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 |
28ab034a JG |
10 | #include "config-internal.hpp" |
11 | #include "session-config.hpp" | |
1501a7f3 | 12 | |
28ab034a | 13 | #include <common/compat/getenv.hpp> |
c9e313bc | 14 | #include <common/defaults.hpp> |
28ab034a | 15 | #include <common/dynamic-buffer.hpp> |
c9e313bc SM |
16 | #include <common/error.hpp> |
17 | #include <common/macros.hpp> | |
18 | #include <common/utils.hpp> | |
28ab034a | 19 | |
fb198a11 | 20 | #include <lttng/lttng-error.h> |
dcf266c0 | 21 | #include <lttng/lttng.h> |
259c2674 | 22 | #include <lttng/rotation.h> |
28ab034a | 23 | #include <lttng/snapshot.h> |
c1e83fb4 | 24 | #include <lttng/userspace-probe.h> |
1501a7f3 | 25 | |
28ab034a JG |
26 | #include <ctype.h> |
27 | #include <dirent.h> | |
28 | #include <inttypes.h> | |
29 | #include <libxml/parser.h> | |
30 | #include <libxml/tree.h> | |
31 | #include <libxml/valid.h> | |
32 | #include <libxml/xmlschemas.h> | |
33 | #include <stdbool.h> | |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <string.h> | |
37 | #include <sys/stat.h> | |
38 | #include <sys/types.h> | |
39 | #include <unistd.h> | |
1501a7f3 | 40 | |
c1e83fb4 FD |
41 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
42 | ||
f1494934 | 43 | namespace { |
dcf266c0 JG |
44 | struct session_config_validation_ctx { |
45 | xmlSchemaParserCtxtPtr parser_ctx; | |
46 | xmlSchemaPtr schema; | |
47 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
48 | }; | |
f1494934 | 49 | } /* namespace */ |
dcf266c0 | 50 | |
28ab034a | 51 | const char *const config_element_all = "all"; |
3afa94ae | 52 | LTTNG_EXPORT const char *config_xml_encoding = "UTF-8"; |
28ab034a JG |
53 | LTTNG_EXPORT size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest |
54 | character */ | |
3afa94ae SM |
55 | LTTNG_EXPORT const char *config_xml_indent_string = "\t"; |
56 | LTTNG_EXPORT const char *config_xml_true = "true"; | |
57 | LTTNG_EXPORT const char *config_xml_false = "false"; | |
1501a7f3 | 58 | |
28ab034a JG |
59 | const char *const config_element_channel = "channel"; |
60 | const char *const config_element_channels = "channels"; | |
61 | const char *const config_element_domain = "domain"; | |
62 | const char *const config_element_domains = "domains"; | |
63 | const char *const config_element_event = "event"; | |
64 | const char *const config_element_events = "events"; | |
65 | const char *const config_element_context = "context"; | |
66 | const char *const config_element_contexts = "contexts"; | |
67 | const char *const config_element_attributes = "attributes"; | |
68 | const char *const config_element_exclusion = "exclusion"; | |
69 | const char *const config_element_exclusions = "exclusions"; | |
70 | const char *const config_element_function_attributes = "function_attributes"; | |
71 | const char *const config_element_probe_attributes = "probe_attributes"; | |
72 | const char *const config_element_symbol_name = "symbol_name"; | |
73 | const char *const config_element_address = "address"; | |
74 | const char *const config_element_offset = "offset"; | |
75 | ||
76 | const char *const config_element_userspace_probe_lookup = "lookup_method"; | |
77 | const char *const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
78 | const char *const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
79 | const char *const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
80 | const char *const config_element_userspace_probe_location_binary_path = "binary_path"; | |
81 | const char *const config_element_userspace_probe_function_attributes = | |
82 | "userspace_probe_function_attributes"; | |
83 | const char *const config_element_userspace_probe_function_location_function_name = "function_name"; | |
84 | const char *const config_element_userspace_probe_tracepoint_attributes = | |
85 | "userspace_probe_tracepoint_attributes"; | |
86 | const char *const config_element_userspace_probe_tracepoint_location_provider_name = | |
87 | "provider_name"; | |
88 | const char *const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
89 | ||
90 | const char *const config_element_name = "name"; | |
91 | const char *const config_element_enabled = "enabled"; | |
92 | const char *const config_element_overwrite_mode = "overwrite_mode"; | |
93 | const char *const config_element_subbuf_size = "subbuffer_size"; | |
94 | const char *const config_element_num_subbuf = "subbuffer_count"; | |
95 | const char *const config_element_switch_timer_interval = "switch_timer_interval"; | |
96 | const char *const config_element_read_timer_interval = "read_timer_interval"; | |
97 | const char *const config_element_monitor_timer_interval = "monitor_timer_interval"; | |
98 | const char *const config_element_blocking_timeout = "blocking_timeout"; | |
99 | const char *const config_element_output = "output"; | |
100 | const char *const config_element_output_type = "output_type"; | |
101 | const char *const config_element_tracefile_size = "tracefile_size"; | |
102 | const char *const config_element_tracefile_count = "tracefile_count"; | |
103 | const char *const config_element_live_timer_interval = "live_timer_interval"; | |
104 | const char *const config_element_discarded_events = "discarded_events"; | |
105 | const char *const config_element_lost_packets = "lost_packets"; | |
106 | const char *const config_element_type = "type"; | |
107 | const char *const config_element_buffer_type = "buffer_type"; | |
108 | const char *const config_element_session = "session"; | |
109 | const char *const config_element_sessions = "sessions"; | |
110 | const char *const config_element_context_perf = "perf"; | |
111 | const char *const config_element_context_app = "app"; | |
112 | const char *const config_element_context_app_provider_name = "provider_name"; | |
113 | const char *const config_element_context_app_ctx_name = "ctx_name"; | |
114 | const char *const config_element_config = "config"; | |
115 | const char *const config_element_started = "started"; | |
116 | const char *const config_element_snapshot_mode = "snapshot_mode"; | |
117 | const char *const config_element_loglevel = "loglevel"; | |
118 | const char *const config_element_loglevel_type = "loglevel_type"; | |
119 | const char *const config_element_filter = "filter"; | |
120 | const char *const config_element_filter_expression = "filter_expression"; | |
121 | const char *const config_element_snapshot_outputs = "snapshot_outputs"; | |
122 | const char *const config_element_consumer_output = "consumer_output"; | |
123 | const char *const config_element_destination = "destination"; | |
124 | const char *const config_element_path = "path"; | |
125 | const char *const config_element_net_output = "net_output"; | |
126 | const char *const config_element_control_uri = "control_uri"; | |
127 | const char *const config_element_data_uri = "data_uri"; | |
128 | const char *const config_element_max_size = "max_size"; | |
129 | const char *const config_element_pid = "pid"; | |
130 | const char *const config_element_pids = "pids"; | |
131 | const char *const config_element_shared_memory_path = "shared_memory_path"; | |
132 | ||
133 | const char *const config_element_process_attr_id = "id"; | |
134 | const char *const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
135 | const char *const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
136 | const char *const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
137 | const char *const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
138 | const char *const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
139 | const char *const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
140 | const char *const config_element_process_attr_trackers = "process_attr_trackers"; | |
141 | const char *const config_element_process_attr_values = "process_attr_values"; | |
142 | const char *const config_element_process_attr_value_type = "process_attr_value_type"; | |
143 | const char *const config_element_process_attr_pid_value = "pid"; | |
144 | const char *const config_element_process_attr_vpid_value = "vpid"; | |
145 | const char *const config_element_process_attr_uid_value = "uid"; | |
146 | const char *const config_element_process_attr_vuid_value = "vuid"; | |
147 | const char *const config_element_process_attr_gid_value = "gid"; | |
148 | const char *const config_element_process_attr_vgid_value = "vgid"; | |
149 | const char *const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 150 | |
f7af9a72 | 151 | /* Used for support of legacy tracker serialization (< 2.12). */ |
28ab034a JG |
152 | const char *const config_element_trackers_legacy = "trackers"; |
153 | const char *const config_element_pid_tracker_legacy = "pid_tracker"; | |
154 | const char *const config_element_tracker_targets_legacy = "targets"; | |
155 | const char *const config_element_tracker_pid_legacy = "pid"; | |
156 | ||
157 | const char *const config_element_rotation_schedules = "rotation_schedules"; | |
158 | const char *const config_element_rotation_schedule_periodic = "periodic"; | |
159 | const char *const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
160 | const char *const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
161 | const char *const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
162 | ||
163 | const char *const config_domain_type_kernel = "KERNEL"; | |
164 | const char *const config_domain_type_ust = "UST"; | |
165 | const char *const config_domain_type_jul = "JUL"; | |
166 | const char *const config_domain_type_log4j = "LOG4J"; | |
47abf22b | 167 | const char *const config_domain_type_log4j2 = "LOG4J2"; |
28ab034a JG |
168 | const char *const config_domain_type_python = "PYTHON"; |
169 | ||
170 | const char *const config_buffer_type_per_pid = "PER_PID"; | |
171 | const char *const config_buffer_type_per_uid = "PER_UID"; | |
172 | const char *const config_buffer_type_global = "GLOBAL"; | |
173 | ||
174 | const char *const config_overwrite_mode_discard = "DISCARD"; | |
175 | const char *const config_overwrite_mode_overwrite = "OVERWRITE"; | |
176 | ||
177 | const char *const config_output_type_splice = "SPLICE"; | |
178 | const char *const config_output_type_mmap = "MMAP"; | |
179 | ||
180 | const char *const config_loglevel_type_all = "ALL"; | |
181 | const char *const config_loglevel_type_range = "RANGE"; | |
182 | const char *const config_loglevel_type_single = "SINGLE"; | |
183 | ||
184 | const char *const config_event_type_all = "ALL"; | |
185 | const char *const config_event_type_tracepoint = "TRACEPOINT"; | |
186 | const char *const config_event_type_probe = "PROBE"; | |
187 | const char *const config_event_type_userspace_probe = "USERSPACE_PROBE"; | |
188 | const char *const config_event_type_function = "FUNCTION"; | |
189 | const char *const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
190 | const char *const config_event_type_noop = "NOOP"; | |
191 | const char *const config_event_type_syscall = "SYSCALL"; | |
192 | const char *const config_event_type_kprobe = "KPROBE"; | |
193 | const char *const config_event_type_kretprobe = "KRETPROBE"; | |
194 | ||
195 | const char *const config_event_context_pid = "PID"; | |
196 | const char *const config_event_context_procname = "PROCNAME"; | |
197 | const char *const config_event_context_prio = "PRIO"; | |
198 | const char *const config_event_context_nice = "NICE"; | |
199 | const char *const config_event_context_vpid = "VPID"; | |
200 | const char *const config_event_context_tid = "TID"; | |
201 | const char *const config_event_context_vtid = "VTID"; | |
202 | const char *const config_event_context_ppid = "PPID"; | |
203 | const char *const config_event_context_vppid = "VPPID"; | |
204 | const char *const config_event_context_pthread_id = "PTHREAD_ID"; | |
205 | const char *const config_event_context_hostname = "HOSTNAME"; | |
206 | const char *const config_event_context_ip = "IP"; | |
207 | const char *const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; | |
208 | const char *const config_event_context_app = "APP"; | |
209 | const char *const config_event_context_interruptible = "INTERRUPTIBLE"; | |
210 | const char *const config_event_context_preemptible = "PREEMPTIBLE"; | |
211 | const char *const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
212 | const char *const config_event_context_migratable = "MIGRATABLE"; | |
213 | const char *const config_event_context_callstack_user = "CALLSTACK_USER"; | |
214 | const char *const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
215 | const char *const config_event_context_cgroup_ns = "CGROUP_NS"; | |
216 | const char *const config_event_context_ipc_ns = "IPC_NS"; | |
217 | const char *const config_event_context_mnt_ns = "MNT_NS"; | |
218 | const char *const config_event_context_net_ns = "NET_NS"; | |
219 | const char *const config_event_context_pid_ns = "PID_NS"; | |
220 | const char *const config_event_context_time_ns = "TIME_NS"; | |
221 | const char *const config_event_context_user_ns = "USER_NS"; | |
222 | const char *const config_event_context_uts_ns = "UTS_NS"; | |
223 | const char *const config_event_context_uid = "UID"; | |
224 | const char *const config_event_context_euid = "EUID"; | |
225 | const char *const config_event_context_suid = "SUID"; | |
226 | const char *const config_event_context_gid = "GID"; | |
227 | const char *const config_event_context_egid = "EGID"; | |
228 | const char *const config_event_context_sgid = "SGID"; | |
229 | const char *const config_event_context_vuid = "VUID"; | |
230 | const char *const config_event_context_veuid = "VEUID"; | |
231 | const char *const config_event_context_vsuid = "VSUID"; | |
232 | const char *const config_event_context_vgid = "VGID"; | |
233 | const char *const config_event_context_vegid = "VEGID"; | |
234 | const char *const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 235 | |
fbd987c9 | 236 | /* Deprecated symbols */ |
3afa94ae | 237 | LTTNG_EXPORT const char *config_element_perf; |
fbd987c9 | 238 | |
d7b645e2 JR |
239 | enum process_event_node_phase { |
240 | CREATION = 0, | |
241 | ENABLE = 1, | |
242 | }; | |
243 | ||
f1494934 | 244 | namespace { |
dcf266c0 JG |
245 | struct consumer_output { |
246 | int enabled; | |
247 | char *path; | |
248 | char *control_uri; | |
249 | char *data_uri; | |
250 | }; | |
f1494934 | 251 | } /* namespace */ |
dcf266c0 | 252 | |
36f2332b JG |
253 | /* |
254 | * Returns a xmlChar string which must be released using xmlFree(). | |
255 | */ | |
256 | static xmlChar *encode_string(const char *in_str) | |
257 | { | |
cd9adb8b | 258 | xmlChar *out_str = nullptr; |
36f2332b JG |
259 | xmlCharEncodingHandlerPtr handler; |
260 | int out_len, ret, in_len; | |
261 | ||
a0377dfe | 262 | LTTNG_ASSERT(in_str); |
36f2332b JG |
263 | |
264 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
265 | if (!handler) { | |
266 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
267 | goto end; | |
268 | } | |
269 | ||
270 | in_len = strlen(in_str); | |
271 | /* | |
f76d886f JG |
272 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
273 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 274 | */ |
f76d886f | 275 | out_len = (in_len * 4) + 1; |
3afa94ae | 276 | out_str = (xmlChar *) xmlMalloc(out_len); |
36f2332b JG |
277 | if (!out_str) { |
278 | goto end; | |
279 | } | |
280 | ||
281 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
282 | if (ret < 0) { | |
283 | xmlFree(out_str); | |
cd9adb8b | 284 | out_str = nullptr; |
36f2332b JG |
285 | goto end; |
286 | } | |
287 | ||
288 | /* out_len is now the size of out_str */ | |
289 | out_str[out_len] = '\0'; | |
290 | end: | |
291 | return out_str; | |
292 | } | |
293 | ||
705bb62f | 294 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
295 | { |
296 | int ret; | |
297 | struct config_writer *writer; | |
298 | xmlOutputBufferPtr buffer; | |
299 | ||
64803277 | 300 | writer = zmalloc<config_writer>(); |
36f2332b JG |
301 | if (!writer) { |
302 | PERROR("zmalloc config_writer_create"); | |
303 | goto end; | |
304 | } | |
305 | ||
cd9adb8b | 306 | buffer = xmlOutputBufferCreateFd(fd_output, nullptr); |
36f2332b JG |
307 | if (!buffer) { |
308 | goto error_destroy; | |
309 | } | |
310 | ||
311 | writer->writer = xmlNewTextWriter(buffer); | |
cd9adb8b | 312 | ret = xmlTextWriterStartDocument(writer->writer, nullptr, config_xml_encoding, nullptr); |
36f2332b JG |
313 | if (ret < 0) { |
314 | goto error_destroy; | |
315 | } | |
316 | ||
28ab034a | 317 | ret = xmlTextWriterSetIndentString(writer->writer, BAD_CAST config_xml_indent_string); |
705bb62f | 318 | if (ret) { |
36f2332b JG |
319 | goto error_destroy; |
320 | } | |
321 | ||
705bb62f JRJ |
322 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
323 | if (ret) { | |
36f2332b JG |
324 | goto error_destroy; |
325 | } | |
326 | ||
327 | end: | |
328 | return writer; | |
329 | error_destroy: | |
330 | config_writer_destroy(writer); | |
cd9adb8b | 331 | return nullptr; |
36f2332b JG |
332 | } |
333 | ||
36f2332b JG |
334 | int config_writer_destroy(struct config_writer *writer) |
335 | { | |
336 | int ret = 0; | |
337 | ||
338 | if (!writer) { | |
339 | ret = -EINVAL; | |
340 | goto end; | |
341 | } | |
342 | ||
343 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
344 | WARN("Could not close XML document"); | |
345 | ret = -EIO; | |
346 | } | |
347 | ||
348 | if (writer->writer) { | |
349 | xmlFreeTextWriter(writer->writer); | |
350 | } | |
351 | ||
352 | free(writer); | |
353 | end: | |
354 | return ret; | |
355 | } | |
356 | ||
28ab034a | 357 | int config_writer_open_element(struct config_writer *writer, const char *element_name) |
36f2332b JG |
358 | { |
359 | int ret; | |
360 | xmlChar *encoded_element_name; | |
361 | ||
362 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
363 | ret = -1; | |
364 | goto end; | |
365 | } | |
366 | ||
367 | encoded_element_name = encode_string(element_name); | |
368 | if (!encoded_element_name) { | |
369 | ret = -1; | |
370 | goto end; | |
371 | } | |
372 | ||
373 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
374 | xmlFree(encoded_element_name); | |
375 | end: | |
28676a1d | 376 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
377 | } |
378 | ||
28ab034a | 379 | int config_writer_write_attribute(struct config_writer *writer, const char *name, const char *value) |
e10b6a1c JG |
380 | { |
381 | int ret; | |
cd9adb8b JG |
382 | xmlChar *encoded_name = nullptr; |
383 | xmlChar *encoded_value = nullptr; | |
e10b6a1c JG |
384 | |
385 | if (!writer || !writer->writer || !name || !name[0]) { | |
386 | ret = -1; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | encoded_name = encode_string(name); | |
391 | if (!encoded_name) { | |
392 | ret = -1; | |
393 | goto end; | |
394 | } | |
395 | ||
396 | encoded_value = encode_string(value); | |
397 | if (!encoded_value) { | |
398 | ret = -1; | |
399 | goto end; | |
400 | } | |
401 | ||
28ab034a | 402 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, encoded_value); |
e10b6a1c JG |
403 | end: |
404 | xmlFree(encoded_name); | |
405 | xmlFree(encoded_value); | |
406 | return ret >= 0 ? 0 : ret; | |
407 | } | |
408 | ||
36f2332b JG |
409 | int config_writer_close_element(struct config_writer *writer) |
410 | { | |
411 | int ret; | |
412 | ||
413 | if (!writer || !writer->writer) { | |
414 | ret = -1; | |
415 | goto end; | |
416 | } | |
417 | ||
418 | ret = xmlTextWriterEndElement(writer->writer); | |
419 | end: | |
28676a1d | 420 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
421 | } |
422 | ||
36f2332b | 423 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
28ab034a JG |
424 | const char *element_name, |
425 | uint64_t value) | |
36f2332b JG |
426 | { |
427 | int ret; | |
428 | xmlChar *encoded_element_name; | |
429 | ||
430 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
431 | ret = -1; | |
432 | goto end; | |
433 | } | |
434 | ||
435 | encoded_element_name = encode_string(element_name); | |
436 | if (!encoded_element_name) { | |
437 | ret = -1; | |
438 | goto end; | |
439 | } | |
440 | ||
28ab034a JG |
441 | ret = xmlTextWriterWriteFormatElement( |
442 | writer->writer, encoded_element_name, "%" PRIu64, value); | |
36f2332b JG |
443 | xmlFree(encoded_element_name); |
444 | end: | |
28676a1d | 445 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
446 | } |
447 | ||
36f2332b | 448 | int config_writer_write_element_signed_int(struct config_writer *writer, |
28ab034a JG |
449 | const char *element_name, |
450 | int64_t value) | |
36f2332b JG |
451 | { |
452 | int ret; | |
453 | xmlChar *encoded_element_name; | |
454 | ||
455 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
456 | ret = -1; | |
457 | goto end; | |
458 | } | |
459 | ||
460 | encoded_element_name = encode_string(element_name); | |
461 | if (!encoded_element_name) { | |
462 | ret = -1; | |
463 | goto end; | |
464 | } | |
465 | ||
28ab034a JG |
466 | ret = xmlTextWriterWriteFormatElement( |
467 | writer->writer, encoded_element_name, "%" PRIi64, value); | |
36f2332b JG |
468 | xmlFree(encoded_element_name); |
469 | end: | |
28676a1d | 470 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
471 | } |
472 | ||
36f2332b | 473 | int config_writer_write_element_bool(struct config_writer *writer, |
28ab034a JG |
474 | const char *element_name, |
475 | int value) | |
36f2332b | 476 | { |
28ab034a JG |
477 | return config_writer_write_element_string( |
478 | writer, element_name, value ? config_xml_true : config_xml_false); | |
36f2332b JG |
479 | } |
480 | ||
2b166400 | 481 | int config_writer_write_element_double(struct config_writer *writer, |
28ab034a JG |
482 | const char *element_name, |
483 | double value) | |
2b166400 JR |
484 | { |
485 | int ret; | |
486 | xmlChar *encoded_element_name; | |
487 | ||
488 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
489 | ret = -1; | |
490 | goto end; | |
491 | } | |
492 | ||
493 | encoded_element_name = encode_string(element_name); | |
494 | if (!encoded_element_name) { | |
495 | ret = -1; | |
496 | goto end; | |
497 | } | |
498 | ||
28ab034a | 499 | ret = xmlTextWriterWriteFormatElement(writer->writer, encoded_element_name, "%f", value); |
2b166400 JR |
500 | xmlFree(encoded_element_name); |
501 | end: | |
502 | return ret >= 0 ? 0 : ret; | |
503 | } | |
504 | ||
36f2332b | 505 | int config_writer_write_element_string(struct config_writer *writer, |
28ab034a JG |
506 | const char *element_name, |
507 | const char *value) | |
36f2332b JG |
508 | { |
509 | int ret; | |
cd9adb8b JG |
510 | xmlChar *encoded_element_name = nullptr; |
511 | xmlChar *encoded_value = nullptr; | |
36f2332b | 512 | |
28ab034a | 513 | if (!writer || !writer->writer || !element_name || !element_name[0] || !value) { |
36f2332b JG |
514 | ret = -1; |
515 | goto end; | |
516 | } | |
517 | ||
518 | encoded_element_name = encode_string(element_name); | |
519 | if (!encoded_element_name) { | |
520 | ret = -1; | |
521 | goto end; | |
522 | } | |
523 | ||
524 | encoded_value = encode_string(value); | |
525 | if (!encoded_value) { | |
526 | ret = -1; | |
527 | goto end; | |
528 | } | |
529 | ||
28ab034a | 530 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, encoded_value); |
36f2332b JG |
531 | end: |
532 | xmlFree(encoded_element_name); | |
533 | xmlFree(encoded_value); | |
28676a1d | 534 | return ret >= 0 ? 0 : ret; |
36f2332b | 535 | } |
dcf266c0 | 536 | |
28ab034a JG |
537 | static ATTR_FORMAT_PRINTF(2, 3) void xml_error_handler(void *ctx __attribute__((unused)), |
538 | const char *format, | |
539 | ...) | |
dcf266c0 JG |
540 | { |
541 | char *errMsg; | |
542 | va_list args; | |
543 | int ret; | |
544 | ||
545 | va_start(args, format); | |
546 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 547 | va_end(args); |
dcf266c0 JG |
548 | if (ret == -1) { |
549 | ERR("String allocation failed in xml error handler"); | |
550 | return; | |
551 | } | |
dcf266c0 JG |
552 | |
553 | fprintf(stderr, "XML Error: %s", errMsg); | |
554 | free(errMsg); | |
555 | } | |
556 | ||
28ab034a | 557 | static void fini_session_config_validation_ctx(struct session_config_validation_ctx *ctx) |
dcf266c0 JG |
558 | { |
559 | if (ctx->parser_ctx) { | |
560 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
561 | } | |
562 | ||
563 | if (ctx->schema) { | |
564 | xmlSchemaFree(ctx->schema); | |
565 | } | |
566 | ||
567 | if (ctx->schema_validation_ctx) { | |
568 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
569 | } | |
570 | ||
571 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
572 | } | |
573 | ||
cd9adb8b | 574 | static char *get_session_config_xsd_path() |
54e399cb JG |
575 | { |
576 | char *xsd_path; | |
e8fa9fb0 | 577 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
578 | size_t base_path_len; |
579 | size_t max_path_len; | |
580 | ||
581 | if (!base_path) { | |
582 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
583 | } | |
584 | ||
585 | base_path_len = strlen(base_path); | |
28ab034a | 586 | max_path_len = base_path_len + sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; |
64803277 | 587 | xsd_path = zmalloc<char>(max_path_len); |
54e399cb JG |
588 | if (!xsd_path) { |
589 | goto end; | |
590 | } | |
591 | ||
00a7f6f8 | 592 | strcpy(xsd_path, base_path); |
54e399cb JG |
593 | if (xsd_path[base_path_len - 1] != '/') { |
594 | xsd_path[base_path_len++] = '/'; | |
595 | } | |
596 | ||
00a7f6f8 | 597 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
598 | end: |
599 | return xsd_path; | |
600 | } | |
601 | ||
28ab034a | 602 | static int init_session_config_validation_ctx(struct session_config_validation_ctx *ctx) |
dcf266c0 JG |
603 | { |
604 | int ret; | |
54e399cb JG |
605 | char *xsd_path = get_session_config_xsd_path(); |
606 | ||
607 | if (!xsd_path) { | |
608 | ret = -LTTNG_ERR_NOMEM; | |
609 | goto end; | |
610 | } | |
dcf266c0 | 611 | |
54e399cb | 612 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
613 | if (!ctx->parser_ctx) { |
614 | ERR("XSD parser context creation failed"); | |
615 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
616 | goto end; | |
617 | } | |
cd9adb8b | 618 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, xml_error_handler, nullptr); |
dcf266c0 JG |
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 | ||
28ab034a | 634 | xmlSchemaSetValidErrors( |
cd9adb8b | 635 | ctx->schema_validation_ctx, xml_error_handler, xml_error_handler, nullptr); |
dcf266c0 JG |
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 | ||
28ab034a | 647 | static int parse_uint(xmlChar *str, uint64_t *val) |
dcf266c0 JG |
648 | { |
649 | int ret; | |
650 | char *endptr; | |
651 | ||
652 | if (!str || !val) { | |
653 | ret = -1; | |
654 | goto end; | |
655 | } | |
656 | ||
657 | *val = strtoull((const char *) str, &endptr, 10); | |
658 | if (!endptr || *endptr) { | |
659 | ret = -1; | |
660 | } else { | |
661 | ret = 0; | |
662 | } | |
663 | ||
664 | end: | |
665 | return ret; | |
666 | } | |
667 | ||
28ab034a | 668 | static int parse_int(xmlChar *str, int64_t *val) |
dcf266c0 JG |
669 | { |
670 | int ret; | |
671 | char *endptr; | |
672 | ||
673 | if (!str || !val) { | |
674 | ret = -1; | |
675 | goto end; | |
676 | } | |
677 | ||
678 | *val = strtoll((const char *) str, &endptr, 10); | |
679 | if (!endptr || *endptr) { | |
680 | ret = -1; | |
681 | } else { | |
682 | ret = 0; | |
683 | } | |
684 | ||
685 | end: | |
686 | return ret; | |
687 | } | |
688 | ||
28ab034a | 689 | static int parse_bool(xmlChar *str, int *val) |
dcf266c0 JG |
690 | { |
691 | int ret = 0; | |
692 | ||
693 | if (!str || !val) { | |
694 | ret = -1; | |
695 | goto end; | |
696 | } | |
697 | ||
28ab034a | 698 | if (!strcmp((const char *) str, config_xml_true) || !strcmp((const char *) str, "1")) { |
dcf266c0 | 699 | *val = 1; |
47945b17 | 700 | } else if (!strcmp((const char *) str, config_xml_false) || |
28ab034a | 701 | !strcmp((const char *) str, "0")) { |
dcf266c0 JG |
702 | *val = 0; |
703 | } else { | |
28ab034a | 704 | WARN("Invalid boolean value encountered (%s).", (const char *) str); |
dcf266c0 JG |
705 | ret = -1; |
706 | } | |
707 | end: | |
708 | return ret; | |
709 | } | |
710 | ||
28ab034a | 711 | static int get_domain_type(xmlChar *domain) |
dcf266c0 JG |
712 | { |
713 | int ret; | |
714 | ||
715 | if (!domain) { | |
716 | goto error; | |
717 | } | |
718 | ||
719 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
720 | ret = LTTNG_DOMAIN_KERNEL; | |
721 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
722 | ret = LTTNG_DOMAIN_UST; | |
723 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
724 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
725 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
726 | ret = LTTNG_DOMAIN_LOG4J; | |
47abf22b MJ |
727 | } else if (!strcmp((char *) domain, config_domain_type_log4j2)) { |
728 | ret = LTTNG_DOMAIN_LOG4J2; | |
0e115563 DG |
729 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
730 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
731 | } else { |
732 | goto error; | |
733 | } | |
734 | ||
735 | return ret; | |
736 | error: | |
737 | return -1; | |
738 | } | |
739 | ||
28ab034a | 740 | static int get_buffer_type(xmlChar *buffer_type) |
dcf266c0 JG |
741 | { |
742 | int ret; | |
743 | ||
744 | if (!buffer_type) { | |
745 | goto error; | |
746 | } | |
747 | ||
748 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
749 | ret = LTTNG_BUFFER_GLOBAL; | |
750 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
751 | ret = LTTNG_BUFFER_PER_UID; | |
752 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
753 | ret = LTTNG_BUFFER_PER_PID; | |
754 | } else { | |
755 | goto error; | |
756 | } | |
757 | ||
758 | return ret; | |
759 | error: | |
760 | return -1; | |
761 | } | |
762 | ||
28ab034a | 763 | static int get_overwrite_mode(xmlChar *overwrite_mode) |
dcf266c0 JG |
764 | { |
765 | int ret; | |
766 | ||
767 | if (!overwrite_mode) { | |
768 | goto error; | |
769 | } | |
770 | ||
771 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
772 | ret = 1; | |
28ab034a | 773 | } else if (!strcmp((char *) overwrite_mode, config_overwrite_mode_discard)) { |
dcf266c0 JG |
774 | ret = 0; |
775 | } else { | |
776 | goto error; | |
777 | } | |
778 | ||
779 | return ret; | |
780 | error: | |
781 | return -1; | |
782 | } | |
783 | ||
28ab034a | 784 | static int get_output_type(xmlChar *output_type) |
dcf266c0 JG |
785 | { |
786 | int ret; | |
787 | ||
788 | if (!output_type) { | |
789 | goto error; | |
790 | } | |
791 | ||
792 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
793 | ret = LTTNG_EVENT_MMAP; | |
794 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
795 | ret = LTTNG_EVENT_SPLICE; | |
796 | } else { | |
797 | goto error; | |
798 | } | |
799 | ||
800 | return ret; | |
801 | error: | |
802 | return -1; | |
803 | } | |
804 | ||
28ab034a | 805 | static int get_event_type(xmlChar *event_type) |
dcf266c0 JG |
806 | { |
807 | int ret; | |
808 | ||
809 | if (!event_type) { | |
810 | goto error; | |
811 | } | |
812 | ||
813 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
814 | ret = LTTNG_EVENT_ALL; | |
815 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
816 | ret = LTTNG_EVENT_TRACEPOINT; | |
817 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
818 | ret = LTTNG_EVENT_PROBE; | |
28ab034a | 819 | } else if (!strcmp((char *) event_type, config_event_type_userspace_probe)) { |
c1e83fb4 | 820 | ret = LTTNG_EVENT_USERSPACE_PROBE; |
dcf266c0 JG |
821 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
822 | ret = LTTNG_EVENT_FUNCTION; | |
28ab034a | 823 | } else if (!strcmp((char *) event_type, config_event_type_function_entry)) { |
dcf266c0 JG |
824 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
825 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
826 | ret = LTTNG_EVENT_NOOP; | |
827 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
828 | ret = LTTNG_EVENT_SYSCALL; | |
829 | } else { | |
830 | goto error; | |
831 | } | |
832 | ||
833 | return ret; | |
834 | error: | |
835 | return -1; | |
836 | } | |
837 | ||
28ab034a | 838 | static int get_loglevel_type(xmlChar *loglevel_type) |
dcf266c0 JG |
839 | { |
840 | int ret; | |
841 | ||
842 | if (!loglevel_type) { | |
843 | goto error; | |
844 | } | |
845 | ||
846 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
847 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
28ab034a | 848 | } else if (!strcmp((char *) loglevel_type, config_loglevel_type_range)) { |
dcf266c0 | 849 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; |
28ab034a | 850 | } else if (!strcmp((char *) loglevel_type, config_loglevel_type_single)) { |
dcf266c0 JG |
851 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; |
852 | } else { | |
853 | goto error; | |
854 | } | |
855 | ||
856 | return ret; | |
857 | error: | |
858 | return -1; | |
859 | } | |
860 | ||
861 | /* | |
862 | * Return the context type or -1 on error. | |
863 | */ | |
28ab034a | 864 | static int get_context_type(xmlChar *context_type) |
dcf266c0 JG |
865 | { |
866 | int ret; | |
867 | ||
868 | if (!context_type) { | |
869 | goto error; | |
870 | } | |
871 | ||
872 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
873 | ret = LTTNG_EVENT_CONTEXT_PID; | |
28ab034a | 874 | } else if (!strcmp((char *) context_type, config_event_context_procname)) { |
dcf266c0 | 875 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; |
28ab034a | 876 | } else if (!strcmp((char *) context_type, config_event_context_prio)) { |
dcf266c0 | 877 | ret = LTTNG_EVENT_CONTEXT_PRIO; |
28ab034a | 878 | } else if (!strcmp((char *) context_type, config_event_context_nice)) { |
dcf266c0 | 879 | ret = LTTNG_EVENT_CONTEXT_NICE; |
28ab034a | 880 | } else if (!strcmp((char *) context_type, config_event_context_vpid)) { |
dcf266c0 | 881 | ret = LTTNG_EVENT_CONTEXT_VPID; |
28ab034a | 882 | } else if (!strcmp((char *) context_type, config_event_context_tid)) { |
dcf266c0 | 883 | ret = LTTNG_EVENT_CONTEXT_TID; |
28ab034a | 884 | } else if (!strcmp((char *) context_type, config_event_context_vtid)) { |
dcf266c0 | 885 | ret = LTTNG_EVENT_CONTEXT_VTID; |
28ab034a | 886 | } else if (!strcmp((char *) context_type, config_event_context_ppid)) { |
dcf266c0 | 887 | ret = LTTNG_EVENT_CONTEXT_PPID; |
28ab034a | 888 | } else if (!strcmp((char *) context_type, config_event_context_vppid)) { |
dcf266c0 | 889 | ret = LTTNG_EVENT_CONTEXT_VPPID; |
28ab034a | 890 | } else if (!strcmp((char *) context_type, config_event_context_pthread_id)) { |
dcf266c0 | 891 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; |
28ab034a | 892 | } else if (!strcmp((char *) context_type, config_event_context_hostname)) { |
dcf266c0 | 893 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; |
28ab034a | 894 | } else if (!strcmp((char *) context_type, config_event_context_ip)) { |
dcf266c0 | 895 | ret = LTTNG_EVENT_CONTEXT_IP; |
28ab034a | 896 | } else if (!strcmp((char *) context_type, config_event_context_interruptible)) { |
1ae5e83e | 897 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; |
28ab034a | 898 | } else if (!strcmp((char *) context_type, config_event_context_preemptible)) { |
1ae5e83e | 899 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; |
28ab034a | 900 | } else if (!strcmp((char *) context_type, config_event_context_need_reschedule)) { |
1ae5e83e | 901 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; |
28ab034a | 902 | } else if (!strcmp((char *) context_type, config_event_context_migratable)) { |
1ae5e83e | 903 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; |
28ab034a | 904 | } else if (!strcmp((char *) context_type, config_event_context_callstack_user)) { |
16c4c991 | 905 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; |
28ab034a | 906 | } else if (!strcmp((char *) context_type, config_event_context_callstack_kernel)) { |
16c4c991 | 907 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; |
28ab034a | 908 | } else if (!strcmp((char *) context_type, config_event_context_cgroup_ns)) { |
40e14884 | 909 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; |
28ab034a | 910 | } else if (!strcmp((char *) context_type, config_event_context_ipc_ns)) { |
40e14884 | 911 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; |
28ab034a | 912 | } else if (!strcmp((char *) context_type, config_event_context_mnt_ns)) { |
40e14884 | 913 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; |
28ab034a | 914 | } else if (!strcmp((char *) context_type, config_event_context_net_ns)) { |
40e14884 | 915 | ret = LTTNG_EVENT_CONTEXT_NET_NS; |
28ab034a | 916 | } else if (!strcmp((char *) context_type, config_event_context_pid_ns)) { |
40e14884 | 917 | ret = LTTNG_EVENT_CONTEXT_PID_NS; |
28ab034a | 918 | } else if (!strcmp((char *) context_type, config_event_context_time_ns)) { |
d37ac3cd | 919 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; |
28ab034a | 920 | } else if (!strcmp((char *) context_type, config_event_context_user_ns)) { |
40e14884 | 921 | ret = LTTNG_EVENT_CONTEXT_USER_NS; |
28ab034a | 922 | } else if (!strcmp((char *) context_type, config_event_context_uts_ns)) { |
40e14884 | 923 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; |
28ab034a | 924 | } else if (!strcmp((char *) context_type, config_event_context_uid)) { |
499cbfa1 | 925 | ret = LTTNG_EVENT_CONTEXT_UID; |
28ab034a | 926 | } else if (!strcmp((char *) context_type, config_event_context_euid)) { |
499cbfa1 | 927 | ret = LTTNG_EVENT_CONTEXT_EUID; |
28ab034a | 928 | } else if (!strcmp((char *) context_type, config_event_context_suid)) { |
499cbfa1 | 929 | ret = LTTNG_EVENT_CONTEXT_SUID; |
28ab034a | 930 | } else if (!strcmp((char *) context_type, config_event_context_gid)) { |
499cbfa1 | 931 | ret = LTTNG_EVENT_CONTEXT_GID; |
28ab034a | 932 | } else if (!strcmp((char *) context_type, config_event_context_egid)) { |
499cbfa1 | 933 | ret = LTTNG_EVENT_CONTEXT_EGID; |
28ab034a | 934 | } else if (!strcmp((char *) context_type, config_event_context_sgid)) { |
499cbfa1 | 935 | ret = LTTNG_EVENT_CONTEXT_SGID; |
28ab034a | 936 | } else if (!strcmp((char *) context_type, config_event_context_vuid)) { |
499cbfa1 | 937 | ret = LTTNG_EVENT_CONTEXT_VUID; |
28ab034a | 938 | } else if (!strcmp((char *) context_type, config_event_context_veuid)) { |
499cbfa1 | 939 | ret = LTTNG_EVENT_CONTEXT_VEUID; |
28ab034a | 940 | } else if (!strcmp((char *) context_type, config_event_context_vsuid)) { |
499cbfa1 | 941 | ret = LTTNG_EVENT_CONTEXT_VSUID; |
28ab034a | 942 | } else if (!strcmp((char *) context_type, config_event_context_vgid)) { |
499cbfa1 | 943 | ret = LTTNG_EVENT_CONTEXT_VGID; |
28ab034a | 944 | } else if (!strcmp((char *) context_type, config_event_context_vegid)) { |
499cbfa1 | 945 | ret = LTTNG_EVENT_CONTEXT_VEGID; |
28ab034a | 946 | } else if (!strcmp((char *) context_type, config_event_context_vsgid)) { |
499cbfa1 | 947 | ret = LTTNG_EVENT_CONTEXT_VSGID; |
dcf266c0 JG |
948 | } else { |
949 | goto error; | |
950 | } | |
951 | ||
952 | return ret; | |
953 | error: | |
954 | return -1; | |
955 | } | |
956 | ||
28ab034a | 957 | static int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) |
dcf266c0 JG |
958 | { |
959 | int ret; | |
960 | xmlNodePtr node; | |
961 | ||
28ab034a | 962 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
963 | if (!strcmp((const char *) node->name, config_element_type)) { |
964 | /* domain type */ | |
965 | xmlChar *node_content = xmlNodeGetContent(node); | |
966 | if (!node_content) { | |
967 | ret = -LTTNG_ERR_NOMEM; | |
968 | goto end; | |
969 | } | |
970 | ||
971 | ret = get_domain_type(node_content); | |
972 | free(node_content); | |
973 | if (ret < 0) { | |
974 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
975 | goto end; | |
976 | } | |
977 | ||
3afa94ae | 978 | domain->type = (lttng_domain_type) ret; |
28ab034a | 979 | } else if (!strcmp((const char *) node->name, config_element_buffer_type)) { |
dcf266c0 JG |
980 | /* buffer type */ |
981 | xmlChar *node_content = xmlNodeGetContent(node); | |
982 | if (!node_content) { | |
983 | ret = -LTTNG_ERR_NOMEM; | |
984 | goto end; | |
985 | } | |
986 | ||
987 | ret = get_buffer_type(node_content); | |
988 | free(node_content); | |
989 | if (ret < 0) { | |
990 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
991 | goto end; | |
992 | } | |
993 | ||
3afa94ae | 994 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
995 | } |
996 | } | |
997 | ret = 0; | |
998 | end: | |
999 | return ret; | |
1000 | } | |
1001 | ||
28ab034a | 1002 | static int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, char **data_uri) |
dcf266c0 JG |
1003 | { |
1004 | xmlNodePtr node; | |
1005 | ||
1006 | for (node = xmlFirstElementChild(net_output_node); node; | |
28ab034a | 1007 | node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1008 | if (!strcmp((const char *) node->name, config_element_control_uri)) { |
1009 | /* control_uri */ | |
1010 | *control_uri = (char *) xmlNodeGetContent(node); | |
1011 | if (!*control_uri) { | |
1012 | break; | |
1013 | } | |
1014 | } else { | |
1015 | /* data_uri */ | |
1016 | *data_uri = (char *) xmlNodeGetContent(node); | |
1017 | if (!*data_uri) { | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1024 | } | |
1025 | ||
28ab034a | 1026 | static int process_consumer_output(xmlNodePtr consumer_output_node, struct consumer_output *output) |
dcf266c0 JG |
1027 | { |
1028 | int ret; | |
1029 | xmlNodePtr node; | |
1030 | ||
a0377dfe | 1031 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1032 | |
1033 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
28ab034a | 1034 | node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1035 | if (!strcmp((const char *) node->name, config_element_enabled)) { |
1036 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1037 | ||
1038 | /* enabled */ | |
1039 | if (!enabled_str) { | |
1040 | ret = -LTTNG_ERR_NOMEM; | |
1041 | goto end; | |
1042 | } | |
1043 | ||
1044 | ret = parse_bool(enabled_str, &output->enabled); | |
1045 | free(enabled_str); | |
1046 | if (ret) { | |
1047 | goto end; | |
1048 | } | |
1049 | } else { | |
1050 | xmlNodePtr output_type_node; | |
1051 | ||
1052 | /* destination */ | |
1053 | output_type_node = xmlFirstElementChild(node); | |
1054 | if (!output_type_node) { | |
1055 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1056 | goto end; | |
1057 | } | |
1058 | ||
28ab034a | 1059 | if (!strcmp((const char *) output_type_node->name, config_element_path)) { |
dcf266c0 JG |
1060 | /* path */ |
1061 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1062 | if (!output->path) { | |
1063 | ret = -LTTNG_ERR_NOMEM; | |
1064 | goto end; | |
1065 | } | |
1066 | } else { | |
1067 | /* net_output */ | |
28ab034a JG |
1068 | ret = get_net_output_uris( |
1069 | output_type_node, &output->control_uri, &output->data_uri); | |
dcf266c0 JG |
1070 | if (ret) { |
1071 | goto end; | |
1072 | } | |
1073 | } | |
1074 | } | |
1075 | } | |
1076 | ret = 0; | |
1077 | ||
1078 | end: | |
1079 | if (ret) { | |
1080 | free(output->path); | |
1081 | free(output->control_uri); | |
1082 | free(output->data_uri); | |
1083 | memset(output, 0, sizeof(struct consumer_output)); | |
1084 | } | |
1085 | return ret; | |
1086 | } | |
1087 | ||
28ab034a JG |
1088 | static int create_snapshot_session(const char *session_name, |
1089 | xmlNodePtr output_node, | |
1090 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1091 | { |
1092 | int ret; | |
fbc3f258 | 1093 | enum lttng_error_code ret_code; |
cd9adb8b | 1094 | xmlNodePtr node = nullptr; |
dcf266c0 JG |
1095 | xmlNodePtr snapshot_output_list_node; |
1096 | xmlNodePtr snapshot_output_node; | |
fbc3f258 | 1097 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1098 | |
a0377dfe | 1099 | LTTNG_ASSERT(session_name); |
fbc3f258 | 1100 | LTTNG_ASSERT(output_node); |
dcf266c0 | 1101 | |
fbc3f258 JR |
1102 | /* |
1103 | * Use a descriptor without output since consumer output size is not | |
1104 | * exposed by the session descriptor api. | |
1105 | */ | |
1106 | session_descriptor = lttng_session_descriptor_snapshot_create(session_name); | |
1107 | if (session_descriptor == nullptr) { | |
1108 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
1109 | goto end; |
1110 | } | |
1111 | ||
fbc3f258 JR |
1112 | ret_code = lttng_create_session_ext(session_descriptor); |
1113 | if (ret_code != LTTNG_OK) { | |
1114 | ret = -ret_code; | |
dcf266c0 JG |
1115 | goto end; |
1116 | } | |
1117 | ||
1118 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1119 | ||
1120 | /* Parse and create snapshot outputs */ | |
28ab034a JG |
1121 | for (snapshot_output_node = xmlFirstElementChild(snapshot_output_list_node); |
1122 | snapshot_output_node; | |
1123 | snapshot_output_node = xmlNextElementSibling(snapshot_output_node)) { | |
cd9adb8b | 1124 | char *name = nullptr; |
dcf266c0 | 1125 | uint64_t max_size = UINT64_MAX; |
1c9a0b0e | 1126 | struct consumer_output output = {}; |
cd9adb8b JG |
1127 | struct lttng_snapshot_output *snapshot_output = nullptr; |
1128 | const char *control_uri = nullptr; | |
1129 | const char *data_uri = nullptr; | |
1130 | const char *path = nullptr; | |
dcf266c0 JG |
1131 | |
1132 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
28ab034a JG |
1133 | node = xmlNextElementSibling(node)) { |
1134 | if (!strcmp((const char *) node->name, config_element_name)) { | |
dcf266c0 JG |
1135 | /* name */ |
1136 | name = (char *) xmlNodeGetContent(node); | |
1137 | if (!name) { | |
1138 | ret = -LTTNG_ERR_NOMEM; | |
1139 | goto error_snapshot_output; | |
1140 | } | |
28ab034a | 1141 | } else if (!strcmp((const char *) node->name, config_element_max_size)) { |
dcf266c0 JG |
1142 | xmlChar *content = xmlNodeGetContent(node); |
1143 | ||
1144 | /* max_size */ | |
1145 | if (!content) { | |
1146 | ret = -LTTNG_ERR_NOMEM; | |
1147 | goto error_snapshot_output; | |
1148 | } | |
1149 | ret = parse_uint(content, &max_size); | |
1150 | free(content); | |
1151 | if (ret) { | |
1152 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1153 | goto error_snapshot_output; | |
1154 | } | |
1155 | } else { | |
1156 | /* consumer_output */ | |
1157 | ret = process_consumer_output(node, &output); | |
1158 | if (ret) { | |
1159 | goto error_snapshot_output; | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | ||
21a3f144 JR |
1164 | control_uri = output.control_uri; |
1165 | data_uri = output.data_uri; | |
1166 | path = output.path; | |
1167 | ||
1b08cbce JR |
1168 | if (overrides) { |
1169 | if (overrides->path_url) { | |
1b08cbce | 1170 | path = overrides->path_url; |
21a3f144 | 1171 | /* Control/data_uri are null */ |
cd9adb8b JG |
1172 | control_uri = nullptr; |
1173 | data_uri = nullptr; | |
1b08cbce JR |
1174 | } else { |
1175 | if (overrides->ctrl_url) { | |
1b08cbce | 1176 | control_uri = overrides->ctrl_url; |
21a3f144 | 1177 | /* path is null */ |
cd9adb8b | 1178 | path = nullptr; |
1b08cbce JR |
1179 | } |
1180 | if (overrides->data_url) { | |
1b08cbce | 1181 | data_uri = overrides->data_url; |
21a3f144 | 1182 | /* path is null */ |
cd9adb8b | 1183 | path = nullptr; |
1b08cbce JR |
1184 | } |
1185 | } | |
1b08cbce JR |
1186 | } |
1187 | ||
dcf266c0 JG |
1188 | snapshot_output = lttng_snapshot_output_create(); |
1189 | if (!snapshot_output) { | |
1190 | ret = -LTTNG_ERR_NOMEM; | |
1191 | goto error_snapshot_output; | |
1192 | } | |
1193 | ||
1194 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1195 | if (ret) { | |
1196 | goto error_snapshot_output; | |
1197 | } | |
1198 | ||
1199 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1200 | if (ret) { | |
1201 | goto error_snapshot_output; | |
1202 | } | |
1203 | ||
1b08cbce | 1204 | if (path) { |
28ab034a | 1205 | ret = lttng_snapshot_output_set_ctrl_url(path, snapshot_output); |
dcf266c0 JG |
1206 | if (ret) { |
1207 | goto error_snapshot_output; | |
1208 | } | |
1209 | } else { | |
1b08cbce JR |
1210 | if (control_uri) { |
1211 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
28ab034a | 1212 | snapshot_output); |
dcf266c0 JG |
1213 | if (ret) { |
1214 | goto error_snapshot_output; | |
1215 | } | |
1216 | } | |
1217 | ||
1b08cbce | 1218 | if (data_uri) { |
28ab034a | 1219 | ret = lttng_snapshot_output_set_data_url(data_uri, snapshot_output); |
dcf266c0 JG |
1220 | if (ret) { |
1221 | goto error_snapshot_output; | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
28ab034a | 1227 | error_snapshot_output: |
dcf266c0 JG |
1228 | free(name); |
1229 | free(output.path); | |
1230 | free(output.control_uri); | |
1231 | free(output.data_uri); | |
1232 | lttng_snapshot_output_destroy(snapshot_output); | |
1233 | if (ret) { | |
1234 | goto end; | |
1235 | } | |
1236 | } | |
1237 | end: | |
fbc3f258 | 1238 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1239 | return ret; |
1240 | } | |
1241 | ||
28ab034a JG |
1242 | static int create_session(const char *name, |
1243 | xmlNodePtr output_node, | |
1244 | uint64_t live_timer_interval, | |
1245 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 | 1246 | { |
fbc3f258 JR |
1247 | int ret = 0; |
1248 | enum lttng_error_code ret_code; | |
1c9a0b0e | 1249 | struct consumer_output output = {}; |
dcf266c0 | 1250 | xmlNodePtr consumer_output_node; |
cd9adb8b JG |
1251 | const char *control_uri = nullptr; |
1252 | const char *data_uri = nullptr; | |
1253 | const char *path = nullptr; | |
fbc3f258 | 1254 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1255 | |
a0377dfe | 1256 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1257 | |
1258 | if (output_node) { | |
1259 | consumer_output_node = xmlFirstElementChild(output_node); | |
1260 | if (!consumer_output_node) { | |
1261 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1262 | goto end; | |
1263 | } | |
1264 | ||
1265 | if (strcmp((const char *) consumer_output_node->name, | |
5c7248cd | 1266 | config_element_consumer_output) != 0) { |
dcf266c0 | 1267 | WARN("Invalid output type, expected %s node", |
28ab034a | 1268 | config_element_consumer_output); |
dcf266c0 JG |
1269 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1270 | goto end; | |
1271 | } | |
1272 | ||
1273 | ret = process_consumer_output(consumer_output_node, &output); | |
1274 | if (ret) { | |
1275 | goto end; | |
1276 | } | |
1277 | } | |
1278 | ||
21a3f144 JR |
1279 | control_uri = output.control_uri; |
1280 | data_uri = output.data_uri; | |
1281 | path = output.path; | |
1282 | ||
1b08cbce JR |
1283 | /* Check for override and apply them */ |
1284 | if (overrides) { | |
1285 | if (overrides->path_url) { | |
1b08cbce | 1286 | path = overrides->path_url; |
21a3f144 | 1287 | /* control/data_uri are null */; |
cd9adb8b JG |
1288 | control_uri = nullptr; |
1289 | data_uri = nullptr; | |
1b08cbce JR |
1290 | } else { |
1291 | if (overrides->ctrl_url) { | |
1b08cbce | 1292 | control_uri = overrides->ctrl_url; |
21a3f144 | 1293 | /* path is null */ |
cd9adb8b | 1294 | path = nullptr; |
1b08cbce JR |
1295 | } |
1296 | if (overrides->data_url) { | |
1b08cbce | 1297 | data_uri = overrides->data_url; |
21a3f144 | 1298 | /* path is null */ |
cd9adb8b | 1299 | path = nullptr; |
1b08cbce JR |
1300 | } |
1301 | } | |
1b08cbce JR |
1302 | } |
1303 | ||
1304 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { | |
dcf266c0 JG |
1305 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1306 | goto end; | |
1307 | } | |
1308 | ||
1b08cbce | 1309 | if (control_uri || data_uri) { |
dcf266c0 JG |
1310 | /* network destination */ |
1311 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1312 | /* |
1313 | * URLs are provided for sure since the test above make sure that | |
1314 | * with a live timer the data and control URIs are provided. So, | |
1315 | * NULL is passed here and will be set right after. | |
1316 | */ | |
fbc3f258 | 1317 | session_descriptor = lttng_session_descriptor_live_network_create( |
28ab034a | 1318 | name, control_uri, data_uri, live_timer_interval); |
dcf266c0 | 1319 | } else { |
fbc3f258 | 1320 | session_descriptor = lttng_session_descriptor_network_create( |
28ab034a | 1321 | name, control_uri, data_uri); |
dcf266c0 | 1322 | } |
95681498 | 1323 | |
fbc3f258 JR |
1324 | } else if (path != nullptr) { |
1325 | session_descriptor = lttng_session_descriptor_local_create(name, path); | |
dcf266c0 | 1326 | } else { |
fbc3f258 JR |
1327 | /* No output */ |
1328 | session_descriptor = lttng_session_descriptor_create(name); | |
1329 | } | |
1330 | ||
1331 | if (session_descriptor == nullptr) { | |
1332 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1333 | goto end; | |
dcf266c0 | 1334 | } |
fbc3f258 JR |
1335 | |
1336 | ret_code = lttng_create_session_ext(session_descriptor); | |
1337 | if (ret_code != LTTNG_OK) { | |
1338 | ret = -ret_code; | |
1339 | goto end; | |
1340 | } | |
1341 | ||
dcf266c0 JG |
1342 | end: |
1343 | free(output.path); | |
1344 | free(output.control_uri); | |
1345 | free(output.data_uri); | |
fbc3f258 | 1346 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1347 | return ret; |
1348 | } | |
c1e83fb4 | 1349 | |
28ab034a JG |
1350 | static struct lttng_userspace_probe_location * |
1351 | process_userspace_probe_function_attribute_node(xmlNodePtr attribute_node) | |
c1e83fb4 | 1352 | { |
c1e83fb4 | 1353 | xmlNodePtr function_attribute_node; |
cd9adb8b JG |
1354 | char *function_name = nullptr, *binary_path = nullptr; |
1355 | struct lttng_userspace_probe_location *location = nullptr; | |
1356 | struct lttng_userspace_probe_location_lookup_method *lookup_method = nullptr; | |
c1e83fb4 FD |
1357 | |
1358 | /* | |
1359 | * Process userspace probe location function attributes. The order of | |
1360 | * the fields are not guaranteed so we need to iterate over all fields | |
1361 | * and check at the end if everything we need for this location type is | |
1362 | * there. | |
1363 | */ | |
28ab034a JG |
1364 | for (function_attribute_node = xmlFirstElementChild(attribute_node); |
1365 | function_attribute_node; | |
1366 | function_attribute_node = xmlNextElementSibling(function_attribute_node)) { | |
c1e83fb4 FD |
1367 | /* Handle function name, binary path and lookup method. */ |
1368 | if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1369 | config_element_userspace_probe_function_location_function_name)) { |
717d2dba | 1370 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1371 | if (!function_name) { |
c1e83fb4 FD |
1372 | goto error; |
1373 | } | |
1374 | } else if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1375 | config_element_userspace_probe_location_binary_path)) { |
717d2dba | 1376 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1377 | if (!binary_path) { |
c1e83fb4 FD |
1378 | goto error; |
1379 | } | |
1380 | } else if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1381 | config_element_userspace_probe_lookup)) { |
717d2dba | 1382 | char *lookup_method_name; |
c1e83fb4 | 1383 | |
28ab034a | 1384 | lookup_method_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1385 | if (!lookup_method_name) { |
c1e83fb4 FD |
1386 | goto error; |
1387 | } | |
1388 | ||
1389 | /* | |
1390 | * function_default lookup method defaults to | |
1391 | * function_elf lookup method at the moment. | |
1392 | */ | |
28ab034a JG |
1393 | if (!strcmp(lookup_method_name, |
1394 | config_element_userspace_probe_lookup_function_elf) || | |
1395 | !strcmp(lookup_method_name, | |
1396 | config_element_userspace_probe_lookup_function_default)) { | |
1397 | lookup_method = | |
1398 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
c1e83fb4 FD |
1399 | if (!lookup_method) { |
1400 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1401 | } |
1402 | } else { | |
717d2dba JG |
1403 | WARN("Unknown function lookup method"); |
1404 | } | |
1405 | ||
1406 | free(lookup_method_name); | |
1407 | if (!lookup_method) { | |
c1e83fb4 FD |
1408 | goto error; |
1409 | } | |
1410 | } else { | |
1411 | goto error; | |
1412 | } | |
1413 | ||
1414 | /* Check if all the necessary fields were found. */ | |
1415 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1416 | /* Ownership of lookup_method is transferred. */ |
28ab034a JG |
1417 | location = lttng_userspace_probe_location_function_create( |
1418 | binary_path, function_name, lookup_method); | |
cd9adb8b | 1419 | lookup_method = nullptr; |
717d2dba | 1420 | goto error; |
c1e83fb4 FD |
1421 | } |
1422 | } | |
1423 | error: | |
717d2dba | 1424 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1425 | free(binary_path); |
1426 | free(function_name); | |
c1e83fb4 FD |
1427 | return location; |
1428 | } | |
1429 | ||
28ab034a JG |
1430 | static struct lttng_userspace_probe_location * |
1431 | process_userspace_probe_tracepoint_attribute_node(xmlNodePtr attribute_node) | |
c1e83fb4 | 1432 | { |
c1e83fb4 | 1433 | xmlNodePtr tracepoint_attribute_node; |
cd9adb8b JG |
1434 | char *probe_name = nullptr, *provider_name = nullptr, *binary_path = nullptr; |
1435 | struct lttng_userspace_probe_location *location = nullptr; | |
1436 | struct lttng_userspace_probe_location_lookup_method *lookup_method = nullptr; | |
c1e83fb4 FD |
1437 | |
1438 | /* | |
1439 | * Process userspace probe location tracepoint attributes. The order of | |
1440 | * the fields are not guaranteed so we need to iterate over all fields | |
1441 | * and check at the end if everything we need for this location type is | |
1442 | * there. | |
1443 | */ | |
28ab034a JG |
1444 | for (tracepoint_attribute_node = xmlFirstElementChild(attribute_node); |
1445 | tracepoint_attribute_node; | |
1446 | tracepoint_attribute_node = xmlNextElementSibling(tracepoint_attribute_node)) { | |
c1e83fb4 | 1447 | if (!strcmp((const char *) tracepoint_attribute_node->name, |
28ab034a | 1448 | config_element_userspace_probe_tracepoint_location_probe_name)) { |
717d2dba | 1449 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1450 | if (!probe_name) { |
c1e83fb4 FD |
1451 | goto error; |
1452 | } | |
1453 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1454 | config_element_userspace_probe_tracepoint_location_provider_name)) { |
717d2dba | 1455 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1456 | if (!provider_name) { |
c1e83fb4 FD |
1457 | goto error; |
1458 | } | |
1459 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1460 | config_element_userspace_probe_location_binary_path)) { |
717d2dba | 1461 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1462 | if (!binary_path) { |
c1e83fb4 FD |
1463 | goto error; |
1464 | } | |
1465 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1466 | config_element_userspace_probe_lookup)) { |
717d2dba | 1467 | char *lookup_method_name; |
c1e83fb4 | 1468 | |
28ab034a | 1469 | lookup_method_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1470 | if (!lookup_method_name) { |
c1e83fb4 FD |
1471 | goto error; |
1472 | } | |
1473 | ||
1474 | if (!strcmp(lookup_method_name, | |
28ab034a | 1475 | config_element_userspace_probe_lookup_tracepoint_sdt)) { |
c1e83fb4 FD |
1476 | lookup_method = |
1477 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1478 | if (!lookup_method) { | |
1479 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1480 | } |
1481 | } else { | |
717d2dba JG |
1482 | WARN("Unknown tracepoint lookup method"); |
1483 | } | |
1484 | ||
1485 | free(lookup_method_name); | |
1486 | if (!lookup_method) { | |
c1e83fb4 FD |
1487 | goto error; |
1488 | } | |
1489 | } else { | |
717d2dba | 1490 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1491 | goto error; |
1492 | } | |
1493 | ||
1494 | /* Check if all the necessary fields were found. */ | |
1495 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1496 | /* Ownership of lookup_method is transferred. */ |
28ab034a JG |
1497 | location = lttng_userspace_probe_location_tracepoint_create( |
1498 | binary_path, provider_name, probe_name, lookup_method); | |
cd9adb8b | 1499 | lookup_method = nullptr; |
717d2dba | 1500 | goto error; |
c1e83fb4 FD |
1501 | } |
1502 | } | |
1503 | error: | |
717d2dba | 1504 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1505 | free(binary_path); |
c1e83fb4 | 1506 | free(provider_name); |
717d2dba | 1507 | free(probe_name); |
c1e83fb4 FD |
1508 | return location; |
1509 | } | |
1510 | ||
28ab034a JG |
1511 | static int process_probe_attribute_node(xmlNodePtr probe_attribute_node, |
1512 | struct lttng_event_probe_attr *attr) | |
dcf266c0 JG |
1513 | { |
1514 | int ret; | |
1515 | ||
a0377dfe FD |
1516 | LTTNG_ASSERT(probe_attribute_node); |
1517 | LTTNG_ASSERT(attr); | |
dcf266c0 | 1518 | |
28ab034a | 1519 | if (!strcmp((const char *) probe_attribute_node->name, config_element_address)) { |
dcf266c0 JG |
1520 | xmlChar *content; |
1521 | uint64_t addr = 0; | |
1522 | ||
1523 | /* addr */ | |
1524 | content = xmlNodeGetContent(probe_attribute_node); | |
1525 | if (!content) { | |
1526 | ret = -LTTNG_ERR_NOMEM; | |
1527 | goto end; | |
1528 | } | |
1529 | ||
1530 | ret = parse_uint(content, &addr); | |
1531 | free(content); | |
1532 | if (ret) { | |
1533 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1534 | goto end; | |
1535 | } | |
1536 | ||
1537 | attr->addr = addr; | |
28ab034a | 1538 | } else if (!strcmp((const char *) probe_attribute_node->name, config_element_offset)) { |
dcf266c0 JG |
1539 | xmlChar *content; |
1540 | uint64_t offset = 0; | |
1541 | ||
1542 | /* offset */ | |
1543 | content = xmlNodeGetContent(probe_attribute_node); | |
1544 | if (!content) { | |
1545 | ret = -LTTNG_ERR_NOMEM; | |
1546 | goto end; | |
1547 | } | |
1548 | ||
1549 | ret = parse_uint(content, &offset); | |
1550 | free(content); | |
1551 | if (ret) { | |
1552 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1553 | goto end; | |
1554 | } | |
1555 | ||
1556 | attr->offset = offset; | |
28ab034a | 1557 | } else if (!strcmp((const char *) probe_attribute_node->name, config_element_symbol_name)) { |
dcf266c0 | 1558 | xmlChar *content; |
dcf266c0 JG |
1559 | |
1560 | /* symbol_name */ | |
1561 | content = xmlNodeGetContent(probe_attribute_node); | |
1562 | if (!content) { | |
1563 | ret = -LTTNG_ERR_NOMEM; | |
1564 | goto end; | |
1565 | } | |
1566 | ||
28ab034a JG |
1567 | ret = lttng_strncpy( |
1568 | attr->symbol_name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 | 1569 | if (ret == -1) { |
28ab034a JG |
1570 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", |
1571 | (const char *) content, | |
1572 | strlen((const char *) content), | |
1573 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1574 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1575 | free(content); | |
1576 | goto end; | |
1577 | } | |
dcf266c0 JG |
1578 | free(content); |
1579 | } | |
1580 | ret = 0; | |
1581 | end: | |
1582 | return ret; | |
1583 | } | |
1584 | ||
28ab034a JG |
1585 | static int process_event_node(xmlNodePtr event_node, |
1586 | struct lttng_handle *handle, | |
1587 | const char *channel_name, | |
1588 | const enum process_event_node_phase phase) | |
dcf266c0 | 1589 | { |
d7b645e2 | 1590 | int ret = 0, i; |
dcf266c0 | 1591 | xmlNodePtr node; |
91744e14 | 1592 | struct lttng_event *event; |
cd9adb8b | 1593 | char **exclusions = nullptr; |
dcf266c0 | 1594 | unsigned long exclusion_count = 0; |
cd9adb8b | 1595 | char *filter_expression = nullptr; |
dcf266c0 | 1596 | |
a0377dfe FD |
1597 | LTTNG_ASSERT(event_node); |
1598 | LTTNG_ASSERT(handle); | |
1599 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1600 | |
91744e14 FD |
1601 | event = lttng_event_create(); |
1602 | if (!event) { | |
1603 | ret = -LTTNG_ERR_NOMEM; | |
1604 | goto end; | |
1605 | } | |
dcf266c0 | 1606 | |
f40eba3d | 1607 | /* Initialize default log level which varies by domain */ |
28ab034a | 1608 | switch (handle->domain.type) { |
f40eba3d | 1609 | case LTTNG_DOMAIN_JUL: |
91744e14 | 1610 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1611 | break; |
1612 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1613 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d | 1614 | break; |
47abf22b MJ |
1615 | case LTTNG_DOMAIN_LOG4J2: |
1616 | event->loglevel = LTTNG_LOGLEVEL_LOG4J2_ALL; | |
1617 | break; | |
f40eba3d | 1618 | case LTTNG_DOMAIN_PYTHON: |
91744e14 | 1619 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1620 | break; |
1621 | case LTTNG_DOMAIN_UST: | |
1622 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1623 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1624 | break; |
1625 | default: | |
a0377dfe | 1626 | abort(); |
f40eba3d JG |
1627 | } |
1628 | ||
28ab034a | 1629 | for (node = xmlFirstElementChild(event_node); node; node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1630 | if (!strcmp((const char *) node->name, config_element_name)) { |
1631 | xmlChar *content; | |
dcf266c0 JG |
1632 | |
1633 | /* name */ | |
1634 | content = xmlNodeGetContent(node); | |
1635 | if (!content) { | |
1636 | ret = -LTTNG_ERR_NOMEM; | |
1637 | goto end; | |
1638 | } | |
1639 | ||
28ab034a JG |
1640 | ret = lttng_strncpy( |
1641 | event->name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 JG |
1642 | if (ret == -1) { |
1643 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
1644 | (const char *) content, |
1645 | strlen((const char *) content), | |
1646 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1647 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1648 | free(content); | |
1649 | goto end; | |
1650 | } | |
dcf266c0 | 1651 | free(content); |
28ab034a | 1652 | } else if (!strcmp((const char *) node->name, config_element_enabled)) { |
dcf266c0 JG |
1653 | xmlChar *content = xmlNodeGetContent(node); |
1654 | ||
1655 | /* enabled */ | |
1656 | if (!content) { | |
1657 | ret = -LTTNG_ERR_NOMEM; | |
1658 | goto end; | |
1659 | } | |
1660 | ||
91744e14 | 1661 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1662 | free(content); |
1663 | if (ret) { | |
1664 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1665 | goto end; | |
1666 | } | |
28ab034a | 1667 | } else if (!strcmp((const char *) node->name, config_element_type)) { |
dcf266c0 JG |
1668 | xmlChar *content = xmlNodeGetContent(node); |
1669 | ||
1670 | /* type */ | |
1671 | if (!content) { | |
1672 | ret = -LTTNG_ERR_NOMEM; | |
1673 | goto end; | |
1674 | } | |
1675 | ||
1676 | ret = get_event_type(content); | |
1677 | free(content); | |
1678 | if (ret < 0) { | |
1679 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1680 | goto end; | |
1681 | } | |
1682 | ||
3afa94ae | 1683 | event->type = (lttng_event_type) ret; |
28ab034a | 1684 | } else if (!strcmp((const char *) node->name, config_element_loglevel_type)) { |
dcf266c0 JG |
1685 | xmlChar *content = xmlNodeGetContent(node); |
1686 | ||
1687 | /* loglevel_type */ | |
1688 | if (!content) { | |
1689 | ret = -LTTNG_ERR_NOMEM; | |
1690 | goto end; | |
1691 | } | |
1692 | ||
1693 | ret = get_loglevel_type(content); | |
1694 | free(content); | |
1695 | if (ret < 0) { | |
1696 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1697 | goto end; | |
1698 | } | |
1699 | ||
3afa94ae | 1700 | event->loglevel_type = (lttng_loglevel_type) ret; |
28ab034a | 1701 | } else if (!strcmp((const char *) node->name, config_element_loglevel)) { |
dcf266c0 JG |
1702 | xmlChar *content; |
1703 | int64_t loglevel = 0; | |
1704 | ||
1705 | /* loglevel */ | |
1706 | content = xmlNodeGetContent(node); | |
1707 | if (!content) { | |
1708 | ret = -LTTNG_ERR_NOMEM; | |
1709 | goto end; | |
1710 | } | |
1711 | ||
1712 | ret = parse_int(content, &loglevel); | |
1713 | free(content); | |
1714 | if (ret) { | |
1715 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1716 | goto end; | |
1717 | } | |
1718 | ||
1719 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1720 | WARN("loglevel out of range."); | |
1721 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1722 | goto end; | |
1723 | } | |
1724 | ||
91744e14 | 1725 | event->loglevel = loglevel; |
28ab034a JG |
1726 | } else if (!strcmp((const char *) node->name, config_element_filter)) { |
1727 | xmlChar *content = xmlNodeGetContent(node); | |
dcf266c0 JG |
1728 | |
1729 | /* filter */ | |
1730 | if (!content) { | |
1731 | ret = -LTTNG_ERR_NOMEM; | |
1732 | goto end; | |
1733 | } | |
1734 | ||
02d8ac3d | 1735 | free(filter_expression); |
dcf266c0 JG |
1736 | filter_expression = strdup((char *) content); |
1737 | free(content); | |
1738 | if (!filter_expression) { | |
1739 | ret = -LTTNG_ERR_NOMEM; | |
1740 | goto end; | |
1741 | } | |
28ab034a | 1742 | } else if (!strcmp((const char *) node->name, config_element_exclusions)) { |
dcf266c0 JG |
1743 | xmlNodePtr exclusion_node; |
1744 | int exclusion_index = 0; | |
1745 | ||
1746 | /* exclusions */ | |
1747 | if (exclusions) { | |
1748 | /* | |
1749 | * Exclusions has already been initialized, | |
1750 | * invalid file. | |
1751 | */ | |
1752 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1753 | goto end; | |
1754 | } | |
1755 | ||
1756 | exclusion_count = xmlChildElementCount(node); | |
1757 | if (!exclusion_count) { | |
1758 | continue; | |
1759 | } | |
1760 | ||
64803277 | 1761 | exclusions = calloc<char *>(exclusion_count); |
dcf266c0 JG |
1762 | if (!exclusions) { |
1763 | exclusion_count = 0; | |
1764 | ret = -LTTNG_ERR_NOMEM; | |
1765 | goto end; | |
1766 | } | |
1767 | ||
1768 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
28ab034a JG |
1769 | exclusion_node = xmlNextElementSibling(exclusion_node)) { |
1770 | xmlChar *content = xmlNodeGetContent(exclusion_node); | |
dcf266c0 JG |
1771 | |
1772 | if (!content) { | |
1773 | ret = -LTTNG_ERR_NOMEM; | |
1774 | goto end; | |
1775 | } | |
1776 | ||
1777 | exclusions[exclusion_index] = strdup((const char *) content); | |
1778 | free(content); | |
1779 | if (!exclusions[exclusion_index]) { | |
1780 | ret = -LTTNG_ERR_NOMEM; | |
1781 | goto end; | |
1782 | } | |
1783 | exclusion_index++; | |
1784 | } | |
1785 | ||
91744e14 | 1786 | event->exclusion = 1; |
28ab034a | 1787 | } else if (!strcmp((const char *) node->name, config_element_attributes)) { |
dcf266c0 JG |
1788 | xmlNodePtr attribute_node = xmlFirstElementChild(node); |
1789 | ||
1790 | /* attributes */ | |
1791 | if (!attribute_node) { | |
1792 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1793 | goto end; | |
1794 | } | |
1795 | ||
c1e83fb4 | 1796 | if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1797 | config_element_probe_attributes)) { |
dcf266c0 JG |
1798 | xmlNodePtr probe_attribute_node; |
1799 | ||
1800 | /* probe_attributes */ | |
28ab034a JG |
1801 | for (probe_attribute_node = xmlFirstElementChild(attribute_node); |
1802 | probe_attribute_node; | |
1803 | probe_attribute_node = | |
1804 | xmlNextElementSibling(probe_attribute_node)) { | |
dcf266c0 | 1805 | ret = process_probe_attribute_node(probe_attribute_node, |
28ab034a | 1806 | &event->attr.probe); |
dcf266c0 JG |
1807 | if (ret) { |
1808 | goto end; | |
1809 | } | |
1810 | } | |
c1e83fb4 | 1811 | } else if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1812 | config_element_function_attributes)) { |
dcf266c0 JG |
1813 | size_t sym_len; |
1814 | xmlChar *content; | |
1815 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1816 | ||
1817 | /* function_attributes */ | |
1818 | content = xmlNodeGetContent(symbol_node); | |
1819 | if (!content) { | |
1820 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1821 | goto end; | |
1822 | } | |
1823 | ||
1824 | sym_len = strlen((char *) content); | |
1825 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1826 | WARN("Function name too long."); | |
1827 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1828 | free(content); | |
1829 | goto end; | |
1830 | } | |
1831 | ||
d2e67842 | 1832 | ret = lttng_strncpy( |
28ab034a | 1833 | event->attr.ftrace.symbol_name, (char *) content, sym_len); |
d2e67842 JG |
1834 | if (ret == -1) { |
1835 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1836 | free(content); | |
1837 | goto end; | |
1838 | } | |
dcf266c0 | 1839 | free(content); |
c1e83fb4 | 1840 | } else if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1841 | config_element_userspace_probe_tracepoint_attributes)) { |
c1e83fb4 FD |
1842 | struct lttng_userspace_probe_location *location; |
1843 | ||
28ab034a JG |
1844 | location = process_userspace_probe_tracepoint_attribute_node( |
1845 | attribute_node); | |
c1e83fb4 FD |
1846 | if (!location) { |
1847 | WARN("Error processing userspace probe tracepoint attribute"); | |
1848 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1849 | goto end; | |
1850 | } | |
28ab034a | 1851 | ret = lttng_event_set_userspace_probe_location(event, location); |
c1e83fb4 FD |
1852 | if (ret) { |
1853 | WARN("Error setting userspace probe location field"); | |
28ab034a | 1854 | lttng_userspace_probe_location_destroy(location); |
c1e83fb4 FD |
1855 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1856 | goto end; | |
1857 | } | |
1858 | } else if (!strcmp((const char *) attribute_node->name, | |
28ab034a | 1859 | config_element_userspace_probe_function_attributes)) { |
c1e83fb4 FD |
1860 | struct lttng_userspace_probe_location *location; |
1861 | ||
28ab034a JG |
1862 | location = process_userspace_probe_function_attribute_node( |
1863 | attribute_node); | |
c1e83fb4 FD |
1864 | if (!location) { |
1865 | WARN("Error processing userspace probe function attribute"); | |
1866 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1867 | goto end; | |
1868 | } | |
1869 | ||
28ab034a | 1870 | ret = lttng_event_set_userspace_probe_location(event, location); |
c1e83fb4 FD |
1871 | if (ret) { |
1872 | WARN("Error setting userspace probe location field"); | |
28ab034a | 1873 | lttng_userspace_probe_location_destroy(location); |
c1e83fb4 FD |
1874 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1875 | goto end; | |
1876 | } | |
1877 | } else { | |
1878 | /* Unknown event attribute. */ | |
1879 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1880 | goto end; | |
dcf266c0 JG |
1881 | } |
1882 | } | |
1883 | } | |
1884 | ||
91744e14 | 1885 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
28ab034a JG |
1886 | ret = lttng_enable_event_with_exclusions( |
1887 | handle, event, channel_name, filter_expression, exclusion_count, exclusions); | |
d7b645e2 | 1888 | if (ret < 0) { |
91744e14 | 1889 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
1890 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1891 | goto end; | |
1892 | } | |
065321e9 | 1893 | } |
d2e67842 | 1894 | ret = 0; |
dcf266c0 JG |
1895 | end: |
1896 | for (i = 0; i < exclusion_count; i++) { | |
1897 | free(exclusions[i]); | |
1898 | } | |
1899 | ||
b33f872b | 1900 | lttng_event_destroy(event); |
dcf266c0 JG |
1901 | free(exclusions); |
1902 | free(filter_expression); | |
1903 | return ret; | |
1904 | } | |
1905 | ||
28ab034a JG |
1906 | static int |
1907 | process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, const char *channel_name) | |
dcf266c0 JG |
1908 | { |
1909 | int ret = 0; | |
d7b645e2 | 1910 | struct lttng_event event; |
dcf266c0 JG |
1911 | xmlNodePtr node; |
1912 | ||
a0377dfe FD |
1913 | LTTNG_ASSERT(events_node); |
1914 | LTTNG_ASSERT(handle); | |
1915 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1916 | |
28ab034a | 1917 | for (node = xmlFirstElementChild(events_node); node; node = xmlNextElementSibling(node)) { |
d7b645e2 | 1918 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1919 | if (ret) { |
1920 | goto end; | |
1921 | } | |
1922 | } | |
d7b645e2 JR |
1923 | |
1924 | /* | |
1925 | * Disable all events to enable only the necessary events. | |
1926 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1927 | * force this approach. | |
1928 | */ | |
1929 | memset(&event, 0, sizeof(event)); | |
1930 | event.loglevel = -1; | |
1931 | event.type = LTTNG_EVENT_ALL; | |
cd9adb8b | 1932 | ret = lttng_disable_event_ext(handle, &event, channel_name, nullptr); |
d7b645e2 JR |
1933 | if (ret) { |
1934 | goto end; | |
1935 | } | |
1936 | ||
28ab034a | 1937 | for (node = xmlFirstElementChild(events_node); node; node = xmlNextElementSibling(node)) { |
d7b645e2 JR |
1938 | ret = process_event_node(node, handle, channel_name, ENABLE); |
1939 | if (ret) { | |
1940 | goto end; | |
1941 | } | |
1942 | } | |
1943 | ||
dcf266c0 JG |
1944 | end: |
1945 | return ret; | |
1946 | } | |
1947 | ||
28ab034a JG |
1948 | static int process_channel_attr_node(xmlNodePtr attr_node, |
1949 | struct lttng_channel *channel, | |
1950 | xmlNodePtr *contexts_node, | |
1951 | xmlNodePtr *events_node) | |
dcf266c0 JG |
1952 | { |
1953 | int ret; | |
1954 | ||
a0377dfe FD |
1955 | LTTNG_ASSERT(attr_node); |
1956 | LTTNG_ASSERT(channel); | |
1957 | LTTNG_ASSERT(contexts_node); | |
1958 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
1959 | |
1960 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1961 | xmlChar *content; | |
dcf266c0 JG |
1962 | |
1963 | /* name */ | |
1964 | content = xmlNodeGetContent(attr_node); | |
1965 | if (!content) { | |
1966 | ret = -LTTNG_ERR_NOMEM; | |
1967 | goto end; | |
1968 | } | |
1969 | ||
28ab034a | 1970 | ret = lttng_strncpy(channel->name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); |
d2e67842 JG |
1971 | if (ret == -1) { |
1972 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
1973 | (const char *) content, |
1974 | strlen((const char *) content), | |
1975 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1976 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1977 | free(content); | |
1978 | goto end; | |
1979 | } | |
dcf266c0 | 1980 | free(content); |
28ab034a | 1981 | } else if (!strcmp((const char *) attr_node->name, config_element_enabled)) { |
dcf266c0 JG |
1982 | xmlChar *content; |
1983 | int enabled; | |
1984 | ||
1985 | /* enabled */ | |
1986 | content = xmlNodeGetContent(attr_node); | |
1987 | if (!content) { | |
1988 | ret = -LTTNG_ERR_NOMEM; | |
1989 | goto end; | |
1990 | } | |
1991 | ||
1992 | ret = parse_bool(content, &enabled); | |
1993 | free(content); | |
1994 | if (ret) { | |
1995 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1996 | goto end; | |
1997 | } | |
1998 | ||
1999 | channel->enabled = enabled; | |
28ab034a | 2000 | } else if (!strcmp((const char *) attr_node->name, config_element_overwrite_mode)) { |
dcf266c0 JG |
2001 | xmlChar *content; |
2002 | ||
2003 | /* overwrite_mode */ | |
2004 | content = xmlNodeGetContent(attr_node); | |
2005 | if (!content) { | |
2006 | ret = -LTTNG_ERR_NOMEM; | |
2007 | goto end; | |
2008 | } | |
2009 | ||
2010 | ret = get_overwrite_mode(content); | |
2011 | free(content); | |
2012 | if (ret < 0) { | |
2013 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2014 | goto end; | |
2015 | } | |
2016 | ||
2017 | channel->attr.overwrite = ret; | |
28ab034a | 2018 | } else if (!strcmp((const char *) attr_node->name, config_element_subbuf_size)) { |
dcf266c0 JG |
2019 | xmlChar *content; |
2020 | ||
2021 | /* subbuffer_size */ | |
2022 | content = xmlNodeGetContent(attr_node); | |
2023 | if (!content) { | |
2024 | ret = -LTTNG_ERR_NOMEM; | |
2025 | goto end; | |
2026 | } | |
2027 | ||
2028 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2029 | free(content); | |
2030 | if (ret) { | |
2031 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2032 | goto end; | |
2033 | } | |
28ab034a | 2034 | } else if (!strcmp((const char *) attr_node->name, config_element_num_subbuf)) { |
dcf266c0 JG |
2035 | xmlChar *content; |
2036 | ||
2037 | /* subbuffer_count */ | |
2038 | content = xmlNodeGetContent(attr_node); | |
2039 | if (!content) { | |
2040 | ret = -LTTNG_ERR_NOMEM; | |
2041 | goto end; | |
2042 | } | |
2043 | ||
2044 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2045 | free(content); | |
2046 | if (ret) { | |
2047 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2048 | goto end; | |
2049 | } | |
28ab034a | 2050 | } else if (!strcmp((const char *) attr_node->name, config_element_switch_timer_interval)) { |
dcf266c0 JG |
2051 | xmlChar *content; |
2052 | uint64_t switch_timer_interval = 0; | |
2053 | ||
2054 | /* switch_timer_interval */ | |
2055 | content = xmlNodeGetContent(attr_node); | |
2056 | if (!content) { | |
2057 | ret = -LTTNG_ERR_NOMEM; | |
2058 | goto end; | |
2059 | } | |
2060 | ||
2061 | ret = parse_uint(content, &switch_timer_interval); | |
2062 | free(content); | |
2063 | if (ret) { | |
2064 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2065 | goto end; | |
2066 | } | |
2067 | ||
2068 | if (switch_timer_interval > UINT_MAX) { | |
2069 | WARN("switch_timer_interval out of range."); | |
2070 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2071 | goto end; | |
2072 | } | |
2073 | ||
28ab034a JG |
2074 | channel->attr.switch_timer_interval = switch_timer_interval; |
2075 | } else if (!strcmp((const char *) attr_node->name, config_element_read_timer_interval)) { | |
dcf266c0 JG |
2076 | xmlChar *content; |
2077 | uint64_t read_timer_interval = 0; | |
2078 | ||
2079 | /* read_timer_interval */ | |
2080 | content = xmlNodeGetContent(attr_node); | |
2081 | if (!content) { | |
2082 | ret = -LTTNG_ERR_NOMEM; | |
2083 | goto end; | |
2084 | } | |
2085 | ||
2086 | ret = parse_uint(content, &read_timer_interval); | |
2087 | free(content); | |
2088 | if (ret) { | |
2089 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2090 | goto end; | |
2091 | } | |
2092 | ||
2093 | if (read_timer_interval > UINT_MAX) { | |
2094 | WARN("read_timer_interval out of range."); | |
2095 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2096 | goto end; | |
2097 | } | |
2098 | ||
28ab034a JG |
2099 | channel->attr.read_timer_interval = read_timer_interval; |
2100 | } else if (!strcmp((const char *) attr_node->name, config_element_output_type)) { | |
dcf266c0 JG |
2101 | xmlChar *content; |
2102 | ||
2103 | /* output_type */ | |
2104 | content = xmlNodeGetContent(attr_node); | |
2105 | if (!content) { | |
2106 | ret = -LTTNG_ERR_NOMEM; | |
2107 | goto end; | |
2108 | } | |
2109 | ||
2110 | ret = get_output_type(content); | |
2111 | free(content); | |
2112 | if (ret < 0) { | |
2113 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2114 | goto end; | |
2115 | } | |
2116 | ||
3afa94ae | 2117 | channel->attr.output = (lttng_event_output) ret; |
28ab034a | 2118 | } else if (!strcmp((const char *) attr_node->name, config_element_tracefile_size)) { |
dcf266c0 JG |
2119 | xmlChar *content; |
2120 | ||
2121 | /* tracefile_size */ | |
2122 | content = xmlNodeGetContent(attr_node); | |
2123 | if (!content) { | |
2124 | ret = -LTTNG_ERR_NOMEM; | |
2125 | goto end; | |
2126 | } | |
2127 | ||
2128 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2129 | free(content); | |
2130 | if (ret) { | |
2131 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2132 | goto end; | |
2133 | } | |
28ab034a | 2134 | } else if (!strcmp((const char *) attr_node->name, config_element_tracefile_count)) { |
dcf266c0 JG |
2135 | xmlChar *content; |
2136 | ||
2137 | /* tracefile_count */ | |
2138 | content = xmlNodeGetContent(attr_node); | |
2139 | if (!content) { | |
2140 | ret = -LTTNG_ERR_NOMEM; | |
2141 | goto end; | |
2142 | } | |
2143 | ||
2144 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2145 | free(content); | |
2146 | if (ret) { | |
2147 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2148 | goto end; | |
2149 | } | |
28ab034a | 2150 | } else if (!strcmp((const char *) attr_node->name, config_element_live_timer_interval)) { |
dcf266c0 JG |
2151 | xmlChar *content; |
2152 | uint64_t live_timer_interval = 0; | |
2153 | ||
2154 | /* live_timer_interval */ | |
2155 | content = xmlNodeGetContent(attr_node); | |
2156 | if (!content) { | |
2157 | ret = -LTTNG_ERR_NOMEM; | |
2158 | goto end; | |
2159 | } | |
2160 | ||
2161 | ret = parse_uint(content, &live_timer_interval); | |
2162 | free(content); | |
2163 | if (ret) { | |
2164 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2165 | goto end; | |
2166 | } | |
2167 | ||
2168 | if (live_timer_interval > UINT_MAX) { | |
2169 | WARN("live_timer_interval out of range."); | |
2170 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2171 | goto end; | |
2172 | } | |
2173 | ||
28ab034a JG |
2174 | channel->attr.live_timer_interval = live_timer_interval; |
2175 | } else if (!strcmp((const char *) attr_node->name, config_element_monitor_timer_interval)) { | |
4fc2b126 JR |
2176 | xmlChar *content; |
2177 | uint64_t monitor_timer_interval = 0; | |
2178 | ||
2179 | /* monitor_timer_interval */ | |
2180 | content = xmlNodeGetContent(attr_node); | |
2181 | if (!content) { | |
2182 | ret = -LTTNG_ERR_NOMEM; | |
2183 | goto end; | |
2184 | } | |
2185 | ||
2186 | ret = parse_uint(content, &monitor_timer_interval); | |
2187 | free(content); | |
2188 | if (ret) { | |
2189 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2190 | goto end; | |
2191 | } | |
2192 | ||
28ab034a | 2193 | ret = lttng_channel_set_monitor_timer_interval(channel, monitor_timer_interval); |
4fc2b126 JR |
2194 | if (ret) { |
2195 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2196 | goto end; | |
2197 | } | |
28ab034a | 2198 | } else if (!strcmp((const char *) attr_node->name, config_element_blocking_timeout)) { |
275472aa JR |
2199 | xmlChar *content; |
2200 | int64_t blocking_timeout = 0; | |
2201 | ||
2202 | /* blocking_timeout */ | |
2203 | content = xmlNodeGetContent(attr_node); | |
2204 | if (!content) { | |
2205 | ret = -LTTNG_ERR_NOMEM; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
2209 | ret = parse_int(content, &blocking_timeout); | |
2210 | free(content); | |
2211 | if (ret) { | |
2212 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2213 | goto end; | |
2214 | } | |
2215 | ||
28ab034a | 2216 | ret = lttng_channel_set_blocking_timeout(channel, blocking_timeout); |
275472aa JR |
2217 | if (ret) { |
2218 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2219 | goto end; | |
2220 | } | |
28ab034a | 2221 | } else if (!strcmp((const char *) attr_node->name, config_element_events)) { |
dcf266c0 JG |
2222 | /* events */ |
2223 | *events_node = attr_node; | |
2224 | } else { | |
2225 | /* contexts */ | |
2226 | *contexts_node = attr_node; | |
2227 | } | |
2228 | ret = 0; | |
2229 | end: | |
2230 | return ret; | |
2231 | } | |
2232 | ||
28ab034a JG |
2233 | static int |
2234 | process_context_node(xmlNodePtr context_node, struct lttng_handle *handle, const char *channel_name) | |
dcf266c0 JG |
2235 | { |
2236 | int ret; | |
2237 | struct lttng_event_context context; | |
2238 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2239 | ||
a0377dfe FD |
2240 | LTTNG_ASSERT(handle); |
2241 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2242 | |
2243 | if (!context_child_node) { | |
2244 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2245 | goto end; | |
2246 | } | |
2247 | ||
2248 | memset(&context, 0, sizeof(context)); | |
2249 | ||
28ab034a | 2250 | if (!strcmp((const char *) context_child_node->name, config_element_type)) { |
dcf266c0 JG |
2251 | /* type */ |
2252 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2253 | |
dcf266c0 JG |
2254 | if (!content) { |
2255 | ret = -LTTNG_ERR_NOMEM; | |
2256 | goto end; | |
2257 | } | |
2258 | ||
2259 | ret = get_context_type(content); | |
2260 | free(content); | |
2261 | if (ret < 0) { | |
2262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2263 | goto end; | |
2264 | } | |
2265 | ||
3afa94ae | 2266 | context.ctx = (lttng_event_context_type) ret; |
28ab034a | 2267 | } else if (!strcmp((const char *) context_child_node->name, config_element_context_perf)) { |
045fc617 | 2268 | /* perf */ |
dcf266c0 JG |
2269 | xmlNodePtr perf_attr_node; |
2270 | ||
14ce5bd8 JG |
2271 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2272 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2273 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
28ab034a JG |
2274 | for (perf_attr_node = xmlFirstElementChild(context_child_node); perf_attr_node; |
2275 | perf_attr_node = xmlNextElementSibling(perf_attr_node)) { | |
2276 | if (!strcmp((const char *) perf_attr_node->name, config_element_type)) { | |
dcf266c0 JG |
2277 | xmlChar *content; |
2278 | uint64_t type = 0; | |
2279 | ||
2280 | /* type */ | |
2281 | content = xmlNodeGetContent(perf_attr_node); | |
2282 | if (!content) { | |
2283 | ret = -LTTNG_ERR_NOMEM; | |
2284 | goto end; | |
2285 | } | |
2286 | ||
2287 | ret = parse_uint(content, &type); | |
2288 | free(content); | |
2289 | if (ret) { | |
2290 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2291 | goto end; | |
2292 | } | |
2293 | ||
2294 | if (type > UINT32_MAX) { | |
2295 | WARN("perf context type out of range."); | |
2296 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2297 | goto end; | |
2298 | } | |
2299 | ||
2300 | context.u.perf_counter.type = type; | |
2301 | } else if (!strcmp((const char *) perf_attr_node->name, | |
28ab034a | 2302 | config_element_config)) { |
dcf266c0 JG |
2303 | xmlChar *content; |
2304 | uint64_t config = 0; | |
2305 | ||
2306 | /* config */ | |
2307 | content = xmlNodeGetContent(perf_attr_node); | |
2308 | if (!content) { | |
2309 | ret = -LTTNG_ERR_NOMEM; | |
2310 | goto end; | |
2311 | } | |
2312 | ||
2313 | ret = parse_uint(content, &config); | |
2314 | free(content); | |
2315 | if (ret) { | |
2316 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2317 | goto end; | |
2318 | } | |
2319 | ||
2320 | context.u.perf_counter.config = config; | |
2321 | } else if (!strcmp((const char *) perf_attr_node->name, | |
28ab034a | 2322 | config_element_name)) { |
dcf266c0 | 2323 | xmlChar *content; |
dcf266c0 JG |
2324 | |
2325 | /* name */ | |
2326 | content = xmlNodeGetContent(perf_attr_node); | |
2327 | if (!content) { | |
2328 | ret = -LTTNG_ERR_NOMEM; | |
2329 | goto end; | |
2330 | } | |
2331 | ||
d2e67842 | 2332 | ret = lttng_strncpy(context.u.perf_counter.name, |
28ab034a JG |
2333 | (const char *) content, |
2334 | LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 JG |
2335 | if (ret == -1) { |
2336 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
2337 | (const char *) content, |
2338 | strlen((const char *) content), | |
2339 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2340 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2341 | free(content); | |
2342 | goto end; | |
2343 | } | |
dcf266c0 JG |
2344 | free(content); |
2345 | } | |
2346 | } | |
28ab034a | 2347 | } else if (!strcmp((const char *) context_child_node->name, config_element_context_app)) { |
045fc617 JG |
2348 | /* application context */ |
2349 | xmlNodePtr app_ctx_node; | |
2350 | ||
2351 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
28ab034a JG |
2352 | for (app_ctx_node = xmlFirstElementChild(context_child_node); app_ctx_node; |
2353 | app_ctx_node = xmlNextElementSibling(app_ctx_node)) { | |
045fc617 | 2354 | xmlChar *content; |
28ab034a JG |
2355 | char **target = strcmp((const char *) app_ctx_node->name, |
2356 | config_element_context_app_provider_name) == 0 ? | |
2357 | &context.u.app_ctx.provider_name : | |
2358 | &context.u.app_ctx.ctx_name; | |
045fc617 JG |
2359 | |
2360 | content = xmlNodeGetContent(app_ctx_node); | |
2361 | if (!content) { | |
2362 | ret = -LTTNG_ERR_NOMEM; | |
2363 | goto end; | |
2364 | } | |
2365 | ||
2366 | *target = (char *) content; | |
2367 | } | |
2368 | } else { | |
2369 | /* Unrecognized context type */ | |
2370 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2371 | goto end; | |
dcf266c0 JG |
2372 | } |
2373 | ||
cd9adb8b | 2374 | ret = lttng_add_context(handle, &context, nullptr, channel_name); |
045fc617 JG |
2375 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2376 | free(context.u.app_ctx.provider_name); | |
2377 | free(context.u.app_ctx.ctx_name); | |
2378 | } | |
dcf266c0 JG |
2379 | end: |
2380 | return ret; | |
2381 | } | |
2382 | ||
28ab034a JG |
2383 | static int process_contexts_node(xmlNodePtr contexts_node, |
2384 | struct lttng_handle *handle, | |
2385 | const char *channel_name) | |
dcf266c0 JG |
2386 | { |
2387 | int ret = 0; | |
2388 | xmlNodePtr context_node; | |
2389 | ||
2390 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
28ab034a | 2391 | context_node = xmlNextElementSibling(context_node)) { |
dcf266c0 JG |
2392 | ret = process_context_node(context_node, handle, channel_name); |
2393 | if (ret) { | |
2394 | goto end; | |
2395 | } | |
2396 | } | |
2397 | end: | |
2398 | return ret; | |
2399 | } | |
2400 | ||
159b042f | 2401 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
28ab034a JG |
2402 | const char **element_id_tracker, |
2403 | const char **element_value_type, | |
2404 | const char **element_value, | |
2405 | const char **element_value_alias, | |
2406 | const char **element_name) | |
55c9e7ca JR |
2407 | { |
2408 | int ret = 0; | |
2409 | ||
159b042f JG |
2410 | switch (process_attr) { |
2411 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2412 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2413 | *element_value_type = config_element_process_attr_pid_value; | |
2414 | *element_value = config_element_process_attr_id; | |
2415 | *element_value_alias = config_element_process_attr_id; | |
cd9adb8b | 2416 | *element_name = nullptr; |
55c9e7ca | 2417 | break; |
159b042f JG |
2418 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2419 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2420 | *element_value_type = config_element_process_attr_vpid_value; | |
2421 | *element_value = config_element_process_attr_id; | |
cd9adb8b JG |
2422 | *element_value_alias = nullptr; |
2423 | *element_name = nullptr; | |
55c9e7ca | 2424 | break; |
159b042f JG |
2425 | case LTTNG_PROCESS_ATTR_USER_ID: |
2426 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2427 | *element_value_type = config_element_process_attr_uid_value; | |
2428 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2429 | *element_value_alias = nullptr; |
55c9e7ca JR |
2430 | *element_name = config_element_name; |
2431 | break; | |
159b042f JG |
2432 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2433 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2434 | *element_value_type = config_element_process_attr_vuid_value; | |
2435 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2436 | *element_value_alias = nullptr; |
55c9e7ca JR |
2437 | *element_name = config_element_name; |
2438 | break; | |
159b042f JG |
2439 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2440 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2441 | *element_value_type = config_element_process_attr_gid_value; | |
2442 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2443 | *element_value_alias = nullptr; |
55c9e7ca JR |
2444 | *element_name = config_element_name; |
2445 | break; | |
159b042f JG |
2446 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2447 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2448 | *element_value_type = config_element_process_attr_vgid_value; | |
2449 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2450 | *element_value_alias = nullptr; |
55c9e7ca JR |
2451 | *element_name = config_element_name; |
2452 | break; | |
2453 | default: | |
2454 | ret = LTTNG_ERR_INVALID; | |
2455 | } | |
2456 | return ret; | |
2457 | } | |
2458 | ||
28ab034a | 2459 | static int process_legacy_pid_tracker_node(xmlNodePtr trackers_node, struct lttng_handle *handle) |
f7af9a72 JG |
2460 | { |
2461 | int ret = 0, child_count; | |
cd9adb8b | 2462 | xmlNodePtr targets_node = nullptr; |
f7af9a72 JG |
2463 | xmlNodePtr node; |
2464 | const char *element_id_tracker; | |
2465 | const char *element_target_id; | |
2466 | const char *element_id; | |
2467 | const char *element_id_alias; | |
2468 | const char *element_name; | |
2469 | enum lttng_error_code tracker_handle_ret_code; | |
cd9adb8b | 2470 | struct lttng_process_attr_tracker_handle *tracker_handle = nullptr; |
f7af9a72 | 2471 | enum lttng_process_attr_tracker_handle_status status; |
28ab034a JG |
2472 | const enum lttng_process_attr process_attr = handle->domain.type == LTTNG_DOMAIN_UST ? |
2473 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2474 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
f7af9a72 | 2475 | |
a0377dfe | 2476 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2477 | |
2478 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
28ab034a | 2479 | handle->session_name, handle->domain.type, process_attr, &tracker_handle); |
f7af9a72 JG |
2480 | if (tracker_handle_ret_code != LTTNG_OK) { |
2481 | ret = LTTNG_ERR_INVALID; | |
2482 | goto end; | |
2483 | } | |
2484 | ||
28ab034a JG |
2485 | ret = get_tracker_elements(process_attr, |
2486 | &element_id_tracker, | |
2487 | &element_target_id, | |
2488 | &element_id, | |
2489 | &element_id_alias, | |
2490 | &element_name); | |
f7af9a72 JG |
2491 | if (ret) { |
2492 | goto end; | |
2493 | } | |
2494 | ||
2495 | /* Get the targets node */ | |
28ab034a JG |
2496 | for (node = xmlFirstElementChild(trackers_node); node; node = xmlNextElementSibling(node)) { |
2497 | if (!strcmp((const char *) node->name, config_element_tracker_targets_legacy)) { | |
f7af9a72 JG |
2498 | targets_node = node; |
2499 | break; | |
2500 | } | |
3afa94ae | 2501 | } |
f7af9a72 JG |
2502 | |
2503 | if (!targets_node) { | |
2504 | ret = LTTNG_ERR_INVALID; | |
2505 | goto end; | |
2506 | } | |
2507 | ||
2508 | /* Go through all id target node */ | |
2509 | child_count = xmlChildElementCount(targets_node); | |
2510 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
28ab034a JG |
2511 | tracker_handle, |
2512 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2513 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
f7af9a72 JG |
2514 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { |
2515 | ret = LTTNG_ERR_UNK; | |
2516 | goto end; | |
2517 | } | |
2518 | ||
2519 | /* Add all tracked values. */ | |
28ab034a | 2520 | for (node = xmlFirstElementChild(targets_node); node; node = xmlNextElementSibling(node)) { |
f7af9a72 JG |
2521 | xmlNodePtr pid_target_node = node; |
2522 | ||
2523 | /* get pid_target node and track it */ | |
2524 | for (node = xmlFirstElementChild(pid_target_node); node; | |
28ab034a JG |
2525 | node = xmlNextElementSibling(node)) { |
2526 | if (!strcmp((const char *) node->name, config_element_tracker_pid_legacy)) { | |
f7af9a72 JG |
2527 | int64_t id; |
2528 | xmlChar *content = xmlNodeGetContent(node); | |
2529 | ||
2530 | if (!content) { | |
2531 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2532 | goto end; | |
2533 | } | |
2534 | ||
2535 | ret = parse_int(content, &id); | |
2536 | free(content); | |
2537 | if (ret) { | |
2538 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2539 | goto end; | |
2540 | } | |
2541 | ||
2542 | switch (process_attr) { | |
2543 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
28ab034a JG |
2544 | status = |
2545 | lttng_process_attr_process_id_tracker_handle_add_pid( | |
2546 | tracker_handle, (pid_t) id); | |
f7af9a72 JG |
2547 | break; |
2548 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
28ab034a JG |
2549 | status = |
2550 | lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2551 | tracker_handle, (pid_t) id); | |
f7af9a72 JG |
2552 | break; |
2553 | default: | |
2554 | ret = LTTNG_ERR_INVALID; | |
2555 | goto end; | |
2556 | } | |
2557 | } | |
2558 | switch (status) { | |
2559 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2560 | continue; | |
2561 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2562 | ret = LTTNG_ERR_INVALID; | |
2563 | break; | |
2564 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2565 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2566 | break; | |
2567 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2568 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2569 | break; | |
2570 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2571 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2572 | default: | |
2573 | ret = LTTNG_ERR_UNK; | |
2574 | goto end; | |
2575 | } | |
2576 | } | |
2577 | node = pid_target_node; | |
2578 | } | |
2579 | ||
2580 | end: | |
2581 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2582 | return ret; | |
28ab034a | 2583 | } |
f7af9a72 | 2584 | |
55c9e7ca | 2585 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
28ab034a JG |
2586 | struct lttng_handle *handle, |
2587 | enum lttng_process_attr process_attr) | |
847a5916 | 2588 | { |
159b042f | 2589 | int ret = 0, child_count; |
cd9adb8b | 2590 | xmlNodePtr values_node = nullptr; |
847a5916 | 2591 | xmlNodePtr node; |
55c9e7ca JR |
2592 | const char *element_id_tracker; |
2593 | const char *element_target_id; | |
2594 | const char *element_id; | |
2595 | const char *element_id_alias; | |
2596 | const char *element_name; | |
159b042f | 2597 | enum lttng_error_code tracker_handle_ret_code; |
cd9adb8b | 2598 | struct lttng_process_attr_tracker_handle *tracker_handle = nullptr; |
159b042f | 2599 | enum lttng_process_attr_tracker_handle_status status; |
847a5916 | 2600 | |
a0377dfe FD |
2601 | LTTNG_ASSERT(handle); |
2602 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2603 | |
159b042f | 2604 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
28ab034a | 2605 | handle->session_name, handle->domain.type, process_attr, &tracker_handle); |
159b042f JG |
2606 | if (tracker_handle_ret_code != LTTNG_OK) { |
2607 | ret = LTTNG_ERR_INVALID; | |
2608 | goto end; | |
2609 | } | |
2610 | ||
28ab034a JG |
2611 | ret = get_tracker_elements(process_attr, |
2612 | &element_id_tracker, | |
2613 | &element_target_id, | |
2614 | &element_id, | |
2615 | &element_id_alias, | |
2616 | &element_name); | |
55c9e7ca | 2617 | if (ret) { |
159b042f | 2618 | goto end; |
55c9e7ca JR |
2619 | } |
2620 | ||
f7af9a72 | 2621 | /* get the values node */ |
55c9e7ca | 2622 | for (node = xmlFirstElementChild(id_tracker_node); node; |
28ab034a JG |
2623 | node = xmlNextElementSibling(node)) { |
2624 | if (!strcmp((const char *) node->name, config_element_process_attr_values)) { | |
f7af9a72 | 2625 | values_node = node; |
847a5916 JR |
2626 | break; |
2627 | } | |
2628 | } | |
2629 | ||
f7af9a72 | 2630 | if (!values_node) { |
847a5916 JR |
2631 | ret = LTTNG_ERR_INVALID; |
2632 | goto end; | |
2633 | } | |
2634 | ||
55c9e7ca | 2635 | /* Go through all id target node */ |
f7af9a72 | 2636 | child_count = xmlChildElementCount(values_node); |
159b042f | 2637 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
28ab034a JG |
2638 | tracker_handle, |
2639 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2640 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
159b042f JG |
2641 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { |
2642 | ret = LTTNG_ERR_UNK; | |
2643 | goto end; | |
847a5916 | 2644 | } |
159b042f JG |
2645 | |
2646 | /* Add all tracked values. */ | |
28ab034a | 2647 | for (node = xmlFirstElementChild(values_node); node; node = xmlNextElementSibling(node)) { |
55c9e7ca | 2648 | xmlNodePtr id_target_node = node; |
847a5916 | 2649 | |
55c9e7ca JR |
2650 | /* get id node and track it */ |
2651 | for (node = xmlFirstElementChild(id_target_node); node; | |
28ab034a | 2652 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2653 | if (!strcmp((const char *) node->name, element_id) || |
28ab034a JG |
2654 | (element_id_alias && |
2655 | !strcmp((const char *) node->name, element_id_alias))) { | |
55c9e7ca | 2656 | int64_t id; |
159b042f | 2657 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2658 | |
847a5916 JR |
2659 | if (!content) { |
2660 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2661 | goto end; | |
2662 | } | |
2663 | ||
55c9e7ca | 2664 | ret = parse_int(content, &id); |
847a5916 JR |
2665 | free(content); |
2666 | if (ret) { | |
2667 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2668 | goto end; | |
2669 | } | |
2670 | ||
159b042f JG |
2671 | switch (process_attr) { |
2672 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
28ab034a JG |
2673 | status = |
2674 | lttng_process_attr_process_id_tracker_handle_add_pid( | |
2675 | tracker_handle, (pid_t) id); | |
159b042f JG |
2676 | break; |
2677 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
28ab034a JG |
2678 | status = |
2679 | lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2680 | tracker_handle, (pid_t) id); | |
159b042f JG |
2681 | break; |
2682 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2683 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
28ab034a | 2684 | tracker_handle, (uid_t) id); |
159b042f JG |
2685 | break; |
2686 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
28ab034a JG |
2687 | status = |
2688 | lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2689 | tracker_handle, (uid_t) id); | |
159b042f JG |
2690 | break; |
2691 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2692 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
28ab034a | 2693 | tracker_handle, (gid_t) id); |
159b042f JG |
2694 | break; |
2695 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
28ab034a JG |
2696 | status = |
2697 | lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2698 | tracker_handle, (gid_t) id); | |
159b042f JG |
2699 | break; |
2700 | default: | |
2701 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2702 | goto end; |
2703 | } | |
159b042f | 2704 | } else if (element_name && |
28ab034a | 2705 | !strcmp((const char *) node->name, element_name)) { |
159b042f | 2706 | xmlChar *content = xmlNodeGetContent(node); |
55c9e7ca | 2707 | |
55c9e7ca JR |
2708 | if (!content) { |
2709 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2710 | goto end; | |
2711 | } | |
2d97a006 | 2712 | |
159b042f JG |
2713 | switch (process_attr) { |
2714 | case LTTNG_PROCESS_ATTR_USER_ID: | |
28ab034a JG |
2715 | status = |
2716 | lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2717 | tracker_handle, (const char *) content); | |
159b042f JG |
2718 | break; |
2719 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
28ab034a JG |
2720 | status = |
2721 | lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2722 | tracker_handle, (const char *) content); | |
159b042f JG |
2723 | break; |
2724 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
28ab034a JG |
2725 | status = |
2726 | lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2727 | tracker_handle, (const char *) content); | |
159b042f JG |
2728 | break; |
2729 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
28ab034a JG |
2730 | status = |
2731 | lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2732 | tracker_handle, (const char *) content); | |
159b042f JG |
2733 | break; |
2734 | default: | |
2735 | free(content); | |
2736 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2737 | goto end; |
2738 | } | |
55c9e7ca | 2739 | free(content); |
159b042f JG |
2740 | } |
2741 | switch (status) { | |
2742 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2743 | continue; | |
2744 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2745 | ret = LTTNG_ERR_INVALID; | |
2746 | break; | |
2747 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2748 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2749 | break; | |
2750 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2751 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2752 | break; | |
2753 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2754 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2755 | default: | |
2756 | ret = LTTNG_ERR_UNK; | |
2757 | goto end; | |
847a5916 JR |
2758 | } |
2759 | } | |
55c9e7ca | 2760 | node = id_target_node; |
847a5916 JR |
2761 | } |
2762 | ||
2763 | end: | |
159b042f | 2764 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2765 | return ret; |
2766 | } | |
2767 | ||
28ab034a | 2768 | static int process_domain_node(xmlNodePtr domain_node, const char *session_name) |
dcf266c0 JG |
2769 | { |
2770 | int ret; | |
3afa94ae | 2771 | struct lttng_domain domain {}; |
cd9adb8b JG |
2772 | struct lttng_handle *handle = nullptr; |
2773 | struct lttng_channel *channel = nullptr; | |
2774 | xmlNodePtr channels_node = nullptr; | |
2775 | xmlNodePtr trackers_node = nullptr; | |
2776 | xmlNodePtr pid_tracker_node = nullptr; | |
2777 | xmlNodePtr vpid_tracker_node = nullptr; | |
2778 | xmlNodePtr uid_tracker_node = nullptr; | |
2779 | xmlNodePtr vuid_tracker_node = nullptr; | |
2780 | xmlNodePtr gid_tracker_node = nullptr; | |
2781 | xmlNodePtr vgid_tracker_node = nullptr; | |
dcf266c0 JG |
2782 | xmlNodePtr node; |
2783 | ||
a0377dfe | 2784 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2785 | |
2786 | ret = init_domain(domain_node, &domain); | |
2787 | if (ret) { | |
2788 | goto end; | |
2789 | } | |
2790 | ||
2791 | handle = lttng_create_handle(session_name, &domain); | |
2792 | if (!handle) { | |
2793 | ret = -LTTNG_ERR_NOMEM; | |
2794 | goto end; | |
2795 | } | |
2796 | ||
2797 | /* get the channels node */ | |
28ab034a JG |
2798 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
2799 | if (!strcmp((const char *) node->name, config_element_channels)) { | |
dcf266c0 JG |
2800 | channels_node = node; |
2801 | break; | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | if (!channels_node) { | |
2806 | goto end; | |
2807 | } | |
2808 | ||
2809 | /* create all channels */ | |
28ab034a | 2810 | for (node = xmlFirstElementChild(channels_node); node; node = xmlNextElementSibling(node)) { |
36d1687c | 2811 | const enum lttng_domain_type original_domain = domain.type; |
cd9adb8b JG |
2812 | xmlNodePtr contexts_node = nullptr; |
2813 | xmlNodePtr events_node = nullptr; | |
dcf266c0 JG |
2814 | xmlNodePtr channel_attr_node; |
2815 | ||
36d1687c JG |
2816 | /* |
2817 | * Channels of the "agent" types cannot be created directly. | |
2818 | * They are meant to be created implicitly through the | |
2819 | * activation of events in their domain. However, a user | |
2820 | * can override the default channel configuration attributes | |
2821 | * by creating the underlying UST channel _before_ enabling | |
2822 | * an agent domain event. | |
2823 | * | |
2824 | * Hence, the channel's type is substituted before the creation | |
2825 | * and restored by the time the events are created. | |
2826 | */ | |
2827 | switch (domain.type) { | |
2828 | case LTTNG_DOMAIN_JUL: | |
2829 | case LTTNG_DOMAIN_LOG4J: | |
47abf22b | 2830 | case LTTNG_DOMAIN_LOG4J2: |
36d1687c JG |
2831 | case LTTNG_DOMAIN_PYTHON: |
2832 | domain.type = LTTNG_DOMAIN_UST; | |
2833 | default: | |
2834 | break; | |
2835 | } | |
2836 | ||
4fc2b126 JR |
2837 | channel = lttng_channel_create(&domain); |
2838 | if (!channel) { | |
2839 | ret = -1; | |
2840 | goto end; | |
2841 | } | |
dcf266c0 | 2842 | |
28ab034a JG |
2843 | for (channel_attr_node = xmlFirstElementChild(node); channel_attr_node; |
2844 | channel_attr_node = xmlNextElementSibling(channel_attr_node)) { | |
2845 | ret = process_channel_attr_node( | |
2846 | channel_attr_node, channel, &contexts_node, &events_node); | |
dcf266c0 JG |
2847 | if (ret) { |
2848 | goto end; | |
2849 | } | |
2850 | } | |
2851 | ||
4fc2b126 | 2852 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2853 | if (ret < 0) { |
2854 | goto end; | |
2855 | } | |
2856 | ||
36d1687c JG |
2857 | /* Restore the original channel domain. */ |
2858 | domain.type = original_domain; | |
2859 | ||
4fc2b126 | 2860 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2861 | if (ret) { |
2862 | goto end; | |
2863 | } | |
2864 | ||
28ab034a | 2865 | ret = process_contexts_node(contexts_node, handle, channel->name); |
dcf266c0 JG |
2866 | if (ret) { |
2867 | goto end; | |
2868 | } | |
4fc2b126 JR |
2869 | |
2870 | lttng_channel_destroy(channel); | |
dcf266c0 | 2871 | } |
cd9adb8b | 2872 | channel = nullptr; |
847a5916 JR |
2873 | |
2874 | /* get the trackers node */ | |
28ab034a JG |
2875 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
2876 | if (!strcmp((const char *) node->name, config_element_process_attr_trackers) || | |
2877 | !strcmp((const char *) node->name, config_element_trackers_legacy)) { | |
f7af9a72 JG |
2878 | if (trackers_node) { |
2879 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
28ab034a JG |
2880 | config_element_process_attr_trackers, |
2881 | config_element_trackers_legacy); | |
f7af9a72 JG |
2882 | ret = -1; |
2883 | goto end; | |
2884 | } | |
847a5916 JR |
2885 | trackers_node = node; |
2886 | break; | |
2887 | } | |
2888 | } | |
2889 | ||
2890 | if (!trackers_node) { | |
2891 | goto end; | |
2892 | } | |
2893 | ||
28ab034a JG |
2894 | for (node = xmlFirstElementChild(trackers_node); node; node = xmlNextElementSibling(node)) { |
2895 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_pid)) { | |
847a5916 | 2896 | pid_tracker_node = node; |
28ab034a JG |
2897 | ret = process_id_tracker_node( |
2898 | pid_tracker_node, handle, LTTNG_PROCESS_ATTR_PROCESS_ID); | |
55c9e7ca JR |
2899 | if (ret) { |
2900 | goto end; | |
2901 | } | |
2902 | } | |
28ab034a | 2903 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vpid)) { |
55c9e7ca | 2904 | vpid_tracker_node = node; |
28ab034a JG |
2905 | ret = process_id_tracker_node( |
2906 | vpid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
55c9e7ca JR |
2907 | if (ret) { |
2908 | goto end; | |
2909 | } | |
2910 | } | |
28ab034a | 2911 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_uid)) { |
55c9e7ca | 2912 | uid_tracker_node = node; |
28ab034a JG |
2913 | ret = process_id_tracker_node( |
2914 | uid_tracker_node, handle, LTTNG_PROCESS_ATTR_USER_ID); | |
55c9e7ca JR |
2915 | if (ret) { |
2916 | goto end; | |
2917 | } | |
2918 | } | |
28ab034a | 2919 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vuid)) { |
55c9e7ca | 2920 | vuid_tracker_node = node; |
28ab034a JG |
2921 | ret = process_id_tracker_node( |
2922 | vuid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
55c9e7ca JR |
2923 | if (ret) { |
2924 | goto end; | |
2925 | } | |
2926 | } | |
28ab034a | 2927 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_gid)) { |
55c9e7ca | 2928 | gid_tracker_node = node; |
28ab034a JG |
2929 | ret = process_id_tracker_node( |
2930 | gid_tracker_node, handle, LTTNG_PROCESS_ATTR_GROUP_ID); | |
55c9e7ca JR |
2931 | if (ret) { |
2932 | goto end; | |
2933 | } | |
2934 | } | |
28ab034a | 2935 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vgid)) { |
55c9e7ca | 2936 | vgid_tracker_node = node; |
28ab034a JG |
2937 | ret = process_id_tracker_node( |
2938 | vgid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
847a5916 JR |
2939 | if (ret) { |
2940 | goto end; | |
2941 | } | |
2942 | } | |
28ab034a | 2943 | if (!strcmp((const char *) node->name, config_element_pid_tracker_legacy)) { |
f7af9a72 JG |
2944 | ret = process_legacy_pid_tracker_node(node, handle); |
2945 | if (ret) { | |
2946 | goto end; | |
2947 | } | |
2948 | } | |
847a5916 JR |
2949 | } |
2950 | ||
dcf266c0 | 2951 | end: |
4fc2b126 | 2952 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2953 | lttng_destroy_handle(handle); |
2954 | return ret; | |
2955 | } | |
2956 | ||
28ab034a | 2957 | static int add_periodic_rotation(const char *name, uint64_t time_us) |
66ea93b1 JG |
2958 | { |
2959 | int ret; | |
2960 | enum lttng_rotation_status status; | |
28ab034a | 2961 | struct lttng_rotation_schedule *periodic = lttng_rotation_schedule_periodic_create(); |
66ea93b1 JG |
2962 | |
2963 | if (!periodic) { | |
2964 | ret = -LTTNG_ERR_NOMEM; | |
2965 | goto error; | |
2966 | } | |
2967 | ||
28ab034a | 2968 | status = lttng_rotation_schedule_periodic_set_period(periodic, time_us); |
66ea93b1 JG |
2969 | if (status != LTTNG_ROTATION_STATUS_OK) { |
2970 | ret = -LTTNG_ERR_INVALID; | |
2971 | goto error; | |
2972 | } | |
2973 | ||
2974 | status = lttng_session_add_rotation_schedule(name, periodic); | |
2975 | switch (status) { | |
2976 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 2977 | ret = 0; |
66ea93b1 JG |
2978 | break; |
2979 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2980 | case LTTNG_ROTATION_STATUS_INVALID: | |
2981 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2982 | break; | |
2983 | default: | |
2984 | ret = -LTTNG_ERR_UNK; | |
2985 | break; | |
2986 | } | |
2987 | error: | |
2988 | lttng_rotation_schedule_destroy(periodic); | |
2989 | return ret; | |
2990 | } | |
2991 | ||
28ab034a | 2992 | static int add_size_rotation(const char *name, uint64_t size_bytes) |
66ea93b1 JG |
2993 | { |
2994 | int ret; | |
2995 | enum lttng_rotation_status status; | |
28ab034a | 2996 | struct lttng_rotation_schedule *size = lttng_rotation_schedule_size_threshold_create(); |
66ea93b1 JG |
2997 | |
2998 | if (!size) { | |
2999 | ret = -LTTNG_ERR_NOMEM; | |
3000 | goto error; | |
3001 | } | |
3002 | ||
28ab034a | 3003 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, size_bytes); |
66ea93b1 JG |
3004 | if (status != LTTNG_ROTATION_STATUS_OK) { |
3005 | ret = -LTTNG_ERR_INVALID; | |
3006 | goto error; | |
3007 | } | |
3008 | ||
3009 | status = lttng_session_add_rotation_schedule(name, size); | |
3010 | switch (status) { | |
3011 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3012 | ret = 0; |
66ea93b1 JG |
3013 | break; |
3014 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3015 | case LTTNG_ROTATION_STATUS_INVALID: | |
3016 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3017 | break; | |
3018 | default: | |
3019 | ret = -LTTNG_ERR_UNK; | |
3020 | break; | |
3021 | } | |
3022 | error: | |
3023 | lttng_rotation_schedule_destroy(size); | |
3024 | return ret; | |
3025 | } | |
3026 | ||
28ab034a JG |
3027 | static int process_session_rotation_schedules_node(xmlNodePtr schedules_node, |
3028 | uint64_t *rotation_timer_interval, | |
3029 | uint64_t *rotation_size) | |
ce6176f2 JG |
3030 | { |
3031 | int ret = 0; | |
3032 | xmlNodePtr child; | |
3033 | ||
28ab034a JG |
3034 | for (child = xmlFirstElementChild(schedules_node); child; |
3035 | child = xmlNextElementSibling(child)) { | |
ce6176f2 | 3036 | if (!strcmp((const char *) child->name, |
28ab034a | 3037 | config_element_rotation_schedule_periodic)) { |
ce6176f2 JG |
3038 | xmlChar *content; |
3039 | xmlNodePtr time_us_node; | |
3040 | ||
3041 | /* periodic rotation schedule */ | |
3042 | time_us_node = xmlFirstElementChild(child); | |
3043 | if (!time_us_node || | |
28ab034a | 3044 | strcmp((const char *) time_us_node->name, |
5c7248cd | 3045 | config_element_rotation_schedule_periodic_time_us) != 0) { |
ce6176f2 JG |
3046 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
3047 | goto end; | |
3048 | } | |
3049 | ||
3050 | /* time_us child */ | |
3051 | content = xmlNodeGetContent(time_us_node); | |
3052 | if (!content) { | |
3053 | ret = -LTTNG_ERR_NOMEM; | |
3054 | goto end; | |
3055 | } | |
3056 | ret = parse_uint(content, rotation_timer_interval); | |
3057 | free(content); | |
3058 | if (ret) { | |
3059 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3060 | goto end; | |
3061 | } | |
3062 | } else if (!strcmp((const char *) child->name, | |
28ab034a | 3063 | config_element_rotation_schedule_size_threshold)) { |
ce6176f2 JG |
3064 | xmlChar *content; |
3065 | xmlNodePtr bytes_node; | |
3066 | ||
3067 | /* size_threshold rotation schedule */ | |
3068 | bytes_node = xmlFirstElementChild(child); | |
3069 | if (!bytes_node || | |
28ab034a | 3070 | strcmp((const char *) bytes_node->name, |
5c7248cd | 3071 | config_element_rotation_schedule_size_threshold_bytes) != 0) { |
ce6176f2 JG |
3072 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
3073 | goto end; | |
3074 | } | |
3075 | ||
3076 | /* bytes child */ | |
3077 | content = xmlNodeGetContent(bytes_node); | |
3078 | if (!content) { | |
3079 | ret = -LTTNG_ERR_NOMEM; | |
3080 | goto end; | |
3081 | } | |
3082 | ret = parse_uint(content, rotation_size); | |
3083 | free(content); | |
3084 | if (ret) { | |
3085 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3086 | goto end; | |
3087 | } | |
3088 | } | |
3089 | } | |
3090 | ||
3091 | end: | |
3092 | return ret; | |
3093 | } | |
3094 | ||
28ab034a JG |
3095 | static int process_session_node(xmlNodePtr session_node, |
3096 | const char *session_name, | |
3097 | int overwrite, | |
3098 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3099 | { |
3100 | int ret, started = -1, snapshot_mode = -1; | |
28ab034a | 3101 | uint64_t live_timer_interval = UINT64_MAX, rotation_timer_interval = 0, rotation_size = 0; |
cd9adb8b JG |
3102 | xmlChar *name = nullptr; |
3103 | xmlChar *shm_path = nullptr; | |
3104 | xmlNodePtr domains_node = nullptr; | |
3105 | xmlNodePtr output_node = nullptr; | |
dcf266c0 | 3106 | xmlNodePtr node; |
90936dcf | 3107 | xmlNodePtr attributes_child; |
cd9adb8b JG |
3108 | struct lttng_domain *kernel_domain = nullptr; |
3109 | struct lttng_domain *ust_domain = nullptr; | |
3110 | struct lttng_domain *jul_domain = nullptr; | |
3111 | struct lttng_domain *log4j_domain = nullptr; | |
47abf22b | 3112 | struct lttng_domain *log4j2_domain = nullptr; |
cd9adb8b | 3113 | struct lttng_domain *python_domain = nullptr; |
dcf266c0 | 3114 | |
28ab034a JG |
3115 | for (node = xmlFirstElementChild(session_node); node; node = xmlNextElementSibling(node)) { |
3116 | if (!name && !strcmp((const char *) node->name, config_element_name)) { | |
dcf266c0 JG |
3117 | /* name */ |
3118 | xmlChar *node_content = xmlNodeGetContent(node); | |
3119 | if (!node_content) { | |
3120 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3121 | goto error; |
dcf266c0 JG |
3122 | } |
3123 | ||
d324faf7 | 3124 | name = node_content; |
28ab034a JG |
3125 | } else if (!domains_node && |
3126 | !strcmp((const char *) node->name, config_element_domains)) { | |
dcf266c0 JG |
3127 | /* domains */ |
3128 | domains_node = node; | |
28ab034a JG |
3129 | } else if (started == -1 && |
3130 | !strcmp((const char *) node->name, config_element_started)) { | |
dcf266c0 JG |
3131 | /* started */ |
3132 | xmlChar *node_content = xmlNodeGetContent(node); | |
3133 | if (!node_content) { | |
3134 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3135 | goto error; |
dcf266c0 JG |
3136 | } |
3137 | ||
3138 | ret = parse_bool(node_content, &started); | |
3139 | free(node_content); | |
3140 | if (ret) { | |
3141 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3142 | goto error; |
dcf266c0 | 3143 | } |
28ab034a JG |
3144 | } else if (!output_node && |
3145 | !strcmp((const char *) node->name, config_element_output)) { | |
dcf266c0 JG |
3146 | /* output */ |
3147 | output_node = node; | |
28ab034a JG |
3148 | } else if (!shm_path && |
3149 | !strcmp((const char *) node->name, config_element_shared_memory_path)) { | |
9e7c9f56 JR |
3150 | /* shared memory path */ |
3151 | xmlChar *node_content = xmlNodeGetContent(node); | |
3152 | if (!node_content) { | |
3153 | ret = -LTTNG_ERR_NOMEM; | |
3154 | goto error; | |
3155 | } | |
3156 | ||
3157 | shm_path = node_content; | |
dcf266c0 | 3158 | } else { |
259c2674 JD |
3159 | /* |
3160 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3161 | * rotation_timer_interval. |
3162 | */ | |
3163 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
28ab034a | 3164 | attributes_child = xmlNextElementSibling(attributes_child)) { |
90936dcf | 3165 | if (!strcmp((const char *) attributes_child->name, |
28ab034a | 3166 | config_element_snapshot_mode)) { |
90936dcf JD |
3167 | /* snapshot_mode */ |
3168 | xmlChar *snapshot_mode_content = | |
3169 | xmlNodeGetContent(attributes_child); | |
3170 | if (!snapshot_mode_content) { | |
3171 | ret = -LTTNG_ERR_NOMEM; | |
3172 | goto error; | |
3173 | } | |
dcf266c0 | 3174 | |
90936dcf JD |
3175 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3176 | free(snapshot_mode_content); | |
3177 | if (ret) { | |
3178 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3179 | goto error; | |
3180 | } | |
3181 | } else if (!strcmp((const char *) attributes_child->name, | |
28ab034a | 3182 | config_element_live_timer_interval)) { |
90936dcf JD |
3183 | /* live_timer_interval */ |
3184 | xmlChar *timer_interval_content = | |
3185 | xmlNodeGetContent(attributes_child); | |
3186 | if (!timer_interval_content) { | |
3187 | ret = -LTTNG_ERR_NOMEM; | |
3188 | goto error; | |
3189 | } | |
dcf266c0 | 3190 | |
28ab034a JG |
3191 | ret = parse_uint(timer_interval_content, |
3192 | &live_timer_interval); | |
90936dcf JD |
3193 | free(timer_interval_content); |
3194 | if (ret) { | |
3195 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3196 | goto error; | |
3197 | } | |
ce6176f2 | 3198 | } else if (!strcmp((const char *) attributes_child->name, |
28ab034a | 3199 | config_element_rotation_schedules)) { |
ce6176f2 | 3200 | ret = process_session_rotation_schedules_node( |
28ab034a JG |
3201 | attributes_child, |
3202 | &rotation_timer_interval, | |
3203 | &rotation_size); | |
90936dcf JD |
3204 | if (ret) { |
3205 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3206 | goto error; | |
3207 | } | |
259c2674 JD |
3208 | } |
3209 | } | |
dcf266c0 JG |
3210 | } |
3211 | } | |
3212 | ||
3213 | if (!name) { | |
3214 | /* Mandatory attribute, as defined in the session XSD */ | |
3215 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3216 | goto error; |
dcf266c0 JG |
3217 | } |
3218 | ||
5c7248cd | 3219 | if (session_name && strcmp((char *) name, session_name) != 0) { |
dcf266c0 | 3220 | /* This is not the session we are looking for */ |
c2da8cde DG |
3221 | ret = -LTTNG_ERR_NO_SESSION; |
3222 | goto error; | |
dcf266c0 JG |
3223 | } |
3224 | ||
3225 | /* Init domains to create the session handles */ | |
28ab034a | 3226 | for (node = xmlFirstElementChild(domains_node); node; node = xmlNextElementSibling(node)) { |
64803277 | 3227 | lttng_domain *domain = zmalloc<lttng_domain>(); |
dcf266c0 | 3228 | |
dcf266c0 JG |
3229 | if (!domain) { |
3230 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3231 | goto error; |
dcf266c0 JG |
3232 | } |
3233 | ||
3234 | ret = init_domain(node, domain); | |
3235 | if (ret) { | |
3236 | goto domain_init_error; | |
3237 | } | |
3238 | ||
3239 | switch (domain->type) { | |
3240 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3241 | if (kernel_domain) { |
3242 | /* Same domain seen twice, invalid! */ | |
3243 | goto domain_init_error; | |
3244 | } | |
dcf266c0 JG |
3245 | kernel_domain = domain; |
3246 | break; | |
3247 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3248 | if (ust_domain) { |
3249 | /* Same domain seen twice, invalid! */ | |
3250 | goto domain_init_error; | |
3251 | } | |
dcf266c0 JG |
3252 | ust_domain = domain; |
3253 | break; | |
3254 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3255 | if (jul_domain) { |
3256 | /* Same domain seen twice, invalid! */ | |
3257 | goto domain_init_error; | |
3258 | } | |
dcf266c0 JG |
3259 | jul_domain = domain; |
3260 | break; | |
5cdb6027 DG |
3261 | case LTTNG_DOMAIN_LOG4J: |
3262 | if (log4j_domain) { | |
3263 | /* Same domain seen twice, invalid! */ | |
3264 | goto domain_init_error; | |
3265 | } | |
3266 | log4j_domain = domain; | |
3267 | break; | |
47abf22b MJ |
3268 | case LTTNG_DOMAIN_LOG4J2: |
3269 | if (log4j2_domain) { | |
3270 | /* Same domain seen twice, invalid! */ | |
3271 | goto domain_init_error; | |
3272 | } | |
3273 | log4j2_domain = domain; | |
3274 | break; | |
0e115563 DG |
3275 | case LTTNG_DOMAIN_PYTHON: |
3276 | if (python_domain) { | |
3277 | /* Same domain seen twice, invalid! */ | |
3278 | goto domain_init_error; | |
3279 | } | |
3280 | python_domain = domain; | |
3281 | break; | |
dcf266c0 JG |
3282 | default: |
3283 | WARN("Invalid domain type"); | |
3284 | goto domain_init_error; | |
3285 | } | |
3286 | continue; | |
28ab034a | 3287 | domain_init_error: |
dcf266c0 JG |
3288 | free(domain); |
3289 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3290 | goto error; |
dcf266c0 JG |
3291 | } |
3292 | ||
2aaf5fc7 JR |
3293 | /* Apply overrides */ |
3294 | if (overrides) { | |
3295 | if (overrides->session_name) { | |
3296 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3297 | if (!name_override) { | |
3298 | ret = -LTTNG_ERR_NOMEM; | |
3299 | goto error; | |
3300 | } | |
3301 | ||
3302 | /* Overrides the session name to the provided name */ | |
3303 | xmlFree(name); | |
3304 | name = name_override; | |
3305 | } | |
3306 | } | |
3307 | ||
40b4155f | 3308 | if (overwrite) { |
dcf266c0 | 3309 | /* Destroy session if it exists */ |
d324faf7 | 3310 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3311 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3312 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3313 | goto error; |
dcf266c0 JG |
3314 | } |
3315 | } | |
3316 | ||
3317 | /* Create session type depending on output type */ | |
3318 | if (snapshot_mode && snapshot_mode != -1) { | |
28ab034a JG |
3319 | ret = create_snapshot_session((const char *) name, output_node, overrides); |
3320 | } else if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
3321 | ret = create_session( | |
3322 | (const char *) name, output_node, live_timer_interval, overrides); | |
dcf266c0 JG |
3323 | } else { |
3324 | /* regular session */ | |
28ab034a | 3325 | ret = create_session((const char *) name, output_node, UINT64_MAX, overrides); |
dcf266c0 | 3326 | } |
dcf266c0 | 3327 | if (ret) { |
c2da8cde | 3328 | goto error; |
dcf266c0 JG |
3329 | } |
3330 | ||
9e7c9f56 | 3331 | if (shm_path) { |
28ab034a | 3332 | ret = lttng_set_session_shm_path((const char *) name, (const char *) shm_path); |
9e7c9f56 JR |
3333 | if (ret) { |
3334 | goto error; | |
3335 | } | |
3336 | } | |
3337 | ||
28ab034a | 3338 | for (node = xmlFirstElementChild(domains_node); node; node = xmlNextElementSibling(node)) { |
d324faf7 | 3339 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3340 | if (ret) { |
3341 | goto end; | |
3342 | } | |
3343 | } | |
3344 | ||
66ea93b1 | 3345 | if (rotation_timer_interval) { |
28ab034a | 3346 | ret = add_periodic_rotation((const char *) name, rotation_timer_interval); |
66ea93b1 | 3347 | if (ret < 0) { |
259c2674 JD |
3348 | goto error; |
3349 | } | |
66ea93b1 JG |
3350 | } |
3351 | if (rotation_size) { | |
28ab034a | 3352 | ret = add_size_rotation((const char *) name, rotation_size); |
66ea93b1 | 3353 | if (ret < 0) { |
259c2674 JD |
3354 | goto error; |
3355 | } | |
3356 | } | |
3357 | ||
dcf266c0 | 3358 | if (started) { |
d324faf7 | 3359 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3360 | if (ret) { |
3361 | goto end; | |
3362 | } | |
3363 | } | |
c2da8cde | 3364 | |
dcf266c0 | 3365 | end: |
b2579dc1 | 3366 | if (ret < 0) { |
28ab034a | 3367 | ERR("Failed to load session %s: %s", (const char *) name, lttng_strerror(ret)); |
d324faf7 | 3368 | lttng_destroy_session((const char *) name); |
b2579dc1 JG |
3369 | } |
3370 | ||
c2da8cde | 3371 | error: |
dcf266c0 JG |
3372 | free(kernel_domain); |
3373 | free(ust_domain); | |
3374 | free(jul_domain); | |
5cdb6027 | 3375 | free(log4j_domain); |
47abf22b | 3376 | free(log4j2_domain); |
135a3893 | 3377 | free(python_domain); |
d324faf7 | 3378 | xmlFree(name); |
9e7c9f56 | 3379 | xmlFree(shm_path); |
dcf266c0 JG |
3380 | return ret; |
3381 | } | |
3382 | ||
cf53c06d DG |
3383 | /* |
3384 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3385 | * Return -1 if the path is EPERM. | |
3386 | */ | |
3387 | static int validate_file_read_creds(const char *path) | |
3388 | { | |
3389 | int ret; | |
3390 | ||
a0377dfe | 3391 | LTTNG_ASSERT(path); |
cf53c06d DG |
3392 | |
3393 | /* Can we read the file. */ | |
3394 | ret = access(path, R_OK); | |
3395 | if (!ret) { | |
3396 | goto valid; | |
3397 | } | |
3398 | if (errno == EACCES) { | |
3399 | return -1; | |
3400 | } else { | |
3401 | /* Invalid. */ | |
3402 | return 0; | |
3403 | } | |
3404 | valid: | |
3405 | return 1; | |
3406 | } | |
3407 | ||
28ab034a JG |
3408 | static int load_session_from_file(const char *path, |
3409 | const char *session_name, | |
3410 | struct session_config_validation_ctx *validation_ctx, | |
3411 | int overwrite, | |
3412 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3413 | { |
3414 | int ret, session_found = !session_name; | |
cd9adb8b | 3415 | xmlDocPtr doc = nullptr; |
dcf266c0 JG |
3416 | xmlNodePtr sessions_node; |
3417 | xmlNodePtr session_node; | |
dcf266c0 | 3418 | |
a0377dfe FD |
3419 | LTTNG_ASSERT(path); |
3420 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3421 | |
cf53c06d DG |
3422 | ret = validate_file_read_creds(path); |
3423 | if (ret != 1) { | |
3424 | if (ret == -1) { | |
3425 | ret = -LTTNG_ERR_EPERM; | |
3426 | } else { | |
3427 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3428 | } | |
dcf266c0 JG |
3429 | goto end; |
3430 | } | |
3431 | ||
3432 | doc = xmlParseFile(path); | |
3433 | if (!doc) { | |
3434 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3435 | goto end; | |
3436 | } | |
3437 | ||
3438 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3439 | if (ret) { | |
3440 | ERR("Session configuration file validation failed"); | |
3441 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3442 | goto end; | |
3443 | } | |
3444 | ||
3445 | sessions_node = xmlDocGetRootElement(doc); | |
3446 | if (!sessions_node) { | |
55c9e7ca | 3447 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3448 | goto end; |
3449 | } | |
3450 | ||
28ab034a JG |
3451 | for (session_node = xmlFirstElementChild(sessions_node); session_node; |
3452 | session_node = xmlNextElementSibling(session_node)) { | |
3453 | ret = process_session_node(session_node, session_name, overwrite, overrides); | |
317ea246 JG |
3454 | if (!session_name && ret) { |
3455 | /* Loading error occurred. */ | |
3456 | goto end; | |
3457 | } else if (session_name) { | |
3458 | if (ret == 0) { | |
3459 | /* Target session found and loaded */ | |
3460 | session_found = 1; | |
3461 | break; | |
3462 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3463 | /* | |
3464 | * Ignore this error, we are looking for a | |
3465 | * specific session. | |
3466 | */ | |
3467 | ret = 0; | |
3468 | } else { | |
3469 | /* Loading error occurred. */ | |
3470 | goto end; | |
3471 | } | |
dcf266c0 JG |
3472 | } |
3473 | } | |
3474 | end: | |
3475 | xmlFreeDoc(doc); | |
3476 | if (!ret) { | |
a96bc65d | 3477 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3478 | } |
3479 | return ret; | |
3480 | } | |
3481 | ||
28ab034a JG |
3482 | static int load_session_from_path(const char *path, |
3483 | const char *session_name, | |
3484 | struct session_config_validation_ctx *validation_ctx, | |
3485 | int overwrite, | |
3486 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3487 | { |
3488 | int ret, session_found = !session_name; | |
cd9adb8b | 3489 | DIR *directory = nullptr; |
cce35f91 JG |
3490 | struct lttng_dynamic_buffer file_path; |
3491 | size_t path_len; | |
dcf266c0 | 3492 | |
a0377dfe FD |
3493 | LTTNG_ASSERT(path); |
3494 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3495 | path_len = strlen(path); |
3496 | lttng_dynamic_buffer_init(&file_path); | |
3497 | if (path_len >= LTTNG_PATH_MAX) { | |
3498 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
28ab034a JG |
3499 | path, |
3500 | path_len, | |
3501 | LTTNG_PATH_MAX); | |
cce35f91 JG |
3502 | ret = -LTTNG_ERR_INVALID; |
3503 | goto end; | |
3504 | } | |
dcf266c0 | 3505 | |
4af16958 DG |
3506 | directory = opendir(path); |
3507 | if (!directory) { | |
11143783 DG |
3508 | switch (errno) { |
3509 | case ENOTDIR: | |
0f0a81b5 DG |
3510 | /* Try the file loading. */ |
3511 | break; | |
11143783 DG |
3512 | case ENOENT: |
3513 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3514 | goto end; | |
3515 | default: | |
0f0a81b5 DG |
3516 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3517 | goto end; | |
4af16958 | 3518 | } |
dcf266c0 | 3519 | } |
4af16958 | 3520 | if (directory) { |
cce35f91 | 3521 | size_t file_path_root_len; |
dcf266c0 | 3522 | |
28ab034a | 3523 | ret = lttng_dynamic_buffer_set_capacity(&file_path, LTTNG_PATH_MAX); |
cce35f91 JG |
3524 | if (ret) { |
3525 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3526 | goto end; |
3527 | } | |
3528 | ||
28ab034a | 3529 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
cce35f91 | 3530 | if (ret) { |
dcf266c0 | 3531 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3532 | goto end; |
3533 | } | |
3534 | ||
cce35f91 | 3535 | if (file_path.data[file_path.size - 1] != '/') { |
28ab034a | 3536 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); |
cce35f91 JG |
3537 | if (ret) { |
3538 | ret = -LTTNG_ERR_NOMEM; | |
3539 | goto end; | |
3540 | } | |
dcf266c0 | 3541 | } |
cce35f91 | 3542 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3543 | |
3544 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3545 | for (;;) { |
3546 | size_t file_name_len; | |
3547 | struct dirent *result; | |
3548 | ||
3549 | /* | |
3550 | * When the end of the directory stream is reached, NULL | |
3551 | * is returned and errno is kept unchanged. When an | |
3552 | * error occurs, NULL is returned and errno is set | |
3553 | * accordingly. To distinguish between the two, set | |
3554 | * errno to zero before calling readdir(). | |
3555 | * | |
3556 | * On success, readdir() returns a pointer to a dirent | |
3557 | * structure. This structure may be statically | |
3558 | * allocated, do not attempt to free(3) it. | |
3559 | */ | |
3560 | errno = 0; | |
3561 | result = readdir(directory); | |
3562 | ||
ff86d8d0 | 3563 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3564 | if (!result) { |
3565 | if (errno) { | |
28ab034a JG |
3566 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", |
3567 | path); | |
9a2df626 MJ |
3568 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3569 | goto end; | |
3570 | } | |
3571 | break; | |
3572 | } | |
3573 | ||
3574 | file_name_len = strlen(result->d_name); | |
dcf266c0 | 3575 | |
28ab034a | 3576 | if (file_name_len <= sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { |
dcf266c0 JG |
3577 | continue; |
3578 | } | |
3579 | ||
cce35f91 JG |
3580 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3581 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
28ab034a JG |
3582 | result->d_name, |
3583 | /* +1 to account for NULL terminator. */ | |
3584 | file_path.size + file_name_len + 1, | |
3585 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3586 | continue; |
3587 | } | |
3588 | ||
cce35f91 | 3589 | /* Does the file end with .lttng? */ |
dcf266c0 | 3590 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
28ab034a | 3591 | result->d_name + file_name_len - |
5c7248cd JG |
3592 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1) != |
3593 | 0) { | |
dcf266c0 JG |
3594 | continue; |
3595 | } | |
3596 | ||
28ab034a JG |
3597 | ret = lttng_dynamic_buffer_append( |
3598 | &file_path, result->d_name, file_name_len + 1); | |
cce35f91 JG |
3599 | if (ret) { |
3600 | ret = -LTTNG_ERR_NOMEM; | |
3601 | goto end; | |
3602 | } | |
dcf266c0 | 3603 | |
28ab034a JG |
3604 | ret = load_session_from_file( |
3605 | file_path.data, session_name, validation_ctx, overwrite, overrides); | |
3606 | if (session_name && (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3607 | session_found = 1; |
3608 | break; | |
3609 | } | |
55c9e7ca JR |
3610 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3611 | goto end; | |
3612 | } | |
cce35f91 JG |
3613 | /* |
3614 | * Reset the buffer's size to the location of the | |
3615 | * path's trailing '/'. | |
3616 | */ | |
28ab034a | 3617 | ret = lttng_dynamic_buffer_set_size(&file_path, file_path_root_len); |
cce35f91 JG |
3618 | if (ret) { |
3619 | ret = -LTTNG_ERR_UNK; | |
3620 | goto end; | |
3621 | } | |
dcf266c0 | 3622 | } |
dcf266c0 | 3623 | } else { |
28ab034a JG |
3624 | ret = load_session_from_file( |
3625 | path, session_name, validation_ctx, overwrite, overrides); | |
dcf266c0 JG |
3626 | if (ret) { |
3627 | goto end; | |
dcf266c0 | 3628 | } |
55c9e7ca | 3629 | session_found = 1; |
dcf266c0 JG |
3630 | } |
3631 | ||
55c9e7ca | 3632 | ret = 0; |
dcf266c0 JG |
3633 | end: |
3634 | if (directory) { | |
3635 | if (closedir(directory)) { | |
3636 | PERROR("closedir"); | |
3637 | } | |
3638 | } | |
55c9e7ca JR |
3639 | if (!ret && !session_found) { |
3640 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3641 | } |
cce35f91 | 3642 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3643 | return ret; |
3644 | } | |
3645 | ||
ab38c13f DG |
3646 | /* |
3647 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3648 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3649 | */ |
3650 | static int validate_path_creds(const char *path) | |
3651 | { | |
3652 | int ret, uid = getuid(); | |
3653 | struct stat buf; | |
3654 | ||
a0377dfe | 3655 | LTTNG_ASSERT(path); |
ab38c13f | 3656 | |
cf53c06d | 3657 | if (uid == 0) { |
ab38c13f DG |
3658 | goto valid; |
3659 | } | |
3660 | ||
3661 | ret = stat(path, &buf); | |
3662 | if (ret < 0) { | |
3663 | if (errno != ENOENT) { | |
3664 | PERROR("stat"); | |
3665 | } | |
ab38c13f DG |
3666 | goto valid; |
3667 | } | |
3668 | ||
3669 | if (buf.st_uid != uid) { | |
3670 | goto invalid; | |
3671 | } | |
3672 | ||
3673 | valid: | |
ab38c13f | 3674 | return 1; |
cf53c06d DG |
3675 | invalid: |
3676 | return 0; | |
ab38c13f DG |
3677 | } |
3678 | ||
28ab034a JG |
3679 | int config_load_session(const char *path, |
3680 | const char *session_name, | |
3681 | int overwrite, | |
3682 | unsigned int autoload, | |
3683 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3684 | { |
3685 | int ret; | |
6c66fa0f | 3686 | bool session_loaded = false; |
cd9adb8b | 3687 | const char *path_ptr = nullptr; |
1c9a0b0e | 3688 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3689 | |
3690 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3691 | if (ret) { | |
3692 | goto end; | |
3693 | } | |
3694 | ||
3695 | if (!path) { | |
4f00620d | 3696 | const char *home_path; |
ab38c13f DG |
3697 | const char *sys_path; |
3698 | ||
dcf266c0 | 3699 | /* Try home path */ |
ab38c13f | 3700 | home_path = utils_get_home_dir(); |
dcf266c0 | 3701 | if (home_path) { |
db8196db | 3702 | char path_buf[PATH_MAX]; |
dcf266c0 | 3703 | |
d4fcf703 DG |
3704 | /* |
3705 | * Try user session configuration path. Ignore error here so we can | |
3706 | * continue loading the system wide sessions. | |
3707 | */ | |
ab38c13f | 3708 | if (autoload) { |
28ab034a JG |
3709 | ret = snprintf(path_buf, |
3710 | sizeof(path_buf), | |
3711 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3712 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3713 | home_path); | |
cf53c06d DG |
3714 | if (ret < 0) { |
3715 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3716 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3717 | goto end; |
3718 | } | |
3719 | ||
3720 | /* | |
3721 | * Credentials are only validated for the autoload in order to | |
3722 | * avoid any user session daemon to try to load kernel sessions | |
3723 | * automatically and failing all the times. | |
3724 | */ | |
db8196db | 3725 | ret = validate_path_creds(path_buf); |
cf53c06d | 3726 | if (ret) { |
db8196db | 3727 | path_ptr = path_buf; |
cf53c06d | 3728 | } |
ab38c13f | 3729 | } else { |
28ab034a JG |
3730 | ret = snprintf(path_buf, |
3731 | sizeof(path_buf), | |
3732 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3733 | home_path); | |
cf53c06d DG |
3734 | if (ret < 0) { |
3735 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3736 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3737 | goto end; |
3738 | } | |
db8196db | 3739 | path_ptr = path_buf; |
ab38c13f | 3740 | } |
cf53c06d | 3741 | if (path_ptr) { |
28ab034a JG |
3742 | ret = load_session_from_path(path_ptr, |
3743 | session_name, | |
3744 | &validation_ctx, | |
3745 | overwrite, | |
3746 | overrides); | |
d4fcf703 DG |
3747 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3748 | goto end; | |
3749 | } | |
3750 | /* | |
3751 | * Continue even if the session was found since we have to try | |
3752 | * the system wide sessions. | |
3753 | */ | |
6c66fa0f | 3754 | session_loaded = true; |
ab38c13f | 3755 | } |
d4fcf703 | 3756 | } |
ab38c13f | 3757 | |
cf53c06d | 3758 | /* Reset path pointer for the system wide dir. */ |
cd9adb8b | 3759 | path_ptr = nullptr; |
cf53c06d | 3760 | |
d4fcf703 DG |
3761 | /* Try system wide configuration directory. */ |
3762 | if (autoload) { | |
28ab034a JG |
3763 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH |
3764 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3765 | ret = validate_path_creds(sys_path); |
3766 | if (ret) { | |
3767 | path_ptr = sys_path; | |
3768 | } | |
d4fcf703 | 3769 | } else { |
cf53c06d DG |
3770 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3771 | path_ptr = sys_path; | |
d4fcf703 DG |
3772 | } |
3773 | ||
cf53c06d | 3774 | if (path_ptr) { |
28ab034a JG |
3775 | ret = load_session_from_path( |
3776 | path_ptr, session_name, &validation_ctx, overwrite, overrides); | |
6c66fa0f JG |
3777 | if (!ret) { |
3778 | session_loaded = true; | |
3779 | } | |
55c9e7ca JR |
3780 | } else { |
3781 | ret = 0; | |
dcf266c0 JG |
3782 | } |
3783 | } else { | |
3784 | ret = access(path, F_OK); | |
3785 | if (ret < 0) { | |
3786 | PERROR("access"); | |
3787 | switch (errno) { | |
3788 | case ENOENT: | |
3789 | ret = -LTTNG_ERR_INVALID; | |
3790 | WARN("Session configuration path does not exist."); | |
3791 | break; | |
3792 | case EACCES: | |
3793 | ret = -LTTNG_ERR_EPERM; | |
3794 | break; | |
3795 | default: | |
3796 | ret = -LTTNG_ERR_UNK; | |
3797 | break; | |
3798 | } | |
3799 | goto end; | |
3800 | } | |
3801 | ||
28ab034a JG |
3802 | ret = load_session_from_path( |
3803 | path, session_name, &validation_ctx, overwrite, overrides); | |
dcf266c0 JG |
3804 | } |
3805 | end: | |
3806 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3807 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3808 | /* | |
3809 | * Don't report an error if no sessions are found when called | |
3810 | * without a session_name or a search path. | |
3811 | */ | |
3812 | ret = 0; | |
3813 | } | |
6c66fa0f JG |
3814 | |
3815 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3816 | /* A matching session was found in one of the search paths. */ | |
3817 | ret = 0; | |
3818 | } | |
dcf266c0 JG |
3819 | return ret; |
3820 | } | |
56766c75 | 3821 | |
cd9adb8b | 3822 | static void __attribute__((destructor)) session_config_exit() |
56766c75 JG |
3823 | { |
3824 | xmlCleanupParser(); | |
3825 | } |