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"; | |
167 | const char *const config_domain_type_python = "PYTHON"; | |
168 | ||
169 | const char *const config_buffer_type_per_pid = "PER_PID"; | |
170 | const char *const config_buffer_type_per_uid = "PER_UID"; | |
171 | const char *const config_buffer_type_global = "GLOBAL"; | |
172 | ||
173 | const char *const config_overwrite_mode_discard = "DISCARD"; | |
174 | const char *const config_overwrite_mode_overwrite = "OVERWRITE"; | |
175 | ||
176 | const char *const config_output_type_splice = "SPLICE"; | |
177 | const char *const config_output_type_mmap = "MMAP"; | |
178 | ||
179 | const char *const config_loglevel_type_all = "ALL"; | |
180 | const char *const config_loglevel_type_range = "RANGE"; | |
181 | const char *const config_loglevel_type_single = "SINGLE"; | |
182 | ||
183 | const char *const config_event_type_all = "ALL"; | |
184 | const char *const config_event_type_tracepoint = "TRACEPOINT"; | |
185 | const char *const config_event_type_probe = "PROBE"; | |
186 | const char *const config_event_type_userspace_probe = "USERSPACE_PROBE"; | |
187 | const char *const config_event_type_function = "FUNCTION"; | |
188 | const char *const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
189 | const char *const config_event_type_noop = "NOOP"; | |
190 | const char *const config_event_type_syscall = "SYSCALL"; | |
191 | const char *const config_event_type_kprobe = "KPROBE"; | |
192 | const char *const config_event_type_kretprobe = "KRETPROBE"; | |
193 | ||
194 | const char *const config_event_context_pid = "PID"; | |
195 | const char *const config_event_context_procname = "PROCNAME"; | |
196 | const char *const config_event_context_prio = "PRIO"; | |
197 | const char *const config_event_context_nice = "NICE"; | |
198 | const char *const config_event_context_vpid = "VPID"; | |
199 | const char *const config_event_context_tid = "TID"; | |
200 | const char *const config_event_context_vtid = "VTID"; | |
201 | const char *const config_event_context_ppid = "PPID"; | |
202 | const char *const config_event_context_vppid = "VPPID"; | |
203 | const char *const config_event_context_pthread_id = "PTHREAD_ID"; | |
204 | const char *const config_event_context_hostname = "HOSTNAME"; | |
205 | const char *const config_event_context_ip = "IP"; | |
206 | const char *const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; | |
207 | const char *const config_event_context_app = "APP"; | |
208 | const char *const config_event_context_interruptible = "INTERRUPTIBLE"; | |
209 | const char *const config_event_context_preemptible = "PREEMPTIBLE"; | |
210 | const char *const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
211 | const char *const config_event_context_migratable = "MIGRATABLE"; | |
212 | const char *const config_event_context_callstack_user = "CALLSTACK_USER"; | |
213 | const char *const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
214 | const char *const config_event_context_cgroup_ns = "CGROUP_NS"; | |
215 | const char *const config_event_context_ipc_ns = "IPC_NS"; | |
216 | const char *const config_event_context_mnt_ns = "MNT_NS"; | |
217 | const char *const config_event_context_net_ns = "NET_NS"; | |
218 | const char *const config_event_context_pid_ns = "PID_NS"; | |
219 | const char *const config_event_context_time_ns = "TIME_NS"; | |
220 | const char *const config_event_context_user_ns = "USER_NS"; | |
221 | const char *const config_event_context_uts_ns = "UTS_NS"; | |
222 | const char *const config_event_context_uid = "UID"; | |
223 | const char *const config_event_context_euid = "EUID"; | |
224 | const char *const config_event_context_suid = "SUID"; | |
225 | const char *const config_event_context_gid = "GID"; | |
226 | const char *const config_event_context_egid = "EGID"; | |
227 | const char *const config_event_context_sgid = "SGID"; | |
228 | const char *const config_event_context_vuid = "VUID"; | |
229 | const char *const config_event_context_veuid = "VEUID"; | |
230 | const char *const config_event_context_vsuid = "VSUID"; | |
231 | const char *const config_event_context_vgid = "VGID"; | |
232 | const char *const config_event_context_vegid = "VEGID"; | |
233 | const char *const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 234 | |
fbd987c9 | 235 | /* Deprecated symbols */ |
3afa94ae | 236 | LTTNG_EXPORT const char *config_element_perf; |
fbd987c9 | 237 | |
d7b645e2 JR |
238 | enum process_event_node_phase { |
239 | CREATION = 0, | |
240 | ENABLE = 1, | |
241 | }; | |
242 | ||
f1494934 | 243 | namespace { |
dcf266c0 JG |
244 | struct consumer_output { |
245 | int enabled; | |
246 | char *path; | |
247 | char *control_uri; | |
248 | char *data_uri; | |
249 | }; | |
f1494934 | 250 | } /* namespace */ |
dcf266c0 | 251 | |
36f2332b JG |
252 | /* |
253 | * Returns a xmlChar string which must be released using xmlFree(). | |
254 | */ | |
255 | static xmlChar *encode_string(const char *in_str) | |
256 | { | |
cd9adb8b | 257 | xmlChar *out_str = nullptr; |
36f2332b JG |
258 | xmlCharEncodingHandlerPtr handler; |
259 | int out_len, ret, in_len; | |
260 | ||
a0377dfe | 261 | LTTNG_ASSERT(in_str); |
36f2332b JG |
262 | |
263 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
264 | if (!handler) { | |
265 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
266 | goto end; | |
267 | } | |
268 | ||
269 | in_len = strlen(in_str); | |
270 | /* | |
f76d886f JG |
271 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
272 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 273 | */ |
f76d886f | 274 | out_len = (in_len * 4) + 1; |
3afa94ae | 275 | out_str = (xmlChar *) xmlMalloc(out_len); |
36f2332b JG |
276 | if (!out_str) { |
277 | goto end; | |
278 | } | |
279 | ||
280 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
281 | if (ret < 0) { | |
282 | xmlFree(out_str); | |
cd9adb8b | 283 | out_str = nullptr; |
36f2332b JG |
284 | goto end; |
285 | } | |
286 | ||
287 | /* out_len is now the size of out_str */ | |
288 | out_str[out_len] = '\0'; | |
289 | end: | |
290 | return out_str; | |
291 | } | |
292 | ||
705bb62f | 293 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
294 | { |
295 | int ret; | |
296 | struct config_writer *writer; | |
297 | xmlOutputBufferPtr buffer; | |
298 | ||
64803277 | 299 | writer = zmalloc<config_writer>(); |
36f2332b JG |
300 | if (!writer) { |
301 | PERROR("zmalloc config_writer_create"); | |
302 | goto end; | |
303 | } | |
304 | ||
cd9adb8b | 305 | buffer = xmlOutputBufferCreateFd(fd_output, nullptr); |
36f2332b JG |
306 | if (!buffer) { |
307 | goto error_destroy; | |
308 | } | |
309 | ||
310 | writer->writer = xmlNewTextWriter(buffer); | |
cd9adb8b | 311 | ret = xmlTextWriterStartDocument(writer->writer, nullptr, config_xml_encoding, nullptr); |
36f2332b JG |
312 | if (ret < 0) { |
313 | goto error_destroy; | |
314 | } | |
315 | ||
28ab034a | 316 | ret = xmlTextWriterSetIndentString(writer->writer, BAD_CAST config_xml_indent_string); |
705bb62f | 317 | if (ret) { |
36f2332b JG |
318 | goto error_destroy; |
319 | } | |
320 | ||
705bb62f JRJ |
321 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
322 | if (ret) { | |
36f2332b JG |
323 | goto error_destroy; |
324 | } | |
325 | ||
326 | end: | |
327 | return writer; | |
328 | error_destroy: | |
329 | config_writer_destroy(writer); | |
cd9adb8b | 330 | return nullptr; |
36f2332b JG |
331 | } |
332 | ||
36f2332b JG |
333 | int config_writer_destroy(struct config_writer *writer) |
334 | { | |
335 | int ret = 0; | |
336 | ||
337 | if (!writer) { | |
338 | ret = -EINVAL; | |
339 | goto end; | |
340 | } | |
341 | ||
342 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
343 | WARN("Could not close XML document"); | |
344 | ret = -EIO; | |
345 | } | |
346 | ||
347 | if (writer->writer) { | |
348 | xmlFreeTextWriter(writer->writer); | |
349 | } | |
350 | ||
351 | free(writer); | |
352 | end: | |
353 | return ret; | |
354 | } | |
355 | ||
28ab034a | 356 | int config_writer_open_element(struct config_writer *writer, const char *element_name) |
36f2332b JG |
357 | { |
358 | int ret; | |
359 | xmlChar *encoded_element_name; | |
360 | ||
361 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
362 | ret = -1; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | encoded_element_name = encode_string(element_name); | |
367 | if (!encoded_element_name) { | |
368 | ret = -1; | |
369 | goto end; | |
370 | } | |
371 | ||
372 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
373 | xmlFree(encoded_element_name); | |
374 | end: | |
28676a1d | 375 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
376 | } |
377 | ||
28ab034a | 378 | int config_writer_write_attribute(struct config_writer *writer, const char *name, const char *value) |
e10b6a1c JG |
379 | { |
380 | int ret; | |
cd9adb8b JG |
381 | xmlChar *encoded_name = nullptr; |
382 | xmlChar *encoded_value = nullptr; | |
e10b6a1c JG |
383 | |
384 | if (!writer || !writer->writer || !name || !name[0]) { | |
385 | ret = -1; | |
386 | goto end; | |
387 | } | |
388 | ||
389 | encoded_name = encode_string(name); | |
390 | if (!encoded_name) { | |
391 | ret = -1; | |
392 | goto end; | |
393 | } | |
394 | ||
395 | encoded_value = encode_string(value); | |
396 | if (!encoded_value) { | |
397 | ret = -1; | |
398 | goto end; | |
399 | } | |
400 | ||
28ab034a | 401 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, encoded_value); |
e10b6a1c JG |
402 | end: |
403 | xmlFree(encoded_name); | |
404 | xmlFree(encoded_value); | |
405 | return ret >= 0 ? 0 : ret; | |
406 | } | |
407 | ||
36f2332b JG |
408 | int config_writer_close_element(struct config_writer *writer) |
409 | { | |
410 | int ret; | |
411 | ||
412 | if (!writer || !writer->writer) { | |
413 | ret = -1; | |
414 | goto end; | |
415 | } | |
416 | ||
417 | ret = xmlTextWriterEndElement(writer->writer); | |
418 | end: | |
28676a1d | 419 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
420 | } |
421 | ||
36f2332b | 422 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
28ab034a JG |
423 | const char *element_name, |
424 | uint64_t value) | |
36f2332b JG |
425 | { |
426 | int ret; | |
427 | xmlChar *encoded_element_name; | |
428 | ||
429 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
430 | ret = -1; | |
431 | goto end; | |
432 | } | |
433 | ||
434 | encoded_element_name = encode_string(element_name); | |
435 | if (!encoded_element_name) { | |
436 | ret = -1; | |
437 | goto end; | |
438 | } | |
439 | ||
28ab034a JG |
440 | ret = xmlTextWriterWriteFormatElement( |
441 | writer->writer, encoded_element_name, "%" PRIu64, value); | |
36f2332b JG |
442 | xmlFree(encoded_element_name); |
443 | end: | |
28676a1d | 444 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
445 | } |
446 | ||
36f2332b | 447 | int config_writer_write_element_signed_int(struct config_writer *writer, |
28ab034a JG |
448 | const char *element_name, |
449 | int64_t value) | |
36f2332b JG |
450 | { |
451 | int ret; | |
452 | xmlChar *encoded_element_name; | |
453 | ||
454 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
455 | ret = -1; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | encoded_element_name = encode_string(element_name); | |
460 | if (!encoded_element_name) { | |
461 | ret = -1; | |
462 | goto end; | |
463 | } | |
464 | ||
28ab034a JG |
465 | ret = xmlTextWriterWriteFormatElement( |
466 | writer->writer, encoded_element_name, "%" PRIi64, value); | |
36f2332b JG |
467 | xmlFree(encoded_element_name); |
468 | end: | |
28676a1d | 469 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
470 | } |
471 | ||
36f2332b | 472 | int config_writer_write_element_bool(struct config_writer *writer, |
28ab034a JG |
473 | const char *element_name, |
474 | int value) | |
36f2332b | 475 | { |
28ab034a JG |
476 | return config_writer_write_element_string( |
477 | writer, element_name, value ? config_xml_true : config_xml_false); | |
36f2332b JG |
478 | } |
479 | ||
2b166400 | 480 | int config_writer_write_element_double(struct config_writer *writer, |
28ab034a JG |
481 | const char *element_name, |
482 | double value) | |
2b166400 JR |
483 | { |
484 | int ret; | |
485 | xmlChar *encoded_element_name; | |
486 | ||
487 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
488 | ret = -1; | |
489 | goto end; | |
490 | } | |
491 | ||
492 | encoded_element_name = encode_string(element_name); | |
493 | if (!encoded_element_name) { | |
494 | ret = -1; | |
495 | goto end; | |
496 | } | |
497 | ||
28ab034a | 498 | ret = xmlTextWriterWriteFormatElement(writer->writer, encoded_element_name, "%f", value); |
2b166400 JR |
499 | xmlFree(encoded_element_name); |
500 | end: | |
501 | return ret >= 0 ? 0 : ret; | |
502 | } | |
503 | ||
36f2332b | 504 | int config_writer_write_element_string(struct config_writer *writer, |
28ab034a JG |
505 | const char *element_name, |
506 | const char *value) | |
36f2332b JG |
507 | { |
508 | int ret; | |
cd9adb8b JG |
509 | xmlChar *encoded_element_name = nullptr; |
510 | xmlChar *encoded_value = nullptr; | |
36f2332b | 511 | |
28ab034a | 512 | if (!writer || !writer->writer || !element_name || !element_name[0] || !value) { |
36f2332b JG |
513 | ret = -1; |
514 | goto end; | |
515 | } | |
516 | ||
517 | encoded_element_name = encode_string(element_name); | |
518 | if (!encoded_element_name) { | |
519 | ret = -1; | |
520 | goto end; | |
521 | } | |
522 | ||
523 | encoded_value = encode_string(value); | |
524 | if (!encoded_value) { | |
525 | ret = -1; | |
526 | goto end; | |
527 | } | |
528 | ||
28ab034a | 529 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, encoded_value); |
36f2332b JG |
530 | end: |
531 | xmlFree(encoded_element_name); | |
532 | xmlFree(encoded_value); | |
28676a1d | 533 | return ret >= 0 ? 0 : ret; |
36f2332b | 534 | } |
dcf266c0 | 535 | |
28ab034a JG |
536 | static ATTR_FORMAT_PRINTF(2, 3) void xml_error_handler(void *ctx __attribute__((unused)), |
537 | const char *format, | |
538 | ...) | |
dcf266c0 JG |
539 | { |
540 | char *errMsg; | |
541 | va_list args; | |
542 | int ret; | |
543 | ||
544 | va_start(args, format); | |
545 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 546 | va_end(args); |
dcf266c0 JG |
547 | if (ret == -1) { |
548 | ERR("String allocation failed in xml error handler"); | |
549 | return; | |
550 | } | |
dcf266c0 JG |
551 | |
552 | fprintf(stderr, "XML Error: %s", errMsg); | |
553 | free(errMsg); | |
554 | } | |
555 | ||
28ab034a | 556 | static void fini_session_config_validation_ctx(struct session_config_validation_ctx *ctx) |
dcf266c0 JG |
557 | { |
558 | if (ctx->parser_ctx) { | |
559 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
560 | } | |
561 | ||
562 | if (ctx->schema) { | |
563 | xmlSchemaFree(ctx->schema); | |
564 | } | |
565 | ||
566 | if (ctx->schema_validation_ctx) { | |
567 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
568 | } | |
569 | ||
570 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
571 | } | |
572 | ||
cd9adb8b | 573 | static char *get_session_config_xsd_path() |
54e399cb JG |
574 | { |
575 | char *xsd_path; | |
e8fa9fb0 | 576 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
577 | size_t base_path_len; |
578 | size_t max_path_len; | |
579 | ||
580 | if (!base_path) { | |
581 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
582 | } | |
583 | ||
584 | base_path_len = strlen(base_path); | |
28ab034a | 585 | max_path_len = base_path_len + sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; |
64803277 | 586 | xsd_path = zmalloc<char>(max_path_len); |
54e399cb JG |
587 | if (!xsd_path) { |
588 | goto end; | |
589 | } | |
590 | ||
00a7f6f8 | 591 | strcpy(xsd_path, base_path); |
54e399cb JG |
592 | if (xsd_path[base_path_len - 1] != '/') { |
593 | xsd_path[base_path_len++] = '/'; | |
594 | } | |
595 | ||
00a7f6f8 | 596 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
597 | end: |
598 | return xsd_path; | |
599 | } | |
600 | ||
28ab034a | 601 | static int init_session_config_validation_ctx(struct session_config_validation_ctx *ctx) |
dcf266c0 JG |
602 | { |
603 | int ret; | |
54e399cb JG |
604 | char *xsd_path = get_session_config_xsd_path(); |
605 | ||
606 | if (!xsd_path) { | |
607 | ret = -LTTNG_ERR_NOMEM; | |
608 | goto end; | |
609 | } | |
dcf266c0 | 610 | |
54e399cb | 611 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
612 | if (!ctx->parser_ctx) { |
613 | ERR("XSD parser context creation failed"); | |
614 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
615 | goto end; | |
616 | } | |
cd9adb8b | 617 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, xml_error_handler, nullptr); |
dcf266c0 JG |
618 | |
619 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
620 | if (!ctx->schema) { | |
621 | ERR("XSD parsing failed"); | |
622 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
623 | goto end; | |
624 | } | |
625 | ||
626 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
627 | if (!ctx->schema_validation_ctx) { | |
628 | ERR("XSD validation context creation failed"); | |
629 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
630 | goto end; | |
631 | } | |
632 | ||
28ab034a | 633 | xmlSchemaSetValidErrors( |
cd9adb8b | 634 | ctx->schema_validation_ctx, xml_error_handler, xml_error_handler, nullptr); |
dcf266c0 JG |
635 | ret = 0; |
636 | ||
637 | end: | |
638 | if (ret) { | |
639 | fini_session_config_validation_ctx(ctx); | |
640 | } | |
641 | ||
54e399cb | 642 | free(xsd_path); |
dcf266c0 JG |
643 | return ret; |
644 | } | |
645 | ||
28ab034a | 646 | static int parse_uint(xmlChar *str, uint64_t *val) |
dcf266c0 JG |
647 | { |
648 | int ret; | |
649 | char *endptr; | |
650 | ||
651 | if (!str || !val) { | |
652 | ret = -1; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | *val = strtoull((const char *) str, &endptr, 10); | |
657 | if (!endptr || *endptr) { | |
658 | ret = -1; | |
659 | } else { | |
660 | ret = 0; | |
661 | } | |
662 | ||
663 | end: | |
664 | return ret; | |
665 | } | |
666 | ||
28ab034a | 667 | static int parse_int(xmlChar *str, int64_t *val) |
dcf266c0 JG |
668 | { |
669 | int ret; | |
670 | char *endptr; | |
671 | ||
672 | if (!str || !val) { | |
673 | ret = -1; | |
674 | goto end; | |
675 | } | |
676 | ||
677 | *val = strtoll((const char *) str, &endptr, 10); | |
678 | if (!endptr || *endptr) { | |
679 | ret = -1; | |
680 | } else { | |
681 | ret = 0; | |
682 | } | |
683 | ||
684 | end: | |
685 | return ret; | |
686 | } | |
687 | ||
28ab034a | 688 | static int parse_bool(xmlChar *str, int *val) |
dcf266c0 JG |
689 | { |
690 | int ret = 0; | |
691 | ||
692 | if (!str || !val) { | |
693 | ret = -1; | |
694 | goto end; | |
695 | } | |
696 | ||
28ab034a | 697 | if (!strcmp((const char *) str, config_xml_true) || !strcmp((const char *) str, "1")) { |
dcf266c0 | 698 | *val = 1; |
47945b17 | 699 | } else if (!strcmp((const char *) str, config_xml_false) || |
28ab034a | 700 | !strcmp((const char *) str, "0")) { |
dcf266c0 JG |
701 | *val = 0; |
702 | } else { | |
28ab034a | 703 | WARN("Invalid boolean value encountered (%s).", (const char *) str); |
dcf266c0 JG |
704 | ret = -1; |
705 | } | |
706 | end: | |
707 | return ret; | |
708 | } | |
709 | ||
28ab034a | 710 | static int get_domain_type(xmlChar *domain) |
dcf266c0 JG |
711 | { |
712 | int ret; | |
713 | ||
714 | if (!domain) { | |
715 | goto error; | |
716 | } | |
717 | ||
718 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
719 | ret = LTTNG_DOMAIN_KERNEL; | |
720 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
721 | ret = LTTNG_DOMAIN_UST; | |
722 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
723 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
724 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
725 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
726 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
727 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
728 | } else { |
729 | goto error; | |
730 | } | |
731 | ||
732 | return ret; | |
733 | error: | |
734 | return -1; | |
735 | } | |
736 | ||
28ab034a | 737 | static int get_buffer_type(xmlChar *buffer_type) |
dcf266c0 JG |
738 | { |
739 | int ret; | |
740 | ||
741 | if (!buffer_type) { | |
742 | goto error; | |
743 | } | |
744 | ||
745 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
746 | ret = LTTNG_BUFFER_GLOBAL; | |
747 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
748 | ret = LTTNG_BUFFER_PER_UID; | |
749 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
750 | ret = LTTNG_BUFFER_PER_PID; | |
751 | } else { | |
752 | goto error; | |
753 | } | |
754 | ||
755 | return ret; | |
756 | error: | |
757 | return -1; | |
758 | } | |
759 | ||
28ab034a | 760 | static int get_overwrite_mode(xmlChar *overwrite_mode) |
dcf266c0 JG |
761 | { |
762 | int ret; | |
763 | ||
764 | if (!overwrite_mode) { | |
765 | goto error; | |
766 | } | |
767 | ||
768 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
769 | ret = 1; | |
28ab034a | 770 | } else if (!strcmp((char *) overwrite_mode, config_overwrite_mode_discard)) { |
dcf266c0 JG |
771 | ret = 0; |
772 | } else { | |
773 | goto error; | |
774 | } | |
775 | ||
776 | return ret; | |
777 | error: | |
778 | return -1; | |
779 | } | |
780 | ||
28ab034a | 781 | static int get_output_type(xmlChar *output_type) |
dcf266c0 JG |
782 | { |
783 | int ret; | |
784 | ||
785 | if (!output_type) { | |
786 | goto error; | |
787 | } | |
788 | ||
789 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
790 | ret = LTTNG_EVENT_MMAP; | |
791 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
792 | ret = LTTNG_EVENT_SPLICE; | |
793 | } else { | |
794 | goto error; | |
795 | } | |
796 | ||
797 | return ret; | |
798 | error: | |
799 | return -1; | |
800 | } | |
801 | ||
28ab034a | 802 | static int get_event_type(xmlChar *event_type) |
dcf266c0 JG |
803 | { |
804 | int ret; | |
805 | ||
806 | if (!event_type) { | |
807 | goto error; | |
808 | } | |
809 | ||
810 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
811 | ret = LTTNG_EVENT_ALL; | |
812 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
813 | ret = LTTNG_EVENT_TRACEPOINT; | |
814 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
815 | ret = LTTNG_EVENT_PROBE; | |
28ab034a | 816 | } else if (!strcmp((char *) event_type, config_event_type_userspace_probe)) { |
c1e83fb4 | 817 | ret = LTTNG_EVENT_USERSPACE_PROBE; |
dcf266c0 JG |
818 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
819 | ret = LTTNG_EVENT_FUNCTION; | |
28ab034a | 820 | } else if (!strcmp((char *) event_type, config_event_type_function_entry)) { |
dcf266c0 JG |
821 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
822 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
823 | ret = LTTNG_EVENT_NOOP; | |
824 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
825 | ret = LTTNG_EVENT_SYSCALL; | |
826 | } else { | |
827 | goto error; | |
828 | } | |
829 | ||
830 | return ret; | |
831 | error: | |
832 | return -1; | |
833 | } | |
834 | ||
28ab034a | 835 | static int get_loglevel_type(xmlChar *loglevel_type) |
dcf266c0 JG |
836 | { |
837 | int ret; | |
838 | ||
839 | if (!loglevel_type) { | |
840 | goto error; | |
841 | } | |
842 | ||
843 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
844 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
28ab034a | 845 | } else if (!strcmp((char *) loglevel_type, config_loglevel_type_range)) { |
dcf266c0 | 846 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; |
28ab034a | 847 | } else if (!strcmp((char *) loglevel_type, config_loglevel_type_single)) { |
dcf266c0 JG |
848 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; |
849 | } else { | |
850 | goto error; | |
851 | } | |
852 | ||
853 | return ret; | |
854 | error: | |
855 | return -1; | |
856 | } | |
857 | ||
858 | /* | |
859 | * Return the context type or -1 on error. | |
860 | */ | |
28ab034a | 861 | static int get_context_type(xmlChar *context_type) |
dcf266c0 JG |
862 | { |
863 | int ret; | |
864 | ||
865 | if (!context_type) { | |
866 | goto error; | |
867 | } | |
868 | ||
869 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
870 | ret = LTTNG_EVENT_CONTEXT_PID; | |
28ab034a | 871 | } else if (!strcmp((char *) context_type, config_event_context_procname)) { |
dcf266c0 | 872 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; |
28ab034a | 873 | } else if (!strcmp((char *) context_type, config_event_context_prio)) { |
dcf266c0 | 874 | ret = LTTNG_EVENT_CONTEXT_PRIO; |
28ab034a | 875 | } else if (!strcmp((char *) context_type, config_event_context_nice)) { |
dcf266c0 | 876 | ret = LTTNG_EVENT_CONTEXT_NICE; |
28ab034a | 877 | } else if (!strcmp((char *) context_type, config_event_context_vpid)) { |
dcf266c0 | 878 | ret = LTTNG_EVENT_CONTEXT_VPID; |
28ab034a | 879 | } else if (!strcmp((char *) context_type, config_event_context_tid)) { |
dcf266c0 | 880 | ret = LTTNG_EVENT_CONTEXT_TID; |
28ab034a | 881 | } else if (!strcmp((char *) context_type, config_event_context_vtid)) { |
dcf266c0 | 882 | ret = LTTNG_EVENT_CONTEXT_VTID; |
28ab034a | 883 | } else if (!strcmp((char *) context_type, config_event_context_ppid)) { |
dcf266c0 | 884 | ret = LTTNG_EVENT_CONTEXT_PPID; |
28ab034a | 885 | } else if (!strcmp((char *) context_type, config_event_context_vppid)) { |
dcf266c0 | 886 | ret = LTTNG_EVENT_CONTEXT_VPPID; |
28ab034a | 887 | } else if (!strcmp((char *) context_type, config_event_context_pthread_id)) { |
dcf266c0 | 888 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; |
28ab034a | 889 | } else if (!strcmp((char *) context_type, config_event_context_hostname)) { |
dcf266c0 | 890 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; |
28ab034a | 891 | } else if (!strcmp((char *) context_type, config_event_context_ip)) { |
dcf266c0 | 892 | ret = LTTNG_EVENT_CONTEXT_IP; |
28ab034a | 893 | } else if (!strcmp((char *) context_type, config_event_context_interruptible)) { |
1ae5e83e | 894 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; |
28ab034a | 895 | } else if (!strcmp((char *) context_type, config_event_context_preemptible)) { |
1ae5e83e | 896 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; |
28ab034a | 897 | } else if (!strcmp((char *) context_type, config_event_context_need_reschedule)) { |
1ae5e83e | 898 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; |
28ab034a | 899 | } else if (!strcmp((char *) context_type, config_event_context_migratable)) { |
1ae5e83e | 900 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; |
28ab034a | 901 | } else if (!strcmp((char *) context_type, config_event_context_callstack_user)) { |
16c4c991 | 902 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; |
28ab034a | 903 | } else if (!strcmp((char *) context_type, config_event_context_callstack_kernel)) { |
16c4c991 | 904 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; |
28ab034a | 905 | } else if (!strcmp((char *) context_type, config_event_context_cgroup_ns)) { |
40e14884 | 906 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; |
28ab034a | 907 | } else if (!strcmp((char *) context_type, config_event_context_ipc_ns)) { |
40e14884 | 908 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; |
28ab034a | 909 | } else if (!strcmp((char *) context_type, config_event_context_mnt_ns)) { |
40e14884 | 910 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; |
28ab034a | 911 | } else if (!strcmp((char *) context_type, config_event_context_net_ns)) { |
40e14884 | 912 | ret = LTTNG_EVENT_CONTEXT_NET_NS; |
28ab034a | 913 | } else if (!strcmp((char *) context_type, config_event_context_pid_ns)) { |
40e14884 | 914 | ret = LTTNG_EVENT_CONTEXT_PID_NS; |
28ab034a | 915 | } else if (!strcmp((char *) context_type, config_event_context_time_ns)) { |
d37ac3cd | 916 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; |
28ab034a | 917 | } else if (!strcmp((char *) context_type, config_event_context_user_ns)) { |
40e14884 | 918 | ret = LTTNG_EVENT_CONTEXT_USER_NS; |
28ab034a | 919 | } else if (!strcmp((char *) context_type, config_event_context_uts_ns)) { |
40e14884 | 920 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; |
28ab034a | 921 | } else if (!strcmp((char *) context_type, config_event_context_uid)) { |
499cbfa1 | 922 | ret = LTTNG_EVENT_CONTEXT_UID; |
28ab034a | 923 | } else if (!strcmp((char *) context_type, config_event_context_euid)) { |
499cbfa1 | 924 | ret = LTTNG_EVENT_CONTEXT_EUID; |
28ab034a | 925 | } else if (!strcmp((char *) context_type, config_event_context_suid)) { |
499cbfa1 | 926 | ret = LTTNG_EVENT_CONTEXT_SUID; |
28ab034a | 927 | } else if (!strcmp((char *) context_type, config_event_context_gid)) { |
499cbfa1 | 928 | ret = LTTNG_EVENT_CONTEXT_GID; |
28ab034a | 929 | } else if (!strcmp((char *) context_type, config_event_context_egid)) { |
499cbfa1 | 930 | ret = LTTNG_EVENT_CONTEXT_EGID; |
28ab034a | 931 | } else if (!strcmp((char *) context_type, config_event_context_sgid)) { |
499cbfa1 | 932 | ret = LTTNG_EVENT_CONTEXT_SGID; |
28ab034a | 933 | } else if (!strcmp((char *) context_type, config_event_context_vuid)) { |
499cbfa1 | 934 | ret = LTTNG_EVENT_CONTEXT_VUID; |
28ab034a | 935 | } else if (!strcmp((char *) context_type, config_event_context_veuid)) { |
499cbfa1 | 936 | ret = LTTNG_EVENT_CONTEXT_VEUID; |
28ab034a | 937 | } else if (!strcmp((char *) context_type, config_event_context_vsuid)) { |
499cbfa1 | 938 | ret = LTTNG_EVENT_CONTEXT_VSUID; |
28ab034a | 939 | } else if (!strcmp((char *) context_type, config_event_context_vgid)) { |
499cbfa1 | 940 | ret = LTTNG_EVENT_CONTEXT_VGID; |
28ab034a | 941 | } else if (!strcmp((char *) context_type, config_event_context_vegid)) { |
499cbfa1 | 942 | ret = LTTNG_EVENT_CONTEXT_VEGID; |
28ab034a | 943 | } else if (!strcmp((char *) context_type, config_event_context_vsgid)) { |
499cbfa1 | 944 | ret = LTTNG_EVENT_CONTEXT_VSGID; |
dcf266c0 JG |
945 | } else { |
946 | goto error; | |
947 | } | |
948 | ||
949 | return ret; | |
950 | error: | |
951 | return -1; | |
952 | } | |
953 | ||
28ab034a | 954 | static int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) |
dcf266c0 JG |
955 | { |
956 | int ret; | |
957 | xmlNodePtr node; | |
958 | ||
28ab034a | 959 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
960 | if (!strcmp((const char *) node->name, config_element_type)) { |
961 | /* domain type */ | |
962 | xmlChar *node_content = xmlNodeGetContent(node); | |
963 | if (!node_content) { | |
964 | ret = -LTTNG_ERR_NOMEM; | |
965 | goto end; | |
966 | } | |
967 | ||
968 | ret = get_domain_type(node_content); | |
969 | free(node_content); | |
970 | if (ret < 0) { | |
971 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
972 | goto end; | |
973 | } | |
974 | ||
3afa94ae | 975 | domain->type = (lttng_domain_type) ret; |
28ab034a | 976 | } else if (!strcmp((const char *) node->name, config_element_buffer_type)) { |
dcf266c0 JG |
977 | /* buffer type */ |
978 | xmlChar *node_content = xmlNodeGetContent(node); | |
979 | if (!node_content) { | |
980 | ret = -LTTNG_ERR_NOMEM; | |
981 | goto end; | |
982 | } | |
983 | ||
984 | ret = get_buffer_type(node_content); | |
985 | free(node_content); | |
986 | if (ret < 0) { | |
987 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
988 | goto end; | |
989 | } | |
990 | ||
3afa94ae | 991 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
992 | } |
993 | } | |
994 | ret = 0; | |
995 | end: | |
996 | return ret; | |
997 | } | |
998 | ||
28ab034a | 999 | static int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, char **data_uri) |
dcf266c0 JG |
1000 | { |
1001 | xmlNodePtr node; | |
1002 | ||
1003 | for (node = xmlFirstElementChild(net_output_node); node; | |
28ab034a | 1004 | node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1005 | if (!strcmp((const char *) node->name, config_element_control_uri)) { |
1006 | /* control_uri */ | |
1007 | *control_uri = (char *) xmlNodeGetContent(node); | |
1008 | if (!*control_uri) { | |
1009 | break; | |
1010 | } | |
1011 | } else { | |
1012 | /* data_uri */ | |
1013 | *data_uri = (char *) xmlNodeGetContent(node); | |
1014 | if (!*data_uri) { | |
1015 | break; | |
1016 | } | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1021 | } | |
1022 | ||
28ab034a | 1023 | static int process_consumer_output(xmlNodePtr consumer_output_node, struct consumer_output *output) |
dcf266c0 JG |
1024 | { |
1025 | int ret; | |
1026 | xmlNodePtr node; | |
1027 | ||
a0377dfe | 1028 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1029 | |
1030 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
28ab034a | 1031 | node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1032 | if (!strcmp((const char *) node->name, config_element_enabled)) { |
1033 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1034 | ||
1035 | /* enabled */ | |
1036 | if (!enabled_str) { | |
1037 | ret = -LTTNG_ERR_NOMEM; | |
1038 | goto end; | |
1039 | } | |
1040 | ||
1041 | ret = parse_bool(enabled_str, &output->enabled); | |
1042 | free(enabled_str); | |
1043 | if (ret) { | |
1044 | goto end; | |
1045 | } | |
1046 | } else { | |
1047 | xmlNodePtr output_type_node; | |
1048 | ||
1049 | /* destination */ | |
1050 | output_type_node = xmlFirstElementChild(node); | |
1051 | if (!output_type_node) { | |
1052 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1053 | goto end; | |
1054 | } | |
1055 | ||
28ab034a | 1056 | if (!strcmp((const char *) output_type_node->name, config_element_path)) { |
dcf266c0 JG |
1057 | /* path */ |
1058 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1059 | if (!output->path) { | |
1060 | ret = -LTTNG_ERR_NOMEM; | |
1061 | goto end; | |
1062 | } | |
1063 | } else { | |
1064 | /* net_output */ | |
28ab034a JG |
1065 | ret = get_net_output_uris( |
1066 | output_type_node, &output->control_uri, &output->data_uri); | |
dcf266c0 JG |
1067 | if (ret) { |
1068 | goto end; | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | } | |
1073 | ret = 0; | |
1074 | ||
1075 | end: | |
1076 | if (ret) { | |
1077 | free(output->path); | |
1078 | free(output->control_uri); | |
1079 | free(output->data_uri); | |
1080 | memset(output, 0, sizeof(struct consumer_output)); | |
1081 | } | |
1082 | return ret; | |
1083 | } | |
1084 | ||
28ab034a JG |
1085 | static int create_snapshot_session(const char *session_name, |
1086 | xmlNodePtr output_node, | |
1087 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1088 | { |
1089 | int ret; | |
fbc3f258 | 1090 | enum lttng_error_code ret_code; |
cd9adb8b | 1091 | xmlNodePtr node = nullptr; |
dcf266c0 JG |
1092 | xmlNodePtr snapshot_output_list_node; |
1093 | xmlNodePtr snapshot_output_node; | |
fbc3f258 | 1094 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1095 | |
a0377dfe | 1096 | LTTNG_ASSERT(session_name); |
fbc3f258 | 1097 | LTTNG_ASSERT(output_node); |
dcf266c0 | 1098 | |
fbc3f258 JR |
1099 | /* |
1100 | * Use a descriptor without output since consumer output size is not | |
1101 | * exposed by the session descriptor api. | |
1102 | */ | |
1103 | session_descriptor = lttng_session_descriptor_snapshot_create(session_name); | |
1104 | if (session_descriptor == nullptr) { | |
1105 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
1106 | goto end; |
1107 | } | |
1108 | ||
fbc3f258 JR |
1109 | ret_code = lttng_create_session_ext(session_descriptor); |
1110 | if (ret_code != LTTNG_OK) { | |
1111 | ret = -ret_code; | |
dcf266c0 JG |
1112 | goto end; |
1113 | } | |
1114 | ||
1115 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1116 | ||
1117 | /* Parse and create snapshot outputs */ | |
28ab034a JG |
1118 | for (snapshot_output_node = xmlFirstElementChild(snapshot_output_list_node); |
1119 | snapshot_output_node; | |
1120 | snapshot_output_node = xmlNextElementSibling(snapshot_output_node)) { | |
cd9adb8b | 1121 | char *name = nullptr; |
dcf266c0 | 1122 | uint64_t max_size = UINT64_MAX; |
1c9a0b0e | 1123 | struct consumer_output output = {}; |
cd9adb8b JG |
1124 | struct lttng_snapshot_output *snapshot_output = nullptr; |
1125 | const char *control_uri = nullptr; | |
1126 | const char *data_uri = nullptr; | |
1127 | const char *path = nullptr; | |
dcf266c0 JG |
1128 | |
1129 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
28ab034a JG |
1130 | node = xmlNextElementSibling(node)) { |
1131 | if (!strcmp((const char *) node->name, config_element_name)) { | |
dcf266c0 JG |
1132 | /* name */ |
1133 | name = (char *) xmlNodeGetContent(node); | |
1134 | if (!name) { | |
1135 | ret = -LTTNG_ERR_NOMEM; | |
1136 | goto error_snapshot_output; | |
1137 | } | |
28ab034a | 1138 | } else if (!strcmp((const char *) node->name, config_element_max_size)) { |
dcf266c0 JG |
1139 | xmlChar *content = xmlNodeGetContent(node); |
1140 | ||
1141 | /* max_size */ | |
1142 | if (!content) { | |
1143 | ret = -LTTNG_ERR_NOMEM; | |
1144 | goto error_snapshot_output; | |
1145 | } | |
1146 | ret = parse_uint(content, &max_size); | |
1147 | free(content); | |
1148 | if (ret) { | |
1149 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1150 | goto error_snapshot_output; | |
1151 | } | |
1152 | } else { | |
1153 | /* consumer_output */ | |
1154 | ret = process_consumer_output(node, &output); | |
1155 | if (ret) { | |
1156 | goto error_snapshot_output; | |
1157 | } | |
1158 | } | |
1159 | } | |
1160 | ||
21a3f144 JR |
1161 | control_uri = output.control_uri; |
1162 | data_uri = output.data_uri; | |
1163 | path = output.path; | |
1164 | ||
1b08cbce JR |
1165 | if (overrides) { |
1166 | if (overrides->path_url) { | |
1b08cbce | 1167 | path = overrides->path_url; |
21a3f144 | 1168 | /* Control/data_uri are null */ |
cd9adb8b JG |
1169 | control_uri = nullptr; |
1170 | data_uri = nullptr; | |
1b08cbce JR |
1171 | } else { |
1172 | if (overrides->ctrl_url) { | |
1b08cbce | 1173 | control_uri = overrides->ctrl_url; |
21a3f144 | 1174 | /* path is null */ |
cd9adb8b | 1175 | path = nullptr; |
1b08cbce JR |
1176 | } |
1177 | if (overrides->data_url) { | |
1b08cbce | 1178 | data_uri = overrides->data_url; |
21a3f144 | 1179 | /* path is null */ |
cd9adb8b | 1180 | path = nullptr; |
1b08cbce JR |
1181 | } |
1182 | } | |
1b08cbce JR |
1183 | } |
1184 | ||
dcf266c0 JG |
1185 | snapshot_output = lttng_snapshot_output_create(); |
1186 | if (!snapshot_output) { | |
1187 | ret = -LTTNG_ERR_NOMEM; | |
1188 | goto error_snapshot_output; | |
1189 | } | |
1190 | ||
1191 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1192 | if (ret) { | |
1193 | goto error_snapshot_output; | |
1194 | } | |
1195 | ||
1196 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1197 | if (ret) { | |
1198 | goto error_snapshot_output; | |
1199 | } | |
1200 | ||
1b08cbce | 1201 | if (path) { |
28ab034a | 1202 | ret = lttng_snapshot_output_set_ctrl_url(path, snapshot_output); |
dcf266c0 JG |
1203 | if (ret) { |
1204 | goto error_snapshot_output; | |
1205 | } | |
1206 | } else { | |
1b08cbce JR |
1207 | if (control_uri) { |
1208 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
28ab034a | 1209 | snapshot_output); |
dcf266c0 JG |
1210 | if (ret) { |
1211 | goto error_snapshot_output; | |
1212 | } | |
1213 | } | |
1214 | ||
1b08cbce | 1215 | if (data_uri) { |
28ab034a | 1216 | ret = lttng_snapshot_output_set_data_url(data_uri, snapshot_output); |
dcf266c0 JG |
1217 | if (ret) { |
1218 | goto error_snapshot_output; | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
28ab034a | 1224 | error_snapshot_output: |
dcf266c0 JG |
1225 | free(name); |
1226 | free(output.path); | |
1227 | free(output.control_uri); | |
1228 | free(output.data_uri); | |
1229 | lttng_snapshot_output_destroy(snapshot_output); | |
1230 | if (ret) { | |
1231 | goto end; | |
1232 | } | |
1233 | } | |
1234 | end: | |
fbc3f258 | 1235 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1236 | return ret; |
1237 | } | |
1238 | ||
28ab034a JG |
1239 | static int create_session(const char *name, |
1240 | xmlNodePtr output_node, | |
1241 | uint64_t live_timer_interval, | |
1242 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 | 1243 | { |
fbc3f258 JR |
1244 | int ret = 0; |
1245 | enum lttng_error_code ret_code; | |
1c9a0b0e | 1246 | struct consumer_output output = {}; |
dcf266c0 | 1247 | xmlNodePtr consumer_output_node; |
cd9adb8b JG |
1248 | const char *control_uri = nullptr; |
1249 | const char *data_uri = nullptr; | |
1250 | const char *path = nullptr; | |
fbc3f258 | 1251 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1252 | |
a0377dfe | 1253 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1254 | |
1255 | if (output_node) { | |
1256 | consumer_output_node = xmlFirstElementChild(output_node); | |
1257 | if (!consumer_output_node) { | |
1258 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1259 | goto end; | |
1260 | } | |
1261 | ||
1262 | if (strcmp((const char *) consumer_output_node->name, | |
5c7248cd | 1263 | config_element_consumer_output) != 0) { |
dcf266c0 | 1264 | WARN("Invalid output type, expected %s node", |
28ab034a | 1265 | config_element_consumer_output); |
dcf266c0 JG |
1266 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1267 | goto end; | |
1268 | } | |
1269 | ||
1270 | ret = process_consumer_output(consumer_output_node, &output); | |
1271 | if (ret) { | |
1272 | goto end; | |
1273 | } | |
1274 | } | |
1275 | ||
21a3f144 JR |
1276 | control_uri = output.control_uri; |
1277 | data_uri = output.data_uri; | |
1278 | path = output.path; | |
1279 | ||
1b08cbce JR |
1280 | /* Check for override and apply them */ |
1281 | if (overrides) { | |
1282 | if (overrides->path_url) { | |
1b08cbce | 1283 | path = overrides->path_url; |
21a3f144 | 1284 | /* control/data_uri are null */; |
cd9adb8b JG |
1285 | control_uri = nullptr; |
1286 | data_uri = nullptr; | |
1b08cbce JR |
1287 | } else { |
1288 | if (overrides->ctrl_url) { | |
1b08cbce | 1289 | control_uri = overrides->ctrl_url; |
21a3f144 | 1290 | /* path is null */ |
cd9adb8b | 1291 | path = nullptr; |
1b08cbce JR |
1292 | } |
1293 | if (overrides->data_url) { | |
1b08cbce | 1294 | data_uri = overrides->data_url; |
21a3f144 | 1295 | /* path is null */ |
cd9adb8b | 1296 | path = nullptr; |
1b08cbce JR |
1297 | } |
1298 | } | |
1b08cbce JR |
1299 | } |
1300 | ||
1301 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { | |
dcf266c0 JG |
1302 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1303 | goto end; | |
1304 | } | |
1305 | ||
1b08cbce | 1306 | if (control_uri || data_uri) { |
dcf266c0 JG |
1307 | /* network destination */ |
1308 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1309 | /* |
1310 | * URLs are provided for sure since the test above make sure that | |
1311 | * with a live timer the data and control URIs are provided. So, | |
1312 | * NULL is passed here and will be set right after. | |
1313 | */ | |
fbc3f258 | 1314 | session_descriptor = lttng_session_descriptor_live_network_create( |
28ab034a | 1315 | name, control_uri, data_uri, live_timer_interval); |
dcf266c0 | 1316 | } else { |
fbc3f258 | 1317 | session_descriptor = lttng_session_descriptor_network_create( |
28ab034a | 1318 | name, control_uri, data_uri); |
dcf266c0 | 1319 | } |
95681498 | 1320 | |
fbc3f258 JR |
1321 | } else if (path != nullptr) { |
1322 | session_descriptor = lttng_session_descriptor_local_create(name, path); | |
dcf266c0 | 1323 | } else { |
fbc3f258 JR |
1324 | /* No output */ |
1325 | session_descriptor = lttng_session_descriptor_create(name); | |
1326 | } | |
1327 | ||
1328 | if (session_descriptor == nullptr) { | |
1329 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1330 | goto end; | |
dcf266c0 | 1331 | } |
fbc3f258 JR |
1332 | |
1333 | ret_code = lttng_create_session_ext(session_descriptor); | |
1334 | if (ret_code != LTTNG_OK) { | |
1335 | ret = -ret_code; | |
1336 | goto end; | |
1337 | } | |
1338 | ||
dcf266c0 JG |
1339 | end: |
1340 | free(output.path); | |
1341 | free(output.control_uri); | |
1342 | free(output.data_uri); | |
fbc3f258 | 1343 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1344 | return ret; |
1345 | } | |
c1e83fb4 | 1346 | |
28ab034a JG |
1347 | static struct lttng_userspace_probe_location * |
1348 | process_userspace_probe_function_attribute_node(xmlNodePtr attribute_node) | |
c1e83fb4 | 1349 | { |
c1e83fb4 | 1350 | xmlNodePtr function_attribute_node; |
cd9adb8b JG |
1351 | char *function_name = nullptr, *binary_path = nullptr; |
1352 | struct lttng_userspace_probe_location *location = nullptr; | |
1353 | struct lttng_userspace_probe_location_lookup_method *lookup_method = nullptr; | |
c1e83fb4 FD |
1354 | |
1355 | /* | |
1356 | * Process userspace probe location function attributes. The order of | |
1357 | * the fields are not guaranteed so we need to iterate over all fields | |
1358 | * and check at the end if everything we need for this location type is | |
1359 | * there. | |
1360 | */ | |
28ab034a JG |
1361 | for (function_attribute_node = xmlFirstElementChild(attribute_node); |
1362 | function_attribute_node; | |
1363 | function_attribute_node = xmlNextElementSibling(function_attribute_node)) { | |
c1e83fb4 FD |
1364 | /* Handle function name, binary path and lookup method. */ |
1365 | if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1366 | config_element_userspace_probe_function_location_function_name)) { |
717d2dba | 1367 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1368 | if (!function_name) { |
c1e83fb4 FD |
1369 | goto error; |
1370 | } | |
1371 | } else if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1372 | config_element_userspace_probe_location_binary_path)) { |
717d2dba | 1373 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1374 | if (!binary_path) { |
c1e83fb4 FD |
1375 | goto error; |
1376 | } | |
1377 | } else if (!strcmp((const char *) function_attribute_node->name, | |
28ab034a | 1378 | config_element_userspace_probe_lookup)) { |
717d2dba | 1379 | char *lookup_method_name; |
c1e83fb4 | 1380 | |
28ab034a | 1381 | lookup_method_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1382 | if (!lookup_method_name) { |
c1e83fb4 FD |
1383 | goto error; |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * function_default lookup method defaults to | |
1388 | * function_elf lookup method at the moment. | |
1389 | */ | |
28ab034a JG |
1390 | if (!strcmp(lookup_method_name, |
1391 | config_element_userspace_probe_lookup_function_elf) || | |
1392 | !strcmp(lookup_method_name, | |
1393 | config_element_userspace_probe_lookup_function_default)) { | |
1394 | lookup_method = | |
1395 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
c1e83fb4 FD |
1396 | if (!lookup_method) { |
1397 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1398 | } |
1399 | } else { | |
717d2dba JG |
1400 | WARN("Unknown function lookup method"); |
1401 | } | |
1402 | ||
1403 | free(lookup_method_name); | |
1404 | if (!lookup_method) { | |
c1e83fb4 FD |
1405 | goto error; |
1406 | } | |
1407 | } else { | |
1408 | goto error; | |
1409 | } | |
1410 | ||
1411 | /* Check if all the necessary fields were found. */ | |
1412 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1413 | /* Ownership of lookup_method is transferred. */ |
28ab034a JG |
1414 | location = lttng_userspace_probe_location_function_create( |
1415 | binary_path, function_name, lookup_method); | |
cd9adb8b | 1416 | lookup_method = nullptr; |
717d2dba | 1417 | goto error; |
c1e83fb4 FD |
1418 | } |
1419 | } | |
1420 | error: | |
717d2dba | 1421 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1422 | free(binary_path); |
1423 | free(function_name); | |
c1e83fb4 FD |
1424 | return location; |
1425 | } | |
1426 | ||
28ab034a JG |
1427 | static struct lttng_userspace_probe_location * |
1428 | process_userspace_probe_tracepoint_attribute_node(xmlNodePtr attribute_node) | |
c1e83fb4 | 1429 | { |
c1e83fb4 | 1430 | xmlNodePtr tracepoint_attribute_node; |
cd9adb8b JG |
1431 | char *probe_name = nullptr, *provider_name = nullptr, *binary_path = nullptr; |
1432 | struct lttng_userspace_probe_location *location = nullptr; | |
1433 | struct lttng_userspace_probe_location_lookup_method *lookup_method = nullptr; | |
c1e83fb4 FD |
1434 | |
1435 | /* | |
1436 | * Process userspace probe location tracepoint attributes. The order of | |
1437 | * the fields are not guaranteed so we need to iterate over all fields | |
1438 | * and check at the end if everything we need for this location type is | |
1439 | * there. | |
1440 | */ | |
28ab034a JG |
1441 | for (tracepoint_attribute_node = xmlFirstElementChild(attribute_node); |
1442 | tracepoint_attribute_node; | |
1443 | tracepoint_attribute_node = xmlNextElementSibling(tracepoint_attribute_node)) { | |
c1e83fb4 | 1444 | if (!strcmp((const char *) tracepoint_attribute_node->name, |
28ab034a | 1445 | config_element_userspace_probe_tracepoint_location_probe_name)) { |
717d2dba | 1446 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1447 | if (!probe_name) { |
c1e83fb4 FD |
1448 | goto error; |
1449 | } | |
1450 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1451 | config_element_userspace_probe_tracepoint_location_provider_name)) { |
717d2dba | 1452 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1453 | if (!provider_name) { |
c1e83fb4 FD |
1454 | goto error; |
1455 | } | |
1456 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1457 | config_element_userspace_probe_location_binary_path)) { |
717d2dba | 1458 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1459 | if (!binary_path) { |
c1e83fb4 FD |
1460 | goto error; |
1461 | } | |
1462 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
28ab034a | 1463 | config_element_userspace_probe_lookup)) { |
717d2dba | 1464 | char *lookup_method_name; |
c1e83fb4 | 1465 | |
28ab034a | 1466 | lookup_method_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1467 | if (!lookup_method_name) { |
c1e83fb4 FD |
1468 | goto error; |
1469 | } | |
1470 | ||
1471 | if (!strcmp(lookup_method_name, | |
28ab034a | 1472 | config_element_userspace_probe_lookup_tracepoint_sdt)) { |
c1e83fb4 FD |
1473 | lookup_method = |
1474 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1475 | if (!lookup_method) { | |
1476 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1477 | } |
1478 | } else { | |
717d2dba JG |
1479 | WARN("Unknown tracepoint lookup method"); |
1480 | } | |
1481 | ||
1482 | free(lookup_method_name); | |
1483 | if (!lookup_method) { | |
c1e83fb4 FD |
1484 | goto error; |
1485 | } | |
1486 | } else { | |
717d2dba | 1487 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1488 | goto error; |
1489 | } | |
1490 | ||
1491 | /* Check if all the necessary fields were found. */ | |
1492 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1493 | /* Ownership of lookup_method is transferred. */ |
28ab034a JG |
1494 | location = lttng_userspace_probe_location_tracepoint_create( |
1495 | binary_path, provider_name, probe_name, lookup_method); | |
cd9adb8b | 1496 | lookup_method = nullptr; |
717d2dba | 1497 | goto error; |
c1e83fb4 FD |
1498 | } |
1499 | } | |
1500 | error: | |
717d2dba | 1501 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1502 | free(binary_path); |
c1e83fb4 | 1503 | free(provider_name); |
717d2dba | 1504 | free(probe_name); |
c1e83fb4 FD |
1505 | return location; |
1506 | } | |
1507 | ||
28ab034a JG |
1508 | static int process_probe_attribute_node(xmlNodePtr probe_attribute_node, |
1509 | struct lttng_event_probe_attr *attr) | |
dcf266c0 JG |
1510 | { |
1511 | int ret; | |
1512 | ||
a0377dfe FD |
1513 | LTTNG_ASSERT(probe_attribute_node); |
1514 | LTTNG_ASSERT(attr); | |
dcf266c0 | 1515 | |
28ab034a | 1516 | if (!strcmp((const char *) probe_attribute_node->name, config_element_address)) { |
dcf266c0 JG |
1517 | xmlChar *content; |
1518 | uint64_t addr = 0; | |
1519 | ||
1520 | /* addr */ | |
1521 | content = xmlNodeGetContent(probe_attribute_node); | |
1522 | if (!content) { | |
1523 | ret = -LTTNG_ERR_NOMEM; | |
1524 | goto end; | |
1525 | } | |
1526 | ||
1527 | ret = parse_uint(content, &addr); | |
1528 | free(content); | |
1529 | if (ret) { | |
1530 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1531 | goto end; | |
1532 | } | |
1533 | ||
1534 | attr->addr = addr; | |
28ab034a | 1535 | } else if (!strcmp((const char *) probe_attribute_node->name, config_element_offset)) { |
dcf266c0 JG |
1536 | xmlChar *content; |
1537 | uint64_t offset = 0; | |
1538 | ||
1539 | /* offset */ | |
1540 | content = xmlNodeGetContent(probe_attribute_node); | |
1541 | if (!content) { | |
1542 | ret = -LTTNG_ERR_NOMEM; | |
1543 | goto end; | |
1544 | } | |
1545 | ||
1546 | ret = parse_uint(content, &offset); | |
1547 | free(content); | |
1548 | if (ret) { | |
1549 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1550 | goto end; | |
1551 | } | |
1552 | ||
1553 | attr->offset = offset; | |
28ab034a | 1554 | } else if (!strcmp((const char *) probe_attribute_node->name, config_element_symbol_name)) { |
dcf266c0 | 1555 | xmlChar *content; |
dcf266c0 JG |
1556 | |
1557 | /* symbol_name */ | |
1558 | content = xmlNodeGetContent(probe_attribute_node); | |
1559 | if (!content) { | |
1560 | ret = -LTTNG_ERR_NOMEM; | |
1561 | goto end; | |
1562 | } | |
1563 | ||
28ab034a JG |
1564 | ret = lttng_strncpy( |
1565 | attr->symbol_name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 | 1566 | if (ret == -1) { |
28ab034a JG |
1567 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", |
1568 | (const char *) content, | |
1569 | strlen((const char *) content), | |
1570 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1571 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1572 | free(content); | |
1573 | goto end; | |
1574 | } | |
dcf266c0 JG |
1575 | free(content); |
1576 | } | |
1577 | ret = 0; | |
1578 | end: | |
1579 | return ret; | |
1580 | } | |
1581 | ||
28ab034a JG |
1582 | static int process_event_node(xmlNodePtr event_node, |
1583 | struct lttng_handle *handle, | |
1584 | const char *channel_name, | |
1585 | const enum process_event_node_phase phase) | |
dcf266c0 | 1586 | { |
d7b645e2 | 1587 | int ret = 0, i; |
dcf266c0 | 1588 | xmlNodePtr node; |
91744e14 | 1589 | struct lttng_event *event; |
cd9adb8b | 1590 | char **exclusions = nullptr; |
dcf266c0 | 1591 | unsigned long exclusion_count = 0; |
cd9adb8b | 1592 | char *filter_expression = nullptr; |
dcf266c0 | 1593 | |
a0377dfe FD |
1594 | LTTNG_ASSERT(event_node); |
1595 | LTTNG_ASSERT(handle); | |
1596 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1597 | |
91744e14 FD |
1598 | event = lttng_event_create(); |
1599 | if (!event) { | |
1600 | ret = -LTTNG_ERR_NOMEM; | |
1601 | goto end; | |
1602 | } | |
dcf266c0 | 1603 | |
f40eba3d | 1604 | /* Initialize default log level which varies by domain */ |
28ab034a | 1605 | switch (handle->domain.type) { |
f40eba3d | 1606 | case LTTNG_DOMAIN_JUL: |
91744e14 | 1607 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1608 | break; |
1609 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1610 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1611 | break; |
1612 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1613 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1614 | break; |
1615 | case LTTNG_DOMAIN_UST: | |
1616 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1617 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1618 | break; |
1619 | default: | |
a0377dfe | 1620 | abort(); |
f40eba3d JG |
1621 | } |
1622 | ||
28ab034a | 1623 | for (node = xmlFirstElementChild(event_node); node; node = xmlNextElementSibling(node)) { |
dcf266c0 JG |
1624 | if (!strcmp((const char *) node->name, config_element_name)) { |
1625 | xmlChar *content; | |
dcf266c0 JG |
1626 | |
1627 | /* name */ | |
1628 | content = xmlNodeGetContent(node); | |
1629 | if (!content) { | |
1630 | ret = -LTTNG_ERR_NOMEM; | |
1631 | goto end; | |
1632 | } | |
1633 | ||
28ab034a JG |
1634 | ret = lttng_strncpy( |
1635 | event->name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 JG |
1636 | if (ret == -1) { |
1637 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
1638 | (const char *) content, |
1639 | strlen((const char *) content), | |
1640 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1641 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1642 | free(content); | |
1643 | goto end; | |
1644 | } | |
dcf266c0 | 1645 | free(content); |
28ab034a | 1646 | } else if (!strcmp((const char *) node->name, config_element_enabled)) { |
dcf266c0 JG |
1647 | xmlChar *content = xmlNodeGetContent(node); |
1648 | ||
1649 | /* enabled */ | |
1650 | if (!content) { | |
1651 | ret = -LTTNG_ERR_NOMEM; | |
1652 | goto end; | |
1653 | } | |
1654 | ||
91744e14 | 1655 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1656 | free(content); |
1657 | if (ret) { | |
1658 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1659 | goto end; | |
1660 | } | |
28ab034a | 1661 | } else if (!strcmp((const char *) node->name, config_element_type)) { |
dcf266c0 JG |
1662 | xmlChar *content = xmlNodeGetContent(node); |
1663 | ||
1664 | /* type */ | |
1665 | if (!content) { | |
1666 | ret = -LTTNG_ERR_NOMEM; | |
1667 | goto end; | |
1668 | } | |
1669 | ||
1670 | ret = get_event_type(content); | |
1671 | free(content); | |
1672 | if (ret < 0) { | |
1673 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1674 | goto end; | |
1675 | } | |
1676 | ||
3afa94ae | 1677 | event->type = (lttng_event_type) ret; |
28ab034a | 1678 | } else if (!strcmp((const char *) node->name, config_element_loglevel_type)) { |
dcf266c0 JG |
1679 | xmlChar *content = xmlNodeGetContent(node); |
1680 | ||
1681 | /* loglevel_type */ | |
1682 | if (!content) { | |
1683 | ret = -LTTNG_ERR_NOMEM; | |
1684 | goto end; | |
1685 | } | |
1686 | ||
1687 | ret = get_loglevel_type(content); | |
1688 | free(content); | |
1689 | if (ret < 0) { | |
1690 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1691 | goto end; | |
1692 | } | |
1693 | ||
3afa94ae | 1694 | event->loglevel_type = (lttng_loglevel_type) ret; |
28ab034a | 1695 | } else if (!strcmp((const char *) node->name, config_element_loglevel)) { |
dcf266c0 JG |
1696 | xmlChar *content; |
1697 | int64_t loglevel = 0; | |
1698 | ||
1699 | /* loglevel */ | |
1700 | content = xmlNodeGetContent(node); | |
1701 | if (!content) { | |
1702 | ret = -LTTNG_ERR_NOMEM; | |
1703 | goto end; | |
1704 | } | |
1705 | ||
1706 | ret = parse_int(content, &loglevel); | |
1707 | free(content); | |
1708 | if (ret) { | |
1709 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1710 | goto end; | |
1711 | } | |
1712 | ||
1713 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1714 | WARN("loglevel out of range."); | |
1715 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1716 | goto end; | |
1717 | } | |
1718 | ||
91744e14 | 1719 | event->loglevel = loglevel; |
28ab034a JG |
1720 | } else if (!strcmp((const char *) node->name, config_element_filter)) { |
1721 | xmlChar *content = xmlNodeGetContent(node); | |
dcf266c0 JG |
1722 | |
1723 | /* filter */ | |
1724 | if (!content) { | |
1725 | ret = -LTTNG_ERR_NOMEM; | |
1726 | goto end; | |
1727 | } | |
1728 | ||
02d8ac3d | 1729 | free(filter_expression); |
dcf266c0 JG |
1730 | filter_expression = strdup((char *) content); |
1731 | free(content); | |
1732 | if (!filter_expression) { | |
1733 | ret = -LTTNG_ERR_NOMEM; | |
1734 | goto end; | |
1735 | } | |
28ab034a | 1736 | } else if (!strcmp((const char *) node->name, config_element_exclusions)) { |
dcf266c0 JG |
1737 | xmlNodePtr exclusion_node; |
1738 | int exclusion_index = 0; | |
1739 | ||
1740 | /* exclusions */ | |
1741 | if (exclusions) { | |
1742 | /* | |
1743 | * Exclusions has already been initialized, | |
1744 | * invalid file. | |
1745 | */ | |
1746 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1747 | goto end; | |
1748 | } | |
1749 | ||
1750 | exclusion_count = xmlChildElementCount(node); | |
1751 | if (!exclusion_count) { | |
1752 | continue; | |
1753 | } | |
1754 | ||
64803277 | 1755 | exclusions = calloc<char *>(exclusion_count); |
dcf266c0 JG |
1756 | if (!exclusions) { |
1757 | exclusion_count = 0; | |
1758 | ret = -LTTNG_ERR_NOMEM; | |
1759 | goto end; | |
1760 | } | |
1761 | ||
1762 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
28ab034a JG |
1763 | exclusion_node = xmlNextElementSibling(exclusion_node)) { |
1764 | xmlChar *content = xmlNodeGetContent(exclusion_node); | |
dcf266c0 JG |
1765 | |
1766 | if (!content) { | |
1767 | ret = -LTTNG_ERR_NOMEM; | |
1768 | goto end; | |
1769 | } | |
1770 | ||
1771 | exclusions[exclusion_index] = strdup((const char *) content); | |
1772 | free(content); | |
1773 | if (!exclusions[exclusion_index]) { | |
1774 | ret = -LTTNG_ERR_NOMEM; | |
1775 | goto end; | |
1776 | } | |
1777 | exclusion_index++; | |
1778 | } | |
1779 | ||
91744e14 | 1780 | event->exclusion = 1; |
28ab034a | 1781 | } else if (!strcmp((const char *) node->name, config_element_attributes)) { |
dcf266c0 JG |
1782 | xmlNodePtr attribute_node = xmlFirstElementChild(node); |
1783 | ||
1784 | /* attributes */ | |
1785 | if (!attribute_node) { | |
1786 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1787 | goto end; | |
1788 | } | |
1789 | ||
c1e83fb4 | 1790 | if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1791 | config_element_probe_attributes)) { |
dcf266c0 JG |
1792 | xmlNodePtr probe_attribute_node; |
1793 | ||
1794 | /* probe_attributes */ | |
28ab034a JG |
1795 | for (probe_attribute_node = xmlFirstElementChild(attribute_node); |
1796 | probe_attribute_node; | |
1797 | probe_attribute_node = | |
1798 | xmlNextElementSibling(probe_attribute_node)) { | |
dcf266c0 | 1799 | ret = process_probe_attribute_node(probe_attribute_node, |
28ab034a | 1800 | &event->attr.probe); |
dcf266c0 JG |
1801 | if (ret) { |
1802 | goto end; | |
1803 | } | |
1804 | } | |
c1e83fb4 | 1805 | } else if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1806 | config_element_function_attributes)) { |
dcf266c0 JG |
1807 | size_t sym_len; |
1808 | xmlChar *content; | |
1809 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1810 | ||
1811 | /* function_attributes */ | |
1812 | content = xmlNodeGetContent(symbol_node); | |
1813 | if (!content) { | |
1814 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1815 | goto end; | |
1816 | } | |
1817 | ||
1818 | sym_len = strlen((char *) content); | |
1819 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1820 | WARN("Function name too long."); | |
1821 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1822 | free(content); | |
1823 | goto end; | |
1824 | } | |
1825 | ||
d2e67842 | 1826 | ret = lttng_strncpy( |
28ab034a | 1827 | event->attr.ftrace.symbol_name, (char *) content, sym_len); |
d2e67842 JG |
1828 | if (ret == -1) { |
1829 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1830 | free(content); | |
1831 | goto end; | |
1832 | } | |
dcf266c0 | 1833 | free(content); |
c1e83fb4 | 1834 | } else if (!strcmp((const char *) attribute_node->name, |
28ab034a | 1835 | config_element_userspace_probe_tracepoint_attributes)) { |
c1e83fb4 FD |
1836 | struct lttng_userspace_probe_location *location; |
1837 | ||
28ab034a JG |
1838 | location = process_userspace_probe_tracepoint_attribute_node( |
1839 | attribute_node); | |
c1e83fb4 FD |
1840 | if (!location) { |
1841 | WARN("Error processing userspace probe tracepoint attribute"); | |
1842 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1843 | goto end; | |
1844 | } | |
28ab034a | 1845 | ret = lttng_event_set_userspace_probe_location(event, location); |
c1e83fb4 FD |
1846 | if (ret) { |
1847 | WARN("Error setting userspace probe location field"); | |
28ab034a | 1848 | lttng_userspace_probe_location_destroy(location); |
c1e83fb4 FD |
1849 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1850 | goto end; | |
1851 | } | |
1852 | } else if (!strcmp((const char *) attribute_node->name, | |
28ab034a | 1853 | config_element_userspace_probe_function_attributes)) { |
c1e83fb4 FD |
1854 | struct lttng_userspace_probe_location *location; |
1855 | ||
28ab034a JG |
1856 | location = process_userspace_probe_function_attribute_node( |
1857 | attribute_node); | |
c1e83fb4 FD |
1858 | if (!location) { |
1859 | WARN("Error processing userspace probe function attribute"); | |
1860 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1861 | goto end; | |
1862 | } | |
1863 | ||
28ab034a | 1864 | ret = lttng_event_set_userspace_probe_location(event, location); |
c1e83fb4 FD |
1865 | if (ret) { |
1866 | WARN("Error setting userspace probe location field"); | |
28ab034a | 1867 | lttng_userspace_probe_location_destroy(location); |
c1e83fb4 FD |
1868 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1869 | goto end; | |
1870 | } | |
1871 | } else { | |
1872 | /* Unknown event attribute. */ | |
1873 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1874 | goto end; | |
dcf266c0 JG |
1875 | } |
1876 | } | |
1877 | } | |
1878 | ||
91744e14 | 1879 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
28ab034a JG |
1880 | ret = lttng_enable_event_with_exclusions( |
1881 | handle, event, channel_name, filter_expression, exclusion_count, exclusions); | |
d7b645e2 | 1882 | if (ret < 0) { |
91744e14 | 1883 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
1884 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1885 | goto end; | |
1886 | } | |
065321e9 | 1887 | } |
d2e67842 | 1888 | ret = 0; |
dcf266c0 JG |
1889 | end: |
1890 | for (i = 0; i < exclusion_count; i++) { | |
1891 | free(exclusions[i]); | |
1892 | } | |
1893 | ||
b33f872b | 1894 | lttng_event_destroy(event); |
dcf266c0 JG |
1895 | free(exclusions); |
1896 | free(filter_expression); | |
1897 | return ret; | |
1898 | } | |
1899 | ||
28ab034a JG |
1900 | static int |
1901 | process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, const char *channel_name) | |
dcf266c0 JG |
1902 | { |
1903 | int ret = 0; | |
d7b645e2 | 1904 | struct lttng_event event; |
dcf266c0 JG |
1905 | xmlNodePtr node; |
1906 | ||
a0377dfe FD |
1907 | LTTNG_ASSERT(events_node); |
1908 | LTTNG_ASSERT(handle); | |
1909 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1910 | |
28ab034a | 1911 | for (node = xmlFirstElementChild(events_node); node; node = xmlNextElementSibling(node)) { |
d7b645e2 | 1912 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
1913 | if (ret) { |
1914 | goto end; | |
1915 | } | |
1916 | } | |
d7b645e2 JR |
1917 | |
1918 | /* | |
1919 | * Disable all events to enable only the necessary events. | |
1920 | * Limitations regarding lttng_disable_events and tuple descriptor | |
1921 | * force this approach. | |
1922 | */ | |
1923 | memset(&event, 0, sizeof(event)); | |
1924 | event.loglevel = -1; | |
1925 | event.type = LTTNG_EVENT_ALL; | |
cd9adb8b | 1926 | ret = lttng_disable_event_ext(handle, &event, channel_name, nullptr); |
d7b645e2 JR |
1927 | if (ret) { |
1928 | goto end; | |
1929 | } | |
1930 | ||
28ab034a | 1931 | for (node = xmlFirstElementChild(events_node); node; node = xmlNextElementSibling(node)) { |
d7b645e2 JR |
1932 | ret = process_event_node(node, handle, channel_name, ENABLE); |
1933 | if (ret) { | |
1934 | goto end; | |
1935 | } | |
1936 | } | |
1937 | ||
dcf266c0 JG |
1938 | end: |
1939 | return ret; | |
1940 | } | |
1941 | ||
28ab034a JG |
1942 | static int process_channel_attr_node(xmlNodePtr attr_node, |
1943 | struct lttng_channel *channel, | |
1944 | xmlNodePtr *contexts_node, | |
1945 | xmlNodePtr *events_node) | |
dcf266c0 JG |
1946 | { |
1947 | int ret; | |
1948 | ||
a0377dfe FD |
1949 | LTTNG_ASSERT(attr_node); |
1950 | LTTNG_ASSERT(channel); | |
1951 | LTTNG_ASSERT(contexts_node); | |
1952 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
1953 | |
1954 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
1955 | xmlChar *content; | |
dcf266c0 JG |
1956 | |
1957 | /* name */ | |
1958 | content = xmlNodeGetContent(attr_node); | |
1959 | if (!content) { | |
1960 | ret = -LTTNG_ERR_NOMEM; | |
1961 | goto end; | |
1962 | } | |
1963 | ||
28ab034a | 1964 | ret = lttng_strncpy(channel->name, (const char *) content, LTTNG_SYMBOL_NAME_LEN); |
d2e67842 JG |
1965 | if (ret == -1) { |
1966 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
1967 | (const char *) content, |
1968 | strlen((const char *) content), | |
1969 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1970 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1971 | free(content); | |
1972 | goto end; | |
1973 | } | |
dcf266c0 | 1974 | free(content); |
28ab034a | 1975 | } else if (!strcmp((const char *) attr_node->name, config_element_enabled)) { |
dcf266c0 JG |
1976 | xmlChar *content; |
1977 | int enabled; | |
1978 | ||
1979 | /* enabled */ | |
1980 | content = xmlNodeGetContent(attr_node); | |
1981 | if (!content) { | |
1982 | ret = -LTTNG_ERR_NOMEM; | |
1983 | goto end; | |
1984 | } | |
1985 | ||
1986 | ret = parse_bool(content, &enabled); | |
1987 | free(content); | |
1988 | if (ret) { | |
1989 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1990 | goto end; | |
1991 | } | |
1992 | ||
1993 | channel->enabled = enabled; | |
28ab034a | 1994 | } else if (!strcmp((const char *) attr_node->name, config_element_overwrite_mode)) { |
dcf266c0 JG |
1995 | xmlChar *content; |
1996 | ||
1997 | /* overwrite_mode */ | |
1998 | content = xmlNodeGetContent(attr_node); | |
1999 | if (!content) { | |
2000 | ret = -LTTNG_ERR_NOMEM; | |
2001 | goto end; | |
2002 | } | |
2003 | ||
2004 | ret = get_overwrite_mode(content); | |
2005 | free(content); | |
2006 | if (ret < 0) { | |
2007 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2008 | goto end; | |
2009 | } | |
2010 | ||
2011 | channel->attr.overwrite = ret; | |
28ab034a | 2012 | } else if (!strcmp((const char *) attr_node->name, config_element_subbuf_size)) { |
dcf266c0 JG |
2013 | xmlChar *content; |
2014 | ||
2015 | /* subbuffer_size */ | |
2016 | content = xmlNodeGetContent(attr_node); | |
2017 | if (!content) { | |
2018 | ret = -LTTNG_ERR_NOMEM; | |
2019 | goto end; | |
2020 | } | |
2021 | ||
2022 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2023 | free(content); | |
2024 | if (ret) { | |
2025 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2026 | goto end; | |
2027 | } | |
28ab034a | 2028 | } else if (!strcmp((const char *) attr_node->name, config_element_num_subbuf)) { |
dcf266c0 JG |
2029 | xmlChar *content; |
2030 | ||
2031 | /* subbuffer_count */ | |
2032 | content = xmlNodeGetContent(attr_node); | |
2033 | if (!content) { | |
2034 | ret = -LTTNG_ERR_NOMEM; | |
2035 | goto end; | |
2036 | } | |
2037 | ||
2038 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2039 | free(content); | |
2040 | if (ret) { | |
2041 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2042 | goto end; | |
2043 | } | |
28ab034a | 2044 | } else if (!strcmp((const char *) attr_node->name, config_element_switch_timer_interval)) { |
dcf266c0 JG |
2045 | xmlChar *content; |
2046 | uint64_t switch_timer_interval = 0; | |
2047 | ||
2048 | /* switch_timer_interval */ | |
2049 | content = xmlNodeGetContent(attr_node); | |
2050 | if (!content) { | |
2051 | ret = -LTTNG_ERR_NOMEM; | |
2052 | goto end; | |
2053 | } | |
2054 | ||
2055 | ret = parse_uint(content, &switch_timer_interval); | |
2056 | free(content); | |
2057 | if (ret) { | |
2058 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2059 | goto end; | |
2060 | } | |
2061 | ||
2062 | if (switch_timer_interval > UINT_MAX) { | |
2063 | WARN("switch_timer_interval out of range."); | |
2064 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2065 | goto end; | |
2066 | } | |
2067 | ||
28ab034a JG |
2068 | channel->attr.switch_timer_interval = switch_timer_interval; |
2069 | } else if (!strcmp((const char *) attr_node->name, config_element_read_timer_interval)) { | |
dcf266c0 JG |
2070 | xmlChar *content; |
2071 | uint64_t read_timer_interval = 0; | |
2072 | ||
2073 | /* read_timer_interval */ | |
2074 | content = xmlNodeGetContent(attr_node); | |
2075 | if (!content) { | |
2076 | ret = -LTTNG_ERR_NOMEM; | |
2077 | goto end; | |
2078 | } | |
2079 | ||
2080 | ret = parse_uint(content, &read_timer_interval); | |
2081 | free(content); | |
2082 | if (ret) { | |
2083 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2084 | goto end; | |
2085 | } | |
2086 | ||
2087 | if (read_timer_interval > UINT_MAX) { | |
2088 | WARN("read_timer_interval out of range."); | |
2089 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2090 | goto end; | |
2091 | } | |
2092 | ||
28ab034a JG |
2093 | channel->attr.read_timer_interval = read_timer_interval; |
2094 | } else if (!strcmp((const char *) attr_node->name, config_element_output_type)) { | |
dcf266c0 JG |
2095 | xmlChar *content; |
2096 | ||
2097 | /* output_type */ | |
2098 | content = xmlNodeGetContent(attr_node); | |
2099 | if (!content) { | |
2100 | ret = -LTTNG_ERR_NOMEM; | |
2101 | goto end; | |
2102 | } | |
2103 | ||
2104 | ret = get_output_type(content); | |
2105 | free(content); | |
2106 | if (ret < 0) { | |
2107 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2108 | goto end; | |
2109 | } | |
2110 | ||
3afa94ae | 2111 | channel->attr.output = (lttng_event_output) ret; |
28ab034a | 2112 | } else if (!strcmp((const char *) attr_node->name, config_element_tracefile_size)) { |
dcf266c0 JG |
2113 | xmlChar *content; |
2114 | ||
2115 | /* tracefile_size */ | |
2116 | content = xmlNodeGetContent(attr_node); | |
2117 | if (!content) { | |
2118 | ret = -LTTNG_ERR_NOMEM; | |
2119 | goto end; | |
2120 | } | |
2121 | ||
2122 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2123 | free(content); | |
2124 | if (ret) { | |
2125 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2126 | goto end; | |
2127 | } | |
28ab034a | 2128 | } else if (!strcmp((const char *) attr_node->name, config_element_tracefile_count)) { |
dcf266c0 JG |
2129 | xmlChar *content; |
2130 | ||
2131 | /* tracefile_count */ | |
2132 | content = xmlNodeGetContent(attr_node); | |
2133 | if (!content) { | |
2134 | ret = -LTTNG_ERR_NOMEM; | |
2135 | goto end; | |
2136 | } | |
2137 | ||
2138 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2139 | free(content); | |
2140 | if (ret) { | |
2141 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2142 | goto end; | |
2143 | } | |
28ab034a | 2144 | } else if (!strcmp((const char *) attr_node->name, config_element_live_timer_interval)) { |
dcf266c0 JG |
2145 | xmlChar *content; |
2146 | uint64_t live_timer_interval = 0; | |
2147 | ||
2148 | /* live_timer_interval */ | |
2149 | content = xmlNodeGetContent(attr_node); | |
2150 | if (!content) { | |
2151 | ret = -LTTNG_ERR_NOMEM; | |
2152 | goto end; | |
2153 | } | |
2154 | ||
2155 | ret = parse_uint(content, &live_timer_interval); | |
2156 | free(content); | |
2157 | if (ret) { | |
2158 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2159 | goto end; | |
2160 | } | |
2161 | ||
2162 | if (live_timer_interval > UINT_MAX) { | |
2163 | WARN("live_timer_interval out of range."); | |
2164 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2165 | goto end; | |
2166 | } | |
2167 | ||
28ab034a JG |
2168 | channel->attr.live_timer_interval = live_timer_interval; |
2169 | } else if (!strcmp((const char *) attr_node->name, config_element_monitor_timer_interval)) { | |
4fc2b126 JR |
2170 | xmlChar *content; |
2171 | uint64_t monitor_timer_interval = 0; | |
2172 | ||
2173 | /* monitor_timer_interval */ | |
2174 | content = xmlNodeGetContent(attr_node); | |
2175 | if (!content) { | |
2176 | ret = -LTTNG_ERR_NOMEM; | |
2177 | goto end; | |
2178 | } | |
2179 | ||
2180 | ret = parse_uint(content, &monitor_timer_interval); | |
2181 | free(content); | |
2182 | if (ret) { | |
2183 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2184 | goto end; | |
2185 | } | |
2186 | ||
28ab034a | 2187 | ret = lttng_channel_set_monitor_timer_interval(channel, monitor_timer_interval); |
4fc2b126 JR |
2188 | if (ret) { |
2189 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2190 | goto end; | |
2191 | } | |
28ab034a | 2192 | } else if (!strcmp((const char *) attr_node->name, config_element_blocking_timeout)) { |
275472aa JR |
2193 | xmlChar *content; |
2194 | int64_t blocking_timeout = 0; | |
2195 | ||
2196 | /* blocking_timeout */ | |
2197 | content = xmlNodeGetContent(attr_node); | |
2198 | if (!content) { | |
2199 | ret = -LTTNG_ERR_NOMEM; | |
2200 | goto end; | |
2201 | } | |
2202 | ||
2203 | ret = parse_int(content, &blocking_timeout); | |
2204 | free(content); | |
2205 | if (ret) { | |
2206 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2207 | goto end; | |
2208 | } | |
2209 | ||
28ab034a | 2210 | ret = lttng_channel_set_blocking_timeout(channel, blocking_timeout); |
275472aa JR |
2211 | if (ret) { |
2212 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2213 | goto end; | |
2214 | } | |
28ab034a | 2215 | } else if (!strcmp((const char *) attr_node->name, config_element_events)) { |
dcf266c0 JG |
2216 | /* events */ |
2217 | *events_node = attr_node; | |
2218 | } else { | |
2219 | /* contexts */ | |
2220 | *contexts_node = attr_node; | |
2221 | } | |
2222 | ret = 0; | |
2223 | end: | |
2224 | return ret; | |
2225 | } | |
2226 | ||
28ab034a JG |
2227 | static int |
2228 | process_context_node(xmlNodePtr context_node, struct lttng_handle *handle, const char *channel_name) | |
dcf266c0 JG |
2229 | { |
2230 | int ret; | |
2231 | struct lttng_event_context context; | |
2232 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2233 | ||
a0377dfe FD |
2234 | LTTNG_ASSERT(handle); |
2235 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2236 | |
2237 | if (!context_child_node) { | |
2238 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2239 | goto end; | |
2240 | } | |
2241 | ||
2242 | memset(&context, 0, sizeof(context)); | |
2243 | ||
28ab034a | 2244 | if (!strcmp((const char *) context_child_node->name, config_element_type)) { |
dcf266c0 JG |
2245 | /* type */ |
2246 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2247 | |
dcf266c0 JG |
2248 | if (!content) { |
2249 | ret = -LTTNG_ERR_NOMEM; | |
2250 | goto end; | |
2251 | } | |
2252 | ||
2253 | ret = get_context_type(content); | |
2254 | free(content); | |
2255 | if (ret < 0) { | |
2256 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2257 | goto end; | |
2258 | } | |
2259 | ||
3afa94ae | 2260 | context.ctx = (lttng_event_context_type) ret; |
28ab034a | 2261 | } else if (!strcmp((const char *) context_child_node->name, config_element_context_perf)) { |
045fc617 | 2262 | /* perf */ |
dcf266c0 JG |
2263 | xmlNodePtr perf_attr_node; |
2264 | ||
14ce5bd8 JG |
2265 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2266 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2267 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
28ab034a JG |
2268 | for (perf_attr_node = xmlFirstElementChild(context_child_node); perf_attr_node; |
2269 | perf_attr_node = xmlNextElementSibling(perf_attr_node)) { | |
2270 | if (!strcmp((const char *) perf_attr_node->name, config_element_type)) { | |
dcf266c0 JG |
2271 | xmlChar *content; |
2272 | uint64_t type = 0; | |
2273 | ||
2274 | /* type */ | |
2275 | content = xmlNodeGetContent(perf_attr_node); | |
2276 | if (!content) { | |
2277 | ret = -LTTNG_ERR_NOMEM; | |
2278 | goto end; | |
2279 | } | |
2280 | ||
2281 | ret = parse_uint(content, &type); | |
2282 | free(content); | |
2283 | if (ret) { | |
2284 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2285 | goto end; | |
2286 | } | |
2287 | ||
2288 | if (type > UINT32_MAX) { | |
2289 | WARN("perf context type out of range."); | |
2290 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2291 | goto end; | |
2292 | } | |
2293 | ||
2294 | context.u.perf_counter.type = type; | |
2295 | } else if (!strcmp((const char *) perf_attr_node->name, | |
28ab034a | 2296 | config_element_config)) { |
dcf266c0 JG |
2297 | xmlChar *content; |
2298 | uint64_t config = 0; | |
2299 | ||
2300 | /* config */ | |
2301 | content = xmlNodeGetContent(perf_attr_node); | |
2302 | if (!content) { | |
2303 | ret = -LTTNG_ERR_NOMEM; | |
2304 | goto end; | |
2305 | } | |
2306 | ||
2307 | ret = parse_uint(content, &config); | |
2308 | free(content); | |
2309 | if (ret) { | |
2310 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2311 | goto end; | |
2312 | } | |
2313 | ||
2314 | context.u.perf_counter.config = config; | |
2315 | } else if (!strcmp((const char *) perf_attr_node->name, | |
28ab034a | 2316 | config_element_name)) { |
dcf266c0 | 2317 | xmlChar *content; |
dcf266c0 JG |
2318 | |
2319 | /* name */ | |
2320 | content = xmlNodeGetContent(perf_attr_node); | |
2321 | if (!content) { | |
2322 | ret = -LTTNG_ERR_NOMEM; | |
2323 | goto end; | |
2324 | } | |
2325 | ||
d2e67842 | 2326 | ret = lttng_strncpy(context.u.perf_counter.name, |
28ab034a JG |
2327 | (const char *) content, |
2328 | LTTNG_SYMBOL_NAME_LEN); | |
d2e67842 JG |
2329 | if (ret == -1) { |
2330 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
28ab034a JG |
2331 | (const char *) content, |
2332 | strlen((const char *) content), | |
2333 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2334 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2335 | free(content); | |
2336 | goto end; | |
2337 | } | |
dcf266c0 JG |
2338 | free(content); |
2339 | } | |
2340 | } | |
28ab034a | 2341 | } else if (!strcmp((const char *) context_child_node->name, config_element_context_app)) { |
045fc617 JG |
2342 | /* application context */ |
2343 | xmlNodePtr app_ctx_node; | |
2344 | ||
2345 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
28ab034a JG |
2346 | for (app_ctx_node = xmlFirstElementChild(context_child_node); app_ctx_node; |
2347 | app_ctx_node = xmlNextElementSibling(app_ctx_node)) { | |
045fc617 | 2348 | xmlChar *content; |
28ab034a JG |
2349 | char **target = strcmp((const char *) app_ctx_node->name, |
2350 | config_element_context_app_provider_name) == 0 ? | |
2351 | &context.u.app_ctx.provider_name : | |
2352 | &context.u.app_ctx.ctx_name; | |
045fc617 JG |
2353 | |
2354 | content = xmlNodeGetContent(app_ctx_node); | |
2355 | if (!content) { | |
2356 | ret = -LTTNG_ERR_NOMEM; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | *target = (char *) content; | |
2361 | } | |
2362 | } else { | |
2363 | /* Unrecognized context type */ | |
2364 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2365 | goto end; | |
dcf266c0 JG |
2366 | } |
2367 | ||
cd9adb8b | 2368 | ret = lttng_add_context(handle, &context, nullptr, channel_name); |
045fc617 JG |
2369 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2370 | free(context.u.app_ctx.provider_name); | |
2371 | free(context.u.app_ctx.ctx_name); | |
2372 | } | |
dcf266c0 JG |
2373 | end: |
2374 | return ret; | |
2375 | } | |
2376 | ||
28ab034a JG |
2377 | static int process_contexts_node(xmlNodePtr contexts_node, |
2378 | struct lttng_handle *handle, | |
2379 | const char *channel_name) | |
dcf266c0 JG |
2380 | { |
2381 | int ret = 0; | |
2382 | xmlNodePtr context_node; | |
2383 | ||
2384 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
28ab034a | 2385 | context_node = xmlNextElementSibling(context_node)) { |
dcf266c0 JG |
2386 | ret = process_context_node(context_node, handle, channel_name); |
2387 | if (ret) { | |
2388 | goto end; | |
2389 | } | |
2390 | } | |
2391 | end: | |
2392 | return ret; | |
2393 | } | |
2394 | ||
159b042f | 2395 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
28ab034a JG |
2396 | const char **element_id_tracker, |
2397 | const char **element_value_type, | |
2398 | const char **element_value, | |
2399 | const char **element_value_alias, | |
2400 | const char **element_name) | |
55c9e7ca JR |
2401 | { |
2402 | int ret = 0; | |
2403 | ||
159b042f JG |
2404 | switch (process_attr) { |
2405 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2406 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2407 | *element_value_type = config_element_process_attr_pid_value; | |
2408 | *element_value = config_element_process_attr_id; | |
2409 | *element_value_alias = config_element_process_attr_id; | |
cd9adb8b | 2410 | *element_name = nullptr; |
55c9e7ca | 2411 | break; |
159b042f JG |
2412 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2413 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2414 | *element_value_type = config_element_process_attr_vpid_value; | |
2415 | *element_value = config_element_process_attr_id; | |
cd9adb8b JG |
2416 | *element_value_alias = nullptr; |
2417 | *element_name = nullptr; | |
55c9e7ca | 2418 | break; |
159b042f JG |
2419 | case LTTNG_PROCESS_ATTR_USER_ID: |
2420 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2421 | *element_value_type = config_element_process_attr_uid_value; | |
2422 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2423 | *element_value_alias = nullptr; |
55c9e7ca JR |
2424 | *element_name = config_element_name; |
2425 | break; | |
159b042f JG |
2426 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2427 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2428 | *element_value_type = config_element_process_attr_vuid_value; | |
2429 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2430 | *element_value_alias = nullptr; |
55c9e7ca JR |
2431 | *element_name = config_element_name; |
2432 | break; | |
159b042f JG |
2433 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2434 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2435 | *element_value_type = config_element_process_attr_gid_value; | |
2436 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2437 | *element_value_alias = nullptr; |
55c9e7ca JR |
2438 | *element_name = config_element_name; |
2439 | break; | |
159b042f JG |
2440 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2441 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2442 | *element_value_type = config_element_process_attr_vgid_value; | |
2443 | *element_value = config_element_process_attr_id; | |
cd9adb8b | 2444 | *element_value_alias = nullptr; |
55c9e7ca JR |
2445 | *element_name = config_element_name; |
2446 | break; | |
2447 | default: | |
2448 | ret = LTTNG_ERR_INVALID; | |
2449 | } | |
2450 | return ret; | |
2451 | } | |
2452 | ||
28ab034a | 2453 | static int process_legacy_pid_tracker_node(xmlNodePtr trackers_node, struct lttng_handle *handle) |
f7af9a72 JG |
2454 | { |
2455 | int ret = 0, child_count; | |
cd9adb8b | 2456 | xmlNodePtr targets_node = nullptr; |
f7af9a72 JG |
2457 | xmlNodePtr node; |
2458 | const char *element_id_tracker; | |
2459 | const char *element_target_id; | |
2460 | const char *element_id; | |
2461 | const char *element_id_alias; | |
2462 | const char *element_name; | |
2463 | enum lttng_error_code tracker_handle_ret_code; | |
cd9adb8b | 2464 | struct lttng_process_attr_tracker_handle *tracker_handle = nullptr; |
f7af9a72 | 2465 | enum lttng_process_attr_tracker_handle_status status; |
28ab034a JG |
2466 | const enum lttng_process_attr process_attr = handle->domain.type == LTTNG_DOMAIN_UST ? |
2467 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2468 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
f7af9a72 | 2469 | |
a0377dfe | 2470 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2471 | |
2472 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
28ab034a | 2473 | handle->session_name, handle->domain.type, process_attr, &tracker_handle); |
f7af9a72 JG |
2474 | if (tracker_handle_ret_code != LTTNG_OK) { |
2475 | ret = LTTNG_ERR_INVALID; | |
2476 | goto end; | |
2477 | } | |
2478 | ||
28ab034a JG |
2479 | ret = get_tracker_elements(process_attr, |
2480 | &element_id_tracker, | |
2481 | &element_target_id, | |
2482 | &element_id, | |
2483 | &element_id_alias, | |
2484 | &element_name); | |
f7af9a72 JG |
2485 | if (ret) { |
2486 | goto end; | |
2487 | } | |
2488 | ||
2489 | /* Get the targets node */ | |
28ab034a JG |
2490 | for (node = xmlFirstElementChild(trackers_node); node; node = xmlNextElementSibling(node)) { |
2491 | if (!strcmp((const char *) node->name, config_element_tracker_targets_legacy)) { | |
f7af9a72 JG |
2492 | targets_node = node; |
2493 | break; | |
2494 | } | |
3afa94ae | 2495 | } |
f7af9a72 JG |
2496 | |
2497 | if (!targets_node) { | |
2498 | ret = LTTNG_ERR_INVALID; | |
2499 | goto end; | |
2500 | } | |
2501 | ||
2502 | /* Go through all id target node */ | |
2503 | child_count = xmlChildElementCount(targets_node); | |
2504 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
28ab034a JG |
2505 | tracker_handle, |
2506 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2507 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
f7af9a72 JG |
2508 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { |
2509 | ret = LTTNG_ERR_UNK; | |
2510 | goto end; | |
2511 | } | |
2512 | ||
2513 | /* Add all tracked values. */ | |
28ab034a | 2514 | for (node = xmlFirstElementChild(targets_node); node; node = xmlNextElementSibling(node)) { |
f7af9a72 JG |
2515 | xmlNodePtr pid_target_node = node; |
2516 | ||
2517 | /* get pid_target node and track it */ | |
2518 | for (node = xmlFirstElementChild(pid_target_node); node; | |
28ab034a JG |
2519 | node = xmlNextElementSibling(node)) { |
2520 | if (!strcmp((const char *) node->name, config_element_tracker_pid_legacy)) { | |
f7af9a72 JG |
2521 | int64_t id; |
2522 | xmlChar *content = xmlNodeGetContent(node); | |
2523 | ||
2524 | if (!content) { | |
2525 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2526 | goto end; | |
2527 | } | |
2528 | ||
2529 | ret = parse_int(content, &id); | |
2530 | free(content); | |
2531 | if (ret) { | |
2532 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2533 | goto end; | |
2534 | } | |
2535 | ||
2536 | switch (process_attr) { | |
2537 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
28ab034a JG |
2538 | status = |
2539 | lttng_process_attr_process_id_tracker_handle_add_pid( | |
2540 | tracker_handle, (pid_t) id); | |
f7af9a72 JG |
2541 | break; |
2542 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
28ab034a JG |
2543 | status = |
2544 | lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2545 | tracker_handle, (pid_t) id); | |
f7af9a72 JG |
2546 | break; |
2547 | default: | |
2548 | ret = LTTNG_ERR_INVALID; | |
2549 | goto end; | |
2550 | } | |
2551 | } | |
2552 | switch (status) { | |
2553 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2554 | continue; | |
2555 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2556 | ret = LTTNG_ERR_INVALID; | |
2557 | break; | |
2558 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2559 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2560 | break; | |
2561 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2562 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2563 | break; | |
2564 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2565 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2566 | default: | |
2567 | ret = LTTNG_ERR_UNK; | |
2568 | goto end; | |
2569 | } | |
2570 | } | |
2571 | node = pid_target_node; | |
2572 | } | |
2573 | ||
2574 | end: | |
2575 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2576 | return ret; | |
28ab034a | 2577 | } |
f7af9a72 | 2578 | |
55c9e7ca | 2579 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
28ab034a JG |
2580 | struct lttng_handle *handle, |
2581 | enum lttng_process_attr process_attr) | |
847a5916 | 2582 | { |
159b042f | 2583 | int ret = 0, child_count; |
cd9adb8b | 2584 | xmlNodePtr values_node = nullptr; |
847a5916 | 2585 | xmlNodePtr node; |
55c9e7ca JR |
2586 | const char *element_id_tracker; |
2587 | const char *element_target_id; | |
2588 | const char *element_id; | |
2589 | const char *element_id_alias; | |
2590 | const char *element_name; | |
159b042f | 2591 | enum lttng_error_code tracker_handle_ret_code; |
cd9adb8b | 2592 | struct lttng_process_attr_tracker_handle *tracker_handle = nullptr; |
159b042f | 2593 | enum lttng_process_attr_tracker_handle_status status; |
847a5916 | 2594 | |
a0377dfe FD |
2595 | LTTNG_ASSERT(handle); |
2596 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2597 | |
159b042f | 2598 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
28ab034a | 2599 | handle->session_name, handle->domain.type, process_attr, &tracker_handle); |
159b042f JG |
2600 | if (tracker_handle_ret_code != LTTNG_OK) { |
2601 | ret = LTTNG_ERR_INVALID; | |
2602 | goto end; | |
2603 | } | |
2604 | ||
28ab034a JG |
2605 | ret = get_tracker_elements(process_attr, |
2606 | &element_id_tracker, | |
2607 | &element_target_id, | |
2608 | &element_id, | |
2609 | &element_id_alias, | |
2610 | &element_name); | |
55c9e7ca | 2611 | if (ret) { |
159b042f | 2612 | goto end; |
55c9e7ca JR |
2613 | } |
2614 | ||
f7af9a72 | 2615 | /* get the values node */ |
55c9e7ca | 2616 | for (node = xmlFirstElementChild(id_tracker_node); node; |
28ab034a JG |
2617 | node = xmlNextElementSibling(node)) { |
2618 | if (!strcmp((const char *) node->name, config_element_process_attr_values)) { | |
f7af9a72 | 2619 | values_node = node; |
847a5916 JR |
2620 | break; |
2621 | } | |
2622 | } | |
2623 | ||
f7af9a72 | 2624 | if (!values_node) { |
847a5916 JR |
2625 | ret = LTTNG_ERR_INVALID; |
2626 | goto end; | |
2627 | } | |
2628 | ||
55c9e7ca | 2629 | /* Go through all id target node */ |
f7af9a72 | 2630 | child_count = xmlChildElementCount(values_node); |
159b042f | 2631 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
28ab034a JG |
2632 | tracker_handle, |
2633 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2634 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
159b042f JG |
2635 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { |
2636 | ret = LTTNG_ERR_UNK; | |
2637 | goto end; | |
847a5916 | 2638 | } |
159b042f JG |
2639 | |
2640 | /* Add all tracked values. */ | |
28ab034a | 2641 | for (node = xmlFirstElementChild(values_node); node; node = xmlNextElementSibling(node)) { |
55c9e7ca | 2642 | xmlNodePtr id_target_node = node; |
847a5916 | 2643 | |
55c9e7ca JR |
2644 | /* get id node and track it */ |
2645 | for (node = xmlFirstElementChild(id_target_node); node; | |
28ab034a | 2646 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2647 | if (!strcmp((const char *) node->name, element_id) || |
28ab034a JG |
2648 | (element_id_alias && |
2649 | !strcmp((const char *) node->name, element_id_alias))) { | |
55c9e7ca | 2650 | int64_t id; |
159b042f | 2651 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2652 | |
847a5916 JR |
2653 | if (!content) { |
2654 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2655 | goto end; | |
2656 | } | |
2657 | ||
55c9e7ca | 2658 | ret = parse_int(content, &id); |
847a5916 JR |
2659 | free(content); |
2660 | if (ret) { | |
2661 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2662 | goto end; | |
2663 | } | |
2664 | ||
159b042f JG |
2665 | switch (process_attr) { |
2666 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
28ab034a JG |
2667 | status = |
2668 | lttng_process_attr_process_id_tracker_handle_add_pid( | |
2669 | tracker_handle, (pid_t) id); | |
159b042f JG |
2670 | break; |
2671 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
28ab034a JG |
2672 | status = |
2673 | lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2674 | tracker_handle, (pid_t) id); | |
159b042f JG |
2675 | break; |
2676 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2677 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
28ab034a | 2678 | tracker_handle, (uid_t) id); |
159b042f JG |
2679 | break; |
2680 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
28ab034a JG |
2681 | status = |
2682 | lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2683 | tracker_handle, (uid_t) id); | |
159b042f JG |
2684 | break; |
2685 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2686 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
28ab034a | 2687 | tracker_handle, (gid_t) id); |
159b042f JG |
2688 | break; |
2689 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
28ab034a JG |
2690 | status = |
2691 | lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2692 | tracker_handle, (gid_t) id); | |
159b042f JG |
2693 | break; |
2694 | default: | |
2695 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2696 | goto end; |
2697 | } | |
159b042f | 2698 | } else if (element_name && |
28ab034a | 2699 | !strcmp((const char *) node->name, element_name)) { |
159b042f | 2700 | xmlChar *content = xmlNodeGetContent(node); |
55c9e7ca | 2701 | |
55c9e7ca JR |
2702 | if (!content) { |
2703 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2704 | goto end; | |
2705 | } | |
2d97a006 | 2706 | |
159b042f JG |
2707 | switch (process_attr) { |
2708 | case LTTNG_PROCESS_ATTR_USER_ID: | |
28ab034a JG |
2709 | status = |
2710 | lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2711 | tracker_handle, (const char *) content); | |
159b042f JG |
2712 | break; |
2713 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
28ab034a JG |
2714 | status = |
2715 | lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2716 | tracker_handle, (const char *) content); | |
159b042f JG |
2717 | break; |
2718 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
28ab034a JG |
2719 | status = |
2720 | lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2721 | tracker_handle, (const char *) content); | |
159b042f JG |
2722 | break; |
2723 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
28ab034a JG |
2724 | status = |
2725 | lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2726 | tracker_handle, (const char *) content); | |
159b042f JG |
2727 | break; |
2728 | default: | |
2729 | free(content); | |
2730 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2731 | goto end; |
2732 | } | |
55c9e7ca | 2733 | free(content); |
159b042f JG |
2734 | } |
2735 | switch (status) { | |
2736 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2737 | continue; | |
2738 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2739 | ret = LTTNG_ERR_INVALID; | |
2740 | break; | |
2741 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2742 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2743 | break; | |
2744 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2745 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2746 | break; | |
2747 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2748 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2749 | default: | |
2750 | ret = LTTNG_ERR_UNK; | |
2751 | goto end; | |
847a5916 JR |
2752 | } |
2753 | } | |
55c9e7ca | 2754 | node = id_target_node; |
847a5916 JR |
2755 | } |
2756 | ||
2757 | end: | |
159b042f | 2758 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2759 | return ret; |
2760 | } | |
2761 | ||
28ab034a | 2762 | static int process_domain_node(xmlNodePtr domain_node, const char *session_name) |
dcf266c0 JG |
2763 | { |
2764 | int ret; | |
3afa94ae | 2765 | struct lttng_domain domain {}; |
cd9adb8b JG |
2766 | struct lttng_handle *handle = nullptr; |
2767 | struct lttng_channel *channel = nullptr; | |
2768 | xmlNodePtr channels_node = nullptr; | |
2769 | xmlNodePtr trackers_node = nullptr; | |
2770 | xmlNodePtr pid_tracker_node = nullptr; | |
2771 | xmlNodePtr vpid_tracker_node = nullptr; | |
2772 | xmlNodePtr uid_tracker_node = nullptr; | |
2773 | xmlNodePtr vuid_tracker_node = nullptr; | |
2774 | xmlNodePtr gid_tracker_node = nullptr; | |
2775 | xmlNodePtr vgid_tracker_node = nullptr; | |
dcf266c0 JG |
2776 | xmlNodePtr node; |
2777 | ||
a0377dfe | 2778 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2779 | |
2780 | ret = init_domain(domain_node, &domain); | |
2781 | if (ret) { | |
2782 | goto end; | |
2783 | } | |
2784 | ||
2785 | handle = lttng_create_handle(session_name, &domain); | |
2786 | if (!handle) { | |
2787 | ret = -LTTNG_ERR_NOMEM; | |
2788 | goto end; | |
2789 | } | |
2790 | ||
2791 | /* get the channels node */ | |
28ab034a JG |
2792 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
2793 | if (!strcmp((const char *) node->name, config_element_channels)) { | |
dcf266c0 JG |
2794 | channels_node = node; |
2795 | break; | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | if (!channels_node) { | |
2800 | goto end; | |
2801 | } | |
2802 | ||
2803 | /* create all channels */ | |
28ab034a | 2804 | for (node = xmlFirstElementChild(channels_node); node; node = xmlNextElementSibling(node)) { |
36d1687c | 2805 | const enum lttng_domain_type original_domain = domain.type; |
cd9adb8b JG |
2806 | xmlNodePtr contexts_node = nullptr; |
2807 | xmlNodePtr events_node = nullptr; | |
dcf266c0 JG |
2808 | xmlNodePtr channel_attr_node; |
2809 | ||
36d1687c JG |
2810 | /* |
2811 | * Channels of the "agent" types cannot be created directly. | |
2812 | * They are meant to be created implicitly through the | |
2813 | * activation of events in their domain. However, a user | |
2814 | * can override the default channel configuration attributes | |
2815 | * by creating the underlying UST channel _before_ enabling | |
2816 | * an agent domain event. | |
2817 | * | |
2818 | * Hence, the channel's type is substituted before the creation | |
2819 | * and restored by the time the events are created. | |
2820 | */ | |
2821 | switch (domain.type) { | |
2822 | case LTTNG_DOMAIN_JUL: | |
2823 | case LTTNG_DOMAIN_LOG4J: | |
2824 | case LTTNG_DOMAIN_PYTHON: | |
2825 | domain.type = LTTNG_DOMAIN_UST; | |
2826 | default: | |
2827 | break; | |
2828 | } | |
2829 | ||
4fc2b126 JR |
2830 | channel = lttng_channel_create(&domain); |
2831 | if (!channel) { | |
2832 | ret = -1; | |
2833 | goto end; | |
2834 | } | |
dcf266c0 | 2835 | |
28ab034a JG |
2836 | for (channel_attr_node = xmlFirstElementChild(node); channel_attr_node; |
2837 | channel_attr_node = xmlNextElementSibling(channel_attr_node)) { | |
2838 | ret = process_channel_attr_node( | |
2839 | channel_attr_node, channel, &contexts_node, &events_node); | |
dcf266c0 JG |
2840 | if (ret) { |
2841 | goto end; | |
2842 | } | |
2843 | } | |
2844 | ||
4fc2b126 | 2845 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2846 | if (ret < 0) { |
2847 | goto end; | |
2848 | } | |
2849 | ||
36d1687c JG |
2850 | /* Restore the original channel domain. */ |
2851 | domain.type = original_domain; | |
2852 | ||
4fc2b126 | 2853 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2854 | if (ret) { |
2855 | goto end; | |
2856 | } | |
2857 | ||
28ab034a | 2858 | ret = process_contexts_node(contexts_node, handle, channel->name); |
dcf266c0 JG |
2859 | if (ret) { |
2860 | goto end; | |
2861 | } | |
4fc2b126 JR |
2862 | |
2863 | lttng_channel_destroy(channel); | |
dcf266c0 | 2864 | } |
cd9adb8b | 2865 | channel = nullptr; |
847a5916 JR |
2866 | |
2867 | /* get the trackers node */ | |
28ab034a JG |
2868 | for (node = xmlFirstElementChild(domain_node); node; node = xmlNextElementSibling(node)) { |
2869 | if (!strcmp((const char *) node->name, config_element_process_attr_trackers) || | |
2870 | !strcmp((const char *) node->name, config_element_trackers_legacy)) { | |
f7af9a72 JG |
2871 | if (trackers_node) { |
2872 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
28ab034a JG |
2873 | config_element_process_attr_trackers, |
2874 | config_element_trackers_legacy); | |
f7af9a72 JG |
2875 | ret = -1; |
2876 | goto end; | |
2877 | } | |
847a5916 JR |
2878 | trackers_node = node; |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | if (!trackers_node) { | |
2884 | goto end; | |
2885 | } | |
2886 | ||
28ab034a JG |
2887 | for (node = xmlFirstElementChild(trackers_node); node; node = xmlNextElementSibling(node)) { |
2888 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_pid)) { | |
847a5916 | 2889 | pid_tracker_node = node; |
28ab034a JG |
2890 | ret = process_id_tracker_node( |
2891 | pid_tracker_node, handle, LTTNG_PROCESS_ATTR_PROCESS_ID); | |
55c9e7ca JR |
2892 | if (ret) { |
2893 | goto end; | |
2894 | } | |
2895 | } | |
28ab034a | 2896 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vpid)) { |
55c9e7ca | 2897 | vpid_tracker_node = node; |
28ab034a JG |
2898 | ret = process_id_tracker_node( |
2899 | vpid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
55c9e7ca JR |
2900 | if (ret) { |
2901 | goto end; | |
2902 | } | |
2903 | } | |
28ab034a | 2904 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_uid)) { |
55c9e7ca | 2905 | uid_tracker_node = node; |
28ab034a JG |
2906 | ret = process_id_tracker_node( |
2907 | uid_tracker_node, handle, LTTNG_PROCESS_ATTR_USER_ID); | |
55c9e7ca JR |
2908 | if (ret) { |
2909 | goto end; | |
2910 | } | |
2911 | } | |
28ab034a | 2912 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vuid)) { |
55c9e7ca | 2913 | vuid_tracker_node = node; |
28ab034a JG |
2914 | ret = process_id_tracker_node( |
2915 | vuid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
55c9e7ca JR |
2916 | if (ret) { |
2917 | goto end; | |
2918 | } | |
2919 | } | |
28ab034a | 2920 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_gid)) { |
55c9e7ca | 2921 | gid_tracker_node = node; |
28ab034a JG |
2922 | ret = process_id_tracker_node( |
2923 | gid_tracker_node, handle, LTTNG_PROCESS_ATTR_GROUP_ID); | |
55c9e7ca JR |
2924 | if (ret) { |
2925 | goto end; | |
2926 | } | |
2927 | } | |
28ab034a | 2928 | if (!strcmp((const char *) node->name, config_element_process_attr_tracker_vgid)) { |
55c9e7ca | 2929 | vgid_tracker_node = node; |
28ab034a JG |
2930 | ret = process_id_tracker_node( |
2931 | vgid_tracker_node, handle, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
847a5916 JR |
2932 | if (ret) { |
2933 | goto end; | |
2934 | } | |
2935 | } | |
28ab034a | 2936 | if (!strcmp((const char *) node->name, config_element_pid_tracker_legacy)) { |
f7af9a72 JG |
2937 | ret = process_legacy_pid_tracker_node(node, handle); |
2938 | if (ret) { | |
2939 | goto end; | |
2940 | } | |
2941 | } | |
847a5916 JR |
2942 | } |
2943 | ||
dcf266c0 | 2944 | end: |
4fc2b126 | 2945 | lttng_channel_destroy(channel); |
dcf266c0 JG |
2946 | lttng_destroy_handle(handle); |
2947 | return ret; | |
2948 | } | |
2949 | ||
28ab034a | 2950 | static int add_periodic_rotation(const char *name, uint64_t time_us) |
66ea93b1 JG |
2951 | { |
2952 | int ret; | |
2953 | enum lttng_rotation_status status; | |
28ab034a | 2954 | struct lttng_rotation_schedule *periodic = lttng_rotation_schedule_periodic_create(); |
66ea93b1 JG |
2955 | |
2956 | if (!periodic) { | |
2957 | ret = -LTTNG_ERR_NOMEM; | |
2958 | goto error; | |
2959 | } | |
2960 | ||
28ab034a | 2961 | status = lttng_rotation_schedule_periodic_set_period(periodic, time_us); |
66ea93b1 JG |
2962 | if (status != LTTNG_ROTATION_STATUS_OK) { |
2963 | ret = -LTTNG_ERR_INVALID; | |
2964 | goto error; | |
2965 | } | |
2966 | ||
2967 | status = lttng_session_add_rotation_schedule(name, periodic); | |
2968 | switch (status) { | |
2969 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 2970 | ret = 0; |
66ea93b1 JG |
2971 | break; |
2972 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
2973 | case LTTNG_ROTATION_STATUS_INVALID: | |
2974 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2975 | break; | |
2976 | default: | |
2977 | ret = -LTTNG_ERR_UNK; | |
2978 | break; | |
2979 | } | |
2980 | error: | |
2981 | lttng_rotation_schedule_destroy(periodic); | |
2982 | return ret; | |
2983 | } | |
2984 | ||
28ab034a | 2985 | static int add_size_rotation(const char *name, uint64_t size_bytes) |
66ea93b1 JG |
2986 | { |
2987 | int ret; | |
2988 | enum lttng_rotation_status status; | |
28ab034a | 2989 | struct lttng_rotation_schedule *size = lttng_rotation_schedule_size_threshold_create(); |
66ea93b1 JG |
2990 | |
2991 | if (!size) { | |
2992 | ret = -LTTNG_ERR_NOMEM; | |
2993 | goto error; | |
2994 | } | |
2995 | ||
28ab034a | 2996 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, size_bytes); |
66ea93b1 JG |
2997 | if (status != LTTNG_ROTATION_STATUS_OK) { |
2998 | ret = -LTTNG_ERR_INVALID; | |
2999 | goto error; | |
3000 | } | |
3001 | ||
3002 | status = lttng_session_add_rotation_schedule(name, size); | |
3003 | switch (status) { | |
3004 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3005 | ret = 0; |
66ea93b1 JG |
3006 | break; |
3007 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3008 | case LTTNG_ROTATION_STATUS_INVALID: | |
3009 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3010 | break; | |
3011 | default: | |
3012 | ret = -LTTNG_ERR_UNK; | |
3013 | break; | |
3014 | } | |
3015 | error: | |
3016 | lttng_rotation_schedule_destroy(size); | |
3017 | return ret; | |
3018 | } | |
3019 | ||
28ab034a JG |
3020 | static int process_session_rotation_schedules_node(xmlNodePtr schedules_node, |
3021 | uint64_t *rotation_timer_interval, | |
3022 | uint64_t *rotation_size) | |
ce6176f2 JG |
3023 | { |
3024 | int ret = 0; | |
3025 | xmlNodePtr child; | |
3026 | ||
28ab034a JG |
3027 | for (child = xmlFirstElementChild(schedules_node); child; |
3028 | child = xmlNextElementSibling(child)) { | |
ce6176f2 | 3029 | if (!strcmp((const char *) child->name, |
28ab034a | 3030 | config_element_rotation_schedule_periodic)) { |
ce6176f2 JG |
3031 | xmlChar *content; |
3032 | xmlNodePtr time_us_node; | |
3033 | ||
3034 | /* periodic rotation schedule */ | |
3035 | time_us_node = xmlFirstElementChild(child); | |
3036 | if (!time_us_node || | |
28ab034a | 3037 | strcmp((const char *) time_us_node->name, |
5c7248cd | 3038 | config_element_rotation_schedule_periodic_time_us) != 0) { |
ce6176f2 JG |
3039 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
3040 | goto end; | |
3041 | } | |
3042 | ||
3043 | /* time_us child */ | |
3044 | content = xmlNodeGetContent(time_us_node); | |
3045 | if (!content) { | |
3046 | ret = -LTTNG_ERR_NOMEM; | |
3047 | goto end; | |
3048 | } | |
3049 | ret = parse_uint(content, rotation_timer_interval); | |
3050 | free(content); | |
3051 | if (ret) { | |
3052 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3053 | goto end; | |
3054 | } | |
3055 | } else if (!strcmp((const char *) child->name, | |
28ab034a | 3056 | config_element_rotation_schedule_size_threshold)) { |
ce6176f2 JG |
3057 | xmlChar *content; |
3058 | xmlNodePtr bytes_node; | |
3059 | ||
3060 | /* size_threshold rotation schedule */ | |
3061 | bytes_node = xmlFirstElementChild(child); | |
3062 | if (!bytes_node || | |
28ab034a | 3063 | strcmp((const char *) bytes_node->name, |
5c7248cd | 3064 | config_element_rotation_schedule_size_threshold_bytes) != 0) { |
ce6176f2 JG |
3065 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
3066 | goto end; | |
3067 | } | |
3068 | ||
3069 | /* bytes child */ | |
3070 | content = xmlNodeGetContent(bytes_node); | |
3071 | if (!content) { | |
3072 | ret = -LTTNG_ERR_NOMEM; | |
3073 | goto end; | |
3074 | } | |
3075 | ret = parse_uint(content, rotation_size); | |
3076 | free(content); | |
3077 | if (ret) { | |
3078 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3079 | goto end; | |
3080 | } | |
3081 | } | |
3082 | } | |
3083 | ||
3084 | end: | |
3085 | return ret; | |
3086 | } | |
3087 | ||
28ab034a JG |
3088 | static int process_session_node(xmlNodePtr session_node, |
3089 | const char *session_name, | |
3090 | int overwrite, | |
3091 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3092 | { |
3093 | int ret, started = -1, snapshot_mode = -1; | |
28ab034a | 3094 | uint64_t live_timer_interval = UINT64_MAX, rotation_timer_interval = 0, rotation_size = 0; |
cd9adb8b JG |
3095 | xmlChar *name = nullptr; |
3096 | xmlChar *shm_path = nullptr; | |
3097 | xmlNodePtr domains_node = nullptr; | |
3098 | xmlNodePtr output_node = nullptr; | |
dcf266c0 | 3099 | xmlNodePtr node; |
90936dcf | 3100 | xmlNodePtr attributes_child; |
cd9adb8b JG |
3101 | struct lttng_domain *kernel_domain = nullptr; |
3102 | struct lttng_domain *ust_domain = nullptr; | |
3103 | struct lttng_domain *jul_domain = nullptr; | |
3104 | struct lttng_domain *log4j_domain = nullptr; | |
3105 | struct lttng_domain *python_domain = nullptr; | |
dcf266c0 | 3106 | |
28ab034a JG |
3107 | for (node = xmlFirstElementChild(session_node); node; node = xmlNextElementSibling(node)) { |
3108 | if (!name && !strcmp((const char *) node->name, config_element_name)) { | |
dcf266c0 JG |
3109 | /* name */ |
3110 | xmlChar *node_content = xmlNodeGetContent(node); | |
3111 | if (!node_content) { | |
3112 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3113 | goto error; |
dcf266c0 JG |
3114 | } |
3115 | ||
d324faf7 | 3116 | name = node_content; |
28ab034a JG |
3117 | } else if (!domains_node && |
3118 | !strcmp((const char *) node->name, config_element_domains)) { | |
dcf266c0 JG |
3119 | /* domains */ |
3120 | domains_node = node; | |
28ab034a JG |
3121 | } else if (started == -1 && |
3122 | !strcmp((const char *) node->name, config_element_started)) { | |
dcf266c0 JG |
3123 | /* started */ |
3124 | xmlChar *node_content = xmlNodeGetContent(node); | |
3125 | if (!node_content) { | |
3126 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3127 | goto error; |
dcf266c0 JG |
3128 | } |
3129 | ||
3130 | ret = parse_bool(node_content, &started); | |
3131 | free(node_content); | |
3132 | if (ret) { | |
3133 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3134 | goto error; |
dcf266c0 | 3135 | } |
28ab034a JG |
3136 | } else if (!output_node && |
3137 | !strcmp((const char *) node->name, config_element_output)) { | |
dcf266c0 JG |
3138 | /* output */ |
3139 | output_node = node; | |
28ab034a JG |
3140 | } else if (!shm_path && |
3141 | !strcmp((const char *) node->name, config_element_shared_memory_path)) { | |
9e7c9f56 JR |
3142 | /* shared memory path */ |
3143 | xmlChar *node_content = xmlNodeGetContent(node); | |
3144 | if (!node_content) { | |
3145 | ret = -LTTNG_ERR_NOMEM; | |
3146 | goto error; | |
3147 | } | |
3148 | ||
3149 | shm_path = node_content; | |
dcf266c0 | 3150 | } else { |
259c2674 JD |
3151 | /* |
3152 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3153 | * rotation_timer_interval. |
3154 | */ | |
3155 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
28ab034a | 3156 | attributes_child = xmlNextElementSibling(attributes_child)) { |
90936dcf | 3157 | if (!strcmp((const char *) attributes_child->name, |
28ab034a | 3158 | config_element_snapshot_mode)) { |
90936dcf JD |
3159 | /* snapshot_mode */ |
3160 | xmlChar *snapshot_mode_content = | |
3161 | xmlNodeGetContent(attributes_child); | |
3162 | if (!snapshot_mode_content) { | |
3163 | ret = -LTTNG_ERR_NOMEM; | |
3164 | goto error; | |
3165 | } | |
dcf266c0 | 3166 | |
90936dcf JD |
3167 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3168 | free(snapshot_mode_content); | |
3169 | if (ret) { | |
3170 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3171 | goto error; | |
3172 | } | |
3173 | } else if (!strcmp((const char *) attributes_child->name, | |
28ab034a | 3174 | config_element_live_timer_interval)) { |
90936dcf JD |
3175 | /* live_timer_interval */ |
3176 | xmlChar *timer_interval_content = | |
3177 | xmlNodeGetContent(attributes_child); | |
3178 | if (!timer_interval_content) { | |
3179 | ret = -LTTNG_ERR_NOMEM; | |
3180 | goto error; | |
3181 | } | |
dcf266c0 | 3182 | |
28ab034a JG |
3183 | ret = parse_uint(timer_interval_content, |
3184 | &live_timer_interval); | |
90936dcf JD |
3185 | free(timer_interval_content); |
3186 | if (ret) { | |
3187 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3188 | goto error; | |
3189 | } | |
ce6176f2 | 3190 | } else if (!strcmp((const char *) attributes_child->name, |
28ab034a | 3191 | config_element_rotation_schedules)) { |
ce6176f2 | 3192 | ret = process_session_rotation_schedules_node( |
28ab034a JG |
3193 | attributes_child, |
3194 | &rotation_timer_interval, | |
3195 | &rotation_size); | |
90936dcf JD |
3196 | if (ret) { |
3197 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3198 | goto error; | |
3199 | } | |
259c2674 JD |
3200 | } |
3201 | } | |
dcf266c0 JG |
3202 | } |
3203 | } | |
3204 | ||
3205 | if (!name) { | |
3206 | /* Mandatory attribute, as defined in the session XSD */ | |
3207 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3208 | goto error; |
dcf266c0 JG |
3209 | } |
3210 | ||
5c7248cd | 3211 | if (session_name && strcmp((char *) name, session_name) != 0) { |
dcf266c0 | 3212 | /* This is not the session we are looking for */ |
c2da8cde DG |
3213 | ret = -LTTNG_ERR_NO_SESSION; |
3214 | goto error; | |
dcf266c0 JG |
3215 | } |
3216 | ||
3217 | /* Init domains to create the session handles */ | |
28ab034a | 3218 | for (node = xmlFirstElementChild(domains_node); node; node = xmlNextElementSibling(node)) { |
64803277 | 3219 | lttng_domain *domain = zmalloc<lttng_domain>(); |
dcf266c0 | 3220 | |
dcf266c0 JG |
3221 | if (!domain) { |
3222 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3223 | goto error; |
dcf266c0 JG |
3224 | } |
3225 | ||
3226 | ret = init_domain(node, domain); | |
3227 | if (ret) { | |
3228 | goto domain_init_error; | |
3229 | } | |
3230 | ||
3231 | switch (domain->type) { | |
3232 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3233 | if (kernel_domain) { |
3234 | /* Same domain seen twice, invalid! */ | |
3235 | goto domain_init_error; | |
3236 | } | |
dcf266c0 JG |
3237 | kernel_domain = domain; |
3238 | break; | |
3239 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3240 | if (ust_domain) { |
3241 | /* Same domain seen twice, invalid! */ | |
3242 | goto domain_init_error; | |
3243 | } | |
dcf266c0 JG |
3244 | ust_domain = domain; |
3245 | break; | |
3246 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3247 | if (jul_domain) { |
3248 | /* Same domain seen twice, invalid! */ | |
3249 | goto domain_init_error; | |
3250 | } | |
dcf266c0 JG |
3251 | jul_domain = domain; |
3252 | break; | |
5cdb6027 DG |
3253 | case LTTNG_DOMAIN_LOG4J: |
3254 | if (log4j_domain) { | |
3255 | /* Same domain seen twice, invalid! */ | |
3256 | goto domain_init_error; | |
3257 | } | |
3258 | log4j_domain = domain; | |
3259 | break; | |
0e115563 DG |
3260 | case LTTNG_DOMAIN_PYTHON: |
3261 | if (python_domain) { | |
3262 | /* Same domain seen twice, invalid! */ | |
3263 | goto domain_init_error; | |
3264 | } | |
3265 | python_domain = domain; | |
3266 | break; | |
dcf266c0 JG |
3267 | default: |
3268 | WARN("Invalid domain type"); | |
3269 | goto domain_init_error; | |
3270 | } | |
3271 | continue; | |
28ab034a | 3272 | domain_init_error: |
dcf266c0 JG |
3273 | free(domain); |
3274 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3275 | goto error; |
dcf266c0 JG |
3276 | } |
3277 | ||
2aaf5fc7 JR |
3278 | /* Apply overrides */ |
3279 | if (overrides) { | |
3280 | if (overrides->session_name) { | |
3281 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3282 | if (!name_override) { | |
3283 | ret = -LTTNG_ERR_NOMEM; | |
3284 | goto error; | |
3285 | } | |
3286 | ||
3287 | /* Overrides the session name to the provided name */ | |
3288 | xmlFree(name); | |
3289 | name = name_override; | |
3290 | } | |
3291 | } | |
3292 | ||
40b4155f | 3293 | if (overwrite) { |
dcf266c0 | 3294 | /* Destroy session if it exists */ |
d324faf7 | 3295 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3296 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3297 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3298 | goto error; |
dcf266c0 JG |
3299 | } |
3300 | } | |
3301 | ||
3302 | /* Create session type depending on output type */ | |
3303 | if (snapshot_mode && snapshot_mode != -1) { | |
28ab034a JG |
3304 | ret = create_snapshot_session((const char *) name, output_node, overrides); |
3305 | } else if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
3306 | ret = create_session( | |
3307 | (const char *) name, output_node, live_timer_interval, overrides); | |
dcf266c0 JG |
3308 | } else { |
3309 | /* regular session */ | |
28ab034a | 3310 | ret = create_session((const char *) name, output_node, UINT64_MAX, overrides); |
dcf266c0 | 3311 | } |
dcf266c0 | 3312 | if (ret) { |
c2da8cde | 3313 | goto error; |
dcf266c0 JG |
3314 | } |
3315 | ||
9e7c9f56 | 3316 | if (shm_path) { |
28ab034a | 3317 | ret = lttng_set_session_shm_path((const char *) name, (const char *) shm_path); |
9e7c9f56 JR |
3318 | if (ret) { |
3319 | goto error; | |
3320 | } | |
3321 | } | |
3322 | ||
28ab034a | 3323 | for (node = xmlFirstElementChild(domains_node); node; node = xmlNextElementSibling(node)) { |
d324faf7 | 3324 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3325 | if (ret) { |
3326 | goto end; | |
3327 | } | |
3328 | } | |
3329 | ||
66ea93b1 | 3330 | if (rotation_timer_interval) { |
28ab034a | 3331 | ret = add_periodic_rotation((const char *) name, rotation_timer_interval); |
66ea93b1 | 3332 | if (ret < 0) { |
259c2674 JD |
3333 | goto error; |
3334 | } | |
66ea93b1 JG |
3335 | } |
3336 | if (rotation_size) { | |
28ab034a | 3337 | ret = add_size_rotation((const char *) name, rotation_size); |
66ea93b1 | 3338 | if (ret < 0) { |
259c2674 JD |
3339 | goto error; |
3340 | } | |
3341 | } | |
3342 | ||
dcf266c0 | 3343 | if (started) { |
d324faf7 | 3344 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3345 | if (ret) { |
3346 | goto end; | |
3347 | } | |
3348 | } | |
c2da8cde | 3349 | |
dcf266c0 | 3350 | end: |
b2579dc1 | 3351 | if (ret < 0) { |
28ab034a | 3352 | ERR("Failed to load session %s: %s", (const char *) name, lttng_strerror(ret)); |
d324faf7 | 3353 | lttng_destroy_session((const char *) name); |
b2579dc1 JG |
3354 | } |
3355 | ||
c2da8cde | 3356 | error: |
dcf266c0 JG |
3357 | free(kernel_domain); |
3358 | free(ust_domain); | |
3359 | free(jul_domain); | |
5cdb6027 | 3360 | free(log4j_domain); |
135a3893 | 3361 | free(python_domain); |
d324faf7 | 3362 | xmlFree(name); |
9e7c9f56 | 3363 | xmlFree(shm_path); |
dcf266c0 JG |
3364 | return ret; |
3365 | } | |
3366 | ||
cf53c06d DG |
3367 | /* |
3368 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3369 | * Return -1 if the path is EPERM. | |
3370 | */ | |
3371 | static int validate_file_read_creds(const char *path) | |
3372 | { | |
3373 | int ret; | |
3374 | ||
a0377dfe | 3375 | LTTNG_ASSERT(path); |
cf53c06d DG |
3376 | |
3377 | /* Can we read the file. */ | |
3378 | ret = access(path, R_OK); | |
3379 | if (!ret) { | |
3380 | goto valid; | |
3381 | } | |
3382 | if (errno == EACCES) { | |
3383 | return -1; | |
3384 | } else { | |
3385 | /* Invalid. */ | |
3386 | return 0; | |
3387 | } | |
3388 | valid: | |
3389 | return 1; | |
3390 | } | |
3391 | ||
28ab034a JG |
3392 | static int load_session_from_file(const char *path, |
3393 | const char *session_name, | |
3394 | struct session_config_validation_ctx *validation_ctx, | |
3395 | int overwrite, | |
3396 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3397 | { |
3398 | int ret, session_found = !session_name; | |
cd9adb8b | 3399 | xmlDocPtr doc = nullptr; |
dcf266c0 JG |
3400 | xmlNodePtr sessions_node; |
3401 | xmlNodePtr session_node; | |
dcf266c0 | 3402 | |
a0377dfe FD |
3403 | LTTNG_ASSERT(path); |
3404 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3405 | |
cf53c06d DG |
3406 | ret = validate_file_read_creds(path); |
3407 | if (ret != 1) { | |
3408 | if (ret == -1) { | |
3409 | ret = -LTTNG_ERR_EPERM; | |
3410 | } else { | |
3411 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3412 | } | |
dcf266c0 JG |
3413 | goto end; |
3414 | } | |
3415 | ||
3416 | doc = xmlParseFile(path); | |
3417 | if (!doc) { | |
3418 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3419 | goto end; | |
3420 | } | |
3421 | ||
3422 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3423 | if (ret) { | |
3424 | ERR("Session configuration file validation failed"); | |
3425 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3426 | goto end; | |
3427 | } | |
3428 | ||
3429 | sessions_node = xmlDocGetRootElement(doc); | |
3430 | if (!sessions_node) { | |
55c9e7ca | 3431 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3432 | goto end; |
3433 | } | |
3434 | ||
28ab034a JG |
3435 | for (session_node = xmlFirstElementChild(sessions_node); session_node; |
3436 | session_node = xmlNextElementSibling(session_node)) { | |
3437 | ret = process_session_node(session_node, session_name, overwrite, overrides); | |
317ea246 JG |
3438 | if (!session_name && ret) { |
3439 | /* Loading error occurred. */ | |
3440 | goto end; | |
3441 | } else if (session_name) { | |
3442 | if (ret == 0) { | |
3443 | /* Target session found and loaded */ | |
3444 | session_found = 1; | |
3445 | break; | |
3446 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3447 | /* | |
3448 | * Ignore this error, we are looking for a | |
3449 | * specific session. | |
3450 | */ | |
3451 | ret = 0; | |
3452 | } else { | |
3453 | /* Loading error occurred. */ | |
3454 | goto end; | |
3455 | } | |
dcf266c0 JG |
3456 | } |
3457 | } | |
3458 | end: | |
3459 | xmlFreeDoc(doc); | |
3460 | if (!ret) { | |
a96bc65d | 3461 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3462 | } |
3463 | return ret; | |
3464 | } | |
3465 | ||
28ab034a JG |
3466 | static int load_session_from_path(const char *path, |
3467 | const char *session_name, | |
3468 | struct session_config_validation_ctx *validation_ctx, | |
3469 | int overwrite, | |
3470 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3471 | { |
3472 | int ret, session_found = !session_name; | |
cd9adb8b | 3473 | DIR *directory = nullptr; |
cce35f91 JG |
3474 | struct lttng_dynamic_buffer file_path; |
3475 | size_t path_len; | |
dcf266c0 | 3476 | |
a0377dfe FD |
3477 | LTTNG_ASSERT(path); |
3478 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3479 | path_len = strlen(path); |
3480 | lttng_dynamic_buffer_init(&file_path); | |
3481 | if (path_len >= LTTNG_PATH_MAX) { | |
3482 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
28ab034a JG |
3483 | path, |
3484 | path_len, | |
3485 | LTTNG_PATH_MAX); | |
cce35f91 JG |
3486 | ret = -LTTNG_ERR_INVALID; |
3487 | goto end; | |
3488 | } | |
dcf266c0 | 3489 | |
4af16958 DG |
3490 | directory = opendir(path); |
3491 | if (!directory) { | |
11143783 DG |
3492 | switch (errno) { |
3493 | case ENOTDIR: | |
0f0a81b5 DG |
3494 | /* Try the file loading. */ |
3495 | break; | |
11143783 DG |
3496 | case ENOENT: |
3497 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3498 | goto end; | |
3499 | default: | |
0f0a81b5 DG |
3500 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3501 | goto end; | |
4af16958 | 3502 | } |
dcf266c0 | 3503 | } |
4af16958 | 3504 | if (directory) { |
cce35f91 | 3505 | size_t file_path_root_len; |
dcf266c0 | 3506 | |
28ab034a | 3507 | ret = lttng_dynamic_buffer_set_capacity(&file_path, LTTNG_PATH_MAX); |
cce35f91 JG |
3508 | if (ret) { |
3509 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3510 | goto end; |
3511 | } | |
3512 | ||
28ab034a | 3513 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
cce35f91 | 3514 | if (ret) { |
dcf266c0 | 3515 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3516 | goto end; |
3517 | } | |
3518 | ||
cce35f91 | 3519 | if (file_path.data[file_path.size - 1] != '/') { |
28ab034a | 3520 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); |
cce35f91 JG |
3521 | if (ret) { |
3522 | ret = -LTTNG_ERR_NOMEM; | |
3523 | goto end; | |
3524 | } | |
dcf266c0 | 3525 | } |
cce35f91 | 3526 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3527 | |
3528 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3529 | for (;;) { |
3530 | size_t file_name_len; | |
3531 | struct dirent *result; | |
3532 | ||
3533 | /* | |
3534 | * When the end of the directory stream is reached, NULL | |
3535 | * is returned and errno is kept unchanged. When an | |
3536 | * error occurs, NULL is returned and errno is set | |
3537 | * accordingly. To distinguish between the two, set | |
3538 | * errno to zero before calling readdir(). | |
3539 | * | |
3540 | * On success, readdir() returns a pointer to a dirent | |
3541 | * structure. This structure may be statically | |
3542 | * allocated, do not attempt to free(3) it. | |
3543 | */ | |
3544 | errno = 0; | |
3545 | result = readdir(directory); | |
3546 | ||
ff86d8d0 | 3547 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3548 | if (!result) { |
3549 | if (errno) { | |
28ab034a JG |
3550 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", |
3551 | path); | |
9a2df626 MJ |
3552 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3553 | goto end; | |
3554 | } | |
3555 | break; | |
3556 | } | |
3557 | ||
3558 | file_name_len = strlen(result->d_name); | |
dcf266c0 | 3559 | |
28ab034a | 3560 | if (file_name_len <= sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { |
dcf266c0 JG |
3561 | continue; |
3562 | } | |
3563 | ||
cce35f91 JG |
3564 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3565 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
28ab034a JG |
3566 | result->d_name, |
3567 | /* +1 to account for NULL terminator. */ | |
3568 | file_path.size + file_name_len + 1, | |
3569 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3570 | continue; |
3571 | } | |
3572 | ||
cce35f91 | 3573 | /* Does the file end with .lttng? */ |
dcf266c0 | 3574 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
28ab034a | 3575 | result->d_name + file_name_len - |
5c7248cd JG |
3576 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1) != |
3577 | 0) { | |
dcf266c0 JG |
3578 | continue; |
3579 | } | |
3580 | ||
28ab034a JG |
3581 | ret = lttng_dynamic_buffer_append( |
3582 | &file_path, result->d_name, file_name_len + 1); | |
cce35f91 JG |
3583 | if (ret) { |
3584 | ret = -LTTNG_ERR_NOMEM; | |
3585 | goto end; | |
3586 | } | |
dcf266c0 | 3587 | |
28ab034a JG |
3588 | ret = load_session_from_file( |
3589 | file_path.data, session_name, validation_ctx, overwrite, overrides); | |
3590 | if (session_name && (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3591 | session_found = 1; |
3592 | break; | |
3593 | } | |
55c9e7ca JR |
3594 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3595 | goto end; | |
3596 | } | |
cce35f91 JG |
3597 | /* |
3598 | * Reset the buffer's size to the location of the | |
3599 | * path's trailing '/'. | |
3600 | */ | |
28ab034a | 3601 | ret = lttng_dynamic_buffer_set_size(&file_path, file_path_root_len); |
cce35f91 JG |
3602 | if (ret) { |
3603 | ret = -LTTNG_ERR_UNK; | |
3604 | goto end; | |
3605 | } | |
dcf266c0 | 3606 | } |
dcf266c0 | 3607 | } else { |
28ab034a JG |
3608 | ret = load_session_from_file( |
3609 | path, session_name, validation_ctx, overwrite, overrides); | |
dcf266c0 JG |
3610 | if (ret) { |
3611 | goto end; | |
dcf266c0 | 3612 | } |
55c9e7ca | 3613 | session_found = 1; |
dcf266c0 JG |
3614 | } |
3615 | ||
55c9e7ca | 3616 | ret = 0; |
dcf266c0 JG |
3617 | end: |
3618 | if (directory) { | |
3619 | if (closedir(directory)) { | |
3620 | PERROR("closedir"); | |
3621 | } | |
3622 | } | |
55c9e7ca JR |
3623 | if (!ret && !session_found) { |
3624 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3625 | } |
cce35f91 | 3626 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3627 | return ret; |
3628 | } | |
3629 | ||
ab38c13f DG |
3630 | /* |
3631 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3632 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3633 | */ |
3634 | static int validate_path_creds(const char *path) | |
3635 | { | |
3636 | int ret, uid = getuid(); | |
3637 | struct stat buf; | |
3638 | ||
a0377dfe | 3639 | LTTNG_ASSERT(path); |
ab38c13f | 3640 | |
cf53c06d | 3641 | if (uid == 0) { |
ab38c13f DG |
3642 | goto valid; |
3643 | } | |
3644 | ||
3645 | ret = stat(path, &buf); | |
3646 | if (ret < 0) { | |
3647 | if (errno != ENOENT) { | |
3648 | PERROR("stat"); | |
3649 | } | |
ab38c13f DG |
3650 | goto valid; |
3651 | } | |
3652 | ||
3653 | if (buf.st_uid != uid) { | |
3654 | goto invalid; | |
3655 | } | |
3656 | ||
3657 | valid: | |
ab38c13f | 3658 | return 1; |
cf53c06d DG |
3659 | invalid: |
3660 | return 0; | |
ab38c13f DG |
3661 | } |
3662 | ||
28ab034a JG |
3663 | int config_load_session(const char *path, |
3664 | const char *session_name, | |
3665 | int overwrite, | |
3666 | unsigned int autoload, | |
3667 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3668 | { |
3669 | int ret; | |
6c66fa0f | 3670 | bool session_loaded = false; |
cd9adb8b | 3671 | const char *path_ptr = nullptr; |
1c9a0b0e | 3672 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3673 | |
3674 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3675 | if (ret) { | |
3676 | goto end; | |
3677 | } | |
3678 | ||
3679 | if (!path) { | |
4f00620d | 3680 | const char *home_path; |
ab38c13f DG |
3681 | const char *sys_path; |
3682 | ||
dcf266c0 | 3683 | /* Try home path */ |
ab38c13f | 3684 | home_path = utils_get_home_dir(); |
dcf266c0 | 3685 | if (home_path) { |
db8196db | 3686 | char path_buf[PATH_MAX]; |
dcf266c0 | 3687 | |
d4fcf703 DG |
3688 | /* |
3689 | * Try user session configuration path. Ignore error here so we can | |
3690 | * continue loading the system wide sessions. | |
3691 | */ | |
ab38c13f | 3692 | if (autoload) { |
28ab034a JG |
3693 | ret = snprintf(path_buf, |
3694 | sizeof(path_buf), | |
3695 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3696 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3697 | home_path); | |
cf53c06d DG |
3698 | if (ret < 0) { |
3699 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3700 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3701 | goto end; |
3702 | } | |
3703 | ||
3704 | /* | |
3705 | * Credentials are only validated for the autoload in order to | |
3706 | * avoid any user session daemon to try to load kernel sessions | |
3707 | * automatically and failing all the times. | |
3708 | */ | |
db8196db | 3709 | ret = validate_path_creds(path_buf); |
cf53c06d | 3710 | if (ret) { |
db8196db | 3711 | path_ptr = path_buf; |
cf53c06d | 3712 | } |
ab38c13f | 3713 | } else { |
28ab034a JG |
3714 | ret = snprintf(path_buf, |
3715 | sizeof(path_buf), | |
3716 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3717 | home_path); | |
cf53c06d DG |
3718 | if (ret < 0) { |
3719 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3720 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3721 | goto end; |
3722 | } | |
db8196db | 3723 | path_ptr = path_buf; |
ab38c13f | 3724 | } |
cf53c06d | 3725 | if (path_ptr) { |
28ab034a JG |
3726 | ret = load_session_from_path(path_ptr, |
3727 | session_name, | |
3728 | &validation_ctx, | |
3729 | overwrite, | |
3730 | overrides); | |
d4fcf703 DG |
3731 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3732 | goto end; | |
3733 | } | |
3734 | /* | |
3735 | * Continue even if the session was found since we have to try | |
3736 | * the system wide sessions. | |
3737 | */ | |
6c66fa0f | 3738 | session_loaded = true; |
ab38c13f | 3739 | } |
d4fcf703 | 3740 | } |
ab38c13f | 3741 | |
cf53c06d | 3742 | /* Reset path pointer for the system wide dir. */ |
cd9adb8b | 3743 | path_ptr = nullptr; |
cf53c06d | 3744 | |
d4fcf703 DG |
3745 | /* Try system wide configuration directory. */ |
3746 | if (autoload) { | |
28ab034a JG |
3747 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH |
3748 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3749 | ret = validate_path_creds(sys_path); |
3750 | if (ret) { | |
3751 | path_ptr = sys_path; | |
3752 | } | |
d4fcf703 | 3753 | } else { |
cf53c06d DG |
3754 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3755 | path_ptr = sys_path; | |
d4fcf703 DG |
3756 | } |
3757 | ||
cf53c06d | 3758 | if (path_ptr) { |
28ab034a JG |
3759 | ret = load_session_from_path( |
3760 | path_ptr, session_name, &validation_ctx, overwrite, overrides); | |
6c66fa0f JG |
3761 | if (!ret) { |
3762 | session_loaded = true; | |
3763 | } | |
55c9e7ca JR |
3764 | } else { |
3765 | ret = 0; | |
dcf266c0 JG |
3766 | } |
3767 | } else { | |
3768 | ret = access(path, F_OK); | |
3769 | if (ret < 0) { | |
3770 | PERROR("access"); | |
3771 | switch (errno) { | |
3772 | case ENOENT: | |
3773 | ret = -LTTNG_ERR_INVALID; | |
3774 | WARN("Session configuration path does not exist."); | |
3775 | break; | |
3776 | case EACCES: | |
3777 | ret = -LTTNG_ERR_EPERM; | |
3778 | break; | |
3779 | default: | |
3780 | ret = -LTTNG_ERR_UNK; | |
3781 | break; | |
3782 | } | |
3783 | goto end; | |
3784 | } | |
3785 | ||
28ab034a JG |
3786 | ret = load_session_from_path( |
3787 | path, session_name, &validation_ctx, overwrite, overrides); | |
dcf266c0 JG |
3788 | } |
3789 | end: | |
3790 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3791 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3792 | /* | |
3793 | * Don't report an error if no sessions are found when called | |
3794 | * without a session_name or a search path. | |
3795 | */ | |
3796 | ret = 0; | |
3797 | } | |
6c66fa0f JG |
3798 | |
3799 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3800 | /* A matching session was found in one of the search paths. */ | |
3801 | ret = 0; | |
3802 | } | |
dcf266c0 JG |
3803 | return ret; |
3804 | } | |
56766c75 | 3805 | |
cd9adb8b | 3806 | static void __attribute__((destructor)) session_config_exit() |
56766c75 JG |
3807 | { |
3808 | xmlCleanupParser(); | |
3809 | } |