Commit | Line | Data |
---|---|---|
1501a7f3 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1501a7f3 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
1501a7f3 | 5 | * |
1501a7f3 JG |
6 | */ |
7 | ||
159b042f | 8 | #include "lttng/tracker.h" |
6c1c0768 | 9 | #define _LGPL_SOURCE |
1501a7f3 | 10 | #include <assert.h> |
1501a7f3 | 11 | #include <ctype.h> |
1501a7f3 JG |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
36f2332b | 15 | #include <inttypes.h> |
dcf266c0 JG |
16 | #include <dirent.h> |
17 | #include <unistd.h> | |
18 | #include <sys/types.h> | |
19 | #include <sys/stat.h> | |
6c66fa0f | 20 | #include <stdbool.h> |
1501a7f3 JG |
21 | |
22 | #include <common/defaults.h> | |
23 | #include <common/error.h> | |
24 | #include <common/macros.h> | |
25 | #include <common/utils.h> | |
cce35f91 | 26 | #include <common/dynamic-buffer.h> |
c3e68e71 | 27 | #include <common/dynamic-array.h> |
e8fa9fb0 | 28 | #include <common/compat/getenv.h> |
fb198a11 JG |
29 | #include <lttng/lttng-error.h> |
30 | #include <libxml/parser.h> | |
31 | #include <libxml/valid.h> | |
32 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
33 | #include <libxml/tree.h> |
34 | #include <lttng/lttng.h> | |
35 | #include <lttng/snapshot.h> | |
259c2674 | 36 | #include <lttng/rotation.h> |
c1e83fb4 | 37 | #include <lttng/userspace-probe.h> |
1501a7f3 | 38 | |
f40ef1d5 | 39 | #include "session-config.h" |
36f2332b | 40 | #include "config-internal.h" |
1501a7f3 | 41 | |
c1e83fb4 FD |
42 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
43 | ||
1501a7f3 JG |
44 | struct handler_filter_args { |
45 | const char* section; | |
46 | config_entry_handler_cb handler; | |
47 | void *user_data; | |
48 | }; | |
49 | ||
dcf266c0 JG |
50 | struct session_config_validation_ctx { |
51 | xmlSchemaParserCtxtPtr parser_ctx; | |
52 | xmlSchemaPtr schema; | |
53 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
54 | }; | |
55 | ||
72c2e2e1 | 56 | LTTNG_HIDDEN const char * const config_element_all = "all"; |
1501a7f3 JG |
57 | const char * const config_str_yes = "yes"; |
58 | const char * const config_str_true = "true"; | |
59 | const char * const config_str_on = "on"; | |
60 | const char * const config_str_no = "no"; | |
61 | const char * const config_str_false = "false"; | |
62 | const char * const config_str_off = "off"; | |
36f2332b | 63 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 64 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
65 | const char * const config_xml_indent_string = "\t"; |
66 | const char * const config_xml_true = "true"; | |
67 | const char * const config_xml_false = "false"; | |
1501a7f3 | 68 | |
fb198a11 JG |
69 | const char * const config_element_channel = "channel"; |
70 | const char * const config_element_channels = "channels"; | |
c3e68e71 JR |
71 | const char * const config_element_map = "map"; |
72 | const char * const config_element_maps = "maps"; | |
fb198a11 JG |
73 | const char * const config_element_domain = "domain"; |
74 | const char * const config_element_domains = "domains"; | |
75 | const char * const config_element_event = "event"; | |
76 | const char * const config_element_events = "events"; | |
77 | const char * const config_element_context = "context"; | |
78 | const char * const config_element_contexts = "contexts"; | |
79 | const char * const config_element_attributes = "attributes"; | |
80 | const char * const config_element_exclusion = "exclusion"; | |
81 | const char * const config_element_exclusions = "exclusions"; | |
82 | const char * const config_element_function_attributes = "function_attributes"; | |
83 | const char * const config_element_probe_attributes = "probe_attributes"; | |
84 | const char * const config_element_symbol_name = "symbol_name"; | |
85 | const char * const config_element_address = "address"; | |
86 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 87 | |
d0687332 JG |
88 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method"; |
89 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
90 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
91 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
92 | LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
93 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
94 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
95 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
96 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
97 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 98 | |
fb198a11 JG |
99 | const char * const config_element_name = "name"; |
100 | const char * const config_element_enabled = "enabled"; | |
101 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
102 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
103 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
104 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
105 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
106 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
107 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
108 | const char * const config_element_output = "output"; |
109 | const char * const config_element_output_type = "output_type"; | |
110 | const char * const config_element_tracefile_size = "tracefile_size"; | |
111 | const char * const config_element_tracefile_count = "tracefile_count"; | |
112 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
113 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
114 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
115 | const char * const config_element_type = "type"; |
116 | const char * const config_element_buffer_type = "buffer_type"; | |
117 | const char * const config_element_session = "session"; | |
118 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
119 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
120 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
121 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
122 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
123 | const char * const config_element_config = "config"; |
124 | const char * const config_element_started = "started"; | |
125 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
126 | const char * const config_element_loglevel = "loglevel"; | |
127 | const char * const config_element_loglevel_type = "loglevel_type"; | |
128 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 129 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
130 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
131 | const char * const config_element_consumer_output = "consumer_output"; | |
132 | const char * const config_element_destination = "destination"; | |
133 | const char * const config_element_path = "path"; | |
134 | const char * const config_element_net_output = "net_output"; | |
135 | const char * const config_element_control_uri = "control_uri"; | |
136 | const char * const config_element_data_uri = "data_uri"; | |
137 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
138 | const char * const config_element_pid = "pid"; |
139 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 140 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
159b042f JG |
141 | |
142 | LTTNG_HIDDEN const char * const config_element_process_attr_id = "id"; | |
143 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
144 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
145 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
146 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
147 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
148 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
149 | LTTNG_HIDDEN const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
150 | LTTNG_HIDDEN const char * const config_element_process_attr_values = "process_attr_values"; | |
151 | LTTNG_HIDDEN const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
152 | LTTNG_HIDDEN const char * const config_element_process_attr_pid_value = "pid"; | |
153 | LTTNG_HIDDEN const char * const config_element_process_attr_vpid_value = "vpid"; | |
154 | LTTNG_HIDDEN const char * const config_element_process_attr_uid_value = "uid"; | |
155 | LTTNG_HIDDEN const char * const config_element_process_attr_vuid_value = "vuid"; | |
156 | LTTNG_HIDDEN const char * const config_element_process_attr_gid_value = "gid"; | |
157 | LTTNG_HIDDEN const char * const config_element_process_attr_vgid_value = "vgid"; | |
158 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 159 | |
f7af9a72 JG |
160 | /* Used for support of legacy tracker serialization (< 2.12). */ |
161 | LTTNG_HIDDEN const char * const config_element_trackers_legacy = "trackers"; | |
162 | LTTNG_HIDDEN const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
163 | LTTNG_HIDDEN const char * const config_element_tracker_targets_legacy = "targets"; | |
164 | LTTNG_HIDDEN const char * const config_element_tracker_pid_target_legacy = "pid_target"; | |
165 | LTTNG_HIDDEN const char * const config_element_tracker_pid_legacy = "pid"; | |
166 | ||
ce6176f2 JG |
167 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
168 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
169 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
170 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
171 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 172 | |
fb198a11 JG |
173 | const char * const config_domain_type_kernel = "KERNEL"; |
174 | const char * const config_domain_type_ust = "UST"; | |
175 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 176 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 177 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
178 | |
179 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
180 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
181 | const char * const config_buffer_type_global = "GLOBAL"; | |
182 | ||
183 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
184 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
185 | ||
186 | const char * const config_output_type_splice = "SPLICE"; | |
187 | const char * const config_output_type_mmap = "MMAP"; | |
188 | ||
c3e68e71 JR |
189 | LTTNG_HIDDEN const char * const config_element_bitness = "bitness"; |
190 | LTTNG_HIDDEN const char * const config_element_boundary_policy = "boundary_policy"; | |
191 | LTTNG_HIDDEN const char * const config_element_coalesce_hits = "coalesce_hits"; | |
192 | LTTNG_HIDDEN const char * const config_element_dimensions = "dimensions"; | |
193 | LTTNG_HIDDEN const char * const config_element_dimension = "dimension"; | |
194 | LTTNG_HIDDEN const char * const config_element_dimension_size = "size"; | |
195 | ||
196 | LTTNG_HIDDEN const char * const config_boundary_policy_overflow = "OVERFLOW"; | |
197 | ||
fb198a11 JG |
198 | const char * const config_loglevel_type_all = "ALL"; |
199 | const char * const config_loglevel_type_range = "RANGE"; | |
200 | const char * const config_loglevel_type_single = "SINGLE"; | |
201 | ||
202 | const char * const config_event_type_all = "ALL"; | |
203 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
204 | const char * const config_event_type_probe = "PROBE"; | |
a416382b | 205 | LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
206 | const char * const config_event_type_function = "FUNCTION"; |
207 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
208 | const char * const config_event_type_noop = "NOOP"; | |
209 | const char * const config_event_type_syscall = "SYSCALL"; | |
210 | const char * const config_event_type_kprobe = "KPROBE"; | |
211 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
212 | ||
213 | const char * const config_event_context_pid = "PID"; | |
214 | const char * const config_event_context_procname = "PROCNAME"; | |
215 | const char * const config_event_context_prio = "PRIO"; | |
216 | const char * const config_event_context_nice = "NICE"; | |
217 | const char * const config_event_context_vpid = "VPID"; | |
218 | const char * const config_event_context_tid = "TID"; | |
219 | const char * const config_event_context_vtid = "VTID"; | |
220 | const char * const config_event_context_ppid = "PPID"; | |
221 | const char * const config_event_context_vppid = "VPPID"; | |
222 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
223 | const char * const config_event_context_hostname = "HOSTNAME"; | |
224 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 225 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
226 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
227 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
228 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
229 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
230 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
231 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
232 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
40e14884 MJ |
233 | LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS"; |
234 | LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS"; | |
235 | LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS"; | |
236 | LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS"; | |
237 | LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS"; | |
d37ac3cd | 238 | LTTNG_HIDDEN const char * const config_event_context_time_ns = "TIME_NS"; |
40e14884 MJ |
239 | LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS"; |
240 | LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS"; | |
499cbfa1 MJ |
241 | LTTNG_HIDDEN const char * const config_event_context_uid = "UID"; |
242 | LTTNG_HIDDEN const char * const config_event_context_euid = "EUID"; | |
243 | LTTNG_HIDDEN const char * const config_event_context_suid = "SUID"; | |
244 | LTTNG_HIDDEN const char * const config_event_context_gid = "GID"; | |
245 | LTTNG_HIDDEN const char * const config_event_context_egid = "EGID"; | |
246 | LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID"; | |
247 | LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID"; | |
248 | LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID"; | |
249 | LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID"; | |
250 | LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID"; | |
251 | LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID"; | |
252 | LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 253 | |
fbd987c9 JG |
254 | /* Deprecated symbols */ |
255 | const char * const config_element_perf; | |
256 | ||
d7b645e2 JR |
257 | enum process_event_node_phase { |
258 | CREATION = 0, | |
259 | ENABLE = 1, | |
260 | }; | |
261 | ||
dcf266c0 JG |
262 | struct consumer_output { |
263 | int enabled; | |
264 | char *path; | |
265 | char *control_uri; | |
266 | char *data_uri; | |
267 | }; | |
268 | ||
1501a7f3 JG |
269 | static int config_entry_handler_filter(struct handler_filter_args *args, |
270 | const char *section, const char *name, const char *value) | |
271 | { | |
272 | int ret = 0; | |
273 | struct config_entry entry = { section, name, value }; | |
274 | ||
275 | assert(args); | |
276 | ||
277 | if (!section || !name || !value) { | |
278 | ret = -EIO; | |
279 | goto end; | |
280 | } | |
281 | ||
282 | if (args->section) { | |
283 | if (strcmp(args->section, section)) { | |
284 | goto end; | |
285 | } | |
286 | } | |
287 | ||
288 | ret = args->handler(&entry, args->user_data); | |
289 | end: | |
290 | return ret; | |
291 | } | |
292 | ||
293 | LTTNG_HIDDEN | |
294 | int config_get_section_entries(const char *override_path, const char *section, | |
295 | config_entry_handler_cb handler, void *user_data) | |
296 | { | |
297 | int ret = 0; | |
4f00620d | 298 | const char *path; |
1501a7f3 JG |
299 | FILE *config_file = NULL; |
300 | struct handler_filter_args filter = { section, handler, user_data }; | |
301 | ||
7ab02a27 DG |
302 | /* First, try system-wide conf. file. */ |
303 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
304 | ||
305 | config_file = fopen(path, "r"); | |
306 | if (config_file) { | |
307 | DBG("Loading daemon conf file at %s", path); | |
308 | /* | |
309 | * Return value is not very important here since error or not, we | |
310 | * continue and try the next possible conf. file. | |
311 | */ | |
312 | (void) ini_parse_file(config_file, | |
313 | (ini_entry_handler) config_entry_handler_filter, | |
314 | (void *) &filter); | |
315 | fclose(config_file); | |
316 | } | |
317 | ||
318 | /* Second is the user local configuration. */ | |
319 | path = utils_get_home_dir(); | |
320 | if (path) { | |
321 | char fullpath[PATH_MAX]; | |
322 | ||
323 | ret = snprintf(fullpath, sizeof(fullpath), | |
324 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
325 | if (ret < 0) { | |
326 | PERROR("snprintf user conf. path"); | |
327 | goto error; | |
328 | } | |
329 | ||
330 | config_file = fopen(fullpath, "r"); | |
331 | if (config_file) { | |
332 | DBG("Loading daemon user conf file at %s", path); | |
333 | /* | |
334 | * Return value is not very important here since error or not, we | |
335 | * continue and try the next possible conf. file. | |
336 | */ | |
337 | (void) ini_parse_file(config_file, | |
338 | (ini_entry_handler) config_entry_handler_filter, | |
339 | (void *) &filter); | |
340 | fclose(config_file); | |
341 | } | |
342 | } | |
343 | ||
344 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
345 | if (override_path) { |
346 | config_file = fopen(override_path, "r"); | |
347 | if (config_file) { | |
7ab02a27 DG |
348 | DBG("Loading daemon command line conf file at %s", override_path); |
349 | (void) ini_parse_file(config_file, | |
350 | (ini_entry_handler) config_entry_handler_filter, | |
351 | (void *) &filter); | |
352 | fclose(config_file); | |
1501a7f3 JG |
353 | } else { |
354 | ERR("Failed to open daemon configuration file at %s", | |
355 | override_path); | |
356 | ret = -ENOENT; | |
7ab02a27 | 357 | goto error; |
1501a7f3 JG |
358 | } |
359 | } | |
360 | ||
7ab02a27 DG |
361 | /* Everything went well. */ |
362 | ret = 0; | |
1501a7f3 | 363 | |
7ab02a27 | 364 | error: |
1501a7f3 JG |
365 | return ret; |
366 | } | |
367 | ||
368 | LTTNG_HIDDEN | |
369 | int config_parse_value(const char *value) | |
370 | { | |
371 | int i, ret = 0; | |
372 | char *endptr, *lower_str; | |
373 | size_t len; | |
374 | unsigned long v; | |
375 | ||
376 | len = strlen(value); | |
377 | if (!len) { | |
378 | ret = -1; | |
379 | goto end; | |
380 | } | |
381 | ||
382 | v = strtoul(value, &endptr, 10); | |
383 | if (endptr != value) { | |
384 | ret = v; | |
385 | goto end; | |
386 | } | |
387 | ||
388 | lower_str = zmalloc(len + 1); | |
389 | if (!lower_str) { | |
390 | PERROR("zmalloc"); | |
391 | ret = -errno; | |
392 | goto end; | |
393 | } | |
394 | ||
395 | for (i = 0; i < len; i++) { | |
396 | lower_str[i] = tolower(value[i]); | |
397 | } | |
398 | ||
399 | if (!strcmp(lower_str, config_str_yes) || | |
400 | !strcmp(lower_str, config_str_true) || | |
401 | !strcmp(lower_str, config_str_on)) { | |
402 | ret = 1; | |
403 | } else if (!strcmp(lower_str, config_str_no) || | |
404 | !strcmp(lower_str, config_str_false) || | |
405 | !strcmp(lower_str, config_str_off)) { | |
406 | ret = 0; | |
407 | } else { | |
408 | ret = -1; | |
409 | } | |
410 | ||
411 | free(lower_str); | |
412 | end: | |
413 | return ret; | |
414 | } | |
36f2332b JG |
415 | |
416 | /* | |
417 | * Returns a xmlChar string which must be released using xmlFree(). | |
418 | */ | |
419 | static xmlChar *encode_string(const char *in_str) | |
420 | { | |
421 | xmlChar *out_str = NULL; | |
422 | xmlCharEncodingHandlerPtr handler; | |
423 | int out_len, ret, in_len; | |
424 | ||
425 | assert(in_str); | |
426 | ||
427 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
428 | if (!handler) { | |
429 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
430 | goto end; | |
431 | } | |
432 | ||
433 | in_len = strlen(in_str); | |
434 | /* | |
f76d886f JG |
435 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
436 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 437 | */ |
f76d886f | 438 | out_len = (in_len * 4) + 1; |
36f2332b JG |
439 | out_str = xmlMalloc(out_len); |
440 | if (!out_str) { | |
441 | goto end; | |
442 | } | |
443 | ||
444 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
445 | if (ret < 0) { | |
446 | xmlFree(out_str); | |
447 | out_str = NULL; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | /* out_len is now the size of out_str */ | |
452 | out_str[out_len] = '\0'; | |
453 | end: | |
454 | return out_str; | |
455 | } | |
456 | ||
457 | LTTNG_HIDDEN | |
705bb62f | 458 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
459 | { |
460 | int ret; | |
461 | struct config_writer *writer; | |
462 | xmlOutputBufferPtr buffer; | |
463 | ||
464 | writer = zmalloc(sizeof(struct config_writer)); | |
465 | if (!writer) { | |
466 | PERROR("zmalloc config_writer_create"); | |
467 | goto end; | |
468 | } | |
469 | ||
470 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
471 | if (!buffer) { | |
472 | goto error_destroy; | |
473 | } | |
474 | ||
475 | writer->writer = xmlNewTextWriter(buffer); | |
476 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
477 | config_xml_encoding, NULL); | |
478 | if (ret < 0) { | |
479 | goto error_destroy; | |
480 | } | |
481 | ||
482 | ret = xmlTextWriterSetIndentString(writer->writer, | |
483 | BAD_CAST config_xml_indent_string); | |
705bb62f | 484 | if (ret) { |
36f2332b JG |
485 | goto error_destroy; |
486 | } | |
487 | ||
705bb62f JRJ |
488 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
489 | if (ret) { | |
36f2332b JG |
490 | goto error_destroy; |
491 | } | |
492 | ||
493 | end: | |
494 | return writer; | |
495 | error_destroy: | |
496 | config_writer_destroy(writer); | |
497 | return NULL; | |
498 | } | |
499 | ||
500 | LTTNG_HIDDEN | |
501 | int config_writer_destroy(struct config_writer *writer) | |
502 | { | |
503 | int ret = 0; | |
504 | ||
505 | if (!writer) { | |
506 | ret = -EINVAL; | |
507 | goto end; | |
508 | } | |
509 | ||
510 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
511 | WARN("Could not close XML document"); | |
512 | ret = -EIO; | |
513 | } | |
514 | ||
515 | if (writer->writer) { | |
516 | xmlFreeTextWriter(writer->writer); | |
517 | } | |
518 | ||
519 | free(writer); | |
520 | end: | |
521 | return ret; | |
522 | } | |
523 | ||
524 | LTTNG_HIDDEN | |
525 | int config_writer_open_element(struct config_writer *writer, | |
526 | const char *element_name) | |
527 | { | |
528 | int ret; | |
529 | xmlChar *encoded_element_name; | |
530 | ||
531 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
532 | ret = -1; | |
533 | goto end; | |
534 | } | |
535 | ||
536 | encoded_element_name = encode_string(element_name); | |
537 | if (!encoded_element_name) { | |
538 | ret = -1; | |
539 | goto end; | |
540 | } | |
541 | ||
542 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
543 | xmlFree(encoded_element_name); | |
544 | end: | |
28676a1d | 545 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
546 | } |
547 | ||
e10b6a1c JG |
548 | LTTNG_HIDDEN |
549 | int config_writer_write_attribute(struct config_writer *writer, | |
550 | const char *name, const char *value) | |
551 | { | |
552 | int ret; | |
553 | xmlChar *encoded_name = NULL; | |
554 | xmlChar *encoded_value = NULL; | |
555 | ||
556 | if (!writer || !writer->writer || !name || !name[0]) { | |
557 | ret = -1; | |
558 | goto end; | |
559 | } | |
560 | ||
561 | encoded_name = encode_string(name); | |
562 | if (!encoded_name) { | |
563 | ret = -1; | |
564 | goto end; | |
565 | } | |
566 | ||
567 | encoded_value = encode_string(value); | |
568 | if (!encoded_value) { | |
569 | ret = -1; | |
570 | goto end; | |
571 | } | |
572 | ||
573 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
574 | encoded_value); | |
575 | end: | |
576 | xmlFree(encoded_name); | |
577 | xmlFree(encoded_value); | |
578 | return ret >= 0 ? 0 : ret; | |
579 | } | |
580 | ||
36f2332b JG |
581 | LTTNG_HIDDEN |
582 | int config_writer_close_element(struct config_writer *writer) | |
583 | { | |
584 | int ret; | |
585 | ||
586 | if (!writer || !writer->writer) { | |
587 | ret = -1; | |
588 | goto end; | |
589 | } | |
590 | ||
591 | ret = xmlTextWriterEndElement(writer->writer); | |
592 | end: | |
28676a1d | 593 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
594 | } |
595 | ||
596 | LTTNG_HIDDEN | |
597 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
598 | const char *element_name, uint64_t value) | |
599 | { | |
600 | int ret; | |
601 | xmlChar *encoded_element_name; | |
602 | ||
603 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
604 | ret = -1; | |
605 | goto end; | |
606 | } | |
607 | ||
608 | encoded_element_name = encode_string(element_name); | |
609 | if (!encoded_element_name) { | |
610 | ret = -1; | |
611 | goto end; | |
612 | } | |
613 | ||
614 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
615 | encoded_element_name, "%" PRIu64, value); | |
616 | xmlFree(encoded_element_name); | |
617 | end: | |
28676a1d | 618 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
619 | } |
620 | ||
621 | LTTNG_HIDDEN | |
622 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
623 | const char *element_name, int64_t value) | |
624 | { | |
625 | int ret; | |
626 | xmlChar *encoded_element_name; | |
627 | ||
628 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
629 | ret = -1; | |
630 | goto end; | |
631 | } | |
632 | ||
633 | encoded_element_name = encode_string(element_name); | |
634 | if (!encoded_element_name) { | |
635 | ret = -1; | |
636 | goto end; | |
637 | } | |
638 | ||
639 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
640 | encoded_element_name, "%" PRIi64, value); | |
641 | xmlFree(encoded_element_name); | |
642 | end: | |
28676a1d | 643 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
644 | } |
645 | ||
646 | LTTNG_HIDDEN | |
647 | int config_writer_write_element_bool(struct config_writer *writer, | |
648 | const char *element_name, int value) | |
649 | { | |
650 | return config_writer_write_element_string(writer, element_name, | |
651 | value ? config_xml_true : config_xml_false); | |
652 | } | |
653 | ||
654 | LTTNG_HIDDEN | |
655 | int config_writer_write_element_string(struct config_writer *writer, | |
656 | const char *element_name, const char *value) | |
657 | { | |
658 | int ret; | |
659 | xmlChar *encoded_element_name = NULL; | |
660 | xmlChar *encoded_value = NULL; | |
661 | ||
662 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
663 | !value) { | |
664 | ret = -1; | |
665 | goto end; | |
666 | } | |
667 | ||
668 | encoded_element_name = encode_string(element_name); | |
669 | if (!encoded_element_name) { | |
670 | ret = -1; | |
671 | goto end; | |
672 | } | |
673 | ||
674 | encoded_value = encode_string(value); | |
675 | if (!encoded_value) { | |
676 | ret = -1; | |
677 | goto end; | |
678 | } | |
679 | ||
680 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 681 | encoded_value); |
36f2332b JG |
682 | end: |
683 | xmlFree(encoded_element_name); | |
684 | xmlFree(encoded_value); | |
28676a1d | 685 | return ret >= 0 ? 0 : ret; |
36f2332b | 686 | } |
dcf266c0 JG |
687 | |
688 | static | |
689 | void xml_error_handler(void *ctx, const char *format, ...) | |
690 | { | |
691 | char *errMsg; | |
692 | va_list args; | |
693 | int ret; | |
694 | ||
695 | va_start(args, format); | |
696 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 697 | va_end(args); |
dcf266c0 JG |
698 | if (ret == -1) { |
699 | ERR("String allocation failed in xml error handler"); | |
700 | return; | |
701 | } | |
dcf266c0 JG |
702 | |
703 | fprintf(stderr, "XML Error: %s", errMsg); | |
704 | free(errMsg); | |
705 | } | |
706 | ||
707 | static | |
708 | void fini_session_config_validation_ctx( | |
709 | struct session_config_validation_ctx *ctx) | |
710 | { | |
711 | if (ctx->parser_ctx) { | |
712 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
713 | } | |
714 | ||
715 | if (ctx->schema) { | |
716 | xmlSchemaFree(ctx->schema); | |
717 | } | |
718 | ||
719 | if (ctx->schema_validation_ctx) { | |
720 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
721 | } | |
722 | ||
723 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
724 | } | |
725 | ||
54e399cb | 726 | static |
a3ecaea8 | 727 | char *get_session_config_xsd_path(void) |
54e399cb JG |
728 | { |
729 | char *xsd_path; | |
e8fa9fb0 | 730 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
731 | size_t base_path_len; |
732 | size_t max_path_len; | |
733 | ||
734 | if (!base_path) { | |
735 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
736 | } | |
737 | ||
738 | base_path_len = strlen(base_path); | |
739 | max_path_len = base_path_len + | |
740 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
741 | xsd_path = zmalloc(max_path_len); | |
742 | if (!xsd_path) { | |
743 | goto end; | |
744 | } | |
745 | ||
00a7f6f8 | 746 | strcpy(xsd_path, base_path); |
54e399cb JG |
747 | if (xsd_path[base_path_len - 1] != '/') { |
748 | xsd_path[base_path_len++] = '/'; | |
749 | } | |
750 | ||
00a7f6f8 | 751 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
752 | end: |
753 | return xsd_path; | |
754 | } | |
755 | ||
dcf266c0 JG |
756 | static |
757 | int init_session_config_validation_ctx( | |
758 | struct session_config_validation_ctx *ctx) | |
759 | { | |
760 | int ret; | |
54e399cb JG |
761 | char *xsd_path = get_session_config_xsd_path(); |
762 | ||
763 | if (!xsd_path) { | |
764 | ret = -LTTNG_ERR_NOMEM; | |
765 | goto end; | |
766 | } | |
dcf266c0 | 767 | |
54e399cb | 768 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
769 | if (!ctx->parser_ctx) { |
770 | ERR("XSD parser context creation failed"); | |
771 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
772 | goto end; | |
773 | } | |
774 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
775 | xml_error_handler, NULL); | |
776 | ||
777 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
778 | if (!ctx->schema) { | |
779 | ERR("XSD parsing failed"); | |
780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
781 | goto end; | |
782 | } | |
783 | ||
784 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
785 | if (!ctx->schema_validation_ctx) { | |
786 | ERR("XSD validation context creation failed"); | |
787 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
788 | goto end; | |
789 | } | |
790 | ||
791 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
792 | xml_error_handler, NULL); | |
793 | ret = 0; | |
794 | ||
795 | end: | |
796 | if (ret) { | |
797 | fini_session_config_validation_ctx(ctx); | |
798 | } | |
799 | ||
54e399cb | 800 | free(xsd_path); |
dcf266c0 JG |
801 | return ret; |
802 | } | |
803 | ||
804 | static | |
805 | int parse_uint(xmlChar *str, uint64_t *val) | |
806 | { | |
807 | int ret; | |
808 | char *endptr; | |
809 | ||
810 | if (!str || !val) { | |
811 | ret = -1; | |
812 | goto end; | |
813 | } | |
814 | ||
815 | *val = strtoull((const char *) str, &endptr, 10); | |
816 | if (!endptr || *endptr) { | |
817 | ret = -1; | |
818 | } else { | |
819 | ret = 0; | |
820 | } | |
821 | ||
822 | end: | |
823 | return ret; | |
824 | } | |
825 | ||
826 | static | |
827 | int parse_int(xmlChar *str, int64_t *val) | |
828 | { | |
829 | int ret; | |
830 | char *endptr; | |
831 | ||
832 | if (!str || !val) { | |
833 | ret = -1; | |
834 | goto end; | |
835 | } | |
836 | ||
837 | *val = strtoll((const char *) str, &endptr, 10); | |
838 | if (!endptr || *endptr) { | |
839 | ret = -1; | |
840 | } else { | |
841 | ret = 0; | |
842 | } | |
843 | ||
844 | end: | |
845 | return ret; | |
846 | } | |
847 | ||
848 | static | |
849 | int parse_bool(xmlChar *str, int *val) | |
850 | { | |
851 | int ret = 0; | |
852 | ||
853 | if (!str || !val) { | |
854 | ret = -1; | |
855 | goto end; | |
856 | } | |
857 | ||
858 | if (!strcmp((const char *) str, config_xml_true)) { | |
859 | *val = 1; | |
860 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
861 | *val = 0; | |
862 | } else { | |
863 | WARN("Invalid boolean value encoutered (%s).", | |
864 | (const char *) str); | |
865 | ret = -1; | |
866 | } | |
867 | end: | |
868 | return ret; | |
869 | } | |
870 | ||
871 | static | |
872 | int get_domain_type(xmlChar *domain) | |
873 | { | |
874 | int ret; | |
875 | ||
876 | if (!domain) { | |
877 | goto error; | |
878 | } | |
879 | ||
880 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
881 | ret = LTTNG_DOMAIN_KERNEL; | |
882 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
883 | ret = LTTNG_DOMAIN_UST; | |
884 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
885 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
886 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
887 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
888 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
889 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
890 | } else { |
891 | goto error; | |
892 | } | |
893 | ||
894 | return ret; | |
895 | error: | |
896 | return -1; | |
897 | } | |
898 | ||
899 | static | |
900 | int get_buffer_type(xmlChar *buffer_type) | |
901 | { | |
902 | int ret; | |
903 | ||
904 | if (!buffer_type) { | |
905 | goto error; | |
906 | } | |
907 | ||
908 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
909 | ret = LTTNG_BUFFER_GLOBAL; | |
910 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
911 | ret = LTTNG_BUFFER_PER_UID; | |
912 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
913 | ret = LTTNG_BUFFER_PER_PID; | |
914 | } else { | |
915 | goto error; | |
916 | } | |
917 | ||
918 | return ret; | |
919 | error: | |
920 | return -1; | |
921 | } | |
922 | ||
923 | static | |
924 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
925 | { | |
926 | int ret; | |
927 | ||
928 | if (!overwrite_mode) { | |
929 | goto error; | |
930 | } | |
931 | ||
932 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
933 | ret = 1; | |
934 | } else if (!strcmp((char *) overwrite_mode, | |
935 | config_overwrite_mode_discard)) { | |
936 | ret = 0; | |
937 | } else { | |
938 | goto error; | |
939 | } | |
940 | ||
941 | return ret; | |
942 | error: | |
943 | return -1; | |
944 | } | |
945 | ||
946 | static | |
947 | int get_output_type(xmlChar *output_type) | |
948 | { | |
949 | int ret; | |
950 | ||
951 | if (!output_type) { | |
952 | goto error; | |
953 | } | |
954 | ||
955 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
956 | ret = LTTNG_EVENT_MMAP; | |
957 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
958 | ret = LTTNG_EVENT_SPLICE; | |
959 | } else { | |
960 | goto error; | |
961 | } | |
962 | ||
963 | return ret; | |
964 | error: | |
965 | return -1; | |
966 | } | |
967 | ||
968 | static | |
969 | int get_event_type(xmlChar *event_type) | |
970 | { | |
971 | int ret; | |
972 | ||
973 | if (!event_type) { | |
974 | goto error; | |
975 | } | |
976 | ||
977 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
978 | ret = LTTNG_EVENT_ALL; | |
979 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
980 | ret = LTTNG_EVENT_TRACEPOINT; | |
981 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
982 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
983 | } else if (!strcmp((char *) event_type, |
984 | config_event_type_userspace_probe)) { | |
985 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
986 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
987 | ret = LTTNG_EVENT_FUNCTION; | |
988 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 989 | config_event_type_function_entry)) { |
dcf266c0 JG |
990 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
991 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
992 | ret = LTTNG_EVENT_NOOP; | |
993 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
994 | ret = LTTNG_EVENT_SYSCALL; | |
995 | } else { | |
996 | goto error; | |
997 | } | |
998 | ||
999 | return ret; | |
1000 | error: | |
1001 | return -1; | |
1002 | } | |
1003 | ||
1004 | static | |
1005 | int get_loglevel_type(xmlChar *loglevel_type) | |
1006 | { | |
1007 | int ret; | |
1008 | ||
1009 | if (!loglevel_type) { | |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1014 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1015 | } else if (!strcmp((char *) loglevel_type, | |
1016 | config_loglevel_type_range)) { | |
1017 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1018 | } else if (!strcmp((char *) loglevel_type, | |
1019 | config_loglevel_type_single)) { | |
1020 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1021 | } else { | |
1022 | goto error; | |
1023 | } | |
1024 | ||
1025 | return ret; | |
1026 | error: | |
1027 | return -1; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Return the context type or -1 on error. | |
1032 | */ | |
1033 | static | |
1034 | int get_context_type(xmlChar *context_type) | |
1035 | { | |
1036 | int ret; | |
1037 | ||
1038 | if (!context_type) { | |
1039 | goto error; | |
1040 | } | |
1041 | ||
1042 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1043 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1044 | } else if (!strcmp((char *) context_type, | |
1045 | config_event_context_procname)) { | |
1046 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1047 | } else if (!strcmp((char *) context_type, | |
1048 | config_event_context_prio)) { | |
1049 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1050 | } else if (!strcmp((char *) context_type, | |
1051 | config_event_context_nice)) { | |
1052 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1053 | } else if (!strcmp((char *) context_type, | |
1054 | config_event_context_vpid)) { | |
1055 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1056 | } else if (!strcmp((char *) context_type, | |
1057 | config_event_context_tid)) { | |
1058 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1059 | } else if (!strcmp((char *) context_type, | |
1060 | config_event_context_vtid)) { | |
1061 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1062 | } else if (!strcmp((char *) context_type, | |
1063 | config_event_context_ppid)) { | |
1064 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1065 | } else if (!strcmp((char *) context_type, | |
1066 | config_event_context_vppid)) { | |
1067 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1068 | } else if (!strcmp((char *) context_type, | |
1069 | config_event_context_pthread_id)) { | |
1070 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1071 | } else if (!strcmp((char *) context_type, | |
1072 | config_event_context_hostname)) { | |
1073 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1074 | } else if (!strcmp((char *) context_type, | |
1075 | config_event_context_ip)) { | |
1076 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1077 | } else if (!strcmp((char *) context_type, |
1078 | config_event_context_interruptible)) { | |
1079 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1080 | } else if (!strcmp((char *) context_type, | |
1081 | config_event_context_preemptible)) { | |
1082 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1083 | } else if (!strcmp((char *) context_type, | |
1084 | config_event_context_need_reschedule)) { | |
1085 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1086 | } else if (!strcmp((char *) context_type, | |
1087 | config_event_context_migratable)) { | |
1088 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1089 | } else if (!strcmp((char *) context_type, |
1090 | config_event_context_callstack_user)) { | |
1091 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1092 | } else if (!strcmp((char *) context_type, | |
1093 | config_event_context_callstack_kernel)) { | |
1094 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1095 | } else if (!strcmp((char *) context_type, |
1096 | config_event_context_cgroup_ns)) { | |
1097 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1098 | } else if (!strcmp((char *) context_type, | |
1099 | config_event_context_ipc_ns)) { | |
1100 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1101 | } else if (!strcmp((char *) context_type, | |
1102 | config_event_context_mnt_ns)) { | |
1103 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1104 | } else if (!strcmp((char *) context_type, | |
1105 | config_event_context_net_ns)) { | |
1106 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1107 | } else if (!strcmp((char *) context_type, | |
1108 | config_event_context_pid_ns)) { | |
1109 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
1110 | } else if (!strcmp((char *) context_type, |
1111 | config_event_context_time_ns)) { | |
1112 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
1113 | } else if (!strcmp((char *) context_type, |
1114 | config_event_context_user_ns)) { | |
1115 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1116 | } else if (!strcmp((char *) context_type, | |
1117 | config_event_context_uts_ns)) { | |
1118 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1119 | } else if (!strcmp((char *) context_type, |
1120 | config_event_context_uid)) { | |
1121 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1122 | } else if (!strcmp((char *) context_type, | |
1123 | config_event_context_euid)) { | |
1124 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1125 | } else if (!strcmp((char *) context_type, | |
1126 | config_event_context_suid)) { | |
1127 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1128 | } else if (!strcmp((char *) context_type, | |
1129 | config_event_context_gid)) { | |
1130 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1131 | } else if (!strcmp((char *) context_type, | |
1132 | config_event_context_egid)) { | |
1133 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1134 | } else if (!strcmp((char *) context_type, | |
1135 | config_event_context_sgid)) { | |
1136 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1137 | } else if (!strcmp((char *) context_type, | |
1138 | config_event_context_vuid)) { | |
1139 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1140 | } else if (!strcmp((char *) context_type, | |
1141 | config_event_context_veuid)) { | |
1142 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1143 | } else if (!strcmp((char *) context_type, | |
1144 | config_event_context_vsuid)) { | |
1145 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1146 | } else if (!strcmp((char *) context_type, | |
1147 | config_event_context_vgid)) { | |
1148 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1149 | } else if (!strcmp((char *) context_type, | |
1150 | config_event_context_vegid)) { | |
1151 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1152 | } else if (!strcmp((char *) context_type, | |
1153 | config_event_context_vsgid)) { | |
1154 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1155 | } else { |
1156 | goto error; | |
1157 | } | |
1158 | ||
1159 | return ret; | |
1160 | error: | |
1161 | return -1; | |
1162 | } | |
1163 | ||
1164 | static | |
1165 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1166 | { | |
1167 | int ret; | |
1168 | xmlNodePtr node; | |
1169 | ||
1170 | for (node = xmlFirstElementChild(domain_node); node; | |
1171 | node = xmlNextElementSibling(node)) { | |
1172 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1173 | /* domain type */ | |
1174 | xmlChar *node_content = xmlNodeGetContent(node); | |
1175 | if (!node_content) { | |
1176 | ret = -LTTNG_ERR_NOMEM; | |
1177 | goto end; | |
1178 | } | |
1179 | ||
1180 | ret = get_domain_type(node_content); | |
1181 | free(node_content); | |
1182 | if (ret < 0) { | |
1183 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1184 | goto end; | |
1185 | } | |
1186 | ||
1187 | domain->type = ret; | |
1188 | } else if (!strcmp((const char *) node->name, | |
1189 | config_element_buffer_type)) { | |
1190 | /* buffer type */ | |
1191 | xmlChar *node_content = xmlNodeGetContent(node); | |
1192 | if (!node_content) { | |
1193 | ret = -LTTNG_ERR_NOMEM; | |
1194 | goto end; | |
1195 | } | |
1196 | ||
1197 | ret = get_buffer_type(node_content); | |
1198 | free(node_content); | |
1199 | if (ret < 0) { | |
1200 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1201 | goto end; | |
1202 | } | |
1203 | ||
1204 | domain->buf_type = ret; | |
1205 | } | |
1206 | } | |
1207 | ret = 0; | |
1208 | end: | |
1209 | return ret; | |
1210 | } | |
1211 | ||
1212 | static | |
1213 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1214 | char **data_uri) | |
1215 | { | |
1216 | xmlNodePtr node; | |
1217 | ||
1218 | for (node = xmlFirstElementChild(net_output_node); node; | |
1219 | node = xmlNextElementSibling(node)) { | |
1220 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1221 | /* control_uri */ | |
1222 | *control_uri = (char *) xmlNodeGetContent(node); | |
1223 | if (!*control_uri) { | |
1224 | break; | |
1225 | } | |
1226 | } else { | |
1227 | /* data_uri */ | |
1228 | *data_uri = (char *) xmlNodeGetContent(node); | |
1229 | if (!*data_uri) { | |
1230 | break; | |
1231 | } | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1236 | } | |
1237 | ||
1238 | static | |
1239 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1240 | struct consumer_output *output) | |
1241 | { | |
1242 | int ret; | |
1243 | xmlNodePtr node; | |
1244 | ||
1245 | assert(output); | |
1246 | ||
1247 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1248 | node = xmlNextElementSibling(node)) { | |
1249 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1250 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1251 | ||
1252 | /* enabled */ | |
1253 | if (!enabled_str) { | |
1254 | ret = -LTTNG_ERR_NOMEM; | |
1255 | goto end; | |
1256 | } | |
1257 | ||
1258 | ret = parse_bool(enabled_str, &output->enabled); | |
1259 | free(enabled_str); | |
1260 | if (ret) { | |
1261 | goto end; | |
1262 | } | |
1263 | } else { | |
1264 | xmlNodePtr output_type_node; | |
1265 | ||
1266 | /* destination */ | |
1267 | output_type_node = xmlFirstElementChild(node); | |
1268 | if (!output_type_node) { | |
1269 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1270 | goto end; | |
1271 | } | |
1272 | ||
1273 | if (!strcmp((const char *) output_type_node->name, | |
1274 | config_element_path)) { | |
1275 | /* path */ | |
1276 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1277 | if (!output->path) { | |
1278 | ret = -LTTNG_ERR_NOMEM; | |
1279 | goto end; | |
1280 | } | |
1281 | } else { | |
1282 | /* net_output */ | |
1283 | ret = get_net_output_uris(output_type_node, | |
1284 | &output->control_uri, &output->data_uri); | |
1285 | if (ret) { | |
1286 | goto end; | |
1287 | } | |
1288 | } | |
1289 | } | |
1290 | } | |
1291 | ret = 0; | |
1292 | ||
1293 | end: | |
1294 | if (ret) { | |
1295 | free(output->path); | |
1296 | free(output->control_uri); | |
1297 | free(output->data_uri); | |
1298 | memset(output, 0, sizeof(struct consumer_output)); | |
1299 | } | |
1300 | return ret; | |
1301 | } | |
1302 | ||
1303 | static | |
95681498 JG |
1304 | int create_session_net_output(const char *name, const char *control_uri, |
1305 | const char *data_uri) | |
dcf266c0 JG |
1306 | { |
1307 | int ret; | |
1308 | struct lttng_handle *handle; | |
1309 | const char *uri = NULL; | |
1310 | ||
1311 | assert(name); | |
dcf266c0 | 1312 | |
95681498 | 1313 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1314 | if (!handle) { |
1315 | ret = -LTTNG_ERR_NOMEM; | |
1316 | goto end; | |
1317 | } | |
1318 | ||
1319 | if (!control_uri || !data_uri) { | |
1320 | uri = control_uri ? control_uri : data_uri; | |
1321 | control_uri = uri; | |
1322 | data_uri = uri; | |
1323 | } | |
1324 | ||
1325 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1326 | lttng_destroy_handle(handle); | |
1327 | end: | |
1328 | return ret; | |
1329 | } | |
1330 | ||
1331 | static | |
1b08cbce JR |
1332 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1333 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1334 | { |
1335 | int ret; | |
1336 | xmlNodePtr node = NULL; | |
1337 | xmlNodePtr snapshot_output_list_node; | |
1338 | xmlNodePtr snapshot_output_node; | |
1339 | ||
1340 | assert(session_name); | |
1341 | ||
1342 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1343 | if (ret) { | |
1344 | goto end; | |
1345 | } | |
1346 | ||
1347 | if (!output_node) { | |
1348 | goto end; | |
1349 | } | |
1350 | ||
1351 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1352 | ||
1353 | /* Parse and create snapshot outputs */ | |
1354 | ||
1355 | for (snapshot_output_node = | |
1356 | xmlFirstElementChild(snapshot_output_list_node); | |
1357 | snapshot_output_node; snapshot_output_node = | |
1358 | xmlNextElementSibling(snapshot_output_node)) { | |
1359 | char *name = NULL; | |
1360 | uint64_t max_size = UINT64_MAX; | |
1361 | struct consumer_output output = { 0 }; | |
1362 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1363 | const char *control_uri = NULL; |
1364 | const char *data_uri = NULL; | |
1365 | const char *path = NULL; | |
dcf266c0 JG |
1366 | |
1367 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1368 | node = xmlNextElementSibling(node)) { | |
1369 | if (!strcmp((const char *) node->name, | |
1370 | config_element_name)) { | |
1371 | /* name */ | |
1372 | name = (char *) xmlNodeGetContent(node); | |
1373 | if (!name) { | |
1374 | ret = -LTTNG_ERR_NOMEM; | |
1375 | goto error_snapshot_output; | |
1376 | } | |
1377 | } else if (!strcmp((const char *) node->name, | |
1378 | config_element_max_size)) { | |
1379 | xmlChar *content = xmlNodeGetContent(node); | |
1380 | ||
1381 | /* max_size */ | |
1382 | if (!content) { | |
1383 | ret = -LTTNG_ERR_NOMEM; | |
1384 | goto error_snapshot_output; | |
1385 | } | |
1386 | ret = parse_uint(content, &max_size); | |
1387 | free(content); | |
1388 | if (ret) { | |
1389 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1390 | goto error_snapshot_output; | |
1391 | } | |
1392 | } else { | |
1393 | /* consumer_output */ | |
1394 | ret = process_consumer_output(node, &output); | |
1395 | if (ret) { | |
1396 | goto error_snapshot_output; | |
1397 | } | |
1398 | } | |
1399 | } | |
1400 | ||
21a3f144 JR |
1401 | control_uri = output.control_uri; |
1402 | data_uri = output.data_uri; | |
1403 | path = output.path; | |
1404 | ||
1b08cbce JR |
1405 | if (overrides) { |
1406 | if (overrides->path_url) { | |
1b08cbce | 1407 | path = overrides->path_url; |
21a3f144 JR |
1408 | /* Control/data_uri are null */ |
1409 | control_uri = NULL; | |
1410 | data_uri = NULL; | |
1b08cbce JR |
1411 | } else { |
1412 | if (overrides->ctrl_url) { | |
1b08cbce | 1413 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1414 | /* path is null */ |
1415 | path = NULL; | |
1b08cbce JR |
1416 | } |
1417 | if (overrides->data_url) { | |
1b08cbce | 1418 | data_uri = overrides->data_url; |
21a3f144 JR |
1419 | /* path is null */ |
1420 | path = NULL; | |
1b08cbce JR |
1421 | } |
1422 | } | |
1b08cbce JR |
1423 | } |
1424 | ||
dcf266c0 JG |
1425 | snapshot_output = lttng_snapshot_output_create(); |
1426 | if (!snapshot_output) { | |
1427 | ret = -LTTNG_ERR_NOMEM; | |
1428 | goto error_snapshot_output; | |
1429 | } | |
1430 | ||
1431 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1432 | if (ret) { | |
1433 | goto error_snapshot_output; | |
1434 | } | |
1435 | ||
1436 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1437 | if (ret) { | |
1438 | goto error_snapshot_output; | |
1439 | } | |
1440 | ||
1b08cbce JR |
1441 | if (path) { |
1442 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1443 | snapshot_output); |
1444 | if (ret) { | |
1445 | goto error_snapshot_output; | |
1446 | } | |
1447 | } else { | |
1b08cbce JR |
1448 | if (control_uri) { |
1449 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1450 | snapshot_output); |
1451 | if (ret) { | |
1452 | goto error_snapshot_output; | |
1453 | } | |
1454 | } | |
1455 | ||
1b08cbce JR |
1456 | if (data_uri) { |
1457 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1458 | snapshot_output); |
1459 | if (ret) { | |
1460 | goto error_snapshot_output; | |
1461 | } | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1466 | error_snapshot_output: | |
1467 | free(name); | |
1468 | free(output.path); | |
1469 | free(output.control_uri); | |
1470 | free(output.data_uri); | |
1471 | lttng_snapshot_output_destroy(snapshot_output); | |
1472 | if (ret) { | |
1473 | goto end; | |
1474 | } | |
1475 | } | |
1476 | end: | |
1477 | return ret; | |
1478 | } | |
1479 | ||
1480 | static | |
1481 | int create_session(const char *name, | |
dcf266c0 | 1482 | xmlNodePtr output_node, |
1b08cbce JR |
1483 | uint64_t live_timer_interval, |
1484 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1485 | { |
1486 | int ret; | |
1487 | struct consumer_output output = { 0 }; | |
1488 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1489 | const char *control_uri = NULL; |
1490 | const char *data_uri = NULL; | |
1491 | const char *path = NULL; | |
dcf266c0 JG |
1492 | |
1493 | assert(name); | |
dcf266c0 JG |
1494 | |
1495 | if (output_node) { | |
1496 | consumer_output_node = xmlFirstElementChild(output_node); | |
1497 | if (!consumer_output_node) { | |
1498 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1499 | goto end; | |
1500 | } | |
1501 | ||
1502 | if (strcmp((const char *) consumer_output_node->name, | |
1503 | config_element_consumer_output)) { | |
1504 | WARN("Invalid output type, expected %s node", | |
1505 | config_element_consumer_output); | |
1506 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1507 | goto end; | |
1508 | } | |
1509 | ||
1510 | ret = process_consumer_output(consumer_output_node, &output); | |
1511 | if (ret) { | |
1512 | goto end; | |
1513 | } | |
1514 | } | |
1515 | ||
21a3f144 JR |
1516 | control_uri = output.control_uri; |
1517 | data_uri = output.data_uri; | |
1518 | path = output.path; | |
1519 | ||
1b08cbce JR |
1520 | /* Check for override and apply them */ |
1521 | if (overrides) { | |
1522 | if (overrides->path_url) { | |
1b08cbce | 1523 | path = overrides->path_url; |
21a3f144 JR |
1524 | /* control/data_uri are null */; |
1525 | control_uri = NULL; | |
1526 | data_uri = NULL; | |
1b08cbce JR |
1527 | } else { |
1528 | if (overrides->ctrl_url) { | |
1b08cbce | 1529 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1530 | /* path is null */ |
1531 | path = NULL; | |
1b08cbce JR |
1532 | } |
1533 | if (overrides->data_url) { | |
1b08cbce | 1534 | data_uri = overrides->data_url; |
21a3f144 JR |
1535 | /* path is null */ |
1536 | path = NULL; | |
1b08cbce JR |
1537 | } |
1538 | } | |
1b08cbce JR |
1539 | } |
1540 | ||
21a3f144 | 1541 | |
1b08cbce | 1542 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1543 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1544 | goto end; | |
1545 | } | |
1546 | ||
1b08cbce | 1547 | if (control_uri || data_uri) { |
dcf266c0 JG |
1548 | /* network destination */ |
1549 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1550 | /* |
1551 | * URLs are provided for sure since the test above make sure that | |
1552 | * with a live timer the data and control URIs are provided. So, | |
1553 | * NULL is passed here and will be set right after. | |
1554 | */ | |
1555 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1556 | } else { |
1557 | ret = lttng_create_session(name, NULL); | |
1558 | } | |
1559 | if (ret) { | |
1560 | goto end; | |
1561 | } | |
1562 | ||
1b08cbce | 1563 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1564 | if (ret) { |
1565 | goto end; | |
dcf266c0 | 1566 | } |
95681498 | 1567 | |
dcf266c0 JG |
1568 | } else { |
1569 | /* either local output or no output */ | |
1b08cbce | 1570 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1571 | if (ret) { |
1572 | goto end; | |
1573 | } | |
1574 | } | |
1575 | end: | |
1576 | free(output.path); | |
1577 | free(output.control_uri); | |
1578 | free(output.data_uri); | |
1579 | return ret; | |
1580 | } | |
c1e83fb4 FD |
1581 | |
1582 | static | |
1583 | struct lttng_userspace_probe_location * | |
1584 | process_userspace_probe_function_attribute_node( | |
1585 | xmlNodePtr attribute_node) | |
1586 | { | |
c1e83fb4 | 1587 | xmlNodePtr function_attribute_node; |
717d2dba | 1588 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1589 | struct lttng_userspace_probe_location *location = NULL; |
1590 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1591 | ||
1592 | /* | |
1593 | * Process userspace probe location function attributes. The order of | |
1594 | * the fields are not guaranteed so we need to iterate over all fields | |
1595 | * and check at the end if everything we need for this location type is | |
1596 | * there. | |
1597 | */ | |
1598 | for (function_attribute_node = | |
1599 | xmlFirstElementChild(attribute_node); | |
1600 | function_attribute_node; | |
1601 | function_attribute_node = xmlNextElementSibling( | |
1602 | function_attribute_node)) { | |
1603 | /* Handle function name, binary path and lookup method. */ | |
1604 | if (!strcmp((const char *) function_attribute_node->name, | |
1605 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1606 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1607 | if (!function_name) { |
c1e83fb4 FD |
1608 | goto error; |
1609 | } | |
1610 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1611 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1612 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1613 | if (!binary_path) { |
c1e83fb4 FD |
1614 | goto error; |
1615 | } | |
1616 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1617 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1618 | char *lookup_method_name; |
c1e83fb4 | 1619 | |
717d2dba JG |
1620 | lookup_method_name = (char *) xmlNodeGetContent( |
1621 | function_attribute_node); | |
c1e83fb4 | 1622 | if (!lookup_method_name) { |
c1e83fb4 FD |
1623 | goto error; |
1624 | } | |
1625 | ||
1626 | /* | |
1627 | * function_default lookup method defaults to | |
1628 | * function_elf lookup method at the moment. | |
1629 | */ | |
1630 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1631 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1632 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1633 | if (!lookup_method) { | |
1634 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1635 | } |
1636 | } else { | |
717d2dba JG |
1637 | WARN("Unknown function lookup method"); |
1638 | } | |
1639 | ||
1640 | free(lookup_method_name); | |
1641 | if (!lookup_method) { | |
c1e83fb4 FD |
1642 | goto error; |
1643 | } | |
1644 | } else { | |
1645 | goto error; | |
1646 | } | |
1647 | ||
1648 | /* Check if all the necessary fields were found. */ | |
1649 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1650 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1651 | location = |
1652 | lttng_userspace_probe_location_function_create( | |
1653 | binary_path, function_name, | |
1654 | lookup_method); | |
717d2dba JG |
1655 | lookup_method = NULL; |
1656 | goto error; | |
c1e83fb4 FD |
1657 | } |
1658 | } | |
1659 | error: | |
717d2dba | 1660 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1661 | free(binary_path); |
1662 | free(function_name); | |
c1e83fb4 FD |
1663 | return location; |
1664 | } | |
1665 | ||
1666 | static | |
1667 | struct lttng_userspace_probe_location * | |
1668 | process_userspace_probe_tracepoint_attribute_node( | |
1669 | xmlNodePtr attribute_node) | |
1670 | { | |
c1e83fb4 | 1671 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1672 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1673 | struct lttng_userspace_probe_location *location = NULL; | |
1674 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1675 | ||
1676 | /* | |
1677 | * Process userspace probe location tracepoint attributes. The order of | |
1678 | * the fields are not guaranteed so we need to iterate over all fields | |
1679 | * and check at the end if everything we need for this location type is | |
1680 | * there. | |
1681 | */ | |
1682 | for (tracepoint_attribute_node = | |
1683 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1684 | tracepoint_attribute_node = xmlNextElementSibling( | |
1685 | tracepoint_attribute_node)) { | |
1686 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1687 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1688 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1689 | if (!probe_name) { |
c1e83fb4 FD |
1690 | goto error; |
1691 | } | |
1692 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1693 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1694 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1695 | if (!provider_name) { |
c1e83fb4 FD |
1696 | goto error; |
1697 | } | |
1698 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1699 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1700 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1701 | if (!binary_path) { |
c1e83fb4 FD |
1702 | goto error; |
1703 | } | |
1704 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1705 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1706 | char *lookup_method_name; |
c1e83fb4 | 1707 | |
717d2dba JG |
1708 | lookup_method_name = (char *) xmlNodeGetContent( |
1709 | tracepoint_attribute_node); | |
c1e83fb4 | 1710 | if (!lookup_method_name) { |
c1e83fb4 FD |
1711 | goto error; |
1712 | } | |
1713 | ||
1714 | if (!strcmp(lookup_method_name, | |
1715 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1716 | lookup_method = | |
1717 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1718 | if (!lookup_method) { | |
1719 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1720 | } |
1721 | } else { | |
717d2dba JG |
1722 | WARN("Unknown tracepoint lookup method"); |
1723 | } | |
1724 | ||
1725 | free(lookup_method_name); | |
1726 | if (!lookup_method) { | |
c1e83fb4 FD |
1727 | goto error; |
1728 | } | |
1729 | } else { | |
717d2dba | 1730 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1731 | goto error; |
1732 | } | |
1733 | ||
1734 | /* Check if all the necessary fields were found. */ | |
1735 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1736 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1737 | location = |
1738 | lttng_userspace_probe_location_tracepoint_create( | |
1739 | binary_path, provider_name, | |
1740 | probe_name, lookup_method); | |
6bd61b96 | 1741 | lookup_method = NULL; |
717d2dba | 1742 | goto error; |
c1e83fb4 FD |
1743 | } |
1744 | } | |
1745 | error: | |
717d2dba | 1746 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1747 | free(binary_path); |
c1e83fb4 | 1748 | free(provider_name); |
717d2dba | 1749 | free(probe_name); |
c1e83fb4 FD |
1750 | return location; |
1751 | } | |
1752 | ||
dcf266c0 JG |
1753 | static |
1754 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1755 | struct lttng_event_probe_attr *attr) | |
1756 | { | |
1757 | int ret; | |
1758 | ||
1759 | assert(probe_attribute_node); | |
1760 | assert(attr); | |
1761 | ||
1762 | if (!strcmp((const char *) probe_attribute_node->name, | |
1763 | config_element_address)) { | |
1764 | xmlChar *content; | |
1765 | uint64_t addr = 0; | |
1766 | ||
1767 | /* addr */ | |
1768 | content = xmlNodeGetContent(probe_attribute_node); | |
1769 | if (!content) { | |
1770 | ret = -LTTNG_ERR_NOMEM; | |
1771 | goto end; | |
1772 | } | |
1773 | ||
1774 | ret = parse_uint(content, &addr); | |
1775 | free(content); | |
1776 | if (ret) { | |
1777 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1778 | goto end; | |
1779 | } | |
1780 | ||
1781 | attr->addr = addr; | |
1782 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1783 | config_element_offset)) { | |
1784 | xmlChar *content; | |
1785 | uint64_t offset = 0; | |
1786 | ||
1787 | /* offset */ | |
1788 | content = xmlNodeGetContent(probe_attribute_node); | |
1789 | if (!content) { | |
1790 | ret = -LTTNG_ERR_NOMEM; | |
1791 | goto end; | |
1792 | } | |
1793 | ||
1794 | ret = parse_uint(content, &offset); | |
1795 | free(content); | |
1796 | if (ret) { | |
1797 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1798 | goto end; | |
1799 | } | |
1800 | ||
1801 | attr->offset = offset; | |
1802 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1803 | config_element_symbol_name)) { | |
1804 | xmlChar *content; | |
dcf266c0 JG |
1805 | |
1806 | /* symbol_name */ | |
1807 | content = xmlNodeGetContent(probe_attribute_node); | |
1808 | if (!content) { | |
1809 | ret = -LTTNG_ERR_NOMEM; | |
1810 | goto end; | |
1811 | } | |
1812 | ||
d2e67842 JG |
1813 | ret = lttng_strncpy(attr->symbol_name, |
1814 | (const char *) content, | |
1815 | LTTNG_SYMBOL_NAME_LEN); | |
1816 | if (ret == -1) { | |
1817 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1818 | (const char *) content, | |
1819 | strlen((const char *) content), | |
1820 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1821 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1822 | free(content); | |
1823 | goto end; | |
1824 | } | |
dcf266c0 JG |
1825 | free(content); |
1826 | } | |
1827 | ret = 0; | |
1828 | end: | |
1829 | return ret; | |
1830 | } | |
1831 | ||
1832 | static | |
1833 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1834 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1835 | { |
d7b645e2 | 1836 | int ret = 0, i; |
dcf266c0 | 1837 | xmlNodePtr node; |
91744e14 | 1838 | struct lttng_event *event; |
dcf266c0 JG |
1839 | char **exclusions = NULL; |
1840 | unsigned long exclusion_count = 0; | |
1841 | char *filter_expression = NULL; | |
1842 | ||
1843 | assert(event_node); | |
1844 | assert(handle); | |
1845 | assert(channel_name); | |
1846 | ||
91744e14 FD |
1847 | event = lttng_event_create(); |
1848 | if (!event) { | |
1849 | ret = -LTTNG_ERR_NOMEM; | |
1850 | goto end; | |
1851 | } | |
dcf266c0 | 1852 | |
f40eba3d JG |
1853 | /* Initialize default log level which varies by domain */ |
1854 | switch (handle->domain.type) | |
1855 | { | |
1856 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1857 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1858 | break; |
1859 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1860 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1861 | break; |
1862 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1863 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1864 | break; |
1865 | case LTTNG_DOMAIN_UST: | |
1866 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1867 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1868 | break; |
1869 | default: | |
1870 | assert(0); | |
1871 | } | |
1872 | ||
dcf266c0 JG |
1873 | for (node = xmlFirstElementChild(event_node); node; |
1874 | node = xmlNextElementSibling(node)) { | |
1875 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1876 | xmlChar *content; | |
dcf266c0 JG |
1877 | |
1878 | /* name */ | |
1879 | content = xmlNodeGetContent(node); | |
1880 | if (!content) { | |
1881 | ret = -LTTNG_ERR_NOMEM; | |
1882 | goto end; | |
1883 | } | |
1884 | ||
91744e14 | 1885 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1886 | (const char *) content, |
1887 | LTTNG_SYMBOL_NAME_LEN); | |
1888 | if (ret == -1) { | |
1889 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1890 | (const char *) content, | |
1891 | strlen((const char *) content), | |
1892 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1893 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1894 | free(content); | |
1895 | goto end; | |
1896 | } | |
dcf266c0 JG |
1897 | free(content); |
1898 | } else if (!strcmp((const char *) node->name, | |
1899 | config_element_enabled)) { | |
1900 | xmlChar *content = xmlNodeGetContent(node); | |
1901 | ||
1902 | /* enabled */ | |
1903 | if (!content) { | |
1904 | ret = -LTTNG_ERR_NOMEM; | |
1905 | goto end; | |
1906 | } | |
1907 | ||
91744e14 | 1908 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1909 | free(content); |
1910 | if (ret) { | |
1911 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1912 | goto end; | |
1913 | } | |
1914 | } else if (!strcmp((const char *) node->name, | |
1915 | config_element_type)) { | |
1916 | xmlChar *content = xmlNodeGetContent(node); | |
1917 | ||
1918 | /* type */ | |
1919 | if (!content) { | |
1920 | ret = -LTTNG_ERR_NOMEM; | |
1921 | goto end; | |
1922 | } | |
1923 | ||
1924 | ret = get_event_type(content); | |
1925 | free(content); | |
1926 | if (ret < 0) { | |
1927 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1928 | goto end; | |
1929 | } | |
1930 | ||
91744e14 | 1931 | event->type = ret; |
dcf266c0 JG |
1932 | } else if (!strcmp((const char *) node->name, |
1933 | config_element_loglevel_type)) { | |
1934 | xmlChar *content = xmlNodeGetContent(node); | |
1935 | ||
1936 | /* loglevel_type */ | |
1937 | if (!content) { | |
1938 | ret = -LTTNG_ERR_NOMEM; | |
1939 | goto end; | |
1940 | } | |
1941 | ||
1942 | ret = get_loglevel_type(content); | |
1943 | free(content); | |
1944 | if (ret < 0) { | |
1945 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1946 | goto end; | |
1947 | } | |
1948 | ||
91744e14 | 1949 | event->loglevel_type = ret; |
dcf266c0 JG |
1950 | } else if (!strcmp((const char *) node->name, |
1951 | config_element_loglevel)) { | |
1952 | xmlChar *content; | |
1953 | int64_t loglevel = 0; | |
1954 | ||
1955 | /* loglevel */ | |
1956 | content = xmlNodeGetContent(node); | |
1957 | if (!content) { | |
1958 | ret = -LTTNG_ERR_NOMEM; | |
1959 | goto end; | |
1960 | } | |
1961 | ||
1962 | ret = parse_int(content, &loglevel); | |
1963 | free(content); | |
1964 | if (ret) { | |
1965 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1966 | goto end; | |
1967 | } | |
1968 | ||
1969 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1970 | WARN("loglevel out of range."); | |
1971 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1972 | goto end; | |
1973 | } | |
1974 | ||
91744e14 | 1975 | event->loglevel = loglevel; |
dcf266c0 JG |
1976 | } else if (!strcmp((const char *) node->name, |
1977 | config_element_filter)) { | |
1978 | xmlChar *content = | |
1979 | xmlNodeGetContent(node); | |
1980 | ||
1981 | /* filter */ | |
1982 | if (!content) { | |
1983 | ret = -LTTNG_ERR_NOMEM; | |
1984 | goto end; | |
1985 | } | |
1986 | ||
02d8ac3d | 1987 | free(filter_expression); |
dcf266c0 JG |
1988 | filter_expression = strdup((char *) content); |
1989 | free(content); | |
1990 | if (!filter_expression) { | |
1991 | ret = -LTTNG_ERR_NOMEM; | |
1992 | goto end; | |
1993 | } | |
1994 | } else if (!strcmp((const char *) node->name, | |
1995 | config_element_exclusions)) { | |
1996 | xmlNodePtr exclusion_node; | |
1997 | int exclusion_index = 0; | |
1998 | ||
1999 | /* exclusions */ | |
2000 | if (exclusions) { | |
2001 | /* | |
2002 | * Exclusions has already been initialized, | |
2003 | * invalid file. | |
2004 | */ | |
2005 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2006 | goto end; | |
2007 | } | |
2008 | ||
2009 | exclusion_count = xmlChildElementCount(node); | |
2010 | if (!exclusion_count) { | |
2011 | continue; | |
2012 | } | |
2013 | ||
2014 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
2015 | if (!exclusions) { | |
2016 | exclusion_count = 0; | |
2017 | ret = -LTTNG_ERR_NOMEM; | |
2018 | goto end; | |
2019 | } | |
2020 | ||
2021 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2022 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2023 | xmlChar *content = | |
2024 | xmlNodeGetContent(exclusion_node); | |
2025 | ||
2026 | if (!content) { | |
2027 | ret = -LTTNG_ERR_NOMEM; | |
2028 | goto end; | |
2029 | } | |
2030 | ||
2031 | exclusions[exclusion_index] = strdup((const char *) content); | |
2032 | free(content); | |
2033 | if (!exclusions[exclusion_index]) { | |
2034 | ret = -LTTNG_ERR_NOMEM; | |
2035 | goto end; | |
2036 | } | |
2037 | exclusion_index++; | |
2038 | } | |
2039 | ||
91744e14 | 2040 | event->exclusion = 1; |
dcf266c0 JG |
2041 | } else if (!strcmp((const char *) node->name, |
2042 | config_element_attributes)) { | |
2043 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2044 | ||
2045 | /* attributes */ | |
2046 | if (!attribute_node) { | |
2047 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2048 | goto end; | |
2049 | } | |
2050 | ||
c1e83fb4 | 2051 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2052 | config_element_probe_attributes)) { |
2053 | xmlNodePtr probe_attribute_node; | |
2054 | ||
2055 | /* probe_attributes */ | |
2056 | for (probe_attribute_node = | |
2057 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2058 | probe_attribute_node = xmlNextElementSibling( | |
2059 | probe_attribute_node)) { | |
2060 | ||
2061 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2062 | &event->attr.probe); |
dcf266c0 JG |
2063 | if (ret) { |
2064 | goto end; | |
2065 | } | |
2066 | } | |
c1e83fb4 FD |
2067 | } else if (!strcmp((const char *) attribute_node->name, |
2068 | config_element_function_attributes)) { | |
dcf266c0 JG |
2069 | size_t sym_len; |
2070 | xmlChar *content; | |
2071 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2072 | ||
2073 | /* function_attributes */ | |
2074 | content = xmlNodeGetContent(symbol_node); | |
2075 | if (!content) { | |
2076 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2077 | goto end; | |
2078 | } | |
2079 | ||
2080 | sym_len = strlen((char *) content); | |
2081 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2082 | WARN("Function name too long."); | |
2083 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2084 | free(content); | |
2085 | goto end; | |
2086 | } | |
2087 | ||
d2e67842 | 2088 | ret = lttng_strncpy( |
91744e14 | 2089 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2090 | (char *) content, sym_len); |
2091 | if (ret == -1) { | |
2092 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2093 | free(content); | |
2094 | goto end; | |
2095 | } | |
dcf266c0 | 2096 | free(content); |
c1e83fb4 FD |
2097 | } else if (!strcmp((const char *) attribute_node->name, |
2098 | config_element_userspace_probe_tracepoint_attributes)) { | |
2099 | struct lttng_userspace_probe_location *location; | |
2100 | ||
2101 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2102 | if (!location) { | |
2103 | WARN("Error processing userspace probe tracepoint attribute"); | |
2104 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2105 | goto end; | |
2106 | } | |
2107 | ret = lttng_event_set_userspace_probe_location( | |
2108 | event, location); | |
2109 | if (ret) { | |
2110 | WARN("Error setting userspace probe location field"); | |
2111 | lttng_userspace_probe_location_destroy( | |
2112 | location); | |
2113 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2114 | goto end; | |
2115 | } | |
2116 | } else if (!strcmp((const char *) attribute_node->name, | |
2117 | config_element_userspace_probe_function_attributes)) { | |
2118 | struct lttng_userspace_probe_location *location; | |
2119 | ||
2120 | location = | |
2121 | process_userspace_probe_function_attribute_node( | |
2122 | attribute_node); | |
2123 | if (!location) { | |
2124 | WARN("Error processing userspace probe function attribute"); | |
2125 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2126 | goto end; | |
2127 | } | |
2128 | ||
2129 | ret = lttng_event_set_userspace_probe_location( | |
2130 | event, location); | |
2131 | if (ret) { | |
2132 | WARN("Error setting userspace probe location field"); | |
2133 | lttng_userspace_probe_location_destroy( | |
2134 | location); | |
2135 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2136 | goto end; | |
2137 | } | |
2138 | } else { | |
2139 | /* Unknown event attribute. */ | |
2140 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2141 | goto end; | |
dcf266c0 JG |
2142 | } |
2143 | } | |
2144 | } | |
2145 | ||
91744e14 FD |
2146 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2147 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2148 | filter_expression, exclusion_count, exclusions); |
2149 | if (ret < 0) { | |
91744e14 | 2150 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2151 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2152 | goto end; | |
2153 | } | |
065321e9 | 2154 | } |
d2e67842 | 2155 | ret = 0; |
dcf266c0 JG |
2156 | end: |
2157 | for (i = 0; i < exclusion_count; i++) { | |
2158 | free(exclusions[i]); | |
2159 | } | |
2160 | ||
b33f872b | 2161 | lttng_event_destroy(event); |
dcf266c0 JG |
2162 | free(exclusions); |
2163 | free(filter_expression); | |
2164 | return ret; | |
2165 | } | |
2166 | ||
2167 | static | |
2168 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2169 | const char *channel_name) | |
2170 | { | |
2171 | int ret = 0; | |
d7b645e2 | 2172 | struct lttng_event event; |
dcf266c0 JG |
2173 | xmlNodePtr node; |
2174 | ||
2175 | assert(events_node); | |
2176 | assert(handle); | |
2177 | assert(channel_name); | |
2178 | ||
2179 | for (node = xmlFirstElementChild(events_node); node; | |
2180 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2181 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2182 | if (ret) { |
2183 | goto end; | |
2184 | } | |
2185 | } | |
d7b645e2 JR |
2186 | |
2187 | /* | |
2188 | * Disable all events to enable only the necessary events. | |
2189 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2190 | * force this approach. | |
2191 | */ | |
2192 | memset(&event, 0, sizeof(event)); | |
2193 | event.loglevel = -1; | |
2194 | event.type = LTTNG_EVENT_ALL; | |
2195 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2196 | if (ret) { | |
2197 | goto end; | |
2198 | } | |
2199 | ||
2200 | for (node = xmlFirstElementChild(events_node); node; | |
2201 | node = xmlNextElementSibling(node)) { | |
2202 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2203 | if (ret) { | |
2204 | goto end; | |
2205 | } | |
2206 | } | |
2207 | ||
dcf266c0 JG |
2208 | end: |
2209 | return ret; | |
2210 | } | |
2211 | ||
2212 | static | |
2213 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2214 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2215 | xmlNodePtr *events_node) | |
2216 | { | |
2217 | int ret; | |
2218 | ||
2219 | assert(attr_node); | |
2220 | assert(channel); | |
2221 | assert(contexts_node); | |
2222 | assert(events_node); | |
2223 | ||
2224 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2225 | xmlChar *content; | |
dcf266c0 JG |
2226 | |
2227 | /* name */ | |
2228 | content = xmlNodeGetContent(attr_node); | |
2229 | if (!content) { | |
2230 | ret = -LTTNG_ERR_NOMEM; | |
2231 | goto end; | |
2232 | } | |
2233 | ||
d2e67842 JG |
2234 | ret = lttng_strncpy(channel->name, |
2235 | (const char *) content, | |
2236 | LTTNG_SYMBOL_NAME_LEN); | |
2237 | if (ret == -1) { | |
2238 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2239 | (const char *) content, | |
2240 | strlen((const char *) content), | |
2241 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2242 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2243 | free(content); | |
2244 | goto end; | |
2245 | } | |
dcf266c0 JG |
2246 | free(content); |
2247 | } else if (!strcmp((const char *) attr_node->name, | |
2248 | config_element_enabled)) { | |
2249 | xmlChar *content; | |
2250 | int enabled; | |
2251 | ||
2252 | /* enabled */ | |
2253 | content = xmlNodeGetContent(attr_node); | |
2254 | if (!content) { | |
2255 | ret = -LTTNG_ERR_NOMEM; | |
2256 | goto end; | |
2257 | } | |
2258 | ||
2259 | ret = parse_bool(content, &enabled); | |
2260 | free(content); | |
2261 | if (ret) { | |
2262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2263 | goto end; | |
2264 | } | |
2265 | ||
2266 | channel->enabled = enabled; | |
2267 | } else if (!strcmp((const char *) attr_node->name, | |
2268 | config_element_overwrite_mode)) { | |
2269 | xmlChar *content; | |
2270 | ||
2271 | /* overwrite_mode */ | |
2272 | content = xmlNodeGetContent(attr_node); | |
2273 | if (!content) { | |
2274 | ret = -LTTNG_ERR_NOMEM; | |
2275 | goto end; | |
2276 | } | |
2277 | ||
2278 | ret = get_overwrite_mode(content); | |
2279 | free(content); | |
2280 | if (ret < 0) { | |
2281 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2282 | goto end; | |
2283 | } | |
2284 | ||
2285 | channel->attr.overwrite = ret; | |
2286 | } else if (!strcmp((const char *) attr_node->name, | |
2287 | config_element_subbuf_size)) { | |
2288 | xmlChar *content; | |
2289 | ||
2290 | /* subbuffer_size */ | |
2291 | content = xmlNodeGetContent(attr_node); | |
2292 | if (!content) { | |
2293 | ret = -LTTNG_ERR_NOMEM; | |
2294 | goto end; | |
2295 | } | |
2296 | ||
2297 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2298 | free(content); | |
2299 | if (ret) { | |
2300 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2301 | goto end; | |
2302 | } | |
2303 | } else if (!strcmp((const char *) attr_node->name, | |
2304 | config_element_num_subbuf)) { | |
2305 | xmlChar *content; | |
2306 | ||
2307 | /* subbuffer_count */ | |
2308 | content = xmlNodeGetContent(attr_node); | |
2309 | if (!content) { | |
2310 | ret = -LTTNG_ERR_NOMEM; | |
2311 | goto end; | |
2312 | } | |
2313 | ||
2314 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2315 | free(content); | |
2316 | if (ret) { | |
2317 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2318 | goto end; | |
2319 | } | |
2320 | } else if (!strcmp((const char *) attr_node->name, | |
2321 | config_element_switch_timer_interval)) { | |
2322 | xmlChar *content; | |
2323 | uint64_t switch_timer_interval = 0; | |
2324 | ||
2325 | /* switch_timer_interval */ | |
2326 | content = xmlNodeGetContent(attr_node); | |
2327 | if (!content) { | |
2328 | ret = -LTTNG_ERR_NOMEM; | |
2329 | goto end; | |
2330 | } | |
2331 | ||
2332 | ret = parse_uint(content, &switch_timer_interval); | |
2333 | free(content); | |
2334 | if (ret) { | |
2335 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2336 | goto end; | |
2337 | } | |
2338 | ||
2339 | if (switch_timer_interval > UINT_MAX) { | |
2340 | WARN("switch_timer_interval out of range."); | |
2341 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2342 | goto end; | |
2343 | } | |
2344 | ||
2345 | channel->attr.switch_timer_interval = | |
2346 | switch_timer_interval; | |
2347 | } else if (!strcmp((const char *) attr_node->name, | |
2348 | config_element_read_timer_interval)) { | |
2349 | xmlChar *content; | |
2350 | uint64_t read_timer_interval = 0; | |
2351 | ||
2352 | /* read_timer_interval */ | |
2353 | content = xmlNodeGetContent(attr_node); | |
2354 | if (!content) { | |
2355 | ret = -LTTNG_ERR_NOMEM; | |
2356 | goto end; | |
2357 | } | |
2358 | ||
2359 | ret = parse_uint(content, &read_timer_interval); | |
2360 | free(content); | |
2361 | if (ret) { | |
2362 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2363 | goto end; | |
2364 | } | |
2365 | ||
2366 | if (read_timer_interval > UINT_MAX) { | |
2367 | WARN("read_timer_interval out of range."); | |
2368 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2369 | goto end; | |
2370 | } | |
2371 | ||
2372 | channel->attr.read_timer_interval = | |
2373 | read_timer_interval; | |
2374 | } else if (!strcmp((const char *) attr_node->name, | |
2375 | config_element_output_type)) { | |
2376 | xmlChar *content; | |
2377 | ||
2378 | /* output_type */ | |
2379 | content = xmlNodeGetContent(attr_node); | |
2380 | if (!content) { | |
2381 | ret = -LTTNG_ERR_NOMEM; | |
2382 | goto end; | |
2383 | } | |
2384 | ||
2385 | ret = get_output_type(content); | |
2386 | free(content); | |
2387 | if (ret < 0) { | |
2388 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2389 | goto end; | |
2390 | } | |
2391 | ||
2392 | channel->attr.output = ret; | |
2393 | } else if (!strcmp((const char *) attr_node->name, | |
2394 | config_element_tracefile_size)) { | |
2395 | xmlChar *content; | |
2396 | ||
2397 | /* tracefile_size */ | |
2398 | content = xmlNodeGetContent(attr_node); | |
2399 | if (!content) { | |
2400 | ret = -LTTNG_ERR_NOMEM; | |
2401 | goto end; | |
2402 | } | |
2403 | ||
2404 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2405 | free(content); | |
2406 | if (ret) { | |
2407 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2408 | goto end; | |
2409 | } | |
2410 | } else if (!strcmp((const char *) attr_node->name, | |
2411 | config_element_tracefile_count)) { | |
2412 | xmlChar *content; | |
2413 | ||
2414 | /* tracefile_count */ | |
2415 | content = xmlNodeGetContent(attr_node); | |
2416 | if (!content) { | |
2417 | ret = -LTTNG_ERR_NOMEM; | |
2418 | goto end; | |
2419 | } | |
2420 | ||
2421 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2422 | free(content); | |
2423 | if (ret) { | |
2424 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2425 | goto end; | |
2426 | } | |
2427 | } else if (!strcmp((const char *) attr_node->name, | |
2428 | config_element_live_timer_interval)) { | |
2429 | xmlChar *content; | |
2430 | uint64_t live_timer_interval = 0; | |
2431 | ||
2432 | /* live_timer_interval */ | |
2433 | content = xmlNodeGetContent(attr_node); | |
2434 | if (!content) { | |
2435 | ret = -LTTNG_ERR_NOMEM; | |
2436 | goto end; | |
2437 | } | |
2438 | ||
2439 | ret = parse_uint(content, &live_timer_interval); | |
2440 | free(content); | |
2441 | if (ret) { | |
2442 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2443 | goto end; | |
2444 | } | |
2445 | ||
2446 | if (live_timer_interval > UINT_MAX) { | |
2447 | WARN("live_timer_interval out of range."); | |
2448 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2449 | goto end; | |
2450 | } | |
2451 | ||
2452 | channel->attr.live_timer_interval = | |
2453 | live_timer_interval; | |
4fc2b126 JR |
2454 | } else if (!strcmp((const char *) attr_node->name, |
2455 | config_element_monitor_timer_interval)) { | |
2456 | xmlChar *content; | |
2457 | uint64_t monitor_timer_interval = 0; | |
2458 | ||
2459 | /* monitor_timer_interval */ | |
2460 | content = xmlNodeGetContent(attr_node); | |
2461 | if (!content) { | |
2462 | ret = -LTTNG_ERR_NOMEM; | |
2463 | goto end; | |
2464 | } | |
2465 | ||
2466 | ret = parse_uint(content, &monitor_timer_interval); | |
2467 | free(content); | |
2468 | if (ret) { | |
2469 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2470 | goto end; | |
2471 | } | |
2472 | ||
2473 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2474 | monitor_timer_interval); | |
2475 | if (ret) { | |
2476 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2477 | goto end; | |
2478 | } | |
275472aa JR |
2479 | } else if (!strcmp((const char *) attr_node->name, |
2480 | config_element_blocking_timeout)) { | |
2481 | xmlChar *content; | |
2482 | int64_t blocking_timeout = 0; | |
2483 | ||
2484 | /* blocking_timeout */ | |
2485 | content = xmlNodeGetContent(attr_node); | |
2486 | if (!content) { | |
2487 | ret = -LTTNG_ERR_NOMEM; | |
2488 | goto end; | |
2489 | } | |
2490 | ||
2491 | ret = parse_int(content, &blocking_timeout); | |
2492 | free(content); | |
2493 | if (ret) { | |
2494 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2495 | goto end; | |
2496 | } | |
2497 | ||
2498 | ret = lttng_channel_set_blocking_timeout(channel, | |
2499 | blocking_timeout); | |
2500 | if (ret) { | |
2501 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2502 | goto end; | |
2503 | } | |
dcf266c0 JG |
2504 | } else if (!strcmp((const char *) attr_node->name, |
2505 | config_element_events)) { | |
2506 | /* events */ | |
2507 | *events_node = attr_node; | |
2508 | } else { | |
2509 | /* contexts */ | |
2510 | *contexts_node = attr_node; | |
2511 | } | |
2512 | ret = 0; | |
2513 | end: | |
2514 | return ret; | |
2515 | } | |
2516 | ||
2517 | static | |
2518 | int process_context_node(xmlNodePtr context_node, | |
2519 | struct lttng_handle *handle, const char *channel_name) | |
2520 | { | |
2521 | int ret; | |
2522 | struct lttng_event_context context; | |
2523 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2524 | ||
2525 | assert(handle); | |
2526 | assert(channel_name); | |
2527 | ||
2528 | if (!context_child_node) { | |
2529 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2530 | goto end; | |
2531 | } | |
2532 | ||
2533 | memset(&context, 0, sizeof(context)); | |
2534 | ||
2535 | if (!strcmp((const char *) context_child_node->name, | |
2536 | config_element_type)) { | |
2537 | /* type */ | |
2538 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2539 | |
dcf266c0 JG |
2540 | if (!content) { |
2541 | ret = -LTTNG_ERR_NOMEM; | |
2542 | goto end; | |
2543 | } | |
2544 | ||
2545 | ret = get_context_type(content); | |
2546 | free(content); | |
2547 | if (ret < 0) { | |
2548 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2549 | goto end; | |
2550 | } | |
2551 | ||
2552 | context.ctx = ret; | |
045fc617 JG |
2553 | } else if (!strcmp((const char *) context_child_node->name, |
2554 | config_element_context_perf)) { | |
2555 | /* perf */ | |
dcf266c0 JG |
2556 | xmlNodePtr perf_attr_node; |
2557 | ||
14ce5bd8 JG |
2558 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2559 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2560 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2561 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2562 | perf_attr_node; perf_attr_node = | |
2563 | xmlNextElementSibling(perf_attr_node)) { | |
2564 | if (!strcmp((const char *) perf_attr_node->name, | |
2565 | config_element_type)) { | |
2566 | xmlChar *content; | |
2567 | uint64_t type = 0; | |
2568 | ||
2569 | /* type */ | |
2570 | content = xmlNodeGetContent(perf_attr_node); | |
2571 | if (!content) { | |
2572 | ret = -LTTNG_ERR_NOMEM; | |
2573 | goto end; | |
2574 | } | |
2575 | ||
2576 | ret = parse_uint(content, &type); | |
2577 | free(content); | |
2578 | if (ret) { | |
2579 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2580 | goto end; | |
2581 | } | |
2582 | ||
2583 | if (type > UINT32_MAX) { | |
2584 | WARN("perf context type out of range."); | |
2585 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2586 | goto end; | |
2587 | } | |
2588 | ||
2589 | context.u.perf_counter.type = type; | |
2590 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2591 | config_element_config)) { | |
2592 | xmlChar *content; | |
2593 | uint64_t config = 0; | |
2594 | ||
2595 | /* config */ | |
2596 | content = xmlNodeGetContent(perf_attr_node); | |
2597 | if (!content) { | |
2598 | ret = -LTTNG_ERR_NOMEM; | |
2599 | goto end; | |
2600 | } | |
2601 | ||
2602 | ret = parse_uint(content, &config); | |
2603 | free(content); | |
2604 | if (ret) { | |
2605 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2606 | goto end; | |
2607 | } | |
2608 | ||
2609 | context.u.perf_counter.config = config; | |
2610 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2611 | config_element_name)) { | |
2612 | xmlChar *content; | |
dcf266c0 JG |
2613 | |
2614 | /* name */ | |
2615 | content = xmlNodeGetContent(perf_attr_node); | |
2616 | if (!content) { | |
2617 | ret = -LTTNG_ERR_NOMEM; | |
2618 | goto end; | |
2619 | } | |
2620 | ||
d2e67842 JG |
2621 | ret = lttng_strncpy(context.u.perf_counter.name, |
2622 | (const char *) content, | |
2623 | LTTNG_SYMBOL_NAME_LEN); | |
2624 | if (ret == -1) { | |
2625 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2626 | (const char *) content, | |
2627 | strlen((const char *) content), | |
2628 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2629 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2630 | free(content); | |
2631 | goto end; | |
2632 | } | |
dcf266c0 JG |
2633 | free(content); |
2634 | } | |
2635 | } | |
045fc617 JG |
2636 | } else if (!strcmp((const char *) context_child_node->name, |
2637 | config_element_context_app)) { | |
2638 | /* application context */ | |
2639 | xmlNodePtr app_ctx_node; | |
2640 | ||
2641 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2642 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2643 | app_ctx_node; app_ctx_node = | |
2644 | xmlNextElementSibling(app_ctx_node)) { | |
2645 | xmlChar *content; | |
2646 | char **target = strcmp( | |
2647 | (const char *) app_ctx_node->name, | |
2648 | config_element_context_app_provider_name) == 0 ? | |
2649 | &context.u.app_ctx.provider_name : | |
2650 | &context.u.app_ctx.ctx_name; | |
2651 | ||
2652 | content = xmlNodeGetContent(app_ctx_node); | |
2653 | if (!content) { | |
2654 | ret = -LTTNG_ERR_NOMEM; | |
2655 | goto end; | |
2656 | } | |
2657 | ||
2658 | *target = (char *) content; | |
2659 | } | |
2660 | } else { | |
2661 | /* Unrecognized context type */ | |
2662 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2663 | goto end; | |
dcf266c0 JG |
2664 | } |
2665 | ||
2666 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2667 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2668 | free(context.u.app_ctx.provider_name); | |
2669 | free(context.u.app_ctx.ctx_name); | |
2670 | } | |
dcf266c0 JG |
2671 | end: |
2672 | return ret; | |
2673 | } | |
2674 | ||
2675 | static | |
2676 | int process_contexts_node(xmlNodePtr contexts_node, | |
2677 | struct lttng_handle *handle, const char *channel_name) | |
2678 | { | |
2679 | int ret = 0; | |
2680 | xmlNodePtr context_node; | |
2681 | ||
2682 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2683 | context_node = xmlNextElementSibling(context_node)) { | |
2684 | ret = process_context_node(context_node, handle, channel_name); | |
2685 | if (ret) { | |
2686 | goto end; | |
2687 | } | |
2688 | } | |
2689 | end: | |
2690 | return ret; | |
2691 | } | |
2692 | ||
159b042f | 2693 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2694 | const char **element_id_tracker, |
159b042f JG |
2695 | const char **element_value_type, |
2696 | const char **element_value, | |
2697 | const char **element_value_alias, | |
55c9e7ca JR |
2698 | const char **element_name) |
2699 | { | |
2700 | int ret = 0; | |
2701 | ||
159b042f JG |
2702 | switch (process_attr) { |
2703 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2704 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2705 | *element_value_type = config_element_process_attr_pid_value; | |
2706 | *element_value = config_element_process_attr_id; | |
2707 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2708 | *element_name = NULL; |
2709 | break; | |
159b042f JG |
2710 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2711 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2712 | *element_value_type = config_element_process_attr_vpid_value; | |
2713 | *element_value = config_element_process_attr_id; | |
2714 | *element_value_alias = NULL; | |
55c9e7ca JR |
2715 | *element_name = NULL; |
2716 | break; | |
159b042f JG |
2717 | case LTTNG_PROCESS_ATTR_USER_ID: |
2718 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2719 | *element_value_type = config_element_process_attr_uid_value; | |
2720 | *element_value = config_element_process_attr_id; | |
2721 | *element_value_alias = NULL; | |
55c9e7ca JR |
2722 | *element_name = config_element_name; |
2723 | break; | |
159b042f JG |
2724 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2725 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2726 | *element_value_type = config_element_process_attr_vuid_value; | |
2727 | *element_value = config_element_process_attr_id; | |
2728 | *element_value_alias = NULL; | |
55c9e7ca JR |
2729 | *element_name = config_element_name; |
2730 | break; | |
159b042f JG |
2731 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2732 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2733 | *element_value_type = config_element_process_attr_gid_value; | |
2734 | *element_value = config_element_process_attr_id; | |
2735 | *element_value_alias = NULL; | |
55c9e7ca JR |
2736 | *element_name = config_element_name; |
2737 | break; | |
159b042f JG |
2738 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2739 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2740 | *element_value_type = config_element_process_attr_vgid_value; | |
2741 | *element_value = config_element_process_attr_id; | |
2742 | *element_value_alias = NULL; | |
55c9e7ca JR |
2743 | *element_name = config_element_name; |
2744 | break; | |
2745 | default: | |
2746 | ret = LTTNG_ERR_INVALID; | |
2747 | } | |
2748 | return ret; | |
2749 | } | |
2750 | ||
f7af9a72 JG |
2751 | static int process_legacy_pid_tracker_node( |
2752 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2753 | { | |
2754 | int ret = 0, child_count; | |
2755 | xmlNodePtr targets_node = NULL; | |
2756 | xmlNodePtr node; | |
2757 | const char *element_id_tracker; | |
2758 | const char *element_target_id; | |
2759 | const char *element_id; | |
2760 | const char *element_id_alias; | |
2761 | const char *element_name; | |
2762 | enum lttng_error_code tracker_handle_ret_code; | |
2763 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2764 | enum lttng_process_attr_tracker_handle_status status; | |
2765 | const enum lttng_process_attr process_attr = | |
2766 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2767 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2768 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2769 | ||
2770 | assert(handle); | |
2771 | ||
2772 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2773 | handle->session_name, handle->domain.type, | |
2774 | process_attr, | |
2775 | &tracker_handle); | |
2776 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2777 | ret = LTTNG_ERR_INVALID; | |
2778 | goto end; | |
2779 | } | |
2780 | ||
2781 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2782 | &element_target_id, &element_id, &element_id_alias, | |
2783 | &element_name); | |
2784 | if (ret) { | |
2785 | goto end; | |
2786 | } | |
2787 | ||
2788 | /* Get the targets node */ | |
2789 | for (node = xmlFirstElementChild(trackers_node); node; | |
2790 | node = xmlNextElementSibling(node)) { | |
2791 | if (!strcmp((const char *) node->name, | |
2792 | config_element_tracker_targets_legacy)) { | |
2793 | targets_node = node; | |
2794 | break; | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | if (!targets_node) { | |
2799 | ret = LTTNG_ERR_INVALID; | |
2800 | goto end; | |
2801 | } | |
2802 | ||
2803 | /* Go through all id target node */ | |
2804 | child_count = xmlChildElementCount(targets_node); | |
2805 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2806 | tracker_handle, | |
2807 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2808 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2809 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2810 | ret = LTTNG_ERR_UNK; | |
2811 | goto end; | |
2812 | } | |
2813 | ||
2814 | /* Add all tracked values. */ | |
2815 | for (node = xmlFirstElementChild(targets_node); node; | |
2816 | node = xmlNextElementSibling(node)) { | |
2817 | xmlNodePtr pid_target_node = node; | |
2818 | ||
2819 | /* get pid_target node and track it */ | |
2820 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2821 | node = xmlNextElementSibling(node)) { | |
2822 | if (!strcmp((const char *) node->name, | |
2823 | config_element_tracker_pid_legacy)) { | |
2824 | int64_t id; | |
2825 | xmlChar *content = xmlNodeGetContent(node); | |
2826 | ||
2827 | if (!content) { | |
2828 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2829 | goto end; | |
2830 | } | |
2831 | ||
2832 | ret = parse_int(content, &id); | |
2833 | free(content); | |
2834 | if (ret) { | |
2835 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2836 | goto end; | |
2837 | } | |
2838 | ||
2839 | switch (process_attr) { | |
2840 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2841 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2842 | tracker_handle, | |
2843 | (pid_t) id); | |
2844 | break; | |
2845 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2846 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2847 | tracker_handle, | |
2848 | (pid_t) id); | |
2849 | break; | |
2850 | default: | |
2851 | ret = LTTNG_ERR_INVALID; | |
2852 | goto end; | |
2853 | } | |
2854 | } | |
2855 | switch (status) { | |
2856 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2857 | continue; | |
2858 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2859 | ret = LTTNG_ERR_INVALID; | |
2860 | break; | |
2861 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2862 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2863 | break; | |
2864 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2865 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2866 | break; | |
2867 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2868 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2869 | default: | |
2870 | ret = LTTNG_ERR_UNK; | |
2871 | goto end; | |
2872 | } | |
2873 | } | |
2874 | node = pid_target_node; | |
2875 | } | |
2876 | ||
2877 | end: | |
2878 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2879 | return ret; | |
2880 | } | |
2881 | ||
55c9e7ca JR |
2882 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2883 | struct lttng_handle *handle, | |
159b042f | 2884 | enum lttng_process_attr process_attr) |
847a5916 | 2885 | { |
159b042f | 2886 | int ret = 0, child_count; |
f7af9a72 | 2887 | xmlNodePtr values_node = NULL; |
847a5916 | 2888 | xmlNodePtr node; |
55c9e7ca JR |
2889 | const char *element_id_tracker; |
2890 | const char *element_target_id; | |
2891 | const char *element_id; | |
2892 | const char *element_id_alias; | |
2893 | const char *element_name; | |
159b042f JG |
2894 | enum lttng_error_code tracker_handle_ret_code; |
2895 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2896 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 JR |
2897 | |
2898 | assert(handle); | |
55c9e7ca JR |
2899 | assert(id_tracker_node); |
2900 | ||
159b042f JG |
2901 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2902 | handle->session_name, handle->domain.type, process_attr, | |
2903 | &tracker_handle); | |
2904 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2905 | ret = LTTNG_ERR_INVALID; | |
2906 | goto end; | |
2907 | } | |
2908 | ||
2909 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2910 | &element_target_id, &element_id, &element_id_alias, |
2911 | &element_name); | |
2912 | if (ret) { | |
159b042f | 2913 | goto end; |
55c9e7ca JR |
2914 | } |
2915 | ||
f7af9a72 | 2916 | /* get the values node */ |
55c9e7ca JR |
2917 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2918 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2919 | if (!strcmp((const char *) node->name, |
159b042f | 2920 | config_element_process_attr_values)) { |
f7af9a72 | 2921 | values_node = node; |
847a5916 JR |
2922 | break; |
2923 | } | |
2924 | } | |
2925 | ||
f7af9a72 | 2926 | if (!values_node) { |
847a5916 JR |
2927 | ret = LTTNG_ERR_INVALID; |
2928 | goto end; | |
2929 | } | |
2930 | ||
55c9e7ca | 2931 | /* Go through all id target node */ |
f7af9a72 | 2932 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2933 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2934 | tracker_handle, | |
2935 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2936 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2937 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2938 | ret = LTTNG_ERR_UNK; | |
2939 | goto end; | |
847a5916 | 2940 | } |
159b042f JG |
2941 | |
2942 | /* Add all tracked values. */ | |
f7af9a72 | 2943 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2944 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2945 | xmlNodePtr id_target_node = node; |
847a5916 | 2946 | |
55c9e7ca JR |
2947 | /* get id node and track it */ |
2948 | for (node = xmlFirstElementChild(id_target_node); node; | |
2949 | node = xmlNextElementSibling(node)) { | |
2950 | if (!strcmp((const char *) node->name, element_id) || | |
2951 | (element_id_alias && | |
2952 | !strcmp((const char *) node->name, | |
2953 | element_id_alias))) { | |
2954 | int64_t id; | |
159b042f | 2955 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2956 | |
847a5916 JR |
2957 | if (!content) { |
2958 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2959 | goto end; | |
2960 | } | |
2961 | ||
55c9e7ca | 2962 | ret = parse_int(content, &id); |
847a5916 JR |
2963 | free(content); |
2964 | if (ret) { | |
2965 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2966 | goto end; | |
2967 | } | |
2968 | ||
159b042f JG |
2969 | switch (process_attr) { |
2970 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2971 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2972 | tracker_handle, | |
2973 | (pid_t) id); | |
2974 | break; | |
2975 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2976 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2977 | tracker_handle, | |
2978 | (pid_t) id); | |
2979 | break; | |
2980 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2981 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2982 | tracker_handle, | |
2983 | (uid_t) id); | |
2984 | break; | |
2985 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2986 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2987 | tracker_handle, | |
2988 | (uid_t) id); | |
2989 | break; | |
2990 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2991 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2992 | tracker_handle, | |
2993 | (gid_t) id); | |
2994 | break; | |
2995 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2996 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2997 | tracker_handle, | |
2998 | (gid_t) id); | |
2999 | break; | |
3000 | default: | |
3001 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
3002 | goto end; |
3003 | } | |
159b042f JG |
3004 | } else if (element_name && |
3005 | !strcmp((const char *) node->name, | |
3006 | element_name)) { | |
3007 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 3008 | |
55c9e7ca JR |
3009 | if (!content) { |
3010 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3011 | goto end; | |
3012 | } | |
2d97a006 | 3013 | |
159b042f JG |
3014 | switch (process_attr) { |
3015 | case LTTNG_PROCESS_ATTR_USER_ID: | |
3016 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
3017 | tracker_handle, | |
3018 | (const char *) content); | |
3019 | break; | |
3020 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3021 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
3022 | tracker_handle, | |
3023 | (const char *) content); | |
3024 | break; | |
3025 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3026 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
3027 | tracker_handle, | |
3028 | (const char *) content); | |
3029 | break; | |
3030 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3031 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
3032 | tracker_handle, | |
3033 | (const char *) content); | |
3034 | break; | |
3035 | default: | |
3036 | free(content); | |
3037 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
3038 | goto end; |
3039 | } | |
55c9e7ca | 3040 | free(content); |
159b042f JG |
3041 | } |
3042 | switch (status) { | |
3043 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
3044 | continue; | |
3045 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
3046 | ret = LTTNG_ERR_INVALID; | |
3047 | break; | |
3048 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
3049 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
3050 | break; | |
3051 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
3052 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
3053 | break; | |
3054 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
3055 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
3056 | default: | |
3057 | ret = LTTNG_ERR_UNK; | |
3058 | goto end; | |
847a5916 JR |
3059 | } |
3060 | } | |
55c9e7ca | 3061 | node = id_target_node; |
847a5916 JR |
3062 | } |
3063 | ||
3064 | end: | |
159b042f | 3065 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
3066 | return ret; |
3067 | } | |
3068 | ||
c3e68e71 JR |
3069 | static |
3070 | int process_channel_node(xmlNodePtr channel_node, struct lttng_handle *handle, | |
3071 | struct lttng_domain *domain, | |
3072 | enum lttng_domain_type original_domain) | |
3073 | { | |
3074 | int ret; | |
3075 | struct lttng_channel *channel = NULL; | |
3076 | xmlNodePtr contexts_node = NULL; | |
3077 | xmlNodePtr events_node = NULL; | |
3078 | xmlNodePtr channel_attr_node; | |
3079 | ||
3080 | /* | |
3081 | * Channels of the "agent" types cannot be created directly. | |
3082 | * They are meant to be created implicitly through the | |
3083 | * activation of events in their domain. However, a user | |
3084 | * can override the default channel configuration attributes | |
3085 | * by creating the underlying UST channel _before_ enabling | |
3086 | * an agent domain event. | |
3087 | * | |
3088 | * Hence, the channel's type is substituted before the creation | |
3089 | * and restored by the time the events are created. | |
3090 | */ | |
3091 | switch (domain->type) { | |
3092 | case LTTNG_DOMAIN_JUL: | |
3093 | case LTTNG_DOMAIN_LOG4J: | |
3094 | case LTTNG_DOMAIN_PYTHON: | |
3095 | domain->type = LTTNG_DOMAIN_UST; | |
3096 | default: | |
3097 | break; | |
3098 | } | |
3099 | ||
3100 | channel = lttng_channel_create(domain); | |
3101 | if (!channel) { | |
3102 | ret = -1; | |
3103 | goto end; | |
3104 | } | |
3105 | ||
3106 | for (channel_attr_node = xmlFirstElementChild(channel_node); | |
3107 | channel_attr_node; channel_attr_node = | |
3108 | xmlNextElementSibling(channel_attr_node)) { | |
3109 | ret = process_channel_attr_node(channel_attr_node, | |
3110 | channel, &contexts_node, &events_node); | |
3111 | if (ret) { | |
3112 | goto end; | |
3113 | } | |
3114 | } | |
3115 | ||
3116 | ret = lttng_enable_channel(handle, channel); | |
3117 | if (ret < 0) { | |
3118 | goto end; | |
3119 | } | |
3120 | ||
3121 | /* Restore the original channel domain-> */ | |
3122 | domain->type = original_domain; | |
3123 | ||
3124 | ret = process_events_node(events_node, handle, channel->name); | |
3125 | if (ret) { | |
3126 | goto end; | |
3127 | } | |
3128 | ||
3129 | ret = process_contexts_node(contexts_node, handle, | |
3130 | channel->name); | |
3131 | if (ret) { | |
3132 | goto end; | |
3133 | } | |
3134 | ||
3135 | end: | |
3136 | lttng_channel_destroy(channel); | |
3137 | return ret; | |
3138 | } | |
3139 | ||
3140 | static int process_dimension_node(xmlNodePtr dimension_node, | |
3141 | struct lttng_dynamic_array *dimension_sizes) | |
3142 | { | |
3143 | int ret; | |
3144 | xmlNodePtr node; | |
3145 | xmlChar *size_str = NULL; | |
3146 | uint64_t size; | |
3147 | ||
3148 | assert(strcmp((const char *) dimension_node->name, | |
3149 | config_element_dimension) == 0); | |
3150 | assert(dimension_sizes->element_size == sizeof(uint64_t)); | |
3151 | ||
3152 | for (node = xmlFirstElementChild(dimension_node); node; | |
3153 | node = xmlNextElementSibling(node)) { | |
3154 | if (strcmp((const char *) node->name, | |
3155 | config_element_dimension_size) == 0) { | |
3156 | assert(!size_str); | |
3157 | size_str = xmlNodeGetContent(node); | |
3158 | if (!size_str) { | |
3159 | ERR("Failed to get dimension size node content."); | |
3160 | ret = -LTTNG_ERR_NOMEM; | |
3161 | goto end; | |
3162 | } | |
3163 | ||
3164 | ret = parse_uint(size_str, &size); | |
3165 | assert(!ret); | |
3166 | ||
3167 | ret = lttng_dynamic_array_add_element(dimension_sizes, &size); | |
3168 | if (ret) { | |
3169 | goto end; | |
3170 | } | |
3171 | } else { | |
3172 | assert(false); | |
3173 | } | |
3174 | } | |
3175 | ||
3176 | ret = 0; | |
3177 | ||
3178 | end: | |
3179 | xmlFree(size_str); | |
3180 | return ret; | |
3181 | } | |
3182 | ||
3183 | /* `dimensions_sizes` must be initialized to hold uint64_t elements. */ | |
3184 | ||
3185 | static int process_dimensions_node(xmlNodePtr dimensions_node, | |
3186 | struct lttng_dynamic_array *dimension_sizes) | |
3187 | { | |
3188 | xmlNodePtr dimension_node; | |
3189 | int ret = 0; | |
3190 | ||
3191 | assert(strcmp((const char *) dimensions_node->name, | |
3192 | config_element_dimensions) == 0); | |
3193 | assert(dimension_sizes->element_size == sizeof(uint64_t)); | |
3194 | assert(lttng_dynamic_array_get_count(dimension_sizes) == 0); | |
3195 | ||
3196 | for (dimension_node = xmlFirstElementChild(dimensions_node); | |
3197 | dimension_node; dimension_node = xmlNextElementSibling( | |
3198 | dimension_node)) { | |
3199 | ret = process_dimension_node(dimension_node, dimension_sizes); | |
3200 | if (ret) { | |
3201 | goto end; | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | assert(lttng_dynamic_array_get_count(dimension_sizes) > 0); | |
3206 | ||
3207 | end: | |
3208 | return ret; | |
3209 | } | |
3210 | ||
3211 | static int process_map_node(xmlNodePtr map_node, struct lttng_handle *handle) | |
3212 | { | |
3213 | int ret; | |
3214 | xmlNodePtr node; | |
3215 | xmlChar *name = NULL; | |
3216 | xmlChar *enabled_str = NULL; | |
3217 | int enabled; | |
3218 | xmlChar *bitness_str = NULL; | |
3219 | enum lttng_map_bitness bitness = LTTNG_MAP_BITNESS_32BITS; | |
3220 | xmlChar *boundary_policy_str = NULL; | |
3221 | enum lttng_map_boundary_policy boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW; | |
3222 | xmlChar *coalesce_hits_str = NULL; | |
3223 | int coalesce_hits; | |
3224 | enum lttng_map_status map_status; | |
3225 | struct lttng_map *map = NULL; | |
3226 | struct lttng_dynamic_array dimension_sizes; | |
3227 | enum lttng_error_code error_code; | |
3228 | ||
3229 | assert(strcmp((const char *) map_node->name, config_element_map) == 0); | |
3230 | ||
3231 | lttng_dynamic_array_init(&dimension_sizes, sizeof(uint64_t), NULL); | |
3232 | ||
3233 | for (node = xmlFirstElementChild(map_node); node; | |
3234 | node = xmlNextElementSibling(node)) { | |
3235 | if (strcmp((const char *) node->name, config_element_name) == | |
3236 | 0) { | |
3237 | assert(!name); | |
3238 | name = xmlNodeGetContent(node); | |
3239 | if (!name) { | |
3240 | ERR("Failed to get map name node content."); | |
3241 | ret = -LTTNG_ERR_NOMEM; | |
3242 | goto end; | |
3243 | } | |
3244 | } else if (strcmp((const char *) node->name, | |
3245 | config_element_enabled) == 0) { | |
3246 | assert(!enabled_str); | |
3247 | enabled_str = xmlNodeGetContent(node); | |
3248 | if (!enabled_str) { | |
3249 | ERR("Failed to get map enabled node content."); | |
3250 | ret = -LTTNG_ERR_NOMEM; | |
3251 | goto end; | |
3252 | } | |
3253 | ||
3254 | ret = parse_bool(enabled_str, &enabled); | |
3255 | assert(!ret); | |
3256 | } else if (strcmp((const char *) node->name, | |
3257 | config_element_bitness) == 0) { | |
3258 | assert(!bitness_str); | |
3259 | bitness_str = xmlNodeGetContent(node); | |
3260 | if (!bitness_str) { | |
3261 | ERR("Failed to get map bitness node content."); | |
3262 | ret = -LTTNG_ERR_NOMEM; | |
3263 | goto end; | |
3264 | } | |
3265 | ||
3266 | if (strcmp((const char *) bitness_str, "32") == 0) { | |
3267 | bitness = LTTNG_MAP_BITNESS_32BITS; | |
3268 | } else { | |
3269 | assert(strcmp((const char *) bitness_str, | |
3270 | "64") == 0); | |
3271 | bitness = LTTNG_MAP_BITNESS_64BITS; | |
3272 | } | |
3273 | } else if (strcmp((const char *) node->name, | |
3274 | config_element_boundary_policy) == | |
3275 | 0) { | |
3276 | assert(!boundary_policy_str); | |
3277 | boundary_policy_str = xmlNodeGetContent(node); | |
3278 | if (!boundary_policy_str) { | |
3279 | ERR("Failed to get map boundary policy node content."); | |
3280 | ret = -LTTNG_ERR_NOMEM; | |
3281 | goto end; | |
3282 | } | |
3283 | ||
3284 | assert(strcmp((const char *) boundary_policy_str, | |
3285 | config_boundary_policy_overflow) == | |
3286 | 0); | |
3287 | boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW; | |
3288 | } else if (strcmp((const char *) node->name, | |
3289 | config_element_coalesce_hits) == 0) { | |
3290 | assert(!coalesce_hits_str); | |
3291 | coalesce_hits_str = xmlNodeGetContent(node); | |
3292 | if (!coalesce_hits_str) { | |
3293 | ERR("Failed to get map coalesce hits node content."); | |
3294 | ret = -LTTNG_ERR_NOMEM; | |
3295 | goto end; | |
3296 | } | |
3297 | ||
3298 | ret = parse_bool(coalesce_hits_str, &coalesce_hits); | |
3299 | assert(!ret); | |
3300 | } else if (strcmp((const char *) node->name, | |
3301 | config_element_dimensions) == 0) { | |
3302 | ret = process_dimensions_node(node, &dimension_sizes); | |
3303 | if (ret) { | |
3304 | goto end; | |
3305 | } | |
3306 | } else { | |
3307 | assert(false); | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | assert(name); | |
3312 | map_status = lttng_map_create((const char *) name, | |
3313 | lttng_dynamic_array_get_count(&dimension_sizes), | |
3314 | (uint64_t *) dimension_sizes.buffer.data, | |
3315 | handle->domain.type, handle->domain.buf_type, bitness, | |
3316 | boundary_policy, coalesce_hits, &map); | |
3317 | if (map_status != LTTNG_MAP_STATUS_OK) { | |
3318 | ERR("Failed to create map."); | |
3319 | ret = -LTTNG_ERR_UNK; | |
3320 | goto end; | |
3321 | } | |
3322 | ||
3323 | error_code = lttng_add_map(handle, map); | |
3324 | if (error_code != LTTNG_OK) { | |
3325 | ERR("Adding map \"%s\": %s", (const char *) name, | |
3326 | lttng_strerror(error_code)); | |
3327 | ret = error_code; | |
3328 | goto end; | |
3329 | } | |
3330 | ||
3331 | // FIXME: disabling the map after creating leaves a window of time | |
3332 | // where it is enabled, does it matter? | |
3333 | if (!enabled) { | |
3334 | ret = lttng_disable_map(handle, (const char *) name); | |
3335 | if (ret) { | |
3336 | goto end; | |
3337 | } | |
3338 | } | |
3339 | ||
3340 | ret = 0; | |
3341 | ||
3342 | end: | |
3343 | xmlFree(name); | |
3344 | xmlFree(enabled_str); | |
3345 | xmlFree(bitness_str); | |
3346 | xmlFree(boundary_policy_str); | |
3347 | xmlFree(coalesce_hits_str); | |
3348 | lttng_dynamic_array_reset(&dimension_sizes); | |
3349 | lttng_map_destroy(map); | |
3350 | ||
3351 | return ret; | |
3352 | } | |
3353 | ||
dcf266c0 JG |
3354 | static |
3355 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
3356 | { | |
3357 | int ret; | |
3358 | struct lttng_domain domain = { 0 }; | |
3359 | struct lttng_handle *handle = NULL; | |
3360 | xmlNodePtr channels_node = NULL; | |
c3e68e71 | 3361 | xmlNodePtr maps_node = NULL; |
847a5916 JR |
3362 | xmlNodePtr trackers_node = NULL; |
3363 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
3364 | xmlNodePtr vpid_tracker_node = NULL; |
3365 | xmlNodePtr uid_tracker_node = NULL; | |
3366 | xmlNodePtr vuid_tracker_node = NULL; | |
3367 | xmlNodePtr gid_tracker_node = NULL; | |
3368 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
3369 | xmlNodePtr node; |
3370 | ||
3371 | assert(session_name); | |
3372 | ||
3373 | ret = init_domain(domain_node, &domain); | |
3374 | if (ret) { | |
3375 | goto end; | |
3376 | } | |
3377 | ||
3378 | handle = lttng_create_handle(session_name, &domain); | |
3379 | if (!handle) { | |
3380 | ret = -LTTNG_ERR_NOMEM; | |
3381 | goto end; | |
3382 | } | |
3383 | ||
3384 | /* get the channels node */ | |
3385 | for (node = xmlFirstElementChild(domain_node); node; | |
3386 | node = xmlNextElementSibling(node)) { | |
3387 | if (!strcmp((const char *) node->name, | |
3388 | config_element_channels)) { | |
3389 | channels_node = node; | |
3390 | break; | |
3391 | } | |
3392 | } | |
3393 | ||
c3e68e71 JR |
3394 | if (channels_node) { |
3395 | /* create all channels */ | |
3396 | for (node = xmlFirstElementChild(channels_node); node; | |
3397 | node = xmlNextElementSibling(node)) { | |
3398 | const enum lttng_domain_type original_domain = domain.type; | |
dcf266c0 | 3399 | |
c3e68e71 JR |
3400 | ret = process_channel_node(node, handle, &domain, |
3401 | original_domain); | |
dcf266c0 JG |
3402 | if (ret) { |
3403 | goto end; | |
3404 | } | |
3405 | } | |
c3e68e71 | 3406 | } |
dcf266c0 | 3407 | |
c3e68e71 JR |
3408 | /* get the maps node */ |
3409 | for (node = xmlFirstElementChild(domain_node); node; | |
3410 | node = xmlNextElementSibling(node)) { | |
3411 | if (!strcmp((const char *) node->name, config_element_maps)) { | |
3412 | maps_node = node; | |
3413 | break; | |
dcf266c0 | 3414 | } |
c3e68e71 | 3415 | } |
dcf266c0 | 3416 | |
c3e68e71 JR |
3417 | if (maps_node) { |
3418 | /* create all maps */ | |
3419 | for (node = xmlFirstElementChild(maps_node); node; | |
3420 | node = xmlNextElementSibling(node)) { | |
3421 | ret = process_map_node(node, handle); | |
3422 | if (ret) { | |
3423 | goto end; | |
3424 | } | |
dcf266c0 JG |
3425 | } |
3426 | } | |
847a5916 JR |
3427 | |
3428 | /* get the trackers node */ | |
3429 | for (node = xmlFirstElementChild(domain_node); node; | |
3430 | node = xmlNextElementSibling(node)) { | |
3431 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3432 | config_element_process_attr_trackers) || |
3433 | !strcmp((const char *) node->name, | |
3434 | config_element_trackers_legacy)) { | |
3435 | if (trackers_node) { | |
3436 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3437 | config_element_process_attr_trackers, | |
3438 | config_element_trackers_legacy); | |
3439 | ret = -1; | |
3440 | goto end; | |
3441 | } | |
847a5916 JR |
3442 | trackers_node = node; |
3443 | break; | |
3444 | } | |
3445 | } | |
3446 | ||
3447 | if (!trackers_node) { | |
3448 | goto end; | |
3449 | } | |
3450 | ||
3451 | for (node = xmlFirstElementChild(trackers_node); node; | |
3452 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3453 | if (!strcmp((const char *) node->name, |
159b042f | 3454 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3455 | pid_tracker_node = node; |
55c9e7ca | 3456 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3457 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3458 | if (ret) { |
3459 | goto end; | |
3460 | } | |
3461 | } | |
3462 | if (!strcmp((const char *) node->name, | |
159b042f | 3463 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3464 | vpid_tracker_node = node; |
3465 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3466 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3467 | if (ret) { |
3468 | goto end; | |
3469 | } | |
3470 | } | |
3471 | if (!strcmp((const char *) node->name, | |
159b042f | 3472 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3473 | uid_tracker_node = node; |
3474 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3475 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3476 | if (ret) { |
3477 | goto end; | |
3478 | } | |
3479 | } | |
3480 | if (!strcmp((const char *) node->name, | |
159b042f | 3481 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3482 | vuid_tracker_node = node; |
3483 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3484 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3485 | if (ret) { |
3486 | goto end; | |
3487 | } | |
3488 | } | |
3489 | if (!strcmp((const char *) node->name, | |
159b042f | 3490 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3491 | gid_tracker_node = node; |
3492 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3493 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3494 | if (ret) { |
3495 | goto end; | |
3496 | } | |
3497 | } | |
3498 | if (!strcmp((const char *) node->name, | |
159b042f | 3499 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3500 | vgid_tracker_node = node; |
3501 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3502 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3503 | if (ret) { |
3504 | goto end; | |
3505 | } | |
3506 | } | |
f7af9a72 JG |
3507 | if (!strcmp((const char *) node->name, |
3508 | config_element_pid_tracker_legacy)) { | |
3509 | ret = process_legacy_pid_tracker_node(node, handle); | |
3510 | if (ret) { | |
3511 | goto end; | |
3512 | } | |
3513 | } | |
847a5916 JR |
3514 | } |
3515 | ||
dcf266c0 JG |
3516 | end: |
3517 | lttng_destroy_handle(handle); | |
3518 | return ret; | |
3519 | } | |
3520 | ||
66ea93b1 JG |
3521 | static |
3522 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3523 | { | |
3524 | int ret; | |
3525 | enum lttng_rotation_status status; | |
3526 | struct lttng_rotation_schedule *periodic = | |
3527 | lttng_rotation_schedule_periodic_create(); | |
3528 | ||
3529 | if (!periodic) { | |
3530 | ret = -LTTNG_ERR_NOMEM; | |
3531 | goto error; | |
3532 | } | |
3533 | ||
3534 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3535 | time_us); | |
3536 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3537 | ret = -LTTNG_ERR_INVALID; | |
3538 | goto error; | |
3539 | } | |
3540 | ||
3541 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3542 | switch (status) { | |
3543 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3544 | ret = 0; |
66ea93b1 JG |
3545 | break; |
3546 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3547 | case LTTNG_ROTATION_STATUS_INVALID: | |
3548 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3549 | break; | |
3550 | default: | |
3551 | ret = -LTTNG_ERR_UNK; | |
3552 | break; | |
3553 | } | |
3554 | error: | |
3555 | lttng_rotation_schedule_destroy(periodic); | |
3556 | return ret; | |
3557 | } | |
3558 | ||
3559 | static | |
3560 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3561 | { | |
3562 | int ret; | |
3563 | enum lttng_rotation_status status; | |
3564 | struct lttng_rotation_schedule *size = | |
3565 | lttng_rotation_schedule_size_threshold_create(); | |
3566 | ||
3567 | if (!size) { | |
3568 | ret = -LTTNG_ERR_NOMEM; | |
3569 | goto error; | |
3570 | } | |
3571 | ||
3572 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3573 | size_bytes); | |
3574 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3575 | ret = -LTTNG_ERR_INVALID; | |
3576 | goto error; | |
3577 | } | |
3578 | ||
3579 | status = lttng_session_add_rotation_schedule(name, size); | |
3580 | switch (status) { | |
3581 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3582 | ret = 0; |
66ea93b1 JG |
3583 | break; |
3584 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3585 | case LTTNG_ROTATION_STATUS_INVALID: | |
3586 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3587 | break; | |
3588 | default: | |
3589 | ret = -LTTNG_ERR_UNK; | |
3590 | break; | |
3591 | } | |
3592 | error: | |
3593 | lttng_rotation_schedule_destroy(size); | |
3594 | return ret; | |
3595 | } | |
3596 | ||
ce6176f2 JG |
3597 | static |
3598 | int process_session_rotation_schedules_node( | |
3599 | xmlNodePtr schedules_node, | |
3600 | uint64_t *rotation_timer_interval, | |
3601 | uint64_t *rotation_size) | |
3602 | { | |
3603 | int ret = 0; | |
3604 | xmlNodePtr child; | |
3605 | ||
3606 | for (child = xmlFirstElementChild(schedules_node); | |
3607 | child; | |
3608 | child = xmlNextElementSibling(child)) { | |
3609 | if (!strcmp((const char *) child->name, | |
3610 | config_element_rotation_schedule_periodic)) { | |
3611 | xmlChar *content; | |
3612 | xmlNodePtr time_us_node; | |
3613 | ||
3614 | /* periodic rotation schedule */ | |
3615 | time_us_node = xmlFirstElementChild(child); | |
3616 | if (!time_us_node || | |
3617 | strcmp((const char *) time_us_node->name, | |
3618 | config_element_rotation_schedule_periodic_time_us)) { | |
3619 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3620 | goto end; | |
3621 | } | |
3622 | ||
3623 | /* time_us child */ | |
3624 | content = xmlNodeGetContent(time_us_node); | |
3625 | if (!content) { | |
3626 | ret = -LTTNG_ERR_NOMEM; | |
3627 | goto end; | |
3628 | } | |
3629 | ret = parse_uint(content, rotation_timer_interval); | |
3630 | free(content); | |
3631 | if (ret) { | |
3632 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3633 | goto end; | |
3634 | } | |
3635 | } else if (!strcmp((const char *) child->name, | |
3636 | config_element_rotation_schedule_size_threshold)) { | |
3637 | xmlChar *content; | |
3638 | xmlNodePtr bytes_node; | |
3639 | ||
3640 | /* size_threshold rotation schedule */ | |
3641 | bytes_node = xmlFirstElementChild(child); | |
3642 | if (!bytes_node || | |
3643 | strcmp((const char *) bytes_node->name, | |
3644 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3645 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3646 | goto end; | |
3647 | } | |
3648 | ||
3649 | /* bytes child */ | |
3650 | content = xmlNodeGetContent(bytes_node); | |
3651 | if (!content) { | |
3652 | ret = -LTTNG_ERR_NOMEM; | |
3653 | goto end; | |
3654 | } | |
3655 | ret = parse_uint(content, rotation_size); | |
3656 | free(content); | |
3657 | if (ret) { | |
3658 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3659 | goto end; | |
3660 | } | |
3661 | } | |
3662 | } | |
3663 | ||
3664 | end: | |
3665 | return ret; | |
3666 | } | |
3667 | ||
dcf266c0 JG |
3668 | static |
3669 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3670 | int overwrite, |
3671 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3672 | { |
3673 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3674 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3675 | rotation_timer_interval = 0, |
3676 | rotation_size = 0; | |
d324faf7 | 3677 | xmlChar *name = NULL; |
9e7c9f56 | 3678 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3679 | xmlNodePtr domains_node = NULL; |
3680 | xmlNodePtr output_node = NULL; | |
3681 | xmlNodePtr node; | |
90936dcf | 3682 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3683 | struct lttng_domain *kernel_domain = NULL; |
3684 | struct lttng_domain *ust_domain = NULL; | |
3685 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3686 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3687 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3688 | |
3689 | for (node = xmlFirstElementChild(session_node); node; | |
3690 | node = xmlNextElementSibling(node)) { | |
3691 | if (!name && !strcmp((const char *) node->name, | |
3692 | config_element_name)) { | |
3693 | /* name */ | |
3694 | xmlChar *node_content = xmlNodeGetContent(node); | |
3695 | if (!node_content) { | |
3696 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3697 | goto error; |
dcf266c0 JG |
3698 | } |
3699 | ||
d324faf7 | 3700 | name = node_content; |
dcf266c0 JG |
3701 | } else if (!domains_node && !strcmp((const char *) node->name, |
3702 | config_element_domains)) { | |
3703 | /* domains */ | |
3704 | domains_node = node; | |
3705 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3706 | config_element_started)) { | |
3707 | /* started */ | |
3708 | xmlChar *node_content = xmlNodeGetContent(node); | |
3709 | if (!node_content) { | |
3710 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3711 | goto error; |
dcf266c0 JG |
3712 | } |
3713 | ||
3714 | ret = parse_bool(node_content, &started); | |
3715 | free(node_content); | |
3716 | if (ret) { | |
3717 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3718 | goto error; |
dcf266c0 JG |
3719 | } |
3720 | } else if (!output_node && !strcmp((const char *) node->name, | |
3721 | config_element_output)) { | |
3722 | /* output */ | |
3723 | output_node = node; | |
9e7c9f56 JR |
3724 | } else if (!shm_path && !strcmp((const char *) node->name, |
3725 | config_element_shared_memory_path)) { | |
3726 | /* shared memory path */ | |
3727 | xmlChar *node_content = xmlNodeGetContent(node); | |
3728 | if (!node_content) { | |
3729 | ret = -LTTNG_ERR_NOMEM; | |
3730 | goto error; | |
3731 | } | |
3732 | ||
3733 | shm_path = node_content; | |
dcf266c0 | 3734 | } else { |
259c2674 JD |
3735 | /* |
3736 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3737 | * rotation_timer_interval. |
3738 | */ | |
3739 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3740 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3741 | if (!strcmp((const char *) attributes_child->name, | |
3742 | config_element_snapshot_mode)) { | |
3743 | /* snapshot_mode */ | |
3744 | xmlChar *snapshot_mode_content = | |
3745 | xmlNodeGetContent(attributes_child); | |
3746 | if (!snapshot_mode_content) { | |
3747 | ret = -LTTNG_ERR_NOMEM; | |
3748 | goto error; | |
3749 | } | |
dcf266c0 | 3750 | |
90936dcf JD |
3751 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3752 | free(snapshot_mode_content); | |
3753 | if (ret) { | |
3754 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3755 | goto error; | |
3756 | } | |
3757 | } else if (!strcmp((const char *) attributes_child->name, | |
3758 | config_element_live_timer_interval)) { | |
3759 | /* live_timer_interval */ | |
3760 | xmlChar *timer_interval_content = | |
3761 | xmlNodeGetContent(attributes_child); | |
3762 | if (!timer_interval_content) { | |
3763 | ret = -LTTNG_ERR_NOMEM; | |
3764 | goto error; | |
3765 | } | |
dcf266c0 | 3766 | |
90936dcf JD |
3767 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3768 | free(timer_interval_content); | |
3769 | if (ret) { | |
3770 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3771 | goto error; | |
3772 | } | |
ce6176f2 JG |
3773 | } else if (!strcmp((const char *) attributes_child->name, |
3774 | config_element_rotation_schedules)) { | |
3775 | ret = process_session_rotation_schedules_node( | |
3776 | attributes_child, | |
3777 | &rotation_timer_interval, | |
3778 | &rotation_size); | |
90936dcf JD |
3779 | if (ret) { |
3780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3781 | goto error; | |
3782 | } | |
259c2674 | 3783 | |
259c2674 JD |
3784 | } |
3785 | } | |
dcf266c0 JG |
3786 | } |
3787 | } | |
3788 | ||
3789 | if (!name) { | |
3790 | /* Mandatory attribute, as defined in the session XSD */ | |
3791 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3792 | goto error; |
dcf266c0 JG |
3793 | } |
3794 | ||
d324faf7 | 3795 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3796 | /* This is not the session we are looking for */ |
c2da8cde DG |
3797 | ret = -LTTNG_ERR_NO_SESSION; |
3798 | goto error; | |
dcf266c0 JG |
3799 | } |
3800 | ||
3801 | /* Init domains to create the session handles */ | |
3802 | for (node = xmlFirstElementChild(domains_node); node; | |
3803 | node = xmlNextElementSibling(node)) { | |
3804 | struct lttng_domain *domain; | |
3805 | ||
3806 | domain = zmalloc(sizeof(*domain)); | |
3807 | if (!domain) { | |
3808 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3809 | goto error; |
dcf266c0 JG |
3810 | } |
3811 | ||
3812 | ret = init_domain(node, domain); | |
3813 | if (ret) { | |
3814 | goto domain_init_error; | |
3815 | } | |
3816 | ||
3817 | switch (domain->type) { | |
3818 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3819 | if (kernel_domain) { |
3820 | /* Same domain seen twice, invalid! */ | |
3821 | goto domain_init_error; | |
3822 | } | |
dcf266c0 JG |
3823 | kernel_domain = domain; |
3824 | break; | |
3825 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3826 | if (ust_domain) { |
3827 | /* Same domain seen twice, invalid! */ | |
3828 | goto domain_init_error; | |
3829 | } | |
dcf266c0 JG |
3830 | ust_domain = domain; |
3831 | break; | |
3832 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3833 | if (jul_domain) { |
3834 | /* Same domain seen twice, invalid! */ | |
3835 | goto domain_init_error; | |
3836 | } | |
dcf266c0 JG |
3837 | jul_domain = domain; |
3838 | break; | |
5cdb6027 DG |
3839 | case LTTNG_DOMAIN_LOG4J: |
3840 | if (log4j_domain) { | |
3841 | /* Same domain seen twice, invalid! */ | |
3842 | goto domain_init_error; | |
3843 | } | |
3844 | log4j_domain = domain; | |
3845 | break; | |
0e115563 DG |
3846 | case LTTNG_DOMAIN_PYTHON: |
3847 | if (python_domain) { | |
3848 | /* Same domain seen twice, invalid! */ | |
3849 | goto domain_init_error; | |
3850 | } | |
3851 | python_domain = domain; | |
3852 | break; | |
dcf266c0 JG |
3853 | default: |
3854 | WARN("Invalid domain type"); | |
3855 | goto domain_init_error; | |
3856 | } | |
3857 | continue; | |
3858 | domain_init_error: | |
3859 | free(domain); | |
3860 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3861 | goto error; |
dcf266c0 JG |
3862 | } |
3863 | ||
2aaf5fc7 JR |
3864 | /* Apply overrides */ |
3865 | if (overrides) { | |
3866 | if (overrides->session_name) { | |
3867 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3868 | if (!name_override) { | |
3869 | ret = -LTTNG_ERR_NOMEM; | |
3870 | goto error; | |
3871 | } | |
3872 | ||
3873 | /* Overrides the session name to the provided name */ | |
3874 | xmlFree(name); | |
3875 | name = name_override; | |
3876 | } | |
3877 | } | |
3878 | ||
40b4155f | 3879 | if (overwrite) { |
dcf266c0 | 3880 | /* Destroy session if it exists */ |
d324faf7 | 3881 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3882 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3883 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3884 | goto error; |
dcf266c0 JG |
3885 | } |
3886 | } | |
3887 | ||
3888 | /* Create session type depending on output type */ | |
3889 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3890 | ret = create_snapshot_session((const char *) name, output_node, |
3891 | overrides); | |
dcf266c0 JG |
3892 | } else if (live_timer_interval && |
3893 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3894 | ret = create_session((const char *) name, |
1b08cbce | 3895 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3896 | } else { |
3897 | /* regular session */ | |
194dfca0 | 3898 | ret = create_session((const char *) name, |
1b08cbce | 3899 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3900 | } |
dcf266c0 | 3901 | if (ret) { |
c2da8cde | 3902 | goto error; |
dcf266c0 JG |
3903 | } |
3904 | ||
9e7c9f56 JR |
3905 | if (shm_path) { |
3906 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3907 | (const char *) shm_path); |
9e7c9f56 JR |
3908 | if (ret) { |
3909 | goto error; | |
3910 | } | |
3911 | } | |
3912 | ||
dcf266c0 JG |
3913 | for (node = xmlFirstElementChild(domains_node); node; |
3914 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3915 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3916 | if (ret) { |
3917 | goto end; | |
3918 | } | |
3919 | } | |
3920 | ||
66ea93b1 JG |
3921 | if (rotation_timer_interval) { |
3922 | ret = add_periodic_rotation((const char *) name, | |
3923 | rotation_timer_interval); | |
3924 | if (ret < 0) { | |
259c2674 JD |
3925 | goto error; |
3926 | } | |
66ea93b1 JG |
3927 | } |
3928 | if (rotation_size) { | |
3929 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3930 | rotation_size); |
66ea93b1 | 3931 | if (ret < 0) { |
259c2674 JD |
3932 | goto error; |
3933 | } | |
3934 | } | |
3935 | ||
dcf266c0 | 3936 | if (started) { |
d324faf7 | 3937 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3938 | if (ret) { |
3939 | goto end; | |
3940 | } | |
3941 | } | |
c2da8cde | 3942 | |
dcf266c0 | 3943 | end: |
b2579dc1 | 3944 | if (ret < 0) { |
d324faf7 JG |
3945 | ERR("Failed to load session %s: %s", (const char *) name, |
3946 | lttng_strerror(ret)); | |
3947 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3948 | } |
3949 | ||
c2da8cde | 3950 | error: |
dcf266c0 JG |
3951 | free(kernel_domain); |
3952 | free(ust_domain); | |
3953 | free(jul_domain); | |
5cdb6027 | 3954 | free(log4j_domain); |
135a3893 | 3955 | free(python_domain); |
d324faf7 | 3956 | xmlFree(name); |
9e7c9f56 | 3957 | xmlFree(shm_path); |
dcf266c0 JG |
3958 | return ret; |
3959 | } | |
3960 | ||
cf53c06d DG |
3961 | /* |
3962 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3963 | * Return -1 if the path is EPERM. | |
3964 | */ | |
3965 | static int validate_file_read_creds(const char *path) | |
3966 | { | |
3967 | int ret; | |
3968 | ||
3969 | assert(path); | |
3970 | ||
3971 | /* Can we read the file. */ | |
3972 | ret = access(path, R_OK); | |
3973 | if (!ret) { | |
3974 | goto valid; | |
3975 | } | |
3976 | if (errno == EACCES) { | |
3977 | return -1; | |
3978 | } else { | |
3979 | /* Invalid. */ | |
3980 | return 0; | |
3981 | } | |
3982 | valid: | |
3983 | return 1; | |
3984 | } | |
3985 | ||
dcf266c0 JG |
3986 | static |
3987 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3988 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3989 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3990 | { |
3991 | int ret, session_found = !session_name; | |
3992 | xmlDocPtr doc = NULL; | |
3993 | xmlNodePtr sessions_node; | |
3994 | xmlNodePtr session_node; | |
dcf266c0 JG |
3995 | |
3996 | assert(path); | |
3997 | assert(validation_ctx); | |
3998 | ||
cf53c06d DG |
3999 | ret = validate_file_read_creds(path); |
4000 | if (ret != 1) { | |
4001 | if (ret == -1) { | |
4002 | ret = -LTTNG_ERR_EPERM; | |
4003 | } else { | |
4004 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
4005 | } | |
dcf266c0 JG |
4006 | goto end; |
4007 | } | |
4008 | ||
4009 | doc = xmlParseFile(path); | |
4010 | if (!doc) { | |
4011 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
4012 | goto end; | |
4013 | } | |
4014 | ||
4015 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
4016 | if (ret) { | |
4017 | ERR("Session configuration file validation failed"); | |
4018 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
4019 | goto end; | |
4020 | } | |
4021 | ||
4022 | sessions_node = xmlDocGetRootElement(doc); | |
4023 | if (!sessions_node) { | |
55c9e7ca | 4024 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
4025 | goto end; |
4026 | } | |
4027 | ||
4028 | for (session_node = xmlFirstElementChild(sessions_node); | |
4029 | session_node; session_node = | |
4030 | xmlNextElementSibling(session_node)) { | |
4031 | ret = process_session_node(session_node, | |
1b08cbce | 4032 | session_name, overwrite, overrides); |
317ea246 JG |
4033 | if (!session_name && ret) { |
4034 | /* Loading error occurred. */ | |
4035 | goto end; | |
4036 | } else if (session_name) { | |
4037 | if (ret == 0) { | |
4038 | /* Target session found and loaded */ | |
4039 | session_found = 1; | |
4040 | break; | |
4041 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
4042 | /* | |
4043 | * Ignore this error, we are looking for a | |
4044 | * specific session. | |
4045 | */ | |
4046 | ret = 0; | |
4047 | } else { | |
4048 | /* Loading error occurred. */ | |
4049 | goto end; | |
4050 | } | |
dcf266c0 JG |
4051 | } |
4052 | } | |
4053 | end: | |
4054 | xmlFreeDoc(doc); | |
4055 | if (!ret) { | |
a96bc65d | 4056 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
4057 | } |
4058 | return ret; | |
4059 | } | |
4060 | ||
4061 | static | |
4062 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
4063 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
4064 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4065 | { |
4066 | int ret, session_found = !session_name; | |
dcf266c0 | 4067 | DIR *directory = NULL; |
cce35f91 JG |
4068 | struct lttng_dynamic_buffer file_path; |
4069 | size_t path_len; | |
dcf266c0 JG |
4070 | |
4071 | assert(path); | |
4072 | assert(validation_ctx); | |
cce35f91 JG |
4073 | path_len = strlen(path); |
4074 | lttng_dynamic_buffer_init(&file_path); | |
4075 | if (path_len >= LTTNG_PATH_MAX) { | |
4076 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
4077 | path, path_len, LTTNG_PATH_MAX); | |
4078 | ret = -LTTNG_ERR_INVALID; | |
4079 | goto end; | |
4080 | } | |
dcf266c0 | 4081 | |
4af16958 DG |
4082 | directory = opendir(path); |
4083 | if (!directory) { | |
11143783 DG |
4084 | switch (errno) { |
4085 | case ENOTDIR: | |
0f0a81b5 DG |
4086 | /* Try the file loading. */ |
4087 | break; | |
11143783 DG |
4088 | case ENOENT: |
4089 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
4090 | goto end; | |
4091 | default: | |
0f0a81b5 DG |
4092 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
4093 | goto end; | |
4af16958 | 4094 | } |
dcf266c0 | 4095 | } |
4af16958 | 4096 | if (directory) { |
cce35f91 | 4097 | size_t file_path_root_len; |
dcf266c0 | 4098 | |
cce35f91 JG |
4099 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
4100 | LTTNG_PATH_MAX); | |
4101 | if (ret) { | |
4102 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
4103 | goto end; |
4104 | } | |
4105 | ||
cce35f91 JG |
4106 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
4107 | if (ret) { | |
dcf266c0 | 4108 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
4109 | goto end; |
4110 | } | |
4111 | ||
cce35f91 JG |
4112 | if (file_path.data[file_path.size - 1] != '/') { |
4113 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
4114 | if (ret) { | |
4115 | ret = -LTTNG_ERR_NOMEM; | |
4116 | goto end; | |
4117 | } | |
dcf266c0 | 4118 | } |
cce35f91 | 4119 | file_path_root_len = file_path.size; |
dcf266c0 JG |
4120 | |
4121 | /* Search for *.lttng files */ | |
9a2df626 MJ |
4122 | for (;;) { |
4123 | size_t file_name_len; | |
4124 | struct dirent *result; | |
4125 | ||
4126 | /* | |
4127 | * When the end of the directory stream is reached, NULL | |
4128 | * is returned and errno is kept unchanged. When an | |
4129 | * error occurs, NULL is returned and errno is set | |
4130 | * accordingly. To distinguish between the two, set | |
4131 | * errno to zero before calling readdir(). | |
4132 | * | |
4133 | * On success, readdir() returns a pointer to a dirent | |
4134 | * structure. This structure may be statically | |
4135 | * allocated, do not attempt to free(3) it. | |
4136 | */ | |
4137 | errno = 0; | |
4138 | result = readdir(directory); | |
4139 | ||
ff86d8d0 | 4140 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
4141 | if (!result) { |
4142 | if (errno) { | |
4143 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
4144 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
4145 | goto end; | |
4146 | } | |
4147 | break; | |
4148 | } | |
4149 | ||
4150 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
4151 | |
4152 | if (file_name_len <= | |
4153 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
4154 | continue; | |
4155 | } | |
4156 | ||
cce35f91 JG |
4157 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
4158 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
4159 | result->d_name, | |
4160 | /* +1 to account for NULL terminator. */ | |
4161 | file_path.size + file_name_len + 1, | |
4162 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
4163 | continue; |
4164 | } | |
4165 | ||
cce35f91 | 4166 | /* Does the file end with .lttng? */ |
dcf266c0 | 4167 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
4168 | result->d_name + file_name_len - sizeof( |
4169 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
4170 | continue; |
4171 | } | |
4172 | ||
cce35f91 JG |
4173 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
4174 | file_name_len + 1); | |
4175 | if (ret) { | |
4176 | ret = -LTTNG_ERR_NOMEM; | |
4177 | goto end; | |
4178 | } | |
dcf266c0 | 4179 | |
cce35f91 | 4180 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 4181 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
4182 | if (session_name && |
4183 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
4184 | session_found = 1; |
4185 | break; | |
4186 | } | |
55c9e7ca JR |
4187 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4188 | goto end; | |
4189 | } | |
cce35f91 JG |
4190 | /* |
4191 | * Reset the buffer's size to the location of the | |
4192 | * path's trailing '/'. | |
4193 | */ | |
4194 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
4195 | file_path_root_len); | |
4196 | if (ret) { | |
4197 | ret = -LTTNG_ERR_UNK; | |
4198 | goto end; | |
4199 | } | |
dcf266c0 | 4200 | } |
dcf266c0 JG |
4201 | } else { |
4202 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 4203 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4204 | if (ret) { |
4205 | goto end; | |
dcf266c0 | 4206 | } |
55c9e7ca | 4207 | session_found = 1; |
dcf266c0 JG |
4208 | } |
4209 | ||
55c9e7ca | 4210 | ret = 0; |
dcf266c0 JG |
4211 | end: |
4212 | if (directory) { | |
4213 | if (closedir(directory)) { | |
4214 | PERROR("closedir"); | |
4215 | } | |
4216 | } | |
55c9e7ca JR |
4217 | if (!ret && !session_found) { |
4218 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 4219 | } |
cce35f91 | 4220 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
4221 | return ret; |
4222 | } | |
4223 | ||
ab38c13f DG |
4224 | /* |
4225 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 4226 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
4227 | */ |
4228 | static int validate_path_creds(const char *path) | |
4229 | { | |
4230 | int ret, uid = getuid(); | |
4231 | struct stat buf; | |
4232 | ||
4233 | assert(path); | |
4234 | ||
cf53c06d | 4235 | if (uid == 0) { |
ab38c13f DG |
4236 | goto valid; |
4237 | } | |
4238 | ||
4239 | ret = stat(path, &buf); | |
4240 | if (ret < 0) { | |
4241 | if (errno != ENOENT) { | |
4242 | PERROR("stat"); | |
4243 | } | |
ab38c13f DG |
4244 | goto valid; |
4245 | } | |
4246 | ||
4247 | if (buf.st_uid != uid) { | |
4248 | goto invalid; | |
4249 | } | |
4250 | ||
4251 | valid: | |
ab38c13f | 4252 | return 1; |
cf53c06d DG |
4253 | invalid: |
4254 | return 0; | |
ab38c13f DG |
4255 | } |
4256 | ||
dcf266c0 JG |
4257 | LTTNG_HIDDEN |
4258 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
4259 | int overwrite, unsigned int autoload, |
4260 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4261 | { |
4262 | int ret; | |
6c66fa0f | 4263 | bool session_loaded = false; |
cf53c06d | 4264 | const char *path_ptr = NULL; |
dcf266c0 JG |
4265 | struct session_config_validation_ctx validation_ctx = { 0 }; |
4266 | ||
4267 | ret = init_session_config_validation_ctx(&validation_ctx); | |
4268 | if (ret) { | |
4269 | goto end; | |
4270 | } | |
4271 | ||
4272 | if (!path) { | |
4f00620d | 4273 | const char *home_path; |
ab38c13f DG |
4274 | const char *sys_path; |
4275 | ||
dcf266c0 | 4276 | /* Try home path */ |
ab38c13f | 4277 | home_path = utils_get_home_dir(); |
dcf266c0 | 4278 | if (home_path) { |
ab38c13f | 4279 | char path[PATH_MAX]; |
dcf266c0 | 4280 | |
d4fcf703 DG |
4281 | /* |
4282 | * Try user session configuration path. Ignore error here so we can | |
4283 | * continue loading the system wide sessions. | |
4284 | */ | |
ab38c13f DG |
4285 | if (autoload) { |
4286 | ret = snprintf(path, sizeof(path), | |
4287 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
4288 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
4289 | if (ret < 0) { |
4290 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 4291 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4292 | goto end; |
4293 | } | |
4294 | ||
4295 | /* | |
4296 | * Credentials are only validated for the autoload in order to | |
4297 | * avoid any user session daemon to try to load kernel sessions | |
4298 | * automatically and failing all the times. | |
4299 | */ | |
4300 | ret = validate_path_creds(path); | |
4301 | if (ret) { | |
4302 | path_ptr = path; | |
4303 | } | |
ab38c13f DG |
4304 | } else { |
4305 | ret = snprintf(path, sizeof(path), | |
4306 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
4307 | if (ret < 0) { |
4308 | PERROR("snprintf session home config path"); | |
55c9e7ca | 4309 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4310 | goto end; |
4311 | } | |
4312 | path_ptr = path; | |
ab38c13f | 4313 | } |
cf53c06d DG |
4314 | if (path_ptr) { |
4315 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4316 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
4317 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4318 | goto end; | |
4319 | } | |
4320 | /* | |
4321 | * Continue even if the session was found since we have to try | |
4322 | * the system wide sessions. | |
4323 | */ | |
6c66fa0f | 4324 | session_loaded = true; |
ab38c13f | 4325 | } |
d4fcf703 | 4326 | } |
ab38c13f | 4327 | |
cf53c06d DG |
4328 | /* Reset path pointer for the system wide dir. */ |
4329 | path_ptr = NULL; | |
4330 | ||
d4fcf703 DG |
4331 | /* Try system wide configuration directory. */ |
4332 | if (autoload) { | |
4333 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
4334 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
4335 | ret = validate_path_creds(sys_path); |
4336 | if (ret) { | |
4337 | path_ptr = sys_path; | |
4338 | } | |
d4fcf703 | 4339 | } else { |
cf53c06d DG |
4340 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
4341 | path_ptr = sys_path; | |
d4fcf703 DG |
4342 | } |
4343 | ||
cf53c06d DG |
4344 | if (path_ptr) { |
4345 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4346 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
4347 | if (!ret) { |
4348 | session_loaded = true; | |
4349 | } | |
55c9e7ca JR |
4350 | } else { |
4351 | ret = 0; | |
dcf266c0 JG |
4352 | } |
4353 | } else { | |
4354 | ret = access(path, F_OK); | |
4355 | if (ret < 0) { | |
4356 | PERROR("access"); | |
4357 | switch (errno) { | |
4358 | case ENOENT: | |
4359 | ret = -LTTNG_ERR_INVALID; | |
4360 | WARN("Session configuration path does not exist."); | |
4361 | break; | |
4362 | case EACCES: | |
4363 | ret = -LTTNG_ERR_EPERM; | |
4364 | break; | |
4365 | default: | |
4366 | ret = -LTTNG_ERR_UNK; | |
4367 | break; | |
4368 | } | |
4369 | goto end; | |
4370 | } | |
4371 | ||
4372 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 4373 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4374 | } |
4375 | end: | |
4376 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
4377 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
4378 | /* | |
4379 | * Don't report an error if no sessions are found when called | |
4380 | * without a session_name or a search path. | |
4381 | */ | |
4382 | ret = 0; | |
4383 | } | |
6c66fa0f JG |
4384 | |
4385 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
4386 | /* A matching session was found in one of the search paths. */ | |
4387 | ret = 0; | |
4388 | } | |
dcf266c0 JG |
4389 | return ret; |
4390 | } | |
56766c75 JG |
4391 | |
4392 | static | |
4393 | void __attribute__((destructor)) session_config_exit(void) | |
4394 | { | |
4395 | xmlCleanupParser(); | |
4396 | } |