Commit | Line | Data |
---|---|---|
fb198a11 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
fb198a11 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
fb198a11 | 5 | * |
fb198a11 JG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
fb198a11 JG |
9 | #include <inttypes.h> |
10 | #include <string.h> | |
11 | #include <urcu/uatomic.h> | |
12 | #include <unistd.h> | |
13 | ||
14 | #include <common/defaults.h> | |
15 | #include <common/error.h> | |
f40ef1d5 | 16 | #include <common/config/session-config.h> |
fb198a11 JG |
17 | #include <common/utils.h> |
18 | #include <common/runas.h> | |
19 | #include <lttng/save-internal.h> | |
20 | ||
847a5916 | 21 | #include "kernel.h" |
fb198a11 JG |
22 | #include "save.h" |
23 | #include "session.h" | |
0dbc2034 | 24 | #include "lttng-syscall.h" |
fb198a11 | 25 | #include "trace-ust.h" |
51755dc8 | 26 | #include "agent.h" |
fb198a11 | 27 | |
55c9e7ca | 28 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
29 | static |
30 | int save_kernel_channel_attributes(struct config_writer *writer, | |
31 | struct lttng_channel_attr *attr) | |
32 | { | |
33 | int ret; | |
34 | ||
35 | ret = config_writer_write_element_string(writer, | |
36 | config_element_overwrite_mode, | |
37 | attr->overwrite ? config_overwrite_mode_overwrite : | |
38 | config_overwrite_mode_discard); | |
39 | if (ret) { | |
55c9e7ca | 40 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
41 | goto end; |
42 | } | |
43 | ||
44 | ret = config_writer_write_element_unsigned_int(writer, | |
45 | config_element_subbuf_size, attr->subbuf_size); | |
46 | if (ret) { | |
55c9e7ca | 47 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
48 | goto end; |
49 | } | |
50 | ||
51 | ret = config_writer_write_element_unsigned_int(writer, | |
52 | config_element_num_subbuf, | |
53 | attr->num_subbuf); | |
54 | if (ret) { | |
55c9e7ca | 55 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
56 | goto end; |
57 | } | |
58 | ||
59 | ret = config_writer_write_element_unsigned_int(writer, | |
60 | config_element_switch_timer_interval, | |
61 | attr->switch_timer_interval); | |
62 | if (ret) { | |
55c9e7ca | 63 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
64 | goto end; |
65 | } | |
66 | ||
67 | ret = config_writer_write_element_unsigned_int(writer, | |
68 | config_element_read_timer_interval, | |
69 | attr->read_timer_interval); | |
70 | if (ret) { | |
55c9e7ca | 71 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
72 | goto end; |
73 | } | |
74 | ||
75 | ret = config_writer_write_element_string(writer, | |
76 | config_element_output_type, | |
77 | attr->output == LTTNG_EVENT_SPLICE ? | |
78 | config_output_type_splice : config_output_type_mmap); | |
79 | if (ret) { | |
55c9e7ca | 80 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
81 | goto end; |
82 | } | |
83 | ||
84 | ret = config_writer_write_element_unsigned_int(writer, | |
85 | config_element_tracefile_size, attr->tracefile_size); | |
86 | if (ret) { | |
55c9e7ca | 87 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
88 | goto end; |
89 | } | |
90 | ||
91 | ret = config_writer_write_element_unsigned_int(writer, | |
92 | config_element_tracefile_count, | |
93 | attr->tracefile_count); | |
94 | if (ret) { | |
55c9e7ca | 95 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
96 | goto end; |
97 | } | |
98 | ||
99 | ret = config_writer_write_element_unsigned_int(writer, | |
100 | config_element_live_timer_interval, | |
101 | attr->live_timer_interval); | |
102 | if (ret) { | |
55c9e7ca | 103 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
104 | goto end; |
105 | } | |
4fc2b126 JR |
106 | |
107 | if (attr->extended.ptr) { | |
108 | struct lttng_channel_extended *ext = NULL; | |
109 | ||
110 | ext = (struct lttng_channel_extended *) attr->extended.ptr; | |
111 | ret = config_writer_write_element_unsigned_int(writer, | |
112 | config_element_monitor_timer_interval, | |
113 | ext->monitor_timer_interval); | |
114 | if (ret) { | |
55c9e7ca | 115 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
116 | goto end; |
117 | } | |
275472aa JR |
118 | |
119 | ret = config_writer_write_element_signed_int(writer, | |
120 | config_element_blocking_timeout, | |
121 | ext->blocking_timeout); | |
122 | if (ret) { | |
55c9e7ca | 123 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
124 | goto end; |
125 | } | |
4fc2b126 JR |
126 | } |
127 | ||
55c9e7ca | 128 | ret = LTTNG_OK; |
fb198a11 | 129 | end: |
55c9e7ca | 130 | return ret; |
fb198a11 JG |
131 | } |
132 | ||
55c9e7ca | 133 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
134 | static |
135 | int save_ust_channel_attributes(struct config_writer *writer, | |
fc4b93fa | 136 | struct lttng_ust_abi_channel_attr *attr) |
fb198a11 JG |
137 | { |
138 | int ret; | |
4fc2b126 | 139 | struct ltt_ust_channel *channel = NULL; |
fb198a11 JG |
140 | |
141 | ret = config_writer_write_element_string(writer, | |
142 | config_element_overwrite_mode, | |
143 | attr->overwrite ? config_overwrite_mode_overwrite : | |
144 | config_overwrite_mode_discard); | |
145 | if (ret) { | |
55c9e7ca | 146 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
147 | goto end; |
148 | } | |
149 | ||
150 | ret = config_writer_write_element_unsigned_int(writer, | |
151 | config_element_subbuf_size, attr->subbuf_size); | |
152 | if (ret) { | |
55c9e7ca | 153 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
154 | goto end; |
155 | } | |
156 | ||
157 | ret = config_writer_write_element_unsigned_int(writer, | |
158 | config_element_num_subbuf, | |
159 | attr->num_subbuf); | |
160 | if (ret) { | |
55c9e7ca | 161 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
162 | goto end; |
163 | } | |
164 | ||
165 | ret = config_writer_write_element_unsigned_int(writer, | |
166 | config_element_switch_timer_interval, | |
167 | attr->switch_timer_interval); | |
168 | if (ret) { | |
55c9e7ca | 169 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
170 | goto end; |
171 | } | |
172 | ||
173 | ret = config_writer_write_element_unsigned_int(writer, | |
174 | config_element_read_timer_interval, | |
175 | attr->read_timer_interval); | |
176 | if (ret) { | |
55c9e7ca | 177 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
178 | goto end; |
179 | } | |
180 | ||
181 | ret = config_writer_write_element_string(writer, | |
182 | config_element_output_type, | |
fc4b93fa | 183 | attr->output == LTTNG_UST_ABI_MMAP ? |
fb198a11 JG |
184 | config_output_type_mmap : config_output_type_splice); |
185 | if (ret) { | |
55c9e7ca | 186 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
187 | goto end; |
188 | } | |
4fc2b126 | 189 | |
275472aa JR |
190 | ret = config_writer_write_element_signed_int(writer, |
191 | config_element_blocking_timeout, | |
192 | attr->u.s.blocking_timeout); | |
193 | if (ret) { | |
55c9e7ca | 194 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
195 | goto end; |
196 | } | |
197 | ||
4fc2b126 JR |
198 | /* |
199 | * Fetch the monitor timer which is located in the parent of | |
200 | * lttng_ust_channel_attr | |
201 | */ | |
202 | channel = caa_container_of(attr, struct ltt_ust_channel, attr); | |
203 | ret = config_writer_write_element_unsigned_int(writer, | |
204 | config_element_monitor_timer_interval, | |
205 | channel->monitor_timer_interval); | |
206 | if (ret) { | |
55c9e7ca | 207 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
208 | goto end; |
209 | } | |
210 | ||
55c9e7ca | 211 | ret = LTTNG_OK; |
fb198a11 | 212 | end: |
55c9e7ca | 213 | return ret; |
fb198a11 JG |
214 | } |
215 | ||
216 | static | |
217 | const char *get_kernel_instrumentation_string( | |
b8e2fb80 | 218 | enum lttng_kernel_abi_instrumentation instrumentation) |
fb198a11 JG |
219 | { |
220 | const char *instrumentation_string; | |
221 | ||
222 | switch (instrumentation) { | |
b8e2fb80 | 223 | case LTTNG_KERNEL_ABI_ALL: |
fb198a11 JG |
224 | instrumentation_string = config_event_type_all; |
225 | break; | |
b8e2fb80 | 226 | case LTTNG_KERNEL_ABI_TRACEPOINT: |
fb198a11 JG |
227 | instrumentation_string = config_event_type_tracepoint; |
228 | break; | |
b8e2fb80 | 229 | case LTTNG_KERNEL_ABI_KPROBE: |
9d82c4c2 | 230 | instrumentation_string = config_event_type_probe; |
fb198a11 | 231 | break; |
b8e2fb80 | 232 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
233 | instrumentation_string = config_event_type_userspace_probe; |
234 | break; | |
b8e2fb80 | 235 | case LTTNG_KERNEL_ABI_FUNCTION: |
9d82c4c2 | 236 | instrumentation_string = config_event_type_function_entry; |
fb198a11 | 237 | break; |
b8e2fb80 | 238 | case LTTNG_KERNEL_ABI_KRETPROBE: |
9d82c4c2 | 239 | instrumentation_string = config_event_type_function; |
fb198a11 | 240 | break; |
b8e2fb80 | 241 | case LTTNG_KERNEL_ABI_NOOP: |
fb198a11 JG |
242 | instrumentation_string = config_event_type_noop; |
243 | break; | |
b8e2fb80 | 244 | case LTTNG_KERNEL_ABI_SYSCALL: |
fb198a11 JG |
245 | instrumentation_string = config_event_type_syscall; |
246 | break; | |
247 | default: | |
248 | instrumentation_string = NULL; | |
249 | } | |
250 | ||
251 | return instrumentation_string; | |
252 | } | |
253 | ||
254 | static | |
255 | const char *get_kernel_context_type_string( | |
b8e2fb80 | 256 | enum lttng_kernel_abi_context_type context_type) |
fb198a11 JG |
257 | { |
258 | const char *context_type_string; | |
259 | ||
260 | switch (context_type) { | |
b8e2fb80 | 261 | case LTTNG_KERNEL_ABI_CONTEXT_PID: |
fb198a11 JG |
262 | context_type_string = config_event_context_pid; |
263 | break; | |
b8e2fb80 | 264 | case LTTNG_KERNEL_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
265 | context_type_string = config_event_context_procname; |
266 | break; | |
b8e2fb80 | 267 | case LTTNG_KERNEL_ABI_CONTEXT_PRIO: |
fb198a11 JG |
268 | context_type_string = config_event_context_prio; |
269 | break; | |
b8e2fb80 | 270 | case LTTNG_KERNEL_ABI_CONTEXT_NICE: |
fb198a11 JG |
271 | context_type_string = config_event_context_nice; |
272 | break; | |
b8e2fb80 | 273 | case LTTNG_KERNEL_ABI_CONTEXT_VPID: |
fb198a11 JG |
274 | context_type_string = config_event_context_vpid; |
275 | break; | |
b8e2fb80 | 276 | case LTTNG_KERNEL_ABI_CONTEXT_TID: |
fb198a11 JG |
277 | context_type_string = config_event_context_tid; |
278 | break; | |
b8e2fb80 | 279 | case LTTNG_KERNEL_ABI_CONTEXT_VTID: |
fb198a11 JG |
280 | context_type_string = config_event_context_vtid; |
281 | break; | |
b8e2fb80 | 282 | case LTTNG_KERNEL_ABI_CONTEXT_PPID: |
fb198a11 JG |
283 | context_type_string = config_event_context_ppid; |
284 | break; | |
b8e2fb80 | 285 | case LTTNG_KERNEL_ABI_CONTEXT_VPPID: |
fb198a11 JG |
286 | context_type_string = config_event_context_vppid; |
287 | break; | |
b8e2fb80 | 288 | case LTTNG_KERNEL_ABI_CONTEXT_HOSTNAME: |
fb198a11 JG |
289 | context_type_string = config_event_context_hostname; |
290 | break; | |
b8e2fb80 | 291 | case LTTNG_KERNEL_ABI_CONTEXT_INTERRUPTIBLE: |
1ae5e83e JD |
292 | context_type_string = config_event_context_interruptible; |
293 | break; | |
b8e2fb80 | 294 | case LTTNG_KERNEL_ABI_CONTEXT_PREEMPTIBLE: |
1ae5e83e JD |
295 | context_type_string = config_event_context_preemptible; |
296 | break; | |
b8e2fb80 | 297 | case LTTNG_KERNEL_ABI_CONTEXT_NEED_RESCHEDULE: |
1ae5e83e JD |
298 | context_type_string = config_event_context_need_reschedule; |
299 | break; | |
b8e2fb80 | 300 | case LTTNG_KERNEL_ABI_CONTEXT_MIGRATABLE: |
1ae5e83e JD |
301 | context_type_string = config_event_context_migratable; |
302 | break; | |
b8e2fb80 | 303 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_USER: |
16c4c991 FD |
304 | context_type_string = config_event_context_callstack_user; |
305 | break; | |
b8e2fb80 | 306 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_KERNEL: |
16c4c991 FD |
307 | context_type_string = config_event_context_callstack_kernel; |
308 | break; | |
b8e2fb80 | 309 | case LTTNG_KERNEL_ABI_CONTEXT_CGROUP_NS: |
40e14884 MJ |
310 | context_type_string = config_event_context_cgroup_ns; |
311 | break; | |
b8e2fb80 | 312 | case LTTNG_KERNEL_ABI_CONTEXT_IPC_NS: |
40e14884 MJ |
313 | context_type_string = config_event_context_ipc_ns; |
314 | break; | |
b8e2fb80 | 315 | case LTTNG_KERNEL_ABI_CONTEXT_MNT_NS: |
40e14884 MJ |
316 | context_type_string = config_event_context_mnt_ns; |
317 | break; | |
b8e2fb80 | 318 | case LTTNG_KERNEL_ABI_CONTEXT_NET_NS: |
40e14884 MJ |
319 | context_type_string = config_event_context_net_ns; |
320 | break; | |
b8e2fb80 | 321 | case LTTNG_KERNEL_ABI_CONTEXT_PID_NS: |
40e14884 MJ |
322 | context_type_string = config_event_context_pid_ns; |
323 | break; | |
b8e2fb80 | 324 | case LTTNG_KERNEL_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
325 | context_type_string = config_event_context_time_ns; |
326 | break; | |
b8e2fb80 | 327 | case LTTNG_KERNEL_ABI_CONTEXT_USER_NS: |
40e14884 MJ |
328 | context_type_string = config_event_context_user_ns; |
329 | break; | |
b8e2fb80 | 330 | case LTTNG_KERNEL_ABI_CONTEXT_UTS_NS: |
40e14884 MJ |
331 | context_type_string = config_event_context_uts_ns; |
332 | break; | |
b8e2fb80 | 333 | case LTTNG_KERNEL_ABI_CONTEXT_UID: |
499cbfa1 MJ |
334 | context_type_string = config_event_context_uid; |
335 | break; | |
b8e2fb80 | 336 | case LTTNG_KERNEL_ABI_CONTEXT_EUID: |
499cbfa1 MJ |
337 | context_type_string = config_event_context_euid; |
338 | break; | |
b8e2fb80 | 339 | case LTTNG_KERNEL_ABI_CONTEXT_SUID: |
499cbfa1 MJ |
340 | context_type_string = config_event_context_suid; |
341 | break; | |
b8e2fb80 | 342 | case LTTNG_KERNEL_ABI_CONTEXT_GID: |
499cbfa1 MJ |
343 | context_type_string = config_event_context_gid; |
344 | break; | |
b8e2fb80 | 345 | case LTTNG_KERNEL_ABI_CONTEXT_EGID: |
499cbfa1 MJ |
346 | context_type_string = config_event_context_egid; |
347 | break; | |
b8e2fb80 | 348 | case LTTNG_KERNEL_ABI_CONTEXT_SGID: |
499cbfa1 MJ |
349 | context_type_string = config_event_context_sgid; |
350 | break; | |
b8e2fb80 | 351 | case LTTNG_KERNEL_ABI_CONTEXT_VUID: |
499cbfa1 MJ |
352 | context_type_string = config_event_context_vuid; |
353 | break; | |
b8e2fb80 | 354 | case LTTNG_KERNEL_ABI_CONTEXT_VEUID: |
499cbfa1 MJ |
355 | context_type_string = config_event_context_veuid; |
356 | break; | |
b8e2fb80 | 357 | case LTTNG_KERNEL_ABI_CONTEXT_VSUID: |
499cbfa1 MJ |
358 | context_type_string = config_event_context_vsuid; |
359 | break; | |
b8e2fb80 | 360 | case LTTNG_KERNEL_ABI_CONTEXT_VGID: |
499cbfa1 MJ |
361 | context_type_string = config_event_context_vgid; |
362 | break; | |
b8e2fb80 | 363 | case LTTNG_KERNEL_ABI_CONTEXT_VEGID: |
499cbfa1 MJ |
364 | context_type_string = config_event_context_vegid; |
365 | break; | |
b8e2fb80 | 366 | case LTTNG_KERNEL_ABI_CONTEXT_VSGID: |
499cbfa1 MJ |
367 | context_type_string = config_event_context_vsgid; |
368 | break; | |
fb198a11 JG |
369 | default: |
370 | context_type_string = NULL; | |
371 | } | |
372 | ||
373 | return context_type_string; | |
374 | } | |
375 | ||
376 | static | |
377 | const char *get_ust_context_type_string( | |
fc4b93fa | 378 | enum lttng_ust_abi_context_type context_type) |
fb198a11 JG |
379 | { |
380 | const char *context_type_string; | |
381 | ||
382 | switch (context_type) { | |
fc4b93fa | 383 | case LTTNG_UST_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
384 | context_type_string = config_event_context_procname; |
385 | break; | |
fc4b93fa | 386 | case LTTNG_UST_ABI_CONTEXT_VPID: |
fb198a11 JG |
387 | context_type_string = config_event_context_vpid; |
388 | break; | |
fc4b93fa | 389 | case LTTNG_UST_ABI_CONTEXT_VTID: |
fb198a11 JG |
390 | context_type_string = config_event_context_vtid; |
391 | break; | |
fc4b93fa | 392 | case LTTNG_UST_ABI_CONTEXT_IP: |
fb198a11 JG |
393 | context_type_string = config_event_context_ip; |
394 | break; | |
fc4b93fa | 395 | case LTTNG_UST_ABI_CONTEXT_PTHREAD_ID: |
fb198a11 JG |
396 | context_type_string = config_event_context_pthread_id; |
397 | break; | |
fc4b93fa | 398 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
399 | context_type_string = config_event_context_app; |
400 | break; | |
fc4b93fa | 401 | case LTTNG_UST_ABI_CONTEXT_CGROUP_NS: |
f17b8732 MJ |
402 | context_type_string = config_event_context_cgroup_ns; |
403 | break; | |
fc4b93fa | 404 | case LTTNG_UST_ABI_CONTEXT_IPC_NS: |
f17b8732 MJ |
405 | context_type_string = config_event_context_ipc_ns; |
406 | break; | |
fc4b93fa | 407 | case LTTNG_UST_ABI_CONTEXT_MNT_NS: |
f17b8732 MJ |
408 | context_type_string = config_event_context_mnt_ns; |
409 | break; | |
fc4b93fa | 410 | case LTTNG_UST_ABI_CONTEXT_NET_NS: |
f17b8732 MJ |
411 | context_type_string = config_event_context_net_ns; |
412 | break; | |
fc4b93fa | 413 | case LTTNG_UST_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
414 | context_type_string = config_event_context_time_ns; |
415 | break; | |
fc4b93fa | 416 | case LTTNG_UST_ABI_CONTEXT_PID_NS: |
f17b8732 MJ |
417 | context_type_string = config_event_context_pid_ns; |
418 | break; | |
fc4b93fa | 419 | case LTTNG_UST_ABI_CONTEXT_USER_NS: |
f17b8732 MJ |
420 | context_type_string = config_event_context_user_ns; |
421 | break; | |
fc4b93fa | 422 | case LTTNG_UST_ABI_CONTEXT_UTS_NS: |
f17b8732 MJ |
423 | context_type_string = config_event_context_uts_ns; |
424 | break; | |
fc4b93fa | 425 | case LTTNG_UST_ABI_CONTEXT_VUID: |
4fc59cb8 MJ |
426 | context_type_string = config_event_context_vuid; |
427 | break; | |
fc4b93fa | 428 | case LTTNG_UST_ABI_CONTEXT_VEUID: |
4fc59cb8 MJ |
429 | context_type_string = config_event_context_veuid; |
430 | break; | |
fc4b93fa | 431 | case LTTNG_UST_ABI_CONTEXT_VSUID: |
4fc59cb8 MJ |
432 | context_type_string = config_event_context_vsuid; |
433 | break; | |
fc4b93fa | 434 | case LTTNG_UST_ABI_CONTEXT_VGID: |
4fc59cb8 MJ |
435 | context_type_string = config_event_context_vgid; |
436 | break; | |
fc4b93fa | 437 | case LTTNG_UST_ABI_CONTEXT_VEGID: |
4fc59cb8 MJ |
438 | context_type_string = config_event_context_vegid; |
439 | break; | |
fc4b93fa | 440 | case LTTNG_UST_ABI_CONTEXT_VSGID: |
4fc59cb8 MJ |
441 | context_type_string = config_event_context_vsgid; |
442 | break; | |
fc4b93fa | 443 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
14ce5bd8 JG |
444 | /* |
445 | * Error, should not be stored in the XML, perf contexts | |
446 | * are stored as a node of type event_perf_context_type. | |
447 | */ | |
fb198a11 JG |
448 | default: |
449 | context_type_string = NULL; | |
e885a367 | 450 | break; |
fb198a11 JG |
451 | } |
452 | ||
453 | return context_type_string; | |
454 | } | |
455 | ||
456 | static | |
457 | const char *get_buffer_type_string( | |
458 | enum lttng_buffer_type buffer_type) | |
459 | { | |
460 | const char *buffer_type_string; | |
461 | ||
462 | switch (buffer_type) { | |
463 | case LTTNG_BUFFER_PER_PID: | |
464 | buffer_type_string = config_buffer_type_per_pid; | |
465 | break; | |
466 | case LTTNG_BUFFER_PER_UID: | |
467 | buffer_type_string = config_buffer_type_per_uid; | |
468 | break; | |
469 | case LTTNG_BUFFER_GLOBAL: | |
470 | buffer_type_string = config_buffer_type_global; | |
471 | break; | |
472 | default: | |
473 | buffer_type_string = NULL; | |
474 | } | |
475 | ||
476 | return buffer_type_string; | |
477 | } | |
478 | ||
479 | static | |
480 | const char *get_loglevel_type_string( | |
fc4b93fa | 481 | enum lttng_ust_abi_loglevel_type loglevel_type) |
fb198a11 JG |
482 | { |
483 | const char *loglevel_type_string; | |
484 | ||
485 | switch (loglevel_type) { | |
fc4b93fa | 486 | case LTTNG_UST_ABI_LOGLEVEL_ALL: |
fb198a11 JG |
487 | loglevel_type_string = config_loglevel_type_all; |
488 | break; | |
fc4b93fa | 489 | case LTTNG_UST_ABI_LOGLEVEL_RANGE: |
fb198a11 JG |
490 | loglevel_type_string = config_loglevel_type_range; |
491 | break; | |
fc4b93fa | 492 | case LTTNG_UST_ABI_LOGLEVEL_SINGLE: |
fb198a11 JG |
493 | loglevel_type_string = config_loglevel_type_single; |
494 | break; | |
495 | default: | |
496 | loglevel_type_string = NULL; | |
497 | } | |
498 | ||
499 | return loglevel_type_string; | |
500 | } | |
501 | ||
55c9e7ca | 502 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 | 503 | static |
83712c39 FD |
504 | int save_kernel_function_event(struct config_writer *writer, |
505 | struct ltt_kernel_event *event) | |
506 | { | |
507 | int ret; | |
508 | ||
509 | ret = config_writer_open_element(writer, config_element_function_attributes); | |
510 | if (ret) { | |
511 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
512 | goto end; | |
513 | } | |
514 | ||
515 | ret = config_writer_write_element_string(writer, config_element_name, | |
516 | event->event->u.ftrace.symbol_name); | |
517 | if (ret) { | |
518 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
519 | goto end; | |
520 | } | |
521 | ||
522 | /* /function attributes */ | |
523 | ret = config_writer_close_element(writer); | |
524 | if (ret) { | |
525 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
526 | goto end; | |
527 | } | |
528 | end: | |
529 | return ret; | |
530 | } | |
531 | ||
532 | static | |
533 | int save_kernel_kprobe_event(struct config_writer *writer, | |
534 | struct ltt_kernel_event *event) | |
535 | { | |
536 | int ret; | |
537 | const char *symbol_name; | |
538 | uint64_t addr; | |
539 | uint64_t offset; | |
540 | ||
541 | switch (event->event->instrumentation) { | |
b8e2fb80 | 542 | case LTTNG_KERNEL_ABI_KPROBE: |
83712c39 FD |
543 | /* |
544 | * Comments in lttng-kernel.h mention that | |
545 | * either addr or symbol_name are set, not both. | |
546 | */ | |
547 | addr = event->event->u.kprobe.addr; | |
548 | offset = event->event->u.kprobe.offset; | |
549 | symbol_name = addr ? NULL : event->event->u.kprobe.symbol_name; | |
550 | break; | |
b8e2fb80 | 551 | case LTTNG_KERNEL_ABI_KRETPROBE: |
83712c39 FD |
552 | addr = event->event->u.kretprobe.addr; |
553 | offset = event->event->u.kretprobe.offset; | |
c1e83fb4 | 554 | symbol_name = addr ? NULL : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
555 | break; |
556 | default: | |
a0377dfe | 557 | LTTNG_ASSERT(1); |
c1e83fb4 FD |
558 | ERR("Unsupported kernel instrumentation type."); |
559 | ret = LTTNG_ERR_INVALID; | |
560 | goto end; | |
83712c39 FD |
561 | } |
562 | ||
563 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
564 | if (ret) { | |
565 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
566 | goto end; | |
567 | } | |
568 | ||
c1e83fb4 FD |
569 | if (addr) { |
570 | ret = config_writer_write_element_unsigned_int( writer, | |
571 | config_element_address, addr); | |
572 | if (ret) { | |
573 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
574 | goto end; | |
575 | } | |
576 | } else if (symbol_name) { | |
83712c39 FD |
577 | ret = config_writer_write_element_string(writer, |
578 | config_element_symbol_name, symbol_name); | |
579 | if (ret) { | |
580 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
581 | goto end; | |
582 | } | |
c1e83fb4 FD |
583 | /* If the offset is non-zero, write it.*/ |
584 | if (offset) { | |
585 | ret = config_writer_write_element_unsigned_int(writer, | |
586 | config_element_offset, offset); | |
587 | if (ret) { | |
588 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
589 | goto end; | |
590 | } | |
591 | } | |
592 | } else { | |
593 | /* | |
594 | * This really should not happen as we are either setting the | |
595 | * address or the symbol above. | |
596 | */ | |
597 | ERR("Invalid probe/function description."); | |
598 | ret = LTTNG_ERR_INVALID; | |
599 | goto end; | |
83712c39 FD |
600 | } |
601 | ||
c1e83fb4 FD |
602 | |
603 | ret = config_writer_close_element(writer); | |
604 | if (ret) { | |
605 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
606 | goto end; | |
607 | } | |
608 | end: | |
609 | return ret; | |
610 | } | |
611 | ||
612 | /* | |
613 | * Save the userspace probe tracepoint event associated with the event to the | |
614 | * config writer. | |
615 | */ | |
616 | static | |
617 | int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, | |
618 | struct ltt_kernel_event *event) | |
619 | { | |
620 | int ret = 0; | |
621 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
622 | const struct lttng_userspace_probe_location *userspace_probe_location; |
623 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
624 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
625 | ||
626 | /* Get userspace probe location from the event. */ | |
627 | userspace_probe_location = event->userspace_probe_location; | |
628 | if (!userspace_probe_location) { | |
629 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
630 | goto end; | |
631 | } | |
632 | ||
633 | /* Get lookup method and lookup method type. */ | |
634 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
635 | if (!lookup_method) { | |
636 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
637 | goto end; | |
638 | } | |
639 | ||
640 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
641 | ||
642 | /* Get the binary path, probe name and provider name. */ | |
643 | binary_path = | |
644 | lttng_userspace_probe_location_tracepoint_get_binary_path( | |
645 | userspace_probe_location); | |
646 | if (!binary_path) { | |
647 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
648 | goto end; | |
649 | } | |
650 | ||
651 | probe_name = | |
652 | lttng_userspace_probe_location_tracepoint_get_probe_name( | |
653 | userspace_probe_location); | |
654 | if (!probe_name) { | |
655 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
656 | goto end; | |
657 | } | |
658 | ||
659 | provider_name = | |
660 | lttng_userspace_probe_location_tracepoint_get_provider_name( | |
661 | userspace_probe_location); | |
662 | if (!provider_name) { | |
663 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
664 | goto end; | |
665 | } | |
666 | ||
667 | /* Open a userspace probe tracepoint attribute. */ | |
668 | ret = config_writer_open_element(writer, config_element_userspace_probe_tracepoint_attributes); | |
669 | if (ret) { | |
670 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
671 | goto end; | |
672 | } | |
673 | ||
674 | switch (lookup_type) { | |
675 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
676 | ret = config_writer_write_element_string(writer, | |
677 | config_element_userspace_probe_lookup, | |
678 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
679 | if (ret) { |
680 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
681 | goto end; | |
682 | } | |
c1e83fb4 FD |
683 | break; |
684 | default: | |
685 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
686 | ret = LTTNG_ERR_INVALID; | |
687 | goto end; | |
83712c39 FD |
688 | } |
689 | ||
c1e83fb4 FD |
690 | /* Write the binary path, provider name and the probe name. */ |
691 | ret = config_writer_write_element_string(writer, | |
692 | config_element_userspace_probe_location_binary_path, | |
693 | binary_path); | |
694 | if (ret) { | |
695 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
696 | goto end; | |
697 | } | |
698 | ||
699 | ret = config_writer_write_element_string(writer, | |
700 | config_element_userspace_probe_tracepoint_location_provider_name, | |
701 | provider_name); | |
702 | if (ret) { | |
703 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
704 | goto end; | |
705 | } | |
706 | ||
707 | ret = config_writer_write_element_string(writer, | |
708 | config_element_userspace_probe_tracepoint_location_probe_name, | |
709 | probe_name); | |
710 | if (ret) { | |
711 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
712 | goto end; | |
713 | } | |
714 | ||
715 | /* Close the userspace probe tracepoint attribute. */ | |
716 | ret = config_writer_close_element(writer); | |
717 | if (ret) { | |
718 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
719 | goto end; | |
720 | } | |
721 | ||
722 | end: | |
723 | return ret; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Save the userspace probe function event associated with the event to the | |
728 | * config writer. | |
729 | */ | |
730 | static | |
731 | int save_kernel_userspace_probe_function_event(struct config_writer *writer, | |
732 | struct ltt_kernel_event *event) | |
733 | { | |
734 | int ret = 0; | |
735 | const char *function_name, *binary_path; | |
87597c2c JG |
736 | const struct lttng_userspace_probe_location *userspace_probe_location; |
737 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
738 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
739 | ||
740 | /* Get userspace probe location from the event. */ | |
741 | userspace_probe_location = event->userspace_probe_location; | |
742 | if (!userspace_probe_location) { | |
743 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
744 | goto end; | |
745 | } | |
746 | ||
747 | /* Get lookup method and lookup method type. */ | |
748 | lookup_method = lttng_userspace_probe_location_get_lookup_method( | |
749 | userspace_probe_location); | |
750 | if (!lookup_method) { | |
751 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
752 | goto end; | |
753 | } | |
754 | ||
755 | /* Get the binary path and the function name. */ | |
756 | binary_path = | |
757 | lttng_userspace_probe_location_function_get_binary_path( | |
758 | userspace_probe_location); | |
759 | if (!binary_path) { | |
760 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
761 | goto end; | |
762 | } | |
763 | ||
764 | function_name = | |
765 | lttng_userspace_probe_location_function_get_function_name( | |
766 | userspace_probe_location); | |
767 | if (!function_name) { | |
768 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
769 | goto end; | |
770 | } | |
771 | ||
772 | /* Open a userspace probe function attribute. */ | |
773 | ret = config_writer_open_element(writer, | |
774 | config_element_userspace_probe_function_attributes); | |
775 | if (ret) { | |
776 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
777 | goto end; | |
778 | } | |
779 | ||
780 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
781 | switch (lookup_type) { | |
782 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
783 | ret = config_writer_write_element_string(writer, | |
784 | config_element_userspace_probe_lookup, | |
785 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
786 | if (ret) { |
787 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
788 | goto end; | |
789 | } | |
c1e83fb4 FD |
790 | break; |
791 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
792 | ret = config_writer_write_element_string(writer, | |
793 | config_element_userspace_probe_lookup, | |
794 | config_element_userspace_probe_lookup_function_default); | |
795 | if (ret) { | |
796 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
797 | goto end; | |
798 | } | |
799 | break; | |
800 | default: | |
801 | ERR("Unsupported kernel userspace probe function lookup method."); | |
802 | ret = LTTNG_ERR_INVALID; | |
803 | goto end; | |
83712c39 FD |
804 | } |
805 | ||
c1e83fb4 FD |
806 | /* Write the binary path and the function name. */ |
807 | ret = config_writer_write_element_string(writer, | |
808 | config_element_userspace_probe_location_binary_path, | |
809 | binary_path); | |
810 | if (ret) { | |
811 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
812 | goto end; | |
813 | } | |
814 | ||
815 | ret = config_writer_write_element_string(writer, | |
816 | config_element_userspace_probe_function_location_function_name, | |
817 | function_name); | |
818 | if (ret) { | |
819 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
820 | goto end; | |
821 | } | |
822 | ||
823 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
824 | ret = config_writer_close_element(writer); |
825 | if (ret) { | |
826 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
827 | goto end; | |
828 | } | |
c1e83fb4 | 829 | |
83712c39 FD |
830 | end: |
831 | return ret; | |
832 | } | |
c1e83fb4 FD |
833 | |
834 | static | |
835 | int save_kernel_userspace_probe_event(struct config_writer *writer, | |
836 | struct ltt_kernel_event *event) | |
837 | { | |
838 | int ret; | |
839 | struct lttng_userspace_probe_location *userspace_probe_location; | |
840 | ||
841 | /* Get userspace probe location from the event. */ | |
842 | userspace_probe_location = event->userspace_probe_location; | |
843 | if (!userspace_probe_location) { | |
844 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
845 | goto end; | |
846 | } | |
847 | ||
848 | switch(lttng_userspace_probe_location_get_type(userspace_probe_location)) { | |
849 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
850 | { | |
851 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
852 | if (ret) { | |
853 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
854 | goto end; | |
855 | } | |
856 | break; | |
857 | } | |
858 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
859 | { | |
860 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
861 | if (ret) { | |
862 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
863 | goto end; | |
864 | } | |
865 | break; | |
866 | } | |
867 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
868 | default: | |
869 | ERR("Unsupported kernel userspace probe location type."); | |
870 | ret = LTTNG_ERR_INVALID; | |
871 | goto end; | |
872 | } | |
873 | ||
874 | end: | |
875 | return ret; | |
876 | } | |
877 | ||
878 | static | |
fb198a11 | 879 | int save_kernel_event(struct config_writer *writer, |
83712c39 | 880 | struct ltt_kernel_event *event) |
fb198a11 JG |
881 | { |
882 | int ret; | |
883 | const char *instrumentation_type; | |
884 | ||
885 | ret = config_writer_open_element(writer, config_element_event); | |
886 | if (ret) { | |
887 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
888 | goto end; | |
889 | } | |
890 | ||
891 | if (event->event->name[0]) { | |
892 | ret = config_writer_write_element_string(writer, | |
893 | config_element_name, event->event->name); | |
894 | if (ret) { | |
895 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
896 | goto end; | |
897 | } | |
898 | } | |
899 | ||
900 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
901 | event->enabled); | |
902 | if (ret) { | |
903 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
904 | goto end; | |
905 | } | |
906 | ||
907 | instrumentation_type = get_kernel_instrumentation_string( | |
908 | event->event->instrumentation); | |
909 | if (!instrumentation_type) { | |
910 | ret = LTTNG_ERR_INVALID; | |
911 | goto end; | |
912 | } | |
913 | ||
914 | ret = config_writer_write_element_string(writer, config_element_type, | |
915 | instrumentation_type); | |
916 | if (ret) { | |
917 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
918 | goto end; | |
919 | } | |
920 | ||
911d1560 JG |
921 | if (event->filter_expression) { |
922 | ret = config_writer_write_element_string(writer, | |
923 | config_element_filter, | |
924 | event->filter_expression); | |
925 | if (ret) { | |
926 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
927 | goto end; | |
928 | } | |
929 | } | |
930 | ||
b8e2fb80 FD |
931 | if (event->event->instrumentation == LTTNG_KERNEL_ABI_FUNCTION || |
932 | event->event->instrumentation == LTTNG_KERNEL_ABI_KPROBE || | |
933 | event->event->instrumentation == LTTNG_KERNEL_ABI_UPROBE || | |
934 | event->event->instrumentation == LTTNG_KERNEL_ABI_KRETPROBE) { | |
fb198a11 JG |
935 | |
936 | ret = config_writer_open_element(writer, | |
937 | config_element_attributes); | |
938 | if (ret) { | |
939 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
940 | goto end; | |
941 | } | |
942 | ||
943 | switch (event->event->instrumentation) { | |
b8e2fb80 FD |
944 | case LTTNG_KERNEL_ABI_SYSCALL: |
945 | case LTTNG_KERNEL_ABI_FUNCTION: | |
83712c39 | 946 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 947 | if (ret) { |
fb198a11 JG |
948 | goto end; |
949 | } | |
950 | break; | |
b8e2fb80 FD |
951 | case LTTNG_KERNEL_ABI_KPROBE: |
952 | case LTTNG_KERNEL_ABI_KRETPROBE: | |
83712c39 | 953 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 954 | if (ret) { |
fb198a11 JG |
955 | goto end; |
956 | } | |
957 | break; | |
b8e2fb80 | 958 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
959 | ret = save_kernel_userspace_probe_event(writer, event); |
960 | if (ret) { | |
961 | goto end; | |
962 | } | |
963 | break; | |
fb198a11 JG |
964 | default: |
965 | ERR("Unsupported kernel instrumentation type."); | |
966 | ret = LTTNG_ERR_INVALID; | |
967 | goto end; | |
968 | } | |
969 | ||
970 | /* /attributes */ | |
971 | ret = config_writer_close_element(writer); | |
972 | if (ret) { | |
973 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
974 | goto end; | |
975 | } | |
976 | } | |
977 | ||
978 | /* /event */ | |
979 | ret = config_writer_close_element(writer); | |
980 | if (ret) { | |
981 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
982 | goto end; | |
983 | } | |
55c9e7ca JR |
984 | |
985 | ret = LTTNG_OK; | |
fb198a11 JG |
986 | end: |
987 | return ret; | |
988 | } | |
989 | ||
55c9e7ca | 990 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
991 | static |
992 | int save_kernel_events(struct config_writer *writer, | |
0de3eda1 | 993 | struct ltt_kernel_channel *kchan) |
fb198a11 JG |
994 | { |
995 | int ret; | |
996 | struct ltt_kernel_event *event; | |
997 | ||
998 | ret = config_writer_open_element(writer, config_element_events); | |
999 | if (ret) { | |
1000 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1001 | goto end; | |
1002 | } | |
1003 | ||
0de3eda1 | 1004 | cds_list_for_each_entry(event, &kchan->events_list.head, list) { |
fb198a11 | 1005 | ret = save_kernel_event(writer, event); |
55c9e7ca | 1006 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1007 | goto end; |
1008 | } | |
1009 | } | |
1010 | ||
1011 | /* /events */ | |
1012 | ret = config_writer_close_element(writer); | |
1013 | if (ret) { | |
1014 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1015 | goto end; | |
1016 | } | |
55c9e7ca JR |
1017 | |
1018 | ret = LTTNG_OK; | |
fb198a11 JG |
1019 | end: |
1020 | return ret; | |
1021 | } | |
1022 | ||
55c9e7ca | 1023 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1024 | static |
1025 | int save_ust_event(struct config_writer *writer, | |
1026 | struct ltt_ust_event *event) | |
1027 | { | |
1028 | int ret; | |
1029 | const char *loglevel_type_string; | |
1030 | ||
1031 | ret = config_writer_open_element(writer, config_element_event); | |
1032 | if (ret) { | |
1033 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1034 | goto end; | |
1035 | } | |
1036 | ||
1037 | if (event->attr.name[0]) { | |
1038 | ret = config_writer_write_element_string(writer, | |
1039 | config_element_name, event->attr.name); | |
1040 | if (ret) { | |
1041 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1042 | goto end; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1047 | event->enabled); | |
1048 | if (ret) { | |
1049 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1050 | goto end; | |
1051 | } | |
1052 | ||
fc4b93fa | 1053 | if (event->attr.instrumentation != LTTNG_UST_ABI_TRACEPOINT) { |
fb198a11 JG |
1054 | ERR("Unsupported UST instrumentation type."); |
1055 | ret = LTTNG_ERR_INVALID; | |
1056 | goto end; | |
1057 | } | |
1058 | ret = config_writer_write_element_string(writer, config_element_type, | |
1059 | config_event_type_tracepoint); | |
1060 | if (ret) { | |
1061 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1062 | goto end; | |
1063 | } | |
1064 | ||
1065 | loglevel_type_string = get_loglevel_type_string( | |
1066 | event->attr.loglevel_type); | |
1067 | if (!loglevel_type_string) { | |
1068 | ERR("Unsupported UST loglevel type."); | |
1069 | ret = LTTNG_ERR_INVALID; | |
1070 | goto end; | |
1071 | } | |
1072 | ||
1073 | ret = config_writer_write_element_string(writer, | |
1074 | config_element_loglevel_type, loglevel_type_string); | |
1075 | if (ret) { | |
1076 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1077 | goto end; | |
1078 | } | |
1079 | ||
1adbdb10 | 1080 | /* The log level is irrelevant if no "filtering" is enabled */ |
fc4b93fa | 1081 | if (event->attr.loglevel_type != LTTNG_UST_ABI_LOGLEVEL_ALL) { |
1adbdb10 JG |
1082 | ret = config_writer_write_element_signed_int(writer, |
1083 | config_element_loglevel, event->attr.loglevel); | |
1084 | if (ret) { | |
1085 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1086 | goto end; | |
1087 | } | |
fb198a11 JG |
1088 | } |
1089 | ||
1090 | if (event->filter_expression) { | |
1091 | ret = config_writer_write_element_string(writer, | |
1092 | config_element_filter, event->filter_expression); | |
1093 | if (ret) { | |
1094 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1095 | goto end; | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | if (event->exclusion && event->exclusion->count) { | |
1100 | uint32_t i; | |
1101 | ||
1102 | ret = config_writer_open_element(writer, | |
1103 | config_element_exclusions); | |
1104 | if (ret) { | |
1105 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1106 | goto end; | |
1107 | } | |
1108 | ||
1109 | for (i = 0; i < event->exclusion->count; i++) { | |
1110 | ret = config_writer_write_element_string(writer, | |
1111 | config_element_exclusion, | |
d7af3565 PP |
1112 | LTTNG_EVENT_EXCLUSION_NAME_AT( |
1113 | event->exclusion, i)); | |
fb198a11 JG |
1114 | if (ret) { |
1115 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1116 | goto end; | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | /* /exclusions */ | |
1121 | ret = config_writer_close_element(writer); | |
1122 | if (ret) { | |
1123 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1124 | goto end; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | /* /event */ | |
1129 | ret = config_writer_close_element(writer); | |
1130 | if (ret) { | |
1131 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1132 | goto end; | |
1133 | } | |
55c9e7ca JR |
1134 | |
1135 | ret = LTTNG_OK; | |
fb198a11 JG |
1136 | end: |
1137 | return ret; | |
1138 | } | |
1139 | ||
55c9e7ca | 1140 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1141 | static |
1142 | int save_ust_events(struct config_writer *writer, | |
1143 | struct lttng_ht *events) | |
1144 | { | |
1145 | int ret; | |
1146 | struct ltt_ust_event *event; | |
1147 | struct lttng_ht_node_str *node; | |
1148 | struct lttng_ht_iter iter; | |
1149 | ||
1150 | ret = config_writer_open_element(writer, config_element_events); | |
1151 | if (ret) { | |
1152 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1153 | goto end; | |
1154 | } | |
1155 | ||
1156 | rcu_read_lock(); | |
1157 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { | |
1158 | event = caa_container_of(node, struct ltt_ust_event, node); | |
1159 | ||
af325ba1 JG |
1160 | if (event->internal) { |
1161 | /* Internal events must not be exposed to clients */ | |
1162 | continue; | |
1163 | } | |
fb198a11 | 1164 | ret = save_ust_event(writer, event); |
55c9e7ca | 1165 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1166 | rcu_read_unlock(); |
1167 | goto end; | |
1168 | } | |
1169 | } | |
1170 | rcu_read_unlock(); | |
1171 | ||
1172 | /* /events */ | |
1173 | ret = config_writer_close_element(writer); | |
1174 | if (ret) { | |
1175 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1176 | goto end; | |
1177 | } | |
55c9e7ca JR |
1178 | |
1179 | ret = LTTNG_OK; | |
fb198a11 JG |
1180 | end: |
1181 | return ret; | |
1182 | } | |
1183 | ||
55c9e7ca | 1184 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 | 1185 | static |
0b35b846 | 1186 | int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
51755dc8 JG |
1187 | struct agent_event *agent_event) |
1188 | { | |
55c9e7ca | 1189 | int ret; |
fc4b93fa | 1190 | enum lttng_ust_abi_loglevel_type ust_loglevel_type; |
0b35b846 | 1191 | |
44760c20 | 1192 | ust_event->enabled = AGENT_EVENT_IS_ENABLED(agent_event); |
fc4b93fa | 1193 | ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
d333bdaa MD |
1194 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, |
1195 | LTTNG_SYMBOL_NAME_LEN)) { | |
55c9e7ca | 1196 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1197 | goto end; |
1198 | } | |
0b35b846 JG |
1199 | switch (agent_event->loglevel_type) { |
1200 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
fc4b93fa | 1201 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
0b35b846 JG |
1202 | break; |
1203 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 1204 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
0b35b846 JG |
1205 | break; |
1206 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
fc4b93fa | 1207 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
0b35b846 JG |
1208 | break; |
1209 | default: | |
1210 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1211 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1212 | goto end; |
1213 | } | |
1214 | ||
1215 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1216 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1217 | ust_event->filter_expression = agent_event->filter_expression; |
1218 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1219 | |
1220 | ret = LTTNG_OK; | |
0b35b846 JG |
1221 | end: |
1222 | return ret; | |
51755dc8 JG |
1223 | } |
1224 | ||
55c9e7ca | 1225 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
51755dc8 JG |
1226 | static |
1227 | int save_agent_events(struct config_writer *writer, | |
51755dc8 JG |
1228 | struct agent *agent) |
1229 | { | |
1230 | int ret; | |
1231 | struct lttng_ht_iter iter; | |
1232 | struct lttng_ht_node_str *node; | |
1233 | ||
1234 | ret = config_writer_open_element(writer, config_element_events); | |
1235 | if (ret) { | |
1236 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1237 | goto end; | |
1238 | } | |
1239 | ||
1240 | rcu_read_lock(); | |
1241 | cds_lfht_for_each_entry(agent->events->ht, &iter.iter, node, node) { | |
51755dc8 JG |
1242 | struct agent_event *agent_event; |
1243 | struct ltt_ust_event fake_event; | |
1244 | ||
1245 | memset(&fake_event, 0, sizeof(fake_event)); | |
1246 | agent_event = caa_container_of(node, struct agent_event, node); | |
1247 | ||
1248 | /* | |
1249 | * Initialize a fake ust event to reuse the same serialization | |
1250 | * function since UST and agent events contain the same info | |
1251 | * (and one could wonder why they don't reuse the same | |
1252 | * structures...). | |
1253 | */ | |
0b35b846 | 1254 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); |
55c9e7ca | 1255 | if (ret != LTTNG_OK) { |
0b35b846 JG |
1256 | rcu_read_unlock(); |
1257 | goto end; | |
1258 | } | |
51755dc8 | 1259 | ret = save_ust_event(writer, &fake_event); |
55c9e7ca | 1260 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1261 | rcu_read_unlock(); |
1262 | goto end; | |
1263 | } | |
1264 | } | |
1265 | rcu_read_unlock(); | |
1266 | ||
1267 | /* /events */ | |
1268 | ret = config_writer_close_element(writer); | |
1269 | if (ret) { | |
1270 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1271 | goto end; | |
1272 | } | |
55c9e7ca JR |
1273 | |
1274 | ret = LTTNG_OK; | |
51755dc8 JG |
1275 | end: |
1276 | return ret; | |
1277 | } | |
1278 | ||
55c9e7ca | 1279 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1280 | static |
1281 | int save_kernel_context(struct config_writer *writer, | |
b8e2fb80 | 1282 | struct lttng_kernel_abi_context *ctx) |
fb198a11 | 1283 | { |
55c9e7ca | 1284 | int ret = LTTNG_OK; |
fb198a11 JG |
1285 | |
1286 | if (!ctx) { | |
1287 | goto end; | |
1288 | } | |
1289 | ||
fb198a11 JG |
1290 | ret = config_writer_open_element(writer, config_element_context); |
1291 | if (ret) { | |
1292 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1293 | goto end; | |
1294 | } | |
1295 | ||
b8e2fb80 | 1296 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
045fc617 JG |
1297 | ret = config_writer_open_element(writer, |
1298 | config_element_context_perf); | |
fb198a11 JG |
1299 | if (ret) { |
1300 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1301 | goto end; | |
1302 | } | |
1303 | ||
1304 | ret = config_writer_write_element_unsigned_int(writer, | |
1305 | config_element_type, ctx->u.perf_counter.type); | |
1306 | if (ret) { | |
1307 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1308 | goto end; | |
1309 | } | |
1310 | ||
1311 | ret = config_writer_write_element_unsigned_int(writer, | |
1312 | config_element_config, ctx->u.perf_counter.config); | |
1313 | if (ret) { | |
1314 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1315 | goto end; | |
1316 | } | |
1317 | ||
1318 | ret = config_writer_write_element_string(writer, | |
1319 | config_element_name, ctx->u.perf_counter.name); | |
1320 | if (ret) { | |
1321 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1322 | goto end; | |
1323 | } | |
1324 | ||
1325 | /* /perf */ | |
1326 | ret = config_writer_close_element(writer); | |
1327 | if (ret) { | |
1328 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1329 | goto end; | |
1330 | } | |
1331 | } else { | |
1332 | const char *context_type_string = | |
1333 | get_kernel_context_type_string(ctx->ctx); | |
1334 | ||
1335 | if (!context_type_string) { | |
1336 | ERR("Unsupported kernel context type."); | |
1337 | ret = LTTNG_ERR_INVALID; | |
1338 | goto end; | |
1339 | } | |
1340 | ||
1341 | ret = config_writer_write_element_string(writer, | |
1342 | config_element_type, context_type_string); | |
1343 | if (ret) { | |
1344 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1345 | goto end; | |
1346 | } | |
1347 | } | |
1348 | ||
1349 | /* /context */ | |
1350 | ret = config_writer_close_element(writer); | |
1351 | if (ret) { | |
1352 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
55c9e7ca | 1356 | ret = LTTNG_OK; |
645328ae DG |
1357 | end: |
1358 | return ret; | |
1359 | } | |
1360 | ||
55c9e7ca | 1361 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
645328ae DG |
1362 | static |
1363 | int save_kernel_contexts(struct config_writer *writer, | |
1364 | struct ltt_kernel_channel *kchan) | |
1365 | { | |
1366 | int ret; | |
1367 | struct ltt_kernel_context *ctx; | |
1368 | ||
2aa64052 | 1369 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1370 | ret = LTTNG_OK; |
2aa64052 JG |
1371 | goto end; |
1372 | } | |
1373 | ||
645328ae DG |
1374 | ret = config_writer_open_element(writer, config_element_contexts); |
1375 | if (ret) { | |
1376 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1377 | goto end; | |
1378 | } | |
1379 | ||
1380 | cds_list_for_each_entry(ctx, &kchan->ctx_list, list) { | |
1381 | ret = save_kernel_context(writer, &ctx->ctx); | |
55c9e7ca | 1382 | if (ret != LTTNG_OK) { |
645328ae DG |
1383 | goto end; |
1384 | } | |
1385 | } | |
1386 | ||
fb198a11 JG |
1387 | /* /contexts */ |
1388 | ret = config_writer_close_element(writer); | |
1389 | if (ret) { | |
1390 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1391 | goto end; | |
1392 | } | |
55c9e7ca JR |
1393 | |
1394 | ret = LTTNG_OK; | |
fb198a11 JG |
1395 | end: |
1396 | return ret; | |
1397 | } | |
1398 | ||
55c9e7ca | 1399 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1400 | static |
1401 | int save_ust_context_perf_thread_counter(struct config_writer *writer, | |
1402 | struct ltt_ust_context *ctx) | |
1403 | { | |
1404 | int ret; | |
1405 | ||
a0377dfe FD |
1406 | LTTNG_ASSERT(writer); |
1407 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1408 | |
1409 | /* Perf contexts are saved as event_perf_context_type */ | |
1410 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1411 | if (ret) { | |
1412 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1413 | goto end; | |
1414 | } | |
1415 | ||
1416 | ret = config_writer_write_element_unsigned_int(writer, | |
1417 | config_element_type, ctx->ctx.u.perf_counter.type); | |
1418 | if (ret) { | |
1419 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1420 | goto end; | |
1421 | } | |
1422 | ||
1423 | ret = config_writer_write_element_unsigned_int(writer, | |
1424 | config_element_config, ctx->ctx.u.perf_counter.config); | |
1425 | if (ret) { | |
1426 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1427 | goto end; | |
1428 | } | |
1429 | ||
1430 | ret = config_writer_write_element_string(writer, config_element_name, | |
1431 | ctx->ctx.u.perf_counter.name); | |
1432 | if (ret) { | |
1433 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1434 | goto end; | |
1435 | } | |
1436 | ||
1437 | /* /perf */ | |
1438 | ret = config_writer_close_element(writer); | |
1439 | if (ret) { | |
1440 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1441 | goto end; | |
1442 | } | |
55c9e7ca JR |
1443 | |
1444 | ret = LTTNG_OK; | |
045fc617 JG |
1445 | end: |
1446 | return ret; | |
1447 | } | |
1448 | ||
55c9e7ca | 1449 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1450 | static |
1451 | int save_ust_context_app_ctx(struct config_writer *writer, | |
1452 | struct ltt_ust_context *ctx) | |
1453 | { | |
1454 | int ret; | |
1455 | ||
a0377dfe FD |
1456 | LTTNG_ASSERT(writer); |
1457 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1458 | |
1459 | /* Application contexts are saved as application_context_type */ | |
1460 | ret = config_writer_open_element(writer, config_element_context_app); | |
1461 | if (ret) { | |
1462 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1463 | goto end; | |
1464 | } | |
1465 | ||
1466 | ret = config_writer_write_element_string(writer, | |
1467 | config_element_context_app_provider_name, | |
1468 | ctx->ctx.u.app_ctx.provider_name); | |
1469 | if (ret) { | |
1470 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1471 | goto end; | |
1472 | } | |
1473 | ||
1474 | ret = config_writer_write_element_string(writer, | |
1475 | config_element_context_app_ctx_name, | |
1476 | ctx->ctx.u.app_ctx.ctx_name); | |
1477 | if (ret) { | |
1478 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1479 | goto end; | |
1480 | } | |
1481 | ||
1482 | /* /app */ | |
1483 | ret = config_writer_close_element(writer); | |
1484 | if (ret) { | |
1485 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1486 | goto end; | |
1487 | } | |
55c9e7ca JR |
1488 | |
1489 | ret = LTTNG_OK; | |
045fc617 JG |
1490 | end: |
1491 | return ret; | |
1492 | } | |
1493 | ||
55c9e7ca | 1494 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
045fc617 JG |
1495 | static |
1496 | int save_ust_context_generic(struct config_writer *writer, | |
1497 | struct ltt_ust_context *ctx) | |
1498 | { | |
1499 | int ret; | |
1500 | const char *context_type_string; | |
1501 | ||
a0377dfe FD |
1502 | LTTNG_ASSERT(writer); |
1503 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1504 | |
1505 | /* Save context as event_context_type_type */ | |
1506 | context_type_string = get_ust_context_type_string( | |
1507 | ctx->ctx.ctx); | |
1508 | if (!context_type_string) { | |
1509 | ERR("Unsupported UST context type."); | |
1510 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1511 | goto end; | |
1512 | } | |
1513 | ||
1514 | ret = config_writer_write_element_string(writer, | |
1515 | config_element_type, context_type_string); | |
1516 | if (ret) { | |
1517 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1518 | goto end; | |
1519 | } | |
55c9e7ca JR |
1520 | |
1521 | ret = LTTNG_OK; | |
045fc617 JG |
1522 | end: |
1523 | return ret; | |
1524 | } | |
1525 | ||
55c9e7ca | 1526 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1527 | static |
1528 | int save_ust_context(struct config_writer *writer, | |
1529 | struct cds_list_head *ctx_list) | |
1530 | { | |
1531 | int ret; | |
1532 | struct ltt_ust_context *ctx; | |
1533 | ||
a0377dfe FD |
1534 | LTTNG_ASSERT(writer); |
1535 | LTTNG_ASSERT(ctx_list); | |
fb198a11 JG |
1536 | |
1537 | ret = config_writer_open_element(writer, config_element_contexts); | |
1538 | if (ret) { | |
1539 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1540 | goto end; | |
1541 | } | |
1542 | ||
1543 | cds_list_for_each_entry(ctx, ctx_list, list) { | |
fb198a11 JG |
1544 | ret = config_writer_open_element(writer, |
1545 | config_element_context); | |
1546 | if (ret) { | |
1547 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1548 | goto end; | |
1549 | } | |
1550 | ||
045fc617 | 1551 | switch (ctx->ctx.ctx) { |
fc4b93fa | 1552 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
045fc617 JG |
1553 | ret = save_ust_context_perf_thread_counter(writer, ctx); |
1554 | break; | |
fc4b93fa | 1555 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
1556 | ret = save_ust_context_app_ctx(writer, ctx); |
1557 | break; | |
1558 | default: | |
1559 | /* Save generic context. */ | |
1560 | ret = save_ust_context_generic(writer, ctx); | |
1561 | } | |
55c9e7ca | 1562 | if (ret != LTTNG_OK) { |
045fc617 | 1563 | goto end; |
fb198a11 JG |
1564 | } |
1565 | ||
1566 | /* /context */ | |
1567 | ret = config_writer_close_element(writer); | |
1568 | if (ret) { | |
1569 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1570 | goto end; | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | /* /contexts */ | |
1575 | ret = config_writer_close_element(writer); | |
1576 | if (ret) { | |
1577 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1578 | goto end; | |
1579 | } | |
55c9e7ca JR |
1580 | |
1581 | ret = LTTNG_OK; | |
fb198a11 JG |
1582 | end: |
1583 | return ret; | |
1584 | } | |
1585 | ||
55c9e7ca | 1586 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1587 | static |
1588 | int save_kernel_channel(struct config_writer *writer, | |
1589 | struct ltt_kernel_channel *kchan) | |
1590 | { | |
1591 | int ret; | |
1592 | ||
a0377dfe FD |
1593 | LTTNG_ASSERT(writer); |
1594 | LTTNG_ASSERT(kchan); | |
fb198a11 JG |
1595 | |
1596 | ret = config_writer_open_element(writer, config_element_channel); | |
1597 | if (ret) { | |
1598 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1599 | goto end; | |
1600 | } | |
1601 | ||
1602 | ret = config_writer_write_element_string(writer, config_element_name, | |
1603 | kchan->channel->name); | |
1604 | if (ret) { | |
1605 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1606 | goto end; | |
1607 | } | |
1608 | ||
1609 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1610 | kchan->channel->enabled); | |
1611 | if (ret) { | |
1612 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1613 | goto end; | |
1614 | } | |
1615 | ||
1616 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1617 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1618 | goto end; |
1619 | } | |
1620 | ||
0de3eda1 | 1621 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1622 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1623 | goto end; |
1624 | } | |
1625 | ||
645328ae | 1626 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1627 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1628 | goto end; |
1629 | } | |
1630 | ||
1631 | /* /channel */ | |
1632 | ret = config_writer_close_element(writer); | |
1633 | if (ret) { | |
1634 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1635 | goto end; | |
1636 | } | |
55c9e7ca JR |
1637 | |
1638 | ret = LTTNG_OK; | |
fb198a11 JG |
1639 | end: |
1640 | return ret; | |
1641 | } | |
1642 | ||
55c9e7ca | 1643 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1644 | static |
1645 | int save_ust_channel(struct config_writer *writer, | |
1646 | struct ltt_ust_channel *ust_chan, | |
1647 | struct ltt_ust_session *session) | |
1648 | { | |
1649 | int ret; | |
1650 | ||
a0377dfe FD |
1651 | LTTNG_ASSERT(writer); |
1652 | LTTNG_ASSERT(ust_chan); | |
1653 | LTTNG_ASSERT(session); | |
fb198a11 JG |
1654 | |
1655 | ret = config_writer_open_element(writer, config_element_channel); | |
1656 | if (ret) { | |
1657 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1658 | goto end; | |
1659 | } | |
1660 | ||
1661 | ret = config_writer_write_element_string(writer, config_element_name, | |
1662 | ust_chan->name); | |
1663 | if (ret) { | |
1664 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1665 | goto end; | |
1666 | } | |
1667 | ||
1668 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
1669 | ust_chan->enabled); | |
1670 | if (ret) { | |
1671 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1672 | goto end; | |
1673 | } | |
1674 | ||
1675 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1676 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1677 | goto end; |
1678 | } | |
1679 | ||
1680 | ret = config_writer_write_element_unsigned_int(writer, | |
1681 | config_element_tracefile_size, ust_chan->tracefile_size); | |
1682 | if (ret) { | |
1683 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1684 | goto end; | |
1685 | } | |
1686 | ||
1687 | ret = config_writer_write_element_unsigned_int(writer, | |
1688 | config_element_tracefile_count, ust_chan->tracefile_count); | |
1689 | if (ret) { | |
1690 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1691 | goto end; | |
1692 | } | |
1693 | ||
1694 | ret = config_writer_write_element_unsigned_int(writer, | |
1695 | config_element_live_timer_interval, | |
1696 | session->live_timer_interval); | |
1697 | if (ret) { | |
1698 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1699 | goto end; | |
1700 | } | |
1701 | ||
51755dc8 JG |
1702 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1703 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1704 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1705 | goto end; |
1706 | } | |
1707 | } else { | |
1708 | struct agent *agent = NULL; | |
1709 | ||
1710 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1711 | if (!agent) { | |
1712 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1713 | ERR("Could not find agent associated to UST subdomain"); | |
1714 | goto end; | |
1715 | } | |
1716 | ||
1717 | /* | |
1718 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1719 | * or Python) don't have any non-internal events. We retrieve | |
1720 | * the "agent" events associated with this channel and serialize | |
1721 | * them. | |
1722 | */ | |
8cd0a98d | 1723 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1724 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1725 | goto end; |
1726 | } | |
fb198a11 JG |
1727 | } |
1728 | ||
1729 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1730 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1731 | goto end; |
1732 | } | |
1733 | ||
1734 | /* /channel */ | |
1735 | ret = config_writer_close_element(writer); | |
1736 | if (ret) { | |
1737 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1738 | goto end; | |
1739 | } | |
55c9e7ca JR |
1740 | |
1741 | ret = LTTNG_OK; | |
fb198a11 JG |
1742 | end: |
1743 | return ret; | |
1744 | } | |
1745 | ||
55c9e7ca | 1746 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
1747 | static |
1748 | int save_kernel_session(struct config_writer *writer, | |
1749 | struct ltt_session *session) | |
1750 | { | |
1751 | int ret; | |
1752 | struct ltt_kernel_channel *kchan; | |
1753 | ||
a0377dfe FD |
1754 | LTTNG_ASSERT(writer); |
1755 | LTTNG_ASSERT(session); | |
fb198a11 JG |
1756 | |
1757 | ret = config_writer_write_element_string(writer, config_element_type, | |
1758 | config_domain_type_kernel); | |
1759 | if (ret) { | |
1760 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1761 | goto end; | |
1762 | } | |
1763 | ||
1764 | ret = config_writer_write_element_string(writer, | |
1765 | config_element_buffer_type, config_buffer_type_global); | |
1766 | if (ret) { | |
1767 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1768 | goto end; | |
1769 | } | |
1770 | ||
1771 | ret = config_writer_open_element(writer, | |
1772 | config_element_channels); | |
1773 | if (ret) { | |
1774 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1775 | goto end; | |
1776 | } | |
1777 | ||
1778 | cds_list_for_each_entry(kchan, &session->kernel_session->channel_list.head, | |
1779 | list) { | |
1780 | ret = save_kernel_channel(writer, kchan); | |
55c9e7ca | 1781 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1782 | goto end; |
1783 | } | |
1784 | } | |
1785 | ||
1786 | /* /channels */ | |
1787 | ret = config_writer_close_element(writer); | |
1788 | if (ret) { | |
1789 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1790 | goto end; | |
1791 | } | |
55c9e7ca JR |
1792 | |
1793 | ret = LTTNG_OK; | |
fb198a11 JG |
1794 | end: |
1795 | return ret; | |
1796 | } | |
1797 | ||
1798 | static | |
51755dc8 JG |
1799 | const char *get_config_domain_str(enum lttng_domain_type domain) |
1800 | { | |
1801 | const char *str_dom; | |
1802 | ||
1803 | switch (domain) { | |
1804 | case LTTNG_DOMAIN_KERNEL: | |
1805 | str_dom = config_domain_type_kernel; | |
1806 | break; | |
1807 | case LTTNG_DOMAIN_UST: | |
1808 | str_dom = config_domain_type_ust; | |
1809 | break; | |
1810 | case LTTNG_DOMAIN_JUL: | |
1811 | str_dom = config_domain_type_jul; | |
1812 | break; | |
1813 | case LTTNG_DOMAIN_LOG4J: | |
1814 | str_dom = config_domain_type_log4j; | |
1815 | break; | |
1816 | case LTTNG_DOMAIN_PYTHON: | |
1817 | str_dom = config_domain_type_python; | |
1818 | break; | |
1819 | default: | |
a0377dfe | 1820 | abort(); |
51755dc8 JG |
1821 | } |
1822 | ||
1823 | return str_dom; | |
1824 | } | |
1825 | ||
55c9e7ca | 1826 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 1827 | static int save_process_attr_tracker(struct config_writer *writer, |
55c9e7ca JR |
1828 | struct ltt_session *sess, |
1829 | int domain, | |
159b042f | 1830 | enum lttng_process_attr process_attr) |
e8fcabef | 1831 | { |
55c9e7ca | 1832 | int ret = LTTNG_OK; |
55c9e7ca | 1833 | const char *element_id_tracker, *element_target_id, *element_id; |
159b042f JG |
1834 | const struct process_attr_tracker *tracker; |
1835 | enum lttng_tracking_policy tracking_policy; | |
1836 | struct lttng_process_attr_values *values = NULL; | |
1837 | ||
1838 | switch (process_attr) { | |
1839 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1840 | element_id_tracker = config_element_process_attr_tracker_pid; | |
1841 | element_target_id = config_element_process_attr_pid_value; | |
1842 | element_id = config_element_process_attr_id; | |
1843 | break; | |
1844 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1845 | element_id_tracker = config_element_process_attr_tracker_vpid; | |
1846 | element_target_id = config_element_process_attr_vpid_value; | |
1847 | element_id = config_element_process_attr_id; | |
1848 | break; | |
1849 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1850 | element_id_tracker = config_element_process_attr_tracker_uid; | |
1851 | element_target_id = config_element_process_attr_uid_value; | |
1852 | element_id = config_element_process_attr_id; | |
1853 | break; | |
1854 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1855 | element_id_tracker = config_element_process_attr_tracker_vuid; | |
1856 | element_target_id = config_element_process_attr_vuid_value; | |
1857 | element_id = config_element_process_attr_id; | |
1858 | break; | |
1859 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1860 | element_id_tracker = config_element_process_attr_tracker_gid; | |
1861 | element_target_id = config_element_process_attr_gid_value; | |
1862 | element_id = config_element_process_attr_id; | |
1863 | break; | |
1864 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1865 | element_id_tracker = config_element_process_attr_tracker_vgid; | |
1866 | element_target_id = config_element_process_attr_vgid_value; | |
1867 | element_id = config_element_process_attr_id; | |
55c9e7ca JR |
1868 | break; |
1869 | default: | |
1870 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1871 | goto end; | |
1872 | } | |
e8fcabef JG |
1873 | |
1874 | switch (domain) { | |
1875 | case LTTNG_DOMAIN_KERNEL: | |
1876 | { | |
159b042f JG |
1877 | tracker = kernel_get_process_attr_tracker( |
1878 | sess->kernel_session, process_attr); | |
a0377dfe | 1879 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1880 | break; |
1881 | } | |
1882 | case LTTNG_DOMAIN_UST: | |
1883 | { | |
159b042f JG |
1884 | tracker = trace_ust_get_process_attr_tracker( |
1885 | sess->ust_session, process_attr); | |
a0377dfe | 1886 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1887 | break; |
1888 | } | |
1889 | case LTTNG_DOMAIN_JUL: | |
1890 | case LTTNG_DOMAIN_LOG4J: | |
1891 | case LTTNG_DOMAIN_PYTHON: | |
1892 | default: | |
159b042f | 1893 | ret = LTTNG_ERR_UNSUPPORTED_DOMAIN; |
e8fcabef JG |
1894 | goto end; |
1895 | } | |
1896 | ||
159b042f JG |
1897 | tracking_policy = process_attr_tracker_get_tracking_policy(tracker); |
1898 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_ALL) { | |
1899 | /* Tracking all, nothing to output. */ | |
1900 | ret = LTTNG_OK; | |
e283e4a0 JR |
1901 | goto end; |
1902 | } | |
a7a533cd | 1903 | |
55c9e7ca JR |
1904 | ret = config_writer_open_element(writer, element_id_tracker); |
1905 | if (ret) { | |
1906 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1907 | goto end; | |
1908 | } | |
1909 | ||
159b042f JG |
1910 | ret = config_writer_open_element( |
1911 | writer, config_element_process_attr_values); | |
55c9e7ca JR |
1912 | if (ret) { |
1913 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1914 | goto end; | |
1915 | } | |
1916 | ||
88ac6301 | 1917 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_SET) { |
159b042f JG |
1918 | unsigned int i, count; |
1919 | enum process_attr_tracker_status status = | |
1920 | process_attr_tracker_get_inclusion_set( | |
1921 | tracker, &values); | |
1922 | ||
1923 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1924 | ret = LTTNG_ERR_NOMEM; | |
1925 | goto end; | |
1926 | } | |
1927 | ||
1928 | count = _lttng_process_attr_values_get_count(values); | |
1929 | ||
1930 | for (i = 0; i < count; i++) { | |
1931 | unsigned int integral_value = UINT_MAX; | |
1932 | const char *name = NULL; | |
1933 | const struct process_attr_value *value = | |
1934 | lttng_process_attr_tracker_values_get_at_index( | |
1935 | values, i); | |
1936 | ||
a0377dfe | 1937 | LTTNG_ASSERT(value); |
159b042f JG |
1938 | ret = config_writer_open_element( |
1939 | writer, element_target_id); | |
1940 | if (ret) { | |
a7a533cd JR |
1941 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1942 | goto end; | |
1943 | } | |
159b042f JG |
1944 | |
1945 | switch (value->type) { | |
1946 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_PID: | |
1947 | integral_value = | |
1948 | (unsigned int) value->value.pid; | |
55c9e7ca | 1949 | break; |
159b042f JG |
1950 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_UID: |
1951 | integral_value = | |
1952 | (unsigned int) value->value.uid; | |
1953 | break; | |
1954 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GID: | |
1955 | integral_value = | |
1956 | (unsigned int) value->value.gid; | |
1957 | break; | |
1958 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME: | |
1959 | name = value->value.user_name; | |
a0377dfe | 1960 | LTTNG_ASSERT(name); |
159b042f JG |
1961 | break; |
1962 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME: | |
1963 | name = value->value.group_name; | |
a0377dfe | 1964 | LTTNG_ASSERT(name); |
55c9e7ca JR |
1965 | break; |
1966 | default: | |
159b042f | 1967 | abort(); |
e8fcabef | 1968 | } |
159b042f JG |
1969 | |
1970 | if (name) { | |
1971 | ret = config_writer_write_element_string(writer, | |
1972 | config_element_name, name); | |
1973 | } else { | |
1974 | ret = config_writer_write_element_unsigned_int( | |
1975 | writer, element_id, | |
1976 | integral_value); | |
e8fcabef | 1977 | } |
159b042f JG |
1978 | |
1979 | if (ret) { | |
2d97a006 JR |
1980 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1981 | goto end; | |
1982 | } | |
e8fcabef | 1983 | |
55c9e7ca | 1984 | /* /$element_target_id */ |
e8fcabef JG |
1985 | ret = config_writer_close_element(writer); |
1986 | if (ret) { | |
1987 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1988 | goto end; | |
1989 | } | |
1990 | } | |
55c9e7ca | 1991 | } |
e8fcabef | 1992 | |
88ac6301 | 1993 | /* /values */ |
55c9e7ca JR |
1994 | ret = config_writer_close_element(writer); |
1995 | if (ret) { | |
1996 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1997 | goto end; | |
1998 | } | |
e8fcabef | 1999 | |
55c9e7ca JR |
2000 | /* /$element_id_tracker */ |
2001 | ret = config_writer_close_element(writer); | |
2002 | if (ret) { | |
2003 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2004 | goto end; | |
e8fcabef | 2005 | } |
55c9e7ca JR |
2006 | |
2007 | ret = LTTNG_OK; | |
e8fcabef | 2008 | end: |
159b042f | 2009 | lttng_process_attr_values_destroy(values); |
e8fcabef JG |
2010 | return ret; |
2011 | } | |
2012 | ||
55c9e7ca | 2013 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 2014 | static int save_process_attr_trackers(struct config_writer *writer, |
55c9e7ca JR |
2015 | struct ltt_session *sess, |
2016 | int domain) | |
2017 | { | |
2018 | int ret; | |
2019 | ||
2020 | switch (domain) { | |
2021 | case LTTNG_DOMAIN_KERNEL: | |
159b042f JG |
2022 | ret = save_process_attr_tracker(writer, sess, domain, |
2023 | LTTNG_PROCESS_ATTR_PROCESS_ID); | |
2024 | if (ret != LTTNG_OK) { | |
2025 | goto end; | |
2026 | } | |
2027 | ret = save_process_attr_tracker(writer, sess, domain, | |
2028 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
2029 | if (ret != LTTNG_OK) { | |
2030 | goto end; | |
2031 | } | |
2032 | ret = save_process_attr_tracker(writer, sess, domain, | |
2033 | LTTNG_PROCESS_ATTR_USER_ID); | |
2034 | if (ret != LTTNG_OK) { | |
2035 | goto end; | |
2036 | } | |
2037 | ret = save_process_attr_tracker(writer, sess, domain, | |
2038 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
2039 | if (ret != LTTNG_OK) { | |
2040 | goto end; | |
2041 | } | |
2042 | ret = save_process_attr_tracker(writer, sess, domain, | |
2043 | LTTNG_PROCESS_ATTR_GROUP_ID); | |
2044 | if (ret != LTTNG_OK) { | |
2045 | goto end; | |
2046 | } | |
2047 | ret = save_process_attr_tracker(writer, sess, domain, | |
2048 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
2049 | if (ret != LTTNG_OK) { | |
2050 | goto end; | |
2051 | } | |
55c9e7ca JR |
2052 | break; |
2053 | case LTTNG_DOMAIN_UST: | |
159b042f JG |
2054 | ret = save_process_attr_tracker(writer, sess, domain, |
2055 | LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
2056 | if (ret != LTTNG_OK) { | |
2057 | goto end; | |
2058 | } | |
2059 | ret = save_process_attr_tracker(writer, sess, domain, | |
2060 | LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
2061 | if (ret != LTTNG_OK) { | |
2062 | goto end; | |
2063 | } | |
2064 | ret = save_process_attr_tracker(writer, sess, domain, | |
2065 | LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
2066 | if (ret != LTTNG_OK) { | |
2067 | goto end; | |
2068 | } | |
55c9e7ca JR |
2069 | break; |
2070 | default: | |
159b042f | 2071 | ret = LTTNG_ERR_INVALID; |
74675e31 | 2072 | goto end; |
55c9e7ca | 2073 | } |
159b042f JG |
2074 | ret = LTTNG_OK; |
2075 | end: | |
2076 | return ret; | |
55c9e7ca JR |
2077 | } |
2078 | ||
2079 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
51755dc8 JG |
2080 | static |
2081 | int save_ust_domain(struct config_writer *writer, | |
2082 | struct ltt_session *session, enum lttng_domain_type domain) | |
fb198a11 JG |
2083 | { |
2084 | int ret; | |
2085 | struct ltt_ust_channel *ust_chan; | |
2086 | const char *buffer_type_string; | |
2087 | struct lttng_ht_node_str *node; | |
2088 | struct lttng_ht_iter iter; | |
51755dc8 | 2089 | const char *config_domain_name; |
fb198a11 | 2090 | |
a0377dfe FD |
2091 | LTTNG_ASSERT(writer); |
2092 | LTTNG_ASSERT(session); | |
fb198a11 | 2093 | |
51755dc8 JG |
2094 | ret = config_writer_open_element(writer, |
2095 | config_element_domain); | |
2096 | if (ret) { | |
2097 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2098 | goto end; | |
2099 | } | |
2100 | ||
2101 | config_domain_name = get_config_domain_str(domain); | |
2102 | if (!config_domain_name) { | |
2103 | ret = LTTNG_ERR_INVALID; | |
2104 | goto end; | |
2105 | } | |
2106 | ||
2107 | ret = config_writer_write_element_string(writer, | |
2108 | config_element_type, config_domain_name); | |
fb198a11 JG |
2109 | if (ret) { |
2110 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2111 | goto end; | |
2112 | } | |
2113 | ||
2114 | buffer_type_string = get_buffer_type_string( | |
2115 | session->ust_session->buffer_type); | |
2116 | if (!buffer_type_string) { | |
2117 | ERR("Unsupported buffer type."); | |
2118 | ret = LTTNG_ERR_INVALID; | |
2119 | goto end; | |
2120 | } | |
2121 | ||
2122 | ret = config_writer_write_element_string(writer, | |
2123 | config_element_buffer_type, buffer_type_string); | |
2124 | if (ret) { | |
2125 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2126 | goto end; | |
2127 | } | |
2128 | ||
2129 | ret = config_writer_open_element(writer, config_element_channels); | |
2130 | if (ret) { | |
2131 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2132 | goto end; | |
2133 | } | |
2134 | ||
2135 | rcu_read_lock(); | |
2136 | cds_lfht_for_each_entry(session->ust_session->domain_global.channels->ht, | |
2137 | &iter.iter, node, node) { | |
fb198a11 | 2138 | ust_chan = caa_container_of(node, struct ltt_ust_channel, node); |
51755dc8 | 2139 | if (domain == ust_chan->domain) { |
fb198a11 | 2140 | ret = save_ust_channel(writer, ust_chan, session->ust_session); |
55c9e7ca | 2141 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2142 | rcu_read_unlock(); |
2143 | goto end; | |
2144 | } | |
2145 | } | |
2146 | } | |
2147 | rcu_read_unlock(); | |
2148 | ||
2149 | /* /channels */ | |
2150 | ret = config_writer_close_element(writer); | |
2151 | if (ret) { | |
2152 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2153 | goto end; | |
2154 | } | |
51755dc8 | 2155 | |
e8fcabef | 2156 | if (domain == LTTNG_DOMAIN_UST) { |
159b042f JG |
2157 | ret = config_writer_open_element( |
2158 | writer, config_element_process_attr_trackers); | |
847a5916 JR |
2159 | if (ret) { |
2160 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2161 | goto end; | |
2162 | } | |
2163 | ||
159b042f JG |
2164 | ret = save_process_attr_trackers( |
2165 | writer, session, LTTNG_DOMAIN_UST); | |
55c9e7ca | 2166 | if (ret != LTTNG_OK) { |
847a5916 JR |
2167 | goto end; |
2168 | } | |
2169 | ||
e8fcabef | 2170 | /* /trackers */ |
847a5916 JR |
2171 | ret = config_writer_close_element(writer); |
2172 | if (ret) { | |
55c9e7ca | 2173 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2174 | goto end; |
2175 | } | |
e8fcabef | 2176 | } |
847a5916 | 2177 | |
e8fcabef JG |
2178 | /* /domain */ |
2179 | ret = config_writer_close_element(writer); | |
2180 | if (ret) { | |
2181 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2182 | goto end; | |
847a5916 | 2183 | } |
e8fcabef | 2184 | |
55c9e7ca | 2185 | ret = LTTNG_OK; |
847a5916 | 2186 | end: |
847a5916 JR |
2187 | return ret; |
2188 | } | |
2189 | ||
55c9e7ca | 2190 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2191 | static |
2192 | int save_domains(struct config_writer *writer, struct ltt_session *session) | |
2193 | { | |
55c9e7ca | 2194 | int ret = LTTNG_OK; |
fb198a11 | 2195 | |
a0377dfe FD |
2196 | LTTNG_ASSERT(writer); |
2197 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2198 | |
2199 | if (!session->kernel_session && !session->ust_session) { | |
2200 | goto end; | |
2201 | } | |
2202 | ||
2203 | ret = config_writer_open_element(writer, config_element_domains); | |
2204 | if (ret) { | |
2205 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
fb198a11 JG |
2209 | if (session->kernel_session) { |
2210 | ret = config_writer_open_element(writer, | |
2211 | config_element_domain); | |
2212 | if (ret) { | |
2213 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2214 | goto end; | |
2215 | } | |
2216 | ||
2217 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2218 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2219 | goto end; |
2220 | } | |
2221 | ||
159b042f JG |
2222 | ret = config_writer_open_element( |
2223 | writer, config_element_process_attr_trackers); | |
847a5916 JR |
2224 | if (ret) { |
2225 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2226 | goto end; | |
2227 | } | |
2228 | ||
159b042f JG |
2229 | ret = save_process_attr_trackers( |
2230 | writer, session, LTTNG_DOMAIN_KERNEL); | |
55c9e7ca | 2231 | if (ret != LTTNG_OK) { |
847a5916 JR |
2232 | goto end; |
2233 | } | |
2234 | ||
2235 | /* /trackers */ | |
2236 | ret = config_writer_close_element(writer); | |
2237 | if (ret) { | |
2238 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2239 | goto end; | |
2240 | } | |
fb198a11 JG |
2241 | /* /domain */ |
2242 | ret = config_writer_close_element(writer); | |
2243 | if (ret) { | |
2244 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2245 | goto end; | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | if (session->ust_session) { | |
51755dc8 | 2250 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2251 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2252 | goto end; |
2253 | } | |
2254 | ||
51755dc8 | 2255 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2256 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2257 | goto end; |
2258 | } | |
fb198a11 | 2259 | |
51755dc8 | 2260 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2261 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2262 | goto end; |
2263 | } | |
65d72c41 | 2264 | |
51755dc8 | 2265 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2266 | if (ret != LTTNG_OK) { |
51755dc8 | 2267 | goto end; |
fb198a11 JG |
2268 | } |
2269 | } | |
2270 | ||
2271 | /* /domains */ | |
2272 | ret = config_writer_close_element(writer); | |
2273 | if (ret) { | |
2274 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2275 | goto end; | |
2276 | } | |
55c9e7ca JR |
2277 | |
2278 | ret = LTTNG_OK; | |
fb198a11 JG |
2279 | end: |
2280 | return ret; | |
2281 | } | |
2282 | ||
55c9e7ca | 2283 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2284 | static |
2285 | int save_consumer_output(struct config_writer *writer, | |
2286 | struct consumer_output *output) | |
2287 | { | |
2288 | int ret; | |
2289 | ||
a0377dfe FD |
2290 | LTTNG_ASSERT(writer); |
2291 | LTTNG_ASSERT(output); | |
fb198a11 JG |
2292 | |
2293 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2294 | if (ret) { | |
2295 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2296 | goto end; | |
2297 | } | |
2298 | ||
2299 | ret = config_writer_write_element_bool(writer, config_element_enabled, | |
2300 | output->enabled); | |
2301 | if (ret) { | |
2302 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2303 | goto end; | |
2304 | } | |
2305 | ||
2306 | ret = config_writer_open_element(writer, config_element_destination); | |
2307 | if (ret) { | |
2308 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2309 | goto end; | |
2310 | } | |
2311 | ||
2312 | switch (output->type) { | |
2313 | case CONSUMER_DST_LOCAL: | |
2314 | ret = config_writer_write_element_string(writer, | |
366a9222 | 2315 | config_element_path, output->dst.session_root_path); |
fb198a11 JG |
2316 | if (ret) { |
2317 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2318 | goto end; | |
2319 | } | |
2320 | break; | |
2321 | case CONSUMER_DST_NET: | |
2322 | { | |
2323 | char *uri; | |
2324 | ||
2325 | uri = zmalloc(PATH_MAX); | |
2326 | if (!uri) { | |
2327 | ret = LTTNG_ERR_NOMEM; | |
2328 | goto end; | |
2329 | } | |
2330 | ||
2331 | ret = config_writer_open_element(writer, config_element_net_output); | |
2332 | if (ret) { | |
2333 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2334 | goto end_net_output; | |
2335 | } | |
2336 | ||
2337 | if (output->dst.net.control_isset && | |
2338 | output->dst.net.data_isset) { | |
2339 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); | |
2340 | if (ret < 0) { | |
2341 | ret = LTTNG_ERR_INVALID; | |
2342 | goto end_net_output; | |
2343 | } | |
2344 | ||
2345 | ret = config_writer_write_element_string(writer, | |
2346 | config_element_control_uri, uri); | |
2347 | if (ret) { | |
2348 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2349 | goto end_net_output; | |
2350 | } | |
2351 | ||
2352 | ret = uri_to_str_url(&output->dst.net.data, uri, PATH_MAX); | |
2353 | if (ret < 0) { | |
2354 | ret = LTTNG_ERR_INVALID; | |
2355 | goto end_net_output; | |
2356 | } | |
2357 | ||
2358 | ret = config_writer_write_element_string(writer, | |
2359 | config_element_data_uri, uri); | |
2360 | if (ret) { | |
2361 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2362 | goto end_net_output; | |
2363 | } | |
55c9e7ca | 2364 | ret = LTTNG_OK; |
fb198a11 JG |
2365 | end_net_output: |
2366 | free(uri); | |
55c9e7ca | 2367 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2368 | goto end; |
2369 | } | |
2370 | } else { | |
2371 | ret = !output->dst.net.control_isset ? | |
2372 | LTTNG_ERR_URL_CTRL_MISS : | |
2373 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2374 | free(uri); |
fb198a11 JG |
2375 | goto end; |
2376 | } | |
2377 | ||
2378 | ret = config_writer_close_element(writer); | |
2379 | if (ret) { | |
2380 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2381 | goto end; | |
2382 | } | |
2383 | break; | |
2384 | } | |
2385 | default: | |
2386 | ERR("Unsupported consumer output type."); | |
2387 | ret = LTTNG_ERR_INVALID; | |
2388 | goto end; | |
2389 | } | |
2390 | ||
2391 | /* /destination */ | |
2392 | ret = config_writer_close_element(writer); | |
2393 | if (ret) { | |
2394 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2395 | goto end; | |
2396 | } | |
2397 | ||
2398 | /* /consumer_output */ | |
2399 | ret = config_writer_close_element(writer); | |
2400 | if (ret) { | |
2401 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2402 | goto end; | |
2403 | } | |
55c9e7ca JR |
2404 | |
2405 | ret = LTTNG_OK; | |
fb198a11 JG |
2406 | end: |
2407 | return ret; | |
2408 | } | |
2409 | ||
55c9e7ca | 2410 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2411 | static |
2412 | int save_snapshot_outputs(struct config_writer *writer, | |
2413 | struct snapshot *snapshot) | |
2414 | { | |
2415 | int ret; | |
2416 | struct lttng_ht_iter iter; | |
2417 | struct snapshot_output *output; | |
2418 | ||
a0377dfe FD |
2419 | LTTNG_ASSERT(writer); |
2420 | LTTNG_ASSERT(snapshot); | |
fb198a11 JG |
2421 | |
2422 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2423 | if (ret) { | |
2424 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2425 | goto end; | |
2426 | } | |
2427 | ||
2428 | rcu_read_lock(); | |
2429 | cds_lfht_for_each_entry(snapshot->output_ht->ht, &iter.iter, output, | |
2430 | node.node) { | |
2431 | ret = config_writer_open_element(writer, | |
2432 | config_element_output); | |
2433 | if (ret) { | |
2434 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2435 | goto end_unlock; | |
2436 | } | |
2437 | ||
2438 | ret = config_writer_write_element_string(writer, | |
2439 | config_element_name, output->name); | |
2440 | if (ret) { | |
2441 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2442 | goto end_unlock; | |
2443 | } | |
2444 | ||
2445 | ret = config_writer_write_element_unsigned_int(writer, | |
2446 | config_element_max_size, output->max_size); | |
2447 | if (ret) { | |
2448 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2449 | goto end_unlock; | |
2450 | } | |
2451 | ||
2452 | ret = save_consumer_output(writer, output->consumer); | |
55c9e7ca | 2453 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2454 | goto end_unlock; |
2455 | } | |
2456 | ||
2457 | /* /output */ | |
2458 | ret = config_writer_close_element(writer); | |
2459 | if (ret) { | |
2460 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2461 | goto end_unlock; | |
2462 | } | |
2463 | } | |
2464 | rcu_read_unlock(); | |
2465 | ||
2466 | /* /snapshot_outputs */ | |
2467 | ret = config_writer_close_element(writer); | |
2468 | if (ret) { | |
2469 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2470 | goto end; | |
2471 | } | |
2472 | ||
55c9e7ca | 2473 | ret = LTTNG_OK; |
fb198a11 JG |
2474 | end: |
2475 | return ret; | |
2476 | end_unlock: | |
2477 | rcu_read_unlock(); | |
2478 | return ret; | |
2479 | } | |
2480 | ||
55c9e7ca | 2481 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
fb198a11 JG |
2482 | static |
2483 | int save_session_output(struct config_writer *writer, | |
2484 | struct ltt_session *session) | |
2485 | { | |
2486 | int ret; | |
2487 | ||
a0377dfe FD |
2488 | LTTNG_ASSERT(writer); |
2489 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2490 | |
2491 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
2492 | (!session->snapshot_mode && !session->consumer)) { | |
2493 | /* Session is in no output mode */ | |
55c9e7ca | 2494 | ret = LTTNG_OK; |
fb198a11 JG |
2495 | goto end; |
2496 | } | |
2497 | ||
2498 | ret = config_writer_open_element(writer, config_element_output); | |
2499 | if (ret) { | |
2500 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2501 | goto end; | |
2502 | } | |
2503 | ||
2504 | if (session->snapshot_mode) { | |
2505 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2506 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2507 | goto end; |
2508 | } | |
2509 | } else { | |
2510 | if (session->consumer) { | |
2511 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2512 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2513 | goto end; |
2514 | } | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | /* /output */ | |
2519 | ret = config_writer_close_element(writer); | |
2520 | if (ret) { | |
2521 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2522 | goto end; | |
2523 | } | |
55c9e7ca | 2524 | ret = LTTNG_OK; |
fb198a11 JG |
2525 | end: |
2526 | return ret; | |
2527 | } | |
2528 | ||
ce6176f2 JG |
2529 | static |
2530 | int save_session_rotation_schedule(struct config_writer *writer, | |
2531 | enum lttng_rotation_schedule_type type, uint64_t value) | |
2532 | { | |
2533 | int ret = 0; | |
2534 | const char *element_name; | |
2535 | const char *value_name; | |
2536 | ||
2537 | switch (type) { | |
2538 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2539 | element_name = config_element_rotation_schedule_periodic; | |
2540 | value_name = config_element_rotation_schedule_periodic_time_us; | |
2541 | break; | |
2542 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2543 | element_name = config_element_rotation_schedule_size_threshold; | |
2544 | value_name = config_element_rotation_schedule_size_threshold_bytes; | |
2545 | break; | |
2546 | default: | |
2547 | ret = -1; | |
2548 | goto end; | |
2549 | } | |
2550 | ||
2551 | ret = config_writer_open_element(writer, element_name); | |
2552 | if (ret) { | |
2553 | goto end; | |
2554 | } | |
2555 | ||
2556 | ret = config_writer_write_element_unsigned_int(writer, | |
2557 | value_name, value); | |
2558 | if (ret) { | |
2559 | goto end; | |
2560 | } | |
2561 | ||
2562 | /* Close schedule descriptor element. */ | |
2563 | ret = config_writer_close_element(writer); | |
2564 | if (ret) { | |
2565 | goto end; | |
2566 | } | |
2567 | end: | |
2568 | return ret; | |
2569 | } | |
2570 | ||
2571 | static | |
2572 | int save_session_rotation_schedules(struct config_writer *writer, | |
2573 | struct ltt_session *session) | |
2574 | { | |
2575 | int ret; | |
2576 | ||
2577 | ret = config_writer_open_element(writer, | |
2578 | config_element_rotation_schedules); | |
f829d17a JG |
2579 | if (ret) { |
2580 | goto end; | |
2581 | } | |
ce6176f2 JG |
2582 | if (session->rotate_timer_period) { |
2583 | ret = save_session_rotation_schedule(writer, | |
2584 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, | |
2585 | session->rotate_timer_period); | |
2586 | if (ret) { | |
2587 | goto close_schedules; | |
2588 | } | |
2589 | } | |
2590 | if (session->rotate_size) { | |
2591 | ret = save_session_rotation_schedule(writer, | |
2592 | LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, | |
2593 | session->rotate_size); | |
2594 | if (ret) { | |
2595 | goto close_schedules; | |
2596 | } | |
2597 | } | |
2598 | ||
2599 | close_schedules: | |
2600 | /* Close rotation schedules element. */ | |
2601 | ret = config_writer_close_element(writer); | |
2602 | if (ret) { | |
2603 | goto end; | |
2604 | } | |
2605 | end: | |
2606 | return ret; | |
2607 | } | |
2608 | ||
fb198a11 JG |
2609 | /* |
2610 | * Save the given session. | |
2611 | * | |
55c9e7ca | 2612 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 JG |
2613 | */ |
2614 | static | |
2615 | int save_session(struct ltt_session *session, | |
2616 | struct lttng_save_session_attr *attr, lttng_sock_cred *creds) | |
2617 | { | |
b45f9ad2 | 2618 | int ret, fd = -1; |
511653c3 | 2619 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 JG |
2620 | size_t len; |
2621 | struct config_writer *writer = NULL; | |
2622 | size_t session_name_len; | |
2623 | const char *provided_path; | |
f376ad9c | 2624 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 | 2625 | |
a0377dfe FD |
2626 | LTTNG_ASSERT(session); |
2627 | LTTNG_ASSERT(attr); | |
2628 | LTTNG_ASSERT(creds); | |
fb198a11 JG |
2629 | |
2630 | session_name_len = strlen(session->name); | |
95a29ab8 | 2631 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 JG |
2632 | |
2633 | if (!session_access_ok(session, | |
d7b377ed | 2634 | LTTNG_SOCK_GET_UID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2635 | ret = LTTNG_ERR_EPERM; |
2636 | goto end; | |
2637 | } | |
2638 | ||
2639 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2640 | if (provided_path) { | |
95a29ab8 | 2641 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2642 | len = strlen(provided_path); |
d2992717 | 2643 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2644 | ret = LTTNG_ERR_SET_URL; |
2645 | goto end; | |
2646 | } | |
511653c3 | 2647 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2648 | } else { |
7e078ad1 | 2649 | ssize_t ret_len; |
fb198a11 JG |
2650 | char *home_dir = utils_get_user_home_dir( |
2651 | LTTNG_SOCK_GET_UID_CRED(creds)); | |
2652 | if (!home_dir) { | |
2653 | ret = LTTNG_ERR_SET_URL; | |
2654 | goto end; | |
2655 | } | |
2656 | ||
d2992717 | 2657 | ret_len = snprintf(config_file_path, sizeof(config_file_path), |
fb198a11 JG |
2658 | DEFAULT_SESSION_HOME_CONFIGPATH, home_dir); |
2659 | free(home_dir); | |
7e078ad1 | 2660 | if (ret_len < 0) { |
fb198a11 JG |
2661 | PERROR("snprintf save session"); |
2662 | ret = LTTNG_ERR_SET_URL; | |
2663 | goto end; | |
2664 | } | |
7e078ad1 | 2665 | len = ret_len; |
fb198a11 JG |
2666 | } |
2667 | ||
2668 | /* | |
d2992717 DG |
2669 | * Check the path fits in the config file path dst including the '/' |
2670 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2671 | */ |
d2992717 DG |
2672 | if ((len + session_name_len + 2 + |
2673 | sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) | |
2674 | > sizeof(config_file_path)) { | |
fb198a11 JG |
2675 | ret = LTTNG_ERR_SET_URL; |
2676 | goto end; | |
2677 | } | |
2678 | ||
2679 | ret = run_as_mkdir_recursive(config_file_path, S_IRWXU | S_IRWXG, | |
2680 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2681 | if (ret) { | |
2682 | ret = LTTNG_ERR_SET_URL; | |
2683 | goto end; | |
2684 | } | |
2685 | ||
d2992717 DG |
2686 | /* |
2687 | * At this point, we know that everything fits in the buffer. Validation | |
2688 | * was done just above. | |
2689 | */ | |
fb198a11 | 2690 | config_file_path[len++] = '/'; |
511653c3 | 2691 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2692 | len += session_name_len; |
2693 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2694 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2695 | config_file_path[len] = '\0'; | |
fb198a11 | 2696 | |
f376ad9c JG |
2697 | if (!attr->overwrite) { |
2698 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2699 | } |
2700 | ||
f376ad9c | 2701 | fd = run_as_open(config_file_path, file_open_flags, |
fb198a11 JG |
2702 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, |
2703 | LTTNG_SOCK_GET_UID_CRED(creds), LTTNG_SOCK_GET_GID_CRED(creds)); | |
2704 | if (fd < 0) { | |
2705 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2706 | switch (errno) { |
2707 | case EEXIST: | |
2708 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2709 | break; | |
2710 | case EACCES: | |
2711 | ret = LTTNG_ERR_EPERM; | |
2712 | break; | |
2713 | default: | |
2714 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2715 | break; | |
2716 | } | |
fb198a11 JG |
2717 | goto end; |
2718 | } | |
2719 | ||
705bb62f | 2720 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2721 | if (!writer) { |
2722 | ret = LTTNG_ERR_NOMEM; | |
2723 | goto end; | |
2724 | } | |
2725 | ||
2726 | ret = config_writer_open_element(writer, config_element_sessions); | |
2727 | if (ret) { | |
2728 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2729 | goto end; | |
2730 | } | |
2731 | ||
2732 | ret = config_writer_open_element(writer, config_element_session); | |
2733 | if (ret) { | |
2734 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2735 | goto end; | |
2736 | } | |
2737 | ||
2738 | ret = config_writer_write_element_string(writer, config_element_name, | |
2739 | session->name); | |
2740 | if (ret) { | |
2741 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2742 | goto end; | |
2743 | } | |
2744 | ||
55c9e7ca | 2745 | if (session->shm_path[0] != '\0') { |
9e7c9f56 JR |
2746 | ret = config_writer_write_element_string(writer, |
2747 | config_element_shared_memory_path, | |
2748 | session->shm_path); | |
2749 | if (ret) { | |
2750 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2751 | goto end; | |
2752 | } | |
2753 | } | |
2754 | ||
fb198a11 | 2755 | ret = save_domains(writer, session); |
55c9e7ca | 2756 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2757 | goto end; |
2758 | } | |
2759 | ||
2760 | ret = config_writer_write_element_bool(writer, config_element_started, | |
8382cf6f | 2761 | session->active); |
fb198a11 JG |
2762 | if (ret) { |
2763 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2764 | goto end; | |
2765 | } | |
2766 | ||
329f3443 JD |
2767 | if (session->snapshot_mode || session->live_timer || |
2768 | session->rotate_timer_period || session->rotate_size) { | |
fb198a11 JG |
2769 | ret = config_writer_open_element(writer, config_element_attributes); |
2770 | if (ret) { | |
2771 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2772 | goto end; | |
2773 | } | |
2774 | ||
2775 | if (session->snapshot_mode) { | |
2776 | ret = config_writer_write_element_bool(writer, | |
2777 | config_element_snapshot_mode, 1); | |
2778 | if (ret) { | |
2779 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2780 | goto end; | |
2781 | } | |
329f3443 | 2782 | } else if (session->live_timer) { |
d98ad589 | 2783 | ret = config_writer_write_element_unsigned_int(writer, |
fb198a11 JG |
2784 | config_element_live_timer_interval, session->live_timer); |
2785 | if (ret) { | |
2786 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2787 | goto end; | |
2788 | } | |
2789 | } | |
ce6176f2 JG |
2790 | if (session->rotate_timer_period || session->rotate_size) { |
2791 | ret = save_session_rotation_schedules(writer, | |
2792 | session); | |
329f3443 JD |
2793 | if (ret) { |
2794 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2795 | goto end; | |
2796 | } | |
2797 | } | |
fb198a11 JG |
2798 | |
2799 | /* /attributes */ | |
2800 | ret = config_writer_close_element(writer); | |
2801 | if (ret) { | |
2802 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2803 | goto end; | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | ret = save_session_output(writer, session); | |
55c9e7ca | 2808 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2809 | goto end; |
2810 | } | |
2811 | ||
2812 | /* /session */ | |
2813 | ret = config_writer_close_element(writer); | |
2814 | if (ret) { | |
2815 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2816 | goto end; | |
2817 | } | |
2818 | ||
2819 | /* /sessions */ | |
2820 | ret = config_writer_close_element(writer); | |
2821 | if (ret) { | |
2822 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2823 | goto end; | |
2824 | } | |
55c9e7ca JR |
2825 | |
2826 | ret = LTTNG_OK; | |
fb198a11 JG |
2827 | end: |
2828 | if (writer && config_writer_destroy(writer)) { | |
2829 | /* Preserve the original error code */ | |
55c9e7ca | 2830 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 2831 | } |
55c9e7ca | 2832 | if (ret != LTTNG_OK) { |
fb198a11 | 2833 | /* Delete file in case of error */ |
b45f9ad2 | 2834 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
2835 | PERROR("Unlinking XML session configuration."); |
2836 | } | |
2837 | } | |
2838 | ||
b45f9ad2 | 2839 | if (fd >= 0) { |
55c9e7ca JR |
2840 | int closeret; |
2841 | ||
2842 | closeret = close(fd); | |
2843 | if (closeret) { | |
1d12100d JR |
2844 | PERROR("Closing XML session configuration"); |
2845 | } | |
2846 | } | |
2847 | ||
fb198a11 JG |
2848 | return ret; |
2849 | } | |
2850 | ||
2851 | int cmd_save_sessions(struct lttng_save_session_attr *attr, | |
2852 | lttng_sock_cred *creds) | |
2853 | { | |
2854 | int ret; | |
2855 | const char *session_name; | |
2856 | struct ltt_session *session; | |
2857 | ||
2858 | session_lock_list(); | |
2859 | ||
2860 | session_name = lttng_save_session_attr_get_session_name(attr); | |
2861 | if (session_name) { | |
2862 | session = session_find_by_name(session_name); | |
2863 | if (!session) { | |
2864 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
2865 | goto end; | |
2866 | } | |
2867 | ||
2868 | session_lock(session); | |
2869 | ret = save_session(session, attr, creds); | |
2870 | session_unlock(session); | |
e32d7f27 | 2871 | session_put(session); |
55c9e7ca | 2872 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2873 | goto end; |
2874 | } | |
2875 | } else { | |
2876 | struct ltt_session_list *list = session_get_list(); | |
2877 | ||
2878 | cds_list_for_each_entry(session, &list->head, list) { | |
e32d7f27 JG |
2879 | if (!session_get(session)) { |
2880 | continue; | |
2881 | } | |
fb198a11 JG |
2882 | session_lock(session); |
2883 | ret = save_session(session, attr, creds); | |
2884 | session_unlock(session); | |
e32d7f27 | 2885 | session_put(session); |
fb198a11 | 2886 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 2887 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
2888 | goto end; |
2889 | } | |
2890 | } | |
2891 | } | |
2892 | ret = LTTNG_OK; | |
2893 | ||
2894 | end: | |
2895 | session_unlock_list(); | |
2896 | return ret; | |
2897 | } |