Commit | Line | Data |
---|---|---|
1501a7f3 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
1501a7f3 | 19 | #include <assert.h> |
1501a7f3 | 20 | #include <ctype.h> |
1501a7f3 JG |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
36f2332b | 24 | #include <inttypes.h> |
dcf266c0 JG |
25 | #include <dirent.h> |
26 | #include <unistd.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/stat.h> | |
6c66fa0f | 29 | #include <stdbool.h> |
1501a7f3 JG |
30 | |
31 | #include <common/defaults.h> | |
32 | #include <common/error.h> | |
33 | #include <common/macros.h> | |
34 | #include <common/utils.h> | |
e8fa9fb0 | 35 | #include <common/compat/getenv.h> |
fb198a11 JG |
36 | #include <lttng/lttng-error.h> |
37 | #include <libxml/parser.h> | |
38 | #include <libxml/valid.h> | |
39 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
40 | #include <libxml/tree.h> |
41 | #include <lttng/lttng.h> | |
42 | #include <lttng/snapshot.h> | |
1501a7f3 | 43 | |
f40ef1d5 | 44 | #include "session-config.h" |
36f2332b | 45 | #include "config-internal.h" |
1501a7f3 JG |
46 | |
47 | struct handler_filter_args { | |
48 | const char* section; | |
49 | config_entry_handler_cb handler; | |
50 | void *user_data; | |
51 | }; | |
52 | ||
dcf266c0 JG |
53 | struct session_config_validation_ctx { |
54 | xmlSchemaParserCtxtPtr parser_ctx; | |
55 | xmlSchemaPtr schema; | |
56 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
57 | }; | |
58 | ||
9d4b0931 | 59 | const char * const config_element_all = "all"; |
1501a7f3 JG |
60 | const char * const config_str_yes = "yes"; |
61 | const char * const config_str_true = "true"; | |
62 | const char * const config_str_on = "on"; | |
63 | const char * const config_str_no = "no"; | |
64 | const char * const config_str_false = "false"; | |
65 | const char * const config_str_off = "off"; | |
36f2332b | 66 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 67 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
68 | const char * const config_xml_indent_string = "\t"; |
69 | const char * const config_xml_true = "true"; | |
70 | const char * const config_xml_false = "false"; | |
1501a7f3 | 71 | |
fb198a11 JG |
72 | const char * const config_element_channel = "channel"; |
73 | const char * const config_element_channels = "channels"; | |
74 | const char * const config_element_domain = "domain"; | |
75 | const char * const config_element_domains = "domains"; | |
76 | const char * const config_element_event = "event"; | |
77 | const char * const config_element_events = "events"; | |
78 | const char * const config_element_context = "context"; | |
79 | const char * const config_element_contexts = "contexts"; | |
80 | const char * const config_element_attributes = "attributes"; | |
81 | const char * const config_element_exclusion = "exclusion"; | |
82 | const char * const config_element_exclusions = "exclusions"; | |
83 | const char * const config_element_function_attributes = "function_attributes"; | |
84 | const char * const config_element_probe_attributes = "probe_attributes"; | |
85 | const char * const config_element_symbol_name = "symbol_name"; | |
86 | const char * const config_element_address = "address"; | |
87 | const char * const config_element_offset = "offset"; | |
fb198a11 JG |
88 | const char * const config_element_enabled = "enabled"; |
89 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
90 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
91 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
92 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
93 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
94 | const char * const config_element_output = "output"; | |
95 | const char * const config_element_output_type = "output_type"; | |
96 | const char * const config_element_tracefile_size = "tracefile_size"; | |
97 | const char * const config_element_tracefile_count = "tracefile_count"; | |
98 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
99 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
100 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
101 | const char * const config_element_type = "type"; |
102 | const char * const config_element_buffer_type = "buffer_type"; | |
103 | const char * const config_element_session = "session"; | |
104 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
105 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
106 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
107 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
108 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
109 | const char * const config_element_config = "config"; |
110 | const char * const config_element_started = "started"; | |
111 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
112 | const char * const config_element_loglevel = "loglevel"; | |
113 | const char * const config_element_loglevel_type = "loglevel_type"; | |
114 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 115 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
116 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
117 | const char * const config_element_consumer_output = "consumer_output"; | |
118 | const char * const config_element_destination = "destination"; | |
119 | const char * const config_element_path = "path"; | |
120 | const char * const config_element_net_output = "net_output"; | |
121 | const char * const config_element_control_uri = "control_uri"; | |
122 | const char * const config_element_data_uri = "data_uri"; | |
123 | const char * const config_element_max_size = "max_size"; | |
ccf10263 | 124 | const char * const config_element_pid = "pid"; |
9d4b0931 | 125 | const char * const config_element_id = "id"; |
ccf10263 | 126 | const char * const config_element_pids = "pids"; |
9d4b0931 | 127 | const char * const config_element_name = "name"; |
9e7c9f56 | 128 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 | 129 | const char * const config_element_pid_tracker = "pid_tracker"; |
9d4b0931 MD |
130 | const char * const config_element_vpid_tracker = "vpid_tracker"; |
131 | const char * const config_element_uid_tracker = "uid_tracker"; | |
132 | const char * const config_element_vuid_tracker = "vuid_tracker"; | |
133 | const char * const config_element_gid_tracker = "gid_tracker"; | |
134 | const char * const config_element_vgid_tracker = "vgid_tracker"; | |
ebbf5ab7 | 135 | const char * const config_element_trackers = "trackers"; |
847a5916 | 136 | const char * const config_element_targets = "targets"; |
9d4b0931 | 137 | const char * const config_element_target_type = "target_type"; |
847a5916 | 138 | const char * const config_element_target_pid = "pid_target"; |
9d4b0931 MD |
139 | const char * const config_element_target_vpid = "vpid_target"; |
140 | const char * const config_element_target_uid = "uid_target"; | |
141 | const char * const config_element_target_vuid = "vuid_target"; | |
142 | const char * const config_element_target_gid = "gid_target"; | |
143 | const char * const config_element_target_vgid = "vgid_target"; | |
144 | const char * const config_element_tracker_type = "tracker_type"; | |
fb198a11 JG |
145 | |
146 | const char * const config_domain_type_kernel = "KERNEL"; | |
147 | const char * const config_domain_type_ust = "UST"; | |
148 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 149 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 150 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
151 | |
152 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
153 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
154 | const char * const config_buffer_type_global = "GLOBAL"; | |
155 | ||
156 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
157 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
158 | ||
159 | const char * const config_output_type_splice = "SPLICE"; | |
160 | const char * const config_output_type_mmap = "MMAP"; | |
161 | ||
162 | const char * const config_loglevel_type_all = "ALL"; | |
163 | const char * const config_loglevel_type_range = "RANGE"; | |
164 | const char * const config_loglevel_type_single = "SINGLE"; | |
165 | ||
166 | const char * const config_event_type_all = "ALL"; | |
167 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
168 | const char * const config_event_type_probe = "PROBE"; | |
169 | const char * const config_event_type_function = "FUNCTION"; | |
170 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
171 | const char * const config_event_type_noop = "NOOP"; | |
172 | const char * const config_event_type_syscall = "SYSCALL"; | |
173 | const char * const config_event_type_kprobe = "KPROBE"; | |
174 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
175 | ||
176 | const char * const config_event_context_pid = "PID"; | |
177 | const char * const config_event_context_procname = "PROCNAME"; | |
178 | const char * const config_event_context_prio = "PRIO"; | |
179 | const char * const config_event_context_nice = "NICE"; | |
180 | const char * const config_event_context_vpid = "VPID"; | |
181 | const char * const config_event_context_tid = "TID"; | |
182 | const char * const config_event_context_vtid = "VTID"; | |
183 | const char * const config_event_context_ppid = "PPID"; | |
184 | const char * const config_event_context_vppid = "VPPID"; | |
185 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
186 | const char * const config_event_context_hostname = "HOSTNAME"; | |
187 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 188 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
189 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
190 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
191 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
192 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
193 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
fb198a11 | 194 | |
fbd987c9 JG |
195 | /* Deprecated symbols */ |
196 | const char * const config_element_perf; | |
197 | ||
d7b645e2 JR |
198 | enum process_event_node_phase { |
199 | CREATION = 0, | |
200 | ENABLE = 1, | |
201 | }; | |
202 | ||
dcf266c0 JG |
203 | struct consumer_output { |
204 | int enabled; | |
205 | char *path; | |
206 | char *control_uri; | |
207 | char *data_uri; | |
208 | }; | |
209 | ||
1501a7f3 JG |
210 | static int config_entry_handler_filter(struct handler_filter_args *args, |
211 | const char *section, const char *name, const char *value) | |
212 | { | |
213 | int ret = 0; | |
214 | struct config_entry entry = { section, name, value }; | |
215 | ||
216 | assert(args); | |
217 | ||
218 | if (!section || !name || !value) { | |
219 | ret = -EIO; | |
220 | goto end; | |
221 | } | |
222 | ||
223 | if (args->section) { | |
224 | if (strcmp(args->section, section)) { | |
225 | goto end; | |
226 | } | |
227 | } | |
228 | ||
229 | ret = args->handler(&entry, args->user_data); | |
230 | end: | |
231 | return ret; | |
232 | } | |
233 | ||
234 | LTTNG_HIDDEN | |
235 | int config_get_section_entries(const char *override_path, const char *section, | |
236 | config_entry_handler_cb handler, void *user_data) | |
237 | { | |
238 | int ret = 0; | |
7ab02a27 | 239 | char *path; |
1501a7f3 JG |
240 | FILE *config_file = NULL; |
241 | struct handler_filter_args filter = { section, handler, user_data }; | |
242 | ||
7ab02a27 DG |
243 | /* First, try system-wide conf. file. */ |
244 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
245 | ||
246 | config_file = fopen(path, "r"); | |
247 | if (config_file) { | |
248 | DBG("Loading daemon conf file at %s", path); | |
249 | /* | |
250 | * Return value is not very important here since error or not, we | |
251 | * continue and try the next possible conf. file. | |
252 | */ | |
253 | (void) ini_parse_file(config_file, | |
254 | (ini_entry_handler) config_entry_handler_filter, | |
255 | (void *) &filter); | |
256 | fclose(config_file); | |
257 | } | |
258 | ||
259 | /* Second is the user local configuration. */ | |
260 | path = utils_get_home_dir(); | |
261 | if (path) { | |
262 | char fullpath[PATH_MAX]; | |
263 | ||
264 | ret = snprintf(fullpath, sizeof(fullpath), | |
265 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
266 | if (ret < 0) { | |
267 | PERROR("snprintf user conf. path"); | |
268 | goto error; | |
269 | } | |
270 | ||
271 | config_file = fopen(fullpath, "r"); | |
272 | if (config_file) { | |
273 | DBG("Loading daemon user conf file at %s", path); | |
274 | /* | |
275 | * Return value is not very important here since error or not, we | |
276 | * continue and try the next possible conf. file. | |
277 | */ | |
278 | (void) ini_parse_file(config_file, | |
279 | (ini_entry_handler) config_entry_handler_filter, | |
280 | (void *) &filter); | |
281 | fclose(config_file); | |
282 | } | |
283 | } | |
284 | ||
285 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
286 | if (override_path) { |
287 | config_file = fopen(override_path, "r"); | |
288 | if (config_file) { | |
7ab02a27 DG |
289 | DBG("Loading daemon command line conf file at %s", override_path); |
290 | (void) ini_parse_file(config_file, | |
291 | (ini_entry_handler) config_entry_handler_filter, | |
292 | (void *) &filter); | |
293 | fclose(config_file); | |
1501a7f3 JG |
294 | } else { |
295 | ERR("Failed to open daemon configuration file at %s", | |
296 | override_path); | |
297 | ret = -ENOENT; | |
7ab02a27 | 298 | goto error; |
1501a7f3 JG |
299 | } |
300 | } | |
301 | ||
7ab02a27 DG |
302 | /* Everything went well. */ |
303 | ret = 0; | |
1501a7f3 | 304 | |
7ab02a27 | 305 | error: |
1501a7f3 JG |
306 | return ret; |
307 | } | |
308 | ||
309 | LTTNG_HIDDEN | |
310 | int config_parse_value(const char *value) | |
311 | { | |
312 | int i, ret = 0; | |
313 | char *endptr, *lower_str; | |
314 | size_t len; | |
315 | unsigned long v; | |
316 | ||
317 | len = strlen(value); | |
318 | if (!len) { | |
319 | ret = -1; | |
320 | goto end; | |
321 | } | |
322 | ||
323 | v = strtoul(value, &endptr, 10); | |
324 | if (endptr != value) { | |
325 | ret = v; | |
326 | goto end; | |
327 | } | |
328 | ||
329 | lower_str = zmalloc(len + 1); | |
330 | if (!lower_str) { | |
331 | PERROR("zmalloc"); | |
332 | ret = -errno; | |
333 | goto end; | |
334 | } | |
335 | ||
336 | for (i = 0; i < len; i++) { | |
337 | lower_str[i] = tolower(value[i]); | |
338 | } | |
339 | ||
340 | if (!strcmp(lower_str, config_str_yes) || | |
341 | !strcmp(lower_str, config_str_true) || | |
342 | !strcmp(lower_str, config_str_on)) { | |
343 | ret = 1; | |
344 | } else if (!strcmp(lower_str, config_str_no) || | |
345 | !strcmp(lower_str, config_str_false) || | |
346 | !strcmp(lower_str, config_str_off)) { | |
347 | ret = 0; | |
348 | } else { | |
349 | ret = -1; | |
350 | } | |
351 | ||
352 | free(lower_str); | |
353 | end: | |
354 | return ret; | |
355 | } | |
36f2332b JG |
356 | |
357 | /* | |
358 | * Returns a xmlChar string which must be released using xmlFree(). | |
359 | */ | |
360 | static xmlChar *encode_string(const char *in_str) | |
361 | { | |
362 | xmlChar *out_str = NULL; | |
363 | xmlCharEncodingHandlerPtr handler; | |
364 | int out_len, ret, in_len; | |
365 | ||
366 | assert(in_str); | |
367 | ||
368 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
369 | if (!handler) { | |
370 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
371 | goto end; | |
372 | } | |
373 | ||
374 | in_len = strlen(in_str); | |
375 | /* | |
f76d886f JG |
376 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
377 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 378 | */ |
f76d886f | 379 | out_len = (in_len * 4) + 1; |
36f2332b JG |
380 | out_str = xmlMalloc(out_len); |
381 | if (!out_str) { | |
382 | goto end; | |
383 | } | |
384 | ||
385 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
386 | if (ret < 0) { | |
387 | xmlFree(out_str); | |
388 | out_str = NULL; | |
389 | goto end; | |
390 | } | |
391 | ||
392 | /* out_len is now the size of out_str */ | |
393 | out_str[out_len] = '\0'; | |
394 | end: | |
395 | return out_str; | |
396 | } | |
397 | ||
398 | LTTNG_HIDDEN | |
705bb62f | 399 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
400 | { |
401 | int ret; | |
402 | struct config_writer *writer; | |
403 | xmlOutputBufferPtr buffer; | |
404 | ||
405 | writer = zmalloc(sizeof(struct config_writer)); | |
406 | if (!writer) { | |
407 | PERROR("zmalloc config_writer_create"); | |
408 | goto end; | |
409 | } | |
410 | ||
411 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
412 | if (!buffer) { | |
413 | goto error_destroy; | |
414 | } | |
415 | ||
416 | writer->writer = xmlNewTextWriter(buffer); | |
417 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
418 | config_xml_encoding, NULL); | |
419 | if (ret < 0) { | |
420 | goto error_destroy; | |
421 | } | |
422 | ||
423 | ret = xmlTextWriterSetIndentString(writer->writer, | |
424 | BAD_CAST config_xml_indent_string); | |
705bb62f | 425 | if (ret) { |
36f2332b JG |
426 | goto error_destroy; |
427 | } | |
428 | ||
705bb62f JRJ |
429 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
430 | if (ret) { | |
36f2332b JG |
431 | goto error_destroy; |
432 | } | |
433 | ||
434 | end: | |
435 | return writer; | |
436 | error_destroy: | |
437 | config_writer_destroy(writer); | |
438 | return NULL; | |
439 | } | |
440 | ||
441 | LTTNG_HIDDEN | |
442 | int config_writer_destroy(struct config_writer *writer) | |
443 | { | |
444 | int ret = 0; | |
445 | ||
446 | if (!writer) { | |
447 | ret = -EINVAL; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
452 | WARN("Could not close XML document"); | |
453 | ret = -EIO; | |
454 | } | |
455 | ||
456 | if (writer->writer) { | |
457 | xmlFreeTextWriter(writer->writer); | |
458 | } | |
459 | ||
460 | free(writer); | |
461 | end: | |
462 | return ret; | |
463 | } | |
464 | ||
465 | LTTNG_HIDDEN | |
466 | int config_writer_open_element(struct config_writer *writer, | |
467 | const char *element_name) | |
468 | { | |
469 | int ret; | |
470 | xmlChar *encoded_element_name; | |
471 | ||
472 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
473 | ret = -1; | |
474 | goto end; | |
475 | } | |
476 | ||
477 | encoded_element_name = encode_string(element_name); | |
478 | if (!encoded_element_name) { | |
479 | ret = -1; | |
480 | goto end; | |
481 | } | |
482 | ||
483 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
484 | xmlFree(encoded_element_name); | |
485 | end: | |
28676a1d | 486 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
487 | } |
488 | ||
e10b6a1c JG |
489 | LTTNG_HIDDEN |
490 | int config_writer_write_attribute(struct config_writer *writer, | |
491 | const char *name, const char *value) | |
492 | { | |
493 | int ret; | |
494 | xmlChar *encoded_name = NULL; | |
495 | xmlChar *encoded_value = NULL; | |
496 | ||
497 | if (!writer || !writer->writer || !name || !name[0]) { | |
498 | ret = -1; | |
499 | goto end; | |
500 | } | |
501 | ||
502 | encoded_name = encode_string(name); | |
503 | if (!encoded_name) { | |
504 | ret = -1; | |
505 | goto end; | |
506 | } | |
507 | ||
508 | encoded_value = encode_string(value); | |
509 | if (!encoded_value) { | |
510 | ret = -1; | |
511 | goto end; | |
512 | } | |
513 | ||
514 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
515 | encoded_value); | |
516 | end: | |
517 | xmlFree(encoded_name); | |
518 | xmlFree(encoded_value); | |
519 | return ret >= 0 ? 0 : ret; | |
520 | } | |
521 | ||
36f2332b JG |
522 | LTTNG_HIDDEN |
523 | int config_writer_close_element(struct config_writer *writer) | |
524 | { | |
525 | int ret; | |
526 | ||
527 | if (!writer || !writer->writer) { | |
528 | ret = -1; | |
529 | goto end; | |
530 | } | |
531 | ||
532 | ret = xmlTextWriterEndElement(writer->writer); | |
533 | end: | |
28676a1d | 534 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
535 | } |
536 | ||
537 | LTTNG_HIDDEN | |
538 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
539 | const char *element_name, uint64_t value) | |
540 | { | |
541 | int ret; | |
542 | xmlChar *encoded_element_name; | |
543 | ||
544 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
545 | ret = -1; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | encoded_element_name = encode_string(element_name); | |
550 | if (!encoded_element_name) { | |
551 | ret = -1; | |
552 | goto end; | |
553 | } | |
554 | ||
555 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
556 | encoded_element_name, "%" PRIu64, value); | |
557 | xmlFree(encoded_element_name); | |
558 | end: | |
28676a1d | 559 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
560 | } |
561 | ||
562 | LTTNG_HIDDEN | |
563 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
564 | const char *element_name, int64_t value) | |
565 | { | |
566 | int ret; | |
567 | xmlChar *encoded_element_name; | |
568 | ||
569 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
570 | ret = -1; | |
571 | goto end; | |
572 | } | |
573 | ||
574 | encoded_element_name = encode_string(element_name); | |
575 | if (!encoded_element_name) { | |
576 | ret = -1; | |
577 | goto end; | |
578 | } | |
579 | ||
580 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
581 | encoded_element_name, "%" PRIi64, value); | |
582 | xmlFree(encoded_element_name); | |
583 | end: | |
28676a1d | 584 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
585 | } |
586 | ||
587 | LTTNG_HIDDEN | |
588 | int config_writer_write_element_bool(struct config_writer *writer, | |
589 | const char *element_name, int value) | |
590 | { | |
591 | return config_writer_write_element_string(writer, element_name, | |
592 | value ? config_xml_true : config_xml_false); | |
593 | } | |
594 | ||
595 | LTTNG_HIDDEN | |
596 | int config_writer_write_element_string(struct config_writer *writer, | |
597 | const char *element_name, const char *value) | |
598 | { | |
599 | int ret; | |
600 | xmlChar *encoded_element_name = NULL; | |
601 | xmlChar *encoded_value = NULL; | |
602 | ||
603 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
604 | !value) { | |
605 | ret = -1; | |
606 | goto end; | |
607 | } | |
608 | ||
609 | encoded_element_name = encode_string(element_name); | |
610 | if (!encoded_element_name) { | |
611 | ret = -1; | |
612 | goto end; | |
613 | } | |
614 | ||
615 | encoded_value = encode_string(value); | |
616 | if (!encoded_value) { | |
617 | ret = -1; | |
618 | goto end; | |
619 | } | |
620 | ||
621 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 622 | encoded_value); |
36f2332b JG |
623 | end: |
624 | xmlFree(encoded_element_name); | |
625 | xmlFree(encoded_value); | |
28676a1d | 626 | return ret >= 0 ? 0 : ret; |
36f2332b | 627 | } |
dcf266c0 JG |
628 | |
629 | static | |
630 | void xml_error_handler(void *ctx, const char *format, ...) | |
631 | { | |
632 | char *errMsg; | |
633 | va_list args; | |
634 | int ret; | |
635 | ||
636 | va_start(args, format); | |
637 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 638 | va_end(args); |
dcf266c0 JG |
639 | if (ret == -1) { |
640 | ERR("String allocation failed in xml error handler"); | |
641 | return; | |
642 | } | |
dcf266c0 JG |
643 | |
644 | fprintf(stderr, "XML Error: %s", errMsg); | |
645 | free(errMsg); | |
646 | } | |
647 | ||
648 | static | |
649 | void fini_session_config_validation_ctx( | |
650 | struct session_config_validation_ctx *ctx) | |
651 | { | |
652 | if (ctx->parser_ctx) { | |
653 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
654 | } | |
655 | ||
656 | if (ctx->schema) { | |
657 | xmlSchemaFree(ctx->schema); | |
658 | } | |
659 | ||
660 | if (ctx->schema_validation_ctx) { | |
661 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
662 | } | |
663 | ||
664 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
665 | } | |
666 | ||
54e399cb JG |
667 | static |
668 | char *get_session_config_xsd_path() | |
669 | { | |
670 | char *xsd_path; | |
e8fa9fb0 | 671 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
672 | size_t base_path_len; |
673 | size_t max_path_len; | |
674 | ||
675 | if (!base_path) { | |
676 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
677 | } | |
678 | ||
679 | base_path_len = strlen(base_path); | |
680 | max_path_len = base_path_len + | |
681 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
682 | xsd_path = zmalloc(max_path_len); | |
683 | if (!xsd_path) { | |
684 | goto end; | |
685 | } | |
686 | ||
687 | strncpy(xsd_path, base_path, max_path_len); | |
688 | if (xsd_path[base_path_len - 1] != '/') { | |
689 | xsd_path[base_path_len++] = '/'; | |
690 | } | |
691 | ||
692 | strncpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME, | |
693 | max_path_len - base_path_len); | |
694 | end: | |
695 | return xsd_path; | |
696 | } | |
697 | ||
dcf266c0 JG |
698 | static |
699 | int init_session_config_validation_ctx( | |
700 | struct session_config_validation_ctx *ctx) | |
701 | { | |
702 | int ret; | |
54e399cb JG |
703 | char *xsd_path = get_session_config_xsd_path(); |
704 | ||
705 | if (!xsd_path) { | |
706 | ret = -LTTNG_ERR_NOMEM; | |
707 | goto end; | |
708 | } | |
dcf266c0 | 709 | |
54e399cb | 710 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
711 | if (!ctx->parser_ctx) { |
712 | ERR("XSD parser context creation failed"); | |
713 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
714 | goto end; | |
715 | } | |
716 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
717 | xml_error_handler, NULL); | |
718 | ||
719 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
720 | if (!ctx->schema) { | |
721 | ERR("XSD parsing failed"); | |
722 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
723 | goto end; | |
724 | } | |
725 | ||
726 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
727 | if (!ctx->schema_validation_ctx) { | |
728 | ERR("XSD validation context creation failed"); | |
729 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
730 | goto end; | |
731 | } | |
732 | ||
733 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
734 | xml_error_handler, NULL); | |
735 | ret = 0; | |
736 | ||
737 | end: | |
738 | if (ret) { | |
739 | fini_session_config_validation_ctx(ctx); | |
740 | } | |
741 | ||
54e399cb | 742 | free(xsd_path); |
dcf266c0 JG |
743 | return ret; |
744 | } | |
745 | ||
746 | static | |
747 | int parse_uint(xmlChar *str, uint64_t *val) | |
748 | { | |
749 | int ret; | |
750 | char *endptr; | |
751 | ||
752 | if (!str || !val) { | |
753 | ret = -1; | |
754 | goto end; | |
755 | } | |
756 | ||
757 | *val = strtoull((const char *) str, &endptr, 10); | |
758 | if (!endptr || *endptr) { | |
759 | ret = -1; | |
760 | } else { | |
761 | ret = 0; | |
762 | } | |
763 | ||
764 | end: | |
765 | return ret; | |
766 | } | |
767 | ||
768 | static | |
769 | int parse_int(xmlChar *str, int64_t *val) | |
770 | { | |
771 | int ret; | |
772 | char *endptr; | |
773 | ||
774 | if (!str || !val) { | |
775 | ret = -1; | |
776 | goto end; | |
777 | } | |
778 | ||
779 | *val = strtoll((const char *) str, &endptr, 10); | |
780 | if (!endptr || *endptr) { | |
781 | ret = -1; | |
782 | } else { | |
783 | ret = 0; | |
784 | } | |
785 | ||
786 | end: | |
787 | return ret; | |
788 | } | |
789 | ||
790 | static | |
791 | int parse_bool(xmlChar *str, int *val) | |
792 | { | |
793 | int ret = 0; | |
794 | ||
795 | if (!str || !val) { | |
796 | ret = -1; | |
797 | goto end; | |
798 | } | |
799 | ||
800 | if (!strcmp((const char *) str, config_xml_true)) { | |
801 | *val = 1; | |
802 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
803 | *val = 0; | |
804 | } else { | |
805 | WARN("Invalid boolean value encoutered (%s).", | |
806 | (const char *) str); | |
807 | ret = -1; | |
808 | } | |
809 | end: | |
810 | return ret; | |
811 | } | |
812 | ||
813 | static | |
814 | int get_domain_type(xmlChar *domain) | |
815 | { | |
816 | int ret; | |
817 | ||
818 | if (!domain) { | |
819 | goto error; | |
820 | } | |
821 | ||
822 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
823 | ret = LTTNG_DOMAIN_KERNEL; | |
824 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
825 | ret = LTTNG_DOMAIN_UST; | |
826 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
827 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
828 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
829 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
830 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
831 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
832 | } else { |
833 | goto error; | |
834 | } | |
835 | ||
836 | return ret; | |
837 | error: | |
838 | return -1; | |
839 | } | |
840 | ||
841 | static | |
842 | int get_buffer_type(xmlChar *buffer_type) | |
843 | { | |
844 | int ret; | |
845 | ||
846 | if (!buffer_type) { | |
847 | goto error; | |
848 | } | |
849 | ||
850 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
851 | ret = LTTNG_BUFFER_GLOBAL; | |
852 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
853 | ret = LTTNG_BUFFER_PER_UID; | |
854 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
855 | ret = LTTNG_BUFFER_PER_PID; | |
856 | } else { | |
857 | goto error; | |
858 | } | |
859 | ||
860 | return ret; | |
861 | error: | |
862 | return -1; | |
863 | } | |
864 | ||
865 | static | |
866 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
867 | { | |
868 | int ret; | |
869 | ||
870 | if (!overwrite_mode) { | |
871 | goto error; | |
872 | } | |
873 | ||
874 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
875 | ret = 1; | |
876 | } else if (!strcmp((char *) overwrite_mode, | |
877 | config_overwrite_mode_discard)) { | |
878 | ret = 0; | |
879 | } else { | |
880 | goto error; | |
881 | } | |
882 | ||
883 | return ret; | |
884 | error: | |
885 | return -1; | |
886 | } | |
887 | ||
888 | static | |
889 | int get_output_type(xmlChar *output_type) | |
890 | { | |
891 | int ret; | |
892 | ||
893 | if (!output_type) { | |
894 | goto error; | |
895 | } | |
896 | ||
897 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
898 | ret = LTTNG_EVENT_MMAP; | |
899 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
900 | ret = LTTNG_EVENT_SPLICE; | |
901 | } else { | |
902 | goto error; | |
903 | } | |
904 | ||
905 | return ret; | |
906 | error: | |
907 | return -1; | |
908 | } | |
909 | ||
910 | static | |
911 | int get_event_type(xmlChar *event_type) | |
912 | { | |
913 | int ret; | |
914 | ||
915 | if (!event_type) { | |
916 | goto error; | |
917 | } | |
918 | ||
919 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
920 | ret = LTTNG_EVENT_ALL; | |
921 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
922 | ret = LTTNG_EVENT_TRACEPOINT; | |
923 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
924 | ret = LTTNG_EVENT_PROBE; | |
925 | } else if (!strcmp((char *) event_type, config_event_type_function)) { | |
926 | ret = LTTNG_EVENT_FUNCTION; | |
927 | } else if (!strcmp((char *) event_type, | |
928 | config_event_type_function_entry)) { | |
929 | ret = LTTNG_EVENT_FUNCTION_ENTRY; | |
930 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
931 | ret = LTTNG_EVENT_NOOP; | |
932 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
933 | ret = LTTNG_EVENT_SYSCALL; | |
934 | } else { | |
935 | goto error; | |
936 | } | |
937 | ||
938 | return ret; | |
939 | error: | |
940 | return -1; | |
941 | } | |
942 | ||
943 | static | |
944 | int get_loglevel_type(xmlChar *loglevel_type) | |
945 | { | |
946 | int ret; | |
947 | ||
948 | if (!loglevel_type) { | |
949 | goto error; | |
950 | } | |
951 | ||
952 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
953 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
954 | } else if (!strcmp((char *) loglevel_type, | |
955 | config_loglevel_type_range)) { | |
956 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
957 | } else if (!strcmp((char *) loglevel_type, | |
958 | config_loglevel_type_single)) { | |
959 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
960 | } else { | |
961 | goto error; | |
962 | } | |
963 | ||
964 | return ret; | |
965 | error: | |
966 | return -1; | |
967 | } | |
968 | ||
969 | /* | |
970 | * Return the context type or -1 on error. | |
971 | */ | |
972 | static | |
973 | int get_context_type(xmlChar *context_type) | |
974 | { | |
975 | int ret; | |
976 | ||
977 | if (!context_type) { | |
978 | goto error; | |
979 | } | |
980 | ||
981 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
982 | ret = LTTNG_EVENT_CONTEXT_PID; | |
983 | } else if (!strcmp((char *) context_type, | |
984 | config_event_context_procname)) { | |
985 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
986 | } else if (!strcmp((char *) context_type, | |
987 | config_event_context_prio)) { | |
988 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
989 | } else if (!strcmp((char *) context_type, | |
990 | config_event_context_nice)) { | |
991 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
992 | } else if (!strcmp((char *) context_type, | |
993 | config_event_context_vpid)) { | |
994 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
995 | } else if (!strcmp((char *) context_type, | |
996 | config_event_context_tid)) { | |
997 | ret = LTTNG_EVENT_CONTEXT_TID; | |
998 | } else if (!strcmp((char *) context_type, | |
999 | config_event_context_vtid)) { | |
1000 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1001 | } else if (!strcmp((char *) context_type, | |
1002 | config_event_context_ppid)) { | |
1003 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1004 | } else if (!strcmp((char *) context_type, | |
1005 | config_event_context_vppid)) { | |
1006 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1007 | } else if (!strcmp((char *) context_type, | |
1008 | config_event_context_pthread_id)) { | |
1009 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1010 | } else if (!strcmp((char *) context_type, | |
1011 | config_event_context_hostname)) { | |
1012 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1013 | } else if (!strcmp((char *) context_type, | |
1014 | config_event_context_ip)) { | |
1015 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1016 | } else if (!strcmp((char *) context_type, |
1017 | config_event_context_interruptible)) { | |
1018 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1019 | } else if (!strcmp((char *) context_type, | |
1020 | config_event_context_preemptible)) { | |
1021 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1022 | } else if (!strcmp((char *) context_type, | |
1023 | config_event_context_need_reschedule)) { | |
1024 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1025 | } else if (!strcmp((char *) context_type, | |
1026 | config_event_context_migratable)) { | |
1027 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
dcf266c0 JG |
1028 | } else { |
1029 | goto error; | |
1030 | } | |
1031 | ||
1032 | return ret; | |
1033 | error: | |
1034 | return -1; | |
1035 | } | |
1036 | ||
1037 | static | |
1038 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1039 | { | |
1040 | int ret; | |
1041 | xmlNodePtr node; | |
1042 | ||
1043 | for (node = xmlFirstElementChild(domain_node); node; | |
1044 | node = xmlNextElementSibling(node)) { | |
1045 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1046 | /* domain type */ | |
1047 | xmlChar *node_content = xmlNodeGetContent(node); | |
1048 | if (!node_content) { | |
1049 | ret = -LTTNG_ERR_NOMEM; | |
1050 | goto end; | |
1051 | } | |
1052 | ||
1053 | ret = get_domain_type(node_content); | |
1054 | free(node_content); | |
1055 | if (ret < 0) { | |
1056 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1057 | goto end; | |
1058 | } | |
1059 | ||
1060 | domain->type = ret; | |
1061 | } else if (!strcmp((const char *) node->name, | |
1062 | config_element_buffer_type)) { | |
1063 | /* buffer type */ | |
1064 | xmlChar *node_content = xmlNodeGetContent(node); | |
1065 | if (!node_content) { | |
1066 | ret = -LTTNG_ERR_NOMEM; | |
1067 | goto end; | |
1068 | } | |
1069 | ||
1070 | ret = get_buffer_type(node_content); | |
1071 | free(node_content); | |
1072 | if (ret < 0) { | |
1073 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1074 | goto end; | |
1075 | } | |
1076 | ||
1077 | domain->buf_type = ret; | |
1078 | } | |
1079 | } | |
1080 | ret = 0; | |
1081 | end: | |
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | static | |
1086 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1087 | char **data_uri) | |
1088 | { | |
1089 | xmlNodePtr node; | |
1090 | ||
1091 | for (node = xmlFirstElementChild(net_output_node); node; | |
1092 | node = xmlNextElementSibling(node)) { | |
1093 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1094 | /* control_uri */ | |
1095 | *control_uri = (char *) xmlNodeGetContent(node); | |
1096 | if (!*control_uri) { | |
1097 | break; | |
1098 | } | |
1099 | } else { | |
1100 | /* data_uri */ | |
1101 | *data_uri = (char *) xmlNodeGetContent(node); | |
1102 | if (!*data_uri) { | |
1103 | break; | |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1109 | } | |
1110 | ||
1111 | static | |
1112 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1113 | struct consumer_output *output) | |
1114 | { | |
1115 | int ret; | |
1116 | xmlNodePtr node; | |
1117 | ||
1118 | assert(output); | |
1119 | ||
1120 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1121 | node = xmlNextElementSibling(node)) { | |
1122 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1123 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1124 | ||
1125 | /* enabled */ | |
1126 | if (!enabled_str) { | |
1127 | ret = -LTTNG_ERR_NOMEM; | |
1128 | goto end; | |
1129 | } | |
1130 | ||
1131 | ret = parse_bool(enabled_str, &output->enabled); | |
1132 | free(enabled_str); | |
1133 | if (ret) { | |
1134 | goto end; | |
1135 | } | |
1136 | } else { | |
1137 | xmlNodePtr output_type_node; | |
1138 | ||
1139 | /* destination */ | |
1140 | output_type_node = xmlFirstElementChild(node); | |
1141 | if (!output_type_node) { | |
1142 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1143 | goto end; | |
1144 | } | |
1145 | ||
1146 | if (!strcmp((const char *) output_type_node->name, | |
1147 | config_element_path)) { | |
1148 | /* path */ | |
1149 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1150 | if (!output->path) { | |
1151 | ret = -LTTNG_ERR_NOMEM; | |
1152 | goto end; | |
1153 | } | |
1154 | } else { | |
1155 | /* net_output */ | |
1156 | ret = get_net_output_uris(output_type_node, | |
1157 | &output->control_uri, &output->data_uri); | |
1158 | if (ret) { | |
1159 | goto end; | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | } | |
1164 | ret = 0; | |
1165 | ||
1166 | end: | |
1167 | if (ret) { | |
1168 | free(output->path); | |
1169 | free(output->control_uri); | |
1170 | free(output->data_uri); | |
1171 | memset(output, 0, sizeof(struct consumer_output)); | |
1172 | } | |
1173 | return ret; | |
1174 | } | |
1175 | ||
1176 | static | |
95681498 JG |
1177 | int create_session_net_output(const char *name, const char *control_uri, |
1178 | const char *data_uri) | |
dcf266c0 JG |
1179 | { |
1180 | int ret; | |
1181 | struct lttng_handle *handle; | |
1182 | const char *uri = NULL; | |
1183 | ||
1184 | assert(name); | |
dcf266c0 | 1185 | |
95681498 | 1186 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1187 | if (!handle) { |
1188 | ret = -LTTNG_ERR_NOMEM; | |
1189 | goto end; | |
1190 | } | |
1191 | ||
1192 | if (!control_uri || !data_uri) { | |
1193 | uri = control_uri ? control_uri : data_uri; | |
1194 | control_uri = uri; | |
1195 | data_uri = uri; | |
1196 | } | |
1197 | ||
1198 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1199 | lttng_destroy_handle(handle); | |
1200 | end: | |
1201 | return ret; | |
1202 | } | |
1203 | ||
1204 | static | |
1b08cbce JR |
1205 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1206 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1207 | { |
1208 | int ret; | |
1209 | xmlNodePtr node = NULL; | |
1210 | xmlNodePtr snapshot_output_list_node; | |
1211 | xmlNodePtr snapshot_output_node; | |
1212 | ||
1213 | assert(session_name); | |
1214 | ||
1215 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1216 | if (ret) { | |
1217 | goto end; | |
1218 | } | |
1219 | ||
1220 | if (!output_node) { | |
1221 | goto end; | |
1222 | } | |
1223 | ||
1224 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1225 | ||
1226 | /* Parse and create snapshot outputs */ | |
1227 | ||
1228 | for (snapshot_output_node = | |
1229 | xmlFirstElementChild(snapshot_output_list_node); | |
1230 | snapshot_output_node; snapshot_output_node = | |
1231 | xmlNextElementSibling(snapshot_output_node)) { | |
1232 | char *name = NULL; | |
1233 | uint64_t max_size = UINT64_MAX; | |
1234 | struct consumer_output output = { 0 }; | |
1235 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1236 | const char *control_uri = NULL; |
1237 | const char *data_uri = NULL; | |
1238 | const char *path = NULL; | |
dcf266c0 JG |
1239 | |
1240 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1241 | node = xmlNextElementSibling(node)) { | |
1242 | if (!strcmp((const char *) node->name, | |
1243 | config_element_name)) { | |
1244 | /* name */ | |
1245 | name = (char *) xmlNodeGetContent(node); | |
1246 | if (!name) { | |
1247 | ret = -LTTNG_ERR_NOMEM; | |
1248 | goto error_snapshot_output; | |
1249 | } | |
1250 | } else if (!strcmp((const char *) node->name, | |
1251 | config_element_max_size)) { | |
1252 | xmlChar *content = xmlNodeGetContent(node); | |
1253 | ||
1254 | /* max_size */ | |
1255 | if (!content) { | |
1256 | ret = -LTTNG_ERR_NOMEM; | |
1257 | goto error_snapshot_output; | |
1258 | } | |
1259 | ret = parse_uint(content, &max_size); | |
1260 | free(content); | |
1261 | if (ret) { | |
1262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1263 | goto error_snapshot_output; | |
1264 | } | |
1265 | } else { | |
1266 | /* consumer_output */ | |
1267 | ret = process_consumer_output(node, &output); | |
1268 | if (ret) { | |
1269 | goto error_snapshot_output; | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | ||
00d78798 JR |
1274 | control_uri = output.control_uri; |
1275 | data_uri = output.data_uri; | |
1276 | path = output.path; | |
1277 | ||
1b08cbce JR |
1278 | if (overrides) { |
1279 | if (overrides->path_url) { | |
1b08cbce | 1280 | path = overrides->path_url; |
00d78798 JR |
1281 | /* Control/data_uri are null */ |
1282 | control_uri = NULL; | |
1283 | data_uri = NULL; | |
1b08cbce JR |
1284 | } else { |
1285 | if (overrides->ctrl_url) { | |
1b08cbce | 1286 | control_uri = overrides->ctrl_url; |
00d78798 JR |
1287 | /* path is null */ |
1288 | path = NULL; | |
1b08cbce JR |
1289 | } |
1290 | if (overrides->data_url) { | |
1b08cbce | 1291 | data_uri = overrides->data_url; |
00d78798 JR |
1292 | /* path is null */ |
1293 | path = NULL; | |
1b08cbce JR |
1294 | } |
1295 | } | |
1b08cbce JR |
1296 | } |
1297 | ||
dcf266c0 JG |
1298 | snapshot_output = lttng_snapshot_output_create(); |
1299 | if (!snapshot_output) { | |
1300 | ret = -LTTNG_ERR_NOMEM; | |
1301 | goto error_snapshot_output; | |
1302 | } | |
1303 | ||
1304 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1305 | if (ret) { | |
1306 | goto error_snapshot_output; | |
1307 | } | |
1308 | ||
1309 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1310 | if (ret) { | |
1311 | goto error_snapshot_output; | |
1312 | } | |
1313 | ||
1b08cbce JR |
1314 | if (path) { |
1315 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1316 | snapshot_output); |
1317 | if (ret) { | |
1318 | goto error_snapshot_output; | |
1319 | } | |
1320 | } else { | |
1b08cbce JR |
1321 | if (control_uri) { |
1322 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1323 | snapshot_output); |
1324 | if (ret) { | |
1325 | goto error_snapshot_output; | |
1326 | } | |
1327 | } | |
1328 | ||
1b08cbce JR |
1329 | if (data_uri) { |
1330 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1331 | snapshot_output); |
1332 | if (ret) { | |
1333 | goto error_snapshot_output; | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1339 | error_snapshot_output: | |
1340 | free(name); | |
1341 | free(output.path); | |
1342 | free(output.control_uri); | |
1343 | free(output.data_uri); | |
1344 | lttng_snapshot_output_destroy(snapshot_output); | |
1345 | if (ret) { | |
1346 | goto end; | |
1347 | } | |
1348 | } | |
1349 | end: | |
1350 | return ret; | |
1351 | } | |
1352 | ||
1353 | static | |
1354 | int create_session(const char *name, | |
1355 | struct lttng_domain *kernel_domain, | |
1356 | struct lttng_domain *ust_domain, | |
1357 | struct lttng_domain *jul_domain, | |
5cdb6027 | 1358 | struct lttng_domain *log4j_domain, |
dcf266c0 | 1359 | xmlNodePtr output_node, |
1b08cbce JR |
1360 | uint64_t live_timer_interval, |
1361 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1362 | { |
1363 | int ret; | |
1364 | struct consumer_output output = { 0 }; | |
1365 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1366 | const char *control_uri = NULL; |
1367 | const char *data_uri = NULL; | |
1368 | const char *path = NULL; | |
dcf266c0 JG |
1369 | |
1370 | assert(name); | |
dcf266c0 JG |
1371 | |
1372 | if (output_node) { | |
1373 | consumer_output_node = xmlFirstElementChild(output_node); | |
1374 | if (!consumer_output_node) { | |
1375 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1376 | goto end; | |
1377 | } | |
1378 | ||
1379 | if (strcmp((const char *) consumer_output_node->name, | |
1380 | config_element_consumer_output)) { | |
1381 | WARN("Invalid output type, expected %s node", | |
1382 | config_element_consumer_output); | |
1383 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1384 | goto end; | |
1385 | } | |
1386 | ||
1387 | ret = process_consumer_output(consumer_output_node, &output); | |
1388 | if (ret) { | |
1389 | goto end; | |
1390 | } | |
1391 | } | |
1392 | ||
00d78798 JR |
1393 | control_uri = output.control_uri; |
1394 | data_uri = output.data_uri; | |
1395 | path = output.path; | |
1396 | ||
1b08cbce JR |
1397 | /* Check for override and apply them */ |
1398 | if (overrides) { | |
1399 | if (overrides->path_url) { | |
1b08cbce | 1400 | path = overrides->path_url; |
00d78798 JR |
1401 | /* control/data_uri are null */; |
1402 | control_uri = NULL; | |
1403 | data_uri = NULL; | |
1b08cbce JR |
1404 | } else { |
1405 | if (overrides->ctrl_url) { | |
1b08cbce | 1406 | control_uri = overrides->ctrl_url; |
00d78798 JR |
1407 | /* path is null */ |
1408 | path = NULL; | |
1b08cbce JR |
1409 | } |
1410 | if (overrides->data_url) { | |
1b08cbce | 1411 | data_uri = overrides->data_url; |
00d78798 JR |
1412 | /* path is null */ |
1413 | path = NULL; | |
1b08cbce JR |
1414 | } |
1415 | } | |
1b08cbce JR |
1416 | } |
1417 | ||
00d78798 | 1418 | |
1b08cbce | 1419 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1420 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1421 | goto end; | |
1422 | } | |
1423 | ||
1b08cbce | 1424 | if (control_uri || data_uri) { |
dcf266c0 JG |
1425 | /* network destination */ |
1426 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1427 | /* |
1428 | * URLs are provided for sure since the test above make sure that | |
1429 | * with a live timer the data and control URIs are provided. So, | |
1430 | * NULL is passed here and will be set right after. | |
1431 | */ | |
1432 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1433 | } else { |
1434 | ret = lttng_create_session(name, NULL); | |
1435 | } | |
1436 | if (ret) { | |
1437 | goto end; | |
1438 | } | |
1439 | ||
1b08cbce | 1440 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1441 | if (ret) { |
1442 | goto end; | |
dcf266c0 | 1443 | } |
95681498 | 1444 | |
dcf266c0 JG |
1445 | } else { |
1446 | /* either local output or no output */ | |
1b08cbce | 1447 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1448 | if (ret) { |
1449 | goto end; | |
1450 | } | |
1451 | } | |
1452 | end: | |
1453 | free(output.path); | |
1454 | free(output.control_uri); | |
1455 | free(output.data_uri); | |
1456 | return ret; | |
1457 | } | |
1458 | static | |
1459 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1460 | struct lttng_event_probe_attr *attr) | |
1461 | { | |
1462 | int ret; | |
1463 | ||
1464 | assert(probe_attribute_node); | |
1465 | assert(attr); | |
1466 | ||
1467 | if (!strcmp((const char *) probe_attribute_node->name, | |
1468 | config_element_address)) { | |
1469 | xmlChar *content; | |
1470 | uint64_t addr = 0; | |
1471 | ||
1472 | /* addr */ | |
1473 | content = xmlNodeGetContent(probe_attribute_node); | |
1474 | if (!content) { | |
1475 | ret = -LTTNG_ERR_NOMEM; | |
1476 | goto end; | |
1477 | } | |
1478 | ||
1479 | ret = parse_uint(content, &addr); | |
1480 | free(content); | |
1481 | if (ret) { | |
1482 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1483 | goto end; | |
1484 | } | |
1485 | ||
1486 | attr->addr = addr; | |
1487 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1488 | config_element_offset)) { | |
1489 | xmlChar *content; | |
1490 | uint64_t offset = 0; | |
1491 | ||
1492 | /* offset */ | |
1493 | content = xmlNodeGetContent(probe_attribute_node); | |
1494 | if (!content) { | |
1495 | ret = -LTTNG_ERR_NOMEM; | |
1496 | goto end; | |
1497 | } | |
1498 | ||
1499 | ret = parse_uint(content, &offset); | |
1500 | free(content); | |
1501 | if (ret) { | |
1502 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1503 | goto end; | |
1504 | } | |
1505 | ||
1506 | attr->offset = offset; | |
1507 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1508 | config_element_symbol_name)) { | |
1509 | xmlChar *content; | |
1510 | size_t name_len; | |
1511 | ||
1512 | /* symbol_name */ | |
1513 | content = xmlNodeGetContent(probe_attribute_node); | |
1514 | if (!content) { | |
1515 | ret = -LTTNG_ERR_NOMEM; | |
1516 | goto end; | |
1517 | } | |
1518 | ||
1519 | name_len = strlen((char *) content); | |
1520 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1521 | WARN("symbol_name too long."); | |
1522 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1523 | free(content); | |
1524 | goto end; | |
1525 | } | |
1526 | ||
1527 | strncpy(attr->symbol_name, (const char *) content, name_len); | |
1528 | free(content); | |
1529 | } | |
1530 | ret = 0; | |
1531 | end: | |
1532 | return ret; | |
1533 | } | |
1534 | ||
1535 | static | |
1536 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1537 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1538 | { |
d7b645e2 | 1539 | int ret = 0, i; |
dcf266c0 JG |
1540 | xmlNodePtr node; |
1541 | struct lttng_event event; | |
1542 | char **exclusions = NULL; | |
1543 | unsigned long exclusion_count = 0; | |
1544 | char *filter_expression = NULL; | |
1545 | ||
1546 | assert(event_node); | |
1547 | assert(handle); | |
1548 | assert(channel_name); | |
1549 | ||
1550 | memset(&event, 0, sizeof(event)); | |
1551 | ||
f40eba3d JG |
1552 | /* Initialize default log level which varies by domain */ |
1553 | switch (handle->domain.type) | |
1554 | { | |
1555 | case LTTNG_DOMAIN_JUL: | |
1556 | event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; | |
1557 | break; | |
1558 | case LTTNG_DOMAIN_LOG4J: | |
1559 | event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; | |
1560 | break; | |
1561 | case LTTNG_DOMAIN_PYTHON: | |
1562 | event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; | |
1563 | break; | |
1564 | case LTTNG_DOMAIN_UST: | |
1565 | case LTTNG_DOMAIN_KERNEL: | |
1566 | event.loglevel = LTTNG_LOGLEVEL_DEBUG; | |
1567 | break; | |
1568 | default: | |
1569 | assert(0); | |
1570 | } | |
1571 | ||
dcf266c0 JG |
1572 | for (node = xmlFirstElementChild(event_node); node; |
1573 | node = xmlNextElementSibling(node)) { | |
1574 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1575 | xmlChar *content; | |
1576 | size_t name_len; | |
1577 | ||
1578 | /* name */ | |
1579 | content = xmlNodeGetContent(node); | |
1580 | if (!content) { | |
1581 | ret = -LTTNG_ERR_NOMEM; | |
1582 | goto end; | |
1583 | } | |
1584 | ||
1585 | name_len = strlen((char *) content); | |
1586 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1587 | WARN("Channel name too long."); | |
1588 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1589 | free(content); | |
1590 | goto end; | |
1591 | } | |
1592 | ||
1593 | strncpy(event.name, (const char *) content, name_len); | |
1594 | free(content); | |
1595 | } else if (!strcmp((const char *) node->name, | |
1596 | config_element_enabled)) { | |
1597 | xmlChar *content = xmlNodeGetContent(node); | |
1598 | ||
1599 | /* enabled */ | |
1600 | if (!content) { | |
1601 | ret = -LTTNG_ERR_NOMEM; | |
1602 | goto end; | |
1603 | } | |
1604 | ||
1605 | ret = parse_bool(content, &event.enabled); | |
1606 | free(content); | |
1607 | if (ret) { | |
1608 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1609 | goto end; | |
1610 | } | |
1611 | } else if (!strcmp((const char *) node->name, | |
1612 | config_element_type)) { | |
1613 | xmlChar *content = xmlNodeGetContent(node); | |
1614 | ||
1615 | /* type */ | |
1616 | if (!content) { | |
1617 | ret = -LTTNG_ERR_NOMEM; | |
1618 | goto end; | |
1619 | } | |
1620 | ||
1621 | ret = get_event_type(content); | |
1622 | free(content); | |
1623 | if (ret < 0) { | |
1624 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1625 | goto end; | |
1626 | } | |
1627 | ||
1628 | event.type = ret; | |
1629 | } else if (!strcmp((const char *) node->name, | |
1630 | config_element_loglevel_type)) { | |
1631 | xmlChar *content = xmlNodeGetContent(node); | |
1632 | ||
1633 | /* loglevel_type */ | |
1634 | if (!content) { | |
1635 | ret = -LTTNG_ERR_NOMEM; | |
1636 | goto end; | |
1637 | } | |
1638 | ||
1639 | ret = get_loglevel_type(content); | |
1640 | free(content); | |
1641 | if (ret < 0) { | |
1642 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1643 | goto end; | |
1644 | } | |
1645 | ||
1646 | event.loglevel_type = ret; | |
1647 | } else if (!strcmp((const char *) node->name, | |
1648 | config_element_loglevel)) { | |
1649 | xmlChar *content; | |
1650 | int64_t loglevel = 0; | |
1651 | ||
1652 | /* loglevel */ | |
1653 | content = xmlNodeGetContent(node); | |
1654 | if (!content) { | |
1655 | ret = -LTTNG_ERR_NOMEM; | |
1656 | goto end; | |
1657 | } | |
1658 | ||
1659 | ret = parse_int(content, &loglevel); | |
1660 | free(content); | |
1661 | if (ret) { | |
1662 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1663 | goto end; | |
1664 | } | |
1665 | ||
1666 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1667 | WARN("loglevel out of range."); | |
1668 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1669 | goto end; | |
1670 | } | |
1671 | ||
1672 | event.loglevel = loglevel; | |
1673 | } else if (!strcmp((const char *) node->name, | |
1674 | config_element_filter)) { | |
1675 | xmlChar *content = | |
1676 | xmlNodeGetContent(node); | |
1677 | ||
1678 | /* filter */ | |
1679 | if (!content) { | |
1680 | ret = -LTTNG_ERR_NOMEM; | |
1681 | goto end; | |
1682 | } | |
1683 | ||
02d8ac3d | 1684 | free(filter_expression); |
dcf266c0 JG |
1685 | filter_expression = strdup((char *) content); |
1686 | free(content); | |
1687 | if (!filter_expression) { | |
1688 | ret = -LTTNG_ERR_NOMEM; | |
1689 | goto end; | |
1690 | } | |
1691 | } else if (!strcmp((const char *) node->name, | |
1692 | config_element_exclusions)) { | |
1693 | xmlNodePtr exclusion_node; | |
1694 | int exclusion_index = 0; | |
1695 | ||
1696 | /* exclusions */ | |
1697 | if (exclusions) { | |
1698 | /* | |
1699 | * Exclusions has already been initialized, | |
1700 | * invalid file. | |
1701 | */ | |
1702 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1703 | goto end; | |
1704 | } | |
1705 | ||
1706 | exclusion_count = xmlChildElementCount(node); | |
1707 | if (!exclusion_count) { | |
1708 | continue; | |
1709 | } | |
1710 | ||
1711 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1712 | if (!exclusions) { | |
1713 | exclusion_count = 0; | |
1714 | ret = -LTTNG_ERR_NOMEM; | |
1715 | goto end; | |
1716 | } | |
1717 | ||
1718 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1719 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1720 | xmlChar *content = | |
1721 | xmlNodeGetContent(exclusion_node); | |
1722 | ||
1723 | if (!content) { | |
1724 | ret = -LTTNG_ERR_NOMEM; | |
1725 | goto end; | |
1726 | } | |
1727 | ||
1728 | exclusions[exclusion_index] = strdup((const char *) content); | |
1729 | free(content); | |
1730 | if (!exclusions[exclusion_index]) { | |
1731 | ret = -LTTNG_ERR_NOMEM; | |
1732 | goto end; | |
1733 | } | |
1734 | exclusion_index++; | |
1735 | } | |
1736 | ||
1737 | event.exclusion = 1; | |
1738 | } else if (!strcmp((const char *) node->name, | |
1739 | config_element_attributes)) { | |
1740 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1741 | ||
1742 | /* attributes */ | |
1743 | if (!attribute_node) { | |
1744 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1745 | goto end; | |
1746 | } | |
1747 | ||
1748 | if (!strcmp((const char *) node->name, | |
1749 | config_element_probe_attributes)) { | |
1750 | xmlNodePtr probe_attribute_node; | |
1751 | ||
1752 | /* probe_attributes */ | |
1753 | for (probe_attribute_node = | |
1754 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1755 | probe_attribute_node = xmlNextElementSibling( | |
1756 | probe_attribute_node)) { | |
1757 | ||
1758 | ret = process_probe_attribute_node(probe_attribute_node, | |
1759 | &event.attr.probe); | |
1760 | if (ret) { | |
1761 | goto end; | |
1762 | } | |
1763 | } | |
1764 | } else { | |
1765 | size_t sym_len; | |
1766 | xmlChar *content; | |
1767 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1768 | ||
1769 | /* function_attributes */ | |
1770 | content = xmlNodeGetContent(symbol_node); | |
1771 | if (!content) { | |
1772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
1776 | sym_len = strlen((char *) content); | |
1777 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1778 | WARN("Function name too long."); | |
1779 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1780 | free(content); | |
1781 | goto end; | |
1782 | } | |
1783 | ||
1784 | strncpy(event.attr.ftrace.symbol_name, (char *) content, | |
1785 | sym_len); | |
1786 | free(content); | |
1787 | } | |
1788 | } | |
1789 | } | |
1790 | ||
d7b645e2 JR |
1791 | if ((event.enabled && phase == ENABLE) || phase == CREATION) { |
1792 | ret = lttng_enable_event_with_exclusions(handle, &event, channel_name, | |
1793 | filter_expression, exclusion_count, exclusions); | |
1794 | if (ret < 0) { | |
1795 | WARN("Enabling event (name:%s) on load failed.", event.name); | |
1796 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1797 | goto end; | |
1798 | } | |
065321e9 | 1799 | } |
dcf266c0 JG |
1800 | end: |
1801 | for (i = 0; i < exclusion_count; i++) { | |
1802 | free(exclusions[i]); | |
1803 | } | |
1804 | ||
1805 | free(exclusions); | |
1806 | free(filter_expression); | |
1807 | return ret; | |
1808 | } | |
1809 | ||
1810 | static | |
1811 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
1812 | const char *channel_name) | |
1813 | { | |
1814 | int ret = 0; | |
d7b645e2 | 1815 | struct lttng_event event; |
dcf266c0 JG |
1816 | xmlNodePtr node; |
1817 | ||
1818 | assert(events_node); | |
1819 | assert(handle); | |
1820 | assert(channel_name); | |
1821 | ||
1822 | for (node = xmlFirstElementChild(events_node); node; | |
1823 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 1824 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1825 | if (ret) { |
1826 | goto end; | |
1827 | } | |
1828 | } | |
d7b645e2 JR |
1829 | |
1830 | /* | |
1831 | * Disable all events to enable only the necessary events. | |
1832 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1833 | * force this approach. | |
1834 | */ | |
1835 | memset(&event, 0, sizeof(event)); | |
1836 | event.loglevel = -1; | |
1837 | event.type = LTTNG_EVENT_ALL; | |
1838 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
1839 | if (ret) { | |
1840 | goto end; | |
1841 | } | |
1842 | ||
1843 | for (node = xmlFirstElementChild(events_node); node; | |
1844 | node = xmlNextElementSibling(node)) { | |
1845 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
1846 | if (ret) { | |
1847 | goto end; | |
1848 | } | |
1849 | } | |
1850 | ||
dcf266c0 JG |
1851 | end: |
1852 | return ret; | |
1853 | } | |
1854 | ||
1855 | static | |
1856 | int process_channel_attr_node(xmlNodePtr attr_node, | |
1857 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
1858 | xmlNodePtr *events_node) | |
1859 | { | |
1860 | int ret; | |
1861 | ||
1862 | assert(attr_node); | |
1863 | assert(channel); | |
1864 | assert(contexts_node); | |
1865 | assert(events_node); | |
1866 | ||
1867 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1868 | xmlChar *content; | |
1869 | size_t name_len; | |
1870 | ||
1871 | /* name */ | |
1872 | content = xmlNodeGetContent(attr_node); | |
1873 | if (!content) { | |
1874 | ret = -LTTNG_ERR_NOMEM; | |
1875 | goto end; | |
1876 | } | |
1877 | ||
1878 | name_len = strlen((char *) content); | |
1879 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1880 | WARN("Channel name too long."); | |
1881 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1882 | free(content); | |
1883 | goto end; | |
1884 | } | |
1885 | ||
1886 | strncpy(channel->name, (const char *) content, name_len); | |
1887 | free(content); | |
1888 | } else if (!strcmp((const char *) attr_node->name, | |
1889 | config_element_enabled)) { | |
1890 | xmlChar *content; | |
1891 | int enabled; | |
1892 | ||
1893 | /* enabled */ | |
1894 | content = xmlNodeGetContent(attr_node); | |
1895 | if (!content) { | |
1896 | ret = -LTTNG_ERR_NOMEM; | |
1897 | goto end; | |
1898 | } | |
1899 | ||
1900 | ret = parse_bool(content, &enabled); | |
1901 | free(content); | |
1902 | if (ret) { | |
1903 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1904 | goto end; | |
1905 | } | |
1906 | ||
1907 | channel->enabled = enabled; | |
1908 | } else if (!strcmp((const char *) attr_node->name, | |
1909 | config_element_overwrite_mode)) { | |
1910 | xmlChar *content; | |
1911 | ||
1912 | /* overwrite_mode */ | |
1913 | content = xmlNodeGetContent(attr_node); | |
1914 | if (!content) { | |
1915 | ret = -LTTNG_ERR_NOMEM; | |
1916 | goto end; | |
1917 | } | |
1918 | ||
1919 | ret = get_overwrite_mode(content); | |
1920 | free(content); | |
1921 | if (ret < 0) { | |
1922 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1923 | goto end; | |
1924 | } | |
1925 | ||
1926 | channel->attr.overwrite = ret; | |
1927 | } else if (!strcmp((const char *) attr_node->name, | |
1928 | config_element_subbuf_size)) { | |
1929 | xmlChar *content; | |
1930 | ||
1931 | /* subbuffer_size */ | |
1932 | content = xmlNodeGetContent(attr_node); | |
1933 | if (!content) { | |
1934 | ret = -LTTNG_ERR_NOMEM; | |
1935 | goto end; | |
1936 | } | |
1937 | ||
1938 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
1939 | free(content); | |
1940 | if (ret) { | |
1941 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1942 | goto end; | |
1943 | } | |
1944 | } else if (!strcmp((const char *) attr_node->name, | |
1945 | config_element_num_subbuf)) { | |
1946 | xmlChar *content; | |
1947 | ||
1948 | /* subbuffer_count */ | |
1949 | content = xmlNodeGetContent(attr_node); | |
1950 | if (!content) { | |
1951 | ret = -LTTNG_ERR_NOMEM; | |
1952 | goto end; | |
1953 | } | |
1954 | ||
1955 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
1956 | free(content); | |
1957 | if (ret) { | |
1958 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1959 | goto end; | |
1960 | } | |
1961 | } else if (!strcmp((const char *) attr_node->name, | |
1962 | config_element_switch_timer_interval)) { | |
1963 | xmlChar *content; | |
1964 | uint64_t switch_timer_interval = 0; | |
1965 | ||
1966 | /* switch_timer_interval */ | |
1967 | content = xmlNodeGetContent(attr_node); | |
1968 | if (!content) { | |
1969 | ret = -LTTNG_ERR_NOMEM; | |
1970 | goto end; | |
1971 | } | |
1972 | ||
1973 | ret = parse_uint(content, &switch_timer_interval); | |
1974 | free(content); | |
1975 | if (ret) { | |
1976 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1977 | goto end; | |
1978 | } | |
1979 | ||
1980 | if (switch_timer_interval > UINT_MAX) { | |
1981 | WARN("switch_timer_interval out of range."); | |
1982 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1983 | goto end; | |
1984 | } | |
1985 | ||
1986 | channel->attr.switch_timer_interval = | |
1987 | switch_timer_interval; | |
1988 | } else if (!strcmp((const char *) attr_node->name, | |
1989 | config_element_read_timer_interval)) { | |
1990 | xmlChar *content; | |
1991 | uint64_t read_timer_interval = 0; | |
1992 | ||
1993 | /* read_timer_interval */ | |
1994 | content = xmlNodeGetContent(attr_node); | |
1995 | if (!content) { | |
1996 | ret = -LTTNG_ERR_NOMEM; | |
1997 | goto end; | |
1998 | } | |
1999 | ||
2000 | ret = parse_uint(content, &read_timer_interval); | |
2001 | free(content); | |
2002 | if (ret) { | |
2003 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2004 | goto end; | |
2005 | } | |
2006 | ||
2007 | if (read_timer_interval > UINT_MAX) { | |
2008 | WARN("read_timer_interval out of range."); | |
2009 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2010 | goto end; | |
2011 | } | |
2012 | ||
2013 | channel->attr.read_timer_interval = | |
2014 | read_timer_interval; | |
2015 | } else if (!strcmp((const char *) attr_node->name, | |
2016 | config_element_output_type)) { | |
2017 | xmlChar *content; | |
2018 | ||
2019 | /* output_type */ | |
2020 | content = xmlNodeGetContent(attr_node); | |
2021 | if (!content) { | |
2022 | ret = -LTTNG_ERR_NOMEM; | |
2023 | goto end; | |
2024 | } | |
2025 | ||
2026 | ret = get_output_type(content); | |
2027 | free(content); | |
2028 | if (ret < 0) { | |
2029 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2030 | goto end; | |
2031 | } | |
2032 | ||
2033 | channel->attr.output = ret; | |
2034 | } else if (!strcmp((const char *) attr_node->name, | |
2035 | config_element_tracefile_size)) { | |
2036 | xmlChar *content; | |
2037 | ||
2038 | /* tracefile_size */ | |
2039 | content = xmlNodeGetContent(attr_node); | |
2040 | if (!content) { | |
2041 | ret = -LTTNG_ERR_NOMEM; | |
2042 | goto end; | |
2043 | } | |
2044 | ||
2045 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2046 | free(content); | |
2047 | if (ret) { | |
2048 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2049 | goto end; | |
2050 | } | |
2051 | } else if (!strcmp((const char *) attr_node->name, | |
2052 | config_element_tracefile_count)) { | |
2053 | xmlChar *content; | |
2054 | ||
2055 | /* tracefile_count */ | |
2056 | content = xmlNodeGetContent(attr_node); | |
2057 | if (!content) { | |
2058 | ret = -LTTNG_ERR_NOMEM; | |
2059 | goto end; | |
2060 | } | |
2061 | ||
2062 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2063 | free(content); | |
2064 | if (ret) { | |
2065 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2066 | goto end; | |
2067 | } | |
2068 | } else if (!strcmp((const char *) attr_node->name, | |
2069 | config_element_live_timer_interval)) { | |
2070 | xmlChar *content; | |
2071 | uint64_t live_timer_interval = 0; | |
2072 | ||
2073 | /* live_timer_interval */ | |
2074 | content = xmlNodeGetContent(attr_node); | |
2075 | if (!content) { | |
2076 | ret = -LTTNG_ERR_NOMEM; | |
2077 | goto end; | |
2078 | } | |
2079 | ||
2080 | ret = parse_uint(content, &live_timer_interval); | |
2081 | free(content); | |
2082 | if (ret) { | |
2083 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2084 | goto end; | |
2085 | } | |
2086 | ||
2087 | if (live_timer_interval > UINT_MAX) { | |
2088 | WARN("live_timer_interval out of range."); | |
2089 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2090 | goto end; | |
2091 | } | |
2092 | ||
2093 | channel->attr.live_timer_interval = | |
2094 | live_timer_interval; | |
2095 | } else if (!strcmp((const char *) attr_node->name, | |
2096 | config_element_events)) { | |
2097 | /* events */ | |
2098 | *events_node = attr_node; | |
2099 | } else { | |
2100 | /* contexts */ | |
2101 | *contexts_node = attr_node; | |
2102 | } | |
2103 | ret = 0; | |
2104 | end: | |
2105 | return ret; | |
2106 | } | |
2107 | ||
2108 | static | |
2109 | int process_context_node(xmlNodePtr context_node, | |
2110 | struct lttng_handle *handle, const char *channel_name) | |
2111 | { | |
2112 | int ret; | |
2113 | struct lttng_event_context context; | |
2114 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2115 | ||
2116 | assert(handle); | |
2117 | assert(channel_name); | |
2118 | ||
2119 | if (!context_child_node) { | |
2120 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2121 | goto end; | |
2122 | } | |
2123 | ||
2124 | memset(&context, 0, sizeof(context)); | |
2125 | ||
2126 | if (!strcmp((const char *) context_child_node->name, | |
2127 | config_element_type)) { | |
2128 | /* type */ | |
2129 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2130 | |
dcf266c0 JG |
2131 | if (!content) { |
2132 | ret = -LTTNG_ERR_NOMEM; | |
2133 | goto end; | |
2134 | } | |
2135 | ||
2136 | ret = get_context_type(content); | |
2137 | free(content); | |
2138 | if (ret < 0) { | |
2139 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2140 | goto end; | |
2141 | } | |
2142 | ||
2143 | context.ctx = ret; | |
045fc617 JG |
2144 | } else if (!strcmp((const char *) context_child_node->name, |
2145 | config_element_context_perf)) { | |
2146 | /* perf */ | |
dcf266c0 JG |
2147 | xmlNodePtr perf_attr_node; |
2148 | ||
14ce5bd8 JG |
2149 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2150 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2151 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2152 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2153 | perf_attr_node; perf_attr_node = | |
2154 | xmlNextElementSibling(perf_attr_node)) { | |
2155 | if (!strcmp((const char *) perf_attr_node->name, | |
2156 | config_element_type)) { | |
2157 | xmlChar *content; | |
2158 | uint64_t type = 0; | |
2159 | ||
2160 | /* type */ | |
2161 | content = xmlNodeGetContent(perf_attr_node); | |
2162 | if (!content) { | |
2163 | ret = -LTTNG_ERR_NOMEM; | |
2164 | goto end; | |
2165 | } | |
2166 | ||
2167 | ret = parse_uint(content, &type); | |
2168 | free(content); | |
2169 | if (ret) { | |
2170 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2171 | goto end; | |
2172 | } | |
2173 | ||
2174 | if (type > UINT32_MAX) { | |
2175 | WARN("perf context type out of range."); | |
2176 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2177 | goto end; | |
2178 | } | |
2179 | ||
2180 | context.u.perf_counter.type = type; | |
2181 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2182 | config_element_config)) { | |
2183 | xmlChar *content; | |
2184 | uint64_t config = 0; | |
2185 | ||
2186 | /* config */ | |
2187 | content = xmlNodeGetContent(perf_attr_node); | |
2188 | if (!content) { | |
2189 | ret = -LTTNG_ERR_NOMEM; | |
2190 | goto end; | |
2191 | } | |
2192 | ||
2193 | ret = parse_uint(content, &config); | |
2194 | free(content); | |
2195 | if (ret) { | |
2196 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2197 | goto end; | |
2198 | } | |
2199 | ||
2200 | context.u.perf_counter.config = config; | |
2201 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2202 | config_element_name)) { | |
2203 | xmlChar *content; | |
2204 | size_t name_len; | |
2205 | ||
2206 | /* name */ | |
2207 | content = xmlNodeGetContent(perf_attr_node); | |
2208 | if (!content) { | |
2209 | ret = -LTTNG_ERR_NOMEM; | |
2210 | goto end; | |
2211 | } | |
2212 | ||
2213 | name_len = strlen((char *) content); | |
2214 | if (name_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2215 | WARN("perf context name too long."); | |
2216 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2217 | free(content); | |
2218 | goto end; | |
2219 | } | |
2220 | ||
2221 | strncpy(context.u.perf_counter.name, (const char *) content, | |
2222 | name_len); | |
2223 | free(content); | |
2224 | } | |
2225 | } | |
045fc617 JG |
2226 | } else if (!strcmp((const char *) context_child_node->name, |
2227 | config_element_context_app)) { | |
2228 | /* application context */ | |
2229 | xmlNodePtr app_ctx_node; | |
2230 | ||
2231 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2232 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2233 | app_ctx_node; app_ctx_node = | |
2234 | xmlNextElementSibling(app_ctx_node)) { | |
2235 | xmlChar *content; | |
2236 | char **target = strcmp( | |
2237 | (const char *) app_ctx_node->name, | |
2238 | config_element_context_app_provider_name) == 0 ? | |
2239 | &context.u.app_ctx.provider_name : | |
2240 | &context.u.app_ctx.ctx_name; | |
2241 | ||
2242 | content = xmlNodeGetContent(app_ctx_node); | |
2243 | if (!content) { | |
2244 | ret = -LTTNG_ERR_NOMEM; | |
2245 | goto end; | |
2246 | } | |
2247 | ||
2248 | *target = (char *) content; | |
2249 | } | |
2250 | } else { | |
2251 | /* Unrecognized context type */ | |
2252 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2253 | goto end; | |
dcf266c0 JG |
2254 | } |
2255 | ||
2256 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2257 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2258 | free(context.u.app_ctx.provider_name); | |
2259 | free(context.u.app_ctx.ctx_name); | |
2260 | } | |
dcf266c0 JG |
2261 | end: |
2262 | return ret; | |
2263 | } | |
2264 | ||
2265 | static | |
2266 | int process_contexts_node(xmlNodePtr contexts_node, | |
2267 | struct lttng_handle *handle, const char *channel_name) | |
2268 | { | |
2269 | int ret = 0; | |
2270 | xmlNodePtr context_node; | |
2271 | ||
2272 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2273 | context_node = xmlNextElementSibling(context_node)) { | |
2274 | ret = process_context_node(context_node, handle, channel_name); | |
2275 | if (ret) { | |
2276 | goto end; | |
2277 | } | |
2278 | } | |
2279 | end: | |
2280 | return ret; | |
2281 | } | |
2282 | ||
847a5916 | 2283 | static |
9d4b0931 MD |
2284 | int get_tracker_elements(enum lttng_tracker_type tracker_type, |
2285 | const char **element_id_tracker, | |
2286 | const char **element_target_id, | |
2287 | const char **element_id, | |
2288 | const char **element_id_alias, | |
2289 | const char **element_name) | |
2290 | { | |
2291 | int ret = 0; | |
2292 | ||
2293 | switch (tracker_type) { | |
2294 | case LTTNG_TRACKER_PID: | |
2295 | *element_id_tracker = config_element_pid_tracker; | |
2296 | *element_target_id = config_element_target_pid; | |
2297 | *element_id = config_element_id; | |
2298 | *element_id_alias = config_element_pid; | |
2299 | *element_name = NULL; | |
2300 | break; | |
2301 | case LTTNG_TRACKER_VPID: | |
2302 | *element_id_tracker = config_element_vpid_tracker; | |
2303 | *element_target_id = config_element_target_vpid; | |
2304 | *element_id = config_element_id; | |
2305 | *element_id_alias = NULL; | |
2306 | *element_name = NULL; | |
2307 | break; | |
2308 | case LTTNG_TRACKER_UID: | |
2309 | *element_id_tracker = config_element_uid_tracker; | |
2310 | *element_target_id = config_element_target_uid; | |
2311 | *element_id = config_element_id; | |
2312 | *element_id_alias = NULL; | |
2313 | *element_name = config_element_name; | |
2314 | break; | |
2315 | case LTTNG_TRACKER_VUID: | |
2316 | *element_id_tracker = config_element_vuid_tracker; | |
2317 | *element_target_id = config_element_target_vuid; | |
2318 | *element_id = config_element_id; | |
2319 | *element_id_alias = NULL; | |
2320 | *element_name = config_element_name; | |
2321 | break; | |
2322 | case LTTNG_TRACKER_GID: | |
2323 | *element_id_tracker = config_element_gid_tracker; | |
2324 | *element_target_id = config_element_target_gid; | |
2325 | *element_id = config_element_id; | |
2326 | *element_id_alias = NULL; | |
2327 | *element_name = config_element_name; | |
2328 | break; | |
2329 | case LTTNG_TRACKER_VGID: | |
2330 | *element_id_tracker = config_element_vgid_tracker; | |
2331 | *element_target_id = config_element_target_vgid; | |
2332 | *element_id = config_element_id; | |
2333 | *element_id_alias = NULL; | |
2334 | *element_name = config_element_name; | |
2335 | break; | |
2336 | default: | |
2337 | ret = LTTNG_ERR_INVALID; | |
2338 | } | |
2339 | return ret; | |
2340 | } | |
2341 | ||
2342 | static | |
2343 | int process_id_tracker_node(xmlNodePtr id_tracker_node, | |
2344 | struct lttng_handle *handle, enum lttng_tracker_type tracker_type) | |
847a5916 | 2345 | { |
dd49e13f | 2346 | int ret = 0, child; |
847a5916 JR |
2347 | xmlNodePtr targets_node = NULL; |
2348 | xmlNodePtr node; | |
9d4b0931 MD |
2349 | const char *element_id_tracker; |
2350 | const char *element_target_id; | |
2351 | const char *element_id; | |
2352 | const char *element_id_alias; | |
2353 | const char *element_name; | |
847a5916 JR |
2354 | |
2355 | assert(handle); | |
9d4b0931 MD |
2356 | assert(id_tracker_node); |
2357 | ||
2358 | ret = get_tracker_elements(tracker_type, &element_id_tracker, | |
2359 | &element_target_id, &element_id, &element_id_alias, &element_name); | |
2360 | if (ret) { | |
2361 | return ret; | |
2362 | } | |
2363 | ||
847a5916 | 2364 | /* get the targets node */ |
9d4b0931 | 2365 | for (node = xmlFirstElementChild(id_tracker_node); node; |
847a5916 JR |
2366 | node = xmlNextElementSibling(node)) { |
2367 | if (!strcmp((const char *) node->name, | |
2368 | config_element_targets)) { | |
2369 | targets_node = node; | |
2370 | break; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | if (!targets_node) { | |
2375 | ret = LTTNG_ERR_INVALID; | |
2376 | goto end; | |
2377 | } | |
2378 | ||
9d4b0931 | 2379 | /* Go through all id target node */ |
847a5916 JR |
2380 | child = xmlChildElementCount(targets_node); |
2381 | if (child == 0) { | |
9d4b0931 MD |
2382 | struct lttng_tracker_id tracker_id; |
2383 | ||
2384 | tracker_id.type = LTTNG_ID_ALL; | |
847a5916 | 2385 | /* The session is explicitly set to target nothing. */ |
9d4b0931 | 2386 | ret = lttng_untrack_id(handle, tracker_type, &tracker_id); |
847a5916 JR |
2387 | if (ret) { |
2388 | goto end; | |
2389 | } | |
2390 | } | |
2391 | for (node = xmlFirstElementChild(targets_node); node; | |
2392 | node = xmlNextElementSibling(node)) { | |
9d4b0931 | 2393 | xmlNodePtr id_target_node = node; |
847a5916 | 2394 | |
9d4b0931 MD |
2395 | /* get id node and track it */ |
2396 | for (node = xmlFirstElementChild(id_target_node); node; | |
847a5916 | 2397 | node = xmlNextElementSibling(node)) { |
9d4b0931 MD |
2398 | if (!strcmp((const char *) node->name, element_id) || |
2399 | (element_id_alias && !strcmp((const char *) node->name, | |
2400 | element_id_alias))) { | |
2401 | int64_t id; | |
847a5916 | 2402 | xmlChar *content = NULL; |
9d4b0931 | 2403 | struct lttng_tracker_id tracker_id; |
847a5916 JR |
2404 | |
2405 | content = xmlNodeGetContent(node); | |
2406 | if (!content) { | |
2407 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2408 | goto end; | |
2409 | } | |
2410 | ||
9d4b0931 | 2411 | ret = parse_int(content, &id); |
847a5916 JR |
2412 | free(content); |
2413 | if (ret) { | |
2414 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2415 | goto end; | |
2416 | } | |
2417 | ||
9d4b0931 MD |
2418 | tracker_id.type = LTTNG_ID_VALUE; |
2419 | tracker_id.value = (int) id; | |
2420 | ret = lttng_track_id(handle, tracker_type, &tracker_id); | |
2421 | if (ret) { | |
2422 | goto end; | |
2423 | } | |
2424 | } | |
2425 | if (element_name && !strcmp((const char *) node->name, | |
2426 | element_name)) { | |
2427 | xmlChar *content = NULL; | |
2428 | struct lttng_tracker_id tracker_id; | |
2429 | ||
2430 | content = xmlNodeGetContent(node); | |
2431 | if (!content) { | |
2432 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2433 | goto end; | |
2434 | } | |
2435 | tracker_id.type = LTTNG_ID_STRING; | |
2436 | tracker_id.string = (char *) content; | |
2437 | ret = lttng_track_id(handle, tracker_type, &tracker_id); | |
2438 | free(content); | |
847a5916 JR |
2439 | if (ret) { |
2440 | goto end; | |
2441 | } | |
2442 | } | |
2443 | } | |
9d4b0931 | 2444 | node = id_target_node; |
847a5916 JR |
2445 | } |
2446 | ||
2447 | end: | |
2448 | return ret; | |
2449 | } | |
2450 | ||
2451 | ||
dcf266c0 JG |
2452 | static |
2453 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2454 | { | |
2455 | int ret; | |
2456 | struct lttng_domain domain = { 0 }; | |
2457 | struct lttng_handle *handle = NULL; | |
2458 | xmlNodePtr channels_node = NULL; | |
847a5916 JR |
2459 | xmlNodePtr trackers_node = NULL; |
2460 | xmlNodePtr pid_tracker_node = NULL; | |
9d4b0931 MD |
2461 | xmlNodePtr vpid_tracker_node = NULL; |
2462 | xmlNodePtr uid_tracker_node = NULL; | |
2463 | xmlNodePtr vuid_tracker_node = NULL; | |
2464 | xmlNodePtr gid_tracker_node = NULL; | |
2465 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2466 | xmlNodePtr node; |
2467 | ||
2468 | assert(session_name); | |
2469 | ||
2470 | ret = init_domain(domain_node, &domain); | |
2471 | if (ret) { | |
2472 | goto end; | |
2473 | } | |
2474 | ||
2475 | handle = lttng_create_handle(session_name, &domain); | |
2476 | if (!handle) { | |
2477 | ret = -LTTNG_ERR_NOMEM; | |
2478 | goto end; | |
2479 | } | |
2480 | ||
2481 | /* get the channels node */ | |
2482 | for (node = xmlFirstElementChild(domain_node); node; | |
2483 | node = xmlNextElementSibling(node)) { | |
2484 | if (!strcmp((const char *) node->name, | |
2485 | config_element_channels)) { | |
2486 | channels_node = node; | |
2487 | break; | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | if (!channels_node) { | |
2492 | goto end; | |
2493 | } | |
2494 | ||
2495 | /* create all channels */ | |
2496 | for (node = xmlFirstElementChild(channels_node); node; | |
2497 | node = xmlNextElementSibling(node)) { | |
2498 | struct lttng_channel channel; | |
2499 | xmlNodePtr contexts_node = NULL; | |
2500 | xmlNodePtr events_node = NULL; | |
2501 | xmlNodePtr channel_attr_node; | |
2502 | ||
2503 | memset(&channel, 0, sizeof(channel)); | |
2504 | lttng_channel_set_default_attr(&domain, &channel.attr); | |
2505 | ||
2506 | for (channel_attr_node = xmlFirstElementChild(node); | |
2507 | channel_attr_node; channel_attr_node = | |
2508 | xmlNextElementSibling(channel_attr_node)) { | |
2509 | ret = process_channel_attr_node(channel_attr_node, | |
2510 | &channel, &contexts_node, &events_node); | |
2511 | if (ret) { | |
2512 | goto end; | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | ret = lttng_enable_channel(handle, &channel); | |
2517 | if (ret < 0) { | |
2518 | goto end; | |
2519 | } | |
2520 | ||
2521 | ret = process_events_node(events_node, handle, channel.name); | |
2522 | if (ret) { | |
2523 | goto end; | |
2524 | } | |
2525 | ||
2526 | ret = process_contexts_node(contexts_node, handle, | |
2527 | channel.name); | |
2528 | if (ret) { | |
2529 | goto end; | |
2530 | } | |
2531 | } | |
847a5916 JR |
2532 | |
2533 | /* get the trackers node */ | |
2534 | for (node = xmlFirstElementChild(domain_node); node; | |
2535 | node = xmlNextElementSibling(node)) { | |
2536 | if (!strcmp((const char *) node->name, | |
2537 | config_element_trackers)) { | |
2538 | trackers_node = node; | |
2539 | break; | |
2540 | } | |
2541 | } | |
2542 | ||
2543 | if (!trackers_node) { | |
2544 | goto end; | |
2545 | } | |
2546 | ||
2547 | for (node = xmlFirstElementChild(trackers_node); node; | |
2548 | node = xmlNextElementSibling(node)) { | |
9d4b0931 | 2549 | if (!strcmp((const char *)node->name, config_element_pid_tracker)) { |
847a5916 | 2550 | pid_tracker_node = node; |
9d4b0931 MD |
2551 | ret = process_id_tracker_node(pid_tracker_node, handle, |
2552 | LTTNG_TRACKER_PID); | |
2553 | if (ret) { | |
2554 | goto end; | |
2555 | } | |
2556 | } | |
2557 | if (!strcmp((const char *)node->name, config_element_vpid_tracker)) { | |
2558 | vpid_tracker_node = node; | |
2559 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
2560 | LTTNG_TRACKER_VPID); | |
2561 | if (ret) { | |
2562 | goto end; | |
2563 | } | |
2564 | } | |
2565 | if (!strcmp((const char *)node->name, config_element_uid_tracker)) { | |
2566 | uid_tracker_node = node; | |
2567 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
2568 | LTTNG_TRACKER_UID); | |
2569 | if (ret) { | |
2570 | goto end; | |
2571 | } | |
2572 | } | |
2573 | if (!strcmp((const char *)node->name, config_element_vuid_tracker)) { | |
2574 | vuid_tracker_node = node; | |
2575 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
2576 | LTTNG_TRACKER_VUID); | |
2577 | if (ret) { | |
2578 | goto end; | |
2579 | } | |
2580 | } | |
2581 | if (!strcmp((const char *)node->name, config_element_gid_tracker)) { | |
2582 | gid_tracker_node = node; | |
2583 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
2584 | LTTNG_TRACKER_GID); | |
2585 | if (ret) { | |
2586 | goto end; | |
2587 | } | |
2588 | } | |
2589 | if (!strcmp((const char *)node->name, config_element_vgid_tracker)) { | |
2590 | vgid_tracker_node = node; | |
2591 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
2592 | LTTNG_TRACKER_VGID); | |
847a5916 JR |
2593 | if (ret) { |
2594 | goto end; | |
2595 | } | |
2596 | } | |
847a5916 JR |
2597 | } |
2598 | ||
dcf266c0 JG |
2599 | end: |
2600 | lttng_destroy_handle(handle); | |
2601 | return ret; | |
2602 | } | |
2603 | ||
2604 | static | |
2605 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
2606 | int overwrite, |
2607 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2608 | { |
2609 | int ret, started = -1, snapshot_mode = -1; | |
2610 | uint64_t live_timer_interval = UINT64_MAX; | |
d324faf7 | 2611 | xmlChar *name = NULL; |
9e7c9f56 | 2612 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
2613 | xmlNodePtr domains_node = NULL; |
2614 | xmlNodePtr output_node = NULL; | |
2615 | xmlNodePtr node; | |
2616 | struct lttng_domain *kernel_domain = NULL; | |
2617 | struct lttng_domain *ust_domain = NULL; | |
2618 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 2619 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 2620 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
2621 | |
2622 | for (node = xmlFirstElementChild(session_node); node; | |
2623 | node = xmlNextElementSibling(node)) { | |
2624 | if (!name && !strcmp((const char *) node->name, | |
2625 | config_element_name)) { | |
2626 | /* name */ | |
2627 | xmlChar *node_content = xmlNodeGetContent(node); | |
2628 | if (!node_content) { | |
2629 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2630 | goto error; |
dcf266c0 JG |
2631 | } |
2632 | ||
d324faf7 | 2633 | name = node_content; |
dcf266c0 JG |
2634 | } else if (!domains_node && !strcmp((const char *) node->name, |
2635 | config_element_domains)) { | |
2636 | /* domains */ | |
2637 | domains_node = node; | |
2638 | } else if (started == -1 && !strcmp((const char *) node->name, | |
2639 | config_element_started)) { | |
2640 | /* started */ | |
2641 | xmlChar *node_content = xmlNodeGetContent(node); | |
2642 | if (!node_content) { | |
2643 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2644 | goto error; |
dcf266c0 JG |
2645 | } |
2646 | ||
2647 | ret = parse_bool(node_content, &started); | |
2648 | free(node_content); | |
2649 | if (ret) { | |
2650 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2651 | goto error; |
dcf266c0 JG |
2652 | } |
2653 | } else if (!output_node && !strcmp((const char *) node->name, | |
2654 | config_element_output)) { | |
2655 | /* output */ | |
2656 | output_node = node; | |
9e7c9f56 JR |
2657 | } else if (!shm_path && !strcmp((const char *) node->name, |
2658 | config_element_shared_memory_path)) { | |
2659 | /* shared memory path */ | |
2660 | xmlChar *node_content = xmlNodeGetContent(node); | |
2661 | if (!node_content) { | |
2662 | ret = -LTTNG_ERR_NOMEM; | |
2663 | goto error; | |
2664 | } | |
2665 | ||
2666 | shm_path = node_content; | |
dcf266c0 JG |
2667 | } else { |
2668 | /* attributes, snapshot_mode or live_timer_interval */ | |
2669 | xmlNodePtr attributes_child = | |
2670 | xmlFirstElementChild(node); | |
2671 | ||
2672 | if (!strcmp((const char *) attributes_child->name, | |
2673 | config_element_snapshot_mode)) { | |
2674 | /* snapshot_mode */ | |
2675 | xmlChar *snapshot_mode_content = | |
2676 | xmlNodeGetContent(attributes_child); | |
2677 | if (!snapshot_mode_content) { | |
2678 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2679 | goto error; |
dcf266c0 JG |
2680 | } |
2681 | ||
2682 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); | |
2683 | free(snapshot_mode_content); | |
2684 | if (ret) { | |
2685 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2686 | goto error; |
dcf266c0 JG |
2687 | } |
2688 | } else { | |
2689 | /* live_timer_interval */ | |
2690 | xmlChar *timer_interval_content = | |
2691 | xmlNodeGetContent(attributes_child); | |
2692 | if (!timer_interval_content) { | |
2693 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2694 | goto error; |
dcf266c0 JG |
2695 | } |
2696 | ||
2697 | ret = parse_uint(timer_interval_content, &live_timer_interval); | |
2698 | free(timer_interval_content); | |
2699 | if (ret) { | |
2700 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2701 | goto error; |
dcf266c0 JG |
2702 | } |
2703 | } | |
2704 | } | |
2705 | } | |
2706 | ||
2707 | if (!name) { | |
2708 | /* Mandatory attribute, as defined in the session XSD */ | |
2709 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2710 | goto error; |
dcf266c0 JG |
2711 | } |
2712 | ||
d324faf7 | 2713 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 2714 | /* This is not the session we are looking for */ |
c2da8cde DG |
2715 | ret = -LTTNG_ERR_NO_SESSION; |
2716 | goto error; | |
dcf266c0 JG |
2717 | } |
2718 | ||
2719 | /* Init domains to create the session handles */ | |
2720 | for (node = xmlFirstElementChild(domains_node); node; | |
2721 | node = xmlNextElementSibling(node)) { | |
2722 | struct lttng_domain *domain; | |
2723 | ||
2724 | domain = zmalloc(sizeof(*domain)); | |
2725 | if (!domain) { | |
2726 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 2727 | goto error; |
dcf266c0 JG |
2728 | } |
2729 | ||
2730 | ret = init_domain(node, domain); | |
2731 | if (ret) { | |
2732 | goto domain_init_error; | |
2733 | } | |
2734 | ||
2735 | switch (domain->type) { | |
2736 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
2737 | if (kernel_domain) { |
2738 | /* Same domain seen twice, invalid! */ | |
2739 | goto domain_init_error; | |
2740 | } | |
dcf266c0 JG |
2741 | kernel_domain = domain; |
2742 | break; | |
2743 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
2744 | if (ust_domain) { |
2745 | /* Same domain seen twice, invalid! */ | |
2746 | goto domain_init_error; | |
2747 | } | |
dcf266c0 JG |
2748 | ust_domain = domain; |
2749 | break; | |
2750 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
2751 | if (jul_domain) { |
2752 | /* Same domain seen twice, invalid! */ | |
2753 | goto domain_init_error; | |
2754 | } | |
dcf266c0 JG |
2755 | jul_domain = domain; |
2756 | break; | |
5cdb6027 DG |
2757 | case LTTNG_DOMAIN_LOG4J: |
2758 | if (log4j_domain) { | |
2759 | /* Same domain seen twice, invalid! */ | |
2760 | goto domain_init_error; | |
2761 | } | |
2762 | log4j_domain = domain; | |
2763 | break; | |
0e115563 DG |
2764 | case LTTNG_DOMAIN_PYTHON: |
2765 | if (python_domain) { | |
2766 | /* Same domain seen twice, invalid! */ | |
2767 | goto domain_init_error; | |
2768 | } | |
2769 | python_domain = domain; | |
2770 | break; | |
dcf266c0 JG |
2771 | default: |
2772 | WARN("Invalid domain type"); | |
2773 | goto domain_init_error; | |
2774 | } | |
2775 | continue; | |
2776 | domain_init_error: | |
2777 | free(domain); | |
2778 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 2779 | goto error; |
dcf266c0 JG |
2780 | } |
2781 | ||
2aaf5fc7 JR |
2782 | /* Apply overrides */ |
2783 | if (overrides) { | |
2784 | if (overrides->session_name) { | |
2785 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
2786 | if (!name_override) { | |
2787 | ret = -LTTNG_ERR_NOMEM; | |
2788 | goto error; | |
2789 | } | |
2790 | ||
2791 | /* Overrides the session name to the provided name */ | |
2792 | xmlFree(name); | |
2793 | name = name_override; | |
2794 | } | |
2795 | } | |
2796 | ||
40b4155f | 2797 | if (overwrite) { |
dcf266c0 | 2798 | /* Destroy session if it exists */ |
d324faf7 | 2799 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
2800 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
2801 | ERR("Failed to destroy existing session."); | |
c2da8cde | 2802 | goto error; |
dcf266c0 JG |
2803 | } |
2804 | } | |
2805 | ||
2806 | /* Create session type depending on output type */ | |
2807 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
2808 | ret = create_snapshot_session((const char *) name, output_node, |
2809 | overrides); | |
dcf266c0 JG |
2810 | } else if (live_timer_interval && |
2811 | live_timer_interval != UINT64_MAX) { | |
d324faf7 JG |
2812 | ret = create_session((const char *) name, kernel_domain, |
2813 | ust_domain, jul_domain, log4j_domain, | |
1b08cbce | 2814 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
2815 | } else { |
2816 | /* regular session */ | |
d324faf7 JG |
2817 | ret = create_session((const char *) name, kernel_domain, |
2818 | ust_domain, jul_domain, log4j_domain, | |
1b08cbce | 2819 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 2820 | } |
dcf266c0 | 2821 | if (ret) { |
c2da8cde | 2822 | goto error; |
dcf266c0 JG |
2823 | } |
2824 | ||
9e7c9f56 JR |
2825 | if (shm_path) { |
2826 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 2827 | (const char *) shm_path); |
9e7c9f56 JR |
2828 | if (ret) { |
2829 | goto error; | |
2830 | } | |
2831 | } | |
2832 | ||
dcf266c0 JG |
2833 | for (node = xmlFirstElementChild(domains_node); node; |
2834 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 2835 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
2836 | if (ret) { |
2837 | goto end; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | if (started) { | |
d324faf7 | 2842 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
2843 | if (ret) { |
2844 | goto end; | |
2845 | } | |
2846 | } | |
c2da8cde | 2847 | |
dcf266c0 | 2848 | end: |
b2579dc1 | 2849 | if (ret < 0) { |
d324faf7 JG |
2850 | ERR("Failed to load session %s: %s", (const char *) name, |
2851 | lttng_strerror(ret)); | |
2852 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
2853 | } |
2854 | ||
c2da8cde | 2855 | error: |
dcf266c0 JG |
2856 | free(kernel_domain); |
2857 | free(ust_domain); | |
2858 | free(jul_domain); | |
5cdb6027 | 2859 | free(log4j_domain); |
135a3893 | 2860 | free(python_domain); |
d324faf7 | 2861 | xmlFree(name); |
9e7c9f56 | 2862 | xmlFree(shm_path); |
dcf266c0 JG |
2863 | return ret; |
2864 | } | |
2865 | ||
cf53c06d DG |
2866 | /* |
2867 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
2868 | * Return -1 if the path is EPERM. | |
2869 | */ | |
2870 | static int validate_file_read_creds(const char *path) | |
2871 | { | |
2872 | int ret; | |
2873 | ||
2874 | assert(path); | |
2875 | ||
2876 | /* Can we read the file. */ | |
2877 | ret = access(path, R_OK); | |
2878 | if (!ret) { | |
2879 | goto valid; | |
2880 | } | |
2881 | if (errno == EACCES) { | |
2882 | return -1; | |
2883 | } else { | |
2884 | /* Invalid. */ | |
2885 | return 0; | |
2886 | } | |
2887 | valid: | |
2888 | return 1; | |
2889 | } | |
2890 | ||
dcf266c0 JG |
2891 | static |
2892 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
2893 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
2894 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2895 | { |
2896 | int ret, session_found = !session_name; | |
2897 | xmlDocPtr doc = NULL; | |
2898 | xmlNodePtr sessions_node; | |
2899 | xmlNodePtr session_node; | |
dcf266c0 JG |
2900 | |
2901 | assert(path); | |
2902 | assert(validation_ctx); | |
2903 | ||
cf53c06d DG |
2904 | ret = validate_file_read_creds(path); |
2905 | if (ret != 1) { | |
2906 | if (ret == -1) { | |
2907 | ret = -LTTNG_ERR_EPERM; | |
2908 | } else { | |
2909 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2910 | } | |
dcf266c0 JG |
2911 | goto end; |
2912 | } | |
2913 | ||
2914 | doc = xmlParseFile(path); | |
2915 | if (!doc) { | |
2916 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
2917 | goto end; | |
2918 | } | |
2919 | ||
2920 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
2921 | if (ret) { | |
2922 | ERR("Session configuration file validation failed"); | |
2923 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2924 | goto end; | |
2925 | } | |
2926 | ||
2927 | sessions_node = xmlDocGetRootElement(doc); | |
2928 | if (!sessions_node) { | |
9d4b0931 | 2929 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
2930 | goto end; |
2931 | } | |
2932 | ||
2933 | for (session_node = xmlFirstElementChild(sessions_node); | |
2934 | session_node; session_node = | |
2935 | xmlNextElementSibling(session_node)) { | |
2936 | ret = process_session_node(session_node, | |
1b08cbce | 2937 | session_name, overwrite, overrides); |
dcf266c0 JG |
2938 | if (session_name && ret == 0) { |
2939 | /* Target session found and loaded */ | |
2940 | session_found = 1; | |
2941 | break; | |
2942 | } | |
2943 | } | |
2944 | end: | |
2945 | xmlFreeDoc(doc); | |
2946 | if (!ret) { | |
a96bc65d | 2947 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 | 2948 | } |
9d4b0931 MD |
2949 | if (ret == -LTTNG_ERR_NO_SESSION) { |
2950 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2951 | } | |
dcf266c0 JG |
2952 | return ret; |
2953 | } | |
2954 | ||
60f70355 JG |
2955 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
2956 | static | |
2957 | struct dirent *alloc_dirent(const char *path) | |
2958 | { | |
2959 | size_t len; | |
2960 | long name_max; | |
2961 | struct dirent *entry; | |
2962 | ||
2963 | name_max = pathconf(path, _PC_NAME_MAX); | |
2964 | if (name_max == -1) { | |
2965 | name_max = PATH_MAX; | |
2966 | } | |
2967 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
2968 | entry = zmalloc(len); | |
2969 | return entry; | |
2970 | } | |
2971 | ||
dcf266c0 JG |
2972 | static |
2973 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
2974 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
2975 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
2976 | { |
2977 | int ret, session_found = !session_name; | |
dcf266c0 JG |
2978 | DIR *directory = NULL; |
2979 | ||
2980 | assert(path); | |
2981 | assert(validation_ctx); | |
2982 | ||
4af16958 DG |
2983 | directory = opendir(path); |
2984 | if (!directory) { | |
11143783 DG |
2985 | switch (errno) { |
2986 | case ENOTDIR: | |
0f0a81b5 DG |
2987 | /* Try the file loading. */ |
2988 | break; | |
11143783 DG |
2989 | case ENOENT: |
2990 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
2991 | goto end; | |
2992 | default: | |
0f0a81b5 DG |
2993 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
2994 | goto end; | |
4af16958 | 2995 | } |
dcf266c0 | 2996 | } |
4af16958 | 2997 | if (directory) { |
dcf266c0 JG |
2998 | struct dirent *entry; |
2999 | struct dirent *result; | |
3000 | char *file_path = NULL; | |
3001 | size_t path_len = strlen(path); | |
3002 | ||
3003 | if (path_len >= PATH_MAX) { | |
3004 | ret = -LTTNG_ERR_INVALID; | |
3005 | goto end; | |
3006 | } | |
3007 | ||
60f70355 | 3008 | entry = alloc_dirent(path); |
dcf266c0 JG |
3009 | if (!entry) { |
3010 | ret = -LTTNG_ERR_NOMEM; | |
3011 | goto end; | |
3012 | } | |
3013 | ||
dcf266c0 JG |
3014 | file_path = zmalloc(PATH_MAX); |
3015 | if (!file_path) { | |
3016 | ret = -LTTNG_ERR_NOMEM; | |
3017 | free(entry); | |
3018 | goto end; | |
3019 | } | |
3020 | ||
3021 | strncpy(file_path, path, path_len); | |
3022 | if (file_path[path_len - 1] != '/') { | |
3023 | file_path[path_len++] = '/'; | |
3024 | } | |
3025 | ||
4af16958 | 3026 | ret = 0; |
dcf266c0 JG |
3027 | /* Search for *.lttng files */ |
3028 | while (!readdir_r(directory, entry, &result) && result) { | |
3029 | size_t file_name_len = strlen(result->d_name); | |
3030 | ||
3031 | if (file_name_len <= | |
3032 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3033 | continue; | |
3034 | } | |
3035 | ||
431f702e | 3036 | if (path_len + file_name_len >= PATH_MAX) { |
dcf266c0 JG |
3037 | continue; |
3038 | } | |
3039 | ||
3040 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, | |
3041 | result->d_name + file_name_len - sizeof( | |
3042 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
3043 | continue; | |
3044 | } | |
3045 | ||
3046 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
3047 | file_path[path_len + file_name_len] = '\0'; | |
3048 | ||
3049 | ret = load_session_from_file(file_path, session_name, | |
1b08cbce | 3050 | validation_ctx, overwrite, overrides); |
9d4b0931 | 3051 | if (session_name && (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { |
dcf266c0 JG |
3052 | session_found = 1; |
3053 | break; | |
3054 | } | |
3055 | } | |
3056 | ||
3057 | free(entry); | |
3058 | free(file_path); | |
9d4b0931 MD |
3059 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3060 | goto end; | |
3061 | } | |
dcf266c0 JG |
3062 | } else { |
3063 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3064 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3065 | if (ret) { |
3066 | goto end; | |
dcf266c0 | 3067 | } |
9d4b0931 | 3068 | session_found = 1; |
dcf266c0 JG |
3069 | } |
3070 | ||
9d4b0931 | 3071 | ret = 0; |
dcf266c0 JG |
3072 | end: |
3073 | if (directory) { | |
3074 | if (closedir(directory)) { | |
3075 | PERROR("closedir"); | |
3076 | } | |
3077 | } | |
3078 | ||
9d4b0931 MD |
3079 | if (!ret && !session_found) { |
3080 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 JG |
3081 | } |
3082 | ||
3083 | return ret; | |
3084 | } | |
3085 | ||
ab38c13f DG |
3086 | /* |
3087 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3088 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3089 | */ |
3090 | static int validate_path_creds(const char *path) | |
3091 | { | |
3092 | int ret, uid = getuid(); | |
3093 | struct stat buf; | |
3094 | ||
3095 | assert(path); | |
3096 | ||
cf53c06d | 3097 | if (uid == 0) { |
ab38c13f DG |
3098 | goto valid; |
3099 | } | |
3100 | ||
3101 | ret = stat(path, &buf); | |
3102 | if (ret < 0) { | |
3103 | if (errno != ENOENT) { | |
3104 | PERROR("stat"); | |
3105 | } | |
3106 | ret = -LTTNG_ERR_INVALID; | |
3107 | goto valid; | |
3108 | } | |
3109 | ||
3110 | if (buf.st_uid != uid) { | |
3111 | goto invalid; | |
3112 | } | |
3113 | ||
3114 | valid: | |
ab38c13f | 3115 | return 1; |
cf53c06d DG |
3116 | invalid: |
3117 | return 0; | |
ab38c13f DG |
3118 | } |
3119 | ||
dcf266c0 JG |
3120 | LTTNG_HIDDEN |
3121 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3122 | int overwrite, unsigned int autoload, |
3123 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3124 | { |
3125 | int ret; | |
6c66fa0f | 3126 | bool session_loaded = false; |
cf53c06d | 3127 | const char *path_ptr = NULL; |
dcf266c0 JG |
3128 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3129 | ||
3130 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3131 | if (ret) { | |
3132 | goto end; | |
3133 | } | |
3134 | ||
3135 | if (!path) { | |
ab38c13f DG |
3136 | char *home_path; |
3137 | const char *sys_path; | |
3138 | ||
dcf266c0 | 3139 | /* Try home path */ |
ab38c13f | 3140 | home_path = utils_get_home_dir(); |
dcf266c0 | 3141 | if (home_path) { |
ab38c13f | 3142 | char path[PATH_MAX]; |
dcf266c0 | 3143 | |
d4fcf703 DG |
3144 | /* |
3145 | * Try user session configuration path. Ignore error here so we can | |
3146 | * continue loading the system wide sessions. | |
3147 | */ | |
ab38c13f DG |
3148 | if (autoload) { |
3149 | ret = snprintf(path, sizeof(path), | |
3150 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3151 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3152 | if (ret < 0) { |
3153 | PERROR("snprintf session autoload home config path"); | |
9d4b0931 | 3154 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3155 | goto end; |
3156 | } | |
3157 | ||
3158 | /* | |
3159 | * Credentials are only validated for the autoload in order to | |
3160 | * avoid any user session daemon to try to load kernel sessions | |
3161 | * automatically and failing all the times. | |
3162 | */ | |
3163 | ret = validate_path_creds(path); | |
3164 | if (ret) { | |
3165 | path_ptr = path; | |
3166 | } | |
ab38c13f DG |
3167 | } else { |
3168 | ret = snprintf(path, sizeof(path), | |
3169 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3170 | if (ret < 0) { |
3171 | PERROR("snprintf session home config path"); | |
9d4b0931 | 3172 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3173 | goto end; |
3174 | } | |
3175 | path_ptr = path; | |
ab38c13f | 3176 | } |
cf53c06d DG |
3177 | if (path_ptr) { |
3178 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3179 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3180 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3181 | goto end; | |
3182 | } | |
3183 | /* | |
3184 | * Continue even if the session was found since we have to try | |
3185 | * the system wide sessions. | |
3186 | */ | |
6c66fa0f | 3187 | session_loaded = true; |
ab38c13f | 3188 | } |
d4fcf703 | 3189 | } |
ab38c13f | 3190 | |
cf53c06d DG |
3191 | /* Reset path pointer for the system wide dir. */ |
3192 | path_ptr = NULL; | |
3193 | ||
d4fcf703 DG |
3194 | /* Try system wide configuration directory. */ |
3195 | if (autoload) { | |
3196 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3197 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3198 | ret = validate_path_creds(sys_path); |
3199 | if (ret) { | |
3200 | path_ptr = sys_path; | |
3201 | } | |
d4fcf703 | 3202 | } else { |
cf53c06d DG |
3203 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3204 | path_ptr = sys_path; | |
d4fcf703 DG |
3205 | } |
3206 | ||
cf53c06d DG |
3207 | if (path_ptr) { |
3208 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3209 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3210 | if (!ret) { |
3211 | session_loaded = true; | |
3212 | } | |
9d4b0931 MD |
3213 | } else { |
3214 | ret = 0; | |
dcf266c0 JG |
3215 | } |
3216 | } else { | |
3217 | ret = access(path, F_OK); | |
3218 | if (ret < 0) { | |
3219 | PERROR("access"); | |
3220 | switch (errno) { | |
3221 | case ENOENT: | |
3222 | ret = -LTTNG_ERR_INVALID; | |
3223 | WARN("Session configuration path does not exist."); | |
3224 | break; | |
3225 | case EACCES: | |
3226 | ret = -LTTNG_ERR_EPERM; | |
3227 | break; | |
3228 | default: | |
3229 | ret = -LTTNG_ERR_UNK; | |
3230 | break; | |
3231 | } | |
3232 | goto end; | |
3233 | } | |
3234 | ||
3235 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3236 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3237 | } |
3238 | end: | |
3239 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3240 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3241 | /* | |
3242 | * Don't report an error if no sessions are found when called | |
3243 | * without a session_name or a search path. | |
3244 | */ | |
3245 | ret = 0; | |
3246 | } | |
6c66fa0f JG |
3247 | |
3248 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3249 | /* A matching session was found in one of the search paths. */ | |
3250 | ret = 0; | |
3251 | } | |
dcf266c0 JG |
3252 | return ret; |
3253 | } | |
56766c75 JG |
3254 | |
3255 | static | |
3256 | void __attribute__((destructor)) session_config_exit(void) | |
3257 | { | |
3258 | xmlCleanupParser(); | |
3259 | } |