Commit | Line | Data |
---|---|---|
1501a7f3 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1501a7f3 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
1501a7f3 | 5 | * |
1501a7f3 JG |
6 | */ |
7 | ||
159b042f | 8 | #include "lttng/tracker.h" |
6c1c0768 | 9 | #define _LGPL_SOURCE |
1501a7f3 | 10 | #include <assert.h> |
1501a7f3 | 11 | #include <ctype.h> |
1501a7f3 JG |
12 | #include <stdio.h> |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
36f2332b | 15 | #include <inttypes.h> |
dcf266c0 JG |
16 | #include <dirent.h> |
17 | #include <unistd.h> | |
18 | #include <sys/types.h> | |
19 | #include <sys/stat.h> | |
6c66fa0f | 20 | #include <stdbool.h> |
1501a7f3 JG |
21 | |
22 | #include <common/defaults.h> | |
23 | #include <common/error.h> | |
24 | #include <common/macros.h> | |
25 | #include <common/utils.h> | |
cce35f91 | 26 | #include <common/dynamic-buffer.h> |
e8fa9fb0 | 27 | #include <common/compat/getenv.h> |
fb198a11 JG |
28 | #include <lttng/lttng-error.h> |
29 | #include <libxml/parser.h> | |
30 | #include <libxml/valid.h> | |
31 | #include <libxml/xmlschemas.h> | |
dcf266c0 JG |
32 | #include <libxml/tree.h> |
33 | #include <lttng/lttng.h> | |
34 | #include <lttng/snapshot.h> | |
259c2674 | 35 | #include <lttng/rotation.h> |
c1e83fb4 | 36 | #include <lttng/userspace-probe.h> |
1501a7f3 | 37 | |
f40ef1d5 | 38 | #include "session-config.h" |
36f2332b | 39 | #include "config-internal.h" |
1501a7f3 | 40 | |
c1e83fb4 FD |
41 | #define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7 |
42 | ||
1501a7f3 JG |
43 | struct handler_filter_args { |
44 | const char* section; | |
45 | config_entry_handler_cb handler; | |
46 | void *user_data; | |
47 | }; | |
48 | ||
dcf266c0 JG |
49 | struct session_config_validation_ctx { |
50 | xmlSchemaParserCtxtPtr parser_ctx; | |
51 | xmlSchemaPtr schema; | |
52 | xmlSchemaValidCtxtPtr schema_validation_ctx; | |
53 | }; | |
54 | ||
72c2e2e1 | 55 | LTTNG_HIDDEN const char * const config_element_all = "all"; |
1501a7f3 JG |
56 | const char * const config_str_yes = "yes"; |
57 | const char * const config_str_true = "true"; | |
58 | const char * const config_str_on = "on"; | |
59 | const char * const config_str_no = "no"; | |
60 | const char * const config_str_false = "false"; | |
61 | const char * const config_str_off = "off"; | |
36f2332b | 62 | const char * const config_xml_encoding = "UTF-8"; |
fb198a11 | 63 | const size_t config_xml_encoding_bytes_per_char = 2; /* Size of the encoding's largest character */ |
36f2332b JG |
64 | const char * const config_xml_indent_string = "\t"; |
65 | const char * const config_xml_true = "true"; | |
66 | const char * const config_xml_false = "false"; | |
1501a7f3 | 67 | |
fb198a11 JG |
68 | const char * const config_element_channel = "channel"; |
69 | const char * const config_element_channels = "channels"; | |
70 | const char * const config_element_domain = "domain"; | |
71 | const char * const config_element_domains = "domains"; | |
72 | const char * const config_element_event = "event"; | |
73 | const char * const config_element_events = "events"; | |
74 | const char * const config_element_context = "context"; | |
75 | const char * const config_element_contexts = "contexts"; | |
76 | const char * const config_element_attributes = "attributes"; | |
77 | const char * const config_element_exclusion = "exclusion"; | |
78 | const char * const config_element_exclusions = "exclusions"; | |
79 | const char * const config_element_function_attributes = "function_attributes"; | |
80 | const char * const config_element_probe_attributes = "probe_attributes"; | |
81 | const char * const config_element_symbol_name = "symbol_name"; | |
82 | const char * const config_element_address = "address"; | |
83 | const char * const config_element_offset = "offset"; | |
c1e83fb4 | 84 | |
d0687332 JG |
85 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method"; |
86 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT"; | |
87 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF"; | |
88 | LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT"; | |
89 | LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path"; | |
90 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes"; | |
91 | LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name"; | |
92 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes"; | |
93 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name"; | |
94 | LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name"; | |
c1e83fb4 | 95 | |
fb198a11 JG |
96 | const char * const config_element_name = "name"; |
97 | const char * const config_element_enabled = "enabled"; | |
98 | const char * const config_element_overwrite_mode = "overwrite_mode"; | |
99 | const char * const config_element_subbuf_size = "subbuffer_size"; | |
100 | const char * const config_element_num_subbuf = "subbuffer_count"; | |
101 | const char * const config_element_switch_timer_interval = "switch_timer_interval"; | |
102 | const char * const config_element_read_timer_interval = "read_timer_interval"; | |
6ab3e98b JG |
103 | LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval"; |
104 | LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout"; | |
fb198a11 JG |
105 | const char * const config_element_output = "output"; |
106 | const char * const config_element_output_type = "output_type"; | |
107 | const char * const config_element_tracefile_size = "tracefile_size"; | |
108 | const char * const config_element_tracefile_count = "tracefile_count"; | |
109 | const char * const config_element_live_timer_interval = "live_timer_interval"; | |
ec2ed7da JG |
110 | LTTNG_HIDDEN const char * const config_element_discarded_events = "discarded_events"; |
111 | LTTNG_HIDDEN const char * const config_element_lost_packets = "lost_packets"; | |
fb198a11 JG |
112 | const char * const config_element_type = "type"; |
113 | const char * const config_element_buffer_type = "buffer_type"; | |
114 | const char * const config_element_session = "session"; | |
115 | const char * const config_element_sessions = "sessions"; | |
ec2ed7da JG |
116 | LTTNG_HIDDEN const char * const config_element_context_perf = "perf"; |
117 | LTTNG_HIDDEN const char * const config_element_context_app = "app"; | |
118 | LTTNG_HIDDEN const char * const config_element_context_app_provider_name = "provider_name"; | |
119 | LTTNG_HIDDEN const char * const config_element_context_app_ctx_name = "ctx_name"; | |
fb198a11 JG |
120 | const char * const config_element_config = "config"; |
121 | const char * const config_element_started = "started"; | |
122 | const char * const config_element_snapshot_mode = "snapshot_mode"; | |
123 | const char * const config_element_loglevel = "loglevel"; | |
124 | const char * const config_element_loglevel_type = "loglevel_type"; | |
125 | const char * const config_element_filter = "filter"; | |
ec2ed7da | 126 | LTTNG_HIDDEN const char * const config_element_filter_expression = "filter_expression"; |
fb198a11 JG |
127 | const char * const config_element_snapshot_outputs = "snapshot_outputs"; |
128 | const char * const config_element_consumer_output = "consumer_output"; | |
129 | const char * const config_element_destination = "destination"; | |
130 | const char * const config_element_path = "path"; | |
131 | const char * const config_element_net_output = "net_output"; | |
132 | const char * const config_element_control_uri = "control_uri"; | |
133 | const char * const config_element_data_uri = "data_uri"; | |
134 | const char * const config_element_max_size = "max_size"; | |
ccf10263 MD |
135 | const char * const config_element_pid = "pid"; |
136 | const char * const config_element_pids = "pids"; | |
9e7c9f56 | 137 | const char * const config_element_shared_memory_path = "shared_memory_path"; |
159b042f JG |
138 | |
139 | LTTNG_HIDDEN const char * const config_element_process_attr_id = "id"; | |
140 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_pid = "pid_process_attr_tracker"; | |
141 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vpid = "vpid_process_attr_tracker"; | |
142 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_uid = "uid_process_attr_tracker"; | |
143 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vuid = "vuid_process_attr_tracker"; | |
144 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_gid = "gid_process_attr_tracker"; | |
145 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_vgid = "vgid_process_attr_tracker"; | |
146 | LTTNG_HIDDEN const char * const config_element_process_attr_trackers = "process_attr_trackers"; | |
147 | LTTNG_HIDDEN const char * const config_element_process_attr_values = "process_attr_values"; | |
148 | LTTNG_HIDDEN const char * const config_element_process_attr_value_type = "process_attr_value_type"; | |
149 | LTTNG_HIDDEN const char * const config_element_process_attr_pid_value = "pid"; | |
150 | LTTNG_HIDDEN const char * const config_element_process_attr_vpid_value = "vpid"; | |
151 | LTTNG_HIDDEN const char * const config_element_process_attr_uid_value = "uid"; | |
152 | LTTNG_HIDDEN const char * const config_element_process_attr_vuid_value = "vuid"; | |
153 | LTTNG_HIDDEN const char * const config_element_process_attr_gid_value = "gid"; | |
154 | LTTNG_HIDDEN const char * const config_element_process_attr_vgid_value = "vgid"; | |
155 | LTTNG_HIDDEN const char * const config_element_process_attr_tracker_type = "process_attr_tracker_type"; | |
fb198a11 | 156 | |
f7af9a72 JG |
157 | /* Used for support of legacy tracker serialization (< 2.12). */ |
158 | LTTNG_HIDDEN const char * const config_element_trackers_legacy = "trackers"; | |
159 | LTTNG_HIDDEN const char * const config_element_pid_tracker_legacy = "pid_tracker"; | |
160 | LTTNG_HIDDEN const char * const config_element_tracker_targets_legacy = "targets"; | |
161 | LTTNG_HIDDEN const char * const config_element_tracker_pid_target_legacy = "pid_target"; | |
162 | LTTNG_HIDDEN const char * const config_element_tracker_pid_legacy = "pid"; | |
163 | ||
ce6176f2 JG |
164 | LTTNG_HIDDEN const char * const config_element_rotation_schedules = "rotation_schedules"; |
165 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic = "periodic"; | |
166 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_periodic_time_us = "time_us"; | |
167 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold = "size_threshold"; | |
168 | LTTNG_HIDDEN const char * const config_element_rotation_schedule_size_threshold_bytes = "bytes"; | |
259c2674 | 169 | |
fb198a11 JG |
170 | const char * const config_domain_type_kernel = "KERNEL"; |
171 | const char * const config_domain_type_ust = "UST"; | |
172 | const char * const config_domain_type_jul = "JUL"; | |
5cdb6027 | 173 | const char * const config_domain_type_log4j = "LOG4J"; |
0e115563 | 174 | const char * const config_domain_type_python = "PYTHON"; |
fb198a11 JG |
175 | |
176 | const char * const config_buffer_type_per_pid = "PER_PID"; | |
177 | const char * const config_buffer_type_per_uid = "PER_UID"; | |
178 | const char * const config_buffer_type_global = "GLOBAL"; | |
179 | ||
180 | const char * const config_overwrite_mode_discard = "DISCARD"; | |
181 | const char * const config_overwrite_mode_overwrite = "OVERWRITE"; | |
182 | ||
183 | const char * const config_output_type_splice = "SPLICE"; | |
184 | const char * const config_output_type_mmap = "MMAP"; | |
185 | ||
186 | const char * const config_loglevel_type_all = "ALL"; | |
187 | const char * const config_loglevel_type_range = "RANGE"; | |
188 | const char * const config_loglevel_type_single = "SINGLE"; | |
189 | ||
190 | const char * const config_event_type_all = "ALL"; | |
191 | const char * const config_event_type_tracepoint = "TRACEPOINT"; | |
192 | const char * const config_event_type_probe = "PROBE"; | |
a416382b | 193 | LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE"; |
fb198a11 JG |
194 | const char * const config_event_type_function = "FUNCTION"; |
195 | const char * const config_event_type_function_entry = "FUNCTION_ENTRY"; | |
196 | const char * const config_event_type_noop = "NOOP"; | |
197 | const char * const config_event_type_syscall = "SYSCALL"; | |
198 | const char * const config_event_type_kprobe = "KPROBE"; | |
199 | const char * const config_event_type_kretprobe = "KRETPROBE"; | |
200 | ||
201 | const char * const config_event_context_pid = "PID"; | |
202 | const char * const config_event_context_procname = "PROCNAME"; | |
203 | const char * const config_event_context_prio = "PRIO"; | |
204 | const char * const config_event_context_nice = "NICE"; | |
205 | const char * const config_event_context_vpid = "VPID"; | |
206 | const char * const config_event_context_tid = "TID"; | |
207 | const char * const config_event_context_vtid = "VTID"; | |
208 | const char * const config_event_context_ppid = "PPID"; | |
209 | const char * const config_event_context_vppid = "VPPID"; | |
210 | const char * const config_event_context_pthread_id = "PTHREAD_ID"; | |
211 | const char * const config_event_context_hostname = "HOSTNAME"; | |
212 | const char * const config_event_context_ip = "IP"; | |
e885a367 | 213 | const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER"; |
ec2ed7da JG |
214 | LTTNG_HIDDEN const char * const config_event_context_app = "APP"; |
215 | LTTNG_HIDDEN const char * const config_event_context_interruptible = "INTERRUPTIBLE"; | |
216 | LTTNG_HIDDEN const char * const config_event_context_preemptible = "PREEMPTIBLE"; | |
217 | LTTNG_HIDDEN const char * const config_event_context_need_reschedule = "NEED_RESCHEDULE"; | |
218 | LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE"; | |
16c4c991 FD |
219 | LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER"; |
220 | LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL"; | |
40e14884 MJ |
221 | LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS"; |
222 | LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS"; | |
223 | LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS"; | |
224 | LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS"; | |
225 | LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS"; | |
d37ac3cd | 226 | LTTNG_HIDDEN const char * const config_event_context_time_ns = "TIME_NS"; |
40e14884 MJ |
227 | LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS"; |
228 | LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS"; | |
499cbfa1 MJ |
229 | LTTNG_HIDDEN const char * const config_event_context_uid = "UID"; |
230 | LTTNG_HIDDEN const char * const config_event_context_euid = "EUID"; | |
231 | LTTNG_HIDDEN const char * const config_event_context_suid = "SUID"; | |
232 | LTTNG_HIDDEN const char * const config_event_context_gid = "GID"; | |
233 | LTTNG_HIDDEN const char * const config_event_context_egid = "EGID"; | |
234 | LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID"; | |
235 | LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID"; | |
236 | LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID"; | |
237 | LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID"; | |
238 | LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID"; | |
239 | LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID"; | |
240 | LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID"; | |
fb198a11 | 241 | |
fbd987c9 JG |
242 | /* Deprecated symbols */ |
243 | const char * const config_element_perf; | |
244 | ||
d7b645e2 JR |
245 | enum process_event_node_phase { |
246 | CREATION = 0, | |
247 | ENABLE = 1, | |
248 | }; | |
249 | ||
dcf266c0 JG |
250 | struct consumer_output { |
251 | int enabled; | |
252 | char *path; | |
253 | char *control_uri; | |
254 | char *data_uri; | |
255 | }; | |
256 | ||
1501a7f3 JG |
257 | static int config_entry_handler_filter(struct handler_filter_args *args, |
258 | const char *section, const char *name, const char *value) | |
259 | { | |
260 | int ret = 0; | |
261 | struct config_entry entry = { section, name, value }; | |
262 | ||
263 | assert(args); | |
264 | ||
265 | if (!section || !name || !value) { | |
266 | ret = -EIO; | |
267 | goto end; | |
268 | } | |
269 | ||
270 | if (args->section) { | |
271 | if (strcmp(args->section, section)) { | |
272 | goto end; | |
273 | } | |
274 | } | |
275 | ||
276 | ret = args->handler(&entry, args->user_data); | |
277 | end: | |
278 | return ret; | |
279 | } | |
280 | ||
281 | LTTNG_HIDDEN | |
282 | int config_get_section_entries(const char *override_path, const char *section, | |
283 | config_entry_handler_cb handler, void *user_data) | |
284 | { | |
285 | int ret = 0; | |
4f00620d | 286 | const char *path; |
1501a7f3 JG |
287 | FILE *config_file = NULL; |
288 | struct handler_filter_args filter = { section, handler, user_data }; | |
289 | ||
7ab02a27 DG |
290 | /* First, try system-wide conf. file. */ |
291 | path = DEFAULT_DAEMON_SYSTEM_CONFIGPATH; | |
292 | ||
293 | config_file = fopen(path, "r"); | |
294 | if (config_file) { | |
295 | DBG("Loading daemon conf file at %s", path); | |
296 | /* | |
297 | * Return value is not very important here since error or not, we | |
298 | * continue and try the next possible conf. file. | |
299 | */ | |
300 | (void) ini_parse_file(config_file, | |
301 | (ini_entry_handler) config_entry_handler_filter, | |
302 | (void *) &filter); | |
303 | fclose(config_file); | |
304 | } | |
305 | ||
306 | /* Second is the user local configuration. */ | |
307 | path = utils_get_home_dir(); | |
308 | if (path) { | |
309 | char fullpath[PATH_MAX]; | |
310 | ||
311 | ret = snprintf(fullpath, sizeof(fullpath), | |
312 | DEFAULT_DAEMON_HOME_CONFIGPATH, path); | |
313 | if (ret < 0) { | |
314 | PERROR("snprintf user conf. path"); | |
315 | goto error; | |
316 | } | |
317 | ||
318 | config_file = fopen(fullpath, "r"); | |
319 | if (config_file) { | |
320 | DBG("Loading daemon user conf file at %s", path); | |
321 | /* | |
322 | * Return value is not very important here since error or not, we | |
323 | * continue and try the next possible conf. file. | |
324 | */ | |
325 | (void) ini_parse_file(config_file, | |
326 | (ini_entry_handler) config_entry_handler_filter, | |
327 | (void *) &filter); | |
328 | fclose(config_file); | |
329 | } | |
330 | } | |
331 | ||
332 | /* Final path is the one that the user might have provided. */ | |
1501a7f3 JG |
333 | if (override_path) { |
334 | config_file = fopen(override_path, "r"); | |
335 | if (config_file) { | |
7ab02a27 DG |
336 | DBG("Loading daemon command line conf file at %s", override_path); |
337 | (void) ini_parse_file(config_file, | |
338 | (ini_entry_handler) config_entry_handler_filter, | |
339 | (void *) &filter); | |
340 | fclose(config_file); | |
1501a7f3 JG |
341 | } else { |
342 | ERR("Failed to open daemon configuration file at %s", | |
343 | override_path); | |
344 | ret = -ENOENT; | |
7ab02a27 | 345 | goto error; |
1501a7f3 JG |
346 | } |
347 | } | |
348 | ||
7ab02a27 DG |
349 | /* Everything went well. */ |
350 | ret = 0; | |
1501a7f3 | 351 | |
7ab02a27 | 352 | error: |
1501a7f3 JG |
353 | return ret; |
354 | } | |
355 | ||
356 | LTTNG_HIDDEN | |
357 | int config_parse_value(const char *value) | |
358 | { | |
359 | int i, ret = 0; | |
360 | char *endptr, *lower_str; | |
361 | size_t len; | |
362 | unsigned long v; | |
363 | ||
364 | len = strlen(value); | |
365 | if (!len) { | |
366 | ret = -1; | |
367 | goto end; | |
368 | } | |
369 | ||
370 | v = strtoul(value, &endptr, 10); | |
371 | if (endptr != value) { | |
372 | ret = v; | |
373 | goto end; | |
374 | } | |
375 | ||
376 | lower_str = zmalloc(len + 1); | |
377 | if (!lower_str) { | |
378 | PERROR("zmalloc"); | |
379 | ret = -errno; | |
380 | goto end; | |
381 | } | |
382 | ||
383 | for (i = 0; i < len; i++) { | |
384 | lower_str[i] = tolower(value[i]); | |
385 | } | |
386 | ||
387 | if (!strcmp(lower_str, config_str_yes) || | |
388 | !strcmp(lower_str, config_str_true) || | |
389 | !strcmp(lower_str, config_str_on)) { | |
390 | ret = 1; | |
391 | } else if (!strcmp(lower_str, config_str_no) || | |
392 | !strcmp(lower_str, config_str_false) || | |
393 | !strcmp(lower_str, config_str_off)) { | |
394 | ret = 0; | |
395 | } else { | |
396 | ret = -1; | |
397 | } | |
398 | ||
399 | free(lower_str); | |
400 | end: | |
401 | return ret; | |
402 | } | |
36f2332b JG |
403 | |
404 | /* | |
405 | * Returns a xmlChar string which must be released using xmlFree(). | |
406 | */ | |
407 | static xmlChar *encode_string(const char *in_str) | |
408 | { | |
409 | xmlChar *out_str = NULL; | |
410 | xmlCharEncodingHandlerPtr handler; | |
411 | int out_len, ret, in_len; | |
412 | ||
413 | assert(in_str); | |
414 | ||
415 | handler = xmlFindCharEncodingHandler(config_xml_encoding); | |
416 | if (!handler) { | |
417 | ERR("xmlFindCharEncodingHandler return NULL!. Configure issue!"); | |
418 | goto end; | |
419 | } | |
420 | ||
421 | in_len = strlen(in_str); | |
422 | /* | |
f76d886f JG |
423 | * Add 1 byte for the NULL terminted character. The factor 4 here is |
424 | * used because UTF-8 characters can take up to 4 bytes. | |
36f2332b | 425 | */ |
f76d886f | 426 | out_len = (in_len * 4) + 1; |
36f2332b JG |
427 | out_str = xmlMalloc(out_len); |
428 | if (!out_str) { | |
429 | goto end; | |
430 | } | |
431 | ||
432 | ret = handler->input(out_str, &out_len, (const xmlChar *) in_str, &in_len); | |
433 | if (ret < 0) { | |
434 | xmlFree(out_str); | |
435 | out_str = NULL; | |
436 | goto end; | |
437 | } | |
438 | ||
439 | /* out_len is now the size of out_str */ | |
440 | out_str[out_len] = '\0'; | |
441 | end: | |
442 | return out_str; | |
443 | } | |
444 | ||
445 | LTTNG_HIDDEN | |
705bb62f | 446 | struct config_writer *config_writer_create(int fd_output, int indent) |
36f2332b JG |
447 | { |
448 | int ret; | |
449 | struct config_writer *writer; | |
450 | xmlOutputBufferPtr buffer; | |
451 | ||
452 | writer = zmalloc(sizeof(struct config_writer)); | |
453 | if (!writer) { | |
454 | PERROR("zmalloc config_writer_create"); | |
455 | goto end; | |
456 | } | |
457 | ||
458 | buffer = xmlOutputBufferCreateFd(fd_output, NULL); | |
459 | if (!buffer) { | |
460 | goto error_destroy; | |
461 | } | |
462 | ||
463 | writer->writer = xmlNewTextWriter(buffer); | |
464 | ret = xmlTextWriterStartDocument(writer->writer, NULL, | |
465 | config_xml_encoding, NULL); | |
466 | if (ret < 0) { | |
467 | goto error_destroy; | |
468 | } | |
469 | ||
470 | ret = xmlTextWriterSetIndentString(writer->writer, | |
471 | BAD_CAST config_xml_indent_string); | |
705bb62f | 472 | if (ret) { |
36f2332b JG |
473 | goto error_destroy; |
474 | } | |
475 | ||
705bb62f JRJ |
476 | ret = xmlTextWriterSetIndent(writer->writer, indent); |
477 | if (ret) { | |
36f2332b JG |
478 | goto error_destroy; |
479 | } | |
480 | ||
481 | end: | |
482 | return writer; | |
483 | error_destroy: | |
484 | config_writer_destroy(writer); | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | LTTNG_HIDDEN | |
489 | int config_writer_destroy(struct config_writer *writer) | |
490 | { | |
491 | int ret = 0; | |
492 | ||
493 | if (!writer) { | |
494 | ret = -EINVAL; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | if (xmlTextWriterEndDocument(writer->writer) < 0) { | |
499 | WARN("Could not close XML document"); | |
500 | ret = -EIO; | |
501 | } | |
502 | ||
503 | if (writer->writer) { | |
504 | xmlFreeTextWriter(writer->writer); | |
505 | } | |
506 | ||
507 | free(writer); | |
508 | end: | |
509 | return ret; | |
510 | } | |
511 | ||
512 | LTTNG_HIDDEN | |
513 | int config_writer_open_element(struct config_writer *writer, | |
514 | const char *element_name) | |
515 | { | |
516 | int ret; | |
517 | xmlChar *encoded_element_name; | |
518 | ||
519 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
520 | ret = -1; | |
521 | goto end; | |
522 | } | |
523 | ||
524 | encoded_element_name = encode_string(element_name); | |
525 | if (!encoded_element_name) { | |
526 | ret = -1; | |
527 | goto end; | |
528 | } | |
529 | ||
530 | ret = xmlTextWriterStartElement(writer->writer, encoded_element_name); | |
531 | xmlFree(encoded_element_name); | |
532 | end: | |
28676a1d | 533 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
534 | } |
535 | ||
e10b6a1c JG |
536 | LTTNG_HIDDEN |
537 | int config_writer_write_attribute(struct config_writer *writer, | |
538 | const char *name, const char *value) | |
539 | { | |
540 | int ret; | |
541 | xmlChar *encoded_name = NULL; | |
542 | xmlChar *encoded_value = NULL; | |
543 | ||
544 | if (!writer || !writer->writer || !name || !name[0]) { | |
545 | ret = -1; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | encoded_name = encode_string(name); | |
550 | if (!encoded_name) { | |
551 | ret = -1; | |
552 | goto end; | |
553 | } | |
554 | ||
555 | encoded_value = encode_string(value); | |
556 | if (!encoded_value) { | |
557 | ret = -1; | |
558 | goto end; | |
559 | } | |
560 | ||
561 | ret = xmlTextWriterWriteAttribute(writer->writer, encoded_name, | |
562 | encoded_value); | |
563 | end: | |
564 | xmlFree(encoded_name); | |
565 | xmlFree(encoded_value); | |
566 | return ret >= 0 ? 0 : ret; | |
567 | } | |
568 | ||
36f2332b JG |
569 | LTTNG_HIDDEN |
570 | int config_writer_close_element(struct config_writer *writer) | |
571 | { | |
572 | int ret; | |
573 | ||
574 | if (!writer || !writer->writer) { | |
575 | ret = -1; | |
576 | goto end; | |
577 | } | |
578 | ||
579 | ret = xmlTextWriterEndElement(writer->writer); | |
580 | end: | |
28676a1d | 581 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
582 | } |
583 | ||
584 | LTTNG_HIDDEN | |
585 | int config_writer_write_element_unsigned_int(struct config_writer *writer, | |
586 | const char *element_name, uint64_t value) | |
587 | { | |
588 | int ret; | |
589 | xmlChar *encoded_element_name; | |
590 | ||
591 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
592 | ret = -1; | |
593 | goto end; | |
594 | } | |
595 | ||
596 | encoded_element_name = encode_string(element_name); | |
597 | if (!encoded_element_name) { | |
598 | ret = -1; | |
599 | goto end; | |
600 | } | |
601 | ||
602 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
603 | encoded_element_name, "%" PRIu64, value); | |
604 | xmlFree(encoded_element_name); | |
605 | end: | |
28676a1d | 606 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
607 | } |
608 | ||
609 | LTTNG_HIDDEN | |
610 | int config_writer_write_element_signed_int(struct config_writer *writer, | |
611 | const char *element_name, int64_t value) | |
612 | { | |
613 | int ret; | |
614 | xmlChar *encoded_element_name; | |
615 | ||
616 | if (!writer || !writer->writer || !element_name || !element_name[0]) { | |
617 | ret = -1; | |
618 | goto end; | |
619 | } | |
620 | ||
621 | encoded_element_name = encode_string(element_name); | |
622 | if (!encoded_element_name) { | |
623 | ret = -1; | |
624 | goto end; | |
625 | } | |
626 | ||
627 | ret = xmlTextWriterWriteFormatElement(writer->writer, | |
628 | encoded_element_name, "%" PRIi64, value); | |
629 | xmlFree(encoded_element_name); | |
630 | end: | |
28676a1d | 631 | return ret >= 0 ? 0 : ret; |
36f2332b JG |
632 | } |
633 | ||
634 | LTTNG_HIDDEN | |
635 | int config_writer_write_element_bool(struct config_writer *writer, | |
636 | const char *element_name, int value) | |
637 | { | |
638 | return config_writer_write_element_string(writer, element_name, | |
639 | value ? config_xml_true : config_xml_false); | |
640 | } | |
641 | ||
642 | LTTNG_HIDDEN | |
643 | int config_writer_write_element_string(struct config_writer *writer, | |
644 | const char *element_name, const char *value) | |
645 | { | |
646 | int ret; | |
647 | xmlChar *encoded_element_name = NULL; | |
648 | xmlChar *encoded_value = NULL; | |
649 | ||
650 | if (!writer || !writer->writer || !element_name || !element_name[0] || | |
651 | !value) { | |
652 | ret = -1; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | encoded_element_name = encode_string(element_name); | |
657 | if (!encoded_element_name) { | |
658 | ret = -1; | |
659 | goto end; | |
660 | } | |
661 | ||
662 | encoded_value = encode_string(value); | |
663 | if (!encoded_value) { | |
664 | ret = -1; | |
665 | goto end; | |
666 | } | |
667 | ||
668 | ret = xmlTextWriterWriteElement(writer->writer, encoded_element_name, | |
dcf266c0 | 669 | encoded_value); |
36f2332b JG |
670 | end: |
671 | xmlFree(encoded_element_name); | |
672 | xmlFree(encoded_value); | |
28676a1d | 673 | return ret >= 0 ? 0 : ret; |
36f2332b | 674 | } |
dcf266c0 JG |
675 | |
676 | static | |
677 | void xml_error_handler(void *ctx, const char *format, ...) | |
678 | { | |
679 | char *errMsg; | |
680 | va_list args; | |
681 | int ret; | |
682 | ||
683 | va_start(args, format); | |
684 | ret = vasprintf(&errMsg, format, args); | |
6c043b48 | 685 | va_end(args); |
dcf266c0 JG |
686 | if (ret == -1) { |
687 | ERR("String allocation failed in xml error handler"); | |
688 | return; | |
689 | } | |
dcf266c0 JG |
690 | |
691 | fprintf(stderr, "XML Error: %s", errMsg); | |
692 | free(errMsg); | |
693 | } | |
694 | ||
695 | static | |
696 | void fini_session_config_validation_ctx( | |
697 | struct session_config_validation_ctx *ctx) | |
698 | { | |
699 | if (ctx->parser_ctx) { | |
700 | xmlSchemaFreeParserCtxt(ctx->parser_ctx); | |
701 | } | |
702 | ||
703 | if (ctx->schema) { | |
704 | xmlSchemaFree(ctx->schema); | |
705 | } | |
706 | ||
707 | if (ctx->schema_validation_ctx) { | |
708 | xmlSchemaFreeValidCtxt(ctx->schema_validation_ctx); | |
709 | } | |
710 | ||
711 | memset(ctx, 0, sizeof(struct session_config_validation_ctx)); | |
712 | } | |
713 | ||
54e399cb JG |
714 | static |
715 | char *get_session_config_xsd_path() | |
716 | { | |
717 | char *xsd_path; | |
e8fa9fb0 | 718 | const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV); |
54e399cb JG |
719 | size_t base_path_len; |
720 | size_t max_path_len; | |
721 | ||
722 | if (!base_path) { | |
723 | base_path = DEFAULT_SESSION_CONFIG_XSD_PATH; | |
724 | } | |
725 | ||
726 | base_path_len = strlen(base_path); | |
727 | max_path_len = base_path_len + | |
728 | sizeof(DEFAULT_SESSION_CONFIG_XSD_FILENAME) + 1; | |
729 | xsd_path = zmalloc(max_path_len); | |
730 | if (!xsd_path) { | |
731 | goto end; | |
732 | } | |
733 | ||
00a7f6f8 | 734 | strcpy(xsd_path, base_path); |
54e399cb JG |
735 | if (xsd_path[base_path_len - 1] != '/') { |
736 | xsd_path[base_path_len++] = '/'; | |
737 | } | |
738 | ||
00a7f6f8 | 739 | strcpy(xsd_path + base_path_len, DEFAULT_SESSION_CONFIG_XSD_FILENAME); |
54e399cb JG |
740 | end: |
741 | return xsd_path; | |
742 | } | |
743 | ||
dcf266c0 JG |
744 | static |
745 | int init_session_config_validation_ctx( | |
746 | struct session_config_validation_ctx *ctx) | |
747 | { | |
748 | int ret; | |
54e399cb JG |
749 | char *xsd_path = get_session_config_xsd_path(); |
750 | ||
751 | if (!xsd_path) { | |
752 | ret = -LTTNG_ERR_NOMEM; | |
753 | goto end; | |
754 | } | |
dcf266c0 | 755 | |
54e399cb | 756 | ctx->parser_ctx = xmlSchemaNewParserCtxt(xsd_path); |
dcf266c0 JG |
757 | if (!ctx->parser_ctx) { |
758 | ERR("XSD parser context creation failed"); | |
759 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
760 | goto end; | |
761 | } | |
762 | xmlSchemaSetParserErrors(ctx->parser_ctx, xml_error_handler, | |
763 | xml_error_handler, NULL); | |
764 | ||
765 | ctx->schema = xmlSchemaParse(ctx->parser_ctx); | |
766 | if (!ctx->schema) { | |
767 | ERR("XSD parsing failed"); | |
768 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
769 | goto end; | |
770 | } | |
771 | ||
772 | ctx->schema_validation_ctx = xmlSchemaNewValidCtxt(ctx->schema); | |
773 | if (!ctx->schema_validation_ctx) { | |
774 | ERR("XSD validation context creation failed"); | |
775 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
776 | goto end; | |
777 | } | |
778 | ||
779 | xmlSchemaSetValidErrors(ctx->schema_validation_ctx, xml_error_handler, | |
780 | xml_error_handler, NULL); | |
781 | ret = 0; | |
782 | ||
783 | end: | |
784 | if (ret) { | |
785 | fini_session_config_validation_ctx(ctx); | |
786 | } | |
787 | ||
54e399cb | 788 | free(xsd_path); |
dcf266c0 JG |
789 | return ret; |
790 | } | |
791 | ||
792 | static | |
793 | int parse_uint(xmlChar *str, uint64_t *val) | |
794 | { | |
795 | int ret; | |
796 | char *endptr; | |
797 | ||
798 | if (!str || !val) { | |
799 | ret = -1; | |
800 | goto end; | |
801 | } | |
802 | ||
803 | *val = strtoull((const char *) str, &endptr, 10); | |
804 | if (!endptr || *endptr) { | |
805 | ret = -1; | |
806 | } else { | |
807 | ret = 0; | |
808 | } | |
809 | ||
810 | end: | |
811 | return ret; | |
812 | } | |
813 | ||
814 | static | |
815 | int parse_int(xmlChar *str, int64_t *val) | |
816 | { | |
817 | int ret; | |
818 | char *endptr; | |
819 | ||
820 | if (!str || !val) { | |
821 | ret = -1; | |
822 | goto end; | |
823 | } | |
824 | ||
825 | *val = strtoll((const char *) str, &endptr, 10); | |
826 | if (!endptr || *endptr) { | |
827 | ret = -1; | |
828 | } else { | |
829 | ret = 0; | |
830 | } | |
831 | ||
832 | end: | |
833 | return ret; | |
834 | } | |
835 | ||
836 | static | |
837 | int parse_bool(xmlChar *str, int *val) | |
838 | { | |
839 | int ret = 0; | |
840 | ||
841 | if (!str || !val) { | |
842 | ret = -1; | |
843 | goto end; | |
844 | } | |
845 | ||
846 | if (!strcmp((const char *) str, config_xml_true)) { | |
847 | *val = 1; | |
848 | } else if (!strcmp((const char *) str, config_xml_false)) { | |
849 | *val = 0; | |
850 | } else { | |
851 | WARN("Invalid boolean value encoutered (%s).", | |
852 | (const char *) str); | |
853 | ret = -1; | |
854 | } | |
855 | end: | |
856 | return ret; | |
857 | } | |
858 | ||
859 | static | |
860 | int get_domain_type(xmlChar *domain) | |
861 | { | |
862 | int ret; | |
863 | ||
864 | if (!domain) { | |
865 | goto error; | |
866 | } | |
867 | ||
868 | if (!strcmp((char *) domain, config_domain_type_kernel)) { | |
869 | ret = LTTNG_DOMAIN_KERNEL; | |
870 | } else if (!strcmp((char *) domain, config_domain_type_ust)) { | |
871 | ret = LTTNG_DOMAIN_UST; | |
872 | } else if (!strcmp((char *) domain, config_domain_type_jul)) { | |
873 | ret = LTTNG_DOMAIN_JUL; | |
5cdb6027 DG |
874 | } else if (!strcmp((char *) domain, config_domain_type_log4j)) { |
875 | ret = LTTNG_DOMAIN_LOG4J; | |
0e115563 DG |
876 | } else if (!strcmp((char *) domain, config_domain_type_python)) { |
877 | ret = LTTNG_DOMAIN_PYTHON; | |
dcf266c0 JG |
878 | } else { |
879 | goto error; | |
880 | } | |
881 | ||
882 | return ret; | |
883 | error: | |
884 | return -1; | |
885 | } | |
886 | ||
887 | static | |
888 | int get_buffer_type(xmlChar *buffer_type) | |
889 | { | |
890 | int ret; | |
891 | ||
892 | if (!buffer_type) { | |
893 | goto error; | |
894 | } | |
895 | ||
896 | if (!strcmp((char *) buffer_type, config_buffer_type_global)) { | |
897 | ret = LTTNG_BUFFER_GLOBAL; | |
898 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_uid)) { | |
899 | ret = LTTNG_BUFFER_PER_UID; | |
900 | } else if (!strcmp((char *) buffer_type, config_buffer_type_per_pid)) { | |
901 | ret = LTTNG_BUFFER_PER_PID; | |
902 | } else { | |
903 | goto error; | |
904 | } | |
905 | ||
906 | return ret; | |
907 | error: | |
908 | return -1; | |
909 | } | |
910 | ||
911 | static | |
912 | int get_overwrite_mode(xmlChar *overwrite_mode) | |
913 | { | |
914 | int ret; | |
915 | ||
916 | if (!overwrite_mode) { | |
917 | goto error; | |
918 | } | |
919 | ||
920 | if (!strcmp((char *) overwrite_mode, config_overwrite_mode_overwrite)) { | |
921 | ret = 1; | |
922 | } else if (!strcmp((char *) overwrite_mode, | |
923 | config_overwrite_mode_discard)) { | |
924 | ret = 0; | |
925 | } else { | |
926 | goto error; | |
927 | } | |
928 | ||
929 | return ret; | |
930 | error: | |
931 | return -1; | |
932 | } | |
933 | ||
934 | static | |
935 | int get_output_type(xmlChar *output_type) | |
936 | { | |
937 | int ret; | |
938 | ||
939 | if (!output_type) { | |
940 | goto error; | |
941 | } | |
942 | ||
943 | if (!strcmp((char *) output_type, config_output_type_mmap)) { | |
944 | ret = LTTNG_EVENT_MMAP; | |
945 | } else if (!strcmp((char *) output_type, config_output_type_splice)) { | |
946 | ret = LTTNG_EVENT_SPLICE; | |
947 | } else { | |
948 | goto error; | |
949 | } | |
950 | ||
951 | return ret; | |
952 | error: | |
953 | return -1; | |
954 | } | |
955 | ||
956 | static | |
957 | int get_event_type(xmlChar *event_type) | |
958 | { | |
959 | int ret; | |
960 | ||
961 | if (!event_type) { | |
962 | goto error; | |
963 | } | |
964 | ||
965 | if (!strcmp((char *) event_type, config_event_type_all)) { | |
966 | ret = LTTNG_EVENT_ALL; | |
967 | } else if (!strcmp((char *) event_type, config_event_type_tracepoint)) { | |
968 | ret = LTTNG_EVENT_TRACEPOINT; | |
969 | } else if (!strcmp((char *) event_type, config_event_type_probe)) { | |
970 | ret = LTTNG_EVENT_PROBE; | |
c1e83fb4 FD |
971 | } else if (!strcmp((char *) event_type, |
972 | config_event_type_userspace_probe)) { | |
973 | ret = LTTNG_EVENT_USERSPACE_PROBE; | |
dcf266c0 JG |
974 | } else if (!strcmp((char *) event_type, config_event_type_function)) { |
975 | ret = LTTNG_EVENT_FUNCTION; | |
976 | } else if (!strcmp((char *) event_type, | |
c1e83fb4 | 977 | config_event_type_function_entry)) { |
dcf266c0 JG |
978 | ret = LTTNG_EVENT_FUNCTION_ENTRY; |
979 | } else if (!strcmp((char *) event_type, config_event_type_noop)) { | |
980 | ret = LTTNG_EVENT_NOOP; | |
981 | } else if (!strcmp((char *) event_type, config_event_type_syscall)) { | |
982 | ret = LTTNG_EVENT_SYSCALL; | |
983 | } else { | |
984 | goto error; | |
985 | } | |
986 | ||
987 | return ret; | |
988 | error: | |
989 | return -1; | |
990 | } | |
991 | ||
992 | static | |
993 | int get_loglevel_type(xmlChar *loglevel_type) | |
994 | { | |
995 | int ret; | |
996 | ||
997 | if (!loglevel_type) { | |
998 | goto error; | |
999 | } | |
1000 | ||
1001 | if (!strcmp((char *) loglevel_type, config_loglevel_type_all)) { | |
1002 | ret = LTTNG_EVENT_LOGLEVEL_ALL; | |
1003 | } else if (!strcmp((char *) loglevel_type, | |
1004 | config_loglevel_type_range)) { | |
1005 | ret = LTTNG_EVENT_LOGLEVEL_RANGE; | |
1006 | } else if (!strcmp((char *) loglevel_type, | |
1007 | config_loglevel_type_single)) { | |
1008 | ret = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
1009 | } else { | |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | return ret; | |
1014 | error: | |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Return the context type or -1 on error. | |
1020 | */ | |
1021 | static | |
1022 | int get_context_type(xmlChar *context_type) | |
1023 | { | |
1024 | int ret; | |
1025 | ||
1026 | if (!context_type) { | |
1027 | goto error; | |
1028 | } | |
1029 | ||
1030 | if (!strcmp((char *) context_type, config_event_context_pid)) { | |
1031 | ret = LTTNG_EVENT_CONTEXT_PID; | |
1032 | } else if (!strcmp((char *) context_type, | |
1033 | config_event_context_procname)) { | |
1034 | ret = LTTNG_EVENT_CONTEXT_PROCNAME; | |
1035 | } else if (!strcmp((char *) context_type, | |
1036 | config_event_context_prio)) { | |
1037 | ret = LTTNG_EVENT_CONTEXT_PRIO; | |
1038 | } else if (!strcmp((char *) context_type, | |
1039 | config_event_context_nice)) { | |
1040 | ret = LTTNG_EVENT_CONTEXT_NICE; | |
1041 | } else if (!strcmp((char *) context_type, | |
1042 | config_event_context_vpid)) { | |
1043 | ret = LTTNG_EVENT_CONTEXT_VPID; | |
1044 | } else if (!strcmp((char *) context_type, | |
1045 | config_event_context_tid)) { | |
1046 | ret = LTTNG_EVENT_CONTEXT_TID; | |
1047 | } else if (!strcmp((char *) context_type, | |
1048 | config_event_context_vtid)) { | |
1049 | ret = LTTNG_EVENT_CONTEXT_VTID; | |
1050 | } else if (!strcmp((char *) context_type, | |
1051 | config_event_context_ppid)) { | |
1052 | ret = LTTNG_EVENT_CONTEXT_PPID; | |
1053 | } else if (!strcmp((char *) context_type, | |
1054 | config_event_context_vppid)) { | |
1055 | ret = LTTNG_EVENT_CONTEXT_VPPID; | |
1056 | } else if (!strcmp((char *) context_type, | |
1057 | config_event_context_pthread_id)) { | |
1058 | ret = LTTNG_EVENT_CONTEXT_PTHREAD_ID; | |
1059 | } else if (!strcmp((char *) context_type, | |
1060 | config_event_context_hostname)) { | |
1061 | ret = LTTNG_EVENT_CONTEXT_HOSTNAME; | |
1062 | } else if (!strcmp((char *) context_type, | |
1063 | config_event_context_ip)) { | |
1064 | ret = LTTNG_EVENT_CONTEXT_IP; | |
1ae5e83e JD |
1065 | } else if (!strcmp((char *) context_type, |
1066 | config_event_context_interruptible)) { | |
1067 | ret = LTTNG_EVENT_CONTEXT_INTERRUPTIBLE; | |
1068 | } else if (!strcmp((char *) context_type, | |
1069 | config_event_context_preemptible)) { | |
1070 | ret = LTTNG_EVENT_CONTEXT_PREEMPTIBLE; | |
1071 | } else if (!strcmp((char *) context_type, | |
1072 | config_event_context_need_reschedule)) { | |
1073 | ret = LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE; | |
1074 | } else if (!strcmp((char *) context_type, | |
1075 | config_event_context_migratable)) { | |
1076 | ret = LTTNG_EVENT_CONTEXT_MIGRATABLE; | |
16c4c991 FD |
1077 | } else if (!strcmp((char *) context_type, |
1078 | config_event_context_callstack_user)) { | |
1079 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_USER; | |
1080 | } else if (!strcmp((char *) context_type, | |
1081 | config_event_context_callstack_kernel)) { | |
1082 | ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL; | |
40e14884 MJ |
1083 | } else if (!strcmp((char *) context_type, |
1084 | config_event_context_cgroup_ns)) { | |
1085 | ret = LTTNG_EVENT_CONTEXT_CGROUP_NS; | |
1086 | } else if (!strcmp((char *) context_type, | |
1087 | config_event_context_ipc_ns)) { | |
1088 | ret = LTTNG_EVENT_CONTEXT_IPC_NS; | |
1089 | } else if (!strcmp((char *) context_type, | |
1090 | config_event_context_mnt_ns)) { | |
1091 | ret = LTTNG_EVENT_CONTEXT_MNT_NS; | |
1092 | } else if (!strcmp((char *) context_type, | |
1093 | config_event_context_net_ns)) { | |
1094 | ret = LTTNG_EVENT_CONTEXT_NET_NS; | |
1095 | } else if (!strcmp((char *) context_type, | |
1096 | config_event_context_pid_ns)) { | |
1097 | ret = LTTNG_EVENT_CONTEXT_PID_NS; | |
d37ac3cd MJ |
1098 | } else if (!strcmp((char *) context_type, |
1099 | config_event_context_time_ns)) { | |
1100 | ret = LTTNG_EVENT_CONTEXT_TIME_NS; | |
40e14884 MJ |
1101 | } else if (!strcmp((char *) context_type, |
1102 | config_event_context_user_ns)) { | |
1103 | ret = LTTNG_EVENT_CONTEXT_USER_NS; | |
1104 | } else if (!strcmp((char *) context_type, | |
1105 | config_event_context_uts_ns)) { | |
1106 | ret = LTTNG_EVENT_CONTEXT_UTS_NS; | |
499cbfa1 MJ |
1107 | } else if (!strcmp((char *) context_type, |
1108 | config_event_context_uid)) { | |
1109 | ret = LTTNG_EVENT_CONTEXT_UID; | |
1110 | } else if (!strcmp((char *) context_type, | |
1111 | config_event_context_euid)) { | |
1112 | ret = LTTNG_EVENT_CONTEXT_EUID; | |
1113 | } else if (!strcmp((char *) context_type, | |
1114 | config_event_context_suid)) { | |
1115 | ret = LTTNG_EVENT_CONTEXT_SUID; | |
1116 | } else if (!strcmp((char *) context_type, | |
1117 | config_event_context_gid)) { | |
1118 | ret = LTTNG_EVENT_CONTEXT_GID; | |
1119 | } else if (!strcmp((char *) context_type, | |
1120 | config_event_context_egid)) { | |
1121 | ret = LTTNG_EVENT_CONTEXT_EGID; | |
1122 | } else if (!strcmp((char *) context_type, | |
1123 | config_event_context_sgid)) { | |
1124 | ret = LTTNG_EVENT_CONTEXT_SGID; | |
1125 | } else if (!strcmp((char *) context_type, | |
1126 | config_event_context_vuid)) { | |
1127 | ret = LTTNG_EVENT_CONTEXT_VUID; | |
1128 | } else if (!strcmp((char *) context_type, | |
1129 | config_event_context_veuid)) { | |
1130 | ret = LTTNG_EVENT_CONTEXT_VEUID; | |
1131 | } else if (!strcmp((char *) context_type, | |
1132 | config_event_context_vsuid)) { | |
1133 | ret = LTTNG_EVENT_CONTEXT_VSUID; | |
1134 | } else if (!strcmp((char *) context_type, | |
1135 | config_event_context_vgid)) { | |
1136 | ret = LTTNG_EVENT_CONTEXT_VGID; | |
1137 | } else if (!strcmp((char *) context_type, | |
1138 | config_event_context_vegid)) { | |
1139 | ret = LTTNG_EVENT_CONTEXT_VEGID; | |
1140 | } else if (!strcmp((char *) context_type, | |
1141 | config_event_context_vsgid)) { | |
1142 | ret = LTTNG_EVENT_CONTEXT_VSGID; | |
dcf266c0 JG |
1143 | } else { |
1144 | goto error; | |
1145 | } | |
1146 | ||
1147 | return ret; | |
1148 | error: | |
1149 | return -1; | |
1150 | } | |
1151 | ||
1152 | static | |
1153 | int init_domain(xmlNodePtr domain_node, struct lttng_domain *domain) | |
1154 | { | |
1155 | int ret; | |
1156 | xmlNodePtr node; | |
1157 | ||
1158 | for (node = xmlFirstElementChild(domain_node); node; | |
1159 | node = xmlNextElementSibling(node)) { | |
1160 | if (!strcmp((const char *) node->name, config_element_type)) { | |
1161 | /* domain type */ | |
1162 | xmlChar *node_content = xmlNodeGetContent(node); | |
1163 | if (!node_content) { | |
1164 | ret = -LTTNG_ERR_NOMEM; | |
1165 | goto end; | |
1166 | } | |
1167 | ||
1168 | ret = get_domain_type(node_content); | |
1169 | free(node_content); | |
1170 | if (ret < 0) { | |
1171 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1172 | goto end; | |
1173 | } | |
1174 | ||
1175 | domain->type = ret; | |
1176 | } else if (!strcmp((const char *) node->name, | |
1177 | config_element_buffer_type)) { | |
1178 | /* buffer type */ | |
1179 | xmlChar *node_content = xmlNodeGetContent(node); | |
1180 | if (!node_content) { | |
1181 | ret = -LTTNG_ERR_NOMEM; | |
1182 | goto end; | |
1183 | } | |
1184 | ||
1185 | ret = get_buffer_type(node_content); | |
1186 | free(node_content); | |
1187 | if (ret < 0) { | |
1188 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1189 | goto end; | |
1190 | } | |
1191 | ||
1192 | domain->buf_type = ret; | |
1193 | } | |
1194 | } | |
1195 | ret = 0; | |
1196 | end: | |
1197 | return ret; | |
1198 | } | |
1199 | ||
1200 | static | |
1201 | int get_net_output_uris(xmlNodePtr net_output_node, char **control_uri, | |
1202 | char **data_uri) | |
1203 | { | |
1204 | xmlNodePtr node; | |
1205 | ||
1206 | for (node = xmlFirstElementChild(net_output_node); node; | |
1207 | node = xmlNextElementSibling(node)) { | |
1208 | if (!strcmp((const char *) node->name, config_element_control_uri)) { | |
1209 | /* control_uri */ | |
1210 | *control_uri = (char *) xmlNodeGetContent(node); | |
1211 | if (!*control_uri) { | |
1212 | break; | |
1213 | } | |
1214 | } else { | |
1215 | /* data_uri */ | |
1216 | *data_uri = (char *) xmlNodeGetContent(node); | |
1217 | if (!*data_uri) { | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | return *control_uri || *data_uri ? 0 : -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1224 | } | |
1225 | ||
1226 | static | |
1227 | int process_consumer_output(xmlNodePtr consumer_output_node, | |
1228 | struct consumer_output *output) | |
1229 | { | |
1230 | int ret; | |
1231 | xmlNodePtr node; | |
1232 | ||
1233 | assert(output); | |
1234 | ||
1235 | for (node = xmlFirstElementChild(consumer_output_node); node; | |
1236 | node = xmlNextElementSibling(node)) { | |
1237 | if (!strcmp((const char *) node->name, config_element_enabled)) { | |
1238 | xmlChar *enabled_str = xmlNodeGetContent(node); | |
1239 | ||
1240 | /* enabled */ | |
1241 | if (!enabled_str) { | |
1242 | ret = -LTTNG_ERR_NOMEM; | |
1243 | goto end; | |
1244 | } | |
1245 | ||
1246 | ret = parse_bool(enabled_str, &output->enabled); | |
1247 | free(enabled_str); | |
1248 | if (ret) { | |
1249 | goto end; | |
1250 | } | |
1251 | } else { | |
1252 | xmlNodePtr output_type_node; | |
1253 | ||
1254 | /* destination */ | |
1255 | output_type_node = xmlFirstElementChild(node); | |
1256 | if (!output_type_node) { | |
1257 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1258 | goto end; | |
1259 | } | |
1260 | ||
1261 | if (!strcmp((const char *) output_type_node->name, | |
1262 | config_element_path)) { | |
1263 | /* path */ | |
1264 | output->path = (char *) xmlNodeGetContent(output_type_node); | |
1265 | if (!output->path) { | |
1266 | ret = -LTTNG_ERR_NOMEM; | |
1267 | goto end; | |
1268 | } | |
1269 | } else { | |
1270 | /* net_output */ | |
1271 | ret = get_net_output_uris(output_type_node, | |
1272 | &output->control_uri, &output->data_uri); | |
1273 | if (ret) { | |
1274 | goto end; | |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | } | |
1279 | ret = 0; | |
1280 | ||
1281 | end: | |
1282 | if (ret) { | |
1283 | free(output->path); | |
1284 | free(output->control_uri); | |
1285 | free(output->data_uri); | |
1286 | memset(output, 0, sizeof(struct consumer_output)); | |
1287 | } | |
1288 | return ret; | |
1289 | } | |
1290 | ||
1291 | static | |
95681498 JG |
1292 | int create_session_net_output(const char *name, const char *control_uri, |
1293 | const char *data_uri) | |
dcf266c0 JG |
1294 | { |
1295 | int ret; | |
1296 | struct lttng_handle *handle; | |
1297 | const char *uri = NULL; | |
1298 | ||
1299 | assert(name); | |
dcf266c0 | 1300 | |
95681498 | 1301 | handle = lttng_create_handle(name, NULL); |
dcf266c0 JG |
1302 | if (!handle) { |
1303 | ret = -LTTNG_ERR_NOMEM; | |
1304 | goto end; | |
1305 | } | |
1306 | ||
1307 | if (!control_uri || !data_uri) { | |
1308 | uri = control_uri ? control_uri : data_uri; | |
1309 | control_uri = uri; | |
1310 | data_uri = uri; | |
1311 | } | |
1312 | ||
1313 | ret = lttng_set_consumer_url(handle, control_uri, data_uri); | |
1314 | lttng_destroy_handle(handle); | |
1315 | end: | |
1316 | return ret; | |
1317 | } | |
1318 | ||
1319 | static | |
1b08cbce JR |
1320 | int create_snapshot_session(const char *session_name, xmlNodePtr output_node, |
1321 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1322 | { |
1323 | int ret; | |
1324 | xmlNodePtr node = NULL; | |
1325 | xmlNodePtr snapshot_output_list_node; | |
1326 | xmlNodePtr snapshot_output_node; | |
1327 | ||
1328 | assert(session_name); | |
1329 | ||
1330 | ret = lttng_create_session_snapshot(session_name, NULL); | |
1331 | if (ret) { | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | if (!output_node) { | |
1336 | goto end; | |
1337 | } | |
1338 | ||
1339 | snapshot_output_list_node = xmlFirstElementChild(output_node); | |
1340 | ||
1341 | /* Parse and create snapshot outputs */ | |
1342 | ||
1343 | for (snapshot_output_node = | |
1344 | xmlFirstElementChild(snapshot_output_list_node); | |
1345 | snapshot_output_node; snapshot_output_node = | |
1346 | xmlNextElementSibling(snapshot_output_node)) { | |
1347 | char *name = NULL; | |
1348 | uint64_t max_size = UINT64_MAX; | |
1349 | struct consumer_output output = { 0 }; | |
1350 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1b08cbce JR |
1351 | const char *control_uri = NULL; |
1352 | const char *data_uri = NULL; | |
1353 | const char *path = NULL; | |
dcf266c0 JG |
1354 | |
1355 | for (node = xmlFirstElementChild(snapshot_output_node); node; | |
1356 | node = xmlNextElementSibling(node)) { | |
1357 | if (!strcmp((const char *) node->name, | |
1358 | config_element_name)) { | |
1359 | /* name */ | |
1360 | name = (char *) xmlNodeGetContent(node); | |
1361 | if (!name) { | |
1362 | ret = -LTTNG_ERR_NOMEM; | |
1363 | goto error_snapshot_output; | |
1364 | } | |
1365 | } else if (!strcmp((const char *) node->name, | |
1366 | config_element_max_size)) { | |
1367 | xmlChar *content = xmlNodeGetContent(node); | |
1368 | ||
1369 | /* max_size */ | |
1370 | if (!content) { | |
1371 | ret = -LTTNG_ERR_NOMEM; | |
1372 | goto error_snapshot_output; | |
1373 | } | |
1374 | ret = parse_uint(content, &max_size); | |
1375 | free(content); | |
1376 | if (ret) { | |
1377 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1378 | goto error_snapshot_output; | |
1379 | } | |
1380 | } else { | |
1381 | /* consumer_output */ | |
1382 | ret = process_consumer_output(node, &output); | |
1383 | if (ret) { | |
1384 | goto error_snapshot_output; | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | ||
21a3f144 JR |
1389 | control_uri = output.control_uri; |
1390 | data_uri = output.data_uri; | |
1391 | path = output.path; | |
1392 | ||
1b08cbce JR |
1393 | if (overrides) { |
1394 | if (overrides->path_url) { | |
1b08cbce | 1395 | path = overrides->path_url; |
21a3f144 JR |
1396 | /* Control/data_uri are null */ |
1397 | control_uri = NULL; | |
1398 | data_uri = NULL; | |
1b08cbce JR |
1399 | } else { |
1400 | if (overrides->ctrl_url) { | |
1b08cbce | 1401 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1402 | /* path is null */ |
1403 | path = NULL; | |
1b08cbce JR |
1404 | } |
1405 | if (overrides->data_url) { | |
1b08cbce | 1406 | data_uri = overrides->data_url; |
21a3f144 JR |
1407 | /* path is null */ |
1408 | path = NULL; | |
1b08cbce JR |
1409 | } |
1410 | } | |
1b08cbce JR |
1411 | } |
1412 | ||
dcf266c0 JG |
1413 | snapshot_output = lttng_snapshot_output_create(); |
1414 | if (!snapshot_output) { | |
1415 | ret = -LTTNG_ERR_NOMEM; | |
1416 | goto error_snapshot_output; | |
1417 | } | |
1418 | ||
1419 | ret = lttng_snapshot_output_set_name(name, snapshot_output); | |
1420 | if (ret) { | |
1421 | goto error_snapshot_output; | |
1422 | } | |
1423 | ||
1424 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1425 | if (ret) { | |
1426 | goto error_snapshot_output; | |
1427 | } | |
1428 | ||
1b08cbce JR |
1429 | if (path) { |
1430 | ret = lttng_snapshot_output_set_ctrl_url(path, | |
dcf266c0 JG |
1431 | snapshot_output); |
1432 | if (ret) { | |
1433 | goto error_snapshot_output; | |
1434 | } | |
1435 | } else { | |
1b08cbce JR |
1436 | if (control_uri) { |
1437 | ret = lttng_snapshot_output_set_ctrl_url(control_uri, | |
dcf266c0 JG |
1438 | snapshot_output); |
1439 | if (ret) { | |
1440 | goto error_snapshot_output; | |
1441 | } | |
1442 | } | |
1443 | ||
1b08cbce JR |
1444 | if (data_uri) { |
1445 | ret = lttng_snapshot_output_set_data_url(data_uri, | |
dcf266c0 JG |
1446 | snapshot_output); |
1447 | if (ret) { | |
1448 | goto error_snapshot_output; | |
1449 | } | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | ret = lttng_snapshot_add_output(session_name, snapshot_output); | |
1454 | error_snapshot_output: | |
1455 | free(name); | |
1456 | free(output.path); | |
1457 | free(output.control_uri); | |
1458 | free(output.data_uri); | |
1459 | lttng_snapshot_output_destroy(snapshot_output); | |
1460 | if (ret) { | |
1461 | goto end; | |
1462 | } | |
1463 | } | |
1464 | end: | |
1465 | return ret; | |
1466 | } | |
1467 | ||
1468 | static | |
1469 | int create_session(const char *name, | |
dcf266c0 | 1470 | xmlNodePtr output_node, |
1b08cbce JR |
1471 | uint64_t live_timer_interval, |
1472 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
1473 | { |
1474 | int ret; | |
1475 | struct consumer_output output = { 0 }; | |
1476 | xmlNodePtr consumer_output_node; | |
1b08cbce JR |
1477 | const char *control_uri = NULL; |
1478 | const char *data_uri = NULL; | |
1479 | const char *path = NULL; | |
dcf266c0 JG |
1480 | |
1481 | assert(name); | |
dcf266c0 JG |
1482 | |
1483 | if (output_node) { | |
1484 | consumer_output_node = xmlFirstElementChild(output_node); | |
1485 | if (!consumer_output_node) { | |
1486 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1487 | goto end; | |
1488 | } | |
1489 | ||
1490 | if (strcmp((const char *) consumer_output_node->name, | |
1491 | config_element_consumer_output)) { | |
1492 | WARN("Invalid output type, expected %s node", | |
1493 | config_element_consumer_output); | |
1494 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1495 | goto end; | |
1496 | } | |
1497 | ||
1498 | ret = process_consumer_output(consumer_output_node, &output); | |
1499 | if (ret) { | |
1500 | goto end; | |
1501 | } | |
1502 | } | |
1503 | ||
21a3f144 JR |
1504 | control_uri = output.control_uri; |
1505 | data_uri = output.data_uri; | |
1506 | path = output.path; | |
1507 | ||
1b08cbce JR |
1508 | /* Check for override and apply them */ |
1509 | if (overrides) { | |
1510 | if (overrides->path_url) { | |
1b08cbce | 1511 | path = overrides->path_url; |
21a3f144 JR |
1512 | /* control/data_uri are null */; |
1513 | control_uri = NULL; | |
1514 | data_uri = NULL; | |
1b08cbce JR |
1515 | } else { |
1516 | if (overrides->ctrl_url) { | |
1b08cbce | 1517 | control_uri = overrides->ctrl_url; |
21a3f144 JR |
1518 | /* path is null */ |
1519 | path = NULL; | |
1b08cbce JR |
1520 | } |
1521 | if (overrides->data_url) { | |
1b08cbce | 1522 | data_uri = overrides->data_url; |
21a3f144 JR |
1523 | /* path is null */ |
1524 | path = NULL; | |
1b08cbce JR |
1525 | } |
1526 | } | |
1b08cbce JR |
1527 | } |
1528 | ||
21a3f144 | 1529 | |
1b08cbce | 1530 | if (live_timer_interval != UINT64_MAX && !control_uri && !data_uri) { |
dcf266c0 JG |
1531 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1532 | goto end; | |
1533 | } | |
1534 | ||
1b08cbce | 1535 | if (control_uri || data_uri) { |
dcf266c0 JG |
1536 | /* network destination */ |
1537 | if (live_timer_interval && live_timer_interval != UINT64_MAX) { | |
b664f89a DG |
1538 | /* |
1539 | * URLs are provided for sure since the test above make sure that | |
1540 | * with a live timer the data and control URIs are provided. So, | |
1541 | * NULL is passed here and will be set right after. | |
1542 | */ | |
1543 | ret = lttng_create_session_live(name, NULL, live_timer_interval); | |
dcf266c0 JG |
1544 | } else { |
1545 | ret = lttng_create_session(name, NULL); | |
1546 | } | |
1547 | if (ret) { | |
1548 | goto end; | |
1549 | } | |
1550 | ||
1b08cbce | 1551 | ret = create_session_net_output(name, control_uri, data_uri); |
95681498 JG |
1552 | if (ret) { |
1553 | goto end; | |
dcf266c0 | 1554 | } |
95681498 | 1555 | |
dcf266c0 JG |
1556 | } else { |
1557 | /* either local output or no output */ | |
1b08cbce | 1558 | ret = lttng_create_session(name, path); |
dcf266c0 JG |
1559 | if (ret) { |
1560 | goto end; | |
1561 | } | |
1562 | } | |
1563 | end: | |
1564 | free(output.path); | |
1565 | free(output.control_uri); | |
1566 | free(output.data_uri); | |
1567 | return ret; | |
1568 | } | |
c1e83fb4 FD |
1569 | |
1570 | static | |
1571 | struct lttng_userspace_probe_location * | |
1572 | process_userspace_probe_function_attribute_node( | |
1573 | xmlNodePtr attribute_node) | |
1574 | { | |
c1e83fb4 | 1575 | xmlNodePtr function_attribute_node; |
717d2dba | 1576 | char *function_name = NULL, *binary_path = NULL; |
c1e83fb4 FD |
1577 | struct lttng_userspace_probe_location *location = NULL; |
1578 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1579 | ||
1580 | /* | |
1581 | * Process userspace probe location function attributes. The order of | |
1582 | * the fields are not guaranteed so we need to iterate over all fields | |
1583 | * and check at the end if everything we need for this location type is | |
1584 | * there. | |
1585 | */ | |
1586 | for (function_attribute_node = | |
1587 | xmlFirstElementChild(attribute_node); | |
1588 | function_attribute_node; | |
1589 | function_attribute_node = xmlNextElementSibling( | |
1590 | function_attribute_node)) { | |
1591 | /* Handle function name, binary path and lookup method. */ | |
1592 | if (!strcmp((const char *) function_attribute_node->name, | |
1593 | config_element_userspace_probe_function_location_function_name)) { | |
717d2dba | 1594 | function_name = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1595 | if (!function_name) { |
c1e83fb4 FD |
1596 | goto error; |
1597 | } | |
1598 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1599 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1600 | binary_path = (char *) xmlNodeGetContent(function_attribute_node); |
c1e83fb4 | 1601 | if (!binary_path) { |
c1e83fb4 FD |
1602 | goto error; |
1603 | } | |
1604 | } else if (!strcmp((const char *) function_attribute_node->name, | |
1605 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1606 | char *lookup_method_name; |
c1e83fb4 | 1607 | |
717d2dba JG |
1608 | lookup_method_name = (char *) xmlNodeGetContent( |
1609 | function_attribute_node); | |
c1e83fb4 | 1610 | if (!lookup_method_name) { |
c1e83fb4 FD |
1611 | goto error; |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * function_default lookup method defaults to | |
1616 | * function_elf lookup method at the moment. | |
1617 | */ | |
1618 | if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf) | |
1619 | || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) { | |
1620 | lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1621 | if (!lookup_method) { | |
1622 | PERROR("Error creating function default/ELF lookup method"); | |
c1e83fb4 FD |
1623 | } |
1624 | } else { | |
717d2dba JG |
1625 | WARN("Unknown function lookup method"); |
1626 | } | |
1627 | ||
1628 | free(lookup_method_name); | |
1629 | if (!lookup_method) { | |
c1e83fb4 FD |
1630 | goto error; |
1631 | } | |
1632 | } else { | |
1633 | goto error; | |
1634 | } | |
1635 | ||
1636 | /* Check if all the necessary fields were found. */ | |
1637 | if (binary_path && function_name && lookup_method) { | |
717d2dba | 1638 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1639 | location = |
1640 | lttng_userspace_probe_location_function_create( | |
1641 | binary_path, function_name, | |
1642 | lookup_method); | |
717d2dba JG |
1643 | lookup_method = NULL; |
1644 | goto error; | |
c1e83fb4 FD |
1645 | } |
1646 | } | |
1647 | error: | |
717d2dba | 1648 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 FD |
1649 | free(binary_path); |
1650 | free(function_name); | |
c1e83fb4 FD |
1651 | return location; |
1652 | } | |
1653 | ||
1654 | static | |
1655 | struct lttng_userspace_probe_location * | |
1656 | process_userspace_probe_tracepoint_attribute_node( | |
1657 | xmlNodePtr attribute_node) | |
1658 | { | |
c1e83fb4 | 1659 | xmlNodePtr tracepoint_attribute_node; |
c1e83fb4 FD |
1660 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; |
1661 | struct lttng_userspace_probe_location *location = NULL; | |
1662 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
1663 | ||
1664 | /* | |
1665 | * Process userspace probe location tracepoint attributes. The order of | |
1666 | * the fields are not guaranteed so we need to iterate over all fields | |
1667 | * and check at the end if everything we need for this location type is | |
1668 | * there. | |
1669 | */ | |
1670 | for (tracepoint_attribute_node = | |
1671 | xmlFirstElementChild(attribute_node); tracepoint_attribute_node; | |
1672 | tracepoint_attribute_node = xmlNextElementSibling( | |
1673 | tracepoint_attribute_node)) { | |
1674 | if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1675 | config_element_userspace_probe_tracepoint_location_probe_name)) { | |
717d2dba | 1676 | probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1677 | if (!probe_name) { |
c1e83fb4 FD |
1678 | goto error; |
1679 | } | |
1680 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1681 | config_element_userspace_probe_tracepoint_location_provider_name)) { | |
717d2dba | 1682 | provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1683 | if (!provider_name) { |
c1e83fb4 FD |
1684 | goto error; |
1685 | } | |
1686 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1687 | config_element_userspace_probe_location_binary_path)) { | |
717d2dba | 1688 | binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node); |
c1e83fb4 | 1689 | if (!binary_path) { |
c1e83fb4 FD |
1690 | goto error; |
1691 | } | |
1692 | } else if (!strcmp((const char *) tracepoint_attribute_node->name, | |
1693 | config_element_userspace_probe_lookup)) { | |
717d2dba | 1694 | char *lookup_method_name; |
c1e83fb4 | 1695 | |
717d2dba JG |
1696 | lookup_method_name = (char *) xmlNodeGetContent( |
1697 | tracepoint_attribute_node); | |
c1e83fb4 | 1698 | if (!lookup_method_name) { |
c1e83fb4 FD |
1699 | goto error; |
1700 | } | |
1701 | ||
1702 | if (!strcmp(lookup_method_name, | |
1703 | config_element_userspace_probe_lookup_tracepoint_sdt)) { | |
1704 | lookup_method = | |
1705 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1706 | if (!lookup_method) { | |
1707 | PERROR("Error creating tracepoint SDT lookup method"); | |
c1e83fb4 FD |
1708 | } |
1709 | } else { | |
717d2dba JG |
1710 | WARN("Unknown tracepoint lookup method"); |
1711 | } | |
1712 | ||
1713 | free(lookup_method_name); | |
1714 | if (!lookup_method) { | |
c1e83fb4 FD |
1715 | goto error; |
1716 | } | |
1717 | } else { | |
717d2dba | 1718 | WARN("Unknown tracepoint attribute"); |
c1e83fb4 FD |
1719 | goto error; |
1720 | } | |
1721 | ||
1722 | /* Check if all the necessary fields were found. */ | |
1723 | if (binary_path && provider_name && probe_name && lookup_method) { | |
717d2dba | 1724 | /* Ownership of lookup_method is transferred. */ |
c1e83fb4 FD |
1725 | location = |
1726 | lttng_userspace_probe_location_tracepoint_create( | |
1727 | binary_path, provider_name, | |
1728 | probe_name, lookup_method); | |
6bd61b96 | 1729 | lookup_method = NULL; |
717d2dba | 1730 | goto error; |
c1e83fb4 FD |
1731 | } |
1732 | } | |
1733 | error: | |
717d2dba | 1734 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); |
c1e83fb4 | 1735 | free(binary_path); |
c1e83fb4 | 1736 | free(provider_name); |
717d2dba | 1737 | free(probe_name); |
c1e83fb4 FD |
1738 | return location; |
1739 | } | |
1740 | ||
dcf266c0 JG |
1741 | static |
1742 | int process_probe_attribute_node(xmlNodePtr probe_attribute_node, | |
1743 | struct lttng_event_probe_attr *attr) | |
1744 | { | |
1745 | int ret; | |
1746 | ||
1747 | assert(probe_attribute_node); | |
1748 | assert(attr); | |
1749 | ||
1750 | if (!strcmp((const char *) probe_attribute_node->name, | |
1751 | config_element_address)) { | |
1752 | xmlChar *content; | |
1753 | uint64_t addr = 0; | |
1754 | ||
1755 | /* addr */ | |
1756 | content = xmlNodeGetContent(probe_attribute_node); | |
1757 | if (!content) { | |
1758 | ret = -LTTNG_ERR_NOMEM; | |
1759 | goto end; | |
1760 | } | |
1761 | ||
1762 | ret = parse_uint(content, &addr); | |
1763 | free(content); | |
1764 | if (ret) { | |
1765 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | attr->addr = addr; | |
1770 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1771 | config_element_offset)) { | |
1772 | xmlChar *content; | |
1773 | uint64_t offset = 0; | |
1774 | ||
1775 | /* offset */ | |
1776 | content = xmlNodeGetContent(probe_attribute_node); | |
1777 | if (!content) { | |
1778 | ret = -LTTNG_ERR_NOMEM; | |
1779 | goto end; | |
1780 | } | |
1781 | ||
1782 | ret = parse_uint(content, &offset); | |
1783 | free(content); | |
1784 | if (ret) { | |
1785 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1786 | goto end; | |
1787 | } | |
1788 | ||
1789 | attr->offset = offset; | |
1790 | } else if (!strcmp((const char *) probe_attribute_node->name, | |
1791 | config_element_symbol_name)) { | |
1792 | xmlChar *content; | |
dcf266c0 JG |
1793 | |
1794 | /* symbol_name */ | |
1795 | content = xmlNodeGetContent(probe_attribute_node); | |
1796 | if (!content) { | |
1797 | ret = -LTTNG_ERR_NOMEM; | |
1798 | goto end; | |
1799 | } | |
1800 | ||
d2e67842 JG |
1801 | ret = lttng_strncpy(attr->symbol_name, |
1802 | (const char *) content, | |
1803 | LTTNG_SYMBOL_NAME_LEN); | |
1804 | if (ret == -1) { | |
1805 | ERR("symbol name \"%s\"'s length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1806 | (const char *) content, | |
1807 | strlen((const char *) content), | |
1808 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1809 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1810 | free(content); | |
1811 | goto end; | |
1812 | } | |
dcf266c0 JG |
1813 | free(content); |
1814 | } | |
1815 | ret = 0; | |
1816 | end: | |
1817 | return ret; | |
1818 | } | |
1819 | ||
1820 | static | |
1821 | int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle, | |
d7b645e2 | 1822 | const char *channel_name, const enum process_event_node_phase phase) |
dcf266c0 | 1823 | { |
d7b645e2 | 1824 | int ret = 0, i; |
dcf266c0 | 1825 | xmlNodePtr node; |
91744e14 | 1826 | struct lttng_event *event; |
dcf266c0 JG |
1827 | char **exclusions = NULL; |
1828 | unsigned long exclusion_count = 0; | |
1829 | char *filter_expression = NULL; | |
1830 | ||
1831 | assert(event_node); | |
1832 | assert(handle); | |
1833 | assert(channel_name); | |
1834 | ||
91744e14 FD |
1835 | event = lttng_event_create(); |
1836 | if (!event) { | |
1837 | ret = -LTTNG_ERR_NOMEM; | |
1838 | goto end; | |
1839 | } | |
dcf266c0 | 1840 | |
f40eba3d JG |
1841 | /* Initialize default log level which varies by domain */ |
1842 | switch (handle->domain.type) | |
1843 | { | |
1844 | case LTTNG_DOMAIN_JUL: | |
91744e14 | 1845 | event->loglevel = LTTNG_LOGLEVEL_JUL_ALL; |
f40eba3d JG |
1846 | break; |
1847 | case LTTNG_DOMAIN_LOG4J: | |
91744e14 | 1848 | event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL; |
f40eba3d JG |
1849 | break; |
1850 | case LTTNG_DOMAIN_PYTHON: | |
91744e14 | 1851 | event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG; |
f40eba3d JG |
1852 | break; |
1853 | case LTTNG_DOMAIN_UST: | |
1854 | case LTTNG_DOMAIN_KERNEL: | |
91744e14 | 1855 | event->loglevel = LTTNG_LOGLEVEL_DEBUG; |
f40eba3d JG |
1856 | break; |
1857 | default: | |
1858 | assert(0); | |
1859 | } | |
1860 | ||
dcf266c0 JG |
1861 | for (node = xmlFirstElementChild(event_node); node; |
1862 | node = xmlNextElementSibling(node)) { | |
1863 | if (!strcmp((const char *) node->name, config_element_name)) { | |
1864 | xmlChar *content; | |
dcf266c0 JG |
1865 | |
1866 | /* name */ | |
1867 | content = xmlNodeGetContent(node); | |
1868 | if (!content) { | |
1869 | ret = -LTTNG_ERR_NOMEM; | |
1870 | goto end; | |
1871 | } | |
1872 | ||
91744e14 | 1873 | ret = lttng_strncpy(event->name, |
d2e67842 JG |
1874 | (const char *) content, |
1875 | LTTNG_SYMBOL_NAME_LEN); | |
1876 | if (ret == -1) { | |
1877 | WARN("Event \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
1878 | (const char *) content, | |
1879 | strlen((const char *) content), | |
1880 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
1881 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
1882 | free(content); | |
1883 | goto end; | |
1884 | } | |
dcf266c0 JG |
1885 | free(content); |
1886 | } else if (!strcmp((const char *) node->name, | |
1887 | config_element_enabled)) { | |
1888 | xmlChar *content = xmlNodeGetContent(node); | |
1889 | ||
1890 | /* enabled */ | |
1891 | if (!content) { | |
1892 | ret = -LTTNG_ERR_NOMEM; | |
1893 | goto end; | |
1894 | } | |
1895 | ||
91744e14 | 1896 | ret = parse_bool(content, &event->enabled); |
dcf266c0 JG |
1897 | free(content); |
1898 | if (ret) { | |
1899 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1900 | goto end; | |
1901 | } | |
1902 | } else if (!strcmp((const char *) node->name, | |
1903 | config_element_type)) { | |
1904 | xmlChar *content = xmlNodeGetContent(node); | |
1905 | ||
1906 | /* type */ | |
1907 | if (!content) { | |
1908 | ret = -LTTNG_ERR_NOMEM; | |
1909 | goto end; | |
1910 | } | |
1911 | ||
1912 | ret = get_event_type(content); | |
1913 | free(content); | |
1914 | if (ret < 0) { | |
1915 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1916 | goto end; | |
1917 | } | |
1918 | ||
91744e14 | 1919 | event->type = ret; |
dcf266c0 JG |
1920 | } else if (!strcmp((const char *) node->name, |
1921 | config_element_loglevel_type)) { | |
1922 | xmlChar *content = xmlNodeGetContent(node); | |
1923 | ||
1924 | /* loglevel_type */ | |
1925 | if (!content) { | |
1926 | ret = -LTTNG_ERR_NOMEM; | |
1927 | goto end; | |
1928 | } | |
1929 | ||
1930 | ret = get_loglevel_type(content); | |
1931 | free(content); | |
1932 | if (ret < 0) { | |
1933 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1934 | goto end; | |
1935 | } | |
1936 | ||
91744e14 | 1937 | event->loglevel_type = ret; |
dcf266c0 JG |
1938 | } else if (!strcmp((const char *) node->name, |
1939 | config_element_loglevel)) { | |
1940 | xmlChar *content; | |
1941 | int64_t loglevel = 0; | |
1942 | ||
1943 | /* loglevel */ | |
1944 | content = xmlNodeGetContent(node); | |
1945 | if (!content) { | |
1946 | ret = -LTTNG_ERR_NOMEM; | |
1947 | goto end; | |
1948 | } | |
1949 | ||
1950 | ret = parse_int(content, &loglevel); | |
1951 | free(content); | |
1952 | if (ret) { | |
1953 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1954 | goto end; | |
1955 | } | |
1956 | ||
1957 | if (loglevel > INT_MAX || loglevel < INT_MIN) { | |
1958 | WARN("loglevel out of range."); | |
1959 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1960 | goto end; | |
1961 | } | |
1962 | ||
91744e14 | 1963 | event->loglevel = loglevel; |
dcf266c0 JG |
1964 | } else if (!strcmp((const char *) node->name, |
1965 | config_element_filter)) { | |
1966 | xmlChar *content = | |
1967 | xmlNodeGetContent(node); | |
1968 | ||
1969 | /* filter */ | |
1970 | if (!content) { | |
1971 | ret = -LTTNG_ERR_NOMEM; | |
1972 | goto end; | |
1973 | } | |
1974 | ||
02d8ac3d | 1975 | free(filter_expression); |
dcf266c0 JG |
1976 | filter_expression = strdup((char *) content); |
1977 | free(content); | |
1978 | if (!filter_expression) { | |
1979 | ret = -LTTNG_ERR_NOMEM; | |
1980 | goto end; | |
1981 | } | |
1982 | } else if (!strcmp((const char *) node->name, | |
1983 | config_element_exclusions)) { | |
1984 | xmlNodePtr exclusion_node; | |
1985 | int exclusion_index = 0; | |
1986 | ||
1987 | /* exclusions */ | |
1988 | if (exclusions) { | |
1989 | /* | |
1990 | * Exclusions has already been initialized, | |
1991 | * invalid file. | |
1992 | */ | |
1993 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
1994 | goto end; | |
1995 | } | |
1996 | ||
1997 | exclusion_count = xmlChildElementCount(node); | |
1998 | if (!exclusion_count) { | |
1999 | continue; | |
2000 | } | |
2001 | ||
2002 | exclusions = zmalloc(exclusion_count * sizeof(char *)); | |
2003 | if (!exclusions) { | |
2004 | exclusion_count = 0; | |
2005 | ret = -LTTNG_ERR_NOMEM; | |
2006 | goto end; | |
2007 | } | |
2008 | ||
2009 | for (exclusion_node = xmlFirstElementChild(node); exclusion_node; | |
2010 | exclusion_node = xmlNextElementSibling(exclusion_node)) { | |
2011 | xmlChar *content = | |
2012 | xmlNodeGetContent(exclusion_node); | |
2013 | ||
2014 | if (!content) { | |
2015 | ret = -LTTNG_ERR_NOMEM; | |
2016 | goto end; | |
2017 | } | |
2018 | ||
2019 | exclusions[exclusion_index] = strdup((const char *) content); | |
2020 | free(content); | |
2021 | if (!exclusions[exclusion_index]) { | |
2022 | ret = -LTTNG_ERR_NOMEM; | |
2023 | goto end; | |
2024 | } | |
2025 | exclusion_index++; | |
2026 | } | |
2027 | ||
91744e14 | 2028 | event->exclusion = 1; |
dcf266c0 JG |
2029 | } else if (!strcmp((const char *) node->name, |
2030 | config_element_attributes)) { | |
2031 | xmlNodePtr attribute_node = xmlFirstElementChild(node); | |
2032 | ||
2033 | /* attributes */ | |
2034 | if (!attribute_node) { | |
2035 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2036 | goto end; | |
2037 | } | |
2038 | ||
c1e83fb4 | 2039 | if (!strcmp((const char *) attribute_node->name, |
dcf266c0 JG |
2040 | config_element_probe_attributes)) { |
2041 | xmlNodePtr probe_attribute_node; | |
2042 | ||
2043 | /* probe_attributes */ | |
2044 | for (probe_attribute_node = | |
2045 | xmlFirstElementChild(attribute_node); probe_attribute_node; | |
2046 | probe_attribute_node = xmlNextElementSibling( | |
2047 | probe_attribute_node)) { | |
2048 | ||
2049 | ret = process_probe_attribute_node(probe_attribute_node, | |
91744e14 | 2050 | &event->attr.probe); |
dcf266c0 JG |
2051 | if (ret) { |
2052 | goto end; | |
2053 | } | |
2054 | } | |
c1e83fb4 FD |
2055 | } else if (!strcmp((const char *) attribute_node->name, |
2056 | config_element_function_attributes)) { | |
dcf266c0 JG |
2057 | size_t sym_len; |
2058 | xmlChar *content; | |
2059 | xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node); | |
2060 | ||
2061 | /* function_attributes */ | |
2062 | content = xmlNodeGetContent(symbol_node); | |
2063 | if (!content) { | |
2064 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2065 | goto end; | |
2066 | } | |
2067 | ||
2068 | sym_len = strlen((char *) content); | |
2069 | if (sym_len >= LTTNG_SYMBOL_NAME_LEN) { | |
2070 | WARN("Function name too long."); | |
2071 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2072 | free(content); | |
2073 | goto end; | |
2074 | } | |
2075 | ||
d2e67842 | 2076 | ret = lttng_strncpy( |
91744e14 | 2077 | event->attr.ftrace.symbol_name, |
d2e67842 JG |
2078 | (char *) content, sym_len); |
2079 | if (ret == -1) { | |
2080 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2081 | free(content); | |
2082 | goto end; | |
2083 | } | |
dcf266c0 | 2084 | free(content); |
c1e83fb4 FD |
2085 | } else if (!strcmp((const char *) attribute_node->name, |
2086 | config_element_userspace_probe_tracepoint_attributes)) { | |
2087 | struct lttng_userspace_probe_location *location; | |
2088 | ||
2089 | location = process_userspace_probe_tracepoint_attribute_node(attribute_node); | |
2090 | if (!location) { | |
2091 | WARN("Error processing userspace probe tracepoint attribute"); | |
2092 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2093 | goto end; | |
2094 | } | |
2095 | ret = lttng_event_set_userspace_probe_location( | |
2096 | event, location); | |
2097 | if (ret) { | |
2098 | WARN("Error setting userspace probe location field"); | |
2099 | lttng_userspace_probe_location_destroy( | |
2100 | location); | |
2101 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2102 | goto end; | |
2103 | } | |
2104 | } else if (!strcmp((const char *) attribute_node->name, | |
2105 | config_element_userspace_probe_function_attributes)) { | |
2106 | struct lttng_userspace_probe_location *location; | |
2107 | ||
2108 | location = | |
2109 | process_userspace_probe_function_attribute_node( | |
2110 | attribute_node); | |
2111 | if (!location) { | |
2112 | WARN("Error processing userspace probe function attribute"); | |
2113 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2114 | goto end; | |
2115 | } | |
2116 | ||
2117 | ret = lttng_event_set_userspace_probe_location( | |
2118 | event, location); | |
2119 | if (ret) { | |
2120 | WARN("Error setting userspace probe location field"); | |
2121 | lttng_userspace_probe_location_destroy( | |
2122 | location); | |
2123 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2124 | goto end; | |
2125 | } | |
2126 | } else { | |
2127 | /* Unknown event attribute. */ | |
2128 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2129 | goto end; | |
dcf266c0 JG |
2130 | } |
2131 | } | |
2132 | } | |
2133 | ||
91744e14 FD |
2134 | if ((event->enabled && phase == ENABLE) || phase == CREATION) { |
2135 | ret = lttng_enable_event_with_exclusions(handle, event, channel_name, | |
d7b645e2 JR |
2136 | filter_expression, exclusion_count, exclusions); |
2137 | if (ret < 0) { | |
91744e14 | 2138 | WARN("Enabling event (name:%s) on load failed.", event->name); |
d7b645e2 JR |
2139 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2140 | goto end; | |
2141 | } | |
065321e9 | 2142 | } |
d2e67842 | 2143 | ret = 0; |
dcf266c0 JG |
2144 | end: |
2145 | for (i = 0; i < exclusion_count; i++) { | |
2146 | free(exclusions[i]); | |
2147 | } | |
2148 | ||
b33f872b | 2149 | lttng_event_destroy(event); |
dcf266c0 JG |
2150 | free(exclusions); |
2151 | free(filter_expression); | |
2152 | return ret; | |
2153 | } | |
2154 | ||
2155 | static | |
2156 | int process_events_node(xmlNodePtr events_node, struct lttng_handle *handle, | |
2157 | const char *channel_name) | |
2158 | { | |
2159 | int ret = 0; | |
d7b645e2 | 2160 | struct lttng_event event; |
dcf266c0 JG |
2161 | xmlNodePtr node; |
2162 | ||
2163 | assert(events_node); | |
2164 | assert(handle); | |
2165 | assert(channel_name); | |
2166 | ||
2167 | for (node = xmlFirstElementChild(events_node); node; | |
2168 | node = xmlNextElementSibling(node)) { | |
d7b645e2 | 2169 | ret = process_event_node(node, handle, channel_name, CREATION); |
dcf266c0 JG |
2170 | if (ret) { |
2171 | goto end; | |
2172 | } | |
2173 | } | |
d7b645e2 JR |
2174 | |
2175 | /* | |
2176 | * Disable all events to enable only the necessary events. | |
2177 | * Limitations regarding lttng_disable_events and tuple descriptor | |
2178 | * force this approach. | |
2179 | */ | |
2180 | memset(&event, 0, sizeof(event)); | |
2181 | event.loglevel = -1; | |
2182 | event.type = LTTNG_EVENT_ALL; | |
2183 | ret = lttng_disable_event_ext(handle, &event, channel_name, NULL); | |
2184 | if (ret) { | |
2185 | goto end; | |
2186 | } | |
2187 | ||
2188 | for (node = xmlFirstElementChild(events_node); node; | |
2189 | node = xmlNextElementSibling(node)) { | |
2190 | ret = process_event_node(node, handle, channel_name, ENABLE); | |
2191 | if (ret) { | |
2192 | goto end; | |
2193 | } | |
2194 | } | |
2195 | ||
dcf266c0 JG |
2196 | end: |
2197 | return ret; | |
2198 | } | |
2199 | ||
2200 | static | |
2201 | int process_channel_attr_node(xmlNodePtr attr_node, | |
2202 | struct lttng_channel *channel, xmlNodePtr *contexts_node, | |
2203 | xmlNodePtr *events_node) | |
2204 | { | |
2205 | int ret; | |
2206 | ||
2207 | assert(attr_node); | |
2208 | assert(channel); | |
2209 | assert(contexts_node); | |
2210 | assert(events_node); | |
2211 | ||
2212 | if (!strcmp((const char *) attr_node->name, config_element_name)) { | |
2213 | xmlChar *content; | |
dcf266c0 JG |
2214 | |
2215 | /* name */ | |
2216 | content = xmlNodeGetContent(attr_node); | |
2217 | if (!content) { | |
2218 | ret = -LTTNG_ERR_NOMEM; | |
2219 | goto end; | |
2220 | } | |
2221 | ||
d2e67842 JG |
2222 | ret = lttng_strncpy(channel->name, |
2223 | (const char *) content, | |
2224 | LTTNG_SYMBOL_NAME_LEN); | |
2225 | if (ret == -1) { | |
2226 | WARN("Channel \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2227 | (const char *) content, | |
2228 | strlen((const char *) content), | |
2229 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2230 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2231 | free(content); | |
2232 | goto end; | |
2233 | } | |
dcf266c0 JG |
2234 | free(content); |
2235 | } else if (!strcmp((const char *) attr_node->name, | |
2236 | config_element_enabled)) { | |
2237 | xmlChar *content; | |
2238 | int enabled; | |
2239 | ||
2240 | /* enabled */ | |
2241 | content = xmlNodeGetContent(attr_node); | |
2242 | if (!content) { | |
2243 | ret = -LTTNG_ERR_NOMEM; | |
2244 | goto end; | |
2245 | } | |
2246 | ||
2247 | ret = parse_bool(content, &enabled); | |
2248 | free(content); | |
2249 | if (ret) { | |
2250 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2251 | goto end; | |
2252 | } | |
2253 | ||
2254 | channel->enabled = enabled; | |
2255 | } else if (!strcmp((const char *) attr_node->name, | |
2256 | config_element_overwrite_mode)) { | |
2257 | xmlChar *content; | |
2258 | ||
2259 | /* overwrite_mode */ | |
2260 | content = xmlNodeGetContent(attr_node); | |
2261 | if (!content) { | |
2262 | ret = -LTTNG_ERR_NOMEM; | |
2263 | goto end; | |
2264 | } | |
2265 | ||
2266 | ret = get_overwrite_mode(content); | |
2267 | free(content); | |
2268 | if (ret < 0) { | |
2269 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2270 | goto end; | |
2271 | } | |
2272 | ||
2273 | channel->attr.overwrite = ret; | |
2274 | } else if (!strcmp((const char *) attr_node->name, | |
2275 | config_element_subbuf_size)) { | |
2276 | xmlChar *content; | |
2277 | ||
2278 | /* subbuffer_size */ | |
2279 | content = xmlNodeGetContent(attr_node); | |
2280 | if (!content) { | |
2281 | ret = -LTTNG_ERR_NOMEM; | |
2282 | goto end; | |
2283 | } | |
2284 | ||
2285 | ret = parse_uint(content, &channel->attr.subbuf_size); | |
2286 | free(content); | |
2287 | if (ret) { | |
2288 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2289 | goto end; | |
2290 | } | |
2291 | } else if (!strcmp((const char *) attr_node->name, | |
2292 | config_element_num_subbuf)) { | |
2293 | xmlChar *content; | |
2294 | ||
2295 | /* subbuffer_count */ | |
2296 | content = xmlNodeGetContent(attr_node); | |
2297 | if (!content) { | |
2298 | ret = -LTTNG_ERR_NOMEM; | |
2299 | goto end; | |
2300 | } | |
2301 | ||
2302 | ret = parse_uint(content, &channel->attr.num_subbuf); | |
2303 | free(content); | |
2304 | if (ret) { | |
2305 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2306 | goto end; | |
2307 | } | |
2308 | } else if (!strcmp((const char *) attr_node->name, | |
2309 | config_element_switch_timer_interval)) { | |
2310 | xmlChar *content; | |
2311 | uint64_t switch_timer_interval = 0; | |
2312 | ||
2313 | /* switch_timer_interval */ | |
2314 | content = xmlNodeGetContent(attr_node); | |
2315 | if (!content) { | |
2316 | ret = -LTTNG_ERR_NOMEM; | |
2317 | goto end; | |
2318 | } | |
2319 | ||
2320 | ret = parse_uint(content, &switch_timer_interval); | |
2321 | free(content); | |
2322 | if (ret) { | |
2323 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2324 | goto end; | |
2325 | } | |
2326 | ||
2327 | if (switch_timer_interval > UINT_MAX) { | |
2328 | WARN("switch_timer_interval out of range."); | |
2329 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2330 | goto end; | |
2331 | } | |
2332 | ||
2333 | channel->attr.switch_timer_interval = | |
2334 | switch_timer_interval; | |
2335 | } else if (!strcmp((const char *) attr_node->name, | |
2336 | config_element_read_timer_interval)) { | |
2337 | xmlChar *content; | |
2338 | uint64_t read_timer_interval = 0; | |
2339 | ||
2340 | /* read_timer_interval */ | |
2341 | content = xmlNodeGetContent(attr_node); | |
2342 | if (!content) { | |
2343 | ret = -LTTNG_ERR_NOMEM; | |
2344 | goto end; | |
2345 | } | |
2346 | ||
2347 | ret = parse_uint(content, &read_timer_interval); | |
2348 | free(content); | |
2349 | if (ret) { | |
2350 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2351 | goto end; | |
2352 | } | |
2353 | ||
2354 | if (read_timer_interval > UINT_MAX) { | |
2355 | WARN("read_timer_interval out of range."); | |
2356 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | channel->attr.read_timer_interval = | |
2361 | read_timer_interval; | |
2362 | } else if (!strcmp((const char *) attr_node->name, | |
2363 | config_element_output_type)) { | |
2364 | xmlChar *content; | |
2365 | ||
2366 | /* output_type */ | |
2367 | content = xmlNodeGetContent(attr_node); | |
2368 | if (!content) { | |
2369 | ret = -LTTNG_ERR_NOMEM; | |
2370 | goto end; | |
2371 | } | |
2372 | ||
2373 | ret = get_output_type(content); | |
2374 | free(content); | |
2375 | if (ret < 0) { | |
2376 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2377 | goto end; | |
2378 | } | |
2379 | ||
2380 | channel->attr.output = ret; | |
2381 | } else if (!strcmp((const char *) attr_node->name, | |
2382 | config_element_tracefile_size)) { | |
2383 | xmlChar *content; | |
2384 | ||
2385 | /* tracefile_size */ | |
2386 | content = xmlNodeGetContent(attr_node); | |
2387 | if (!content) { | |
2388 | ret = -LTTNG_ERR_NOMEM; | |
2389 | goto end; | |
2390 | } | |
2391 | ||
2392 | ret = parse_uint(content, &channel->attr.tracefile_size); | |
2393 | free(content); | |
2394 | if (ret) { | |
2395 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2396 | goto end; | |
2397 | } | |
2398 | } else if (!strcmp((const char *) attr_node->name, | |
2399 | config_element_tracefile_count)) { | |
2400 | xmlChar *content; | |
2401 | ||
2402 | /* tracefile_count */ | |
2403 | content = xmlNodeGetContent(attr_node); | |
2404 | if (!content) { | |
2405 | ret = -LTTNG_ERR_NOMEM; | |
2406 | goto end; | |
2407 | } | |
2408 | ||
2409 | ret = parse_uint(content, &channel->attr.tracefile_count); | |
2410 | free(content); | |
2411 | if (ret) { | |
2412 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2413 | goto end; | |
2414 | } | |
2415 | } else if (!strcmp((const char *) attr_node->name, | |
2416 | config_element_live_timer_interval)) { | |
2417 | xmlChar *content; | |
2418 | uint64_t live_timer_interval = 0; | |
2419 | ||
2420 | /* live_timer_interval */ | |
2421 | content = xmlNodeGetContent(attr_node); | |
2422 | if (!content) { | |
2423 | ret = -LTTNG_ERR_NOMEM; | |
2424 | goto end; | |
2425 | } | |
2426 | ||
2427 | ret = parse_uint(content, &live_timer_interval); | |
2428 | free(content); | |
2429 | if (ret) { | |
2430 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2431 | goto end; | |
2432 | } | |
2433 | ||
2434 | if (live_timer_interval > UINT_MAX) { | |
2435 | WARN("live_timer_interval out of range."); | |
2436 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2437 | goto end; | |
2438 | } | |
2439 | ||
2440 | channel->attr.live_timer_interval = | |
2441 | live_timer_interval; | |
4fc2b126 JR |
2442 | } else if (!strcmp((const char *) attr_node->name, |
2443 | config_element_monitor_timer_interval)) { | |
2444 | xmlChar *content; | |
2445 | uint64_t monitor_timer_interval = 0; | |
2446 | ||
2447 | /* monitor_timer_interval */ | |
2448 | content = xmlNodeGetContent(attr_node); | |
2449 | if (!content) { | |
2450 | ret = -LTTNG_ERR_NOMEM; | |
2451 | goto end; | |
2452 | } | |
2453 | ||
2454 | ret = parse_uint(content, &monitor_timer_interval); | |
2455 | free(content); | |
2456 | if (ret) { | |
2457 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2458 | goto end; | |
2459 | } | |
2460 | ||
2461 | ret = lttng_channel_set_monitor_timer_interval(channel, | |
2462 | monitor_timer_interval); | |
2463 | if (ret) { | |
2464 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2465 | goto end; | |
2466 | } | |
275472aa JR |
2467 | } else if (!strcmp((const char *) attr_node->name, |
2468 | config_element_blocking_timeout)) { | |
2469 | xmlChar *content; | |
2470 | int64_t blocking_timeout = 0; | |
2471 | ||
2472 | /* blocking_timeout */ | |
2473 | content = xmlNodeGetContent(attr_node); | |
2474 | if (!content) { | |
2475 | ret = -LTTNG_ERR_NOMEM; | |
2476 | goto end; | |
2477 | } | |
2478 | ||
2479 | ret = parse_int(content, &blocking_timeout); | |
2480 | free(content); | |
2481 | if (ret) { | |
2482 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2483 | goto end; | |
2484 | } | |
2485 | ||
2486 | ret = lttng_channel_set_blocking_timeout(channel, | |
2487 | blocking_timeout); | |
2488 | if (ret) { | |
2489 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2490 | goto end; | |
2491 | } | |
dcf266c0 JG |
2492 | } else if (!strcmp((const char *) attr_node->name, |
2493 | config_element_events)) { | |
2494 | /* events */ | |
2495 | *events_node = attr_node; | |
2496 | } else { | |
2497 | /* contexts */ | |
2498 | *contexts_node = attr_node; | |
2499 | } | |
2500 | ret = 0; | |
2501 | end: | |
2502 | return ret; | |
2503 | } | |
2504 | ||
2505 | static | |
2506 | int process_context_node(xmlNodePtr context_node, | |
2507 | struct lttng_handle *handle, const char *channel_name) | |
2508 | { | |
2509 | int ret; | |
2510 | struct lttng_event_context context; | |
2511 | xmlNodePtr context_child_node = xmlFirstElementChild(context_node); | |
2512 | ||
2513 | assert(handle); | |
2514 | assert(channel_name); | |
2515 | ||
2516 | if (!context_child_node) { | |
2517 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2518 | goto end; | |
2519 | } | |
2520 | ||
2521 | memset(&context, 0, sizeof(context)); | |
2522 | ||
2523 | if (!strcmp((const char *) context_child_node->name, | |
2524 | config_element_type)) { | |
2525 | /* type */ | |
2526 | xmlChar *content = xmlNodeGetContent(context_child_node); | |
045fc617 | 2527 | |
dcf266c0 JG |
2528 | if (!content) { |
2529 | ret = -LTTNG_ERR_NOMEM; | |
2530 | goto end; | |
2531 | } | |
2532 | ||
2533 | ret = get_context_type(content); | |
2534 | free(content); | |
2535 | if (ret < 0) { | |
2536 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2537 | goto end; | |
2538 | } | |
2539 | ||
2540 | context.ctx = ret; | |
045fc617 JG |
2541 | } else if (!strcmp((const char *) context_child_node->name, |
2542 | config_element_context_perf)) { | |
2543 | /* perf */ | |
dcf266c0 JG |
2544 | xmlNodePtr perf_attr_node; |
2545 | ||
14ce5bd8 JG |
2546 | context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ? |
2547 | LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER : | |
2548 | LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER; | |
dcf266c0 JG |
2549 | for (perf_attr_node = xmlFirstElementChild(context_child_node); |
2550 | perf_attr_node; perf_attr_node = | |
2551 | xmlNextElementSibling(perf_attr_node)) { | |
2552 | if (!strcmp((const char *) perf_attr_node->name, | |
2553 | config_element_type)) { | |
2554 | xmlChar *content; | |
2555 | uint64_t type = 0; | |
2556 | ||
2557 | /* type */ | |
2558 | content = xmlNodeGetContent(perf_attr_node); | |
2559 | if (!content) { | |
2560 | ret = -LTTNG_ERR_NOMEM; | |
2561 | goto end; | |
2562 | } | |
2563 | ||
2564 | ret = parse_uint(content, &type); | |
2565 | free(content); | |
2566 | if (ret) { | |
2567 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2568 | goto end; | |
2569 | } | |
2570 | ||
2571 | if (type > UINT32_MAX) { | |
2572 | WARN("perf context type out of range."); | |
2573 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2574 | goto end; | |
2575 | } | |
2576 | ||
2577 | context.u.perf_counter.type = type; | |
2578 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2579 | config_element_config)) { | |
2580 | xmlChar *content; | |
2581 | uint64_t config = 0; | |
2582 | ||
2583 | /* config */ | |
2584 | content = xmlNodeGetContent(perf_attr_node); | |
2585 | if (!content) { | |
2586 | ret = -LTTNG_ERR_NOMEM; | |
2587 | goto end; | |
2588 | } | |
2589 | ||
2590 | ret = parse_uint(content, &config); | |
2591 | free(content); | |
2592 | if (ret) { | |
2593 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2594 | goto end; | |
2595 | } | |
2596 | ||
2597 | context.u.perf_counter.config = config; | |
2598 | } else if (!strcmp((const char *) perf_attr_node->name, | |
2599 | config_element_name)) { | |
2600 | xmlChar *content; | |
dcf266c0 JG |
2601 | |
2602 | /* name */ | |
2603 | content = xmlNodeGetContent(perf_attr_node); | |
2604 | if (!content) { | |
2605 | ret = -LTTNG_ERR_NOMEM; | |
2606 | goto end; | |
2607 | } | |
2608 | ||
d2e67842 JG |
2609 | ret = lttng_strncpy(context.u.perf_counter.name, |
2610 | (const char *) content, | |
2611 | LTTNG_SYMBOL_NAME_LEN); | |
2612 | if (ret == -1) { | |
2613 | WARN("Perf counter \"%s\"'s name length (%zu) exceeds the maximal permitted length (%d) in session configuration", | |
2614 | (const char *) content, | |
2615 | strlen((const char *) content), | |
2616 | LTTNG_SYMBOL_NAME_LEN); | |
dcf266c0 JG |
2617 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
2618 | free(content); | |
2619 | goto end; | |
2620 | } | |
dcf266c0 JG |
2621 | free(content); |
2622 | } | |
2623 | } | |
045fc617 JG |
2624 | } else if (!strcmp((const char *) context_child_node->name, |
2625 | config_element_context_app)) { | |
2626 | /* application context */ | |
2627 | xmlNodePtr app_ctx_node; | |
2628 | ||
2629 | context.ctx = LTTNG_EVENT_CONTEXT_APP_CONTEXT; | |
2630 | for (app_ctx_node = xmlFirstElementChild(context_child_node); | |
2631 | app_ctx_node; app_ctx_node = | |
2632 | xmlNextElementSibling(app_ctx_node)) { | |
2633 | xmlChar *content; | |
2634 | char **target = strcmp( | |
2635 | (const char *) app_ctx_node->name, | |
2636 | config_element_context_app_provider_name) == 0 ? | |
2637 | &context.u.app_ctx.provider_name : | |
2638 | &context.u.app_ctx.ctx_name; | |
2639 | ||
2640 | content = xmlNodeGetContent(app_ctx_node); | |
2641 | if (!content) { | |
2642 | ret = -LTTNG_ERR_NOMEM; | |
2643 | goto end; | |
2644 | } | |
2645 | ||
2646 | *target = (char *) content; | |
2647 | } | |
2648 | } else { | |
2649 | /* Unrecognized context type */ | |
2650 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2651 | goto end; | |
dcf266c0 JG |
2652 | } |
2653 | ||
2654 | ret = lttng_add_context(handle, &context, NULL, channel_name); | |
045fc617 JG |
2655 | if (context.ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { |
2656 | free(context.u.app_ctx.provider_name); | |
2657 | free(context.u.app_ctx.ctx_name); | |
2658 | } | |
dcf266c0 JG |
2659 | end: |
2660 | return ret; | |
2661 | } | |
2662 | ||
2663 | static | |
2664 | int process_contexts_node(xmlNodePtr contexts_node, | |
2665 | struct lttng_handle *handle, const char *channel_name) | |
2666 | { | |
2667 | int ret = 0; | |
2668 | xmlNodePtr context_node; | |
2669 | ||
2670 | for (context_node = xmlFirstElementChild(contexts_node); context_node; | |
2671 | context_node = xmlNextElementSibling(context_node)) { | |
2672 | ret = process_context_node(context_node, handle, channel_name); | |
2673 | if (ret) { | |
2674 | goto end; | |
2675 | } | |
2676 | } | |
2677 | end: | |
2678 | return ret; | |
2679 | } | |
2680 | ||
159b042f | 2681 | static int get_tracker_elements(enum lttng_process_attr process_attr, |
55c9e7ca | 2682 | const char **element_id_tracker, |
159b042f JG |
2683 | const char **element_value_type, |
2684 | const char **element_value, | |
2685 | const char **element_value_alias, | |
55c9e7ca JR |
2686 | const char **element_name) |
2687 | { | |
2688 | int ret = 0; | |
2689 | ||
159b042f JG |
2690 | switch (process_attr) { |
2691 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2692 | *element_id_tracker = config_element_process_attr_tracker_pid; | |
2693 | *element_value_type = config_element_process_attr_pid_value; | |
2694 | *element_value = config_element_process_attr_id; | |
2695 | *element_value_alias = config_element_process_attr_id; | |
55c9e7ca JR |
2696 | *element_name = NULL; |
2697 | break; | |
159b042f JG |
2698 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2699 | *element_id_tracker = config_element_process_attr_tracker_vpid; | |
2700 | *element_value_type = config_element_process_attr_vpid_value; | |
2701 | *element_value = config_element_process_attr_id; | |
2702 | *element_value_alias = NULL; | |
55c9e7ca JR |
2703 | *element_name = NULL; |
2704 | break; | |
159b042f JG |
2705 | case LTTNG_PROCESS_ATTR_USER_ID: |
2706 | *element_id_tracker = config_element_process_attr_tracker_uid; | |
2707 | *element_value_type = config_element_process_attr_uid_value; | |
2708 | *element_value = config_element_process_attr_id; | |
2709 | *element_value_alias = NULL; | |
55c9e7ca JR |
2710 | *element_name = config_element_name; |
2711 | break; | |
159b042f JG |
2712 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2713 | *element_id_tracker = config_element_process_attr_tracker_vuid; | |
2714 | *element_value_type = config_element_process_attr_vuid_value; | |
2715 | *element_value = config_element_process_attr_id; | |
2716 | *element_value_alias = NULL; | |
55c9e7ca JR |
2717 | *element_name = config_element_name; |
2718 | break; | |
159b042f JG |
2719 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2720 | *element_id_tracker = config_element_process_attr_tracker_gid; | |
2721 | *element_value_type = config_element_process_attr_gid_value; | |
2722 | *element_value = config_element_process_attr_id; | |
2723 | *element_value_alias = NULL; | |
55c9e7ca JR |
2724 | *element_name = config_element_name; |
2725 | break; | |
159b042f JG |
2726 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2727 | *element_id_tracker = config_element_process_attr_tracker_vgid; | |
2728 | *element_value_type = config_element_process_attr_vgid_value; | |
2729 | *element_value = config_element_process_attr_id; | |
2730 | *element_value_alias = NULL; | |
55c9e7ca JR |
2731 | *element_name = config_element_name; |
2732 | break; | |
2733 | default: | |
2734 | ret = LTTNG_ERR_INVALID; | |
2735 | } | |
2736 | return ret; | |
2737 | } | |
2738 | ||
f7af9a72 JG |
2739 | static int process_legacy_pid_tracker_node( |
2740 | xmlNodePtr trackers_node, struct lttng_handle *handle) | |
2741 | { | |
2742 | int ret = 0, child_count; | |
2743 | xmlNodePtr targets_node = NULL; | |
2744 | xmlNodePtr node; | |
2745 | const char *element_id_tracker; | |
2746 | const char *element_target_id; | |
2747 | const char *element_id; | |
2748 | const char *element_id_alias; | |
2749 | const char *element_name; | |
2750 | enum lttng_error_code tracker_handle_ret_code; | |
2751 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2752 | enum lttng_process_attr_tracker_handle_status status; | |
2753 | const enum lttng_process_attr process_attr = | |
2754 | handle->domain.type == LTTNG_DOMAIN_UST ? | |
2755 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID : | |
2756 | LTTNG_PROCESS_ATTR_PROCESS_ID; | |
2757 | ||
2758 | assert(handle); | |
2759 | ||
2760 | tracker_handle_ret_code = lttng_session_get_tracker_handle( | |
2761 | handle->session_name, handle->domain.type, | |
2762 | process_attr, | |
2763 | &tracker_handle); | |
2764 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2765 | ret = LTTNG_ERR_INVALID; | |
2766 | goto end; | |
2767 | } | |
2768 | ||
2769 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
2770 | &element_target_id, &element_id, &element_id_alias, | |
2771 | &element_name); | |
2772 | if (ret) { | |
2773 | goto end; | |
2774 | } | |
2775 | ||
2776 | /* Get the targets node */ | |
2777 | for (node = xmlFirstElementChild(trackers_node); node; | |
2778 | node = xmlNextElementSibling(node)) { | |
2779 | if (!strcmp((const char *) node->name, | |
2780 | config_element_tracker_targets_legacy)) { | |
2781 | targets_node = node; | |
2782 | break; | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | if (!targets_node) { | |
2787 | ret = LTTNG_ERR_INVALID; | |
2788 | goto end; | |
2789 | } | |
2790 | ||
2791 | /* Go through all id target node */ | |
2792 | child_count = xmlChildElementCount(targets_node); | |
2793 | status = lttng_process_attr_tracker_handle_set_tracking_policy( | |
2794 | tracker_handle, | |
2795 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2796 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2797 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2798 | ret = LTTNG_ERR_UNK; | |
2799 | goto end; | |
2800 | } | |
2801 | ||
2802 | /* Add all tracked values. */ | |
2803 | for (node = xmlFirstElementChild(targets_node); node; | |
2804 | node = xmlNextElementSibling(node)) { | |
2805 | xmlNodePtr pid_target_node = node; | |
2806 | ||
2807 | /* get pid_target node and track it */ | |
2808 | for (node = xmlFirstElementChild(pid_target_node); node; | |
2809 | node = xmlNextElementSibling(node)) { | |
2810 | if (!strcmp((const char *) node->name, | |
2811 | config_element_tracker_pid_legacy)) { | |
2812 | int64_t id; | |
2813 | xmlChar *content = xmlNodeGetContent(node); | |
2814 | ||
2815 | if (!content) { | |
2816 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2817 | goto end; | |
2818 | } | |
2819 | ||
2820 | ret = parse_int(content, &id); | |
2821 | free(content); | |
2822 | if (ret) { | |
2823 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2824 | goto end; | |
2825 | } | |
2826 | ||
2827 | switch (process_attr) { | |
2828 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2829 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2830 | tracker_handle, | |
2831 | (pid_t) id); | |
2832 | break; | |
2833 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2834 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2835 | tracker_handle, | |
2836 | (pid_t) id); | |
2837 | break; | |
2838 | default: | |
2839 | ret = LTTNG_ERR_INVALID; | |
2840 | goto end; | |
2841 | } | |
2842 | } | |
2843 | switch (status) { | |
2844 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
2845 | continue; | |
2846 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
2847 | ret = LTTNG_ERR_INVALID; | |
2848 | break; | |
2849 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
2850 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
2851 | break; | |
2852 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
2853 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
2854 | break; | |
2855 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
2856 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
2857 | default: | |
2858 | ret = LTTNG_ERR_UNK; | |
2859 | goto end; | |
2860 | } | |
2861 | } | |
2862 | node = pid_target_node; | |
2863 | } | |
2864 | ||
2865 | end: | |
2866 | lttng_process_attr_tracker_handle_destroy(tracker_handle); | |
2867 | return ret; | |
2868 | } | |
2869 | ||
55c9e7ca JR |
2870 | static int process_id_tracker_node(xmlNodePtr id_tracker_node, |
2871 | struct lttng_handle *handle, | |
159b042f | 2872 | enum lttng_process_attr process_attr) |
847a5916 | 2873 | { |
159b042f | 2874 | int ret = 0, child_count; |
f7af9a72 | 2875 | xmlNodePtr values_node = NULL; |
847a5916 | 2876 | xmlNodePtr node; |
55c9e7ca JR |
2877 | const char *element_id_tracker; |
2878 | const char *element_target_id; | |
2879 | const char *element_id; | |
2880 | const char *element_id_alias; | |
2881 | const char *element_name; | |
159b042f JG |
2882 | enum lttng_error_code tracker_handle_ret_code; |
2883 | struct lttng_process_attr_tracker_handle *tracker_handle = NULL; | |
2884 | enum lttng_process_attr_tracker_handle_status status; | |
847a5916 JR |
2885 | |
2886 | assert(handle); | |
55c9e7ca JR |
2887 | assert(id_tracker_node); |
2888 | ||
159b042f JG |
2889 | tracker_handle_ret_code = lttng_session_get_tracker_handle( |
2890 | handle->session_name, handle->domain.type, process_attr, | |
2891 | &tracker_handle); | |
2892 | if (tracker_handle_ret_code != LTTNG_OK) { | |
2893 | ret = LTTNG_ERR_INVALID; | |
2894 | goto end; | |
2895 | } | |
2896 | ||
2897 | ret = get_tracker_elements(process_attr, &element_id_tracker, | |
55c9e7ca JR |
2898 | &element_target_id, &element_id, &element_id_alias, |
2899 | &element_name); | |
2900 | if (ret) { | |
159b042f | 2901 | goto end; |
55c9e7ca JR |
2902 | } |
2903 | ||
f7af9a72 | 2904 | /* get the values node */ |
55c9e7ca JR |
2905 | for (node = xmlFirstElementChild(id_tracker_node); node; |
2906 | node = xmlNextElementSibling(node)) { | |
847a5916 | 2907 | if (!strcmp((const char *) node->name, |
159b042f | 2908 | config_element_process_attr_values)) { |
f7af9a72 | 2909 | values_node = node; |
847a5916 JR |
2910 | break; |
2911 | } | |
2912 | } | |
2913 | ||
f7af9a72 | 2914 | if (!values_node) { |
847a5916 JR |
2915 | ret = LTTNG_ERR_INVALID; |
2916 | goto end; | |
2917 | } | |
2918 | ||
55c9e7ca | 2919 | /* Go through all id target node */ |
f7af9a72 | 2920 | child_count = xmlChildElementCount(values_node); |
159b042f JG |
2921 | status = lttng_process_attr_tracker_handle_set_tracking_policy( |
2922 | tracker_handle, | |
2923 | child_count == 0 ? LTTNG_TRACKING_POLICY_EXCLUDE_ALL : | |
2924 | LTTNG_TRACKING_POLICY_INCLUDE_SET); | |
2925 | if (status != LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK) { | |
2926 | ret = LTTNG_ERR_UNK; | |
2927 | goto end; | |
847a5916 | 2928 | } |
159b042f JG |
2929 | |
2930 | /* Add all tracked values. */ | |
f7af9a72 | 2931 | for (node = xmlFirstElementChild(values_node); node; |
847a5916 | 2932 | node = xmlNextElementSibling(node)) { |
55c9e7ca | 2933 | xmlNodePtr id_target_node = node; |
847a5916 | 2934 | |
55c9e7ca JR |
2935 | /* get id node and track it */ |
2936 | for (node = xmlFirstElementChild(id_target_node); node; | |
2937 | node = xmlNextElementSibling(node)) { | |
2938 | if (!strcmp((const char *) node->name, element_id) || | |
2939 | (element_id_alias && | |
2940 | !strcmp((const char *) node->name, | |
2941 | element_id_alias))) { | |
2942 | int64_t id; | |
159b042f | 2943 | xmlChar *content = xmlNodeGetContent(node); |
847a5916 | 2944 | |
847a5916 JR |
2945 | if (!content) { |
2946 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2947 | goto end; | |
2948 | } | |
2949 | ||
55c9e7ca | 2950 | ret = parse_int(content, &id); |
847a5916 JR |
2951 | free(content); |
2952 | if (ret) { | |
2953 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2954 | goto end; | |
2955 | } | |
2956 | ||
159b042f JG |
2957 | switch (process_attr) { |
2958 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2959 | status = lttng_process_attr_process_id_tracker_handle_add_pid( | |
2960 | tracker_handle, | |
2961 | (pid_t) id); | |
2962 | break; | |
2963 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2964 | status = lttng_process_attr_virtual_process_id_tracker_handle_add_pid( | |
2965 | tracker_handle, | |
2966 | (pid_t) id); | |
2967 | break; | |
2968 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2969 | status = lttng_process_attr_user_id_tracker_handle_add_uid( | |
2970 | tracker_handle, | |
2971 | (uid_t) id); | |
2972 | break; | |
2973 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2974 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_uid( | |
2975 | tracker_handle, | |
2976 | (uid_t) id); | |
2977 | break; | |
2978 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2979 | status = lttng_process_attr_group_id_tracker_handle_add_gid( | |
2980 | tracker_handle, | |
2981 | (gid_t) id); | |
2982 | break; | |
2983 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2984 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_gid( | |
2985 | tracker_handle, | |
2986 | (gid_t) id); | |
2987 | break; | |
2988 | default: | |
2989 | ret = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
2990 | goto end; |
2991 | } | |
159b042f JG |
2992 | } else if (element_name && |
2993 | !strcmp((const char *) node->name, | |
2994 | element_name)) { | |
2995 | xmlChar *content = xmlNodeGetContent(node); | |
55c9e7ca | 2996 | |
55c9e7ca JR |
2997 | if (!content) { |
2998 | ret = LTTNG_ERR_LOAD_INVALID_CONFIG; | |
2999 | goto end; | |
3000 | } | |
2d97a006 | 3001 | |
159b042f JG |
3002 | switch (process_attr) { |
3003 | case LTTNG_PROCESS_ATTR_USER_ID: | |
3004 | status = lttng_process_attr_user_id_tracker_handle_add_user_name( | |
3005 | tracker_handle, | |
3006 | (const char *) content); | |
3007 | break; | |
3008 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
3009 | status = lttng_process_attr_virtual_user_id_tracker_handle_add_user_name( | |
3010 | tracker_handle, | |
3011 | (const char *) content); | |
3012 | break; | |
3013 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
3014 | status = lttng_process_attr_group_id_tracker_handle_add_group_name( | |
3015 | tracker_handle, | |
3016 | (const char *) content); | |
3017 | break; | |
3018 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
3019 | status = lttng_process_attr_virtual_group_id_tracker_handle_add_group_name( | |
3020 | tracker_handle, | |
3021 | (const char *) content); | |
3022 | break; | |
3023 | default: | |
3024 | free(content); | |
3025 | ret = LTTNG_ERR_INVALID; | |
2d97a006 JR |
3026 | goto end; |
3027 | } | |
55c9e7ca | 3028 | free(content); |
159b042f JG |
3029 | } |
3030 | switch (status) { | |
3031 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_OK: | |
3032 | continue; | |
3033 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_INVALID: | |
3034 | ret = LTTNG_ERR_INVALID; | |
3035 | break; | |
3036 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_EXISTS: | |
3037 | ret = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
3038 | break; | |
3039 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_MISSING: | |
3040 | ret = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
3041 | break; | |
3042 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_ERROR: | |
3043 | case LTTNG_PROCESS_ATTR_TRACKER_HANDLE_STATUS_COMMUNICATION_ERROR: | |
3044 | default: | |
3045 | ret = LTTNG_ERR_UNK; | |
3046 | goto end; | |
847a5916 JR |
3047 | } |
3048 | } | |
55c9e7ca | 3049 | node = id_target_node; |
847a5916 JR |
3050 | } |
3051 | ||
3052 | end: | |
159b042f | 3053 | lttng_process_attr_tracker_handle_destroy(tracker_handle); |
847a5916 JR |
3054 | return ret; |
3055 | } | |
3056 | ||
dcf266c0 JG |
3057 | static |
3058 | int process_domain_node(xmlNodePtr domain_node, const char *session_name) | |
3059 | { | |
3060 | int ret; | |
3061 | struct lttng_domain domain = { 0 }; | |
3062 | struct lttng_handle *handle = NULL; | |
4fc2b126 | 3063 | struct lttng_channel *channel = NULL; |
dcf266c0 | 3064 | xmlNodePtr channels_node = NULL; |
847a5916 JR |
3065 | xmlNodePtr trackers_node = NULL; |
3066 | xmlNodePtr pid_tracker_node = NULL; | |
55c9e7ca JR |
3067 | xmlNodePtr vpid_tracker_node = NULL; |
3068 | xmlNodePtr uid_tracker_node = NULL; | |
3069 | xmlNodePtr vuid_tracker_node = NULL; | |
3070 | xmlNodePtr gid_tracker_node = NULL; | |
3071 | xmlNodePtr vgid_tracker_node = NULL; | |
dcf266c0 JG |
3072 | xmlNodePtr node; |
3073 | ||
3074 | assert(session_name); | |
3075 | ||
3076 | ret = init_domain(domain_node, &domain); | |
3077 | if (ret) { | |
3078 | goto end; | |
3079 | } | |
3080 | ||
3081 | handle = lttng_create_handle(session_name, &domain); | |
3082 | if (!handle) { | |
3083 | ret = -LTTNG_ERR_NOMEM; | |
3084 | goto end; | |
3085 | } | |
3086 | ||
3087 | /* get the channels node */ | |
3088 | for (node = xmlFirstElementChild(domain_node); node; | |
3089 | node = xmlNextElementSibling(node)) { | |
3090 | if (!strcmp((const char *) node->name, | |
3091 | config_element_channels)) { | |
3092 | channels_node = node; | |
3093 | break; | |
3094 | } | |
3095 | } | |
3096 | ||
3097 | if (!channels_node) { | |
3098 | goto end; | |
3099 | } | |
3100 | ||
3101 | /* create all channels */ | |
3102 | for (node = xmlFirstElementChild(channels_node); node; | |
3103 | node = xmlNextElementSibling(node)) { | |
36d1687c | 3104 | const enum lttng_domain_type original_domain = domain.type; |
dcf266c0 JG |
3105 | xmlNodePtr contexts_node = NULL; |
3106 | xmlNodePtr events_node = NULL; | |
3107 | xmlNodePtr channel_attr_node; | |
3108 | ||
36d1687c JG |
3109 | /* |
3110 | * Channels of the "agent" types cannot be created directly. | |
3111 | * They are meant to be created implicitly through the | |
3112 | * activation of events in their domain. However, a user | |
3113 | * can override the default channel configuration attributes | |
3114 | * by creating the underlying UST channel _before_ enabling | |
3115 | * an agent domain event. | |
3116 | * | |
3117 | * Hence, the channel's type is substituted before the creation | |
3118 | * and restored by the time the events are created. | |
3119 | */ | |
3120 | switch (domain.type) { | |
3121 | case LTTNG_DOMAIN_JUL: | |
3122 | case LTTNG_DOMAIN_LOG4J: | |
3123 | case LTTNG_DOMAIN_PYTHON: | |
3124 | domain.type = LTTNG_DOMAIN_UST; | |
3125 | default: | |
3126 | break; | |
3127 | } | |
3128 | ||
4fc2b126 JR |
3129 | channel = lttng_channel_create(&domain); |
3130 | if (!channel) { | |
3131 | ret = -1; | |
3132 | goto end; | |
3133 | } | |
dcf266c0 JG |
3134 | |
3135 | for (channel_attr_node = xmlFirstElementChild(node); | |
3136 | channel_attr_node; channel_attr_node = | |
3137 | xmlNextElementSibling(channel_attr_node)) { | |
3138 | ret = process_channel_attr_node(channel_attr_node, | |
4fc2b126 | 3139 | channel, &contexts_node, &events_node); |
dcf266c0 JG |
3140 | if (ret) { |
3141 | goto end; | |
3142 | } | |
3143 | } | |
3144 | ||
4fc2b126 | 3145 | ret = lttng_enable_channel(handle, channel); |
dcf266c0 JG |
3146 | if (ret < 0) { |
3147 | goto end; | |
3148 | } | |
3149 | ||
36d1687c JG |
3150 | /* Restore the original channel domain. */ |
3151 | domain.type = original_domain; | |
3152 | ||
4fc2b126 | 3153 | ret = process_events_node(events_node, handle, channel->name); |
dcf266c0 JG |
3154 | if (ret) { |
3155 | goto end; | |
3156 | } | |
3157 | ||
3158 | ret = process_contexts_node(contexts_node, handle, | |
4fc2b126 | 3159 | channel->name); |
dcf266c0 JG |
3160 | if (ret) { |
3161 | goto end; | |
3162 | } | |
4fc2b126 JR |
3163 | |
3164 | lttng_channel_destroy(channel); | |
dcf266c0 | 3165 | } |
4fc2b126 | 3166 | channel = NULL; |
847a5916 JR |
3167 | |
3168 | /* get the trackers node */ | |
3169 | for (node = xmlFirstElementChild(domain_node); node; | |
3170 | node = xmlNextElementSibling(node)) { | |
3171 | if (!strcmp((const char *) node->name, | |
f7af9a72 JG |
3172 | config_element_process_attr_trackers) || |
3173 | !strcmp((const char *) node->name, | |
3174 | config_element_trackers_legacy)) { | |
3175 | if (trackers_node) { | |
3176 | ERR("Only one instance of `%s` or `%s` is allowed in a session configuration", | |
3177 | config_element_process_attr_trackers, | |
3178 | config_element_trackers_legacy); | |
3179 | ret = -1; | |
3180 | goto end; | |
3181 | } | |
847a5916 JR |
3182 | trackers_node = node; |
3183 | break; | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | if (!trackers_node) { | |
3188 | goto end; | |
3189 | } | |
3190 | ||
3191 | for (node = xmlFirstElementChild(trackers_node); node; | |
3192 | node = xmlNextElementSibling(node)) { | |
55c9e7ca | 3193 | if (!strcmp((const char *) node->name, |
159b042f | 3194 | config_element_process_attr_tracker_pid)) { |
847a5916 | 3195 | pid_tracker_node = node; |
55c9e7ca | 3196 | ret = process_id_tracker_node(pid_tracker_node, handle, |
159b042f | 3197 | LTTNG_PROCESS_ATTR_PROCESS_ID); |
55c9e7ca JR |
3198 | if (ret) { |
3199 | goto end; | |
3200 | } | |
3201 | } | |
3202 | if (!strcmp((const char *) node->name, | |
159b042f | 3203 | config_element_process_attr_tracker_vpid)) { |
55c9e7ca JR |
3204 | vpid_tracker_node = node; |
3205 | ret = process_id_tracker_node(vpid_tracker_node, handle, | |
159b042f | 3206 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); |
55c9e7ca JR |
3207 | if (ret) { |
3208 | goto end; | |
3209 | } | |
3210 | } | |
3211 | if (!strcmp((const char *) node->name, | |
159b042f | 3212 | config_element_process_attr_tracker_uid)) { |
55c9e7ca JR |
3213 | uid_tracker_node = node; |
3214 | ret = process_id_tracker_node(uid_tracker_node, handle, | |
159b042f | 3215 | LTTNG_PROCESS_ATTR_USER_ID); |
55c9e7ca JR |
3216 | if (ret) { |
3217 | goto end; | |
3218 | } | |
3219 | } | |
3220 | if (!strcmp((const char *) node->name, | |
159b042f | 3221 | config_element_process_attr_tracker_vuid)) { |
55c9e7ca JR |
3222 | vuid_tracker_node = node; |
3223 | ret = process_id_tracker_node(vuid_tracker_node, handle, | |
159b042f | 3224 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); |
55c9e7ca JR |
3225 | if (ret) { |
3226 | goto end; | |
3227 | } | |
3228 | } | |
3229 | if (!strcmp((const char *) node->name, | |
159b042f | 3230 | config_element_process_attr_tracker_gid)) { |
55c9e7ca JR |
3231 | gid_tracker_node = node; |
3232 | ret = process_id_tracker_node(gid_tracker_node, handle, | |
159b042f | 3233 | LTTNG_PROCESS_ATTR_GROUP_ID); |
55c9e7ca JR |
3234 | if (ret) { |
3235 | goto end; | |
3236 | } | |
3237 | } | |
3238 | if (!strcmp((const char *) node->name, | |
159b042f | 3239 | config_element_process_attr_tracker_vgid)) { |
55c9e7ca JR |
3240 | vgid_tracker_node = node; |
3241 | ret = process_id_tracker_node(vgid_tracker_node, handle, | |
159b042f | 3242 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); |
847a5916 JR |
3243 | if (ret) { |
3244 | goto end; | |
3245 | } | |
3246 | } | |
f7af9a72 JG |
3247 | if (!strcmp((const char *) node->name, |
3248 | config_element_pid_tracker_legacy)) { | |
3249 | ret = process_legacy_pid_tracker_node(node, handle); | |
3250 | if (ret) { | |
3251 | goto end; | |
3252 | } | |
3253 | } | |
847a5916 JR |
3254 | } |
3255 | ||
dcf266c0 | 3256 | end: |
4fc2b126 | 3257 | lttng_channel_destroy(channel); |
dcf266c0 JG |
3258 | lttng_destroy_handle(handle); |
3259 | return ret; | |
3260 | } | |
3261 | ||
66ea93b1 JG |
3262 | static |
3263 | int add_periodic_rotation(const char *name, uint64_t time_us) | |
3264 | { | |
3265 | int ret; | |
3266 | enum lttng_rotation_status status; | |
3267 | struct lttng_rotation_schedule *periodic = | |
3268 | lttng_rotation_schedule_periodic_create(); | |
3269 | ||
3270 | if (!periodic) { | |
3271 | ret = -LTTNG_ERR_NOMEM; | |
3272 | goto error; | |
3273 | } | |
3274 | ||
3275 | status = lttng_rotation_schedule_periodic_set_period(periodic, | |
3276 | time_us); | |
3277 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3278 | ret = -LTTNG_ERR_INVALID; | |
3279 | goto error; | |
3280 | } | |
3281 | ||
3282 | status = lttng_session_add_rotation_schedule(name, periodic); | |
3283 | switch (status) { | |
3284 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3285 | ret = 0; |
66ea93b1 JG |
3286 | break; |
3287 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3288 | case LTTNG_ROTATION_STATUS_INVALID: | |
3289 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3290 | break; | |
3291 | default: | |
3292 | ret = -LTTNG_ERR_UNK; | |
3293 | break; | |
3294 | } | |
3295 | error: | |
3296 | lttng_rotation_schedule_destroy(periodic); | |
3297 | return ret; | |
3298 | } | |
3299 | ||
3300 | static | |
3301 | int add_size_rotation(const char *name, uint64_t size_bytes) | |
3302 | { | |
3303 | int ret; | |
3304 | enum lttng_rotation_status status; | |
3305 | struct lttng_rotation_schedule *size = | |
3306 | lttng_rotation_schedule_size_threshold_create(); | |
3307 | ||
3308 | if (!size) { | |
3309 | ret = -LTTNG_ERR_NOMEM; | |
3310 | goto error; | |
3311 | } | |
3312 | ||
3313 | status = lttng_rotation_schedule_size_threshold_set_threshold(size, | |
3314 | size_bytes); | |
3315 | if (status != LTTNG_ROTATION_STATUS_OK) { | |
3316 | ret = -LTTNG_ERR_INVALID; | |
3317 | goto error; | |
3318 | } | |
3319 | ||
3320 | status = lttng_session_add_rotation_schedule(name, size); | |
3321 | switch (status) { | |
3322 | case LTTNG_ROTATION_STATUS_OK: | |
ce6176f2 | 3323 | ret = 0; |
66ea93b1 JG |
3324 | break; |
3325 | case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET: | |
3326 | case LTTNG_ROTATION_STATUS_INVALID: | |
3327 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3328 | break; | |
3329 | default: | |
3330 | ret = -LTTNG_ERR_UNK; | |
3331 | break; | |
3332 | } | |
3333 | error: | |
3334 | lttng_rotation_schedule_destroy(size); | |
3335 | return ret; | |
3336 | } | |
3337 | ||
ce6176f2 JG |
3338 | static |
3339 | int process_session_rotation_schedules_node( | |
3340 | xmlNodePtr schedules_node, | |
3341 | uint64_t *rotation_timer_interval, | |
3342 | uint64_t *rotation_size) | |
3343 | { | |
3344 | int ret = 0; | |
3345 | xmlNodePtr child; | |
3346 | ||
3347 | for (child = xmlFirstElementChild(schedules_node); | |
3348 | child; | |
3349 | child = xmlNextElementSibling(child)) { | |
3350 | if (!strcmp((const char *) child->name, | |
3351 | config_element_rotation_schedule_periodic)) { | |
3352 | xmlChar *content; | |
3353 | xmlNodePtr time_us_node; | |
3354 | ||
3355 | /* periodic rotation schedule */ | |
3356 | time_us_node = xmlFirstElementChild(child); | |
3357 | if (!time_us_node || | |
3358 | strcmp((const char *) time_us_node->name, | |
3359 | config_element_rotation_schedule_periodic_time_us)) { | |
3360 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3361 | goto end; | |
3362 | } | |
3363 | ||
3364 | /* time_us child */ | |
3365 | content = xmlNodeGetContent(time_us_node); | |
3366 | if (!content) { | |
3367 | ret = -LTTNG_ERR_NOMEM; | |
3368 | goto end; | |
3369 | } | |
3370 | ret = parse_uint(content, rotation_timer_interval); | |
3371 | free(content); | |
3372 | if (ret) { | |
3373 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3374 | goto end; | |
3375 | } | |
3376 | } else if (!strcmp((const char *) child->name, | |
3377 | config_element_rotation_schedule_size_threshold)) { | |
3378 | xmlChar *content; | |
3379 | xmlNodePtr bytes_node; | |
3380 | ||
3381 | /* size_threshold rotation schedule */ | |
3382 | bytes_node = xmlFirstElementChild(child); | |
3383 | if (!bytes_node || | |
3384 | strcmp((const char *) bytes_node->name, | |
3385 | config_element_rotation_schedule_size_threshold_bytes)) { | |
3386 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3387 | goto end; | |
3388 | } | |
3389 | ||
3390 | /* bytes child */ | |
3391 | content = xmlNodeGetContent(bytes_node); | |
3392 | if (!content) { | |
3393 | ret = -LTTNG_ERR_NOMEM; | |
3394 | goto end; | |
3395 | } | |
3396 | ret = parse_uint(content, rotation_size); | |
3397 | free(content); | |
3398 | if (ret) { | |
3399 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3400 | goto end; | |
3401 | } | |
3402 | } | |
3403 | } | |
3404 | ||
3405 | end: | |
3406 | return ret; | |
3407 | } | |
3408 | ||
dcf266c0 JG |
3409 | static |
3410 | int process_session_node(xmlNodePtr session_node, const char *session_name, | |
1b08cbce JR |
3411 | int overwrite, |
3412 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3413 | { |
3414 | int ret, started = -1, snapshot_mode = -1; | |
259c2674 | 3415 | uint64_t live_timer_interval = UINT64_MAX, |
90936dcf JD |
3416 | rotation_timer_interval = 0, |
3417 | rotation_size = 0; | |
d324faf7 | 3418 | xmlChar *name = NULL; |
9e7c9f56 | 3419 | xmlChar *shm_path = NULL; |
dcf266c0 JG |
3420 | xmlNodePtr domains_node = NULL; |
3421 | xmlNodePtr output_node = NULL; | |
3422 | xmlNodePtr node; | |
90936dcf | 3423 | xmlNodePtr attributes_child; |
dcf266c0 JG |
3424 | struct lttng_domain *kernel_domain = NULL; |
3425 | struct lttng_domain *ust_domain = NULL; | |
3426 | struct lttng_domain *jul_domain = NULL; | |
5cdb6027 | 3427 | struct lttng_domain *log4j_domain = NULL; |
0e115563 | 3428 | struct lttng_domain *python_domain = NULL; |
dcf266c0 JG |
3429 | |
3430 | for (node = xmlFirstElementChild(session_node); node; | |
3431 | node = xmlNextElementSibling(node)) { | |
3432 | if (!name && !strcmp((const char *) node->name, | |
3433 | config_element_name)) { | |
3434 | /* name */ | |
3435 | xmlChar *node_content = xmlNodeGetContent(node); | |
3436 | if (!node_content) { | |
3437 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3438 | goto error; |
dcf266c0 JG |
3439 | } |
3440 | ||
d324faf7 | 3441 | name = node_content; |
dcf266c0 JG |
3442 | } else if (!domains_node && !strcmp((const char *) node->name, |
3443 | config_element_domains)) { | |
3444 | /* domains */ | |
3445 | domains_node = node; | |
3446 | } else if (started == -1 && !strcmp((const char *) node->name, | |
3447 | config_element_started)) { | |
3448 | /* started */ | |
3449 | xmlChar *node_content = xmlNodeGetContent(node); | |
3450 | if (!node_content) { | |
3451 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3452 | goto error; |
dcf266c0 JG |
3453 | } |
3454 | ||
3455 | ret = parse_bool(node_content, &started); | |
3456 | free(node_content); | |
3457 | if (ret) { | |
3458 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3459 | goto error; |
dcf266c0 JG |
3460 | } |
3461 | } else if (!output_node && !strcmp((const char *) node->name, | |
3462 | config_element_output)) { | |
3463 | /* output */ | |
3464 | output_node = node; | |
9e7c9f56 JR |
3465 | } else if (!shm_path && !strcmp((const char *) node->name, |
3466 | config_element_shared_memory_path)) { | |
3467 | /* shared memory path */ | |
3468 | xmlChar *node_content = xmlNodeGetContent(node); | |
3469 | if (!node_content) { | |
3470 | ret = -LTTNG_ERR_NOMEM; | |
3471 | goto error; | |
3472 | } | |
3473 | ||
3474 | shm_path = node_content; | |
dcf266c0 | 3475 | } else { |
259c2674 JD |
3476 | /* |
3477 | * attributes, snapshot_mode, live_timer_interval, rotation_size, | |
90936dcf JD |
3478 | * rotation_timer_interval. |
3479 | */ | |
3480 | for (attributes_child = xmlFirstElementChild(node); attributes_child; | |
3481 | attributes_child = xmlNextElementSibling(attributes_child)) { | |
3482 | if (!strcmp((const char *) attributes_child->name, | |
3483 | config_element_snapshot_mode)) { | |
3484 | /* snapshot_mode */ | |
3485 | xmlChar *snapshot_mode_content = | |
3486 | xmlNodeGetContent(attributes_child); | |
3487 | if (!snapshot_mode_content) { | |
3488 | ret = -LTTNG_ERR_NOMEM; | |
3489 | goto error; | |
3490 | } | |
dcf266c0 | 3491 | |
90936dcf JD |
3492 | ret = parse_bool(snapshot_mode_content, &snapshot_mode); |
3493 | free(snapshot_mode_content); | |
3494 | if (ret) { | |
3495 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3496 | goto error; | |
3497 | } | |
3498 | } else if (!strcmp((const char *) attributes_child->name, | |
3499 | config_element_live_timer_interval)) { | |
3500 | /* live_timer_interval */ | |
3501 | xmlChar *timer_interval_content = | |
3502 | xmlNodeGetContent(attributes_child); | |
3503 | if (!timer_interval_content) { | |
3504 | ret = -LTTNG_ERR_NOMEM; | |
3505 | goto error; | |
3506 | } | |
dcf266c0 | 3507 | |
90936dcf JD |
3508 | ret = parse_uint(timer_interval_content, &live_timer_interval); |
3509 | free(timer_interval_content); | |
3510 | if (ret) { | |
3511 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3512 | goto error; | |
3513 | } | |
ce6176f2 JG |
3514 | } else if (!strcmp((const char *) attributes_child->name, |
3515 | config_element_rotation_schedules)) { | |
3516 | ret = process_session_rotation_schedules_node( | |
3517 | attributes_child, | |
3518 | &rotation_timer_interval, | |
3519 | &rotation_size); | |
90936dcf JD |
3520 | if (ret) { |
3521 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3522 | goto error; | |
3523 | } | |
259c2674 | 3524 | |
259c2674 JD |
3525 | } |
3526 | } | |
dcf266c0 JG |
3527 | } |
3528 | } | |
3529 | ||
3530 | if (!name) { | |
3531 | /* Mandatory attribute, as defined in the session XSD */ | |
3532 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3533 | goto error; |
dcf266c0 JG |
3534 | } |
3535 | ||
d324faf7 | 3536 | if (session_name && strcmp((char *) name, session_name)) { |
dcf266c0 | 3537 | /* This is not the session we are looking for */ |
c2da8cde DG |
3538 | ret = -LTTNG_ERR_NO_SESSION; |
3539 | goto error; | |
dcf266c0 JG |
3540 | } |
3541 | ||
3542 | /* Init domains to create the session handles */ | |
3543 | for (node = xmlFirstElementChild(domains_node); node; | |
3544 | node = xmlNextElementSibling(node)) { | |
3545 | struct lttng_domain *domain; | |
3546 | ||
3547 | domain = zmalloc(sizeof(*domain)); | |
3548 | if (!domain) { | |
3549 | ret = -LTTNG_ERR_NOMEM; | |
c2da8cde | 3550 | goto error; |
dcf266c0 JG |
3551 | } |
3552 | ||
3553 | ret = init_domain(node, domain); | |
3554 | if (ret) { | |
3555 | goto domain_init_error; | |
3556 | } | |
3557 | ||
3558 | switch (domain->type) { | |
3559 | case LTTNG_DOMAIN_KERNEL: | |
c33e6729 DG |
3560 | if (kernel_domain) { |
3561 | /* Same domain seen twice, invalid! */ | |
3562 | goto domain_init_error; | |
3563 | } | |
dcf266c0 JG |
3564 | kernel_domain = domain; |
3565 | break; | |
3566 | case LTTNG_DOMAIN_UST: | |
c33e6729 DG |
3567 | if (ust_domain) { |
3568 | /* Same domain seen twice, invalid! */ | |
3569 | goto domain_init_error; | |
3570 | } | |
dcf266c0 JG |
3571 | ust_domain = domain; |
3572 | break; | |
3573 | case LTTNG_DOMAIN_JUL: | |
c33e6729 DG |
3574 | if (jul_domain) { |
3575 | /* Same domain seen twice, invalid! */ | |
3576 | goto domain_init_error; | |
3577 | } | |
dcf266c0 JG |
3578 | jul_domain = domain; |
3579 | break; | |
5cdb6027 DG |
3580 | case LTTNG_DOMAIN_LOG4J: |
3581 | if (log4j_domain) { | |
3582 | /* Same domain seen twice, invalid! */ | |
3583 | goto domain_init_error; | |
3584 | } | |
3585 | log4j_domain = domain; | |
3586 | break; | |
0e115563 DG |
3587 | case LTTNG_DOMAIN_PYTHON: |
3588 | if (python_domain) { | |
3589 | /* Same domain seen twice, invalid! */ | |
3590 | goto domain_init_error; | |
3591 | } | |
3592 | python_domain = domain; | |
3593 | break; | |
dcf266c0 JG |
3594 | default: |
3595 | WARN("Invalid domain type"); | |
3596 | goto domain_init_error; | |
3597 | } | |
3598 | continue; | |
3599 | domain_init_error: | |
3600 | free(domain); | |
3601 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
c2da8cde | 3602 | goto error; |
dcf266c0 JG |
3603 | } |
3604 | ||
2aaf5fc7 JR |
3605 | /* Apply overrides */ |
3606 | if (overrides) { | |
3607 | if (overrides->session_name) { | |
3608 | xmlChar *name_override = xmlStrdup(BAD_CAST(overrides->session_name)); | |
3609 | if (!name_override) { | |
3610 | ret = -LTTNG_ERR_NOMEM; | |
3611 | goto error; | |
3612 | } | |
3613 | ||
3614 | /* Overrides the session name to the provided name */ | |
3615 | xmlFree(name); | |
3616 | name = name_override; | |
3617 | } | |
3618 | } | |
3619 | ||
40b4155f | 3620 | if (overwrite) { |
dcf266c0 | 3621 | /* Destroy session if it exists */ |
d324faf7 | 3622 | ret = lttng_destroy_session((const char *) name); |
dcf266c0 JG |
3623 | if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) { |
3624 | ERR("Failed to destroy existing session."); | |
c2da8cde | 3625 | goto error; |
dcf266c0 JG |
3626 | } |
3627 | } | |
3628 | ||
3629 | /* Create session type depending on output type */ | |
3630 | if (snapshot_mode && snapshot_mode != -1) { | |
1b08cbce JR |
3631 | ret = create_snapshot_session((const char *) name, output_node, |
3632 | overrides); | |
dcf266c0 JG |
3633 | } else if (live_timer_interval && |
3634 | live_timer_interval != UINT64_MAX) { | |
194dfca0 | 3635 | ret = create_session((const char *) name, |
1b08cbce | 3636 | output_node, live_timer_interval, overrides); |
dcf266c0 JG |
3637 | } else { |
3638 | /* regular session */ | |
194dfca0 | 3639 | ret = create_session((const char *) name, |
1b08cbce | 3640 | output_node, UINT64_MAX, overrides); |
dcf266c0 | 3641 | } |
dcf266c0 | 3642 | if (ret) { |
c2da8cde | 3643 | goto error; |
dcf266c0 JG |
3644 | } |
3645 | ||
9e7c9f56 JR |
3646 | if (shm_path) { |
3647 | ret = lttng_set_session_shm_path((const char *) name, | |
d324faf7 | 3648 | (const char *) shm_path); |
9e7c9f56 JR |
3649 | if (ret) { |
3650 | goto error; | |
3651 | } | |
3652 | } | |
3653 | ||
dcf266c0 JG |
3654 | for (node = xmlFirstElementChild(domains_node); node; |
3655 | node = xmlNextElementSibling(node)) { | |
d324faf7 | 3656 | ret = process_domain_node(node, (const char *) name); |
dcf266c0 JG |
3657 | if (ret) { |
3658 | goto end; | |
3659 | } | |
3660 | } | |
3661 | ||
66ea93b1 JG |
3662 | if (rotation_timer_interval) { |
3663 | ret = add_periodic_rotation((const char *) name, | |
3664 | rotation_timer_interval); | |
3665 | if (ret < 0) { | |
259c2674 JD |
3666 | goto error; |
3667 | } | |
66ea93b1 JG |
3668 | } |
3669 | if (rotation_size) { | |
3670 | ret = add_size_rotation((const char *) name, | |
dbd512ea | 3671 | rotation_size); |
66ea93b1 | 3672 | if (ret < 0) { |
259c2674 JD |
3673 | goto error; |
3674 | } | |
3675 | } | |
3676 | ||
dcf266c0 | 3677 | if (started) { |
d324faf7 | 3678 | ret = lttng_start_tracing((const char *) name); |
dcf266c0 JG |
3679 | if (ret) { |
3680 | goto end; | |
3681 | } | |
3682 | } | |
c2da8cde | 3683 | |
dcf266c0 | 3684 | end: |
b2579dc1 | 3685 | if (ret < 0) { |
d324faf7 JG |
3686 | ERR("Failed to load session %s: %s", (const char *) name, |
3687 | lttng_strerror(ret)); | |
3688 | lttng_destroy_session((const char *) name); | |
b2579dc1 JG |
3689 | } |
3690 | ||
c2da8cde | 3691 | error: |
dcf266c0 JG |
3692 | free(kernel_domain); |
3693 | free(ust_domain); | |
3694 | free(jul_domain); | |
5cdb6027 | 3695 | free(log4j_domain); |
135a3893 | 3696 | free(python_domain); |
d324faf7 | 3697 | xmlFree(name); |
9e7c9f56 | 3698 | xmlFree(shm_path); |
dcf266c0 JG |
3699 | return ret; |
3700 | } | |
3701 | ||
cf53c06d DG |
3702 | /* |
3703 | * Return 1 if the given path is readable by the current UID or 0 if not. | |
3704 | * Return -1 if the path is EPERM. | |
3705 | */ | |
3706 | static int validate_file_read_creds(const char *path) | |
3707 | { | |
3708 | int ret; | |
3709 | ||
3710 | assert(path); | |
3711 | ||
3712 | /* Can we read the file. */ | |
3713 | ret = access(path, R_OK); | |
3714 | if (!ret) { | |
3715 | goto valid; | |
3716 | } | |
3717 | if (errno == EACCES) { | |
3718 | return -1; | |
3719 | } else { | |
3720 | /* Invalid. */ | |
3721 | return 0; | |
3722 | } | |
3723 | valid: | |
3724 | return 1; | |
3725 | } | |
3726 | ||
dcf266c0 JG |
3727 | static |
3728 | int load_session_from_file(const char *path, const char *session_name, | |
1b08cbce JR |
3729 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3730 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3731 | { |
3732 | int ret, session_found = !session_name; | |
3733 | xmlDocPtr doc = NULL; | |
3734 | xmlNodePtr sessions_node; | |
3735 | xmlNodePtr session_node; | |
dcf266c0 JG |
3736 | |
3737 | assert(path); | |
3738 | assert(validation_ctx); | |
3739 | ||
cf53c06d DG |
3740 | ret = validate_file_read_creds(path); |
3741 | if (ret != 1) { | |
3742 | if (ret == -1) { | |
3743 | ret = -LTTNG_ERR_EPERM; | |
3744 | } else { | |
3745 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3746 | } | |
dcf266c0 JG |
3747 | goto end; |
3748 | } | |
3749 | ||
3750 | doc = xmlParseFile(path); | |
3751 | if (!doc) { | |
3752 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3753 | goto end; | |
3754 | } | |
3755 | ||
3756 | ret = xmlSchemaValidateDoc(validation_ctx->schema_validation_ctx, doc); | |
3757 | if (ret) { | |
3758 | ERR("Session configuration file validation failed"); | |
3759 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; | |
3760 | goto end; | |
3761 | } | |
3762 | ||
3763 | sessions_node = xmlDocGetRootElement(doc); | |
3764 | if (!sessions_node) { | |
55c9e7ca | 3765 | ret = -LTTNG_ERR_LOAD_INVALID_CONFIG; |
dcf266c0 JG |
3766 | goto end; |
3767 | } | |
3768 | ||
3769 | for (session_node = xmlFirstElementChild(sessions_node); | |
3770 | session_node; session_node = | |
3771 | xmlNextElementSibling(session_node)) { | |
3772 | ret = process_session_node(session_node, | |
1b08cbce | 3773 | session_name, overwrite, overrides); |
317ea246 JG |
3774 | if (!session_name && ret) { |
3775 | /* Loading error occurred. */ | |
3776 | goto end; | |
3777 | } else if (session_name) { | |
3778 | if (ret == 0) { | |
3779 | /* Target session found and loaded */ | |
3780 | session_found = 1; | |
3781 | break; | |
3782 | } else if (ret == -LTTNG_ERR_NO_SESSION) { | |
3783 | /* | |
3784 | * Ignore this error, we are looking for a | |
3785 | * specific session. | |
3786 | */ | |
3787 | ret = 0; | |
3788 | } else { | |
3789 | /* Loading error occurred. */ | |
3790 | goto end; | |
3791 | } | |
dcf266c0 JG |
3792 | } |
3793 | } | |
3794 | end: | |
3795 | xmlFreeDoc(doc); | |
3796 | if (!ret) { | |
a96bc65d | 3797 | ret = session_found ? 0 : -LTTNG_ERR_LOAD_SESSION_NOENT; |
dcf266c0 JG |
3798 | } |
3799 | return ret; | |
3800 | } | |
3801 | ||
3802 | static | |
3803 | int load_session_from_path(const char *path, const char *session_name, | |
1b08cbce JR |
3804 | struct session_config_validation_ctx *validation_ctx, int overwrite, |
3805 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
3806 | { |
3807 | int ret, session_found = !session_name; | |
dcf266c0 | 3808 | DIR *directory = NULL; |
cce35f91 JG |
3809 | struct lttng_dynamic_buffer file_path; |
3810 | size_t path_len; | |
dcf266c0 JG |
3811 | |
3812 | assert(path); | |
3813 | assert(validation_ctx); | |
cce35f91 JG |
3814 | path_len = strlen(path); |
3815 | lttng_dynamic_buffer_init(&file_path); | |
3816 | if (path_len >= LTTNG_PATH_MAX) { | |
3817 | ERR("Session configuration load path \"%s\" length (%zu) exceeds the maximal length allowed (%d)", | |
3818 | path, path_len, LTTNG_PATH_MAX); | |
3819 | ret = -LTTNG_ERR_INVALID; | |
3820 | goto end; | |
3821 | } | |
dcf266c0 | 3822 | |
4af16958 DG |
3823 | directory = opendir(path); |
3824 | if (!directory) { | |
11143783 DG |
3825 | switch (errno) { |
3826 | case ENOTDIR: | |
0f0a81b5 DG |
3827 | /* Try the file loading. */ |
3828 | break; | |
11143783 DG |
3829 | case ENOENT: |
3830 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
3831 | goto end; | |
3832 | default: | |
0f0a81b5 DG |
3833 | ret = -LTTNG_ERR_LOAD_IO_FAIL; |
3834 | goto end; | |
4af16958 | 3835 | } |
dcf266c0 | 3836 | } |
4af16958 | 3837 | if (directory) { |
cce35f91 | 3838 | size_t file_path_root_len; |
dcf266c0 | 3839 | |
cce35f91 JG |
3840 | ret = lttng_dynamic_buffer_set_capacity(&file_path, |
3841 | LTTNG_PATH_MAX); | |
3842 | if (ret) { | |
3843 | ret = -LTTNG_ERR_NOMEM; | |
dcf266c0 JG |
3844 | goto end; |
3845 | } | |
3846 | ||
cce35f91 JG |
3847 | ret = lttng_dynamic_buffer_append(&file_path, path, path_len); |
3848 | if (ret) { | |
dcf266c0 | 3849 | ret = -LTTNG_ERR_NOMEM; |
dcf266c0 JG |
3850 | goto end; |
3851 | } | |
3852 | ||
cce35f91 JG |
3853 | if (file_path.data[file_path.size - 1] != '/') { |
3854 | ret = lttng_dynamic_buffer_append(&file_path, "/", 1); | |
3855 | if (ret) { | |
3856 | ret = -LTTNG_ERR_NOMEM; | |
3857 | goto end; | |
3858 | } | |
dcf266c0 | 3859 | } |
cce35f91 | 3860 | file_path_root_len = file_path.size; |
dcf266c0 JG |
3861 | |
3862 | /* Search for *.lttng files */ | |
9a2df626 MJ |
3863 | for (;;) { |
3864 | size_t file_name_len; | |
3865 | struct dirent *result; | |
3866 | ||
3867 | /* | |
3868 | * When the end of the directory stream is reached, NULL | |
3869 | * is returned and errno is kept unchanged. When an | |
3870 | * error occurs, NULL is returned and errno is set | |
3871 | * accordingly. To distinguish between the two, set | |
3872 | * errno to zero before calling readdir(). | |
3873 | * | |
3874 | * On success, readdir() returns a pointer to a dirent | |
3875 | * structure. This structure may be statically | |
3876 | * allocated, do not attempt to free(3) it. | |
3877 | */ | |
3878 | errno = 0; | |
3879 | result = readdir(directory); | |
3880 | ||
ff86d8d0 | 3881 | /* Reached end of dir stream or error out. */ |
9a2df626 MJ |
3882 | if (!result) { |
3883 | if (errno) { | |
3884 | PERROR("Failed to enumerate the contents of path \"%s\" while loading session, readdir returned", path); | |
3885 | ret = -LTTNG_ERR_LOAD_IO_FAIL; | |
3886 | goto end; | |
3887 | } | |
3888 | break; | |
3889 | } | |
3890 | ||
3891 | file_name_len = strlen(result->d_name); | |
dcf266c0 JG |
3892 | |
3893 | if (file_name_len <= | |
3894 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) { | |
3895 | continue; | |
3896 | } | |
3897 | ||
cce35f91 JG |
3898 | if (file_path.size + file_name_len >= LTTNG_PATH_MAX) { |
3899 | WARN("Ignoring file \"%s\" since the path's length (%zu) would exceed the maximal permitted size (%d)", | |
3900 | result->d_name, | |
3901 | /* +1 to account for NULL terminator. */ | |
3902 | file_path.size + file_name_len + 1, | |
3903 | LTTNG_PATH_MAX); | |
dcf266c0 JG |
3904 | continue; |
3905 | } | |
3906 | ||
cce35f91 | 3907 | /* Does the file end with .lttng? */ |
dcf266c0 | 3908 | if (strcmp(DEFAULT_SESSION_CONFIG_FILE_EXTENSION, |
cce35f91 JG |
3909 | result->d_name + file_name_len - sizeof( |
3910 | DEFAULT_SESSION_CONFIG_FILE_EXTENSION) + 1)) { | |
dcf266c0 JG |
3911 | continue; |
3912 | } | |
3913 | ||
cce35f91 JG |
3914 | ret = lttng_dynamic_buffer_append(&file_path, result->d_name, |
3915 | file_name_len + 1); | |
3916 | if (ret) { | |
3917 | ret = -LTTNG_ERR_NOMEM; | |
3918 | goto end; | |
3919 | } | |
dcf266c0 | 3920 | |
cce35f91 | 3921 | ret = load_session_from_file(file_path.data, session_name, |
1b08cbce | 3922 | validation_ctx, overwrite, overrides); |
55c9e7ca JR |
3923 | if (session_name && |
3924 | (!ret || ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) { | |
dcf266c0 JG |
3925 | session_found = 1; |
3926 | break; | |
3927 | } | |
55c9e7ca JR |
3928 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
3929 | goto end; | |
3930 | } | |
cce35f91 JG |
3931 | /* |
3932 | * Reset the buffer's size to the location of the | |
3933 | * path's trailing '/'. | |
3934 | */ | |
3935 | ret = lttng_dynamic_buffer_set_size(&file_path, | |
3936 | file_path_root_len); | |
3937 | if (ret) { | |
3938 | ret = -LTTNG_ERR_UNK; | |
3939 | goto end; | |
3940 | } | |
dcf266c0 | 3941 | } |
dcf266c0 JG |
3942 | } else { |
3943 | ret = load_session_from_file(path, session_name, | |
1b08cbce | 3944 | validation_ctx, overwrite, overrides); |
dcf266c0 JG |
3945 | if (ret) { |
3946 | goto end; | |
dcf266c0 | 3947 | } |
55c9e7ca | 3948 | session_found = 1; |
dcf266c0 JG |
3949 | } |
3950 | ||
55c9e7ca | 3951 | ret = 0; |
dcf266c0 JG |
3952 | end: |
3953 | if (directory) { | |
3954 | if (closedir(directory)) { | |
3955 | PERROR("closedir"); | |
3956 | } | |
3957 | } | |
55c9e7ca JR |
3958 | if (!ret && !session_found) { |
3959 | ret = -LTTNG_ERR_LOAD_SESSION_NOENT; | |
dcf266c0 | 3960 | } |
cce35f91 | 3961 | lttng_dynamic_buffer_reset(&file_path); |
dcf266c0 JG |
3962 | return ret; |
3963 | } | |
3964 | ||
ab38c13f DG |
3965 | /* |
3966 | * Validate that the given path's credentials and the current process have the | |
cf53c06d | 3967 | * same UID. If so, return 1 else return 0 if it does NOT match. |
ab38c13f DG |
3968 | */ |
3969 | static int validate_path_creds(const char *path) | |
3970 | { | |
3971 | int ret, uid = getuid(); | |
3972 | struct stat buf; | |
3973 | ||
3974 | assert(path); | |
3975 | ||
cf53c06d | 3976 | if (uid == 0) { |
ab38c13f DG |
3977 | goto valid; |
3978 | } | |
3979 | ||
3980 | ret = stat(path, &buf); | |
3981 | if (ret < 0) { | |
3982 | if (errno != ENOENT) { | |
3983 | PERROR("stat"); | |
3984 | } | |
ab38c13f DG |
3985 | goto valid; |
3986 | } | |
3987 | ||
3988 | if (buf.st_uid != uid) { | |
3989 | goto invalid; | |
3990 | } | |
3991 | ||
3992 | valid: | |
ab38c13f | 3993 | return 1; |
cf53c06d DG |
3994 | invalid: |
3995 | return 0; | |
ab38c13f DG |
3996 | } |
3997 | ||
dcf266c0 JG |
3998 | LTTNG_HIDDEN |
3999 | int config_load_session(const char *path, const char *session_name, | |
1b08cbce JR |
4000 | int overwrite, unsigned int autoload, |
4001 | const struct config_load_session_override_attr *overrides) | |
dcf266c0 JG |
4002 | { |
4003 | int ret; | |
6c66fa0f | 4004 | bool session_loaded = false; |
cf53c06d | 4005 | const char *path_ptr = NULL; |
dcf266c0 JG |
4006 | struct session_config_validation_ctx validation_ctx = { 0 }; |
4007 | ||
4008 | ret = init_session_config_validation_ctx(&validation_ctx); | |
4009 | if (ret) { | |
4010 | goto end; | |
4011 | } | |
4012 | ||
4013 | if (!path) { | |
4f00620d | 4014 | const char *home_path; |
ab38c13f DG |
4015 | const char *sys_path; |
4016 | ||
dcf266c0 | 4017 | /* Try home path */ |
ab38c13f | 4018 | home_path = utils_get_home_dir(); |
dcf266c0 | 4019 | if (home_path) { |
ab38c13f | 4020 | char path[PATH_MAX]; |
dcf266c0 | 4021 | |
d4fcf703 DG |
4022 | /* |
4023 | * Try user session configuration path. Ignore error here so we can | |
4024 | * continue loading the system wide sessions. | |
4025 | */ | |
ab38c13f DG |
4026 | if (autoload) { |
4027 | ret = snprintf(path, sizeof(path), | |
4028 | DEFAULT_SESSION_HOME_CONFIGPATH "/" | |
4029 | DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path); | |
cf53c06d DG |
4030 | if (ret < 0) { |
4031 | PERROR("snprintf session autoload home config path"); | |
55c9e7ca | 4032 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4033 | goto end; |
4034 | } | |
4035 | ||
4036 | /* | |
4037 | * Credentials are only validated for the autoload in order to | |
4038 | * avoid any user session daemon to try to load kernel sessions | |
4039 | * automatically and failing all the times. | |
4040 | */ | |
4041 | ret = validate_path_creds(path); | |
4042 | if (ret) { | |
4043 | path_ptr = path; | |
4044 | } | |
ab38c13f DG |
4045 | } else { |
4046 | ret = snprintf(path, sizeof(path), | |
4047 | DEFAULT_SESSION_HOME_CONFIGPATH, home_path); | |
cf53c06d DG |
4048 | if (ret < 0) { |
4049 | PERROR("snprintf session home config path"); | |
55c9e7ca | 4050 | ret = -LTTNG_ERR_INVALID; |
cf53c06d DG |
4051 | goto end; |
4052 | } | |
4053 | path_ptr = path; | |
ab38c13f | 4054 | } |
cf53c06d DG |
4055 | if (path_ptr) { |
4056 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4057 | &validation_ctx, overwrite, overrides); |
d4fcf703 DG |
4058 | if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) { |
4059 | goto end; | |
4060 | } | |
4061 | /* | |
4062 | * Continue even if the session was found since we have to try | |
4063 | * the system wide sessions. | |
4064 | */ | |
6c66fa0f | 4065 | session_loaded = true; |
ab38c13f | 4066 | } |
d4fcf703 | 4067 | } |
ab38c13f | 4068 | |
cf53c06d DG |
4069 | /* Reset path pointer for the system wide dir. */ |
4070 | path_ptr = NULL; | |
4071 | ||
d4fcf703 DG |
4072 | /* Try system wide configuration directory. */ |
4073 | if (autoload) { | |
4074 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/" | |
4075 | DEFAULT_SESSION_CONFIG_AUTOLOAD; | |
cf53c06d DG |
4076 | ret = validate_path_creds(sys_path); |
4077 | if (ret) { | |
4078 | path_ptr = sys_path; | |
4079 | } | |
d4fcf703 | 4080 | } else { |
cf53c06d DG |
4081 | sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH; |
4082 | path_ptr = sys_path; | |
d4fcf703 DG |
4083 | } |
4084 | ||
cf53c06d DG |
4085 | if (path_ptr) { |
4086 | ret = load_session_from_path(path_ptr, session_name, | |
1b08cbce | 4087 | &validation_ctx, overwrite, overrides); |
6c66fa0f JG |
4088 | if (!ret) { |
4089 | session_loaded = true; | |
4090 | } | |
55c9e7ca JR |
4091 | } else { |
4092 | ret = 0; | |
dcf266c0 JG |
4093 | } |
4094 | } else { | |
4095 | ret = access(path, F_OK); | |
4096 | if (ret < 0) { | |
4097 | PERROR("access"); | |
4098 | switch (errno) { | |
4099 | case ENOENT: | |
4100 | ret = -LTTNG_ERR_INVALID; | |
4101 | WARN("Session configuration path does not exist."); | |
4102 | break; | |
4103 | case EACCES: | |
4104 | ret = -LTTNG_ERR_EPERM; | |
4105 | break; | |
4106 | default: | |
4107 | ret = -LTTNG_ERR_UNK; | |
4108 | break; | |
4109 | } | |
4110 | goto end; | |
4111 | } | |
4112 | ||
4113 | ret = load_session_from_path(path, session_name, | |
1b08cbce | 4114 | &validation_ctx, overwrite, overrides); |
dcf266c0 JG |
4115 | } |
4116 | end: | |
4117 | fini_session_config_validation_ctx(&validation_ctx); | |
d2b6efff JG |
4118 | if (ret == -LTTNG_ERR_LOAD_SESSION_NOENT && !session_name && !path) { |
4119 | /* | |
4120 | * Don't report an error if no sessions are found when called | |
4121 | * without a session_name or a search path. | |
4122 | */ | |
4123 | ret = 0; | |
4124 | } | |
6c66fa0f JG |
4125 | |
4126 | if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) { | |
4127 | /* A matching session was found in one of the search paths. */ | |
4128 | ret = 0; | |
4129 | } | |
dcf266c0 JG |
4130 | return ret; |
4131 | } | |
56766c75 JG |
4132 | |
4133 | static | |
4134 | void __attribute__((destructor)) session_config_exit(void) | |
4135 | { | |
4136 | xmlCleanupParser(); | |
4137 | } |