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 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
1501a7f3 | 9 | #include <assert.h> |
1501a7f3 | 10 | #include <ctype.h> |
1501a7f3 JG |
11 | #include <stdio.h> |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
36f2332b | 14 | #include <inttypes.h> |
dcf266c0 JG |
15 | #include <dirent.h> |
16 | #include <unistd.h> | |
17 | #include <sys/types.h> | |
18 | #include <sys/stat.h> | |
6c66fa0f | 19 | #include <stdbool.h> |
1501a7f3 JG |
20 | |
21 | #include <common/defaults.h> | |
22 | #include <common/error.h> | |
23 | #include <common/macros.h> | |
24 | #include <common/utils.h> | |
cce35f91 | 25 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 26 | #include <common/compat/getenv.h> |
fb198a11 JG |
27 | #include <lttng/lttng-error.h> |
28 | #include <libxml/parser.h> | |
29 | #include <libxml/valid.h> | |
30 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
31 | #include <libxml/tree.h> |
32 | #include <lttng/lttng.h> | |
33 | #include <lttng/snapshot.h> | |
259c2674 | 34 | #include <lttng/rotation.h> |
c1e83fb4 | 35 | #include <lttng/userspace-probe.h> |
1501a7f3 | 36 | |
f40ef1d5 | 37 | #include "session-config.h" |
36f2332b | 38 | #include "config-internal.h" |
1501a7f3 | 39 | |
c1e83fb4 FD |
40 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
41 | ||
1501a7f3 JG |
42 | struct handler_filter_args { |
43 | const char* section; | |
44 | config_entry_handler_cb handler; | |
45 | void *user_data; | |
46 | }; | |
47 | ||
dcf266c0 JG |
48 | struct session_config_validation_ctx { |
49 | xmlSchemaParserCtxtPtr parser_ctx; | |
50 | xmlSchemaPtr schema; | |
51 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
52 | }; | |
53 | ||
72c2e2e1 | 54 | LTTNG_HIDDEN const char * const config_element_all = "all"; |
1501a7f3 JG |
55 | const char * const config_str_yes = "yes"; |
56 | const char * const config_str_true = "true"; | |
57 | const char * const config_str_on = "on"; | |
58 | const char * const config_str_no = "no"; | |
59 | const char * const config_str_false = "false"; | |
60 | const char * const config_str_off = "off"; | |
36f2332b | 61 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 62 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
63 | const char * const config_xml_indent_string = "\t"; |
64 | const char * const config_xml_true = "true"; | |
65 | const char * const config_xml_false = "false"; | |
1501a7f3 | 66 | |
fb198a11 JG |
67 | const char * const config_element_channel = "channel"; |
68 | const char * const config_element_channels = "channels"; | |
69 | const char * const config_element_domain = "domain"; | |
70 | const char * const config_element_domains = "domains"; | |
71 | const char * const config_element_event = "event"; | |
72 | const char * const config_element_events = "events"; | |
73 | const char * const config_element_context = "context"; | |
74 | const char * const config_element_contexts = "contexts"; | |
75 | const char * const config_element_attributes = "attributes"; | |
76 | const char * const config_element_exclusion = "exclusion"; | |
77 | const char * const config_element_exclusions = "exclusions"; | |
78 | const char * const config_element_function_attributes = "function_attributes"; | |
79 | const char * const config_element_probe_attributes = "probe_attributes"; | |
80 | const char * const config_element_symbol_name = "symbol_name"; | |
81 | const char * const config_element_address = "address"; | |
82 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 83 | |
d0687332 JG |
84 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method"; |
85 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
86 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
87 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
88 | LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
89 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
90 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
91 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
92 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
93 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 94 | |
fb198a11 JG |
95 | const char * const config_element_name = "name"; |
96 | const char * const config_element_enabled = "enabled"; | |
97 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
98 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
99 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
100 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
101 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
102 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
103 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
104 | const char * const config_element_output = "output"; |
105 | const char * const config_element_output_type = "output_type"; | |
106 | const char * const config_element_tracefile_size = "tracefile_size"; | |
107 | const char * const config_element_tracefile_count = "tracefile_count"; | |
108 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
109 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
110 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
111 | const char * const config_element_type = "type"; |
112 | const char * const config_element_buffer_type = "buffer_type"; | |
113 | const char * const config_element_session = "session"; | |
114 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
115 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
116 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
117 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
118 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
119 | const char * const config_element_config = "config"; |
120 | const char * const config_element_started = "started"; | |
121 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
122 | const char * const config_element_loglevel = "loglevel"; | |
123 | const char * const config_element_loglevel_type = "loglevel_type"; | |
124 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 125 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
126 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
127 | const char * const config_element_consumer_output = "consumer_output"; | |
128 | const char * const config_element_destination = "destination"; | |
129 | const char * const config_element_path = "path"; | |
130 | const char * const config_element_net_output = "net_output"; | |
131 | const char * const config_element_control_uri = "control_uri"; | |
132 | const char * const config_element_data_uri = "data_uri"; | |
133 | const char * const config_element_max_size = "max_size"; | |
ccf10263 | 134 | const char * const config_element_pid = "pid"; |
72c2e2e1 | 135 | LTTNG_HIDDEN const char * const config_element_id = "id"; |
ccf10263 | 136 | const char * const config_element_pids = "pids"; |
9e7c9f56 | 137 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
ebbf5ab7 | 138 | const char * const config_element_pid_tracker = "pid_tracker"; |
72c2e2e1 JG |
139 | LTTNG_HIDDEN const char * const config_element_vpid_tracker = "vpid_tracker"; |
140 | LTTNG_HIDDEN const char * const config_element_uid_tracker = "uid_tracker"; | |
141 | LTTNG_HIDDEN const char * const config_element_vuid_tracker = "vuid_tracker"; | |
142 | LTTNG_HIDDEN const char * const config_element_gid_tracker = "gid_tracker"; | |
143 | LTTNG_HIDDEN const char * const config_element_vgid_tracker = "vgid_tracker"; | |
ebbf5ab7 | 144 | const char * const config_element_trackers = "trackers"; |
847a5916 | 145 | const char * const config_element_targets = "targets"; |
72c2e2e1 | 146 | LTTNG_HIDDEN const char * const config_element_target_type = "target_type"; |
847a5916 | 147 | const char * const config_element_target_pid = "pid_target"; |
72c2e2e1 JG |
148 | LTTNG_HIDDEN const char * const config_element_target_vpid = "vpid_target"; |
149 | LTTNG_HIDDEN const char * const config_element_target_uid = "uid_target"; | |
150 | LTTNG_HIDDEN const char * const config_element_target_vuid = "vuid_target"; | |
151 | LTTNG_HIDDEN const char * const config_element_target_gid = "gid_target"; | |
152 | LTTNG_HIDDEN const char * const config_element_target_vgid = "vgid_target"; | |
153 | LTTNG_HIDDEN const char * const config_element_tracker_type = "tracker_type"; | |
fb198a11 | 154 | |
ce6176f2 JG |
155 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
156 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
157 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
158 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
159 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 160 | |
fb198a11 JG |
161 | const char * const config_domain_type_kernel = "KERNEL"; |
162 | const char * const config_domain_type_ust = "UST"; | |
163 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 164 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 165 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
166 | |
167 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
168 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
169 | const char * const config_buffer_type_global = "GLOBAL"; | |
170 | ||
171 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
172 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
173 | ||
174 | const char * const config_output_type_splice = "SPLICE"; | |
175 | const char * const config_output_type_mmap = "MMAP"; | |
176 | ||
177 | const char * const config_loglevel_type_all = "ALL"; | |
178 | const char * const config_loglevel_type_range = "RANGE"; | |
179 | const char * const config_loglevel_type_single = "SINGLE"; | |
180 | ||
181 | const char * const config_event_type_all = "ALL"; | |
182 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
183 | const char * const config_event_type_probe = "PROBE"; | |
a416382b | 184 | LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
185 | const char * const config_event_type_function = "FUNCTION"; |
186 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
187 | const char * const config_event_type_noop = "NOOP"; | |
188 | const char * const config_event_type_syscall = "SYSCALL"; | |
189 | const char * const config_event_type_kprobe = "KPROBE"; | |
190 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
191 | ||
192 | const char * const config_event_context_pid = "PID"; | |
193 | const char * const config_event_context_procname = "PROCNAME"; | |
194 | const char * const config_event_context_prio = "PRIO"; | |
195 | const char * const config_event_context_nice = "NICE"; | |
196 | const char * const config_event_context_vpid = "VPID"; | |
197 | const char * const config_event_context_tid = "TID"; | |
198 | const char * const config_event_context_vtid = "VTID"; | |
199 | const char * const config_event_context_ppid = "PPID"; | |
200 | const char * const config_event_context_vppid = "VPPID"; | |
201 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
202 | const char * const config_event_context_hostname = "HOSTNAME"; | |
203 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 204 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
205 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
206 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
207 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
208 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
209 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
210 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
211 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
40e14884 MJ |
212 | LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS"; |
213 | LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS"; | |
214 | LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS"; | |
215 | LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS"; | |
216 | LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS"; | |
217 | LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS"; | |
218 | LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS"; | |
499cbfa1 MJ |
219 | LTTNG_HIDDEN const char * const config_event_context_uid = "UID"; |
220 | LTTNG_HIDDEN const char * const config_event_context_euid = "EUID"; | |
221 | LTTNG_HIDDEN const char * const config_event_context_suid = "SUID"; | |
222 | LTTNG_HIDDEN const char * const config_event_context_gid = "GID"; | |
223 | LTTNG_HIDDEN const char * const config_event_context_egid = "EGID"; | |
224 | LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID"; | |
225 | LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID"; | |
226 | LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID"; | |
227 | LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID"; | |
228 | LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID"; | |
229 | LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID"; | |
230 | LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 231 | |
fbd987c9 JG |
232 | /* Deprecated symbols */ |
233 | const char * const config_element_perf; | |
234 | ||
d7b645e2 JR |
235 | enum process_event_node_phase { |
236 | CREATION = 0, | |
237 | ENABLE = 1, | |
238 | }; | |
239 | ||
dcf266c0 JG |
240 | struct consumer_output { |
241 | int enabled; | |
242 | char *path; | |
243 | char *control_uri; | |
244 | char *data_uri; | |
245 | }; | |
246 | ||
1501a7f3 JG |
247 | static int config_entry_handler_filter(struct handler_filter_args *args, |
248 | const char *section, const char *name, const char *value) | |
249 | { | |
250 | int ret = 0; | |
251 | struct config_entry entry = { section, name, value }; | |
252 | ||
253 | assert(args); | |
254 | ||
255 | if (!section || !name || !value) { | |
256 | ret = -EIO; | |
257 | goto end; | |
258 | } | |
259 | ||
260 | if (args->section) { | |
261 | if (strcmp(args->section, section)) { | |
262 | goto end; | |
263 | } | |
264 | } | |
265 | ||
266 | ret = args->handler(&entry, args->user_data); | |
267 | end: | |
268 | return ret; | |
269 | } | |
270 | ||
271 | LTTNG_HIDDEN | |
272 | int config_get_section_entries(const char *override_path, const char *section, | |
273 | config_entry_handler_cb handler, void *user_data) | |
274 | { | |
275 | int ret = 0; | |
4f00620d | 276 | const char *path; |
1501a7f3 JG |
277 | FILE *config_file = NULL; |
278 | struct handler_filter_args filter = { section, handler, user_data }; | |
279 | ||
7ab02a27 DG |
280 | /* First, try system-wide conf. file. */ |
281 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
282 | ||
283 | config_file = fopen(path, "r"); | |
284 | if (config_file) { | |
285 | DBG("Loading daemon conf file at %s", path); | |
286 | /* | |
287 | * Return value is not very important here since error or not, we | |
288 | * continue and try the next possible conf. file. | |
289 | */ | |
290 | (void) ini_parse_file(config_file, | |
291 | (ini_entry_handler) config_entry_handler_filter, | |
292 | (void *) &filter); | |
293 | fclose(config_file); | |
294 | } | |
295 | ||
296 | /* Second is the user local configuration. */ | |
297 | path = utils_get_home_dir(); | |
298 | if (path) { | |
299 | char fullpath[PATH_MAX]; | |
300 | ||
301 | ret = snprintf(fullpath, sizeof(fullpath), | |
302 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
303 | if (ret < 0) { | |
304 | PERROR("snprintf user conf. path"); | |
305 | goto error; | |
306 | } | |
307 | ||
308 | config_file = fopen(fullpath, "r"); | |
309 | if (config_file) { | |
310 | DBG("Loading daemon user conf file at %s", path); | |
311 | /* | |
312 | * Return value is not very important here since error or not, we | |
313 | * continue and try the next possible conf. file. | |
314 | */ | |
315 | (void) ini_parse_file(config_file, | |
316 | (ini_entry_handler) config_entry_handler_filter, | |
317 | (void *) &filter); | |
318 | fclose(config_file); | |
319 | } | |
320 | } | |
321 | ||
322 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
323 | if (override_path) { |
324 | config_file = fopen(override_path, "r"); | |
325 | if (config_file) { | |
7ab02a27 DG |
326 | DBG("Loading daemon command line conf file at %s", override_path); |
327 | (void) ini_parse_file(config_file, | |
328 | (ini_entry_handler) config_entry_handler_filter, | |
329 | (void *) &filter); | |
330 | fclose(config_file); | |
1501a7f3 JG |
331 | } else { |
332 | ERR("Failed to open daemon configuration file at %s", | |
333 | override_path); | |
334 | ret = -ENOENT; | |
7ab02a27 | 335 | goto error; |
1501a7f3 JG |
336 | } |
337 | } | |
338 | ||
7ab02a27 DG |
339 | /* Everything went well. */ |
340 | ret = 0; | |
1501a7f3 | 341 | |
7ab02a27 | 342 | error: |
1501a7f3 JG |
343 | return ret; |
344 | } | |
345 | ||
346 | LTTNG_HIDDEN | |
347 | int config_parse_value(const char *value) | |
348 | { | |
349 | int i, ret = 0; | |
350 | char *endptr, *lower_str; | |
351 | size_t len; | |
352 | unsigned long v; | |
353 | ||
354 | len = strlen(value); | |
355 | if (!len) { | |
356 | ret = -1; | |
357 | goto end; | |
358 | } | |
359 | ||
360 | v = strtoul(value, &endptr, 10); | |
361 | if (endptr != value) { | |
362 | ret = v; | |
363 | goto end; | |
364 | } | |
365 | ||
366 | lower_str = zmalloc(len + 1); | |
367 | if (!lower_str) { | |
368 | PERROR("zmalloc"); | |
369 | ret = -errno; | |
370 | goto end; | |
371 | } | |
372 | ||
373 | for (i = 0; i < len; i++) { | |
374 | lower_str[i] = tolower(value[i]); | |
375 | } | |
376 | ||
377 | if (!strcmp(lower_str, config_str_yes) || | |
378 | !strcmp(lower_str, config_str_true) || | |
379 | !strcmp(lower_str, config_str_on)) { | |
380 | ret = 1; | |
381 | } else if (!strcmp(lower_str, config_str_no) || | |
382 | !strcmp(lower_str, config_str_false) || | |
383 | !strcmp(lower_str, config_str_off)) { | |
384 | ret = 0; | |
385 | } else { | |
386 | ret = -1; | |
387 | } | |
388 | ||
389 | free(lower_str); | |
390 | end: | |
391 | return ret; | |
392 | } | |
36f2332b JG |
393 | |
394 | /* | |
395 | * Returns a xmlChar string which must be released using xmlFree(). | |
396 | */ | |
397 | static xmlChar *encode_string(const char *in_str) | |
398 | { | |
399 | xmlChar *out_str = NULL; | |
400 | xmlCharEncodingHandlerPtr handler; | |
401 | int out_len, ret, in_len; | |
402 | ||
403 | assert(in_str); | |
404 | ||
405 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
406 | if (!handler) { | |
407 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
408 | goto end; | |
409 | } | |
410 | ||
411 | in_len = strlen(in_str); | |
412 | /* | |
f76d886f JG |
413 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
414 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 415 | */ |
f76d886f | 416 | out_len = (in_len * 4) + 1; |
36f2332b JG |
417 | out_str = xmlMalloc(out_len); |
418 | if (!out_str) { | |
419 | goto end; | |
420 | } | |
421 | ||
422 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
423 | if (ret < 0) { | |
424 | xmlFree(out_str); | |
425 | out_str = NULL; | |
426 | goto end; | |
427 | } | |
428 | ||
429 | /* out_len is now the size of out_str */ | |
430 | out_str[out_len] = '\0'; | |
431 | end: | |
432 | return out_str; | |
433 | } | |
434 | ||
435 | LTTNG_HIDDEN | |
705bb62f | 436 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
437 | { |
438 | int ret; | |
439 | struct config_writer *writer; | |
440 | xmlOutputBufferPtr buffer; | |
441 | ||
442 | writer = zmalloc(sizeof(struct config_writer)); | |
443 | if (!writer) { | |
444 | PERROR("zmalloc config_writer_create"); | |
445 | goto end; | |
446 | } | |
447 | ||
448 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
449 | if (!buffer) { | |
450 | goto error_destroy; | |
451 | } | |
452 | ||
453 | writer->writer = xmlNewTextWriter(buffer); | |
454 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
455 | config_xml_encoding, NULL); | |
456 | if (ret < 0) { | |
457 | goto error_destroy; | |
458 | } | |
459 | ||
460 | ret = xmlTextWriterSetIndentString(writer->writer, | |
461 | BAD_CAST config_xml_indent_string); | |
705bb62f | 462 | if (ret) { |
36f2332b JG |
463 | goto error_destroy; |
464 | } | |
465 | ||
705bb62f JRJ |
466 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
467 | if (ret) { | |
36f2332b JG |
468 | goto error_destroy; |
469 | } | |
470 | ||
471 | end: | |
472 | return writer; | |
473 | error_destroy: | |
474 | config_writer_destroy(writer); | |
475 | return NULL; | |
476 | } | |
477 | ||
478 | LTTNG_HIDDEN | |
479 | int config_writer_destroy(struct config_writer *writer) | |
480 | { | |
481 | int ret = 0; | |
482 | ||
483 | if (!writer) { | |
484 | ret = -EINVAL; | |
485 | goto end; | |
486 | } | |
487 | ||
488 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
489 | WARN("Could not close XML document"); | |
490 | ret = -EIO; | |
491 | } | |
492 | ||
493 | if (writer->writer) { | |
494 | xmlFreeTextWriter(writer->writer); | |
495 | } | |
496 | ||
497 | free(writer); | |
498 | end: | |
499 | return ret; | |
500 | } | |
501 | ||
502 | LTTNG_HIDDEN | |
503 | int config_writer_open_element(struct config_writer *writer, | |
504 | const char *element_name) | |
505 | { | |
506 | int ret; | |
507 | xmlChar *encoded_element_name; | |
508 | ||
509 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
510 | ret = -1; | |
511 | goto end; | |
512 | } | |
513 | ||
514 | encoded_element_name = encode_string(element_name); | |
515 | if (!encoded_element_name) { | |
516 | ret = -1; | |
517 | goto end; | |
518 | } | |
519 | ||
520 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
521 | xmlFree(encoded_element_name); | |
522 | end: | |
28676a1d | 523 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
524 | } |
525 | ||
e10b6a1c JG |
526 | LTTNG_HIDDEN |
527 | int config_writer_write_attribute(struct config_writer *writer, | |
528 | const char *name, const char *value) | |
529 | { | |
530 | int ret; | |
531 | xmlChar *encoded_name = NULL; | |
532 | xmlChar *encoded_value = NULL; | |
533 | ||
534 | if (!writer || !writer->writer || !name || !name[0]) { | |
535 | ret = -1; | |
536 | goto end; | |
537 | } | |
538 | ||
539 | encoded_name = encode_string(name); | |
540 | if (!encoded_name) { | |
541 | ret = -1; | |
542 | goto end; | |
543 | } | |
544 | ||
545 | encoded_value = encode_string(value); | |
546 | if (!encoded_value) { | |
547 | ret = -1; | |
548 | goto end; | |
549 | } | |
550 | ||
551 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
552 | encoded_value); | |
553 | end: | |
554 | xmlFree(encoded_name); | |
555 | xmlFree(encoded_value); | |
556 | return ret >= 0 ? 0 : ret; | |
557 | } | |
558 | ||
36f2332b JG |
559 | LTTNG_HIDDEN |
560 | int config_writer_close_element(struct config_writer *writer) | |
561 | { | |
562 | int ret; | |
563 | ||
564 | if (!writer || !writer->writer) { | |
565 | ret = -1; | |
566 | goto end; | |
567 | } | |
568 | ||
569 | ret = xmlTextWriterEndElement(writer->writer); | |
570 | end: | |
28676a1d | 571 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
572 | } |
573 | ||
574 | LTTNG_HIDDEN | |
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 | ||
599 | LTTNG_HIDDEN | |
600 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
601 | const char *element_name, int64_t value) | |
602 | { | |
603 | int ret; | |
604 | xmlChar *encoded_element_name; | |
605 | ||
606 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
607 | ret = -1; | |
608 | goto end; | |
609 | } | |
610 | ||
611 | encoded_element_name = encode_string(element_name); | |
612 | if (!encoded_element_name) { | |
613 | ret = -1; | |
614 | goto end; | |
615 | } | |
616 | ||
617 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
618 | encoded_element_name, "%" PRIi64, value); | |
619 | xmlFree(encoded_element_name); | |
620 | end: | |
28676a1d | 621 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
622 | } |
623 | ||
624 | LTTNG_HIDDEN | |
625 | int config_writer_write_element_bool(struct config_writer *writer, | |
626 | const char *element_name, int value) | |
627 | { | |
628 | return config_writer_write_element_string(writer, element_name, | |
629 | value ? config_xml_true : config_xml_false); | |
630 | } | |
631 | ||
632 | LTTNG_HIDDEN | |
633 | int config_writer_write_element_string(struct config_writer *writer, | |
634 | const char *element_name, const char *value) | |
635 | { | |
636 | int ret; | |
637 | xmlChar *encoded_element_name = NULL; | |
638 | xmlChar *encoded_value = NULL; | |
639 | ||
640 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
641 | !value) { | |
642 | ret = -1; | |
643 | goto end; | |
644 | } | |
645 | ||
646 | encoded_element_name = encode_string(element_name); | |
647 | if (!encoded_element_name) { | |
648 | ret = -1; | |
649 | goto end; | |
650 | } | |
651 | ||
652 | encoded_value = encode_string(value); | |
653 | if (!encoded_value) { | |
654 | ret = -1; | |
655 | goto end; | |
656 | } | |
657 | ||
658 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 659 | encoded_value); |
36f2332b JG |
660 | end: |
661 | xmlFree(encoded_element_name); | |
662 | xmlFree(encoded_value); | |
28676a1d | 663 | return ret >= 0 ? 0 : ret; |
36f2332b | 664 | } |
dcf266c0 JG |
665 | |
666 | static | |
667 | void xml_error_handler(void *ctx, const char *format, ...) | |
668 | { | |
669 | char *errMsg; | |
670 | va_list args; | |
671 | int ret; | |
672 | ||
673 | va_start(args, format); | |
674 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 675 | va_end(args); |
dcf266c0 JG |
676 | if (ret == -1) { |
677 | ERR("String allocation failed in xml error handler"); | |
678 | return; | |
679 | } | |
dcf266c0 JG |
680 | |
681 | fprintf(stderr, "XML Error: %s", errMsg); | |
682 | free(errMsg); | |
683 | } | |
684 | ||
685 | static | |
686 | void fini_session_config_validation_ctx( | |
687 | struct session_config_validation_ctx *ctx) | |
688 | { | |
689 | if (ctx->parser_ctx) { | |
690 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
691 | } | |
692 | ||
693 | if (ctx->schema) { | |
694 | xmlSchemaFree(ctx->schema); | |
695 | } | |
696 | ||
697 | if (ctx->schema_validation_ctx) { | |
698 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
699 | } | |
700 | ||
701 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
702 | } | |
703 | ||
54e399cb JG |
704 | static |
705 | char *get_session_config_xsd_path() | |
706 | { | |
707 | char *xsd_path; | |
e8fa9fb0 | 708 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
709 | size_t base_path_len; |
710 | size_t max_path_len; | |
711 | ||
712 | if (!base_path) { | |
713 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
714 | } | |
715 | ||
716 | base_path_len = strlen(base_path); | |
717 | max_path_len = base_path_len + | |
718 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
719 | xsd_path = zmalloc(max_path_len); | |
720 | if (!xsd_path) { | |
721 | goto end; | |
722 | } | |
723 | ||
00a7f6f8 | 724 | strcpy(xsd_path, base_path); |
54e399cb JG |
725 | if (xsd_path[base_path_len - 1] != '/') { |
726 | xsd_path[base_path_len++] = '/'; | |
727 | } | |
728 | ||
00a7f6f8 | 729 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
730 | end: |
731 | return xsd_path; | |
732 | } | |
733 | ||
dcf266c0 JG |
734 | static |
735 | int init_session_config_validation_ctx( | |
736 | struct session_config_validation_ctx *ctx) | |
737 | { | |
738 | int ret; | |
54e399cb JG |
739 | char *xsd_path = get_session_config_xsd_path(); |
740 | ||
741 | if (!xsd_path) { | |
742 | ret = -LTTNG_ERR_NOMEM; | |
743 | goto end; | |
744 | } | |
dcf266c0 | 745 | |
54e399cb | 746 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
747 | if (!ctx->parser_ctx) { |
748 | ERR("XSD parser context creation failed"); | |
749 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
750 | goto end; | |
751 | } | |
752 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
753 | xml_error_handler, NULL); | |
754 | ||
755 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
756 | if (!ctx->schema) { | |
757 | ERR("XSD parsing failed"); | |
758 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
759 | goto end; | |
760 | } | |
761 | ||
762 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
763 | if (!ctx->schema_validation_ctx) { | |
764 | ERR("XSD validation context creation failed"); | |
765 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
766 | goto end; | |
767 | } | |
768 | ||
769 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
770 | xml_error_handler, NULL); | |
771 | ret = 0; | |
772 | ||
773 | end: | |
774 | if (ret) { | |
775 | fini_session_config_validation_ctx(ctx); | |
776 | } | |
777 | ||
54e399cb | 778 | free(xsd_path); |
dcf266c0 JG |
779 | return ret; |
780 | } | |
781 | ||
782 | static | |
783 | int parse_uint(xmlChar *str, uint64_t *val) | |
784 | { | |
785 | int ret; | |
786 | char *endptr; | |
787 | ||
788 | if (!str || !val) { | |
789 | ret = -1; | |
790 | goto end; | |
791 | } | |
792 | ||
793 | *val = strtoull((const char *) str, &endptr, 10); | |
794 | if (!endptr || *endptr) { | |
795 | ret = -1; | |
796 | } else { | |
797 | ret = 0; | |
798 | } | |
799 | ||
800 | end: | |
801 | return ret; | |
802 | } | |
803 | ||
804 | static | |
805 | int parse_int(xmlChar *str, int64_t *val) | |
806 | { | |
807 | int ret; | |
808 | char *endptr; | |
809 | ||
810 | if (!str || !val) { | |
811 | ret = -1; | |
812 | goto end; | |
813 | } | |
814 | ||
815 | *val = strtoll((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_bool(xmlChar *str, int *val) | |
828 | { | |
829 | int ret = 0; | |
830 | ||
831 | if (!str || !val) { | |
832 | ret = -1; | |
833 | goto end; | |
834 | } | |
835 | ||
836 | if (!strcmp((const char *) str, config_xml_true)) { | |
837 | *val = 1; | |
838 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
839 | *val = 0; | |
840 | } else { | |
841 | WARN("Invalid boolean value encoutered (%s).", | |
842 | (const char *) str); | |
843 | ret = -1; | |
844 | } | |
845 | end: | |
846 | return ret; | |
847 | } | |
848 | ||
849 | static | |
850 | int get_domain_type(xmlChar *domain) | |
851 | { | |
852 | int ret; | |
853 | ||
854 | if (!domain) { | |
855 | goto error; | |
856 | } | |
857 | ||
858 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
859 | ret = LTTNG_DOMAIN_KERNEL; | |
860 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
861 | ret = LTTNG_DOMAIN_UST; | |
862 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
863 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
864 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
865 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
866 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
867 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
868 | } else { |
869 | goto error; | |
870 | } | |
871 | ||
872 | return ret; | |
873 | error: | |
874 | return -1; | |
875 | } | |
876 | ||
877 | static | |
878 | int get_buffer_type(xmlChar *buffer_type) | |
879 | { | |
880 | int ret; | |
881 | ||
882 | if (!buffer_type) { | |
883 | goto error; | |
884 | } | |
885 | ||
886 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
887 | ret = LTTNG_BUFFER_GLOBAL; | |
888 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
889 | ret = LTTNG_BUFFER_PER_UID; | |
890 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
891 | ret = LTTNG_BUFFER_PER_PID; | |
892 | } else { | |
893 | goto error; | |
894 | } | |
895 | ||
896 | return ret; | |
897 | error: | |
898 | return -1; | |
899 | } | |
900 | ||
901 | static | |
902 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
903 | { | |
904 | int ret; | |
905 | ||
906 | if (!overwrite_mode) { | |
907 | goto error; | |
908 | } | |
909 | ||
910 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
911 | ret = 1; | |
912 | } else if (!strcmp((char *) overwrite_mode, | |
913 | config_overwrite_mode_discard)) { | |
914 | ret = 0; | |
915 | } else { | |
916 | goto error; | |
917 | } | |
918 | ||
919 | return ret; | |
920 | error: | |
921 | return -1; | |
922 | } | |
923 | ||
924 | static | |
925 | int get_output_type(xmlChar *output_type) | |
926 | { | |
927 | int ret; | |
928 | ||
929 | if (!output_type) { | |
930 | goto error; | |
931 | } | |
932 | ||
933 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
934 | ret = LTTNG_EVENT_MMAP; | |
935 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
936 | ret = LTTNG_EVENT_SPLICE; | |
937 | } else { | |
938 | goto error; | |
939 | } | |
940 | ||
941 | return ret; | |
942 | error: | |
943 | return -1; | |
944 | } | |
945 | ||
946 | static | |
947 | int get_event_type(xmlChar *event_type) | |
948 | { | |
949 | int ret; | |
950 | ||
951 | if (!event_type) { | |
952 | goto error; | |
953 | } | |
954 | ||
955 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
956 | ret = LTTNG_EVENT_ALL; | |
957 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
958 | ret = LTTNG_EVENT_TRACEPOINT; | |
959 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
960 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
961 | } else if (!strcmp((char *) event_type, |
962 | config_event_type_userspace_probe)) { | |
963 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
964 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
965 | ret = LTTNG_EVENT_FUNCTION; | |
966 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 967 | config_event_type_function_entry)) { |
dcf266c0 JG |
968 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
969 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
970 | ret = LTTNG_EVENT_NOOP; | |
971 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
972 | ret = LTTNG_EVENT_SYSCALL; | |
973 | } else { | |
974 | goto error; | |
975 | } | |
976 | ||
977 | return ret; | |
978 | error: | |
979 | return -1; | |
980 | } | |
981 | ||
982 | static | |
983 | int get_loglevel_type(xmlChar *loglevel_type) | |
984 | { | |
985 | int ret; | |
986 | ||
987 | if (!loglevel_type) { | |
988 | goto error; | |
989 | } | |
990 | ||
991 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
992 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
993 | } else if (!strcmp((char *) loglevel_type, | |
994 | config_loglevel_type_range)) { | |
995 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
996 | } else if (!strcmp((char *) loglevel_type, | |
997 | config_loglevel_type_single)) { | |
998 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
999 | } else { | |
1000 | goto error; | |
1001 | } | |
1002 | ||
1003 | return ret; | |
1004 | error: | |
1005 | return -1; | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * Return the context type or -1 on error. | |
1010 | */ | |
1011 | static | |
1012 | int get_context_type(xmlChar *context_type) | |
1013 | { | |
1014 | int ret; | |
1015 | ||
1016 | if (!context_type) { | |
1017 | goto error; | |
1018 | } | |
1019 | ||
1020 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1021 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1022 | } else if (!strcmp((char *) context_type, | |
1023 | config_event_context_procname)) { | |
1024 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1025 | } else if (!strcmp((char *) context_type, | |
1026 | config_event_context_prio)) { | |
1027 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1028 | } else if (!strcmp((char *) context_type, | |
1029 | config_event_context_nice)) { | |
1030 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1031 | } else if (!strcmp((char *) context_type, | |
1032 | config_event_context_vpid)) { | |
1033 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1034 | } else if (!strcmp((char *) context_type, | |
1035 | config_event_context_tid)) { | |
1036 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1037 | } else if (!strcmp((char *) context_type, | |
1038 | config_event_context_vtid)) { | |
1039 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1040 | } else if (!strcmp((char *) context_type, | |
1041 | config_event_context_ppid)) { | |
1042 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1043 | } else if (!strcmp((char *) context_type, | |
1044 | config_event_context_vppid)) { | |
1045 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1046 | } else if (!strcmp((char *) context_type, | |
1047 | config_event_context_pthread_id)) { | |
1048 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1049 | } else if (!strcmp((char *) context_type, | |
1050 | config_event_context_hostname)) { | |
1051 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1052 | } else if (!strcmp((char *) context_type, | |
1053 | config_event_context_ip)) { | |
1054 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1055 | } else if (!strcmp((char *) context_type, |
1056 | config_event_context_interruptible)) { | |
1057 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1058 | } else if (!strcmp((char *) context_type, | |
1059 | config_event_context_preemptible)) { | |
1060 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1061 | } else if (!strcmp((char *) context_type, | |
1062 | config_event_context_need_reschedule)) { | |
1063 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1064 | } else if (!strcmp((char *) context_type, | |
1065 | config_event_context_migratable)) { | |
1066 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1067 | } else if (!strcmp((char *) context_type, |
1068 | config_event_context_callstack_user)) { | |
1069 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1070 | } else if (!strcmp((char *) context_type, | |
1071 | config_event_context_callstack_kernel)) { | |
1072 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1073 | } else if (!strcmp((char *) context_type, |
1074 | config_event_context_cgroup_ns)) { | |
1075 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1076 | } else if (!strcmp((char *) context_type, | |
1077 | config_event_context_ipc_ns)) { | |
1078 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1079 | } else if (!strcmp((char *) context_type, | |
1080 | config_event_context_mnt_ns)) { | |
1081 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1082 | } else if (!strcmp((char *) context_type, | |
1083 | config_event_context_net_ns)) { | |
1084 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1085 | } else if (!strcmp((char *) context_type, | |
1086 | config_event_context_pid_ns)) { | |
1087 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
1088 | } else if (!strcmp((char *) context_type, | |
1089 | config_event_context_user_ns)) { | |
1090 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1091 | } else if (!strcmp((char *) context_type, | |
1092 | config_event_context_uts_ns)) { | |
1093 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1094 | } else if (!strcmp((char *) context_type, |
1095 | config_event_context_uid)) { | |
1096 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1097 | } else if (!strcmp((char *) context_type, | |
1098 | config_event_context_euid)) { | |
1099 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1100 | } else if (!strcmp((char *) context_type, | |
1101 | config_event_context_suid)) { | |
1102 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1103 | } else if (!strcmp((char *) context_type, | |
1104 | config_event_context_gid)) { | |
1105 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1106 | } else if (!strcmp((char *) context_type, | |
1107 | config_event_context_egid)) { | |
1108 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1109 | } else if (!strcmp((char *) context_type, | |
1110 | config_event_context_sgid)) { | |
1111 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1112 | } else if (!strcmp((char *) context_type, | |
1113 | config_event_context_vuid)) { | |
1114 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1115 | } else if (!strcmp((char *) context_type, | |
1116 | config_event_context_veuid)) { | |
1117 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1118 | } else if (!strcmp((char *) context_type, | |
1119 | config_event_context_vsuid)) { | |
1120 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1121 | } else if (!strcmp((char *) context_type, | |
1122 | config_event_context_vgid)) { | |
1123 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1124 | } else if (!strcmp((char *) context_type, | |
1125 | config_event_context_vegid)) { | |
1126 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1127 | } else if (!strcmp((char *) context_type, | |
1128 | config_event_context_vsgid)) { | |
1129 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1130 | } else { |
1131 | goto error; | |
1132 | } | |
1133 | ||
1134 | return ret; | |
1135 | error: | |
1136 | return -1; | |
1137 | } | |
1138 | ||
1139 | static | |
1140 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1141 | { | |
1142 | int ret; | |
1143 | xmlNodePtr node; | |
1144 | ||
1145 | for (node = xmlFirstElementChild(domain_node); node; | |
1146 | node = xmlNextElementSibling(node)) { | |
1147 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1148 | /* domain type */ | |
1149 | xmlChar *node_content = xmlNodeGetContent(node); | |
1150 | if (!node_content) { | |
1151 | ret = -LTTNG_ERR_NOMEM; | |
1152 | goto end; | |
1153 | } | |
1154 | ||
1155 | ret = get_domain_type(node_content); | |
1156 | free(node_content); | |
1157 | if (ret < 0) { | |
1158 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1159 | goto end; | |
1160 | } | |
1161 | ||
1162 | domain->type = ret; | |
1163 | } else if (!strcmp((const char *) node->name, | |
1164 | config_element_buffer_type)) { | |
1165 | /* buffer type */ | |
1166 | xmlChar *node_content = xmlNodeGetContent(node); | |
1167 | if (!node_content) { | |
1168 | ret = -LTTNG_ERR_NOMEM; | |
1169 | goto end; | |
1170 | } | |
1171 | ||
1172 | ret = get_buffer_type(node_content); | |
1173 | free(node_content); | |
1174 | if (ret < 0) { | |
1175 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1176 | goto end; | |
1177 | } | |
1178 | ||
1179 | domain->buf_type = ret; | |
1180 | } | |
1181 | } | |
1182 | ret = 0; | |
1183 | end: | |
1184 | return ret; | |
1185 | } | |
1186 | ||
1187 | static | |
1188 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1189 | char **data_uri) | |
1190 | { | |
1191 | xmlNodePtr node; | |
1192 | ||
1193 | for (node = xmlFirstElementChild(net_output_node); node; | |
1194 | node = xmlNextElementSibling(node)) { | |
1195 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1196 | /* control_uri */ | |
1197 | *control_uri = (char *) xmlNodeGetContent(node); | |
1198 | if (!*control_uri) { | |
1199 | break; | |
1200 | } | |
1201 | } else { | |
1202 | /* data_uri */ | |
1203 | *data_uri = (char *) xmlNodeGetContent(node); | |
1204 | if (!*data_uri) { | |
1205 | break; | |
1206 | } | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1211 | } | |
1212 | ||
1213 | static | |
1214 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1215 | struct consumer_output *output) | |
1216 | { | |
1217 | int ret; | |
1218 | xmlNodePtr node; | |
1219 | ||
1220 | assert(output); | |
1221 | ||
1222 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1223 | node = xmlNextElementSibling(node)) { | |
1224 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1225 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1226 | ||
1227 | /* enabled */ | |
1228 | if (!enabled_str) { | |
1229 | ret = -LTTNG_ERR_NOMEM; | |
1230 | goto end; | |
1231 | } | |
1232 | ||
1233 | ret = parse_bool(enabled_str, &output->enabled); | |
1234 | free(enabled_str); | |
1235 | if (ret) { | |
1236 | goto end; | |
1237 | } | |
1238 | } else { | |
1239 | xmlNodePtr output_type_node; | |
1240 | ||
1241 | /* destination */ | |
1242 | output_type_node = xmlFirstElementChild(node); | |
1243 | if (!output_type_node) { | |
1244 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1245 | goto end; | |
1246 | } | |
1247 | ||
1248 | if (!strcmp((const char *) output_type_node->name, | |
1249 | config_element_path)) { | |
1250 | /* path */ | |
1251 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1252 | if (!output->path) { | |
1253 | ret = -LTTNG_ERR_NOMEM; | |
1254 | goto end; | |
1255 | } | |
1256 | } else { | |
1257 | /* net_output */ | |
1258 | ret = get_net_output_uris(output_type_node, | |
1259 | &output->control_uri, &output->data_uri); | |
1260 | if (ret) { | |
1261 | goto end; | |
1262 | } | |
1263 | } | |
1264 | } | |
1265 | } | |
1266 | ret = 0; | |
1267 | ||
1268 | end: | |
1269 | if (ret) { | |
1270 | free(output->path); | |
1271 | free(output->control_uri); | |
1272 | free(output->data_uri); | |
1273 | memset(output, 0, sizeof(struct consumer_output)); | |
1274 | } | |
1275 | return ret; | |
1276 | } | |
1277 | ||
1278 | static | |
95681498 JG |
1279 | int create_session_net_output(const char *name, const char *control_uri, |
1280 | const char *data_uri) | |
dcf266c0 JG |
1281 | { |
1282 | int ret; | |
1283 | struct lttng_handle *handle; | |
1284 | const char *uri = NULL; | |
1285 | ||
1286 | assert(name); | |
dcf266c0 | 1287 | |
95681498 | 1288 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1289 | if (!handle) { |
1290 | ret = -LTTNG_ERR_NOMEM; | |
1291 | goto end; | |
1292 | } | |
1293 | ||
1294 | if (!control_uri || !data_uri) { | |
1295 | uri = control_uri ? control_uri : data_uri; | |
1296 | control_uri = uri; | |
1297 | data_uri = uri; | |
1298 | } | |
1299 | ||
1300 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1301 | lttng_destroy_handle(handle); | |
1302 | end: | |
1303 | return ret; | |
1304 | } | |
1305 | ||
1306 | static | |
1b08cbce JR |
1307 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1308 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1309 | { |
1310 | int ret; | |
1311 | xmlNodePtr node = NULL; | |
1312 | xmlNodePtr snapshot_output_list_node; | |
1313 | xmlNodePtr snapshot_output_node; | |
1314 | ||
1315 | assert(session_name); | |
1316 | ||
1317 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1318 | if (ret) { | |
1319 | goto end; | |
1320 | } | |
1321 | ||
1322 | if (!output_node) { | |
1323 | goto end; | |
1324 | } | |
1325 | ||
1326 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1327 | ||
1328 | /* Parse and create snapshot outputs */ | |
1329 | ||
1330 | for (snapshot_output_node = | |
1331 | xmlFirstElementChild(snapshot_output_list_node); | |
1332 | snapshot_output_node; snapshot_output_node = | |
1333 | xmlNextElementSibling(snapshot_output_node)) { | |
1334 | char *name = NULL; | |
1335 | uint64_t max_size = UINT64_MAX; | |
1336 | struct consumer_output output = { 0 }; | |
1337 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1338 | const char *control_uri = NULL; |
1339 | const char *data_uri = NULL; | |
1340 | const char *path = NULL; | |
dcf266c0 JG |
1341 | |
1342 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1343 | node = xmlNextElementSibling(node)) { | |
1344 | if (!strcmp((const char *) node->name, | |
1345 | config_element_name)) { | |
1346 | /* name */ | |
1347 | name = (char *) xmlNodeGetContent(node); | |
1348 | if (!name) { | |
1349 | ret = -LTTNG_ERR_NOMEM; | |
1350 | goto error_snapshot_output; | |
1351 | } | |
1352 | } else if (!strcmp((const char *) node->name, | |
1353 | config_element_max_size)) { | |
1354 | xmlChar *content = xmlNodeGetContent(node); | |
1355 | ||
1356 | /* max_size */ | |
1357 | if (!content) { | |
1358 | ret = -LTTNG_ERR_NOMEM; | |
1359 | goto error_snapshot_output; | |
1360 | } | |
1361 | ret = parse_uint(content, &max_size); | |
1362 | free(content); | |
1363 | if (ret) { | |
1364 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1365 | goto error_snapshot_output; | |
1366 | } | |
1367 | } else { | |
1368 | /* consumer_output */ | |
1369 | ret = process_consumer_output(node, &output); | |
1370 | if (ret) { | |
1371 | goto error_snapshot_output; | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | ||
21a3f144 JR |
1376 | control_uri = output.control_uri; |
1377 | data_uri = output.data_uri; | |
1378 | path = output.path; | |
1379 | ||
1b08cbce JR |
1380 | if (overrides) { |
1381 | if (overrides->path_url) { | |
1b08cbce | 1382 | path = overrides->path_url; |
21a3f144 JR |
1383 | /* Control/data_uri are null */ |
1384 | control_uri = NULL; | |
1385 | data_uri = NULL; | |
1b08cbce JR |
1386 | } else { |
1387 | if (overrides->ctrl_url) { | |
1b08cbce | 1388 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1389 | /* path is null */ |
1390 | path = NULL; | |
1b08cbce JR |
1391 | } |
1392 | if (overrides->data_url) { | |
1b08cbce | 1393 | data_uri = overrides->data_url; |
21a3f144 JR |
1394 | /* path is null */ |
1395 | path = NULL; | |
1b08cbce JR |
1396 | } |
1397 | } | |
1b08cbce JR |
1398 | } |
1399 | ||
dcf266c0 JG |
1400 | snapshot_output = lttng_snapshot_output_create(); |
1401 | if (!snapshot_output) { | |
1402 | ret = -LTTNG_ERR_NOMEM; | |
1403 | goto error_snapshot_output; | |
1404 | } | |
1405 | ||
1406 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1407 | if (ret) { | |
1408 | goto error_snapshot_output; | |
1409 | } | |
1410 | ||
1411 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1412 | if (ret) { | |
1413 | goto error_snapshot_output; | |
1414 | } | |
1415 | ||
1b08cbce JR |
1416 | if (path) { |
1417 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1418 | snapshot_output); |
1419 | if (ret) { | |
1420 | goto error_snapshot_output; | |
1421 | } | |
1422 | } else { | |
1b08cbce JR |
1423 | if (control_uri) { |
1424 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1425 | snapshot_output); |
1426 | if (ret) { | |
1427 | goto error_snapshot_output; | |
1428 | } | |
1429 | } | |
1430 | ||
1b08cbce JR |
1431 | if (data_uri) { |
1432 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1433 | snapshot_output); |
1434 | if (ret) { | |
1435 | goto error_snapshot_output; | |
1436 | } | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1441 | error_snapshot_output: | |
1442 | free(name); | |
1443 | free(output.path); | |
1444 | free(output.control_uri); | |
1445 | free(output.data_uri); | |
1446 | lttng_snapshot_output_destroy(snapshot_output); | |
1447 | if (ret) { | |
1448 | goto end; | |
1449 | } | |
1450 | } | |
1451 | end: | |
1452 | return ret; | |
1453 | } | |
1454 | ||
1455 | static | |
1456 | int create_session(const char *name, | |
dcf266c0 | 1457 | xmlNodePtr output_node, |
1b08cbce JR |
1458 | uint64_t live_timer_interval, |
1459 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1460 | { |
1461 | int ret; | |
1462 | struct consumer_output output = { 0 }; | |
1463 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1464 | const char *control_uri = NULL; |
1465 | const char *data_uri = NULL; | |
1466 | const char *path = NULL; | |
dcf266c0 JG |
1467 | |
1468 | assert(name); | |
dcf266c0 JG |
1469 | |
1470 | if (output_node) { | |
1471 | consumer_output_node = xmlFirstElementChild(output_node); | |
1472 | if (!consumer_output_node) { | |
1473 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1474 | goto end; | |
1475 | } | |
1476 | ||
1477 | if (strcmp((const char *) consumer_output_node->name, | |
1478 | config_element_consumer_output)) { | |
1479 | WARN("Invalid output type, expected %s node", | |
1480 | config_element_consumer_output); | |
1481 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1482 | goto end; | |
1483 | } | |
1484 | ||
1485 | ret = process_consumer_output(consumer_output_node, &output); | |
1486 | if (ret) { | |
1487 | goto end; | |
1488 | } | |
1489 | } | |
1490 | ||
21a3f144 JR |
1491 | control_uri = output.control_uri; |
1492 | data_uri = output.data_uri; | |
1493 | path = output.path; | |
1494 | ||
1b08cbce JR |
1495 | /* Check for override and apply them */ |
1496 | if (overrides) { | |
1497 | if (overrides->path_url) { | |
1b08cbce | 1498 | path = overrides->path_url; |
21a3f144 JR |
1499 | /* control/data_uri are null */; |
1500 | control_uri = NULL; | |
1501 | data_uri = NULL; | |
1b08cbce JR |
1502 | } else { |
1503 | if (overrides->ctrl_url) { | |
1b08cbce | 1504 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1505 | /* path is null */ |
1506 | path = NULL; | |
1b08cbce JR |
1507 | } |
1508 | if (overrides->data_url) { | |
1b08cbce | 1509 | data_uri = overrides->data_url; |
21a3f144 JR |
1510 | /* path is null */ |
1511 | path = NULL; | |
1b08cbce JR |
1512 | } |
1513 | } | |
1b08cbce JR |
1514 | } |
1515 | ||
21a3f144 | 1516 | |
1b08cbce | 1517 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1518 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1519 | goto end; | |
1520 | } | |
1521 | ||
1b08cbce | 1522 | if (control_uri || data_uri) { |
dcf266c0 JG |
1523 | /* network destination */ |
1524 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1525 | /* |
1526 | * URLs are provided for sure since the test above make sure that | |
1527 | * with a live timer the data and control URIs are provided. So, | |
1528 | * NULL is passed here and will be set right after. | |
1529 | */ | |
1530 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1531 | } else { |
1532 | ret = lttng_create_session(name, NULL); | |
1533 | } | |
1534 | if (ret) { | |
1535 | goto end; | |
1536 | } | |
1537 | ||
1b08cbce | 1538 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1539 | if (ret) { |
1540 | goto end; | |
dcf266c0 | 1541 | } |
95681498 | 1542 | |
dcf266c0 JG |
1543 | } else { |
1544 | /* either local output or no output */ | |
1b08cbce | 1545 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1546 | if (ret) { |
1547 | goto end; | |
1548 | } | |
1549 | } | |
1550 | end: | |
1551 | free(output.path); | |
1552 | free(output.control_uri); | |
1553 | free(output.data_uri); | |
1554 | return ret; | |
1555 | } | |
c1e83fb4 FD |
1556 | |
1557 | static | |
1558 | struct lttng_userspace_probe_location * | |
1559 | process_userspace_probe_function_attribute_node( | |
1560 | xmlNodePtr attribute_node) | |
1561 | { | |
c1e83fb4 | 1562 | xmlNodePtr function_attribute_node; |
717d2dba | 1563 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1564 | struct lttng_userspace_probe_location *location = NULL; |
1565 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1566 | ||
1567 | /* | |
1568 | * Process userspace probe location function attributes. The order of | |
1569 | * the fields are not guaranteed so we need to iterate over all fields | |
1570 | * and check at the end if everything we need for this location type is | |
1571 | * there. | |
1572 | */ | |
1573 | for (function_attribute_node = | |
1574 | xmlFirstElementChild(attribute_node); | |
1575 | function_attribute_node; | |
1576 | function_attribute_node = xmlNextElementSibling( | |
1577 | function_attribute_node)) { | |
1578 | /* Handle function name, binary path and lookup method. */ | |
1579 | if (!strcmp((const char *) function_attribute_node->name, | |
1580 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1581 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1582 | if (!function_name) { |
c1e83fb4 FD |
1583 | goto error; |
1584 | } | |
1585 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1586 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1587 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1588 | if (!binary_path) { |
c1e83fb4 FD |
1589 | goto error; |
1590 | } | |
1591 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1592 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1593 | char *lookup_method_name; |
c1e83fb4 | 1594 | |
717d2dba JG |
1595 | lookup_method_name = (char *) xmlNodeGetContent( |
1596 | function_attribute_node); | |
c1e83fb4 | 1597 | if (!lookup_method_name) { |
c1e83fb4 FD |
1598 | goto error; |
1599 | } | |
1600 | ||
1601 | /* | |
1602 | * function_default lookup method defaults to | |
1603 | * function_elf lookup method at the moment. | |
1604 | */ | |
1605 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1606 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1607 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1608 | if (!lookup_method) { | |
1609 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1610 | } |
1611 | } else { | |
717d2dba JG |
1612 | WARN("Unknown function lookup method"); |
1613 | } | |
1614 | ||
1615 | free(lookup_method_name); | |
1616 | if (!lookup_method) { | |
c1e83fb4 FD |
1617 | goto error; |
1618 | } | |
1619 | } else { | |
1620 | goto error; | |
1621 | } | |
1622 | ||
1623 | /* Check if all the necessary fields were found. */ | |
1624 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1625 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1626 | location = |
1627 | lttng_userspace_probe_location_function_create( | |
1628 | binary_path, function_name, | |
1629 | lookup_method); | |
717d2dba JG |
1630 | lookup_method = NULL; |
1631 | goto error; | |
c1e83fb4 FD |
1632 | } |
1633 | } | |
1634 | error: | |
717d2dba | 1635 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1636 | free(binary_path); |
1637 | free(function_name); | |
c1e83fb4 FD |
1638 | return location; |
1639 | } | |
1640 | ||
1641 | static | |
1642 | struct lttng_userspace_probe_location * | |
1643 | process_userspace_probe_tracepoint_attribute_node( | |
1644 | xmlNodePtr attribute_node) | |
1645 | { | |
c1e83fb4 | 1646 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1647 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1648 | struct lttng_userspace_probe_location *location = NULL; | |
1649 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1650 | ||
1651 | /* | |
1652 | * Process userspace probe location tracepoint attributes. The order of | |
1653 | * the fields are not guaranteed so we need to iterate over all fields | |
1654 | * and check at the end if everything we need for this location type is | |
1655 | * there. | |
1656 | */ | |
1657 | for (tracepoint_attribute_node = | |
1658 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1659 | tracepoint_attribute_node = xmlNextElementSibling( | |
1660 | tracepoint_attribute_node)) { | |
1661 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1662 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1663 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1664 | if (!probe_name) { |
c1e83fb4 FD |
1665 | goto error; |
1666 | } | |
1667 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1668 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1669 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1670 | if (!provider_name) { |
c1e83fb4 FD |
1671 | goto error; |
1672 | } | |
1673 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1674 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1675 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1676 | if (!binary_path) { |
c1e83fb4 FD |
1677 | goto error; |
1678 | } | |
1679 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1680 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1681 | char *lookup_method_name; |
c1e83fb4 | 1682 | |
717d2dba JG |
1683 | lookup_method_name = (char *) xmlNodeGetContent( |
1684 | tracepoint_attribute_node); | |
c1e83fb4 | 1685 | if (!lookup_method_name) { |
c1e83fb4 FD |
1686 | goto error; |
1687 | } | |
1688 | ||
1689 | if (!strcmp(lookup_method_name, | |
1690 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1691 | lookup_method = | |
1692 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1693 | if (!lookup_method) { | |
1694 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1695 | } |
1696 | } else { | |
717d2dba JG |
1697 | WARN("Unknown tracepoint lookup method"); |
1698 | } | |
1699 | ||
1700 | free(lookup_method_name); | |
1701 | if (!lookup_method) { | |
c1e83fb4 FD |
1702 | goto error; |
1703 | } | |
1704 | } else { | |
717d2dba | 1705 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1706 | goto error; |
1707 | } | |
1708 | ||
1709 | /* Check if all the necessary fields were found. */ | |
1710 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1711 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1712 | location = |
1713 | lttng_userspace_probe_location_tracepoint_create( | |
1714 | binary_path, provider_name, | |
1715 | probe_name, lookup_method); | |
6bd61b96 | 1716 | lookup_method = NULL; |
717d2dba | 1717 | goto error; |
c1e83fb4 FD |
1718 | } |
1719 | } | |
1720 | error: | |
717d2dba | 1721 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1722 | free(binary_path); |
c1e83fb4 | 1723 | free(provider_name); |
717d2dba | 1724 | free(probe_name); |
c1e83fb4 FD |
1725 | return location; |
1726 | } | |
1727 | ||
dcf266c0 JG |
1728 | static |
1729 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1730 | struct lttng_event_probe_attr *attr) | |
1731 | { | |
1732 | int ret; | |
1733 | ||
1734 | assert(probe_attribute_node); | |
1735 | assert(attr); | |
1736 | ||
1737 | if (!strcmp((const char *) probe_attribute_node->name, | |
1738 | config_element_address)) { | |
1739 | xmlChar *content; | |
1740 | uint64_t addr = 0; | |
1741 | ||
1742 | /* addr */ | |
1743 | content = xmlNodeGetContent(probe_attribute_node); | |
1744 | if (!content) { | |
1745 | ret = -LTTNG_ERR_NOMEM; | |
1746 | goto end; | |
1747 | } | |
1748 | ||
1749 | ret = parse_uint(content, &addr); | |
1750 | free(content); | |
1751 | if (ret) { | |
1752 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1753 | goto end; | |
1754 | } | |
1755 | ||
1756 | attr->addr = addr; | |
1757 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1758 | config_element_offset)) { | |
1759 | xmlChar *content; | |
1760 | uint64_t offset = 0; | |
1761 | ||
1762 | /* offset */ | |
1763 | content = xmlNodeGetContent(probe_attribute_node); | |
1764 | if (!content) { | |
1765 | ret = -LTTNG_ERR_NOMEM; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | ret = parse_uint(content, &offset); | |
1770 | free(content); | |
1771 | if (ret) { | |
1772 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
1776 | attr->offset = offset; | |
1777 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1778 | config_element_symbol_name)) { | |
1779 | xmlChar *content; | |
dcf266c0 JG |
1780 | |
1781 | /* symbol_name */ | |
1782 | content = xmlNodeGetContent(probe_attribute_node); | |
1783 | if (!content) { | |
1784 | ret = -LTTNG_ERR_NOMEM; | |
1785 | goto end; | |
1786 | } | |
1787 | ||
d2e67842 JG |
1788 | ret = lttng_strncpy(attr->symbol_name, |
1789 | (const char *) content, | |
1790 | LTTNG_SYMBOL_NAME_LEN); | |
1791 | if (ret == -1) { | |
1792 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1793 | (const char *) content, | |
1794 | strlen((const char *) content), | |
1795 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1796 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1797 | free(content); | |
1798 | goto end; | |
1799 | } | |
dcf266c0 JG |
1800 | free(content); |
1801 | } | |
1802 | ret = 0; | |
1803 | end: | |
1804 | return ret; | |
1805 | } | |
1806 | ||
1807 | static | |
1808 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1809 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1810 | { |
d7b645e2 | 1811 | int ret = 0, i; |
dcf266c0 | 1812 | xmlNodePtr node; |
91744e14 | 1813 | struct lttng_event *event; |
dcf266c0 JG |
1814 | char **exclusions = NULL; |
1815 | unsigned long exclusion_count = 0; | |
1816 | char *filter_expression = NULL; | |
1817 | ||
1818 | assert(event_node); | |
1819 | assert(handle); | |
1820 | assert(channel_name); | |
1821 | ||
91744e14 FD |
1822 | event = lttng_event_create(); |
1823 | if (!event) { | |
1824 | ret = -LTTNG_ERR_NOMEM; | |
1825 | goto end; | |
1826 | } | |
dcf266c0 | 1827 | |
f40eba3d JG |
1828 | /* Initialize default log level which varies by domain */ |
1829 | switch (handle->domain.type) | |
1830 | { | |
1831 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1832 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1833 | break; |
1834 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1835 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1836 | break; |
1837 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1838 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1839 | break; |
1840 | case LTTNG_DOMAIN_UST: | |
1841 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1842 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1843 | break; |
1844 | default: | |
1845 | assert(0); | |
1846 | } | |
1847 | ||
dcf266c0 JG |
1848 | for (node = xmlFirstElementChild(event_node); node; |
1849 | node = xmlNextElementSibling(node)) { | |
1850 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1851 | xmlChar *content; | |
dcf266c0 JG |
1852 | |
1853 | /* name */ | |
1854 | content = xmlNodeGetContent(node); | |
1855 | if (!content) { | |
1856 | ret = -LTTNG_ERR_NOMEM; | |
1857 | goto end; | |
1858 | } | |
1859 | ||
91744e14 | 1860 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1861 | (const char *) content, |
1862 | LTTNG_SYMBOL_NAME_LEN); | |
1863 | if (ret == -1) { | |
1864 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1865 | (const char *) content, | |
1866 | strlen((const char *) content), | |
1867 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1868 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1869 | free(content); | |
1870 | goto end; | |
1871 | } | |
dcf266c0 JG |
1872 | free(content); |
1873 | } else if (!strcmp((const char *) node->name, | |
1874 | config_element_enabled)) { | |
1875 | xmlChar *content = xmlNodeGetContent(node); | |
1876 | ||
1877 | /* enabled */ | |
1878 | if (!content) { | |
1879 | ret = -LTTNG_ERR_NOMEM; | |
1880 | goto end; | |
1881 | } | |
1882 | ||
91744e14 | 1883 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1884 | free(content); |
1885 | if (ret) { | |
1886 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1887 | goto end; | |
1888 | } | |
1889 | } else if (!strcmp((const char *) node->name, | |
1890 | config_element_type)) { | |
1891 | xmlChar *content = xmlNodeGetContent(node); | |
1892 | ||
1893 | /* type */ | |
1894 | if (!content) { | |
1895 | ret = -LTTNG_ERR_NOMEM; | |
1896 | goto end; | |
1897 | } | |
1898 | ||
1899 | ret = get_event_type(content); | |
1900 | free(content); | |
1901 | if (ret < 0) { | |
1902 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1903 | goto end; | |
1904 | } | |
1905 | ||
91744e14 | 1906 | event->type = ret; |
dcf266c0 JG |
1907 | } else if (!strcmp((const char *) node->name, |
1908 | config_element_loglevel_type)) { | |
1909 | xmlChar *content = xmlNodeGetContent(node); | |
1910 | ||
1911 | /* loglevel_type */ | |
1912 | if (!content) { | |
1913 | ret = -LTTNG_ERR_NOMEM; | |
1914 | goto end; | |
1915 | } | |
1916 | ||
1917 | ret = get_loglevel_type(content); | |
1918 | free(content); | |
1919 | if (ret < 0) { | |
1920 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1921 | goto end; | |
1922 | } | |
1923 | ||
91744e14 | 1924 | event->loglevel_type = ret; |
dcf266c0 JG |
1925 | } else if (!strcmp((const char *) node->name, |
1926 | config_element_loglevel)) { | |
1927 | xmlChar *content; | |
1928 | int64_t loglevel = 0; | |
1929 | ||
1930 | /* loglevel */ | |
1931 | content = xmlNodeGetContent(node); | |
1932 | if (!content) { | |
1933 | ret = -LTTNG_ERR_NOMEM; | |
1934 | goto end; | |
1935 | } | |
1936 | ||
1937 | ret = parse_int(content, &loglevel); | |
1938 | free(content); | |
1939 | if (ret) { | |
1940 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1941 | goto end; | |
1942 | } | |
1943 | ||
1944 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1945 | WARN("loglevel out of range."); | |
1946 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1947 | goto end; | |
1948 | } | |
1949 | ||
91744e14 | 1950 | event->loglevel = loglevel; |
dcf266c0 JG |
1951 | } else if (!strcmp((const char *) node->name, |
1952 | config_element_filter)) { | |
1953 | xmlChar *content = | |
1954 | xmlNodeGetContent(node); | |
1955 | ||
1956 | /* filter */ | |
1957 | if (!content) { | |
1958 | ret = -LTTNG_ERR_NOMEM; | |
1959 | goto end; | |
1960 | } | |
1961 | ||
02d8ac3d | 1962 | free(filter_expression); |
dcf266c0 JG |
1963 | filter_expression = strdup((char *) content); |
1964 | free(content); | |
1965 | if (!filter_expression) { | |
1966 | ret = -LTTNG_ERR_NOMEM; | |
1967 | goto end; | |
1968 | } | |
1969 | } else if (!strcmp((const char *) node->name, | |
1970 | config_element_exclusions)) { | |
1971 | xmlNodePtr exclusion_node; | |
1972 | int exclusion_index = 0; | |
1973 | ||
1974 | /* exclusions */ | |
1975 | if (exclusions) { | |
1976 | /* | |
1977 | * Exclusions has already been initialized, | |
1978 | * invalid file. | |
1979 | */ | |
1980 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1981 | goto end; | |
1982 | } | |
1983 | ||
1984 | exclusion_count = xmlChildElementCount(node); | |
1985 | if (!exclusion_count) { | |
1986 | continue; | |
1987 | } | |
1988 | ||
1989 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
1990 | if (!exclusions) { | |
1991 | exclusion_count = 0; | |
1992 | ret = -LTTNG_ERR_NOMEM; | |
1993 | goto end; | |
1994 | } | |
1995 | ||
1996 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
1997 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
1998 | xmlChar *content = | |
1999 | xmlNodeGetContent(exclusion_node); | |
2000 | ||
2001 | if (!content) { | |
2002 | ret = -LTTNG_ERR_NOMEM; | |
2003 | goto end; | |
2004 | } | |
2005 | ||
2006 | exclusions[exclusion_index] = strdup((const char *) content); | |
2007 | free(content); | |
2008 | if (!exclusions[exclusion_index]) { | |
2009 | ret = -LTTNG_ERR_NOMEM; | |
2010 | goto end; | |
2011 | } | |
2012 | exclusion_index++; | |
2013 | } | |
2014 | ||
91744e14 | 2015 | event->exclusion = 1; |
dcf266c0 JG |
2016 | } else if (!strcmp((const char *) node->name, |
2017 | config_element_attributes)) { | |
2018 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2019 | ||
2020 | /* attributes */ | |
2021 | if (!attribute_node) { | |
2022 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2023 | goto end; | |
2024 | } | |
2025 | ||
c1e83fb4 | 2026 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2027 | config_element_probe_attributes)) { |
2028 | xmlNodePtr probe_attribute_node; | |
2029 | ||
2030 | /* probe_attributes */ | |
2031 | for (probe_attribute_node = | |
2032 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2033 | probe_attribute_node = xmlNextElementSibling( | |
2034 | probe_attribute_node)) { | |
2035 | ||
2036 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2037 | &event->attr.probe); |
dcf266c0 JG |
2038 | if (ret) { |
2039 | goto end; | |
2040 | } | |
2041 | } | |
c1e83fb4 FD |
2042 | } else if (!strcmp((const char *) attribute_node->name, |
2043 | config_element_function_attributes)) { | |
dcf266c0 JG |
2044 | size_t sym_len; |
2045 | xmlChar *content; | |
2046 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2047 | ||
2048 | /* function_attributes */ | |
2049 | content = xmlNodeGetContent(symbol_node); | |
2050 | if (!content) { | |
2051 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2052 | goto end; | |
2053 | } | |
2054 | ||
2055 | sym_len = strlen((char *) content); | |
2056 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2057 | WARN("Function name too long."); | |
2058 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2059 | free(content); | |
2060 | goto end; | |
2061 | } | |
2062 | ||
d2e67842 | 2063 | ret = lttng_strncpy( |
91744e14 | 2064 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2065 | (char *) content, sym_len); |
2066 | if (ret == -1) { | |
2067 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2068 | free(content); | |
2069 | goto end; | |
2070 | } | |
dcf266c0 | 2071 | free(content); |
c1e83fb4 FD |
2072 | } else if (!strcmp((const char *) attribute_node->name, |
2073 | config_element_userspace_probe_tracepoint_attributes)) { | |
2074 | struct lttng_userspace_probe_location *location; | |
2075 | ||
2076 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2077 | if (!location) { | |
2078 | WARN("Error processing userspace probe tracepoint attribute"); | |
2079 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2080 | goto end; | |
2081 | } | |
2082 | ret = lttng_event_set_userspace_probe_location( | |
2083 | event, location); | |
2084 | if (ret) { | |
2085 | WARN("Error setting userspace probe location field"); | |
2086 | lttng_userspace_probe_location_destroy( | |
2087 | location); | |
2088 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2089 | goto end; | |
2090 | } | |
2091 | } else if (!strcmp((const char *) attribute_node->name, | |
2092 | config_element_userspace_probe_function_attributes)) { | |
2093 | struct lttng_userspace_probe_location *location; | |
2094 | ||
2095 | location = | |
2096 | process_userspace_probe_function_attribute_node( | |
2097 | attribute_node); | |
2098 | if (!location) { | |
2099 | WARN("Error processing userspace probe function attribute"); | |
2100 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2101 | goto end; | |
2102 | } | |
2103 | ||
2104 | ret = lttng_event_set_userspace_probe_location( | |
2105 | event, location); | |
2106 | if (ret) { | |
2107 | WARN("Error setting userspace probe location field"); | |
2108 | lttng_userspace_probe_location_destroy( | |
2109 | location); | |
2110 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2111 | goto end; | |
2112 | } | |
2113 | } else { | |
2114 | /* Unknown event attribute. */ | |
2115 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2116 | goto end; | |
dcf266c0 JG |
2117 | } |
2118 | } | |
2119 | } | |
2120 | ||
91744e14 FD |
2121 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2122 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2123 | filter_expression, exclusion_count, exclusions); |
2124 | if (ret < 0) { | |
91744e14 | 2125 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2126 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2127 | goto end; | |
2128 | } | |
065321e9 | 2129 | } |
d2e67842 | 2130 | ret = 0; |
dcf266c0 JG |
2131 | end: |
2132 | for (i = 0; i < exclusion_count; i++) { | |
2133 | free(exclusions[i]); | |
2134 | } | |
2135 | ||
b33f872b | 2136 | lttng_event_destroy(event); |
dcf266c0 JG |
2137 | free(exclusions); |
2138 | free(filter_expression); | |
2139 | return ret; | |
2140 | } | |
2141 | ||
2142 | static | |
2143 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2144 | const char *channel_name) | |
2145 | { | |
2146 | int ret = 0; | |
d7b645e2 | 2147 | struct lttng_event event; |
dcf266c0 JG |
2148 | xmlNodePtr node; |
2149 | ||
2150 | assert(events_node); | |
2151 | assert(handle); | |
2152 | assert(channel_name); | |
2153 | ||
2154 | for (node = xmlFirstElementChild(events_node); node; | |
2155 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2156 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2157 | if (ret) { |
2158 | goto end; | |
2159 | } | |
2160 | } | |
d7b645e2 JR |
2161 | |
2162 | /* | |
2163 | * Disable all events to enable only the necessary events. | |
2164 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2165 | * force this approach. | |
2166 | */ | |
2167 | memset(&event, 0, sizeof(event)); | |
2168 | event.loglevel = -1; | |
2169 | event.type = LTTNG_EVENT_ALL; | |
2170 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2171 | if (ret) { | |
2172 | goto end; | |
2173 | } | |
2174 | ||
2175 | for (node = xmlFirstElementChild(events_node); node; | |
2176 | node = xmlNextElementSibling(node)) { | |
2177 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2178 | if (ret) { | |
2179 | goto end; | |
2180 | } | |
2181 | } | |
2182 | ||
dcf266c0 JG |
2183 | end: |
2184 | return ret; | |
2185 | } | |
2186 | ||
2187 | static | |
2188 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2189 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2190 | xmlNodePtr *events_node) | |
2191 | { | |
2192 | int ret; | |
2193 | ||
2194 | assert(attr_node); | |
2195 | assert(channel); | |
2196 | assert(contexts_node); | |
2197 | assert(events_node); | |
2198 | ||
2199 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2200 | xmlChar *content; | |
dcf266c0 JG |
2201 | |
2202 | /* name */ | |
2203 | content = xmlNodeGetContent(attr_node); | |
2204 | if (!content) { | |
2205 | ret = -LTTNG_ERR_NOMEM; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
d2e67842 JG |
2209 | ret = lttng_strncpy(channel->name, |
2210 | (const char *) content, | |
2211 | LTTNG_SYMBOL_NAME_LEN); | |
2212 | if (ret == -1) { | |
2213 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2214 | (const char *) content, | |
2215 | strlen((const char *) content), | |
2216 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2217 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2218 | free(content); | |
2219 | goto end; | |
2220 | } | |
dcf266c0 JG |
2221 | free(content); |
2222 | } else if (!strcmp((const char *) attr_node->name, | |
2223 | config_element_enabled)) { | |
2224 | xmlChar *content; | |
2225 | int enabled; | |
2226 | ||
2227 | /* enabled */ | |
2228 | content = xmlNodeGetContent(attr_node); | |
2229 | if (!content) { | |
2230 | ret = -LTTNG_ERR_NOMEM; | |
2231 | goto end; | |
2232 | } | |
2233 | ||
2234 | ret = parse_bool(content, &enabled); | |
2235 | free(content); | |
2236 | if (ret) { | |
2237 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2238 | goto end; | |
2239 | } | |
2240 | ||
2241 | channel->enabled = enabled; | |
2242 | } else if (!strcmp((const char *) attr_node->name, | |
2243 | config_element_overwrite_mode)) { | |
2244 | xmlChar *content; | |
2245 | ||
2246 | /* overwrite_mode */ | |
2247 | content = xmlNodeGetContent(attr_node); | |
2248 | if (!content) { | |
2249 | ret = -LTTNG_ERR_NOMEM; | |
2250 | goto end; | |
2251 | } | |
2252 | ||
2253 | ret = get_overwrite_mode(content); | |
2254 | free(content); | |
2255 | if (ret < 0) { | |
2256 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2257 | goto end; | |
2258 | } | |
2259 | ||
2260 | channel->attr.overwrite = ret; | |
2261 | } else if (!strcmp((const char *) attr_node->name, | |
2262 | config_element_subbuf_size)) { | |
2263 | xmlChar *content; | |
2264 | ||
2265 | /* subbuffer_size */ | |
2266 | content = xmlNodeGetContent(attr_node); | |
2267 | if (!content) { | |
2268 | ret = -LTTNG_ERR_NOMEM; | |
2269 | goto end; | |
2270 | } | |
2271 | ||
2272 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2273 | free(content); | |
2274 | if (ret) { | |
2275 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2276 | goto end; | |
2277 | } | |
2278 | } else if (!strcmp((const char *) attr_node->name, | |
2279 | config_element_num_subbuf)) { | |
2280 | xmlChar *content; | |
2281 | ||
2282 | /* subbuffer_count */ | |
2283 | content = xmlNodeGetContent(attr_node); | |
2284 | if (!content) { | |
2285 | ret = -LTTNG_ERR_NOMEM; | |
2286 | goto end; | |
2287 | } | |
2288 | ||
2289 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2290 | free(content); | |
2291 | if (ret) { | |
2292 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2293 | goto end; | |
2294 | } | |
2295 | } else if (!strcmp((const char *) attr_node->name, | |
2296 | config_element_switch_timer_interval)) { | |
2297 | xmlChar *content; | |
2298 | uint64_t switch_timer_interval = 0; | |
2299 | ||
2300 | /* switch_timer_interval */ | |
2301 | content = xmlNodeGetContent(attr_node); | |
2302 | if (!content) { | |
2303 | ret = -LTTNG_ERR_NOMEM; | |
2304 | goto end; | |
2305 | } | |
2306 | ||
2307 | ret = parse_uint(content, &switch_timer_interval); | |
2308 | free(content); | |
2309 | if (ret) { | |
2310 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2311 | goto end; | |
2312 | } | |
2313 | ||
2314 | if (switch_timer_interval > UINT_MAX) { | |
2315 | WARN("switch_timer_interval out of range."); | |
2316 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2317 | goto end; | |
2318 | } | |
2319 | ||
2320 | channel->attr.switch_timer_interval = | |
2321 | switch_timer_interval; | |
2322 | } else if (!strcmp((const char *) attr_node->name, | |
2323 | config_element_read_timer_interval)) { | |
2324 | xmlChar *content; | |
2325 | uint64_t read_timer_interval = 0; | |
2326 | ||
2327 | /* read_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, &read_timer_interval); | |
2335 | free(content); | |
2336 | if (ret) { | |
2337 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2338 | goto end; | |
2339 | } | |
2340 | ||
2341 | if (read_timer_interval > UINT_MAX) { | |
2342 | WARN("read_timer_interval out of range."); | |
2343 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2344 | goto end; | |
2345 | } | |
2346 | ||
2347 | channel->attr.read_timer_interval = | |
2348 | read_timer_interval; | |
2349 | } else if (!strcmp((const char *) attr_node->name, | |
2350 | config_element_output_type)) { | |
2351 | xmlChar *content; | |
2352 | ||
2353 | /* output_type */ | |
2354 | content = xmlNodeGetContent(attr_node); | |
2355 | if (!content) { | |
2356 | ret = -LTTNG_ERR_NOMEM; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | ret = get_output_type(content); | |
2361 | free(content); | |
2362 | if (ret < 0) { | |
2363 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2364 | goto end; | |
2365 | } | |
2366 | ||
2367 | channel->attr.output = ret; | |
2368 | } else if (!strcmp((const char *) attr_node->name, | |
2369 | config_element_tracefile_size)) { | |
2370 | xmlChar *content; | |
2371 | ||
2372 | /* tracefile_size */ | |
2373 | content = xmlNodeGetContent(attr_node); | |
2374 | if (!content) { | |
2375 | ret = -LTTNG_ERR_NOMEM; | |
2376 | goto end; | |
2377 | } | |
2378 | ||
2379 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2380 | free(content); | |
2381 | if (ret) { | |
2382 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2383 | goto end; | |
2384 | } | |
2385 | } else if (!strcmp((const char *) attr_node->name, | |
2386 | config_element_tracefile_count)) { | |
2387 | xmlChar *content; | |
2388 | ||
2389 | /* tracefile_count */ | |
2390 | content = xmlNodeGetContent(attr_node); | |
2391 | if (!content) { | |
2392 | ret = -LTTNG_ERR_NOMEM; | |
2393 | goto end; | |
2394 | } | |
2395 | ||
2396 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2397 | free(content); | |
2398 | if (ret) { | |
2399 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2400 | goto end; | |
2401 | } | |
2402 | } else if (!strcmp((const char *) attr_node->name, | |
2403 | config_element_live_timer_interval)) { | |
2404 | xmlChar *content; | |
2405 | uint64_t live_timer_interval = 0; | |
2406 | ||
2407 | /* live_timer_interval */ | |
2408 | content = xmlNodeGetContent(attr_node); | |
2409 | if (!content) { | |
2410 | ret = -LTTNG_ERR_NOMEM; | |
2411 | goto end; | |
2412 | } | |
2413 | ||
2414 | ret = parse_uint(content, &live_timer_interval); | |
2415 | free(content); | |
2416 | if (ret) { | |
2417 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2418 | goto end; | |
2419 | } | |
2420 | ||
2421 | if (live_timer_interval > UINT_MAX) { | |
2422 | WARN("live_timer_interval out of range."); | |
2423 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2424 | goto end; | |
2425 | } | |
2426 | ||
2427 | channel->attr.live_timer_interval = | |
2428 | live_timer_interval; | |
4fc2b126 JR |
2429 | } else if (!strcmp((const char *) attr_node->name, |
2430 | config_element_monitor_timer_interval)) { | |
2431 | xmlChar *content; | |
2432 | uint64_t monitor_timer_interval = 0; | |
2433 | ||
2434 | /* monitor_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, &monitor_timer_interval); | |
2442 | free(content); | |
2443 | if (ret) { | |
2444 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2445 | goto end; | |
2446 | } | |
2447 | ||
2448 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2449 | monitor_timer_interval); | |
2450 | if (ret) { | |
2451 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2452 | goto end; | |
2453 | } | |
275472aa JR |
2454 | } else if (!strcmp((const char *) attr_node->name, |
2455 | config_element_blocking_timeout)) { | |
2456 | xmlChar *content; | |
2457 | int64_t blocking_timeout = 0; | |
2458 | ||
2459 | /* blocking_timeout */ | |
2460 | content = xmlNodeGetContent(attr_node); | |
2461 | if (!content) { | |
2462 | ret = -LTTNG_ERR_NOMEM; | |
2463 | goto end; | |
2464 | } | |
2465 | ||
2466 | ret = parse_int(content, &blocking_timeout); | |
2467 | free(content); | |
2468 | if (ret) { | |
2469 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2470 | goto end; | |
2471 | } | |
2472 | ||
2473 | ret = lttng_channel_set_blocking_timeout(channel, | |
2474 | blocking_timeout); | |
2475 | if (ret) { | |
2476 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2477 | goto end; | |
2478 | } | |
dcf266c0 JG |
2479 | } else if (!strcmp((const char *) attr_node->name, |
2480 | config_element_events)) { | |
2481 | /* events */ | |
2482 | *events_node = attr_node; | |
2483 | } else { | |
2484 | /* contexts */ | |
2485 | *contexts_node = attr_node; | |
2486 | } | |
2487 | ret = 0; | |
2488 | end: | |
2489 | return ret; | |
2490 | } | |
2491 | ||
2492 | static | |
2493 | int process_context_node(xmlNodePtr context_node, | |
2494 | struct lttng_handle *handle, const char *channel_name) | |
2495 | { | |
2496 | int ret; | |
2497 | struct lttng_event_context context; | |
2498 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2499 | ||
2500 | assert(handle); | |
2501 | assert(channel_name); | |
2502 | ||
2503 | if (!context_child_node) { | |
2504 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2505 | goto end; | |
2506 | } | |
2507 | ||
2508 | memset(&context, 0, sizeof(context)); | |
2509 | ||
2510 | if (!strcmp((const char *) context_child_node->name, | |
2511 | config_element_type)) { | |
2512 | /* type */ | |
2513 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2514 | |
dcf266c0 JG |
2515 | if (!content) { |
2516 | ret = -LTTNG_ERR_NOMEM; | |
2517 | goto end; | |
2518 | } | |
2519 | ||
2520 | ret = get_context_type(content); | |
2521 | free(content); | |
2522 | if (ret < 0) { | |
2523 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2524 | goto end; | |
2525 | } | |
2526 | ||
2527 | context.ctx = ret; | |
045fc617 JG |
2528 | } else if (!strcmp((const char *) context_child_node->name, |
2529 | config_element_context_perf)) { | |
2530 | /* perf */ | |
dcf266c0 JG |
2531 | xmlNodePtr perf_attr_node; |
2532 | ||
14ce5bd8 JG |
2533 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2534 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2535 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2536 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2537 | perf_attr_node; perf_attr_node = | |
2538 | xmlNextElementSibling(perf_attr_node)) { | |
2539 | if (!strcmp((const char *) perf_attr_node->name, | |
2540 | config_element_type)) { | |
2541 | xmlChar *content; | |
2542 | uint64_t type = 0; | |
2543 | ||
2544 | /* type */ | |
2545 | content = xmlNodeGetContent(perf_attr_node); | |
2546 | if (!content) { | |
2547 | ret = -LTTNG_ERR_NOMEM; | |
2548 | goto end; | |
2549 | } | |
2550 | ||
2551 | ret = parse_uint(content, &type); | |
2552 | free(content); | |
2553 | if (ret) { | |
2554 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2555 | goto end; | |
2556 | } | |
2557 | ||
2558 | if (type > UINT32_MAX) { | |
2559 | WARN("perf context type out of range."); | |
2560 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2561 | goto end; | |
2562 | } | |
2563 | ||
2564 | context.u.perf_counter.type = type; | |
2565 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2566 | config_element_config)) { | |
2567 | xmlChar *content; | |
2568 | uint64_t config = 0; | |
2569 | ||
2570 | /* config */ | |
2571 | content = xmlNodeGetContent(perf_attr_node); | |
2572 | if (!content) { | |
2573 | ret = -LTTNG_ERR_NOMEM; | |
2574 | goto end; | |
2575 | } | |
2576 | ||
2577 | ret = parse_uint(content, &config); | |
2578 | free(content); | |
2579 | if (ret) { | |
2580 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2581 | goto end; | |
2582 | } | |
2583 | ||
2584 | context.u.perf_counter.config = config; | |
2585 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2586 | config_element_name)) { | |
2587 | xmlChar *content; | |
dcf266c0 JG |
2588 | |
2589 | /* name */ | |
2590 | content = xmlNodeGetContent(perf_attr_node); | |
2591 | if (!content) { | |
2592 | ret = -LTTNG_ERR_NOMEM; | |
2593 | goto end; | |
2594 | } | |
2595 | ||
d2e67842 JG |
2596 | ret = lttng_strncpy(context.u.perf_counter.name, |
2597 | (const char *) content, | |
2598 | LTTNG_SYMBOL_NAME_LEN); | |
2599 | if (ret == -1) { | |
2600 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2601 | (const char *) content, | |
2602 | strlen((const char *) content), | |
2603 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2604 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2605 | free(content); | |
2606 | goto end; | |
2607 | } | |
dcf266c0 JG |
2608 | free(content); |
2609 | } | |
2610 | } | |
045fc617 JG |
2611 | } else if (!strcmp((const char *) context_child_node->name, |
2612 | config_element_context_app)) { | |
2613 | /* application context */ | |
2614 | xmlNodePtr app_ctx_node; | |
2615 | ||
2616 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2617 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2618 | app_ctx_node; app_ctx_node = | |
2619 | xmlNextElementSibling(app_ctx_node)) { | |
2620 | xmlChar *content; | |
2621 | char **target = strcmp( | |
2622 | (const char *) app_ctx_node->name, | |
2623 | config_element_context_app_provider_name) == 0 ? | |
2624 | &context.u.app_ctx.provider_name : | |
2625 | &context.u.app_ctx.ctx_name; | |
2626 | ||
2627 | content = xmlNodeGetContent(app_ctx_node); | |
2628 | if (!content) { | |
2629 | ret = -LTTNG_ERR_NOMEM; | |
2630 | goto end; | |
2631 | } | |
2632 | ||
2633 | *target = (char *) content; | |
2634 | } | |
2635 | } else { | |
2636 | /* Unrecognized context type */ | |
2637 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2638 | goto end; | |
dcf266c0 JG |
2639 | } |
2640 | ||
2641 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2642 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2643 | free(context.u.app_ctx.provider_name); | |
2644 | free(context.u.app_ctx.ctx_name); | |
2645 | } | |
dcf266c0 JG |
2646 | end: |
2647 | return ret; | |
2648 | } | |
2649 | ||
2650 | static | |
2651 | int process_contexts_node(xmlNodePtr contexts_node, | |
2652 | struct lttng_handle *handle, const char *channel_name) | |
2653 | { | |
2654 | int ret = 0; | |
2655 | xmlNodePtr context_node; | |
2656 | ||
2657 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2658 | context_node = xmlNextElementSibling(context_node)) { | |
2659 | ret = process_context_node(context_node, handle, channel_name); | |
2660 | if (ret) { | |
2661 | goto end; | |
2662 | } | |
2663 | } | |
2664 | end: | |
2665 | return ret; | |
2666 | } | |
2667 | ||
55c9e7ca JR |
2668 | static int get_tracker_elements(enum lttng_tracker_type tracker_type, |
2669 | const char **element_id_tracker, | |
2670 | const char **element_target_id, | |
2671 | const char **element_id, | |
2672 | const char **element_id_alias, | |
2673 | const char **element_name) | |
2674 | { | |
2675 | int ret = 0; | |
2676 | ||
2677 | switch (tracker_type) { | |
2678 | case LTTNG_TRACKER_PID: | |
2679 | *element_id_tracker = config_element_pid_tracker; | |
2680 | *element_target_id = config_element_target_pid; | |
2681 | *element_id = config_element_id; | |
2682 | *element_id_alias = config_element_pid; | |
2683 | *element_name = NULL; | |
2684 | break; | |
2685 | case LTTNG_TRACKER_VPID: | |
2686 | *element_id_tracker = config_element_vpid_tracker; | |
2687 | *element_target_id = config_element_target_vpid; | |
2688 | *element_id = config_element_id; | |
2689 | *element_id_alias = NULL; | |
2690 | *element_name = NULL; | |
2691 | break; | |
2692 | case LTTNG_TRACKER_UID: | |
2693 | *element_id_tracker = config_element_uid_tracker; | |
2694 | *element_target_id = config_element_target_uid; | |
2695 | *element_id = config_element_id; | |
2696 | *element_id_alias = NULL; | |
2697 | *element_name = config_element_name; | |
2698 | break; | |
2699 | case LTTNG_TRACKER_VUID: | |
2700 | *element_id_tracker = config_element_vuid_tracker; | |
2701 | *element_target_id = config_element_target_vuid; | |
2702 | *element_id = config_element_id; | |
2703 | *element_id_alias = NULL; | |
2704 | *element_name = config_element_name; | |
2705 | break; | |
2706 | case LTTNG_TRACKER_GID: | |
2707 | *element_id_tracker = config_element_gid_tracker; | |
2708 | *element_target_id = config_element_target_gid; | |
2709 | *element_id = config_element_id; | |
2710 | *element_id_alias = NULL; | |
2711 | *element_name = config_element_name; | |
2712 | break; | |
2713 | case LTTNG_TRACKER_VGID: | |
2714 | *element_id_tracker = config_element_vgid_tracker; | |
2715 | *element_target_id = config_element_target_vgid; | |
2716 | *element_id = config_element_id; | |
2717 | *element_id_alias = NULL; | |
2718 | *element_name = config_element_name; | |
2719 | break; | |
2720 | default: | |
2721 | ret = LTTNG_ERR_INVALID; | |
2722 | } | |
2723 | return ret; | |
2724 | } | |
2725 | ||
2726 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, | |
2727 | struct lttng_handle *handle, | |
2728 | enum lttng_tracker_type tracker_type) | |
847a5916 | 2729 | { |
dd49e13f | 2730 | int ret = 0, child; |
847a5916 JR |
2731 | xmlNodePtr targets_node = NULL; |
2732 | xmlNodePtr node; | |
55c9e7ca JR |
2733 | const char *element_id_tracker; |
2734 | const char *element_target_id; | |
2735 | const char *element_id; | |
2736 | const char *element_id_alias; | |
2737 | const char *element_name; | |
2d97a006 | 2738 | enum lttng_tracker_id_status status; |
847a5916 JR |
2739 | |
2740 | assert(handle); | |
55c9e7ca JR |
2741 | assert(id_tracker_node); |
2742 | ||
2743 | ret = get_tracker_elements(tracker_type, &element_id_tracker, | |
2744 | &element_target_id, &element_id, &element_id_alias, | |
2745 | &element_name); | |
2746 | if (ret) { | |
2747 | return ret; | |
2748 | } | |
2749 | ||
847a5916 | 2750 | /* get the targets node */ |
55c9e7ca JR |
2751 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2752 | node = xmlNextElementSibling(node)) { | |
847a5916 JR |
2753 | if (!strcmp((const char *) node->name, |
2754 | config_element_targets)) { | |
2755 | targets_node = node; | |
2756 | break; | |
2757 | } | |
2758 | } | |
2759 | ||
2760 | if (!targets_node) { | |
2761 | ret = LTTNG_ERR_INVALID; | |
2762 | goto end; | |
2763 | } | |
2764 | ||
55c9e7ca | 2765 | /* Go through all id target node */ |
847a5916 JR |
2766 | child = xmlChildElementCount(targets_node); |
2767 | if (child == 0) { | |
2d97a006 JR |
2768 | struct lttng_tracker_id *tracker_id = NULL; |
2769 | tracker_id = lttng_tracker_id_create(); | |
2770 | if (tracker_id == NULL) { | |
2771 | ret = LTTNG_ERR_NOMEM; | |
2772 | goto end; | |
2773 | } | |
2774 | status = lttng_tracker_id_set_all(tracker_id); | |
2775 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2776 | ret = LTTNG_ERR_INVALID; | |
2777 | goto end; | |
2778 | } | |
55c9e7ca | 2779 | |
847a5916 | 2780 | /* The session is explicitly set to target nothing. */ |
2d97a006 JR |
2781 | ret = lttng_untrack_id(handle, tracker_type, tracker_id); |
2782 | lttng_tracker_id_destroy(tracker_id); | |
847a5916 JR |
2783 | if (ret) { |
2784 | goto end; | |
2785 | } | |
2786 | } | |
2787 | for (node = xmlFirstElementChild(targets_node); node; | |
2788 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 2789 | xmlNodePtr id_target_node = node; |
847a5916 | 2790 | |
55c9e7ca JR |
2791 | /* get id node and track it */ |
2792 | for (node = xmlFirstElementChild(id_target_node); node; | |
2793 | node = xmlNextElementSibling(node)) { | |
2794 | if (!strcmp((const char *) node->name, element_id) || | |
2795 | (element_id_alias && | |
2796 | !strcmp((const char *) node->name, | |
2797 | element_id_alias))) { | |
2798 | int64_t id; | |
847a5916 | 2799 | xmlChar *content = NULL; |
2d97a006 | 2800 | struct lttng_tracker_id *tracker_id = NULL; |
847a5916 JR |
2801 | |
2802 | content = xmlNodeGetContent(node); | |
2803 | if (!content) { | |
2804 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2805 | goto end; | |
2806 | } | |
2807 | ||
55c9e7ca | 2808 | ret = parse_int(content, &id); |
847a5916 JR |
2809 | free(content); |
2810 | if (ret) { | |
2811 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2812 | goto end; | |
2813 | } | |
2814 | ||
2d97a006 JR |
2815 | tracker_id = lttng_tracker_id_create(); |
2816 | if (tracker_id == NULL) { | |
2817 | ret = LTTNG_ERR_NOMEM; | |
2818 | goto end; | |
2819 | } | |
2820 | ||
2821 | status = lttng_tracker_id_set_value( | |
2822 | tracker_id, id); | |
2823 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2824 | lttng_tracker_id_destroy(tracker_id); | |
2825 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2826 | goto end; | |
2827 | } | |
2828 | ||
55c9e7ca | 2829 | ret = lttng_track_id(handle, tracker_type, |
2d97a006 JR |
2830 | tracker_id); |
2831 | lttng_tracker_id_destroy(tracker_id); | |
55c9e7ca JR |
2832 | if (ret) { |
2833 | goto end; | |
2834 | } | |
2835 | } | |
2836 | if (element_name && !strcmp((const char *) node->name, | |
2837 | element_name)) { | |
2838 | xmlChar *content = NULL; | |
2d97a006 | 2839 | struct lttng_tracker_id *tracker_id = NULL; |
55c9e7ca JR |
2840 | |
2841 | content = xmlNodeGetContent(node); | |
2842 | if (!content) { | |
2843 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2844 | goto end; | |
2845 | } | |
2d97a006 JR |
2846 | |
2847 | tracker_id = lttng_tracker_id_create(); | |
2848 | if (tracker_id == NULL) { | |
2849 | ret = LTTNG_ERR_NOMEM; | |
2850 | goto end; | |
2851 | } | |
2852 | ||
2853 | status = lttng_tracker_id_set_string(tracker_id, | |
2854 | (const char *) content); | |
2855 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { | |
2856 | lttng_tracker_id_destroy(tracker_id); | |
2857 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2858 | goto end; | |
2859 | } | |
2860 | ||
55c9e7ca | 2861 | ret = lttng_track_id(handle, tracker_type, |
2d97a006 JR |
2862 | tracker_id); |
2863 | lttng_tracker_id_destroy(tracker_id); | |
55c9e7ca | 2864 | free(content); |
847a5916 JR |
2865 | if (ret) { |
2866 | goto end; | |
2867 | } | |
2868 | } | |
2869 | } | |
55c9e7ca | 2870 | node = id_target_node; |
847a5916 JR |
2871 | } |
2872 | ||
2873 | end: | |
2874 | return ret; | |
2875 | } | |
2876 | ||
dcf266c0 JG |
2877 | static |
2878 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
2879 | { | |
2880 | int ret; | |
2881 | struct lttng_domain domain = { 0 }; | |
2882 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 2883 | struct lttng_channel *channel = NULL; |
dcf266c0 | 2884 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
2885 | xmlNodePtr trackers_node = NULL; |
2886 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
2887 | xmlNodePtr vpid_tracker_node = NULL; |
2888 | xmlNodePtr uid_tracker_node = NULL; | |
2889 | xmlNodePtr vuid_tracker_node = NULL; | |
2890 | xmlNodePtr gid_tracker_node = NULL; | |
2891 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
2892 | xmlNodePtr node; |
2893 | ||
2894 | assert(session_name); | |
2895 | ||
2896 | ret = init_domain(domain_node, &domain); | |
2897 | if (ret) { | |
2898 | goto end; | |
2899 | } | |
2900 | ||
2901 | handle = lttng_create_handle(session_name, &domain); | |
2902 | if (!handle) { | |
2903 | ret = -LTTNG_ERR_NOMEM; | |
2904 | goto end; | |
2905 | } | |
2906 | ||
2907 | /* get the channels node */ | |
2908 | for (node = xmlFirstElementChild(domain_node); node; | |
2909 | node = xmlNextElementSibling(node)) { | |
2910 | if (!strcmp((const char *) node->name, | |
2911 | config_element_channels)) { | |
2912 | channels_node = node; | |
2913 | break; | |
2914 | } | |
2915 | } | |
2916 | ||
2917 | if (!channels_node) { | |
2918 | goto end; | |
2919 | } | |
2920 | ||
2921 | /* create all channels */ | |
2922 | for (node = xmlFirstElementChild(channels_node); node; | |
2923 | node = xmlNextElementSibling(node)) { | |
36d1687c | 2924 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
2925 | xmlNodePtr contexts_node = NULL; |
2926 | xmlNodePtr events_node = NULL; | |
2927 | xmlNodePtr channel_attr_node; | |
2928 | ||
36d1687c JG |
2929 | /* |
2930 | * Channels of the "agent" types cannot be created directly. | |
2931 | * They are meant to be created implicitly through the | |
2932 | * activation of events in their domain. However, a user | |
2933 | * can override the default channel configuration attributes | |
2934 | * by creating the underlying UST channel _before_ enabling | |
2935 | * an agent domain event. | |
2936 | * | |
2937 | * Hence, the channel's type is substituted before the creation | |
2938 | * and restored by the time the events are created. | |
2939 | */ | |
2940 | switch (domain.type) { | |
2941 | case LTTNG_DOMAIN_JUL: | |
2942 | case LTTNG_DOMAIN_LOG4J: | |
2943 | case LTTNG_DOMAIN_PYTHON: | |
2944 | domain.type = LTTNG_DOMAIN_UST; | |
2945 | default: | |
2946 | break; | |
2947 | } | |
2948 | ||
4fc2b126 JR |
2949 | channel = lttng_channel_create(&domain); |
2950 | if (!channel) { | |
2951 | ret = -1; | |
2952 | goto end; | |
2953 | } | |
dcf266c0 JG |
2954 | |
2955 | for (channel_attr_node = xmlFirstElementChild(node); | |
2956 | channel_attr_node; channel_attr_node = | |
2957 | xmlNextElementSibling(channel_attr_node)) { | |
2958 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 2959 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
2960 | if (ret) { |
2961 | goto end; | |
2962 | } | |
2963 | } | |
2964 | ||
4fc2b126 | 2965 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
2966 | if (ret < 0) { |
2967 | goto end; | |
2968 | } | |
2969 | ||
36d1687c JG |
2970 | /* Restore the original channel domain. */ |
2971 | domain.type = original_domain; | |
2972 | ||
4fc2b126 | 2973 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
2974 | if (ret) { |
2975 | goto end; | |
2976 | } | |
2977 | ||
2978 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 2979 | channel->name); |
dcf266c0 JG |
2980 | if (ret) { |
2981 | goto end; | |
2982 | } | |
4fc2b126 JR |
2983 | |
2984 | lttng_channel_destroy(channel); | |
dcf266c0 | 2985 | } |
4fc2b126 | 2986 | channel = NULL; |
847a5916 JR |
2987 | |
2988 | /* get the trackers node */ | |
2989 | for (node = xmlFirstElementChild(domain_node); node; | |
2990 | node = xmlNextElementSibling(node)) { | |
2991 | if (!strcmp((const char *) node->name, | |
2992 | config_element_trackers)) { | |
2993 | trackers_node = node; | |
2994 | break; | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | if (!trackers_node) { | |
2999 | goto end; | |
3000 | } | |
3001 | ||
3002 | for (node = xmlFirstElementChild(trackers_node); node; | |
3003 | node = xmlNextElementSibling(node)) { | |
55c9e7ca JR |
3004 | if (!strcmp((const char *) node->name, |
3005 | config_element_pid_tracker)) { | |
847a5916 | 3006 | pid_tracker_node = node; |
55c9e7ca JR |
3007 | ret = process_id_tracker_node(pid_tracker_node, handle, |
3008 | LTTNG_TRACKER_PID); | |
3009 | if (ret) { | |
3010 | goto end; | |
3011 | } | |
3012 | } | |
3013 | if (!strcmp((const char *) node->name, | |
3014 | config_element_vpid_tracker)) { | |
3015 | vpid_tracker_node = node; | |
3016 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
3017 | LTTNG_TRACKER_VPID); | |
3018 | if (ret) { | |
3019 | goto end; | |
3020 | } | |
3021 | } | |
3022 | if (!strcmp((const char *) node->name, | |
3023 | config_element_uid_tracker)) { | |
3024 | uid_tracker_node = node; | |
3025 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
3026 | LTTNG_TRACKER_UID); | |
3027 | if (ret) { | |
3028 | goto end; | |
3029 | } | |
3030 | } | |
3031 | if (!strcmp((const char *) node->name, | |
3032 | config_element_vuid_tracker)) { | |
3033 | vuid_tracker_node = node; | |
3034 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
3035 | LTTNG_TRACKER_VUID); | |
3036 | if (ret) { | |
3037 | goto end; | |
3038 | } | |
3039 | } | |
3040 | if (!strcmp((const char *) node->name, | |
3041 | config_element_gid_tracker)) { | |
3042 | gid_tracker_node = node; | |
3043 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
3044 | LTTNG_TRACKER_GID); | |
3045 | if (ret) { | |
3046 | goto end; | |
3047 | } | |
3048 | } | |
3049 | if (!strcmp((const char *) node->name, | |
3050 | config_element_vgid_tracker)) { | |
3051 | vgid_tracker_node = node; | |
3052 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
3053 | LTTNG_TRACKER_VGID); | |
847a5916 JR |
3054 | if (ret) { |
3055 | goto end; | |
3056 | } | |
3057 | } | |
847a5916 JR |
3058 | } |
3059 | ||
dcf266c0 | 3060 | end: |
4fc2b126 | 3061 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3062 | lttng_destroy_handle(handle); |
3063 | return ret; | |
3064 | } | |
3065 | ||
66ea93b1 JG |
3066 | static |
3067 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3068 | { | |
3069 | int ret; | |
3070 | enum lttng_rotation_status status; | |
3071 | struct lttng_rotation_schedule *periodic = | |
3072 | lttng_rotation_schedule_periodic_create(); | |
3073 | ||
3074 | if (!periodic) { | |
3075 | ret = -LTTNG_ERR_NOMEM; | |
3076 | goto error; | |
3077 | } | |
3078 | ||
3079 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3080 | time_us); | |
3081 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3082 | ret = -LTTNG_ERR_INVALID; | |
3083 | goto error; | |
3084 | } | |
3085 | ||
3086 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3087 | switch (status) { | |
3088 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3089 | ret = 0; |
66ea93b1 JG |
3090 | break; |
3091 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3092 | case LTTNG_ROTATION_STATUS_INVALID: | |
3093 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3094 | break; | |
3095 | default: | |
3096 | ret = -LTTNG_ERR_UNK; | |
3097 | break; | |
3098 | } | |
3099 | error: | |
3100 | lttng_rotation_schedule_destroy(periodic); | |
3101 | return ret; | |
3102 | } | |
3103 | ||
3104 | static | |
3105 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3106 | { | |
3107 | int ret; | |
3108 | enum lttng_rotation_status status; | |
3109 | struct lttng_rotation_schedule *size = | |
3110 | lttng_rotation_schedule_size_threshold_create(); | |
3111 | ||
3112 | if (!size) { | |
3113 | ret = -LTTNG_ERR_NOMEM; | |
3114 | goto error; | |
3115 | } | |
3116 | ||
3117 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3118 | size_bytes); | |
3119 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3120 | ret = -LTTNG_ERR_INVALID; | |
3121 | goto error; | |
3122 | } | |
3123 | ||
3124 | status = lttng_session_add_rotation_schedule(name, size); | |
3125 | switch (status) { | |
3126 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3127 | ret = 0; |
66ea93b1 JG |
3128 | break; |
3129 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3130 | case LTTNG_ROTATION_STATUS_INVALID: | |
3131 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3132 | break; | |
3133 | default: | |
3134 | ret = -LTTNG_ERR_UNK; | |
3135 | break; | |
3136 | } | |
3137 | error: | |
3138 | lttng_rotation_schedule_destroy(size); | |
3139 | return ret; | |
3140 | } | |
3141 | ||
ce6176f2 JG |
3142 | static |
3143 | int process_session_rotation_schedules_node( | |
3144 | xmlNodePtr schedules_node, | |
3145 | uint64_t *rotation_timer_interval, | |
3146 | uint64_t *rotation_size) | |
3147 | { | |
3148 | int ret = 0; | |
3149 | xmlNodePtr child; | |
3150 | ||
3151 | for (child = xmlFirstElementChild(schedules_node); | |
3152 | child; | |
3153 | child = xmlNextElementSibling(child)) { | |
3154 | if (!strcmp((const char *) child->name, | |
3155 | config_element_rotation_schedule_periodic)) { | |
3156 | xmlChar *content; | |
3157 | xmlNodePtr time_us_node; | |
3158 | ||
3159 | /* periodic rotation schedule */ | |
3160 | time_us_node = xmlFirstElementChild(child); | |
3161 | if (!time_us_node || | |
3162 | strcmp((const char *) time_us_node->name, | |
3163 | config_element_rotation_schedule_periodic_time_us)) { | |
3164 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3165 | goto end; | |
3166 | } | |
3167 | ||
3168 | /* time_us child */ | |
3169 | content = xmlNodeGetContent(time_us_node); | |
3170 | if (!content) { | |
3171 | ret = -LTTNG_ERR_NOMEM; | |
3172 | goto end; | |
3173 | } | |
3174 | ret = parse_uint(content, rotation_timer_interval); | |
3175 | free(content); | |
3176 | if (ret) { | |
3177 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3178 | goto end; | |
3179 | } | |
3180 | } else if (!strcmp((const char *) child->name, | |
3181 | config_element_rotation_schedule_size_threshold)) { | |
3182 | xmlChar *content; | |
3183 | xmlNodePtr bytes_node; | |
3184 | ||
3185 | /* size_threshold rotation schedule */ | |
3186 | bytes_node = xmlFirstElementChild(child); | |
3187 | if (!bytes_node || | |
3188 | strcmp((const char *) bytes_node->name, | |
3189 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3190 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3191 | goto end; | |
3192 | } | |
3193 | ||
3194 | /* bytes child */ | |
3195 | content = xmlNodeGetContent(bytes_node); | |
3196 | if (!content) { | |
3197 | ret = -LTTNG_ERR_NOMEM; | |
3198 | goto end; | |
3199 | } | |
3200 | ret = parse_uint(content, rotation_size); | |
3201 | free(content); | |
3202 | if (ret) { | |
3203 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3204 | goto end; | |
3205 | } | |
3206 | } | |
3207 | } | |
3208 | ||
3209 | end: | |
3210 | return ret; | |
3211 | } | |
3212 | ||
dcf266c0 JG |
3213 | static |
3214 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3215 | int overwrite, |
3216 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3217 | { |
3218 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3219 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3220 | rotation_timer_interval = 0, |
3221 | rotation_size = 0; | |
d324faf7 | 3222 | xmlChar *name = NULL; |
9e7c9f56 | 3223 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3224 | xmlNodePtr domains_node = NULL; |
3225 | xmlNodePtr output_node = NULL; | |
3226 | xmlNodePtr node; | |
90936dcf | 3227 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3228 | struct lttng_domain *kernel_domain = NULL; |
3229 | struct lttng_domain *ust_domain = NULL; | |
3230 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3231 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3232 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3233 | |
3234 | for (node = xmlFirstElementChild(session_node); node; | |
3235 | node = xmlNextElementSibling(node)) { | |
3236 | if (!name && !strcmp((const char *) node->name, | |
3237 | config_element_name)) { | |
3238 | /* name */ | |
3239 | xmlChar *node_content = xmlNodeGetContent(node); | |
3240 | if (!node_content) { | |
3241 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3242 | goto error; |
dcf266c0 JG |
3243 | } |
3244 | ||
d324faf7 | 3245 | name = node_content; |
dcf266c0 JG |
3246 | } else if (!domains_node && !strcmp((const char *) node->name, |
3247 | config_element_domains)) { | |
3248 | /* domains */ | |
3249 | domains_node = node; | |
3250 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3251 | config_element_started)) { | |
3252 | /* started */ | |
3253 | xmlChar *node_content = xmlNodeGetContent(node); | |
3254 | if (!node_content) { | |
3255 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3256 | goto error; |
dcf266c0 JG |
3257 | } |
3258 | ||
3259 | ret = parse_bool(node_content, &started); | |
3260 | free(node_content); | |
3261 | if (ret) { | |
3262 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3263 | goto error; |
dcf266c0 JG |
3264 | } |
3265 | } else if (!output_node && !strcmp((const char *) node->name, | |
3266 | config_element_output)) { | |
3267 | /* output */ | |
3268 | output_node = node; | |
9e7c9f56 JR |
3269 | } else if (!shm_path && !strcmp((const char *) node->name, |
3270 | config_element_shared_memory_path)) { | |
3271 | /* shared memory path */ | |
3272 | xmlChar *node_content = xmlNodeGetContent(node); | |
3273 | if (!node_content) { | |
3274 | ret = -LTTNG_ERR_NOMEM; | |
3275 | goto error; | |
3276 | } | |
3277 | ||
3278 | shm_path = node_content; | |
dcf266c0 | 3279 | } else { |
259c2674 JD |
3280 | /* |
3281 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3282 | * rotation_timer_interval. |
3283 | */ | |
3284 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3285 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3286 | if (!strcmp((const char *) attributes_child->name, | |
3287 | config_element_snapshot_mode)) { | |
3288 | /* snapshot_mode */ | |
3289 | xmlChar *snapshot_mode_content = | |
3290 | xmlNodeGetContent(attributes_child); | |
3291 | if (!snapshot_mode_content) { | |
3292 | ret = -LTTNG_ERR_NOMEM; | |
3293 | goto error; | |
3294 | } | |
dcf266c0 | 3295 | |
90936dcf JD |
3296 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3297 | free(snapshot_mode_content); | |
3298 | if (ret) { | |
3299 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3300 | goto error; | |
3301 | } | |
3302 | } else if (!strcmp((const char *) attributes_child->name, | |
3303 | config_element_live_timer_interval)) { | |
3304 | /* live_timer_interval */ | |
3305 | xmlChar *timer_interval_content = | |
3306 | xmlNodeGetContent(attributes_child); | |
3307 | if (!timer_interval_content) { | |
3308 | ret = -LTTNG_ERR_NOMEM; | |
3309 | goto error; | |
3310 | } | |
dcf266c0 | 3311 | |
90936dcf JD |
3312 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3313 | free(timer_interval_content); | |
3314 | if (ret) { | |
3315 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3316 | goto error; | |
3317 | } | |
ce6176f2 JG |
3318 | } else if (!strcmp((const char *) attributes_child->name, |
3319 | config_element_rotation_schedules)) { | |
3320 | ret = process_session_rotation_schedules_node( | |
3321 | attributes_child, | |
3322 | &rotation_timer_interval, | |
3323 | &rotation_size); | |
90936dcf JD |
3324 | if (ret) { |
3325 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3326 | goto error; | |
3327 | } | |
259c2674 | 3328 | |
259c2674 JD |
3329 | } |
3330 | } | |
dcf266c0 JG |
3331 | } |
3332 | } | |
3333 | ||
3334 | if (!name) { | |
3335 | /* Mandatory attribute, as defined in the session XSD */ | |
3336 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3337 | goto error; |
dcf266c0 JG |
3338 | } |
3339 | ||
d324faf7 | 3340 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3341 | /* This is not the session we are looking for */ |
c2da8cde DG |
3342 | ret = -LTTNG_ERR_NO_SESSION; |
3343 | goto error; | |
dcf266c0 JG |
3344 | } |
3345 | ||
3346 | /* Init domains to create the session handles */ | |
3347 | for (node = xmlFirstElementChild(domains_node); node; | |
3348 | node = xmlNextElementSibling(node)) { | |
3349 | struct lttng_domain *domain; | |
3350 | ||
3351 | domain = zmalloc(sizeof(*domain)); | |
3352 | if (!domain) { | |
3353 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3354 | goto error; |
dcf266c0 JG |
3355 | } |
3356 | ||
3357 | ret = init_domain(node, domain); | |
3358 | if (ret) { | |
3359 | goto domain_init_error; | |
3360 | } | |
3361 | ||
3362 | switch (domain->type) { | |
3363 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3364 | if (kernel_domain) { |
3365 | /* Same domain seen twice, invalid! */ | |
3366 | goto domain_init_error; | |
3367 | } | |
dcf266c0 JG |
3368 | kernel_domain = domain; |
3369 | break; | |
3370 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3371 | if (ust_domain) { |
3372 | /* Same domain seen twice, invalid! */ | |
3373 | goto domain_init_error; | |
3374 | } | |
dcf266c0 JG |
3375 | ust_domain = domain; |
3376 | break; | |
3377 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3378 | if (jul_domain) { |
3379 | /* Same domain seen twice, invalid! */ | |
3380 | goto domain_init_error; | |
3381 | } | |
dcf266c0 JG |
3382 | jul_domain = domain; |
3383 | break; | |
5cdb6027 DG |
3384 | case LTTNG_DOMAIN_LOG4J: |
3385 | if (log4j_domain) { | |
3386 | /* Same domain seen twice, invalid! */ | |
3387 | goto domain_init_error; | |
3388 | } | |
3389 | log4j_domain = domain; | |
3390 | break; | |
0e115563 DG |
3391 | case LTTNG_DOMAIN_PYTHON: |
3392 | if (python_domain) { | |
3393 | /* Same domain seen twice, invalid! */ | |
3394 | goto domain_init_error; | |
3395 | } | |
3396 | python_domain = domain; | |
3397 | break; | |
dcf266c0 JG |
3398 | default: |
3399 | WARN("Invalid domain type"); | |
3400 | goto domain_init_error; | |
3401 | } | |
3402 | continue; | |
3403 | domain_init_error: | |
3404 | free(domain); | |
3405 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3406 | goto error; |
dcf266c0 JG |
3407 | } |
3408 | ||
2aaf5fc7 JR |
3409 | /* Apply overrides */ |
3410 | if (overrides) { | |
3411 | if (overrides->session_name) { | |
3412 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3413 | if (!name_override) { | |
3414 | ret = -LTTNG_ERR_NOMEM; | |
3415 | goto error; | |
3416 | } | |
3417 | ||
3418 | /* Overrides the session name to the provided name */ | |
3419 | xmlFree(name); | |
3420 | name = name_override; | |
3421 | } | |
3422 | } | |
3423 | ||
40b4155f | 3424 | if (overwrite) { |
dcf266c0 | 3425 | /* Destroy session if it exists */ |
d324faf7 | 3426 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3427 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3428 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3429 | goto error; |
dcf266c0 JG |
3430 | } |
3431 | } | |
3432 | ||
3433 | /* Create session type depending on output type */ | |
3434 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3435 | ret = create_snapshot_session((const char *) name, output_node, |
3436 | overrides); | |
dcf266c0 JG |
3437 | } else if (live_timer_interval && |
3438 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3439 | ret = create_session((const char *) name, |
1b08cbce | 3440 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3441 | } else { |
3442 | /* regular session */ | |
194dfca0 | 3443 | ret = create_session((const char *) name, |
1b08cbce | 3444 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3445 | } |
dcf266c0 | 3446 | if (ret) { |
c2da8cde | 3447 | goto error; |
dcf266c0 JG |
3448 | } |
3449 | ||
9e7c9f56 JR |
3450 | if (shm_path) { |
3451 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3452 | (const char *) shm_path); |
9e7c9f56 JR |
3453 | if (ret) { |
3454 | goto error; | |
3455 | } | |
3456 | } | |
3457 | ||
dcf266c0 JG |
3458 | for (node = xmlFirstElementChild(domains_node); node; |
3459 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3460 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3461 | if (ret) { |
3462 | goto end; | |
3463 | } | |
3464 | } | |
3465 | ||
66ea93b1 JG |
3466 | if (rotation_timer_interval) { |
3467 | ret = add_periodic_rotation((const char *) name, | |
3468 | rotation_timer_interval); | |
3469 | if (ret < 0) { | |
259c2674 JD |
3470 | goto error; |
3471 | } | |
66ea93b1 JG |
3472 | } |
3473 | if (rotation_size) { | |
3474 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3475 | rotation_size); |
66ea93b1 | 3476 | if (ret < 0) { |
259c2674 JD |
3477 | goto error; |
3478 | } | |
3479 | } | |
3480 | ||
dcf266c0 | 3481 | if (started) { |
d324faf7 | 3482 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3483 | if (ret) { |
3484 | goto end; | |
3485 | } | |
3486 | } | |
c2da8cde | 3487 | |
dcf266c0 | 3488 | end: |
b2579dc1 | 3489 | if (ret < 0) { |
d324faf7 JG |
3490 | ERR("Failed to load session %s: %s", (const char *) name, |
3491 | lttng_strerror(ret)); | |
3492 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3493 | } |
3494 | ||
c2da8cde | 3495 | error: |
dcf266c0 JG |
3496 | free(kernel_domain); |
3497 | free(ust_domain); | |
3498 | free(jul_domain); | |
5cdb6027 | 3499 | free(log4j_domain); |
135a3893 | 3500 | free(python_domain); |
d324faf7 | 3501 | xmlFree(name); |
9e7c9f56 | 3502 | xmlFree(shm_path); |
dcf266c0 JG |
3503 | return ret; |
3504 | } | |
3505 | ||
cf53c06d DG |
3506 | /* |
3507 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3508 | * Return -1 if the path is EPERM. | |
3509 | */ | |
3510 | static int validate_file_read_creds(const char *path) | |
3511 | { | |
3512 | int ret; | |
3513 | ||
3514 | assert(path); | |
3515 | ||
3516 | /* Can we read the file. */ | |
3517 | ret = access(path, R_OK); | |
3518 | if (!ret) { | |
3519 | goto valid; | |
3520 | } | |
3521 | if (errno == EACCES) { | |
3522 | return -1; | |
3523 | } else { | |
3524 | /* Invalid. */ | |
3525 | return 0; | |
3526 | } | |
3527 | valid: | |
3528 | return 1; | |
3529 | } | |
3530 | ||
dcf266c0 JG |
3531 | static |
3532 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3533 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3534 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3535 | { |
3536 | int ret, session_found = !session_name; | |
3537 | xmlDocPtr doc = NULL; | |
3538 | xmlNodePtr sessions_node; | |
3539 | xmlNodePtr session_node; | |
dcf266c0 JG |
3540 | |
3541 | assert(path); | |
3542 | assert(validation_ctx); | |
3543 | ||
cf53c06d DG |
3544 | ret = validate_file_read_creds(path); |
3545 | if (ret != 1) { | |
3546 | if (ret == -1) { | |
3547 | ret = -LTTNG_ERR_EPERM; | |
3548 | } else { | |
3549 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3550 | } | |
dcf266c0 JG |
3551 | goto end; |
3552 | } | |
3553 | ||
3554 | doc = xmlParseFile(path); | |
3555 | if (!doc) { | |
3556 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3557 | goto end; | |
3558 | } | |
3559 | ||
3560 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3561 | if (ret) { | |
3562 | ERR("Session configuration file validation failed"); | |
3563 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3564 | goto end; | |
3565 | } | |
3566 | ||
3567 | sessions_node = xmlDocGetRootElement(doc); | |
3568 | if (!sessions_node) { | |
55c9e7ca | 3569 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3570 | goto end; |
3571 | } | |
3572 | ||
3573 | for (session_node = xmlFirstElementChild(sessions_node); | |
3574 | session_node; session_node = | |
3575 | xmlNextElementSibling(session_node)) { | |
3576 | ret = process_session_node(session_node, | |
1b08cbce | 3577 | session_name, overwrite, overrides); |
dcf266c0 JG |
3578 | if (session_name && ret == 0) { |
3579 | /* Target session found and loaded */ | |
3580 | session_found = 1; | |
3581 | break; | |
3582 | } | |
3583 | } | |
3584 | end: | |
3585 | xmlFreeDoc(doc); | |
3586 | if (!ret) { | |
a96bc65d | 3587 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 | 3588 | } |
55c9e7ca JR |
3589 | if (ret == -LTTNG_ERR_NO_SESSION) { |
3590 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3591 | } | |
dcf266c0 JG |
3592 | return ret; |
3593 | } | |
3594 | ||
3595 | static | |
3596 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3597 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3598 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3599 | { |
3600 | int ret, session_found = !session_name; | |
dcf266c0 | 3601 | DIR *directory = NULL; |
cce35f91 JG |
3602 | struct lttng_dynamic_buffer file_path; |
3603 | size_t path_len; | |
dcf266c0 JG |
3604 | |
3605 | assert(path); | |
3606 | assert(validation_ctx); | |
cce35f91 JG |
3607 | path_len = strlen(path); |
3608 | lttng_dynamic_buffer_init(&file_path); | |
3609 | if (path_len >= LTTNG_PATH_MAX) { | |
3610 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3611 | path, path_len, LTTNG_PATH_MAX); | |
3612 | ret = -LTTNG_ERR_INVALID; | |
3613 | goto end; | |
3614 | } | |
dcf266c0 | 3615 | |
4af16958 DG |
3616 | directory = opendir(path); |
3617 | if (!directory) { | |
11143783 DG |
3618 | switch (errno) { |
3619 | case ENOTDIR: | |
0f0a81b5 DG |
3620 | /* Try the file loading. */ |
3621 | break; | |
11143783 DG |
3622 | case ENOENT: |
3623 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3624 | goto end; | |
3625 | default: | |
0f0a81b5 DG |
3626 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3627 | goto end; | |
4af16958 | 3628 | } |
dcf266c0 | 3629 | } |
4af16958 | 3630 | if (directory) { |
cce35f91 | 3631 | size_t file_path_root_len; |
dcf266c0 | 3632 | |
cce35f91 JG |
3633 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3634 | LTTNG_PATH_MAX); | |
3635 | if (ret) { | |
3636 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3637 | goto end; |
3638 | } | |
3639 | ||
cce35f91 JG |
3640 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3641 | if (ret) { | |
dcf266c0 | 3642 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3643 | goto end; |
3644 | } | |
3645 | ||
cce35f91 JG |
3646 | if (file_path.data[file_path.size - 1] != '/') { |
3647 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3648 | if (ret) { | |
3649 | ret = -LTTNG_ERR_NOMEM; | |
3650 | goto end; | |
3651 | } | |
dcf266c0 | 3652 | } |
cce35f91 | 3653 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3654 | |
3655 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3656 | for (;;) { |
3657 | size_t file_name_len; | |
3658 | struct dirent *result; | |
3659 | ||
3660 | /* | |
3661 | * When the end of the directory stream is reached, NULL | |
3662 | * is returned and errno is kept unchanged. When an | |
3663 | * error occurs, NULL is returned and errno is set | |
3664 | * accordingly. To distinguish between the two, set | |
3665 | * errno to zero before calling readdir(). | |
3666 | * | |
3667 | * On success, readdir() returns a pointer to a dirent | |
3668 | * structure. This structure may be statically | |
3669 | * allocated, do not attempt to free(3) it. | |
3670 | */ | |
3671 | errno = 0; | |
3672 | result = readdir(directory); | |
3673 | ||
ff86d8d0 | 3674 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3675 | if (!result) { |
3676 | if (errno) { | |
3677 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3678 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3679 | goto end; | |
3680 | } | |
3681 | break; | |
3682 | } | |
3683 | ||
3684 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3685 | |
3686 | if (file_name_len <= | |
3687 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3688 | continue; | |
3689 | } | |
3690 | ||
cce35f91 JG |
3691 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3692 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3693 | result->d_name, | |
3694 | /* +1 to account for NULL terminator. */ | |
3695 | file_path.size + file_name_len + 1, | |
3696 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3697 | continue; |
3698 | } | |
3699 | ||
cce35f91 | 3700 | /* Does the file end with .lttng? */ |
dcf266c0 | 3701 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3702 | result->d_name + file_name_len - sizeof( |
3703 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3704 | continue; |
3705 | } | |
3706 | ||
cce35f91 JG |
3707 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3708 | file_name_len + 1); | |
3709 | if (ret) { | |
3710 | ret = -LTTNG_ERR_NOMEM; | |
3711 | goto end; | |
3712 | } | |
dcf266c0 | 3713 | |
cce35f91 | 3714 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3715 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3716 | if (session_name && |
3717 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3718 | session_found = 1; |
3719 | break; | |
3720 | } | |
55c9e7ca JR |
3721 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3722 | goto end; | |
3723 | } | |
cce35f91 JG |
3724 | /* |
3725 | * Reset the buffer's size to the location of the | |
3726 | * path's trailing '/'. | |
3727 | */ | |
3728 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3729 | file_path_root_len); | |
3730 | if (ret) { | |
3731 | ret = -LTTNG_ERR_UNK; | |
3732 | goto end; | |
3733 | } | |
dcf266c0 | 3734 | } |
dcf266c0 JG |
3735 | } else { |
3736 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3737 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3738 | if (ret) { |
3739 | goto end; | |
dcf266c0 | 3740 | } |
55c9e7ca | 3741 | session_found = 1; |
dcf266c0 JG |
3742 | } |
3743 | ||
55c9e7ca | 3744 | ret = 0; |
dcf266c0 JG |
3745 | end: |
3746 | if (directory) { | |
3747 | if (closedir(directory)) { | |
3748 | PERROR("closedir"); | |
3749 | } | |
3750 | } | |
55c9e7ca JR |
3751 | if (!ret && !session_found) { |
3752 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3753 | } |
cce35f91 | 3754 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3755 | return ret; |
3756 | } | |
3757 | ||
ab38c13f DG |
3758 | /* |
3759 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3760 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3761 | */ |
3762 | static int validate_path_creds(const char *path) | |
3763 | { | |
3764 | int ret, uid = getuid(); | |
3765 | struct stat buf; | |
3766 | ||
3767 | assert(path); | |
3768 | ||
cf53c06d | 3769 | if (uid == 0) { |
ab38c13f DG |
3770 | goto valid; |
3771 | } | |
3772 | ||
3773 | ret = stat(path, &buf); | |
3774 | if (ret < 0) { | |
3775 | if (errno != ENOENT) { | |
3776 | PERROR("stat"); | |
3777 | } | |
ab38c13f DG |
3778 | goto valid; |
3779 | } | |
3780 | ||
3781 | if (buf.st_uid != uid) { | |
3782 | goto invalid; | |
3783 | } | |
3784 | ||
3785 | valid: | |
ab38c13f | 3786 | return 1; |
cf53c06d DG |
3787 | invalid: |
3788 | return 0; | |
ab38c13f DG |
3789 | } |
3790 | ||
dcf266c0 JG |
3791 | LTTNG_HIDDEN |
3792 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
3793 | int overwrite, unsigned int autoload, |
3794 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3795 | { |
3796 | int ret; | |
6c66fa0f | 3797 | bool session_loaded = false; |
cf53c06d | 3798 | const char *path_ptr = NULL; |
dcf266c0 JG |
3799 | struct session_config_validation_ctx validation_ctx = { 0 }; |
3800 | ||
3801 | ret = init_session_config_validation_ctx(&validation_ctx); | |
3802 | if (ret) { | |
3803 | goto end; | |
3804 | } | |
3805 | ||
3806 | if (!path) { | |
4f00620d | 3807 | const char *home_path; |
ab38c13f DG |
3808 | const char *sys_path; |
3809 | ||
dcf266c0 | 3810 | /* Try home path */ |
ab38c13f | 3811 | home_path = utils_get_home_dir(); |
dcf266c0 | 3812 | if (home_path) { |
ab38c13f | 3813 | char path[PATH_MAX]; |
dcf266c0 | 3814 | |
d4fcf703 DG |
3815 | /* |
3816 | * Try user session configuration path. Ignore error here so we can | |
3817 | * continue loading the system wide sessions. | |
3818 | */ | |
ab38c13f DG |
3819 | if (autoload) { |
3820 | ret = snprintf(path, sizeof(path), | |
3821 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
3822 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
3823 | if (ret < 0) { |
3824 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 3825 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3826 | goto end; |
3827 | } | |
3828 | ||
3829 | /* | |
3830 | * Credentials are only validated for the autoload in order to | |
3831 | * avoid any user session daemon to try to load kernel sessions | |
3832 | * automatically and failing all the times. | |
3833 | */ | |
3834 | ret = validate_path_creds(path); | |
3835 | if (ret) { | |
3836 | path_ptr = path; | |
3837 | } | |
ab38c13f DG |
3838 | } else { |
3839 | ret = snprintf(path, sizeof(path), | |
3840 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
3841 | if (ret < 0) { |
3842 | PERROR("snprintf session home config path"); | |
55c9e7ca | 3843 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
3844 | goto end; |
3845 | } | |
3846 | path_ptr = path; | |
ab38c13f | 3847 | } |
cf53c06d DG |
3848 | if (path_ptr) { |
3849 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3850 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
3851 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3852 | goto end; | |
3853 | } | |
3854 | /* | |
3855 | * Continue even if the session was found since we have to try | |
3856 | * the system wide sessions. | |
3857 | */ | |
6c66fa0f | 3858 | session_loaded = true; |
ab38c13f | 3859 | } |
d4fcf703 | 3860 | } |
ab38c13f | 3861 | |
cf53c06d DG |
3862 | /* Reset path pointer for the system wide dir. */ |
3863 | path_ptr = NULL; | |
3864 | ||
d4fcf703 DG |
3865 | /* Try system wide configuration directory. */ |
3866 | if (autoload) { | |
3867 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
3868 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
3869 | ret = validate_path_creds(sys_path); |
3870 | if (ret) { | |
3871 | path_ptr = sys_path; | |
3872 | } | |
d4fcf703 | 3873 | } else { |
cf53c06d DG |
3874 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
3875 | path_ptr = sys_path; | |
d4fcf703 DG |
3876 | } |
3877 | ||
cf53c06d DG |
3878 | if (path_ptr) { |
3879 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 3880 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
3881 | if (!ret) { |
3882 | session_loaded = true; | |
3883 | } | |
55c9e7ca JR |
3884 | } else { |
3885 | ret = 0; | |
dcf266c0 JG |
3886 | } |
3887 | } else { | |
3888 | ret = access(path, F_OK); | |
3889 | if (ret < 0) { | |
3890 | PERROR("access"); | |
3891 | switch (errno) { | |
3892 | case ENOENT: | |
3893 | ret = -LTTNG_ERR_INVALID; | |
3894 | WARN("Session configuration path does not exist."); | |
3895 | break; | |
3896 | case EACCES: | |
3897 | ret = -LTTNG_ERR_EPERM; | |
3898 | break; | |
3899 | default: | |
3900 | ret = -LTTNG_ERR_UNK; | |
3901 | break; | |
3902 | } | |
3903 | goto end; | |
3904 | } | |
3905 | ||
3906 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 3907 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3908 | } |
3909 | end: | |
3910 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
3911 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
3912 | /* | |
3913 | * Don't report an error if no sessions are found when called | |
3914 | * without a session_name or a search path. | |
3915 | */ | |
3916 | ret = 0; | |
3917 | } | |
6c66fa0f JG |
3918 | |
3919 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
3920 | /* A matching session was found in one of the search paths. */ | |
3921 | ret = 0; | |
3922 | } | |
dcf266c0 JG |
3923 | return ret; |
3924 | } | |
56766c75 JG |
3925 | |
3926 | static | |
3927 | void __attribute__((destructor)) session_config_exit(void) | |
3928 | { | |
3929 | xmlCleanupParser(); | |
3930 | } |