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 | ||
18 | #define _GNU_SOURCE | |
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> | |
fb198a11 JG |
34 | #include <lttng/lttng-error.h> |
35 | #include <libxml/parser.h> | |
36 | #include <libxml/valid.h> | |
37 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
38 | #include <libxml/tree.h> |
39 | #include <lttng/lttng.h> | |
40 | #include <lttng/snapshot.h> | |
1501a7f3 JG |
41 | |
42 | #include "config.h" | |
36f2332b | 43 | #include "config-internal.h" |
1501a7f3 JG |
44 | |
45 | struct handler_filter_args { | |
46 | const char* section; | |
47 | config_entry_handler_cb handler; | |
48 | void *user_data; | |
49 | }; | |
50 | ||
dcf266c0 JG |
51 | struct session_config_validation_ctx { |
52 | xmlSchemaParserCtxtPtr parser_ctx; | |
53 | xmlSchemaPtr schema; | |
54 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
55 | }; | |
56 | ||
1501a7f3 JG |
57 | const char * const config_str_yes = "yes"; |
58 | const char * const config_str_true = "true"; | |
59 | const char * const config_str_on = "on"; | |
60 | const char * const config_str_no = "no"; | |
61 | const char * const config_str_false = "false"; | |
62 | const char * const config_str_off = "off"; | |
36f2332b | 63 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 64 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
65 | const char * const config_xml_indent_string = "\t"; |
66 | const char * const config_xml_true = "true"; | |
67 | const char * const config_xml_false = "false"; | |
1501a7f3 | 68 | |
fb198a11 JG |
69 | const char * const config_element_channel = "channel"; |
70 | const char * const config_element_channels = "channels"; | |
71 | const char * const config_element_domain = "domain"; | |
72 | const char * const config_element_domains = "domains"; | |
73 | const char * const config_element_event = "event"; | |
74 | const char * const config_element_events = "events"; | |
75 | const char * const config_element_context = "context"; | |
76 | const char * const config_element_contexts = "contexts"; | |
77 | const char * const config_element_attributes = "attributes"; | |
78 | const char * const config_element_exclusion = "exclusion"; | |
79 | const char * const config_element_exclusions = "exclusions"; | |
80 | const char * const config_element_function_attributes = "function_attributes"; | |
81 | const char * const config_element_probe_attributes = "probe_attributes"; | |
82 | const char * const config_element_symbol_name = "symbol_name"; | |
83 | const char * const config_element_address = "address"; | |
84 | const char * const config_element_offset = "offset"; | |
85 | const char * const config_element_name = "name"; | |
86 | const char * const config_element_enabled = "enabled"; | |
87 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
88 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
89 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
90 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
91 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
92 | const char * const config_element_output = "output"; | |
93 | const char * const config_element_output_type = "output_type"; | |
94 | const char * const config_element_tracefile_size = "tracefile_size"; | |
95 | const char * const config_element_tracefile_count = "tracefile_count"; | |
96 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
97 | const char * const config_element_type = "type"; | |
98 | const char * const config_element_buffer_type = "buffer_type"; | |
99 | const char * const config_element_session = "session"; | |
100 | const char * const config_element_sessions = "sessions"; | |
101 | const char * const config_element_perf = "perf"; | |
102 | const char * const config_element_config = "config"; | |
103 | const char * const config_element_started = "started"; | |
104 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
105 | const char * const config_element_loglevel = "loglevel"; | |
106 | const char * const config_element_loglevel_type = "loglevel_type"; | |
107 | const char * const config_element_filter = "filter"; | |
108 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; | |
109 | const char * const config_element_consumer_output = "consumer_output"; | |
110 | const char * const config_element_destination = "destination"; | |
111 | const char * const config_element_path = "path"; | |
112 | const char * const config_element_net_output = "net_output"; | |
113 | const char * const config_element_control_uri = "control_uri"; | |
114 | const char * const config_element_data_uri = "data_uri"; | |
115 | const char * const config_element_max_size = "max_size"; | |
116 | ||
117 | const char * const config_domain_type_kernel = "KERNEL"; | |
118 | const char * const config_domain_type_ust = "UST"; | |
119 | const char * const config_domain_type_jul = "JUL"; | |
120 | ||
121 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
122 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
123 | const char * const config_buffer_type_global = "GLOBAL"; | |
124 | ||
125 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
126 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
127 | ||
128 | const char * const config_output_type_splice = "SPLICE"; | |
129 | const char * const config_output_type_mmap = "MMAP"; | |
130 | ||
131 | const char * const config_loglevel_type_all = "ALL"; | |
132 | const char * const config_loglevel_type_range = "RANGE"; | |
133 | const char * const config_loglevel_type_single = "SINGLE"; | |
134 | ||
135 | const char * const config_event_type_all = "ALL"; | |
136 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
137 | const char * const config_event_type_probe = "PROBE"; | |
138 | const char * const config_event_type_function = "FUNCTION"; | |
139 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
140 | const char * const config_event_type_noop = "NOOP"; | |
141 | const char * const config_event_type_syscall = "SYSCALL"; | |
142 | const char * const config_event_type_kprobe = "KPROBE"; | |
143 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
144 | ||
145 | const char * const config_event_context_pid = "PID"; | |
146 | const char * const config_event_context_procname = "PROCNAME"; | |
147 | const char * const config_event_context_prio = "PRIO"; | |
148 | const char * const config_event_context_nice = "NICE"; | |
149 | const char * const config_event_context_vpid = "VPID"; | |
150 | const char * const config_event_context_tid = "TID"; | |
151 | const char * const config_event_context_vtid = "VTID"; | |
152 | const char * const config_event_context_ppid = "PPID"; | |
153 | const char * const config_event_context_vppid = "VPPID"; | |
154 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
155 | const char * const config_event_context_hostname = "HOSTNAME"; | |
156 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 157 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
fb198a11 | 158 | |
dcf266c0 JG |
159 | struct consumer_output { |
160 | int enabled; | |
161 | char *path; | |
162 | char *control_uri; | |
163 | char *data_uri; | |
164 | }; | |
165 | ||
1501a7f3 JG |
166 | static int config_entry_handler_filter(struct handler_filter_args *args, |
167 | const char *section, const char *name, const char *value) | |
168 | { | |
169 | int ret = 0; | |
170 | struct config_entry entry = { section, name, value }; | |
171 | ||
172 | assert(args); | |
173 | ||
174 | if (!section || !name || !value) { | |
175 | ret = -EIO; | |
176 | goto end; | |
177 | } | |
178 | ||
179 | if (args->section) { | |
180 | if (strcmp(args->section, section)) { | |
181 | goto end; | |
182 | } | |
183 | } | |
184 | ||
185 | ret = args->handler(&entry, args->user_data); | |
186 | end: | |
187 | return ret; | |
188 | } | |
189 | ||
190 | LTTNG_HIDDEN | |
191 | int config_get_section_entries(const char *override_path, const char *section, | |
192 | config_entry_handler_cb handler, void *user_data) | |
193 | { | |
194 | int ret = 0; | |
7ab02a27 | 195 | char *path; |
1501a7f3 JG |
196 | FILE *config_file = NULL; |
197 | struct handler_filter_args filter = { section, handler, user_data }; | |
198 | ||
7ab02a27 DG |
199 | /* First, try system-wide conf. file. */ |
200 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
201 | ||
202 | config_file = fopen(path, "r"); | |
203 | if (config_file) { | |
204 | DBG("Loading daemon conf file at %s", path); | |
205 | /* | |
206 | * Return value is not very important here since error or not, we | |
207 | * continue and try the next possible conf. file. | |
208 | */ | |
209 | (void) ini_parse_file(config_file, | |
210 | (ini_entry_handler) config_entry_handler_filter, | |
211 | (void *) &filter); | |
212 | fclose(config_file); | |
213 | } | |
214 | ||
215 | /* Second is the user local configuration. */ | |
216 | path = utils_get_home_dir(); | |
217 | if (path) { | |
218 | char fullpath[PATH_MAX]; | |
219 | ||
220 | ret = snprintf(fullpath, sizeof(fullpath), | |
221 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
222 | if (ret < 0) { | |
223 | PERROR("snprintf user conf. path"); | |
224 | goto error; | |
225 | } | |
226 | ||
227 | config_file = fopen(fullpath, "r"); | |
228 | if (config_file) { | |
229 | DBG("Loading daemon user conf file at %s", path); | |
230 | /* | |
231 | * Return value is not very important here since error or not, we | |
232 | * continue and try the next possible conf. file. | |
233 | */ | |
234 | (void) ini_parse_file(config_file, | |
235 | (ini_entry_handler) config_entry_handler_filter, | |
236 | (void *) &filter); | |
237 | fclose(config_file); | |
238 | } | |
239 | } | |
240 | ||
241 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
242 | if (override_path) { |
243 | config_file = fopen(override_path, "r"); | |
244 | if (config_file) { | |
7ab02a27 DG |
245 | DBG("Loading daemon command line conf file at %s", override_path); |
246 | (void) ini_parse_file(config_file, | |
247 | (ini_entry_handler) config_entry_handler_filter, | |
248 | (void *) &filter); | |
249 | fclose(config_file); | |
1501a7f3 JG |
250 | } else { |
251 | ERR("Failed to open daemon configuration file at %s", | |
252 | override_path); | |
253 | ret = -ENOENT; | |
7ab02a27 | 254 | goto error; |
1501a7f3 JG |
255 | } |
256 | } | |
257 | ||
7ab02a27 DG |
258 | /* Everything went well. */ |
259 | ret = 0; | |
1501a7f3 | 260 | |
7ab02a27 | 261 | error: |
1501a7f3 JG |
262 | return ret; |
263 | } | |
264 | ||
265 | LTTNG_HIDDEN | |
266 | int config_parse_value(const char *value) | |
267 | { | |
268 | int i, ret = 0; | |
269 | char *endptr, *lower_str; | |
270 | size_t len; | |
271 | unsigned long v; | |
272 | ||
273 | len = strlen(value); | |
274 | if (!len) { | |
275 | ret = -1; | |
276 | goto end; | |
277 | } | |
278 | ||
279 | v = strtoul(value, &endptr, 10); | |
280 | if (endptr != value) { | |
281 | ret = v; | |
282 | goto end; | |
283 | } | |
284 | ||
285 | lower_str = zmalloc(len + 1); | |
286 | if (!lower_str) { | |
287 | PERROR("zmalloc"); | |
288 | ret = -errno; | |
289 | goto end; | |
290 | } | |
291 | ||
292 | for (i = 0; i < len; i++) { | |
293 | lower_str[i] = tolower(value[i]); | |
294 | } | |
295 | ||
296 | if (!strcmp(lower_str, config_str_yes) || | |
297 | !strcmp(lower_str, config_str_true) || | |
298 | !strcmp(lower_str, config_str_on)) { | |
299 | ret = 1; | |
300 | } else if (!strcmp(lower_str, config_str_no) || | |
301 | !strcmp(lower_str, config_str_false) || | |
302 | !strcmp(lower_str, config_str_off)) { | |
303 | ret = 0; | |
304 | } else { | |
305 | ret = -1; | |
306 | } | |
307 | ||
308 | free(lower_str); | |
309 | end: | |
310 | return ret; | |
311 | } | |
36f2332b JG |
312 | |
313 | /* | |
314 | * Returns a xmlChar string which must be released using xmlFree(). | |
315 | */ | |
316 | static xmlChar *encode_string(const char *in_str) | |
317 | { | |
318 | xmlChar *out_str = NULL; | |
319 | xmlCharEncodingHandlerPtr handler; | |
320 | int out_len, ret, in_len; | |
321 | ||
322 | assert(in_str); | |
323 | ||
324 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
325 | if (!handler) { | |
326 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
327 | goto end; | |
328 | } | |
329 | ||
330 | in_len = strlen(in_str); | |
331 | /* | |
332 | * Add 1 byte for the NULL terminted character. The factor 2 here is | |
333 | * because UTF-8 can be on two bytes so this fits the worst case for each | |
334 | * bytes. | |
335 | */ | |
336 | out_len = (in_len * 2) + 1; | |
337 | out_str = xmlMalloc(out_len); | |
338 | if (!out_str) { | |
339 | goto end; | |
340 | } | |
341 | ||
342 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
343 | if (ret < 0) { | |
344 | xmlFree(out_str); | |
345 | out_str = NULL; | |
346 | goto end; | |
347 | } | |
348 | ||
349 | /* out_len is now the size of out_str */ | |
350 | out_str[out_len] = '\0'; | |
351 | end: | |
352 | return out_str; | |
353 | } | |
354 | ||
355 | LTTNG_HIDDEN | |
356 | struct config_writer *config_writer_create(int fd_output) | |
357 | { | |
358 | int ret; | |
359 | struct config_writer *writer; | |
360 | xmlOutputBufferPtr buffer; | |
361 | ||
362 | writer = zmalloc(sizeof(struct config_writer)); | |
363 | if (!writer) { | |
364 | PERROR("zmalloc config_writer_create"); | |
365 | goto end; | |
366 | } | |
367 | ||
368 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
369 | if (!buffer) { | |
370 | goto error_destroy; | |
371 | } | |
372 | ||
373 | writer->writer = xmlNewTextWriter(buffer); | |
374 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
375 | config_xml_encoding, NULL); | |
376 | if (ret < 0) { | |
377 | goto error_destroy; | |
378 | } | |
379 | ||
380 | ret = xmlTextWriterSetIndentString(writer->writer, | |
381 | BAD_CAST config_xml_indent_string); | |
382 | if (ret) { | |
383 | goto error_destroy; | |
384 | } | |
385 | ||
386 | ret = xmlTextWriterSetIndent(writer->writer, 1); | |
387 | if (ret) { | |
388 | goto error_destroy; | |
389 | } | |
390 | ||
391 | end: | |
392 | return writer; | |
393 | error_destroy: | |
394 | config_writer_destroy(writer); | |
395 | return NULL; | |
396 | } | |
397 | ||
398 | LTTNG_HIDDEN | |
399 | int config_writer_destroy(struct config_writer *writer) | |
400 | { | |
401 | int ret = 0; | |
402 | ||
403 | if (!writer) { | |
404 | ret = -EINVAL; | |
405 | goto end; | |
406 | } | |
407 | ||
408 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
409 | WARN("Could not close XML document"); | |
410 | ret = -EIO; | |
411 | } | |
412 | ||
413 | if (writer->writer) { | |
414 | xmlFreeTextWriter(writer->writer); | |
415 | } | |
416 | ||
417 | free(writer); | |
418 | end: | |
419 | return ret; | |
420 | } | |
421 | ||
422 | LTTNG_HIDDEN | |
423 | int config_writer_open_element(struct config_writer *writer, | |
424 | const char *element_name) | |
425 | { | |
426 | int ret; | |
427 | xmlChar *encoded_element_name; | |
428 | ||
429 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
430 | ret = -1; | |
431 | goto end; | |
432 | } | |
433 | ||
434 | encoded_element_name = encode_string(element_name); | |
435 | if (!encoded_element_name) { | |
436 | ret = -1; | |
437 | goto end; | |
438 | } | |
439 | ||
440 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
441 | xmlFree(encoded_element_name); | |
442 | end: | |
443 | return ret > 0 ? 0 : ret; | |
444 | } | |
445 | ||
446 | LTTNG_HIDDEN | |
447 | int config_writer_close_element(struct config_writer *writer) | |
448 | { | |
449 | int ret; | |
450 | ||
451 | if (!writer || !writer->writer) { | |
452 | ret = -1; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | ret = xmlTextWriterEndElement(writer->writer); | |
457 | end: | |
458 | return ret > 0 ? 0 : ret; | |
459 | } | |
460 | ||
461 | LTTNG_HIDDEN | |
462 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
463 | const char *element_name, uint64_t value) | |
464 | { | |
465 | int ret; | |
466 | xmlChar *encoded_element_name; | |
467 | ||
468 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
469 | ret = -1; | |
470 | goto end; | |
471 | } | |
472 | ||
473 | encoded_element_name = encode_string(element_name); | |
474 | if (!encoded_element_name) { | |
475 | ret = -1; | |
476 | goto end; | |
477 | } | |
478 | ||
479 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
480 | encoded_element_name, "%" PRIu64, value); | |
481 | xmlFree(encoded_element_name); | |
482 | end: | |
483 | return ret > 0 ? 0 : ret; | |
484 | } | |
485 | ||
486 | LTTNG_HIDDEN | |
487 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
488 | const char *element_name, int64_t value) | |
489 | { | |
490 | int ret; | |
491 | xmlChar *encoded_element_name; | |
492 | ||
493 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
494 | ret = -1; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | encoded_element_name = encode_string(element_name); | |
499 | if (!encoded_element_name) { | |
500 | ret = -1; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
505 | encoded_element_name, "%" PRIi64, value); | |
506 | xmlFree(encoded_element_name); | |
507 | end: | |
508 | return ret > 0 ? 0 : ret; | |
509 | } | |
510 | ||
511 | LTTNG_HIDDEN | |
512 | int config_writer_write_element_bool(struct config_writer *writer, | |
513 | const char *element_name, int value) | |
514 | { | |
515 | return config_writer_write_element_string(writer, element_name, | |
516 | value ? config_xml_true : config_xml_false); | |
517 | } | |
518 | ||
519 | LTTNG_HIDDEN | |
520 | int config_writer_write_element_string(struct config_writer *writer, | |
521 | const char *element_name, const char *value) | |
522 | { | |
523 | int ret; | |
524 | xmlChar *encoded_element_name = NULL; | |
525 | xmlChar *encoded_value = NULL; | |
526 | ||
527 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
528 | !value) { | |
529 | ret = -1; | |
530 | goto end; | |
531 | } | |
532 | ||
533 | encoded_element_name = encode_string(element_name); | |
534 | if (!encoded_element_name) { | |
535 | ret = -1; | |
536 | goto end; | |
537 | } | |
538 | ||
539 | encoded_value = encode_string(value); | |
540 | if (!encoded_value) { | |
541 | ret = -1; | |
542 | goto end; | |
543 | } | |
544 | ||
545 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 546 | encoded_value); |
36f2332b JG |
547 | end: |
548 | xmlFree(encoded_element_name); | |
549 | xmlFree(encoded_value); | |
550 | return ret > 0 ? 0 : ret; | |
551 | } | |
dcf266c0 JG |
552 | |
553 | static | |
554 | void xml_error_handler(void *ctx, const char *format, ...) | |
555 | { | |
556 | char *errMsg; | |
557 | va_list args; | |
558 | int ret; | |
559 | ||
560 | va_start(args, format); | |
561 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 562 | va_end(args); |
dcf266c0 JG |
563 | if (ret == -1) { |
564 | ERR("String allocation failed in xml error handler"); | |
565 | return; | |
566 | } | |
dcf266c0 JG |
567 | |
568 | fprintf(stderr, "XML Error: %s", errMsg); | |
569 | free(errMsg); | |
570 | } | |
571 | ||
572 | static | |
573 | void fini_session_config_validation_ctx( | |
574 | struct session_config_validation_ctx *ctx) | |
575 | { | |
576 | if (ctx->parser_ctx) { | |
577 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
578 | } | |
579 | ||
580 | if (ctx->schema) { | |
581 | xmlSchemaFree(ctx->schema); | |
582 | } | |
583 | ||
584 | if (ctx->schema_validation_ctx) { | |
585 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
586 | } | |
587 | ||
588 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
589 | } | |
590 | ||
54e399cb JG |
591 | static |
592 | char *get_session_config_xsd_path() | |
593 | { | |
594 | char *xsd_path; | |
595 | const char *base_path = getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); | |
596 | size_t base_path_len; | |
597 | size_t max_path_len; | |
598 | ||
599 | if (!base_path) { | |
600 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
601 | } | |
602 | ||
603 | base_path_len = strlen(base_path); | |
604 | max_path_len = base_path_len + | |
605 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
606 | xsd_path = zmalloc(max_path_len); | |
607 | if (!xsd_path) { | |
608 | goto end; | |
609 | } | |
610 | ||
611 | strncpy(xsd_path, base_path, max_path_len); | |
612 | if (xsd_path[base_path_len - 1] != '/') { | |
613 | xsd_path[base_path_len++] = '/'; | |
614 | } | |
615 | ||
616 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
617 | max_path_len - base_path_len); | |
618 | end: | |
619 | return xsd_path; | |
620 | } | |
621 | ||
dcf266c0 JG |
622 | static |
623 | int init_session_config_validation_ctx( | |
624 | struct session_config_validation_ctx *ctx) | |
625 | { | |
626 | int ret; | |
54e399cb JG |
627 | char *xsd_path = get_session_config_xsd_path(); |
628 | ||
629 | if (!xsd_path) { | |
630 | ret = -LTTNG_ERR_NOMEM; | |
631 | goto end; | |
632 | } | |
dcf266c0 | 633 | |
54e399cb | 634 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
635 | if (!ctx->parser_ctx) { |
636 | ERR("XSD parser context creation failed"); | |
637 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
638 | goto end; | |
639 | } | |
640 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
641 | xml_error_handler, NULL); | |
642 | ||
643 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
644 | if (!ctx->schema) { | |
645 | ERR("XSD parsing failed"); | |
646 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
647 | goto end; | |
648 | } | |
649 | ||
650 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
651 | if (!ctx->schema_validation_ctx) { | |
652 | ERR("XSD validation context creation failed"); | |
653 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
654 | goto end; | |
655 | } | |
656 | ||
657 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
658 | xml_error_handler, NULL); | |
659 | ret = 0; | |
660 | ||
661 | end: | |
662 | if (ret) { | |
663 | fini_session_config_validation_ctx(ctx); | |
664 | } | |
665 | ||
54e399cb | 666 | free(xsd_path); |
dcf266c0 JG |
667 | return ret; |
668 | } | |
669 | ||
670 | static | |
671 | int parse_uint(xmlChar *str, uint64_t *val) | |
672 | { | |
673 | int ret; | |
674 | char *endptr; | |
675 | ||
676 | if (!str || !val) { | |
677 | ret = -1; | |
678 | goto end; | |
679 | } | |
680 | ||
681 | *val = strtoull((const char *) str, &endptr, 10); | |
682 | if (!endptr || *endptr) { | |
683 | ret = -1; | |
684 | } else { | |
685 | ret = 0; | |
686 | } | |
687 | ||
688 | end: | |
689 | return ret; | |
690 | } | |
691 | ||
692 | static | |
693 | int parse_int(xmlChar *str, int64_t *val) | |
694 | { | |
695 | int ret; | |
696 | char *endptr; | |
697 | ||
698 | if (!str || !val) { | |
699 | ret = -1; | |
700 | goto end; | |
701 | } | |
702 | ||
703 | *val = strtoll((const char *) str, &endptr, 10); | |
704 | if (!endptr || *endptr) { | |
705 | ret = -1; | |
706 | } else { | |
707 | ret = 0; | |
708 | } | |
709 | ||
710 | end: | |
711 | return ret; | |
712 | } | |
713 | ||
714 | static | |
715 | int parse_bool(xmlChar *str, int *val) | |
716 | { | |
717 | int ret = 0; | |
718 | ||
719 | if (!str || !val) { | |
720 | ret = -1; | |
721 | goto end; | |
722 | } | |
723 | ||
724 | if (!strcmp((const char *) str, config_xml_true)) { | |
725 | *val = 1; | |
726 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
727 | *val = 0; | |
728 | } else { | |
729 | WARN("Invalid boolean value encoutered (%s).", | |
730 | (const char *) str); | |
731 | ret = -1; | |
732 | } | |
733 | end: | |
734 | return ret; | |
735 | } | |
736 | ||
737 | static | |
738 | int get_domain_type(xmlChar *domain) | |
739 | { | |
740 | int ret; | |
741 | ||
742 | if (!domain) { | |
743 | goto error; | |
744 | } | |
745 | ||
746 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
747 | ret = LTTNG_DOMAIN_KERNEL; | |
748 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
749 | ret = LTTNG_DOMAIN_UST; | |
750 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
751 | ret = LTTNG_DOMAIN_JUL; | |
752 | } else { | |
753 | goto error; | |
754 | } | |
755 | ||
756 | return ret; | |
757 | error: | |
758 | return -1; | |
759 | } | |
760 | ||
761 | static | |
762 | int get_buffer_type(xmlChar *buffer_type) | |
763 | { | |
764 | int ret; | |
765 | ||
766 | if (!buffer_type) { | |
767 | goto error; | |
768 | } | |
769 | ||
770 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
771 | ret = LTTNG_BUFFER_GLOBAL; | |
772 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
773 | ret = LTTNG_BUFFER_PER_UID; | |
774 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
775 | ret = LTTNG_BUFFER_PER_PID; | |
776 | } else { | |
777 | goto error; | |
778 | } | |
779 | ||
780 | return ret; | |
781 | error: | |
782 | return -1; | |
783 | } | |
784 | ||
785 | static | |
786 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
787 | { | |
788 | int ret; | |
789 | ||
790 | if (!overwrite_mode) { | |
791 | goto error; | |
792 | } | |
793 | ||
794 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
795 | ret = 1; | |
796 | } else if (!strcmp((char *) overwrite_mode, | |
797 | config_overwrite_mode_discard)) { | |
798 | ret = 0; | |
799 | } else { | |
800 | goto error; | |
801 | } | |
802 | ||
803 | return ret; | |
804 | error: | |
805 | return -1; | |
806 | } | |
807 | ||
808 | static | |
809 | int get_output_type(xmlChar *output_type) | |
810 | { | |
811 | int ret; | |
812 | ||
813 | if (!output_type) { | |
814 | goto error; | |
815 | } | |
816 | ||
817 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
818 | ret = LTTNG_EVENT_MMAP; | |
819 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
820 | ret = LTTNG_EVENT_SPLICE; | |
821 | } else { | |
822 | goto error; | |
823 | } | |
824 | ||
825 | return ret; | |
826 | error: | |
827 | return -1; | |
828 | } | |
829 | ||
830 | static | |
831 | int get_event_type(xmlChar *event_type) | |
832 | { | |
833 | int ret; | |
834 | ||
835 | if (!event_type) { | |
836 | goto error; | |
837 | } | |
838 | ||
839 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
840 | ret = LTTNG_EVENT_ALL; | |
841 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
842 | ret = LTTNG_EVENT_TRACEPOINT; | |
843 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
844 | ret = LTTNG_EVENT_PROBE; | |
845 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
846 | ret = LTTNG_EVENT_FUNCTION; | |
847 | } else if (!strcmp((char *) event_type, | |
848 | config_event_type_function_entry)) { | |
849 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
850 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
851 | ret = LTTNG_EVENT_NOOP; | |
852 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
853 | ret = LTTNG_EVENT_SYSCALL; | |
854 | } else { | |
855 | goto error; | |
856 | } | |
857 | ||
858 | return ret; | |
859 | error: | |
860 | return -1; | |
861 | } | |
862 | ||
863 | static | |
864 | int get_loglevel_type(xmlChar *loglevel_type) | |
865 | { | |
866 | int ret; | |
867 | ||
868 | if (!loglevel_type) { | |
869 | goto error; | |
870 | } | |
871 | ||
872 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
873 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
874 | } else if (!strcmp((char *) loglevel_type, | |
875 | config_loglevel_type_range)) { | |
876 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
877 | } else if (!strcmp((char *) loglevel_type, | |
878 | config_loglevel_type_single)) { | |
879 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
880 | } else { | |
881 | goto error; | |
882 | } | |
883 | ||
884 | return ret; | |
885 | error: | |
886 | return -1; | |
887 | } | |
888 | ||
889 | /* | |
890 | * Return the context type or -1 on error. | |
891 | */ | |
892 | static | |
893 | int get_context_type(xmlChar *context_type) | |
894 | { | |
895 | int ret; | |
896 | ||
897 | if (!context_type) { | |
898 | goto error; | |
899 | } | |
900 | ||
901 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
902 | ret = LTTNG_EVENT_CONTEXT_PID; | |
903 | } else if (!strcmp((char *) context_type, | |
904 | config_event_context_procname)) { | |
905 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
906 | } else if (!strcmp((char *) context_type, | |
907 | config_event_context_prio)) { | |
908 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
909 | } else if (!strcmp((char *) context_type, | |
910 | config_event_context_nice)) { | |
911 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
912 | } else if (!strcmp((char *) context_type, | |
913 | config_event_context_vpid)) { | |
914 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
915 | } else if (!strcmp((char *) context_type, | |
916 | config_event_context_tid)) { | |
917 | ret = LTTNG_EVENT_CONTEXT_TID; | |
918 | } else if (!strcmp((char *) context_type, | |
919 | config_event_context_vtid)) { | |
920 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
921 | } else if (!strcmp((char *) context_type, | |
922 | config_event_context_ppid)) { | |
923 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
924 | } else if (!strcmp((char *) context_type, | |
925 | config_event_context_vppid)) { | |
926 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
927 | } else if (!strcmp((char *) context_type, | |
928 | config_event_context_pthread_id)) { | |
929 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
930 | } else if (!strcmp((char *) context_type, | |
931 | config_event_context_hostname)) { | |
932 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
933 | } else if (!strcmp((char *) context_type, | |
934 | config_event_context_ip)) { | |
935 | ret = LTTNG_EVENT_CONTEXT_IP; | |
936 | } else { | |
937 | goto error; | |
938 | } | |
939 | ||
940 | return ret; | |
941 | error: | |
942 | return -1; | |
943 | } | |
944 | ||
945 | static | |
946 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
947 | { | |
948 | int ret; | |
949 | xmlNodePtr node; | |
950 | ||
951 | for (node = xmlFirstElementChild(domain_node); node; | |
952 | node = xmlNextElementSibling(node)) { | |
953 | if (!strcmp((const char *) node->name, config_element_type)) { | |
954 | /* domain type */ | |
955 | xmlChar *node_content = xmlNodeGetContent(node); | |
956 | if (!node_content) { | |
957 | ret = -LTTNG_ERR_NOMEM; | |
958 | goto end; | |
959 | } | |
960 | ||
961 | ret = get_domain_type(node_content); | |
962 | free(node_content); | |
963 | if (ret < 0) { | |
964 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
965 | goto end; | |
966 | } | |
967 | ||
968 | domain->type = ret; | |
969 | } else if (!strcmp((const char *) node->name, | |
970 | config_element_buffer_type)) { | |
971 | /* buffer type */ | |
972 | xmlChar *node_content = xmlNodeGetContent(node); | |
973 | if (!node_content) { | |
974 | ret = -LTTNG_ERR_NOMEM; | |
975 | goto end; | |
976 | } | |
977 | ||
978 | ret = get_buffer_type(node_content); | |
979 | free(node_content); | |
980 | if (ret < 0) { | |
981 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
982 | goto end; | |
983 | } | |
984 | ||
985 | domain->buf_type = ret; | |
986 | } | |
987 | } | |
988 | ret = 0; | |
989 | end: | |
990 | return ret; | |
991 | } | |
992 | ||
993 | static | |
994 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
995 | char **data_uri) | |
996 | { | |
997 | xmlNodePtr node; | |
998 | ||
999 | for (node = xmlFirstElementChild(net_output_node); node; | |
1000 | node = xmlNextElementSibling(node)) { | |
1001 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1002 | /* control_uri */ | |
1003 | *control_uri = (char *) xmlNodeGetContent(node); | |
1004 | if (!*control_uri) { | |
1005 | break; | |
1006 | } | |
1007 | } else { | |
1008 | /* data_uri */ | |
1009 | *data_uri = (char *) xmlNodeGetContent(node); | |
1010 | if (!*data_uri) { | |
1011 | break; | |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1017 | } | |
1018 | ||
1019 | static | |
1020 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1021 | struct consumer_output *output) | |
1022 | { | |
1023 | int ret; | |
1024 | xmlNodePtr node; | |
1025 | ||
1026 | assert(output); | |
1027 | ||
1028 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1029 | node = xmlNextElementSibling(node)) { | |
1030 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1031 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1032 | ||
1033 | /* enabled */ | |
1034 | if (!enabled_str) { | |
1035 | ret = -LTTNG_ERR_NOMEM; | |
1036 | goto end; | |
1037 | } | |
1038 | ||
1039 | ret = parse_bool(enabled_str, &output->enabled); | |
1040 | free(enabled_str); | |
1041 | if (ret) { | |
1042 | goto end; | |
1043 | } | |
1044 | } else { | |
1045 | xmlNodePtr output_type_node; | |
1046 | ||
1047 | /* destination */ | |
1048 | output_type_node = xmlFirstElementChild(node); | |
1049 | if (!output_type_node) { | |
1050 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1051 | goto end; | |
1052 | } | |
1053 | ||
1054 | if (!strcmp((const char *) output_type_node->name, | |
1055 | config_element_path)) { | |
1056 | /* path */ | |
1057 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1058 | if (!output->path) { | |
1059 | ret = -LTTNG_ERR_NOMEM; | |
1060 | goto end; | |
1061 | } | |
1062 | } else { | |
1063 | /* net_output */ | |
1064 | ret = get_net_output_uris(output_type_node, | |
1065 | &output->control_uri, &output->data_uri); | |
1066 | if (ret) { | |
1067 | goto end; | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | ret = 0; | |
1073 | ||
1074 | end: | |
1075 | if (ret) { | |
1076 | free(output->path); | |
1077 | free(output->control_uri); | |
1078 | free(output->data_uri); | |
1079 | memset(output, 0, sizeof(struct consumer_output)); | |
1080 | } | |
1081 | return ret; | |
1082 | } | |
1083 | ||
1084 | static | |
1085 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1086 | const char *control_uri, const char *data_uri) | |
1087 | { | |
1088 | int ret; | |
1089 | struct lttng_handle *handle; | |
1090 | const char *uri = NULL; | |
1091 | ||
1092 | assert(name); | |
1093 | assert(domain); | |
1094 | ||
1095 | handle = lttng_create_handle(name, domain); | |
1096 | if (!handle) { | |
1097 | ret = -LTTNG_ERR_NOMEM; | |
1098 | goto end; | |
1099 | } | |
1100 | ||
1101 | if (!control_uri || !data_uri) { | |
1102 | uri = control_uri ? control_uri : data_uri; | |
1103 | control_uri = uri; | |
1104 | data_uri = uri; | |
1105 | } | |
1106 | ||
1107 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1108 | lttng_destroy_handle(handle); | |
1109 | end: | |
1110 | return ret; | |
1111 | } | |
1112 | ||
1113 | static | |
1114 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1115 | { | |
1116 | int ret; | |
1117 | xmlNodePtr node = NULL; | |
1118 | xmlNodePtr snapshot_output_list_node; | |
1119 | xmlNodePtr snapshot_output_node; | |
1120 | ||
1121 | assert(session_name); | |
1122 | ||
1123 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1124 | if (ret) { | |
1125 | goto end; | |
1126 | } | |
1127 | ||
1128 | if (!output_node) { | |
1129 | goto end; | |
1130 | } | |
1131 | ||
1132 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1133 | ||
1134 | /* Parse and create snapshot outputs */ | |
1135 | ||
1136 | for (snapshot_output_node = | |
1137 | xmlFirstElementChild(snapshot_output_list_node); | |
1138 | snapshot_output_node; snapshot_output_node = | |
1139 | xmlNextElementSibling(snapshot_output_node)) { | |
1140 | char *name = NULL; | |
1141 | uint64_t max_size = UINT64_MAX; | |
1142 | struct consumer_output output = { 0 }; | |
1143 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1144 | ||
1145 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1146 | node = xmlNextElementSibling(node)) { | |
1147 | if (!strcmp((const char *) node->name, | |
1148 | config_element_name)) { | |
1149 | /* name */ | |
1150 | name = (char *) xmlNodeGetContent(node); | |
1151 | if (!name) { | |
1152 | ret = -LTTNG_ERR_NOMEM; | |
1153 | goto error_snapshot_output; | |
1154 | } | |
1155 | } else if (!strcmp((const char *) node->name, | |
1156 | config_element_max_size)) { | |
1157 | xmlChar *content = xmlNodeGetContent(node); | |
1158 | ||
1159 | /* max_size */ | |
1160 | if (!content) { | |
1161 | ret = -LTTNG_ERR_NOMEM; | |
1162 | goto error_snapshot_output; | |
1163 | } | |
1164 | ret = parse_uint(content, &max_size); | |
1165 | free(content); | |
1166 | if (ret) { | |
1167 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1168 | goto error_snapshot_output; | |
1169 | } | |
1170 | } else { | |
1171 | /* consumer_output */ | |
1172 | ret = process_consumer_output(node, &output); | |
1173 | if (ret) { | |
1174 | goto error_snapshot_output; | |
1175 | } | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | snapshot_output = lttng_snapshot_output_create(); | |
1180 | if (!snapshot_output) { | |
1181 | ret = -LTTNG_ERR_NOMEM; | |
1182 | goto error_snapshot_output; | |
1183 | } | |
1184 | ||
1185 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1186 | if (ret) { | |
1187 | goto error_snapshot_output; | |
1188 | } | |
1189 | ||
1190 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1191 | if (ret) { | |
1192 | goto error_snapshot_output; | |
1193 | } | |
1194 | ||
1195 | if (output.path) { | |
1196 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1197 | snapshot_output); | |
1198 | if (ret) { | |
1199 | goto error_snapshot_output; | |
1200 | } | |
1201 | } else { | |
1202 | if (output.control_uri) { | |
1203 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1204 | snapshot_output); | |
1205 | if (ret) { | |
1206 | goto error_snapshot_output; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | if (output.data_uri) { | |
1211 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1212 | snapshot_output); | |
1213 | if (ret) { | |
1214 | goto error_snapshot_output; | |
1215 | } | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1220 | error_snapshot_output: | |
1221 | free(name); | |
1222 | free(output.path); | |
1223 | free(output.control_uri); | |
1224 | free(output.data_uri); | |
1225 | lttng_snapshot_output_destroy(snapshot_output); | |
1226 | if (ret) { | |
1227 | goto end; | |
1228 | } | |
1229 | } | |
1230 | end: | |
1231 | return ret; | |
1232 | } | |
1233 | ||
1234 | static | |
1235 | int create_session(const char *name, | |
1236 | struct lttng_domain *kernel_domain, | |
1237 | struct lttng_domain *ust_domain, | |
1238 | struct lttng_domain *jul_domain, | |
1239 | xmlNodePtr output_node, | |
1240 | uint64_t live_timer_interval) | |
1241 | { | |
1242 | int ret; | |
1243 | struct consumer_output output = { 0 }; | |
1244 | xmlNodePtr consumer_output_node; | |
1245 | ||
1246 | assert(name); | |
dcf266c0 JG |
1247 | |
1248 | if (output_node) { | |
1249 | consumer_output_node = xmlFirstElementChild(output_node); | |
1250 | if (!consumer_output_node) { | |
1251 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1252 | goto end; | |
1253 | } | |
1254 | ||
1255 | if (strcmp((const char *) consumer_output_node->name, | |
1256 | config_element_consumer_output)) { | |
1257 | WARN("Invalid output type, expected %s node", | |
1258 | config_element_consumer_output); | |
1259 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1260 | goto end; | |
1261 | } | |
1262 | ||
1263 | ret = process_consumer_output(consumer_output_node, &output); | |
1264 | if (ret) { | |
1265 | goto end; | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | if (live_timer_interval != UINT64_MAX && | |
1270 | !output.control_uri && !output.data_uri) { | |
1271 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1272 | goto end; | |
1273 | } | |
1274 | ||
1275 | if (output.control_uri || output.data_uri) { | |
1276 | int i; | |
1277 | struct lttng_domain *domain; | |
1278 | struct lttng_domain *domains[] = | |
1279 | { kernel_domain, ust_domain, jul_domain }; | |
1280 | ||
1281 | /* network destination */ | |
1282 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1283 | /* |
1284 | * URLs are provided for sure since the test above make sure that | |
1285 | * with a live timer the data and control URIs are provided. So, | |
1286 | * NULL is passed here and will be set right after. | |
1287 | */ | |
1288 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1289 | } else { |
1290 | ret = lttng_create_session(name, NULL); | |
1291 | } | |
1292 | if (ret) { | |
1293 | goto end; | |
1294 | } | |
1295 | ||
301423df | 1296 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1297 | domain = domains[i]; |
1298 | if (!domain) { | |
1299 | continue; | |
1300 | } | |
1301 | ||
1302 | ret = create_session_net_output(name, domain, output.control_uri, | |
1303 | output.data_uri); | |
1304 | if (ret) { | |
1305 | goto end; | |
1306 | } | |
1307 | } | |
1308 | } else { | |
1309 | /* either local output or no output */ | |
1310 | ret = lttng_create_session(name, output.path); | |
1311 | if (ret) { | |
1312 | goto end; | |
1313 | } | |
1314 | } | |
1315 | end: | |
1316 | free(output.path); | |
1317 | free(output.control_uri); | |
1318 | free(output.data_uri); | |
1319 | return ret; | |
1320 | } | |
1321 | static | |
1322 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1323 | struct lttng_event_probe_attr *attr) | |
1324 | { | |
1325 | int ret; | |
1326 | ||
1327 | assert(probe_attribute_node); | |
1328 | assert(attr); | |
1329 | ||
1330 | if (!strcmp((const char *) probe_attribute_node->name, | |
1331 | config_element_address)) { | |
1332 | xmlChar *content; | |
1333 | uint64_t addr = 0; | |
1334 | ||
1335 | /* addr */ | |
1336 | content = xmlNodeGetContent(probe_attribute_node); | |
1337 | if (!content) { | |
1338 | ret = -LTTNG_ERR_NOMEM; | |
1339 | goto end; | |
1340 | } | |
1341 | ||
1342 | ret = parse_uint(content, &addr); | |
1343 | free(content); | |
1344 | if (ret) { | |
1345 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1346 | goto end; | |
1347 | } | |
1348 | ||
1349 | attr->addr = addr; | |
1350 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1351 | config_element_offset)) { | |
1352 | xmlChar *content; | |
1353 | uint64_t offset = 0; | |
1354 | ||
1355 | /* offset */ | |
1356 | content = xmlNodeGetContent(probe_attribute_node); | |
1357 | if (!content) { | |
1358 | ret = -LTTNG_ERR_NOMEM; | |
1359 | goto end; | |
1360 | } | |
1361 | ||
1362 | ret = parse_uint(content, &offset); | |
1363 | free(content); | |
1364 | if (ret) { | |
1365 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1366 | goto end; | |
1367 | } | |
1368 | ||
1369 | attr->offset = offset; | |
1370 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1371 | config_element_symbol_name)) { | |
1372 | xmlChar *content; | |
1373 | size_t name_len; | |
1374 | ||
1375 | /* symbol_name */ | |
1376 | content = xmlNodeGetContent(probe_attribute_node); | |
1377 | if (!content) { | |
1378 | ret = -LTTNG_ERR_NOMEM; | |
1379 | goto end; | |
1380 | } | |
1381 | ||
1382 | name_len = strlen((char *) content); | |
1383 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1384 | WARN("symbol_name too long."); | |
1385 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1386 | free(content); | |
1387 | goto end; | |
1388 | } | |
1389 | ||
1390 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1391 | free(content); | |
1392 | } | |
1393 | ret = 0; | |
1394 | end: | |
1395 | return ret; | |
1396 | } | |
1397 | ||
1398 | static | |
1399 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1400 | const char *channel_name) | |
1401 | { | |
1402 | int ret, i; | |
1403 | xmlNodePtr node; | |
1404 | struct lttng_event event; | |
1405 | char **exclusions = NULL; | |
1406 | unsigned long exclusion_count = 0; | |
1407 | char *filter_expression = NULL; | |
1408 | ||
1409 | assert(event_node); | |
1410 | assert(handle); | |
1411 | assert(channel_name); | |
1412 | ||
1413 | memset(&event, 0, sizeof(event)); | |
1414 | ||
1415 | for (node = xmlFirstElementChild(event_node); node; | |
1416 | node = xmlNextElementSibling(node)) { | |
1417 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1418 | xmlChar *content; | |
1419 | size_t name_len; | |
1420 | ||
1421 | /* name */ | |
1422 | content = xmlNodeGetContent(node); | |
1423 | if (!content) { | |
1424 | ret = -LTTNG_ERR_NOMEM; | |
1425 | goto end; | |
1426 | } | |
1427 | ||
1428 | name_len = strlen((char *) content); | |
1429 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1430 | WARN("Channel name too long."); | |
1431 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1432 | free(content); | |
1433 | goto end; | |
1434 | } | |
1435 | ||
1436 | strncpy(event.name, (const char *) content, name_len); | |
1437 | free(content); | |
1438 | } else if (!strcmp((const char *) node->name, | |
1439 | config_element_enabled)) { | |
1440 | xmlChar *content = xmlNodeGetContent(node); | |
1441 | ||
1442 | /* enabled */ | |
1443 | if (!content) { | |
1444 | ret = -LTTNG_ERR_NOMEM; | |
1445 | goto end; | |
1446 | } | |
1447 | ||
1448 | ret = parse_bool(content, &event.enabled); | |
1449 | free(content); | |
1450 | if (ret) { | |
1451 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1452 | goto end; | |
1453 | } | |
1454 | } else if (!strcmp((const char *) node->name, | |
1455 | config_element_type)) { | |
1456 | xmlChar *content = xmlNodeGetContent(node); | |
1457 | ||
1458 | /* type */ | |
1459 | if (!content) { | |
1460 | ret = -LTTNG_ERR_NOMEM; | |
1461 | goto end; | |
1462 | } | |
1463 | ||
1464 | ret = get_event_type(content); | |
1465 | free(content); | |
1466 | if (ret < 0) { | |
1467 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1468 | goto end; | |
1469 | } | |
1470 | ||
1471 | event.type = ret; | |
1472 | } else if (!strcmp((const char *) node->name, | |
1473 | config_element_loglevel_type)) { | |
1474 | xmlChar *content = xmlNodeGetContent(node); | |
1475 | ||
1476 | /* loglevel_type */ | |
1477 | if (!content) { | |
1478 | ret = -LTTNG_ERR_NOMEM; | |
1479 | goto end; | |
1480 | } | |
1481 | ||
1482 | ret = get_loglevel_type(content); | |
1483 | free(content); | |
1484 | if (ret < 0) { | |
1485 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1486 | goto end; | |
1487 | } | |
1488 | ||
1489 | event.loglevel_type = ret; | |
1490 | } else if (!strcmp((const char *) node->name, | |
1491 | config_element_loglevel)) { | |
1492 | xmlChar *content; | |
1493 | int64_t loglevel = 0; | |
1494 | ||
1495 | /* loglevel */ | |
1496 | content = xmlNodeGetContent(node); | |
1497 | if (!content) { | |
1498 | ret = -LTTNG_ERR_NOMEM; | |
1499 | goto end; | |
1500 | } | |
1501 | ||
1502 | ret = parse_int(content, &loglevel); | |
1503 | free(content); | |
1504 | if (ret) { | |
1505 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1506 | goto end; | |
1507 | } | |
1508 | ||
1509 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1510 | WARN("loglevel out of range."); | |
1511 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1512 | goto end; | |
1513 | } | |
1514 | ||
1515 | event.loglevel = loglevel; | |
1516 | } else if (!strcmp((const char *) node->name, | |
1517 | config_element_filter)) { | |
1518 | xmlChar *content = | |
1519 | xmlNodeGetContent(node); | |
1520 | ||
1521 | /* filter */ | |
1522 | if (!content) { | |
1523 | ret = -LTTNG_ERR_NOMEM; | |
1524 | goto end; | |
1525 | } | |
1526 | ||
1527 | filter_expression = strdup((char *) content); | |
1528 | free(content); | |
1529 | if (!filter_expression) { | |
1530 | ret = -LTTNG_ERR_NOMEM; | |
1531 | goto end; | |
1532 | } | |
1533 | } else if (!strcmp((const char *) node->name, | |
1534 | config_element_exclusions)) { | |
1535 | xmlNodePtr exclusion_node; | |
1536 | int exclusion_index = 0; | |
1537 | ||
1538 | /* exclusions */ | |
1539 | if (exclusions) { | |
1540 | /* | |
1541 | * Exclusions has already been initialized, | |
1542 | * invalid file. | |
1543 | */ | |
1544 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1545 | goto end; | |
1546 | } | |
1547 | ||
1548 | exclusion_count = xmlChildElementCount(node); | |
1549 | if (!exclusion_count) { | |
1550 | continue; | |
1551 | } | |
1552 | ||
1553 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1554 | if (!exclusions) { | |
1555 | exclusion_count = 0; | |
1556 | ret = -LTTNG_ERR_NOMEM; | |
1557 | goto end; | |
1558 | } | |
1559 | ||
1560 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1561 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1562 | xmlChar *content = | |
1563 | xmlNodeGetContent(exclusion_node); | |
1564 | ||
1565 | if (!content) { | |
1566 | ret = -LTTNG_ERR_NOMEM; | |
1567 | goto end; | |
1568 | } | |
1569 | ||
1570 | exclusions[exclusion_index] = strdup((const char *) content); | |
1571 | free(content); | |
1572 | if (!exclusions[exclusion_index]) { | |
1573 | ret = -LTTNG_ERR_NOMEM; | |
1574 | goto end; | |
1575 | } | |
1576 | exclusion_index++; | |
1577 | } | |
1578 | ||
1579 | event.exclusion = 1; | |
1580 | } else if (!strcmp((const char *) node->name, | |
1581 | config_element_attributes)) { | |
1582 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1583 | ||
1584 | /* attributes */ | |
1585 | if (!attribute_node) { | |
1586 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1587 | goto end; | |
1588 | } | |
1589 | ||
1590 | if (!strcmp((const char *) node->name, | |
1591 | config_element_probe_attributes)) { | |
1592 | xmlNodePtr probe_attribute_node; | |
1593 | ||
1594 | /* probe_attributes */ | |
1595 | for (probe_attribute_node = | |
1596 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1597 | probe_attribute_node = xmlNextElementSibling( | |
1598 | probe_attribute_node)) { | |
1599 | ||
1600 | ret = process_probe_attribute_node(probe_attribute_node, | |
1601 | &event.attr.probe); | |
1602 | if (ret) { | |
1603 | goto end; | |
1604 | } | |
1605 | } | |
1606 | } else { | |
1607 | size_t sym_len; | |
1608 | xmlChar *content; | |
1609 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1610 | ||
1611 | /* function_attributes */ | |
1612 | content = xmlNodeGetContent(symbol_node); | |
1613 | if (!content) { | |
1614 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1615 | goto end; | |
1616 | } | |
1617 | ||
1618 | sym_len = strlen((char *) content); | |
1619 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1620 | WARN("Function name too long."); | |
1621 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1622 | free(content); | |
1623 | goto end; | |
1624 | } | |
1625 | ||
1626 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1627 | sym_len); | |
1628 | free(content); | |
1629 | } | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1634 | filter_expression, exclusion_count, exclusions); | |
1635 | end: | |
1636 | for (i = 0; i < exclusion_count; i++) { | |
1637 | free(exclusions[i]); | |
1638 | } | |
1639 | ||
1640 | free(exclusions); | |
1641 | free(filter_expression); | |
1642 | return ret; | |
1643 | } | |
1644 | ||
1645 | static | |
1646 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1647 | const char *channel_name) | |
1648 | { | |
1649 | int ret = 0; | |
1650 | xmlNodePtr node; | |
1651 | ||
1652 | assert(events_node); | |
1653 | assert(handle); | |
1654 | assert(channel_name); | |
1655 | ||
1656 | for (node = xmlFirstElementChild(events_node); node; | |
1657 | node = xmlNextElementSibling(node)) { | |
1658 | ret = process_event_node(node, handle, channel_name); | |
1659 | if (ret) { | |
1660 | goto end; | |
1661 | } | |
1662 | } | |
1663 | end: | |
1664 | return ret; | |
1665 | } | |
1666 | ||
1667 | static | |
1668 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1669 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1670 | xmlNodePtr *events_node) | |
1671 | { | |
1672 | int ret; | |
1673 | ||
1674 | assert(attr_node); | |
1675 | assert(channel); | |
1676 | assert(contexts_node); | |
1677 | assert(events_node); | |
1678 | ||
1679 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1680 | xmlChar *content; | |
1681 | size_t name_len; | |
1682 | ||
1683 | /* name */ | |
1684 | content = xmlNodeGetContent(attr_node); | |
1685 | if (!content) { | |
1686 | ret = -LTTNG_ERR_NOMEM; | |
1687 | goto end; | |
1688 | } | |
1689 | ||
1690 | name_len = strlen((char *) content); | |
1691 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1692 | WARN("Channel name too long."); | |
1693 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1694 | free(content); | |
1695 | goto end; | |
1696 | } | |
1697 | ||
1698 | strncpy(channel->name, (const char *) content, name_len); | |
1699 | free(content); | |
1700 | } else if (!strcmp((const char *) attr_node->name, | |
1701 | config_element_enabled)) { | |
1702 | xmlChar *content; | |
1703 | int enabled; | |
1704 | ||
1705 | /* enabled */ | |
1706 | content = xmlNodeGetContent(attr_node); | |
1707 | if (!content) { | |
1708 | ret = -LTTNG_ERR_NOMEM; | |
1709 | goto end; | |
1710 | } | |
1711 | ||
1712 | ret = parse_bool(content, &enabled); | |
1713 | free(content); | |
1714 | if (ret) { | |
1715 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1716 | goto end; | |
1717 | } | |
1718 | ||
1719 | channel->enabled = enabled; | |
1720 | } else if (!strcmp((const char *) attr_node->name, | |
1721 | config_element_overwrite_mode)) { | |
1722 | xmlChar *content; | |
1723 | ||
1724 | /* overwrite_mode */ | |
1725 | content = xmlNodeGetContent(attr_node); | |
1726 | if (!content) { | |
1727 | ret = -LTTNG_ERR_NOMEM; | |
1728 | goto end; | |
1729 | } | |
1730 | ||
1731 | ret = get_overwrite_mode(content); | |
1732 | free(content); | |
1733 | if (ret < 0) { | |
1734 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1735 | goto end; | |
1736 | } | |
1737 | ||
1738 | channel->attr.overwrite = ret; | |
1739 | } else if (!strcmp((const char *) attr_node->name, | |
1740 | config_element_subbuf_size)) { | |
1741 | xmlChar *content; | |
1742 | ||
1743 | /* subbuffer_size */ | |
1744 | content = xmlNodeGetContent(attr_node); | |
1745 | if (!content) { | |
1746 | ret = -LTTNG_ERR_NOMEM; | |
1747 | goto end; | |
1748 | } | |
1749 | ||
1750 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1751 | free(content); | |
1752 | if (ret) { | |
1753 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1754 | goto end; | |
1755 | } | |
1756 | } else if (!strcmp((const char *) attr_node->name, | |
1757 | config_element_num_subbuf)) { | |
1758 | xmlChar *content; | |
1759 | ||
1760 | /* subbuffer_count */ | |
1761 | content = xmlNodeGetContent(attr_node); | |
1762 | if (!content) { | |
1763 | ret = -LTTNG_ERR_NOMEM; | |
1764 | goto end; | |
1765 | } | |
1766 | ||
1767 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1768 | free(content); | |
1769 | if (ret) { | |
1770 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1771 | goto end; | |
1772 | } | |
1773 | } else if (!strcmp((const char *) attr_node->name, | |
1774 | config_element_switch_timer_interval)) { | |
1775 | xmlChar *content; | |
1776 | uint64_t switch_timer_interval = 0; | |
1777 | ||
1778 | /* switch_timer_interval */ | |
1779 | content = xmlNodeGetContent(attr_node); | |
1780 | if (!content) { | |
1781 | ret = -LTTNG_ERR_NOMEM; | |
1782 | goto end; | |
1783 | } | |
1784 | ||
1785 | ret = parse_uint(content, &switch_timer_interval); | |
1786 | free(content); | |
1787 | if (ret) { | |
1788 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1789 | goto end; | |
1790 | } | |
1791 | ||
1792 | if (switch_timer_interval > UINT_MAX) { | |
1793 | WARN("switch_timer_interval out of range."); | |
1794 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1795 | goto end; | |
1796 | } | |
1797 | ||
1798 | channel->attr.switch_timer_interval = | |
1799 | switch_timer_interval; | |
1800 | } else if (!strcmp((const char *) attr_node->name, | |
1801 | config_element_read_timer_interval)) { | |
1802 | xmlChar *content; | |
1803 | uint64_t read_timer_interval = 0; | |
1804 | ||
1805 | /* read_timer_interval */ | |
1806 | content = xmlNodeGetContent(attr_node); | |
1807 | if (!content) { | |
1808 | ret = -LTTNG_ERR_NOMEM; | |
1809 | goto end; | |
1810 | } | |
1811 | ||
1812 | ret = parse_uint(content, &read_timer_interval); | |
1813 | free(content); | |
1814 | if (ret) { | |
1815 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1816 | goto end; | |
1817 | } | |
1818 | ||
1819 | if (read_timer_interval > UINT_MAX) { | |
1820 | WARN("read_timer_interval out of range."); | |
1821 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1822 | goto end; | |
1823 | } | |
1824 | ||
1825 | channel->attr.read_timer_interval = | |
1826 | read_timer_interval; | |
1827 | } else if (!strcmp((const char *) attr_node->name, | |
1828 | config_element_output_type)) { | |
1829 | xmlChar *content; | |
1830 | ||
1831 | /* output_type */ | |
1832 | content = xmlNodeGetContent(attr_node); | |
1833 | if (!content) { | |
1834 | ret = -LTTNG_ERR_NOMEM; | |
1835 | goto end; | |
1836 | } | |
1837 | ||
1838 | ret = get_output_type(content); | |
1839 | free(content); | |
1840 | if (ret < 0) { | |
1841 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1842 | goto end; | |
1843 | } | |
1844 | ||
1845 | channel->attr.output = ret; | |
1846 | } else if (!strcmp((const char *) attr_node->name, | |
1847 | config_element_tracefile_size)) { | |
1848 | xmlChar *content; | |
1849 | ||
1850 | /* tracefile_size */ | |
1851 | content = xmlNodeGetContent(attr_node); | |
1852 | if (!content) { | |
1853 | ret = -LTTNG_ERR_NOMEM; | |
1854 | goto end; | |
1855 | } | |
1856 | ||
1857 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1858 | free(content); | |
1859 | if (ret) { | |
1860 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1861 | goto end; | |
1862 | } | |
1863 | } else if (!strcmp((const char *) attr_node->name, | |
1864 | config_element_tracefile_count)) { | |
1865 | xmlChar *content; | |
1866 | ||
1867 | /* tracefile_count */ | |
1868 | content = xmlNodeGetContent(attr_node); | |
1869 | if (!content) { | |
1870 | ret = -LTTNG_ERR_NOMEM; | |
1871 | goto end; | |
1872 | } | |
1873 | ||
1874 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1875 | free(content); | |
1876 | if (ret) { | |
1877 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1878 | goto end; | |
1879 | } | |
1880 | } else if (!strcmp((const char *) attr_node->name, | |
1881 | config_element_live_timer_interval)) { | |
1882 | xmlChar *content; | |
1883 | uint64_t live_timer_interval = 0; | |
1884 | ||
1885 | /* live_timer_interval */ | |
1886 | content = xmlNodeGetContent(attr_node); | |
1887 | if (!content) { | |
1888 | ret = -LTTNG_ERR_NOMEM; | |
1889 | goto end; | |
1890 | } | |
1891 | ||
1892 | ret = parse_uint(content, &live_timer_interval); | |
1893 | free(content); | |
1894 | if (ret) { | |
1895 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1896 | goto end; | |
1897 | } | |
1898 | ||
1899 | if (live_timer_interval > UINT_MAX) { | |
1900 | WARN("live_timer_interval out of range."); | |
1901 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1902 | goto end; | |
1903 | } | |
1904 | ||
1905 | channel->attr.live_timer_interval = | |
1906 | live_timer_interval; | |
1907 | } else if (!strcmp((const char *) attr_node->name, | |
1908 | config_element_events)) { | |
1909 | /* events */ | |
1910 | *events_node = attr_node; | |
1911 | } else { | |
1912 | /* contexts */ | |
1913 | *contexts_node = attr_node; | |
1914 | } | |
1915 | ret = 0; | |
1916 | end: | |
1917 | return ret; | |
1918 | } | |
1919 | ||
1920 | static | |
1921 | int process_context_node(xmlNodePtr context_node, | |
1922 | struct lttng_handle *handle, const char *channel_name) | |
1923 | { | |
1924 | int ret; | |
1925 | struct lttng_event_context context; | |
1926 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
1927 | ||
1928 | assert(handle); | |
1929 | assert(channel_name); | |
1930 | ||
1931 | if (!context_child_node) { | |
1932 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1933 | goto end; | |
1934 | } | |
1935 | ||
1936 | memset(&context, 0, sizeof(context)); | |
1937 | ||
1938 | if (!strcmp((const char *) context_child_node->name, | |
1939 | config_element_type)) { | |
1940 | /* type */ | |
1941 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
1942 | if (!content) { | |
1943 | ret = -LTTNG_ERR_NOMEM; | |
1944 | goto end; | |
1945 | } | |
1946 | ||
1947 | ret = get_context_type(content); | |
1948 | free(content); | |
1949 | if (ret < 0) { | |
1950 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1951 | goto end; | |
1952 | } | |
1953 | ||
1954 | context.ctx = ret; | |
1955 | } else { | |
1956 | xmlNodePtr perf_attr_node; | |
1957 | ||
1958 | /* perf */ | |
1959 | context.ctx = LTTNG_EVENT_CONTEXT_PERF_COUNTER; | |
1960 | for (perf_attr_node = xmlFirstElementChild(context_child_node); | |
1961 | perf_attr_node; perf_attr_node = | |
1962 | xmlNextElementSibling(perf_attr_node)) { | |
1963 | if (!strcmp((const char *) perf_attr_node->name, | |
1964 | config_element_type)) { | |
1965 | xmlChar *content; | |
1966 | uint64_t type = 0; | |
1967 | ||
1968 | /* type */ | |
1969 | content = xmlNodeGetContent(perf_attr_node); | |
1970 | if (!content) { | |
1971 | ret = -LTTNG_ERR_NOMEM; | |
1972 | goto end; | |
1973 | } | |
1974 | ||
1975 | ret = parse_uint(content, &type); | |
1976 | free(content); | |
1977 | if (ret) { | |
1978 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1979 | goto end; | |
1980 | } | |
1981 | ||
1982 | if (type > UINT32_MAX) { | |
1983 | WARN("perf context type out of range."); | |
1984 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1985 | goto end; | |
1986 | } | |
1987 | ||
1988 | context.u.perf_counter.type = type; | |
1989 | } else if (!strcmp((const char *) perf_attr_node->name, | |
1990 | config_element_config)) { | |
1991 | xmlChar *content; | |
1992 | uint64_t config = 0; | |
1993 | ||
1994 | /* config */ | |
1995 | content = xmlNodeGetContent(perf_attr_node); | |
1996 | if (!content) { | |
1997 | ret = -LTTNG_ERR_NOMEM; | |
1998 | goto end; | |
1999 | } | |
2000 | ||
2001 | ret = parse_uint(content, &config); | |
2002 | free(content); | |
2003 | if (ret) { | |
2004 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2005 | goto end; | |
2006 | } | |
2007 | ||
2008 | context.u.perf_counter.config = config; | |
2009 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2010 | config_element_name)) { | |
2011 | xmlChar *content; | |
2012 | size_t name_len; | |
2013 | ||
2014 | /* name */ | |
2015 | content = xmlNodeGetContent(perf_attr_node); | |
2016 | if (!content) { | |
2017 | ret = -LTTNG_ERR_NOMEM; | |
2018 | goto end; | |
2019 | } | |
2020 | ||
2021 | name_len = strlen((char *) content); | |
2022 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2023 | WARN("perf context name too long."); | |
2024 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2025 | free(content); | |
2026 | goto end; | |
2027 | } | |
2028 | ||
2029 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2030 | name_len); | |
2031 | free(content); | |
2032 | } | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
2037 | end: | |
2038 | return ret; | |
2039 | } | |
2040 | ||
2041 | static | |
2042 | int process_contexts_node(xmlNodePtr contexts_node, | |
2043 | struct lttng_handle *handle, const char *channel_name) | |
2044 | { | |
2045 | int ret = 0; | |
2046 | xmlNodePtr context_node; | |
2047 | ||
2048 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2049 | context_node = xmlNextElementSibling(context_node)) { | |
2050 | ret = process_context_node(context_node, handle, channel_name); | |
2051 | if (ret) { | |
2052 | goto end; | |
2053 | } | |
2054 | } | |
2055 | end: | |
2056 | return ret; | |
2057 | } | |
2058 | ||
2059 | static | |
2060 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2061 | { | |
2062 | int ret; | |
2063 | struct lttng_domain domain = { 0 }; | |
2064 | struct lttng_handle *handle = NULL; | |
2065 | xmlNodePtr channels_node = NULL; | |
2066 | xmlNodePtr node; | |
2067 | ||
2068 | assert(session_name); | |
2069 | ||
2070 | ret = init_domain(domain_node, &domain); | |
2071 | if (ret) { | |
2072 | goto end; | |
2073 | } | |
2074 | ||
2075 | handle = lttng_create_handle(session_name, &domain); | |
2076 | if (!handle) { | |
2077 | ret = -LTTNG_ERR_NOMEM; | |
2078 | goto end; | |
2079 | } | |
2080 | ||
2081 | /* get the channels node */ | |
2082 | for (node = xmlFirstElementChild(domain_node); node; | |
2083 | node = xmlNextElementSibling(node)) { | |
2084 | if (!strcmp((const char *) node->name, | |
2085 | config_element_channels)) { | |
2086 | channels_node = node; | |
2087 | break; | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | if (!channels_node) { | |
2092 | goto end; | |
2093 | } | |
2094 | ||
2095 | /* create all channels */ | |
2096 | for (node = xmlFirstElementChild(channels_node); node; | |
2097 | node = xmlNextElementSibling(node)) { | |
2098 | struct lttng_channel channel; | |
2099 | xmlNodePtr contexts_node = NULL; | |
2100 | xmlNodePtr events_node = NULL; | |
2101 | xmlNodePtr channel_attr_node; | |
2102 | ||
2103 | memset(&channel, 0, sizeof(channel)); | |
2104 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2105 | ||
2106 | for (channel_attr_node = xmlFirstElementChild(node); | |
2107 | channel_attr_node; channel_attr_node = | |
2108 | xmlNextElementSibling(channel_attr_node)) { | |
2109 | ret = process_channel_attr_node(channel_attr_node, | |
2110 | &channel, &contexts_node, &events_node); | |
2111 | if (ret) { | |
2112 | goto end; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | ret = lttng_enable_channel(handle, &channel); | |
2117 | if (ret < 0) { | |
2118 | goto end; | |
2119 | } | |
2120 | ||
2121 | ret = process_events_node(events_node, handle, channel.name); | |
2122 | if (ret) { | |
2123 | goto end; | |
2124 | } | |
2125 | ||
2126 | ret = process_contexts_node(contexts_node, handle, | |
2127 | channel.name); | |
2128 | if (ret) { | |
2129 | goto end; | |
2130 | } | |
2131 | } | |
2132 | end: | |
2133 | lttng_destroy_handle(handle); | |
2134 | return ret; | |
2135 | } | |
2136 | ||
2137 | static | |
2138 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2139 | int override) | |
2140 | { | |
2141 | int ret, started = -1, snapshot_mode = -1; | |
2142 | uint64_t live_timer_interval = UINT64_MAX; | |
2143 | char *name = NULL; | |
2144 | xmlNodePtr domains_node = NULL; | |
2145 | xmlNodePtr output_node = NULL; | |
2146 | xmlNodePtr node; | |
2147 | struct lttng_domain *kernel_domain = NULL; | |
2148 | struct lttng_domain *ust_domain = NULL; | |
2149 | struct lttng_domain *jul_domain = NULL; | |
2150 | ||
2151 | for (node = xmlFirstElementChild(session_node); node; | |
2152 | node = xmlNextElementSibling(node)) { | |
2153 | if (!name && !strcmp((const char *) node->name, | |
2154 | config_element_name)) { | |
2155 | /* name */ | |
2156 | xmlChar *node_content = xmlNodeGetContent(node); | |
2157 | if (!node_content) { | |
2158 | ret = -LTTNG_ERR_NOMEM; | |
d6457b51 | 2159 | goto error; |
dcf266c0 JG |
2160 | } |
2161 | ||
2162 | name = (char *) node_content; | |
2163 | } else if (!domains_node && !strcmp((const char *) node->name, | |
2164 | config_element_domains)) { | |
2165 | /* domains */ | |
2166 | domains_node = node; | |
2167 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2168 | config_element_started)) { | |
2169 | /* started */ | |
2170 | xmlChar *node_content = xmlNodeGetContent(node); | |
2171 | if (!node_content) { | |
2172 | ret = -LTTNG_ERR_NOMEM; | |
d6457b51 | 2173 | goto error; |
dcf266c0 JG |
2174 | } |
2175 | ||
2176 | ret = parse_bool(node_content, &started); | |
2177 | free(node_content); | |
2178 | if (ret) { | |
2179 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
d6457b51 | 2180 | goto error; |
dcf266c0 JG |
2181 | } |
2182 | } else if (!output_node && !strcmp((const char *) node->name, | |
2183 | config_element_output)) { | |
2184 | /* output */ | |
2185 | output_node = node; | |
2186 | } else { | |
2187 | /* attributes, snapshot_mode or live_timer_interval */ | |
2188 | xmlNodePtr attributes_child = | |
2189 | xmlFirstElementChild(node); | |
2190 | ||
2191 | if (!strcmp((const char *) attributes_child->name, | |
2192 | config_element_snapshot_mode)) { | |
2193 | /* snapshot_mode */ | |
2194 | xmlChar *snapshot_mode_content = | |
2195 | xmlNodeGetContent(attributes_child); | |
2196 | if (!snapshot_mode_content) { | |
2197 | ret = -LTTNG_ERR_NOMEM; | |
d6457b51 | 2198 | goto error; |
dcf266c0 JG |
2199 | } |
2200 | ||
2201 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2202 | free(snapshot_mode_content); | |
2203 | if (ret) { | |
2204 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
d6457b51 | 2205 | goto error; |
dcf266c0 JG |
2206 | } |
2207 | } else { | |
2208 | /* live_timer_interval */ | |
2209 | xmlChar *timer_interval_content = | |
2210 | xmlNodeGetContent(attributes_child); | |
2211 | if (!timer_interval_content) { | |
2212 | ret = -LTTNG_ERR_NOMEM; | |
d6457b51 | 2213 | goto error; |
dcf266c0 JG |
2214 | } |
2215 | ||
2216 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2217 | free(timer_interval_content); | |
2218 | if (ret) { | |
2219 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
d6457b51 | 2220 | goto error; |
dcf266c0 JG |
2221 | } |
2222 | } | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | if (!name) { | |
2227 | /* Mandatory attribute, as defined in the session XSD */ | |
2228 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
d6457b51 | 2229 | goto error; |
dcf266c0 JG |
2230 | } |
2231 | ||
2232 | if (session_name && strcmp(name, session_name)) { | |
2233 | /* This is not the session we are looking for */ | |
d6457b51 DG |
2234 | ret = -LTTNG_ERR_NO_SESSION; |
2235 | goto error; | |
dcf266c0 JG |
2236 | } |
2237 | ||
2238 | /* Init domains to create the session handles */ | |
2239 | for (node = xmlFirstElementChild(domains_node); node; | |
2240 | node = xmlNextElementSibling(node)) { | |
2241 | struct lttng_domain *domain; | |
2242 | ||
2243 | domain = zmalloc(sizeof(*domain)); | |
2244 | if (!domain) { | |
2245 | ret = -LTTNG_ERR_NOMEM; | |
d6457b51 | 2246 | goto error; |
dcf266c0 JG |
2247 | } |
2248 | ||
2249 | ret = init_domain(node, domain); | |
2250 | if (ret) { | |
2251 | goto domain_init_error; | |
2252 | } | |
2253 | ||
2254 | switch (domain->type) { | |
2255 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2256 | if (kernel_domain) { |
2257 | /* Same domain seen twice, invalid! */ | |
2258 | goto domain_init_error; | |
2259 | } | |
dcf266c0 JG |
2260 | kernel_domain = domain; |
2261 | break; | |
2262 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2263 | if (ust_domain) { |
2264 | /* Same domain seen twice, invalid! */ | |
2265 | goto domain_init_error; | |
2266 | } | |
dcf266c0 JG |
2267 | ust_domain = domain; |
2268 | break; | |
2269 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2270 | if (jul_domain) { |
2271 | /* Same domain seen twice, invalid! */ | |
2272 | goto domain_init_error; | |
2273 | } | |
dcf266c0 JG |
2274 | jul_domain = domain; |
2275 | break; | |
2276 | default: | |
2277 | WARN("Invalid domain type"); | |
2278 | goto domain_init_error; | |
2279 | } | |
2280 | continue; | |
2281 | domain_init_error: | |
2282 | free(domain); | |
2283 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
d6457b51 | 2284 | goto error; |
dcf266c0 JG |
2285 | } |
2286 | ||
2287 | if (override) { | |
2288 | /* Destroy session if it exists */ | |
2289 | ret = lttng_destroy_session(name); | |
2290 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { | |
2291 | ERR("Failed to destroy existing session."); | |
d6457b51 | 2292 | goto error; |
dcf266c0 JG |
2293 | } |
2294 | } | |
2295 | ||
2296 | /* Create session type depending on output type */ | |
2297 | if (snapshot_mode && snapshot_mode != -1) { | |
2298 | ret = create_snapshot_session(name, output_node); | |
2299 | } else if (live_timer_interval && | |
2300 | live_timer_interval != UINT64_MAX) { | |
2301 | ret = create_session(name, kernel_domain, ust_domain, jul_domain, | |
2302 | output_node, live_timer_interval); | |
2303 | } else { | |
2304 | /* regular session */ | |
2305 | ret = create_session(name, kernel_domain, ust_domain, jul_domain, | |
2306 | output_node, UINT64_MAX); | |
2307 | } | |
dcf266c0 | 2308 | if (ret) { |
d6457b51 | 2309 | goto error; |
dcf266c0 JG |
2310 | } |
2311 | ||
2312 | for (node = xmlFirstElementChild(domains_node); node; | |
2313 | node = xmlNextElementSibling(node)) { | |
2314 | ret = process_domain_node(node, name); | |
2315 | if (ret) { | |
2316 | goto end; | |
2317 | } | |
2318 | } | |
2319 | ||
2320 | if (started) { | |
2321 | ret = lttng_start_tracing(name); | |
2322 | if (ret) { | |
2323 | goto end; | |
2324 | } | |
2325 | } | |
d6457b51 | 2326 | |
dcf266c0 | 2327 | end: |
b2579dc1 JG |
2328 | if (ret < 0) { |
2329 | ERR("Failed to load session %s: %s", name, lttng_strerror(ret)); | |
2330 | lttng_destroy_session(name); | |
2331 | } | |
2332 | ||
d6457b51 | 2333 | error: |
dcf266c0 JG |
2334 | free(kernel_domain); |
2335 | free(ust_domain); | |
2336 | free(jul_domain); | |
2337 | free(name); | |
2338 | return ret; | |
2339 | } | |
2340 | ||
2341 | static | |
2342 | int load_session_from_file(const char *path, const char *session_name, | |
2343 | struct session_config_validation_ctx *validation_ctx, int override) | |
2344 | { | |
2345 | int ret, session_found = !session_name; | |
2346 | xmlDocPtr doc = NULL; | |
2347 | xmlNodePtr sessions_node; | |
2348 | xmlNodePtr session_node; | |
2349 | struct stat sb; | |
2350 | ||
2351 | assert(path); | |
2352 | assert(validation_ctx); | |
2353 | ||
2354 | ret = stat(path, &sb); | |
2355 | if (ret) { | |
2356 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | doc = xmlParseFile(path); | |
2361 | if (!doc) { | |
2362 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2363 | goto end; | |
2364 | } | |
2365 | ||
2366 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2367 | if (ret) { | |
2368 | ERR("Session configuration file validation failed"); | |
2369 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2370 | goto end; | |
2371 | } | |
2372 | ||
2373 | sessions_node = xmlDocGetRootElement(doc); | |
2374 | if (!sessions_node) { | |
2375 | goto end; | |
2376 | } | |
2377 | ||
2378 | for (session_node = xmlFirstElementChild(sessions_node); | |
2379 | session_node; session_node = | |
2380 | xmlNextElementSibling(session_node)) { | |
2381 | ret = process_session_node(session_node, | |
2382 | session_name, override); | |
2383 | if (session_name && ret == 0) { | |
2384 | /* Target session found and loaded */ | |
2385 | session_found = 1; | |
2386 | break; | |
2387 | } | |
2388 | } | |
2389 | end: | |
2390 | xmlFreeDoc(doc); | |
2391 | if (!ret) { | |
a96bc65d | 2392 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2393 | } |
2394 | return ret; | |
2395 | } | |
2396 | ||
2397 | static | |
2398 | int load_session_from_path(const char *path, const char *session_name, | |
2399 | struct session_config_validation_ctx *validation_ctx, int override) | |
2400 | { | |
2401 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2402 | DIR *directory = NULL; |
2403 | ||
2404 | assert(path); | |
2405 | assert(validation_ctx); | |
2406 | ||
4af16958 DG |
2407 | directory = opendir(path); |
2408 | if (!directory) { | |
11143783 DG |
2409 | switch (errno) { |
2410 | case ENOTDIR: | |
0f0a81b5 DG |
2411 | /* Try the file loading. */ |
2412 | break; | |
11143783 DG |
2413 | case ENOENT: |
2414 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2415 | goto end; | |
2416 | default: | |
0f0a81b5 DG |
2417 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2418 | goto end; | |
4af16958 | 2419 | } |
dcf266c0 | 2420 | } |
4af16958 | 2421 | if (directory) { |
dcf266c0 JG |
2422 | struct dirent *entry; |
2423 | struct dirent *result; | |
2424 | char *file_path = NULL; | |
2425 | size_t path_len = strlen(path); | |
2426 | ||
2427 | if (path_len >= PATH_MAX) { | |
2428 | ret = -LTTNG_ERR_INVALID; | |
2429 | goto end; | |
2430 | } | |
2431 | ||
2432 | entry = zmalloc(sizeof(*entry)); | |
2433 | if (!entry) { | |
2434 | ret = -LTTNG_ERR_NOMEM; | |
2435 | goto end; | |
2436 | } | |
2437 | ||
dcf266c0 JG |
2438 | file_path = zmalloc(PATH_MAX); |
2439 | if (!file_path) { | |
2440 | ret = -LTTNG_ERR_NOMEM; | |
2441 | free(entry); | |
2442 | goto end; | |
2443 | } | |
2444 | ||
2445 | strncpy(file_path, path, path_len); | |
2446 | if (file_path[path_len - 1] != '/') { | |
2447 | file_path[path_len++] = '/'; | |
2448 | } | |
2449 | ||
4af16958 | 2450 | ret = 0; |
dcf266c0 JG |
2451 | /* Search for *.lttng files */ |
2452 | while (!readdir_r(directory, entry, &result) && result) { | |
2453 | size_t file_name_len = strlen(result->d_name); | |
2454 | ||
2455 | if (file_name_len <= | |
2456 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2457 | continue; | |
2458 | } | |
2459 | ||
431f702e | 2460 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2461 | continue; |
2462 | } | |
2463 | ||
2464 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2465 | result->d_name + file_name_len - sizeof( | |
2466 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2467 | continue; | |
2468 | } | |
2469 | ||
2470 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2471 | file_path[path_len + file_name_len] = '\0'; | |
2472 | ||
2473 | ret = load_session_from_file(file_path, session_name, | |
2474 | validation_ctx, override); | |
2475 | if (session_name && !ret) { | |
2476 | session_found = 1; | |
2477 | break; | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | free(entry); | |
2482 | free(file_path); | |
2483 | } else { | |
2484 | ret = load_session_from_file(path, session_name, | |
2485 | validation_ctx, override); | |
2486 | if (ret) { | |
2487 | goto end; | |
2488 | } else { | |
2489 | session_found = 1; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | end: | |
2494 | if (directory) { | |
2495 | if (closedir(directory)) { | |
2496 | PERROR("closedir"); | |
2497 | } | |
2498 | } | |
2499 | ||
2500 | if (!session_found) { | |
a96bc65d | 2501 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2502 | } |
2503 | ||
2504 | return ret; | |
2505 | } | |
2506 | ||
13b5639d DG |
2507 | /* |
2508 | * Validate that the given path's credentials and the current process have the | |
2509 | * same UID. If so, return 0 else return 1 if it does NOT match. | |
2510 | */ | |
2511 | static int validate_path_creds(const char *path) | |
2512 | { | |
2513 | int ret, uid = getuid(); | |
2514 | struct stat buf; | |
2515 | ||
2516 | assert(path); | |
2517 | ||
2518 | if (uid != 0) { | |
2519 | goto valid; | |
2520 | } | |
2521 | ||
2522 | ret = stat(path, &buf); | |
2523 | if (ret < 0) { | |
2524 | if (errno != ENOENT) { | |
2525 | PERROR("stat"); | |
2526 | } | |
2527 | ret = -LTTNG_ERR_INVALID; | |
2528 | goto valid; | |
2529 | } | |
2530 | ||
2531 | if (buf.st_uid != uid) { | |
2532 | goto invalid; | |
2533 | } | |
2534 | ||
2535 | valid: | |
2536 | return 0; | |
2537 | invalid: | |
2538 | return 1; | |
2539 | } | |
2540 | ||
dcf266c0 JG |
2541 | LTTNG_HIDDEN |
2542 | int config_load_session(const char *path, const char *session_name, | |
13b5639d | 2543 | int override, unsigned int autoload) |
dcf266c0 JG |
2544 | { |
2545 | int ret; | |
2546 | struct session_config_validation_ctx validation_ctx = { 0 }; | |
2547 | ||
2548 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2549 | if (ret) { | |
2550 | goto end; | |
2551 | } | |
2552 | ||
2553 | if (!path) { | |
13b5639d DG |
2554 | char *home_path; |
2555 | const char *sys_path; | |
2556 | ||
2557 | /* | |
2558 | * Try system session configuration path. Ignore error here so we can | |
2559 | * continue loading the home sessions. The above call should print an | |
2560 | * error to inform the user. | |
2561 | */ | |
2562 | if (autoload) { | |
2563 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2564 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
2565 | } else { | |
2566 | sys_path = DEFAULT_SESSION_HOME_CONFIGPATH; | |
2567 | } | |
2568 | ||
2569 | ret = validate_path_creds(sys_path); | |
2570 | if (!ret && autoload) { | |
2571 | (void) load_session_from_path(sys_path, session_name, | |
2572 | &validation_ctx, override); | |
2573 | } | |
2574 | ||
dcf266c0 | 2575 | /* Try home path */ |
13b5639d | 2576 | home_path = utils_get_home_dir(); |
dcf266c0 | 2577 | if (home_path) { |
13b5639d | 2578 | char path[PATH_MAX]; |
dcf266c0 | 2579 | |
13b5639d DG |
2580 | if (autoload) { |
2581 | ret = snprintf(path, sizeof(path), | |
2582 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2583 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
2584 | } else { | |
2585 | ret = snprintf(path, sizeof(path), | |
2586 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
2587 | } | |
dcf266c0 JG |
2588 | if (ret < 0) { |
2589 | goto end; | |
2590 | } | |
2591 | ||
13b5639d DG |
2592 | ret = validate_path_creds(path); |
2593 | if (ret && autoload) { | |
2594 | ret = 0; | |
2595 | goto end; | |
2596 | } | |
2597 | ||
883d970a | 2598 | ret = load_session_from_path(path, session_name, |
e4b5eb8a | 2599 | &validation_ctx, override); |
5a8f54da JG |
2600 | if (!ret || (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { |
2601 | /* Session found or an error occured */ | |
dcf266c0 JG |
2602 | goto end; |
2603 | } | |
dcf266c0 JG |
2604 | } |
2605 | } else { | |
2606 | ret = access(path, F_OK); | |
2607 | if (ret < 0) { | |
2608 | PERROR("access"); | |
2609 | switch (errno) { | |
2610 | case ENOENT: | |
2611 | ret = -LTTNG_ERR_INVALID; | |
2612 | WARN("Session configuration path does not exist."); | |
2613 | break; | |
2614 | case EACCES: | |
2615 | ret = -LTTNG_ERR_EPERM; | |
2616 | break; | |
2617 | default: | |
2618 | ret = -LTTNG_ERR_UNK; | |
2619 | break; | |
2620 | } | |
2621 | goto end; | |
2622 | } | |
2623 | ||
2624 | ret = load_session_from_path(path, session_name, | |
2625 | &validation_ctx, override); | |
2626 | } | |
2627 | end: | |
2628 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2629 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2630 | /* | |
2631 | * Don't report an error if no sessions are found when called | |
2632 | * without a session_name or a search path. | |
2633 | */ | |
2634 | ret = 0; | |
2635 | } | |
dcf266c0 JG |
2636 | return ret; |
2637 | } |