Commit | Line | Data |
---|---|---|
1501a7f3 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1501a7f3 | 3 | * |
c922647d | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
1501a7f3 | 5 | * |
1501a7f3 JG |
6 | */ |
7 | ||
159b042f | 8 | #include "lttng/tracker.h" |
6c1c0768 | 9 | #define _LGPL_SOURCE |
1501a7f3 | 10 | #include <ctype.h> |
1501a7f3 JG |
11 | #include <stdio.h> |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
36f2332b | 14 | #include <inttypes.h> |
dcf266c0 JG |
15 | #include <dirent.h> |
16 | #include <unistd.h> | |
17 | #include <sys/types.h> | |
18 | #include <sys/stat.h> | |
6c66fa0f | 19 | #include <stdbool.h> |
1501a7f3 | 20 | |
c9e313bc SM |
21 | #include <common/defaults.hpp> |
22 | #include <common/error.hpp> | |
23 | #include <common/macros.hpp> | |
24 | #include <common/utils.hpp> | |
25 | #include <common/dynamic-buffer.hpp> | |
26 | #include <common/compat/getenv.hpp> | |
fb198a11 JG |
27 | #include <lttng/lttng-error.h> |
28 | #include <libxml/parser.h> | |
29 | #include <libxml/valid.h> | |
30 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
31 | #include <libxml/tree.h> |
32 | #include <lttng/lttng.h> | |
33 | #include <lttng/snapshot.h> | |
259c2674 | 34 | #include <lttng/rotation.h> |
c1e83fb4 | 35 | #include <lttng/userspace-probe.h> |
1501a7f3 | 36 | |
c9e313bc SM |
37 | #include "session-config.hpp" |
38 | #include "config-internal.hpp" | |
1501a7f3 | 39 | |
c1e83fb4 FD |
40 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
41 | ||
f1494934 | 42 | namespace { |
dcf266c0 JG |
43 | struct session_config_validation_ctx { |
44 | xmlSchemaParserCtxtPtr parser_ctx; | |
45 | xmlSchemaPtr schema; | |
46 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
47 | }; | |
f1494934 | 48 | } /* namespace */ |
dcf266c0 | 49 | |
ca806b0b | 50 | const char * const config_element_all = "all"; |
3afa94ae SM |
51 | LTTNG_EXPORT const char *config_xml_encoding = "UTF-8"; |
52 | LTTNG_EXPORT size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ | |
53 | LTTNG_EXPORT const char *config_xml_indent_string = "\t"; | |
54 | LTTNG_EXPORT const char *config_xml_true = "true"; | |
55 | LTTNG_EXPORT const char *config_xml_false = "false"; | |
1501a7f3 | 56 | |
fb198a11 JG |
57 | const char * const config_element_channel = "channel"; |
58 | const char * const config_element_channels = "channels"; | |
59 | const char * const config_element_domain = "domain"; | |
60 | const char * const config_element_domains = "domains"; | |
61 | const char * const config_element_event = "event"; | |
62 | const char * const config_element_events = "events"; | |
63 | const char * const config_element_context = "context"; | |
64 | const char * const config_element_contexts = "contexts"; | |
65 | const char * const config_element_attributes = "attributes"; | |
66 | const char * const config_element_exclusion = "exclusion"; | |
67 | const char * const config_element_exclusions = "exclusions"; | |
68 | const char * const config_element_function_attributes = "function_attributes"; | |
69 | const char * const config_element_probe_attributes = "probe_attributes"; | |
70 | const char * const config_element_symbol_name = "symbol_name"; | |
71 | const char * const config_element_address = "address"; | |
72 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 73 | |
ca806b0b SM |
74 | const char * const config_element_userspace_probe_lookup = "lookup_method"; |
75 | const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
76 | const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
77 | const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
78 | const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
79 | const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
80 | const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
81 | const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
82 | const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
83 | const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 84 | |
fb198a11 JG |
85 | const char * const config_element_name = "name"; |
86 | const char * const config_element_enabled = "enabled"; | |
87 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
88 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
89 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
90 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
91 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
ca806b0b SM |
92 | const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
93 | const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
94 | const char * const config_element_output = "output"; |
95 | const char * const config_element_output_type = "output_type"; | |
96 | const char * const config_element_tracefile_size = "tracefile_size"; | |
97 | const char * const config_element_tracefile_count = "tracefile_count"; | |
98 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ca806b0b SM |
99 | const char * const config_element_discarded_events = "discarded_events"; |
100 | const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
101 | const char * const config_element_type = "type"; |
102 | const char * const config_element_buffer_type = "buffer_type"; | |
103 | const char * const config_element_session = "session"; | |
104 | const char * const config_element_sessions = "sessions"; | |
ca806b0b SM |
105 | const char * const config_element_context_perf = "perf"; |
106 | const char * const config_element_context_app = "app"; | |
107 | const char * const config_element_context_app_provider_name = "provider_name"; | |
108 | const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
109 | const char * const config_element_config = "config"; |
110 | const char * const config_element_started = "started"; | |
111 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
112 | const char * const config_element_loglevel = "loglevel"; | |
113 | const char * const config_element_loglevel_type = "loglevel_type"; | |
114 | const char * const config_element_filter = "filter"; | |
ca806b0b | 115 | const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
116 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
117 | const char * const config_element_consumer_output = "consumer_output"; | |
118 | const char * const config_element_destination = "destination"; | |
119 | const char * const config_element_path = "path"; | |
120 | const char * const config_element_net_output = "net_output"; | |
121 | const char * const config_element_control_uri = "control_uri"; | |
122 | const char * const config_element_data_uri = "data_uri"; | |
123 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
124 | const char * const config_element_pid = "pid"; |
125 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 126 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
159b042f | 127 | |
ca806b0b SM |
128 | const char * const config_element_process_attr_id = "id"; |
129 | const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
130 | const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
131 | const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
132 | const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
133 | const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
134 | const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
135 | const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
136 | const char * const config_element_process_attr_values = "process_attr_values"; | |
137 | const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
138 | const char * const config_element_process_attr_pid_value = "pid"; | |
139 | const char * const config_element_process_attr_vpid_value = "vpid"; | |
140 | const char * const config_element_process_attr_uid_value = "uid"; | |
141 | const char * const config_element_process_attr_vuid_value = "vuid"; | |
142 | const char * const config_element_process_attr_gid_value = "gid"; | |
143 | const char * const config_element_process_attr_vgid_value = "vgid"; | |
144 | const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 145 | |
f7af9a72 | 146 | /* Used for support of legacy tracker serialization (< 2.12). */ |
ca806b0b SM |
147 | const char * const config_element_trackers_legacy = "trackers"; |
148 | const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
149 | const char * const config_element_tracker_targets_legacy = "targets"; | |
ca806b0b SM |
150 | const char * const config_element_tracker_pid_legacy = "pid"; |
151 | ||
152 | const char * const config_element_rotation_schedules = "rotation_schedules"; | |
153 | const char * const config_element_rotation_schedule_periodic = "periodic"; | |
154 | const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
155 | const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
156 | const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 157 | |
fb198a11 JG |
158 | const char * const config_domain_type_kernel = "KERNEL"; |
159 | const char * const config_domain_type_ust = "UST"; | |
160 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 161 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 162 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
163 | |
164 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
165 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
166 | const char * const config_buffer_type_global = "GLOBAL"; | |
167 | ||
168 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
169 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
170 | ||
171 | const char * const config_output_type_splice = "SPLICE"; | |
172 | const char * const config_output_type_mmap = "MMAP"; | |
173 | ||
174 | const char * const config_loglevel_type_all = "ALL"; | |
175 | const char * const config_loglevel_type_range = "RANGE"; | |
176 | const char * const config_loglevel_type_single = "SINGLE"; | |
177 | ||
178 | const char * const config_event_type_all = "ALL"; | |
179 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
180 | const char * const config_event_type_probe = "PROBE"; | |
ca806b0b | 181 | const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
182 | const char * const config_event_type_function = "FUNCTION"; |
183 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
184 | const char * const config_event_type_noop = "NOOP"; | |
185 | const char * const config_event_type_syscall = "SYSCALL"; | |
186 | const char * const config_event_type_kprobe = "KPROBE"; | |
187 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
188 | ||
189 | const char * const config_event_context_pid = "PID"; | |
190 | const char * const config_event_context_procname = "PROCNAME"; | |
191 | const char * const config_event_context_prio = "PRIO"; | |
192 | const char * const config_event_context_nice = "NICE"; | |
193 | const char * const config_event_context_vpid = "VPID"; | |
194 | const char * const config_event_context_tid = "TID"; | |
195 | const char * const config_event_context_vtid = "VTID"; | |
196 | const char * const config_event_context_ppid = "PPID"; | |
197 | const char * const config_event_context_vppid = "VPPID"; | |
198 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
199 | const char * const config_event_context_hostname = "HOSTNAME"; | |
200 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 201 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ca806b0b SM |
202 | const char * const config_event_context_app = "APP"; |
203 | const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
204 | const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
205 | const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
206 | const char * const config_event_context_migratable = "MIGRATABLE"; | |
207 | const char * const config_event_context_callstack_user= "CALLSTACK_USER"; | |
208 | const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
209 | const char * const config_event_context_cgroup_ns = "CGROUP_NS"; | |
210 | const char * const config_event_context_ipc_ns = "IPC_NS"; | |
211 | const char * const config_event_context_mnt_ns = "MNT_NS"; | |
212 | const char * const config_event_context_net_ns = "NET_NS"; | |
213 | const char * const config_event_context_pid_ns = "PID_NS"; | |
214 | const char * const config_event_context_time_ns = "TIME_NS"; | |
215 | const char * const config_event_context_user_ns = "USER_NS"; | |
216 | const char * const config_event_context_uts_ns = "UTS_NS"; | |
217 | const char * const config_event_context_uid = "UID"; | |
218 | const char * const config_event_context_euid = "EUID"; | |
219 | const char * const config_event_context_suid = "SUID"; | |
220 | const char * const config_event_context_gid = "GID"; | |
221 | const char * const config_event_context_egid = "EGID"; | |
222 | const char * const config_event_context_sgid = "SGID"; | |
223 | const char * const config_event_context_vuid = "VUID"; | |
224 | const char * const config_event_context_veuid = "VEUID"; | |
225 | const char * const config_event_context_vsuid = "VSUID"; | |
226 | const char * const config_event_context_vgid = "VGID"; | |
227 | const char * const config_event_context_vegid = "VEGID"; | |
228 | const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 229 | |
55b1df44 JR |
230 | const char * const config_element_session_trace_format = "trace_format"; |
231 | const char * const config_element_session_trace_format_ctf1 = "ctf1"; | |
232 | const char * const config_element_session_trace_format_ctf2 = "ctf2"; | |
233 | ||
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 | { | |
257 | xmlChar *out_str = NULL; | |
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); | |
283 | out_str = NULL; | |
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 | ||
305 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
306 | if (!buffer) { | |
307 | goto error_destroy; | |
308 | } | |
309 | ||
310 | writer->writer = xmlNewTextWriter(buffer); | |
311 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
312 | config_xml_encoding, NULL); | |
313 | if (ret < 0) { | |
314 | goto error_destroy; | |
315 | } | |
316 | ||
317 | ret = xmlTextWriterSetIndentString(writer->writer, | |
318 | BAD_CAST config_xml_indent_string); | |
705bb62f | 319 | if (ret) { |
36f2332b JG |
320 | goto error_destroy; |
321 | } | |
322 | ||
705bb62f JRJ |
323 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
324 | if (ret) { | |
36f2332b JG |
325 | goto error_destroy; |
326 | } | |
327 | ||
328 | end: | |
329 | return writer; | |
330 | error_destroy: | |
331 | config_writer_destroy(writer); | |
332 | return NULL; | |
333 | } | |
334 | ||
36f2332b JG |
335 | int config_writer_destroy(struct config_writer *writer) |
336 | { | |
337 | int ret = 0; | |
338 | ||
339 | if (!writer) { | |
340 | ret = -EINVAL; | |
341 | goto end; | |
342 | } | |
343 | ||
344 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
345 | WARN("Could not close XML document"); | |
346 | ret = -EIO; | |
347 | } | |
348 | ||
349 | if (writer->writer) { | |
350 | xmlFreeTextWriter(writer->writer); | |
351 | } | |
352 | ||
353 | free(writer); | |
354 | end: | |
355 | return ret; | |
356 | } | |
357 | ||
36f2332b JG |
358 | int config_writer_open_element(struct config_writer *writer, |
359 | const char *element_name) | |
360 | { | |
361 | int ret; | |
362 | xmlChar *encoded_element_name; | |
363 | ||
364 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
365 | ret = -1; | |
366 | goto end; | |
367 | } | |
368 | ||
369 | encoded_element_name = encode_string(element_name); | |
370 | if (!encoded_element_name) { | |
371 | ret = -1; | |
372 | goto end; | |
373 | } | |
374 | ||
375 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
376 | xmlFree(encoded_element_name); | |
377 | end: | |
28676a1d | 378 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
379 | } |
380 | ||
e10b6a1c JG |
381 | int config_writer_write_attribute(struct config_writer *writer, |
382 | const char *name, const char *value) | |
383 | { | |
384 | int ret; | |
385 | xmlChar *encoded_name = NULL; | |
386 | xmlChar *encoded_value = NULL; | |
387 | ||
388 | if (!writer || !writer->writer || !name || !name[0]) { | |
389 | ret = -1; | |
390 | goto end; | |
391 | } | |
392 | ||
393 | encoded_name = encode_string(name); | |
394 | if (!encoded_name) { | |
395 | ret = -1; | |
396 | goto end; | |
397 | } | |
398 | ||
399 | encoded_value = encode_string(value); | |
400 | if (!encoded_value) { | |
401 | ret = -1; | |
402 | goto end; | |
403 | } | |
404 | ||
405 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
406 | encoded_value); | |
407 | end: | |
408 | xmlFree(encoded_name); | |
409 | xmlFree(encoded_value); | |
410 | return ret >= 0 ? 0 : ret; | |
411 | } | |
412 | ||
36f2332b JG |
413 | int config_writer_close_element(struct config_writer *writer) |
414 | { | |
415 | int ret; | |
416 | ||
417 | if (!writer || !writer->writer) { | |
418 | ret = -1; | |
419 | goto end; | |
420 | } | |
421 | ||
422 | ret = xmlTextWriterEndElement(writer->writer); | |
423 | end: | |
28676a1d | 424 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
425 | } |
426 | ||
36f2332b JG |
427 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
428 | const char *element_name, uint64_t value) | |
429 | { | |
430 | int ret; | |
431 | xmlChar *encoded_element_name; | |
432 | ||
433 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
434 | ret = -1; | |
435 | goto end; | |
436 | } | |
437 | ||
438 | encoded_element_name = encode_string(element_name); | |
439 | if (!encoded_element_name) { | |
440 | ret = -1; | |
441 | goto end; | |
442 | } | |
443 | ||
444 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
445 | encoded_element_name, "%" PRIu64, value); | |
446 | xmlFree(encoded_element_name); | |
447 | end: | |
28676a1d | 448 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
449 | } |
450 | ||
36f2332b JG |
451 | int config_writer_write_element_signed_int(struct config_writer *writer, |
452 | const char *element_name, int64_t value) | |
453 | { | |
454 | int ret; | |
455 | xmlChar *encoded_element_name; | |
456 | ||
457 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
458 | ret = -1; | |
459 | goto end; | |
460 | } | |
461 | ||
462 | encoded_element_name = encode_string(element_name); | |
463 | if (!encoded_element_name) { | |
464 | ret = -1; | |
465 | goto end; | |
466 | } | |
467 | ||
468 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
469 | encoded_element_name, "%" PRIi64, value); | |
470 | xmlFree(encoded_element_name); | |
471 | end: | |
28676a1d | 472 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
473 | } |
474 | ||
36f2332b JG |
475 | int config_writer_write_element_bool(struct config_writer *writer, |
476 | const char *element_name, int value) | |
477 | { | |
478 | return config_writer_write_element_string(writer, element_name, | |
479 | value ? config_xml_true : config_xml_false); | |
480 | } | |
481 | ||
2b166400 JR |
482 | int config_writer_write_element_double(struct config_writer *writer, |
483 | const char *element_name, | |
484 | double value) | |
485 | { | |
486 | int ret; | |
487 | xmlChar *encoded_element_name; | |
488 | ||
489 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
490 | ret = -1; | |
491 | goto end; | |
492 | } | |
493 | ||
494 | encoded_element_name = encode_string(element_name); | |
495 | if (!encoded_element_name) { | |
496 | ret = -1; | |
497 | goto end; | |
498 | } | |
499 | ||
500 | ret = xmlTextWriterWriteFormatElement( | |
501 | writer->writer, encoded_element_name, "%f", value); | |
502 | xmlFree(encoded_element_name); | |
503 | end: | |
504 | return ret >= 0 ? 0 : ret; | |
505 | } | |
506 | ||
36f2332b JG |
507 | int config_writer_write_element_string(struct config_writer *writer, |
508 | const char *element_name, const char *value) | |
509 | { | |
510 | int ret; | |
511 | xmlChar *encoded_element_name = NULL; | |
512 | xmlChar *encoded_value = NULL; | |
513 | ||
514 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
515 | !value) { | |
516 | ret = -1; | |
517 | goto end; | |
518 | } | |
519 | ||
520 | encoded_element_name = encode_string(element_name); | |
521 | if (!encoded_element_name) { | |
522 | ret = -1; | |
523 | goto end; | |
524 | } | |
525 | ||
526 | encoded_value = encode_string(value); | |
527 | if (!encoded_value) { | |
528 | ret = -1; | |
529 | goto end; | |
530 | } | |
531 | ||
532 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 533 | encoded_value); |
36f2332b JG |
534 | end: |
535 | xmlFree(encoded_element_name); | |
536 | xmlFree(encoded_value); | |
28676a1d | 537 | return ret >= 0 ? 0 : ret; |
36f2332b | 538 | } |
dcf266c0 | 539 | |
d22ad5f8 | 540 | static ATTR_FORMAT_PRINTF(2, 3) |
f46376a1 | 541 | void xml_error_handler(void *ctx __attribute__((unused)), const char *format, ...) |
dcf266c0 JG |
542 | { |
543 | char *errMsg; | |
544 | va_list args; | |
545 | int ret; | |
546 | ||
547 | va_start(args, format); | |
548 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 549 | va_end(args); |
dcf266c0 JG |
550 | if (ret == -1) { |
551 | ERR("String allocation failed in xml error handler"); | |
552 | return; | |
553 | } | |
dcf266c0 JG |
554 | |
555 | fprintf(stderr, "XML Error: %s", errMsg); | |
556 | free(errMsg); | |
557 | } | |
558 | ||
559 | static | |
560 | void fini_session_config_validation_ctx( | |
561 | struct session_config_validation_ctx *ctx) | |
562 | { | |
563 | if (ctx->parser_ctx) { | |
564 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
565 | } | |
566 | ||
567 | if (ctx->schema) { | |
568 | xmlSchemaFree(ctx->schema); | |
569 | } | |
570 | ||
571 | if (ctx->schema_validation_ctx) { | |
572 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
573 | } | |
574 | ||
575 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
576 | } | |
577 | ||
54e399cb | 578 | static |
a3ecaea8 | 579 | char *get_session_config_xsd_path(void) |
54e399cb JG |
580 | { |
581 | char *xsd_path; | |
e8fa9fb0 | 582 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
583 | size_t base_path_len; |
584 | size_t max_path_len; | |
585 | ||
586 | if (!base_path) { | |
587 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
588 | } | |
589 | ||
590 | base_path_len = strlen(base_path); | |
591 | max_path_len = base_path_len + | |
592 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
64803277 | 593 | xsd_path = zmalloc<char>(max_path_len); |
54e399cb JG |
594 | if (!xsd_path) { |
595 | goto end; | |
596 | } | |
597 | ||
00a7f6f8 | 598 | strcpy(xsd_path, base_path); |
54e399cb JG |
599 | if (xsd_path[base_path_len - 1] != '/') { |
600 | xsd_path[base_path_len++] = '/'; | |
601 | } | |
602 | ||
00a7f6f8 | 603 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
604 | end: |
605 | return xsd_path; | |
606 | } | |
607 | ||
dcf266c0 JG |
608 | static |
609 | int init_session_config_validation_ctx( | |
610 | struct session_config_validation_ctx *ctx) | |
611 | { | |
612 | int ret; | |
54e399cb JG |
613 | char *xsd_path = get_session_config_xsd_path(); |
614 | ||
615 | if (!xsd_path) { | |
616 | ret = -LTTNG_ERR_NOMEM; | |
617 | goto end; | |
618 | } | |
dcf266c0 | 619 | |
54e399cb | 620 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
621 | if (!ctx->parser_ctx) { |
622 | ERR("XSD parser context creation failed"); | |
623 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
624 | goto end; | |
625 | } | |
626 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
627 | xml_error_handler, NULL); | |
628 | ||
629 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
630 | if (!ctx->schema) { | |
631 | ERR("XSD parsing failed"); | |
632 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
633 | goto end; | |
634 | } | |
635 | ||
636 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
637 | if (!ctx->schema_validation_ctx) { | |
638 | ERR("XSD validation context creation failed"); | |
639 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
640 | goto end; | |
641 | } | |
642 | ||
643 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
644 | xml_error_handler, NULL); | |
645 | ret = 0; | |
646 | ||
647 | end: | |
648 | if (ret) { | |
649 | fini_session_config_validation_ctx(ctx); | |
650 | } | |
651 | ||
54e399cb | 652 | free(xsd_path); |
dcf266c0 JG |
653 | return ret; |
654 | } | |
655 | ||
656 | static | |
657 | int parse_uint(xmlChar *str, uint64_t *val) | |
658 | { | |
659 | int ret; | |
660 | char *endptr; | |
661 | ||
662 | if (!str || !val) { | |
663 | ret = -1; | |
664 | goto end; | |
665 | } | |
666 | ||
667 | *val = strtoull((const char *) str, &endptr, 10); | |
668 | if (!endptr || *endptr) { | |
669 | ret = -1; | |
670 | } else { | |
671 | ret = 0; | |
672 | } | |
673 | ||
674 | end: | |
675 | return ret; | |
676 | } | |
677 | ||
678 | static | |
679 | int parse_int(xmlChar *str, int64_t *val) | |
680 | { | |
681 | int ret; | |
682 | char *endptr; | |
683 | ||
684 | if (!str || !val) { | |
685 | ret = -1; | |
686 | goto end; | |
687 | } | |
688 | ||
689 | *val = strtoll((const char *) str, &endptr, 10); | |
690 | if (!endptr || *endptr) { | |
691 | ret = -1; | |
692 | } else { | |
693 | ret = 0; | |
694 | } | |
695 | ||
696 | end: | |
697 | return ret; | |
698 | } | |
699 | ||
700 | static | |
701 | int parse_bool(xmlChar *str, int *val) | |
702 | { | |
703 | int ret = 0; | |
704 | ||
705 | if (!str || !val) { | |
706 | ret = -1; | |
707 | goto end; | |
708 | } | |
709 | ||
47945b17 SM |
710 | if (!strcmp((const char *) str, config_xml_true) || |
711 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 712 | *val = 1; |
47945b17 SM |
713 | } else if (!strcmp((const char *) str, config_xml_false) || |
714 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
715 | *val = 0; |
716 | } else { | |
a22a57cb | 717 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
718 | (const char *) str); |
719 | ret = -1; | |
720 | } | |
721 | end: | |
722 | return ret; | |
723 | } | |
724 | ||
725 | static | |
726 | int get_domain_type(xmlChar *domain) | |
727 | { | |
728 | int ret; | |
729 | ||
730 | if (!domain) { | |
731 | goto error; | |
732 | } | |
733 | ||
734 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
735 | ret = LTTNG_DOMAIN_KERNEL; | |
736 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
737 | ret = LTTNG_DOMAIN_UST; | |
738 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
739 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
740 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
741 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
742 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
743 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
744 | } else { |
745 | goto error; | |
746 | } | |
747 | ||
748 | return ret; | |
749 | error: | |
750 | return -1; | |
751 | } | |
752 | ||
753 | static | |
754 | int get_buffer_type(xmlChar *buffer_type) | |
755 | { | |
756 | int ret; | |
757 | ||
758 | if (!buffer_type) { | |
759 | goto error; | |
760 | } | |
761 | ||
762 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
763 | ret = LTTNG_BUFFER_GLOBAL; | |
764 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
765 | ret = LTTNG_BUFFER_PER_UID; | |
766 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
767 | ret = LTTNG_BUFFER_PER_PID; | |
768 | } else { | |
769 | goto error; | |
770 | } | |
771 | ||
772 | return ret; | |
773 | error: | |
774 | return -1; | |
775 | } | |
776 | ||
777 | static | |
778 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
779 | { | |
780 | int ret; | |
781 | ||
782 | if (!overwrite_mode) { | |
783 | goto error; | |
784 | } | |
785 | ||
786 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
787 | ret = 1; | |
788 | } else if (!strcmp((char *) overwrite_mode, | |
789 | config_overwrite_mode_discard)) { | |
790 | ret = 0; | |
791 | } else { | |
792 | goto error; | |
793 | } | |
794 | ||
795 | return ret; | |
796 | error: | |
797 | return -1; | |
798 | } | |
799 | ||
800 | static | |
801 | int get_output_type(xmlChar *output_type) | |
802 | { | |
803 | int ret; | |
804 | ||
805 | if (!output_type) { | |
806 | goto error; | |
807 | } | |
808 | ||
809 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
810 | ret = LTTNG_EVENT_MMAP; | |
811 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
812 | ret = LTTNG_EVENT_SPLICE; | |
813 | } else { | |
814 | goto error; | |
815 | } | |
816 | ||
817 | return ret; | |
818 | error: | |
819 | return -1; | |
820 | } | |
821 | ||
822 | static | |
823 | int get_event_type(xmlChar *event_type) | |
824 | { | |
825 | int ret; | |
826 | ||
827 | if (!event_type) { | |
828 | goto error; | |
829 | } | |
830 | ||
831 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
832 | ret = LTTNG_EVENT_ALL; | |
833 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
834 | ret = LTTNG_EVENT_TRACEPOINT; | |
835 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
836 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
837 | } else if (!strcmp((char *) event_type, |
838 | config_event_type_userspace_probe)) { | |
839 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
840 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
841 | ret = LTTNG_EVENT_FUNCTION; | |
842 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 843 | config_event_type_function_entry)) { |
dcf266c0 JG |
844 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
845 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
846 | ret = LTTNG_EVENT_NOOP; | |
847 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
848 | ret = LTTNG_EVENT_SYSCALL; | |
849 | } else { | |
850 | goto error; | |
851 | } | |
852 | ||
853 | return ret; | |
854 | error: | |
855 | return -1; | |
856 | } | |
857 | ||
858 | static | |
859 | int get_loglevel_type(xmlChar *loglevel_type) | |
860 | { | |
861 | int ret; | |
862 | ||
863 | if (!loglevel_type) { | |
864 | goto error; | |
865 | } | |
866 | ||
867 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
868 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
869 | } else if (!strcmp((char *) loglevel_type, | |
870 | config_loglevel_type_range)) { | |
871 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
872 | } else if (!strcmp((char *) loglevel_type, | |
873 | config_loglevel_type_single)) { | |
874 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
875 | } else { | |
876 | goto error; | |
877 | } | |
878 | ||
879 | return ret; | |
880 | error: | |
881 | return -1; | |
882 | } | |
883 | ||
884 | /* | |
885 | * Return the context type or -1 on error. | |
886 | */ | |
887 | static | |
888 | int get_context_type(xmlChar *context_type) | |
889 | { | |
890 | int ret; | |
891 | ||
892 | if (!context_type) { | |
893 | goto error; | |
894 | } | |
895 | ||
896 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
897 | ret = LTTNG_EVENT_CONTEXT_PID; | |
898 | } else if (!strcmp((char *) context_type, | |
899 | config_event_context_procname)) { | |
900 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
901 | } else if (!strcmp((char *) context_type, | |
902 | config_event_context_prio)) { | |
903 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
904 | } else if (!strcmp((char *) context_type, | |
905 | config_event_context_nice)) { | |
906 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
907 | } else if (!strcmp((char *) context_type, | |
908 | config_event_context_vpid)) { | |
909 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
910 | } else if (!strcmp((char *) context_type, | |
911 | config_event_context_tid)) { | |
912 | ret = LTTNG_EVENT_CONTEXT_TID; | |
913 | } else if (!strcmp((char *) context_type, | |
914 | config_event_context_vtid)) { | |
915 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
916 | } else if (!strcmp((char *) context_type, | |
917 | config_event_context_ppid)) { | |
918 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
919 | } else if (!strcmp((char *) context_type, | |
920 | config_event_context_vppid)) { | |
921 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
922 | } else if (!strcmp((char *) context_type, | |
923 | config_event_context_pthread_id)) { | |
924 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
925 | } else if (!strcmp((char *) context_type, | |
926 | config_event_context_hostname)) { | |
927 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
928 | } else if (!strcmp((char *) context_type, | |
929 | config_event_context_ip)) { | |
930 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
931 | } else if (!strcmp((char *) context_type, |
932 | config_event_context_interruptible)) { | |
933 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
934 | } else if (!strcmp((char *) context_type, | |
935 | config_event_context_preemptible)) { | |
936 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
937 | } else if (!strcmp((char *) context_type, | |
938 | config_event_context_need_reschedule)) { | |
939 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
940 | } else if (!strcmp((char *) context_type, | |
941 | config_event_context_migratable)) { | |
942 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
943 | } else if (!strcmp((char *) context_type, |
944 | config_event_context_callstack_user)) { | |
945 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
946 | } else if (!strcmp((char *) context_type, | |
947 | config_event_context_callstack_kernel)) { | |
948 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
949 | } else if (!strcmp((char *) context_type, |
950 | config_event_context_cgroup_ns)) { | |
951 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
952 | } else if (!strcmp((char *) context_type, | |
953 | config_event_context_ipc_ns)) { | |
954 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
955 | } else if (!strcmp((char *) context_type, | |
956 | config_event_context_mnt_ns)) { | |
957 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
958 | } else if (!strcmp((char *) context_type, | |
959 | config_event_context_net_ns)) { | |
960 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
961 | } else if (!strcmp((char *) context_type, | |
962 | config_event_context_pid_ns)) { | |
963 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
964 | } else if (!strcmp((char *) context_type, |
965 | config_event_context_time_ns)) { | |
966 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
967 | } else if (!strcmp((char *) context_type, |
968 | config_event_context_user_ns)) { | |
969 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
970 | } else if (!strcmp((char *) context_type, | |
971 | config_event_context_uts_ns)) { | |
972 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
973 | } else if (!strcmp((char *) context_type, |
974 | config_event_context_uid)) { | |
975 | ret = LTTNG_EVENT_CONTEXT_UID; | |
976 | } else if (!strcmp((char *) context_type, | |
977 | config_event_context_euid)) { | |
978 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
979 | } else if (!strcmp((char *) context_type, | |
980 | config_event_context_suid)) { | |
981 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
982 | } else if (!strcmp((char *) context_type, | |
983 | config_event_context_gid)) { | |
984 | ret = LTTNG_EVENT_CONTEXT_GID; | |
985 | } else if (!strcmp((char *) context_type, | |
986 | config_event_context_egid)) { | |
987 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
988 | } else if (!strcmp((char *) context_type, | |
989 | config_event_context_sgid)) { | |
990 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
991 | } else if (!strcmp((char *) context_type, | |
992 | config_event_context_vuid)) { | |
993 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
994 | } else if (!strcmp((char *) context_type, | |
995 | config_event_context_veuid)) { | |
996 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
997 | } else if (!strcmp((char *) context_type, | |
998 | config_event_context_vsuid)) { | |
999 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1000 | } else if (!strcmp((char *) context_type, | |
1001 | config_event_context_vgid)) { | |
1002 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1003 | } else if (!strcmp((char *) context_type, | |
1004 | config_event_context_vegid)) { | |
1005 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1006 | } else if (!strcmp((char *) context_type, | |
1007 | config_event_context_vsgid)) { | |
1008 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1009 | } else { |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | return ret; | |
1014 | error: | |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | static | |
1019 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1020 | { | |
1021 | int ret; | |
1022 | xmlNodePtr node; | |
1023 | ||
1024 | for (node = xmlFirstElementChild(domain_node); node; | |
1025 | node = xmlNextElementSibling(node)) { | |
1026 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1027 | /* domain type */ | |
1028 | xmlChar *node_content = xmlNodeGetContent(node); | |
1029 | if (!node_content) { | |
1030 | ret = -LTTNG_ERR_NOMEM; | |
1031 | goto end; | |
1032 | } | |
1033 | ||
1034 | ret = get_domain_type(node_content); | |
1035 | free(node_content); | |
1036 | if (ret < 0) { | |
1037 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1038 | goto end; | |
1039 | } | |
1040 | ||
3afa94ae | 1041 | domain->type = (lttng_domain_type) ret; |
dcf266c0 JG |
1042 | } else if (!strcmp((const char *) node->name, |
1043 | config_element_buffer_type)) { | |
1044 | /* buffer type */ | |
1045 | xmlChar *node_content = xmlNodeGetContent(node); | |
1046 | if (!node_content) { | |
1047 | ret = -LTTNG_ERR_NOMEM; | |
1048 | goto end; | |
1049 | } | |
1050 | ||
1051 | ret = get_buffer_type(node_content); | |
1052 | free(node_content); | |
1053 | if (ret < 0) { | |
1054 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1055 | goto end; | |
1056 | } | |
1057 | ||
3afa94ae | 1058 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
1059 | } |
1060 | } | |
1061 | ret = 0; | |
1062 | end: | |
1063 | return ret; | |
1064 | } | |
1065 | ||
1066 | static | |
1067 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1068 | char **data_uri) | |
1069 | { | |
1070 | xmlNodePtr node; | |
1071 | ||
1072 | for (node = xmlFirstElementChild(net_output_node); node; | |
1073 | node = xmlNextElementSibling(node)) { | |
1074 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1075 | /* control_uri */ | |
1076 | *control_uri = (char *) xmlNodeGetContent(node); | |
1077 | if (!*control_uri) { | |
1078 | break; | |
1079 | } | |
1080 | } else { | |
1081 | /* data_uri */ | |
1082 | *data_uri = (char *) xmlNodeGetContent(node); | |
1083 | if (!*data_uri) { | |
1084 | break; | |
1085 | } | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1090 | } | |
1091 | ||
1092 | static | |
1093 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1094 | struct consumer_output *output) | |
1095 | { | |
1096 | int ret; | |
1097 | xmlNodePtr node; | |
1098 | ||
a0377dfe | 1099 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1100 | |
1101 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1102 | node = xmlNextElementSibling(node)) { | |
1103 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1104 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1105 | ||
1106 | /* enabled */ | |
1107 | if (!enabled_str) { | |
1108 | ret = -LTTNG_ERR_NOMEM; | |
1109 | goto end; | |
1110 | } | |
1111 | ||
1112 | ret = parse_bool(enabled_str, &output->enabled); | |
1113 | free(enabled_str); | |
1114 | if (ret) { | |
1115 | goto end; | |
1116 | } | |
1117 | } else { | |
1118 | xmlNodePtr output_type_node; | |
1119 | ||
1120 | /* destination */ | |
1121 | output_type_node = xmlFirstElementChild(node); | |
1122 | if (!output_type_node) { | |
1123 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1124 | goto end; | |
1125 | } | |
1126 | ||
1127 | if (!strcmp((const char *) output_type_node->name, | |
1128 | config_element_path)) { | |
1129 | /* path */ | |
1130 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1131 | if (!output->path) { | |
1132 | ret = -LTTNG_ERR_NOMEM; | |
1133 | goto end; | |
1134 | } | |
1135 | } else { | |
1136 | /* net_output */ | |
1137 | ret = get_net_output_uris(output_type_node, | |
1138 | &output->control_uri, &output->data_uri); | |
1139 | if (ret) { | |
1140 | goto end; | |
1141 | } | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | ret = 0; | |
1146 | ||
1147 | end: | |
1148 | if (ret) { | |
1149 | free(output->path); | |
1150 | free(output->control_uri); | |
1151 | free(output->data_uri); | |
1152 | memset(output, 0, sizeof(struct consumer_output)); | |
1153 | } | |
1154 | return ret; | |
1155 | } | |
1156 | ||
dcf266c0 | 1157 | static |
1b08cbce JR |
1158 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1159 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1160 | { |
1161 | int ret; | |
671f3c59 | 1162 | enum lttng_error_code ret_code; |
dcf266c0 JG |
1163 | xmlNodePtr node = NULL; |
1164 | xmlNodePtr snapshot_output_list_node; | |
1165 | xmlNodePtr snapshot_output_node; | |
671f3c59 | 1166 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1167 | |
a0377dfe | 1168 | LTTNG_ASSERT(session_name); |
671f3c59 | 1169 | LTTNG_ASSERT(output_node); |
dcf266c0 | 1170 | |
671f3c59 JR |
1171 | /* |
1172 | * Use a descriptor without output since consumer output size is not | |
1173 | * exposed by the session descriptor api. | |
1174 | */ | |
1175 | session_descriptor = lttng_session_descriptor_snapshot_create(session_name); | |
1176 | if (session_descriptor == nullptr) { | |
1177 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
1178 | goto end; |
1179 | } | |
1180 | ||
671f3c59 JR |
1181 | ret_code = lttng_create_session_ext(session_descriptor); |
1182 | if (ret_code != LTTNG_OK) { | |
1183 | ret = -ret_code; | |
dcf266c0 JG |
1184 | goto end; |
1185 | } | |
1186 | ||
1187 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1188 | ||
1189 | /* Parse and create snapshot outputs */ | |
dcf266c0 JG |
1190 | for (snapshot_output_node = |
1191 | xmlFirstElementChild(snapshot_output_list_node); | |
1192 | snapshot_output_node; snapshot_output_node = | |
1193 | xmlNextElementSibling(snapshot_output_node)) { | |
1194 | char *name = NULL; | |
1195 | uint64_t max_size = UINT64_MAX; | |
1c9a0b0e | 1196 | struct consumer_output output = {}; |
dcf266c0 | 1197 | struct lttng_snapshot_output *snapshot_output = NULL; |
1b08cbce JR |
1198 | const char *control_uri = NULL; |
1199 | const char *data_uri = NULL; | |
1200 | const char *path = NULL; | |
dcf266c0 JG |
1201 | |
1202 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1203 | node = xmlNextElementSibling(node)) { | |
1204 | if (!strcmp((const char *) node->name, | |
1205 | config_element_name)) { | |
1206 | /* name */ | |
1207 | name = (char *) xmlNodeGetContent(node); | |
1208 | if (!name) { | |
1209 | ret = -LTTNG_ERR_NOMEM; | |
1210 | goto error_snapshot_output; | |
1211 | } | |
1212 | } else if (!strcmp((const char *) node->name, | |
1213 | config_element_max_size)) { | |
1214 | xmlChar *content = xmlNodeGetContent(node); | |
1215 | ||
1216 | /* max_size */ | |
1217 | if (!content) { | |
1218 | ret = -LTTNG_ERR_NOMEM; | |
1219 | goto error_snapshot_output; | |
1220 | } | |
1221 | ret = parse_uint(content, &max_size); | |
1222 | free(content); | |
1223 | if (ret) { | |
1224 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1225 | goto error_snapshot_output; | |
1226 | } | |
1227 | } else { | |
1228 | /* consumer_output */ | |
1229 | ret = process_consumer_output(node, &output); | |
1230 | if (ret) { | |
1231 | goto error_snapshot_output; | |
1232 | } | |
1233 | } | |
1234 | } | |
1235 | ||
21a3f144 JR |
1236 | control_uri = output.control_uri; |
1237 | data_uri = output.data_uri; | |
1238 | path = output.path; | |
1239 | ||
1b08cbce JR |
1240 | if (overrides) { |
1241 | if (overrides->path_url) { | |
1b08cbce | 1242 | path = overrides->path_url; |
21a3f144 JR |
1243 | /* Control/data_uri are null */ |
1244 | control_uri = NULL; | |
1245 | data_uri = NULL; | |
1b08cbce JR |
1246 | } else { |
1247 | if (overrides->ctrl_url) { | |
1b08cbce | 1248 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1249 | /* path is null */ |
1250 | path = NULL; | |
1b08cbce JR |
1251 | } |
1252 | if (overrides->data_url) { | |
1b08cbce | 1253 | data_uri = overrides->data_url; |
21a3f144 JR |
1254 | /* path is null */ |
1255 | path = NULL; | |
1b08cbce JR |
1256 | } |
1257 | } | |
1b08cbce JR |
1258 | } |
1259 | ||
dcf266c0 JG |
1260 | snapshot_output = lttng_snapshot_output_create(); |
1261 | if (!snapshot_output) { | |
1262 | ret = -LTTNG_ERR_NOMEM; | |
1263 | goto error_snapshot_output; | |
1264 | } | |
1265 | ||
1266 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1267 | if (ret) { | |
1268 | goto error_snapshot_output; | |
1269 | } | |
1270 | ||
1271 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1272 | if (ret) { | |
1273 | goto error_snapshot_output; | |
1274 | } | |
1275 | ||
1b08cbce JR |
1276 | if (path) { |
1277 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1278 | snapshot_output); |
1279 | if (ret) { | |
1280 | goto error_snapshot_output; | |
1281 | } | |
1282 | } else { | |
1b08cbce JR |
1283 | if (control_uri) { |
1284 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1285 | snapshot_output); |
1286 | if (ret) { | |
1287 | goto error_snapshot_output; | |
1288 | } | |
1289 | } | |
1290 | ||
1b08cbce JR |
1291 | if (data_uri) { |
1292 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1293 | snapshot_output); |
1294 | if (ret) { | |
1295 | goto error_snapshot_output; | |
1296 | } | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1301 | error_snapshot_output: | |
1302 | free(name); | |
1303 | free(output.path); | |
1304 | free(output.control_uri); | |
1305 | free(output.data_uri); | |
1306 | lttng_snapshot_output_destroy(snapshot_output); | |
1307 | if (ret) { | |
1308 | goto end; | |
1309 | } | |
1310 | } | |
1311 | end: | |
671f3c59 | 1312 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1313 | return ret; |
1314 | } | |
1315 | ||
1316 | static | |
1317 | int create_session(const char *name, | |
dcf266c0 | 1318 | xmlNodePtr output_node, |
1b08cbce JR |
1319 | uint64_t live_timer_interval, |
1320 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 | 1321 | { |
671f3c59 JR |
1322 | int ret = 0; |
1323 | enum lttng_error_code ret_code; | |
1c9a0b0e | 1324 | struct consumer_output output = {}; |
dcf266c0 | 1325 | xmlNodePtr consumer_output_node; |
1b08cbce JR |
1326 | const char *control_uri = NULL; |
1327 | const char *data_uri = NULL; | |
1328 | const char *path = NULL; | |
671f3c59 | 1329 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1330 | |
a0377dfe | 1331 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1332 | |
1333 | if (output_node) { | |
1334 | consumer_output_node = xmlFirstElementChild(output_node); | |
1335 | if (!consumer_output_node) { | |
1336 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1337 | goto end; | |
1338 | } | |
1339 | ||
1340 | if (strcmp((const char *) consumer_output_node->name, | |
1341 | config_element_consumer_output)) { | |
1342 | WARN("Invalid output type, expected %s node", | |
1343 | config_element_consumer_output); | |
1344 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1345 | goto end; | |
1346 | } | |
1347 | ||
1348 | ret = process_consumer_output(consumer_output_node, &output); | |
1349 | if (ret) { | |
1350 | goto end; | |
1351 | } | |
1352 | } | |
1353 | ||
21a3f144 JR |
1354 | control_uri = output.control_uri; |
1355 | data_uri = output.data_uri; | |
1356 | path = output.path; | |
1357 | ||
1b08cbce JR |
1358 | /* Check for override and apply them */ |
1359 | if (overrides) { | |
1360 | if (overrides->path_url) { | |
1b08cbce | 1361 | path = overrides->path_url; |
21a3f144 JR |
1362 | /* control/data_uri are null */; |
1363 | control_uri = NULL; | |
1364 | data_uri = NULL; | |
1b08cbce JR |
1365 | } else { |
1366 | if (overrides->ctrl_url) { | |
1b08cbce | 1367 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1368 | /* path is null */ |
1369 | path = NULL; | |
1b08cbce JR |
1370 | } |
1371 | if (overrides->data_url) { | |
1b08cbce | 1372 | data_uri = overrides->data_url; |
21a3f144 JR |
1373 | /* path is null */ |
1374 | path = NULL; | |
1b08cbce JR |
1375 | } |
1376 | } | |
1b08cbce JR |
1377 | } |
1378 | ||
1379 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { | |
dcf266c0 JG |
1380 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1381 | goto end; | |
1382 | } | |
1383 | ||
1b08cbce | 1384 | if (control_uri || data_uri) { |
dcf266c0 JG |
1385 | /* network destination */ |
1386 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1387 | /* |
1388 | * URLs are provided for sure since the test above make sure that | |
1389 | * with a live timer the data and control URIs are provided. So, | |
1390 | * NULL is passed here and will be set right after. | |
1391 | */ | |
671f3c59 JR |
1392 | session_descriptor = lttng_session_descriptor_live_network_create( |
1393 | name, control_uri, data_uri, live_timer_interval); | |
dcf266c0 | 1394 | } else { |
671f3c59 JR |
1395 | session_descriptor = lttng_session_descriptor_network_create( |
1396 | name, control_uri, data_uri); | |
dcf266c0 | 1397 | } |
95681498 | 1398 | |
671f3c59 JR |
1399 | } else if (path != nullptr) { |
1400 | session_descriptor = lttng_session_descriptor_local_create(name, path); | |
dcf266c0 | 1401 | } else { |
671f3c59 JR |
1402 | /* No output */ |
1403 | session_descriptor = lttng_session_descriptor_create(name); | |
1404 | } | |
1405 | ||
1406 | if (session_descriptor == nullptr) { | |
1407 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1408 | goto end; | |
dcf266c0 | 1409 | } |
671f3c59 JR |
1410 | |
1411 | ret_code = lttng_create_session_ext(session_descriptor); | |
1412 | if (ret_code != LTTNG_OK) { | |
1413 | ret = -ret_code; | |
1414 | goto end; | |
1415 | } | |
1416 | ||
dcf266c0 JG |
1417 | end: |
1418 | free(output.path); | |
1419 | free(output.control_uri); | |
1420 | free(output.data_uri); | |
671f3c59 | 1421 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1422 | return ret; |
1423 | } | |
c1e83fb4 FD |
1424 | |
1425 | static | |
1426 | struct lttng_userspace_probe_location * | |
1427 | process_userspace_probe_function_attribute_node( | |
1428 | xmlNodePtr attribute_node) | |
1429 | { | |
c1e83fb4 | 1430 | xmlNodePtr function_attribute_node; |
717d2dba | 1431 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1432 | struct lttng_userspace_probe_location *location = NULL; |
1433 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1434 | ||
1435 | /* | |
1436 | * Process userspace probe location function 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 | */ | |
1441 | for (function_attribute_node = | |
1442 | xmlFirstElementChild(attribute_node); | |
1443 | function_attribute_node; | |
1444 | function_attribute_node = xmlNextElementSibling( | |
1445 | function_attribute_node)) { | |
1446 | /* Handle function name, binary path and lookup method. */ | |
1447 | if (!strcmp((const char *) function_attribute_node->name, | |
1448 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1449 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1450 | if (!function_name) { |
c1e83fb4 FD |
1451 | goto error; |
1452 | } | |
1453 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1454 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1455 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1456 | if (!binary_path) { |
c1e83fb4 FD |
1457 | goto error; |
1458 | } | |
1459 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1460 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1461 | char *lookup_method_name; |
c1e83fb4 | 1462 | |
717d2dba JG |
1463 | lookup_method_name = (char *) xmlNodeGetContent( |
1464 | function_attribute_node); | |
c1e83fb4 | 1465 | if (!lookup_method_name) { |
c1e83fb4 FD |
1466 | goto error; |
1467 | } | |
1468 | ||
1469 | /* | |
1470 | * function_default lookup method defaults to | |
1471 | * function_elf lookup method at the moment. | |
1472 | */ | |
1473 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1474 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1475 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1476 | if (!lookup_method) { | |
1477 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1478 | } |
1479 | } else { | |
717d2dba JG |
1480 | WARN("Unknown function lookup method"); |
1481 | } | |
1482 | ||
1483 | free(lookup_method_name); | |
1484 | if (!lookup_method) { | |
c1e83fb4 FD |
1485 | goto error; |
1486 | } | |
1487 | } else { | |
1488 | goto error; | |
1489 | } | |
1490 | ||
1491 | /* Check if all the necessary fields were found. */ | |
1492 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1493 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1494 | location = |
1495 | lttng_userspace_probe_location_function_create( | |
1496 | binary_path, function_name, | |
1497 | lookup_method); | |
717d2dba JG |
1498 | lookup_method = NULL; |
1499 | goto error; | |
c1e83fb4 FD |
1500 | } |
1501 | } | |
1502 | error: | |
717d2dba | 1503 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1504 | free(binary_path); |
1505 | free(function_name); | |
c1e83fb4 FD |
1506 | return location; |
1507 | } | |
1508 | ||
1509 | static | |
1510 | struct lttng_userspace_probe_location * | |
1511 | process_userspace_probe_tracepoint_attribute_node( | |
1512 | xmlNodePtr attribute_node) | |
1513 | { | |
c1e83fb4 | 1514 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1515 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1516 | struct lttng_userspace_probe_location *location = NULL; | |
1517 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1518 | ||
1519 | /* | |
1520 | * Process userspace probe location tracepoint attributes. The order of | |
1521 | * the fields are not guaranteed so we need to iterate over all fields | |
1522 | * and check at the end if everything we need for this location type is | |
1523 | * there. | |
1524 | */ | |
1525 | for (tracepoint_attribute_node = | |
1526 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1527 | tracepoint_attribute_node = xmlNextElementSibling( | |
1528 | tracepoint_attribute_node)) { | |
1529 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1530 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1531 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1532 | if (!probe_name) { |
c1e83fb4 FD |
1533 | goto error; |
1534 | } | |
1535 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1536 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1537 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1538 | if (!provider_name) { |
c1e83fb4 FD |
1539 | goto error; |
1540 | } | |
1541 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1542 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1543 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1544 | if (!binary_path) { |
c1e83fb4 FD |
1545 | goto error; |
1546 | } | |
1547 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1548 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1549 | char *lookup_method_name; |
c1e83fb4 | 1550 | |
717d2dba JG |
1551 | lookup_method_name = (char *) xmlNodeGetContent( |
1552 | tracepoint_attribute_node); | |
c1e83fb4 | 1553 | if (!lookup_method_name) { |
c1e83fb4 FD |
1554 | goto error; |
1555 | } | |
1556 | ||
1557 | if (!strcmp(lookup_method_name, | |
1558 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1559 | lookup_method = | |
1560 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1561 | if (!lookup_method) { | |
1562 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1563 | } |
1564 | } else { | |
717d2dba JG |
1565 | WARN("Unknown tracepoint lookup method"); |
1566 | } | |
1567 | ||
1568 | free(lookup_method_name); | |
1569 | if (!lookup_method) { | |
c1e83fb4 FD |
1570 | goto error; |
1571 | } | |
1572 | } else { | |
717d2dba | 1573 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1574 | goto error; |
1575 | } | |
1576 | ||
1577 | /* Check if all the necessary fields were found. */ | |
1578 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1579 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1580 | location = |
1581 | lttng_userspace_probe_location_tracepoint_create( | |
1582 | binary_path, provider_name, | |
1583 | probe_name, lookup_method); | |
6bd61b96 | 1584 | lookup_method = NULL; |
717d2dba | 1585 | goto error; |
c1e83fb4 FD |
1586 | } |
1587 | } | |
1588 | error: | |
717d2dba | 1589 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1590 | free(binary_path); |
c1e83fb4 | 1591 | free(provider_name); |
717d2dba | 1592 | free(probe_name); |
c1e83fb4 FD |
1593 | return location; |
1594 | } | |
1595 | ||
dcf266c0 JG |
1596 | static |
1597 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1598 | struct lttng_event_probe_attr *attr) | |
1599 | { | |
1600 | int ret; | |
1601 | ||
a0377dfe FD |
1602 | LTTNG_ASSERT(probe_attribute_node); |
1603 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1604 | |
1605 | if (!strcmp((const char *) probe_attribute_node->name, | |
1606 | config_element_address)) { | |
1607 | xmlChar *content; | |
1608 | uint64_t addr = 0; | |
1609 | ||
1610 | /* addr */ | |
1611 | content = xmlNodeGetContent(probe_attribute_node); | |
1612 | if (!content) { | |
1613 | ret = -LTTNG_ERR_NOMEM; | |
1614 | goto end; | |
1615 | } | |
1616 | ||
1617 | ret = parse_uint(content, &addr); | |
1618 | free(content); | |
1619 | if (ret) { | |
1620 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1621 | goto end; | |
1622 | } | |
1623 | ||
1624 | attr->addr = addr; | |
1625 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1626 | config_element_offset)) { | |
1627 | xmlChar *content; | |
1628 | uint64_t offset = 0; | |
1629 | ||
1630 | /* offset */ | |
1631 | content = xmlNodeGetContent(probe_attribute_node); | |
1632 | if (!content) { | |
1633 | ret = -LTTNG_ERR_NOMEM; | |
1634 | goto end; | |
1635 | } | |
1636 | ||
1637 | ret = parse_uint(content, &offset); | |
1638 | free(content); | |
1639 | if (ret) { | |
1640 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1641 | goto end; | |
1642 | } | |
1643 | ||
1644 | attr->offset = offset; | |
1645 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1646 | config_element_symbol_name)) { | |
1647 | xmlChar *content; | |
dcf266c0 JG |
1648 | |
1649 | /* symbol_name */ | |
1650 | content = xmlNodeGetContent(probe_attribute_node); | |
1651 | if (!content) { | |
1652 | ret = -LTTNG_ERR_NOMEM; | |
1653 | goto end; | |
1654 | } | |
1655 | ||
d2e67842 JG |
1656 | ret = lttng_strncpy(attr->symbol_name, |
1657 | (const char *) content, | |
1658 | LTTNG_SYMBOL_NAME_LEN); | |
1659 | if (ret == -1) { | |
1660 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1661 | (const char *) content, | |
1662 | strlen((const char *) content), | |
1663 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1664 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1665 | free(content); | |
1666 | goto end; | |
1667 | } | |
dcf266c0 JG |
1668 | free(content); |
1669 | } | |
1670 | ret = 0; | |
1671 | end: | |
1672 | return ret; | |
1673 | } | |
1674 | ||
1675 | static | |
1676 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1677 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1678 | { |
d7b645e2 | 1679 | int ret = 0, i; |
dcf266c0 | 1680 | xmlNodePtr node; |
91744e14 | 1681 | struct lttng_event *event; |
dcf266c0 JG |
1682 | char **exclusions = NULL; |
1683 | unsigned long exclusion_count = 0; | |
1684 | char *filter_expression = NULL; | |
1685 | ||
a0377dfe FD |
1686 | LTTNG_ASSERT(event_node); |
1687 | LTTNG_ASSERT(handle); | |
1688 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1689 | |
91744e14 FD |
1690 | event = lttng_event_create(); |
1691 | if (!event) { | |
1692 | ret = -LTTNG_ERR_NOMEM; | |
1693 | goto end; | |
1694 | } | |
dcf266c0 | 1695 | |
f40eba3d JG |
1696 | /* Initialize default log level which varies by domain */ |
1697 | switch (handle->domain.type) | |
1698 | { | |
1699 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1700 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1701 | break; |
1702 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1703 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1704 | break; |
1705 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1706 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1707 | break; |
1708 | case LTTNG_DOMAIN_UST: | |
1709 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1710 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1711 | break; |
1712 | default: | |
a0377dfe | 1713 | abort(); |
f40eba3d JG |
1714 | } |
1715 | ||
dcf266c0 JG |
1716 | for (node = xmlFirstElementChild(event_node); node; |
1717 | node = xmlNextElementSibling(node)) { | |
1718 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1719 | xmlChar *content; | |
dcf266c0 JG |
1720 | |
1721 | /* name */ | |
1722 | content = xmlNodeGetContent(node); | |
1723 | if (!content) { | |
1724 | ret = -LTTNG_ERR_NOMEM; | |
1725 | goto end; | |
1726 | } | |
1727 | ||
91744e14 | 1728 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1729 | (const char *) content, |
1730 | LTTNG_SYMBOL_NAME_LEN); | |
1731 | if (ret == -1) { | |
1732 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1733 | (const char *) content, | |
1734 | strlen((const char *) content), | |
1735 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1736 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1737 | free(content); | |
1738 | goto end; | |
1739 | } | |
dcf266c0 JG |
1740 | free(content); |
1741 | } else if (!strcmp((const char *) node->name, | |
1742 | config_element_enabled)) { | |
1743 | xmlChar *content = xmlNodeGetContent(node); | |
1744 | ||
1745 | /* enabled */ | |
1746 | if (!content) { | |
1747 | ret = -LTTNG_ERR_NOMEM; | |
1748 | goto end; | |
1749 | } | |
1750 | ||
91744e14 | 1751 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1752 | free(content); |
1753 | if (ret) { | |
1754 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1755 | goto end; | |
1756 | } | |
1757 | } else if (!strcmp((const char *) node->name, | |
1758 | config_element_type)) { | |
1759 | xmlChar *content = xmlNodeGetContent(node); | |
1760 | ||
1761 | /* type */ | |
1762 | if (!content) { | |
1763 | ret = -LTTNG_ERR_NOMEM; | |
1764 | goto end; | |
1765 | } | |
1766 | ||
1767 | ret = get_event_type(content); | |
1768 | free(content); | |
1769 | if (ret < 0) { | |
1770 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1771 | goto end; | |
1772 | } | |
1773 | ||
3afa94ae | 1774 | event->type = (lttng_event_type) ret; |
dcf266c0 JG |
1775 | } else if (!strcmp((const char *) node->name, |
1776 | config_element_loglevel_type)) { | |
1777 | xmlChar *content = xmlNodeGetContent(node); | |
1778 | ||
1779 | /* loglevel_type */ | |
1780 | if (!content) { | |
1781 | ret = -LTTNG_ERR_NOMEM; | |
1782 | goto end; | |
1783 | } | |
1784 | ||
1785 | ret = get_loglevel_type(content); | |
1786 | free(content); | |
1787 | if (ret < 0) { | |
1788 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1789 | goto end; | |
1790 | } | |
1791 | ||
3afa94ae | 1792 | event->loglevel_type = (lttng_loglevel_type) ret; |
dcf266c0 JG |
1793 | } else if (!strcmp((const char *) node->name, |
1794 | config_element_loglevel)) { | |
1795 | xmlChar *content; | |
1796 | int64_t loglevel = 0; | |
1797 | ||
1798 | /* loglevel */ | |
1799 | content = xmlNodeGetContent(node); | |
1800 | if (!content) { | |
1801 | ret = -LTTNG_ERR_NOMEM; | |
1802 | goto end; | |
1803 | } | |
1804 | ||
1805 | ret = parse_int(content, &loglevel); | |
1806 | free(content); | |
1807 | if (ret) { | |
1808 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1809 | goto end; | |
1810 | } | |
1811 | ||
1812 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1813 | WARN("loglevel out of range."); | |
1814 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1815 | goto end; | |
1816 | } | |
1817 | ||
91744e14 | 1818 | event->loglevel = loglevel; |
dcf266c0 JG |
1819 | } else if (!strcmp((const char *) node->name, |
1820 | config_element_filter)) { | |
1821 | xmlChar *content = | |
1822 | xmlNodeGetContent(node); | |
1823 | ||
1824 | /* filter */ | |
1825 | if (!content) { | |
1826 | ret = -LTTNG_ERR_NOMEM; | |
1827 | goto end; | |
1828 | } | |
1829 | ||
02d8ac3d | 1830 | free(filter_expression); |
dcf266c0 JG |
1831 | filter_expression = strdup((char *) content); |
1832 | free(content); | |
1833 | if (!filter_expression) { | |
1834 | ret = -LTTNG_ERR_NOMEM; | |
1835 | goto end; | |
1836 | } | |
1837 | } else if (!strcmp((const char *) node->name, | |
1838 | config_element_exclusions)) { | |
1839 | xmlNodePtr exclusion_node; | |
1840 | int exclusion_index = 0; | |
1841 | ||
1842 | /* exclusions */ | |
1843 | if (exclusions) { | |
1844 | /* | |
1845 | * Exclusions has already been initialized, | |
1846 | * invalid file. | |
1847 | */ | |
1848 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1849 | goto end; | |
1850 | } | |
1851 | ||
1852 | exclusion_count = xmlChildElementCount(node); | |
1853 | if (!exclusion_count) { | |
1854 | continue; | |
1855 | } | |
1856 | ||
64803277 | 1857 | exclusions = calloc<char *>(exclusion_count); |
dcf266c0 JG |
1858 | if (!exclusions) { |
1859 | exclusion_count = 0; | |
1860 | ret = -LTTNG_ERR_NOMEM; | |
1861 | goto end; | |
1862 | } | |
1863 | ||
1864 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1865 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1866 | xmlChar *content = | |
1867 | xmlNodeGetContent(exclusion_node); | |
1868 | ||
1869 | if (!content) { | |
1870 | ret = -LTTNG_ERR_NOMEM; | |
1871 | goto end; | |
1872 | } | |
1873 | ||
1874 | exclusions[exclusion_index] = strdup((const char *) content); | |
1875 | free(content); | |
1876 | if (!exclusions[exclusion_index]) { | |
1877 | ret = -LTTNG_ERR_NOMEM; | |
1878 | goto end; | |
1879 | } | |
1880 | exclusion_index++; | |
1881 | } | |
1882 | ||
91744e14 | 1883 | event->exclusion = 1; |
dcf266c0 JG |
1884 | } else if (!strcmp((const char *) node->name, |
1885 | config_element_attributes)) { | |
1886 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1887 | ||
1888 | /* attributes */ | |
1889 | if (!attribute_node) { | |
1890 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1891 | goto end; | |
1892 | } | |
1893 | ||
c1e83fb4 | 1894 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
1895 | config_element_probe_attributes)) { |
1896 | xmlNodePtr probe_attribute_node; | |
1897 | ||
1898 | /* probe_attributes */ | |
1899 | for (probe_attribute_node = | |
1900 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1901 | probe_attribute_node = xmlNextElementSibling( | |
1902 | probe_attribute_node)) { | |
1903 | ||
1904 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 1905 | &event->attr.probe); |
dcf266c0 JG |
1906 | if (ret) { |
1907 | goto end; | |
1908 | } | |
1909 | } | |
c1e83fb4 FD |
1910 | } else if (!strcmp((const char *) attribute_node->name, |
1911 | config_element_function_attributes)) { | |
dcf266c0 JG |
1912 | size_t sym_len; |
1913 | xmlChar *content; | |
1914 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1915 | ||
1916 | /* function_attributes */ | |
1917 | content = xmlNodeGetContent(symbol_node); | |
1918 | if (!content) { | |
1919 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1920 | goto end; | |
1921 | } | |
1922 | ||
1923 | sym_len = strlen((char *) content); | |
1924 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1925 | WARN("Function name too long."); | |
1926 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1927 | free(content); | |
1928 | goto end; | |
1929 | } | |
1930 | ||
d2e67842 | 1931 | ret = lttng_strncpy( |
91744e14 | 1932 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
1933 | (char *) content, sym_len); |
1934 | if (ret == -1) { | |
1935 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1936 | free(content); | |
1937 | goto end; | |
1938 | } | |
dcf266c0 | 1939 | free(content); |
c1e83fb4 FD |
1940 | } else if (!strcmp((const char *) attribute_node->name, |
1941 | config_element_userspace_probe_tracepoint_attributes)) { | |
1942 | struct lttng_userspace_probe_location *location; | |
1943 | ||
1944 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
1945 | if (!location) { | |
1946 | WARN("Error processing userspace probe tracepoint attribute"); | |
1947 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1948 | goto end; | |
1949 | } | |
1950 | ret = lttng_event_set_userspace_probe_location( | |
1951 | event, location); | |
1952 | if (ret) { | |
1953 | WARN("Error setting userspace probe location field"); | |
1954 | lttng_userspace_probe_location_destroy( | |
1955 | location); | |
1956 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1957 | goto end; | |
1958 | } | |
1959 | } else if (!strcmp((const char *) attribute_node->name, | |
1960 | config_element_userspace_probe_function_attributes)) { | |
1961 | struct lttng_userspace_probe_location *location; | |
1962 | ||
1963 | location = | |
1964 | process_userspace_probe_function_attribute_node( | |
1965 | attribute_node); | |
1966 | if (!location) { | |
1967 | WARN("Error processing userspace probe function attribute"); | |
1968 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1969 | goto end; | |
1970 | } | |
1971 | ||
1972 | ret = lttng_event_set_userspace_probe_location( | |
1973 | event, location); | |
1974 | if (ret) { | |
1975 | WARN("Error setting userspace probe location field"); | |
1976 | lttng_userspace_probe_location_destroy( | |
1977 | location); | |
1978 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1979 | goto end; | |
1980 | } | |
1981 | } else { | |
1982 | /* Unknown event attribute. */ | |
1983 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1984 | goto end; | |
dcf266c0 JG |
1985 | } |
1986 | } | |
1987 | } | |
1988 | ||
91744e14 FD |
1989 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
1990 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
1991 | filter_expression, exclusion_count, exclusions); |
1992 | if (ret < 0) { | |
91744e14 | 1993 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
1994 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1995 | goto end; | |
1996 | } | |
065321e9 | 1997 | } |
d2e67842 | 1998 | ret = 0; |
dcf266c0 JG |
1999 | end: |
2000 | for (i = 0; i < exclusion_count; i++) { | |
2001 | free(exclusions[i]); | |
2002 | } | |
2003 | ||
b33f872b | 2004 | lttng_event_destroy(event); |
dcf266c0 JG |
2005 | free(exclusions); |
2006 | free(filter_expression); | |
2007 | return ret; | |
2008 | } | |
2009 | ||
2010 | static | |
2011 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2012 | const char *channel_name) | |
2013 | { | |
2014 | int ret = 0; | |
d7b645e2 | 2015 | struct lttng_event event; |
dcf266c0 JG |
2016 | xmlNodePtr node; |
2017 | ||
a0377dfe FD |
2018 | LTTNG_ASSERT(events_node); |
2019 | LTTNG_ASSERT(handle); | |
2020 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2021 | |
2022 | for (node = xmlFirstElementChild(events_node); node; | |
2023 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2024 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2025 | if (ret) { |
2026 | goto end; | |
2027 | } | |
2028 | } | |
d7b645e2 JR |
2029 | |
2030 | /* | |
2031 | * Disable all events to enable only the necessary events. | |
2032 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2033 | * force this approach. | |
2034 | */ | |
2035 | memset(&event, 0, sizeof(event)); | |
2036 | event.loglevel = -1; | |
2037 | event.type = LTTNG_EVENT_ALL; | |
2038 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2039 | if (ret) { | |
2040 | goto end; | |
2041 | } | |
2042 | ||
2043 | for (node = xmlFirstElementChild(events_node); node; | |
2044 | node = xmlNextElementSibling(node)) { | |
2045 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2046 | if (ret) { | |
2047 | goto end; | |
2048 | } | |
2049 | } | |
2050 | ||
dcf266c0 JG |
2051 | end: |
2052 | return ret; | |
2053 | } | |
2054 | ||
2055 | static | |
2056 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2057 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2058 | xmlNodePtr *events_node) | |
2059 | { | |
2060 | int ret; | |
2061 | ||
a0377dfe FD |
2062 | LTTNG_ASSERT(attr_node); |
2063 | LTTNG_ASSERT(channel); | |
2064 | LTTNG_ASSERT(contexts_node); | |
2065 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2066 | |
2067 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2068 | xmlChar *content; | |
dcf266c0 JG |
2069 | |
2070 | /* name */ | |
2071 | content = xmlNodeGetContent(attr_node); | |
2072 | if (!content) { | |
2073 | ret = -LTTNG_ERR_NOMEM; | |
2074 | goto end; | |
2075 | } | |
2076 | ||
d2e67842 JG |
2077 | ret = lttng_strncpy(channel->name, |
2078 | (const char *) content, | |
2079 | LTTNG_SYMBOL_NAME_LEN); | |
2080 | if (ret == -1) { | |
2081 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2082 | (const char *) content, | |
2083 | strlen((const char *) content), | |
2084 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2085 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2086 | free(content); | |
2087 | goto end; | |
2088 | } | |
dcf266c0 JG |
2089 | free(content); |
2090 | } else if (!strcmp((const char *) attr_node->name, | |
2091 | config_element_enabled)) { | |
2092 | xmlChar *content; | |
2093 | int enabled; | |
2094 | ||
2095 | /* enabled */ | |
2096 | content = xmlNodeGetContent(attr_node); | |
2097 | if (!content) { | |
2098 | ret = -LTTNG_ERR_NOMEM; | |
2099 | goto end; | |
2100 | } | |
2101 | ||
2102 | ret = parse_bool(content, &enabled); | |
2103 | free(content); | |
2104 | if (ret) { | |
2105 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2106 | goto end; | |
2107 | } | |
2108 | ||
2109 | channel->enabled = enabled; | |
2110 | } else if (!strcmp((const char *) attr_node->name, | |
2111 | config_element_overwrite_mode)) { | |
2112 | xmlChar *content; | |
2113 | ||
2114 | /* overwrite_mode */ | |
2115 | content = xmlNodeGetContent(attr_node); | |
2116 | if (!content) { | |
2117 | ret = -LTTNG_ERR_NOMEM; | |
2118 | goto end; | |
2119 | } | |
2120 | ||
2121 | ret = get_overwrite_mode(content); | |
2122 | free(content); | |
2123 | if (ret < 0) { | |
2124 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2125 | goto end; | |
2126 | } | |
2127 | ||
2128 | channel->attr.overwrite = ret; | |
2129 | } else if (!strcmp((const char *) attr_node->name, | |
2130 | config_element_subbuf_size)) { | |
2131 | xmlChar *content; | |
2132 | ||
2133 | /* subbuffer_size */ | |
2134 | content = xmlNodeGetContent(attr_node); | |
2135 | if (!content) { | |
2136 | ret = -LTTNG_ERR_NOMEM; | |
2137 | goto end; | |
2138 | } | |
2139 | ||
2140 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2141 | free(content); | |
2142 | if (ret) { | |
2143 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2144 | goto end; | |
2145 | } | |
2146 | } else if (!strcmp((const char *) attr_node->name, | |
2147 | config_element_num_subbuf)) { | |
2148 | xmlChar *content; | |
2149 | ||
2150 | /* subbuffer_count */ | |
2151 | content = xmlNodeGetContent(attr_node); | |
2152 | if (!content) { | |
2153 | ret = -LTTNG_ERR_NOMEM; | |
2154 | goto end; | |
2155 | } | |
2156 | ||
2157 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2158 | free(content); | |
2159 | if (ret) { | |
2160 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2161 | goto end; | |
2162 | } | |
2163 | } else if (!strcmp((const char *) attr_node->name, | |
2164 | config_element_switch_timer_interval)) { | |
2165 | xmlChar *content; | |
2166 | uint64_t switch_timer_interval = 0; | |
2167 | ||
2168 | /* switch_timer_interval */ | |
2169 | content = xmlNodeGetContent(attr_node); | |
2170 | if (!content) { | |
2171 | ret = -LTTNG_ERR_NOMEM; | |
2172 | goto end; | |
2173 | } | |
2174 | ||
2175 | ret = parse_uint(content, &switch_timer_interval); | |
2176 | free(content); | |
2177 | if (ret) { | |
2178 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2179 | goto end; | |
2180 | } | |
2181 | ||
2182 | if (switch_timer_interval > UINT_MAX) { | |
2183 | WARN("switch_timer_interval out of range."); | |
2184 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2185 | goto end; | |
2186 | } | |
2187 | ||
2188 | channel->attr.switch_timer_interval = | |
2189 | switch_timer_interval; | |
2190 | } else if (!strcmp((const char *) attr_node->name, | |
2191 | config_element_read_timer_interval)) { | |
2192 | xmlChar *content; | |
2193 | uint64_t read_timer_interval = 0; | |
2194 | ||
2195 | /* read_timer_interval */ | |
2196 | content = xmlNodeGetContent(attr_node); | |
2197 | if (!content) { | |
2198 | ret = -LTTNG_ERR_NOMEM; | |
2199 | goto end; | |
2200 | } | |
2201 | ||
2202 | ret = parse_uint(content, &read_timer_interval); | |
2203 | free(content); | |
2204 | if (ret) { | |
2205 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
2209 | if (read_timer_interval > UINT_MAX) { | |
2210 | WARN("read_timer_interval out of range."); | |
2211 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2212 | goto end; | |
2213 | } | |
2214 | ||
2215 | channel->attr.read_timer_interval = | |
2216 | read_timer_interval; | |
2217 | } else if (!strcmp((const char *) attr_node->name, | |
2218 | config_element_output_type)) { | |
2219 | xmlChar *content; | |
2220 | ||
2221 | /* output_type */ | |
2222 | content = xmlNodeGetContent(attr_node); | |
2223 | if (!content) { | |
2224 | ret = -LTTNG_ERR_NOMEM; | |
2225 | goto end; | |
2226 | } | |
2227 | ||
2228 | ret = get_output_type(content); | |
2229 | free(content); | |
2230 | if (ret < 0) { | |
2231 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2232 | goto end; | |
2233 | } | |
2234 | ||
3afa94ae | 2235 | channel->attr.output = (lttng_event_output) ret; |
dcf266c0 JG |
2236 | } else if (!strcmp((const char *) attr_node->name, |
2237 | config_element_tracefile_size)) { | |
2238 | xmlChar *content; | |
2239 | ||
2240 | /* tracefile_size */ | |
2241 | content = xmlNodeGetContent(attr_node); | |
2242 | if (!content) { | |
2243 | ret = -LTTNG_ERR_NOMEM; | |
2244 | goto end; | |
2245 | } | |
2246 | ||
2247 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2248 | free(content); | |
2249 | if (ret) { | |
2250 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2251 | goto end; | |
2252 | } | |
2253 | } else if (!strcmp((const char *) attr_node->name, | |
2254 | config_element_tracefile_count)) { | |
2255 | xmlChar *content; | |
2256 | ||
2257 | /* tracefile_count */ | |
2258 | content = xmlNodeGetContent(attr_node); | |
2259 | if (!content) { | |
2260 | ret = -LTTNG_ERR_NOMEM; | |
2261 | goto end; | |
2262 | } | |
2263 | ||
2264 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2265 | free(content); | |
2266 | if (ret) { | |
2267 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2268 | goto end; | |
2269 | } | |
2270 | } else if (!strcmp((const char *) attr_node->name, | |
2271 | config_element_live_timer_interval)) { | |
2272 | xmlChar *content; | |
2273 | uint64_t live_timer_interval = 0; | |
2274 | ||
2275 | /* live_timer_interval */ | |
2276 | content = xmlNodeGetContent(attr_node); | |
2277 | if (!content) { | |
2278 | ret = -LTTNG_ERR_NOMEM; | |
2279 | goto end; | |
2280 | } | |
2281 | ||
2282 | ret = parse_uint(content, &live_timer_interval); | |
2283 | free(content); | |
2284 | if (ret) { | |
2285 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2286 | goto end; | |
2287 | } | |
2288 | ||
2289 | if (live_timer_interval > UINT_MAX) { | |
2290 | WARN("live_timer_interval out of range."); | |
2291 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2292 | goto end; | |
2293 | } | |
2294 | ||
2295 | channel->attr.live_timer_interval = | |
2296 | live_timer_interval; | |
4fc2b126 JR |
2297 | } else if (!strcmp((const char *) attr_node->name, |
2298 | config_element_monitor_timer_interval)) { | |
2299 | xmlChar *content; | |
2300 | uint64_t monitor_timer_interval = 0; | |
2301 | ||
2302 | /* monitor_timer_interval */ | |
2303 | content = xmlNodeGetContent(attr_node); | |
2304 | if (!content) { | |
2305 | ret = -LTTNG_ERR_NOMEM; | |
2306 | goto end; | |
2307 | } | |
2308 | ||
2309 | ret = parse_uint(content, &monitor_timer_interval); | |
2310 | free(content); | |
2311 | if (ret) { | |
2312 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2313 | goto end; | |
2314 | } | |
2315 | ||
2316 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2317 | monitor_timer_interval); | |
2318 | if (ret) { | |
2319 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2320 | goto end; | |
2321 | } | |
275472aa JR |
2322 | } else if (!strcmp((const char *) attr_node->name, |
2323 | config_element_blocking_timeout)) { | |
2324 | xmlChar *content; | |
2325 | int64_t blocking_timeout = 0; | |
2326 | ||
2327 | /* blocking_timeout */ | |
2328 | content = xmlNodeGetContent(attr_node); | |
2329 | if (!content) { | |
2330 | ret = -LTTNG_ERR_NOMEM; | |
2331 | goto end; | |
2332 | } | |
2333 | ||
2334 | ret = parse_int(content, &blocking_timeout); | |
2335 | free(content); | |
2336 | if (ret) { | |
2337 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2338 | goto end; | |
2339 | } | |
2340 | ||
2341 | ret = lttng_channel_set_blocking_timeout(channel, | |
2342 | blocking_timeout); | |
2343 | if (ret) { | |
2344 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2345 | goto end; | |
2346 | } | |
dcf266c0 JG |
2347 | } else if (!strcmp((const char *) attr_node->name, |
2348 | config_element_events)) { | |
2349 | /* events */ | |
2350 | *events_node = attr_node; | |
2351 | } else { | |
2352 | /* contexts */ | |
2353 | *contexts_node = attr_node; | |
2354 | } | |
2355 | ret = 0; | |
2356 | end: | |
2357 | return ret; | |
2358 | } | |
2359 | ||
2360 | static | |
2361 | int process_context_node(xmlNodePtr context_node, | |
2362 | struct lttng_handle *handle, const char *channel_name) | |
2363 | { | |
2364 | int ret; | |
2365 | struct lttng_event_context context; | |
2366 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2367 | ||
a0377dfe FD |
2368 | LTTNG_ASSERT(handle); |
2369 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2370 | |
2371 | if (!context_child_node) { | |
2372 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2373 | goto end; | |
2374 | } | |
2375 | ||
2376 | memset(&context, 0, sizeof(context)); | |
2377 | ||
2378 | if (!strcmp((const char *) context_child_node->name, | |
2379 | config_element_type)) { | |
2380 | /* type */ | |
2381 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2382 | |
dcf266c0 JG |
2383 | if (!content) { |
2384 | ret = -LTTNG_ERR_NOMEM; | |
2385 | goto end; | |
2386 | } | |
2387 | ||
2388 | ret = get_context_type(content); | |
2389 | free(content); | |
2390 | if (ret < 0) { | |
2391 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2392 | goto end; | |
2393 | } | |
2394 | ||
3afa94ae | 2395 | context.ctx = (lttng_event_context_type) ret; |
045fc617 JG |
2396 | } else if (!strcmp((const char *) context_child_node->name, |
2397 | config_element_context_perf)) { | |
2398 | /* perf */ | |
dcf266c0 JG |
2399 | xmlNodePtr perf_attr_node; |
2400 | ||
14ce5bd8 JG |
2401 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2402 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2403 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2404 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2405 | perf_attr_node; perf_attr_node = | |
2406 | xmlNextElementSibling(perf_attr_node)) { | |
2407 | if (!strcmp((const char *) perf_attr_node->name, | |
2408 | config_element_type)) { | |
2409 | xmlChar *content; | |
2410 | uint64_t type = 0; | |
2411 | ||
2412 | /* type */ | |
2413 | content = xmlNodeGetContent(perf_attr_node); | |
2414 | if (!content) { | |
2415 | ret = -LTTNG_ERR_NOMEM; | |
2416 | goto end; | |
2417 | } | |
2418 | ||
2419 | ret = parse_uint(content, &type); | |
2420 | free(content); | |
2421 | if (ret) { | |
2422 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2423 | goto end; | |
2424 | } | |
2425 | ||
2426 | if (type > UINT32_MAX) { | |
2427 | WARN("perf context type out of range."); | |
2428 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2429 | goto end; | |
2430 | } | |
2431 | ||
2432 | context.u.perf_counter.type = type; | |
2433 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2434 | config_element_config)) { | |
2435 | xmlChar *content; | |
2436 | uint64_t config = 0; | |
2437 | ||
2438 | /* config */ | |
2439 | content = xmlNodeGetContent(perf_attr_node); | |
2440 | if (!content) { | |
2441 | ret = -LTTNG_ERR_NOMEM; | |
2442 | goto end; | |
2443 | } | |
2444 | ||
2445 | ret = parse_uint(content, &config); | |
2446 | free(content); | |
2447 | if (ret) { | |
2448 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2449 | goto end; | |
2450 | } | |
2451 | ||
2452 | context.u.perf_counter.config = config; | |
2453 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2454 | config_element_name)) { | |
2455 | xmlChar *content; | |
dcf266c0 JG |
2456 | |
2457 | /* name */ | |
2458 | content = xmlNodeGetContent(perf_attr_node); | |
2459 | if (!content) { | |
2460 | ret = -LTTNG_ERR_NOMEM; | |
2461 | goto end; | |
2462 | } | |
2463 | ||
d2e67842 JG |
2464 | ret = lttng_strncpy(context.u.perf_counter.name, |
2465 | (const char *) content, | |
2466 | LTTNG_SYMBOL_NAME_LEN); | |
2467 | if (ret == -1) { | |
2468 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2469 | (const char *) content, | |
2470 | strlen((const char *) content), | |
2471 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2472 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2473 | free(content); | |
2474 | goto end; | |
2475 | } | |
dcf266c0 JG |
2476 | free(content); |
2477 | } | |
2478 | } | |
045fc617 JG |
2479 | } else if (!strcmp((const char *) context_child_node->name, |
2480 | config_element_context_app)) { | |
2481 | /* application context */ | |
2482 | xmlNodePtr app_ctx_node; | |
2483 | ||
2484 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2485 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2486 | app_ctx_node; app_ctx_node = | |
2487 | xmlNextElementSibling(app_ctx_node)) { | |
2488 | xmlChar *content; | |
2489 | char **target = strcmp( | |
2490 | (const char *) app_ctx_node->name, | |
2491 | config_element_context_app_provider_name) == 0 ? | |
2492 | &context.u.app_ctx.provider_name : | |
2493 | &context.u.app_ctx.ctx_name; | |
2494 | ||
2495 | content = xmlNodeGetContent(app_ctx_node); | |
2496 | if (!content) { | |
2497 | ret = -LTTNG_ERR_NOMEM; | |
2498 | goto end; | |
2499 | } | |
2500 | ||
2501 | *target = (char *) content; | |
2502 | } | |
2503 | } else { | |
2504 | /* Unrecognized context type */ | |
2505 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2506 | goto end; | |
dcf266c0 JG |
2507 | } |
2508 | ||
2509 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2510 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2511 | free(context.u.app_ctx.provider_name); | |
2512 | free(context.u.app_ctx.ctx_name); | |
2513 | } | |
dcf266c0 JG |
2514 | end: |
2515 | return ret; | |
2516 | } | |
2517 | ||
2518 | static | |
2519 | int process_contexts_node(xmlNodePtr contexts_node, | |
2520 | struct lttng_handle *handle, const char *channel_name) | |
2521 | { | |
2522 | int ret = 0; | |
2523 | xmlNodePtr context_node; | |
2524 | ||
2525 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2526 | context_node = xmlNextElementSibling(context_node)) { | |
2527 | ret = process_context_node(context_node, handle, channel_name); | |
2528 | if (ret) { | |
2529 | goto end; | |
2530 | } | |
2531 | } | |
2532 | end: | |
2533 | return ret; | |
2534 | } | |
2535 | ||
159b042f | 2536 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2537 | const char **element_id_tracker, |
159b042f JG |
2538 | const char **element_value_type, |
2539 | const char **element_value, | |
2540 | const char **element_value_alias, | |
55c9e7ca JR |
2541 | const char **element_name) |
2542 | { | |
2543 | int ret = 0; | |
2544 | ||
159b042f JG |
2545 | switch (process_attr) { |
2546 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2547 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2548 | *element_value_type = config_element_process_attr_pid_value; | |
2549 | *element_value = config_element_process_attr_id; | |
2550 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2551 | *element_name = NULL; |
2552 | break; | |
159b042f JG |
2553 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2554 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2555 | *element_value_type = config_element_process_attr_vpid_value; | |
2556 | *element_value = config_element_process_attr_id; | |
2557 | *element_value_alias = NULL; | |
55c9e7ca JR |
2558 | *element_name = NULL; |
2559 | break; | |
159b042f JG |
2560 | case LTTNG_PROCESS_ATTR_USER_ID: |
2561 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2562 | *element_value_type = config_element_process_attr_uid_value; | |
2563 | *element_value = config_element_process_attr_id; | |
2564 | *element_value_alias = NULL; | |
55c9e7ca JR |
2565 | *element_name = config_element_name; |
2566 | break; | |
159b042f JG |
2567 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2568 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2569 | *element_value_type = config_element_process_attr_vuid_value; | |
2570 | *element_value = config_element_process_attr_id; | |
2571 | *element_value_alias = NULL; | |
55c9e7ca JR |
2572 | *element_name = config_element_name; |
2573 | break; | |
159b042f JG |
2574 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2575 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2576 | *element_value_type = config_element_process_attr_gid_value; | |
2577 | *element_value = config_element_process_attr_id; | |
2578 | *element_value_alias = NULL; | |
55c9e7ca JR |
2579 | *element_name = config_element_name; |
2580 | break; | |
159b042f JG |
2581 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2582 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2583 | *element_value_type = config_element_process_attr_vgid_value; | |
2584 | *element_value = config_element_process_attr_id; | |
2585 | *element_value_alias = NULL; | |
55c9e7ca JR |
2586 | *element_name = config_element_name; |
2587 | break; | |
2588 | default: | |
2589 | ret = LTTNG_ERR_INVALID; | |
2590 | } | |
2591 | return ret; | |
2592 | } | |
2593 | ||
f7af9a72 JG |
2594 | static int process_legacy_pid_tracker_node( |
2595 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2596 | { | |
2597 | int ret = 0, child_count; | |
2598 | xmlNodePtr targets_node = NULL; | |
2599 | xmlNodePtr node; | |
2600 | const char *element_id_tracker; | |
2601 | const char *element_target_id; | |
2602 | const char *element_id; | |
2603 | const char *element_id_alias; | |
2604 | const char *element_name; | |
2605 | enum lttng_error_code tracker_handle_ret_code; | |
2606 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2607 | enum lttng_process_attr_tracker_handle_status status; | |
2608 | const enum lttng_process_attr process_attr = | |
2609 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2610 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2611 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2612 | ||
a0377dfe | 2613 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2614 | |
2615 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2616 | handle->session_name, handle->domain.type, | |
2617 | process_attr, | |
2618 | &tracker_handle); | |
2619 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2620 | ret = LTTNG_ERR_INVALID; | |
2621 | goto end; | |
2622 | } | |
2623 | ||
2624 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2625 | &element_target_id, &element_id, &element_id_alias, | |
2626 | &element_name); | |
2627 | if (ret) { | |
2628 | goto end; | |
2629 | } | |
2630 | ||
2631 | /* Get the targets node */ | |
2632 | for (node = xmlFirstElementChild(trackers_node); node; | |
2633 | node = xmlNextElementSibling(node)) { | |
2634 | if (!strcmp((const char *) node->name, | |
2635 | config_element_tracker_targets_legacy)) { | |
2636 | targets_node = node; | |
2637 | break; | |
2638 | } | |
3afa94ae | 2639 | } |
f7af9a72 JG |
2640 | |
2641 | if (!targets_node) { | |
2642 | ret = LTTNG_ERR_INVALID; | |
2643 | goto end; | |
2644 | } | |
2645 | ||
2646 | /* Go through all id target node */ | |
2647 | child_count = xmlChildElementCount(targets_node); | |
2648 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2649 | tracker_handle, | |
2650 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2651 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2652 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2653 | ret = LTTNG_ERR_UNK; | |
2654 | goto end; | |
2655 | } | |
2656 | ||
2657 | /* Add all tracked values. */ | |
2658 | for (node = xmlFirstElementChild(targets_node); node; | |
2659 | node = xmlNextElementSibling(node)) { | |
2660 | xmlNodePtr pid_target_node = node; | |
2661 | ||
2662 | /* get pid_target node and track it */ | |
2663 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2664 | node = xmlNextElementSibling(node)) { | |
2665 | if (!strcmp((const char *) node->name, | |
2666 | config_element_tracker_pid_legacy)) { | |
2667 | int64_t id; | |
2668 | xmlChar *content = xmlNodeGetContent(node); | |
2669 | ||
2670 | if (!content) { | |
2671 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2672 | goto end; | |
2673 | } | |
2674 | ||
2675 | ret = parse_int(content, &id); | |
2676 | free(content); | |
2677 | if (ret) { | |
2678 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2679 | goto end; | |
2680 | } | |
2681 | ||
2682 | switch (process_attr) { | |
2683 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2684 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2685 | tracker_handle, | |
2686 | (pid_t) id); | |
2687 | break; | |
2688 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2689 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2690 | tracker_handle, | |
2691 | (pid_t) id); | |
2692 | break; | |
2693 | default: | |
2694 | ret = LTTNG_ERR_INVALID; | |
2695 | goto end; | |
2696 | } | |
2697 | } | |
2698 | switch (status) { | |
2699 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2700 | continue; | |
2701 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2702 | ret = LTTNG_ERR_INVALID; | |
2703 | break; | |
2704 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2705 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2706 | break; | |
2707 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2708 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2709 | break; | |
2710 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2711 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2712 | default: | |
2713 | ret = LTTNG_ERR_UNK; | |
2714 | goto end; | |
2715 | } | |
2716 | } | |
2717 | node = pid_target_node; | |
2718 | } | |
2719 | ||
2720 | end: | |
2721 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2722 | return ret; | |
2723 | } | |
2724 | ||
55c9e7ca JR |
2725 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2726 | struct lttng_handle *handle, | |
159b042f | 2727 | enum lttng_process_attr process_attr) |
847a5916 | 2728 | { |
159b042f | 2729 | int ret = 0, child_count; |
f7af9a72 | 2730 | xmlNodePtr values_node = NULL; |
847a5916 | 2731 | xmlNodePtr node; |
55c9e7ca JR |
2732 | const char *element_id_tracker; |
2733 | const char *element_target_id; | |
2734 | const char *element_id; | |
2735 | const char *element_id_alias; | |
2736 | const char *element_name; | |
159b042f JG |
2737 | enum lttng_error_code tracker_handle_ret_code; |
2738 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2739 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2740 | |
a0377dfe FD |
2741 | LTTNG_ASSERT(handle); |
2742 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2743 | |
159b042f JG |
2744 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2745 | handle->session_name, handle->domain.type, process_attr, | |
2746 | &tracker_handle); | |
2747 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2748 | ret = LTTNG_ERR_INVALID; | |
2749 | goto end; | |
2750 | } | |
2751 | ||
2752 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2753 | &element_target_id, &element_id, &element_id_alias, |
2754 | &element_name); | |
2755 | if (ret) { | |
159b042f | 2756 | goto end; |
55c9e7ca JR |
2757 | } |
2758 | ||
f7af9a72 | 2759 | /* get the values node */ |
55c9e7ca JR |
2760 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2761 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2762 | if (!strcmp((const char *) node->name, |
159b042f | 2763 | config_element_process_attr_values)) { |
f7af9a72 | 2764 | values_node = node; |
847a5916 JR |
2765 | break; |
2766 | } | |
2767 | } | |
2768 | ||
f7af9a72 | 2769 | if (!values_node) { |
847a5916 JR |
2770 | ret = LTTNG_ERR_INVALID; |
2771 | goto end; | |
2772 | } | |
2773 | ||
55c9e7ca | 2774 | /* Go through all id target node */ |
f7af9a72 | 2775 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2776 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2777 | tracker_handle, | |
2778 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2779 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2780 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2781 | ret = LTTNG_ERR_UNK; | |
2782 | goto end; | |
847a5916 | 2783 | } |
159b042f JG |
2784 | |
2785 | /* Add all tracked values. */ | |
f7af9a72 | 2786 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2787 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2788 | xmlNodePtr id_target_node = node; |
847a5916 | 2789 | |
55c9e7ca JR |
2790 | /* get id node and track it */ |
2791 | for (node = xmlFirstElementChild(id_target_node); node; | |
2792 | node = xmlNextElementSibling(node)) { | |
2793 | if (!strcmp((const char *) node->name, element_id) || | |
2794 | (element_id_alias && | |
2795 | !strcmp((const char *) node->name, | |
2796 | element_id_alias))) { | |
2797 | int64_t id; | |
159b042f | 2798 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2799 | |
847a5916 JR |
2800 | if (!content) { |
2801 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2802 | goto end; | |
2803 | } | |
2804 | ||
55c9e7ca | 2805 | ret = parse_int(content, &id); |
847a5916 JR |
2806 | free(content); |
2807 | if (ret) { | |
2808 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2809 | goto end; | |
2810 | } | |
2811 | ||
159b042f JG |
2812 | switch (process_attr) { |
2813 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2814 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2815 | tracker_handle, | |
2816 | (pid_t) id); | |
2817 | break; | |
2818 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2819 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2820 | tracker_handle, | |
2821 | (pid_t) id); | |
2822 | break; | |
2823 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2824 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2825 | tracker_handle, | |
2826 | (uid_t) id); | |
2827 | break; | |
2828 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2829 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2830 | tracker_handle, | |
2831 | (uid_t) id); | |
2832 | break; | |
2833 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2834 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2835 | tracker_handle, | |
2836 | (gid_t) id); | |
2837 | break; | |
2838 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2839 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2840 | tracker_handle, | |
2841 | (gid_t) id); | |
2842 | break; | |
2843 | default: | |
2844 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2845 | goto end; |
2846 | } | |
159b042f JG |
2847 | } else if (element_name && |
2848 | !strcmp((const char *) node->name, | |
2849 | element_name)) { | |
2850 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 2851 | |
55c9e7ca JR |
2852 | if (!content) { |
2853 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2854 | goto end; | |
2855 | } | |
2d97a006 | 2856 | |
159b042f JG |
2857 | switch (process_attr) { |
2858 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2859 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2860 | tracker_handle, | |
2861 | (const char *) content); | |
2862 | break; | |
2863 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2864 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2865 | tracker_handle, | |
2866 | (const char *) content); | |
2867 | break; | |
2868 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2869 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2870 | tracker_handle, | |
2871 | (const char *) content); | |
2872 | break; | |
2873 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2874 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2875 | tracker_handle, | |
2876 | (const char *) content); | |
2877 | break; | |
2878 | default: | |
2879 | free(content); | |
2880 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2881 | goto end; |
2882 | } | |
55c9e7ca | 2883 | free(content); |
159b042f JG |
2884 | } |
2885 | switch (status) { | |
2886 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2887 | continue; | |
2888 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2889 | ret = LTTNG_ERR_INVALID; | |
2890 | break; | |
2891 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2892 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2893 | break; | |
2894 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2895 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2896 | break; | |
2897 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2898 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2899 | default: | |
2900 | ret = LTTNG_ERR_UNK; | |
2901 | goto end; | |
847a5916 JR |
2902 | } |
2903 | } | |
55c9e7ca | 2904 | node = id_target_node; |
847a5916 JR |
2905 | } |
2906 | ||
2907 | end: | |
159b042f | 2908 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2909 | return ret; |
2910 | } | |
2911 | ||
dcf266c0 JG |
2912 | static |
2913 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2914 | { | |
2915 | int ret; | |
3afa94ae | 2916 | struct lttng_domain domain {}; |
dcf266c0 | 2917 | struct lttng_handle *handle = NULL; |
4fc2b126 | 2918 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2919 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2920 | xmlNodePtr trackers_node = NULL; |
2921 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2922 | xmlNodePtr vpid_tracker_node = NULL; |
2923 | xmlNodePtr uid_tracker_node = NULL; | |
2924 | xmlNodePtr vuid_tracker_node = NULL; | |
2925 | xmlNodePtr gid_tracker_node = NULL; | |
2926 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2927 | xmlNodePtr node; |
2928 | ||
a0377dfe | 2929 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2930 | |
2931 | ret = init_domain(domain_node, &domain); | |
2932 | if (ret) { | |
2933 | goto end; | |
2934 | } | |
2935 | ||
2936 | handle = lttng_create_handle(session_name, &domain); | |
2937 | if (!handle) { | |
2938 | ret = -LTTNG_ERR_NOMEM; | |
2939 | goto end; | |
2940 | } | |
2941 | ||
2942 | /* get the channels node */ | |
2943 | for (node = xmlFirstElementChild(domain_node); node; | |
2944 | node = xmlNextElementSibling(node)) { | |
2945 | if (!strcmp((const char *) node->name, | |
2946 | config_element_channels)) { | |
2947 | channels_node = node; | |
2948 | break; | |
2949 | } | |
2950 | } | |
2951 | ||
2952 | if (!channels_node) { | |
2953 | goto end; | |
2954 | } | |
2955 | ||
2956 | /* create all channels */ | |
2957 | for (node = xmlFirstElementChild(channels_node); node; | |
2958 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2959 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2960 | xmlNodePtr contexts_node = NULL; |
2961 | xmlNodePtr events_node = NULL; | |
2962 | xmlNodePtr channel_attr_node; | |
2963 | ||
36d1687c JG |
2964 | /* |
2965 | * Channels of the "agent" types cannot be created directly. | |
2966 | * They are meant to be created implicitly through the | |
2967 | * activation of events in their domain. However, a user | |
2968 | * can override the default channel configuration attributes | |
2969 | * by creating the underlying UST channel _before_ enabling | |
2970 | * an agent domain event. | |
2971 | * | |
2972 | * Hence, the channel's type is substituted before the creation | |
2973 | * and restored by the time the events are created. | |
2974 | */ | |
2975 | switch (domain.type) { | |
2976 | case LTTNG_DOMAIN_JUL: | |
2977 | case LTTNG_DOMAIN_LOG4J: | |
2978 | case LTTNG_DOMAIN_PYTHON: | |
2979 | domain.type = LTTNG_DOMAIN_UST; | |
2980 | default: | |
2981 | break; | |
2982 | } | |
2983 | ||
4fc2b126 JR |
2984 | channel = lttng_channel_create(&domain); |
2985 | if (!channel) { | |
2986 | ret = -1; | |
2987 | goto end; | |
2988 | } | |
dcf266c0 JG |
2989 | |
2990 | for (channel_attr_node = xmlFirstElementChild(node); | |
2991 | channel_attr_node; channel_attr_node = | |
2992 | xmlNextElementSibling(channel_attr_node)) { | |
2993 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2994 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2995 | if (ret) { |
2996 | goto end; | |
2997 | } | |
2998 | } | |
2999 | ||
4fc2b126 | 3000 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3001 | if (ret < 0) { |
3002 | goto end; | |
3003 | } | |
3004 | ||
36d1687c JG |
3005 | /* Restore the original channel domain. */ |
3006 | domain.type = original_domain; | |
3007 | ||
4fc2b126 | 3008 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3009 | if (ret) { |
3010 | goto end; | |
3011 | } | |
3012 | ||
3013 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3014 | channel->name); |
dcf266c0 JG |
3015 | if (ret) { |
3016 | goto end; | |
3017 | } | |
4fc2b126 JR |
3018 | |
3019 | lttng_channel_destroy(channel); | |
dcf266c0 | 3020 | } |
4fc2b126 | 3021 | channel = NULL; |
847a5916 JR |
3022 | |
3023 | /* get the trackers node */ | |
3024 | for (node = xmlFirstElementChild(domain_node); node; | |
3025 | node = xmlNextElementSibling(node)) { | |
3026 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3027 | config_element_process_attr_trackers) || |
3028 | !strcmp((const char *) node->name, | |
3029 | config_element_trackers_legacy)) { | |
3030 | if (trackers_node) { | |
3031 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3032 | config_element_process_attr_trackers, | |
3033 | config_element_trackers_legacy); | |
3034 | ret = -1; | |
3035 | goto end; | |
3036 | } | |
847a5916 JR |
3037 | trackers_node = node; |
3038 | break; | |
3039 | } | |
3040 | } | |
3041 | ||
3042 | if (!trackers_node) { | |
3043 | goto end; | |
3044 | } | |
3045 | ||
3046 | for (node = xmlFirstElementChild(trackers_node); node; | |
3047 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3048 | if (!strcmp((const char *) node->name, |
159b042f | 3049 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3050 | pid_tracker_node = node; |
55c9e7ca | 3051 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3052 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3053 | if (ret) { |
3054 | goto end; | |
3055 | } | |
3056 | } | |
3057 | if (!strcmp((const char *) node->name, | |
159b042f | 3058 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3059 | vpid_tracker_node = node; |
3060 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3061 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3062 | if (ret) { |
3063 | goto end; | |
3064 | } | |
3065 | } | |
3066 | if (!strcmp((const char *) node->name, | |
159b042f | 3067 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3068 | uid_tracker_node = node; |
3069 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3070 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3071 | if (ret) { |
3072 | goto end; | |
3073 | } | |
3074 | } | |
3075 | if (!strcmp((const char *) node->name, | |
159b042f | 3076 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3077 | vuid_tracker_node = node; |
3078 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3079 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3080 | if (ret) { |
3081 | goto end; | |
3082 | } | |
3083 | } | |
3084 | if (!strcmp((const char *) node->name, | |
159b042f | 3085 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3086 | gid_tracker_node = node; |
3087 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3088 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3089 | if (ret) { |
3090 | goto end; | |
3091 | } | |
3092 | } | |
3093 | if (!strcmp((const char *) node->name, | |
159b042f | 3094 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3095 | vgid_tracker_node = node; |
3096 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3097 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3098 | if (ret) { |
3099 | goto end; | |
3100 | } | |
3101 | } | |
f7af9a72 JG |
3102 | if (!strcmp((const char *) node->name, |
3103 | config_element_pid_tracker_legacy)) { | |
3104 | ret = process_legacy_pid_tracker_node(node, handle); | |
3105 | if (ret) { | |
3106 | goto end; | |
3107 | } | |
3108 | } | |
847a5916 JR |
3109 | } |
3110 | ||
dcf266c0 | 3111 | end: |
4fc2b126 | 3112 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3113 | lttng_destroy_handle(handle); |
3114 | return ret; | |
3115 | } | |
3116 | ||
66ea93b1 JG |
3117 | static |
3118 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3119 | { | |
3120 | int ret; | |
3121 | enum lttng_rotation_status status; | |
3122 | struct lttng_rotation_schedule *periodic = | |
3123 | lttng_rotation_schedule_periodic_create(); | |
3124 | ||
3125 | if (!periodic) { | |
3126 | ret = -LTTNG_ERR_NOMEM; | |
3127 | goto error; | |
3128 | } | |
3129 | ||
3130 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3131 | time_us); | |
3132 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3133 | ret = -LTTNG_ERR_INVALID; | |
3134 | goto error; | |
3135 | } | |
3136 | ||
3137 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3138 | switch (status) { | |
3139 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3140 | ret = 0; |
66ea93b1 JG |
3141 | break; |
3142 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3143 | case LTTNG_ROTATION_STATUS_INVALID: | |
3144 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3145 | break; | |
3146 | default: | |
3147 | ret = -LTTNG_ERR_UNK; | |
3148 | break; | |
3149 | } | |
3150 | error: | |
3151 | lttng_rotation_schedule_destroy(periodic); | |
3152 | return ret; | |
3153 | } | |
3154 | ||
3155 | static | |
3156 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3157 | { | |
3158 | int ret; | |
3159 | enum lttng_rotation_status status; | |
3160 | struct lttng_rotation_schedule *size = | |
3161 | lttng_rotation_schedule_size_threshold_create(); | |
3162 | ||
3163 | if (!size) { | |
3164 | ret = -LTTNG_ERR_NOMEM; | |
3165 | goto error; | |
3166 | } | |
3167 | ||
3168 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3169 | size_bytes); | |
3170 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3171 | ret = -LTTNG_ERR_INVALID; | |
3172 | goto error; | |
3173 | } | |
3174 | ||
3175 | status = lttng_session_add_rotation_schedule(name, size); | |
3176 | switch (status) { | |
3177 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3178 | ret = 0; |
66ea93b1 JG |
3179 | break; |
3180 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3181 | case LTTNG_ROTATION_STATUS_INVALID: | |
3182 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3183 | break; | |
3184 | default: | |
3185 | ret = -LTTNG_ERR_UNK; | |
3186 | break; | |
3187 | } | |
3188 | error: | |
3189 | lttng_rotation_schedule_destroy(size); | |
3190 | return ret; | |
3191 | } | |
3192 | ||
ce6176f2 JG |
3193 | static |
3194 | int process_session_rotation_schedules_node( | |
3195 | xmlNodePtr schedules_node, | |
3196 | uint64_t *rotation_timer_interval, | |
3197 | uint64_t *rotation_size) | |
3198 | { | |
3199 | int ret = 0; | |
3200 | xmlNodePtr child; | |
3201 | ||
3202 | for (child = xmlFirstElementChild(schedules_node); | |
3203 | child; | |
3204 | child = xmlNextElementSibling(child)) { | |
3205 | if (!strcmp((const char *) child->name, | |
3206 | config_element_rotation_schedule_periodic)) { | |
3207 | xmlChar *content; | |
3208 | xmlNodePtr time_us_node; | |
3209 | ||
3210 | /* periodic rotation schedule */ | |
3211 | time_us_node = xmlFirstElementChild(child); | |
3212 | if (!time_us_node || | |
3213 | strcmp((const char *) time_us_node->name, | |
3214 | config_element_rotation_schedule_periodic_time_us)) { | |
3215 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3216 | goto end; | |
3217 | } | |
3218 | ||
3219 | /* time_us child */ | |
3220 | content = xmlNodeGetContent(time_us_node); | |
3221 | if (!content) { | |
3222 | ret = -LTTNG_ERR_NOMEM; | |
3223 | goto end; | |
3224 | } | |
3225 | ret = parse_uint(content, rotation_timer_interval); | |
3226 | free(content); | |
3227 | if (ret) { | |
3228 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3229 | goto end; | |
3230 | } | |
3231 | } else if (!strcmp((const char *) child->name, | |
3232 | config_element_rotation_schedule_size_threshold)) { | |
3233 | xmlChar *content; | |
3234 | xmlNodePtr bytes_node; | |
3235 | ||
3236 | /* size_threshold rotation schedule */ | |
3237 | bytes_node = xmlFirstElementChild(child); | |
3238 | if (!bytes_node || | |
3239 | strcmp((const char *) bytes_node->name, | |
3240 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3241 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3242 | goto end; | |
3243 | } | |
3244 | ||
3245 | /* bytes child */ | |
3246 | content = xmlNodeGetContent(bytes_node); | |
3247 | if (!content) { | |
3248 | ret = -LTTNG_ERR_NOMEM; | |
3249 | goto end; | |
3250 | } | |
3251 | ret = parse_uint(content, rotation_size); | |
3252 | free(content); | |
3253 | if (ret) { | |
3254 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3255 | goto end; | |
3256 | } | |
3257 | } | |
3258 | } | |
3259 | ||
3260 | end: | |
3261 | return ret; | |
3262 | } | |
3263 | ||
dcf266c0 JG |
3264 | static |
3265 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3266 | int overwrite, |
3267 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3268 | { |
3269 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3270 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3271 | rotation_timer_interval = 0, |
3272 | rotation_size = 0; | |
d324faf7 | 3273 | xmlChar *name = NULL; |
9e7c9f56 | 3274 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3275 | xmlNodePtr domains_node = NULL; |
3276 | xmlNodePtr output_node = NULL; | |
3277 | xmlNodePtr node; | |
90936dcf | 3278 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3279 | struct lttng_domain *kernel_domain = NULL; |
3280 | struct lttng_domain *ust_domain = NULL; | |
3281 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3282 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3283 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3284 | |
3285 | for (node = xmlFirstElementChild(session_node); node; | |
3286 | node = xmlNextElementSibling(node)) { | |
3287 | if (!name && !strcmp((const char *) node->name, | |
3288 | config_element_name)) { | |
3289 | /* name */ | |
3290 | xmlChar *node_content = xmlNodeGetContent(node); | |
3291 | if (!node_content) { | |
3292 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3293 | goto error; |
dcf266c0 JG |
3294 | } |
3295 | ||
d324faf7 | 3296 | name = node_content; |
dcf266c0 JG |
3297 | } else if (!domains_node && !strcmp((const char *) node->name, |
3298 | config_element_domains)) { | |
3299 | /* domains */ | |
3300 | domains_node = node; | |
3301 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3302 | config_element_started)) { | |
3303 | /* started */ | |
3304 | xmlChar *node_content = xmlNodeGetContent(node); | |
3305 | if (!node_content) { | |
3306 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3307 | goto error; |
dcf266c0 JG |
3308 | } |
3309 | ||
3310 | ret = parse_bool(node_content, &started); | |
3311 | free(node_content); | |
3312 | if (ret) { | |
3313 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3314 | goto error; |
dcf266c0 JG |
3315 | } |
3316 | } else if (!output_node && !strcmp((const char *) node->name, | |
3317 | config_element_output)) { | |
3318 | /* output */ | |
3319 | output_node = node; | |
9e7c9f56 JR |
3320 | } else if (!shm_path && !strcmp((const char *) node->name, |
3321 | config_element_shared_memory_path)) { | |
3322 | /* shared memory path */ | |
3323 | xmlChar *node_content = xmlNodeGetContent(node); | |
3324 | if (!node_content) { | |
3325 | ret = -LTTNG_ERR_NOMEM; | |
3326 | goto error; | |
3327 | } | |
3328 | ||
3329 | shm_path = node_content; | |
dcf266c0 | 3330 | } else { |
259c2674 JD |
3331 | /* |
3332 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3333 | * rotation_timer_interval. |
3334 | */ | |
3335 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3336 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3337 | if (!strcmp((const char *) attributes_child->name, | |
3338 | config_element_snapshot_mode)) { | |
3339 | /* snapshot_mode */ | |
3340 | xmlChar *snapshot_mode_content = | |
3341 | xmlNodeGetContent(attributes_child); | |
3342 | if (!snapshot_mode_content) { | |
3343 | ret = -LTTNG_ERR_NOMEM; | |
3344 | goto error; | |
3345 | } | |
dcf266c0 | 3346 | |
90936dcf JD |
3347 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3348 | free(snapshot_mode_content); | |
3349 | if (ret) { | |
3350 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3351 | goto error; | |
3352 | } | |
3353 | } else if (!strcmp((const char *) attributes_child->name, | |
3354 | config_element_live_timer_interval)) { | |
3355 | /* live_timer_interval */ | |
3356 | xmlChar *timer_interval_content = | |
3357 | xmlNodeGetContent(attributes_child); | |
3358 | if (!timer_interval_content) { | |
3359 | ret = -LTTNG_ERR_NOMEM; | |
3360 | goto error; | |
3361 | } | |
dcf266c0 | 3362 | |
90936dcf JD |
3363 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3364 | free(timer_interval_content); | |
3365 | if (ret) { | |
3366 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3367 | goto error; | |
3368 | } | |
ce6176f2 JG |
3369 | } else if (!strcmp((const char *) attributes_child->name, |
3370 | config_element_rotation_schedules)) { | |
3371 | ret = process_session_rotation_schedules_node( | |
3372 | attributes_child, | |
3373 | &rotation_timer_interval, | |
3374 | &rotation_size); | |
90936dcf JD |
3375 | if (ret) { |
3376 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3377 | goto error; | |
3378 | } | |
259c2674 | 3379 | |
259c2674 JD |
3380 | } |
3381 | } | |
dcf266c0 JG |
3382 | } |
3383 | } | |
3384 | ||
3385 | if (!name) { | |
3386 | /* Mandatory attribute, as defined in the session XSD */ | |
3387 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3388 | goto error; |
dcf266c0 JG |
3389 | } |
3390 | ||
d324faf7 | 3391 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3392 | /* This is not the session we are looking for */ |
c2da8cde DG |
3393 | ret = -LTTNG_ERR_NO_SESSION; |
3394 | goto error; | |
dcf266c0 JG |
3395 | } |
3396 | ||
3397 | /* Init domains to create the session handles */ | |
3398 | for (node = xmlFirstElementChild(domains_node); node; | |
3399 | node = xmlNextElementSibling(node)) { | |
64803277 | 3400 | lttng_domain *domain = zmalloc<lttng_domain>(); |
dcf266c0 | 3401 | |
dcf266c0 JG |
3402 | if (!domain) { |
3403 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3404 | goto error; |
dcf266c0 JG |
3405 | } |
3406 | ||
3407 | ret = init_domain(node, domain); | |
3408 | if (ret) { | |
3409 | goto domain_init_error; | |
3410 | } | |
3411 | ||
3412 | switch (domain->type) { | |
3413 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3414 | if (kernel_domain) { |
3415 | /* Same domain seen twice, invalid! */ | |
3416 | goto domain_init_error; | |
3417 | } | |
dcf266c0 JG |
3418 | kernel_domain = domain; |
3419 | break; | |
3420 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3421 | if (ust_domain) { |
3422 | /* Same domain seen twice, invalid! */ | |
3423 | goto domain_init_error; | |
3424 | } | |
dcf266c0 JG |
3425 | ust_domain = domain; |
3426 | break; | |
3427 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3428 | if (jul_domain) { |
3429 | /* Same domain seen twice, invalid! */ | |
3430 | goto domain_init_error; | |
3431 | } | |
dcf266c0 JG |
3432 | jul_domain = domain; |
3433 | break; | |
5cdb6027 DG |
3434 | case LTTNG_DOMAIN_LOG4J: |
3435 | if (log4j_domain) { | |
3436 | /* Same domain seen twice, invalid! */ | |
3437 | goto domain_init_error; | |
3438 | } | |
3439 | log4j_domain = domain; | |
3440 | break; | |
0e115563 DG |
3441 | case LTTNG_DOMAIN_PYTHON: |
3442 | if (python_domain) { | |
3443 | /* Same domain seen twice, invalid! */ | |
3444 | goto domain_init_error; | |
3445 | } | |
3446 | python_domain = domain; | |
3447 | break; | |
dcf266c0 JG |
3448 | default: |
3449 | WARN("Invalid domain type"); | |
3450 | goto domain_init_error; | |
3451 | } | |
3452 | continue; | |
3453 | domain_init_error: | |
3454 | free(domain); | |
3455 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3456 | goto error; |
dcf266c0 JG |
3457 | } |
3458 | ||
2aaf5fc7 JR |
3459 | /* Apply overrides */ |
3460 | if (overrides) { | |
3461 | if (overrides->session_name) { | |
3462 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3463 | if (!name_override) { | |
3464 | ret = -LTTNG_ERR_NOMEM; | |
3465 | goto error; | |
3466 | } | |
3467 | ||
3468 | /* Overrides the session name to the provided name */ | |
3469 | xmlFree(name); | |
3470 | name = name_override; | |
3471 | } | |
3472 | } | |
3473 | ||
40b4155f | 3474 | if (overwrite) { |
dcf266c0 | 3475 | /* Destroy session if it exists */ |
d324faf7 | 3476 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3477 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3478 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3479 | goto error; |
dcf266c0 JG |
3480 | } |
3481 | } | |
3482 | ||
3483 | /* Create session type depending on output type */ | |
3484 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3485 | ret = create_snapshot_session((const char *) name, output_node, |
3486 | overrides); | |
dcf266c0 JG |
3487 | } else if (live_timer_interval && |
3488 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3489 | ret = create_session((const char *) name, |
1b08cbce | 3490 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3491 | } else { |
3492 | /* regular session */ | |
194dfca0 | 3493 | ret = create_session((const char *) name, |
1b08cbce | 3494 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3495 | } |
dcf266c0 | 3496 | if (ret) { |
c2da8cde | 3497 | goto error; |
dcf266c0 JG |
3498 | } |
3499 | ||
9e7c9f56 JR |
3500 | if (shm_path) { |
3501 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3502 | (const char *) shm_path); |
9e7c9f56 JR |
3503 | if (ret) { |
3504 | goto error; | |
3505 | } | |
3506 | } | |
3507 | ||
dcf266c0 JG |
3508 | for (node = xmlFirstElementChild(domains_node); node; |
3509 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3510 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3511 | if (ret) { |
3512 | goto end; | |
3513 | } | |
3514 | } | |
3515 | ||
66ea93b1 JG |
3516 | if (rotation_timer_interval) { |
3517 | ret = add_periodic_rotation((const char *) name, | |
3518 | rotation_timer_interval); | |
3519 | if (ret < 0) { | |
259c2674 JD |
3520 | goto error; |
3521 | } | |
66ea93b1 JG |
3522 | } |
3523 | if (rotation_size) { | |
3524 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3525 | rotation_size); |
66ea93b1 | 3526 | if (ret < 0) { |
259c2674 JD |
3527 | goto error; |
3528 | } | |
3529 | } | |
3530 | ||
dcf266c0 | 3531 | if (started) { |
d324faf7 | 3532 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3533 | if (ret) { |
3534 | goto end; | |
3535 | } | |
3536 | } | |
c2da8cde | 3537 | |
dcf266c0 | 3538 | end: |
b2579dc1 | 3539 | if (ret < 0) { |
d324faf7 JG |
3540 | ERR("Failed to load session %s: %s", (const char *) name, |
3541 | lttng_strerror(ret)); | |
3542 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3543 | } |
3544 | ||
c2da8cde | 3545 | error: |
dcf266c0 JG |
3546 | free(kernel_domain); |
3547 | free(ust_domain); | |
3548 | free(jul_domain); | |
5cdb6027 | 3549 | free(log4j_domain); |
135a3893 | 3550 | free(python_domain); |
d324faf7 | 3551 | xmlFree(name); |
9e7c9f56 | 3552 | xmlFree(shm_path); |
dcf266c0 JG |
3553 | return ret; |
3554 | } | |
3555 | ||
cf53c06d DG |
3556 | /* |
3557 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3558 | * Return -1 if the path is EPERM. | |
3559 | */ | |
3560 | static int validate_file_read_creds(const char *path) | |
3561 | { | |
3562 | int ret; | |
3563 | ||
a0377dfe | 3564 | LTTNG_ASSERT(path); |
cf53c06d DG |
3565 | |
3566 | /* Can we read the file. */ | |
3567 | ret = access(path, R_OK); | |
3568 | if (!ret) { | |
3569 | goto valid; | |
3570 | } | |
3571 | if (errno == EACCES) { | |
3572 | return -1; | |
3573 | } else { | |
3574 | /* Invalid. */ | |
3575 | return 0; | |
3576 | } | |
3577 | valid: | |
3578 | return 1; | |
3579 | } | |
3580 | ||
dcf266c0 JG |
3581 | static |
3582 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3583 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3584 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3585 | { |
3586 | int ret, session_found = !session_name; | |
3587 | xmlDocPtr doc = NULL; | |
3588 | xmlNodePtr sessions_node; | |
3589 | xmlNodePtr session_node; | |
dcf266c0 | 3590 | |
a0377dfe FD |
3591 | LTTNG_ASSERT(path); |
3592 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3593 | |
cf53c06d DG |
3594 | ret = validate_file_read_creds(path); |
3595 | if (ret != 1) { | |
3596 | if (ret == -1) { | |
3597 | ret = -LTTNG_ERR_EPERM; | |
3598 | } else { | |
3599 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3600 | } | |
dcf266c0 JG |
3601 | goto end; |
3602 | } | |
3603 | ||
3604 | doc = xmlParseFile(path); | |
3605 | if (!doc) { | |
3606 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3607 | goto end; | |
3608 | } | |
3609 | ||
3610 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3611 | if (ret) { | |
3612 | ERR("Session configuration file validation failed"); | |
3613 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3614 | goto end; | |
3615 | } | |
3616 | ||
3617 | sessions_node = xmlDocGetRootElement(doc); | |
3618 | if (!sessions_node) { | |
55c9e7ca | 3619 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3620 | goto end; |
3621 | } | |
3622 | ||
3623 | for (session_node = xmlFirstElementChild(sessions_node); | |
3624 | session_node; session_node = | |
3625 | xmlNextElementSibling(session_node)) { | |
3626 | ret = process_session_node(session_node, | |
1b08cbce | 3627 | session_name, overwrite, overrides); |
317ea246 JG |
3628 | if (!session_name && ret) { |
3629 | /* Loading error occurred. */ | |
3630 | goto end; | |
3631 | } else if (session_name) { | |
3632 | if (ret == 0) { | |
3633 | /* Target session found and loaded */ | |
3634 | session_found = 1; | |
3635 | break; | |
3636 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3637 | /* | |
3638 | * Ignore this error, we are looking for a | |
3639 | * specific session. | |
3640 | */ | |
3641 | ret = 0; | |
3642 | } else { | |
3643 | /* Loading error occurred. */ | |
3644 | goto end; | |
3645 | } | |
dcf266c0 JG |
3646 | } |
3647 | } | |
3648 | end: | |
3649 | xmlFreeDoc(doc); | |
3650 | if (!ret) { | |
a96bc65d | 3651 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3652 | } |
3653 | return ret; | |
3654 | } | |
3655 | ||
3656 | static | |
3657 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3658 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3659 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3660 | { |
3661 | int ret, session_found = !session_name; | |
dcf266c0 | 3662 | DIR *directory = NULL; |
cce35f91 JG |
3663 | struct lttng_dynamic_buffer file_path; |
3664 | size_t path_len; | |
dcf266c0 | 3665 | |
a0377dfe FD |
3666 | LTTNG_ASSERT(path); |
3667 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3668 | path_len = strlen(path); |
3669 | lttng_dynamic_buffer_init(&file_path); | |
3670 | if (path_len >= LTTNG_PATH_MAX) { | |
3671 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3672 | path, path_len, LTTNG_PATH_MAX); | |
3673 | ret = -LTTNG_ERR_INVALID; | |
3674 | goto end; | |
3675 | } | |
dcf266c0 | 3676 | |
4af16958 DG |
3677 | directory = opendir(path); |
3678 | if (!directory) { | |
11143783 DG |
3679 | switch (errno) { |
3680 | case ENOTDIR: | |
0f0a81b5 DG |
3681 | /* Try the file loading. */ |
3682 | break; | |
11143783 DG |
3683 | case ENOENT: |
3684 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3685 | goto end; | |
3686 | default: | |
0f0a81b5 DG |
3687 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3688 | goto end; | |
4af16958 | 3689 | } |
dcf266c0 | 3690 | } |
4af16958 | 3691 | if (directory) { |
cce35f91 | 3692 | size_t file_path_root_len; |
dcf266c0 | 3693 | |
cce35f91 JG |
3694 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3695 | LTTNG_PATH_MAX); | |
3696 | if (ret) { | |
3697 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3698 | goto end; |
3699 | } | |
3700 | ||
cce35f91 JG |
3701 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3702 | if (ret) { | |
dcf266c0 | 3703 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3704 | goto end; |
3705 | } | |
3706 | ||
cce35f91 JG |
3707 | if (file_path.data[file_path.size - 1] != '/') { |
3708 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3709 | if (ret) { | |
3710 | ret = -LTTNG_ERR_NOMEM; | |
3711 | goto end; | |
3712 | } | |
dcf266c0 | 3713 | } |
cce35f91 | 3714 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3715 | |
3716 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3717 | for (;;) { |
3718 | size_t file_name_len; | |
3719 | struct dirent *result; | |
3720 | ||
3721 | /* | |
3722 | * When the end of the directory stream is reached, NULL | |
3723 | * is returned and errno is kept unchanged. When an | |
3724 | * error occurs, NULL is returned and errno is set | |
3725 | * accordingly. To distinguish between the two, set | |
3726 | * errno to zero before calling readdir(). | |
3727 | * | |
3728 | * On success, readdir() returns a pointer to a dirent | |
3729 | * structure. This structure may be statically | |
3730 | * allocated, do not attempt to free(3) it. | |
3731 | */ | |
3732 | errno = 0; | |
3733 | result = readdir(directory); | |
3734 | ||
ff86d8d0 | 3735 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3736 | if (!result) { |
3737 | if (errno) { | |
3738 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3739 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3740 | goto end; | |
3741 | } | |
3742 | break; | |
3743 | } | |
3744 | ||
3745 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3746 | |
3747 | if (file_name_len <= | |
3748 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3749 | continue; | |
3750 | } | |
3751 | ||
cce35f91 JG |
3752 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3753 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3754 | result->d_name, | |
3755 | /* +1 to account for NULL terminator. */ | |
3756 | file_path.size + file_name_len + 1, | |
3757 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3758 | continue; |
3759 | } | |
3760 | ||
cce35f91 | 3761 | /* Does the file end with .lttng? */ |
dcf266c0 | 3762 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3763 | result->d_name + file_name_len - sizeof( |
3764 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3765 | continue; |
3766 | } | |
3767 | ||
cce35f91 JG |
3768 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3769 | file_name_len + 1); | |
3770 | if (ret) { | |
3771 | ret = -LTTNG_ERR_NOMEM; | |
3772 | goto end; | |
3773 | } | |
dcf266c0 | 3774 | |
cce35f91 | 3775 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3776 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3777 | if (session_name && |
3778 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3779 | session_found = 1; |
3780 | break; | |
3781 | } | |
55c9e7ca JR |
3782 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3783 | goto end; | |
3784 | } | |
cce35f91 JG |
3785 | /* |
3786 | * Reset the buffer's size to the location of the | |
3787 | * path's trailing '/'. | |
3788 | */ | |
3789 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3790 | file_path_root_len); | |
3791 | if (ret) { | |
3792 | ret = -LTTNG_ERR_UNK; | |
3793 | goto end; | |
3794 | } | |
dcf266c0 | 3795 | } |
dcf266c0 JG |
3796 | } else { |
3797 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3798 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3799 | if (ret) { |
3800 | goto end; | |
dcf266c0 | 3801 | } |
55c9e7ca | 3802 | session_found = 1; |
dcf266c0 JG |
3803 | } |
3804 | ||
55c9e7ca | 3805 | ret = 0; |
dcf266c0 JG |
3806 | end: |
3807 | if (directory) { | |
3808 | if (closedir(directory)) { | |
3809 | PERROR("closedir"); | |
3810 | } | |
3811 | } | |
55c9e7ca JR |
3812 | if (!ret && !session_found) { |
3813 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3814 | } |
cce35f91 | 3815 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3816 | return ret; |
3817 | } | |
3818 | ||
ab38c13f DG |
3819 | /* |
3820 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3821 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3822 | */ |
3823 | static int validate_path_creds(const char *path) | |
3824 | { | |
3825 | int ret, uid = getuid(); | |
3826 | struct stat buf; | |
3827 | ||
a0377dfe | 3828 | LTTNG_ASSERT(path); |
ab38c13f | 3829 | |
cf53c06d | 3830 | if (uid == 0) { |
ab38c13f DG |
3831 | goto valid; |
3832 | } | |
3833 | ||
3834 | ret = stat(path, &buf); | |
3835 | if (ret < 0) { | |
3836 | if (errno != ENOENT) { | |
3837 | PERROR("stat"); | |
3838 | } | |
ab38c13f DG |
3839 | goto valid; |
3840 | } | |
3841 | ||
3842 | if (buf.st_uid != uid) { | |
3843 | goto invalid; | |
3844 | } | |
3845 | ||
3846 | valid: | |
ab38c13f | 3847 | return 1; |
cf53c06d DG |
3848 | invalid: |
3849 | return 0; | |
ab38c13f DG |
3850 | } |
3851 | ||
dcf266c0 | 3852 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
3853 | int overwrite, unsigned int autoload, |
3854 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3855 | { |
3856 | int ret; | |
6c66fa0f | 3857 | bool session_loaded = false; |
cf53c06d | 3858 | const char *path_ptr = NULL; |
1c9a0b0e | 3859 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3860 | |
3861 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3862 | if (ret) { | |
3863 | goto end; | |
3864 | } | |
3865 | ||
3866 | if (!path) { | |
4f00620d | 3867 | const char *home_path; |
ab38c13f DG |
3868 | const char *sys_path; |
3869 | ||
dcf266c0 | 3870 | /* Try home path */ |
ab38c13f | 3871 | home_path = utils_get_home_dir(); |
dcf266c0 | 3872 | if (home_path) { |
db8196db | 3873 | char path_buf[PATH_MAX]; |
dcf266c0 | 3874 | |
d4fcf703 DG |
3875 | /* |
3876 | * Try user session configuration path. Ignore error here so we can | |
3877 | * continue loading the system wide sessions. | |
3878 | */ | |
ab38c13f | 3879 | if (autoload) { |
db8196db SM |
3880 | ret = snprintf(path_buf, sizeof(path_buf), |
3881 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3882 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3883 | home_path); | |
cf53c06d DG |
3884 | if (ret < 0) { |
3885 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3886 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3887 | goto end; |
3888 | } | |
3889 | ||
3890 | /* | |
3891 | * Credentials are only validated for the autoload in order to | |
3892 | * avoid any user session daemon to try to load kernel sessions | |
3893 | * automatically and failing all the times. | |
3894 | */ | |
db8196db | 3895 | ret = validate_path_creds(path_buf); |
cf53c06d | 3896 | if (ret) { |
db8196db | 3897 | path_ptr = path_buf; |
cf53c06d | 3898 | } |
ab38c13f | 3899 | } else { |
db8196db SM |
3900 | ret = snprintf(path_buf, sizeof(path_buf), |
3901 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3902 | home_path); | |
cf53c06d DG |
3903 | if (ret < 0) { |
3904 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3905 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3906 | goto end; |
3907 | } | |
db8196db | 3908 | path_ptr = path_buf; |
ab38c13f | 3909 | } |
cf53c06d DG |
3910 | if (path_ptr) { |
3911 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3912 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3913 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3914 | goto end; | |
3915 | } | |
3916 | /* | |
3917 | * Continue even if the session was found since we have to try | |
3918 | * the system wide sessions. | |
3919 | */ | |
6c66fa0f | 3920 | session_loaded = true; |
ab38c13f | 3921 | } |
d4fcf703 | 3922 | } |
ab38c13f | 3923 | |
cf53c06d DG |
3924 | /* Reset path pointer for the system wide dir. */ |
3925 | path_ptr = NULL; | |
3926 | ||
d4fcf703 DG |
3927 | /* Try system wide configuration directory. */ |
3928 | if (autoload) { | |
3929 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3930 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3931 | ret = validate_path_creds(sys_path); |
3932 | if (ret) { | |
3933 | path_ptr = sys_path; | |
3934 | } | |
d4fcf703 | 3935 | } else { |
cf53c06d DG |
3936 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3937 | path_ptr = sys_path; | |
d4fcf703 DG |
3938 | } |
3939 | ||
cf53c06d DG |
3940 | if (path_ptr) { |
3941 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3942 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3943 | if (!ret) { |
3944 | session_loaded = true; | |
3945 | } | |
55c9e7ca JR |
3946 | } else { |
3947 | ret = 0; | |
dcf266c0 JG |
3948 | } |
3949 | } else { | |
3950 | ret = access(path, F_OK); | |
3951 | if (ret < 0) { | |
3952 | PERROR("access"); | |
3953 | switch (errno) { | |
3954 | case ENOENT: | |
3955 | ret = -LTTNG_ERR_INVALID; | |
3956 | WARN("Session configuration path does not exist."); | |
3957 | break; | |
3958 | case EACCES: | |
3959 | ret = -LTTNG_ERR_EPERM; | |
3960 | break; | |
3961 | default: | |
3962 | ret = -LTTNG_ERR_UNK; | |
3963 | break; | |
3964 | } | |
3965 | goto end; | |
3966 | } | |
3967 | ||
3968 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3969 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3970 | } |
3971 | end: | |
3972 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3973 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3974 | /* | |
3975 | * Don't report an error if no sessions are found when called | |
3976 | * without a session_name or a search path. | |
3977 | */ | |
3978 | ret = 0; | |
3979 | } | |
6c66fa0f JG |
3980 | |
3981 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3982 | /* A matching session was found in one of the search paths. */ | |
3983 | ret = 0; | |
3984 | } | |
dcf266c0 JG |
3985 | return ret; |
3986 | } | |
56766c75 JG |
3987 | |
3988 | static | |
3989 | void __attribute__((destructor)) session_config_exit(void) | |
3990 | { | |
3991 | xmlCleanupParser(); | |
3992 | } |