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fb198a11 JG |
1 | /* |
2 | * Copyright (C) 2014 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
fb198a11 JG |
19 | #include <assert.h> |
20 | #include <inttypes.h> | |
21 | #include <string.h> | |
22 | #include <urcu/uatomic.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | #include <common/defaults.h> | |
26 | #include <common/error.h> | |
f40ef1d5 | 27 | #include <common/config/session-config.h> |
fb198a11 JG |
28 | #include <common/utils.h> |
29 | #include <common/runas.h> | |
30 | #include <lttng/save-internal.h> | |
31 | ||
847a5916 | 32 | #include "kernel.h" |
fb198a11 JG |
33 | #include "save.h" |
34 | #include "session.h" | |
0dbc2034 | 35 | #include "lttng-syscall.h" |
fb198a11 | 36 | #include "trace-ust.h" |
51755dc8 | 37 | #include "agent.h" |
fb198a11 | 38 | |
55c9e7ca | 39 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
40 | static |
41 | int save_kernel_channel_attributes(struct config_writer *writer, | |
42 | struct lttng_channel_attr *attr) | |
43 | { | |
44 | int ret; | |
45 | ||
46 | ret = config_writer_write_element_string(writer, | |
47 | config_element_overwrite_mode, | |
48 | attr->overwrite ? config_overwrite_mode_overwrite : | |
49 | config_overwrite_mode_discard); | |
50 | if (ret) { | |
55c9e7ca | 51 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
52 | goto end; |
53 | } | |
54 | ||
55 | ret = config_writer_write_element_unsigned_int(writer, | |
56 | config_element_subbuf_size, attr->subbuf_size); | |
57 | if (ret) { | |
55c9e7ca | 58 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
59 | goto end; |
60 | } | |
61 | ||
62 | ret = config_writer_write_element_unsigned_int(writer, | |
63 | config_element_num_subbuf, | |
64 | attr->num_subbuf); | |
65 | if (ret) { | |
55c9e7ca | 66 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
67 | goto end; |
68 | } | |
69 | ||
70 | ret = config_writer_write_element_unsigned_int(writer, | |
71 | config_element_switch_timer_interval, | |
72 | attr->switch_timer_interval); | |
73 | if (ret) { | |
55c9e7ca | 74 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
75 | goto end; |
76 | } | |
77 | ||
78 | ret = config_writer_write_element_unsigned_int(writer, | |
79 | config_element_read_timer_interval, | |
80 | attr->read_timer_interval); | |
81 | if (ret) { | |
55c9e7ca | 82 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
83 | goto end; |
84 | } | |
85 | ||
86 | ret = config_writer_write_element_string(writer, | |
87 | config_element_output_type, | |
88 | attr->output == LTTNG_EVENT_SPLICE ? | |
89 | config_output_type_splice : config_output_type_mmap); | |
90 | if (ret) { | |
55c9e7ca | 91 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
92 | goto end; |
93 | } | |
94 | ||
95 | ret = config_writer_write_element_unsigned_int(writer, | |
96 | config_element_tracefile_size, attr->tracefile_size); | |
97 | if (ret) { | |
55c9e7ca | 98 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
99 | goto end; |
100 | } | |
101 | ||
102 | ret = config_writer_write_element_unsigned_int(writer, | |
103 | config_element_tracefile_count, | |
104 | attr->tracefile_count); | |
105 | if (ret) { | |
55c9e7ca | 106 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
107 | goto end; |
108 | } | |
109 | ||
110 | ret = config_writer_write_element_unsigned_int(writer, | |
111 | config_element_live_timer_interval, | |
112 | attr->live_timer_interval); | |
113 | if (ret) { | |
55c9e7ca | 114 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
115 | goto end; |
116 | } | |
4fc2b126 JR |
117 | |
118 | if (attr->extended.ptr) { | |
119 | struct lttng_channel_extended *ext = NULL; | |
120 | ||
121 | ext = (struct lttng_channel_extended *) attr->extended.ptr; | |
122 | ret = config_writer_write_element_unsigned_int(writer, | |
123 | config_element_monitor_timer_interval, | |
124 | ext->monitor_timer_interval); | |
125 | if (ret) { | |
55c9e7ca | 126 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
127 | goto end; |
128 | } | |
275472aa JR |
129 | |
130 | ret = config_writer_write_element_signed_int(writer, | |
131 | config_element_blocking_timeout, | |
132 | ext->blocking_timeout); | |
133 | if (ret) { | |
55c9e7ca | 134 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
135 | goto end; |
136 | } | |
4fc2b126 JR |
137 | } |
138 | ||
55c9e7ca | 139 | ret = LTTNG_OK; |
fb198a11 | 140 | end: |
55c9e7ca | 141 | return ret; |
fb198a11 JG |
142 | } |
143 | ||
55c9e7ca | 144 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
145 | static |
146 | int save_ust_channel_attributes(struct config_writer *writer, | |
147 | struct lttng_ust_channel_attr *attr) | |
148 | { | |
149 | int ret; | |
4fc2b126 | 150 | struct ltt_ust_channel *channel = NULL; |
fb198a11 JG |
151 | |
152 | ret = config_writer_write_element_string(writer, | |
153 | config_element_overwrite_mode, | |
154 | attr->overwrite ? config_overwrite_mode_overwrite : | |
155 | config_overwrite_mode_discard); | |
156 | if (ret) { | |
55c9e7ca | 157 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
158 | goto end; |
159 | } | |
160 | ||
161 | ret = config_writer_write_element_unsigned_int(writer, | |
162 | config_element_subbuf_size, attr->subbuf_size); | |
163 | if (ret) { | |
55c9e7ca | 164 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
165 | goto end; |
166 | } | |
167 | ||
168 | ret = config_writer_write_element_unsigned_int(writer, | |
169 | config_element_num_subbuf, | |
170 | attr->num_subbuf); | |
171 | if (ret) { | |
55c9e7ca | 172 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
173 | goto end; |
174 | } | |
175 | ||
176 | ret = config_writer_write_element_unsigned_int(writer, | |
177 | config_element_switch_timer_interval, | |
178 | attr->switch_timer_interval); | |
179 | if (ret) { | |
55c9e7ca | 180 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
181 | goto end; |
182 | } | |
183 | ||
184 | ret = config_writer_write_element_unsigned_int(writer, | |
185 | config_element_read_timer_interval, | |
186 | attr->read_timer_interval); | |
187 | if (ret) { | |
55c9e7ca | 188 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
189 | goto end; |
190 | } | |
191 | ||
192 | ret = config_writer_write_element_string(writer, | |
193 | config_element_output_type, | |
194 | attr->output == LTTNG_UST_MMAP ? | |
195 | config_output_type_mmap : config_output_type_splice); | |
196 | if (ret) { | |
55c9e7ca | 197 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
198 | goto end; |
199 | } | |
4fc2b126 | 200 | |
275472aa JR |
201 | ret = config_writer_write_element_signed_int(writer, |
202 | config_element_blocking_timeout, | |
203 | attr->u.s.blocking_timeout); | |
204 | if (ret) { | |
55c9e7ca | 205 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
206 | goto end; |
207 | } | |
208 | ||
4fc2b126 JR |
209 | /* |
210 | * Fetch the monitor timer which is located in the parent of | |
211 | * lttng_ust_channel_attr | |
212 | */ | |
213 | channel = caa_container_of(attr, struct ltt_ust_channel, attr); | |
214 | ret = config_writer_write_element_unsigned_int(writer, | |
215 | config_element_monitor_timer_interval, | |
216 | channel->monitor_timer_interval); | |
217 | if (ret) { | |
55c9e7ca | 218 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
219 | goto end; |
220 | } | |
221 | ||
55c9e7ca | 222 | ret = LTTNG_OK; |
fb198a11 | 223 | end: |
55c9e7ca | 224 | return ret; |
fb198a11 JG |
225 | } |
226 | ||
227 | static | |
228 | const char *get_kernel_instrumentation_string( | |
229 | enum lttng_kernel_instrumentation instrumentation) | |
230 | { | |
231 | const char *instrumentation_string; | |
232 | ||
233 | switch (instrumentation) { | |
234 | case LTTNG_KERNEL_ALL: | |
235 | instrumentation_string = config_event_type_all; | |
236 | break; | |
237 | case LTTNG_KERNEL_TRACEPOINT: | |
238 | instrumentation_string = config_event_type_tracepoint; | |
239 | break; | |
240 | case LTTNG_KERNEL_KPROBE: | |
9d82c4c2 | 241 | instrumentation_string = config_event_type_probe; |
fb198a11 | 242 | break; |
c1e83fb4 FD |
243 | case LTTNG_KERNEL_UPROBE: |
244 | instrumentation_string = config_event_type_userspace_probe; | |
245 | break; | |
fb198a11 | 246 | case LTTNG_KERNEL_FUNCTION: |
9d82c4c2 | 247 | instrumentation_string = config_event_type_function_entry; |
fb198a11 JG |
248 | break; |
249 | case LTTNG_KERNEL_KRETPROBE: | |
9d82c4c2 | 250 | instrumentation_string = config_event_type_function; |
fb198a11 JG |
251 | break; |
252 | case LTTNG_KERNEL_NOOP: | |
253 | instrumentation_string = config_event_type_noop; | |
254 | break; | |
255 | case LTTNG_KERNEL_SYSCALL: | |
256 | instrumentation_string = config_event_type_syscall; | |
257 | break; | |
258 | default: | |
259 | instrumentation_string = NULL; | |
260 | } | |
261 | ||
262 | return instrumentation_string; | |
263 | } | |
264 | ||
265 | static | |
266 | const char *get_kernel_context_type_string( | |
267 | enum lttng_kernel_context_type context_type) | |
268 | { | |
269 | const char *context_type_string; | |
270 | ||
271 | switch (context_type) { | |
272 | case LTTNG_KERNEL_CONTEXT_PID: | |
273 | context_type_string = config_event_context_pid; | |
274 | break; | |
275 | case LTTNG_KERNEL_CONTEXT_PROCNAME: | |
276 | context_type_string = config_event_context_procname; | |
277 | break; | |
278 | case LTTNG_KERNEL_CONTEXT_PRIO: | |
279 | context_type_string = config_event_context_prio; | |
280 | break; | |
281 | case LTTNG_KERNEL_CONTEXT_NICE: | |
282 | context_type_string = config_event_context_nice; | |
283 | break; | |
284 | case LTTNG_KERNEL_CONTEXT_VPID: | |
285 | context_type_string = config_event_context_vpid; | |
286 | break; | |
287 | case LTTNG_KERNEL_CONTEXT_TID: | |
288 | context_type_string = config_event_context_tid; | |
289 | break; | |
290 | case LTTNG_KERNEL_CONTEXT_VTID: | |
291 | context_type_string = config_event_context_vtid; | |
292 | break; | |
293 | case LTTNG_KERNEL_CONTEXT_PPID: | |
294 | context_type_string = config_event_context_ppid; | |
295 | break; | |
296 | case LTTNG_KERNEL_CONTEXT_VPPID: | |
297 | context_type_string = config_event_context_vppid; | |
298 | break; | |
299 | case LTTNG_KERNEL_CONTEXT_HOSTNAME: | |
300 | context_type_string = config_event_context_hostname; | |
301 | break; | |
1ae5e83e JD |
302 | case LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE: |
303 | context_type_string = config_event_context_interruptible; | |
304 | break; | |
305 | case LTTNG_KERNEL_CONTEXT_PREEMPTIBLE: | |
306 | context_type_string = config_event_context_preemptible; | |
307 | break; | |
308 | case LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE: | |
309 | context_type_string = config_event_context_need_reschedule; | |
310 | break; | |
311 | case LTTNG_KERNEL_CONTEXT_MIGRATABLE: | |
312 | context_type_string = config_event_context_migratable; | |
313 | break; | |
16c4c991 FD |
314 | case LTTNG_KERNEL_CONTEXT_CALLSTACK_USER: |
315 | context_type_string = config_event_context_callstack_user; | |
316 | break; | |
317 | case LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL: | |
318 | context_type_string = config_event_context_callstack_kernel; | |
319 | break; | |
40e14884 MJ |
320 | case LTTNG_KERNEL_CONTEXT_CGROUP_NS: |
321 | context_type_string = config_event_context_cgroup_ns; | |
322 | break; | |
323 | case LTTNG_KERNEL_CONTEXT_IPC_NS: | |
324 | context_type_string = config_event_context_ipc_ns; | |
325 | break; | |
326 | case LTTNG_KERNEL_CONTEXT_MNT_NS: | |
327 | context_type_string = config_event_context_mnt_ns; | |
328 | break; | |
329 | case LTTNG_KERNEL_CONTEXT_NET_NS: | |
330 | context_type_string = config_event_context_net_ns; | |
331 | break; | |
332 | case LTTNG_KERNEL_CONTEXT_PID_NS: | |
333 | context_type_string = config_event_context_pid_ns; | |
334 | break; | |
335 | case LTTNG_KERNEL_CONTEXT_USER_NS: | |
336 | context_type_string = config_event_context_user_ns; | |
337 | break; | |
338 | case LTTNG_KERNEL_CONTEXT_UTS_NS: | |
339 | context_type_string = config_event_context_uts_ns; | |
340 | break; | |
499cbfa1 MJ |
341 | case LTTNG_KERNEL_CONTEXT_UID: |
342 | context_type_string = config_event_context_uid; | |
343 | break; | |
344 | case LTTNG_KERNEL_CONTEXT_EUID: | |
345 | context_type_string = config_event_context_euid; | |
346 | break; | |
347 | case LTTNG_KERNEL_CONTEXT_SUID: | |
348 | context_type_string = config_event_context_suid; | |
349 | break; | |
350 | case LTTNG_KERNEL_CONTEXT_GID: | |
351 | context_type_string = config_event_context_gid; | |
352 | break; | |
353 | case LTTNG_KERNEL_CONTEXT_EGID: | |
354 | context_type_string = config_event_context_egid; | |
355 | break; | |
356 | case LTTNG_KERNEL_CONTEXT_SGID: | |
357 | context_type_string = config_event_context_sgid; | |
358 | break; | |
359 | case LTTNG_KERNEL_CONTEXT_VUID: | |
360 | context_type_string = config_event_context_vuid; | |
361 | break; | |
362 | case LTTNG_KERNEL_CONTEXT_VEUID: | |
363 | context_type_string = config_event_context_veuid; | |
364 | break; | |
365 | case LTTNG_KERNEL_CONTEXT_VSUID: | |
366 | context_type_string = config_event_context_vsuid; | |
367 | break; | |
368 | case LTTNG_KERNEL_CONTEXT_VGID: | |
369 | context_type_string = config_event_context_vgid; | |
370 | break; | |
371 | case LTTNG_KERNEL_CONTEXT_VEGID: | |
372 | context_type_string = config_event_context_vegid; | |
373 | break; | |
374 | case LTTNG_KERNEL_CONTEXT_VSGID: | |
375 | context_type_string = config_event_context_vsgid; | |
376 | break; | |
fb198a11 JG |
377 | default: |
378 | context_type_string = NULL; | |
379 | } | |
380 | ||
381 | return context_type_string; | |
382 | } | |
383 | ||
384 | static | |
385 | const char *get_ust_context_type_string( | |
386 | enum lttng_ust_context_type context_type) | |
387 | { | |
388 | const char *context_type_string; | |
389 | ||
390 | switch (context_type) { | |
391 | case LTTNG_UST_CONTEXT_PROCNAME: | |
392 | context_type_string = config_event_context_procname; | |
393 | break; | |
394 | case LTTNG_UST_CONTEXT_VPID: | |
395 | context_type_string = config_event_context_vpid; | |
396 | break; | |
397 | case LTTNG_UST_CONTEXT_VTID: | |
398 | context_type_string = config_event_context_vtid; | |
399 | break; | |
400 | case LTTNG_UST_CONTEXT_IP: | |
401 | context_type_string = config_event_context_ip; | |
402 | break; | |
403 | case LTTNG_UST_CONTEXT_PTHREAD_ID: | |
404 | context_type_string = config_event_context_pthread_id; | |
405 | break; | |
045fc617 JG |
406 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
407 | context_type_string = config_event_context_app; | |
408 | break; | |
f17b8732 MJ |
409 | case LTTNG_UST_CONTEXT_CGROUP_NS: |
410 | context_type_string = config_event_context_cgroup_ns; | |
411 | break; | |
412 | case LTTNG_UST_CONTEXT_IPC_NS: | |
413 | context_type_string = config_event_context_ipc_ns; | |
414 | break; | |
415 | case LTTNG_UST_CONTEXT_MNT_NS: | |
416 | context_type_string = config_event_context_mnt_ns; | |
417 | break; | |
418 | case LTTNG_UST_CONTEXT_NET_NS: | |
419 | context_type_string = config_event_context_net_ns; | |
420 | break; | |
421 | case LTTNG_UST_CONTEXT_PID_NS: | |
422 | context_type_string = config_event_context_pid_ns; | |
423 | break; | |
424 | case LTTNG_UST_CONTEXT_USER_NS: | |
425 | context_type_string = config_event_context_user_ns; | |
426 | break; | |
427 | case LTTNG_UST_CONTEXT_UTS_NS: | |
428 | context_type_string = config_event_context_uts_ns; | |
429 | break; | |
4fc59cb8 MJ |
430 | case LTTNG_UST_CONTEXT_VUID: |
431 | context_type_string = config_event_context_vuid; | |
432 | break; | |
433 | case LTTNG_UST_CONTEXT_VEUID: | |
434 | context_type_string = config_event_context_veuid; | |
435 | break; | |
436 | case LTTNG_UST_CONTEXT_VSUID: | |
437 | context_type_string = config_event_context_vsuid; | |
438 | break; | |
439 | case LTTNG_UST_CONTEXT_VGID: | |
440 | context_type_string = config_event_context_vgid; | |
441 | break; | |
442 | case LTTNG_UST_CONTEXT_VEGID: | |
443 | context_type_string = config_event_context_vegid; | |
444 | break; | |
445 | case LTTNG_UST_CONTEXT_VSGID: | |
446 | context_type_string = config_event_context_vsgid; | |
447 | break; | |
e885a367 | 448 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: |
14ce5bd8 JG |
449 | /* |
450 | * Error, should not be stored in the XML, perf contexts | |
451 | * are stored as a node of type event_perf_context_type. | |
452 | */ | |
fb198a11 JG |
453 | default: |
454 | context_type_string = NULL; | |
e885a367 | 455 | break; |
fb198a11 JG |
456 | } |
457 | ||
458 | return context_type_string; | |
459 | } | |
460 | ||
461 | static | |
462 | const char *get_buffer_type_string( | |
463 | enum lttng_buffer_type buffer_type) | |
464 | { | |
465 | const char *buffer_type_string; | |
466 | ||
467 | switch (buffer_type) { | |
468 | case LTTNG_BUFFER_PER_PID: | |
469 | buffer_type_string = config_buffer_type_per_pid; | |
470 | break; | |
471 | case LTTNG_BUFFER_PER_UID: | |
472 | buffer_type_string = config_buffer_type_per_uid; | |
473 | break; | |
474 | case LTTNG_BUFFER_GLOBAL: | |
475 | buffer_type_string = config_buffer_type_global; | |
476 | break; | |
477 | default: | |
478 | buffer_type_string = NULL; | |
479 | } | |
480 | ||
481 | return buffer_type_string; | |
482 | } | |
483 | ||
484 | static | |
485 | const char *get_loglevel_type_string( | |
486 | enum lttng_ust_loglevel_type loglevel_type) | |
487 | { | |
488 | const char *loglevel_type_string; | |
489 | ||
490 | switch (loglevel_type) { | |
491 | case LTTNG_UST_LOGLEVEL_ALL: | |
492 | loglevel_type_string = config_loglevel_type_all; | |
493 | break; | |
494 | case LTTNG_UST_LOGLEVEL_RANGE: | |
495 | loglevel_type_string = config_loglevel_type_range; | |
496 | break; | |
497 | case LTTNG_UST_LOGLEVEL_SINGLE: | |
498 | loglevel_type_string = config_loglevel_type_single; | |
499 | break; | |
500 | default: | |
501 | loglevel_type_string = NULL; | |
502 | } | |
503 | ||
504 | return loglevel_type_string; | |
505 | } | |
506 | ||
55c9e7ca | 507 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 | 508 | static |
83712c39 FD |
509 | int save_kernel_function_event(struct config_writer *writer, |
510 | struct ltt_kernel_event *event) | |
511 | { | |
512 | int ret; | |
513 | ||
514 | ret = config_writer_open_element(writer, config_element_function_attributes); | |
515 | if (ret) { | |
516 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
517 | goto end; | |
518 | } | |
519 | ||
520 | ret = config_writer_write_element_string(writer, config_element_name, | |
521 | event->event->u.ftrace.symbol_name); | |
522 | if (ret) { | |
523 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
524 | goto end; | |
525 | } | |
526 | ||
527 | /* /function attributes */ | |
528 | ret = config_writer_close_element(writer); | |
529 | if (ret) { | |
530 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
531 | goto end; | |
532 | } | |
533 | end: | |
534 | return ret; | |
535 | } | |
536 | ||
537 | static | |
538 | int save_kernel_kprobe_event(struct config_writer *writer, | |
539 | struct ltt_kernel_event *event) | |
540 | { | |
541 | int ret; | |
542 | const char *symbol_name; | |
543 | uint64_t addr; | |
544 | uint64_t offset; | |
545 | ||
546 | switch (event->event->instrumentation) { | |
547 | case LTTNG_KERNEL_KPROBE: | |
548 | /* | |
549 | * Comments in lttng-kernel.h mention that | |
550 | * either addr or symbol_name are set, not both. | |
551 | */ | |
552 | addr = event->event->u.kprobe.addr; | |
553 | offset = event->event->u.kprobe.offset; | |
554 | symbol_name = addr ? NULL : event->event->u.kprobe.symbol_name; | |
555 | break; | |
556 | case LTTNG_KERNEL_KRETPROBE: | |
557 | addr = event->event->u.kretprobe.addr; | |
558 | offset = event->event->u.kretprobe.offset; | |
c1e83fb4 | 559 | symbol_name = addr ? NULL : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
560 | break; |
561 | default: | |
562 | assert(1); | |
c1e83fb4 FD |
563 | ERR("Unsupported kernel instrumentation type."); |
564 | ret = LTTNG_ERR_INVALID; | |
565 | goto end; | |
83712c39 FD |
566 | } |
567 | ||
568 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
569 | if (ret) { | |
570 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
571 | goto end; | |
572 | } | |
573 | ||
c1e83fb4 FD |
574 | if (addr) { |
575 | ret = config_writer_write_element_unsigned_int( writer, | |
576 | config_element_address, addr); | |
577 | if (ret) { | |
578 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
579 | goto end; | |
580 | } | |
581 | } else if (symbol_name) { | |
83712c39 FD |
582 | ret = config_writer_write_element_string(writer, |
583 | config_element_symbol_name, symbol_name); | |
584 | if (ret) { | |
585 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
586 | goto end; | |
587 | } | |
c1e83fb4 FD |
588 | /* If the offset is non-zero, write it.*/ |
589 | if (offset) { | |
590 | ret = config_writer_write_element_unsigned_int(writer, | |
591 | config_element_offset, offset); | |
592 | if (ret) { | |
593 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
594 | goto end; | |
595 | } | |
596 | } | |
597 | } else { | |
598 | /* | |
599 | * This really should not happen as we are either setting the | |
600 | * address or the symbol above. | |
601 | */ | |
602 | ERR("Invalid probe/function description."); | |
603 | ret = LTTNG_ERR_INVALID; | |
604 | goto end; | |
83712c39 FD |
605 | } |
606 | ||
c1e83fb4 FD |
607 | |
608 | ret = config_writer_close_element(writer); | |
609 | if (ret) { | |
610 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
611 | goto end; | |
612 | } | |
613 | end: | |
614 | return ret; | |
615 | } | |
616 | ||
617 | /* | |
618 | * Save the userspace probe tracepoint event associated with the event to the | |
619 | * config writer. | |
620 | */ | |
621 | static | |
622 | int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, | |
623 | struct ltt_kernel_event *event) | |
624 | { | |
625 | int ret = 0; | |
626 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
627 | const struct lttng_userspace_probe_location *userspace_probe_location; |
628 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
629 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
630 | ||
631 | /* Get userspace probe location from the event. */ | |
632 | userspace_probe_location = event->userspace_probe_location; | |
633 | if (!userspace_probe_location) { | |
634 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
635 | goto end; | |
636 | } | |
637 | ||
638 | /* Get lookup method and lookup method type. */ | |
639 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
640 | if (!lookup_method) { | |
641 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
642 | goto end; | |
643 | } | |
644 | ||
645 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
646 | ||
647 | /* Get the binary path, probe name and provider name. */ | |
648 | binary_path = | |
649 | lttng_userspace_probe_location_tracepoint_get_binary_path( | |
650 | userspace_probe_location); | |
651 | if (!binary_path) { | |
652 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | probe_name = | |
657 | lttng_userspace_probe_location_tracepoint_get_probe_name( | |
658 | userspace_probe_location); | |
659 | if (!probe_name) { | |
660 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
661 | goto end; | |
662 | } | |
663 | ||
664 | provider_name = | |
665 | lttng_userspace_probe_location_tracepoint_get_provider_name( | |
666 | userspace_probe_location); | |
667 | if (!provider_name) { | |
668 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
669 | goto end; | |
670 | } | |
671 | ||
672 | /* Open a userspace probe tracepoint attribute. */ | |
673 | ret = config_writer_open_element(writer, config_element_userspace_probe_tracepoint_attributes); | |
674 | if (ret) { | |
675 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
676 | goto end; | |
677 | } | |
678 | ||
679 | switch (lookup_type) { | |
680 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
681 | ret = config_writer_write_element_string(writer, | |
682 | config_element_userspace_probe_lookup, | |
683 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
684 | if (ret) { |
685 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
686 | goto end; | |
687 | } | |
c1e83fb4 FD |
688 | break; |
689 | default: | |
690 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
691 | ret = LTTNG_ERR_INVALID; | |
692 | goto end; | |
83712c39 FD |
693 | } |
694 | ||
c1e83fb4 FD |
695 | /* Write the binary path, provider name and the probe name. */ |
696 | ret = config_writer_write_element_string(writer, | |
697 | config_element_userspace_probe_location_binary_path, | |
698 | binary_path); | |
699 | if (ret) { | |
700 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
701 | goto end; | |
702 | } | |
703 | ||
704 | ret = config_writer_write_element_string(writer, | |
705 | config_element_userspace_probe_tracepoint_location_provider_name, | |
706 | provider_name); | |
707 | if (ret) { | |
708 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
709 | goto end; | |
710 | } | |
711 | ||
712 | ret = config_writer_write_element_string(writer, | |
713 | config_element_userspace_probe_tracepoint_location_probe_name, | |
714 | probe_name); | |
715 | if (ret) { | |
716 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
717 | goto end; | |
718 | } | |
719 | ||
720 | /* Close the userspace probe tracepoint attribute. */ | |
721 | ret = config_writer_close_element(writer); | |
722 | if (ret) { | |
723 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
724 | goto end; | |
725 | } | |
726 | ||
727 | end: | |
728 | return ret; | |
729 | } | |
730 | ||
731 | /* | |
732 | * Save the userspace probe function event associated with the event to the | |
733 | * config writer. | |
734 | */ | |
735 | static | |
736 | int save_kernel_userspace_probe_function_event(struct config_writer *writer, | |
737 | struct ltt_kernel_event *event) | |
738 | { | |
739 | int ret = 0; | |
740 | const char *function_name, *binary_path; | |
87597c2c JG |
741 | const struct lttng_userspace_probe_location *userspace_probe_location; |
742 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
743 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
744 | ||
745 | /* Get userspace probe location from the event. */ | |
746 | userspace_probe_location = event->userspace_probe_location; | |
747 | if (!userspace_probe_location) { | |
748 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
749 | goto end; | |
750 | } | |
751 | ||
752 | /* Get lookup method and lookup method type. */ | |
753 | lookup_method = lttng_userspace_probe_location_get_lookup_method( | |
754 | userspace_probe_location); | |
755 | if (!lookup_method) { | |
756 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
757 | goto end; | |
758 | } | |
759 | ||
760 | /* Get the binary path and the function name. */ | |
761 | binary_path = | |
762 | lttng_userspace_probe_location_function_get_binary_path( | |
763 | userspace_probe_location); | |
764 | if (!binary_path) { | |
765 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
766 | goto end; | |
767 | } | |
768 | ||
769 | function_name = | |
770 | lttng_userspace_probe_location_function_get_function_name( | |
771 | userspace_probe_location); | |
772 | if (!function_name) { | |
773 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
774 | goto end; | |
775 | } | |
776 | ||
777 | /* Open a userspace probe function attribute. */ | |
778 | ret = config_writer_open_element(writer, | |
779 | config_element_userspace_probe_function_attributes); | |
780 | if (ret) { | |
781 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
782 | goto end; | |
783 | } | |
784 | ||
785 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
786 | switch (lookup_type) { | |
787 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
788 | ret = config_writer_write_element_string(writer, | |
789 | config_element_userspace_probe_lookup, | |
790 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
791 | if (ret) { |
792 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
793 | goto end; | |
794 | } | |
c1e83fb4 FD |
795 | break; |
796 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
797 | ret = config_writer_write_element_string(writer, | |
798 | config_element_userspace_probe_lookup, | |
799 | config_element_userspace_probe_lookup_function_default); | |
800 | if (ret) { | |
801 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
802 | goto end; | |
803 | } | |
804 | break; | |
805 | default: | |
806 | ERR("Unsupported kernel userspace probe function lookup method."); | |
807 | ret = LTTNG_ERR_INVALID; | |
808 | goto end; | |
83712c39 FD |
809 | } |
810 | ||
c1e83fb4 FD |
811 | /* Write the binary path and the function name. */ |
812 | ret = config_writer_write_element_string(writer, | |
813 | config_element_userspace_probe_location_binary_path, | |
814 | binary_path); | |
815 | if (ret) { | |
816 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
817 | goto end; | |
818 | } | |
819 | ||
820 | ret = config_writer_write_element_string(writer, | |
821 | config_element_userspace_probe_function_location_function_name, | |
822 | function_name); | |
823 | if (ret) { | |
824 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
825 | goto end; | |
826 | } | |
827 | ||
828 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
829 | ret = config_writer_close_element(writer); |
830 | if (ret) { | |
831 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
832 | goto end; | |
833 | } | |
c1e83fb4 | 834 | |
83712c39 FD |
835 | end: |
836 | return ret; | |
837 | } | |
c1e83fb4 FD |
838 | |
839 | static | |
840 | int save_kernel_userspace_probe_event(struct config_writer *writer, | |
841 | struct ltt_kernel_event *event) | |
842 | { | |
843 | int ret; | |
844 | struct lttng_userspace_probe_location *userspace_probe_location; | |
845 | ||
846 | /* Get userspace probe location from the event. */ | |
847 | userspace_probe_location = event->userspace_probe_location; | |
848 | if (!userspace_probe_location) { | |
849 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
850 | goto end; | |
851 | } | |
852 | ||
853 | switch(lttng_userspace_probe_location_get_type(userspace_probe_location)) { | |
854 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
855 | { | |
856 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
857 | if (ret) { | |
858 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
859 | goto end; | |
860 | } | |
861 | break; | |
862 | } | |
863 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
864 | { | |
865 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
866 | if (ret) { | |
867 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
868 | goto end; | |
869 | } | |
870 | break; | |
871 | } | |
872 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
873 | default: | |
874 | ERR("Unsupported kernel userspace probe location type."); | |
875 | ret = LTTNG_ERR_INVALID; | |
876 | goto end; | |
877 | } | |
878 | ||
879 | end: | |
880 | return ret; | |
881 | } | |
882 | ||
883 | static | |
fb198a11 | 884 | int save_kernel_event(struct config_writer *writer, |
83712c39 | 885 | struct ltt_kernel_event *event) |
fb198a11 JG |
886 | { |
887 | int ret; | |
888 | const char *instrumentation_type; | |
889 | ||
890 | ret = config_writer_open_element(writer, config_element_event); | |
891 | if (ret) { | |
892 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
893 | goto end; | |
894 | } | |
895 | ||
896 | if (event->event->name[0]) { | |
897 | ret = config_writer_write_element_string(writer, | |
898 | config_element_name, event->event->name); | |
899 | if (ret) { | |
900 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
901 | goto end; | |
902 | } | |
903 | } | |
904 | ||
905 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
906 | event->enabled); | |
907 | if (ret) { | |
908 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
909 | goto end; | |
910 | } | |
911 | ||
912 | instrumentation_type = get_kernel_instrumentation_string( | |
913 | event->event->instrumentation); | |
914 | if (!instrumentation_type) { | |
915 | ret = LTTNG_ERR_INVALID; | |
916 | goto end; | |
917 | } | |
918 | ||
919 | ret = config_writer_write_element_string(writer, config_element_type, | |
920 | instrumentation_type); | |
921 | if (ret) { | |
922 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
923 | goto end; | |
924 | } | |
925 | ||
911d1560 JG |
926 | if (event->filter_expression) { |
927 | ret = config_writer_write_element_string(writer, | |
928 | config_element_filter, | |
929 | event->filter_expression); | |
930 | if (ret) { | |
931 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
932 | goto end; | |
933 | } | |
934 | } | |
935 | ||
fb198a11 JG |
936 | if (event->event->instrumentation == LTTNG_KERNEL_FUNCTION || |
937 | event->event->instrumentation == LTTNG_KERNEL_KPROBE || | |
c1e83fb4 | 938 | event->event->instrumentation == LTTNG_KERNEL_UPROBE || |
fb198a11 JG |
939 | event->event->instrumentation == LTTNG_KERNEL_KRETPROBE) { |
940 | ||
941 | ret = config_writer_open_element(writer, | |
942 | config_element_attributes); | |
943 | if (ret) { | |
944 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
945 | goto end; | |
946 | } | |
947 | ||
948 | switch (event->event->instrumentation) { | |
0de3eda1 | 949 | case LTTNG_KERNEL_SYSCALL: |
fb198a11 | 950 | case LTTNG_KERNEL_FUNCTION: |
83712c39 | 951 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 952 | if (ret) { |
fb198a11 JG |
953 | goto end; |
954 | } | |
955 | break; | |
956 | case LTTNG_KERNEL_KPROBE: | |
957 | case LTTNG_KERNEL_KRETPROBE: | |
83712c39 | 958 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 959 | if (ret) { |
fb198a11 JG |
960 | goto end; |
961 | } | |
962 | break; | |
c1e83fb4 FD |
963 | case LTTNG_KERNEL_UPROBE: |
964 | ret = save_kernel_userspace_probe_event(writer, event); | |
965 | if (ret) { | |
966 | goto end; | |
967 | } | |
968 | break; | |
fb198a11 JG |
969 | default: |
970 | ERR("Unsupported kernel instrumentation type."); | |
971 | ret = LTTNG_ERR_INVALID; | |
972 | goto end; | |
973 | } | |
974 | ||
975 | /* /attributes */ | |
976 | ret = config_writer_close_element(writer); | |
977 | if (ret) { | |
978 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
979 | goto end; | |
980 | } | |
981 | } | |
982 | ||
983 | /* /event */ | |
984 | ret = config_writer_close_element(writer); | |
985 | if (ret) { | |
986 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
987 | goto end; | |
988 | } | |
55c9e7ca JR |
989 | |
990 | ret = LTTNG_OK; | |
fb198a11 JG |
991 | end: |
992 | return ret; | |
993 | } | |
994 | ||
55c9e7ca | 995 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
996 | static |
997 | int save_kernel_events(struct config_writer *writer, | |
0de3eda1 | 998 | struct ltt_kernel_channel *kchan) |
fb198a11 JG |
999 | { |
1000 | int ret; | |
1001 | struct ltt_kernel_event *event; | |
1002 | ||
1003 | ret = config_writer_open_element(writer, config_element_events); | |
1004 | if (ret) { | |
1005 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1006 | goto end; | |
1007 | } | |
1008 | ||
0de3eda1 | 1009 | cds_list_for_each_entry(event, &kchan->events_list.head, list) { |
fb198a11 | 1010 | ret = save_kernel_event(writer, event); |
55c9e7ca | 1011 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1012 | goto end; |
1013 | } | |
1014 | } | |
1015 | ||
1016 | /* /events */ | |
1017 | ret = config_writer_close_element(writer); | |
1018 | if (ret) { | |
1019 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1020 | goto end; | |
1021 | } | |
55c9e7ca JR |
1022 | |
1023 | ret = LTTNG_OK; | |
fb198a11 JG |
1024 | end: |
1025 | return ret; | |
1026 | } | |
1027 | ||
55c9e7ca | 1028 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1029 | static |
1030 | int save_ust_event(struct config_writer *writer, | |
1031 | struct ltt_ust_event *event) | |
1032 | { | |
1033 | int ret; | |
1034 | const char *loglevel_type_string; | |
1035 | ||
1036 | ret = config_writer_open_element(writer, config_element_event); | |
1037 | if (ret) { | |
1038 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1039 | goto end; | |
1040 | } | |
1041 | ||
1042 | if (event->attr.name[0]) { | |
1043 | ret = config_writer_write_element_string(writer, | |
1044 | config_element_name, event->attr.name); | |
1045 | if (ret) { | |
1046 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1047 | goto end; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1052 | event->enabled); | |
1053 | if (ret) { | |
1054 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1055 | goto end; | |
1056 | } | |
1057 | ||
1058 | if (event->attr.instrumentation != LTTNG_UST_TRACEPOINT) { | |
1059 | ERR("Unsupported UST instrumentation type."); | |
1060 | ret = LTTNG_ERR_INVALID; | |
1061 | goto end; | |
1062 | } | |
1063 | ret = config_writer_write_element_string(writer, config_element_type, | |
1064 | config_event_type_tracepoint); | |
1065 | if (ret) { | |
1066 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1067 | goto end; | |
1068 | } | |
1069 | ||
1070 | loglevel_type_string = get_loglevel_type_string( | |
1071 | event->attr.loglevel_type); | |
1072 | if (!loglevel_type_string) { | |
1073 | ERR("Unsupported UST loglevel type."); | |
1074 | ret = LTTNG_ERR_INVALID; | |
1075 | goto end; | |
1076 | } | |
1077 | ||
1078 | ret = config_writer_write_element_string(writer, | |
1079 | config_element_loglevel_type, loglevel_type_string); | |
1080 | if (ret) { | |
1081 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1082 | goto end; | |
1083 | } | |
1084 | ||
1adbdb10 JG |
1085 | /* The log level is irrelevant if no "filtering" is enabled */ |
1086 | if (event->attr.loglevel_type != LTTNG_UST_LOGLEVEL_ALL) { | |
1087 | ret = config_writer_write_element_signed_int(writer, | |
1088 | config_element_loglevel, event->attr.loglevel); | |
1089 | if (ret) { | |
1090 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1091 | goto end; | |
1092 | } | |
fb198a11 JG |
1093 | } |
1094 | ||
1095 | if (event->filter_expression) { | |
1096 | ret = config_writer_write_element_string(writer, | |
1097 | config_element_filter, event->filter_expression); | |
1098 | if (ret) { | |
1099 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1100 | goto end; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | if (event->exclusion && event->exclusion->count) { | |
1105 | uint32_t i; | |
1106 | ||
1107 | ret = config_writer_open_element(writer, | |
1108 | config_element_exclusions); | |
1109 | if (ret) { | |
1110 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1111 | goto end; | |
1112 | } | |
1113 | ||
1114 | for (i = 0; i < event->exclusion->count; i++) { | |
1115 | ret = config_writer_write_element_string(writer, | |
1116 | config_element_exclusion, | |
d7af3565 PP |
1117 | LTTNG_EVENT_EXCLUSION_NAME_AT( |
1118 | event->exclusion, i)); | |
fb198a11 JG |
1119 | if (ret) { |
1120 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1121 | goto end; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | /* /exclusions */ | |
1126 | ret = config_writer_close_element(writer); | |
1127 | if (ret) { | |
1128 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1129 | goto end; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | /* /event */ | |
1134 | ret = config_writer_close_element(writer); | |
1135 | if (ret) { | |
1136 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1137 | goto end; | |
1138 | } | |
55c9e7ca JR |
1139 | |
1140 | ret = LTTNG_OK; | |
fb198a11 JG |
1141 | end: |
1142 | return ret; | |
1143 | } | |
1144 | ||
55c9e7ca | 1145 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1146 | static |
1147 | int save_ust_events(struct config_writer *writer, | |
1148 | struct lttng_ht *events) | |
1149 | { | |
1150 | int ret; | |
1151 | struct ltt_ust_event *event; | |
1152 | struct lttng_ht_node_str *node; | |
1153 | struct lttng_ht_iter iter; | |
1154 | ||
1155 | ret = config_writer_open_element(writer, config_element_events); | |
1156 | if (ret) { | |
1157 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1158 | goto end; | |
1159 | } | |
1160 | ||
1161 | rcu_read_lock(); | |
1162 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { | |
1163 | event = caa_container_of(node, struct ltt_ust_event, node); | |
1164 | ||
af325ba1 JG |
1165 | if (event->internal) { |
1166 | /* Internal events must not be exposed to clients */ | |
1167 | continue; | |
1168 | } | |
fb198a11 | 1169 | ret = save_ust_event(writer, event); |
55c9e7ca | 1170 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1171 | rcu_read_unlock(); |
1172 | goto end; | |
1173 | } | |
1174 | } | |
1175 | rcu_read_unlock(); | |
1176 | ||
1177 | /* /events */ | |
1178 | ret = config_writer_close_element(writer); | |
1179 | if (ret) { | |
1180 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1181 | goto end; | |
1182 | } | |
55c9e7ca JR |
1183 | |
1184 | ret = LTTNG_OK; | |
fb198a11 JG |
1185 | end: |
1186 | return ret; | |
1187 | } | |
1188 | ||
55c9e7ca | 1189 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 | 1190 | static |
0b35b846 | 1191 | int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
51755dc8 JG |
1192 | struct agent_event *agent_event) |
1193 | { | |
55c9e7ca | 1194 | int ret; |
0b35b846 JG |
1195 | enum lttng_ust_loglevel_type ust_loglevel_type; |
1196 | ||
51755dc8 JG |
1197 | ust_event->enabled = agent_event->enabled; |
1198 | ust_event->attr.instrumentation = LTTNG_UST_TRACEPOINT; | |
d333bdaa MD |
1199 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, |
1200 | LTTNG_SYMBOL_NAME_LEN)) { | |
55c9e7ca | 1201 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1202 | goto end; |
1203 | } | |
0b35b846 JG |
1204 | switch (agent_event->loglevel_type) { |
1205 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
1206 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
1207 | break; | |
1208 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
1209 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
1210 | break; | |
1211 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
1212 | ust_loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
1213 | break; | |
1214 | default: | |
1215 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1216 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1217 | goto end; |
1218 | } | |
1219 | ||
1220 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1221 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1222 | ust_event->filter_expression = agent_event->filter_expression; |
1223 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1224 | |
1225 | ret = LTTNG_OK; | |
0b35b846 JG |
1226 | end: |
1227 | return ret; | |
51755dc8 JG |
1228 | } |
1229 | ||
55c9e7ca | 1230 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 JG |
1231 | static |
1232 | int save_agent_events(struct config_writer *writer, | |
51755dc8 JG |
1233 | struct agent *agent) |
1234 | { | |
1235 | int ret; | |
1236 | struct lttng_ht_iter iter; | |
1237 | struct lttng_ht_node_str *node; | |
1238 | ||
1239 | ret = config_writer_open_element(writer, config_element_events); | |
1240 | if (ret) { | |
1241 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1242 | goto end; | |
1243 | } | |
1244 | ||
1245 | rcu_read_lock(); | |
1246 | cds_lfht_for_each_entry(agent->events->ht, &iter.iter, node, node) { | |
1247 | int ret; | |
1248 | struct agent_event *agent_event; | |
1249 | struct ltt_ust_event fake_event; | |
1250 | ||
1251 | memset(&fake_event, 0, sizeof(fake_event)); | |
1252 | agent_event = caa_container_of(node, struct agent_event, node); | |
1253 | ||
1254 | /* | |
1255 | * Initialize a fake ust event to reuse the same serialization | |
1256 | * function since UST and agent events contain the same info | |
1257 | * (and one could wonder why they don't reuse the same | |
1258 | * structures...). | |
1259 | */ | |
0b35b846 | 1260 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); |
55c9e7ca | 1261 | if (ret != LTTNG_OK) { |
0b35b846 JG |
1262 | rcu_read_unlock(); |
1263 | goto end; | |
1264 | } | |
51755dc8 | 1265 | ret = save_ust_event(writer, &fake_event); |
55c9e7ca | 1266 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1267 | rcu_read_unlock(); |
1268 | goto end; | |
1269 | } | |
1270 | } | |
1271 | rcu_read_unlock(); | |
1272 | ||
1273 | /* /events */ | |
1274 | ret = config_writer_close_element(writer); | |
1275 | if (ret) { | |
1276 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1277 | goto end; | |
1278 | } | |
55c9e7ca JR |
1279 | |
1280 | ret = LTTNG_OK; | |
51755dc8 JG |
1281 | end: |
1282 | return ret; | |
1283 | } | |
1284 | ||
55c9e7ca | 1285 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1286 | static |
1287 | int save_kernel_context(struct config_writer *writer, | |
1288 | struct lttng_kernel_context *ctx) | |
1289 | { | |
55c9e7ca | 1290 | int ret = LTTNG_OK; |
fb198a11 JG |
1291 | |
1292 | if (!ctx) { | |
1293 | goto end; | |
1294 | } | |
1295 | ||
fb198a11 JG |
1296 | ret = config_writer_open_element(writer, config_element_context); |
1297 | if (ret) { | |
1298 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1299 | goto end; | |
1300 | } | |
1301 | ||
cba45eda | 1302 | if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) { |
045fc617 JG |
1303 | ret = config_writer_open_element(writer, |
1304 | config_element_context_perf); | |
fb198a11 JG |
1305 | if (ret) { |
1306 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1307 | goto end; | |
1308 | } | |
1309 | ||
1310 | ret = config_writer_write_element_unsigned_int(writer, | |
1311 | config_element_type, ctx->u.perf_counter.type); | |
1312 | if (ret) { | |
1313 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1314 | goto end; | |
1315 | } | |
1316 | ||
1317 | ret = config_writer_write_element_unsigned_int(writer, | |
1318 | config_element_config, ctx->u.perf_counter.config); | |
1319 | if (ret) { | |
1320 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1321 | goto end; | |
1322 | } | |
1323 | ||
1324 | ret = config_writer_write_element_string(writer, | |
1325 | config_element_name, ctx->u.perf_counter.name); | |
1326 | if (ret) { | |
1327 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1328 | goto end; | |
1329 | } | |
1330 | ||
1331 | /* /perf */ | |
1332 | ret = config_writer_close_element(writer); | |
1333 | if (ret) { | |
1334 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1335 | goto end; | |
1336 | } | |
1337 | } else { | |
1338 | const char *context_type_string = | |
1339 | get_kernel_context_type_string(ctx->ctx); | |
1340 | ||
1341 | if (!context_type_string) { | |
1342 | ERR("Unsupported kernel context type."); | |
1343 | ret = LTTNG_ERR_INVALID; | |
1344 | goto end; | |
1345 | } | |
1346 | ||
1347 | ret = config_writer_write_element_string(writer, | |
1348 | config_element_type, context_type_string); | |
1349 | if (ret) { | |
1350 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1351 | goto end; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | /* /context */ | |
1356 | ret = config_writer_close_element(writer); | |
1357 | if (ret) { | |
1358 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1359 | goto end; | |
1360 | } | |
1361 | ||
55c9e7ca | 1362 | ret = LTTNG_OK; |
645328ae DG |
1363 | end: |
1364 | return ret; | |
1365 | } | |
1366 | ||
55c9e7ca | 1367 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
645328ae DG |
1368 | static |
1369 | int save_kernel_contexts(struct config_writer *writer, | |
1370 | struct ltt_kernel_channel *kchan) | |
1371 | { | |
1372 | int ret; | |
1373 | struct ltt_kernel_context *ctx; | |
1374 | ||
2aa64052 | 1375 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1376 | ret = LTTNG_OK; |
2aa64052 JG |
1377 | goto end; |
1378 | } | |
1379 | ||
645328ae DG |
1380 | ret = config_writer_open_element(writer, config_element_contexts); |
1381 | if (ret) { | |
1382 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1383 | goto end; | |
1384 | } | |
1385 | ||
1386 | cds_list_for_each_entry(ctx, &kchan->ctx_list, list) { | |
1387 | ret = save_kernel_context(writer, &ctx->ctx); | |
55c9e7ca | 1388 | if (ret != LTTNG_OK) { |
645328ae DG |
1389 | goto end; |
1390 | } | |
1391 | } | |
1392 | ||
fb198a11 JG |
1393 | /* /contexts */ |
1394 | ret = config_writer_close_element(writer); | |
1395 | if (ret) { | |
1396 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1397 | goto end; | |
1398 | } | |
55c9e7ca JR |
1399 | |
1400 | ret = LTTNG_OK; | |
fb198a11 JG |
1401 | end: |
1402 | return ret; | |
1403 | } | |
1404 | ||
55c9e7ca | 1405 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1406 | static |
1407 | int save_ust_context_perf_thread_counter(struct config_writer *writer, | |
1408 | struct ltt_ust_context *ctx) | |
1409 | { | |
1410 | int ret; | |
1411 | ||
1412 | assert(writer); | |
1413 | assert(ctx); | |
1414 | ||
1415 | /* Perf contexts are saved as event_perf_context_type */ | |
1416 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1417 | if (ret) { | |
1418 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1419 | goto end; | |
1420 | } | |
1421 | ||
1422 | ret = config_writer_write_element_unsigned_int(writer, | |
1423 | config_element_type, ctx->ctx.u.perf_counter.type); | |
1424 | if (ret) { | |
1425 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1426 | goto end; | |
1427 | } | |
1428 | ||
1429 | ret = config_writer_write_element_unsigned_int(writer, | |
1430 | config_element_config, ctx->ctx.u.perf_counter.config); | |
1431 | if (ret) { | |
1432 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1433 | goto end; | |
1434 | } | |
1435 | ||
1436 | ret = config_writer_write_element_string(writer, config_element_name, | |
1437 | ctx->ctx.u.perf_counter.name); | |
1438 | if (ret) { | |
1439 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1440 | goto end; | |
1441 | } | |
1442 | ||
1443 | /* /perf */ | |
1444 | ret = config_writer_close_element(writer); | |
1445 | if (ret) { | |
1446 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1447 | goto end; | |
1448 | } | |
55c9e7ca JR |
1449 | |
1450 | ret = LTTNG_OK; | |
045fc617 JG |
1451 | end: |
1452 | return ret; | |
1453 | } | |
1454 | ||
55c9e7ca | 1455 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1456 | static |
1457 | int save_ust_context_app_ctx(struct config_writer *writer, | |
1458 | struct ltt_ust_context *ctx) | |
1459 | { | |
1460 | int ret; | |
1461 | ||
1462 | assert(writer); | |
1463 | assert(ctx); | |
1464 | ||
1465 | /* Application contexts are saved as application_context_type */ | |
1466 | ret = config_writer_open_element(writer, config_element_context_app); | |
1467 | if (ret) { | |
1468 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1469 | goto end; | |
1470 | } | |
1471 | ||
1472 | ret = config_writer_write_element_string(writer, | |
1473 | config_element_context_app_provider_name, | |
1474 | ctx->ctx.u.app_ctx.provider_name); | |
1475 | if (ret) { | |
1476 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1477 | goto end; | |
1478 | } | |
1479 | ||
1480 | ret = config_writer_write_element_string(writer, | |
1481 | config_element_context_app_ctx_name, | |
1482 | ctx->ctx.u.app_ctx.ctx_name); | |
1483 | if (ret) { | |
1484 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1485 | goto end; | |
1486 | } | |
1487 | ||
1488 | /* /app */ | |
1489 | ret = config_writer_close_element(writer); | |
1490 | if (ret) { | |
1491 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1492 | goto end; | |
1493 | } | |
55c9e7ca JR |
1494 | |
1495 | ret = LTTNG_OK; | |
045fc617 JG |
1496 | end: |
1497 | return ret; | |
1498 | } | |
1499 | ||
55c9e7ca | 1500 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1501 | static |
1502 | int save_ust_context_generic(struct config_writer *writer, | |
1503 | struct ltt_ust_context *ctx) | |
1504 | { | |
1505 | int ret; | |
1506 | const char *context_type_string; | |
1507 | ||
1508 | assert(writer); | |
1509 | assert(ctx); | |
1510 | ||
1511 | /* Save context as event_context_type_type */ | |
1512 | context_type_string = get_ust_context_type_string( | |
1513 | ctx->ctx.ctx); | |
1514 | if (!context_type_string) { | |
1515 | ERR("Unsupported UST context type."); | |
1516 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1517 | goto end; | |
1518 | } | |
1519 | ||
1520 | ret = config_writer_write_element_string(writer, | |
1521 | config_element_type, context_type_string); | |
1522 | if (ret) { | |
1523 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1524 | goto end; | |
1525 | } | |
55c9e7ca JR |
1526 | |
1527 | ret = LTTNG_OK; | |
045fc617 JG |
1528 | end: |
1529 | return ret; | |
1530 | } | |
1531 | ||
55c9e7ca | 1532 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1533 | static |
1534 | int save_ust_context(struct config_writer *writer, | |
1535 | struct cds_list_head *ctx_list) | |
1536 | { | |
1537 | int ret; | |
1538 | struct ltt_ust_context *ctx; | |
1539 | ||
1540 | assert(writer); | |
1541 | assert(ctx_list); | |
1542 | ||
1543 | ret = config_writer_open_element(writer, config_element_contexts); | |
1544 | if (ret) { | |
1545 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1546 | goto end; | |
1547 | } | |
1548 | ||
1549 | cds_list_for_each_entry(ctx, ctx_list, list) { | |
fb198a11 JG |
1550 | ret = config_writer_open_element(writer, |
1551 | config_element_context); | |
1552 | if (ret) { | |
1553 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1554 | goto end; | |
1555 | } | |
1556 | ||
045fc617 JG |
1557 | switch (ctx->ctx.ctx) { |
1558 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
1559 | ret = save_ust_context_perf_thread_counter(writer, ctx); | |
1560 | break; | |
1561 | case LTTNG_UST_CONTEXT_APP_CONTEXT: | |
1562 | ret = save_ust_context_app_ctx(writer, ctx); | |
1563 | break; | |
1564 | default: | |
1565 | /* Save generic context. */ | |
1566 | ret = save_ust_context_generic(writer, ctx); | |
1567 | } | |
55c9e7ca | 1568 | if (ret != LTTNG_OK) { |
045fc617 | 1569 | goto end; |
fb198a11 JG |
1570 | } |
1571 | ||
1572 | /* /context */ | |
1573 | ret = config_writer_close_element(writer); | |
1574 | if (ret) { | |
1575 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1576 | goto end; | |
1577 | } | |
1578 | } | |
1579 | ||
1580 | /* /contexts */ | |
1581 | ret = config_writer_close_element(writer); | |
1582 | if (ret) { | |
1583 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1584 | goto end; | |
1585 | } | |
55c9e7ca JR |
1586 | |
1587 | ret = LTTNG_OK; | |
fb198a11 JG |
1588 | end: |
1589 | return ret; | |
1590 | } | |
1591 | ||
55c9e7ca | 1592 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1593 | static |
1594 | int save_kernel_channel(struct config_writer *writer, | |
1595 | struct ltt_kernel_channel *kchan) | |
1596 | { | |
1597 | int ret; | |
1598 | ||
1599 | assert(writer); | |
1600 | assert(kchan); | |
1601 | ||
1602 | ret = config_writer_open_element(writer, config_element_channel); | |
1603 | if (ret) { | |
1604 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1605 | goto end; | |
1606 | } | |
1607 | ||
1608 | ret = config_writer_write_element_string(writer, config_element_name, | |
1609 | kchan->channel->name); | |
1610 | if (ret) { | |
1611 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1612 | goto end; | |
1613 | } | |
1614 | ||
1615 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1616 | kchan->channel->enabled); | |
1617 | if (ret) { | |
1618 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1619 | goto end; | |
1620 | } | |
1621 | ||
1622 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1623 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1624 | goto end; |
1625 | } | |
1626 | ||
0de3eda1 | 1627 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1628 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1629 | goto end; |
1630 | } | |
1631 | ||
645328ae | 1632 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1633 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1634 | goto end; |
1635 | } | |
1636 | ||
1637 | /* /channel */ | |
1638 | ret = config_writer_close_element(writer); | |
1639 | if (ret) { | |
1640 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1641 | goto end; | |
1642 | } | |
55c9e7ca JR |
1643 | |
1644 | ret = LTTNG_OK; | |
fb198a11 JG |
1645 | end: |
1646 | return ret; | |
1647 | } | |
1648 | ||
55c9e7ca | 1649 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1650 | static |
1651 | int save_ust_channel(struct config_writer *writer, | |
1652 | struct ltt_ust_channel *ust_chan, | |
1653 | struct ltt_ust_session *session) | |
1654 | { | |
1655 | int ret; | |
1656 | ||
1657 | assert(writer); | |
1658 | assert(ust_chan); | |
1659 | assert(session); | |
1660 | ||
1661 | ret = config_writer_open_element(writer, config_element_channel); | |
1662 | if (ret) { | |
1663 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1664 | goto end; | |
1665 | } | |
1666 | ||
1667 | ret = config_writer_write_element_string(writer, config_element_name, | |
1668 | ust_chan->name); | |
1669 | if (ret) { | |
1670 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1671 | goto end; | |
1672 | } | |
1673 | ||
1674 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1675 | ust_chan->enabled); | |
1676 | if (ret) { | |
1677 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1678 | goto end; | |
1679 | } | |
1680 | ||
1681 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1682 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1683 | goto end; |
1684 | } | |
1685 | ||
1686 | ret = config_writer_write_element_unsigned_int(writer, | |
1687 | config_element_tracefile_size, ust_chan->tracefile_size); | |
1688 | if (ret) { | |
1689 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1690 | goto end; | |
1691 | } | |
1692 | ||
1693 | ret = config_writer_write_element_unsigned_int(writer, | |
1694 | config_element_tracefile_count, ust_chan->tracefile_count); | |
1695 | if (ret) { | |
1696 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1697 | goto end; | |
1698 | } | |
1699 | ||
1700 | ret = config_writer_write_element_unsigned_int(writer, | |
1701 | config_element_live_timer_interval, | |
1702 | session->live_timer_interval); | |
1703 | if (ret) { | |
1704 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1705 | goto end; | |
1706 | } | |
1707 | ||
51755dc8 JG |
1708 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1709 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1710 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1711 | goto end; |
1712 | } | |
1713 | } else { | |
1714 | struct agent *agent = NULL; | |
1715 | ||
1716 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1717 | if (!agent) { | |
1718 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1719 | ERR("Could not find agent associated to UST subdomain"); | |
1720 | goto end; | |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1725 | * or Python) don't have any non-internal events. We retrieve | |
1726 | * the "agent" events associated with this channel and serialize | |
1727 | * them. | |
1728 | */ | |
8cd0a98d | 1729 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1730 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1731 | goto end; |
1732 | } | |
fb198a11 JG |
1733 | } |
1734 | ||
1735 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1736 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1737 | goto end; |
1738 | } | |
1739 | ||
1740 | /* /channel */ | |
1741 | ret = config_writer_close_element(writer); | |
1742 | if (ret) { | |
1743 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1744 | goto end; | |
1745 | } | |
55c9e7ca JR |
1746 | |
1747 | ret = LTTNG_OK; | |
fb198a11 JG |
1748 | end: |
1749 | return ret; | |
1750 | } | |
1751 | ||
55c9e7ca | 1752 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1753 | static |
1754 | int save_kernel_session(struct config_writer *writer, | |
1755 | struct ltt_session *session) | |
1756 | { | |
1757 | int ret; | |
1758 | struct ltt_kernel_channel *kchan; | |
1759 | ||
1760 | assert(writer); | |
1761 | assert(session); | |
1762 | ||
1763 | ret = config_writer_write_element_string(writer, config_element_type, | |
1764 | config_domain_type_kernel); | |
1765 | if (ret) { | |
1766 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1767 | goto end; | |
1768 | } | |
1769 | ||
1770 | ret = config_writer_write_element_string(writer, | |
1771 | config_element_buffer_type, config_buffer_type_global); | |
1772 | if (ret) { | |
1773 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1774 | goto end; | |
1775 | } | |
1776 | ||
1777 | ret = config_writer_open_element(writer, | |
1778 | config_element_channels); | |
1779 | if (ret) { | |
1780 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1781 | goto end; | |
1782 | } | |
1783 | ||
1784 | cds_list_for_each_entry(kchan, &session->kernel_session->channel_list.head, | |
1785 | list) { | |
1786 | ret = save_kernel_channel(writer, kchan); | |
55c9e7ca | 1787 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1788 | goto end; |
1789 | } | |
1790 | } | |
1791 | ||
1792 | /* /channels */ | |
1793 | ret = config_writer_close_element(writer); | |
1794 | if (ret) { | |
1795 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1796 | goto end; | |
1797 | } | |
55c9e7ca JR |
1798 | |
1799 | ret = LTTNG_OK; | |
fb198a11 JG |
1800 | end: |
1801 | return ret; | |
1802 | } | |
1803 | ||
1804 | static | |
51755dc8 JG |
1805 | const char *get_config_domain_str(enum lttng_domain_type domain) |
1806 | { | |
1807 | const char *str_dom; | |
1808 | ||
1809 | switch (domain) { | |
1810 | case LTTNG_DOMAIN_KERNEL: | |
1811 | str_dom = config_domain_type_kernel; | |
1812 | break; | |
1813 | case LTTNG_DOMAIN_UST: | |
1814 | str_dom = config_domain_type_ust; | |
1815 | break; | |
1816 | case LTTNG_DOMAIN_JUL: | |
1817 | str_dom = config_domain_type_jul; | |
1818 | break; | |
1819 | case LTTNG_DOMAIN_LOG4J: | |
1820 | str_dom = config_domain_type_log4j; | |
1821 | break; | |
1822 | case LTTNG_DOMAIN_PYTHON: | |
1823 | str_dom = config_domain_type_python; | |
1824 | break; | |
1825 | default: | |
1826 | assert(0); | |
1827 | } | |
1828 | ||
1829 | return str_dom; | |
1830 | } | |
1831 | ||
55c9e7ca JR |
1832 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
1833 | static int save_id_tracker(struct config_writer *writer, | |
1834 | struct ltt_session *sess, | |
1835 | int domain, | |
1836 | enum lttng_tracker_type tracker_type) | |
e8fcabef | 1837 | { |
55c9e7ca JR |
1838 | int ret = LTTNG_OK; |
1839 | ssize_t nr_ids = 0, i; | |
1840 | struct lttng_tracker_id *ids = NULL; | |
1841 | const char *element_id_tracker, *element_target_id, *element_id; | |
1842 | ||
1843 | switch (tracker_type) { | |
1844 | case LTTNG_TRACKER_PID: | |
1845 | element_id_tracker = config_element_pid_tracker; | |
1846 | element_target_id = config_element_target_pid; | |
1847 | element_id = config_element_pid; | |
1848 | break; | |
1849 | case LTTNG_TRACKER_VPID: | |
1850 | element_id_tracker = config_element_vpid_tracker; | |
1851 | element_target_id = config_element_target_vpid; | |
1852 | element_id = config_element_id; | |
1853 | break; | |
1854 | case LTTNG_TRACKER_UID: | |
1855 | element_id_tracker = config_element_uid_tracker; | |
1856 | element_target_id = config_element_target_uid; | |
1857 | element_id = config_element_id; | |
1858 | break; | |
1859 | case LTTNG_TRACKER_VUID: | |
1860 | element_id_tracker = config_element_vuid_tracker; | |
1861 | element_target_id = config_element_target_vuid; | |
1862 | element_id = config_element_id; | |
1863 | break; | |
1864 | case LTTNG_TRACKER_GID: | |
1865 | element_id_tracker = config_element_gid_tracker; | |
1866 | element_target_id = config_element_target_gid; | |
1867 | element_id = config_element_id; | |
1868 | break; | |
1869 | case LTTNG_TRACKER_VGID: | |
1870 | element_id_tracker = config_element_vgid_tracker; | |
1871 | element_target_id = config_element_target_vgid; | |
1872 | element_id = config_element_id; | |
1873 | break; | |
1874 | default: | |
1875 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1876 | goto end; | |
1877 | } | |
e8fcabef JG |
1878 | |
1879 | switch (domain) { | |
1880 | case LTTNG_DOMAIN_KERNEL: | |
1881 | { | |
55c9e7ca JR |
1882 | nr_ids = kernel_list_tracker_ids( |
1883 | tracker_type, sess->kernel_session, &ids); | |
1884 | if (nr_ids < 0) { | |
e8fcabef JG |
1885 | ret = LTTNG_ERR_KERN_LIST_FAIL; |
1886 | goto end; | |
1887 | } | |
1888 | break; | |
1889 | } | |
1890 | case LTTNG_DOMAIN_UST: | |
1891 | { | |
55c9e7ca JR |
1892 | nr_ids = trace_ust_list_tracker_ids( |
1893 | tracker_type, sess->ust_session, &ids); | |
1894 | if (nr_ids < 0) { | |
e8fcabef JG |
1895 | ret = LTTNG_ERR_UST_LIST_FAIL; |
1896 | goto end; | |
1897 | } | |
1898 | break; | |
1899 | } | |
1900 | case LTTNG_DOMAIN_JUL: | |
1901 | case LTTNG_DOMAIN_LOG4J: | |
1902 | case LTTNG_DOMAIN_PYTHON: | |
1903 | default: | |
1904 | ret = LTTNG_ERR_UNKNOWN_DOMAIN; | |
1905 | goto end; | |
1906 | } | |
1907 | ||
55c9e7ca JR |
1908 | if (nr_ids == 1 && ids[0].type == LTTNG_ID_ALL) { |
1909 | /* Tracking all, nothing to output. */ | |
1910 | ret = LTTNG_OK; | |
1911 | goto end; | |
1912 | } | |
1913 | ||
1914 | ret = config_writer_open_element(writer, element_id_tracker); | |
1915 | if (ret) { | |
1916 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1917 | goto end; | |
1918 | } | |
1919 | ||
1920 | ret = config_writer_open_element(writer, config_element_targets); | |
1921 | if (ret) { | |
1922 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1923 | goto end; | |
1924 | } | |
1925 | ||
1926 | if (nr_ids == 0) { | |
1927 | /* Tracking none: empty list. */ | |
1928 | ret = config_writer_open_element(writer, element_target_id); | |
e8fcabef JG |
1929 | if (ret) { |
1930 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1931 | goto end; | |
1932 | } | |
1933 | ||
55c9e7ca JR |
1934 | /* /$element_target_id */ |
1935 | ret = config_writer_close_element(writer); | |
e8fcabef JG |
1936 | if (ret) { |
1937 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1938 | goto end; | |
1939 | } | |
55c9e7ca JR |
1940 | } else { |
1941 | /* Tracking list. */ | |
1942 | for (i = 0; i < nr_ids; i++) { | |
1943 | switch (ids[i].type) { | |
1944 | case LTTNG_ID_VALUE: | |
1945 | ret = config_writer_open_element( | |
1946 | writer, element_target_id); | |
1947 | if (ret) { | |
1948 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1949 | goto end; | |
1950 | } | |
1951 | ret = config_writer_write_element_unsigned_int( | |
1952 | writer, element_id, | |
1953 | ids[i].value); | |
1954 | break; | |
1955 | case LTTNG_ID_STRING: | |
1956 | ret = config_writer_open_element( | |
1957 | writer, element_target_id); | |
1958 | if (ret) { | |
1959 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1960 | goto end; | |
1961 | } | |
1962 | ret = config_writer_write_element_string(writer, | |
1963 | config_element_name, | |
1964 | ids[i].string); | |
1965 | break; | |
1966 | default: | |
1967 | /* Unexpected. */ | |
e8fcabef JG |
1968 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1969 | goto end; | |
1970 | } | |
e8fcabef JG |
1971 | if (ret) { |
1972 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1973 | goto end; | |
1974 | } | |
1975 | ||
55c9e7ca | 1976 | /* /$element_target_id */ |
e8fcabef JG |
1977 | ret = config_writer_close_element(writer); |
1978 | if (ret) { | |
1979 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1980 | goto end; | |
1981 | } | |
1982 | } | |
55c9e7ca | 1983 | } |
e8fcabef | 1984 | |
55c9e7ca JR |
1985 | /* /targets */ |
1986 | ret = config_writer_close_element(writer); | |
1987 | if (ret) { | |
1988 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1989 | goto end; | |
1990 | } | |
e8fcabef | 1991 | |
55c9e7ca JR |
1992 | /* /$element_id_tracker */ |
1993 | ret = config_writer_close_element(writer); | |
1994 | if (ret) { | |
1995 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1996 | goto end; | |
e8fcabef | 1997 | } |
55c9e7ca JR |
1998 | |
1999 | ret = LTTNG_OK; | |
e8fcabef | 2000 | end: |
55c9e7ca | 2001 | free(ids); |
e8fcabef JG |
2002 | return ret; |
2003 | } | |
2004 | ||
55c9e7ca JR |
2005 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
2006 | static int save_id_trackers(struct config_writer *writer, | |
2007 | struct ltt_session *sess, | |
2008 | int domain) | |
2009 | { | |
2010 | int ret; | |
2011 | ||
2012 | switch (domain) { | |
2013 | case LTTNG_DOMAIN_KERNEL: | |
2014 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_PID); | |
2015 | if (ret != LTTNG_OK) | |
2016 | return ret; | |
2017 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VPID); | |
2018 | if (ret != LTTNG_OK) | |
2019 | return ret; | |
2020 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_UID); | |
2021 | if (ret != LTTNG_OK) | |
2022 | return ret; | |
2023 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VUID); | |
2024 | if (ret != LTTNG_OK) | |
2025 | return ret; | |
2026 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_GID); | |
2027 | if (ret != LTTNG_OK) | |
2028 | return ret; | |
2029 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VGID); | |
2030 | if (ret != LTTNG_OK) | |
2031 | return ret; | |
2032 | break; | |
2033 | case LTTNG_DOMAIN_UST: | |
2034 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VPID); | |
2035 | if (ret != LTTNG_OK) | |
2036 | return ret; | |
2037 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VUID); | |
2038 | if (ret != LTTNG_OK) | |
2039 | return ret; | |
2040 | ret = save_id_tracker(writer, sess, domain, LTTNG_TRACKER_VGID); | |
2041 | if (ret != LTTNG_OK) | |
2042 | return ret; | |
2043 | break; | |
2044 | default: | |
2045 | return LTTNG_ERR_INVALID; | |
2046 | } | |
2047 | return LTTNG_OK; | |
2048 | } | |
2049 | ||
2050 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
51755dc8 JG |
2051 | static |
2052 | int save_ust_domain(struct config_writer *writer, | |
2053 | struct ltt_session *session, enum lttng_domain_type domain) | |
fb198a11 JG |
2054 | { |
2055 | int ret; | |
2056 | struct ltt_ust_channel *ust_chan; | |
2057 | const char *buffer_type_string; | |
2058 | struct lttng_ht_node_str *node; | |
2059 | struct lttng_ht_iter iter; | |
51755dc8 | 2060 | const char *config_domain_name; |
fb198a11 JG |
2061 | |
2062 | assert(writer); | |
2063 | assert(session); | |
2064 | ||
51755dc8 JG |
2065 | ret = config_writer_open_element(writer, |
2066 | config_element_domain); | |
2067 | if (ret) { | |
2068 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2069 | goto end; | |
2070 | } | |
2071 | ||
2072 | config_domain_name = get_config_domain_str(domain); | |
2073 | if (!config_domain_name) { | |
2074 | ret = LTTNG_ERR_INVALID; | |
2075 | goto end; | |
2076 | } | |
2077 | ||
2078 | ret = config_writer_write_element_string(writer, | |
2079 | config_element_type, config_domain_name); | |
fb198a11 JG |
2080 | if (ret) { |
2081 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2082 | goto end; | |
2083 | } | |
2084 | ||
2085 | buffer_type_string = get_buffer_type_string( | |
2086 | session->ust_session->buffer_type); | |
2087 | if (!buffer_type_string) { | |
2088 | ERR("Unsupported buffer type."); | |
2089 | ret = LTTNG_ERR_INVALID; | |
2090 | goto end; | |
2091 | } | |
2092 | ||
2093 | ret = config_writer_write_element_string(writer, | |
2094 | config_element_buffer_type, buffer_type_string); | |
2095 | if (ret) { | |
2096 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2097 | goto end; | |
2098 | } | |
2099 | ||
2100 | ret = config_writer_open_element(writer, config_element_channels); | |
2101 | if (ret) { | |
2102 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2103 | goto end; | |
2104 | } | |
2105 | ||
2106 | rcu_read_lock(); | |
2107 | cds_lfht_for_each_entry(session->ust_session->domain_global.channels->ht, | |
2108 | &iter.iter, node, node) { | |
fb198a11 | 2109 | ust_chan = caa_container_of(node, struct ltt_ust_channel, node); |
51755dc8 | 2110 | if (domain == ust_chan->domain) { |
fb198a11 | 2111 | ret = save_ust_channel(writer, ust_chan, session->ust_session); |
55c9e7ca | 2112 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2113 | rcu_read_unlock(); |
2114 | goto end; | |
2115 | } | |
2116 | } | |
2117 | } | |
2118 | rcu_read_unlock(); | |
2119 | ||
2120 | /* /channels */ | |
2121 | ret = config_writer_close_element(writer); | |
2122 | if (ret) { | |
2123 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2124 | goto end; | |
2125 | } | |
51755dc8 | 2126 | |
e8fcabef | 2127 | if (domain == LTTNG_DOMAIN_UST) { |
847a5916 | 2128 | ret = config_writer_open_element(writer, |
e8fcabef | 2129 | config_element_trackers); |
847a5916 JR |
2130 | if (ret) { |
2131 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2132 | goto end; | |
2133 | } | |
2134 | ||
55c9e7ca JR |
2135 | ret = save_id_trackers(writer, session, LTTNG_DOMAIN_UST); |
2136 | if (ret != LTTNG_OK) { | |
847a5916 JR |
2137 | goto end; |
2138 | } | |
2139 | ||
e8fcabef | 2140 | /* /trackers */ |
847a5916 JR |
2141 | ret = config_writer_close_element(writer); |
2142 | if (ret) { | |
55c9e7ca | 2143 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2144 | goto end; |
2145 | } | |
e8fcabef | 2146 | } |
847a5916 | 2147 | |
e8fcabef JG |
2148 | /* /domain */ |
2149 | ret = config_writer_close_element(writer); | |
2150 | if (ret) { | |
2151 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2152 | goto end; | |
847a5916 | 2153 | } |
e8fcabef | 2154 | |
55c9e7ca | 2155 | ret = LTTNG_OK; |
847a5916 | 2156 | end: |
847a5916 JR |
2157 | return ret; |
2158 | } | |
2159 | ||
55c9e7ca | 2160 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2161 | static |
2162 | int save_domains(struct config_writer *writer, struct ltt_session *session) | |
2163 | { | |
55c9e7ca | 2164 | int ret = LTTNG_OK; |
fb198a11 JG |
2165 | |
2166 | assert(writer); | |
2167 | assert(session); | |
2168 | ||
2169 | if (!session->kernel_session && !session->ust_session) { | |
2170 | goto end; | |
2171 | } | |
2172 | ||
2173 | ret = config_writer_open_element(writer, config_element_domains); | |
2174 | if (ret) { | |
2175 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2176 | goto end; | |
2177 | } | |
2178 | ||
fb198a11 JG |
2179 | if (session->kernel_session) { |
2180 | ret = config_writer_open_element(writer, | |
2181 | config_element_domain); | |
2182 | if (ret) { | |
2183 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2184 | goto end; | |
2185 | } | |
2186 | ||
2187 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2188 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2189 | goto end; |
2190 | } | |
2191 | ||
847a5916 JR |
2192 | ret = config_writer_open_element(writer, |
2193 | config_element_trackers); | |
2194 | if (ret) { | |
2195 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2196 | goto end; | |
2197 | } | |
2198 | ||
55c9e7ca JR |
2199 | ret = save_id_trackers(writer, session, LTTNG_DOMAIN_KERNEL); |
2200 | if (ret != LTTNG_OK) { | |
847a5916 JR |
2201 | goto end; |
2202 | } | |
2203 | ||
2204 | /* /trackers */ | |
2205 | ret = config_writer_close_element(writer); | |
2206 | if (ret) { | |
2207 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2208 | goto end; | |
2209 | } | |
fb198a11 JG |
2210 | /* /domain */ |
2211 | ret = config_writer_close_element(writer); | |
2212 | if (ret) { | |
2213 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2214 | goto end; | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | if (session->ust_session) { | |
51755dc8 | 2219 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2220 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2221 | goto end; |
2222 | } | |
2223 | ||
51755dc8 | 2224 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2225 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2226 | goto end; |
2227 | } | |
fb198a11 | 2228 | |
51755dc8 | 2229 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2230 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2231 | goto end; |
2232 | } | |
65d72c41 | 2233 | |
51755dc8 | 2234 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2235 | if (ret != LTTNG_OK) { |
51755dc8 | 2236 | goto end; |
fb198a11 JG |
2237 | } |
2238 | } | |
2239 | ||
2240 | /* /domains */ | |
2241 | ret = config_writer_close_element(writer); | |
2242 | if (ret) { | |
2243 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2244 | goto end; | |
2245 | } | |
55c9e7ca JR |
2246 | |
2247 | ret = LTTNG_OK; | |
fb198a11 JG |
2248 | end: |
2249 | return ret; | |
2250 | } | |
2251 | ||
55c9e7ca | 2252 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2253 | static |
2254 | int save_consumer_output(struct config_writer *writer, | |
2255 | struct consumer_output *output) | |
2256 | { | |
2257 | int ret; | |
2258 | ||
2259 | assert(writer); | |
2260 | assert(output); | |
2261 | ||
2262 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2263 | if (ret) { | |
2264 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2265 | goto end; | |
2266 | } | |
2267 | ||
2268 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
2269 | output->enabled); | |
2270 | if (ret) { | |
2271 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2272 | goto end; | |
2273 | } | |
2274 | ||
2275 | ret = config_writer_open_element(writer, config_element_destination); | |
2276 | if (ret) { | |
2277 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2278 | goto end; | |
2279 | } | |
2280 | ||
2281 | switch (output->type) { | |
2282 | case CONSUMER_DST_LOCAL: | |
2283 | ret = config_writer_write_element_string(writer, | |
366a9222 | 2284 | config_element_path, output->dst.session_root_path); |
fb198a11 JG |
2285 | if (ret) { |
2286 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2287 | goto end; | |
2288 | } | |
2289 | break; | |
2290 | case CONSUMER_DST_NET: | |
2291 | { | |
2292 | char *uri; | |
2293 | ||
2294 | uri = zmalloc(PATH_MAX); | |
2295 | if (!uri) { | |
2296 | ret = LTTNG_ERR_NOMEM; | |
2297 | goto end; | |
2298 | } | |
2299 | ||
2300 | ret = config_writer_open_element(writer, config_element_net_output); | |
2301 | if (ret) { | |
2302 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2303 | goto end_net_output; | |
2304 | } | |
2305 | ||
2306 | if (output->dst.net.control_isset && | |
2307 | output->dst.net.data_isset) { | |
2308 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); | |
2309 | if (ret < 0) { | |
2310 | ret = LTTNG_ERR_INVALID; | |
2311 | goto end_net_output; | |
2312 | } | |
2313 | ||
2314 | ret = config_writer_write_element_string(writer, | |
2315 | config_element_control_uri, uri); | |
2316 | if (ret) { | |
2317 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2318 | goto end_net_output; | |
2319 | } | |
2320 | ||
2321 | ret = uri_to_str_url(&output->dst.net.data, 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_data_uri, uri); | |
2329 | if (ret) { | |
2330 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2331 | goto end_net_output; | |
2332 | } | |
55c9e7ca | 2333 | ret = LTTNG_OK; |
fb198a11 JG |
2334 | end_net_output: |
2335 | free(uri); | |
55c9e7ca | 2336 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2337 | goto end; |
2338 | } | |
2339 | } else { | |
2340 | ret = !output->dst.net.control_isset ? | |
2341 | LTTNG_ERR_URL_CTRL_MISS : | |
2342 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2343 | free(uri); |
fb198a11 JG |
2344 | goto end; |
2345 | } | |
2346 | ||
2347 | ret = config_writer_close_element(writer); | |
2348 | if (ret) { | |
2349 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2350 | goto end; | |
2351 | } | |
2352 | break; | |
2353 | } | |
2354 | default: | |
2355 | ERR("Unsupported consumer output type."); | |
2356 | ret = LTTNG_ERR_INVALID; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
2360 | /* /destination */ | |
2361 | ret = config_writer_close_element(writer); | |
2362 | if (ret) { | |
2363 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2364 | goto end; | |
2365 | } | |
2366 | ||
2367 | /* /consumer_output */ | |
2368 | ret = config_writer_close_element(writer); | |
2369 | if (ret) { | |
2370 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2371 | goto end; | |
2372 | } | |
55c9e7ca JR |
2373 | |
2374 | ret = LTTNG_OK; | |
fb198a11 JG |
2375 | end: |
2376 | return ret; | |
2377 | } | |
2378 | ||
55c9e7ca | 2379 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2380 | static |
2381 | int save_snapshot_outputs(struct config_writer *writer, | |
2382 | struct snapshot *snapshot) | |
2383 | { | |
2384 | int ret; | |
2385 | struct lttng_ht_iter iter; | |
2386 | struct snapshot_output *output; | |
2387 | ||
2388 | assert(writer); | |
2389 | assert(snapshot); | |
2390 | ||
2391 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2392 | if (ret) { | |
2393 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2394 | goto end; | |
2395 | } | |
2396 | ||
2397 | rcu_read_lock(); | |
2398 | cds_lfht_for_each_entry(snapshot->output_ht->ht, &iter.iter, output, | |
2399 | node.node) { | |
2400 | ret = config_writer_open_element(writer, | |
2401 | config_element_output); | |
2402 | if (ret) { | |
2403 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2404 | goto end_unlock; | |
2405 | } | |
2406 | ||
2407 | ret = config_writer_write_element_string(writer, | |
2408 | config_element_name, output->name); | |
2409 | if (ret) { | |
2410 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2411 | goto end_unlock; | |
2412 | } | |
2413 | ||
2414 | ret = config_writer_write_element_unsigned_int(writer, | |
2415 | config_element_max_size, output->max_size); | |
2416 | if (ret) { | |
2417 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2418 | goto end_unlock; | |
2419 | } | |
2420 | ||
2421 | ret = save_consumer_output(writer, output->consumer); | |
55c9e7ca | 2422 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2423 | goto end_unlock; |
2424 | } | |
2425 | ||
2426 | /* /output */ | |
2427 | ret = config_writer_close_element(writer); | |
2428 | if (ret) { | |
2429 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2430 | goto end_unlock; | |
2431 | } | |
2432 | } | |
2433 | rcu_read_unlock(); | |
2434 | ||
2435 | /* /snapshot_outputs */ | |
2436 | ret = config_writer_close_element(writer); | |
2437 | if (ret) { | |
2438 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2439 | goto end; | |
2440 | } | |
2441 | ||
55c9e7ca | 2442 | ret = LTTNG_OK; |
fb198a11 JG |
2443 | end: |
2444 | return ret; | |
2445 | end_unlock: | |
2446 | rcu_read_unlock(); | |
2447 | return ret; | |
2448 | } | |
2449 | ||
55c9e7ca | 2450 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2451 | static |
2452 | int save_session_output(struct config_writer *writer, | |
2453 | struct ltt_session *session) | |
2454 | { | |
2455 | int ret; | |
2456 | ||
2457 | assert(writer); | |
2458 | assert(session); | |
2459 | ||
2460 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
2461 | (!session->snapshot_mode && !session->consumer)) { | |
2462 | /* Session is in no output mode */ | |
55c9e7ca | 2463 | ret = LTTNG_OK; |
fb198a11 JG |
2464 | goto end; |
2465 | } | |
2466 | ||
2467 | ret = config_writer_open_element(writer, config_element_output); | |
2468 | if (ret) { | |
2469 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2470 | goto end; | |
2471 | } | |
2472 | ||
2473 | if (session->snapshot_mode) { | |
2474 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2475 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2476 | goto end; |
2477 | } | |
2478 | } else { | |
2479 | if (session->consumer) { | |
2480 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2481 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2482 | goto end; |
2483 | } | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | /* /output */ | |
2488 | ret = config_writer_close_element(writer); | |
2489 | if (ret) { | |
2490 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2491 | goto end; | |
2492 | } | |
55c9e7ca | 2493 | ret = LTTNG_OK; |
fb198a11 JG |
2494 | end: |
2495 | return ret; | |
2496 | } | |
2497 | ||
ce6176f2 JG |
2498 | static |
2499 | int save_session_rotation_schedule(struct config_writer *writer, | |
2500 | enum lttng_rotation_schedule_type type, uint64_t value) | |
2501 | { | |
2502 | int ret = 0; | |
2503 | const char *element_name; | |
2504 | const char *value_name; | |
2505 | ||
2506 | switch (type) { | |
2507 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2508 | element_name = config_element_rotation_schedule_periodic; | |
2509 | value_name = config_element_rotation_schedule_periodic_time_us; | |
2510 | break; | |
2511 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2512 | element_name = config_element_rotation_schedule_size_threshold; | |
2513 | value_name = config_element_rotation_schedule_size_threshold_bytes; | |
2514 | break; | |
2515 | default: | |
2516 | ret = -1; | |
2517 | goto end; | |
2518 | } | |
2519 | ||
2520 | ret = config_writer_open_element(writer, element_name); | |
2521 | if (ret) { | |
2522 | goto end; | |
2523 | } | |
2524 | ||
2525 | ret = config_writer_write_element_unsigned_int(writer, | |
2526 | value_name, value); | |
2527 | if (ret) { | |
2528 | goto end; | |
2529 | } | |
2530 | ||
2531 | /* Close schedule descriptor element. */ | |
2532 | ret = config_writer_close_element(writer); | |
2533 | if (ret) { | |
2534 | goto end; | |
2535 | } | |
2536 | end: | |
2537 | return ret; | |
2538 | } | |
2539 | ||
2540 | static | |
2541 | int save_session_rotation_schedules(struct config_writer *writer, | |
2542 | struct ltt_session *session) | |
2543 | { | |
2544 | int ret; | |
2545 | ||
2546 | ret = config_writer_open_element(writer, | |
2547 | config_element_rotation_schedules); | |
f829d17a JG |
2548 | if (ret) { |
2549 | goto end; | |
2550 | } | |
ce6176f2 JG |
2551 | if (session->rotate_timer_period) { |
2552 | ret = save_session_rotation_schedule(writer, | |
2553 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, | |
2554 | session->rotate_timer_period); | |
2555 | if (ret) { | |
2556 | goto close_schedules; | |
2557 | } | |
2558 | } | |
2559 | if (session->rotate_size) { | |
2560 | ret = save_session_rotation_schedule(writer, | |
2561 | LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, | |
2562 | session->rotate_size); | |
2563 | if (ret) { | |
2564 | goto close_schedules; | |
2565 | } | |
2566 | } | |
2567 | ||
2568 | close_schedules: | |
2569 | /* Close rotation schedules element. */ | |
2570 | ret = config_writer_close_element(writer); | |
2571 | if (ret) { | |
2572 | goto end; | |
2573 | } | |
2574 | end: | |
2575 | return ret; | |
2576 | } | |
2577 | ||
fb198a11 JG |
2578 | /* |
2579 | * Save the given session. | |
2580 | * | |
55c9e7ca | 2581 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 JG |
2582 | */ |
2583 | static | |
2584 | int save_session(struct ltt_session *session, | |
2585 | struct lttng_save_session_attr *attr, lttng_sock_cred *creds) | |
2586 | { | |
b45f9ad2 | 2587 | int ret, fd = -1; |
511653c3 | 2588 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 JG |
2589 | size_t len; |
2590 | struct config_writer *writer = NULL; | |
2591 | size_t session_name_len; | |
2592 | const char *provided_path; | |
f376ad9c | 2593 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 JG |
2594 | |
2595 | assert(session); | |
2596 | assert(attr); | |
2597 | assert(creds); | |
2598 | ||
2599 | session_name_len = strlen(session->name); | |
95a29ab8 | 2600 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 JG |
2601 | |
2602 | if (!session_access_ok(session, | |
2603 | LTTNG_SOCK_GET_UID_CRED(creds), | |
e32d7f27 | 2604 | LTTNG_SOCK_GET_GID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2605 | ret = LTTNG_ERR_EPERM; |
2606 | goto end; | |
2607 | } | |
2608 | ||
2609 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2610 | if (provided_path) { | |
95a29ab8 | 2611 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2612 | len = strlen(provided_path); |
d2992717 | 2613 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2614 | ret = LTTNG_ERR_SET_URL; |
2615 | goto end; | |
2616 | } | |
511653c3 | 2617 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2618 | } else { |
7e078ad1 | 2619 | ssize_t ret_len; |
fb198a11 JG |
2620 | char *home_dir = utils_get_user_home_dir( |
2621 | LTTNG_SOCK_GET_UID_CRED(creds)); | |
2622 | if (!home_dir) { | |
2623 | ret = LTTNG_ERR_SET_URL; | |
2624 | goto end; | |
2625 | } | |
2626 | ||
d2992717 | 2627 | ret_len = snprintf(config_file_path, sizeof(config_file_path), |
fb198a11 JG |
2628 | DEFAULT_SESSION_HOME_CONFIGPATH, home_dir); |
2629 | free(home_dir); | |
7e078ad1 | 2630 | if (ret_len < 0) { |
fb198a11 JG |
2631 | PERROR("snprintf save session"); |
2632 | ret = LTTNG_ERR_SET_URL; | |
2633 | goto end; | |
2634 | } | |
7e078ad1 | 2635 | len = ret_len; |
fb198a11 JG |
2636 | } |
2637 | ||
2638 | /* | |
d2992717 DG |
2639 | * Check the path fits in the config file path dst including the '/' |
2640 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2641 | */ |
d2992717 DG |
2642 | if ((len + session_name_len + 2 + |
2643 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) | |
2644 | > sizeof(config_file_path)) { | |
fb198a11 JG |
2645 | ret = LTTNG_ERR_SET_URL; |
2646 | goto end; | |
2647 | } | |
2648 | ||
2649 | ret = run_as_mkdir_recursive(config_file_path, S_IRWXU | S_IRWXG, | |
2650 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2651 | if (ret) { | |
2652 | ret = LTTNG_ERR_SET_URL; | |
2653 | goto end; | |
2654 | } | |
2655 | ||
d2992717 DG |
2656 | /* |
2657 | * At this point, we know that everything fits in the buffer. Validation | |
2658 | * was done just above. | |
2659 | */ | |
fb198a11 | 2660 | config_file_path[len++] = '/'; |
511653c3 | 2661 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2662 | len += session_name_len; |
2663 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2664 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2665 | config_file_path[len] = '\0'; | |
fb198a11 | 2666 | |
f376ad9c JG |
2667 | if (!attr->overwrite) { |
2668 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2669 | } |
2670 | ||
f376ad9c | 2671 | fd = run_as_open(config_file_path, file_open_flags, |
fb198a11 JG |
2672 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, |
2673 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2674 | if (fd < 0) { | |
2675 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2676 | switch (errno) { |
2677 | case EEXIST: | |
2678 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2679 | break; | |
2680 | case EACCES: | |
2681 | ret = LTTNG_ERR_EPERM; | |
2682 | break; | |
2683 | default: | |
2684 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2685 | break; | |
2686 | } | |
fb198a11 JG |
2687 | goto end; |
2688 | } | |
2689 | ||
705bb62f | 2690 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2691 | if (!writer) { |
2692 | ret = LTTNG_ERR_NOMEM; | |
2693 | goto end; | |
2694 | } | |
2695 | ||
2696 | ret = config_writer_open_element(writer, config_element_sessions); | |
2697 | if (ret) { | |
2698 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2699 | goto end; | |
2700 | } | |
2701 | ||
2702 | ret = config_writer_open_element(writer, config_element_session); | |
2703 | if (ret) { | |
2704 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2705 | goto end; | |
2706 | } | |
2707 | ||
2708 | ret = config_writer_write_element_string(writer, config_element_name, | |
2709 | session->name); | |
2710 | if (ret) { | |
2711 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2712 | goto end; | |
2713 | } | |
2714 | ||
55c9e7ca | 2715 | if (session->shm_path[0] != '\0') { |
9e7c9f56 JR |
2716 | ret = config_writer_write_element_string(writer, |
2717 | config_element_shared_memory_path, | |
2718 | session->shm_path); | |
2719 | if (ret) { | |
2720 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2721 | goto end; | |
2722 | } | |
2723 | } | |
2724 | ||
fb198a11 | 2725 | ret = save_domains(writer, session); |
55c9e7ca | 2726 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2727 | goto end; |
2728 | } | |
2729 | ||
2730 | ret = config_writer_write_element_bool(writer, config_element_started, | |
8382cf6f | 2731 | session->active); |
fb198a11 JG |
2732 | if (ret) { |
2733 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2734 | goto end; | |
2735 | } | |
2736 | ||
329f3443 JD |
2737 | if (session->snapshot_mode || session->live_timer || |
2738 | session->rotate_timer_period || session->rotate_size) { | |
fb198a11 JG |
2739 | ret = config_writer_open_element(writer, config_element_attributes); |
2740 | if (ret) { | |
2741 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2742 | goto end; | |
2743 | } | |
2744 | ||
2745 | if (session->snapshot_mode) { | |
2746 | ret = config_writer_write_element_bool(writer, | |
2747 | config_element_snapshot_mode, 1); | |
2748 | if (ret) { | |
2749 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2750 | goto end; | |
2751 | } | |
329f3443 | 2752 | } else if (session->live_timer) { |
d98ad589 | 2753 | ret = config_writer_write_element_unsigned_int(writer, |
fb198a11 JG |
2754 | config_element_live_timer_interval, session->live_timer); |
2755 | if (ret) { | |
2756 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2757 | goto end; | |
2758 | } | |
2759 | } | |
ce6176f2 JG |
2760 | if (session->rotate_timer_period || session->rotate_size) { |
2761 | ret = save_session_rotation_schedules(writer, | |
2762 | session); | |
329f3443 JD |
2763 | if (ret) { |
2764 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2765 | goto end; | |
2766 | } | |
2767 | } | |
fb198a11 JG |
2768 | |
2769 | /* /attributes */ | |
2770 | ret = config_writer_close_element(writer); | |
2771 | if (ret) { | |
2772 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2773 | goto end; | |
2774 | } | |
2775 | } | |
2776 | ||
2777 | ret = save_session_output(writer, session); | |
55c9e7ca | 2778 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2779 | goto end; |
2780 | } | |
2781 | ||
2782 | /* /session */ | |
2783 | ret = config_writer_close_element(writer); | |
2784 | if (ret) { | |
2785 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2786 | goto end; | |
2787 | } | |
2788 | ||
2789 | /* /sessions */ | |
2790 | ret = config_writer_close_element(writer); | |
2791 | if (ret) { | |
2792 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2793 | goto end; | |
2794 | } | |
55c9e7ca JR |
2795 | |
2796 | ret = LTTNG_OK; | |
fb198a11 JG |
2797 | end: |
2798 | if (writer && config_writer_destroy(writer)) { | |
2799 | /* Preserve the original error code */ | |
55c9e7ca | 2800 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 2801 | } |
55c9e7ca | 2802 | if (ret != LTTNG_OK) { |
fb198a11 | 2803 | /* Delete file in case of error */ |
b45f9ad2 | 2804 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
2805 | PERROR("Unlinking XML session configuration."); |
2806 | } | |
2807 | } | |
2808 | ||
b45f9ad2 | 2809 | if (fd >= 0) { |
55c9e7ca JR |
2810 | int closeret; |
2811 | ||
2812 | closeret = close(fd); | |
2813 | if (closeret) { | |
1d12100d JR |
2814 | PERROR("Closing XML session configuration"); |
2815 | } | |
2816 | } | |
2817 | ||
fb198a11 JG |
2818 | return ret; |
2819 | } | |
2820 | ||
2821 | int cmd_save_sessions(struct lttng_save_session_attr *attr, | |
2822 | lttng_sock_cred *creds) | |
2823 | { | |
2824 | int ret; | |
2825 | const char *session_name; | |
2826 | struct ltt_session *session; | |
2827 | ||
2828 | session_lock_list(); | |
2829 | ||
2830 | session_name = lttng_save_session_attr_get_session_name(attr); | |
2831 | if (session_name) { | |
2832 | session = session_find_by_name(session_name); | |
2833 | if (!session) { | |
2834 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
2835 | goto end; | |
2836 | } | |
2837 | ||
2838 | session_lock(session); | |
2839 | ret = save_session(session, attr, creds); | |
2840 | session_unlock(session); | |
e32d7f27 | 2841 | session_put(session); |
55c9e7ca | 2842 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2843 | goto end; |
2844 | } | |
2845 | } else { | |
2846 | struct ltt_session_list *list = session_get_list(); | |
2847 | ||
2848 | cds_list_for_each_entry(session, &list->head, list) { | |
e32d7f27 JG |
2849 | if (!session_get(session)) { |
2850 | continue; | |
2851 | } | |
fb198a11 JG |
2852 | session_lock(session); |
2853 | ret = save_session(session, attr, creds); | |
2854 | session_unlock(session); | |
e32d7f27 | 2855 | session_put(session); |
fb198a11 | 2856 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 2857 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
2858 | goto end; |
2859 | } | |
2860 | } | |
2861 | } | |
2862 | ret = LTTNG_OK; | |
2863 | ||
2864 | end: | |
2865 | session_unlock_list(); | |
2866 | return ret; | |
2867 | } |