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"; | |
fb83fe64 JD |
98 | const char * const config_element_discarded_events = "discarded_events"; |
99 | 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"; | |
045fc617 JG |
104 | const char * const config_element_context_perf = "perf"; |
105 | const char * const config_element_context_app = "app"; | |
106 | const char * const config_element_context_app_provider_name = "provider_name"; | |
107 | 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"; | |
7b4aa11d | 114 | 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"; |
045fc617 JG |
174 | const char * const config_event_context_app = "APP"; |
175 | ||
fb198a11 | 176 | |
dcf266c0 JG |
177 | struct consumer_output { |
178 | int enabled; | |
179 | char *path; | |
180 | char *control_uri; | |
181 | char *data_uri; | |
182 | }; | |
183 | ||
1501a7f3 JG |
184 | static int config_entry_handler_filter(struct handler_filter_args *args, |
185 | const char *section, const char *name, const char *value) | |
186 | { | |
187 | int ret = 0; | |
188 | struct config_entry entry = { section, name, value }; | |
189 | ||
190 | assert(args); | |
191 | ||
192 | if (!section || !name || !value) { | |
193 | ret = -EIO; | |
194 | goto end; | |
195 | } | |
196 | ||
197 | if (args->section) { | |
198 | if (strcmp(args->section, section)) { | |
199 | goto end; | |
200 | } | |
201 | } | |
202 | ||
203 | ret = args->handler(&entry, args->user_data); | |
204 | end: | |
205 | return ret; | |
206 | } | |
207 | ||
208 | LTTNG_HIDDEN | |
209 | int config_get_section_entries(const char *override_path, const char *section, | |
210 | config_entry_handler_cb handler, void *user_data) | |
211 | { | |
212 | int ret = 0; | |
7ab02a27 | 213 | char *path; |
1501a7f3 JG |
214 | FILE *config_file = NULL; |
215 | struct handler_filter_args filter = { section, handler, user_data }; | |
216 | ||
7ab02a27 DG |
217 | /* First, try system-wide conf. file. */ |
218 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
219 | ||
220 | config_file = fopen(path, "r"); | |
221 | if (config_file) { | |
222 | DBG("Loading daemon conf file at %s", path); | |
223 | /* | |
224 | * Return value is not very important here since error or not, we | |
225 | * continue and try the next possible conf. file. | |
226 | */ | |
227 | (void) ini_parse_file(config_file, | |
228 | (ini_entry_handler) config_entry_handler_filter, | |
229 | (void *) &filter); | |
230 | fclose(config_file); | |
231 | } | |
232 | ||
233 | /* Second is the user local configuration. */ | |
234 | path = utils_get_home_dir(); | |
235 | if (path) { | |
236 | char fullpath[PATH_MAX]; | |
237 | ||
238 | ret = snprintf(fullpath, sizeof(fullpath), | |
239 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
240 | if (ret < 0) { | |
241 | PERROR("snprintf user conf. path"); | |
242 | goto error; | |
243 | } | |
244 | ||
245 | config_file = fopen(fullpath, "r"); | |
246 | if (config_file) { | |
247 | DBG("Loading daemon user conf file at %s", path); | |
248 | /* | |
249 | * Return value is not very important here since error or not, we | |
250 | * continue and try the next possible conf. file. | |
251 | */ | |
252 | (void) ini_parse_file(config_file, | |
253 | (ini_entry_handler) config_entry_handler_filter, | |
254 | (void *) &filter); | |
255 | fclose(config_file); | |
256 | } | |
257 | } | |
258 | ||
259 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
260 | if (override_path) { |
261 | config_file = fopen(override_path, "r"); | |
262 | if (config_file) { | |
7ab02a27 DG |
263 | DBG("Loading daemon command line conf file at %s", override_path); |
264 | (void) ini_parse_file(config_file, | |
265 | (ini_entry_handler) config_entry_handler_filter, | |
266 | (void *) &filter); | |
267 | fclose(config_file); | |
1501a7f3 JG |
268 | } else { |
269 | ERR("Failed to open daemon configuration file at %s", | |
270 | override_path); | |
271 | ret = -ENOENT; | |
7ab02a27 | 272 | goto error; |
1501a7f3 JG |
273 | } |
274 | } | |
275 | ||
7ab02a27 DG |
276 | /* Everything went well. */ |
277 | ret = 0; | |
1501a7f3 | 278 | |
7ab02a27 | 279 | error: |
1501a7f3 JG |
280 | return ret; |
281 | } | |
282 | ||
283 | LTTNG_HIDDEN | |
284 | int config_parse_value(const char *value) | |
285 | { | |
286 | int i, ret = 0; | |
287 | char *endptr, *lower_str; | |
288 | size_t len; | |
289 | unsigned long v; | |
290 | ||
291 | len = strlen(value); | |
292 | if (!len) { | |
293 | ret = -1; | |
294 | goto end; | |
295 | } | |
296 | ||
297 | v = strtoul(value, &endptr, 10); | |
298 | if (endptr != value) { | |
299 | ret = v; | |
300 | goto end; | |
301 | } | |
302 | ||
303 | lower_str = zmalloc(len + 1); | |
304 | if (!lower_str) { | |
305 | PERROR("zmalloc"); | |
306 | ret = -errno; | |
307 | goto end; | |
308 | } | |
309 | ||
310 | for (i = 0; i < len; i++) { | |
311 | lower_str[i] = tolower(value[i]); | |
312 | } | |
313 | ||
314 | if (!strcmp(lower_str, config_str_yes) || | |
315 | !strcmp(lower_str, config_str_true) || | |
316 | !strcmp(lower_str, config_str_on)) { | |
317 | ret = 1; | |
318 | } else if (!strcmp(lower_str, config_str_no) || | |
319 | !strcmp(lower_str, config_str_false) || | |
320 | !strcmp(lower_str, config_str_off)) { | |
321 | ret = 0; | |
322 | } else { | |
323 | ret = -1; | |
324 | } | |
325 | ||
326 | free(lower_str); | |
327 | end: | |
328 | return ret; | |
329 | } | |
36f2332b JG |
330 | |
331 | /* | |
332 | * Returns a xmlChar string which must be released using xmlFree(). | |
333 | */ | |
334 | static xmlChar *encode_string(const char *in_str) | |
335 | { | |
336 | xmlChar *out_str = NULL; | |
337 | xmlCharEncodingHandlerPtr handler; | |
338 | int out_len, ret, in_len; | |
339 | ||
340 | assert(in_str); | |
341 | ||
342 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
343 | if (!handler) { | |
344 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
345 | goto end; | |
346 | } | |
347 | ||
348 | in_len = strlen(in_str); | |
349 | /* | |
f76d886f JG |
350 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
351 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 352 | */ |
f76d886f | 353 | out_len = (in_len * 4) + 1; |
36f2332b JG |
354 | out_str = xmlMalloc(out_len); |
355 | if (!out_str) { | |
356 | goto end; | |
357 | } | |
358 | ||
359 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
360 | if (ret < 0) { | |
361 | xmlFree(out_str); | |
362 | out_str = NULL; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | /* out_len is now the size of out_str */ | |
367 | out_str[out_len] = '\0'; | |
368 | end: | |
369 | return out_str; | |
370 | } | |
371 | ||
372 | LTTNG_HIDDEN | |
705bb62f | 373 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
374 | { |
375 | int ret; | |
376 | struct config_writer *writer; | |
377 | xmlOutputBufferPtr buffer; | |
378 | ||
379 | writer = zmalloc(sizeof(struct config_writer)); | |
380 | if (!writer) { | |
381 | PERROR("zmalloc config_writer_create"); | |
382 | goto end; | |
383 | } | |
384 | ||
385 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
386 | if (!buffer) { | |
387 | goto error_destroy; | |
388 | } | |
389 | ||
390 | writer->writer = xmlNewTextWriter(buffer); | |
391 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
392 | config_xml_encoding, NULL); | |
393 | if (ret < 0) { | |
394 | goto error_destroy; | |
395 | } | |
396 | ||
397 | ret = xmlTextWriterSetIndentString(writer->writer, | |
398 | BAD_CAST config_xml_indent_string); | |
705bb62f | 399 | if (ret) { |
36f2332b JG |
400 | goto error_destroy; |
401 | } | |
402 | ||
705bb62f JRJ |
403 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
404 | if (ret) { | |
36f2332b JG |
405 | goto error_destroy; |
406 | } | |
407 | ||
408 | end: | |
409 | return writer; | |
410 | error_destroy: | |
411 | config_writer_destroy(writer); | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | LTTNG_HIDDEN | |
416 | int config_writer_destroy(struct config_writer *writer) | |
417 | { | |
418 | int ret = 0; | |
419 | ||
420 | if (!writer) { | |
421 | ret = -EINVAL; | |
422 | goto end; | |
423 | } | |
424 | ||
425 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
426 | WARN("Could not close XML document"); | |
427 | ret = -EIO; | |
428 | } | |
429 | ||
430 | if (writer->writer) { | |
431 | xmlFreeTextWriter(writer->writer); | |
432 | } | |
433 | ||
434 | free(writer); | |
435 | end: | |
436 | return ret; | |
437 | } | |
438 | ||
439 | LTTNG_HIDDEN | |
440 | int config_writer_open_element(struct config_writer *writer, | |
441 | const char *element_name) | |
442 | { | |
443 | int ret; | |
444 | xmlChar *encoded_element_name; | |
445 | ||
446 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
447 | ret = -1; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | encoded_element_name = encode_string(element_name); | |
452 | if (!encoded_element_name) { | |
453 | ret = -1; | |
454 | goto end; | |
455 | } | |
456 | ||
457 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
458 | xmlFree(encoded_element_name); | |
459 | end: | |
28676a1d | 460 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
461 | } |
462 | ||
e10b6a1c JG |
463 | LTTNG_HIDDEN |
464 | int config_writer_write_attribute(struct config_writer *writer, | |
465 | const char *name, const char *value) | |
466 | { | |
467 | int ret; | |
468 | xmlChar *encoded_name = NULL; | |
469 | xmlChar *encoded_value = NULL; | |
470 | ||
471 | if (!writer || !writer->writer || !name || !name[0]) { | |
472 | ret = -1; | |
473 | goto end; | |
474 | } | |
475 | ||
476 | encoded_name = encode_string(name); | |
477 | if (!encoded_name) { | |
478 | ret = -1; | |
479 | goto end; | |
480 | } | |
481 | ||
482 | encoded_value = encode_string(value); | |
483 | if (!encoded_value) { | |
484 | ret = -1; | |
485 | goto end; | |
486 | } | |
487 | ||
488 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
489 | encoded_value); | |
490 | end: | |
491 | xmlFree(encoded_name); | |
492 | xmlFree(encoded_value); | |
493 | return ret >= 0 ? 0 : ret; | |
494 | } | |
495 | ||
36f2332b JG |
496 | LTTNG_HIDDEN |
497 | int config_writer_close_element(struct config_writer *writer) | |
498 | { | |
499 | int ret; | |
500 | ||
501 | if (!writer || !writer->writer) { | |
502 | ret = -1; | |
503 | goto end; | |
504 | } | |
505 | ||
506 | ret = xmlTextWriterEndElement(writer->writer); | |
507 | end: | |
28676a1d | 508 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
509 | } |
510 | ||
511 | LTTNG_HIDDEN | |
512 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
513 | const char *element_name, uint64_t value) | |
514 | { | |
515 | int ret; | |
516 | xmlChar *encoded_element_name; | |
517 | ||
518 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
519 | ret = -1; | |
520 | goto end; | |
521 | } | |
522 | ||
523 | encoded_element_name = encode_string(element_name); | |
524 | if (!encoded_element_name) { | |
525 | ret = -1; | |
526 | goto end; | |
527 | } | |
528 | ||
529 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
530 | encoded_element_name, "%" PRIu64, value); | |
531 | xmlFree(encoded_element_name); | |
532 | end: | |
28676a1d | 533 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
534 | } |
535 | ||
536 | LTTNG_HIDDEN | |
537 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
538 | const char *element_name, int64_t value) | |
539 | { | |
540 | int ret; | |
541 | xmlChar *encoded_element_name; | |
542 | ||
543 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
544 | ret = -1; | |
545 | goto end; | |
546 | } | |
547 | ||
548 | encoded_element_name = encode_string(element_name); | |
549 | if (!encoded_element_name) { | |
550 | ret = -1; | |
551 | goto end; | |
552 | } | |
553 | ||
554 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
555 | encoded_element_name, "%" PRIi64, value); | |
556 | xmlFree(encoded_element_name); | |
557 | end: | |
28676a1d | 558 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
559 | } |
560 | ||
561 | LTTNG_HIDDEN | |
562 | int config_writer_write_element_bool(struct config_writer *writer, | |
563 | const char *element_name, int value) | |
564 | { | |
565 | return config_writer_write_element_string(writer, element_name, | |
566 | value ? config_xml_true : config_xml_false); | |
567 | } | |
568 | ||
569 | LTTNG_HIDDEN | |
570 | int config_writer_write_element_string(struct config_writer *writer, | |
571 | const char *element_name, const char *value) | |
572 | { | |
573 | int ret; | |
574 | xmlChar *encoded_element_name = NULL; | |
575 | xmlChar *encoded_value = NULL; | |
576 | ||
577 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
578 | !value) { | |
579 | ret = -1; | |
580 | goto end; | |
581 | } | |
582 | ||
583 | encoded_element_name = encode_string(element_name); | |
584 | if (!encoded_element_name) { | |
585 | ret = -1; | |
586 | goto end; | |
587 | } | |
588 | ||
589 | encoded_value = encode_string(value); | |
590 | if (!encoded_value) { | |
591 | ret = -1; | |
592 | goto end; | |
593 | } | |
594 | ||
595 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 596 | encoded_value); |
36f2332b JG |
597 | end: |
598 | xmlFree(encoded_element_name); | |
599 | xmlFree(encoded_value); | |
28676a1d | 600 | return ret >= 0 ? 0 : ret; |
36f2332b | 601 | } |
dcf266c0 JG |
602 | |
603 | static | |
604 | void xml_error_handler(void *ctx, const char *format, ...) | |
605 | { | |
606 | char *errMsg; | |
607 | va_list args; | |
608 | int ret; | |
609 | ||
610 | va_start(args, format); | |
611 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 612 | va_end(args); |
dcf266c0 JG |
613 | if (ret == -1) { |
614 | ERR("String allocation failed in xml error handler"); | |
615 | return; | |
616 | } | |
dcf266c0 JG |
617 | |
618 | fprintf(stderr, "XML Error: %s", errMsg); | |
619 | free(errMsg); | |
620 | } | |
621 | ||
622 | static | |
623 | void fini_session_config_validation_ctx( | |
624 | struct session_config_validation_ctx *ctx) | |
625 | { | |
626 | if (ctx->parser_ctx) { | |
627 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
628 | } | |
629 | ||
630 | if (ctx->schema) { | |
631 | xmlSchemaFree(ctx->schema); | |
632 | } | |
633 | ||
634 | if (ctx->schema_validation_ctx) { | |
635 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
636 | } | |
637 | ||
638 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
639 | } | |
640 | ||
54e399cb JG |
641 | static |
642 | char *get_session_config_xsd_path() | |
643 | { | |
644 | char *xsd_path; | |
e8fa9fb0 | 645 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
646 | size_t base_path_len; |
647 | size_t max_path_len; | |
648 | ||
649 | if (!base_path) { | |
650 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
651 | } | |
652 | ||
653 | base_path_len = strlen(base_path); | |
654 | max_path_len = base_path_len + | |
655 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
656 | xsd_path = zmalloc(max_path_len); | |
657 | if (!xsd_path) { | |
658 | goto end; | |
659 | } | |
660 | ||
661 | strncpy(xsd_path, base_path, max_path_len); | |
662 | if (xsd_path[base_path_len - 1] != '/') { | |
663 | xsd_path[base_path_len++] = '/'; | |
664 | } | |
665 | ||
666 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
667 | max_path_len - base_path_len); | |
668 | end: | |
669 | return xsd_path; | |
670 | } | |
671 | ||
dcf266c0 JG |
672 | static |
673 | int init_session_config_validation_ctx( | |
674 | struct session_config_validation_ctx *ctx) | |
675 | { | |
676 | int ret; | |
54e399cb JG |
677 | char *xsd_path = get_session_config_xsd_path(); |
678 | ||
679 | if (!xsd_path) { | |
680 | ret = -LTTNG_ERR_NOMEM; | |
681 | goto end; | |
682 | } | |
dcf266c0 | 683 | |
54e399cb | 684 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
685 | if (!ctx->parser_ctx) { |
686 | ERR("XSD parser context creation failed"); | |
687 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
688 | goto end; | |
689 | } | |
690 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
691 | xml_error_handler, NULL); | |
692 | ||
693 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
694 | if (!ctx->schema) { | |
695 | ERR("XSD parsing failed"); | |
696 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
697 | goto end; | |
698 | } | |
699 | ||
700 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
701 | if (!ctx->schema_validation_ctx) { | |
702 | ERR("XSD validation context creation failed"); | |
703 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
704 | goto end; | |
705 | } | |
706 | ||
707 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
708 | xml_error_handler, NULL); | |
709 | ret = 0; | |
710 | ||
711 | end: | |
712 | if (ret) { | |
713 | fini_session_config_validation_ctx(ctx); | |
714 | } | |
715 | ||
54e399cb | 716 | free(xsd_path); |
dcf266c0 JG |
717 | return ret; |
718 | } | |
719 | ||
720 | static | |
721 | int parse_uint(xmlChar *str, uint64_t *val) | |
722 | { | |
723 | int ret; | |
724 | char *endptr; | |
725 | ||
726 | if (!str || !val) { | |
727 | ret = -1; | |
728 | goto end; | |
729 | } | |
730 | ||
731 | *val = strtoull((const char *) str, &endptr, 10); | |
732 | if (!endptr || *endptr) { | |
733 | ret = -1; | |
734 | } else { | |
735 | ret = 0; | |
736 | } | |
737 | ||
738 | end: | |
739 | return ret; | |
740 | } | |
741 | ||
742 | static | |
743 | int parse_int(xmlChar *str, int64_t *val) | |
744 | { | |
745 | int ret; | |
746 | char *endptr; | |
747 | ||
748 | if (!str || !val) { | |
749 | ret = -1; | |
750 | goto end; | |
751 | } | |
752 | ||
753 | *val = strtoll((const char *) str, &endptr, 10); | |
754 | if (!endptr || *endptr) { | |
755 | ret = -1; | |
756 | } else { | |
757 | ret = 0; | |
758 | } | |
759 | ||
760 | end: | |
761 | return ret; | |
762 | } | |
763 | ||
764 | static | |
765 | int parse_bool(xmlChar *str, int *val) | |
766 | { | |
767 | int ret = 0; | |
768 | ||
769 | if (!str || !val) { | |
770 | ret = -1; | |
771 | goto end; | |
772 | } | |
773 | ||
774 | if (!strcmp((const char *) str, config_xml_true)) { | |
775 | *val = 1; | |
776 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
777 | *val = 0; | |
778 | } else { | |
779 | WARN("Invalid boolean value encoutered (%s).", | |
780 | (const char *) str); | |
781 | ret = -1; | |
782 | } | |
783 | end: | |
784 | return ret; | |
785 | } | |
786 | ||
787 | static | |
788 | int get_domain_type(xmlChar *domain) | |
789 | { | |
790 | int ret; | |
791 | ||
792 | if (!domain) { | |
793 | goto error; | |
794 | } | |
795 | ||
796 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
797 | ret = LTTNG_DOMAIN_KERNEL; | |
798 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
799 | ret = LTTNG_DOMAIN_UST; | |
800 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
801 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
802 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
803 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
804 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
805 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
806 | } else { |
807 | goto error; | |
808 | } | |
809 | ||
810 | return ret; | |
811 | error: | |
812 | return -1; | |
813 | } | |
814 | ||
815 | static | |
816 | int get_buffer_type(xmlChar *buffer_type) | |
817 | { | |
818 | int ret; | |
819 | ||
820 | if (!buffer_type) { | |
821 | goto error; | |
822 | } | |
823 | ||
824 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
825 | ret = LTTNG_BUFFER_GLOBAL; | |
826 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
827 | ret = LTTNG_BUFFER_PER_UID; | |
828 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
829 | ret = LTTNG_BUFFER_PER_PID; | |
830 | } else { | |
831 | goto error; | |
832 | } | |
833 | ||
834 | return ret; | |
835 | error: | |
836 | return -1; | |
837 | } | |
838 | ||
839 | static | |
840 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
841 | { | |
842 | int ret; | |
843 | ||
844 | if (!overwrite_mode) { | |
845 | goto error; | |
846 | } | |
847 | ||
848 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
849 | ret = 1; | |
850 | } else if (!strcmp((char *) overwrite_mode, | |
851 | config_overwrite_mode_discard)) { | |
852 | ret = 0; | |
853 | } else { | |
854 | goto error; | |
855 | } | |
856 | ||
857 | return ret; | |
858 | error: | |
859 | return -1; | |
860 | } | |
861 | ||
862 | static | |
863 | int get_output_type(xmlChar *output_type) | |
864 | { | |
865 | int ret; | |
866 | ||
867 | if (!output_type) { | |
868 | goto error; | |
869 | } | |
870 | ||
871 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
872 | ret = LTTNG_EVENT_MMAP; | |
873 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
874 | ret = LTTNG_EVENT_SPLICE; | |
875 | } else { | |
876 | goto error; | |
877 | } | |
878 | ||
879 | return ret; | |
880 | error: | |
881 | return -1; | |
882 | } | |
883 | ||
884 | static | |
885 | int get_event_type(xmlChar *event_type) | |
886 | { | |
887 | int ret; | |
888 | ||
889 | if (!event_type) { | |
890 | goto error; | |
891 | } | |
892 | ||
893 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
894 | ret = LTTNG_EVENT_ALL; | |
895 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
896 | ret = LTTNG_EVENT_TRACEPOINT; | |
897 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
898 | ret = LTTNG_EVENT_PROBE; | |
899 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
900 | ret = LTTNG_EVENT_FUNCTION; | |
901 | } else if (!strcmp((char *) event_type, | |
902 | config_event_type_function_entry)) { | |
903 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
904 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
905 | ret = LTTNG_EVENT_NOOP; | |
906 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
907 | ret = LTTNG_EVENT_SYSCALL; | |
908 | } else { | |
909 | goto error; | |
910 | } | |
911 | ||
912 | return ret; | |
913 | error: | |
914 | return -1; | |
915 | } | |
916 | ||
917 | static | |
918 | int get_loglevel_type(xmlChar *loglevel_type) | |
919 | { | |
920 | int ret; | |
921 | ||
922 | if (!loglevel_type) { | |
923 | goto error; | |
924 | } | |
925 | ||
926 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
927 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
928 | } else if (!strcmp((char *) loglevel_type, | |
929 | config_loglevel_type_range)) { | |
930 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
931 | } else if (!strcmp((char *) loglevel_type, | |
932 | config_loglevel_type_single)) { | |
933 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
934 | } else { | |
935 | goto error; | |
936 | } | |
937 | ||
938 | return ret; | |
939 | error: | |
940 | return -1; | |
941 | } | |
942 | ||
943 | /* | |
944 | * Return the context type or -1 on error. | |
945 | */ | |
946 | static | |
947 | int get_context_type(xmlChar *context_type) | |
948 | { | |
949 | int ret; | |
950 | ||
951 | if (!context_type) { | |
952 | goto error; | |
953 | } | |
954 | ||
955 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
956 | ret = LTTNG_EVENT_CONTEXT_PID; | |
957 | } else if (!strcmp((char *) context_type, | |
958 | config_event_context_procname)) { | |
959 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
960 | } else if (!strcmp((char *) context_type, | |
961 | config_event_context_prio)) { | |
962 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
963 | } else if (!strcmp((char *) context_type, | |
964 | config_event_context_nice)) { | |
965 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
966 | } else if (!strcmp((char *) context_type, | |
967 | config_event_context_vpid)) { | |
968 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
969 | } else if (!strcmp((char *) context_type, | |
970 | config_event_context_tid)) { | |
971 | ret = LTTNG_EVENT_CONTEXT_TID; | |
972 | } else if (!strcmp((char *) context_type, | |
973 | config_event_context_vtid)) { | |
974 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
975 | } else if (!strcmp((char *) context_type, | |
976 | config_event_context_ppid)) { | |
977 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
978 | } else if (!strcmp((char *) context_type, | |
979 | config_event_context_vppid)) { | |
980 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
981 | } else if (!strcmp((char *) context_type, | |
982 | config_event_context_pthread_id)) { | |
983 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
984 | } else if (!strcmp((char *) context_type, | |
985 | config_event_context_hostname)) { | |
986 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
987 | } else if (!strcmp((char *) context_type, | |
988 | config_event_context_ip)) { | |
989 | ret = LTTNG_EVENT_CONTEXT_IP; | |
990 | } else { | |
991 | goto error; | |
992 | } | |
993 | ||
994 | return ret; | |
995 | error: | |
996 | return -1; | |
997 | } | |
998 | ||
999 | static | |
1000 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1001 | { | |
1002 | int ret; | |
1003 | xmlNodePtr node; | |
1004 | ||
1005 | for (node = xmlFirstElementChild(domain_node); node; | |
1006 | node = xmlNextElementSibling(node)) { | |
1007 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1008 | /* domain type */ | |
1009 | xmlChar *node_content = xmlNodeGetContent(node); | |
1010 | if (!node_content) { | |
1011 | ret = -LTTNG_ERR_NOMEM; | |
1012 | goto end; | |
1013 | } | |
1014 | ||
1015 | ret = get_domain_type(node_content); | |
1016 | free(node_content); | |
1017 | if (ret < 0) { | |
1018 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1019 | goto end; | |
1020 | } | |
1021 | ||
1022 | domain->type = ret; | |
1023 | } else if (!strcmp((const char *) node->name, | |
1024 | config_element_buffer_type)) { | |
1025 | /* buffer type */ | |
1026 | xmlChar *node_content = xmlNodeGetContent(node); | |
1027 | if (!node_content) { | |
1028 | ret = -LTTNG_ERR_NOMEM; | |
1029 | goto end; | |
1030 | } | |
1031 | ||
1032 | ret = get_buffer_type(node_content); | |
1033 | free(node_content); | |
1034 | if (ret < 0) { | |
1035 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1036 | goto end; | |
1037 | } | |
1038 | ||
1039 | domain->buf_type = ret; | |
1040 | } | |
1041 | } | |
1042 | ret = 0; | |
1043 | end: | |
1044 | return ret; | |
1045 | } | |
1046 | ||
1047 | static | |
1048 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1049 | char **data_uri) | |
1050 | { | |
1051 | xmlNodePtr node; | |
1052 | ||
1053 | for (node = xmlFirstElementChild(net_output_node); node; | |
1054 | node = xmlNextElementSibling(node)) { | |
1055 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1056 | /* control_uri */ | |
1057 | *control_uri = (char *) xmlNodeGetContent(node); | |
1058 | if (!*control_uri) { | |
1059 | break; | |
1060 | } | |
1061 | } else { | |
1062 | /* data_uri */ | |
1063 | *data_uri = (char *) xmlNodeGetContent(node); | |
1064 | if (!*data_uri) { | |
1065 | break; | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1071 | } | |
1072 | ||
1073 | static | |
1074 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1075 | struct consumer_output *output) | |
1076 | { | |
1077 | int ret; | |
1078 | xmlNodePtr node; | |
1079 | ||
1080 | assert(output); | |
1081 | ||
1082 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1083 | node = xmlNextElementSibling(node)) { | |
1084 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1085 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1086 | ||
1087 | /* enabled */ | |
1088 | if (!enabled_str) { | |
1089 | ret = -LTTNG_ERR_NOMEM; | |
1090 | goto end; | |
1091 | } | |
1092 | ||
1093 | ret = parse_bool(enabled_str, &output->enabled); | |
1094 | free(enabled_str); | |
1095 | if (ret) { | |
1096 | goto end; | |
1097 | } | |
1098 | } else { | |
1099 | xmlNodePtr output_type_node; | |
1100 | ||
1101 | /* destination */ | |
1102 | output_type_node = xmlFirstElementChild(node); | |
1103 | if (!output_type_node) { | |
1104 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1105 | goto end; | |
1106 | } | |
1107 | ||
1108 | if (!strcmp((const char *) output_type_node->name, | |
1109 | config_element_path)) { | |
1110 | /* path */ | |
1111 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1112 | if (!output->path) { | |
1113 | ret = -LTTNG_ERR_NOMEM; | |
1114 | goto end; | |
1115 | } | |
1116 | } else { | |
1117 | /* net_output */ | |
1118 | ret = get_net_output_uris(output_type_node, | |
1119 | &output->control_uri, &output->data_uri); | |
1120 | if (ret) { | |
1121 | goto end; | |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | } | |
1126 | ret = 0; | |
1127 | ||
1128 | end: | |
1129 | if (ret) { | |
1130 | free(output->path); | |
1131 | free(output->control_uri); | |
1132 | free(output->data_uri); | |
1133 | memset(output, 0, sizeof(struct consumer_output)); | |
1134 | } | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | static | |
1139 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1140 | const char *control_uri, const char *data_uri) | |
1141 | { | |
1142 | int ret; | |
1143 | struct lttng_handle *handle; | |
1144 | const char *uri = NULL; | |
1145 | ||
1146 | assert(name); | |
1147 | assert(domain); | |
1148 | ||
1149 | handle = lttng_create_handle(name, domain); | |
1150 | if (!handle) { | |
1151 | ret = -LTTNG_ERR_NOMEM; | |
1152 | goto end; | |
1153 | } | |
1154 | ||
1155 | if (!control_uri || !data_uri) { | |
1156 | uri = control_uri ? control_uri : data_uri; | |
1157 | control_uri = uri; | |
1158 | data_uri = uri; | |
1159 | } | |
1160 | ||
1161 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1162 | lttng_destroy_handle(handle); | |
1163 | end: | |
1164 | return ret; | |
1165 | } | |
1166 | ||
1167 | static | |
1168 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1169 | { | |
1170 | int ret; | |
1171 | xmlNodePtr node = NULL; | |
1172 | xmlNodePtr snapshot_output_list_node; | |
1173 | xmlNodePtr snapshot_output_node; | |
1174 | ||
1175 | assert(session_name); | |
1176 | ||
1177 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1178 | if (ret) { | |
1179 | goto end; | |
1180 | } | |
1181 | ||
1182 | if (!output_node) { | |
1183 | goto end; | |
1184 | } | |
1185 | ||
1186 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1187 | ||
1188 | /* Parse and create snapshot outputs */ | |
1189 | ||
1190 | for (snapshot_output_node = | |
1191 | xmlFirstElementChild(snapshot_output_list_node); | |
1192 | snapshot_output_node; snapshot_output_node = | |
1193 | xmlNextElementSibling(snapshot_output_node)) { | |
1194 | char *name = NULL; | |
1195 | uint64_t max_size = UINT64_MAX; | |
1196 | struct consumer_output output = { 0 }; | |
1197 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1198 | ||
1199 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1200 | node = xmlNextElementSibling(node)) { | |
1201 | if (!strcmp((const char *) node->name, | |
1202 | config_element_name)) { | |
1203 | /* name */ | |
1204 | name = (char *) xmlNodeGetContent(node); | |
1205 | if (!name) { | |
1206 | ret = -LTTNG_ERR_NOMEM; | |
1207 | goto error_snapshot_output; | |
1208 | } | |
1209 | } else if (!strcmp((const char *) node->name, | |
1210 | config_element_max_size)) { | |
1211 | xmlChar *content = xmlNodeGetContent(node); | |
1212 | ||
1213 | /* max_size */ | |
1214 | if (!content) { | |
1215 | ret = -LTTNG_ERR_NOMEM; | |
1216 | goto error_snapshot_output; | |
1217 | } | |
1218 | ret = parse_uint(content, &max_size); | |
1219 | free(content); | |
1220 | if (ret) { | |
1221 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1222 | goto error_snapshot_output; | |
1223 | } | |
1224 | } else { | |
1225 | /* consumer_output */ | |
1226 | ret = process_consumer_output(node, &output); | |
1227 | if (ret) { | |
1228 | goto error_snapshot_output; | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | snapshot_output = lttng_snapshot_output_create(); | |
1234 | if (!snapshot_output) { | |
1235 | ret = -LTTNG_ERR_NOMEM; | |
1236 | goto error_snapshot_output; | |
1237 | } | |
1238 | ||
1239 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1240 | if (ret) { | |
1241 | goto error_snapshot_output; | |
1242 | } | |
1243 | ||
1244 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1245 | if (ret) { | |
1246 | goto error_snapshot_output; | |
1247 | } | |
1248 | ||
1249 | if (output.path) { | |
1250 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1251 | snapshot_output); | |
1252 | if (ret) { | |
1253 | goto error_snapshot_output; | |
1254 | } | |
1255 | } else { | |
1256 | if (output.control_uri) { | |
1257 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1258 | snapshot_output); | |
1259 | if (ret) { | |
1260 | goto error_snapshot_output; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | if (output.data_uri) { | |
1265 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1266 | snapshot_output); | |
1267 | if (ret) { | |
1268 | goto error_snapshot_output; | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1274 | error_snapshot_output: | |
1275 | free(name); | |
1276 | free(output.path); | |
1277 | free(output.control_uri); | |
1278 | free(output.data_uri); | |
1279 | lttng_snapshot_output_destroy(snapshot_output); | |
1280 | if (ret) { | |
1281 | goto end; | |
1282 | } | |
1283 | } | |
1284 | end: | |
1285 | return ret; | |
1286 | } | |
1287 | ||
1288 | static | |
1289 | int create_session(const char *name, | |
1290 | struct lttng_domain *kernel_domain, | |
1291 | struct lttng_domain *ust_domain, | |
1292 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1293 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1294 | xmlNodePtr output_node, |
1295 | uint64_t live_timer_interval) | |
1296 | { | |
1297 | int ret; | |
1298 | struct consumer_output output = { 0 }; | |
1299 | xmlNodePtr consumer_output_node; | |
1300 | ||
1301 | assert(name); | |
dcf266c0 JG |
1302 | |
1303 | if (output_node) { | |
1304 | consumer_output_node = xmlFirstElementChild(output_node); | |
1305 | if (!consumer_output_node) { | |
1306 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1307 | goto end; | |
1308 | } | |
1309 | ||
1310 | if (strcmp((const char *) consumer_output_node->name, | |
1311 | config_element_consumer_output)) { | |
1312 | WARN("Invalid output type, expected %s node", | |
1313 | config_element_consumer_output); | |
1314 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1315 | goto end; | |
1316 | } | |
1317 | ||
1318 | ret = process_consumer_output(consumer_output_node, &output); | |
1319 | if (ret) { | |
1320 | goto end; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | if (live_timer_interval != UINT64_MAX && | |
1325 | !output.control_uri && !output.data_uri) { | |
1326 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1327 | goto end; | |
1328 | } | |
1329 | ||
1330 | if (output.control_uri || output.data_uri) { | |
1331 | int i; | |
1332 | struct lttng_domain *domain; | |
1333 | struct lttng_domain *domains[] = | |
c8c5f7ce | 1334 | { kernel_domain, ust_domain, jul_domain, log4j_domain }; |
dcf266c0 JG |
1335 | |
1336 | /* network destination */ | |
1337 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1338 | /* |
1339 | * URLs are provided for sure since the test above make sure that | |
1340 | * with a live timer the data and control URIs are provided. So, | |
1341 | * NULL is passed here and will be set right after. | |
1342 | */ | |
1343 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1344 | } else { |
1345 | ret = lttng_create_session(name, NULL); | |
1346 | } | |
1347 | if (ret) { | |
1348 | goto end; | |
1349 | } | |
1350 | ||
301423df | 1351 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1352 | domain = domains[i]; |
1353 | if (!domain) { | |
1354 | continue; | |
1355 | } | |
1356 | ||
1357 | ret = create_session_net_output(name, domain, output.control_uri, | |
1358 | output.data_uri); | |
1359 | if (ret) { | |
1360 | goto end; | |
1361 | } | |
1362 | } | |
1363 | } else { | |
1364 | /* either local output or no output */ | |
1365 | ret = lttng_create_session(name, output.path); | |
1366 | if (ret) { | |
1367 | goto end; | |
1368 | } | |
1369 | } | |
1370 | end: | |
1371 | free(output.path); | |
1372 | free(output.control_uri); | |
1373 | free(output.data_uri); | |
1374 | return ret; | |
1375 | } | |
1376 | static | |
1377 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1378 | struct lttng_event_probe_attr *attr) | |
1379 | { | |
1380 | int ret; | |
1381 | ||
1382 | assert(probe_attribute_node); | |
1383 | assert(attr); | |
1384 | ||
1385 | if (!strcmp((const char *) probe_attribute_node->name, | |
1386 | config_element_address)) { | |
1387 | xmlChar *content; | |
1388 | uint64_t addr = 0; | |
1389 | ||
1390 | /* addr */ | |
1391 | content = xmlNodeGetContent(probe_attribute_node); | |
1392 | if (!content) { | |
1393 | ret = -LTTNG_ERR_NOMEM; | |
1394 | goto end; | |
1395 | } | |
1396 | ||
1397 | ret = parse_uint(content, &addr); | |
1398 | free(content); | |
1399 | if (ret) { | |
1400 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1401 | goto end; | |
1402 | } | |
1403 | ||
1404 | attr->addr = addr; | |
1405 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1406 | config_element_offset)) { | |
1407 | xmlChar *content; | |
1408 | uint64_t offset = 0; | |
1409 | ||
1410 | /* offset */ | |
1411 | content = xmlNodeGetContent(probe_attribute_node); | |
1412 | if (!content) { | |
1413 | ret = -LTTNG_ERR_NOMEM; | |
1414 | goto end; | |
1415 | } | |
1416 | ||
1417 | ret = parse_uint(content, &offset); | |
1418 | free(content); | |
1419 | if (ret) { | |
1420 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1421 | goto end; | |
1422 | } | |
1423 | ||
1424 | attr->offset = offset; | |
1425 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1426 | config_element_symbol_name)) { | |
1427 | xmlChar *content; | |
1428 | size_t name_len; | |
1429 | ||
1430 | /* symbol_name */ | |
1431 | content = xmlNodeGetContent(probe_attribute_node); | |
1432 | if (!content) { | |
1433 | ret = -LTTNG_ERR_NOMEM; | |
1434 | goto end; | |
1435 | } | |
1436 | ||
1437 | name_len = strlen((char *) content); | |
1438 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1439 | WARN("symbol_name too long."); | |
1440 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1441 | free(content); | |
1442 | goto end; | |
1443 | } | |
1444 | ||
1445 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1446 | free(content); | |
1447 | } | |
1448 | ret = 0; | |
1449 | end: | |
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | static | |
1454 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1455 | const char *channel_name) | |
1456 | { | |
1457 | int ret, i; | |
1458 | xmlNodePtr node; | |
1459 | struct lttng_event event; | |
1460 | char **exclusions = NULL; | |
1461 | unsigned long exclusion_count = 0; | |
1462 | char *filter_expression = NULL; | |
1463 | ||
1464 | assert(event_node); | |
1465 | assert(handle); | |
1466 | assert(channel_name); | |
1467 | ||
1468 | memset(&event, 0, sizeof(event)); | |
1469 | ||
f40eba3d JG |
1470 | /* Initialize default log level which varies by domain */ |
1471 | switch (handle->domain.type) | |
1472 | { | |
1473 | case LTTNG_DOMAIN_JUL: | |
1474 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1475 | break; | |
1476 | case LTTNG_DOMAIN_LOG4J: | |
1477 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1478 | break; | |
1479 | case LTTNG_DOMAIN_PYTHON: | |
1480 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1481 | break; | |
1482 | case LTTNG_DOMAIN_UST: | |
1483 | case LTTNG_DOMAIN_KERNEL: | |
1484 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1485 | break; | |
1486 | default: | |
1487 | assert(0); | |
1488 | } | |
1489 | ||
dcf266c0 JG |
1490 | for (node = xmlFirstElementChild(event_node); node; |
1491 | node = xmlNextElementSibling(node)) { | |
1492 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1493 | xmlChar *content; | |
1494 | size_t name_len; | |
1495 | ||
1496 | /* name */ | |
1497 | content = xmlNodeGetContent(node); | |
1498 | if (!content) { | |
1499 | ret = -LTTNG_ERR_NOMEM; | |
1500 | goto end; | |
1501 | } | |
1502 | ||
1503 | name_len = strlen((char *) content); | |
1504 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1505 | WARN("Channel name too long."); | |
1506 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1507 | free(content); | |
1508 | goto end; | |
1509 | } | |
1510 | ||
1511 | strncpy(event.name, (const char *) content, name_len); | |
1512 | free(content); | |
1513 | } else if (!strcmp((const char *) node->name, | |
1514 | config_element_enabled)) { | |
1515 | xmlChar *content = xmlNodeGetContent(node); | |
1516 | ||
1517 | /* enabled */ | |
1518 | if (!content) { | |
1519 | ret = -LTTNG_ERR_NOMEM; | |
1520 | goto end; | |
1521 | } | |
1522 | ||
1523 | ret = parse_bool(content, &event.enabled); | |
1524 | free(content); | |
1525 | if (ret) { | |
1526 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1527 | goto end; | |
1528 | } | |
1529 | } else if (!strcmp((const char *) node->name, | |
1530 | config_element_type)) { | |
1531 | xmlChar *content = xmlNodeGetContent(node); | |
1532 | ||
1533 | /* type */ | |
1534 | if (!content) { | |
1535 | ret = -LTTNG_ERR_NOMEM; | |
1536 | goto end; | |
1537 | } | |
1538 | ||
1539 | ret = get_event_type(content); | |
1540 | free(content); | |
1541 | if (ret < 0) { | |
1542 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1543 | goto end; | |
1544 | } | |
1545 | ||
1546 | event.type = ret; | |
1547 | } else if (!strcmp((const char *) node->name, | |
1548 | config_element_loglevel_type)) { | |
1549 | xmlChar *content = xmlNodeGetContent(node); | |
1550 | ||
1551 | /* loglevel_type */ | |
1552 | if (!content) { | |
1553 | ret = -LTTNG_ERR_NOMEM; | |
1554 | goto end; | |
1555 | } | |
1556 | ||
1557 | ret = get_loglevel_type(content); | |
1558 | free(content); | |
1559 | if (ret < 0) { | |
1560 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1561 | goto end; | |
1562 | } | |
1563 | ||
1564 | event.loglevel_type = ret; | |
1565 | } else if (!strcmp((const char *) node->name, | |
1566 | config_element_loglevel)) { | |
1567 | xmlChar *content; | |
1568 | int64_t loglevel = 0; | |
1569 | ||
1570 | /* loglevel */ | |
1571 | content = xmlNodeGetContent(node); | |
1572 | if (!content) { | |
1573 | ret = -LTTNG_ERR_NOMEM; | |
1574 | goto end; | |
1575 | } | |
1576 | ||
1577 | ret = parse_int(content, &loglevel); | |
1578 | free(content); | |
1579 | if (ret) { | |
1580 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1581 | goto end; | |
1582 | } | |
1583 | ||
1584 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1585 | WARN("loglevel out of range."); | |
1586 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1587 | goto end; | |
1588 | } | |
1589 | ||
1590 | event.loglevel = loglevel; | |
1591 | } else if (!strcmp((const char *) node->name, | |
1592 | config_element_filter)) { | |
1593 | xmlChar *content = | |
1594 | xmlNodeGetContent(node); | |
1595 | ||
1596 | /* filter */ | |
1597 | if (!content) { | |
1598 | ret = -LTTNG_ERR_NOMEM; | |
1599 | goto end; | |
1600 | } | |
1601 | ||
1602 | filter_expression = strdup((char *) content); | |
1603 | free(content); | |
1604 | if (!filter_expression) { | |
1605 | ret = -LTTNG_ERR_NOMEM; | |
1606 | goto end; | |
1607 | } | |
1608 | } else if (!strcmp((const char *) node->name, | |
1609 | config_element_exclusions)) { | |
1610 | xmlNodePtr exclusion_node; | |
1611 | int exclusion_index = 0; | |
1612 | ||
1613 | /* exclusions */ | |
1614 | if (exclusions) { | |
1615 | /* | |
1616 | * Exclusions has already been initialized, | |
1617 | * invalid file. | |
1618 | */ | |
1619 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1620 | goto end; | |
1621 | } | |
1622 | ||
1623 | exclusion_count = xmlChildElementCount(node); | |
1624 | if (!exclusion_count) { | |
1625 | continue; | |
1626 | } | |
1627 | ||
1628 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1629 | if (!exclusions) { | |
1630 | exclusion_count = 0; | |
1631 | ret = -LTTNG_ERR_NOMEM; | |
1632 | goto end; | |
1633 | } | |
1634 | ||
1635 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1636 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1637 | xmlChar *content = | |
1638 | xmlNodeGetContent(exclusion_node); | |
1639 | ||
1640 | if (!content) { | |
1641 | ret = -LTTNG_ERR_NOMEM; | |
1642 | goto end; | |
1643 | } | |
1644 | ||
1645 | exclusions[exclusion_index] = strdup((const char *) content); | |
1646 | free(content); | |
1647 | if (!exclusions[exclusion_index]) { | |
1648 | ret = -LTTNG_ERR_NOMEM; | |
1649 | goto end; | |
1650 | } | |
1651 | exclusion_index++; | |
1652 | } | |
1653 | ||
1654 | event.exclusion = 1; | |
1655 | } else if (!strcmp((const char *) node->name, | |
1656 | config_element_attributes)) { | |
1657 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1658 | ||
1659 | /* attributes */ | |
1660 | if (!attribute_node) { | |
1661 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1662 | goto end; | |
1663 | } | |
1664 | ||
1665 | if (!strcmp((const char *) node->name, | |
1666 | config_element_probe_attributes)) { | |
1667 | xmlNodePtr probe_attribute_node; | |
1668 | ||
1669 | /* probe_attributes */ | |
1670 | for (probe_attribute_node = | |
1671 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1672 | probe_attribute_node = xmlNextElementSibling( | |
1673 | probe_attribute_node)) { | |
1674 | ||
1675 | ret = process_probe_attribute_node(probe_attribute_node, | |
1676 | &event.attr.probe); | |
1677 | if (ret) { | |
1678 | goto end; | |
1679 | } | |
1680 | } | |
1681 | } else { | |
1682 | size_t sym_len; | |
1683 | xmlChar *content; | |
1684 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1685 | ||
1686 | /* function_attributes */ | |
1687 | content = xmlNodeGetContent(symbol_node); | |
1688 | if (!content) { | |
1689 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1690 | goto end; | |
1691 | } | |
1692 | ||
1693 | sym_len = strlen((char *) content); | |
1694 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1695 | WARN("Function name too long."); | |
1696 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1697 | free(content); | |
1698 | goto end; | |
1699 | } | |
1700 | ||
1701 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1702 | sym_len); | |
1703 | free(content); | |
1704 | } | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1709 | filter_expression, exclusion_count, exclusions); | |
065321e9 JG |
1710 | if (ret) { |
1711 | goto end; | |
1712 | } | |
1713 | ||
1714 | if (!event.enabled) { | |
1715 | /* | |
1716 | * Note that we should use lttng_disable_event_ext() (2.6+) to | |
1717 | * eliminate the risk of clashing on events of the same | |
1718 | * name (with different event types and loglevels). | |
1719 | * | |
1720 | * Unfortunately, lttng_disable_event_ext() only performs a | |
1721 | * match on the name and event type and errors out if any other | |
1722 | * event attribute is not set to its default value. | |
1723 | * | |
1724 | * This will disable all events that match this name. | |
1725 | */ | |
1726 | ret = lttng_disable_event(handle, event.name, channel_name); | |
1727 | } | |
dcf266c0 JG |
1728 | end: |
1729 | for (i = 0; i < exclusion_count; i++) { | |
1730 | free(exclusions[i]); | |
1731 | } | |
1732 | ||
1733 | free(exclusions); | |
1734 | free(filter_expression); | |
1735 | return ret; | |
1736 | } | |
1737 | ||
1738 | static | |
1739 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1740 | const char *channel_name) | |
1741 | { | |
1742 | int ret = 0; | |
1743 | xmlNodePtr node; | |
1744 | ||
1745 | assert(events_node); | |
1746 | assert(handle); | |
1747 | assert(channel_name); | |
1748 | ||
1749 | for (node = xmlFirstElementChild(events_node); node; | |
1750 | node = xmlNextElementSibling(node)) { | |
1751 | ret = process_event_node(node, handle, channel_name); | |
1752 | if (ret) { | |
1753 | goto end; | |
1754 | } | |
1755 | } | |
1756 | end: | |
1757 | return ret; | |
1758 | } | |
1759 | ||
1760 | static | |
1761 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1762 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1763 | xmlNodePtr *events_node) | |
1764 | { | |
1765 | int ret; | |
1766 | ||
1767 | assert(attr_node); | |
1768 | assert(channel); | |
1769 | assert(contexts_node); | |
1770 | assert(events_node); | |
1771 | ||
1772 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1773 | xmlChar *content; | |
1774 | size_t name_len; | |
1775 | ||
1776 | /* name */ | |
1777 | content = xmlNodeGetContent(attr_node); | |
1778 | if (!content) { | |
1779 | ret = -LTTNG_ERR_NOMEM; | |
1780 | goto end; | |
1781 | } | |
1782 | ||
1783 | name_len = strlen((char *) content); | |
1784 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1785 | WARN("Channel name too long."); | |
1786 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1787 | free(content); | |
1788 | goto end; | |
1789 | } | |
1790 | ||
1791 | strncpy(channel->name, (const char *) content, name_len); | |
1792 | free(content); | |
1793 | } else if (!strcmp((const char *) attr_node->name, | |
1794 | config_element_enabled)) { | |
1795 | xmlChar *content; | |
1796 | int enabled; | |
1797 | ||
1798 | /* enabled */ | |
1799 | content = xmlNodeGetContent(attr_node); | |
1800 | if (!content) { | |
1801 | ret = -LTTNG_ERR_NOMEM; | |
1802 | goto end; | |
1803 | } | |
1804 | ||
1805 | ret = parse_bool(content, &enabled); | |
1806 | free(content); | |
1807 | if (ret) { | |
1808 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1809 | goto end; | |
1810 | } | |
1811 | ||
1812 | channel->enabled = enabled; | |
1813 | } else if (!strcmp((const char *) attr_node->name, | |
1814 | config_element_overwrite_mode)) { | |
1815 | xmlChar *content; | |
1816 | ||
1817 | /* overwrite_mode */ | |
1818 | content = xmlNodeGetContent(attr_node); | |
1819 | if (!content) { | |
1820 | ret = -LTTNG_ERR_NOMEM; | |
1821 | goto end; | |
1822 | } | |
1823 | ||
1824 | ret = get_overwrite_mode(content); | |
1825 | free(content); | |
1826 | if (ret < 0) { | |
1827 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1828 | goto end; | |
1829 | } | |
1830 | ||
1831 | channel->attr.overwrite = ret; | |
1832 | } else if (!strcmp((const char *) attr_node->name, | |
1833 | config_element_subbuf_size)) { | |
1834 | xmlChar *content; | |
1835 | ||
1836 | /* subbuffer_size */ | |
1837 | content = xmlNodeGetContent(attr_node); | |
1838 | if (!content) { | |
1839 | ret = -LTTNG_ERR_NOMEM; | |
1840 | goto end; | |
1841 | } | |
1842 | ||
1843 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1844 | free(content); | |
1845 | if (ret) { | |
1846 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1847 | goto end; | |
1848 | } | |
1849 | } else if (!strcmp((const char *) attr_node->name, | |
1850 | config_element_num_subbuf)) { | |
1851 | xmlChar *content; | |
1852 | ||
1853 | /* subbuffer_count */ | |
1854 | content = xmlNodeGetContent(attr_node); | |
1855 | if (!content) { | |
1856 | ret = -LTTNG_ERR_NOMEM; | |
1857 | goto end; | |
1858 | } | |
1859 | ||
1860 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1861 | free(content); | |
1862 | if (ret) { | |
1863 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1864 | goto end; | |
1865 | } | |
1866 | } else if (!strcmp((const char *) attr_node->name, | |
1867 | config_element_switch_timer_interval)) { | |
1868 | xmlChar *content; | |
1869 | uint64_t switch_timer_interval = 0; | |
1870 | ||
1871 | /* switch_timer_interval */ | |
1872 | content = xmlNodeGetContent(attr_node); | |
1873 | if (!content) { | |
1874 | ret = -LTTNG_ERR_NOMEM; | |
1875 | goto end; | |
1876 | } | |
1877 | ||
1878 | ret = parse_uint(content, &switch_timer_interval); | |
1879 | free(content); | |
1880 | if (ret) { | |
1881 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1882 | goto end; | |
1883 | } | |
1884 | ||
1885 | if (switch_timer_interval > UINT_MAX) { | |
1886 | WARN("switch_timer_interval out of range."); | |
1887 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1888 | goto end; | |
1889 | } | |
1890 | ||
1891 | channel->attr.switch_timer_interval = | |
1892 | switch_timer_interval; | |
1893 | } else if (!strcmp((const char *) attr_node->name, | |
1894 | config_element_read_timer_interval)) { | |
1895 | xmlChar *content; | |
1896 | uint64_t read_timer_interval = 0; | |
1897 | ||
1898 | /* read_timer_interval */ | |
1899 | content = xmlNodeGetContent(attr_node); | |
1900 | if (!content) { | |
1901 | ret = -LTTNG_ERR_NOMEM; | |
1902 | goto end; | |
1903 | } | |
1904 | ||
1905 | ret = parse_uint(content, &read_timer_interval); | |
1906 | free(content); | |
1907 | if (ret) { | |
1908 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1909 | goto end; | |
1910 | } | |
1911 | ||
1912 | if (read_timer_interval > UINT_MAX) { | |
1913 | WARN("read_timer_interval out of range."); | |
1914 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1915 | goto end; | |
1916 | } | |
1917 | ||
1918 | channel->attr.read_timer_interval = | |
1919 | read_timer_interval; | |
1920 | } else if (!strcmp((const char *) attr_node->name, | |
1921 | config_element_output_type)) { | |
1922 | xmlChar *content; | |
1923 | ||
1924 | /* output_type */ | |
1925 | content = xmlNodeGetContent(attr_node); | |
1926 | if (!content) { | |
1927 | ret = -LTTNG_ERR_NOMEM; | |
1928 | goto end; | |
1929 | } | |
1930 | ||
1931 | ret = get_output_type(content); | |
1932 | free(content); | |
1933 | if (ret < 0) { | |
1934 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1935 | goto end; | |
1936 | } | |
1937 | ||
1938 | channel->attr.output = ret; | |
1939 | } else if (!strcmp((const char *) attr_node->name, | |
1940 | config_element_tracefile_size)) { | |
1941 | xmlChar *content; | |
1942 | ||
1943 | /* tracefile_size */ | |
1944 | content = xmlNodeGetContent(attr_node); | |
1945 | if (!content) { | |
1946 | ret = -LTTNG_ERR_NOMEM; | |
1947 | goto end; | |
1948 | } | |
1949 | ||
1950 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1951 | free(content); | |
1952 | if (ret) { | |
1953 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1954 | goto end; | |
1955 | } | |
1956 | } else if (!strcmp((const char *) attr_node->name, | |
1957 | config_element_tracefile_count)) { | |
1958 | xmlChar *content; | |
1959 | ||
1960 | /* tracefile_count */ | |
1961 | content = xmlNodeGetContent(attr_node); | |
1962 | if (!content) { | |
1963 | ret = -LTTNG_ERR_NOMEM; | |
1964 | goto end; | |
1965 | } | |
1966 | ||
1967 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1968 | free(content); | |
1969 | if (ret) { | |
1970 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1971 | goto end; | |
1972 | } | |
1973 | } else if (!strcmp((const char *) attr_node->name, | |
1974 | config_element_live_timer_interval)) { | |
1975 | xmlChar *content; | |
1976 | uint64_t live_timer_interval = 0; | |
1977 | ||
1978 | /* live_timer_interval */ | |
1979 | content = xmlNodeGetContent(attr_node); | |
1980 | if (!content) { | |
1981 | ret = -LTTNG_ERR_NOMEM; | |
1982 | goto end; | |
1983 | } | |
1984 | ||
1985 | ret = parse_uint(content, &live_timer_interval); | |
1986 | free(content); | |
1987 | if (ret) { | |
1988 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1989 | goto end; | |
1990 | } | |
1991 | ||
1992 | if (live_timer_interval > UINT_MAX) { | |
1993 | WARN("live_timer_interval out of range."); | |
1994 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1995 | goto end; | |
1996 | } | |
1997 | ||
1998 | channel->attr.live_timer_interval = | |
1999 | live_timer_interval; | |
2000 | } else if (!strcmp((const char *) attr_node->name, | |
2001 | config_element_events)) { | |
2002 | /* events */ | |
2003 | *events_node = attr_node; | |
2004 | } else { | |
2005 | /* contexts */ | |
2006 | *contexts_node = attr_node; | |
2007 | } | |
2008 | ret = 0; | |
2009 | end: | |
2010 | return ret; | |
2011 | } | |
2012 | ||
2013 | static | |
2014 | int process_context_node(xmlNodePtr context_node, | |
2015 | struct lttng_handle *handle, const char *channel_name) | |
2016 | { | |
2017 | int ret; | |
2018 | struct lttng_event_context context; | |
2019 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2020 | ||
2021 | assert(handle); | |
2022 | assert(channel_name); | |
2023 | ||
2024 | if (!context_child_node) { | |
2025 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2026 | goto end; | |
2027 | } | |
2028 | ||
2029 | memset(&context, 0, sizeof(context)); | |
2030 | ||
2031 | if (!strcmp((const char *) context_child_node->name, | |
2032 | config_element_type)) { | |
2033 | /* type */ | |
2034 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2035 | |
dcf266c0 JG |
2036 | if (!content) { |
2037 | ret = -LTTNG_ERR_NOMEM; | |
2038 | goto end; | |
2039 | } | |
2040 | ||
2041 | ret = get_context_type(content); | |
2042 | free(content); | |
2043 | if (ret < 0) { | |
2044 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2045 | goto end; | |
2046 | } | |
2047 | ||
2048 | context.ctx = ret; | |
045fc617 JG |
2049 | } else if (!strcmp((const char *) context_child_node->name, |
2050 | config_element_context_perf)) { | |
2051 | /* perf */ | |
dcf266c0 JG |
2052 | xmlNodePtr perf_attr_node; |
2053 | ||
14ce5bd8 JG |
2054 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2055 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2056 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2057 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2058 | perf_attr_node; perf_attr_node = | |
2059 | xmlNextElementSibling(perf_attr_node)) { | |
2060 | if (!strcmp((const char *) perf_attr_node->name, | |
2061 | config_element_type)) { | |
2062 | xmlChar *content; | |
2063 | uint64_t type = 0; | |
2064 | ||
2065 | /* type */ | |
2066 | content = xmlNodeGetContent(perf_attr_node); | |
2067 | if (!content) { | |
2068 | ret = -LTTNG_ERR_NOMEM; | |
2069 | goto end; | |
2070 | } | |
2071 | ||
2072 | ret = parse_uint(content, &type); | |
2073 | free(content); | |
2074 | if (ret) { | |
2075 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2076 | goto end; | |
2077 | } | |
2078 | ||
2079 | if (type > UINT32_MAX) { | |
2080 | WARN("perf context type out of range."); | |
2081 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2082 | goto end; | |
2083 | } | |
2084 | ||
2085 | context.u.perf_counter.type = type; | |
2086 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2087 | config_element_config)) { | |
2088 | xmlChar *content; | |
2089 | uint64_t config = 0; | |
2090 | ||
2091 | /* config */ | |
2092 | content = xmlNodeGetContent(perf_attr_node); | |
2093 | if (!content) { | |
2094 | ret = -LTTNG_ERR_NOMEM; | |
2095 | goto end; | |
2096 | } | |
2097 | ||
2098 | ret = parse_uint(content, &config); | |
2099 | free(content); | |
2100 | if (ret) { | |
2101 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2102 | goto end; | |
2103 | } | |
2104 | ||
2105 | context.u.perf_counter.config = config; | |
2106 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2107 | config_element_name)) { | |
2108 | xmlChar *content; | |
2109 | size_t name_len; | |
2110 | ||
2111 | /* name */ | |
2112 | content = xmlNodeGetContent(perf_attr_node); | |
2113 | if (!content) { | |
2114 | ret = -LTTNG_ERR_NOMEM; | |
2115 | goto end; | |
2116 | } | |
2117 | ||
2118 | name_len = strlen((char *) content); | |
2119 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2120 | WARN("perf context name too long."); | |
2121 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2122 | free(content); | |
2123 | goto end; | |
2124 | } | |
2125 | ||
2126 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2127 | name_len); | |
2128 | free(content); | |
2129 | } | |
2130 | } | |
045fc617 JG |
2131 | } else if (!strcmp((const char *) context_child_node->name, |
2132 | config_element_context_app)) { | |
2133 | /* application context */ | |
2134 | xmlNodePtr app_ctx_node; | |
2135 | ||
2136 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2137 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2138 | app_ctx_node; app_ctx_node = | |
2139 | xmlNextElementSibling(app_ctx_node)) { | |
2140 | xmlChar *content; | |
2141 | char **target = strcmp( | |
2142 | (const char *) app_ctx_node->name, | |
2143 | config_element_context_app_provider_name) == 0 ? | |
2144 | &context.u.app_ctx.provider_name : | |
2145 | &context.u.app_ctx.ctx_name; | |
2146 | ||
2147 | content = xmlNodeGetContent(app_ctx_node); | |
2148 | if (!content) { | |
2149 | ret = -LTTNG_ERR_NOMEM; | |
2150 | goto end; | |
2151 | } | |
2152 | ||
2153 | *target = (char *) content; | |
2154 | } | |
2155 | } else { | |
2156 | /* Unrecognized context type */ | |
2157 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2158 | goto end; | |
dcf266c0 JG |
2159 | } |
2160 | ||
2161 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2162 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2163 | free(context.u.app_ctx.provider_name); | |
2164 | free(context.u.app_ctx.ctx_name); | |
2165 | } | |
dcf266c0 JG |
2166 | end: |
2167 | return ret; | |
2168 | } | |
2169 | ||
2170 | static | |
2171 | int process_contexts_node(xmlNodePtr contexts_node, | |
2172 | struct lttng_handle *handle, const char *channel_name) | |
2173 | { | |
2174 | int ret = 0; | |
2175 | xmlNodePtr context_node; | |
2176 | ||
2177 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2178 | context_node = xmlNextElementSibling(context_node)) { | |
2179 | ret = process_context_node(context_node, handle, channel_name); | |
2180 | if (ret) { | |
2181 | goto end; | |
2182 | } | |
2183 | } | |
2184 | end: | |
2185 | return ret; | |
2186 | } | |
2187 | ||
847a5916 JR |
2188 | static |
2189 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2190 | struct lttng_handle *handle) | |
2191 | { | |
dd49e13f | 2192 | int ret = 0, child; |
847a5916 JR |
2193 | xmlNodePtr targets_node = NULL; |
2194 | xmlNodePtr node; | |
2195 | ||
2196 | assert(handle); | |
2197 | assert(pid_tracker_node); | |
2198 | /* get the targets node */ | |
2199 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2200 | node = xmlNextElementSibling(node)) { | |
2201 | if (!strcmp((const char *) node->name, | |
2202 | config_element_targets)) { | |
2203 | targets_node = node; | |
2204 | break; | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | if (!targets_node) { | |
2209 | ret = LTTNG_ERR_INVALID; | |
2210 | goto end; | |
2211 | } | |
2212 | ||
2213 | /* Go through all pid_target node */ | |
2214 | child = xmlChildElementCount(targets_node); | |
2215 | if (child == 0) { | |
2216 | /* The session is explicitly set to target nothing. */ | |
2217 | ret = lttng_untrack_pid(handle, -1); | |
2218 | if (ret) { | |
2219 | goto end; | |
2220 | } | |
2221 | } | |
2222 | for (node = xmlFirstElementChild(targets_node); node; | |
2223 | node = xmlNextElementSibling(node)) { | |
2224 | xmlNodePtr pid_target_node = node; | |
2225 | ||
2226 | /* get pid node and track it */ | |
2227 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2228 | node = xmlNextElementSibling(node)) { | |
2229 | if (!strcmp((const char *) node->name, | |
2230 | config_element_pid)) { | |
2231 | int64_t pid; | |
2232 | xmlChar *content = NULL; | |
2233 | ||
2234 | content = xmlNodeGetContent(node); | |
2235 | if (!content) { | |
2236 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2237 | goto end; | |
2238 | } | |
2239 | ||
2240 | ret = parse_int(content, &pid); | |
2241 | free(content); | |
2242 | if (ret) { | |
2243 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2244 | goto end; | |
2245 | } | |
2246 | ||
2247 | ret = lttng_track_pid(handle, (int) pid); | |
2248 | if (ret) { | |
2249 | goto end; | |
2250 | } | |
2251 | } | |
2252 | } | |
2253 | node = pid_target_node; | |
2254 | } | |
2255 | ||
2256 | end: | |
2257 | return ret; | |
2258 | } | |
2259 | ||
2260 | ||
dcf266c0 JG |
2261 | static |
2262 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2263 | { | |
2264 | int ret; | |
2265 | struct lttng_domain domain = { 0 }; | |
2266 | struct lttng_handle *handle = NULL; | |
2267 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2268 | xmlNodePtr trackers_node = NULL; |
2269 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2270 | xmlNodePtr node; |
2271 | ||
2272 | assert(session_name); | |
2273 | ||
2274 | ret = init_domain(domain_node, &domain); | |
2275 | if (ret) { | |
2276 | goto end; | |
2277 | } | |
2278 | ||
2279 | handle = lttng_create_handle(session_name, &domain); | |
2280 | if (!handle) { | |
2281 | ret = -LTTNG_ERR_NOMEM; | |
2282 | goto end; | |
2283 | } | |
2284 | ||
2285 | /* get the channels node */ | |
2286 | for (node = xmlFirstElementChild(domain_node); node; | |
2287 | node = xmlNextElementSibling(node)) { | |
2288 | if (!strcmp((const char *) node->name, | |
2289 | config_element_channels)) { | |
2290 | channels_node = node; | |
2291 | break; | |
2292 | } | |
2293 | } | |
2294 | ||
2295 | if (!channels_node) { | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | /* create all channels */ | |
2300 | for (node = xmlFirstElementChild(channels_node); node; | |
2301 | node = xmlNextElementSibling(node)) { | |
2302 | struct lttng_channel channel; | |
2303 | xmlNodePtr contexts_node = NULL; | |
2304 | xmlNodePtr events_node = NULL; | |
2305 | xmlNodePtr channel_attr_node; | |
2306 | ||
2307 | memset(&channel, 0, sizeof(channel)); | |
2308 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2309 | ||
2310 | for (channel_attr_node = xmlFirstElementChild(node); | |
2311 | channel_attr_node; channel_attr_node = | |
2312 | xmlNextElementSibling(channel_attr_node)) { | |
2313 | ret = process_channel_attr_node(channel_attr_node, | |
2314 | &channel, &contexts_node, &events_node); | |
2315 | if (ret) { | |
2316 | goto end; | |
2317 | } | |
2318 | } | |
2319 | ||
2320 | ret = lttng_enable_channel(handle, &channel); | |
2321 | if (ret < 0) { | |
2322 | goto end; | |
2323 | } | |
2324 | ||
2325 | ret = process_events_node(events_node, handle, channel.name); | |
2326 | if (ret) { | |
2327 | goto end; | |
2328 | } | |
2329 | ||
2330 | ret = process_contexts_node(contexts_node, handle, | |
2331 | channel.name); | |
2332 | if (ret) { | |
2333 | goto end; | |
2334 | } | |
2335 | } | |
847a5916 JR |
2336 | |
2337 | /* get the trackers node */ | |
2338 | for (node = xmlFirstElementChild(domain_node); node; | |
2339 | node = xmlNextElementSibling(node)) { | |
2340 | if (!strcmp((const char *) node->name, | |
2341 | config_element_trackers)) { | |
2342 | trackers_node = node; | |
2343 | break; | |
2344 | } | |
2345 | } | |
2346 | ||
2347 | if (!trackers_node) { | |
2348 | goto end; | |
2349 | } | |
2350 | ||
2351 | for (node = xmlFirstElementChild(trackers_node); node; | |
2352 | node = xmlNextElementSibling(node)) { | |
2353 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2354 | pid_tracker_node = node; | |
2355 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2356 | if (ret) { | |
2357 | goto end; | |
2358 | } | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | if (!pid_tracker_node) { | |
2363 | lttng_track_pid(handle, -1); | |
2364 | } | |
2365 | ||
dcf266c0 JG |
2366 | end: |
2367 | lttng_destroy_handle(handle); | |
2368 | return ret; | |
2369 | } | |
2370 | ||
2371 | static | |
2372 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2373 | int override) | |
2374 | { | |
2375 | int ret, started = -1, snapshot_mode = -1; | |
2376 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2377 | xmlChar *name = NULL; |
9e7c9f56 | 2378 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2379 | xmlNodePtr domains_node = NULL; |
2380 | xmlNodePtr output_node = NULL; | |
2381 | xmlNodePtr node; | |
2382 | struct lttng_domain *kernel_domain = NULL; | |
2383 | struct lttng_domain *ust_domain = NULL; | |
2384 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2385 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2386 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2387 | |
2388 | for (node = xmlFirstElementChild(session_node); node; | |
2389 | node = xmlNextElementSibling(node)) { | |
2390 | if (!name && !strcmp((const char *) node->name, | |
2391 | config_element_name)) { | |
2392 | /* name */ | |
2393 | xmlChar *node_content = xmlNodeGetContent(node); | |
2394 | if (!node_content) { | |
2395 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2396 | goto error; |
dcf266c0 JG |
2397 | } |
2398 | ||
d324faf7 | 2399 | name = node_content; |
dcf266c0 JG |
2400 | } else if (!domains_node && !strcmp((const char *) node->name, |
2401 | config_element_domains)) { | |
2402 | /* domains */ | |
2403 | domains_node = node; | |
2404 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2405 | config_element_started)) { | |
2406 | /* started */ | |
2407 | xmlChar *node_content = xmlNodeGetContent(node); | |
2408 | if (!node_content) { | |
2409 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2410 | goto error; |
dcf266c0 JG |
2411 | } |
2412 | ||
2413 | ret = parse_bool(node_content, &started); | |
2414 | free(node_content); | |
2415 | if (ret) { | |
2416 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2417 | goto error; |
dcf266c0 JG |
2418 | } |
2419 | } else if (!output_node && !strcmp((const char *) node->name, | |
2420 | config_element_output)) { | |
2421 | /* output */ | |
2422 | output_node = node; | |
9e7c9f56 JR |
2423 | } else if (!shm_path && !strcmp((const char *) node->name, |
2424 | config_element_shared_memory_path)) { | |
2425 | /* shared memory path */ | |
2426 | xmlChar *node_content = xmlNodeGetContent(node); | |
2427 | if (!node_content) { | |
2428 | ret = -LTTNG_ERR_NOMEM; | |
2429 | goto error; | |
2430 | } | |
2431 | ||
2432 | shm_path = node_content; | |
dcf266c0 JG |
2433 | } else { |
2434 | /* attributes, snapshot_mode or live_timer_interval */ | |
2435 | xmlNodePtr attributes_child = | |
2436 | xmlFirstElementChild(node); | |
2437 | ||
2438 | if (!strcmp((const char *) attributes_child->name, | |
2439 | config_element_snapshot_mode)) { | |
2440 | /* snapshot_mode */ | |
2441 | xmlChar *snapshot_mode_content = | |
2442 | xmlNodeGetContent(attributes_child); | |
2443 | if (!snapshot_mode_content) { | |
2444 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2445 | goto error; |
dcf266c0 JG |
2446 | } |
2447 | ||
2448 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2449 | free(snapshot_mode_content); | |
2450 | if (ret) { | |
2451 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2452 | goto error; |
dcf266c0 JG |
2453 | } |
2454 | } else { | |
2455 | /* live_timer_interval */ | |
2456 | xmlChar *timer_interval_content = | |
2457 | xmlNodeGetContent(attributes_child); | |
2458 | if (!timer_interval_content) { | |
2459 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2460 | goto error; |
dcf266c0 JG |
2461 | } |
2462 | ||
2463 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2464 | free(timer_interval_content); | |
2465 | if (ret) { | |
2466 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2467 | goto error; |
dcf266c0 JG |
2468 | } |
2469 | } | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | if (!name) { | |
2474 | /* Mandatory attribute, as defined in the session XSD */ | |
2475 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2476 | goto error; |
dcf266c0 JG |
2477 | } |
2478 | ||
d324faf7 | 2479 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2480 | /* This is not the session we are looking for */ |
c2da8cde DG |
2481 | ret = -LTTNG_ERR_NO_SESSION; |
2482 | goto error; | |
dcf266c0 JG |
2483 | } |
2484 | ||
2485 | /* Init domains to create the session handles */ | |
2486 | for (node = xmlFirstElementChild(domains_node); node; | |
2487 | node = xmlNextElementSibling(node)) { | |
2488 | struct lttng_domain *domain; | |
2489 | ||
2490 | domain = zmalloc(sizeof(*domain)); | |
2491 | if (!domain) { | |
2492 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2493 | goto error; |
dcf266c0 JG |
2494 | } |
2495 | ||
2496 | ret = init_domain(node, domain); | |
2497 | if (ret) { | |
2498 | goto domain_init_error; | |
2499 | } | |
2500 | ||
2501 | switch (domain->type) { | |
2502 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2503 | if (kernel_domain) { |
2504 | /* Same domain seen twice, invalid! */ | |
2505 | goto domain_init_error; | |
2506 | } | |
dcf266c0 JG |
2507 | kernel_domain = domain; |
2508 | break; | |
2509 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2510 | if (ust_domain) { |
2511 | /* Same domain seen twice, invalid! */ | |
2512 | goto domain_init_error; | |
2513 | } | |
dcf266c0 JG |
2514 | ust_domain = domain; |
2515 | break; | |
2516 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2517 | if (jul_domain) { |
2518 | /* Same domain seen twice, invalid! */ | |
2519 | goto domain_init_error; | |
2520 | } | |
dcf266c0 JG |
2521 | jul_domain = domain; |
2522 | break; | |
5cdb6027 DG |
2523 | case LTTNG_DOMAIN_LOG4J: |
2524 | if (log4j_domain) { | |
2525 | /* Same domain seen twice, invalid! */ | |
2526 | goto domain_init_error; | |
2527 | } | |
2528 | log4j_domain = domain; | |
2529 | break; | |
0e115563 DG |
2530 | case LTTNG_DOMAIN_PYTHON: |
2531 | if (python_domain) { | |
2532 | /* Same domain seen twice, invalid! */ | |
2533 | goto domain_init_error; | |
2534 | } | |
2535 | python_domain = domain; | |
2536 | break; | |
dcf266c0 JG |
2537 | default: |
2538 | WARN("Invalid domain type"); | |
2539 | goto domain_init_error; | |
2540 | } | |
2541 | continue; | |
2542 | domain_init_error: | |
2543 | free(domain); | |
2544 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2545 | goto error; |
dcf266c0 JG |
2546 | } |
2547 | ||
2548 | if (override) { | |
2549 | /* Destroy session if it exists */ | |
d324faf7 | 2550 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2551 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2552 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2553 | goto error; |
dcf266c0 JG |
2554 | } |
2555 | } | |
2556 | ||
2557 | /* Create session type depending on output type */ | |
2558 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2559 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2560 | } else if (live_timer_interval && |
2561 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2562 | ret = create_session((const char *) name, kernel_domain, |
2563 | ust_domain, jul_domain, log4j_domain, | |
2564 | output_node, live_timer_interval); | |
dcf266c0 JG |
2565 | } else { |
2566 | /* regular session */ | |
d324faf7 JG |
2567 | ret = create_session((const char *) name, kernel_domain, |
2568 | ust_domain, jul_domain, log4j_domain, | |
2569 | output_node, UINT64_MAX); | |
dcf266c0 | 2570 | } |
dcf266c0 | 2571 | if (ret) { |
c2da8cde | 2572 | goto error; |
dcf266c0 JG |
2573 | } |
2574 | ||
9e7c9f56 JR |
2575 | if (shm_path) { |
2576 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2577 | (const char *) shm_path); |
9e7c9f56 JR |
2578 | if (ret) { |
2579 | goto error; | |
2580 | } | |
2581 | } | |
2582 | ||
dcf266c0 JG |
2583 | for (node = xmlFirstElementChild(domains_node); node; |
2584 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2585 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2586 | if (ret) { |
2587 | goto end; | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | if (started) { | |
d324faf7 | 2592 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2593 | if (ret) { |
2594 | goto end; | |
2595 | } | |
2596 | } | |
c2da8cde | 2597 | |
dcf266c0 | 2598 | end: |
b2579dc1 | 2599 | if (ret < 0) { |
d324faf7 JG |
2600 | ERR("Failed to load session %s: %s", (const char *) name, |
2601 | lttng_strerror(ret)); | |
2602 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2603 | } |
2604 | ||
c2da8cde | 2605 | error: |
dcf266c0 JG |
2606 | free(kernel_domain); |
2607 | free(ust_domain); | |
2608 | free(jul_domain); | |
5cdb6027 | 2609 | free(log4j_domain); |
135a3893 | 2610 | free(python_domain); |
d324faf7 | 2611 | xmlFree(name); |
9e7c9f56 | 2612 | xmlFree(shm_path); |
dcf266c0 JG |
2613 | return ret; |
2614 | } | |
2615 | ||
cf53c06d DG |
2616 | /* |
2617 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2618 | * Return -1 if the path is EPERM. | |
2619 | */ | |
2620 | static int validate_file_read_creds(const char *path) | |
2621 | { | |
2622 | int ret; | |
2623 | ||
2624 | assert(path); | |
2625 | ||
2626 | /* Can we read the file. */ | |
2627 | ret = access(path, R_OK); | |
2628 | if (!ret) { | |
2629 | goto valid; | |
2630 | } | |
2631 | if (errno == EACCES) { | |
2632 | return -1; | |
2633 | } else { | |
2634 | /* Invalid. */ | |
2635 | return 0; | |
2636 | } | |
2637 | valid: | |
2638 | return 1; | |
2639 | } | |
2640 | ||
dcf266c0 JG |
2641 | static |
2642 | int load_session_from_file(const char *path, const char *session_name, | |
2643 | struct session_config_validation_ctx *validation_ctx, int override) | |
2644 | { | |
2645 | int ret, session_found = !session_name; | |
2646 | xmlDocPtr doc = NULL; | |
2647 | xmlNodePtr sessions_node; | |
2648 | xmlNodePtr session_node; | |
dcf266c0 JG |
2649 | |
2650 | assert(path); | |
2651 | assert(validation_ctx); | |
2652 | ||
cf53c06d DG |
2653 | ret = validate_file_read_creds(path); |
2654 | if (ret != 1) { | |
2655 | if (ret == -1) { | |
2656 | ret = -LTTNG_ERR_EPERM; | |
2657 | } else { | |
2658 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2659 | } | |
dcf266c0 JG |
2660 | goto end; |
2661 | } | |
2662 | ||
2663 | doc = xmlParseFile(path); | |
2664 | if (!doc) { | |
2665 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2666 | goto end; | |
2667 | } | |
2668 | ||
2669 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2670 | if (ret) { | |
2671 | ERR("Session configuration file validation failed"); | |
2672 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2673 | goto end; | |
2674 | } | |
2675 | ||
2676 | sessions_node = xmlDocGetRootElement(doc); | |
2677 | if (!sessions_node) { | |
2678 | goto end; | |
2679 | } | |
2680 | ||
2681 | for (session_node = xmlFirstElementChild(sessions_node); | |
2682 | session_node; session_node = | |
2683 | xmlNextElementSibling(session_node)) { | |
2684 | ret = process_session_node(session_node, | |
2685 | session_name, override); | |
2686 | if (session_name && ret == 0) { | |
2687 | /* Target session found and loaded */ | |
2688 | session_found = 1; | |
2689 | break; | |
2690 | } | |
2691 | } | |
2692 | end: | |
2693 | xmlFreeDoc(doc); | |
2694 | if (!ret) { | |
a96bc65d | 2695 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2696 | } |
2697 | return ret; | |
2698 | } | |
2699 | ||
60f70355 JG |
2700 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2701 | static | |
2702 | struct dirent *alloc_dirent(const char *path) | |
2703 | { | |
2704 | size_t len; | |
2705 | long name_max; | |
2706 | struct dirent *entry; | |
2707 | ||
2708 | name_max = pathconf(path, _PC_NAME_MAX); | |
2709 | if (name_max == -1) { | |
2710 | name_max = PATH_MAX; | |
2711 | } | |
2712 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2713 | entry = zmalloc(len); | |
2714 | return entry; | |
2715 | } | |
2716 | ||
dcf266c0 JG |
2717 | static |
2718 | int load_session_from_path(const char *path, const char *session_name, | |
2719 | struct session_config_validation_ctx *validation_ctx, int override) | |
2720 | { | |
2721 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2722 | DIR *directory = NULL; |
2723 | ||
2724 | assert(path); | |
2725 | assert(validation_ctx); | |
2726 | ||
4af16958 DG |
2727 | directory = opendir(path); |
2728 | if (!directory) { | |
11143783 DG |
2729 | switch (errno) { |
2730 | case ENOTDIR: | |
0f0a81b5 DG |
2731 | /* Try the file loading. */ |
2732 | break; | |
11143783 DG |
2733 | case ENOENT: |
2734 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2735 | goto end; | |
2736 | default: | |
0f0a81b5 DG |
2737 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2738 | goto end; | |
4af16958 | 2739 | } |
dcf266c0 | 2740 | } |
4af16958 | 2741 | if (directory) { |
dcf266c0 JG |
2742 | struct dirent *entry; |
2743 | struct dirent *result; | |
2744 | char *file_path = NULL; | |
2745 | size_t path_len = strlen(path); | |
2746 | ||
2747 | if (path_len >= PATH_MAX) { | |
2748 | ret = -LTTNG_ERR_INVALID; | |
2749 | goto end; | |
2750 | } | |
2751 | ||
60f70355 | 2752 | entry = alloc_dirent(path); |
dcf266c0 JG |
2753 | if (!entry) { |
2754 | ret = -LTTNG_ERR_NOMEM; | |
2755 | goto end; | |
2756 | } | |
2757 | ||
dcf266c0 JG |
2758 | file_path = zmalloc(PATH_MAX); |
2759 | if (!file_path) { | |
2760 | ret = -LTTNG_ERR_NOMEM; | |
2761 | free(entry); | |
2762 | goto end; | |
2763 | } | |
2764 | ||
2765 | strncpy(file_path, path, path_len); | |
2766 | if (file_path[path_len - 1] != '/') { | |
2767 | file_path[path_len++] = '/'; | |
2768 | } | |
2769 | ||
4af16958 | 2770 | ret = 0; |
dcf266c0 JG |
2771 | /* Search for *.lttng files */ |
2772 | while (!readdir_r(directory, entry, &result) && result) { | |
2773 | size_t file_name_len = strlen(result->d_name); | |
2774 | ||
2775 | if (file_name_len <= | |
2776 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2777 | continue; | |
2778 | } | |
2779 | ||
431f702e | 2780 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2781 | continue; |
2782 | } | |
2783 | ||
2784 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2785 | result->d_name + file_name_len - sizeof( | |
2786 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2787 | continue; | |
2788 | } | |
2789 | ||
2790 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2791 | file_path[path_len + file_name_len] = '\0'; | |
2792 | ||
2793 | ret = load_session_from_file(file_path, session_name, | |
2794 | validation_ctx, override); | |
2795 | if (session_name && !ret) { | |
2796 | session_found = 1; | |
2797 | break; | |
2798 | } | |
2799 | } | |
2800 | ||
2801 | free(entry); | |
2802 | free(file_path); | |
2803 | } else { | |
2804 | ret = load_session_from_file(path, session_name, | |
2805 | validation_ctx, override); | |
2806 | if (ret) { | |
2807 | goto end; | |
2808 | } else { | |
2809 | session_found = 1; | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | end: | |
2814 | if (directory) { | |
2815 | if (closedir(directory)) { | |
2816 | PERROR("closedir"); | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | if (!session_found) { | |
a96bc65d | 2821 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2822 | } |
2823 | ||
2824 | return ret; | |
2825 | } | |
2826 | ||
ab38c13f DG |
2827 | /* |
2828 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2829 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2830 | */ |
2831 | static int validate_path_creds(const char *path) | |
2832 | { | |
2833 | int ret, uid = getuid(); | |
2834 | struct stat buf; | |
2835 | ||
2836 | assert(path); | |
2837 | ||
cf53c06d | 2838 | if (uid == 0) { |
ab38c13f DG |
2839 | goto valid; |
2840 | } | |
2841 | ||
2842 | ret = stat(path, &buf); | |
2843 | if (ret < 0) { | |
2844 | if (errno != ENOENT) { | |
2845 | PERROR("stat"); | |
2846 | } | |
2847 | ret = -LTTNG_ERR_INVALID; | |
2848 | goto valid; | |
2849 | } | |
2850 | ||
2851 | if (buf.st_uid != uid) { | |
2852 | goto invalid; | |
2853 | } | |
2854 | ||
2855 | valid: | |
ab38c13f | 2856 | return 1; |
cf53c06d DG |
2857 | invalid: |
2858 | return 0; | |
ab38c13f DG |
2859 | } |
2860 | ||
dcf266c0 JG |
2861 | LTTNG_HIDDEN |
2862 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2863 | int override, unsigned int autoload) |
dcf266c0 JG |
2864 | { |
2865 | int ret; | |
cf53c06d | 2866 | const char *path_ptr = NULL; |
dcf266c0 JG |
2867 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2868 | ||
2869 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2870 | if (ret) { | |
2871 | goto end; | |
2872 | } | |
2873 | ||
2874 | if (!path) { | |
ab38c13f DG |
2875 | char *home_path; |
2876 | const char *sys_path; | |
2877 | ||
dcf266c0 | 2878 | /* Try home path */ |
ab38c13f | 2879 | home_path = utils_get_home_dir(); |
dcf266c0 | 2880 | if (home_path) { |
ab38c13f | 2881 | char path[PATH_MAX]; |
dcf266c0 | 2882 | |
d4fcf703 DG |
2883 | /* |
2884 | * Try user session configuration path. Ignore error here so we can | |
2885 | * continue loading the system wide sessions. | |
2886 | */ | |
ab38c13f DG |
2887 | if (autoload) { |
2888 | ret = snprintf(path, sizeof(path), | |
2889 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2890 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2891 | if (ret < 0) { |
2892 | PERROR("snprintf session autoload home config path"); | |
2893 | goto end; | |
2894 | } | |
2895 | ||
2896 | /* | |
2897 | * Credentials are only validated for the autoload in order to | |
2898 | * avoid any user session daemon to try to load kernel sessions | |
2899 | * automatically and failing all the times. | |
2900 | */ | |
2901 | ret = validate_path_creds(path); | |
2902 | if (ret) { | |
2903 | path_ptr = path; | |
2904 | } | |
ab38c13f DG |
2905 | } else { |
2906 | ret = snprintf(path, sizeof(path), | |
2907 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2908 | if (ret < 0) { |
2909 | PERROR("snprintf session home config path"); | |
2910 | goto end; | |
2911 | } | |
2912 | path_ptr = path; | |
ab38c13f | 2913 | } |
cf53c06d DG |
2914 | if (path_ptr) { |
2915 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2916 | &validation_ctx, override); |
2917 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2918 | goto end; | |
2919 | } | |
2920 | /* | |
2921 | * Continue even if the session was found since we have to try | |
2922 | * the system wide sessions. | |
2923 | */ | |
ab38c13f | 2924 | } |
d4fcf703 | 2925 | } |
ab38c13f | 2926 | |
cf53c06d DG |
2927 | /* Reset path pointer for the system wide dir. */ |
2928 | path_ptr = NULL; | |
2929 | ||
d4fcf703 DG |
2930 | /* Try system wide configuration directory. */ |
2931 | if (autoload) { | |
2932 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2933 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2934 | ret = validate_path_creds(sys_path); |
2935 | if (ret) { | |
2936 | path_ptr = sys_path; | |
2937 | } | |
d4fcf703 | 2938 | } else { |
cf53c06d DG |
2939 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2940 | path_ptr = sys_path; | |
d4fcf703 DG |
2941 | } |
2942 | ||
cf53c06d DG |
2943 | if (path_ptr) { |
2944 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2945 | &validation_ctx, override); |
dcf266c0 JG |
2946 | } |
2947 | } else { | |
2948 | ret = access(path, F_OK); | |
2949 | if (ret < 0) { | |
2950 | PERROR("access"); | |
2951 | switch (errno) { | |
2952 | case ENOENT: | |
2953 | ret = -LTTNG_ERR_INVALID; | |
2954 | WARN("Session configuration path does not exist."); | |
2955 | break; | |
2956 | case EACCES: | |
2957 | ret = -LTTNG_ERR_EPERM; | |
2958 | break; | |
2959 | default: | |
2960 | ret = -LTTNG_ERR_UNK; | |
2961 | break; | |
2962 | } | |
2963 | goto end; | |
2964 | } | |
2965 | ||
2966 | ret = load_session_from_path(path, session_name, | |
2967 | &validation_ctx, override); | |
2968 | } | |
2969 | end: | |
2970 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2971 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2972 | /* | |
2973 | * Don't report an error if no sessions are found when called | |
2974 | * without a session_name or a search path. | |
2975 | */ | |
2976 | ret = 0; | |
2977 | } | |
dcf266c0 JG |
2978 | return ret; |
2979 | } |