Commit | Line | Data |
---|---|---|
1501a7f3 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
1501a7f3 | 19 | #include <assert.h> |
1501a7f3 | 20 | #include <ctype.h> |
1501a7f3 JG |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
36f2332b | 24 | #include <inttypes.h> |
dcf266c0 JG |
25 | #include <dirent.h> |
26 | #include <unistd.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/stat.h> | |
6c66fa0f | 29 | #include <stdbool.h> |
1501a7f3 JG |
30 | |
31 | #include <common/defaults.h> | |
32 | #include <common/error.h> | |
33 | #include <common/macros.h> | |
34 | #include <common/utils.h> | |
cce35f91 | 35 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 36 | #include <common/compat/getenv.h> |
fb198a11 JG |
37 | #include <lttng/lttng-error.h> |
38 | #include <libxml/parser.h> | |
39 | #include <libxml/valid.h> | |
40 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
41 | #include <libxml/tree.h> |
42 | #include <lttng/lttng.h> | |
43 | #include <lttng/snapshot.h> | |
259c2674 | 44 | #include <lttng/rotation.h> |
c1e83fb4 | 45 | #include <lttng/userspace-probe.h> |
1501a7f3 | 46 | |
f40ef1d5 | 47 | #include "session-config.h" |
36f2332b | 48 | #include "config-internal.h" |
1501a7f3 | 49 | |
c1e83fb4 FD |
50 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
51 | ||
1501a7f3 JG |
52 | struct handler_filter_args { |
53 | const char* section; | |
54 | config_entry_handler_cb handler; | |
55 | void *user_data; | |
56 | }; | |
57 | ||
dcf266c0 JG |
58 | struct session_config_validation_ctx { |
59 | xmlSchemaParserCtxtPtr parser_ctx; | |
60 | xmlSchemaPtr schema; | |
61 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
62 | }; | |
63 | ||
55c9e7ca | 64 | const char * const config_element_all = "all"; |
1501a7f3 JG |
65 | const char * const config_str_yes = "yes"; |
66 | const char * const config_str_true = "true"; | |
67 | const char * const config_str_on = "on"; | |
68 | const char * const config_str_no = "no"; | |
69 | const char * const config_str_false = "false"; | |
70 | const char * const config_str_off = "off"; | |
36f2332b | 71 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 72 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
73 | const char * const config_xml_indent_string = "\t"; |
74 | const char * const config_xml_true = "true"; | |
75 | const char * const config_xml_false = "false"; | |
1501a7f3 | 76 | |
fb198a11 JG |
77 | const char * const config_element_channel = "channel"; |
78 | const char * const config_element_channels = "channels"; | |
79 | const char * const config_element_domain = "domain"; | |
80 | const char * const config_element_domains = "domains"; | |
81 | const char * const config_element_event = "event"; | |
82 | const char * const config_element_events = "events"; | |
83 | const char * const config_element_context = "context"; | |
84 | const char * const config_element_contexts = "contexts"; | |
85 | const char * const config_element_attributes = "attributes"; | |
86 | const char * const config_element_exclusion = "exclusion"; | |
87 | const char * const config_element_exclusions = "exclusions"; | |
88 | const char * const config_element_function_attributes = "function_attributes"; | |
89 | const char * const config_element_probe_attributes = "probe_attributes"; | |
90 | const char * const config_element_symbol_name = "symbol_name"; | |
91 | const char * const config_element_address = "address"; | |
92 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 93 | |
d0687332 JG |
94 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method"; |
95 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
96 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
97 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
98 | LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
99 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
100 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
101 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
102 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
103 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 104 | |
fb198a11 JG |
105 | const char * const config_element_name = "name"; |
106 | const char * const config_element_enabled = "enabled"; | |
107 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
108 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
109 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
110 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
111 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
112 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
113 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
114 | const char * const config_element_output = "output"; |
115 | const char * const config_element_output_type = "output_type"; | |
116 | const char * const config_element_tracefile_size = "tracefile_size"; | |
117 | const char * const config_element_tracefile_count = "tracefile_count"; | |
118 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
119 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
120 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
121 | const char * const config_element_type = "type"; |
122 | const char * const config_element_buffer_type = "buffer_type"; | |
123 | const char * const config_element_session = "session"; | |
124 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
125 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
126 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
127 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
128 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
129 | const char * const config_element_config = "config"; |
130 | const char * const config_element_started = "started"; | |
131 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
132 | const char * const config_element_loglevel = "loglevel"; | |
133 | const char * const config_element_loglevel_type = "loglevel_type"; | |
134 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 135 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
136 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
137 | const char * const config_element_consumer_output = "consumer_output"; | |
138 | const char * const config_element_destination = "destination"; | |
139 | const char * const config_element_path = "path"; | |
140 | const char * const config_element_net_output = "net_output"; | |
141 | const char * const config_element_control_uri = "control_uri"; | |
142 | const char * const config_element_data_uri = "data_uri"; | |
143 | const char * const config_element_max_size = "max_size"; | |
ccf10263 | 144 | const char * const config_element_pid = "pid"; |
55c9e7ca | 145 | const char * const config_element_id = "id"; |
ccf10263 | 146 | const char * const config_element_pids = "pids"; |
9e7c9f56 | 147 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 | 148 | const char * const config_element_pid_tracker = "pid_tracker"; |
55c9e7ca JR |
149 | const char * const config_element_vpid_tracker = "vpid_tracker"; |
150 | const char * const config_element_uid_tracker = "uid_tracker"; | |
151 | const char * const config_element_vuid_tracker = "vuid_tracker"; | |
152 | const char * const config_element_gid_tracker = "gid_tracker"; | |
153 | const char * const config_element_vgid_tracker = "vgid_tracker"; | |
ebbf5ab7 | 154 | const char * const config_element_trackers = "trackers"; |
847a5916 | 155 | const char * const config_element_targets = "targets"; |
55c9e7ca | 156 | const char * const config_element_target_type = "target_type"; |
847a5916 | 157 | const char * const config_element_target_pid = "pid_target"; |
55c9e7ca JR |
158 | const char * const config_element_target_vpid = "vpid_target"; |
159 | const char * const config_element_target_uid = "uid_target"; | |
160 | const char * const config_element_target_vuid = "vuid_target"; | |
161 | const char * const config_element_target_gid = "gid_target"; | |
162 | const char * const config_element_target_vgid = "vgid_target"; | |
163 | const char * const config_element_tracker_type = "tracker_type"; | |
fb198a11 | 164 | |
ce6176f2 JG |
165 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
166 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
167 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
168 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
169 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 170 | |
fb198a11 JG |
171 | const char * const config_domain_type_kernel = "KERNEL"; |
172 | const char * const config_domain_type_ust = "UST"; | |
173 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 174 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 175 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
176 | |
177 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
178 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
179 | const char * const config_buffer_type_global = "GLOBAL"; | |
180 | ||
181 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
182 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
183 | ||
184 | const char * const config_output_type_splice = "SPLICE"; | |
185 | const char * const config_output_type_mmap = "MMAP"; | |
186 | ||
187 | const char * const config_loglevel_type_all = "ALL"; | |
188 | const char * const config_loglevel_type_range = "RANGE"; | |
189 | const char * const config_loglevel_type_single = "SINGLE"; | |
190 | ||
191 | const char * const config_event_type_all = "ALL"; | |
192 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
193 | const char * const config_event_type_probe = "PROBE"; | |
a416382b | 194 | LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
195 | const char * const config_event_type_function = "FUNCTION"; |
196 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
197 | const char * const config_event_type_noop = "NOOP"; | |
198 | const char * const config_event_type_syscall = "SYSCALL"; | |
199 | const char * const config_event_type_kprobe = "KPROBE"; | |
200 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
201 | ||
202 | const char * const config_event_context_pid = "PID"; | |
203 | const char * const config_event_context_procname = "PROCNAME"; | |
204 | const char * const config_event_context_prio = "PRIO"; | |
205 | const char * const config_event_context_nice = "NICE"; | |
206 | const char * const config_event_context_vpid = "VPID"; | |
207 | const char * const config_event_context_tid = "TID"; | |
208 | const char * const config_event_context_vtid = "VTID"; | |
209 | const char * const config_event_context_ppid = "PPID"; | |
210 | const char * const config_event_context_vppid = "VPPID"; | |
211 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
212 | const char * const config_event_context_hostname = "HOSTNAME"; | |
213 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 214 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
215 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
216 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
217 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
218 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
219 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
220 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
221 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
40e14884 MJ |
222 | LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS"; |
223 | LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS"; | |
224 | LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS"; | |
225 | LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS"; | |
226 | LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS"; | |
227 | LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS"; | |
228 | LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS"; | |
499cbfa1 MJ |
229 | LTTNG_HIDDEN const char * const config_event_context_uid = "UID"; |
230 | LTTNG_HIDDEN const char * const config_event_context_euid = "EUID"; | |
231 | LTTNG_HIDDEN const char * const config_event_context_suid = "SUID"; | |
232 | LTTNG_HIDDEN const char * const config_event_context_gid = "GID"; | |
233 | LTTNG_HIDDEN const char * const config_event_context_egid = "EGID"; | |
234 | LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID"; | |
235 | LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID"; | |
236 | LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID"; | |
237 | LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID"; | |
238 | LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID"; | |
239 | LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID"; | |
240 | LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 241 | |
fbd987c9 JG |
242 | /* Deprecated symbols */ |
243 | const char * const config_element_perf; | |
244 | ||
d7b645e2 JR |
245 | enum process_event_node_phase { |
246 | CREATION = 0, | |
247 | ENABLE = 1, | |
248 | }; | |
249 | ||
dcf266c0 JG |
250 | struct consumer_output { |
251 | int enabled; | |
252 | char *path; | |
253 | char *control_uri; | |
254 | char *data_uri; | |
255 | }; | |
256 | ||
1501a7f3 JG |
257 | static int config_entry_handler_filter(struct handler_filter_args *args, |
258 | const char *section, const char *name, const char *value) | |
259 | { | |
260 | int ret = 0; | |
261 | struct config_entry entry = { section, name, value }; | |
262 | ||
263 | assert(args); | |
264 | ||
265 | if (!section || !name || !value) { | |
266 | ret = -EIO; | |
267 | goto end; | |
268 | } | |
269 | ||
270 | if (args->section) { | |
271 | if (strcmp(args->section, section)) { | |
272 | goto end; | |
273 | } | |
274 | } | |
275 | ||
276 | ret = args->handler(&entry, args->user_data); | |
277 | end: | |
278 | return ret; | |
279 | } | |
280 | ||
281 | LTTNG_HIDDEN | |
282 | int config_get_section_entries(const char *override_path, const char *section, | |
283 | config_entry_handler_cb handler, void *user_data) | |
284 | { | |
285 | int ret = 0; | |
4f00620d | 286 | const char *path; |
1501a7f3 JG |
287 | FILE *config_file = NULL; |
288 | struct handler_filter_args filter = { section, handler, user_data }; | |
289 | ||
7ab02a27 DG |
290 | /* First, try system-wide conf. file. */ |
291 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
292 | ||
293 | config_file = fopen(path, "r"); | |
294 | if (config_file) { | |
295 | DBG("Loading daemon conf file at %s", path); | |
296 | /* | |
297 | * Return value is not very important here since error or not, we | |
298 | * continue and try the next possible conf. file. | |
299 | */ | |
300 | (void) ini_parse_file(config_file, | |
301 | (ini_entry_handler) config_entry_handler_filter, | |
302 | (void *) &filter); | |
303 | fclose(config_file); | |
304 | } | |
305 | ||
306 | /* Second is the user local configuration. */ | |
307 | path = utils_get_home_dir(); | |
308 | if (path) { | |
309 | char fullpath[PATH_MAX]; | |
310 | ||
311 | ret = snprintf(fullpath, sizeof(fullpath), | |
312 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
313 | if (ret < 0) { | |
314 | PERROR("snprintf user conf. path"); | |
315 | goto error; | |
316 | } | |
317 | ||
318 | config_file = fopen(fullpath, "r"); | |
319 | if (config_file) { | |
320 | DBG("Loading daemon user conf file at %s", path); | |
321 | /* | |
322 | * Return value is not very important here since error or not, we | |
323 | * continue and try the next possible conf. file. | |
324 | */ | |
325 | (void) ini_parse_file(config_file, | |
326 | (ini_entry_handler) config_entry_handler_filter, | |
327 | (void *) &filter); | |
328 | fclose(config_file); | |
329 | } | |
330 | } | |
331 | ||
332 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
333 | if (override_path) { |
334 | config_file = fopen(override_path, "r"); | |
335 | if (config_file) { | |
7ab02a27 DG |
336 | DBG("Loading daemon command line conf file at %s", override_path); |
337 | (void) ini_parse_file(config_file, | |
338 | (ini_entry_handler) config_entry_handler_filter, | |
339 | (void *) &filter); | |
340 | fclose(config_file); | |
1501a7f3 JG |
341 | } else { |
342 | ERR("Failed to open daemon configuration file at %s", | |
343 | override_path); | |
344 | ret = -ENOENT; | |
7ab02a27 | 345 | goto error; |
1501a7f3 JG |
346 | } |
347 | } | |
348 | ||
7ab02a27 DG |
349 | /* Everything went well. */ |
350 | ret = 0; | |
1501a7f3 | 351 | |
7ab02a27 | 352 | error: |
1501a7f3 JG |
353 | return ret; |
354 | } | |
355 | ||
356 | LTTNG_HIDDEN | |
357 | int config_parse_value(const char *value) | |
358 | { | |
359 | int i, ret = 0; | |
360 | char *endptr, *lower_str; | |
361 | size_t len; | |
362 | unsigned long v; | |
363 | ||
364 | len = strlen(value); | |
365 | if (!len) { | |
366 | ret = -1; | |
367 | goto end; | |
368 | } | |
369 | ||
370 | v = strtoul(value, &endptr, 10); | |
371 | if (endptr != value) { | |
372 | ret = v; | |
373 | goto end; | |
374 | } | |
375 | ||
376 | lower_str = zmalloc(len + 1); | |
377 | if (!lower_str) { | |
378 | PERROR("zmalloc"); | |
379 | ret = -errno; | |
380 | goto end; | |
381 | } | |
382 | ||
383 | for (i = 0; i < len; i++) { | |
384 | lower_str[i] = tolower(value[i]); | |
385 | } | |
386 | ||
387 | if (!strcmp(lower_str, config_str_yes) || | |
388 | !strcmp(lower_str, config_str_true) || | |
389 | !strcmp(lower_str, config_str_on)) { | |
390 | ret = 1; | |
391 | } else if (!strcmp(lower_str, config_str_no) || | |
392 | !strcmp(lower_str, config_str_false) || | |
393 | !strcmp(lower_str, config_str_off)) { | |
394 | ret = 0; | |
395 | } else { | |
396 | ret = -1; | |
397 | } | |
398 | ||
399 | free(lower_str); | |
400 | end: | |
401 | return ret; | |
402 | } | |
36f2332b JG |
403 | |
404 | /* | |
405 | * Returns a xmlChar string which must be released using xmlFree(). | |
406 | */ | |
407 | static xmlChar *encode_string(const char *in_str) | |
408 | { | |
409 | xmlChar *out_str = NULL; | |
410 | xmlCharEncodingHandlerPtr handler; | |
411 | int out_len, ret, in_len; | |
412 | ||
413 | assert(in_str); | |
414 | ||
415 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
416 | if (!handler) { | |
417 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
418 | goto end; | |
419 | } | |
420 | ||
421 | in_len = strlen(in_str); | |
422 | /* | |
f76d886f JG |
423 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
424 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 425 | */ |
f76d886f | 426 | out_len = (in_len * 4) + 1; |
36f2332b JG |
427 | out_str = xmlMalloc(out_len); |
428 | if (!out_str) { | |
429 | goto end; | |
430 | } | |
431 | ||
432 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
433 | if (ret < 0) { | |
434 | xmlFree(out_str); | |
435 | out_str = NULL; | |
436 | goto end; | |
437 | } | |
438 | ||
439 | /* out_len is now the size of out_str */ | |
440 | out_str[out_len] = '\0'; | |
441 | end: | |
442 | return out_str; | |
443 | } | |
444 | ||
445 | LTTNG_HIDDEN | |
705bb62f | 446 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
447 | { |
448 | int ret; | |
449 | struct config_writer *writer; | |
450 | xmlOutputBufferPtr buffer; | |
451 | ||
452 | writer = zmalloc(sizeof(struct config_writer)); | |
453 | if (!writer) { | |
454 | PERROR("zmalloc config_writer_create"); | |
455 | goto end; | |
456 | } | |
457 | ||
458 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
459 | if (!buffer) { | |
460 | goto error_destroy; | |
461 | } | |
462 | ||
463 | writer->writer = xmlNewTextWriter(buffer); | |
464 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
465 | config_xml_encoding, NULL); | |
466 | if (ret < 0) { | |
467 | goto error_destroy; | |
468 | } | |
469 | ||
470 | ret = xmlTextWriterSetIndentString(writer->writer, | |
471 | BAD_CAST config_xml_indent_string); | |
705bb62f | 472 | if (ret) { |
36f2332b JG |
473 | goto error_destroy; |
474 | } | |
475 | ||
705bb62f JRJ |
476 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
477 | if (ret) { | |
36f2332b JG |
478 | goto error_destroy; |
479 | } | |
480 | ||
481 | end: | |
482 | return writer; | |
483 | error_destroy: | |
484 | config_writer_destroy(writer); | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | LTTNG_HIDDEN | |
489 | int config_writer_destroy(struct config_writer *writer) | |
490 | { | |
491 | int ret = 0; | |
492 | ||
493 | if (!writer) { | |
494 | ret = -EINVAL; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
499 | WARN("Could not close XML document"); | |
500 | ret = -EIO; | |
501 | } | |
502 | ||
503 | if (writer->writer) { | |
504 | xmlFreeTextWriter(writer->writer); | |
505 | } | |
506 | ||
507 | free(writer); | |
508 | end: | |
509 | return ret; | |
510 | } | |
511 | ||
512 | LTTNG_HIDDEN | |
513 | int config_writer_open_element(struct config_writer *writer, | |
514 | const char *element_name) | |
515 | { | |
516 | int ret; | |
517 | xmlChar *encoded_element_name; | |
518 | ||
519 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
520 | ret = -1; | |
521 | goto end; | |
522 | } | |
523 | ||
524 | encoded_element_name = encode_string(element_name); | |
525 | if (!encoded_element_name) { | |
526 | ret = -1; | |
527 | goto end; | |
528 | } | |
529 | ||
530 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
531 | xmlFree(encoded_element_name); | |
532 | end: | |
28676a1d | 533 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
534 | } |
535 | ||
e10b6a1c JG |
536 | LTTNG_HIDDEN |
537 | int config_writer_write_attribute(struct config_writer *writer, | |
538 | const char *name, const char *value) | |
539 | { | |
540 | int ret; | |
541 | xmlChar *encoded_name = NULL; | |
542 | xmlChar *encoded_value = NULL; | |
543 | ||
544 | if (!writer || !writer->writer || !name || !name[0]) { | |
545 | ret = -1; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | encoded_name = encode_string(name); | |
550 | if (!encoded_name) { | |
551 | ret = -1; | |
552 | goto end; | |
553 | } | |
554 | ||
555 | encoded_value = encode_string(value); | |
556 | if (!encoded_value) { | |
557 | ret = -1; | |
558 | goto end; | |
559 | } | |
560 | ||
561 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
562 | encoded_value); | |
563 | end: | |
564 | xmlFree(encoded_name); | |
565 | xmlFree(encoded_value); | |
566 | return ret >= 0 ? 0 : ret; | |
567 | } | |
568 | ||
36f2332b JG |
569 | LTTNG_HIDDEN |
570 | int config_writer_close_element(struct config_writer *writer) | |
571 | { | |
572 | int ret; | |
573 | ||
574 | if (!writer || !writer->writer) { | |
575 | ret = -1; | |
576 | goto end; | |
577 | } | |
578 | ||
579 | ret = xmlTextWriterEndElement(writer->writer); | |
580 | end: | |
28676a1d | 581 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
582 | } |
583 | ||
584 | LTTNG_HIDDEN | |
585 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
586 | const char *element_name, uint64_t value) | |
587 | { | |
588 | int ret; | |
589 | xmlChar *encoded_element_name; | |
590 | ||
591 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
592 | ret = -1; | |
593 | goto end; | |
594 | } | |
595 | ||
596 | encoded_element_name = encode_string(element_name); | |
597 | if (!encoded_element_name) { | |
598 | ret = -1; | |
599 | goto end; | |
600 | } | |
601 | ||
602 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
603 | encoded_element_name, "%" PRIu64, value); | |
604 | xmlFree(encoded_element_name); | |
605 | end: | |
28676a1d | 606 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
607 | } |
608 | ||
609 | LTTNG_HIDDEN | |
610 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
611 | const char *element_name, int64_t value) | |
612 | { | |
613 | int ret; | |
614 | xmlChar *encoded_element_name; | |
615 | ||
616 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
617 | ret = -1; | |
618 | goto end; | |
619 | } | |
620 | ||
621 | encoded_element_name = encode_string(element_name); | |
622 | if (!encoded_element_name) { | |
623 | ret = -1; | |
624 | goto end; | |
625 | } | |
626 | ||
627 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
628 | encoded_element_name, "%" PRIi64, value); | |
629 | xmlFree(encoded_element_name); | |
630 | end: | |
28676a1d | 631 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
632 | } |
633 | ||
634 | LTTNG_HIDDEN | |
635 | int config_writer_write_element_bool(struct config_writer *writer, | |
636 | const char *element_name, int value) | |
637 | { | |
638 | return config_writer_write_element_string(writer, element_name, | |
639 | value ? config_xml_true : config_xml_false); | |
640 | } | |
641 | ||
642 | LTTNG_HIDDEN | |
643 | int config_writer_write_element_string(struct config_writer *writer, | |
644 | const char *element_name, const char *value) | |
645 | { | |
646 | int ret; | |
647 | xmlChar *encoded_element_name = NULL; | |
648 | xmlChar *encoded_value = NULL; | |
649 | ||
650 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
651 | !value) { | |
652 | ret = -1; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | encoded_element_name = encode_string(element_name); | |
657 | if (!encoded_element_name) { | |
658 | ret = -1; | |
659 | goto end; | |
660 | } | |
661 | ||
662 | encoded_value = encode_string(value); | |
663 | if (!encoded_value) { | |
664 | ret = -1; | |
665 | goto end; | |
666 | } | |
667 | ||
668 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 669 | encoded_value); |
36f2332b JG |
670 | end: |
671 | xmlFree(encoded_element_name); | |
672 | xmlFree(encoded_value); | |
28676a1d | 673 | return ret >= 0 ? 0 : ret; |
36f2332b | 674 | } |
dcf266c0 JG |
675 | |
676 | static | |
677 | void xml_error_handler(void *ctx, const char *format, ...) | |
678 | { | |
679 | char *errMsg; | |
680 | va_list args; | |
681 | int ret; | |
682 | ||
683 | va_start(args, format); | |
684 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 685 | va_end(args); |
dcf266c0 JG |
686 | if (ret == -1) { |
687 | ERR("String allocation failed in xml error handler"); | |
688 | return; | |
689 | } | |
dcf266c0 JG |
690 | |
691 | fprintf(stderr, "XML Error: %s", errMsg); | |
692 | free(errMsg); | |
693 | } | |
694 | ||
695 | static | |
696 | void fini_session_config_validation_ctx( | |
697 | struct session_config_validation_ctx *ctx) | |
698 | { | |
699 | if (ctx->parser_ctx) { | |
700 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
701 | } | |
702 | ||
703 | if (ctx->schema) { | |
704 | xmlSchemaFree(ctx->schema); | |
705 | } | |
706 | ||
707 | if (ctx->schema_validation_ctx) { | |
708 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
709 | } | |
710 | ||
711 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
712 | } | |
713 | ||
54e399cb JG |
714 | static |
715 | char *get_session_config_xsd_path() | |
716 | { | |
717 | char *xsd_path; | |
e8fa9fb0 | 718 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
719 | size_t base_path_len; |
720 | size_t max_path_len; | |
721 | ||
722 | if (!base_path) { | |
723 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
724 | } | |
725 | ||
726 | base_path_len = strlen(base_path); | |
727 | max_path_len = base_path_len + | |
728 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
729 | xsd_path = zmalloc(max_path_len); | |
730 | if (!xsd_path) { | |
731 | goto end; | |
732 | } | |
733 | ||
00a7f6f8 | 734 | strcpy(xsd_path, base_path); |
54e399cb JG |
735 | if (xsd_path[base_path_len - 1] != '/') { |
736 | xsd_path[base_path_len++] = '/'; | |
737 | } | |
738 | ||
00a7f6f8 | 739 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
740 | end: |
741 | return xsd_path; | |
742 | } | |
743 | ||
dcf266c0 JG |
744 | static |
745 | int init_session_config_validation_ctx( | |
746 | struct session_config_validation_ctx *ctx) | |
747 | { | |
748 | int ret; | |
54e399cb JG |
749 | char *xsd_path = get_session_config_xsd_path(); |
750 | ||
751 | if (!xsd_path) { | |
752 | ret = -LTTNG_ERR_NOMEM; | |
753 | goto end; | |
754 | } | |
dcf266c0 | 755 | |
54e399cb | 756 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
757 | if (!ctx->parser_ctx) { |
758 | ERR("XSD parser context creation failed"); | |
759 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
760 | goto end; | |
761 | } | |
762 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
763 | xml_error_handler, NULL); | |
764 | ||
765 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
766 | if (!ctx->schema) { | |
767 | ERR("XSD parsing failed"); | |
768 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
769 | goto end; | |
770 | } | |
771 | ||
772 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
773 | if (!ctx->schema_validation_ctx) { | |
774 | ERR("XSD validation context creation failed"); | |
775 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
776 | goto end; | |
777 | } | |
778 | ||
779 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
780 | xml_error_handler, NULL); | |
781 | ret = 0; | |
782 | ||
783 | end: | |
784 | if (ret) { | |
785 | fini_session_config_validation_ctx(ctx); | |
786 | } | |
787 | ||
54e399cb | 788 | free(xsd_path); |
dcf266c0 JG |
789 | return ret; |
790 | } | |
791 | ||
792 | static | |
793 | int parse_uint(xmlChar *str, uint64_t *val) | |
794 | { | |
795 | int ret; | |
796 | char *endptr; | |
797 | ||
798 | if (!str || !val) { | |
799 | ret = -1; | |
800 | goto end; | |
801 | } | |
802 | ||
803 | *val = strtoull((const char *) str, &endptr, 10); | |
804 | if (!endptr || *endptr) { | |
805 | ret = -1; | |
806 | } else { | |
807 | ret = 0; | |
808 | } | |
809 | ||
810 | end: | |
811 | return ret; | |
812 | } | |
813 | ||
814 | static | |
815 | int parse_int(xmlChar *str, int64_t *val) | |
816 | { | |
817 | int ret; | |
818 | char *endptr; | |
819 | ||
820 | if (!str || !val) { | |
821 | ret = -1; | |
822 | goto end; | |
823 | } | |
824 | ||
825 | *val = strtoll((const char *) str, &endptr, 10); | |
826 | if (!endptr || *endptr) { | |
827 | ret = -1; | |
828 | } else { | |
829 | ret = 0; | |
830 | } | |
831 | ||
832 | end: | |
833 | return ret; | |
834 | } | |
835 | ||
836 | static | |
837 | int parse_bool(xmlChar *str, int *val) | |
838 | { | |
839 | int ret = 0; | |
840 | ||
841 | if (!str || !val) { | |
842 | ret = -1; | |
843 | goto end; | |
844 | } | |
845 | ||
846 | if (!strcmp((const char *) str, config_xml_true)) { | |
847 | *val = 1; | |
848 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
849 | *val = 0; | |
850 | } else { | |
851 | WARN("Invalid boolean value encoutered (%s).", | |
852 | (const char *) str); | |
853 | ret = -1; | |
854 | } | |
855 | end: | |
856 | return ret; | |
857 | } | |
858 | ||
859 | static | |
860 | int get_domain_type(xmlChar *domain) | |
861 | { | |
862 | int ret; | |
863 | ||
864 | if (!domain) { | |
865 | goto error; | |
866 | } | |
867 | ||
868 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
869 | ret = LTTNG_DOMAIN_KERNEL; | |
870 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
871 | ret = LTTNG_DOMAIN_UST; | |
872 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
873 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
874 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
875 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
876 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
877 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
878 | } else { |
879 | goto error; | |
880 | } | |
881 | ||
882 | return ret; | |
883 | error: | |
884 | return -1; | |
885 | } | |
886 | ||
887 | static | |
888 | int get_buffer_type(xmlChar *buffer_type) | |
889 | { | |
890 | int ret; | |
891 | ||
892 | if (!buffer_type) { | |
893 | goto error; | |
894 | } | |
895 | ||
896 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
897 | ret = LTTNG_BUFFER_GLOBAL; | |
898 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
899 | ret = LTTNG_BUFFER_PER_UID; | |
900 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
901 | ret = LTTNG_BUFFER_PER_PID; | |
902 | } else { | |
903 | goto error; | |
904 | } | |
905 | ||
906 | return ret; | |
907 | error: | |
908 | return -1; | |
909 | } | |
910 | ||
911 | static | |
912 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
913 | { | |
914 | int ret; | |
915 | ||
916 | if (!overwrite_mode) { | |
917 | goto error; | |
918 | } | |
919 | ||
920 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
921 | ret = 1; | |
922 | } else if (!strcmp((char *) overwrite_mode, | |
923 | config_overwrite_mode_discard)) { | |
924 | ret = 0; | |
925 | } else { | |
926 | goto error; | |
927 | } | |
928 | ||
929 | return ret; | |
930 | error: | |
931 | return -1; | |
932 | } | |
933 | ||
934 | static | |
935 | int get_output_type(xmlChar *output_type) | |
936 | { | |
937 | int ret; | |
938 | ||
939 | if (!output_type) { | |
940 | goto error; | |
941 | } | |
942 | ||
943 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
944 | ret = LTTNG_EVENT_MMAP; | |
945 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
946 | ret = LTTNG_EVENT_SPLICE; | |
947 | } else { | |
948 | goto error; | |
949 | } | |
950 | ||
951 | return ret; | |
952 | error: | |
953 | return -1; | |
954 | } | |
955 | ||
956 | static | |
957 | int get_event_type(xmlChar *event_type) | |
958 | { | |
959 | int ret; | |
960 | ||
961 | if (!event_type) { | |
962 | goto error; | |
963 | } | |
964 | ||
965 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
966 | ret = LTTNG_EVENT_ALL; | |
967 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
968 | ret = LTTNG_EVENT_TRACEPOINT; | |
969 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
970 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
971 | } else if (!strcmp((char *) event_type, |
972 | config_event_type_userspace_probe)) { | |
973 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
974 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
975 | ret = LTTNG_EVENT_FUNCTION; | |
976 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 977 | config_event_type_function_entry)) { |
dcf266c0 JG |
978 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
979 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
980 | ret = LTTNG_EVENT_NOOP; | |
981 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
982 | ret = LTTNG_EVENT_SYSCALL; | |
983 | } else { | |
984 | goto error; | |
985 | } | |
986 | ||
987 | return ret; | |
988 | error: | |
989 | return -1; | |
990 | } | |
991 | ||
992 | static | |
993 | int get_loglevel_type(xmlChar *loglevel_type) | |
994 | { | |
995 | int ret; | |
996 | ||
997 | if (!loglevel_type) { | |
998 | goto error; | |
999 | } | |
1000 | ||
1001 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1002 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1003 | } else if (!strcmp((char *) loglevel_type, | |
1004 | config_loglevel_type_range)) { | |
1005 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1006 | } else if (!strcmp((char *) loglevel_type, | |
1007 | config_loglevel_type_single)) { | |
1008 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1009 | } else { | |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | return ret; | |
1014 | error: | |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Return the context type or -1 on error. | |
1020 | */ | |
1021 | static | |
1022 | int get_context_type(xmlChar *context_type) | |
1023 | { | |
1024 | int ret; | |
1025 | ||
1026 | if (!context_type) { | |
1027 | goto error; | |
1028 | } | |
1029 | ||
1030 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1031 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1032 | } else if (!strcmp((char *) context_type, | |
1033 | config_event_context_procname)) { | |
1034 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1035 | } else if (!strcmp((char *) context_type, | |
1036 | config_event_context_prio)) { | |
1037 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1038 | } else if (!strcmp((char *) context_type, | |
1039 | config_event_context_nice)) { | |
1040 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1041 | } else if (!strcmp((char *) context_type, | |
1042 | config_event_context_vpid)) { | |
1043 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1044 | } else if (!strcmp((char *) context_type, | |
1045 | config_event_context_tid)) { | |
1046 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1047 | } else if (!strcmp((char *) context_type, | |
1048 | config_event_context_vtid)) { | |
1049 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1050 | } else if (!strcmp((char *) context_type, | |
1051 | config_event_context_ppid)) { | |
1052 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1053 | } else if (!strcmp((char *) context_type, | |
1054 | config_event_context_vppid)) { | |
1055 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1056 | } else if (!strcmp((char *) context_type, | |
1057 | config_event_context_pthread_id)) { | |
1058 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1059 | } else if (!strcmp((char *) context_type, | |
1060 | config_event_context_hostname)) { | |
1061 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1062 | } else if (!strcmp((char *) context_type, | |
1063 | config_event_context_ip)) { | |
1064 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1065 | } else if (!strcmp((char *) context_type, |
1066 | config_event_context_interruptible)) { | |
1067 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1068 | } else if (!strcmp((char *) context_type, | |
1069 | config_event_context_preemptible)) { | |
1070 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1071 | } else if (!strcmp((char *) context_type, | |
1072 | config_event_context_need_reschedule)) { | |
1073 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1074 | } else if (!strcmp((char *) context_type, | |
1075 | config_event_context_migratable)) { | |
1076 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1077 | } else if (!strcmp((char *) context_type, |
1078 | config_event_context_callstack_user)) { | |
1079 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1080 | } else if (!strcmp((char *) context_type, | |
1081 | config_event_context_callstack_kernel)) { | |
1082 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1083 | } else if (!strcmp((char *) context_type, |
1084 | config_event_context_cgroup_ns)) { | |
1085 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1086 | } else if (!strcmp((char *) context_type, | |
1087 | config_event_context_ipc_ns)) { | |
1088 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1089 | } else if (!strcmp((char *) context_type, | |
1090 | config_event_context_mnt_ns)) { | |
1091 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1092 | } else if (!strcmp((char *) context_type, | |
1093 | config_event_context_net_ns)) { | |
1094 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1095 | } else if (!strcmp((char *) context_type, | |
1096 | config_event_context_pid_ns)) { | |
1097 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
1098 | } else if (!strcmp((char *) context_type, | |
1099 | config_event_context_user_ns)) { | |
1100 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1101 | } else if (!strcmp((char *) context_type, | |
1102 | config_event_context_uts_ns)) { | |
1103 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1104 | } else if (!strcmp((char *) context_type, |
1105 | config_event_context_uid)) { | |
1106 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1107 | } else if (!strcmp((char *) context_type, | |
1108 | config_event_context_euid)) { | |
1109 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1110 | } else if (!strcmp((char *) context_type, | |
1111 | config_event_context_suid)) { | |
1112 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1113 | } else if (!strcmp((char *) context_type, | |
1114 | config_event_context_gid)) { | |
1115 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1116 | } else if (!strcmp((char *) context_type, | |
1117 | config_event_context_egid)) { | |
1118 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1119 | } else if (!strcmp((char *) context_type, | |
1120 | config_event_context_sgid)) { | |
1121 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1122 | } else if (!strcmp((char *) context_type, | |
1123 | config_event_context_vuid)) { | |
1124 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1125 | } else if (!strcmp((char *) context_type, | |
1126 | config_event_context_veuid)) { | |
1127 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1128 | } else if (!strcmp((char *) context_type, | |
1129 | config_event_context_vsuid)) { | |
1130 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1131 | } else if (!strcmp((char *) context_type, | |
1132 | config_event_context_vgid)) { | |
1133 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1134 | } else if (!strcmp((char *) context_type, | |
1135 | config_event_context_vegid)) { | |
1136 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1137 | } else if (!strcmp((char *) context_type, | |
1138 | config_event_context_vsgid)) { | |
1139 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1140 | } else { |
1141 | goto error; | |
1142 | } | |
1143 | ||
1144 | return ret; | |
1145 | error: | |
1146 | return -1; | |
1147 | } | |
1148 | ||
1149 | static | |
1150 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1151 | { | |
1152 | int ret; | |
1153 | xmlNodePtr node; | |
1154 | ||
1155 | for (node = xmlFirstElementChild(domain_node); node; | |
1156 | node = xmlNextElementSibling(node)) { | |
1157 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1158 | /* domain type */ | |
1159 | xmlChar *node_content = xmlNodeGetContent(node); | |
1160 | if (!node_content) { | |
1161 | ret = -LTTNG_ERR_NOMEM; | |
1162 | goto end; | |
1163 | } | |
1164 | ||
1165 | ret = get_domain_type(node_content); | |
1166 | free(node_content); | |
1167 | if (ret < 0) { | |
1168 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1169 | goto end; | |
1170 | } | |
1171 | ||
1172 | domain->type = ret; | |
1173 | } else if (!strcmp((const char *) node->name, | |
1174 | config_element_buffer_type)) { | |
1175 | /* buffer type */ | |
1176 | xmlChar *node_content = xmlNodeGetContent(node); | |
1177 | if (!node_content) { | |
1178 | ret = -LTTNG_ERR_NOMEM; | |
1179 | goto end; | |
1180 | } | |
1181 | ||
1182 | ret = get_buffer_type(node_content); | |
1183 | free(node_content); | |
1184 | if (ret < 0) { | |
1185 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1186 | goto end; | |
1187 | } | |
1188 | ||
1189 | domain->buf_type = ret; | |
1190 | } | |
1191 | } | |
1192 | ret = 0; | |
1193 | end: | |
1194 | return ret; | |
1195 | } | |
1196 | ||
1197 | static | |
1198 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1199 | char **data_uri) | |
1200 | { | |
1201 | xmlNodePtr node; | |
1202 | ||
1203 | for (node = xmlFirstElementChild(net_output_node); node; | |
1204 | node = xmlNextElementSibling(node)) { | |
1205 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1206 | /* control_uri */ | |
1207 | *control_uri = (char *) xmlNodeGetContent(node); | |
1208 | if (!*control_uri) { | |
1209 | break; | |
1210 | } | |
1211 | } else { | |
1212 | /* data_uri */ | |
1213 | *data_uri = (char *) xmlNodeGetContent(node); | |
1214 | if (!*data_uri) { | |
1215 | break; | |
1216 | } | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1221 | } | |
1222 | ||
1223 | static | |
1224 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1225 | struct consumer_output *output) | |
1226 | { | |
1227 | int ret; | |
1228 | xmlNodePtr node; | |
1229 | ||
1230 | assert(output); | |
1231 | ||
1232 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1233 | node = xmlNextElementSibling(node)) { | |
1234 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1235 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1236 | ||
1237 | /* enabled */ | |
1238 | if (!enabled_str) { | |
1239 | ret = -LTTNG_ERR_NOMEM; | |
1240 | goto end; | |
1241 | } | |
1242 | ||
1243 | ret = parse_bool(enabled_str, &output->enabled); | |
1244 | free(enabled_str); | |
1245 | if (ret) { | |
1246 | goto end; | |
1247 | } | |
1248 | } else { | |
1249 | xmlNodePtr output_type_node; | |
1250 | ||
1251 | /* destination */ | |
1252 | output_type_node = xmlFirstElementChild(node); | |
1253 | if (!output_type_node) { | |
1254 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1255 | goto end; | |
1256 | } | |
1257 | ||
1258 | if (!strcmp((const char *) output_type_node->name, | |
1259 | config_element_path)) { | |
1260 | /* path */ | |
1261 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1262 | if (!output->path) { | |
1263 | ret = -LTTNG_ERR_NOMEM; | |
1264 | goto end; | |
1265 | } | |
1266 | } else { | |
1267 | /* net_output */ | |
1268 | ret = get_net_output_uris(output_type_node, | |
1269 | &output->control_uri, &output->data_uri); | |
1270 | if (ret) { | |
1271 | goto end; | |
1272 | } | |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | ret = 0; | |
1277 | ||
1278 | end: | |
1279 | if (ret) { | |
1280 | free(output->path); | |
1281 | free(output->control_uri); | |
1282 | free(output->data_uri); | |
1283 | memset(output, 0, sizeof(struct consumer_output)); | |
1284 | } | |
1285 | return ret; | |
1286 | } | |
1287 | ||
1288 | static | |
95681498 JG |
1289 | int create_session_net_output(const char *name, const char *control_uri, |
1290 | const char *data_uri) | |
dcf266c0 JG |
1291 | { |
1292 | int ret; | |
1293 | struct lttng_handle *handle; | |
1294 | const char *uri = NULL; | |
1295 | ||
1296 | assert(name); | |
dcf266c0 | 1297 | |
95681498 | 1298 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1299 | if (!handle) { |
1300 | ret = -LTTNG_ERR_NOMEM; | |
1301 | goto end; | |
1302 | } | |
1303 | ||
1304 | if (!control_uri || !data_uri) { | |
1305 | uri = control_uri ? control_uri : data_uri; | |
1306 | control_uri = uri; | |
1307 | data_uri = uri; | |
1308 | } | |
1309 | ||
1310 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1311 | lttng_destroy_handle(handle); | |
1312 | end: | |
1313 | return ret; | |
1314 | } | |
1315 | ||
1316 | static | |
1b08cbce JR |
1317 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1318 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1319 | { |
1320 | int ret; | |
1321 | xmlNodePtr node = NULL; | |
1322 | xmlNodePtr snapshot_output_list_node; | |
1323 | xmlNodePtr snapshot_output_node; | |
1324 | ||
1325 | assert(session_name); | |
1326 | ||
1327 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1328 | if (ret) { | |
1329 | goto end; | |
1330 | } | |
1331 | ||
1332 | if (!output_node) { | |
1333 | goto end; | |
1334 | } | |
1335 | ||
1336 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1337 | ||
1338 | /* Parse and create snapshot outputs */ | |
1339 | ||
1340 | for (snapshot_output_node = | |
1341 | xmlFirstElementChild(snapshot_output_list_node); | |
1342 | snapshot_output_node; snapshot_output_node = | |
1343 | xmlNextElementSibling(snapshot_output_node)) { | |
1344 | char *name = NULL; | |
1345 | uint64_t max_size = UINT64_MAX; | |
1346 | struct consumer_output output = { 0 }; | |
1347 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1348 | const char *control_uri = NULL; |
1349 | const char *data_uri = NULL; | |
1350 | const char *path = NULL; | |
dcf266c0 JG |
1351 | |
1352 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1353 | node = xmlNextElementSibling(node)) { | |
1354 | if (!strcmp((const char *) node->name, | |
1355 | config_element_name)) { | |
1356 | /* name */ | |
1357 | name = (char *) xmlNodeGetContent(node); | |
1358 | if (!name) { | |
1359 | ret = -LTTNG_ERR_NOMEM; | |
1360 | goto error_snapshot_output; | |
1361 | } | |
1362 | } else if (!strcmp((const char *) node->name, | |
1363 | config_element_max_size)) { | |
1364 | xmlChar *content = xmlNodeGetContent(node); | |
1365 | ||
1366 | /* max_size */ | |
1367 | if (!content) { | |
1368 | ret = -LTTNG_ERR_NOMEM; | |
1369 | goto error_snapshot_output; | |
1370 | } | |
1371 | ret = parse_uint(content, &max_size); | |
1372 | free(content); | |
1373 | if (ret) { | |
1374 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1375 | goto error_snapshot_output; | |
1376 | } | |
1377 | } else { | |
1378 | /* consumer_output */ | |
1379 | ret = process_consumer_output(node, &output); | |
1380 | if (ret) { | |
1381 | goto error_snapshot_output; | |
1382 | } | |
1383 | } | |
1384 | } | |
1385 | ||
21a3f144 JR |
1386 | control_uri = output.control_uri; |
1387 | data_uri = output.data_uri; | |
1388 | path = output.path; | |
1389 | ||
1b08cbce JR |
1390 | if (overrides) { |
1391 | if (overrides->path_url) { | |
1b08cbce | 1392 | path = overrides->path_url; |
21a3f144 JR |
1393 | /* Control/data_uri are null */ |
1394 | control_uri = NULL; | |
1395 | data_uri = NULL; | |
1b08cbce JR |
1396 | } else { |
1397 | if (overrides->ctrl_url) { | |
1b08cbce | 1398 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1399 | /* path is null */ |
1400 | path = NULL; | |
1b08cbce JR |
1401 | } |
1402 | if (overrides->data_url) { | |
1b08cbce | 1403 | data_uri = overrides->data_url; |
21a3f144 JR |
1404 | /* path is null */ |
1405 | path = NULL; | |
1b08cbce JR |
1406 | } |
1407 | } | |
1b08cbce JR |
1408 | } |
1409 | ||
dcf266c0 JG |
1410 | snapshot_output = lttng_snapshot_output_create(); |
1411 | if (!snapshot_output) { | |
1412 | ret = -LTTNG_ERR_NOMEM; | |
1413 | goto error_snapshot_output; | |
1414 | } | |
1415 | ||
1416 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1417 | if (ret) { | |
1418 | goto error_snapshot_output; | |
1419 | } | |
1420 | ||
1421 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1422 | if (ret) { | |
1423 | goto error_snapshot_output; | |
1424 | } | |
1425 | ||
1b08cbce JR |
1426 | if (path) { |
1427 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1428 | snapshot_output); |
1429 | if (ret) { | |
1430 | goto error_snapshot_output; | |
1431 | } | |
1432 | } else { | |
1b08cbce JR |
1433 | if (control_uri) { |
1434 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1435 | snapshot_output); |
1436 | if (ret) { | |
1437 | goto error_snapshot_output; | |
1438 | } | |
1439 | } | |
1440 | ||
1b08cbce JR |
1441 | if (data_uri) { |
1442 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1443 | snapshot_output); |
1444 | if (ret) { | |
1445 | goto error_snapshot_output; | |
1446 | } | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1451 | error_snapshot_output: | |
1452 | free(name); | |
1453 | free(output.path); | |
1454 | free(output.control_uri); | |
1455 | free(output.data_uri); | |
1456 | lttng_snapshot_output_destroy(snapshot_output); | |
1457 | if (ret) { | |
1458 | goto end; | |
1459 | } | |
1460 | } | |
1461 | end: | |
1462 | return ret; | |
1463 | } | |
1464 | ||
1465 | static | |
1466 | int create_session(const char *name, | |
dcf266c0 | 1467 | xmlNodePtr output_node, |
1b08cbce JR |
1468 | uint64_t live_timer_interval, |
1469 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1470 | { |
1471 | int ret; | |
1472 | struct consumer_output output = { 0 }; | |
1473 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1474 | const char *control_uri = NULL; |
1475 | const char *data_uri = NULL; | |
1476 | const char *path = NULL; | |
dcf266c0 JG |
1477 | |
1478 | assert(name); | |
dcf266c0 JG |
1479 | |
1480 | if (output_node) { | |
1481 | consumer_output_node = xmlFirstElementChild(output_node); | |
1482 | if (!consumer_output_node) { | |
1483 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1484 | goto end; | |
1485 | } | |
1486 | ||
1487 | if (strcmp((const char *) consumer_output_node->name, | |
1488 | config_element_consumer_output)) { | |
1489 | WARN("Invalid output type, expected %s node", | |
1490 | config_element_consumer_output); | |
1491 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1492 | goto end; | |
1493 | } | |
1494 | ||
1495 | ret = process_consumer_output(consumer_output_node, &output); | |
1496 | if (ret) { | |
1497 | goto end; | |
1498 | } | |
1499 | } | |
1500 | ||
21a3f144 JR |
1501 | control_uri = output.control_uri; |
1502 | data_uri = output.data_uri; | |
1503 | path = output.path; | |
1504 | ||
1b08cbce JR |
1505 | /* Check for override and apply them */ |
1506 | if (overrides) { | |
1507 | if (overrides->path_url) { | |
1b08cbce | 1508 | path = overrides->path_url; |
21a3f144 JR |
1509 | /* control/data_uri are null */; |
1510 | control_uri = NULL; | |
1511 | data_uri = NULL; | |
1b08cbce JR |
1512 | } else { |
1513 | if (overrides->ctrl_url) { | |
1b08cbce | 1514 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1515 | /* path is null */ |
1516 | path = NULL; | |
1b08cbce JR |
1517 | } |
1518 | if (overrides->data_url) { | |
1b08cbce | 1519 | data_uri = overrides->data_url; |
21a3f144 JR |
1520 | /* path is null */ |
1521 | path = NULL; | |
1b08cbce JR |
1522 | } |
1523 | } | |
1b08cbce JR |
1524 | } |
1525 | ||
21a3f144 | 1526 | |
1b08cbce | 1527 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1528 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1529 | goto end; | |
1530 | } | |
1531 | ||
1b08cbce | 1532 | if (control_uri || data_uri) { |
dcf266c0 JG |
1533 | /* network destination */ |
1534 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1535 | /* |
1536 | * URLs are provided for sure since the test above make sure that | |
1537 | * with a live timer the data and control URIs are provided. So, | |
1538 | * NULL is passed here and will be set right after. | |
1539 | */ | |
1540 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1541 | } else { |
1542 | ret = lttng_create_session(name, NULL); | |
1543 | } | |
1544 | if (ret) { | |
1545 | goto end; | |
1546 | } | |
1547 | ||
1b08cbce | 1548 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1549 | if (ret) { |
1550 | goto end; | |
dcf266c0 | 1551 | } |
95681498 | 1552 | |
dcf266c0 JG |
1553 | } else { |
1554 | /* either local output or no output */ | |
1b08cbce | 1555 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1556 | if (ret) { |
1557 | goto end; | |
1558 | } | |
1559 | } | |
1560 | end: | |
1561 | free(output.path); | |
1562 | free(output.control_uri); | |
1563 | free(output.data_uri); | |
1564 | return ret; | |
1565 | } | |
c1e83fb4 FD |
1566 | |
1567 | static | |
1568 | struct lttng_userspace_probe_location * | |
1569 | process_userspace_probe_function_attribute_node( | |
1570 | xmlNodePtr attribute_node) | |
1571 | { | |
c1e83fb4 | 1572 | xmlNodePtr function_attribute_node; |
717d2dba | 1573 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1574 | struct lttng_userspace_probe_location *location = NULL; |
1575 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1576 | ||
1577 | /* | |
1578 | * Process userspace probe location function attributes. The order of | |
1579 | * the fields are not guaranteed so we need to iterate over all fields | |
1580 | * and check at the end if everything we need for this location type is | |
1581 | * there. | |
1582 | */ | |
1583 | for (function_attribute_node = | |
1584 | xmlFirstElementChild(attribute_node); | |
1585 | function_attribute_node; | |
1586 | function_attribute_node = xmlNextElementSibling( | |
1587 | function_attribute_node)) { | |
1588 | /* Handle function name, binary path and lookup method. */ | |
1589 | if (!strcmp((const char *) function_attribute_node->name, | |
1590 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1591 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1592 | if (!function_name) { |
c1e83fb4 FD |
1593 | goto error; |
1594 | } | |
1595 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1596 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1597 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1598 | if (!binary_path) { |
c1e83fb4 FD |
1599 | goto error; |
1600 | } | |
1601 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1602 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1603 | char *lookup_method_name; |
c1e83fb4 | 1604 | |
717d2dba JG |
1605 | lookup_method_name = (char *) xmlNodeGetContent( |
1606 | function_attribute_node); | |
c1e83fb4 | 1607 | if (!lookup_method_name) { |
c1e83fb4 FD |
1608 | goto error; |
1609 | } | |
1610 | ||
1611 | /* | |
1612 | * function_default lookup method defaults to | |
1613 | * function_elf lookup method at the moment. | |
1614 | */ | |
1615 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1616 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1617 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1618 | if (!lookup_method) { | |
1619 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1620 | } |
1621 | } else { | |
717d2dba JG |
1622 | WARN("Unknown function lookup method"); |
1623 | } | |
1624 | ||
1625 | free(lookup_method_name); | |
1626 | if (!lookup_method) { | |
c1e83fb4 FD |
1627 | goto error; |
1628 | } | |
1629 | } else { | |
1630 | goto error; | |
1631 | } | |
1632 | ||
1633 | /* Check if all the necessary fields were found. */ | |
1634 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1635 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1636 | location = |
1637 | lttng_userspace_probe_location_function_create( | |
1638 | binary_path, function_name, | |
1639 | lookup_method); | |
717d2dba JG |
1640 | lookup_method = NULL; |
1641 | goto error; | |
c1e83fb4 FD |
1642 | } |
1643 | } | |
1644 | error: | |
717d2dba | 1645 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1646 | free(binary_path); |
1647 | free(function_name); | |
c1e83fb4 FD |
1648 | return location; |
1649 | } | |
1650 | ||
1651 | static | |
1652 | struct lttng_userspace_probe_location * | |
1653 | process_userspace_probe_tracepoint_attribute_node( | |
1654 | xmlNodePtr attribute_node) | |
1655 | { | |
c1e83fb4 | 1656 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1657 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1658 | struct lttng_userspace_probe_location *location = NULL; | |
1659 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1660 | ||
1661 | /* | |
1662 | * Process userspace probe location tracepoint attributes. The order of | |
1663 | * the fields are not guaranteed so we need to iterate over all fields | |
1664 | * and check at the end if everything we need for this location type is | |
1665 | * there. | |
1666 | */ | |
1667 | for (tracepoint_attribute_node = | |
1668 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1669 | tracepoint_attribute_node = xmlNextElementSibling( | |
1670 | tracepoint_attribute_node)) { | |
1671 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1672 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1673 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1674 | if (!probe_name) { |
c1e83fb4 FD |
1675 | goto error; |
1676 | } | |
1677 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1678 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1679 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1680 | if (!provider_name) { |
c1e83fb4 FD |
1681 | goto error; |
1682 | } | |
1683 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1684 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1685 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1686 | if (!binary_path) { |
c1e83fb4 FD |
1687 | goto error; |
1688 | } | |
1689 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1690 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1691 | char *lookup_method_name; |
c1e83fb4 | 1692 | |
717d2dba JG |
1693 | lookup_method_name = (char *) xmlNodeGetContent( |
1694 | tracepoint_attribute_node); | |
c1e83fb4 | 1695 | if (!lookup_method_name) { |
c1e83fb4 FD |
1696 | goto error; |
1697 | } | |
1698 | ||
1699 | if (!strcmp(lookup_method_name, | |
1700 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1701 | lookup_method = | |
1702 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1703 | if (!lookup_method) { | |
1704 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1705 | } |
1706 | } else { | |
717d2dba JG |
1707 | WARN("Unknown tracepoint lookup method"); |
1708 | } | |
1709 | ||
1710 | free(lookup_method_name); | |
1711 | if (!lookup_method) { | |
c1e83fb4 FD |
1712 | goto error; |
1713 | } | |
1714 | } else { | |
717d2dba | 1715 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1716 | goto error; |
1717 | } | |
1718 | ||
1719 | /* Check if all the necessary fields were found. */ | |
1720 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1721 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1722 | location = |
1723 | lttng_userspace_probe_location_tracepoint_create( | |
1724 | binary_path, provider_name, | |
1725 | probe_name, lookup_method); | |
6bd61b96 | 1726 | lookup_method = NULL; |
717d2dba | 1727 | goto error; |
c1e83fb4 FD |
1728 | } |
1729 | } | |
1730 | error: | |
717d2dba | 1731 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1732 | free(binary_path); |
c1e83fb4 | 1733 | free(provider_name); |
717d2dba | 1734 | free(probe_name); |
c1e83fb4 FD |
1735 | return location; |
1736 | } | |
1737 | ||
dcf266c0 JG |
1738 | static |
1739 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1740 | struct lttng_event_probe_attr *attr) | |
1741 | { | |
1742 | int ret; | |
1743 | ||
1744 | assert(probe_attribute_node); | |
1745 | assert(attr); | |
1746 | ||
1747 | if (!strcmp((const char *) probe_attribute_node->name, | |
1748 | config_element_address)) { | |
1749 | xmlChar *content; | |
1750 | uint64_t addr = 0; | |
1751 | ||
1752 | /* addr */ | |
1753 | content = xmlNodeGetContent(probe_attribute_node); | |
1754 | if (!content) { | |
1755 | ret = -LTTNG_ERR_NOMEM; | |
1756 | goto end; | |
1757 | } | |
1758 | ||
1759 | ret = parse_uint(content, &addr); | |
1760 | free(content); | |
1761 | if (ret) { | |
1762 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1763 | goto end; | |
1764 | } | |
1765 | ||
1766 | attr->addr = addr; | |
1767 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1768 | config_element_offset)) { | |
1769 | xmlChar *content; | |
1770 | uint64_t offset = 0; | |
1771 | ||
1772 | /* offset */ | |
1773 | content = xmlNodeGetContent(probe_attribute_node); | |
1774 | if (!content) { | |
1775 | ret = -LTTNG_ERR_NOMEM; | |
1776 | goto end; | |
1777 | } | |
1778 | ||
1779 | ret = parse_uint(content, &offset); | |
1780 | free(content); | |
1781 | if (ret) { | |
1782 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1783 | goto end; | |
1784 | } | |
1785 | ||
1786 | attr->offset = offset; | |
1787 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1788 | config_element_symbol_name)) { | |
1789 | xmlChar *content; | |
dcf266c0 JG |
1790 | |
1791 | /* symbol_name */ | |
1792 | content = xmlNodeGetContent(probe_attribute_node); | |
1793 | if (!content) { | |
1794 | ret = -LTTNG_ERR_NOMEM; | |
1795 | goto end; | |
1796 | } | |
1797 | ||
d2e67842 JG |
1798 | ret = lttng_strncpy(attr->symbol_name, |
1799 | (const char *) content, | |
1800 | LTTNG_SYMBOL_NAME_LEN); | |
1801 | if (ret == -1) { | |
1802 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1803 | (const char *) content, | |
1804 | strlen((const char *) content), | |
1805 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1806 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1807 | free(content); | |
1808 | goto end; | |
1809 | } | |
dcf266c0 JG |
1810 | free(content); |
1811 | } | |
1812 | ret = 0; | |
1813 | end: | |
1814 | return ret; | |
1815 | } | |
1816 | ||
1817 | static | |
1818 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1819 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1820 | { |
d7b645e2 | 1821 | int ret = 0, i; |
dcf266c0 | 1822 | xmlNodePtr node; |
91744e14 | 1823 | struct lttng_event *event; |
dcf266c0 JG |
1824 | char **exclusions = NULL; |
1825 | unsigned long exclusion_count = 0; | |
1826 | char *filter_expression = NULL; | |
1827 | ||
1828 | assert(event_node); | |
1829 | assert(handle); | |
1830 | assert(channel_name); | |
1831 | ||
91744e14 FD |
1832 | event = lttng_event_create(); |
1833 | if (!event) { | |
1834 | ret = -LTTNG_ERR_NOMEM; | |
1835 | goto end; | |
1836 | } | |
dcf266c0 | 1837 | |
f40eba3d JG |
1838 | /* Initialize default log level which varies by domain */ |
1839 | switch (handle->domain.type) | |
1840 | { | |
1841 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1842 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1843 | break; |
1844 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1845 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1846 | break; |
1847 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1848 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1849 | break; |
1850 | case LTTNG_DOMAIN_UST: | |
1851 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1852 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1853 | break; |
1854 | default: | |
1855 | assert(0); | |
1856 | } | |
1857 | ||
dcf266c0 JG |
1858 | for (node = xmlFirstElementChild(event_node); node; |
1859 | node = xmlNextElementSibling(node)) { | |
1860 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1861 | xmlChar *content; | |
dcf266c0 JG |
1862 | |
1863 | /* name */ | |
1864 | content = xmlNodeGetContent(node); | |
1865 | if (!content) { | |
1866 | ret = -LTTNG_ERR_NOMEM; | |
1867 | goto end; | |
1868 | } | |
1869 | ||
91744e14 | 1870 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1871 | (const char *) content, |
1872 | LTTNG_SYMBOL_NAME_LEN); | |
1873 | if (ret == -1) { | |
1874 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1875 | (const char *) content, | |
1876 | strlen((const char *) content), | |
1877 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1878 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1879 | free(content); | |
1880 | goto end; | |
1881 | } | |
dcf266c0 JG |
1882 | free(content); |
1883 | } else if (!strcmp((const char *) node->name, | |
1884 | config_element_enabled)) { | |
1885 | xmlChar *content = xmlNodeGetContent(node); | |
1886 | ||
1887 | /* enabled */ | |
1888 | if (!content) { | |
1889 | ret = -LTTNG_ERR_NOMEM; | |
1890 | goto end; | |
1891 | } | |
1892 | ||
91744e14 | 1893 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1894 | free(content); |
1895 | if (ret) { | |
1896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1897 | goto end; | |
1898 | } | |
1899 | } else if (!strcmp((const char *) node->name, | |
1900 | config_element_type)) { | |
1901 | xmlChar *content = xmlNodeGetContent(node); | |
1902 | ||
1903 | /* type */ | |
1904 | if (!content) { | |
1905 | ret = -LTTNG_ERR_NOMEM; | |
1906 | goto end; | |
1907 | } | |
1908 | ||
1909 | ret = get_event_type(content); | |
1910 | free(content); | |
1911 | if (ret < 0) { | |
1912 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1913 | goto end; | |
1914 | } | |
1915 | ||
91744e14 | 1916 | event->type = ret; |
dcf266c0 JG |
1917 | } else if (!strcmp((const char *) node->name, |
1918 | config_element_loglevel_type)) { | |
1919 | xmlChar *content = xmlNodeGetContent(node); | |
1920 | ||
1921 | /* loglevel_type */ | |
1922 | if (!content) { | |
1923 | ret = -LTTNG_ERR_NOMEM; | |
1924 | goto end; | |
1925 | } | |
1926 | ||
1927 | ret = get_loglevel_type(content); | |
1928 | free(content); | |
1929 | if (ret < 0) { | |
1930 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1931 | goto end; | |
1932 | } | |
1933 | ||
91744e14 | 1934 | event->loglevel_type = ret; |
dcf266c0 JG |
1935 | } else if (!strcmp((const char *) node->name, |
1936 | config_element_loglevel)) { | |
1937 | xmlChar *content; | |
1938 | int64_t loglevel = 0; | |
1939 | ||
1940 | /* loglevel */ | |
1941 | content = xmlNodeGetContent(node); | |
1942 | if (!content) { | |
1943 | ret = -LTTNG_ERR_NOMEM; | |
1944 | goto end; | |
1945 | } | |
1946 | ||
1947 | ret = parse_int(content, &loglevel); | |
1948 | free(content); | |
1949 | if (ret) { | |
1950 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1951 | goto end; | |
1952 | } | |
1953 | ||
1954 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1955 | WARN("loglevel out of range."); | |
1956 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1957 | goto end; | |
1958 | } | |
1959 | ||
91744e14 | 1960 | event->loglevel = loglevel; |
dcf266c0 JG |
1961 | } else if (!strcmp((const char *) node->name, |
1962 | config_element_filter)) { | |
1963 | xmlChar *content = | |
1964 | xmlNodeGetContent(node); | |
1965 | ||
1966 | /* filter */ | |
1967 | if (!content) { | |
1968 | ret = -LTTNG_ERR_NOMEM; | |
1969 | goto end; | |
1970 | } | |
1971 | ||
02d8ac3d | 1972 | free(filter_expression); |
dcf266c0 JG |
1973 | filter_expression = strdup((char *) content); |
1974 | free(content); | |
1975 | if (!filter_expression) { | |
1976 | ret = -LTTNG_ERR_NOMEM; | |
1977 | goto end; | |
1978 | } | |
1979 | } else if (!strcmp((const char *) node->name, | |
1980 | config_element_exclusions)) { | |
1981 | xmlNodePtr exclusion_node; | |
1982 | int exclusion_index = 0; | |
1983 | ||
1984 | /* exclusions */ | |
1985 | if (exclusions) { | |
1986 | /* | |
1987 | * Exclusions has already been initialized, | |
1988 | * invalid file. | |
1989 | */ | |
1990 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1991 | goto end; | |
1992 | } | |
1993 | ||
1994 | exclusion_count = xmlChildElementCount(node); | |
1995 | if (!exclusion_count) { | |
1996 | continue; | |
1997 | } | |
1998 | ||
1999 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
2000 | if (!exclusions) { | |
2001 | exclusion_count = 0; | |
2002 | ret = -LTTNG_ERR_NOMEM; | |
2003 | goto end; | |
2004 | } | |
2005 | ||
2006 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2007 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2008 | xmlChar *content = | |
2009 | xmlNodeGetContent(exclusion_node); | |
2010 | ||
2011 | if (!content) { | |
2012 | ret = -LTTNG_ERR_NOMEM; | |
2013 | goto end; | |
2014 | } | |
2015 | ||
2016 | exclusions[exclusion_index] = strdup((const char *) content); | |
2017 | free(content); | |
2018 | if (!exclusions[exclusion_index]) { | |
2019 | ret = -LTTNG_ERR_NOMEM; | |
2020 | goto end; | |
2021 | } | |
2022 | exclusion_index++; | |
2023 | } | |
2024 | ||
91744e14 | 2025 | event->exclusion = 1; |
dcf266c0 JG |
2026 | } else if (!strcmp((const char *) node->name, |
2027 | config_element_attributes)) { | |
2028 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2029 | ||
2030 | /* attributes */ | |
2031 | if (!attribute_node) { | |
2032 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2033 | goto end; | |
2034 | } | |
2035 | ||
c1e83fb4 | 2036 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2037 | config_element_probe_attributes)) { |
2038 | xmlNodePtr probe_attribute_node; | |
2039 | ||
2040 | /* probe_attributes */ | |
2041 | for (probe_attribute_node = | |
2042 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2043 | probe_attribute_node = xmlNextElementSibling( | |
2044 | probe_attribute_node)) { | |
2045 | ||
2046 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2047 | &event->attr.probe); |
dcf266c0 JG |
2048 | if (ret) { |
2049 | goto end; | |
2050 | } | |
2051 | } | |
c1e83fb4 FD |
2052 | } else if (!strcmp((const char *) attribute_node->name, |
2053 | config_element_function_attributes)) { | |
dcf266c0 JG |
2054 | size_t sym_len; |
2055 | xmlChar *content; | |
2056 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2057 | ||
2058 | /* function_attributes */ | |
2059 | content = xmlNodeGetContent(symbol_node); | |
2060 | if (!content) { | |
2061 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2062 | goto end; | |
2063 | } | |
2064 | ||
2065 | sym_len = strlen((char *) content); | |
2066 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2067 | WARN("Function name too long."); | |
2068 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2069 | free(content); | |
2070 | goto end; | |
2071 | } | |
2072 | ||
d2e67842 | 2073 | ret = lttng_strncpy( |
91744e14 | 2074 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2075 | (char *) content, sym_len); |
2076 | if (ret == -1) { | |
2077 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2078 | free(content); | |
2079 | goto end; | |
2080 | } | |
dcf266c0 | 2081 | free(content); |
c1e83fb4 FD |
2082 | } else if (!strcmp((const char *) attribute_node->name, |
2083 | config_element_userspace_probe_tracepoint_attributes)) { | |
2084 | struct lttng_userspace_probe_location *location; | |
2085 | ||
2086 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2087 | if (!location) { | |
2088 | WARN("Error processing userspace probe tracepoint attribute"); | |
2089 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2090 | goto end; | |
2091 | } | |
2092 | ret = lttng_event_set_userspace_probe_location( | |
2093 | event, location); | |
2094 | if (ret) { | |
2095 | WARN("Error setting userspace probe location field"); | |
2096 | lttng_userspace_probe_location_destroy( | |
2097 | location); | |
2098 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2099 | goto end; | |
2100 | } | |
2101 | } else if (!strcmp((const char *) attribute_node->name, | |
2102 | config_element_userspace_probe_function_attributes)) { | |
2103 | struct lttng_userspace_probe_location *location; | |
2104 | ||
2105 | location = | |
2106 | process_userspace_probe_function_attribute_node( | |
2107 | attribute_node); | |
2108 | if (!location) { | |
2109 | WARN("Error processing userspace probe function attribute"); | |
2110 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2111 | goto end; | |
2112 | } | |
2113 | ||
2114 | ret = lttng_event_set_userspace_probe_location( | |
2115 | event, location); | |
2116 | if (ret) { | |
2117 | WARN("Error setting userspace probe location field"); | |
2118 | lttng_userspace_probe_location_destroy( | |
2119 | location); | |
2120 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2121 | goto end; | |
2122 | } | |
2123 | } else { | |
2124 | /* Unknown event attribute. */ | |
2125 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2126 | goto end; | |
dcf266c0 JG |
2127 | } |
2128 | } | |
2129 | } | |
2130 | ||
91744e14 FD |
2131 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2132 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2133 | filter_expression, exclusion_count, exclusions); |
2134 | if (ret < 0) { | |
91744e14 | 2135 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2136 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2137 | goto end; | |
2138 | } | |
065321e9 | 2139 | } |
d2e67842 | 2140 | ret = 0; |
dcf266c0 JG |
2141 | end: |
2142 | for (i = 0; i < exclusion_count; i++) { | |
2143 | free(exclusions[i]); | |
2144 | } | |
2145 | ||
b33f872b | 2146 | lttng_event_destroy(event); |
dcf266c0 JG |
2147 | free(exclusions); |
2148 | free(filter_expression); | |
2149 | return ret; | |
2150 | } | |
2151 | ||
2152 | static | |
2153 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2154 | const char *channel_name) | |
2155 | { | |
2156 | int ret = 0; | |
d7b645e2 | 2157 | struct lttng_event event; |
dcf266c0 JG |
2158 | xmlNodePtr node; |
2159 | ||
2160 | assert(events_node); | |
2161 | assert(handle); | |
2162 | assert(channel_name); | |
2163 | ||
2164 | for (node = xmlFirstElementChild(events_node); node; | |
2165 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2166 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2167 | if (ret) { |
2168 | goto end; | |
2169 | } | |
2170 | } | |
d7b645e2 JR |
2171 | |
2172 | /* | |
2173 | * Disable all events to enable only the necessary events. | |
2174 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2175 | * force this approach. | |
2176 | */ | |
2177 | memset(&event, 0, sizeof(event)); | |
2178 | event.loglevel = -1; | |
2179 | event.type = LTTNG_EVENT_ALL; | |
2180 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2181 | if (ret) { | |
2182 | goto end; | |
2183 | } | |
2184 | ||
2185 | for (node = xmlFirstElementChild(events_node); node; | |
2186 | node = xmlNextElementSibling(node)) { | |
2187 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2188 | if (ret) { | |
2189 | goto end; | |
2190 | } | |
2191 | } | |
2192 | ||
dcf266c0 JG |
2193 | end: |
2194 | return ret; | |
2195 | } | |
2196 | ||
2197 | static | |
2198 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2199 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2200 | xmlNodePtr *events_node) | |
2201 | { | |
2202 | int ret; | |
2203 | ||
2204 | assert(attr_node); | |
2205 | assert(channel); | |
2206 | assert(contexts_node); | |
2207 | assert(events_node); | |
2208 | ||
2209 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2210 | xmlChar *content; | |
dcf266c0 JG |
2211 | |
2212 | /* name */ | |
2213 | content = xmlNodeGetContent(attr_node); | |
2214 | if (!content) { | |
2215 | ret = -LTTNG_ERR_NOMEM; | |
2216 | goto end; | |
2217 | } | |
2218 | ||
d2e67842 JG |
2219 | ret = lttng_strncpy(channel->name, |
2220 | (const char *) content, | |
2221 | LTTNG_SYMBOL_NAME_LEN); | |
2222 | if (ret == -1) { | |
2223 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2224 | (const char *) content, | |
2225 | strlen((const char *) content), | |
2226 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2227 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2228 | free(content); | |
2229 | goto end; | |
2230 | } | |
dcf266c0 JG |
2231 | free(content); |
2232 | } else if (!strcmp((const char *) attr_node->name, | |
2233 | config_element_enabled)) { | |
2234 | xmlChar *content; | |
2235 | int enabled; | |
2236 | ||
2237 | /* enabled */ | |
2238 | content = xmlNodeGetContent(attr_node); | |
2239 | if (!content) { | |
2240 | ret = -LTTNG_ERR_NOMEM; | |
2241 | goto end; | |
2242 | } | |
2243 | ||
2244 | ret = parse_bool(content, &enabled); | |
2245 | free(content); | |
2246 | if (ret) { | |
2247 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2248 | goto end; | |
2249 | } | |
2250 | ||
2251 | channel->enabled = enabled; | |
2252 | } else if (!strcmp((const char *) attr_node->name, | |
2253 | config_element_overwrite_mode)) { | |
2254 | xmlChar *content; | |
2255 | ||
2256 | /* overwrite_mode */ | |
2257 | content = xmlNodeGetContent(attr_node); | |
2258 | if (!content) { | |
2259 | ret = -LTTNG_ERR_NOMEM; | |
2260 | goto end; | |
2261 | } | |
2262 | ||
2263 | ret = get_overwrite_mode(content); | |
2264 | free(content); | |
2265 | if (ret < 0) { | |
2266 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2267 | goto end; | |
2268 | } | |
2269 | ||
2270 | channel->attr.overwrite = ret; | |
2271 | } else if (!strcmp((const char *) attr_node->name, | |
2272 | config_element_subbuf_size)) { | |
2273 | xmlChar *content; | |
2274 | ||
2275 | /* subbuffer_size */ | |
2276 | content = xmlNodeGetContent(attr_node); | |
2277 | if (!content) { | |
2278 | ret = -LTTNG_ERR_NOMEM; | |
2279 | goto end; | |
2280 | } | |
2281 | ||
2282 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2283 | free(content); | |
2284 | if (ret) { | |
2285 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2286 | goto end; | |
2287 | } | |
2288 | } else if (!strcmp((const char *) attr_node->name, | |
2289 | config_element_num_subbuf)) { | |
2290 | xmlChar *content; | |
2291 | ||
2292 | /* subbuffer_count */ | |
2293 | content = xmlNodeGetContent(attr_node); | |
2294 | if (!content) { | |
2295 | ret = -LTTNG_ERR_NOMEM; | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2300 | free(content); | |
2301 | if (ret) { | |
2302 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2303 | goto end; | |
2304 | } | |
2305 | } else if (!strcmp((const char *) attr_node->name, | |
2306 | config_element_switch_timer_interval)) { | |
2307 | xmlChar *content; | |
2308 | uint64_t switch_timer_interval = 0; | |
2309 | ||
2310 | /* switch_timer_interval */ | |
2311 | content = xmlNodeGetContent(attr_node); | |
2312 | if (!content) { | |
2313 | ret = -LTTNG_ERR_NOMEM; | |
2314 | goto end; | |
2315 | } | |
2316 | ||
2317 | ret = parse_uint(content, &switch_timer_interval); | |
2318 | free(content); | |
2319 | if (ret) { | |
2320 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2321 | goto end; | |
2322 | } | |
2323 | ||
2324 | if (switch_timer_interval > UINT_MAX) { | |
2325 | WARN("switch_timer_interval out of range."); | |
2326 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2327 | goto end; | |
2328 | } | |
2329 | ||
2330 | channel->attr.switch_timer_interval = | |
2331 | switch_timer_interval; | |
2332 | } else if (!strcmp((const char *) attr_node->name, | |
2333 | config_element_read_timer_interval)) { | |
2334 | xmlChar *content; | |
2335 | uint64_t read_timer_interval = 0; | |
2336 | ||
2337 | /* read_timer_interval */ | |
2338 | content = xmlNodeGetContent(attr_node); | |
2339 | if (!content) { | |
2340 | ret = -LTTNG_ERR_NOMEM; | |
2341 | goto end; | |
2342 | } | |
2343 | ||
2344 | ret = parse_uint(content, &read_timer_interval); | |
2345 | free(content); | |
2346 | if (ret) { | |
2347 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2348 | goto end; | |
2349 | } | |
2350 | ||
2351 | if (read_timer_interval > UINT_MAX) { | |
2352 | WARN("read_timer_interval out of range."); | |
2353 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2354 | goto end; | |
2355 | } | |
2356 | ||
2357 | channel->attr.read_timer_interval = | |
2358 | read_timer_interval; | |
2359 | } else if (!strcmp((const char *) attr_node->name, | |
2360 | config_element_output_type)) { | |
2361 | xmlChar *content; | |
2362 | ||
2363 | /* output_type */ | |
2364 | content = xmlNodeGetContent(attr_node); | |
2365 | if (!content) { | |
2366 | ret = -LTTNG_ERR_NOMEM; | |
2367 | goto end; | |
2368 | } | |
2369 | ||
2370 | ret = get_output_type(content); | |
2371 | free(content); | |
2372 | if (ret < 0) { | |
2373 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2374 | goto end; | |
2375 | } | |
2376 | ||
2377 | channel->attr.output = ret; | |
2378 | } else if (!strcmp((const char *) attr_node->name, | |
2379 | config_element_tracefile_size)) { | |
2380 | xmlChar *content; | |
2381 | ||
2382 | /* tracefile_size */ | |
2383 | content = xmlNodeGetContent(attr_node); | |
2384 | if (!content) { | |
2385 | ret = -LTTNG_ERR_NOMEM; | |
2386 | goto end; | |
2387 | } | |
2388 | ||
2389 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2390 | free(content); | |
2391 | if (ret) { | |
2392 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2393 | goto end; | |
2394 | } | |
2395 | } else if (!strcmp((const char *) attr_node->name, | |
2396 | config_element_tracefile_count)) { | |
2397 | xmlChar *content; | |
2398 | ||
2399 | /* tracefile_count */ | |
2400 | content = xmlNodeGetContent(attr_node); | |
2401 | if (!content) { | |
2402 | ret = -LTTNG_ERR_NOMEM; | |
2403 | goto end; | |
2404 | } | |
2405 | ||
2406 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2407 | free(content); | |
2408 | if (ret) { | |
2409 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2410 | goto end; | |
2411 | } | |
2412 | } else if (!strcmp((const char *) attr_node->name, | |
2413 | config_element_live_timer_interval)) { | |
2414 | xmlChar *content; | |
2415 | uint64_t live_timer_interval = 0; | |
2416 | ||
2417 | /* live_timer_interval */ | |
2418 | content = xmlNodeGetContent(attr_node); | |
2419 | if (!content) { | |
2420 | ret = -LTTNG_ERR_NOMEM; | |
2421 | goto end; | |
2422 | } | |
2423 | ||
2424 | ret = parse_uint(content, &live_timer_interval); | |
2425 | free(content); | |
2426 | if (ret) { | |
2427 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2428 | goto end; | |
2429 | } | |
2430 | ||
2431 | if (live_timer_interval > UINT_MAX) { | |
2432 | WARN("live_timer_interval out of range."); | |
2433 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2434 | goto end; | |
2435 | } | |
2436 | ||
2437 | channel->attr.live_timer_interval = | |
2438 | live_timer_interval; | |
4fc2b126 JR |
2439 | } else if (!strcmp((const char *) attr_node->name, |
2440 | config_element_monitor_timer_interval)) { | |
2441 | xmlChar *content; | |
2442 | uint64_t monitor_timer_interval = 0; | |
2443 | ||
2444 | /* monitor_timer_interval */ | |
2445 | content = xmlNodeGetContent(attr_node); | |
2446 | if (!content) { | |
2447 | ret = -LTTNG_ERR_NOMEM; | |
2448 | goto end; | |
2449 | } | |
2450 | ||
2451 | ret = parse_uint(content, &monitor_timer_interval); | |
2452 | free(content); | |
2453 | if (ret) { | |
2454 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2455 | goto end; | |
2456 | } | |
2457 | ||
2458 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2459 | monitor_timer_interval); | |
2460 | if (ret) { | |
2461 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2462 | goto end; | |
2463 | } | |
275472aa JR |
2464 | } else if (!strcmp((const char *) attr_node->name, |
2465 | config_element_blocking_timeout)) { | |
2466 | xmlChar *content; | |
2467 | int64_t blocking_timeout = 0; | |
2468 | ||
2469 | /* blocking_timeout */ | |
2470 | content = xmlNodeGetContent(attr_node); | |
2471 | if (!content) { | |
2472 | ret = -LTTNG_ERR_NOMEM; | |
2473 | goto end; | |
2474 | } | |
2475 | ||
2476 | ret = parse_int(content, &blocking_timeout); | |
2477 | free(content); | |
2478 | if (ret) { | |
2479 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2480 | goto end; | |
2481 | } | |
2482 | ||
2483 | ret = lttng_channel_set_blocking_timeout(channel, | |
2484 | blocking_timeout); | |
2485 | if (ret) { | |
2486 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2487 | goto end; | |
2488 | } | |
dcf266c0 JG |
2489 | } else if (!strcmp((const char *) attr_node->name, |
2490 | config_element_events)) { | |
2491 | /* events */ | |
2492 | *events_node = attr_node; | |
2493 | } else { | |
2494 | /* contexts */ | |
2495 | *contexts_node = attr_node; | |
2496 | } | |
2497 | ret = 0; | |
2498 | end: | |
2499 | return ret; | |
2500 | } | |
2501 | ||
2502 | static | |
2503 | int process_context_node(xmlNodePtr context_node, | |
2504 | struct lttng_handle *handle, const char *channel_name) | |
2505 | { | |
2506 | int ret; | |
2507 | struct lttng_event_context context; | |
2508 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2509 | ||
2510 | assert(handle); | |
2511 | assert(channel_name); | |
2512 | ||
2513 | if (!context_child_node) { | |
2514 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2515 | goto end; | |
2516 | } | |
2517 | ||
2518 | memset(&context, 0, sizeof(context)); | |
2519 | ||
2520 | if (!strcmp((const char *) context_child_node->name, | |
2521 | config_element_type)) { | |
2522 | /* type */ | |
2523 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2524 | |
dcf266c0 JG |
2525 | if (!content) { |
2526 | ret = -LTTNG_ERR_NOMEM; | |
2527 | goto end; | |
2528 | } | |
2529 | ||
2530 | ret = get_context_type(content); | |
2531 | free(content); | |
2532 | if (ret < 0) { | |
2533 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2534 | goto end; | |
2535 | } | |
2536 | ||
2537 | context.ctx = ret; | |
045fc617 JG |
2538 | } else if (!strcmp((const char *) context_child_node->name, |
2539 | config_element_context_perf)) { | |
2540 | /* perf */ | |
dcf266c0 JG |
2541 | xmlNodePtr perf_attr_node; |
2542 | ||
14ce5bd8 JG |
2543 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2544 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2545 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2546 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2547 | perf_attr_node; perf_attr_node = | |
2548 | xmlNextElementSibling(perf_attr_node)) { | |
2549 | if (!strcmp((const char *) perf_attr_node->name, | |
2550 | config_element_type)) { | |
2551 | xmlChar *content; | |
2552 | uint64_t type = 0; | |
2553 | ||
2554 | /* type */ | |
2555 | content = xmlNodeGetContent(perf_attr_node); | |
2556 | if (!content) { | |
2557 | ret = -LTTNG_ERR_NOMEM; | |
2558 | goto end; | |
2559 | } | |
2560 | ||
2561 | ret = parse_uint(content, &type); | |
2562 | free(content); | |
2563 | if (ret) { | |
2564 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2565 | goto end; | |
2566 | } | |
2567 | ||
2568 | if (type > UINT32_MAX) { | |
2569 | WARN("perf context type out of range."); | |
2570 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2571 | goto end; | |
2572 | } | |
2573 | ||
2574 | context.u.perf_counter.type = type; | |
2575 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2576 | config_element_config)) { | |
2577 | xmlChar *content; | |
2578 | uint64_t config = 0; | |
2579 | ||
2580 | /* config */ | |
2581 | content = xmlNodeGetContent(perf_attr_node); | |
2582 | if (!content) { | |
2583 | ret = -LTTNG_ERR_NOMEM; | |
2584 | goto end; | |
2585 | } | |
2586 | ||
2587 | ret = parse_uint(content, &config); | |
2588 | free(content); | |
2589 | if (ret) { | |
2590 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2591 | goto end; | |
2592 | } | |
2593 | ||
2594 | context.u.perf_counter.config = config; | |
2595 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2596 | config_element_name)) { | |
2597 | xmlChar *content; | |
dcf266c0 JG |
2598 | |
2599 | /* name */ | |
2600 | content = xmlNodeGetContent(perf_attr_node); | |
2601 | if (!content) { | |
2602 | ret = -LTTNG_ERR_NOMEM; | |
2603 | goto end; | |
2604 | } | |
2605 | ||
d2e67842 JG |
2606 | ret = lttng_strncpy(context.u.perf_counter.name, |
2607 | (const char *) content, | |
2608 | LTTNG_SYMBOL_NAME_LEN); | |
2609 | if (ret == -1) { | |
2610 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2611 | (const char *) content, | |
2612 | strlen((const char *) content), | |
2613 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2614 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2615 | free(content); | |
2616 | goto end; | |
2617 | } | |
dcf266c0 JG |
2618 | free(content); |
2619 | } | |
2620 | } | |
045fc617 JG |
2621 | } else if (!strcmp((const char *) context_child_node->name, |
2622 | config_element_context_app)) { | |
2623 | /* application context */ | |
2624 | xmlNodePtr app_ctx_node; | |
2625 | ||
2626 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2627 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2628 | app_ctx_node; app_ctx_node = | |
2629 | xmlNextElementSibling(app_ctx_node)) { | |
2630 | xmlChar *content; | |
2631 | char **target = strcmp( | |
2632 | (const char *) app_ctx_node->name, | |
2633 | config_element_context_app_provider_name) == 0 ? | |
2634 | &context.u.app_ctx.provider_name : | |
2635 | &context.u.app_ctx.ctx_name; | |
2636 | ||
2637 | content = xmlNodeGetContent(app_ctx_node); | |
2638 | if (!content) { | |
2639 | ret = -LTTNG_ERR_NOMEM; | |
2640 | goto end; | |
2641 | } | |
2642 | ||
2643 | *target = (char *) content; | |
2644 | } | |
2645 | } else { | |
2646 | /* Unrecognized context type */ | |
2647 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2648 | goto end; | |
dcf266c0 JG |
2649 | } |
2650 | ||
2651 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2652 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2653 | free(context.u.app_ctx.provider_name); | |
2654 | free(context.u.app_ctx.ctx_name); | |
2655 | } | |
dcf266c0 JG |
2656 | end: |
2657 | return ret; | |
2658 | } | |
2659 | ||
2660 | static | |
2661 | int process_contexts_node(xmlNodePtr contexts_node, | |
2662 | struct lttng_handle *handle, const char *channel_name) | |
2663 | { | |
2664 | int ret = 0; | |
2665 | xmlNodePtr context_node; | |
2666 | ||
2667 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2668 | context_node = xmlNextElementSibling(context_node)) { | |
2669 | ret = process_context_node(context_node, handle, channel_name); | |
2670 | if (ret) { | |
2671 | goto end; | |
2672 | } | |
2673 | } | |
2674 | end: | |
2675 | return ret; | |
2676 | } | |
2677 | ||
55c9e7ca JR |
2678 | static int get_tracker_elements(enum lttng_tracker_type tracker_type, |
2679 | const char **element_id_tracker, | |
2680 | const char **element_target_id, | |
2681 | const char **element_id, | |
2682 | const char **element_id_alias, | |
2683 | const char **element_name) | |
2684 | { | |
2685 | int ret = 0; | |
2686 | ||
2687 | switch (tracker_type) { | |
2688 | case LTTNG_TRACKER_PID: | |
2689 | *element_id_tracker = config_element_pid_tracker; | |
2690 | *element_target_id = config_element_target_pid; | |
2691 | *element_id = config_element_id; | |
2692 | *element_id_alias = config_element_pid; | |
2693 | *element_name = NULL; | |
2694 | break; | |
2695 | case LTTNG_TRACKER_VPID: | |
2696 | *element_id_tracker = config_element_vpid_tracker; | |
2697 | *element_target_id = config_element_target_vpid; | |
2698 | *element_id = config_element_id; | |
2699 | *element_id_alias = NULL; | |
2700 | *element_name = NULL; | |
2701 | break; | |
2702 | case LTTNG_TRACKER_UID: | |
2703 | *element_id_tracker = config_element_uid_tracker; | |
2704 | *element_target_id = config_element_target_uid; | |
2705 | *element_id = config_element_id; | |
2706 | *element_id_alias = NULL; | |
2707 | *element_name = config_element_name; | |
2708 | break; | |
2709 | case LTTNG_TRACKER_VUID: | |
2710 | *element_id_tracker = config_element_vuid_tracker; | |
2711 | *element_target_id = config_element_target_vuid; | |
2712 | *element_id = config_element_id; | |
2713 | *element_id_alias = NULL; | |
2714 | *element_name = config_element_name; | |
2715 | break; | |
2716 | case LTTNG_TRACKER_GID: | |
2717 | *element_id_tracker = config_element_gid_tracker; | |
2718 | *element_target_id = config_element_target_gid; | |
2719 | *element_id = config_element_id; | |
2720 | *element_id_alias = NULL; | |
2721 | *element_name = config_element_name; | |
2722 | break; | |
2723 | case LTTNG_TRACKER_VGID: | |
2724 | *element_id_tracker = config_element_vgid_tracker; | |
2725 | *element_target_id = config_element_target_vgid; | |
2726 | *element_id = config_element_id; | |
2727 | *element_id_alias = NULL; | |
2728 | *element_name = config_element_name; | |
2729 | break; | |
2730 | default: | |
2731 | ret = LTTNG_ERR_INVALID; | |
2732 | } | |
2733 | return ret; | |
2734 | } | |
2735 | ||
2736 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, | |
2737 | struct lttng_handle *handle, | |
2738 | enum lttng_tracker_type tracker_type) | |
847a5916 | 2739 | { |
dd49e13f | 2740 | int ret = 0, child; |
847a5916 JR |
2741 | xmlNodePtr targets_node = NULL; |
2742 | xmlNodePtr node; | |
55c9e7ca JR |
2743 | const char *element_id_tracker; |
2744 | const char *element_target_id; | |
2745 | const char *element_id; | |
2746 | const char *element_id_alias; | |
2747 | const char *element_name; | |
2d97a006 | 2748 | enum lttng_tracker_id_status status; |
847a5916 JR |
2749 | |
2750 | assert(handle); | |
55c9e7ca JR |
2751 | assert(id_tracker_node); |
2752 | ||
2753 | ret = get_tracker_elements(tracker_type, &element_id_tracker, | |
2754 | &element_target_id, &element_id, &element_id_alias, | |
2755 | &element_name); | |
2756 | if (ret) { | |
2757 | return ret; | |
2758 | } | |
2759 | ||
847a5916 | 2760 | /* get the targets node */ |
55c9e7ca JR |
2761 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2762 | node = xmlNextElementSibling(node)) { | |
847a5916 JR |
2763 | if (!strcmp((const char *) node->name, |
2764 | config_element_targets)) { | |
2765 | targets_node = node; | |
2766 | break; | |
2767 | } | |
2768 | } | |
2769 | ||
2770 | if (!targets_node) { | |
2771 | ret = LTTNG_ERR_INVALID; | |
2772 | goto end; | |
2773 | } | |
2774 | ||
55c9e7ca | 2775 | /* Go through all id target node */ |
847a5916 JR |
2776 | child = xmlChildElementCount(targets_node); |
2777 | if (child == 0) { | |
2d97a006 JR |
2778 | struct lttng_tracker_id *tracker_id = NULL; |
2779 | tracker_id = lttng_tracker_id_create(); | |
2780 | if (tracker_id == NULL) { | |
2781 | ret = LTTNG_ERR_NOMEM; | |
2782 | goto end; | |
2783 | } | |
2784 | status = lttng_tracker_id_set_all(tracker_id); | |
2785 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2786 | ret = LTTNG_ERR_INVALID; | |
2787 | goto end; | |
2788 | } | |
55c9e7ca | 2789 | |
847a5916 | 2790 | /* The session is explicitly set to target nothing. */ |
2d97a006 JR |
2791 | ret = lttng_untrack_id(handle, tracker_type, tracker_id); |
2792 | lttng_tracker_id_destroy(tracker_id); | |
847a5916 JR |
2793 | if (ret) { |
2794 | goto end; | |
2795 | } | |
2796 | } | |
2797 | for (node = xmlFirstElementChild(targets_node); node; | |
2798 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 2799 | xmlNodePtr id_target_node = node; |
847a5916 | 2800 | |
55c9e7ca JR |
2801 | /* get id node and track it */ |
2802 | for (node = xmlFirstElementChild(id_target_node); node; | |
2803 | node = xmlNextElementSibling(node)) { | |
2804 | if (!strcmp((const char *) node->name, element_id) || | |
2805 | (element_id_alias && | |
2806 | !strcmp((const char *) node->name, | |
2807 | element_id_alias))) { | |
2808 | int64_t id; | |
847a5916 | 2809 | xmlChar *content = NULL; |
2d97a006 | 2810 | struct lttng_tracker_id *tracker_id = NULL; |
847a5916 JR |
2811 | |
2812 | content = xmlNodeGetContent(node); | |
2813 | if (!content) { | |
2814 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2815 | goto end; | |
2816 | } | |
2817 | ||
55c9e7ca | 2818 | ret = parse_int(content, &id); |
847a5916 JR |
2819 | free(content); |
2820 | if (ret) { | |
2821 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2822 | goto end; | |
2823 | } | |
2824 | ||
2d97a006 JR |
2825 | tracker_id = lttng_tracker_id_create(); |
2826 | if (tracker_id == NULL) { | |
2827 | ret = LTTNG_ERR_NOMEM; | |
2828 | goto end; | |
2829 | } | |
2830 | ||
2831 | status = lttng_tracker_id_set_value( | |
2832 | tracker_id, id); | |
2833 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2834 | lttng_tracker_id_destroy(tracker_id); | |
2835 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2836 | goto end; | |
2837 | } | |
2838 | ||
55c9e7ca | 2839 | ret = lttng_track_id(handle, tracker_type, |
2d97a006 JR |
2840 | tracker_id); |
2841 | lttng_tracker_id_destroy(tracker_id); | |
55c9e7ca JR |
2842 | if (ret) { |
2843 | goto end; | |
2844 | } | |
2845 | } | |
2846 | if (element_name && !strcmp((const char *) node->name, | |
2847 | element_name)) { | |
2848 | xmlChar *content = NULL; | |
2d97a006 | 2849 | struct lttng_tracker_id *tracker_id = NULL; |
55c9e7ca JR |
2850 | |
2851 | content = xmlNodeGetContent(node); | |
2852 | if (!content) { | |
2853 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2854 | goto end; | |
2855 | } | |
2d97a006 JR |
2856 | |
2857 | tracker_id = lttng_tracker_id_create(); | |
2858 | if (tracker_id == NULL) { | |
2859 | ret = LTTNG_ERR_NOMEM; | |
2860 | goto end; | |
2861 | } | |
2862 | ||
2863 | status = lttng_tracker_id_set_string(tracker_id, | |
2864 | (const char *) content); | |
2865 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2866 | lttng_tracker_id_destroy(tracker_id); | |
2867 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2868 | goto end; | |
2869 | } | |
2870 | ||
55c9e7ca | 2871 | ret = lttng_track_id(handle, tracker_type, |
2d97a006 JR |
2872 | tracker_id); |
2873 | lttng_tracker_id_destroy(tracker_id); | |
55c9e7ca | 2874 | free(content); |
847a5916 JR |
2875 | if (ret) { |
2876 | goto end; | |
2877 | } | |
2878 | } | |
2879 | } | |
55c9e7ca | 2880 | node = id_target_node; |
847a5916 JR |
2881 | } |
2882 | ||
2883 | end: | |
2884 | return ret; | |
2885 | } | |
2886 | ||
dcf266c0 JG |
2887 | static |
2888 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2889 | { | |
2890 | int ret; | |
2891 | struct lttng_domain domain = { 0 }; | |
2892 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2893 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2894 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2895 | xmlNodePtr trackers_node = NULL; |
2896 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2897 | xmlNodePtr vpid_tracker_node = NULL; |
2898 | xmlNodePtr uid_tracker_node = NULL; | |
2899 | xmlNodePtr vuid_tracker_node = NULL; | |
2900 | xmlNodePtr gid_tracker_node = NULL; | |
2901 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2902 | xmlNodePtr node; |
2903 | ||
2904 | assert(session_name); | |
2905 | ||
2906 | ret = init_domain(domain_node, &domain); | |
2907 | if (ret) { | |
2908 | goto end; | |
2909 | } | |
2910 | ||
2911 | handle = lttng_create_handle(session_name, &domain); | |
2912 | if (!handle) { | |
2913 | ret = -LTTNG_ERR_NOMEM; | |
2914 | goto end; | |
2915 | } | |
2916 | ||
2917 | /* get the channels node */ | |
2918 | for (node = xmlFirstElementChild(domain_node); node; | |
2919 | node = xmlNextElementSibling(node)) { | |
2920 | if (!strcmp((const char *) node->name, | |
2921 | config_element_channels)) { | |
2922 | channels_node = node; | |
2923 | break; | |
2924 | } | |
2925 | } | |
2926 | ||
2927 | if (!channels_node) { | |
2928 | goto end; | |
2929 | } | |
2930 | ||
2931 | /* create all channels */ | |
2932 | for (node = xmlFirstElementChild(channels_node); node; | |
2933 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2934 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2935 | xmlNodePtr contexts_node = NULL; |
2936 | xmlNodePtr events_node = NULL; | |
2937 | xmlNodePtr channel_attr_node; | |
2938 | ||
36d1687c JG |
2939 | /* |
2940 | * Channels of the "agent" types cannot be created directly. | |
2941 | * They are meant to be created implicitly through the | |
2942 | * activation of events in their domain. However, a user | |
2943 | * can override the default channel configuration attributes | |
2944 | * by creating the underlying UST channel _before_ enabling | |
2945 | * an agent domain event. | |
2946 | * | |
2947 | * Hence, the channel's type is substituted before the creation | |
2948 | * and restored by the time the events are created. | |
2949 | */ | |
2950 | switch (domain.type) { | |
2951 | case LTTNG_DOMAIN_JUL: | |
2952 | case LTTNG_DOMAIN_LOG4J: | |
2953 | case LTTNG_DOMAIN_PYTHON: | |
2954 | domain.type = LTTNG_DOMAIN_UST; | |
2955 | default: | |
2956 | break; | |
2957 | } | |
2958 | ||
4fc2b126 JR |
2959 | channel = lttng_channel_create(&domain); |
2960 | if (!channel) { | |
2961 | ret = -1; | |
2962 | goto end; | |
2963 | } | |
dcf266c0 JG |
2964 | |
2965 | for (channel_attr_node = xmlFirstElementChild(node); | |
2966 | channel_attr_node; channel_attr_node = | |
2967 | xmlNextElementSibling(channel_attr_node)) { | |
2968 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2969 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2970 | if (ret) { |
2971 | goto end; | |
2972 | } | |
2973 | } | |
2974 | ||
4fc2b126 | 2975 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2976 | if (ret < 0) { |
2977 | goto end; | |
2978 | } | |
2979 | ||
36d1687c JG |
2980 | /* Restore the original channel domain. */ |
2981 | domain.type = original_domain; | |
2982 | ||
4fc2b126 | 2983 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2984 | if (ret) { |
2985 | goto end; | |
2986 | } | |
2987 | ||
2988 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2989 | channel->name); |
dcf266c0 JG |
2990 | if (ret) { |
2991 | goto end; | |
2992 | } | |
4fc2b126 JR |
2993 | |
2994 | lttng_channel_destroy(channel); | |
dcf266c0 | 2995 | } |
4fc2b126 | 2996 | channel = NULL; |
847a5916 JR |
2997 | |
2998 | /* get the trackers node */ | |
2999 | for (node = xmlFirstElementChild(domain_node); node; | |
3000 | node = xmlNextElementSibling(node)) { | |
3001 | if (!strcmp((const char *) node->name, | |
3002 | config_element_trackers)) { | |
3003 | trackers_node = node; | |
3004 | break; | |
3005 | } | |
3006 | } | |
3007 | ||
3008 | if (!trackers_node) { | |
3009 | goto end; | |
3010 | } | |
3011 | ||
3012 | for (node = xmlFirstElementChild(trackers_node); node; | |
3013 | node = xmlNextElementSibling(node)) { | |
55c9e7ca JR |
3014 | if (!strcmp((const char *) node->name, |
3015 | config_element_pid_tracker)) { | |
847a5916 | 3016 | pid_tracker_node = node; |
55c9e7ca JR |
3017 | ret = process_id_tracker_node(pid_tracker_node, handle, |
3018 | LTTNG_TRACKER_PID); | |
3019 | if (ret) { | |
3020 | goto end; | |
3021 | } | |
3022 | } | |
3023 | if (!strcmp((const char *) node->name, | |
3024 | config_element_vpid_tracker)) { | |
3025 | vpid_tracker_node = node; | |
3026 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
3027 | LTTNG_TRACKER_VPID); | |
3028 | if (ret) { | |
3029 | goto end; | |
3030 | } | |
3031 | } | |
3032 | if (!strcmp((const char *) node->name, | |
3033 | config_element_uid_tracker)) { | |
3034 | uid_tracker_node = node; | |
3035 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
3036 | LTTNG_TRACKER_UID); | |
3037 | if (ret) { | |
3038 | goto end; | |
3039 | } | |
3040 | } | |
3041 | if (!strcmp((const char *) node->name, | |
3042 | config_element_vuid_tracker)) { | |
3043 | vuid_tracker_node = node; | |
3044 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
3045 | LTTNG_TRACKER_VUID); | |
3046 | if (ret) { | |
3047 | goto end; | |
3048 | } | |
3049 | } | |
3050 | if (!strcmp((const char *) node->name, | |
3051 | config_element_gid_tracker)) { | |
3052 | gid_tracker_node = node; | |
3053 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
3054 | LTTNG_TRACKER_GID); | |
3055 | if (ret) { | |
3056 | goto end; | |
3057 | } | |
3058 | } | |
3059 | if (!strcmp((const char *) node->name, | |
3060 | config_element_vgid_tracker)) { | |
3061 | vgid_tracker_node = node; | |
3062 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
3063 | LTTNG_TRACKER_VGID); | |
847a5916 JR |
3064 | if (ret) { |
3065 | goto end; | |
3066 | } | |
3067 | } | |
847a5916 JR |
3068 | } |
3069 | ||
dcf266c0 | 3070 | end: |
4fc2b126 | 3071 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3072 | lttng_destroy_handle(handle); |
3073 | return ret; | |
3074 | } | |
3075 | ||
66ea93b1 JG |
3076 | static |
3077 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3078 | { | |
3079 | int ret; | |
3080 | enum lttng_rotation_status status; | |
3081 | struct lttng_rotation_schedule *periodic = | |
3082 | lttng_rotation_schedule_periodic_create(); | |
3083 | ||
3084 | if (!periodic) { | |
3085 | ret = -LTTNG_ERR_NOMEM; | |
3086 | goto error; | |
3087 | } | |
3088 | ||
3089 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3090 | time_us); | |
3091 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3092 | ret = -LTTNG_ERR_INVALID; | |
3093 | goto error; | |
3094 | } | |
3095 | ||
3096 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3097 | switch (status) { | |
3098 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3099 | ret = 0; |
66ea93b1 JG |
3100 | break; |
3101 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3102 | case LTTNG_ROTATION_STATUS_INVALID: | |
3103 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3104 | break; | |
3105 | default: | |
3106 | ret = -LTTNG_ERR_UNK; | |
3107 | break; | |
3108 | } | |
3109 | error: | |
3110 | lttng_rotation_schedule_destroy(periodic); | |
3111 | return ret; | |
3112 | } | |
3113 | ||
3114 | static | |
3115 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3116 | { | |
3117 | int ret; | |
3118 | enum lttng_rotation_status status; | |
3119 | struct lttng_rotation_schedule *size = | |
3120 | lttng_rotation_schedule_size_threshold_create(); | |
3121 | ||
3122 | if (!size) { | |
3123 | ret = -LTTNG_ERR_NOMEM; | |
3124 | goto error; | |
3125 | } | |
3126 | ||
3127 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3128 | size_bytes); | |
3129 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3130 | ret = -LTTNG_ERR_INVALID; | |
3131 | goto error; | |
3132 | } | |
3133 | ||
3134 | status = lttng_session_add_rotation_schedule(name, size); | |
3135 | switch (status) { | |
3136 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3137 | ret = 0; |
66ea93b1 JG |
3138 | break; |
3139 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3140 | case LTTNG_ROTATION_STATUS_INVALID: | |
3141 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3142 | break; | |
3143 | default: | |
3144 | ret = -LTTNG_ERR_UNK; | |
3145 | break; | |
3146 | } | |
3147 | error: | |
3148 | lttng_rotation_schedule_destroy(size); | |
3149 | return ret; | |
3150 | } | |
3151 | ||
ce6176f2 JG |
3152 | static |
3153 | int process_session_rotation_schedules_node( | |
3154 | xmlNodePtr schedules_node, | |
3155 | uint64_t *rotation_timer_interval, | |
3156 | uint64_t *rotation_size) | |
3157 | { | |
3158 | int ret = 0; | |
3159 | xmlNodePtr child; | |
3160 | ||
3161 | for (child = xmlFirstElementChild(schedules_node); | |
3162 | child; | |
3163 | child = xmlNextElementSibling(child)) { | |
3164 | if (!strcmp((const char *) child->name, | |
3165 | config_element_rotation_schedule_periodic)) { | |
3166 | xmlChar *content; | |
3167 | xmlNodePtr time_us_node; | |
3168 | ||
3169 | /* periodic rotation schedule */ | |
3170 | time_us_node = xmlFirstElementChild(child); | |
3171 | if (!time_us_node || | |
3172 | strcmp((const char *) time_us_node->name, | |
3173 | config_element_rotation_schedule_periodic_time_us)) { | |
3174 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3175 | goto end; | |
3176 | } | |
3177 | ||
3178 | /* time_us child */ | |
3179 | content = xmlNodeGetContent(time_us_node); | |
3180 | if (!content) { | |
3181 | ret = -LTTNG_ERR_NOMEM; | |
3182 | goto end; | |
3183 | } | |
3184 | ret = parse_uint(content, rotation_timer_interval); | |
3185 | free(content); | |
3186 | if (ret) { | |
3187 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3188 | goto end; | |
3189 | } | |
3190 | } else if (!strcmp((const char *) child->name, | |
3191 | config_element_rotation_schedule_size_threshold)) { | |
3192 | xmlChar *content; | |
3193 | xmlNodePtr bytes_node; | |
3194 | ||
3195 | /* size_threshold rotation schedule */ | |
3196 | bytes_node = xmlFirstElementChild(child); | |
3197 | if (!bytes_node || | |
3198 | strcmp((const char *) bytes_node->name, | |
3199 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3200 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3201 | goto end; | |
3202 | } | |
3203 | ||
3204 | /* bytes child */ | |
3205 | content = xmlNodeGetContent(bytes_node); | |
3206 | if (!content) { | |
3207 | ret = -LTTNG_ERR_NOMEM; | |
3208 | goto end; | |
3209 | } | |
3210 | ret = parse_uint(content, rotation_size); | |
3211 | free(content); | |
3212 | if (ret) { | |
3213 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3214 | goto end; | |
3215 | } | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | end: | |
3220 | return ret; | |
3221 | } | |
3222 | ||
dcf266c0 JG |
3223 | static |
3224 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3225 | int overwrite, |
3226 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3227 | { |
3228 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3229 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3230 | rotation_timer_interval = 0, |
3231 | rotation_size = 0; | |
d324faf7 | 3232 | xmlChar *name = NULL; |
9e7c9f56 | 3233 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3234 | xmlNodePtr domains_node = NULL; |
3235 | xmlNodePtr output_node = NULL; | |
3236 | xmlNodePtr node; | |
90936dcf | 3237 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3238 | struct lttng_domain *kernel_domain = NULL; |
3239 | struct lttng_domain *ust_domain = NULL; | |
3240 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3241 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3242 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3243 | |
3244 | for (node = xmlFirstElementChild(session_node); node; | |
3245 | node = xmlNextElementSibling(node)) { | |
3246 | if (!name && !strcmp((const char *) node->name, | |
3247 | config_element_name)) { | |
3248 | /* name */ | |
3249 | xmlChar *node_content = xmlNodeGetContent(node); | |
3250 | if (!node_content) { | |
3251 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3252 | goto error; |
dcf266c0 JG |
3253 | } |
3254 | ||
d324faf7 | 3255 | name = node_content; |
dcf266c0 JG |
3256 | } else if (!domains_node && !strcmp((const char *) node->name, |
3257 | config_element_domains)) { | |
3258 | /* domains */ | |
3259 | domains_node = node; | |
3260 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3261 | config_element_started)) { | |
3262 | /* started */ | |
3263 | xmlChar *node_content = xmlNodeGetContent(node); | |
3264 | if (!node_content) { | |
3265 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3266 | goto error; |
dcf266c0 JG |
3267 | } |
3268 | ||
3269 | ret = parse_bool(node_content, &started); | |
3270 | free(node_content); | |
3271 | if (ret) { | |
3272 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3273 | goto error; |
dcf266c0 JG |
3274 | } |
3275 | } else if (!output_node && !strcmp((const char *) node->name, | |
3276 | config_element_output)) { | |
3277 | /* output */ | |
3278 | output_node = node; | |
9e7c9f56 JR |
3279 | } else if (!shm_path && !strcmp((const char *) node->name, |
3280 | config_element_shared_memory_path)) { | |
3281 | /* shared memory path */ | |
3282 | xmlChar *node_content = xmlNodeGetContent(node); | |
3283 | if (!node_content) { | |
3284 | ret = -LTTNG_ERR_NOMEM; | |
3285 | goto error; | |
3286 | } | |
3287 | ||
3288 | shm_path = node_content; | |
dcf266c0 | 3289 | } else { |
259c2674 JD |
3290 | /* |
3291 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3292 | * rotation_timer_interval. |
3293 | */ | |
3294 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3295 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3296 | if (!strcmp((const char *) attributes_child->name, | |
3297 | config_element_snapshot_mode)) { | |
3298 | /* snapshot_mode */ | |
3299 | xmlChar *snapshot_mode_content = | |
3300 | xmlNodeGetContent(attributes_child); | |
3301 | if (!snapshot_mode_content) { | |
3302 | ret = -LTTNG_ERR_NOMEM; | |
3303 | goto error; | |
3304 | } | |
dcf266c0 | 3305 | |
90936dcf JD |
3306 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3307 | free(snapshot_mode_content); | |
3308 | if (ret) { | |
3309 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3310 | goto error; | |
3311 | } | |
3312 | } else if (!strcmp((const char *) attributes_child->name, | |
3313 | config_element_live_timer_interval)) { | |
3314 | /* live_timer_interval */ | |
3315 | xmlChar *timer_interval_content = | |
3316 | xmlNodeGetContent(attributes_child); | |
3317 | if (!timer_interval_content) { | |
3318 | ret = -LTTNG_ERR_NOMEM; | |
3319 | goto error; | |
3320 | } | |
dcf266c0 | 3321 | |
90936dcf JD |
3322 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3323 | free(timer_interval_content); | |
3324 | if (ret) { | |
3325 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3326 | goto error; | |
3327 | } | |
ce6176f2 JG |
3328 | } else if (!strcmp((const char *) attributes_child->name, |
3329 | config_element_rotation_schedules)) { | |
3330 | ret = process_session_rotation_schedules_node( | |
3331 | attributes_child, | |
3332 | &rotation_timer_interval, | |
3333 | &rotation_size); | |
90936dcf JD |
3334 | if (ret) { |
3335 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3336 | goto error; | |
3337 | } | |
259c2674 | 3338 | |
259c2674 JD |
3339 | } |
3340 | } | |
dcf266c0 JG |
3341 | } |
3342 | } | |
3343 | ||
3344 | if (!name) { | |
3345 | /* Mandatory attribute, as defined in the session XSD */ | |
3346 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3347 | goto error; |
dcf266c0 JG |
3348 | } |
3349 | ||
d324faf7 | 3350 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3351 | /* This is not the session we are looking for */ |
c2da8cde DG |
3352 | ret = -LTTNG_ERR_NO_SESSION; |
3353 | goto error; | |
dcf266c0 JG |
3354 | } |
3355 | ||
3356 | /* Init domains to create the session handles */ | |
3357 | for (node = xmlFirstElementChild(domains_node); node; | |
3358 | node = xmlNextElementSibling(node)) { | |
3359 | struct lttng_domain *domain; | |
3360 | ||
3361 | domain = zmalloc(sizeof(*domain)); | |
3362 | if (!domain) { | |
3363 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3364 | goto error; |
dcf266c0 JG |
3365 | } |
3366 | ||
3367 | ret = init_domain(node, domain); | |
3368 | if (ret) { | |
3369 | goto domain_init_error; | |
3370 | } | |
3371 | ||
3372 | switch (domain->type) { | |
3373 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3374 | if (kernel_domain) { |
3375 | /* Same domain seen twice, invalid! */ | |
3376 | goto domain_init_error; | |
3377 | } | |
dcf266c0 JG |
3378 | kernel_domain = domain; |
3379 | break; | |
3380 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3381 | if (ust_domain) { |
3382 | /* Same domain seen twice, invalid! */ | |
3383 | goto domain_init_error; | |
3384 | } | |
dcf266c0 JG |
3385 | ust_domain = domain; |
3386 | break; | |
3387 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3388 | if (jul_domain) { |
3389 | /* Same domain seen twice, invalid! */ | |
3390 | goto domain_init_error; | |
3391 | } | |
dcf266c0 JG |
3392 | jul_domain = domain; |
3393 | break; | |
5cdb6027 DG |
3394 | case LTTNG_DOMAIN_LOG4J: |
3395 | if (log4j_domain) { | |
3396 | /* Same domain seen twice, invalid! */ | |
3397 | goto domain_init_error; | |
3398 | } | |
3399 | log4j_domain = domain; | |
3400 | break; | |
0e115563 DG |
3401 | case LTTNG_DOMAIN_PYTHON: |
3402 | if (python_domain) { | |
3403 | /* Same domain seen twice, invalid! */ | |
3404 | goto domain_init_error; | |
3405 | } | |
3406 | python_domain = domain; | |
3407 | break; | |
dcf266c0 JG |
3408 | default: |
3409 | WARN("Invalid domain type"); | |
3410 | goto domain_init_error; | |
3411 | } | |
3412 | continue; | |
3413 | domain_init_error: | |
3414 | free(domain); | |
3415 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3416 | goto error; |
dcf266c0 JG |
3417 | } |
3418 | ||
2aaf5fc7 JR |
3419 | /* Apply overrides */ |
3420 | if (overrides) { | |
3421 | if (overrides->session_name) { | |
3422 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3423 | if (!name_override) { | |
3424 | ret = -LTTNG_ERR_NOMEM; | |
3425 | goto error; | |
3426 | } | |
3427 | ||
3428 | /* Overrides the session name to the provided name */ | |
3429 | xmlFree(name); | |
3430 | name = name_override; | |
3431 | } | |
3432 | } | |
3433 | ||
40b4155f | 3434 | if (overwrite) { |
dcf266c0 | 3435 | /* Destroy session if it exists */ |
d324faf7 | 3436 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3437 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3438 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3439 | goto error; |
dcf266c0 JG |
3440 | } |
3441 | } | |
3442 | ||
3443 | /* Create session type depending on output type */ | |
3444 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3445 | ret = create_snapshot_session((const char *) name, output_node, |
3446 | overrides); | |
dcf266c0 JG |
3447 | } else if (live_timer_interval && |
3448 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3449 | ret = create_session((const char *) name, |
1b08cbce | 3450 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3451 | } else { |
3452 | /* regular session */ | |
194dfca0 | 3453 | ret = create_session((const char *) name, |
1b08cbce | 3454 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3455 | } |
dcf266c0 | 3456 | if (ret) { |
c2da8cde | 3457 | goto error; |
dcf266c0 JG |
3458 | } |
3459 | ||
9e7c9f56 JR |
3460 | if (shm_path) { |
3461 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3462 | (const char *) shm_path); |
9e7c9f56 JR |
3463 | if (ret) { |
3464 | goto error; | |
3465 | } | |
3466 | } | |
3467 | ||
dcf266c0 JG |
3468 | for (node = xmlFirstElementChild(domains_node); node; |
3469 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3470 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3471 | if (ret) { |
3472 | goto end; | |
3473 | } | |
3474 | } | |
3475 | ||
66ea93b1 JG |
3476 | if (rotation_timer_interval) { |
3477 | ret = add_periodic_rotation((const char *) name, | |
3478 | rotation_timer_interval); | |
3479 | if (ret < 0) { | |
259c2674 JD |
3480 | goto error; |
3481 | } | |
66ea93b1 JG |
3482 | } |
3483 | if (rotation_size) { | |
3484 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3485 | rotation_size); |
66ea93b1 | 3486 | if (ret < 0) { |
259c2674 JD |
3487 | goto error; |
3488 | } | |
3489 | } | |
3490 | ||
dcf266c0 | 3491 | if (started) { |
d324faf7 | 3492 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3493 | if (ret) { |
3494 | goto end; | |
3495 | } | |
3496 | } | |
c2da8cde | 3497 | |
dcf266c0 | 3498 | end: |
b2579dc1 | 3499 | if (ret < 0) { |
d324faf7 JG |
3500 | ERR("Failed to load session %s: %s", (const char *) name, |
3501 | lttng_strerror(ret)); | |
3502 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3503 | } |
3504 | ||
c2da8cde | 3505 | error: |
dcf266c0 JG |
3506 | free(kernel_domain); |
3507 | free(ust_domain); | |
3508 | free(jul_domain); | |
5cdb6027 | 3509 | free(log4j_domain); |
135a3893 | 3510 | free(python_domain); |
d324faf7 | 3511 | xmlFree(name); |
9e7c9f56 | 3512 | xmlFree(shm_path); |
dcf266c0 JG |
3513 | return ret; |
3514 | } | |
3515 | ||
cf53c06d DG |
3516 | /* |
3517 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3518 | * Return -1 if the path is EPERM. | |
3519 | */ | |
3520 | static int validate_file_read_creds(const char *path) | |
3521 | { | |
3522 | int ret; | |
3523 | ||
3524 | assert(path); | |
3525 | ||
3526 | /* Can we read the file. */ | |
3527 | ret = access(path, R_OK); | |
3528 | if (!ret) { | |
3529 | goto valid; | |
3530 | } | |
3531 | if (errno == EACCES) { | |
3532 | return -1; | |
3533 | } else { | |
3534 | /* Invalid. */ | |
3535 | return 0; | |
3536 | } | |
3537 | valid: | |
3538 | return 1; | |
3539 | } | |
3540 | ||
dcf266c0 JG |
3541 | static |
3542 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3543 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3544 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3545 | { |
3546 | int ret, session_found = !session_name; | |
3547 | xmlDocPtr doc = NULL; | |
3548 | xmlNodePtr sessions_node; | |
3549 | xmlNodePtr session_node; | |
dcf266c0 JG |
3550 | |
3551 | assert(path); | |
3552 | assert(validation_ctx); | |
3553 | ||
cf53c06d DG |
3554 | ret = validate_file_read_creds(path); |
3555 | if (ret != 1) { | |
3556 | if (ret == -1) { | |
3557 | ret = -LTTNG_ERR_EPERM; | |
3558 | } else { | |
3559 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3560 | } | |
dcf266c0 JG |
3561 | goto end; |
3562 | } | |
3563 | ||
3564 | doc = xmlParseFile(path); | |
3565 | if (!doc) { | |
3566 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3567 | goto end; | |
3568 | } | |
3569 | ||
3570 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3571 | if (ret) { | |
3572 | ERR("Session configuration file validation failed"); | |
3573 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3574 | goto end; | |
3575 | } | |
3576 | ||
3577 | sessions_node = xmlDocGetRootElement(doc); | |
3578 | if (!sessions_node) { | |
55c9e7ca | 3579 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3580 | goto end; |
3581 | } | |
3582 | ||
3583 | for (session_node = xmlFirstElementChild(sessions_node); | |
3584 | session_node; session_node = | |
3585 | xmlNextElementSibling(session_node)) { | |
3586 | ret = process_session_node(session_node, | |
1b08cbce | 3587 | session_name, overwrite, overrides); |
dcf266c0 JG |
3588 | if (session_name && ret == 0) { |
3589 | /* Target session found and loaded */ | |
3590 | session_found = 1; | |
3591 | break; | |
3592 | } | |
3593 | } | |
3594 | end: | |
3595 | xmlFreeDoc(doc); | |
3596 | if (!ret) { | |
a96bc65d | 3597 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 | 3598 | } |
55c9e7ca JR |
3599 | if (ret == -LTTNG_ERR_NO_SESSION) { |
3600 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3601 | } | |
dcf266c0 JG |
3602 | return ret; |
3603 | } | |
3604 | ||
3605 | static | |
3606 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3607 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3608 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3609 | { |
3610 | int ret, session_found = !session_name; | |
dcf266c0 | 3611 | DIR *directory = NULL; |
cce35f91 JG |
3612 | struct lttng_dynamic_buffer file_path; |
3613 | size_t path_len; | |
dcf266c0 JG |
3614 | |
3615 | assert(path); | |
3616 | assert(validation_ctx); | |
cce35f91 JG |
3617 | path_len = strlen(path); |
3618 | lttng_dynamic_buffer_init(&file_path); | |
3619 | if (path_len >= LTTNG_PATH_MAX) { | |
3620 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3621 | path, path_len, LTTNG_PATH_MAX); | |
3622 | ret = -LTTNG_ERR_INVALID; | |
3623 | goto end; | |
3624 | } | |
dcf266c0 | 3625 | |
4af16958 DG |
3626 | directory = opendir(path); |
3627 | if (!directory) { | |
11143783 DG |
3628 | switch (errno) { |
3629 | case ENOTDIR: | |
0f0a81b5 DG |
3630 | /* Try the file loading. */ |
3631 | break; | |
11143783 DG |
3632 | case ENOENT: |
3633 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3634 | goto end; | |
3635 | default: | |
0f0a81b5 DG |
3636 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3637 | goto end; | |
4af16958 | 3638 | } |
dcf266c0 | 3639 | } |
4af16958 | 3640 | if (directory) { |
cce35f91 | 3641 | size_t file_path_root_len; |
dcf266c0 | 3642 | |
cce35f91 JG |
3643 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3644 | LTTNG_PATH_MAX); | |
3645 | if (ret) { | |
3646 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3647 | goto end; |
3648 | } | |
3649 | ||
cce35f91 JG |
3650 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3651 | if (ret) { | |
dcf266c0 | 3652 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3653 | goto end; |
3654 | } | |
3655 | ||
cce35f91 JG |
3656 | if (file_path.data[file_path.size - 1] != '/') { |
3657 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3658 | if (ret) { | |
3659 | ret = -LTTNG_ERR_NOMEM; | |
3660 | goto end; | |
3661 | } | |
dcf266c0 | 3662 | } |
cce35f91 | 3663 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3664 | |
3665 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3666 | for (;;) { |
3667 | size_t file_name_len; | |
3668 | struct dirent *result; | |
3669 | ||
3670 | /* | |
3671 | * When the end of the directory stream is reached, NULL | |
3672 | * is returned and errno is kept unchanged. When an | |
3673 | * error occurs, NULL is returned and errno is set | |
3674 | * accordingly. To distinguish between the two, set | |
3675 | * errno to zero before calling readdir(). | |
3676 | * | |
3677 | * On success, readdir() returns a pointer to a dirent | |
3678 | * structure. This structure may be statically | |
3679 | * allocated, do not attempt to free(3) it. | |
3680 | */ | |
3681 | errno = 0; | |
3682 | result = readdir(directory); | |
3683 | ||
ff86d8d0 | 3684 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3685 | if (!result) { |
3686 | if (errno) { | |
3687 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3688 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3689 | goto end; | |
3690 | } | |
3691 | break; | |
3692 | } | |
3693 | ||
3694 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3695 | |
3696 | if (file_name_len <= | |
3697 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3698 | continue; | |
3699 | } | |
3700 | ||
cce35f91 JG |
3701 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3702 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3703 | result->d_name, | |
3704 | /* +1 to account for NULL terminator. */ | |
3705 | file_path.size + file_name_len + 1, | |
3706 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3707 | continue; |
3708 | } | |
3709 | ||
cce35f91 | 3710 | /* Does the file end with .lttng? */ |
dcf266c0 | 3711 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3712 | result->d_name + file_name_len - sizeof( |
3713 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3714 | continue; |
3715 | } | |
3716 | ||
cce35f91 JG |
3717 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3718 | file_name_len + 1); | |
3719 | if (ret) { | |
3720 | ret = -LTTNG_ERR_NOMEM; | |
3721 | goto end; | |
3722 | } | |
dcf266c0 | 3723 | |
cce35f91 | 3724 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3725 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3726 | if (session_name && |
3727 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3728 | session_found = 1; |
3729 | break; | |
3730 | } | |
55c9e7ca JR |
3731 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3732 | goto end; | |
3733 | } | |
cce35f91 JG |
3734 | /* |
3735 | * Reset the buffer's size to the location of the | |
3736 | * path's trailing '/'. | |
3737 | */ | |
3738 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3739 | file_path_root_len); | |
3740 | if (ret) { | |
3741 | ret = -LTTNG_ERR_UNK; | |
3742 | goto end; | |
3743 | } | |
dcf266c0 | 3744 | } |
dcf266c0 JG |
3745 | } else { |
3746 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3747 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3748 | if (ret) { |
3749 | goto end; | |
dcf266c0 | 3750 | } |
55c9e7ca | 3751 | session_found = 1; |
dcf266c0 JG |
3752 | } |
3753 | ||
55c9e7ca | 3754 | ret = 0; |
dcf266c0 JG |
3755 | end: |
3756 | if (directory) { | |
3757 | if (closedir(directory)) { | |
3758 | PERROR("closedir"); | |
3759 | } | |
3760 | } | |
55c9e7ca JR |
3761 | if (!ret && !session_found) { |
3762 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3763 | } |
cce35f91 | 3764 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3765 | return ret; |
3766 | } | |
3767 | ||
ab38c13f DG |
3768 | /* |
3769 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3770 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3771 | */ |
3772 | static int validate_path_creds(const char *path) | |
3773 | { | |
3774 | int ret, uid = getuid(); | |
3775 | struct stat buf; | |
3776 | ||
3777 | assert(path); | |
3778 | ||
cf53c06d | 3779 | if (uid == 0) { |
ab38c13f DG |
3780 | goto valid; |
3781 | } | |
3782 | ||
3783 | ret = stat(path, &buf); | |
3784 | if (ret < 0) { | |
3785 | if (errno != ENOENT) { | |
3786 | PERROR("stat"); | |
3787 | } | |
ab38c13f DG |
3788 | goto valid; |
3789 | } | |
3790 | ||
3791 | if (buf.st_uid != uid) { | |
3792 | goto invalid; | |
3793 | } | |
3794 | ||
3795 | valid: | |
ab38c13f | 3796 | return 1; |
cf53c06d DG |
3797 | invalid: |
3798 | return 0; | |
ab38c13f DG |
3799 | } |
3800 | ||
dcf266c0 JG |
3801 | LTTNG_HIDDEN |
3802 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3803 | int overwrite, unsigned int autoload, |
3804 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3805 | { |
3806 | int ret; | |
6c66fa0f | 3807 | bool session_loaded = false; |
cf53c06d | 3808 | const char *path_ptr = NULL; |
dcf266c0 JG |
3809 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3810 | ||
3811 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3812 | if (ret) { | |
3813 | goto end; | |
3814 | } | |
3815 | ||
3816 | if (!path) { | |
4f00620d | 3817 | const char *home_path; |
ab38c13f DG |
3818 | const char *sys_path; |
3819 | ||
dcf266c0 | 3820 | /* Try home path */ |
ab38c13f | 3821 | home_path = utils_get_home_dir(); |
dcf266c0 | 3822 | if (home_path) { |
ab38c13f | 3823 | char path[PATH_MAX]; |
dcf266c0 | 3824 | |
d4fcf703 DG |
3825 | /* |
3826 | * Try user session configuration path. Ignore error here so we can | |
3827 | * continue loading the system wide sessions. | |
3828 | */ | |
ab38c13f DG |
3829 | if (autoload) { |
3830 | ret = snprintf(path, sizeof(path), | |
3831 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3832 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3833 | if (ret < 0) { |
3834 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3835 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3836 | goto end; |
3837 | } | |
3838 | ||
3839 | /* | |
3840 | * Credentials are only validated for the autoload in order to | |
3841 | * avoid any user session daemon to try to load kernel sessions | |
3842 | * automatically and failing all the times. | |
3843 | */ | |
3844 | ret = validate_path_creds(path); | |
3845 | if (ret) { | |
3846 | path_ptr = path; | |
3847 | } | |
ab38c13f DG |
3848 | } else { |
3849 | ret = snprintf(path, sizeof(path), | |
3850 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3851 | if (ret < 0) { |
3852 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3853 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3854 | goto end; |
3855 | } | |
3856 | path_ptr = path; | |
ab38c13f | 3857 | } |
cf53c06d DG |
3858 | if (path_ptr) { |
3859 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3860 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3861 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3862 | goto end; | |
3863 | } | |
3864 | /* | |
3865 | * Continue even if the session was found since we have to try | |
3866 | * the system wide sessions. | |
3867 | */ | |
6c66fa0f | 3868 | session_loaded = true; |
ab38c13f | 3869 | } |
d4fcf703 | 3870 | } |
ab38c13f | 3871 | |
cf53c06d DG |
3872 | /* Reset path pointer for the system wide dir. */ |
3873 | path_ptr = NULL; | |
3874 | ||
d4fcf703 DG |
3875 | /* Try system wide configuration directory. */ |
3876 | if (autoload) { | |
3877 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3878 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3879 | ret = validate_path_creds(sys_path); |
3880 | if (ret) { | |
3881 | path_ptr = sys_path; | |
3882 | } | |
d4fcf703 | 3883 | } else { |
cf53c06d DG |
3884 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3885 | path_ptr = sys_path; | |
d4fcf703 DG |
3886 | } |
3887 | ||
cf53c06d DG |
3888 | if (path_ptr) { |
3889 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3890 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3891 | if (!ret) { |
3892 | session_loaded = true; | |
3893 | } | |
55c9e7ca JR |
3894 | } else { |
3895 | ret = 0; | |
dcf266c0 JG |
3896 | } |
3897 | } else { | |
3898 | ret = access(path, F_OK); | |
3899 | if (ret < 0) { | |
3900 | PERROR("access"); | |
3901 | switch (errno) { | |
3902 | case ENOENT: | |
3903 | ret = -LTTNG_ERR_INVALID; | |
3904 | WARN("Session configuration path does not exist."); | |
3905 | break; | |
3906 | case EACCES: | |
3907 | ret = -LTTNG_ERR_EPERM; | |
3908 | break; | |
3909 | default: | |
3910 | ret = -LTTNG_ERR_UNK; | |
3911 | break; | |
3912 | } | |
3913 | goto end; | |
3914 | } | |
3915 | ||
3916 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3917 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3918 | } |
3919 | end: | |
3920 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3921 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3922 | /* | |
3923 | * Don't report an error if no sessions are found when called | |
3924 | * without a session_name or a search path. | |
3925 | */ | |
3926 | ret = 0; | |
3927 | } | |
6c66fa0f JG |
3928 | |
3929 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3930 | /* A matching session was found in one of the search paths. */ | |
3931 | ret = 0; | |
3932 | } | |
dcf266c0 JG |
3933 | return ret; |
3934 | } | |
56766c75 JG |
3935 | |
3936 | static | |
3937 | void __attribute__((destructor)) session_config_exit(void) | |
3938 | { | |
3939 | xmlCleanupParser(); | |
3940 | } |