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> | |
e8fa9fb0 | 35 | #include <common/compat/getenv.h> |
fb198a11 JG |
36 | #include <lttng/lttng-error.h> |
37 | #include <libxml/parser.h> | |
38 | #include <libxml/valid.h> | |
39 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
40 | #include <libxml/tree.h> |
41 | #include <lttng/lttng.h> | |
42 | #include <lttng/snapshot.h> | |
259c2674 | 43 | #include <lttng/rotation.h> |
1501a7f3 | 44 | |
f40ef1d5 | 45 | #include "session-config.h" |
36f2332b | 46 | #include "config-internal.h" |
1501a7f3 JG |
47 | |
48 | struct handler_filter_args { | |
49 | const char* section; | |
50 | config_entry_handler_cb handler; | |
51 | void *user_data; | |
52 | }; | |
53 | ||
dcf266c0 JG |
54 | struct session_config_validation_ctx { |
55 | xmlSchemaParserCtxtPtr parser_ctx; | |
56 | xmlSchemaPtr schema; | |
57 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
58 | }; | |
59 | ||
1501a7f3 JG |
60 | const char * const config_str_yes = "yes"; |
61 | const char * const config_str_true = "true"; | |
62 | const char * const config_str_on = "on"; | |
63 | const char * const config_str_no = "no"; | |
64 | const char * const config_str_false = "false"; | |
65 | const char * const config_str_off = "off"; | |
36f2332b | 66 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 67 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
68 | const char * const config_xml_indent_string = "\t"; |
69 | const char * const config_xml_true = "true"; | |
70 | const char * const config_xml_false = "false"; | |
1501a7f3 | 71 | |
fb198a11 JG |
72 | const char * const config_element_channel = "channel"; |
73 | const char * const config_element_channels = "channels"; | |
74 | const char * const config_element_domain = "domain"; | |
75 | const char * const config_element_domains = "domains"; | |
76 | const char * const config_element_event = "event"; | |
77 | const char * const config_element_events = "events"; | |
78 | const char * const config_element_context = "context"; | |
79 | const char * const config_element_contexts = "contexts"; | |
80 | const char * const config_element_attributes = "attributes"; | |
81 | const char * const config_element_exclusion = "exclusion"; | |
82 | const char * const config_element_exclusions = "exclusions"; | |
83 | const char * const config_element_function_attributes = "function_attributes"; | |
84 | const char * const config_element_probe_attributes = "probe_attributes"; | |
85 | const char * const config_element_symbol_name = "symbol_name"; | |
86 | const char * const config_element_address = "address"; | |
87 | const char * const config_element_offset = "offset"; | |
88 | const char * const config_element_name = "name"; | |
89 | const char * const config_element_enabled = "enabled"; | |
90 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
91 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
92 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
93 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
94 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
95 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
96 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
97 | const char * const config_element_output = "output"; |
98 | const char * const config_element_output_type = "output_type"; | |
99 | const char * const config_element_tracefile_size = "tracefile_size"; | |
100 | const char * const config_element_tracefile_count = "tracefile_count"; | |
101 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
102 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
103 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
104 | const char * const config_element_type = "type"; |
105 | const char * const config_element_buffer_type = "buffer_type"; | |
106 | const char * const config_element_session = "session"; | |
107 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
108 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
109 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
110 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
111 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
112 | const char * const config_element_config = "config"; |
113 | const char * const config_element_started = "started"; | |
114 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
115 | const char * const config_element_loglevel = "loglevel"; | |
116 | const char * const config_element_loglevel_type = "loglevel_type"; | |
117 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 118 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
119 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
120 | const char * const config_element_consumer_output = "consumer_output"; | |
121 | const char * const config_element_destination = "destination"; | |
122 | const char * const config_element_path = "path"; | |
123 | const char * const config_element_net_output = "net_output"; | |
124 | const char * const config_element_control_uri = "control_uri"; | |
125 | const char * const config_element_data_uri = "data_uri"; | |
126 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
127 | const char * const config_element_pid = "pid"; |
128 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 129 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
130 | const char * const config_element_pid_tracker = "pid_tracker"; |
131 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
132 | const char * const config_element_targets = "targets"; |
133 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 | 134 | |
259c2674 | 135 | LTTNG_HIDDEN const char * const config_element_rotation_timer_interval = "rotation_schedule_timer_period"; |
329f3443 | 136 | LTTNG_HIDDEN const char * const config_element_rotation_size = "rotation_schedule_size"; |
259c2674 JD |
137 | LTTNG_HIDDEN const char * const config_element_rotation_schedule = "rotation_schedule"; |
138 | ||
fb198a11 JG |
139 | const char * const config_domain_type_kernel = "KERNEL"; |
140 | const char * const config_domain_type_ust = "UST"; | |
141 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 142 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 143 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
144 | |
145 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
146 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
147 | const char * const config_buffer_type_global = "GLOBAL"; | |
148 | ||
149 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
150 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
151 | ||
152 | const char * const config_output_type_splice = "SPLICE"; | |
153 | const char * const config_output_type_mmap = "MMAP"; | |
154 | ||
155 | const char * const config_loglevel_type_all = "ALL"; | |
156 | const char * const config_loglevel_type_range = "RANGE"; | |
157 | const char * const config_loglevel_type_single = "SINGLE"; | |
158 | ||
159 | const char * const config_event_type_all = "ALL"; | |
160 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
161 | const char * const config_event_type_probe = "PROBE"; | |
162 | const char * const config_event_type_function = "FUNCTION"; | |
163 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
164 | const char * const config_event_type_noop = "NOOP"; | |
165 | const char * const config_event_type_syscall = "SYSCALL"; | |
166 | const char * const config_event_type_kprobe = "KPROBE"; | |
167 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
168 | ||
169 | const char * const config_event_context_pid = "PID"; | |
170 | const char * const config_event_context_procname = "PROCNAME"; | |
171 | const char * const config_event_context_prio = "PRIO"; | |
172 | const char * const config_event_context_nice = "NICE"; | |
173 | const char * const config_event_context_vpid = "VPID"; | |
174 | const char * const config_event_context_tid = "TID"; | |
175 | const char * const config_event_context_vtid = "VTID"; | |
176 | const char * const config_event_context_ppid = "PPID"; | |
177 | const char * const config_event_context_vppid = "VPPID"; | |
178 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
179 | const char * const config_event_context_hostname = "HOSTNAME"; | |
180 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 181 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
182 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
183 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
184 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
185 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
186 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
fb198a11 | 187 | |
fbd987c9 JG |
188 | /* Deprecated symbols */ |
189 | const char * const config_element_perf; | |
190 | ||
d7b645e2 JR |
191 | enum process_event_node_phase { |
192 | CREATION = 0, | |
193 | ENABLE = 1, | |
194 | }; | |
195 | ||
dcf266c0 JG |
196 | struct consumer_output { |
197 | int enabled; | |
198 | char *path; | |
199 | char *control_uri; | |
200 | char *data_uri; | |
201 | }; | |
202 | ||
1501a7f3 JG |
203 | static int config_entry_handler_filter(struct handler_filter_args *args, |
204 | const char *section, const char *name, const char *value) | |
205 | { | |
206 | int ret = 0; | |
207 | struct config_entry entry = { section, name, value }; | |
208 | ||
209 | assert(args); | |
210 | ||
211 | if (!section || !name || !value) { | |
212 | ret = -EIO; | |
213 | goto end; | |
214 | } | |
215 | ||
216 | if (args->section) { | |
217 | if (strcmp(args->section, section)) { | |
218 | goto end; | |
219 | } | |
220 | } | |
221 | ||
222 | ret = args->handler(&entry, args->user_data); | |
223 | end: | |
224 | return ret; | |
225 | } | |
226 | ||
227 | LTTNG_HIDDEN | |
228 | int config_get_section_entries(const char *override_path, const char *section, | |
229 | config_entry_handler_cb handler, void *user_data) | |
230 | { | |
231 | int ret = 0; | |
7ab02a27 | 232 | char *path; |
1501a7f3 JG |
233 | FILE *config_file = NULL; |
234 | struct handler_filter_args filter = { section, handler, user_data }; | |
235 | ||
7ab02a27 DG |
236 | /* First, try system-wide conf. file. */ |
237 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
238 | ||
239 | config_file = fopen(path, "r"); | |
240 | if (config_file) { | |
241 | DBG("Loading daemon conf file at %s", path); | |
242 | /* | |
243 | * Return value is not very important here since error or not, we | |
244 | * continue and try the next possible conf. file. | |
245 | */ | |
246 | (void) ini_parse_file(config_file, | |
247 | (ini_entry_handler) config_entry_handler_filter, | |
248 | (void *) &filter); | |
249 | fclose(config_file); | |
250 | } | |
251 | ||
252 | /* Second is the user local configuration. */ | |
253 | path = utils_get_home_dir(); | |
254 | if (path) { | |
255 | char fullpath[PATH_MAX]; | |
256 | ||
257 | ret = snprintf(fullpath, sizeof(fullpath), | |
258 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
259 | if (ret < 0) { | |
260 | PERROR("snprintf user conf. path"); | |
261 | goto error; | |
262 | } | |
263 | ||
264 | config_file = fopen(fullpath, "r"); | |
265 | if (config_file) { | |
266 | DBG("Loading daemon user conf file at %s", path); | |
267 | /* | |
268 | * Return value is not very important here since error or not, we | |
269 | * continue and try the next possible conf. file. | |
270 | */ | |
271 | (void) ini_parse_file(config_file, | |
272 | (ini_entry_handler) config_entry_handler_filter, | |
273 | (void *) &filter); | |
274 | fclose(config_file); | |
275 | } | |
276 | } | |
277 | ||
278 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
279 | if (override_path) { |
280 | config_file = fopen(override_path, "r"); | |
281 | if (config_file) { | |
7ab02a27 DG |
282 | DBG("Loading daemon command line conf file at %s", override_path); |
283 | (void) ini_parse_file(config_file, | |
284 | (ini_entry_handler) config_entry_handler_filter, | |
285 | (void *) &filter); | |
286 | fclose(config_file); | |
1501a7f3 JG |
287 | } else { |
288 | ERR("Failed to open daemon configuration file at %s", | |
289 | override_path); | |
290 | ret = -ENOENT; | |
7ab02a27 | 291 | goto error; |
1501a7f3 JG |
292 | } |
293 | } | |
294 | ||
7ab02a27 DG |
295 | /* Everything went well. */ |
296 | ret = 0; | |
1501a7f3 | 297 | |
7ab02a27 | 298 | error: |
1501a7f3 JG |
299 | return ret; |
300 | } | |
301 | ||
302 | LTTNG_HIDDEN | |
303 | int config_parse_value(const char *value) | |
304 | { | |
305 | int i, ret = 0; | |
306 | char *endptr, *lower_str; | |
307 | size_t len; | |
308 | unsigned long v; | |
309 | ||
310 | len = strlen(value); | |
311 | if (!len) { | |
312 | ret = -1; | |
313 | goto end; | |
314 | } | |
315 | ||
316 | v = strtoul(value, &endptr, 10); | |
317 | if (endptr != value) { | |
318 | ret = v; | |
319 | goto end; | |
320 | } | |
321 | ||
322 | lower_str = zmalloc(len + 1); | |
323 | if (!lower_str) { | |
324 | PERROR("zmalloc"); | |
325 | ret = -errno; | |
326 | goto end; | |
327 | } | |
328 | ||
329 | for (i = 0; i < len; i++) { | |
330 | lower_str[i] = tolower(value[i]); | |
331 | } | |
332 | ||
333 | if (!strcmp(lower_str, config_str_yes) || | |
334 | !strcmp(lower_str, config_str_true) || | |
335 | !strcmp(lower_str, config_str_on)) { | |
336 | ret = 1; | |
337 | } else if (!strcmp(lower_str, config_str_no) || | |
338 | !strcmp(lower_str, config_str_false) || | |
339 | !strcmp(lower_str, config_str_off)) { | |
340 | ret = 0; | |
341 | } else { | |
342 | ret = -1; | |
343 | } | |
344 | ||
345 | free(lower_str); | |
346 | end: | |
347 | return ret; | |
348 | } | |
36f2332b JG |
349 | |
350 | /* | |
351 | * Returns a xmlChar string which must be released using xmlFree(). | |
352 | */ | |
353 | static xmlChar *encode_string(const char *in_str) | |
354 | { | |
355 | xmlChar *out_str = NULL; | |
356 | xmlCharEncodingHandlerPtr handler; | |
357 | int out_len, ret, in_len; | |
358 | ||
359 | assert(in_str); | |
360 | ||
361 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
362 | if (!handler) { | |
363 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
364 | goto end; | |
365 | } | |
366 | ||
367 | in_len = strlen(in_str); | |
368 | /* | |
f76d886f JG |
369 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
370 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 371 | */ |
f76d886f | 372 | out_len = (in_len * 4) + 1; |
36f2332b JG |
373 | out_str = xmlMalloc(out_len); |
374 | if (!out_str) { | |
375 | goto end; | |
376 | } | |
377 | ||
378 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
379 | if (ret < 0) { | |
380 | xmlFree(out_str); | |
381 | out_str = NULL; | |
382 | goto end; | |
383 | } | |
384 | ||
385 | /* out_len is now the size of out_str */ | |
386 | out_str[out_len] = '\0'; | |
387 | end: | |
388 | return out_str; | |
389 | } | |
390 | ||
391 | LTTNG_HIDDEN | |
705bb62f | 392 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
393 | { |
394 | int ret; | |
395 | struct config_writer *writer; | |
396 | xmlOutputBufferPtr buffer; | |
397 | ||
398 | writer = zmalloc(sizeof(struct config_writer)); | |
399 | if (!writer) { | |
400 | PERROR("zmalloc config_writer_create"); | |
401 | goto end; | |
402 | } | |
403 | ||
404 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
405 | if (!buffer) { | |
406 | goto error_destroy; | |
407 | } | |
408 | ||
409 | writer->writer = xmlNewTextWriter(buffer); | |
410 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
411 | config_xml_encoding, NULL); | |
412 | if (ret < 0) { | |
413 | goto error_destroy; | |
414 | } | |
415 | ||
416 | ret = xmlTextWriterSetIndentString(writer->writer, | |
417 | BAD_CAST config_xml_indent_string); | |
705bb62f | 418 | if (ret) { |
36f2332b JG |
419 | goto error_destroy; |
420 | } | |
421 | ||
705bb62f JRJ |
422 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
423 | if (ret) { | |
36f2332b JG |
424 | goto error_destroy; |
425 | } | |
426 | ||
427 | end: | |
428 | return writer; | |
429 | error_destroy: | |
430 | config_writer_destroy(writer); | |
431 | return NULL; | |
432 | } | |
433 | ||
434 | LTTNG_HIDDEN | |
435 | int config_writer_destroy(struct config_writer *writer) | |
436 | { | |
437 | int ret = 0; | |
438 | ||
439 | if (!writer) { | |
440 | ret = -EINVAL; | |
441 | goto end; | |
442 | } | |
443 | ||
444 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
445 | WARN("Could not close XML document"); | |
446 | ret = -EIO; | |
447 | } | |
448 | ||
449 | if (writer->writer) { | |
450 | xmlFreeTextWriter(writer->writer); | |
451 | } | |
452 | ||
453 | free(writer); | |
454 | end: | |
455 | return ret; | |
456 | } | |
457 | ||
458 | LTTNG_HIDDEN | |
459 | int config_writer_open_element(struct config_writer *writer, | |
460 | const char *element_name) | |
461 | { | |
462 | int ret; | |
463 | xmlChar *encoded_element_name; | |
464 | ||
465 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
466 | ret = -1; | |
467 | goto end; | |
468 | } | |
469 | ||
470 | encoded_element_name = encode_string(element_name); | |
471 | if (!encoded_element_name) { | |
472 | ret = -1; | |
473 | goto end; | |
474 | } | |
475 | ||
476 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
477 | xmlFree(encoded_element_name); | |
478 | end: | |
28676a1d | 479 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
480 | } |
481 | ||
e10b6a1c JG |
482 | LTTNG_HIDDEN |
483 | int config_writer_write_attribute(struct config_writer *writer, | |
484 | const char *name, const char *value) | |
485 | { | |
486 | int ret; | |
487 | xmlChar *encoded_name = NULL; | |
488 | xmlChar *encoded_value = NULL; | |
489 | ||
490 | if (!writer || !writer->writer || !name || !name[0]) { | |
491 | ret = -1; | |
492 | goto end; | |
493 | } | |
494 | ||
495 | encoded_name = encode_string(name); | |
496 | if (!encoded_name) { | |
497 | ret = -1; | |
498 | goto end; | |
499 | } | |
500 | ||
501 | encoded_value = encode_string(value); | |
502 | if (!encoded_value) { | |
503 | ret = -1; | |
504 | goto end; | |
505 | } | |
506 | ||
507 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
508 | encoded_value); | |
509 | end: | |
510 | xmlFree(encoded_name); | |
511 | xmlFree(encoded_value); | |
512 | return ret >= 0 ? 0 : ret; | |
513 | } | |
514 | ||
36f2332b JG |
515 | LTTNG_HIDDEN |
516 | int config_writer_close_element(struct config_writer *writer) | |
517 | { | |
518 | int ret; | |
519 | ||
520 | if (!writer || !writer->writer) { | |
521 | ret = -1; | |
522 | goto end; | |
523 | } | |
524 | ||
525 | ret = xmlTextWriterEndElement(writer->writer); | |
526 | end: | |
28676a1d | 527 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
528 | } |
529 | ||
530 | LTTNG_HIDDEN | |
531 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
532 | const char *element_name, uint64_t value) | |
533 | { | |
534 | int ret; | |
535 | xmlChar *encoded_element_name; | |
536 | ||
537 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
538 | ret = -1; | |
539 | goto end; | |
540 | } | |
541 | ||
542 | encoded_element_name = encode_string(element_name); | |
543 | if (!encoded_element_name) { | |
544 | ret = -1; | |
545 | goto end; | |
546 | } | |
547 | ||
548 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
549 | encoded_element_name, "%" PRIu64, value); | |
550 | xmlFree(encoded_element_name); | |
551 | end: | |
28676a1d | 552 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
553 | } |
554 | ||
555 | LTTNG_HIDDEN | |
556 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
557 | const char *element_name, int64_t value) | |
558 | { | |
559 | int ret; | |
560 | xmlChar *encoded_element_name; | |
561 | ||
562 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
563 | ret = -1; | |
564 | goto end; | |
565 | } | |
566 | ||
567 | encoded_element_name = encode_string(element_name); | |
568 | if (!encoded_element_name) { | |
569 | ret = -1; | |
570 | goto end; | |
571 | } | |
572 | ||
573 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
574 | encoded_element_name, "%" PRIi64, value); | |
575 | xmlFree(encoded_element_name); | |
576 | end: | |
28676a1d | 577 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
578 | } |
579 | ||
580 | LTTNG_HIDDEN | |
581 | int config_writer_write_element_bool(struct config_writer *writer, | |
582 | const char *element_name, int value) | |
583 | { | |
584 | return config_writer_write_element_string(writer, element_name, | |
585 | value ? config_xml_true : config_xml_false); | |
586 | } | |
587 | ||
588 | LTTNG_HIDDEN | |
589 | int config_writer_write_element_string(struct config_writer *writer, | |
590 | const char *element_name, const char *value) | |
591 | { | |
592 | int ret; | |
593 | xmlChar *encoded_element_name = NULL; | |
594 | xmlChar *encoded_value = NULL; | |
595 | ||
596 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
597 | !value) { | |
598 | ret = -1; | |
599 | goto end; | |
600 | } | |
601 | ||
602 | encoded_element_name = encode_string(element_name); | |
603 | if (!encoded_element_name) { | |
604 | ret = -1; | |
605 | goto end; | |
606 | } | |
607 | ||
608 | encoded_value = encode_string(value); | |
609 | if (!encoded_value) { | |
610 | ret = -1; | |
611 | goto end; | |
612 | } | |
613 | ||
614 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 615 | encoded_value); |
36f2332b JG |
616 | end: |
617 | xmlFree(encoded_element_name); | |
618 | xmlFree(encoded_value); | |
28676a1d | 619 | return ret >= 0 ? 0 : ret; |
36f2332b | 620 | } |
dcf266c0 JG |
621 | |
622 | static | |
623 | void xml_error_handler(void *ctx, const char *format, ...) | |
624 | { | |
625 | char *errMsg; | |
626 | va_list args; | |
627 | int ret; | |
628 | ||
629 | va_start(args, format); | |
630 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 631 | va_end(args); |
dcf266c0 JG |
632 | if (ret == -1) { |
633 | ERR("String allocation failed in xml error handler"); | |
634 | return; | |
635 | } | |
dcf266c0 JG |
636 | |
637 | fprintf(stderr, "XML Error: %s", errMsg); | |
638 | free(errMsg); | |
639 | } | |
640 | ||
641 | static | |
642 | void fini_session_config_validation_ctx( | |
643 | struct session_config_validation_ctx *ctx) | |
644 | { | |
645 | if (ctx->parser_ctx) { | |
646 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
647 | } | |
648 | ||
649 | if (ctx->schema) { | |
650 | xmlSchemaFree(ctx->schema); | |
651 | } | |
652 | ||
653 | if (ctx->schema_validation_ctx) { | |
654 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
655 | } | |
656 | ||
657 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
658 | } | |
659 | ||
54e399cb JG |
660 | static |
661 | char *get_session_config_xsd_path() | |
662 | { | |
663 | char *xsd_path; | |
e8fa9fb0 | 664 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
665 | size_t base_path_len; |
666 | size_t max_path_len; | |
667 | ||
668 | if (!base_path) { | |
669 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
670 | } | |
671 | ||
672 | base_path_len = strlen(base_path); | |
673 | max_path_len = base_path_len + | |
674 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
675 | xsd_path = zmalloc(max_path_len); | |
676 | if (!xsd_path) { | |
677 | goto end; | |
678 | } | |
679 | ||
680 | strncpy(xsd_path, base_path, max_path_len); | |
681 | if (xsd_path[base_path_len - 1] != '/') { | |
682 | xsd_path[base_path_len++] = '/'; | |
683 | } | |
684 | ||
685 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
686 | max_path_len - base_path_len); | |
687 | end: | |
688 | return xsd_path; | |
689 | } | |
690 | ||
dcf266c0 JG |
691 | static |
692 | int init_session_config_validation_ctx( | |
693 | struct session_config_validation_ctx *ctx) | |
694 | { | |
695 | int ret; | |
54e399cb JG |
696 | char *xsd_path = get_session_config_xsd_path(); |
697 | ||
698 | if (!xsd_path) { | |
699 | ret = -LTTNG_ERR_NOMEM; | |
700 | goto end; | |
701 | } | |
dcf266c0 | 702 | |
54e399cb | 703 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
704 | if (!ctx->parser_ctx) { |
705 | ERR("XSD parser context creation failed"); | |
706 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
707 | goto end; | |
708 | } | |
709 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
710 | xml_error_handler, NULL); | |
711 | ||
712 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
713 | if (!ctx->schema) { | |
714 | ERR("XSD parsing failed"); | |
715 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
716 | goto end; | |
717 | } | |
718 | ||
719 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
720 | if (!ctx->schema_validation_ctx) { | |
721 | ERR("XSD validation context creation failed"); | |
722 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
723 | goto end; | |
724 | } | |
725 | ||
726 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
727 | xml_error_handler, NULL); | |
728 | ret = 0; | |
729 | ||
730 | end: | |
731 | if (ret) { | |
732 | fini_session_config_validation_ctx(ctx); | |
733 | } | |
734 | ||
54e399cb | 735 | free(xsd_path); |
dcf266c0 JG |
736 | return ret; |
737 | } | |
738 | ||
739 | static | |
740 | int parse_uint(xmlChar *str, uint64_t *val) | |
741 | { | |
742 | int ret; | |
743 | char *endptr; | |
744 | ||
745 | if (!str || !val) { | |
746 | ret = -1; | |
747 | goto end; | |
748 | } | |
749 | ||
750 | *val = strtoull((const char *) str, &endptr, 10); | |
751 | if (!endptr || *endptr) { | |
752 | ret = -1; | |
753 | } else { | |
754 | ret = 0; | |
755 | } | |
756 | ||
757 | end: | |
758 | return ret; | |
759 | } | |
760 | ||
761 | static | |
762 | int parse_int(xmlChar *str, int64_t *val) | |
763 | { | |
764 | int ret; | |
765 | char *endptr; | |
766 | ||
767 | if (!str || !val) { | |
768 | ret = -1; | |
769 | goto end; | |
770 | } | |
771 | ||
772 | *val = strtoll((const char *) str, &endptr, 10); | |
773 | if (!endptr || *endptr) { | |
774 | ret = -1; | |
775 | } else { | |
776 | ret = 0; | |
777 | } | |
778 | ||
779 | end: | |
780 | return ret; | |
781 | } | |
782 | ||
783 | static | |
784 | int parse_bool(xmlChar *str, int *val) | |
785 | { | |
786 | int ret = 0; | |
787 | ||
788 | if (!str || !val) { | |
789 | ret = -1; | |
790 | goto end; | |
791 | } | |
792 | ||
793 | if (!strcmp((const char *) str, config_xml_true)) { | |
794 | *val = 1; | |
795 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
796 | *val = 0; | |
797 | } else { | |
798 | WARN("Invalid boolean value encoutered (%s).", | |
799 | (const char *) str); | |
800 | ret = -1; | |
801 | } | |
802 | end: | |
803 | return ret; | |
804 | } | |
805 | ||
806 | static | |
807 | int get_domain_type(xmlChar *domain) | |
808 | { | |
809 | int ret; | |
810 | ||
811 | if (!domain) { | |
812 | goto error; | |
813 | } | |
814 | ||
815 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
816 | ret = LTTNG_DOMAIN_KERNEL; | |
817 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
818 | ret = LTTNG_DOMAIN_UST; | |
819 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
820 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
821 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
822 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
823 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
824 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
825 | } else { |
826 | goto error; | |
827 | } | |
828 | ||
829 | return ret; | |
830 | error: | |
831 | return -1; | |
832 | } | |
833 | ||
834 | static | |
835 | int get_buffer_type(xmlChar *buffer_type) | |
836 | { | |
837 | int ret; | |
838 | ||
839 | if (!buffer_type) { | |
840 | goto error; | |
841 | } | |
842 | ||
843 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
844 | ret = LTTNG_BUFFER_GLOBAL; | |
845 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
846 | ret = LTTNG_BUFFER_PER_UID; | |
847 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
848 | ret = LTTNG_BUFFER_PER_PID; | |
849 | } else { | |
850 | goto error; | |
851 | } | |
852 | ||
853 | return ret; | |
854 | error: | |
855 | return -1; | |
856 | } | |
857 | ||
858 | static | |
859 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
860 | { | |
861 | int ret; | |
862 | ||
863 | if (!overwrite_mode) { | |
864 | goto error; | |
865 | } | |
866 | ||
867 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
868 | ret = 1; | |
869 | } else if (!strcmp((char *) overwrite_mode, | |
870 | config_overwrite_mode_discard)) { | |
871 | ret = 0; | |
872 | } else { | |
873 | goto error; | |
874 | } | |
875 | ||
876 | return ret; | |
877 | error: | |
878 | return -1; | |
879 | } | |
880 | ||
881 | static | |
882 | int get_output_type(xmlChar *output_type) | |
883 | { | |
884 | int ret; | |
885 | ||
886 | if (!output_type) { | |
887 | goto error; | |
888 | } | |
889 | ||
890 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
891 | ret = LTTNG_EVENT_MMAP; | |
892 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
893 | ret = LTTNG_EVENT_SPLICE; | |
894 | } else { | |
895 | goto error; | |
896 | } | |
897 | ||
898 | return ret; | |
899 | error: | |
900 | return -1; | |
901 | } | |
902 | ||
903 | static | |
904 | int get_event_type(xmlChar *event_type) | |
905 | { | |
906 | int ret; | |
907 | ||
908 | if (!event_type) { | |
909 | goto error; | |
910 | } | |
911 | ||
912 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
913 | ret = LTTNG_EVENT_ALL; | |
914 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
915 | ret = LTTNG_EVENT_TRACEPOINT; | |
916 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
917 | ret = LTTNG_EVENT_PROBE; | |
918 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
919 | ret = LTTNG_EVENT_FUNCTION; | |
920 | } else if (!strcmp((char *) event_type, | |
921 | config_event_type_function_entry)) { | |
922 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
923 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
924 | ret = LTTNG_EVENT_NOOP; | |
925 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
926 | ret = LTTNG_EVENT_SYSCALL; | |
927 | } else { | |
928 | goto error; | |
929 | } | |
930 | ||
931 | return ret; | |
932 | error: | |
933 | return -1; | |
934 | } | |
935 | ||
936 | static | |
937 | int get_loglevel_type(xmlChar *loglevel_type) | |
938 | { | |
939 | int ret; | |
940 | ||
941 | if (!loglevel_type) { | |
942 | goto error; | |
943 | } | |
944 | ||
945 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
946 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
947 | } else if (!strcmp((char *) loglevel_type, | |
948 | config_loglevel_type_range)) { | |
949 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
950 | } else if (!strcmp((char *) loglevel_type, | |
951 | config_loglevel_type_single)) { | |
952 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
953 | } else { | |
954 | goto error; | |
955 | } | |
956 | ||
957 | return ret; | |
958 | error: | |
959 | return -1; | |
960 | } | |
961 | ||
962 | /* | |
963 | * Return the context type or -1 on error. | |
964 | */ | |
965 | static | |
966 | int get_context_type(xmlChar *context_type) | |
967 | { | |
968 | int ret; | |
969 | ||
970 | if (!context_type) { | |
971 | goto error; | |
972 | } | |
973 | ||
974 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
975 | ret = LTTNG_EVENT_CONTEXT_PID; | |
976 | } else if (!strcmp((char *) context_type, | |
977 | config_event_context_procname)) { | |
978 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
979 | } else if (!strcmp((char *) context_type, | |
980 | config_event_context_prio)) { | |
981 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
982 | } else if (!strcmp((char *) context_type, | |
983 | config_event_context_nice)) { | |
984 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
985 | } else if (!strcmp((char *) context_type, | |
986 | config_event_context_vpid)) { | |
987 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
988 | } else if (!strcmp((char *) context_type, | |
989 | config_event_context_tid)) { | |
990 | ret = LTTNG_EVENT_CONTEXT_TID; | |
991 | } else if (!strcmp((char *) context_type, | |
992 | config_event_context_vtid)) { | |
993 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
994 | } else if (!strcmp((char *) context_type, | |
995 | config_event_context_ppid)) { | |
996 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
997 | } else if (!strcmp((char *) context_type, | |
998 | config_event_context_vppid)) { | |
999 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1000 | } else if (!strcmp((char *) context_type, | |
1001 | config_event_context_pthread_id)) { | |
1002 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1003 | } else if (!strcmp((char *) context_type, | |
1004 | config_event_context_hostname)) { | |
1005 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1006 | } else if (!strcmp((char *) context_type, | |
1007 | config_event_context_ip)) { | |
1008 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1009 | } else if (!strcmp((char *) context_type, |
1010 | config_event_context_interruptible)) { | |
1011 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1012 | } else if (!strcmp((char *) context_type, | |
1013 | config_event_context_preemptible)) { | |
1014 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1015 | } else if (!strcmp((char *) context_type, | |
1016 | config_event_context_need_reschedule)) { | |
1017 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1018 | } else if (!strcmp((char *) context_type, | |
1019 | config_event_context_migratable)) { | |
1020 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
dcf266c0 JG |
1021 | } else { |
1022 | goto error; | |
1023 | } | |
1024 | ||
1025 | return ret; | |
1026 | error: | |
1027 | return -1; | |
1028 | } | |
1029 | ||
1030 | static | |
1031 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1032 | { | |
1033 | int ret; | |
1034 | xmlNodePtr node; | |
1035 | ||
1036 | for (node = xmlFirstElementChild(domain_node); node; | |
1037 | node = xmlNextElementSibling(node)) { | |
1038 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1039 | /* domain type */ | |
1040 | xmlChar *node_content = xmlNodeGetContent(node); | |
1041 | if (!node_content) { | |
1042 | ret = -LTTNG_ERR_NOMEM; | |
1043 | goto end; | |
1044 | } | |
1045 | ||
1046 | ret = get_domain_type(node_content); | |
1047 | free(node_content); | |
1048 | if (ret < 0) { | |
1049 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1050 | goto end; | |
1051 | } | |
1052 | ||
1053 | domain->type = ret; | |
1054 | } else if (!strcmp((const char *) node->name, | |
1055 | config_element_buffer_type)) { | |
1056 | /* buffer type */ | |
1057 | xmlChar *node_content = xmlNodeGetContent(node); | |
1058 | if (!node_content) { | |
1059 | ret = -LTTNG_ERR_NOMEM; | |
1060 | goto end; | |
1061 | } | |
1062 | ||
1063 | ret = get_buffer_type(node_content); | |
1064 | free(node_content); | |
1065 | if (ret < 0) { | |
1066 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1067 | goto end; | |
1068 | } | |
1069 | ||
1070 | domain->buf_type = ret; | |
1071 | } | |
1072 | } | |
1073 | ret = 0; | |
1074 | end: | |
1075 | return ret; | |
1076 | } | |
1077 | ||
1078 | static | |
1079 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1080 | char **data_uri) | |
1081 | { | |
1082 | xmlNodePtr node; | |
1083 | ||
1084 | for (node = xmlFirstElementChild(net_output_node); node; | |
1085 | node = xmlNextElementSibling(node)) { | |
1086 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1087 | /* control_uri */ | |
1088 | *control_uri = (char *) xmlNodeGetContent(node); | |
1089 | if (!*control_uri) { | |
1090 | break; | |
1091 | } | |
1092 | } else { | |
1093 | /* data_uri */ | |
1094 | *data_uri = (char *) xmlNodeGetContent(node); | |
1095 | if (!*data_uri) { | |
1096 | break; | |
1097 | } | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1102 | } | |
1103 | ||
1104 | static | |
1105 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1106 | struct consumer_output *output) | |
1107 | { | |
1108 | int ret; | |
1109 | xmlNodePtr node; | |
1110 | ||
1111 | assert(output); | |
1112 | ||
1113 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1114 | node = xmlNextElementSibling(node)) { | |
1115 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1116 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1117 | ||
1118 | /* enabled */ | |
1119 | if (!enabled_str) { | |
1120 | ret = -LTTNG_ERR_NOMEM; | |
1121 | goto end; | |
1122 | } | |
1123 | ||
1124 | ret = parse_bool(enabled_str, &output->enabled); | |
1125 | free(enabled_str); | |
1126 | if (ret) { | |
1127 | goto end; | |
1128 | } | |
1129 | } else { | |
1130 | xmlNodePtr output_type_node; | |
1131 | ||
1132 | /* destination */ | |
1133 | output_type_node = xmlFirstElementChild(node); | |
1134 | if (!output_type_node) { | |
1135 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1136 | goto end; | |
1137 | } | |
1138 | ||
1139 | if (!strcmp((const char *) output_type_node->name, | |
1140 | config_element_path)) { | |
1141 | /* path */ | |
1142 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1143 | if (!output->path) { | |
1144 | ret = -LTTNG_ERR_NOMEM; | |
1145 | goto end; | |
1146 | } | |
1147 | } else { | |
1148 | /* net_output */ | |
1149 | ret = get_net_output_uris(output_type_node, | |
1150 | &output->control_uri, &output->data_uri); | |
1151 | if (ret) { | |
1152 | goto end; | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ret = 0; | |
1158 | ||
1159 | end: | |
1160 | if (ret) { | |
1161 | free(output->path); | |
1162 | free(output->control_uri); | |
1163 | free(output->data_uri); | |
1164 | memset(output, 0, sizeof(struct consumer_output)); | |
1165 | } | |
1166 | return ret; | |
1167 | } | |
1168 | ||
1169 | static | |
95681498 JG |
1170 | int create_session_net_output(const char *name, const char *control_uri, |
1171 | const char *data_uri) | |
dcf266c0 JG |
1172 | { |
1173 | int ret; | |
1174 | struct lttng_handle *handle; | |
1175 | const char *uri = NULL; | |
1176 | ||
1177 | assert(name); | |
dcf266c0 | 1178 | |
95681498 | 1179 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1180 | if (!handle) { |
1181 | ret = -LTTNG_ERR_NOMEM; | |
1182 | goto end; | |
1183 | } | |
1184 | ||
1185 | if (!control_uri || !data_uri) { | |
1186 | uri = control_uri ? control_uri : data_uri; | |
1187 | control_uri = uri; | |
1188 | data_uri = uri; | |
1189 | } | |
1190 | ||
1191 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1192 | lttng_destroy_handle(handle); | |
1193 | end: | |
1194 | return ret; | |
1195 | } | |
1196 | ||
1197 | static | |
1b08cbce JR |
1198 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1199 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1200 | { |
1201 | int ret; | |
1202 | xmlNodePtr node = NULL; | |
1203 | xmlNodePtr snapshot_output_list_node; | |
1204 | xmlNodePtr snapshot_output_node; | |
1205 | ||
1206 | assert(session_name); | |
1207 | ||
1208 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1209 | if (ret) { | |
1210 | goto end; | |
1211 | } | |
1212 | ||
1213 | if (!output_node) { | |
1214 | goto end; | |
1215 | } | |
1216 | ||
1217 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1218 | ||
1219 | /* Parse and create snapshot outputs */ | |
1220 | ||
1221 | for (snapshot_output_node = | |
1222 | xmlFirstElementChild(snapshot_output_list_node); | |
1223 | snapshot_output_node; snapshot_output_node = | |
1224 | xmlNextElementSibling(snapshot_output_node)) { | |
1225 | char *name = NULL; | |
1226 | uint64_t max_size = UINT64_MAX; | |
1227 | struct consumer_output output = { 0 }; | |
1228 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1229 | const char *control_uri = NULL; |
1230 | const char *data_uri = NULL; | |
1231 | const char *path = NULL; | |
dcf266c0 JG |
1232 | |
1233 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1234 | node = xmlNextElementSibling(node)) { | |
1235 | if (!strcmp((const char *) node->name, | |
1236 | config_element_name)) { | |
1237 | /* name */ | |
1238 | name = (char *) xmlNodeGetContent(node); | |
1239 | if (!name) { | |
1240 | ret = -LTTNG_ERR_NOMEM; | |
1241 | goto error_snapshot_output; | |
1242 | } | |
1243 | } else if (!strcmp((const char *) node->name, | |
1244 | config_element_max_size)) { | |
1245 | xmlChar *content = xmlNodeGetContent(node); | |
1246 | ||
1247 | /* max_size */ | |
1248 | if (!content) { | |
1249 | ret = -LTTNG_ERR_NOMEM; | |
1250 | goto error_snapshot_output; | |
1251 | } | |
1252 | ret = parse_uint(content, &max_size); | |
1253 | free(content); | |
1254 | if (ret) { | |
1255 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1256 | goto error_snapshot_output; | |
1257 | } | |
1258 | } else { | |
1259 | /* consumer_output */ | |
1260 | ret = process_consumer_output(node, &output); | |
1261 | if (ret) { | |
1262 | goto error_snapshot_output; | |
1263 | } | |
1264 | } | |
1265 | } | |
1266 | ||
21a3f144 JR |
1267 | control_uri = output.control_uri; |
1268 | data_uri = output.data_uri; | |
1269 | path = output.path; | |
1270 | ||
1b08cbce JR |
1271 | if (overrides) { |
1272 | if (overrides->path_url) { | |
1b08cbce | 1273 | path = overrides->path_url; |
21a3f144 JR |
1274 | /* Control/data_uri are null */ |
1275 | control_uri = NULL; | |
1276 | data_uri = NULL; | |
1b08cbce JR |
1277 | } else { |
1278 | if (overrides->ctrl_url) { | |
1b08cbce | 1279 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1280 | /* path is null */ |
1281 | path = NULL; | |
1b08cbce JR |
1282 | } |
1283 | if (overrides->data_url) { | |
1b08cbce | 1284 | data_uri = overrides->data_url; |
21a3f144 JR |
1285 | /* path is null */ |
1286 | path = NULL; | |
1b08cbce JR |
1287 | } |
1288 | } | |
1b08cbce JR |
1289 | } |
1290 | ||
dcf266c0 JG |
1291 | snapshot_output = lttng_snapshot_output_create(); |
1292 | if (!snapshot_output) { | |
1293 | ret = -LTTNG_ERR_NOMEM; | |
1294 | goto error_snapshot_output; | |
1295 | } | |
1296 | ||
1297 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1298 | if (ret) { | |
1299 | goto error_snapshot_output; | |
1300 | } | |
1301 | ||
1302 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1303 | if (ret) { | |
1304 | goto error_snapshot_output; | |
1305 | } | |
1306 | ||
1b08cbce JR |
1307 | if (path) { |
1308 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1309 | snapshot_output); |
1310 | if (ret) { | |
1311 | goto error_snapshot_output; | |
1312 | } | |
1313 | } else { | |
1b08cbce JR |
1314 | if (control_uri) { |
1315 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1316 | snapshot_output); |
1317 | if (ret) { | |
1318 | goto error_snapshot_output; | |
1319 | } | |
1320 | } | |
1321 | ||
1b08cbce JR |
1322 | if (data_uri) { |
1323 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1324 | snapshot_output); |
1325 | if (ret) { | |
1326 | goto error_snapshot_output; | |
1327 | } | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1332 | error_snapshot_output: | |
1333 | free(name); | |
1334 | free(output.path); | |
1335 | free(output.control_uri); | |
1336 | free(output.data_uri); | |
1337 | lttng_snapshot_output_destroy(snapshot_output); | |
1338 | if (ret) { | |
1339 | goto end; | |
1340 | } | |
1341 | } | |
1342 | end: | |
1343 | return ret; | |
1344 | } | |
1345 | ||
1346 | static | |
1347 | int create_session(const char *name, | |
1348 | struct lttng_domain *kernel_domain, | |
1349 | struct lttng_domain *ust_domain, | |
1350 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1351 | struct lttng_domain *log4j_domain, |
dcf266c0 | 1352 | xmlNodePtr output_node, |
1b08cbce JR |
1353 | uint64_t live_timer_interval, |
1354 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1355 | { |
1356 | int ret; | |
1357 | struct consumer_output output = { 0 }; | |
1358 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1359 | const char *control_uri = NULL; |
1360 | const char *data_uri = NULL; | |
1361 | const char *path = NULL; | |
dcf266c0 JG |
1362 | |
1363 | assert(name); | |
dcf266c0 JG |
1364 | |
1365 | if (output_node) { | |
1366 | consumer_output_node = xmlFirstElementChild(output_node); | |
1367 | if (!consumer_output_node) { | |
1368 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1369 | goto end; | |
1370 | } | |
1371 | ||
1372 | if (strcmp((const char *) consumer_output_node->name, | |
1373 | config_element_consumer_output)) { | |
1374 | WARN("Invalid output type, expected %s node", | |
1375 | config_element_consumer_output); | |
1376 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1377 | goto end; | |
1378 | } | |
1379 | ||
1380 | ret = process_consumer_output(consumer_output_node, &output); | |
1381 | if (ret) { | |
1382 | goto end; | |
1383 | } | |
1384 | } | |
1385 | ||
21a3f144 JR |
1386 | control_uri = output.control_uri; |
1387 | data_uri = output.data_uri; | |
1388 | path = output.path; | |
1389 | ||
1b08cbce JR |
1390 | /* Check for override and apply them */ |
1391 | if (overrides) { | |
1392 | if (overrides->path_url) { | |
1b08cbce | 1393 | path = overrides->path_url; |
21a3f144 JR |
1394 | /* control/data_uri are null */; |
1395 | control_uri = NULL; | |
1396 | data_uri = NULL; | |
1b08cbce JR |
1397 | } else { |
1398 | if (overrides->ctrl_url) { | |
1b08cbce | 1399 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1400 | /* path is null */ |
1401 | path = NULL; | |
1b08cbce JR |
1402 | } |
1403 | if (overrides->data_url) { | |
1b08cbce | 1404 | data_uri = overrides->data_url; |
21a3f144 JR |
1405 | /* path is null */ |
1406 | path = NULL; | |
1b08cbce JR |
1407 | } |
1408 | } | |
1b08cbce JR |
1409 | } |
1410 | ||
21a3f144 | 1411 | |
1b08cbce | 1412 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1413 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1414 | goto end; | |
1415 | } | |
1416 | ||
1b08cbce | 1417 | if (control_uri || data_uri) { |
dcf266c0 JG |
1418 | /* network destination */ |
1419 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1420 | /* |
1421 | * URLs are provided for sure since the test above make sure that | |
1422 | * with a live timer the data and control URIs are provided. So, | |
1423 | * NULL is passed here and will be set right after. | |
1424 | */ | |
1425 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1426 | } else { |
1427 | ret = lttng_create_session(name, NULL); | |
1428 | } | |
1429 | if (ret) { | |
1430 | goto end; | |
1431 | } | |
1432 | ||
1b08cbce | 1433 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1434 | if (ret) { |
1435 | goto end; | |
dcf266c0 | 1436 | } |
95681498 | 1437 | |
dcf266c0 JG |
1438 | } else { |
1439 | /* either local output or no output */ | |
1b08cbce | 1440 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1441 | if (ret) { |
1442 | goto end; | |
1443 | } | |
1444 | } | |
1445 | end: | |
1446 | free(output.path); | |
1447 | free(output.control_uri); | |
1448 | free(output.data_uri); | |
1449 | return ret; | |
1450 | } | |
1451 | static | |
1452 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1453 | struct lttng_event_probe_attr *attr) | |
1454 | { | |
1455 | int ret; | |
1456 | ||
1457 | assert(probe_attribute_node); | |
1458 | assert(attr); | |
1459 | ||
1460 | if (!strcmp((const char *) probe_attribute_node->name, | |
1461 | config_element_address)) { | |
1462 | xmlChar *content; | |
1463 | uint64_t addr = 0; | |
1464 | ||
1465 | /* addr */ | |
1466 | content = xmlNodeGetContent(probe_attribute_node); | |
1467 | if (!content) { | |
1468 | ret = -LTTNG_ERR_NOMEM; | |
1469 | goto end; | |
1470 | } | |
1471 | ||
1472 | ret = parse_uint(content, &addr); | |
1473 | free(content); | |
1474 | if (ret) { | |
1475 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1476 | goto end; | |
1477 | } | |
1478 | ||
1479 | attr->addr = addr; | |
1480 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1481 | config_element_offset)) { | |
1482 | xmlChar *content; | |
1483 | uint64_t offset = 0; | |
1484 | ||
1485 | /* offset */ | |
1486 | content = xmlNodeGetContent(probe_attribute_node); | |
1487 | if (!content) { | |
1488 | ret = -LTTNG_ERR_NOMEM; | |
1489 | goto end; | |
1490 | } | |
1491 | ||
1492 | ret = parse_uint(content, &offset); | |
1493 | free(content); | |
1494 | if (ret) { | |
1495 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1496 | goto end; | |
1497 | } | |
1498 | ||
1499 | attr->offset = offset; | |
1500 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1501 | config_element_symbol_name)) { | |
1502 | xmlChar *content; | |
1503 | size_t name_len; | |
1504 | ||
1505 | /* symbol_name */ | |
1506 | content = xmlNodeGetContent(probe_attribute_node); | |
1507 | if (!content) { | |
1508 | ret = -LTTNG_ERR_NOMEM; | |
1509 | goto end; | |
1510 | } | |
1511 | ||
1512 | name_len = strlen((char *) content); | |
1513 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1514 | WARN("symbol_name too long."); | |
1515 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1516 | free(content); | |
1517 | goto end; | |
1518 | } | |
1519 | ||
1520 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1521 | free(content); | |
1522 | } | |
1523 | ret = 0; | |
1524 | end: | |
1525 | return ret; | |
1526 | } | |
1527 | ||
1528 | static | |
1529 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1530 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1531 | { |
d7b645e2 | 1532 | int ret = 0, i; |
dcf266c0 JG |
1533 | xmlNodePtr node; |
1534 | struct lttng_event event; | |
1535 | char **exclusions = NULL; | |
1536 | unsigned long exclusion_count = 0; | |
1537 | char *filter_expression = NULL; | |
1538 | ||
1539 | assert(event_node); | |
1540 | assert(handle); | |
1541 | assert(channel_name); | |
1542 | ||
1543 | memset(&event, 0, sizeof(event)); | |
1544 | ||
f40eba3d JG |
1545 | /* Initialize default log level which varies by domain */ |
1546 | switch (handle->domain.type) | |
1547 | { | |
1548 | case LTTNG_DOMAIN_JUL: | |
1549 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1550 | break; | |
1551 | case LTTNG_DOMAIN_LOG4J: | |
1552 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1553 | break; | |
1554 | case LTTNG_DOMAIN_PYTHON: | |
1555 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1556 | break; | |
1557 | case LTTNG_DOMAIN_UST: | |
1558 | case LTTNG_DOMAIN_KERNEL: | |
1559 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1560 | break; | |
1561 | default: | |
1562 | assert(0); | |
1563 | } | |
1564 | ||
dcf266c0 JG |
1565 | for (node = xmlFirstElementChild(event_node); node; |
1566 | node = xmlNextElementSibling(node)) { | |
1567 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1568 | xmlChar *content; | |
1569 | size_t name_len; | |
1570 | ||
1571 | /* name */ | |
1572 | content = xmlNodeGetContent(node); | |
1573 | if (!content) { | |
1574 | ret = -LTTNG_ERR_NOMEM; | |
1575 | goto end; | |
1576 | } | |
1577 | ||
1578 | name_len = strlen((char *) content); | |
1579 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1580 | WARN("Channel name too long."); | |
1581 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1582 | free(content); | |
1583 | goto end; | |
1584 | } | |
1585 | ||
1586 | strncpy(event.name, (const char *) content, name_len); | |
1587 | free(content); | |
1588 | } else if (!strcmp((const char *) node->name, | |
1589 | config_element_enabled)) { | |
1590 | xmlChar *content = xmlNodeGetContent(node); | |
1591 | ||
1592 | /* enabled */ | |
1593 | if (!content) { | |
1594 | ret = -LTTNG_ERR_NOMEM; | |
1595 | goto end; | |
1596 | } | |
1597 | ||
1598 | ret = parse_bool(content, &event.enabled); | |
1599 | free(content); | |
1600 | if (ret) { | |
1601 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1602 | goto end; | |
1603 | } | |
1604 | } else if (!strcmp((const char *) node->name, | |
1605 | config_element_type)) { | |
1606 | xmlChar *content = xmlNodeGetContent(node); | |
1607 | ||
1608 | /* type */ | |
1609 | if (!content) { | |
1610 | ret = -LTTNG_ERR_NOMEM; | |
1611 | goto end; | |
1612 | } | |
1613 | ||
1614 | ret = get_event_type(content); | |
1615 | free(content); | |
1616 | if (ret < 0) { | |
1617 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1618 | goto end; | |
1619 | } | |
1620 | ||
1621 | event.type = ret; | |
1622 | } else if (!strcmp((const char *) node->name, | |
1623 | config_element_loglevel_type)) { | |
1624 | xmlChar *content = xmlNodeGetContent(node); | |
1625 | ||
1626 | /* loglevel_type */ | |
1627 | if (!content) { | |
1628 | ret = -LTTNG_ERR_NOMEM; | |
1629 | goto end; | |
1630 | } | |
1631 | ||
1632 | ret = get_loglevel_type(content); | |
1633 | free(content); | |
1634 | if (ret < 0) { | |
1635 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1636 | goto end; | |
1637 | } | |
1638 | ||
1639 | event.loglevel_type = ret; | |
1640 | } else if (!strcmp((const char *) node->name, | |
1641 | config_element_loglevel)) { | |
1642 | xmlChar *content; | |
1643 | int64_t loglevel = 0; | |
1644 | ||
1645 | /* loglevel */ | |
1646 | content = xmlNodeGetContent(node); | |
1647 | if (!content) { | |
1648 | ret = -LTTNG_ERR_NOMEM; | |
1649 | goto end; | |
1650 | } | |
1651 | ||
1652 | ret = parse_int(content, &loglevel); | |
1653 | free(content); | |
1654 | if (ret) { | |
1655 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1656 | goto end; | |
1657 | } | |
1658 | ||
1659 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1660 | WARN("loglevel out of range."); | |
1661 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1662 | goto end; | |
1663 | } | |
1664 | ||
1665 | event.loglevel = loglevel; | |
1666 | } else if (!strcmp((const char *) node->name, | |
1667 | config_element_filter)) { | |
1668 | xmlChar *content = | |
1669 | xmlNodeGetContent(node); | |
1670 | ||
1671 | /* filter */ | |
1672 | if (!content) { | |
1673 | ret = -LTTNG_ERR_NOMEM; | |
1674 | goto end; | |
1675 | } | |
1676 | ||
02d8ac3d | 1677 | free(filter_expression); |
dcf266c0 JG |
1678 | filter_expression = strdup((char *) content); |
1679 | free(content); | |
1680 | if (!filter_expression) { | |
1681 | ret = -LTTNG_ERR_NOMEM; | |
1682 | goto end; | |
1683 | } | |
1684 | } else if (!strcmp((const char *) node->name, | |
1685 | config_element_exclusions)) { | |
1686 | xmlNodePtr exclusion_node; | |
1687 | int exclusion_index = 0; | |
1688 | ||
1689 | /* exclusions */ | |
1690 | if (exclusions) { | |
1691 | /* | |
1692 | * Exclusions has already been initialized, | |
1693 | * invalid file. | |
1694 | */ | |
1695 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1696 | goto end; | |
1697 | } | |
1698 | ||
1699 | exclusion_count = xmlChildElementCount(node); | |
1700 | if (!exclusion_count) { | |
1701 | continue; | |
1702 | } | |
1703 | ||
1704 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1705 | if (!exclusions) { | |
1706 | exclusion_count = 0; | |
1707 | ret = -LTTNG_ERR_NOMEM; | |
1708 | goto end; | |
1709 | } | |
1710 | ||
1711 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1712 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1713 | xmlChar *content = | |
1714 | xmlNodeGetContent(exclusion_node); | |
1715 | ||
1716 | if (!content) { | |
1717 | ret = -LTTNG_ERR_NOMEM; | |
1718 | goto end; | |
1719 | } | |
1720 | ||
1721 | exclusions[exclusion_index] = strdup((const char *) content); | |
1722 | free(content); | |
1723 | if (!exclusions[exclusion_index]) { | |
1724 | ret = -LTTNG_ERR_NOMEM; | |
1725 | goto end; | |
1726 | } | |
1727 | exclusion_index++; | |
1728 | } | |
1729 | ||
1730 | event.exclusion = 1; | |
1731 | } else if (!strcmp((const char *) node->name, | |
1732 | config_element_attributes)) { | |
1733 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1734 | ||
1735 | /* attributes */ | |
1736 | if (!attribute_node) { | |
1737 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1738 | goto end; | |
1739 | } | |
1740 | ||
1741 | if (!strcmp((const char *) node->name, | |
1742 | config_element_probe_attributes)) { | |
1743 | xmlNodePtr probe_attribute_node; | |
1744 | ||
1745 | /* probe_attributes */ | |
1746 | for (probe_attribute_node = | |
1747 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1748 | probe_attribute_node = xmlNextElementSibling( | |
1749 | probe_attribute_node)) { | |
1750 | ||
1751 | ret = process_probe_attribute_node(probe_attribute_node, | |
1752 | &event.attr.probe); | |
1753 | if (ret) { | |
1754 | goto end; | |
1755 | } | |
1756 | } | |
1757 | } else { | |
1758 | size_t sym_len; | |
1759 | xmlChar *content; | |
1760 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1761 | ||
1762 | /* function_attributes */ | |
1763 | content = xmlNodeGetContent(symbol_node); | |
1764 | if (!content) { | |
1765 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | sym_len = strlen((char *) content); | |
1770 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1771 | WARN("Function name too long."); | |
1772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1773 | free(content); | |
1774 | goto end; | |
1775 | } | |
1776 | ||
1777 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1778 | sym_len); | |
1779 | free(content); | |
1780 | } | |
1781 | } | |
1782 | } | |
1783 | ||
d7b645e2 JR |
1784 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1785 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1786 | filter_expression, exclusion_count, exclusions); | |
1787 | if (ret < 0) { | |
1788 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1789 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1790 | goto end; | |
1791 | } | |
065321e9 | 1792 | } |
dcf266c0 JG |
1793 | end: |
1794 | for (i = 0; i < exclusion_count; i++) { | |
1795 | free(exclusions[i]); | |
1796 | } | |
1797 | ||
1798 | free(exclusions); | |
1799 | free(filter_expression); | |
1800 | return ret; | |
1801 | } | |
1802 | ||
1803 | static | |
1804 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1805 | const char *channel_name) | |
1806 | { | |
1807 | int ret = 0; | |
d7b645e2 | 1808 | struct lttng_event event; |
dcf266c0 JG |
1809 | xmlNodePtr node; |
1810 | ||
1811 | assert(events_node); | |
1812 | assert(handle); | |
1813 | assert(channel_name); | |
1814 | ||
1815 | for (node = xmlFirstElementChild(events_node); node; | |
1816 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 1817 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1818 | if (ret) { |
1819 | goto end; | |
1820 | } | |
1821 | } | |
d7b645e2 JR |
1822 | |
1823 | /* | |
1824 | * Disable all events to enable only the necessary events. | |
1825 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1826 | * force this approach. | |
1827 | */ | |
1828 | memset(&event, 0, sizeof(event)); | |
1829 | event.loglevel = -1; | |
1830 | event.type = LTTNG_EVENT_ALL; | |
1831 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1832 | if (ret) { | |
1833 | goto end; | |
1834 | } | |
1835 | ||
1836 | for (node = xmlFirstElementChild(events_node); node; | |
1837 | node = xmlNextElementSibling(node)) { | |
1838 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1839 | if (ret) { | |
1840 | goto end; | |
1841 | } | |
1842 | } | |
1843 | ||
dcf266c0 JG |
1844 | end: |
1845 | return ret; | |
1846 | } | |
1847 | ||
1848 | static | |
1849 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1850 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1851 | xmlNodePtr *events_node) | |
1852 | { | |
1853 | int ret; | |
1854 | ||
1855 | assert(attr_node); | |
1856 | assert(channel); | |
1857 | assert(contexts_node); | |
1858 | assert(events_node); | |
1859 | ||
1860 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1861 | xmlChar *content; | |
1862 | size_t name_len; | |
1863 | ||
1864 | /* name */ | |
1865 | content = xmlNodeGetContent(attr_node); | |
1866 | if (!content) { | |
1867 | ret = -LTTNG_ERR_NOMEM; | |
1868 | goto end; | |
1869 | } | |
1870 | ||
1871 | name_len = strlen((char *) content); | |
1872 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1873 | WARN("Channel name too long."); | |
1874 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1875 | free(content); | |
1876 | goto end; | |
1877 | } | |
1878 | ||
1879 | strncpy(channel->name, (const char *) content, name_len); | |
1880 | free(content); | |
1881 | } else if (!strcmp((const char *) attr_node->name, | |
1882 | config_element_enabled)) { | |
1883 | xmlChar *content; | |
1884 | int enabled; | |
1885 | ||
1886 | /* enabled */ | |
1887 | content = xmlNodeGetContent(attr_node); | |
1888 | if (!content) { | |
1889 | ret = -LTTNG_ERR_NOMEM; | |
1890 | goto end; | |
1891 | } | |
1892 | ||
1893 | ret = parse_bool(content, &enabled); | |
1894 | free(content); | |
1895 | if (ret) { | |
1896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1897 | goto end; | |
1898 | } | |
1899 | ||
1900 | channel->enabled = enabled; | |
1901 | } else if (!strcmp((const char *) attr_node->name, | |
1902 | config_element_overwrite_mode)) { | |
1903 | xmlChar *content; | |
1904 | ||
1905 | /* overwrite_mode */ | |
1906 | content = xmlNodeGetContent(attr_node); | |
1907 | if (!content) { | |
1908 | ret = -LTTNG_ERR_NOMEM; | |
1909 | goto end; | |
1910 | } | |
1911 | ||
1912 | ret = get_overwrite_mode(content); | |
1913 | free(content); | |
1914 | if (ret < 0) { | |
1915 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1916 | goto end; | |
1917 | } | |
1918 | ||
1919 | channel->attr.overwrite = ret; | |
1920 | } else if (!strcmp((const char *) attr_node->name, | |
1921 | config_element_subbuf_size)) { | |
1922 | xmlChar *content; | |
1923 | ||
1924 | /* subbuffer_size */ | |
1925 | content = xmlNodeGetContent(attr_node); | |
1926 | if (!content) { | |
1927 | ret = -LTTNG_ERR_NOMEM; | |
1928 | goto end; | |
1929 | } | |
1930 | ||
1931 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1932 | free(content); | |
1933 | if (ret) { | |
1934 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1935 | goto end; | |
1936 | } | |
1937 | } else if (!strcmp((const char *) attr_node->name, | |
1938 | config_element_num_subbuf)) { | |
1939 | xmlChar *content; | |
1940 | ||
1941 | /* subbuffer_count */ | |
1942 | content = xmlNodeGetContent(attr_node); | |
1943 | if (!content) { | |
1944 | ret = -LTTNG_ERR_NOMEM; | |
1945 | goto end; | |
1946 | } | |
1947 | ||
1948 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1949 | free(content); | |
1950 | if (ret) { | |
1951 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1952 | goto end; | |
1953 | } | |
1954 | } else if (!strcmp((const char *) attr_node->name, | |
1955 | config_element_switch_timer_interval)) { | |
1956 | xmlChar *content; | |
1957 | uint64_t switch_timer_interval = 0; | |
1958 | ||
1959 | /* switch_timer_interval */ | |
1960 | content = xmlNodeGetContent(attr_node); | |
1961 | if (!content) { | |
1962 | ret = -LTTNG_ERR_NOMEM; | |
1963 | goto end; | |
1964 | } | |
1965 | ||
1966 | ret = parse_uint(content, &switch_timer_interval); | |
1967 | free(content); | |
1968 | if (ret) { | |
1969 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1970 | goto end; | |
1971 | } | |
1972 | ||
1973 | if (switch_timer_interval > UINT_MAX) { | |
1974 | WARN("switch_timer_interval out of range."); | |
1975 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1976 | goto end; | |
1977 | } | |
1978 | ||
1979 | channel->attr.switch_timer_interval = | |
1980 | switch_timer_interval; | |
1981 | } else if (!strcmp((const char *) attr_node->name, | |
1982 | config_element_read_timer_interval)) { | |
1983 | xmlChar *content; | |
1984 | uint64_t read_timer_interval = 0; | |
1985 | ||
1986 | /* read_timer_interval */ | |
1987 | content = xmlNodeGetContent(attr_node); | |
1988 | if (!content) { | |
1989 | ret = -LTTNG_ERR_NOMEM; | |
1990 | goto end; | |
1991 | } | |
1992 | ||
1993 | ret = parse_uint(content, &read_timer_interval); | |
1994 | free(content); | |
1995 | if (ret) { | |
1996 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1997 | goto end; | |
1998 | } | |
1999 | ||
2000 | if (read_timer_interval > UINT_MAX) { | |
2001 | WARN("read_timer_interval out of range."); | |
2002 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2003 | goto end; | |
2004 | } | |
2005 | ||
2006 | channel->attr.read_timer_interval = | |
2007 | read_timer_interval; | |
2008 | } else if (!strcmp((const char *) attr_node->name, | |
2009 | config_element_output_type)) { | |
2010 | xmlChar *content; | |
2011 | ||
2012 | /* output_type */ | |
2013 | content = xmlNodeGetContent(attr_node); | |
2014 | if (!content) { | |
2015 | ret = -LTTNG_ERR_NOMEM; | |
2016 | goto end; | |
2017 | } | |
2018 | ||
2019 | ret = get_output_type(content); | |
2020 | free(content); | |
2021 | if (ret < 0) { | |
2022 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2023 | goto end; | |
2024 | } | |
2025 | ||
2026 | channel->attr.output = ret; | |
2027 | } else if (!strcmp((const char *) attr_node->name, | |
2028 | config_element_tracefile_size)) { | |
2029 | xmlChar *content; | |
2030 | ||
2031 | /* tracefile_size */ | |
2032 | content = xmlNodeGetContent(attr_node); | |
2033 | if (!content) { | |
2034 | ret = -LTTNG_ERR_NOMEM; | |
2035 | goto end; | |
2036 | } | |
2037 | ||
2038 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2039 | free(content); | |
2040 | if (ret) { | |
2041 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2042 | goto end; | |
2043 | } | |
2044 | } else if (!strcmp((const char *) attr_node->name, | |
2045 | config_element_tracefile_count)) { | |
2046 | xmlChar *content; | |
2047 | ||
2048 | /* tracefile_count */ | |
2049 | content = xmlNodeGetContent(attr_node); | |
2050 | if (!content) { | |
2051 | ret = -LTTNG_ERR_NOMEM; | |
2052 | goto end; | |
2053 | } | |
2054 | ||
2055 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2056 | free(content); | |
2057 | if (ret) { | |
2058 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2059 | goto end; | |
2060 | } | |
2061 | } else if (!strcmp((const char *) attr_node->name, | |
2062 | config_element_live_timer_interval)) { | |
2063 | xmlChar *content; | |
2064 | uint64_t live_timer_interval = 0; | |
2065 | ||
2066 | /* live_timer_interval */ | |
2067 | content = xmlNodeGetContent(attr_node); | |
2068 | if (!content) { | |
2069 | ret = -LTTNG_ERR_NOMEM; | |
2070 | goto end; | |
2071 | } | |
2072 | ||
2073 | ret = parse_uint(content, &live_timer_interval); | |
2074 | free(content); | |
2075 | if (ret) { | |
2076 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2077 | goto end; | |
2078 | } | |
2079 | ||
2080 | if (live_timer_interval > UINT_MAX) { | |
2081 | WARN("live_timer_interval out of range."); | |
2082 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2083 | goto end; | |
2084 | } | |
2085 | ||
2086 | channel->attr.live_timer_interval = | |
2087 | live_timer_interval; | |
4fc2b126 JR |
2088 | } else if (!strcmp((const char *) attr_node->name, |
2089 | config_element_monitor_timer_interval)) { | |
2090 | xmlChar *content; | |
2091 | uint64_t monitor_timer_interval = 0; | |
2092 | ||
2093 | /* monitor_timer_interval */ | |
2094 | content = xmlNodeGetContent(attr_node); | |
2095 | if (!content) { | |
2096 | ret = -LTTNG_ERR_NOMEM; | |
2097 | goto end; | |
2098 | } | |
2099 | ||
2100 | ret = parse_uint(content, &monitor_timer_interval); | |
2101 | free(content); | |
2102 | if (ret) { | |
2103 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2104 | goto end; | |
2105 | } | |
2106 | ||
2107 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2108 | monitor_timer_interval); | |
2109 | if (ret) { | |
2110 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2111 | goto end; | |
2112 | } | |
275472aa JR |
2113 | } else if (!strcmp((const char *) attr_node->name, |
2114 | config_element_blocking_timeout)) { | |
2115 | xmlChar *content; | |
2116 | int64_t blocking_timeout = 0; | |
2117 | ||
2118 | /* blocking_timeout */ | |
2119 | content = xmlNodeGetContent(attr_node); | |
2120 | if (!content) { | |
2121 | ret = -LTTNG_ERR_NOMEM; | |
2122 | goto end; | |
2123 | } | |
2124 | ||
2125 | ret = parse_int(content, &blocking_timeout); | |
2126 | free(content); | |
2127 | if (ret) { | |
2128 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2129 | goto end; | |
2130 | } | |
2131 | ||
2132 | ret = lttng_channel_set_blocking_timeout(channel, | |
2133 | blocking_timeout); | |
2134 | if (ret) { | |
2135 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2136 | goto end; | |
2137 | } | |
dcf266c0 JG |
2138 | } else if (!strcmp((const char *) attr_node->name, |
2139 | config_element_events)) { | |
2140 | /* events */ | |
2141 | *events_node = attr_node; | |
2142 | } else { | |
2143 | /* contexts */ | |
2144 | *contexts_node = attr_node; | |
2145 | } | |
2146 | ret = 0; | |
2147 | end: | |
2148 | return ret; | |
2149 | } | |
2150 | ||
2151 | static | |
2152 | int process_context_node(xmlNodePtr context_node, | |
2153 | struct lttng_handle *handle, const char *channel_name) | |
2154 | { | |
2155 | int ret; | |
2156 | struct lttng_event_context context; | |
2157 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2158 | ||
2159 | assert(handle); | |
2160 | assert(channel_name); | |
2161 | ||
2162 | if (!context_child_node) { | |
2163 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2164 | goto end; | |
2165 | } | |
2166 | ||
2167 | memset(&context, 0, sizeof(context)); | |
2168 | ||
2169 | if (!strcmp((const char *) context_child_node->name, | |
2170 | config_element_type)) { | |
2171 | /* type */ | |
2172 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2173 | |
dcf266c0 JG |
2174 | if (!content) { |
2175 | ret = -LTTNG_ERR_NOMEM; | |
2176 | goto end; | |
2177 | } | |
2178 | ||
2179 | ret = get_context_type(content); | |
2180 | free(content); | |
2181 | if (ret < 0) { | |
2182 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2183 | goto end; | |
2184 | } | |
2185 | ||
2186 | context.ctx = ret; | |
045fc617 JG |
2187 | } else if (!strcmp((const char *) context_child_node->name, |
2188 | config_element_context_perf)) { | |
2189 | /* perf */ | |
dcf266c0 JG |
2190 | xmlNodePtr perf_attr_node; |
2191 | ||
14ce5bd8 JG |
2192 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2193 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2194 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2195 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2196 | perf_attr_node; perf_attr_node = | |
2197 | xmlNextElementSibling(perf_attr_node)) { | |
2198 | if (!strcmp((const char *) perf_attr_node->name, | |
2199 | config_element_type)) { | |
2200 | xmlChar *content; | |
2201 | uint64_t type = 0; | |
2202 | ||
2203 | /* type */ | |
2204 | content = xmlNodeGetContent(perf_attr_node); | |
2205 | if (!content) { | |
2206 | ret = -LTTNG_ERR_NOMEM; | |
2207 | goto end; | |
2208 | } | |
2209 | ||
2210 | ret = parse_uint(content, &type); | |
2211 | free(content); | |
2212 | if (ret) { | |
2213 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2214 | goto end; | |
2215 | } | |
2216 | ||
2217 | if (type > UINT32_MAX) { | |
2218 | WARN("perf context type out of range."); | |
2219 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2220 | goto end; | |
2221 | } | |
2222 | ||
2223 | context.u.perf_counter.type = type; | |
2224 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2225 | config_element_config)) { | |
2226 | xmlChar *content; | |
2227 | uint64_t config = 0; | |
2228 | ||
2229 | /* config */ | |
2230 | content = xmlNodeGetContent(perf_attr_node); | |
2231 | if (!content) { | |
2232 | ret = -LTTNG_ERR_NOMEM; | |
2233 | goto end; | |
2234 | } | |
2235 | ||
2236 | ret = parse_uint(content, &config); | |
2237 | free(content); | |
2238 | if (ret) { | |
2239 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2240 | goto end; | |
2241 | } | |
2242 | ||
2243 | context.u.perf_counter.config = config; | |
2244 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2245 | config_element_name)) { | |
2246 | xmlChar *content; | |
2247 | size_t name_len; | |
2248 | ||
2249 | /* name */ | |
2250 | content = xmlNodeGetContent(perf_attr_node); | |
2251 | if (!content) { | |
2252 | ret = -LTTNG_ERR_NOMEM; | |
2253 | goto end; | |
2254 | } | |
2255 | ||
2256 | name_len = strlen((char *) content); | |
2257 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2258 | WARN("perf context name too long."); | |
2259 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2260 | free(content); | |
2261 | goto end; | |
2262 | } | |
2263 | ||
2264 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2265 | name_len); | |
2266 | free(content); | |
2267 | } | |
2268 | } | |
045fc617 JG |
2269 | } else if (!strcmp((const char *) context_child_node->name, |
2270 | config_element_context_app)) { | |
2271 | /* application context */ | |
2272 | xmlNodePtr app_ctx_node; | |
2273 | ||
2274 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2275 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2276 | app_ctx_node; app_ctx_node = | |
2277 | xmlNextElementSibling(app_ctx_node)) { | |
2278 | xmlChar *content; | |
2279 | char **target = strcmp( | |
2280 | (const char *) app_ctx_node->name, | |
2281 | config_element_context_app_provider_name) == 0 ? | |
2282 | &context.u.app_ctx.provider_name : | |
2283 | &context.u.app_ctx.ctx_name; | |
2284 | ||
2285 | content = xmlNodeGetContent(app_ctx_node); | |
2286 | if (!content) { | |
2287 | ret = -LTTNG_ERR_NOMEM; | |
2288 | goto end; | |
2289 | } | |
2290 | ||
2291 | *target = (char *) content; | |
2292 | } | |
2293 | } else { | |
2294 | /* Unrecognized context type */ | |
2295 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2296 | goto end; | |
dcf266c0 JG |
2297 | } |
2298 | ||
2299 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2300 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2301 | free(context.u.app_ctx.provider_name); | |
2302 | free(context.u.app_ctx.ctx_name); | |
2303 | } | |
dcf266c0 JG |
2304 | end: |
2305 | return ret; | |
2306 | } | |
2307 | ||
2308 | static | |
2309 | int process_contexts_node(xmlNodePtr contexts_node, | |
2310 | struct lttng_handle *handle, const char *channel_name) | |
2311 | { | |
2312 | int ret = 0; | |
2313 | xmlNodePtr context_node; | |
2314 | ||
2315 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2316 | context_node = xmlNextElementSibling(context_node)) { | |
2317 | ret = process_context_node(context_node, handle, channel_name); | |
2318 | if (ret) { | |
2319 | goto end; | |
2320 | } | |
2321 | } | |
2322 | end: | |
2323 | return ret; | |
2324 | } | |
2325 | ||
847a5916 JR |
2326 | static |
2327 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2328 | struct lttng_handle *handle) | |
2329 | { | |
dd49e13f | 2330 | int ret = 0, child; |
847a5916 JR |
2331 | xmlNodePtr targets_node = NULL; |
2332 | xmlNodePtr node; | |
2333 | ||
2334 | assert(handle); | |
2335 | assert(pid_tracker_node); | |
2336 | /* get the targets node */ | |
2337 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2338 | node = xmlNextElementSibling(node)) { | |
2339 | if (!strcmp((const char *) node->name, | |
2340 | config_element_targets)) { | |
2341 | targets_node = node; | |
2342 | break; | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | if (!targets_node) { | |
2347 | ret = LTTNG_ERR_INVALID; | |
2348 | goto end; | |
2349 | } | |
2350 | ||
2351 | /* Go through all pid_target node */ | |
2352 | child = xmlChildElementCount(targets_node); | |
2353 | if (child == 0) { | |
2354 | /* The session is explicitly set to target nothing. */ | |
2355 | ret = lttng_untrack_pid(handle, -1); | |
2356 | if (ret) { | |
2357 | goto end; | |
2358 | } | |
2359 | } | |
2360 | for (node = xmlFirstElementChild(targets_node); node; | |
2361 | node = xmlNextElementSibling(node)) { | |
2362 | xmlNodePtr pid_target_node = node; | |
2363 | ||
2364 | /* get pid node and track it */ | |
2365 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2366 | node = xmlNextElementSibling(node)) { | |
2367 | if (!strcmp((const char *) node->name, | |
2368 | config_element_pid)) { | |
2369 | int64_t pid; | |
2370 | xmlChar *content = NULL; | |
2371 | ||
2372 | content = xmlNodeGetContent(node); | |
2373 | if (!content) { | |
2374 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2375 | goto end; | |
2376 | } | |
2377 | ||
2378 | ret = parse_int(content, &pid); | |
2379 | free(content); | |
2380 | if (ret) { | |
2381 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2382 | goto end; | |
2383 | } | |
2384 | ||
2385 | ret = lttng_track_pid(handle, (int) pid); | |
2386 | if (ret) { | |
2387 | goto end; | |
2388 | } | |
2389 | } | |
2390 | } | |
2391 | node = pid_target_node; | |
2392 | } | |
2393 | ||
2394 | end: | |
2395 | return ret; | |
2396 | } | |
2397 | ||
dcf266c0 JG |
2398 | static |
2399 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2400 | { | |
2401 | int ret; | |
2402 | struct lttng_domain domain = { 0 }; | |
2403 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2404 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2405 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2406 | xmlNodePtr trackers_node = NULL; |
2407 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2408 | xmlNodePtr node; |
2409 | ||
2410 | assert(session_name); | |
2411 | ||
2412 | ret = init_domain(domain_node, &domain); | |
2413 | if (ret) { | |
2414 | goto end; | |
2415 | } | |
2416 | ||
2417 | handle = lttng_create_handle(session_name, &domain); | |
2418 | if (!handle) { | |
2419 | ret = -LTTNG_ERR_NOMEM; | |
2420 | goto end; | |
2421 | } | |
2422 | ||
2423 | /* get the channels node */ | |
2424 | for (node = xmlFirstElementChild(domain_node); node; | |
2425 | node = xmlNextElementSibling(node)) { | |
2426 | if (!strcmp((const char *) node->name, | |
2427 | config_element_channels)) { | |
2428 | channels_node = node; | |
2429 | break; | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | if (!channels_node) { | |
2434 | goto end; | |
2435 | } | |
2436 | ||
2437 | /* create all channels */ | |
2438 | for (node = xmlFirstElementChild(channels_node); node; | |
2439 | node = xmlNextElementSibling(node)) { | |
dcf266c0 JG |
2440 | xmlNodePtr contexts_node = NULL; |
2441 | xmlNodePtr events_node = NULL; | |
2442 | xmlNodePtr channel_attr_node; | |
2443 | ||
4fc2b126 JR |
2444 | channel = lttng_channel_create(&domain); |
2445 | if (!channel) { | |
2446 | ret = -1; | |
2447 | goto end; | |
2448 | } | |
dcf266c0 JG |
2449 | |
2450 | for (channel_attr_node = xmlFirstElementChild(node); | |
2451 | channel_attr_node; channel_attr_node = | |
2452 | xmlNextElementSibling(channel_attr_node)) { | |
2453 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2454 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2455 | if (ret) { |
2456 | goto end; | |
2457 | } | |
2458 | } | |
2459 | ||
4fc2b126 | 2460 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2461 | if (ret < 0) { |
2462 | goto end; | |
2463 | } | |
2464 | ||
4fc2b126 | 2465 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2466 | if (ret) { |
2467 | goto end; | |
2468 | } | |
2469 | ||
2470 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2471 | channel->name); |
dcf266c0 JG |
2472 | if (ret) { |
2473 | goto end; | |
2474 | } | |
4fc2b126 JR |
2475 | |
2476 | lttng_channel_destroy(channel); | |
dcf266c0 | 2477 | } |
4fc2b126 | 2478 | channel = NULL; |
847a5916 JR |
2479 | |
2480 | /* get the trackers node */ | |
2481 | for (node = xmlFirstElementChild(domain_node); node; | |
2482 | node = xmlNextElementSibling(node)) { | |
2483 | if (!strcmp((const char *) node->name, | |
2484 | config_element_trackers)) { | |
2485 | trackers_node = node; | |
2486 | break; | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | if (!trackers_node) { | |
2491 | goto end; | |
2492 | } | |
2493 | ||
2494 | for (node = xmlFirstElementChild(trackers_node); node; | |
2495 | node = xmlNextElementSibling(node)) { | |
2496 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2497 | pid_tracker_node = node; | |
2498 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2499 | if (ret) { | |
2500 | goto end; | |
2501 | } | |
2502 | } | |
2503 | } | |
2504 | ||
2505 | if (!pid_tracker_node) { | |
2506 | lttng_track_pid(handle, -1); | |
2507 | } | |
2508 | ||
dcf266c0 | 2509 | end: |
4fc2b126 | 2510 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2511 | lttng_destroy_handle(handle); |
2512 | return ret; | |
2513 | } | |
2514 | ||
2515 | static | |
2516 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
2517 | int overwrite, |
2518 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2519 | { |
2520 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 2521 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
2522 | rotation_timer_interval = 0, |
2523 | rotation_size = 0; | |
d324faf7 | 2524 | xmlChar *name = NULL; |
9e7c9f56 | 2525 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2526 | xmlNodePtr domains_node = NULL; |
2527 | xmlNodePtr output_node = NULL; | |
2528 | xmlNodePtr node; | |
90936dcf | 2529 | xmlNodePtr attributes_child; |
dcf266c0 JG |
2530 | struct lttng_domain *kernel_domain = NULL; |
2531 | struct lttng_domain *ust_domain = NULL; | |
2532 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2533 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2534 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2535 | |
2536 | for (node = xmlFirstElementChild(session_node); node; | |
2537 | node = xmlNextElementSibling(node)) { | |
2538 | if (!name && !strcmp((const char *) node->name, | |
2539 | config_element_name)) { | |
2540 | /* name */ | |
2541 | xmlChar *node_content = xmlNodeGetContent(node); | |
2542 | if (!node_content) { | |
2543 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2544 | goto error; |
dcf266c0 JG |
2545 | } |
2546 | ||
d324faf7 | 2547 | name = node_content; |
dcf266c0 JG |
2548 | } else if (!domains_node && !strcmp((const char *) node->name, |
2549 | config_element_domains)) { | |
2550 | /* domains */ | |
2551 | domains_node = node; | |
2552 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2553 | config_element_started)) { | |
2554 | /* started */ | |
2555 | xmlChar *node_content = xmlNodeGetContent(node); | |
2556 | if (!node_content) { | |
2557 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2558 | goto error; |
dcf266c0 JG |
2559 | } |
2560 | ||
2561 | ret = parse_bool(node_content, &started); | |
2562 | free(node_content); | |
2563 | if (ret) { | |
2564 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2565 | goto error; |
dcf266c0 JG |
2566 | } |
2567 | } else if (!output_node && !strcmp((const char *) node->name, | |
2568 | config_element_output)) { | |
2569 | /* output */ | |
2570 | output_node = node; | |
9e7c9f56 JR |
2571 | } else if (!shm_path && !strcmp((const char *) node->name, |
2572 | config_element_shared_memory_path)) { | |
2573 | /* shared memory path */ | |
2574 | xmlChar *node_content = xmlNodeGetContent(node); | |
2575 | if (!node_content) { | |
2576 | ret = -LTTNG_ERR_NOMEM; | |
2577 | goto error; | |
2578 | } | |
2579 | ||
2580 | shm_path = node_content; | |
dcf266c0 | 2581 | } else { |
259c2674 JD |
2582 | /* |
2583 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
2584 | * rotation_timer_interval. |
2585 | */ | |
2586 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
2587 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
2588 | if (!strcmp((const char *) attributes_child->name, | |
2589 | config_element_snapshot_mode)) { | |
2590 | /* snapshot_mode */ | |
2591 | xmlChar *snapshot_mode_content = | |
2592 | xmlNodeGetContent(attributes_child); | |
2593 | if (!snapshot_mode_content) { | |
2594 | ret = -LTTNG_ERR_NOMEM; | |
2595 | goto error; | |
2596 | } | |
dcf266c0 | 2597 | |
90936dcf JD |
2598 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
2599 | free(snapshot_mode_content); | |
2600 | if (ret) { | |
2601 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2602 | goto error; | |
2603 | } | |
2604 | } else if (!strcmp((const char *) attributes_child->name, | |
2605 | config_element_live_timer_interval)) { | |
2606 | /* live_timer_interval */ | |
2607 | xmlChar *timer_interval_content = | |
2608 | xmlNodeGetContent(attributes_child); | |
2609 | if (!timer_interval_content) { | |
2610 | ret = -LTTNG_ERR_NOMEM; | |
2611 | goto error; | |
2612 | } | |
dcf266c0 | 2613 | |
90936dcf JD |
2614 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
2615 | free(timer_interval_content); | |
2616 | if (ret) { | |
2617 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2618 | goto error; | |
2619 | } | |
dcf266c0 | 2620 | } |
90936dcf JD |
2621 | if (!strcmp((const char *) attributes_child->name, |
2622 | config_element_rotation_timer_interval)) { | |
2623 | /* rotation_timer_interval */ | |
2624 | xmlChar *timer_interval_content = | |
2625 | xmlNodeGetContent(attributes_child); | |
2626 | if (!timer_interval_content) { | |
2627 | ret = -LTTNG_ERR_NOMEM; | |
2628 | goto error; | |
2629 | } | |
2630 | ||
2631 | ret = parse_uint(timer_interval_content, &rotation_timer_interval); | |
2632 | free(timer_interval_content); | |
2633 | if (ret) { | |
2634 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2635 | goto error; | |
2636 | } | |
259c2674 | 2637 | } |
90936dcf JD |
2638 | if (!strcmp((const char *) attributes_child->name, |
2639 | config_element_rotation_size)) { | |
2640 | /* rotation_size */ | |
2641 | xmlChar *rotation_size_content = | |
2642 | xmlNodeGetContent(attributes_child); | |
2643 | if (!rotation_size_content) { | |
2644 | ret = -LTTNG_ERR_NOMEM; | |
2645 | goto error; | |
2646 | } | |
259c2674 | 2647 | |
90936dcf JD |
2648 | ret = parse_uint(rotation_size_content, &rotation_size); |
2649 | free(rotation_size_content); | |
2650 | if (ret) { | |
2651 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2652 | goto error; | |
2653 | } | |
259c2674 JD |
2654 | } |
2655 | } | |
dcf266c0 JG |
2656 | } |
2657 | } | |
2658 | ||
2659 | if (!name) { | |
2660 | /* Mandatory attribute, as defined in the session XSD */ | |
2661 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2662 | goto error; |
dcf266c0 JG |
2663 | } |
2664 | ||
d324faf7 | 2665 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2666 | /* This is not the session we are looking for */ |
c2da8cde DG |
2667 | ret = -LTTNG_ERR_NO_SESSION; |
2668 | goto error; | |
dcf266c0 JG |
2669 | } |
2670 | ||
2671 | /* Init domains to create the session handles */ | |
2672 | for (node = xmlFirstElementChild(domains_node); node; | |
2673 | node = xmlNextElementSibling(node)) { | |
2674 | struct lttng_domain *domain; | |
2675 | ||
2676 | domain = zmalloc(sizeof(*domain)); | |
2677 | if (!domain) { | |
2678 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2679 | goto error; |
dcf266c0 JG |
2680 | } |
2681 | ||
2682 | ret = init_domain(node, domain); | |
2683 | if (ret) { | |
2684 | goto domain_init_error; | |
2685 | } | |
2686 | ||
2687 | switch (domain->type) { | |
2688 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2689 | if (kernel_domain) { |
2690 | /* Same domain seen twice, invalid! */ | |
2691 | goto domain_init_error; | |
2692 | } | |
dcf266c0 JG |
2693 | kernel_domain = domain; |
2694 | break; | |
2695 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2696 | if (ust_domain) { |
2697 | /* Same domain seen twice, invalid! */ | |
2698 | goto domain_init_error; | |
2699 | } | |
dcf266c0 JG |
2700 | ust_domain = domain; |
2701 | break; | |
2702 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2703 | if (jul_domain) { |
2704 | /* Same domain seen twice, invalid! */ | |
2705 | goto domain_init_error; | |
2706 | } | |
dcf266c0 JG |
2707 | jul_domain = domain; |
2708 | break; | |
5cdb6027 DG |
2709 | case LTTNG_DOMAIN_LOG4J: |
2710 | if (log4j_domain) { | |
2711 | /* Same domain seen twice, invalid! */ | |
2712 | goto domain_init_error; | |
2713 | } | |
2714 | log4j_domain = domain; | |
2715 | break; | |
0e115563 DG |
2716 | case LTTNG_DOMAIN_PYTHON: |
2717 | if (python_domain) { | |
2718 | /* Same domain seen twice, invalid! */ | |
2719 | goto domain_init_error; | |
2720 | } | |
2721 | python_domain = domain; | |
2722 | break; | |
dcf266c0 JG |
2723 | default: |
2724 | WARN("Invalid domain type"); | |
2725 | goto domain_init_error; | |
2726 | } | |
2727 | continue; | |
2728 | domain_init_error: | |
2729 | free(domain); | |
2730 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2731 | goto error; |
dcf266c0 JG |
2732 | } |
2733 | ||
2aaf5fc7 JR |
2734 | /* Apply overrides */ |
2735 | if (overrides) { | |
2736 | if (overrides->session_name) { | |
2737 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
2738 | if (!name_override) { | |
2739 | ret = -LTTNG_ERR_NOMEM; | |
2740 | goto error; | |
2741 | } | |
2742 | ||
2743 | /* Overrides the session name to the provided name */ | |
2744 | xmlFree(name); | |
2745 | name = name_override; | |
2746 | } | |
2747 | } | |
2748 | ||
40b4155f | 2749 | if (overwrite) { |
dcf266c0 | 2750 | /* Destroy session if it exists */ |
d324faf7 | 2751 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2752 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2753 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2754 | goto error; |
dcf266c0 JG |
2755 | } |
2756 | } | |
2757 | ||
2758 | /* Create session type depending on output type */ | |
2759 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
2760 | ret = create_snapshot_session((const char *) name, output_node, |
2761 | overrides); | |
dcf266c0 JG |
2762 | } else if (live_timer_interval && |
2763 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2764 | ret = create_session((const char *) name, kernel_domain, |
2765 | ust_domain, jul_domain, log4j_domain, | |
1b08cbce | 2766 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
2767 | } else { |
2768 | /* regular session */ | |
d324faf7 JG |
2769 | ret = create_session((const char *) name, kernel_domain, |
2770 | ust_domain, jul_domain, log4j_domain, | |
1b08cbce | 2771 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 2772 | } |
dcf266c0 | 2773 | if (ret) { |
c2da8cde | 2774 | goto error; |
dcf266c0 JG |
2775 | } |
2776 | ||
9e7c9f56 JR |
2777 | if (shm_path) { |
2778 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2779 | (const char *) shm_path); |
9e7c9f56 JR |
2780 | if (ret) { |
2781 | goto error; | |
2782 | } | |
2783 | } | |
2784 | ||
dcf266c0 JG |
2785 | for (node = xmlFirstElementChild(domains_node); node; |
2786 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2787 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2788 | if (ret) { |
2789 | goto end; | |
2790 | } | |
2791 | } | |
2792 | ||
90936dcf | 2793 | if (rotation_timer_interval || rotation_size) { |
259c2674 JD |
2794 | struct lttng_rotation_schedule_attr *rotation_attr = lttng_rotation_schedule_attr_create(); |
2795 | ||
2796 | if (!rotation_attr) { | |
2797 | goto error; | |
2798 | } | |
2799 | ret = lttng_rotation_schedule_attr_set_session_name(rotation_attr, (const char *) name); | |
2800 | if (ret) { | |
2801 | lttng_rotation_schedule_attr_destroy(rotation_attr); | |
2802 | goto error; | |
2803 | } | |
2804 | lttng_rotation_schedule_attr_set_timer_period(rotation_attr, | |
2805 | rotation_timer_interval); | |
90936dcf | 2806 | lttng_rotation_schedule_attr_set_size(rotation_attr, rotation_size); |
259c2674 JD |
2807 | ret = lttng_rotation_set_schedule(rotation_attr); |
2808 | lttng_rotation_schedule_attr_destroy(rotation_attr); | |
2809 | if (ret) { | |
2810 | goto error; | |
2811 | } | |
2812 | } | |
2813 | ||
dcf266c0 | 2814 | if (started) { |
d324faf7 | 2815 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2816 | if (ret) { |
2817 | goto end; | |
2818 | } | |
2819 | } | |
c2da8cde | 2820 | |
dcf266c0 | 2821 | end: |
b2579dc1 | 2822 | if (ret < 0) { |
d324faf7 JG |
2823 | ERR("Failed to load session %s: %s", (const char *) name, |
2824 | lttng_strerror(ret)); | |
2825 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2826 | } |
2827 | ||
c2da8cde | 2828 | error: |
dcf266c0 JG |
2829 | free(kernel_domain); |
2830 | free(ust_domain); | |
2831 | free(jul_domain); | |
5cdb6027 | 2832 | free(log4j_domain); |
135a3893 | 2833 | free(python_domain); |
d324faf7 | 2834 | xmlFree(name); |
9e7c9f56 | 2835 | xmlFree(shm_path); |
dcf266c0 JG |
2836 | return ret; |
2837 | } | |
2838 | ||
cf53c06d DG |
2839 | /* |
2840 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2841 | * Return -1 if the path is EPERM. | |
2842 | */ | |
2843 | static int validate_file_read_creds(const char *path) | |
2844 | { | |
2845 | int ret; | |
2846 | ||
2847 | assert(path); | |
2848 | ||
2849 | /* Can we read the file. */ | |
2850 | ret = access(path, R_OK); | |
2851 | if (!ret) { | |
2852 | goto valid; | |
2853 | } | |
2854 | if (errno == EACCES) { | |
2855 | return -1; | |
2856 | } else { | |
2857 | /* Invalid. */ | |
2858 | return 0; | |
2859 | } | |
2860 | valid: | |
2861 | return 1; | |
2862 | } | |
2863 | ||
dcf266c0 JG |
2864 | static |
2865 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
2866 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
2867 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2868 | { |
2869 | int ret, session_found = !session_name; | |
2870 | xmlDocPtr doc = NULL; | |
2871 | xmlNodePtr sessions_node; | |
2872 | xmlNodePtr session_node; | |
dcf266c0 JG |
2873 | |
2874 | assert(path); | |
2875 | assert(validation_ctx); | |
2876 | ||
cf53c06d DG |
2877 | ret = validate_file_read_creds(path); |
2878 | if (ret != 1) { | |
2879 | if (ret == -1) { | |
2880 | ret = -LTTNG_ERR_EPERM; | |
2881 | } else { | |
2882 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2883 | } | |
dcf266c0 JG |
2884 | goto end; |
2885 | } | |
2886 | ||
2887 | doc = xmlParseFile(path); | |
2888 | if (!doc) { | |
2889 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2890 | goto end; | |
2891 | } | |
2892 | ||
2893 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2894 | if (ret) { | |
2895 | ERR("Session configuration file validation failed"); | |
2896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2897 | goto end; | |
2898 | } | |
2899 | ||
2900 | sessions_node = xmlDocGetRootElement(doc); | |
2901 | if (!sessions_node) { | |
2902 | goto end; | |
2903 | } | |
2904 | ||
2905 | for (session_node = xmlFirstElementChild(sessions_node); | |
2906 | session_node; session_node = | |
2907 | xmlNextElementSibling(session_node)) { | |
2908 | ret = process_session_node(session_node, | |
1b08cbce | 2909 | session_name, overwrite, overrides); |
dcf266c0 JG |
2910 | if (session_name && ret == 0) { |
2911 | /* Target session found and loaded */ | |
2912 | session_found = 1; | |
2913 | break; | |
2914 | } | |
2915 | } | |
2916 | end: | |
2917 | xmlFreeDoc(doc); | |
2918 | if (!ret) { | |
a96bc65d | 2919 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
2920 | } |
2921 | return ret; | |
2922 | } | |
2923 | ||
60f70355 JG |
2924 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2925 | static | |
2926 | struct dirent *alloc_dirent(const char *path) | |
2927 | { | |
2928 | size_t len; | |
2929 | long name_max; | |
2930 | struct dirent *entry; | |
2931 | ||
2932 | name_max = pathconf(path, _PC_NAME_MAX); | |
2933 | if (name_max == -1) { | |
2934 | name_max = PATH_MAX; | |
2935 | } | |
2936 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2937 | entry = zmalloc(len); | |
2938 | return entry; | |
2939 | } | |
2940 | ||
dcf266c0 JG |
2941 | static |
2942 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
2943 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
2944 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2945 | { |
2946 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2947 | DIR *directory = NULL; |
2948 | ||
2949 | assert(path); | |
2950 | assert(validation_ctx); | |
2951 | ||
4af16958 DG |
2952 | directory = opendir(path); |
2953 | if (!directory) { | |
11143783 DG |
2954 | switch (errno) { |
2955 | case ENOTDIR: | |
0f0a81b5 DG |
2956 | /* Try the file loading. */ |
2957 | break; | |
11143783 DG |
2958 | case ENOENT: |
2959 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2960 | goto end; | |
2961 | default: | |
0f0a81b5 DG |
2962 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2963 | goto end; | |
4af16958 | 2964 | } |
dcf266c0 | 2965 | } |
4af16958 | 2966 | if (directory) { |
dcf266c0 JG |
2967 | struct dirent *entry; |
2968 | struct dirent *result; | |
2969 | char *file_path = NULL; | |
2970 | size_t path_len = strlen(path); | |
2971 | ||
2972 | if (path_len >= PATH_MAX) { | |
2973 | ret = -LTTNG_ERR_INVALID; | |
2974 | goto end; | |
2975 | } | |
2976 | ||
60f70355 | 2977 | entry = alloc_dirent(path); |
dcf266c0 JG |
2978 | if (!entry) { |
2979 | ret = -LTTNG_ERR_NOMEM; | |
2980 | goto end; | |
2981 | } | |
2982 | ||
dcf266c0 JG |
2983 | file_path = zmalloc(PATH_MAX); |
2984 | if (!file_path) { | |
2985 | ret = -LTTNG_ERR_NOMEM; | |
2986 | free(entry); | |
2987 | goto end; | |
2988 | } | |
2989 | ||
2990 | strncpy(file_path, path, path_len); | |
2991 | if (file_path[path_len - 1] != '/') { | |
2992 | file_path[path_len++] = '/'; | |
2993 | } | |
2994 | ||
4af16958 | 2995 | ret = 0; |
dcf266c0 JG |
2996 | /* Search for *.lttng files */ |
2997 | while (!readdir_r(directory, entry, &result) && result) { | |
2998 | size_t file_name_len = strlen(result->d_name); | |
2999 | ||
3000 | if (file_name_len <= | |
3001 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3002 | continue; | |
3003 | } | |
3004 | ||
431f702e | 3005 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
3006 | continue; |
3007 | } | |
3008 | ||
3009 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
3010 | result->d_name + file_name_len - sizeof( | |
3011 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
3012 | continue; | |
3013 | } | |
3014 | ||
3015 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
3016 | file_path[path_len + file_name_len] = '\0'; | |
3017 | ||
3018 | ret = load_session_from_file(file_path, session_name, | |
1b08cbce | 3019 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3020 | if (session_name && !ret) { |
3021 | session_found = 1; | |
3022 | break; | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | free(entry); | |
3027 | free(file_path); | |
3028 | } else { | |
3029 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3030 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3031 | if (ret) { |
3032 | goto end; | |
3033 | } else { | |
3034 | session_found = 1; | |
3035 | } | |
3036 | } | |
3037 | ||
3038 | end: | |
3039 | if (directory) { | |
3040 | if (closedir(directory)) { | |
3041 | PERROR("closedir"); | |
3042 | } | |
3043 | } | |
3044 | ||
464133ea | 3045 | if (session_found && !ret) { |
6c66fa0f | 3046 | ret = 0; |
dcf266c0 JG |
3047 | } |
3048 | ||
3049 | return ret; | |
3050 | } | |
3051 | ||
ab38c13f DG |
3052 | /* |
3053 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3054 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3055 | */ |
3056 | static int validate_path_creds(const char *path) | |
3057 | { | |
3058 | int ret, uid = getuid(); | |
3059 | struct stat buf; | |
3060 | ||
3061 | assert(path); | |
3062 | ||
cf53c06d | 3063 | if (uid == 0) { |
ab38c13f DG |
3064 | goto valid; |
3065 | } | |
3066 | ||
3067 | ret = stat(path, &buf); | |
3068 | if (ret < 0) { | |
3069 | if (errno != ENOENT) { | |
3070 | PERROR("stat"); | |
3071 | } | |
ab38c13f DG |
3072 | goto valid; |
3073 | } | |
3074 | ||
3075 | if (buf.st_uid != uid) { | |
3076 | goto invalid; | |
3077 | } | |
3078 | ||
3079 | valid: | |
ab38c13f | 3080 | return 1; |
cf53c06d DG |
3081 | invalid: |
3082 | return 0; | |
ab38c13f DG |
3083 | } |
3084 | ||
dcf266c0 JG |
3085 | LTTNG_HIDDEN |
3086 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3087 | int overwrite, unsigned int autoload, |
3088 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3089 | { |
3090 | int ret; | |
6c66fa0f | 3091 | bool session_loaded = false; |
cf53c06d | 3092 | const char *path_ptr = NULL; |
dcf266c0 JG |
3093 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3094 | ||
3095 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3096 | if (ret) { | |
3097 | goto end; | |
3098 | } | |
3099 | ||
3100 | if (!path) { | |
ab38c13f DG |
3101 | char *home_path; |
3102 | const char *sys_path; | |
3103 | ||
dcf266c0 | 3104 | /* Try home path */ |
ab38c13f | 3105 | home_path = utils_get_home_dir(); |
dcf266c0 | 3106 | if (home_path) { |
ab38c13f | 3107 | char path[PATH_MAX]; |
dcf266c0 | 3108 | |
d4fcf703 DG |
3109 | /* |
3110 | * Try user session configuration path. Ignore error here so we can | |
3111 | * continue loading the system wide sessions. | |
3112 | */ | |
ab38c13f DG |
3113 | if (autoload) { |
3114 | ret = snprintf(path, sizeof(path), | |
3115 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3116 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3117 | if (ret < 0) { |
3118 | PERROR("snprintf session autoload home config path"); | |
3119 | goto end; | |
3120 | } | |
3121 | ||
3122 | /* | |
3123 | * Credentials are only validated for the autoload in order to | |
3124 | * avoid any user session daemon to try to load kernel sessions | |
3125 | * automatically and failing all the times. | |
3126 | */ | |
3127 | ret = validate_path_creds(path); | |
3128 | if (ret) { | |
3129 | path_ptr = path; | |
3130 | } | |
ab38c13f DG |
3131 | } else { |
3132 | ret = snprintf(path, sizeof(path), | |
3133 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3134 | if (ret < 0) { |
3135 | PERROR("snprintf session home config path"); | |
3136 | goto end; | |
3137 | } | |
3138 | path_ptr = path; | |
ab38c13f | 3139 | } |
cf53c06d DG |
3140 | if (path_ptr) { |
3141 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3142 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3143 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3144 | goto end; | |
3145 | } | |
3146 | /* | |
3147 | * Continue even if the session was found since we have to try | |
3148 | * the system wide sessions. | |
3149 | */ | |
6c66fa0f | 3150 | session_loaded = true; |
ab38c13f | 3151 | } |
d4fcf703 | 3152 | } |
ab38c13f | 3153 | |
cf53c06d DG |
3154 | /* Reset path pointer for the system wide dir. */ |
3155 | path_ptr = NULL; | |
3156 | ||
d4fcf703 DG |
3157 | /* Try system wide configuration directory. */ |
3158 | if (autoload) { | |
3159 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3160 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3161 | ret = validate_path_creds(sys_path); |
3162 | if (ret) { | |
3163 | path_ptr = sys_path; | |
3164 | } | |
d4fcf703 | 3165 | } else { |
cf53c06d DG |
3166 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3167 | path_ptr = sys_path; | |
d4fcf703 DG |
3168 | } |
3169 | ||
cf53c06d DG |
3170 | if (path_ptr) { |
3171 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3172 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3173 | if (!ret) { |
3174 | session_loaded = true; | |
3175 | } | |
dcf266c0 JG |
3176 | } |
3177 | } else { | |
3178 | ret = access(path, F_OK); | |
3179 | if (ret < 0) { | |
3180 | PERROR("access"); | |
3181 | switch (errno) { | |
3182 | case ENOENT: | |
3183 | ret = -LTTNG_ERR_INVALID; | |
3184 | WARN("Session configuration path does not exist."); | |
3185 | break; | |
3186 | case EACCES: | |
3187 | ret = -LTTNG_ERR_EPERM; | |
3188 | break; | |
3189 | default: | |
3190 | ret = -LTTNG_ERR_UNK; | |
3191 | break; | |
3192 | } | |
3193 | goto end; | |
3194 | } | |
3195 | ||
3196 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3197 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3198 | } |
3199 | end: | |
3200 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3201 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3202 | /* | |
3203 | * Don't report an error if no sessions are found when called | |
3204 | * without a session_name or a search path. | |
3205 | */ | |
3206 | ret = 0; | |
3207 | } | |
6c66fa0f JG |
3208 | |
3209 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3210 | /* A matching session was found in one of the search paths. */ | |
3211 | ret = 0; | |
3212 | } | |
dcf266c0 JG |
3213 | return ret; |
3214 | } | |
56766c75 JG |
3215 | |
3216 | static | |
3217 | void __attribute__((destructor)) session_config_exit(void) | |
3218 | { | |
3219 | xmlCleanupParser(); | |
3220 | } |