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 | ||
dcf266c0 | 1152 | static |
1b08cbce JR |
1153 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1154 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1155 | { |
1156 | int ret; | |
fbc3f258 | 1157 | enum lttng_error_code ret_code; |
dcf266c0 JG |
1158 | xmlNodePtr node = NULL; |
1159 | xmlNodePtr snapshot_output_list_node; | |
1160 | xmlNodePtr snapshot_output_node; | |
fbc3f258 | 1161 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1162 | |
a0377dfe | 1163 | LTTNG_ASSERT(session_name); |
fbc3f258 | 1164 | LTTNG_ASSERT(output_node); |
dcf266c0 | 1165 | |
fbc3f258 JR |
1166 | /* |
1167 | * Use a descriptor without output since consumer output size is not | |
1168 | * exposed by the session descriptor api. | |
1169 | */ | |
1170 | session_descriptor = lttng_session_descriptor_snapshot_create(session_name); | |
1171 | if (session_descriptor == nullptr) { | |
1172 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
1173 | goto end; |
1174 | } | |
1175 | ||
fbc3f258 JR |
1176 | ret_code = lttng_create_session_ext(session_descriptor); |
1177 | if (ret_code != LTTNG_OK) { | |
1178 | ret = -ret_code; | |
dcf266c0 JG |
1179 | goto end; |
1180 | } | |
1181 | ||
1182 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1183 | ||
1184 | /* Parse and create snapshot outputs */ | |
dcf266c0 JG |
1185 | for (snapshot_output_node = |
1186 | xmlFirstElementChild(snapshot_output_list_node); | |
1187 | snapshot_output_node; snapshot_output_node = | |
1188 | xmlNextElementSibling(snapshot_output_node)) { | |
1189 | char *name = NULL; | |
1190 | uint64_t max_size = UINT64_MAX; | |
1c9a0b0e | 1191 | struct consumer_output output = {}; |
dcf266c0 | 1192 | struct lttng_snapshot_output *snapshot_output = NULL; |
1b08cbce JR |
1193 | const char *control_uri = NULL; |
1194 | const char *data_uri = NULL; | |
1195 | const char *path = NULL; | |
dcf266c0 JG |
1196 | |
1197 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1198 | node = xmlNextElementSibling(node)) { | |
1199 | if (!strcmp((const char *) node->name, | |
1200 | config_element_name)) { | |
1201 | /* name */ | |
1202 | name = (char *) xmlNodeGetContent(node); | |
1203 | if (!name) { | |
1204 | ret = -LTTNG_ERR_NOMEM; | |
1205 | goto error_snapshot_output; | |
1206 | } | |
1207 | } else if (!strcmp((const char *) node->name, | |
1208 | config_element_max_size)) { | |
1209 | xmlChar *content = xmlNodeGetContent(node); | |
1210 | ||
1211 | /* max_size */ | |
1212 | if (!content) { | |
1213 | ret = -LTTNG_ERR_NOMEM; | |
1214 | goto error_snapshot_output; | |
1215 | } | |
1216 | ret = parse_uint(content, &max_size); | |
1217 | free(content); | |
1218 | if (ret) { | |
1219 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1220 | goto error_snapshot_output; | |
1221 | } | |
1222 | } else { | |
1223 | /* consumer_output */ | |
1224 | ret = process_consumer_output(node, &output); | |
1225 | if (ret) { | |
1226 | goto error_snapshot_output; | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | ||
21a3f144 JR |
1231 | control_uri = output.control_uri; |
1232 | data_uri = output.data_uri; | |
1233 | path = output.path; | |
1234 | ||
1b08cbce JR |
1235 | if (overrides) { |
1236 | if (overrides->path_url) { | |
1b08cbce | 1237 | path = overrides->path_url; |
21a3f144 JR |
1238 | /* Control/data_uri are null */ |
1239 | control_uri = NULL; | |
1240 | data_uri = NULL; | |
1b08cbce JR |
1241 | } else { |
1242 | if (overrides->ctrl_url) { | |
1b08cbce | 1243 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1244 | /* path is null */ |
1245 | path = NULL; | |
1b08cbce JR |
1246 | } |
1247 | if (overrides->data_url) { | |
1b08cbce | 1248 | data_uri = overrides->data_url; |
21a3f144 JR |
1249 | /* path is null */ |
1250 | path = NULL; | |
1b08cbce JR |
1251 | } |
1252 | } | |
1b08cbce JR |
1253 | } |
1254 | ||
dcf266c0 JG |
1255 | snapshot_output = lttng_snapshot_output_create(); |
1256 | if (!snapshot_output) { | |
1257 | ret = -LTTNG_ERR_NOMEM; | |
1258 | goto error_snapshot_output; | |
1259 | } | |
1260 | ||
1261 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1262 | if (ret) { | |
1263 | goto error_snapshot_output; | |
1264 | } | |
1265 | ||
1266 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1267 | if (ret) { | |
1268 | goto error_snapshot_output; | |
1269 | } | |
1270 | ||
1b08cbce JR |
1271 | if (path) { |
1272 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1273 | snapshot_output); |
1274 | if (ret) { | |
1275 | goto error_snapshot_output; | |
1276 | } | |
1277 | } else { | |
1b08cbce JR |
1278 | if (control_uri) { |
1279 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1280 | snapshot_output); |
1281 | if (ret) { | |
1282 | goto error_snapshot_output; | |
1283 | } | |
1284 | } | |
1285 | ||
1b08cbce JR |
1286 | if (data_uri) { |
1287 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1288 | snapshot_output); |
1289 | if (ret) { | |
1290 | goto error_snapshot_output; | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1296 | error_snapshot_output: | |
1297 | free(name); | |
1298 | free(output.path); | |
1299 | free(output.control_uri); | |
1300 | free(output.data_uri); | |
1301 | lttng_snapshot_output_destroy(snapshot_output); | |
1302 | if (ret) { | |
1303 | goto end; | |
1304 | } | |
1305 | } | |
1306 | end: | |
fbc3f258 | 1307 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1308 | return ret; |
1309 | } | |
1310 | ||
1311 | static | |
1312 | int create_session(const char *name, | |
dcf266c0 | 1313 | xmlNodePtr output_node, |
1b08cbce JR |
1314 | uint64_t live_timer_interval, |
1315 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 | 1316 | { |
fbc3f258 JR |
1317 | int ret = 0; |
1318 | enum lttng_error_code ret_code; | |
1c9a0b0e | 1319 | struct consumer_output output = {}; |
dcf266c0 | 1320 | xmlNodePtr consumer_output_node; |
1b08cbce JR |
1321 | const char *control_uri = NULL; |
1322 | const char *data_uri = NULL; | |
1323 | const char *path = NULL; | |
fbc3f258 | 1324 | struct lttng_session_descriptor *session_descriptor = nullptr; |
dcf266c0 | 1325 | |
a0377dfe | 1326 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1327 | |
1328 | if (output_node) { | |
1329 | consumer_output_node = xmlFirstElementChild(output_node); | |
1330 | if (!consumer_output_node) { | |
1331 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | if (strcmp((const char *) consumer_output_node->name, | |
1336 | config_element_consumer_output)) { | |
1337 | WARN("Invalid output type, expected %s node", | |
1338 | config_element_consumer_output); | |
1339 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1340 | goto end; | |
1341 | } | |
1342 | ||
1343 | ret = process_consumer_output(consumer_output_node, &output); | |
1344 | if (ret) { | |
1345 | goto end; | |
1346 | } | |
1347 | } | |
1348 | ||
21a3f144 JR |
1349 | control_uri = output.control_uri; |
1350 | data_uri = output.data_uri; | |
1351 | path = output.path; | |
1352 | ||
1b08cbce JR |
1353 | /* Check for override and apply them */ |
1354 | if (overrides) { | |
1355 | if (overrides->path_url) { | |
1b08cbce | 1356 | path = overrides->path_url; |
21a3f144 JR |
1357 | /* control/data_uri are null */; |
1358 | control_uri = NULL; | |
1359 | data_uri = NULL; | |
1b08cbce JR |
1360 | } else { |
1361 | if (overrides->ctrl_url) { | |
1b08cbce | 1362 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1363 | /* path is null */ |
1364 | path = NULL; | |
1b08cbce JR |
1365 | } |
1366 | if (overrides->data_url) { | |
1b08cbce | 1367 | data_uri = overrides->data_url; |
21a3f144 JR |
1368 | /* path is null */ |
1369 | path = NULL; | |
1b08cbce JR |
1370 | } |
1371 | } | |
1b08cbce JR |
1372 | } |
1373 | ||
1374 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { | |
dcf266c0 JG |
1375 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1376 | goto end; | |
1377 | } | |
1378 | ||
1b08cbce | 1379 | if (control_uri || data_uri) { |
dcf266c0 JG |
1380 | /* network destination */ |
1381 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1382 | /* |
1383 | * URLs are provided for sure since the test above make sure that | |
1384 | * with a live timer the data and control URIs are provided. So, | |
1385 | * NULL is passed here and will be set right after. | |
1386 | */ | |
fbc3f258 JR |
1387 | session_descriptor = lttng_session_descriptor_live_network_create( |
1388 | name, control_uri, data_uri, live_timer_interval); | |
dcf266c0 | 1389 | } else { |
fbc3f258 JR |
1390 | session_descriptor = lttng_session_descriptor_network_create( |
1391 | name, control_uri, data_uri); | |
dcf266c0 | 1392 | } |
95681498 | 1393 | |
fbc3f258 JR |
1394 | } else if (path != nullptr) { |
1395 | session_descriptor = lttng_session_descriptor_local_create(name, path); | |
dcf266c0 | 1396 | } else { |
fbc3f258 JR |
1397 | /* No output */ |
1398 | session_descriptor = lttng_session_descriptor_create(name); | |
1399 | } | |
1400 | ||
1401 | if (session_descriptor == nullptr) { | |
1402 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1403 | goto end; | |
dcf266c0 | 1404 | } |
fbc3f258 JR |
1405 | |
1406 | ret_code = lttng_create_session_ext(session_descriptor); | |
1407 | if (ret_code != LTTNG_OK) { | |
1408 | ret = -ret_code; | |
1409 | goto end; | |
1410 | } | |
1411 | ||
dcf266c0 JG |
1412 | end: |
1413 | free(output.path); | |
1414 | free(output.control_uri); | |
1415 | free(output.data_uri); | |
fbc3f258 | 1416 | lttng_session_descriptor_destroy(session_descriptor); |
dcf266c0 JG |
1417 | return ret; |
1418 | } | |
c1e83fb4 FD |
1419 | |
1420 | static | |
1421 | struct lttng_userspace_probe_location * | |
1422 | process_userspace_probe_function_attribute_node( | |
1423 | xmlNodePtr attribute_node) | |
1424 | { | |
c1e83fb4 | 1425 | xmlNodePtr function_attribute_node; |
717d2dba | 1426 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1427 | struct lttng_userspace_probe_location *location = NULL; |
1428 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1429 | ||
1430 | /* | |
1431 | * Process userspace probe location function attributes. The order of | |
1432 | * the fields are not guaranteed so we need to iterate over all fields | |
1433 | * and check at the end if everything we need for this location type is | |
1434 | * there. | |
1435 | */ | |
1436 | for (function_attribute_node = | |
1437 | xmlFirstElementChild(attribute_node); | |
1438 | function_attribute_node; | |
1439 | function_attribute_node = xmlNextElementSibling( | |
1440 | function_attribute_node)) { | |
1441 | /* Handle function name, binary path and lookup method. */ | |
1442 | if (!strcmp((const char *) function_attribute_node->name, | |
1443 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1444 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1445 | if (!function_name) { |
c1e83fb4 FD |
1446 | goto error; |
1447 | } | |
1448 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1449 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1450 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1451 | if (!binary_path) { |
c1e83fb4 FD |
1452 | goto error; |
1453 | } | |
1454 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1455 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1456 | char *lookup_method_name; |
c1e83fb4 | 1457 | |
717d2dba JG |
1458 | lookup_method_name = (char *) xmlNodeGetContent( |
1459 | function_attribute_node); | |
c1e83fb4 | 1460 | if (!lookup_method_name) { |
c1e83fb4 FD |
1461 | goto error; |
1462 | } | |
1463 | ||
1464 | /* | |
1465 | * function_default lookup method defaults to | |
1466 | * function_elf lookup method at the moment. | |
1467 | */ | |
1468 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1469 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1470 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1471 | if (!lookup_method) { | |
1472 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1473 | } |
1474 | } else { | |
717d2dba JG |
1475 | WARN("Unknown function lookup method"); |
1476 | } | |
1477 | ||
1478 | free(lookup_method_name); | |
1479 | if (!lookup_method) { | |
c1e83fb4 FD |
1480 | goto error; |
1481 | } | |
1482 | } else { | |
1483 | goto error; | |
1484 | } | |
1485 | ||
1486 | /* Check if all the necessary fields were found. */ | |
1487 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1488 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1489 | location = |
1490 | lttng_userspace_probe_location_function_create( | |
1491 | binary_path, function_name, | |
1492 | lookup_method); | |
717d2dba JG |
1493 | lookup_method = NULL; |
1494 | goto error; | |
c1e83fb4 FD |
1495 | } |
1496 | } | |
1497 | error: | |
717d2dba | 1498 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1499 | free(binary_path); |
1500 | free(function_name); | |
c1e83fb4 FD |
1501 | return location; |
1502 | } | |
1503 | ||
1504 | static | |
1505 | struct lttng_userspace_probe_location * | |
1506 | process_userspace_probe_tracepoint_attribute_node( | |
1507 | xmlNodePtr attribute_node) | |
1508 | { | |
c1e83fb4 | 1509 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1510 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1511 | struct lttng_userspace_probe_location *location = NULL; | |
1512 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1513 | ||
1514 | /* | |
1515 | * Process userspace probe location tracepoint attributes. The order of | |
1516 | * the fields are not guaranteed so we need to iterate over all fields | |
1517 | * and check at the end if everything we need for this location type is | |
1518 | * there. | |
1519 | */ | |
1520 | for (tracepoint_attribute_node = | |
1521 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1522 | tracepoint_attribute_node = xmlNextElementSibling( | |
1523 | tracepoint_attribute_node)) { | |
1524 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1525 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1526 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1527 | if (!probe_name) { |
c1e83fb4 FD |
1528 | goto error; |
1529 | } | |
1530 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1531 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1532 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1533 | if (!provider_name) { |
c1e83fb4 FD |
1534 | goto error; |
1535 | } | |
1536 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1537 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1538 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1539 | if (!binary_path) { |
c1e83fb4 FD |
1540 | goto error; |
1541 | } | |
1542 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1543 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1544 | char *lookup_method_name; |
c1e83fb4 | 1545 | |
717d2dba JG |
1546 | lookup_method_name = (char *) xmlNodeGetContent( |
1547 | tracepoint_attribute_node); | |
c1e83fb4 | 1548 | if (!lookup_method_name) { |
c1e83fb4 FD |
1549 | goto error; |
1550 | } | |
1551 | ||
1552 | if (!strcmp(lookup_method_name, | |
1553 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1554 | lookup_method = | |
1555 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1556 | if (!lookup_method) { | |
1557 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1558 | } |
1559 | } else { | |
717d2dba JG |
1560 | WARN("Unknown tracepoint lookup method"); |
1561 | } | |
1562 | ||
1563 | free(lookup_method_name); | |
1564 | if (!lookup_method) { | |
c1e83fb4 FD |
1565 | goto error; |
1566 | } | |
1567 | } else { | |
717d2dba | 1568 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1569 | goto error; |
1570 | } | |
1571 | ||
1572 | /* Check if all the necessary fields were found. */ | |
1573 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1574 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1575 | location = |
1576 | lttng_userspace_probe_location_tracepoint_create( | |
1577 | binary_path, provider_name, | |
1578 | probe_name, lookup_method); | |
6bd61b96 | 1579 | lookup_method = NULL; |
717d2dba | 1580 | goto error; |
c1e83fb4 FD |
1581 | } |
1582 | } | |
1583 | error: | |
717d2dba | 1584 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1585 | free(binary_path); |
c1e83fb4 | 1586 | free(provider_name); |
717d2dba | 1587 | free(probe_name); |
c1e83fb4 FD |
1588 | return location; |
1589 | } | |
1590 | ||
dcf266c0 JG |
1591 | static |
1592 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1593 | struct lttng_event_probe_attr *attr) | |
1594 | { | |
1595 | int ret; | |
1596 | ||
a0377dfe FD |
1597 | LTTNG_ASSERT(probe_attribute_node); |
1598 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1599 | |
1600 | if (!strcmp((const char *) probe_attribute_node->name, | |
1601 | config_element_address)) { | |
1602 | xmlChar *content; | |
1603 | uint64_t addr = 0; | |
1604 | ||
1605 | /* addr */ | |
1606 | content = xmlNodeGetContent(probe_attribute_node); | |
1607 | if (!content) { | |
1608 | ret = -LTTNG_ERR_NOMEM; | |
1609 | goto end; | |
1610 | } | |
1611 | ||
1612 | ret = parse_uint(content, &addr); | |
1613 | free(content); | |
1614 | if (ret) { | |
1615 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1616 | goto end; | |
1617 | } | |
1618 | ||
1619 | attr->addr = addr; | |
1620 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1621 | config_element_offset)) { | |
1622 | xmlChar *content; | |
1623 | uint64_t offset = 0; | |
1624 | ||
1625 | /* offset */ | |
1626 | content = xmlNodeGetContent(probe_attribute_node); | |
1627 | if (!content) { | |
1628 | ret = -LTTNG_ERR_NOMEM; | |
1629 | goto end; | |
1630 | } | |
1631 | ||
1632 | ret = parse_uint(content, &offset); | |
1633 | free(content); | |
1634 | if (ret) { | |
1635 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1636 | goto end; | |
1637 | } | |
1638 | ||
1639 | attr->offset = offset; | |
1640 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1641 | config_element_symbol_name)) { | |
1642 | xmlChar *content; | |
dcf266c0 JG |
1643 | |
1644 | /* symbol_name */ | |
1645 | content = xmlNodeGetContent(probe_attribute_node); | |
1646 | if (!content) { | |
1647 | ret = -LTTNG_ERR_NOMEM; | |
1648 | goto end; | |
1649 | } | |
1650 | ||
d2e67842 JG |
1651 | ret = lttng_strncpy(attr->symbol_name, |
1652 | (const char *) content, | |
1653 | LTTNG_SYMBOL_NAME_LEN); | |
1654 | if (ret == -1) { | |
1655 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1656 | (const char *) content, | |
1657 | strlen((const char *) content), | |
1658 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1659 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1660 | free(content); | |
1661 | goto end; | |
1662 | } | |
dcf266c0 JG |
1663 | free(content); |
1664 | } | |
1665 | ret = 0; | |
1666 | end: | |
1667 | return ret; | |
1668 | } | |
1669 | ||
1670 | static | |
1671 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1672 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1673 | { |
d7b645e2 | 1674 | int ret = 0, i; |
dcf266c0 | 1675 | xmlNodePtr node; |
91744e14 | 1676 | struct lttng_event *event; |
dcf266c0 JG |
1677 | char **exclusions = NULL; |
1678 | unsigned long exclusion_count = 0; | |
1679 | char *filter_expression = NULL; | |
1680 | ||
a0377dfe FD |
1681 | LTTNG_ASSERT(event_node); |
1682 | LTTNG_ASSERT(handle); | |
1683 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1684 | |
91744e14 FD |
1685 | event = lttng_event_create(); |
1686 | if (!event) { | |
1687 | ret = -LTTNG_ERR_NOMEM; | |
1688 | goto end; | |
1689 | } | |
dcf266c0 | 1690 | |
f40eba3d JG |
1691 | /* Initialize default log level which varies by domain */ |
1692 | switch (handle->domain.type) | |
1693 | { | |
1694 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1695 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1696 | break; |
1697 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1698 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1699 | break; |
1700 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1701 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1702 | break; |
1703 | case LTTNG_DOMAIN_UST: | |
1704 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1705 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1706 | break; |
1707 | default: | |
a0377dfe | 1708 | abort(); |
f40eba3d JG |
1709 | } |
1710 | ||
dcf266c0 JG |
1711 | for (node = xmlFirstElementChild(event_node); node; |
1712 | node = xmlNextElementSibling(node)) { | |
1713 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1714 | xmlChar *content; | |
dcf266c0 JG |
1715 | |
1716 | /* name */ | |
1717 | content = xmlNodeGetContent(node); | |
1718 | if (!content) { | |
1719 | ret = -LTTNG_ERR_NOMEM; | |
1720 | goto end; | |
1721 | } | |
1722 | ||
91744e14 | 1723 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1724 | (const char *) content, |
1725 | LTTNG_SYMBOL_NAME_LEN); | |
1726 | if (ret == -1) { | |
1727 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1728 | (const char *) content, | |
1729 | strlen((const char *) content), | |
1730 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1731 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1732 | free(content); | |
1733 | goto end; | |
1734 | } | |
dcf266c0 JG |
1735 | free(content); |
1736 | } else if (!strcmp((const char *) node->name, | |
1737 | config_element_enabled)) { | |
1738 | xmlChar *content = xmlNodeGetContent(node); | |
1739 | ||
1740 | /* enabled */ | |
1741 | if (!content) { | |
1742 | ret = -LTTNG_ERR_NOMEM; | |
1743 | goto end; | |
1744 | } | |
1745 | ||
91744e14 | 1746 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1747 | free(content); |
1748 | if (ret) { | |
1749 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1750 | goto end; | |
1751 | } | |
1752 | } else if (!strcmp((const char *) node->name, | |
1753 | config_element_type)) { | |
1754 | xmlChar *content = xmlNodeGetContent(node); | |
1755 | ||
1756 | /* type */ | |
1757 | if (!content) { | |
1758 | ret = -LTTNG_ERR_NOMEM; | |
1759 | goto end; | |
1760 | } | |
1761 | ||
1762 | ret = get_event_type(content); | |
1763 | free(content); | |
1764 | if (ret < 0) { | |
1765 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
3afa94ae | 1769 | event->type = (lttng_event_type) ret; |
dcf266c0 JG |
1770 | } else if (!strcmp((const char *) node->name, |
1771 | config_element_loglevel_type)) { | |
1772 | xmlChar *content = xmlNodeGetContent(node); | |
1773 | ||
1774 | /* loglevel_type */ | |
1775 | if (!content) { | |
1776 | ret = -LTTNG_ERR_NOMEM; | |
1777 | goto end; | |
1778 | } | |
1779 | ||
1780 | ret = get_loglevel_type(content); | |
1781 | free(content); | |
1782 | if (ret < 0) { | |
1783 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1784 | goto end; | |
1785 | } | |
1786 | ||
3afa94ae | 1787 | event->loglevel_type = (lttng_loglevel_type) ret; |
dcf266c0 JG |
1788 | } else if (!strcmp((const char *) node->name, |
1789 | config_element_loglevel)) { | |
1790 | xmlChar *content; | |
1791 | int64_t loglevel = 0; | |
1792 | ||
1793 | /* loglevel */ | |
1794 | content = xmlNodeGetContent(node); | |
1795 | if (!content) { | |
1796 | ret = -LTTNG_ERR_NOMEM; | |
1797 | goto end; | |
1798 | } | |
1799 | ||
1800 | ret = parse_int(content, &loglevel); | |
1801 | free(content); | |
1802 | if (ret) { | |
1803 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1804 | goto end; | |
1805 | } | |
1806 | ||
1807 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1808 | WARN("loglevel out of range."); | |
1809 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1810 | goto end; | |
1811 | } | |
1812 | ||
91744e14 | 1813 | event->loglevel = loglevel; |
dcf266c0 JG |
1814 | } else if (!strcmp((const char *) node->name, |
1815 | config_element_filter)) { | |
1816 | xmlChar *content = | |
1817 | xmlNodeGetContent(node); | |
1818 | ||
1819 | /* filter */ | |
1820 | if (!content) { | |
1821 | ret = -LTTNG_ERR_NOMEM; | |
1822 | goto end; | |
1823 | } | |
1824 | ||
02d8ac3d | 1825 | free(filter_expression); |
dcf266c0 JG |
1826 | filter_expression = strdup((char *) content); |
1827 | free(content); | |
1828 | if (!filter_expression) { | |
1829 | ret = -LTTNG_ERR_NOMEM; | |
1830 | goto end; | |
1831 | } | |
1832 | } else if (!strcmp((const char *) node->name, | |
1833 | config_element_exclusions)) { | |
1834 | xmlNodePtr exclusion_node; | |
1835 | int exclusion_index = 0; | |
1836 | ||
1837 | /* exclusions */ | |
1838 | if (exclusions) { | |
1839 | /* | |
1840 | * Exclusions has already been initialized, | |
1841 | * invalid file. | |
1842 | */ | |
1843 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1844 | goto end; | |
1845 | } | |
1846 | ||
1847 | exclusion_count = xmlChildElementCount(node); | |
1848 | if (!exclusion_count) { | |
1849 | continue; | |
1850 | } | |
1851 | ||
64803277 | 1852 | exclusions = calloc<char *>(exclusion_count); |
dcf266c0 JG |
1853 | if (!exclusions) { |
1854 | exclusion_count = 0; | |
1855 | ret = -LTTNG_ERR_NOMEM; | |
1856 | goto end; | |
1857 | } | |
1858 | ||
1859 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1860 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1861 | xmlChar *content = | |
1862 | xmlNodeGetContent(exclusion_node); | |
1863 | ||
1864 | if (!content) { | |
1865 | ret = -LTTNG_ERR_NOMEM; | |
1866 | goto end; | |
1867 | } | |
1868 | ||
1869 | exclusions[exclusion_index] = strdup((const char *) content); | |
1870 | free(content); | |
1871 | if (!exclusions[exclusion_index]) { | |
1872 | ret = -LTTNG_ERR_NOMEM; | |
1873 | goto end; | |
1874 | } | |
1875 | exclusion_index++; | |
1876 | } | |
1877 | ||
91744e14 | 1878 | event->exclusion = 1; |
dcf266c0 JG |
1879 | } else if (!strcmp((const char *) node->name, |
1880 | config_element_attributes)) { | |
1881 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
1882 | ||
1883 | /* attributes */ | |
1884 | if (!attribute_node) { | |
1885 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1886 | goto end; | |
1887 | } | |
1888 | ||
c1e83fb4 | 1889 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
1890 | config_element_probe_attributes)) { |
1891 | xmlNodePtr probe_attribute_node; | |
1892 | ||
1893 | /* probe_attributes */ | |
1894 | for (probe_attribute_node = | |
1895 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
1896 | probe_attribute_node = xmlNextElementSibling( | |
1897 | probe_attribute_node)) { | |
1898 | ||
1899 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 1900 | &event->attr.probe); |
dcf266c0 JG |
1901 | if (ret) { |
1902 | goto end; | |
1903 | } | |
1904 | } | |
c1e83fb4 FD |
1905 | } else if (!strcmp((const char *) attribute_node->name, |
1906 | config_element_function_attributes)) { | |
dcf266c0 JG |
1907 | size_t sym_len; |
1908 | xmlChar *content; | |
1909 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
1910 | ||
1911 | /* function_attributes */ | |
1912 | content = xmlNodeGetContent(symbol_node); | |
1913 | if (!content) { | |
1914 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1915 | goto end; | |
1916 | } | |
1917 | ||
1918 | sym_len = strlen((char *) content); | |
1919 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
1920 | WARN("Function name too long."); | |
1921 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1922 | free(content); | |
1923 | goto end; | |
1924 | } | |
1925 | ||
d2e67842 | 1926 | ret = lttng_strncpy( |
91744e14 | 1927 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
1928 | (char *) content, sym_len); |
1929 | if (ret == -1) { | |
1930 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1931 | free(content); | |
1932 | goto end; | |
1933 | } | |
dcf266c0 | 1934 | free(content); |
c1e83fb4 FD |
1935 | } else if (!strcmp((const char *) attribute_node->name, |
1936 | config_element_userspace_probe_tracepoint_attributes)) { | |
1937 | struct lttng_userspace_probe_location *location; | |
1938 | ||
1939 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
1940 | if (!location) { | |
1941 | WARN("Error processing userspace probe tracepoint attribute"); | |
1942 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1943 | goto end; | |
1944 | } | |
1945 | ret = lttng_event_set_userspace_probe_location( | |
1946 | event, location); | |
1947 | if (ret) { | |
1948 | WARN("Error setting userspace probe location field"); | |
1949 | lttng_userspace_probe_location_destroy( | |
1950 | location); | |
1951 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1952 | goto end; | |
1953 | } | |
1954 | } else if (!strcmp((const char *) attribute_node->name, | |
1955 | config_element_userspace_probe_function_attributes)) { | |
1956 | struct lttng_userspace_probe_location *location; | |
1957 | ||
1958 | location = | |
1959 | process_userspace_probe_function_attribute_node( | |
1960 | attribute_node); | |
1961 | if (!location) { | |
1962 | WARN("Error processing userspace probe function attribute"); | |
1963 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1964 | goto end; | |
1965 | } | |
1966 | ||
1967 | ret = lttng_event_set_userspace_probe_location( | |
1968 | event, location); | |
1969 | if (ret) { | |
1970 | WARN("Error setting userspace probe location field"); | |
1971 | lttng_userspace_probe_location_destroy( | |
1972 | location); | |
1973 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1974 | goto end; | |
1975 | } | |
1976 | } else { | |
1977 | /* Unknown event attribute. */ | |
1978 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1979 | goto end; | |
dcf266c0 JG |
1980 | } |
1981 | } | |
1982 | } | |
1983 | ||
91744e14 FD |
1984 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
1985 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
1986 | filter_expression, exclusion_count, exclusions); |
1987 | if (ret < 0) { | |
91744e14 | 1988 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
1989 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1990 | goto end; | |
1991 | } | |
065321e9 | 1992 | } |
d2e67842 | 1993 | ret = 0; |
dcf266c0 JG |
1994 | end: |
1995 | for (i = 0; i < exclusion_count; i++) { | |
1996 | free(exclusions[i]); | |
1997 | } | |
1998 | ||
b33f872b | 1999 | lttng_event_destroy(event); |
dcf266c0 JG |
2000 | free(exclusions); |
2001 | free(filter_expression); | |
2002 | return ret; | |
2003 | } | |
2004 | ||
2005 | static | |
2006 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2007 | const char *channel_name) | |
2008 | { | |
2009 | int ret = 0; | |
d7b645e2 | 2010 | struct lttng_event event; |
dcf266c0 JG |
2011 | xmlNodePtr node; |
2012 | ||
a0377dfe FD |
2013 | LTTNG_ASSERT(events_node); |
2014 | LTTNG_ASSERT(handle); | |
2015 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2016 | |
2017 | for (node = xmlFirstElementChild(events_node); node; | |
2018 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2019 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2020 | if (ret) { |
2021 | goto end; | |
2022 | } | |
2023 | } | |
d7b645e2 JR |
2024 | |
2025 | /* | |
2026 | * Disable all events to enable only the necessary events. | |
2027 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2028 | * force this approach. | |
2029 | */ | |
2030 | memset(&event, 0, sizeof(event)); | |
2031 | event.loglevel = -1; | |
2032 | event.type = LTTNG_EVENT_ALL; | |
2033 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2034 | if (ret) { | |
2035 | goto end; | |
2036 | } | |
2037 | ||
2038 | for (node = xmlFirstElementChild(events_node); node; | |
2039 | node = xmlNextElementSibling(node)) { | |
2040 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2041 | if (ret) { | |
2042 | goto end; | |
2043 | } | |
2044 | } | |
2045 | ||
dcf266c0 JG |
2046 | end: |
2047 | return ret; | |
2048 | } | |
2049 | ||
2050 | static | |
2051 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2052 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2053 | xmlNodePtr *events_node) | |
2054 | { | |
2055 | int ret; | |
2056 | ||
a0377dfe FD |
2057 | LTTNG_ASSERT(attr_node); |
2058 | LTTNG_ASSERT(channel); | |
2059 | LTTNG_ASSERT(contexts_node); | |
2060 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2061 | |
2062 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2063 | xmlChar *content; | |
dcf266c0 JG |
2064 | |
2065 | /* name */ | |
2066 | content = xmlNodeGetContent(attr_node); | |
2067 | if (!content) { | |
2068 | ret = -LTTNG_ERR_NOMEM; | |
2069 | goto end; | |
2070 | } | |
2071 | ||
d2e67842 JG |
2072 | ret = lttng_strncpy(channel->name, |
2073 | (const char *) content, | |
2074 | LTTNG_SYMBOL_NAME_LEN); | |
2075 | if (ret == -1) { | |
2076 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2077 | (const char *) content, | |
2078 | strlen((const char *) content), | |
2079 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2080 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2081 | free(content); | |
2082 | goto end; | |
2083 | } | |
dcf266c0 JG |
2084 | free(content); |
2085 | } else if (!strcmp((const char *) attr_node->name, | |
2086 | config_element_enabled)) { | |
2087 | xmlChar *content; | |
2088 | int enabled; | |
2089 | ||
2090 | /* enabled */ | |
2091 | content = xmlNodeGetContent(attr_node); | |
2092 | if (!content) { | |
2093 | ret = -LTTNG_ERR_NOMEM; | |
2094 | goto end; | |
2095 | } | |
2096 | ||
2097 | ret = parse_bool(content, &enabled); | |
2098 | free(content); | |
2099 | if (ret) { | |
2100 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2101 | goto end; | |
2102 | } | |
2103 | ||
2104 | channel->enabled = enabled; | |
2105 | } else if (!strcmp((const char *) attr_node->name, | |
2106 | config_element_overwrite_mode)) { | |
2107 | xmlChar *content; | |
2108 | ||
2109 | /* overwrite_mode */ | |
2110 | content = xmlNodeGetContent(attr_node); | |
2111 | if (!content) { | |
2112 | ret = -LTTNG_ERR_NOMEM; | |
2113 | goto end; | |
2114 | } | |
2115 | ||
2116 | ret = get_overwrite_mode(content); | |
2117 | free(content); | |
2118 | if (ret < 0) { | |
2119 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2120 | goto end; | |
2121 | } | |
2122 | ||
2123 | channel->attr.overwrite = ret; | |
2124 | } else if (!strcmp((const char *) attr_node->name, | |
2125 | config_element_subbuf_size)) { | |
2126 | xmlChar *content; | |
2127 | ||
2128 | /* subbuffer_size */ | |
2129 | content = xmlNodeGetContent(attr_node); | |
2130 | if (!content) { | |
2131 | ret = -LTTNG_ERR_NOMEM; | |
2132 | goto end; | |
2133 | } | |
2134 | ||
2135 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2136 | free(content); | |
2137 | if (ret) { | |
2138 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2139 | goto end; | |
2140 | } | |
2141 | } else if (!strcmp((const char *) attr_node->name, | |
2142 | config_element_num_subbuf)) { | |
2143 | xmlChar *content; | |
2144 | ||
2145 | /* subbuffer_count */ | |
2146 | content = xmlNodeGetContent(attr_node); | |
2147 | if (!content) { | |
2148 | ret = -LTTNG_ERR_NOMEM; | |
2149 | goto end; | |
2150 | } | |
2151 | ||
2152 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2153 | free(content); | |
2154 | if (ret) { | |
2155 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2156 | goto end; | |
2157 | } | |
2158 | } else if (!strcmp((const char *) attr_node->name, | |
2159 | config_element_switch_timer_interval)) { | |
2160 | xmlChar *content; | |
2161 | uint64_t switch_timer_interval = 0; | |
2162 | ||
2163 | /* switch_timer_interval */ | |
2164 | content = xmlNodeGetContent(attr_node); | |
2165 | if (!content) { | |
2166 | ret = -LTTNG_ERR_NOMEM; | |
2167 | goto end; | |
2168 | } | |
2169 | ||
2170 | ret = parse_uint(content, &switch_timer_interval); | |
2171 | free(content); | |
2172 | if (ret) { | |
2173 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2174 | goto end; | |
2175 | } | |
2176 | ||
2177 | if (switch_timer_interval > UINT_MAX) { | |
2178 | WARN("switch_timer_interval out of range."); | |
2179 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2180 | goto end; | |
2181 | } | |
2182 | ||
2183 | channel->attr.switch_timer_interval = | |
2184 | switch_timer_interval; | |
2185 | } else if (!strcmp((const char *) attr_node->name, | |
2186 | config_element_read_timer_interval)) { | |
2187 | xmlChar *content; | |
2188 | uint64_t read_timer_interval = 0; | |
2189 | ||
2190 | /* read_timer_interval */ | |
2191 | content = xmlNodeGetContent(attr_node); | |
2192 | if (!content) { | |
2193 | ret = -LTTNG_ERR_NOMEM; | |
2194 | goto end; | |
2195 | } | |
2196 | ||
2197 | ret = parse_uint(content, &read_timer_interval); | |
2198 | free(content); | |
2199 | if (ret) { | |
2200 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2201 | goto end; | |
2202 | } | |
2203 | ||
2204 | if (read_timer_interval > UINT_MAX) { | |
2205 | WARN("read_timer_interval out of range."); | |
2206 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2207 | goto end; | |
2208 | } | |
2209 | ||
2210 | channel->attr.read_timer_interval = | |
2211 | read_timer_interval; | |
2212 | } else if (!strcmp((const char *) attr_node->name, | |
2213 | config_element_output_type)) { | |
2214 | xmlChar *content; | |
2215 | ||
2216 | /* output_type */ | |
2217 | content = xmlNodeGetContent(attr_node); | |
2218 | if (!content) { | |
2219 | ret = -LTTNG_ERR_NOMEM; | |
2220 | goto end; | |
2221 | } | |
2222 | ||
2223 | ret = get_output_type(content); | |
2224 | free(content); | |
2225 | if (ret < 0) { | |
2226 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2227 | goto end; | |
2228 | } | |
2229 | ||
3afa94ae | 2230 | channel->attr.output = (lttng_event_output) ret; |
dcf266c0 JG |
2231 | } else if (!strcmp((const char *) attr_node->name, |
2232 | config_element_tracefile_size)) { | |
2233 | xmlChar *content; | |
2234 | ||
2235 | /* tracefile_size */ | |
2236 | content = xmlNodeGetContent(attr_node); | |
2237 | if (!content) { | |
2238 | ret = -LTTNG_ERR_NOMEM; | |
2239 | goto end; | |
2240 | } | |
2241 | ||
2242 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2243 | free(content); | |
2244 | if (ret) { | |
2245 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2246 | goto end; | |
2247 | } | |
2248 | } else if (!strcmp((const char *) attr_node->name, | |
2249 | config_element_tracefile_count)) { | |
2250 | xmlChar *content; | |
2251 | ||
2252 | /* tracefile_count */ | |
2253 | content = xmlNodeGetContent(attr_node); | |
2254 | if (!content) { | |
2255 | ret = -LTTNG_ERR_NOMEM; | |
2256 | goto end; | |
2257 | } | |
2258 | ||
2259 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2260 | free(content); | |
2261 | if (ret) { | |
2262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2263 | goto end; | |
2264 | } | |
2265 | } else if (!strcmp((const char *) attr_node->name, | |
2266 | config_element_live_timer_interval)) { | |
2267 | xmlChar *content; | |
2268 | uint64_t live_timer_interval = 0; | |
2269 | ||
2270 | /* live_timer_interval */ | |
2271 | content = xmlNodeGetContent(attr_node); | |
2272 | if (!content) { | |
2273 | ret = -LTTNG_ERR_NOMEM; | |
2274 | goto end; | |
2275 | } | |
2276 | ||
2277 | ret = parse_uint(content, &live_timer_interval); | |
2278 | free(content); | |
2279 | if (ret) { | |
2280 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2281 | goto end; | |
2282 | } | |
2283 | ||
2284 | if (live_timer_interval > UINT_MAX) { | |
2285 | WARN("live_timer_interval out of range."); | |
2286 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2287 | goto end; | |
2288 | } | |
2289 | ||
2290 | channel->attr.live_timer_interval = | |
2291 | live_timer_interval; | |
4fc2b126 JR |
2292 | } else if (!strcmp((const char *) attr_node->name, |
2293 | config_element_monitor_timer_interval)) { | |
2294 | xmlChar *content; | |
2295 | uint64_t monitor_timer_interval = 0; | |
2296 | ||
2297 | /* monitor_timer_interval */ | |
2298 | content = xmlNodeGetContent(attr_node); | |
2299 | if (!content) { | |
2300 | ret = -LTTNG_ERR_NOMEM; | |
2301 | goto end; | |
2302 | } | |
2303 | ||
2304 | ret = parse_uint(content, &monitor_timer_interval); | |
2305 | free(content); | |
2306 | if (ret) { | |
2307 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2308 | goto end; | |
2309 | } | |
2310 | ||
2311 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2312 | monitor_timer_interval); | |
2313 | if (ret) { | |
2314 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2315 | goto end; | |
2316 | } | |
275472aa JR |
2317 | } else if (!strcmp((const char *) attr_node->name, |
2318 | config_element_blocking_timeout)) { | |
2319 | xmlChar *content; | |
2320 | int64_t blocking_timeout = 0; | |
2321 | ||
2322 | /* blocking_timeout */ | |
2323 | content = xmlNodeGetContent(attr_node); | |
2324 | if (!content) { | |
2325 | ret = -LTTNG_ERR_NOMEM; | |
2326 | goto end; | |
2327 | } | |
2328 | ||
2329 | ret = parse_int(content, &blocking_timeout); | |
2330 | free(content); | |
2331 | if (ret) { | |
2332 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2333 | goto end; | |
2334 | } | |
2335 | ||
2336 | ret = lttng_channel_set_blocking_timeout(channel, | |
2337 | blocking_timeout); | |
2338 | if (ret) { | |
2339 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2340 | goto end; | |
2341 | } | |
dcf266c0 JG |
2342 | } else if (!strcmp((const char *) attr_node->name, |
2343 | config_element_events)) { | |
2344 | /* events */ | |
2345 | *events_node = attr_node; | |
2346 | } else { | |
2347 | /* contexts */ | |
2348 | *contexts_node = attr_node; | |
2349 | } | |
2350 | ret = 0; | |
2351 | end: | |
2352 | return ret; | |
2353 | } | |
2354 | ||
2355 | static | |
2356 | int process_context_node(xmlNodePtr context_node, | |
2357 | struct lttng_handle *handle, const char *channel_name) | |
2358 | { | |
2359 | int ret; | |
2360 | struct lttng_event_context context; | |
2361 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2362 | ||
a0377dfe FD |
2363 | LTTNG_ASSERT(handle); |
2364 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2365 | |
2366 | if (!context_child_node) { | |
2367 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2368 | goto end; | |
2369 | } | |
2370 | ||
2371 | memset(&context, 0, sizeof(context)); | |
2372 | ||
2373 | if (!strcmp((const char *) context_child_node->name, | |
2374 | config_element_type)) { | |
2375 | /* type */ | |
2376 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2377 | |
dcf266c0 JG |
2378 | if (!content) { |
2379 | ret = -LTTNG_ERR_NOMEM; | |
2380 | goto end; | |
2381 | } | |
2382 | ||
2383 | ret = get_context_type(content); | |
2384 | free(content); | |
2385 | if (ret < 0) { | |
2386 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2387 | goto end; | |
2388 | } | |
2389 | ||
3afa94ae | 2390 | context.ctx = (lttng_event_context_type) ret; |
045fc617 JG |
2391 | } else if (!strcmp((const char *) context_child_node->name, |
2392 | config_element_context_perf)) { | |
2393 | /* perf */ | |
dcf266c0 JG |
2394 | xmlNodePtr perf_attr_node; |
2395 | ||
14ce5bd8 JG |
2396 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2397 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2398 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2399 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2400 | perf_attr_node; perf_attr_node = | |
2401 | xmlNextElementSibling(perf_attr_node)) { | |
2402 | if (!strcmp((const char *) perf_attr_node->name, | |
2403 | config_element_type)) { | |
2404 | xmlChar *content; | |
2405 | uint64_t type = 0; | |
2406 | ||
2407 | /* type */ | |
2408 | content = xmlNodeGetContent(perf_attr_node); | |
2409 | if (!content) { | |
2410 | ret = -LTTNG_ERR_NOMEM; | |
2411 | goto end; | |
2412 | } | |
2413 | ||
2414 | ret = parse_uint(content, &type); | |
2415 | free(content); | |
2416 | if (ret) { | |
2417 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2418 | goto end; | |
2419 | } | |
2420 | ||
2421 | if (type > UINT32_MAX) { | |
2422 | WARN("perf context type out of range."); | |
2423 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2424 | goto end; | |
2425 | } | |
2426 | ||
2427 | context.u.perf_counter.type = type; | |
2428 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2429 | config_element_config)) { | |
2430 | xmlChar *content; | |
2431 | uint64_t config = 0; | |
2432 | ||
2433 | /* config */ | |
2434 | content = xmlNodeGetContent(perf_attr_node); | |
2435 | if (!content) { | |
2436 | ret = -LTTNG_ERR_NOMEM; | |
2437 | goto end; | |
2438 | } | |
2439 | ||
2440 | ret = parse_uint(content, &config); | |
2441 | free(content); | |
2442 | if (ret) { | |
2443 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2444 | goto end; | |
2445 | } | |
2446 | ||
2447 | context.u.perf_counter.config = config; | |
2448 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2449 | config_element_name)) { | |
2450 | xmlChar *content; | |
dcf266c0 JG |
2451 | |
2452 | /* name */ | |
2453 | content = xmlNodeGetContent(perf_attr_node); | |
2454 | if (!content) { | |
2455 | ret = -LTTNG_ERR_NOMEM; | |
2456 | goto end; | |
2457 | } | |
2458 | ||
d2e67842 JG |
2459 | ret = lttng_strncpy(context.u.perf_counter.name, |
2460 | (const char *) content, | |
2461 | LTTNG_SYMBOL_NAME_LEN); | |
2462 | if (ret == -1) { | |
2463 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2464 | (const char *) content, | |
2465 | strlen((const char *) content), | |
2466 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2467 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2468 | free(content); | |
2469 | goto end; | |
2470 | } | |
dcf266c0 JG |
2471 | free(content); |
2472 | } | |
2473 | } | |
045fc617 JG |
2474 | } else if (!strcmp((const char *) context_child_node->name, |
2475 | config_element_context_app)) { | |
2476 | /* application context */ | |
2477 | xmlNodePtr app_ctx_node; | |
2478 | ||
2479 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2480 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2481 | app_ctx_node; app_ctx_node = | |
2482 | xmlNextElementSibling(app_ctx_node)) { | |
2483 | xmlChar *content; | |
2484 | char **target = strcmp( | |
2485 | (const char *) app_ctx_node->name, | |
2486 | config_element_context_app_provider_name) == 0 ? | |
2487 | &context.u.app_ctx.provider_name : | |
2488 | &context.u.app_ctx.ctx_name; | |
2489 | ||
2490 | content = xmlNodeGetContent(app_ctx_node); | |
2491 | if (!content) { | |
2492 | ret = -LTTNG_ERR_NOMEM; | |
2493 | goto end; | |
2494 | } | |
2495 | ||
2496 | *target = (char *) content; | |
2497 | } | |
2498 | } else { | |
2499 | /* Unrecognized context type */ | |
2500 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2501 | goto end; | |
dcf266c0 JG |
2502 | } |
2503 | ||
2504 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2505 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2506 | free(context.u.app_ctx.provider_name); | |
2507 | free(context.u.app_ctx.ctx_name); | |
2508 | } | |
dcf266c0 JG |
2509 | end: |
2510 | return ret; | |
2511 | } | |
2512 | ||
2513 | static | |
2514 | int process_contexts_node(xmlNodePtr contexts_node, | |
2515 | struct lttng_handle *handle, const char *channel_name) | |
2516 | { | |
2517 | int ret = 0; | |
2518 | xmlNodePtr context_node; | |
2519 | ||
2520 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2521 | context_node = xmlNextElementSibling(context_node)) { | |
2522 | ret = process_context_node(context_node, handle, channel_name); | |
2523 | if (ret) { | |
2524 | goto end; | |
2525 | } | |
2526 | } | |
2527 | end: | |
2528 | return ret; | |
2529 | } | |
2530 | ||
159b042f | 2531 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2532 | const char **element_id_tracker, |
159b042f JG |
2533 | const char **element_value_type, |
2534 | const char **element_value, | |
2535 | const char **element_value_alias, | |
55c9e7ca JR |
2536 | const char **element_name) |
2537 | { | |
2538 | int ret = 0; | |
2539 | ||
159b042f JG |
2540 | switch (process_attr) { |
2541 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2542 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2543 | *element_value_type = config_element_process_attr_pid_value; | |
2544 | *element_value = config_element_process_attr_id; | |
2545 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2546 | *element_name = NULL; |
2547 | break; | |
159b042f JG |
2548 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2549 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2550 | *element_value_type = config_element_process_attr_vpid_value; | |
2551 | *element_value = config_element_process_attr_id; | |
2552 | *element_value_alias = NULL; | |
55c9e7ca JR |
2553 | *element_name = NULL; |
2554 | break; | |
159b042f JG |
2555 | case LTTNG_PROCESS_ATTR_USER_ID: |
2556 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2557 | *element_value_type = config_element_process_attr_uid_value; | |
2558 | *element_value = config_element_process_attr_id; | |
2559 | *element_value_alias = NULL; | |
55c9e7ca JR |
2560 | *element_name = config_element_name; |
2561 | break; | |
159b042f JG |
2562 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2563 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2564 | *element_value_type = config_element_process_attr_vuid_value; | |
2565 | *element_value = config_element_process_attr_id; | |
2566 | *element_value_alias = NULL; | |
55c9e7ca JR |
2567 | *element_name = config_element_name; |
2568 | break; | |
159b042f JG |
2569 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2570 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2571 | *element_value_type = config_element_process_attr_gid_value; | |
2572 | *element_value = config_element_process_attr_id; | |
2573 | *element_value_alias = NULL; | |
55c9e7ca JR |
2574 | *element_name = config_element_name; |
2575 | break; | |
159b042f JG |
2576 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2577 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2578 | *element_value_type = config_element_process_attr_vgid_value; | |
2579 | *element_value = config_element_process_attr_id; | |
2580 | *element_value_alias = NULL; | |
55c9e7ca JR |
2581 | *element_name = config_element_name; |
2582 | break; | |
2583 | default: | |
2584 | ret = LTTNG_ERR_INVALID; | |
2585 | } | |
2586 | return ret; | |
2587 | } | |
2588 | ||
f7af9a72 JG |
2589 | static int process_legacy_pid_tracker_node( |
2590 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2591 | { | |
2592 | int ret = 0, child_count; | |
2593 | xmlNodePtr targets_node = NULL; | |
2594 | xmlNodePtr node; | |
2595 | const char *element_id_tracker; | |
2596 | const char *element_target_id; | |
2597 | const char *element_id; | |
2598 | const char *element_id_alias; | |
2599 | const char *element_name; | |
2600 | enum lttng_error_code tracker_handle_ret_code; | |
2601 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2602 | enum lttng_process_attr_tracker_handle_status status; | |
2603 | const enum lttng_process_attr process_attr = | |
2604 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2605 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2606 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2607 | ||
a0377dfe | 2608 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2609 | |
2610 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2611 | handle->session_name, handle->domain.type, | |
2612 | process_attr, | |
2613 | &tracker_handle); | |
2614 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2615 | ret = LTTNG_ERR_INVALID; | |
2616 | goto end; | |
2617 | } | |
2618 | ||
2619 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2620 | &element_target_id, &element_id, &element_id_alias, | |
2621 | &element_name); | |
2622 | if (ret) { | |
2623 | goto end; | |
2624 | } | |
2625 | ||
2626 | /* Get the targets node */ | |
2627 | for (node = xmlFirstElementChild(trackers_node); node; | |
2628 | node = xmlNextElementSibling(node)) { | |
2629 | if (!strcmp((const char *) node->name, | |
2630 | config_element_tracker_targets_legacy)) { | |
2631 | targets_node = node; | |
2632 | break; | |
2633 | } | |
3afa94ae | 2634 | } |
f7af9a72 JG |
2635 | |
2636 | if (!targets_node) { | |
2637 | ret = LTTNG_ERR_INVALID; | |
2638 | goto end; | |
2639 | } | |
2640 | ||
2641 | /* Go through all id target node */ | |
2642 | child_count = xmlChildElementCount(targets_node); | |
2643 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2644 | tracker_handle, | |
2645 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2646 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2647 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2648 | ret = LTTNG_ERR_UNK; | |
2649 | goto end; | |
2650 | } | |
2651 | ||
2652 | /* Add all tracked values. */ | |
2653 | for (node = xmlFirstElementChild(targets_node); node; | |
2654 | node = xmlNextElementSibling(node)) { | |
2655 | xmlNodePtr pid_target_node = node; | |
2656 | ||
2657 | /* get pid_target node and track it */ | |
2658 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2659 | node = xmlNextElementSibling(node)) { | |
2660 | if (!strcmp((const char *) node->name, | |
2661 | config_element_tracker_pid_legacy)) { | |
2662 | int64_t id; | |
2663 | xmlChar *content = xmlNodeGetContent(node); | |
2664 | ||
2665 | if (!content) { | |
2666 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2667 | goto end; | |
2668 | } | |
2669 | ||
2670 | ret = parse_int(content, &id); | |
2671 | free(content); | |
2672 | if (ret) { | |
2673 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2674 | goto end; | |
2675 | } | |
2676 | ||
2677 | switch (process_attr) { | |
2678 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2679 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2680 | tracker_handle, | |
2681 | (pid_t) id); | |
2682 | break; | |
2683 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2684 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2685 | tracker_handle, | |
2686 | (pid_t) id); | |
2687 | break; | |
2688 | default: | |
2689 | ret = LTTNG_ERR_INVALID; | |
2690 | goto end; | |
2691 | } | |
2692 | } | |
2693 | switch (status) { | |
2694 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2695 | continue; | |
2696 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2697 | ret = LTTNG_ERR_INVALID; | |
2698 | break; | |
2699 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2700 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2701 | break; | |
2702 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2703 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2704 | break; | |
2705 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2706 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2707 | default: | |
2708 | ret = LTTNG_ERR_UNK; | |
2709 | goto end; | |
2710 | } | |
2711 | } | |
2712 | node = pid_target_node; | |
2713 | } | |
2714 | ||
2715 | end: | |
2716 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2717 | return ret; | |
2718 | } | |
2719 | ||
55c9e7ca JR |
2720 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2721 | struct lttng_handle *handle, | |
159b042f | 2722 | enum lttng_process_attr process_attr) |
847a5916 | 2723 | { |
159b042f | 2724 | int ret = 0, child_count; |
f7af9a72 | 2725 | xmlNodePtr values_node = NULL; |
847a5916 | 2726 | xmlNodePtr node; |
55c9e7ca JR |
2727 | const char *element_id_tracker; |
2728 | const char *element_target_id; | |
2729 | const char *element_id; | |
2730 | const char *element_id_alias; | |
2731 | const char *element_name; | |
159b042f JG |
2732 | enum lttng_error_code tracker_handle_ret_code; |
2733 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2734 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2735 | |
a0377dfe FD |
2736 | LTTNG_ASSERT(handle); |
2737 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2738 | |
159b042f JG |
2739 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2740 | handle->session_name, handle->domain.type, process_attr, | |
2741 | &tracker_handle); | |
2742 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2743 | ret = LTTNG_ERR_INVALID; | |
2744 | goto end; | |
2745 | } | |
2746 | ||
2747 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2748 | &element_target_id, &element_id, &element_id_alias, |
2749 | &element_name); | |
2750 | if (ret) { | |
159b042f | 2751 | goto end; |
55c9e7ca JR |
2752 | } |
2753 | ||
f7af9a72 | 2754 | /* get the values node */ |
55c9e7ca JR |
2755 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2756 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2757 | if (!strcmp((const char *) node->name, |
159b042f | 2758 | config_element_process_attr_values)) { |
f7af9a72 | 2759 | values_node = node; |
847a5916 JR |
2760 | break; |
2761 | } | |
2762 | } | |
2763 | ||
f7af9a72 | 2764 | if (!values_node) { |
847a5916 JR |
2765 | ret = LTTNG_ERR_INVALID; |
2766 | goto end; | |
2767 | } | |
2768 | ||
55c9e7ca | 2769 | /* Go through all id target node */ |
f7af9a72 | 2770 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2771 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2772 | tracker_handle, | |
2773 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2774 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2775 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2776 | ret = LTTNG_ERR_UNK; | |
2777 | goto end; | |
847a5916 | 2778 | } |
159b042f JG |
2779 | |
2780 | /* Add all tracked values. */ | |
f7af9a72 | 2781 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2782 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2783 | xmlNodePtr id_target_node = node; |
847a5916 | 2784 | |
55c9e7ca JR |
2785 | /* get id node and track it */ |
2786 | for (node = xmlFirstElementChild(id_target_node); node; | |
2787 | node = xmlNextElementSibling(node)) { | |
2788 | if (!strcmp((const char *) node->name, element_id) || | |
2789 | (element_id_alias && | |
2790 | !strcmp((const char *) node->name, | |
2791 | element_id_alias))) { | |
2792 | int64_t id; | |
159b042f | 2793 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2794 | |
847a5916 JR |
2795 | if (!content) { |
2796 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2797 | goto end; | |
2798 | } | |
2799 | ||
55c9e7ca | 2800 | ret = parse_int(content, &id); |
847a5916 JR |
2801 | free(content); |
2802 | if (ret) { | |
2803 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2804 | goto end; | |
2805 | } | |
2806 | ||
159b042f JG |
2807 | switch (process_attr) { |
2808 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2809 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2810 | tracker_handle, | |
2811 | (pid_t) id); | |
2812 | break; | |
2813 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2814 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2815 | tracker_handle, | |
2816 | (pid_t) id); | |
2817 | break; | |
2818 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2819 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2820 | tracker_handle, | |
2821 | (uid_t) id); | |
2822 | break; | |
2823 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2824 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2825 | tracker_handle, | |
2826 | (uid_t) id); | |
2827 | break; | |
2828 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2829 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2830 | tracker_handle, | |
2831 | (gid_t) id); | |
2832 | break; | |
2833 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2834 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2835 | tracker_handle, | |
2836 | (gid_t) id); | |
2837 | break; | |
2838 | default: | |
2839 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2840 | goto end; |
2841 | } | |
159b042f JG |
2842 | } else if (element_name && |
2843 | !strcmp((const char *) node->name, | |
2844 | element_name)) { | |
2845 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 2846 | |
55c9e7ca JR |
2847 | if (!content) { |
2848 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2849 | goto end; | |
2850 | } | |
2d97a006 | 2851 | |
159b042f JG |
2852 | switch (process_attr) { |
2853 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2854 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
2855 | tracker_handle, | |
2856 | (const char *) content); | |
2857 | break; | |
2858 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2859 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
2860 | tracker_handle, | |
2861 | (const char *) content); | |
2862 | break; | |
2863 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2864 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
2865 | tracker_handle, | |
2866 | (const char *) content); | |
2867 | break; | |
2868 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2869 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
2870 | tracker_handle, | |
2871 | (const char *) content); | |
2872 | break; | |
2873 | default: | |
2874 | free(content); | |
2875 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
2876 | goto end; |
2877 | } | |
55c9e7ca | 2878 | free(content); |
159b042f JG |
2879 | } |
2880 | switch (status) { | |
2881 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2882 | continue; | |
2883 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2884 | ret = LTTNG_ERR_INVALID; | |
2885 | break; | |
2886 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2887 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2888 | break; | |
2889 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2890 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2891 | break; | |
2892 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2893 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2894 | default: | |
2895 | ret = LTTNG_ERR_UNK; | |
2896 | goto end; | |
847a5916 JR |
2897 | } |
2898 | } | |
55c9e7ca | 2899 | node = id_target_node; |
847a5916 JR |
2900 | } |
2901 | ||
2902 | end: | |
159b042f | 2903 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
2904 | return ret; |
2905 | } | |
2906 | ||
dcf266c0 JG |
2907 | static |
2908 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2909 | { | |
2910 | int ret; | |
3afa94ae | 2911 | struct lttng_domain domain {}; |
dcf266c0 | 2912 | struct lttng_handle *handle = NULL; |
4fc2b126 | 2913 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2914 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2915 | xmlNodePtr trackers_node = NULL; |
2916 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2917 | xmlNodePtr vpid_tracker_node = NULL; |
2918 | xmlNodePtr uid_tracker_node = NULL; | |
2919 | xmlNodePtr vuid_tracker_node = NULL; | |
2920 | xmlNodePtr gid_tracker_node = NULL; | |
2921 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2922 | xmlNodePtr node; |
2923 | ||
a0377dfe | 2924 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
2925 | |
2926 | ret = init_domain(domain_node, &domain); | |
2927 | if (ret) { | |
2928 | goto end; | |
2929 | } | |
2930 | ||
2931 | handle = lttng_create_handle(session_name, &domain); | |
2932 | if (!handle) { | |
2933 | ret = -LTTNG_ERR_NOMEM; | |
2934 | goto end; | |
2935 | } | |
2936 | ||
2937 | /* get the channels node */ | |
2938 | for (node = xmlFirstElementChild(domain_node); node; | |
2939 | node = xmlNextElementSibling(node)) { | |
2940 | if (!strcmp((const char *) node->name, | |
2941 | config_element_channels)) { | |
2942 | channels_node = node; | |
2943 | break; | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | if (!channels_node) { | |
2948 | goto end; | |
2949 | } | |
2950 | ||
2951 | /* create all channels */ | |
2952 | for (node = xmlFirstElementChild(channels_node); node; | |
2953 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2954 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2955 | xmlNodePtr contexts_node = NULL; |
2956 | xmlNodePtr events_node = NULL; | |
2957 | xmlNodePtr channel_attr_node; | |
2958 | ||
36d1687c JG |
2959 | /* |
2960 | * Channels of the "agent" types cannot be created directly. | |
2961 | * They are meant to be created implicitly through the | |
2962 | * activation of events in their domain. However, a user | |
2963 | * can override the default channel configuration attributes | |
2964 | * by creating the underlying UST channel _before_ enabling | |
2965 | * an agent domain event. | |
2966 | * | |
2967 | * Hence, the channel's type is substituted before the creation | |
2968 | * and restored by the time the events are created. | |
2969 | */ | |
2970 | switch (domain.type) { | |
2971 | case LTTNG_DOMAIN_JUL: | |
2972 | case LTTNG_DOMAIN_LOG4J: | |
2973 | case LTTNG_DOMAIN_PYTHON: | |
2974 | domain.type = LTTNG_DOMAIN_UST; | |
2975 | default: | |
2976 | break; | |
2977 | } | |
2978 | ||
4fc2b126 JR |
2979 | channel = lttng_channel_create(&domain); |
2980 | if (!channel) { | |
2981 | ret = -1; | |
2982 | goto end; | |
2983 | } | |
dcf266c0 JG |
2984 | |
2985 | for (channel_attr_node = xmlFirstElementChild(node); | |
2986 | channel_attr_node; channel_attr_node = | |
2987 | xmlNextElementSibling(channel_attr_node)) { | |
2988 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2989 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2990 | if (ret) { |
2991 | goto end; | |
2992 | } | |
2993 | } | |
2994 | ||
4fc2b126 | 2995 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2996 | if (ret < 0) { |
2997 | goto end; | |
2998 | } | |
2999 | ||
36d1687c JG |
3000 | /* Restore the original channel domain. */ |
3001 | domain.type = original_domain; | |
3002 | ||
4fc2b126 | 3003 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3004 | if (ret) { |
3005 | goto end; | |
3006 | } | |
3007 | ||
3008 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3009 | channel->name); |
dcf266c0 JG |
3010 | if (ret) { |
3011 | goto end; | |
3012 | } | |
4fc2b126 JR |
3013 | |
3014 | lttng_channel_destroy(channel); | |
dcf266c0 | 3015 | } |
4fc2b126 | 3016 | channel = NULL; |
847a5916 JR |
3017 | |
3018 | /* get the trackers node */ | |
3019 | for (node = xmlFirstElementChild(domain_node); node; | |
3020 | node = xmlNextElementSibling(node)) { | |
3021 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3022 | config_element_process_attr_trackers) || |
3023 | !strcmp((const char *) node->name, | |
3024 | config_element_trackers_legacy)) { | |
3025 | if (trackers_node) { | |
3026 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3027 | config_element_process_attr_trackers, | |
3028 | config_element_trackers_legacy); | |
3029 | ret = -1; | |
3030 | goto end; | |
3031 | } | |
847a5916 JR |
3032 | trackers_node = node; |
3033 | break; | |
3034 | } | |
3035 | } | |
3036 | ||
3037 | if (!trackers_node) { | |
3038 | goto end; | |
3039 | } | |
3040 | ||
3041 | for (node = xmlFirstElementChild(trackers_node); node; | |
3042 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3043 | if (!strcmp((const char *) node->name, |
159b042f | 3044 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3045 | pid_tracker_node = node; |
55c9e7ca | 3046 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3047 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3048 | if (ret) { |
3049 | goto end; | |
3050 | } | |
3051 | } | |
3052 | if (!strcmp((const char *) node->name, | |
159b042f | 3053 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3054 | vpid_tracker_node = node; |
3055 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3056 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3057 | if (ret) { |
3058 | goto end; | |
3059 | } | |
3060 | } | |
3061 | if (!strcmp((const char *) node->name, | |
159b042f | 3062 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3063 | uid_tracker_node = node; |
3064 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3065 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3066 | if (ret) { |
3067 | goto end; | |
3068 | } | |
3069 | } | |
3070 | if (!strcmp((const char *) node->name, | |
159b042f | 3071 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3072 | vuid_tracker_node = node; |
3073 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3074 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3075 | if (ret) { |
3076 | goto end; | |
3077 | } | |
3078 | } | |
3079 | if (!strcmp((const char *) node->name, | |
159b042f | 3080 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3081 | gid_tracker_node = node; |
3082 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3083 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3084 | if (ret) { |
3085 | goto end; | |
3086 | } | |
3087 | } | |
3088 | if (!strcmp((const char *) node->name, | |
159b042f | 3089 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3090 | vgid_tracker_node = node; |
3091 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3092 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3093 | if (ret) { |
3094 | goto end; | |
3095 | } | |
3096 | } | |
f7af9a72 JG |
3097 | if (!strcmp((const char *) node->name, |
3098 | config_element_pid_tracker_legacy)) { | |
3099 | ret = process_legacy_pid_tracker_node(node, handle); | |
3100 | if (ret) { | |
3101 | goto end; | |
3102 | } | |
3103 | } | |
847a5916 JR |
3104 | } |
3105 | ||
dcf266c0 | 3106 | end: |
4fc2b126 | 3107 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3108 | lttng_destroy_handle(handle); |
3109 | return ret; | |
3110 | } | |
3111 | ||
66ea93b1 JG |
3112 | static |
3113 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3114 | { | |
3115 | int ret; | |
3116 | enum lttng_rotation_status status; | |
3117 | struct lttng_rotation_schedule *periodic = | |
3118 | lttng_rotation_schedule_periodic_create(); | |
3119 | ||
3120 | if (!periodic) { | |
3121 | ret = -LTTNG_ERR_NOMEM; | |
3122 | goto error; | |
3123 | } | |
3124 | ||
3125 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3126 | time_us); | |
3127 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3128 | ret = -LTTNG_ERR_INVALID; | |
3129 | goto error; | |
3130 | } | |
3131 | ||
3132 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3133 | switch (status) { | |
3134 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3135 | ret = 0; |
66ea93b1 JG |
3136 | break; |
3137 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3138 | case LTTNG_ROTATION_STATUS_INVALID: | |
3139 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3140 | break; | |
3141 | default: | |
3142 | ret = -LTTNG_ERR_UNK; | |
3143 | break; | |
3144 | } | |
3145 | error: | |
3146 | lttng_rotation_schedule_destroy(periodic); | |
3147 | return ret; | |
3148 | } | |
3149 | ||
3150 | static | |
3151 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3152 | { | |
3153 | int ret; | |
3154 | enum lttng_rotation_status status; | |
3155 | struct lttng_rotation_schedule *size = | |
3156 | lttng_rotation_schedule_size_threshold_create(); | |
3157 | ||
3158 | if (!size) { | |
3159 | ret = -LTTNG_ERR_NOMEM; | |
3160 | goto error; | |
3161 | } | |
3162 | ||
3163 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3164 | size_bytes); | |
3165 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3166 | ret = -LTTNG_ERR_INVALID; | |
3167 | goto error; | |
3168 | } | |
3169 | ||
3170 | status = lttng_session_add_rotation_schedule(name, size); | |
3171 | switch (status) { | |
3172 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3173 | ret = 0; |
66ea93b1 JG |
3174 | break; |
3175 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3176 | case LTTNG_ROTATION_STATUS_INVALID: | |
3177 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3178 | break; | |
3179 | default: | |
3180 | ret = -LTTNG_ERR_UNK; | |
3181 | break; | |
3182 | } | |
3183 | error: | |
3184 | lttng_rotation_schedule_destroy(size); | |
3185 | return ret; | |
3186 | } | |
3187 | ||
ce6176f2 JG |
3188 | static |
3189 | int process_session_rotation_schedules_node( | |
3190 | xmlNodePtr schedules_node, | |
3191 | uint64_t *rotation_timer_interval, | |
3192 | uint64_t *rotation_size) | |
3193 | { | |
3194 | int ret = 0; | |
3195 | xmlNodePtr child; | |
3196 | ||
3197 | for (child = xmlFirstElementChild(schedules_node); | |
3198 | child; | |
3199 | child = xmlNextElementSibling(child)) { | |
3200 | if (!strcmp((const char *) child->name, | |
3201 | config_element_rotation_schedule_periodic)) { | |
3202 | xmlChar *content; | |
3203 | xmlNodePtr time_us_node; | |
3204 | ||
3205 | /* periodic rotation schedule */ | |
3206 | time_us_node = xmlFirstElementChild(child); | |
3207 | if (!time_us_node || | |
3208 | strcmp((const char *) time_us_node->name, | |
3209 | config_element_rotation_schedule_periodic_time_us)) { | |
3210 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3211 | goto end; | |
3212 | } | |
3213 | ||
3214 | /* time_us child */ | |
3215 | content = xmlNodeGetContent(time_us_node); | |
3216 | if (!content) { | |
3217 | ret = -LTTNG_ERR_NOMEM; | |
3218 | goto end; | |
3219 | } | |
3220 | ret = parse_uint(content, rotation_timer_interval); | |
3221 | free(content); | |
3222 | if (ret) { | |
3223 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3224 | goto end; | |
3225 | } | |
3226 | } else if (!strcmp((const char *) child->name, | |
3227 | config_element_rotation_schedule_size_threshold)) { | |
3228 | xmlChar *content; | |
3229 | xmlNodePtr bytes_node; | |
3230 | ||
3231 | /* size_threshold rotation schedule */ | |
3232 | bytes_node = xmlFirstElementChild(child); | |
3233 | if (!bytes_node || | |
3234 | strcmp((const char *) bytes_node->name, | |
3235 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3236 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3237 | goto end; | |
3238 | } | |
3239 | ||
3240 | /* bytes child */ | |
3241 | content = xmlNodeGetContent(bytes_node); | |
3242 | if (!content) { | |
3243 | ret = -LTTNG_ERR_NOMEM; | |
3244 | goto end; | |
3245 | } | |
3246 | ret = parse_uint(content, rotation_size); | |
3247 | free(content); | |
3248 | if (ret) { | |
3249 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3250 | goto end; | |
3251 | } | |
3252 | } | |
3253 | } | |
3254 | ||
3255 | end: | |
3256 | return ret; | |
3257 | } | |
3258 | ||
dcf266c0 JG |
3259 | static |
3260 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3261 | int overwrite, |
3262 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3263 | { |
3264 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3265 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3266 | rotation_timer_interval = 0, |
3267 | rotation_size = 0; | |
d324faf7 | 3268 | xmlChar *name = NULL; |
9e7c9f56 | 3269 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3270 | xmlNodePtr domains_node = NULL; |
3271 | xmlNodePtr output_node = NULL; | |
3272 | xmlNodePtr node; | |
90936dcf | 3273 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3274 | struct lttng_domain *kernel_domain = NULL; |
3275 | struct lttng_domain *ust_domain = NULL; | |
3276 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3277 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3278 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3279 | |
3280 | for (node = xmlFirstElementChild(session_node); node; | |
3281 | node = xmlNextElementSibling(node)) { | |
3282 | if (!name && !strcmp((const char *) node->name, | |
3283 | config_element_name)) { | |
3284 | /* name */ | |
3285 | xmlChar *node_content = xmlNodeGetContent(node); | |
3286 | if (!node_content) { | |
3287 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3288 | goto error; |
dcf266c0 JG |
3289 | } |
3290 | ||
d324faf7 | 3291 | name = node_content; |
dcf266c0 JG |
3292 | } else if (!domains_node && !strcmp((const char *) node->name, |
3293 | config_element_domains)) { | |
3294 | /* domains */ | |
3295 | domains_node = node; | |
3296 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3297 | config_element_started)) { | |
3298 | /* started */ | |
3299 | xmlChar *node_content = xmlNodeGetContent(node); | |
3300 | if (!node_content) { | |
3301 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3302 | goto error; |
dcf266c0 JG |
3303 | } |
3304 | ||
3305 | ret = parse_bool(node_content, &started); | |
3306 | free(node_content); | |
3307 | if (ret) { | |
3308 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3309 | goto error; |
dcf266c0 JG |
3310 | } |
3311 | } else if (!output_node && !strcmp((const char *) node->name, | |
3312 | config_element_output)) { | |
3313 | /* output */ | |
3314 | output_node = node; | |
9e7c9f56 JR |
3315 | } else if (!shm_path && !strcmp((const char *) node->name, |
3316 | config_element_shared_memory_path)) { | |
3317 | /* shared memory path */ | |
3318 | xmlChar *node_content = xmlNodeGetContent(node); | |
3319 | if (!node_content) { | |
3320 | ret = -LTTNG_ERR_NOMEM; | |
3321 | goto error; | |
3322 | } | |
3323 | ||
3324 | shm_path = node_content; | |
dcf266c0 | 3325 | } else { |
259c2674 JD |
3326 | /* |
3327 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3328 | * rotation_timer_interval. |
3329 | */ | |
3330 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3331 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3332 | if (!strcmp((const char *) attributes_child->name, | |
3333 | config_element_snapshot_mode)) { | |
3334 | /* snapshot_mode */ | |
3335 | xmlChar *snapshot_mode_content = | |
3336 | xmlNodeGetContent(attributes_child); | |
3337 | if (!snapshot_mode_content) { | |
3338 | ret = -LTTNG_ERR_NOMEM; | |
3339 | goto error; | |
3340 | } | |
dcf266c0 | 3341 | |
90936dcf JD |
3342 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3343 | free(snapshot_mode_content); | |
3344 | if (ret) { | |
3345 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3346 | goto error; | |
3347 | } | |
3348 | } else if (!strcmp((const char *) attributes_child->name, | |
3349 | config_element_live_timer_interval)) { | |
3350 | /* live_timer_interval */ | |
3351 | xmlChar *timer_interval_content = | |
3352 | xmlNodeGetContent(attributes_child); | |
3353 | if (!timer_interval_content) { | |
3354 | ret = -LTTNG_ERR_NOMEM; | |
3355 | goto error; | |
3356 | } | |
dcf266c0 | 3357 | |
90936dcf JD |
3358 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3359 | free(timer_interval_content); | |
3360 | if (ret) { | |
3361 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3362 | goto error; | |
3363 | } | |
ce6176f2 JG |
3364 | } else if (!strcmp((const char *) attributes_child->name, |
3365 | config_element_rotation_schedules)) { | |
3366 | ret = process_session_rotation_schedules_node( | |
3367 | attributes_child, | |
3368 | &rotation_timer_interval, | |
3369 | &rotation_size); | |
90936dcf JD |
3370 | if (ret) { |
3371 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3372 | goto error; | |
3373 | } | |
259c2674 | 3374 | |
259c2674 JD |
3375 | } |
3376 | } | |
dcf266c0 JG |
3377 | } |
3378 | } | |
3379 | ||
3380 | if (!name) { | |
3381 | /* Mandatory attribute, as defined in the session XSD */ | |
3382 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3383 | goto error; |
dcf266c0 JG |
3384 | } |
3385 | ||
d324faf7 | 3386 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3387 | /* This is not the session we are looking for */ |
c2da8cde DG |
3388 | ret = -LTTNG_ERR_NO_SESSION; |
3389 | goto error; | |
dcf266c0 JG |
3390 | } |
3391 | ||
3392 | /* Init domains to create the session handles */ | |
3393 | for (node = xmlFirstElementChild(domains_node); node; | |
3394 | node = xmlNextElementSibling(node)) { | |
64803277 | 3395 | lttng_domain *domain = zmalloc<lttng_domain>(); |
dcf266c0 | 3396 | |
dcf266c0 JG |
3397 | if (!domain) { |
3398 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3399 | goto error; |
dcf266c0 JG |
3400 | } |
3401 | ||
3402 | ret = init_domain(node, domain); | |
3403 | if (ret) { | |
3404 | goto domain_init_error; | |
3405 | } | |
3406 | ||
3407 | switch (domain->type) { | |
3408 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3409 | if (kernel_domain) { |
3410 | /* Same domain seen twice, invalid! */ | |
3411 | goto domain_init_error; | |
3412 | } | |
dcf266c0 JG |
3413 | kernel_domain = domain; |
3414 | break; | |
3415 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3416 | if (ust_domain) { |
3417 | /* Same domain seen twice, invalid! */ | |
3418 | goto domain_init_error; | |
3419 | } | |
dcf266c0 JG |
3420 | ust_domain = domain; |
3421 | break; | |
3422 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3423 | if (jul_domain) { |
3424 | /* Same domain seen twice, invalid! */ | |
3425 | goto domain_init_error; | |
3426 | } | |
dcf266c0 JG |
3427 | jul_domain = domain; |
3428 | break; | |
5cdb6027 DG |
3429 | case LTTNG_DOMAIN_LOG4J: |
3430 | if (log4j_domain) { | |
3431 | /* Same domain seen twice, invalid! */ | |
3432 | goto domain_init_error; | |
3433 | } | |
3434 | log4j_domain = domain; | |
3435 | break; | |
0e115563 DG |
3436 | case LTTNG_DOMAIN_PYTHON: |
3437 | if (python_domain) { | |
3438 | /* Same domain seen twice, invalid! */ | |
3439 | goto domain_init_error; | |
3440 | } | |
3441 | python_domain = domain; | |
3442 | break; | |
dcf266c0 JG |
3443 | default: |
3444 | WARN("Invalid domain type"); | |
3445 | goto domain_init_error; | |
3446 | } | |
3447 | continue; | |
3448 | domain_init_error: | |
3449 | free(domain); | |
3450 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3451 | goto error; |
dcf266c0 JG |
3452 | } |
3453 | ||
2aaf5fc7 JR |
3454 | /* Apply overrides */ |
3455 | if (overrides) { | |
3456 | if (overrides->session_name) { | |
3457 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3458 | if (!name_override) { | |
3459 | ret = -LTTNG_ERR_NOMEM; | |
3460 | goto error; | |
3461 | } | |
3462 | ||
3463 | /* Overrides the session name to the provided name */ | |
3464 | xmlFree(name); | |
3465 | name = name_override; | |
3466 | } | |
3467 | } | |
3468 | ||
40b4155f | 3469 | if (overwrite) { |
dcf266c0 | 3470 | /* Destroy session if it exists */ |
d324faf7 | 3471 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3472 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3473 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3474 | goto error; |
dcf266c0 JG |
3475 | } |
3476 | } | |
3477 | ||
3478 | /* Create session type depending on output type */ | |
3479 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3480 | ret = create_snapshot_session((const char *) name, output_node, |
3481 | overrides); | |
dcf266c0 JG |
3482 | } else if (live_timer_interval && |
3483 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3484 | ret = create_session((const char *) name, |
1b08cbce | 3485 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3486 | } else { |
3487 | /* regular session */ | |
194dfca0 | 3488 | ret = create_session((const char *) name, |
1b08cbce | 3489 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3490 | } |
dcf266c0 | 3491 | if (ret) { |
c2da8cde | 3492 | goto error; |
dcf266c0 JG |
3493 | } |
3494 | ||
9e7c9f56 JR |
3495 | if (shm_path) { |
3496 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3497 | (const char *) shm_path); |
9e7c9f56 JR |
3498 | if (ret) { |
3499 | goto error; | |
3500 | } | |
3501 | } | |
3502 | ||
dcf266c0 JG |
3503 | for (node = xmlFirstElementChild(domains_node); node; |
3504 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3505 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3506 | if (ret) { |
3507 | goto end; | |
3508 | } | |
3509 | } | |
3510 | ||
66ea93b1 JG |
3511 | if (rotation_timer_interval) { |
3512 | ret = add_periodic_rotation((const char *) name, | |
3513 | rotation_timer_interval); | |
3514 | if (ret < 0) { | |
259c2674 JD |
3515 | goto error; |
3516 | } | |
66ea93b1 JG |
3517 | } |
3518 | if (rotation_size) { | |
3519 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3520 | rotation_size); |
66ea93b1 | 3521 | if (ret < 0) { |
259c2674 JD |
3522 | goto error; |
3523 | } | |
3524 | } | |
3525 | ||
dcf266c0 | 3526 | if (started) { |
d324faf7 | 3527 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3528 | if (ret) { |
3529 | goto end; | |
3530 | } | |
3531 | } | |
c2da8cde | 3532 | |
dcf266c0 | 3533 | end: |
b2579dc1 | 3534 | if (ret < 0) { |
d324faf7 JG |
3535 | ERR("Failed to load session %s: %s", (const char *) name, |
3536 | lttng_strerror(ret)); | |
3537 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3538 | } |
3539 | ||
c2da8cde | 3540 | error: |
dcf266c0 JG |
3541 | free(kernel_domain); |
3542 | free(ust_domain); | |
3543 | free(jul_domain); | |
5cdb6027 | 3544 | free(log4j_domain); |
135a3893 | 3545 | free(python_domain); |
d324faf7 | 3546 | xmlFree(name); |
9e7c9f56 | 3547 | xmlFree(shm_path); |
dcf266c0 JG |
3548 | return ret; |
3549 | } | |
3550 | ||
cf53c06d DG |
3551 | /* |
3552 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3553 | * Return -1 if the path is EPERM. | |
3554 | */ | |
3555 | static int validate_file_read_creds(const char *path) | |
3556 | { | |
3557 | int ret; | |
3558 | ||
a0377dfe | 3559 | LTTNG_ASSERT(path); |
cf53c06d DG |
3560 | |
3561 | /* Can we read the file. */ | |
3562 | ret = access(path, R_OK); | |
3563 | if (!ret) { | |
3564 | goto valid; | |
3565 | } | |
3566 | if (errno == EACCES) { | |
3567 | return -1; | |
3568 | } else { | |
3569 | /* Invalid. */ | |
3570 | return 0; | |
3571 | } | |
3572 | valid: | |
3573 | return 1; | |
3574 | } | |
3575 | ||
dcf266c0 JG |
3576 | static |
3577 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3578 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3579 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3580 | { |
3581 | int ret, session_found = !session_name; | |
3582 | xmlDocPtr doc = NULL; | |
3583 | xmlNodePtr sessions_node; | |
3584 | xmlNodePtr session_node; | |
dcf266c0 | 3585 | |
a0377dfe FD |
3586 | LTTNG_ASSERT(path); |
3587 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3588 | |
cf53c06d DG |
3589 | ret = validate_file_read_creds(path); |
3590 | if (ret != 1) { | |
3591 | if (ret == -1) { | |
3592 | ret = -LTTNG_ERR_EPERM; | |
3593 | } else { | |
3594 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3595 | } | |
dcf266c0 JG |
3596 | goto end; |
3597 | } | |
3598 | ||
3599 | doc = xmlParseFile(path); | |
3600 | if (!doc) { | |
3601 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3602 | goto end; | |
3603 | } | |
3604 | ||
3605 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3606 | if (ret) { | |
3607 | ERR("Session configuration file validation failed"); | |
3608 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3609 | goto end; | |
3610 | } | |
3611 | ||
3612 | sessions_node = xmlDocGetRootElement(doc); | |
3613 | if (!sessions_node) { | |
55c9e7ca | 3614 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3615 | goto end; |
3616 | } | |
3617 | ||
3618 | for (session_node = xmlFirstElementChild(sessions_node); | |
3619 | session_node; session_node = | |
3620 | xmlNextElementSibling(session_node)) { | |
3621 | ret = process_session_node(session_node, | |
1b08cbce | 3622 | session_name, overwrite, overrides); |
317ea246 JG |
3623 | if (!session_name && ret) { |
3624 | /* Loading error occurred. */ | |
3625 | goto end; | |
3626 | } else if (session_name) { | |
3627 | if (ret == 0) { | |
3628 | /* Target session found and loaded */ | |
3629 | session_found = 1; | |
3630 | break; | |
3631 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3632 | /* | |
3633 | * Ignore this error, we are looking for a | |
3634 | * specific session. | |
3635 | */ | |
3636 | ret = 0; | |
3637 | } else { | |
3638 | /* Loading error occurred. */ | |
3639 | goto end; | |
3640 | } | |
dcf266c0 JG |
3641 | } |
3642 | } | |
3643 | end: | |
3644 | xmlFreeDoc(doc); | |
3645 | if (!ret) { | |
a96bc65d | 3646 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3647 | } |
3648 | return ret; | |
3649 | } | |
3650 | ||
3651 | static | |
3652 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3653 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3654 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3655 | { |
3656 | int ret, session_found = !session_name; | |
dcf266c0 | 3657 | DIR *directory = NULL; |
cce35f91 JG |
3658 | struct lttng_dynamic_buffer file_path; |
3659 | size_t path_len; | |
dcf266c0 | 3660 | |
a0377dfe FD |
3661 | LTTNG_ASSERT(path); |
3662 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3663 | path_len = strlen(path); |
3664 | lttng_dynamic_buffer_init(&file_path); | |
3665 | if (path_len >= LTTNG_PATH_MAX) { | |
3666 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3667 | path, path_len, LTTNG_PATH_MAX); | |
3668 | ret = -LTTNG_ERR_INVALID; | |
3669 | goto end; | |
3670 | } | |
dcf266c0 | 3671 | |
4af16958 DG |
3672 | directory = opendir(path); |
3673 | if (!directory) { | |
11143783 DG |
3674 | switch (errno) { |
3675 | case ENOTDIR: | |
0f0a81b5 DG |
3676 | /* Try the file loading. */ |
3677 | break; | |
11143783 DG |
3678 | case ENOENT: |
3679 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3680 | goto end; | |
3681 | default: | |
0f0a81b5 DG |
3682 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3683 | goto end; | |
4af16958 | 3684 | } |
dcf266c0 | 3685 | } |
4af16958 | 3686 | if (directory) { |
cce35f91 | 3687 | size_t file_path_root_len; |
dcf266c0 | 3688 | |
cce35f91 JG |
3689 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3690 | LTTNG_PATH_MAX); | |
3691 | if (ret) { | |
3692 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3693 | goto end; |
3694 | } | |
3695 | ||
cce35f91 JG |
3696 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3697 | if (ret) { | |
dcf266c0 | 3698 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3699 | goto end; |
3700 | } | |
3701 | ||
cce35f91 JG |
3702 | if (file_path.data[file_path.size - 1] != '/') { |
3703 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3704 | if (ret) { | |
3705 | ret = -LTTNG_ERR_NOMEM; | |
3706 | goto end; | |
3707 | } | |
dcf266c0 | 3708 | } |
cce35f91 | 3709 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3710 | |
3711 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3712 | for (;;) { |
3713 | size_t file_name_len; | |
3714 | struct dirent *result; | |
3715 | ||
3716 | /* | |
3717 | * When the end of the directory stream is reached, NULL | |
3718 | * is returned and errno is kept unchanged. When an | |
3719 | * error occurs, NULL is returned and errno is set | |
3720 | * accordingly. To distinguish between the two, set | |
3721 | * errno to zero before calling readdir(). | |
3722 | * | |
3723 | * On success, readdir() returns a pointer to a dirent | |
3724 | * structure. This structure may be statically | |
3725 | * allocated, do not attempt to free(3) it. | |
3726 | */ | |
3727 | errno = 0; | |
3728 | result = readdir(directory); | |
3729 | ||
ff86d8d0 | 3730 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3731 | if (!result) { |
3732 | if (errno) { | |
3733 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3734 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3735 | goto end; | |
3736 | } | |
3737 | break; | |
3738 | } | |
3739 | ||
3740 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3741 | |
3742 | if (file_name_len <= | |
3743 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3744 | continue; | |
3745 | } | |
3746 | ||
cce35f91 JG |
3747 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3748 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3749 | result->d_name, | |
3750 | /* +1 to account for NULL terminator. */ | |
3751 | file_path.size + file_name_len + 1, | |
3752 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3753 | continue; |
3754 | } | |
3755 | ||
cce35f91 | 3756 | /* Does the file end with .lttng? */ |
dcf266c0 | 3757 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3758 | result->d_name + file_name_len - sizeof( |
3759 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3760 | continue; |
3761 | } | |
3762 | ||
cce35f91 JG |
3763 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3764 | file_name_len + 1); | |
3765 | if (ret) { | |
3766 | ret = -LTTNG_ERR_NOMEM; | |
3767 | goto end; | |
3768 | } | |
dcf266c0 | 3769 | |
cce35f91 | 3770 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3771 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3772 | if (session_name && |
3773 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3774 | session_found = 1; |
3775 | break; | |
3776 | } | |
55c9e7ca JR |
3777 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3778 | goto end; | |
3779 | } | |
cce35f91 JG |
3780 | /* |
3781 | * Reset the buffer's size to the location of the | |
3782 | * path's trailing '/'. | |
3783 | */ | |
3784 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3785 | file_path_root_len); | |
3786 | if (ret) { | |
3787 | ret = -LTTNG_ERR_UNK; | |
3788 | goto end; | |
3789 | } | |
dcf266c0 | 3790 | } |
dcf266c0 JG |
3791 | } else { |
3792 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3793 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3794 | if (ret) { |
3795 | goto end; | |
dcf266c0 | 3796 | } |
55c9e7ca | 3797 | session_found = 1; |
dcf266c0 JG |
3798 | } |
3799 | ||
55c9e7ca | 3800 | ret = 0; |
dcf266c0 JG |
3801 | end: |
3802 | if (directory) { | |
3803 | if (closedir(directory)) { | |
3804 | PERROR("closedir"); | |
3805 | } | |
3806 | } | |
55c9e7ca JR |
3807 | if (!ret && !session_found) { |
3808 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3809 | } |
cce35f91 | 3810 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3811 | return ret; |
3812 | } | |
3813 | ||
ab38c13f DG |
3814 | /* |
3815 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3816 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3817 | */ |
3818 | static int validate_path_creds(const char *path) | |
3819 | { | |
3820 | int ret, uid = getuid(); | |
3821 | struct stat buf; | |
3822 | ||
a0377dfe | 3823 | LTTNG_ASSERT(path); |
ab38c13f | 3824 | |
cf53c06d | 3825 | if (uid == 0) { |
ab38c13f DG |
3826 | goto valid; |
3827 | } | |
3828 | ||
3829 | ret = stat(path, &buf); | |
3830 | if (ret < 0) { | |
3831 | if (errno != ENOENT) { | |
3832 | PERROR("stat"); | |
3833 | } | |
ab38c13f DG |
3834 | goto valid; |
3835 | } | |
3836 | ||
3837 | if (buf.st_uid != uid) { | |
3838 | goto invalid; | |
3839 | } | |
3840 | ||
3841 | valid: | |
ab38c13f | 3842 | return 1; |
cf53c06d DG |
3843 | invalid: |
3844 | return 0; | |
ab38c13f DG |
3845 | } |
3846 | ||
dcf266c0 | 3847 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
3848 | int overwrite, unsigned int autoload, |
3849 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3850 | { |
3851 | int ret; | |
6c66fa0f | 3852 | bool session_loaded = false; |
cf53c06d | 3853 | const char *path_ptr = NULL; |
1c9a0b0e | 3854 | struct session_config_validation_ctx validation_ctx = {}; |
dcf266c0 JG |
3855 | |
3856 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3857 | if (ret) { | |
3858 | goto end; | |
3859 | } | |
3860 | ||
3861 | if (!path) { | |
4f00620d | 3862 | const char *home_path; |
ab38c13f DG |
3863 | const char *sys_path; |
3864 | ||
dcf266c0 | 3865 | /* Try home path */ |
ab38c13f | 3866 | home_path = utils_get_home_dir(); |
dcf266c0 | 3867 | if (home_path) { |
db8196db | 3868 | char path_buf[PATH_MAX]; |
dcf266c0 | 3869 | |
d4fcf703 DG |
3870 | /* |
3871 | * Try user session configuration path. Ignore error here so we can | |
3872 | * continue loading the system wide sessions. | |
3873 | */ | |
ab38c13f | 3874 | if (autoload) { |
db8196db SM |
3875 | ret = snprintf(path_buf, sizeof(path_buf), |
3876 | DEFAULT_SESSION_HOME_CONFIGPATH | |
3877 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
3878 | home_path); | |
cf53c06d DG |
3879 | if (ret < 0) { |
3880 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3881 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3882 | goto end; |
3883 | } | |
3884 | ||
3885 | /* | |
3886 | * Credentials are only validated for the autoload in order to | |
3887 | * avoid any user session daemon to try to load kernel sessions | |
3888 | * automatically and failing all the times. | |
3889 | */ | |
db8196db | 3890 | ret = validate_path_creds(path_buf); |
cf53c06d | 3891 | if (ret) { |
db8196db | 3892 | path_ptr = path_buf; |
cf53c06d | 3893 | } |
ab38c13f | 3894 | } else { |
db8196db SM |
3895 | ret = snprintf(path_buf, sizeof(path_buf), |
3896 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
3897 | home_path); | |
cf53c06d DG |
3898 | if (ret < 0) { |
3899 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3900 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3901 | goto end; |
3902 | } | |
db8196db | 3903 | path_ptr = path_buf; |
ab38c13f | 3904 | } |
cf53c06d DG |
3905 | if (path_ptr) { |
3906 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3907 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3908 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3909 | goto end; | |
3910 | } | |
3911 | /* | |
3912 | * Continue even if the session was found since we have to try | |
3913 | * the system wide sessions. | |
3914 | */ | |
6c66fa0f | 3915 | session_loaded = true; |
ab38c13f | 3916 | } |
d4fcf703 | 3917 | } |
ab38c13f | 3918 | |
cf53c06d DG |
3919 | /* Reset path pointer for the system wide dir. */ |
3920 | path_ptr = NULL; | |
3921 | ||
d4fcf703 DG |
3922 | /* Try system wide configuration directory. */ |
3923 | if (autoload) { | |
3924 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3925 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3926 | ret = validate_path_creds(sys_path); |
3927 | if (ret) { | |
3928 | path_ptr = sys_path; | |
3929 | } | |
d4fcf703 | 3930 | } else { |
cf53c06d DG |
3931 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3932 | path_ptr = sys_path; | |
d4fcf703 DG |
3933 | } |
3934 | ||
cf53c06d DG |
3935 | if (path_ptr) { |
3936 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3937 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3938 | if (!ret) { |
3939 | session_loaded = true; | |
3940 | } | |
55c9e7ca JR |
3941 | } else { |
3942 | ret = 0; | |
dcf266c0 JG |
3943 | } |
3944 | } else { | |
3945 | ret = access(path, F_OK); | |
3946 | if (ret < 0) { | |
3947 | PERROR("access"); | |
3948 | switch (errno) { | |
3949 | case ENOENT: | |
3950 | ret = -LTTNG_ERR_INVALID; | |
3951 | WARN("Session configuration path does not exist."); | |
3952 | break; | |
3953 | case EACCES: | |
3954 | ret = -LTTNG_ERR_EPERM; | |
3955 | break; | |
3956 | default: | |
3957 | ret = -LTTNG_ERR_UNK; | |
3958 | break; | |
3959 | } | |
3960 | goto end; | |
3961 | } | |
3962 | ||
3963 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3964 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3965 | } |
3966 | end: | |
3967 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3968 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3969 | /* | |
3970 | * Don't report an error if no sessions are found when called | |
3971 | * without a session_name or a search path. | |
3972 | */ | |
3973 | ret = 0; | |
3974 | } | |
6c66fa0f JG |
3975 | |
3976 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3977 | /* A matching session was found in one of the search paths. */ | |
3978 | ret = 0; | |
3979 | } | |
dcf266c0 JG |
3980 | return ret; |
3981 | } | |
56766c75 JG |
3982 | |
3983 | static | |
3984 | void __attribute__((destructor)) session_config_exit(void) | |
3985 | { | |
3986 | xmlCleanupParser(); | |
3987 | } |