Commit | Line | Data |
---|---|---|
1501a7f3 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
1501a7f3 | 19 | #include <assert.h> |
1501a7f3 | 20 | #include <ctype.h> |
1501a7f3 JG |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
36f2332b | 24 | #include <inttypes.h> |
dcf266c0 JG |
25 | #include <dirent.h> |
26 | #include <unistd.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/stat.h> | |
6c66fa0f | 29 | #include <stdbool.h> |
1501a7f3 JG |
30 | |
31 | #include <common/defaults.h> | |
32 | #include <common/error.h> | |
33 | #include <common/macros.h> | |
34 | #include <common/utils.h> | |
cce35f91 | 35 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 36 | #include <common/compat/getenv.h> |
fb198a11 JG |
37 | #include <lttng/lttng-error.h> |
38 | #include <libxml/parser.h> | |
39 | #include <libxml/valid.h> | |
40 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
41 | #include <libxml/tree.h> |
42 | #include <lttng/lttng.h> | |
43 | #include <lttng/snapshot.h> | |
259c2674 | 44 | #include <lttng/rotation.h> |
1501a7f3 | 45 | |
f40ef1d5 | 46 | #include "session-config.h" |
36f2332b | 47 | #include "config-internal.h" |
1501a7f3 JG |
48 | |
49 | struct handler_filter_args { | |
50 | const char* section; | |
51 | config_entry_handler_cb handler; | |
52 | void *user_data; | |
53 | }; | |
54 | ||
dcf266c0 JG |
55 | struct session_config_validation_ctx { |
56 | xmlSchemaParserCtxtPtr parser_ctx; | |
57 | xmlSchemaPtr schema; | |
58 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
59 | }; | |
60 | ||
1501a7f3 JG |
61 | const char * const config_str_yes = "yes"; |
62 | const char * const config_str_true = "true"; | |
63 | const char * const config_str_on = "on"; | |
64 | const char * const config_str_no = "no"; | |
65 | const char * const config_str_false = "false"; | |
66 | const char * const config_str_off = "off"; | |
36f2332b | 67 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 68 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
69 | const char * const config_xml_indent_string = "\t"; |
70 | const char * const config_xml_true = "true"; | |
71 | const char * const config_xml_false = "false"; | |
1501a7f3 | 72 | |
fb198a11 JG |
73 | const char * const config_element_channel = "channel"; |
74 | const char * const config_element_channels = "channels"; | |
75 | const char * const config_element_domain = "domain"; | |
76 | const char * const config_element_domains = "domains"; | |
77 | const char * const config_element_event = "event"; | |
78 | const char * const config_element_events = "events"; | |
79 | const char * const config_element_context = "context"; | |
80 | const char * const config_element_contexts = "contexts"; | |
81 | const char * const config_element_attributes = "attributes"; | |
82 | const char * const config_element_exclusion = "exclusion"; | |
83 | const char * const config_element_exclusions = "exclusions"; | |
84 | const char * const config_element_function_attributes = "function_attributes"; | |
85 | const char * const config_element_probe_attributes = "probe_attributes"; | |
86 | const char * const config_element_symbol_name = "symbol_name"; | |
87 | const char * const config_element_address = "address"; | |
88 | const char * const config_element_offset = "offset"; | |
89 | const char * const config_element_name = "name"; | |
90 | const char * const config_element_enabled = "enabled"; | |
91 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
92 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
93 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
94 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
95 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
96 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
97 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
98 | const char * const config_element_output = "output"; |
99 | const char * const config_element_output_type = "output_type"; | |
100 | const char * const config_element_tracefile_size = "tracefile_size"; | |
101 | const char * const config_element_tracefile_count = "tracefile_count"; | |
102 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
103 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
104 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
105 | const char * const config_element_type = "type"; |
106 | const char * const config_element_buffer_type = "buffer_type"; | |
107 | const char * const config_element_session = "session"; | |
108 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
109 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
110 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
111 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
112 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
113 | const char * const config_element_config = "config"; |
114 | const char * const config_element_started = "started"; | |
115 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
116 | const char * const config_element_loglevel = "loglevel"; | |
117 | const char * const config_element_loglevel_type = "loglevel_type"; | |
118 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 119 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
120 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
121 | const char * const config_element_consumer_output = "consumer_output"; | |
122 | const char * const config_element_destination = "destination"; | |
123 | const char * const config_element_path = "path"; | |
124 | const char * const config_element_net_output = "net_output"; | |
125 | const char * const config_element_control_uri = "control_uri"; | |
126 | const char * const config_element_data_uri = "data_uri"; | |
127 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
128 | const char * const config_element_pid = "pid"; |
129 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 130 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 JR |
131 | const char * const config_element_pid_tracker = "pid_tracker"; |
132 | const char * const config_element_trackers = "trackers"; | |
847a5916 JR |
133 | const char * const config_element_targets = "targets"; |
134 | const char * const config_element_target_pid = "pid_target"; | |
fb198a11 | 135 | |
ce6176f2 JG |
136 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
137 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
138 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
139 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
140 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 141 | |
fb198a11 JG |
142 | const char * const config_domain_type_kernel = "KERNEL"; |
143 | const char * const config_domain_type_ust = "UST"; | |
144 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 145 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 146 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
147 | |
148 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
149 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
150 | const char * const config_buffer_type_global = "GLOBAL"; | |
151 | ||
152 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
153 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
154 | ||
155 | const char * const config_output_type_splice = "SPLICE"; | |
156 | const char * const config_output_type_mmap = "MMAP"; | |
157 | ||
158 | const char * const config_loglevel_type_all = "ALL"; | |
159 | const char * const config_loglevel_type_range = "RANGE"; | |
160 | const char * const config_loglevel_type_single = "SINGLE"; | |
161 | ||
162 | const char * const config_event_type_all = "ALL"; | |
163 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
164 | const char * const config_event_type_probe = "PROBE"; | |
165 | const char * const config_event_type_function = "FUNCTION"; | |
166 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
167 | const char * const config_event_type_noop = "NOOP"; | |
168 | const char * const config_event_type_syscall = "SYSCALL"; | |
169 | const char * const config_event_type_kprobe = "KPROBE"; | |
170 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
171 | ||
172 | const char * const config_event_context_pid = "PID"; | |
173 | const char * const config_event_context_procname = "PROCNAME"; | |
174 | const char * const config_event_context_prio = "PRIO"; | |
175 | const char * const config_event_context_nice = "NICE"; | |
176 | const char * const config_event_context_vpid = "VPID"; | |
177 | const char * const config_event_context_tid = "TID"; | |
178 | const char * const config_event_context_vtid = "VTID"; | |
179 | const char * const config_event_context_ppid = "PPID"; | |
180 | const char * const config_event_context_vppid = "VPPID"; | |
181 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
182 | const char * const config_event_context_hostname = "HOSTNAME"; | |
183 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 184 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
185 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
186 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
187 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
188 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
189 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
190 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
191 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
fb198a11 | 192 | |
fbd987c9 JG |
193 | /* Deprecated symbols */ |
194 | const char * const config_element_perf; | |
195 | ||
d7b645e2 JR |
196 | enum process_event_node_phase { |
197 | CREATION = 0, | |
198 | ENABLE = 1, | |
199 | }; | |
200 | ||
dcf266c0 JG |
201 | struct consumer_output { |
202 | int enabled; | |
203 | char *path; | |
204 | char *control_uri; | |
205 | char *data_uri; | |
206 | }; | |
207 | ||
1501a7f3 JG |
208 | static int config_entry_handler_filter(struct handler_filter_args *args, |
209 | const char *section, const char *name, const char *value) | |
210 | { | |
211 | int ret = 0; | |
212 | struct config_entry entry = { section, name, value }; | |
213 | ||
214 | assert(args); | |
215 | ||
216 | if (!section || !name || !value) { | |
217 | ret = -EIO; | |
218 | goto end; | |
219 | } | |
220 | ||
221 | if (args->section) { | |
222 | if (strcmp(args->section, section)) { | |
223 | goto end; | |
224 | } | |
225 | } | |
226 | ||
227 | ret = args->handler(&entry, args->user_data); | |
228 | end: | |
229 | return ret; | |
230 | } | |
231 | ||
232 | LTTNG_HIDDEN | |
233 | int config_get_section_entries(const char *override_path, const char *section, | |
234 | config_entry_handler_cb handler, void *user_data) | |
235 | { | |
236 | int ret = 0; | |
7ab02a27 | 237 | char *path; |
1501a7f3 JG |
238 | FILE *config_file = NULL; |
239 | struct handler_filter_args filter = { section, handler, user_data }; | |
240 | ||
7ab02a27 DG |
241 | /* First, try system-wide conf. file. */ |
242 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
243 | ||
244 | config_file = fopen(path, "r"); | |
245 | if (config_file) { | |
246 | DBG("Loading daemon conf file at %s", path); | |
247 | /* | |
248 | * Return value is not very important here since error or not, we | |
249 | * continue and try the next possible conf. file. | |
250 | */ | |
251 | (void) ini_parse_file(config_file, | |
252 | (ini_entry_handler) config_entry_handler_filter, | |
253 | (void *) &filter); | |
254 | fclose(config_file); | |
255 | } | |
256 | ||
257 | /* Second is the user local configuration. */ | |
258 | path = utils_get_home_dir(); | |
259 | if (path) { | |
260 | char fullpath[PATH_MAX]; | |
261 | ||
262 | ret = snprintf(fullpath, sizeof(fullpath), | |
263 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
264 | if (ret < 0) { | |
265 | PERROR("snprintf user conf. path"); | |
266 | goto error; | |
267 | } | |
268 | ||
269 | config_file = fopen(fullpath, "r"); | |
270 | if (config_file) { | |
271 | DBG("Loading daemon user conf file at %s", path); | |
272 | /* | |
273 | * Return value is not very important here since error or not, we | |
274 | * continue and try the next possible conf. file. | |
275 | */ | |
276 | (void) ini_parse_file(config_file, | |
277 | (ini_entry_handler) config_entry_handler_filter, | |
278 | (void *) &filter); | |
279 | fclose(config_file); | |
280 | } | |
281 | } | |
282 | ||
283 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
284 | if (override_path) { |
285 | config_file = fopen(override_path, "r"); | |
286 | if (config_file) { | |
7ab02a27 DG |
287 | DBG("Loading daemon command line conf file at %s", override_path); |
288 | (void) ini_parse_file(config_file, | |
289 | (ini_entry_handler) config_entry_handler_filter, | |
290 | (void *) &filter); | |
291 | fclose(config_file); | |
1501a7f3 JG |
292 | } else { |
293 | ERR("Failed to open daemon configuration file at %s", | |
294 | override_path); | |
295 | ret = -ENOENT; | |
7ab02a27 | 296 | goto error; |
1501a7f3 JG |
297 | } |
298 | } | |
299 | ||
7ab02a27 DG |
300 | /* Everything went well. */ |
301 | ret = 0; | |
1501a7f3 | 302 | |
7ab02a27 | 303 | error: |
1501a7f3 JG |
304 | return ret; |
305 | } | |
306 | ||
307 | LTTNG_HIDDEN | |
308 | int config_parse_value(const char *value) | |
309 | { | |
310 | int i, ret = 0; | |
311 | char *endptr, *lower_str; | |
312 | size_t len; | |
313 | unsigned long v; | |
314 | ||
315 | len = strlen(value); | |
316 | if (!len) { | |
317 | ret = -1; | |
318 | goto end; | |
319 | } | |
320 | ||
321 | v = strtoul(value, &endptr, 10); | |
322 | if (endptr != value) { | |
323 | ret = v; | |
324 | goto end; | |
325 | } | |
326 | ||
327 | lower_str = zmalloc(len + 1); | |
328 | if (!lower_str) { | |
329 | PERROR("zmalloc"); | |
330 | ret = -errno; | |
331 | goto end; | |
332 | } | |
333 | ||
334 | for (i = 0; i < len; i++) { | |
335 | lower_str[i] = tolower(value[i]); | |
336 | } | |
337 | ||
338 | if (!strcmp(lower_str, config_str_yes) || | |
339 | !strcmp(lower_str, config_str_true) || | |
340 | !strcmp(lower_str, config_str_on)) { | |
341 | ret = 1; | |
342 | } else if (!strcmp(lower_str, config_str_no) || | |
343 | !strcmp(lower_str, config_str_false) || | |
344 | !strcmp(lower_str, config_str_off)) { | |
345 | ret = 0; | |
346 | } else { | |
347 | ret = -1; | |
348 | } | |
349 | ||
350 | free(lower_str); | |
351 | end: | |
352 | return ret; | |
353 | } | |
36f2332b JG |
354 | |
355 | /* | |
356 | * Returns a xmlChar string which must be released using xmlFree(). | |
357 | */ | |
358 | static xmlChar *encode_string(const char *in_str) | |
359 | { | |
360 | xmlChar *out_str = NULL; | |
361 | xmlCharEncodingHandlerPtr handler; | |
362 | int out_len, ret, in_len; | |
363 | ||
364 | assert(in_str); | |
365 | ||
366 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
367 | if (!handler) { | |
368 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
369 | goto end; | |
370 | } | |
371 | ||
372 | in_len = strlen(in_str); | |
373 | /* | |
f76d886f JG |
374 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
375 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 376 | */ |
f76d886f | 377 | out_len = (in_len * 4) + 1; |
36f2332b JG |
378 | out_str = xmlMalloc(out_len); |
379 | if (!out_str) { | |
380 | goto end; | |
381 | } | |
382 | ||
383 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
384 | if (ret < 0) { | |
385 | xmlFree(out_str); | |
386 | out_str = NULL; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | /* out_len is now the size of out_str */ | |
391 | out_str[out_len] = '\0'; | |
392 | end: | |
393 | return out_str; | |
394 | } | |
395 | ||
396 | LTTNG_HIDDEN | |
705bb62f | 397 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
398 | { |
399 | int ret; | |
400 | struct config_writer *writer; | |
401 | xmlOutputBufferPtr buffer; | |
402 | ||
403 | writer = zmalloc(sizeof(struct config_writer)); | |
404 | if (!writer) { | |
405 | PERROR("zmalloc config_writer_create"); | |
406 | goto end; | |
407 | } | |
408 | ||
409 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
410 | if (!buffer) { | |
411 | goto error_destroy; | |
412 | } | |
413 | ||
414 | writer->writer = xmlNewTextWriter(buffer); | |
415 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
416 | config_xml_encoding, NULL); | |
417 | if (ret < 0) { | |
418 | goto error_destroy; | |
419 | } | |
420 | ||
421 | ret = xmlTextWriterSetIndentString(writer->writer, | |
422 | BAD_CAST config_xml_indent_string); | |
705bb62f | 423 | if (ret) { |
36f2332b JG |
424 | goto error_destroy; |
425 | } | |
426 | ||
705bb62f JRJ |
427 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
428 | if (ret) { | |
36f2332b JG |
429 | goto error_destroy; |
430 | } | |
431 | ||
432 | end: | |
433 | return writer; | |
434 | error_destroy: | |
435 | config_writer_destroy(writer); | |
436 | return NULL; | |
437 | } | |
438 | ||
439 | LTTNG_HIDDEN | |
440 | int config_writer_destroy(struct config_writer *writer) | |
441 | { | |
442 | int ret = 0; | |
443 | ||
444 | if (!writer) { | |
445 | ret = -EINVAL; | |
446 | goto end; | |
447 | } | |
448 | ||
449 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
450 | WARN("Could not close XML document"); | |
451 | ret = -EIO; | |
452 | } | |
453 | ||
454 | if (writer->writer) { | |
455 | xmlFreeTextWriter(writer->writer); | |
456 | } | |
457 | ||
458 | free(writer); | |
459 | end: | |
460 | return ret; | |
461 | } | |
462 | ||
463 | LTTNG_HIDDEN | |
464 | int config_writer_open_element(struct config_writer *writer, | |
465 | const char *element_name) | |
466 | { | |
467 | int ret; | |
468 | xmlChar *encoded_element_name; | |
469 | ||
470 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
471 | ret = -1; | |
472 | goto end; | |
473 | } | |
474 | ||
475 | encoded_element_name = encode_string(element_name); | |
476 | if (!encoded_element_name) { | |
477 | ret = -1; | |
478 | goto end; | |
479 | } | |
480 | ||
481 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
482 | xmlFree(encoded_element_name); | |
483 | end: | |
28676a1d | 484 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
485 | } |
486 | ||
e10b6a1c JG |
487 | LTTNG_HIDDEN |
488 | int config_writer_write_attribute(struct config_writer *writer, | |
489 | const char *name, const char *value) | |
490 | { | |
491 | int ret; | |
492 | xmlChar *encoded_name = NULL; | |
493 | xmlChar *encoded_value = NULL; | |
494 | ||
495 | if (!writer || !writer->writer || !name || !name[0]) { | |
496 | ret = -1; | |
497 | goto end; | |
498 | } | |
499 | ||
500 | encoded_name = encode_string(name); | |
501 | if (!encoded_name) { | |
502 | ret = -1; | |
503 | goto end; | |
504 | } | |
505 | ||
506 | encoded_value = encode_string(value); | |
507 | if (!encoded_value) { | |
508 | ret = -1; | |
509 | goto end; | |
510 | } | |
511 | ||
512 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
513 | encoded_value); | |
514 | end: | |
515 | xmlFree(encoded_name); | |
516 | xmlFree(encoded_value); | |
517 | return ret >= 0 ? 0 : ret; | |
518 | } | |
519 | ||
36f2332b JG |
520 | LTTNG_HIDDEN |
521 | int config_writer_close_element(struct config_writer *writer) | |
522 | { | |
523 | int ret; | |
524 | ||
525 | if (!writer || !writer->writer) { | |
526 | ret = -1; | |
527 | goto end; | |
528 | } | |
529 | ||
530 | ret = xmlTextWriterEndElement(writer->writer); | |
531 | end: | |
28676a1d | 532 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
533 | } |
534 | ||
535 | LTTNG_HIDDEN | |
536 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
537 | const char *element_name, uint64_t value) | |
538 | { | |
539 | int ret; | |
540 | xmlChar *encoded_element_name; | |
541 | ||
542 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
543 | ret = -1; | |
544 | goto end; | |
545 | } | |
546 | ||
547 | encoded_element_name = encode_string(element_name); | |
548 | if (!encoded_element_name) { | |
549 | ret = -1; | |
550 | goto end; | |
551 | } | |
552 | ||
553 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
554 | encoded_element_name, "%" PRIu64, value); | |
555 | xmlFree(encoded_element_name); | |
556 | end: | |
28676a1d | 557 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
558 | } |
559 | ||
560 | LTTNG_HIDDEN | |
561 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
562 | const char *element_name, int64_t value) | |
563 | { | |
564 | int ret; | |
565 | xmlChar *encoded_element_name; | |
566 | ||
567 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
568 | ret = -1; | |
569 | goto end; | |
570 | } | |
571 | ||
572 | encoded_element_name = encode_string(element_name); | |
573 | if (!encoded_element_name) { | |
574 | ret = -1; | |
575 | goto end; | |
576 | } | |
577 | ||
578 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
579 | encoded_element_name, "%" PRIi64, value); | |
580 | xmlFree(encoded_element_name); | |
581 | end: | |
28676a1d | 582 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
583 | } |
584 | ||
585 | LTTNG_HIDDEN | |
586 | int config_writer_write_element_bool(struct config_writer *writer, | |
587 | const char *element_name, int value) | |
588 | { | |
589 | return config_writer_write_element_string(writer, element_name, | |
590 | value ? config_xml_true : config_xml_false); | |
591 | } | |
592 | ||
593 | LTTNG_HIDDEN | |
594 | int config_writer_write_element_string(struct config_writer *writer, | |
595 | const char *element_name, const char *value) | |
596 | { | |
597 | int ret; | |
598 | xmlChar *encoded_element_name = NULL; | |
599 | xmlChar *encoded_value = NULL; | |
600 | ||
601 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
602 | !value) { | |
603 | ret = -1; | |
604 | goto end; | |
605 | } | |
606 | ||
607 | encoded_element_name = encode_string(element_name); | |
608 | if (!encoded_element_name) { | |
609 | ret = -1; | |
610 | goto end; | |
611 | } | |
612 | ||
613 | encoded_value = encode_string(value); | |
614 | if (!encoded_value) { | |
615 | ret = -1; | |
616 | goto end; | |
617 | } | |
618 | ||
619 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 620 | encoded_value); |
36f2332b JG |
621 | end: |
622 | xmlFree(encoded_element_name); | |
623 | xmlFree(encoded_value); | |
28676a1d | 624 | return ret >= 0 ? 0 : ret; |
36f2332b | 625 | } |
dcf266c0 JG |
626 | |
627 | static | |
628 | void xml_error_handler(void *ctx, const char *format, ...) | |
629 | { | |
630 | char *errMsg; | |
631 | va_list args; | |
632 | int ret; | |
633 | ||
634 | va_start(args, format); | |
635 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 636 | va_end(args); |
dcf266c0 JG |
637 | if (ret == -1) { |
638 | ERR("String allocation failed in xml error handler"); | |
639 | return; | |
640 | } | |
dcf266c0 JG |
641 | |
642 | fprintf(stderr, "XML Error: %s", errMsg); | |
643 | free(errMsg); | |
644 | } | |
645 | ||
646 | static | |
647 | void fini_session_config_validation_ctx( | |
648 | struct session_config_validation_ctx *ctx) | |
649 | { | |
650 | if (ctx->parser_ctx) { | |
651 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
652 | } | |
653 | ||
654 | if (ctx->schema) { | |
655 | xmlSchemaFree(ctx->schema); | |
656 | } | |
657 | ||
658 | if (ctx->schema_validation_ctx) { | |
659 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
660 | } | |
661 | ||
662 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
663 | } | |
664 | ||
54e399cb JG |
665 | static |
666 | char *get_session_config_xsd_path() | |
667 | { | |
668 | char *xsd_path; | |
e8fa9fb0 | 669 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
670 | size_t base_path_len; |
671 | size_t max_path_len; | |
672 | ||
673 | if (!base_path) { | |
674 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
675 | } | |
676 | ||
677 | base_path_len = strlen(base_path); | |
678 | max_path_len = base_path_len + | |
679 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
680 | xsd_path = zmalloc(max_path_len); | |
681 | if (!xsd_path) { | |
682 | goto end; | |
683 | } | |
684 | ||
00a7f6f8 | 685 | strcpy(xsd_path, base_path); |
54e399cb JG |
686 | if (xsd_path[base_path_len - 1] != '/') { |
687 | xsd_path[base_path_len++] = '/'; | |
688 | } | |
689 | ||
00a7f6f8 | 690 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
691 | end: |
692 | return xsd_path; | |
693 | } | |
694 | ||
dcf266c0 JG |
695 | static |
696 | int init_session_config_validation_ctx( | |
697 | struct session_config_validation_ctx *ctx) | |
698 | { | |
699 | int ret; | |
54e399cb JG |
700 | char *xsd_path = get_session_config_xsd_path(); |
701 | ||
702 | if (!xsd_path) { | |
703 | ret = -LTTNG_ERR_NOMEM; | |
704 | goto end; | |
705 | } | |
dcf266c0 | 706 | |
54e399cb | 707 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
708 | if (!ctx->parser_ctx) { |
709 | ERR("XSD parser context creation failed"); | |
710 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
711 | goto end; | |
712 | } | |
713 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
714 | xml_error_handler, NULL); | |
715 | ||
716 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
717 | if (!ctx->schema) { | |
718 | ERR("XSD parsing failed"); | |
719 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
720 | goto end; | |
721 | } | |
722 | ||
723 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
724 | if (!ctx->schema_validation_ctx) { | |
725 | ERR("XSD validation context creation failed"); | |
726 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
727 | goto end; | |
728 | } | |
729 | ||
730 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
731 | xml_error_handler, NULL); | |
732 | ret = 0; | |
733 | ||
734 | end: | |
735 | if (ret) { | |
736 | fini_session_config_validation_ctx(ctx); | |
737 | } | |
738 | ||
54e399cb | 739 | free(xsd_path); |
dcf266c0 JG |
740 | return ret; |
741 | } | |
742 | ||
743 | static | |
744 | int parse_uint(xmlChar *str, uint64_t *val) | |
745 | { | |
746 | int ret; | |
747 | char *endptr; | |
748 | ||
749 | if (!str || !val) { | |
750 | ret = -1; | |
751 | goto end; | |
752 | } | |
753 | ||
754 | *val = strtoull((const char *) str, &endptr, 10); | |
755 | if (!endptr || *endptr) { | |
756 | ret = -1; | |
757 | } else { | |
758 | ret = 0; | |
759 | } | |
760 | ||
761 | end: | |
762 | return ret; | |
763 | } | |
764 | ||
765 | static | |
766 | int parse_int(xmlChar *str, int64_t *val) | |
767 | { | |
768 | int ret; | |
769 | char *endptr; | |
770 | ||
771 | if (!str || !val) { | |
772 | ret = -1; | |
773 | goto end; | |
774 | } | |
775 | ||
776 | *val = strtoll((const char *) str, &endptr, 10); | |
777 | if (!endptr || *endptr) { | |
778 | ret = -1; | |
779 | } else { | |
780 | ret = 0; | |
781 | } | |
782 | ||
783 | end: | |
784 | return ret; | |
785 | } | |
786 | ||
787 | static | |
788 | int parse_bool(xmlChar *str, int *val) | |
789 | { | |
790 | int ret = 0; | |
791 | ||
792 | if (!str || !val) { | |
793 | ret = -1; | |
794 | goto end; | |
795 | } | |
796 | ||
797 | if (!strcmp((const char *) str, config_xml_true)) { | |
798 | *val = 1; | |
799 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
800 | *val = 0; | |
801 | } else { | |
802 | WARN("Invalid boolean value encoutered (%s).", | |
803 | (const char *) str); | |
804 | ret = -1; | |
805 | } | |
806 | end: | |
807 | return ret; | |
808 | } | |
809 | ||
810 | static | |
811 | int get_domain_type(xmlChar *domain) | |
812 | { | |
813 | int ret; | |
814 | ||
815 | if (!domain) { | |
816 | goto error; | |
817 | } | |
818 | ||
819 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
820 | ret = LTTNG_DOMAIN_KERNEL; | |
821 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
822 | ret = LTTNG_DOMAIN_UST; | |
823 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
824 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
825 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
826 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
827 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
828 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
829 | } else { |
830 | goto error; | |
831 | } | |
832 | ||
833 | return ret; | |
834 | error: | |
835 | return -1; | |
836 | } | |
837 | ||
838 | static | |
839 | int get_buffer_type(xmlChar *buffer_type) | |
840 | { | |
841 | int ret; | |
842 | ||
843 | if (!buffer_type) { | |
844 | goto error; | |
845 | } | |
846 | ||
847 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
848 | ret = LTTNG_BUFFER_GLOBAL; | |
849 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
850 | ret = LTTNG_BUFFER_PER_UID; | |
851 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
852 | ret = LTTNG_BUFFER_PER_PID; | |
853 | } else { | |
854 | goto error; | |
855 | } | |
856 | ||
857 | return ret; | |
858 | error: | |
859 | return -1; | |
860 | } | |
861 | ||
862 | static | |
863 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
864 | { | |
865 | int ret; | |
866 | ||
867 | if (!overwrite_mode) { | |
868 | goto error; | |
869 | } | |
870 | ||
871 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
872 | ret = 1; | |
873 | } else if (!strcmp((char *) overwrite_mode, | |
874 | config_overwrite_mode_discard)) { | |
875 | ret = 0; | |
876 | } else { | |
877 | goto error; | |
878 | } | |
879 | ||
880 | return ret; | |
881 | error: | |
882 | return -1; | |
883 | } | |
884 | ||
885 | static | |
886 | int get_output_type(xmlChar *output_type) | |
887 | { | |
888 | int ret; | |
889 | ||
890 | if (!output_type) { | |
891 | goto error; | |
892 | } | |
893 | ||
894 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
895 | ret = LTTNG_EVENT_MMAP; | |
896 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
897 | ret = LTTNG_EVENT_SPLICE; | |
898 | } else { | |
899 | goto error; | |
900 | } | |
901 | ||
902 | return ret; | |
903 | error: | |
904 | return -1; | |
905 | } | |
906 | ||
907 | static | |
908 | int get_event_type(xmlChar *event_type) | |
909 | { | |
910 | int ret; | |
911 | ||
912 | if (!event_type) { | |
913 | goto error; | |
914 | } | |
915 | ||
916 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
917 | ret = LTTNG_EVENT_ALL; | |
918 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
919 | ret = LTTNG_EVENT_TRACEPOINT; | |
920 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
921 | ret = LTTNG_EVENT_PROBE; | |
922 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
923 | ret = LTTNG_EVENT_FUNCTION; | |
924 | } else if (!strcmp((char *) event_type, | |
925 | config_event_type_function_entry)) { | |
926 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
927 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
928 | ret = LTTNG_EVENT_NOOP; | |
929 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
930 | ret = LTTNG_EVENT_SYSCALL; | |
931 | } else { | |
932 | goto error; | |
933 | } | |
934 | ||
935 | return ret; | |
936 | error: | |
937 | return -1; | |
938 | } | |
939 | ||
940 | static | |
941 | int get_loglevel_type(xmlChar *loglevel_type) | |
942 | { | |
943 | int ret; | |
944 | ||
945 | if (!loglevel_type) { | |
946 | goto error; | |
947 | } | |
948 | ||
949 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
950 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
951 | } else if (!strcmp((char *) loglevel_type, | |
952 | config_loglevel_type_range)) { | |
953 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
954 | } else if (!strcmp((char *) loglevel_type, | |
955 | config_loglevel_type_single)) { | |
956 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
957 | } else { | |
958 | goto error; | |
959 | } | |
960 | ||
961 | return ret; | |
962 | error: | |
963 | return -1; | |
964 | } | |
965 | ||
966 | /* | |
967 | * Return the context type or -1 on error. | |
968 | */ | |
969 | static | |
970 | int get_context_type(xmlChar *context_type) | |
971 | { | |
972 | int ret; | |
973 | ||
974 | if (!context_type) { | |
975 | goto error; | |
976 | } | |
977 | ||
978 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
979 | ret = LTTNG_EVENT_CONTEXT_PID; | |
980 | } else if (!strcmp((char *) context_type, | |
981 | config_event_context_procname)) { | |
982 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
983 | } else if (!strcmp((char *) context_type, | |
984 | config_event_context_prio)) { | |
985 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
986 | } else if (!strcmp((char *) context_type, | |
987 | config_event_context_nice)) { | |
988 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
989 | } else if (!strcmp((char *) context_type, | |
990 | config_event_context_vpid)) { | |
991 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
992 | } else if (!strcmp((char *) context_type, | |
993 | config_event_context_tid)) { | |
994 | ret = LTTNG_EVENT_CONTEXT_TID; | |
995 | } else if (!strcmp((char *) context_type, | |
996 | config_event_context_vtid)) { | |
997 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
998 | } else if (!strcmp((char *) context_type, | |
999 | config_event_context_ppid)) { | |
1000 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1001 | } else if (!strcmp((char *) context_type, | |
1002 | config_event_context_vppid)) { | |
1003 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1004 | } else if (!strcmp((char *) context_type, | |
1005 | config_event_context_pthread_id)) { | |
1006 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1007 | } else if (!strcmp((char *) context_type, | |
1008 | config_event_context_hostname)) { | |
1009 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1010 | } else if (!strcmp((char *) context_type, | |
1011 | config_event_context_ip)) { | |
1012 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1013 | } else if (!strcmp((char *) context_type, |
1014 | config_event_context_interruptible)) { | |
1015 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1016 | } else if (!strcmp((char *) context_type, | |
1017 | config_event_context_preemptible)) { | |
1018 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1019 | } else if (!strcmp((char *) context_type, | |
1020 | config_event_context_need_reschedule)) { | |
1021 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1022 | } else if (!strcmp((char *) context_type, | |
1023 | config_event_context_migratable)) { | |
1024 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1025 | } else if (!strcmp((char *) context_type, |
1026 | config_event_context_callstack_user)) { | |
1027 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1028 | } else if (!strcmp((char *) context_type, | |
1029 | config_event_context_callstack_kernel)) { | |
1030 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
dcf266c0 JG |
1031 | } else { |
1032 | goto error; | |
1033 | } | |
1034 | ||
1035 | return ret; | |
1036 | error: | |
1037 | return -1; | |
1038 | } | |
1039 | ||
1040 | static | |
1041 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1042 | { | |
1043 | int ret; | |
1044 | xmlNodePtr node; | |
1045 | ||
1046 | for (node = xmlFirstElementChild(domain_node); node; | |
1047 | node = xmlNextElementSibling(node)) { | |
1048 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1049 | /* domain type */ | |
1050 | xmlChar *node_content = xmlNodeGetContent(node); | |
1051 | if (!node_content) { | |
1052 | ret = -LTTNG_ERR_NOMEM; | |
1053 | goto end; | |
1054 | } | |
1055 | ||
1056 | ret = get_domain_type(node_content); | |
1057 | free(node_content); | |
1058 | if (ret < 0) { | |
1059 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1060 | goto end; | |
1061 | } | |
1062 | ||
1063 | domain->type = ret; | |
1064 | } else if (!strcmp((const char *) node->name, | |
1065 | config_element_buffer_type)) { | |
1066 | /* buffer type */ | |
1067 | xmlChar *node_content = xmlNodeGetContent(node); | |
1068 | if (!node_content) { | |
1069 | ret = -LTTNG_ERR_NOMEM; | |
1070 | goto end; | |
1071 | } | |
1072 | ||
1073 | ret = get_buffer_type(node_content); | |
1074 | free(node_content); | |
1075 | if (ret < 0) { | |
1076 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1077 | goto end; | |
1078 | } | |
1079 | ||
1080 | domain->buf_type = ret; | |
1081 | } | |
1082 | } | |
1083 | ret = 0; | |
1084 | end: | |
1085 | return ret; | |
1086 | } | |
1087 | ||
1088 | static | |
1089 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1090 | char **data_uri) | |
1091 | { | |
1092 | xmlNodePtr node; | |
1093 | ||
1094 | for (node = xmlFirstElementChild(net_output_node); node; | |
1095 | node = xmlNextElementSibling(node)) { | |
1096 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1097 | /* control_uri */ | |
1098 | *control_uri = (char *) xmlNodeGetContent(node); | |
1099 | if (!*control_uri) { | |
1100 | break; | |
1101 | } | |
1102 | } else { | |
1103 | /* data_uri */ | |
1104 | *data_uri = (char *) xmlNodeGetContent(node); | |
1105 | if (!*data_uri) { | |
1106 | break; | |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1112 | } | |
1113 | ||
1114 | static | |
1115 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1116 | struct consumer_output *output) | |
1117 | { | |
1118 | int ret; | |
1119 | xmlNodePtr node; | |
1120 | ||
1121 | assert(output); | |
1122 | ||
1123 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1124 | node = xmlNextElementSibling(node)) { | |
1125 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1126 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1127 | ||
1128 | /* enabled */ | |
1129 | if (!enabled_str) { | |
1130 | ret = -LTTNG_ERR_NOMEM; | |
1131 | goto end; | |
1132 | } | |
1133 | ||
1134 | ret = parse_bool(enabled_str, &output->enabled); | |
1135 | free(enabled_str); | |
1136 | if (ret) { | |
1137 | goto end; | |
1138 | } | |
1139 | } else { | |
1140 | xmlNodePtr output_type_node; | |
1141 | ||
1142 | /* destination */ | |
1143 | output_type_node = xmlFirstElementChild(node); | |
1144 | if (!output_type_node) { | |
1145 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1146 | goto end; | |
1147 | } | |
1148 | ||
1149 | if (!strcmp((const char *) output_type_node->name, | |
1150 | config_element_path)) { | |
1151 | /* path */ | |
1152 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1153 | if (!output->path) { | |
1154 | ret = -LTTNG_ERR_NOMEM; | |
1155 | goto end; | |
1156 | } | |
1157 | } else { | |
1158 | /* net_output */ | |
1159 | ret = get_net_output_uris(output_type_node, | |
1160 | &output->control_uri, &output->data_uri); | |
1161 | if (ret) { | |
1162 | goto end; | |
1163 | } | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ret = 0; | |
1168 | ||
1169 | end: | |
1170 | if (ret) { | |
1171 | free(output->path); | |
1172 | free(output->control_uri); | |
1173 | free(output->data_uri); | |
1174 | memset(output, 0, sizeof(struct consumer_output)); | |
1175 | } | |
1176 | return ret; | |
1177 | } | |
1178 | ||
1179 | static | |
95681498 JG |
1180 | int create_session_net_output(const char *name, const char *control_uri, |
1181 | const char *data_uri) | |
dcf266c0 JG |
1182 | { |
1183 | int ret; | |
1184 | struct lttng_handle *handle; | |
1185 | const char *uri = NULL; | |
1186 | ||
1187 | assert(name); | |
dcf266c0 | 1188 | |
95681498 | 1189 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1190 | if (!handle) { |
1191 | ret = -LTTNG_ERR_NOMEM; | |
1192 | goto end; | |
1193 | } | |
1194 | ||
1195 | if (!control_uri || !data_uri) { | |
1196 | uri = control_uri ? control_uri : data_uri; | |
1197 | control_uri = uri; | |
1198 | data_uri = uri; | |
1199 | } | |
1200 | ||
1201 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1202 | lttng_destroy_handle(handle); | |
1203 | end: | |
1204 | return ret; | |
1205 | } | |
1206 | ||
1207 | static | |
1b08cbce JR |
1208 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1209 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1210 | { |
1211 | int ret; | |
1212 | xmlNodePtr node = NULL; | |
1213 | xmlNodePtr snapshot_output_list_node; | |
1214 | xmlNodePtr snapshot_output_node; | |
1215 | ||
1216 | assert(session_name); | |
1217 | ||
1218 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1219 | if (ret) { | |
1220 | goto end; | |
1221 | } | |
1222 | ||
1223 | if (!output_node) { | |
1224 | goto end; | |
1225 | } | |
1226 | ||
1227 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1228 | ||
1229 | /* Parse and create snapshot outputs */ | |
1230 | ||
1231 | for (snapshot_output_node = | |
1232 | xmlFirstElementChild(snapshot_output_list_node); | |
1233 | snapshot_output_node; snapshot_output_node = | |
1234 | xmlNextElementSibling(snapshot_output_node)) { | |
1235 | char *name = NULL; | |
1236 | uint64_t max_size = UINT64_MAX; | |
1237 | struct consumer_output output = { 0 }; | |
1238 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1239 | const char *control_uri = NULL; |
1240 | const char *data_uri = NULL; | |
1241 | const char *path = NULL; | |
dcf266c0 JG |
1242 | |
1243 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1244 | node = xmlNextElementSibling(node)) { | |
1245 | if (!strcmp((const char *) node->name, | |
1246 | config_element_name)) { | |
1247 | /* name */ | |
1248 | name = (char *) xmlNodeGetContent(node); | |
1249 | if (!name) { | |
1250 | ret = -LTTNG_ERR_NOMEM; | |
1251 | goto error_snapshot_output; | |
1252 | } | |
1253 | } else if (!strcmp((const char *) node->name, | |
1254 | config_element_max_size)) { | |
1255 | xmlChar *content = xmlNodeGetContent(node); | |
1256 | ||
1257 | /* max_size */ | |
1258 | if (!content) { | |
1259 | ret = -LTTNG_ERR_NOMEM; | |
1260 | goto error_snapshot_output; | |
1261 | } | |
1262 | ret = parse_uint(content, &max_size); | |
1263 | free(content); | |
1264 | if (ret) { | |
1265 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1266 | goto error_snapshot_output; | |
1267 | } | |
1268 | } else { | |
1269 | /* consumer_output */ | |
1270 | ret = process_consumer_output(node, &output); | |
1271 | if (ret) { | |
1272 | goto error_snapshot_output; | |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | ||
21a3f144 JR |
1277 | control_uri = output.control_uri; |
1278 | data_uri = output.data_uri; | |
1279 | path = output.path; | |
1280 | ||
1b08cbce JR |
1281 | if (overrides) { |
1282 | if (overrides->path_url) { | |
1b08cbce | 1283 | path = overrides->path_url; |
21a3f144 JR |
1284 | /* Control/data_uri are null */ |
1285 | control_uri = NULL; | |
1286 | data_uri = NULL; | |
1b08cbce JR |
1287 | } else { |
1288 | if (overrides->ctrl_url) { | |
1b08cbce | 1289 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1290 | /* path is null */ |
1291 | path = NULL; | |
1b08cbce JR |
1292 | } |
1293 | if (overrides->data_url) { | |
1b08cbce | 1294 | data_uri = overrides->data_url; |
21a3f144 JR |
1295 | /* path is null */ |
1296 | path = NULL; | |
1b08cbce JR |
1297 | } |
1298 | } | |
1b08cbce JR |
1299 | } |
1300 | ||
dcf266c0 JG |
1301 | snapshot_output = lttng_snapshot_output_create(); |
1302 | if (!snapshot_output) { | |
1303 | ret = -LTTNG_ERR_NOMEM; | |
1304 | goto error_snapshot_output; | |
1305 | } | |
1306 | ||
1307 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1308 | if (ret) { | |
1309 | goto error_snapshot_output; | |
1310 | } | |
1311 | ||
1312 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1313 | if (ret) { | |
1314 | goto error_snapshot_output; | |
1315 | } | |
1316 | ||
1b08cbce JR |
1317 | if (path) { |
1318 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1319 | snapshot_output); |
1320 | if (ret) { | |
1321 | goto error_snapshot_output; | |
1322 | } | |
1323 | } else { | |
1b08cbce JR |
1324 | if (control_uri) { |
1325 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1326 | snapshot_output); |
1327 | if (ret) { | |
1328 | goto error_snapshot_output; | |
1329 | } | |
1330 | } | |
1331 | ||
1b08cbce JR |
1332 | if (data_uri) { |
1333 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1334 | snapshot_output); |
1335 | if (ret) { | |
1336 | goto error_snapshot_output; | |
1337 | } | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1342 | error_snapshot_output: | |
1343 | free(name); | |
1344 | free(output.path); | |
1345 | free(output.control_uri); | |
1346 | free(output.data_uri); | |
1347 | lttng_snapshot_output_destroy(snapshot_output); | |
1348 | if (ret) { | |
1349 | goto end; | |
1350 | } | |
1351 | } | |
1352 | end: | |
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | static | |
1357 | int create_session(const char *name, | |
dcf266c0 | 1358 | xmlNodePtr output_node, |
1b08cbce JR |
1359 | uint64_t live_timer_interval, |
1360 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1361 | { |
1362 | int ret; | |
1363 | struct consumer_output output = { 0 }; | |
1364 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1365 | const char *control_uri = NULL; |
1366 | const char *data_uri = NULL; | |
1367 | const char *path = NULL; | |
dcf266c0 JG |
1368 | |
1369 | assert(name); | |
dcf266c0 JG |
1370 | |
1371 | if (output_node) { | |
1372 | consumer_output_node = xmlFirstElementChild(output_node); | |
1373 | if (!consumer_output_node) { | |
1374 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | if (strcmp((const char *) consumer_output_node->name, | |
1379 | config_element_consumer_output)) { | |
1380 | WARN("Invalid output type, expected %s node", | |
1381 | config_element_consumer_output); | |
1382 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1383 | goto end; | |
1384 | } | |
1385 | ||
1386 | ret = process_consumer_output(consumer_output_node, &output); | |
1387 | if (ret) { | |
1388 | goto end; | |
1389 | } | |
1390 | } | |
1391 | ||
21a3f144 JR |
1392 | control_uri = output.control_uri; |
1393 | data_uri = output.data_uri; | |
1394 | path = output.path; | |
1395 | ||
1b08cbce JR |
1396 | /* Check for override and apply them */ |
1397 | if (overrides) { | |
1398 | if (overrides->path_url) { | |
1b08cbce | 1399 | path = overrides->path_url; |
21a3f144 JR |
1400 | /* control/data_uri are null */; |
1401 | control_uri = NULL; | |
1402 | data_uri = NULL; | |
1b08cbce JR |
1403 | } else { |
1404 | if (overrides->ctrl_url) { | |
1b08cbce | 1405 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1406 | /* path is null */ |
1407 | path = NULL; | |
1b08cbce JR |
1408 | } |
1409 | if (overrides->data_url) { | |
1b08cbce | 1410 | data_uri = overrides->data_url; |
21a3f144 JR |
1411 | /* path is null */ |
1412 | path = NULL; | |
1b08cbce JR |
1413 | } |
1414 | } | |
1b08cbce JR |
1415 | } |
1416 | ||
21a3f144 | 1417 | |
1b08cbce | 1418 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1419 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1420 | goto end; | |
1421 | } | |
1422 | ||
1b08cbce | 1423 | if (control_uri || data_uri) { |
dcf266c0 JG |
1424 | /* network destination */ |
1425 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1426 | /* |
1427 | * URLs are provided for sure since the test above make sure that | |
1428 | * with a live timer the data and control URIs are provided. So, | |
1429 | * NULL is passed here and will be set right after. | |
1430 | */ | |
1431 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1432 | } else { |
1433 | ret = lttng_create_session(name, NULL); | |
1434 | } | |
1435 | if (ret) { | |
1436 | goto end; | |
1437 | } | |
1438 | ||
1b08cbce | 1439 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1440 | if (ret) { |
1441 | goto end; | |
dcf266c0 | 1442 | } |
95681498 | 1443 | |
dcf266c0 JG |
1444 | } else { |
1445 | /* either local output or no output */ | |
1b08cbce | 1446 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1447 | if (ret) { |
1448 | goto end; | |
1449 | } | |
1450 | } | |
1451 | end: | |
1452 | free(output.path); | |
1453 | free(output.control_uri); | |
1454 | free(output.data_uri); | |
1455 | return ret; | |
1456 | } | |
1457 | static | |
1458 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1459 | struct lttng_event_probe_attr *attr) | |
1460 | { | |
1461 | int ret; | |
1462 | ||
1463 | assert(probe_attribute_node); | |
1464 | assert(attr); | |
1465 | ||
1466 | if (!strcmp((const char *) probe_attribute_node->name, | |
1467 | config_element_address)) { | |
1468 | xmlChar *content; | |
1469 | uint64_t addr = 0; | |
1470 | ||
1471 | /* addr */ | |
1472 | content = xmlNodeGetContent(probe_attribute_node); | |
1473 | if (!content) { | |
1474 | ret = -LTTNG_ERR_NOMEM; | |
1475 | goto end; | |
1476 | } | |
1477 | ||
1478 | ret = parse_uint(content, &addr); | |
1479 | free(content); | |
1480 | if (ret) { | |
1481 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1482 | goto end; | |
1483 | } | |
1484 | ||
1485 | attr->addr = addr; | |
1486 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1487 | config_element_offset)) { | |
1488 | xmlChar *content; | |
1489 | uint64_t offset = 0; | |
1490 | ||
1491 | /* offset */ | |
1492 | content = xmlNodeGetContent(probe_attribute_node); | |
1493 | if (!content) { | |
1494 | ret = -LTTNG_ERR_NOMEM; | |
1495 | goto end; | |
1496 | } | |
1497 | ||
1498 | ret = parse_uint(content, &offset); | |
1499 | free(content); | |
1500 | if (ret) { | |
1501 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1502 | goto end; | |
1503 | } | |
1504 | ||
1505 | attr->offset = offset; | |
1506 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1507 | config_element_symbol_name)) { | |
1508 | xmlChar *content; | |
dcf266c0 JG |
1509 | |
1510 | /* symbol_name */ | |
1511 | content = xmlNodeGetContent(probe_attribute_node); | |
1512 | if (!content) { | |
1513 | ret = -LTTNG_ERR_NOMEM; | |
1514 | goto end; | |
1515 | } | |
1516 | ||
d2e67842 JG |
1517 | ret = lttng_strncpy(attr->symbol_name, |
1518 | (const char *) content, | |
1519 | LTTNG_SYMBOL_NAME_LEN); | |
1520 | if (ret == -1) { | |
1521 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1522 | (const char *) content, | |
1523 | strlen((const char *) content), | |
1524 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1525 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1526 | free(content); | |
1527 | goto end; | |
1528 | } | |
dcf266c0 JG |
1529 | free(content); |
1530 | } | |
1531 | ret = 0; | |
1532 | end: | |
1533 | return ret; | |
1534 | } | |
1535 | ||
1536 | static | |
1537 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1538 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1539 | { |
d7b645e2 | 1540 | int ret = 0, i; |
dcf266c0 JG |
1541 | xmlNodePtr node; |
1542 | struct lttng_event event; | |
1543 | char **exclusions = NULL; | |
1544 | unsigned long exclusion_count = 0; | |
1545 | char *filter_expression = NULL; | |
1546 | ||
1547 | assert(event_node); | |
1548 | assert(handle); | |
1549 | assert(channel_name); | |
1550 | ||
1551 | memset(&event, 0, sizeof(event)); | |
1552 | ||
f40eba3d JG |
1553 | /* Initialize default log level which varies by domain */ |
1554 | switch (handle->domain.type) | |
1555 | { | |
1556 | case LTTNG_DOMAIN_JUL: | |
1557 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1558 | break; | |
1559 | case LTTNG_DOMAIN_LOG4J: | |
1560 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1561 | break; | |
1562 | case LTTNG_DOMAIN_PYTHON: | |
1563 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1564 | break; | |
1565 | case LTTNG_DOMAIN_UST: | |
1566 | case LTTNG_DOMAIN_KERNEL: | |
1567 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1568 | break; | |
1569 | default: | |
1570 | assert(0); | |
1571 | } | |
1572 | ||
dcf266c0 JG |
1573 | for (node = xmlFirstElementChild(event_node); node; |
1574 | node = xmlNextElementSibling(node)) { | |
1575 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1576 | xmlChar *content; | |
dcf266c0 JG |
1577 | |
1578 | /* name */ | |
1579 | content = xmlNodeGetContent(node); | |
1580 | if (!content) { | |
1581 | ret = -LTTNG_ERR_NOMEM; | |
1582 | goto end; | |
1583 | } | |
1584 | ||
d2e67842 JG |
1585 | ret = lttng_strncpy(event.name, |
1586 | (const char *) content, | |
1587 | LTTNG_SYMBOL_NAME_LEN); | |
1588 | if (ret == -1) { | |
1589 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1590 | (const char *) content, | |
1591 | strlen((const char *) content), | |
1592 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1593 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1594 | free(content); | |
1595 | goto end; | |
1596 | } | |
dcf266c0 JG |
1597 | free(content); |
1598 | } else if (!strcmp((const char *) node->name, | |
1599 | config_element_enabled)) { | |
1600 | xmlChar *content = xmlNodeGetContent(node); | |
1601 | ||
1602 | /* enabled */ | |
1603 | if (!content) { | |
1604 | ret = -LTTNG_ERR_NOMEM; | |
1605 | goto end; | |
1606 | } | |
1607 | ||
1608 | ret = parse_bool(content, &event.enabled); | |
1609 | free(content); | |
1610 | if (ret) { | |
1611 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1612 | goto end; | |
1613 | } | |
1614 | } else if (!strcmp((const char *) node->name, | |
1615 | config_element_type)) { | |
1616 | xmlChar *content = xmlNodeGetContent(node); | |
1617 | ||
1618 | /* type */ | |
1619 | if (!content) { | |
1620 | ret = -LTTNG_ERR_NOMEM; | |
1621 | goto end; | |
1622 | } | |
1623 | ||
1624 | ret = get_event_type(content); | |
1625 | free(content); | |
1626 | if (ret < 0) { | |
1627 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1628 | goto end; | |
1629 | } | |
1630 | ||
1631 | event.type = ret; | |
1632 | } else if (!strcmp((const char *) node->name, | |
1633 | config_element_loglevel_type)) { | |
1634 | xmlChar *content = xmlNodeGetContent(node); | |
1635 | ||
1636 | /* loglevel_type */ | |
1637 | if (!content) { | |
1638 | ret = -LTTNG_ERR_NOMEM; | |
1639 | goto end; | |
1640 | } | |
1641 | ||
1642 | ret = get_loglevel_type(content); | |
1643 | free(content); | |
1644 | if (ret < 0) { | |
1645 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1646 | goto end; | |
1647 | } | |
1648 | ||
1649 | event.loglevel_type = ret; | |
1650 | } else if (!strcmp((const char *) node->name, | |
1651 | config_element_loglevel)) { | |
1652 | xmlChar *content; | |
1653 | int64_t loglevel = 0; | |
1654 | ||
1655 | /* loglevel */ | |
1656 | content = xmlNodeGetContent(node); | |
1657 | if (!content) { | |
1658 | ret = -LTTNG_ERR_NOMEM; | |
1659 | goto end; | |
1660 | } | |
1661 | ||
1662 | ret = parse_int(content, &loglevel); | |
1663 | free(content); | |
1664 | if (ret) { | |
1665 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1666 | goto end; | |
1667 | } | |
1668 | ||
1669 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1670 | WARN("loglevel out of range."); | |
1671 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1672 | goto end; | |
1673 | } | |
1674 | ||
1675 | event.loglevel = loglevel; | |
1676 | } else if (!strcmp((const char *) node->name, | |
1677 | config_element_filter)) { | |
1678 | xmlChar *content = | |
1679 | xmlNodeGetContent(node); | |
1680 | ||
1681 | /* filter */ | |
1682 | if (!content) { | |
1683 | ret = -LTTNG_ERR_NOMEM; | |
1684 | goto end; | |
1685 | } | |
1686 | ||
02d8ac3d | 1687 | free(filter_expression); |
dcf266c0 JG |
1688 | filter_expression = strdup((char *) content); |
1689 | free(content); | |
1690 | if (!filter_expression) { | |
1691 | ret = -LTTNG_ERR_NOMEM; | |
1692 | goto end; | |
1693 | } | |
1694 | } else if (!strcmp((const char *) node->name, | |
1695 | config_element_exclusions)) { | |
1696 | xmlNodePtr exclusion_node; | |
1697 | int exclusion_index = 0; | |
1698 | ||
1699 | /* exclusions */ | |
1700 | if (exclusions) { | |
1701 | /* | |
1702 | * Exclusions has already been initialized, | |
1703 | * invalid file. | |
1704 | */ | |
1705 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1706 | goto end; | |
1707 | } | |
1708 | ||
1709 | exclusion_count = xmlChildElementCount(node); | |
1710 | if (!exclusion_count) { | |
1711 | continue; | |
1712 | } | |
1713 | ||
1714 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1715 | if (!exclusions) { | |
1716 | exclusion_count = 0; | |
1717 | ret = -LTTNG_ERR_NOMEM; | |
1718 | goto end; | |
1719 | } | |
1720 | ||
1721 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1722 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1723 | xmlChar *content = | |
1724 | xmlNodeGetContent(exclusion_node); | |
1725 | ||
1726 | if (!content) { | |
1727 | ret = -LTTNG_ERR_NOMEM; | |
1728 | goto end; | |
1729 | } | |
1730 | ||
1731 | exclusions[exclusion_index] = strdup((const char *) content); | |
1732 | free(content); | |
1733 | if (!exclusions[exclusion_index]) { | |
1734 | ret = -LTTNG_ERR_NOMEM; | |
1735 | goto end; | |
1736 | } | |
1737 | exclusion_index++; | |
1738 | } | |
1739 | ||
1740 | event.exclusion = 1; | |
1741 | } else if (!strcmp((const char *) node->name, | |
1742 | config_element_attributes)) { | |
1743 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1744 | ||
1745 | /* attributes */ | |
1746 | if (!attribute_node) { | |
1747 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1748 | goto end; | |
1749 | } | |
1750 | ||
1751 | if (!strcmp((const char *) node->name, | |
1752 | config_element_probe_attributes)) { | |
1753 | xmlNodePtr probe_attribute_node; | |
1754 | ||
1755 | /* probe_attributes */ | |
1756 | for (probe_attribute_node = | |
1757 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1758 | probe_attribute_node = xmlNextElementSibling( | |
1759 | probe_attribute_node)) { | |
1760 | ||
1761 | ret = process_probe_attribute_node(probe_attribute_node, | |
1762 | &event.attr.probe); | |
1763 | if (ret) { | |
1764 | goto end; | |
1765 | } | |
1766 | } | |
1767 | } else { | |
1768 | size_t sym_len; | |
1769 | xmlChar *content; | |
1770 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1771 | ||
1772 | /* function_attributes */ | |
1773 | content = xmlNodeGetContent(symbol_node); | |
1774 | if (!content) { | |
1775 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1776 | goto end; | |
1777 | } | |
1778 | ||
1779 | sym_len = strlen((char *) content); | |
1780 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1781 | WARN("Function name too long."); | |
1782 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1783 | free(content); | |
1784 | goto end; | |
1785 | } | |
1786 | ||
d2e67842 JG |
1787 | ret = lttng_strncpy( |
1788 | event.attr.ftrace.symbol_name, | |
1789 | (char *) content, sym_len); | |
1790 | if (ret == -1) { | |
1791 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1792 | free(content); | |
1793 | goto end; | |
1794 | } | |
dcf266c0 JG |
1795 | free(content); |
1796 | } | |
1797 | } | |
1798 | } | |
1799 | ||
d7b645e2 JR |
1800 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1801 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1802 | filter_expression, exclusion_count, exclusions); | |
1803 | if (ret < 0) { | |
1804 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1805 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1806 | goto end; | |
1807 | } | |
065321e9 | 1808 | } |
d2e67842 | 1809 | ret = 0; |
dcf266c0 JG |
1810 | end: |
1811 | for (i = 0; i < exclusion_count; i++) { | |
1812 | free(exclusions[i]); | |
1813 | } | |
1814 | ||
1815 | free(exclusions); | |
1816 | free(filter_expression); | |
1817 | return ret; | |
1818 | } | |
1819 | ||
1820 | static | |
1821 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1822 | const char *channel_name) | |
1823 | { | |
1824 | int ret = 0; | |
d7b645e2 | 1825 | struct lttng_event event; |
dcf266c0 JG |
1826 | xmlNodePtr node; |
1827 | ||
1828 | assert(events_node); | |
1829 | assert(handle); | |
1830 | assert(channel_name); | |
1831 | ||
1832 | for (node = xmlFirstElementChild(events_node); node; | |
1833 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 1834 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1835 | if (ret) { |
1836 | goto end; | |
1837 | } | |
1838 | } | |
d7b645e2 JR |
1839 | |
1840 | /* | |
1841 | * Disable all events to enable only the necessary events. | |
1842 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1843 | * force this approach. | |
1844 | */ | |
1845 | memset(&event, 0, sizeof(event)); | |
1846 | event.loglevel = -1; | |
1847 | event.type = LTTNG_EVENT_ALL; | |
1848 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1849 | if (ret) { | |
1850 | goto end; | |
1851 | } | |
1852 | ||
1853 | for (node = xmlFirstElementChild(events_node); node; | |
1854 | node = xmlNextElementSibling(node)) { | |
1855 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1856 | if (ret) { | |
1857 | goto end; | |
1858 | } | |
1859 | } | |
1860 | ||
dcf266c0 JG |
1861 | end: |
1862 | return ret; | |
1863 | } | |
1864 | ||
1865 | static | |
1866 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1867 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1868 | xmlNodePtr *events_node) | |
1869 | { | |
1870 | int ret; | |
1871 | ||
1872 | assert(attr_node); | |
1873 | assert(channel); | |
1874 | assert(contexts_node); | |
1875 | assert(events_node); | |
1876 | ||
1877 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1878 | xmlChar *content; | |
dcf266c0 JG |
1879 | |
1880 | /* name */ | |
1881 | content = xmlNodeGetContent(attr_node); | |
1882 | if (!content) { | |
1883 | ret = -LTTNG_ERR_NOMEM; | |
1884 | goto end; | |
1885 | } | |
1886 | ||
d2e67842 JG |
1887 | ret = lttng_strncpy(channel->name, |
1888 | (const char *) content, | |
1889 | LTTNG_SYMBOL_NAME_LEN); | |
1890 | if (ret == -1) { | |
1891 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1892 | (const char *) content, | |
1893 | strlen((const char *) content), | |
1894 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1895 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1896 | free(content); | |
1897 | goto end; | |
1898 | } | |
dcf266c0 JG |
1899 | free(content); |
1900 | } else if (!strcmp((const char *) attr_node->name, | |
1901 | config_element_enabled)) { | |
1902 | xmlChar *content; | |
1903 | int enabled; | |
1904 | ||
1905 | /* enabled */ | |
1906 | content = xmlNodeGetContent(attr_node); | |
1907 | if (!content) { | |
1908 | ret = -LTTNG_ERR_NOMEM; | |
1909 | goto end; | |
1910 | } | |
1911 | ||
1912 | ret = parse_bool(content, &enabled); | |
1913 | free(content); | |
1914 | if (ret) { | |
1915 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1916 | goto end; | |
1917 | } | |
1918 | ||
1919 | channel->enabled = enabled; | |
1920 | } else if (!strcmp((const char *) attr_node->name, | |
1921 | config_element_overwrite_mode)) { | |
1922 | xmlChar *content; | |
1923 | ||
1924 | /* overwrite_mode */ | |
1925 | content = xmlNodeGetContent(attr_node); | |
1926 | if (!content) { | |
1927 | ret = -LTTNG_ERR_NOMEM; | |
1928 | goto end; | |
1929 | } | |
1930 | ||
1931 | ret = get_overwrite_mode(content); | |
1932 | free(content); | |
1933 | if (ret < 0) { | |
1934 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1935 | goto end; | |
1936 | } | |
1937 | ||
1938 | channel->attr.overwrite = ret; | |
1939 | } else if (!strcmp((const char *) attr_node->name, | |
1940 | config_element_subbuf_size)) { | |
1941 | xmlChar *content; | |
1942 | ||
1943 | /* subbuffer_size */ | |
1944 | content = xmlNodeGetContent(attr_node); | |
1945 | if (!content) { | |
1946 | ret = -LTTNG_ERR_NOMEM; | |
1947 | goto end; | |
1948 | } | |
1949 | ||
1950 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1951 | free(content); | |
1952 | if (ret) { | |
1953 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1954 | goto end; | |
1955 | } | |
1956 | } else if (!strcmp((const char *) attr_node->name, | |
1957 | config_element_num_subbuf)) { | |
1958 | xmlChar *content; | |
1959 | ||
1960 | /* subbuffer_count */ | |
1961 | content = xmlNodeGetContent(attr_node); | |
1962 | if (!content) { | |
1963 | ret = -LTTNG_ERR_NOMEM; | |
1964 | goto end; | |
1965 | } | |
1966 | ||
1967 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1968 | free(content); | |
1969 | if (ret) { | |
1970 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1971 | goto end; | |
1972 | } | |
1973 | } else if (!strcmp((const char *) attr_node->name, | |
1974 | config_element_switch_timer_interval)) { | |
1975 | xmlChar *content; | |
1976 | uint64_t switch_timer_interval = 0; | |
1977 | ||
1978 | /* switch_timer_interval */ | |
1979 | content = xmlNodeGetContent(attr_node); | |
1980 | if (!content) { | |
1981 | ret = -LTTNG_ERR_NOMEM; | |
1982 | goto end; | |
1983 | } | |
1984 | ||
1985 | ret = parse_uint(content, &switch_timer_interval); | |
1986 | free(content); | |
1987 | if (ret) { | |
1988 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1989 | goto end; | |
1990 | } | |
1991 | ||
1992 | if (switch_timer_interval > UINT_MAX) { | |
1993 | WARN("switch_timer_interval out of range."); | |
1994 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1995 | goto end; | |
1996 | } | |
1997 | ||
1998 | channel->attr.switch_timer_interval = | |
1999 | switch_timer_interval; | |
2000 | } else if (!strcmp((const char *) attr_node->name, | |
2001 | config_element_read_timer_interval)) { | |
2002 | xmlChar *content; | |
2003 | uint64_t read_timer_interval = 0; | |
2004 | ||
2005 | /* read_timer_interval */ | |
2006 | content = xmlNodeGetContent(attr_node); | |
2007 | if (!content) { | |
2008 | ret = -LTTNG_ERR_NOMEM; | |
2009 | goto end; | |
2010 | } | |
2011 | ||
2012 | ret = parse_uint(content, &read_timer_interval); | |
2013 | free(content); | |
2014 | if (ret) { | |
2015 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2016 | goto end; | |
2017 | } | |
2018 | ||
2019 | if (read_timer_interval > UINT_MAX) { | |
2020 | WARN("read_timer_interval out of range."); | |
2021 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2022 | goto end; | |
2023 | } | |
2024 | ||
2025 | channel->attr.read_timer_interval = | |
2026 | read_timer_interval; | |
2027 | } else if (!strcmp((const char *) attr_node->name, | |
2028 | config_element_output_type)) { | |
2029 | xmlChar *content; | |
2030 | ||
2031 | /* output_type */ | |
2032 | content = xmlNodeGetContent(attr_node); | |
2033 | if (!content) { | |
2034 | ret = -LTTNG_ERR_NOMEM; | |
2035 | goto end; | |
2036 | } | |
2037 | ||
2038 | ret = get_output_type(content); | |
2039 | free(content); | |
2040 | if (ret < 0) { | |
2041 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2042 | goto end; | |
2043 | } | |
2044 | ||
2045 | channel->attr.output = ret; | |
2046 | } else if (!strcmp((const char *) attr_node->name, | |
2047 | config_element_tracefile_size)) { | |
2048 | xmlChar *content; | |
2049 | ||
2050 | /* tracefile_size */ | |
2051 | content = xmlNodeGetContent(attr_node); | |
2052 | if (!content) { | |
2053 | ret = -LTTNG_ERR_NOMEM; | |
2054 | goto end; | |
2055 | } | |
2056 | ||
2057 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2058 | free(content); | |
2059 | if (ret) { | |
2060 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2061 | goto end; | |
2062 | } | |
2063 | } else if (!strcmp((const char *) attr_node->name, | |
2064 | config_element_tracefile_count)) { | |
2065 | xmlChar *content; | |
2066 | ||
2067 | /* tracefile_count */ | |
2068 | content = xmlNodeGetContent(attr_node); | |
2069 | if (!content) { | |
2070 | ret = -LTTNG_ERR_NOMEM; | |
2071 | goto end; | |
2072 | } | |
2073 | ||
2074 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2075 | free(content); | |
2076 | if (ret) { | |
2077 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2078 | goto end; | |
2079 | } | |
2080 | } else if (!strcmp((const char *) attr_node->name, | |
2081 | config_element_live_timer_interval)) { | |
2082 | xmlChar *content; | |
2083 | uint64_t live_timer_interval = 0; | |
2084 | ||
2085 | /* live_timer_interval */ | |
2086 | content = xmlNodeGetContent(attr_node); | |
2087 | if (!content) { | |
2088 | ret = -LTTNG_ERR_NOMEM; | |
2089 | goto end; | |
2090 | } | |
2091 | ||
2092 | ret = parse_uint(content, &live_timer_interval); | |
2093 | free(content); | |
2094 | if (ret) { | |
2095 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2096 | goto end; | |
2097 | } | |
2098 | ||
2099 | if (live_timer_interval > UINT_MAX) { | |
2100 | WARN("live_timer_interval out of range."); | |
2101 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2102 | goto end; | |
2103 | } | |
2104 | ||
2105 | channel->attr.live_timer_interval = | |
2106 | live_timer_interval; | |
4fc2b126 JR |
2107 | } else if (!strcmp((const char *) attr_node->name, |
2108 | config_element_monitor_timer_interval)) { | |
2109 | xmlChar *content; | |
2110 | uint64_t monitor_timer_interval = 0; | |
2111 | ||
2112 | /* monitor_timer_interval */ | |
2113 | content = xmlNodeGetContent(attr_node); | |
2114 | if (!content) { | |
2115 | ret = -LTTNG_ERR_NOMEM; | |
2116 | goto end; | |
2117 | } | |
2118 | ||
2119 | ret = parse_uint(content, &monitor_timer_interval); | |
2120 | free(content); | |
2121 | if (ret) { | |
2122 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2123 | goto end; | |
2124 | } | |
2125 | ||
2126 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2127 | monitor_timer_interval); | |
2128 | if (ret) { | |
2129 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2130 | goto end; | |
2131 | } | |
275472aa JR |
2132 | } else if (!strcmp((const char *) attr_node->name, |
2133 | config_element_blocking_timeout)) { | |
2134 | xmlChar *content; | |
2135 | int64_t blocking_timeout = 0; | |
2136 | ||
2137 | /* blocking_timeout */ | |
2138 | content = xmlNodeGetContent(attr_node); | |
2139 | if (!content) { | |
2140 | ret = -LTTNG_ERR_NOMEM; | |
2141 | goto end; | |
2142 | } | |
2143 | ||
2144 | ret = parse_int(content, &blocking_timeout); | |
2145 | free(content); | |
2146 | if (ret) { | |
2147 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2148 | goto end; | |
2149 | } | |
2150 | ||
2151 | ret = lttng_channel_set_blocking_timeout(channel, | |
2152 | blocking_timeout); | |
2153 | if (ret) { | |
2154 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2155 | goto end; | |
2156 | } | |
dcf266c0 JG |
2157 | } else if (!strcmp((const char *) attr_node->name, |
2158 | config_element_events)) { | |
2159 | /* events */ | |
2160 | *events_node = attr_node; | |
2161 | } else { | |
2162 | /* contexts */ | |
2163 | *contexts_node = attr_node; | |
2164 | } | |
2165 | ret = 0; | |
2166 | end: | |
2167 | return ret; | |
2168 | } | |
2169 | ||
2170 | static | |
2171 | int process_context_node(xmlNodePtr context_node, | |
2172 | struct lttng_handle *handle, const char *channel_name) | |
2173 | { | |
2174 | int ret; | |
2175 | struct lttng_event_context context; | |
2176 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2177 | ||
2178 | assert(handle); | |
2179 | assert(channel_name); | |
2180 | ||
2181 | if (!context_child_node) { | |
2182 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2183 | goto end; | |
2184 | } | |
2185 | ||
2186 | memset(&context, 0, sizeof(context)); | |
2187 | ||
2188 | if (!strcmp((const char *) context_child_node->name, | |
2189 | config_element_type)) { | |
2190 | /* type */ | |
2191 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2192 | |
dcf266c0 JG |
2193 | if (!content) { |
2194 | ret = -LTTNG_ERR_NOMEM; | |
2195 | goto end; | |
2196 | } | |
2197 | ||
2198 | ret = get_context_type(content); | |
2199 | free(content); | |
2200 | if (ret < 0) { | |
2201 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2202 | goto end; | |
2203 | } | |
2204 | ||
2205 | context.ctx = ret; | |
045fc617 JG |
2206 | } else if (!strcmp((const char *) context_child_node->name, |
2207 | config_element_context_perf)) { | |
2208 | /* perf */ | |
dcf266c0 JG |
2209 | xmlNodePtr perf_attr_node; |
2210 | ||
14ce5bd8 JG |
2211 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2212 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2213 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2214 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2215 | perf_attr_node; perf_attr_node = | |
2216 | xmlNextElementSibling(perf_attr_node)) { | |
2217 | if (!strcmp((const char *) perf_attr_node->name, | |
2218 | config_element_type)) { | |
2219 | xmlChar *content; | |
2220 | uint64_t type = 0; | |
2221 | ||
2222 | /* type */ | |
2223 | content = xmlNodeGetContent(perf_attr_node); | |
2224 | if (!content) { | |
2225 | ret = -LTTNG_ERR_NOMEM; | |
2226 | goto end; | |
2227 | } | |
2228 | ||
2229 | ret = parse_uint(content, &type); | |
2230 | free(content); | |
2231 | if (ret) { | |
2232 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2233 | goto end; | |
2234 | } | |
2235 | ||
2236 | if (type > UINT32_MAX) { | |
2237 | WARN("perf context type out of range."); | |
2238 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2239 | goto end; | |
2240 | } | |
2241 | ||
2242 | context.u.perf_counter.type = type; | |
2243 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2244 | config_element_config)) { | |
2245 | xmlChar *content; | |
2246 | uint64_t config = 0; | |
2247 | ||
2248 | /* config */ | |
2249 | content = xmlNodeGetContent(perf_attr_node); | |
2250 | if (!content) { | |
2251 | ret = -LTTNG_ERR_NOMEM; | |
2252 | goto end; | |
2253 | } | |
2254 | ||
2255 | ret = parse_uint(content, &config); | |
2256 | free(content); | |
2257 | if (ret) { | |
2258 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2259 | goto end; | |
2260 | } | |
2261 | ||
2262 | context.u.perf_counter.config = config; | |
2263 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2264 | config_element_name)) { | |
2265 | xmlChar *content; | |
dcf266c0 JG |
2266 | |
2267 | /* name */ | |
2268 | content = xmlNodeGetContent(perf_attr_node); | |
2269 | if (!content) { | |
2270 | ret = -LTTNG_ERR_NOMEM; | |
2271 | goto end; | |
2272 | } | |
2273 | ||
d2e67842 JG |
2274 | ret = lttng_strncpy(context.u.perf_counter.name, |
2275 | (const char *) content, | |
2276 | LTTNG_SYMBOL_NAME_LEN); | |
2277 | if (ret == -1) { | |
2278 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2279 | (const char *) content, | |
2280 | strlen((const char *) content), | |
2281 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2282 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2283 | free(content); | |
2284 | goto end; | |
2285 | } | |
dcf266c0 JG |
2286 | free(content); |
2287 | } | |
2288 | } | |
045fc617 JG |
2289 | } else if (!strcmp((const char *) context_child_node->name, |
2290 | config_element_context_app)) { | |
2291 | /* application context */ | |
2292 | xmlNodePtr app_ctx_node; | |
2293 | ||
2294 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2295 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2296 | app_ctx_node; app_ctx_node = | |
2297 | xmlNextElementSibling(app_ctx_node)) { | |
2298 | xmlChar *content; | |
2299 | char **target = strcmp( | |
2300 | (const char *) app_ctx_node->name, | |
2301 | config_element_context_app_provider_name) == 0 ? | |
2302 | &context.u.app_ctx.provider_name : | |
2303 | &context.u.app_ctx.ctx_name; | |
2304 | ||
2305 | content = xmlNodeGetContent(app_ctx_node); | |
2306 | if (!content) { | |
2307 | ret = -LTTNG_ERR_NOMEM; | |
2308 | goto end; | |
2309 | } | |
2310 | ||
2311 | *target = (char *) content; | |
2312 | } | |
2313 | } else { | |
2314 | /* Unrecognized context type */ | |
2315 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2316 | goto end; | |
dcf266c0 JG |
2317 | } |
2318 | ||
2319 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2320 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2321 | free(context.u.app_ctx.provider_name); | |
2322 | free(context.u.app_ctx.ctx_name); | |
2323 | } | |
dcf266c0 JG |
2324 | end: |
2325 | return ret; | |
2326 | } | |
2327 | ||
2328 | static | |
2329 | int process_contexts_node(xmlNodePtr contexts_node, | |
2330 | struct lttng_handle *handle, const char *channel_name) | |
2331 | { | |
2332 | int ret = 0; | |
2333 | xmlNodePtr context_node; | |
2334 | ||
2335 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2336 | context_node = xmlNextElementSibling(context_node)) { | |
2337 | ret = process_context_node(context_node, handle, channel_name); | |
2338 | if (ret) { | |
2339 | goto end; | |
2340 | } | |
2341 | } | |
2342 | end: | |
2343 | return ret; | |
2344 | } | |
2345 | ||
847a5916 JR |
2346 | static |
2347 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2348 | struct lttng_handle *handle) | |
2349 | { | |
dd49e13f | 2350 | int ret = 0, child; |
847a5916 JR |
2351 | xmlNodePtr targets_node = NULL; |
2352 | xmlNodePtr node; | |
2353 | ||
2354 | assert(handle); | |
2355 | assert(pid_tracker_node); | |
2356 | /* get the targets node */ | |
2357 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2358 | node = xmlNextElementSibling(node)) { | |
2359 | if (!strcmp((const char *) node->name, | |
2360 | config_element_targets)) { | |
2361 | targets_node = node; | |
2362 | break; | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | if (!targets_node) { | |
2367 | ret = LTTNG_ERR_INVALID; | |
2368 | goto end; | |
2369 | } | |
2370 | ||
2371 | /* Go through all pid_target node */ | |
2372 | child = xmlChildElementCount(targets_node); | |
2373 | if (child == 0) { | |
2374 | /* The session is explicitly set to target nothing. */ | |
2375 | ret = lttng_untrack_pid(handle, -1); | |
2376 | if (ret) { | |
2377 | goto end; | |
2378 | } | |
2379 | } | |
2380 | for (node = xmlFirstElementChild(targets_node); node; | |
2381 | node = xmlNextElementSibling(node)) { | |
2382 | xmlNodePtr pid_target_node = node; | |
2383 | ||
2384 | /* get pid node and track it */ | |
2385 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2386 | node = xmlNextElementSibling(node)) { | |
2387 | if (!strcmp((const char *) node->name, | |
2388 | config_element_pid)) { | |
2389 | int64_t pid; | |
2390 | xmlChar *content = NULL; | |
2391 | ||
2392 | content = xmlNodeGetContent(node); | |
2393 | if (!content) { | |
2394 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2395 | goto end; | |
2396 | } | |
2397 | ||
2398 | ret = parse_int(content, &pid); | |
2399 | free(content); | |
2400 | if (ret) { | |
2401 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2402 | goto end; | |
2403 | } | |
2404 | ||
2405 | ret = lttng_track_pid(handle, (int) pid); | |
2406 | if (ret) { | |
2407 | goto end; | |
2408 | } | |
2409 | } | |
2410 | } | |
2411 | node = pid_target_node; | |
2412 | } | |
2413 | ||
2414 | end: | |
2415 | return ret; | |
2416 | } | |
2417 | ||
dcf266c0 JG |
2418 | static |
2419 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2420 | { | |
2421 | int ret; | |
2422 | struct lttng_domain domain = { 0 }; | |
2423 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2424 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2425 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2426 | xmlNodePtr trackers_node = NULL; |
2427 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2428 | xmlNodePtr node; |
2429 | ||
2430 | assert(session_name); | |
2431 | ||
2432 | ret = init_domain(domain_node, &domain); | |
2433 | if (ret) { | |
2434 | goto end; | |
2435 | } | |
2436 | ||
2437 | handle = lttng_create_handle(session_name, &domain); | |
2438 | if (!handle) { | |
2439 | ret = -LTTNG_ERR_NOMEM; | |
2440 | goto end; | |
2441 | } | |
2442 | ||
2443 | /* get the channels node */ | |
2444 | for (node = xmlFirstElementChild(domain_node); node; | |
2445 | node = xmlNextElementSibling(node)) { | |
2446 | if (!strcmp((const char *) node->name, | |
2447 | config_element_channels)) { | |
2448 | channels_node = node; | |
2449 | break; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | if (!channels_node) { | |
2454 | goto end; | |
2455 | } | |
2456 | ||
2457 | /* create all channels */ | |
2458 | for (node = xmlFirstElementChild(channels_node); node; | |
2459 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2460 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2461 | xmlNodePtr contexts_node = NULL; |
2462 | xmlNodePtr events_node = NULL; | |
2463 | xmlNodePtr channel_attr_node; | |
2464 | ||
36d1687c JG |
2465 | /* |
2466 | * Channels of the "agent" types cannot be created directly. | |
2467 | * They are meant to be created implicitly through the | |
2468 | * activation of events in their domain. However, a user | |
2469 | * can override the default channel configuration attributes | |
2470 | * by creating the underlying UST channel _before_ enabling | |
2471 | * an agent domain event. | |
2472 | * | |
2473 | * Hence, the channel's type is substituted before the creation | |
2474 | * and restored by the time the events are created. | |
2475 | */ | |
2476 | switch (domain.type) { | |
2477 | case LTTNG_DOMAIN_JUL: | |
2478 | case LTTNG_DOMAIN_LOG4J: | |
2479 | case LTTNG_DOMAIN_PYTHON: | |
2480 | domain.type = LTTNG_DOMAIN_UST; | |
2481 | default: | |
2482 | break; | |
2483 | } | |
2484 | ||
4fc2b126 JR |
2485 | channel = lttng_channel_create(&domain); |
2486 | if (!channel) { | |
2487 | ret = -1; | |
2488 | goto end; | |
2489 | } | |
dcf266c0 JG |
2490 | |
2491 | for (channel_attr_node = xmlFirstElementChild(node); | |
2492 | channel_attr_node; channel_attr_node = | |
2493 | xmlNextElementSibling(channel_attr_node)) { | |
2494 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2495 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2496 | if (ret) { |
2497 | goto end; | |
2498 | } | |
2499 | } | |
2500 | ||
4fc2b126 | 2501 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2502 | if (ret < 0) { |
2503 | goto end; | |
2504 | } | |
2505 | ||
36d1687c JG |
2506 | /* Restore the original channel domain. */ |
2507 | domain.type = original_domain; | |
2508 | ||
4fc2b126 | 2509 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2510 | if (ret) { |
2511 | goto end; | |
2512 | } | |
2513 | ||
2514 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2515 | channel->name); |
dcf266c0 JG |
2516 | if (ret) { |
2517 | goto end; | |
2518 | } | |
4fc2b126 JR |
2519 | |
2520 | lttng_channel_destroy(channel); | |
dcf266c0 | 2521 | } |
4fc2b126 | 2522 | channel = NULL; |
847a5916 JR |
2523 | |
2524 | /* get the trackers node */ | |
2525 | for (node = xmlFirstElementChild(domain_node); node; | |
2526 | node = xmlNextElementSibling(node)) { | |
2527 | if (!strcmp((const char *) node->name, | |
2528 | config_element_trackers)) { | |
2529 | trackers_node = node; | |
2530 | break; | |
2531 | } | |
2532 | } | |
2533 | ||
2534 | if (!trackers_node) { | |
2535 | goto end; | |
2536 | } | |
2537 | ||
2538 | for (node = xmlFirstElementChild(trackers_node); node; | |
2539 | node = xmlNextElementSibling(node)) { | |
2540 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2541 | pid_tracker_node = node; | |
2542 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2543 | if (ret) { | |
2544 | goto end; | |
2545 | } | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | if (!pid_tracker_node) { | |
2550 | lttng_track_pid(handle, -1); | |
2551 | } | |
2552 | ||
dcf266c0 | 2553 | end: |
4fc2b126 | 2554 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2555 | lttng_destroy_handle(handle); |
2556 | return ret; | |
2557 | } | |
2558 | ||
66ea93b1 JG |
2559 | static |
2560 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
2561 | { | |
2562 | int ret; | |
2563 | enum lttng_rotation_status status; | |
2564 | struct lttng_rotation_schedule *periodic = | |
2565 | lttng_rotation_schedule_periodic_create(); | |
2566 | ||
2567 | if (!periodic) { | |
2568 | ret = -LTTNG_ERR_NOMEM; | |
2569 | goto error; | |
2570 | } | |
2571 | ||
2572 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
2573 | time_us); | |
2574 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
2575 | ret = -LTTNG_ERR_INVALID; | |
2576 | goto error; | |
2577 | } | |
2578 | ||
2579 | status = lttng_session_add_rotation_schedule(name, periodic); | |
2580 | switch (status) { | |
2581 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 2582 | ret = 0; |
66ea93b1 JG |
2583 | break; |
2584 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2585 | case LTTNG_ROTATION_STATUS_INVALID: | |
2586 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2587 | break; | |
2588 | default: | |
2589 | ret = -LTTNG_ERR_UNK; | |
2590 | break; | |
2591 | } | |
2592 | error: | |
2593 | lttng_rotation_schedule_destroy(periodic); | |
2594 | return ret; | |
2595 | } | |
2596 | ||
2597 | static | |
2598 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
2599 | { | |
2600 | int ret; | |
2601 | enum lttng_rotation_status status; | |
2602 | struct lttng_rotation_schedule *size = | |
2603 | lttng_rotation_schedule_size_threshold_create(); | |
2604 | ||
2605 | if (!size) { | |
2606 | ret = -LTTNG_ERR_NOMEM; | |
2607 | goto error; | |
2608 | } | |
2609 | ||
2610 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
2611 | size_bytes); | |
2612 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
2613 | ret = -LTTNG_ERR_INVALID; | |
2614 | goto error; | |
2615 | } | |
2616 | ||
2617 | status = lttng_session_add_rotation_schedule(name, size); | |
2618 | switch (status) { | |
2619 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 2620 | ret = 0; |
66ea93b1 JG |
2621 | break; |
2622 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2623 | case LTTNG_ROTATION_STATUS_INVALID: | |
2624 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2625 | break; | |
2626 | default: | |
2627 | ret = -LTTNG_ERR_UNK; | |
2628 | break; | |
2629 | } | |
2630 | error: | |
2631 | lttng_rotation_schedule_destroy(size); | |
2632 | return ret; | |
2633 | } | |
2634 | ||
ce6176f2 JG |
2635 | static |
2636 | int process_session_rotation_schedules_node( | |
2637 | xmlNodePtr schedules_node, | |
2638 | uint64_t *rotation_timer_interval, | |
2639 | uint64_t *rotation_size) | |
2640 | { | |
2641 | int ret = 0; | |
2642 | xmlNodePtr child; | |
2643 | ||
2644 | for (child = xmlFirstElementChild(schedules_node); | |
2645 | child; | |
2646 | child = xmlNextElementSibling(child)) { | |
2647 | if (!strcmp((const char *) child->name, | |
2648 | config_element_rotation_schedule_periodic)) { | |
2649 | xmlChar *content; | |
2650 | xmlNodePtr time_us_node; | |
2651 | ||
2652 | /* periodic rotation schedule */ | |
2653 | time_us_node = xmlFirstElementChild(child); | |
2654 | if (!time_us_node || | |
2655 | strcmp((const char *) time_us_node->name, | |
2656 | config_element_rotation_schedule_periodic_time_us)) { | |
2657 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2658 | goto end; | |
2659 | } | |
2660 | ||
2661 | /* time_us child */ | |
2662 | content = xmlNodeGetContent(time_us_node); | |
2663 | if (!content) { | |
2664 | ret = -LTTNG_ERR_NOMEM; | |
2665 | goto end; | |
2666 | } | |
2667 | ret = parse_uint(content, rotation_timer_interval); | |
2668 | free(content); | |
2669 | if (ret) { | |
2670 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2671 | goto end; | |
2672 | } | |
2673 | } else if (!strcmp((const char *) child->name, | |
2674 | config_element_rotation_schedule_size_threshold)) { | |
2675 | xmlChar *content; | |
2676 | xmlNodePtr bytes_node; | |
2677 | ||
2678 | /* size_threshold rotation schedule */ | |
2679 | bytes_node = xmlFirstElementChild(child); | |
2680 | if (!bytes_node || | |
2681 | strcmp((const char *) bytes_node->name, | |
2682 | config_element_rotation_schedule_size_threshold_bytes)) { | |
2683 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2684 | goto end; | |
2685 | } | |
2686 | ||
2687 | /* bytes child */ | |
2688 | content = xmlNodeGetContent(bytes_node); | |
2689 | if (!content) { | |
2690 | ret = -LTTNG_ERR_NOMEM; | |
2691 | goto end; | |
2692 | } | |
2693 | ret = parse_uint(content, rotation_size); | |
2694 | free(content); | |
2695 | if (ret) { | |
2696 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2697 | goto end; | |
2698 | } | |
2699 | } | |
2700 | } | |
2701 | ||
2702 | end: | |
2703 | return ret; | |
2704 | } | |
2705 | ||
dcf266c0 JG |
2706 | static |
2707 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
2708 | int overwrite, |
2709 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2710 | { |
2711 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 2712 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
2713 | rotation_timer_interval = 0, |
2714 | rotation_size = 0; | |
d324faf7 | 2715 | xmlChar *name = NULL; |
9e7c9f56 | 2716 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2717 | xmlNodePtr domains_node = NULL; |
2718 | xmlNodePtr output_node = NULL; | |
2719 | xmlNodePtr node; | |
90936dcf | 2720 | xmlNodePtr attributes_child; |
dcf266c0 JG |
2721 | struct lttng_domain *kernel_domain = NULL; |
2722 | struct lttng_domain *ust_domain = NULL; | |
2723 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2724 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2725 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2726 | |
2727 | for (node = xmlFirstElementChild(session_node); node; | |
2728 | node = xmlNextElementSibling(node)) { | |
2729 | if (!name && !strcmp((const char *) node->name, | |
2730 | config_element_name)) { | |
2731 | /* name */ | |
2732 | xmlChar *node_content = xmlNodeGetContent(node); | |
2733 | if (!node_content) { | |
2734 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2735 | goto error; |
dcf266c0 JG |
2736 | } |
2737 | ||
d324faf7 | 2738 | name = node_content; |
dcf266c0 JG |
2739 | } else if (!domains_node && !strcmp((const char *) node->name, |
2740 | config_element_domains)) { | |
2741 | /* domains */ | |
2742 | domains_node = node; | |
2743 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2744 | config_element_started)) { | |
2745 | /* started */ | |
2746 | xmlChar *node_content = xmlNodeGetContent(node); | |
2747 | if (!node_content) { | |
2748 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2749 | goto error; |
dcf266c0 JG |
2750 | } |
2751 | ||
2752 | ret = parse_bool(node_content, &started); | |
2753 | free(node_content); | |
2754 | if (ret) { | |
2755 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2756 | goto error; |
dcf266c0 JG |
2757 | } |
2758 | } else if (!output_node && !strcmp((const char *) node->name, | |
2759 | config_element_output)) { | |
2760 | /* output */ | |
2761 | output_node = node; | |
9e7c9f56 JR |
2762 | } else if (!shm_path && !strcmp((const char *) node->name, |
2763 | config_element_shared_memory_path)) { | |
2764 | /* shared memory path */ | |
2765 | xmlChar *node_content = xmlNodeGetContent(node); | |
2766 | if (!node_content) { | |
2767 | ret = -LTTNG_ERR_NOMEM; | |
2768 | goto error; | |
2769 | } | |
2770 | ||
2771 | shm_path = node_content; | |
dcf266c0 | 2772 | } else { |
259c2674 JD |
2773 | /* |
2774 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
2775 | * rotation_timer_interval. |
2776 | */ | |
2777 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
2778 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
2779 | if (!strcmp((const char *) attributes_child->name, | |
2780 | config_element_snapshot_mode)) { | |
2781 | /* snapshot_mode */ | |
2782 | xmlChar *snapshot_mode_content = | |
2783 | xmlNodeGetContent(attributes_child); | |
2784 | if (!snapshot_mode_content) { | |
2785 | ret = -LTTNG_ERR_NOMEM; | |
2786 | goto error; | |
2787 | } | |
dcf266c0 | 2788 | |
90936dcf JD |
2789 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
2790 | free(snapshot_mode_content); | |
2791 | if (ret) { | |
2792 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2793 | goto error; | |
2794 | } | |
2795 | } else if (!strcmp((const char *) attributes_child->name, | |
2796 | config_element_live_timer_interval)) { | |
2797 | /* live_timer_interval */ | |
2798 | xmlChar *timer_interval_content = | |
2799 | xmlNodeGetContent(attributes_child); | |
2800 | if (!timer_interval_content) { | |
2801 | ret = -LTTNG_ERR_NOMEM; | |
2802 | goto error; | |
2803 | } | |
dcf266c0 | 2804 | |
90936dcf JD |
2805 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
2806 | free(timer_interval_content); | |
2807 | if (ret) { | |
2808 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2809 | goto error; | |
2810 | } | |
ce6176f2 JG |
2811 | } else if (!strcmp((const char *) attributes_child->name, |
2812 | config_element_rotation_schedules)) { | |
2813 | ret = process_session_rotation_schedules_node( | |
2814 | attributes_child, | |
2815 | &rotation_timer_interval, | |
2816 | &rotation_size); | |
90936dcf JD |
2817 | if (ret) { |
2818 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2819 | goto error; | |
2820 | } | |
259c2674 | 2821 | |
259c2674 JD |
2822 | } |
2823 | } | |
dcf266c0 JG |
2824 | } |
2825 | } | |
2826 | ||
2827 | if (!name) { | |
2828 | /* Mandatory attribute, as defined in the session XSD */ | |
2829 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2830 | goto error; |
dcf266c0 JG |
2831 | } |
2832 | ||
d324faf7 | 2833 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2834 | /* This is not the session we are looking for */ |
c2da8cde DG |
2835 | ret = -LTTNG_ERR_NO_SESSION; |
2836 | goto error; | |
dcf266c0 JG |
2837 | } |
2838 | ||
2839 | /* Init domains to create the session handles */ | |
2840 | for (node = xmlFirstElementChild(domains_node); node; | |
2841 | node = xmlNextElementSibling(node)) { | |
2842 | struct lttng_domain *domain; | |
2843 | ||
2844 | domain = zmalloc(sizeof(*domain)); | |
2845 | if (!domain) { | |
2846 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2847 | goto error; |
dcf266c0 JG |
2848 | } |
2849 | ||
2850 | ret = init_domain(node, domain); | |
2851 | if (ret) { | |
2852 | goto domain_init_error; | |
2853 | } | |
2854 | ||
2855 | switch (domain->type) { | |
2856 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2857 | if (kernel_domain) { |
2858 | /* Same domain seen twice, invalid! */ | |
2859 | goto domain_init_error; | |
2860 | } | |
dcf266c0 JG |
2861 | kernel_domain = domain; |
2862 | break; | |
2863 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2864 | if (ust_domain) { |
2865 | /* Same domain seen twice, invalid! */ | |
2866 | goto domain_init_error; | |
2867 | } | |
dcf266c0 JG |
2868 | ust_domain = domain; |
2869 | break; | |
2870 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2871 | if (jul_domain) { |
2872 | /* Same domain seen twice, invalid! */ | |
2873 | goto domain_init_error; | |
2874 | } | |
dcf266c0 JG |
2875 | jul_domain = domain; |
2876 | break; | |
5cdb6027 DG |
2877 | case LTTNG_DOMAIN_LOG4J: |
2878 | if (log4j_domain) { | |
2879 | /* Same domain seen twice, invalid! */ | |
2880 | goto domain_init_error; | |
2881 | } | |
2882 | log4j_domain = domain; | |
2883 | break; | |
0e115563 DG |
2884 | case LTTNG_DOMAIN_PYTHON: |
2885 | if (python_domain) { | |
2886 | /* Same domain seen twice, invalid! */ | |
2887 | goto domain_init_error; | |
2888 | } | |
2889 | python_domain = domain; | |
2890 | break; | |
dcf266c0 JG |
2891 | default: |
2892 | WARN("Invalid domain type"); | |
2893 | goto domain_init_error; | |
2894 | } | |
2895 | continue; | |
2896 | domain_init_error: | |
2897 | free(domain); | |
2898 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2899 | goto error; |
dcf266c0 JG |
2900 | } |
2901 | ||
2aaf5fc7 JR |
2902 | /* Apply overrides */ |
2903 | if (overrides) { | |
2904 | if (overrides->session_name) { | |
2905 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
2906 | if (!name_override) { | |
2907 | ret = -LTTNG_ERR_NOMEM; | |
2908 | goto error; | |
2909 | } | |
2910 | ||
2911 | /* Overrides the session name to the provided name */ | |
2912 | xmlFree(name); | |
2913 | name = name_override; | |
2914 | } | |
2915 | } | |
2916 | ||
40b4155f | 2917 | if (overwrite) { |
dcf266c0 | 2918 | /* Destroy session if it exists */ |
d324faf7 | 2919 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2920 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2921 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2922 | goto error; |
dcf266c0 JG |
2923 | } |
2924 | } | |
2925 | ||
2926 | /* Create session type depending on output type */ | |
2927 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
2928 | ret = create_snapshot_session((const char *) name, output_node, |
2929 | overrides); | |
dcf266c0 JG |
2930 | } else if (live_timer_interval && |
2931 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 2932 | ret = create_session((const char *) name, |
1b08cbce | 2933 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
2934 | } else { |
2935 | /* regular session */ | |
194dfca0 | 2936 | ret = create_session((const char *) name, |
1b08cbce | 2937 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 2938 | } |
dcf266c0 | 2939 | if (ret) { |
c2da8cde | 2940 | goto error; |
dcf266c0 JG |
2941 | } |
2942 | ||
9e7c9f56 JR |
2943 | if (shm_path) { |
2944 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2945 | (const char *) shm_path); |
9e7c9f56 JR |
2946 | if (ret) { |
2947 | goto error; | |
2948 | } | |
2949 | } | |
2950 | ||
dcf266c0 JG |
2951 | for (node = xmlFirstElementChild(domains_node); node; |
2952 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2953 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2954 | if (ret) { |
2955 | goto end; | |
2956 | } | |
2957 | } | |
2958 | ||
66ea93b1 JG |
2959 | if (rotation_timer_interval) { |
2960 | ret = add_periodic_rotation((const char *) name, | |
2961 | rotation_timer_interval); | |
2962 | if (ret < 0) { | |
259c2674 JD |
2963 | goto error; |
2964 | } | |
66ea93b1 JG |
2965 | } |
2966 | if (rotation_size) { | |
2967 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 2968 | rotation_size); |
66ea93b1 | 2969 | if (ret < 0) { |
259c2674 JD |
2970 | goto error; |
2971 | } | |
2972 | } | |
2973 | ||
dcf266c0 | 2974 | if (started) { |
d324faf7 | 2975 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2976 | if (ret) { |
2977 | goto end; | |
2978 | } | |
2979 | } | |
c2da8cde | 2980 | |
dcf266c0 | 2981 | end: |
b2579dc1 | 2982 | if (ret < 0) { |
d324faf7 JG |
2983 | ERR("Failed to load session %s: %s", (const char *) name, |
2984 | lttng_strerror(ret)); | |
2985 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2986 | } |
2987 | ||
c2da8cde | 2988 | error: |
dcf266c0 JG |
2989 | free(kernel_domain); |
2990 | free(ust_domain); | |
2991 | free(jul_domain); | |
5cdb6027 | 2992 | free(log4j_domain); |
135a3893 | 2993 | free(python_domain); |
d324faf7 | 2994 | xmlFree(name); |
9e7c9f56 | 2995 | xmlFree(shm_path); |
dcf266c0 JG |
2996 | return ret; |
2997 | } | |
2998 | ||
cf53c06d DG |
2999 | /* |
3000 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3001 | * Return -1 if the path is EPERM. | |
3002 | */ | |
3003 | static int validate_file_read_creds(const char *path) | |
3004 | { | |
3005 | int ret; | |
3006 | ||
3007 | assert(path); | |
3008 | ||
3009 | /* Can we read the file. */ | |
3010 | ret = access(path, R_OK); | |
3011 | if (!ret) { | |
3012 | goto valid; | |
3013 | } | |
3014 | if (errno == EACCES) { | |
3015 | return -1; | |
3016 | } else { | |
3017 | /* Invalid. */ | |
3018 | return 0; | |
3019 | } | |
3020 | valid: | |
3021 | return 1; | |
3022 | } | |
3023 | ||
dcf266c0 JG |
3024 | static |
3025 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3026 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3027 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3028 | { |
3029 | int ret, session_found = !session_name; | |
3030 | xmlDocPtr doc = NULL; | |
3031 | xmlNodePtr sessions_node; | |
3032 | xmlNodePtr session_node; | |
dcf266c0 JG |
3033 | |
3034 | assert(path); | |
3035 | assert(validation_ctx); | |
3036 | ||
cf53c06d DG |
3037 | ret = validate_file_read_creds(path); |
3038 | if (ret != 1) { | |
3039 | if (ret == -1) { | |
3040 | ret = -LTTNG_ERR_EPERM; | |
3041 | } else { | |
3042 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3043 | } | |
dcf266c0 JG |
3044 | goto end; |
3045 | } | |
3046 | ||
3047 | doc = xmlParseFile(path); | |
3048 | if (!doc) { | |
3049 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3050 | goto end; | |
3051 | } | |
3052 | ||
3053 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3054 | if (ret) { | |
3055 | ERR("Session configuration file validation failed"); | |
3056 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3057 | goto end; | |
3058 | } | |
3059 | ||
3060 | sessions_node = xmlDocGetRootElement(doc); | |
3061 | if (!sessions_node) { | |
3062 | goto end; | |
3063 | } | |
3064 | ||
3065 | for (session_node = xmlFirstElementChild(sessions_node); | |
3066 | session_node; session_node = | |
3067 | xmlNextElementSibling(session_node)) { | |
3068 | ret = process_session_node(session_node, | |
1b08cbce | 3069 | session_name, overwrite, overrides); |
dcf266c0 JG |
3070 | if (session_name && ret == 0) { |
3071 | /* Target session found and loaded */ | |
3072 | session_found = 1; | |
3073 | break; | |
3074 | } | |
3075 | } | |
3076 | end: | |
3077 | xmlFreeDoc(doc); | |
3078 | if (!ret) { | |
a96bc65d | 3079 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3080 | } |
3081 | return ret; | |
3082 | } | |
3083 | ||
3084 | static | |
3085 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3086 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3087 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3088 | { |
3089 | int ret, session_found = !session_name; | |
dcf266c0 | 3090 | DIR *directory = NULL; |
cce35f91 JG |
3091 | struct lttng_dynamic_buffer file_path; |
3092 | size_t path_len; | |
dcf266c0 JG |
3093 | |
3094 | assert(path); | |
3095 | assert(validation_ctx); | |
cce35f91 JG |
3096 | path_len = strlen(path); |
3097 | lttng_dynamic_buffer_init(&file_path); | |
3098 | if (path_len >= LTTNG_PATH_MAX) { | |
3099 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3100 | path, path_len, LTTNG_PATH_MAX); | |
3101 | ret = -LTTNG_ERR_INVALID; | |
3102 | goto end; | |
3103 | } | |
dcf266c0 | 3104 | |
4af16958 DG |
3105 | directory = opendir(path); |
3106 | if (!directory) { | |
11143783 DG |
3107 | switch (errno) { |
3108 | case ENOTDIR: | |
0f0a81b5 DG |
3109 | /* Try the file loading. */ |
3110 | break; | |
11143783 DG |
3111 | case ENOENT: |
3112 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3113 | goto end; | |
3114 | default: | |
0f0a81b5 DG |
3115 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3116 | goto end; | |
4af16958 | 3117 | } |
dcf266c0 | 3118 | } |
4af16958 | 3119 | if (directory) { |
cce35f91 | 3120 | size_t file_path_root_len; |
dcf266c0 | 3121 | |
cce35f91 JG |
3122 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3123 | LTTNG_PATH_MAX); | |
3124 | if (ret) { | |
3125 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3126 | goto end; |
3127 | } | |
3128 | ||
cce35f91 JG |
3129 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3130 | if (ret) { | |
dcf266c0 | 3131 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3132 | goto end; |
3133 | } | |
3134 | ||
cce35f91 JG |
3135 | if (file_path.data[file_path.size - 1] != '/') { |
3136 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3137 | if (ret) { | |
3138 | ret = -LTTNG_ERR_NOMEM; | |
3139 | goto end; | |
3140 | } | |
dcf266c0 | 3141 | } |
cce35f91 | 3142 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3143 | |
3144 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3145 | for (;;) { |
3146 | size_t file_name_len; | |
3147 | struct dirent *result; | |
3148 | ||
3149 | /* | |
3150 | * When the end of the directory stream is reached, NULL | |
3151 | * is returned and errno is kept unchanged. When an | |
3152 | * error occurs, NULL is returned and errno is set | |
3153 | * accordingly. To distinguish between the two, set | |
3154 | * errno to zero before calling readdir(). | |
3155 | * | |
3156 | * On success, readdir() returns a pointer to a dirent | |
3157 | * structure. This structure may be statically | |
3158 | * allocated, do not attempt to free(3) it. | |
3159 | */ | |
3160 | errno = 0; | |
3161 | result = readdir(directory); | |
3162 | ||
ff86d8d0 | 3163 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3164 | if (!result) { |
3165 | if (errno) { | |
3166 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3167 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3168 | goto end; | |
3169 | } | |
3170 | break; | |
3171 | } | |
3172 | ||
3173 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3174 | |
3175 | if (file_name_len <= | |
3176 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3177 | continue; | |
3178 | } | |
3179 | ||
cce35f91 JG |
3180 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3181 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3182 | result->d_name, | |
3183 | /* +1 to account for NULL terminator. */ | |
3184 | file_path.size + file_name_len + 1, | |
3185 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3186 | continue; |
3187 | } | |
3188 | ||
cce35f91 | 3189 | /* Does the file end with .lttng? */ |
dcf266c0 | 3190 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3191 | result->d_name + file_name_len - sizeof( |
3192 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3193 | continue; |
3194 | } | |
3195 | ||
cce35f91 JG |
3196 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3197 | file_name_len + 1); | |
3198 | if (ret) { | |
3199 | ret = -LTTNG_ERR_NOMEM; | |
3200 | goto end; | |
3201 | } | |
dcf266c0 | 3202 | |
cce35f91 | 3203 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3204 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3205 | if (session_name && !ret) { |
3206 | session_found = 1; | |
3207 | break; | |
3208 | } | |
cce35f91 JG |
3209 | /* |
3210 | * Reset the buffer's size to the location of the | |
3211 | * path's trailing '/'. | |
3212 | */ | |
3213 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3214 | file_path_root_len); | |
3215 | if (ret) { | |
3216 | ret = -LTTNG_ERR_UNK; | |
3217 | goto end; | |
3218 | } | |
dcf266c0 JG |
3219 | } |
3220 | ||
dcf266c0 JG |
3221 | } else { |
3222 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3223 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3224 | if (ret) { |
3225 | goto end; | |
3226 | } else { | |
3227 | session_found = 1; | |
3228 | } | |
3229 | } | |
3230 | ||
3231 | end: | |
3232 | if (directory) { | |
3233 | if (closedir(directory)) { | |
3234 | PERROR("closedir"); | |
3235 | } | |
3236 | } | |
464133ea | 3237 | if (session_found && !ret) { |
6c66fa0f | 3238 | ret = 0; |
dcf266c0 | 3239 | } |
cce35f91 | 3240 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3241 | return ret; |
3242 | } | |
3243 | ||
ab38c13f DG |
3244 | /* |
3245 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3246 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3247 | */ |
3248 | static int validate_path_creds(const char *path) | |
3249 | { | |
3250 | int ret, uid = getuid(); | |
3251 | struct stat buf; | |
3252 | ||
3253 | assert(path); | |
3254 | ||
cf53c06d | 3255 | if (uid == 0) { |
ab38c13f DG |
3256 | goto valid; |
3257 | } | |
3258 | ||
3259 | ret = stat(path, &buf); | |
3260 | if (ret < 0) { | |
3261 | if (errno != ENOENT) { | |
3262 | PERROR("stat"); | |
3263 | } | |
ab38c13f DG |
3264 | goto valid; |
3265 | } | |
3266 | ||
3267 | if (buf.st_uid != uid) { | |
3268 | goto invalid; | |
3269 | } | |
3270 | ||
3271 | valid: | |
ab38c13f | 3272 | return 1; |
cf53c06d DG |
3273 | invalid: |
3274 | return 0; | |
ab38c13f DG |
3275 | } |
3276 | ||
dcf266c0 JG |
3277 | LTTNG_HIDDEN |
3278 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3279 | int overwrite, unsigned int autoload, |
3280 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3281 | { |
3282 | int ret; | |
6c66fa0f | 3283 | bool session_loaded = false; |
cf53c06d | 3284 | const char *path_ptr = NULL; |
dcf266c0 JG |
3285 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3286 | ||
3287 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3288 | if (ret) { | |
3289 | goto end; | |
3290 | } | |
3291 | ||
3292 | if (!path) { | |
ab38c13f DG |
3293 | char *home_path; |
3294 | const char *sys_path; | |
3295 | ||
dcf266c0 | 3296 | /* Try home path */ |
ab38c13f | 3297 | home_path = utils_get_home_dir(); |
dcf266c0 | 3298 | if (home_path) { |
ab38c13f | 3299 | char path[PATH_MAX]; |
dcf266c0 | 3300 | |
d4fcf703 DG |
3301 | /* |
3302 | * Try user session configuration path. Ignore error here so we can | |
3303 | * continue loading the system wide sessions. | |
3304 | */ | |
ab38c13f DG |
3305 | if (autoload) { |
3306 | ret = snprintf(path, sizeof(path), | |
3307 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3308 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3309 | if (ret < 0) { |
3310 | PERROR("snprintf session autoload home config path"); | |
3311 | goto end; | |
3312 | } | |
3313 | ||
3314 | /* | |
3315 | * Credentials are only validated for the autoload in order to | |
3316 | * avoid any user session daemon to try to load kernel sessions | |
3317 | * automatically and failing all the times. | |
3318 | */ | |
3319 | ret = validate_path_creds(path); | |
3320 | if (ret) { | |
3321 | path_ptr = path; | |
3322 | } | |
ab38c13f DG |
3323 | } else { |
3324 | ret = snprintf(path, sizeof(path), | |
3325 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3326 | if (ret < 0) { |
3327 | PERROR("snprintf session home config path"); | |
3328 | goto end; | |
3329 | } | |
3330 | path_ptr = path; | |
ab38c13f | 3331 | } |
cf53c06d DG |
3332 | if (path_ptr) { |
3333 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3334 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3335 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3336 | goto end; | |
3337 | } | |
3338 | /* | |
3339 | * Continue even if the session was found since we have to try | |
3340 | * the system wide sessions. | |
3341 | */ | |
6c66fa0f | 3342 | session_loaded = true; |
ab38c13f | 3343 | } |
d4fcf703 | 3344 | } |
ab38c13f | 3345 | |
cf53c06d DG |
3346 | /* Reset path pointer for the system wide dir. */ |
3347 | path_ptr = NULL; | |
3348 | ||
d4fcf703 DG |
3349 | /* Try system wide configuration directory. */ |
3350 | if (autoload) { | |
3351 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3352 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3353 | ret = validate_path_creds(sys_path); |
3354 | if (ret) { | |
3355 | path_ptr = sys_path; | |
3356 | } | |
d4fcf703 | 3357 | } else { |
cf53c06d DG |
3358 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3359 | path_ptr = sys_path; | |
d4fcf703 DG |
3360 | } |
3361 | ||
cf53c06d DG |
3362 | if (path_ptr) { |
3363 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3364 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3365 | if (!ret) { |
3366 | session_loaded = true; | |
3367 | } | |
dcf266c0 JG |
3368 | } |
3369 | } else { | |
3370 | ret = access(path, F_OK); | |
3371 | if (ret < 0) { | |
3372 | PERROR("access"); | |
3373 | switch (errno) { | |
3374 | case ENOENT: | |
3375 | ret = -LTTNG_ERR_INVALID; | |
3376 | WARN("Session configuration path does not exist."); | |
3377 | break; | |
3378 | case EACCES: | |
3379 | ret = -LTTNG_ERR_EPERM; | |
3380 | break; | |
3381 | default: | |
3382 | ret = -LTTNG_ERR_UNK; | |
3383 | break; | |
3384 | } | |
3385 | goto end; | |
3386 | } | |
3387 | ||
3388 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3389 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3390 | } |
3391 | end: | |
3392 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3393 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3394 | /* | |
3395 | * Don't report an error if no sessions are found when called | |
3396 | * without a session_name or a search path. | |
3397 | */ | |
3398 | ret = 0; | |
3399 | } | |
6c66fa0f JG |
3400 | |
3401 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3402 | /* A matching session was found in one of the search paths. */ | |
3403 | ret = 0; | |
3404 | } | |
dcf266c0 JG |
3405 | return ret; |
3406 | } | |
56766c75 JG |
3407 | |
3408 | static | |
3409 | void __attribute__((destructor)) session_config_exit(void) | |
3410 | { | |
3411 | xmlCleanupParser(); | |
3412 | } |