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 | |
259c2674 | 136 | LTTNG_HIDDEN const char * const config_element_rotation_timer_interval = "rotation_schedule_timer_period"; |
329f3443 | 137 | LTTNG_HIDDEN const char * const config_element_rotation_size = "rotation_schedule_size"; |
259c2674 JD |
138 | LTTNG_HIDDEN const char * const config_element_rotation_schedule = "rotation_schedule"; |
139 | ||
fb198a11 JG |
140 | const char * const config_domain_type_kernel = "KERNEL"; |
141 | const char * const config_domain_type_ust = "UST"; | |
142 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 143 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 144 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
145 | |
146 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
147 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
148 | const char * const config_buffer_type_global = "GLOBAL"; | |
149 | ||
150 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
151 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
152 | ||
153 | const char * const config_output_type_splice = "SPLICE"; | |
154 | const char * const config_output_type_mmap = "MMAP"; | |
155 | ||
156 | const char * const config_loglevel_type_all = "ALL"; | |
157 | const char * const config_loglevel_type_range = "RANGE"; | |
158 | const char * const config_loglevel_type_single = "SINGLE"; | |
159 | ||
160 | const char * const config_event_type_all = "ALL"; | |
161 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
162 | const char * const config_event_type_probe = "PROBE"; | |
163 | const char * const config_event_type_function = "FUNCTION"; | |
164 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
165 | const char * const config_event_type_noop = "NOOP"; | |
166 | const char * const config_event_type_syscall = "SYSCALL"; | |
167 | const char * const config_event_type_kprobe = "KPROBE"; | |
168 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
169 | ||
170 | const char * const config_event_context_pid = "PID"; | |
171 | const char * const config_event_context_procname = "PROCNAME"; | |
172 | const char * const config_event_context_prio = "PRIO"; | |
173 | const char * const config_event_context_nice = "NICE"; | |
174 | const char * const config_event_context_vpid = "VPID"; | |
175 | const char * const config_event_context_tid = "TID"; | |
176 | const char * const config_event_context_vtid = "VTID"; | |
177 | const char * const config_event_context_ppid = "PPID"; | |
178 | const char * const config_event_context_vppid = "VPPID"; | |
179 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
180 | const char * const config_event_context_hostname = "HOSTNAME"; | |
181 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 182 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
183 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
184 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
185 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
186 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
187 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
188 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
189 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
fb198a11 | 190 | |
fbd987c9 JG |
191 | /* Deprecated symbols */ |
192 | const char * const config_element_perf; | |
193 | ||
d7b645e2 JR |
194 | enum process_event_node_phase { |
195 | CREATION = 0, | |
196 | ENABLE = 1, | |
197 | }; | |
198 | ||
dcf266c0 JG |
199 | struct consumer_output { |
200 | int enabled; | |
201 | char *path; | |
202 | char *control_uri; | |
203 | char *data_uri; | |
204 | }; | |
205 | ||
1501a7f3 JG |
206 | static int config_entry_handler_filter(struct handler_filter_args *args, |
207 | const char *section, const char *name, const char *value) | |
208 | { | |
209 | int ret = 0; | |
210 | struct config_entry entry = { section, name, value }; | |
211 | ||
212 | assert(args); | |
213 | ||
214 | if (!section || !name || !value) { | |
215 | ret = -EIO; | |
216 | goto end; | |
217 | } | |
218 | ||
219 | if (args->section) { | |
220 | if (strcmp(args->section, section)) { | |
221 | goto end; | |
222 | } | |
223 | } | |
224 | ||
225 | ret = args->handler(&entry, args->user_data); | |
226 | end: | |
227 | return ret; | |
228 | } | |
229 | ||
230 | LTTNG_HIDDEN | |
231 | int config_get_section_entries(const char *override_path, const char *section, | |
232 | config_entry_handler_cb handler, void *user_data) | |
233 | { | |
234 | int ret = 0; | |
7ab02a27 | 235 | char *path; |
1501a7f3 JG |
236 | FILE *config_file = NULL; |
237 | struct handler_filter_args filter = { section, handler, user_data }; | |
238 | ||
7ab02a27 DG |
239 | /* First, try system-wide conf. file. */ |
240 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
241 | ||
242 | config_file = fopen(path, "r"); | |
243 | if (config_file) { | |
244 | DBG("Loading daemon conf file at %s", path); | |
245 | /* | |
246 | * Return value is not very important here since error or not, we | |
247 | * continue and try the next possible conf. file. | |
248 | */ | |
249 | (void) ini_parse_file(config_file, | |
250 | (ini_entry_handler) config_entry_handler_filter, | |
251 | (void *) &filter); | |
252 | fclose(config_file); | |
253 | } | |
254 | ||
255 | /* Second is the user local configuration. */ | |
256 | path = utils_get_home_dir(); | |
257 | if (path) { | |
258 | char fullpath[PATH_MAX]; | |
259 | ||
260 | ret = snprintf(fullpath, sizeof(fullpath), | |
261 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
262 | if (ret < 0) { | |
263 | PERROR("snprintf user conf. path"); | |
264 | goto error; | |
265 | } | |
266 | ||
267 | config_file = fopen(fullpath, "r"); | |
268 | if (config_file) { | |
269 | DBG("Loading daemon user conf file at %s", path); | |
270 | /* | |
271 | * Return value is not very important here since error or not, we | |
272 | * continue and try the next possible conf. file. | |
273 | */ | |
274 | (void) ini_parse_file(config_file, | |
275 | (ini_entry_handler) config_entry_handler_filter, | |
276 | (void *) &filter); | |
277 | fclose(config_file); | |
278 | } | |
279 | } | |
280 | ||
281 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
282 | if (override_path) { |
283 | config_file = fopen(override_path, "r"); | |
284 | if (config_file) { | |
7ab02a27 DG |
285 | DBG("Loading daemon command line conf file at %s", override_path); |
286 | (void) ini_parse_file(config_file, | |
287 | (ini_entry_handler) config_entry_handler_filter, | |
288 | (void *) &filter); | |
289 | fclose(config_file); | |
1501a7f3 JG |
290 | } else { |
291 | ERR("Failed to open daemon configuration file at %s", | |
292 | override_path); | |
293 | ret = -ENOENT; | |
7ab02a27 | 294 | goto error; |
1501a7f3 JG |
295 | } |
296 | } | |
297 | ||
7ab02a27 DG |
298 | /* Everything went well. */ |
299 | ret = 0; | |
1501a7f3 | 300 | |
7ab02a27 | 301 | error: |
1501a7f3 JG |
302 | return ret; |
303 | } | |
304 | ||
305 | LTTNG_HIDDEN | |
306 | int config_parse_value(const char *value) | |
307 | { | |
308 | int i, ret = 0; | |
309 | char *endptr, *lower_str; | |
310 | size_t len; | |
311 | unsigned long v; | |
312 | ||
313 | len = strlen(value); | |
314 | if (!len) { | |
315 | ret = -1; | |
316 | goto end; | |
317 | } | |
318 | ||
319 | v = strtoul(value, &endptr, 10); | |
320 | if (endptr != value) { | |
321 | ret = v; | |
322 | goto end; | |
323 | } | |
324 | ||
325 | lower_str = zmalloc(len + 1); | |
326 | if (!lower_str) { | |
327 | PERROR("zmalloc"); | |
328 | ret = -errno; | |
329 | goto end; | |
330 | } | |
331 | ||
332 | for (i = 0; i < len; i++) { | |
333 | lower_str[i] = tolower(value[i]); | |
334 | } | |
335 | ||
336 | if (!strcmp(lower_str, config_str_yes) || | |
337 | !strcmp(lower_str, config_str_true) || | |
338 | !strcmp(lower_str, config_str_on)) { | |
339 | ret = 1; | |
340 | } else if (!strcmp(lower_str, config_str_no) || | |
341 | !strcmp(lower_str, config_str_false) || | |
342 | !strcmp(lower_str, config_str_off)) { | |
343 | ret = 0; | |
344 | } else { | |
345 | ret = -1; | |
346 | } | |
347 | ||
348 | free(lower_str); | |
349 | end: | |
350 | return ret; | |
351 | } | |
36f2332b JG |
352 | |
353 | /* | |
354 | * Returns a xmlChar string which must be released using xmlFree(). | |
355 | */ | |
356 | static xmlChar *encode_string(const char *in_str) | |
357 | { | |
358 | xmlChar *out_str = NULL; | |
359 | xmlCharEncodingHandlerPtr handler; | |
360 | int out_len, ret, in_len; | |
361 | ||
362 | assert(in_str); | |
363 | ||
364 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
365 | if (!handler) { | |
366 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
367 | goto end; | |
368 | } | |
369 | ||
370 | in_len = strlen(in_str); | |
371 | /* | |
f76d886f JG |
372 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
373 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 374 | */ |
f76d886f | 375 | out_len = (in_len * 4) + 1; |
36f2332b JG |
376 | out_str = xmlMalloc(out_len); |
377 | if (!out_str) { | |
378 | goto end; | |
379 | } | |
380 | ||
381 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
382 | if (ret < 0) { | |
383 | xmlFree(out_str); | |
384 | out_str = NULL; | |
385 | goto end; | |
386 | } | |
387 | ||
388 | /* out_len is now the size of out_str */ | |
389 | out_str[out_len] = '\0'; | |
390 | end: | |
391 | return out_str; | |
392 | } | |
393 | ||
394 | LTTNG_HIDDEN | |
705bb62f | 395 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
396 | { |
397 | int ret; | |
398 | struct config_writer *writer; | |
399 | xmlOutputBufferPtr buffer; | |
400 | ||
401 | writer = zmalloc(sizeof(struct config_writer)); | |
402 | if (!writer) { | |
403 | PERROR("zmalloc config_writer_create"); | |
404 | goto end; | |
405 | } | |
406 | ||
407 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
408 | if (!buffer) { | |
409 | goto error_destroy; | |
410 | } | |
411 | ||
412 | writer->writer = xmlNewTextWriter(buffer); | |
413 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
414 | config_xml_encoding, NULL); | |
415 | if (ret < 0) { | |
416 | goto error_destroy; | |
417 | } | |
418 | ||
419 | ret = xmlTextWriterSetIndentString(writer->writer, | |
420 | BAD_CAST config_xml_indent_string); | |
705bb62f | 421 | if (ret) { |
36f2332b JG |
422 | goto error_destroy; |
423 | } | |
424 | ||
705bb62f JRJ |
425 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
426 | if (ret) { | |
36f2332b JG |
427 | goto error_destroy; |
428 | } | |
429 | ||
430 | end: | |
431 | return writer; | |
432 | error_destroy: | |
433 | config_writer_destroy(writer); | |
434 | return NULL; | |
435 | } | |
436 | ||
437 | LTTNG_HIDDEN | |
438 | int config_writer_destroy(struct config_writer *writer) | |
439 | { | |
440 | int ret = 0; | |
441 | ||
442 | if (!writer) { | |
443 | ret = -EINVAL; | |
444 | goto end; | |
445 | } | |
446 | ||
447 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
448 | WARN("Could not close XML document"); | |
449 | ret = -EIO; | |
450 | } | |
451 | ||
452 | if (writer->writer) { | |
453 | xmlFreeTextWriter(writer->writer); | |
454 | } | |
455 | ||
456 | free(writer); | |
457 | end: | |
458 | return ret; | |
459 | } | |
460 | ||
461 | LTTNG_HIDDEN | |
462 | int config_writer_open_element(struct config_writer *writer, | |
463 | const char *element_name) | |
464 | { | |
465 | int ret; | |
466 | xmlChar *encoded_element_name; | |
467 | ||
468 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
469 | ret = -1; | |
470 | goto end; | |
471 | } | |
472 | ||
473 | encoded_element_name = encode_string(element_name); | |
474 | if (!encoded_element_name) { | |
475 | ret = -1; | |
476 | goto end; | |
477 | } | |
478 | ||
479 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
480 | xmlFree(encoded_element_name); | |
481 | end: | |
28676a1d | 482 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
483 | } |
484 | ||
e10b6a1c JG |
485 | LTTNG_HIDDEN |
486 | int config_writer_write_attribute(struct config_writer *writer, | |
487 | const char *name, const char *value) | |
488 | { | |
489 | int ret; | |
490 | xmlChar *encoded_name = NULL; | |
491 | xmlChar *encoded_value = NULL; | |
492 | ||
493 | if (!writer || !writer->writer || !name || !name[0]) { | |
494 | ret = -1; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | encoded_name = encode_string(name); | |
499 | if (!encoded_name) { | |
500 | ret = -1; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | encoded_value = encode_string(value); | |
505 | if (!encoded_value) { | |
506 | ret = -1; | |
507 | goto end; | |
508 | } | |
509 | ||
510 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
511 | encoded_value); | |
512 | end: | |
513 | xmlFree(encoded_name); | |
514 | xmlFree(encoded_value); | |
515 | return ret >= 0 ? 0 : ret; | |
516 | } | |
517 | ||
36f2332b JG |
518 | LTTNG_HIDDEN |
519 | int config_writer_close_element(struct config_writer *writer) | |
520 | { | |
521 | int ret; | |
522 | ||
523 | if (!writer || !writer->writer) { | |
524 | ret = -1; | |
525 | goto end; | |
526 | } | |
527 | ||
528 | ret = xmlTextWriterEndElement(writer->writer); | |
529 | end: | |
28676a1d | 530 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
531 | } |
532 | ||
533 | LTTNG_HIDDEN | |
534 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
535 | const char *element_name, uint64_t value) | |
536 | { | |
537 | int ret; | |
538 | xmlChar *encoded_element_name; | |
539 | ||
540 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
541 | ret = -1; | |
542 | goto end; | |
543 | } | |
544 | ||
545 | encoded_element_name = encode_string(element_name); | |
546 | if (!encoded_element_name) { | |
547 | ret = -1; | |
548 | goto end; | |
549 | } | |
550 | ||
551 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
552 | encoded_element_name, "%" PRIu64, value); | |
553 | xmlFree(encoded_element_name); | |
554 | end: | |
28676a1d | 555 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
556 | } |
557 | ||
558 | LTTNG_HIDDEN | |
559 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
560 | const char *element_name, int64_t value) | |
561 | { | |
562 | int ret; | |
563 | xmlChar *encoded_element_name; | |
564 | ||
565 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
566 | ret = -1; | |
567 | goto end; | |
568 | } | |
569 | ||
570 | encoded_element_name = encode_string(element_name); | |
571 | if (!encoded_element_name) { | |
572 | ret = -1; | |
573 | goto end; | |
574 | } | |
575 | ||
576 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
577 | encoded_element_name, "%" PRIi64, value); | |
578 | xmlFree(encoded_element_name); | |
579 | end: | |
28676a1d | 580 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
581 | } |
582 | ||
583 | LTTNG_HIDDEN | |
584 | int config_writer_write_element_bool(struct config_writer *writer, | |
585 | const char *element_name, int value) | |
586 | { | |
587 | return config_writer_write_element_string(writer, element_name, | |
588 | value ? config_xml_true : config_xml_false); | |
589 | } | |
590 | ||
591 | LTTNG_HIDDEN | |
592 | int config_writer_write_element_string(struct config_writer *writer, | |
593 | const char *element_name, const char *value) | |
594 | { | |
595 | int ret; | |
596 | xmlChar *encoded_element_name = NULL; | |
597 | xmlChar *encoded_value = NULL; | |
598 | ||
599 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
600 | !value) { | |
601 | ret = -1; | |
602 | goto end; | |
603 | } | |
604 | ||
605 | encoded_element_name = encode_string(element_name); | |
606 | if (!encoded_element_name) { | |
607 | ret = -1; | |
608 | goto end; | |
609 | } | |
610 | ||
611 | encoded_value = encode_string(value); | |
612 | if (!encoded_value) { | |
613 | ret = -1; | |
614 | goto end; | |
615 | } | |
616 | ||
617 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 618 | encoded_value); |
36f2332b JG |
619 | end: |
620 | xmlFree(encoded_element_name); | |
621 | xmlFree(encoded_value); | |
28676a1d | 622 | return ret >= 0 ? 0 : ret; |
36f2332b | 623 | } |
dcf266c0 JG |
624 | |
625 | static | |
626 | void xml_error_handler(void *ctx, const char *format, ...) | |
627 | { | |
628 | char *errMsg; | |
629 | va_list args; | |
630 | int ret; | |
631 | ||
632 | va_start(args, format); | |
633 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 634 | va_end(args); |
dcf266c0 JG |
635 | if (ret == -1) { |
636 | ERR("String allocation failed in xml error handler"); | |
637 | return; | |
638 | } | |
dcf266c0 JG |
639 | |
640 | fprintf(stderr, "XML Error: %s", errMsg); | |
641 | free(errMsg); | |
642 | } | |
643 | ||
644 | static | |
645 | void fini_session_config_validation_ctx( | |
646 | struct session_config_validation_ctx *ctx) | |
647 | { | |
648 | if (ctx->parser_ctx) { | |
649 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
650 | } | |
651 | ||
652 | if (ctx->schema) { | |
653 | xmlSchemaFree(ctx->schema); | |
654 | } | |
655 | ||
656 | if (ctx->schema_validation_ctx) { | |
657 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
658 | } | |
659 | ||
660 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
661 | } | |
662 | ||
54e399cb JG |
663 | static |
664 | char *get_session_config_xsd_path() | |
665 | { | |
666 | char *xsd_path; | |
e8fa9fb0 | 667 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
668 | size_t base_path_len; |
669 | size_t max_path_len; | |
670 | ||
671 | if (!base_path) { | |
672 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
673 | } | |
674 | ||
675 | base_path_len = strlen(base_path); | |
676 | max_path_len = base_path_len + | |
677 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
678 | xsd_path = zmalloc(max_path_len); | |
679 | if (!xsd_path) { | |
680 | goto end; | |
681 | } | |
682 | ||
00a7f6f8 | 683 | strcpy(xsd_path, base_path); |
54e399cb JG |
684 | if (xsd_path[base_path_len - 1] != '/') { |
685 | xsd_path[base_path_len++] = '/'; | |
686 | } | |
687 | ||
00a7f6f8 | 688 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
689 | end: |
690 | return xsd_path; | |
691 | } | |
692 | ||
dcf266c0 JG |
693 | static |
694 | int init_session_config_validation_ctx( | |
695 | struct session_config_validation_ctx *ctx) | |
696 | { | |
697 | int ret; | |
54e399cb JG |
698 | char *xsd_path = get_session_config_xsd_path(); |
699 | ||
700 | if (!xsd_path) { | |
701 | ret = -LTTNG_ERR_NOMEM; | |
702 | goto end; | |
703 | } | |
dcf266c0 | 704 | |
54e399cb | 705 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
706 | if (!ctx->parser_ctx) { |
707 | ERR("XSD parser context creation failed"); | |
708 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
709 | goto end; | |
710 | } | |
711 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
712 | xml_error_handler, NULL); | |
713 | ||
714 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
715 | if (!ctx->schema) { | |
716 | ERR("XSD parsing failed"); | |
717 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
718 | goto end; | |
719 | } | |
720 | ||
721 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
722 | if (!ctx->schema_validation_ctx) { | |
723 | ERR("XSD validation context creation failed"); | |
724 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
725 | goto end; | |
726 | } | |
727 | ||
728 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
729 | xml_error_handler, NULL); | |
730 | ret = 0; | |
731 | ||
732 | end: | |
733 | if (ret) { | |
734 | fini_session_config_validation_ctx(ctx); | |
735 | } | |
736 | ||
54e399cb | 737 | free(xsd_path); |
dcf266c0 JG |
738 | return ret; |
739 | } | |
740 | ||
741 | static | |
742 | int parse_uint(xmlChar *str, uint64_t *val) | |
743 | { | |
744 | int ret; | |
745 | char *endptr; | |
746 | ||
747 | if (!str || !val) { | |
748 | ret = -1; | |
749 | goto end; | |
750 | } | |
751 | ||
752 | *val = strtoull((const char *) str, &endptr, 10); | |
753 | if (!endptr || *endptr) { | |
754 | ret = -1; | |
755 | } else { | |
756 | ret = 0; | |
757 | } | |
758 | ||
759 | end: | |
760 | return ret; | |
761 | } | |
762 | ||
763 | static | |
764 | int parse_int(xmlChar *str, int64_t *val) | |
765 | { | |
766 | int ret; | |
767 | char *endptr; | |
768 | ||
769 | if (!str || !val) { | |
770 | ret = -1; | |
771 | goto end; | |
772 | } | |
773 | ||
774 | *val = strtoll((const char *) str, &endptr, 10); | |
775 | if (!endptr || *endptr) { | |
776 | ret = -1; | |
777 | } else { | |
778 | ret = 0; | |
779 | } | |
780 | ||
781 | end: | |
782 | return ret; | |
783 | } | |
784 | ||
785 | static | |
786 | int parse_bool(xmlChar *str, int *val) | |
787 | { | |
788 | int ret = 0; | |
789 | ||
790 | if (!str || !val) { | |
791 | ret = -1; | |
792 | goto end; | |
793 | } | |
794 | ||
795 | if (!strcmp((const char *) str, config_xml_true)) { | |
796 | *val = 1; | |
797 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
798 | *val = 0; | |
799 | } else { | |
800 | WARN("Invalid boolean value encoutered (%s).", | |
801 | (const char *) str); | |
802 | ret = -1; | |
803 | } | |
804 | end: | |
805 | return ret; | |
806 | } | |
807 | ||
808 | static | |
809 | int get_domain_type(xmlChar *domain) | |
810 | { | |
811 | int ret; | |
812 | ||
813 | if (!domain) { | |
814 | goto error; | |
815 | } | |
816 | ||
817 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
818 | ret = LTTNG_DOMAIN_KERNEL; | |
819 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
820 | ret = LTTNG_DOMAIN_UST; | |
821 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
822 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
823 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
824 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
825 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
826 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
827 | } else { |
828 | goto error; | |
829 | } | |
830 | ||
831 | return ret; | |
832 | error: | |
833 | return -1; | |
834 | } | |
835 | ||
836 | static | |
837 | int get_buffer_type(xmlChar *buffer_type) | |
838 | { | |
839 | int ret; | |
840 | ||
841 | if (!buffer_type) { | |
842 | goto error; | |
843 | } | |
844 | ||
845 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
846 | ret = LTTNG_BUFFER_GLOBAL; | |
847 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
848 | ret = LTTNG_BUFFER_PER_UID; | |
849 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
850 | ret = LTTNG_BUFFER_PER_PID; | |
851 | } else { | |
852 | goto error; | |
853 | } | |
854 | ||
855 | return ret; | |
856 | error: | |
857 | return -1; | |
858 | } | |
859 | ||
860 | static | |
861 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
862 | { | |
863 | int ret; | |
864 | ||
865 | if (!overwrite_mode) { | |
866 | goto error; | |
867 | } | |
868 | ||
869 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
870 | ret = 1; | |
871 | } else if (!strcmp((char *) overwrite_mode, | |
872 | config_overwrite_mode_discard)) { | |
873 | ret = 0; | |
874 | } else { | |
875 | goto error; | |
876 | } | |
877 | ||
878 | return ret; | |
879 | error: | |
880 | return -1; | |
881 | } | |
882 | ||
883 | static | |
884 | int get_output_type(xmlChar *output_type) | |
885 | { | |
886 | int ret; | |
887 | ||
888 | if (!output_type) { | |
889 | goto error; | |
890 | } | |
891 | ||
892 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
893 | ret = LTTNG_EVENT_MMAP; | |
894 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
895 | ret = LTTNG_EVENT_SPLICE; | |
896 | } else { | |
897 | goto error; | |
898 | } | |
899 | ||
900 | return ret; | |
901 | error: | |
902 | return -1; | |
903 | } | |
904 | ||
905 | static | |
906 | int get_event_type(xmlChar *event_type) | |
907 | { | |
908 | int ret; | |
909 | ||
910 | if (!event_type) { | |
911 | goto error; | |
912 | } | |
913 | ||
914 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
915 | ret = LTTNG_EVENT_ALL; | |
916 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
917 | ret = LTTNG_EVENT_TRACEPOINT; | |
918 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
919 | ret = LTTNG_EVENT_PROBE; | |
920 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
921 | ret = LTTNG_EVENT_FUNCTION; | |
922 | } else if (!strcmp((char *) event_type, | |
923 | config_event_type_function_entry)) { | |
924 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
925 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
926 | ret = LTTNG_EVENT_NOOP; | |
927 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
928 | ret = LTTNG_EVENT_SYSCALL; | |
929 | } else { | |
930 | goto error; | |
931 | } | |
932 | ||
933 | return ret; | |
934 | error: | |
935 | return -1; | |
936 | } | |
937 | ||
938 | static | |
939 | int get_loglevel_type(xmlChar *loglevel_type) | |
940 | { | |
941 | int ret; | |
942 | ||
943 | if (!loglevel_type) { | |
944 | goto error; | |
945 | } | |
946 | ||
947 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
948 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
949 | } else if (!strcmp((char *) loglevel_type, | |
950 | config_loglevel_type_range)) { | |
951 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
952 | } else if (!strcmp((char *) loglevel_type, | |
953 | config_loglevel_type_single)) { | |
954 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
955 | } else { | |
956 | goto error; | |
957 | } | |
958 | ||
959 | return ret; | |
960 | error: | |
961 | return -1; | |
962 | } | |
963 | ||
964 | /* | |
965 | * Return the context type or -1 on error. | |
966 | */ | |
967 | static | |
968 | int get_context_type(xmlChar *context_type) | |
969 | { | |
970 | int ret; | |
971 | ||
972 | if (!context_type) { | |
973 | goto error; | |
974 | } | |
975 | ||
976 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
977 | ret = LTTNG_EVENT_CONTEXT_PID; | |
978 | } else if (!strcmp((char *) context_type, | |
979 | config_event_context_procname)) { | |
980 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
981 | } else if (!strcmp((char *) context_type, | |
982 | config_event_context_prio)) { | |
983 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
984 | } else if (!strcmp((char *) context_type, | |
985 | config_event_context_nice)) { | |
986 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
987 | } else if (!strcmp((char *) context_type, | |
988 | config_event_context_vpid)) { | |
989 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
990 | } else if (!strcmp((char *) context_type, | |
991 | config_event_context_tid)) { | |
992 | ret = LTTNG_EVENT_CONTEXT_TID; | |
993 | } else if (!strcmp((char *) context_type, | |
994 | config_event_context_vtid)) { | |
995 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
996 | } else if (!strcmp((char *) context_type, | |
997 | config_event_context_ppid)) { | |
998 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
999 | } else if (!strcmp((char *) context_type, | |
1000 | config_event_context_vppid)) { | |
1001 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1002 | } else if (!strcmp((char *) context_type, | |
1003 | config_event_context_pthread_id)) { | |
1004 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1005 | } else if (!strcmp((char *) context_type, | |
1006 | config_event_context_hostname)) { | |
1007 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1008 | } else if (!strcmp((char *) context_type, | |
1009 | config_event_context_ip)) { | |
1010 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1011 | } else if (!strcmp((char *) context_type, |
1012 | config_event_context_interruptible)) { | |
1013 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1014 | } else if (!strcmp((char *) context_type, | |
1015 | config_event_context_preemptible)) { | |
1016 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1017 | } else if (!strcmp((char *) context_type, | |
1018 | config_event_context_need_reschedule)) { | |
1019 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1020 | } else if (!strcmp((char *) context_type, | |
1021 | config_event_context_migratable)) { | |
1022 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1023 | } else if (!strcmp((char *) context_type, |
1024 | config_event_context_callstack_user)) { | |
1025 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1026 | } else if (!strcmp((char *) context_type, | |
1027 | config_event_context_callstack_kernel)) { | |
1028 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
dcf266c0 JG |
1029 | } else { |
1030 | goto error; | |
1031 | } | |
1032 | ||
1033 | return ret; | |
1034 | error: | |
1035 | return -1; | |
1036 | } | |
1037 | ||
1038 | static | |
1039 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1040 | { | |
1041 | int ret; | |
1042 | xmlNodePtr node; | |
1043 | ||
1044 | for (node = xmlFirstElementChild(domain_node); node; | |
1045 | node = xmlNextElementSibling(node)) { | |
1046 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1047 | /* domain type */ | |
1048 | xmlChar *node_content = xmlNodeGetContent(node); | |
1049 | if (!node_content) { | |
1050 | ret = -LTTNG_ERR_NOMEM; | |
1051 | goto end; | |
1052 | } | |
1053 | ||
1054 | ret = get_domain_type(node_content); | |
1055 | free(node_content); | |
1056 | if (ret < 0) { | |
1057 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1058 | goto end; | |
1059 | } | |
1060 | ||
1061 | domain->type = ret; | |
1062 | } else if (!strcmp((const char *) node->name, | |
1063 | config_element_buffer_type)) { | |
1064 | /* buffer type */ | |
1065 | xmlChar *node_content = xmlNodeGetContent(node); | |
1066 | if (!node_content) { | |
1067 | ret = -LTTNG_ERR_NOMEM; | |
1068 | goto end; | |
1069 | } | |
1070 | ||
1071 | ret = get_buffer_type(node_content); | |
1072 | free(node_content); | |
1073 | if (ret < 0) { | |
1074 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1075 | goto end; | |
1076 | } | |
1077 | ||
1078 | domain->buf_type = ret; | |
1079 | } | |
1080 | } | |
1081 | ret = 0; | |
1082 | end: | |
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | static | |
1087 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1088 | char **data_uri) | |
1089 | { | |
1090 | xmlNodePtr node; | |
1091 | ||
1092 | for (node = xmlFirstElementChild(net_output_node); node; | |
1093 | node = xmlNextElementSibling(node)) { | |
1094 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1095 | /* control_uri */ | |
1096 | *control_uri = (char *) xmlNodeGetContent(node); | |
1097 | if (!*control_uri) { | |
1098 | break; | |
1099 | } | |
1100 | } else { | |
1101 | /* data_uri */ | |
1102 | *data_uri = (char *) xmlNodeGetContent(node); | |
1103 | if (!*data_uri) { | |
1104 | break; | |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1110 | } | |
1111 | ||
1112 | static | |
1113 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1114 | struct consumer_output *output) | |
1115 | { | |
1116 | int ret; | |
1117 | xmlNodePtr node; | |
1118 | ||
1119 | assert(output); | |
1120 | ||
1121 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1122 | node = xmlNextElementSibling(node)) { | |
1123 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1124 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1125 | ||
1126 | /* enabled */ | |
1127 | if (!enabled_str) { | |
1128 | ret = -LTTNG_ERR_NOMEM; | |
1129 | goto end; | |
1130 | } | |
1131 | ||
1132 | ret = parse_bool(enabled_str, &output->enabled); | |
1133 | free(enabled_str); | |
1134 | if (ret) { | |
1135 | goto end; | |
1136 | } | |
1137 | } else { | |
1138 | xmlNodePtr output_type_node; | |
1139 | ||
1140 | /* destination */ | |
1141 | output_type_node = xmlFirstElementChild(node); | |
1142 | if (!output_type_node) { | |
1143 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1144 | goto end; | |
1145 | } | |
1146 | ||
1147 | if (!strcmp((const char *) output_type_node->name, | |
1148 | config_element_path)) { | |
1149 | /* path */ | |
1150 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1151 | if (!output->path) { | |
1152 | ret = -LTTNG_ERR_NOMEM; | |
1153 | goto end; | |
1154 | } | |
1155 | } else { | |
1156 | /* net_output */ | |
1157 | ret = get_net_output_uris(output_type_node, | |
1158 | &output->control_uri, &output->data_uri); | |
1159 | if (ret) { | |
1160 | goto end; | |
1161 | } | |
1162 | } | |
1163 | } | |
1164 | } | |
1165 | ret = 0; | |
1166 | ||
1167 | end: | |
1168 | if (ret) { | |
1169 | free(output->path); | |
1170 | free(output->control_uri); | |
1171 | free(output->data_uri); | |
1172 | memset(output, 0, sizeof(struct consumer_output)); | |
1173 | } | |
1174 | return ret; | |
1175 | } | |
1176 | ||
1177 | static | |
95681498 JG |
1178 | int create_session_net_output(const char *name, const char *control_uri, |
1179 | const char *data_uri) | |
dcf266c0 JG |
1180 | { |
1181 | int ret; | |
1182 | struct lttng_handle *handle; | |
1183 | const char *uri = NULL; | |
1184 | ||
1185 | assert(name); | |
dcf266c0 | 1186 | |
95681498 | 1187 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1188 | if (!handle) { |
1189 | ret = -LTTNG_ERR_NOMEM; | |
1190 | goto end; | |
1191 | } | |
1192 | ||
1193 | if (!control_uri || !data_uri) { | |
1194 | uri = control_uri ? control_uri : data_uri; | |
1195 | control_uri = uri; | |
1196 | data_uri = uri; | |
1197 | } | |
1198 | ||
1199 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1200 | lttng_destroy_handle(handle); | |
1201 | end: | |
1202 | return ret; | |
1203 | } | |
1204 | ||
1205 | static | |
1b08cbce JR |
1206 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1207 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1208 | { |
1209 | int ret; | |
1210 | xmlNodePtr node = NULL; | |
1211 | xmlNodePtr snapshot_output_list_node; | |
1212 | xmlNodePtr snapshot_output_node; | |
1213 | ||
1214 | assert(session_name); | |
1215 | ||
1216 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1217 | if (ret) { | |
1218 | goto end; | |
1219 | } | |
1220 | ||
1221 | if (!output_node) { | |
1222 | goto end; | |
1223 | } | |
1224 | ||
1225 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1226 | ||
1227 | /* Parse and create snapshot outputs */ | |
1228 | ||
1229 | for (snapshot_output_node = | |
1230 | xmlFirstElementChild(snapshot_output_list_node); | |
1231 | snapshot_output_node; snapshot_output_node = | |
1232 | xmlNextElementSibling(snapshot_output_node)) { | |
1233 | char *name = NULL; | |
1234 | uint64_t max_size = UINT64_MAX; | |
1235 | struct consumer_output output = { 0 }; | |
1236 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1237 | const char *control_uri = NULL; |
1238 | const char *data_uri = NULL; | |
1239 | const char *path = NULL; | |
dcf266c0 JG |
1240 | |
1241 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1242 | node = xmlNextElementSibling(node)) { | |
1243 | if (!strcmp((const char *) node->name, | |
1244 | config_element_name)) { | |
1245 | /* name */ | |
1246 | name = (char *) xmlNodeGetContent(node); | |
1247 | if (!name) { | |
1248 | ret = -LTTNG_ERR_NOMEM; | |
1249 | goto error_snapshot_output; | |
1250 | } | |
1251 | } else if (!strcmp((const char *) node->name, | |
1252 | config_element_max_size)) { | |
1253 | xmlChar *content = xmlNodeGetContent(node); | |
1254 | ||
1255 | /* max_size */ | |
1256 | if (!content) { | |
1257 | ret = -LTTNG_ERR_NOMEM; | |
1258 | goto error_snapshot_output; | |
1259 | } | |
1260 | ret = parse_uint(content, &max_size); | |
1261 | free(content); | |
1262 | if (ret) { | |
1263 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1264 | goto error_snapshot_output; | |
1265 | } | |
1266 | } else { | |
1267 | /* consumer_output */ | |
1268 | ret = process_consumer_output(node, &output); | |
1269 | if (ret) { | |
1270 | goto error_snapshot_output; | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
21a3f144 JR |
1275 | control_uri = output.control_uri; |
1276 | data_uri = output.data_uri; | |
1277 | path = output.path; | |
1278 | ||
1b08cbce JR |
1279 | if (overrides) { |
1280 | if (overrides->path_url) { | |
1b08cbce | 1281 | path = overrides->path_url; |
21a3f144 JR |
1282 | /* Control/data_uri are null */ |
1283 | control_uri = NULL; | |
1284 | data_uri = NULL; | |
1b08cbce JR |
1285 | } else { |
1286 | if (overrides->ctrl_url) { | |
1b08cbce | 1287 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1288 | /* path is null */ |
1289 | path = NULL; | |
1b08cbce JR |
1290 | } |
1291 | if (overrides->data_url) { | |
1b08cbce | 1292 | data_uri = overrides->data_url; |
21a3f144 JR |
1293 | /* path is null */ |
1294 | path = NULL; | |
1b08cbce JR |
1295 | } |
1296 | } | |
1b08cbce JR |
1297 | } |
1298 | ||
dcf266c0 JG |
1299 | snapshot_output = lttng_snapshot_output_create(); |
1300 | if (!snapshot_output) { | |
1301 | ret = -LTTNG_ERR_NOMEM; | |
1302 | goto error_snapshot_output; | |
1303 | } | |
1304 | ||
1305 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1306 | if (ret) { | |
1307 | goto error_snapshot_output; | |
1308 | } | |
1309 | ||
1310 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1311 | if (ret) { | |
1312 | goto error_snapshot_output; | |
1313 | } | |
1314 | ||
1b08cbce JR |
1315 | if (path) { |
1316 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1317 | snapshot_output); |
1318 | if (ret) { | |
1319 | goto error_snapshot_output; | |
1320 | } | |
1321 | } else { | |
1b08cbce JR |
1322 | if (control_uri) { |
1323 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1324 | snapshot_output); |
1325 | if (ret) { | |
1326 | goto error_snapshot_output; | |
1327 | } | |
1328 | } | |
1329 | ||
1b08cbce JR |
1330 | if (data_uri) { |
1331 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1332 | snapshot_output); |
1333 | if (ret) { | |
1334 | goto error_snapshot_output; | |
1335 | } | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1340 | error_snapshot_output: | |
1341 | free(name); | |
1342 | free(output.path); | |
1343 | free(output.control_uri); | |
1344 | free(output.data_uri); | |
1345 | lttng_snapshot_output_destroy(snapshot_output); | |
1346 | if (ret) { | |
1347 | goto end; | |
1348 | } | |
1349 | } | |
1350 | end: | |
1351 | return ret; | |
1352 | } | |
1353 | ||
1354 | static | |
1355 | int create_session(const char *name, | |
dcf266c0 | 1356 | xmlNodePtr output_node, |
1b08cbce JR |
1357 | uint64_t live_timer_interval, |
1358 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1359 | { |
1360 | int ret; | |
1361 | struct consumer_output output = { 0 }; | |
1362 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1363 | const char *control_uri = NULL; |
1364 | const char *data_uri = NULL; | |
1365 | const char *path = NULL; | |
dcf266c0 JG |
1366 | |
1367 | assert(name); | |
dcf266c0 JG |
1368 | |
1369 | if (output_node) { | |
1370 | consumer_output_node = xmlFirstElementChild(output_node); | |
1371 | if (!consumer_output_node) { | |
1372 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1373 | goto end; | |
1374 | } | |
1375 | ||
1376 | if (strcmp((const char *) consumer_output_node->name, | |
1377 | config_element_consumer_output)) { | |
1378 | WARN("Invalid output type, expected %s node", | |
1379 | config_element_consumer_output); | |
1380 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1381 | goto end; | |
1382 | } | |
1383 | ||
1384 | ret = process_consumer_output(consumer_output_node, &output); | |
1385 | if (ret) { | |
1386 | goto end; | |
1387 | } | |
1388 | } | |
1389 | ||
21a3f144 JR |
1390 | control_uri = output.control_uri; |
1391 | data_uri = output.data_uri; | |
1392 | path = output.path; | |
1393 | ||
1b08cbce JR |
1394 | /* Check for override and apply them */ |
1395 | if (overrides) { | |
1396 | if (overrides->path_url) { | |
1b08cbce | 1397 | path = overrides->path_url; |
21a3f144 JR |
1398 | /* control/data_uri are null */; |
1399 | control_uri = NULL; | |
1400 | data_uri = NULL; | |
1b08cbce JR |
1401 | } else { |
1402 | if (overrides->ctrl_url) { | |
1b08cbce | 1403 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1404 | /* path is null */ |
1405 | path = NULL; | |
1b08cbce JR |
1406 | } |
1407 | if (overrides->data_url) { | |
1b08cbce | 1408 | data_uri = overrides->data_url; |
21a3f144 JR |
1409 | /* path is null */ |
1410 | path = NULL; | |
1b08cbce JR |
1411 | } |
1412 | } | |
1b08cbce JR |
1413 | } |
1414 | ||
21a3f144 | 1415 | |
1b08cbce | 1416 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1417 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1418 | goto end; | |
1419 | } | |
1420 | ||
1b08cbce | 1421 | if (control_uri || data_uri) { |
dcf266c0 JG |
1422 | /* network destination */ |
1423 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1424 | /* |
1425 | * URLs are provided for sure since the test above make sure that | |
1426 | * with a live timer the data and control URIs are provided. So, | |
1427 | * NULL is passed here and will be set right after. | |
1428 | */ | |
1429 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1430 | } else { |
1431 | ret = lttng_create_session(name, NULL); | |
1432 | } | |
1433 | if (ret) { | |
1434 | goto end; | |
1435 | } | |
1436 | ||
1b08cbce | 1437 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1438 | if (ret) { |
1439 | goto end; | |
dcf266c0 | 1440 | } |
95681498 | 1441 | |
dcf266c0 JG |
1442 | } else { |
1443 | /* either local output or no output */ | |
1b08cbce | 1444 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1445 | if (ret) { |
1446 | goto end; | |
1447 | } | |
1448 | } | |
1449 | end: | |
1450 | free(output.path); | |
1451 | free(output.control_uri); | |
1452 | free(output.data_uri); | |
1453 | return ret; | |
1454 | } | |
1455 | static | |
1456 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1457 | struct lttng_event_probe_attr *attr) | |
1458 | { | |
1459 | int ret; | |
1460 | ||
1461 | assert(probe_attribute_node); | |
1462 | assert(attr); | |
1463 | ||
1464 | if (!strcmp((const char *) probe_attribute_node->name, | |
1465 | config_element_address)) { | |
1466 | xmlChar *content; | |
1467 | uint64_t addr = 0; | |
1468 | ||
1469 | /* addr */ | |
1470 | content = xmlNodeGetContent(probe_attribute_node); | |
1471 | if (!content) { | |
1472 | ret = -LTTNG_ERR_NOMEM; | |
1473 | goto end; | |
1474 | } | |
1475 | ||
1476 | ret = parse_uint(content, &addr); | |
1477 | free(content); | |
1478 | if (ret) { | |
1479 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1480 | goto end; | |
1481 | } | |
1482 | ||
1483 | attr->addr = addr; | |
1484 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1485 | config_element_offset)) { | |
1486 | xmlChar *content; | |
1487 | uint64_t offset = 0; | |
1488 | ||
1489 | /* offset */ | |
1490 | content = xmlNodeGetContent(probe_attribute_node); | |
1491 | if (!content) { | |
1492 | ret = -LTTNG_ERR_NOMEM; | |
1493 | goto end; | |
1494 | } | |
1495 | ||
1496 | ret = parse_uint(content, &offset); | |
1497 | free(content); | |
1498 | if (ret) { | |
1499 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1500 | goto end; | |
1501 | } | |
1502 | ||
1503 | attr->offset = offset; | |
1504 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1505 | config_element_symbol_name)) { | |
1506 | xmlChar *content; | |
dcf266c0 JG |
1507 | |
1508 | /* symbol_name */ | |
1509 | content = xmlNodeGetContent(probe_attribute_node); | |
1510 | if (!content) { | |
1511 | ret = -LTTNG_ERR_NOMEM; | |
1512 | goto end; | |
1513 | } | |
1514 | ||
d2e67842 JG |
1515 | ret = lttng_strncpy(attr->symbol_name, |
1516 | (const char *) content, | |
1517 | LTTNG_SYMBOL_NAME_LEN); | |
1518 | if (ret == -1) { | |
1519 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1520 | (const char *) content, | |
1521 | strlen((const char *) content), | |
1522 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1523 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1524 | free(content); | |
1525 | goto end; | |
1526 | } | |
dcf266c0 JG |
1527 | free(content); |
1528 | } | |
1529 | ret = 0; | |
1530 | end: | |
1531 | return ret; | |
1532 | } | |
1533 | ||
1534 | static | |
1535 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1536 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1537 | { |
d7b645e2 | 1538 | int ret = 0, i; |
dcf266c0 JG |
1539 | xmlNodePtr node; |
1540 | struct lttng_event event; | |
1541 | char **exclusions = NULL; | |
1542 | unsigned long exclusion_count = 0; | |
1543 | char *filter_expression = NULL; | |
1544 | ||
1545 | assert(event_node); | |
1546 | assert(handle); | |
1547 | assert(channel_name); | |
1548 | ||
1549 | memset(&event, 0, sizeof(event)); | |
1550 | ||
f40eba3d JG |
1551 | /* Initialize default log level which varies by domain */ |
1552 | switch (handle->domain.type) | |
1553 | { | |
1554 | case LTTNG_DOMAIN_JUL: | |
1555 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1556 | break; | |
1557 | case LTTNG_DOMAIN_LOG4J: | |
1558 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1559 | break; | |
1560 | case LTTNG_DOMAIN_PYTHON: | |
1561 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1562 | break; | |
1563 | case LTTNG_DOMAIN_UST: | |
1564 | case LTTNG_DOMAIN_KERNEL: | |
1565 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1566 | break; | |
1567 | default: | |
1568 | assert(0); | |
1569 | } | |
1570 | ||
dcf266c0 JG |
1571 | for (node = xmlFirstElementChild(event_node); node; |
1572 | node = xmlNextElementSibling(node)) { | |
1573 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1574 | xmlChar *content; | |
dcf266c0 JG |
1575 | |
1576 | /* name */ | |
1577 | content = xmlNodeGetContent(node); | |
1578 | if (!content) { | |
1579 | ret = -LTTNG_ERR_NOMEM; | |
1580 | goto end; | |
1581 | } | |
1582 | ||
d2e67842 JG |
1583 | ret = lttng_strncpy(event.name, |
1584 | (const char *) content, | |
1585 | LTTNG_SYMBOL_NAME_LEN); | |
1586 | if (ret == -1) { | |
1587 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1588 | (const char *) content, | |
1589 | strlen((const char *) content), | |
1590 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1591 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1592 | free(content); | |
1593 | goto end; | |
1594 | } | |
dcf266c0 JG |
1595 | free(content); |
1596 | } else if (!strcmp((const char *) node->name, | |
1597 | config_element_enabled)) { | |
1598 | xmlChar *content = xmlNodeGetContent(node); | |
1599 | ||
1600 | /* enabled */ | |
1601 | if (!content) { | |
1602 | ret = -LTTNG_ERR_NOMEM; | |
1603 | goto end; | |
1604 | } | |
1605 | ||
1606 | ret = parse_bool(content, &event.enabled); | |
1607 | free(content); | |
1608 | if (ret) { | |
1609 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1610 | goto end; | |
1611 | } | |
1612 | } else if (!strcmp((const char *) node->name, | |
1613 | config_element_type)) { | |
1614 | xmlChar *content = xmlNodeGetContent(node); | |
1615 | ||
1616 | /* type */ | |
1617 | if (!content) { | |
1618 | ret = -LTTNG_ERR_NOMEM; | |
1619 | goto end; | |
1620 | } | |
1621 | ||
1622 | ret = get_event_type(content); | |
1623 | free(content); | |
1624 | if (ret < 0) { | |
1625 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1626 | goto end; | |
1627 | } | |
1628 | ||
1629 | event.type = ret; | |
1630 | } else if (!strcmp((const char *) node->name, | |
1631 | config_element_loglevel_type)) { | |
1632 | xmlChar *content = xmlNodeGetContent(node); | |
1633 | ||
1634 | /* loglevel_type */ | |
1635 | if (!content) { | |
1636 | ret = -LTTNG_ERR_NOMEM; | |
1637 | goto end; | |
1638 | } | |
1639 | ||
1640 | ret = get_loglevel_type(content); | |
1641 | free(content); | |
1642 | if (ret < 0) { | |
1643 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1644 | goto end; | |
1645 | } | |
1646 | ||
1647 | event.loglevel_type = ret; | |
1648 | } else if (!strcmp((const char *) node->name, | |
1649 | config_element_loglevel)) { | |
1650 | xmlChar *content; | |
1651 | int64_t loglevel = 0; | |
1652 | ||
1653 | /* loglevel */ | |
1654 | content = xmlNodeGetContent(node); | |
1655 | if (!content) { | |
1656 | ret = -LTTNG_ERR_NOMEM; | |
1657 | goto end; | |
1658 | } | |
1659 | ||
1660 | ret = parse_int(content, &loglevel); | |
1661 | free(content); | |
1662 | if (ret) { | |
1663 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1664 | goto end; | |
1665 | } | |
1666 | ||
1667 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1668 | WARN("loglevel out of range."); | |
1669 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1670 | goto end; | |
1671 | } | |
1672 | ||
1673 | event.loglevel = loglevel; | |
1674 | } else if (!strcmp((const char *) node->name, | |
1675 | config_element_filter)) { | |
1676 | xmlChar *content = | |
1677 | xmlNodeGetContent(node); | |
1678 | ||
1679 | /* filter */ | |
1680 | if (!content) { | |
1681 | ret = -LTTNG_ERR_NOMEM; | |
1682 | goto end; | |
1683 | } | |
1684 | ||
02d8ac3d | 1685 | free(filter_expression); |
dcf266c0 JG |
1686 | filter_expression = strdup((char *) content); |
1687 | free(content); | |
1688 | if (!filter_expression) { | |
1689 | ret = -LTTNG_ERR_NOMEM; | |
1690 | goto end; | |
1691 | } | |
1692 | } else if (!strcmp((const char *) node->name, | |
1693 | config_element_exclusions)) { | |
1694 | xmlNodePtr exclusion_node; | |
1695 | int exclusion_index = 0; | |
1696 | ||
1697 | /* exclusions */ | |
1698 | if (exclusions) { | |
1699 | /* | |
1700 | * Exclusions has already been initialized, | |
1701 | * invalid file. | |
1702 | */ | |
1703 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1704 | goto end; | |
1705 | } | |
1706 | ||
1707 | exclusion_count = xmlChildElementCount(node); | |
1708 | if (!exclusion_count) { | |
1709 | continue; | |
1710 | } | |
1711 | ||
1712 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1713 | if (!exclusions) { | |
1714 | exclusion_count = 0; | |
1715 | ret = -LTTNG_ERR_NOMEM; | |
1716 | goto end; | |
1717 | } | |
1718 | ||
1719 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1720 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1721 | xmlChar *content = | |
1722 | xmlNodeGetContent(exclusion_node); | |
1723 | ||
1724 | if (!content) { | |
1725 | ret = -LTTNG_ERR_NOMEM; | |
1726 | goto end; | |
1727 | } | |
1728 | ||
1729 | exclusions[exclusion_index] = strdup((const char *) content); | |
1730 | free(content); | |
1731 | if (!exclusions[exclusion_index]) { | |
1732 | ret = -LTTNG_ERR_NOMEM; | |
1733 | goto end; | |
1734 | } | |
1735 | exclusion_index++; | |
1736 | } | |
1737 | ||
1738 | event.exclusion = 1; | |
1739 | } else if (!strcmp((const char *) node->name, | |
1740 | config_element_attributes)) { | |
1741 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1742 | ||
1743 | /* attributes */ | |
1744 | if (!attribute_node) { | |
1745 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1746 | goto end; | |
1747 | } | |
1748 | ||
1749 | if (!strcmp((const char *) node->name, | |
1750 | config_element_probe_attributes)) { | |
1751 | xmlNodePtr probe_attribute_node; | |
1752 | ||
1753 | /* probe_attributes */ | |
1754 | for (probe_attribute_node = | |
1755 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1756 | probe_attribute_node = xmlNextElementSibling( | |
1757 | probe_attribute_node)) { | |
1758 | ||
1759 | ret = process_probe_attribute_node(probe_attribute_node, | |
1760 | &event.attr.probe); | |
1761 | if (ret) { | |
1762 | goto end; | |
1763 | } | |
1764 | } | |
1765 | } else { | |
1766 | size_t sym_len; | |
1767 | xmlChar *content; | |
1768 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1769 | ||
1770 | /* function_attributes */ | |
1771 | content = xmlNodeGetContent(symbol_node); | |
1772 | if (!content) { | |
1773 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1774 | goto end; | |
1775 | } | |
1776 | ||
1777 | sym_len = strlen((char *) content); | |
1778 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1779 | WARN("Function name too long."); | |
1780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1781 | free(content); | |
1782 | goto end; | |
1783 | } | |
1784 | ||
d2e67842 JG |
1785 | ret = lttng_strncpy( |
1786 | event.attr.ftrace.symbol_name, | |
1787 | (char *) content, sym_len); | |
1788 | if (ret == -1) { | |
1789 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1790 | free(content); | |
1791 | goto end; | |
1792 | } | |
dcf266c0 JG |
1793 | free(content); |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | ||
d7b645e2 JR |
1798 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1799 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1800 | filter_expression, exclusion_count, exclusions); | |
1801 | if (ret < 0) { | |
1802 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1803 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1804 | goto end; | |
1805 | } | |
065321e9 | 1806 | } |
d2e67842 | 1807 | ret = 0; |
dcf266c0 JG |
1808 | end: |
1809 | for (i = 0; i < exclusion_count; i++) { | |
1810 | free(exclusions[i]); | |
1811 | } | |
1812 | ||
1813 | free(exclusions); | |
1814 | free(filter_expression); | |
1815 | return ret; | |
1816 | } | |
1817 | ||
1818 | static | |
1819 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1820 | const char *channel_name) | |
1821 | { | |
1822 | int ret = 0; | |
d7b645e2 | 1823 | struct lttng_event event; |
dcf266c0 JG |
1824 | xmlNodePtr node; |
1825 | ||
1826 | assert(events_node); | |
1827 | assert(handle); | |
1828 | assert(channel_name); | |
1829 | ||
1830 | for (node = xmlFirstElementChild(events_node); node; | |
1831 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 1832 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1833 | if (ret) { |
1834 | goto end; | |
1835 | } | |
1836 | } | |
d7b645e2 JR |
1837 | |
1838 | /* | |
1839 | * Disable all events to enable only the necessary events. | |
1840 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1841 | * force this approach. | |
1842 | */ | |
1843 | memset(&event, 0, sizeof(event)); | |
1844 | event.loglevel = -1; | |
1845 | event.type = LTTNG_EVENT_ALL; | |
1846 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1847 | if (ret) { | |
1848 | goto end; | |
1849 | } | |
1850 | ||
1851 | for (node = xmlFirstElementChild(events_node); node; | |
1852 | node = xmlNextElementSibling(node)) { | |
1853 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1854 | if (ret) { | |
1855 | goto end; | |
1856 | } | |
1857 | } | |
1858 | ||
dcf266c0 JG |
1859 | end: |
1860 | return ret; | |
1861 | } | |
1862 | ||
1863 | static | |
1864 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1865 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1866 | xmlNodePtr *events_node) | |
1867 | { | |
1868 | int ret; | |
1869 | ||
1870 | assert(attr_node); | |
1871 | assert(channel); | |
1872 | assert(contexts_node); | |
1873 | assert(events_node); | |
1874 | ||
1875 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1876 | xmlChar *content; | |
dcf266c0 JG |
1877 | |
1878 | /* name */ | |
1879 | content = xmlNodeGetContent(attr_node); | |
1880 | if (!content) { | |
1881 | ret = -LTTNG_ERR_NOMEM; | |
1882 | goto end; | |
1883 | } | |
1884 | ||
d2e67842 JG |
1885 | ret = lttng_strncpy(channel->name, |
1886 | (const char *) content, | |
1887 | LTTNG_SYMBOL_NAME_LEN); | |
1888 | if (ret == -1) { | |
1889 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1890 | (const char *) content, | |
1891 | strlen((const char *) content), | |
1892 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1893 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1894 | free(content); | |
1895 | goto end; | |
1896 | } | |
dcf266c0 JG |
1897 | free(content); |
1898 | } else if (!strcmp((const char *) attr_node->name, | |
1899 | config_element_enabled)) { | |
1900 | xmlChar *content; | |
1901 | int enabled; | |
1902 | ||
1903 | /* enabled */ | |
1904 | content = xmlNodeGetContent(attr_node); | |
1905 | if (!content) { | |
1906 | ret = -LTTNG_ERR_NOMEM; | |
1907 | goto end; | |
1908 | } | |
1909 | ||
1910 | ret = parse_bool(content, &enabled); | |
1911 | free(content); | |
1912 | if (ret) { | |
1913 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1914 | goto end; | |
1915 | } | |
1916 | ||
1917 | channel->enabled = enabled; | |
1918 | } else if (!strcmp((const char *) attr_node->name, | |
1919 | config_element_overwrite_mode)) { | |
1920 | xmlChar *content; | |
1921 | ||
1922 | /* overwrite_mode */ | |
1923 | content = xmlNodeGetContent(attr_node); | |
1924 | if (!content) { | |
1925 | ret = -LTTNG_ERR_NOMEM; | |
1926 | goto end; | |
1927 | } | |
1928 | ||
1929 | ret = get_overwrite_mode(content); | |
1930 | free(content); | |
1931 | if (ret < 0) { | |
1932 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1933 | goto end; | |
1934 | } | |
1935 | ||
1936 | channel->attr.overwrite = ret; | |
1937 | } else if (!strcmp((const char *) attr_node->name, | |
1938 | config_element_subbuf_size)) { | |
1939 | xmlChar *content; | |
1940 | ||
1941 | /* subbuffer_size */ | |
1942 | content = xmlNodeGetContent(attr_node); | |
1943 | if (!content) { | |
1944 | ret = -LTTNG_ERR_NOMEM; | |
1945 | goto end; | |
1946 | } | |
1947 | ||
1948 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1949 | free(content); | |
1950 | if (ret) { | |
1951 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1952 | goto end; | |
1953 | } | |
1954 | } else if (!strcmp((const char *) attr_node->name, | |
1955 | config_element_num_subbuf)) { | |
1956 | xmlChar *content; | |
1957 | ||
1958 | /* subbuffer_count */ | |
1959 | content = xmlNodeGetContent(attr_node); | |
1960 | if (!content) { | |
1961 | ret = -LTTNG_ERR_NOMEM; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
1965 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1966 | free(content); | |
1967 | if (ret) { | |
1968 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1969 | goto end; | |
1970 | } | |
1971 | } else if (!strcmp((const char *) attr_node->name, | |
1972 | config_element_switch_timer_interval)) { | |
1973 | xmlChar *content; | |
1974 | uint64_t switch_timer_interval = 0; | |
1975 | ||
1976 | /* switch_timer_interval */ | |
1977 | content = xmlNodeGetContent(attr_node); | |
1978 | if (!content) { | |
1979 | ret = -LTTNG_ERR_NOMEM; | |
1980 | goto end; | |
1981 | } | |
1982 | ||
1983 | ret = parse_uint(content, &switch_timer_interval); | |
1984 | free(content); | |
1985 | if (ret) { | |
1986 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1987 | goto end; | |
1988 | } | |
1989 | ||
1990 | if (switch_timer_interval > UINT_MAX) { | |
1991 | WARN("switch_timer_interval out of range."); | |
1992 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1993 | goto end; | |
1994 | } | |
1995 | ||
1996 | channel->attr.switch_timer_interval = | |
1997 | switch_timer_interval; | |
1998 | } else if (!strcmp((const char *) attr_node->name, | |
1999 | config_element_read_timer_interval)) { | |
2000 | xmlChar *content; | |
2001 | uint64_t read_timer_interval = 0; | |
2002 | ||
2003 | /* read_timer_interval */ | |
2004 | content = xmlNodeGetContent(attr_node); | |
2005 | if (!content) { | |
2006 | ret = -LTTNG_ERR_NOMEM; | |
2007 | goto end; | |
2008 | } | |
2009 | ||
2010 | ret = parse_uint(content, &read_timer_interval); | |
2011 | free(content); | |
2012 | if (ret) { | |
2013 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2014 | goto end; | |
2015 | } | |
2016 | ||
2017 | if (read_timer_interval > UINT_MAX) { | |
2018 | WARN("read_timer_interval out of range."); | |
2019 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2020 | goto end; | |
2021 | } | |
2022 | ||
2023 | channel->attr.read_timer_interval = | |
2024 | read_timer_interval; | |
2025 | } else if (!strcmp((const char *) attr_node->name, | |
2026 | config_element_output_type)) { | |
2027 | xmlChar *content; | |
2028 | ||
2029 | /* output_type */ | |
2030 | content = xmlNodeGetContent(attr_node); | |
2031 | if (!content) { | |
2032 | ret = -LTTNG_ERR_NOMEM; | |
2033 | goto end; | |
2034 | } | |
2035 | ||
2036 | ret = get_output_type(content); | |
2037 | free(content); | |
2038 | if (ret < 0) { | |
2039 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2040 | goto end; | |
2041 | } | |
2042 | ||
2043 | channel->attr.output = ret; | |
2044 | } else if (!strcmp((const char *) attr_node->name, | |
2045 | config_element_tracefile_size)) { | |
2046 | xmlChar *content; | |
2047 | ||
2048 | /* tracefile_size */ | |
2049 | content = xmlNodeGetContent(attr_node); | |
2050 | if (!content) { | |
2051 | ret = -LTTNG_ERR_NOMEM; | |
2052 | goto end; | |
2053 | } | |
2054 | ||
2055 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2056 | free(content); | |
2057 | if (ret) { | |
2058 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2059 | goto end; | |
2060 | } | |
2061 | } else if (!strcmp((const char *) attr_node->name, | |
2062 | config_element_tracefile_count)) { | |
2063 | xmlChar *content; | |
2064 | ||
2065 | /* tracefile_count */ | |
2066 | content = xmlNodeGetContent(attr_node); | |
2067 | if (!content) { | |
2068 | ret = -LTTNG_ERR_NOMEM; | |
2069 | goto end; | |
2070 | } | |
2071 | ||
2072 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2073 | free(content); | |
2074 | if (ret) { | |
2075 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2076 | goto end; | |
2077 | } | |
2078 | } else if (!strcmp((const char *) attr_node->name, | |
2079 | config_element_live_timer_interval)) { | |
2080 | xmlChar *content; | |
2081 | uint64_t live_timer_interval = 0; | |
2082 | ||
2083 | /* live_timer_interval */ | |
2084 | content = xmlNodeGetContent(attr_node); | |
2085 | if (!content) { | |
2086 | ret = -LTTNG_ERR_NOMEM; | |
2087 | goto end; | |
2088 | } | |
2089 | ||
2090 | ret = parse_uint(content, &live_timer_interval); | |
2091 | free(content); | |
2092 | if (ret) { | |
2093 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2094 | goto end; | |
2095 | } | |
2096 | ||
2097 | if (live_timer_interval > UINT_MAX) { | |
2098 | WARN("live_timer_interval out of range."); | |
2099 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2100 | goto end; | |
2101 | } | |
2102 | ||
2103 | channel->attr.live_timer_interval = | |
2104 | live_timer_interval; | |
4fc2b126 JR |
2105 | } else if (!strcmp((const char *) attr_node->name, |
2106 | config_element_monitor_timer_interval)) { | |
2107 | xmlChar *content; | |
2108 | uint64_t monitor_timer_interval = 0; | |
2109 | ||
2110 | /* monitor_timer_interval */ | |
2111 | content = xmlNodeGetContent(attr_node); | |
2112 | if (!content) { | |
2113 | ret = -LTTNG_ERR_NOMEM; | |
2114 | goto end; | |
2115 | } | |
2116 | ||
2117 | ret = parse_uint(content, &monitor_timer_interval); | |
2118 | free(content); | |
2119 | if (ret) { | |
2120 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2121 | goto end; | |
2122 | } | |
2123 | ||
2124 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2125 | monitor_timer_interval); | |
2126 | if (ret) { | |
2127 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2128 | goto end; | |
2129 | } | |
275472aa JR |
2130 | } else if (!strcmp((const char *) attr_node->name, |
2131 | config_element_blocking_timeout)) { | |
2132 | xmlChar *content; | |
2133 | int64_t blocking_timeout = 0; | |
2134 | ||
2135 | /* blocking_timeout */ | |
2136 | content = xmlNodeGetContent(attr_node); | |
2137 | if (!content) { | |
2138 | ret = -LTTNG_ERR_NOMEM; | |
2139 | goto end; | |
2140 | } | |
2141 | ||
2142 | ret = parse_int(content, &blocking_timeout); | |
2143 | free(content); | |
2144 | if (ret) { | |
2145 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2146 | goto end; | |
2147 | } | |
2148 | ||
2149 | ret = lttng_channel_set_blocking_timeout(channel, | |
2150 | blocking_timeout); | |
2151 | if (ret) { | |
2152 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2153 | goto end; | |
2154 | } | |
dcf266c0 JG |
2155 | } else if (!strcmp((const char *) attr_node->name, |
2156 | config_element_events)) { | |
2157 | /* events */ | |
2158 | *events_node = attr_node; | |
2159 | } else { | |
2160 | /* contexts */ | |
2161 | *contexts_node = attr_node; | |
2162 | } | |
2163 | ret = 0; | |
2164 | end: | |
2165 | return ret; | |
2166 | } | |
2167 | ||
2168 | static | |
2169 | int process_context_node(xmlNodePtr context_node, | |
2170 | struct lttng_handle *handle, const char *channel_name) | |
2171 | { | |
2172 | int ret; | |
2173 | struct lttng_event_context context; | |
2174 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2175 | ||
2176 | assert(handle); | |
2177 | assert(channel_name); | |
2178 | ||
2179 | if (!context_child_node) { | |
2180 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2181 | goto end; | |
2182 | } | |
2183 | ||
2184 | memset(&context, 0, sizeof(context)); | |
2185 | ||
2186 | if (!strcmp((const char *) context_child_node->name, | |
2187 | config_element_type)) { | |
2188 | /* type */ | |
2189 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2190 | |
dcf266c0 JG |
2191 | if (!content) { |
2192 | ret = -LTTNG_ERR_NOMEM; | |
2193 | goto end; | |
2194 | } | |
2195 | ||
2196 | ret = get_context_type(content); | |
2197 | free(content); | |
2198 | if (ret < 0) { | |
2199 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2200 | goto end; | |
2201 | } | |
2202 | ||
2203 | context.ctx = ret; | |
045fc617 JG |
2204 | } else if (!strcmp((const char *) context_child_node->name, |
2205 | config_element_context_perf)) { | |
2206 | /* perf */ | |
dcf266c0 JG |
2207 | xmlNodePtr perf_attr_node; |
2208 | ||
14ce5bd8 JG |
2209 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2210 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2211 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2212 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2213 | perf_attr_node; perf_attr_node = | |
2214 | xmlNextElementSibling(perf_attr_node)) { | |
2215 | if (!strcmp((const char *) perf_attr_node->name, | |
2216 | config_element_type)) { | |
2217 | xmlChar *content; | |
2218 | uint64_t type = 0; | |
2219 | ||
2220 | /* type */ | |
2221 | content = xmlNodeGetContent(perf_attr_node); | |
2222 | if (!content) { | |
2223 | ret = -LTTNG_ERR_NOMEM; | |
2224 | goto end; | |
2225 | } | |
2226 | ||
2227 | ret = parse_uint(content, &type); | |
2228 | free(content); | |
2229 | if (ret) { | |
2230 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2231 | goto end; | |
2232 | } | |
2233 | ||
2234 | if (type > UINT32_MAX) { | |
2235 | WARN("perf context type out of range."); | |
2236 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2237 | goto end; | |
2238 | } | |
2239 | ||
2240 | context.u.perf_counter.type = type; | |
2241 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2242 | config_element_config)) { | |
2243 | xmlChar *content; | |
2244 | uint64_t config = 0; | |
2245 | ||
2246 | /* config */ | |
2247 | content = xmlNodeGetContent(perf_attr_node); | |
2248 | if (!content) { | |
2249 | ret = -LTTNG_ERR_NOMEM; | |
2250 | goto end; | |
2251 | } | |
2252 | ||
2253 | ret = parse_uint(content, &config); | |
2254 | free(content); | |
2255 | if (ret) { | |
2256 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2257 | goto end; | |
2258 | } | |
2259 | ||
2260 | context.u.perf_counter.config = config; | |
2261 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2262 | config_element_name)) { | |
2263 | xmlChar *content; | |
dcf266c0 JG |
2264 | |
2265 | /* name */ | |
2266 | content = xmlNodeGetContent(perf_attr_node); | |
2267 | if (!content) { | |
2268 | ret = -LTTNG_ERR_NOMEM; | |
2269 | goto end; | |
2270 | } | |
2271 | ||
d2e67842 JG |
2272 | ret = lttng_strncpy(context.u.perf_counter.name, |
2273 | (const char *) content, | |
2274 | LTTNG_SYMBOL_NAME_LEN); | |
2275 | if (ret == -1) { | |
2276 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2277 | (const char *) content, | |
2278 | strlen((const char *) content), | |
2279 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2280 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2281 | free(content); | |
2282 | goto end; | |
2283 | } | |
dcf266c0 JG |
2284 | free(content); |
2285 | } | |
2286 | } | |
045fc617 JG |
2287 | } else if (!strcmp((const char *) context_child_node->name, |
2288 | config_element_context_app)) { | |
2289 | /* application context */ | |
2290 | xmlNodePtr app_ctx_node; | |
2291 | ||
2292 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2293 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2294 | app_ctx_node; app_ctx_node = | |
2295 | xmlNextElementSibling(app_ctx_node)) { | |
2296 | xmlChar *content; | |
2297 | char **target = strcmp( | |
2298 | (const char *) app_ctx_node->name, | |
2299 | config_element_context_app_provider_name) == 0 ? | |
2300 | &context.u.app_ctx.provider_name : | |
2301 | &context.u.app_ctx.ctx_name; | |
2302 | ||
2303 | content = xmlNodeGetContent(app_ctx_node); | |
2304 | if (!content) { | |
2305 | ret = -LTTNG_ERR_NOMEM; | |
2306 | goto end; | |
2307 | } | |
2308 | ||
2309 | *target = (char *) content; | |
2310 | } | |
2311 | } else { | |
2312 | /* Unrecognized context type */ | |
2313 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2314 | goto end; | |
dcf266c0 JG |
2315 | } |
2316 | ||
2317 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2318 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2319 | free(context.u.app_ctx.provider_name); | |
2320 | free(context.u.app_ctx.ctx_name); | |
2321 | } | |
dcf266c0 JG |
2322 | end: |
2323 | return ret; | |
2324 | } | |
2325 | ||
2326 | static | |
2327 | int process_contexts_node(xmlNodePtr contexts_node, | |
2328 | struct lttng_handle *handle, const char *channel_name) | |
2329 | { | |
2330 | int ret = 0; | |
2331 | xmlNodePtr context_node; | |
2332 | ||
2333 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2334 | context_node = xmlNextElementSibling(context_node)) { | |
2335 | ret = process_context_node(context_node, handle, channel_name); | |
2336 | if (ret) { | |
2337 | goto end; | |
2338 | } | |
2339 | } | |
2340 | end: | |
2341 | return ret; | |
2342 | } | |
2343 | ||
847a5916 JR |
2344 | static |
2345 | int process_pid_tracker_node(xmlNodePtr pid_tracker_node, | |
2346 | struct lttng_handle *handle) | |
2347 | { | |
dd49e13f | 2348 | int ret = 0, child; |
847a5916 JR |
2349 | xmlNodePtr targets_node = NULL; |
2350 | xmlNodePtr node; | |
2351 | ||
2352 | assert(handle); | |
2353 | assert(pid_tracker_node); | |
2354 | /* get the targets node */ | |
2355 | for (node = xmlFirstElementChild(pid_tracker_node); node; | |
2356 | node = xmlNextElementSibling(node)) { | |
2357 | if (!strcmp((const char *) node->name, | |
2358 | config_element_targets)) { | |
2359 | targets_node = node; | |
2360 | break; | |
2361 | } | |
2362 | } | |
2363 | ||
2364 | if (!targets_node) { | |
2365 | ret = LTTNG_ERR_INVALID; | |
2366 | goto end; | |
2367 | } | |
2368 | ||
2369 | /* Go through all pid_target node */ | |
2370 | child = xmlChildElementCount(targets_node); | |
2371 | if (child == 0) { | |
2372 | /* The session is explicitly set to target nothing. */ | |
2373 | ret = lttng_untrack_pid(handle, -1); | |
2374 | if (ret) { | |
2375 | goto end; | |
2376 | } | |
2377 | } | |
2378 | for (node = xmlFirstElementChild(targets_node); node; | |
2379 | node = xmlNextElementSibling(node)) { | |
2380 | xmlNodePtr pid_target_node = node; | |
2381 | ||
2382 | /* get pid node and track it */ | |
2383 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2384 | node = xmlNextElementSibling(node)) { | |
2385 | if (!strcmp((const char *) node->name, | |
2386 | config_element_pid)) { | |
2387 | int64_t pid; | |
2388 | xmlChar *content = NULL; | |
2389 | ||
2390 | content = xmlNodeGetContent(node); | |
2391 | if (!content) { | |
2392 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2393 | goto end; | |
2394 | } | |
2395 | ||
2396 | ret = parse_int(content, &pid); | |
2397 | free(content); | |
2398 | if (ret) { | |
2399 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2400 | goto end; | |
2401 | } | |
2402 | ||
2403 | ret = lttng_track_pid(handle, (int) pid); | |
2404 | if (ret) { | |
2405 | goto end; | |
2406 | } | |
2407 | } | |
2408 | } | |
2409 | node = pid_target_node; | |
2410 | } | |
2411 | ||
2412 | end: | |
2413 | return ret; | |
2414 | } | |
2415 | ||
dcf266c0 JG |
2416 | static |
2417 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2418 | { | |
2419 | int ret; | |
2420 | struct lttng_domain domain = { 0 }; | |
2421 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2422 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2423 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2424 | xmlNodePtr trackers_node = NULL; |
2425 | xmlNodePtr pid_tracker_node = NULL; | |
dcf266c0 JG |
2426 | xmlNodePtr node; |
2427 | ||
2428 | assert(session_name); | |
2429 | ||
2430 | ret = init_domain(domain_node, &domain); | |
2431 | if (ret) { | |
2432 | goto end; | |
2433 | } | |
2434 | ||
2435 | handle = lttng_create_handle(session_name, &domain); | |
2436 | if (!handle) { | |
2437 | ret = -LTTNG_ERR_NOMEM; | |
2438 | goto end; | |
2439 | } | |
2440 | ||
2441 | /* get the channels node */ | |
2442 | for (node = xmlFirstElementChild(domain_node); node; | |
2443 | node = xmlNextElementSibling(node)) { | |
2444 | if (!strcmp((const char *) node->name, | |
2445 | config_element_channels)) { | |
2446 | channels_node = node; | |
2447 | break; | |
2448 | } | |
2449 | } | |
2450 | ||
2451 | if (!channels_node) { | |
2452 | goto end; | |
2453 | } | |
2454 | ||
2455 | /* create all channels */ | |
2456 | for (node = xmlFirstElementChild(channels_node); node; | |
2457 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2458 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2459 | xmlNodePtr contexts_node = NULL; |
2460 | xmlNodePtr events_node = NULL; | |
2461 | xmlNodePtr channel_attr_node; | |
2462 | ||
36d1687c JG |
2463 | /* |
2464 | * Channels of the "agent" types cannot be created directly. | |
2465 | * They are meant to be created implicitly through the | |
2466 | * activation of events in their domain. However, a user | |
2467 | * can override the default channel configuration attributes | |
2468 | * by creating the underlying UST channel _before_ enabling | |
2469 | * an agent domain event. | |
2470 | * | |
2471 | * Hence, the channel's type is substituted before the creation | |
2472 | * and restored by the time the events are created. | |
2473 | */ | |
2474 | switch (domain.type) { | |
2475 | case LTTNG_DOMAIN_JUL: | |
2476 | case LTTNG_DOMAIN_LOG4J: | |
2477 | case LTTNG_DOMAIN_PYTHON: | |
2478 | domain.type = LTTNG_DOMAIN_UST; | |
2479 | default: | |
2480 | break; | |
2481 | } | |
2482 | ||
4fc2b126 JR |
2483 | channel = lttng_channel_create(&domain); |
2484 | if (!channel) { | |
2485 | ret = -1; | |
2486 | goto end; | |
2487 | } | |
dcf266c0 JG |
2488 | |
2489 | for (channel_attr_node = xmlFirstElementChild(node); | |
2490 | channel_attr_node; channel_attr_node = | |
2491 | xmlNextElementSibling(channel_attr_node)) { | |
2492 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2493 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2494 | if (ret) { |
2495 | goto end; | |
2496 | } | |
2497 | } | |
2498 | ||
4fc2b126 | 2499 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2500 | if (ret < 0) { |
2501 | goto end; | |
2502 | } | |
2503 | ||
36d1687c JG |
2504 | /* Restore the original channel domain. */ |
2505 | domain.type = original_domain; | |
2506 | ||
4fc2b126 | 2507 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2508 | if (ret) { |
2509 | goto end; | |
2510 | } | |
2511 | ||
2512 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2513 | channel->name); |
dcf266c0 JG |
2514 | if (ret) { |
2515 | goto end; | |
2516 | } | |
4fc2b126 JR |
2517 | |
2518 | lttng_channel_destroy(channel); | |
dcf266c0 | 2519 | } |
4fc2b126 | 2520 | channel = NULL; |
847a5916 JR |
2521 | |
2522 | /* get the trackers node */ | |
2523 | for (node = xmlFirstElementChild(domain_node); node; | |
2524 | node = xmlNextElementSibling(node)) { | |
2525 | if (!strcmp((const char *) node->name, | |
2526 | config_element_trackers)) { | |
2527 | trackers_node = node; | |
2528 | break; | |
2529 | } | |
2530 | } | |
2531 | ||
2532 | if (!trackers_node) { | |
2533 | goto end; | |
2534 | } | |
2535 | ||
2536 | for (node = xmlFirstElementChild(trackers_node); node; | |
2537 | node = xmlNextElementSibling(node)) { | |
2538 | if (!strcmp((const char *)node->name,config_element_pid_tracker)) { | |
2539 | pid_tracker_node = node; | |
2540 | ret = process_pid_tracker_node(pid_tracker_node, handle); | |
2541 | if (ret) { | |
2542 | goto end; | |
2543 | } | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | if (!pid_tracker_node) { | |
2548 | lttng_track_pid(handle, -1); | |
2549 | } | |
2550 | ||
dcf266c0 | 2551 | end: |
4fc2b126 | 2552 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2553 | lttng_destroy_handle(handle); |
2554 | return ret; | |
2555 | } | |
2556 | ||
66ea93b1 JG |
2557 | static |
2558 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
2559 | { | |
2560 | int ret; | |
2561 | enum lttng_rotation_status status; | |
2562 | struct lttng_rotation_schedule *periodic = | |
2563 | lttng_rotation_schedule_periodic_create(); | |
2564 | ||
2565 | if (!periodic) { | |
2566 | ret = -LTTNG_ERR_NOMEM; | |
2567 | goto error; | |
2568 | } | |
2569 | ||
2570 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
2571 | time_us); | |
2572 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
2573 | ret = -LTTNG_ERR_INVALID; | |
2574 | goto error; | |
2575 | } | |
2576 | ||
2577 | status = lttng_session_add_rotation_schedule(name, periodic); | |
2578 | switch (status) { | |
2579 | case LTTNG_ROTATION_STATUS_OK: | |
2580 | ret = LTTNG_OK; | |
2581 | break; | |
2582 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2583 | case LTTNG_ROTATION_STATUS_INVALID: | |
2584 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2585 | break; | |
2586 | default: | |
2587 | ret = -LTTNG_ERR_UNK; | |
2588 | break; | |
2589 | } | |
2590 | error: | |
2591 | lttng_rotation_schedule_destroy(periodic); | |
2592 | return ret; | |
2593 | } | |
2594 | ||
2595 | static | |
2596 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
2597 | { | |
2598 | int ret; | |
2599 | enum lttng_rotation_status status; | |
2600 | struct lttng_rotation_schedule *size = | |
2601 | lttng_rotation_schedule_size_threshold_create(); | |
2602 | ||
2603 | if (!size) { | |
2604 | ret = -LTTNG_ERR_NOMEM; | |
2605 | goto error; | |
2606 | } | |
2607 | ||
2608 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
2609 | size_bytes); | |
2610 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
2611 | ret = -LTTNG_ERR_INVALID; | |
2612 | goto error; | |
2613 | } | |
2614 | ||
2615 | status = lttng_session_add_rotation_schedule(name, size); | |
2616 | switch (status) { | |
2617 | case LTTNG_ROTATION_STATUS_OK: | |
2618 | ret = LTTNG_OK; | |
2619 | break; | |
2620 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2621 | case LTTNG_ROTATION_STATUS_INVALID: | |
2622 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2623 | break; | |
2624 | default: | |
2625 | ret = -LTTNG_ERR_UNK; | |
2626 | break; | |
2627 | } | |
2628 | error: | |
2629 | lttng_rotation_schedule_destroy(size); | |
2630 | return ret; | |
2631 | } | |
2632 | ||
dcf266c0 JG |
2633 | static |
2634 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
2635 | int overwrite, |
2636 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2637 | { |
2638 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 2639 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
2640 | rotation_timer_interval = 0, |
2641 | rotation_size = 0; | |
d324faf7 | 2642 | xmlChar *name = NULL; |
9e7c9f56 | 2643 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2644 | xmlNodePtr domains_node = NULL; |
2645 | xmlNodePtr output_node = NULL; | |
2646 | xmlNodePtr node; | |
90936dcf | 2647 | xmlNodePtr attributes_child; |
dcf266c0 JG |
2648 | struct lttng_domain *kernel_domain = NULL; |
2649 | struct lttng_domain *ust_domain = NULL; | |
2650 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2651 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2652 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2653 | |
2654 | for (node = xmlFirstElementChild(session_node); node; | |
2655 | node = xmlNextElementSibling(node)) { | |
2656 | if (!name && !strcmp((const char *) node->name, | |
2657 | config_element_name)) { | |
2658 | /* name */ | |
2659 | xmlChar *node_content = xmlNodeGetContent(node); | |
2660 | if (!node_content) { | |
2661 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2662 | goto error; |
dcf266c0 JG |
2663 | } |
2664 | ||
d324faf7 | 2665 | name = node_content; |
dcf266c0 JG |
2666 | } else if (!domains_node && !strcmp((const char *) node->name, |
2667 | config_element_domains)) { | |
2668 | /* domains */ | |
2669 | domains_node = node; | |
2670 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2671 | config_element_started)) { | |
2672 | /* started */ | |
2673 | xmlChar *node_content = xmlNodeGetContent(node); | |
2674 | if (!node_content) { | |
2675 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2676 | goto error; |
dcf266c0 JG |
2677 | } |
2678 | ||
2679 | ret = parse_bool(node_content, &started); | |
2680 | free(node_content); | |
2681 | if (ret) { | |
2682 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2683 | goto error; |
dcf266c0 JG |
2684 | } |
2685 | } else if (!output_node && !strcmp((const char *) node->name, | |
2686 | config_element_output)) { | |
2687 | /* output */ | |
2688 | output_node = node; | |
9e7c9f56 JR |
2689 | } else if (!shm_path && !strcmp((const char *) node->name, |
2690 | config_element_shared_memory_path)) { | |
2691 | /* shared memory path */ | |
2692 | xmlChar *node_content = xmlNodeGetContent(node); | |
2693 | if (!node_content) { | |
2694 | ret = -LTTNG_ERR_NOMEM; | |
2695 | goto error; | |
2696 | } | |
2697 | ||
2698 | shm_path = node_content; | |
dcf266c0 | 2699 | } else { |
259c2674 JD |
2700 | /* |
2701 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
2702 | * rotation_timer_interval. |
2703 | */ | |
2704 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
2705 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
2706 | if (!strcmp((const char *) attributes_child->name, | |
2707 | config_element_snapshot_mode)) { | |
2708 | /* snapshot_mode */ | |
2709 | xmlChar *snapshot_mode_content = | |
2710 | xmlNodeGetContent(attributes_child); | |
2711 | if (!snapshot_mode_content) { | |
2712 | ret = -LTTNG_ERR_NOMEM; | |
2713 | goto error; | |
2714 | } | |
dcf266c0 | 2715 | |
90936dcf JD |
2716 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
2717 | free(snapshot_mode_content); | |
2718 | if (ret) { | |
2719 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2720 | goto error; | |
2721 | } | |
2722 | } else if (!strcmp((const char *) attributes_child->name, | |
2723 | config_element_live_timer_interval)) { | |
2724 | /* live_timer_interval */ | |
2725 | xmlChar *timer_interval_content = | |
2726 | xmlNodeGetContent(attributes_child); | |
2727 | if (!timer_interval_content) { | |
2728 | ret = -LTTNG_ERR_NOMEM; | |
2729 | goto error; | |
2730 | } | |
dcf266c0 | 2731 | |
90936dcf JD |
2732 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
2733 | free(timer_interval_content); | |
2734 | if (ret) { | |
2735 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2736 | goto error; | |
2737 | } | |
dcf266c0 | 2738 | } |
90936dcf JD |
2739 | if (!strcmp((const char *) attributes_child->name, |
2740 | config_element_rotation_timer_interval)) { | |
2741 | /* rotation_timer_interval */ | |
2742 | xmlChar *timer_interval_content = | |
2743 | xmlNodeGetContent(attributes_child); | |
2744 | if (!timer_interval_content) { | |
2745 | ret = -LTTNG_ERR_NOMEM; | |
2746 | goto error; | |
2747 | } | |
2748 | ||
2749 | ret = parse_uint(timer_interval_content, &rotation_timer_interval); | |
2750 | free(timer_interval_content); | |
2751 | if (ret) { | |
2752 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2753 | goto error; | |
2754 | } | |
259c2674 | 2755 | } |
90936dcf JD |
2756 | if (!strcmp((const char *) attributes_child->name, |
2757 | config_element_rotation_size)) { | |
2758 | /* rotation_size */ | |
2759 | xmlChar *rotation_size_content = | |
2760 | xmlNodeGetContent(attributes_child); | |
2761 | if (!rotation_size_content) { | |
2762 | ret = -LTTNG_ERR_NOMEM; | |
2763 | goto error; | |
2764 | } | |
259c2674 | 2765 | |
90936dcf JD |
2766 | ret = parse_uint(rotation_size_content, &rotation_size); |
2767 | free(rotation_size_content); | |
2768 | if (ret) { | |
2769 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2770 | goto error; | |
2771 | } | |
259c2674 JD |
2772 | } |
2773 | } | |
dcf266c0 JG |
2774 | } |
2775 | } | |
2776 | ||
2777 | if (!name) { | |
2778 | /* Mandatory attribute, as defined in the session XSD */ | |
2779 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2780 | goto error; |
dcf266c0 JG |
2781 | } |
2782 | ||
d324faf7 | 2783 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2784 | /* This is not the session we are looking for */ |
c2da8cde DG |
2785 | ret = -LTTNG_ERR_NO_SESSION; |
2786 | goto error; | |
dcf266c0 JG |
2787 | } |
2788 | ||
2789 | /* Init domains to create the session handles */ | |
2790 | for (node = xmlFirstElementChild(domains_node); node; | |
2791 | node = xmlNextElementSibling(node)) { | |
2792 | struct lttng_domain *domain; | |
2793 | ||
2794 | domain = zmalloc(sizeof(*domain)); | |
2795 | if (!domain) { | |
2796 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2797 | goto error; |
dcf266c0 JG |
2798 | } |
2799 | ||
2800 | ret = init_domain(node, domain); | |
2801 | if (ret) { | |
2802 | goto domain_init_error; | |
2803 | } | |
2804 | ||
2805 | switch (domain->type) { | |
2806 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2807 | if (kernel_domain) { |
2808 | /* Same domain seen twice, invalid! */ | |
2809 | goto domain_init_error; | |
2810 | } | |
dcf266c0 JG |
2811 | kernel_domain = domain; |
2812 | break; | |
2813 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2814 | if (ust_domain) { |
2815 | /* Same domain seen twice, invalid! */ | |
2816 | goto domain_init_error; | |
2817 | } | |
dcf266c0 JG |
2818 | ust_domain = domain; |
2819 | break; | |
2820 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2821 | if (jul_domain) { |
2822 | /* Same domain seen twice, invalid! */ | |
2823 | goto domain_init_error; | |
2824 | } | |
dcf266c0 JG |
2825 | jul_domain = domain; |
2826 | break; | |
5cdb6027 DG |
2827 | case LTTNG_DOMAIN_LOG4J: |
2828 | if (log4j_domain) { | |
2829 | /* Same domain seen twice, invalid! */ | |
2830 | goto domain_init_error; | |
2831 | } | |
2832 | log4j_domain = domain; | |
2833 | break; | |
0e115563 DG |
2834 | case LTTNG_DOMAIN_PYTHON: |
2835 | if (python_domain) { | |
2836 | /* Same domain seen twice, invalid! */ | |
2837 | goto domain_init_error; | |
2838 | } | |
2839 | python_domain = domain; | |
2840 | break; | |
dcf266c0 JG |
2841 | default: |
2842 | WARN("Invalid domain type"); | |
2843 | goto domain_init_error; | |
2844 | } | |
2845 | continue; | |
2846 | domain_init_error: | |
2847 | free(domain); | |
2848 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2849 | goto error; |
dcf266c0 JG |
2850 | } |
2851 | ||
2aaf5fc7 JR |
2852 | /* Apply overrides */ |
2853 | if (overrides) { | |
2854 | if (overrides->session_name) { | |
2855 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
2856 | if (!name_override) { | |
2857 | ret = -LTTNG_ERR_NOMEM; | |
2858 | goto error; | |
2859 | } | |
2860 | ||
2861 | /* Overrides the session name to the provided name */ | |
2862 | xmlFree(name); | |
2863 | name = name_override; | |
2864 | } | |
2865 | } | |
2866 | ||
40b4155f | 2867 | if (overwrite) { |
dcf266c0 | 2868 | /* Destroy session if it exists */ |
d324faf7 | 2869 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2870 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2871 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2872 | goto error; |
dcf266c0 JG |
2873 | } |
2874 | } | |
2875 | ||
2876 | /* Create session type depending on output type */ | |
2877 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
2878 | ret = create_snapshot_session((const char *) name, output_node, |
2879 | overrides); | |
dcf266c0 JG |
2880 | } else if (live_timer_interval && |
2881 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 2882 | ret = create_session((const char *) name, |
1b08cbce | 2883 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
2884 | } else { |
2885 | /* regular session */ | |
194dfca0 | 2886 | ret = create_session((const char *) name, |
1b08cbce | 2887 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 2888 | } |
dcf266c0 | 2889 | if (ret) { |
c2da8cde | 2890 | goto error; |
dcf266c0 JG |
2891 | } |
2892 | ||
9e7c9f56 JR |
2893 | if (shm_path) { |
2894 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2895 | (const char *) shm_path); |
9e7c9f56 JR |
2896 | if (ret) { |
2897 | goto error; | |
2898 | } | |
2899 | } | |
2900 | ||
dcf266c0 JG |
2901 | for (node = xmlFirstElementChild(domains_node); node; |
2902 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2903 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2904 | if (ret) { |
2905 | goto end; | |
2906 | } | |
2907 | } | |
2908 | ||
66ea93b1 JG |
2909 | if (rotation_timer_interval) { |
2910 | ret = add_periodic_rotation((const char *) name, | |
2911 | rotation_timer_interval); | |
2912 | if (ret < 0) { | |
259c2674 JD |
2913 | goto error; |
2914 | } | |
66ea93b1 JG |
2915 | } |
2916 | if (rotation_size) { | |
2917 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 2918 | rotation_size); |
66ea93b1 | 2919 | if (ret < 0) { |
259c2674 JD |
2920 | goto error; |
2921 | } | |
2922 | } | |
2923 | ||
dcf266c0 | 2924 | if (started) { |
d324faf7 | 2925 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2926 | if (ret) { |
2927 | goto end; | |
2928 | } | |
2929 | } | |
c2da8cde | 2930 | |
dcf266c0 | 2931 | end: |
b2579dc1 | 2932 | if (ret < 0) { |
d324faf7 JG |
2933 | ERR("Failed to load session %s: %s", (const char *) name, |
2934 | lttng_strerror(ret)); | |
2935 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2936 | } |
2937 | ||
c2da8cde | 2938 | error: |
dcf266c0 JG |
2939 | free(kernel_domain); |
2940 | free(ust_domain); | |
2941 | free(jul_domain); | |
5cdb6027 | 2942 | free(log4j_domain); |
135a3893 | 2943 | free(python_domain); |
d324faf7 | 2944 | xmlFree(name); |
9e7c9f56 | 2945 | xmlFree(shm_path); |
dcf266c0 JG |
2946 | return ret; |
2947 | } | |
2948 | ||
cf53c06d DG |
2949 | /* |
2950 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2951 | * Return -1 if the path is EPERM. | |
2952 | */ | |
2953 | static int validate_file_read_creds(const char *path) | |
2954 | { | |
2955 | int ret; | |
2956 | ||
2957 | assert(path); | |
2958 | ||
2959 | /* Can we read the file. */ | |
2960 | ret = access(path, R_OK); | |
2961 | if (!ret) { | |
2962 | goto valid; | |
2963 | } | |
2964 | if (errno == EACCES) { | |
2965 | return -1; | |
2966 | } else { | |
2967 | /* Invalid. */ | |
2968 | return 0; | |
2969 | } | |
2970 | valid: | |
2971 | return 1; | |
2972 | } | |
2973 | ||
dcf266c0 JG |
2974 | static |
2975 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
2976 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
2977 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2978 | { |
2979 | int ret, session_found = !session_name; | |
2980 | xmlDocPtr doc = NULL; | |
2981 | xmlNodePtr sessions_node; | |
2982 | xmlNodePtr session_node; | |
dcf266c0 JG |
2983 | |
2984 | assert(path); | |
2985 | assert(validation_ctx); | |
2986 | ||
cf53c06d DG |
2987 | ret = validate_file_read_creds(path); |
2988 | if (ret != 1) { | |
2989 | if (ret == -1) { | |
2990 | ret = -LTTNG_ERR_EPERM; | |
2991 | } else { | |
2992 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2993 | } | |
dcf266c0 JG |
2994 | goto end; |
2995 | } | |
2996 | ||
2997 | doc = xmlParseFile(path); | |
2998 | if (!doc) { | |
2999 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3000 | goto end; | |
3001 | } | |
3002 | ||
3003 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3004 | if (ret) { | |
3005 | ERR("Session configuration file validation failed"); | |
3006 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3007 | goto end; | |
3008 | } | |
3009 | ||
3010 | sessions_node = xmlDocGetRootElement(doc); | |
3011 | if (!sessions_node) { | |
3012 | goto end; | |
3013 | } | |
3014 | ||
3015 | for (session_node = xmlFirstElementChild(sessions_node); | |
3016 | session_node; session_node = | |
3017 | xmlNextElementSibling(session_node)) { | |
3018 | ret = process_session_node(session_node, | |
1b08cbce | 3019 | session_name, overwrite, overrides); |
dcf266c0 JG |
3020 | if (session_name && ret == 0) { |
3021 | /* Target session found and loaded */ | |
3022 | session_found = 1; | |
3023 | break; | |
3024 | } | |
3025 | } | |
3026 | end: | |
3027 | xmlFreeDoc(doc); | |
3028 | if (!ret) { | |
a96bc65d | 3029 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3030 | } |
3031 | return ret; | |
3032 | } | |
3033 | ||
3034 | static | |
3035 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3036 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3037 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3038 | { |
3039 | int ret, session_found = !session_name; | |
dcf266c0 | 3040 | DIR *directory = NULL; |
cce35f91 JG |
3041 | struct lttng_dynamic_buffer file_path; |
3042 | size_t path_len; | |
dcf266c0 JG |
3043 | |
3044 | assert(path); | |
3045 | assert(validation_ctx); | |
cce35f91 JG |
3046 | path_len = strlen(path); |
3047 | lttng_dynamic_buffer_init(&file_path); | |
3048 | if (path_len >= LTTNG_PATH_MAX) { | |
3049 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3050 | path, path_len, LTTNG_PATH_MAX); | |
3051 | ret = -LTTNG_ERR_INVALID; | |
3052 | goto end; | |
3053 | } | |
dcf266c0 | 3054 | |
4af16958 DG |
3055 | directory = opendir(path); |
3056 | if (!directory) { | |
11143783 DG |
3057 | switch (errno) { |
3058 | case ENOTDIR: | |
0f0a81b5 DG |
3059 | /* Try the file loading. */ |
3060 | break; | |
11143783 DG |
3061 | case ENOENT: |
3062 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3063 | goto end; | |
3064 | default: | |
0f0a81b5 DG |
3065 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3066 | goto end; | |
4af16958 | 3067 | } |
dcf266c0 | 3068 | } |
4af16958 | 3069 | if (directory) { |
cce35f91 | 3070 | size_t file_path_root_len; |
dcf266c0 | 3071 | |
cce35f91 JG |
3072 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3073 | LTTNG_PATH_MAX); | |
3074 | if (ret) { | |
3075 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3076 | goto end; |
3077 | } | |
3078 | ||
cce35f91 JG |
3079 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3080 | if (ret) { | |
dcf266c0 | 3081 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3082 | goto end; |
3083 | } | |
3084 | ||
cce35f91 JG |
3085 | if (file_path.data[file_path.size - 1] != '/') { |
3086 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3087 | if (ret) { | |
3088 | ret = -LTTNG_ERR_NOMEM; | |
3089 | goto end; | |
3090 | } | |
dcf266c0 | 3091 | } |
cce35f91 | 3092 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3093 | |
3094 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3095 | for (;;) { |
3096 | size_t file_name_len; | |
3097 | struct dirent *result; | |
3098 | ||
3099 | /* | |
3100 | * When the end of the directory stream is reached, NULL | |
3101 | * is returned and errno is kept unchanged. When an | |
3102 | * error occurs, NULL is returned and errno is set | |
3103 | * accordingly. To distinguish between the two, set | |
3104 | * errno to zero before calling readdir(). | |
3105 | * | |
3106 | * On success, readdir() returns a pointer to a dirent | |
3107 | * structure. This structure may be statically | |
3108 | * allocated, do not attempt to free(3) it. | |
3109 | */ | |
3110 | errno = 0; | |
3111 | result = readdir(directory); | |
3112 | ||
ff86d8d0 | 3113 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3114 | if (!result) { |
3115 | if (errno) { | |
3116 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3117 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3118 | goto end; | |
3119 | } | |
3120 | break; | |
3121 | } | |
3122 | ||
3123 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3124 | |
3125 | if (file_name_len <= | |
3126 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3127 | continue; | |
3128 | } | |
3129 | ||
cce35f91 JG |
3130 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3131 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3132 | result->d_name, | |
3133 | /* +1 to account for NULL terminator. */ | |
3134 | file_path.size + file_name_len + 1, | |
3135 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3136 | continue; |
3137 | } | |
3138 | ||
cce35f91 | 3139 | /* Does the file end with .lttng? */ |
dcf266c0 | 3140 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3141 | result->d_name + file_name_len - sizeof( |
3142 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3143 | continue; |
3144 | } | |
3145 | ||
cce35f91 JG |
3146 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3147 | file_name_len + 1); | |
3148 | if (ret) { | |
3149 | ret = -LTTNG_ERR_NOMEM; | |
3150 | goto end; | |
3151 | } | |
dcf266c0 | 3152 | |
cce35f91 | 3153 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3154 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3155 | if (session_name && !ret) { |
3156 | session_found = 1; | |
3157 | break; | |
3158 | } | |
cce35f91 JG |
3159 | /* |
3160 | * Reset the buffer's size to the location of the | |
3161 | * path's trailing '/'. | |
3162 | */ | |
3163 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3164 | file_path_root_len); | |
3165 | if (ret) { | |
3166 | ret = -LTTNG_ERR_UNK; | |
3167 | goto end; | |
3168 | } | |
dcf266c0 JG |
3169 | } |
3170 | ||
dcf266c0 JG |
3171 | } else { |
3172 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3173 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3174 | if (ret) { |
3175 | goto end; | |
3176 | } else { | |
3177 | session_found = 1; | |
3178 | } | |
3179 | } | |
3180 | ||
3181 | end: | |
3182 | if (directory) { | |
3183 | if (closedir(directory)) { | |
3184 | PERROR("closedir"); | |
3185 | } | |
3186 | } | |
464133ea | 3187 | if (session_found && !ret) { |
6c66fa0f | 3188 | ret = 0; |
dcf266c0 | 3189 | } |
cce35f91 | 3190 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3191 | return ret; |
3192 | } | |
3193 | ||
ab38c13f DG |
3194 | /* |
3195 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3196 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3197 | */ |
3198 | static int validate_path_creds(const char *path) | |
3199 | { | |
3200 | int ret, uid = getuid(); | |
3201 | struct stat buf; | |
3202 | ||
3203 | assert(path); | |
3204 | ||
cf53c06d | 3205 | if (uid == 0) { |
ab38c13f DG |
3206 | goto valid; |
3207 | } | |
3208 | ||
3209 | ret = stat(path, &buf); | |
3210 | if (ret < 0) { | |
3211 | if (errno != ENOENT) { | |
3212 | PERROR("stat"); | |
3213 | } | |
ab38c13f DG |
3214 | goto valid; |
3215 | } | |
3216 | ||
3217 | if (buf.st_uid != uid) { | |
3218 | goto invalid; | |
3219 | } | |
3220 | ||
3221 | valid: | |
ab38c13f | 3222 | return 1; |
cf53c06d DG |
3223 | invalid: |
3224 | return 0; | |
ab38c13f DG |
3225 | } |
3226 | ||
dcf266c0 JG |
3227 | LTTNG_HIDDEN |
3228 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3229 | int overwrite, unsigned int autoload, |
3230 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3231 | { |
3232 | int ret; | |
6c66fa0f | 3233 | bool session_loaded = false; |
cf53c06d | 3234 | const char *path_ptr = NULL; |
dcf266c0 JG |
3235 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3236 | ||
3237 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3238 | if (ret) { | |
3239 | goto end; | |
3240 | } | |
3241 | ||
3242 | if (!path) { | |
ab38c13f DG |
3243 | char *home_path; |
3244 | const char *sys_path; | |
3245 | ||
dcf266c0 | 3246 | /* Try home path */ |
ab38c13f | 3247 | home_path = utils_get_home_dir(); |
dcf266c0 | 3248 | if (home_path) { |
ab38c13f | 3249 | char path[PATH_MAX]; |
dcf266c0 | 3250 | |
d4fcf703 DG |
3251 | /* |
3252 | * Try user session configuration path. Ignore error here so we can | |
3253 | * continue loading the system wide sessions. | |
3254 | */ | |
ab38c13f DG |
3255 | if (autoload) { |
3256 | ret = snprintf(path, sizeof(path), | |
3257 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3258 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3259 | if (ret < 0) { |
3260 | PERROR("snprintf session autoload home config path"); | |
3261 | goto end; | |
3262 | } | |
3263 | ||
3264 | /* | |
3265 | * Credentials are only validated for the autoload in order to | |
3266 | * avoid any user session daemon to try to load kernel sessions | |
3267 | * automatically and failing all the times. | |
3268 | */ | |
3269 | ret = validate_path_creds(path); | |
3270 | if (ret) { | |
3271 | path_ptr = path; | |
3272 | } | |
ab38c13f DG |
3273 | } else { |
3274 | ret = snprintf(path, sizeof(path), | |
3275 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3276 | if (ret < 0) { |
3277 | PERROR("snprintf session home config path"); | |
3278 | goto end; | |
3279 | } | |
3280 | path_ptr = path; | |
ab38c13f | 3281 | } |
cf53c06d DG |
3282 | if (path_ptr) { |
3283 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3284 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3285 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3286 | goto end; | |
3287 | } | |
3288 | /* | |
3289 | * Continue even if the session was found since we have to try | |
3290 | * the system wide sessions. | |
3291 | */ | |
6c66fa0f | 3292 | session_loaded = true; |
ab38c13f | 3293 | } |
d4fcf703 | 3294 | } |
ab38c13f | 3295 | |
cf53c06d DG |
3296 | /* Reset path pointer for the system wide dir. */ |
3297 | path_ptr = NULL; | |
3298 | ||
d4fcf703 DG |
3299 | /* Try system wide configuration directory. */ |
3300 | if (autoload) { | |
3301 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3302 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3303 | ret = validate_path_creds(sys_path); |
3304 | if (ret) { | |
3305 | path_ptr = sys_path; | |
3306 | } | |
d4fcf703 | 3307 | } else { |
cf53c06d DG |
3308 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3309 | path_ptr = sys_path; | |
d4fcf703 DG |
3310 | } |
3311 | ||
cf53c06d DG |
3312 | if (path_ptr) { |
3313 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3314 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3315 | if (!ret) { |
3316 | session_loaded = true; | |
3317 | } | |
dcf266c0 JG |
3318 | } |
3319 | } else { | |
3320 | ret = access(path, F_OK); | |
3321 | if (ret < 0) { | |
3322 | PERROR("access"); | |
3323 | switch (errno) { | |
3324 | case ENOENT: | |
3325 | ret = -LTTNG_ERR_INVALID; | |
3326 | WARN("Session configuration path does not exist."); | |
3327 | break; | |
3328 | case EACCES: | |
3329 | ret = -LTTNG_ERR_EPERM; | |
3330 | break; | |
3331 | default: | |
3332 | ret = -LTTNG_ERR_UNK; | |
3333 | break; | |
3334 | } | |
3335 | goto end; | |
3336 | } | |
3337 | ||
3338 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3339 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3340 | } |
3341 | end: | |
3342 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3343 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3344 | /* | |
3345 | * Don't report an error if no sessions are found when called | |
3346 | * without a session_name or a search path. | |
3347 | */ | |
3348 | ret = 0; | |
3349 | } | |
6c66fa0f JG |
3350 | |
3351 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3352 | /* A matching session was found in one of the search paths. */ | |
3353 | ret = 0; | |
3354 | } | |
dcf266c0 JG |
3355 | return ret; |
3356 | } | |
56766c75 JG |
3357 | |
3358 | static | |
3359 | void __attribute__((destructor)) session_config_exit(void) | |
3360 | { | |
3361 | xmlCleanupParser(); | |
3362 | } |