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 | ||
ca806b0b | 54 | const char * const config_element_all = "all"; |
4bd69c5f SM |
55 | LTTNG_EXPORT const char * const config_str_yes = "yes"; |
56 | LTTNG_EXPORT const char * const config_str_true = "true"; | |
57 | LTTNG_EXPORT const char * const config_str_on = "on"; | |
58 | LTTNG_EXPORT const char * const config_str_no = "no"; | |
59 | LTTNG_EXPORT const char * const config_str_false = "false"; | |
60 | LTTNG_EXPORT const char * const config_str_off = "off"; | |
61 | LTTNG_EXPORT const char * const config_xml_encoding = "UTF-8"; | |
62 | LTTNG_EXPORT const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ | |
63 | LTTNG_EXPORT const char * const config_xml_indent_string = "\t"; | |
64 | LTTNG_EXPORT const char * const config_xml_true = "true"; | |
65 | LTTNG_EXPORT 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 | |
ca806b0b SM |
84 | const char * const config_element_userspace_probe_lookup = "lookup_method"; |
85 | const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
86 | const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
87 | const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
88 | const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
89 | const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
90 | const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
91 | const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
92 | const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
93 | 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"; | |
ca806b0b SM |
102 | const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
103 | 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"; | |
ca806b0b SM |
109 | const char * const config_element_discarded_events = "discarded_events"; |
110 | 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"; | |
ca806b0b SM |
115 | const char * const config_element_context_perf = "perf"; |
116 | const char * const config_element_context_app = "app"; | |
117 | const char * const config_element_context_app_provider_name = "provider_name"; | |
118 | 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"; | |
ca806b0b | 125 | 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 | 137 | |
ca806b0b SM |
138 | const char * const config_element_process_attr_id = "id"; |
139 | const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
140 | const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
141 | const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
142 | const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
143 | const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
144 | const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
145 | const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
146 | const char * const config_element_process_attr_values = "process_attr_values"; | |
147 | const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
148 | const char * const config_element_process_attr_pid_value = "pid"; | |
149 | const char * const config_element_process_attr_vpid_value = "vpid"; | |
150 | const char * const config_element_process_attr_uid_value = "uid"; | |
151 | const char * const config_element_process_attr_vuid_value = "vuid"; | |
152 | const char * const config_element_process_attr_gid_value = "gid"; | |
153 | const char * const config_element_process_attr_vgid_value = "vgid"; | |
154 | const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 155 | |
f7af9a72 | 156 | /* Used for support of legacy tracker serialization (< 2.12). */ |
ca806b0b SM |
157 | const char * const config_element_trackers_legacy = "trackers"; |
158 | const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
159 | const char * const config_element_tracker_targets_legacy = "targets"; | |
160 | const char * const config_element_tracker_pid_target_legacy = "pid_target"; | |
161 | const char * const config_element_tracker_pid_legacy = "pid"; | |
162 | ||
163 | const char * const config_element_rotation_schedules = "rotation_schedules"; | |
164 | const char * const config_element_rotation_schedule_periodic = "periodic"; | |
165 | const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
166 | const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
167 | 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"; | |
ca806b0b | 192 | 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"; |
ca806b0b SM |
213 | const char * const config_event_context_app = "APP"; |
214 | const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
215 | const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
216 | const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
217 | const char * const config_event_context_migratable = "MIGRATABLE"; | |
218 | const char * const config_event_context_callstack_user= "CALLSTACK_USER"; | |
219 | const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
220 | const char * const config_event_context_cgroup_ns = "CGROUP_NS"; | |
221 | const char * const config_event_context_ipc_ns = "IPC_NS"; | |
222 | const char * const config_event_context_mnt_ns = "MNT_NS"; | |
223 | const char * const config_event_context_net_ns = "NET_NS"; | |
224 | const char * const config_event_context_pid_ns = "PID_NS"; | |
225 | const char * const config_event_context_time_ns = "TIME_NS"; | |
226 | const char * const config_event_context_user_ns = "USER_NS"; | |
227 | const char * const config_event_context_uts_ns = "UTS_NS"; | |
228 | const char * const config_event_context_uid = "UID"; | |
229 | const char * const config_event_context_euid = "EUID"; | |
230 | const char * const config_event_context_suid = "SUID"; | |
231 | const char * const config_event_context_gid = "GID"; | |
232 | const char * const config_event_context_egid = "EGID"; | |
233 | const char * const config_event_context_sgid = "SGID"; | |
234 | const char * const config_event_context_vuid = "VUID"; | |
235 | const char * const config_event_context_veuid = "VEUID"; | |
236 | const char * const config_event_context_vsuid = "VSUID"; | |
237 | const char * const config_event_context_vgid = "VGID"; | |
238 | const char * const config_event_context_vegid = "VEGID"; | |
239 | const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 240 | |
fbd987c9 | 241 | /* Deprecated symbols */ |
4bd69c5f | 242 | LTTNG_EXPORT const char * const config_element_perf; |
fbd987c9 | 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 | ||
1501a7f3 JG |
280 | int config_get_section_entries(const char *override_path, const char *section, |
281 | config_entry_handler_cb handler, void *user_data) | |
282 | { | |
283 | int ret = 0; | |
4f00620d | 284 | const char *path; |
1501a7f3 JG |
285 | FILE *config_file = NULL; |
286 | struct handler_filter_args filter = { section, handler, user_data }; | |
287 | ||
7ab02a27 DG |
288 | /* First, try system-wide conf. file. */ |
289 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
290 | ||
291 | config_file = fopen(path, "r"); | |
292 | if (config_file) { | |
293 | DBG("Loading daemon conf file at %s", path); | |
294 | /* | |
295 | * Return value is not very important here since error or not, we | |
296 | * continue and try the next possible conf. file. | |
297 | */ | |
298 | (void) ini_parse_file(config_file, | |
299 | (ini_entry_handler) config_entry_handler_filter, | |
300 | (void *) &filter); | |
301 | fclose(config_file); | |
302 | } | |
303 | ||
304 | /* Second is the user local configuration. */ | |
305 | path = utils_get_home_dir(); | |
306 | if (path) { | |
307 | char fullpath[PATH_MAX]; | |
308 | ||
309 | ret = snprintf(fullpath, sizeof(fullpath), | |
310 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
311 | if (ret < 0) { | |
312 | PERROR("snprintf user conf. path"); | |
313 | goto error; | |
314 | } | |
315 | ||
316 | config_file = fopen(fullpath, "r"); | |
317 | if (config_file) { | |
318 | DBG("Loading daemon user conf file at %s", path); | |
319 | /* | |
320 | * Return value is not very important here since error or not, we | |
321 | * continue and try the next possible conf. file. | |
322 | */ | |
323 | (void) ini_parse_file(config_file, | |
324 | (ini_entry_handler) config_entry_handler_filter, | |
325 | (void *) &filter); | |
326 | fclose(config_file); | |
327 | } | |
328 | } | |
329 | ||
330 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
331 | if (override_path) { |
332 | config_file = fopen(override_path, "r"); | |
333 | if (config_file) { | |
7ab02a27 DG |
334 | DBG("Loading daemon command line conf file at %s", override_path); |
335 | (void) ini_parse_file(config_file, | |
336 | (ini_entry_handler) config_entry_handler_filter, | |
337 | (void *) &filter); | |
338 | fclose(config_file); | |
1501a7f3 JG |
339 | } else { |
340 | ERR("Failed to open daemon configuration file at %s", | |
341 | override_path); | |
342 | ret = -ENOENT; | |
7ab02a27 | 343 | goto error; |
1501a7f3 JG |
344 | } |
345 | } | |
346 | ||
7ab02a27 DG |
347 | /* Everything went well. */ |
348 | ret = 0; | |
1501a7f3 | 349 | |
7ab02a27 | 350 | error: |
1501a7f3 JG |
351 | return ret; |
352 | } | |
353 | ||
1501a7f3 JG |
354 | int config_parse_value(const char *value) |
355 | { | |
356 | int i, ret = 0; | |
357 | char *endptr, *lower_str; | |
358 | size_t len; | |
359 | unsigned long v; | |
360 | ||
361 | len = strlen(value); | |
362 | if (!len) { | |
363 | ret = -1; | |
364 | goto end; | |
365 | } | |
366 | ||
367 | v = strtoul(value, &endptr, 10); | |
368 | if (endptr != value) { | |
369 | ret = v; | |
370 | goto end; | |
371 | } | |
372 | ||
373 | lower_str = zmalloc(len + 1); | |
374 | if (!lower_str) { | |
375 | PERROR("zmalloc"); | |
376 | ret = -errno; | |
377 | goto end; | |
378 | } | |
379 | ||
380 | for (i = 0; i < len; i++) { | |
381 | lower_str[i] = tolower(value[i]); | |
382 | } | |
383 | ||
384 | if (!strcmp(lower_str, config_str_yes) || | |
385 | !strcmp(lower_str, config_str_true) || | |
386 | !strcmp(lower_str, config_str_on)) { | |
387 | ret = 1; | |
388 | } else if (!strcmp(lower_str, config_str_no) || | |
389 | !strcmp(lower_str, config_str_false) || | |
390 | !strcmp(lower_str, config_str_off)) { | |
391 | ret = 0; | |
392 | } else { | |
393 | ret = -1; | |
394 | } | |
395 | ||
396 | free(lower_str); | |
397 | end: | |
398 | return ret; | |
399 | } | |
36f2332b JG |
400 | |
401 | /* | |
402 | * Returns a xmlChar string which must be released using xmlFree(). | |
403 | */ | |
404 | static xmlChar *encode_string(const char *in_str) | |
405 | { | |
406 | xmlChar *out_str = NULL; | |
407 | xmlCharEncodingHandlerPtr handler; | |
408 | int out_len, ret, in_len; | |
409 | ||
a0377dfe | 410 | LTTNG_ASSERT(in_str); |
36f2332b JG |
411 | |
412 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
413 | if (!handler) { | |
414 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
415 | goto end; | |
416 | } | |
417 | ||
418 | in_len = strlen(in_str); | |
419 | /* | |
f76d886f JG |
420 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
421 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 422 | */ |
f76d886f | 423 | out_len = (in_len * 4) + 1; |
36f2332b JG |
424 | out_str = xmlMalloc(out_len); |
425 | if (!out_str) { | |
426 | goto end; | |
427 | } | |
428 | ||
429 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
430 | if (ret < 0) { | |
431 | xmlFree(out_str); | |
432 | out_str = NULL; | |
433 | goto end; | |
434 | } | |
435 | ||
436 | /* out_len is now the size of out_str */ | |
437 | out_str[out_len] = '\0'; | |
438 | end: | |
439 | return out_str; | |
440 | } | |
441 | ||
705bb62f | 442 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
443 | { |
444 | int ret; | |
445 | struct config_writer *writer; | |
446 | xmlOutputBufferPtr buffer; | |
447 | ||
448 | writer = zmalloc(sizeof(struct config_writer)); | |
449 | if (!writer) { | |
450 | PERROR("zmalloc config_writer_create"); | |
451 | goto end; | |
452 | } | |
453 | ||
454 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
455 | if (!buffer) { | |
456 | goto error_destroy; | |
457 | } | |
458 | ||
459 | writer->writer = xmlNewTextWriter(buffer); | |
460 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
461 | config_xml_encoding, NULL); | |
462 | if (ret < 0) { | |
463 | goto error_destroy; | |
464 | } | |
465 | ||
466 | ret = xmlTextWriterSetIndentString(writer->writer, | |
467 | BAD_CAST config_xml_indent_string); | |
705bb62f | 468 | if (ret) { |
36f2332b JG |
469 | goto error_destroy; |
470 | } | |
471 | ||
705bb62f JRJ |
472 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
473 | if (ret) { | |
36f2332b JG |
474 | goto error_destroy; |
475 | } | |
476 | ||
477 | end: | |
478 | return writer; | |
479 | error_destroy: | |
480 | config_writer_destroy(writer); | |
481 | return NULL; | |
482 | } | |
483 | ||
36f2332b JG |
484 | int config_writer_destroy(struct config_writer *writer) |
485 | { | |
486 | int ret = 0; | |
487 | ||
488 | if (!writer) { | |
489 | ret = -EINVAL; | |
490 | goto end; | |
491 | } | |
492 | ||
493 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
494 | WARN("Could not close XML document"); | |
495 | ret = -EIO; | |
496 | } | |
497 | ||
498 | if (writer->writer) { | |
499 | xmlFreeTextWriter(writer->writer); | |
500 | } | |
501 | ||
502 | free(writer); | |
503 | end: | |
504 | return ret; | |
505 | } | |
506 | ||
36f2332b JG |
507 | int config_writer_open_element(struct config_writer *writer, |
508 | const char *element_name) | |
509 | { | |
510 | int ret; | |
511 | xmlChar *encoded_element_name; | |
512 | ||
513 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
514 | ret = -1; | |
515 | goto end; | |
516 | } | |
517 | ||
518 | encoded_element_name = encode_string(element_name); | |
519 | if (!encoded_element_name) { | |
520 | ret = -1; | |
521 | goto end; | |
522 | } | |
523 | ||
524 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
525 | xmlFree(encoded_element_name); | |
526 | end: | |
28676a1d | 527 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
528 | } |
529 | ||
e10b6a1c JG |
530 | int config_writer_write_attribute(struct config_writer *writer, |
531 | const char *name, const char *value) | |
532 | { | |
533 | int ret; | |
534 | xmlChar *encoded_name = NULL; | |
535 | xmlChar *encoded_value = NULL; | |
536 | ||
537 | if (!writer || !writer->writer || !name || !name[0]) { | |
538 | ret = -1; | |
539 | goto end; | |
540 | } | |
541 | ||
542 | encoded_name = encode_string(name); | |
543 | if (!encoded_name) { | |
544 | ret = -1; | |
545 | goto end; | |
546 | } | |
547 | ||
548 | encoded_value = encode_string(value); | |
549 | if (!encoded_value) { | |
550 | ret = -1; | |
551 | goto end; | |
552 | } | |
553 | ||
554 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
555 | encoded_value); | |
556 | end: | |
557 | xmlFree(encoded_name); | |
558 | xmlFree(encoded_value); | |
559 | return ret >= 0 ? 0 : ret; | |
560 | } | |
561 | ||
36f2332b JG |
562 | int config_writer_close_element(struct config_writer *writer) |
563 | { | |
564 | int ret; | |
565 | ||
566 | if (!writer || !writer->writer) { | |
567 | ret = -1; | |
568 | goto end; | |
569 | } | |
570 | ||
571 | ret = xmlTextWriterEndElement(writer->writer); | |
572 | end: | |
28676a1d | 573 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
574 | } |
575 | ||
36f2332b JG |
576 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
577 | const char *element_name, uint64_t value) | |
578 | { | |
579 | int ret; | |
580 | xmlChar *encoded_element_name; | |
581 | ||
582 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
583 | ret = -1; | |
584 | goto end; | |
585 | } | |
586 | ||
587 | encoded_element_name = encode_string(element_name); | |
588 | if (!encoded_element_name) { | |
589 | ret = -1; | |
590 | goto end; | |
591 | } | |
592 | ||
593 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
594 | encoded_element_name, "%" PRIu64, value); | |
595 | xmlFree(encoded_element_name); | |
596 | end: | |
28676a1d | 597 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
598 | } |
599 | ||
36f2332b JG |
600 | int config_writer_write_element_signed_int(struct config_writer *writer, |
601 | const char *element_name, int64_t value) | |
602 | { | |
603 | int ret; | |
604 | xmlChar *encoded_element_name; | |
605 | ||
606 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
607 | ret = -1; | |
608 | goto end; | |
609 | } | |
610 | ||
611 | encoded_element_name = encode_string(element_name); | |
612 | if (!encoded_element_name) { | |
613 | ret = -1; | |
614 | goto end; | |
615 | } | |
616 | ||
617 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
618 | encoded_element_name, "%" PRIi64, value); | |
619 | xmlFree(encoded_element_name); | |
620 | end: | |
28676a1d | 621 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
622 | } |
623 | ||
36f2332b JG |
624 | int config_writer_write_element_bool(struct config_writer *writer, |
625 | const char *element_name, int value) | |
626 | { | |
627 | return config_writer_write_element_string(writer, element_name, | |
628 | value ? config_xml_true : config_xml_false); | |
629 | } | |
630 | ||
2b166400 JR |
631 | int config_writer_write_element_double(struct config_writer *writer, |
632 | const char *element_name, | |
633 | double value) | |
634 | { | |
635 | int ret; | |
636 | xmlChar *encoded_element_name; | |
637 | ||
638 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
639 | ret = -1; | |
640 | goto end; | |
641 | } | |
642 | ||
643 | encoded_element_name = encode_string(element_name); | |
644 | if (!encoded_element_name) { | |
645 | ret = -1; | |
646 | goto end; | |
647 | } | |
648 | ||
649 | ret = xmlTextWriterWriteFormatElement( | |
650 | writer->writer, encoded_element_name, "%f", value); | |
651 | xmlFree(encoded_element_name); | |
652 | end: | |
653 | return ret >= 0 ? 0 : ret; | |
654 | } | |
655 | ||
36f2332b JG |
656 | int config_writer_write_element_string(struct config_writer *writer, |
657 | const char *element_name, const char *value) | |
658 | { | |
659 | int ret; | |
660 | xmlChar *encoded_element_name = NULL; | |
661 | xmlChar *encoded_value = NULL; | |
662 | ||
663 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
664 | !value) { | |
665 | ret = -1; | |
666 | goto end; | |
667 | } | |
668 | ||
669 | encoded_element_name = encode_string(element_name); | |
670 | if (!encoded_element_name) { | |
671 | ret = -1; | |
672 | goto end; | |
673 | } | |
674 | ||
675 | encoded_value = encode_string(value); | |
676 | if (!encoded_value) { | |
677 | ret = -1; | |
678 | goto end; | |
679 | } | |
680 | ||
681 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 682 | encoded_value); |
36f2332b JG |
683 | end: |
684 | xmlFree(encoded_element_name); | |
685 | xmlFree(encoded_value); | |
28676a1d | 686 | return ret >= 0 ? 0 : ret; |
36f2332b | 687 | } |
dcf266c0 JG |
688 | |
689 | static | |
690 | void xml_error_handler(void *ctx, const char *format, ...) | |
691 | { | |
692 | char *errMsg; | |
693 | va_list args; | |
694 | int ret; | |
695 | ||
696 | va_start(args, format); | |
697 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 698 | va_end(args); |
dcf266c0 JG |
699 | if (ret == -1) { |
700 | ERR("String allocation failed in xml error handler"); | |
701 | return; | |
702 | } | |
dcf266c0 JG |
703 | |
704 | fprintf(stderr, "XML Error: %s", errMsg); | |
705 | free(errMsg); | |
706 | } | |
707 | ||
708 | static | |
709 | void fini_session_config_validation_ctx( | |
710 | struct session_config_validation_ctx *ctx) | |
711 | { | |
712 | if (ctx->parser_ctx) { | |
713 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
714 | } | |
715 | ||
716 | if (ctx->schema) { | |
717 | xmlSchemaFree(ctx->schema); | |
718 | } | |
719 | ||
720 | if (ctx->schema_validation_ctx) { | |
721 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
722 | } | |
723 | ||
724 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
725 | } | |
726 | ||
54e399cb | 727 | static |
a3ecaea8 | 728 | char *get_session_config_xsd_path(void) |
54e399cb JG |
729 | { |
730 | char *xsd_path; | |
e8fa9fb0 | 731 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
732 | size_t base_path_len; |
733 | size_t max_path_len; | |
734 | ||
735 | if (!base_path) { | |
736 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
737 | } | |
738 | ||
739 | base_path_len = strlen(base_path); | |
740 | max_path_len = base_path_len + | |
741 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
742 | xsd_path = zmalloc(max_path_len); | |
743 | if (!xsd_path) { | |
744 | goto end; | |
745 | } | |
746 | ||
00a7f6f8 | 747 | strcpy(xsd_path, base_path); |
54e399cb JG |
748 | if (xsd_path[base_path_len - 1] != '/') { |
749 | xsd_path[base_path_len++] = '/'; | |
750 | } | |
751 | ||
00a7f6f8 | 752 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
753 | end: |
754 | return xsd_path; | |
755 | } | |
756 | ||
dcf266c0 JG |
757 | static |
758 | int init_session_config_validation_ctx( | |
759 | struct session_config_validation_ctx *ctx) | |
760 | { | |
761 | int ret; | |
54e399cb JG |
762 | char *xsd_path = get_session_config_xsd_path(); |
763 | ||
764 | if (!xsd_path) { | |
765 | ret = -LTTNG_ERR_NOMEM; | |
766 | goto end; | |
767 | } | |
dcf266c0 | 768 | |
54e399cb | 769 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
770 | if (!ctx->parser_ctx) { |
771 | ERR("XSD parser context creation failed"); | |
772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
773 | goto end; | |
774 | } | |
775 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
776 | xml_error_handler, NULL); | |
777 | ||
778 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
779 | if (!ctx->schema) { | |
780 | ERR("XSD parsing failed"); | |
781 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
782 | goto end; | |
783 | } | |
784 | ||
785 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
786 | if (!ctx->schema_validation_ctx) { | |
787 | ERR("XSD validation context creation failed"); | |
788 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
789 | goto end; | |
790 | } | |
791 | ||
792 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
793 | xml_error_handler, NULL); | |
794 | ret = 0; | |
795 | ||
796 | end: | |
797 | if (ret) { | |
798 | fini_session_config_validation_ctx(ctx); | |
799 | } | |
800 | ||
54e399cb | 801 | free(xsd_path); |
dcf266c0 JG |
802 | return ret; |
803 | } | |
804 | ||
805 | static | |
806 | int parse_uint(xmlChar *str, uint64_t *val) | |
807 | { | |
808 | int ret; | |
809 | char *endptr; | |
810 | ||
811 | if (!str || !val) { | |
812 | ret = -1; | |
813 | goto end; | |
814 | } | |
815 | ||
816 | *val = strtoull((const char *) str, &endptr, 10); | |
817 | if (!endptr || *endptr) { | |
818 | ret = -1; | |
819 | } else { | |
820 | ret = 0; | |
821 | } | |
822 | ||
823 | end: | |
824 | return ret; | |
825 | } | |
826 | ||
827 | static | |
828 | int parse_int(xmlChar *str, int64_t *val) | |
829 | { | |
830 | int ret; | |
831 | char *endptr; | |
832 | ||
833 | if (!str || !val) { | |
834 | ret = -1; | |
835 | goto end; | |
836 | } | |
837 | ||
838 | *val = strtoll((const char *) str, &endptr, 10); | |
839 | if (!endptr || *endptr) { | |
840 | ret = -1; | |
841 | } else { | |
842 | ret = 0; | |
843 | } | |
844 | ||
845 | end: | |
846 | return ret; | |
847 | } | |
848 | ||
849 | static | |
850 | int parse_bool(xmlChar *str, int *val) | |
851 | { | |
852 | int ret = 0; | |
853 | ||
854 | if (!str || !val) { | |
855 | ret = -1; | |
856 | goto end; | |
857 | } | |
858 | ||
47945b17 SM |
859 | if (!strcmp((const char *) str, config_xml_true) || |
860 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 861 | *val = 1; |
47945b17 SM |
862 | } else if (!strcmp((const char *) str, config_xml_false) || |
863 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
864 | *val = 0; |
865 | } else { | |
a22a57cb | 866 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
867 | (const char *) str); |
868 | ret = -1; | |
869 | } | |
870 | end: | |
871 | return ret; | |
872 | } | |
873 | ||
874 | static | |
875 | int get_domain_type(xmlChar *domain) | |
876 | { | |
877 | int ret; | |
878 | ||
879 | if (!domain) { | |
880 | goto error; | |
881 | } | |
882 | ||
883 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
884 | ret = LTTNG_DOMAIN_KERNEL; | |
885 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
886 | ret = LTTNG_DOMAIN_UST; | |
887 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
888 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
889 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
890 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
891 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
892 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
893 | } else { |
894 | goto error; | |
895 | } | |
896 | ||
897 | return ret; | |
898 | error: | |
899 | return -1; | |
900 | } | |
901 | ||
902 | static | |
903 | int get_buffer_type(xmlChar *buffer_type) | |
904 | { | |
905 | int ret; | |
906 | ||
907 | if (!buffer_type) { | |
908 | goto error; | |
909 | } | |
910 | ||
911 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
912 | ret = LTTNG_BUFFER_GLOBAL; | |
913 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
914 | ret = LTTNG_BUFFER_PER_UID; | |
915 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
916 | ret = LTTNG_BUFFER_PER_PID; | |
917 | } else { | |
918 | goto error; | |
919 | } | |
920 | ||
921 | return ret; | |
922 | error: | |
923 | return -1; | |
924 | } | |
925 | ||
926 | static | |
927 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
928 | { | |
929 | int ret; | |
930 | ||
931 | if (!overwrite_mode) { | |
932 | goto error; | |
933 | } | |
934 | ||
935 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
936 | ret = 1; | |
937 | } else if (!strcmp((char *) overwrite_mode, | |
938 | config_overwrite_mode_discard)) { | |
939 | ret = 0; | |
940 | } else { | |
941 | goto error; | |
942 | } | |
943 | ||
944 | return ret; | |
945 | error: | |
946 | return -1; | |
947 | } | |
948 | ||
949 | static | |
950 | int get_output_type(xmlChar *output_type) | |
951 | { | |
952 | int ret; | |
953 | ||
954 | if (!output_type) { | |
955 | goto error; | |
956 | } | |
957 | ||
958 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
959 | ret = LTTNG_EVENT_MMAP; | |
960 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
961 | ret = LTTNG_EVENT_SPLICE; | |
962 | } else { | |
963 | goto error; | |
964 | } | |
965 | ||
966 | return ret; | |
967 | error: | |
968 | return -1; | |
969 | } | |
970 | ||
971 | static | |
972 | int get_event_type(xmlChar *event_type) | |
973 | { | |
974 | int ret; | |
975 | ||
976 | if (!event_type) { | |
977 | goto error; | |
978 | } | |
979 | ||
980 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
981 | ret = LTTNG_EVENT_ALL; | |
982 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
983 | ret = LTTNG_EVENT_TRACEPOINT; | |
984 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
985 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
986 | } else if (!strcmp((char *) event_type, |
987 | config_event_type_userspace_probe)) { | |
988 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
989 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
990 | ret = LTTNG_EVENT_FUNCTION; | |
991 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 992 | config_event_type_function_entry)) { |
dcf266c0 JG |
993 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
994 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
995 | ret = LTTNG_EVENT_NOOP; | |
996 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
997 | ret = LTTNG_EVENT_SYSCALL; | |
998 | } else { | |
999 | goto error; | |
1000 | } | |
1001 | ||
1002 | return ret; | |
1003 | error: | |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | static | |
1008 | int get_loglevel_type(xmlChar *loglevel_type) | |
1009 | { | |
1010 | int ret; | |
1011 | ||
1012 | if (!loglevel_type) { | |
1013 | goto error; | |
1014 | } | |
1015 | ||
1016 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1017 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1018 | } else if (!strcmp((char *) loglevel_type, | |
1019 | config_loglevel_type_range)) { | |
1020 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1021 | } else if (!strcmp((char *) loglevel_type, | |
1022 | config_loglevel_type_single)) { | |
1023 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1024 | } else { | |
1025 | goto error; | |
1026 | } | |
1027 | ||
1028 | return ret; | |
1029 | error: | |
1030 | return -1; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Return the context type or -1 on error. | |
1035 | */ | |
1036 | static | |
1037 | int get_context_type(xmlChar *context_type) | |
1038 | { | |
1039 | int ret; | |
1040 | ||
1041 | if (!context_type) { | |
1042 | goto error; | |
1043 | } | |
1044 | ||
1045 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1046 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1047 | } else if (!strcmp((char *) context_type, | |
1048 | config_event_context_procname)) { | |
1049 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1050 | } else if (!strcmp((char *) context_type, | |
1051 | config_event_context_prio)) { | |
1052 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1053 | } else if (!strcmp((char *) context_type, | |
1054 | config_event_context_nice)) { | |
1055 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1056 | } else if (!strcmp((char *) context_type, | |
1057 | config_event_context_vpid)) { | |
1058 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1059 | } else if (!strcmp((char *) context_type, | |
1060 | config_event_context_tid)) { | |
1061 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1062 | } else if (!strcmp((char *) context_type, | |
1063 | config_event_context_vtid)) { | |
1064 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1065 | } else if (!strcmp((char *) context_type, | |
1066 | config_event_context_ppid)) { | |
1067 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1068 | } else if (!strcmp((char *) context_type, | |
1069 | config_event_context_vppid)) { | |
1070 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1071 | } else if (!strcmp((char *) context_type, | |
1072 | config_event_context_pthread_id)) { | |
1073 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1074 | } else if (!strcmp((char *) context_type, | |
1075 | config_event_context_hostname)) { | |
1076 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1077 | } else if (!strcmp((char *) context_type, | |
1078 | config_event_context_ip)) { | |
1079 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1080 | } else if (!strcmp((char *) context_type, |
1081 | config_event_context_interruptible)) { | |
1082 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1083 | } else if (!strcmp((char *) context_type, | |
1084 | config_event_context_preemptible)) { | |
1085 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1086 | } else if (!strcmp((char *) context_type, | |
1087 | config_event_context_need_reschedule)) { | |
1088 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1089 | } else if (!strcmp((char *) context_type, | |
1090 | config_event_context_migratable)) { | |
1091 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1092 | } else if (!strcmp((char *) context_type, |
1093 | config_event_context_callstack_user)) { | |
1094 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1095 | } else if (!strcmp((char *) context_type, | |
1096 | config_event_context_callstack_kernel)) { | |
1097 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1098 | } else if (!strcmp((char *) context_type, |
1099 | config_event_context_cgroup_ns)) { | |
1100 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1101 | } else if (!strcmp((char *) context_type, | |
1102 | config_event_context_ipc_ns)) { | |
1103 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1104 | } else if (!strcmp((char *) context_type, | |
1105 | config_event_context_mnt_ns)) { | |
1106 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1107 | } else if (!strcmp((char *) context_type, | |
1108 | config_event_context_net_ns)) { | |
1109 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1110 | } else if (!strcmp((char *) context_type, | |
1111 | config_event_context_pid_ns)) { | |
1112 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
1113 | } else if (!strcmp((char *) context_type, |
1114 | config_event_context_time_ns)) { | |
1115 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
1116 | } else if (!strcmp((char *) context_type, |
1117 | config_event_context_user_ns)) { | |
1118 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1119 | } else if (!strcmp((char *) context_type, | |
1120 | config_event_context_uts_ns)) { | |
1121 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1122 | } else if (!strcmp((char *) context_type, |
1123 | config_event_context_uid)) { | |
1124 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1125 | } else if (!strcmp((char *) context_type, | |
1126 | config_event_context_euid)) { | |
1127 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1128 | } else if (!strcmp((char *) context_type, | |
1129 | config_event_context_suid)) { | |
1130 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1131 | } else if (!strcmp((char *) context_type, | |
1132 | config_event_context_gid)) { | |
1133 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1134 | } else if (!strcmp((char *) context_type, | |
1135 | config_event_context_egid)) { | |
1136 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1137 | } else if (!strcmp((char *) context_type, | |
1138 | config_event_context_sgid)) { | |
1139 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1140 | } else if (!strcmp((char *) context_type, | |
1141 | config_event_context_vuid)) { | |
1142 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1143 | } else if (!strcmp((char *) context_type, | |
1144 | config_event_context_veuid)) { | |
1145 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1146 | } else if (!strcmp((char *) context_type, | |
1147 | config_event_context_vsuid)) { | |
1148 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1149 | } else if (!strcmp((char *) context_type, | |
1150 | config_event_context_vgid)) { | |
1151 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1152 | } else if (!strcmp((char *) context_type, | |
1153 | config_event_context_vegid)) { | |
1154 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1155 | } else if (!strcmp((char *) context_type, | |
1156 | config_event_context_vsgid)) { | |
1157 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1158 | } else { |
1159 | goto error; | |
1160 | } | |
1161 | ||
1162 | return ret; | |
1163 | error: | |
1164 | return -1; | |
1165 | } | |
1166 | ||
1167 | static | |
1168 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1169 | { | |
1170 | int ret; | |
1171 | xmlNodePtr node; | |
1172 | ||
1173 | for (node = xmlFirstElementChild(domain_node); node; | |
1174 | node = xmlNextElementSibling(node)) { | |
1175 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1176 | /* domain type */ | |
1177 | xmlChar *node_content = xmlNodeGetContent(node); | |
1178 | if (!node_content) { | |
1179 | ret = -LTTNG_ERR_NOMEM; | |
1180 | goto end; | |
1181 | } | |
1182 | ||
1183 | ret = get_domain_type(node_content); | |
1184 | free(node_content); | |
1185 | if (ret < 0) { | |
1186 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1187 | goto end; | |
1188 | } | |
1189 | ||
1190 | domain->type = ret; | |
1191 | } else if (!strcmp((const char *) node->name, | |
1192 | config_element_buffer_type)) { | |
1193 | /* buffer type */ | |
1194 | xmlChar *node_content = xmlNodeGetContent(node); | |
1195 | if (!node_content) { | |
1196 | ret = -LTTNG_ERR_NOMEM; | |
1197 | goto end; | |
1198 | } | |
1199 | ||
1200 | ret = get_buffer_type(node_content); | |
1201 | free(node_content); | |
1202 | if (ret < 0) { | |
1203 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1204 | goto end; | |
1205 | } | |
1206 | ||
1207 | domain->buf_type = ret; | |
1208 | } | |
1209 | } | |
1210 | ret = 0; | |
1211 | end: | |
1212 | return ret; | |
1213 | } | |
1214 | ||
1215 | static | |
1216 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1217 | char **data_uri) | |
1218 | { | |
1219 | xmlNodePtr node; | |
1220 | ||
1221 | for (node = xmlFirstElementChild(net_output_node); node; | |
1222 | node = xmlNextElementSibling(node)) { | |
1223 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1224 | /* control_uri */ | |
1225 | *control_uri = (char *) xmlNodeGetContent(node); | |
1226 | if (!*control_uri) { | |
1227 | break; | |
1228 | } | |
1229 | } else { | |
1230 | /* data_uri */ | |
1231 | *data_uri = (char *) xmlNodeGetContent(node); | |
1232 | if (!*data_uri) { | |
1233 | break; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1239 | } | |
1240 | ||
1241 | static | |
1242 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1243 | struct consumer_output *output) | |
1244 | { | |
1245 | int ret; | |
1246 | xmlNodePtr node; | |
1247 | ||
a0377dfe | 1248 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1249 | |
1250 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1251 | node = xmlNextElementSibling(node)) { | |
1252 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1253 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1254 | ||
1255 | /* enabled */ | |
1256 | if (!enabled_str) { | |
1257 | ret = -LTTNG_ERR_NOMEM; | |
1258 | goto end; | |
1259 | } | |
1260 | ||
1261 | ret = parse_bool(enabled_str, &output->enabled); | |
1262 | free(enabled_str); | |
1263 | if (ret) { | |
1264 | goto end; | |
1265 | } | |
1266 | } else { | |
1267 | xmlNodePtr output_type_node; | |
1268 | ||
1269 | /* destination */ | |
1270 | output_type_node = xmlFirstElementChild(node); | |
1271 | if (!output_type_node) { | |
1272 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1273 | goto end; | |
1274 | } | |
1275 | ||
1276 | if (!strcmp((const char *) output_type_node->name, | |
1277 | config_element_path)) { | |
1278 | /* path */ | |
1279 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1280 | if (!output->path) { | |
1281 | ret = -LTTNG_ERR_NOMEM; | |
1282 | goto end; | |
1283 | } | |
1284 | } else { | |
1285 | /* net_output */ | |
1286 | ret = get_net_output_uris(output_type_node, | |
1287 | &output->control_uri, &output->data_uri); | |
1288 | if (ret) { | |
1289 | goto end; | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | ret = 0; | |
1295 | ||
1296 | end: | |
1297 | if (ret) { | |
1298 | free(output->path); | |
1299 | free(output->control_uri); | |
1300 | free(output->data_uri); | |
1301 | memset(output, 0, sizeof(struct consumer_output)); | |
1302 | } | |
1303 | return ret; | |
1304 | } | |
1305 | ||
1306 | static | |
95681498 JG |
1307 | int create_session_net_output(const char *name, const char *control_uri, |
1308 | const char *data_uri) | |
dcf266c0 JG |
1309 | { |
1310 | int ret; | |
1311 | struct lttng_handle *handle; | |
1312 | const char *uri = NULL; | |
1313 | ||
a0377dfe | 1314 | LTTNG_ASSERT(name); |
dcf266c0 | 1315 | |
95681498 | 1316 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1317 | if (!handle) { |
1318 | ret = -LTTNG_ERR_NOMEM; | |
1319 | goto end; | |
1320 | } | |
1321 | ||
1322 | if (!control_uri || !data_uri) { | |
1323 | uri = control_uri ? control_uri : data_uri; | |
1324 | control_uri = uri; | |
1325 | data_uri = uri; | |
1326 | } | |
1327 | ||
1328 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1329 | lttng_destroy_handle(handle); | |
1330 | end: | |
1331 | return ret; | |
1332 | } | |
1333 | ||
1334 | static | |
1b08cbce JR |
1335 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1336 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1337 | { |
1338 | int ret; | |
1339 | xmlNodePtr node = NULL; | |
1340 | xmlNodePtr snapshot_output_list_node; | |
1341 | xmlNodePtr snapshot_output_node; | |
1342 | ||
a0377dfe | 1343 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
1344 | |
1345 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1346 | if (ret) { | |
1347 | goto end; | |
1348 | } | |
1349 | ||
1350 | if (!output_node) { | |
1351 | goto end; | |
1352 | } | |
1353 | ||
1354 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1355 | ||
1356 | /* Parse and create snapshot outputs */ | |
1357 | ||
1358 | for (snapshot_output_node = | |
1359 | xmlFirstElementChild(snapshot_output_list_node); | |
1360 | snapshot_output_node; snapshot_output_node = | |
1361 | xmlNextElementSibling(snapshot_output_node)) { | |
1362 | char *name = NULL; | |
1363 | uint64_t max_size = UINT64_MAX; | |
1364 | struct consumer_output output = { 0 }; | |
1365 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1366 | const char *control_uri = NULL; |
1367 | const char *data_uri = NULL; | |
1368 | const char *path = NULL; | |
dcf266c0 JG |
1369 | |
1370 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1371 | node = xmlNextElementSibling(node)) { | |
1372 | if (!strcmp((const char *) node->name, | |
1373 | config_element_name)) { | |
1374 | /* name */ | |
1375 | name = (char *) xmlNodeGetContent(node); | |
1376 | if (!name) { | |
1377 | ret = -LTTNG_ERR_NOMEM; | |
1378 | goto error_snapshot_output; | |
1379 | } | |
1380 | } else if (!strcmp((const char *) node->name, | |
1381 | config_element_max_size)) { | |
1382 | xmlChar *content = xmlNodeGetContent(node); | |
1383 | ||
1384 | /* max_size */ | |
1385 | if (!content) { | |
1386 | ret = -LTTNG_ERR_NOMEM; | |
1387 | goto error_snapshot_output; | |
1388 | } | |
1389 | ret = parse_uint(content, &max_size); | |
1390 | free(content); | |
1391 | if (ret) { | |
1392 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1393 | goto error_snapshot_output; | |
1394 | } | |
1395 | } else { | |
1396 | /* consumer_output */ | |
1397 | ret = process_consumer_output(node, &output); | |
1398 | if (ret) { | |
1399 | goto error_snapshot_output; | |
1400 | } | |
1401 | } | |
1402 | } | |
1403 | ||
21a3f144 JR |
1404 | control_uri = output.control_uri; |
1405 | data_uri = output.data_uri; | |
1406 | path = output.path; | |
1407 | ||
1b08cbce JR |
1408 | if (overrides) { |
1409 | if (overrides->path_url) { | |
1b08cbce | 1410 | path = overrides->path_url; |
21a3f144 JR |
1411 | /* Control/data_uri are null */ |
1412 | control_uri = NULL; | |
1413 | data_uri = NULL; | |
1b08cbce JR |
1414 | } else { |
1415 | if (overrides->ctrl_url) { | |
1b08cbce | 1416 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1417 | /* path is null */ |
1418 | path = NULL; | |
1b08cbce JR |
1419 | } |
1420 | if (overrides->data_url) { | |
1b08cbce | 1421 | data_uri = overrides->data_url; |
21a3f144 JR |
1422 | /* path is null */ |
1423 | path = NULL; | |
1b08cbce JR |
1424 | } |
1425 | } | |
1b08cbce JR |
1426 | } |
1427 | ||
dcf266c0 JG |
1428 | snapshot_output = lttng_snapshot_output_create(); |
1429 | if (!snapshot_output) { | |
1430 | ret = -LTTNG_ERR_NOMEM; | |
1431 | goto error_snapshot_output; | |
1432 | } | |
1433 | ||
1434 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1435 | if (ret) { | |
1436 | goto error_snapshot_output; | |
1437 | } | |
1438 | ||
1439 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1440 | if (ret) { | |
1441 | goto error_snapshot_output; | |
1442 | } | |
1443 | ||
1b08cbce JR |
1444 | if (path) { |
1445 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1446 | snapshot_output); |
1447 | if (ret) { | |
1448 | goto error_snapshot_output; | |
1449 | } | |
1450 | } else { | |
1b08cbce JR |
1451 | if (control_uri) { |
1452 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1453 | snapshot_output); |
1454 | if (ret) { | |
1455 | goto error_snapshot_output; | |
1456 | } | |
1457 | } | |
1458 | ||
1b08cbce JR |
1459 | if (data_uri) { |
1460 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1461 | snapshot_output); |
1462 | if (ret) { | |
1463 | goto error_snapshot_output; | |
1464 | } | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1469 | error_snapshot_output: | |
1470 | free(name); | |
1471 | free(output.path); | |
1472 | free(output.control_uri); | |
1473 | free(output.data_uri); | |
1474 | lttng_snapshot_output_destroy(snapshot_output); | |
1475 | if (ret) { | |
1476 | goto end; | |
1477 | } | |
1478 | } | |
1479 | end: | |
1480 | return ret; | |
1481 | } | |
1482 | ||
1483 | static | |
1484 | int create_session(const char *name, | |
dcf266c0 | 1485 | xmlNodePtr output_node, |
1b08cbce JR |
1486 | uint64_t live_timer_interval, |
1487 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1488 | { |
1489 | int ret; | |
1490 | struct consumer_output output = { 0 }; | |
1491 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1492 | const char *control_uri = NULL; |
1493 | const char *data_uri = NULL; | |
1494 | const char *path = NULL; | |
dcf266c0 | 1495 | |
a0377dfe | 1496 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1497 | |
1498 | if (output_node) { | |
1499 | consumer_output_node = xmlFirstElementChild(output_node); | |
1500 | if (!consumer_output_node) { | |
1501 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1502 | goto end; | |
1503 | } | |
1504 | ||
1505 | if (strcmp((const char *) consumer_output_node->name, | |
1506 | config_element_consumer_output)) { | |
1507 | WARN("Invalid output type, expected %s node", | |
1508 | config_element_consumer_output); | |
1509 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1510 | goto end; | |
1511 | } | |
1512 | ||
1513 | ret = process_consumer_output(consumer_output_node, &output); | |
1514 | if (ret) { | |
1515 | goto end; | |
1516 | } | |
1517 | } | |
1518 | ||
21a3f144 JR |
1519 | control_uri = output.control_uri; |
1520 | data_uri = output.data_uri; | |
1521 | path = output.path; | |
1522 | ||
1b08cbce JR |
1523 | /* Check for override and apply them */ |
1524 | if (overrides) { | |
1525 | if (overrides->path_url) { | |
1b08cbce | 1526 | path = overrides->path_url; |
21a3f144 JR |
1527 | /* control/data_uri are null */; |
1528 | control_uri = NULL; | |
1529 | data_uri = NULL; | |
1b08cbce JR |
1530 | } else { |
1531 | if (overrides->ctrl_url) { | |
1b08cbce | 1532 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1533 | /* path is null */ |
1534 | path = NULL; | |
1b08cbce JR |
1535 | } |
1536 | if (overrides->data_url) { | |
1b08cbce | 1537 | data_uri = overrides->data_url; |
21a3f144 JR |
1538 | /* path is null */ |
1539 | path = NULL; | |
1b08cbce JR |
1540 | } |
1541 | } | |
1b08cbce JR |
1542 | } |
1543 | ||
21a3f144 | 1544 | |
1b08cbce | 1545 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1546 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1547 | goto end; | |
1548 | } | |
1549 | ||
1b08cbce | 1550 | if (control_uri || data_uri) { |
dcf266c0 JG |
1551 | /* network destination */ |
1552 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1553 | /* |
1554 | * URLs are provided for sure since the test above make sure that | |
1555 | * with a live timer the data and control URIs are provided. So, | |
1556 | * NULL is passed here and will be set right after. | |
1557 | */ | |
1558 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1559 | } else { |
1560 | ret = lttng_create_session(name, NULL); | |
1561 | } | |
1562 | if (ret) { | |
1563 | goto end; | |
1564 | } | |
1565 | ||
1b08cbce | 1566 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1567 | if (ret) { |
1568 | goto end; | |
dcf266c0 | 1569 | } |
95681498 | 1570 | |
dcf266c0 JG |
1571 | } else { |
1572 | /* either local output or no output */ | |
1b08cbce | 1573 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1574 | if (ret) { |
1575 | goto end; | |
1576 | } | |
1577 | } | |
1578 | end: | |
1579 | free(output.path); | |
1580 | free(output.control_uri); | |
1581 | free(output.data_uri); | |
1582 | return ret; | |
1583 | } | |
c1e83fb4 FD |
1584 | |
1585 | static | |
1586 | struct lttng_userspace_probe_location * | |
1587 | process_userspace_probe_function_attribute_node( | |
1588 | xmlNodePtr attribute_node) | |
1589 | { | |
c1e83fb4 | 1590 | xmlNodePtr function_attribute_node; |
717d2dba | 1591 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1592 | struct lttng_userspace_probe_location *location = NULL; |
1593 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1594 | ||
1595 | /* | |
1596 | * Process userspace probe location function attributes. The order of | |
1597 | * the fields are not guaranteed so we need to iterate over all fields | |
1598 | * and check at the end if everything we need for this location type is | |
1599 | * there. | |
1600 | */ | |
1601 | for (function_attribute_node = | |
1602 | xmlFirstElementChild(attribute_node); | |
1603 | function_attribute_node; | |
1604 | function_attribute_node = xmlNextElementSibling( | |
1605 | function_attribute_node)) { | |
1606 | /* Handle function name, binary path and lookup method. */ | |
1607 | if (!strcmp((const char *) function_attribute_node->name, | |
1608 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1609 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1610 | if (!function_name) { |
c1e83fb4 FD |
1611 | goto error; |
1612 | } | |
1613 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1614 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1615 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1616 | if (!binary_path) { |
c1e83fb4 FD |
1617 | goto error; |
1618 | } | |
1619 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1620 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1621 | char *lookup_method_name; |
c1e83fb4 | 1622 | |
717d2dba JG |
1623 | lookup_method_name = (char *) xmlNodeGetContent( |
1624 | function_attribute_node); | |
c1e83fb4 | 1625 | if (!lookup_method_name) { |
c1e83fb4 FD |
1626 | goto error; |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * function_default lookup method defaults to | |
1631 | * function_elf lookup method at the moment. | |
1632 | */ | |
1633 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1634 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1635 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1636 | if (!lookup_method) { | |
1637 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1638 | } |
1639 | } else { | |
717d2dba JG |
1640 | WARN("Unknown function lookup method"); |
1641 | } | |
1642 | ||
1643 | free(lookup_method_name); | |
1644 | if (!lookup_method) { | |
c1e83fb4 FD |
1645 | goto error; |
1646 | } | |
1647 | } else { | |
1648 | goto error; | |
1649 | } | |
1650 | ||
1651 | /* Check if all the necessary fields were found. */ | |
1652 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1653 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1654 | location = |
1655 | lttng_userspace_probe_location_function_create( | |
1656 | binary_path, function_name, | |
1657 | lookup_method); | |
717d2dba JG |
1658 | lookup_method = NULL; |
1659 | goto error; | |
c1e83fb4 FD |
1660 | } |
1661 | } | |
1662 | error: | |
717d2dba | 1663 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1664 | free(binary_path); |
1665 | free(function_name); | |
c1e83fb4 FD |
1666 | return location; |
1667 | } | |
1668 | ||
1669 | static | |
1670 | struct lttng_userspace_probe_location * | |
1671 | process_userspace_probe_tracepoint_attribute_node( | |
1672 | xmlNodePtr attribute_node) | |
1673 | { | |
c1e83fb4 | 1674 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1675 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1676 | struct lttng_userspace_probe_location *location = NULL; | |
1677 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1678 | ||
1679 | /* | |
1680 | * Process userspace probe location tracepoint attributes. The order of | |
1681 | * the fields are not guaranteed so we need to iterate over all fields | |
1682 | * and check at the end if everything we need for this location type is | |
1683 | * there. | |
1684 | */ | |
1685 | for (tracepoint_attribute_node = | |
1686 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1687 | tracepoint_attribute_node = xmlNextElementSibling( | |
1688 | tracepoint_attribute_node)) { | |
1689 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1690 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1691 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1692 | if (!probe_name) { |
c1e83fb4 FD |
1693 | goto error; |
1694 | } | |
1695 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1696 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1697 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1698 | if (!provider_name) { |
c1e83fb4 FD |
1699 | goto error; |
1700 | } | |
1701 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1702 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1703 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1704 | if (!binary_path) { |
c1e83fb4 FD |
1705 | goto error; |
1706 | } | |
1707 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1708 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1709 | char *lookup_method_name; |
c1e83fb4 | 1710 | |
717d2dba JG |
1711 | lookup_method_name = (char *) xmlNodeGetContent( |
1712 | tracepoint_attribute_node); | |
c1e83fb4 | 1713 | if (!lookup_method_name) { |
c1e83fb4 FD |
1714 | goto error; |
1715 | } | |
1716 | ||
1717 | if (!strcmp(lookup_method_name, | |
1718 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1719 | lookup_method = | |
1720 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1721 | if (!lookup_method) { | |
1722 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1723 | } |
1724 | } else { | |
717d2dba JG |
1725 | WARN("Unknown tracepoint lookup method"); |
1726 | } | |
1727 | ||
1728 | free(lookup_method_name); | |
1729 | if (!lookup_method) { | |
c1e83fb4 FD |
1730 | goto error; |
1731 | } | |
1732 | } else { | |
717d2dba | 1733 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1734 | goto error; |
1735 | } | |
1736 | ||
1737 | /* Check if all the necessary fields were found. */ | |
1738 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1739 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1740 | location = |
1741 | lttng_userspace_probe_location_tracepoint_create( | |
1742 | binary_path, provider_name, | |
1743 | probe_name, lookup_method); | |
6bd61b96 | 1744 | lookup_method = NULL; |
717d2dba | 1745 | goto error; |
c1e83fb4 FD |
1746 | } |
1747 | } | |
1748 | error: | |
717d2dba | 1749 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1750 | free(binary_path); |
c1e83fb4 | 1751 | free(provider_name); |
717d2dba | 1752 | free(probe_name); |
c1e83fb4 FD |
1753 | return location; |
1754 | } | |
1755 | ||
dcf266c0 JG |
1756 | static |
1757 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1758 | struct lttng_event_probe_attr *attr) | |
1759 | { | |
1760 | int ret; | |
1761 | ||
a0377dfe FD |
1762 | LTTNG_ASSERT(probe_attribute_node); |
1763 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1764 | |
1765 | if (!strcmp((const char *) probe_attribute_node->name, | |
1766 | config_element_address)) { | |
1767 | xmlChar *content; | |
1768 | uint64_t addr = 0; | |
1769 | ||
1770 | /* addr */ | |
1771 | content = xmlNodeGetContent(probe_attribute_node); | |
1772 | if (!content) { | |
1773 | ret = -LTTNG_ERR_NOMEM; | |
1774 | goto end; | |
1775 | } | |
1776 | ||
1777 | ret = parse_uint(content, &addr); | |
1778 | free(content); | |
1779 | if (ret) { | |
1780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1781 | goto end; | |
1782 | } | |
1783 | ||
1784 | attr->addr = addr; | |
1785 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1786 | config_element_offset)) { | |
1787 | xmlChar *content; | |
1788 | uint64_t offset = 0; | |
1789 | ||
1790 | /* offset */ | |
1791 | content = xmlNodeGetContent(probe_attribute_node); | |
1792 | if (!content) { | |
1793 | ret = -LTTNG_ERR_NOMEM; | |
1794 | goto end; | |
1795 | } | |
1796 | ||
1797 | ret = parse_uint(content, &offset); | |
1798 | free(content); | |
1799 | if (ret) { | |
1800 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1801 | goto end; | |
1802 | } | |
1803 | ||
1804 | attr->offset = offset; | |
1805 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1806 | config_element_symbol_name)) { | |
1807 | xmlChar *content; | |
dcf266c0 JG |
1808 | |
1809 | /* symbol_name */ | |
1810 | content = xmlNodeGetContent(probe_attribute_node); | |
1811 | if (!content) { | |
1812 | ret = -LTTNG_ERR_NOMEM; | |
1813 | goto end; | |
1814 | } | |
1815 | ||
d2e67842 JG |
1816 | ret = lttng_strncpy(attr->symbol_name, |
1817 | (const char *) content, | |
1818 | LTTNG_SYMBOL_NAME_LEN); | |
1819 | if (ret == -1) { | |
1820 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1821 | (const char *) content, | |
1822 | strlen((const char *) content), | |
1823 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1824 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1825 | free(content); | |
1826 | goto end; | |
1827 | } | |
dcf266c0 JG |
1828 | free(content); |
1829 | } | |
1830 | ret = 0; | |
1831 | end: | |
1832 | return ret; | |
1833 | } | |
1834 | ||
1835 | static | |
1836 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1837 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1838 | { |
d7b645e2 | 1839 | int ret = 0, i; |
dcf266c0 | 1840 | xmlNodePtr node; |
91744e14 | 1841 | struct lttng_event *event; |
dcf266c0 JG |
1842 | char **exclusions = NULL; |
1843 | unsigned long exclusion_count = 0; | |
1844 | char *filter_expression = NULL; | |
1845 | ||
a0377dfe FD |
1846 | LTTNG_ASSERT(event_node); |
1847 | LTTNG_ASSERT(handle); | |
1848 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1849 | |
91744e14 FD |
1850 | event = lttng_event_create(); |
1851 | if (!event) { | |
1852 | ret = -LTTNG_ERR_NOMEM; | |
1853 | goto end; | |
1854 | } | |
dcf266c0 | 1855 | |
f40eba3d JG |
1856 | /* Initialize default log level which varies by domain */ |
1857 | switch (handle->domain.type) | |
1858 | { | |
1859 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1860 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1861 | break; |
1862 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1863 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1864 | break; |
1865 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1866 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1867 | break; |
1868 | case LTTNG_DOMAIN_UST: | |
1869 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1870 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1871 | break; |
1872 | default: | |
a0377dfe | 1873 | abort(); |
f40eba3d JG |
1874 | } |
1875 | ||
dcf266c0 JG |
1876 | for (node = xmlFirstElementChild(event_node); node; |
1877 | node = xmlNextElementSibling(node)) { | |
1878 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1879 | xmlChar *content; | |
dcf266c0 JG |
1880 | |
1881 | /* name */ | |
1882 | content = xmlNodeGetContent(node); | |
1883 | if (!content) { | |
1884 | ret = -LTTNG_ERR_NOMEM; | |
1885 | goto end; | |
1886 | } | |
1887 | ||
91744e14 | 1888 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1889 | (const char *) content, |
1890 | LTTNG_SYMBOL_NAME_LEN); | |
1891 | if (ret == -1) { | |
1892 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1893 | (const char *) content, | |
1894 | strlen((const char *) content), | |
1895 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1896 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1897 | free(content); | |
1898 | goto end; | |
1899 | } | |
dcf266c0 JG |
1900 | free(content); |
1901 | } else if (!strcmp((const char *) node->name, | |
1902 | config_element_enabled)) { | |
1903 | xmlChar *content = xmlNodeGetContent(node); | |
1904 | ||
1905 | /* enabled */ | |
1906 | if (!content) { | |
1907 | ret = -LTTNG_ERR_NOMEM; | |
1908 | goto end; | |
1909 | } | |
1910 | ||
91744e14 | 1911 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1912 | free(content); |
1913 | if (ret) { | |
1914 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1915 | goto end; | |
1916 | } | |
1917 | } else if (!strcmp((const char *) node->name, | |
1918 | config_element_type)) { | |
1919 | xmlChar *content = xmlNodeGetContent(node); | |
1920 | ||
1921 | /* type */ | |
1922 | if (!content) { | |
1923 | ret = -LTTNG_ERR_NOMEM; | |
1924 | goto end; | |
1925 | } | |
1926 | ||
1927 | ret = get_event_type(content); | |
1928 | free(content); | |
1929 | if (ret < 0) { | |
1930 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1931 | goto end; | |
1932 | } | |
1933 | ||
91744e14 | 1934 | event->type = ret; |
dcf266c0 JG |
1935 | } else if (!strcmp((const char *) node->name, |
1936 | config_element_loglevel_type)) { | |
1937 | xmlChar *content = xmlNodeGetContent(node); | |
1938 | ||
1939 | /* loglevel_type */ | |
1940 | if (!content) { | |
1941 | ret = -LTTNG_ERR_NOMEM; | |
1942 | goto end; | |
1943 | } | |
1944 | ||
1945 | ret = get_loglevel_type(content); | |
1946 | free(content); | |
1947 | if (ret < 0) { | |
1948 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1949 | goto end; | |
1950 | } | |
1951 | ||
91744e14 | 1952 | event->loglevel_type = ret; |
dcf266c0 JG |
1953 | } else if (!strcmp((const char *) node->name, |
1954 | config_element_loglevel)) { | |
1955 | xmlChar *content; | |
1956 | int64_t loglevel = 0; | |
1957 | ||
1958 | /* loglevel */ | |
1959 | content = xmlNodeGetContent(node); | |
1960 | if (!content) { | |
1961 | ret = -LTTNG_ERR_NOMEM; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
1965 | ret = parse_int(content, &loglevel); | |
1966 | free(content); | |
1967 | if (ret) { | |
1968 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1969 | goto end; | |
1970 | } | |
1971 | ||
1972 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1973 | WARN("loglevel out of range."); | |
1974 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1975 | goto end; | |
1976 | } | |
1977 | ||
91744e14 | 1978 | event->loglevel = loglevel; |
dcf266c0 JG |
1979 | } else if (!strcmp((const char *) node->name, |
1980 | config_element_filter)) { | |
1981 | xmlChar *content = | |
1982 | xmlNodeGetContent(node); | |
1983 | ||
1984 | /* filter */ | |
1985 | if (!content) { | |
1986 | ret = -LTTNG_ERR_NOMEM; | |
1987 | goto end; | |
1988 | } | |
1989 | ||
02d8ac3d | 1990 | free(filter_expression); |
dcf266c0 JG |
1991 | filter_expression = strdup((char *) content); |
1992 | free(content); | |
1993 | if (!filter_expression) { | |
1994 | ret = -LTTNG_ERR_NOMEM; | |
1995 | goto end; | |
1996 | } | |
1997 | } else if (!strcmp((const char *) node->name, | |
1998 | config_element_exclusions)) { | |
1999 | xmlNodePtr exclusion_node; | |
2000 | int exclusion_index = 0; | |
2001 | ||
2002 | /* exclusions */ | |
2003 | if (exclusions) { | |
2004 | /* | |
2005 | * Exclusions has already been initialized, | |
2006 | * invalid file. | |
2007 | */ | |
2008 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2009 | goto end; | |
2010 | } | |
2011 | ||
2012 | exclusion_count = xmlChildElementCount(node); | |
2013 | if (!exclusion_count) { | |
2014 | continue; | |
2015 | } | |
2016 | ||
2017 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
2018 | if (!exclusions) { | |
2019 | exclusion_count = 0; | |
2020 | ret = -LTTNG_ERR_NOMEM; | |
2021 | goto end; | |
2022 | } | |
2023 | ||
2024 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2025 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2026 | xmlChar *content = | |
2027 | xmlNodeGetContent(exclusion_node); | |
2028 | ||
2029 | if (!content) { | |
2030 | ret = -LTTNG_ERR_NOMEM; | |
2031 | goto end; | |
2032 | } | |
2033 | ||
2034 | exclusions[exclusion_index] = strdup((const char *) content); | |
2035 | free(content); | |
2036 | if (!exclusions[exclusion_index]) { | |
2037 | ret = -LTTNG_ERR_NOMEM; | |
2038 | goto end; | |
2039 | } | |
2040 | exclusion_index++; | |
2041 | } | |
2042 | ||
91744e14 | 2043 | event->exclusion = 1; |
dcf266c0 JG |
2044 | } else if (!strcmp((const char *) node->name, |
2045 | config_element_attributes)) { | |
2046 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2047 | ||
2048 | /* attributes */ | |
2049 | if (!attribute_node) { | |
2050 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2051 | goto end; | |
2052 | } | |
2053 | ||
c1e83fb4 | 2054 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2055 | config_element_probe_attributes)) { |
2056 | xmlNodePtr probe_attribute_node; | |
2057 | ||
2058 | /* probe_attributes */ | |
2059 | for (probe_attribute_node = | |
2060 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2061 | probe_attribute_node = xmlNextElementSibling( | |
2062 | probe_attribute_node)) { | |
2063 | ||
2064 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2065 | &event->attr.probe); |
dcf266c0 JG |
2066 | if (ret) { |
2067 | goto end; | |
2068 | } | |
2069 | } | |
c1e83fb4 FD |
2070 | } else if (!strcmp((const char *) attribute_node->name, |
2071 | config_element_function_attributes)) { | |
dcf266c0 JG |
2072 | size_t sym_len; |
2073 | xmlChar *content; | |
2074 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2075 | ||
2076 | /* function_attributes */ | |
2077 | content = xmlNodeGetContent(symbol_node); | |
2078 | if (!content) { | |
2079 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2080 | goto end; | |
2081 | } | |
2082 | ||
2083 | sym_len = strlen((char *) content); | |
2084 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2085 | WARN("Function name too long."); | |
2086 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2087 | free(content); | |
2088 | goto end; | |
2089 | } | |
2090 | ||
d2e67842 | 2091 | ret = lttng_strncpy( |
91744e14 | 2092 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2093 | (char *) content, sym_len); |
2094 | if (ret == -1) { | |
2095 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2096 | free(content); | |
2097 | goto end; | |
2098 | } | |
dcf266c0 | 2099 | free(content); |
c1e83fb4 FD |
2100 | } else if (!strcmp((const char *) attribute_node->name, |
2101 | config_element_userspace_probe_tracepoint_attributes)) { | |
2102 | struct lttng_userspace_probe_location *location; | |
2103 | ||
2104 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2105 | if (!location) { | |
2106 | WARN("Error processing userspace probe tracepoint attribute"); | |
2107 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2108 | goto end; | |
2109 | } | |
2110 | ret = lttng_event_set_userspace_probe_location( | |
2111 | event, location); | |
2112 | if (ret) { | |
2113 | WARN("Error setting userspace probe location field"); | |
2114 | lttng_userspace_probe_location_destroy( | |
2115 | location); | |
2116 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2117 | goto end; | |
2118 | } | |
2119 | } else if (!strcmp((const char *) attribute_node->name, | |
2120 | config_element_userspace_probe_function_attributes)) { | |
2121 | struct lttng_userspace_probe_location *location; | |
2122 | ||
2123 | location = | |
2124 | process_userspace_probe_function_attribute_node( | |
2125 | attribute_node); | |
2126 | if (!location) { | |
2127 | WARN("Error processing userspace probe function attribute"); | |
2128 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2129 | goto end; | |
2130 | } | |
2131 | ||
2132 | ret = lttng_event_set_userspace_probe_location( | |
2133 | event, location); | |
2134 | if (ret) { | |
2135 | WARN("Error setting userspace probe location field"); | |
2136 | lttng_userspace_probe_location_destroy( | |
2137 | location); | |
2138 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2139 | goto end; | |
2140 | } | |
2141 | } else { | |
2142 | /* Unknown event attribute. */ | |
2143 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2144 | goto end; | |
dcf266c0 JG |
2145 | } |
2146 | } | |
2147 | } | |
2148 | ||
91744e14 FD |
2149 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2150 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2151 | filter_expression, exclusion_count, exclusions); |
2152 | if (ret < 0) { | |
91744e14 | 2153 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2154 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2155 | goto end; | |
2156 | } | |
065321e9 | 2157 | } |
d2e67842 | 2158 | ret = 0; |
dcf266c0 JG |
2159 | end: |
2160 | for (i = 0; i < exclusion_count; i++) { | |
2161 | free(exclusions[i]); | |
2162 | } | |
2163 | ||
b33f872b | 2164 | lttng_event_destroy(event); |
dcf266c0 JG |
2165 | free(exclusions); |
2166 | free(filter_expression); | |
2167 | return ret; | |
2168 | } | |
2169 | ||
2170 | static | |
2171 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2172 | const char *channel_name) | |
2173 | { | |
2174 | int ret = 0; | |
d7b645e2 | 2175 | struct lttng_event event; |
dcf266c0 JG |
2176 | xmlNodePtr node; |
2177 | ||
a0377dfe FD |
2178 | LTTNG_ASSERT(events_node); |
2179 | LTTNG_ASSERT(handle); | |
2180 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2181 | |
2182 | for (node = xmlFirstElementChild(events_node); node; | |
2183 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2184 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2185 | if (ret) { |
2186 | goto end; | |
2187 | } | |
2188 | } | |
d7b645e2 JR |
2189 | |
2190 | /* | |
2191 | * Disable all events to enable only the necessary events. | |
2192 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2193 | * force this approach. | |
2194 | */ | |
2195 | memset(&event, 0, sizeof(event)); | |
2196 | event.loglevel = -1; | |
2197 | event.type = LTTNG_EVENT_ALL; | |
2198 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2199 | if (ret) { | |
2200 | goto end; | |
2201 | } | |
2202 | ||
2203 | for (node = xmlFirstElementChild(events_node); node; | |
2204 | node = xmlNextElementSibling(node)) { | |
2205 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2206 | if (ret) { | |
2207 | goto end; | |
2208 | } | |
2209 | } | |
2210 | ||
dcf266c0 JG |
2211 | end: |
2212 | return ret; | |
2213 | } | |
2214 | ||
2215 | static | |
2216 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2217 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2218 | xmlNodePtr *events_node) | |
2219 | { | |
2220 | int ret; | |
2221 | ||
a0377dfe FD |
2222 | LTTNG_ASSERT(attr_node); |
2223 | LTTNG_ASSERT(channel); | |
2224 | LTTNG_ASSERT(contexts_node); | |
2225 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2226 | |
2227 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2228 | xmlChar *content; | |
dcf266c0 JG |
2229 | |
2230 | /* name */ | |
2231 | content = xmlNodeGetContent(attr_node); | |
2232 | if (!content) { | |
2233 | ret = -LTTNG_ERR_NOMEM; | |
2234 | goto end; | |
2235 | } | |
2236 | ||
d2e67842 JG |
2237 | ret = lttng_strncpy(channel->name, |
2238 | (const char *) content, | |
2239 | LTTNG_SYMBOL_NAME_LEN); | |
2240 | if (ret == -1) { | |
2241 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2242 | (const char *) content, | |
2243 | strlen((const char *) content), | |
2244 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2245 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2246 | free(content); | |
2247 | goto end; | |
2248 | } | |
dcf266c0 JG |
2249 | free(content); |
2250 | } else if (!strcmp((const char *) attr_node->name, | |
2251 | config_element_enabled)) { | |
2252 | xmlChar *content; | |
2253 | int enabled; | |
2254 | ||
2255 | /* enabled */ | |
2256 | content = xmlNodeGetContent(attr_node); | |
2257 | if (!content) { | |
2258 | ret = -LTTNG_ERR_NOMEM; | |
2259 | goto end; | |
2260 | } | |
2261 | ||
2262 | ret = parse_bool(content, &enabled); | |
2263 | free(content); | |
2264 | if (ret) { | |
2265 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2266 | goto end; | |
2267 | } | |
2268 | ||
2269 | channel->enabled = enabled; | |
2270 | } else if (!strcmp((const char *) attr_node->name, | |
2271 | config_element_overwrite_mode)) { | |
2272 | xmlChar *content; | |
2273 | ||
2274 | /* overwrite_mode */ | |
2275 | content = xmlNodeGetContent(attr_node); | |
2276 | if (!content) { | |
2277 | ret = -LTTNG_ERR_NOMEM; | |
2278 | goto end; | |
2279 | } | |
2280 | ||
2281 | ret = get_overwrite_mode(content); | |
2282 | free(content); | |
2283 | if (ret < 0) { | |
2284 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2285 | goto end; | |
2286 | } | |
2287 | ||
2288 | channel->attr.overwrite = ret; | |
2289 | } else if (!strcmp((const char *) attr_node->name, | |
2290 | config_element_subbuf_size)) { | |
2291 | xmlChar *content; | |
2292 | ||
2293 | /* subbuffer_size */ | |
2294 | content = xmlNodeGetContent(attr_node); | |
2295 | if (!content) { | |
2296 | ret = -LTTNG_ERR_NOMEM; | |
2297 | goto end; | |
2298 | } | |
2299 | ||
2300 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2301 | free(content); | |
2302 | if (ret) { | |
2303 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2304 | goto end; | |
2305 | } | |
2306 | } else if (!strcmp((const char *) attr_node->name, | |
2307 | config_element_num_subbuf)) { | |
2308 | xmlChar *content; | |
2309 | ||
2310 | /* subbuffer_count */ | |
2311 | content = xmlNodeGetContent(attr_node); | |
2312 | if (!content) { | |
2313 | ret = -LTTNG_ERR_NOMEM; | |
2314 | goto end; | |
2315 | } | |
2316 | ||
2317 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2318 | free(content); | |
2319 | if (ret) { | |
2320 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2321 | goto end; | |
2322 | } | |
2323 | } else if (!strcmp((const char *) attr_node->name, | |
2324 | config_element_switch_timer_interval)) { | |
2325 | xmlChar *content; | |
2326 | uint64_t switch_timer_interval = 0; | |
2327 | ||
2328 | /* switch_timer_interval */ | |
2329 | content = xmlNodeGetContent(attr_node); | |
2330 | if (!content) { | |
2331 | ret = -LTTNG_ERR_NOMEM; | |
2332 | goto end; | |
2333 | } | |
2334 | ||
2335 | ret = parse_uint(content, &switch_timer_interval); | |
2336 | free(content); | |
2337 | if (ret) { | |
2338 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2339 | goto end; | |
2340 | } | |
2341 | ||
2342 | if (switch_timer_interval > UINT_MAX) { | |
2343 | WARN("switch_timer_interval out of range."); | |
2344 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2345 | goto end; | |
2346 | } | |
2347 | ||
2348 | channel->attr.switch_timer_interval = | |
2349 | switch_timer_interval; | |
2350 | } else if (!strcmp((const char *) attr_node->name, | |
2351 | config_element_read_timer_interval)) { | |
2352 | xmlChar *content; | |
2353 | uint64_t read_timer_interval = 0; | |
2354 | ||
2355 | /* read_timer_interval */ | |
2356 | content = xmlNodeGetContent(attr_node); | |
2357 | if (!content) { | |
2358 | ret = -LTTNG_ERR_NOMEM; | |
2359 | goto end; | |
2360 | } | |
2361 | ||
2362 | ret = parse_uint(content, &read_timer_interval); | |
2363 | free(content); | |
2364 | if (ret) { | |
2365 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2366 | goto end; | |
2367 | } | |
2368 | ||
2369 | if (read_timer_interval > UINT_MAX) { | |
2370 | WARN("read_timer_interval out of range."); | |
2371 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2372 | goto end; | |
2373 | } | |
2374 | ||
2375 | channel->attr.read_timer_interval = | |
2376 | read_timer_interval; | |
2377 | } else if (!strcmp((const char *) attr_node->name, | |
2378 | config_element_output_type)) { | |
2379 | xmlChar *content; | |
2380 | ||
2381 | /* output_type */ | |
2382 | content = xmlNodeGetContent(attr_node); | |
2383 | if (!content) { | |
2384 | ret = -LTTNG_ERR_NOMEM; | |
2385 | goto end; | |
2386 | } | |
2387 | ||
2388 | ret = get_output_type(content); | |
2389 | free(content); | |
2390 | if (ret < 0) { | |
2391 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2392 | goto end; | |
2393 | } | |
2394 | ||
2395 | channel->attr.output = ret; | |
2396 | } else if (!strcmp((const char *) attr_node->name, | |
2397 | config_element_tracefile_size)) { | |
2398 | xmlChar *content; | |
2399 | ||
2400 | /* tracefile_size */ | |
2401 | content = xmlNodeGetContent(attr_node); | |
2402 | if (!content) { | |
2403 | ret = -LTTNG_ERR_NOMEM; | |
2404 | goto end; | |
2405 | } | |
2406 | ||
2407 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2408 | free(content); | |
2409 | if (ret) { | |
2410 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2411 | goto end; | |
2412 | } | |
2413 | } else if (!strcmp((const char *) attr_node->name, | |
2414 | config_element_tracefile_count)) { | |
2415 | xmlChar *content; | |
2416 | ||
2417 | /* tracefile_count */ | |
2418 | content = xmlNodeGetContent(attr_node); | |
2419 | if (!content) { | |
2420 | ret = -LTTNG_ERR_NOMEM; | |
2421 | goto end; | |
2422 | } | |
2423 | ||
2424 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2425 | free(content); | |
2426 | if (ret) { | |
2427 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2428 | goto end; | |
2429 | } | |
2430 | } else if (!strcmp((const char *) attr_node->name, | |
2431 | config_element_live_timer_interval)) { | |
2432 | xmlChar *content; | |
2433 | uint64_t live_timer_interval = 0; | |
2434 | ||
2435 | /* live_timer_interval */ | |
2436 | content = xmlNodeGetContent(attr_node); | |
2437 | if (!content) { | |
2438 | ret = -LTTNG_ERR_NOMEM; | |
2439 | goto end; | |
2440 | } | |
2441 | ||
2442 | ret = parse_uint(content, &live_timer_interval); | |
2443 | free(content); | |
2444 | if (ret) { | |
2445 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2446 | goto end; | |
2447 | } | |
2448 | ||
2449 | if (live_timer_interval > UINT_MAX) { | |
2450 | WARN("live_timer_interval out of range."); | |
2451 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2452 | goto end; | |
2453 | } | |
2454 | ||
2455 | channel->attr.live_timer_interval = | |
2456 | live_timer_interval; | |
4fc2b126 JR |
2457 | } else if (!strcmp((const char *) attr_node->name, |
2458 | config_element_monitor_timer_interval)) { | |
2459 | xmlChar *content; | |
2460 | uint64_t monitor_timer_interval = 0; | |
2461 | ||
2462 | /* monitor_timer_interval */ | |
2463 | content = xmlNodeGetContent(attr_node); | |
2464 | if (!content) { | |
2465 | ret = -LTTNG_ERR_NOMEM; | |
2466 | goto end; | |
2467 | } | |
2468 | ||
2469 | ret = parse_uint(content, &monitor_timer_interval); | |
2470 | free(content); | |
2471 | if (ret) { | |
2472 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2473 | goto end; | |
2474 | } | |
2475 | ||
2476 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2477 | monitor_timer_interval); | |
2478 | if (ret) { | |
2479 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2480 | goto end; | |
2481 | } | |
275472aa JR |
2482 | } else if (!strcmp((const char *) attr_node->name, |
2483 | config_element_blocking_timeout)) { | |
2484 | xmlChar *content; | |
2485 | int64_t blocking_timeout = 0; | |
2486 | ||
2487 | /* blocking_timeout */ | |
2488 | content = xmlNodeGetContent(attr_node); | |
2489 | if (!content) { | |
2490 | ret = -LTTNG_ERR_NOMEM; | |
2491 | goto end; | |
2492 | } | |
2493 | ||
2494 | ret = parse_int(content, &blocking_timeout); | |
2495 | free(content); | |
2496 | if (ret) { | |
2497 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2498 | goto end; | |
2499 | } | |
2500 | ||
2501 | ret = lttng_channel_set_blocking_timeout(channel, | |
2502 | blocking_timeout); | |
2503 | if (ret) { | |
2504 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2505 | goto end; | |
2506 | } | |
dcf266c0 JG |
2507 | } else if (!strcmp((const char *) attr_node->name, |
2508 | config_element_events)) { | |
2509 | /* events */ | |
2510 | *events_node = attr_node; | |
2511 | } else { | |
2512 | /* contexts */ | |
2513 | *contexts_node = attr_node; | |
2514 | } | |
2515 | ret = 0; | |
2516 | end: | |
2517 | return ret; | |
2518 | } | |
2519 | ||
2520 | static | |
2521 | int process_context_node(xmlNodePtr context_node, | |
2522 | struct lttng_handle *handle, const char *channel_name) | |
2523 | { | |
2524 | int ret; | |
2525 | struct lttng_event_context context; | |
2526 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2527 | ||
a0377dfe FD |
2528 | LTTNG_ASSERT(handle); |
2529 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2530 | |
2531 | if (!context_child_node) { | |
2532 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2533 | goto end; | |
2534 | } | |
2535 | ||
2536 | memset(&context, 0, sizeof(context)); | |
2537 | ||
2538 | if (!strcmp((const char *) context_child_node->name, | |
2539 | config_element_type)) { | |
2540 | /* type */ | |
2541 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2542 | |
dcf266c0 JG |
2543 | if (!content) { |
2544 | ret = -LTTNG_ERR_NOMEM; | |
2545 | goto end; | |
2546 | } | |
2547 | ||
2548 | ret = get_context_type(content); | |
2549 | free(content); | |
2550 | if (ret < 0) { | |
2551 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2552 | goto end; | |
2553 | } | |
2554 | ||
2555 | context.ctx = ret; | |
045fc617 JG |
2556 | } else if (!strcmp((const char *) context_child_node->name, |
2557 | config_element_context_perf)) { | |
2558 | /* perf */ | |
dcf266c0 JG |
2559 | xmlNodePtr perf_attr_node; |
2560 | ||
14ce5bd8 JG |
2561 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2562 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2563 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2564 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2565 | perf_attr_node; perf_attr_node = | |
2566 | xmlNextElementSibling(perf_attr_node)) { | |
2567 | if (!strcmp((const char *) perf_attr_node->name, | |
2568 | config_element_type)) { | |
2569 | xmlChar *content; | |
2570 | uint64_t type = 0; | |
2571 | ||
2572 | /* type */ | |
2573 | content = xmlNodeGetContent(perf_attr_node); | |
2574 | if (!content) { | |
2575 | ret = -LTTNG_ERR_NOMEM; | |
2576 | goto end; | |
2577 | } | |
2578 | ||
2579 | ret = parse_uint(content, &type); | |
2580 | free(content); | |
2581 | if (ret) { | |
2582 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2583 | goto end; | |
2584 | } | |
2585 | ||
2586 | if (type > UINT32_MAX) { | |
2587 | WARN("perf context type out of range."); | |
2588 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2589 | goto end; | |
2590 | } | |
2591 | ||
2592 | context.u.perf_counter.type = type; | |
2593 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2594 | config_element_config)) { | |
2595 | xmlChar *content; | |
2596 | uint64_t config = 0; | |
2597 | ||
2598 | /* config */ | |
2599 | content = xmlNodeGetContent(perf_attr_node); | |
2600 | if (!content) { | |
2601 | ret = -LTTNG_ERR_NOMEM; | |
2602 | goto end; | |
2603 | } | |
2604 | ||
2605 | ret = parse_uint(content, &config); | |
2606 | free(content); | |
2607 | if (ret) { | |
2608 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2609 | goto end; | |
2610 | } | |
2611 | ||
2612 | context.u.perf_counter.config = config; | |
2613 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2614 | config_element_name)) { | |
2615 | xmlChar *content; | |
dcf266c0 JG |
2616 | |
2617 | /* name */ | |
2618 | content = xmlNodeGetContent(perf_attr_node); | |
2619 | if (!content) { | |
2620 | ret = -LTTNG_ERR_NOMEM; | |
2621 | goto end; | |
2622 | } | |
2623 | ||
d2e67842 JG |
2624 | ret = lttng_strncpy(context.u.perf_counter.name, |
2625 | (const char *) content, | |
2626 | LTTNG_SYMBOL_NAME_LEN); | |
2627 | if (ret == -1) { | |
2628 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2629 | (const char *) content, | |
2630 | strlen((const char *) content), | |
2631 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2632 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2633 | free(content); | |
2634 | goto end; | |
2635 | } | |
dcf266c0 JG |
2636 | free(content); |
2637 | } | |
2638 | } | |
045fc617 JG |
2639 | } else if (!strcmp((const char *) context_child_node->name, |
2640 | config_element_context_app)) { | |
2641 | /* application context */ | |
2642 | xmlNodePtr app_ctx_node; | |
2643 | ||
2644 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2645 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2646 | app_ctx_node; app_ctx_node = | |
2647 | xmlNextElementSibling(app_ctx_node)) { | |
2648 | xmlChar *content; | |
2649 | char **target = strcmp( | |
2650 | (const char *) app_ctx_node->name, | |
2651 | config_element_context_app_provider_name) == 0 ? | |
2652 | &context.u.app_ctx.provider_name : | |
2653 | &context.u.app_ctx.ctx_name; | |
2654 | ||
2655 | content = xmlNodeGetContent(app_ctx_node); | |
2656 | if (!content) { | |
2657 | ret = -LTTNG_ERR_NOMEM; | |
2658 | goto end; | |
2659 | } | |
2660 | ||
2661 | *target = (char *) content; | |
2662 | } | |
2663 | } else { | |
2664 | /* Unrecognized context type */ | |
2665 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2666 | goto end; | |
dcf266c0 JG |
2667 | } |
2668 | ||
2669 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2670 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2671 | free(context.u.app_ctx.provider_name); | |
2672 | free(context.u.app_ctx.ctx_name); | |
2673 | } | |
dcf266c0 JG |
2674 | end: |
2675 | return ret; | |
2676 | } | |
2677 | ||
2678 | static | |
2679 | int process_contexts_node(xmlNodePtr contexts_node, | |
2680 | struct lttng_handle *handle, const char *channel_name) | |
2681 | { | |
2682 | int ret = 0; | |
2683 | xmlNodePtr context_node; | |
2684 | ||
2685 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2686 | context_node = xmlNextElementSibling(context_node)) { | |
2687 | ret = process_context_node(context_node, handle, channel_name); | |
2688 | if (ret) { | |
2689 | goto end; | |
2690 | } | |
2691 | } | |
2692 | end: | |
2693 | return ret; | |
2694 | } | |
2695 | ||
159b042f | 2696 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2697 | const char **element_id_tracker, |
159b042f JG |
2698 | const char **element_value_type, |
2699 | const char **element_value, | |
2700 | const char **element_value_alias, | |
55c9e7ca JR |
2701 | const char **element_name) |
2702 | { | |
2703 | int ret = 0; | |
2704 | ||
159b042f JG |
2705 | switch (process_attr) { |
2706 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2707 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2708 | *element_value_type = config_element_process_attr_pid_value; | |
2709 | *element_value = config_element_process_attr_id; | |
2710 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2711 | *element_name = NULL; |
2712 | break; | |
159b042f JG |
2713 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2714 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2715 | *element_value_type = config_element_process_attr_vpid_value; | |
2716 | *element_value = config_element_process_attr_id; | |
2717 | *element_value_alias = NULL; | |
55c9e7ca JR |
2718 | *element_name = NULL; |
2719 | break; | |
159b042f JG |
2720 | case LTTNG_PROCESS_ATTR_USER_ID: |
2721 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2722 | *element_value_type = config_element_process_attr_uid_value; | |
2723 | *element_value = config_element_process_attr_id; | |
2724 | *element_value_alias = NULL; | |
55c9e7ca JR |
2725 | *element_name = config_element_name; |
2726 | break; | |
159b042f JG |
2727 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2728 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2729 | *element_value_type = config_element_process_attr_vuid_value; | |
2730 | *element_value = config_element_process_attr_id; | |
2731 | *element_value_alias = NULL; | |
55c9e7ca JR |
2732 | *element_name = config_element_name; |
2733 | break; | |
159b042f JG |
2734 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2735 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2736 | *element_value_type = config_element_process_attr_gid_value; | |
2737 | *element_value = config_element_process_attr_id; | |
2738 | *element_value_alias = NULL; | |
55c9e7ca JR |
2739 | *element_name = config_element_name; |
2740 | break; | |
159b042f JG |
2741 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2742 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2743 | *element_value_type = config_element_process_attr_vgid_value; | |
2744 | *element_value = config_element_process_attr_id; | |
2745 | *element_value_alias = NULL; | |
55c9e7ca JR |
2746 | *element_name = config_element_name; |
2747 | break; | |
2748 | default: | |
2749 | ret = LTTNG_ERR_INVALID; | |
2750 | } | |
2751 | return ret; | |
2752 | } | |
2753 | ||
f7af9a72 JG |
2754 | static int process_legacy_pid_tracker_node( |
2755 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2756 | { | |
2757 | int ret = 0, child_count; | |
2758 | xmlNodePtr targets_node = NULL; | |
2759 | xmlNodePtr node; | |
2760 | const char *element_id_tracker; | |
2761 | const char *element_target_id; | |
2762 | const char *element_id; | |
2763 | const char *element_id_alias; | |
2764 | const char *element_name; | |
2765 | enum lttng_error_code tracker_handle_ret_code; | |
2766 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2767 | enum lttng_process_attr_tracker_handle_status status; | |
2768 | const enum lttng_process_attr process_attr = | |
2769 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2770 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2771 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2772 | ||
a0377dfe | 2773 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2774 | |
2775 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2776 | handle->session_name, handle->domain.type, | |
2777 | process_attr, | |
2778 | &tracker_handle); | |
2779 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2780 | ret = LTTNG_ERR_INVALID; | |
2781 | goto end; | |
2782 | } | |
2783 | ||
2784 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2785 | &element_target_id, &element_id, &element_id_alias, | |
2786 | &element_name); | |
2787 | if (ret) { | |
2788 | goto end; | |
2789 | } | |
2790 | ||
2791 | /* Get the targets node */ | |
2792 | for (node = xmlFirstElementChild(trackers_node); node; | |
2793 | node = xmlNextElementSibling(node)) { | |
2794 | if (!strcmp((const char *) node->name, | |
2795 | config_element_tracker_targets_legacy)) { | |
2796 | targets_node = node; | |
2797 | break; | |
2798 | } | |
2799 | } | |
2800 | ||
2801 | if (!targets_node) { | |
2802 | ret = LTTNG_ERR_INVALID; | |
2803 | goto end; | |
2804 | } | |
2805 | ||
2806 | /* Go through all id target node */ | |
2807 | child_count = xmlChildElementCount(targets_node); | |
2808 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2809 | tracker_handle, | |
2810 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2811 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2812 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2813 | ret = LTTNG_ERR_UNK; | |
2814 | goto end; | |
2815 | } | |
2816 | ||
2817 | /* Add all tracked values. */ | |
2818 | for (node = xmlFirstElementChild(targets_node); node; | |
2819 | node = xmlNextElementSibling(node)) { | |
2820 | xmlNodePtr pid_target_node = node; | |
2821 | ||
2822 | /* get pid_target node and track it */ | |
2823 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2824 | node = xmlNextElementSibling(node)) { | |
2825 | if (!strcmp((const char *) node->name, | |
2826 | config_element_tracker_pid_legacy)) { | |
2827 | int64_t id; | |
2828 | xmlChar *content = xmlNodeGetContent(node); | |
2829 | ||
2830 | if (!content) { | |
2831 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2832 | goto end; | |
2833 | } | |
2834 | ||
2835 | ret = parse_int(content, &id); | |
2836 | free(content); | |
2837 | if (ret) { | |
2838 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2839 | goto end; | |
2840 | } | |
2841 | ||
2842 | switch (process_attr) { | |
2843 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2844 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2845 | tracker_handle, | |
2846 | (pid_t) id); | |
2847 | break; | |
2848 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2849 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2850 | tracker_handle, | |
2851 | (pid_t) id); | |
2852 | break; | |
2853 | default: | |
2854 | ret = LTTNG_ERR_INVALID; | |
2855 | goto end; | |
2856 | } | |
2857 | } | |
2858 | switch (status) { | |
2859 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2860 | continue; | |
2861 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2862 | ret = LTTNG_ERR_INVALID; | |
2863 | break; | |
2864 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2865 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2866 | break; | |
2867 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2868 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2869 | break; | |
2870 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2871 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2872 | default: | |
2873 | ret = LTTNG_ERR_UNK; | |
2874 | goto end; | |
2875 | } | |
2876 | } | |
2877 | node = pid_target_node; | |
2878 | } | |
2879 | ||
2880 | end: | |
2881 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2882 | return ret; | |
2883 | } | |
2884 | ||
55c9e7ca JR |
2885 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2886 | struct lttng_handle *handle, | |
159b042f | 2887 | enum lttng_process_attr process_attr) |
847a5916 | 2888 | { |
159b042f | 2889 | int ret = 0, child_count; |
f7af9a72 | 2890 | xmlNodePtr values_node = NULL; |
847a5916 | 2891 | xmlNodePtr node; |
55c9e7ca JR |
2892 | const char *element_id_tracker; |
2893 | const char *element_target_id; | |
2894 | const char *element_id; | |
2895 | const char *element_id_alias; | |
2896 | const char *element_name; | |
159b042f JG |
2897 | enum lttng_error_code tracker_handle_ret_code; |
2898 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2899 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2900 | |
a0377dfe FD |
2901 | LTTNG_ASSERT(handle); |
2902 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2903 | |
159b042f JG |
2904 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2905 | handle->session_name, handle->domain.type, process_attr, | |
2906 | &tracker_handle); | |
2907 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2908 | ret = LTTNG_ERR_INVALID; | |
2909 | goto end; | |
2910 | } | |
2911 | ||
2912 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2913 | &element_target_id, &element_id, &element_id_alias, |
2914 | &element_name); | |
2915 | if (ret) { | |
159b042f | 2916 | goto end; |
55c9e7ca JR |
2917 | } |
2918 | ||
f7af9a72 | 2919 | /* get the values node */ |
55c9e7ca JR |
2920 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2921 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2922 | if (!strcmp((const char *) node->name, |
159b042f | 2923 | config_element_process_attr_values)) { |
f7af9a72 | 2924 | values_node = node; |
847a5916 JR |
2925 | break; |
2926 | } | |
2927 | } | |
2928 | ||
f7af9a72 | 2929 | if (!values_node) { |
847a5916 JR |
2930 | ret = LTTNG_ERR_INVALID; |
2931 | goto end; | |
2932 | } | |
2933 | ||
55c9e7ca | 2934 | /* Go through all id target node */ |
f7af9a72 | 2935 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2936 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2937 | tracker_handle, | |
2938 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2939 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2940 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2941 | ret = LTTNG_ERR_UNK; | |
2942 | goto end; | |
847a5916 | 2943 | } |
159b042f JG |
2944 | |
2945 | /* Add all tracked values. */ | |
f7af9a72 | 2946 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2947 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2948 | xmlNodePtr id_target_node = node; |
847a5916 | 2949 | |
55c9e7ca JR |
2950 | /* get id node and track it */ |
2951 | for (node = xmlFirstElementChild(id_target_node); node; | |
2952 | node = xmlNextElementSibling(node)) { | |
2953 | if (!strcmp((const char *) node->name, element_id) || | |
2954 | (element_id_alias && | |
2955 | !strcmp((const char *) node->name, | |
2956 | element_id_alias))) { | |
2957 | int64_t id; | |
159b042f | 2958 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2959 | |
847a5916 JR |
2960 | if (!content) { |
2961 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2962 | goto end; | |
2963 | } | |
2964 | ||
55c9e7ca | 2965 | ret = parse_int(content, &id); |
847a5916 JR |
2966 | free(content); |
2967 | if (ret) { | |
2968 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2969 | goto end; | |
2970 | } | |
2971 | ||
159b042f JG |
2972 | switch (process_attr) { |
2973 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2974 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2975 | tracker_handle, | |
2976 | (pid_t) id); | |
2977 | break; | |
2978 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2979 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2980 | tracker_handle, | |
2981 | (pid_t) id); | |
2982 | break; | |
2983 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2984 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2985 | tracker_handle, | |
2986 | (uid_t) id); | |
2987 | break; | |
2988 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2989 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2990 | tracker_handle, | |
2991 | (uid_t) id); | |
2992 | break; | |
2993 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2994 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2995 | tracker_handle, | |
2996 | (gid_t) id); | |
2997 | break; | |
2998 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2999 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
3000 | tracker_handle, | |
3001 | (gid_t) id); | |
3002 | break; | |
3003 | default: | |
3004 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
3005 | goto end; |
3006 | } | |
159b042f JG |
3007 | } else if (element_name && |
3008 | !strcmp((const char *) node->name, | |
3009 | element_name)) { | |
3010 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 3011 | |
55c9e7ca JR |
3012 | if (!content) { |
3013 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3014 | goto end; | |
3015 | } | |
2d97a006 | 3016 | |
159b042f JG |
3017 | switch (process_attr) { |
3018 | case LTTNG_PROCESS_ATTR_USER_ID: | |
3019 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
3020 | tracker_handle, | |
3021 | (const char *) content); | |
3022 | break; | |
3023 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3024 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
3025 | tracker_handle, | |
3026 | (const char *) content); | |
3027 | break; | |
3028 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3029 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
3030 | tracker_handle, | |
3031 | (const char *) content); | |
3032 | break; | |
3033 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3034 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
3035 | tracker_handle, | |
3036 | (const char *) content); | |
3037 | break; | |
3038 | default: | |
3039 | free(content); | |
3040 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
3041 | goto end; |
3042 | } | |
55c9e7ca | 3043 | free(content); |
159b042f JG |
3044 | } |
3045 | switch (status) { | |
3046 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
3047 | continue; | |
3048 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
3049 | ret = LTTNG_ERR_INVALID; | |
3050 | break; | |
3051 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
3052 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
3053 | break; | |
3054 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
3055 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
3056 | break; | |
3057 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
3058 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
3059 | default: | |
3060 | ret = LTTNG_ERR_UNK; | |
3061 | goto end; | |
847a5916 JR |
3062 | } |
3063 | } | |
55c9e7ca | 3064 | node = id_target_node; |
847a5916 JR |
3065 | } |
3066 | ||
3067 | end: | |
159b042f | 3068 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
3069 | return ret; |
3070 | } | |
3071 | ||
dcf266c0 JG |
3072 | static |
3073 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
3074 | { | |
3075 | int ret; | |
3076 | struct lttng_domain domain = { 0 }; | |
3077 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 3078 | struct lttng_channel *channel = NULL; |
dcf266c0 | 3079 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
3080 | xmlNodePtr trackers_node = NULL; |
3081 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
3082 | xmlNodePtr vpid_tracker_node = NULL; |
3083 | xmlNodePtr uid_tracker_node = NULL; | |
3084 | xmlNodePtr vuid_tracker_node = NULL; | |
3085 | xmlNodePtr gid_tracker_node = NULL; | |
3086 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
3087 | xmlNodePtr node; |
3088 | ||
a0377dfe | 3089 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
3090 | |
3091 | ret = init_domain(domain_node, &domain); | |
3092 | if (ret) { | |
3093 | goto end; | |
3094 | } | |
3095 | ||
3096 | handle = lttng_create_handle(session_name, &domain); | |
3097 | if (!handle) { | |
3098 | ret = -LTTNG_ERR_NOMEM; | |
3099 | goto end; | |
3100 | } | |
3101 | ||
3102 | /* get the channels node */ | |
3103 | for (node = xmlFirstElementChild(domain_node); node; | |
3104 | node = xmlNextElementSibling(node)) { | |
3105 | if (!strcmp((const char *) node->name, | |
3106 | config_element_channels)) { | |
3107 | channels_node = node; | |
3108 | break; | |
3109 | } | |
3110 | } | |
3111 | ||
3112 | if (!channels_node) { | |
3113 | goto end; | |
3114 | } | |
3115 | ||
3116 | /* create all channels */ | |
3117 | for (node = xmlFirstElementChild(channels_node); node; | |
3118 | node = xmlNextElementSibling(node)) { | |
36d1687c | 3119 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
3120 | xmlNodePtr contexts_node = NULL; |
3121 | xmlNodePtr events_node = NULL; | |
3122 | xmlNodePtr channel_attr_node; | |
3123 | ||
36d1687c JG |
3124 | /* |
3125 | * Channels of the "agent" types cannot be created directly. | |
3126 | * They are meant to be created implicitly through the | |
3127 | * activation of events in their domain. However, a user | |
3128 | * can override the default channel configuration attributes | |
3129 | * by creating the underlying UST channel _before_ enabling | |
3130 | * an agent domain event. | |
3131 | * | |
3132 | * Hence, the channel's type is substituted before the creation | |
3133 | * and restored by the time the events are created. | |
3134 | */ | |
3135 | switch (domain.type) { | |
3136 | case LTTNG_DOMAIN_JUL: | |
3137 | case LTTNG_DOMAIN_LOG4J: | |
3138 | case LTTNG_DOMAIN_PYTHON: | |
3139 | domain.type = LTTNG_DOMAIN_UST; | |
3140 | default: | |
3141 | break; | |
3142 | } | |
3143 | ||
4fc2b126 JR |
3144 | channel = lttng_channel_create(&domain); |
3145 | if (!channel) { | |
3146 | ret = -1; | |
3147 | goto end; | |
3148 | } | |
dcf266c0 JG |
3149 | |
3150 | for (channel_attr_node = xmlFirstElementChild(node); | |
3151 | channel_attr_node; channel_attr_node = | |
3152 | xmlNextElementSibling(channel_attr_node)) { | |
3153 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 3154 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
3155 | if (ret) { |
3156 | goto end; | |
3157 | } | |
3158 | } | |
3159 | ||
4fc2b126 | 3160 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3161 | if (ret < 0) { |
3162 | goto end; | |
3163 | } | |
3164 | ||
36d1687c JG |
3165 | /* Restore the original channel domain. */ |
3166 | domain.type = original_domain; | |
3167 | ||
4fc2b126 | 3168 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3169 | if (ret) { |
3170 | goto end; | |
3171 | } | |
3172 | ||
3173 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3174 | channel->name); |
dcf266c0 JG |
3175 | if (ret) { |
3176 | goto end; | |
3177 | } | |
4fc2b126 JR |
3178 | |
3179 | lttng_channel_destroy(channel); | |
dcf266c0 | 3180 | } |
4fc2b126 | 3181 | channel = NULL; |
847a5916 JR |
3182 | |
3183 | /* get the trackers node */ | |
3184 | for (node = xmlFirstElementChild(domain_node); node; | |
3185 | node = xmlNextElementSibling(node)) { | |
3186 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3187 | config_element_process_attr_trackers) || |
3188 | !strcmp((const char *) node->name, | |
3189 | config_element_trackers_legacy)) { | |
3190 | if (trackers_node) { | |
3191 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3192 | config_element_process_attr_trackers, | |
3193 | config_element_trackers_legacy); | |
3194 | ret = -1; | |
3195 | goto end; | |
3196 | } | |
847a5916 JR |
3197 | trackers_node = node; |
3198 | break; | |
3199 | } | |
3200 | } | |
3201 | ||
3202 | if (!trackers_node) { | |
3203 | goto end; | |
3204 | } | |
3205 | ||
3206 | for (node = xmlFirstElementChild(trackers_node); node; | |
3207 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3208 | if (!strcmp((const char *) node->name, |
159b042f | 3209 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3210 | pid_tracker_node = node; |
55c9e7ca | 3211 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3212 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3213 | if (ret) { |
3214 | goto end; | |
3215 | } | |
3216 | } | |
3217 | if (!strcmp((const char *) node->name, | |
159b042f | 3218 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3219 | vpid_tracker_node = node; |
3220 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3221 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3222 | if (ret) { |
3223 | goto end; | |
3224 | } | |
3225 | } | |
3226 | if (!strcmp((const char *) node->name, | |
159b042f | 3227 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3228 | uid_tracker_node = node; |
3229 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3230 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3231 | if (ret) { |
3232 | goto end; | |
3233 | } | |
3234 | } | |
3235 | if (!strcmp((const char *) node->name, | |
159b042f | 3236 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3237 | vuid_tracker_node = node; |
3238 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3239 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3240 | if (ret) { |
3241 | goto end; | |
3242 | } | |
3243 | } | |
3244 | if (!strcmp((const char *) node->name, | |
159b042f | 3245 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3246 | gid_tracker_node = node; |
3247 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3248 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3249 | if (ret) { |
3250 | goto end; | |
3251 | } | |
3252 | } | |
3253 | if (!strcmp((const char *) node->name, | |
159b042f | 3254 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3255 | vgid_tracker_node = node; |
3256 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3257 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3258 | if (ret) { |
3259 | goto end; | |
3260 | } | |
3261 | } | |
f7af9a72 JG |
3262 | if (!strcmp((const char *) node->name, |
3263 | config_element_pid_tracker_legacy)) { | |
3264 | ret = process_legacy_pid_tracker_node(node, handle); | |
3265 | if (ret) { | |
3266 | goto end; | |
3267 | } | |
3268 | } | |
847a5916 JR |
3269 | } |
3270 | ||
dcf266c0 | 3271 | end: |
4fc2b126 | 3272 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3273 | lttng_destroy_handle(handle); |
3274 | return ret; | |
3275 | } | |
3276 | ||
66ea93b1 JG |
3277 | static |
3278 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3279 | { | |
3280 | int ret; | |
3281 | enum lttng_rotation_status status; | |
3282 | struct lttng_rotation_schedule *periodic = | |
3283 | lttng_rotation_schedule_periodic_create(); | |
3284 | ||
3285 | if (!periodic) { | |
3286 | ret = -LTTNG_ERR_NOMEM; | |
3287 | goto error; | |
3288 | } | |
3289 | ||
3290 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3291 | time_us); | |
3292 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3293 | ret = -LTTNG_ERR_INVALID; | |
3294 | goto error; | |
3295 | } | |
3296 | ||
3297 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3298 | switch (status) { | |
3299 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3300 | ret = 0; |
66ea93b1 JG |
3301 | break; |
3302 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3303 | case LTTNG_ROTATION_STATUS_INVALID: | |
3304 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3305 | break; | |
3306 | default: | |
3307 | ret = -LTTNG_ERR_UNK; | |
3308 | break; | |
3309 | } | |
3310 | error: | |
3311 | lttng_rotation_schedule_destroy(periodic); | |
3312 | return ret; | |
3313 | } | |
3314 | ||
3315 | static | |
3316 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3317 | { | |
3318 | int ret; | |
3319 | enum lttng_rotation_status status; | |
3320 | struct lttng_rotation_schedule *size = | |
3321 | lttng_rotation_schedule_size_threshold_create(); | |
3322 | ||
3323 | if (!size) { | |
3324 | ret = -LTTNG_ERR_NOMEM; | |
3325 | goto error; | |
3326 | } | |
3327 | ||
3328 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3329 | size_bytes); | |
3330 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3331 | ret = -LTTNG_ERR_INVALID; | |
3332 | goto error; | |
3333 | } | |
3334 | ||
3335 | status = lttng_session_add_rotation_schedule(name, size); | |
3336 | switch (status) { | |
3337 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3338 | ret = 0; |
66ea93b1 JG |
3339 | break; |
3340 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3341 | case LTTNG_ROTATION_STATUS_INVALID: | |
3342 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3343 | break; | |
3344 | default: | |
3345 | ret = -LTTNG_ERR_UNK; | |
3346 | break; | |
3347 | } | |
3348 | error: | |
3349 | lttng_rotation_schedule_destroy(size); | |
3350 | return ret; | |
3351 | } | |
3352 | ||
ce6176f2 JG |
3353 | static |
3354 | int process_session_rotation_schedules_node( | |
3355 | xmlNodePtr schedules_node, | |
3356 | uint64_t *rotation_timer_interval, | |
3357 | uint64_t *rotation_size) | |
3358 | { | |
3359 | int ret = 0; | |
3360 | xmlNodePtr child; | |
3361 | ||
3362 | for (child = xmlFirstElementChild(schedules_node); | |
3363 | child; | |
3364 | child = xmlNextElementSibling(child)) { | |
3365 | if (!strcmp((const char *) child->name, | |
3366 | config_element_rotation_schedule_periodic)) { | |
3367 | xmlChar *content; | |
3368 | xmlNodePtr time_us_node; | |
3369 | ||
3370 | /* periodic rotation schedule */ | |
3371 | time_us_node = xmlFirstElementChild(child); | |
3372 | if (!time_us_node || | |
3373 | strcmp((const char *) time_us_node->name, | |
3374 | config_element_rotation_schedule_periodic_time_us)) { | |
3375 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3376 | goto end; | |
3377 | } | |
3378 | ||
3379 | /* time_us child */ | |
3380 | content = xmlNodeGetContent(time_us_node); | |
3381 | if (!content) { | |
3382 | ret = -LTTNG_ERR_NOMEM; | |
3383 | goto end; | |
3384 | } | |
3385 | ret = parse_uint(content, rotation_timer_interval); | |
3386 | free(content); | |
3387 | if (ret) { | |
3388 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3389 | goto end; | |
3390 | } | |
3391 | } else if (!strcmp((const char *) child->name, | |
3392 | config_element_rotation_schedule_size_threshold)) { | |
3393 | xmlChar *content; | |
3394 | xmlNodePtr bytes_node; | |
3395 | ||
3396 | /* size_threshold rotation schedule */ | |
3397 | bytes_node = xmlFirstElementChild(child); | |
3398 | if (!bytes_node || | |
3399 | strcmp((const char *) bytes_node->name, | |
3400 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3401 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3402 | goto end; | |
3403 | } | |
3404 | ||
3405 | /* bytes child */ | |
3406 | content = xmlNodeGetContent(bytes_node); | |
3407 | if (!content) { | |
3408 | ret = -LTTNG_ERR_NOMEM; | |
3409 | goto end; | |
3410 | } | |
3411 | ret = parse_uint(content, rotation_size); | |
3412 | free(content); | |
3413 | if (ret) { | |
3414 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3415 | goto end; | |
3416 | } | |
3417 | } | |
3418 | } | |
3419 | ||
3420 | end: | |
3421 | return ret; | |
3422 | } | |
3423 | ||
dcf266c0 JG |
3424 | static |
3425 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3426 | int overwrite, |
3427 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3428 | { |
3429 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3430 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3431 | rotation_timer_interval = 0, |
3432 | rotation_size = 0; | |
d324faf7 | 3433 | xmlChar *name = NULL; |
9e7c9f56 | 3434 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3435 | xmlNodePtr domains_node = NULL; |
3436 | xmlNodePtr output_node = NULL; | |
3437 | xmlNodePtr node; | |
90936dcf | 3438 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3439 | struct lttng_domain *kernel_domain = NULL; |
3440 | struct lttng_domain *ust_domain = NULL; | |
3441 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3442 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3443 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3444 | |
3445 | for (node = xmlFirstElementChild(session_node); node; | |
3446 | node = xmlNextElementSibling(node)) { | |
3447 | if (!name && !strcmp((const char *) node->name, | |
3448 | config_element_name)) { | |
3449 | /* name */ | |
3450 | xmlChar *node_content = xmlNodeGetContent(node); | |
3451 | if (!node_content) { | |
3452 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3453 | goto error; |
dcf266c0 JG |
3454 | } |
3455 | ||
d324faf7 | 3456 | name = node_content; |
dcf266c0 JG |
3457 | } else if (!domains_node && !strcmp((const char *) node->name, |
3458 | config_element_domains)) { | |
3459 | /* domains */ | |
3460 | domains_node = node; | |
3461 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3462 | config_element_started)) { | |
3463 | /* started */ | |
3464 | xmlChar *node_content = xmlNodeGetContent(node); | |
3465 | if (!node_content) { | |
3466 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3467 | goto error; |
dcf266c0 JG |
3468 | } |
3469 | ||
3470 | ret = parse_bool(node_content, &started); | |
3471 | free(node_content); | |
3472 | if (ret) { | |
3473 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3474 | goto error; |
dcf266c0 JG |
3475 | } |
3476 | } else if (!output_node && !strcmp((const char *) node->name, | |
3477 | config_element_output)) { | |
3478 | /* output */ | |
3479 | output_node = node; | |
9e7c9f56 JR |
3480 | } else if (!shm_path && !strcmp((const char *) node->name, |
3481 | config_element_shared_memory_path)) { | |
3482 | /* shared memory path */ | |
3483 | xmlChar *node_content = xmlNodeGetContent(node); | |
3484 | if (!node_content) { | |
3485 | ret = -LTTNG_ERR_NOMEM; | |
3486 | goto error; | |
3487 | } | |
3488 | ||
3489 | shm_path = node_content; | |
dcf266c0 | 3490 | } else { |
259c2674 JD |
3491 | /* |
3492 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3493 | * rotation_timer_interval. |
3494 | */ | |
3495 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3496 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3497 | if (!strcmp((const char *) attributes_child->name, | |
3498 | config_element_snapshot_mode)) { | |
3499 | /* snapshot_mode */ | |
3500 | xmlChar *snapshot_mode_content = | |
3501 | xmlNodeGetContent(attributes_child); | |
3502 | if (!snapshot_mode_content) { | |
3503 | ret = -LTTNG_ERR_NOMEM; | |
3504 | goto error; | |
3505 | } | |
dcf266c0 | 3506 | |
90936dcf JD |
3507 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3508 | free(snapshot_mode_content); | |
3509 | if (ret) { | |
3510 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3511 | goto error; | |
3512 | } | |
3513 | } else if (!strcmp((const char *) attributes_child->name, | |
3514 | config_element_live_timer_interval)) { | |
3515 | /* live_timer_interval */ | |
3516 | xmlChar *timer_interval_content = | |
3517 | xmlNodeGetContent(attributes_child); | |
3518 | if (!timer_interval_content) { | |
3519 | ret = -LTTNG_ERR_NOMEM; | |
3520 | goto error; | |
3521 | } | |
dcf266c0 | 3522 | |
90936dcf JD |
3523 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3524 | free(timer_interval_content); | |
3525 | if (ret) { | |
3526 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3527 | goto error; | |
3528 | } | |
ce6176f2 JG |
3529 | } else if (!strcmp((const char *) attributes_child->name, |
3530 | config_element_rotation_schedules)) { | |
3531 | ret = process_session_rotation_schedules_node( | |
3532 | attributes_child, | |
3533 | &rotation_timer_interval, | |
3534 | &rotation_size); | |
90936dcf JD |
3535 | if (ret) { |
3536 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3537 | goto error; | |
3538 | } | |
259c2674 | 3539 | |
259c2674 JD |
3540 | } |
3541 | } | |
dcf266c0 JG |
3542 | } |
3543 | } | |
3544 | ||
3545 | if (!name) { | |
3546 | /* Mandatory attribute, as defined in the session XSD */ | |
3547 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3548 | goto error; |
dcf266c0 JG |
3549 | } |
3550 | ||
d324faf7 | 3551 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3552 | /* This is not the session we are looking for */ |
c2da8cde DG |
3553 | ret = -LTTNG_ERR_NO_SESSION; |
3554 | goto error; | |
dcf266c0 JG |
3555 | } |
3556 | ||
3557 | /* Init domains to create the session handles */ | |
3558 | for (node = xmlFirstElementChild(domains_node); node; | |
3559 | node = xmlNextElementSibling(node)) { | |
3560 | struct lttng_domain *domain; | |
3561 | ||
3562 | domain = zmalloc(sizeof(*domain)); | |
3563 | if (!domain) { | |
3564 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3565 | goto error; |
dcf266c0 JG |
3566 | } |
3567 | ||
3568 | ret = init_domain(node, domain); | |
3569 | if (ret) { | |
3570 | goto domain_init_error; | |
3571 | } | |
3572 | ||
3573 | switch (domain->type) { | |
3574 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3575 | if (kernel_domain) { |
3576 | /* Same domain seen twice, invalid! */ | |
3577 | goto domain_init_error; | |
3578 | } | |
dcf266c0 JG |
3579 | kernel_domain = domain; |
3580 | break; | |
3581 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3582 | if (ust_domain) { |
3583 | /* Same domain seen twice, invalid! */ | |
3584 | goto domain_init_error; | |
3585 | } | |
dcf266c0 JG |
3586 | ust_domain = domain; |
3587 | break; | |
3588 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3589 | if (jul_domain) { |
3590 | /* Same domain seen twice, invalid! */ | |
3591 | goto domain_init_error; | |
3592 | } | |
dcf266c0 JG |
3593 | jul_domain = domain; |
3594 | break; | |
5cdb6027 DG |
3595 | case LTTNG_DOMAIN_LOG4J: |
3596 | if (log4j_domain) { | |
3597 | /* Same domain seen twice, invalid! */ | |
3598 | goto domain_init_error; | |
3599 | } | |
3600 | log4j_domain = domain; | |
3601 | break; | |
0e115563 DG |
3602 | case LTTNG_DOMAIN_PYTHON: |
3603 | if (python_domain) { | |
3604 | /* Same domain seen twice, invalid! */ | |
3605 | goto domain_init_error; | |
3606 | } | |
3607 | python_domain = domain; | |
3608 | break; | |
dcf266c0 JG |
3609 | default: |
3610 | WARN("Invalid domain type"); | |
3611 | goto domain_init_error; | |
3612 | } | |
3613 | continue; | |
3614 | domain_init_error: | |
3615 | free(domain); | |
3616 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3617 | goto error; |
dcf266c0 JG |
3618 | } |
3619 | ||
2aaf5fc7 JR |
3620 | /* Apply overrides */ |
3621 | if (overrides) { | |
3622 | if (overrides->session_name) { | |
3623 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3624 | if (!name_override) { | |
3625 | ret = -LTTNG_ERR_NOMEM; | |
3626 | goto error; | |
3627 | } | |
3628 | ||
3629 | /* Overrides the session name to the provided name */ | |
3630 | xmlFree(name); | |
3631 | name = name_override; | |
3632 | } | |
3633 | } | |
3634 | ||
40b4155f | 3635 | if (overwrite) { |
dcf266c0 | 3636 | /* Destroy session if it exists */ |
d324faf7 | 3637 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3638 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3639 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3640 | goto error; |
dcf266c0 JG |
3641 | } |
3642 | } | |
3643 | ||
3644 | /* Create session type depending on output type */ | |
3645 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3646 | ret = create_snapshot_session((const char *) name, output_node, |
3647 | overrides); | |
dcf266c0 JG |
3648 | } else if (live_timer_interval && |
3649 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3650 | ret = create_session((const char *) name, |
1b08cbce | 3651 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3652 | } else { |
3653 | /* regular session */ | |
194dfca0 | 3654 | ret = create_session((const char *) name, |
1b08cbce | 3655 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3656 | } |
dcf266c0 | 3657 | if (ret) { |
c2da8cde | 3658 | goto error; |
dcf266c0 JG |
3659 | } |
3660 | ||
9e7c9f56 JR |
3661 | if (shm_path) { |
3662 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3663 | (const char *) shm_path); |
9e7c9f56 JR |
3664 | if (ret) { |
3665 | goto error; | |
3666 | } | |
3667 | } | |
3668 | ||
dcf266c0 JG |
3669 | for (node = xmlFirstElementChild(domains_node); node; |
3670 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3671 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3672 | if (ret) { |
3673 | goto end; | |
3674 | } | |
3675 | } | |
3676 | ||
66ea93b1 JG |
3677 | if (rotation_timer_interval) { |
3678 | ret = add_periodic_rotation((const char *) name, | |
3679 | rotation_timer_interval); | |
3680 | if (ret < 0) { | |
259c2674 JD |
3681 | goto error; |
3682 | } | |
66ea93b1 JG |
3683 | } |
3684 | if (rotation_size) { | |
3685 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3686 | rotation_size); |
66ea93b1 | 3687 | if (ret < 0) { |
259c2674 JD |
3688 | goto error; |
3689 | } | |
3690 | } | |
3691 | ||
dcf266c0 | 3692 | if (started) { |
d324faf7 | 3693 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3694 | if (ret) { |
3695 | goto end; | |
3696 | } | |
3697 | } | |
c2da8cde | 3698 | |
dcf266c0 | 3699 | end: |
b2579dc1 | 3700 | if (ret < 0) { |
d324faf7 JG |
3701 | ERR("Failed to load session %s: %s", (const char *) name, |
3702 | lttng_strerror(ret)); | |
3703 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3704 | } |
3705 | ||
c2da8cde | 3706 | error: |
dcf266c0 JG |
3707 | free(kernel_domain); |
3708 | free(ust_domain); | |
3709 | free(jul_domain); | |
5cdb6027 | 3710 | free(log4j_domain); |
135a3893 | 3711 | free(python_domain); |
d324faf7 | 3712 | xmlFree(name); |
9e7c9f56 | 3713 | xmlFree(shm_path); |
dcf266c0 JG |
3714 | return ret; |
3715 | } | |
3716 | ||
cf53c06d DG |
3717 | /* |
3718 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3719 | * Return -1 if the path is EPERM. | |
3720 | */ | |
3721 | static int validate_file_read_creds(const char *path) | |
3722 | { | |
3723 | int ret; | |
3724 | ||
a0377dfe | 3725 | LTTNG_ASSERT(path); |
cf53c06d DG |
3726 | |
3727 | /* Can we read the file. */ | |
3728 | ret = access(path, R_OK); | |
3729 | if (!ret) { | |
3730 | goto valid; | |
3731 | } | |
3732 | if (errno == EACCES) { | |
3733 | return -1; | |
3734 | } else { | |
3735 | /* Invalid. */ | |
3736 | return 0; | |
3737 | } | |
3738 | valid: | |
3739 | return 1; | |
3740 | } | |
3741 | ||
dcf266c0 JG |
3742 | static |
3743 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3744 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3745 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3746 | { |
3747 | int ret, session_found = !session_name; | |
3748 | xmlDocPtr doc = NULL; | |
3749 | xmlNodePtr sessions_node; | |
3750 | xmlNodePtr session_node; | |
dcf266c0 | 3751 | |
a0377dfe FD |
3752 | LTTNG_ASSERT(path); |
3753 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3754 | |
cf53c06d DG |
3755 | ret = validate_file_read_creds(path); |
3756 | if (ret != 1) { | |
3757 | if (ret == -1) { | |
3758 | ret = -LTTNG_ERR_EPERM; | |
3759 | } else { | |
3760 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3761 | } | |
dcf266c0 JG |
3762 | goto end; |
3763 | } | |
3764 | ||
3765 | doc = xmlParseFile(path); | |
3766 | if (!doc) { | |
3767 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3768 | goto end; | |
3769 | } | |
3770 | ||
3771 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3772 | if (ret) { | |
3773 | ERR("Session configuration file validation failed"); | |
3774 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3775 | goto end; | |
3776 | } | |
3777 | ||
3778 | sessions_node = xmlDocGetRootElement(doc); | |
3779 | if (!sessions_node) { | |
55c9e7ca | 3780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3781 | goto end; |
3782 | } | |
3783 | ||
3784 | for (session_node = xmlFirstElementChild(sessions_node); | |
3785 | session_node; session_node = | |
3786 | xmlNextElementSibling(session_node)) { | |
3787 | ret = process_session_node(session_node, | |
1b08cbce | 3788 | session_name, overwrite, overrides); |
317ea246 JG |
3789 | if (!session_name && ret) { |
3790 | /* Loading error occurred. */ | |
3791 | goto end; | |
3792 | } else if (session_name) { | |
3793 | if (ret == 0) { | |
3794 | /* Target session found and loaded */ | |
3795 | session_found = 1; | |
3796 | break; | |
3797 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3798 | /* | |
3799 | * Ignore this error, we are looking for a | |
3800 | * specific session. | |
3801 | */ | |
3802 | ret = 0; | |
3803 | } else { | |
3804 | /* Loading error occurred. */ | |
3805 | goto end; | |
3806 | } | |
dcf266c0 JG |
3807 | } |
3808 | } | |
3809 | end: | |
3810 | xmlFreeDoc(doc); | |
3811 | if (!ret) { | |
a96bc65d | 3812 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3813 | } |
3814 | return ret; | |
3815 | } | |
3816 | ||
3817 | static | |
3818 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3819 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3820 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3821 | { |
3822 | int ret, session_found = !session_name; | |
dcf266c0 | 3823 | DIR *directory = NULL; |
cce35f91 JG |
3824 | struct lttng_dynamic_buffer file_path; |
3825 | size_t path_len; | |
dcf266c0 | 3826 | |
a0377dfe FD |
3827 | LTTNG_ASSERT(path); |
3828 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3829 | path_len = strlen(path); |
3830 | lttng_dynamic_buffer_init(&file_path); | |
3831 | if (path_len >= LTTNG_PATH_MAX) { | |
3832 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3833 | path, path_len, LTTNG_PATH_MAX); | |
3834 | ret = -LTTNG_ERR_INVALID; | |
3835 | goto end; | |
3836 | } | |
dcf266c0 | 3837 | |
4af16958 DG |
3838 | directory = opendir(path); |
3839 | if (!directory) { | |
11143783 DG |
3840 | switch (errno) { |
3841 | case ENOTDIR: | |
0f0a81b5 DG |
3842 | /* Try the file loading. */ |
3843 | break; | |
11143783 DG |
3844 | case ENOENT: |
3845 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3846 | goto end; | |
3847 | default: | |
0f0a81b5 DG |
3848 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3849 | goto end; | |
4af16958 | 3850 | } |
dcf266c0 | 3851 | } |
4af16958 | 3852 | if (directory) { |
cce35f91 | 3853 | size_t file_path_root_len; |
dcf266c0 | 3854 | |
cce35f91 JG |
3855 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3856 | LTTNG_PATH_MAX); | |
3857 | if (ret) { | |
3858 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3859 | goto end; |
3860 | } | |
3861 | ||
cce35f91 JG |
3862 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3863 | if (ret) { | |
dcf266c0 | 3864 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3865 | goto end; |
3866 | } | |
3867 | ||
cce35f91 JG |
3868 | if (file_path.data[file_path.size - 1] != '/') { |
3869 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3870 | if (ret) { | |
3871 | ret = -LTTNG_ERR_NOMEM; | |
3872 | goto end; | |
3873 | } | |
dcf266c0 | 3874 | } |
cce35f91 | 3875 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3876 | |
3877 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3878 | for (;;) { |
3879 | size_t file_name_len; | |
3880 | struct dirent *result; | |
3881 | ||
3882 | /* | |
3883 | * When the end of the directory stream is reached, NULL | |
3884 | * is returned and errno is kept unchanged. When an | |
3885 | * error occurs, NULL is returned and errno is set | |
3886 | * accordingly. To distinguish between the two, set | |
3887 | * errno to zero before calling readdir(). | |
3888 | * | |
3889 | * On success, readdir() returns a pointer to a dirent | |
3890 | * structure. This structure may be statically | |
3891 | * allocated, do not attempt to free(3) it. | |
3892 | */ | |
3893 | errno = 0; | |
3894 | result = readdir(directory); | |
3895 | ||
ff86d8d0 | 3896 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3897 | if (!result) { |
3898 | if (errno) { | |
3899 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3900 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3901 | goto end; | |
3902 | } | |
3903 | break; | |
3904 | } | |
3905 | ||
3906 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3907 | |
3908 | if (file_name_len <= | |
3909 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3910 | continue; | |
3911 | } | |
3912 | ||
cce35f91 JG |
3913 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3914 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3915 | result->d_name, | |
3916 | /* +1 to account for NULL terminator. */ | |
3917 | file_path.size + file_name_len + 1, | |
3918 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3919 | continue; |
3920 | } | |
3921 | ||
cce35f91 | 3922 | /* Does the file end with .lttng? */ |
dcf266c0 | 3923 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3924 | result->d_name + file_name_len - sizeof( |
3925 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3926 | continue; |
3927 | } | |
3928 | ||
cce35f91 JG |
3929 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3930 | file_name_len + 1); | |
3931 | if (ret) { | |
3932 | ret = -LTTNG_ERR_NOMEM; | |
3933 | goto end; | |
3934 | } | |
dcf266c0 | 3935 | |
cce35f91 | 3936 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3937 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3938 | if (session_name && |
3939 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3940 | session_found = 1; |
3941 | break; | |
3942 | } | |
55c9e7ca JR |
3943 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3944 | goto end; | |
3945 | } | |
cce35f91 JG |
3946 | /* |
3947 | * Reset the buffer's size to the location of the | |
3948 | * path's trailing '/'. | |
3949 | */ | |
3950 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3951 | file_path_root_len); | |
3952 | if (ret) { | |
3953 | ret = -LTTNG_ERR_UNK; | |
3954 | goto end; | |
3955 | } | |
dcf266c0 | 3956 | } |
dcf266c0 JG |
3957 | } else { |
3958 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3959 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3960 | if (ret) { |
3961 | goto end; | |
dcf266c0 | 3962 | } |
55c9e7ca | 3963 | session_found = 1; |
dcf266c0 JG |
3964 | } |
3965 | ||
55c9e7ca | 3966 | ret = 0; |
dcf266c0 JG |
3967 | end: |
3968 | if (directory) { | |
3969 | if (closedir(directory)) { | |
3970 | PERROR("closedir"); | |
3971 | } | |
3972 | } | |
55c9e7ca JR |
3973 | if (!ret && !session_found) { |
3974 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3975 | } |
cce35f91 | 3976 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3977 | return ret; |
3978 | } | |
3979 | ||
ab38c13f DG |
3980 | /* |
3981 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3982 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3983 | */ |
3984 | static int validate_path_creds(const char *path) | |
3985 | { | |
3986 | int ret, uid = getuid(); | |
3987 | struct stat buf; | |
3988 | ||
a0377dfe | 3989 | LTTNG_ASSERT(path); |
ab38c13f | 3990 | |
cf53c06d | 3991 | if (uid == 0) { |
ab38c13f DG |
3992 | goto valid; |
3993 | } | |
3994 | ||
3995 | ret = stat(path, &buf); | |
3996 | if (ret < 0) { | |
3997 | if (errno != ENOENT) { | |
3998 | PERROR("stat"); | |
3999 | } | |
ab38c13f DG |
4000 | goto valid; |
4001 | } | |
4002 | ||
4003 | if (buf.st_uid != uid) { | |
4004 | goto invalid; | |
4005 | } | |
4006 | ||
4007 | valid: | |
ab38c13f | 4008 | return 1; |
cf53c06d DG |
4009 | invalid: |
4010 | return 0; | |
ab38c13f DG |
4011 | } |
4012 | ||
dcf266c0 | 4013 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
4014 | int overwrite, unsigned int autoload, |
4015 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4016 | { |
4017 | int ret; | |
6c66fa0f | 4018 | bool session_loaded = false; |
cf53c06d | 4019 | const char *path_ptr = NULL; |
dcf266c0 JG |
4020 | struct session_config_validation_ctx validation_ctx = { 0 }; |
4021 | ||
4022 | ret = init_session_config_validation_ctx(&validation_ctx); | |
4023 | if (ret) { | |
4024 | goto end; | |
4025 | } | |
4026 | ||
4027 | if (!path) { | |
4f00620d | 4028 | const char *home_path; |
ab38c13f DG |
4029 | const char *sys_path; |
4030 | ||
dcf266c0 | 4031 | /* Try home path */ |
ab38c13f | 4032 | home_path = utils_get_home_dir(); |
dcf266c0 | 4033 | if (home_path) { |
db8196db | 4034 | char path_buf[PATH_MAX]; |
dcf266c0 | 4035 | |
d4fcf703 DG |
4036 | /* |
4037 | * Try user session configuration path. Ignore error here so we can | |
4038 | * continue loading the system wide sessions. | |
4039 | */ | |
ab38c13f | 4040 | if (autoload) { |
db8196db SM |
4041 | ret = snprintf(path_buf, sizeof(path_buf), |
4042 | DEFAULT_SESSION_HOME_CONFIGPATH | |
4043 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
4044 | home_path); | |
cf53c06d DG |
4045 | if (ret < 0) { |
4046 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 4047 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4048 | goto end; |
4049 | } | |
4050 | ||
4051 | /* | |
4052 | * Credentials are only validated for the autoload in order to | |
4053 | * avoid any user session daemon to try to load kernel sessions | |
4054 | * automatically and failing all the times. | |
4055 | */ | |
db8196db | 4056 | ret = validate_path_creds(path_buf); |
cf53c06d | 4057 | if (ret) { |
db8196db | 4058 | path_ptr = path_buf; |
cf53c06d | 4059 | } |
ab38c13f | 4060 | } else { |
db8196db SM |
4061 | ret = snprintf(path_buf, sizeof(path_buf), |
4062 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
4063 | home_path); | |
cf53c06d DG |
4064 | if (ret < 0) { |
4065 | PERROR("snprintf session home config path"); | |
55c9e7ca | 4066 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4067 | goto end; |
4068 | } | |
db8196db | 4069 | path_ptr = path_buf; |
ab38c13f | 4070 | } |
cf53c06d DG |
4071 | if (path_ptr) { |
4072 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4073 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
4074 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4075 | goto end; | |
4076 | } | |
4077 | /* | |
4078 | * Continue even if the session was found since we have to try | |
4079 | * the system wide sessions. | |
4080 | */ | |
6c66fa0f | 4081 | session_loaded = true; |
ab38c13f | 4082 | } |
d4fcf703 | 4083 | } |
ab38c13f | 4084 | |
cf53c06d DG |
4085 | /* Reset path pointer for the system wide dir. */ |
4086 | path_ptr = NULL; | |
4087 | ||
d4fcf703 DG |
4088 | /* Try system wide configuration directory. */ |
4089 | if (autoload) { | |
4090 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
4091 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
4092 | ret = validate_path_creds(sys_path); |
4093 | if (ret) { | |
4094 | path_ptr = sys_path; | |
4095 | } | |
d4fcf703 | 4096 | } else { |
cf53c06d DG |
4097 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
4098 | path_ptr = sys_path; | |
d4fcf703 DG |
4099 | } |
4100 | ||
cf53c06d DG |
4101 | if (path_ptr) { |
4102 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4103 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
4104 | if (!ret) { |
4105 | session_loaded = true; | |
4106 | } | |
55c9e7ca JR |
4107 | } else { |
4108 | ret = 0; | |
dcf266c0 JG |
4109 | } |
4110 | } else { | |
4111 | ret = access(path, F_OK); | |
4112 | if (ret < 0) { | |
4113 | PERROR("access"); | |
4114 | switch (errno) { | |
4115 | case ENOENT: | |
4116 | ret = -LTTNG_ERR_INVALID; | |
4117 | WARN("Session configuration path does not exist."); | |
4118 | break; | |
4119 | case EACCES: | |
4120 | ret = -LTTNG_ERR_EPERM; | |
4121 | break; | |
4122 | default: | |
4123 | ret = -LTTNG_ERR_UNK; | |
4124 | break; | |
4125 | } | |
4126 | goto end; | |
4127 | } | |
4128 | ||
4129 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 4130 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4131 | } |
4132 | end: | |
4133 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
4134 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
4135 | /* | |
4136 | * Don't report an error if no sessions are found when called | |
4137 | * without a session_name or a search path. | |
4138 | */ | |
4139 | ret = 0; | |
4140 | } | |
6c66fa0f JG |
4141 | |
4142 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
4143 | /* A matching session was found in one of the search paths. */ | |
4144 | ret = 0; | |
4145 | } | |
dcf266c0 JG |
4146 | return ret; |
4147 | } | |
56766c75 JG |
4148 | |
4149 | static | |
4150 | void __attribute__((destructor)) session_config_exit(void) | |
4151 | { | |
4152 | xmlCleanupParser(); | |
4153 | } |