Commit | Line | Data |
---|---|---|
1501a7f3 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
1501a7f3 | 19 | #include <assert.h> |
1501a7f3 | 20 | #include <ctype.h> |
1501a7f3 JG |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
36f2332b | 24 | #include <inttypes.h> |
dcf266c0 JG |
25 | #include <dirent.h> |
26 | #include <unistd.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/stat.h> | |
1501a7f3 JG |
29 | |
30 | #include <common/defaults.h> | |
31 | #include <common/error.h> | |
32 | #include <common/macros.h> | |
33 | #include <common/utils.h> | |
e8fa9fb0 | 34 | #include <common/compat/getenv.h> |
fb198a11 JG |
35 | #include <lttng/lttng-error.h> |
36 | #include <libxml/parser.h> | |
37 | #include <libxml/valid.h> | |
38 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
39 | #include <libxml/tree.h> |
40 | #include <lttng/lttng.h> | |
41 | #include <lttng/snapshot.h> | |
1501a7f3 | 42 | |
f40ef1d5 | 43 | #include "session-config.h" |
36f2332b | 44 | #include "config-internal.h" |
1501a7f3 JG |
45 | |
46 | struct handler_filter_args { | |
47 | const char* section; | |
48 | config_entry_handler_cb handler; | |
49 | void *user_data; | |
50 | }; | |
51 | ||
dcf266c0 JG |
52 | struct session_config_validation_ctx { |
53 | xmlSchemaParserCtxtPtr parser_ctx; | |
54 | xmlSchemaPtr schema; | |
55 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
56 | }; | |
57 | ||
1501a7f3 JG |
58 | const char * const config_str_yes = "yes"; |
59 | const char * const config_str_true = "true"; | |
60 | const char * const config_str_on = "on"; | |
61 | const char * const config_str_no = "no"; | |
62 | const char * const config_str_false = "false"; | |
63 | const char * const config_str_off = "off"; | |
36f2332b | 64 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 65 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
66 | const char * const config_xml_indent_string = "\t"; |
67 | const char * const config_xml_true = "true"; | |
68 | const char * const config_xml_false = "false"; | |
1501a7f3 | 69 | |
fb198a11 JG |
70 | const char * const config_element_channel = "channel"; |
71 | const char * const config_element_channels = "channels"; | |
72 | const char * const config_element_domain = "domain"; | |
73 | const char * const config_element_domains = "domains"; | |
74 | const char * const config_element_event = "event"; | |
75 | const char * const config_element_events = "events"; | |
76 | const char * const config_element_context = "context"; | |
77 | const char * const config_element_contexts = "contexts"; | |
78 | const char * const config_element_attributes = "attributes"; | |
79 | const char * const config_element_exclusion = "exclusion"; | |
80 | const char * const config_element_exclusions = "exclusions"; | |
81 | const char * const config_element_function_attributes = "function_attributes"; | |
82 | const char * const config_element_probe_attributes = "probe_attributes"; | |
83 | const char * const config_element_symbol_name = "symbol_name"; | |
84 | const char * const config_element_address = "address"; | |
85 | const char * const config_element_offset = "offset"; | |
86 | const char * const config_element_name = "name"; | |
87 | const char * const config_element_enabled = "enabled"; | |
88 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
89 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
90 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
91 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
92 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
93 | const char * const config_element_output = "output"; | |
94 | const char * const config_element_output_type = "output_type"; | |
95 | const char * const config_element_tracefile_size = "tracefile_size"; | |
96 | const char * const config_element_tracefile_count = "tracefile_count"; | |
97 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
98 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
99 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
100 | const char * const config_element_type = "type"; |
101 | const char * const config_element_buffer_type = "buffer_type"; | |
102 | const char * const config_element_session = "session"; | |
103 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
104 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
105 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
106 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
107 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
108 | const char * const config_element_config = "config"; |
109 | const char * const config_element_started = "started"; | |
110 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
111 | const char * const config_element_loglevel = "loglevel"; | |
112 | const char * const config_element_loglevel_type = "loglevel_type"; | |
113 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 114 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
115 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
116 | const char * const config_element_consumer_output = "consumer_output"; | |
117 | const char * const config_element_destination = "destination"; | |
118 | const char * const config_element_path = "path"; | |
119 | const char * const config_element_net_output = "net_output"; | |
120 | const char * const config_element_control_uri = "control_uri"; | |
121 | const char * const config_element_data_uri = "data_uri"; | |
122 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
123 | const char * const config_element_pid = "pid"; |
124 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 125 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
126 | const char * const config_element_pid_tracker = "pid_tracker"; |
127 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
128 | const char * const config_element_targets = "targets"; |
129 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 JG |
130 | |
131 | const char * const config_domain_type_kernel = "KERNEL"; | |
132 | const char * const config_domain_type_ust = "UST"; | |
133 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 134 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 135 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
136 | |
137 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
138 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
139 | const char * const config_buffer_type_global = "GLOBAL"; | |
140 | ||
141 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
142 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
143 | ||
144 | const char * const config_output_type_splice = "SPLICE"; | |
145 | const char * const config_output_type_mmap = "MMAP"; | |
146 | ||
147 | const char * const config_loglevel_type_all = "ALL"; | |
148 | const char * const config_loglevel_type_range = "RANGE"; | |
149 | const char * const config_loglevel_type_single = "SINGLE"; | |
150 | ||
151 | const char * const config_event_type_all = "ALL"; | |
152 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
153 | const char * const config_event_type_probe = "PROBE"; | |
154 | const char * const config_event_type_function = "FUNCTION"; | |
155 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
156 | const char * const config_event_type_noop = "NOOP"; | |
157 | const char * const config_event_type_syscall = "SYSCALL"; | |
158 | const char * const config_event_type_kprobe = "KPROBE"; | |
159 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
160 | ||
161 | const char * const config_event_context_pid = "PID"; | |
162 | const char * const config_event_context_procname = "PROCNAME"; | |
163 | const char * const config_event_context_prio = "PRIO"; | |
164 | const char * const config_event_context_nice = "NICE"; | |
165 | const char * const config_event_context_vpid = "VPID"; | |
166 | const char * const config_event_context_tid = "TID"; | |
167 | const char * const config_event_context_vtid = "VTID"; | |
168 | const char * const config_event_context_ppid = "PPID"; | |
169 | const char * const config_event_context_vppid = "VPPID"; | |
170 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
171 | const char * const config_event_context_hostname = "HOSTNAME"; | |
172 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 173 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
174 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
175 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
176 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
177 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
178 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
fb198a11 | 179 | |
dcf266c0 JG |
180 | struct consumer_output { |
181 | int enabled; | |
182 | char *path; | |
183 | char *control_uri; | |
184 | char *data_uri; | |
185 | }; | |
186 | ||
1501a7f3 JG |
187 | static int config_entry_handler_filter(struct handler_filter_args *args, |
188 | const char *section, const char *name, const char *value) | |
189 | { | |
190 | int ret = 0; | |
191 | struct config_entry entry = { section, name, value }; | |
192 | ||
193 | assert(args); | |
194 | ||
195 | if (!section || !name || !value) { | |
196 | ret = -EIO; | |
197 | goto end; | |
198 | } | |
199 | ||
200 | if (args->section) { | |
201 | if (strcmp(args->section, section)) { | |
202 | goto end; | |
203 | } | |
204 | } | |
205 | ||
206 | ret = args->handler(&entry, args->user_data); | |
207 | end: | |
208 | return ret; | |
209 | } | |
210 | ||
211 | LTTNG_HIDDEN | |
212 | int config_get_section_entries(const char *override_path, const char *section, | |
213 | config_entry_handler_cb handler, void *user_data) | |
214 | { | |
215 | int ret = 0; | |
7ab02a27 | 216 | char *path; |
1501a7f3 JG |
217 | FILE *config_file = NULL; |
218 | struct handler_filter_args filter = { section, handler, user_data }; | |
219 | ||
7ab02a27 DG |
220 | /* First, try system-wide conf. file. */ |
221 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
222 | ||
223 | config_file = fopen(path, "r"); | |
224 | if (config_file) { | |
225 | DBG("Loading daemon conf file at %s", path); | |
226 | /* | |
227 | * Return value is not very important here since error or not, we | |
228 | * continue and try the next possible conf. file. | |
229 | */ | |
230 | (void) ini_parse_file(config_file, | |
231 | (ini_entry_handler) config_entry_handler_filter, | |
232 | (void *) &filter); | |
233 | fclose(config_file); | |
234 | } | |
235 | ||
236 | /* Second is the user local configuration. */ | |
237 | path = utils_get_home_dir(); | |
238 | if (path) { | |
239 | char fullpath[PATH_MAX]; | |
240 | ||
241 | ret = snprintf(fullpath, sizeof(fullpath), | |
242 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
243 | if (ret < 0) { | |
244 | PERROR("snprintf user conf. path"); | |
245 | goto error; | |
246 | } | |
247 | ||
248 | config_file = fopen(fullpath, "r"); | |
249 | if (config_file) { | |
250 | DBG("Loading daemon user conf file at %s", path); | |
251 | /* | |
252 | * Return value is not very important here since error or not, we | |
253 | * continue and try the next possible conf. file. | |
254 | */ | |
255 | (void) ini_parse_file(config_file, | |
256 | (ini_entry_handler) config_entry_handler_filter, | |
257 | (void *) &filter); | |
258 | fclose(config_file); | |
259 | } | |
260 | } | |
261 | ||
262 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
263 | if (override_path) { |
264 | config_file = fopen(override_path, "r"); | |
265 | if (config_file) { | |
7ab02a27 DG |
266 | DBG("Loading daemon command line conf file at %s", override_path); |
267 | (void) ini_parse_file(config_file, | |
268 | (ini_entry_handler) config_entry_handler_filter, | |
269 | (void *) &filter); | |
270 | fclose(config_file); | |
1501a7f3 JG |
271 | } else { |
272 | ERR("Failed to open daemon configuration file at %s", | |
273 | override_path); | |
274 | ret = -ENOENT; | |
7ab02a27 | 275 | goto error; |
1501a7f3 JG |
276 | } |
277 | } | |
278 | ||
7ab02a27 DG |
279 | /* Everything went well. */ |
280 | ret = 0; | |
1501a7f3 | 281 | |
7ab02a27 | 282 | error: |
1501a7f3 JG |
283 | return ret; |
284 | } | |
285 | ||
286 | LTTNG_HIDDEN | |
287 | int config_parse_value(const char *value) | |
288 | { | |
289 | int i, ret = 0; | |
290 | char *endptr, *lower_str; | |
291 | size_t len; | |
292 | unsigned long v; | |
293 | ||
294 | len = strlen(value); | |
295 | if (!len) { | |
296 | ret = -1; | |
297 | goto end; | |
298 | } | |
299 | ||
300 | v = strtoul(value, &endptr, 10); | |
301 | if (endptr != value) { | |
302 | ret = v; | |
303 | goto end; | |
304 | } | |
305 | ||
306 | lower_str = zmalloc(len + 1); | |
307 | if (!lower_str) { | |
308 | PERROR("zmalloc"); | |
309 | ret = -errno; | |
310 | goto end; | |
311 | } | |
312 | ||
313 | for (i = 0; i < len; i++) { | |
314 | lower_str[i] = tolower(value[i]); | |
315 | } | |
316 | ||
317 | if (!strcmp(lower_str, config_str_yes) || | |
318 | !strcmp(lower_str, config_str_true) || | |
319 | !strcmp(lower_str, config_str_on)) { | |
320 | ret = 1; | |
321 | } else if (!strcmp(lower_str, config_str_no) || | |
322 | !strcmp(lower_str, config_str_false) || | |
323 | !strcmp(lower_str, config_str_off)) { | |
324 | ret = 0; | |
325 | } else { | |
326 | ret = -1; | |
327 | } | |
328 | ||
329 | free(lower_str); | |
330 | end: | |
331 | return ret; | |
332 | } | |
36f2332b JG |
333 | |
334 | /* | |
335 | * Returns a xmlChar string which must be released using xmlFree(). | |
336 | */ | |
337 | static xmlChar *encode_string(const char *in_str) | |
338 | { | |
339 | xmlChar *out_str = NULL; | |
340 | xmlCharEncodingHandlerPtr handler; | |
341 | int out_len, ret, in_len; | |
342 | ||
343 | assert(in_str); | |
344 | ||
345 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
346 | if (!handler) { | |
347 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
348 | goto end; | |
349 | } | |
350 | ||
351 | in_len = strlen(in_str); | |
352 | /* | |
f76d886f JG |
353 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
354 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 355 | */ |
f76d886f | 356 | out_len = (in_len * 4) + 1; |
36f2332b JG |
357 | out_str = xmlMalloc(out_len); |
358 | if (!out_str) { | |
359 | goto end; | |
360 | } | |
361 | ||
362 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
363 | if (ret < 0) { | |
364 | xmlFree(out_str); | |
365 | out_str = NULL; | |
366 | goto end; | |
367 | } | |
368 | ||
369 | /* out_len is now the size of out_str */ | |
370 | out_str[out_len] = '\0'; | |
371 | end: | |
372 | return out_str; | |
373 | } | |
374 | ||
375 | LTTNG_HIDDEN | |
705bb62f | 376 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
377 | { |
378 | int ret; | |
379 | struct config_writer *writer; | |
380 | xmlOutputBufferPtr buffer; | |
381 | ||
382 | writer = zmalloc(sizeof(struct config_writer)); | |
383 | if (!writer) { | |
384 | PERROR("zmalloc config_writer_create"); | |
385 | goto end; | |
386 | } | |
387 | ||
388 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
389 | if (!buffer) { | |
390 | goto error_destroy; | |
391 | } | |
392 | ||
393 | writer->writer = xmlNewTextWriter(buffer); | |
394 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
395 | config_xml_encoding, NULL); | |
396 | if (ret < 0) { | |
397 | goto error_destroy; | |
398 | } | |
399 | ||
400 | ret = xmlTextWriterSetIndentString(writer->writer, | |
401 | BAD_CAST config_xml_indent_string); | |
705bb62f | 402 | if (ret) { |
36f2332b JG |
403 | goto error_destroy; |
404 | } | |
405 | ||
705bb62f JRJ |
406 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
407 | if (ret) { | |
36f2332b JG |
408 | goto error_destroy; |
409 | } | |
410 | ||
411 | end: | |
412 | return writer; | |
413 | error_destroy: | |
414 | config_writer_destroy(writer); | |
415 | return NULL; | |
416 | } | |
417 | ||
418 | LTTNG_HIDDEN | |
419 | int config_writer_destroy(struct config_writer *writer) | |
420 | { | |
421 | int ret = 0; | |
422 | ||
423 | if (!writer) { | |
424 | ret = -EINVAL; | |
425 | goto end; | |
426 | } | |
427 | ||
428 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
429 | WARN("Could not close XML document"); | |
430 | ret = -EIO; | |
431 | } | |
432 | ||
433 | if (writer->writer) { | |
434 | xmlFreeTextWriter(writer->writer); | |
435 | } | |
436 | ||
437 | free(writer); | |
438 | end: | |
439 | return ret; | |
440 | } | |
441 | ||
442 | LTTNG_HIDDEN | |
443 | int config_writer_open_element(struct config_writer *writer, | |
444 | const char *element_name) | |
445 | { | |
446 | int ret; | |
447 | xmlChar *encoded_element_name; | |
448 | ||
449 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
450 | ret = -1; | |
451 | goto end; | |
452 | } | |
453 | ||
454 | encoded_element_name = encode_string(element_name); | |
455 | if (!encoded_element_name) { | |
456 | ret = -1; | |
457 | goto end; | |
458 | } | |
459 | ||
460 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
461 | xmlFree(encoded_element_name); | |
462 | end: | |
28676a1d | 463 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
464 | } |
465 | ||
e10b6a1c JG |
466 | LTTNG_HIDDEN |
467 | int config_writer_write_attribute(struct config_writer *writer, | |
468 | const char *name, const char *value) | |
469 | { | |
470 | int ret; | |
471 | xmlChar *encoded_name = NULL; | |
472 | xmlChar *encoded_value = NULL; | |
473 | ||
474 | if (!writer || !writer->writer || !name || !name[0]) { | |
475 | ret = -1; | |
476 | goto end; | |
477 | } | |
478 | ||
479 | encoded_name = encode_string(name); | |
480 | if (!encoded_name) { | |
481 | ret = -1; | |
482 | goto end; | |
483 | } | |
484 | ||
485 | encoded_value = encode_string(value); | |
486 | if (!encoded_value) { | |
487 | ret = -1; | |
488 | goto end; | |
489 | } | |
490 | ||
491 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
492 | encoded_value); | |
493 | end: | |
494 | xmlFree(encoded_name); | |
495 | xmlFree(encoded_value); | |
496 | return ret >= 0 ? 0 : ret; | |
497 | } | |
498 | ||
36f2332b JG |
499 | LTTNG_HIDDEN |
500 | int config_writer_close_element(struct config_writer *writer) | |
501 | { | |
502 | int ret; | |
503 | ||
504 | if (!writer || !writer->writer) { | |
505 | ret = -1; | |
506 | goto end; | |
507 | } | |
508 | ||
509 | ret = xmlTextWriterEndElement(writer->writer); | |
510 | end: | |
28676a1d | 511 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
512 | } |
513 | ||
514 | LTTNG_HIDDEN | |
515 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
516 | const char *element_name, uint64_t value) | |
517 | { | |
518 | int ret; | |
519 | xmlChar *encoded_element_name; | |
520 | ||
521 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
522 | ret = -1; | |
523 | goto end; | |
524 | } | |
525 | ||
526 | encoded_element_name = encode_string(element_name); | |
527 | if (!encoded_element_name) { | |
528 | ret = -1; | |
529 | goto end; | |
530 | } | |
531 | ||
532 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
533 | encoded_element_name, "%" PRIu64, value); | |
534 | xmlFree(encoded_element_name); | |
535 | end: | |
28676a1d | 536 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
537 | } |
538 | ||
539 | LTTNG_HIDDEN | |
540 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
541 | const char *element_name, int64_t value) | |
542 | { | |
543 | int ret; | |
544 | xmlChar *encoded_element_name; | |
545 | ||
546 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
547 | ret = -1; | |
548 | goto end; | |
549 | } | |
550 | ||
551 | encoded_element_name = encode_string(element_name); | |
552 | if (!encoded_element_name) { | |
553 | ret = -1; | |
554 | goto end; | |
555 | } | |
556 | ||
557 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
558 | encoded_element_name, "%" PRIi64, value); | |
559 | xmlFree(encoded_element_name); | |
560 | end: | |
28676a1d | 561 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
562 | } |
563 | ||
564 | LTTNG_HIDDEN | |
565 | int config_writer_write_element_bool(struct config_writer *writer, | |
566 | const char *element_name, int value) | |
567 | { | |
568 | return config_writer_write_element_string(writer, element_name, | |
569 | value ? config_xml_true : config_xml_false); | |
570 | } | |
571 | ||
572 | LTTNG_HIDDEN | |
573 | int config_writer_write_element_string(struct config_writer *writer, | |
574 | const char *element_name, const char *value) | |
575 | { | |
576 | int ret; | |
577 | xmlChar *encoded_element_name = NULL; | |
578 | xmlChar *encoded_value = NULL; | |
579 | ||
580 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
581 | !value) { | |
582 | ret = -1; | |
583 | goto end; | |
584 | } | |
585 | ||
586 | encoded_element_name = encode_string(element_name); | |
587 | if (!encoded_element_name) { | |
588 | ret = -1; | |
589 | goto end; | |
590 | } | |
591 | ||
592 | encoded_value = encode_string(value); | |
593 | if (!encoded_value) { | |
594 | ret = -1; | |
595 | goto end; | |
596 | } | |
597 | ||
598 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 599 | encoded_value); |
36f2332b JG |
600 | end: |
601 | xmlFree(encoded_element_name); | |
602 | xmlFree(encoded_value); | |
28676a1d | 603 | return ret >= 0 ? 0 : ret; |
36f2332b | 604 | } |
dcf266c0 JG |
605 | |
606 | static | |
607 | void xml_error_handler(void *ctx, const char *format, ...) | |
608 | { | |
609 | char *errMsg; | |
610 | va_list args; | |
611 | int ret; | |
612 | ||
613 | va_start(args, format); | |
614 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 615 | va_end(args); |
dcf266c0 JG |
616 | if (ret == -1) { |
617 | ERR("String allocation failed in xml error handler"); | |
618 | return; | |
619 | } | |
dcf266c0 JG |
620 | |
621 | fprintf(stderr, "XML Error: %s", errMsg); | |
622 | free(errMsg); | |
623 | } | |
624 | ||
625 | static | |
626 | void fini_session_config_validation_ctx( | |
627 | struct session_config_validation_ctx *ctx) | |
628 | { | |
629 | if (ctx->parser_ctx) { | |
630 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
631 | } | |
632 | ||
633 | if (ctx->schema) { | |
634 | xmlSchemaFree(ctx->schema); | |
635 | } | |
636 | ||
637 | if (ctx->schema_validation_ctx) { | |
638 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
639 | } | |
640 | ||
641 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
642 | } | |
643 | ||
54e399cb JG |
644 | static |
645 | char *get_session_config_xsd_path() | |
646 | { | |
647 | char *xsd_path; | |
e8fa9fb0 | 648 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
649 | size_t base_path_len; |
650 | size_t max_path_len; | |
651 | ||
652 | if (!base_path) { | |
653 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
654 | } | |
655 | ||
656 | base_path_len = strlen(base_path); | |
657 | max_path_len = base_path_len + | |
658 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
659 | xsd_path = zmalloc(max_path_len); | |
660 | if (!xsd_path) { | |
661 | goto end; | |
662 | } | |
663 | ||
664 | strncpy(xsd_path, base_path, max_path_len); | |
665 | if (xsd_path[base_path_len - 1] != '/') { | |
666 | xsd_path[base_path_len++] = '/'; | |
667 | } | |
668 | ||
669 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
670 | max_path_len - base_path_len); | |
671 | end: | |
672 | return xsd_path; | |
673 | } | |
674 | ||
dcf266c0 JG |
675 | static |
676 | int init_session_config_validation_ctx( | |
677 | struct session_config_validation_ctx *ctx) | |
678 | { | |
679 | int ret; | |
54e399cb JG |
680 | char *xsd_path = get_session_config_xsd_path(); |
681 | ||
682 | if (!xsd_path) { | |
683 | ret = -LTTNG_ERR_NOMEM; | |
684 | goto end; | |
685 | } | |
dcf266c0 | 686 | |
54e399cb | 687 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
688 | if (!ctx->parser_ctx) { |
689 | ERR("XSD parser context creation failed"); | |
690 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
691 | goto end; | |
692 | } | |
693 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
694 | xml_error_handler, NULL); | |
695 | ||
696 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
697 | if (!ctx->schema) { | |
698 | ERR("XSD parsing failed"); | |
699 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
700 | goto end; | |
701 | } | |
702 | ||
703 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
704 | if (!ctx->schema_validation_ctx) { | |
705 | ERR("XSD validation context creation failed"); | |
706 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
707 | goto end; | |
708 | } | |
709 | ||
710 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
711 | xml_error_handler, NULL); | |
712 | ret = 0; | |
713 | ||
714 | end: | |
715 | if (ret) { | |
716 | fini_session_config_validation_ctx(ctx); | |
717 | } | |
718 | ||
54e399cb | 719 | free(xsd_path); |
dcf266c0 JG |
720 | return ret; |
721 | } | |
722 | ||
723 | static | |
724 | int parse_uint(xmlChar *str, uint64_t *val) | |
725 | { | |
726 | int ret; | |
727 | char *endptr; | |
728 | ||
729 | if (!str || !val) { | |
730 | ret = -1; | |
731 | goto end; | |
732 | } | |
733 | ||
734 | *val = strtoull((const char *) str, &endptr, 10); | |
735 | if (!endptr || *endptr) { | |
736 | ret = -1; | |
737 | } else { | |
738 | ret = 0; | |
739 | } | |
740 | ||
741 | end: | |
742 | return ret; | |
743 | } | |
744 | ||
745 | static | |
746 | int parse_int(xmlChar *str, int64_t *val) | |
747 | { | |
748 | int ret; | |
749 | char *endptr; | |
750 | ||
751 | if (!str || !val) { | |
752 | ret = -1; | |
753 | goto end; | |
754 | } | |
755 | ||
756 | *val = strtoll((const char *) str, &endptr, 10); | |
757 | if (!endptr || *endptr) { | |
758 | ret = -1; | |
759 | } else { | |
760 | ret = 0; | |
761 | } | |
762 | ||
763 | end: | |
764 | return ret; | |
765 | } | |
766 | ||
767 | static | |
768 | int parse_bool(xmlChar *str, int *val) | |
769 | { | |
770 | int ret = 0; | |
771 | ||
772 | if (!str || !val) { | |
773 | ret = -1; | |
774 | goto end; | |
775 | } | |
776 | ||
777 | if (!strcmp((const char *) str, config_xml_true)) { | |
778 | *val = 1; | |
779 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
780 | *val = 0; | |
781 | } else { | |
782 | WARN("Invalid boolean value encoutered (%s).", | |
783 | (const char *) str); | |
784 | ret = -1; | |
785 | } | |
786 | end: | |
787 | return ret; | |
788 | } | |
789 | ||
790 | static | |
791 | int get_domain_type(xmlChar *domain) | |
792 | { | |
793 | int ret; | |
794 | ||
795 | if (!domain) { | |
796 | goto error; | |
797 | } | |
798 | ||
799 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
800 | ret = LTTNG_DOMAIN_KERNEL; | |
801 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
802 | ret = LTTNG_DOMAIN_UST; | |
803 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
804 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
805 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
806 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
807 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
808 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
809 | } else { |
810 | goto error; | |
811 | } | |
812 | ||
813 | return ret; | |
814 | error: | |
815 | return -1; | |
816 | } | |
817 | ||
818 | static | |
819 | int get_buffer_type(xmlChar *buffer_type) | |
820 | { | |
821 | int ret; | |
822 | ||
823 | if (!buffer_type) { | |
824 | goto error; | |
825 | } | |
826 | ||
827 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
828 | ret = LTTNG_BUFFER_GLOBAL; | |
829 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
830 | ret = LTTNG_BUFFER_PER_UID; | |
831 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
832 | ret = LTTNG_BUFFER_PER_PID; | |
833 | } else { | |
834 | goto error; | |
835 | } | |
836 | ||
837 | return ret; | |
838 | error: | |
839 | return -1; | |
840 | } | |
841 | ||
842 | static | |
843 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
844 | { | |
845 | int ret; | |
846 | ||
847 | if (!overwrite_mode) { | |
848 | goto error; | |
849 | } | |
850 | ||
851 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
852 | ret = 1; | |
853 | } else if (!strcmp((char *) overwrite_mode, | |
854 | config_overwrite_mode_discard)) { | |
855 | ret = 0; | |
856 | } else { | |
857 | goto error; | |
858 | } | |
859 | ||
860 | return ret; | |
861 | error: | |
862 | return -1; | |
863 | } | |
864 | ||
865 | static | |
866 | int get_output_type(xmlChar *output_type) | |
867 | { | |
868 | int ret; | |
869 | ||
870 | if (!output_type) { | |
871 | goto error; | |
872 | } | |
873 | ||
874 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
875 | ret = LTTNG_EVENT_MMAP; | |
876 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
877 | ret = LTTNG_EVENT_SPLICE; | |
878 | } else { | |
879 | goto error; | |
880 | } | |
881 | ||
882 | return ret; | |
883 | error: | |
884 | return -1; | |
885 | } | |
886 | ||
887 | static | |
888 | int get_event_type(xmlChar *event_type) | |
889 | { | |
890 | int ret; | |
891 | ||
892 | if (!event_type) { | |
893 | goto error; | |
894 | } | |
895 | ||
896 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
897 | ret = LTTNG_EVENT_ALL; | |
898 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
899 | ret = LTTNG_EVENT_TRACEPOINT; | |
900 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
901 | ret = LTTNG_EVENT_PROBE; | |
902 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
903 | ret = LTTNG_EVENT_FUNCTION; | |
904 | } else if (!strcmp((char *) event_type, | |
905 | config_event_type_function_entry)) { | |
906 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
907 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
908 | ret = LTTNG_EVENT_NOOP; | |
909 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
910 | ret = LTTNG_EVENT_SYSCALL; | |
911 | } else { | |
912 | goto error; | |
913 | } | |
914 | ||
915 | return ret; | |
916 | error: | |
917 | return -1; | |
918 | } | |
919 | ||
920 | static | |
921 | int get_loglevel_type(xmlChar *loglevel_type) | |
922 | { | |
923 | int ret; | |
924 | ||
925 | if (!loglevel_type) { | |
926 | goto error; | |
927 | } | |
928 | ||
929 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
930 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
931 | } else if (!strcmp((char *) loglevel_type, | |
932 | config_loglevel_type_range)) { | |
933 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
934 | } else if (!strcmp((char *) loglevel_type, | |
935 | config_loglevel_type_single)) { | |
936 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
937 | } else { | |
938 | goto error; | |
939 | } | |
940 | ||
941 | return ret; | |
942 | error: | |
943 | return -1; | |
944 | } | |
945 | ||
946 | /* | |
947 | * Return the context type or -1 on error. | |
948 | */ | |
949 | static | |
950 | int get_context_type(xmlChar *context_type) | |
951 | { | |
952 | int ret; | |
953 | ||
954 | if (!context_type) { | |
955 | goto error; | |
956 | } | |
957 | ||
958 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
959 | ret = LTTNG_EVENT_CONTEXT_PID; | |
960 | } else if (!strcmp((char *) context_type, | |
961 | config_event_context_procname)) { | |
962 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
963 | } else if (!strcmp((char *) context_type, | |
964 | config_event_context_prio)) { | |
965 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
966 | } else if (!strcmp((char *) context_type, | |
967 | config_event_context_nice)) { | |
968 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
969 | } else if (!strcmp((char *) context_type, | |
970 | config_event_context_vpid)) { | |
971 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
972 | } else if (!strcmp((char *) context_type, | |
973 | config_event_context_tid)) { | |
974 | ret = LTTNG_EVENT_CONTEXT_TID; | |
975 | } else if (!strcmp((char *) context_type, | |
976 | config_event_context_vtid)) { | |
977 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
978 | } else if (!strcmp((char *) context_type, | |
979 | config_event_context_ppid)) { | |
980 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
981 | } else if (!strcmp((char *) context_type, | |
982 | config_event_context_vppid)) { | |
983 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
984 | } else if (!strcmp((char *) context_type, | |
985 | config_event_context_pthread_id)) { | |
986 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
987 | } else if (!strcmp((char *) context_type, | |
988 | config_event_context_hostname)) { | |
989 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
990 | } else if (!strcmp((char *) context_type, | |
991 | config_event_context_ip)) { | |
992 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
993 | } else if (!strcmp((char *) context_type, |
994 | config_event_context_interruptible)) { | |
995 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
996 | } else if (!strcmp((char *) context_type, | |
997 | config_event_context_preemptible)) { | |
998 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
999 | } else if (!strcmp((char *) context_type, | |
1000 | config_event_context_need_reschedule)) { | |
1001 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1002 | } else if (!strcmp((char *) context_type, | |
1003 | config_event_context_migratable)) { | |
1004 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
dcf266c0 JG |
1005 | } else { |
1006 | goto error; | |
1007 | } | |
1008 | ||
1009 | return ret; | |
1010 | error: | |
1011 | return -1; | |
1012 | } | |
1013 | ||
1014 | static | |
1015 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1016 | { | |
1017 | int ret; | |
1018 | xmlNodePtr node; | |
1019 | ||
1020 | for (node = xmlFirstElementChild(domain_node); node; | |
1021 | node = xmlNextElementSibling(node)) { | |
1022 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1023 | /* domain type */ | |
1024 | xmlChar *node_content = xmlNodeGetContent(node); | |
1025 | if (!node_content) { | |
1026 | ret = -LTTNG_ERR_NOMEM; | |
1027 | goto end; | |
1028 | } | |
1029 | ||
1030 | ret = get_domain_type(node_content); | |
1031 | free(node_content); | |
1032 | if (ret < 0) { | |
1033 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1034 | goto end; | |
1035 | } | |
1036 | ||
1037 | domain->type = ret; | |
1038 | } else if (!strcmp((const char *) node->name, | |
1039 | config_element_buffer_type)) { | |
1040 | /* buffer type */ | |
1041 | xmlChar *node_content = xmlNodeGetContent(node); | |
1042 | if (!node_content) { | |
1043 | ret = -LTTNG_ERR_NOMEM; | |
1044 | goto end; | |
1045 | } | |
1046 | ||
1047 | ret = get_buffer_type(node_content); | |
1048 | free(node_content); | |
1049 | if (ret < 0) { | |
1050 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1051 | goto end; | |
1052 | } | |
1053 | ||
1054 | domain->buf_type = ret; | |
1055 | } | |
1056 | } | |
1057 | ret = 0; | |
1058 | end: | |
1059 | return ret; | |
1060 | } | |
1061 | ||
1062 | static | |
1063 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1064 | char **data_uri) | |
1065 | { | |
1066 | xmlNodePtr node; | |
1067 | ||
1068 | for (node = xmlFirstElementChild(net_output_node); node; | |
1069 | node = xmlNextElementSibling(node)) { | |
1070 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1071 | /* control_uri */ | |
1072 | *control_uri = (char *) xmlNodeGetContent(node); | |
1073 | if (!*control_uri) { | |
1074 | break; | |
1075 | } | |
1076 | } else { | |
1077 | /* data_uri */ | |
1078 | *data_uri = (char *) xmlNodeGetContent(node); | |
1079 | if (!*data_uri) { | |
1080 | break; | |
1081 | } | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1086 | } | |
1087 | ||
1088 | static | |
1089 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1090 | struct consumer_output *output) | |
1091 | { | |
1092 | int ret; | |
1093 | xmlNodePtr node; | |
1094 | ||
1095 | assert(output); | |
1096 | ||
1097 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1098 | node = xmlNextElementSibling(node)) { | |
1099 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1100 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1101 | ||
1102 | /* enabled */ | |
1103 | if (!enabled_str) { | |
1104 | ret = -LTTNG_ERR_NOMEM; | |
1105 | goto end; | |
1106 | } | |
1107 | ||
1108 | ret = parse_bool(enabled_str, &output->enabled); | |
1109 | free(enabled_str); | |
1110 | if (ret) { | |
1111 | goto end; | |
1112 | } | |
1113 | } else { | |
1114 | xmlNodePtr output_type_node; | |
1115 | ||
1116 | /* destination */ | |
1117 | output_type_node = xmlFirstElementChild(node); | |
1118 | if (!output_type_node) { | |
1119 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1120 | goto end; | |
1121 | } | |
1122 | ||
1123 | if (!strcmp((const char *) output_type_node->name, | |
1124 | config_element_path)) { | |
1125 | /* path */ | |
1126 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1127 | if (!output->path) { | |
1128 | ret = -LTTNG_ERR_NOMEM; | |
1129 | goto end; | |
1130 | } | |
1131 | } else { | |
1132 | /* net_output */ | |
1133 | ret = get_net_output_uris(output_type_node, | |
1134 | &output->control_uri, &output->data_uri); | |
1135 | if (ret) { | |
1136 | goto end; | |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | ret = 0; | |
1142 | ||
1143 | end: | |
1144 | if (ret) { | |
1145 | free(output->path); | |
1146 | free(output->control_uri); | |
1147 | free(output->data_uri); | |
1148 | memset(output, 0, sizeof(struct consumer_output)); | |
1149 | } | |
1150 | return ret; | |
1151 | } | |
1152 | ||
1153 | static | |
1154 | int create_session_net_output(const char *name, struct lttng_domain *domain, | |
1155 | const char *control_uri, const char *data_uri) | |
1156 | { | |
1157 | int ret; | |
1158 | struct lttng_handle *handle; | |
1159 | const char *uri = NULL; | |
1160 | ||
1161 | assert(name); | |
1162 | assert(domain); | |
1163 | ||
1164 | handle = lttng_create_handle(name, domain); | |
1165 | if (!handle) { | |
1166 | ret = -LTTNG_ERR_NOMEM; | |
1167 | goto end; | |
1168 | } | |
1169 | ||
1170 | if (!control_uri || !data_uri) { | |
1171 | uri = control_uri ? control_uri : data_uri; | |
1172 | control_uri = uri; | |
1173 | data_uri = uri; | |
1174 | } | |
1175 | ||
1176 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1177 | lttng_destroy_handle(handle); | |
1178 | end: | |
1179 | return ret; | |
1180 | } | |
1181 | ||
1182 | static | |
1183 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node) | |
1184 | { | |
1185 | int ret; | |
1186 | xmlNodePtr node = NULL; | |
1187 | xmlNodePtr snapshot_output_list_node; | |
1188 | xmlNodePtr snapshot_output_node; | |
1189 | ||
1190 | assert(session_name); | |
1191 | ||
1192 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1193 | if (ret) { | |
1194 | goto end; | |
1195 | } | |
1196 | ||
1197 | if (!output_node) { | |
1198 | goto end; | |
1199 | } | |
1200 | ||
1201 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1202 | ||
1203 | /* Parse and create snapshot outputs */ | |
1204 | ||
1205 | for (snapshot_output_node = | |
1206 | xmlFirstElementChild(snapshot_output_list_node); | |
1207 | snapshot_output_node; snapshot_output_node = | |
1208 | xmlNextElementSibling(snapshot_output_node)) { | |
1209 | char *name = NULL; | |
1210 | uint64_t max_size = UINT64_MAX; | |
1211 | struct consumer_output output = { 0 }; | |
1212 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1213 | ||
1214 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1215 | node = xmlNextElementSibling(node)) { | |
1216 | if (!strcmp((const char *) node->name, | |
1217 | config_element_name)) { | |
1218 | /* name */ | |
1219 | name = (char *) xmlNodeGetContent(node); | |
1220 | if (!name) { | |
1221 | ret = -LTTNG_ERR_NOMEM; | |
1222 | goto error_snapshot_output; | |
1223 | } | |
1224 | } else if (!strcmp((const char *) node->name, | |
1225 | config_element_max_size)) { | |
1226 | xmlChar *content = xmlNodeGetContent(node); | |
1227 | ||
1228 | /* max_size */ | |
1229 | if (!content) { | |
1230 | ret = -LTTNG_ERR_NOMEM; | |
1231 | goto error_snapshot_output; | |
1232 | } | |
1233 | ret = parse_uint(content, &max_size); | |
1234 | free(content); | |
1235 | if (ret) { | |
1236 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1237 | goto error_snapshot_output; | |
1238 | } | |
1239 | } else { | |
1240 | /* consumer_output */ | |
1241 | ret = process_consumer_output(node, &output); | |
1242 | if (ret) { | |
1243 | goto error_snapshot_output; | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | snapshot_output = lttng_snapshot_output_create(); | |
1249 | if (!snapshot_output) { | |
1250 | ret = -LTTNG_ERR_NOMEM; | |
1251 | goto error_snapshot_output; | |
1252 | } | |
1253 | ||
1254 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1255 | if (ret) { | |
1256 | goto error_snapshot_output; | |
1257 | } | |
1258 | ||
1259 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1260 | if (ret) { | |
1261 | goto error_snapshot_output; | |
1262 | } | |
1263 | ||
1264 | if (output.path) { | |
1265 | ret = lttng_snapshot_output_set_ctrl_url(output.path, | |
1266 | snapshot_output); | |
1267 | if (ret) { | |
1268 | goto error_snapshot_output; | |
1269 | } | |
1270 | } else { | |
1271 | if (output.control_uri) { | |
1272 | ret = lttng_snapshot_output_set_ctrl_url(output.control_uri, | |
1273 | snapshot_output); | |
1274 | if (ret) { | |
1275 | goto error_snapshot_output; | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | if (output.data_uri) { | |
1280 | ret = lttng_snapshot_output_set_data_url(output.data_uri, | |
1281 | snapshot_output); | |
1282 | if (ret) { | |
1283 | goto error_snapshot_output; | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1289 | error_snapshot_output: | |
1290 | free(name); | |
1291 | free(output.path); | |
1292 | free(output.control_uri); | |
1293 | free(output.data_uri); | |
1294 | lttng_snapshot_output_destroy(snapshot_output); | |
1295 | if (ret) { | |
1296 | goto end; | |
1297 | } | |
1298 | } | |
1299 | end: | |
1300 | return ret; | |
1301 | } | |
1302 | ||
1303 | static | |
1304 | int create_session(const char *name, | |
1305 | struct lttng_domain *kernel_domain, | |
1306 | struct lttng_domain *ust_domain, | |
1307 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1308 | struct lttng_domain *log4j_domain, |
dcf266c0 JG |
1309 | xmlNodePtr output_node, |
1310 | uint64_t live_timer_interval) | |
1311 | { | |
1312 | int ret; | |
1313 | struct consumer_output output = { 0 }; | |
1314 | xmlNodePtr consumer_output_node; | |
1315 | ||
1316 | assert(name); | |
dcf266c0 JG |
1317 | |
1318 | if (output_node) { | |
1319 | consumer_output_node = xmlFirstElementChild(output_node); | |
1320 | if (!consumer_output_node) { | |
1321 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1322 | goto end; | |
1323 | } | |
1324 | ||
1325 | if (strcmp((const char *) consumer_output_node->name, | |
1326 | config_element_consumer_output)) { | |
1327 | WARN("Invalid output type, expected %s node", | |
1328 | config_element_consumer_output); | |
1329 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1330 | goto end; | |
1331 | } | |
1332 | ||
1333 | ret = process_consumer_output(consumer_output_node, &output); | |
1334 | if (ret) { | |
1335 | goto end; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | if (live_timer_interval != UINT64_MAX && | |
1340 | !output.control_uri && !output.data_uri) { | |
1341 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1342 | goto end; | |
1343 | } | |
1344 | ||
1345 | if (output.control_uri || output.data_uri) { | |
1346 | int i; | |
1347 | struct lttng_domain *domain; | |
1348 | struct lttng_domain *domains[] = | |
c8c5f7ce | 1349 | { kernel_domain, ust_domain, jul_domain, log4j_domain }; |
dcf266c0 JG |
1350 | |
1351 | /* network destination */ | |
1352 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1353 | /* |
1354 | * URLs are provided for sure since the test above make sure that | |
1355 | * with a live timer the data and control URIs are provided. So, | |
1356 | * NULL is passed here and will be set right after. | |
1357 | */ | |
1358 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1359 | } else { |
1360 | ret = lttng_create_session(name, NULL); | |
1361 | } | |
1362 | if (ret) { | |
1363 | goto end; | |
1364 | } | |
1365 | ||
301423df | 1366 | for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) { |
dcf266c0 JG |
1367 | domain = domains[i]; |
1368 | if (!domain) { | |
1369 | continue; | |
1370 | } | |
1371 | ||
1372 | ret = create_session_net_output(name, domain, output.control_uri, | |
1373 | output.data_uri); | |
1374 | if (ret) { | |
1375 | goto end; | |
1376 | } | |
1377 | } | |
1378 | } else { | |
1379 | /* either local output or no output */ | |
1380 | ret = lttng_create_session(name, output.path); | |
1381 | if (ret) { | |
1382 | goto end; | |
1383 | } | |
1384 | } | |
1385 | end: | |
1386 | free(output.path); | |
1387 | free(output.control_uri); | |
1388 | free(output.data_uri); | |
1389 | return ret; | |
1390 | } | |
1391 | static | |
1392 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1393 | struct lttng_event_probe_attr *attr) | |
1394 | { | |
1395 | int ret; | |
1396 | ||
1397 | assert(probe_attribute_node); | |
1398 | assert(attr); | |
1399 | ||
1400 | if (!strcmp((const char *) probe_attribute_node->name, | |
1401 | config_element_address)) { | |
1402 | xmlChar *content; | |
1403 | uint64_t addr = 0; | |
1404 | ||
1405 | /* addr */ | |
1406 | content = xmlNodeGetContent(probe_attribute_node); | |
1407 | if (!content) { | |
1408 | ret = -LTTNG_ERR_NOMEM; | |
1409 | goto end; | |
1410 | } | |
1411 | ||
1412 | ret = parse_uint(content, &addr); | |
1413 | free(content); | |
1414 | if (ret) { | |
1415 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1416 | goto end; | |
1417 | } | |
1418 | ||
1419 | attr->addr = addr; | |
1420 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1421 | config_element_offset)) { | |
1422 | xmlChar *content; | |
1423 | uint64_t offset = 0; | |
1424 | ||
1425 | /* offset */ | |
1426 | content = xmlNodeGetContent(probe_attribute_node); | |
1427 | if (!content) { | |
1428 | ret = -LTTNG_ERR_NOMEM; | |
1429 | goto end; | |
1430 | } | |
1431 | ||
1432 | ret = parse_uint(content, &offset); | |
1433 | free(content); | |
1434 | if (ret) { | |
1435 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1436 | goto end; | |
1437 | } | |
1438 | ||
1439 | attr->offset = offset; | |
1440 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1441 | config_element_symbol_name)) { | |
1442 | xmlChar *content; | |
1443 | size_t name_len; | |
1444 | ||
1445 | /* symbol_name */ | |
1446 | content = xmlNodeGetContent(probe_attribute_node); | |
1447 | if (!content) { | |
1448 | ret = -LTTNG_ERR_NOMEM; | |
1449 | goto end; | |
1450 | } | |
1451 | ||
1452 | name_len = strlen((char *) content); | |
1453 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1454 | WARN("symbol_name too long."); | |
1455 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1456 | free(content); | |
1457 | goto end; | |
1458 | } | |
1459 | ||
1460 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1461 | free(content); | |
1462 | } | |
1463 | ret = 0; | |
1464 | end: | |
1465 | return ret; | |
1466 | } | |
1467 | ||
1468 | static | |
1469 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
1470 | const char *channel_name) | |
1471 | { | |
1472 | int ret, i; | |
1473 | xmlNodePtr node; | |
1474 | struct lttng_event event; | |
1475 | char **exclusions = NULL; | |
1476 | unsigned long exclusion_count = 0; | |
1477 | char *filter_expression = NULL; | |
1478 | ||
1479 | assert(event_node); | |
1480 | assert(handle); | |
1481 | assert(channel_name); | |
1482 | ||
1483 | memset(&event, 0, sizeof(event)); | |
1484 | ||
f40eba3d JG |
1485 | /* Initialize default log level which varies by domain */ |
1486 | switch (handle->domain.type) | |
1487 | { | |
1488 | case LTTNG_DOMAIN_JUL: | |
1489 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1490 | break; | |
1491 | case LTTNG_DOMAIN_LOG4J: | |
1492 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1493 | break; | |
1494 | case LTTNG_DOMAIN_PYTHON: | |
1495 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1496 | break; | |
1497 | case LTTNG_DOMAIN_UST: | |
1498 | case LTTNG_DOMAIN_KERNEL: | |
1499 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1500 | break; | |
1501 | default: | |
1502 | assert(0); | |
1503 | } | |
1504 | ||
dcf266c0 JG |
1505 | for (node = xmlFirstElementChild(event_node); node; |
1506 | node = xmlNextElementSibling(node)) { | |
1507 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1508 | xmlChar *content; | |
1509 | size_t name_len; | |
1510 | ||
1511 | /* name */ | |
1512 | content = xmlNodeGetContent(node); | |
1513 | if (!content) { | |
1514 | ret = -LTTNG_ERR_NOMEM; | |
1515 | goto end; | |
1516 | } | |
1517 | ||
1518 | name_len = strlen((char *) content); | |
1519 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1520 | WARN("Channel name too long."); | |
1521 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1522 | free(content); | |
1523 | goto end; | |
1524 | } | |
1525 | ||
1526 | strncpy(event.name, (const char *) content, name_len); | |
1527 | free(content); | |
1528 | } else if (!strcmp((const char *) node->name, | |
1529 | config_element_enabled)) { | |
1530 | xmlChar *content = xmlNodeGetContent(node); | |
1531 | ||
1532 | /* enabled */ | |
1533 | if (!content) { | |
1534 | ret = -LTTNG_ERR_NOMEM; | |
1535 | goto end; | |
1536 | } | |
1537 | ||
1538 | ret = parse_bool(content, &event.enabled); | |
1539 | free(content); | |
1540 | if (ret) { | |
1541 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1542 | goto end; | |
1543 | } | |
1544 | } else if (!strcmp((const char *) node->name, | |
1545 | config_element_type)) { | |
1546 | xmlChar *content = xmlNodeGetContent(node); | |
1547 | ||
1548 | /* type */ | |
1549 | if (!content) { | |
1550 | ret = -LTTNG_ERR_NOMEM; | |
1551 | goto end; | |
1552 | } | |
1553 | ||
1554 | ret = get_event_type(content); | |
1555 | free(content); | |
1556 | if (ret < 0) { | |
1557 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1558 | goto end; | |
1559 | } | |
1560 | ||
1561 | event.type = ret; | |
1562 | } else if (!strcmp((const char *) node->name, | |
1563 | config_element_loglevel_type)) { | |
1564 | xmlChar *content = xmlNodeGetContent(node); | |
1565 | ||
1566 | /* loglevel_type */ | |
1567 | if (!content) { | |
1568 | ret = -LTTNG_ERR_NOMEM; | |
1569 | goto end; | |
1570 | } | |
1571 | ||
1572 | ret = get_loglevel_type(content); | |
1573 | free(content); | |
1574 | if (ret < 0) { | |
1575 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1576 | goto end; | |
1577 | } | |
1578 | ||
1579 | event.loglevel_type = ret; | |
1580 | } else if (!strcmp((const char *) node->name, | |
1581 | config_element_loglevel)) { | |
1582 | xmlChar *content; | |
1583 | int64_t loglevel = 0; | |
1584 | ||
1585 | /* loglevel */ | |
1586 | content = xmlNodeGetContent(node); | |
1587 | if (!content) { | |
1588 | ret = -LTTNG_ERR_NOMEM; | |
1589 | goto end; | |
1590 | } | |
1591 | ||
1592 | ret = parse_int(content, &loglevel); | |
1593 | free(content); | |
1594 | if (ret) { | |
1595 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1600 | WARN("loglevel out of range."); | |
1601 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1602 | goto end; | |
1603 | } | |
1604 | ||
1605 | event.loglevel = loglevel; | |
1606 | } else if (!strcmp((const char *) node->name, | |
1607 | config_element_filter)) { | |
1608 | xmlChar *content = | |
1609 | xmlNodeGetContent(node); | |
1610 | ||
1611 | /* filter */ | |
1612 | if (!content) { | |
1613 | ret = -LTTNG_ERR_NOMEM; | |
1614 | goto end; | |
1615 | } | |
1616 | ||
1617 | filter_expression = strdup((char *) content); | |
1618 | free(content); | |
1619 | if (!filter_expression) { | |
1620 | ret = -LTTNG_ERR_NOMEM; | |
1621 | goto end; | |
1622 | } | |
1623 | } else if (!strcmp((const char *) node->name, | |
1624 | config_element_exclusions)) { | |
1625 | xmlNodePtr exclusion_node; | |
1626 | int exclusion_index = 0; | |
1627 | ||
1628 | /* exclusions */ | |
1629 | if (exclusions) { | |
1630 | /* | |
1631 | * Exclusions has already been initialized, | |
1632 | * invalid file. | |
1633 | */ | |
1634 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1635 | goto end; | |
1636 | } | |
1637 | ||
1638 | exclusion_count = xmlChildElementCount(node); | |
1639 | if (!exclusion_count) { | |
1640 | continue; | |
1641 | } | |
1642 | ||
1643 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1644 | if (!exclusions) { | |
1645 | exclusion_count = 0; | |
1646 | ret = -LTTNG_ERR_NOMEM; | |
1647 | goto end; | |
1648 | } | |
1649 | ||
1650 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1651 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1652 | xmlChar *content = | |
1653 | xmlNodeGetContent(exclusion_node); | |
1654 | ||
1655 | if (!content) { | |
1656 | ret = -LTTNG_ERR_NOMEM; | |
1657 | goto end; | |
1658 | } | |
1659 | ||
1660 | exclusions[exclusion_index] = strdup((const char *) content); | |
1661 | free(content); | |
1662 | if (!exclusions[exclusion_index]) { | |
1663 | ret = -LTTNG_ERR_NOMEM; | |
1664 | goto end; | |
1665 | } | |
1666 | exclusion_index++; | |
1667 | } | |
1668 | ||
1669 | event.exclusion = 1; | |
1670 | } else if (!strcmp((const char *) node->name, | |
1671 | config_element_attributes)) { | |
1672 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1673 | ||
1674 | /* attributes */ | |
1675 | if (!attribute_node) { | |
1676 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1677 | goto end; | |
1678 | } | |
1679 | ||
1680 | if (!strcmp((const char *) node->name, | |
1681 | config_element_probe_attributes)) { | |
1682 | xmlNodePtr probe_attribute_node; | |
1683 | ||
1684 | /* probe_attributes */ | |
1685 | for (probe_attribute_node = | |
1686 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1687 | probe_attribute_node = xmlNextElementSibling( | |
1688 | probe_attribute_node)) { | |
1689 | ||
1690 | ret = process_probe_attribute_node(probe_attribute_node, | |
1691 | &event.attr.probe); | |
1692 | if (ret) { | |
1693 | goto end; | |
1694 | } | |
1695 | } | |
1696 | } else { | |
1697 | size_t sym_len; | |
1698 | xmlChar *content; | |
1699 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1700 | ||
1701 | /* function_attributes */ | |
1702 | content = xmlNodeGetContent(symbol_node); | |
1703 | if (!content) { | |
1704 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1705 | goto end; | |
1706 | } | |
1707 | ||
1708 | sym_len = strlen((char *) content); | |
1709 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1710 | WARN("Function name too long."); | |
1711 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1712 | free(content); | |
1713 | goto end; | |
1714 | } | |
1715 | ||
1716 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1717 | sym_len); | |
1718 | free(content); | |
1719 | } | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1724 | filter_expression, exclusion_count, exclusions); | |
065321e9 JG |
1725 | if (ret) { |
1726 | goto end; | |
1727 | } | |
1728 | ||
1729 | if (!event.enabled) { | |
1730 | /* | |
1731 | * Note that we should use lttng_disable_event_ext() (2.6+) to | |
1732 | * eliminate the risk of clashing on events of the same | |
1733 | * name (with different event types and loglevels). | |
1734 | * | |
1735 | * Unfortunately, lttng_disable_event_ext() only performs a | |
1736 | * match on the name and event type and errors out if any other | |
1737 | * event attribute is not set to its default value. | |
1738 | * | |
1739 | * This will disable all events that match this name. | |
1740 | */ | |
1741 | ret = lttng_disable_event(handle, event.name, channel_name); | |
1742 | } | |
dcf266c0 JG |
1743 | end: |
1744 | for (i = 0; i < exclusion_count; i++) { | |
1745 | free(exclusions[i]); | |
1746 | } | |
1747 | ||
1748 | free(exclusions); | |
1749 | free(filter_expression); | |
1750 | return ret; | |
1751 | } | |
1752 | ||
1753 | static | |
1754 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1755 | const char *channel_name) | |
1756 | { | |
1757 | int ret = 0; | |
1758 | xmlNodePtr node; | |
1759 | ||
1760 | assert(events_node); | |
1761 | assert(handle); | |
1762 | assert(channel_name); | |
1763 | ||
1764 | for (node = xmlFirstElementChild(events_node); node; | |
1765 | node = xmlNextElementSibling(node)) { | |
1766 | ret = process_event_node(node, handle, channel_name); | |
1767 | if (ret) { | |
1768 | goto end; | |
1769 | } | |
1770 | } | |
1771 | end: | |
1772 | return ret; | |
1773 | } | |
1774 | ||
1775 | static | |
1776 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1777 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1778 | xmlNodePtr *events_node) | |
1779 | { | |
1780 | int ret; | |
1781 | ||
1782 | assert(attr_node); | |
1783 | assert(channel); | |
1784 | assert(contexts_node); | |
1785 | assert(events_node); | |
1786 | ||
1787 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1788 | xmlChar *content; | |
1789 | size_t name_len; | |
1790 | ||
1791 | /* name */ | |
1792 | content = xmlNodeGetContent(attr_node); | |
1793 | if (!content) { | |
1794 | ret = -LTTNG_ERR_NOMEM; | |
1795 | goto end; | |
1796 | } | |
1797 | ||
1798 | name_len = strlen((char *) content); | |
1799 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1800 | WARN("Channel name too long."); | |
1801 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1802 | free(content); | |
1803 | goto end; | |
1804 | } | |
1805 | ||
1806 | strncpy(channel->name, (const char *) content, name_len); | |
1807 | free(content); | |
1808 | } else if (!strcmp((const char *) attr_node->name, | |
1809 | config_element_enabled)) { | |
1810 | xmlChar *content; | |
1811 | int enabled; | |
1812 | ||
1813 | /* enabled */ | |
1814 | content = xmlNodeGetContent(attr_node); | |
1815 | if (!content) { | |
1816 | ret = -LTTNG_ERR_NOMEM; | |
1817 | goto end; | |
1818 | } | |
1819 | ||
1820 | ret = parse_bool(content, &enabled); | |
1821 | free(content); | |
1822 | if (ret) { | |
1823 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1824 | goto end; | |
1825 | } | |
1826 | ||
1827 | channel->enabled = enabled; | |
1828 | } else if (!strcmp((const char *) attr_node->name, | |
1829 | config_element_overwrite_mode)) { | |
1830 | xmlChar *content; | |
1831 | ||
1832 | /* overwrite_mode */ | |
1833 | content = xmlNodeGetContent(attr_node); | |
1834 | if (!content) { | |
1835 | ret = -LTTNG_ERR_NOMEM; | |
1836 | goto end; | |
1837 | } | |
1838 | ||
1839 | ret = get_overwrite_mode(content); | |
1840 | free(content); | |
1841 | if (ret < 0) { | |
1842 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1843 | goto end; | |
1844 | } | |
1845 | ||
1846 | channel->attr.overwrite = ret; | |
1847 | } else if (!strcmp((const char *) attr_node->name, | |
1848 | config_element_subbuf_size)) { | |
1849 | xmlChar *content; | |
1850 | ||
1851 | /* subbuffer_size */ | |
1852 | content = xmlNodeGetContent(attr_node); | |
1853 | if (!content) { | |
1854 | ret = -LTTNG_ERR_NOMEM; | |
1855 | goto end; | |
1856 | } | |
1857 | ||
1858 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1859 | free(content); | |
1860 | if (ret) { | |
1861 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1862 | goto end; | |
1863 | } | |
1864 | } else if (!strcmp((const char *) attr_node->name, | |
1865 | config_element_num_subbuf)) { | |
1866 | xmlChar *content; | |
1867 | ||
1868 | /* subbuffer_count */ | |
1869 | content = xmlNodeGetContent(attr_node); | |
1870 | if (!content) { | |
1871 | ret = -LTTNG_ERR_NOMEM; | |
1872 | goto end; | |
1873 | } | |
1874 | ||
1875 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1876 | free(content); | |
1877 | if (ret) { | |
1878 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1879 | goto end; | |
1880 | } | |
1881 | } else if (!strcmp((const char *) attr_node->name, | |
1882 | config_element_switch_timer_interval)) { | |
1883 | xmlChar *content; | |
1884 | uint64_t switch_timer_interval = 0; | |
1885 | ||
1886 | /* switch_timer_interval */ | |
1887 | content = xmlNodeGetContent(attr_node); | |
1888 | if (!content) { | |
1889 | ret = -LTTNG_ERR_NOMEM; | |
1890 | goto end; | |
1891 | } | |
1892 | ||
1893 | ret = parse_uint(content, &switch_timer_interval); | |
1894 | free(content); | |
1895 | if (ret) { | |
1896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1897 | goto end; | |
1898 | } | |
1899 | ||
1900 | if (switch_timer_interval > UINT_MAX) { | |
1901 | WARN("switch_timer_interval out of range."); | |
1902 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1903 | goto end; | |
1904 | } | |
1905 | ||
1906 | channel->attr.switch_timer_interval = | |
1907 | switch_timer_interval; | |
1908 | } else if (!strcmp((const char *) attr_node->name, | |
1909 | config_element_read_timer_interval)) { | |
1910 | xmlChar *content; | |
1911 | uint64_t read_timer_interval = 0; | |
1912 | ||
1913 | /* read_timer_interval */ | |
1914 | content = xmlNodeGetContent(attr_node); | |
1915 | if (!content) { | |
1916 | ret = -LTTNG_ERR_NOMEM; | |
1917 | goto end; | |
1918 | } | |
1919 | ||
1920 | ret = parse_uint(content, &read_timer_interval); | |
1921 | free(content); | |
1922 | if (ret) { | |
1923 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1924 | goto end; | |
1925 | } | |
1926 | ||
1927 | if (read_timer_interval > UINT_MAX) { | |
1928 | WARN("read_timer_interval out of range."); | |
1929 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1930 | goto end; | |
1931 | } | |
1932 | ||
1933 | channel->attr.read_timer_interval = | |
1934 | read_timer_interval; | |
1935 | } else if (!strcmp((const char *) attr_node->name, | |
1936 | config_element_output_type)) { | |
1937 | xmlChar *content; | |
1938 | ||
1939 | /* output_type */ | |
1940 | content = xmlNodeGetContent(attr_node); | |
1941 | if (!content) { | |
1942 | ret = -LTTNG_ERR_NOMEM; | |
1943 | goto end; | |
1944 | } | |
1945 | ||
1946 | ret = get_output_type(content); | |
1947 | free(content); | |
1948 | if (ret < 0) { | |
1949 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1950 | goto end; | |
1951 | } | |
1952 | ||
1953 | channel->attr.output = ret; | |
1954 | } else if (!strcmp((const char *) attr_node->name, | |
1955 | config_element_tracefile_size)) { | |
1956 | xmlChar *content; | |
1957 | ||
1958 | /* tracefile_size */ | |
1959 | content = xmlNodeGetContent(attr_node); | |
1960 | if (!content) { | |
1961 | ret = -LTTNG_ERR_NOMEM; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
1965 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
1966 | free(content); | |
1967 | if (ret) { | |
1968 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1969 | goto end; | |
1970 | } | |
1971 | } else if (!strcmp((const char *) attr_node->name, | |
1972 | config_element_tracefile_count)) { | |
1973 | xmlChar *content; | |
1974 | ||
1975 | /* tracefile_count */ | |
1976 | content = xmlNodeGetContent(attr_node); | |
1977 | if (!content) { | |
1978 | ret = -LTTNG_ERR_NOMEM; | |
1979 | goto end; | |
1980 | } | |
1981 | ||
1982 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
1983 | free(content); | |
1984 | if (ret) { | |
1985 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1986 | goto end; | |
1987 | } | |
1988 | } else if (!strcmp((const char *) attr_node->name, | |
1989 | config_element_live_timer_interval)) { | |
1990 | xmlChar *content; | |
1991 | uint64_t live_timer_interval = 0; | |
1992 | ||
1993 | /* live_timer_interval */ | |
1994 | content = xmlNodeGetContent(attr_node); | |
1995 | if (!content) { | |
1996 | ret = -LTTNG_ERR_NOMEM; | |
1997 | goto end; | |
1998 | } | |
1999 | ||
2000 | ret = parse_uint(content, &live_timer_interval); | |
2001 | free(content); | |
2002 | if (ret) { | |
2003 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2004 | goto end; | |
2005 | } | |
2006 | ||
2007 | if (live_timer_interval > UINT_MAX) { | |
2008 | WARN("live_timer_interval out of range."); | |
2009 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2010 | goto end; | |
2011 | } | |
2012 | ||
2013 | channel->attr.live_timer_interval = | |
2014 | live_timer_interval; | |
2015 | } else if (!strcmp((const char *) attr_node->name, | |
2016 | config_element_events)) { | |
2017 | /* events */ | |
2018 | *events_node = attr_node; | |
2019 | } else { | |
2020 | /* contexts */ | |
2021 | *contexts_node = attr_node; | |
2022 | } | |
2023 | ret = 0; | |
2024 | end: | |
2025 | return ret; | |
2026 | } | |
2027 | ||
2028 | static | |
2029 | int process_context_node(xmlNodePtr context_node, | |
2030 | struct lttng_handle *handle, const char *channel_name) | |
2031 | { | |
2032 | int ret; | |
2033 | struct lttng_event_context context; | |
2034 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2035 | ||
2036 | assert(handle); | |
2037 | assert(channel_name); | |
2038 | ||
2039 | if (!context_child_node) { | |
2040 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2041 | goto end; | |
2042 | } | |
2043 | ||
2044 | memset(&context, 0, sizeof(context)); | |
2045 | ||
2046 | if (!strcmp((const char *) context_child_node->name, | |
2047 | config_element_type)) { | |
2048 | /* type */ | |
2049 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2050 | |
dcf266c0 JG |
2051 | if (!content) { |
2052 | ret = -LTTNG_ERR_NOMEM; | |
2053 | goto end; | |
2054 | } | |
2055 | ||
2056 | ret = get_context_type(content); | |
2057 | free(content); | |
2058 | if (ret < 0) { | |
2059 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2060 | goto end; | |
2061 | } | |
2062 | ||
2063 | context.ctx = ret; | |
045fc617 JG |
2064 | } else if (!strcmp((const char *) context_child_node->name, |
2065 | config_element_context_perf)) { | |
2066 | /* perf */ | |
dcf266c0 JG |
2067 | xmlNodePtr perf_attr_node; |
2068 | ||
14ce5bd8 JG |
2069 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2070 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2071 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2072 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2073 | perf_attr_node; perf_attr_node = | |
2074 | xmlNextElementSibling(perf_attr_node)) { | |
2075 | if (!strcmp((const char *) perf_attr_node->name, | |
2076 | config_element_type)) { | |
2077 | xmlChar *content; | |
2078 | uint64_t type = 0; | |
2079 | ||
2080 | /* type */ | |
2081 | content = xmlNodeGetContent(perf_attr_node); | |
2082 | if (!content) { | |
2083 | ret = -LTTNG_ERR_NOMEM; | |
2084 | goto end; | |
2085 | } | |
2086 | ||
2087 | ret = parse_uint(content, &type); | |
2088 | free(content); | |
2089 | if (ret) { | |
2090 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2091 | goto end; | |
2092 | } | |
2093 | ||
2094 | if (type > UINT32_MAX) { | |
2095 | WARN("perf context type out of range."); | |
2096 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2097 | goto end; | |
2098 | } | |
2099 | ||
2100 | context.u.perf_counter.type = type; | |
2101 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2102 | config_element_config)) { | |
2103 | xmlChar *content; | |
2104 | uint64_t config = 0; | |
2105 | ||
2106 | /* config */ | |
2107 | content = xmlNodeGetContent(perf_attr_node); | |
2108 | if (!content) { | |
2109 | ret = -LTTNG_ERR_NOMEM; | |
2110 | goto end; | |
2111 | } | |
2112 | ||
2113 | ret = parse_uint(content, &config); | |
2114 | free(content); | |
2115 | if (ret) { | |
2116 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2117 | goto end; | |
2118 | } | |
2119 | ||
2120 | context.u.perf_counter.config = config; | |
2121 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2122 | config_element_name)) { | |
2123 | xmlChar *content; | |
2124 | size_t name_len; | |
2125 | ||
2126 | /* name */ | |
2127 | content = xmlNodeGetContent(perf_attr_node); | |
2128 | if (!content) { | |
2129 | ret = -LTTNG_ERR_NOMEM; | |
2130 | goto end; | |
2131 | } | |
2132 | ||
2133 | name_len = strlen((char *) content); | |
2134 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2135 | WARN("perf context name too long."); | |
2136 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2137 | free(content); | |
2138 | goto end; | |
2139 | } | |
2140 | ||
2141 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2142 | name_len); | |
2143 | free(content); | |
2144 | } | |
2145 | } | |
045fc617 JG |
2146 | } else if (!strcmp((const char *) context_child_node->name, |
2147 | config_element_context_app)) { | |
2148 | /* application context */ | |
2149 | xmlNodePtr app_ctx_node; | |
2150 | ||
2151 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2152 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2153 | app_ctx_node; app_ctx_node = | |
2154 | xmlNextElementSibling(app_ctx_node)) { | |
2155 | xmlChar *content; | |
2156 | char **target = strcmp( | |
2157 | (const char *) app_ctx_node->name, | |
2158 | config_element_context_app_provider_name) == 0 ? | |
2159 | &context.u.app_ctx.provider_name : | |
2160 | &context.u.app_ctx.ctx_name; | |
2161 | ||
2162 | content = xmlNodeGetContent(app_ctx_node); | |
2163 | if (!content) { | |
2164 | ret = -LTTNG_ERR_NOMEM; | |
2165 | goto end; | |
2166 | } | |
2167 | ||
2168 | *target = (char *) content; | |
2169 | } | |
2170 | } else { | |
2171 | /* Unrecognized context type */ | |
2172 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2173 | goto end; | |
dcf266c0 JG |
2174 | } |
2175 | ||
2176 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2177 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2178 | free(context.u.app_ctx.provider_name); | |
2179 | free(context.u.app_ctx.ctx_name); | |
2180 | } | |
dcf266c0 JG |
2181 | end: |
2182 | return ret; | |
2183 | } | |
2184 | ||
2185 | static | |
2186 | int process_contexts_node(xmlNodePtr contexts_node, | |
2187 | struct lttng_handle *handle, const char *channel_name) | |
2188 | { | |
2189 | int ret = 0; | |
2190 | xmlNodePtr context_node; | |
2191 | ||
2192 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2193 | context_node = xmlNextElementSibling(context_node)) { | |
2194 | ret = process_context_node(context_node, handle, channel_name); | |
2195 | if (ret) { | |
2196 | goto end; | |
2197 | } | |
2198 | } | |
2199 | end: | |
2200 | return ret; | |
2201 | } | |
2202 | ||
847a5916 JR |
2203 | static |
2204 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2205 | struct lttng_handle *handle) | |
2206 | { | |
dd49e13f | 2207 | int ret = 0, child; |
847a5916 JR |
2208 | xmlNodePtr targets_node = NULL; |
2209 | xmlNodePtr node; | |
2210 | ||
2211 | assert(handle); | |
2212 | assert(pid_tracker_node); | |
2213 | /* get the targets node */ | |
2214 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2215 | node = xmlNextElementSibling(node)) { | |
2216 | if (!strcmp((const char *) node->name, | |
2217 | config_element_targets)) { | |
2218 | targets_node = node; | |
2219 | break; | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | if (!targets_node) { | |
2224 | ret = LTTNG_ERR_INVALID; | |
2225 | goto end; | |
2226 | } | |
2227 | ||
2228 | /* Go through all pid_target node */ | |
2229 | child = xmlChildElementCount(targets_node); | |
2230 | if (child == 0) { | |
2231 | /* The session is explicitly set to target nothing. */ | |
2232 | ret = lttng_untrack_pid(handle, -1); | |
2233 | if (ret) { | |
2234 | goto end; | |
2235 | } | |
2236 | } | |
2237 | for (node = xmlFirstElementChild(targets_node); node; | |
2238 | node = xmlNextElementSibling(node)) { | |
2239 | xmlNodePtr pid_target_node = node; | |
2240 | ||
2241 | /* get pid node and track it */ | |
2242 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2243 | node = xmlNextElementSibling(node)) { | |
2244 | if (!strcmp((const char *) node->name, | |
2245 | config_element_pid)) { | |
2246 | int64_t pid; | |
2247 | xmlChar *content = NULL; | |
2248 | ||
2249 | content = xmlNodeGetContent(node); | |
2250 | if (!content) { | |
2251 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2252 | goto end; | |
2253 | } | |
2254 | ||
2255 | ret = parse_int(content, &pid); | |
2256 | free(content); | |
2257 | if (ret) { | |
2258 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2259 | goto end; | |
2260 | } | |
2261 | ||
2262 | ret = lttng_track_pid(handle, (int) pid); | |
2263 | if (ret) { | |
2264 | goto end; | |
2265 | } | |
2266 | } | |
2267 | } | |
2268 | node = pid_target_node; | |
2269 | } | |
2270 | ||
2271 | end: | |
2272 | return ret; | |
2273 | } | |
2274 | ||
2275 | ||
dcf266c0 JG |
2276 | static |
2277 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2278 | { | |
2279 | int ret; | |
2280 | struct lttng_domain domain = { 0 }; | |
2281 | struct lttng_handle *handle = NULL; | |
2282 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2283 | xmlNodePtr trackers_node = NULL; |
2284 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2285 | xmlNodePtr node; |
2286 | ||
2287 | assert(session_name); | |
2288 | ||
2289 | ret = init_domain(domain_node, &domain); | |
2290 | if (ret) { | |
2291 | goto end; | |
2292 | } | |
2293 | ||
2294 | handle = lttng_create_handle(session_name, &domain); | |
2295 | if (!handle) { | |
2296 | ret = -LTTNG_ERR_NOMEM; | |
2297 | goto end; | |
2298 | } | |
2299 | ||
2300 | /* get the channels node */ | |
2301 | for (node = xmlFirstElementChild(domain_node); node; | |
2302 | node = xmlNextElementSibling(node)) { | |
2303 | if (!strcmp((const char *) node->name, | |
2304 | config_element_channels)) { | |
2305 | channels_node = node; | |
2306 | break; | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | if (!channels_node) { | |
2311 | goto end; | |
2312 | } | |
2313 | ||
2314 | /* create all channels */ | |
2315 | for (node = xmlFirstElementChild(channels_node); node; | |
2316 | node = xmlNextElementSibling(node)) { | |
2317 | struct lttng_channel channel; | |
2318 | xmlNodePtr contexts_node = NULL; | |
2319 | xmlNodePtr events_node = NULL; | |
2320 | xmlNodePtr channel_attr_node; | |
2321 | ||
2322 | memset(&channel, 0, sizeof(channel)); | |
2323 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2324 | ||
2325 | for (channel_attr_node = xmlFirstElementChild(node); | |
2326 | channel_attr_node; channel_attr_node = | |
2327 | xmlNextElementSibling(channel_attr_node)) { | |
2328 | ret = process_channel_attr_node(channel_attr_node, | |
2329 | &channel, &contexts_node, &events_node); | |
2330 | if (ret) { | |
2331 | goto end; | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | ret = lttng_enable_channel(handle, &channel); | |
2336 | if (ret < 0) { | |
2337 | goto end; | |
2338 | } | |
2339 | ||
2340 | ret = process_events_node(events_node, handle, channel.name); | |
2341 | if (ret) { | |
2342 | goto end; | |
2343 | } | |
2344 | ||
2345 | ret = process_contexts_node(contexts_node, handle, | |
2346 | channel.name); | |
2347 | if (ret) { | |
2348 | goto end; | |
2349 | } | |
2350 | } | |
847a5916 JR |
2351 | |
2352 | /* get the trackers node */ | |
2353 | for (node = xmlFirstElementChild(domain_node); node; | |
2354 | node = xmlNextElementSibling(node)) { | |
2355 | if (!strcmp((const char *) node->name, | |
2356 | config_element_trackers)) { | |
2357 | trackers_node = node; | |
2358 | break; | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | if (!trackers_node) { | |
2363 | goto end; | |
2364 | } | |
2365 | ||
2366 | for (node = xmlFirstElementChild(trackers_node); node; | |
2367 | node = xmlNextElementSibling(node)) { | |
2368 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2369 | pid_tracker_node = node; | |
2370 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2371 | if (ret) { | |
2372 | goto end; | |
2373 | } | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | if (!pid_tracker_node) { | |
2378 | lttng_track_pid(handle, -1); | |
2379 | } | |
2380 | ||
dcf266c0 JG |
2381 | end: |
2382 | lttng_destroy_handle(handle); | |
2383 | return ret; | |
2384 | } | |
2385 | ||
2386 | static | |
2387 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
2388 | int override) | |
2389 | { | |
2390 | int ret, started = -1, snapshot_mode = -1; | |
2391 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2392 | xmlChar *name = NULL; |
9e7c9f56 | 2393 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2394 | xmlNodePtr domains_node = NULL; |
2395 | xmlNodePtr output_node = NULL; | |
2396 | xmlNodePtr node; | |
2397 | struct lttng_domain *kernel_domain = NULL; | |
2398 | struct lttng_domain *ust_domain = NULL; | |
2399 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2400 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2401 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2402 | |
2403 | for (node = xmlFirstElementChild(session_node); node; | |
2404 | node = xmlNextElementSibling(node)) { | |
2405 | if (!name && !strcmp((const char *) node->name, | |
2406 | config_element_name)) { | |
2407 | /* name */ | |
2408 | xmlChar *node_content = xmlNodeGetContent(node); | |
2409 | if (!node_content) { | |
2410 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2411 | goto error; |
dcf266c0 JG |
2412 | } |
2413 | ||
d324faf7 | 2414 | name = node_content; |
dcf266c0 JG |
2415 | } else if (!domains_node && !strcmp((const char *) node->name, |
2416 | config_element_domains)) { | |
2417 | /* domains */ | |
2418 | domains_node = node; | |
2419 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2420 | config_element_started)) { | |
2421 | /* started */ | |
2422 | xmlChar *node_content = xmlNodeGetContent(node); | |
2423 | if (!node_content) { | |
2424 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2425 | goto error; |
dcf266c0 JG |
2426 | } |
2427 | ||
2428 | ret = parse_bool(node_content, &started); | |
2429 | free(node_content); | |
2430 | if (ret) { | |
2431 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2432 | goto error; |
dcf266c0 JG |
2433 | } |
2434 | } else if (!output_node && !strcmp((const char *) node->name, | |
2435 | config_element_output)) { | |
2436 | /* output */ | |
2437 | output_node = node; | |
9e7c9f56 JR |
2438 | } else if (!shm_path && !strcmp((const char *) node->name, |
2439 | config_element_shared_memory_path)) { | |
2440 | /* shared memory path */ | |
2441 | xmlChar *node_content = xmlNodeGetContent(node); | |
2442 | if (!node_content) { | |
2443 | ret = -LTTNG_ERR_NOMEM; | |
2444 | goto error; | |
2445 | } | |
2446 | ||
2447 | shm_path = node_content; | |
dcf266c0 JG |
2448 | } else { |
2449 | /* attributes, snapshot_mode or live_timer_interval */ | |
2450 | xmlNodePtr attributes_child = | |
2451 | xmlFirstElementChild(node); | |
2452 | ||
2453 | if (!strcmp((const char *) attributes_child->name, | |
2454 | config_element_snapshot_mode)) { | |
2455 | /* snapshot_mode */ | |
2456 | xmlChar *snapshot_mode_content = | |
2457 | xmlNodeGetContent(attributes_child); | |
2458 | if (!snapshot_mode_content) { | |
2459 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2460 | goto error; |
dcf266c0 JG |
2461 | } |
2462 | ||
2463 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2464 | free(snapshot_mode_content); | |
2465 | if (ret) { | |
2466 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2467 | goto error; |
dcf266c0 JG |
2468 | } |
2469 | } else { | |
2470 | /* live_timer_interval */ | |
2471 | xmlChar *timer_interval_content = | |
2472 | xmlNodeGetContent(attributes_child); | |
2473 | if (!timer_interval_content) { | |
2474 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2475 | goto error; |
dcf266c0 JG |
2476 | } |
2477 | ||
2478 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2479 | free(timer_interval_content); | |
2480 | if (ret) { | |
2481 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2482 | goto error; |
dcf266c0 JG |
2483 | } |
2484 | } | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | if (!name) { | |
2489 | /* Mandatory attribute, as defined in the session XSD */ | |
2490 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2491 | goto error; |
dcf266c0 JG |
2492 | } |
2493 | ||
d324faf7 | 2494 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2495 | /* This is not the session we are looking for */ |
c2da8cde DG |
2496 | ret = -LTTNG_ERR_NO_SESSION; |
2497 | goto error; | |
dcf266c0 JG |
2498 | } |
2499 | ||
2500 | /* Init domains to create the session handles */ | |
2501 | for (node = xmlFirstElementChild(domains_node); node; | |
2502 | node = xmlNextElementSibling(node)) { | |
2503 | struct lttng_domain *domain; | |
2504 | ||
2505 | domain = zmalloc(sizeof(*domain)); | |
2506 | if (!domain) { | |
2507 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2508 | goto error; |
dcf266c0 JG |
2509 | } |
2510 | ||
2511 | ret = init_domain(node, domain); | |
2512 | if (ret) { | |
2513 | goto domain_init_error; | |
2514 | } | |
2515 | ||
2516 | switch (domain->type) { | |
2517 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2518 | if (kernel_domain) { |
2519 | /* Same domain seen twice, invalid! */ | |
2520 | goto domain_init_error; | |
2521 | } | |
dcf266c0 JG |
2522 | kernel_domain = domain; |
2523 | break; | |
2524 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2525 | if (ust_domain) { |
2526 | /* Same domain seen twice, invalid! */ | |
2527 | goto domain_init_error; | |
2528 | } | |
dcf266c0 JG |
2529 | ust_domain = domain; |
2530 | break; | |
2531 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2532 | if (jul_domain) { |
2533 | /* Same domain seen twice, invalid! */ | |
2534 | goto domain_init_error; | |
2535 | } | |
dcf266c0 JG |
2536 | jul_domain = domain; |
2537 | break; | |
5cdb6027 DG |
2538 | case LTTNG_DOMAIN_LOG4J: |
2539 | if (log4j_domain) { | |
2540 | /* Same domain seen twice, invalid! */ | |
2541 | goto domain_init_error; | |
2542 | } | |
2543 | log4j_domain = domain; | |
2544 | break; | |
0e115563 DG |
2545 | case LTTNG_DOMAIN_PYTHON: |
2546 | if (python_domain) { | |
2547 | /* Same domain seen twice, invalid! */ | |
2548 | goto domain_init_error; | |
2549 | } | |
2550 | python_domain = domain; | |
2551 | break; | |
dcf266c0 JG |
2552 | default: |
2553 | WARN("Invalid domain type"); | |
2554 | goto domain_init_error; | |
2555 | } | |
2556 | continue; | |
2557 | domain_init_error: | |
2558 | free(domain); | |
2559 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2560 | goto error; |
dcf266c0 JG |
2561 | } |
2562 | ||
2563 | if (override) { | |
2564 | /* Destroy session if it exists */ | |
d324faf7 | 2565 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2566 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2567 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2568 | goto error; |
dcf266c0 JG |
2569 | } |
2570 | } | |
2571 | ||
2572 | /* Create session type depending on output type */ | |
2573 | if (snapshot_mode && snapshot_mode != -1) { | |
d324faf7 | 2574 | ret = create_snapshot_session((const char *) name, output_node); |
dcf266c0 JG |
2575 | } else if (live_timer_interval && |
2576 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2577 | ret = create_session((const char *) name, kernel_domain, |
2578 | ust_domain, jul_domain, log4j_domain, | |
2579 | output_node, live_timer_interval); | |
dcf266c0 JG |
2580 | } else { |
2581 | /* regular session */ | |
d324faf7 JG |
2582 | ret = create_session((const char *) name, kernel_domain, |
2583 | ust_domain, jul_domain, log4j_domain, | |
2584 | output_node, UINT64_MAX); | |
dcf266c0 | 2585 | } |
dcf266c0 | 2586 | if (ret) { |
c2da8cde | 2587 | goto error; |
dcf266c0 JG |
2588 | } |
2589 | ||
9e7c9f56 JR |
2590 | if (shm_path) { |
2591 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2592 | (const char *) shm_path); |
9e7c9f56 JR |
2593 | if (ret) { |
2594 | goto error; | |
2595 | } | |
2596 | } | |
2597 | ||
dcf266c0 JG |
2598 | for (node = xmlFirstElementChild(domains_node); node; |
2599 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2600 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2601 | if (ret) { |
2602 | goto end; | |
2603 | } | |
2604 | } | |
2605 | ||
2606 | if (started) { | |
d324faf7 | 2607 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2608 | if (ret) { |
2609 | goto end; | |
2610 | } | |
2611 | } | |
c2da8cde | 2612 | |
dcf266c0 | 2613 | end: |
b2579dc1 | 2614 | if (ret < 0) { |
d324faf7 JG |
2615 | ERR("Failed to load session %s: %s", (const char *) name, |
2616 | lttng_strerror(ret)); | |
2617 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2618 | } |
2619 | ||
c2da8cde | 2620 | error: |
dcf266c0 JG |
2621 | free(kernel_domain); |
2622 | free(ust_domain); | |
2623 | free(jul_domain); | |
5cdb6027 | 2624 | free(log4j_domain); |
135a3893 | 2625 | free(python_domain); |
d324faf7 | 2626 | xmlFree(name); |
9e7c9f56 | 2627 | xmlFree(shm_path); |
dcf266c0 JG |
2628 | return ret; |
2629 | } | |
2630 | ||
cf53c06d DG |
2631 | /* |
2632 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2633 | * Return -1 if the path is EPERM. | |
2634 | */ | |
2635 | static int validate_file_read_creds(const char *path) | |
2636 | { | |
2637 | int ret; | |
2638 | ||
2639 | assert(path); | |
2640 | ||
2641 | /* Can we read the file. */ | |
2642 | ret = access(path, R_OK); | |
2643 | if (!ret) { | |
2644 | goto valid; | |
2645 | } | |
2646 | if (errno == EACCES) { | |
2647 | return -1; | |
2648 | } else { | |
2649 | /* Invalid. */ | |
2650 | return 0; | |
2651 | } | |
2652 | valid: | |
2653 | return 1; | |
2654 | } | |
2655 | ||
dcf266c0 JG |
2656 | static |
2657 | int load_session_from_file(const char *path, const char *session_name, | |
2658 | struct session_config_validation_ctx *validation_ctx, int override) | |
2659 | { | |
2660 | int ret, session_found = !session_name; | |
2661 | xmlDocPtr doc = NULL; | |
2662 | xmlNodePtr sessions_node; | |
2663 | xmlNodePtr session_node; | |
dcf266c0 JG |
2664 | |
2665 | assert(path); | |
2666 | assert(validation_ctx); | |
2667 | ||
cf53c06d DG |
2668 | ret = validate_file_read_creds(path); |
2669 | if (ret != 1) { | |
2670 | if (ret == -1) { | |
2671 | ret = -LTTNG_ERR_EPERM; | |
2672 | } else { | |
2673 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2674 | } | |
dcf266c0 JG |
2675 | goto end; |
2676 | } | |
2677 | ||
2678 | doc = xmlParseFile(path); | |
2679 | if (!doc) { | |
2680 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2681 | goto end; | |
2682 | } | |
2683 | ||
2684 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2685 | if (ret) { | |
2686 | ERR("Session configuration file validation failed"); | |
2687 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2688 | goto end; | |
2689 | } | |
2690 | ||
2691 | sessions_node = xmlDocGetRootElement(doc); | |
2692 | if (!sessions_node) { | |
2693 | goto end; | |
2694 | } | |
2695 | ||
2696 | for (session_node = xmlFirstElementChild(sessions_node); | |
2697 | session_node; session_node = | |
2698 | xmlNextElementSibling(session_node)) { | |
2699 | ret = process_session_node(session_node, | |
2700 | session_name, override); | |
2701 | if (session_name && ret == 0) { | |
2702 | /* Target session found and loaded */ | |
2703 | session_found = 1; | |
2704 | break; | |
2705 | } | |
2706 | } | |
2707 | end: | |
2708 | xmlFreeDoc(doc); | |
2709 | if (!ret) { | |
a96bc65d | 2710 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2711 | } |
2712 | return ret; | |
2713 | } | |
2714 | ||
60f70355 JG |
2715 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2716 | static | |
2717 | struct dirent *alloc_dirent(const char *path) | |
2718 | { | |
2719 | size_t len; | |
2720 | long name_max; | |
2721 | struct dirent *entry; | |
2722 | ||
2723 | name_max = pathconf(path, _PC_NAME_MAX); | |
2724 | if (name_max == -1) { | |
2725 | name_max = PATH_MAX; | |
2726 | } | |
2727 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2728 | entry = zmalloc(len); | |
2729 | return entry; | |
2730 | } | |
2731 | ||
dcf266c0 JG |
2732 | static |
2733 | int load_session_from_path(const char *path, const char *session_name, | |
2734 | struct session_config_validation_ctx *validation_ctx, int override) | |
2735 | { | |
2736 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2737 | DIR *directory = NULL; |
2738 | ||
2739 | assert(path); | |
2740 | assert(validation_ctx); | |
2741 | ||
4af16958 DG |
2742 | directory = opendir(path); |
2743 | if (!directory) { | |
11143783 DG |
2744 | switch (errno) { |
2745 | case ENOTDIR: | |
0f0a81b5 DG |
2746 | /* Try the file loading. */ |
2747 | break; | |
11143783 DG |
2748 | case ENOENT: |
2749 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2750 | goto end; | |
2751 | default: | |
0f0a81b5 DG |
2752 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2753 | goto end; | |
4af16958 | 2754 | } |
dcf266c0 | 2755 | } |
4af16958 | 2756 | if (directory) { |
dcf266c0 JG |
2757 | struct dirent *entry; |
2758 | struct dirent *result; | |
2759 | char *file_path = NULL; | |
2760 | size_t path_len = strlen(path); | |
2761 | ||
2762 | if (path_len >= PATH_MAX) { | |
2763 | ret = -LTTNG_ERR_INVALID; | |
2764 | goto end; | |
2765 | } | |
2766 | ||
60f70355 | 2767 | entry = alloc_dirent(path); |
dcf266c0 JG |
2768 | if (!entry) { |
2769 | ret = -LTTNG_ERR_NOMEM; | |
2770 | goto end; | |
2771 | } | |
2772 | ||
dcf266c0 JG |
2773 | file_path = zmalloc(PATH_MAX); |
2774 | if (!file_path) { | |
2775 | ret = -LTTNG_ERR_NOMEM; | |
2776 | free(entry); | |
2777 | goto end; | |
2778 | } | |
2779 | ||
2780 | strncpy(file_path, path, path_len); | |
2781 | if (file_path[path_len - 1] != '/') { | |
2782 | file_path[path_len++] = '/'; | |
2783 | } | |
2784 | ||
4af16958 | 2785 | ret = 0; |
dcf266c0 JG |
2786 | /* Search for *.lttng files */ |
2787 | while (!readdir_r(directory, entry, &result) && result) { | |
2788 | size_t file_name_len = strlen(result->d_name); | |
2789 | ||
2790 | if (file_name_len <= | |
2791 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
2792 | continue; | |
2793 | } | |
2794 | ||
431f702e | 2795 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
2796 | continue; |
2797 | } | |
2798 | ||
2799 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
2800 | result->d_name + file_name_len - sizeof( | |
2801 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
2802 | continue; | |
2803 | } | |
2804 | ||
2805 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
2806 | file_path[path_len + file_name_len] = '\0'; | |
2807 | ||
2808 | ret = load_session_from_file(file_path, session_name, | |
2809 | validation_ctx, override); | |
2810 | if (session_name && !ret) { | |
2811 | session_found = 1; | |
2812 | break; | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | free(entry); | |
2817 | free(file_path); | |
2818 | } else { | |
2819 | ret = load_session_from_file(path, session_name, | |
2820 | validation_ctx, override); | |
2821 | if (ret) { | |
2822 | goto end; | |
2823 | } else { | |
2824 | session_found = 1; | |
2825 | } | |
2826 | } | |
2827 | ||
2828 | end: | |
2829 | if (directory) { | |
2830 | if (closedir(directory)) { | |
2831 | PERROR("closedir"); | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | if (!session_found) { | |
a96bc65d | 2836 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2837 | } |
2838 | ||
2839 | return ret; | |
2840 | } | |
2841 | ||
ab38c13f DG |
2842 | /* |
2843 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 2844 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
2845 | */ |
2846 | static int validate_path_creds(const char *path) | |
2847 | { | |
2848 | int ret, uid = getuid(); | |
2849 | struct stat buf; | |
2850 | ||
2851 | assert(path); | |
2852 | ||
cf53c06d | 2853 | if (uid == 0) { |
ab38c13f DG |
2854 | goto valid; |
2855 | } | |
2856 | ||
2857 | ret = stat(path, &buf); | |
2858 | if (ret < 0) { | |
2859 | if (errno != ENOENT) { | |
2860 | PERROR("stat"); | |
2861 | } | |
2862 | ret = -LTTNG_ERR_INVALID; | |
2863 | goto valid; | |
2864 | } | |
2865 | ||
2866 | if (buf.st_uid != uid) { | |
2867 | goto invalid; | |
2868 | } | |
2869 | ||
2870 | valid: | |
ab38c13f | 2871 | return 1; |
cf53c06d DG |
2872 | invalid: |
2873 | return 0; | |
ab38c13f DG |
2874 | } |
2875 | ||
dcf266c0 JG |
2876 | LTTNG_HIDDEN |
2877 | int config_load_session(const char *path, const char *session_name, | |
ab38c13f | 2878 | int override, unsigned int autoload) |
dcf266c0 JG |
2879 | { |
2880 | int ret; | |
cf53c06d | 2881 | const char *path_ptr = NULL; |
dcf266c0 JG |
2882 | struct session_config_validation_ctx validation_ctx = { 0 }; |
2883 | ||
2884 | ret = init_session_config_validation_ctx(&validation_ctx); | |
2885 | if (ret) { | |
2886 | goto end; | |
2887 | } | |
2888 | ||
2889 | if (!path) { | |
ab38c13f DG |
2890 | char *home_path; |
2891 | const char *sys_path; | |
2892 | ||
dcf266c0 | 2893 | /* Try home path */ |
ab38c13f | 2894 | home_path = utils_get_home_dir(); |
dcf266c0 | 2895 | if (home_path) { |
ab38c13f | 2896 | char path[PATH_MAX]; |
dcf266c0 | 2897 | |
d4fcf703 DG |
2898 | /* |
2899 | * Try user session configuration path. Ignore error here so we can | |
2900 | * continue loading the system wide sessions. | |
2901 | */ | |
ab38c13f DG |
2902 | if (autoload) { |
2903 | ret = snprintf(path, sizeof(path), | |
2904 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
2905 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
2906 | if (ret < 0) { |
2907 | PERROR("snprintf session autoload home config path"); | |
2908 | goto end; | |
2909 | } | |
2910 | ||
2911 | /* | |
2912 | * Credentials are only validated for the autoload in order to | |
2913 | * avoid any user session daemon to try to load kernel sessions | |
2914 | * automatically and failing all the times. | |
2915 | */ | |
2916 | ret = validate_path_creds(path); | |
2917 | if (ret) { | |
2918 | path_ptr = path; | |
2919 | } | |
ab38c13f DG |
2920 | } else { |
2921 | ret = snprintf(path, sizeof(path), | |
2922 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
2923 | if (ret < 0) { |
2924 | PERROR("snprintf session home config path"); | |
2925 | goto end; | |
2926 | } | |
2927 | path_ptr = path; | |
ab38c13f | 2928 | } |
cf53c06d DG |
2929 | if (path_ptr) { |
2930 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 DG |
2931 | &validation_ctx, override); |
2932 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
2933 | goto end; | |
2934 | } | |
2935 | /* | |
2936 | * Continue even if the session was found since we have to try | |
2937 | * the system wide sessions. | |
2938 | */ | |
ab38c13f | 2939 | } |
d4fcf703 | 2940 | } |
ab38c13f | 2941 | |
cf53c06d DG |
2942 | /* Reset path pointer for the system wide dir. */ |
2943 | path_ptr = NULL; | |
2944 | ||
d4fcf703 DG |
2945 | /* Try system wide configuration directory. */ |
2946 | if (autoload) { | |
2947 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
2948 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
2949 | ret = validate_path_creds(sys_path); |
2950 | if (ret) { | |
2951 | path_ptr = sys_path; | |
2952 | } | |
d4fcf703 | 2953 | } else { |
cf53c06d DG |
2954 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
2955 | path_ptr = sys_path; | |
d4fcf703 DG |
2956 | } |
2957 | ||
cf53c06d DG |
2958 | if (path_ptr) { |
2959 | ret = load_session_from_path(path_ptr, session_name, | |
d4fcf703 | 2960 | &validation_ctx, override); |
dcf266c0 JG |
2961 | } |
2962 | } else { | |
2963 | ret = access(path, F_OK); | |
2964 | if (ret < 0) { | |
2965 | PERROR("access"); | |
2966 | switch (errno) { | |
2967 | case ENOENT: | |
2968 | ret = -LTTNG_ERR_INVALID; | |
2969 | WARN("Session configuration path does not exist."); | |
2970 | break; | |
2971 | case EACCES: | |
2972 | ret = -LTTNG_ERR_EPERM; | |
2973 | break; | |
2974 | default: | |
2975 | ret = -LTTNG_ERR_UNK; | |
2976 | break; | |
2977 | } | |
2978 | goto end; | |
2979 | } | |
2980 | ||
2981 | ret = load_session_from_path(path, session_name, | |
2982 | &validation_ctx, override); | |
2983 | } | |
2984 | end: | |
2985 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
2986 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
2987 | /* | |
2988 | * Don't report an error if no sessions are found when called | |
2989 | * without a session_name or a search path. | |
2990 | */ | |
2991 | ret = 0; | |
2992 | } | |
dcf266c0 JG |
2993 | return ret; |
2994 | } |