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"; |
3afa94ae SM |
55 | LTTNG_EXPORT const char *config_str_yes = "yes"; |
56 | LTTNG_EXPORT const char *config_str_true = "true"; | |
57 | LTTNG_EXPORT const char *config_str_on = "on"; | |
58 | LTTNG_EXPORT const char *config_str_no = "no"; | |
59 | LTTNG_EXPORT const char *config_str_false = "false"; | |
60 | LTTNG_EXPORT const char *config_str_off = "off"; | |
61 | LTTNG_EXPORT const char *config_xml_encoding = "UTF-8"; | |
62 | LTTNG_EXPORT size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ | |
63 | LTTNG_EXPORT const char *config_xml_indent_string = "\t"; | |
64 | LTTNG_EXPORT const char *config_xml_true = "true"; | |
65 | LTTNG_EXPORT const char *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"; | |
ca806b0b SM |
160 | const char * const config_element_tracker_pid_legacy = "pid"; |
161 | ||
162 | const char * const config_element_rotation_schedules = "rotation_schedules"; | |
163 | const char * const config_element_rotation_schedule_periodic = "periodic"; | |
164 | const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
165 | const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
166 | const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 167 | |
fb198a11 JG |
168 | const char * const config_domain_type_kernel = "KERNEL"; |
169 | const char * const config_domain_type_ust = "UST"; | |
170 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 171 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 172 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
173 | |
174 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
175 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
176 | const char * const config_buffer_type_global = "GLOBAL"; | |
177 | ||
178 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
179 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
180 | ||
181 | const char * const config_output_type_splice = "SPLICE"; | |
182 | const char * const config_output_type_mmap = "MMAP"; | |
183 | ||
184 | const char * const config_loglevel_type_all = "ALL"; | |
185 | const char * const config_loglevel_type_range = "RANGE"; | |
186 | const char * const config_loglevel_type_single = "SINGLE"; | |
187 | ||
188 | const char * const config_event_type_all = "ALL"; | |
189 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
190 | const char * const config_event_type_probe = "PROBE"; | |
ca806b0b | 191 | const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
192 | const char * const config_event_type_function = "FUNCTION"; |
193 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
194 | const char * const config_event_type_noop = "NOOP"; | |
195 | const char * const config_event_type_syscall = "SYSCALL"; | |
196 | const char * const config_event_type_kprobe = "KPROBE"; | |
197 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
198 | ||
199 | const char * const config_event_context_pid = "PID"; | |
200 | const char * const config_event_context_procname = "PROCNAME"; | |
201 | const char * const config_event_context_prio = "PRIO"; | |
202 | const char * const config_event_context_nice = "NICE"; | |
203 | const char * const config_event_context_vpid = "VPID"; | |
204 | const char * const config_event_context_tid = "TID"; | |
205 | const char * const config_event_context_vtid = "VTID"; | |
206 | const char * const config_event_context_ppid = "PPID"; | |
207 | const char * const config_event_context_vppid = "VPPID"; | |
208 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
209 | const char * const config_event_context_hostname = "HOSTNAME"; | |
210 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 211 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ca806b0b SM |
212 | const char * const config_event_context_app = "APP"; |
213 | const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
214 | const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
215 | const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
216 | const char * const config_event_context_migratable = "MIGRATABLE"; | |
217 | const char * const config_event_context_callstack_user= "CALLSTACK_USER"; | |
218 | const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
219 | const char * const config_event_context_cgroup_ns = "CGROUP_NS"; | |
220 | const char * const config_event_context_ipc_ns = "IPC_NS"; | |
221 | const char * const config_event_context_mnt_ns = "MNT_NS"; | |
222 | const char * const config_event_context_net_ns = "NET_NS"; | |
223 | const char * const config_event_context_pid_ns = "PID_NS"; | |
224 | const char * const config_event_context_time_ns = "TIME_NS"; | |
225 | const char * const config_event_context_user_ns = "USER_NS"; | |
226 | const char * const config_event_context_uts_ns = "UTS_NS"; | |
227 | const char * const config_event_context_uid = "UID"; | |
228 | const char * const config_event_context_euid = "EUID"; | |
229 | const char * const config_event_context_suid = "SUID"; | |
230 | const char * const config_event_context_gid = "GID"; | |
231 | const char * const config_event_context_egid = "EGID"; | |
232 | const char * const config_event_context_sgid = "SGID"; | |
233 | const char * const config_event_context_vuid = "VUID"; | |
234 | const char * const config_event_context_veuid = "VEUID"; | |
235 | const char * const config_event_context_vsuid = "VSUID"; | |
236 | const char * const config_event_context_vgid = "VGID"; | |
237 | const char * const config_event_context_vegid = "VEGID"; | |
238 | const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 239 | |
fbd987c9 | 240 | /* Deprecated symbols */ |
3afa94ae | 241 | LTTNG_EXPORT const char *config_element_perf; |
fbd987c9 | 242 | |
d7b645e2 JR |
243 | enum process_event_node_phase { |
244 | CREATION = 0, | |
245 | ENABLE = 1, | |
246 | }; | |
247 | ||
dcf266c0 JG |
248 | struct consumer_output { |
249 | int enabled; | |
250 | char *path; | |
251 | char *control_uri; | |
252 | char *data_uri; | |
253 | }; | |
254 | ||
1501a7f3 JG |
255 | static int config_entry_handler_filter(struct handler_filter_args *args, |
256 | const char *section, const char *name, const char *value) | |
257 | { | |
258 | int ret = 0; | |
259 | struct config_entry entry = { section, name, value }; | |
260 | ||
a0377dfe | 261 | LTTNG_ASSERT(args); |
1501a7f3 JG |
262 | |
263 | if (!section || !name || !value) { | |
264 | ret = -EIO; | |
265 | goto end; | |
266 | } | |
267 | ||
268 | if (args->section) { | |
269 | if (strcmp(args->section, section)) { | |
270 | goto end; | |
271 | } | |
272 | } | |
273 | ||
274 | ret = args->handler(&entry, args->user_data); | |
275 | end: | |
276 | return ret; | |
277 | } | |
278 | ||
1501a7f3 JG |
279 | int config_get_section_entries(const char *override_path, const char *section, |
280 | config_entry_handler_cb handler, void *user_data) | |
281 | { | |
282 | int ret = 0; | |
4f00620d | 283 | const char *path; |
1501a7f3 JG |
284 | FILE *config_file = NULL; |
285 | struct handler_filter_args filter = { section, handler, user_data }; | |
286 | ||
7ab02a27 DG |
287 | /* First, try system-wide conf. file. */ |
288 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
289 | ||
290 | config_file = fopen(path, "r"); | |
291 | if (config_file) { | |
292 | DBG("Loading daemon conf file at %s", path); | |
293 | /* | |
294 | * Return value is not very important here since error or not, we | |
295 | * continue and try the next possible conf. file. | |
296 | */ | |
297 | (void) ini_parse_file(config_file, | |
298 | (ini_entry_handler) config_entry_handler_filter, | |
299 | (void *) &filter); | |
300 | fclose(config_file); | |
301 | } | |
302 | ||
303 | /* Second is the user local configuration. */ | |
304 | path = utils_get_home_dir(); | |
305 | if (path) { | |
306 | char fullpath[PATH_MAX]; | |
307 | ||
308 | ret = snprintf(fullpath, sizeof(fullpath), | |
309 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
310 | if (ret < 0) { | |
311 | PERROR("snprintf user conf. path"); | |
312 | goto error; | |
313 | } | |
314 | ||
315 | config_file = fopen(fullpath, "r"); | |
316 | if (config_file) { | |
317 | DBG("Loading daemon user conf file at %s", path); | |
318 | /* | |
319 | * Return value is not very important here since error or not, we | |
320 | * continue and try the next possible conf. file. | |
321 | */ | |
322 | (void) ini_parse_file(config_file, | |
323 | (ini_entry_handler) config_entry_handler_filter, | |
324 | (void *) &filter); | |
325 | fclose(config_file); | |
326 | } | |
327 | } | |
328 | ||
329 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
330 | if (override_path) { |
331 | config_file = fopen(override_path, "r"); | |
332 | if (config_file) { | |
7ab02a27 DG |
333 | DBG("Loading daemon command line conf file at %s", override_path); |
334 | (void) ini_parse_file(config_file, | |
335 | (ini_entry_handler) config_entry_handler_filter, | |
336 | (void *) &filter); | |
337 | fclose(config_file); | |
1501a7f3 JG |
338 | } else { |
339 | ERR("Failed to open daemon configuration file at %s", | |
340 | override_path); | |
341 | ret = -ENOENT; | |
7ab02a27 | 342 | goto error; |
1501a7f3 JG |
343 | } |
344 | } | |
345 | ||
7ab02a27 DG |
346 | /* Everything went well. */ |
347 | ret = 0; | |
1501a7f3 | 348 | |
7ab02a27 | 349 | error: |
1501a7f3 JG |
350 | return ret; |
351 | } | |
352 | ||
1501a7f3 JG |
353 | int config_parse_value(const char *value) |
354 | { | |
355 | int i, ret = 0; | |
356 | char *endptr, *lower_str; | |
357 | size_t len; | |
358 | unsigned long v; | |
359 | ||
360 | len = strlen(value); | |
361 | if (!len) { | |
362 | ret = -1; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | v = strtoul(value, &endptr, 10); | |
367 | if (endptr != value) { | |
368 | ret = v; | |
369 | goto end; | |
370 | } | |
371 | ||
3afa94ae | 372 | lower_str = (char *) zmalloc(len + 1); |
1501a7f3 JG |
373 | if (!lower_str) { |
374 | PERROR("zmalloc"); | |
375 | ret = -errno; | |
376 | goto end; | |
377 | } | |
378 | ||
379 | for (i = 0; i < len; i++) { | |
380 | lower_str[i] = tolower(value[i]); | |
381 | } | |
382 | ||
383 | if (!strcmp(lower_str, config_str_yes) || | |
384 | !strcmp(lower_str, config_str_true) || | |
385 | !strcmp(lower_str, config_str_on)) { | |
386 | ret = 1; | |
387 | } else if (!strcmp(lower_str, config_str_no) || | |
388 | !strcmp(lower_str, config_str_false) || | |
389 | !strcmp(lower_str, config_str_off)) { | |
390 | ret = 0; | |
391 | } else { | |
392 | ret = -1; | |
393 | } | |
394 | ||
395 | free(lower_str); | |
396 | end: | |
397 | return ret; | |
398 | } | |
36f2332b JG |
399 | |
400 | /* | |
401 | * Returns a xmlChar string which must be released using xmlFree(). | |
402 | */ | |
403 | static xmlChar *encode_string(const char *in_str) | |
404 | { | |
405 | xmlChar *out_str = NULL; | |
406 | xmlCharEncodingHandlerPtr handler; | |
407 | int out_len, ret, in_len; | |
408 | ||
a0377dfe | 409 | LTTNG_ASSERT(in_str); |
36f2332b JG |
410 | |
411 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
412 | if (!handler) { | |
413 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
414 | goto end; | |
415 | } | |
416 | ||
417 | in_len = strlen(in_str); | |
418 | /* | |
f76d886f JG |
419 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
420 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 421 | */ |
f76d886f | 422 | out_len = (in_len * 4) + 1; |
3afa94ae | 423 | out_str = (xmlChar *) xmlMalloc(out_len); |
36f2332b JG |
424 | if (!out_str) { |
425 | goto end; | |
426 | } | |
427 | ||
428 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
429 | if (ret < 0) { | |
430 | xmlFree(out_str); | |
431 | out_str = NULL; | |
432 | goto end; | |
433 | } | |
434 | ||
435 | /* out_len is now the size of out_str */ | |
436 | out_str[out_len] = '\0'; | |
437 | end: | |
438 | return out_str; | |
439 | } | |
440 | ||
705bb62f | 441 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
442 | { |
443 | int ret; | |
444 | struct config_writer *writer; | |
445 | xmlOutputBufferPtr buffer; | |
446 | ||
3afa94ae | 447 | writer = (config_writer *) zmalloc(sizeof(struct config_writer)); |
36f2332b JG |
448 | if (!writer) { |
449 | PERROR("zmalloc config_writer_create"); | |
450 | goto end; | |
451 | } | |
452 | ||
453 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
454 | if (!buffer) { | |
455 | goto error_destroy; | |
456 | } | |
457 | ||
458 | writer->writer = xmlNewTextWriter(buffer); | |
459 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
460 | config_xml_encoding, NULL); | |
461 | if (ret < 0) { | |
462 | goto error_destroy; | |
463 | } | |
464 | ||
465 | ret = xmlTextWriterSetIndentString(writer->writer, | |
466 | BAD_CAST config_xml_indent_string); | |
705bb62f | 467 | if (ret) { |
36f2332b JG |
468 | goto error_destroy; |
469 | } | |
470 | ||
705bb62f JRJ |
471 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
472 | if (ret) { | |
36f2332b JG |
473 | goto error_destroy; |
474 | } | |
475 | ||
476 | end: | |
477 | return writer; | |
478 | error_destroy: | |
479 | config_writer_destroy(writer); | |
480 | return NULL; | |
481 | } | |
482 | ||
36f2332b JG |
483 | int config_writer_destroy(struct config_writer *writer) |
484 | { | |
485 | int ret = 0; | |
486 | ||
487 | if (!writer) { | |
488 | ret = -EINVAL; | |
489 | goto end; | |
490 | } | |
491 | ||
492 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
493 | WARN("Could not close XML document"); | |
494 | ret = -EIO; | |
495 | } | |
496 | ||
497 | if (writer->writer) { | |
498 | xmlFreeTextWriter(writer->writer); | |
499 | } | |
500 | ||
501 | free(writer); | |
502 | end: | |
503 | return ret; | |
504 | } | |
505 | ||
36f2332b JG |
506 | int config_writer_open_element(struct config_writer *writer, |
507 | const char *element_name) | |
508 | { | |
509 | int ret; | |
510 | xmlChar *encoded_element_name; | |
511 | ||
512 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
513 | ret = -1; | |
514 | goto end; | |
515 | } | |
516 | ||
517 | encoded_element_name = encode_string(element_name); | |
518 | if (!encoded_element_name) { | |
519 | ret = -1; | |
520 | goto end; | |
521 | } | |
522 | ||
523 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
524 | xmlFree(encoded_element_name); | |
525 | end: | |
28676a1d | 526 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
527 | } |
528 | ||
e10b6a1c JG |
529 | int config_writer_write_attribute(struct config_writer *writer, |
530 | const char *name, const char *value) | |
531 | { | |
532 | int ret; | |
533 | xmlChar *encoded_name = NULL; | |
534 | xmlChar *encoded_value = NULL; | |
535 | ||
536 | if (!writer || !writer->writer || !name || !name[0]) { | |
537 | ret = -1; | |
538 | goto end; | |
539 | } | |
540 | ||
541 | encoded_name = encode_string(name); | |
542 | if (!encoded_name) { | |
543 | ret = -1; | |
544 | goto end; | |
545 | } | |
546 | ||
547 | encoded_value = encode_string(value); | |
548 | if (!encoded_value) { | |
549 | ret = -1; | |
550 | goto end; | |
551 | } | |
552 | ||
553 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
554 | encoded_value); | |
555 | end: | |
556 | xmlFree(encoded_name); | |
557 | xmlFree(encoded_value); | |
558 | return ret >= 0 ? 0 : ret; | |
559 | } | |
560 | ||
36f2332b JG |
561 | int config_writer_close_element(struct config_writer *writer) |
562 | { | |
563 | int ret; | |
564 | ||
565 | if (!writer || !writer->writer) { | |
566 | ret = -1; | |
567 | goto end; | |
568 | } | |
569 | ||
570 | ret = xmlTextWriterEndElement(writer->writer); | |
571 | end: | |
28676a1d | 572 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
573 | } |
574 | ||
36f2332b JG |
575 | int config_writer_write_element_unsigned_int(struct config_writer *writer, |
576 | const char *element_name, uint64_t value) | |
577 | { | |
578 | int ret; | |
579 | xmlChar *encoded_element_name; | |
580 | ||
581 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
582 | ret = -1; | |
583 | goto end; | |
584 | } | |
585 | ||
586 | encoded_element_name = encode_string(element_name); | |
587 | if (!encoded_element_name) { | |
588 | ret = -1; | |
589 | goto end; | |
590 | } | |
591 | ||
592 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
593 | encoded_element_name, "%" PRIu64, value); | |
594 | xmlFree(encoded_element_name); | |
595 | end: | |
28676a1d | 596 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
597 | } |
598 | ||
36f2332b JG |
599 | int config_writer_write_element_signed_int(struct config_writer *writer, |
600 | const char *element_name, int64_t value) | |
601 | { | |
602 | int ret; | |
603 | xmlChar *encoded_element_name; | |
604 | ||
605 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
606 | ret = -1; | |
607 | goto end; | |
608 | } | |
609 | ||
610 | encoded_element_name = encode_string(element_name); | |
611 | if (!encoded_element_name) { | |
612 | ret = -1; | |
613 | goto end; | |
614 | } | |
615 | ||
616 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
617 | encoded_element_name, "%" PRIi64, value); | |
618 | xmlFree(encoded_element_name); | |
619 | end: | |
28676a1d | 620 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
621 | } |
622 | ||
36f2332b JG |
623 | int config_writer_write_element_bool(struct config_writer *writer, |
624 | const char *element_name, int value) | |
625 | { | |
626 | return config_writer_write_element_string(writer, element_name, | |
627 | value ? config_xml_true : config_xml_false); | |
628 | } | |
629 | ||
2b166400 JR |
630 | int config_writer_write_element_double(struct config_writer *writer, |
631 | const char *element_name, | |
632 | double value) | |
633 | { | |
634 | int ret; | |
635 | xmlChar *encoded_element_name; | |
636 | ||
637 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
638 | ret = -1; | |
639 | goto end; | |
640 | } | |
641 | ||
642 | encoded_element_name = encode_string(element_name); | |
643 | if (!encoded_element_name) { | |
644 | ret = -1; | |
645 | goto end; | |
646 | } | |
647 | ||
648 | ret = xmlTextWriterWriteFormatElement( | |
649 | writer->writer, encoded_element_name, "%f", value); | |
650 | xmlFree(encoded_element_name); | |
651 | end: | |
652 | return ret >= 0 ? 0 : ret; | |
653 | } | |
654 | ||
36f2332b JG |
655 | int config_writer_write_element_string(struct config_writer *writer, |
656 | const char *element_name, const char *value) | |
657 | { | |
658 | int ret; | |
659 | xmlChar *encoded_element_name = NULL; | |
660 | xmlChar *encoded_value = NULL; | |
661 | ||
662 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
663 | !value) { | |
664 | ret = -1; | |
665 | goto end; | |
666 | } | |
667 | ||
668 | encoded_element_name = encode_string(element_name); | |
669 | if (!encoded_element_name) { | |
670 | ret = -1; | |
671 | goto end; | |
672 | } | |
673 | ||
674 | encoded_value = encode_string(value); | |
675 | if (!encoded_value) { | |
676 | ret = -1; | |
677 | goto end; | |
678 | } | |
679 | ||
680 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 681 | encoded_value); |
36f2332b JG |
682 | end: |
683 | xmlFree(encoded_element_name); | |
684 | xmlFree(encoded_value); | |
28676a1d | 685 | return ret >= 0 ? 0 : ret; |
36f2332b | 686 | } |
dcf266c0 JG |
687 | |
688 | static | |
689 | void xml_error_handler(void *ctx, const char *format, ...) | |
690 | { | |
691 | char *errMsg; | |
692 | va_list args; | |
693 | int ret; | |
694 | ||
695 | va_start(args, format); | |
696 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 697 | va_end(args); |
dcf266c0 JG |
698 | if (ret == -1) { |
699 | ERR("String allocation failed in xml error handler"); | |
700 | return; | |
701 | } | |
dcf266c0 JG |
702 | |
703 | fprintf(stderr, "XML Error: %s", errMsg); | |
704 | free(errMsg); | |
705 | } | |
706 | ||
707 | static | |
708 | void fini_session_config_validation_ctx( | |
709 | struct session_config_validation_ctx *ctx) | |
710 | { | |
711 | if (ctx->parser_ctx) { | |
712 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
713 | } | |
714 | ||
715 | if (ctx->schema) { | |
716 | xmlSchemaFree(ctx->schema); | |
717 | } | |
718 | ||
719 | if (ctx->schema_validation_ctx) { | |
720 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
721 | } | |
722 | ||
723 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
724 | } | |
725 | ||
54e399cb | 726 | static |
a3ecaea8 | 727 | char *get_session_config_xsd_path(void) |
54e399cb JG |
728 | { |
729 | char *xsd_path; | |
e8fa9fb0 | 730 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
731 | size_t base_path_len; |
732 | size_t max_path_len; | |
733 | ||
734 | if (!base_path) { | |
735 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
736 | } | |
737 | ||
738 | base_path_len = strlen(base_path); | |
739 | max_path_len = base_path_len + | |
740 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
3afa94ae | 741 | xsd_path = (char *) zmalloc(max_path_len); |
54e399cb JG |
742 | if (!xsd_path) { |
743 | goto end; | |
744 | } | |
745 | ||
00a7f6f8 | 746 | strcpy(xsd_path, base_path); |
54e399cb JG |
747 | if (xsd_path[base_path_len - 1] != '/') { |
748 | xsd_path[base_path_len++] = '/'; | |
749 | } | |
750 | ||
00a7f6f8 | 751 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
752 | end: |
753 | return xsd_path; | |
754 | } | |
755 | ||
dcf266c0 JG |
756 | static |
757 | int init_session_config_validation_ctx( | |
758 | struct session_config_validation_ctx *ctx) | |
759 | { | |
760 | int ret; | |
54e399cb JG |
761 | char *xsd_path = get_session_config_xsd_path(); |
762 | ||
763 | if (!xsd_path) { | |
764 | ret = -LTTNG_ERR_NOMEM; | |
765 | goto end; | |
766 | } | |
dcf266c0 | 767 | |
54e399cb | 768 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
769 | if (!ctx->parser_ctx) { |
770 | ERR("XSD parser context creation failed"); | |
771 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
772 | goto end; | |
773 | } | |
774 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
775 | xml_error_handler, NULL); | |
776 | ||
777 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
778 | if (!ctx->schema) { | |
779 | ERR("XSD parsing failed"); | |
780 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
781 | goto end; | |
782 | } | |
783 | ||
784 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
785 | if (!ctx->schema_validation_ctx) { | |
786 | ERR("XSD validation context creation failed"); | |
787 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
788 | goto end; | |
789 | } | |
790 | ||
791 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
792 | xml_error_handler, NULL); | |
793 | ret = 0; | |
794 | ||
795 | end: | |
796 | if (ret) { | |
797 | fini_session_config_validation_ctx(ctx); | |
798 | } | |
799 | ||
54e399cb | 800 | free(xsd_path); |
dcf266c0 JG |
801 | return ret; |
802 | } | |
803 | ||
804 | static | |
805 | int parse_uint(xmlChar *str, uint64_t *val) | |
806 | { | |
807 | int ret; | |
808 | char *endptr; | |
809 | ||
810 | if (!str || !val) { | |
811 | ret = -1; | |
812 | goto end; | |
813 | } | |
814 | ||
815 | *val = strtoull((const char *) str, &endptr, 10); | |
816 | if (!endptr || *endptr) { | |
817 | ret = -1; | |
818 | } else { | |
819 | ret = 0; | |
820 | } | |
821 | ||
822 | end: | |
823 | return ret; | |
824 | } | |
825 | ||
826 | static | |
827 | int parse_int(xmlChar *str, int64_t *val) | |
828 | { | |
829 | int ret; | |
830 | char *endptr; | |
831 | ||
832 | if (!str || !val) { | |
833 | ret = -1; | |
834 | goto end; | |
835 | } | |
836 | ||
837 | *val = strtoll((const char *) str, &endptr, 10); | |
838 | if (!endptr || *endptr) { | |
839 | ret = -1; | |
840 | } else { | |
841 | ret = 0; | |
842 | } | |
843 | ||
844 | end: | |
845 | return ret; | |
846 | } | |
847 | ||
848 | static | |
849 | int parse_bool(xmlChar *str, int *val) | |
850 | { | |
851 | int ret = 0; | |
852 | ||
853 | if (!str || !val) { | |
854 | ret = -1; | |
855 | goto end; | |
856 | } | |
857 | ||
47945b17 SM |
858 | if (!strcmp((const char *) str, config_xml_true) || |
859 | !strcmp((const char *) str, "1")) { | |
dcf266c0 | 860 | *val = 1; |
47945b17 SM |
861 | } else if (!strcmp((const char *) str, config_xml_false) || |
862 | !strcmp((const char *) str, "0")) { | |
dcf266c0 JG |
863 | *val = 0; |
864 | } else { | |
a22a57cb | 865 | WARN("Invalid boolean value encountered (%s).", |
dcf266c0 JG |
866 | (const char *) str); |
867 | ret = -1; | |
868 | } | |
869 | end: | |
870 | return ret; | |
871 | } | |
872 | ||
873 | static | |
874 | int get_domain_type(xmlChar *domain) | |
875 | { | |
876 | int ret; | |
877 | ||
878 | if (!domain) { | |
879 | goto error; | |
880 | } | |
881 | ||
882 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
883 | ret = LTTNG_DOMAIN_KERNEL; | |
884 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
885 | ret = LTTNG_DOMAIN_UST; | |
886 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
887 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
888 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
889 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
890 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
891 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
892 | } else { |
893 | goto error; | |
894 | } | |
895 | ||
896 | return ret; | |
897 | error: | |
898 | return -1; | |
899 | } | |
900 | ||
901 | static | |
902 | int get_buffer_type(xmlChar *buffer_type) | |
903 | { | |
904 | int ret; | |
905 | ||
906 | if (!buffer_type) { | |
907 | goto error; | |
908 | } | |
909 | ||
910 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
911 | ret = LTTNG_BUFFER_GLOBAL; | |
912 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
913 | ret = LTTNG_BUFFER_PER_UID; | |
914 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
915 | ret = LTTNG_BUFFER_PER_PID; | |
916 | } else { | |
917 | goto error; | |
918 | } | |
919 | ||
920 | return ret; | |
921 | error: | |
922 | return -1; | |
923 | } | |
924 | ||
925 | static | |
926 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
927 | { | |
928 | int ret; | |
929 | ||
930 | if (!overwrite_mode) { | |
931 | goto error; | |
932 | } | |
933 | ||
934 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
935 | ret = 1; | |
936 | } else if (!strcmp((char *) overwrite_mode, | |
937 | config_overwrite_mode_discard)) { | |
938 | ret = 0; | |
939 | } else { | |
940 | goto error; | |
941 | } | |
942 | ||
943 | return ret; | |
944 | error: | |
945 | return -1; | |
946 | } | |
947 | ||
948 | static | |
949 | int get_output_type(xmlChar *output_type) | |
950 | { | |
951 | int ret; | |
952 | ||
953 | if (!output_type) { | |
954 | goto error; | |
955 | } | |
956 | ||
957 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
958 | ret = LTTNG_EVENT_MMAP; | |
959 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
960 | ret = LTTNG_EVENT_SPLICE; | |
961 | } else { | |
962 | goto error; | |
963 | } | |
964 | ||
965 | return ret; | |
966 | error: | |
967 | return -1; | |
968 | } | |
969 | ||
970 | static | |
971 | int get_event_type(xmlChar *event_type) | |
972 | { | |
973 | int ret; | |
974 | ||
975 | if (!event_type) { | |
976 | goto error; | |
977 | } | |
978 | ||
979 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
980 | ret = LTTNG_EVENT_ALL; | |
981 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
982 | ret = LTTNG_EVENT_TRACEPOINT; | |
983 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
984 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
985 | } else if (!strcmp((char *) event_type, |
986 | config_event_type_userspace_probe)) { | |
987 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
988 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
989 | ret = LTTNG_EVENT_FUNCTION; | |
990 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 991 | config_event_type_function_entry)) { |
dcf266c0 JG |
992 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
993 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
994 | ret = LTTNG_EVENT_NOOP; | |
995 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
996 | ret = LTTNG_EVENT_SYSCALL; | |
997 | } else { | |
998 | goto error; | |
999 | } | |
1000 | ||
1001 | return ret; | |
1002 | error: | |
1003 | return -1; | |
1004 | } | |
1005 | ||
1006 | static | |
1007 | int get_loglevel_type(xmlChar *loglevel_type) | |
1008 | { | |
1009 | int ret; | |
1010 | ||
1011 | if (!loglevel_type) { | |
1012 | goto error; | |
1013 | } | |
1014 | ||
1015 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1016 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1017 | } else if (!strcmp((char *) loglevel_type, | |
1018 | config_loglevel_type_range)) { | |
1019 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1020 | } else if (!strcmp((char *) loglevel_type, | |
1021 | config_loglevel_type_single)) { | |
1022 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1023 | } else { | |
1024 | goto error; | |
1025 | } | |
1026 | ||
1027 | return ret; | |
1028 | error: | |
1029 | return -1; | |
1030 | } | |
1031 | ||
1032 | /* | |
1033 | * Return the context type or -1 on error. | |
1034 | */ | |
1035 | static | |
1036 | int get_context_type(xmlChar *context_type) | |
1037 | { | |
1038 | int ret; | |
1039 | ||
1040 | if (!context_type) { | |
1041 | goto error; | |
1042 | } | |
1043 | ||
1044 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1045 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1046 | } else if (!strcmp((char *) context_type, | |
1047 | config_event_context_procname)) { | |
1048 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1049 | } else if (!strcmp((char *) context_type, | |
1050 | config_event_context_prio)) { | |
1051 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1052 | } else if (!strcmp((char *) context_type, | |
1053 | config_event_context_nice)) { | |
1054 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1055 | } else if (!strcmp((char *) context_type, | |
1056 | config_event_context_vpid)) { | |
1057 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1058 | } else if (!strcmp((char *) context_type, | |
1059 | config_event_context_tid)) { | |
1060 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1061 | } else if (!strcmp((char *) context_type, | |
1062 | config_event_context_vtid)) { | |
1063 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1064 | } else if (!strcmp((char *) context_type, | |
1065 | config_event_context_ppid)) { | |
1066 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1067 | } else if (!strcmp((char *) context_type, | |
1068 | config_event_context_vppid)) { | |
1069 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1070 | } else if (!strcmp((char *) context_type, | |
1071 | config_event_context_pthread_id)) { | |
1072 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1073 | } else if (!strcmp((char *) context_type, | |
1074 | config_event_context_hostname)) { | |
1075 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1076 | } else if (!strcmp((char *) context_type, | |
1077 | config_event_context_ip)) { | |
1078 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1079 | } else if (!strcmp((char *) context_type, |
1080 | config_event_context_interruptible)) { | |
1081 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1082 | } else if (!strcmp((char *) context_type, | |
1083 | config_event_context_preemptible)) { | |
1084 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1085 | } else if (!strcmp((char *) context_type, | |
1086 | config_event_context_need_reschedule)) { | |
1087 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1088 | } else if (!strcmp((char *) context_type, | |
1089 | config_event_context_migratable)) { | |
1090 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1091 | } else if (!strcmp((char *) context_type, |
1092 | config_event_context_callstack_user)) { | |
1093 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1094 | } else if (!strcmp((char *) context_type, | |
1095 | config_event_context_callstack_kernel)) { | |
1096 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1097 | } else if (!strcmp((char *) context_type, |
1098 | config_event_context_cgroup_ns)) { | |
1099 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1100 | } else if (!strcmp((char *) context_type, | |
1101 | config_event_context_ipc_ns)) { | |
1102 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1103 | } else if (!strcmp((char *) context_type, | |
1104 | config_event_context_mnt_ns)) { | |
1105 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1106 | } else if (!strcmp((char *) context_type, | |
1107 | config_event_context_net_ns)) { | |
1108 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1109 | } else if (!strcmp((char *) context_type, | |
1110 | config_event_context_pid_ns)) { | |
1111 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
1112 | } else if (!strcmp((char *) context_type, |
1113 | config_event_context_time_ns)) { | |
1114 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
1115 | } else if (!strcmp((char *) context_type, |
1116 | config_event_context_user_ns)) { | |
1117 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1118 | } else if (!strcmp((char *) context_type, | |
1119 | config_event_context_uts_ns)) { | |
1120 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1121 | } else if (!strcmp((char *) context_type, |
1122 | config_event_context_uid)) { | |
1123 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1124 | } else if (!strcmp((char *) context_type, | |
1125 | config_event_context_euid)) { | |
1126 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1127 | } else if (!strcmp((char *) context_type, | |
1128 | config_event_context_suid)) { | |
1129 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1130 | } else if (!strcmp((char *) context_type, | |
1131 | config_event_context_gid)) { | |
1132 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1133 | } else if (!strcmp((char *) context_type, | |
1134 | config_event_context_egid)) { | |
1135 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1136 | } else if (!strcmp((char *) context_type, | |
1137 | config_event_context_sgid)) { | |
1138 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1139 | } else if (!strcmp((char *) context_type, | |
1140 | config_event_context_vuid)) { | |
1141 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1142 | } else if (!strcmp((char *) context_type, | |
1143 | config_event_context_veuid)) { | |
1144 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1145 | } else if (!strcmp((char *) context_type, | |
1146 | config_event_context_vsuid)) { | |
1147 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1148 | } else if (!strcmp((char *) context_type, | |
1149 | config_event_context_vgid)) { | |
1150 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1151 | } else if (!strcmp((char *) context_type, | |
1152 | config_event_context_vegid)) { | |
1153 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1154 | } else if (!strcmp((char *) context_type, | |
1155 | config_event_context_vsgid)) { | |
1156 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1157 | } else { |
1158 | goto error; | |
1159 | } | |
1160 | ||
1161 | return ret; | |
1162 | error: | |
1163 | return -1; | |
1164 | } | |
1165 | ||
1166 | static | |
1167 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1168 | { | |
1169 | int ret; | |
1170 | xmlNodePtr node; | |
1171 | ||
1172 | for (node = xmlFirstElementChild(domain_node); node; | |
1173 | node = xmlNextElementSibling(node)) { | |
1174 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1175 | /* domain type */ | |
1176 | xmlChar *node_content = xmlNodeGetContent(node); | |
1177 | if (!node_content) { | |
1178 | ret = -LTTNG_ERR_NOMEM; | |
1179 | goto end; | |
1180 | } | |
1181 | ||
1182 | ret = get_domain_type(node_content); | |
1183 | free(node_content); | |
1184 | if (ret < 0) { | |
1185 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1186 | goto end; | |
1187 | } | |
1188 | ||
3afa94ae | 1189 | domain->type = (lttng_domain_type) ret; |
dcf266c0 JG |
1190 | } else if (!strcmp((const char *) node->name, |
1191 | config_element_buffer_type)) { | |
1192 | /* buffer type */ | |
1193 | xmlChar *node_content = xmlNodeGetContent(node); | |
1194 | if (!node_content) { | |
1195 | ret = -LTTNG_ERR_NOMEM; | |
1196 | goto end; | |
1197 | } | |
1198 | ||
1199 | ret = get_buffer_type(node_content); | |
1200 | free(node_content); | |
1201 | if (ret < 0) { | |
1202 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1203 | goto end; | |
1204 | } | |
1205 | ||
3afa94ae | 1206 | domain->buf_type = (lttng_buffer_type) ret; |
dcf266c0 JG |
1207 | } |
1208 | } | |
1209 | ret = 0; | |
1210 | end: | |
1211 | return ret; | |
1212 | } | |
1213 | ||
1214 | static | |
1215 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1216 | char **data_uri) | |
1217 | { | |
1218 | xmlNodePtr node; | |
1219 | ||
1220 | for (node = xmlFirstElementChild(net_output_node); node; | |
1221 | node = xmlNextElementSibling(node)) { | |
1222 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1223 | /* control_uri */ | |
1224 | *control_uri = (char *) xmlNodeGetContent(node); | |
1225 | if (!*control_uri) { | |
1226 | break; | |
1227 | } | |
1228 | } else { | |
1229 | /* data_uri */ | |
1230 | *data_uri = (char *) xmlNodeGetContent(node); | |
1231 | if (!*data_uri) { | |
1232 | break; | |
1233 | } | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1238 | } | |
1239 | ||
1240 | static | |
1241 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1242 | struct consumer_output *output) | |
1243 | { | |
1244 | int ret; | |
1245 | xmlNodePtr node; | |
1246 | ||
a0377dfe | 1247 | LTTNG_ASSERT(output); |
dcf266c0 JG |
1248 | |
1249 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1250 | node = xmlNextElementSibling(node)) { | |
1251 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1252 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1253 | ||
1254 | /* enabled */ | |
1255 | if (!enabled_str) { | |
1256 | ret = -LTTNG_ERR_NOMEM; | |
1257 | goto end; | |
1258 | } | |
1259 | ||
1260 | ret = parse_bool(enabled_str, &output->enabled); | |
1261 | free(enabled_str); | |
1262 | if (ret) { | |
1263 | goto end; | |
1264 | } | |
1265 | } else { | |
1266 | xmlNodePtr output_type_node; | |
1267 | ||
1268 | /* destination */ | |
1269 | output_type_node = xmlFirstElementChild(node); | |
1270 | if (!output_type_node) { | |
1271 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1272 | goto end; | |
1273 | } | |
1274 | ||
1275 | if (!strcmp((const char *) output_type_node->name, | |
1276 | config_element_path)) { | |
1277 | /* path */ | |
1278 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1279 | if (!output->path) { | |
1280 | ret = -LTTNG_ERR_NOMEM; | |
1281 | goto end; | |
1282 | } | |
1283 | } else { | |
1284 | /* net_output */ | |
1285 | ret = get_net_output_uris(output_type_node, | |
1286 | &output->control_uri, &output->data_uri); | |
1287 | if (ret) { | |
1288 | goto end; | |
1289 | } | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | ret = 0; | |
1294 | ||
1295 | end: | |
1296 | if (ret) { | |
1297 | free(output->path); | |
1298 | free(output->control_uri); | |
1299 | free(output->data_uri); | |
1300 | memset(output, 0, sizeof(struct consumer_output)); | |
1301 | } | |
1302 | return ret; | |
1303 | } | |
1304 | ||
1305 | static | |
95681498 JG |
1306 | int create_session_net_output(const char *name, const char *control_uri, |
1307 | const char *data_uri) | |
dcf266c0 JG |
1308 | { |
1309 | int ret; | |
1310 | struct lttng_handle *handle; | |
1311 | const char *uri = NULL; | |
1312 | ||
a0377dfe | 1313 | LTTNG_ASSERT(name); |
dcf266c0 | 1314 | |
95681498 | 1315 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1316 | if (!handle) { |
1317 | ret = -LTTNG_ERR_NOMEM; | |
1318 | goto end; | |
1319 | } | |
1320 | ||
1321 | if (!control_uri || !data_uri) { | |
1322 | uri = control_uri ? control_uri : data_uri; | |
1323 | control_uri = uri; | |
1324 | data_uri = uri; | |
1325 | } | |
1326 | ||
1327 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1328 | lttng_destroy_handle(handle); | |
1329 | end: | |
1330 | return ret; | |
1331 | } | |
1332 | ||
1333 | static | |
1b08cbce JR |
1334 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1335 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1336 | { |
1337 | int ret; | |
1338 | xmlNodePtr node = NULL; | |
1339 | xmlNodePtr snapshot_output_list_node; | |
1340 | xmlNodePtr snapshot_output_node; | |
1341 | ||
a0377dfe | 1342 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
1343 | |
1344 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1345 | if (ret) { | |
1346 | goto end; | |
1347 | } | |
1348 | ||
1349 | if (!output_node) { | |
1350 | goto end; | |
1351 | } | |
1352 | ||
1353 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1354 | ||
1355 | /* Parse and create snapshot outputs */ | |
1356 | ||
1357 | for (snapshot_output_node = | |
1358 | xmlFirstElementChild(snapshot_output_list_node); | |
1359 | snapshot_output_node; snapshot_output_node = | |
1360 | xmlNextElementSibling(snapshot_output_node)) { | |
1361 | char *name = NULL; | |
1362 | uint64_t max_size = UINT64_MAX; | |
1363 | struct consumer_output output = { 0 }; | |
1364 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1365 | const char *control_uri = NULL; |
1366 | const char *data_uri = NULL; | |
1367 | const char *path = NULL; | |
dcf266c0 JG |
1368 | |
1369 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1370 | node = xmlNextElementSibling(node)) { | |
1371 | if (!strcmp((const char *) node->name, | |
1372 | config_element_name)) { | |
1373 | /* name */ | |
1374 | name = (char *) xmlNodeGetContent(node); | |
1375 | if (!name) { | |
1376 | ret = -LTTNG_ERR_NOMEM; | |
1377 | goto error_snapshot_output; | |
1378 | } | |
1379 | } else if (!strcmp((const char *) node->name, | |
1380 | config_element_max_size)) { | |
1381 | xmlChar *content = xmlNodeGetContent(node); | |
1382 | ||
1383 | /* max_size */ | |
1384 | if (!content) { | |
1385 | ret = -LTTNG_ERR_NOMEM; | |
1386 | goto error_snapshot_output; | |
1387 | } | |
1388 | ret = parse_uint(content, &max_size); | |
1389 | free(content); | |
1390 | if (ret) { | |
1391 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1392 | goto error_snapshot_output; | |
1393 | } | |
1394 | } else { | |
1395 | /* consumer_output */ | |
1396 | ret = process_consumer_output(node, &output); | |
1397 | if (ret) { | |
1398 | goto error_snapshot_output; | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | ||
21a3f144 JR |
1403 | control_uri = output.control_uri; |
1404 | data_uri = output.data_uri; | |
1405 | path = output.path; | |
1406 | ||
1b08cbce JR |
1407 | if (overrides) { |
1408 | if (overrides->path_url) { | |
1b08cbce | 1409 | path = overrides->path_url; |
21a3f144 JR |
1410 | /* Control/data_uri are null */ |
1411 | control_uri = NULL; | |
1412 | data_uri = NULL; | |
1b08cbce JR |
1413 | } else { |
1414 | if (overrides->ctrl_url) { | |
1b08cbce | 1415 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1416 | /* path is null */ |
1417 | path = NULL; | |
1b08cbce JR |
1418 | } |
1419 | if (overrides->data_url) { | |
1b08cbce | 1420 | data_uri = overrides->data_url; |
21a3f144 JR |
1421 | /* path is null */ |
1422 | path = NULL; | |
1b08cbce JR |
1423 | } |
1424 | } | |
1b08cbce JR |
1425 | } |
1426 | ||
dcf266c0 JG |
1427 | snapshot_output = lttng_snapshot_output_create(); |
1428 | if (!snapshot_output) { | |
1429 | ret = -LTTNG_ERR_NOMEM; | |
1430 | goto error_snapshot_output; | |
1431 | } | |
1432 | ||
1433 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1434 | if (ret) { | |
1435 | goto error_snapshot_output; | |
1436 | } | |
1437 | ||
1438 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1439 | if (ret) { | |
1440 | goto error_snapshot_output; | |
1441 | } | |
1442 | ||
1b08cbce JR |
1443 | if (path) { |
1444 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1445 | snapshot_output); |
1446 | if (ret) { | |
1447 | goto error_snapshot_output; | |
1448 | } | |
1449 | } else { | |
1b08cbce JR |
1450 | if (control_uri) { |
1451 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1452 | snapshot_output); |
1453 | if (ret) { | |
1454 | goto error_snapshot_output; | |
1455 | } | |
1456 | } | |
1457 | ||
1b08cbce JR |
1458 | if (data_uri) { |
1459 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1460 | snapshot_output); |
1461 | if (ret) { | |
1462 | goto error_snapshot_output; | |
1463 | } | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1468 | error_snapshot_output: | |
1469 | free(name); | |
1470 | free(output.path); | |
1471 | free(output.control_uri); | |
1472 | free(output.data_uri); | |
1473 | lttng_snapshot_output_destroy(snapshot_output); | |
1474 | if (ret) { | |
1475 | goto end; | |
1476 | } | |
1477 | } | |
1478 | end: | |
1479 | return ret; | |
1480 | } | |
1481 | ||
1482 | static | |
1483 | int create_session(const char *name, | |
dcf266c0 | 1484 | xmlNodePtr output_node, |
1b08cbce JR |
1485 | uint64_t live_timer_interval, |
1486 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1487 | { |
1488 | int ret; | |
1489 | struct consumer_output output = { 0 }; | |
1490 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1491 | const char *control_uri = NULL; |
1492 | const char *data_uri = NULL; | |
1493 | const char *path = NULL; | |
dcf266c0 | 1494 | |
a0377dfe | 1495 | LTTNG_ASSERT(name); |
dcf266c0 JG |
1496 | |
1497 | if (output_node) { | |
1498 | consumer_output_node = xmlFirstElementChild(output_node); | |
1499 | if (!consumer_output_node) { | |
1500 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1501 | goto end; | |
1502 | } | |
1503 | ||
1504 | if (strcmp((const char *) consumer_output_node->name, | |
1505 | config_element_consumer_output)) { | |
1506 | WARN("Invalid output type, expected %s node", | |
1507 | config_element_consumer_output); | |
1508 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1509 | goto end; | |
1510 | } | |
1511 | ||
1512 | ret = process_consumer_output(consumer_output_node, &output); | |
1513 | if (ret) { | |
1514 | goto end; | |
1515 | } | |
1516 | } | |
1517 | ||
21a3f144 JR |
1518 | control_uri = output.control_uri; |
1519 | data_uri = output.data_uri; | |
1520 | path = output.path; | |
1521 | ||
1b08cbce JR |
1522 | /* Check for override and apply them */ |
1523 | if (overrides) { | |
1524 | if (overrides->path_url) { | |
1b08cbce | 1525 | path = overrides->path_url; |
21a3f144 JR |
1526 | /* control/data_uri are null */; |
1527 | control_uri = NULL; | |
1528 | data_uri = NULL; | |
1b08cbce JR |
1529 | } else { |
1530 | if (overrides->ctrl_url) { | |
1b08cbce | 1531 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1532 | /* path is null */ |
1533 | path = NULL; | |
1b08cbce JR |
1534 | } |
1535 | if (overrides->data_url) { | |
1b08cbce | 1536 | data_uri = overrides->data_url; |
21a3f144 JR |
1537 | /* path is null */ |
1538 | path = NULL; | |
1b08cbce JR |
1539 | } |
1540 | } | |
1b08cbce JR |
1541 | } |
1542 | ||
21a3f144 | 1543 | |
1b08cbce | 1544 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1545 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1546 | goto end; | |
1547 | } | |
1548 | ||
1b08cbce | 1549 | if (control_uri || data_uri) { |
dcf266c0 JG |
1550 | /* network destination */ |
1551 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1552 | /* |
1553 | * URLs are provided for sure since the test above make sure that | |
1554 | * with a live timer the data and control URIs are provided. So, | |
1555 | * NULL is passed here and will be set right after. | |
1556 | */ | |
1557 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1558 | } else { |
1559 | ret = lttng_create_session(name, NULL); | |
1560 | } | |
1561 | if (ret) { | |
1562 | goto end; | |
1563 | } | |
1564 | ||
1b08cbce | 1565 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1566 | if (ret) { |
1567 | goto end; | |
dcf266c0 | 1568 | } |
95681498 | 1569 | |
dcf266c0 JG |
1570 | } else { |
1571 | /* either local output or no output */ | |
1b08cbce | 1572 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1573 | if (ret) { |
1574 | goto end; | |
1575 | } | |
1576 | } | |
1577 | end: | |
1578 | free(output.path); | |
1579 | free(output.control_uri); | |
1580 | free(output.data_uri); | |
1581 | return ret; | |
1582 | } | |
c1e83fb4 FD |
1583 | |
1584 | static | |
1585 | struct lttng_userspace_probe_location * | |
1586 | process_userspace_probe_function_attribute_node( | |
1587 | xmlNodePtr attribute_node) | |
1588 | { | |
c1e83fb4 | 1589 | xmlNodePtr function_attribute_node; |
717d2dba | 1590 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1591 | struct lttng_userspace_probe_location *location = NULL; |
1592 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1593 | ||
1594 | /* | |
1595 | * Process userspace probe location function attributes. The order of | |
1596 | * the fields are not guaranteed so we need to iterate over all fields | |
1597 | * and check at the end if everything we need for this location type is | |
1598 | * there. | |
1599 | */ | |
1600 | for (function_attribute_node = | |
1601 | xmlFirstElementChild(attribute_node); | |
1602 | function_attribute_node; | |
1603 | function_attribute_node = xmlNextElementSibling( | |
1604 | function_attribute_node)) { | |
1605 | /* Handle function name, binary path and lookup method. */ | |
1606 | if (!strcmp((const char *) function_attribute_node->name, | |
1607 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1608 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1609 | if (!function_name) { |
c1e83fb4 FD |
1610 | goto error; |
1611 | } | |
1612 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1613 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1614 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1615 | if (!binary_path) { |
c1e83fb4 FD |
1616 | goto error; |
1617 | } | |
1618 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1619 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1620 | char *lookup_method_name; |
c1e83fb4 | 1621 | |
717d2dba JG |
1622 | lookup_method_name = (char *) xmlNodeGetContent( |
1623 | function_attribute_node); | |
c1e83fb4 | 1624 | if (!lookup_method_name) { |
c1e83fb4 FD |
1625 | goto error; |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * function_default lookup method defaults to | |
1630 | * function_elf lookup method at the moment. | |
1631 | */ | |
1632 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1633 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1634 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1635 | if (!lookup_method) { | |
1636 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1637 | } |
1638 | } else { | |
717d2dba JG |
1639 | WARN("Unknown function lookup method"); |
1640 | } | |
1641 | ||
1642 | free(lookup_method_name); | |
1643 | if (!lookup_method) { | |
c1e83fb4 FD |
1644 | goto error; |
1645 | } | |
1646 | } else { | |
1647 | goto error; | |
1648 | } | |
1649 | ||
1650 | /* Check if all the necessary fields were found. */ | |
1651 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1652 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1653 | location = |
1654 | lttng_userspace_probe_location_function_create( | |
1655 | binary_path, function_name, | |
1656 | lookup_method); | |
717d2dba JG |
1657 | lookup_method = NULL; |
1658 | goto error; | |
c1e83fb4 FD |
1659 | } |
1660 | } | |
1661 | error: | |
717d2dba | 1662 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1663 | free(binary_path); |
1664 | free(function_name); | |
c1e83fb4 FD |
1665 | return location; |
1666 | } | |
1667 | ||
1668 | static | |
1669 | struct lttng_userspace_probe_location * | |
1670 | process_userspace_probe_tracepoint_attribute_node( | |
1671 | xmlNodePtr attribute_node) | |
1672 | { | |
c1e83fb4 | 1673 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1674 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1675 | struct lttng_userspace_probe_location *location = NULL; | |
1676 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1677 | ||
1678 | /* | |
1679 | * Process userspace probe location tracepoint attributes. The order of | |
1680 | * the fields are not guaranteed so we need to iterate over all fields | |
1681 | * and check at the end if everything we need for this location type is | |
1682 | * there. | |
1683 | */ | |
1684 | for (tracepoint_attribute_node = | |
1685 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1686 | tracepoint_attribute_node = xmlNextElementSibling( | |
1687 | tracepoint_attribute_node)) { | |
1688 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1689 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1690 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1691 | if (!probe_name) { |
c1e83fb4 FD |
1692 | goto error; |
1693 | } | |
1694 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1695 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1696 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1697 | if (!provider_name) { |
c1e83fb4 FD |
1698 | goto error; |
1699 | } | |
1700 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1701 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1702 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1703 | if (!binary_path) { |
c1e83fb4 FD |
1704 | goto error; |
1705 | } | |
1706 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1707 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1708 | char *lookup_method_name; |
c1e83fb4 | 1709 | |
717d2dba JG |
1710 | lookup_method_name = (char *) xmlNodeGetContent( |
1711 | tracepoint_attribute_node); | |
c1e83fb4 | 1712 | if (!lookup_method_name) { |
c1e83fb4 FD |
1713 | goto error; |
1714 | } | |
1715 | ||
1716 | if (!strcmp(lookup_method_name, | |
1717 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1718 | lookup_method = | |
1719 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1720 | if (!lookup_method) { | |
1721 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1722 | } |
1723 | } else { | |
717d2dba JG |
1724 | WARN("Unknown tracepoint lookup method"); |
1725 | } | |
1726 | ||
1727 | free(lookup_method_name); | |
1728 | if (!lookup_method) { | |
c1e83fb4 FD |
1729 | goto error; |
1730 | } | |
1731 | } else { | |
717d2dba | 1732 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1733 | goto error; |
1734 | } | |
1735 | ||
1736 | /* Check if all the necessary fields were found. */ | |
1737 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1738 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1739 | location = |
1740 | lttng_userspace_probe_location_tracepoint_create( | |
1741 | binary_path, provider_name, | |
1742 | probe_name, lookup_method); | |
6bd61b96 | 1743 | lookup_method = NULL; |
717d2dba | 1744 | goto error; |
c1e83fb4 FD |
1745 | } |
1746 | } | |
1747 | error: | |
717d2dba | 1748 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1749 | free(binary_path); |
c1e83fb4 | 1750 | free(provider_name); |
717d2dba | 1751 | free(probe_name); |
c1e83fb4 FD |
1752 | return location; |
1753 | } | |
1754 | ||
dcf266c0 JG |
1755 | static |
1756 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1757 | struct lttng_event_probe_attr *attr) | |
1758 | { | |
1759 | int ret; | |
1760 | ||
a0377dfe FD |
1761 | LTTNG_ASSERT(probe_attribute_node); |
1762 | LTTNG_ASSERT(attr); | |
dcf266c0 JG |
1763 | |
1764 | if (!strcmp((const char *) probe_attribute_node->name, | |
1765 | config_element_address)) { | |
1766 | xmlChar *content; | |
1767 | uint64_t addr = 0; | |
1768 | ||
1769 | /* addr */ | |
1770 | content = xmlNodeGetContent(probe_attribute_node); | |
1771 | if (!content) { | |
1772 | ret = -LTTNG_ERR_NOMEM; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
1776 | ret = parse_uint(content, &addr); | |
1777 | free(content); | |
1778 | if (ret) { | |
1779 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1780 | goto end; | |
1781 | } | |
1782 | ||
1783 | attr->addr = addr; | |
1784 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1785 | config_element_offset)) { | |
1786 | xmlChar *content; | |
1787 | uint64_t offset = 0; | |
1788 | ||
1789 | /* offset */ | |
1790 | content = xmlNodeGetContent(probe_attribute_node); | |
1791 | if (!content) { | |
1792 | ret = -LTTNG_ERR_NOMEM; | |
1793 | goto end; | |
1794 | } | |
1795 | ||
1796 | ret = parse_uint(content, &offset); | |
1797 | free(content); | |
1798 | if (ret) { | |
1799 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1800 | goto end; | |
1801 | } | |
1802 | ||
1803 | attr->offset = offset; | |
1804 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1805 | config_element_symbol_name)) { | |
1806 | xmlChar *content; | |
dcf266c0 JG |
1807 | |
1808 | /* symbol_name */ | |
1809 | content = xmlNodeGetContent(probe_attribute_node); | |
1810 | if (!content) { | |
1811 | ret = -LTTNG_ERR_NOMEM; | |
1812 | goto end; | |
1813 | } | |
1814 | ||
d2e67842 JG |
1815 | ret = lttng_strncpy(attr->symbol_name, |
1816 | (const char *) content, | |
1817 | LTTNG_SYMBOL_NAME_LEN); | |
1818 | if (ret == -1) { | |
1819 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1820 | (const char *) content, | |
1821 | strlen((const char *) content), | |
1822 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1823 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1824 | free(content); | |
1825 | goto end; | |
1826 | } | |
dcf266c0 JG |
1827 | free(content); |
1828 | } | |
1829 | ret = 0; | |
1830 | end: | |
1831 | return ret; | |
1832 | } | |
1833 | ||
1834 | static | |
1835 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1836 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1837 | { |
d7b645e2 | 1838 | int ret = 0, i; |
dcf266c0 | 1839 | xmlNodePtr node; |
91744e14 | 1840 | struct lttng_event *event; |
dcf266c0 JG |
1841 | char **exclusions = NULL; |
1842 | unsigned long exclusion_count = 0; | |
1843 | char *filter_expression = NULL; | |
1844 | ||
a0377dfe FD |
1845 | LTTNG_ASSERT(event_node); |
1846 | LTTNG_ASSERT(handle); | |
1847 | LTTNG_ASSERT(channel_name); | |
dcf266c0 | 1848 | |
91744e14 FD |
1849 | event = lttng_event_create(); |
1850 | if (!event) { | |
1851 | ret = -LTTNG_ERR_NOMEM; | |
1852 | goto end; | |
1853 | } | |
dcf266c0 | 1854 | |
f40eba3d JG |
1855 | /* Initialize default log level which varies by domain */ |
1856 | switch (handle->domain.type) | |
1857 | { | |
1858 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1859 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1860 | break; |
1861 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1862 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1863 | break; |
1864 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1865 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1866 | break; |
1867 | case LTTNG_DOMAIN_UST: | |
1868 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1869 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1870 | break; |
1871 | default: | |
a0377dfe | 1872 | abort(); |
f40eba3d JG |
1873 | } |
1874 | ||
dcf266c0 JG |
1875 | for (node = xmlFirstElementChild(event_node); node; |
1876 | node = xmlNextElementSibling(node)) { | |
1877 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1878 | xmlChar *content; | |
dcf266c0 JG |
1879 | |
1880 | /* name */ | |
1881 | content = xmlNodeGetContent(node); | |
1882 | if (!content) { | |
1883 | ret = -LTTNG_ERR_NOMEM; | |
1884 | goto end; | |
1885 | } | |
1886 | ||
91744e14 | 1887 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1888 | (const char *) content, |
1889 | LTTNG_SYMBOL_NAME_LEN); | |
1890 | if (ret == -1) { | |
1891 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1892 | (const char *) content, | |
1893 | strlen((const char *) content), | |
1894 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1895 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1896 | free(content); | |
1897 | goto end; | |
1898 | } | |
dcf266c0 JG |
1899 | free(content); |
1900 | } else if (!strcmp((const char *) node->name, | |
1901 | config_element_enabled)) { | |
1902 | xmlChar *content = xmlNodeGetContent(node); | |
1903 | ||
1904 | /* enabled */ | |
1905 | if (!content) { | |
1906 | ret = -LTTNG_ERR_NOMEM; | |
1907 | goto end; | |
1908 | } | |
1909 | ||
91744e14 | 1910 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1911 | free(content); |
1912 | if (ret) { | |
1913 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1914 | goto end; | |
1915 | } | |
1916 | } else if (!strcmp((const char *) node->name, | |
1917 | config_element_type)) { | |
1918 | xmlChar *content = xmlNodeGetContent(node); | |
1919 | ||
1920 | /* type */ | |
1921 | if (!content) { | |
1922 | ret = -LTTNG_ERR_NOMEM; | |
1923 | goto end; | |
1924 | } | |
1925 | ||
1926 | ret = get_event_type(content); | |
1927 | free(content); | |
1928 | if (ret < 0) { | |
1929 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1930 | goto end; | |
1931 | } | |
1932 | ||
3afa94ae | 1933 | event->type = (lttng_event_type) ret; |
dcf266c0 JG |
1934 | } else if (!strcmp((const char *) node->name, |
1935 | config_element_loglevel_type)) { | |
1936 | xmlChar *content = xmlNodeGetContent(node); | |
1937 | ||
1938 | /* loglevel_type */ | |
1939 | if (!content) { | |
1940 | ret = -LTTNG_ERR_NOMEM; | |
1941 | goto end; | |
1942 | } | |
1943 | ||
1944 | ret = get_loglevel_type(content); | |
1945 | free(content); | |
1946 | if (ret < 0) { | |
1947 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1948 | goto end; | |
1949 | } | |
1950 | ||
3afa94ae | 1951 | event->loglevel_type = (lttng_loglevel_type) ret; |
dcf266c0 JG |
1952 | } else if (!strcmp((const char *) node->name, |
1953 | config_element_loglevel)) { | |
1954 | xmlChar *content; | |
1955 | int64_t loglevel = 0; | |
1956 | ||
1957 | /* loglevel */ | |
1958 | content = xmlNodeGetContent(node); | |
1959 | if (!content) { | |
1960 | ret = -LTTNG_ERR_NOMEM; | |
1961 | goto end; | |
1962 | } | |
1963 | ||
1964 | ret = parse_int(content, &loglevel); | |
1965 | free(content); | |
1966 | if (ret) { | |
1967 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1968 | goto end; | |
1969 | } | |
1970 | ||
1971 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1972 | WARN("loglevel out of range."); | |
1973 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1974 | goto end; | |
1975 | } | |
1976 | ||
91744e14 | 1977 | event->loglevel = loglevel; |
dcf266c0 JG |
1978 | } else if (!strcmp((const char *) node->name, |
1979 | config_element_filter)) { | |
1980 | xmlChar *content = | |
1981 | xmlNodeGetContent(node); | |
1982 | ||
1983 | /* filter */ | |
1984 | if (!content) { | |
1985 | ret = -LTTNG_ERR_NOMEM; | |
1986 | goto end; | |
1987 | } | |
1988 | ||
02d8ac3d | 1989 | free(filter_expression); |
dcf266c0 JG |
1990 | filter_expression = strdup((char *) content); |
1991 | free(content); | |
1992 | if (!filter_expression) { | |
1993 | ret = -LTTNG_ERR_NOMEM; | |
1994 | goto end; | |
1995 | } | |
1996 | } else if (!strcmp((const char *) node->name, | |
1997 | config_element_exclusions)) { | |
1998 | xmlNodePtr exclusion_node; | |
1999 | int exclusion_index = 0; | |
2000 | ||
2001 | /* exclusions */ | |
2002 | if (exclusions) { | |
2003 | /* | |
2004 | * Exclusions has already been initialized, | |
2005 | * invalid file. | |
2006 | */ | |
2007 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2008 | goto end; | |
2009 | } | |
2010 | ||
2011 | exclusion_count = xmlChildElementCount(node); | |
2012 | if (!exclusion_count) { | |
2013 | continue; | |
2014 | } | |
2015 | ||
3afa94ae | 2016 | exclusions = (char **) zmalloc(exclusion_count * sizeof(char *)); |
dcf266c0 JG |
2017 | if (!exclusions) { |
2018 | exclusion_count = 0; | |
2019 | ret = -LTTNG_ERR_NOMEM; | |
2020 | goto end; | |
2021 | } | |
2022 | ||
2023 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2024 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2025 | xmlChar *content = | |
2026 | xmlNodeGetContent(exclusion_node); | |
2027 | ||
2028 | if (!content) { | |
2029 | ret = -LTTNG_ERR_NOMEM; | |
2030 | goto end; | |
2031 | } | |
2032 | ||
2033 | exclusions[exclusion_index] = strdup((const char *) content); | |
2034 | free(content); | |
2035 | if (!exclusions[exclusion_index]) { | |
2036 | ret = -LTTNG_ERR_NOMEM; | |
2037 | goto end; | |
2038 | } | |
2039 | exclusion_index++; | |
2040 | } | |
2041 | ||
91744e14 | 2042 | event->exclusion = 1; |
dcf266c0 JG |
2043 | } else if (!strcmp((const char *) node->name, |
2044 | config_element_attributes)) { | |
2045 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2046 | ||
2047 | /* attributes */ | |
2048 | if (!attribute_node) { | |
2049 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2050 | goto end; | |
2051 | } | |
2052 | ||
c1e83fb4 | 2053 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2054 | config_element_probe_attributes)) { |
2055 | xmlNodePtr probe_attribute_node; | |
2056 | ||
2057 | /* probe_attributes */ | |
2058 | for (probe_attribute_node = | |
2059 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2060 | probe_attribute_node = xmlNextElementSibling( | |
2061 | probe_attribute_node)) { | |
2062 | ||
2063 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2064 | &event->attr.probe); |
dcf266c0 JG |
2065 | if (ret) { |
2066 | goto end; | |
2067 | } | |
2068 | } | |
c1e83fb4 FD |
2069 | } else if (!strcmp((const char *) attribute_node->name, |
2070 | config_element_function_attributes)) { | |
dcf266c0 JG |
2071 | size_t sym_len; |
2072 | xmlChar *content; | |
2073 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2074 | ||
2075 | /* function_attributes */ | |
2076 | content = xmlNodeGetContent(symbol_node); | |
2077 | if (!content) { | |
2078 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2079 | goto end; | |
2080 | } | |
2081 | ||
2082 | sym_len = strlen((char *) content); | |
2083 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2084 | WARN("Function name too long."); | |
2085 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2086 | free(content); | |
2087 | goto end; | |
2088 | } | |
2089 | ||
d2e67842 | 2090 | ret = lttng_strncpy( |
91744e14 | 2091 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2092 | (char *) content, sym_len); |
2093 | if (ret == -1) { | |
2094 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2095 | free(content); | |
2096 | goto end; | |
2097 | } | |
dcf266c0 | 2098 | free(content); |
c1e83fb4 FD |
2099 | } else if (!strcmp((const char *) attribute_node->name, |
2100 | config_element_userspace_probe_tracepoint_attributes)) { | |
2101 | struct lttng_userspace_probe_location *location; | |
2102 | ||
2103 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2104 | if (!location) { | |
2105 | WARN("Error processing userspace probe tracepoint attribute"); | |
2106 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2107 | goto end; | |
2108 | } | |
2109 | ret = lttng_event_set_userspace_probe_location( | |
2110 | event, location); | |
2111 | if (ret) { | |
2112 | WARN("Error setting userspace probe location field"); | |
2113 | lttng_userspace_probe_location_destroy( | |
2114 | location); | |
2115 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2116 | goto end; | |
2117 | } | |
2118 | } else if (!strcmp((const char *) attribute_node->name, | |
2119 | config_element_userspace_probe_function_attributes)) { | |
2120 | struct lttng_userspace_probe_location *location; | |
2121 | ||
2122 | location = | |
2123 | process_userspace_probe_function_attribute_node( | |
2124 | attribute_node); | |
2125 | if (!location) { | |
2126 | WARN("Error processing userspace probe function attribute"); | |
2127 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2128 | goto end; | |
2129 | } | |
2130 | ||
2131 | ret = lttng_event_set_userspace_probe_location( | |
2132 | event, location); | |
2133 | if (ret) { | |
2134 | WARN("Error setting userspace probe location field"); | |
2135 | lttng_userspace_probe_location_destroy( | |
2136 | location); | |
2137 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2138 | goto end; | |
2139 | } | |
2140 | } else { | |
2141 | /* Unknown event attribute. */ | |
2142 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2143 | goto end; | |
dcf266c0 JG |
2144 | } |
2145 | } | |
2146 | } | |
2147 | ||
91744e14 FD |
2148 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2149 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2150 | filter_expression, exclusion_count, exclusions); |
2151 | if (ret < 0) { | |
91744e14 | 2152 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2153 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2154 | goto end; | |
2155 | } | |
065321e9 | 2156 | } |
d2e67842 | 2157 | ret = 0; |
dcf266c0 JG |
2158 | end: |
2159 | for (i = 0; i < exclusion_count; i++) { | |
2160 | free(exclusions[i]); | |
2161 | } | |
2162 | ||
b33f872b | 2163 | lttng_event_destroy(event); |
dcf266c0 JG |
2164 | free(exclusions); |
2165 | free(filter_expression); | |
2166 | return ret; | |
2167 | } | |
2168 | ||
2169 | static | |
2170 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2171 | const char *channel_name) | |
2172 | { | |
2173 | int ret = 0; | |
d7b645e2 | 2174 | struct lttng_event event; |
dcf266c0 JG |
2175 | xmlNodePtr node; |
2176 | ||
a0377dfe FD |
2177 | LTTNG_ASSERT(events_node); |
2178 | LTTNG_ASSERT(handle); | |
2179 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2180 | |
2181 | for (node = xmlFirstElementChild(events_node); node; | |
2182 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2183 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2184 | if (ret) { |
2185 | goto end; | |
2186 | } | |
2187 | } | |
d7b645e2 JR |
2188 | |
2189 | /* | |
2190 | * Disable all events to enable only the necessary events. | |
2191 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2192 | * force this approach. | |
2193 | */ | |
2194 | memset(&event, 0, sizeof(event)); | |
2195 | event.loglevel = -1; | |
2196 | event.type = LTTNG_EVENT_ALL; | |
2197 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2198 | if (ret) { | |
2199 | goto end; | |
2200 | } | |
2201 | ||
2202 | for (node = xmlFirstElementChild(events_node); node; | |
2203 | node = xmlNextElementSibling(node)) { | |
2204 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2205 | if (ret) { | |
2206 | goto end; | |
2207 | } | |
2208 | } | |
2209 | ||
dcf266c0 JG |
2210 | end: |
2211 | return ret; | |
2212 | } | |
2213 | ||
2214 | static | |
2215 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2216 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2217 | xmlNodePtr *events_node) | |
2218 | { | |
2219 | int ret; | |
2220 | ||
a0377dfe FD |
2221 | LTTNG_ASSERT(attr_node); |
2222 | LTTNG_ASSERT(channel); | |
2223 | LTTNG_ASSERT(contexts_node); | |
2224 | LTTNG_ASSERT(events_node); | |
dcf266c0 JG |
2225 | |
2226 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2227 | xmlChar *content; | |
dcf266c0 JG |
2228 | |
2229 | /* name */ | |
2230 | content = xmlNodeGetContent(attr_node); | |
2231 | if (!content) { | |
2232 | ret = -LTTNG_ERR_NOMEM; | |
2233 | goto end; | |
2234 | } | |
2235 | ||
d2e67842 JG |
2236 | ret = lttng_strncpy(channel->name, |
2237 | (const char *) content, | |
2238 | LTTNG_SYMBOL_NAME_LEN); | |
2239 | if (ret == -1) { | |
2240 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2241 | (const char *) content, | |
2242 | strlen((const char *) content), | |
2243 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2244 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2245 | free(content); | |
2246 | goto end; | |
2247 | } | |
dcf266c0 JG |
2248 | free(content); |
2249 | } else if (!strcmp((const char *) attr_node->name, | |
2250 | config_element_enabled)) { | |
2251 | xmlChar *content; | |
2252 | int enabled; | |
2253 | ||
2254 | /* enabled */ | |
2255 | content = xmlNodeGetContent(attr_node); | |
2256 | if (!content) { | |
2257 | ret = -LTTNG_ERR_NOMEM; | |
2258 | goto end; | |
2259 | } | |
2260 | ||
2261 | ret = parse_bool(content, &enabled); | |
2262 | free(content); | |
2263 | if (ret) { | |
2264 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2265 | goto end; | |
2266 | } | |
2267 | ||
2268 | channel->enabled = enabled; | |
2269 | } else if (!strcmp((const char *) attr_node->name, | |
2270 | config_element_overwrite_mode)) { | |
2271 | xmlChar *content; | |
2272 | ||
2273 | /* overwrite_mode */ | |
2274 | content = xmlNodeGetContent(attr_node); | |
2275 | if (!content) { | |
2276 | ret = -LTTNG_ERR_NOMEM; | |
2277 | goto end; | |
2278 | } | |
2279 | ||
2280 | ret = get_overwrite_mode(content); | |
2281 | free(content); | |
2282 | if (ret < 0) { | |
2283 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2284 | goto end; | |
2285 | } | |
2286 | ||
2287 | channel->attr.overwrite = ret; | |
2288 | } else if (!strcmp((const char *) attr_node->name, | |
2289 | config_element_subbuf_size)) { | |
2290 | xmlChar *content; | |
2291 | ||
2292 | /* subbuffer_size */ | |
2293 | content = xmlNodeGetContent(attr_node); | |
2294 | if (!content) { | |
2295 | ret = -LTTNG_ERR_NOMEM; | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2300 | free(content); | |
2301 | if (ret) { | |
2302 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2303 | goto end; | |
2304 | } | |
2305 | } else if (!strcmp((const char *) attr_node->name, | |
2306 | config_element_num_subbuf)) { | |
2307 | xmlChar *content; | |
2308 | ||
2309 | /* subbuffer_count */ | |
2310 | content = xmlNodeGetContent(attr_node); | |
2311 | if (!content) { | |
2312 | ret = -LTTNG_ERR_NOMEM; | |
2313 | goto end; | |
2314 | } | |
2315 | ||
2316 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2317 | free(content); | |
2318 | if (ret) { | |
2319 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2320 | goto end; | |
2321 | } | |
2322 | } else if (!strcmp((const char *) attr_node->name, | |
2323 | config_element_switch_timer_interval)) { | |
2324 | xmlChar *content; | |
2325 | uint64_t switch_timer_interval = 0; | |
2326 | ||
2327 | /* switch_timer_interval */ | |
2328 | content = xmlNodeGetContent(attr_node); | |
2329 | if (!content) { | |
2330 | ret = -LTTNG_ERR_NOMEM; | |
2331 | goto end; | |
2332 | } | |
2333 | ||
2334 | ret = parse_uint(content, &switch_timer_interval); | |
2335 | free(content); | |
2336 | if (ret) { | |
2337 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2338 | goto end; | |
2339 | } | |
2340 | ||
2341 | if (switch_timer_interval > UINT_MAX) { | |
2342 | WARN("switch_timer_interval out of range."); | |
2343 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2344 | goto end; | |
2345 | } | |
2346 | ||
2347 | channel->attr.switch_timer_interval = | |
2348 | switch_timer_interval; | |
2349 | } else if (!strcmp((const char *) attr_node->name, | |
2350 | config_element_read_timer_interval)) { | |
2351 | xmlChar *content; | |
2352 | uint64_t read_timer_interval = 0; | |
2353 | ||
2354 | /* read_timer_interval */ | |
2355 | content = xmlNodeGetContent(attr_node); | |
2356 | if (!content) { | |
2357 | ret = -LTTNG_ERR_NOMEM; | |
2358 | goto end; | |
2359 | } | |
2360 | ||
2361 | ret = parse_uint(content, &read_timer_interval); | |
2362 | free(content); | |
2363 | if (ret) { | |
2364 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2365 | goto end; | |
2366 | } | |
2367 | ||
2368 | if (read_timer_interval > UINT_MAX) { | |
2369 | WARN("read_timer_interval out of range."); | |
2370 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2371 | goto end; | |
2372 | } | |
2373 | ||
2374 | channel->attr.read_timer_interval = | |
2375 | read_timer_interval; | |
2376 | } else if (!strcmp((const char *) attr_node->name, | |
2377 | config_element_output_type)) { | |
2378 | xmlChar *content; | |
2379 | ||
2380 | /* output_type */ | |
2381 | content = xmlNodeGetContent(attr_node); | |
2382 | if (!content) { | |
2383 | ret = -LTTNG_ERR_NOMEM; | |
2384 | goto end; | |
2385 | } | |
2386 | ||
2387 | ret = get_output_type(content); | |
2388 | free(content); | |
2389 | if (ret < 0) { | |
2390 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2391 | goto end; | |
2392 | } | |
2393 | ||
3afa94ae | 2394 | channel->attr.output = (lttng_event_output) ret; |
dcf266c0 JG |
2395 | } else if (!strcmp((const char *) attr_node->name, |
2396 | config_element_tracefile_size)) { | |
2397 | xmlChar *content; | |
2398 | ||
2399 | /* tracefile_size */ | |
2400 | content = xmlNodeGetContent(attr_node); | |
2401 | if (!content) { | |
2402 | ret = -LTTNG_ERR_NOMEM; | |
2403 | goto end; | |
2404 | } | |
2405 | ||
2406 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2407 | free(content); | |
2408 | if (ret) { | |
2409 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2410 | goto end; | |
2411 | } | |
2412 | } else if (!strcmp((const char *) attr_node->name, | |
2413 | config_element_tracefile_count)) { | |
2414 | xmlChar *content; | |
2415 | ||
2416 | /* tracefile_count */ | |
2417 | content = xmlNodeGetContent(attr_node); | |
2418 | if (!content) { | |
2419 | ret = -LTTNG_ERR_NOMEM; | |
2420 | goto end; | |
2421 | } | |
2422 | ||
2423 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2424 | free(content); | |
2425 | if (ret) { | |
2426 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2427 | goto end; | |
2428 | } | |
2429 | } else if (!strcmp((const char *) attr_node->name, | |
2430 | config_element_live_timer_interval)) { | |
2431 | xmlChar *content; | |
2432 | uint64_t live_timer_interval = 0; | |
2433 | ||
2434 | /* live_timer_interval */ | |
2435 | content = xmlNodeGetContent(attr_node); | |
2436 | if (!content) { | |
2437 | ret = -LTTNG_ERR_NOMEM; | |
2438 | goto end; | |
2439 | } | |
2440 | ||
2441 | ret = parse_uint(content, &live_timer_interval); | |
2442 | free(content); | |
2443 | if (ret) { | |
2444 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2445 | goto end; | |
2446 | } | |
2447 | ||
2448 | if (live_timer_interval > UINT_MAX) { | |
2449 | WARN("live_timer_interval out of range."); | |
2450 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2451 | goto end; | |
2452 | } | |
2453 | ||
2454 | channel->attr.live_timer_interval = | |
2455 | live_timer_interval; | |
4fc2b126 JR |
2456 | } else if (!strcmp((const char *) attr_node->name, |
2457 | config_element_monitor_timer_interval)) { | |
2458 | xmlChar *content; | |
2459 | uint64_t monitor_timer_interval = 0; | |
2460 | ||
2461 | /* monitor_timer_interval */ | |
2462 | content = xmlNodeGetContent(attr_node); | |
2463 | if (!content) { | |
2464 | ret = -LTTNG_ERR_NOMEM; | |
2465 | goto end; | |
2466 | } | |
2467 | ||
2468 | ret = parse_uint(content, &monitor_timer_interval); | |
2469 | free(content); | |
2470 | if (ret) { | |
2471 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2472 | goto end; | |
2473 | } | |
2474 | ||
2475 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2476 | monitor_timer_interval); | |
2477 | if (ret) { | |
2478 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2479 | goto end; | |
2480 | } | |
275472aa JR |
2481 | } else if (!strcmp((const char *) attr_node->name, |
2482 | config_element_blocking_timeout)) { | |
2483 | xmlChar *content; | |
2484 | int64_t blocking_timeout = 0; | |
2485 | ||
2486 | /* blocking_timeout */ | |
2487 | content = xmlNodeGetContent(attr_node); | |
2488 | if (!content) { | |
2489 | ret = -LTTNG_ERR_NOMEM; | |
2490 | goto end; | |
2491 | } | |
2492 | ||
2493 | ret = parse_int(content, &blocking_timeout); | |
2494 | free(content); | |
2495 | if (ret) { | |
2496 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2497 | goto end; | |
2498 | } | |
2499 | ||
2500 | ret = lttng_channel_set_blocking_timeout(channel, | |
2501 | blocking_timeout); | |
2502 | if (ret) { | |
2503 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2504 | goto end; | |
2505 | } | |
dcf266c0 JG |
2506 | } else if (!strcmp((const char *) attr_node->name, |
2507 | config_element_events)) { | |
2508 | /* events */ | |
2509 | *events_node = attr_node; | |
2510 | } else { | |
2511 | /* contexts */ | |
2512 | *contexts_node = attr_node; | |
2513 | } | |
2514 | ret = 0; | |
2515 | end: | |
2516 | return ret; | |
2517 | } | |
2518 | ||
2519 | static | |
2520 | int process_context_node(xmlNodePtr context_node, | |
2521 | struct lttng_handle *handle, const char *channel_name) | |
2522 | { | |
2523 | int ret; | |
2524 | struct lttng_event_context context; | |
2525 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2526 | ||
a0377dfe FD |
2527 | LTTNG_ASSERT(handle); |
2528 | LTTNG_ASSERT(channel_name); | |
dcf266c0 JG |
2529 | |
2530 | if (!context_child_node) { | |
2531 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2532 | goto end; | |
2533 | } | |
2534 | ||
2535 | memset(&context, 0, sizeof(context)); | |
2536 | ||
2537 | if (!strcmp((const char *) context_child_node->name, | |
2538 | config_element_type)) { | |
2539 | /* type */ | |
2540 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2541 | |
dcf266c0 JG |
2542 | if (!content) { |
2543 | ret = -LTTNG_ERR_NOMEM; | |
2544 | goto end; | |
2545 | } | |
2546 | ||
2547 | ret = get_context_type(content); | |
2548 | free(content); | |
2549 | if (ret < 0) { | |
2550 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2551 | goto end; | |
2552 | } | |
2553 | ||
3afa94ae | 2554 | context.ctx = (lttng_event_context_type) ret; |
045fc617 JG |
2555 | } else if (!strcmp((const char *) context_child_node->name, |
2556 | config_element_context_perf)) { | |
2557 | /* perf */ | |
dcf266c0 JG |
2558 | xmlNodePtr perf_attr_node; |
2559 | ||
14ce5bd8 JG |
2560 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2561 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2562 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2563 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2564 | perf_attr_node; perf_attr_node = | |
2565 | xmlNextElementSibling(perf_attr_node)) { | |
2566 | if (!strcmp((const char *) perf_attr_node->name, | |
2567 | config_element_type)) { | |
2568 | xmlChar *content; | |
2569 | uint64_t type = 0; | |
2570 | ||
2571 | /* type */ | |
2572 | content = xmlNodeGetContent(perf_attr_node); | |
2573 | if (!content) { | |
2574 | ret = -LTTNG_ERR_NOMEM; | |
2575 | goto end; | |
2576 | } | |
2577 | ||
2578 | ret = parse_uint(content, &type); | |
2579 | free(content); | |
2580 | if (ret) { | |
2581 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2582 | goto end; | |
2583 | } | |
2584 | ||
2585 | if (type > UINT32_MAX) { | |
2586 | WARN("perf context type out of range."); | |
2587 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2588 | goto end; | |
2589 | } | |
2590 | ||
2591 | context.u.perf_counter.type = type; | |
2592 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2593 | config_element_config)) { | |
2594 | xmlChar *content; | |
2595 | uint64_t config = 0; | |
2596 | ||
2597 | /* config */ | |
2598 | content = xmlNodeGetContent(perf_attr_node); | |
2599 | if (!content) { | |
2600 | ret = -LTTNG_ERR_NOMEM; | |
2601 | goto end; | |
2602 | } | |
2603 | ||
2604 | ret = parse_uint(content, &config); | |
2605 | free(content); | |
2606 | if (ret) { | |
2607 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2608 | goto end; | |
2609 | } | |
2610 | ||
2611 | context.u.perf_counter.config = config; | |
2612 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2613 | config_element_name)) { | |
2614 | xmlChar *content; | |
dcf266c0 JG |
2615 | |
2616 | /* name */ | |
2617 | content = xmlNodeGetContent(perf_attr_node); | |
2618 | if (!content) { | |
2619 | ret = -LTTNG_ERR_NOMEM; | |
2620 | goto end; | |
2621 | } | |
2622 | ||
d2e67842 JG |
2623 | ret = lttng_strncpy(context.u.perf_counter.name, |
2624 | (const char *) content, | |
2625 | LTTNG_SYMBOL_NAME_LEN); | |
2626 | if (ret == -1) { | |
2627 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2628 | (const char *) content, | |
2629 | strlen((const char *) content), | |
2630 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2631 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2632 | free(content); | |
2633 | goto end; | |
2634 | } | |
dcf266c0 JG |
2635 | free(content); |
2636 | } | |
2637 | } | |
045fc617 JG |
2638 | } else if (!strcmp((const char *) context_child_node->name, |
2639 | config_element_context_app)) { | |
2640 | /* application context */ | |
2641 | xmlNodePtr app_ctx_node; | |
2642 | ||
2643 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2644 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2645 | app_ctx_node; app_ctx_node = | |
2646 | xmlNextElementSibling(app_ctx_node)) { | |
2647 | xmlChar *content; | |
2648 | char **target = strcmp( | |
2649 | (const char *) app_ctx_node->name, | |
2650 | config_element_context_app_provider_name) == 0 ? | |
2651 | &context.u.app_ctx.provider_name : | |
2652 | &context.u.app_ctx.ctx_name; | |
2653 | ||
2654 | content = xmlNodeGetContent(app_ctx_node); | |
2655 | if (!content) { | |
2656 | ret = -LTTNG_ERR_NOMEM; | |
2657 | goto end; | |
2658 | } | |
2659 | ||
2660 | *target = (char *) content; | |
2661 | } | |
2662 | } else { | |
2663 | /* Unrecognized context type */ | |
2664 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2665 | goto end; | |
dcf266c0 JG |
2666 | } |
2667 | ||
2668 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2669 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2670 | free(context.u.app_ctx.provider_name); | |
2671 | free(context.u.app_ctx.ctx_name); | |
2672 | } | |
dcf266c0 JG |
2673 | end: |
2674 | return ret; | |
2675 | } | |
2676 | ||
2677 | static | |
2678 | int process_contexts_node(xmlNodePtr contexts_node, | |
2679 | struct lttng_handle *handle, const char *channel_name) | |
2680 | { | |
2681 | int ret = 0; | |
2682 | xmlNodePtr context_node; | |
2683 | ||
2684 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2685 | context_node = xmlNextElementSibling(context_node)) { | |
2686 | ret = process_context_node(context_node, handle, channel_name); | |
2687 | if (ret) { | |
2688 | goto end; | |
2689 | } | |
2690 | } | |
2691 | end: | |
2692 | return ret; | |
2693 | } | |
2694 | ||
159b042f | 2695 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2696 | const char **element_id_tracker, |
159b042f JG |
2697 | const char **element_value_type, |
2698 | const char **element_value, | |
2699 | const char **element_value_alias, | |
55c9e7ca JR |
2700 | const char **element_name) |
2701 | { | |
2702 | int ret = 0; | |
2703 | ||
159b042f JG |
2704 | switch (process_attr) { |
2705 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2706 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2707 | *element_value_type = config_element_process_attr_pid_value; | |
2708 | *element_value = config_element_process_attr_id; | |
2709 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2710 | *element_name = NULL; |
2711 | break; | |
159b042f JG |
2712 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2713 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2714 | *element_value_type = config_element_process_attr_vpid_value; | |
2715 | *element_value = config_element_process_attr_id; | |
2716 | *element_value_alias = NULL; | |
55c9e7ca JR |
2717 | *element_name = NULL; |
2718 | break; | |
159b042f JG |
2719 | case LTTNG_PROCESS_ATTR_USER_ID: |
2720 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2721 | *element_value_type = config_element_process_attr_uid_value; | |
2722 | *element_value = config_element_process_attr_id; | |
2723 | *element_value_alias = NULL; | |
55c9e7ca JR |
2724 | *element_name = config_element_name; |
2725 | break; | |
159b042f JG |
2726 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2727 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2728 | *element_value_type = config_element_process_attr_vuid_value; | |
2729 | *element_value = config_element_process_attr_id; | |
2730 | *element_value_alias = NULL; | |
55c9e7ca JR |
2731 | *element_name = config_element_name; |
2732 | break; | |
159b042f JG |
2733 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2734 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2735 | *element_value_type = config_element_process_attr_gid_value; | |
2736 | *element_value = config_element_process_attr_id; | |
2737 | *element_value_alias = NULL; | |
55c9e7ca JR |
2738 | *element_name = config_element_name; |
2739 | break; | |
159b042f JG |
2740 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2741 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2742 | *element_value_type = config_element_process_attr_vgid_value; | |
2743 | *element_value = config_element_process_attr_id; | |
2744 | *element_value_alias = NULL; | |
55c9e7ca JR |
2745 | *element_name = config_element_name; |
2746 | break; | |
2747 | default: | |
2748 | ret = LTTNG_ERR_INVALID; | |
2749 | } | |
2750 | return ret; | |
2751 | } | |
2752 | ||
f7af9a72 JG |
2753 | static int process_legacy_pid_tracker_node( |
2754 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2755 | { | |
2756 | int ret = 0, child_count; | |
2757 | xmlNodePtr targets_node = NULL; | |
2758 | xmlNodePtr node; | |
2759 | const char *element_id_tracker; | |
2760 | const char *element_target_id; | |
2761 | const char *element_id; | |
2762 | const char *element_id_alias; | |
2763 | const char *element_name; | |
2764 | enum lttng_error_code tracker_handle_ret_code; | |
2765 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2766 | enum lttng_process_attr_tracker_handle_status status; | |
2767 | const enum lttng_process_attr process_attr = | |
2768 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2769 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2770 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2771 | ||
a0377dfe | 2772 | LTTNG_ASSERT(handle); |
f7af9a72 JG |
2773 | |
2774 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2775 | handle->session_name, handle->domain.type, | |
2776 | process_attr, | |
2777 | &tracker_handle); | |
2778 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2779 | ret = LTTNG_ERR_INVALID; | |
2780 | goto end; | |
2781 | } | |
2782 | ||
2783 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2784 | &element_target_id, &element_id, &element_id_alias, | |
2785 | &element_name); | |
2786 | if (ret) { | |
2787 | goto end; | |
2788 | } | |
2789 | ||
2790 | /* Get the targets node */ | |
2791 | for (node = xmlFirstElementChild(trackers_node); node; | |
2792 | node = xmlNextElementSibling(node)) { | |
2793 | if (!strcmp((const char *) node->name, | |
2794 | config_element_tracker_targets_legacy)) { | |
2795 | targets_node = node; | |
2796 | break; | |
2797 | } | |
3afa94ae | 2798 | } |
f7af9a72 JG |
2799 | |
2800 | if (!targets_node) { | |
2801 | ret = LTTNG_ERR_INVALID; | |
2802 | goto end; | |
2803 | } | |
2804 | ||
2805 | /* Go through all id target node */ | |
2806 | child_count = xmlChildElementCount(targets_node); | |
2807 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2808 | tracker_handle, | |
2809 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2810 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2811 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2812 | ret = LTTNG_ERR_UNK; | |
2813 | goto end; | |
2814 | } | |
2815 | ||
2816 | /* Add all tracked values. */ | |
2817 | for (node = xmlFirstElementChild(targets_node); node; | |
2818 | node = xmlNextElementSibling(node)) { | |
2819 | xmlNodePtr pid_target_node = node; | |
2820 | ||
2821 | /* get pid_target node and track it */ | |
2822 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2823 | node = xmlNextElementSibling(node)) { | |
2824 | if (!strcmp((const char *) node->name, | |
2825 | config_element_tracker_pid_legacy)) { | |
2826 | int64_t id; | |
2827 | xmlChar *content = xmlNodeGetContent(node); | |
2828 | ||
2829 | if (!content) { | |
2830 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2831 | goto end; | |
2832 | } | |
2833 | ||
2834 | ret = parse_int(content, &id); | |
2835 | free(content); | |
2836 | if (ret) { | |
2837 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2838 | goto end; | |
2839 | } | |
2840 | ||
2841 | switch (process_attr) { | |
2842 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2843 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2844 | tracker_handle, | |
2845 | (pid_t) id); | |
2846 | break; | |
2847 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2848 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2849 | tracker_handle, | |
2850 | (pid_t) id); | |
2851 | break; | |
2852 | default: | |
2853 | ret = LTTNG_ERR_INVALID; | |
2854 | goto end; | |
2855 | } | |
2856 | } | |
2857 | switch (status) { | |
2858 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2859 | continue; | |
2860 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2861 | ret = LTTNG_ERR_INVALID; | |
2862 | break; | |
2863 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2864 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2865 | break; | |
2866 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2867 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2868 | break; | |
2869 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2870 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2871 | default: | |
2872 | ret = LTTNG_ERR_UNK; | |
2873 | goto end; | |
2874 | } | |
2875 | } | |
2876 | node = pid_target_node; | |
2877 | } | |
2878 | ||
2879 | end: | |
2880 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2881 | return ret; | |
2882 | } | |
2883 | ||
55c9e7ca JR |
2884 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2885 | struct lttng_handle *handle, | |
159b042f | 2886 | enum lttng_process_attr process_attr) |
847a5916 | 2887 | { |
159b042f | 2888 | int ret = 0, child_count; |
f7af9a72 | 2889 | xmlNodePtr values_node = NULL; |
847a5916 | 2890 | xmlNodePtr node; |
55c9e7ca JR |
2891 | const char *element_id_tracker; |
2892 | const char *element_target_id; | |
2893 | const char *element_id; | |
2894 | const char *element_id_alias; | |
2895 | const char *element_name; | |
159b042f JG |
2896 | enum lttng_error_code tracker_handle_ret_code; |
2897 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2898 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 | 2899 | |
a0377dfe FD |
2900 | LTTNG_ASSERT(handle); |
2901 | LTTNG_ASSERT(id_tracker_node); | |
55c9e7ca | 2902 | |
159b042f JG |
2903 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2904 | handle->session_name, handle->domain.type, process_attr, | |
2905 | &tracker_handle); | |
2906 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2907 | ret = LTTNG_ERR_INVALID; | |
2908 | goto end; | |
2909 | } | |
2910 | ||
2911 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2912 | &element_target_id, &element_id, &element_id_alias, |
2913 | &element_name); | |
2914 | if (ret) { | |
159b042f | 2915 | goto end; |
55c9e7ca JR |
2916 | } |
2917 | ||
f7af9a72 | 2918 | /* get the values node */ |
55c9e7ca JR |
2919 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2920 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2921 | if (!strcmp((const char *) node->name, |
159b042f | 2922 | config_element_process_attr_values)) { |
f7af9a72 | 2923 | values_node = node; |
847a5916 JR |
2924 | break; |
2925 | } | |
2926 | } | |
2927 | ||
f7af9a72 | 2928 | if (!values_node) { |
847a5916 JR |
2929 | ret = LTTNG_ERR_INVALID; |
2930 | goto end; | |
2931 | } | |
2932 | ||
55c9e7ca | 2933 | /* Go through all id target node */ |
f7af9a72 | 2934 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2935 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2936 | tracker_handle, | |
2937 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2938 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2939 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2940 | ret = LTTNG_ERR_UNK; | |
2941 | goto end; | |
847a5916 | 2942 | } |
159b042f JG |
2943 | |
2944 | /* Add all tracked values. */ | |
f7af9a72 | 2945 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2946 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2947 | xmlNodePtr id_target_node = node; |
847a5916 | 2948 | |
55c9e7ca JR |
2949 | /* get id node and track it */ |
2950 | for (node = xmlFirstElementChild(id_target_node); node; | |
2951 | node = xmlNextElementSibling(node)) { | |
2952 | if (!strcmp((const char *) node->name, element_id) || | |
2953 | (element_id_alias && | |
2954 | !strcmp((const char *) node->name, | |
2955 | element_id_alias))) { | |
2956 | int64_t id; | |
159b042f | 2957 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2958 | |
847a5916 JR |
2959 | if (!content) { |
2960 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2961 | goto end; | |
2962 | } | |
2963 | ||
55c9e7ca | 2964 | ret = parse_int(content, &id); |
847a5916 JR |
2965 | free(content); |
2966 | if (ret) { | |
2967 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2968 | goto end; | |
2969 | } | |
2970 | ||
159b042f JG |
2971 | switch (process_attr) { |
2972 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2973 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2974 | tracker_handle, | |
2975 | (pid_t) id); | |
2976 | break; | |
2977 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2978 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2979 | tracker_handle, | |
2980 | (pid_t) id); | |
2981 | break; | |
2982 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2983 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2984 | tracker_handle, | |
2985 | (uid_t) id); | |
2986 | break; | |
2987 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2988 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2989 | tracker_handle, | |
2990 | (uid_t) id); | |
2991 | break; | |
2992 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2993 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2994 | tracker_handle, | |
2995 | (gid_t) id); | |
2996 | break; | |
2997 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2998 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2999 | tracker_handle, | |
3000 | (gid_t) id); | |
3001 | break; | |
3002 | default: | |
3003 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
3004 | goto end; |
3005 | } | |
159b042f JG |
3006 | } else if (element_name && |
3007 | !strcmp((const char *) node->name, | |
3008 | element_name)) { | |
3009 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 3010 | |
55c9e7ca JR |
3011 | if (!content) { |
3012 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3013 | goto end; | |
3014 | } | |
2d97a006 | 3015 | |
159b042f JG |
3016 | switch (process_attr) { |
3017 | case LTTNG_PROCESS_ATTR_USER_ID: | |
3018 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
3019 | tracker_handle, | |
3020 | (const char *) content); | |
3021 | break; | |
3022 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3023 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
3024 | tracker_handle, | |
3025 | (const char *) content); | |
3026 | break; | |
3027 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3028 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
3029 | tracker_handle, | |
3030 | (const char *) content); | |
3031 | break; | |
3032 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3033 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
3034 | tracker_handle, | |
3035 | (const char *) content); | |
3036 | break; | |
3037 | default: | |
3038 | free(content); | |
3039 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
3040 | goto end; |
3041 | } | |
55c9e7ca | 3042 | free(content); |
159b042f JG |
3043 | } |
3044 | switch (status) { | |
3045 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
3046 | continue; | |
3047 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
3048 | ret = LTTNG_ERR_INVALID; | |
3049 | break; | |
3050 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
3051 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
3052 | break; | |
3053 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
3054 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
3055 | break; | |
3056 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
3057 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
3058 | default: | |
3059 | ret = LTTNG_ERR_UNK; | |
3060 | goto end; | |
847a5916 JR |
3061 | } |
3062 | } | |
55c9e7ca | 3063 | node = id_target_node; |
847a5916 JR |
3064 | } |
3065 | ||
3066 | end: | |
159b042f | 3067 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
3068 | return ret; |
3069 | } | |
3070 | ||
dcf266c0 JG |
3071 | static |
3072 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
3073 | { | |
3074 | int ret; | |
3afa94ae | 3075 | struct lttng_domain domain {}; |
dcf266c0 | 3076 | struct lttng_handle *handle = NULL; |
4fc2b126 | 3077 | struct lttng_channel *channel = NULL; |
dcf266c0 | 3078 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
3079 | xmlNodePtr trackers_node = NULL; |
3080 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
3081 | xmlNodePtr vpid_tracker_node = NULL; |
3082 | xmlNodePtr uid_tracker_node = NULL; | |
3083 | xmlNodePtr vuid_tracker_node = NULL; | |
3084 | xmlNodePtr gid_tracker_node = NULL; | |
3085 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
3086 | xmlNodePtr node; |
3087 | ||
a0377dfe | 3088 | LTTNG_ASSERT(session_name); |
dcf266c0 JG |
3089 | |
3090 | ret = init_domain(domain_node, &domain); | |
3091 | if (ret) { | |
3092 | goto end; | |
3093 | } | |
3094 | ||
3095 | handle = lttng_create_handle(session_name, &domain); | |
3096 | if (!handle) { | |
3097 | ret = -LTTNG_ERR_NOMEM; | |
3098 | goto end; | |
3099 | } | |
3100 | ||
3101 | /* get the channels node */ | |
3102 | for (node = xmlFirstElementChild(domain_node); node; | |
3103 | node = xmlNextElementSibling(node)) { | |
3104 | if (!strcmp((const char *) node->name, | |
3105 | config_element_channels)) { | |
3106 | channels_node = node; | |
3107 | break; | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | if (!channels_node) { | |
3112 | goto end; | |
3113 | } | |
3114 | ||
3115 | /* create all channels */ | |
3116 | for (node = xmlFirstElementChild(channels_node); node; | |
3117 | node = xmlNextElementSibling(node)) { | |
36d1687c | 3118 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
3119 | xmlNodePtr contexts_node = NULL; |
3120 | xmlNodePtr events_node = NULL; | |
3121 | xmlNodePtr channel_attr_node; | |
3122 | ||
36d1687c JG |
3123 | /* |
3124 | * Channels of the "agent" types cannot be created directly. | |
3125 | * They are meant to be created implicitly through the | |
3126 | * activation of events in their domain. However, a user | |
3127 | * can override the default channel configuration attributes | |
3128 | * by creating the underlying UST channel _before_ enabling | |
3129 | * an agent domain event. | |
3130 | * | |
3131 | * Hence, the channel's type is substituted before the creation | |
3132 | * and restored by the time the events are created. | |
3133 | */ | |
3134 | switch (domain.type) { | |
3135 | case LTTNG_DOMAIN_JUL: | |
3136 | case LTTNG_DOMAIN_LOG4J: | |
3137 | case LTTNG_DOMAIN_PYTHON: | |
3138 | domain.type = LTTNG_DOMAIN_UST; | |
3139 | default: | |
3140 | break; | |
3141 | } | |
3142 | ||
4fc2b126 JR |
3143 | channel = lttng_channel_create(&domain); |
3144 | if (!channel) { | |
3145 | ret = -1; | |
3146 | goto end; | |
3147 | } | |
dcf266c0 JG |
3148 | |
3149 | for (channel_attr_node = xmlFirstElementChild(node); | |
3150 | channel_attr_node; channel_attr_node = | |
3151 | xmlNextElementSibling(channel_attr_node)) { | |
3152 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 3153 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
3154 | if (ret) { |
3155 | goto end; | |
3156 | } | |
3157 | } | |
3158 | ||
4fc2b126 | 3159 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3160 | if (ret < 0) { |
3161 | goto end; | |
3162 | } | |
3163 | ||
36d1687c JG |
3164 | /* Restore the original channel domain. */ |
3165 | domain.type = original_domain; | |
3166 | ||
4fc2b126 | 3167 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3168 | if (ret) { |
3169 | goto end; | |
3170 | } | |
3171 | ||
3172 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3173 | channel->name); |
dcf266c0 JG |
3174 | if (ret) { |
3175 | goto end; | |
3176 | } | |
4fc2b126 JR |
3177 | |
3178 | lttng_channel_destroy(channel); | |
dcf266c0 | 3179 | } |
4fc2b126 | 3180 | channel = NULL; |
847a5916 JR |
3181 | |
3182 | /* get the trackers node */ | |
3183 | for (node = xmlFirstElementChild(domain_node); node; | |
3184 | node = xmlNextElementSibling(node)) { | |
3185 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3186 | config_element_process_attr_trackers) || |
3187 | !strcmp((const char *) node->name, | |
3188 | config_element_trackers_legacy)) { | |
3189 | if (trackers_node) { | |
3190 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3191 | config_element_process_attr_trackers, | |
3192 | config_element_trackers_legacy); | |
3193 | ret = -1; | |
3194 | goto end; | |
3195 | } | |
847a5916 JR |
3196 | trackers_node = node; |
3197 | break; | |
3198 | } | |
3199 | } | |
3200 | ||
3201 | if (!trackers_node) { | |
3202 | goto end; | |
3203 | } | |
3204 | ||
3205 | for (node = xmlFirstElementChild(trackers_node); node; | |
3206 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3207 | if (!strcmp((const char *) node->name, |
159b042f | 3208 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3209 | pid_tracker_node = node; |
55c9e7ca | 3210 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3211 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3212 | if (ret) { |
3213 | goto end; | |
3214 | } | |
3215 | } | |
3216 | if (!strcmp((const char *) node->name, | |
159b042f | 3217 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3218 | vpid_tracker_node = node; |
3219 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3220 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3221 | if (ret) { |
3222 | goto end; | |
3223 | } | |
3224 | } | |
3225 | if (!strcmp((const char *) node->name, | |
159b042f | 3226 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3227 | uid_tracker_node = node; |
3228 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3229 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3230 | if (ret) { |
3231 | goto end; | |
3232 | } | |
3233 | } | |
3234 | if (!strcmp((const char *) node->name, | |
159b042f | 3235 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3236 | vuid_tracker_node = node; |
3237 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3238 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3239 | if (ret) { |
3240 | goto end; | |
3241 | } | |
3242 | } | |
3243 | if (!strcmp((const char *) node->name, | |
159b042f | 3244 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3245 | gid_tracker_node = node; |
3246 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3247 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3248 | if (ret) { |
3249 | goto end; | |
3250 | } | |
3251 | } | |
3252 | if (!strcmp((const char *) node->name, | |
159b042f | 3253 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3254 | vgid_tracker_node = node; |
3255 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3256 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3257 | if (ret) { |
3258 | goto end; | |
3259 | } | |
3260 | } | |
f7af9a72 JG |
3261 | if (!strcmp((const char *) node->name, |
3262 | config_element_pid_tracker_legacy)) { | |
3263 | ret = process_legacy_pid_tracker_node(node, handle); | |
3264 | if (ret) { | |
3265 | goto end; | |
3266 | } | |
3267 | } | |
847a5916 JR |
3268 | } |
3269 | ||
dcf266c0 | 3270 | end: |
4fc2b126 | 3271 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3272 | lttng_destroy_handle(handle); |
3273 | return ret; | |
3274 | } | |
3275 | ||
66ea93b1 JG |
3276 | static |
3277 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3278 | { | |
3279 | int ret; | |
3280 | enum lttng_rotation_status status; | |
3281 | struct lttng_rotation_schedule *periodic = | |
3282 | lttng_rotation_schedule_periodic_create(); | |
3283 | ||
3284 | if (!periodic) { | |
3285 | ret = -LTTNG_ERR_NOMEM; | |
3286 | goto error; | |
3287 | } | |
3288 | ||
3289 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3290 | time_us); | |
3291 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3292 | ret = -LTTNG_ERR_INVALID; | |
3293 | goto error; | |
3294 | } | |
3295 | ||
3296 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3297 | switch (status) { | |
3298 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3299 | ret = 0; |
66ea93b1 JG |
3300 | break; |
3301 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3302 | case LTTNG_ROTATION_STATUS_INVALID: | |
3303 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3304 | break; | |
3305 | default: | |
3306 | ret = -LTTNG_ERR_UNK; | |
3307 | break; | |
3308 | } | |
3309 | error: | |
3310 | lttng_rotation_schedule_destroy(periodic); | |
3311 | return ret; | |
3312 | } | |
3313 | ||
3314 | static | |
3315 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3316 | { | |
3317 | int ret; | |
3318 | enum lttng_rotation_status status; | |
3319 | struct lttng_rotation_schedule *size = | |
3320 | lttng_rotation_schedule_size_threshold_create(); | |
3321 | ||
3322 | if (!size) { | |
3323 | ret = -LTTNG_ERR_NOMEM; | |
3324 | goto error; | |
3325 | } | |
3326 | ||
3327 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3328 | size_bytes); | |
3329 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3330 | ret = -LTTNG_ERR_INVALID; | |
3331 | goto error; | |
3332 | } | |
3333 | ||
3334 | status = lttng_session_add_rotation_schedule(name, size); | |
3335 | switch (status) { | |
3336 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3337 | ret = 0; |
66ea93b1 JG |
3338 | break; |
3339 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3340 | case LTTNG_ROTATION_STATUS_INVALID: | |
3341 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3342 | break; | |
3343 | default: | |
3344 | ret = -LTTNG_ERR_UNK; | |
3345 | break; | |
3346 | } | |
3347 | error: | |
3348 | lttng_rotation_schedule_destroy(size); | |
3349 | return ret; | |
3350 | } | |
3351 | ||
ce6176f2 JG |
3352 | static |
3353 | int process_session_rotation_schedules_node( | |
3354 | xmlNodePtr schedules_node, | |
3355 | uint64_t *rotation_timer_interval, | |
3356 | uint64_t *rotation_size) | |
3357 | { | |
3358 | int ret = 0; | |
3359 | xmlNodePtr child; | |
3360 | ||
3361 | for (child = xmlFirstElementChild(schedules_node); | |
3362 | child; | |
3363 | child = xmlNextElementSibling(child)) { | |
3364 | if (!strcmp((const char *) child->name, | |
3365 | config_element_rotation_schedule_periodic)) { | |
3366 | xmlChar *content; | |
3367 | xmlNodePtr time_us_node; | |
3368 | ||
3369 | /* periodic rotation schedule */ | |
3370 | time_us_node = xmlFirstElementChild(child); | |
3371 | if (!time_us_node || | |
3372 | strcmp((const char *) time_us_node->name, | |
3373 | config_element_rotation_schedule_periodic_time_us)) { | |
3374 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3375 | goto end; | |
3376 | } | |
3377 | ||
3378 | /* time_us child */ | |
3379 | content = xmlNodeGetContent(time_us_node); | |
3380 | if (!content) { | |
3381 | ret = -LTTNG_ERR_NOMEM; | |
3382 | goto end; | |
3383 | } | |
3384 | ret = parse_uint(content, rotation_timer_interval); | |
3385 | free(content); | |
3386 | if (ret) { | |
3387 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3388 | goto end; | |
3389 | } | |
3390 | } else if (!strcmp((const char *) child->name, | |
3391 | config_element_rotation_schedule_size_threshold)) { | |
3392 | xmlChar *content; | |
3393 | xmlNodePtr bytes_node; | |
3394 | ||
3395 | /* size_threshold rotation schedule */ | |
3396 | bytes_node = xmlFirstElementChild(child); | |
3397 | if (!bytes_node || | |
3398 | strcmp((const char *) bytes_node->name, | |
3399 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3400 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3401 | goto end; | |
3402 | } | |
3403 | ||
3404 | /* bytes child */ | |
3405 | content = xmlNodeGetContent(bytes_node); | |
3406 | if (!content) { | |
3407 | ret = -LTTNG_ERR_NOMEM; | |
3408 | goto end; | |
3409 | } | |
3410 | ret = parse_uint(content, rotation_size); | |
3411 | free(content); | |
3412 | if (ret) { | |
3413 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3414 | goto end; | |
3415 | } | |
3416 | } | |
3417 | } | |
3418 | ||
3419 | end: | |
3420 | return ret; | |
3421 | } | |
3422 | ||
dcf266c0 JG |
3423 | static |
3424 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3425 | int overwrite, |
3426 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3427 | { |
3428 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3429 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3430 | rotation_timer_interval = 0, |
3431 | rotation_size = 0; | |
d324faf7 | 3432 | xmlChar *name = NULL; |
9e7c9f56 | 3433 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3434 | xmlNodePtr domains_node = NULL; |
3435 | xmlNodePtr output_node = NULL; | |
3436 | xmlNodePtr node; | |
90936dcf | 3437 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3438 | struct lttng_domain *kernel_domain = NULL; |
3439 | struct lttng_domain *ust_domain = NULL; | |
3440 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3441 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3442 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3443 | |
3444 | for (node = xmlFirstElementChild(session_node); node; | |
3445 | node = xmlNextElementSibling(node)) { | |
3446 | if (!name && !strcmp((const char *) node->name, | |
3447 | config_element_name)) { | |
3448 | /* name */ | |
3449 | xmlChar *node_content = xmlNodeGetContent(node); | |
3450 | if (!node_content) { | |
3451 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3452 | goto error; |
dcf266c0 JG |
3453 | } |
3454 | ||
d324faf7 | 3455 | name = node_content; |
dcf266c0 JG |
3456 | } else if (!domains_node && !strcmp((const char *) node->name, |
3457 | config_element_domains)) { | |
3458 | /* domains */ | |
3459 | domains_node = node; | |
3460 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3461 | config_element_started)) { | |
3462 | /* started */ | |
3463 | xmlChar *node_content = xmlNodeGetContent(node); | |
3464 | if (!node_content) { | |
3465 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3466 | goto error; |
dcf266c0 JG |
3467 | } |
3468 | ||
3469 | ret = parse_bool(node_content, &started); | |
3470 | free(node_content); | |
3471 | if (ret) { | |
3472 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3473 | goto error; |
dcf266c0 JG |
3474 | } |
3475 | } else if (!output_node && !strcmp((const char *) node->name, | |
3476 | config_element_output)) { | |
3477 | /* output */ | |
3478 | output_node = node; | |
9e7c9f56 JR |
3479 | } else if (!shm_path && !strcmp((const char *) node->name, |
3480 | config_element_shared_memory_path)) { | |
3481 | /* shared memory path */ | |
3482 | xmlChar *node_content = xmlNodeGetContent(node); | |
3483 | if (!node_content) { | |
3484 | ret = -LTTNG_ERR_NOMEM; | |
3485 | goto error; | |
3486 | } | |
3487 | ||
3488 | shm_path = node_content; | |
dcf266c0 | 3489 | } else { |
259c2674 JD |
3490 | /* |
3491 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3492 | * rotation_timer_interval. |
3493 | */ | |
3494 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3495 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3496 | if (!strcmp((const char *) attributes_child->name, | |
3497 | config_element_snapshot_mode)) { | |
3498 | /* snapshot_mode */ | |
3499 | xmlChar *snapshot_mode_content = | |
3500 | xmlNodeGetContent(attributes_child); | |
3501 | if (!snapshot_mode_content) { | |
3502 | ret = -LTTNG_ERR_NOMEM; | |
3503 | goto error; | |
3504 | } | |
dcf266c0 | 3505 | |
90936dcf JD |
3506 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3507 | free(snapshot_mode_content); | |
3508 | if (ret) { | |
3509 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3510 | goto error; | |
3511 | } | |
3512 | } else if (!strcmp((const char *) attributes_child->name, | |
3513 | config_element_live_timer_interval)) { | |
3514 | /* live_timer_interval */ | |
3515 | xmlChar *timer_interval_content = | |
3516 | xmlNodeGetContent(attributes_child); | |
3517 | if (!timer_interval_content) { | |
3518 | ret = -LTTNG_ERR_NOMEM; | |
3519 | goto error; | |
3520 | } | |
dcf266c0 | 3521 | |
90936dcf JD |
3522 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3523 | free(timer_interval_content); | |
3524 | if (ret) { | |
3525 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3526 | goto error; | |
3527 | } | |
ce6176f2 JG |
3528 | } else if (!strcmp((const char *) attributes_child->name, |
3529 | config_element_rotation_schedules)) { | |
3530 | ret = process_session_rotation_schedules_node( | |
3531 | attributes_child, | |
3532 | &rotation_timer_interval, | |
3533 | &rotation_size); | |
90936dcf JD |
3534 | if (ret) { |
3535 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3536 | goto error; | |
3537 | } | |
259c2674 | 3538 | |
259c2674 JD |
3539 | } |
3540 | } | |
dcf266c0 JG |
3541 | } |
3542 | } | |
3543 | ||
3544 | if (!name) { | |
3545 | /* Mandatory attribute, as defined in the session XSD */ | |
3546 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3547 | goto error; |
dcf266c0 JG |
3548 | } |
3549 | ||
d324faf7 | 3550 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3551 | /* This is not the session we are looking for */ |
c2da8cde DG |
3552 | ret = -LTTNG_ERR_NO_SESSION; |
3553 | goto error; | |
dcf266c0 JG |
3554 | } |
3555 | ||
3556 | /* Init domains to create the session handles */ | |
3557 | for (node = xmlFirstElementChild(domains_node); node; | |
3558 | node = xmlNextElementSibling(node)) { | |
3559 | struct lttng_domain *domain; | |
3560 | ||
3afa94ae | 3561 | domain = (lttng_domain *) zmalloc(sizeof(*domain)); |
dcf266c0 JG |
3562 | if (!domain) { |
3563 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3564 | goto error; |
dcf266c0 JG |
3565 | } |
3566 | ||
3567 | ret = init_domain(node, domain); | |
3568 | if (ret) { | |
3569 | goto domain_init_error; | |
3570 | } | |
3571 | ||
3572 | switch (domain->type) { | |
3573 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3574 | if (kernel_domain) { |
3575 | /* Same domain seen twice, invalid! */ | |
3576 | goto domain_init_error; | |
3577 | } | |
dcf266c0 JG |
3578 | kernel_domain = domain; |
3579 | break; | |
3580 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3581 | if (ust_domain) { |
3582 | /* Same domain seen twice, invalid! */ | |
3583 | goto domain_init_error; | |
3584 | } | |
dcf266c0 JG |
3585 | ust_domain = domain; |
3586 | break; | |
3587 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3588 | if (jul_domain) { |
3589 | /* Same domain seen twice, invalid! */ | |
3590 | goto domain_init_error; | |
3591 | } | |
dcf266c0 JG |
3592 | jul_domain = domain; |
3593 | break; | |
5cdb6027 DG |
3594 | case LTTNG_DOMAIN_LOG4J: |
3595 | if (log4j_domain) { | |
3596 | /* Same domain seen twice, invalid! */ | |
3597 | goto domain_init_error; | |
3598 | } | |
3599 | log4j_domain = domain; | |
3600 | break; | |
0e115563 DG |
3601 | case LTTNG_DOMAIN_PYTHON: |
3602 | if (python_domain) { | |
3603 | /* Same domain seen twice, invalid! */ | |
3604 | goto domain_init_error; | |
3605 | } | |
3606 | python_domain = domain; | |
3607 | break; | |
dcf266c0 JG |
3608 | default: |
3609 | WARN("Invalid domain type"); | |
3610 | goto domain_init_error; | |
3611 | } | |
3612 | continue; | |
3613 | domain_init_error: | |
3614 | free(domain); | |
3615 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3616 | goto error; |
dcf266c0 JG |
3617 | } |
3618 | ||
2aaf5fc7 JR |
3619 | /* Apply overrides */ |
3620 | if (overrides) { | |
3621 | if (overrides->session_name) { | |
3622 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3623 | if (!name_override) { | |
3624 | ret = -LTTNG_ERR_NOMEM; | |
3625 | goto error; | |
3626 | } | |
3627 | ||
3628 | /* Overrides the session name to the provided name */ | |
3629 | xmlFree(name); | |
3630 | name = name_override; | |
3631 | } | |
3632 | } | |
3633 | ||
40b4155f | 3634 | if (overwrite) { |
dcf266c0 | 3635 | /* Destroy session if it exists */ |
d324faf7 | 3636 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3637 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3638 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3639 | goto error; |
dcf266c0 JG |
3640 | } |
3641 | } | |
3642 | ||
3643 | /* Create session type depending on output type */ | |
3644 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3645 | ret = create_snapshot_session((const char *) name, output_node, |
3646 | overrides); | |
dcf266c0 JG |
3647 | } else if (live_timer_interval && |
3648 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3649 | ret = create_session((const char *) name, |
1b08cbce | 3650 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3651 | } else { |
3652 | /* regular session */ | |
194dfca0 | 3653 | ret = create_session((const char *) name, |
1b08cbce | 3654 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3655 | } |
dcf266c0 | 3656 | if (ret) { |
c2da8cde | 3657 | goto error; |
dcf266c0 JG |
3658 | } |
3659 | ||
9e7c9f56 JR |
3660 | if (shm_path) { |
3661 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3662 | (const char *) shm_path); |
9e7c9f56 JR |
3663 | if (ret) { |
3664 | goto error; | |
3665 | } | |
3666 | } | |
3667 | ||
dcf266c0 JG |
3668 | for (node = xmlFirstElementChild(domains_node); node; |
3669 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3670 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3671 | if (ret) { |
3672 | goto end; | |
3673 | } | |
3674 | } | |
3675 | ||
66ea93b1 JG |
3676 | if (rotation_timer_interval) { |
3677 | ret = add_periodic_rotation((const char *) name, | |
3678 | rotation_timer_interval); | |
3679 | if (ret < 0) { | |
259c2674 JD |
3680 | goto error; |
3681 | } | |
66ea93b1 JG |
3682 | } |
3683 | if (rotation_size) { | |
3684 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3685 | rotation_size); |
66ea93b1 | 3686 | if (ret < 0) { |
259c2674 JD |
3687 | goto error; |
3688 | } | |
3689 | } | |
3690 | ||
dcf266c0 | 3691 | if (started) { |
d324faf7 | 3692 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3693 | if (ret) { |
3694 | goto end; | |
3695 | } | |
3696 | } | |
c2da8cde | 3697 | |
dcf266c0 | 3698 | end: |
b2579dc1 | 3699 | if (ret < 0) { |
d324faf7 JG |
3700 | ERR("Failed to load session %s: %s", (const char *) name, |
3701 | lttng_strerror(ret)); | |
3702 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3703 | } |
3704 | ||
c2da8cde | 3705 | error: |
dcf266c0 JG |
3706 | free(kernel_domain); |
3707 | free(ust_domain); | |
3708 | free(jul_domain); | |
5cdb6027 | 3709 | free(log4j_domain); |
135a3893 | 3710 | free(python_domain); |
d324faf7 | 3711 | xmlFree(name); |
9e7c9f56 | 3712 | xmlFree(shm_path); |
dcf266c0 JG |
3713 | return ret; |
3714 | } | |
3715 | ||
cf53c06d DG |
3716 | /* |
3717 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3718 | * Return -1 if the path is EPERM. | |
3719 | */ | |
3720 | static int validate_file_read_creds(const char *path) | |
3721 | { | |
3722 | int ret; | |
3723 | ||
a0377dfe | 3724 | LTTNG_ASSERT(path); |
cf53c06d DG |
3725 | |
3726 | /* Can we read the file. */ | |
3727 | ret = access(path, R_OK); | |
3728 | if (!ret) { | |
3729 | goto valid; | |
3730 | } | |
3731 | if (errno == EACCES) { | |
3732 | return -1; | |
3733 | } else { | |
3734 | /* Invalid. */ | |
3735 | return 0; | |
3736 | } | |
3737 | valid: | |
3738 | return 1; | |
3739 | } | |
3740 | ||
dcf266c0 JG |
3741 | static |
3742 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3743 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3744 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3745 | { |
3746 | int ret, session_found = !session_name; | |
3747 | xmlDocPtr doc = NULL; | |
3748 | xmlNodePtr sessions_node; | |
3749 | xmlNodePtr session_node; | |
dcf266c0 | 3750 | |
a0377dfe FD |
3751 | LTTNG_ASSERT(path); |
3752 | LTTNG_ASSERT(validation_ctx); | |
dcf266c0 | 3753 | |
cf53c06d DG |
3754 | ret = validate_file_read_creds(path); |
3755 | if (ret != 1) { | |
3756 | if (ret == -1) { | |
3757 | ret = -LTTNG_ERR_EPERM; | |
3758 | } else { | |
3759 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3760 | } | |
dcf266c0 JG |
3761 | goto end; |
3762 | } | |
3763 | ||
3764 | doc = xmlParseFile(path); | |
3765 | if (!doc) { | |
3766 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3767 | goto end; | |
3768 | } | |
3769 | ||
3770 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3771 | if (ret) { | |
3772 | ERR("Session configuration file validation failed"); | |
3773 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3774 | goto end; | |
3775 | } | |
3776 | ||
3777 | sessions_node = xmlDocGetRootElement(doc); | |
3778 | if (!sessions_node) { | |
55c9e7ca | 3779 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3780 | goto end; |
3781 | } | |
3782 | ||
3783 | for (session_node = xmlFirstElementChild(sessions_node); | |
3784 | session_node; session_node = | |
3785 | xmlNextElementSibling(session_node)) { | |
3786 | ret = process_session_node(session_node, | |
1b08cbce | 3787 | session_name, overwrite, overrides); |
317ea246 JG |
3788 | if (!session_name && ret) { |
3789 | /* Loading error occurred. */ | |
3790 | goto end; | |
3791 | } else if (session_name) { | |
3792 | if (ret == 0) { | |
3793 | /* Target session found and loaded */ | |
3794 | session_found = 1; | |
3795 | break; | |
3796 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3797 | /* | |
3798 | * Ignore this error, we are looking for a | |
3799 | * specific session. | |
3800 | */ | |
3801 | ret = 0; | |
3802 | } else { | |
3803 | /* Loading error occurred. */ | |
3804 | goto end; | |
3805 | } | |
dcf266c0 JG |
3806 | } |
3807 | } | |
3808 | end: | |
3809 | xmlFreeDoc(doc); | |
3810 | if (!ret) { | |
a96bc65d | 3811 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3812 | } |
3813 | return ret; | |
3814 | } | |
3815 | ||
3816 | static | |
3817 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3818 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3819 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3820 | { |
3821 | int ret, session_found = !session_name; | |
dcf266c0 | 3822 | DIR *directory = NULL; |
cce35f91 JG |
3823 | struct lttng_dynamic_buffer file_path; |
3824 | size_t path_len; | |
dcf266c0 | 3825 | |
a0377dfe FD |
3826 | LTTNG_ASSERT(path); |
3827 | LTTNG_ASSERT(validation_ctx); | |
cce35f91 JG |
3828 | path_len = strlen(path); |
3829 | lttng_dynamic_buffer_init(&file_path); | |
3830 | if (path_len >= LTTNG_PATH_MAX) { | |
3831 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3832 | path, path_len, LTTNG_PATH_MAX); | |
3833 | ret = -LTTNG_ERR_INVALID; | |
3834 | goto end; | |
3835 | } | |
dcf266c0 | 3836 | |
4af16958 DG |
3837 | directory = opendir(path); |
3838 | if (!directory) { | |
11143783 DG |
3839 | switch (errno) { |
3840 | case ENOTDIR: | |
0f0a81b5 DG |
3841 | /* Try the file loading. */ |
3842 | break; | |
11143783 DG |
3843 | case ENOENT: |
3844 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3845 | goto end; | |
3846 | default: | |
0f0a81b5 DG |
3847 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3848 | goto end; | |
4af16958 | 3849 | } |
dcf266c0 | 3850 | } |
4af16958 | 3851 | if (directory) { |
cce35f91 | 3852 | size_t file_path_root_len; |
dcf266c0 | 3853 | |
cce35f91 JG |
3854 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3855 | LTTNG_PATH_MAX); | |
3856 | if (ret) { | |
3857 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3858 | goto end; |
3859 | } | |
3860 | ||
cce35f91 JG |
3861 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3862 | if (ret) { | |
dcf266c0 | 3863 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3864 | goto end; |
3865 | } | |
3866 | ||
cce35f91 JG |
3867 | if (file_path.data[file_path.size - 1] != '/') { |
3868 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3869 | if (ret) { | |
3870 | ret = -LTTNG_ERR_NOMEM; | |
3871 | goto end; | |
3872 | } | |
dcf266c0 | 3873 | } |
cce35f91 | 3874 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3875 | |
3876 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3877 | for (;;) { |
3878 | size_t file_name_len; | |
3879 | struct dirent *result; | |
3880 | ||
3881 | /* | |
3882 | * When the end of the directory stream is reached, NULL | |
3883 | * is returned and errno is kept unchanged. When an | |
3884 | * error occurs, NULL is returned and errno is set | |
3885 | * accordingly. To distinguish between the two, set | |
3886 | * errno to zero before calling readdir(). | |
3887 | * | |
3888 | * On success, readdir() returns a pointer to a dirent | |
3889 | * structure. This structure may be statically | |
3890 | * allocated, do not attempt to free(3) it. | |
3891 | */ | |
3892 | errno = 0; | |
3893 | result = readdir(directory); | |
3894 | ||
ff86d8d0 | 3895 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3896 | if (!result) { |
3897 | if (errno) { | |
3898 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3899 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3900 | goto end; | |
3901 | } | |
3902 | break; | |
3903 | } | |
3904 | ||
3905 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3906 | |
3907 | if (file_name_len <= | |
3908 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3909 | continue; | |
3910 | } | |
3911 | ||
cce35f91 JG |
3912 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3913 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3914 | result->d_name, | |
3915 | /* +1 to account for NULL terminator. */ | |
3916 | file_path.size + file_name_len + 1, | |
3917 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3918 | continue; |
3919 | } | |
3920 | ||
cce35f91 | 3921 | /* Does the file end with .lttng? */ |
dcf266c0 | 3922 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3923 | result->d_name + file_name_len - sizeof( |
3924 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3925 | continue; |
3926 | } | |
3927 | ||
cce35f91 JG |
3928 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3929 | file_name_len + 1); | |
3930 | if (ret) { | |
3931 | ret = -LTTNG_ERR_NOMEM; | |
3932 | goto end; | |
3933 | } | |
dcf266c0 | 3934 | |
cce35f91 | 3935 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3936 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3937 | if (session_name && |
3938 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3939 | session_found = 1; |
3940 | break; | |
3941 | } | |
55c9e7ca JR |
3942 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3943 | goto end; | |
3944 | } | |
cce35f91 JG |
3945 | /* |
3946 | * Reset the buffer's size to the location of the | |
3947 | * path's trailing '/'. | |
3948 | */ | |
3949 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3950 | file_path_root_len); | |
3951 | if (ret) { | |
3952 | ret = -LTTNG_ERR_UNK; | |
3953 | goto end; | |
3954 | } | |
dcf266c0 | 3955 | } |
dcf266c0 JG |
3956 | } else { |
3957 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3958 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3959 | if (ret) { |
3960 | goto end; | |
dcf266c0 | 3961 | } |
55c9e7ca | 3962 | session_found = 1; |
dcf266c0 JG |
3963 | } |
3964 | ||
55c9e7ca | 3965 | ret = 0; |
dcf266c0 JG |
3966 | end: |
3967 | if (directory) { | |
3968 | if (closedir(directory)) { | |
3969 | PERROR("closedir"); | |
3970 | } | |
3971 | } | |
55c9e7ca JR |
3972 | if (!ret && !session_found) { |
3973 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3974 | } |
cce35f91 | 3975 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3976 | return ret; |
3977 | } | |
3978 | ||
ab38c13f DG |
3979 | /* |
3980 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3981 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3982 | */ |
3983 | static int validate_path_creds(const char *path) | |
3984 | { | |
3985 | int ret, uid = getuid(); | |
3986 | struct stat buf; | |
3987 | ||
a0377dfe | 3988 | LTTNG_ASSERT(path); |
ab38c13f | 3989 | |
cf53c06d | 3990 | if (uid == 0) { |
ab38c13f DG |
3991 | goto valid; |
3992 | } | |
3993 | ||
3994 | ret = stat(path, &buf); | |
3995 | if (ret < 0) { | |
3996 | if (errno != ENOENT) { | |
3997 | PERROR("stat"); | |
3998 | } | |
ab38c13f DG |
3999 | goto valid; |
4000 | } | |
4001 | ||
4002 | if (buf.st_uid != uid) { | |
4003 | goto invalid; | |
4004 | } | |
4005 | ||
4006 | valid: | |
ab38c13f | 4007 | return 1; |
cf53c06d DG |
4008 | invalid: |
4009 | return 0; | |
ab38c13f DG |
4010 | } |
4011 | ||
dcf266c0 | 4012 | int config_load_session(const char *path, const char *session_name, |
1b08cbce JR |
4013 | int overwrite, unsigned int autoload, |
4014 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4015 | { |
4016 | int ret; | |
6c66fa0f | 4017 | bool session_loaded = false; |
cf53c06d | 4018 | const char *path_ptr = NULL; |
dcf266c0 JG |
4019 | struct session_config_validation_ctx validation_ctx = { 0 }; |
4020 | ||
4021 | ret = init_session_config_validation_ctx(&validation_ctx); | |
4022 | if (ret) { | |
4023 | goto end; | |
4024 | } | |
4025 | ||
4026 | if (!path) { | |
4f00620d | 4027 | const char *home_path; |
ab38c13f DG |
4028 | const char *sys_path; |
4029 | ||
dcf266c0 | 4030 | /* Try home path */ |
ab38c13f | 4031 | home_path = utils_get_home_dir(); |
dcf266c0 | 4032 | if (home_path) { |
db8196db | 4033 | char path_buf[PATH_MAX]; |
dcf266c0 | 4034 | |
d4fcf703 DG |
4035 | /* |
4036 | * Try user session configuration path. Ignore error here so we can | |
4037 | * continue loading the system wide sessions. | |
4038 | */ | |
ab38c13f | 4039 | if (autoload) { |
db8196db SM |
4040 | ret = snprintf(path_buf, sizeof(path_buf), |
4041 | DEFAULT_SESSION_HOME_CONFIGPATH | |
4042 | "/" DEFAULT_SESSION_CONFIG_AUTOLOAD, | |
4043 | home_path); | |
cf53c06d DG |
4044 | if (ret < 0) { |
4045 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 4046 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4047 | goto end; |
4048 | } | |
4049 | ||
4050 | /* | |
4051 | * Credentials are only validated for the autoload in order to | |
4052 | * avoid any user session daemon to try to load kernel sessions | |
4053 | * automatically and failing all the times. | |
4054 | */ | |
db8196db | 4055 | ret = validate_path_creds(path_buf); |
cf53c06d | 4056 | if (ret) { |
db8196db | 4057 | path_ptr = path_buf; |
cf53c06d | 4058 | } |
ab38c13f | 4059 | } else { |
db8196db SM |
4060 | ret = snprintf(path_buf, sizeof(path_buf), |
4061 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
4062 | home_path); | |
cf53c06d DG |
4063 | if (ret < 0) { |
4064 | PERROR("snprintf session home config path"); | |
55c9e7ca | 4065 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4066 | goto end; |
4067 | } | |
db8196db | 4068 | path_ptr = path_buf; |
ab38c13f | 4069 | } |
cf53c06d DG |
4070 | if (path_ptr) { |
4071 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4072 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
4073 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4074 | goto end; | |
4075 | } | |
4076 | /* | |
4077 | * Continue even if the session was found since we have to try | |
4078 | * the system wide sessions. | |
4079 | */ | |
6c66fa0f | 4080 | session_loaded = true; |
ab38c13f | 4081 | } |
d4fcf703 | 4082 | } |
ab38c13f | 4083 | |
cf53c06d DG |
4084 | /* Reset path pointer for the system wide dir. */ |
4085 | path_ptr = NULL; | |
4086 | ||
d4fcf703 DG |
4087 | /* Try system wide configuration directory. */ |
4088 | if (autoload) { | |
4089 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
4090 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
4091 | ret = validate_path_creds(sys_path); |
4092 | if (ret) { | |
4093 | path_ptr = sys_path; | |
4094 | } | |
d4fcf703 | 4095 | } else { |
cf53c06d DG |
4096 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
4097 | path_ptr = sys_path; | |
d4fcf703 DG |
4098 | } |
4099 | ||
cf53c06d DG |
4100 | if (path_ptr) { |
4101 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4102 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
4103 | if (!ret) { |
4104 | session_loaded = true; | |
4105 | } | |
55c9e7ca JR |
4106 | } else { |
4107 | ret = 0; | |
dcf266c0 JG |
4108 | } |
4109 | } else { | |
4110 | ret = access(path, F_OK); | |
4111 | if (ret < 0) { | |
4112 | PERROR("access"); | |
4113 | switch (errno) { | |
4114 | case ENOENT: | |
4115 | ret = -LTTNG_ERR_INVALID; | |
4116 | WARN("Session configuration path does not exist."); | |
4117 | break; | |
4118 | case EACCES: | |
4119 | ret = -LTTNG_ERR_EPERM; | |
4120 | break; | |
4121 | default: | |
4122 | ret = -LTTNG_ERR_UNK; | |
4123 | break; | |
4124 | } | |
4125 | goto end; | |
4126 | } | |
4127 | ||
4128 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 4129 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4130 | } |
4131 | end: | |
4132 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
4133 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
4134 | /* | |
4135 | * Don't report an error if no sessions are found when called | |
4136 | * without a session_name or a search path. | |
4137 | */ | |
4138 | ret = 0; | |
4139 | } | |
6c66fa0f JG |
4140 | |
4141 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
4142 | /* A matching session was found in one of the search paths. */ | |
4143 | ret = 0; | |
4144 | } | |
dcf266c0 JG |
4145 | return ret; |
4146 | } | |
56766c75 JG |
4147 | |
4148 | static | |
4149 | void __attribute__((destructor)) session_config_exit(void) | |
4150 | { | |
4151 | xmlCleanupParser(); | |
4152 | } |