277 | snapshot_output); | |
1278 | if (ret) { | |
1279 | goto error_snapshot_output; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | if (output.data_uri) { | |
1284 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1285 | snapshot_output); | |
1286 | if (ret) { | |
1287 | goto error_snapshot_output; | |
1288 | } | |
1289 | } | |
1290 | } | |
1291 | ||
1292 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1293 | error_snapshot_output: | |
1294 | free(name); | |
1295 | free(output.path); | |
1296 | free(output.control_uri); | |
1297 | free(output.data_uri); | |
1298 | lttng_snapshot_output_destroy(snapshot_output); | |
1299 | if (ret) { | |
1300 | goto end; | |
1301 | } | |
1302 | } | |
1303 | end: | |
1304 | return ret; | |
1305 | } | |
1306 | ||
1307 | static | |
1308 | int create_session(const char *name, | |
1309 | struct lttng_domain *kernel_domain, | |
1310 | struct lttng_domain *ust_domain, | |
1311 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1312 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1313 | xmlNodePtr output_node, |
1314 | uint64_t live_timer_interval) | |
1315 | { | |
1316 | int ret; | |
1317 | struct consumer_output output = { 0 }; | |
1318 | xmlNodePtr consumer_output_node; | |
1319 | ||
1320 | assert(name); | |
dcf266c0 JG |
1321 | |
1322 | if (output_node) { | |
1323 | consumer_output_node = xmlFirstElementChild(output_node); | |
1324 | if (!consumer_output_node) { | |
1325 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1326 | goto end; | |
1327 | } | |
1328 | ||
1329 | if (strcmp((const char *) consumer_output_node->name, | |
1330 | config_element_consumer_output)) { | |
1331 | WARN("Invalid output type, expected %s node", | |
1332 | config_element_consumer_output); | |
1333 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1334 | goto end; | |
1335 | } | |
1336 | ||
1337 | ret = process_consumer_output(consumer_output_node, &output); | |
1338 | if (ret) { | |
1339 | goto end; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | if (live_timer_interval != UINT64_MAX && | |
1344 | !output.control_uri && !output.data_uri) { | |
1345 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1346 | goto end; | |
1347 | } | |
1348 | ||
1349 | if (output.control_uri || output.data_uri) { | |
dcf266c0 JG |
1350 | /* network destination */ |
1351 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1352 | /* |
1353 | * URLs are provided for sure since the test above make sure that | |
1354 | * with a live timer the data and control URIs are provided. So, | |
1355 | * NULL is passed here and will be set right after. | |
1356 | */ | |
1357 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1358 | } else { |
1359 | ret = lttng_create_session(name, NULL); | |
1360 | } | |
1361 | if (ret) { | |
1362 | goto end; | |
1363 | } | |
1364 | ||
95681498 JG |
1365 | ret = create_session_net_output(name, output.control_uri, |
1366 | output.data_uri); | |
1367 | if (ret) { | |
1368 | goto end; | |
dcf266c0 | 1369 | } |
95681498 | 1370 | |
dcf266c0 JG |
1371 | } else { |
1372 | /* either local output or no output */ | |
1373 | ret = lttng_create_session(name, output.path); | |
1374 | if (ret) { | |
1375 | goto end; | |
1376 | } | |
1377 | } | |
1378 | end: | |
1379 | free(output.path); | |
1380 | free(output.control_uri); | |
1381 | free(output.data_uri); | |
1382 | return ret; | |
1383 | } | |
1384 | static | |
1385 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1386 | struct lttng_event_probe_attr *attr) | |
1387 | { | |
1388 | int ret; | |
1389 | ||
1390 | assert(probe_attribute_node); | |
1391 | assert(attr); | |
1392 | ||
1393 | if (!strcmp((const char *) probe_attribute_node->name, | |
1394 | config_element_address)) { | |
1395 | xmlChar *content; | |
1396 | uint64_t addr = 0; | |
1397 | ||
1398 | /* addr */ | |
1399 | content = xmlNodeGetContent(probe_attribute_node); | |
1400 | if (!content) { | |
1401 | ret = -LTTNG_ERR_NOMEM; | |
1402 | goto end; | |
1403 | } | |
1404 | ||
1405 | ret = parse_uint(content, &addr); | |
1406 | free(content); | |
1407 | if (ret) { | |
1408 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1409 | goto end; | |
1410 | } | |
1411 | ||
1412 | attr->addr = addr; | |
1413 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1414 | config_element_offset)) { | |
1415 | xmlChar *content; | |
1416 | uint64_t offset = 0; | |
1417 | ||
1418 | /* offset */ | |
1419 | content = xmlNodeGetContent(probe_attribute_node); | |
1420 | if (!content) { | |
1421 | ret = -LTTNG_ERR_NOMEM; | |
1422 | goto end; | |
1423 | } | |
1424 | ||
1425 | ret = parse_uint(content, &offset); | |
1426 | free(content); | |
1427 | if (ret) { | |
1428 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1429 | goto end; | |
1430 | } | |
1431 | ||
1432 | attr->offset = offset; | |
1433 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1434 | config_element_symbol_name)) { | |
1435 | xmlChar *content; | |
1436 | size_t name_len; | |
1437 | ||
1438 | /* symbol_name */ | |
1439 | content = xmlNodeGetContent(probe_attribute_node); | |
1440 | if (!content) { | |
1441 | ret = -LTTNG_ERR_NOMEM; | |
1442 | goto end; | |
1443 | } | |
1444 | ||
1445 | name_len = strlen((char *) content); | |
1446 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1447 | WARN("symbol_name too long."); | |
1448 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1449 | free(content); | |
1450 | goto end; | |
1451 | } | |
1452 | ||
1453 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1454 | free(content); | |
1455 | } | |
1456 | ret = 0; | |
1457 | end: | |
1458 | return ret; | |
1459 | } | |
1460 | ||
1461 | static | |
1462 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1463 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1464 | { |
d7b645e2 | 1465 | int ret = 0, i; |
dcf266c0 JG |
1466 | xmlNodePtr node; |
1467 | struct lttng_event event; | |
1468 | char **exclusions = NULL; | |
1469 | unsigned long exclusion_count = 0; | |
1470 | char *filter_expression = NULL; | |
1471 | ||
1472 | assert(event_node); | |
1473 | assert(handle); | |
1474 | assert(channel_name); | |
1475 | ||
1476 | memset(&event, 0, sizeof(event)); | |
1477 | ||
f40eba3d JG |
1478 | /* Initialize default log level which varies by domain */ |
1479 | switch (handle->domain.type) | |
1480 | { | |
1481 | case LTTNG_DOMAIN_JUL: | |
1482 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1483 | break; | |
1484 | case LTTNG_DOMAIN_LOG4J: | |
1485 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1486 | break; | |
1487 | case LTTNG_DOMAIN_PYTHON: | |
1488 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1489 | break; | |
1490 | case LTTNG_DOMAIN_UST: | |
1491 | case LTTNG_DOMAIN_KERNEL: | |
1492 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1493 | break; | |
1494 | default: | |
1495 | assert(0); | |
1496 | } | |
1497 | ||
dcf266c0 JG |
1498 | for (node = xmlFirstElementChild(event_node); node; |
1499 | node = xmlNextElementSibling(node)) { | |
1500 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1501 | xmlChar *content; | |
1502 | size_t name_len; | |
1503 | ||
1504 | /* name */ | |
1505 | content = xmlNodeGetContent(node); | |
1506 | if (!content) { | |
1507 | ret = -LTTNG_ERR_NOMEM; | |
1508 | goto end; | |
1509 | } | |
1510 | ||
1511 | name_len = strlen((char *) content); | |
1512 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1513 | WARN("Channel name too long."); | |
1514 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1515 | free(content); | |
1516 | goto end; | |
1517 | } | |
1518 | ||
1519 | strncpy(event.name, (const char *) content, name_len); | |
1520 | free(content); | |
1521 | } else if (!strcmp((const char *) node->name, | |
1522 | config_element_enabled)) { | |
1523 | xmlChar *content = xmlNodeGetContent(node); | |
1524 | ||
1525 | /* enabled */ | |
1526 | if (!content) { | |
1527 | ret = -LTTNG_ERR_NOMEM; | |
1528 | goto end; | |
1529 | } | |
1530 | ||
1531 | ret = parse_bool(content, &event.enabled); | |
1532 | free(content); | |
1533 | if (ret) { | |
1534 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1535 | goto end; | |
1536 | } | |
1537 | } else if (!strcmp((const char *) node->name, | |
1538 | config_element_type)) { | |
1539 | xmlChar *content = xmlNodeGetContent(node); | |
1540 | ||
1541 | /* type */ | |
1542 | if (!content) { | |
1543 | ret = -LTTNG_ERR_NOMEM; | |
1544 | goto end; | |
1545 | } | |
1546 | ||
1547 | ret = get_event_type(content); | |
1548 | free(content); | |
1549 | if (ret < 0) { | |
1550 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1551 | goto end; | |
1552 | } | |
1553 | ||
1554 | event.type = ret; | |
1555 | } else if (!strcmp((const char *) node->name, | |
1556 | config_element_loglevel_type)) { | |
1557 | xmlChar *content = xmlNodeGetContent(node); | |
1558 | ||
1559 | /* loglevel_type */ | |
1560 | if (!content) { | |
1561 | ret = -LTTNG_ERR_NOMEM; | |
1562 | goto end; | |
1563 | } | |
1564 | ||
1565 | ret = get_loglevel_type(content); | |
1566 | free(content); | |
1567 | if (ret < 0) { | |
1568 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1569 | goto end; | |
1570 | } | |
1571 | ||
1572 | event.loglevel_type = ret; | |
1573 | } else if (!strcmp((const char *) node->name, | |
1574 | config_element_loglevel)) { | |
1575 | xmlChar *content; | |
1576 | int64_t loglevel = 0; | |
1577 | ||
1578 | /* loglevel */ | |
1579 | content = xmlNodeGetContent(node); | |
1580 | if (!content) { | |
1581 | ret = -LTTNG_ERR_NOMEM; | |
1582 | goto end; | |
1583 | } | |
1584 | ||
1585 | ret = parse_int(content, &loglevel); | |
1586 | free(content); | |
1587 | if (ret) { | |
1588 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1589 | goto end; | |
1590 | } | |
1591 | ||
1592 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1593 | WARN("loglevel out of range."); | |
1594 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1595 | goto end; | |
1596 | } | |
1597 | ||
1598 | event.loglevel = loglevel; | |
1599 | } else if (!strcmp((const char *) node->name, | |
1600 | config_element_filter)) { | |
1601 | xmlChar *content = | |
1602 | xmlNodeGetContent(node); | |
1603 | ||
1604 | /* filter */ | |
1605 | if (!content) { | |
1606 | ret = -LTTNG_ERR_NOMEM; | |
1607 | goto end; | |
1608 | } | |
1609 | ||
1610 | filter_expression = strdup((char *) content); | |
1611 | free(content); | |
1612 | if (!filter_expression) { | |
1613 | ret = -LTTNG_ERR_NOMEM; | |
1614 | goto end; | |
1615 | } | |
1616 | } else if (!strcmp((const char *) node->name, | |
1617 | config_element_exclusions)) { | |
1618 | xmlNodePtr exclusion_node; | |
1619 | int exclusion_index = 0; | |
1620 | ||
1621 | /* exclusions */ | |
1622 | if (exclusions) { | |
1623 | /* | |
1624 | * Exclusions has already been initialized, | |
1625 | * invalid file. | |
1626 | */ | |
1627 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1628 | goto end; | |
1629 | } | |
1630 | ||
1631 | exclusion_count = xmlChildElementCount(node); | |
1632 | if (!exclusion_count) { | |
1633 | continue; | |
1634 | } | |
1635 | ||
1636 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1637 | if (!exclusions) { | |
1638 | exclusion_count = 0; | |
1639 | ret = -LTTNG_ERR_NOMEM; | |
1640 | goto end; | |
1641 | } | |
1642 | ||
1643 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1644 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1645 | xmlChar *content = | |
1646 | xmlNodeGetContent(exclusion_node); | |
1647 | ||
1648 | if (!content) { | |
1649 | ret = -LTTNG_ERR_NOMEM; | |
1650 | goto end; | |
1651 | } | |
1652 | ||
1653 | exclusions[exclusion_index] = strdup((const char *) content); | |
1654 | free(content); | |
1655 | if (!exclusions[exclusion_index]) { | |
1656 | ret = -LTTNG_ERR_NOMEM; | |
1657 | goto end; | |
1658 | } | |
1659 | exclusion_index++; | |
1660 | } | |
1661 | ||
1662 | event.exclusion = 1; | |
1663 | } else if (!strcmp((const char *) node->name, | |
1664 | config_element_attributes)) { | |
1665 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1666 | ||
1667 | /* attributes */ | |
1668 | if (!attribute_node) { | |
1669 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1670 | goto end; | |
1671 | } | |
1672 | ||
1673 | if (!strcmp((const char *) node->name, | |
1674 | config_element_probe_attributes)) { | |
1675 | xmlNodePtr probe_attribute_node; | |
1676 | ||
1677 | /* probe_attributes */ | |
1678 | for (probe_attribute_node = | |
1679 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1680 | probe_attribute_node = xmlNextElementSibling( | |
1681 | probe_attribute_node)) { | |
1682 | ||
1683 | ret = process_probe_attribute_node(probe_attribute_node, | |
1684 | &event.attr.probe); | |
1685 | if (ret) { | |
1686 | goto end; | |
1687 | } | |
1688 | } | |
1689 | } else { | |
1690 | size_t sym_len; | |
1691 | xmlChar *content; | |
1692 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1693 | ||
1694 | /* function_attributes */ | |
1695 | content = xmlNodeGetContent(symbol_node); | |
1696 | if (!content) { | |
1697 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1698 | goto end; | |
1699 | } | |
1700 | ||
1701 | sym_len = strlen((char *) content); | |
1702 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1703 | WARN("Function name too long."); | |
1704 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1705 | free(content); | |
1706 | goto end; | |
1707 | } | |
1708 | ||
1709 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1710 | sym_len); | |
1711 | free(content); | |
1712 | } | |
1713 | } | |
1714 | } | |
1715 | ||
d7b645e2 JR |
1716 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1717 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1718 | filter_expression, exclusion_count, exclusions); | |
1719 | if (ret < 0) { | |
1720 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1721 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1722 | goto end; | |
1723 | } | |
065321e9 | 1724 | } |
dcf266c0 JG |
1725 | end: |
1726 | for (i = 0; i < exclusion_count; i++) { | |
1727 | free(exclusions[i]); | |
1728 | } | |
1729 | ||
1730 | free(exclusions); | |
1731 | free(filter_expression); | |
1732 | return ret; | |
1733 | } | |
1734 | ||
1735 | static | |
1736 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1737 | const char *channel_name) | |
1738 | { | |
1739 | int ret = 0; | |
d7b645e2 | 1740 | struct lttng_event event; |
dcf266c0 JG |
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)) { | |
d7b645e2 | 1749 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1750 | if (ret) { |
1751 | goto end; | |
1752 | } | |
1753 | } | |
d7b645e2 JR |
1754 | |
1755 | /* | |
1756 | * Disable all events to enable only the necessary events. | |
1757 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1758 | * force this approach. | |
1759 | */ | |
1760 | memset(&event, 0, sizeof(event)); | |
1761 | event.loglevel = -1; | |
1762 | event.type = LTTNG_EVENT_ALL; | |
1763 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1764 | if (ret) { | |
1765 | goto end; | |
1766 | } | |
1767 | ||
1768 | for (node = xmlFirstElementChild(events_node); node; | |
1769 | node = xmlNextElementSibling(node)) { | |
1770 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1771 | if (ret) { | |
1772 | goto end; | |
1773 | } | |
1774 | } | |
1775 | ||
dcf266c0 JG |
1776 | end: |
1777 | return ret; | |
1778 | } | |
1779 | ||
1780 | static | |
1781 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1782 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1783 | xmlNodePtr *events_node) | |
1784 | { | |
1785 | int ret; | |
1786 | ||
1787 | assert(attr_node); | |
1788 | assert(channel); | |
1789 | assert(contexts_node); | |
1790 | assert(events_node); | |
1791 | ||
1792 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1793 | xmlChar *content; | |
1794 | size_t name_len; | |
1795 | ||
1796 | /* name */ | |
1797 | content = xmlNodeGetContent(attr_node); | |
1798 | if (!content) { | |
1799 | ret = -LTTNG_ERR_NOMEM; | |
1800 | goto end; | |
1801 | } | |
1802 | ||
1803 | name_len = strlen((char *) content); | |
1804 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1805 | WARN("Channel name too long."); | |
1806 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1807 | free(content); | |
1808 | goto end; | |
1809 | } | |
1810 | ||
1811 | strncpy(channel->name, (const char *) content, name_len); | |
1812 | free(content); | |
1813 | } else if (!strcmp((const char *) attr_node->name, | |
1814 | config_element_enabled)) { | |
1815 | xmlChar *content; | |
1816 | int enabled; | |
1817 | ||
1818 | /* enabled */ | |
1819 | content = xmlNodeGetContent(attr_node); | |
1820 | if (!content) { | |
1821 | ret = -LTTNG_ERR_NOMEM; | |
1822 | goto end; | |
1823 | } | |
1824 | ||
1825 | ret = parse_bool(content, &enabled); | |
1826 | free(content); | |
1827 | if (ret) { | |
1828 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1829 | goto end; | |
1830 | } | |
1831 | ||
1832 | channel->enabled = enabled; | |
1833 | } else if (!strcmp((const char *) attr_node->name, | |
1834 | config_element_overwrite_mode)) { | |
1835 | xmlChar *content; | |
1836 | ||
1837 | /* overwrite_mode */ | |
1838 | content = xmlNodeGetContent(attr_node); | |
1839 | if (!content) { | |
1840 | ret = -LTTNG_ERR_NOMEM; | |
1841 | goto end; | |
1842 | } | |
1843 | ||
1844 | ret = get_overwrite_mode(content); | |
1845 | free(content); | |
1846 | if (ret < 0) { | |
1847 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1848 | goto end; | |
1849 | } | |
1850 | ||
1851 | channel->attr.overwrite = ret; | |
1852 | } else if (!strcmp((const char *) attr_node->name, | |
1853 | config_element_subbuf_size)) { | |
1854 | xmlChar *content; | |
1855 | ||
1856 | /* subbuffer_size */ | |
1857 | content = xmlNodeGetContent(attr_node); | |
1858 | if (!content) { | |
1859 | ret = -LTTNG_ERR_NOMEM; | |
1860 | goto end; | |
1861 | } | |
1862 | ||
1863 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1864 | free(content); | |
1865 | if (ret) { | |
1866 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1867 | goto end; | |
1868 | } | |
1869 | } else if (!strcmp((const char *) attr_node->name, | |
1870 | config_element_num_subbuf)) { | |
1871 | xmlChar *content; | |
1872 | ||
1873 | /* subbuffer_count */ | |
1874 | content = xmlNodeGetContent(attr_node); | |
1875 | if (!content) { | |
1876 | ret = -LTTNG_ERR_NOMEM; | |
1877 | goto end; | |
1878 | } | |
1879 | ||
1880 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1881 | free(content); | |
1882 | if (ret) { | |
1883 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1884 | goto end; | |
1885 | } | |
1886 | } else if (!strcmp((const char *) attr_node->name, | |
1887 | config_element_switch_timer_interval)) { | |
1888 | xmlChar *content; | |
1889 | uint64_t switch_timer_interval = 0; | |
1890 | ||
1891 | /* switch_timer_interval */ | |
1892 | content = xmlNodeGetContent(attr_node); | |
1893 | if (!content) { | |
1894 | ret = -LTTNG_ERR_NOMEM; | |
1895 | goto end; | |
1896 | } | |
1897 | ||
1898 | ret = parse_uint(content, &switch_timer_interval); | |
1899 | free(content); | |
1900 | if (ret) { | |
1901 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1902 | goto end; | |
1903 | } | |
1904 | ||
1905 | if (switch_timer_interval > UINT_MAX) { | |
1906 | WARN("switch_timer_interval out of range."); | |
1907 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1908 | goto end; | |
1909 | } | |
1910 | ||
1911 | channel->attr.switch_timer_interval = | |
1912 | switch_timer_interval; | |
1913 | } else if (!strcmp((const char *) attr_node->name, | |
1914 | config_element_read_timer_interval)) { | |
1915 | xmlChar *content; | |
1916 | uint64_t read_timer_interval = 0; | |
1917 | ||
1918 | /* read_timer_interval */ | |
1919 | content = xmlNodeGetContent(attr_node); | |
1920 | if (!content) { | |
1921 | ret = -LTTNG_ERR_NOMEM; | |
1922 | goto end; | |
1923 | } | |
1924 | ||
1925 | ret = parse_uint(content, &read_timer_interval); | |
1926 | free(content); | |
1927 | if (ret) { | |
1928 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1929 | goto end; | |
1930 | } | |
1931 | ||
1932 | if (read_timer_interval > UINT_MAX) { | |
1933 | WARN("read_timer_interval out of range."); | |
1934 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1935 | goto end; | |
1936 | } | |
1937 | ||
1938 | channel->attr.read_timer_interval = | |
1939 | read_timer_interval; | |
1940 | } else if (!strcmp((const char *) attr_node->name, | |
1941 | config_element_output_type)) { | |
1942 | xmlChar *content; | |
1943 | ||
1944 | /* output_type */ | |
1945 | content = xmlNodeGetContent(attr_node); | |
1946 | if (!content) { | |
1947 | ret = -LTTNG_ERR_NOMEM; | |
1948 | goto end; | |
1949 | } | |
1950 | ||
1951 | ret = get_output_type(content); | |
1952 | free(content); | |
1953 | if (ret < 0) { | |
1954 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1955 | goto end; | |
1956 | } | |
1957 | ||
1958 | channel->attr.output = ret; | |
1959 | } else if (!strcmp((const char *) attr_node->name, | |
1960 | config_element_tracefile_size)) { | |
1961 | xmlChar *content; | |
1962 | ||
1963 | /* tracefile_size */ | |
1964 | content = xmlNodeGetContent(attr_node); | |
1965 | if (!content) { | |
1966 | ret = -LTTNG_ERR_NOMEM; | |
1967 | goto end; | |
1968 | } | |
1969 | ||
1970 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1971 | free(content); | |
1972 | if (ret) { | |
1973 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1974 | goto end; | |
1975 | } | |
1976 | } else if (!strcmp((const char *) attr_node->name, | |
1977 | config_element_tracefile_count)) { | |
1978 | xmlChar *content; | |
1979 | ||
1980 | /* tracefile_count */ | |
1981 | content = xmlNodeGetContent(attr_node); | |
1982 | if (!content) { | |
1983 | ret = -LTTNG_ERR_NOMEM; | |
1984 | goto end; | |
1985 | } | |
1986 | ||
1987 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1988 | free(content); | |
1989 | if (ret) { | |
1990 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1991 | goto end; | |
1992 | } | |
1993 | } else if (!strcmp((const char *) attr_node->name, | |
1994 | config_element_live_timer_interval)) { | |
1995 | xmlChar *content; | |
1996 | uint64_t live_timer_interval = 0; | |
1997 | ||
1998 | /* live_timer_interval */ | |
1999 | content = xmlNodeGetContent(attr_node); | |
2000 | if (!content) { | |
2001 | ret = -LTTNG_ERR_NOMEM; | |
2002 | goto end; | |
2003 | } | |
2004 | ||
2005 | ret = parse_uint(content, &live_timer_interval); | |
2006 | free(content); | |
2007 | if (ret) { | |
2008 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2009 | goto end; | |
2010 | } | |
2011 | ||
2012 | if (live_timer_interval > UINT_MAX) { | |
2013 | WARN("live_timer_interval out of range."); | |
2014 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2015 | goto end; | |
2016 | } | |
2017 | ||
2018 | channel->attr.live_timer_interval = | |
2019 | live_timer_interval; | |
2020 | } else if (!strcmp((const char *) attr_node->name, | |
2021 | config_element_events)) { | |
2022 | /* events */ | |
2023 | *events_node = attr_node; | |
2024 | } else { | |
2025 | /* contexts */ | |
2026 | *contexts_node = attr_node; | |
2027 | } | |
2028 | ret = 0; | |
2029 | end: | |
2030 | return ret; | |
2031 | } | |
2032 | ||
2033 | static | |
2034 | int process_context_node(xmlNodePtr context_node, | |
2035 | struct lttng_handle *handle, const char *channel_name) | |
2036 | { | |
2037 | int ret; | |
2038 | struct lttng_event_context context; | |
2039 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2040 | ||
2041 | assert(handle); | |
2042 | assert(channel_name); | |
2043 | ||
2044 | if (!context_child_node) { | |
2045 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2046 | goto end; | |
2047 | } | |
2048 | ||
2049 | memset(&context, 0, sizeof(context)); | |
2050 | ||
2051 | if (!strcmp((const char *) context_child_node->name, | |
2052 | config_element_type)) { | |
2053 | /* type */ | |
2054 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2055 | |
dcf266c0 JG |
2056 | if (!content) { |
2057 | ret = -LTTNG_ERR_NOMEM; | |
2058 | goto end; | |
2059 | } | |
2060 | ||
2061 | ret = get_context_type(content); | |
2062 | free(content); | |
2063 | if (ret < 0) { | |
2064 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2065 | goto end; | |
2066 | } | |
2067 | ||
2068 | context.ctx = ret; | |
045fc617 JG |
2069 | } else if (!strcmp((const char *) context_child_node->name, |
2070 | config_element_context_perf)) { | |
2071 | /* perf */ | |
dcf266c0 JG |
2072 | xmlNodePtr perf_attr_node; |
2073 | ||
14ce5bd8 JG |
2074 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2075 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2076 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2077 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2078 | perf_attr_node; perf_attr_node = | |
2079 | xmlNextElementSibling(perf_attr_node)) { | |
2080 | if (!strcmp((const char *) perf_attr_node->name, | |
2081 | config_element_type)) { | |
2082 | xmlChar *content; | |
2083 | uint64_t type = 0; | |
2084 | ||
2085 | /* type */ | |
2086 | content = xmlNodeGetContent(perf_attr_node); | |
2087 | if (!content) { | |
2088 | ret = -LTTNG_ERR_NOMEM; | |
2089 | goto end; | |
2090 | } | |
2091 | ||
2092 | ret = parse_uint(content, &type); | |
2093 | free(content); | |
2094 | if (ret) { | |
2095 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2096 | goto end; | |
2097 | } | |
2098 | ||
2099 | if (type > UINT32_MAX) { | |
2100 | WARN("perf context type out of range."); | |
2101 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2102 | goto end; | |
2103 | } | |
2104 | ||
2105 | context.u.perf_counter.type = type; | |
2106 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2107 | config_element_config)) { | |
2108 | xmlChar *content; | |
2109 | uint64_t config = 0; | |
2110 | ||
2111 | /* config */ | |
2112 | content = xmlNodeGetContent(perf_attr_node); | |
2113 | if (!content) { | |
2114 | ret = -LTTNG_ERR_NOMEM; | |
2115 | goto end; | |
2116 | } | |
2117 | ||
2118 | ret = parse_uint(content, &config); | |
2119 | free(content); | |
2120 | if (ret) { | |
2121 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2122 | goto end; | |
2123 | } | |
2124 | ||
2125 | context.u.perf_counter.config = config; | |
2126 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2127 | config_element_name)) { | |
2128 | xmlChar *content; | |
2129 | size_t name_len; | |
2130 | ||
2131 | /* name */ | |
2132 | content = xmlNodeGetContent(perf_attr_node); | |
2133 | if (!content) { | |
2134 | ret = -LTTNG_ERR_NOMEM; | |
2135 | goto end; | |
2136 | } | |
2137 | ||
2138 | name_len = strlen((char *) content); | |
2139 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2140 | WARN("perf context name too long."); | |
2141 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2142 | free(content); | |
2143 | goto end; | |
2144 | } | |
2145 | ||
2146 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2147 | name_len); | |
2148 | free(content); | |
2149 | } | |
2150 | } | |
045fc617 JG |
2151 | } else if (!strcmp((const char *) context_child_node->name, |
2152 | config_element_context_app)) { | |
2153 | /* application context */ | |
2154 | xmlNodePtr app_ctx_node; | |
2155 | ||
2156 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2157 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2158 | app_ctx_node; app_ctx_node = | |
2159 | xmlNextElementSibling(app_ctx_node)) { | |
2160 | xmlChar *content; | |
2161 | char **target = strcmp( | |
2162 | (const char *) app_ctx_node->name, | |
2163 | config_element_context_app_provider_name) == 0 ? | |
2164 | &context.u.app_ctx.provider_name : | |
2165 | &context.u.app_ctx.ctx_name; | |
2166 | ||
2167 | content = xmlNodeGetContent(app_ctx_node); | |
2168 | if (!content) { | |
2169 | ret = -LTTNG_ERR_NOMEM; | |
2170 | goto end; | |
2171 | } | |
2172 | ||
2173 | *target = (char *) content; | |
2174 | } | |
2175 | } else { | |
2176 | /* Unrecognized context type */ | |
2177 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2178 | goto end; | |
dcf266c0 JG |
2179 | } |
2180 | ||
2181 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2182 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2183 | free(context.u.app_ctx.provider_name); | |
2184 | free(context.u.app_ctx.ctx_name); | |
2185 | } | |
dcf266c0 JG |
2186 | end: |
2187 | return ret; | |
2188 | } | |
2189 | ||
2190 | static | |
2191 | int process_contexts_node(xmlNodePtr contexts_node, | |
2192 | struct lttng_handle *handle, const char *channel_name) | |
2193 | { | |
2194 | int ret = 0; | |
2195 | xmlNodePtr context_node; | |
2196 | ||
2197 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2198 | context_node = xmlNextElementSibling(context_node)) { | |
2199 | ret = process_context_node(context_node, handle, channel_name); | |
2200 | if (ret) { | |
2201 | goto end; | |
2202 | } | |
2203 | } | |
2204 | end: | |
2205 | return ret; | |
2206 | } | |
2207 | ||
847a5916 JR |
2208 | static |
2209 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2210 | struct lttng_handle *handle) | |
2211 | { | |
dd49e13f | 2212 | int ret = 0, child; |
847a5916 JR |
2213 | xmlNodePtr targets_node = NULL; |
2214 | xmlNodePtr node; | |
2215 | ||
2216 | assert(handle); | |
2217 | assert(pid_tracker_node); | |
2218 | /* get the targets node */ | |
2219 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2220 | node = xmlNextElementSibling(node)) { | |
2221 | if (!strcmp((const char *) node->name, | |
2222 | config_element_targets)) { | |
2223 | targets_node = node; | |
2224 | break; | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | if (!targets_node) { | |
2229 | ret = LTTNG_ERR_INVALID; | |
2230 | goto end; | |
2231 | } | |
2232 | ||
2233 | /* Go through all pid_target node */ | |
2234 | child = xmlChildElementCount(targets_node); | |
2235 | if (child == 0) { | |
2236 | /* The session is explicitly set to target nothing. */ | |
2237 | ret = lttng_untrack_pid(handle, -1); | |
2238 | if (ret) { | |
2239 | goto end; | |
2240 | } | |
2241 | } | |
2242 | for (node = xmlFirstElementChild(targets_node); node; | |
2243 | node = xmlNextElementSibling(node)) { | |
2244 | xmlNodePtr pid_target_node = node; | |
2245 | ||
2246 | /* get pid node and track it */ | |
2247 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2248 | node = xmlNextElementSibling(node)) { | |
2249 | if (!strcmp((const char *) node->name, | |
2250 | config_element_pid)) { | |
2251 | int64_t pid; | |
2252 | xmlChar *content = NULL; | |
2253 | ||
2254 | content = xmlNodeGetContent(node); | |
2255 | if (!content) { | |
2256 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2257 | goto end; | |
2258 | } | |
2259 | ||
2260 | ret = parse_int(content, &pid); | |
2261 | free(content); | |
2262 | if (ret) { | |
2263 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2264 | goto end; | |
2265 | } | |
2266 | ||
2267 | ret = lttng_track_pid(handle, (int) pid); | |
2268 | if (ret) { | |
2269 | goto end; | |
2270 | } | |
2271 | } | |
2272 | } | |
2273 | node = pid_target_node; | |
2274 | } | |
2275 | ||
2276 | end: | |
2277 | return ret; | |
2278 | } | |
2279 | ||
2280 | ||
dcf266c0 JG |
2281 | static |
2282 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2283 | { | |
2284 | int ret; | |
2285 | struct lttng_domain domain = { 0 }; | |
2286 | struct lttng_handle *handle = NULL; | |
2287 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2288 | xmlNodePtr trackers_node = NULL; |
2289 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2290 | xmlNodePtr node; |
2291 | ||
2292 | assert(session_name); | |
2293 | ||
2294 | ret = init_domain(domain_node, &domain); | |
2295 | if (ret) { | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | handle = lttng_create_handle(session_name, &domain); | |
2300 | if (!handle) { | |
2301 | ret = -LTTNG_ERR_NOMEM; | |
2302 | goto end; | |
2303 | } | |
2304 | ||
2305 | /* get the channels node */ | |
2306 | for (node = xmlFirstElementChild(domain_node); node; | |
2307 | node = xmlNextElementSibling(node)) { | |
2308 | if (!strcmp((const char *) node->name, | |
2309 | config_element_channels)) { | |
2310 | channels_node = node; | |
2311 | break; | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | if (!channels_node) { | |
2316 | goto end; | |
2317 | } | |
2318 | ||
2319 | /* create all channels */ | |
2320 | for (node = xmlFirstElementChild(channels_node); node; | |
2321 | node = xmlNextElementSibling(node)) { | |
2322 | struct lttng_channel channel; | |
2323 | xmlNodePtr contexts_node = NULL; | |
2324 | xmlNodePtr events_node = NULL; | |
2325 | xmlNodePtr channel_attr_node; | |
2326 | ||
2327 | memset(&channel, 0, sizeof(channel)); | |
2328 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2329 | ||
2330 | for (channel_attr_node = xmlFirstElementChild(node); | |
2331 | channel_attr_node; channel_attr_node = | |
2332 | xmlNextElementSibling(channel_attr_node)) { | |
2333 | ret = process_channel_attr_node(channel_attr_node, | |
2334 | &channel, &contexts_node, &events_node); | |
2335 | if (ret) { | |
2336 | goto end; | |
2337 | } | |
2338 | } | |
2339 | ||
2340 | ret = lttng_enable_channel(handle, &channel); | |
2341 | if (ret < 0) { | |
2342 | goto end; | |
2343 | } | |
2344 | ||
2345 | ret = process_events_node(events_node, handle, channel.name); | |
2346 | if (ret) { | |
2347 | goto end; | |
2348 | } | |
2349 | ||
2350 | ret = process_contexts_node(contexts_node, handle, | |
2351 | channel.name); | |
2352 | if (ret) { | |
2353 | goto end; | |
2354 | } | |
2355 | } | |
847a5916 JR |
2356 | |
2357 | /* get the trackers node */ | |
2358 | for (node = xmlFirstElementChild(domain_node); node; | |
2359 | node = xmlNextElementSibling(node)) { | |
2360 | if (!strcmp((const char *) node->name, | |
2361 | config_element_trackers)) { | |
2362 | trackers_node = node; | |
2363 | break; | |
2364 | } | |
2365 | } | |
2366 | ||
2367 | if (!trackers_node) { | |
2368 | goto end; | |
2369 | } | |
2370 | ||
2371 | for (node = xmlFirstElementChild(trackers_node); node; | |
2372 | node = xmlNextElementSibling(node)) { | |
2373 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2374 | pid_tracker_node = node; | |
2375 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2376 | if (ret) { | |
2377 | goto end; | |
2378 | } | |
2379 | } | |
2380 | } | |
2381 | ||
2382 | if (!pid_tracker_node) { | |
2383 | lttng_track_pid(handle, -1); | |
2384 | } | |
2385 | ||
dcf266c0 JG |
2386 | end: |
2387 | lttng_destroy_handle(handle); | |
2388 | return ret; | |
2389 | } | |
2390 | ||
2391 | static | |
2392 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2393 | int override) | |
2394 | { | |
2395 | int ret, started = -1, snapshot_mode = -1; | |
2396 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2397 | xmlChar *name = NULL; |
9e7c9f56 | 2398 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2399 | xmlNodePtr domains_node = NULL; |
2400 | xmlNodePtr output_node = NULL; | |
2401 | xmlNodePtr node; | |
2402 | struct lttng_domain *kernel_domain = NULL; | |
2403 | struct lttng_domain *ust_domain = NULL; | |
2404 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2405 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2406 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2407 | |
2408 | for (node = xmlFirstElementChild(session_node); node; | |
2409 | node = xmlNextElementSibling(node)) { | |
2410 | if (!name && !strcmp((const char *) node->name, | |
2411 | config_element_name)) { | |
2412 | /* name */ | |
2413 | xmlChar *node_content = xmlNodeGetContent(node); | |
2414 | if (!node_content) { | |
2415 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2416 | goto error; |
dcf266c0 JG |
2417 | } |
2418 | ||
d324faf7 | 2419 | name = node_content; |
dcf266c0 JG |
2420 | } else if (!domains_node && !strcmp((const char *) node->name, |
2421 | config_element_domains)) { | |
2422 | /* domains */ | |
2423 | domains_node = node; | |
2424 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2425 | config_element_started)) { | |
2426 | /* started */ | |
2427 | xmlChar *node_content = xmlNodeGetContent(node); | |
2428 | if (!node_content) { | |
2429 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2430 | goto error; |
dcf266c0 JG |
2431 | } |
2432 | ||
2433 | ret = parse_bool(node_content, &started); | |
2434 | free(node_content); | |
2435 | if (ret) { | |
2436 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2437 | goto error; |
dcf266c0 JG |
2438 | } |
2439 | } else if (!output_node && !strcmp((const char *) node->name, | |
2440 | config_element_output)) { | |
2441 | /* output */ | |
2442 | output_node = node; | |
9e7c9f56 JR |
2443 | } else if (!shm_path && !strcmp((const char *) node->name, |
2444 | config_element_shared_memory_path)) { | |
2445 | /* shared memory path */ | |
2446 | xmlChar *node_content = xmlNodeGetContent(node); | |
2447 | if (!node_content) { | |
2448 | ret = -LTTNG_ERR_NOMEM; | |
2449 | goto error; | |
2450 | } | |
2451 | ||
2452 | shm_path = node_content; | |
dcf266c0 JG |
2453 | } else { |
2454 | /* attributes, snapshot_mode or live_timer_interval */ | |
2455 | xmlNodePtr attributes_child = | |
2456 | xmlFirstElementChild(node); | |
2457 | ||
2458 | if (!strcmp((const char *) attributes_child->name, | |
2459 | config_element_snapshot_mode)) { | |
2460 | /* snapshot_mode */ | |
2461 | xmlChar *snapshot_mode_content = | |
2462 | xmlNodeGetContent(attributes_child); | |
2463 | if (!snapshot_mode_content) { | |
2464 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2465 | goto error; |
dcf266c0 JG |
2466 | } |
2467 | ||
2468 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2469 | free(snapshot_mode_content); | |
2470 | if (ret) { | |
2471 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2472 | goto error; |
dcf266c0 JG |
2473 | } |
2474 | } else { | |
2475 | /* live_timer_interval */ | |
2476 | xmlChar *timer_interval_content = | |
2477 | xmlNodeGetContent(attributes_child); | |
2478 | if (!timer_interval_content) { | |
2479 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2480 | goto error; |
dcf266c0 JG |
2481 | } |
2482 | ||
2483 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2484 | free(timer_interval_content); | |
2485 | if (ret) { | |
2486 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2487 | goto error; |
dcf266c0 JG |
2488 | } |
2489 | } | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | if (!name) { | |
2494 | /* Mandatory attribute, as defined in the session XSD */ | |
2495 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2496 | goto error; |
dcf266c0 JG |
2497 | } |
2498 | ||
d324faf7 | 2499 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2500 | /* This is not the session we are looking for */ |
c2da8cde DG |
2501 | ret = -LTTNG_ERR_NO_SESSION; |
2502 | goto error; | |
dcf266c0 JG |
2503 | } |
2504 | ||
2505 | /* Init domains to create the session handles */ | |
2506 | for (node = xmlFirstElementChild(domains_node); node; | |
2507 | node = xmlNextElementSibling(node)) { | |
2508 | struct lttng_domain *domain; | |
2509 | ||
2510 | domain = zmalloc(sizeof(*domain)); | |
2511 | if (!domain) { | |
2512 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2513 | goto error; |
dcf266c0 JG |
2514 | } |
2515 | ||
2516 | ret = init_domain(node, domain); | |
2517 | if (ret) { | |
2518 | goto domain_init_error; | |
2519 | } | |
2520 | ||
2521 | switch (domain->type) { | |
2522 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2523 | if (kernel_domain) { |
2524 | /* Same domain seen twice, invalid! */ | |
2525 | goto domain_init_error; | |
2526 | } | |
dcf266c0 JG |
2527 | kernel_domain = domain; |
2528 | break; | |
2529 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2530 | if (ust_domain) { |
2531 | /* Same domain seen twice, invalid! */ | |
2532 | goto domain_init_error; | |
2533 | } | |
dcf266c0 JG |
2534 | ust_domain = domain; |
2535 | break; | |
2536 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2537 | if (jul_domain) { |
2538 | /* Same domain seen twice, invalid! */ | |
2539 | goto domain_init_error; | |
2540 | } | |
dcf266c0 JG |
2541 | jul_domain = domain; |
2542 | break; | |
5cdb6027 DG |
2543 | case LTTNG_DOMAIN_LOG4J: |
2544 | if (log4j_domain) { | |
2545 | /* Same domain seen twice, invalid! */ | |
2546 | goto domain_init_error; | |
2547 | } | |
2548 | log4j_domain = domain; | |
2549 | break; | |
0e115563 DG |
2550 | case LTTNG_DOMAIN_PYTHON: |
2551 | if (python_domain) { | |
2552 | /* Same domain seen twice, invalid! */ | |
2553 | goto domain_init_error; | |
2554 | } | |
2555 | python_domain = domain; | |
2556 | break; | |
dcf266c0 JG |
2557 | default: |
2558 | WARN("Invalid domain type"); | |
2559 | goto domain_init_error; | |
2560 | } | |
2561 | continue; | |
2562 | domain_init_error: | |
2563 | free(domain); | |
2564 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2565 | goto error; |
dcf266c0 JG |
2566 | } |
2567 | ||
2568 | if (override) { | |
2569 | /* Destroy session if it exists */ | |
d324faf7 | 2570 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2571 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2572 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2573 | goto error; |
dcf266c0 JG |
2574 | } |
2575 | } | |
2576 | ||
2577 | /* Create session type depending on output type */ | |
2578 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2579 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2580 | } else if (live_timer_interval && |
2581 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2582 | ret = create_session((const char *) name, kernel_domain, |
2583 | ust_domain, jul_domain, log4j_domain, | |
2584 | output_node, live_timer_interval); | |
dcf266c0 JG |
2585 | } else { |
2586 | /* regular session */ | |
d324faf7 JG |
2587 | ret = create_session((const char *) name, kernel_domain, |
2588 | ust_domain, jul_domain, log4j_domain, | |
2589 | output_node, UINT64_MAX); | |
dcf266c0 | 2590 | } |
dcf266c0 | 2591 | if (ret) { |
c2da8cde | 2592 | goto error; |
dcf266c0 JG |
2593 | } |
2594 | ||
9e7c9f56 JR |
2595 | if (shm_path) { |
2596 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2597 | (const char *) shm_path); |
9e7c9f56 JR |
2598 | if (ret) { |
2599 | goto error; | |
2600 | } | |
2601 | } | |
2602 | ||
dcf266c0 JG |
2603 | for (node = xmlFirstElementChild(domains_node); node; |
2604 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2605 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2606 | if (ret) { |
2607 | goto end; | |
2608 | } | |
2609 | } | |
2610 | ||
2611 | if (started) { | |
d324faf7 | 2612 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2613 | if (ret) { |
2614 | goto end; | |
2615 | } | |
2616 | } | |
c2da8cde | 2617 | |
dcf266c0 | 2618 | end: |
b2579dc1 | 2619 | if (ret < 0) { |
d324faf7 JG |
2620 | ERR("Failed to load session %s: %s", (const char *) name, |
2621 | lttng_strerror(ret)); | |
2622 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2623 | } |
2624 | ||
c2da8cde | 2625 | error: |
dcf266c0 JG |
2626 | free(kernel_domain); |
2627 | free(ust_domain); | |
2628 | free(jul_domain); | |
5cdb6027 | 2629 | free(log4j_domain); |
135a3893 | 2630 | free(python_domain); |
d324faf7 | 2631 | xmlFree(name); |
9e7c9f56 | 2632 | xmlFree(shm_path); |
dcf266c0 JG |
2633 | return ret; |
2634 | } | |
2635 | ||
cf53c06d DG |
2636 | /* |
2637 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2638 | * Return -1 if the path is EPERM. | |
2639 | */ | |
2640 | static int validate_file_read_creds(const char *path) | |
2641 | { | |
2642 | int ret; | |
2643 | ||
2644 | assert(path); | |
2645 | ||
2646 | /* Can we read the file. */ | |
2647 | ret = access(path, R_OK); | |
2648 | if (!ret) { | |
2649 | goto valid; | |
2650 | } | |
2651 | if (errno == EACCES) { | |
2652 | return -1; | |
2653 | } else { | |
2654 | /* Invalid. */ | |
2655 | return 0; | |
2656 | } | |
2657 | valid: | |
2658 | return 1; | |
2659 | } | |
2660 | ||
dcf266c0 JG |
2661 | static |
2662 | int load_session_from_file(const char *path, const char *session_name, | |
2663 | struct session_config_validation_ctx *validation_ctx, int override) | |
2664 | { | |
2665 | int ret, session_found = !session_name; | |
2666 | xmlDocPtr doc = NULL; | |
2667 | xmlNodePtr sessions_node; | |
2668 | xmlNodePtr session_node; | |
dcf266c0 JG |
2669 | |
2670 | assert(path); | |
2671 | assert(validation_ctx); | |
2672 | ||
cf53c06d DG |
2673 | ret = validate_file_read_creds(path); |
2674 | if (ret != 1) { | |
2675 | if (ret == -1) { | |
2676 | ret = -LTTNG_ERR_EPERM; | |
2677 | } else { | |
2678 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2679 | } | |
dcf266c0 JG |
2680 | goto end; |
2681 | } | |
2682 | ||
2683 | doc = xmlParseFile(path); | |
2684 | if (!doc) { | |
2685 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2686 | goto end; | |
2687 | } | |
2688 | ||
2689 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2690 | if (ret) { | |
2691 | ERR("Session configuration file validation failed"); | |
2692 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2693 | goto end; | |
2694 | } | |
2695 | ||
2696 | sessions_node = xmlDocGetRootElement(doc); | |
2697 | if (!sessions_node) { | |
2698 | goto end; | |
2699 | } | |
2700 | ||
2701 | for (session_node = xmlFirstElementChild(sessions_node); | |
2702 | session_node; session_node = | |
2703 | xmlNextElementSibling(session_node)) { | |
2704 | ret = process_session_node(session_node, | |
2705 | session_name, override); | |
2706 | if (session_name && ret == 0) { | |
2707 | /* Target session found and loaded */ | |
2708 | session_found = 1; | |
2709 | break; | |
2710 | } | |
2711 | } | |
2712 | end: | |
2713 | xmlFreeDoc(doc); | |
2714 | if (!ret) { | |
a96bc65d | 2715 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2716 | } |
2717 | return ret; | |
2718 | } | |
2719 | ||
60f70355 JG |
2720 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2721 | static | |
2722 | struct dirent *alloc_dirent(const char *path) | |
2723 | { | |
2724 | size_t len; | |
2725 | long name_max; | |
2726 | struct dirent *entry; | |
2727 | ||
2728 | name_max = pathconf(path, _PC_NAME_MAX); | |
2729 | if (name_max == -1) { | |
2730 | name_max = PATH_MAX; | |
2731 | } | |
2732 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2733 | entry = zmalloc(len); | |
2734 | return entry; | |
2735 | } | |
2736 | ||
dcf266c0 JG |
2737 | static |
2738 | int load_session_from_path(const char *path, const char *session_name, | |
2739 | struct session_config_validation_ctx *validation_ctx, int override) | |
2740 | { | |
2741 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2742 | DIR *directory = NULL; |
2743 | ||
2744 | assert(path); | |
2745 | assert(validation_ctx); | |
2746 | ||
4af16958 DG |
2747 | directory = opendir(path); |
2748 | if (!directory) { | |
11143783 DG |
2749 | switch (errno) { |
2750 | case ENOTDIR: | |
0f0a81b5 DG |
2751 | /* Try the file loading. */ |
2752 | break; | |
11143783 DG |
2753 | case ENOENT: |
2754 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2755 | goto end; | |
2756 | default: | |
0f0a81b5 DG |
2757 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2758 | goto end; | |
4af16958 | 2759 | } |
dcf266c0 | 2760 | } |
4af16958 | 2761 | if (directory) { |
dcf266c0 JG |
2762 | struct dirent *entry; |
2763 | struct dirent *result; | |
2764 | char *file_path = NULL; | |
2765 | size_t path_len = strlen(path); | |
2766 | ||
2767 | if (path_len >= PATH_MAX) { | |
2768 | ret = -LTTNG_ERR_INVALID; | |
2769 | goto end; | |
2770 | } | |
2771 | ||
60f70355 | 2772 | entry = alloc_dirent(path); |
dcf266c0 JG |
2773 | if (!entry) { |
2774 | ret = -LTTNG_ERR_NOMEM; | |
2775 | goto end; | |
2776 | } | |
2777 | ||
dcf266c0 JG |
2778 | file_path = zmalloc(PATH_MAX); |
2779 | if (!file_path) { | |
2780 | ret = -LTTNG_ERR_NOMEM; | |
2781 | free(entry); | |
2782 | goto end; | |
2783 | } | |
2784 | ||
2785 | strncpy(file_path, path, path_len); | |
2786 | if (file_path[path_len - 1] != '/') { | |
2787 | file_path[path_len++] = '/'; | |
2788 | } | |
2789 | ||
4af16958 | 2790 | ret = 0; |
dcf266c0 JG |
2791 | /* Search for *.lttng files */ |
2792 | while (!readdir_r(directory, entry, &result) && result) { | |
2793 | size_t file_name_len = strlen(result->d_name); | |
2794 | ||
2795 | if (file_name_len <= | |
2796 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2797 | continue; | |
2798 | } | |
2799 | ||
431f702e | 2800 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2801 | continue; |
2802 | } | |
2803 | ||
2804 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2805 | result->d_name + file_name_len - sizeof( | |
2806 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2807 | continue; | |
2808 | } | |
2809 | ||
2810 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2811 | file_path[path_len + file_name_len] = '\0'; | |
2812 | ||
2813 | ret = load_session_from_file(file_path, session_name, | |
2814 | validation_ctx, override); | |
2815 | if (session_name && !ret) { | |
2816 | session_found = 1; | |
2817 | break; | |
2818 | } | |
2819 | } | |
2820 | ||
2821 | free(entry); | |
2822 | free(file_path); | |
2823 | } else { | |
2824 | ret = load_session_from_file(path, session_name, | |
2825 | validation_ctx, override); | |
2826 | if (ret) { | |
2827 | goto end; | |
2828 | } else { | |
2829 | session_found = 1; | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | end: | |
2834 | if (directory) { | |
2835 | if (closedir(directory)) { | |
2836 | PERROR("closedir"); | |
2837 | } | |
2838 | } | |
2839 | ||
2840 | if (!session_found) { | |
a96bc65d | 2841 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2842 | } |
2843 | ||
2844 | return ret; | |
2845 | } | |
2846 | ||
ab38c13f DG |
2847 | /* |
2848 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2849 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2850 | */ |
2851 | static int validate_path_creds(const char *path) | |
2852 | { | |
2853 | int ret, uid = getuid(); | |
2854 | struct stat buf; | |
2855 | ||
2856 | assert(path); | |
2857 | ||
cf53c06d | 2858 | if (uid == 0) { |
ab38c13f DG |
2859 | goto valid; |
2860 | } | |
2861 | ||
2862 | ret = stat(path, &buf); | |
2863 | if (ret < 0) { | |
2864 | if (errno != ENOENT) { | |
2865 | PERROR("stat"); | |
2866 | } | |
2867 | ret = -LTTNG_ERR_INVALID; | |
2868 | goto valid; | |
2869 | } | |
2870 | ||
2871 | if (buf.st_uid != uid) { | |
2872 | goto invalid; | |
2873 | } | |
2874 | ||
2875 | valid: | |
ab38c13f | 2876 | return 1; |
cf53c06d DG |
2877 | invalid: |
2878 | return 0; | |
ab38c13f DG |
2879 | } |
2880 | ||
dcf266c0 JG |
2881 | LTTNG_HIDDEN |
2882 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2883 | int override, unsigned int autoload) |
dcf266c0 JG |
2884 | { |
2885 | int ret; | |
cf53c06d | 2886 | const char *path_ptr = NULL; |
dcf266c0 JG |
2887 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2888 | ||
2889 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2890 | if (ret) { | |
2891 | goto end; | |
2892 | } | |
2893 | ||
2894 | if (!path) { | |
ab38c13f DG |
2895 | char *home_path; |
2896 | const char *sys_path; | |
2897 | ||
dcf266c0 | 2898 | /* Try home path */ |
ab38c13f | 2899 | home_path = utils_get_home_dir(); |
dcf266c0 | 2900 | if (home_path) { |
ab38c13f | 2901 | char path[PATH_MAX]; |
dcf266c0 | 2902 | |
d4fcf703 DG |
2903 | /* |
2904 | * Try user session configuration path. Ignore error here so we can | |
2905 | * continue loading the system wide sessions. | |
2906 | */ | |
ab38c13f DG |
2907 | if (autoload) { |
2908 | ret = snprintf(path, sizeof(path), | |
2909 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2910 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2911 | if (ret < 0) { |
2912 | PERROR("snprintf session autoload home config path"); | |
2913 | goto end; | |
2914 | } | |
2915 | ||
2916 | /* | |
2917 | * Credentials are only validated for the autoload in order to | |
2918 | * avoid any user session daemon to try to load kernel sessions | |
2919 | * automatically and failing all the times. | |
2920 | */ | |
2921 | ret = validate_path_creds(path); | |
2922 | if (ret) { | |
2923 | path_ptr = path; | |
2924 | } | |
ab38c13f DG |
2925 | } else { |
2926 | ret = snprintf(path, sizeof(path), | |
2927 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2928 | if (ret < 0) { |
2929 | PERROR("snprintf session home config path"); | |
2930 | goto end; | |
2931 | } | |
2932 | path_ptr = path; | |
ab38c13f | 2933 | } |
cf53c06d DG |
2934 | if (path_ptr) { |
2935 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2936 | &validation_ctx, override); |
2937 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2938 | goto end; | |
2939 | } | |
2940 | /* | |
2941 | * Continue even if the session was found since we have to try | |
2942 | * the system wide sessions. | |
2943 | */ | |
ab38c13f | 2944 | } |
d4fcf703 | 2945 | } |
ab38c13f | 2946 | |
cf53c06d DG |
2947 | /* Reset path pointer for the system wide dir. */ |
2948 | path_ptr = NULL; | |
2949 | ||
d4fcf703 DG |
2950 | /* Try system wide configuration directory. */ |
2951 | if (autoload) { | |
2952 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2953 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2954 | ret = validate_path_creds(sys_path); |
2955 | if (ret) { | |
2956 | path_ptr = sys_path; | |
2957 | } | |
d4fcf703 | 2958 | } else { |
cf53c06d DG |
2959 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2960 | path_ptr = sys_path; | |
d4fcf703 DG |
2961 | } |
2962 | ||
cf53c06d DG |
2963 | if (path_ptr) { |
2964 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2965 | &validation_ctx, override); |
dcf266c0 JG |
2966 | } |
2967 | } else { | |
2968 | ret = access(path, F_OK); | |
2969 | if (ret < 0) { | |
2970 | PERROR("access"); | |
2971 | switch (errno) { | |
2972 | case ENOENT: | |
2973 | ret = -LTTNG_ERR_INVALID; | |
2974 | WARN("Session configuration path does not exist."); | |
2975 | break; | |
2976 | case EACCES: | |
2977 | ret = -LTTNG_ERR_EPERM; | |
2978 | break; | |
2979 | default: | |
2980 | ret = -LTTNG_ERR_UNK; | |
2981 | break; | |
2982 | } | |
2983 | goto end; | |
2984 | } | |
2985 | ||
2986 | ret = load_session_from_path(path, session_name, | |
2987 | &validation_ctx, override); | |
2988 | } | |
2989 | end: | |
2990 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2991 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2992 | /* | |
2993 | * Don't report an error if no sessions are found when called | |
2994 | * without a session_name or a search path. | |
2995 | */ | |
2996 | ret = 0; | |
2997 | } | |
dcf266c0 JG |
2998 | return ret; |
2999 | } |