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 | |
fbd987c9 | 230 | /* Deprecated symbols */ |
3afa94ae | 231 | LTTNG_EXPORT const char *config_element_perf; |
fbd987c9 | 232 | |
d7b645e2 JR |
233 | enum process_event_node_phase { |
234 | CREATION = 0, | |
235 | ENABLE = 1, | |
236 | }; | |
237 | ||
f1494934 | 238 | namespace { |
dcf266c0 JG |
239 | struct consumer_output { |
240 | int enabled; | |
241 | char *path; | |
242 | char *control_uri; | |
243 | char *data_uri; | |
244 | }; | |
f1494934 | 245 | } /* namespace */ |
dcf266c0 | 246 | |
36f2332b JG |
247 | /* |
248 | * Returns a xmlChar string which must be released using xmlFree(). | |
249 | */ | |
250 | static xmlChar *encode_string(const char *in_str) | |
251 | { | |
252 | xmlChar *out_str = NULL; | |
253 | xmlCharEncodingHandlerPtr handler; | |
254 | int out_len, ret, in_len; | |
255 | ||
a0377dfe | 256 | LTTNG_ASSERT(in_str); |
36f2332b JG |
257 | |
258 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
259 | if (!handler) { | |
260 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
261 | goto end; | |
262 | } | |
263 | ||
264 | in_len = strlen(in_str); | |
265 | /* | |
f76d886f JG |
266 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
267 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 268 | */ |
f76d886f | 269 | out_len = (in_len * 4) + 1; |
3afa94ae | 270 | out_str = (xmlChar *) xmlMalloc(out_len); |
36f2332b JG |
271 | if (!out_str) { |
272 | goto end; | |
273 | } | |
274 | ||
275 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
276 | if (ret < 0) { | |
277 | xmlFree(out_str); | |
278 | out_str = NULL; | |
279 | goto end; | |
280 | } | |
281 | ||
282 | /* out_len is now the size of out_str */ | |
283 | out_str[out_len] = '\0'; | |
284 | end: | |
285 | return out_str; | |
286 | } | |
287 | ||
705bb62f | 288 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
289 | { |
290 | int ret; | |
291 | struct config_writer *writer; | |
292 | xmlOutputBufferPtr buffer; | |
293 | ||
64803277 | 294 | writer = zmalloc<config_writer>(); |
36f2332b JG |
295 | if (!writer) { |
296 | PERROR("zmalloc config_writer_create"); | |
297 | goto end; | |
298 | } | |
299 | ||
300 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
301 | if (!buffer) { | |
302 | goto error_destroy; | |
303 | } | |
304 | ||
305 | writer->writer = xmlNewTextWriter(buffer); | |
306 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
307 | config_xml_encoding, NULL); | |
308 | if (ret < 0) { | |
309 | goto error_destroy; | |
310 | } | |
311 | ||
312 | ret = xmlTextWriterSetIndentString(writer->writer, | |
313 | BAD_CAST config_xml_indent_string); | |
705bb62f | 314 | if (ret) { |
36f2332b JG |
315 | goto error_destroy; |
316 | } | |
317 | ||
705bb62f JRJ |
318 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
319 | if (ret) { | |
36f2332b JG |
320 | goto error_destroy; |
321 | } | |
322 | ||
323 | end: | |
324 | return writer; | |
325 | error_destroy: | |
326 | config_writer_destroy(writer); | |
327 | return NULL; | |
328 | } | |
329 | ||
36f2332b JG |
330 | int config_writer_destroy(struct config_writer *writer) |
331 | { | |
332 | int ret = 0; | |
333 | ||
334 | if (!writer) { | |
335 | ret = -EINVAL; | |
336 | goto end; | |
337 | } | |
338 | ||
339 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
340 | WARN("Could not close XML document"); | |
341 | ret = -EIO; | |
342 | } | |
343 | ||
344 | if (writer->writer) { | |
345 | xmlFreeTextWriter(writer->writer); | |
346 | } | |
347 | ||
348 | free(writer); | |
349 | end: | |
350 | return ret; | |
351 | } | |
352 | ||
36f2332b JG |
353 | int config_writer_open_element(struct config_writer *writer, |
354 | const char *element_name) | |
355 | { | |
356 | int ret; | |
357 | xmlChar *encoded_element_name; | |
358 | ||
359 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
360 | ret = -1; | |
361 | goto end; | |
362 | } | |
363 | ||
364 | encoded_element_name = encode_string(element_name); | |
365 | if (!encoded_element_name) { | |
366 | ret = -1; | |
367 | goto end; | |
368 | } | |
369 | ||
370 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
371 | xmlFree(encoded_element_name); | |
372 | end: | |
28676a1d | 373 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
374 | } |
375 | ||
e10b6a1c JG |
376 | int config_writer_write_attribute(struct config_writer *writer, |
377 | const char *name, const char *value) | |
378 | { | |
379 | int ret; | |
380 | xmlChar *encoded_name = NULL; | |
381 | xmlChar *encoded_value = NULL; | |
382 | ||
383 | if (!writer || !writer->writer || !name || !name[0]) { | |
384 | ret = -1; | |
385 | goto end; | |
386 | } | |
387 | ||
388 | encoded_name = encode_string(name); | |
389 | if (!encoded_name) { | |
390 | ret = -1; | |
391 | goto end; | |
392 | } | |
393 | ||
394 | encoded_value = encode_string(value); | |
395 | if (!encoded_value) { | |
396 | ret = -1; | |
397 | goto end; | |
398 | } | |
399 | ||
400 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
401 | encoded_value); | |
402 | end: | |
403 | xmlFree(encoded_name); | |
404 | xmlFree(encoded_value); | |
405 | return ret >= 0 ? 0 : ret; | |
406 | } | |
407 | ||
36f2332b JG |
408 | int config_writer_close_element(struct config_writer *writer) |
409 | { | |
410 | int ret; | |
411 | ||
412 | if (!writer || !writer->writer) { | |
413 | ret = -1; | |
414 | goto end; | |
415 | } | |
416 | ||
417 | ret = xmlTextWriterEndElement(writer->writer); | |
418 | end: | |
28676a1d | 419 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
420 | } |
421 | ||
36f2332b JG |
422 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
423 | const char *element_name, uint64_t value) | |
424 | { | |
425 | int ret; | |
426 | xmlChar *encoded_element_name; | |
427 | ||
428 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
429 | ret = -1; | |
430 | goto end; | |
431 | } | |
432 | ||
433 | encoded_element_name = encode_string(element_name); | |
434 | if (!encoded_element_name) { | |
435 | ret = -1; | |
436 | goto end; | |
437 | } | |
438 | ||
439 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
440 | encoded_element_name, "%" PRIu64, value); | |
441 | xmlFree(encoded_element_name); | |
442 | end: | |
28676a1d | 443 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
444 | } |
445 | ||
36f2332b JG |
446 | int config_writer_write_element_signed_int(struct config_writer *writer, |
447 | const char *element_name, int64_t value) | |
448 | { | |
449 | int ret; | |
450 | xmlChar *encoded_element_name; | |
451 | ||
452 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
453 | ret = -1; | |
454 | goto end; | |
455 | } | |
456 | ||
457 | encoded_element_name = encode_string(element_name); | |
458 | if (!encoded_element_name) { | |
459 | ret = -1; | |
460 | goto end; | |
461 | } | |
462 | ||
463 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
464 | encoded_element_name, "%" PRIi64, value); | |
465 | xmlFree(encoded_element_name); | |
466 | end: | |
28676a1d | 467 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
468 | } |
469 | ||
36f2332b JG |
470 | int config_writer_write_element_bool(struct config_writer *writer, |
471 | const char *element_name, int value) | |
472 | { | |
473 | return config_writer_write_element_string(writer, element_name, | |
474 | value ? config_xml_true : config_xml_false); | |
475 | } | |
476 | ||
2b166400 JR |
477 | int config_writer_write_element_double(struct config_writer *writer, |
478 | const char *element_name, | |
479 | double value) | |
480 | { | |
481 | int ret; | |
482 | xmlChar *encoded_element_name; | |
483 | ||
484 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
485 | ret = -1; | |
486 | goto end; | |
487 | } | |
488 | ||
489 | encoded_element_name = encode_string(element_name); | |
490 | if (!encoded_element_name) { | |
491 | ret = -1; | |
492 | goto end; | |
493 | } | |
494 | ||
495 | ret = xmlTextWriterWriteFormatElement( | |
496 | writer->writer, encoded_element_name, "%f", value); | |
497 | xmlFree(encoded_element_name); | |
498 | end: | |
499 | return ret >= 0 ? 0 : ret; | |
500 | } | |
501 | ||
36f2332b JG |
502 | int config_writer_write_element_string(struct config_writer *writer, |
503 | const char *element_name, const char *value) | |
504 | { | |
505 | int ret; | |
506 | xmlChar *encoded_element_name = NULL; | |
507 | xmlChar *encoded_value = NULL; | |
508 | ||
509 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
510 | !value) { | |
511 | ret = -1; | |
512 | goto end; | |
513 | } | |
514 | ||
515 | encoded_element_name = encode_string(element_name); | |
516 | if (!encoded_element_name) { | |
517 | ret = -1; | |
518 | goto end; | |
519 | } | |
520 | ||
521 | encoded_value = encode_string(value); | |
522 | if (!encoded_value) { | |
523 | ret = -1; | |
524 | goto end; | |
525 | } | |
526 | ||
527 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 528 | encoded_value); |
36f2332b JG |
529 | end: |
530 | xmlFree(encoded_element_name); | |
531 | xmlFree(encoded_value); | |
28676a1d | 532 | return ret >= 0 ? 0 : ret; |
36f2332b | 533 | } |
dcf266c0 | 534 | |
d22ad5f8 | 535 | static ATTR_FORMAT_PRINTF(2, 3) |
f46376a1 | 536 | void xml_error_handler(void *ctx __attribute__((unused)), const char *format, ...) |
dcf266c0 JG |
537 | { |
538 | char *errMsg; | |
539 | va_list args; | |
540 | int ret; | |
541 | ||
542 | va_start(args, format); | |
543 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 544 | va_end(args); |
dcf266c0 JG |
545 | if (ret == -1) { |
546 | ERR("String allocation failed in xml error handler"); | |
547 | return; | |
548 | } | |
dcf266c0 JG |
549 | |
550 | fprintf(stderr, "XML Error: %s", errMsg); | |
551 | free(errMsg); | |
552 | } | |
553 | ||
554 | static | |
555 | void fini_session_config_validation_ctx( | |
556 | struct session_config_validation_ctx *ctx) | |
557 | { | |
558 | if (ctx->parser_ctx) { | |
559 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
560 | } | |
561 | ||
562 | if (ctx->schema) { | |
563 | xmlSchemaFree(ctx->schema); | |
564 | } | |
565 | ||
566 | if (ctx->schema_validation_ctx) { | |
567 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
568 | } | |
569 | ||
570 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
571 | } | |
572 | ||
54e399cb | 573 | static |
a3ecaea8 | 574 | char *get_session_config_xsd_path(void) |
54e399cb JG |
575 | { |
576 | char *xsd_path; | |
e8fa9fb0 | 577 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
578 | size_t base_path_len; |
579 | size_t max_path_len; | |
580 | ||
581 | if (!base_path) { | |
582 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
583 | } | |
584 | ||
585 | base_path_len = strlen(base_path); | |
586 | max_path_len = base_path_len + | |
587 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
64803277 | 588 | xsd_path = zmalloc<char>(max_path_len); |
54e399cb JG |
589 | if (!xsd_path) { |
590 | goto end; | |
591 | } | |
592 | ||
00a7f6f8 | 593 | strcpy(xsd_path, base_path); |
54e399cb JG |
594 | if (xsd_path[base_path_len - 1] != '/') { |
595 | xsd_path[base_path_len++] = '/'; | |
596 | } | |
597 | ||
00a7f6f8 | 598 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
599 | end: |
600 | return xsd_path; | |
601 | } | |
602 | ||
dcf266c0 JG |
603 | static |
604 | int init_session_config_validation_ctx( | |
605 | struct session_config_validation_ctx *ctx) | |
606 | { | |
607 | int ret; | |
54e399cb JG |
608 | char *xsd_path = get_session_config_xsd_path(); |
609 | ||
610 | if (!xsd_path) { | |
611 | ret = -LTTNG_ERR_NOMEM; | |
612 | goto end; | |
613 | } | |
dcf266c0 | 614 | |
54e399cb | 615 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
616 | if (!ctx->parser_ctx) { |
617 | ERR("XSD parser context creation failed"); | |
618 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
619 | goto end; | |
620 | } | |
621 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
622 | xml_error_handler, NULL); | |
623 | ||
624 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
625 | if (!ctx->schema) { | |
626 | ERR("XSD parsing failed"); | |
627 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
628 | goto end; | |
629 | } | |
630 | ||
631 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
632 | if (!ctx->schema_validation_ctx) { | |
633 | ERR("XSD validation context creation failed"); | |
634 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
635 | goto end; | |
636 | } | |
637 | ||
638 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
639 | xml_error_handler, NULL); | |
640 | ret = 0; | |
641 | ||
642 | end: | |
643 | if (ret) { | |
644 | fini_session_config_validation_ctx(ctx); | |
645 | } | |
646 | ||
54e399cb | 647 | free(xsd_path); |
dcf266c0 JG |
648 | return ret; |
649 | } | |
650 | ||
651 | static | |
652 | int parse_uint(xmlChar *str, uint64_t *val) | |
653 | { | |
654 | int ret; | |
655 | char *endptr; | |
656 | ||
657 | if (!str || !val) { | |
658 | ret = -1; | |
659 | goto end; | |
660 | } | |
661 | ||
662 | *val = strtoull((const char *) str, &endptr, 10); | |
663 | if (!endptr || *endptr) { | |
664 | ret = -1; | |
665 | } else { | |
666 | ret = 0; | |
667 | } | |
668 | ||
669 | end: | |
670 | return ret; | |
671 | } | |
672 | ||
673 | static | |
674 | int parse_int(xmlChar *str, int64_t *val) | |
675 | { | |
676 | int ret; | |
677 | char *endptr; | |
678 | ||
679 | if (!str || !val) { | |
680 | ret = -1; | |
681 | goto end; | |
682 | } | |
683 | ||
684 | *val = strtoll((const char *) str, &endptr, 10); | |
685 | if (!endptr || *endptr) { | |
686 | ret = -1; | |
687 | } else { | |
688 | ret = 0; | |
689 | } | |
690 | ||
691 | end: | |
692 | return ret; | |
693 | } | |
694 | ||
695 | static | |
696 | int parse_bool(xmlChar *str, int *val) | |
697 | { | |
698 | int ret = 0; | |
699 | ||
700 | if (!str || !val) { | |
701 | ret = -1; | |
702 | goto end; | |
703 | } | |
704 | ||
47945b17 SM |
705 | if (!strcmp((const char *) str, config_xml_true) || |
706 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 707 | *val = 1; |
47945b17 SM |
708 | } else if (!strcmp((const char *) str, config_xml_false) || |
709 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
710 | *val = 0; |
711 | } else { | |
a22a57cb | 712 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
713 | (const char *) str); |
714 | ret = -1; | |
715 | } | |
716 | end: | |
717 | return ret; | |
718 | } | |
719 | ||
720 | static | |
721 | int get_domain_type(xmlChar *domain) | |
722 | { | |
723 | int ret; | |
724 | ||
725 | if (!domain) { | |
726 | goto error; | |
727 | } | |
728 | ||
729 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
730 | ret = LTTNG_DOMAIN_KERNEL; | |
731 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
732 | ret = LTTNG_DOMAIN_UST; | |
733 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
734 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
735 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
736 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
737 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
738 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
739 | } else { |
740 | goto error; | |
741 | } | |
742 | ||
743 | return ret; | |
744 | error: | |
745 | return -1; | |
746 | } | |
747 | ||
748 | static | |
749 | int get_buffer_type(xmlChar *buffer_type) | |
750 | { | |
751 | int ret; | |
752 | ||
753 | if (!buffer_type) { | |
754 | goto error; | |
755 | } | |
756 | ||
757 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
758 | ret = LTTNG_BUFFER_GLOBAL; | |
759 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
760 | ret = LTTNG_BUFFER_PER_UID; | |
761 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
762 | ret = LTTNG_BUFFER_PER_PID; | |
763 | } else { | |
764 | goto error; | |
765 | } | |
766 | ||
767 | return ret; | |
768 | error: | |
769 | return -1; | |
770 | } | |
771 | ||
772 | static | |
773 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
774 | { | |
775 | int ret; | |
776 | ||
777 | if (!overwrite_mode) { | |
778 | goto error; | |
779 | } | |
780 | ||
781 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
782 | ret = 1; | |
783 | } else if (!strcmp((char *) overwrite_mode, | |
784 | config_overwrite_mode_discard)) { | |
785 | ret = 0; | |
786 | } else { | |
787 | goto error; | |
788 | } | |
789 | ||
790 | return ret; | |
791 | error: | |
792 | return -1; | |
793 | } | |
794 | ||
795 | static | |
796 | int get_output_type(xmlChar *output_type) | |
797 | { | |
798 | int ret; | |
799 | ||
800 | if (!output_type) { | |
801 | goto error; | |
802 | } | |
803 | ||
804 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
805 | ret = LTTNG_EVENT_MMAP; | |
806 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
807 | ret = LTTNG_EVENT_SPLICE; | |
808 | } else { | |
809 | goto error; | |
810 | } | |
811 | ||
812 | return ret; | |
813 | error: | |
814 | return -1; | |
815 | } | |
816 | ||
817 | static | |
818 | int get_event_type(xmlChar *event_type) | |
819 | { | |
820 | int ret; | |
821 | ||
822 | if (!event_type) { | |
823 | goto error; | |
824 | } | |
825 | ||
826 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
827 | ret = LTTNG_EVENT_ALL; | |
828 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
829 | ret = LTTNG_EVENT_TRACEPOINT; | |
830 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
831 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
832 | } else if (!strcmp((char *) event_type, |
833 | config_event_type_userspace_probe)) { | |
834 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
835 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
836 | ret = LTTNG_EVENT_FUNCTION; | |
837 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 838 | config_event_type_function_entry)) { |
dcf266c0 JG |
839 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
840 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
841 | ret = LTTNG_EVENT_NOOP; | |
842 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
843 | ret = LTTNG_EVENT_SYSCALL; | |
844 | } else { | |
845 | goto error; | |
846 | } | |
847 | ||
848 | return ret; | |
849 | error: | |
850 | return -1; | |
851 | } | |
852 | ||
853 | static | |
854 | int get_loglevel_type(xmlChar *loglevel_type) | |
855 | { | |
856 | int ret; | |
857 | ||
858 | if (!loglevel_type) { | |
859 | goto error; | |
860 | } | |
861 | ||
862 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
863 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
864 | } else if (!strcmp((char *) loglevel_type, | |
865 | config_loglevel_type_range)) { | |
866 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
867 | } else if (!strcmp((char *) loglevel_type, | |
868 | config_loglevel_type_single)) { | |
869 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
870 | } else { | |
871 | goto error; | |
872 | } | |
873 | ||
874 | return ret; | |
875 | error: | |
876 | return -1; | |
877 | } | |
878 | ||
879 | /* | |
880 | * Return the context type or -1 on error. | |
881 | */ | |
882 | static | |
883 | int get_context_type(xmlChar *context_type) | |
884 | { | |
885 | int ret; | |
886 | ||
887 | if (!context_type) { | |
888 | goto error; | |
889 | } | |
890 | ||
891 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
892 | ret = LTTNG_EVENT_CONTEXT_PID; | |
893 | } else if (!strcmp((char *) context_type, | |
894 | config_event_context_procname)) { | |
895 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
896 | } else if (!strcmp((char *) context_type, | |
897 | config_event_context_prio)) { | |
898 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
899 | } else if (!strcmp((char *) context_type, | |
900 | config_event_context_nice)) { | |
901 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
902 | } else if (!strcmp((char *) context_type, | |
903 | config_event_context_vpid)) { | |
904 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
905 | } else if (!strcmp((char *) context_type, | |
906 | config_event_context_tid)) { | |
907 | ret = LTTNG_EVENT_CONTEXT_TID; | |
908 | } else if (!strcmp((char *) context_type, | |
909 | config_event_context_vtid)) { | |
910 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
911 | } else if (!strcmp((char *) context_type, | |
912 | config_event_context_ppid)) { | |
913 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
914 | } else if (!strcmp((char *) context_type, | |
915 | config_event_context_vppid)) { | |
916 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
917 | } else if (!strcmp((char *) context_type, | |
918 | config_event_context_pthread_id)) { | |
919 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
920 | } else if (!strcmp((char *) context_type, | |
921 | config_event_context_hostname)) { | |
922 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
923 | } else if (!strcmp((char *) context_type, | |
924 | config_event_context_ip)) { | |
925 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
926 | } else if (!strcmp((char *) context_type, |
927 | config_event_context_interruptible)) { | |
928 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
929 | } else if (!strcmp((char *) context_type, | |
930 | config_event_context_preemptible)) { | |
931 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
932 | } else if (!strcmp((char *) context_type, | |
933 | config_event_context_need_reschedule)) { | |
934 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
935 | } else if (!strcmp((char *) context_type, | |
936 | config_event_context_migratable)) { | |
937 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
938 | } else if (!strcmp((char *) context_type, |
939 | config_event_context_callstack_user)) { | |
940 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
941 | } else if (!strcmp((char *) context_type, | |
942 | config_event_context_callstack_kernel)) { | |
943 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
944 | } else if (!strcmp((char *) context_type, |
945 | config_event_context_cgroup_ns)) { | |
946 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
947 | } else if (!strcmp((char *) context_type, | |
948 | config_event_context_ipc_ns)) { | |
949 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
950 | } else if (!strcmp((char *) context_type, | |
951 | config_event_context_mnt_ns)) { | |
952 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
953 | } else if (!strcmp((char *) context_type, | |
954 | config_event_context_net_ns)) { | |
955 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
956 | } else if (!strcmp((char *) context_type, | |
957 | config_event_context_pid_ns)) { | |
958 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
959 | } else if (!strcmp((char *) context_type, |
960 | config_event_context_time_ns)) { | |
961 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
962 | } else if (!strcmp((char *) context_type, |
963 | config_event_context_user_ns)) { | |
964 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
965 | } else if (!strcmp((char *) context_type, | |
966 | config_event_context_uts_ns)) { | |
967 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
968 | } else if (!strcmp((char *) context_type, |
969 | config_event_context_uid)) { | |
970 | ret = LTTNG_EVENT_CONTEXT_UID; | |
971 | } else if (!strcmp((char *) context_type, | |
972 | config_event_context_euid)) { | |
973 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
974 | } else if (!strcmp((char *) context_type, | |
975 | config_event_context_suid)) { | |
976 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
977 | } else if (!strcmp((char *) context_type, | |
978 | config_event_context_gid)) { | |
979 | ret = LTTNG_EVENT_CONTEXT_GID; | |
980 | } else if (!strcmp((char *) context_type, | |
981 | config_event_context_egid)) { | |
982 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
983 | } else if (!strcmp((char *) context_type, | |
984 | config_event_context_sgid)) { | |
985 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
986 | } else if (!strcmp((char *) context_type, | |
987 | config_event_context_vuid)) { | |
988 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
989 | } else if (!strcmp((char *) context_type, | |
990 | config_event_context_veuid)) { | |
991 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
992 | } else if (!strcmp((char *) context_type, | |
993 | config_event_context_vsuid)) { | |
994 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
995 | } else if (!strcmp((char *) context_type, | |
996 | config_event_context_vgid)) { | |
997 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
998 | } else if (!strcmp((char *) context_type, | |
999 | config_event_context_vegid)) { | |
1000 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1001 | } else if (!strcmp((char *) context_type, | |
1002 | config_event_context_vsgid)) { | |
1003 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1004 | } else { |
1005 | goto error; | |
1006 | } | |
1007 | ||
1008 | return ret; | |
1009 | error: | |
1010 | return -1; | |
1011 | } | |
1012 | ||
1013 | static | |
1014 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1015 | { | |
1016 | int ret; | |
1017 | xmlNodePtr node; | |
1018 | ||
1019 | for (node = xmlFirstElementChild(domain_node); node; | |
1020 | node = xmlNextElementSibling(node)) { | |
1021 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1022 | /* domain type */ | |
1023 | xmlChar *node_content = xmlNodeGetContent(node); | |
1024 | if (!node_content) { | |
1025 | ret = -LTTNG_ERR_NOMEM; | |
1026 | goto end; | |
1027 | } | |
1028 | ||
1029 | ret = get_domain_type(node_content); | |
1030 | free(node_content); | |
1031 | if (ret < 0) { | |
1032 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1033 | goto end; | |
1034 | } | |
1035 | ||
3afa94ae | 1036 | domain->type = (lttng_domain_type) ret; |
dcf266c0 JG |
1037 | } else if (!strcmp((const char *) node->name, |
1038 | config_element_buffer_type)) { | |
1039 | /* buffer type */ | |
1040 | xmlChar *node_content = xmlNodeGetContent(node); | |
1041 | if (!node_content) { | |
1042 | ret = -LTTNG_ERR_NOMEM; | |
1043 | goto end; | |
1044 | } | |
1045 | ||
1046 | ret = get_buffer_type(node_content); | |
1047 | free(node_content); | |
1048 | if (ret < 0) { | |
1049 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1050 | goto end; | |
1051 | } | |
1052 | ||
3afa94ae | 1053 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
1054 | } |
1055 | } | |
1056 | ret = 0; | |
1057 | end: | |
1058 | return ret; | |
1059 | } | |
1060 | ||
1061 | static | |
1062 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1063 | char **data_uri) | |
1064 | { | |
1065 | xmlNodePtr node; | |
1066 | ||
1067 | for (node = xmlFirstElementChild(net_output_node); node; | |
1068 | node = xmlNextElementSibling(node)) { | |
1069 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1070 | /* control_uri */ | |
1071 | *control_uri = (char *) xmlNodeGetContent(node); | |
1072 | if (!*control_uri) { | |
1073 | break; | |
1074 | } | |
1075 | } else { | |
1076 | /* data_uri */ | |
1077 | *data_uri = (char *) xmlNodeGetContent(node); | |
1078 | if (!*data_uri) { | |
1079 | break; | |
1080 | } | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1085 | } | |
1086 | ||
1087 | static | |
1088 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1089 | struct consumer_output *output) | |
1090 | { | |
1091 | int ret; | |
1092 | xmlNodePtr node; | |
1093 | ||
a0377dfe | 1094 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1095 | |
1096 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1097 | node = xmlNextElementSibling(node)) { | |
1098 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1099 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1100 | ||
1101 | /* enabled */ | |
1102 | if (!enabled_str) { | |
1103 | ret = -LTTNG_ERR_NOMEM; | |
1104 | goto end; | |
1105 | } | |
1106 | ||
1107 | ret = parse_bool(enabled_str, &output->enabled); | |
1108 | free(enabled_str); | |
1109 | if (ret) { | |
1110 | goto end; | |
1111 | } | |
1112 | } else { | |
1113 | xmlNodePtr output_type_node; | |
1114 | ||
1115 | /* destination */ | |
1116 | output_type_node = xmlFirstElementChild(node); | |
1117 | if (!output_type_node) { | |
1118 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1119 | goto end; | |
1120 | } | |
1121 | ||
1122 | if (!strcmp((const char *) output_type_node->name, | |
1123 | config_element_path)) { | |
1124 | /* path */ | |
1125 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1126 | if (!output->path) { | |
1127 | ret = -LTTNG_ERR_NOMEM; | |
1128 | goto end; | |
1129 | } | |
1130 | } else { | |
1131 | /* net_output */ | |
1132 | ret = get_net_output_uris(output_type_node, | |
1133 | &output->control_uri, &output->data_uri); | |
1134 | if (ret) { | |
1135 | goto end; | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | ret = 0; | |
1141 | ||
1142 | end: | |
1143 | if (ret) { | |
1144 | free(output->path); | |
1145 | free(output->control_uri); | |
1146 | free(output->data_uri); | |
1147 | memset(output, 0, sizeof(struct consumer_output)); | |
1148 | } | |
1149 | return ret; | |
1150 | } | |
1151 | ||
1152 | static | |
95681498 JG |
1153 | int create_session_net_output(const char *name, const char *control_uri, |
1154 | const char *data_uri) | |
dcf266c0 JG |
1155 | { |
1156 | int ret; | |
1157 | struct lttng_handle *handle; | |
1158 | const char *uri = NULL; | |
1159 | ||
a0377dfe | 1160 | LTTNG_ASSERT(name); |
dcf266c0 | 1161 | |
95681498 | 1162 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1163 | if (!handle) { |
1164 | ret = -LTTNG_ERR_NOMEM; | |
1165 | goto end; | |
1166 | } | |
1167 | ||
1168 | if (!control_uri || !data_uri) { | |
1169 | uri = control_uri ? control_uri : data_uri; | |
1170 | control_uri = uri; | |
1171 | data_uri = uri; | |
1172 | } | |
1173 | ||
1174 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1175 | lttng_destroy_handle(handle); | |
1176 | end: | |
1177 | return ret; | |
1178 | } | |
1179 | ||
1180 | static | |
1b08cbce JR |
1181 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1182 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1183 | { |
1184 | int ret; | |
1185 | xmlNodePtr node = NULL; | |
1186 | xmlNodePtr snapshot_output_list_node; | |
1187 | xmlNodePtr snapshot_output_node; | |
1188 | ||
a0377dfe | 1189 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
1190 | |
1191 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1192 | if (ret) { | |
1193 | goto end; | |
1194 | } | |
1195 | ||
1196 | if (!output_node) { | |
1197 | goto end; | |
1198 | } | |
1199 | ||
1200 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1201 | ||
1202 | /* Parse and create snapshot outputs */ | |
1203 | ||
1204 | for (snapshot_output_node = | |
1205 | xmlFirstElementChild(snapshot_output_list_node); | |
1206 | snapshot_output_node; snapshot_output_node = | |
1207 | xmlNextElementSibling(snapshot_output_node)) { | |
1208 | char *name = NULL; | |
1209 | uint64_t max_size = UINT64_MAX; | |
1c9a0b0e | 1210 | struct consumer_output output = {}; |
dcf266c0 | 1211 | struct lttng_snapshot_output *snapshot_output = NULL; |
1b08cbce JR |
1212 | const char *control_uri = NULL; |
1213 | const char *data_uri = NULL; | |
1214 | const char *path = NULL; | |
dcf266c0 JG |
1215 | |
1216 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1217 | node = xmlNextElementSibling(node)) { | |
1218 | if (!strcmp((const char *) node->name, | |
1219 | config_element_name)) { | |
1220 | /* name */ | |
1221 | name = (char *) xmlNodeGetContent(node); | |
1222 | if (!name) { | |
1223 | ret = -LTTNG_ERR_NOMEM; | |
1224 | goto error_snapshot_output; | |
1225 | } | |
1226 | } else if (!strcmp((const char *) node->name, | |
1227 | config_element_max_size)) { | |
1228 | xmlChar *content = xmlNodeGetContent(node); | |
1229 | ||
1230 | /* max_size */ | |
1231 | if (!content) { | |
1232 | ret = -LTTNG_ERR_NOMEM; | |
1233 | goto error_snapshot_output; | |
1234 | } | |
1235 | ret = parse_uint(content, &max_size); | |
1236 | free(content); | |
1237 | if (ret) { | |
1238 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1239 | goto error_snapshot_output; | |
1240 | } | |
1241 | } else { | |
1242 | /* consumer_output */ | |
1243 | ret = process_consumer_output(node, &output); | |
1244 | if (ret) { | |
1245 | goto error_snapshot_output; | |
1246 | } | |
1247 | } | |
1248 | } | |
1249 | ||
21a3f144 JR |
1250 | control_uri = output.control_uri; |
1251 | data_uri = output.data_uri; | |
1252 | path = output.path; | |
1253 | ||
1b08cbce JR |
1254 | if (overrides) { |
1255 | if (overrides->path_url) { | |
1b08cbce | 1256 | path = overrides->path_url; |
21a3f144 JR |
1257 | /* Control/data_uri are null */ |
1258 | control_uri = NULL; | |
1259 | data_uri = NULL; | |
1b08cbce JR |
1260 | } else { |
1261 | if (overrides->ctrl_url) { | |
1b08cbce | 1262 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1263 | /* path is null */ |
1264 | path = NULL; | |
1b08cbce JR |
1265 | } |
1266 | if (overrides->data_url) { | |
1b08cbce | 1267 | data_uri = overrides->data_url; |
21a3f144 JR |
1268 | /* path is null */ |
1269 | path = NULL; | |
1b08cbce JR |
1270 | } |
1271 | } | |
1b08cbce JR |
1272 | } |
1273 | ||
dcf266c0 JG |
1274 | snapshot_output = lttng_snapshot_output_create(); |
1275 | if (!snapshot_output) { | |
1276 | ret = -LTTNG_ERR_NOMEM; | |
1277 | goto error_snapshot_output; | |
1278 | } | |
1279 | ||
1280 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1281 | if (ret) { | |
1282 | goto error_snapshot_output; | |
1283 | } | |
1284 | ||
1285 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1286 | if (ret) { | |
1287 | goto error_snapshot_output; | |
1288 | } | |
1289 | ||
1b08cbce JR |
1290 | if (path) { |
1291 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1292 | snapshot_output); |
1293 | if (ret) { | |
1294 | goto error_snapshot_output; | |
1295 | } | |
1296 | } else { | |
1b08cbce JR |
1297 | if (control_uri) { |
1298 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1299 | snapshot_output); |
1300 | if (ret) { | |
1301 | goto error_snapshot_output; | |
1302 | } | |
1303 | } | |
1304 | ||
1b08cbce JR |
1305 | if (data_uri) { |
1306 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1307 | snapshot_output); |
1308 | if (ret) { | |
1309 | goto error_snapshot_output; | |
1310 | } | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1315 | error_snapshot_output: | |
1316 | free(name); | |
1317 | free(output.path); | |
1318 | free(output.control_uri); | |
1319 | free(output.data_uri); | |
1320 | lttng_snapshot_output_destroy(snapshot_output); | |
1321 | if (ret) { | |
1322 | goto end; | |
1323 | } | |
1324 | } | |
1325 | end: | |
1326 | return ret; | |
1327 | } | |
1328 | ||
1329 | static | |
1330 | int create_session(const char *name, | |
dcf266c0 | 1331 | xmlNodePtr output_node, |
1b08cbce JR |
1332 | uint64_t live_timer_interval, |
1333 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1334 | { |
1335 | int ret; | |
1c9a0b0e | 1336 | struct consumer_output output = {}; |
dcf266c0 | 1337 | xmlNodePtr consumer_output_node; |
1b08cbce JR |
1338 | const char *control_uri = NULL; |
1339 | const char *data_uri = NULL; | |
1340 | const char *path = NULL; | |
dcf266c0 | 1341 | |
a0377dfe | 1342 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1343 | |
1344 | if (output_node) { | |
1345 | consumer_output_node = xmlFirstElementChild(output_node); | |
1346 | if (!consumer_output_node) { | |
1347 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1348 | goto end; | |
1349 | } | |
1350 | ||
1351 | if (strcmp((const char *) consumer_output_node->name, | |
1352 | config_element_consumer_output)) { | |
1353 | WARN("Invalid output type, expected %s node", | |
1354 | config_element_consumer_output); | |
1355 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1356 | goto end; | |
1357 | } | |
1358 | ||
1359 | ret = process_consumer_output(consumer_output_node, &output); | |
1360 | if (ret) { | |
1361 | goto end; | |
1362 | } | |
1363 | } | |
1364 | ||
21a3f144 JR |
1365 | control_uri = output.control_uri; |
1366 | data_uri = output.data_uri; | |
1367 | path = output.path; | |
1368 | ||
1b08cbce JR |
1369 | /* Check for override and apply them */ |
1370 | if (overrides) { | |
1371 | if (overrides->path_url) { | |
1b08cbce | 1372 | path = overrides->path_url; |
21a3f144 JR |
1373 | /* control/data_uri are null */; |
1374 | control_uri = NULL; | |
1375 | data_uri = NULL; | |
1b08cbce JR |
1376 | } else { |
1377 | if (overrides->ctrl_url) { | |
1b08cbce | 1378 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1379 | /* path is null */ |
1380 | path = NULL; | |
1b08cbce JR |
1381 | } |
1382 | if (overrides->data_url) { | |
1b08cbce | 1383 | data_uri = overrides->data_url; |
21a3f144 JR |
1384 | /* path is null */ |
1385 | path = NULL; | |
1b08cbce JR |
1386 | } |
1387 | } | |
1b08cbce JR |
1388 | } |
1389 | ||
21a3f144 | 1390 | |
1b08cbce | 1391 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1392 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1393 | goto end; | |
1394 | } | |
1395 | ||
1b08cbce | 1396 | if (control_uri || data_uri) { |
dcf266c0 JG |
1397 | /* network destination */ |
1398 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1399 | /* |
1400 | * URLs are provided for sure since the test above make sure that | |
1401 | * with a live timer the data and control URIs are provided. So, | |
1402 | * NULL is passed here and will be set right after. | |
1403 | */ | |
1404 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1405 | } else { |
1406 | ret = lttng_create_session(name, NULL); | |
1407 | } | |
1408 | if (ret) { | |
1409 | goto end; | |
1410 | } | |
1411 | ||
1b08cbce | 1412 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1413 | if (ret) { |
1414 | goto end; | |
dcf266c0 | 1415 | } |
95681498 | 1416 | |
dcf266c0 JG |
1417 | } else { |
1418 | /* either local output or no output */ | |
1b08cbce | 1419 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1420 | if (ret) { |
1421 | goto end; | |
1422 | } | |
1423 | } | |
1424 | end: | |
1425 | free(output.path); | |
1426 | free(output.control_uri); | |
1427 | free(output.data_uri); | |
1428 | return ret; | |
1429 | } | |
c1e83fb4 FD |
1430 | |
1431 | static | |
1432 | struct lttng_userspace_probe_location * | |
1433 | process_userspace_probe_function_attribute_node( | |
1434 | xmlNodePtr attribute_node) | |
1435 | { | |
c1e83fb4 | 1436 | xmlNodePtr function_attribute_node; |
717d2dba | 1437 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1438 | struct lttng_userspace_probe_location *location = NULL; |
1439 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1440 | ||
1441 | /* | |
1442 | * Process userspace probe location function attributes. The order of | |
1443 | * the fields are not guaranteed so we need to iterate over all fields | |
1444 | * and check at the end if everything we need for this location type is | |
1445 | * there. | |
1446 | */ | |
1447 | for (function_attribute_node = | |
1448 | xmlFirstElementChild(attribute_node); | |
1449 | function_attribute_node; | |
1450 | function_attribute_node = xmlNextElementSibling( | |
1451 | function_attribute_node)) { | |
1452 | /* Handle function name, binary path and lookup method. */ | |
1453 | if (!strcmp((const char *) function_attribute_node->name, | |
1454 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1455 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1456 | if (!function_name) { |
c1e83fb4 FD |
1457 | goto error; |
1458 | } | |
1459 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1460 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1461 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1462 | if (!binary_path) { |
c1e83fb4 FD |
1463 | goto error; |
1464 | } | |
1465 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1466 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1467 | char *lookup_method_name; |
c1e83fb4 | 1468 | |
717d2dba JG |
1469 | lookup_method_name = (char *) xmlNodeGetContent( |
1470 | function_attribute_node); | |
c1e83fb4 | 1471 | if (!lookup_method_name) { |
c1e83fb4 FD |
1472 | goto error; |
1473 | } | |
1474 | ||
1475 | /* | |
1476 | * function_default lookup method defaults to | |
1477 | * function_elf lookup method at the moment. | |
1478 | */ | |
1479 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1480 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1481 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1482 | if (!lookup_method) { | |
1483 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1484 | } |
1485 | } else { | |
717d2dba JG |
1486 | WARN("Unknown function lookup method"); |
1487 | } | |
1488 | ||
1489 | free(lookup_method_name); | |
1490 | if (!lookup_method) { | |
c1e83fb4 FD |
1491 | goto error; |
1492 | } | |
1493 | } else { | |
1494 | goto error; | |
1495 | } | |
1496 | ||
1497 | /* Check if all the necessary fields were found. */ | |
1498 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1499 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1500 | location = |
1501 | lttng_userspace_probe_location_function_create( | |
1502 | binary_path, function_name, | |
1503 | lookup_method); | |
717d2dba JG |
1504 | lookup_method = NULL; |
1505 | goto error; | |
c1e83fb4 FD |
1506 | } |
1507 | } | |
1508 | error: | |
717d2dba | 1509 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1510 | free(binary_path); |
1511 | free(function_name); | |
c1e83fb4 FD |
1512 | return location; |
1513 | } | |
1514 | ||
1515 | static | |
1516 | struct lttng_userspace_probe_location * | |
1517 | process_userspace_probe_tracepoint_attribute_node( | |
1518 | xmlNodePtr attribute_node) | |
1519 | { | |
c1e83fb4 | 1520 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1521 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1522 | struct lttng_userspace_probe_location *location = NULL; | |
1523 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1524 | ||
1525 | /* | |
1526 | * Process userspace probe location tracepoint attributes. The order of | |
1527 | * the fields are not guaranteed so we need to iterate over all fields | |
1528 | * and check at the end if everything we need for this location type is | |
1529 | * there. | |
1530 | */ | |
1531 | for (tracepoint_attribute_node = | |
1532 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1533 | tracepoint_attribute_node = xmlNextElementSibling( | |
1534 | tracepoint_attribute_node)) { | |
1535 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1536 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1537 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1538 | if (!probe_name) { |
c1e83fb4 FD |
1539 | goto error; |
1540 | } | |
1541 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1542 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1543 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1544 | if (!provider_name) { |
c1e83fb4 FD |
1545 | goto error; |
1546 | } | |
1547 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1548 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1549 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1550 | if (!binary_path) { |
c1e83fb4 FD |
1551 | goto error; |
1552 | } | |
1553 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1554 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1555 | char *lookup_method_name; |
c1e83fb4 | 1556 | |
717d2dba JG |
1557 | lookup_method_name = (char *) xmlNodeGetContent( |
1558 | tracepoint_attribute_node); | |
c1e83fb4 | 1559 | if (!lookup_method_name) { |
c1e83fb4 FD |
1560 | goto error; |
1561 | } | |
1562 | ||
1563 | if (!strcmp(lookup_method_name, | |
1564 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1565 | lookup_method = | |
1566 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1567 | if (!lookup_method) { | |
1568 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1569 | } |
1570 | } else { | |
717d2dba JG |
1571 | WARN("Unknown tracepoint lookup method"); |
1572 | } | |
1573 | ||
1574 | free(lookup_method_name); | |
1575 | if (!lookup_method) { | |
c1e83fb4 FD |
1576 | goto error; |
1577 | } | |
1578 | } else { | |
717d2dba | 1579 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1580 | goto error; |
1581 | } | |
1582 | ||
1583 | /* Check if all the necessary fields were found. */ | |
1584 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1585 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1586 | location = |
1587 | lttng_userspace_probe_location_tracepoint_create( | |
1588 | binary_path, provider_name, | |
1589 | probe_name, lookup_method); | |
6bd61b96 | 1590 | lookup_method = NULL; |
717d2dba | 1591 | goto error; |
c1e83fb4 FD |
1592 | } |
1593 | } | |
1594 | error: | |
717d2dba | 1595 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1596 | free(binary_path); |
c1e83fb4 | 1597 | free(provider_name); |
717d2dba | 1598 | free(probe_name); |
c1e83fb4 FD |
1599 | return location; |
1600 | } | |
1601 | ||
dcf266c0 JG |
1602 | static |
1603 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1604 | struct lttng_event_probe_attr *attr) | |
1605 | { | |
1606 | int ret; | |
1607 | ||
a0377dfe FD |
1608 | LTTNG_ASSERT(probe_attribute_node); |
1609 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1610 | |
1611 | if (!strcmp((const char *) probe_attribute_node->name, | |
1612 | config_element_address)) { | |
1613 | xmlChar *content; | |
1614 | uint64_t addr = 0; | |
1615 | ||
1616 | /* addr */ | |
1617 | content = xmlNodeGetContent(probe_attribute_node); | |
1618 | if (!content) { | |
1619 | ret = -LTTNG_ERR_NOMEM; | |
1620 | goto end; | |
1621 | } | |
1622 | ||
1623 | ret = parse_uint(content, &addr); | |
1624 | free(content); | |
1625 | if (ret) { | |
1626 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1627 | goto end; | |
1628 | } | |
1629 | ||
1630 | attr->addr = addr; | |
1631 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1632 | config_element_offset)) { | |
1633 | xmlChar *content; | |
1634 | uint64_t offset = 0; | |
1635 | ||
1636 | /* offset */ | |
1637 | content = xmlNodeGetContent(probe_attribute_node); | |
1638 | if (!content) { | |
1639 | ret = -LTTNG_ERR_NOMEM; | |
1640 | goto end; | |
1641 | } | |
1642 | ||
1643 | ret = parse_uint(content, &offset); | |
1644 | free(content); | |
1645 | if (ret) { | |
1646 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1647 | goto end; | |
1648 | } | |
1649 | ||
1650 | attr->offset = offset; | |
1651 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1652 | config_element_symbol_name)) { | |
1653 | xmlChar *content; | |
dcf266c0 JG |
1654 | |
1655 | /* symbol_name */ | |
1656 | content = xmlNodeGetContent(probe_attribute_node); | |
1657 | if (!content) { | |
1658 | ret = -LTTNG_ERR_NOMEM; | |
1659 | goto end; | |
1660 | } | |
1661 | ||
d2e67842 JG |
1662 | ret = lttng_strncpy(attr->symbol_name, |
1663 | (const char *) content, | |
1664 | LTTNG_SYMBOL_NAME_LEN); | |
1665 | if (ret == -1) { | |
1666 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1667 | (const char *) content, | |
1668 | strlen((const char *) content), | |
1669 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1670 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1671 | free(content); | |
1672 | goto end; | |
1673 | } | |
dcf266c0 JG |
1674 | free(content); |
1675 | } | |
1676 | ret = 0; | |
1677 | end: | |
1678 | return ret; | |
1679 | } | |
1680 | ||
1681 | static | |
1682 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1683 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1684 | { |
d7b645e2 | 1685 | int ret = 0, i; |
dcf266c0 | 1686 | xmlNodePtr node; |
91744e14 | 1687 | struct lttng_event *event; |
dcf266c0 JG |
1688 | char **exclusions = NULL; |
1689 | unsigned long exclusion_count = 0; | |
1690 | char *filter_expression = NULL; | |
1691 | ||
a0377dfe FD |
1692 | LTTNG_ASSERT(event_node); |
1693 | LTTNG_ASSERT(handle); | |
1694 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1695 | |
91744e14 FD |
1696 | event = lttng_event_create(); |
1697 | if (!event) { | |
1698 | ret = -LTTNG_ERR_NOMEM; | |
1699 | goto end; | |
1700 | } | |
dcf266c0 | 1701 | |
f40eba3d JG |
1702 | /* Initialize default log level which varies by domain */ |
1703 | switch (handle->domain.type) | |
1704 | { | |
1705 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1706 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1707 | break; |
1708 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1709 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1710 | break; |
1711 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1712 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1713 | break; |
1714 | case LTTNG_DOMAIN_UST: | |
1715 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1716 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1717 | break; |
1718 | default: | |
a0377dfe | 1719 | abort(); |
f40eba3d JG |
1720 | } |
1721 | ||
dcf266c0 JG |
1722 | for (node = xmlFirstElementChild(event_node); node; |
1723 | node = xmlNextElementSibling(node)) { | |
1724 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1725 | xmlChar *content; | |
dcf266c0 JG |
1726 | |
1727 | /* name */ | |
1728 | content = xmlNodeGetContent(node); | |
1729 | if (!content) { | |
1730 | ret = -LTTNG_ERR_NOMEM; | |
1731 | goto end; | |
1732 | } | |
1733 | ||
91744e14 | 1734 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1735 | (const char *) content, |
1736 | LTTNG_SYMBOL_NAME_LEN); | |
1737 | if (ret == -1) { | |
1738 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1739 | (const char *) content, | |
1740 | strlen((const char *) content), | |
1741 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1742 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1743 | free(content); | |
1744 | goto end; | |
1745 | } | |
dcf266c0 JG |
1746 | free(content); |
1747 | } else if (!strcmp((const char *) node->name, | |
1748 | config_element_enabled)) { | |
1749 | xmlChar *content = xmlNodeGetContent(node); | |
1750 | ||
1751 | /* enabled */ | |
1752 | if (!content) { | |
1753 | ret = -LTTNG_ERR_NOMEM; | |
1754 | goto end; | |
1755 | } | |
1756 | ||
91744e14 | 1757 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1758 | free(content); |
1759 | if (ret) { | |
1760 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1761 | goto end; | |
1762 | } | |
1763 | } else if (!strcmp((const char *) node->name, | |
1764 | config_element_type)) { | |
1765 | xmlChar *content = xmlNodeGetContent(node); | |
1766 | ||
1767 | /* type */ | |
1768 | if (!content) { | |
1769 | ret = -LTTNG_ERR_NOMEM; | |
1770 | goto end; | |
1771 | } | |
1772 | ||
1773 | ret = get_event_type(content); | |
1774 | free(content); | |
1775 | if (ret < 0) { | |
1776 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1777 | goto end; | |
1778 | } | |
1779 | ||
3afa94ae | 1780 | event->type = (lttng_event_type) ret; |
dcf266c0 JG |
1781 | } else if (!strcmp((const char *) node->name, |
1782 | config_element_loglevel_type)) { | |
1783 | xmlChar *content = xmlNodeGetContent(node); | |
1784 | ||
1785 | /* loglevel_type */ | |
1786 | if (!content) { | |
1787 | ret = -LTTNG_ERR_NOMEM; | |
1788 | goto end; | |
1789 | } | |
1790 | ||
1791 | ret = get_loglevel_type(content); | |
1792 | free(content); | |
1793 | if (ret < 0) { | |
1794 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1795 | goto end; | |
1796 | } | |
1797 | ||
3afa94ae | 1798 | event->loglevel_type = (lttng_loglevel_type) ret; |
dcf266c0 JG |
1799 | } else if (!strcmp((const char *) node->name, |
1800 | config_element_loglevel)) { | |
1801 | xmlChar *content; | |
1802 | int64_t loglevel = 0; | |
1803 | ||
1804 | /* loglevel */ | |
1805 | content = xmlNodeGetContent(node); | |
1806 | if (!content) { | |
1807 | ret = -LTTNG_ERR_NOMEM; | |
1808 | goto end; | |
1809 | } | |
1810 | ||
1811 | ret = parse_int(content, &loglevel); | |
1812 | free(content); | |
1813 | if (ret) { | |
1814 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1815 | goto end; | |
1816 | } | |
1817 | ||
1818 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1819 | WARN("loglevel out of range."); | |
1820 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1821 | goto end; | |
1822 | } | |
1823 | ||
91744e14 | 1824 | event->loglevel = loglevel; |
dcf266c0 JG |
1825 | } else if (!strcmp((const char *) node->name, |
1826 | config_element_filter)) { | |
1827 | xmlChar *content = | |
1828 | xmlNodeGetContent(node); | |
1829 | ||
1830 | /* filter */ | |
1831 | if (!content) { | |
1832 | ret = -LTTNG_ERR_NOMEM; | |
1833 | goto end; | |
1834 | } | |
1835 | ||
02d8ac3d | 1836 | free(filter_expression); |
dcf266c0 JG |
1837 | filter_expression = strdup((char *) content); |
1838 | free(content); | |
1839 | if (!filter_expression) { | |
1840 | ret = -LTTNG_ERR_NOMEM; | |
1841 | goto end; | |
1842 | } | |
1843 | } else if (!strcmp((const char *) node->name, | |
1844 | config_element_exclusions)) { | |
1845 | xmlNodePtr exclusion_node; | |
1846 | int exclusion_index = 0; | |
1847 | ||
1848 | /* exclusions */ | |
1849 | if (exclusions) { | |
1850 | /* | |
1851 | * Exclusions has already been initialized, | |
1852 | * invalid file. | |
1853 | */ | |
1854 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1855 | goto end; | |
1856 | } | |
1857 | ||
1858 | exclusion_count = xmlChildElementCount(node); | |
1859 | if (!exclusion_count) { | |
1860 | continue; | |
1861 | } | |
1862 | ||
64803277 | 1863 | exclusions = calloc<char *>(exclusion_count); |
dcf266c0 JG |
1864 | if (!exclusions) { |
1865 | exclusion_count = 0; | |
1866 | ret = -LTTNG_ERR_NOMEM; | |
1867 | goto end; | |
1868 | } | |
1869 | ||
1870 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1871 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1872 | xmlChar *content = | |
1873 | xmlNodeGetContent(exclusion_node); | |
1874 | ||
1875 | if (!content) { | |
1876 | ret = -LTTNG_ERR_NOMEM; | |
1877 | goto end; | |
1878 | } | |
1879 | ||
1880 | exclusions[exclusion_index] = strdup((const char *) content); | |
1881 | free(content); | |
1882 | if (!exclusions[exclusion_index]) { | |
1883 | ret = -LTTNG_ERR_NOMEM; | |
1884 | goto end; | |
1885 | } | |
1886 | exclusion_index++; | |
1887 | } | |
1888 | ||
91744e14 | 1889 | event->exclusion = 1; |
dcf266c0 JG |
1890 | } else if (!strcmp((const char *) node->name, |
1891 | config_element_attributes)) { | |
1892 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1893 | ||
1894 | /* attributes */ | |
1895 | if (!attribute_node) { | |
1896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1897 | goto end; | |
1898 | } | |
1899 | ||
c1e83fb4 | 1900 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
1901 | config_element_probe_attributes)) { |
1902 | xmlNodePtr probe_attribute_node; | |
1903 | ||
1904 | /* probe_attributes */ | |
1905 | for (probe_attribute_node = | |
1906 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1907 | probe_attribute_node = xmlNextElementSibling( | |
1908 | probe_attribute_node)) { | |
1909 | ||
1910 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 1911 | &event->attr.probe); |
dcf266c0 JG |
1912 | if (ret) { |
1913 | goto end; | |
1914 | } | |
1915 | } | |
c1e83fb4 FD |
1916 | } else if (!strcmp((const char *) attribute_node->name, |
1917 | config_element_function_attributes)) { | |
dcf266c0 JG |
1918 | size_t sym_len; |
1919 | xmlChar *content; | |
1920 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1921 | ||
1922 | /* function_attributes */ | |
1923 | content = xmlNodeGetContent(symbol_node); | |
1924 | if (!content) { | |
1925 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1926 | goto end; | |
1927 | } | |
1928 | ||
1929 | sym_len = strlen((char *) content); | |
1930 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1931 | WARN("Function name too long."); | |
1932 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1933 | free(content); | |
1934 | goto end; | |
1935 | } | |
1936 | ||
d2e67842 | 1937 | ret = lttng_strncpy( |
91744e14 | 1938 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
1939 | (char *) content, sym_len); |
1940 | if (ret == -1) { | |
1941 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1942 | free(content); | |
1943 | goto end; | |
1944 | } | |
dcf266c0 | 1945 | free(content); |
c1e83fb4 FD |
1946 | } else if (!strcmp((const char *) attribute_node->name, |
1947 | config_element_userspace_probe_tracepoint_attributes)) { | |
1948 | struct lttng_userspace_probe_location *location; | |
1949 | ||
1950 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
1951 | if (!location) { | |
1952 | WARN("Error processing userspace probe tracepoint attribute"); | |
1953 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1954 | goto end; | |
1955 | } | |
1956 | ret = lttng_event_set_userspace_probe_location( | |
1957 | event, location); | |
1958 | if (ret) { | |
1959 | WARN("Error setting userspace probe location field"); | |
1960 | lttng_userspace_probe_location_destroy( | |
1961 | location); | |
1962 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1963 | goto end; | |
1964 | } | |
1965 | } else if (!strcmp((const char *) attribute_node->name, | |
1966 | config_element_userspace_probe_function_attributes)) { | |
1967 | struct lttng_userspace_probe_location *location; | |
1968 | ||
1969 | location = | |
1970 | process_userspace_probe_function_attribute_node( | |
1971 | attribute_node); | |
1972 | if (!location) { | |
1973 | WARN("Error processing userspace probe function attribute"); | |
1974 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1975 | goto end; | |
1976 | } | |
1977 | ||
1978 | ret = lttng_event_set_userspace_probe_location( | |
1979 | event, location); | |
1980 | if (ret) { | |
1981 | WARN("Error setting userspace probe location field"); | |
1982 | lttng_userspace_probe_location_destroy( | |
1983 | location); | |
1984 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1985 | goto end; | |
1986 | } | |
1987 | } else { | |
1988 | /* Unknown event attribute. */ | |
1989 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1990 | goto end; | |
dcf266c0 JG |
1991 | } |
1992 | } | |
1993 | } | |
1994 | ||
91744e14 FD |
1995 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
1996 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
1997 | filter_expression, exclusion_count, exclusions); |
1998 | if (ret < 0) { | |
91744e14 | 1999 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2000 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2001 | goto end; | |
2002 | } | |
065321e9 | 2003 | } |
d2e67842 | 2004 | ret = 0; |
dcf266c0 JG |
2005 | end: |
2006 | for (i = 0; i < exclusion_count; i++) { | |
2007 | free(exclusions[i]); | |
2008 | } | |
2009 | ||
b33f872b | 2010 | lttng_event_destroy(event); |
dcf266c0 JG |
2011 | free(exclusions); |
2012 | free(filter_expression); | |
2013 | return ret; | |
2014 | } | |
2015 | ||
2016 | static | |
2017 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2018 | const char *channel_name) | |
2019 | { | |
2020 | int ret = 0; | |
d7b645e2 | 2021 | struct lttng_event event; |
dcf266c0 JG |
2022 | xmlNodePtr node; |
2023 | ||
a0377dfe FD |
2024 | LTTNG_ASSERT(events_node); |
2025 | LTTNG_ASSERT(handle); | |
2026 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2027 | |
2028 | for (node = xmlFirstElementChild(events_node); node; | |
2029 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2030 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2031 | if (ret) { |
2032 | goto end; | |
2033 | } | |
2034 | } | |
d7b645e2 JR |
2035 | |
2036 | /* | |
2037 | * Disable all events to enable only the necessary events. | |
2038 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2039 | * force this approach. | |
2040 | */ | |
2041 | memset(&event, 0, sizeof(event)); | |
2042 | event.loglevel = -1; | |
2043 | event.type = LTTNG_EVENT_ALL; | |
2044 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2045 | if (ret) { | |
2046 | goto end; | |
2047 | } | |
2048 | ||
2049 | for (node = xmlFirstElementChild(events_node); node; | |
2050 | node = xmlNextElementSibling(node)) { | |
2051 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2052 | if (ret) { | |
2053 | goto end; | |
2054 | } | |
2055 | } | |
2056 | ||
dcf266c0 JG |
2057 | end: |
2058 | return ret; | |
2059 | } | |
2060 | ||
2061 | static | |
2062 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2063 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2064 | xmlNodePtr *events_node) | |
2065 | { | |
2066 | int ret; | |
2067 | ||
a0377dfe FD |
2068 | LTTNG_ASSERT(attr_node); |
2069 | LTTNG_ASSERT(channel); | |
2070 | LTTNG_ASSERT(contexts_node); | |
2071 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2072 | |
2073 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2074 | xmlChar *content; | |
dcf266c0 JG |
2075 | |
2076 | /* name */ | |
2077 | content = xmlNodeGetContent(attr_node); | |
2078 | if (!content) { | |
2079 | ret = -LTTNG_ERR_NOMEM; | |
2080 | goto end; | |
2081 | } | |
2082 | ||
d2e67842 JG |
2083 | ret = lttng_strncpy(channel->name, |
2084 | (const char *) content, | |
2085 | LTTNG_SYMBOL_NAME_LEN); | |
2086 | if (ret == -1) { | |
2087 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2088 | (const char *) content, | |
2089 | strlen((const char *) content), | |
2090 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2091 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2092 | free(content); | |
2093 | goto end; | |
2094 | } | |
dcf266c0 JG |
2095 | free(content); |
2096 | } else if (!strcmp((const char *) attr_node->name, | |
2097 | config_element_enabled)) { | |
2098 | xmlChar *content; | |
2099 | int enabled; | |
2100 | ||
2101 | /* enabled */ | |
2102 | content = xmlNodeGetContent(attr_node); | |
2103 | if (!content) { | |
2104 | ret = -LTTNG_ERR_NOMEM; | |
2105 | goto end; | |
2106 | } | |
2107 | ||
2108 | ret = parse_bool(content, &enabled); | |
2109 | free(content); | |
2110 | if (ret) { | |
2111 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2112 | goto end; | |
2113 | } | |
2114 | ||
2115 | channel->enabled = enabled; | |
2116 | } else if (!strcmp((const char *) attr_node->name, | |
2117 | config_element_overwrite_mode)) { | |
2118 | xmlChar *content; | |
2119 | ||
2120 | /* overwrite_mode */ | |
2121 | content = xmlNodeGetContent(attr_node); | |
2122 | if (!content) { | |
2123 | ret = -LTTNG_ERR_NOMEM; | |
2124 | goto end; | |
2125 | } | |
2126 | ||
2127 | ret = get_overwrite_mode(content); | |
2128 | free(content); | |
2129 | if (ret < 0) { | |
2130 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2131 | goto end; | |
2132 | } | |
2133 | ||
2134 | channel->attr.overwrite = ret; | |
2135 | } else if (!strcmp((const char *) attr_node->name, | |
2136 | config_element_subbuf_size)) { | |
2137 | xmlChar *content; | |
2138 | ||
2139 | /* subbuffer_size */ | |
2140 | content = xmlNodeGetContent(attr_node); | |
2141 | if (!content) { | |
2142 | ret = -LTTNG_ERR_NOMEM; | |
2143 | goto end; | |
2144 | } | |
2145 | ||
2146 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2147 | free(content); | |
2148 | if (ret) { | |
2149 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2150 | goto end; | |
2151 | } | |
2152 | } else if (!strcmp((const char *) attr_node->name, | |
2153 | config_element_num_subbuf)) { | |
2154 | xmlChar *content; | |
2155 | ||
2156 | /* subbuffer_count */ | |
2157 | content = xmlNodeGetContent(attr_node); | |
2158 | if (!content) { | |
2159 | ret = -LTTNG_ERR_NOMEM; | |
2160 | goto end; | |
2161 | } | |
2162 | ||
2163 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2164 | free(content); | |
2165 | if (ret) { | |
2166 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2167 | goto end; | |
2168 | } | |
2169 | } else if (!strcmp((const char *) attr_node->name, | |
2170 | config_element_switch_timer_interval)) { | |
2171 | xmlChar *content; | |
2172 | uint64_t switch_timer_interval = 0; | |
2173 | ||
2174 | /* switch_timer_interval */ | |
2175 | content = xmlNodeGetContent(attr_node); | |
2176 | if (!content) { | |
2177 | ret = -LTTNG_ERR_NOMEM; | |
2178 | goto end; | |
2179 | } | |
2180 | ||
2181 | ret = parse_uint(content, &switch_timer_interval); | |
2182 | free(content); | |
2183 | if (ret) { | |
2184 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2185 | goto end; | |
2186 | } | |
2187 | ||
2188 | if (switch_timer_interval > UINT_MAX) { | |
2189 | WARN("switch_timer_interval out of range."); | |
2190 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2191 | goto end; | |
2192 | } | |
2193 | ||
2194 | channel->attr.switch_timer_interval = | |
2195 | switch_timer_interval; | |
2196 | } else if (!strcmp((const char *) attr_node->name, | |
2197 | config_element_read_timer_interval)) { | |
2198 | xmlChar *content; | |
2199 | uint64_t read_timer_interval = 0; | |
2200 | ||
2201 | /* read_timer_interval */ | |
2202 | content = xmlNodeGetContent(attr_node); | |
2203 | if (!content) { | |
2204 | ret = -LTTNG_ERR_NOMEM; | |
2205 | goto end; | |
2206 | } | |
2207 | ||
2208 | ret = parse_uint(content, &read_timer_interval); | |
2209 | free(content); | |
2210 | if (ret) { | |
2211 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2212 | goto end; | |
2213 | } | |
2214 | ||
2215 | if (read_timer_interval > UINT_MAX) { | |
2216 | WARN("read_timer_interval out of range."); | |
2217 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2218 | goto end; | |
2219 | } | |
2220 | ||
2221 | channel->attr.read_timer_interval = | |
2222 | read_timer_interval; | |
2223 | } else if (!strcmp((const char *) attr_node->name, | |
2224 | config_element_output_type)) { | |
2225 | xmlChar *content; | |
2226 | ||
2227 | /* output_type */ | |
2228 | content = xmlNodeGetContent(attr_node); | |
2229 | if (!content) { | |
2230 | ret = -LTTNG_ERR_NOMEM; | |
2231 | goto end; | |
2232 | } | |
2233 | ||
2234 | ret = get_output_type(content); | |
2235 | free(content); | |
2236 | if (ret < 0) { | |
2237 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2238 | goto end; | |
2239 | } | |
2240 | ||
3afa94ae | 2241 | channel->attr.output = (lttng_event_output) ret; |
dcf266c0 JG |
2242 | } else if (!strcmp((const char *) attr_node->name, |
2243 | config_element_tracefile_size)) { | |
2244 | xmlChar *content; | |
2245 | ||
2246 | /* tracefile_size */ | |
2247 | content = xmlNodeGetContent(attr_node); | |
2248 | if (!content) { | |
2249 | ret = -LTTNG_ERR_NOMEM; | |
2250 | goto end; | |
2251 | } | |
2252 | ||
2253 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2254 | free(content); | |
2255 | if (ret) { | |
2256 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2257 | goto end; | |
2258 | } | |
2259 | } else if (!strcmp((const char *) attr_node->name, | |
2260 | config_element_tracefile_count)) { | |
2261 | xmlChar *content; | |
2262 | ||
2263 | /* tracefile_count */ | |
2264 | content = xmlNodeGetContent(attr_node); | |
2265 | if (!content) { | |
2266 | ret = -LTTNG_ERR_NOMEM; | |
2267 | goto end; | |
2268 | } | |
2269 | ||
2270 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2271 | free(content); | |
2272 | if (ret) { | |
2273 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2274 | goto end; | |
2275 | } | |
2276 | } else if (!strcmp((const char *) attr_node->name, | |
2277 | config_element_live_timer_interval)) { | |
2278 | xmlChar *content; | |
2279 | uint64_t live_timer_interval = 0; | |
2280 | ||
2281 | /* live_timer_interval */ | |
2282 | content = xmlNodeGetContent(attr_node); | |
2283 | if (!content) { | |
2284 | ret = -LTTNG_ERR_NOMEM; | |
2285 | goto end; | |
2286 | } | |
2287 | ||
2288 | ret = parse_uint(content, &live_timer_interval); | |
2289 | free(content); | |
2290 | if (ret) { | |
2291 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2292 | goto end; | |
2293 | } | |
2294 | ||
2295 | if (live_timer_interval > UINT_MAX) { | |
2296 | WARN("live_timer_interval out of range."); | |
2297 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2298 | goto end; | |
2299 | } | |
2300 | ||
2301 | channel->attr.live_timer_interval = | |
2302 | live_timer_interval; | |
4fc2b126 JR |
2303 | } else if (!strcmp((const char *) attr_node->name, |
2304 | config_element_monitor_timer_interval)) { | |
2305 | xmlChar *content; | |
2306 | uint64_t monitor_timer_interval = 0; | |
2307 | ||
2308 | /* monitor_timer_interval */ | |
2309 | content = xmlNodeGetContent(attr_node); | |
2310 | if (!content) { | |
2311 | ret = -LTTNG_ERR_NOMEM; | |
2312 | goto end; | |
2313 | } | |
2314 | ||
2315 | ret = parse_uint(content, &monitor_timer_interval); | |
2316 | free(content); | |
2317 | if (ret) { | |
2318 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2319 | goto end; | |
2320 | } | |
2321 | ||
2322 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2323 | monitor_timer_interval); | |
2324 | if (ret) { | |
2325 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2326 | goto end; | |
2327 | } | |
275472aa JR |
2328 | } else if (!strcmp((const char *) attr_node->name, |
2329 | config_element_blocking_timeout)) { | |
2330 | xmlChar *content; | |
2331 | int64_t blocking_timeout = 0; | |
2332 | ||
2333 | /* blocking_timeout */ | |
2334 | content = xmlNodeGetContent(attr_node); | |
2335 | if (!content) { | |
2336 | ret = -LTTNG_ERR_NOMEM; | |
2337 | goto end; | |
2338 | } | |
2339 | ||
2340 | ret = parse_int(content, &blocking_timeout); | |
2341 | free(content); | |
2342 | if (ret) { | |
2343 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2344 | goto end; | |
2345 | } | |
2346 | ||
2347 | ret = lttng_channel_set_blocking_timeout(channel, | |
2348 | blocking_timeout); | |
2349 | if (ret) { | |
2350 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2351 | goto end; | |
2352 | } | |
dcf266c0 JG |
2353 | } else if (!strcmp((const char *) attr_node->name, |
2354 | config_element_events)) { | |
2355 | /* events */ | |
2356 | *events_node = attr_node; | |
2357 | } else { | |
2358 | /* contexts */ | |
2359 | *contexts_node = attr_node; | |
2360 | } | |
2361 | ret = 0; | |
2362 | end: | |
2363 | return ret; | |
2364 | } | |
2365 | ||
2366 | static | |
2367 | int process_context_node(xmlNodePtr context_node, | |
2368 | struct lttng_handle *handle, const char *channel_name) | |
2369 | { | |
2370 | int ret; | |
2371 | struct lttng_event_context context; | |
2372 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2373 | ||
a0377dfe FD |
2374 | LTTNG_ASSERT(handle); |
2375 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2376 | |
2377 | if (!context_child_node) { | |
2378 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2379 | goto end; | |
2380 | } | |
2381 | ||
2382 | memset(&context, 0, sizeof(context)); | |
2383 | ||
2384 | if (!strcmp((const char *) context_child_node->name, | |
2385 | config_element_type)) { | |
2386 | /* type */ | |
2387 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2388 | |
dcf266c0 JG |
2389 | if (!content) { |
2390 | ret = -LTTNG_ERR_NOMEM; | |
2391 | goto end; | |
2392 | } | |
2393 | ||
2394 | ret = get_context_type(content); | |
2395 | free(content); | |
2396 | if (ret < 0) { | |
2397 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2398 | goto end; | |
2399 | } | |
2400 | ||
3afa94ae | 2401 | context.ctx = (lttng_event_context_type) ret; |
045fc617 JG |
2402 | } else if (!strcmp((const char *) context_child_node->name, |
2403 | config_element_context_perf)) { | |
2404 | /* perf */ | |
dcf266c0 JG |
2405 | xmlNodePtr perf_attr_node; |
2406 | ||
14ce5bd8 JG |
2407 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2408 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2409 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2410 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2411 | perf_attr_node; perf_attr_node = | |
2412 | xmlNextElementSibling(perf_attr_node)) { | |
2413 | if (!strcmp((const char *) perf_attr_node->name, | |
2414 | config_element_type)) { | |
2415 | xmlChar *content; | |
2416 | uint64_t type = 0; | |
2417 | ||
2418 | /* type */ | |
2419 | content = xmlNodeGetContent(perf_attr_node); | |
2420 | if (!content) { | |
2421 | ret = -LTTNG_ERR_NOMEM; | |
2422 | goto end; | |
2423 | } | |
2424 | ||
2425 | ret = parse_uint(content, &type); | |
2426 | free(content); | |
2427 | if (ret) { | |
2428 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2429 | goto end; | |
2430 | } | |
2431 | ||
2432 | if (type > UINT32_MAX) { | |
2433 | WARN("perf context type out of range."); | |
2434 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2435 | goto end; | |
2436 | } | |
2437 | ||
2438 | context.u.perf_counter.type = type; | |
2439 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2440 | config_element_config)) { | |
2441 | xmlChar *content; | |
2442 | uint64_t config = 0; | |
2443 | ||
2444 | /* config */ | |
2445 | content = xmlNodeGetContent(perf_attr_node); | |
2446 | if (!content) { | |
2447 | ret = -LTTNG_ERR_NOMEM; | |
2448 | goto end; | |
2449 | } | |
2450 | ||
2451 | ret = parse_uint(content, &config); | |
2452 | free(content); | |
2453 | if (ret) { | |
2454 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2455 | goto end; | |
2456 | } | |
2457 | ||
2458 | context.u.perf_counter.config = config; | |
2459 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2460 | config_element_name)) { | |
2461 | xmlChar *content; | |
dcf266c0 JG |
2462 | |
2463 | /* name */ | |
2464 | content = xmlNodeGetContent(perf_attr_node); | |
2465 | if (!content) { | |
2466 | ret = -LTTNG_ERR_NOMEM; | |
2467 | goto end; | |
2468 | } | |
2469 | ||
d2e67842 JG |
2470 | ret = lttng_strncpy(context.u.perf_counter.name, |
2471 | (const char *) content, | |
2472 | LTTNG_SYMBOL_NAME_LEN); | |
2473 | if (ret == -1) { | |
2474 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2475 | (const char *) content, | |
2476 | strlen((const char *) content), | |
2477 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2478 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2479 | free(content); | |
2480 | goto end; | |
2481 | } | |
dcf266c0 JG |
2482 | free(content); |
2483 | } | |
2484 | } | |
045fc617 JG |
2485 | } else if (!strcmp((const char *) context_child_node->name, |
2486 | config_element_context_app)) { | |
2487 | /* application context */ | |
2488 | xmlNodePtr app_ctx_node; | |
2489 | ||
2490 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2491 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2492 | app_ctx_node; app_ctx_node = | |
2493 | xmlNextElementSibling(app_ctx_node)) { | |
2494 | xmlChar *content; | |
2495 | char **target = strcmp( | |
2496 | (const char *) app_ctx_node->name, | |
2497 | config_element_context_app_provider_name) == 0 ? | |
2498 | &context.u.app_ctx.provider_name : | |
2499 | &context.u.app_ctx.ctx_name; | |
2500 | ||
2501 | content = xmlNodeGetContent(app_ctx_node); | |
2502 | if (!content) { | |
2503 | ret = -LTTNG_ERR_NOMEM; | |
2504 | goto end; | |
2505 | } | |
2506 | ||
2507 | *target = (char *) content; | |
2508 | } | |
2509 | } else { | |
2510 | /* Unrecognized context type */ | |
2511 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2512 | goto end; | |
dcf266c0 JG |
2513 | } |
2514 | ||
2515 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2516 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2517 | free(context.u.app_ctx.provider_name); | |
2518 | free(context.u.app_ctx.ctx_name); | |
2519 | } | |
dcf266c0 JG |
2520 | end: |
2521 | return ret; | |
2522 | } | |
2523 | ||
2524 | static | |
2525 | int process_contexts_node(xmlNodePtr contexts_node, | |
2526 | struct lttng_handle *handle, const char *channel_name) | |
2527 | { | |
2528 | int ret = 0; | |
2529 | xmlNodePtr context_node; | |
2530 | ||
2531 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2532 | context_node = xmlNextElementSibling(context_node)) { | |
2533 | ret = process_context_node(context_node, handle, channel_name); | |
2534 | if (ret) { | |
2535 | goto end; | |
2536 | } | |
2537 | } | |
2538 | end: | |
2539 | return ret; | |
2540 | } | |
2541 | ||
159b042f | 2542 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2543 | const char **element_id_tracker, |
159b042f JG |
2544 | const char **element_value_type, |
2545 | const char **element_value, | |
2546 | const char **element_value_alias, | |
55c9e7ca JR |
2547 | const char **element_name) |
2548 | { | |
2549 | int ret = 0; | |
2550 | ||
159b042f JG |
2551 | switch (process_attr) { |
2552 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2553 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2554 | *element_value_type = config_element_process_attr_pid_value; | |
2555 | *element_value = config_element_process_attr_id; | |
2556 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2557 | *element_name = NULL; |
2558 | break; | |
159b042f JG |
2559 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2560 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2561 | *element_value_type = config_element_process_attr_vpid_value; | |
2562 | *element_value = config_element_process_attr_id; | |
2563 | *element_value_alias = NULL; | |
55c9e7ca JR |
2564 | *element_name = NULL; |
2565 | break; | |
159b042f JG |
2566 | case LTTNG_PROCESS_ATTR_USER_ID: |
2567 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2568 | *element_value_type = config_element_process_attr_uid_value; | |
2569 | *element_value = config_element_process_attr_id; | |
2570 | *element_value_alias = NULL; | |
55c9e7ca JR |
2571 | *element_name = config_element_name; |
2572 | break; | |
159b042f JG |
2573 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2574 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2575 | *element_value_type = config_element_process_attr_vuid_value; | |
2576 | *element_value = config_element_process_attr_id; | |
2577 | *element_value_alias = NULL; | |
55c9e7ca JR |
2578 | *element_name = config_element_name; |
2579 | break; | |
159b042f JG |
2580 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2581 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2582 | *element_value_type = config_element_process_attr_gid_value; | |
2583 | *element_value = config_element_process_attr_id; | |
2584 | *element_value_alias = NULL; | |
55c9e7ca JR |
2585 | *element_name = config_element_name; |
2586 | break; | |
159b042f JG |
2587 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2588 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2589 | *element_value_type = config_element_process_attr_vgid_value; | |
2590 | *element_value = config_element_process_attr_id; | |
2591 | *element_value_alias = NULL; | |
55c9e7ca JR |
2592 | *element_name = config_element_name; |
2593 | break; | |
2594 | default: | |
2595 | ret = LTTNG_ERR_INVALID; | |
2596 | } | |
2597 | return ret; | |
2598 | } | |
2599 | ||
f7af9a72 JG |
2600 | static int process_legacy_pid_tracker_node( |
2601 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2602 | { | |
2603 | int ret = 0, child_count; | |
2604 | xmlNodePtr targets_node = NULL; | |
2605 | xmlNodePtr node; | |
2606 | const char *element_id_tracker; | |
2607 | const char *element_target_id; | |
2608 | const char *element_id; | |
2609 | const char *element_id_alias; | |
2610 | const char *element_name; | |
2611 | enum lttng_error_code tracker_handle_ret_code; | |
2612 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2613 | enum lttng_process_attr_tracker_handle_status status; | |
2614 | const enum lttng_process_attr process_attr = | |
2615 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2616 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2617 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2618 | ||
a0377dfe | 2619 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2620 | |
2621 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2622 | handle->session_name, handle->domain.type, | |
2623 | process_attr, | |
2624 | &tracker_handle); | |
2625 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2626 | ret = LTTNG_ERR_INVALID; | |
2627 | goto end; | |
2628 | } | |
2629 | ||
2630 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2631 | &element_target_id, &element_id, &element_id_alias, | |
2632 | &element_name); | |
2633 | if (ret) { | |
2634 | goto end; | |
2635 | } | |
2636 | ||
2637 | /* Get the targets node */ | |
2638 | for (node = xmlFirstElementChild(trackers_node); node; | |
2639 | node = xmlNextElementSibling(node)) { | |
2640 | if (!strcmp((const char *) node->name, | |
2641 | config_element_tracker_targets_legacy)) { | |
2642 | targets_node = node; | |
2643 | break; | |
2644 | } | |
3afa94ae | 2645 | } |
f7af9a72 JG |
2646 | |
2647 | if (!targets_node) { | |
2648 | ret = LTTNG_ERR_INVALID; | |
2649 | goto end; | |
2650 | } | |
2651 | ||
2652 | /* Go through all id target node */ | |
2653 | child_count = xmlChildElementCount(targets_node); | |
2654 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2655 | tracker_handle, | |
2656 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2657 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2658 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2659 | ret = LTTNG_ERR_UNK; | |
2660 | goto end; | |
2661 | } | |
2662 | ||
2663 | /* Add all tracked values. */ | |
2664 | for (node = xmlFirstElementChild(targets_node); node; | |
2665 | node = xmlNextElementSibling(node)) { | |
2666 | xmlNodePtr pid_target_node = node; | |
2667 | ||
2668 | /* get pid_target node and track it */ | |
2669 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2670 | node = xmlNextElementSibling(node)) { | |
2671 | if (!strcmp((const char *) node->name, | |
2672 | config_element_tracker_pid_legacy)) { | |
2673 | int64_t id; | |
2674 | xmlChar *content = xmlNodeGetContent(node); | |
2675 | ||
2676 | if (!content) { | |
2677 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2678 | goto end; | |
2679 | } | |
2680 | ||
2681 | ret = parse_int(content, &id); | |
2682 | free(content); | |
2683 | if (ret) { | |
2684 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2685 | goto end; | |
2686 | } | |
2687 | ||
2688 | switch (process_attr) { | |
2689 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2690 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2691 | tracker_handle, | |
2692 | (pid_t) id); | |
2693 | break; | |
2694 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2695 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2696 | tracker_handle, | |
2697 | (pid_t) id); | |
2698 | break; | |
2699 | default: | |
2700 | ret = LTTNG_ERR_INVALID; | |
2701 | goto end; | |
2702 | } | |
2703 | } | |
2704 | switch (status) { | |
2705 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2706 | continue; | |
2707 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2708 | ret = LTTNG_ERR_INVALID; | |
2709 | break; | |
2710 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2711 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2712 | break; | |
2713 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2714 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2715 | break; | |
2716 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2717 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2718 | default: | |
2719 | ret = LTTNG_ERR_UNK; | |
2720 | goto end; | |
2721 | } | |
2722 | } | |
2723 | node = pid_target_node; | |
2724 | } | |
2725 | ||
2726 | end: | |
2727 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2728 | return ret; | |
2729 | } | |
2730 | ||
55c9e7ca JR |
2731 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2732 | struct lttng_handle *handle, | |
159b042f | 2733 | enum lttng_process_attr process_attr) |
847a5916 | 2734 | { |
159b042f | 2735 | int ret = 0, child_count; |
f7af9a72 | 2736 | xmlNodePtr values_node = NULL; |
847a5916 | 2737 | xmlNodePtr node; |
55c9e7ca JR |
2738 | const char *element_id_tracker; |
2739 | const char *element_target_id; | |
2740 | const char *element_id; | |
2741 | const char *element_id_alias; | |
2742 | const char *element_name; | |
159b042f JG |
2743 | enum lttng_error_code tracker_handle_ret_code; |
2744 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2745 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2746 | |
a0377dfe FD |
2747 | LTTNG_ASSERT(handle); |
2748 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2749 | |
159b042f JG |
2750 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2751 | handle->session_name, handle->domain.type, process_attr, | |
2752 | &tracker_handle); | |
2753 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2754 | ret = LTTNG_ERR_INVALID; | |
2755 | goto end; | |
2756 | } | |
2757 | ||
2758 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2759 | &element_target_id, &element_id, &element_id_alias, |
2760 | &element_name); | |
2761 | if (ret) { | |
159b042f | 2762 | goto end; |
55c9e7ca JR |
2763 | } |
2764 | ||
f7af9a72 | 2765 | /* get the values node */ |
55c9e7ca JR |
2766 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2767 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2768 | if (!strcmp((const char *) node->name, |
159b042f | 2769 | config_element_process_attr_values)) { |
f7af9a72 | 2770 | values_node = node; |
847a5916 JR |
2771 | break; |
2772 | } | |
2773 | } | |
2774 | ||
f7af9a72 | 2775 | if (!values_node) { |
847a5916 JR |
2776 | ret = LTTNG_ERR_INVALID; |
2777 | goto end; | |
2778 | } | |
2779 | ||
55c9e7ca | 2780 | /* Go through all id target node */ |
f7af9a72 | 2781 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2782 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2783 | tracker_handle, | |
2784 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2785 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2786 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2787 | ret = LTTNG_ERR_UNK; | |
2788 | goto end; | |
847a5916 | 2789 | } |
159b042f JG |
2790 | |
2791 | /* Add all tracked values. */ | |
f7af9a72 | 2792 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2793 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2794 | xmlNodePtr id_target_node = node; |
847a5916 | 2795 | |
55c9e7ca JR |
2796 | /* get id node and track it */ |
2797 | for (node = xmlFirstElementChild(id_target_node); node; | |
2798 | node = xmlNextElementSibling(node)) { | |
2799 | if (!strcmp((const char *) node->name, element_id) || | |
2800 | (element_id_alias && | |
2801 | !strcmp((const char *) node->name, | |
2802 | element_id_alias))) { | |
2803 | int64_t id; | |
159b042f | 2804 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2805 | |
847a5916 JR |
2806 | if (!content) { |
2807 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2808 | goto end; | |
2809 | } | |
2810 | ||
55c9e7ca | 2811 | ret = parse_int(content, &id); |
847a5916 JR |
2812 | free(content); |
2813 | if (ret) { | |
2814 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2815 | goto end; | |
2816 | } | |
2817 | ||
159b042f JG |
2818 | switch (process_attr) { |
2819 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2820 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2821 | tracker_handle, | |
2822 | (pid_t) id); | |
2823 | break; | |
2824 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2825 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2826 | tracker_handle, | |
2827 | (pid_t) id); | |
2828 | break; | |
2829 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2830 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2831 | tracker_handle, | |
2832 | (uid_t) id); | |
2833 | break; | |
2834 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2835 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2836 | tracker_handle, | |
2837 | (uid_t) id); | |
2838 | break; | |
2839 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2840 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2841 | tracker_handle, | |
2842 | (gid_t) id); | |
2843 | break; | |
2844 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2845 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2846 | tracker_handle, | |
2847 | (gid_t) id); | |
2848 | break; | |
2849 | default: | |
2850 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2851 | goto end; |
2852 | } | |
159b042f JG |
2853 | } else if (element_name && |
2854 | !strcmp((const char *) node->name, | |
2855 | element_name)) { | |
2856 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 2857 | |
55c9e7ca JR |
2858 | if (!content) { |
2859 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2860 | goto end; | |
2861 | } | |
2d97a006 | 2862 | |
159b042f JG |
2863 | switch (process_attr) { |
2864 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2865 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2866 | tracker_handle, | |
2867 | (const char *) content); | |
2868 | break; | |
2869 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2870 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2871 | tracker_handle, | |
2872 | (const char *) content); | |
2873 | break; | |
2874 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2875 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2876 | tracker_handle, | |
2877 | (const char *) content); | |
2878 | break; | |
2879 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2880 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2881 | tracker_handle, | |
2882 | (const char *) content); | |
2883 | break; | |
2884 | default: | |
2885 | free(content); | |
2886 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2887 | goto end; |
2888 | } | |
55c9e7ca | 2889 | free(content); |
159b042f JG |
2890 | } |
2891 | switch (status) { | |
2892 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2893 | continue; | |
2894 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2895 | ret = LTTNG_ERR_INVALID; | |
2896 | break; | |
2897 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2898 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2899 | break; | |
2900 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2901 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2902 | break; | |
2903 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2904 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2905 | default: | |
2906 | ret = LTTNG_ERR_UNK; | |
2907 | goto end; | |
847a5916 JR |
2908 | } |
2909 | } | |
55c9e7ca | 2910 | node = id_target_node; |
847a5916 JR |
2911 | } |
2912 | ||
2913 | end: | |
159b042f | 2914 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2915 | return ret; |
2916 | } | |
2917 | ||
dcf266c0 JG |
2918 | static |
2919 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2920 | { | |
2921 | int ret; | |
3afa94ae | 2922 | struct lttng_domain domain {}; |
dcf266c0 | 2923 | struct lttng_handle *handle = NULL; |
4fc2b126 | 2924 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2925 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2926 | xmlNodePtr trackers_node = NULL; |
2927 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2928 | xmlNodePtr vpid_tracker_node = NULL; |
2929 | xmlNodePtr uid_tracker_node = NULL; | |
2930 | xmlNodePtr vuid_tracker_node = NULL; | |
2931 | xmlNodePtr gid_tracker_node = NULL; | |
2932 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2933 | xmlNodePtr node; |
2934 | ||
a0377dfe | 2935 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2936 | |
2937 | ret = init_domain(domain_node, &domain); | |
2938 | if (ret) { | |
2939 | goto end; | |
2940 | } | |
2941 | ||
2942 | handle = lttng_create_handle(session_name, &domain); | |
2943 | if (!handle) { | |
2944 | ret = -LTTNG_ERR_NOMEM; | |
2945 | goto end; | |
2946 | } | |
2947 | ||
2948 | /* get the channels node */ | |
2949 | for (node = xmlFirstElementChild(domain_node); node; | |
2950 | node = xmlNextElementSibling(node)) { | |
2951 | if (!strcmp((const char *) node->name, | |
2952 | config_element_channels)) { | |
2953 | channels_node = node; | |
2954 | break; | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | if (!channels_node) { | |
2959 | goto end; | |
2960 | } | |
2961 | ||
2962 | /* create all channels */ | |
2963 | for (node = xmlFirstElementChild(channels_node); node; | |
2964 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2965 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2966 | xmlNodePtr contexts_node = NULL; |
2967 | xmlNodePtr events_node = NULL; | |
2968 | xmlNodePtr channel_attr_node; | |
2969 | ||
36d1687c JG |
2970 | /* |
2971 | * Channels of the "agent" types cannot be created directly. | |
2972 | * They are meant to be created implicitly through the | |
2973 | * activation of events in their domain. However, a user | |
2974 | * can override the default channel configuration attributes | |
2975 | * by creating the underlying UST channel _before_ enabling | |
2976 | * an agent domain event. | |
2977 | * | |
2978 | * Hence, the channel's type is substituted before the creation | |
2979 | * and restored by the time the events are created. | |
2980 | */ | |
2981 | switch (domain.type) { | |
2982 | case LTTNG_DOMAIN_JUL: | |
2983 | case LTTNG_DOMAIN_LOG4J: | |
2984 | case LTTNG_DOMAIN_PYTHON: | |
2985 | domain.type = LTTNG_DOMAIN_UST; | |
2986 | default: | |
2987 | break; | |
2988 | } | |
2989 | ||
4fc2b126 JR |
2990 | channel = lttng_channel_create(&domain); |
2991 | if (!channel) { | |
2992 | ret = -1; | |
2993 | goto end; | |
2994 | } | |
dcf266c0 JG |
2995 | |
2996 | for (channel_attr_node = xmlFirstElementChild(node); | |
2997 | channel_attr_node; channel_attr_node = | |
2998 | xmlNextElementSibling(channel_attr_node)) { | |
2999 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 3000 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
3001 | if (ret) { |
3002 | goto end; | |
3003 | } | |
3004 | } | |
3005 | ||
4fc2b126 | 3006 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3007 | if (ret < 0) { |
3008 | goto end; | |
3009 | } | |
3010 | ||
36d1687c JG |
3011 | /* Restore the original channel domain. */ |
3012 | domain.type = original_domain; | |
3013 | ||
4fc2b126 | 3014 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3015 | if (ret) { |
3016 | goto end; | |
3017 | } | |
3018 | ||
3019 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3020 | channel->name); |
dcf266c0 JG |
3021 | if (ret) { |
3022 | goto end; | |
3023 | } | |
4fc2b126 JR |
3024 | |
3025 | lttng_channel_destroy(channel); | |
dcf266c0 | 3026 | } |
4fc2b126 | 3027 | channel = NULL; |
847a5916 JR |
3028 | |
3029 | /* get the trackers node */ | |
3030 | for (node = xmlFirstElementChild(domain_node); node; | |
3031 | node = xmlNextElementSibling(node)) { | |
3032 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3033 | config_element_process_attr_trackers) || |
3034 | !strcmp((const char *) node->name, | |
3035 | config_element_trackers_legacy)) { | |
3036 | if (trackers_node) { | |
3037 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3038 | config_element_process_attr_trackers, | |
3039 | config_element_trackers_legacy); | |
3040 | ret = -1; | |
3041 | goto end; | |
3042 | } | |
847a5916 JR |
3043 | trackers_node = node; |
3044 | break; | |
3045 | } | |
3046 | } | |
3047 | ||
3048 | if (!trackers_node) { | |
3049 | goto end; | |
3050 | } | |
3051 | ||
3052 | for (node = xmlFirstElementChild(trackers_node); node; | |
3053 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3054 | if (!strcmp((const char *) node->name, |
159b042f | 3055 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3056 | pid_tracker_node = node; |
55c9e7ca | 3057 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3058 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3059 | if (ret) { |
3060 | goto end; | |
3061 | } | |
3062 | } | |
3063 | if (!strcmp((const char *) node->name, | |
159b042f | 3064 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3065 | vpid_tracker_node = node; |
3066 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3067 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3068 | if (ret) { |
3069 | goto end; | |
3070 | } | |
3071 | } | |
3072 | if (!strcmp((const char *) node->name, | |
159b042f | 3073 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3074 | uid_tracker_node = node; |
3075 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3076 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3077 | if (ret) { |
3078 | goto end; | |
3079 | } | |
3080 | } | |
3081 | if (!strcmp((const char *) node->name, | |
159b042f | 3082 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3083 | vuid_tracker_node = node; |
3084 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3085 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3086 | if (ret) { |
3087 | goto end; | |
3088 | } | |
3089 | } | |
3090 | if (!strcmp((const char *) node->name, | |
159b042f | 3091 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3092 | gid_tracker_node = node; |
3093 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3094 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3095 | if (ret) { |
3096 | goto end; | |
3097 | } | |
3098 | } | |
3099 | if (!strcmp((const char *) node->name, | |
159b042f | 3100 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3101 | vgid_tracker_node = node; |
3102 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3103 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3104 | if (ret) { |
3105 | goto end; | |
3106 | } | |
3107 | } | |
f7af9a72 JG |
3108 | if (!strcmp((const char *) node->name, |
3109 | config_element_pid_tracker_legacy)) { | |
3110 | ret = process_legacy_pid_tracker_node(node, handle); | |
3111 | if (ret) { | |
3112 | goto end; | |
3113 | } | |
3114 | } | |
847a5916 JR |
3115 | } |
3116 | ||
dcf266c0 | 3117 | end: |
4fc2b126 | 3118 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3119 | lttng_destroy_handle(handle); |
3120 | return ret; | |
3121 | } | |
3122 | ||
66ea93b1 JG |
3123 | static |
3124 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3125 | { | |
3126 | int ret; | |
3127 | enum lttng_rotation_status status; | |
3128 | struct lttng_rotation_schedule *periodic = | |
3129 | lttng_rotation_schedule_periodic_create(); | |
3130 | ||
3131 | if (!periodic) { | |
3132 | ret = -LTTNG_ERR_NOMEM; | |
3133 | goto error; | |
3134 | } | |
3135 | ||
3136 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3137 | time_us); | |
3138 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3139 | ret = -LTTNG_ERR_INVALID; | |
3140 | goto error; | |
3141 | } | |
3142 | ||
3143 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3144 | switch (status) { | |
3145 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3146 | ret = 0; |
66ea93b1 JG |
3147 | break; |
3148 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3149 | case LTTNG_ROTATION_STATUS_INVALID: | |
3150 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3151 | break; | |
3152 | default: | |
3153 | ret = -LTTNG_ERR_UNK; | |
3154 | break; | |
3155 | } | |
3156 | error: | |
3157 | lttng_rotation_schedule_destroy(periodic); | |
3158 | return ret; | |
3159 | } | |
3160 | ||
3161 | static | |
3162 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3163 | { | |
3164 | int ret; | |
3165 | enum lttng_rotation_status status; | |
3166 | struct lttng_rotation_schedule *size = | |
3167 | lttng_rotation_schedule_size_threshold_create(); | |
3168 | ||
3169 | if (!size) { | |
3170 | ret = -LTTNG_ERR_NOMEM; | |
3171 | goto error; | |
3172 | } | |
3173 | ||
3174 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3175 | size_bytes); | |
3176 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3177 | ret = -LTTNG_ERR_INVALID; | |
3178 | goto error; | |
3179 | } | |
3180 | ||
3181 | status = lttng_session_add_rotation_schedule(name, size); | |
3182 | switch (status) { | |
3183 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3184 | ret = 0; |
66ea93b1 JG |
3185 | break; |
3186 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3187 | case LTTNG_ROTATION_STATUS_INVALID: | |
3188 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3189 | break; | |
3190 | default: | |
3191 | ret = -LTTNG_ERR_UNK; | |
3192 | break; | |
3193 | } | |
3194 | error: | |
3195 | lttng_rotation_schedule_destroy(size); | |
3196 | return ret; | |
3197 | } | |
3198 | ||
ce6176f2 JG |
3199 | static |
3200 | int process_session_rotation_schedules_node( | |
3201 | xmlNodePtr schedules_node, | |
3202 | uint64_t *rotation_timer_interval, | |
3203 | uint64_t *rotation_size) | |
3204 | { | |
3205 | int ret = 0; | |
3206 | xmlNodePtr child; | |
3207 | ||
3208 | for (child = xmlFirstElementChild(schedules_node); | |
3209 | child; | |
3210 | child = xmlNextElementSibling(child)) { | |
3211 | if (!strcmp((const char *) child->name, | |
3212 | config_element_rotation_schedule_periodic)) { | |
3213 | xmlChar *content; | |
3214 | xmlNodePtr time_us_node; | |
3215 | ||
3216 | /* periodic rotation schedule */ | |
3217 | time_us_node = xmlFirstElementChild(child); | |
3218 | if (!time_us_node || | |
3219 | strcmp((const char *) time_us_node->name, | |
3220 | config_element_rotation_schedule_periodic_time_us)) { | |
3221 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3222 | goto end; | |
3223 | } | |
3224 | ||
3225 | /* time_us child */ | |
3226 | content = xmlNodeGetContent(time_us_node); | |
3227 | if (!content) { | |
3228 | ret = -LTTNG_ERR_NOMEM; | |
3229 | goto end; | |
3230 | } | |
3231 | ret = parse_uint(content, rotation_timer_interval); | |
3232 | free(content); | |
3233 | if (ret) { | |
3234 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3235 | goto end; | |
3236 | } | |
3237 | } else if (!strcmp((const char *) child->name, | |
3238 | config_element_rotation_schedule_size_threshold)) { | |
3239 | xmlChar *content; | |
3240 | xmlNodePtr bytes_node; | |
3241 | ||
3242 | /* size_threshold rotation schedule */ | |
3243 | bytes_node = xmlFirstElementChild(child); | |
3244 | if (!bytes_node || | |
3245 | strcmp((const char *) bytes_node->name, | |
3246 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3247 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3248 | goto end; | |
3249 | } | |
3250 | ||
3251 | /* bytes child */ | |
3252 | content = xmlNodeGetContent(bytes_node); | |
3253 | if (!content) { | |
3254 | ret = -LTTNG_ERR_NOMEM; | |
3255 | goto end; | |
3256 | } | |
3257 | ret = parse_uint(content, rotation_size); | |
3258 | free(content); | |
3259 | if (ret) { | |
3260 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3261 | goto end; | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | ||
3266 | end: | |
3267 | return ret; | |
3268 | } | |
3269 | ||
dcf266c0 JG |
3270 | static |
3271 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3272 | int overwrite, |
3273 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3274 | { |
3275 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3276 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3277 | rotation_timer_interval = 0, |
3278 | rotation_size = 0; | |
d324faf7 | 3279 | xmlChar *name = NULL; |
9e7c9f56 | 3280 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3281 | xmlNodePtr domains_node = NULL; |
3282 | xmlNodePtr output_node = NULL; | |
3283 | xmlNodePtr node; | |
90936dcf | 3284 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3285 | struct lttng_domain *kernel_domain = NULL; |
3286 | struct lttng_domain *ust_domain = NULL; | |
3287 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3288 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3289 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3290 | |
3291 | for (node = xmlFirstElementChild(session_node); node; | |
3292 | node = xmlNextElementSibling(node)) { | |
3293 | if (!name && !strcmp((const char *) node->name, | |
3294 | config_element_name)) { | |
3295 | /* name */ | |
3296 | xmlChar *node_content = xmlNodeGetContent(node); | |
3297 | if (!node_content) { | |
3298 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3299 | goto error; |
dcf266c0 JG |
3300 | } |
3301 | ||
d324faf7 | 3302 | name = node_content; |
dcf266c0 JG |
3303 | } else if (!domains_node && !strcmp((const char *) node->name, |
3304 | config_element_domains)) { | |
3305 | /* domains */ | |
3306 | domains_node = node; | |
3307 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3308 | config_element_started)) { | |
3309 | /* started */ | |
3310 | xmlChar *node_content = xmlNodeGetContent(node); | |
3311 | if (!node_content) { | |
3312 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3313 | goto error; |
dcf266c0 JG |
3314 | } |
3315 | ||
3316 | ret = parse_bool(node_content, &started); | |
3317 | free(node_content); | |
3318 | if (ret) { | |
3319 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3320 | goto error; |
dcf266c0 JG |
3321 | } |
3322 | } else if (!output_node && !strcmp((const char *) node->name, | |
3323 | config_element_output)) { | |
3324 | /* output */ | |
3325 | output_node = node; | |
9e7c9f56 JR |
3326 | } else if (!shm_path && !strcmp((const char *) node->name, |
3327 | config_element_shared_memory_path)) { | |
3328 | /* shared memory path */ | |
3329 | xmlChar *node_content = xmlNodeGetContent(node); | |
3330 | if (!node_content) { | |
3331 | ret = -LTTNG_ERR_NOMEM; | |
3332 | goto error; | |
3333 | } | |
3334 | ||
3335 | shm_path = node_content; | |
dcf266c0 | 3336 | } else { |
259c2674 JD |
3337 | /* |
3338 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3339 | * rotation_timer_interval. |
3340 | */ | |
3341 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3342 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3343 | if (!strcmp((const char *) attributes_child->name, | |
3344 | config_element_snapshot_mode)) { | |
3345 | /* snapshot_mode */ | |
3346 | xmlChar *snapshot_mode_content = | |
3347 | xmlNodeGetContent(attributes_child); | |
3348 | if (!snapshot_mode_content) { | |
3349 | ret = -LTTNG_ERR_NOMEM; | |
3350 | goto error; | |
3351 | } | |
dcf266c0 | 3352 | |
90936dcf JD |
3353 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3354 | free(snapshot_mode_content); | |
3355 | if (ret) { | |
3356 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3357 | goto error; | |
3358 | } | |
3359 | } else if (!strcmp((const char *) attributes_child->name, | |
3360 | config_element_live_timer_interval)) { | |
3361 | /* live_timer_interval */ | |
3362 | xmlChar *timer_interval_content = | |
3363 | xmlNodeGetContent(attributes_child); | |
3364 | if (!timer_interval_content) { | |
3365 | ret = -LTTNG_ERR_NOMEM; | |
3366 | goto error; | |
3367 | } | |
dcf266c0 | 3368 | |
90936dcf JD |
3369 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3370 | free(timer_interval_content); | |
3371 | if (ret) { | |
3372 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3373 | goto error; | |
3374 | } | |
ce6176f2 JG |
3375 | } else if (!strcmp((const char *) attributes_child->name, |
3376 | config_element_rotation_schedules)) { | |
3377 | ret = process_session_rotation_schedules_node( | |
3378 | attributes_child, | |
3379 | &rotation_timer_interval, | |
3380 | &rotation_size); | |
90936dcf JD |
3381 | if (ret) { |
3382 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3383 | goto error; | |
3384 | } | |
259c2674 | 3385 | |
259c2674 JD |
3386 | } |
3387 | } | |
dcf266c0 JG |
3388 | } |
3389 | } | |
3390 | ||
3391 | if (!name) { | |
3392 | /* Mandatory attribute, as defined in the session XSD */ | |
3393 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3394 | goto error; |
dcf266c0 JG |
3395 | } |
3396 | ||
d324faf7 | 3397 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3398 | /* This is not the session we are looking for */ |
c2da8cde DG |
3399 | ret = -LTTNG_ERR_NO_SESSION; |
3400 | goto error; | |
dcf266c0 JG |
3401 | } |
3402 | ||
3403 | /* Init domains to create the session handles */ | |
3404 | for (node = xmlFirstElementChild(domains_node); node; | |
3405 | node = xmlNextElementSibling(node)) { | |
64803277 | 3406 | lttng_domain *domain = zmalloc<lttng_domain>(); |
dcf266c0 | 3407 | |
dcf266c0 JG |
3408 | if (!domain) { |
3409 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3410 | goto error; |
dcf266c0 JG |
3411 | } |
3412 | ||
3413 | ret = init_domain(node, domain); | |
3414 | if (ret) { | |
3415 | goto domain_init_error; | |
3416 | } | |
3417 | ||
3418 | switch (domain->type) { | |
3419 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3420 | if (kernel_domain) { |
3421 | /* Same domain seen twice, invalid! */ | |
3422 | goto domain_init_error; | |
3423 | } | |
dcf266c0 JG |
3424 | kernel_domain = domain; |
3425 | break; | |
3426 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3427 | if (ust_domain) { |
3428 | /* Same domain seen twice, invalid! */ | |
3429 | goto domain_init_error; | |
3430 | } | |
dcf266c0 JG |
3431 | ust_domain = domain; |
3432 | break; | |
3433 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3434 | if (jul_domain) { |
3435 | /* Same domain seen twice, invalid! */ | |
3436 | goto domain_init_error; | |
3437 | } | |
dcf266c0 JG |
3438 | jul_domain = domain; |
3439 | break; | |
5cdb6027 DG |
3440 | case LTTNG_DOMAIN_LOG4J: |
3441 | if (log4j_domain) { | |
3442 | /* Same domain seen twice, invalid! */ | |
3443 | goto domain_init_error; | |
3444 | } | |
3445 | log4j_domain = domain; | |
3446 | break; | |
0e115563 DG |
3447 | case LTTNG_DOMAIN_PYTHON: |
3448 | if (python_domain) { | |
3449 | /* Same domain seen twice, invalid! */ | |
3450 | goto domain_init_error; | |
3451 | } | |
3452 | python_domain = domain; | |
3453 | break; | |
dcf266c0 JG |
3454 | default: |
3455 | WARN("Invalid domain type"); | |
3456 | goto domain_init_error; | |
3457 | } | |
3458 | continue; | |
3459 | domain_init_error: | |
3460 | free(domain); | |
3461 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3462 | goto error; |
dcf266c0 JG |
3463 | } |
3464 | ||
2aaf5fc7 JR |
3465 | /* Apply overrides */ |
3466 | if (overrides) { | |
3467 | if (overrides->session_name) { | |
3468 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3469 | if (!name_override) { | |
3470 | ret = -LTTNG_ERR_NOMEM; | |
3471 | goto error; | |
3472 | } | |
3473 | ||
3474 | /* Overrides the session name to the provided name */ | |
3475 | xmlFree(name); | |
3476 | name = name_override; | |
3477 | } | |
3478 | } | |
3479 | ||
40b4155f | 3480 | if (overwrite) { |
dcf266c0 | 3481 | /* Destroy session if it exists */ |
d324faf7 | 3482 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3483 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3484 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3485 | goto error; |
dcf266c0 JG |
3486 | } |
3487 | } | |
3488 | ||
3489 | /* Create session type depending on output type */ | |
3490 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3491 | ret = create_snapshot_session((const char *) name, output_node, |
3492 | overrides); | |
dcf266c0 JG |
3493 | } else if (live_timer_interval && |
3494 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3495 | ret = create_session((const char *) name, |
1b08cbce | 3496 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3497 | } else { |
3498 | /* regular session */ | |
194dfca0 | 3499 | ret = create_session((const char *) name, |
1b08cbce | 3500 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3501 | } |
dcf266c0 | 3502 | if (ret) { |
c2da8cde | 3503 | goto error; |
dcf266c0 JG |
3504 | } |
3505 | ||
9e7c9f56 JR |
3506 | if (shm_path) { |
3507 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3508 | (const char *) shm_path); |
9e7c9f56 JR |
3509 | if (ret) { |
3510 | goto error; | |
3511 | } | |
3512 | } | |
3513 | ||
dcf266c0 JG |
3514 | for (node = xmlFirstElementChild(domains_node); node; |
3515 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3516 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3517 | if (ret) { |
3518 | goto end; | |
3519 | } | |
3520 | } | |
3521 | ||
66ea93b1 JG |
3522 | if (rotation_timer_interval) { |
3523 | ret = add_periodic_rotation((const char *) name, | |
3524 | rotation_timer_interval); | |
3525 | if (ret < 0) { | |
259c2674 JD |
3526 | goto error; |
3527 | } | |
66ea93b1 JG |
3528 | } |
3529 | if (rotation_size) { | |
3530 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3531 | rotation_size); |
66ea93b1 | 3532 | if (ret < 0) { |
259c2674 JD |
3533 | goto error; |
3534 | } | |
3535 | } | |
3536 | ||
dcf266c0 | 3537 | if (started) { |
d324faf7 | 3538 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3539 | if (ret) { |
3540 | goto end; | |
3541 | } | |
3542 | } | |
c2da8cde | 3543 | |
dcf266c0 | 3544 | end: |
b2579dc1 | 3545 | if (ret < 0) { |
d324faf7 JG |
3546 | ERR("Failed to load session %s: %s", (const char *) name, |
3547 | lttng_strerror(ret)); | |
3548 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3549 | } |
3550 | ||
c2da8cde | 3551 | error: |
dcf266c0 JG |
3552 | free(kernel_domain); |
3553 | free(ust_domain); | |
3554 | free(jul_domain); | |
5cdb6027 | 3555 | free(log4j_domain); |
135a3893 | 3556 | free(python_domain); |
d324faf7 | 3557 | xmlFree(name); |
9e7c9f56 | 3558 | xmlFree(shm_path); |
dcf266c0 JG |
3559 | return ret; |
3560 | } | |
3561 | ||
cf53c06d DG |
3562 | /* |
3563 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3564 | * Return -1 if the path is EPERM. | |
3565 | */ | |
3566 | static int validate_file_read_creds(const char *path) | |
3567 | { | |
3568 | int ret; | |
3569 | ||
a0377dfe | 3570 | LTTNG_ASSERT(path); |
cf53c06d DG |
3571 | |
3572 | /* Can we read the file. */ | |
3573 | ret = access(path, R_OK); | |
3574 | if (!ret) { | |
3575 | goto valid; | |
3576 | } | |
3577 | if (errno == EACCES) { | |
3578 | return -1; | |
3579 | } else { | |
3580 | /* Invalid. */ | |
3581 | return 0; | |
3582 | } | |
3583 | valid: | |
3584 | return 1; | |
3585 | } | |
3586 | ||
dcf266c0 JG |
3587 | static |
3588 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3589 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3590 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3591 | { |
3592 | int ret, session_found = !session_name; | |
3593 | xmlDocPtr doc = NULL; | |
3594 | xmlNodePtr sessions_node; | |
3595 | xmlNodePtr session_node; | |
dcf266c0 | 3596 | |
a0377dfe FD |
3597 | LTTNG_ASSERT(path); |
3598 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3599 | |
cf53c06d DG |
3600 | ret = validate_file_read_creds(path); |
3601 | if (ret != 1) { | |
3602 | if (ret == -1) { | |
3603 | ret = -LTTNG_ERR_EPERM; | |
3604 | } else { | |
3605 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3606 | } | |
dcf266c0 JG |
3607 | goto end; |
3608 | } | |
3609 | ||
3610 | doc = xmlParseFile(path); | |
3611 | if (!doc) { | |
3612 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3613 | goto end; | |
3614 | } | |
3615 | ||
3616 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3617 | if (ret) { | |
3618 | ERR("Session configuration file validation failed"); | |
3619 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3620 | goto end; | |
3621 | } | |
3622 | ||
3623 | sessions_node = xmlDocGetRootElement(doc); | |
3624 | if (!sessions_node) { | |
55c9e7ca | 3625 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3626 | goto end; |
3627 | } | |
3628 | ||
3629 | for (session_node = xmlFirstElementChild(sessions_node); | |
3630 | session_node; session_node = | |
3631 | xmlNextElementSibling(session_node)) { | |
3632 | ret = process_session_node(session_node, | |
1b08cbce | 3633 | session_name, overwrite, overrides); |
317ea246 JG |
3634 | if (!session_name && ret) { |
3635 | /* Loading error occurred. */ | |
3636 | goto end; | |
3637 | } else if (session_name) { | |
3638 | if (ret == 0) { | |
3639 | /* Target session found and loaded */ | |
3640 | session_found = 1; | |
3641 | break; | |
3642 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3643 | /* | |
3644 | * Ignore this error, we are looking for a | |
3645 | * specific session. | |
3646 | */ | |
3647 | ret = 0; | |
3648 | } else { | |
3649 | /* Loading error occurred. */ | |
3650 | goto end; | |
3651 | } | |
dcf266c0 JG |
3652 | } |
3653 | } | |
3654 | end: | |
3655 | xmlFreeDoc(doc); | |
3656 | if (!ret) { | |
a96bc65d | 3657 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3658 | } |
3659 | return ret; | |
3660 | } | |
3661 | ||
3662 | static | |
3663 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3664 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3665 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3666 | { |
3667 | int ret, session_found = !session_name; | |
dcf266c0 | 3668 | DIR *directory = NULL; |
cce35f91 JG |
3669 | struct lttng_dynamic_buffer file_path; |
3670 | size_t path_len; | |
dcf266c0 | 3671 | |
a0377dfe FD |
3672 | LTTNG_ASSERT(path); |
3673 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3674 | path_len = strlen(path); |
3675 | lttng_dynamic_buffer_init(&file_path); | |
3676 | if (path_len >= LTTNG_PATH_MAX) { | |
3677 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3678 | path, path_len, LTTNG_PATH_MAX); | |
3679 | ret = -LTTNG_ERR_INVALID; | |
3680 | goto end; | |
3681 | } | |
dcf266c0 | 3682 | |
4af16958 DG |
3683 | directory = opendir(path); |
3684 | if (!directory) { | |
11143783 DG |
3685 | switch (errno) { |
3686 | case ENOTDIR: | |
0f0a81b5 DG |
3687 | /* Try the file loading. */ |
3688 | break; | |
11143783 DG |
3689 | case ENOENT: |
3690 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3691 | goto end; | |
3692 | default: | |
0f0a81b5 DG |
3693 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3694 | goto end; | |
4af16958 | 3695 | } |
dcf266c0 | 3696 | } |
4af16958 | 3697 | if (directory) { |
cce35f91 | 3698 | size_t file_path_root_len; |
dcf266c0 | 3699 | |
cce35f91 JG |
3700 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3701 | LTTNG_PATH_MAX); | |
3702 | if (ret) { | |
3703 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3704 | goto end; |
3705 | } | |
3706 | ||
cce35f91 JG |
3707 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3708 | if (ret) { | |
dcf266c0 | 3709 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3710 | goto end; |
3711 | } | |
3712 | ||
cce35f91 JG |
3713 | if (file_path.data[file_path.size - 1] != '/') { |
3714 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3715 | if (ret) { | |
3716 | ret = -LTTNG_ERR_NOMEM; | |
3717 | goto end; | |
3718 | } | |
dcf266c0 | 3719 | } |
cce35f91 | 3720 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3721 | |
3722 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3723 | for (;;) { |
3724 | size_t file_name_len; | |
3725 | struct dirent *result; | |
3726 | ||
3727 | /* | |
3728 | * When the end of the directory stream is reached, NULL | |
3729 | * is returned and errno is kept unchanged. When an | |
3730 | * error occurs, NULL is returned and errno is set | |
3731 | * accordingly. To distinguish between the two, set | |
3732 | * errno to zero before calling readdir(). | |
3733 | * | |
3734 | * On success, readdir() returns a pointer to a dirent | |
3735 | * structure. This structure may be statically | |
3736 | * allocated, do not attempt to free(3) it. | |
3737 | */ | |
3738 | errno = 0; | |
3739 | result = readdir(directory); | |
3740 | ||
ff86d8d0 | 3741 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3742 | if (!result) { |
3743 | if (errno) { | |
3744 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3745 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3746 | goto end; | |
3747 | } | |
3748 | break; | |
3749 | } | |
3750 | ||
3751 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3752 | |
3753 | if (file_name_len <= | |
3754 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3755 | continue; | |
3756 | } | |
3757 | ||
cce35f91 JG |
3758 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3759 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3760 | result->d_name, | |
3761 | /* +1 to account for NULL terminator. */ | |
3762 | file_path.size + file_name_len + 1, | |
3763 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3764 | continue; |
3765 | } | |
3766 | ||
cce35f91 | 3767 | /* Does the file end with .lttng? */ |
dcf266c0 | 3768 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3769 | result->d_name + file_name_len - sizeof( |
3770 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3771 | continue; |
3772 | } | |
3773 | ||
cce35f91 JG |
3774 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3775 | file_name_len + 1); | |
3776 | if (ret) { | |
3777 | ret = -LTTNG_ERR_NOMEM; | |
3778 | goto end; | |
3779 | } | |
dcf266c0 | 3780 | |
cce35f91 | 3781 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3782 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3783 | if (session_name && |
3784 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3785 | session_found = 1; |
3786 | break; | |
3787 | } | |
55c9e7ca JR |
3788 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3789 | goto end; | |
3790 | } | |
cce35f91 JG |
3791 | /* |
3792 | * Reset the buffer's size to the location of the | |
3793 | * path's trailing '/'. | |
3794 | */ | |
3795 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3796 | file_path_root_len); | |
3797 | if (ret) { | |
3798 | ret = -LTTNG_ERR_UNK; | |
3799 | goto end; | |
3800 | } | |
dcf266c0 | 3801 | } |
dcf266c0 JG |
3802 | } else { |
3803 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3804 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3805 | if (ret) { |
3806 | goto end; | |
dcf266c0 | 3807 | } |
55c9e7ca | 3808 | session_found = 1; |
dcf266c0 JG |
3809 | } |
3810 | ||
55c9e7ca | 3811 | ret = 0; |
dcf266c0 JG |
3812 | end: |
3813 | if (directory) { | |
3814 | if (closedir(directory)) { | |
3815 | PERROR("closedir"); | |
3816 | } | |
3817 | } | |
55c9e7ca JR |
3818 | if (!ret && !session_found) { |
3819 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3820 | } |
cce35f91 | 3821 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3822 | return ret; |
3823 | } | |
3824 | ||
ab38c13f DG |
3825 | /* |
3826 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3827 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3828 | */ |
3829 | static int validate_path_creds(const char *path) | |
3830 | { | |
3831 | int ret, uid = getuid(); | |
3832 | struct stat buf; | |
3833 | ||
a0377dfe | 3834 | LTTNG_ASSERT(path); |
ab38c13f | 3835 | |
cf53c06d | 3836 | if (uid == 0) { |
ab38c13f DG |
3837 | goto valid; |
3838 | } | |
3839 | ||
3840 | ret = stat(path, &buf); | |
3841 | if (ret < 0) { | |
3842 | if (errno != ENOENT) { | |
3843 | PERROR("stat"); | |
3844 | } | |
ab38c13f DG |
3845 | goto valid; |
3846 | } | |
3847 | ||
3848 | if (buf.st_uid != uid) { | |
3849 | goto invalid; | |
3850 | } | |
3851 | ||
3852 | valid: | |
ab38c13f | 3853 | return 1; |
cf53c06d DG |
3854 | invalid: |
3855 | return 0; | |
ab38c13f DG |
3856 | } |
3857 | ||
dcf266c0 | 3858 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
3859 | int overwrite, unsigned int autoload, |
3860 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3861 | { |
3862 | int ret; | |
6c66fa0f | 3863 | bool session_loaded = false; |
cf53c06d | 3864 | const char *path_ptr = NULL; |
1c9a0b0e | 3865 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3866 | |
3867 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3868 | if (ret) { | |
3869 | goto end; | |
3870 | } | |
3871 | ||
3872 | if (!path) { | |
4f00620d | 3873 | const char *home_path; |
ab38c13f DG |
3874 | const char *sys_path; |
3875 | ||
dcf266c0 | 3876 | /* Try home path */ |
ab38c13f | 3877 | home_path = utils_get_home_dir(); |
dcf266c0 | 3878 | if (home_path) { |
db8196db | 3879 | char path_buf[PATH_MAX]; |
dcf266c0 | 3880 | |
d4fcf703 DG |
3881 | /* |
3882 | * Try user session configuration path. Ignore error here so we can | |
3883 | * continue loading the system wide sessions. | |
3884 | */ | |
ab38c13f | 3885 | if (autoload) { |
db8196db SM |
3886 | ret = snprintf(path_buf, sizeof(path_buf), |
3887 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3888 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3889 | home_path); | |
cf53c06d DG |
3890 | if (ret < 0) { |
3891 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3892 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3893 | goto end; |
3894 | } | |
3895 | ||
3896 | /* | |
3897 | * Credentials are only validated for the autoload in order to | |
3898 | * avoid any user session daemon to try to load kernel sessions | |
3899 | * automatically and failing all the times. | |
3900 | */ | |
db8196db | 3901 | ret = validate_path_creds(path_buf); |
cf53c06d | 3902 | if (ret) { |
db8196db | 3903 | path_ptr = path_buf; |
cf53c06d | 3904 | } |
ab38c13f | 3905 | } else { |
db8196db SM |
3906 | ret = snprintf(path_buf, sizeof(path_buf), |
3907 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3908 | home_path); | |
cf53c06d DG |
3909 | if (ret < 0) { |
3910 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3911 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3912 | goto end; |
3913 | } | |
db8196db | 3914 | path_ptr = path_buf; |
ab38c13f | 3915 | } |
cf53c06d DG |
3916 | if (path_ptr) { |
3917 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3918 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3919 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3920 | goto end; | |
3921 | } | |
3922 | /* | |
3923 | * Continue even if the session was found since we have to try | |
3924 | * the system wide sessions. | |
3925 | */ | |
6c66fa0f | 3926 | session_loaded = true; |
ab38c13f | 3927 | } |
d4fcf703 | 3928 | } |
ab38c13f | 3929 | |
cf53c06d DG |
3930 | /* Reset path pointer for the system wide dir. */ |
3931 | path_ptr = NULL; | |
3932 | ||
d4fcf703 DG |
3933 | /* Try system wide configuration directory. */ |
3934 | if (autoload) { | |
3935 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3936 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3937 | ret = validate_path_creds(sys_path); |
3938 | if (ret) { | |
3939 | path_ptr = sys_path; | |
3940 | } | |
d4fcf703 | 3941 | } else { |
cf53c06d DG |
3942 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3943 | path_ptr = sys_path; | |
d4fcf703 DG |
3944 | } |
3945 | ||
cf53c06d DG |
3946 | if (path_ptr) { |
3947 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3948 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3949 | if (!ret) { |
3950 | session_loaded = true; | |
3951 | } | |
55c9e7ca JR |
3952 | } else { |
3953 | ret = 0; | |
dcf266c0 JG |
3954 | } |
3955 | } else { | |
3956 | ret = access(path, F_OK); | |
3957 | if (ret < 0) { | |
3958 | PERROR("access"); | |
3959 | switch (errno) { | |
3960 | case ENOENT: | |
3961 | ret = -LTTNG_ERR_INVALID; | |
3962 | WARN("Session configuration path does not exist."); | |
3963 | break; | |
3964 | case EACCES: | |
3965 | ret = -LTTNG_ERR_EPERM; | |
3966 | break; | |
3967 | default: | |
3968 | ret = -LTTNG_ERR_UNK; | |
3969 | break; | |
3970 | } | |
3971 | goto end; | |
3972 | } | |
3973 | ||
3974 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3975 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3976 | } |
3977 | end: | |
3978 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3979 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3980 | /* | |
3981 | * Don't report an error if no sessions are found when called | |
3982 | * without a session_name or a search path. | |
3983 | */ | |
3984 | ret = 0; | |
3985 | } | |
6c66fa0f JG |
3986 | |
3987 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3988 | /* A matching session was found in one of the search paths. */ | |
3989 | ret = 0; | |
3990 | } | |
dcf266c0 JG |
3991 | return ret; |
3992 | } | |
56766c75 JG |
3993 | |
3994 | static | |
3995 | void __attribute__((destructor)) session_config_exit(void) | |
3996 | { | |
3997 | xmlCleanupParser(); | |
3998 | } |