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> | |
6c66fa0f | 29 | #include <stdbool.h> |
1501a7f3 JG |
30 | |
31 | #include <common/defaults.h> | |
32 | #include <common/error.h> | |
33 | #include <common/macros.h> | |
34 | #include <common/utils.h> | |
cce35f91 | 35 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 36 | #include <common/compat/getenv.h> |
fb198a11 JG |
37 | #include <lttng/lttng-error.h> |
38 | #include <libxml/parser.h> | |
39 | #include <libxml/valid.h> | |
40 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
41 | #include <libxml/tree.h> |
42 | #include <lttng/lttng.h> | |
43 | #include <lttng/snapshot.h> | |
259c2674 | 44 | #include <lttng/rotation.h> |
1501a7f3 | 45 | |
f40ef1d5 | 46 | #include "session-config.h" |
36f2332b | 47 | #include "config-internal.h" |
1501a7f3 JG |
48 | |
49 | struct handler_filter_args { | |
50 | const char* section; | |
51 | config_entry_handler_cb handler; | |
52 | void *user_data; | |
53 | }; | |
54 | ||
dcf266c0 JG |
55 | struct session_config_validation_ctx { |
56 | xmlSchemaParserCtxtPtr parser_ctx; | |
57 | xmlSchemaPtr schema; | |
58 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
59 | }; | |
60 | ||
96518a56 | 61 | const char * const config_element_all = "all"; |
1501a7f3 JG |
62 | const char * const config_str_yes = "yes"; |
63 | const char * const config_str_true = "true"; | |
64 | const char * const config_str_on = "on"; | |
65 | const char * const config_str_no = "no"; | |
66 | const char * const config_str_false = "false"; | |
67 | const char * const config_str_off = "off"; | |
36f2332b | 68 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 69 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
70 | const char * const config_xml_indent_string = "\t"; |
71 | const char * const config_xml_true = "true"; | |
72 | const char * const config_xml_false = "false"; | |
1501a7f3 | 73 | |
fb198a11 JG |
74 | const char * const config_element_channel = "channel"; |
75 | const char * const config_element_channels = "channels"; | |
76 | const char * const config_element_domain = "domain"; | |
77 | const char * const config_element_domains = "domains"; | |
78 | const char * const config_element_event = "event"; | |
79 | const char * const config_element_events = "events"; | |
80 | const char * const config_element_context = "context"; | |
81 | const char * const config_element_contexts = "contexts"; | |
82 | const char * const config_element_attributes = "attributes"; | |
83 | const char * const config_element_exclusion = "exclusion"; | |
84 | const char * const config_element_exclusions = "exclusions"; | |
85 | const char * const config_element_function_attributes = "function_attributes"; | |
86 | const char * const config_element_probe_attributes = "probe_attributes"; | |
87 | const char * const config_element_symbol_name = "symbol_name"; | |
88 | const char * const config_element_address = "address"; | |
89 | const char * const config_element_offset = "offset"; | |
fb198a11 JG |
90 | const char * const config_element_enabled = "enabled"; |
91 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
92 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
93 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
94 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
95 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
96 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
97 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
98 | const char * const config_element_output = "output"; |
99 | const char * const config_element_output_type = "output_type"; | |
100 | const char * const config_element_tracefile_size = "tracefile_size"; | |
101 | const char * const config_element_tracefile_count = "tracefile_count"; | |
102 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
103 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
104 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
105 | const char * const config_element_type = "type"; |
106 | const char * const config_element_buffer_type = "buffer_type"; | |
107 | const char * const config_element_session = "session"; | |
108 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
109 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
110 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
111 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
112 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
113 | const char * const config_element_config = "config"; |
114 | const char * const config_element_started = "started"; | |
115 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
116 | const char * const config_element_loglevel = "loglevel"; | |
117 | const char * const config_element_loglevel_type = "loglevel_type"; | |
118 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 119 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
120 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
121 | const char * const config_element_consumer_output = "consumer_output"; | |
122 | const char * const config_element_destination = "destination"; | |
123 | const char * const config_element_path = "path"; | |
124 | const char * const config_element_net_output = "net_output"; | |
125 | const char * const config_element_control_uri = "control_uri"; | |
126 | const char * const config_element_data_uri = "data_uri"; | |
127 | const char * const config_element_max_size = "max_size"; | |
ccf10263 | 128 | const char * const config_element_pid = "pid"; |
96518a56 | 129 | const char * const config_element_id = "id"; |
ccf10263 | 130 | const char * const config_element_pids = "pids"; |
96518a56 | 131 | const char * const config_element_name = "name"; |
9e7c9f56 | 132 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 | 133 | const char * const config_element_pid_tracker = "pid_tracker"; |
96518a56 MD |
134 | const char * const config_element_vpid_tracker = "vpid_tracker"; |
135 | const char * const config_element_uid_tracker = "uid_tracker"; | |
136 | const char * const config_element_vuid_tracker = "vuid_tracker"; | |
137 | const char * const config_element_gid_tracker = "gid_tracker"; | |
138 | const char * const config_element_vgid_tracker = "vgid_tracker"; | |
ebbf5ab7 | 139 | const char * const config_element_trackers = "trackers"; |
847a5916 | 140 | const char * const config_element_targets = "targets"; |
96518a56 | 141 | const char * const config_element_target_type = "target_type"; |
847a5916 | 142 | const char * const config_element_target_pid = "pid_target"; |
96518a56 MD |
143 | const char * const config_element_target_vpid = "vpid_target"; |
144 | const char * const config_element_target_uid = "uid_target"; | |
145 | const char * const config_element_target_vuid = "vuid_target"; | |
146 | const char * const config_element_target_gid = "gid_target"; | |
147 | const char * const config_element_target_vgid = "vgid_target"; | |
148 | const char * const config_element_tracker_type = "tracker_type"; | |
fb198a11 | 149 | |
259c2674 | 150 | LTTNG_HIDDEN const char * const config_element_rotation_timer_interval = "rotation_schedule_timer_period"; |
329f3443 | 151 | LTTNG_HIDDEN const char * const config_element_rotation_size = "rotation_schedule_size"; |
259c2674 JD |
152 | LTTNG_HIDDEN const char * const config_element_rotation_schedule = "rotation_schedule"; |
153 | ||
fb198a11 JG |
154 | const char * const config_domain_type_kernel = "KERNEL"; |
155 | const char * const config_domain_type_ust = "UST"; | |
156 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 157 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 158 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
159 | |
160 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
161 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
162 | const char * const config_buffer_type_global = "GLOBAL"; | |
163 | ||
164 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
165 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
166 | ||
167 | const char * const config_output_type_splice = "SPLICE"; | |
168 | const char * const config_output_type_mmap = "MMAP"; | |
169 | ||
170 | const char * const config_loglevel_type_all = "ALL"; | |
171 | const char * const config_loglevel_type_range = "RANGE"; | |
172 | const char * const config_loglevel_type_single = "SINGLE"; | |
173 | ||
174 | const char * const config_event_type_all = "ALL"; | |
175 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
176 | const char * const config_event_type_probe = "PROBE"; | |
177 | const char * const config_event_type_function = "FUNCTION"; | |
178 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
179 | const char * const config_event_type_noop = "NOOP"; | |
180 | const char * const config_event_type_syscall = "SYSCALL"; | |
181 | const char * const config_event_type_kprobe = "KPROBE"; | |
182 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
183 | ||
184 | const char * const config_event_context_pid = "PID"; | |
185 | const char * const config_event_context_procname = "PROCNAME"; | |
186 | const char * const config_event_context_prio = "PRIO"; | |
187 | const char * const config_event_context_nice = "NICE"; | |
188 | const char * const config_event_context_vpid = "VPID"; | |
189 | const char * const config_event_context_tid = "TID"; | |
190 | const char * const config_event_context_vtid = "VTID"; | |
191 | const char * const config_event_context_ppid = "PPID"; | |
192 | const char * const config_event_context_vppid = "VPPID"; | |
193 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
194 | const char * const config_event_context_hostname = "HOSTNAME"; | |
195 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 196 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
197 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
198 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
199 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
200 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
201 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
fb198a11 | 202 | |
fbd987c9 JG |
203 | /* Deprecated symbols */ |
204 | const char * const config_element_perf; | |
205 | ||
d7b645e2 JR |
206 | enum process_event_node_phase { |
207 | CREATION = 0, | |
208 | ENABLE = 1, | |
209 | }; | |
210 | ||
dcf266c0 JG |
211 | struct consumer_output { |
212 | int enabled; | |
213 | char *path; | |
214 | char *control_uri; | |
215 | char *data_uri; | |
216 | }; | |
217 | ||
1501a7f3 JG |
218 | static int config_entry_handler_filter(struct handler_filter_args *args, |
219 | const char *section, const char *name, const char *value) | |
220 | { | |
221 | int ret = 0; | |
222 | struct config_entry entry = { section, name, value }; | |
223 | ||
224 | assert(args); | |
225 | ||
226 | if (!section || !name || !value) { | |
227 | ret = -EIO; | |
228 | goto end; | |
229 | } | |
230 | ||
231 | if (args->section) { | |
232 | if (strcmp(args->section, section)) { | |
233 | goto end; | |
234 | } | |
235 | } | |
236 | ||
237 | ret = args->handler(&entry, args->user_data); | |
238 | end: | |
239 | return ret; | |
240 | } | |
241 | ||
242 | LTTNG_HIDDEN | |
243 | int config_get_section_entries(const char *override_path, const char *section, | |
244 | config_entry_handler_cb handler, void *user_data) | |
245 | { | |
246 | int ret = 0; | |
7ab02a27 | 247 | char *path; |
1501a7f3 JG |
248 | FILE *config_file = NULL; |
249 | struct handler_filter_args filter = { section, handler, user_data }; | |
250 | ||
7ab02a27 DG |
251 | /* First, try system-wide conf. file. */ |
252 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
253 | ||
254 | config_file = fopen(path, "r"); | |
255 | if (config_file) { | |
256 | DBG("Loading daemon conf file at %s", path); | |
257 | /* | |
258 | * Return value is not very important here since error or not, we | |
259 | * continue and try the next possible conf. file. | |
260 | */ | |
261 | (void) ini_parse_file(config_file, | |
262 | (ini_entry_handler) config_entry_handler_filter, | |
263 | (void *) &filter); | |
264 | fclose(config_file); | |
265 | } | |
266 | ||
267 | /* Second is the user local configuration. */ | |
268 | path = utils_get_home_dir(); | |
269 | if (path) { | |
270 | char fullpath[PATH_MAX]; | |
271 | ||
272 | ret = snprintf(fullpath, sizeof(fullpath), | |
273 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
274 | if (ret < 0) { | |
275 | PERROR("snprintf user conf. path"); | |
276 | goto error; | |
277 | } | |
278 | ||
279 | config_file = fopen(fullpath, "r"); | |
280 | if (config_file) { | |
281 | DBG("Loading daemon user conf file at %s", path); | |
282 | /* | |
283 | * Return value is not very important here since error or not, we | |
284 | * continue and try the next possible conf. file. | |
285 | */ | |
286 | (void) ini_parse_file(config_file, | |
287 | (ini_entry_handler) config_entry_handler_filter, | |
288 | (void *) &filter); | |
289 | fclose(config_file); | |
290 | } | |
291 | } | |
292 | ||
293 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
294 | if (override_path) { |
295 | config_file = fopen(override_path, "r"); | |
296 | if (config_file) { | |
7ab02a27 DG |
297 | DBG("Loading daemon command line conf file at %s", override_path); |
298 | (void) ini_parse_file(config_file, | |
299 | (ini_entry_handler) config_entry_handler_filter, | |
300 | (void *) &filter); | |
301 | fclose(config_file); | |
1501a7f3 JG |
302 | } else { |
303 | ERR("Failed to open daemon configuration file at %s", | |
304 | override_path); | |
305 | ret = -ENOENT; | |
7ab02a27 | 306 | goto error; |
1501a7f3 JG |
307 | } |
308 | } | |
309 | ||
7ab02a27 DG |
310 | /* Everything went well. */ |
311 | ret = 0; | |
1501a7f3 | 312 | |
7ab02a27 | 313 | error: |
1501a7f3 JG |
314 | return ret; |
315 | } | |
316 | ||
317 | LTTNG_HIDDEN | |
318 | int config_parse_value(const char *value) | |
319 | { | |
320 | int i, ret = 0; | |
321 | char *endptr, *lower_str; | |
322 | size_t len; | |
323 | unsigned long v; | |
324 | ||
325 | len = strlen(value); | |
326 | if (!len) { | |
327 | ret = -1; | |
328 | goto end; | |
329 | } | |
330 | ||
331 | v = strtoul(value, &endptr, 10); | |
332 | if (endptr != value) { | |
333 | ret = v; | |
334 | goto end; | |
335 | } | |
336 | ||
337 | lower_str = zmalloc(len + 1); | |
338 | if (!lower_str) { | |
339 | PERROR("zmalloc"); | |
340 | ret = -errno; | |
341 | goto end; | |
342 | } | |
343 | ||
344 | for (i = 0; i < len; i++) { | |
345 | lower_str[i] = tolower(value[i]); | |
346 | } | |
347 | ||
348 | if (!strcmp(lower_str, config_str_yes) || | |
349 | !strcmp(lower_str, config_str_true) || | |
350 | !strcmp(lower_str, config_str_on)) { | |
351 | ret = 1; | |
352 | } else if (!strcmp(lower_str, config_str_no) || | |
353 | !strcmp(lower_str, config_str_false) || | |
354 | !strcmp(lower_str, config_str_off)) { | |
355 | ret = 0; | |
356 | } else { | |
357 | ret = -1; | |
358 | } | |
359 | ||
360 | free(lower_str); | |
361 | end: | |
362 | return ret; | |
363 | } | |
36f2332b JG |
364 | |
365 | /* | |
366 | * Returns a xmlChar string which must be released using xmlFree(). | |
367 | */ | |
368 | static xmlChar *encode_string(const char *in_str) | |
369 | { | |
370 | xmlChar *out_str = NULL; | |
371 | xmlCharEncodingHandlerPtr handler; | |
372 | int out_len, ret, in_len; | |
373 | ||
374 | assert(in_str); | |
375 | ||
376 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
377 | if (!handler) { | |
378 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
379 | goto end; | |
380 | } | |
381 | ||
382 | in_len = strlen(in_str); | |
383 | /* | |
f76d886f JG |
384 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
385 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 386 | */ |
f76d886f | 387 | out_len = (in_len * 4) + 1; |
36f2332b JG |
388 | out_str = xmlMalloc(out_len); |
389 | if (!out_str) { | |
390 | goto end; | |
391 | } | |
392 | ||
393 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
394 | if (ret < 0) { | |
395 | xmlFree(out_str); | |
396 | out_str = NULL; | |
397 | goto end; | |
398 | } | |
399 | ||
400 | /* out_len is now the size of out_str */ | |
401 | out_str[out_len] = '\0'; | |
402 | end: | |
403 | return out_str; | |
404 | } | |
405 | ||
406 | LTTNG_HIDDEN | |
705bb62f | 407 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
408 | { |
409 | int ret; | |
410 | struct config_writer *writer; | |
411 | xmlOutputBufferPtr buffer; | |
412 | ||
413 | writer = zmalloc(sizeof(struct config_writer)); | |
414 | if (!writer) { | |
415 | PERROR("zmalloc config_writer_create"); | |
416 | goto end; | |
417 | } | |
418 | ||
419 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
420 | if (!buffer) { | |
421 | goto error_destroy; | |
422 | } | |
423 | ||
424 | writer->writer = xmlNewTextWriter(buffer); | |
425 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
426 | config_xml_encoding, NULL); | |
427 | if (ret < 0) { | |
428 | goto error_destroy; | |
429 | } | |
430 | ||
431 | ret = xmlTextWriterSetIndentString(writer->writer, | |
432 | BAD_CAST config_xml_indent_string); | |
705bb62f | 433 | if (ret) { |
36f2332b JG |
434 | goto error_destroy; |
435 | } | |
436 | ||
705bb62f JRJ |
437 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
438 | if (ret) { | |
36f2332b JG |
439 | goto error_destroy; |
440 | } | |
441 | ||
442 | end: | |
443 | return writer; | |
444 | error_destroy: | |
445 | config_writer_destroy(writer); | |
446 | return NULL; | |
447 | } | |
448 | ||
449 | LTTNG_HIDDEN | |
450 | int config_writer_destroy(struct config_writer *writer) | |
451 | { | |
452 | int ret = 0; | |
453 | ||
454 | if (!writer) { | |
455 | ret = -EINVAL; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
460 | WARN("Could not close XML document"); | |
461 | ret = -EIO; | |
462 | } | |
463 | ||
464 | if (writer->writer) { | |
465 | xmlFreeTextWriter(writer->writer); | |
466 | } | |
467 | ||
468 | free(writer); | |
469 | end: | |
470 | return ret; | |
471 | } | |
472 | ||
473 | LTTNG_HIDDEN | |
474 | int config_writer_open_element(struct config_writer *writer, | |
475 | const char *element_name) | |
476 | { | |
477 | int ret; | |
478 | xmlChar *encoded_element_name; | |
479 | ||
480 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
481 | ret = -1; | |
482 | goto end; | |
483 | } | |
484 | ||
485 | encoded_element_name = encode_string(element_name); | |
486 | if (!encoded_element_name) { | |
487 | ret = -1; | |
488 | goto end; | |
489 | } | |
490 | ||
491 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
492 | xmlFree(encoded_element_name); | |
493 | end: | |
28676a1d | 494 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
495 | } |
496 | ||
e10b6a1c JG |
497 | LTTNG_HIDDEN |
498 | int config_writer_write_attribute(struct config_writer *writer, | |
499 | const char *name, const char *value) | |
500 | { | |
501 | int ret; | |
502 | xmlChar *encoded_name = NULL; | |
503 | xmlChar *encoded_value = NULL; | |
504 | ||
505 | if (!writer || !writer->writer || !name || !name[0]) { | |
506 | ret = -1; | |
507 | goto end; | |
508 | } | |
509 | ||
510 | encoded_name = encode_string(name); | |
511 | if (!encoded_name) { | |
512 | ret = -1; | |
513 | goto end; | |
514 | } | |
515 | ||
516 | encoded_value = encode_string(value); | |
517 | if (!encoded_value) { | |
518 | ret = -1; | |
519 | goto end; | |
520 | } | |
521 | ||
522 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
523 | encoded_value); | |
524 | end: | |
525 | xmlFree(encoded_name); | |
526 | xmlFree(encoded_value); | |
527 | return ret >= 0 ? 0 : ret; | |
528 | } | |
529 | ||
36f2332b JG |
530 | LTTNG_HIDDEN |
531 | int config_writer_close_element(struct config_writer *writer) | |
532 | { | |
533 | int ret; | |
534 | ||
535 | if (!writer || !writer->writer) { | |
536 | ret = -1; | |
537 | goto end; | |
538 | } | |
539 | ||
540 | ret = xmlTextWriterEndElement(writer->writer); | |
541 | end: | |
28676a1d | 542 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
543 | } |
544 | ||
545 | LTTNG_HIDDEN | |
546 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
547 | const char *element_name, uint64_t value) | |
548 | { | |
549 | int ret; | |
550 | xmlChar *encoded_element_name; | |
551 | ||
552 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
553 | ret = -1; | |
554 | goto end; | |
555 | } | |
556 | ||
557 | encoded_element_name = encode_string(element_name); | |
558 | if (!encoded_element_name) { | |
559 | ret = -1; | |
560 | goto end; | |
561 | } | |
562 | ||
563 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
564 | encoded_element_name, "%" PRIu64, value); | |
565 | xmlFree(encoded_element_name); | |
566 | end: | |
28676a1d | 567 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
568 | } |
569 | ||
570 | LTTNG_HIDDEN | |
571 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
572 | const char *element_name, int64_t value) | |
573 | { | |
574 | int ret; | |
575 | xmlChar *encoded_element_name; | |
576 | ||
577 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
578 | ret = -1; | |
579 | goto end; | |
580 | } | |
581 | ||
582 | encoded_element_name = encode_string(element_name); | |
583 | if (!encoded_element_name) { | |
584 | ret = -1; | |
585 | goto end; | |
586 | } | |
587 | ||
588 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
589 | encoded_element_name, "%" PRIi64, value); | |
590 | xmlFree(encoded_element_name); | |
591 | end: | |
28676a1d | 592 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
593 | } |
594 | ||
595 | LTTNG_HIDDEN | |
596 | int config_writer_write_element_bool(struct config_writer *writer, | |
597 | const char *element_name, int value) | |
598 | { | |
599 | return config_writer_write_element_string(writer, element_name, | |
600 | value ? config_xml_true : config_xml_false); | |
601 | } | |
602 | ||
603 | LTTNG_HIDDEN | |
604 | int config_writer_write_element_string(struct config_writer *writer, | |
605 | const char *element_name, const char *value) | |
606 | { | |
607 | int ret; | |
608 | xmlChar *encoded_element_name = NULL; | |
609 | xmlChar *encoded_value = NULL; | |
610 | ||
611 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
612 | !value) { | |
613 | ret = -1; | |
614 | goto end; | |
615 | } | |
616 | ||
617 | encoded_element_name = encode_string(element_name); | |
618 | if (!encoded_element_name) { | |
619 | ret = -1; | |
620 | goto end; | |
621 | } | |
622 | ||
623 | encoded_value = encode_string(value); | |
624 | if (!encoded_value) { | |
625 | ret = -1; | |
626 | goto end; | |
627 | } | |
628 | ||
629 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 630 | encoded_value); |
36f2332b JG |
631 | end: |
632 | xmlFree(encoded_element_name); | |
633 | xmlFree(encoded_value); | |
28676a1d | 634 | return ret >= 0 ? 0 : ret; |
36f2332b | 635 | } |
dcf266c0 JG |
636 | |
637 | static | |
638 | void xml_error_handler(void *ctx, const char *format, ...) | |
639 | { | |
640 | char *errMsg; | |
641 | va_list args; | |
642 | int ret; | |
643 | ||
644 | va_start(args, format); | |
645 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 646 | va_end(args); |
dcf266c0 JG |
647 | if (ret == -1) { |
648 | ERR("String allocation failed in xml error handler"); | |
649 | return; | |
650 | } | |
dcf266c0 JG |
651 | |
652 | fprintf(stderr, "XML Error: %s", errMsg); | |
653 | free(errMsg); | |
654 | } | |
655 | ||
656 | static | |
657 | void fini_session_config_validation_ctx( | |
658 | struct session_config_validation_ctx *ctx) | |
659 | { | |
660 | if (ctx->parser_ctx) { | |
661 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
662 | } | |
663 | ||
664 | if (ctx->schema) { | |
665 | xmlSchemaFree(ctx->schema); | |
666 | } | |
667 | ||
668 | if (ctx->schema_validation_ctx) { | |
669 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
670 | } | |
671 | ||
672 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
673 | } | |
674 | ||
54e399cb JG |
675 | static |
676 | char *get_session_config_xsd_path() | |
677 | { | |
678 | char *xsd_path; | |
e8fa9fb0 | 679 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
680 | size_t base_path_len; |
681 | size_t max_path_len; | |
682 | ||
683 | if (!base_path) { | |
684 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
685 | } | |
686 | ||
687 | base_path_len = strlen(base_path); | |
688 | max_path_len = base_path_len + | |
689 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
690 | xsd_path = zmalloc(max_path_len); | |
691 | if (!xsd_path) { | |
692 | goto end; | |
693 | } | |
694 | ||
00a7f6f8 | 695 | strcpy(xsd_path, base_path); |
54e399cb JG |
696 | if (xsd_path[base_path_len - 1] != '/') { |
697 | xsd_path[base_path_len++] = '/'; | |
698 | } | |
699 | ||
00a7f6f8 | 700 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
701 | end: |
702 | return xsd_path; | |
703 | } | |
704 | ||
dcf266c0 JG |
705 | static |
706 | int init_session_config_validation_ctx( | |
707 | struct session_config_validation_ctx *ctx) | |
708 | { | |
709 | int ret; | |
54e399cb JG |
710 | char *xsd_path = get_session_config_xsd_path(); |
711 | ||
712 | if (!xsd_path) { | |
713 | ret = -LTTNG_ERR_NOMEM; | |
714 | goto end; | |
715 | } | |
dcf266c0 | 716 | |
54e399cb | 717 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
718 | if (!ctx->parser_ctx) { |
719 | ERR("XSD parser context creation failed"); | |
720 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
721 | goto end; | |
722 | } | |
723 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
724 | xml_error_handler, NULL); | |
725 | ||
726 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
727 | if (!ctx->schema) { | |
728 | ERR("XSD parsing failed"); | |
729 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
730 | goto end; | |
731 | } | |
732 | ||
733 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
734 | if (!ctx->schema_validation_ctx) { | |
735 | ERR("XSD validation context creation failed"); | |
736 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
737 | goto end; | |
738 | } | |
739 | ||
740 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
741 | xml_error_handler, NULL); | |
742 | ret = 0; | |
743 | ||
744 | end: | |
745 | if (ret) { | |
746 | fini_session_config_validation_ctx(ctx); | |
747 | } | |
748 | ||
54e399cb | 749 | free(xsd_path); |
dcf266c0 JG |
750 | return ret; |
751 | } | |
752 | ||
753 | static | |
754 | int parse_uint(xmlChar *str, uint64_t *val) | |
755 | { | |
756 | int ret; | |
757 | char *endptr; | |
758 | ||
759 | if (!str || !val) { | |
760 | ret = -1; | |
761 | goto end; | |
762 | } | |
763 | ||
764 | *val = strtoull((const char *) str, &endptr, 10); | |
765 | if (!endptr || *endptr) { | |
766 | ret = -1; | |
767 | } else { | |
768 | ret = 0; | |
769 | } | |
770 | ||
771 | end: | |
772 | return ret; | |
773 | } | |
774 | ||
775 | static | |
776 | int parse_int(xmlChar *str, int64_t *val) | |
777 | { | |
778 | int ret; | |
779 | char *endptr; | |
780 | ||
781 | if (!str || !val) { | |
782 | ret = -1; | |
783 | goto end; | |
784 | } | |
785 | ||
786 | *val = strtoll((const char *) str, &endptr, 10); | |
787 | if (!endptr || *endptr) { | |
788 | ret = -1; | |
789 | } else { | |
790 | ret = 0; | |
791 | } | |
792 | ||
793 | end: | |
794 | return ret; | |
795 | } | |
796 | ||
797 | static | |
798 | int parse_bool(xmlChar *str, int *val) | |
799 | { | |
800 | int ret = 0; | |
801 | ||
802 | if (!str || !val) { | |
803 | ret = -1; | |
804 | goto end; | |
805 | } | |
806 | ||
807 | if (!strcmp((const char *) str, config_xml_true)) { | |
808 | *val = 1; | |
809 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
810 | *val = 0; | |
811 | } else { | |
812 | WARN("Invalid boolean value encoutered (%s).", | |
813 | (const char *) str); | |
814 | ret = -1; | |
815 | } | |
816 | end: | |
817 | return ret; | |
818 | } | |
819 | ||
820 | static | |
821 | int get_domain_type(xmlChar *domain) | |
822 | { | |
823 | int ret; | |
824 | ||
825 | if (!domain) { | |
826 | goto error; | |
827 | } | |
828 | ||
829 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
830 | ret = LTTNG_DOMAIN_KERNEL; | |
831 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
832 | ret = LTTNG_DOMAIN_UST; | |
833 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
834 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
835 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
836 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
837 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
838 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
839 | } else { |
840 | goto error; | |
841 | } | |
842 | ||
843 | return ret; | |
844 | error: | |
845 | return -1; | |
846 | } | |
847 | ||
848 | static | |
849 | int get_buffer_type(xmlChar *buffer_type) | |
850 | { | |
851 | int ret; | |
852 | ||
853 | if (!buffer_type) { | |
854 | goto error; | |
855 | } | |
856 | ||
857 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
858 | ret = LTTNG_BUFFER_GLOBAL; | |
859 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
860 | ret = LTTNG_BUFFER_PER_UID; | |
861 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
862 | ret = LTTNG_BUFFER_PER_PID; | |
863 | } else { | |
864 | goto error; | |
865 | } | |
866 | ||
867 | return ret; | |
868 | error: | |
869 | return -1; | |
870 | } | |
871 | ||
872 | static | |
873 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
874 | { | |
875 | int ret; | |
876 | ||
877 | if (!overwrite_mode) { | |
878 | goto error; | |
879 | } | |
880 | ||
881 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
882 | ret = 1; | |
883 | } else if (!strcmp((char *) overwrite_mode, | |
884 | config_overwrite_mode_discard)) { | |
885 | ret = 0; | |
886 | } else { | |
887 | goto error; | |
888 | } | |
889 | ||
890 | return ret; | |
891 | error: | |
892 | return -1; | |
893 | } | |
894 | ||
895 | static | |
896 | int get_output_type(xmlChar *output_type) | |
897 | { | |
898 | int ret; | |
899 | ||
900 | if (!output_type) { | |
901 | goto error; | |
902 | } | |
903 | ||
904 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
905 | ret = LTTNG_EVENT_MMAP; | |
906 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
907 | ret = LTTNG_EVENT_SPLICE; | |
908 | } else { | |
909 | goto error; | |
910 | } | |
911 | ||
912 | return ret; | |
913 | error: | |
914 | return -1; | |
915 | } | |
916 | ||
917 | static | |
918 | int get_event_type(xmlChar *event_type) | |
919 | { | |
920 | int ret; | |
921 | ||
922 | if (!event_type) { | |
923 | goto error; | |
924 | } | |
925 | ||
926 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
927 | ret = LTTNG_EVENT_ALL; | |
928 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
929 | ret = LTTNG_EVENT_TRACEPOINT; | |
930 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
931 | ret = LTTNG_EVENT_PROBE; | |
932 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
933 | ret = LTTNG_EVENT_FUNCTION; | |
934 | } else if (!strcmp((char *) event_type, | |
935 | config_event_type_function_entry)) { | |
936 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
937 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
938 | ret = LTTNG_EVENT_NOOP; | |
939 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
940 | ret = LTTNG_EVENT_SYSCALL; | |
941 | } else { | |
942 | goto error; | |
943 | } | |
944 | ||
945 | return ret; | |
946 | error: | |
947 | return -1; | |
948 | } | |
949 | ||
950 | static | |
951 | int get_loglevel_type(xmlChar *loglevel_type) | |
952 | { | |
953 | int ret; | |
954 | ||
955 | if (!loglevel_type) { | |
956 | goto error; | |
957 | } | |
958 | ||
959 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
960 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
961 | } else if (!strcmp((char *) loglevel_type, | |
962 | config_loglevel_type_range)) { | |
963 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
964 | } else if (!strcmp((char *) loglevel_type, | |
965 | config_loglevel_type_single)) { | |
966 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
967 | } else { | |
968 | goto error; | |
969 | } | |
970 | ||
971 | return ret; | |
972 | error: | |
973 | return -1; | |
974 | } | |
975 | ||
976 | /* | |
977 | * Return the context type or -1 on error. | |
978 | */ | |
979 | static | |
980 | int get_context_type(xmlChar *context_type) | |
981 | { | |
982 | int ret; | |
983 | ||
984 | if (!context_type) { | |
985 | goto error; | |
986 | } | |
987 | ||
988 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
989 | ret = LTTNG_EVENT_CONTEXT_PID; | |
990 | } else if (!strcmp((char *) context_type, | |
991 | config_event_context_procname)) { | |
992 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
993 | } else if (!strcmp((char *) context_type, | |
994 | config_event_context_prio)) { | |
995 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
996 | } else if (!strcmp((char *) context_type, | |
997 | config_event_context_nice)) { | |
998 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
999 | } else if (!strcmp((char *) context_type, | |
1000 | config_event_context_vpid)) { | |
1001 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1002 | } else if (!strcmp((char *) context_type, | |
1003 | config_event_context_tid)) { | |
1004 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1005 | } else if (!strcmp((char *) context_type, | |
1006 | config_event_context_vtid)) { | |
1007 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1008 | } else if (!strcmp((char *) context_type, | |
1009 | config_event_context_ppid)) { | |
1010 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1011 | } else if (!strcmp((char *) context_type, | |
1012 | config_event_context_vppid)) { | |
1013 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1014 | } else if (!strcmp((char *) context_type, | |
1015 | config_event_context_pthread_id)) { | |
1016 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1017 | } else if (!strcmp((char *) context_type, | |
1018 | config_event_context_hostname)) { | |
1019 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1020 | } else if (!strcmp((char *) context_type, | |
1021 | config_event_context_ip)) { | |
1022 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1023 | } else if (!strcmp((char *) context_type, |
1024 | config_event_context_interruptible)) { | |
1025 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1026 | } else if (!strcmp((char *) context_type, | |
1027 | config_event_context_preemptible)) { | |
1028 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1029 | } else if (!strcmp((char *) context_type, | |
1030 | config_event_context_need_reschedule)) { | |
1031 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1032 | } else if (!strcmp((char *) context_type, | |
1033 | config_event_context_migratable)) { | |
1034 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
dcf266c0 JG |
1035 | } else { |
1036 | goto error; | |
1037 | } | |
1038 | ||
1039 | return ret; | |
1040 | error: | |
1041 | return -1; | |
1042 | } | |
1043 | ||
1044 | static | |
1045 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1046 | { | |
1047 | int ret; | |
1048 | xmlNodePtr node; | |
1049 | ||
1050 | for (node = xmlFirstElementChild(domain_node); node; | |
1051 | node = xmlNextElementSibling(node)) { | |
1052 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1053 | /* domain type */ | |
1054 | xmlChar *node_content = xmlNodeGetContent(node); | |
1055 | if (!node_content) { | |
1056 | ret = -LTTNG_ERR_NOMEM; | |
1057 | goto end; | |
1058 | } | |
1059 | ||
1060 | ret = get_domain_type(node_content); | |
1061 | free(node_content); | |
1062 | if (ret < 0) { | |
1063 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1064 | goto end; | |
1065 | } | |
1066 | ||
1067 | domain->type = ret; | |
1068 | } else if (!strcmp((const char *) node->name, | |
1069 | config_element_buffer_type)) { | |
1070 | /* buffer type */ | |
1071 | xmlChar *node_content = xmlNodeGetContent(node); | |
1072 | if (!node_content) { | |
1073 | ret = -LTTNG_ERR_NOMEM; | |
1074 | goto end; | |
1075 | } | |
1076 | ||
1077 | ret = get_buffer_type(node_content); | |
1078 | free(node_content); | |
1079 | if (ret < 0) { | |
1080 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1081 | goto end; | |
1082 | } | |
1083 | ||
1084 | domain->buf_type = ret; | |
1085 | } | |
1086 | } | |
1087 | ret = 0; | |
1088 | end: | |
1089 | return ret; | |
1090 | } | |
1091 | ||
1092 | static | |
1093 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1094 | char **data_uri) | |
1095 | { | |
1096 | xmlNodePtr node; | |
1097 | ||
1098 | for (node = xmlFirstElementChild(net_output_node); node; | |
1099 | node = xmlNextElementSibling(node)) { | |
1100 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1101 | /* control_uri */ | |
1102 | *control_uri = (char *) xmlNodeGetContent(node); | |
1103 | if (!*control_uri) { | |
1104 | break; | |
1105 | } | |
1106 | } else { | |
1107 | /* data_uri */ | |
1108 | *data_uri = (char *) xmlNodeGetContent(node); | |
1109 | if (!*data_uri) { | |
1110 | break; | |
1111 | } | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1116 | } | |
1117 | ||
1118 | static | |
1119 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1120 | struct consumer_output *output) | |
1121 | { | |
1122 | int ret; | |
1123 | xmlNodePtr node; | |
1124 | ||
1125 | assert(output); | |
1126 | ||
1127 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1128 | node = xmlNextElementSibling(node)) { | |
1129 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1130 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1131 | ||
1132 | /* enabled */ | |
1133 | if (!enabled_str) { | |
1134 | ret = -LTTNG_ERR_NOMEM; | |
1135 | goto end; | |
1136 | } | |
1137 | ||
1138 | ret = parse_bool(enabled_str, &output->enabled); | |
1139 | free(enabled_str); | |
1140 | if (ret) { | |
1141 | goto end; | |
1142 | } | |
1143 | } else { | |
1144 | xmlNodePtr output_type_node; | |
1145 | ||
1146 | /* destination */ | |
1147 | output_type_node = xmlFirstElementChild(node); | |
1148 | if (!output_type_node) { | |
1149 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1150 | goto end; | |
1151 | } | |
1152 | ||
1153 | if (!strcmp((const char *) output_type_node->name, | |
1154 | config_element_path)) { | |
1155 | /* path */ | |
1156 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1157 | if (!output->path) { | |
1158 | ret = -LTTNG_ERR_NOMEM; | |
1159 | goto end; | |
1160 | } | |
1161 | } else { | |
1162 | /* net_output */ | |
1163 | ret = get_net_output_uris(output_type_node, | |
1164 | &output->control_uri, &output->data_uri); | |
1165 | if (ret) { | |
1166 | goto end; | |
1167 | } | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | ret = 0; | |
1172 | ||
1173 | end: | |
1174 | if (ret) { | |
1175 | free(output->path); | |
1176 | free(output->control_uri); | |
1177 | free(output->data_uri); | |
1178 | memset(output, 0, sizeof(struct consumer_output)); | |
1179 | } | |
1180 | return ret; | |
1181 | } | |
1182 | ||
1183 | static | |
95681498 JG |
1184 | int create_session_net_output(const char *name, const char *control_uri, |
1185 | const char *data_uri) | |
dcf266c0 JG |
1186 | { |
1187 | int ret; | |
1188 | struct lttng_handle *handle; | |
1189 | const char *uri = NULL; | |
1190 | ||
1191 | assert(name); | |
dcf266c0 | 1192 | |
95681498 | 1193 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1194 | if (!handle) { |
1195 | ret = -LTTNG_ERR_NOMEM; | |
1196 | goto end; | |
1197 | } | |
1198 | ||
1199 | if (!control_uri || !data_uri) { | |
1200 | uri = control_uri ? control_uri : data_uri; | |
1201 | control_uri = uri; | |
1202 | data_uri = uri; | |
1203 | } | |
1204 | ||
1205 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1206 | lttng_destroy_handle(handle); | |
1207 | end: | |
1208 | return ret; | |
1209 | } | |
1210 | ||
1211 | static | |
1b08cbce JR |
1212 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1213 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1214 | { |
1215 | int ret; | |
1216 | xmlNodePtr node = NULL; | |
1217 | xmlNodePtr snapshot_output_list_node; | |
1218 | xmlNodePtr snapshot_output_node; | |
1219 | ||
1220 | assert(session_name); | |
1221 | ||
1222 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1223 | if (ret) { | |
1224 | goto end; | |
1225 | } | |
1226 | ||
1227 | if (!output_node) { | |
1228 | goto end; | |
1229 | } | |
1230 | ||
1231 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1232 | ||
1233 | /* Parse and create snapshot outputs */ | |
1234 | ||
1235 | for (snapshot_output_node = | |
1236 | xmlFirstElementChild(snapshot_output_list_node); | |
1237 | snapshot_output_node; snapshot_output_node = | |
1238 | xmlNextElementSibling(snapshot_output_node)) { | |
1239 | char *name = NULL; | |
1240 | uint64_t max_size = UINT64_MAX; | |
1241 | struct consumer_output output = { 0 }; | |
1242 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1243 | const char *control_uri = NULL; |
1244 | const char *data_uri = NULL; | |
1245 | const char *path = NULL; | |
dcf266c0 JG |
1246 | |
1247 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1248 | node = xmlNextElementSibling(node)) { | |
1249 | if (!strcmp((const char *) node->name, | |
1250 | config_element_name)) { | |
1251 | /* name */ | |
1252 | name = (char *) xmlNodeGetContent(node); | |
1253 | if (!name) { | |
1254 | ret = -LTTNG_ERR_NOMEM; | |
1255 | goto error_snapshot_output; | |
1256 | } | |
1257 | } else if (!strcmp((const char *) node->name, | |
1258 | config_element_max_size)) { | |
1259 | xmlChar *content = xmlNodeGetContent(node); | |
1260 | ||
1261 | /* max_size */ | |
1262 | if (!content) { | |
1263 | ret = -LTTNG_ERR_NOMEM; | |
1264 | goto error_snapshot_output; | |
1265 | } | |
1266 | ret = parse_uint(content, &max_size); | |
1267 | free(content); | |
1268 | if (ret) { | |
1269 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1270 | goto error_snapshot_output; | |
1271 | } | |
1272 | } else { | |
1273 | /* consumer_output */ | |
1274 | ret = process_consumer_output(node, &output); | |
1275 | if (ret) { | |
1276 | goto error_snapshot_output; | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | ||
21a3f144 JR |
1281 | control_uri = output.control_uri; |
1282 | data_uri = output.data_uri; | |
1283 | path = output.path; | |
1284 | ||
1b08cbce JR |
1285 | if (overrides) { |
1286 | if (overrides->path_url) { | |
1b08cbce | 1287 | path = overrides->path_url; |
21a3f144 JR |
1288 | /* Control/data_uri are null */ |
1289 | control_uri = NULL; | |
1290 | data_uri = NULL; | |
1b08cbce JR |
1291 | } else { |
1292 | if (overrides->ctrl_url) { | |
1b08cbce | 1293 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1294 | /* path is null */ |
1295 | path = NULL; | |
1b08cbce JR |
1296 | } |
1297 | if (overrides->data_url) { | |
1b08cbce | 1298 | data_uri = overrides->data_url; |
21a3f144 JR |
1299 | /* path is null */ |
1300 | path = NULL; | |
1b08cbce JR |
1301 | } |
1302 | } | |
1b08cbce JR |
1303 | } |
1304 | ||
dcf266c0 JG |
1305 | snapshot_output = lttng_snapshot_output_create(); |
1306 | if (!snapshot_output) { | |
1307 | ret = -LTTNG_ERR_NOMEM; | |
1308 | goto error_snapshot_output; | |
1309 | } | |
1310 | ||
1311 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1312 | if (ret) { | |
1313 | goto error_snapshot_output; | |
1314 | } | |
1315 | ||
1316 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1317 | if (ret) { | |
1318 | goto error_snapshot_output; | |
1319 | } | |
1320 | ||
1b08cbce JR |
1321 | if (path) { |
1322 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1323 | snapshot_output); |
1324 | if (ret) { | |
1325 | goto error_snapshot_output; | |
1326 | } | |
1327 | } else { | |
1b08cbce JR |
1328 | if (control_uri) { |
1329 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1330 | snapshot_output); |
1331 | if (ret) { | |
1332 | goto error_snapshot_output; | |
1333 | } | |
1334 | } | |
1335 | ||
1b08cbce JR |
1336 | if (data_uri) { |
1337 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1338 | snapshot_output); |
1339 | if (ret) { | |
1340 | goto error_snapshot_output; | |
1341 | } | |
1342 | } | |
1343 | } | |
1344 | ||
1345 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1346 | error_snapshot_output: | |
1347 | free(name); | |
1348 | free(output.path); | |
1349 | free(output.control_uri); | |
1350 | free(output.data_uri); | |
1351 | lttng_snapshot_output_destroy(snapshot_output); | |
1352 | if (ret) { | |
1353 | goto end; | |
1354 | } | |
1355 | } | |
1356 | end: | |
1357 | return ret; | |
1358 | } | |
1359 | ||
1360 | static | |
1361 | int create_session(const char *name, | |
dcf266c0 | 1362 | xmlNodePtr output_node, |
1b08cbce JR |
1363 | uint64_t live_timer_interval, |
1364 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1365 | { |
1366 | int ret; | |
1367 | struct consumer_output output = { 0 }; | |
1368 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1369 | const char *control_uri = NULL; |
1370 | const char *data_uri = NULL; | |
1371 | const char *path = NULL; | |
dcf266c0 JG |
1372 | |
1373 | assert(name); | |
dcf266c0 JG |
1374 | |
1375 | if (output_node) { | |
1376 | consumer_output_node = xmlFirstElementChild(output_node); | |
1377 | if (!consumer_output_node) { | |
1378 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1379 | goto end; | |
1380 | } | |
1381 | ||
1382 | if (strcmp((const char *) consumer_output_node->name, | |
1383 | config_element_consumer_output)) { | |
1384 | WARN("Invalid output type, expected %s node", | |
1385 | config_element_consumer_output); | |
1386 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1387 | goto end; | |
1388 | } | |
1389 | ||
1390 | ret = process_consumer_output(consumer_output_node, &output); | |
1391 | if (ret) { | |
1392 | goto end; | |
1393 | } | |
1394 | } | |
1395 | ||
21a3f144 JR |
1396 | control_uri = output.control_uri; |
1397 | data_uri = output.data_uri; | |
1398 | path = output.path; | |
1399 | ||
1b08cbce JR |
1400 | /* Check for override and apply them */ |
1401 | if (overrides) { | |
1402 | if (overrides->path_url) { | |
1b08cbce | 1403 | path = overrides->path_url; |
21a3f144 JR |
1404 | /* control/data_uri are null */; |
1405 | control_uri = NULL; | |
1406 | data_uri = NULL; | |
1b08cbce JR |
1407 | } else { |
1408 | if (overrides->ctrl_url) { | |
1b08cbce | 1409 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1410 | /* path is null */ |
1411 | path = NULL; | |
1b08cbce JR |
1412 | } |
1413 | if (overrides->data_url) { | |
1b08cbce | 1414 | data_uri = overrides->data_url; |
21a3f144 JR |
1415 | /* path is null */ |
1416 | path = NULL; | |
1b08cbce JR |
1417 | } |
1418 | } | |
1b08cbce JR |
1419 | } |
1420 | ||
21a3f144 | 1421 | |
1b08cbce | 1422 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1423 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1424 | goto end; | |
1425 | } | |
1426 | ||
1b08cbce | 1427 | if (control_uri || data_uri) { |
dcf266c0 JG |
1428 | /* network destination */ |
1429 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1430 | /* |
1431 | * URLs are provided for sure since the test above make sure that | |
1432 | * with a live timer the data and control URIs are provided. So, | |
1433 | * NULL is passed here and will be set right after. | |
1434 | */ | |
1435 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1436 | } else { |
1437 | ret = lttng_create_session(name, NULL); | |
1438 | } | |
1439 | if (ret) { | |
1440 | goto end; | |
1441 | } | |
1442 | ||
1b08cbce | 1443 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1444 | if (ret) { |
1445 | goto end; | |
dcf266c0 | 1446 | } |
95681498 | 1447 | |
dcf266c0 JG |
1448 | } else { |
1449 | /* either local output or no output */ | |
1b08cbce | 1450 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1451 | if (ret) { |
1452 | goto end; | |
1453 | } | |
1454 | } | |
1455 | end: | |
1456 | free(output.path); | |
1457 | free(output.control_uri); | |
1458 | free(output.data_uri); | |
1459 | return ret; | |
1460 | } | |
1461 | static | |
1462 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1463 | struct lttng_event_probe_attr *attr) | |
1464 | { | |
1465 | int ret; | |
1466 | ||
1467 | assert(probe_attribute_node); | |
1468 | assert(attr); | |
1469 | ||
1470 | if (!strcmp((const char *) probe_attribute_node->name, | |
1471 | config_element_address)) { | |
1472 | xmlChar *content; | |
1473 | uint64_t addr = 0; | |
1474 | ||
1475 | /* addr */ | |
1476 | content = xmlNodeGetContent(probe_attribute_node); | |
1477 | if (!content) { | |
1478 | ret = -LTTNG_ERR_NOMEM; | |
1479 | goto end; | |
1480 | } | |
1481 | ||
1482 | ret = parse_uint(content, &addr); | |
1483 | free(content); | |
1484 | if (ret) { | |
1485 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1486 | goto end; | |
1487 | } | |
1488 | ||
1489 | attr->addr = addr; | |
1490 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1491 | config_element_offset)) { | |
1492 | xmlChar *content; | |
1493 | uint64_t offset = 0; | |
1494 | ||
1495 | /* offset */ | |
1496 | content = xmlNodeGetContent(probe_attribute_node); | |
1497 | if (!content) { | |
1498 | ret = -LTTNG_ERR_NOMEM; | |
1499 | goto end; | |
1500 | } | |
1501 | ||
1502 | ret = parse_uint(content, &offset); | |
1503 | free(content); | |
1504 | if (ret) { | |
1505 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1506 | goto end; | |
1507 | } | |
1508 | ||
1509 | attr->offset = offset; | |
1510 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1511 | config_element_symbol_name)) { | |
1512 | xmlChar *content; | |
dcf266c0 JG |
1513 | |
1514 | /* symbol_name */ | |
1515 | content = xmlNodeGetContent(probe_attribute_node); | |
1516 | if (!content) { | |
1517 | ret = -LTTNG_ERR_NOMEM; | |
1518 | goto end; | |
1519 | } | |
1520 | ||
d2e67842 JG |
1521 | ret = lttng_strncpy(attr->symbol_name, |
1522 | (const char *) content, | |
1523 | LTTNG_SYMBOL_NAME_LEN); | |
1524 | if (ret == -1) { | |
1525 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1526 | (const char *) content, | |
1527 | strlen((const char *) content), | |
1528 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1529 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1530 | free(content); | |
1531 | goto end; | |
1532 | } | |
dcf266c0 JG |
1533 | free(content); |
1534 | } | |
1535 | ret = 0; | |
1536 | end: | |
1537 | return ret; | |
1538 | } | |
1539 | ||
1540 | static | |
1541 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1542 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1543 | { |
d7b645e2 | 1544 | int ret = 0, i; |
dcf266c0 JG |
1545 | xmlNodePtr node; |
1546 | struct lttng_event event; | |
1547 | char **exclusions = NULL; | |
1548 | unsigned long exclusion_count = 0; | |
1549 | char *filter_expression = NULL; | |
1550 | ||
1551 | assert(event_node); | |
1552 | assert(handle); | |
1553 | assert(channel_name); | |
1554 | ||
1555 | memset(&event, 0, sizeof(event)); | |
1556 | ||
f40eba3d JG |
1557 | /* Initialize default log level which varies by domain */ |
1558 | switch (handle->domain.type) | |
1559 | { | |
1560 | case LTTNG_DOMAIN_JUL: | |
1561 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1562 | break; | |
1563 | case LTTNG_DOMAIN_LOG4J: | |
1564 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1565 | break; | |
1566 | case LTTNG_DOMAIN_PYTHON: | |
1567 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1568 | break; | |
1569 | case LTTNG_DOMAIN_UST: | |
1570 | case LTTNG_DOMAIN_KERNEL: | |
1571 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1572 | break; | |
1573 | default: | |
1574 | assert(0); | |
1575 | } | |
1576 | ||
dcf266c0 JG |
1577 | for (node = xmlFirstElementChild(event_node); node; |
1578 | node = xmlNextElementSibling(node)) { | |
1579 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1580 | xmlChar *content; | |
dcf266c0 JG |
1581 | |
1582 | /* name */ | |
1583 | content = xmlNodeGetContent(node); | |
1584 | if (!content) { | |
1585 | ret = -LTTNG_ERR_NOMEM; | |
1586 | goto end; | |
1587 | } | |
1588 | ||
d2e67842 JG |
1589 | ret = lttng_strncpy(event.name, |
1590 | (const char *) content, | |
1591 | LTTNG_SYMBOL_NAME_LEN); | |
1592 | if (ret == -1) { | |
1593 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1594 | (const char *) content, | |
1595 | strlen((const char *) content), | |
1596 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1597 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1598 | free(content); | |
1599 | goto end; | |
1600 | } | |
dcf266c0 JG |
1601 | free(content); |
1602 | } else if (!strcmp((const char *) node->name, | |
1603 | config_element_enabled)) { | |
1604 | xmlChar *content = xmlNodeGetContent(node); | |
1605 | ||
1606 | /* enabled */ | |
1607 | if (!content) { | |
1608 | ret = -LTTNG_ERR_NOMEM; | |
1609 | goto end; | |
1610 | } | |
1611 | ||
1612 | ret = parse_bool(content, &event.enabled); | |
1613 | free(content); | |
1614 | if (ret) { | |
1615 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1616 | goto end; | |
1617 | } | |
1618 | } else if (!strcmp((const char *) node->name, | |
1619 | config_element_type)) { | |
1620 | xmlChar *content = xmlNodeGetContent(node); | |
1621 | ||
1622 | /* type */ | |
1623 | if (!content) { | |
1624 | ret = -LTTNG_ERR_NOMEM; | |
1625 | goto end; | |
1626 | } | |
1627 | ||
1628 | ret = get_event_type(content); | |
1629 | free(content); | |
1630 | if (ret < 0) { | |
1631 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1632 | goto end; | |
1633 | } | |
1634 | ||
1635 | event.type = ret; | |
1636 | } else if (!strcmp((const char *) node->name, | |
1637 | config_element_loglevel_type)) { | |
1638 | xmlChar *content = xmlNodeGetContent(node); | |
1639 | ||
1640 | /* loglevel_type */ | |
1641 | if (!content) { | |
1642 | ret = -LTTNG_ERR_NOMEM; | |
1643 | goto end; | |
1644 | } | |
1645 | ||
1646 | ret = get_loglevel_type(content); | |
1647 | free(content); | |
1648 | if (ret < 0) { | |
1649 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1650 | goto end; | |
1651 | } | |
1652 | ||
1653 | event.loglevel_type = ret; | |
1654 | } else if (!strcmp((const char *) node->name, | |
1655 | config_element_loglevel)) { | |
1656 | xmlChar *content; | |
1657 | int64_t loglevel = 0; | |
1658 | ||
1659 | /* loglevel */ | |
1660 | content = xmlNodeGetContent(node); | |
1661 | if (!content) { | |
1662 | ret = -LTTNG_ERR_NOMEM; | |
1663 | goto end; | |
1664 | } | |
1665 | ||
1666 | ret = parse_int(content, &loglevel); | |
1667 | free(content); | |
1668 | if (ret) { | |
1669 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1670 | goto end; | |
1671 | } | |
1672 | ||
1673 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1674 | WARN("loglevel out of range."); | |
1675 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1676 | goto end; | |
1677 | } | |
1678 | ||
1679 | event.loglevel = loglevel; | |
1680 | } else if (!strcmp((const char *) node->name, | |
1681 | config_element_filter)) { | |
1682 | xmlChar *content = | |
1683 | xmlNodeGetContent(node); | |
1684 | ||
1685 | /* filter */ | |
1686 | if (!content) { | |
1687 | ret = -LTTNG_ERR_NOMEM; | |
1688 | goto end; | |
1689 | } | |
1690 | ||
02d8ac3d | 1691 | free(filter_expression); |
dcf266c0 JG |
1692 | filter_expression = strdup((char *) content); |
1693 | free(content); | |
1694 | if (!filter_expression) { | |
1695 | ret = -LTTNG_ERR_NOMEM; | |
1696 | goto end; | |
1697 | } | |
1698 | } else if (!strcmp((const char *) node->name, | |
1699 | config_element_exclusions)) { | |
1700 | xmlNodePtr exclusion_node; | |
1701 | int exclusion_index = 0; | |
1702 | ||
1703 | /* exclusions */ | |
1704 | if (exclusions) { | |
1705 | /* | |
1706 | * Exclusions has already been initialized, | |
1707 | * invalid file. | |
1708 | */ | |
1709 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1710 | goto end; | |
1711 | } | |
1712 | ||
1713 | exclusion_count = xmlChildElementCount(node); | |
1714 | if (!exclusion_count) { | |
1715 | continue; | |
1716 | } | |
1717 | ||
1718 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1719 | if (!exclusions) { | |
1720 | exclusion_count = 0; | |
1721 | ret = -LTTNG_ERR_NOMEM; | |
1722 | goto end; | |
1723 | } | |
1724 | ||
1725 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1726 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1727 | xmlChar *content = | |
1728 | xmlNodeGetContent(exclusion_node); | |
1729 | ||
1730 | if (!content) { | |
1731 | ret = -LTTNG_ERR_NOMEM; | |
1732 | goto end; | |
1733 | } | |
1734 | ||
1735 | exclusions[exclusion_index] = strdup((const char *) content); | |
1736 | free(content); | |
1737 | if (!exclusions[exclusion_index]) { | |
1738 | ret = -LTTNG_ERR_NOMEM; | |
1739 | goto end; | |
1740 | } | |
1741 | exclusion_index++; | |
1742 | } | |
1743 | ||
1744 | event.exclusion = 1; | |
1745 | } else if (!strcmp((const char *) node->name, | |
1746 | config_element_attributes)) { | |
1747 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1748 | ||
1749 | /* attributes */ | |
1750 | if (!attribute_node) { | |
1751 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1752 | goto end; | |
1753 | } | |
1754 | ||
1755 | if (!strcmp((const char *) node->name, | |
1756 | config_element_probe_attributes)) { | |
1757 | xmlNodePtr probe_attribute_node; | |
1758 | ||
1759 | /* probe_attributes */ | |
1760 | for (probe_attribute_node = | |
1761 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1762 | probe_attribute_node = xmlNextElementSibling( | |
1763 | probe_attribute_node)) { | |
1764 | ||
1765 | ret = process_probe_attribute_node(probe_attribute_node, | |
1766 | &event.attr.probe); | |
1767 | if (ret) { | |
1768 | goto end; | |
1769 | } | |
1770 | } | |
1771 | } else { | |
1772 | size_t sym_len; | |
1773 | xmlChar *content; | |
1774 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1775 | ||
1776 | /* function_attributes */ | |
1777 | content = xmlNodeGetContent(symbol_node); | |
1778 | if (!content) { | |
1779 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1780 | goto end; | |
1781 | } | |
1782 | ||
1783 | sym_len = strlen((char *) content); | |
1784 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1785 | WARN("Function name too long."); | |
1786 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1787 | free(content); | |
1788 | goto end; | |
1789 | } | |
1790 | ||
d2e67842 JG |
1791 | ret = lttng_strncpy( |
1792 | event.attr.ftrace.symbol_name, | |
1793 | (char *) content, sym_len); | |
1794 | if (ret == -1) { | |
1795 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1796 | free(content); | |
1797 | goto end; | |
1798 | } | |
dcf266c0 JG |
1799 | free(content); |
1800 | } | |
1801 | } | |
1802 | } | |
1803 | ||
d7b645e2 JR |
1804 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1805 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1806 | filter_expression, exclusion_count, exclusions); | |
1807 | if (ret < 0) { | |
1808 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1809 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1810 | goto end; | |
1811 | } | |
065321e9 | 1812 | } |
d2e67842 | 1813 | ret = 0; |
dcf266c0 JG |
1814 | end: |
1815 | for (i = 0; i < exclusion_count; i++) { | |
1816 | free(exclusions[i]); | |
1817 | } | |
1818 | ||
1819 | free(exclusions); | |
1820 | free(filter_expression); | |
1821 | return ret; | |
1822 | } | |
1823 | ||
1824 | static | |
1825 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1826 | const char *channel_name) | |
1827 | { | |
1828 | int ret = 0; | |
d7b645e2 | 1829 | struct lttng_event event; |
dcf266c0 JG |
1830 | xmlNodePtr node; |
1831 | ||
1832 | assert(events_node); | |
1833 | assert(handle); | |
1834 | assert(channel_name); | |
1835 | ||
1836 | for (node = xmlFirstElementChild(events_node); node; | |
1837 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 1838 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1839 | if (ret) { |
1840 | goto end; | |
1841 | } | |
1842 | } | |
d7b645e2 JR |
1843 | |
1844 | /* | |
1845 | * Disable all events to enable only the necessary events. | |
1846 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1847 | * force this approach. | |
1848 | */ | |
1849 | memset(&event, 0, sizeof(event)); | |
1850 | event.loglevel = -1; | |
1851 | event.type = LTTNG_EVENT_ALL; | |
1852 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1853 | if (ret) { | |
1854 | goto end; | |
1855 | } | |
1856 | ||
1857 | for (node = xmlFirstElementChild(events_node); node; | |
1858 | node = xmlNextElementSibling(node)) { | |
1859 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1860 | if (ret) { | |
1861 | goto end; | |
1862 | } | |
1863 | } | |
1864 | ||
dcf266c0 JG |
1865 | end: |
1866 | return ret; | |
1867 | } | |
1868 | ||
1869 | static | |
1870 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1871 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1872 | xmlNodePtr *events_node) | |
1873 | { | |
1874 | int ret; | |
1875 | ||
1876 | assert(attr_node); | |
1877 | assert(channel); | |
1878 | assert(contexts_node); | |
1879 | assert(events_node); | |
1880 | ||
1881 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1882 | xmlChar *content; | |
dcf266c0 JG |
1883 | |
1884 | /* name */ | |
1885 | content = xmlNodeGetContent(attr_node); | |
1886 | if (!content) { | |
1887 | ret = -LTTNG_ERR_NOMEM; | |
1888 | goto end; | |
1889 | } | |
1890 | ||
d2e67842 JG |
1891 | ret = lttng_strncpy(channel->name, |
1892 | (const char *) content, | |
1893 | LTTNG_SYMBOL_NAME_LEN); | |
1894 | if (ret == -1) { | |
1895 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1896 | (const char *) content, | |
1897 | strlen((const char *) content), | |
1898 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1899 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1900 | free(content); | |
1901 | goto end; | |
1902 | } | |
dcf266c0 JG |
1903 | free(content); |
1904 | } else if (!strcmp((const char *) attr_node->name, | |
1905 | config_element_enabled)) { | |
1906 | xmlChar *content; | |
1907 | int enabled; | |
1908 | ||
1909 | /* enabled */ | |
1910 | content = xmlNodeGetContent(attr_node); | |
1911 | if (!content) { | |
1912 | ret = -LTTNG_ERR_NOMEM; | |
1913 | goto end; | |
1914 | } | |
1915 | ||
1916 | ret = parse_bool(content, &enabled); | |
1917 | free(content); | |
1918 | if (ret) { | |
1919 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1920 | goto end; | |
1921 | } | |
1922 | ||
1923 | channel->enabled = enabled; | |
1924 | } else if (!strcmp((const char *) attr_node->name, | |
1925 | config_element_overwrite_mode)) { | |
1926 | xmlChar *content; | |
1927 | ||
1928 | /* overwrite_mode */ | |
1929 | content = xmlNodeGetContent(attr_node); | |
1930 | if (!content) { | |
1931 | ret = -LTTNG_ERR_NOMEM; | |
1932 | goto end; | |
1933 | } | |
1934 | ||
1935 | ret = get_overwrite_mode(content); | |
1936 | free(content); | |
1937 | if (ret < 0) { | |
1938 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1939 | goto end; | |
1940 | } | |
1941 | ||
1942 | channel->attr.overwrite = ret; | |
1943 | } else if (!strcmp((const char *) attr_node->name, | |
1944 | config_element_subbuf_size)) { | |
1945 | xmlChar *content; | |
1946 | ||
1947 | /* subbuffer_size */ | |
1948 | content = xmlNodeGetContent(attr_node); | |
1949 | if (!content) { | |
1950 | ret = -LTTNG_ERR_NOMEM; | |
1951 | goto end; | |
1952 | } | |
1953 | ||
1954 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1955 | free(content); | |
1956 | if (ret) { | |
1957 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1958 | goto end; | |
1959 | } | |
1960 | } else if (!strcmp((const char *) attr_node->name, | |
1961 | config_element_num_subbuf)) { | |
1962 | xmlChar *content; | |
1963 | ||
1964 | /* subbuffer_count */ | |
1965 | content = xmlNodeGetContent(attr_node); | |
1966 | if (!content) { | |
1967 | ret = -LTTNG_ERR_NOMEM; | |
1968 | goto end; | |
1969 | } | |
1970 | ||
1971 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1972 | free(content); | |
1973 | if (ret) { | |
1974 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1975 | goto end; | |
1976 | } | |
1977 | } else if (!strcmp((const char *) attr_node->name, | |
1978 | config_element_switch_timer_interval)) { | |
1979 | xmlChar *content; | |
1980 | uint64_t switch_timer_interval = 0; | |
1981 | ||
1982 | /* switch_timer_interval */ | |
1983 | content = xmlNodeGetContent(attr_node); | |
1984 | if (!content) { | |
1985 | ret = -LTTNG_ERR_NOMEM; | |
1986 | goto end; | |
1987 | } | |
1988 | ||
1989 | ret = parse_uint(content, &switch_timer_interval); | |
1990 | free(content); | |
1991 | if (ret) { | |
1992 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1993 | goto end; | |
1994 | } | |
1995 | ||
1996 | if (switch_timer_interval > UINT_MAX) { | |
1997 | WARN("switch_timer_interval out of range."); | |
1998 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1999 | goto end; | |
2000 | } | |
2001 | ||
2002 | channel->attr.switch_timer_interval = | |
2003 | switch_timer_interval; | |
2004 | } else if (!strcmp((const char *) attr_node->name, | |
2005 | config_element_read_timer_interval)) { | |
2006 | xmlChar *content; | |
2007 | uint64_t read_timer_interval = 0; | |
2008 | ||
2009 | /* read_timer_interval */ | |
2010 | content = xmlNodeGetContent(attr_node); | |
2011 | if (!content) { | |
2012 | ret = -LTTNG_ERR_NOMEM; | |
2013 | goto end; | |
2014 | } | |
2015 | ||
2016 | ret = parse_uint(content, &read_timer_interval); | |
2017 | free(content); | |
2018 | if (ret) { | |
2019 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2020 | goto end; | |
2021 | } | |
2022 | ||
2023 | if (read_timer_interval > UINT_MAX) { | |
2024 | WARN("read_timer_interval out of range."); | |
2025 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2026 | goto end; | |
2027 | } | |
2028 | ||
2029 | channel->attr.read_timer_interval = | |
2030 | read_timer_interval; | |
2031 | } else if (!strcmp((const char *) attr_node->name, | |
2032 | config_element_output_type)) { | |
2033 | xmlChar *content; | |
2034 | ||
2035 | /* output_type */ | |
2036 | content = xmlNodeGetContent(attr_node); | |
2037 | if (!content) { | |
2038 | ret = -LTTNG_ERR_NOMEM; | |
2039 | goto end; | |
2040 | } | |
2041 | ||
2042 | ret = get_output_type(content); | |
2043 | free(content); | |
2044 | if (ret < 0) { | |
2045 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2046 | goto end; | |
2047 | } | |
2048 | ||
2049 | channel->attr.output = ret; | |
2050 | } else if (!strcmp((const char *) attr_node->name, | |
2051 | config_element_tracefile_size)) { | |
2052 | xmlChar *content; | |
2053 | ||
2054 | /* tracefile_size */ | |
2055 | content = xmlNodeGetContent(attr_node); | |
2056 | if (!content) { | |
2057 | ret = -LTTNG_ERR_NOMEM; | |
2058 | goto end; | |
2059 | } | |
2060 | ||
2061 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2062 | free(content); | |
2063 | if (ret) { | |
2064 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2065 | goto end; | |
2066 | } | |
2067 | } else if (!strcmp((const char *) attr_node->name, | |
2068 | config_element_tracefile_count)) { | |
2069 | xmlChar *content; | |
2070 | ||
2071 | /* tracefile_count */ | |
2072 | content = xmlNodeGetContent(attr_node); | |
2073 | if (!content) { | |
2074 | ret = -LTTNG_ERR_NOMEM; | |
2075 | goto end; | |
2076 | } | |
2077 | ||
2078 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2079 | free(content); | |
2080 | if (ret) { | |
2081 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2082 | goto end; | |
2083 | } | |
2084 | } else if (!strcmp((const char *) attr_node->name, | |
2085 | config_element_live_timer_interval)) { | |
2086 | xmlChar *content; | |
2087 | uint64_t live_timer_interval = 0; | |
2088 | ||
2089 | /* live_timer_interval */ | |
2090 | content = xmlNodeGetContent(attr_node); | |
2091 | if (!content) { | |
2092 | ret = -LTTNG_ERR_NOMEM; | |
2093 | goto end; | |
2094 | } | |
2095 | ||
2096 | ret = parse_uint(content, &live_timer_interval); | |
2097 | free(content); | |
2098 | if (ret) { | |
2099 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2100 | goto end; | |
2101 | } | |
2102 | ||
2103 | if (live_timer_interval > UINT_MAX) { | |
2104 | WARN("live_timer_interval out of range."); | |
2105 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2106 | goto end; | |
2107 | } | |
2108 | ||
2109 | channel->attr.live_timer_interval = | |
2110 | live_timer_interval; | |
4fc2b126 JR |
2111 | } else if (!strcmp((const char *) attr_node->name, |
2112 | config_element_monitor_timer_interval)) { | |
2113 | xmlChar *content; | |
2114 | uint64_t monitor_timer_interval = 0; | |
2115 | ||
2116 | /* monitor_timer_interval */ | |
2117 | content = xmlNodeGetContent(attr_node); | |
2118 | if (!content) { | |
2119 | ret = -LTTNG_ERR_NOMEM; | |
2120 | goto end; | |
2121 | } | |
2122 | ||
2123 | ret = parse_uint(content, &monitor_timer_interval); | |
2124 | free(content); | |
2125 | if (ret) { | |
2126 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2127 | goto end; | |
2128 | } | |
2129 | ||
2130 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2131 | monitor_timer_interval); | |
2132 | if (ret) { | |
2133 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2134 | goto end; | |
2135 | } | |
275472aa JR |
2136 | } else if (!strcmp((const char *) attr_node->name, |
2137 | config_element_blocking_timeout)) { | |
2138 | xmlChar *content; | |
2139 | int64_t blocking_timeout = 0; | |
2140 | ||
2141 | /* blocking_timeout */ | |
2142 | content = xmlNodeGetContent(attr_node); | |
2143 | if (!content) { | |
2144 | ret = -LTTNG_ERR_NOMEM; | |
2145 | goto end; | |
2146 | } | |
2147 | ||
2148 | ret = parse_int(content, &blocking_timeout); | |
2149 | free(content); | |
2150 | if (ret) { | |
2151 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2152 | goto end; | |
2153 | } | |
2154 | ||
2155 | ret = lttng_channel_set_blocking_timeout(channel, | |
2156 | blocking_timeout); | |
2157 | if (ret) { | |
2158 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2159 | goto end; | |
2160 | } | |
dcf266c0 JG |
2161 | } else if (!strcmp((const char *) attr_node->name, |
2162 | config_element_events)) { | |
2163 | /* events */ | |
2164 | *events_node = attr_node; | |
2165 | } else { | |
2166 | /* contexts */ | |
2167 | *contexts_node = attr_node; | |
2168 | } | |
2169 | ret = 0; | |
2170 | end: | |
2171 | return ret; | |
2172 | } | |
2173 | ||
2174 | static | |
2175 | int process_context_node(xmlNodePtr context_node, | |
2176 | struct lttng_handle *handle, const char *channel_name) | |
2177 | { | |
2178 | int ret; | |
2179 | struct lttng_event_context context; | |
2180 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2181 | ||
2182 | assert(handle); | |
2183 | assert(channel_name); | |
2184 | ||
2185 | if (!context_child_node) { | |
2186 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2187 | goto end; | |
2188 | } | |
2189 | ||
2190 | memset(&context, 0, sizeof(context)); | |
2191 | ||
2192 | if (!strcmp((const char *) context_child_node->name, | |
2193 | config_element_type)) { | |
2194 | /* type */ | |
2195 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2196 | |
dcf266c0 JG |
2197 | if (!content) { |
2198 | ret = -LTTNG_ERR_NOMEM; | |
2199 | goto end; | |
2200 | } | |
2201 | ||
2202 | ret = get_context_type(content); | |
2203 | free(content); | |
2204 | if (ret < 0) { | |
2205 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
2209 | context.ctx = ret; | |
045fc617 JG |
2210 | } else if (!strcmp((const char *) context_child_node->name, |
2211 | config_element_context_perf)) { | |
2212 | /* perf */ | |
dcf266c0 JG |
2213 | xmlNodePtr perf_attr_node; |
2214 | ||
14ce5bd8 JG |
2215 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2216 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2217 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2218 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2219 | perf_attr_node; perf_attr_node = | |
2220 | xmlNextElementSibling(perf_attr_node)) { | |
2221 | if (!strcmp((const char *) perf_attr_node->name, | |
2222 | config_element_type)) { | |
2223 | xmlChar *content; | |
2224 | uint64_t type = 0; | |
2225 | ||
2226 | /* type */ | |
2227 | content = xmlNodeGetContent(perf_attr_node); | |
2228 | if (!content) { | |
2229 | ret = -LTTNG_ERR_NOMEM; | |
2230 | goto end; | |
2231 | } | |
2232 | ||
2233 | ret = parse_uint(content, &type); | |
2234 | free(content); | |
2235 | if (ret) { | |
2236 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2237 | goto end; | |
2238 | } | |
2239 | ||
2240 | if (type > UINT32_MAX) { | |
2241 | WARN("perf context type out of range."); | |
2242 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2243 | goto end; | |
2244 | } | |
2245 | ||
2246 | context.u.perf_counter.type = type; | |
2247 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2248 | config_element_config)) { | |
2249 | xmlChar *content; | |
2250 | uint64_t config = 0; | |
2251 | ||
2252 | /* config */ | |
2253 | content = xmlNodeGetContent(perf_attr_node); | |
2254 | if (!content) { | |
2255 | ret = -LTTNG_ERR_NOMEM; | |
2256 | goto end; | |
2257 | } | |
2258 | ||
2259 | ret = parse_uint(content, &config); | |
2260 | free(content); | |
2261 | if (ret) { | |
2262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2263 | goto end; | |
2264 | } | |
2265 | ||
2266 | context.u.perf_counter.config = config; | |
2267 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2268 | config_element_name)) { | |
2269 | xmlChar *content; | |
dcf266c0 JG |
2270 | |
2271 | /* name */ | |
2272 | content = xmlNodeGetContent(perf_attr_node); | |
2273 | if (!content) { | |
2274 | ret = -LTTNG_ERR_NOMEM; | |
2275 | goto end; | |
2276 | } | |
2277 | ||
d2e67842 JG |
2278 | ret = lttng_strncpy(context.u.perf_counter.name, |
2279 | (const char *) content, | |
2280 | LTTNG_SYMBOL_NAME_LEN); | |
2281 | if (ret == -1) { | |
2282 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2283 | (const char *) content, | |
2284 | strlen((const char *) content), | |
2285 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2286 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2287 | free(content); | |
2288 | goto end; | |
2289 | } | |
dcf266c0 JG |
2290 | free(content); |
2291 | } | |
2292 | } | |
045fc617 JG |
2293 | } else if (!strcmp((const char *) context_child_node->name, |
2294 | config_element_context_app)) { | |
2295 | /* application context */ | |
2296 | xmlNodePtr app_ctx_node; | |
2297 | ||
2298 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2299 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2300 | app_ctx_node; app_ctx_node = | |
2301 | xmlNextElementSibling(app_ctx_node)) { | |
2302 | xmlChar *content; | |
2303 | char **target = strcmp( | |
2304 | (const char *) app_ctx_node->name, | |
2305 | config_element_context_app_provider_name) == 0 ? | |
2306 | &context.u.app_ctx.provider_name : | |
2307 | &context.u.app_ctx.ctx_name; | |
2308 | ||
2309 | content = xmlNodeGetContent(app_ctx_node); | |
2310 | if (!content) { | |
2311 | ret = -LTTNG_ERR_NOMEM; | |
2312 | goto end; | |
2313 | } | |
2314 | ||
2315 | *target = (char *) content; | |
2316 | } | |
2317 | } else { | |
2318 | /* Unrecognized context type */ | |
2319 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2320 | goto end; | |
dcf266c0 JG |
2321 | } |
2322 | ||
2323 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2324 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2325 | free(context.u.app_ctx.provider_name); | |
2326 | free(context.u.app_ctx.ctx_name); | |
2327 | } | |
dcf266c0 JG |
2328 | end: |
2329 | return ret; | |
2330 | } | |
2331 | ||
2332 | static | |
2333 | int process_contexts_node(xmlNodePtr contexts_node, | |
2334 | struct lttng_handle *handle, const char *channel_name) | |
2335 | { | |
2336 | int ret = 0; | |
2337 | xmlNodePtr context_node; | |
2338 | ||
2339 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2340 | context_node = xmlNextElementSibling(context_node)) { | |
2341 | ret = process_context_node(context_node, handle, channel_name); | |
2342 | if (ret) { | |
2343 | goto end; | |
2344 | } | |
2345 | } | |
2346 | end: | |
2347 | return ret; | |
2348 | } | |
2349 | ||
847a5916 | 2350 | static |
96518a56 MD |
2351 | int get_tracker_elements(enum lttng_tracker_type tracker_type, |
2352 | const char **element_id_tracker, | |
2353 | const char **element_target_id, | |
2354 | const char **element_id, | |
2355 | const char **element_id_alias, | |
2356 | const char **element_name) | |
2357 | { | |
2358 | int ret = 0; | |
2359 | ||
2360 | switch (tracker_type) { | |
2361 | case LTTNG_TRACKER_PID: | |
2362 | *element_id_tracker = config_element_pid_tracker; | |
2363 | *element_target_id = config_element_target_pid; | |
2364 | *element_id = config_element_id; | |
2365 | *element_id_alias = config_element_pid; | |
2366 | *element_name = NULL; | |
2367 | break; | |
2368 | case LTTNG_TRACKER_VPID: | |
2369 | *element_id_tracker = config_element_vpid_tracker; | |
2370 | *element_target_id = config_element_target_vpid; | |
2371 | *element_id = config_element_id; | |
2372 | *element_id_alias = NULL; | |
2373 | *element_name = NULL; | |
2374 | break; | |
2375 | case LTTNG_TRACKER_UID: | |
2376 | *element_id_tracker = config_element_uid_tracker; | |
2377 | *element_target_id = config_element_target_uid; | |
2378 | *element_id = config_element_id; | |
2379 | *element_id_alias = NULL; | |
2380 | *element_name = config_element_name; | |
2381 | break; | |
2382 | case LTTNG_TRACKER_VUID: | |
2383 | *element_id_tracker = config_element_vuid_tracker; | |
2384 | *element_target_id = config_element_target_vuid; | |
2385 | *element_id = config_element_id; | |
2386 | *element_id_alias = NULL; | |
2387 | *element_name = config_element_name; | |
2388 | break; | |
2389 | case LTTNG_TRACKER_GID: | |
2390 | *element_id_tracker = config_element_gid_tracker; | |
2391 | *element_target_id = config_element_target_gid; | |
2392 | *element_id = config_element_id; | |
2393 | *element_id_alias = NULL; | |
2394 | *element_name = config_element_name; | |
2395 | break; | |
2396 | case LTTNG_TRACKER_VGID: | |
2397 | *element_id_tracker = config_element_vgid_tracker; | |
2398 | *element_target_id = config_element_target_vgid; | |
2399 | *element_id = config_element_id; | |
2400 | *element_id_alias = NULL; | |
2401 | *element_name = config_element_name; | |
2402 | break; | |
2403 | default: | |
2404 | ret = LTTNG_ERR_INVALID; | |
2405 | } | |
2406 | return ret; | |
2407 | } | |
2408 | ||
2409 | static | |
2410 | int process_id_tracker_node(xmlNodePtr id_tracker_node, | |
2411 | struct lttng_handle *handle, enum lttng_tracker_type tracker_type) | |
847a5916 | 2412 | { |
dd49e13f | 2413 | int ret = 0, child; |
847a5916 JR |
2414 | xmlNodePtr targets_node = NULL; |
2415 | xmlNodePtr node; | |
96518a56 MD |
2416 | const char *element_id_tracker; |
2417 | const char *element_target_id; | |
2418 | const char *element_id; | |
2419 | const char *element_id_alias; | |
2420 | const char *element_name; | |
847a5916 JR |
2421 | |
2422 | assert(handle); | |
96518a56 MD |
2423 | assert(id_tracker_node); |
2424 | ||
2425 | ret = get_tracker_elements(tracker_type, &element_id_tracker, | |
2426 | &element_target_id, &element_id, &element_id_alias, &element_name); | |
2427 | if (ret) { | |
2428 | return ret; | |
2429 | } | |
2430 | ||
847a5916 | 2431 | /* get the targets node */ |
96518a56 | 2432 | for (node = xmlFirstElementChild(id_tracker_node); node; |
847a5916 JR |
2433 | node = xmlNextElementSibling(node)) { |
2434 | if (!strcmp((const char *) node->name, | |
2435 | config_element_targets)) { | |
2436 | targets_node = node; | |
2437 | break; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | if (!targets_node) { | |
2442 | ret = LTTNG_ERR_INVALID; | |
2443 | goto end; | |
2444 | } | |
2445 | ||
96518a56 | 2446 | /* Go through all id target node */ |
847a5916 JR |
2447 | child = xmlChildElementCount(targets_node); |
2448 | if (child == 0) { | |
96518a56 MD |
2449 | struct lttng_tracker_id tracker_id; |
2450 | ||
2451 | tracker_id.type = LTTNG_ID_ALL; | |
847a5916 | 2452 | /* The session is explicitly set to target nothing. */ |
96518a56 | 2453 | ret = lttng_untrack_id(handle, tracker_type, &tracker_id); |
847a5916 JR |
2454 | if (ret) { |
2455 | goto end; | |
2456 | } | |
2457 | } | |
2458 | for (node = xmlFirstElementChild(targets_node); node; | |
2459 | node = xmlNextElementSibling(node)) { | |
96518a56 | 2460 | xmlNodePtr id_target_node = node; |
847a5916 | 2461 | |
96518a56 MD |
2462 | /* get id node and track it */ |
2463 | for (node = xmlFirstElementChild(id_target_node); node; | |
847a5916 | 2464 | node = xmlNextElementSibling(node)) { |
96518a56 MD |
2465 | if (!strcmp((const char *) node->name, element_id) || |
2466 | (element_id_alias && !strcmp((const char *) node->name, | |
2467 | element_id_alias))) { | |
2468 | int64_t id; | |
847a5916 | 2469 | xmlChar *content = NULL; |
96518a56 | 2470 | struct lttng_tracker_id tracker_id; |
847a5916 JR |
2471 | |
2472 | content = xmlNodeGetContent(node); | |
2473 | if (!content) { | |
2474 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2475 | goto end; | |
2476 | } | |
2477 | ||
96518a56 | 2478 | ret = parse_int(content, &id); |
847a5916 JR |
2479 | free(content); |
2480 | if (ret) { | |
2481 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2482 | goto end; | |
2483 | } | |
2484 | ||
96518a56 MD |
2485 | tracker_id.type = LTTNG_ID_VALUE; |
2486 | tracker_id.value = (int) id; | |
2487 | ret = lttng_track_id(handle, tracker_type, &tracker_id); | |
2488 | if (ret) { | |
2489 | goto end; | |
2490 | } | |
2491 | } | |
2492 | if (element_name && !strcmp((const char *) node->name, | |
2493 | element_name)) { | |
2494 | xmlChar *content = NULL; | |
2495 | struct lttng_tracker_id tracker_id; | |
2496 | ||
2497 | content = xmlNodeGetContent(node); | |
2498 | if (!content) { | |
2499 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2500 | goto end; | |
2501 | } | |
2502 | tracker_id.type = LTTNG_ID_STRING; | |
2503 | tracker_id.string = (char *) content; | |
2504 | ret = lttng_track_id(handle, tracker_type, &tracker_id); | |
2505 | free(content); | |
847a5916 JR |
2506 | if (ret) { |
2507 | goto end; | |
2508 | } | |
2509 | } | |
2510 | } | |
96518a56 | 2511 | node = id_target_node; |
847a5916 JR |
2512 | } |
2513 | ||
2514 | end: | |
2515 | return ret; | |
2516 | } | |
2517 | ||
dcf266c0 JG |
2518 | static |
2519 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2520 | { | |
2521 | int ret; | |
2522 | struct lttng_domain domain = { 0 }; | |
2523 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2524 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2525 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2526 | xmlNodePtr trackers_node = NULL; |
2527 | xmlNodePtr pid_tracker_node = NULL; | |
96518a56 MD |
2528 | xmlNodePtr vpid_tracker_node = NULL; |
2529 | xmlNodePtr uid_tracker_node = NULL; | |
2530 | xmlNodePtr vuid_tracker_node = NULL; | |
2531 | xmlNodePtr gid_tracker_node = NULL; | |
2532 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2533 | xmlNodePtr node; |
2534 | ||
2535 | assert(session_name); | |
2536 | ||
2537 | ret = init_domain(domain_node, &domain); | |
2538 | if (ret) { | |
2539 | goto end; | |
2540 | } | |
2541 | ||
2542 | handle = lttng_create_handle(session_name, &domain); | |
2543 | if (!handle) { | |
2544 | ret = -LTTNG_ERR_NOMEM; | |
2545 | goto end; | |
2546 | } | |
2547 | ||
2548 | /* get the channels node */ | |
2549 | for (node = xmlFirstElementChild(domain_node); node; | |
2550 | node = xmlNextElementSibling(node)) { | |
2551 | if (!strcmp((const char *) node->name, | |
2552 | config_element_channels)) { | |
2553 | channels_node = node; | |
2554 | break; | |
2555 | } | |
2556 | } | |
2557 | ||
2558 | if (!channels_node) { | |
2559 | goto end; | |
2560 | } | |
2561 | ||
2562 | /* create all channels */ | |
2563 | for (node = xmlFirstElementChild(channels_node); node; | |
2564 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2565 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2566 | xmlNodePtr contexts_node = NULL; |
2567 | xmlNodePtr events_node = NULL; | |
2568 | xmlNodePtr channel_attr_node; | |
2569 | ||
36d1687c JG |
2570 | /* |
2571 | * Channels of the "agent" types cannot be created directly. | |
2572 | * They are meant to be created implicitly through the | |
2573 | * activation of events in their domain. However, a user | |
2574 | * can override the default channel configuration attributes | |
2575 | * by creating the underlying UST channel _before_ enabling | |
2576 | * an agent domain event. | |
2577 | * | |
2578 | * Hence, the channel's type is substituted before the creation | |
2579 | * and restored by the time the events are created. | |
2580 | */ | |
2581 | switch (domain.type) { | |
2582 | case LTTNG_DOMAIN_JUL: | |
2583 | case LTTNG_DOMAIN_LOG4J: | |
2584 | case LTTNG_DOMAIN_PYTHON: | |
2585 | domain.type = LTTNG_DOMAIN_UST; | |
2586 | default: | |
2587 | break; | |
2588 | } | |
2589 | ||
4fc2b126 JR |
2590 | channel = lttng_channel_create(&domain); |
2591 | if (!channel) { | |
2592 | ret = -1; | |
2593 | goto end; | |
2594 | } | |
dcf266c0 JG |
2595 | |
2596 | for (channel_attr_node = xmlFirstElementChild(node); | |
2597 | channel_attr_node; channel_attr_node = | |
2598 | xmlNextElementSibling(channel_attr_node)) { | |
2599 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2600 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2601 | if (ret) { |
2602 | goto end; | |
2603 | } | |
2604 | } | |
2605 | ||
4fc2b126 | 2606 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2607 | if (ret < 0) { |
2608 | goto end; | |
2609 | } | |
2610 | ||
36d1687c JG |
2611 | /* Restore the original channel domain. */ |
2612 | domain.type = original_domain; | |
2613 | ||
4fc2b126 | 2614 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2615 | if (ret) { |
2616 | goto end; | |
2617 | } | |
2618 | ||
2619 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2620 | channel->name); |
dcf266c0 JG |
2621 | if (ret) { |
2622 | goto end; | |
2623 | } | |
4fc2b126 JR |
2624 | |
2625 | lttng_channel_destroy(channel); | |
dcf266c0 | 2626 | } |
4fc2b126 | 2627 | channel = NULL; |
847a5916 JR |
2628 | |
2629 | /* get the trackers node */ | |
2630 | for (node = xmlFirstElementChild(domain_node); node; | |
2631 | node = xmlNextElementSibling(node)) { | |
2632 | if (!strcmp((const char *) node->name, | |
2633 | config_element_trackers)) { | |
2634 | trackers_node = node; | |
2635 | break; | |
2636 | } | |
2637 | } | |
2638 | ||
2639 | if (!trackers_node) { | |
2640 | goto end; | |
2641 | } | |
2642 | ||
2643 | for (node = xmlFirstElementChild(trackers_node); node; | |
2644 | node = xmlNextElementSibling(node)) { | |
96518a56 | 2645 | if (!strcmp((const char *)node->name, config_element_pid_tracker)) { |
847a5916 | 2646 | pid_tracker_node = node; |
96518a56 MD |
2647 | ret = process_id_tracker_node(pid_tracker_node, handle, |
2648 | LTTNG_TRACKER_PID); | |
2649 | if (ret) { | |
2650 | goto end; | |
2651 | } | |
2652 | } | |
2653 | if (!strcmp((const char *)node->name, config_element_vpid_tracker)) { | |
2654 | vpid_tracker_node = node; | |
2655 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
2656 | LTTNG_TRACKER_VPID); | |
2657 | if (ret) { | |
2658 | goto end; | |
2659 | } | |
2660 | } | |
2661 | if (!strcmp((const char *)node->name, config_element_uid_tracker)) { | |
2662 | uid_tracker_node = node; | |
2663 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
2664 | LTTNG_TRACKER_UID); | |
2665 | if (ret) { | |
2666 | goto end; | |
2667 | } | |
2668 | } | |
2669 | if (!strcmp((const char *)node->name, config_element_vuid_tracker)) { | |
2670 | vuid_tracker_node = node; | |
2671 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
2672 | LTTNG_TRACKER_VUID); | |
2673 | if (ret) { | |
2674 | goto end; | |
2675 | } | |
2676 | } | |
2677 | if (!strcmp((const char *)node->name, config_element_gid_tracker)) { | |
2678 | gid_tracker_node = node; | |
2679 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
2680 | LTTNG_TRACKER_GID); | |
2681 | if (ret) { | |
2682 | goto end; | |
2683 | } | |
2684 | } | |
2685 | if (!strcmp((const char *)node->name, config_element_vgid_tracker)) { | |
2686 | vgid_tracker_node = node; | |
2687 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
2688 | LTTNG_TRACKER_VGID); | |
847a5916 JR |
2689 | if (ret) { |
2690 | goto end; | |
2691 | } | |
2692 | } | |
847a5916 JR |
2693 | } |
2694 | ||
dcf266c0 | 2695 | end: |
4fc2b126 | 2696 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2697 | lttng_destroy_handle(handle); |
2698 | return ret; | |
2699 | } | |
2700 | ||
2701 | static | |
2702 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
2703 | int overwrite, |
2704 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2705 | { |
2706 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 2707 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
2708 | rotation_timer_interval = 0, |
2709 | rotation_size = 0; | |
d324faf7 | 2710 | xmlChar *name = NULL; |
9e7c9f56 | 2711 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2712 | xmlNodePtr domains_node = NULL; |
2713 | xmlNodePtr output_node = NULL; | |
2714 | xmlNodePtr node; | |
90936dcf | 2715 | xmlNodePtr attributes_child; |
dcf266c0 JG |
2716 | struct lttng_domain *kernel_domain = NULL; |
2717 | struct lttng_domain *ust_domain = NULL; | |
2718 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2719 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2720 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2721 | |
2722 | for (node = xmlFirstElementChild(session_node); node; | |
2723 | node = xmlNextElementSibling(node)) { | |
2724 | if (!name && !strcmp((const char *) node->name, | |
2725 | config_element_name)) { | |
2726 | /* name */ | |
2727 | xmlChar *node_content = xmlNodeGetContent(node); | |
2728 | if (!node_content) { | |
2729 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2730 | goto error; |
dcf266c0 JG |
2731 | } |
2732 | ||
d324faf7 | 2733 | name = node_content; |
dcf266c0 JG |
2734 | } else if (!domains_node && !strcmp((const char *) node->name, |
2735 | config_element_domains)) { | |
2736 | /* domains */ | |
2737 | domains_node = node; | |
2738 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2739 | config_element_started)) { | |
2740 | /* started */ | |
2741 | xmlChar *node_content = xmlNodeGetContent(node); | |
2742 | if (!node_content) { | |
2743 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2744 | goto error; |
dcf266c0 JG |
2745 | } |
2746 | ||
2747 | ret = parse_bool(node_content, &started); | |
2748 | free(node_content); | |
2749 | if (ret) { | |
2750 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2751 | goto error; |
dcf266c0 JG |
2752 | } |
2753 | } else if (!output_node && !strcmp((const char *) node->name, | |
2754 | config_element_output)) { | |
2755 | /* output */ | |
2756 | output_node = node; | |
9e7c9f56 JR |
2757 | } else if (!shm_path && !strcmp((const char *) node->name, |
2758 | config_element_shared_memory_path)) { | |
2759 | /* shared memory path */ | |
2760 | xmlChar *node_content = xmlNodeGetContent(node); | |
2761 | if (!node_content) { | |
2762 | ret = -LTTNG_ERR_NOMEM; | |
2763 | goto error; | |
2764 | } | |
2765 | ||
2766 | shm_path = node_content; | |
dcf266c0 | 2767 | } else { |
259c2674 JD |
2768 | /* |
2769 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
2770 | * rotation_timer_interval. |
2771 | */ | |
2772 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
2773 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
2774 | if (!strcmp((const char *) attributes_child->name, | |
2775 | config_element_snapshot_mode)) { | |
2776 | /* snapshot_mode */ | |
2777 | xmlChar *snapshot_mode_content = | |
2778 | xmlNodeGetContent(attributes_child); | |
2779 | if (!snapshot_mode_content) { | |
2780 | ret = -LTTNG_ERR_NOMEM; | |
2781 | goto error; | |
2782 | } | |
dcf266c0 | 2783 | |
90936dcf JD |
2784 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
2785 | free(snapshot_mode_content); | |
2786 | if (ret) { | |
2787 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2788 | goto error; | |
2789 | } | |
2790 | } else if (!strcmp((const char *) attributes_child->name, | |
2791 | config_element_live_timer_interval)) { | |
2792 | /* live_timer_interval */ | |
2793 | xmlChar *timer_interval_content = | |
2794 | xmlNodeGetContent(attributes_child); | |
2795 | if (!timer_interval_content) { | |
2796 | ret = -LTTNG_ERR_NOMEM; | |
2797 | goto error; | |
2798 | } | |
dcf266c0 | 2799 | |
90936dcf JD |
2800 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
2801 | free(timer_interval_content); | |
2802 | if (ret) { | |
2803 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2804 | goto error; | |
2805 | } | |
dcf266c0 | 2806 | } |
90936dcf JD |
2807 | if (!strcmp((const char *) attributes_child->name, |
2808 | config_element_rotation_timer_interval)) { | |
2809 | /* rotation_timer_interval */ | |
2810 | xmlChar *timer_interval_content = | |
2811 | xmlNodeGetContent(attributes_child); | |
2812 | if (!timer_interval_content) { | |
2813 | ret = -LTTNG_ERR_NOMEM; | |
2814 | goto error; | |
2815 | } | |
2816 | ||
2817 | ret = parse_uint(timer_interval_content, &rotation_timer_interval); | |
2818 | free(timer_interval_content); | |
2819 | if (ret) { | |
2820 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2821 | goto error; | |
2822 | } | |
259c2674 | 2823 | } |
90936dcf JD |
2824 | if (!strcmp((const char *) attributes_child->name, |
2825 | config_element_rotation_size)) { | |
2826 | /* rotation_size */ | |
2827 | xmlChar *rotation_size_content = | |
2828 | xmlNodeGetContent(attributes_child); | |
2829 | if (!rotation_size_content) { | |
2830 | ret = -LTTNG_ERR_NOMEM; | |
2831 | goto error; | |
2832 | } | |
259c2674 | 2833 | |
90936dcf JD |
2834 | ret = parse_uint(rotation_size_content, &rotation_size); |
2835 | free(rotation_size_content); | |
2836 | if (ret) { | |
2837 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2838 | goto error; | |
2839 | } | |
259c2674 JD |
2840 | } |
2841 | } | |
dcf266c0 JG |
2842 | } |
2843 | } | |
2844 | ||
2845 | if (!name) { | |
2846 | /* Mandatory attribute, as defined in the session XSD */ | |
2847 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2848 | goto error; |
dcf266c0 JG |
2849 | } |
2850 | ||
d324faf7 | 2851 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2852 | /* This is not the session we are looking for */ |
c2da8cde DG |
2853 | ret = -LTTNG_ERR_NO_SESSION; |
2854 | goto error; | |
dcf266c0 JG |
2855 | } |
2856 | ||
2857 | /* Init domains to create the session handles */ | |
2858 | for (node = xmlFirstElementChild(domains_node); node; | |
2859 | node = xmlNextElementSibling(node)) { | |
2860 | struct lttng_domain *domain; | |
2861 | ||
2862 | domain = zmalloc(sizeof(*domain)); | |
2863 | if (!domain) { | |
2864 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2865 | goto error; |
dcf266c0 JG |
2866 | } |
2867 | ||
2868 | ret = init_domain(node, domain); | |
2869 | if (ret) { | |
2870 | goto domain_init_error; | |
2871 | } | |
2872 | ||
2873 | switch (domain->type) { | |
2874 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2875 | if (kernel_domain) { |
2876 | /* Same domain seen twice, invalid! */ | |
2877 | goto domain_init_error; | |
2878 | } | |
dcf266c0 JG |
2879 | kernel_domain = domain; |
2880 | break; | |
2881 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2882 | if (ust_domain) { |
2883 | /* Same domain seen twice, invalid! */ | |
2884 | goto domain_init_error; | |
2885 | } | |
dcf266c0 JG |
2886 | ust_domain = domain; |
2887 | break; | |
2888 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2889 | if (jul_domain) { |
2890 | /* Same domain seen twice, invalid! */ | |
2891 | goto domain_init_error; | |
2892 | } | |
dcf266c0 JG |
2893 | jul_domain = domain; |
2894 | break; | |
5cdb6027 DG |
2895 | case LTTNG_DOMAIN_LOG4J: |
2896 | if (log4j_domain) { | |
2897 | /* Same domain seen twice, invalid! */ | |
2898 | goto domain_init_error; | |
2899 | } | |
2900 | log4j_domain = domain; | |
2901 | break; | |
0e115563 DG |
2902 | case LTTNG_DOMAIN_PYTHON: |
2903 | if (python_domain) { | |
2904 | /* Same domain seen twice, invalid! */ | |
2905 | goto domain_init_error; | |
2906 | } | |
2907 | python_domain = domain; | |
2908 | break; | |
dcf266c0 JG |
2909 | default: |
2910 | WARN("Invalid domain type"); | |
2911 | goto domain_init_error; | |
2912 | } | |
2913 | continue; | |
2914 | domain_init_error: | |
2915 | free(domain); | |
2916 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2917 | goto error; |
dcf266c0 JG |
2918 | } |
2919 | ||
2aaf5fc7 JR |
2920 | /* Apply overrides */ |
2921 | if (overrides) { | |
2922 | if (overrides->session_name) { | |
2923 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
2924 | if (!name_override) { | |
2925 | ret = -LTTNG_ERR_NOMEM; | |
2926 | goto error; | |
2927 | } | |
2928 | ||
2929 | /* Overrides the session name to the provided name */ | |
2930 | xmlFree(name); | |
2931 | name = name_override; | |
2932 | } | |
2933 | } | |
2934 | ||
40b4155f | 2935 | if (overwrite) { |
dcf266c0 | 2936 | /* Destroy session if it exists */ |
d324faf7 | 2937 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2938 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2939 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2940 | goto error; |
dcf266c0 JG |
2941 | } |
2942 | } | |
2943 | ||
2944 | /* Create session type depending on output type */ | |
2945 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
2946 | ret = create_snapshot_session((const char *) name, output_node, |
2947 | overrides); | |
dcf266c0 JG |
2948 | } else if (live_timer_interval && |
2949 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 2950 | ret = create_session((const char *) name, |
1b08cbce | 2951 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
2952 | } else { |
2953 | /* regular session */ | |
194dfca0 | 2954 | ret = create_session((const char *) name, |
1b08cbce | 2955 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 2956 | } |
dcf266c0 | 2957 | if (ret) { |
c2da8cde | 2958 | goto error; |
dcf266c0 JG |
2959 | } |
2960 | ||
9e7c9f56 JR |
2961 | if (shm_path) { |
2962 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2963 | (const char *) shm_path); |
9e7c9f56 JR |
2964 | if (ret) { |
2965 | goto error; | |
2966 | } | |
2967 | } | |
2968 | ||
dcf266c0 JG |
2969 | for (node = xmlFirstElementChild(domains_node); node; |
2970 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2971 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2972 | if (ret) { |
2973 | goto end; | |
2974 | } | |
2975 | } | |
2976 | ||
90936dcf | 2977 | if (rotation_timer_interval || rotation_size) { |
259c2674 JD |
2978 | struct lttng_rotation_schedule_attr *rotation_attr = lttng_rotation_schedule_attr_create(); |
2979 | ||
2980 | if (!rotation_attr) { | |
2981 | goto error; | |
2982 | } | |
2983 | ret = lttng_rotation_schedule_attr_set_session_name(rotation_attr, (const char *) name); | |
2984 | if (ret) { | |
2985 | lttng_rotation_schedule_attr_destroy(rotation_attr); | |
2986 | goto error; | |
2987 | } | |
2988 | lttng_rotation_schedule_attr_set_timer_period(rotation_attr, | |
2989 | rotation_timer_interval); | |
90936dcf | 2990 | lttng_rotation_schedule_attr_set_size(rotation_attr, rotation_size); |
259c2674 JD |
2991 | ret = lttng_rotation_set_schedule(rotation_attr); |
2992 | lttng_rotation_schedule_attr_destroy(rotation_attr); | |
2993 | if (ret) { | |
2994 | goto error; | |
2995 | } | |
2996 | } | |
2997 | ||
dcf266c0 | 2998 | if (started) { |
d324faf7 | 2999 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3000 | if (ret) { |
3001 | goto end; | |
3002 | } | |
3003 | } | |
c2da8cde | 3004 | |
dcf266c0 | 3005 | end: |
b2579dc1 | 3006 | if (ret < 0) { |
d324faf7 JG |
3007 | ERR("Failed to load session %s: %s", (const char *) name, |
3008 | lttng_strerror(ret)); | |
3009 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3010 | } |
3011 | ||
c2da8cde | 3012 | error: |
dcf266c0 JG |
3013 | free(kernel_domain); |
3014 | free(ust_domain); | |
3015 | free(jul_domain); | |
5cdb6027 | 3016 | free(log4j_domain); |
135a3893 | 3017 | free(python_domain); |
d324faf7 | 3018 | xmlFree(name); |
9e7c9f56 | 3019 | xmlFree(shm_path); |
dcf266c0 JG |
3020 | return ret; |
3021 | } | |
3022 | ||
cf53c06d DG |
3023 | /* |
3024 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3025 | * Return -1 if the path is EPERM. | |
3026 | */ | |
3027 | static int validate_file_read_creds(const char *path) | |
3028 | { | |
3029 | int ret; | |
3030 | ||
3031 | assert(path); | |
3032 | ||
3033 | /* Can we read the file. */ | |
3034 | ret = access(path, R_OK); | |
3035 | if (!ret) { | |
3036 | goto valid; | |
3037 | } | |
3038 | if (errno == EACCES) { | |
3039 | return -1; | |
3040 | } else { | |
3041 | /* Invalid. */ | |
3042 | return 0; | |
3043 | } | |
3044 | valid: | |
3045 | return 1; | |
3046 | } | |
3047 | ||
dcf266c0 JG |
3048 | static |
3049 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3050 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3051 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3052 | { |
3053 | int ret, session_found = !session_name; | |
3054 | xmlDocPtr doc = NULL; | |
3055 | xmlNodePtr sessions_node; | |
3056 | xmlNodePtr session_node; | |
dcf266c0 JG |
3057 | |
3058 | assert(path); | |
3059 | assert(validation_ctx); | |
3060 | ||
cf53c06d DG |
3061 | ret = validate_file_read_creds(path); |
3062 | if (ret != 1) { | |
3063 | if (ret == -1) { | |
3064 | ret = -LTTNG_ERR_EPERM; | |
3065 | } else { | |
3066 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3067 | } | |
dcf266c0 JG |
3068 | goto end; |
3069 | } | |
3070 | ||
3071 | doc = xmlParseFile(path); | |
3072 | if (!doc) { | |
3073 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3074 | goto end; | |
3075 | } | |
3076 | ||
3077 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3078 | if (ret) { | |
3079 | ERR("Session configuration file validation failed"); | |
3080 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3081 | goto end; | |
3082 | } | |
3083 | ||
3084 | sessions_node = xmlDocGetRootElement(doc); | |
3085 | if (!sessions_node) { | |
96518a56 | 3086 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3087 | goto end; |
3088 | } | |
3089 | ||
3090 | for (session_node = xmlFirstElementChild(sessions_node); | |
3091 | session_node; session_node = | |
3092 | xmlNextElementSibling(session_node)) { | |
3093 | ret = process_session_node(session_node, | |
1b08cbce | 3094 | session_name, overwrite, overrides); |
dcf266c0 JG |
3095 | if (session_name && ret == 0) { |
3096 | /* Target session found and loaded */ | |
3097 | session_found = 1; | |
3098 | break; | |
3099 | } | |
3100 | } | |
3101 | end: | |
3102 | xmlFreeDoc(doc); | |
3103 | if (!ret) { | |
a96bc65d | 3104 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 | 3105 | } |
96518a56 MD |
3106 | if (ret == -LTTNG_ERR_NO_SESSION) { |
3107 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3108 | } | |
dcf266c0 JG |
3109 | return ret; |
3110 | } | |
3111 | ||
3112 | static | |
3113 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3114 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3115 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3116 | { |
3117 | int ret, session_found = !session_name; | |
dcf266c0 | 3118 | DIR *directory = NULL; |
cce35f91 JG |
3119 | struct lttng_dynamic_buffer file_path; |
3120 | size_t path_len; | |
dcf266c0 JG |
3121 | |
3122 | assert(path); | |
3123 | assert(validation_ctx); | |
cce35f91 JG |
3124 | path_len = strlen(path); |
3125 | lttng_dynamic_buffer_init(&file_path); | |
3126 | if (path_len >= LTTNG_PATH_MAX) { | |
3127 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3128 | path, path_len, LTTNG_PATH_MAX); | |
3129 | ret = -LTTNG_ERR_INVALID; | |
3130 | goto end; | |
3131 | } | |
dcf266c0 | 3132 | |
4af16958 DG |
3133 | directory = opendir(path); |
3134 | if (!directory) { | |
11143783 DG |
3135 | switch (errno) { |
3136 | case ENOTDIR: | |
0f0a81b5 DG |
3137 | /* Try the file loading. */ |
3138 | break; | |
11143783 DG |
3139 | case ENOENT: |
3140 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3141 | goto end; | |
3142 | default: | |
0f0a81b5 DG |
3143 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3144 | goto end; | |
4af16958 | 3145 | } |
dcf266c0 | 3146 | } |
4af16958 | 3147 | if (directory) { |
cce35f91 | 3148 | size_t file_path_root_len; |
dcf266c0 | 3149 | |
cce35f91 JG |
3150 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3151 | LTTNG_PATH_MAX); | |
3152 | if (ret) { | |
3153 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3154 | goto end; |
3155 | } | |
3156 | ||
cce35f91 JG |
3157 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3158 | if (ret) { | |
dcf266c0 | 3159 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3160 | goto end; |
3161 | } | |
3162 | ||
cce35f91 JG |
3163 | if (file_path.data[file_path.size - 1] != '/') { |
3164 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3165 | if (ret) { | |
3166 | ret = -LTTNG_ERR_NOMEM; | |
3167 | goto end; | |
3168 | } | |
dcf266c0 | 3169 | } |
cce35f91 | 3170 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3171 | |
3172 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3173 | for (;;) { |
3174 | size_t file_name_len; | |
3175 | struct dirent *result; | |
3176 | ||
3177 | /* | |
3178 | * When the end of the directory stream is reached, NULL | |
3179 | * is returned and errno is kept unchanged. When an | |
3180 | * error occurs, NULL is returned and errno is set | |
3181 | * accordingly. To distinguish between the two, set | |
3182 | * errno to zero before calling readdir(). | |
3183 | * | |
3184 | * On success, readdir() returns a pointer to a dirent | |
3185 | * structure. This structure may be statically | |
3186 | * allocated, do not attempt to free(3) it. | |
3187 | */ | |
3188 | errno = 0; | |
3189 | result = readdir(directory); | |
3190 | ||
ff86d8d0 | 3191 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3192 | if (!result) { |
3193 | if (errno) { | |
3194 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3195 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3196 | goto end; | |
3197 | } | |
3198 | break; | |
3199 | } | |
3200 | ||
3201 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3202 | |
3203 | if (file_name_len <= | |
3204 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3205 | continue; | |
3206 | } | |
3207 | ||
cce35f91 JG |
3208 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3209 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3210 | result->d_name, | |
3211 | /* +1 to account for NULL terminator. */ | |
3212 | file_path.size + file_name_len + 1, | |
3213 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3214 | continue; |
3215 | } | |
3216 | ||
cce35f91 | 3217 | /* Does the file end with .lttng? */ |
dcf266c0 | 3218 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3219 | result->d_name + file_name_len - sizeof( |
3220 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3221 | continue; |
3222 | } | |
3223 | ||
cce35f91 JG |
3224 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3225 | file_name_len + 1); | |
3226 | if (ret) { | |
3227 | ret = -LTTNG_ERR_NOMEM; | |
3228 | goto end; | |
3229 | } | |
dcf266c0 | 3230 | |
cce35f91 | 3231 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3232 | validation_ctx, overwrite, overrides); |
96518a56 | 3233 | if (session_name && (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { |
dcf266c0 JG |
3234 | session_found = 1; |
3235 | break; | |
3236 | } | |
96518a56 MD |
3237 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3238 | goto end; | |
3239 | } | |
cce35f91 JG |
3240 | /* |
3241 | * Reset the buffer's size to the location of the | |
3242 | * path's trailing '/'. | |
3243 | */ | |
3244 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3245 | file_path_root_len); | |
3246 | if (ret) { | |
3247 | ret = -LTTNG_ERR_UNK; | |
3248 | goto end; | |
3249 | } | |
dcf266c0 | 3250 | } |
dcf266c0 JG |
3251 | } else { |
3252 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3253 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3254 | if (ret) { |
3255 | goto end; | |
dcf266c0 | 3256 | } |
96518a56 | 3257 | session_found = 1; |
dcf266c0 JG |
3258 | } |
3259 | ||
96518a56 | 3260 | ret = 0; |
dcf266c0 JG |
3261 | end: |
3262 | if (directory) { | |
3263 | if (closedir(directory)) { | |
3264 | PERROR("closedir"); | |
3265 | } | |
3266 | } | |
96518a56 MD |
3267 | if (!ret && !session_found) { |
3268 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3269 | } |
cce35f91 | 3270 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3271 | return ret; |
3272 | } | |
3273 | ||
ab38c13f DG |
3274 | /* |
3275 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3276 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3277 | */ |
3278 | static int validate_path_creds(const char *path) | |
3279 | { | |
3280 | int ret, uid = getuid(); | |
3281 | struct stat buf; | |
3282 | ||
3283 | assert(path); | |
3284 | ||
cf53c06d | 3285 | if (uid == 0) { |
ab38c13f DG |
3286 | goto valid; |
3287 | } | |
3288 | ||
3289 | ret = stat(path, &buf); | |
3290 | if (ret < 0) { | |
3291 | if (errno != ENOENT) { | |
3292 | PERROR("stat"); | |
3293 | } | |
ab38c13f DG |
3294 | goto valid; |
3295 | } | |
3296 | ||
3297 | if (buf.st_uid != uid) { | |
3298 | goto invalid; | |
3299 | } | |
3300 | ||
3301 | valid: | |
ab38c13f | 3302 | return 1; |
cf53c06d DG |
3303 | invalid: |
3304 | return 0; | |
ab38c13f DG |
3305 | } |
3306 | ||
dcf266c0 JG |
3307 | LTTNG_HIDDEN |
3308 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3309 | int overwrite, unsigned int autoload, |
3310 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3311 | { |
3312 | int ret; | |
6c66fa0f | 3313 | bool session_loaded = false; |
cf53c06d | 3314 | const char *path_ptr = NULL; |
dcf266c0 JG |
3315 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3316 | ||
3317 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3318 | if (ret) { | |
3319 | goto end; | |
3320 | } | |
3321 | ||
3322 | if (!path) { | |
ab38c13f DG |
3323 | char *home_path; |
3324 | const char *sys_path; | |
3325 | ||
dcf266c0 | 3326 | /* Try home path */ |
ab38c13f | 3327 | home_path = utils_get_home_dir(); |
dcf266c0 | 3328 | if (home_path) { |
ab38c13f | 3329 | char path[PATH_MAX]; |
dcf266c0 | 3330 | |
d4fcf703 DG |
3331 | /* |
3332 | * Try user session configuration path. Ignore error here so we can | |
3333 | * continue loading the system wide sessions. | |
3334 | */ | |
ab38c13f DG |
3335 | if (autoload) { |
3336 | ret = snprintf(path, sizeof(path), | |
3337 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3338 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3339 | if (ret < 0) { |
3340 | PERROR("snprintf session autoload home config path"); | |
96518a56 | 3341 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3342 | goto end; |
3343 | } | |
3344 | ||
3345 | /* | |
3346 | * Credentials are only validated for the autoload in order to | |
3347 | * avoid any user session daemon to try to load kernel sessions | |
3348 | * automatically and failing all the times. | |
3349 | */ | |
3350 | ret = validate_path_creds(path); | |
3351 | if (ret) { | |
3352 | path_ptr = path; | |
3353 | } | |
ab38c13f DG |
3354 | } else { |
3355 | ret = snprintf(path, sizeof(path), | |
3356 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3357 | if (ret < 0) { |
3358 | PERROR("snprintf session home config path"); | |
96518a56 | 3359 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3360 | goto end; |
3361 | } | |
3362 | path_ptr = path; | |
ab38c13f | 3363 | } |
cf53c06d DG |
3364 | if (path_ptr) { |
3365 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3366 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3367 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3368 | goto end; | |
3369 | } | |
3370 | /* | |
3371 | * Continue even if the session was found since we have to try | |
3372 | * the system wide sessions. | |
3373 | */ | |
6c66fa0f | 3374 | session_loaded = true; |
ab38c13f | 3375 | } |
d4fcf703 | 3376 | } |
ab38c13f | 3377 | |
cf53c06d DG |
3378 | /* Reset path pointer for the system wide dir. */ |
3379 | path_ptr = NULL; | |
3380 | ||
d4fcf703 DG |
3381 | /* Try system wide configuration directory. */ |
3382 | if (autoload) { | |
3383 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3384 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3385 | ret = validate_path_creds(sys_path); |
3386 | if (ret) { | |
3387 | path_ptr = sys_path; | |
3388 | } | |
d4fcf703 | 3389 | } else { |
cf53c06d DG |
3390 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3391 | path_ptr = sys_path; | |
d4fcf703 DG |
3392 | } |
3393 | ||
cf53c06d DG |
3394 | if (path_ptr) { |
3395 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3396 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3397 | if (!ret) { |
3398 | session_loaded = true; | |
3399 | } | |
96518a56 MD |
3400 | } else { |
3401 | ret = 0; | |
dcf266c0 JG |
3402 | } |
3403 | } else { | |
3404 | ret = access(path, F_OK); | |
3405 | if (ret < 0) { | |
3406 | PERROR("access"); | |
3407 | switch (errno) { | |
3408 | case ENOENT: | |
3409 | ret = -LTTNG_ERR_INVALID; | |
3410 | WARN("Session configuration path does not exist."); | |
3411 | break; | |
3412 | case EACCES: | |
3413 | ret = -LTTNG_ERR_EPERM; | |
3414 | break; | |
3415 | default: | |
3416 | ret = -LTTNG_ERR_UNK; | |
3417 | break; | |
3418 | } | |
3419 | goto end; | |
3420 | } | |
3421 | ||
3422 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3423 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3424 | } |
3425 | end: | |
3426 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3427 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3428 | /* | |
3429 | * Don't report an error if no sessions are found when called | |
3430 | * without a session_name or a search path. | |
3431 | */ | |
3432 | ret = 0; | |
3433 | } | |
6c66fa0f JG |
3434 | |
3435 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3436 | /* A matching session was found in one of the search paths. */ | |
3437 | ret = 0; | |
3438 | } | |
dcf266c0 JG |
3439 | return ret; |
3440 | } | |
56766c75 JG |
3441 | |
3442 | static | |
3443 | void __attribute__((destructor)) session_config_exit(void) | |
3444 | { | |
3445 | xmlCleanupParser(); | |
3446 | } |