Commit | Line | Data |
---|---|---|
1501a7f3 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1501a7f3 | 3 | * |
c922647d | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
1501a7f3 | 5 | * |
1501a7f3 JG |
6 | */ |
7 | ||
159b042f | 8 | #include "lttng/tracker.h" |
6c1c0768 | 9 | #define _LGPL_SOURCE |
1501a7f3 | 10 | #include <ctype.h> |
1501a7f3 JG |
11 | #include <stdio.h> |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
36f2332b | 14 | #include <inttypes.h> |
dcf266c0 JG |
15 | #include <dirent.h> |
16 | #include <unistd.h> | |
17 | #include <sys/types.h> | |
18 | #include <sys/stat.h> | |
6c66fa0f | 19 | #include <stdbool.h> |
1501a7f3 JG |
20 | |
21 | #include <common/defaults.h> | |
22 | #include <common/error.h> | |
23 | #include <common/macros.h> | |
24 | #include <common/utils.h> | |
cce35f91 | 25 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 26 | #include <common/compat/getenv.h> |
fb198a11 JG |
27 | #include <lttng/lttng-error.h> |
28 | #include <libxml/parser.h> | |
29 | #include <libxml/valid.h> | |
30 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
31 | #include <libxml/tree.h> |
32 | #include <lttng/lttng.h> | |
33 | #include <lttng/snapshot.h> | |
259c2674 | 34 | #include <lttng/rotation.h> |
c1e83fb4 | 35 | #include <lttng/userspace-probe.h> |
1501a7f3 | 36 | |
f40ef1d5 | 37 | #include "session-config.h" |
36f2332b | 38 | #include "config-internal.h" |
1501a7f3 | 39 | |
c1e83fb4 FD |
40 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
41 | ||
dcf266c0 JG |
42 | struct session_config_validation_ctx { |
43 | xmlSchemaParserCtxtPtr parser_ctx; | |
44 | xmlSchemaPtr schema; | |
45 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
46 | }; | |
47 | ||
ca806b0b | 48 | const char * const config_element_all = "all"; |
3afa94ae SM |
49 | LTTNG_EXPORT const char *config_xml_encoding = "UTF-8"; |
50 | LTTNG_EXPORT size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ | |
51 | LTTNG_EXPORT const char *config_xml_indent_string = "\t"; | |
52 | LTTNG_EXPORT const char *config_xml_true = "true"; | |
53 | LTTNG_EXPORT const char *config_xml_false = "false"; | |
1501a7f3 | 54 | |
fb198a11 JG |
55 | const char * const config_element_channel = "channel"; |
56 | const char * const config_element_channels = "channels"; | |
57 | const char * const config_element_domain = "domain"; | |
58 | const char * const config_element_domains = "domains"; | |
59 | const char * const config_element_event = "event"; | |
60 | const char * const config_element_events = "events"; | |
61 | const char * const config_element_context = "context"; | |
62 | const char * const config_element_contexts = "contexts"; | |
63 | const char * const config_element_attributes = "attributes"; | |
64 | const char * const config_element_exclusion = "exclusion"; | |
65 | const char * const config_element_exclusions = "exclusions"; | |
66 | const char * const config_element_function_attributes = "function_attributes"; | |
67 | const char * const config_element_probe_attributes = "probe_attributes"; | |
68 | const char * const config_element_symbol_name = "symbol_name"; | |
69 | const char * const config_element_address = "address"; | |
70 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 71 | |
ca806b0b SM |
72 | const char * const config_element_userspace_probe_lookup = "lookup_method"; |
73 | const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
74 | const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
75 | const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
76 | const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
77 | const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
78 | const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
79 | const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
80 | const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
81 | const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 82 | |
fb198a11 JG |
83 | const char * const config_element_name = "name"; |
84 | const char * const config_element_enabled = "enabled"; | |
85 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
86 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
87 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
88 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
89 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
ca806b0b SM |
90 | const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
91 | const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
92 | const char * const config_element_output = "output"; |
93 | const char * const config_element_output_type = "output_type"; | |
94 | const char * const config_element_tracefile_size = "tracefile_size"; | |
95 | const char * const config_element_tracefile_count = "tracefile_count"; | |
96 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ca806b0b SM |
97 | const char * const config_element_discarded_events = "discarded_events"; |
98 | const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
99 | const char * const config_element_type = "type"; |
100 | const char * const config_element_buffer_type = "buffer_type"; | |
101 | const char * const config_element_session = "session"; | |
102 | const char * const config_element_sessions = "sessions"; | |
ca806b0b SM |
103 | const char * const config_element_context_perf = "perf"; |
104 | const char * const config_element_context_app = "app"; | |
105 | const char * const config_element_context_app_provider_name = "provider_name"; | |
106 | const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
107 | const char * const config_element_config = "config"; |
108 | const char * const config_element_started = "started"; | |
109 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
110 | const char * const config_element_loglevel = "loglevel"; | |
111 | const char * const config_element_loglevel_type = "loglevel_type"; | |
112 | const char * const config_element_filter = "filter"; | |
ca806b0b | 113 | const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
114 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
115 | const char * const config_element_consumer_output = "consumer_output"; | |
116 | const char * const config_element_destination = "destination"; | |
117 | const char * const config_element_path = "path"; | |
118 | const char * const config_element_net_output = "net_output"; | |
119 | const char * const config_element_control_uri = "control_uri"; | |
120 | const char * const config_element_data_uri = "data_uri"; | |
121 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
122 | const char * const config_element_pid = "pid"; |
123 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 124 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
159b042f | 125 | |
ca806b0b SM |
126 | const char * const config_element_process_attr_id = "id"; |
127 | const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
128 | const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
129 | const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
130 | const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
131 | const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
132 | const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
133 | const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
134 | const char * const config_element_process_attr_values = "process_attr_values"; | |
135 | const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
136 | const char * const config_element_process_attr_pid_value = "pid"; | |
137 | const char * const config_element_process_attr_vpid_value = "vpid"; | |
138 | const char * const config_element_process_attr_uid_value = "uid"; | |
139 | const char * const config_element_process_attr_vuid_value = "vuid"; | |
140 | const char * const config_element_process_attr_gid_value = "gid"; | |
141 | const char * const config_element_process_attr_vgid_value = "vgid"; | |
142 | const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 143 | |
f7af9a72 | 144 | /* Used for support of legacy tracker serialization (< 2.12). */ |
ca806b0b SM |
145 | const char * const config_element_trackers_legacy = "trackers"; |
146 | const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
147 | const char * const config_element_tracker_targets_legacy = "targets"; | |
ca806b0b SM |
148 | const char * const config_element_tracker_pid_legacy = "pid"; |
149 | ||
150 | const char * const config_element_rotation_schedules = "rotation_schedules"; | |
151 | const char * const config_element_rotation_schedule_periodic = "periodic"; | |
152 | const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
153 | const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
154 | const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 155 | |
fb198a11 JG |
156 | const char * const config_domain_type_kernel = "KERNEL"; |
157 | const char * const config_domain_type_ust = "UST"; | |
158 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 159 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 160 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
161 | |
162 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
163 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
164 | const char * const config_buffer_type_global = "GLOBAL"; | |
165 | ||
166 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
167 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
168 | ||
169 | const char * const config_output_type_splice = "SPLICE"; | |
170 | const char * const config_output_type_mmap = "MMAP"; | |
171 | ||
172 | const char * const config_loglevel_type_all = "ALL"; | |
173 | const char * const config_loglevel_type_range = "RANGE"; | |
174 | const char * const config_loglevel_type_single = "SINGLE"; | |
175 | ||
176 | const char * const config_event_type_all = "ALL"; | |
177 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
178 | const char * const config_event_type_probe = "PROBE"; | |
ca806b0b | 179 | const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
180 | const char * const config_event_type_function = "FUNCTION"; |
181 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
182 | const char * const config_event_type_noop = "NOOP"; | |
183 | const char * const config_event_type_syscall = "SYSCALL"; | |
184 | const char * const config_event_type_kprobe = "KPROBE"; | |
185 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
186 | ||
187 | const char * const config_event_context_pid = "PID"; | |
188 | const char * const config_event_context_procname = "PROCNAME"; | |
189 | const char * const config_event_context_prio = "PRIO"; | |
190 | const char * const config_event_context_nice = "NICE"; | |
191 | const char * const config_event_context_vpid = "VPID"; | |
192 | const char * const config_event_context_tid = "TID"; | |
193 | const char * const config_event_context_vtid = "VTID"; | |
194 | const char * const config_event_context_ppid = "PPID"; | |
195 | const char * const config_event_context_vppid = "VPPID"; | |
196 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
197 | const char * const config_event_context_hostname = "HOSTNAME"; | |
198 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 199 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ca806b0b SM |
200 | const char * const config_event_context_app = "APP"; |
201 | const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
202 | const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
203 | const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
204 | const char * const config_event_context_migratable = "MIGRATABLE"; | |
205 | const char * const config_event_context_callstack_user= "CALLSTACK_USER"; | |
206 | const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
207 | const char * const config_event_context_cgroup_ns = "CGROUP_NS"; | |
208 | const char * const config_event_context_ipc_ns = "IPC_NS"; | |
209 | const char * const config_event_context_mnt_ns = "MNT_NS"; | |
210 | const char * const config_event_context_net_ns = "NET_NS"; | |
211 | const char * const config_event_context_pid_ns = "PID_NS"; | |
212 | const char * const config_event_context_time_ns = "TIME_NS"; | |
213 | const char * const config_event_context_user_ns = "USER_NS"; | |
214 | const char * const config_event_context_uts_ns = "UTS_NS"; | |
215 | const char * const config_event_context_uid = "UID"; | |
216 | const char * const config_event_context_euid = "EUID"; | |
217 | const char * const config_event_context_suid = "SUID"; | |
218 | const char * const config_event_context_gid = "GID"; | |
219 | const char * const config_event_context_egid = "EGID"; | |
220 | const char * const config_event_context_sgid = "SGID"; | |
221 | const char * const config_event_context_vuid = "VUID"; | |
222 | const char * const config_event_context_veuid = "VEUID"; | |
223 | const char * const config_event_context_vsuid = "VSUID"; | |
224 | const char * const config_event_context_vgid = "VGID"; | |
225 | const char * const config_event_context_vegid = "VEGID"; | |
226 | const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 227 | |
fbd987c9 | 228 | /* Deprecated symbols */ |
3afa94ae | 229 | LTTNG_EXPORT const char *config_element_perf; |
fbd987c9 | 230 | |
d7b645e2 JR |
231 | enum process_event_node_phase { |
232 | CREATION = 0, | |
233 | ENABLE = 1, | |
234 | }; | |
235 | ||
dcf266c0 JG |
236 | struct consumer_output { |
237 | int enabled; | |
238 | char *path; | |
239 | char *control_uri; | |
240 | char *data_uri; | |
241 | }; | |
242 | ||
36f2332b JG |
243 | /* |
244 | * Returns a xmlChar string which must be released using xmlFree(). | |
245 | */ | |
246 | static xmlChar *encode_string(const char *in_str) | |
247 | { | |
248 | xmlChar *out_str = NULL; | |
249 | xmlCharEncodingHandlerPtr handler; | |
250 | int out_len, ret, in_len; | |
251 | ||
a0377dfe | 252 | LTTNG_ASSERT(in_str); |
36f2332b JG |
253 | |
254 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
255 | if (!handler) { | |
256 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
257 | goto end; | |
258 | } | |
259 | ||
260 | in_len = strlen(in_str); | |
261 | /* | |
f76d886f JG |
262 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
263 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 264 | */ |
f76d886f | 265 | out_len = (in_len * 4) + 1; |
3afa94ae | 266 | out_str = (xmlChar *) xmlMalloc(out_len); |
36f2332b JG |
267 | if (!out_str) { |
268 | goto end; | |
269 | } | |
270 | ||
271 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
272 | if (ret < 0) { | |
273 | xmlFree(out_str); | |
274 | out_str = NULL; | |
275 | goto end; | |
276 | } | |
277 | ||
278 | /* out_len is now the size of out_str */ | |
279 | out_str[out_len] = '\0'; | |
280 | end: | |
281 | return out_str; | |
282 | } | |
283 | ||
705bb62f | 284 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
285 | { |
286 | int ret; | |
287 | struct config_writer *writer; | |
288 | xmlOutputBufferPtr buffer; | |
289 | ||
3afa94ae | 290 | writer = (config_writer *) zmalloc(sizeof(struct config_writer)); |
36f2332b JG |
291 | if (!writer) { |
292 | PERROR("zmalloc config_writer_create"); | |
293 | goto end; | |
294 | } | |
295 | ||
296 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
297 | if (!buffer) { | |
298 | goto error_destroy; | |
299 | } | |
300 | ||
301 | writer->writer = xmlNewTextWriter(buffer); | |
302 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
303 | config_xml_encoding, NULL); | |
304 | if (ret < 0) { | |
305 | goto error_destroy; | |
306 | } | |
307 | ||
308 | ret = xmlTextWriterSetIndentString(writer->writer, | |
309 | BAD_CAST config_xml_indent_string); | |
705bb62f | 310 | if (ret) { |
36f2332b JG |
311 | goto error_destroy; |
312 | } | |
313 | ||
705bb62f JRJ |
314 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
315 | if (ret) { | |
36f2332b JG |
316 | goto error_destroy; |
317 | } | |
318 | ||
319 | end: | |
320 | return writer; | |
321 | error_destroy: | |
322 | config_writer_destroy(writer); | |
323 | return NULL; | |
324 | } | |
325 | ||
36f2332b JG |
326 | int config_writer_destroy(struct config_writer *writer) |
327 | { | |
328 | int ret = 0; | |
329 | ||
330 | if (!writer) { | |
331 | ret = -EINVAL; | |
332 | goto end; | |
333 | } | |
334 | ||
335 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
336 | WARN("Could not close XML document"); | |
337 | ret = -EIO; | |
338 | } | |
339 | ||
340 | if (writer->writer) { | |
341 | xmlFreeTextWriter(writer->writer); | |
342 | } | |
343 | ||
344 | free(writer); | |
345 | end: | |
346 | return ret; | |
347 | } | |
348 | ||
36f2332b JG |
349 | int config_writer_open_element(struct config_writer *writer, |
350 | const char *element_name) | |
351 | { | |
352 | int ret; | |
353 | xmlChar *encoded_element_name; | |
354 | ||
355 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
356 | ret = -1; | |
357 | goto end; | |
358 | } | |
359 | ||
360 | encoded_element_name = encode_string(element_name); | |
361 | if (!encoded_element_name) { | |
362 | ret = -1; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
367 | xmlFree(encoded_element_name); | |
368 | end: | |
28676a1d | 369 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
370 | } |
371 | ||
e10b6a1c JG |
372 | int config_writer_write_attribute(struct config_writer *writer, |
373 | const char *name, const char *value) | |
374 | { | |
375 | int ret; | |
376 | xmlChar *encoded_name = NULL; | |
377 | xmlChar *encoded_value = NULL; | |
378 | ||
379 | if (!writer || !writer->writer || !name || !name[0]) { | |
380 | ret = -1; | |
381 | goto end; | |
382 | } | |
383 | ||
384 | encoded_name = encode_string(name); | |
385 | if (!encoded_name) { | |
386 | ret = -1; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | encoded_value = encode_string(value); | |
391 | if (!encoded_value) { | |
392 | ret = -1; | |
393 | goto end; | |
394 | } | |
395 | ||
396 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
397 | encoded_value); | |
398 | end: | |
399 | xmlFree(encoded_name); | |
400 | xmlFree(encoded_value); | |
401 | return ret >= 0 ? 0 : ret; | |
402 | } | |
403 | ||
36f2332b JG |
404 | int config_writer_close_element(struct config_writer *writer) |
405 | { | |
406 | int ret; | |
407 | ||
408 | if (!writer || !writer->writer) { | |
409 | ret = -1; | |
410 | goto end; | |
411 | } | |
412 | ||
413 | ret = xmlTextWriterEndElement(writer->writer); | |
414 | end: | |
28676a1d | 415 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
416 | } |
417 | ||
36f2332b JG |
418 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
419 | const char *element_name, uint64_t value) | |
420 | { | |
421 | int ret; | |
422 | xmlChar *encoded_element_name; | |
423 | ||
424 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
425 | ret = -1; | |
426 | goto end; | |
427 | } | |
428 | ||
429 | encoded_element_name = encode_string(element_name); | |
430 | if (!encoded_element_name) { | |
431 | ret = -1; | |
432 | goto end; | |
433 | } | |
434 | ||
435 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
436 | encoded_element_name, "%" PRIu64, value); | |
437 | xmlFree(encoded_element_name); | |
438 | end: | |
28676a1d | 439 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
440 | } |
441 | ||
36f2332b JG |
442 | int config_writer_write_element_signed_int(struct config_writer *writer, |
443 | const char *element_name, int64_t value) | |
444 | { | |
445 | int ret; | |
446 | xmlChar *encoded_element_name; | |
447 | ||
448 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
449 | ret = -1; | |
450 | goto end; | |
451 | } | |
452 | ||
453 | encoded_element_name = encode_string(element_name); | |
454 | if (!encoded_element_name) { | |
455 | ret = -1; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
460 | encoded_element_name, "%" PRIi64, value); | |
461 | xmlFree(encoded_element_name); | |
462 | end: | |
28676a1d | 463 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
464 | } |
465 | ||
36f2332b JG |
466 | int config_writer_write_element_bool(struct config_writer *writer, |
467 | const char *element_name, int value) | |
468 | { | |
469 | return config_writer_write_element_string(writer, element_name, | |
470 | value ? config_xml_true : config_xml_false); | |
471 | } | |
472 | ||
2b166400 JR |
473 | int config_writer_write_element_double(struct config_writer *writer, |
474 | const char *element_name, | |
475 | double value) | |
476 | { | |
477 | int ret; | |
478 | xmlChar *encoded_element_name; | |
479 | ||
480 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
481 | ret = -1; | |
482 | goto end; | |
483 | } | |
484 | ||
485 | encoded_element_name = encode_string(element_name); | |
486 | if (!encoded_element_name) { | |
487 | ret = -1; | |
488 | goto end; | |
489 | } | |
490 | ||
491 | ret = xmlTextWriterWriteFormatElement( | |
492 | writer->writer, encoded_element_name, "%f", value); | |
493 | xmlFree(encoded_element_name); | |
494 | end: | |
495 | return ret >= 0 ? 0 : ret; | |
496 | } | |
497 | ||
36f2332b JG |
498 | int config_writer_write_element_string(struct config_writer *writer, |
499 | const char *element_name, const char *value) | |
500 | { | |
501 | int ret; | |
502 | xmlChar *encoded_element_name = NULL; | |
503 | xmlChar *encoded_value = NULL; | |
504 | ||
505 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
506 | !value) { | |
507 | ret = -1; | |
508 | goto end; | |
509 | } | |
510 | ||
511 | encoded_element_name = encode_string(element_name); | |
512 | if (!encoded_element_name) { | |
513 | ret = -1; | |
514 | goto end; | |
515 | } | |
516 | ||
517 | encoded_value = encode_string(value); | |
518 | if (!encoded_value) { | |
519 | ret = -1; | |
520 | goto end; | |
521 | } | |
522 | ||
523 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 524 | encoded_value); |
36f2332b JG |
525 | end: |
526 | xmlFree(encoded_element_name); | |
527 | xmlFree(encoded_value); | |
28676a1d | 528 | return ret >= 0 ? 0 : ret; |
36f2332b | 529 | } |
dcf266c0 | 530 | |
d22ad5f8 | 531 | static ATTR_FORMAT_PRINTF(2, 3) |
f46376a1 | 532 | void xml_error_handler(void *ctx __attribute__((unused)), const char *format, ...) |
dcf266c0 JG |
533 | { |
534 | char *errMsg; | |
535 | va_list args; | |
536 | int ret; | |
537 | ||
538 | va_start(args, format); | |
539 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 540 | va_end(args); |
dcf266c0 JG |
541 | if (ret == -1) { |
542 | ERR("String allocation failed in xml error handler"); | |
543 | return; | |
544 | } | |
dcf266c0 JG |
545 | |
546 | fprintf(stderr, "XML Error: %s", errMsg); | |
547 | free(errMsg); | |
548 | } | |
549 | ||
550 | static | |
551 | void fini_session_config_validation_ctx( | |
552 | struct session_config_validation_ctx *ctx) | |
553 | { | |
554 | if (ctx->parser_ctx) { | |
555 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
556 | } | |
557 | ||
558 | if (ctx->schema) { | |
559 | xmlSchemaFree(ctx->schema); | |
560 | } | |
561 | ||
562 | if (ctx->schema_validation_ctx) { | |
563 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
564 | } | |
565 | ||
566 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
567 | } | |
568 | ||
54e399cb | 569 | static |
a3ecaea8 | 570 | char *get_session_config_xsd_path(void) |
54e399cb JG |
571 | { |
572 | char *xsd_path; | |
e8fa9fb0 | 573 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
574 | size_t base_path_len; |
575 | size_t max_path_len; | |
576 | ||
577 | if (!base_path) { | |
578 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
579 | } | |
580 | ||
581 | base_path_len = strlen(base_path); | |
582 | max_path_len = base_path_len + | |
583 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
3afa94ae | 584 | xsd_path = (char *) zmalloc(max_path_len); |
54e399cb JG |
585 | if (!xsd_path) { |
586 | goto end; | |
587 | } | |
588 | ||
00a7f6f8 | 589 | strcpy(xsd_path, base_path); |
54e399cb JG |
590 | if (xsd_path[base_path_len - 1] != '/') { |
591 | xsd_path[base_path_len++] = '/'; | |
592 | } | |
593 | ||
00a7f6f8 | 594 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
595 | end: |
596 | return xsd_path; | |
597 | } | |
598 | ||
dcf266c0 JG |
599 | static |
600 | int init_session_config_validation_ctx( | |
601 | struct session_config_validation_ctx *ctx) | |
602 | { | |
603 | int ret; | |
54e399cb JG |
604 | char *xsd_path = get_session_config_xsd_path(); |
605 | ||
606 | if (!xsd_path) { | |
607 | ret = -LTTNG_ERR_NOMEM; | |
608 | goto end; | |
609 | } | |
dcf266c0 | 610 | |
54e399cb | 611 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
612 | if (!ctx->parser_ctx) { |
613 | ERR("XSD parser context creation failed"); | |
614 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
615 | goto end; | |
616 | } | |
617 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
618 | xml_error_handler, NULL); | |
619 | ||
620 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
621 | if (!ctx->schema) { | |
622 | ERR("XSD parsing failed"); | |
623 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
624 | goto end; | |
625 | } | |
626 | ||
627 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
628 | if (!ctx->schema_validation_ctx) { | |
629 | ERR("XSD validation context creation failed"); | |
630 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
631 | goto end; | |
632 | } | |
633 | ||
634 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
635 | xml_error_handler, NULL); | |
636 | ret = 0; | |
637 | ||
638 | end: | |
639 | if (ret) { | |
640 | fini_session_config_validation_ctx(ctx); | |
641 | } | |
642 | ||
54e399cb | 643 | free(xsd_path); |
dcf266c0 JG |
644 | return ret; |
645 | } | |
646 | ||
647 | static | |
648 | int parse_uint(xmlChar *str, uint64_t *val) | |
649 | { | |
650 | int ret; | |
651 | char *endptr; | |
652 | ||
653 | if (!str || !val) { | |
654 | ret = -1; | |
655 | goto end; | |
656 | } | |
657 | ||
658 | *val = strtoull((const char *) str, &endptr, 10); | |
659 | if (!endptr || *endptr) { | |
660 | ret = -1; | |
661 | } else { | |
662 | ret = 0; | |
663 | } | |
664 | ||
665 | end: | |
666 | return ret; | |
667 | } | |
668 | ||
669 | static | |
670 | int parse_int(xmlChar *str, int64_t *val) | |
671 | { | |
672 | int ret; | |
673 | char *endptr; | |
674 | ||
675 | if (!str || !val) { | |
676 | ret = -1; | |
677 | goto end; | |
678 | } | |
679 | ||
680 | *val = strtoll((const char *) str, &endptr, 10); | |
681 | if (!endptr || *endptr) { | |
682 | ret = -1; | |
683 | } else { | |
684 | ret = 0; | |
685 | } | |
686 | ||
687 | end: | |
688 | return ret; | |
689 | } | |
690 | ||
691 | static | |
692 | int parse_bool(xmlChar *str, int *val) | |
693 | { | |
694 | int ret = 0; | |
695 | ||
696 | if (!str || !val) { | |
697 | ret = -1; | |
698 | goto end; | |
699 | } | |
700 | ||
47945b17 SM |
701 | if (!strcmp((const char *) str, config_xml_true) || |
702 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 703 | *val = 1; |
47945b17 SM |
704 | } else if (!strcmp((const char *) str, config_xml_false) || |
705 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
706 | *val = 0; |
707 | } else { | |
a22a57cb | 708 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
709 | (const char *) str); |
710 | ret = -1; | |
711 | } | |
712 | end: | |
713 | return ret; | |
714 | } | |
715 | ||
716 | static | |
717 | int get_domain_type(xmlChar *domain) | |
718 | { | |
719 | int ret; | |
720 | ||
721 | if (!domain) { | |
722 | goto error; | |
723 | } | |
724 | ||
725 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
726 | ret = LTTNG_DOMAIN_KERNEL; | |
727 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
728 | ret = LTTNG_DOMAIN_UST; | |
729 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
730 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
731 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
732 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
733 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
734 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
735 | } else { |
736 | goto error; | |
737 | } | |
738 | ||
739 | return ret; | |
740 | error: | |
741 | return -1; | |
742 | } | |
743 | ||
744 | static | |
745 | int get_buffer_type(xmlChar *buffer_type) | |
746 | { | |
747 | int ret; | |
748 | ||
749 | if (!buffer_type) { | |
750 | goto error; | |
751 | } | |
752 | ||
753 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
754 | ret = LTTNG_BUFFER_GLOBAL; | |
755 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
756 | ret = LTTNG_BUFFER_PER_UID; | |
757 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
758 | ret = LTTNG_BUFFER_PER_PID; | |
759 | } else { | |
760 | goto error; | |
761 | } | |
762 | ||
763 | return ret; | |
764 | error: | |
765 | return -1; | |
766 | } | |
767 | ||
768 | static | |
769 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
770 | { | |
771 | int ret; | |
772 | ||
773 | if (!overwrite_mode) { | |
774 | goto error; | |
775 | } | |
776 | ||
777 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
778 | ret = 1; | |
779 | } else if (!strcmp((char *) overwrite_mode, | |
780 | config_overwrite_mode_discard)) { | |
781 | ret = 0; | |
782 | } else { | |
783 | goto error; | |
784 | } | |
785 | ||
786 | return ret; | |
787 | error: | |
788 | return -1; | |
789 | } | |
790 | ||
791 | static | |
792 | int get_output_type(xmlChar *output_type) | |
793 | { | |
794 | int ret; | |
795 | ||
796 | if (!output_type) { | |
797 | goto error; | |
798 | } | |
799 | ||
800 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
801 | ret = LTTNG_EVENT_MMAP; | |
802 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
803 | ret = LTTNG_EVENT_SPLICE; | |
804 | } else { | |
805 | goto error; | |
806 | } | |
807 | ||
808 | return ret; | |
809 | error: | |
810 | return -1; | |
811 | } | |
812 | ||
813 | static | |
814 | int get_event_type(xmlChar *event_type) | |
815 | { | |
816 | int ret; | |
817 | ||
818 | if (!event_type) { | |
819 | goto error; | |
820 | } | |
821 | ||
822 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
823 | ret = LTTNG_EVENT_ALL; | |
824 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
825 | ret = LTTNG_EVENT_TRACEPOINT; | |
826 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
827 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
828 | } else if (!strcmp((char *) event_type, |
829 | config_event_type_userspace_probe)) { | |
830 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
831 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
832 | ret = LTTNG_EVENT_FUNCTION; | |
833 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 834 | config_event_type_function_entry)) { |
dcf266c0 JG |
835 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
836 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
837 | ret = LTTNG_EVENT_NOOP; | |
838 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
839 | ret = LTTNG_EVENT_SYSCALL; | |
840 | } else { | |
841 | goto error; | |
842 | } | |
843 | ||
844 | return ret; | |
845 | error: | |
846 | return -1; | |
847 | } | |
848 | ||
849 | static | |
850 | int get_loglevel_type(xmlChar *loglevel_type) | |
851 | { | |
852 | int ret; | |
853 | ||
854 | if (!loglevel_type) { | |
855 | goto error; | |
856 | } | |
857 | ||
858 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
859 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
860 | } else if (!strcmp((char *) loglevel_type, | |
861 | config_loglevel_type_range)) { | |
862 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
863 | } else if (!strcmp((char *) loglevel_type, | |
864 | config_loglevel_type_single)) { | |
865 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
866 | } else { | |
867 | goto error; | |
868 | } | |
869 | ||
870 | return ret; | |
871 | error: | |
872 | return -1; | |
873 | } | |
874 | ||
875 | /* | |
876 | * Return the context type or -1 on error. | |
877 | */ | |
878 | static | |
879 | int get_context_type(xmlChar *context_type) | |
880 | { | |
881 | int ret; | |
882 | ||
883 | if (!context_type) { | |
884 | goto error; | |
885 | } | |
886 | ||
887 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
888 | ret = LTTNG_EVENT_CONTEXT_PID; | |
889 | } else if (!strcmp((char *) context_type, | |
890 | config_event_context_procname)) { | |
891 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
892 | } else if (!strcmp((char *) context_type, | |
893 | config_event_context_prio)) { | |
894 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
895 | } else if (!strcmp((char *) context_type, | |
896 | config_event_context_nice)) { | |
897 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
898 | } else if (!strcmp((char *) context_type, | |
899 | config_event_context_vpid)) { | |
900 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
901 | } else if (!strcmp((char *) context_type, | |
902 | config_event_context_tid)) { | |
903 | ret = LTTNG_EVENT_CONTEXT_TID; | |
904 | } else if (!strcmp((char *) context_type, | |
905 | config_event_context_vtid)) { | |
906 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
907 | } else if (!strcmp((char *) context_type, | |
908 | config_event_context_ppid)) { | |
909 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
910 | } else if (!strcmp((char *) context_type, | |
911 | config_event_context_vppid)) { | |
912 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
913 | } else if (!strcmp((char *) context_type, | |
914 | config_event_context_pthread_id)) { | |
915 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
916 | } else if (!strcmp((char *) context_type, | |
917 | config_event_context_hostname)) { | |
918 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
919 | } else if (!strcmp((char *) context_type, | |
920 | config_event_context_ip)) { | |
921 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
922 | } else if (!strcmp((char *) context_type, |
923 | config_event_context_interruptible)) { | |
924 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
925 | } else if (!strcmp((char *) context_type, | |
926 | config_event_context_preemptible)) { | |
927 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
928 | } else if (!strcmp((char *) context_type, | |
929 | config_event_context_need_reschedule)) { | |
930 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
931 | } else if (!strcmp((char *) context_type, | |
932 | config_event_context_migratable)) { | |
933 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
934 | } else if (!strcmp((char *) context_type, |
935 | config_event_context_callstack_user)) { | |
936 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
937 | } else if (!strcmp((char *) context_type, | |
938 | config_event_context_callstack_kernel)) { | |
939 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
940 | } else if (!strcmp((char *) context_type, |
941 | config_event_context_cgroup_ns)) { | |
942 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
943 | } else if (!strcmp((char *) context_type, | |
944 | config_event_context_ipc_ns)) { | |
945 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
946 | } else if (!strcmp((char *) context_type, | |
947 | config_event_context_mnt_ns)) { | |
948 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
949 | } else if (!strcmp((char *) context_type, | |
950 | config_event_context_net_ns)) { | |
951 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
952 | } else if (!strcmp((char *) context_type, | |
953 | config_event_context_pid_ns)) { | |
954 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
955 | } else if (!strcmp((char *) context_type, |
956 | config_event_context_time_ns)) { | |
957 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
958 | } else if (!strcmp((char *) context_type, |
959 | config_event_context_user_ns)) { | |
960 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
961 | } else if (!strcmp((char *) context_type, | |
962 | config_event_context_uts_ns)) { | |
963 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
964 | } else if (!strcmp((char *) context_type, |
965 | config_event_context_uid)) { | |
966 | ret = LTTNG_EVENT_CONTEXT_UID; | |
967 | } else if (!strcmp((char *) context_type, | |
968 | config_event_context_euid)) { | |
969 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
970 | } else if (!strcmp((char *) context_type, | |
971 | config_event_context_suid)) { | |
972 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
973 | } else if (!strcmp((char *) context_type, | |
974 | config_event_context_gid)) { | |
975 | ret = LTTNG_EVENT_CONTEXT_GID; | |
976 | } else if (!strcmp((char *) context_type, | |
977 | config_event_context_egid)) { | |
978 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
979 | } else if (!strcmp((char *) context_type, | |
980 | config_event_context_sgid)) { | |
981 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
982 | } else if (!strcmp((char *) context_type, | |
983 | config_event_context_vuid)) { | |
984 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
985 | } else if (!strcmp((char *) context_type, | |
986 | config_event_context_veuid)) { | |
987 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
988 | } else if (!strcmp((char *) context_type, | |
989 | config_event_context_vsuid)) { | |
990 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
991 | } else if (!strcmp((char *) context_type, | |
992 | config_event_context_vgid)) { | |
993 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
994 | } else if (!strcmp((char *) context_type, | |
995 | config_event_context_vegid)) { | |
996 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
997 | } else if (!strcmp((char *) context_type, | |
998 | config_event_context_vsgid)) { | |
999 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1000 | } else { |
1001 | goto error; | |
1002 | } | |
1003 | ||
1004 | return ret; | |
1005 | error: | |
1006 | return -1; | |
1007 | } | |
1008 | ||
1009 | static | |
1010 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1011 | { | |
1012 | int ret; | |
1013 | xmlNodePtr node; | |
1014 | ||
1015 | for (node = xmlFirstElementChild(domain_node); node; | |
1016 | node = xmlNextElementSibling(node)) { | |
1017 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1018 | /* domain type */ | |
1019 | xmlChar *node_content = xmlNodeGetContent(node); | |
1020 | if (!node_content) { | |
1021 | ret = -LTTNG_ERR_NOMEM; | |
1022 | goto end; | |
1023 | } | |
1024 | ||
1025 | ret = get_domain_type(node_content); | |
1026 | free(node_content); | |
1027 | if (ret < 0) { | |
1028 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1029 | goto end; | |
1030 | } | |
1031 | ||
3afa94ae | 1032 | domain->type = (lttng_domain_type) ret; |
dcf266c0 JG |
1033 | } else if (!strcmp((const char *) node->name, |
1034 | config_element_buffer_type)) { | |
1035 | /* buffer type */ | |
1036 | xmlChar *node_content = xmlNodeGetContent(node); | |
1037 | if (!node_content) { | |
1038 | ret = -LTTNG_ERR_NOMEM; | |
1039 | goto end; | |
1040 | } | |
1041 | ||
1042 | ret = get_buffer_type(node_content); | |
1043 | free(node_content); | |
1044 | if (ret < 0) { | |
1045 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1046 | goto end; | |
1047 | } | |
1048 | ||
3afa94ae | 1049 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
1050 | } |
1051 | } | |
1052 | ret = 0; | |
1053 | end: | |
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | static | |
1058 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1059 | char **data_uri) | |
1060 | { | |
1061 | xmlNodePtr node; | |
1062 | ||
1063 | for (node = xmlFirstElementChild(net_output_node); node; | |
1064 | node = xmlNextElementSibling(node)) { | |
1065 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1066 | /* control_uri */ | |
1067 | *control_uri = (char *) xmlNodeGetContent(node); | |
1068 | if (!*control_uri) { | |
1069 | break; | |
1070 | } | |
1071 | } else { | |
1072 | /* data_uri */ | |
1073 | *data_uri = (char *) xmlNodeGetContent(node); | |
1074 | if (!*data_uri) { | |
1075 | break; | |
1076 | } | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1081 | } | |
1082 | ||
1083 | static | |
1084 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1085 | struct consumer_output *output) | |
1086 | { | |
1087 | int ret; | |
1088 | xmlNodePtr node; | |
1089 | ||
a0377dfe | 1090 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1091 | |
1092 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1093 | node = xmlNextElementSibling(node)) { | |
1094 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1095 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1096 | ||
1097 | /* enabled */ | |
1098 | if (!enabled_str) { | |
1099 | ret = -LTTNG_ERR_NOMEM; | |
1100 | goto end; | |
1101 | } | |
1102 | ||
1103 | ret = parse_bool(enabled_str, &output->enabled); | |
1104 | free(enabled_str); | |
1105 | if (ret) { | |
1106 | goto end; | |
1107 | } | |
1108 | } else { | |
1109 | xmlNodePtr output_type_node; | |
1110 | ||
1111 | /* destination */ | |
1112 | output_type_node = xmlFirstElementChild(node); | |
1113 | if (!output_type_node) { | |
1114 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1115 | goto end; | |
1116 | } | |
1117 | ||
1118 | if (!strcmp((const char *) output_type_node->name, | |
1119 | config_element_path)) { | |
1120 | /* path */ | |
1121 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1122 | if (!output->path) { | |
1123 | ret = -LTTNG_ERR_NOMEM; | |
1124 | goto end; | |
1125 | } | |
1126 | } else { | |
1127 | /* net_output */ | |
1128 | ret = get_net_output_uris(output_type_node, | |
1129 | &output->control_uri, &output->data_uri); | |
1130 | if (ret) { | |
1131 | goto end; | |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | } | |
1136 | ret = 0; | |
1137 | ||
1138 | end: | |
1139 | if (ret) { | |
1140 | free(output->path); | |
1141 | free(output->control_uri); | |
1142 | free(output->data_uri); | |
1143 | memset(output, 0, sizeof(struct consumer_output)); | |
1144 | } | |
1145 | return ret; | |
1146 | } | |
1147 | ||
1148 | static | |
95681498 JG |
1149 | int create_session_net_output(const char *name, const char *control_uri, |
1150 | const char *data_uri) | |
dcf266c0 JG |
1151 | { |
1152 | int ret; | |
1153 | struct lttng_handle *handle; | |
1154 | const char *uri = NULL; | |
1155 | ||
a0377dfe | 1156 | LTTNG_ASSERT(name); |
dcf266c0 | 1157 | |
95681498 | 1158 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1159 | if (!handle) { |
1160 | ret = -LTTNG_ERR_NOMEM; | |
1161 | goto end; | |
1162 | } | |
1163 | ||
1164 | if (!control_uri || !data_uri) { | |
1165 | uri = control_uri ? control_uri : data_uri; | |
1166 | control_uri = uri; | |
1167 | data_uri = uri; | |
1168 | } | |
1169 | ||
1170 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1171 | lttng_destroy_handle(handle); | |
1172 | end: | |
1173 | return ret; | |
1174 | } | |
1175 | ||
1176 | static | |
1b08cbce JR |
1177 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1178 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1179 | { |
1180 | int ret; | |
1181 | xmlNodePtr node = NULL; | |
1182 | xmlNodePtr snapshot_output_list_node; | |
1183 | xmlNodePtr snapshot_output_node; | |
1184 | ||
a0377dfe | 1185 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
1186 | |
1187 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1188 | if (ret) { | |
1189 | goto end; | |
1190 | } | |
1191 | ||
1192 | if (!output_node) { | |
1193 | goto end; | |
1194 | } | |
1195 | ||
1196 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1197 | ||
1198 | /* Parse and create snapshot outputs */ | |
1199 | ||
1200 | for (snapshot_output_node = | |
1201 | xmlFirstElementChild(snapshot_output_list_node); | |
1202 | snapshot_output_node; snapshot_output_node = | |
1203 | xmlNextElementSibling(snapshot_output_node)) { | |
1204 | char *name = NULL; | |
1205 | uint64_t max_size = UINT64_MAX; | |
1c9a0b0e | 1206 | struct consumer_output output = {}; |
dcf266c0 | 1207 | struct lttng_snapshot_output *snapshot_output = NULL; |
1b08cbce JR |
1208 | const char *control_uri = NULL; |
1209 | const char *data_uri = NULL; | |
1210 | const char *path = NULL; | |
dcf266c0 JG |
1211 | |
1212 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1213 | node = xmlNextElementSibling(node)) { | |
1214 | if (!strcmp((const char *) node->name, | |
1215 | config_element_name)) { | |
1216 | /* name */ | |
1217 | name = (char *) xmlNodeGetContent(node); | |
1218 | if (!name) { | |
1219 | ret = -LTTNG_ERR_NOMEM; | |
1220 | goto error_snapshot_output; | |
1221 | } | |
1222 | } else if (!strcmp((const char *) node->name, | |
1223 | config_element_max_size)) { | |
1224 | xmlChar *content = xmlNodeGetContent(node); | |
1225 | ||
1226 | /* max_size */ | |
1227 | if (!content) { | |
1228 | ret = -LTTNG_ERR_NOMEM; | |
1229 | goto error_snapshot_output; | |
1230 | } | |
1231 | ret = parse_uint(content, &max_size); | |
1232 | free(content); | |
1233 | if (ret) { | |
1234 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1235 | goto error_snapshot_output; | |
1236 | } | |
1237 | } else { | |
1238 | /* consumer_output */ | |
1239 | ret = process_consumer_output(node, &output); | |
1240 | if (ret) { | |
1241 | goto error_snapshot_output; | |
1242 | } | |
1243 | } | |
1244 | } | |
1245 | ||
21a3f144 JR |
1246 | control_uri = output.control_uri; |
1247 | data_uri = output.data_uri; | |
1248 | path = output.path; | |
1249 | ||
1b08cbce JR |
1250 | if (overrides) { |
1251 | if (overrides->path_url) { | |
1b08cbce | 1252 | path = overrides->path_url; |
21a3f144 JR |
1253 | /* Control/data_uri are null */ |
1254 | control_uri = NULL; | |
1255 | data_uri = NULL; | |
1b08cbce JR |
1256 | } else { |
1257 | if (overrides->ctrl_url) { | |
1b08cbce | 1258 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1259 | /* path is null */ |
1260 | path = NULL; | |
1b08cbce JR |
1261 | } |
1262 | if (overrides->data_url) { | |
1b08cbce | 1263 | data_uri = overrides->data_url; |
21a3f144 JR |
1264 | /* path is null */ |
1265 | path = NULL; | |
1b08cbce JR |
1266 | } |
1267 | } | |
1b08cbce JR |
1268 | } |
1269 | ||
dcf266c0 JG |
1270 | snapshot_output = lttng_snapshot_output_create(); |
1271 | if (!snapshot_output) { | |
1272 | ret = -LTTNG_ERR_NOMEM; | |
1273 | goto error_snapshot_output; | |
1274 | } | |
1275 | ||
1276 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1277 | if (ret) { | |
1278 | goto error_snapshot_output; | |
1279 | } | |
1280 | ||
1281 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1282 | if (ret) { | |
1283 | goto error_snapshot_output; | |
1284 | } | |
1285 | ||
1b08cbce JR |
1286 | if (path) { |
1287 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1288 | snapshot_output); |
1289 | if (ret) { | |
1290 | goto error_snapshot_output; | |
1291 | } | |
1292 | } else { | |
1b08cbce JR |
1293 | if (control_uri) { |
1294 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1295 | snapshot_output); |
1296 | if (ret) { | |
1297 | goto error_snapshot_output; | |
1298 | } | |
1299 | } | |
1300 | ||
1b08cbce JR |
1301 | if (data_uri) { |
1302 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1303 | snapshot_output); |
1304 | if (ret) { | |
1305 | goto error_snapshot_output; | |
1306 | } | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1311 | error_snapshot_output: | |
1312 | free(name); | |
1313 | free(output.path); | |
1314 | free(output.control_uri); | |
1315 | free(output.data_uri); | |
1316 | lttng_snapshot_output_destroy(snapshot_output); | |
1317 | if (ret) { | |
1318 | goto end; | |
1319 | } | |
1320 | } | |
1321 | end: | |
1322 | return ret; | |
1323 | } | |
1324 | ||
1325 | static | |
1326 | int create_session(const char *name, | |
dcf266c0 | 1327 | xmlNodePtr output_node, |
1b08cbce JR |
1328 | uint64_t live_timer_interval, |
1329 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1330 | { |
1331 | int ret; | |
1c9a0b0e | 1332 | struct consumer_output output = {}; |
dcf266c0 | 1333 | xmlNodePtr consumer_output_node; |
1b08cbce JR |
1334 | const char *control_uri = NULL; |
1335 | const char *data_uri = NULL; | |
1336 | const char *path = NULL; | |
dcf266c0 | 1337 | |
a0377dfe | 1338 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1339 | |
1340 | if (output_node) { | |
1341 | consumer_output_node = xmlFirstElementChild(output_node); | |
1342 | if (!consumer_output_node) { | |
1343 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1344 | goto end; | |
1345 | } | |
1346 | ||
1347 | if (strcmp((const char *) consumer_output_node->name, | |
1348 | config_element_consumer_output)) { | |
1349 | WARN("Invalid output type, expected %s node", | |
1350 | config_element_consumer_output); | |
1351 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1352 | goto end; | |
1353 | } | |
1354 | ||
1355 | ret = process_consumer_output(consumer_output_node, &output); | |
1356 | if (ret) { | |
1357 | goto end; | |
1358 | } | |
1359 | } | |
1360 | ||
21a3f144 JR |
1361 | control_uri = output.control_uri; |
1362 | data_uri = output.data_uri; | |
1363 | path = output.path; | |
1364 | ||
1b08cbce JR |
1365 | /* Check for override and apply them */ |
1366 | if (overrides) { | |
1367 | if (overrides->path_url) { | |
1b08cbce | 1368 | path = overrides->path_url; |
21a3f144 JR |
1369 | /* control/data_uri are null */; |
1370 | control_uri = NULL; | |
1371 | data_uri = NULL; | |
1b08cbce JR |
1372 | } else { |
1373 | if (overrides->ctrl_url) { | |
1b08cbce | 1374 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1375 | /* path is null */ |
1376 | path = NULL; | |
1b08cbce JR |
1377 | } |
1378 | if (overrides->data_url) { | |
1b08cbce | 1379 | data_uri = overrides->data_url; |
21a3f144 JR |
1380 | /* path is null */ |
1381 | path = NULL; | |
1b08cbce JR |
1382 | } |
1383 | } | |
1b08cbce JR |
1384 | } |
1385 | ||
21a3f144 | 1386 | |
1b08cbce | 1387 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1388 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1389 | goto end; | |
1390 | } | |
1391 | ||
1b08cbce | 1392 | if (control_uri || data_uri) { |
dcf266c0 JG |
1393 | /* network destination */ |
1394 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1395 | /* |
1396 | * URLs are provided for sure since the test above make sure that | |
1397 | * with a live timer the data and control URIs are provided. So, | |
1398 | * NULL is passed here and will be set right after. | |
1399 | */ | |
1400 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1401 | } else { |
1402 | ret = lttng_create_session(name, NULL); | |
1403 | } | |
1404 | if (ret) { | |
1405 | goto end; | |
1406 | } | |
1407 | ||
1b08cbce | 1408 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1409 | if (ret) { |
1410 | goto end; | |
dcf266c0 | 1411 | } |
95681498 | 1412 | |
dcf266c0 JG |
1413 | } else { |
1414 | /* either local output or no output */ | |
1b08cbce | 1415 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1416 | if (ret) { |
1417 | goto end; | |
1418 | } | |
1419 | } | |
1420 | end: | |
1421 | free(output.path); | |
1422 | free(output.control_uri); | |
1423 | free(output.data_uri); | |
1424 | return ret; | |
1425 | } | |
c1e83fb4 FD |
1426 | |
1427 | static | |
1428 | struct lttng_userspace_probe_location * | |
1429 | process_userspace_probe_function_attribute_node( | |
1430 | xmlNodePtr attribute_node) | |
1431 | { | |
c1e83fb4 | 1432 | xmlNodePtr function_attribute_node; |
717d2dba | 1433 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1434 | struct lttng_userspace_probe_location *location = NULL; |
1435 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1436 | ||
1437 | /* | |
1438 | * Process userspace probe location function attributes. The order of | |
1439 | * the fields are not guaranteed so we need to iterate over all fields | |
1440 | * and check at the end if everything we need for this location type is | |
1441 | * there. | |
1442 | */ | |
1443 | for (function_attribute_node = | |
1444 | xmlFirstElementChild(attribute_node); | |
1445 | function_attribute_node; | |
1446 | function_attribute_node = xmlNextElementSibling( | |
1447 | function_attribute_node)) { | |
1448 | /* Handle function name, binary path and lookup method. */ | |
1449 | if (!strcmp((const char *) function_attribute_node->name, | |
1450 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1451 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1452 | if (!function_name) { |
c1e83fb4 FD |
1453 | goto error; |
1454 | } | |
1455 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1456 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1457 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1458 | if (!binary_path) { |
c1e83fb4 FD |
1459 | goto error; |
1460 | } | |
1461 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1462 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1463 | char *lookup_method_name; |
c1e83fb4 | 1464 | |
717d2dba JG |
1465 | lookup_method_name = (char *) xmlNodeGetContent( |
1466 | function_attribute_node); | |
c1e83fb4 | 1467 | if (!lookup_method_name) { |
c1e83fb4 FD |
1468 | goto error; |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * function_default lookup method defaults to | |
1473 | * function_elf lookup method at the moment. | |
1474 | */ | |
1475 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1476 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1477 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1478 | if (!lookup_method) { | |
1479 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1480 | } |
1481 | } else { | |
717d2dba JG |
1482 | WARN("Unknown function lookup method"); |
1483 | } | |
1484 | ||
1485 | free(lookup_method_name); | |
1486 | if (!lookup_method) { | |
c1e83fb4 FD |
1487 | goto error; |
1488 | } | |
1489 | } else { | |
1490 | goto error; | |
1491 | } | |
1492 | ||
1493 | /* Check if all the necessary fields were found. */ | |
1494 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1495 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1496 | location = |
1497 | lttng_userspace_probe_location_function_create( | |
1498 | binary_path, function_name, | |
1499 | lookup_method); | |
717d2dba JG |
1500 | lookup_method = NULL; |
1501 | goto error; | |
c1e83fb4 FD |
1502 | } |
1503 | } | |
1504 | error: | |
717d2dba | 1505 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1506 | free(binary_path); |
1507 | free(function_name); | |
c1e83fb4 FD |
1508 | return location; |
1509 | } | |
1510 | ||
1511 | static | |
1512 | struct lttng_userspace_probe_location * | |
1513 | process_userspace_probe_tracepoint_attribute_node( | |
1514 | xmlNodePtr attribute_node) | |
1515 | { | |
c1e83fb4 | 1516 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1517 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1518 | struct lttng_userspace_probe_location *location = NULL; | |
1519 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1520 | ||
1521 | /* | |
1522 | * Process userspace probe location tracepoint attributes. The order of | |
1523 | * the fields are not guaranteed so we need to iterate over all fields | |
1524 | * and check at the end if everything we need for this location type is | |
1525 | * there. | |
1526 | */ | |
1527 | for (tracepoint_attribute_node = | |
1528 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1529 | tracepoint_attribute_node = xmlNextElementSibling( | |
1530 | tracepoint_attribute_node)) { | |
1531 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1532 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1533 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1534 | if (!probe_name) { |
c1e83fb4 FD |
1535 | goto error; |
1536 | } | |
1537 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1538 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1539 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1540 | if (!provider_name) { |
c1e83fb4 FD |
1541 | goto error; |
1542 | } | |
1543 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1544 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1545 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1546 | if (!binary_path) { |
c1e83fb4 FD |
1547 | goto error; |
1548 | } | |
1549 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1550 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1551 | char *lookup_method_name; |
c1e83fb4 | 1552 | |
717d2dba JG |
1553 | lookup_method_name = (char *) xmlNodeGetContent( |
1554 | tracepoint_attribute_node); | |
c1e83fb4 | 1555 | if (!lookup_method_name) { |
c1e83fb4 FD |
1556 | goto error; |
1557 | } | |
1558 | ||
1559 | if (!strcmp(lookup_method_name, | |
1560 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1561 | lookup_method = | |
1562 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1563 | if (!lookup_method) { | |
1564 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1565 | } |
1566 | } else { | |
717d2dba JG |
1567 | WARN("Unknown tracepoint lookup method"); |
1568 | } | |
1569 | ||
1570 | free(lookup_method_name); | |
1571 | if (!lookup_method) { | |
c1e83fb4 FD |
1572 | goto error; |
1573 | } | |
1574 | } else { | |
717d2dba | 1575 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1576 | goto error; |
1577 | } | |
1578 | ||
1579 | /* Check if all the necessary fields were found. */ | |
1580 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1581 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1582 | location = |
1583 | lttng_userspace_probe_location_tracepoint_create( | |
1584 | binary_path, provider_name, | |
1585 | probe_name, lookup_method); | |
6bd61b96 | 1586 | lookup_method = NULL; |
717d2dba | 1587 | goto error; |
c1e83fb4 FD |
1588 | } |
1589 | } | |
1590 | error: | |
717d2dba | 1591 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1592 | free(binary_path); |
c1e83fb4 | 1593 | free(provider_name); |
717d2dba | 1594 | free(probe_name); |
c1e83fb4 FD |
1595 | return location; |
1596 | } | |
1597 | ||
dcf266c0 JG |
1598 | static |
1599 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1600 | struct lttng_event_probe_attr *attr) | |
1601 | { | |
1602 | int ret; | |
1603 | ||
a0377dfe FD |
1604 | LTTNG_ASSERT(probe_attribute_node); |
1605 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1606 | |
1607 | if (!strcmp((const char *) probe_attribute_node->name, | |
1608 | config_element_address)) { | |
1609 | xmlChar *content; | |
1610 | uint64_t addr = 0; | |
1611 | ||
1612 | /* addr */ | |
1613 | content = xmlNodeGetContent(probe_attribute_node); | |
1614 | if (!content) { | |
1615 | ret = -LTTNG_ERR_NOMEM; | |
1616 | goto end; | |
1617 | } | |
1618 | ||
1619 | ret = parse_uint(content, &addr); | |
1620 | free(content); | |
1621 | if (ret) { | |
1622 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1623 | goto end; | |
1624 | } | |
1625 | ||
1626 | attr->addr = addr; | |
1627 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1628 | config_element_offset)) { | |
1629 | xmlChar *content; | |
1630 | uint64_t offset = 0; | |
1631 | ||
1632 | /* offset */ | |
1633 | content = xmlNodeGetContent(probe_attribute_node); | |
1634 | if (!content) { | |
1635 | ret = -LTTNG_ERR_NOMEM; | |
1636 | goto end; | |
1637 | } | |
1638 | ||
1639 | ret = parse_uint(content, &offset); | |
1640 | free(content); | |
1641 | if (ret) { | |
1642 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1643 | goto end; | |
1644 | } | |
1645 | ||
1646 | attr->offset = offset; | |
1647 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1648 | config_element_symbol_name)) { | |
1649 | xmlChar *content; | |
dcf266c0 JG |
1650 | |
1651 | /* symbol_name */ | |
1652 | content = xmlNodeGetContent(probe_attribute_node); | |
1653 | if (!content) { | |
1654 | ret = -LTTNG_ERR_NOMEM; | |
1655 | goto end; | |
1656 | } | |
1657 | ||
d2e67842 JG |
1658 | ret = lttng_strncpy(attr->symbol_name, |
1659 | (const char *) content, | |
1660 | LTTNG_SYMBOL_NAME_LEN); | |
1661 | if (ret == -1) { | |
1662 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1663 | (const char *) content, | |
1664 | strlen((const char *) content), | |
1665 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1666 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1667 | free(content); | |
1668 | goto end; | |
1669 | } | |
dcf266c0 JG |
1670 | free(content); |
1671 | } | |
1672 | ret = 0; | |
1673 | end: | |
1674 | return ret; | |
1675 | } | |
1676 | ||
1677 | static | |
1678 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1679 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1680 | { |
d7b645e2 | 1681 | int ret = 0, i; |
dcf266c0 | 1682 | xmlNodePtr node; |
91744e14 | 1683 | struct lttng_event *event; |
dcf266c0 JG |
1684 | char **exclusions = NULL; |
1685 | unsigned long exclusion_count = 0; | |
1686 | char *filter_expression = NULL; | |
1687 | ||
a0377dfe FD |
1688 | LTTNG_ASSERT(event_node); |
1689 | LTTNG_ASSERT(handle); | |
1690 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1691 | |
91744e14 FD |
1692 | event = lttng_event_create(); |
1693 | if (!event) { | |
1694 | ret = -LTTNG_ERR_NOMEM; | |
1695 | goto end; | |
1696 | } | |
dcf266c0 | 1697 | |
f40eba3d JG |
1698 | /* Initialize default log level which varies by domain */ |
1699 | switch (handle->domain.type) | |
1700 | { | |
1701 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1702 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1703 | break; |
1704 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1705 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1706 | break; |
1707 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1708 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1709 | break; |
1710 | case LTTNG_DOMAIN_UST: | |
1711 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1712 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1713 | break; |
1714 | default: | |
a0377dfe | 1715 | abort(); |
f40eba3d JG |
1716 | } |
1717 | ||
dcf266c0 JG |
1718 | for (node = xmlFirstElementChild(event_node); node; |
1719 | node = xmlNextElementSibling(node)) { | |
1720 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1721 | xmlChar *content; | |
dcf266c0 JG |
1722 | |
1723 | /* name */ | |
1724 | content = xmlNodeGetContent(node); | |
1725 | if (!content) { | |
1726 | ret = -LTTNG_ERR_NOMEM; | |
1727 | goto end; | |
1728 | } | |
1729 | ||
91744e14 | 1730 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1731 | (const char *) content, |
1732 | LTTNG_SYMBOL_NAME_LEN); | |
1733 | if (ret == -1) { | |
1734 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1735 | (const char *) content, | |
1736 | strlen((const char *) content), | |
1737 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1738 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1739 | free(content); | |
1740 | goto end; | |
1741 | } | |
dcf266c0 JG |
1742 | free(content); |
1743 | } else if (!strcmp((const char *) node->name, | |
1744 | config_element_enabled)) { | |
1745 | xmlChar *content = xmlNodeGetContent(node); | |
1746 | ||
1747 | /* enabled */ | |
1748 | if (!content) { | |
1749 | ret = -LTTNG_ERR_NOMEM; | |
1750 | goto end; | |
1751 | } | |
1752 | ||
91744e14 | 1753 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1754 | free(content); |
1755 | if (ret) { | |
1756 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1757 | goto end; | |
1758 | } | |
1759 | } else if (!strcmp((const char *) node->name, | |
1760 | config_element_type)) { | |
1761 | xmlChar *content = xmlNodeGetContent(node); | |
1762 | ||
1763 | /* type */ | |
1764 | if (!content) { | |
1765 | ret = -LTTNG_ERR_NOMEM; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | ret = get_event_type(content); | |
1770 | free(content); | |
1771 | if (ret < 0) { | |
1772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
3afa94ae | 1776 | event->type = (lttng_event_type) ret; |
dcf266c0 JG |
1777 | } else if (!strcmp((const char *) node->name, |
1778 | config_element_loglevel_type)) { | |
1779 | xmlChar *content = xmlNodeGetContent(node); | |
1780 | ||
1781 | /* loglevel_type */ | |
1782 | if (!content) { | |
1783 | ret = -LTTNG_ERR_NOMEM; | |
1784 | goto end; | |
1785 | } | |
1786 | ||
1787 | ret = get_loglevel_type(content); | |
1788 | free(content); | |
1789 | if (ret < 0) { | |
1790 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1791 | goto end; | |
1792 | } | |
1793 | ||
3afa94ae | 1794 | event->loglevel_type = (lttng_loglevel_type) ret; |
dcf266c0 JG |
1795 | } else if (!strcmp((const char *) node->name, |
1796 | config_element_loglevel)) { | |
1797 | xmlChar *content; | |
1798 | int64_t loglevel = 0; | |
1799 | ||
1800 | /* loglevel */ | |
1801 | content = xmlNodeGetContent(node); | |
1802 | if (!content) { | |
1803 | ret = -LTTNG_ERR_NOMEM; | |
1804 | goto end; | |
1805 | } | |
1806 | ||
1807 | ret = parse_int(content, &loglevel); | |
1808 | free(content); | |
1809 | if (ret) { | |
1810 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1811 | goto end; | |
1812 | } | |
1813 | ||
1814 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1815 | WARN("loglevel out of range."); | |
1816 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1817 | goto end; | |
1818 | } | |
1819 | ||
91744e14 | 1820 | event->loglevel = loglevel; |
dcf266c0 JG |
1821 | } else if (!strcmp((const char *) node->name, |
1822 | config_element_filter)) { | |
1823 | xmlChar *content = | |
1824 | xmlNodeGetContent(node); | |
1825 | ||
1826 | /* filter */ | |
1827 | if (!content) { | |
1828 | ret = -LTTNG_ERR_NOMEM; | |
1829 | goto end; | |
1830 | } | |
1831 | ||
02d8ac3d | 1832 | free(filter_expression); |
dcf266c0 JG |
1833 | filter_expression = strdup((char *) content); |
1834 | free(content); | |
1835 | if (!filter_expression) { | |
1836 | ret = -LTTNG_ERR_NOMEM; | |
1837 | goto end; | |
1838 | } | |
1839 | } else if (!strcmp((const char *) node->name, | |
1840 | config_element_exclusions)) { | |
1841 | xmlNodePtr exclusion_node; | |
1842 | int exclusion_index = 0; | |
1843 | ||
1844 | /* exclusions */ | |
1845 | if (exclusions) { | |
1846 | /* | |
1847 | * Exclusions has already been initialized, | |
1848 | * invalid file. | |
1849 | */ | |
1850 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1851 | goto end; | |
1852 | } | |
1853 | ||
1854 | exclusion_count = xmlChildElementCount(node); | |
1855 | if (!exclusion_count) { | |
1856 | continue; | |
1857 | } | |
1858 | ||
3afa94ae | 1859 | exclusions = (char **) zmalloc(exclusion_count * sizeof(char *)); |
dcf266c0 JG |
1860 | if (!exclusions) { |
1861 | exclusion_count = 0; | |
1862 | ret = -LTTNG_ERR_NOMEM; | |
1863 | goto end; | |
1864 | } | |
1865 | ||
1866 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1867 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1868 | xmlChar *content = | |
1869 | xmlNodeGetContent(exclusion_node); | |
1870 | ||
1871 | if (!content) { | |
1872 | ret = -LTTNG_ERR_NOMEM; | |
1873 | goto end; | |
1874 | } | |
1875 | ||
1876 | exclusions[exclusion_index] = strdup((const char *) content); | |
1877 | free(content); | |
1878 | if (!exclusions[exclusion_index]) { | |
1879 | ret = -LTTNG_ERR_NOMEM; | |
1880 | goto end; | |
1881 | } | |
1882 | exclusion_index++; | |
1883 | } | |
1884 | ||
91744e14 | 1885 | event->exclusion = 1; |
dcf266c0 JG |
1886 | } else if (!strcmp((const char *) node->name, |
1887 | config_element_attributes)) { | |
1888 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1889 | ||
1890 | /* attributes */ | |
1891 | if (!attribute_node) { | |
1892 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1893 | goto end; | |
1894 | } | |
1895 | ||
c1e83fb4 | 1896 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
1897 | config_element_probe_attributes)) { |
1898 | xmlNodePtr probe_attribute_node; | |
1899 | ||
1900 | /* probe_attributes */ | |
1901 | for (probe_attribute_node = | |
1902 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1903 | probe_attribute_node = xmlNextElementSibling( | |
1904 | probe_attribute_node)) { | |
1905 | ||
1906 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 1907 | &event->attr.probe); |
dcf266c0 JG |
1908 | if (ret) { |
1909 | goto end; | |
1910 | } | |
1911 | } | |
c1e83fb4 FD |
1912 | } else if (!strcmp((const char *) attribute_node->name, |
1913 | config_element_function_attributes)) { | |
dcf266c0 JG |
1914 | size_t sym_len; |
1915 | xmlChar *content; | |
1916 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1917 | ||
1918 | /* function_attributes */ | |
1919 | content = xmlNodeGetContent(symbol_node); | |
1920 | if (!content) { | |
1921 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1922 | goto end; | |
1923 | } | |
1924 | ||
1925 | sym_len = strlen((char *) content); | |
1926 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1927 | WARN("Function name too long."); | |
1928 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1929 | free(content); | |
1930 | goto end; | |
1931 | } | |
1932 | ||
d2e67842 | 1933 | ret = lttng_strncpy( |
91744e14 | 1934 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
1935 | (char *) content, sym_len); |
1936 | if (ret == -1) { | |
1937 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1938 | free(content); | |
1939 | goto end; | |
1940 | } | |
dcf266c0 | 1941 | free(content); |
c1e83fb4 FD |
1942 | } else if (!strcmp((const char *) attribute_node->name, |
1943 | config_element_userspace_probe_tracepoint_attributes)) { | |
1944 | struct lttng_userspace_probe_location *location; | |
1945 | ||
1946 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
1947 | if (!location) { | |
1948 | WARN("Error processing userspace probe tracepoint attribute"); | |
1949 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1950 | goto end; | |
1951 | } | |
1952 | ret = lttng_event_set_userspace_probe_location( | |
1953 | event, location); | |
1954 | if (ret) { | |
1955 | WARN("Error setting userspace probe location field"); | |
1956 | lttng_userspace_probe_location_destroy( | |
1957 | location); | |
1958 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1959 | goto end; | |
1960 | } | |
1961 | } else if (!strcmp((const char *) attribute_node->name, | |
1962 | config_element_userspace_probe_function_attributes)) { | |
1963 | struct lttng_userspace_probe_location *location; | |
1964 | ||
1965 | location = | |
1966 | process_userspace_probe_function_attribute_node( | |
1967 | attribute_node); | |
1968 | if (!location) { | |
1969 | WARN("Error processing userspace probe function attribute"); | |
1970 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1971 | goto end; | |
1972 | } | |
1973 | ||
1974 | ret = lttng_event_set_userspace_probe_location( | |
1975 | event, location); | |
1976 | if (ret) { | |
1977 | WARN("Error setting userspace probe location field"); | |
1978 | lttng_userspace_probe_location_destroy( | |
1979 | location); | |
1980 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1981 | goto end; | |
1982 | } | |
1983 | } else { | |
1984 | /* Unknown event attribute. */ | |
1985 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1986 | goto end; | |
dcf266c0 JG |
1987 | } |
1988 | } | |
1989 | } | |
1990 | ||
91744e14 FD |
1991 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
1992 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
1993 | filter_expression, exclusion_count, exclusions); |
1994 | if (ret < 0) { | |
91744e14 | 1995 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
1996 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1997 | goto end; | |
1998 | } | |
065321e9 | 1999 | } |
d2e67842 | 2000 | ret = 0; |
dcf266c0 JG |
2001 | end: |
2002 | for (i = 0; i < exclusion_count; i++) { | |
2003 | free(exclusions[i]); | |
2004 | } | |
2005 | ||
b33f872b | 2006 | lttng_event_destroy(event); |
dcf266c0 JG |
2007 | free(exclusions); |
2008 | free(filter_expression); | |
2009 | return ret; | |
2010 | } | |
2011 | ||
2012 | static | |
2013 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2014 | const char *channel_name) | |
2015 | { | |
2016 | int ret = 0; | |
d7b645e2 | 2017 | struct lttng_event event; |
dcf266c0 JG |
2018 | xmlNodePtr node; |
2019 | ||
a0377dfe FD |
2020 | LTTNG_ASSERT(events_node); |
2021 | LTTNG_ASSERT(handle); | |
2022 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2023 | |
2024 | for (node = xmlFirstElementChild(events_node); node; | |
2025 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2026 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2027 | if (ret) { |
2028 | goto end; | |
2029 | } | |
2030 | } | |
d7b645e2 JR |
2031 | |
2032 | /* | |
2033 | * Disable all events to enable only the necessary events. | |
2034 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2035 | * force this approach. | |
2036 | */ | |
2037 | memset(&event, 0, sizeof(event)); | |
2038 | event.loglevel = -1; | |
2039 | event.type = LTTNG_EVENT_ALL; | |
2040 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2041 | if (ret) { | |
2042 | goto end; | |
2043 | } | |
2044 | ||
2045 | for (node = xmlFirstElementChild(events_node); node; | |
2046 | node = xmlNextElementSibling(node)) { | |
2047 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2048 | if (ret) { | |
2049 | goto end; | |
2050 | } | |
2051 | } | |
2052 | ||
dcf266c0 JG |
2053 | end: |
2054 | return ret; | |
2055 | } | |
2056 | ||
2057 | static | |
2058 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2059 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2060 | xmlNodePtr *events_node) | |
2061 | { | |
2062 | int ret; | |
2063 | ||
a0377dfe FD |
2064 | LTTNG_ASSERT(attr_node); |
2065 | LTTNG_ASSERT(channel); | |
2066 | LTTNG_ASSERT(contexts_node); | |
2067 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2068 | |
2069 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2070 | xmlChar *content; | |
dcf266c0 JG |
2071 | |
2072 | /* name */ | |
2073 | content = xmlNodeGetContent(attr_node); | |
2074 | if (!content) { | |
2075 | ret = -LTTNG_ERR_NOMEM; | |
2076 | goto end; | |
2077 | } | |
2078 | ||
d2e67842 JG |
2079 | ret = lttng_strncpy(channel->name, |
2080 | (const char *) content, | |
2081 | LTTNG_SYMBOL_NAME_LEN); | |
2082 | if (ret == -1) { | |
2083 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2084 | (const char *) content, | |
2085 | strlen((const char *) content), | |
2086 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2087 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2088 | free(content); | |
2089 | goto end; | |
2090 | } | |
dcf266c0 JG |
2091 | free(content); |
2092 | } else if (!strcmp((const char *) attr_node->name, | |
2093 | config_element_enabled)) { | |
2094 | xmlChar *content; | |
2095 | int enabled; | |
2096 | ||
2097 | /* enabled */ | |
2098 | content = xmlNodeGetContent(attr_node); | |
2099 | if (!content) { | |
2100 | ret = -LTTNG_ERR_NOMEM; | |
2101 | goto end; | |
2102 | } | |
2103 | ||
2104 | ret = parse_bool(content, &enabled); | |
2105 | free(content); | |
2106 | if (ret) { | |
2107 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2108 | goto end; | |
2109 | } | |
2110 | ||
2111 | channel->enabled = enabled; | |
2112 | } else if (!strcmp((const char *) attr_node->name, | |
2113 | config_element_overwrite_mode)) { | |
2114 | xmlChar *content; | |
2115 | ||
2116 | /* overwrite_mode */ | |
2117 | content = xmlNodeGetContent(attr_node); | |
2118 | if (!content) { | |
2119 | ret = -LTTNG_ERR_NOMEM; | |
2120 | goto end; | |
2121 | } | |
2122 | ||
2123 | ret = get_overwrite_mode(content); | |
2124 | free(content); | |
2125 | if (ret < 0) { | |
2126 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2127 | goto end; | |
2128 | } | |
2129 | ||
2130 | channel->attr.overwrite = ret; | |
2131 | } else if (!strcmp((const char *) attr_node->name, | |
2132 | config_element_subbuf_size)) { | |
2133 | xmlChar *content; | |
2134 | ||
2135 | /* subbuffer_size */ | |
2136 | content = xmlNodeGetContent(attr_node); | |
2137 | if (!content) { | |
2138 | ret = -LTTNG_ERR_NOMEM; | |
2139 | goto end; | |
2140 | } | |
2141 | ||
2142 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2143 | free(content); | |
2144 | if (ret) { | |
2145 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2146 | goto end; | |
2147 | } | |
2148 | } else if (!strcmp((const char *) attr_node->name, | |
2149 | config_element_num_subbuf)) { | |
2150 | xmlChar *content; | |
2151 | ||
2152 | /* subbuffer_count */ | |
2153 | content = xmlNodeGetContent(attr_node); | |
2154 | if (!content) { | |
2155 | ret = -LTTNG_ERR_NOMEM; | |
2156 | goto end; | |
2157 | } | |
2158 | ||
2159 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2160 | free(content); | |
2161 | if (ret) { | |
2162 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2163 | goto end; | |
2164 | } | |
2165 | } else if (!strcmp((const char *) attr_node->name, | |
2166 | config_element_switch_timer_interval)) { | |
2167 | xmlChar *content; | |
2168 | uint64_t switch_timer_interval = 0; | |
2169 | ||
2170 | /* switch_timer_interval */ | |
2171 | content = xmlNodeGetContent(attr_node); | |
2172 | if (!content) { | |
2173 | ret = -LTTNG_ERR_NOMEM; | |
2174 | goto end; | |
2175 | } | |
2176 | ||
2177 | ret = parse_uint(content, &switch_timer_interval); | |
2178 | free(content); | |
2179 | if (ret) { | |
2180 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2181 | goto end; | |
2182 | } | |
2183 | ||
2184 | if (switch_timer_interval > UINT_MAX) { | |
2185 | WARN("switch_timer_interval out of range."); | |
2186 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2187 | goto end; | |
2188 | } | |
2189 | ||
2190 | channel->attr.switch_timer_interval = | |
2191 | switch_timer_interval; | |
2192 | } else if (!strcmp((const char *) attr_node->name, | |
2193 | config_element_read_timer_interval)) { | |
2194 | xmlChar *content; | |
2195 | uint64_t read_timer_interval = 0; | |
2196 | ||
2197 | /* read_timer_interval */ | |
2198 | content = xmlNodeGetContent(attr_node); | |
2199 | if (!content) { | |
2200 | ret = -LTTNG_ERR_NOMEM; | |
2201 | goto end; | |
2202 | } | |
2203 | ||
2204 | ret = parse_uint(content, &read_timer_interval); | |
2205 | free(content); | |
2206 | if (ret) { | |
2207 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2208 | goto end; | |
2209 | } | |
2210 | ||
2211 | if (read_timer_interval > UINT_MAX) { | |
2212 | WARN("read_timer_interval out of range."); | |
2213 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2214 | goto end; | |
2215 | } | |
2216 | ||
2217 | channel->attr.read_timer_interval = | |
2218 | read_timer_interval; | |
2219 | } else if (!strcmp((const char *) attr_node->name, | |
2220 | config_element_output_type)) { | |
2221 | xmlChar *content; | |
2222 | ||
2223 | /* output_type */ | |
2224 | content = xmlNodeGetContent(attr_node); | |
2225 | if (!content) { | |
2226 | ret = -LTTNG_ERR_NOMEM; | |
2227 | goto end; | |
2228 | } | |
2229 | ||
2230 | ret = get_output_type(content); | |
2231 | free(content); | |
2232 | if (ret < 0) { | |
2233 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2234 | goto end; | |
2235 | } | |
2236 | ||
3afa94ae | 2237 | channel->attr.output = (lttng_event_output) ret; |
dcf266c0 JG |
2238 | } else if (!strcmp((const char *) attr_node->name, |
2239 | config_element_tracefile_size)) { | |
2240 | xmlChar *content; | |
2241 | ||
2242 | /* tracefile_size */ | |
2243 | content = xmlNodeGetContent(attr_node); | |
2244 | if (!content) { | |
2245 | ret = -LTTNG_ERR_NOMEM; | |
2246 | goto end; | |
2247 | } | |
2248 | ||
2249 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2250 | free(content); | |
2251 | if (ret) { | |
2252 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2253 | goto end; | |
2254 | } | |
2255 | } else if (!strcmp((const char *) attr_node->name, | |
2256 | config_element_tracefile_count)) { | |
2257 | xmlChar *content; | |
2258 | ||
2259 | /* tracefile_count */ | |
2260 | content = xmlNodeGetContent(attr_node); | |
2261 | if (!content) { | |
2262 | ret = -LTTNG_ERR_NOMEM; | |
2263 | goto end; | |
2264 | } | |
2265 | ||
2266 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2267 | free(content); | |
2268 | if (ret) { | |
2269 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2270 | goto end; | |
2271 | } | |
2272 | } else if (!strcmp((const char *) attr_node->name, | |
2273 | config_element_live_timer_interval)) { | |
2274 | xmlChar *content; | |
2275 | uint64_t live_timer_interval = 0; | |
2276 | ||
2277 | /* live_timer_interval */ | |
2278 | content = xmlNodeGetContent(attr_node); | |
2279 | if (!content) { | |
2280 | ret = -LTTNG_ERR_NOMEM; | |
2281 | goto end; | |
2282 | } | |
2283 | ||
2284 | ret = parse_uint(content, &live_timer_interval); | |
2285 | free(content); | |
2286 | if (ret) { | |
2287 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2288 | goto end; | |
2289 | } | |
2290 | ||
2291 | if (live_timer_interval > UINT_MAX) { | |
2292 | WARN("live_timer_interval out of range."); | |
2293 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2294 | goto end; | |
2295 | } | |
2296 | ||
2297 | channel->attr.live_timer_interval = | |
2298 | live_timer_interval; | |
4fc2b126 JR |
2299 | } else if (!strcmp((const char *) attr_node->name, |
2300 | config_element_monitor_timer_interval)) { | |
2301 | xmlChar *content; | |
2302 | uint64_t monitor_timer_interval = 0; | |
2303 | ||
2304 | /* monitor_timer_interval */ | |
2305 | content = xmlNodeGetContent(attr_node); | |
2306 | if (!content) { | |
2307 | ret = -LTTNG_ERR_NOMEM; | |
2308 | goto end; | |
2309 | } | |
2310 | ||
2311 | ret = parse_uint(content, &monitor_timer_interval); | |
2312 | free(content); | |
2313 | if (ret) { | |
2314 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2315 | goto end; | |
2316 | } | |
2317 | ||
2318 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2319 | monitor_timer_interval); | |
2320 | if (ret) { | |
2321 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2322 | goto end; | |
2323 | } | |
275472aa JR |
2324 | } else if (!strcmp((const char *) attr_node->name, |
2325 | config_element_blocking_timeout)) { | |
2326 | xmlChar *content; | |
2327 | int64_t blocking_timeout = 0; | |
2328 | ||
2329 | /* blocking_timeout */ | |
2330 | content = xmlNodeGetContent(attr_node); | |
2331 | if (!content) { | |
2332 | ret = -LTTNG_ERR_NOMEM; | |
2333 | goto end; | |
2334 | } | |
2335 | ||
2336 | ret = parse_int(content, &blocking_timeout); | |
2337 | free(content); | |
2338 | if (ret) { | |
2339 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2340 | goto end; | |
2341 | } | |
2342 | ||
2343 | ret = lttng_channel_set_blocking_timeout(channel, | |
2344 | blocking_timeout); | |
2345 | if (ret) { | |
2346 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2347 | goto end; | |
2348 | } | |
dcf266c0 JG |
2349 | } else if (!strcmp((const char *) attr_node->name, |
2350 | config_element_events)) { | |
2351 | /* events */ | |
2352 | *events_node = attr_node; | |
2353 | } else { | |
2354 | /* contexts */ | |
2355 | *contexts_node = attr_node; | |
2356 | } | |
2357 | ret = 0; | |
2358 | end: | |
2359 | return ret; | |
2360 | } | |
2361 | ||
2362 | static | |
2363 | int process_context_node(xmlNodePtr context_node, | |
2364 | struct lttng_handle *handle, const char *channel_name) | |
2365 | { | |
2366 | int ret; | |
2367 | struct lttng_event_context context; | |
2368 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2369 | ||
a0377dfe FD |
2370 | LTTNG_ASSERT(handle); |
2371 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2372 | |
2373 | if (!context_child_node) { | |
2374 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2375 | goto end; | |
2376 | } | |
2377 | ||
2378 | memset(&context, 0, sizeof(context)); | |
2379 | ||
2380 | if (!strcmp((const char *) context_child_node->name, | |
2381 | config_element_type)) { | |
2382 | /* type */ | |
2383 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2384 | |
dcf266c0 JG |
2385 | if (!content) { |
2386 | ret = -LTTNG_ERR_NOMEM; | |
2387 | goto end; | |
2388 | } | |
2389 | ||
2390 | ret = get_context_type(content); | |
2391 | free(content); | |
2392 | if (ret < 0) { | |
2393 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2394 | goto end; | |
2395 | } | |
2396 | ||
3afa94ae | 2397 | context.ctx = (lttng_event_context_type) ret; |
045fc617 JG |
2398 | } else if (!strcmp((const char *) context_child_node->name, |
2399 | config_element_context_perf)) { | |
2400 | /* perf */ | |
dcf266c0 JG |
2401 | xmlNodePtr perf_attr_node; |
2402 | ||
14ce5bd8 JG |
2403 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2404 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2405 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2406 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2407 | perf_attr_node; perf_attr_node = | |
2408 | xmlNextElementSibling(perf_attr_node)) { | |
2409 | if (!strcmp((const char *) perf_attr_node->name, | |
2410 | config_element_type)) { | |
2411 | xmlChar *content; | |
2412 | uint64_t type = 0; | |
2413 | ||
2414 | /* type */ | |
2415 | content = xmlNodeGetContent(perf_attr_node); | |
2416 | if (!content) { | |
2417 | ret = -LTTNG_ERR_NOMEM; | |
2418 | goto end; | |
2419 | } | |
2420 | ||
2421 | ret = parse_uint(content, &type); | |
2422 | free(content); | |
2423 | if (ret) { | |
2424 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2425 | goto end; | |
2426 | } | |
2427 | ||
2428 | if (type > UINT32_MAX) { | |
2429 | WARN("perf context type out of range."); | |
2430 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2431 | goto end; | |
2432 | } | |
2433 | ||
2434 | context.u.perf_counter.type = type; | |
2435 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2436 | config_element_config)) { | |
2437 | xmlChar *content; | |
2438 | uint64_t config = 0; | |
2439 | ||
2440 | /* config */ | |
2441 | content = xmlNodeGetContent(perf_attr_node); | |
2442 | if (!content) { | |
2443 | ret = -LTTNG_ERR_NOMEM; | |
2444 | goto end; | |
2445 | } | |
2446 | ||
2447 | ret = parse_uint(content, &config); | |
2448 | free(content); | |
2449 | if (ret) { | |
2450 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2451 | goto end; | |
2452 | } | |
2453 | ||
2454 | context.u.perf_counter.config = config; | |
2455 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2456 | config_element_name)) { | |
2457 | xmlChar *content; | |
dcf266c0 JG |
2458 | |
2459 | /* name */ | |
2460 | content = xmlNodeGetContent(perf_attr_node); | |
2461 | if (!content) { | |
2462 | ret = -LTTNG_ERR_NOMEM; | |
2463 | goto end; | |
2464 | } | |
2465 | ||
d2e67842 JG |
2466 | ret = lttng_strncpy(context.u.perf_counter.name, |
2467 | (const char *) content, | |
2468 | LTTNG_SYMBOL_NAME_LEN); | |
2469 | if (ret == -1) { | |
2470 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2471 | (const char *) content, | |
2472 | strlen((const char *) content), | |
2473 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2474 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2475 | free(content); | |
2476 | goto end; | |
2477 | } | |
dcf266c0 JG |
2478 | free(content); |
2479 | } | |
2480 | } | |
045fc617 JG |
2481 | } else if (!strcmp((const char *) context_child_node->name, |
2482 | config_element_context_app)) { | |
2483 | /* application context */ | |
2484 | xmlNodePtr app_ctx_node; | |
2485 | ||
2486 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2487 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2488 | app_ctx_node; app_ctx_node = | |
2489 | xmlNextElementSibling(app_ctx_node)) { | |
2490 | xmlChar *content; | |
2491 | char **target = strcmp( | |
2492 | (const char *) app_ctx_node->name, | |
2493 | config_element_context_app_provider_name) == 0 ? | |
2494 | &context.u.app_ctx.provider_name : | |
2495 | &context.u.app_ctx.ctx_name; | |
2496 | ||
2497 | content = xmlNodeGetContent(app_ctx_node); | |
2498 | if (!content) { | |
2499 | ret = -LTTNG_ERR_NOMEM; | |
2500 | goto end; | |
2501 | } | |
2502 | ||
2503 | *target = (char *) content; | |
2504 | } | |
2505 | } else { | |
2506 | /* Unrecognized context type */ | |
2507 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2508 | goto end; | |
dcf266c0 JG |
2509 | } |
2510 | ||
2511 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2512 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2513 | free(context.u.app_ctx.provider_name); | |
2514 | free(context.u.app_ctx.ctx_name); | |
2515 | } | |
dcf266c0 JG |
2516 | end: |
2517 | return ret; | |
2518 | } | |
2519 | ||
2520 | static | |
2521 | int process_contexts_node(xmlNodePtr contexts_node, | |
2522 | struct lttng_handle *handle, const char *channel_name) | |
2523 | { | |
2524 | int ret = 0; | |
2525 | xmlNodePtr context_node; | |
2526 | ||
2527 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2528 | context_node = xmlNextElementSibling(context_node)) { | |
2529 | ret = process_context_node(context_node, handle, channel_name); | |
2530 | if (ret) { | |
2531 | goto end; | |
2532 | } | |
2533 | } | |
2534 | end: | |
2535 | return ret; | |
2536 | } | |
2537 | ||
159b042f | 2538 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2539 | const char **element_id_tracker, |
159b042f JG |
2540 | const char **element_value_type, |
2541 | const char **element_value, | |
2542 | const char **element_value_alias, | |
55c9e7ca JR |
2543 | const char **element_name) |
2544 | { | |
2545 | int ret = 0; | |
2546 | ||
159b042f JG |
2547 | switch (process_attr) { |
2548 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2549 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2550 | *element_value_type = config_element_process_attr_pid_value; | |
2551 | *element_value = config_element_process_attr_id; | |
2552 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2553 | *element_name = NULL; |
2554 | break; | |
159b042f JG |
2555 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2556 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2557 | *element_value_type = config_element_process_attr_vpid_value; | |
2558 | *element_value = config_element_process_attr_id; | |
2559 | *element_value_alias = NULL; | |
55c9e7ca JR |
2560 | *element_name = NULL; |
2561 | break; | |
159b042f JG |
2562 | case LTTNG_PROCESS_ATTR_USER_ID: |
2563 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2564 | *element_value_type = config_element_process_attr_uid_value; | |
2565 | *element_value = config_element_process_attr_id; | |
2566 | *element_value_alias = NULL; | |
55c9e7ca JR |
2567 | *element_name = config_element_name; |
2568 | break; | |
159b042f JG |
2569 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2570 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2571 | *element_value_type = config_element_process_attr_vuid_value; | |
2572 | *element_value = config_element_process_attr_id; | |
2573 | *element_value_alias = NULL; | |
55c9e7ca JR |
2574 | *element_name = config_element_name; |
2575 | break; | |
159b042f JG |
2576 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2577 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2578 | *element_value_type = config_element_process_attr_gid_value; | |
2579 | *element_value = config_element_process_attr_id; | |
2580 | *element_value_alias = NULL; | |
55c9e7ca JR |
2581 | *element_name = config_element_name; |
2582 | break; | |
159b042f JG |
2583 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2584 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2585 | *element_value_type = config_element_process_attr_vgid_value; | |
2586 | *element_value = config_element_process_attr_id; | |
2587 | *element_value_alias = NULL; | |
55c9e7ca JR |
2588 | *element_name = config_element_name; |
2589 | break; | |
2590 | default: | |
2591 | ret = LTTNG_ERR_INVALID; | |
2592 | } | |
2593 | return ret; | |
2594 | } | |
2595 | ||
f7af9a72 JG |
2596 | static int process_legacy_pid_tracker_node( |
2597 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2598 | { | |
2599 | int ret = 0, child_count; | |
2600 | xmlNodePtr targets_node = NULL; | |
2601 | xmlNodePtr node; | |
2602 | const char *element_id_tracker; | |
2603 | const char *element_target_id; | |
2604 | const char *element_id; | |
2605 | const char *element_id_alias; | |
2606 | const char *element_name; | |
2607 | enum lttng_error_code tracker_handle_ret_code; | |
2608 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2609 | enum lttng_process_attr_tracker_handle_status status; | |
2610 | const enum lttng_process_attr process_attr = | |
2611 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2612 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2613 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2614 | ||
a0377dfe | 2615 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2616 | |
2617 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2618 | handle->session_name, handle->domain.type, | |
2619 | process_attr, | |
2620 | &tracker_handle); | |
2621 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2622 | ret = LTTNG_ERR_INVALID; | |
2623 | goto end; | |
2624 | } | |
2625 | ||
2626 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2627 | &element_target_id, &element_id, &element_id_alias, | |
2628 | &element_name); | |
2629 | if (ret) { | |
2630 | goto end; | |
2631 | } | |
2632 | ||
2633 | /* Get the targets node */ | |
2634 | for (node = xmlFirstElementChild(trackers_node); node; | |
2635 | node = xmlNextElementSibling(node)) { | |
2636 | if (!strcmp((const char *) node->name, | |
2637 | config_element_tracker_targets_legacy)) { | |
2638 | targets_node = node; | |
2639 | break; | |
2640 | } | |
3afa94ae | 2641 | } |
f7af9a72 JG |
2642 | |
2643 | if (!targets_node) { | |
2644 | ret = LTTNG_ERR_INVALID; | |
2645 | goto end; | |
2646 | } | |
2647 | ||
2648 | /* Go through all id target node */ | |
2649 | child_count = xmlChildElementCount(targets_node); | |
2650 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2651 | tracker_handle, | |
2652 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2653 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2654 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2655 | ret = LTTNG_ERR_UNK; | |
2656 | goto end; | |
2657 | } | |
2658 | ||
2659 | /* Add all tracked values. */ | |
2660 | for (node = xmlFirstElementChild(targets_node); node; | |
2661 | node = xmlNextElementSibling(node)) { | |
2662 | xmlNodePtr pid_target_node = node; | |
2663 | ||
2664 | /* get pid_target node and track it */ | |
2665 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2666 | node = xmlNextElementSibling(node)) { | |
2667 | if (!strcmp((const char *) node->name, | |
2668 | config_element_tracker_pid_legacy)) { | |
2669 | int64_t id; | |
2670 | xmlChar *content = xmlNodeGetContent(node); | |
2671 | ||
2672 | if (!content) { | |
2673 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2674 | goto end; | |
2675 | } | |
2676 | ||
2677 | ret = parse_int(content, &id); | |
2678 | free(content); | |
2679 | if (ret) { | |
2680 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2681 | goto end; | |
2682 | } | |
2683 | ||
2684 | switch (process_attr) { | |
2685 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2686 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2687 | tracker_handle, | |
2688 | (pid_t) id); | |
2689 | break; | |
2690 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2691 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2692 | tracker_handle, | |
2693 | (pid_t) id); | |
2694 | break; | |
2695 | default: | |
2696 | ret = LTTNG_ERR_INVALID; | |
2697 | goto end; | |
2698 | } | |
2699 | } | |
2700 | switch (status) { | |
2701 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2702 | continue; | |
2703 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2704 | ret = LTTNG_ERR_INVALID; | |
2705 | break; | |
2706 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2707 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2708 | break; | |
2709 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2710 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2711 | break; | |
2712 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2713 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2714 | default: | |
2715 | ret = LTTNG_ERR_UNK; | |
2716 | goto end; | |
2717 | } | |
2718 | } | |
2719 | node = pid_target_node; | |
2720 | } | |
2721 | ||
2722 | end: | |
2723 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2724 | return ret; | |
2725 | } | |
2726 | ||
55c9e7ca JR |
2727 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2728 | struct lttng_handle *handle, | |
159b042f | 2729 | enum lttng_process_attr process_attr) |
847a5916 | 2730 | { |
159b042f | 2731 | int ret = 0, child_count; |
f7af9a72 | 2732 | xmlNodePtr values_node = NULL; |
847a5916 | 2733 | xmlNodePtr node; |
55c9e7ca JR |
2734 | const char *element_id_tracker; |
2735 | const char *element_target_id; | |
2736 | const char *element_id; | |
2737 | const char *element_id_alias; | |
2738 | const char *element_name; | |
159b042f JG |
2739 | enum lttng_error_code tracker_handle_ret_code; |
2740 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2741 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2742 | |
a0377dfe FD |
2743 | LTTNG_ASSERT(handle); |
2744 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2745 | |
159b042f JG |
2746 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2747 | handle->session_name, handle->domain.type, process_attr, | |
2748 | &tracker_handle); | |
2749 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2750 | ret = LTTNG_ERR_INVALID; | |
2751 | goto end; | |
2752 | } | |
2753 | ||
2754 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2755 | &element_target_id, &element_id, &element_id_alias, |
2756 | &element_name); | |
2757 | if (ret) { | |
159b042f | 2758 | goto end; |
55c9e7ca JR |
2759 | } |
2760 | ||
f7af9a72 | 2761 | /* get the values node */ |
55c9e7ca JR |
2762 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2763 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2764 | if (!strcmp((const char *) node->name, |
159b042f | 2765 | config_element_process_attr_values)) { |
f7af9a72 | 2766 | values_node = node; |
847a5916 JR |
2767 | break; |
2768 | } | |
2769 | } | |
2770 | ||
f7af9a72 | 2771 | if (!values_node) { |
847a5916 JR |
2772 | ret = LTTNG_ERR_INVALID; |
2773 | goto end; | |
2774 | } | |
2775 | ||
55c9e7ca | 2776 | /* Go through all id target node */ |
f7af9a72 | 2777 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2778 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2779 | tracker_handle, | |
2780 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2781 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2782 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2783 | ret = LTTNG_ERR_UNK; | |
2784 | goto end; | |
847a5916 | 2785 | } |
159b042f JG |
2786 | |
2787 | /* Add all tracked values. */ | |
f7af9a72 | 2788 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2789 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2790 | xmlNodePtr id_target_node = node; |
847a5916 | 2791 | |
55c9e7ca JR |
2792 | /* get id node and track it */ |
2793 | for (node = xmlFirstElementChild(id_target_node); node; | |
2794 | node = xmlNextElementSibling(node)) { | |
2795 | if (!strcmp((const char *) node->name, element_id) || | |
2796 | (element_id_alias && | |
2797 | !strcmp((const char *) node->name, | |
2798 | element_id_alias))) { | |
2799 | int64_t id; | |
159b042f | 2800 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2801 | |
847a5916 JR |
2802 | if (!content) { |
2803 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2804 | goto end; | |
2805 | } | |
2806 | ||
55c9e7ca | 2807 | ret = parse_int(content, &id); |
847a5916 JR |
2808 | free(content); |
2809 | if (ret) { | |
2810 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2811 | goto end; | |
2812 | } | |
2813 | ||
159b042f JG |
2814 | switch (process_attr) { |
2815 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2816 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2817 | tracker_handle, | |
2818 | (pid_t) id); | |
2819 | break; | |
2820 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2821 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2822 | tracker_handle, | |
2823 | (pid_t) id); | |
2824 | break; | |
2825 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2826 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2827 | tracker_handle, | |
2828 | (uid_t) id); | |
2829 | break; | |
2830 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2831 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2832 | tracker_handle, | |
2833 | (uid_t) id); | |
2834 | break; | |
2835 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2836 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2837 | tracker_handle, | |
2838 | (gid_t) id); | |
2839 | break; | |
2840 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2841 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2842 | tracker_handle, | |
2843 | (gid_t) id); | |
2844 | break; | |
2845 | default: | |
2846 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2847 | goto end; |
2848 | } | |
159b042f JG |
2849 | } else if (element_name && |
2850 | !strcmp((const char *) node->name, | |
2851 | element_name)) { | |
2852 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 2853 | |
55c9e7ca JR |
2854 | if (!content) { |
2855 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2856 | goto end; | |
2857 | } | |
2d97a006 | 2858 | |
159b042f JG |
2859 | switch (process_attr) { |
2860 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2861 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2862 | tracker_handle, | |
2863 | (const char *) content); | |
2864 | break; | |
2865 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2866 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2867 | tracker_handle, | |
2868 | (const char *) content); | |
2869 | break; | |
2870 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2871 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2872 | tracker_handle, | |
2873 | (const char *) content); | |
2874 | break; | |
2875 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2876 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2877 | tracker_handle, | |
2878 | (const char *) content); | |
2879 | break; | |
2880 | default: | |
2881 | free(content); | |
2882 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2883 | goto end; |
2884 | } | |
55c9e7ca | 2885 | free(content); |
159b042f JG |
2886 | } |
2887 | switch (status) { | |
2888 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2889 | continue; | |
2890 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2891 | ret = LTTNG_ERR_INVALID; | |
2892 | break; | |
2893 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2894 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2895 | break; | |
2896 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2897 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2898 | break; | |
2899 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2900 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2901 | default: | |
2902 | ret = LTTNG_ERR_UNK; | |
2903 | goto end; | |
847a5916 JR |
2904 | } |
2905 | } | |
55c9e7ca | 2906 | node = id_target_node; |
847a5916 JR |
2907 | } |
2908 | ||
2909 | end: | |
159b042f | 2910 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2911 | return ret; |
2912 | } | |
2913 | ||
dcf266c0 JG |
2914 | static |
2915 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2916 | { | |
2917 | int ret; | |
3afa94ae | 2918 | struct lttng_domain domain {}; |
dcf266c0 | 2919 | struct lttng_handle *handle = NULL; |
4fc2b126 | 2920 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2921 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2922 | xmlNodePtr trackers_node = NULL; |
2923 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2924 | xmlNodePtr vpid_tracker_node = NULL; |
2925 | xmlNodePtr uid_tracker_node = NULL; | |
2926 | xmlNodePtr vuid_tracker_node = NULL; | |
2927 | xmlNodePtr gid_tracker_node = NULL; | |
2928 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2929 | xmlNodePtr node; |
2930 | ||
a0377dfe | 2931 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2932 | |
2933 | ret = init_domain(domain_node, &domain); | |
2934 | if (ret) { | |
2935 | goto end; | |
2936 | } | |
2937 | ||
2938 | handle = lttng_create_handle(session_name, &domain); | |
2939 | if (!handle) { | |
2940 | ret = -LTTNG_ERR_NOMEM; | |
2941 | goto end; | |
2942 | } | |
2943 | ||
2944 | /* get the channels node */ | |
2945 | for (node = xmlFirstElementChild(domain_node); node; | |
2946 | node = xmlNextElementSibling(node)) { | |
2947 | if (!strcmp((const char *) node->name, | |
2948 | config_element_channels)) { | |
2949 | channels_node = node; | |
2950 | break; | |
2951 | } | |
2952 | } | |
2953 | ||
2954 | if (!channels_node) { | |
2955 | goto end; | |
2956 | } | |
2957 | ||
2958 | /* create all channels */ | |
2959 | for (node = xmlFirstElementChild(channels_node); node; | |
2960 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2961 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2962 | xmlNodePtr contexts_node = NULL; |
2963 | xmlNodePtr events_node = NULL; | |
2964 | xmlNodePtr channel_attr_node; | |
2965 | ||
36d1687c JG |
2966 | /* |
2967 | * Channels of the "agent" types cannot be created directly. | |
2968 | * They are meant to be created implicitly through the | |
2969 | * activation of events in their domain. However, a user | |
2970 | * can override the default channel configuration attributes | |
2971 | * by creating the underlying UST channel _before_ enabling | |
2972 | * an agent domain event. | |
2973 | * | |
2974 | * Hence, the channel's type is substituted before the creation | |
2975 | * and restored by the time the events are created. | |
2976 | */ | |
2977 | switch (domain.type) { | |
2978 | case LTTNG_DOMAIN_JUL: | |
2979 | case LTTNG_DOMAIN_LOG4J: | |
2980 | case LTTNG_DOMAIN_PYTHON: | |
2981 | domain.type = LTTNG_DOMAIN_UST; | |
2982 | default: | |
2983 | break; | |
2984 | } | |
2985 | ||
4fc2b126 JR |
2986 | channel = lttng_channel_create(&domain); |
2987 | if (!channel) { | |
2988 | ret = -1; | |
2989 | goto end; | |
2990 | } | |
dcf266c0 JG |
2991 | |
2992 | for (channel_attr_node = xmlFirstElementChild(node); | |
2993 | channel_attr_node; channel_attr_node = | |
2994 | xmlNextElementSibling(channel_attr_node)) { | |
2995 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2996 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2997 | if (ret) { |
2998 | goto end; | |
2999 | } | |
3000 | } | |
3001 | ||
4fc2b126 | 3002 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3003 | if (ret < 0) { |
3004 | goto end; | |
3005 | } | |
3006 | ||
36d1687c JG |
3007 | /* Restore the original channel domain. */ |
3008 | domain.type = original_domain; | |
3009 | ||
4fc2b126 | 3010 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3011 | if (ret) { |
3012 | goto end; | |
3013 | } | |
3014 | ||
3015 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3016 | channel->name); |
dcf266c0 JG |
3017 | if (ret) { |
3018 | goto end; | |
3019 | } | |
4fc2b126 JR |
3020 | |
3021 | lttng_channel_destroy(channel); | |
dcf266c0 | 3022 | } |
4fc2b126 | 3023 | channel = NULL; |
847a5916 JR |
3024 | |
3025 | /* get the trackers node */ | |
3026 | for (node = xmlFirstElementChild(domain_node); node; | |
3027 | node = xmlNextElementSibling(node)) { | |
3028 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3029 | config_element_process_attr_trackers) || |
3030 | !strcmp((const char *) node->name, | |
3031 | config_element_trackers_legacy)) { | |
3032 | if (trackers_node) { | |
3033 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3034 | config_element_process_attr_trackers, | |
3035 | config_element_trackers_legacy); | |
3036 | ret = -1; | |
3037 | goto end; | |
3038 | } | |
847a5916 JR |
3039 | trackers_node = node; |
3040 | break; | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | if (!trackers_node) { | |
3045 | goto end; | |
3046 | } | |
3047 | ||
3048 | for (node = xmlFirstElementChild(trackers_node); node; | |
3049 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3050 | if (!strcmp((const char *) node->name, |
159b042f | 3051 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3052 | pid_tracker_node = node; |
55c9e7ca | 3053 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3054 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3055 | if (ret) { |
3056 | goto end; | |
3057 | } | |
3058 | } | |
3059 | if (!strcmp((const char *) node->name, | |
159b042f | 3060 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3061 | vpid_tracker_node = node; |
3062 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3063 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3064 | if (ret) { |
3065 | goto end; | |
3066 | } | |
3067 | } | |
3068 | if (!strcmp((const char *) node->name, | |
159b042f | 3069 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3070 | uid_tracker_node = node; |
3071 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3072 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3073 | if (ret) { |
3074 | goto end; | |
3075 | } | |
3076 | } | |
3077 | if (!strcmp((const char *) node->name, | |
159b042f | 3078 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3079 | vuid_tracker_node = node; |
3080 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3081 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3082 | if (ret) { |
3083 | goto end; | |
3084 | } | |
3085 | } | |
3086 | if (!strcmp((const char *) node->name, | |
159b042f | 3087 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3088 | gid_tracker_node = node; |
3089 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3090 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3091 | if (ret) { |
3092 | goto end; | |
3093 | } | |
3094 | } | |
3095 | if (!strcmp((const char *) node->name, | |
159b042f | 3096 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3097 | vgid_tracker_node = node; |
3098 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3099 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3100 | if (ret) { |
3101 | goto end; | |
3102 | } | |
3103 | } | |
f7af9a72 JG |
3104 | if (!strcmp((const char *) node->name, |
3105 | config_element_pid_tracker_legacy)) { | |
3106 | ret = process_legacy_pid_tracker_node(node, handle); | |
3107 | if (ret) { | |
3108 | goto end; | |
3109 | } | |
3110 | } | |
847a5916 JR |
3111 | } |
3112 | ||
dcf266c0 | 3113 | end: |
4fc2b126 | 3114 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3115 | lttng_destroy_handle(handle); |
3116 | return ret; | |
3117 | } | |
3118 | ||
66ea93b1 JG |
3119 | static |
3120 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3121 | { | |
3122 | int ret; | |
3123 | enum lttng_rotation_status status; | |
3124 | struct lttng_rotation_schedule *periodic = | |
3125 | lttng_rotation_schedule_periodic_create(); | |
3126 | ||
3127 | if (!periodic) { | |
3128 | ret = -LTTNG_ERR_NOMEM; | |
3129 | goto error; | |
3130 | } | |
3131 | ||
3132 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3133 | time_us); | |
3134 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3135 | ret = -LTTNG_ERR_INVALID; | |
3136 | goto error; | |
3137 | } | |
3138 | ||
3139 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3140 | switch (status) { | |
3141 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3142 | ret = 0; |
66ea93b1 JG |
3143 | break; |
3144 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3145 | case LTTNG_ROTATION_STATUS_INVALID: | |
3146 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3147 | break; | |
3148 | default: | |
3149 | ret = -LTTNG_ERR_UNK; | |
3150 | break; | |
3151 | } | |
3152 | error: | |
3153 | lttng_rotation_schedule_destroy(periodic); | |
3154 | return ret; | |
3155 | } | |
3156 | ||
3157 | static | |
3158 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3159 | { | |
3160 | int ret; | |
3161 | enum lttng_rotation_status status; | |
3162 | struct lttng_rotation_schedule *size = | |
3163 | lttng_rotation_schedule_size_threshold_create(); | |
3164 | ||
3165 | if (!size) { | |
3166 | ret = -LTTNG_ERR_NOMEM; | |
3167 | goto error; | |
3168 | } | |
3169 | ||
3170 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3171 | size_bytes); | |
3172 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3173 | ret = -LTTNG_ERR_INVALID; | |
3174 | goto error; | |
3175 | } | |
3176 | ||
3177 | status = lttng_session_add_rotation_schedule(name, size); | |
3178 | switch (status) { | |
3179 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3180 | ret = 0; |
66ea93b1 JG |
3181 | break; |
3182 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3183 | case LTTNG_ROTATION_STATUS_INVALID: | |
3184 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3185 | break; | |
3186 | default: | |
3187 | ret = -LTTNG_ERR_UNK; | |
3188 | break; | |
3189 | } | |
3190 | error: | |
3191 | lttng_rotation_schedule_destroy(size); | |
3192 | return ret; | |
3193 | } | |
3194 | ||
ce6176f2 JG |
3195 | static |
3196 | int process_session_rotation_schedules_node( | |
3197 | xmlNodePtr schedules_node, | |
3198 | uint64_t *rotation_timer_interval, | |
3199 | uint64_t *rotation_size) | |
3200 | { | |
3201 | int ret = 0; | |
3202 | xmlNodePtr child; | |
3203 | ||
3204 | for (child = xmlFirstElementChild(schedules_node); | |
3205 | child; | |
3206 | child = xmlNextElementSibling(child)) { | |
3207 | if (!strcmp((const char *) child->name, | |
3208 | config_element_rotation_schedule_periodic)) { | |
3209 | xmlChar *content; | |
3210 | xmlNodePtr time_us_node; | |
3211 | ||
3212 | /* periodic rotation schedule */ | |
3213 | time_us_node = xmlFirstElementChild(child); | |
3214 | if (!time_us_node || | |
3215 | strcmp((const char *) time_us_node->name, | |
3216 | config_element_rotation_schedule_periodic_time_us)) { | |
3217 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3218 | goto end; | |
3219 | } | |
3220 | ||
3221 | /* time_us child */ | |
3222 | content = xmlNodeGetContent(time_us_node); | |
3223 | if (!content) { | |
3224 | ret = -LTTNG_ERR_NOMEM; | |
3225 | goto end; | |
3226 | } | |
3227 | ret = parse_uint(content, rotation_timer_interval); | |
3228 | free(content); | |
3229 | if (ret) { | |
3230 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3231 | goto end; | |
3232 | } | |
3233 | } else if (!strcmp((const char *) child->name, | |
3234 | config_element_rotation_schedule_size_threshold)) { | |
3235 | xmlChar *content; | |
3236 | xmlNodePtr bytes_node; | |
3237 | ||
3238 | /* size_threshold rotation schedule */ | |
3239 | bytes_node = xmlFirstElementChild(child); | |
3240 | if (!bytes_node || | |
3241 | strcmp((const char *) bytes_node->name, | |
3242 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3243 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3244 | goto end; | |
3245 | } | |
3246 | ||
3247 | /* bytes child */ | |
3248 | content = xmlNodeGetContent(bytes_node); | |
3249 | if (!content) { | |
3250 | ret = -LTTNG_ERR_NOMEM; | |
3251 | goto end; | |
3252 | } | |
3253 | ret = parse_uint(content, rotation_size); | |
3254 | free(content); | |
3255 | if (ret) { | |
3256 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3257 | goto end; | |
3258 | } | |
3259 | } | |
3260 | } | |
3261 | ||
3262 | end: | |
3263 | return ret; | |
3264 | } | |
3265 | ||
dcf266c0 JG |
3266 | static |
3267 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3268 | int overwrite, |
3269 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3270 | { |
3271 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3272 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3273 | rotation_timer_interval = 0, |
3274 | rotation_size = 0; | |
d324faf7 | 3275 | xmlChar *name = NULL; |
9e7c9f56 | 3276 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3277 | xmlNodePtr domains_node = NULL; |
3278 | xmlNodePtr output_node = NULL; | |
3279 | xmlNodePtr node; | |
90936dcf | 3280 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3281 | struct lttng_domain *kernel_domain = NULL; |
3282 | struct lttng_domain *ust_domain = NULL; | |
3283 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3284 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3285 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3286 | |
3287 | for (node = xmlFirstElementChild(session_node); node; | |
3288 | node = xmlNextElementSibling(node)) { | |
3289 | if (!name && !strcmp((const char *) node->name, | |
3290 | config_element_name)) { | |
3291 | /* name */ | |
3292 | xmlChar *node_content = xmlNodeGetContent(node); | |
3293 | if (!node_content) { | |
3294 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3295 | goto error; |
dcf266c0 JG |
3296 | } |
3297 | ||
d324faf7 | 3298 | name = node_content; |
dcf266c0 JG |
3299 | } else if (!domains_node && !strcmp((const char *) node->name, |
3300 | config_element_domains)) { | |
3301 | /* domains */ | |
3302 | domains_node = node; | |
3303 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3304 | config_element_started)) { | |
3305 | /* started */ | |
3306 | xmlChar *node_content = xmlNodeGetContent(node); | |
3307 | if (!node_content) { | |
3308 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3309 | goto error; |
dcf266c0 JG |
3310 | } |
3311 | ||
3312 | ret = parse_bool(node_content, &started); | |
3313 | free(node_content); | |
3314 | if (ret) { | |
3315 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3316 | goto error; |
dcf266c0 JG |
3317 | } |
3318 | } else if (!output_node && !strcmp((const char *) node->name, | |
3319 | config_element_output)) { | |
3320 | /* output */ | |
3321 | output_node = node; | |
9e7c9f56 JR |
3322 | } else if (!shm_path && !strcmp((const char *) node->name, |
3323 | config_element_shared_memory_path)) { | |
3324 | /* shared memory path */ | |
3325 | xmlChar *node_content = xmlNodeGetContent(node); | |
3326 | if (!node_content) { | |
3327 | ret = -LTTNG_ERR_NOMEM; | |
3328 | goto error; | |
3329 | } | |
3330 | ||
3331 | shm_path = node_content; | |
dcf266c0 | 3332 | } else { |
259c2674 JD |
3333 | /* |
3334 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3335 | * rotation_timer_interval. |
3336 | */ | |
3337 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3338 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3339 | if (!strcmp((const char *) attributes_child->name, | |
3340 | config_element_snapshot_mode)) { | |
3341 | /* snapshot_mode */ | |
3342 | xmlChar *snapshot_mode_content = | |
3343 | xmlNodeGetContent(attributes_child); | |
3344 | if (!snapshot_mode_content) { | |
3345 | ret = -LTTNG_ERR_NOMEM; | |
3346 | goto error; | |
3347 | } | |
dcf266c0 | 3348 | |
90936dcf JD |
3349 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3350 | free(snapshot_mode_content); | |
3351 | if (ret) { | |
3352 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3353 | goto error; | |
3354 | } | |
3355 | } else if (!strcmp((const char *) attributes_child->name, | |
3356 | config_element_live_timer_interval)) { | |
3357 | /* live_timer_interval */ | |
3358 | xmlChar *timer_interval_content = | |
3359 | xmlNodeGetContent(attributes_child); | |
3360 | if (!timer_interval_content) { | |
3361 | ret = -LTTNG_ERR_NOMEM; | |
3362 | goto error; | |
3363 | } | |
dcf266c0 | 3364 | |
90936dcf JD |
3365 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3366 | free(timer_interval_content); | |
3367 | if (ret) { | |
3368 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3369 | goto error; | |
3370 | } | |
ce6176f2 JG |
3371 | } else if (!strcmp((const char *) attributes_child->name, |
3372 | config_element_rotation_schedules)) { | |
3373 | ret = process_session_rotation_schedules_node( | |
3374 | attributes_child, | |
3375 | &rotation_timer_interval, | |
3376 | &rotation_size); | |
90936dcf JD |
3377 | if (ret) { |
3378 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3379 | goto error; | |
3380 | } | |
259c2674 | 3381 | |
259c2674 JD |
3382 | } |
3383 | } | |
dcf266c0 JG |
3384 | } |
3385 | } | |
3386 | ||
3387 | if (!name) { | |
3388 | /* Mandatory attribute, as defined in the session XSD */ | |
3389 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3390 | goto error; |
dcf266c0 JG |
3391 | } |
3392 | ||
d324faf7 | 3393 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3394 | /* This is not the session we are looking for */ |
c2da8cde DG |
3395 | ret = -LTTNG_ERR_NO_SESSION; |
3396 | goto error; | |
dcf266c0 JG |
3397 | } |
3398 | ||
3399 | /* Init domains to create the session handles */ | |
3400 | for (node = xmlFirstElementChild(domains_node); node; | |
3401 | node = xmlNextElementSibling(node)) { | |
3402 | struct lttng_domain *domain; | |
3403 | ||
3afa94ae | 3404 | domain = (lttng_domain *) zmalloc(sizeof(*domain)); |
dcf266c0 JG |
3405 | if (!domain) { |
3406 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3407 | goto error; |
dcf266c0 JG |
3408 | } |
3409 | ||
3410 | ret = init_domain(node, domain); | |
3411 | if (ret) { | |
3412 | goto domain_init_error; | |
3413 | } | |
3414 | ||
3415 | switch (domain->type) { | |
3416 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3417 | if (kernel_domain) { |
3418 | /* Same domain seen twice, invalid! */ | |
3419 | goto domain_init_error; | |
3420 | } | |
dcf266c0 JG |
3421 | kernel_domain = domain; |
3422 | break; | |
3423 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3424 | if (ust_domain) { |
3425 | /* Same domain seen twice, invalid! */ | |
3426 | goto domain_init_error; | |
3427 | } | |
dcf266c0 JG |
3428 | ust_domain = domain; |
3429 | break; | |
3430 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3431 | if (jul_domain) { |
3432 | /* Same domain seen twice, invalid! */ | |
3433 | goto domain_init_error; | |
3434 | } | |
dcf266c0 JG |
3435 | jul_domain = domain; |
3436 | break; | |
5cdb6027 DG |
3437 | case LTTNG_DOMAIN_LOG4J: |
3438 | if (log4j_domain) { | |
3439 | /* Same domain seen twice, invalid! */ | |
3440 | goto domain_init_error; | |
3441 | } | |
3442 | log4j_domain = domain; | |
3443 | break; | |
0e115563 DG |
3444 | case LTTNG_DOMAIN_PYTHON: |
3445 | if (python_domain) { | |
3446 | /* Same domain seen twice, invalid! */ | |
3447 | goto domain_init_error; | |
3448 | } | |
3449 | python_domain = domain; | |
3450 | break; | |
dcf266c0 JG |
3451 | default: |
3452 | WARN("Invalid domain type"); | |
3453 | goto domain_init_error; | |
3454 | } | |
3455 | continue; | |
3456 | domain_init_error: | |
3457 | free(domain); | |
3458 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3459 | goto error; |
dcf266c0 JG |
3460 | } |
3461 | ||
2aaf5fc7 JR |
3462 | /* Apply overrides */ |
3463 | if (overrides) { | |
3464 | if (overrides->session_name) { | |
3465 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3466 | if (!name_override) { | |
3467 | ret = -LTTNG_ERR_NOMEM; | |
3468 | goto error; | |
3469 | } | |
3470 | ||
3471 | /* Overrides the session name to the provided name */ | |
3472 | xmlFree(name); | |
3473 | name = name_override; | |
3474 | } | |
3475 | } | |
3476 | ||
40b4155f | 3477 | if (overwrite) { |
dcf266c0 | 3478 | /* Destroy session if it exists */ |
d324faf7 | 3479 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3480 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3481 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3482 | goto error; |
dcf266c0 JG |
3483 | } |
3484 | } | |
3485 | ||
3486 | /* Create session type depending on output type */ | |
3487 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3488 | ret = create_snapshot_session((const char *) name, output_node, |
3489 | overrides); | |
dcf266c0 JG |
3490 | } else if (live_timer_interval && |
3491 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3492 | ret = create_session((const char *) name, |
1b08cbce | 3493 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3494 | } else { |
3495 | /* regular session */ | |
194dfca0 | 3496 | ret = create_session((const char *) name, |
1b08cbce | 3497 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3498 | } |
dcf266c0 | 3499 | if (ret) { |
c2da8cde | 3500 | goto error; |
dcf266c0 JG |
3501 | } |
3502 | ||
9e7c9f56 JR |
3503 | if (shm_path) { |
3504 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3505 | (const char *) shm_path); |
9e7c9f56 JR |
3506 | if (ret) { |
3507 | goto error; | |
3508 | } | |
3509 | } | |
3510 | ||
dcf266c0 JG |
3511 | for (node = xmlFirstElementChild(domains_node); node; |
3512 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3513 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3514 | if (ret) { |
3515 | goto end; | |
3516 | } | |
3517 | } | |
3518 | ||
66ea93b1 JG |
3519 | if (rotation_timer_interval) { |
3520 | ret = add_periodic_rotation((const char *) name, | |
3521 | rotation_timer_interval); | |
3522 | if (ret < 0) { | |
259c2674 JD |
3523 | goto error; |
3524 | } | |
66ea93b1 JG |
3525 | } |
3526 | if (rotation_size) { | |
3527 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3528 | rotation_size); |
66ea93b1 | 3529 | if (ret < 0) { |
259c2674 JD |
3530 | goto error; |
3531 | } | |
3532 | } | |
3533 | ||
dcf266c0 | 3534 | if (started) { |
d324faf7 | 3535 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3536 | if (ret) { |
3537 | goto end; | |
3538 | } | |
3539 | } | |
c2da8cde | 3540 | |
dcf266c0 | 3541 | end: |
b2579dc1 | 3542 | if (ret < 0) { |
d324faf7 JG |
3543 | ERR("Failed to load session %s: %s", (const char *) name, |
3544 | lttng_strerror(ret)); | |
3545 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3546 | } |
3547 | ||
c2da8cde | 3548 | error: |
dcf266c0 JG |
3549 | free(kernel_domain); |
3550 | free(ust_domain); | |
3551 | free(jul_domain); | |
5cdb6027 | 3552 | free(log4j_domain); |
135a3893 | 3553 | free(python_domain); |
d324faf7 | 3554 | xmlFree(name); |
9e7c9f56 | 3555 | xmlFree(shm_path); |
dcf266c0 JG |
3556 | return ret; |
3557 | } | |
3558 | ||
cf53c06d DG |
3559 | /* |
3560 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3561 | * Return -1 if the path is EPERM. | |
3562 | */ | |
3563 | static int validate_file_read_creds(const char *path) | |
3564 | { | |
3565 | int ret; | |
3566 | ||
a0377dfe | 3567 | LTTNG_ASSERT(path); |
cf53c06d DG |
3568 | |
3569 | /* Can we read the file. */ | |
3570 | ret = access(path, R_OK); | |
3571 | if (!ret) { | |
3572 | goto valid; | |
3573 | } | |
3574 | if (errno == EACCES) { | |
3575 | return -1; | |
3576 | } else { | |
3577 | /* Invalid. */ | |
3578 | return 0; | |
3579 | } | |
3580 | valid: | |
3581 | return 1; | |
3582 | } | |
3583 | ||
dcf266c0 JG |
3584 | static |
3585 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3586 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3587 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3588 | { |
3589 | int ret, session_found = !session_name; | |
3590 | xmlDocPtr doc = NULL; | |
3591 | xmlNodePtr sessions_node; | |
3592 | xmlNodePtr session_node; | |
dcf266c0 | 3593 | |
a0377dfe FD |
3594 | LTTNG_ASSERT(path); |
3595 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3596 | |
cf53c06d DG |
3597 | ret = validate_file_read_creds(path); |
3598 | if (ret != 1) { | |
3599 | if (ret == -1) { | |
3600 | ret = -LTTNG_ERR_EPERM; | |
3601 | } else { | |
3602 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3603 | } | |
dcf266c0 JG |
3604 | goto end; |
3605 | } | |
3606 | ||
3607 | doc = xmlParseFile(path); | |
3608 | if (!doc) { | |
3609 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3610 | goto end; | |
3611 | } | |
3612 | ||
3613 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3614 | if (ret) { | |
3615 | ERR("Session configuration file validation failed"); | |
3616 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3617 | goto end; | |
3618 | } | |
3619 | ||
3620 | sessions_node = xmlDocGetRootElement(doc); | |
3621 | if (!sessions_node) { | |
55c9e7ca | 3622 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3623 | goto end; |
3624 | } | |
3625 | ||
3626 | for (session_node = xmlFirstElementChild(sessions_node); | |
3627 | session_node; session_node = | |
3628 | xmlNextElementSibling(session_node)) { | |
3629 | ret = process_session_node(session_node, | |
1b08cbce | 3630 | session_name, overwrite, overrides); |
317ea246 JG |
3631 | if (!session_name && ret) { |
3632 | /* Loading error occurred. */ | |
3633 | goto end; | |
3634 | } else if (session_name) { | |
3635 | if (ret == 0) { | |
3636 | /* Target session found and loaded */ | |
3637 | session_found = 1; | |
3638 | break; | |
3639 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3640 | /* | |
3641 | * Ignore this error, we are looking for a | |
3642 | * specific session. | |
3643 | */ | |
3644 | ret = 0; | |
3645 | } else { | |
3646 | /* Loading error occurred. */ | |
3647 | goto end; | |
3648 | } | |
dcf266c0 JG |
3649 | } |
3650 | } | |
3651 | end: | |
3652 | xmlFreeDoc(doc); | |
3653 | if (!ret) { | |
a96bc65d | 3654 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3655 | } |
3656 | return ret; | |
3657 | } | |
3658 | ||
3659 | static | |
3660 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3661 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3662 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3663 | { |
3664 | int ret, session_found = !session_name; | |
dcf266c0 | 3665 | DIR *directory = NULL; |
cce35f91 JG |
3666 | struct lttng_dynamic_buffer file_path; |
3667 | size_t path_len; | |
dcf266c0 | 3668 | |
a0377dfe FD |
3669 | LTTNG_ASSERT(path); |
3670 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3671 | path_len = strlen(path); |
3672 | lttng_dynamic_buffer_init(&file_path); | |
3673 | if (path_len >= LTTNG_PATH_MAX) { | |
3674 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3675 | path, path_len, LTTNG_PATH_MAX); | |
3676 | ret = -LTTNG_ERR_INVALID; | |
3677 | goto end; | |
3678 | } | |
dcf266c0 | 3679 | |
4af16958 DG |
3680 | directory = opendir(path); |
3681 | if (!directory) { | |
11143783 DG |
3682 | switch (errno) { |
3683 | case ENOTDIR: | |
0f0a81b5 DG |
3684 | /* Try the file loading. */ |
3685 | break; | |
11143783 DG |
3686 | case ENOENT: |
3687 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3688 | goto end; | |
3689 | default: | |
0f0a81b5 DG |
3690 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3691 | goto end; | |
4af16958 | 3692 | } |
dcf266c0 | 3693 | } |
4af16958 | 3694 | if (directory) { |
cce35f91 | 3695 | size_t file_path_root_len; |
dcf266c0 | 3696 | |
cce35f91 JG |
3697 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3698 | LTTNG_PATH_MAX); | |
3699 | if (ret) { | |
3700 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3701 | goto end; |
3702 | } | |
3703 | ||
cce35f91 JG |
3704 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3705 | if (ret) { | |
dcf266c0 | 3706 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3707 | goto end; |
3708 | } | |
3709 | ||
cce35f91 JG |
3710 | if (file_path.data[file_path.size - 1] != '/') { |
3711 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3712 | if (ret) { | |
3713 | ret = -LTTNG_ERR_NOMEM; | |
3714 | goto end; | |
3715 | } | |
dcf266c0 | 3716 | } |
cce35f91 | 3717 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3718 | |
3719 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3720 | for (;;) { |
3721 | size_t file_name_len; | |
3722 | struct dirent *result; | |
3723 | ||
3724 | /* | |
3725 | * When the end of the directory stream is reached, NULL | |
3726 | * is returned and errno is kept unchanged. When an | |
3727 | * error occurs, NULL is returned and errno is set | |
3728 | * accordingly. To distinguish between the two, set | |
3729 | * errno to zero before calling readdir(). | |
3730 | * | |
3731 | * On success, readdir() returns a pointer to a dirent | |
3732 | * structure. This structure may be statically | |
3733 | * allocated, do not attempt to free(3) it. | |
3734 | */ | |
3735 | errno = 0; | |
3736 | result = readdir(directory); | |
3737 | ||
ff86d8d0 | 3738 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3739 | if (!result) { |
3740 | if (errno) { | |
3741 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3742 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3743 | goto end; | |
3744 | } | |
3745 | break; | |
3746 | } | |
3747 | ||
3748 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3749 | |
3750 | if (file_name_len <= | |
3751 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3752 | continue; | |
3753 | } | |
3754 | ||
cce35f91 JG |
3755 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3756 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3757 | result->d_name, | |
3758 | /* +1 to account for NULL terminator. */ | |
3759 | file_path.size + file_name_len + 1, | |
3760 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3761 | continue; |
3762 | } | |
3763 | ||
cce35f91 | 3764 | /* Does the file end with .lttng? */ |
dcf266c0 | 3765 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3766 | result->d_name + file_name_len - sizeof( |
3767 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3768 | continue; |
3769 | } | |
3770 | ||
cce35f91 JG |
3771 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3772 | file_name_len + 1); | |
3773 | if (ret) { | |
3774 | ret = -LTTNG_ERR_NOMEM; | |
3775 | goto end; | |
3776 | } | |
dcf266c0 | 3777 | |
cce35f91 | 3778 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3779 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3780 | if (session_name && |
3781 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3782 | session_found = 1; |
3783 | break; | |
3784 | } | |
55c9e7ca JR |
3785 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3786 | goto end; | |
3787 | } | |
cce35f91 JG |
3788 | /* |
3789 | * Reset the buffer's size to the location of the | |
3790 | * path's trailing '/'. | |
3791 | */ | |
3792 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3793 | file_path_root_len); | |
3794 | if (ret) { | |
3795 | ret = -LTTNG_ERR_UNK; | |
3796 | goto end; | |
3797 | } | |
dcf266c0 | 3798 | } |
dcf266c0 JG |
3799 | } else { |
3800 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3801 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3802 | if (ret) { |
3803 | goto end; | |
dcf266c0 | 3804 | } |
55c9e7ca | 3805 | session_found = 1; |
dcf266c0 JG |
3806 | } |
3807 | ||
55c9e7ca | 3808 | ret = 0; |
dcf266c0 JG |
3809 | end: |
3810 | if (directory) { | |
3811 | if (closedir(directory)) { | |
3812 | PERROR("closedir"); | |
3813 | } | |
3814 | } | |
55c9e7ca JR |
3815 | if (!ret && !session_found) { |
3816 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3817 | } |
cce35f91 | 3818 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3819 | return ret; |
3820 | } | |
3821 | ||
ab38c13f DG |
3822 | /* |
3823 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3824 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3825 | */ |
3826 | static int validate_path_creds(const char *path) | |
3827 | { | |
3828 | int ret, uid = getuid(); | |
3829 | struct stat buf; | |
3830 | ||
a0377dfe | 3831 | LTTNG_ASSERT(path); |
ab38c13f | 3832 | |
cf53c06d | 3833 | if (uid == 0) { |
ab38c13f DG |
3834 | goto valid; |
3835 | } | |
3836 | ||
3837 | ret = stat(path, &buf); | |
3838 | if (ret < 0) { | |
3839 | if (errno != ENOENT) { | |
3840 | PERROR("stat"); | |
3841 | } | |
ab38c13f DG |
3842 | goto valid; |
3843 | } | |
3844 | ||
3845 | if (buf.st_uid != uid) { | |
3846 | goto invalid; | |
3847 | } | |
3848 | ||
3849 | valid: | |
ab38c13f | 3850 | return 1; |
cf53c06d DG |
3851 | invalid: |
3852 | return 0; | |
ab38c13f DG |
3853 | } |
3854 | ||
dcf266c0 | 3855 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
3856 | int overwrite, unsigned int autoload, |
3857 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3858 | { |
3859 | int ret; | |
6c66fa0f | 3860 | bool session_loaded = false; |
cf53c06d | 3861 | const char *path_ptr = NULL; |
1c9a0b0e | 3862 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3863 | |
3864 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3865 | if (ret) { | |
3866 | goto end; | |
3867 | } | |
3868 | ||
3869 | if (!path) { | |
4f00620d | 3870 | const char *home_path; |
ab38c13f DG |
3871 | const char *sys_path; |
3872 | ||
dcf266c0 | 3873 | /* Try home path */ |
ab38c13f | 3874 | home_path = utils_get_home_dir(); |
dcf266c0 | 3875 | if (home_path) { |
db8196db | 3876 | char path_buf[PATH_MAX]; |
dcf266c0 | 3877 | |
d4fcf703 DG |
3878 | /* |
3879 | * Try user session configuration path. Ignore error here so we can | |
3880 | * continue loading the system wide sessions. | |
3881 | */ | |
ab38c13f | 3882 | if (autoload) { |
db8196db SM |
3883 | ret = snprintf(path_buf, sizeof(path_buf), |
3884 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3885 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3886 | home_path); | |
cf53c06d DG |
3887 | if (ret < 0) { |
3888 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3889 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3890 | goto end; |
3891 | } | |
3892 | ||
3893 | /* | |
3894 | * Credentials are only validated for the autoload in order to | |
3895 | * avoid any user session daemon to try to load kernel sessions | |
3896 | * automatically and failing all the times. | |
3897 | */ | |
db8196db | 3898 | ret = validate_path_creds(path_buf); |
cf53c06d | 3899 | if (ret) { |
db8196db | 3900 | path_ptr = path_buf; |
cf53c06d | 3901 | } |
ab38c13f | 3902 | } else { |
db8196db SM |
3903 | ret = snprintf(path_buf, sizeof(path_buf), |
3904 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3905 | home_path); | |
cf53c06d DG |
3906 | if (ret < 0) { |
3907 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3908 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3909 | goto end; |
3910 | } | |
db8196db | 3911 | path_ptr = path_buf; |
ab38c13f | 3912 | } |
cf53c06d DG |
3913 | if (path_ptr) { |
3914 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3915 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3916 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3917 | goto end; | |
3918 | } | |
3919 | /* | |
3920 | * Continue even if the session was found since we have to try | |
3921 | * the system wide sessions. | |
3922 | */ | |
6c66fa0f | 3923 | session_loaded = true; |
ab38c13f | 3924 | } |
d4fcf703 | 3925 | } |
ab38c13f | 3926 | |
cf53c06d DG |
3927 | /* Reset path pointer for the system wide dir. */ |
3928 | path_ptr = NULL; | |
3929 | ||
d4fcf703 DG |
3930 | /* Try system wide configuration directory. */ |
3931 | if (autoload) { | |
3932 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3933 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3934 | ret = validate_path_creds(sys_path); |
3935 | if (ret) { | |
3936 | path_ptr = sys_path; | |
3937 | } | |
d4fcf703 | 3938 | } else { |
cf53c06d DG |
3939 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3940 | path_ptr = sys_path; | |
d4fcf703 DG |
3941 | } |
3942 | ||
cf53c06d DG |
3943 | if (path_ptr) { |
3944 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3945 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3946 | if (!ret) { |
3947 | session_loaded = true; | |
3948 | } | |
55c9e7ca JR |
3949 | } else { |
3950 | ret = 0; | |
dcf266c0 JG |
3951 | } |
3952 | } else { | |
3953 | ret = access(path, F_OK); | |
3954 | if (ret < 0) { | |
3955 | PERROR("access"); | |
3956 | switch (errno) { | |
3957 | case ENOENT: | |
3958 | ret = -LTTNG_ERR_INVALID; | |
3959 | WARN("Session configuration path does not exist."); | |
3960 | break; | |
3961 | case EACCES: | |
3962 | ret = -LTTNG_ERR_EPERM; | |
3963 | break; | |
3964 | default: | |
3965 | ret = -LTTNG_ERR_UNK; | |
3966 | break; | |
3967 | } | |
3968 | goto end; | |
3969 | } | |
3970 | ||
3971 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3972 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3973 | } |
3974 | end: | |
3975 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3976 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3977 | /* | |
3978 | * Don't report an error if no sessions are found when called | |
3979 | * without a session_name or a search path. | |
3980 | */ | |
3981 | ret = 0; | |
3982 | } | |
6c66fa0f JG |
3983 | |
3984 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3985 | /* A matching session was found in one of the search paths. */ | |
3986 | ret = 0; | |
3987 | } | |
dcf266c0 JG |
3988 | return ret; |
3989 | } | |
56766c75 JG |
3990 | |
3991 | static | |
3992 | void __attribute__((destructor)) session_config_exit(void) | |
3993 | { | |
3994 | xmlCleanupParser(); | |
3995 | } |