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