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 <ctype.h> |
1501a7f3 JG |
11 | #include <stdio.h> |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
36f2332b | 14 | #include <inttypes.h> |
dcf266c0 JG |
15 | #include <dirent.h> |
16 | #include <unistd.h> | |
17 | #include <sys/types.h> | |
18 | #include <sys/stat.h> | |
6c66fa0f | 19 | #include <stdbool.h> |
1501a7f3 JG |
20 | |
21 | #include <common/defaults.h> | |
22 | #include <common/error.h> | |
23 | #include <common/macros.h> | |
24 | #include <common/utils.h> | |
cce35f91 | 25 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 26 | #include <common/compat/getenv.h> |
fb198a11 JG |
27 | #include <lttng/lttng-error.h> |
28 | #include <libxml/parser.h> | |
29 | #include <libxml/valid.h> | |
30 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
31 | #include <libxml/tree.h> |
32 | #include <lttng/lttng.h> | |
33 | #include <lttng/snapshot.h> | |
259c2674 | 34 | #include <lttng/rotation.h> |
c1e83fb4 | 35 | #include <lttng/userspace-probe.h> |
1501a7f3 | 36 | |
f40ef1d5 | 37 | #include "session-config.h" |
36f2332b | 38 | #include "config-internal.h" |
1501a7f3 | 39 | |
c1e83fb4 FD |
40 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
41 | ||
1501a7f3 JG |
42 | struct handler_filter_args { |
43 | const char* section; | |
44 | config_entry_handler_cb handler; | |
45 | void *user_data; | |
46 | }; | |
47 | ||
dcf266c0 JG |
48 | struct session_config_validation_ctx { |
49 | xmlSchemaParserCtxtPtr parser_ctx; | |
50 | xmlSchemaPtr schema; | |
51 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
52 | }; | |
53 | ||
72c2e2e1 | 54 | LTTNG_HIDDEN const char * const config_element_all = "all"; |
1501a7f3 JG |
55 | const char * const config_str_yes = "yes"; |
56 | const char * const config_str_true = "true"; | |
57 | const char * const config_str_on = "on"; | |
58 | const char * const config_str_no = "no"; | |
59 | const char * const config_str_false = "false"; | |
60 | const char * const config_str_off = "off"; | |
36f2332b | 61 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 62 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
63 | const char * const config_xml_indent_string = "\t"; |
64 | const char * const config_xml_true = "true"; | |
65 | const char * const config_xml_false = "false"; | |
1501a7f3 | 66 | |
fb198a11 JG |
67 | const char * const config_element_channel = "channel"; |
68 | const char * const config_element_channels = "channels"; | |
69 | const char * const config_element_domain = "domain"; | |
70 | const char * const config_element_domains = "domains"; | |
71 | const char * const config_element_event = "event"; | |
72 | const char * const config_element_events = "events"; | |
73 | const char * const config_element_context = "context"; | |
74 | const char * const config_element_contexts = "contexts"; | |
75 | const char * const config_element_attributes = "attributes"; | |
76 | const char * const config_element_exclusion = "exclusion"; | |
77 | const char * const config_element_exclusions = "exclusions"; | |
78 | const char * const config_element_function_attributes = "function_attributes"; | |
79 | const char * const config_element_probe_attributes = "probe_attributes"; | |
80 | const char * const config_element_symbol_name = "symbol_name"; | |
81 | const char * const config_element_address = "address"; | |
82 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 83 | |
d0687332 JG |
84 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method"; |
85 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
86 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
87 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
88 | LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
89 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
90 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
91 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
92 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
93 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 94 | |
fb198a11 JG |
95 | const char * const config_element_name = "name"; |
96 | const char * const config_element_enabled = "enabled"; | |
97 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
98 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
99 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
100 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
101 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
102 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
103 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
104 | const char * const config_element_output = "output"; |
105 | const char * const config_element_output_type = "output_type"; | |
106 | const char * const config_element_tracefile_size = "tracefile_size"; | |
107 | const char * const config_element_tracefile_count = "tracefile_count"; | |
108 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
109 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
110 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
111 | const char * const config_element_type = "type"; |
112 | const char * const config_element_buffer_type = "buffer_type"; | |
113 | const char * const config_element_session = "session"; | |
114 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
115 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
116 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
117 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
118 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
119 | const char * const config_element_config = "config"; |
120 | const char * const config_element_started = "started"; | |
121 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
122 | const char * const config_element_loglevel = "loglevel"; | |
123 | const char * const config_element_loglevel_type = "loglevel_type"; | |
124 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 125 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
126 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
127 | const char * const config_element_consumer_output = "consumer_output"; | |
128 | const char * const config_element_destination = "destination"; | |
129 | const char * const config_element_path = "path"; | |
130 | const char * const config_element_net_output = "net_output"; | |
131 | const char * const config_element_control_uri = "control_uri"; | |
132 | const char * const config_element_data_uri = "data_uri"; | |
133 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
134 | const char * const config_element_pid = "pid"; |
135 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 136 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
159b042f JG |
137 | |
138 | LTTNG_HIDDEN const char * const config_element_process_attr_id = "id"; | |
139 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
140 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
141 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
142 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
143 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
144 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
145 | LTTNG_HIDDEN const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
146 | LTTNG_HIDDEN const char * const config_element_process_attr_values = "process_attr_values"; | |
147 | LTTNG_HIDDEN const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
148 | LTTNG_HIDDEN const char * const config_element_process_attr_pid_value = "pid"; | |
149 | LTTNG_HIDDEN const char * const config_element_process_attr_vpid_value = "vpid"; | |
150 | LTTNG_HIDDEN const char * const config_element_process_attr_uid_value = "uid"; | |
151 | LTTNG_HIDDEN const char * const config_element_process_attr_vuid_value = "vuid"; | |
152 | LTTNG_HIDDEN const char * const config_element_process_attr_gid_value = "gid"; | |
153 | LTTNG_HIDDEN const char * const config_element_process_attr_vgid_value = "vgid"; | |
154 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 155 | |
f7af9a72 JG |
156 | /* Used for support of legacy tracker serialization (< 2.12). */ |
157 | LTTNG_HIDDEN const char * const config_element_trackers_legacy = "trackers"; | |
158 | LTTNG_HIDDEN const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
159 | LTTNG_HIDDEN const char * const config_element_tracker_targets_legacy = "targets"; | |
160 | LTTNG_HIDDEN const char * const config_element_tracker_pid_target_legacy = "pid_target"; | |
161 | LTTNG_HIDDEN const char * const config_element_tracker_pid_legacy = "pid"; | |
162 | ||
ce6176f2 JG |
163 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
164 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
165 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
166 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
167 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 168 | |
fb198a11 JG |
169 | const char * const config_domain_type_kernel = "KERNEL"; |
170 | const char * const config_domain_type_ust = "UST"; | |
171 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 172 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 173 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
174 | |
175 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
176 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
177 | const char * const config_buffer_type_global = "GLOBAL"; | |
178 | ||
179 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
180 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
181 | ||
182 | const char * const config_output_type_splice = "SPLICE"; | |
183 | const char * const config_output_type_mmap = "MMAP"; | |
184 | ||
185 | const char * const config_loglevel_type_all = "ALL"; | |
186 | const char * const config_loglevel_type_range = "RANGE"; | |
187 | const char * const config_loglevel_type_single = "SINGLE"; | |
188 | ||
189 | const char * const config_event_type_all = "ALL"; | |
190 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
191 | const char * const config_event_type_probe = "PROBE"; | |
a416382b | 192 | LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
193 | const char * const config_event_type_function = "FUNCTION"; |
194 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
195 | const char * const config_event_type_noop = "NOOP"; | |
196 | const char * const config_event_type_syscall = "SYSCALL"; | |
197 | const char * const config_event_type_kprobe = "KPROBE"; | |
198 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
199 | ||
200 | const char * const config_event_context_pid = "PID"; | |
201 | const char * const config_event_context_procname = "PROCNAME"; | |
202 | const char * const config_event_context_prio = "PRIO"; | |
203 | const char * const config_event_context_nice = "NICE"; | |
204 | const char * const config_event_context_vpid = "VPID"; | |
205 | const char * const config_event_context_tid = "TID"; | |
206 | const char * const config_event_context_vtid = "VTID"; | |
207 | const char * const config_event_context_ppid = "PPID"; | |
208 | const char * const config_event_context_vppid = "VPPID"; | |
209 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
210 | const char * const config_event_context_hostname = "HOSTNAME"; | |
211 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 212 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
213 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
214 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
215 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
216 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
217 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
218 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
219 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
40e14884 MJ |
220 | LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS"; |
221 | LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS"; | |
222 | LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS"; | |
223 | LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS"; | |
224 | LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS"; | |
d37ac3cd | 225 | LTTNG_HIDDEN const char * const config_event_context_time_ns = "TIME_NS"; |
40e14884 MJ |
226 | LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS"; |
227 | LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS"; | |
499cbfa1 MJ |
228 | LTTNG_HIDDEN const char * const config_event_context_uid = "UID"; |
229 | LTTNG_HIDDEN const char * const config_event_context_euid = "EUID"; | |
230 | LTTNG_HIDDEN const char * const config_event_context_suid = "SUID"; | |
231 | LTTNG_HIDDEN const char * const config_event_context_gid = "GID"; | |
232 | LTTNG_HIDDEN const char * const config_event_context_egid = "EGID"; | |
233 | LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID"; | |
234 | LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID"; | |
235 | LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID"; | |
236 | LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID"; | |
237 | LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID"; | |
238 | LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID"; | |
239 | LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 240 | |
fbd987c9 JG |
241 | /* Deprecated symbols */ |
242 | const char * const config_element_perf; | |
243 | ||
d7b645e2 JR |
244 | enum process_event_node_phase { |
245 | CREATION = 0, | |
246 | ENABLE = 1, | |
247 | }; | |
248 | ||
dcf266c0 JG |
249 | struct consumer_output { |
250 | int enabled; | |
251 | char *path; | |
252 | char *control_uri; | |
253 | char *data_uri; | |
254 | }; | |
255 | ||
1501a7f3 JG |
256 | static int config_entry_handler_filter(struct handler_filter_args *args, |
257 | const char *section, const char *name, const char *value) | |
258 | { | |
259 | int ret = 0; | |
260 | struct config_entry entry = { section, name, value }; | |
261 | ||
a0377dfe | 262 | LTTNG_ASSERT(args); |
1501a7f3 JG |
263 | |
264 | if (!section || !name || !value) { | |
265 | ret = -EIO; | |
266 | goto end; | |
267 | } | |
268 | ||
269 | if (args->section) { | |
270 | if (strcmp(args->section, section)) { | |
271 | goto end; | |
272 | } | |
273 | } | |
274 | ||
275 | ret = args->handler(&entry, args->user_data); | |
276 | end: | |
277 | return ret; | |
278 | } | |
279 | ||
280 | LTTNG_HIDDEN | |
281 | int config_get_section_entries(const char *override_path, const char *section, | |
282 | config_entry_handler_cb handler, void *user_data) | |
283 | { | |
284 | int ret = 0; | |
4f00620d | 285 | const char *path; |
1501a7f3 JG |
286 | FILE *config_file = NULL; |
287 | struct handler_filter_args filter = { section, handler, user_data }; | |
288 | ||
7ab02a27 DG |
289 | /* First, try system-wide conf. file. */ |
290 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
291 | ||
292 | config_file = fopen(path, "r"); | |
293 | if (config_file) { | |
294 | DBG("Loading daemon conf file at %s", path); | |
295 | /* | |
296 | * Return value is not very important here since error or not, we | |
297 | * continue and try the next possible conf. file. | |
298 | */ | |
299 | (void) ini_parse_file(config_file, | |
300 | (ini_entry_handler) config_entry_handler_filter, | |
301 | (void *) &filter); | |
302 | fclose(config_file); | |
303 | } | |
304 | ||
305 | /* Second is the user local configuration. */ | |
306 | path = utils_get_home_dir(); | |
307 | if (path) { | |
308 | char fullpath[PATH_MAX]; | |
309 | ||
310 | ret = snprintf(fullpath, sizeof(fullpath), | |
311 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
312 | if (ret < 0) { | |
313 | PERROR("snprintf user conf. path"); | |
314 | goto error; | |
315 | } | |
316 | ||
317 | config_file = fopen(fullpath, "r"); | |
318 | if (config_file) { | |
319 | DBG("Loading daemon user conf file at %s", path); | |
320 | /* | |
321 | * Return value is not very important here since error or not, we | |
322 | * continue and try the next possible conf. file. | |
323 | */ | |
324 | (void) ini_parse_file(config_file, | |
325 | (ini_entry_handler) config_entry_handler_filter, | |
326 | (void *) &filter); | |
327 | fclose(config_file); | |
328 | } | |
329 | } | |
330 | ||
331 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
332 | if (override_path) { |
333 | config_file = fopen(override_path, "r"); | |
334 | if (config_file) { | |
7ab02a27 DG |
335 | DBG("Loading daemon command line conf file at %s", override_path); |
336 | (void) ini_parse_file(config_file, | |
337 | (ini_entry_handler) config_entry_handler_filter, | |
338 | (void *) &filter); | |
339 | fclose(config_file); | |
1501a7f3 JG |
340 | } else { |
341 | ERR("Failed to open daemon configuration file at %s", | |
342 | override_path); | |
343 | ret = -ENOENT; | |
7ab02a27 | 344 | goto error; |
1501a7f3 JG |
345 | } |
346 | } | |
347 | ||
7ab02a27 DG |
348 | /* Everything went well. */ |
349 | ret = 0; | |
1501a7f3 | 350 | |
7ab02a27 | 351 | error: |
1501a7f3 JG |
352 | return ret; |
353 | } | |
354 | ||
355 | LTTNG_HIDDEN | |
356 | int config_parse_value(const char *value) | |
357 | { | |
358 | int i, ret = 0; | |
359 | char *endptr, *lower_str; | |
360 | size_t len; | |
361 | unsigned long v; | |
362 | ||
363 | len = strlen(value); | |
364 | if (!len) { | |
365 | ret = -1; | |
366 | goto end; | |
367 | } | |
368 | ||
369 | v = strtoul(value, &endptr, 10); | |
370 | if (endptr != value) { | |
371 | ret = v; | |
372 | goto end; | |
373 | } | |
374 | ||
375 | lower_str = zmalloc(len + 1); | |
376 | if (!lower_str) { | |
377 | PERROR("zmalloc"); | |
378 | ret = -errno; | |
379 | goto end; | |
380 | } | |
381 | ||
382 | for (i = 0; i < len; i++) { | |
383 | lower_str[i] = tolower(value[i]); | |
384 | } | |
385 | ||
386 | if (!strcmp(lower_str, config_str_yes) || | |
387 | !strcmp(lower_str, config_str_true) || | |
388 | !strcmp(lower_str, config_str_on)) { | |
389 | ret = 1; | |
390 | } else if (!strcmp(lower_str, config_str_no) || | |
391 | !strcmp(lower_str, config_str_false) || | |
392 | !strcmp(lower_str, config_str_off)) { | |
393 | ret = 0; | |
394 | } else { | |
395 | ret = -1; | |
396 | } | |
397 | ||
398 | free(lower_str); | |
399 | end: | |
400 | return ret; | |
401 | } | |
36f2332b JG |
402 | |
403 | /* | |
404 | * Returns a xmlChar string which must be released using xmlFree(). | |
405 | */ | |
406 | static xmlChar *encode_string(const char *in_str) | |
407 | { | |
408 | xmlChar *out_str = NULL; | |
409 | xmlCharEncodingHandlerPtr handler; | |
410 | int out_len, ret, in_len; | |
411 | ||
a0377dfe | 412 | LTTNG_ASSERT(in_str); |
36f2332b JG |
413 | |
414 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
415 | if (!handler) { | |
416 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
417 | goto end; | |
418 | } | |
419 | ||
420 | in_len = strlen(in_str); | |
421 | /* | |
f76d886f JG |
422 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
423 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 424 | */ |
f76d886f | 425 | out_len = (in_len * 4) + 1; |
36f2332b JG |
426 | out_str = xmlMalloc(out_len); |
427 | if (!out_str) { | |
428 | goto end; | |
429 | } | |
430 | ||
431 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
432 | if (ret < 0) { | |
433 | xmlFree(out_str); | |
434 | out_str = NULL; | |
435 | goto end; | |
436 | } | |
437 | ||
438 | /* out_len is now the size of out_str */ | |
439 | out_str[out_len] = '\0'; | |
440 | end: | |
441 | return out_str; | |
442 | } | |
443 | ||
444 | LTTNG_HIDDEN | |
705bb62f | 445 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
446 | { |
447 | int ret; | |
448 | struct config_writer *writer; | |
449 | xmlOutputBufferPtr buffer; | |
450 | ||
451 | writer = zmalloc(sizeof(struct config_writer)); | |
452 | if (!writer) { | |
453 | PERROR("zmalloc config_writer_create"); | |
454 | goto end; | |
455 | } | |
456 | ||
457 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
458 | if (!buffer) { | |
459 | goto error_destroy; | |
460 | } | |
461 | ||
462 | writer->writer = xmlNewTextWriter(buffer); | |
463 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
464 | config_xml_encoding, NULL); | |
465 | if (ret < 0) { | |
466 | goto error_destroy; | |
467 | } | |
468 | ||
469 | ret = xmlTextWriterSetIndentString(writer->writer, | |
470 | BAD_CAST config_xml_indent_string); | |
705bb62f | 471 | if (ret) { |
36f2332b JG |
472 | goto error_destroy; |
473 | } | |
474 | ||
705bb62f JRJ |
475 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
476 | if (ret) { | |
36f2332b JG |
477 | goto error_destroy; |
478 | } | |
479 | ||
480 | end: | |
481 | return writer; | |
482 | error_destroy: | |
483 | config_writer_destroy(writer); | |
484 | return NULL; | |
485 | } | |
486 | ||
487 | LTTNG_HIDDEN | |
488 | int config_writer_destroy(struct config_writer *writer) | |
489 | { | |
490 | int ret = 0; | |
491 | ||
492 | if (!writer) { | |
493 | ret = -EINVAL; | |
494 | goto end; | |
495 | } | |
496 | ||
497 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
498 | WARN("Could not close XML document"); | |
499 | ret = -EIO; | |
500 | } | |
501 | ||
502 | if (writer->writer) { | |
503 | xmlFreeTextWriter(writer->writer); | |
504 | } | |
505 | ||
506 | free(writer); | |
507 | end: | |
508 | return ret; | |
509 | } | |
510 | ||
511 | LTTNG_HIDDEN | |
512 | int config_writer_open_element(struct config_writer *writer, | |
513 | const char *element_name) | |
514 | { | |
515 | int ret; | |
516 | xmlChar *encoded_element_name; | |
517 | ||
518 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
519 | ret = -1; | |
520 | goto end; | |
521 | } | |
522 | ||
523 | encoded_element_name = encode_string(element_name); | |
524 | if (!encoded_element_name) { | |
525 | ret = -1; | |
526 | goto end; | |
527 | } | |
528 | ||
529 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
530 | xmlFree(encoded_element_name); | |
531 | end: | |
28676a1d | 532 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
533 | } |
534 | ||
e10b6a1c JG |
535 | LTTNG_HIDDEN |
536 | int config_writer_write_attribute(struct config_writer *writer, | |
537 | const char *name, const char *value) | |
538 | { | |
539 | int ret; | |
540 | xmlChar *encoded_name = NULL; | |
541 | xmlChar *encoded_value = NULL; | |
542 | ||
543 | if (!writer || !writer->writer || !name || !name[0]) { | |
544 | ret = -1; | |
545 | goto end; | |
546 | } | |
547 | ||
548 | encoded_name = encode_string(name); | |
549 | if (!encoded_name) { | |
550 | ret = -1; | |
551 | goto end; | |
552 | } | |
553 | ||
554 | encoded_value = encode_string(value); | |
555 | if (!encoded_value) { | |
556 | ret = -1; | |
557 | goto end; | |
558 | } | |
559 | ||
560 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
561 | encoded_value); | |
562 | end: | |
563 | xmlFree(encoded_name); | |
564 | xmlFree(encoded_value); | |
565 | return ret >= 0 ? 0 : ret; | |
566 | } | |
567 | ||
36f2332b JG |
568 | LTTNG_HIDDEN |
569 | int config_writer_close_element(struct config_writer *writer) | |
570 | { | |
571 | int ret; | |
572 | ||
573 | if (!writer || !writer->writer) { | |
574 | ret = -1; | |
575 | goto end; | |
576 | } | |
577 | ||
578 | ret = xmlTextWriterEndElement(writer->writer); | |
579 | end: | |
28676a1d | 580 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
581 | } |
582 | ||
583 | LTTNG_HIDDEN | |
584 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
585 | const char *element_name, uint64_t value) | |
586 | { | |
587 | int ret; | |
588 | xmlChar *encoded_element_name; | |
589 | ||
590 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
591 | ret = -1; | |
592 | goto end; | |
593 | } | |
594 | ||
595 | encoded_element_name = encode_string(element_name); | |
596 | if (!encoded_element_name) { | |
597 | ret = -1; | |
598 | goto end; | |
599 | } | |
600 | ||
601 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
602 | encoded_element_name, "%" PRIu64, value); | |
603 | xmlFree(encoded_element_name); | |
604 | end: | |
28676a1d | 605 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
606 | } |
607 | ||
608 | LTTNG_HIDDEN | |
609 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
610 | const char *element_name, int64_t value) | |
611 | { | |
612 | int ret; | |
613 | xmlChar *encoded_element_name; | |
614 | ||
615 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
616 | ret = -1; | |
617 | goto end; | |
618 | } | |
619 | ||
620 | encoded_element_name = encode_string(element_name); | |
621 | if (!encoded_element_name) { | |
622 | ret = -1; | |
623 | goto end; | |
624 | } | |
625 | ||
626 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
627 | encoded_element_name, "%" PRIi64, value); | |
628 | xmlFree(encoded_element_name); | |
629 | end: | |
28676a1d | 630 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
631 | } |
632 | ||
633 | LTTNG_HIDDEN | |
634 | int config_writer_write_element_bool(struct config_writer *writer, | |
635 | const char *element_name, int value) | |
636 | { | |
637 | return config_writer_write_element_string(writer, element_name, | |
638 | value ? config_xml_true : config_xml_false); | |
639 | } | |
640 | ||
2b166400 JR |
641 | LTTNG_HIDDEN |
642 | int config_writer_write_element_double(struct config_writer *writer, | |
643 | const char *element_name, | |
644 | double value) | |
645 | { | |
646 | int ret; | |
647 | xmlChar *encoded_element_name; | |
648 | ||
649 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
650 | ret = -1; | |
651 | goto end; | |
652 | } | |
653 | ||
654 | encoded_element_name = encode_string(element_name); | |
655 | if (!encoded_element_name) { | |
656 | ret = -1; | |
657 | goto end; | |
658 | } | |
659 | ||
660 | ret = xmlTextWriterWriteFormatElement( | |
661 | writer->writer, encoded_element_name, "%f", value); | |
662 | xmlFree(encoded_element_name); | |
663 | end: | |
664 | return ret >= 0 ? 0 : ret; | |
665 | } | |
666 | ||
36f2332b JG |
667 | LTTNG_HIDDEN |
668 | int config_writer_write_element_string(struct config_writer *writer, | |
669 | const char *element_name, const char *value) | |
670 | { | |
671 | int ret; | |
672 | xmlChar *encoded_element_name = NULL; | |
673 | xmlChar *encoded_value = NULL; | |
674 | ||
675 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
676 | !value) { | |
677 | ret = -1; | |
678 | goto end; | |
679 | } | |
680 | ||
681 | encoded_element_name = encode_string(element_name); | |
682 | if (!encoded_element_name) { | |
683 | ret = -1; | |
684 | goto end; | |
685 | } | |
686 | ||
687 | encoded_value = encode_string(value); | |
688 | if (!encoded_value) { | |
689 | ret = -1; | |
690 | goto end; | |
691 | } | |
692 | ||
693 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 694 | encoded_value); |
36f2332b JG |
695 | end: |
696 | xmlFree(encoded_element_name); | |
697 | xmlFree(encoded_value); | |
28676a1d | 698 | return ret >= 0 ? 0 : ret; |
36f2332b | 699 | } |
dcf266c0 JG |
700 | |
701 | static | |
702 | void xml_error_handler(void *ctx, const char *format, ...) | |
703 | { | |
704 | char *errMsg; | |
705 | va_list args; | |
706 | int ret; | |
707 | ||
708 | va_start(args, format); | |
709 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 710 | va_end(args); |
dcf266c0 JG |
711 | if (ret == -1) { |
712 | ERR("String allocation failed in xml error handler"); | |
713 | return; | |
714 | } | |
dcf266c0 JG |
715 | |
716 | fprintf(stderr, "XML Error: %s", errMsg); | |
717 | free(errMsg); | |
718 | } | |
719 | ||
720 | static | |
721 | void fini_session_config_validation_ctx( | |
722 | struct session_config_validation_ctx *ctx) | |
723 | { | |
724 | if (ctx->parser_ctx) { | |
725 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
726 | } | |
727 | ||
728 | if (ctx->schema) { | |
729 | xmlSchemaFree(ctx->schema); | |
730 | } | |
731 | ||
732 | if (ctx->schema_validation_ctx) { | |
733 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
734 | } | |
735 | ||
736 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
737 | } | |
738 | ||
54e399cb | 739 | static |
a3ecaea8 | 740 | char *get_session_config_xsd_path(void) |
54e399cb JG |
741 | { |
742 | char *xsd_path; | |
e8fa9fb0 | 743 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
744 | size_t base_path_len; |
745 | size_t max_path_len; | |
746 | ||
747 | if (!base_path) { | |
748 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
749 | } | |
750 | ||
751 | base_path_len = strlen(base_path); | |
752 | max_path_len = base_path_len + | |
753 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
754 | xsd_path = zmalloc(max_path_len); | |
755 | if (!xsd_path) { | |
756 | goto end; | |
757 | } | |
758 | ||
00a7f6f8 | 759 | strcpy(xsd_path, base_path); |
54e399cb JG |
760 | if (xsd_path[base_path_len - 1] != '/') { |
761 | xsd_path[base_path_len++] = '/'; | |
762 | } | |
763 | ||
00a7f6f8 | 764 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
765 | end: |
766 | return xsd_path; | |
767 | } | |
768 | ||
dcf266c0 JG |
769 | static |
770 | int init_session_config_validation_ctx( | |
771 | struct session_config_validation_ctx *ctx) | |
772 | { | |
773 | int ret; | |
54e399cb JG |
774 | char *xsd_path = get_session_config_xsd_path(); |
775 | ||
776 | if (!xsd_path) { | |
777 | ret = -LTTNG_ERR_NOMEM; | |
778 | goto end; | |
779 | } | |
dcf266c0 | 780 | |
54e399cb | 781 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
782 | if (!ctx->parser_ctx) { |
783 | ERR("XSD parser context creation failed"); | |
784 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
785 | goto end; | |
786 | } | |
787 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
788 | xml_error_handler, NULL); | |
789 | ||
790 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
791 | if (!ctx->schema) { | |
792 | ERR("XSD parsing failed"); | |
793 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
794 | goto end; | |
795 | } | |
796 | ||
797 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
798 | if (!ctx->schema_validation_ctx) { | |
799 | ERR("XSD validation context creation failed"); | |
800 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
801 | goto end; | |
802 | } | |
803 | ||
804 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
805 | xml_error_handler, NULL); | |
806 | ret = 0; | |
807 | ||
808 | end: | |
809 | if (ret) { | |
810 | fini_session_config_validation_ctx(ctx); | |
811 | } | |
812 | ||
54e399cb | 813 | free(xsd_path); |
dcf266c0 JG |
814 | return ret; |
815 | } | |
816 | ||
817 | static | |
818 | int parse_uint(xmlChar *str, uint64_t *val) | |
819 | { | |
820 | int ret; | |
821 | char *endptr; | |
822 | ||
823 | if (!str || !val) { | |
824 | ret = -1; | |
825 | goto end; | |
826 | } | |
827 | ||
828 | *val = strtoull((const char *) str, &endptr, 10); | |
829 | if (!endptr || *endptr) { | |
830 | ret = -1; | |
831 | } else { | |
832 | ret = 0; | |
833 | } | |
834 | ||
835 | end: | |
836 | return ret; | |
837 | } | |
838 | ||
839 | static | |
840 | int parse_int(xmlChar *str, int64_t *val) | |
841 | { | |
842 | int ret; | |
843 | char *endptr; | |
844 | ||
845 | if (!str || !val) { | |
846 | ret = -1; | |
847 | goto end; | |
848 | } | |
849 | ||
850 | *val = strtoll((const char *) str, &endptr, 10); | |
851 | if (!endptr || *endptr) { | |
852 | ret = -1; | |
853 | } else { | |
854 | ret = 0; | |
855 | } | |
856 | ||
857 | end: | |
858 | return ret; | |
859 | } | |
860 | ||
861 | static | |
862 | int parse_bool(xmlChar *str, int *val) | |
863 | { | |
864 | int ret = 0; | |
865 | ||
866 | if (!str || !val) { | |
867 | ret = -1; | |
868 | goto end; | |
869 | } | |
870 | ||
47945b17 SM |
871 | if (!strcmp((const char *) str, config_xml_true) || |
872 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 873 | *val = 1; |
47945b17 SM |
874 | } else if (!strcmp((const char *) str, config_xml_false) || |
875 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
876 | *val = 0; |
877 | } else { | |
a22a57cb | 878 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
879 | (const char *) str); |
880 | ret = -1; | |
881 | } | |
882 | end: | |
883 | return ret; | |
884 | } | |
885 | ||
886 | static | |
887 | int get_domain_type(xmlChar *domain) | |
888 | { | |
889 | int ret; | |
890 | ||
891 | if (!domain) { | |
892 | goto error; | |
893 | } | |
894 | ||
895 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
896 | ret = LTTNG_DOMAIN_KERNEL; | |
897 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
898 | ret = LTTNG_DOMAIN_UST; | |
899 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
900 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
901 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
902 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
903 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
904 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
905 | } else { |
906 | goto error; | |
907 | } | |
908 | ||
909 | return ret; | |
910 | error: | |
911 | return -1; | |
912 | } | |
913 | ||
914 | static | |
915 | int get_buffer_type(xmlChar *buffer_type) | |
916 | { | |
917 | int ret; | |
918 | ||
919 | if (!buffer_type) { | |
920 | goto error; | |
921 | } | |
922 | ||
923 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
924 | ret = LTTNG_BUFFER_GLOBAL; | |
925 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
926 | ret = LTTNG_BUFFER_PER_UID; | |
927 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
928 | ret = LTTNG_BUFFER_PER_PID; | |
929 | } else { | |
930 | goto error; | |
931 | } | |
932 | ||
933 | return ret; | |
934 | error: | |
935 | return -1; | |
936 | } | |
937 | ||
938 | static | |
939 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
940 | { | |
941 | int ret; | |
942 | ||
943 | if (!overwrite_mode) { | |
944 | goto error; | |
945 | } | |
946 | ||
947 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
948 | ret = 1; | |
949 | } else if (!strcmp((char *) overwrite_mode, | |
950 | config_overwrite_mode_discard)) { | |
951 | ret = 0; | |
952 | } else { | |
953 | goto error; | |
954 | } | |
955 | ||
956 | return ret; | |
957 | error: | |
958 | return -1; | |
959 | } | |
960 | ||
961 | static | |
962 | int get_output_type(xmlChar *output_type) | |
963 | { | |
964 | int ret; | |
965 | ||
966 | if (!output_type) { | |
967 | goto error; | |
968 | } | |
969 | ||
970 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
971 | ret = LTTNG_EVENT_MMAP; | |
972 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
973 | ret = LTTNG_EVENT_SPLICE; | |
974 | } else { | |
975 | goto error; | |
976 | } | |
977 | ||
978 | return ret; | |
979 | error: | |
980 | return -1; | |
981 | } | |
982 | ||
983 | static | |
984 | int get_event_type(xmlChar *event_type) | |
985 | { | |
986 | int ret; | |
987 | ||
988 | if (!event_type) { | |
989 | goto error; | |
990 | } | |
991 | ||
992 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
993 | ret = LTTNG_EVENT_ALL; | |
994 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
995 | ret = LTTNG_EVENT_TRACEPOINT; | |
996 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
997 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
998 | } else if (!strcmp((char *) event_type, |
999 | config_event_type_userspace_probe)) { | |
1000 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
1001 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
1002 | ret = LTTNG_EVENT_FUNCTION; | |
1003 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 1004 | config_event_type_function_entry)) { |
dcf266c0 JG |
1005 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
1006 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
1007 | ret = LTTNG_EVENT_NOOP; | |
1008 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
1009 | ret = LTTNG_EVENT_SYSCALL; | |
1010 | } else { | |
1011 | goto error; | |
1012 | } | |
1013 | ||
1014 | return ret; | |
1015 | error: | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | static | |
1020 | int get_loglevel_type(xmlChar *loglevel_type) | |
1021 | { | |
1022 | int ret; | |
1023 | ||
1024 | if (!loglevel_type) { | |
1025 | goto error; | |
1026 | } | |
1027 | ||
1028 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1029 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1030 | } else if (!strcmp((char *) loglevel_type, | |
1031 | config_loglevel_type_range)) { | |
1032 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1033 | } else if (!strcmp((char *) loglevel_type, | |
1034 | config_loglevel_type_single)) { | |
1035 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1036 | } else { | |
1037 | goto error; | |
1038 | } | |
1039 | ||
1040 | return ret; | |
1041 | error: | |
1042 | return -1; | |
1043 | } | |
1044 | ||
1045 | /* | |
1046 | * Return the context type or -1 on error. | |
1047 | */ | |
1048 | static | |
1049 | int get_context_type(xmlChar *context_type) | |
1050 | { | |
1051 | int ret; | |
1052 | ||
1053 | if (!context_type) { | |
1054 | goto error; | |
1055 | } | |
1056 | ||
1057 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1058 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1059 | } else if (!strcmp((char *) context_type, | |
1060 | config_event_context_procname)) { | |
1061 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1062 | } else if (!strcmp((char *) context_type, | |
1063 | config_event_context_prio)) { | |
1064 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1065 | } else if (!strcmp((char *) context_type, | |
1066 | config_event_context_nice)) { | |
1067 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1068 | } else if (!strcmp((char *) context_type, | |
1069 | config_event_context_vpid)) { | |
1070 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1071 | } else if (!strcmp((char *) context_type, | |
1072 | config_event_context_tid)) { | |
1073 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1074 | } else if (!strcmp((char *) context_type, | |
1075 | config_event_context_vtid)) { | |
1076 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1077 | } else if (!strcmp((char *) context_type, | |
1078 | config_event_context_ppid)) { | |
1079 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1080 | } else if (!strcmp((char *) context_type, | |
1081 | config_event_context_vppid)) { | |
1082 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1083 | } else if (!strcmp((char *) context_type, | |
1084 | config_event_context_pthread_id)) { | |
1085 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1086 | } else if (!strcmp((char *) context_type, | |
1087 | config_event_context_hostname)) { | |
1088 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1089 | } else if (!strcmp((char *) context_type, | |
1090 | config_event_context_ip)) { | |
1091 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1092 | } else if (!strcmp((char *) context_type, |
1093 | config_event_context_interruptible)) { | |
1094 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1095 | } else if (!strcmp((char *) context_type, | |
1096 | config_event_context_preemptible)) { | |
1097 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1098 | } else if (!strcmp((char *) context_type, | |
1099 | config_event_context_need_reschedule)) { | |
1100 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1101 | } else if (!strcmp((char *) context_type, | |
1102 | config_event_context_migratable)) { | |
1103 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1104 | } else if (!strcmp((char *) context_type, |
1105 | config_event_context_callstack_user)) { | |
1106 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1107 | } else if (!strcmp((char *) context_type, | |
1108 | config_event_context_callstack_kernel)) { | |
1109 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1110 | } else if (!strcmp((char *) context_type, |
1111 | config_event_context_cgroup_ns)) { | |
1112 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1113 | } else if (!strcmp((char *) context_type, | |
1114 | config_event_context_ipc_ns)) { | |
1115 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1116 | } else if (!strcmp((char *) context_type, | |
1117 | config_event_context_mnt_ns)) { | |
1118 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1119 | } else if (!strcmp((char *) context_type, | |
1120 | config_event_context_net_ns)) { | |
1121 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1122 | } else if (!strcmp((char *) context_type, | |
1123 | config_event_context_pid_ns)) { | |
1124 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
1125 | } else if (!strcmp((char *) context_type, |
1126 | config_event_context_time_ns)) { | |
1127 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
1128 | } else if (!strcmp((char *) context_type, |
1129 | config_event_context_user_ns)) { | |
1130 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1131 | } else if (!strcmp((char *) context_type, | |
1132 | config_event_context_uts_ns)) { | |
1133 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1134 | } else if (!strcmp((char *) context_type, |
1135 | config_event_context_uid)) { | |
1136 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1137 | } else if (!strcmp((char *) context_type, | |
1138 | config_event_context_euid)) { | |
1139 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1140 | } else if (!strcmp((char *) context_type, | |
1141 | config_event_context_suid)) { | |
1142 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1143 | } else if (!strcmp((char *) context_type, | |
1144 | config_event_context_gid)) { | |
1145 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1146 | } else if (!strcmp((char *) context_type, | |
1147 | config_event_context_egid)) { | |
1148 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1149 | } else if (!strcmp((char *) context_type, | |
1150 | config_event_context_sgid)) { | |
1151 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1152 | } else if (!strcmp((char *) context_type, | |
1153 | config_event_context_vuid)) { | |
1154 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1155 | } else if (!strcmp((char *) context_type, | |
1156 | config_event_context_veuid)) { | |
1157 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1158 | } else if (!strcmp((char *) context_type, | |
1159 | config_event_context_vsuid)) { | |
1160 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1161 | } else if (!strcmp((char *) context_type, | |
1162 | config_event_context_vgid)) { | |
1163 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1164 | } else if (!strcmp((char *) context_type, | |
1165 | config_event_context_vegid)) { | |
1166 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1167 | } else if (!strcmp((char *) context_type, | |
1168 | config_event_context_vsgid)) { | |
1169 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1170 | } else { |
1171 | goto error; | |
1172 | } | |
1173 | ||
1174 | return ret; | |
1175 | error: | |
1176 | return -1; | |
1177 | } | |
1178 | ||
1179 | static | |
1180 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1181 | { | |
1182 | int ret; | |
1183 | xmlNodePtr node; | |
1184 | ||
1185 | for (node = xmlFirstElementChild(domain_node); node; | |
1186 | node = xmlNextElementSibling(node)) { | |
1187 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1188 | /* domain type */ | |
1189 | xmlChar *node_content = xmlNodeGetContent(node); | |
1190 | if (!node_content) { | |
1191 | ret = -LTTNG_ERR_NOMEM; | |
1192 | goto end; | |
1193 | } | |
1194 | ||
1195 | ret = get_domain_type(node_content); | |
1196 | free(node_content); | |
1197 | if (ret < 0) { | |
1198 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1199 | goto end; | |
1200 | } | |
1201 | ||
1202 | domain->type = ret; | |
1203 | } else if (!strcmp((const char *) node->name, | |
1204 | config_element_buffer_type)) { | |
1205 | /* buffer type */ | |
1206 | xmlChar *node_content = xmlNodeGetContent(node); | |
1207 | if (!node_content) { | |
1208 | ret = -LTTNG_ERR_NOMEM; | |
1209 | goto end; | |
1210 | } | |
1211 | ||
1212 | ret = get_buffer_type(node_content); | |
1213 | free(node_content); | |
1214 | if (ret < 0) { | |
1215 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1216 | goto end; | |
1217 | } | |
1218 | ||
1219 | domain->buf_type = ret; | |
1220 | } | |
1221 | } | |
1222 | ret = 0; | |
1223 | end: | |
1224 | return ret; | |
1225 | } | |
1226 | ||
1227 | static | |
1228 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1229 | char **data_uri) | |
1230 | { | |
1231 | xmlNodePtr node; | |
1232 | ||
1233 | for (node = xmlFirstElementChild(net_output_node); node; | |
1234 | node = xmlNextElementSibling(node)) { | |
1235 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1236 | /* control_uri */ | |
1237 | *control_uri = (char *) xmlNodeGetContent(node); | |
1238 | if (!*control_uri) { | |
1239 | break; | |
1240 | } | |
1241 | } else { | |
1242 | /* data_uri */ | |
1243 | *data_uri = (char *) xmlNodeGetContent(node); | |
1244 | if (!*data_uri) { | |
1245 | break; | |
1246 | } | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1251 | } | |
1252 | ||
1253 | static | |
1254 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1255 | struct consumer_output *output) | |
1256 | { | |
1257 | int ret; | |
1258 | xmlNodePtr node; | |
1259 | ||
a0377dfe | 1260 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1261 | |
1262 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1263 | node = xmlNextElementSibling(node)) { | |
1264 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1265 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1266 | ||
1267 | /* enabled */ | |
1268 | if (!enabled_str) { | |
1269 | ret = -LTTNG_ERR_NOMEM; | |
1270 | goto end; | |
1271 | } | |
1272 | ||
1273 | ret = parse_bool(enabled_str, &output->enabled); | |
1274 | free(enabled_str); | |
1275 | if (ret) { | |
1276 | goto end; | |
1277 | } | |
1278 | } else { | |
1279 | xmlNodePtr output_type_node; | |
1280 | ||
1281 | /* destination */ | |
1282 | output_type_node = xmlFirstElementChild(node); | |
1283 | if (!output_type_node) { | |
1284 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1285 | goto end; | |
1286 | } | |
1287 | ||
1288 | if (!strcmp((const char *) output_type_node->name, | |
1289 | config_element_path)) { | |
1290 | /* path */ | |
1291 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1292 | if (!output->path) { | |
1293 | ret = -LTTNG_ERR_NOMEM; | |
1294 | goto end; | |
1295 | } | |
1296 | } else { | |
1297 | /* net_output */ | |
1298 | ret = get_net_output_uris(output_type_node, | |
1299 | &output->control_uri, &output->data_uri); | |
1300 | if (ret) { | |
1301 | goto end; | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ret = 0; | |
1307 | ||
1308 | end: | |
1309 | if (ret) { | |
1310 | free(output->path); | |
1311 | free(output->control_uri); | |
1312 | free(output->data_uri); | |
1313 | memset(output, 0, sizeof(struct consumer_output)); | |
1314 | } | |
1315 | return ret; | |
1316 | } | |
1317 | ||
1318 | static | |
95681498 JG |
1319 | int create_session_net_output(const char *name, const char *control_uri, |
1320 | const char *data_uri) | |
dcf266c0 JG |
1321 | { |
1322 | int ret; | |
1323 | struct lttng_handle *handle; | |
1324 | const char *uri = NULL; | |
1325 | ||
a0377dfe | 1326 | LTTNG_ASSERT(name); |
dcf266c0 | 1327 | |
95681498 | 1328 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1329 | if (!handle) { |
1330 | ret = -LTTNG_ERR_NOMEM; | |
1331 | goto end; | |
1332 | } | |
1333 | ||
1334 | if (!control_uri || !data_uri) { | |
1335 | uri = control_uri ? control_uri : data_uri; | |
1336 | control_uri = uri; | |
1337 | data_uri = uri; | |
1338 | } | |
1339 | ||
1340 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1341 | lttng_destroy_handle(handle); | |
1342 | end: | |
1343 | return ret; | |
1344 | } | |
1345 | ||
1346 | static | |
1b08cbce JR |
1347 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1348 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1349 | { |
1350 | int ret; | |
1351 | xmlNodePtr node = NULL; | |
1352 | xmlNodePtr snapshot_output_list_node; | |
1353 | xmlNodePtr snapshot_output_node; | |
1354 | ||
a0377dfe | 1355 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
1356 | |
1357 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1358 | if (ret) { | |
1359 | goto end; | |
1360 | } | |
1361 | ||
1362 | if (!output_node) { | |
1363 | goto end; | |
1364 | } | |
1365 | ||
1366 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1367 | ||
1368 | /* Parse and create snapshot outputs */ | |
1369 | ||
1370 | for (snapshot_output_node = | |
1371 | xmlFirstElementChild(snapshot_output_list_node); | |
1372 | snapshot_output_node; snapshot_output_node = | |
1373 | xmlNextElementSibling(snapshot_output_node)) { | |
1374 | char *name = NULL; | |
1375 | uint64_t max_size = UINT64_MAX; | |
1376 | struct consumer_output output = { 0 }; | |
1377 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1378 | const char *control_uri = NULL; |
1379 | const char *data_uri = NULL; | |
1380 | const char *path = NULL; | |
dcf266c0 JG |
1381 | |
1382 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1383 | node = xmlNextElementSibling(node)) { | |
1384 | if (!strcmp((const char *) node->name, | |
1385 | config_element_name)) { | |
1386 | /* name */ | |
1387 | name = (char *) xmlNodeGetContent(node); | |
1388 | if (!name) { | |
1389 | ret = -LTTNG_ERR_NOMEM; | |
1390 | goto error_snapshot_output; | |
1391 | } | |
1392 | } else if (!strcmp((const char *) node->name, | |
1393 | config_element_max_size)) { | |
1394 | xmlChar *content = xmlNodeGetContent(node); | |
1395 | ||
1396 | /* max_size */ | |
1397 | if (!content) { | |
1398 | ret = -LTTNG_ERR_NOMEM; | |
1399 | goto error_snapshot_output; | |
1400 | } | |
1401 | ret = parse_uint(content, &max_size); | |
1402 | free(content); | |
1403 | if (ret) { | |
1404 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1405 | goto error_snapshot_output; | |
1406 | } | |
1407 | } else { | |
1408 | /* consumer_output */ | |
1409 | ret = process_consumer_output(node, &output); | |
1410 | if (ret) { | |
1411 | goto error_snapshot_output; | |
1412 | } | |
1413 | } | |
1414 | } | |
1415 | ||
21a3f144 JR |
1416 | control_uri = output.control_uri; |
1417 | data_uri = output.data_uri; | |
1418 | path = output.path; | |
1419 | ||
1b08cbce JR |
1420 | if (overrides) { |
1421 | if (overrides->path_url) { | |
1b08cbce | 1422 | path = overrides->path_url; |
21a3f144 JR |
1423 | /* Control/data_uri are null */ |
1424 | control_uri = NULL; | |
1425 | data_uri = NULL; | |
1b08cbce JR |
1426 | } else { |
1427 | if (overrides->ctrl_url) { | |
1b08cbce | 1428 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1429 | /* path is null */ |
1430 | path = NULL; | |
1b08cbce JR |
1431 | } |
1432 | if (overrides->data_url) { | |
1b08cbce | 1433 | data_uri = overrides->data_url; |
21a3f144 JR |
1434 | /* path is null */ |
1435 | path = NULL; | |
1b08cbce JR |
1436 | } |
1437 | } | |
1b08cbce JR |
1438 | } |
1439 | ||
dcf266c0 JG |
1440 | snapshot_output = lttng_snapshot_output_create(); |
1441 | if (!snapshot_output) { | |
1442 | ret = -LTTNG_ERR_NOMEM; | |
1443 | goto error_snapshot_output; | |
1444 | } | |
1445 | ||
1446 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1447 | if (ret) { | |
1448 | goto error_snapshot_output; | |
1449 | } | |
1450 | ||
1451 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1452 | if (ret) { | |
1453 | goto error_snapshot_output; | |
1454 | } | |
1455 | ||
1b08cbce JR |
1456 | if (path) { |
1457 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1458 | snapshot_output); |
1459 | if (ret) { | |
1460 | goto error_snapshot_output; | |
1461 | } | |
1462 | } else { | |
1b08cbce JR |
1463 | if (control_uri) { |
1464 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1465 | snapshot_output); |
1466 | if (ret) { | |
1467 | goto error_snapshot_output; | |
1468 | } | |
1469 | } | |
1470 | ||
1b08cbce JR |
1471 | if (data_uri) { |
1472 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1473 | snapshot_output); |
1474 | if (ret) { | |
1475 | goto error_snapshot_output; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1481 | error_snapshot_output: | |
1482 | free(name); | |
1483 | free(output.path); | |
1484 | free(output.control_uri); | |
1485 | free(output.data_uri); | |
1486 | lttng_snapshot_output_destroy(snapshot_output); | |
1487 | if (ret) { | |
1488 | goto end; | |
1489 | } | |
1490 | } | |
1491 | end: | |
1492 | return ret; | |
1493 | } | |
1494 | ||
1495 | static | |
1496 | int create_session(const char *name, | |
dcf266c0 | 1497 | xmlNodePtr output_node, |
1b08cbce JR |
1498 | uint64_t live_timer_interval, |
1499 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1500 | { |
1501 | int ret; | |
1502 | struct consumer_output output = { 0 }; | |
1503 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1504 | const char *control_uri = NULL; |
1505 | const char *data_uri = NULL; | |
1506 | const char *path = NULL; | |
dcf266c0 | 1507 | |
a0377dfe | 1508 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1509 | |
1510 | if (output_node) { | |
1511 | consumer_output_node = xmlFirstElementChild(output_node); | |
1512 | if (!consumer_output_node) { | |
1513 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1514 | goto end; | |
1515 | } | |
1516 | ||
1517 | if (strcmp((const char *) consumer_output_node->name, | |
1518 | config_element_consumer_output)) { | |
1519 | WARN("Invalid output type, expected %s node", | |
1520 | config_element_consumer_output); | |
1521 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1522 | goto end; | |
1523 | } | |
1524 | ||
1525 | ret = process_consumer_output(consumer_output_node, &output); | |
1526 | if (ret) { | |
1527 | goto end; | |
1528 | } | |
1529 | } | |
1530 | ||
21a3f144 JR |
1531 | control_uri = output.control_uri; |
1532 | data_uri = output.data_uri; | |
1533 | path = output.path; | |
1534 | ||
1b08cbce JR |
1535 | /* Check for override and apply them */ |
1536 | if (overrides) { | |
1537 | if (overrides->path_url) { | |
1b08cbce | 1538 | path = overrides->path_url; |
21a3f144 JR |
1539 | /* control/data_uri are null */; |
1540 | control_uri = NULL; | |
1541 | data_uri = NULL; | |
1b08cbce JR |
1542 | } else { |
1543 | if (overrides->ctrl_url) { | |
1b08cbce | 1544 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1545 | /* path is null */ |
1546 | path = NULL; | |
1b08cbce JR |
1547 | } |
1548 | if (overrides->data_url) { | |
1b08cbce | 1549 | data_uri = overrides->data_url; |
21a3f144 JR |
1550 | /* path is null */ |
1551 | path = NULL; | |
1b08cbce JR |
1552 | } |
1553 | } | |
1b08cbce JR |
1554 | } |
1555 | ||
21a3f144 | 1556 | |
1b08cbce | 1557 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1558 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1559 | goto end; | |
1560 | } | |
1561 | ||
1b08cbce | 1562 | if (control_uri || data_uri) { |
dcf266c0 JG |
1563 | /* network destination */ |
1564 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1565 | /* |
1566 | * URLs are provided for sure since the test above make sure that | |
1567 | * with a live timer the data and control URIs are provided. So, | |
1568 | * NULL is passed here and will be set right after. | |
1569 | */ | |
1570 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1571 | } else { |
1572 | ret = lttng_create_session(name, NULL); | |
1573 | } | |
1574 | if (ret) { | |
1575 | goto end; | |
1576 | } | |
1577 | ||
1b08cbce | 1578 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1579 | if (ret) { |
1580 | goto end; | |
dcf266c0 | 1581 | } |
95681498 | 1582 | |
dcf266c0 JG |
1583 | } else { |
1584 | /* either local output or no output */ | |
1b08cbce | 1585 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1586 | if (ret) { |
1587 | goto end; | |
1588 | } | |
1589 | } | |
1590 | end: | |
1591 | free(output.path); | |
1592 | free(output.control_uri); | |
1593 | free(output.data_uri); | |
1594 | return ret; | |
1595 | } | |
c1e83fb4 FD |
1596 | |
1597 | static | |
1598 | struct lttng_userspace_probe_location * | |
1599 | process_userspace_probe_function_attribute_node( | |
1600 | xmlNodePtr attribute_node) | |
1601 | { | |
c1e83fb4 | 1602 | xmlNodePtr function_attribute_node; |
717d2dba | 1603 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1604 | struct lttng_userspace_probe_location *location = NULL; |
1605 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1606 | ||
1607 | /* | |
1608 | * Process userspace probe location function attributes. The order of | |
1609 | * the fields are not guaranteed so we need to iterate over all fields | |
1610 | * and check at the end if everything we need for this location type is | |
1611 | * there. | |
1612 | */ | |
1613 | for (function_attribute_node = | |
1614 | xmlFirstElementChild(attribute_node); | |
1615 | function_attribute_node; | |
1616 | function_attribute_node = xmlNextElementSibling( | |
1617 | function_attribute_node)) { | |
1618 | /* Handle function name, binary path and lookup method. */ | |
1619 | if (!strcmp((const char *) function_attribute_node->name, | |
1620 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1621 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1622 | if (!function_name) { |
c1e83fb4 FD |
1623 | goto error; |
1624 | } | |
1625 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1626 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1627 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1628 | if (!binary_path) { |
c1e83fb4 FD |
1629 | goto error; |
1630 | } | |
1631 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1632 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1633 | char *lookup_method_name; |
c1e83fb4 | 1634 | |
717d2dba JG |
1635 | lookup_method_name = (char *) xmlNodeGetContent( |
1636 | function_attribute_node); | |
c1e83fb4 | 1637 | if (!lookup_method_name) { |
c1e83fb4 FD |
1638 | goto error; |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * function_default lookup method defaults to | |
1643 | * function_elf lookup method at the moment. | |
1644 | */ | |
1645 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1646 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1647 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1648 | if (!lookup_method) { | |
1649 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1650 | } |
1651 | } else { | |
717d2dba JG |
1652 | WARN("Unknown function lookup method"); |
1653 | } | |
1654 | ||
1655 | free(lookup_method_name); | |
1656 | if (!lookup_method) { | |
c1e83fb4 FD |
1657 | goto error; |
1658 | } | |
1659 | } else { | |
1660 | goto error; | |
1661 | } | |
1662 | ||
1663 | /* Check if all the necessary fields were found. */ | |
1664 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1665 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1666 | location = |
1667 | lttng_userspace_probe_location_function_create( | |
1668 | binary_path, function_name, | |
1669 | lookup_method); | |
717d2dba JG |
1670 | lookup_method = NULL; |
1671 | goto error; | |
c1e83fb4 FD |
1672 | } |
1673 | } | |
1674 | error: | |
717d2dba | 1675 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1676 | free(binary_path); |
1677 | free(function_name); | |
c1e83fb4 FD |
1678 | return location; |
1679 | } | |
1680 | ||
1681 | static | |
1682 | struct lttng_userspace_probe_location * | |
1683 | process_userspace_probe_tracepoint_attribute_node( | |
1684 | xmlNodePtr attribute_node) | |
1685 | { | |
c1e83fb4 | 1686 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1687 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1688 | struct lttng_userspace_probe_location *location = NULL; | |
1689 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1690 | ||
1691 | /* | |
1692 | * Process userspace probe location tracepoint attributes. The order of | |
1693 | * the fields are not guaranteed so we need to iterate over all fields | |
1694 | * and check at the end if everything we need for this location type is | |
1695 | * there. | |
1696 | */ | |
1697 | for (tracepoint_attribute_node = | |
1698 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1699 | tracepoint_attribute_node = xmlNextElementSibling( | |
1700 | tracepoint_attribute_node)) { | |
1701 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1702 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1703 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1704 | if (!probe_name) { |
c1e83fb4 FD |
1705 | goto error; |
1706 | } | |
1707 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1708 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1709 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1710 | if (!provider_name) { |
c1e83fb4 FD |
1711 | goto error; |
1712 | } | |
1713 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1714 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1715 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1716 | if (!binary_path) { |
c1e83fb4 FD |
1717 | goto error; |
1718 | } | |
1719 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1720 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1721 | char *lookup_method_name; |
c1e83fb4 | 1722 | |
717d2dba JG |
1723 | lookup_method_name = (char *) xmlNodeGetContent( |
1724 | tracepoint_attribute_node); | |
c1e83fb4 | 1725 | if (!lookup_method_name) { |
c1e83fb4 FD |
1726 | goto error; |
1727 | } | |
1728 | ||
1729 | if (!strcmp(lookup_method_name, | |
1730 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1731 | lookup_method = | |
1732 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1733 | if (!lookup_method) { | |
1734 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1735 | } |
1736 | } else { | |
717d2dba JG |
1737 | WARN("Unknown tracepoint lookup method"); |
1738 | } | |
1739 | ||
1740 | free(lookup_method_name); | |
1741 | if (!lookup_method) { | |
c1e83fb4 FD |
1742 | goto error; |
1743 | } | |
1744 | } else { | |
717d2dba | 1745 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1746 | goto error; |
1747 | } | |
1748 | ||
1749 | /* Check if all the necessary fields were found. */ | |
1750 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1751 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1752 | location = |
1753 | lttng_userspace_probe_location_tracepoint_create( | |
1754 | binary_path, provider_name, | |
1755 | probe_name, lookup_method); | |
6bd61b96 | 1756 | lookup_method = NULL; |
717d2dba | 1757 | goto error; |
c1e83fb4 FD |
1758 | } |
1759 | } | |
1760 | error: | |
717d2dba | 1761 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1762 | free(binary_path); |
c1e83fb4 | 1763 | free(provider_name); |
717d2dba | 1764 | free(probe_name); |
c1e83fb4 FD |
1765 | return location; |
1766 | } | |
1767 | ||
dcf266c0 JG |
1768 | static |
1769 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1770 | struct lttng_event_probe_attr *attr) | |
1771 | { | |
1772 | int ret; | |
1773 | ||
a0377dfe FD |
1774 | LTTNG_ASSERT(probe_attribute_node); |
1775 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1776 | |
1777 | if (!strcmp((const char *) probe_attribute_node->name, | |
1778 | config_element_address)) { | |
1779 | xmlChar *content; | |
1780 | uint64_t addr = 0; | |
1781 | ||
1782 | /* addr */ | |
1783 | content = xmlNodeGetContent(probe_attribute_node); | |
1784 | if (!content) { | |
1785 | ret = -LTTNG_ERR_NOMEM; | |
1786 | goto end; | |
1787 | } | |
1788 | ||
1789 | ret = parse_uint(content, &addr); | |
1790 | free(content); | |
1791 | if (ret) { | |
1792 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1793 | goto end; | |
1794 | } | |
1795 | ||
1796 | attr->addr = addr; | |
1797 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1798 | config_element_offset)) { | |
1799 | xmlChar *content; | |
1800 | uint64_t offset = 0; | |
1801 | ||
1802 | /* offset */ | |
1803 | content = xmlNodeGetContent(probe_attribute_node); | |
1804 | if (!content) { | |
1805 | ret = -LTTNG_ERR_NOMEM; | |
1806 | goto end; | |
1807 | } | |
1808 | ||
1809 | ret = parse_uint(content, &offset); | |
1810 | free(content); | |
1811 | if (ret) { | |
1812 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1813 | goto end; | |
1814 | } | |
1815 | ||
1816 | attr->offset = offset; | |
1817 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1818 | config_element_symbol_name)) { | |
1819 | xmlChar *content; | |
dcf266c0 JG |
1820 | |
1821 | /* symbol_name */ | |
1822 | content = xmlNodeGetContent(probe_attribute_node); | |
1823 | if (!content) { | |
1824 | ret = -LTTNG_ERR_NOMEM; | |
1825 | goto end; | |
1826 | } | |
1827 | ||
d2e67842 JG |
1828 | ret = lttng_strncpy(attr->symbol_name, |
1829 | (const char *) content, | |
1830 | LTTNG_SYMBOL_NAME_LEN); | |
1831 | if (ret == -1) { | |
1832 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1833 | (const char *) content, | |
1834 | strlen((const char *) content), | |
1835 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1836 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1837 | free(content); | |
1838 | goto end; | |
1839 | } | |
dcf266c0 JG |
1840 | free(content); |
1841 | } | |
1842 | ret = 0; | |
1843 | end: | |
1844 | return ret; | |
1845 | } | |
1846 | ||
1847 | static | |
1848 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1849 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1850 | { |
d7b645e2 | 1851 | int ret = 0, i; |
dcf266c0 | 1852 | xmlNodePtr node; |
91744e14 | 1853 | struct lttng_event *event; |
dcf266c0 JG |
1854 | char **exclusions = NULL; |
1855 | unsigned long exclusion_count = 0; | |
1856 | char *filter_expression = NULL; | |
1857 | ||
a0377dfe FD |
1858 | LTTNG_ASSERT(event_node); |
1859 | LTTNG_ASSERT(handle); | |
1860 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1861 | |
91744e14 FD |
1862 | event = lttng_event_create(); |
1863 | if (!event) { | |
1864 | ret = -LTTNG_ERR_NOMEM; | |
1865 | goto end; | |
1866 | } | |
dcf266c0 | 1867 | |
f40eba3d JG |
1868 | /* Initialize default log level which varies by domain */ |
1869 | switch (handle->domain.type) | |
1870 | { | |
1871 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1872 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1873 | break; |
1874 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1875 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1876 | break; |
1877 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1878 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1879 | break; |
1880 | case LTTNG_DOMAIN_UST: | |
1881 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1882 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1883 | break; |
1884 | default: | |
a0377dfe | 1885 | abort(); |
f40eba3d JG |
1886 | } |
1887 | ||
dcf266c0 JG |
1888 | for (node = xmlFirstElementChild(event_node); node; |
1889 | node = xmlNextElementSibling(node)) { | |
1890 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1891 | xmlChar *content; | |
dcf266c0 JG |
1892 | |
1893 | /* name */ | |
1894 | content = xmlNodeGetContent(node); | |
1895 | if (!content) { | |
1896 | ret = -LTTNG_ERR_NOMEM; | |
1897 | goto end; | |
1898 | } | |
1899 | ||
91744e14 | 1900 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1901 | (const char *) content, |
1902 | LTTNG_SYMBOL_NAME_LEN); | |
1903 | if (ret == -1) { | |
1904 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1905 | (const char *) content, | |
1906 | strlen((const char *) content), | |
1907 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1908 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1909 | free(content); | |
1910 | goto end; | |
1911 | } | |
dcf266c0 JG |
1912 | free(content); |
1913 | } else if (!strcmp((const char *) node->name, | |
1914 | config_element_enabled)) { | |
1915 | xmlChar *content = xmlNodeGetContent(node); | |
1916 | ||
1917 | /* enabled */ | |
1918 | if (!content) { | |
1919 | ret = -LTTNG_ERR_NOMEM; | |
1920 | goto end; | |
1921 | } | |
1922 | ||
91744e14 | 1923 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1924 | free(content); |
1925 | if (ret) { | |
1926 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1927 | goto end; | |
1928 | } | |
1929 | } else if (!strcmp((const char *) node->name, | |
1930 | config_element_type)) { | |
1931 | xmlChar *content = xmlNodeGetContent(node); | |
1932 | ||
1933 | /* type */ | |
1934 | if (!content) { | |
1935 | ret = -LTTNG_ERR_NOMEM; | |
1936 | goto end; | |
1937 | } | |
1938 | ||
1939 | ret = get_event_type(content); | |
1940 | free(content); | |
1941 | if (ret < 0) { | |
1942 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1943 | goto end; | |
1944 | } | |
1945 | ||
91744e14 | 1946 | event->type = ret; |
dcf266c0 JG |
1947 | } else if (!strcmp((const char *) node->name, |
1948 | config_element_loglevel_type)) { | |
1949 | xmlChar *content = xmlNodeGetContent(node); | |
1950 | ||
1951 | /* loglevel_type */ | |
1952 | if (!content) { | |
1953 | ret = -LTTNG_ERR_NOMEM; | |
1954 | goto end; | |
1955 | } | |
1956 | ||
1957 | ret = get_loglevel_type(content); | |
1958 | free(content); | |
1959 | if (ret < 0) { | |
1960 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1961 | goto end; | |
1962 | } | |
1963 | ||
91744e14 | 1964 | event->loglevel_type = ret; |
dcf266c0 JG |
1965 | } else if (!strcmp((const char *) node->name, |
1966 | config_element_loglevel)) { | |
1967 | xmlChar *content; | |
1968 | int64_t loglevel = 0; | |
1969 | ||
1970 | /* loglevel */ | |
1971 | content = xmlNodeGetContent(node); | |
1972 | if (!content) { | |
1973 | ret = -LTTNG_ERR_NOMEM; | |
1974 | goto end; | |
1975 | } | |
1976 | ||
1977 | ret = parse_int(content, &loglevel); | |
1978 | free(content); | |
1979 | if (ret) { | |
1980 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1981 | goto end; | |
1982 | } | |
1983 | ||
1984 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1985 | WARN("loglevel out of range."); | |
1986 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1987 | goto end; | |
1988 | } | |
1989 | ||
91744e14 | 1990 | event->loglevel = loglevel; |
dcf266c0 JG |
1991 | } else if (!strcmp((const char *) node->name, |
1992 | config_element_filter)) { | |
1993 | xmlChar *content = | |
1994 | xmlNodeGetContent(node); | |
1995 | ||
1996 | /* filter */ | |
1997 | if (!content) { | |
1998 | ret = -LTTNG_ERR_NOMEM; | |
1999 | goto end; | |
2000 | } | |
2001 | ||
02d8ac3d | 2002 | free(filter_expression); |
dcf266c0 JG |
2003 | filter_expression = strdup((char *) content); |
2004 | free(content); | |
2005 | if (!filter_expression) { | |
2006 | ret = -LTTNG_ERR_NOMEM; | |
2007 | goto end; | |
2008 | } | |
2009 | } else if (!strcmp((const char *) node->name, | |
2010 | config_element_exclusions)) { | |
2011 | xmlNodePtr exclusion_node; | |
2012 | int exclusion_index = 0; | |
2013 | ||
2014 | /* exclusions */ | |
2015 | if (exclusions) { | |
2016 | /* | |
2017 | * Exclusions has already been initialized, | |
2018 | * invalid file. | |
2019 | */ | |
2020 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2021 | goto end; | |
2022 | } | |
2023 | ||
2024 | exclusion_count = xmlChildElementCount(node); | |
2025 | if (!exclusion_count) { | |
2026 | continue; | |
2027 | } | |
2028 | ||
2029 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
2030 | if (!exclusions) { | |
2031 | exclusion_count = 0; | |
2032 | ret = -LTTNG_ERR_NOMEM; | |
2033 | goto end; | |
2034 | } | |
2035 | ||
2036 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2037 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2038 | xmlChar *content = | |
2039 | xmlNodeGetContent(exclusion_node); | |
2040 | ||
2041 | if (!content) { | |
2042 | ret = -LTTNG_ERR_NOMEM; | |
2043 | goto end; | |
2044 | } | |
2045 | ||
2046 | exclusions[exclusion_index] = strdup((const char *) content); | |
2047 | free(content); | |
2048 | if (!exclusions[exclusion_index]) { | |
2049 | ret = -LTTNG_ERR_NOMEM; | |
2050 | goto end; | |
2051 | } | |
2052 | exclusion_index++; | |
2053 | } | |
2054 | ||
91744e14 | 2055 | event->exclusion = 1; |
dcf266c0 JG |
2056 | } else if (!strcmp((const char *) node->name, |
2057 | config_element_attributes)) { | |
2058 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2059 | ||
2060 | /* attributes */ | |
2061 | if (!attribute_node) { | |
2062 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2063 | goto end; | |
2064 | } | |
2065 | ||
c1e83fb4 | 2066 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2067 | config_element_probe_attributes)) { |
2068 | xmlNodePtr probe_attribute_node; | |
2069 | ||
2070 | /* probe_attributes */ | |
2071 | for (probe_attribute_node = | |
2072 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2073 | probe_attribute_node = xmlNextElementSibling( | |
2074 | probe_attribute_node)) { | |
2075 | ||
2076 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2077 | &event->attr.probe); |
dcf266c0 JG |
2078 | if (ret) { |
2079 | goto end; | |
2080 | } | |
2081 | } | |
c1e83fb4 FD |
2082 | } else if (!strcmp((const char *) attribute_node->name, |
2083 | config_element_function_attributes)) { | |
dcf266c0 JG |
2084 | size_t sym_len; |
2085 | xmlChar *content; | |
2086 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2087 | ||
2088 | /* function_attributes */ | |
2089 | content = xmlNodeGetContent(symbol_node); | |
2090 | if (!content) { | |
2091 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2092 | goto end; | |
2093 | } | |
2094 | ||
2095 | sym_len = strlen((char *) content); | |
2096 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2097 | WARN("Function name too long."); | |
2098 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2099 | free(content); | |
2100 | goto end; | |
2101 | } | |
2102 | ||
d2e67842 | 2103 | ret = lttng_strncpy( |
91744e14 | 2104 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2105 | (char *) content, sym_len); |
2106 | if (ret == -1) { | |
2107 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2108 | free(content); | |
2109 | goto end; | |
2110 | } | |
dcf266c0 | 2111 | free(content); |
c1e83fb4 FD |
2112 | } else if (!strcmp((const char *) attribute_node->name, |
2113 | config_element_userspace_probe_tracepoint_attributes)) { | |
2114 | struct lttng_userspace_probe_location *location; | |
2115 | ||
2116 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2117 | if (!location) { | |
2118 | WARN("Error processing userspace probe tracepoint attribute"); | |
2119 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2120 | goto end; | |
2121 | } | |
2122 | ret = lttng_event_set_userspace_probe_location( | |
2123 | event, location); | |
2124 | if (ret) { | |
2125 | WARN("Error setting userspace probe location field"); | |
2126 | lttng_userspace_probe_location_destroy( | |
2127 | location); | |
2128 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2129 | goto end; | |
2130 | } | |
2131 | } else if (!strcmp((const char *) attribute_node->name, | |
2132 | config_element_userspace_probe_function_attributes)) { | |
2133 | struct lttng_userspace_probe_location *location; | |
2134 | ||
2135 | location = | |
2136 | process_userspace_probe_function_attribute_node( | |
2137 | attribute_node); | |
2138 | if (!location) { | |
2139 | WARN("Error processing userspace probe function attribute"); | |
2140 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2141 | goto end; | |
2142 | } | |
2143 | ||
2144 | ret = lttng_event_set_userspace_probe_location( | |
2145 | event, location); | |
2146 | if (ret) { | |
2147 | WARN("Error setting userspace probe location field"); | |
2148 | lttng_userspace_probe_location_destroy( | |
2149 | location); | |
2150 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2151 | goto end; | |
2152 | } | |
2153 | } else { | |
2154 | /* Unknown event attribute. */ | |
2155 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2156 | goto end; | |
dcf266c0 JG |
2157 | } |
2158 | } | |
2159 | } | |
2160 | ||
91744e14 FD |
2161 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2162 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2163 | filter_expression, exclusion_count, exclusions); |
2164 | if (ret < 0) { | |
91744e14 | 2165 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2166 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2167 | goto end; | |
2168 | } | |
065321e9 | 2169 | } |
d2e67842 | 2170 | ret = 0; |
dcf266c0 JG |
2171 | end: |
2172 | for (i = 0; i < exclusion_count; i++) { | |
2173 | free(exclusions[i]); | |
2174 | } | |
2175 | ||
b33f872b | 2176 | lttng_event_destroy(event); |
dcf266c0 JG |
2177 | free(exclusions); |
2178 | free(filter_expression); | |
2179 | return ret; | |
2180 | } | |
2181 | ||
2182 | static | |
2183 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2184 | const char *channel_name) | |
2185 | { | |
2186 | int ret = 0; | |
d7b645e2 | 2187 | struct lttng_event event; |
dcf266c0 JG |
2188 | xmlNodePtr node; |
2189 | ||
a0377dfe FD |
2190 | LTTNG_ASSERT(events_node); |
2191 | LTTNG_ASSERT(handle); | |
2192 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2193 | |
2194 | for (node = xmlFirstElementChild(events_node); node; | |
2195 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2196 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2197 | if (ret) { |
2198 | goto end; | |
2199 | } | |
2200 | } | |
d7b645e2 JR |
2201 | |
2202 | /* | |
2203 | * Disable all events to enable only the necessary events. | |
2204 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2205 | * force this approach. | |
2206 | */ | |
2207 | memset(&event, 0, sizeof(event)); | |
2208 | event.loglevel = -1; | |
2209 | event.type = LTTNG_EVENT_ALL; | |
2210 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2211 | if (ret) { | |
2212 | goto end; | |
2213 | } | |
2214 | ||
2215 | for (node = xmlFirstElementChild(events_node); node; | |
2216 | node = xmlNextElementSibling(node)) { | |
2217 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2218 | if (ret) { | |
2219 | goto end; | |
2220 | } | |
2221 | } | |
2222 | ||
dcf266c0 JG |
2223 | end: |
2224 | return ret; | |
2225 | } | |
2226 | ||
2227 | static | |
2228 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2229 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2230 | xmlNodePtr *events_node) | |
2231 | { | |
2232 | int ret; | |
2233 | ||
a0377dfe FD |
2234 | LTTNG_ASSERT(attr_node); |
2235 | LTTNG_ASSERT(channel); | |
2236 | LTTNG_ASSERT(contexts_node); | |
2237 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2238 | |
2239 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2240 | xmlChar *content; | |
dcf266c0 JG |
2241 | |
2242 | /* name */ | |
2243 | content = xmlNodeGetContent(attr_node); | |
2244 | if (!content) { | |
2245 | ret = -LTTNG_ERR_NOMEM; | |
2246 | goto end; | |
2247 | } | |
2248 | ||
d2e67842 JG |
2249 | ret = lttng_strncpy(channel->name, |
2250 | (const char *) content, | |
2251 | LTTNG_SYMBOL_NAME_LEN); | |
2252 | if (ret == -1) { | |
2253 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2254 | (const char *) content, | |
2255 | strlen((const char *) content), | |
2256 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2257 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2258 | free(content); | |
2259 | goto end; | |
2260 | } | |
dcf266c0 JG |
2261 | free(content); |
2262 | } else if (!strcmp((const char *) attr_node->name, | |
2263 | config_element_enabled)) { | |
2264 | xmlChar *content; | |
2265 | int enabled; | |
2266 | ||
2267 | /* enabled */ | |
2268 | content = xmlNodeGetContent(attr_node); | |
2269 | if (!content) { | |
2270 | ret = -LTTNG_ERR_NOMEM; | |
2271 | goto end; | |
2272 | } | |
2273 | ||
2274 | ret = parse_bool(content, &enabled); | |
2275 | free(content); | |
2276 | if (ret) { | |
2277 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2278 | goto end; | |
2279 | } | |
2280 | ||
2281 | channel->enabled = enabled; | |
2282 | } else if (!strcmp((const char *) attr_node->name, | |
2283 | config_element_overwrite_mode)) { | |
2284 | xmlChar *content; | |
2285 | ||
2286 | /* overwrite_mode */ | |
2287 | content = xmlNodeGetContent(attr_node); | |
2288 | if (!content) { | |
2289 | ret = -LTTNG_ERR_NOMEM; | |
2290 | goto end; | |
2291 | } | |
2292 | ||
2293 | ret = get_overwrite_mode(content); | |
2294 | free(content); | |
2295 | if (ret < 0) { | |
2296 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2297 | goto end; | |
2298 | } | |
2299 | ||
2300 | channel->attr.overwrite = ret; | |
2301 | } else if (!strcmp((const char *) attr_node->name, | |
2302 | config_element_subbuf_size)) { | |
2303 | xmlChar *content; | |
2304 | ||
2305 | /* subbuffer_size */ | |
2306 | content = xmlNodeGetContent(attr_node); | |
2307 | if (!content) { | |
2308 | ret = -LTTNG_ERR_NOMEM; | |
2309 | goto end; | |
2310 | } | |
2311 | ||
2312 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2313 | free(content); | |
2314 | if (ret) { | |
2315 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2316 | goto end; | |
2317 | } | |
2318 | } else if (!strcmp((const char *) attr_node->name, | |
2319 | config_element_num_subbuf)) { | |
2320 | xmlChar *content; | |
2321 | ||
2322 | /* subbuffer_count */ | |
2323 | content = xmlNodeGetContent(attr_node); | |
2324 | if (!content) { | |
2325 | ret = -LTTNG_ERR_NOMEM; | |
2326 | goto end; | |
2327 | } | |
2328 | ||
2329 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2330 | free(content); | |
2331 | if (ret) { | |
2332 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2333 | goto end; | |
2334 | } | |
2335 | } else if (!strcmp((const char *) attr_node->name, | |
2336 | config_element_switch_timer_interval)) { | |
2337 | xmlChar *content; | |
2338 | uint64_t switch_timer_interval = 0; | |
2339 | ||
2340 | /* switch_timer_interval */ | |
2341 | content = xmlNodeGetContent(attr_node); | |
2342 | if (!content) { | |
2343 | ret = -LTTNG_ERR_NOMEM; | |
2344 | goto end; | |
2345 | } | |
2346 | ||
2347 | ret = parse_uint(content, &switch_timer_interval); | |
2348 | free(content); | |
2349 | if (ret) { | |
2350 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2351 | goto end; | |
2352 | } | |
2353 | ||
2354 | if (switch_timer_interval > UINT_MAX) { | |
2355 | WARN("switch_timer_interval out of range."); | |
2356 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | channel->attr.switch_timer_interval = | |
2361 | switch_timer_interval; | |
2362 | } else if (!strcmp((const char *) attr_node->name, | |
2363 | config_element_read_timer_interval)) { | |
2364 | xmlChar *content; | |
2365 | uint64_t read_timer_interval = 0; | |
2366 | ||
2367 | /* read_timer_interval */ | |
2368 | content = xmlNodeGetContent(attr_node); | |
2369 | if (!content) { | |
2370 | ret = -LTTNG_ERR_NOMEM; | |
2371 | goto end; | |
2372 | } | |
2373 | ||
2374 | ret = parse_uint(content, &read_timer_interval); | |
2375 | free(content); | |
2376 | if (ret) { | |
2377 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2378 | goto end; | |
2379 | } | |
2380 | ||
2381 | if (read_timer_interval > UINT_MAX) { | |
2382 | WARN("read_timer_interval out of range."); | |
2383 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2384 | goto end; | |
2385 | } | |
2386 | ||
2387 | channel->attr.read_timer_interval = | |
2388 | read_timer_interval; | |
2389 | } else if (!strcmp((const char *) attr_node->name, | |
2390 | config_element_output_type)) { | |
2391 | xmlChar *content; | |
2392 | ||
2393 | /* output_type */ | |
2394 | content = xmlNodeGetContent(attr_node); | |
2395 | if (!content) { | |
2396 | ret = -LTTNG_ERR_NOMEM; | |
2397 | goto end; | |
2398 | } | |
2399 | ||
2400 | ret = get_output_type(content); | |
2401 | free(content); | |
2402 | if (ret < 0) { | |
2403 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2404 | goto end; | |
2405 | } | |
2406 | ||
2407 | channel->attr.output = ret; | |
2408 | } else if (!strcmp((const char *) attr_node->name, | |
2409 | config_element_tracefile_size)) { | |
2410 | xmlChar *content; | |
2411 | ||
2412 | /* tracefile_size */ | |
2413 | content = xmlNodeGetContent(attr_node); | |
2414 | if (!content) { | |
2415 | ret = -LTTNG_ERR_NOMEM; | |
2416 | goto end; | |
2417 | } | |
2418 | ||
2419 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2420 | free(content); | |
2421 | if (ret) { | |
2422 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2423 | goto end; | |
2424 | } | |
2425 | } else if (!strcmp((const char *) attr_node->name, | |
2426 | config_element_tracefile_count)) { | |
2427 | xmlChar *content; | |
2428 | ||
2429 | /* tracefile_count */ | |
2430 | content = xmlNodeGetContent(attr_node); | |
2431 | if (!content) { | |
2432 | ret = -LTTNG_ERR_NOMEM; | |
2433 | goto end; | |
2434 | } | |
2435 | ||
2436 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2437 | free(content); | |
2438 | if (ret) { | |
2439 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2440 | goto end; | |
2441 | } | |
2442 | } else if (!strcmp((const char *) attr_node->name, | |
2443 | config_element_live_timer_interval)) { | |
2444 | xmlChar *content; | |
2445 | uint64_t live_timer_interval = 0; | |
2446 | ||
2447 | /* live_timer_interval */ | |
2448 | content = xmlNodeGetContent(attr_node); | |
2449 | if (!content) { | |
2450 | ret = -LTTNG_ERR_NOMEM; | |
2451 | goto end; | |
2452 | } | |
2453 | ||
2454 | ret = parse_uint(content, &live_timer_interval); | |
2455 | free(content); | |
2456 | if (ret) { | |
2457 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2458 | goto end; | |
2459 | } | |
2460 | ||
2461 | if (live_timer_interval > UINT_MAX) { | |
2462 | WARN("live_timer_interval out of range."); | |
2463 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2464 | goto end; | |
2465 | } | |
2466 | ||
2467 | channel->attr.live_timer_interval = | |
2468 | live_timer_interval; | |
4fc2b126 JR |
2469 | } else if (!strcmp((const char *) attr_node->name, |
2470 | config_element_monitor_timer_interval)) { | |
2471 | xmlChar *content; | |
2472 | uint64_t monitor_timer_interval = 0; | |
2473 | ||
2474 | /* monitor_timer_interval */ | |
2475 | content = xmlNodeGetContent(attr_node); | |
2476 | if (!content) { | |
2477 | ret = -LTTNG_ERR_NOMEM; | |
2478 | goto end; | |
2479 | } | |
2480 | ||
2481 | ret = parse_uint(content, &monitor_timer_interval); | |
2482 | free(content); | |
2483 | if (ret) { | |
2484 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2485 | goto end; | |
2486 | } | |
2487 | ||
2488 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2489 | monitor_timer_interval); | |
2490 | if (ret) { | |
2491 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2492 | goto end; | |
2493 | } | |
275472aa JR |
2494 | } else if (!strcmp((const char *) attr_node->name, |
2495 | config_element_blocking_timeout)) { | |
2496 | xmlChar *content; | |
2497 | int64_t blocking_timeout = 0; | |
2498 | ||
2499 | /* blocking_timeout */ | |
2500 | content = xmlNodeGetContent(attr_node); | |
2501 | if (!content) { | |
2502 | ret = -LTTNG_ERR_NOMEM; | |
2503 | goto end; | |
2504 | } | |
2505 | ||
2506 | ret = parse_int(content, &blocking_timeout); | |
2507 | free(content); | |
2508 | if (ret) { | |
2509 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2510 | goto end; | |
2511 | } | |
2512 | ||
2513 | ret = lttng_channel_set_blocking_timeout(channel, | |
2514 | blocking_timeout); | |
2515 | if (ret) { | |
2516 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2517 | goto end; | |
2518 | } | |
dcf266c0 JG |
2519 | } else if (!strcmp((const char *) attr_node->name, |
2520 | config_element_events)) { | |
2521 | /* events */ | |
2522 | *events_node = attr_node; | |
2523 | } else { | |
2524 | /* contexts */ | |
2525 | *contexts_node = attr_node; | |
2526 | } | |
2527 | ret = 0; | |
2528 | end: | |
2529 | return ret; | |
2530 | } | |
2531 | ||
2532 | static | |
2533 | int process_context_node(xmlNodePtr context_node, | |
2534 | struct lttng_handle *handle, const char *channel_name) | |
2535 | { | |
2536 | int ret; | |
2537 | struct lttng_event_context context; | |
2538 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2539 | ||
a0377dfe FD |
2540 | LTTNG_ASSERT(handle); |
2541 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2542 | |
2543 | if (!context_child_node) { | |
2544 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2545 | goto end; | |
2546 | } | |
2547 | ||
2548 | memset(&context, 0, sizeof(context)); | |
2549 | ||
2550 | if (!strcmp((const char *) context_child_node->name, | |
2551 | config_element_type)) { | |
2552 | /* type */ | |
2553 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2554 | |
dcf266c0 JG |
2555 | if (!content) { |
2556 | ret = -LTTNG_ERR_NOMEM; | |
2557 | goto end; | |
2558 | } | |
2559 | ||
2560 | ret = get_context_type(content); | |
2561 | free(content); | |
2562 | if (ret < 0) { | |
2563 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2564 | goto end; | |
2565 | } | |
2566 | ||
2567 | context.ctx = ret; | |
045fc617 JG |
2568 | } else if (!strcmp((const char *) context_child_node->name, |
2569 | config_element_context_perf)) { | |
2570 | /* perf */ | |
dcf266c0 JG |
2571 | xmlNodePtr perf_attr_node; |
2572 | ||
14ce5bd8 JG |
2573 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2574 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2575 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2576 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2577 | perf_attr_node; perf_attr_node = | |
2578 | xmlNextElementSibling(perf_attr_node)) { | |
2579 | if (!strcmp((const char *) perf_attr_node->name, | |
2580 | config_element_type)) { | |
2581 | xmlChar *content; | |
2582 | uint64_t type = 0; | |
2583 | ||
2584 | /* type */ | |
2585 | content = xmlNodeGetContent(perf_attr_node); | |
2586 | if (!content) { | |
2587 | ret = -LTTNG_ERR_NOMEM; | |
2588 | goto end; | |
2589 | } | |
2590 | ||
2591 | ret = parse_uint(content, &type); | |
2592 | free(content); | |
2593 | if (ret) { | |
2594 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2595 | goto end; | |
2596 | } | |
2597 | ||
2598 | if (type > UINT32_MAX) { | |
2599 | WARN("perf context type out of range."); | |
2600 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2601 | goto end; | |
2602 | } | |
2603 | ||
2604 | context.u.perf_counter.type = type; | |
2605 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2606 | config_element_config)) { | |
2607 | xmlChar *content; | |
2608 | uint64_t config = 0; | |
2609 | ||
2610 | /* config */ | |
2611 | content = xmlNodeGetContent(perf_attr_node); | |
2612 | if (!content) { | |
2613 | ret = -LTTNG_ERR_NOMEM; | |
2614 | goto end; | |
2615 | } | |
2616 | ||
2617 | ret = parse_uint(content, &config); | |
2618 | free(content); | |
2619 | if (ret) { | |
2620 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2621 | goto end; | |
2622 | } | |
2623 | ||
2624 | context.u.perf_counter.config = config; | |
2625 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2626 | config_element_name)) { | |
2627 | xmlChar *content; | |
dcf266c0 JG |
2628 | |
2629 | /* name */ | |
2630 | content = xmlNodeGetContent(perf_attr_node); | |
2631 | if (!content) { | |
2632 | ret = -LTTNG_ERR_NOMEM; | |
2633 | goto end; | |
2634 | } | |
2635 | ||
d2e67842 JG |
2636 | ret = lttng_strncpy(context.u.perf_counter.name, |
2637 | (const char *) content, | |
2638 | LTTNG_SYMBOL_NAME_LEN); | |
2639 | if (ret == -1) { | |
2640 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2641 | (const char *) content, | |
2642 | strlen((const char *) content), | |
2643 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2644 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2645 | free(content); | |
2646 | goto end; | |
2647 | } | |
dcf266c0 JG |
2648 | free(content); |
2649 | } | |
2650 | } | |
045fc617 JG |
2651 | } else if (!strcmp((const char *) context_child_node->name, |
2652 | config_element_context_app)) { | |
2653 | /* application context */ | |
2654 | xmlNodePtr app_ctx_node; | |
2655 | ||
2656 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2657 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2658 | app_ctx_node; app_ctx_node = | |
2659 | xmlNextElementSibling(app_ctx_node)) { | |
2660 | xmlChar *content; | |
2661 | char **target = strcmp( | |
2662 | (const char *) app_ctx_node->name, | |
2663 | config_element_context_app_provider_name) == 0 ? | |
2664 | &context.u.app_ctx.provider_name : | |
2665 | &context.u.app_ctx.ctx_name; | |
2666 | ||
2667 | content = xmlNodeGetContent(app_ctx_node); | |
2668 | if (!content) { | |
2669 | ret = -LTTNG_ERR_NOMEM; | |
2670 | goto end; | |
2671 | } | |
2672 | ||
2673 | *target = (char *) content; | |
2674 | } | |
2675 | } else { | |
2676 | /* Unrecognized context type */ | |
2677 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2678 | goto end; | |
dcf266c0 JG |
2679 | } |
2680 | ||
2681 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2682 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2683 | free(context.u.app_ctx.provider_name); | |
2684 | free(context.u.app_ctx.ctx_name); | |
2685 | } | |
dcf266c0 JG |
2686 | end: |
2687 | return ret; | |
2688 | } | |
2689 | ||
2690 | static | |
2691 | int process_contexts_node(xmlNodePtr contexts_node, | |
2692 | struct lttng_handle *handle, const char *channel_name) | |
2693 | { | |
2694 | int ret = 0; | |
2695 | xmlNodePtr context_node; | |
2696 | ||
2697 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2698 | context_node = xmlNextElementSibling(context_node)) { | |
2699 | ret = process_context_node(context_node, handle, channel_name); | |
2700 | if (ret) { | |
2701 | goto end; | |
2702 | } | |
2703 | } | |
2704 | end: | |
2705 | return ret; | |
2706 | } | |
2707 | ||
159b042f | 2708 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2709 | const char **element_id_tracker, |
159b042f JG |
2710 | const char **element_value_type, |
2711 | const char **element_value, | |
2712 | const char **element_value_alias, | |
55c9e7ca JR |
2713 | const char **element_name) |
2714 | { | |
2715 | int ret = 0; | |
2716 | ||
159b042f JG |
2717 | switch (process_attr) { |
2718 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2719 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2720 | *element_value_type = config_element_process_attr_pid_value; | |
2721 | *element_value = config_element_process_attr_id; | |
2722 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2723 | *element_name = NULL; |
2724 | break; | |
159b042f JG |
2725 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2726 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2727 | *element_value_type = config_element_process_attr_vpid_value; | |
2728 | *element_value = config_element_process_attr_id; | |
2729 | *element_value_alias = NULL; | |
55c9e7ca JR |
2730 | *element_name = NULL; |
2731 | break; | |
159b042f JG |
2732 | case LTTNG_PROCESS_ATTR_USER_ID: |
2733 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2734 | *element_value_type = config_element_process_attr_uid_value; | |
2735 | *element_value = config_element_process_attr_id; | |
2736 | *element_value_alias = NULL; | |
55c9e7ca JR |
2737 | *element_name = config_element_name; |
2738 | break; | |
159b042f JG |
2739 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2740 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2741 | *element_value_type = config_element_process_attr_vuid_value; | |
2742 | *element_value = config_element_process_attr_id; | |
2743 | *element_value_alias = NULL; | |
55c9e7ca JR |
2744 | *element_name = config_element_name; |
2745 | break; | |
159b042f JG |
2746 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2747 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2748 | *element_value_type = config_element_process_attr_gid_value; | |
2749 | *element_value = config_element_process_attr_id; | |
2750 | *element_value_alias = NULL; | |
55c9e7ca JR |
2751 | *element_name = config_element_name; |
2752 | break; | |
159b042f JG |
2753 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2754 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2755 | *element_value_type = config_element_process_attr_vgid_value; | |
2756 | *element_value = config_element_process_attr_id; | |
2757 | *element_value_alias = NULL; | |
55c9e7ca JR |
2758 | *element_name = config_element_name; |
2759 | break; | |
2760 | default: | |
2761 | ret = LTTNG_ERR_INVALID; | |
2762 | } | |
2763 | return ret; | |
2764 | } | |
2765 | ||
f7af9a72 JG |
2766 | static int process_legacy_pid_tracker_node( |
2767 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2768 | { | |
2769 | int ret = 0, child_count; | |
2770 | xmlNodePtr targets_node = NULL; | |
2771 | xmlNodePtr node; | |
2772 | const char *element_id_tracker; | |
2773 | const char *element_target_id; | |
2774 | const char *element_id; | |
2775 | const char *element_id_alias; | |
2776 | const char *element_name; | |
2777 | enum lttng_error_code tracker_handle_ret_code; | |
2778 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2779 | enum lttng_process_attr_tracker_handle_status status; | |
2780 | const enum lttng_process_attr process_attr = | |
2781 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2782 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2783 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2784 | ||
a0377dfe | 2785 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2786 | |
2787 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2788 | handle->session_name, handle->domain.type, | |
2789 | process_attr, | |
2790 | &tracker_handle); | |
2791 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2792 | ret = LTTNG_ERR_INVALID; | |
2793 | goto end; | |
2794 | } | |
2795 | ||
2796 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2797 | &element_target_id, &element_id, &element_id_alias, | |
2798 | &element_name); | |
2799 | if (ret) { | |
2800 | goto end; | |
2801 | } | |
2802 | ||
2803 | /* Get the targets node */ | |
2804 | for (node = xmlFirstElementChild(trackers_node); node; | |
2805 | node = xmlNextElementSibling(node)) { | |
2806 | if (!strcmp((const char *) node->name, | |
2807 | config_element_tracker_targets_legacy)) { | |
2808 | targets_node = node; | |
2809 | break; | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | if (!targets_node) { | |
2814 | ret = LTTNG_ERR_INVALID; | |
2815 | goto end; | |
2816 | } | |
2817 | ||
2818 | /* Go through all id target node */ | |
2819 | child_count = xmlChildElementCount(targets_node); | |
2820 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2821 | tracker_handle, | |
2822 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2823 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2824 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2825 | ret = LTTNG_ERR_UNK; | |
2826 | goto end; | |
2827 | } | |
2828 | ||
2829 | /* Add all tracked values. */ | |
2830 | for (node = xmlFirstElementChild(targets_node); node; | |
2831 | node = xmlNextElementSibling(node)) { | |
2832 | xmlNodePtr pid_target_node = node; | |
2833 | ||
2834 | /* get pid_target node and track it */ | |
2835 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2836 | node = xmlNextElementSibling(node)) { | |
2837 | if (!strcmp((const char *) node->name, | |
2838 | config_element_tracker_pid_legacy)) { | |
2839 | int64_t id; | |
2840 | xmlChar *content = xmlNodeGetContent(node); | |
2841 | ||
2842 | if (!content) { | |
2843 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2844 | goto end; | |
2845 | } | |
2846 | ||
2847 | ret = parse_int(content, &id); | |
2848 | free(content); | |
2849 | if (ret) { | |
2850 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2851 | goto end; | |
2852 | } | |
2853 | ||
2854 | switch (process_attr) { | |
2855 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2856 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2857 | tracker_handle, | |
2858 | (pid_t) id); | |
2859 | break; | |
2860 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2861 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2862 | tracker_handle, | |
2863 | (pid_t) id); | |
2864 | break; | |
2865 | default: | |
2866 | ret = LTTNG_ERR_INVALID; | |
2867 | goto end; | |
2868 | } | |
2869 | } | |
2870 | switch (status) { | |
2871 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2872 | continue; | |
2873 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2874 | ret = LTTNG_ERR_INVALID; | |
2875 | break; | |
2876 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2877 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2878 | break; | |
2879 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2880 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2881 | break; | |
2882 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2883 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2884 | default: | |
2885 | ret = LTTNG_ERR_UNK; | |
2886 | goto end; | |
2887 | } | |
2888 | } | |
2889 | node = pid_target_node; | |
2890 | } | |
2891 | ||
2892 | end: | |
2893 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2894 | return ret; | |
2895 | } | |
2896 | ||
55c9e7ca JR |
2897 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2898 | struct lttng_handle *handle, | |
159b042f | 2899 | enum lttng_process_attr process_attr) |
847a5916 | 2900 | { |
159b042f | 2901 | int ret = 0, child_count; |
f7af9a72 | 2902 | xmlNodePtr values_node = NULL; |
847a5916 | 2903 | xmlNodePtr node; |
55c9e7ca JR |
2904 | const char *element_id_tracker; |
2905 | const char *element_target_id; | |
2906 | const char *element_id; | |
2907 | const char *element_id_alias; | |
2908 | const char *element_name; | |
159b042f JG |
2909 | enum lttng_error_code tracker_handle_ret_code; |
2910 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2911 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2912 | |
a0377dfe FD |
2913 | LTTNG_ASSERT(handle); |
2914 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2915 | |
159b042f JG |
2916 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2917 | handle->session_name, handle->domain.type, process_attr, | |
2918 | &tracker_handle); | |
2919 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2920 | ret = LTTNG_ERR_INVALID; | |
2921 | goto end; | |
2922 | } | |
2923 | ||
2924 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2925 | &element_target_id, &element_id, &element_id_alias, |
2926 | &element_name); | |
2927 | if (ret) { | |
159b042f | 2928 | goto end; |
55c9e7ca JR |
2929 | } |
2930 | ||
f7af9a72 | 2931 | /* get the values node */ |
55c9e7ca JR |
2932 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2933 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2934 | if (!strcmp((const char *) node->name, |
159b042f | 2935 | config_element_process_attr_values)) { |
f7af9a72 | 2936 | values_node = node; |
847a5916 JR |
2937 | break; |
2938 | } | |
2939 | } | |
2940 | ||
f7af9a72 | 2941 | if (!values_node) { |
847a5916 JR |
2942 | ret = LTTNG_ERR_INVALID; |
2943 | goto end; | |
2944 | } | |
2945 | ||
55c9e7ca | 2946 | /* Go through all id target node */ |
f7af9a72 | 2947 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2948 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2949 | tracker_handle, | |
2950 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2951 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2952 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2953 | ret = LTTNG_ERR_UNK; | |
2954 | goto end; | |
847a5916 | 2955 | } |
159b042f JG |
2956 | |
2957 | /* Add all tracked values. */ | |
f7af9a72 | 2958 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2959 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2960 | xmlNodePtr id_target_node = node; |
847a5916 | 2961 | |
55c9e7ca JR |
2962 | /* get id node and track it */ |
2963 | for (node = xmlFirstElementChild(id_target_node); node; | |
2964 | node = xmlNextElementSibling(node)) { | |
2965 | if (!strcmp((const char *) node->name, element_id) || | |
2966 | (element_id_alias && | |
2967 | !strcmp((const char *) node->name, | |
2968 | element_id_alias))) { | |
2969 | int64_t id; | |
159b042f | 2970 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2971 | |
847a5916 JR |
2972 | if (!content) { |
2973 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2974 | goto end; | |
2975 | } | |
2976 | ||
55c9e7ca | 2977 | ret = parse_int(content, &id); |
847a5916 JR |
2978 | free(content); |
2979 | if (ret) { | |
2980 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2981 | goto end; | |
2982 | } | |
2983 | ||
159b042f JG |
2984 | switch (process_attr) { |
2985 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2986 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2987 | tracker_handle, | |
2988 | (pid_t) id); | |
2989 | break; | |
2990 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2991 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2992 | tracker_handle, | |
2993 | (pid_t) id); | |
2994 | break; | |
2995 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2996 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2997 | tracker_handle, | |
2998 | (uid_t) id); | |
2999 | break; | |
3000 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3001 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
3002 | tracker_handle, | |
3003 | (uid_t) id); | |
3004 | break; | |
3005 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3006 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
3007 | tracker_handle, | |
3008 | (gid_t) id); | |
3009 | break; | |
3010 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3011 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
3012 | tracker_handle, | |
3013 | (gid_t) id); | |
3014 | break; | |
3015 | default: | |
3016 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
3017 | goto end; |
3018 | } | |
159b042f JG |
3019 | } else if (element_name && |
3020 | !strcmp((const char *) node->name, | |
3021 | element_name)) { | |
3022 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 3023 | |
55c9e7ca JR |
3024 | if (!content) { |
3025 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3026 | goto end; | |
3027 | } | |
2d97a006 | 3028 | |
159b042f JG |
3029 | switch (process_attr) { |
3030 | case LTTNG_PROCESS_ATTR_USER_ID: | |
3031 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
3032 | tracker_handle, | |
3033 | (const char *) content); | |
3034 | break; | |
3035 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3036 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
3037 | tracker_handle, | |
3038 | (const char *) content); | |
3039 | break; | |
3040 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3041 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
3042 | tracker_handle, | |
3043 | (const char *) content); | |
3044 | break; | |
3045 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3046 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
3047 | tracker_handle, | |
3048 | (const char *) content); | |
3049 | break; | |
3050 | default: | |
3051 | free(content); | |
3052 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
3053 | goto end; |
3054 | } | |
55c9e7ca | 3055 | free(content); |
159b042f JG |
3056 | } |
3057 | switch (status) { | |
3058 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
3059 | continue; | |
3060 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
3061 | ret = LTTNG_ERR_INVALID; | |
3062 | break; | |
3063 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
3064 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
3065 | break; | |
3066 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
3067 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
3068 | break; | |
3069 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
3070 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
3071 | default: | |
3072 | ret = LTTNG_ERR_UNK; | |
3073 | goto end; | |
847a5916 JR |
3074 | } |
3075 | } | |
55c9e7ca | 3076 | node = id_target_node; |
847a5916 JR |
3077 | } |
3078 | ||
3079 | end: | |
159b042f | 3080 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
3081 | return ret; |
3082 | } | |
3083 | ||
dcf266c0 JG |
3084 | static |
3085 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
3086 | { | |
3087 | int ret; | |
3088 | struct lttng_domain domain = { 0 }; | |
3089 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 3090 | struct lttng_channel *channel = NULL; |
dcf266c0 | 3091 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
3092 | xmlNodePtr trackers_node = NULL; |
3093 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
3094 | xmlNodePtr vpid_tracker_node = NULL; |
3095 | xmlNodePtr uid_tracker_node = NULL; | |
3096 | xmlNodePtr vuid_tracker_node = NULL; | |
3097 | xmlNodePtr gid_tracker_node = NULL; | |
3098 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
3099 | xmlNodePtr node; |
3100 | ||
a0377dfe | 3101 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
3102 | |
3103 | ret = init_domain(domain_node, &domain); | |
3104 | if (ret) { | |
3105 | goto end; | |
3106 | } | |
3107 | ||
3108 | handle = lttng_create_handle(session_name, &domain); | |
3109 | if (!handle) { | |
3110 | ret = -LTTNG_ERR_NOMEM; | |
3111 | goto end; | |
3112 | } | |
3113 | ||
3114 | /* get the channels node */ | |
3115 | for (node = xmlFirstElementChild(domain_node); node; | |
3116 | node = xmlNextElementSibling(node)) { | |
3117 | if (!strcmp((const char *) node->name, | |
3118 | config_element_channels)) { | |
3119 | channels_node = node; | |
3120 | break; | |
3121 | } | |
3122 | } | |
3123 | ||
3124 | if (!channels_node) { | |
3125 | goto end; | |
3126 | } | |
3127 | ||
3128 | /* create all channels */ | |
3129 | for (node = xmlFirstElementChild(channels_node); node; | |
3130 | node = xmlNextElementSibling(node)) { | |
36d1687c | 3131 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
3132 | xmlNodePtr contexts_node = NULL; |
3133 | xmlNodePtr events_node = NULL; | |
3134 | xmlNodePtr channel_attr_node; | |
3135 | ||
36d1687c JG |
3136 | /* |
3137 | * Channels of the "agent" types cannot be created directly. | |
3138 | * They are meant to be created implicitly through the | |
3139 | * activation of events in their domain. However, a user | |
3140 | * can override the default channel configuration attributes | |
3141 | * by creating the underlying UST channel _before_ enabling | |
3142 | * an agent domain event. | |
3143 | * | |
3144 | * Hence, the channel's type is substituted before the creation | |
3145 | * and restored by the time the events are created. | |
3146 | */ | |
3147 | switch (domain.type) { | |
3148 | case LTTNG_DOMAIN_JUL: | |
3149 | case LTTNG_DOMAIN_LOG4J: | |
3150 | case LTTNG_DOMAIN_PYTHON: | |
3151 | domain.type = LTTNG_DOMAIN_UST; | |
3152 | default: | |
3153 | break; | |
3154 | } | |
3155 | ||
4fc2b126 JR |
3156 | channel = lttng_channel_create(&domain); |
3157 | if (!channel) { | |
3158 | ret = -1; | |
3159 | goto end; | |
3160 | } | |
dcf266c0 JG |
3161 | |
3162 | for (channel_attr_node = xmlFirstElementChild(node); | |
3163 | channel_attr_node; channel_attr_node = | |
3164 | xmlNextElementSibling(channel_attr_node)) { | |
3165 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 3166 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
3167 | if (ret) { |
3168 | goto end; | |
3169 | } | |
3170 | } | |
3171 | ||
4fc2b126 | 3172 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3173 | if (ret < 0) { |
3174 | goto end; | |
3175 | } | |
3176 | ||
36d1687c JG |
3177 | /* Restore the original channel domain. */ |
3178 | domain.type = original_domain; | |
3179 | ||
4fc2b126 | 3180 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3181 | if (ret) { |
3182 | goto end; | |
3183 | } | |
3184 | ||
3185 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3186 | channel->name); |
dcf266c0 JG |
3187 | if (ret) { |
3188 | goto end; | |
3189 | } | |
4fc2b126 JR |
3190 | |
3191 | lttng_channel_destroy(channel); | |
dcf266c0 | 3192 | } |
4fc2b126 | 3193 | channel = NULL; |
847a5916 JR |
3194 | |
3195 | /* get the trackers node */ | |
3196 | for (node = xmlFirstElementChild(domain_node); node; | |
3197 | node = xmlNextElementSibling(node)) { | |
3198 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3199 | config_element_process_attr_trackers) || |
3200 | !strcmp((const char *) node->name, | |
3201 | config_element_trackers_legacy)) { | |
3202 | if (trackers_node) { | |
3203 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3204 | config_element_process_attr_trackers, | |
3205 | config_element_trackers_legacy); | |
3206 | ret = -1; | |
3207 | goto end; | |
3208 | } | |
847a5916 JR |
3209 | trackers_node = node; |
3210 | break; | |
3211 | } | |
3212 | } | |
3213 | ||
3214 | if (!trackers_node) { | |
3215 | goto end; | |
3216 | } | |
3217 | ||
3218 | for (node = xmlFirstElementChild(trackers_node); node; | |
3219 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3220 | if (!strcmp((const char *) node->name, |
159b042f | 3221 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3222 | pid_tracker_node = node; |
55c9e7ca | 3223 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3224 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3225 | if (ret) { |
3226 | goto end; | |
3227 | } | |
3228 | } | |
3229 | if (!strcmp((const char *) node->name, | |
159b042f | 3230 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3231 | vpid_tracker_node = node; |
3232 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3233 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3234 | if (ret) { |
3235 | goto end; | |
3236 | } | |
3237 | } | |
3238 | if (!strcmp((const char *) node->name, | |
159b042f | 3239 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3240 | uid_tracker_node = node; |
3241 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3242 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3243 | if (ret) { |
3244 | goto end; | |
3245 | } | |
3246 | } | |
3247 | if (!strcmp((const char *) node->name, | |
159b042f | 3248 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3249 | vuid_tracker_node = node; |
3250 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3251 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3252 | if (ret) { |
3253 | goto end; | |
3254 | } | |
3255 | } | |
3256 | if (!strcmp((const char *) node->name, | |
159b042f | 3257 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3258 | gid_tracker_node = node; |
3259 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3260 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3261 | if (ret) { |
3262 | goto end; | |
3263 | } | |
3264 | } | |
3265 | if (!strcmp((const char *) node->name, | |
159b042f | 3266 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3267 | vgid_tracker_node = node; |
3268 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3269 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3270 | if (ret) { |
3271 | goto end; | |
3272 | } | |
3273 | } | |
f7af9a72 JG |
3274 | if (!strcmp((const char *) node->name, |
3275 | config_element_pid_tracker_legacy)) { | |
3276 | ret = process_legacy_pid_tracker_node(node, handle); | |
3277 | if (ret) { | |
3278 | goto end; | |
3279 | } | |
3280 | } | |
847a5916 JR |
3281 | } |
3282 | ||
dcf266c0 | 3283 | end: |
4fc2b126 | 3284 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3285 | lttng_destroy_handle(handle); |
3286 | return ret; | |
3287 | } | |
3288 | ||
66ea93b1 JG |
3289 | static |
3290 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3291 | { | |
3292 | int ret; | |
3293 | enum lttng_rotation_status status; | |
3294 | struct lttng_rotation_schedule *periodic = | |
3295 | lttng_rotation_schedule_periodic_create(); | |
3296 | ||
3297 | if (!periodic) { | |
3298 | ret = -LTTNG_ERR_NOMEM; | |
3299 | goto error; | |
3300 | } | |
3301 | ||
3302 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3303 | time_us); | |
3304 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3305 | ret = -LTTNG_ERR_INVALID; | |
3306 | goto error; | |
3307 | } | |
3308 | ||
3309 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3310 | switch (status) { | |
3311 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3312 | ret = 0; |
66ea93b1 JG |
3313 | break; |
3314 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3315 | case LTTNG_ROTATION_STATUS_INVALID: | |
3316 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3317 | break; | |
3318 | default: | |
3319 | ret = -LTTNG_ERR_UNK; | |
3320 | break; | |
3321 | } | |
3322 | error: | |
3323 | lttng_rotation_schedule_destroy(periodic); | |
3324 | return ret; | |
3325 | } | |
3326 | ||
3327 | static | |
3328 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3329 | { | |
3330 | int ret; | |
3331 | enum lttng_rotation_status status; | |
3332 | struct lttng_rotation_schedule *size = | |
3333 | lttng_rotation_schedule_size_threshold_create(); | |
3334 | ||
3335 | if (!size) { | |
3336 | ret = -LTTNG_ERR_NOMEM; | |
3337 | goto error; | |
3338 | } | |
3339 | ||
3340 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3341 | size_bytes); | |
3342 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3343 | ret = -LTTNG_ERR_INVALID; | |
3344 | goto error; | |
3345 | } | |
3346 | ||
3347 | status = lttng_session_add_rotation_schedule(name, size); | |
3348 | switch (status) { | |
3349 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3350 | ret = 0; |
66ea93b1 JG |
3351 | break; |
3352 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3353 | case LTTNG_ROTATION_STATUS_INVALID: | |
3354 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3355 | break; | |
3356 | default: | |
3357 | ret = -LTTNG_ERR_UNK; | |
3358 | break; | |
3359 | } | |
3360 | error: | |
3361 | lttng_rotation_schedule_destroy(size); | |
3362 | return ret; | |
3363 | } | |
3364 | ||
ce6176f2 JG |
3365 | static |
3366 | int process_session_rotation_schedules_node( | |
3367 | xmlNodePtr schedules_node, | |
3368 | uint64_t *rotation_timer_interval, | |
3369 | uint64_t *rotation_size) | |
3370 | { | |
3371 | int ret = 0; | |
3372 | xmlNodePtr child; | |
3373 | ||
3374 | for (child = xmlFirstElementChild(schedules_node); | |
3375 | child; | |
3376 | child = xmlNextElementSibling(child)) { | |
3377 | if (!strcmp((const char *) child->name, | |
3378 | config_element_rotation_schedule_periodic)) { | |
3379 | xmlChar *content; | |
3380 | xmlNodePtr time_us_node; | |
3381 | ||
3382 | /* periodic rotation schedule */ | |
3383 | time_us_node = xmlFirstElementChild(child); | |
3384 | if (!time_us_node || | |
3385 | strcmp((const char *) time_us_node->name, | |
3386 | config_element_rotation_schedule_periodic_time_us)) { | |
3387 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3388 | goto end; | |
3389 | } | |
3390 | ||
3391 | /* time_us child */ | |
3392 | content = xmlNodeGetContent(time_us_node); | |
3393 | if (!content) { | |
3394 | ret = -LTTNG_ERR_NOMEM; | |
3395 | goto end; | |
3396 | } | |
3397 | ret = parse_uint(content, rotation_timer_interval); | |
3398 | free(content); | |
3399 | if (ret) { | |
3400 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3401 | goto end; | |
3402 | } | |
3403 | } else if (!strcmp((const char *) child->name, | |
3404 | config_element_rotation_schedule_size_threshold)) { | |
3405 | xmlChar *content; | |
3406 | xmlNodePtr bytes_node; | |
3407 | ||
3408 | /* size_threshold rotation schedule */ | |
3409 | bytes_node = xmlFirstElementChild(child); | |
3410 | if (!bytes_node || | |
3411 | strcmp((const char *) bytes_node->name, | |
3412 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3413 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3414 | goto end; | |
3415 | } | |
3416 | ||
3417 | /* bytes child */ | |
3418 | content = xmlNodeGetContent(bytes_node); | |
3419 | if (!content) { | |
3420 | ret = -LTTNG_ERR_NOMEM; | |
3421 | goto end; | |
3422 | } | |
3423 | ret = parse_uint(content, rotation_size); | |
3424 | free(content); | |
3425 | if (ret) { | |
3426 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3427 | goto end; | |
3428 | } | |
3429 | } | |
3430 | } | |
3431 | ||
3432 | end: | |
3433 | return ret; | |
3434 | } | |
3435 | ||
dcf266c0 JG |
3436 | static |
3437 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3438 | int overwrite, |
3439 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3440 | { |
3441 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3442 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3443 | rotation_timer_interval = 0, |
3444 | rotation_size = 0; | |
d324faf7 | 3445 | xmlChar *name = NULL; |
9e7c9f56 | 3446 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3447 | xmlNodePtr domains_node = NULL; |
3448 | xmlNodePtr output_node = NULL; | |
3449 | xmlNodePtr node; | |
90936dcf | 3450 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3451 | struct lttng_domain *kernel_domain = NULL; |
3452 | struct lttng_domain *ust_domain = NULL; | |
3453 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3454 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3455 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3456 | |
3457 | for (node = xmlFirstElementChild(session_node); node; | |
3458 | node = xmlNextElementSibling(node)) { | |
3459 | if (!name && !strcmp((const char *) node->name, | |
3460 | config_element_name)) { | |
3461 | /* name */ | |
3462 | xmlChar *node_content = xmlNodeGetContent(node); | |
3463 | if (!node_content) { | |
3464 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3465 | goto error; |
dcf266c0 JG |
3466 | } |
3467 | ||
d324faf7 | 3468 | name = node_content; |
dcf266c0 JG |
3469 | } else if (!domains_node && !strcmp((const char *) node->name, |
3470 | config_element_domains)) { | |
3471 | /* domains */ | |
3472 | domains_node = node; | |
3473 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3474 | config_element_started)) { | |
3475 | /* started */ | |
3476 | xmlChar *node_content = xmlNodeGetContent(node); | |
3477 | if (!node_content) { | |
3478 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3479 | goto error; |
dcf266c0 JG |
3480 | } |
3481 | ||
3482 | ret = parse_bool(node_content, &started); | |
3483 | free(node_content); | |
3484 | if (ret) { | |
3485 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3486 | goto error; |
dcf266c0 JG |
3487 | } |
3488 | } else if (!output_node && !strcmp((const char *) node->name, | |
3489 | config_element_output)) { | |
3490 | /* output */ | |
3491 | output_node = node; | |
9e7c9f56 JR |
3492 | } else if (!shm_path && !strcmp((const char *) node->name, |
3493 | config_element_shared_memory_path)) { | |
3494 | /* shared memory path */ | |
3495 | xmlChar *node_content = xmlNodeGetContent(node); | |
3496 | if (!node_content) { | |
3497 | ret = -LTTNG_ERR_NOMEM; | |
3498 | goto error; | |
3499 | } | |
3500 | ||
3501 | shm_path = node_content; | |
dcf266c0 | 3502 | } else { |
259c2674 JD |
3503 | /* |
3504 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3505 | * rotation_timer_interval. |
3506 | */ | |
3507 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3508 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3509 | if (!strcmp((const char *) attributes_child->name, | |
3510 | config_element_snapshot_mode)) { | |
3511 | /* snapshot_mode */ | |
3512 | xmlChar *snapshot_mode_content = | |
3513 | xmlNodeGetContent(attributes_child); | |
3514 | if (!snapshot_mode_content) { | |
3515 | ret = -LTTNG_ERR_NOMEM; | |
3516 | goto error; | |
3517 | } | |
dcf266c0 | 3518 | |
90936dcf JD |
3519 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3520 | free(snapshot_mode_content); | |
3521 | if (ret) { | |
3522 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3523 | goto error; | |
3524 | } | |
3525 | } else if (!strcmp((const char *) attributes_child->name, | |
3526 | config_element_live_timer_interval)) { | |
3527 | /* live_timer_interval */ | |
3528 | xmlChar *timer_interval_content = | |
3529 | xmlNodeGetContent(attributes_child); | |
3530 | if (!timer_interval_content) { | |
3531 | ret = -LTTNG_ERR_NOMEM; | |
3532 | goto error; | |
3533 | } | |
dcf266c0 | 3534 | |
90936dcf JD |
3535 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3536 | free(timer_interval_content); | |
3537 | if (ret) { | |
3538 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3539 | goto error; | |
3540 | } | |
ce6176f2 JG |
3541 | } else if (!strcmp((const char *) attributes_child->name, |
3542 | config_element_rotation_schedules)) { | |
3543 | ret = process_session_rotation_schedules_node( | |
3544 | attributes_child, | |
3545 | &rotation_timer_interval, | |
3546 | &rotation_size); | |
90936dcf JD |
3547 | if (ret) { |
3548 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3549 | goto error; | |
3550 | } | |
259c2674 | 3551 | |
259c2674 JD |
3552 | } |
3553 | } | |
dcf266c0 JG |
3554 | } |
3555 | } | |
3556 | ||
3557 | if (!name) { | |
3558 | /* Mandatory attribute, as defined in the session XSD */ | |
3559 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3560 | goto error; |
dcf266c0 JG |
3561 | } |
3562 | ||
d324faf7 | 3563 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3564 | /* This is not the session we are looking for */ |
c2da8cde DG |
3565 | ret = -LTTNG_ERR_NO_SESSION; |
3566 | goto error; | |
dcf266c0 JG |
3567 | } |
3568 | ||
3569 | /* Init domains to create the session handles */ | |
3570 | for (node = xmlFirstElementChild(domains_node); node; | |
3571 | node = xmlNextElementSibling(node)) { | |
3572 | struct lttng_domain *domain; | |
3573 | ||
3574 | domain = zmalloc(sizeof(*domain)); | |
3575 | if (!domain) { | |
3576 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3577 | goto error; |
dcf266c0 JG |
3578 | } |
3579 | ||
3580 | ret = init_domain(node, domain); | |
3581 | if (ret) { | |
3582 | goto domain_init_error; | |
3583 | } | |
3584 | ||
3585 | switch (domain->type) { | |
3586 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3587 | if (kernel_domain) { |
3588 | /* Same domain seen twice, invalid! */ | |
3589 | goto domain_init_error; | |
3590 | } | |
dcf266c0 JG |
3591 | kernel_domain = domain; |
3592 | break; | |
3593 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3594 | if (ust_domain) { |
3595 | /* Same domain seen twice, invalid! */ | |
3596 | goto domain_init_error; | |
3597 | } | |
dcf266c0 JG |
3598 | ust_domain = domain; |
3599 | break; | |
3600 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3601 | if (jul_domain) { |
3602 | /* Same domain seen twice, invalid! */ | |
3603 | goto domain_init_error; | |
3604 | } | |
dcf266c0 JG |
3605 | jul_domain = domain; |
3606 | break; | |
5cdb6027 DG |
3607 | case LTTNG_DOMAIN_LOG4J: |
3608 | if (log4j_domain) { | |
3609 | /* Same domain seen twice, invalid! */ | |
3610 | goto domain_init_error; | |
3611 | } | |
3612 | log4j_domain = domain; | |
3613 | break; | |
0e115563 DG |
3614 | case LTTNG_DOMAIN_PYTHON: |
3615 | if (python_domain) { | |
3616 | /* Same domain seen twice, invalid! */ | |
3617 | goto domain_init_error; | |
3618 | } | |
3619 | python_domain = domain; | |
3620 | break; | |
dcf266c0 JG |
3621 | default: |
3622 | WARN("Invalid domain type"); | |
3623 | goto domain_init_error; | |
3624 | } | |
3625 | continue; | |
3626 | domain_init_error: | |
3627 | free(domain); | |
3628 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3629 | goto error; |
dcf266c0 JG |
3630 | } |
3631 | ||
2aaf5fc7 JR |
3632 | /* Apply overrides */ |
3633 | if (overrides) { | |
3634 | if (overrides->session_name) { | |
3635 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3636 | if (!name_override) { | |
3637 | ret = -LTTNG_ERR_NOMEM; | |
3638 | goto error; | |
3639 | } | |
3640 | ||
3641 | /* Overrides the session name to the provided name */ | |
3642 | xmlFree(name); | |
3643 | name = name_override; | |
3644 | } | |
3645 | } | |
3646 | ||
40b4155f | 3647 | if (overwrite) { |
dcf266c0 | 3648 | /* Destroy session if it exists */ |
d324faf7 | 3649 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3650 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3651 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3652 | goto error; |
dcf266c0 JG |
3653 | } |
3654 | } | |
3655 | ||
3656 | /* Create session type depending on output type */ | |
3657 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3658 | ret = create_snapshot_session((const char *) name, output_node, |
3659 | overrides); | |
dcf266c0 JG |
3660 | } else if (live_timer_interval && |
3661 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3662 | ret = create_session((const char *) name, |
1b08cbce | 3663 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3664 | } else { |
3665 | /* regular session */ | |
194dfca0 | 3666 | ret = create_session((const char *) name, |
1b08cbce | 3667 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3668 | } |
dcf266c0 | 3669 | if (ret) { |
c2da8cde | 3670 | goto error; |
dcf266c0 JG |
3671 | } |
3672 | ||
9e7c9f56 JR |
3673 | if (shm_path) { |
3674 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3675 | (const char *) shm_path); |
9e7c9f56 JR |
3676 | if (ret) { |
3677 | goto error; | |
3678 | } | |
3679 | } | |
3680 | ||
dcf266c0 JG |
3681 | for (node = xmlFirstElementChild(domains_node); node; |
3682 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3683 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3684 | if (ret) { |
3685 | goto end; | |
3686 | } | |
3687 | } | |
3688 | ||
66ea93b1 JG |
3689 | if (rotation_timer_interval) { |
3690 | ret = add_periodic_rotation((const char *) name, | |
3691 | rotation_timer_interval); | |
3692 | if (ret < 0) { | |
259c2674 JD |
3693 | goto error; |
3694 | } | |
66ea93b1 JG |
3695 | } |
3696 | if (rotation_size) { | |
3697 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3698 | rotation_size); |
66ea93b1 | 3699 | if (ret < 0) { |
259c2674 JD |
3700 | goto error; |
3701 | } | |
3702 | } | |
3703 | ||
dcf266c0 | 3704 | if (started) { |
d324faf7 | 3705 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3706 | if (ret) { |
3707 | goto end; | |
3708 | } | |
3709 | } | |
c2da8cde | 3710 | |
dcf266c0 | 3711 | end: |
b2579dc1 | 3712 | if (ret < 0) { |
d324faf7 JG |
3713 | ERR("Failed to load session %s: %s", (const char *) name, |
3714 | lttng_strerror(ret)); | |
3715 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3716 | } |
3717 | ||
c2da8cde | 3718 | error: |
dcf266c0 JG |
3719 | free(kernel_domain); |
3720 | free(ust_domain); | |
3721 | free(jul_domain); | |
5cdb6027 | 3722 | free(log4j_domain); |
135a3893 | 3723 | free(python_domain); |
d324faf7 | 3724 | xmlFree(name); |
9e7c9f56 | 3725 | xmlFree(shm_path); |
dcf266c0 JG |
3726 | return ret; |
3727 | } | |
3728 | ||
cf53c06d DG |
3729 | /* |
3730 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3731 | * Return -1 if the path is EPERM. | |
3732 | */ | |
3733 | static int validate_file_read_creds(const char *path) | |
3734 | { | |
3735 | int ret; | |
3736 | ||
a0377dfe | 3737 | LTTNG_ASSERT(path); |
cf53c06d DG |
3738 | |
3739 | /* Can we read the file. */ | |
3740 | ret = access(path, R_OK); | |
3741 | if (!ret) { | |
3742 | goto valid; | |
3743 | } | |
3744 | if (errno == EACCES) { | |
3745 | return -1; | |
3746 | } else { | |
3747 | /* Invalid. */ | |
3748 | return 0; | |
3749 | } | |
3750 | valid: | |
3751 | return 1; | |
3752 | } | |
3753 | ||
dcf266c0 JG |
3754 | static |
3755 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3756 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3757 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3758 | { |
3759 | int ret, session_found = !session_name; | |
3760 | xmlDocPtr doc = NULL; | |
3761 | xmlNodePtr sessions_node; | |
3762 | xmlNodePtr session_node; | |
dcf266c0 | 3763 | |
a0377dfe FD |
3764 | LTTNG_ASSERT(path); |
3765 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3766 | |
cf53c06d DG |
3767 | ret = validate_file_read_creds(path); |
3768 | if (ret != 1) { | |
3769 | if (ret == -1) { | |
3770 | ret = -LTTNG_ERR_EPERM; | |
3771 | } else { | |
3772 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3773 | } | |
dcf266c0 JG |
3774 | goto end; |
3775 | } | |
3776 | ||
3777 | doc = xmlParseFile(path); | |
3778 | if (!doc) { | |
3779 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3780 | goto end; | |
3781 | } | |
3782 | ||
3783 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3784 | if (ret) { | |
3785 | ERR("Session configuration file validation failed"); | |
3786 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3787 | goto end; | |
3788 | } | |
3789 | ||
3790 | sessions_node = xmlDocGetRootElement(doc); | |
3791 | if (!sessions_node) { | |
55c9e7ca | 3792 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3793 | goto end; |
3794 | } | |
3795 | ||
3796 | for (session_node = xmlFirstElementChild(sessions_node); | |
3797 | session_node; session_node = | |
3798 | xmlNextElementSibling(session_node)) { | |
3799 | ret = process_session_node(session_node, | |
1b08cbce | 3800 | session_name, overwrite, overrides); |
317ea246 JG |
3801 | if (!session_name && ret) { |
3802 | /* Loading error occurred. */ | |
3803 | goto end; | |
3804 | } else if (session_name) { | |
3805 | if (ret == 0) { | |
3806 | /* Target session found and loaded */ | |
3807 | session_found = 1; | |
3808 | break; | |
3809 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3810 | /* | |
3811 | * Ignore this error, we are looking for a | |
3812 | * specific session. | |
3813 | */ | |
3814 | ret = 0; | |
3815 | } else { | |
3816 | /* Loading error occurred. */ | |
3817 | goto end; | |
3818 | } | |
dcf266c0 JG |
3819 | } |
3820 | } | |
3821 | end: | |
3822 | xmlFreeDoc(doc); | |
3823 | if (!ret) { | |
a96bc65d | 3824 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3825 | } |
3826 | return ret; | |
3827 | } | |
3828 | ||
3829 | static | |
3830 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3831 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3832 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3833 | { |
3834 | int ret, session_found = !session_name; | |
dcf266c0 | 3835 | DIR *directory = NULL; |
cce35f91 JG |
3836 | struct lttng_dynamic_buffer file_path; |
3837 | size_t path_len; | |
dcf266c0 | 3838 | |
a0377dfe FD |
3839 | LTTNG_ASSERT(path); |
3840 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3841 | path_len = strlen(path); |
3842 | lttng_dynamic_buffer_init(&file_path); | |
3843 | if (path_len >= LTTNG_PATH_MAX) { | |
3844 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3845 | path, path_len, LTTNG_PATH_MAX); | |
3846 | ret = -LTTNG_ERR_INVALID; | |
3847 | goto end; | |
3848 | } | |
dcf266c0 | 3849 | |
4af16958 DG |
3850 | directory = opendir(path); |
3851 | if (!directory) { | |
11143783 DG |
3852 | switch (errno) { |
3853 | case ENOTDIR: | |
0f0a81b5 DG |
3854 | /* Try the file loading. */ |
3855 | break; | |
11143783 DG |
3856 | case ENOENT: |
3857 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3858 | goto end; | |
3859 | default: | |
0f0a81b5 DG |
3860 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3861 | goto end; | |
4af16958 | 3862 | } |
dcf266c0 | 3863 | } |
4af16958 | 3864 | if (directory) { |
cce35f91 | 3865 | size_t file_path_root_len; |
dcf266c0 | 3866 | |
cce35f91 JG |
3867 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3868 | LTTNG_PATH_MAX); | |
3869 | if (ret) { | |
3870 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3871 | goto end; |
3872 | } | |
3873 | ||
cce35f91 JG |
3874 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3875 | if (ret) { | |
dcf266c0 | 3876 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3877 | goto end; |
3878 | } | |
3879 | ||
cce35f91 JG |
3880 | if (file_path.data[file_path.size - 1] != '/') { |
3881 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3882 | if (ret) { | |
3883 | ret = -LTTNG_ERR_NOMEM; | |
3884 | goto end; | |
3885 | } | |
dcf266c0 | 3886 | } |
cce35f91 | 3887 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3888 | |
3889 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3890 | for (;;) { |
3891 | size_t file_name_len; | |
3892 | struct dirent *result; | |
3893 | ||
3894 | /* | |
3895 | * When the end of the directory stream is reached, NULL | |
3896 | * is returned and errno is kept unchanged. When an | |
3897 | * error occurs, NULL is returned and errno is set | |
3898 | * accordingly. To distinguish between the two, set | |
3899 | * errno to zero before calling readdir(). | |
3900 | * | |
3901 | * On success, readdir() returns a pointer to a dirent | |
3902 | * structure. This structure may be statically | |
3903 | * allocated, do not attempt to free(3) it. | |
3904 | */ | |
3905 | errno = 0; | |
3906 | result = readdir(directory); | |
3907 | ||
ff86d8d0 | 3908 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3909 | if (!result) { |
3910 | if (errno) { | |
3911 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3912 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3913 | goto end; | |
3914 | } | |
3915 | break; | |
3916 | } | |
3917 | ||
3918 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3919 | |
3920 | if (file_name_len <= | |
3921 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3922 | continue; | |
3923 | } | |
3924 | ||
cce35f91 JG |
3925 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3926 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3927 | result->d_name, | |
3928 | /* +1 to account for NULL terminator. */ | |
3929 | file_path.size + file_name_len + 1, | |
3930 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3931 | continue; |
3932 | } | |
3933 | ||
cce35f91 | 3934 | /* Does the file end with .lttng? */ |
dcf266c0 | 3935 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3936 | result->d_name + file_name_len - sizeof( |
3937 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3938 | continue; |
3939 | } | |
3940 | ||
cce35f91 JG |
3941 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3942 | file_name_len + 1); | |
3943 | if (ret) { | |
3944 | ret = -LTTNG_ERR_NOMEM; | |
3945 | goto end; | |
3946 | } | |
dcf266c0 | 3947 | |
cce35f91 | 3948 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3949 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3950 | if (session_name && |
3951 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3952 | session_found = 1; |
3953 | break; | |
3954 | } | |
55c9e7ca JR |
3955 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3956 | goto end; | |
3957 | } | |
cce35f91 JG |
3958 | /* |
3959 | * Reset the buffer's size to the location of the | |
3960 | * path's trailing '/'. | |
3961 | */ | |
3962 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3963 | file_path_root_len); | |
3964 | if (ret) { | |
3965 | ret = -LTTNG_ERR_UNK; | |
3966 | goto end; | |
3967 | } | |
dcf266c0 | 3968 | } |
dcf266c0 JG |
3969 | } else { |
3970 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3971 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3972 | if (ret) { |
3973 | goto end; | |
dcf266c0 | 3974 | } |
55c9e7ca | 3975 | session_found = 1; |
dcf266c0 JG |
3976 | } |
3977 | ||
55c9e7ca | 3978 | ret = 0; |
dcf266c0 JG |
3979 | end: |
3980 | if (directory) { | |
3981 | if (closedir(directory)) { | |
3982 | PERROR("closedir"); | |
3983 | } | |
3984 | } | |
55c9e7ca JR |
3985 | if (!ret && !session_found) { |
3986 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3987 | } |
cce35f91 | 3988 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3989 | return ret; |
3990 | } | |
3991 | ||
ab38c13f DG |
3992 | /* |
3993 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3994 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3995 | */ |
3996 | static int validate_path_creds(const char *path) | |
3997 | { | |
3998 | int ret, uid = getuid(); | |
3999 | struct stat buf; | |
4000 | ||
a0377dfe | 4001 | LTTNG_ASSERT(path); |
ab38c13f | 4002 | |
cf53c06d | 4003 | if (uid == 0) { |
ab38c13f DG |
4004 | goto valid; |
4005 | } | |
4006 | ||
4007 | ret = stat(path, &buf); | |
4008 | if (ret < 0) { | |
4009 | if (errno != ENOENT) { | |
4010 | PERROR("stat"); | |
4011 | } | |
ab38c13f DG |
4012 | goto valid; |
4013 | } | |
4014 | ||
4015 | if (buf.st_uid != uid) { | |
4016 | goto invalid; | |
4017 | } | |
4018 | ||
4019 | valid: | |
ab38c13f | 4020 | return 1; |
cf53c06d DG |
4021 | invalid: |
4022 | return 0; | |
ab38c13f DG |
4023 | } |
4024 | ||
dcf266c0 JG |
4025 | LTTNG_HIDDEN |
4026 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
4027 | int overwrite, unsigned int autoload, |
4028 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4029 | { |
4030 | int ret; | |
6c66fa0f | 4031 | bool session_loaded = false; |
cf53c06d | 4032 | const char *path_ptr = NULL; |
dcf266c0 JG |
4033 | struct session_config_validation_ctx validation_ctx = { 0 }; |
4034 | ||
4035 | ret = init_session_config_validation_ctx(&validation_ctx); | |
4036 | if (ret) { | |
4037 | goto end; | |
4038 | } | |
4039 | ||
4040 | if (!path) { | |
4f00620d | 4041 | const char *home_path; |
ab38c13f DG |
4042 | const char *sys_path; |
4043 | ||
dcf266c0 | 4044 | /* Try home path */ |
ab38c13f | 4045 | home_path = utils_get_home_dir(); |
dcf266c0 | 4046 | if (home_path) { |
db8196db | 4047 | char path_buf[PATH_MAX]; |
dcf266c0 | 4048 | |
d4fcf703 DG |
4049 | /* |
4050 | * Try user session configuration path. Ignore error here so we can | |
4051 | * continue loading the system wide sessions. | |
4052 | */ | |
ab38c13f | 4053 | if (autoload) { |
db8196db SM |
4054 | ret = snprintf(path_buf, sizeof(path_buf), |
4055 | DEFAULT_SESSION_HOME_CONFIGPATH | |
4056 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
4057 | home_path); | |
cf53c06d DG |
4058 | if (ret < 0) { |
4059 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 4060 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4061 | goto end; |
4062 | } | |
4063 | ||
4064 | /* | |
4065 | * Credentials are only validated for the autoload in order to | |
4066 | * avoid any user session daemon to try to load kernel sessions | |
4067 | * automatically and failing all the times. | |
4068 | */ | |
db8196db | 4069 | ret = validate_path_creds(path_buf); |
cf53c06d | 4070 | if (ret) { |
db8196db | 4071 | path_ptr = path_buf; |
cf53c06d | 4072 | } |
ab38c13f | 4073 | } else { |
db8196db SM |
4074 | ret = snprintf(path_buf, sizeof(path_buf), |
4075 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
4076 | home_path); | |
cf53c06d DG |
4077 | if (ret < 0) { |
4078 | PERROR("snprintf session home config path"); | |
55c9e7ca | 4079 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4080 | goto end; |
4081 | } | |
db8196db | 4082 | path_ptr = path_buf; |
ab38c13f | 4083 | } |
cf53c06d DG |
4084 | if (path_ptr) { |
4085 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4086 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
4087 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4088 | goto end; | |
4089 | } | |
4090 | /* | |
4091 | * Continue even if the session was found since we have to try | |
4092 | * the system wide sessions. | |
4093 | */ | |
6c66fa0f | 4094 | session_loaded = true; |
ab38c13f | 4095 | } |
d4fcf703 | 4096 | } |
ab38c13f | 4097 | |
cf53c06d DG |
4098 | /* Reset path pointer for the system wide dir. */ |
4099 | path_ptr = NULL; | |
4100 | ||
d4fcf703 DG |
4101 | /* Try system wide configuration directory. */ |
4102 | if (autoload) { | |
4103 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
4104 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
4105 | ret = validate_path_creds(sys_path); |
4106 | if (ret) { | |
4107 | path_ptr = sys_path; | |
4108 | } | |
d4fcf703 | 4109 | } else { |
cf53c06d DG |
4110 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
4111 | path_ptr = sys_path; | |
d4fcf703 DG |
4112 | } |
4113 | ||
cf53c06d DG |
4114 | if (path_ptr) { |
4115 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4116 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
4117 | if (!ret) { |
4118 | session_loaded = true; | |
4119 | } | |
55c9e7ca JR |
4120 | } else { |
4121 | ret = 0; | |
dcf266c0 JG |
4122 | } |
4123 | } else { | |
4124 | ret = access(path, F_OK); | |
4125 | if (ret < 0) { | |
4126 | PERROR("access"); | |
4127 | switch (errno) { | |
4128 | case ENOENT: | |
4129 | ret = -LTTNG_ERR_INVALID; | |
4130 | WARN("Session configuration path does not exist."); | |
4131 | break; | |
4132 | case EACCES: | |
4133 | ret = -LTTNG_ERR_EPERM; | |
4134 | break; | |
4135 | default: | |
4136 | ret = -LTTNG_ERR_UNK; | |
4137 | break; | |
4138 | } | |
4139 | goto end; | |
4140 | } | |
4141 | ||
4142 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 4143 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4144 | } |
4145 | end: | |
4146 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
4147 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
4148 | /* | |
4149 | * Don't report an error if no sessions are found when called | |
4150 | * without a session_name or a search path. | |
4151 | */ | |
4152 | ret = 0; | |
4153 | } | |
6c66fa0f JG |
4154 | |
4155 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
4156 | /* A matching session was found in one of the search paths. */ | |
4157 | ret = 0; | |
4158 | } | |
dcf266c0 JG |
4159 | return ret; |
4160 | } | |
56766c75 JG |
4161 | |
4162 | static | |
4163 | void __attribute__((destructor)) session_config_exit(void) | |
4164 | { | |
4165 | xmlCleanupParser(); | |
4166 | } |