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