Commit | Line | Data |
---|---|---|
fb198a11 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
fb198a11 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
fb198a11 | 5 | * |
fb198a11 JG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
fb198a11 JG |
9 | #include <assert.h> |
10 | #include <inttypes.h> | |
11 | #include <string.h> | |
12 | #include <urcu/uatomic.h> | |
13 | #include <unistd.h> | |
14 | ||
15 | #include <common/defaults.h> | |
16 | #include <common/error.h> | |
f40ef1d5 | 17 | #include <common/config/session-config.h> |
fb198a11 JG |
18 | #include <common/utils.h> |
19 | #include <common/runas.h> | |
20 | #include <lttng/save-internal.h> | |
21 | ||
847a5916 | 22 | #include "kernel.h" |
fb198a11 JG |
23 | #include "save.h" |
24 | #include "session.h" | |
0dbc2034 | 25 | #include "lttng-syscall.h" |
fb198a11 | 26 | #include "trace-ust.h" |
51755dc8 | 27 | #include "agent.h" |
fb198a11 | 28 | |
55c9e7ca | 29 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
30 | static |
31 | int save_kernel_channel_attributes(struct config_writer *writer, | |
32 | struct lttng_channel_attr *attr) | |
33 | { | |
34 | int ret; | |
35 | ||
36 | ret = config_writer_write_element_string(writer, | |
37 | config_element_overwrite_mode, | |
38 | attr->overwrite ? config_overwrite_mode_overwrite : | |
39 | config_overwrite_mode_discard); | |
40 | if (ret) { | |
55c9e7ca | 41 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
42 | goto end; |
43 | } | |
44 | ||
45 | ret = config_writer_write_element_unsigned_int(writer, | |
46 | config_element_subbuf_size, attr->subbuf_size); | |
47 | if (ret) { | |
55c9e7ca | 48 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
49 | goto end; |
50 | } | |
51 | ||
52 | ret = config_writer_write_element_unsigned_int(writer, | |
53 | config_element_num_subbuf, | |
54 | attr->num_subbuf); | |
55 | if (ret) { | |
55c9e7ca | 56 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
57 | goto end; |
58 | } | |
59 | ||
60 | ret = config_writer_write_element_unsigned_int(writer, | |
61 | config_element_switch_timer_interval, | |
62 | attr->switch_timer_interval); | |
63 | if (ret) { | |
55c9e7ca | 64 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
65 | goto end; |
66 | } | |
67 | ||
68 | ret = config_writer_write_element_unsigned_int(writer, | |
69 | config_element_read_timer_interval, | |
70 | attr->read_timer_interval); | |
71 | if (ret) { | |
55c9e7ca | 72 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
73 | goto end; |
74 | } | |
75 | ||
76 | ret = config_writer_write_element_string(writer, | |
77 | config_element_output_type, | |
78 | attr->output == LTTNG_EVENT_SPLICE ? | |
79 | config_output_type_splice : config_output_type_mmap); | |
80 | if (ret) { | |
55c9e7ca | 81 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
82 | goto end; |
83 | } | |
84 | ||
85 | ret = config_writer_write_element_unsigned_int(writer, | |
86 | config_element_tracefile_size, attr->tracefile_size); | |
87 | if (ret) { | |
55c9e7ca | 88 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
89 | goto end; |
90 | } | |
91 | ||
92 | ret = config_writer_write_element_unsigned_int(writer, | |
93 | config_element_tracefile_count, | |
94 | attr->tracefile_count); | |
95 | if (ret) { | |
55c9e7ca | 96 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
97 | goto end; |
98 | } | |
99 | ||
100 | ret = config_writer_write_element_unsigned_int(writer, | |
101 | config_element_live_timer_interval, | |
102 | attr->live_timer_interval); | |
103 | if (ret) { | |
55c9e7ca | 104 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
105 | goto end; |
106 | } | |
4fc2b126 JR |
107 | |
108 | if (attr->extended.ptr) { | |
109 | struct lttng_channel_extended *ext = NULL; | |
110 | ||
111 | ext = (struct lttng_channel_extended *) attr->extended.ptr; | |
112 | ret = config_writer_write_element_unsigned_int(writer, | |
113 | config_element_monitor_timer_interval, | |
114 | ext->monitor_timer_interval); | |
115 | if (ret) { | |
55c9e7ca | 116 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
117 | goto end; |
118 | } | |
275472aa JR |
119 | |
120 | ret = config_writer_write_element_signed_int(writer, | |
121 | config_element_blocking_timeout, | |
122 | ext->blocking_timeout); | |
123 | if (ret) { | |
55c9e7ca | 124 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
125 | goto end; |
126 | } | |
4fc2b126 JR |
127 | } |
128 | ||
55c9e7ca | 129 | ret = LTTNG_OK; |
fb198a11 | 130 | end: |
55c9e7ca | 131 | return ret; |
fb198a11 JG |
132 | } |
133 | ||
c3e68e71 JR |
134 | static |
135 | int save_map_attributes(struct config_writer *writer, | |
136 | struct lttng_map *map) | |
137 | { | |
138 | int ret; | |
139 | unsigned int i; | |
140 | ||
141 | ret = config_writer_write_element_unsigned_int(writer, | |
142 | config_element_bitness, | |
143 | lttng_map_get_bitness(map)==LTTNG_MAP_BITNESS_32BITS ? 32: 64); | |
144 | if (ret) { | |
145 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
146 | goto end; | |
147 | } | |
148 | ||
149 | assert( lttng_map_get_boundary_policy(map) == LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW); | |
150 | ret = config_writer_write_element_string(writer, | |
151 | config_element_boundary_policy, config_boundary_policy_overflow); | |
152 | if (ret) { | |
153 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
154 | goto end; | |
155 | } | |
156 | ||
157 | ret = config_writer_write_element_bool(writer, | |
158 | config_element_coalesce_hits, | |
159 | lttng_map_get_coalesce_hits(map)); | |
160 | if (ret) { | |
161 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
162 | goto end; | |
163 | } | |
164 | ||
165 | ret = config_writer_open_element(writer, | |
166 | config_element_dimensions); | |
167 | if (ret) { | |
168 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
169 | goto end; | |
170 | } | |
171 | for (i = 0; i < lttng_map_get_dimension_count(map); i++) { | |
172 | enum lttng_map_status map_status; | |
173 | uint64_t dim_len; | |
174 | ||
175 | ret = config_writer_open_element(writer, | |
176 | config_element_dimension); | |
177 | if (ret) { | |
178 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
179 | goto end; | |
180 | } | |
181 | ||
182 | map_status = lttng_map_get_dimension_length(map, i, &dim_len); | |
183 | if (map_status != LTTNG_MAP_STATUS_OK) { | |
184 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
185 | goto end; | |
186 | } | |
187 | ||
188 | ret = config_writer_write_element_unsigned_int(writer, | |
189 | config_element_dimension_size, dim_len); | |
190 | if (ret) { | |
191 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | /* dimension */ | |
196 | ret = config_writer_close_element(writer); | |
197 | if (ret) { | |
198 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
199 | goto end; | |
200 | } | |
201 | } | |
202 | ||
203 | /* dimensions */ | |
204 | ret = config_writer_close_element(writer); | |
205 | if (ret) { | |
206 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
207 | goto end; | |
208 | } | |
209 | ||
210 | end: | |
211 | return ret; | |
212 | } | |
213 | ||
214 | ||
55c9e7ca | 215 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
216 | static |
217 | int save_ust_channel_attributes(struct config_writer *writer, | |
218 | struct lttng_ust_channel_attr *attr) | |
219 | { | |
220 | int ret; | |
4fc2b126 | 221 | struct ltt_ust_channel *channel = NULL; |
fb198a11 JG |
222 | |
223 | ret = config_writer_write_element_string(writer, | |
224 | config_element_overwrite_mode, | |
225 | attr->overwrite ? config_overwrite_mode_overwrite : | |
226 | config_overwrite_mode_discard); | |
227 | if (ret) { | |
55c9e7ca | 228 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
229 | goto end; |
230 | } | |
231 | ||
232 | ret = config_writer_write_element_unsigned_int(writer, | |
233 | config_element_subbuf_size, attr->subbuf_size); | |
234 | if (ret) { | |
55c9e7ca | 235 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
236 | goto end; |
237 | } | |
238 | ||
239 | ret = config_writer_write_element_unsigned_int(writer, | |
240 | config_element_num_subbuf, | |
241 | attr->num_subbuf); | |
242 | if (ret) { | |
55c9e7ca | 243 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
244 | goto end; |
245 | } | |
246 | ||
247 | ret = config_writer_write_element_unsigned_int(writer, | |
248 | config_element_switch_timer_interval, | |
249 | attr->switch_timer_interval); | |
250 | if (ret) { | |
55c9e7ca | 251 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
252 | goto end; |
253 | } | |
254 | ||
255 | ret = config_writer_write_element_unsigned_int(writer, | |
256 | config_element_read_timer_interval, | |
257 | attr->read_timer_interval); | |
258 | if (ret) { | |
55c9e7ca | 259 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
260 | goto end; |
261 | } | |
262 | ||
263 | ret = config_writer_write_element_string(writer, | |
264 | config_element_output_type, | |
265 | attr->output == LTTNG_UST_MMAP ? | |
266 | config_output_type_mmap : config_output_type_splice); | |
267 | if (ret) { | |
55c9e7ca | 268 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
269 | goto end; |
270 | } | |
4fc2b126 | 271 | |
275472aa JR |
272 | ret = config_writer_write_element_signed_int(writer, |
273 | config_element_blocking_timeout, | |
274 | attr->u.s.blocking_timeout); | |
275 | if (ret) { | |
55c9e7ca | 276 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
277 | goto end; |
278 | } | |
279 | ||
4fc2b126 JR |
280 | /* |
281 | * Fetch the monitor timer which is located in the parent of | |
282 | * lttng_ust_channel_attr | |
283 | */ | |
284 | channel = caa_container_of(attr, struct ltt_ust_channel, attr); | |
285 | ret = config_writer_write_element_unsigned_int(writer, | |
286 | config_element_monitor_timer_interval, | |
287 | channel->monitor_timer_interval); | |
288 | if (ret) { | |
55c9e7ca | 289 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
290 | goto end; |
291 | } | |
292 | ||
55c9e7ca | 293 | ret = LTTNG_OK; |
fb198a11 | 294 | end: |
55c9e7ca | 295 | return ret; |
fb198a11 JG |
296 | } |
297 | ||
298 | static | |
299 | const char *get_kernel_instrumentation_string( | |
300 | enum lttng_kernel_instrumentation instrumentation) | |
301 | { | |
302 | const char *instrumentation_string; | |
303 | ||
304 | switch (instrumentation) { | |
305 | case LTTNG_KERNEL_ALL: | |
306 | instrumentation_string = config_event_type_all; | |
307 | break; | |
308 | case LTTNG_KERNEL_TRACEPOINT: | |
309 | instrumentation_string = config_event_type_tracepoint; | |
310 | break; | |
311 | case LTTNG_KERNEL_KPROBE: | |
9d82c4c2 | 312 | instrumentation_string = config_event_type_probe; |
fb198a11 | 313 | break; |
c1e83fb4 FD |
314 | case LTTNG_KERNEL_UPROBE: |
315 | instrumentation_string = config_event_type_userspace_probe; | |
316 | break; | |
fb198a11 | 317 | case LTTNG_KERNEL_FUNCTION: |
9d82c4c2 | 318 | instrumentation_string = config_event_type_function_entry; |
fb198a11 JG |
319 | break; |
320 | case LTTNG_KERNEL_KRETPROBE: | |
9d82c4c2 | 321 | instrumentation_string = config_event_type_function; |
fb198a11 JG |
322 | break; |
323 | case LTTNG_KERNEL_NOOP: | |
324 | instrumentation_string = config_event_type_noop; | |
325 | break; | |
326 | case LTTNG_KERNEL_SYSCALL: | |
327 | instrumentation_string = config_event_type_syscall; | |
328 | break; | |
329 | default: | |
330 | instrumentation_string = NULL; | |
331 | } | |
332 | ||
333 | return instrumentation_string; | |
334 | } | |
335 | ||
336 | static | |
337 | const char *get_kernel_context_type_string( | |
338 | enum lttng_kernel_context_type context_type) | |
339 | { | |
340 | const char *context_type_string; | |
341 | ||
342 | switch (context_type) { | |
343 | case LTTNG_KERNEL_CONTEXT_PID: | |
344 | context_type_string = config_event_context_pid; | |
345 | break; | |
346 | case LTTNG_KERNEL_CONTEXT_PROCNAME: | |
347 | context_type_string = config_event_context_procname; | |
348 | break; | |
349 | case LTTNG_KERNEL_CONTEXT_PRIO: | |
350 | context_type_string = config_event_context_prio; | |
351 | break; | |
352 | case LTTNG_KERNEL_CONTEXT_NICE: | |
353 | context_type_string = config_event_context_nice; | |
354 | break; | |
355 | case LTTNG_KERNEL_CONTEXT_VPID: | |
356 | context_type_string = config_event_context_vpid; | |
357 | break; | |
358 | case LTTNG_KERNEL_CONTEXT_TID: | |
359 | context_type_string = config_event_context_tid; | |
360 | break; | |
361 | case LTTNG_KERNEL_CONTEXT_VTID: | |
362 | context_type_string = config_event_context_vtid; | |
363 | break; | |
364 | case LTTNG_KERNEL_CONTEXT_PPID: | |
365 | context_type_string = config_event_context_ppid; | |
366 | break; | |
367 | case LTTNG_KERNEL_CONTEXT_VPPID: | |
368 | context_type_string = config_event_context_vppid; | |
369 | break; | |
370 | case LTTNG_KERNEL_CONTEXT_HOSTNAME: | |
371 | context_type_string = config_event_context_hostname; | |
372 | break; | |
1ae5e83e JD |
373 | case LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE: |
374 | context_type_string = config_event_context_interruptible; | |
375 | break; | |
376 | case LTTNG_KERNEL_CONTEXT_PREEMPTIBLE: | |
377 | context_type_string = config_event_context_preemptible; | |
378 | break; | |
379 | case LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE: | |
380 | context_type_string = config_event_context_need_reschedule; | |
381 | break; | |
382 | case LTTNG_KERNEL_CONTEXT_MIGRATABLE: | |
383 | context_type_string = config_event_context_migratable; | |
384 | break; | |
16c4c991 FD |
385 | case LTTNG_KERNEL_CONTEXT_CALLSTACK_USER: |
386 | context_type_string = config_event_context_callstack_user; | |
387 | break; | |
388 | case LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL: | |
389 | context_type_string = config_event_context_callstack_kernel; | |
390 | break; | |
40e14884 MJ |
391 | case LTTNG_KERNEL_CONTEXT_CGROUP_NS: |
392 | context_type_string = config_event_context_cgroup_ns; | |
393 | break; | |
394 | case LTTNG_KERNEL_CONTEXT_IPC_NS: | |
395 | context_type_string = config_event_context_ipc_ns; | |
396 | break; | |
397 | case LTTNG_KERNEL_CONTEXT_MNT_NS: | |
398 | context_type_string = config_event_context_mnt_ns; | |
399 | break; | |
400 | case LTTNG_KERNEL_CONTEXT_NET_NS: | |
401 | context_type_string = config_event_context_net_ns; | |
402 | break; | |
403 | case LTTNG_KERNEL_CONTEXT_PID_NS: | |
404 | context_type_string = config_event_context_pid_ns; | |
405 | break; | |
d37ac3cd MJ |
406 | case LTTNG_KERNEL_CONTEXT_TIME_NS: |
407 | context_type_string = config_event_context_time_ns; | |
408 | break; | |
40e14884 MJ |
409 | case LTTNG_KERNEL_CONTEXT_USER_NS: |
410 | context_type_string = config_event_context_user_ns; | |
411 | break; | |
412 | case LTTNG_KERNEL_CONTEXT_UTS_NS: | |
413 | context_type_string = config_event_context_uts_ns; | |
414 | break; | |
499cbfa1 MJ |
415 | case LTTNG_KERNEL_CONTEXT_UID: |
416 | context_type_string = config_event_context_uid; | |
417 | break; | |
418 | case LTTNG_KERNEL_CONTEXT_EUID: | |
419 | context_type_string = config_event_context_euid; | |
420 | break; | |
421 | case LTTNG_KERNEL_CONTEXT_SUID: | |
422 | context_type_string = config_event_context_suid; | |
423 | break; | |
424 | case LTTNG_KERNEL_CONTEXT_GID: | |
425 | context_type_string = config_event_context_gid; | |
426 | break; | |
427 | case LTTNG_KERNEL_CONTEXT_EGID: | |
428 | context_type_string = config_event_context_egid; | |
429 | break; | |
430 | case LTTNG_KERNEL_CONTEXT_SGID: | |
431 | context_type_string = config_event_context_sgid; | |
432 | break; | |
433 | case LTTNG_KERNEL_CONTEXT_VUID: | |
434 | context_type_string = config_event_context_vuid; | |
435 | break; | |
436 | case LTTNG_KERNEL_CONTEXT_VEUID: | |
437 | context_type_string = config_event_context_veuid; | |
438 | break; | |
439 | case LTTNG_KERNEL_CONTEXT_VSUID: | |
440 | context_type_string = config_event_context_vsuid; | |
441 | break; | |
442 | case LTTNG_KERNEL_CONTEXT_VGID: | |
443 | context_type_string = config_event_context_vgid; | |
444 | break; | |
445 | case LTTNG_KERNEL_CONTEXT_VEGID: | |
446 | context_type_string = config_event_context_vegid; | |
447 | break; | |
448 | case LTTNG_KERNEL_CONTEXT_VSGID: | |
449 | context_type_string = config_event_context_vsgid; | |
450 | break; | |
fb198a11 JG |
451 | default: |
452 | context_type_string = NULL; | |
453 | } | |
454 | ||
455 | return context_type_string; | |
456 | } | |
457 | ||
458 | static | |
459 | const char *get_ust_context_type_string( | |
460 | enum lttng_ust_context_type context_type) | |
461 | { | |
462 | const char *context_type_string; | |
463 | ||
464 | switch (context_type) { | |
465 | case LTTNG_UST_CONTEXT_PROCNAME: | |
466 | context_type_string = config_event_context_procname; | |
467 | break; | |
468 | case LTTNG_UST_CONTEXT_VPID: | |
469 | context_type_string = config_event_context_vpid; | |
470 | break; | |
471 | case LTTNG_UST_CONTEXT_VTID: | |
472 | context_type_string = config_event_context_vtid; | |
473 | break; | |
474 | case LTTNG_UST_CONTEXT_IP: | |
475 | context_type_string = config_event_context_ip; | |
476 | break; | |
477 | case LTTNG_UST_CONTEXT_PTHREAD_ID: | |
478 | context_type_string = config_event_context_pthread_id; | |
479 | break; | |
045fc617 JG |
480 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
481 | context_type_string = config_event_context_app; | |
482 | break; | |
f17b8732 MJ |
483 | case LTTNG_UST_CONTEXT_CGROUP_NS: |
484 | context_type_string = config_event_context_cgroup_ns; | |
485 | break; | |
486 | case LTTNG_UST_CONTEXT_IPC_NS: | |
487 | context_type_string = config_event_context_ipc_ns; | |
488 | break; | |
489 | case LTTNG_UST_CONTEXT_MNT_NS: | |
490 | context_type_string = config_event_context_mnt_ns; | |
491 | break; | |
492 | case LTTNG_UST_CONTEXT_NET_NS: | |
493 | context_type_string = config_event_context_net_ns; | |
494 | break; | |
d37ac3cd MJ |
495 | case LTTNG_UST_CONTEXT_TIME_NS: |
496 | context_type_string = config_event_context_time_ns; | |
497 | break; | |
f17b8732 MJ |
498 | case LTTNG_UST_CONTEXT_PID_NS: |
499 | context_type_string = config_event_context_pid_ns; | |
500 | break; | |
501 | case LTTNG_UST_CONTEXT_USER_NS: | |
502 | context_type_string = config_event_context_user_ns; | |
503 | break; | |
504 | case LTTNG_UST_CONTEXT_UTS_NS: | |
505 | context_type_string = config_event_context_uts_ns; | |
506 | break; | |
4fc59cb8 MJ |
507 | case LTTNG_UST_CONTEXT_VUID: |
508 | context_type_string = config_event_context_vuid; | |
509 | break; | |
510 | case LTTNG_UST_CONTEXT_VEUID: | |
511 | context_type_string = config_event_context_veuid; | |
512 | break; | |
513 | case LTTNG_UST_CONTEXT_VSUID: | |
514 | context_type_string = config_event_context_vsuid; | |
515 | break; | |
516 | case LTTNG_UST_CONTEXT_VGID: | |
517 | context_type_string = config_event_context_vgid; | |
518 | break; | |
519 | case LTTNG_UST_CONTEXT_VEGID: | |
520 | context_type_string = config_event_context_vegid; | |
521 | break; | |
522 | case LTTNG_UST_CONTEXT_VSGID: | |
523 | context_type_string = config_event_context_vsgid; | |
524 | break; | |
e885a367 | 525 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: |
14ce5bd8 JG |
526 | /* |
527 | * Error, should not be stored in the XML, perf contexts | |
528 | * are stored as a node of type event_perf_context_type. | |
529 | */ | |
fb198a11 JG |
530 | default: |
531 | context_type_string = NULL; | |
e885a367 | 532 | break; |
fb198a11 JG |
533 | } |
534 | ||
535 | return context_type_string; | |
536 | } | |
537 | ||
538 | static | |
539 | const char *get_buffer_type_string( | |
540 | enum lttng_buffer_type buffer_type) | |
541 | { | |
542 | const char *buffer_type_string; | |
543 | ||
544 | switch (buffer_type) { | |
545 | case LTTNG_BUFFER_PER_PID: | |
546 | buffer_type_string = config_buffer_type_per_pid; | |
547 | break; | |
548 | case LTTNG_BUFFER_PER_UID: | |
549 | buffer_type_string = config_buffer_type_per_uid; | |
550 | break; | |
551 | case LTTNG_BUFFER_GLOBAL: | |
552 | buffer_type_string = config_buffer_type_global; | |
553 | break; | |
554 | default: | |
555 | buffer_type_string = NULL; | |
556 | } | |
557 | ||
558 | return buffer_type_string; | |
559 | } | |
560 | ||
561 | static | |
562 | const char *get_loglevel_type_string( | |
563 | enum lttng_ust_loglevel_type loglevel_type) | |
564 | { | |
565 | const char *loglevel_type_string; | |
566 | ||
567 | switch (loglevel_type) { | |
568 | case LTTNG_UST_LOGLEVEL_ALL: | |
569 | loglevel_type_string = config_loglevel_type_all; | |
570 | break; | |
571 | case LTTNG_UST_LOGLEVEL_RANGE: | |
572 | loglevel_type_string = config_loglevel_type_range; | |
573 | break; | |
574 | case LTTNG_UST_LOGLEVEL_SINGLE: | |
575 | loglevel_type_string = config_loglevel_type_single; | |
576 | break; | |
577 | default: | |
578 | loglevel_type_string = NULL; | |
579 | } | |
580 | ||
581 | return loglevel_type_string; | |
582 | } | |
583 | ||
55c9e7ca | 584 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 | 585 | static |
83712c39 FD |
586 | int save_kernel_function_event(struct config_writer *writer, |
587 | struct ltt_kernel_event *event) | |
588 | { | |
589 | int ret; | |
590 | ||
591 | ret = config_writer_open_element(writer, config_element_function_attributes); | |
592 | if (ret) { | |
593 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
594 | goto end; | |
595 | } | |
596 | ||
597 | ret = config_writer_write_element_string(writer, config_element_name, | |
598 | event->event->u.ftrace.symbol_name); | |
599 | if (ret) { | |
600 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
601 | goto end; | |
602 | } | |
603 | ||
604 | /* /function attributes */ | |
605 | ret = config_writer_close_element(writer); | |
606 | if (ret) { | |
607 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
608 | goto end; | |
609 | } | |
610 | end: | |
611 | return ret; | |
612 | } | |
613 | ||
614 | static | |
615 | int save_kernel_kprobe_event(struct config_writer *writer, | |
616 | struct ltt_kernel_event *event) | |
617 | { | |
618 | int ret; | |
619 | const char *symbol_name; | |
620 | uint64_t addr; | |
621 | uint64_t offset; | |
622 | ||
623 | switch (event->event->instrumentation) { | |
624 | case LTTNG_KERNEL_KPROBE: | |
625 | /* | |
626 | * Comments in lttng-kernel.h mention that | |
627 | * either addr or symbol_name are set, not both. | |
628 | */ | |
629 | addr = event->event->u.kprobe.addr; | |
630 | offset = event->event->u.kprobe.offset; | |
631 | symbol_name = addr ? NULL : event->event->u.kprobe.symbol_name; | |
632 | break; | |
633 | case LTTNG_KERNEL_KRETPROBE: | |
634 | addr = event->event->u.kretprobe.addr; | |
635 | offset = event->event->u.kretprobe.offset; | |
c1e83fb4 | 636 | symbol_name = addr ? NULL : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
637 | break; |
638 | default: | |
639 | assert(1); | |
c1e83fb4 FD |
640 | ERR("Unsupported kernel instrumentation type."); |
641 | ret = LTTNG_ERR_INVALID; | |
642 | goto end; | |
83712c39 FD |
643 | } |
644 | ||
645 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
646 | if (ret) { | |
647 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
648 | goto end; | |
649 | } | |
650 | ||
c1e83fb4 FD |
651 | if (addr) { |
652 | ret = config_writer_write_element_unsigned_int( writer, | |
653 | config_element_address, addr); | |
654 | if (ret) { | |
655 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
656 | goto end; | |
657 | } | |
658 | } else if (symbol_name) { | |
83712c39 FD |
659 | ret = config_writer_write_element_string(writer, |
660 | config_element_symbol_name, symbol_name); | |
661 | if (ret) { | |
662 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
663 | goto end; | |
664 | } | |
c1e83fb4 FD |
665 | /* If the offset is non-zero, write it.*/ |
666 | if (offset) { | |
667 | ret = config_writer_write_element_unsigned_int(writer, | |
668 | config_element_offset, offset); | |
669 | if (ret) { | |
670 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
671 | goto end; | |
672 | } | |
673 | } | |
674 | } else { | |
675 | /* | |
676 | * This really should not happen as we are either setting the | |
677 | * address or the symbol above. | |
678 | */ | |
679 | ERR("Invalid probe/function description."); | |
680 | ret = LTTNG_ERR_INVALID; | |
681 | goto end; | |
83712c39 FD |
682 | } |
683 | ||
c1e83fb4 FD |
684 | |
685 | ret = config_writer_close_element(writer); | |
686 | if (ret) { | |
687 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
688 | goto end; | |
689 | } | |
690 | end: | |
691 | return ret; | |
692 | } | |
693 | ||
694 | /* | |
695 | * Save the userspace probe tracepoint event associated with the event to the | |
696 | * config writer. | |
697 | */ | |
698 | static | |
699 | int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, | |
700 | struct ltt_kernel_event *event) | |
701 | { | |
702 | int ret = 0; | |
703 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
704 | const struct lttng_userspace_probe_location *userspace_probe_location; |
705 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
706 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
707 | ||
708 | /* Get userspace probe location from the event. */ | |
709 | userspace_probe_location = event->userspace_probe_location; | |
710 | if (!userspace_probe_location) { | |
711 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
712 | goto end; | |
713 | } | |
714 | ||
715 | /* Get lookup method and lookup method type. */ | |
716 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
717 | if (!lookup_method) { | |
718 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
719 | goto end; | |
720 | } | |
721 | ||
722 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
723 | ||
724 | /* Get the binary path, probe name and provider name. */ | |
725 | binary_path = | |
726 | lttng_userspace_probe_location_tracepoint_get_binary_path( | |
727 | userspace_probe_location); | |
728 | if (!binary_path) { | |
729 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
730 | goto end; | |
731 | } | |
732 | ||
733 | probe_name = | |
734 | lttng_userspace_probe_location_tracepoint_get_probe_name( | |
735 | userspace_probe_location); | |
736 | if (!probe_name) { | |
737 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
738 | goto end; | |
739 | } | |
740 | ||
741 | provider_name = | |
742 | lttng_userspace_probe_location_tracepoint_get_provider_name( | |
743 | userspace_probe_location); | |
744 | if (!provider_name) { | |
745 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
746 | goto end; | |
747 | } | |
748 | ||
749 | /* Open a userspace probe tracepoint attribute. */ | |
750 | ret = config_writer_open_element(writer, config_element_userspace_probe_tracepoint_attributes); | |
751 | if (ret) { | |
752 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
753 | goto end; | |
754 | } | |
755 | ||
756 | switch (lookup_type) { | |
757 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
758 | ret = config_writer_write_element_string(writer, | |
759 | config_element_userspace_probe_lookup, | |
760 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
761 | if (ret) { |
762 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
763 | goto end; | |
764 | } | |
c1e83fb4 FD |
765 | break; |
766 | default: | |
767 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
768 | ret = LTTNG_ERR_INVALID; | |
769 | goto end; | |
83712c39 FD |
770 | } |
771 | ||
c1e83fb4 FD |
772 | /* Write the binary path, provider name and the probe name. */ |
773 | ret = config_writer_write_element_string(writer, | |
774 | config_element_userspace_probe_location_binary_path, | |
775 | binary_path); | |
776 | if (ret) { | |
777 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
778 | goto end; | |
779 | } | |
780 | ||
781 | ret = config_writer_write_element_string(writer, | |
782 | config_element_userspace_probe_tracepoint_location_provider_name, | |
783 | provider_name); | |
784 | if (ret) { | |
785 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
786 | goto end; | |
787 | } | |
788 | ||
789 | ret = config_writer_write_element_string(writer, | |
790 | config_element_userspace_probe_tracepoint_location_probe_name, | |
791 | probe_name); | |
792 | if (ret) { | |
793 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
794 | goto end; | |
795 | } | |
796 | ||
797 | /* Close the userspace probe tracepoint attribute. */ | |
798 | ret = config_writer_close_element(writer); | |
799 | if (ret) { | |
800 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
801 | goto end; | |
802 | } | |
803 | ||
804 | end: | |
805 | return ret; | |
806 | } | |
807 | ||
808 | /* | |
809 | * Save the userspace probe function event associated with the event to the | |
810 | * config writer. | |
811 | */ | |
812 | static | |
813 | int save_kernel_userspace_probe_function_event(struct config_writer *writer, | |
814 | struct ltt_kernel_event *event) | |
815 | { | |
816 | int ret = 0; | |
817 | const char *function_name, *binary_path; | |
87597c2c JG |
818 | const struct lttng_userspace_probe_location *userspace_probe_location; |
819 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
820 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
821 | ||
822 | /* Get userspace probe location from the event. */ | |
823 | userspace_probe_location = event->userspace_probe_location; | |
824 | if (!userspace_probe_location) { | |
825 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
826 | goto end; | |
827 | } | |
828 | ||
829 | /* Get lookup method and lookup method type. */ | |
830 | lookup_method = lttng_userspace_probe_location_get_lookup_method( | |
831 | userspace_probe_location); | |
832 | if (!lookup_method) { | |
833 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
834 | goto end; | |
835 | } | |
836 | ||
837 | /* Get the binary path and the function name. */ | |
838 | binary_path = | |
839 | lttng_userspace_probe_location_function_get_binary_path( | |
840 | userspace_probe_location); | |
841 | if (!binary_path) { | |
842 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
843 | goto end; | |
844 | } | |
845 | ||
846 | function_name = | |
847 | lttng_userspace_probe_location_function_get_function_name( | |
848 | userspace_probe_location); | |
849 | if (!function_name) { | |
850 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
851 | goto end; | |
852 | } | |
853 | ||
854 | /* Open a userspace probe function attribute. */ | |
855 | ret = config_writer_open_element(writer, | |
856 | config_element_userspace_probe_function_attributes); | |
857 | if (ret) { | |
858 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
859 | goto end; | |
860 | } | |
861 | ||
862 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
863 | switch (lookup_type) { | |
864 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
865 | ret = config_writer_write_element_string(writer, | |
866 | config_element_userspace_probe_lookup, | |
867 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
868 | if (ret) { |
869 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
870 | goto end; | |
871 | } | |
c1e83fb4 FD |
872 | break; |
873 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
874 | ret = config_writer_write_element_string(writer, | |
875 | config_element_userspace_probe_lookup, | |
876 | config_element_userspace_probe_lookup_function_default); | |
877 | if (ret) { | |
878 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
879 | goto end; | |
880 | } | |
881 | break; | |
882 | default: | |
883 | ERR("Unsupported kernel userspace probe function lookup method."); | |
884 | ret = LTTNG_ERR_INVALID; | |
885 | goto end; | |
83712c39 FD |
886 | } |
887 | ||
c1e83fb4 FD |
888 | /* Write the binary path and the function name. */ |
889 | ret = config_writer_write_element_string(writer, | |
890 | config_element_userspace_probe_location_binary_path, | |
891 | binary_path); | |
892 | if (ret) { | |
893 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
894 | goto end; | |
895 | } | |
896 | ||
897 | ret = config_writer_write_element_string(writer, | |
898 | config_element_userspace_probe_function_location_function_name, | |
899 | function_name); | |
900 | if (ret) { | |
901 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
902 | goto end; | |
903 | } | |
904 | ||
905 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
906 | ret = config_writer_close_element(writer); |
907 | if (ret) { | |
908 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
909 | goto end; | |
910 | } | |
c1e83fb4 | 911 | |
83712c39 FD |
912 | end: |
913 | return ret; | |
914 | } | |
c1e83fb4 FD |
915 | |
916 | static | |
917 | int save_kernel_userspace_probe_event(struct config_writer *writer, | |
918 | struct ltt_kernel_event *event) | |
919 | { | |
920 | int ret; | |
921 | struct lttng_userspace_probe_location *userspace_probe_location; | |
922 | ||
923 | /* Get userspace probe location from the event. */ | |
924 | userspace_probe_location = event->userspace_probe_location; | |
925 | if (!userspace_probe_location) { | |
926 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
927 | goto end; | |
928 | } | |
929 | ||
930 | switch(lttng_userspace_probe_location_get_type(userspace_probe_location)) { | |
931 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
932 | { | |
933 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
934 | if (ret) { | |
935 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
936 | goto end; | |
937 | } | |
938 | break; | |
939 | } | |
940 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
941 | { | |
942 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
943 | if (ret) { | |
944 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
945 | goto end; | |
946 | } | |
947 | break; | |
948 | } | |
949 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
950 | default: | |
951 | ERR("Unsupported kernel userspace probe location type."); | |
952 | ret = LTTNG_ERR_INVALID; | |
953 | goto end; | |
954 | } | |
955 | ||
956 | end: | |
957 | return ret; | |
958 | } | |
959 | ||
960 | static | |
fb198a11 | 961 | int save_kernel_event(struct config_writer *writer, |
83712c39 | 962 | struct ltt_kernel_event *event) |
fb198a11 JG |
963 | { |
964 | int ret; | |
965 | const char *instrumentation_type; | |
966 | ||
967 | ret = config_writer_open_element(writer, config_element_event); | |
968 | if (ret) { | |
969 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
970 | goto end; | |
971 | } | |
972 | ||
973 | if (event->event->name[0]) { | |
974 | ret = config_writer_write_element_string(writer, | |
975 | config_element_name, event->event->name); | |
976 | if (ret) { | |
977 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
978 | goto end; | |
979 | } | |
980 | } | |
981 | ||
982 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
983 | event->enabled); | |
984 | if (ret) { | |
985 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
986 | goto end; | |
987 | } | |
988 | ||
989 | instrumentation_type = get_kernel_instrumentation_string( | |
990 | event->event->instrumentation); | |
991 | if (!instrumentation_type) { | |
992 | ret = LTTNG_ERR_INVALID; | |
993 | goto end; | |
994 | } | |
995 | ||
996 | ret = config_writer_write_element_string(writer, config_element_type, | |
997 | instrumentation_type); | |
998 | if (ret) { | |
999 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1000 | goto end; | |
1001 | } | |
1002 | ||
911d1560 JG |
1003 | if (event->filter_expression) { |
1004 | ret = config_writer_write_element_string(writer, | |
1005 | config_element_filter, | |
1006 | event->filter_expression); | |
1007 | if (ret) { | |
1008 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1009 | goto end; | |
1010 | } | |
1011 | } | |
1012 | ||
fb198a11 JG |
1013 | if (event->event->instrumentation == LTTNG_KERNEL_FUNCTION || |
1014 | event->event->instrumentation == LTTNG_KERNEL_KPROBE || | |
c1e83fb4 | 1015 | event->event->instrumentation == LTTNG_KERNEL_UPROBE || |
fb198a11 JG |
1016 | event->event->instrumentation == LTTNG_KERNEL_KRETPROBE) { |
1017 | ||
1018 | ret = config_writer_open_element(writer, | |
1019 | config_element_attributes); | |
1020 | if (ret) { | |
1021 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1022 | goto end; | |
1023 | } | |
1024 | ||
1025 | switch (event->event->instrumentation) { | |
0de3eda1 | 1026 | case LTTNG_KERNEL_SYSCALL: |
fb198a11 | 1027 | case LTTNG_KERNEL_FUNCTION: |
83712c39 | 1028 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 1029 | if (ret) { |
fb198a11 JG |
1030 | goto end; |
1031 | } | |
1032 | break; | |
1033 | case LTTNG_KERNEL_KPROBE: | |
1034 | case LTTNG_KERNEL_KRETPROBE: | |
83712c39 | 1035 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 1036 | if (ret) { |
fb198a11 JG |
1037 | goto end; |
1038 | } | |
1039 | break; | |
c1e83fb4 FD |
1040 | case LTTNG_KERNEL_UPROBE: |
1041 | ret = save_kernel_userspace_probe_event(writer, event); | |
1042 | if (ret) { | |
1043 | goto end; | |
1044 | } | |
1045 | break; | |
fb198a11 JG |
1046 | default: |
1047 | ERR("Unsupported kernel instrumentation type."); | |
1048 | ret = LTTNG_ERR_INVALID; | |
1049 | goto end; | |
1050 | } | |
1051 | ||
1052 | /* /attributes */ | |
1053 | ret = config_writer_close_element(writer); | |
1054 | if (ret) { | |
1055 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1056 | goto end; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | /* /event */ | |
1061 | ret = config_writer_close_element(writer); | |
1062 | if (ret) { | |
1063 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1064 | goto end; | |
1065 | } | |
55c9e7ca JR |
1066 | |
1067 | ret = LTTNG_OK; | |
fb198a11 JG |
1068 | end: |
1069 | return ret; | |
1070 | } | |
1071 | ||
55c9e7ca | 1072 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1073 | static |
1074 | int save_kernel_events(struct config_writer *writer, | |
0de3eda1 | 1075 | struct ltt_kernel_channel *kchan) |
fb198a11 JG |
1076 | { |
1077 | int ret; | |
1078 | struct ltt_kernel_event *event; | |
1079 | ||
1080 | ret = config_writer_open_element(writer, config_element_events); | |
1081 | if (ret) { | |
1082 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1083 | goto end; | |
1084 | } | |
1085 | ||
0de3eda1 | 1086 | cds_list_for_each_entry(event, &kchan->events_list.head, list) { |
fb198a11 | 1087 | ret = save_kernel_event(writer, event); |
55c9e7ca | 1088 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1089 | goto end; |
1090 | } | |
1091 | } | |
1092 | ||
1093 | /* /events */ | |
1094 | ret = config_writer_close_element(writer); | |
1095 | if (ret) { | |
1096 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1097 | goto end; | |
1098 | } | |
55c9e7ca JR |
1099 | |
1100 | ret = LTTNG_OK; | |
fb198a11 JG |
1101 | end: |
1102 | return ret; | |
1103 | } | |
1104 | ||
55c9e7ca | 1105 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1106 | static |
1107 | int save_ust_event(struct config_writer *writer, | |
1108 | struct ltt_ust_event *event) | |
1109 | { | |
1110 | int ret; | |
1111 | const char *loglevel_type_string; | |
1112 | ||
1113 | ret = config_writer_open_element(writer, config_element_event); | |
1114 | if (ret) { | |
1115 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1116 | goto end; | |
1117 | } | |
1118 | ||
1119 | if (event->attr.name[0]) { | |
1120 | ret = config_writer_write_element_string(writer, | |
1121 | config_element_name, event->attr.name); | |
1122 | if (ret) { | |
1123 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1124 | goto end; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1129 | event->enabled); | |
1130 | if (ret) { | |
1131 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1132 | goto end; | |
1133 | } | |
1134 | ||
1135 | if (event->attr.instrumentation != LTTNG_UST_TRACEPOINT) { | |
1136 | ERR("Unsupported UST instrumentation type."); | |
1137 | ret = LTTNG_ERR_INVALID; | |
1138 | goto end; | |
1139 | } | |
1140 | ret = config_writer_write_element_string(writer, config_element_type, | |
1141 | config_event_type_tracepoint); | |
1142 | if (ret) { | |
1143 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1144 | goto end; | |
1145 | } | |
1146 | ||
1147 | loglevel_type_string = get_loglevel_type_string( | |
1148 | event->attr.loglevel_type); | |
1149 | if (!loglevel_type_string) { | |
1150 | ERR("Unsupported UST loglevel type."); | |
1151 | ret = LTTNG_ERR_INVALID; | |
1152 | goto end; | |
1153 | } | |
1154 | ||
1155 | ret = config_writer_write_element_string(writer, | |
1156 | config_element_loglevel_type, loglevel_type_string); | |
1157 | if (ret) { | |
1158 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1159 | goto end; | |
1160 | } | |
1161 | ||
1adbdb10 JG |
1162 | /* The log level is irrelevant if no "filtering" is enabled */ |
1163 | if (event->attr.loglevel_type != LTTNG_UST_LOGLEVEL_ALL) { | |
1164 | ret = config_writer_write_element_signed_int(writer, | |
1165 | config_element_loglevel, event->attr.loglevel); | |
1166 | if (ret) { | |
1167 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1168 | goto end; | |
1169 | } | |
fb198a11 JG |
1170 | } |
1171 | ||
1172 | if (event->filter_expression) { | |
1173 | ret = config_writer_write_element_string(writer, | |
1174 | config_element_filter, event->filter_expression); | |
1175 | if (ret) { | |
1176 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1177 | goto end; | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | if (event->exclusion && event->exclusion->count) { | |
1182 | uint32_t i; | |
1183 | ||
1184 | ret = config_writer_open_element(writer, | |
1185 | config_element_exclusions); | |
1186 | if (ret) { | |
1187 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1188 | goto end; | |
1189 | } | |
1190 | ||
1191 | for (i = 0; i < event->exclusion->count; i++) { | |
1192 | ret = config_writer_write_element_string(writer, | |
1193 | config_element_exclusion, | |
d7af3565 PP |
1194 | LTTNG_EVENT_EXCLUSION_NAME_AT( |
1195 | event->exclusion, i)); | |
fb198a11 JG |
1196 | if (ret) { |
1197 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1198 | goto end; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* /exclusions */ | |
1203 | ret = config_writer_close_element(writer); | |
1204 | if (ret) { | |
1205 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1206 | goto end; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* /event */ | |
1211 | ret = config_writer_close_element(writer); | |
1212 | if (ret) { | |
1213 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1214 | goto end; | |
1215 | } | |
55c9e7ca JR |
1216 | |
1217 | ret = LTTNG_OK; | |
fb198a11 JG |
1218 | end: |
1219 | return ret; | |
1220 | } | |
1221 | ||
55c9e7ca | 1222 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1223 | static |
1224 | int save_ust_events(struct config_writer *writer, | |
1225 | struct lttng_ht *events) | |
1226 | { | |
1227 | int ret; | |
1228 | struct ltt_ust_event *event; | |
1229 | struct lttng_ht_node_str *node; | |
1230 | struct lttng_ht_iter iter; | |
1231 | ||
1232 | ret = config_writer_open_element(writer, config_element_events); | |
1233 | if (ret) { | |
1234 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1235 | goto end; | |
1236 | } | |
1237 | ||
1238 | rcu_read_lock(); | |
1239 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { | |
1240 | event = caa_container_of(node, struct ltt_ust_event, node); | |
1241 | ||
af325ba1 JG |
1242 | if (event->internal) { |
1243 | /* Internal events must not be exposed to clients */ | |
1244 | continue; | |
1245 | } | |
fb198a11 | 1246 | ret = save_ust_event(writer, event); |
55c9e7ca | 1247 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1248 | rcu_read_unlock(); |
1249 | goto end; | |
1250 | } | |
1251 | } | |
1252 | rcu_read_unlock(); | |
1253 | ||
1254 | /* /events */ | |
1255 | ret = config_writer_close_element(writer); | |
1256 | if (ret) { | |
1257 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1258 | goto end; | |
1259 | } | |
55c9e7ca JR |
1260 | |
1261 | ret = LTTNG_OK; | |
fb198a11 JG |
1262 | end: |
1263 | return ret; | |
1264 | } | |
1265 | ||
55c9e7ca | 1266 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 | 1267 | static |
0b35b846 | 1268 | int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
51755dc8 JG |
1269 | struct agent_event *agent_event) |
1270 | { | |
55c9e7ca | 1271 | int ret; |
0b35b846 JG |
1272 | enum lttng_ust_loglevel_type ust_loglevel_type; |
1273 | ||
44760c20 | 1274 | ust_event->enabled = AGENT_EVENT_IS_ENABLED(agent_event); |
51755dc8 | 1275 | ust_event->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
d333bdaa MD |
1276 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, |
1277 | LTTNG_SYMBOL_NAME_LEN)) { | |
55c9e7ca | 1278 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1279 | goto end; |
1280 | } | |
0b35b846 JG |
1281 | switch (agent_event->loglevel_type) { |
1282 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
1283 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
1284 | break; | |
1285 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
1286 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
1287 | break; | |
1288 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
1289 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
1290 | break; | |
1291 | default: | |
1292 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1293 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1294 | goto end; |
1295 | } | |
1296 | ||
1297 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1298 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1299 | ust_event->filter_expression = agent_event->filter_expression; |
1300 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1301 | |
1302 | ret = LTTNG_OK; | |
0b35b846 JG |
1303 | end: |
1304 | return ret; | |
51755dc8 JG |
1305 | } |
1306 | ||
55c9e7ca | 1307 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 JG |
1308 | static |
1309 | int save_agent_events(struct config_writer *writer, | |
51755dc8 JG |
1310 | struct agent *agent) |
1311 | { | |
1312 | int ret; | |
1313 | struct lttng_ht_iter iter; | |
1314 | struct lttng_ht_node_str *node; | |
1315 | ||
1316 | ret = config_writer_open_element(writer, config_element_events); | |
1317 | if (ret) { | |
1318 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1319 | goto end; | |
1320 | } | |
1321 | ||
1322 | rcu_read_lock(); | |
1323 | cds_lfht_for_each_entry(agent->events->ht, &iter.iter, node, node) { | |
1324 | int ret; | |
1325 | struct agent_event *agent_event; | |
1326 | struct ltt_ust_event fake_event; | |
1327 | ||
1328 | memset(&fake_event, 0, sizeof(fake_event)); | |
1329 | agent_event = caa_container_of(node, struct agent_event, node); | |
1330 | ||
1331 | /* | |
1332 | * Initialize a fake ust event to reuse the same serialization | |
1333 | * function since UST and agent events contain the same info | |
1334 | * (and one could wonder why they don't reuse the same | |
1335 | * structures...). | |
1336 | */ | |
0b35b846 | 1337 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); |
55c9e7ca | 1338 | if (ret != LTTNG_OK) { |
0b35b846 JG |
1339 | rcu_read_unlock(); |
1340 | goto end; | |
1341 | } | |
51755dc8 | 1342 | ret = save_ust_event(writer, &fake_event); |
55c9e7ca | 1343 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1344 | rcu_read_unlock(); |
1345 | goto end; | |
1346 | } | |
1347 | } | |
1348 | rcu_read_unlock(); | |
1349 | ||
1350 | /* /events */ | |
1351 | ret = config_writer_close_element(writer); | |
1352 | if (ret) { | |
1353 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1354 | goto end; | |
1355 | } | |
55c9e7ca JR |
1356 | |
1357 | ret = LTTNG_OK; | |
51755dc8 JG |
1358 | end: |
1359 | return ret; | |
1360 | } | |
1361 | ||
55c9e7ca | 1362 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1363 | static |
1364 | int save_kernel_context(struct config_writer *writer, | |
1365 | struct lttng_kernel_context *ctx) | |
1366 | { | |
55c9e7ca | 1367 | int ret = LTTNG_OK; |
fb198a11 JG |
1368 | |
1369 | if (!ctx) { | |
1370 | goto end; | |
1371 | } | |
1372 | ||
fb198a11 JG |
1373 | ret = config_writer_open_element(writer, config_element_context); |
1374 | if (ret) { | |
1375 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1376 | goto end; | |
1377 | } | |
1378 | ||
cba45eda | 1379 | if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) { |
045fc617 JG |
1380 | ret = config_writer_open_element(writer, |
1381 | config_element_context_perf); | |
fb198a11 JG |
1382 | if (ret) { |
1383 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1384 | goto end; | |
1385 | } | |
1386 | ||
1387 | ret = config_writer_write_element_unsigned_int(writer, | |
1388 | config_element_type, ctx->u.perf_counter.type); | |
1389 | if (ret) { | |
1390 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1391 | goto end; | |
1392 | } | |
1393 | ||
1394 | ret = config_writer_write_element_unsigned_int(writer, | |
1395 | config_element_config, ctx->u.perf_counter.config); | |
1396 | if (ret) { | |
1397 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1398 | goto end; | |
1399 | } | |
1400 | ||
1401 | ret = config_writer_write_element_string(writer, | |
1402 | config_element_name, ctx->u.perf_counter.name); | |
1403 | if (ret) { | |
1404 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1405 | goto end; | |
1406 | } | |
1407 | ||
1408 | /* /perf */ | |
1409 | ret = config_writer_close_element(writer); | |
1410 | if (ret) { | |
1411 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1412 | goto end; | |
1413 | } | |
1414 | } else { | |
1415 | const char *context_type_string = | |
1416 | get_kernel_context_type_string(ctx->ctx); | |
1417 | ||
1418 | if (!context_type_string) { | |
1419 | ERR("Unsupported kernel context type."); | |
1420 | ret = LTTNG_ERR_INVALID; | |
1421 | goto end; | |
1422 | } | |
1423 | ||
1424 | ret = config_writer_write_element_string(writer, | |
1425 | config_element_type, context_type_string); | |
1426 | if (ret) { | |
1427 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1428 | goto end; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | /* /context */ | |
1433 | ret = config_writer_close_element(writer); | |
1434 | if (ret) { | |
1435 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1436 | goto end; | |
1437 | } | |
1438 | ||
55c9e7ca | 1439 | ret = LTTNG_OK; |
645328ae DG |
1440 | end: |
1441 | return ret; | |
1442 | } | |
1443 | ||
55c9e7ca | 1444 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
645328ae DG |
1445 | static |
1446 | int save_kernel_contexts(struct config_writer *writer, | |
1447 | struct ltt_kernel_channel *kchan) | |
1448 | { | |
1449 | int ret; | |
1450 | struct ltt_kernel_context *ctx; | |
1451 | ||
2aa64052 | 1452 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1453 | ret = LTTNG_OK; |
2aa64052 JG |
1454 | goto end; |
1455 | } | |
1456 | ||
645328ae DG |
1457 | ret = config_writer_open_element(writer, config_element_contexts); |
1458 | if (ret) { | |
1459 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1460 | goto end; | |
1461 | } | |
1462 | ||
1463 | cds_list_for_each_entry(ctx, &kchan->ctx_list, list) { | |
1464 | ret = save_kernel_context(writer, &ctx->ctx); | |
55c9e7ca | 1465 | if (ret != LTTNG_OK) { |
645328ae DG |
1466 | goto end; |
1467 | } | |
1468 | } | |
1469 | ||
fb198a11 JG |
1470 | /* /contexts */ |
1471 | ret = config_writer_close_element(writer); | |
1472 | if (ret) { | |
1473 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1474 | goto end; | |
1475 | } | |
55c9e7ca JR |
1476 | |
1477 | ret = LTTNG_OK; | |
fb198a11 JG |
1478 | end: |
1479 | return ret; | |
1480 | } | |
1481 | ||
55c9e7ca | 1482 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1483 | static |
1484 | int save_ust_context_perf_thread_counter(struct config_writer *writer, | |
1485 | struct ltt_ust_context *ctx) | |
1486 | { | |
1487 | int ret; | |
1488 | ||
1489 | assert(writer); | |
1490 | assert(ctx); | |
1491 | ||
1492 | /* Perf contexts are saved as event_perf_context_type */ | |
1493 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1494 | if (ret) { | |
1495 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1496 | goto end; | |
1497 | } | |
1498 | ||
1499 | ret = config_writer_write_element_unsigned_int(writer, | |
1500 | config_element_type, ctx->ctx.u.perf_counter.type); | |
1501 | if (ret) { | |
1502 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1503 | goto end; | |
1504 | } | |
1505 | ||
1506 | ret = config_writer_write_element_unsigned_int(writer, | |
1507 | config_element_config, ctx->ctx.u.perf_counter.config); | |
1508 | if (ret) { | |
1509 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1510 | goto end; | |
1511 | } | |
1512 | ||
1513 | ret = config_writer_write_element_string(writer, config_element_name, | |
1514 | ctx->ctx.u.perf_counter.name); | |
1515 | if (ret) { | |
1516 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1517 | goto end; | |
1518 | } | |
1519 | ||
1520 | /* /perf */ | |
1521 | ret = config_writer_close_element(writer); | |
1522 | if (ret) { | |
1523 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1524 | goto end; | |
1525 | } | |
55c9e7ca JR |
1526 | |
1527 | ret = LTTNG_OK; | |
045fc617 JG |
1528 | end: |
1529 | return ret; | |
1530 | } | |
1531 | ||
55c9e7ca | 1532 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1533 | static |
1534 | int save_ust_context_app_ctx(struct config_writer *writer, | |
1535 | struct ltt_ust_context *ctx) | |
1536 | { | |
1537 | int ret; | |
1538 | ||
1539 | assert(writer); | |
1540 | assert(ctx); | |
1541 | ||
1542 | /* Application contexts are saved as application_context_type */ | |
1543 | ret = config_writer_open_element(writer, config_element_context_app); | |
1544 | if (ret) { | |
1545 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1546 | goto end; | |
1547 | } | |
1548 | ||
1549 | ret = config_writer_write_element_string(writer, | |
1550 | config_element_context_app_provider_name, | |
1551 | ctx->ctx.u.app_ctx.provider_name); | |
1552 | if (ret) { | |
1553 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1554 | goto end; | |
1555 | } | |
1556 | ||
1557 | ret = config_writer_write_element_string(writer, | |
1558 | config_element_context_app_ctx_name, | |
1559 | ctx->ctx.u.app_ctx.ctx_name); | |
1560 | if (ret) { | |
1561 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1562 | goto end; | |
1563 | } | |
1564 | ||
1565 | /* /app */ | |
1566 | ret = config_writer_close_element(writer); | |
1567 | if (ret) { | |
1568 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1569 | goto end; | |
1570 | } | |
55c9e7ca JR |
1571 | |
1572 | ret = LTTNG_OK; | |
045fc617 JG |
1573 | end: |
1574 | return ret; | |
1575 | } | |
1576 | ||
55c9e7ca | 1577 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1578 | static |
1579 | int save_ust_context_generic(struct config_writer *writer, | |
1580 | struct ltt_ust_context *ctx) | |
1581 | { | |
1582 | int ret; | |
1583 | const char *context_type_string; | |
1584 | ||
1585 | assert(writer); | |
1586 | assert(ctx); | |
1587 | ||
1588 | /* Save context as event_context_type_type */ | |
1589 | context_type_string = get_ust_context_type_string( | |
1590 | ctx->ctx.ctx); | |
1591 | if (!context_type_string) { | |
1592 | ERR("Unsupported UST context type."); | |
1593 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1594 | goto end; | |
1595 | } | |
1596 | ||
1597 | ret = config_writer_write_element_string(writer, | |
1598 | config_element_type, context_type_string); | |
1599 | if (ret) { | |
1600 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1601 | goto end; | |
1602 | } | |
55c9e7ca JR |
1603 | |
1604 | ret = LTTNG_OK; | |
045fc617 JG |
1605 | end: |
1606 | return ret; | |
1607 | } | |
1608 | ||
55c9e7ca | 1609 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1610 | static |
1611 | int save_ust_context(struct config_writer *writer, | |
1612 | struct cds_list_head *ctx_list) | |
1613 | { | |
1614 | int ret; | |
1615 | struct ltt_ust_context *ctx; | |
1616 | ||
1617 | assert(writer); | |
1618 | assert(ctx_list); | |
1619 | ||
1620 | ret = config_writer_open_element(writer, config_element_contexts); | |
1621 | if (ret) { | |
1622 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1623 | goto end; | |
1624 | } | |
1625 | ||
1626 | cds_list_for_each_entry(ctx, ctx_list, list) { | |
fb198a11 JG |
1627 | ret = config_writer_open_element(writer, |
1628 | config_element_context); | |
1629 | if (ret) { | |
1630 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1631 | goto end; | |
1632 | } | |
1633 | ||
045fc617 JG |
1634 | switch (ctx->ctx.ctx) { |
1635 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
1636 | ret = save_ust_context_perf_thread_counter(writer, ctx); | |
1637 | break; | |
1638 | case LTTNG_UST_CONTEXT_APP_CONTEXT: | |
1639 | ret = save_ust_context_app_ctx(writer, ctx); | |
1640 | break; | |
1641 | default: | |
1642 | /* Save generic context. */ | |
1643 | ret = save_ust_context_generic(writer, ctx); | |
1644 | } | |
55c9e7ca | 1645 | if (ret != LTTNG_OK) { |
045fc617 | 1646 | goto end; |
fb198a11 JG |
1647 | } |
1648 | ||
1649 | /* /context */ | |
1650 | ret = config_writer_close_element(writer); | |
1651 | if (ret) { | |
1652 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1653 | goto end; | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* /contexts */ | |
1658 | ret = config_writer_close_element(writer); | |
1659 | if (ret) { | |
1660 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1661 | goto end; | |
1662 | } | |
55c9e7ca JR |
1663 | |
1664 | ret = LTTNG_OK; | |
fb198a11 JG |
1665 | end: |
1666 | return ret; | |
1667 | } | |
1668 | ||
55c9e7ca | 1669 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1670 | static |
1671 | int save_kernel_channel(struct config_writer *writer, | |
1672 | struct ltt_kernel_channel *kchan) | |
1673 | { | |
1674 | int ret; | |
1675 | ||
1676 | assert(writer); | |
1677 | assert(kchan); | |
1678 | ||
1679 | ret = config_writer_open_element(writer, config_element_channel); | |
1680 | if (ret) { | |
1681 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1682 | goto end; | |
1683 | } | |
1684 | ||
1685 | ret = config_writer_write_element_string(writer, config_element_name, | |
1686 | kchan->channel->name); | |
1687 | if (ret) { | |
1688 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1689 | goto end; | |
1690 | } | |
1691 | ||
1692 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1693 | kchan->channel->enabled); | |
1694 | if (ret) { | |
1695 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1696 | goto end; | |
1697 | } | |
1698 | ||
1699 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1700 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1701 | goto end; |
1702 | } | |
1703 | ||
0de3eda1 | 1704 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1705 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1706 | goto end; |
1707 | } | |
1708 | ||
645328ae | 1709 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1710 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1711 | goto end; |
1712 | } | |
1713 | ||
1714 | /* /channel */ | |
1715 | ret = config_writer_close_element(writer); | |
1716 | if (ret) { | |
1717 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1718 | goto end; | |
1719 | } | |
55c9e7ca JR |
1720 | |
1721 | ret = LTTNG_OK; | |
fb198a11 JG |
1722 | end: |
1723 | return ret; | |
1724 | } | |
1725 | ||
c3e68e71 JR |
1726 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
1727 | static | |
1728 | int save_kernel_map(struct config_writer *writer, | |
1729 | struct ltt_kernel_map *kmap) | |
1730 | { | |
1731 | int ret; | |
1732 | const char *map_name = NULL; | |
1733 | enum lttng_map_status map_status; | |
1734 | ||
1735 | assert(writer); | |
1736 | assert(kmap); | |
1737 | ||
1738 | ret = config_writer_open_element(writer, config_element_map); | |
1739 | if (ret) { | |
1740 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1741 | goto end; | |
1742 | } | |
1743 | ||
1744 | map_status = lttng_map_get_name(kmap->map, &map_name); | |
1745 | if (map_status != LTTNG_MAP_STATUS_OK) { | |
1746 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1747 | goto end; | |
1748 | } | |
1749 | ||
1750 | ret = config_writer_write_element_string(writer, config_element_name, | |
1751 | map_name); | |
1752 | if (ret) { | |
1753 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1754 | goto end; | |
1755 | } | |
1756 | ||
1757 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1758 | lttng_map_get_is_enabled(kmap->map)); | |
1759 | if (ret) { | |
1760 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1761 | goto end; | |
1762 | } | |
1763 | ||
1764 | ret = save_map_attributes(writer, kmap->map); | |
1765 | if (ret) { | |
1766 | goto end; | |
1767 | } | |
1768 | ||
1769 | /* map */ | |
1770 | ret = config_writer_close_element(writer); | |
1771 | if (ret) { | |
1772 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1773 | goto end; | |
1774 | } | |
1775 | ||
1776 | ret = LTTNG_OK; | |
1777 | end: | |
1778 | return ret; | |
1779 | } | |
1780 | ||
55c9e7ca | 1781 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1782 | static |
1783 | int save_ust_channel(struct config_writer *writer, | |
1784 | struct ltt_ust_channel *ust_chan, | |
1785 | struct ltt_ust_session *session) | |
1786 | { | |
1787 | int ret; | |
1788 | ||
1789 | assert(writer); | |
1790 | assert(ust_chan); | |
1791 | assert(session); | |
1792 | ||
1793 | ret = config_writer_open_element(writer, config_element_channel); | |
1794 | if (ret) { | |
1795 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1796 | goto end; | |
1797 | } | |
1798 | ||
1799 | ret = config_writer_write_element_string(writer, config_element_name, | |
1800 | ust_chan->name); | |
1801 | if (ret) { | |
1802 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1803 | goto end; | |
1804 | } | |
1805 | ||
1806 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1807 | ust_chan->enabled); | |
1808 | if (ret) { | |
1809 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1810 | goto end; | |
1811 | } | |
1812 | ||
1813 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1814 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1815 | goto end; |
1816 | } | |
1817 | ||
1818 | ret = config_writer_write_element_unsigned_int(writer, | |
1819 | config_element_tracefile_size, ust_chan->tracefile_size); | |
1820 | if (ret) { | |
1821 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1822 | goto end; | |
1823 | } | |
1824 | ||
1825 | ret = config_writer_write_element_unsigned_int(writer, | |
1826 | config_element_tracefile_count, ust_chan->tracefile_count); | |
1827 | if (ret) { | |
1828 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1829 | goto end; | |
1830 | } | |
1831 | ||
1832 | ret = config_writer_write_element_unsigned_int(writer, | |
1833 | config_element_live_timer_interval, | |
1834 | session->live_timer_interval); | |
1835 | if (ret) { | |
1836 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1837 | goto end; | |
1838 | } | |
1839 | ||
51755dc8 JG |
1840 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1841 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1842 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1843 | goto end; |
1844 | } | |
1845 | } else { | |
1846 | struct agent *agent = NULL; | |
1847 | ||
1848 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1849 | if (!agent) { | |
1850 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1851 | ERR("Could not find agent associated to UST subdomain"); | |
1852 | goto end; | |
1853 | } | |
1854 | ||
1855 | /* | |
1856 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1857 | * or Python) don't have any non-internal events. We retrieve | |
1858 | * the "agent" events associated with this channel and serialize | |
1859 | * them. | |
1860 | */ | |
8cd0a98d | 1861 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1862 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1863 | goto end; |
1864 | } | |
fb198a11 JG |
1865 | } |
1866 | ||
1867 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1868 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1869 | goto end; |
1870 | } | |
1871 | ||
1872 | /* /channel */ | |
1873 | ret = config_writer_close_element(writer); | |
1874 | if (ret) { | |
1875 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1876 | goto end; | |
1877 | } | |
55c9e7ca JR |
1878 | |
1879 | ret = LTTNG_OK; | |
fb198a11 JG |
1880 | end: |
1881 | return ret; | |
1882 | } | |
1883 | ||
c3e68e71 JR |
1884 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
1885 | static | |
1886 | int save_ust_map(struct config_writer *writer, | |
1887 | struct ltt_ust_map *ust_map, | |
1888 | struct ltt_ust_session *session) | |
1889 | { | |
1890 | int ret; | |
1891 | ||
1892 | assert(writer); | |
1893 | assert(ust_map); | |
1894 | assert(session); | |
1895 | ||
1896 | ret = config_writer_open_element(writer, config_element_map); | |
1897 | if (ret) { | |
1898 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1899 | goto end; | |
1900 | } | |
1901 | ||
1902 | ret = config_writer_write_element_string(writer, config_element_name, | |
1903 | ust_map->name); | |
1904 | if (ret) { | |
1905 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1906 | goto end; | |
1907 | } | |
1908 | ||
1909 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1910 | ust_map->enabled); | |
1911 | if (ret) { | |
1912 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1913 | goto end; | |
1914 | } | |
1915 | ||
1916 | ret = save_map_attributes(writer, ust_map->map); | |
1917 | if (ret) { | |
1918 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1919 | goto end; | |
1920 | } | |
1921 | ||
1922 | /* /map */ | |
1923 | ret = config_writer_close_element(writer); | |
1924 | if (ret) { | |
1925 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1926 | goto end; | |
1927 | } | |
1928 | ||
1929 | ret = LTTNG_OK; | |
1930 | end: | |
1931 | return ret; | |
1932 | } | |
1933 | ||
55c9e7ca | 1934 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1935 | static |
1936 | int save_kernel_session(struct config_writer *writer, | |
1937 | struct ltt_session *session) | |
1938 | { | |
1939 | int ret; | |
1940 | struct ltt_kernel_channel *kchan; | |
c3e68e71 | 1941 | struct ltt_kernel_map *kmap; |
fb198a11 JG |
1942 | |
1943 | assert(writer); | |
1944 | assert(session); | |
1945 | ||
1946 | ret = config_writer_write_element_string(writer, config_element_type, | |
1947 | config_domain_type_kernel); | |
1948 | if (ret) { | |
1949 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1950 | goto end; | |
1951 | } | |
1952 | ||
1953 | ret = config_writer_write_element_string(writer, | |
1954 | config_element_buffer_type, config_buffer_type_global); | |
1955 | if (ret) { | |
1956 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1957 | goto end; | |
1958 | } | |
1959 | ||
1960 | ret = config_writer_open_element(writer, | |
1961 | config_element_channels); | |
1962 | if (ret) { | |
1963 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1964 | goto end; | |
1965 | } | |
1966 | ||
1967 | cds_list_for_each_entry(kchan, &session->kernel_session->channel_list.head, | |
1968 | list) { | |
1969 | ret = save_kernel_channel(writer, kchan); | |
55c9e7ca | 1970 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1971 | goto end; |
1972 | } | |
1973 | } | |
1974 | ||
c3e68e71 JR |
1975 | cds_list_for_each_entry(kmap, &session->kernel_session->map_list.head, |
1976 | list) { | |
1977 | ret = save_kernel_map(writer, kmap); | |
1978 | if (ret != LTTNG_OK) { | |
1979 | goto end; | |
1980 | } | |
1981 | } | |
1982 | ||
fb198a11 JG |
1983 | /* /channels */ |
1984 | ret = config_writer_close_element(writer); | |
1985 | if (ret) { | |
1986 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1987 | goto end; | |
1988 | } | |
55c9e7ca JR |
1989 | |
1990 | ret = LTTNG_OK; | |
fb198a11 JG |
1991 | end: |
1992 | return ret; | |
1993 | } | |
1994 | ||
1995 | static | |
51755dc8 JG |
1996 | const char *get_config_domain_str(enum lttng_domain_type domain) |
1997 | { | |
1998 | const char *str_dom; | |
1999 | ||
2000 | switch (domain) { | |
2001 | case LTTNG_DOMAIN_KERNEL: | |
2002 | str_dom = config_domain_type_kernel; | |
2003 | break; | |
2004 | case LTTNG_DOMAIN_UST: | |
2005 | str_dom = config_domain_type_ust; | |
2006 | break; | |
2007 | case LTTNG_DOMAIN_JUL: | |
2008 | str_dom = config_domain_type_jul; | |
2009 | break; | |
2010 | case LTTNG_DOMAIN_LOG4J: | |
2011 | str_dom = config_domain_type_log4j; | |
2012 | break; | |
2013 | case LTTNG_DOMAIN_PYTHON: | |
2014 | str_dom = config_domain_type_python; | |
2015 | break; | |
2016 | default: | |
2017 | assert(0); | |
2018 | } | |
2019 | ||
2020 | return str_dom; | |
2021 | } | |
2022 | ||
55c9e7ca | 2023 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 2024 | static int save_process_attr_tracker(struct config_writer *writer, |
55c9e7ca JR |
2025 | struct ltt_session *sess, |
2026 | int domain, | |
159b042f | 2027 | enum lttng_process_attr process_attr) |
e8fcabef | 2028 | { |
55c9e7ca | 2029 | int ret = LTTNG_OK; |
55c9e7ca | 2030 | const char *element_id_tracker, *element_target_id, *element_id; |
159b042f JG |
2031 | const struct process_attr_tracker *tracker; |
2032 | enum lttng_tracking_policy tracking_policy; | |
2033 | struct lttng_process_attr_values *values = NULL; | |
2034 | ||
2035 | switch (process_attr) { | |
2036 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2037 | element_id_tracker = config_element_process_attr_tracker_pid; | |
2038 | element_target_id = config_element_process_attr_pid_value; | |
2039 | element_id = config_element_process_attr_id; | |
2040 | break; | |
2041 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
2042 | element_id_tracker = config_element_process_attr_tracker_vpid; | |
2043 | element_target_id = config_element_process_attr_vpid_value; | |
2044 | element_id = config_element_process_attr_id; | |
2045 | break; | |
2046 | case LTTNG_PROCESS_ATTR_USER_ID: | |
2047 | element_id_tracker = config_element_process_attr_tracker_uid; | |
2048 | element_target_id = config_element_process_attr_uid_value; | |
2049 | element_id = config_element_process_attr_id; | |
2050 | break; | |
2051 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
2052 | element_id_tracker = config_element_process_attr_tracker_vuid; | |
2053 | element_target_id = config_element_process_attr_vuid_value; | |
2054 | element_id = config_element_process_attr_id; | |
2055 | break; | |
2056 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
2057 | element_id_tracker = config_element_process_attr_tracker_gid; | |
2058 | element_target_id = config_element_process_attr_gid_value; | |
2059 | element_id = config_element_process_attr_id; | |
2060 | break; | |
2061 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
2062 | element_id_tracker = config_element_process_attr_tracker_vgid; | |
2063 | element_target_id = config_element_process_attr_vgid_value; | |
2064 | element_id = config_element_process_attr_id; | |
55c9e7ca JR |
2065 | break; |
2066 | default: | |
2067 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2068 | goto end; | |
2069 | } | |
e8fcabef JG |
2070 | |
2071 | switch (domain) { | |
2072 | case LTTNG_DOMAIN_KERNEL: | |
2073 | { | |
159b042f JG |
2074 | tracker = kernel_get_process_attr_tracker( |
2075 | sess->kernel_session, process_attr); | |
2076 | assert(tracker); | |
e8fcabef JG |
2077 | break; |
2078 | } | |
2079 | case LTTNG_DOMAIN_UST: | |
2080 | { | |
159b042f JG |
2081 | tracker = trace_ust_get_process_attr_tracker( |
2082 | sess->ust_session, process_attr); | |
2083 | assert(tracker); | |
e8fcabef JG |
2084 | break; |
2085 | } | |
2086 | case LTTNG_DOMAIN_JUL: | |
2087 | case LTTNG_DOMAIN_LOG4J: | |
2088 | case LTTNG_DOMAIN_PYTHON: | |
2089 | default: | |
159b042f | 2090 | ret = LTTNG_ERR_UNSUPPORTED_DOMAIN; |
e8fcabef JG |
2091 | goto end; |
2092 | } | |
2093 | ||
159b042f JG |
2094 | tracking_policy = process_attr_tracker_get_tracking_policy(tracker); |
2095 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_ALL) { | |
2096 | /* Tracking all, nothing to output. */ | |
2097 | ret = LTTNG_OK; | |
e283e4a0 JR |
2098 | goto end; |
2099 | } | |
a7a533cd | 2100 | |
55c9e7ca JR |
2101 | ret = config_writer_open_element(writer, element_id_tracker); |
2102 | if (ret) { | |
2103 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2104 | goto end; | |
2105 | } | |
2106 | ||
159b042f JG |
2107 | ret = config_writer_open_element( |
2108 | writer, config_element_process_attr_values); | |
55c9e7ca JR |
2109 | if (ret) { |
2110 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2111 | goto end; | |
2112 | } | |
2113 | ||
88ac6301 | 2114 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_SET) { |
159b042f JG |
2115 | unsigned int i, count; |
2116 | enum process_attr_tracker_status status = | |
2117 | process_attr_tracker_get_inclusion_set( | |
2118 | tracker, &values); | |
2119 | ||
2120 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
2121 | ret = LTTNG_ERR_NOMEM; | |
2122 | goto end; | |
2123 | } | |
2124 | ||
2125 | count = _lttng_process_attr_values_get_count(values); | |
2126 | ||
2127 | for (i = 0; i < count; i++) { | |
2128 | unsigned int integral_value = UINT_MAX; | |
2129 | const char *name = NULL; | |
2130 | const struct process_attr_value *value = | |
2131 | lttng_process_attr_tracker_values_get_at_index( | |
2132 | values, i); | |
2133 | ||
2134 | assert(value); | |
2135 | ret = config_writer_open_element( | |
2136 | writer, element_target_id); | |
2137 | if (ret) { | |
a7a533cd JR |
2138 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
2139 | goto end; | |
2140 | } | |
159b042f JG |
2141 | |
2142 | switch (value->type) { | |
2143 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_PID: | |
2144 | integral_value = | |
2145 | (unsigned int) value->value.pid; | |
55c9e7ca | 2146 | break; |
159b042f JG |
2147 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_UID: |
2148 | integral_value = | |
2149 | (unsigned int) value->value.uid; | |
2150 | break; | |
2151 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GID: | |
2152 | integral_value = | |
2153 | (unsigned int) value->value.gid; | |
2154 | break; | |
2155 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME: | |
2156 | name = value->value.user_name; | |
2157 | assert(name); | |
2158 | break; | |
2159 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME: | |
2160 | name = value->value.group_name; | |
2161 | assert(name); | |
55c9e7ca JR |
2162 | break; |
2163 | default: | |
159b042f | 2164 | abort(); |
e8fcabef | 2165 | } |
159b042f JG |
2166 | |
2167 | if (name) { | |
2168 | ret = config_writer_write_element_string(writer, | |
2169 | config_element_name, name); | |
2170 | } else { | |
2171 | ret = config_writer_write_element_unsigned_int( | |
2172 | writer, element_id, | |
2173 | integral_value); | |
e8fcabef | 2174 | } |
159b042f JG |
2175 | |
2176 | if (ret) { | |
2d97a006 JR |
2177 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
2178 | goto end; | |
2179 | } | |
e8fcabef | 2180 | |
55c9e7ca | 2181 | /* /$element_target_id */ |
e8fcabef JG |
2182 | ret = config_writer_close_element(writer); |
2183 | if (ret) { | |
2184 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2185 | goto end; | |
2186 | } | |
2187 | } | |
55c9e7ca | 2188 | } |
e8fcabef | 2189 | |
88ac6301 | 2190 | /* /values */ |
55c9e7ca JR |
2191 | ret = config_writer_close_element(writer); |
2192 | if (ret) { | |
2193 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2194 | goto end; | |
2195 | } | |
e8fcabef | 2196 | |
55c9e7ca JR |
2197 | /* /$element_id_tracker */ |
2198 | ret = config_writer_close_element(writer); | |
2199 | if (ret) { | |
2200 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2201 | goto end; | |
e8fcabef | 2202 | } |
55c9e7ca JR |
2203 | |
2204 | ret = LTTNG_OK; | |
e8fcabef | 2205 | end: |
159b042f | 2206 | lttng_process_attr_values_destroy(values); |
e8fcabef JG |
2207 | return ret; |
2208 | } | |
2209 | ||
55c9e7ca | 2210 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 2211 | static int save_process_attr_trackers(struct config_writer *writer, |
55c9e7ca JR |
2212 | struct ltt_session *sess, |
2213 | int domain) | |
2214 | { | |
2215 | int ret; | |
2216 | ||
2217 | switch (domain) { | |
2218 | case LTTNG_DOMAIN_KERNEL: | |
159b042f JG |
2219 | ret = save_process_attr_tracker(writer, sess, domain, |
2220 | LTTNG_PROCESS_ATTR_PROCESS_ID); | |
2221 | if (ret != LTTNG_OK) { | |
2222 | goto end; | |
2223 | } | |
2224 | ret = save_process_attr_tracker(writer, sess, domain, | |
2225 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
2226 | if (ret != LTTNG_OK) { | |
2227 | goto end; | |
2228 | } | |
2229 | ret = save_process_attr_tracker(writer, sess, domain, | |
2230 | LTTNG_PROCESS_ATTR_USER_ID); | |
2231 | if (ret != LTTNG_OK) { | |
2232 | goto end; | |
2233 | } | |
2234 | ret = save_process_attr_tracker(writer, sess, domain, | |
2235 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
2236 | if (ret != LTTNG_OK) { | |
2237 | goto end; | |
2238 | } | |
2239 | ret = save_process_attr_tracker(writer, sess, domain, | |
2240 | LTTNG_PROCESS_ATTR_GROUP_ID); | |
2241 | if (ret != LTTNG_OK) { | |
2242 | goto end; | |
2243 | } | |
2244 | ret = save_process_attr_tracker(writer, sess, domain, | |
2245 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
2246 | if (ret != LTTNG_OK) { | |
2247 | goto end; | |
2248 | } | |
55c9e7ca JR |
2249 | break; |
2250 | case LTTNG_DOMAIN_UST: | |
159b042f JG |
2251 | ret = save_process_attr_tracker(writer, sess, domain, |
2252 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
2253 | if (ret != LTTNG_OK) { | |
2254 | goto end; | |
2255 | } | |
2256 | ret = save_process_attr_tracker(writer, sess, domain, | |
2257 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
2258 | if (ret != LTTNG_OK) { | |
2259 | goto end; | |
2260 | } | |
2261 | ret = save_process_attr_tracker(writer, sess, domain, | |
2262 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
2263 | if (ret != LTTNG_OK) { | |
2264 | goto end; | |
2265 | } | |
55c9e7ca JR |
2266 | break; |
2267 | default: | |
159b042f | 2268 | ret = LTTNG_ERR_INVALID; |
74675e31 | 2269 | goto end; |
55c9e7ca | 2270 | } |
159b042f JG |
2271 | ret = LTTNG_OK; |
2272 | end: | |
2273 | return ret; | |
55c9e7ca JR |
2274 | } |
2275 | ||
2276 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
51755dc8 JG |
2277 | static |
2278 | int save_ust_domain(struct config_writer *writer, | |
2279 | struct ltt_session *session, enum lttng_domain_type domain) | |
fb198a11 JG |
2280 | { |
2281 | int ret; | |
2282 | struct ltt_ust_channel *ust_chan; | |
c3e68e71 | 2283 | struct ltt_ust_map *ust_map; |
fb198a11 JG |
2284 | const char *buffer_type_string; |
2285 | struct lttng_ht_node_str *node; | |
2286 | struct lttng_ht_iter iter; | |
51755dc8 | 2287 | const char *config_domain_name; |
fb198a11 JG |
2288 | |
2289 | assert(writer); | |
2290 | assert(session); | |
2291 | ||
51755dc8 JG |
2292 | ret = config_writer_open_element(writer, |
2293 | config_element_domain); | |
2294 | if (ret) { | |
2295 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | config_domain_name = get_config_domain_str(domain); | |
2300 | if (!config_domain_name) { | |
2301 | ret = LTTNG_ERR_INVALID; | |
2302 | goto end; | |
2303 | } | |
2304 | ||
2305 | ret = config_writer_write_element_string(writer, | |
2306 | config_element_type, config_domain_name); | |
fb198a11 JG |
2307 | if (ret) { |
2308 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2309 | goto end; | |
2310 | } | |
2311 | ||
2312 | buffer_type_string = get_buffer_type_string( | |
2313 | session->ust_session->buffer_type); | |
2314 | if (!buffer_type_string) { | |
2315 | ERR("Unsupported buffer type."); | |
2316 | ret = LTTNG_ERR_INVALID; | |
2317 | goto end; | |
2318 | } | |
2319 | ||
2320 | ret = config_writer_write_element_string(writer, | |
2321 | config_element_buffer_type, buffer_type_string); | |
2322 | if (ret) { | |
2323 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2324 | goto end; | |
2325 | } | |
2326 | ||
2327 | ret = config_writer_open_element(writer, config_element_channels); | |
2328 | if (ret) { | |
2329 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2330 | goto end; | |
2331 | } | |
2332 | ||
2333 | rcu_read_lock(); | |
2334 | cds_lfht_for_each_entry(session->ust_session->domain_global.channels->ht, | |
2335 | &iter.iter, node, node) { | |
fb198a11 | 2336 | ust_chan = caa_container_of(node, struct ltt_ust_channel, node); |
51755dc8 | 2337 | if (domain == ust_chan->domain) { |
fb198a11 | 2338 | ret = save_ust_channel(writer, ust_chan, session->ust_session); |
55c9e7ca | 2339 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2340 | rcu_read_unlock(); |
2341 | goto end; | |
2342 | } | |
2343 | } | |
2344 | } | |
2345 | rcu_read_unlock(); | |
2346 | ||
2347 | /* /channels */ | |
2348 | ret = config_writer_close_element(writer); | |
2349 | if (ret) { | |
2350 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2351 | goto end; | |
2352 | } | |
51755dc8 | 2353 | |
c3e68e71 JR |
2354 | ret = config_writer_open_element(writer, config_element_maps); |
2355 | if (ret) { | |
2356 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2357 | goto end; | |
2358 | } | |
2359 | rcu_read_lock(); | |
2360 | cds_lfht_for_each_entry(session->ust_session->domain_global.maps->ht, | |
2361 | &iter.iter, node, node) { | |
2362 | ust_map = caa_container_of(node, struct ltt_ust_map, node); | |
2363 | if (domain == LTTNG_DOMAIN_UST) { | |
2364 | ret = save_ust_map(writer, ust_map, session->ust_session); | |
2365 | if (ret != LTTNG_OK) { | |
2366 | rcu_read_unlock(); | |
2367 | goto end; | |
2368 | } | |
2369 | } | |
2370 | } | |
2371 | rcu_read_unlock(); | |
2372 | ||
2373 | /* /maps */ | |
2374 | ret = config_writer_close_element(writer); | |
2375 | if (ret) { | |
2376 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2377 | goto end; | |
2378 | } | |
2379 | ||
e8fcabef | 2380 | if (domain == LTTNG_DOMAIN_UST) { |
159b042f JG |
2381 | ret = config_writer_open_element( |
2382 | writer, config_element_process_attr_trackers); | |
847a5916 JR |
2383 | if (ret) { |
2384 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2385 | goto end; | |
2386 | } | |
2387 | ||
159b042f JG |
2388 | ret = save_process_attr_trackers( |
2389 | writer, session, LTTNG_DOMAIN_UST); | |
55c9e7ca | 2390 | if (ret != LTTNG_OK) { |
847a5916 JR |
2391 | goto end; |
2392 | } | |
2393 | ||
e8fcabef | 2394 | /* /trackers */ |
847a5916 JR |
2395 | ret = config_writer_close_element(writer); |
2396 | if (ret) { | |
55c9e7ca | 2397 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2398 | goto end; |
2399 | } | |
e8fcabef | 2400 | } |
847a5916 | 2401 | |
e8fcabef JG |
2402 | /* /domain */ |
2403 | ret = config_writer_close_element(writer); | |
2404 | if (ret) { | |
2405 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2406 | goto end; | |
847a5916 | 2407 | } |
e8fcabef | 2408 | |
55c9e7ca | 2409 | ret = LTTNG_OK; |
847a5916 | 2410 | end: |
847a5916 JR |
2411 | return ret; |
2412 | } | |
2413 | ||
55c9e7ca | 2414 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2415 | static |
2416 | int save_domains(struct config_writer *writer, struct ltt_session *session) | |
2417 | { | |
55c9e7ca | 2418 | int ret = LTTNG_OK; |
fb198a11 JG |
2419 | |
2420 | assert(writer); | |
2421 | assert(session); | |
2422 | ||
2423 | if (!session->kernel_session && !session->ust_session) { | |
2424 | goto end; | |
2425 | } | |
2426 | ||
2427 | ret = config_writer_open_element(writer, config_element_domains); | |
2428 | if (ret) { | |
2429 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2430 | goto end; | |
2431 | } | |
2432 | ||
fb198a11 JG |
2433 | if (session->kernel_session) { |
2434 | ret = config_writer_open_element(writer, | |
2435 | config_element_domain); | |
2436 | if (ret) { | |
2437 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2438 | goto end; | |
2439 | } | |
2440 | ||
2441 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2442 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2443 | goto end; |
2444 | } | |
2445 | ||
159b042f JG |
2446 | ret = config_writer_open_element( |
2447 | writer, config_element_process_attr_trackers); | |
847a5916 JR |
2448 | if (ret) { |
2449 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2450 | goto end; | |
2451 | } | |
2452 | ||
159b042f JG |
2453 | ret = save_process_attr_trackers( |
2454 | writer, session, LTTNG_DOMAIN_KERNEL); | |
55c9e7ca | 2455 | if (ret != LTTNG_OK) { |
847a5916 JR |
2456 | goto end; |
2457 | } | |
2458 | ||
2459 | /* /trackers */ | |
2460 | ret = config_writer_close_element(writer); | |
2461 | if (ret) { | |
2462 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2463 | goto end; | |
2464 | } | |
fb198a11 JG |
2465 | /* /domain */ |
2466 | ret = config_writer_close_element(writer); | |
2467 | if (ret) { | |
2468 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2469 | goto end; | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | if (session->ust_session) { | |
51755dc8 | 2474 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2475 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2476 | goto end; |
2477 | } | |
2478 | ||
51755dc8 | 2479 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2480 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2481 | goto end; |
2482 | } | |
fb198a11 | 2483 | |
51755dc8 | 2484 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2485 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2486 | goto end; |
2487 | } | |
65d72c41 | 2488 | |
51755dc8 | 2489 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2490 | if (ret != LTTNG_OK) { |
51755dc8 | 2491 | goto end; |
fb198a11 JG |
2492 | } |
2493 | } | |
2494 | ||
2495 | /* /domains */ | |
2496 | ret = config_writer_close_element(writer); | |
2497 | if (ret) { | |
2498 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2499 | goto end; | |
2500 | } | |
55c9e7ca JR |
2501 | |
2502 | ret = LTTNG_OK; | |
fb198a11 JG |
2503 | end: |
2504 | return ret; | |
2505 | } | |
2506 | ||
55c9e7ca | 2507 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2508 | static |
2509 | int save_consumer_output(struct config_writer *writer, | |
2510 | struct consumer_output *output) | |
2511 | { | |
2512 | int ret; | |
2513 | ||
2514 | assert(writer); | |
2515 | assert(output); | |
2516 | ||
2517 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2518 | if (ret) { | |
2519 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2520 | goto end; | |
2521 | } | |
2522 | ||
2523 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
2524 | output->enabled); | |
2525 | if (ret) { | |
2526 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2527 | goto end; | |
2528 | } | |
2529 | ||
2530 | ret = config_writer_open_element(writer, config_element_destination); | |
2531 | if (ret) { | |
2532 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2533 | goto end; | |
2534 | } | |
2535 | ||
2536 | switch (output->type) { | |
2537 | case CONSUMER_DST_LOCAL: | |
2538 | ret = config_writer_write_element_string(writer, | |
366a9222 | 2539 | config_element_path, output->dst.session_root_path); |
fb198a11 JG |
2540 | if (ret) { |
2541 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2542 | goto end; | |
2543 | } | |
2544 | break; | |
2545 | case CONSUMER_DST_NET: | |
2546 | { | |
2547 | char *uri; | |
2548 | ||
2549 | uri = zmalloc(PATH_MAX); | |
2550 | if (!uri) { | |
2551 | ret = LTTNG_ERR_NOMEM; | |
2552 | goto end; | |
2553 | } | |
2554 | ||
2555 | ret = config_writer_open_element(writer, config_element_net_output); | |
2556 | if (ret) { | |
2557 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2558 | goto end_net_output; | |
2559 | } | |
2560 | ||
2561 | if (output->dst.net.control_isset && | |
2562 | output->dst.net.data_isset) { | |
2563 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); | |
2564 | if (ret < 0) { | |
2565 | ret = LTTNG_ERR_INVALID; | |
2566 | goto end_net_output; | |
2567 | } | |
2568 | ||
2569 | ret = config_writer_write_element_string(writer, | |
2570 | config_element_control_uri, uri); | |
2571 | if (ret) { | |
2572 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2573 | goto end_net_output; | |
2574 | } | |
2575 | ||
2576 | ret = uri_to_str_url(&output->dst.net.data, uri, PATH_MAX); | |
2577 | if (ret < 0) { | |
2578 | ret = LTTNG_ERR_INVALID; | |
2579 | goto end_net_output; | |
2580 | } | |
2581 | ||
2582 | ret = config_writer_write_element_string(writer, | |
2583 | config_element_data_uri, uri); | |
2584 | if (ret) { | |
2585 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2586 | goto end_net_output; | |
2587 | } | |
55c9e7ca | 2588 | ret = LTTNG_OK; |
fb198a11 JG |
2589 | end_net_output: |
2590 | free(uri); | |
55c9e7ca | 2591 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2592 | goto end; |
2593 | } | |
2594 | } else { | |
2595 | ret = !output->dst.net.control_isset ? | |
2596 | LTTNG_ERR_URL_CTRL_MISS : | |
2597 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2598 | free(uri); |
fb198a11 JG |
2599 | goto end; |
2600 | } | |
2601 | ||
2602 | ret = config_writer_close_element(writer); | |
2603 | if (ret) { | |
2604 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2605 | goto end; | |
2606 | } | |
2607 | break; | |
2608 | } | |
2609 | default: | |
2610 | ERR("Unsupported consumer output type."); | |
2611 | ret = LTTNG_ERR_INVALID; | |
2612 | goto end; | |
2613 | } | |
2614 | ||
2615 | /* /destination */ | |
2616 | ret = config_writer_close_element(writer); | |
2617 | if (ret) { | |
2618 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2619 | goto end; | |
2620 | } | |
2621 | ||
2622 | /* /consumer_output */ | |
2623 | ret = config_writer_close_element(writer); | |
2624 | if (ret) { | |
2625 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2626 | goto end; | |
2627 | } | |
55c9e7ca JR |
2628 | |
2629 | ret = LTTNG_OK; | |
fb198a11 JG |
2630 | end: |
2631 | return ret; | |
2632 | } | |
2633 | ||
55c9e7ca | 2634 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2635 | static |
2636 | int save_snapshot_outputs(struct config_writer *writer, | |
2637 | struct snapshot *snapshot) | |
2638 | { | |
2639 | int ret; | |
2640 | struct lttng_ht_iter iter; | |
2641 | struct snapshot_output *output; | |
2642 | ||
2643 | assert(writer); | |
2644 | assert(snapshot); | |
2645 | ||
2646 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2647 | if (ret) { | |
2648 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2649 | goto end; | |
2650 | } | |
2651 | ||
2652 | rcu_read_lock(); | |
2653 | cds_lfht_for_each_entry(snapshot->output_ht->ht, &iter.iter, output, | |
2654 | node.node) { | |
2655 | ret = config_writer_open_element(writer, | |
2656 | config_element_output); | |
2657 | if (ret) { | |
2658 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2659 | goto end_unlock; | |
2660 | } | |
2661 | ||
2662 | ret = config_writer_write_element_string(writer, | |
2663 | config_element_name, output->name); | |
2664 | if (ret) { | |
2665 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2666 | goto end_unlock; | |
2667 | } | |
2668 | ||
2669 | ret = config_writer_write_element_unsigned_int(writer, | |
2670 | config_element_max_size, output->max_size); | |
2671 | if (ret) { | |
2672 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2673 | goto end_unlock; | |
2674 | } | |
2675 | ||
2676 | ret = save_consumer_output(writer, output->consumer); | |
55c9e7ca | 2677 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2678 | goto end_unlock; |
2679 | } | |
2680 | ||
2681 | /* /output */ | |
2682 | ret = config_writer_close_element(writer); | |
2683 | if (ret) { | |
2684 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2685 | goto end_unlock; | |
2686 | } | |
2687 | } | |
2688 | rcu_read_unlock(); | |
2689 | ||
2690 | /* /snapshot_outputs */ | |
2691 | ret = config_writer_close_element(writer); | |
2692 | if (ret) { | |
2693 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2694 | goto end; | |
2695 | } | |
2696 | ||
55c9e7ca | 2697 | ret = LTTNG_OK; |
fb198a11 JG |
2698 | end: |
2699 | return ret; | |
2700 | end_unlock: | |
2701 | rcu_read_unlock(); | |
2702 | return ret; | |
2703 | } | |
2704 | ||
55c9e7ca | 2705 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2706 | static |
2707 | int save_session_output(struct config_writer *writer, | |
2708 | struct ltt_session *session) | |
2709 | { | |
2710 | int ret; | |
2711 | ||
2712 | assert(writer); | |
2713 | assert(session); | |
2714 | ||
2715 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
2716 | (!session->snapshot_mode && !session->consumer)) { | |
2717 | /* Session is in no output mode */ | |
55c9e7ca | 2718 | ret = LTTNG_OK; |
fb198a11 JG |
2719 | goto end; |
2720 | } | |
2721 | ||
2722 | ret = config_writer_open_element(writer, config_element_output); | |
2723 | if (ret) { | |
2724 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2725 | goto end; | |
2726 | } | |
2727 | ||
2728 | if (session->snapshot_mode) { | |
2729 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2730 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2731 | goto end; |
2732 | } | |
2733 | } else { | |
2734 | if (session->consumer) { | |
2735 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2736 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2737 | goto end; |
2738 | } | |
2739 | } | |
2740 | } | |
2741 | ||
2742 | /* /output */ | |
2743 | ret = config_writer_close_element(writer); | |
2744 | if (ret) { | |
2745 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2746 | goto end; | |
2747 | } | |
55c9e7ca | 2748 | ret = LTTNG_OK; |
fb198a11 JG |
2749 | end: |
2750 | return ret; | |
2751 | } | |
2752 | ||
ce6176f2 JG |
2753 | static |
2754 | int save_session_rotation_schedule(struct config_writer *writer, | |
2755 | enum lttng_rotation_schedule_type type, uint64_t value) | |
2756 | { | |
2757 | int ret = 0; | |
2758 | const char *element_name; | |
2759 | const char *value_name; | |
2760 | ||
2761 | switch (type) { | |
2762 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2763 | element_name = config_element_rotation_schedule_periodic; | |
2764 | value_name = config_element_rotation_schedule_periodic_time_us; | |
2765 | break; | |
2766 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2767 | element_name = config_element_rotation_schedule_size_threshold; | |
2768 | value_name = config_element_rotation_schedule_size_threshold_bytes; | |
2769 | break; | |
2770 | default: | |
2771 | ret = -1; | |
2772 | goto end; | |
2773 | } | |
2774 | ||
2775 | ret = config_writer_open_element(writer, element_name); | |
2776 | if (ret) { | |
2777 | goto end; | |
2778 | } | |
2779 | ||
2780 | ret = config_writer_write_element_unsigned_int(writer, | |
2781 | value_name, value); | |
2782 | if (ret) { | |
2783 | goto end; | |
2784 | } | |
2785 | ||
2786 | /* Close schedule descriptor element. */ | |
2787 | ret = config_writer_close_element(writer); | |
2788 | if (ret) { | |
2789 | goto end; | |
2790 | } | |
2791 | end: | |
2792 | return ret; | |
2793 | } | |
2794 | ||
2795 | static | |
2796 | int save_session_rotation_schedules(struct config_writer *writer, | |
2797 | struct ltt_session *session) | |
2798 | { | |
2799 | int ret; | |
2800 | ||
2801 | ret = config_writer_open_element(writer, | |
2802 | config_element_rotation_schedules); | |
f829d17a JG |
2803 | if (ret) { |
2804 | goto end; | |
2805 | } | |
ce6176f2 JG |
2806 | if (session->rotate_timer_period) { |
2807 | ret = save_session_rotation_schedule(writer, | |
2808 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, | |
2809 | session->rotate_timer_period); | |
2810 | if (ret) { | |
2811 | goto close_schedules; | |
2812 | } | |
2813 | } | |
2814 | if (session->rotate_size) { | |
2815 | ret = save_session_rotation_schedule(writer, | |
2816 | LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, | |
2817 | session->rotate_size); | |
2818 | if (ret) { | |
2819 | goto close_schedules; | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | close_schedules: | |
2824 | /* Close rotation schedules element. */ | |
2825 | ret = config_writer_close_element(writer); | |
2826 | if (ret) { | |
2827 | goto end; | |
2828 | } | |
2829 | end: | |
2830 | return ret; | |
2831 | } | |
2832 | ||
fb198a11 JG |
2833 | /* |
2834 | * Save the given session. | |
2835 | * | |
55c9e7ca | 2836 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 JG |
2837 | */ |
2838 | static | |
2839 | int save_session(struct ltt_session *session, | |
2840 | struct lttng_save_session_attr *attr, lttng_sock_cred *creds) | |
2841 | { | |
b45f9ad2 | 2842 | int ret, fd = -1; |
511653c3 | 2843 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 JG |
2844 | size_t len; |
2845 | struct config_writer *writer = NULL; | |
2846 | size_t session_name_len; | |
2847 | const char *provided_path; | |
f376ad9c | 2848 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 JG |
2849 | |
2850 | assert(session); | |
2851 | assert(attr); | |
2852 | assert(creds); | |
2853 | ||
2854 | session_name_len = strlen(session->name); | |
95a29ab8 | 2855 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 JG |
2856 | |
2857 | if (!session_access_ok(session, | |
d7b377ed | 2858 | LTTNG_SOCK_GET_UID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2859 | ret = LTTNG_ERR_EPERM; |
2860 | goto end; | |
2861 | } | |
2862 | ||
2863 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2864 | if (provided_path) { | |
95a29ab8 | 2865 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2866 | len = strlen(provided_path); |
d2992717 | 2867 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2868 | ret = LTTNG_ERR_SET_URL; |
2869 | goto end; | |
2870 | } | |
511653c3 | 2871 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2872 | } else { |
7e078ad1 | 2873 | ssize_t ret_len; |
fb198a11 JG |
2874 | char *home_dir = utils_get_user_home_dir( |
2875 | LTTNG_SOCK_GET_UID_CRED(creds)); | |
2876 | if (!home_dir) { | |
2877 | ret = LTTNG_ERR_SET_URL; | |
2878 | goto end; | |
2879 | } | |
2880 | ||
d2992717 | 2881 | ret_len = snprintf(config_file_path, sizeof(config_file_path), |
fb198a11 JG |
2882 | DEFAULT_SESSION_HOME_CONFIGPATH, home_dir); |
2883 | free(home_dir); | |
7e078ad1 | 2884 | if (ret_len < 0) { |
fb198a11 JG |
2885 | PERROR("snprintf save session"); |
2886 | ret = LTTNG_ERR_SET_URL; | |
2887 | goto end; | |
2888 | } | |
7e078ad1 | 2889 | len = ret_len; |
fb198a11 JG |
2890 | } |
2891 | ||
2892 | /* | |
d2992717 DG |
2893 | * Check the path fits in the config file path dst including the '/' |
2894 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2895 | */ |
d2992717 DG |
2896 | if ((len + session_name_len + 2 + |
2897 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) | |
2898 | > sizeof(config_file_path)) { | |
fb198a11 JG |
2899 | ret = LTTNG_ERR_SET_URL; |
2900 | goto end; | |
2901 | } | |
2902 | ||
2903 | ret = run_as_mkdir_recursive(config_file_path, S_IRWXU | S_IRWXG, | |
2904 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2905 | if (ret) { | |
2906 | ret = LTTNG_ERR_SET_URL; | |
2907 | goto end; | |
2908 | } | |
2909 | ||
d2992717 DG |
2910 | /* |
2911 | * At this point, we know that everything fits in the buffer. Validation | |
2912 | * was done just above. | |
2913 | */ | |
fb198a11 | 2914 | config_file_path[len++] = '/'; |
511653c3 | 2915 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2916 | len += session_name_len; |
2917 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2918 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2919 | config_file_path[len] = '\0'; | |
fb198a11 | 2920 | |
f376ad9c JG |
2921 | if (!attr->overwrite) { |
2922 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2923 | } |
2924 | ||
f376ad9c | 2925 | fd = run_as_open(config_file_path, file_open_flags, |
fb198a11 JG |
2926 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, |
2927 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2928 | if (fd < 0) { | |
2929 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2930 | switch (errno) { |
2931 | case EEXIST: | |
2932 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2933 | break; | |
2934 | case EACCES: | |
2935 | ret = LTTNG_ERR_EPERM; | |
2936 | break; | |
2937 | default: | |
2938 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2939 | break; | |
2940 | } | |
fb198a11 JG |
2941 | goto end; |
2942 | } | |
2943 | ||
705bb62f | 2944 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2945 | if (!writer) { |
2946 | ret = LTTNG_ERR_NOMEM; | |
2947 | goto end; | |
2948 | } | |
2949 | ||
2950 | ret = config_writer_open_element(writer, config_element_sessions); | |
2951 | if (ret) { | |
2952 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2953 | goto end; | |
2954 | } | |
2955 | ||
2956 | ret = config_writer_open_element(writer, config_element_session); | |
2957 | if (ret) { | |
2958 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2959 | goto end; | |
2960 | } | |
2961 | ||
2962 | ret = config_writer_write_element_string(writer, config_element_name, | |
2963 | session->name); | |
2964 | if (ret) { | |
2965 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2966 | goto end; | |
2967 | } | |
2968 | ||
55c9e7ca | 2969 | if (session->shm_path[0] != '\0') { |
9e7c9f56 JR |
2970 | ret = config_writer_write_element_string(writer, |
2971 | config_element_shared_memory_path, | |
2972 | session->shm_path); | |
2973 | if (ret) { | |
2974 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2975 | goto end; | |
2976 | } | |
2977 | } | |
2978 | ||
fb198a11 | 2979 | ret = save_domains(writer, session); |
55c9e7ca | 2980 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2981 | goto end; |
2982 | } | |
2983 | ||
2984 | ret = config_writer_write_element_bool(writer, config_element_started, | |
8382cf6f | 2985 | session->active); |
fb198a11 JG |
2986 | if (ret) { |
2987 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2988 | goto end; | |
2989 | } | |
2990 | ||
329f3443 JD |
2991 | if (session->snapshot_mode || session->live_timer || |
2992 | session->rotate_timer_period || session->rotate_size) { | |
fb198a11 JG |
2993 | ret = config_writer_open_element(writer, config_element_attributes); |
2994 | if (ret) { | |
2995 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2996 | goto end; | |
2997 | } | |
2998 | ||
2999 | if (session->snapshot_mode) { | |
3000 | ret = config_writer_write_element_bool(writer, | |
3001 | config_element_snapshot_mode, 1); | |
3002 | if (ret) { | |
3003 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3004 | goto end; | |
3005 | } | |
329f3443 | 3006 | } else if (session->live_timer) { |
d98ad589 | 3007 | ret = config_writer_write_element_unsigned_int(writer, |
fb198a11 JG |
3008 | config_element_live_timer_interval, session->live_timer); |
3009 | if (ret) { | |
3010 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3011 | goto end; | |
3012 | } | |
3013 | } | |
ce6176f2 JG |
3014 | if (session->rotate_timer_period || session->rotate_size) { |
3015 | ret = save_session_rotation_schedules(writer, | |
3016 | session); | |
329f3443 JD |
3017 | if (ret) { |
3018 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3019 | goto end; | |
3020 | } | |
3021 | } | |
fb198a11 JG |
3022 | |
3023 | /* /attributes */ | |
3024 | ret = config_writer_close_element(writer); | |
3025 | if (ret) { | |
3026 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3027 | goto end; | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | ret = save_session_output(writer, session); | |
55c9e7ca | 3032 | if (ret != LTTNG_OK) { |
fb198a11 JG |
3033 | goto end; |
3034 | } | |
3035 | ||
3036 | /* /session */ | |
3037 | ret = config_writer_close_element(writer); | |
3038 | if (ret) { | |
3039 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3040 | goto end; | |
3041 | } | |
3042 | ||
3043 | /* /sessions */ | |
3044 | ret = config_writer_close_element(writer); | |
3045 | if (ret) { | |
3046 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
3047 | goto end; | |
3048 | } | |
55c9e7ca JR |
3049 | |
3050 | ret = LTTNG_OK; | |
fb198a11 JG |
3051 | end: |
3052 | if (writer && config_writer_destroy(writer)) { | |
3053 | /* Preserve the original error code */ | |
55c9e7ca | 3054 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 3055 | } |
55c9e7ca | 3056 | if (ret != LTTNG_OK) { |
fb198a11 | 3057 | /* Delete file in case of error */ |
b45f9ad2 | 3058 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
3059 | PERROR("Unlinking XML session configuration."); |
3060 | } | |
3061 | } | |
3062 | ||
b45f9ad2 | 3063 | if (fd >= 0) { |
55c9e7ca JR |
3064 | int closeret; |
3065 | ||
3066 | closeret = close(fd); | |
3067 | if (closeret) { | |
1d12100d JR |
3068 | PERROR("Closing XML session configuration"); |
3069 | } | |
3070 | } | |
3071 | ||
fb198a11 JG |
3072 | return ret; |
3073 | } | |
3074 | ||
3075 | int cmd_save_sessions(struct lttng_save_session_attr *attr, | |
3076 | lttng_sock_cred *creds) | |
3077 | { | |
3078 | int ret; | |
3079 | const char *session_name; | |
3080 | struct ltt_session *session; | |
3081 | ||
3082 | session_lock_list(); | |
3083 | ||
3084 | session_name = lttng_save_session_attr_get_session_name(attr); | |
3085 | if (session_name) { | |
3086 | session = session_find_by_name(session_name); | |
3087 | if (!session) { | |
3088 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
3089 | goto end; | |
3090 | } | |
3091 | ||
3092 | session_lock(session); | |
3093 | ret = save_session(session, attr, creds); | |
3094 | session_unlock(session); | |
e32d7f27 | 3095 | session_put(session); |
55c9e7ca | 3096 | if (ret != LTTNG_OK) { |
fb198a11 JG |
3097 | goto end; |
3098 | } | |
3099 | } else { | |
3100 | struct ltt_session_list *list = session_get_list(); | |
3101 | ||
3102 | cds_list_for_each_entry(session, &list->head, list) { | |
e32d7f27 JG |
3103 | if (!session_get(session)) { |
3104 | continue; | |
3105 | } | |
fb198a11 JG |
3106 | session_lock(session); |
3107 | ret = save_session(session, attr, creds); | |
3108 | session_unlock(session); | |
e32d7f27 | 3109 | session_put(session); |
fb198a11 | 3110 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 3111 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
3112 | goto end; |
3113 | } | |
3114 | } | |
3115 | } | |
3116 | ret = LTTNG_OK; | |
3117 | ||
3118 | end: | |
3119 | session_unlock_list(); | |
3120 | return ret; | |
3121 | } |