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