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 |
28ab034a JG |
9 | #include "agent.hpp" |
10 | #include "kernel.hpp" | |
11 | #include "lttng-syscall.hpp" | |
12 | #include "save.hpp" | |
13 | #include "session.hpp" | |
14 | #include "trace-ust.hpp" | |
fb198a11 | 15 | |
28ab034a | 16 | #include <common/config/session-config.hpp> |
c9e313bc SM |
17 | #include <common/defaults.hpp> |
18 | #include <common/error.hpp> | |
c9e313bc | 19 | #include <common/runas.hpp> |
56047f5a | 20 | #include <common/urcu.hpp> |
28ab034a JG |
21 | #include <common/utils.hpp> |
22 | ||
c9e313bc | 23 | #include <lttng/save-internal.hpp> |
fb198a11 | 24 | |
671e39d7 | 25 | #include <fcntl.h> |
28ab034a JG |
26 | #include <inttypes.h> |
27 | #include <string.h> | |
28 | #include <unistd.h> | |
29 | #include <urcu/uatomic.h> | |
fb198a11 | 30 | |
55c9e7ca | 31 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
32 | static int save_kernel_channel_attributes(struct config_writer *writer, |
33 | struct lttng_channel_attr *attr) | |
fb198a11 JG |
34 | { |
35 | int ret; | |
36 | ||
37 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
38 | config_element_overwrite_mode, |
39 | attr->overwrite ? config_overwrite_mode_overwrite : | |
40 | config_overwrite_mode_discard); | |
fb198a11 | 41 | if (ret) { |
55c9e7ca | 42 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
43 | goto end; |
44 | } | |
45 | ||
28ab034a JG |
46 | ret = config_writer_write_element_unsigned_int( |
47 | writer, config_element_subbuf_size, attr->subbuf_size); | |
fb198a11 | 48 | if (ret) { |
55c9e7ca | 49 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
50 | goto end; |
51 | } | |
52 | ||
28ab034a JG |
53 | ret = config_writer_write_element_unsigned_int( |
54 | writer, config_element_num_subbuf, attr->num_subbuf); | |
fb198a11 | 55 | if (ret) { |
55c9e7ca | 56 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
57 | goto end; |
58 | } | |
59 | ||
28ab034a JG |
60 | ret = config_writer_write_element_unsigned_int( |
61 | writer, config_element_switch_timer_interval, attr->switch_timer_interval); | |
fb198a11 | 62 | if (ret) { |
55c9e7ca | 63 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
64 | goto end; |
65 | } | |
66 | ||
28ab034a JG |
67 | ret = config_writer_write_element_unsigned_int( |
68 | writer, config_element_read_timer_interval, attr->read_timer_interval); | |
fb198a11 | 69 | if (ret) { |
55c9e7ca | 70 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
71 | goto end; |
72 | } | |
73 | ||
74 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
75 | config_element_output_type, |
76 | attr->output == LTTNG_EVENT_SPLICE ? | |
77 | config_output_type_splice : | |
78 | config_output_type_mmap); | |
fb198a11 | 79 | if (ret) { |
55c9e7ca | 80 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
81 | goto end; |
82 | } | |
83 | ||
28ab034a JG |
84 | ret = config_writer_write_element_unsigned_int( |
85 | writer, config_element_tracefile_size, attr->tracefile_size); | |
fb198a11 | 86 | if (ret) { |
55c9e7ca | 87 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
88 | goto end; |
89 | } | |
90 | ||
28ab034a JG |
91 | ret = config_writer_write_element_unsigned_int( |
92 | writer, config_element_tracefile_count, attr->tracefile_count); | |
fb198a11 | 93 | if (ret) { |
55c9e7ca | 94 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
95 | goto end; |
96 | } | |
97 | ||
28ab034a JG |
98 | ret = config_writer_write_element_unsigned_int( |
99 | writer, config_element_live_timer_interval, attr->live_timer_interval); | |
fb198a11 | 100 | if (ret) { |
55c9e7ca | 101 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
102 | goto end; |
103 | } | |
4fc2b126 JR |
104 | |
105 | if (attr->extended.ptr) { | |
cd9adb8b | 106 | struct lttng_channel_extended *ext = nullptr; |
4fc2b126 JR |
107 | |
108 | ext = (struct lttng_channel_extended *) attr->extended.ptr; | |
28ab034a JG |
109 | ret = config_writer_write_element_unsigned_int( |
110 | writer, config_element_monitor_timer_interval, ext->monitor_timer_interval); | |
4fc2b126 | 111 | if (ret) { |
55c9e7ca | 112 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
113 | goto end; |
114 | } | |
275472aa | 115 | |
28ab034a JG |
116 | ret = config_writer_write_element_signed_int( |
117 | writer, config_element_blocking_timeout, ext->blocking_timeout); | |
275472aa | 118 | if (ret) { |
55c9e7ca | 119 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
120 | goto end; |
121 | } | |
4fc2b126 JR |
122 | } |
123 | ||
55c9e7ca | 124 | ret = LTTNG_OK; |
fb198a11 | 125 | end: |
55c9e7ca | 126 | return ret; |
fb198a11 JG |
127 | } |
128 | ||
55c9e7ca | 129 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
130 | static int save_ust_channel_attributes(struct config_writer *writer, |
131 | struct lttng_ust_abi_channel_attr *attr) | |
fb198a11 JG |
132 | { |
133 | int ret; | |
cd9adb8b | 134 | struct ltt_ust_channel *channel = nullptr; |
fb198a11 JG |
135 | |
136 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
137 | config_element_overwrite_mode, |
138 | attr->overwrite ? config_overwrite_mode_overwrite : | |
139 | config_overwrite_mode_discard); | |
fb198a11 | 140 | if (ret) { |
55c9e7ca | 141 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
142 | goto end; |
143 | } | |
144 | ||
28ab034a JG |
145 | ret = config_writer_write_element_unsigned_int( |
146 | writer, config_element_subbuf_size, attr->subbuf_size); | |
fb198a11 | 147 | if (ret) { |
55c9e7ca | 148 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
149 | goto end; |
150 | } | |
151 | ||
28ab034a JG |
152 | ret = config_writer_write_element_unsigned_int( |
153 | writer, config_element_num_subbuf, attr->num_subbuf); | |
fb198a11 | 154 | if (ret) { |
55c9e7ca | 155 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
156 | goto end; |
157 | } | |
158 | ||
28ab034a JG |
159 | ret = config_writer_write_element_unsigned_int( |
160 | writer, config_element_switch_timer_interval, attr->switch_timer_interval); | |
fb198a11 | 161 | if (ret) { |
55c9e7ca | 162 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
163 | goto end; |
164 | } | |
165 | ||
28ab034a JG |
166 | ret = config_writer_write_element_unsigned_int( |
167 | writer, config_element_read_timer_interval, attr->read_timer_interval); | |
fb198a11 | 168 | if (ret) { |
55c9e7ca | 169 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
170 | goto end; |
171 | } | |
172 | ||
173 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
174 | config_element_output_type, |
175 | attr->output == LTTNG_UST_ABI_MMAP ? | |
176 | config_output_type_mmap : | |
177 | config_output_type_splice); | |
fb198a11 | 178 | if (ret) { |
55c9e7ca | 179 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
180 | goto end; |
181 | } | |
4fc2b126 | 182 | |
28ab034a JG |
183 | ret = config_writer_write_element_signed_int( |
184 | writer, config_element_blocking_timeout, attr->u.s.blocking_timeout); | |
275472aa | 185 | if (ret) { |
55c9e7ca | 186 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
187 | goto end; |
188 | } | |
189 | ||
4fc2b126 JR |
190 | /* |
191 | * Fetch the monitor timer which is located in the parent of | |
192 | * lttng_ust_channel_attr | |
193 | */ | |
0114db0e | 194 | channel = lttng::utils::container_of(attr, <t_ust_channel::attr); |
28ab034a JG |
195 | ret = config_writer_write_element_unsigned_int( |
196 | writer, config_element_monitor_timer_interval, channel->monitor_timer_interval); | |
4fc2b126 | 197 | if (ret) { |
55c9e7ca | 198 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
199 | goto end; |
200 | } | |
201 | ||
55c9e7ca | 202 | ret = LTTNG_OK; |
fb198a11 | 203 | end: |
55c9e7ca | 204 | return ret; |
fb198a11 JG |
205 | } |
206 | ||
28ab034a JG |
207 | static const char * |
208 | get_kernel_instrumentation_string(enum lttng_kernel_abi_instrumentation instrumentation) | |
fb198a11 JG |
209 | { |
210 | const char *instrumentation_string; | |
211 | ||
212 | switch (instrumentation) { | |
b8e2fb80 | 213 | case LTTNG_KERNEL_ABI_ALL: |
fb198a11 JG |
214 | instrumentation_string = config_event_type_all; |
215 | break; | |
b8e2fb80 | 216 | case LTTNG_KERNEL_ABI_TRACEPOINT: |
fb198a11 JG |
217 | instrumentation_string = config_event_type_tracepoint; |
218 | break; | |
b8e2fb80 | 219 | case LTTNG_KERNEL_ABI_KPROBE: |
9d82c4c2 | 220 | instrumentation_string = config_event_type_probe; |
fb198a11 | 221 | break; |
b8e2fb80 | 222 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
223 | instrumentation_string = config_event_type_userspace_probe; |
224 | break; | |
b8e2fb80 | 225 | case LTTNG_KERNEL_ABI_FUNCTION: |
9d82c4c2 | 226 | instrumentation_string = config_event_type_function_entry; |
fb198a11 | 227 | break; |
b8e2fb80 | 228 | case LTTNG_KERNEL_ABI_KRETPROBE: |
9d82c4c2 | 229 | instrumentation_string = config_event_type_function; |
fb198a11 | 230 | break; |
b8e2fb80 | 231 | case LTTNG_KERNEL_ABI_NOOP: |
fb198a11 JG |
232 | instrumentation_string = config_event_type_noop; |
233 | break; | |
b8e2fb80 | 234 | case LTTNG_KERNEL_ABI_SYSCALL: |
fb198a11 JG |
235 | instrumentation_string = config_event_type_syscall; |
236 | break; | |
237 | default: | |
cd9adb8b | 238 | instrumentation_string = nullptr; |
fb198a11 JG |
239 | } |
240 | ||
241 | return instrumentation_string; | |
242 | } | |
243 | ||
28ab034a | 244 | static const char *get_kernel_context_type_string(enum lttng_kernel_abi_context_type context_type) |
fb198a11 JG |
245 | { |
246 | const char *context_type_string; | |
247 | ||
248 | switch (context_type) { | |
b8e2fb80 | 249 | case LTTNG_KERNEL_ABI_CONTEXT_PID: |
fb198a11 JG |
250 | context_type_string = config_event_context_pid; |
251 | break; | |
b8e2fb80 | 252 | case LTTNG_KERNEL_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
253 | context_type_string = config_event_context_procname; |
254 | break; | |
b8e2fb80 | 255 | case LTTNG_KERNEL_ABI_CONTEXT_PRIO: |
fb198a11 JG |
256 | context_type_string = config_event_context_prio; |
257 | break; | |
b8e2fb80 | 258 | case LTTNG_KERNEL_ABI_CONTEXT_NICE: |
fb198a11 JG |
259 | context_type_string = config_event_context_nice; |
260 | break; | |
b8e2fb80 | 261 | case LTTNG_KERNEL_ABI_CONTEXT_VPID: |
fb198a11 JG |
262 | context_type_string = config_event_context_vpid; |
263 | break; | |
b8e2fb80 | 264 | case LTTNG_KERNEL_ABI_CONTEXT_TID: |
fb198a11 JG |
265 | context_type_string = config_event_context_tid; |
266 | break; | |
b8e2fb80 | 267 | case LTTNG_KERNEL_ABI_CONTEXT_VTID: |
fb198a11 JG |
268 | context_type_string = config_event_context_vtid; |
269 | break; | |
b8e2fb80 | 270 | case LTTNG_KERNEL_ABI_CONTEXT_PPID: |
fb198a11 JG |
271 | context_type_string = config_event_context_ppid; |
272 | break; | |
b8e2fb80 | 273 | case LTTNG_KERNEL_ABI_CONTEXT_VPPID: |
fb198a11 JG |
274 | context_type_string = config_event_context_vppid; |
275 | break; | |
b8e2fb80 | 276 | case LTTNG_KERNEL_ABI_CONTEXT_HOSTNAME: |
fb198a11 JG |
277 | context_type_string = config_event_context_hostname; |
278 | break; | |
b8e2fb80 | 279 | case LTTNG_KERNEL_ABI_CONTEXT_INTERRUPTIBLE: |
1ae5e83e JD |
280 | context_type_string = config_event_context_interruptible; |
281 | break; | |
b8e2fb80 | 282 | case LTTNG_KERNEL_ABI_CONTEXT_PREEMPTIBLE: |
1ae5e83e JD |
283 | context_type_string = config_event_context_preemptible; |
284 | break; | |
b8e2fb80 | 285 | case LTTNG_KERNEL_ABI_CONTEXT_NEED_RESCHEDULE: |
1ae5e83e JD |
286 | context_type_string = config_event_context_need_reschedule; |
287 | break; | |
b8e2fb80 | 288 | case LTTNG_KERNEL_ABI_CONTEXT_MIGRATABLE: |
1ae5e83e JD |
289 | context_type_string = config_event_context_migratable; |
290 | break; | |
b8e2fb80 | 291 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_USER: |
16c4c991 FD |
292 | context_type_string = config_event_context_callstack_user; |
293 | break; | |
b8e2fb80 | 294 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_KERNEL: |
16c4c991 FD |
295 | context_type_string = config_event_context_callstack_kernel; |
296 | break; | |
b8e2fb80 | 297 | case LTTNG_KERNEL_ABI_CONTEXT_CGROUP_NS: |
40e14884 MJ |
298 | context_type_string = config_event_context_cgroup_ns; |
299 | break; | |
b8e2fb80 | 300 | case LTTNG_KERNEL_ABI_CONTEXT_IPC_NS: |
40e14884 MJ |
301 | context_type_string = config_event_context_ipc_ns; |
302 | break; | |
b8e2fb80 | 303 | case LTTNG_KERNEL_ABI_CONTEXT_MNT_NS: |
40e14884 MJ |
304 | context_type_string = config_event_context_mnt_ns; |
305 | break; | |
b8e2fb80 | 306 | case LTTNG_KERNEL_ABI_CONTEXT_NET_NS: |
40e14884 MJ |
307 | context_type_string = config_event_context_net_ns; |
308 | break; | |
b8e2fb80 | 309 | case LTTNG_KERNEL_ABI_CONTEXT_PID_NS: |
40e14884 MJ |
310 | context_type_string = config_event_context_pid_ns; |
311 | break; | |
b8e2fb80 | 312 | case LTTNG_KERNEL_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
313 | context_type_string = config_event_context_time_ns; |
314 | break; | |
b8e2fb80 | 315 | case LTTNG_KERNEL_ABI_CONTEXT_USER_NS: |
40e14884 MJ |
316 | context_type_string = config_event_context_user_ns; |
317 | break; | |
b8e2fb80 | 318 | case LTTNG_KERNEL_ABI_CONTEXT_UTS_NS: |
40e14884 MJ |
319 | context_type_string = config_event_context_uts_ns; |
320 | break; | |
b8e2fb80 | 321 | case LTTNG_KERNEL_ABI_CONTEXT_UID: |
499cbfa1 MJ |
322 | context_type_string = config_event_context_uid; |
323 | break; | |
b8e2fb80 | 324 | case LTTNG_KERNEL_ABI_CONTEXT_EUID: |
499cbfa1 MJ |
325 | context_type_string = config_event_context_euid; |
326 | break; | |
b8e2fb80 | 327 | case LTTNG_KERNEL_ABI_CONTEXT_SUID: |
499cbfa1 MJ |
328 | context_type_string = config_event_context_suid; |
329 | break; | |
b8e2fb80 | 330 | case LTTNG_KERNEL_ABI_CONTEXT_GID: |
499cbfa1 MJ |
331 | context_type_string = config_event_context_gid; |
332 | break; | |
b8e2fb80 | 333 | case LTTNG_KERNEL_ABI_CONTEXT_EGID: |
499cbfa1 MJ |
334 | context_type_string = config_event_context_egid; |
335 | break; | |
b8e2fb80 | 336 | case LTTNG_KERNEL_ABI_CONTEXT_SGID: |
499cbfa1 MJ |
337 | context_type_string = config_event_context_sgid; |
338 | break; | |
b8e2fb80 | 339 | case LTTNG_KERNEL_ABI_CONTEXT_VUID: |
499cbfa1 MJ |
340 | context_type_string = config_event_context_vuid; |
341 | break; | |
b8e2fb80 | 342 | case LTTNG_KERNEL_ABI_CONTEXT_VEUID: |
499cbfa1 MJ |
343 | context_type_string = config_event_context_veuid; |
344 | break; | |
b8e2fb80 | 345 | case LTTNG_KERNEL_ABI_CONTEXT_VSUID: |
499cbfa1 MJ |
346 | context_type_string = config_event_context_vsuid; |
347 | break; | |
b8e2fb80 | 348 | case LTTNG_KERNEL_ABI_CONTEXT_VGID: |
499cbfa1 MJ |
349 | context_type_string = config_event_context_vgid; |
350 | break; | |
b8e2fb80 | 351 | case LTTNG_KERNEL_ABI_CONTEXT_VEGID: |
499cbfa1 MJ |
352 | context_type_string = config_event_context_vegid; |
353 | break; | |
b8e2fb80 | 354 | case LTTNG_KERNEL_ABI_CONTEXT_VSGID: |
499cbfa1 MJ |
355 | context_type_string = config_event_context_vsgid; |
356 | break; | |
fb198a11 | 357 | default: |
cd9adb8b | 358 | context_type_string = nullptr; |
fb198a11 JG |
359 | } |
360 | ||
361 | return context_type_string; | |
362 | } | |
363 | ||
28ab034a | 364 | static const char *get_ust_context_type_string(enum lttng_ust_abi_context_type context_type) |
fb198a11 JG |
365 | { |
366 | const char *context_type_string; | |
367 | ||
368 | switch (context_type) { | |
fc4b93fa | 369 | case LTTNG_UST_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
370 | context_type_string = config_event_context_procname; |
371 | break; | |
fc4b93fa | 372 | case LTTNG_UST_ABI_CONTEXT_VPID: |
fb198a11 JG |
373 | context_type_string = config_event_context_vpid; |
374 | break; | |
fc4b93fa | 375 | case LTTNG_UST_ABI_CONTEXT_VTID: |
fb198a11 JG |
376 | context_type_string = config_event_context_vtid; |
377 | break; | |
fc4b93fa | 378 | case LTTNG_UST_ABI_CONTEXT_IP: |
fb198a11 JG |
379 | context_type_string = config_event_context_ip; |
380 | break; | |
fc4b93fa | 381 | case LTTNG_UST_ABI_CONTEXT_PTHREAD_ID: |
fb198a11 JG |
382 | context_type_string = config_event_context_pthread_id; |
383 | break; | |
fc4b93fa | 384 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
385 | context_type_string = config_event_context_app; |
386 | break; | |
fc4b93fa | 387 | case LTTNG_UST_ABI_CONTEXT_CGROUP_NS: |
f17b8732 MJ |
388 | context_type_string = config_event_context_cgroup_ns; |
389 | break; | |
fc4b93fa | 390 | case LTTNG_UST_ABI_CONTEXT_IPC_NS: |
f17b8732 MJ |
391 | context_type_string = config_event_context_ipc_ns; |
392 | break; | |
fc4b93fa | 393 | case LTTNG_UST_ABI_CONTEXT_MNT_NS: |
f17b8732 MJ |
394 | context_type_string = config_event_context_mnt_ns; |
395 | break; | |
fc4b93fa | 396 | case LTTNG_UST_ABI_CONTEXT_NET_NS: |
f17b8732 MJ |
397 | context_type_string = config_event_context_net_ns; |
398 | break; | |
fc4b93fa | 399 | case LTTNG_UST_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
400 | context_type_string = config_event_context_time_ns; |
401 | break; | |
fc4b93fa | 402 | case LTTNG_UST_ABI_CONTEXT_PID_NS: |
f17b8732 MJ |
403 | context_type_string = config_event_context_pid_ns; |
404 | break; | |
fc4b93fa | 405 | case LTTNG_UST_ABI_CONTEXT_USER_NS: |
f17b8732 MJ |
406 | context_type_string = config_event_context_user_ns; |
407 | break; | |
fc4b93fa | 408 | case LTTNG_UST_ABI_CONTEXT_UTS_NS: |
f17b8732 MJ |
409 | context_type_string = config_event_context_uts_ns; |
410 | break; | |
fc4b93fa | 411 | case LTTNG_UST_ABI_CONTEXT_VUID: |
4fc59cb8 MJ |
412 | context_type_string = config_event_context_vuid; |
413 | break; | |
fc4b93fa | 414 | case LTTNG_UST_ABI_CONTEXT_VEUID: |
4fc59cb8 MJ |
415 | context_type_string = config_event_context_veuid; |
416 | break; | |
fc4b93fa | 417 | case LTTNG_UST_ABI_CONTEXT_VSUID: |
4fc59cb8 MJ |
418 | context_type_string = config_event_context_vsuid; |
419 | break; | |
fc4b93fa | 420 | case LTTNG_UST_ABI_CONTEXT_VGID: |
4fc59cb8 MJ |
421 | context_type_string = config_event_context_vgid; |
422 | break; | |
fc4b93fa | 423 | case LTTNG_UST_ABI_CONTEXT_VEGID: |
4fc59cb8 MJ |
424 | context_type_string = config_event_context_vegid; |
425 | break; | |
fc4b93fa | 426 | case LTTNG_UST_ABI_CONTEXT_VSGID: |
4fc59cb8 MJ |
427 | context_type_string = config_event_context_vsgid; |
428 | break; | |
fc4b93fa | 429 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
14ce5bd8 JG |
430 | /* |
431 | * Error, should not be stored in the XML, perf contexts | |
432 | * are stored as a node of type event_perf_context_type. | |
433 | */ | |
fb198a11 | 434 | default: |
cd9adb8b | 435 | context_type_string = nullptr; |
e885a367 | 436 | break; |
fb198a11 JG |
437 | } |
438 | ||
439 | return context_type_string; | |
440 | } | |
441 | ||
28ab034a | 442 | static const char *get_buffer_type_string(enum lttng_buffer_type buffer_type) |
fb198a11 JG |
443 | { |
444 | const char *buffer_type_string; | |
445 | ||
446 | switch (buffer_type) { | |
447 | case LTTNG_BUFFER_PER_PID: | |
448 | buffer_type_string = config_buffer_type_per_pid; | |
449 | break; | |
450 | case LTTNG_BUFFER_PER_UID: | |
451 | buffer_type_string = config_buffer_type_per_uid; | |
452 | break; | |
453 | case LTTNG_BUFFER_GLOBAL: | |
454 | buffer_type_string = config_buffer_type_global; | |
455 | break; | |
456 | default: | |
cd9adb8b | 457 | buffer_type_string = nullptr; |
fb198a11 JG |
458 | } |
459 | ||
460 | return buffer_type_string; | |
461 | } | |
462 | ||
28ab034a | 463 | static const char *get_loglevel_type_string(enum lttng_ust_abi_loglevel_type loglevel_type) |
fb198a11 JG |
464 | { |
465 | const char *loglevel_type_string; | |
466 | ||
467 | switch (loglevel_type) { | |
fc4b93fa | 468 | case LTTNG_UST_ABI_LOGLEVEL_ALL: |
fb198a11 JG |
469 | loglevel_type_string = config_loglevel_type_all; |
470 | break; | |
fc4b93fa | 471 | case LTTNG_UST_ABI_LOGLEVEL_RANGE: |
fb198a11 JG |
472 | loglevel_type_string = config_loglevel_type_range; |
473 | break; | |
fc4b93fa | 474 | case LTTNG_UST_ABI_LOGLEVEL_SINGLE: |
fb198a11 JG |
475 | loglevel_type_string = config_loglevel_type_single; |
476 | break; | |
477 | default: | |
cd9adb8b | 478 | loglevel_type_string = nullptr; |
fb198a11 JG |
479 | } |
480 | ||
481 | return loglevel_type_string; | |
482 | } | |
483 | ||
55c9e7ca | 484 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 485 | static int save_kernel_function_event(struct config_writer *writer, struct ltt_kernel_event *event) |
83712c39 FD |
486 | { |
487 | int ret; | |
488 | ||
489 | ret = config_writer_open_element(writer, config_element_function_attributes); | |
490 | if (ret) { | |
491 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
492 | goto end; | |
493 | } | |
494 | ||
28ab034a JG |
495 | ret = config_writer_write_element_string( |
496 | writer, config_element_name, event->event->u.ftrace.symbol_name); | |
83712c39 FD |
497 | if (ret) { |
498 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
499 | goto end; | |
500 | } | |
501 | ||
502 | /* /function attributes */ | |
503 | ret = config_writer_close_element(writer); | |
504 | if (ret) { | |
505 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
506 | goto end; | |
507 | } | |
508 | end: | |
509 | return ret; | |
510 | } | |
511 | ||
28ab034a | 512 | static int save_kernel_kprobe_event(struct config_writer *writer, struct ltt_kernel_event *event) |
83712c39 FD |
513 | { |
514 | int ret; | |
515 | const char *symbol_name; | |
516 | uint64_t addr; | |
517 | uint64_t offset; | |
518 | ||
519 | switch (event->event->instrumentation) { | |
b8e2fb80 | 520 | case LTTNG_KERNEL_ABI_KPROBE: |
83712c39 FD |
521 | /* |
522 | * Comments in lttng-kernel.h mention that | |
523 | * either addr or symbol_name are set, not both. | |
524 | */ | |
525 | addr = event->event->u.kprobe.addr; | |
526 | offset = event->event->u.kprobe.offset; | |
cd9adb8b | 527 | symbol_name = addr ? nullptr : event->event->u.kprobe.symbol_name; |
83712c39 | 528 | break; |
b8e2fb80 | 529 | case LTTNG_KERNEL_ABI_KRETPROBE: |
83712c39 FD |
530 | addr = event->event->u.kretprobe.addr; |
531 | offset = event->event->u.kretprobe.offset; | |
cd9adb8b | 532 | symbol_name = addr ? nullptr : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
533 | break; |
534 | default: | |
c1e83fb4 FD |
535 | ERR("Unsupported kernel instrumentation type."); |
536 | ret = LTTNG_ERR_INVALID; | |
537 | goto end; | |
83712c39 FD |
538 | } |
539 | ||
540 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
541 | if (ret) { | |
542 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
543 | goto end; | |
544 | } | |
545 | ||
c1e83fb4 | 546 | if (addr) { |
28ab034a JG |
547 | ret = config_writer_write_element_unsigned_int( |
548 | writer, config_element_address, addr); | |
c1e83fb4 FD |
549 | if (ret) { |
550 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
551 | goto end; | |
552 | } | |
553 | } else if (symbol_name) { | |
28ab034a JG |
554 | ret = config_writer_write_element_string( |
555 | writer, config_element_symbol_name, symbol_name); | |
83712c39 FD |
556 | if (ret) { |
557 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
558 | goto end; | |
559 | } | |
c1e83fb4 FD |
560 | /* If the offset is non-zero, write it.*/ |
561 | if (offset) { | |
28ab034a JG |
562 | ret = config_writer_write_element_unsigned_int( |
563 | writer, config_element_offset, offset); | |
c1e83fb4 FD |
564 | if (ret) { |
565 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
566 | goto end; | |
567 | } | |
568 | } | |
569 | } else { | |
570 | /* | |
571 | * This really should not happen as we are either setting the | |
572 | * address or the symbol above. | |
573 | */ | |
574 | ERR("Invalid probe/function description."); | |
575 | ret = LTTNG_ERR_INVALID; | |
576 | goto end; | |
83712c39 FD |
577 | } |
578 | ||
c1e83fb4 FD |
579 | ret = config_writer_close_element(writer); |
580 | if (ret) { | |
581 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
582 | goto end; | |
583 | } | |
584 | end: | |
585 | return ret; | |
586 | } | |
587 | ||
588 | /* | |
589 | * Save the userspace probe tracepoint event associated with the event to the | |
590 | * config writer. | |
591 | */ | |
28ab034a JG |
592 | static int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, |
593 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
594 | { |
595 | int ret = 0; | |
596 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
597 | const struct lttng_userspace_probe_location *userspace_probe_location; |
598 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
599 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
600 | ||
601 | /* Get userspace probe location from the event. */ | |
602 | userspace_probe_location = event->userspace_probe_location; | |
603 | if (!userspace_probe_location) { | |
604 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
605 | goto end; | |
606 | } | |
607 | ||
608 | /* Get lookup method and lookup method type. */ | |
609 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
610 | if (!lookup_method) { | |
611 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
612 | goto end; | |
613 | } | |
614 | ||
615 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
616 | ||
617 | /* Get the binary path, probe name and provider name. */ | |
618 | binary_path = | |
28ab034a | 619 | lttng_userspace_probe_location_tracepoint_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
620 | if (!binary_path) { |
621 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
622 | goto end; | |
623 | } | |
624 | ||
625 | probe_name = | |
28ab034a | 626 | lttng_userspace_probe_location_tracepoint_get_probe_name(userspace_probe_location); |
c1e83fb4 FD |
627 | if (!probe_name) { |
628 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
629 | goto end; | |
630 | } | |
631 | ||
28ab034a JG |
632 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name( |
633 | userspace_probe_location); | |
c1e83fb4 FD |
634 | if (!provider_name) { |
635 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
636 | goto end; | |
637 | } | |
638 | ||
639 | /* Open a userspace probe tracepoint attribute. */ | |
28ab034a JG |
640 | ret = config_writer_open_element(writer, |
641 | config_element_userspace_probe_tracepoint_attributes); | |
c1e83fb4 FD |
642 | if (ret) { |
643 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
644 | goto end; | |
645 | } | |
646 | ||
647 | switch (lookup_type) { | |
648 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
28ab034a JG |
649 | ret = config_writer_write_element_string( |
650 | writer, | |
651 | config_element_userspace_probe_lookup, | |
652 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
653 | if (ret) { |
654 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
655 | goto end; | |
656 | } | |
c1e83fb4 FD |
657 | break; |
658 | default: | |
659 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
660 | ret = LTTNG_ERR_INVALID; | |
661 | goto end; | |
83712c39 FD |
662 | } |
663 | ||
c1e83fb4 | 664 | /* Write the binary path, provider name and the probe name. */ |
28ab034a JG |
665 | ret = config_writer_write_element_string( |
666 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
667 | if (ret) { |
668 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
669 | goto end; | |
670 | } | |
671 | ||
28ab034a JG |
672 | ret = config_writer_write_element_string( |
673 | writer, | |
674 | config_element_userspace_probe_tracepoint_location_provider_name, | |
675 | provider_name); | |
c1e83fb4 FD |
676 | if (ret) { |
677 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
678 | goto end; | |
679 | } | |
680 | ||
28ab034a JG |
681 | ret = config_writer_write_element_string( |
682 | writer, config_element_userspace_probe_tracepoint_location_probe_name, probe_name); | |
c1e83fb4 FD |
683 | if (ret) { |
684 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
685 | goto end; | |
686 | } | |
687 | ||
688 | /* Close the userspace probe tracepoint attribute. */ | |
689 | ret = config_writer_close_element(writer); | |
690 | if (ret) { | |
691 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
692 | goto end; | |
693 | } | |
694 | ||
695 | end: | |
696 | return ret; | |
697 | } | |
698 | ||
699 | /* | |
700 | * Save the userspace probe function event associated with the event to the | |
701 | * config writer. | |
702 | */ | |
28ab034a JG |
703 | static int save_kernel_userspace_probe_function_event(struct config_writer *writer, |
704 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
705 | { |
706 | int ret = 0; | |
707 | const char *function_name, *binary_path; | |
87597c2c JG |
708 | const struct lttng_userspace_probe_location *userspace_probe_location; |
709 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
710 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
711 | ||
712 | /* Get userspace probe location from the event. */ | |
713 | userspace_probe_location = event->userspace_probe_location; | |
714 | if (!userspace_probe_location) { | |
715 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
716 | goto end; | |
717 | } | |
718 | ||
719 | /* Get lookup method and lookup method type. */ | |
28ab034a | 720 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); |
c1e83fb4 FD |
721 | if (!lookup_method) { |
722 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
723 | goto end; | |
724 | } | |
725 | ||
726 | /* Get the binary path and the function name. */ | |
727 | binary_path = | |
28ab034a | 728 | lttng_userspace_probe_location_function_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
729 | if (!binary_path) { |
730 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
731 | goto end; | |
732 | } | |
733 | ||
734 | function_name = | |
28ab034a | 735 | lttng_userspace_probe_location_function_get_function_name(userspace_probe_location); |
c1e83fb4 FD |
736 | if (!function_name) { |
737 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
738 | goto end; | |
739 | } | |
740 | ||
741 | /* Open a userspace probe function attribute. */ | |
742 | ret = config_writer_open_element(writer, | |
28ab034a | 743 | config_element_userspace_probe_function_attributes); |
c1e83fb4 FD |
744 | if (ret) { |
745 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
746 | goto end; | |
747 | } | |
748 | ||
749 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
750 | switch (lookup_type) { | |
751 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
28ab034a JG |
752 | ret = config_writer_write_element_string( |
753 | writer, | |
754 | config_element_userspace_probe_lookup, | |
755 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
756 | if (ret) { |
757 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
758 | goto end; | |
759 | } | |
c1e83fb4 FD |
760 | break; |
761 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
28ab034a JG |
762 | ret = config_writer_write_element_string( |
763 | writer, | |
764 | config_element_userspace_probe_lookup, | |
765 | config_element_userspace_probe_lookup_function_default); | |
c1e83fb4 FD |
766 | if (ret) { |
767 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
768 | goto end; | |
769 | } | |
770 | break; | |
771 | default: | |
772 | ERR("Unsupported kernel userspace probe function lookup method."); | |
773 | ret = LTTNG_ERR_INVALID; | |
774 | goto end; | |
83712c39 FD |
775 | } |
776 | ||
c1e83fb4 | 777 | /* Write the binary path and the function name. */ |
28ab034a JG |
778 | ret = config_writer_write_element_string( |
779 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
780 | if (ret) { |
781 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
782 | goto end; | |
783 | } | |
784 | ||
28ab034a JG |
785 | ret = config_writer_write_element_string( |
786 | writer, | |
787 | config_element_userspace_probe_function_location_function_name, | |
788 | function_name); | |
c1e83fb4 FD |
789 | if (ret) { |
790 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
791 | goto end; | |
792 | } | |
793 | ||
794 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
795 | ret = config_writer_close_element(writer); |
796 | if (ret) { | |
797 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
798 | goto end; | |
799 | } | |
c1e83fb4 | 800 | |
83712c39 FD |
801 | end: |
802 | return ret; | |
803 | } | |
c1e83fb4 | 804 | |
28ab034a JG |
805 | static int save_kernel_userspace_probe_event(struct config_writer *writer, |
806 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
807 | { |
808 | int ret; | |
809 | struct lttng_userspace_probe_location *userspace_probe_location; | |
810 | ||
811 | /* Get userspace probe location from the event. */ | |
812 | userspace_probe_location = event->userspace_probe_location; | |
813 | if (!userspace_probe_location) { | |
814 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
815 | goto end; | |
816 | } | |
817 | ||
28ab034a | 818 | switch (lttng_userspace_probe_location_get_type(userspace_probe_location)) { |
c1e83fb4 FD |
819 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: |
820 | { | |
821 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
822 | if (ret) { | |
823 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
824 | goto end; | |
825 | } | |
826 | break; | |
827 | } | |
828 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
829 | { | |
830 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
831 | if (ret) { | |
832 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
833 | goto end; | |
834 | } | |
835 | break; | |
836 | } | |
837 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
838 | default: | |
839 | ERR("Unsupported kernel userspace probe location type."); | |
840 | ret = LTTNG_ERR_INVALID; | |
841 | goto end; | |
842 | } | |
843 | ||
844 | end: | |
845 | return ret; | |
846 | } | |
847 | ||
28ab034a | 848 | static int save_kernel_event(struct config_writer *writer, struct ltt_kernel_event *event) |
fb198a11 JG |
849 | { |
850 | int ret; | |
851 | const char *instrumentation_type; | |
852 | ||
853 | ret = config_writer_open_element(writer, config_element_event); | |
854 | if (ret) { | |
855 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
856 | goto end; | |
857 | } | |
858 | ||
859 | if (event->event->name[0]) { | |
28ab034a JG |
860 | ret = config_writer_write_element_string( |
861 | writer, config_element_name, event->event->name); | |
fb198a11 JG |
862 | if (ret) { |
863 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
864 | goto end; | |
865 | } | |
866 | } | |
867 | ||
28ab034a | 868 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
869 | if (ret) { |
870 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
871 | goto end; | |
872 | } | |
873 | ||
28ab034a | 874 | instrumentation_type = get_kernel_instrumentation_string(event->event->instrumentation); |
fb198a11 JG |
875 | if (!instrumentation_type) { |
876 | ret = LTTNG_ERR_INVALID; | |
877 | goto end; | |
878 | } | |
879 | ||
28ab034a | 880 | ret = config_writer_write_element_string(writer, config_element_type, instrumentation_type); |
fb198a11 JG |
881 | if (ret) { |
882 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
883 | goto end; | |
884 | } | |
885 | ||
911d1560 | 886 | if (event->filter_expression) { |
28ab034a JG |
887 | ret = config_writer_write_element_string( |
888 | writer, config_element_filter, event->filter_expression); | |
911d1560 JG |
889 | if (ret) { |
890 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
891 | goto end; | |
892 | } | |
893 | } | |
894 | ||
b8e2fb80 | 895 | if (event->event->instrumentation == LTTNG_KERNEL_ABI_FUNCTION || |
28ab034a JG |
896 | event->event->instrumentation == LTTNG_KERNEL_ABI_KPROBE || |
897 | event->event->instrumentation == LTTNG_KERNEL_ABI_UPROBE || | |
898 | event->event->instrumentation == LTTNG_KERNEL_ABI_KRETPROBE) { | |
899 | ret = config_writer_open_element(writer, config_element_attributes); | |
fb198a11 JG |
900 | if (ret) { |
901 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
902 | goto end; | |
903 | } | |
904 | ||
905 | switch (event->event->instrumentation) { | |
b8e2fb80 FD |
906 | case LTTNG_KERNEL_ABI_SYSCALL: |
907 | case LTTNG_KERNEL_ABI_FUNCTION: | |
83712c39 | 908 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 909 | if (ret) { |
fb198a11 JG |
910 | goto end; |
911 | } | |
912 | break; | |
b8e2fb80 FD |
913 | case LTTNG_KERNEL_ABI_KPROBE: |
914 | case LTTNG_KERNEL_ABI_KRETPROBE: | |
83712c39 | 915 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 916 | if (ret) { |
fb198a11 JG |
917 | goto end; |
918 | } | |
919 | break; | |
b8e2fb80 | 920 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
921 | ret = save_kernel_userspace_probe_event(writer, event); |
922 | if (ret) { | |
923 | goto end; | |
924 | } | |
925 | break; | |
fb198a11 JG |
926 | default: |
927 | ERR("Unsupported kernel instrumentation type."); | |
928 | ret = LTTNG_ERR_INVALID; | |
929 | goto end; | |
930 | } | |
931 | ||
932 | /* /attributes */ | |
933 | ret = config_writer_close_element(writer); | |
934 | if (ret) { | |
935 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
936 | goto end; | |
937 | } | |
938 | } | |
939 | ||
940 | /* /event */ | |
941 | ret = config_writer_close_element(writer); | |
942 | if (ret) { | |
943 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
944 | goto end; | |
945 | } | |
55c9e7ca JR |
946 | |
947 | ret = LTTNG_OK; | |
fb198a11 JG |
948 | end: |
949 | return ret; | |
950 | } | |
951 | ||
55c9e7ca | 952 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 953 | static int save_kernel_events(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
954 | { |
955 | int ret; | |
956 | struct ltt_kernel_event *event; | |
957 | ||
958 | ret = config_writer_open_element(writer, config_element_events); | |
959 | if (ret) { | |
960 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
961 | goto end; | |
962 | } | |
963 | ||
28ab034a | 964 | cds_list_for_each_entry (event, &kchan->events_list.head, list) { |
fb198a11 | 965 | ret = save_kernel_event(writer, event); |
55c9e7ca | 966 | if (ret != LTTNG_OK) { |
fb198a11 JG |
967 | goto end; |
968 | } | |
969 | } | |
970 | ||
971 | /* /events */ | |
972 | ret = config_writer_close_element(writer); | |
973 | if (ret) { | |
974 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
975 | goto end; | |
976 | } | |
55c9e7ca JR |
977 | |
978 | ret = LTTNG_OK; | |
fb198a11 JG |
979 | end: |
980 | return ret; | |
981 | } | |
982 | ||
55c9e7ca | 983 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 984 | static int save_ust_event(struct config_writer *writer, struct ltt_ust_event *event) |
fb198a11 JG |
985 | { |
986 | int ret; | |
987 | const char *loglevel_type_string; | |
988 | ||
989 | ret = config_writer_open_element(writer, config_element_event); | |
990 | if (ret) { | |
991 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
992 | goto end; | |
993 | } | |
994 | ||
995 | if (event->attr.name[0]) { | |
28ab034a JG |
996 | ret = config_writer_write_element_string( |
997 | writer, config_element_name, event->attr.name); | |
fb198a11 JG |
998 | if (ret) { |
999 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1000 | goto end; | |
1001 | } | |
1002 | } | |
1003 | ||
28ab034a | 1004 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
1005 | if (ret) { |
1006 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1007 | goto end; | |
1008 | } | |
1009 | ||
fc4b93fa | 1010 | if (event->attr.instrumentation != LTTNG_UST_ABI_TRACEPOINT) { |
fb198a11 JG |
1011 | ERR("Unsupported UST instrumentation type."); |
1012 | ret = LTTNG_ERR_INVALID; | |
1013 | goto end; | |
1014 | } | |
28ab034a JG |
1015 | ret = config_writer_write_element_string( |
1016 | writer, config_element_type, config_event_type_tracepoint); | |
fb198a11 JG |
1017 | if (ret) { |
1018 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1019 | goto end; | |
1020 | } | |
1021 | ||
28ab034a JG |
1022 | loglevel_type_string = |
1023 | get_loglevel_type_string((lttng_ust_abi_loglevel_type) event->attr.loglevel_type); | |
fb198a11 JG |
1024 | if (!loglevel_type_string) { |
1025 | ERR("Unsupported UST loglevel type."); | |
1026 | ret = LTTNG_ERR_INVALID; | |
1027 | goto end; | |
1028 | } | |
1029 | ||
28ab034a JG |
1030 | ret = config_writer_write_element_string( |
1031 | writer, config_element_loglevel_type, loglevel_type_string); | |
fb198a11 JG |
1032 | if (ret) { |
1033 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1034 | goto end; | |
1035 | } | |
1036 | ||
1adbdb10 | 1037 | /* The log level is irrelevant if no "filtering" is enabled */ |
fc4b93fa | 1038 | if (event->attr.loglevel_type != LTTNG_UST_ABI_LOGLEVEL_ALL) { |
28ab034a JG |
1039 | ret = config_writer_write_element_signed_int( |
1040 | writer, config_element_loglevel, event->attr.loglevel); | |
1adbdb10 JG |
1041 | if (ret) { |
1042 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1043 | goto end; | |
1044 | } | |
fb198a11 JG |
1045 | } |
1046 | ||
1047 | if (event->filter_expression) { | |
28ab034a JG |
1048 | ret = config_writer_write_element_string( |
1049 | writer, config_element_filter, event->filter_expression); | |
fb198a11 JG |
1050 | if (ret) { |
1051 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1052 | goto end; | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | if (event->exclusion && event->exclusion->count) { | |
1057 | uint32_t i; | |
1058 | ||
28ab034a | 1059 | ret = config_writer_open_element(writer, config_element_exclusions); |
fb198a11 JG |
1060 | if (ret) { |
1061 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1062 | goto end; | |
1063 | } | |
1064 | ||
1065 | for (i = 0; i < event->exclusion->count; i++) { | |
28ab034a JG |
1066 | ret = config_writer_write_element_string( |
1067 | writer, | |
fb198a11 | 1068 | config_element_exclusion, |
28ab034a | 1069 | LTTNG_EVENT_EXCLUSION_NAME_AT(event->exclusion, i)); |
fb198a11 JG |
1070 | if (ret) { |
1071 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1072 | goto end; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | /* /exclusions */ | |
1077 | ret = config_writer_close_element(writer); | |
1078 | if (ret) { | |
1079 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1080 | goto end; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /* /event */ | |
1085 | ret = config_writer_close_element(writer); | |
1086 | if (ret) { | |
1087 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1088 | goto end; | |
1089 | } | |
55c9e7ca JR |
1090 | |
1091 | ret = LTTNG_OK; | |
fb198a11 JG |
1092 | end: |
1093 | return ret; | |
1094 | } | |
1095 | ||
55c9e7ca | 1096 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1097 | static int save_ust_events(struct config_writer *writer, struct lttng_ht *events) |
fb198a11 JG |
1098 | { |
1099 | int ret; | |
1100 | struct ltt_ust_event *event; | |
1101 | struct lttng_ht_node_str *node; | |
1102 | struct lttng_ht_iter iter; | |
1103 | ||
1104 | ret = config_writer_open_element(writer, config_element_events); | |
1105 | if (ret) { | |
1106 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1107 | goto end; | |
1108 | } | |
1109 | ||
56047f5a JG |
1110 | { |
1111 | lttng::urcu::read_lock_guard read_lock; | |
fb198a11 | 1112 | |
56047f5a JG |
1113 | cds_lfht_for_each_entry (events->ht, &iter.iter, node, node) { |
1114 | event = lttng::utils::container_of(node, <t_ust_event::node); | |
1115 | ||
1116 | if (event->internal) { | |
1117 | /* Internal events must not be exposed to clients */ | |
1118 | continue; | |
1119 | } | |
1120 | ret = save_ust_event(writer, event); | |
1121 | if (ret != LTTNG_OK) { | |
1122 | goto end; | |
1123 | } | |
fb198a11 JG |
1124 | } |
1125 | } | |
fb198a11 JG |
1126 | |
1127 | /* /events */ | |
1128 | ret = config_writer_close_element(writer); | |
1129 | if (ret) { | |
1130 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1131 | goto end; | |
1132 | } | |
55c9e7ca JR |
1133 | |
1134 | ret = LTTNG_OK; | |
fb198a11 JG |
1135 | end: |
1136 | return ret; | |
1137 | } | |
1138 | ||
55c9e7ca | 1139 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1140 | static int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
1141 | struct agent_event *agent_event) | |
51755dc8 | 1142 | { |
55c9e7ca | 1143 | int ret; |
fc4b93fa | 1144 | enum lttng_ust_abi_loglevel_type ust_loglevel_type; |
0b35b846 | 1145 | |
44760c20 | 1146 | ust_event->enabled = AGENT_EVENT_IS_ENABLED(agent_event); |
fc4b93fa | 1147 | ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
28ab034a | 1148 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, LTTNG_SYMBOL_NAME_LEN)) { |
55c9e7ca | 1149 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1150 | goto end; |
1151 | } | |
0b35b846 JG |
1152 | switch (agent_event->loglevel_type) { |
1153 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
fc4b93fa | 1154 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
0b35b846 JG |
1155 | break; |
1156 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 1157 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
0b35b846 JG |
1158 | break; |
1159 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
fc4b93fa | 1160 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
0b35b846 JG |
1161 | break; |
1162 | default: | |
1163 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1164 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1165 | goto end; |
1166 | } | |
1167 | ||
1168 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1169 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1170 | ust_event->filter_expression = agent_event->filter_expression; |
1171 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1172 | |
1173 | ret = LTTNG_OK; | |
0b35b846 JG |
1174 | end: |
1175 | return ret; | |
51755dc8 JG |
1176 | } |
1177 | ||
55c9e7ca | 1178 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1179 | static int save_agent_events(struct config_writer *writer, struct agent *agent) |
51755dc8 JG |
1180 | { |
1181 | int ret; | |
1182 | struct lttng_ht_iter iter; | |
1183 | struct lttng_ht_node_str *node; | |
1184 | ||
1185 | ret = config_writer_open_element(writer, config_element_events); | |
1186 | if (ret) { | |
1187 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1188 | goto end; | |
1189 | } | |
1190 | ||
56047f5a JG |
1191 | { |
1192 | lttng::urcu::read_lock_guard read_lock; | |
1193 | ||
1194 | cds_lfht_for_each_entry (agent->events->ht, &iter.iter, node, node) { | |
1195 | struct agent_event *agent_event; | |
1196 | struct ltt_ust_event fake_event; | |
1197 | ||
1198 | memset(&fake_event, 0, sizeof(fake_event)); | |
1199 | agent_event = lttng::utils::container_of(node, &agent_event::node); | |
1200 | ||
1201 | /* | |
1202 | * Initialize a fake ust event to reuse the same serialization | |
1203 | * function since UST and agent events contain the same info | |
1204 | * (and one could wonder why they don't reuse the same | |
1205 | * structures...). | |
1206 | */ | |
1207 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); | |
1208 | if (ret != LTTNG_OK) { | |
1209 | goto end; | |
1210 | } | |
1211 | ret = save_ust_event(writer, &fake_event); | |
1212 | if (ret != LTTNG_OK) { | |
1213 | goto end; | |
1214 | } | |
51755dc8 JG |
1215 | } |
1216 | } | |
51755dc8 JG |
1217 | |
1218 | /* /events */ | |
1219 | ret = config_writer_close_element(writer); | |
1220 | if (ret) { | |
1221 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1222 | goto end; | |
1223 | } | |
55c9e7ca JR |
1224 | |
1225 | ret = LTTNG_OK; | |
51755dc8 JG |
1226 | end: |
1227 | return ret; | |
1228 | } | |
1229 | ||
55c9e7ca | 1230 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1231 | static int save_kernel_context(struct config_writer *writer, struct lttng_kernel_abi_context *ctx) |
fb198a11 | 1232 | { |
55c9e7ca | 1233 | int ret = LTTNG_OK; |
fb198a11 JG |
1234 | |
1235 | if (!ctx) { | |
1236 | goto end; | |
1237 | } | |
1238 | ||
fb198a11 JG |
1239 | ret = config_writer_open_element(writer, config_element_context); |
1240 | if (ret) { | |
1241 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1242 | goto end; | |
1243 | } | |
1244 | ||
b8e2fb80 | 1245 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
28ab034a | 1246 | ret = config_writer_open_element(writer, config_element_context_perf); |
fb198a11 JG |
1247 | if (ret) { |
1248 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1249 | goto end; | |
1250 | } | |
1251 | ||
28ab034a JG |
1252 | ret = config_writer_write_element_unsigned_int( |
1253 | writer, config_element_type, ctx->u.perf_counter.type); | |
fb198a11 JG |
1254 | if (ret) { |
1255 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1256 | goto end; | |
1257 | } | |
1258 | ||
28ab034a JG |
1259 | ret = config_writer_write_element_unsigned_int( |
1260 | writer, config_element_config, ctx->u.perf_counter.config); | |
fb198a11 JG |
1261 | if (ret) { |
1262 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1263 | goto end; | |
1264 | } | |
1265 | ||
28ab034a JG |
1266 | ret = config_writer_write_element_string( |
1267 | writer, config_element_name, ctx->u.perf_counter.name); | |
fb198a11 JG |
1268 | if (ret) { |
1269 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1270 | goto end; | |
1271 | } | |
1272 | ||
1273 | /* /perf */ | |
1274 | ret = config_writer_close_element(writer); | |
1275 | if (ret) { | |
1276 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1277 | goto end; | |
1278 | } | |
1279 | } else { | |
28ab034a | 1280 | const char *context_type_string = get_kernel_context_type_string(ctx->ctx); |
fb198a11 JG |
1281 | |
1282 | if (!context_type_string) { | |
1283 | ERR("Unsupported kernel context type."); | |
1284 | ret = LTTNG_ERR_INVALID; | |
1285 | goto end; | |
1286 | } | |
1287 | ||
28ab034a JG |
1288 | ret = config_writer_write_element_string( |
1289 | writer, config_element_type, context_type_string); | |
fb198a11 JG |
1290 | if (ret) { |
1291 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1292 | goto end; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | /* /context */ | |
1297 | ret = config_writer_close_element(writer); | |
1298 | if (ret) { | |
1299 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1300 | goto end; | |
1301 | } | |
1302 | ||
55c9e7ca | 1303 | ret = LTTNG_OK; |
645328ae DG |
1304 | end: |
1305 | return ret; | |
1306 | } | |
1307 | ||
55c9e7ca | 1308 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1309 | static int save_kernel_contexts(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
645328ae DG |
1310 | { |
1311 | int ret; | |
1312 | struct ltt_kernel_context *ctx; | |
1313 | ||
2aa64052 | 1314 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1315 | ret = LTTNG_OK; |
2aa64052 JG |
1316 | goto end; |
1317 | } | |
1318 | ||
645328ae DG |
1319 | ret = config_writer_open_element(writer, config_element_contexts); |
1320 | if (ret) { | |
1321 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1322 | goto end; | |
1323 | } | |
1324 | ||
28ab034a | 1325 | cds_list_for_each_entry (ctx, &kchan->ctx_list, list) { |
645328ae | 1326 | ret = save_kernel_context(writer, &ctx->ctx); |
55c9e7ca | 1327 | if (ret != LTTNG_OK) { |
645328ae DG |
1328 | goto end; |
1329 | } | |
1330 | } | |
1331 | ||
fb198a11 JG |
1332 | /* /contexts */ |
1333 | ret = config_writer_close_element(writer); | |
1334 | if (ret) { | |
1335 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1336 | goto end; | |
1337 | } | |
55c9e7ca JR |
1338 | |
1339 | ret = LTTNG_OK; | |
fb198a11 JG |
1340 | end: |
1341 | return ret; | |
1342 | } | |
1343 | ||
55c9e7ca | 1344 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1345 | static int save_ust_context_perf_thread_counter(struct config_writer *writer, |
1346 | struct ltt_ust_context *ctx) | |
045fc617 JG |
1347 | { |
1348 | int ret; | |
1349 | ||
a0377dfe FD |
1350 | LTTNG_ASSERT(writer); |
1351 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1352 | |
1353 | /* Perf contexts are saved as event_perf_context_type */ | |
1354 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1355 | if (ret) { | |
1356 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1357 | goto end; | |
1358 | } | |
1359 | ||
28ab034a JG |
1360 | ret = config_writer_write_element_unsigned_int( |
1361 | writer, config_element_type, ctx->ctx.u.perf_counter.type); | |
045fc617 JG |
1362 | if (ret) { |
1363 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1364 | goto end; | |
1365 | } | |
1366 | ||
28ab034a JG |
1367 | ret = config_writer_write_element_unsigned_int( |
1368 | writer, config_element_config, ctx->ctx.u.perf_counter.config); | |
045fc617 JG |
1369 | if (ret) { |
1370 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1371 | goto end; | |
1372 | } | |
1373 | ||
28ab034a JG |
1374 | ret = config_writer_write_element_string( |
1375 | writer, config_element_name, ctx->ctx.u.perf_counter.name); | |
045fc617 JG |
1376 | if (ret) { |
1377 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1378 | goto end; | |
1379 | } | |
1380 | ||
1381 | /* /perf */ | |
1382 | ret = config_writer_close_element(writer); | |
1383 | if (ret) { | |
1384 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1385 | goto end; | |
1386 | } | |
55c9e7ca JR |
1387 | |
1388 | ret = LTTNG_OK; | |
045fc617 JG |
1389 | end: |
1390 | return ret; | |
1391 | } | |
1392 | ||
55c9e7ca | 1393 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1394 | static int save_ust_context_app_ctx(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1395 | { |
1396 | int ret; | |
1397 | ||
a0377dfe FD |
1398 | LTTNG_ASSERT(writer); |
1399 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1400 | |
1401 | /* Application contexts are saved as application_context_type */ | |
1402 | ret = config_writer_open_element(writer, config_element_context_app); | |
1403 | if (ret) { | |
1404 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1405 | goto end; | |
1406 | } | |
1407 | ||
28ab034a JG |
1408 | ret = config_writer_write_element_string( |
1409 | writer, config_element_context_app_provider_name, ctx->ctx.u.app_ctx.provider_name); | |
045fc617 JG |
1410 | if (ret) { |
1411 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1412 | goto end; | |
1413 | } | |
1414 | ||
28ab034a JG |
1415 | ret = config_writer_write_element_string( |
1416 | writer, config_element_context_app_ctx_name, ctx->ctx.u.app_ctx.ctx_name); | |
045fc617 JG |
1417 | if (ret) { |
1418 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1419 | goto end; | |
1420 | } | |
1421 | ||
1422 | /* /app */ | |
1423 | ret = config_writer_close_element(writer); | |
1424 | if (ret) { | |
1425 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1426 | goto end; | |
1427 | } | |
55c9e7ca JR |
1428 | |
1429 | ret = LTTNG_OK; | |
045fc617 JG |
1430 | end: |
1431 | return ret; | |
1432 | } | |
1433 | ||
55c9e7ca | 1434 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1435 | static int save_ust_context_generic(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1436 | { |
1437 | int ret; | |
1438 | const char *context_type_string; | |
1439 | ||
a0377dfe FD |
1440 | LTTNG_ASSERT(writer); |
1441 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1442 | |
1443 | /* Save context as event_context_type_type */ | |
28ab034a | 1444 | context_type_string = get_ust_context_type_string(ctx->ctx.ctx); |
045fc617 JG |
1445 | if (!context_type_string) { |
1446 | ERR("Unsupported UST context type."); | |
1447 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1448 | goto end; | |
1449 | } | |
1450 | ||
28ab034a | 1451 | ret = config_writer_write_element_string(writer, config_element_type, context_type_string); |
045fc617 JG |
1452 | if (ret) { |
1453 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1454 | goto end; | |
1455 | } | |
55c9e7ca JR |
1456 | |
1457 | ret = LTTNG_OK; | |
045fc617 JG |
1458 | end: |
1459 | return ret; | |
1460 | } | |
1461 | ||
55c9e7ca | 1462 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1463 | static int save_ust_context(struct config_writer *writer, struct cds_list_head *ctx_list) |
fb198a11 JG |
1464 | { |
1465 | int ret; | |
1466 | struct ltt_ust_context *ctx; | |
1467 | ||
a0377dfe FD |
1468 | LTTNG_ASSERT(writer); |
1469 | LTTNG_ASSERT(ctx_list); | |
fb198a11 JG |
1470 | |
1471 | ret = config_writer_open_element(writer, config_element_contexts); | |
1472 | if (ret) { | |
1473 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1474 | goto end; | |
1475 | } | |
1476 | ||
28ab034a JG |
1477 | cds_list_for_each_entry (ctx, ctx_list, list) { |
1478 | ret = config_writer_open_element(writer, config_element_context); | |
fb198a11 JG |
1479 | if (ret) { |
1480 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1481 | goto end; | |
1482 | } | |
1483 | ||
045fc617 | 1484 | switch (ctx->ctx.ctx) { |
fc4b93fa | 1485 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
045fc617 JG |
1486 | ret = save_ust_context_perf_thread_counter(writer, ctx); |
1487 | break; | |
fc4b93fa | 1488 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
1489 | ret = save_ust_context_app_ctx(writer, ctx); |
1490 | break; | |
1491 | default: | |
1492 | /* Save generic context. */ | |
1493 | ret = save_ust_context_generic(writer, ctx); | |
1494 | } | |
55c9e7ca | 1495 | if (ret != LTTNG_OK) { |
045fc617 | 1496 | goto end; |
fb198a11 JG |
1497 | } |
1498 | ||
1499 | /* /context */ | |
1500 | ret = config_writer_close_element(writer); | |
1501 | if (ret) { | |
1502 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1503 | goto end; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | /* /contexts */ | |
1508 | ret = config_writer_close_element(writer); | |
1509 | if (ret) { | |
1510 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1511 | goto end; | |
1512 | } | |
55c9e7ca JR |
1513 | |
1514 | ret = LTTNG_OK; | |
fb198a11 JG |
1515 | end: |
1516 | return ret; | |
1517 | } | |
1518 | ||
55c9e7ca | 1519 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1520 | static int save_kernel_channel(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
1521 | { |
1522 | int ret; | |
1523 | ||
a0377dfe FD |
1524 | LTTNG_ASSERT(writer); |
1525 | LTTNG_ASSERT(kchan); | |
fb198a11 JG |
1526 | |
1527 | ret = config_writer_open_element(writer, config_element_channel); | |
1528 | if (ret) { | |
1529 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1530 | goto end; | |
1531 | } | |
1532 | ||
28ab034a | 1533 | ret = config_writer_write_element_string(writer, config_element_name, kchan->channel->name); |
fb198a11 JG |
1534 | if (ret) { |
1535 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1536 | goto end; | |
1537 | } | |
1538 | ||
28ab034a JG |
1539 | ret = config_writer_write_element_bool( |
1540 | writer, config_element_enabled, kchan->channel->enabled); | |
fb198a11 JG |
1541 | if (ret) { |
1542 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1543 | goto end; | |
1544 | } | |
1545 | ||
1546 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1547 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1548 | goto end; |
1549 | } | |
1550 | ||
0de3eda1 | 1551 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1552 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1553 | goto end; |
1554 | } | |
1555 | ||
645328ae | 1556 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1557 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1558 | goto end; |
1559 | } | |
1560 | ||
1561 | /* /channel */ | |
1562 | ret = config_writer_close_element(writer); | |
1563 | if (ret) { | |
1564 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1565 | goto end; | |
1566 | } | |
55c9e7ca JR |
1567 | |
1568 | ret = LTTNG_OK; | |
fb198a11 JG |
1569 | end: |
1570 | return ret; | |
1571 | } | |
1572 | ||
55c9e7ca | 1573 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1574 | static int save_ust_channel(struct config_writer *writer, |
1575 | struct ltt_ust_channel *ust_chan, | |
1576 | struct ltt_ust_session *session) | |
fb198a11 JG |
1577 | { |
1578 | int ret; | |
1579 | ||
a0377dfe FD |
1580 | LTTNG_ASSERT(writer); |
1581 | LTTNG_ASSERT(ust_chan); | |
1582 | LTTNG_ASSERT(session); | |
fb198a11 JG |
1583 | |
1584 | ret = config_writer_open_element(writer, config_element_channel); | |
1585 | if (ret) { | |
1586 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1587 | goto end; | |
1588 | } | |
1589 | ||
28ab034a | 1590 | ret = config_writer_write_element_string(writer, config_element_name, ust_chan->name); |
fb198a11 JG |
1591 | if (ret) { |
1592 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1593 | goto end; | |
1594 | } | |
1595 | ||
28ab034a | 1596 | ret = config_writer_write_element_bool(writer, config_element_enabled, ust_chan->enabled); |
fb198a11 JG |
1597 | if (ret) { |
1598 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1599 | goto end; | |
1600 | } | |
1601 | ||
1602 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1603 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1604 | goto end; |
1605 | } | |
1606 | ||
28ab034a JG |
1607 | ret = config_writer_write_element_unsigned_int( |
1608 | writer, config_element_tracefile_size, ust_chan->tracefile_size); | |
fb198a11 JG |
1609 | if (ret) { |
1610 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1611 | goto end; | |
1612 | } | |
1613 | ||
28ab034a JG |
1614 | ret = config_writer_write_element_unsigned_int( |
1615 | writer, config_element_tracefile_count, ust_chan->tracefile_count); | |
fb198a11 JG |
1616 | if (ret) { |
1617 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1618 | goto end; | |
1619 | } | |
1620 | ||
28ab034a JG |
1621 | ret = config_writer_write_element_unsigned_int( |
1622 | writer, config_element_live_timer_interval, session->live_timer_interval); | |
fb198a11 JG |
1623 | if (ret) { |
1624 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1625 | goto end; | |
1626 | } | |
1627 | ||
51755dc8 JG |
1628 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1629 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1630 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1631 | goto end; |
1632 | } | |
1633 | } else { | |
cd9adb8b | 1634 | struct agent *agent = nullptr; |
51755dc8 JG |
1635 | |
1636 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1637 | if (!agent) { | |
1638 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1639 | ERR("Could not find agent associated to UST subdomain"); | |
1640 | goto end; | |
1641 | } | |
1642 | ||
1643 | /* | |
1644 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1645 | * or Python) don't have any non-internal events. We retrieve | |
1646 | * the "agent" events associated with this channel and serialize | |
1647 | * them. | |
1648 | */ | |
8cd0a98d | 1649 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1650 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1651 | goto end; |
1652 | } | |
fb198a11 JG |
1653 | } |
1654 | ||
1655 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1656 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1657 | goto end; |
1658 | } | |
1659 | ||
1660 | /* /channel */ | |
1661 | ret = config_writer_close_element(writer); | |
1662 | if (ret) { | |
1663 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1664 | goto end; | |
1665 | } | |
55c9e7ca JR |
1666 | |
1667 | ret = LTTNG_OK; | |
fb198a11 JG |
1668 | end: |
1669 | return ret; | |
1670 | } | |
1671 | ||
55c9e7ca | 1672 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1673 | static int save_kernel_session(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
1674 | { |
1675 | int ret; | |
1676 | struct ltt_kernel_channel *kchan; | |
1677 | ||
a0377dfe FD |
1678 | LTTNG_ASSERT(writer); |
1679 | LTTNG_ASSERT(session); | |
fb198a11 | 1680 | |
28ab034a JG |
1681 | ret = config_writer_write_element_string( |
1682 | writer, config_element_type, config_domain_type_kernel); | |
fb198a11 JG |
1683 | if (ret) { |
1684 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1685 | goto end; | |
1686 | } | |
1687 | ||
28ab034a JG |
1688 | ret = config_writer_write_element_string( |
1689 | writer, config_element_buffer_type, config_buffer_type_global); | |
fb198a11 JG |
1690 | if (ret) { |
1691 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1692 | goto end; | |
1693 | } | |
1694 | ||
28ab034a | 1695 | ret = config_writer_open_element(writer, config_element_channels); |
fb198a11 JG |
1696 | if (ret) { |
1697 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1698 | goto end; | |
1699 | } | |
1700 | ||
28ab034a | 1701 | cds_list_for_each_entry (kchan, &session->kernel_session->channel_list.head, list) { |
fb198a11 | 1702 | ret = save_kernel_channel(writer, kchan); |
55c9e7ca | 1703 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1704 | goto end; |
1705 | } | |
1706 | } | |
1707 | ||
1708 | /* /channels */ | |
1709 | ret = config_writer_close_element(writer); | |
1710 | if (ret) { | |
1711 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1712 | goto end; | |
1713 | } | |
55c9e7ca JR |
1714 | |
1715 | ret = LTTNG_OK; | |
fb198a11 JG |
1716 | end: |
1717 | return ret; | |
1718 | } | |
1719 | ||
28ab034a | 1720 | static const char *get_config_domain_str(enum lttng_domain_type domain) |
51755dc8 JG |
1721 | { |
1722 | const char *str_dom; | |
1723 | ||
1724 | switch (domain) { | |
1725 | case LTTNG_DOMAIN_KERNEL: | |
1726 | str_dom = config_domain_type_kernel; | |
1727 | break; | |
1728 | case LTTNG_DOMAIN_UST: | |
1729 | str_dom = config_domain_type_ust; | |
1730 | break; | |
1731 | case LTTNG_DOMAIN_JUL: | |
1732 | str_dom = config_domain_type_jul; | |
1733 | break; | |
1734 | case LTTNG_DOMAIN_LOG4J: | |
1735 | str_dom = config_domain_type_log4j; | |
1736 | break; | |
1737 | case LTTNG_DOMAIN_PYTHON: | |
1738 | str_dom = config_domain_type_python; | |
1739 | break; | |
1740 | default: | |
a0377dfe | 1741 | abort(); |
51755dc8 JG |
1742 | } |
1743 | ||
1744 | return str_dom; | |
1745 | } | |
1746 | ||
55c9e7ca | 1747 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 1748 | static int save_process_attr_tracker(struct config_writer *writer, |
28ab034a JG |
1749 | struct ltt_session *sess, |
1750 | int domain, | |
1751 | enum lttng_process_attr process_attr) | |
e8fcabef | 1752 | { |
55c9e7ca | 1753 | int ret = LTTNG_OK; |
55c9e7ca | 1754 | const char *element_id_tracker, *element_target_id, *element_id; |
159b042f JG |
1755 | const struct process_attr_tracker *tracker; |
1756 | enum lttng_tracking_policy tracking_policy; | |
cd9adb8b | 1757 | struct lttng_process_attr_values *values = nullptr; |
159b042f JG |
1758 | |
1759 | switch (process_attr) { | |
1760 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1761 | element_id_tracker = config_element_process_attr_tracker_pid; | |
1762 | element_target_id = config_element_process_attr_pid_value; | |
1763 | element_id = config_element_process_attr_id; | |
1764 | break; | |
1765 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1766 | element_id_tracker = config_element_process_attr_tracker_vpid; | |
1767 | element_target_id = config_element_process_attr_vpid_value; | |
1768 | element_id = config_element_process_attr_id; | |
1769 | break; | |
1770 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1771 | element_id_tracker = config_element_process_attr_tracker_uid; | |
1772 | element_target_id = config_element_process_attr_uid_value; | |
1773 | element_id = config_element_process_attr_id; | |
1774 | break; | |
1775 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1776 | element_id_tracker = config_element_process_attr_tracker_vuid; | |
1777 | element_target_id = config_element_process_attr_vuid_value; | |
1778 | element_id = config_element_process_attr_id; | |
1779 | break; | |
1780 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1781 | element_id_tracker = config_element_process_attr_tracker_gid; | |
1782 | element_target_id = config_element_process_attr_gid_value; | |
1783 | element_id = config_element_process_attr_id; | |
1784 | break; | |
1785 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1786 | element_id_tracker = config_element_process_attr_tracker_vgid; | |
1787 | element_target_id = config_element_process_attr_vgid_value; | |
1788 | element_id = config_element_process_attr_id; | |
55c9e7ca JR |
1789 | break; |
1790 | default: | |
1791 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1792 | goto end; | |
1793 | } | |
e8fcabef JG |
1794 | |
1795 | switch (domain) { | |
1796 | case LTTNG_DOMAIN_KERNEL: | |
1797 | { | |
28ab034a | 1798 | tracker = kernel_get_process_attr_tracker(sess->kernel_session, process_attr); |
a0377dfe | 1799 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1800 | break; |
1801 | } | |
1802 | case LTTNG_DOMAIN_UST: | |
1803 | { | |
28ab034a | 1804 | tracker = trace_ust_get_process_attr_tracker(sess->ust_session, process_attr); |
a0377dfe | 1805 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1806 | break; |
1807 | } | |
1808 | case LTTNG_DOMAIN_JUL: | |
1809 | case LTTNG_DOMAIN_LOG4J: | |
1810 | case LTTNG_DOMAIN_PYTHON: | |
1811 | default: | |
159b042f | 1812 | ret = LTTNG_ERR_UNSUPPORTED_DOMAIN; |
e8fcabef JG |
1813 | goto end; |
1814 | } | |
1815 | ||
159b042f JG |
1816 | tracking_policy = process_attr_tracker_get_tracking_policy(tracker); |
1817 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_ALL) { | |
1818 | /* Tracking all, nothing to output. */ | |
1819 | ret = LTTNG_OK; | |
e283e4a0 JR |
1820 | goto end; |
1821 | } | |
a7a533cd | 1822 | |
55c9e7ca JR |
1823 | ret = config_writer_open_element(writer, element_id_tracker); |
1824 | if (ret) { | |
1825 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1826 | goto end; | |
1827 | } | |
1828 | ||
28ab034a | 1829 | ret = config_writer_open_element(writer, config_element_process_attr_values); |
55c9e7ca JR |
1830 | if (ret) { |
1831 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1832 | goto end; | |
1833 | } | |
1834 | ||
88ac6301 | 1835 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_SET) { |
159b042f JG |
1836 | unsigned int i, count; |
1837 | enum process_attr_tracker_status status = | |
28ab034a | 1838 | process_attr_tracker_get_inclusion_set(tracker, &values); |
159b042f JG |
1839 | |
1840 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1841 | ret = LTTNG_ERR_NOMEM; | |
1842 | goto end; | |
1843 | } | |
1844 | ||
1845 | count = _lttng_process_attr_values_get_count(values); | |
1846 | ||
1847 | for (i = 0; i < count; i++) { | |
1848 | unsigned int integral_value = UINT_MAX; | |
cd9adb8b | 1849 | const char *name = nullptr; |
159b042f | 1850 | const struct process_attr_value *value = |
28ab034a | 1851 | lttng_process_attr_tracker_values_get_at_index(values, i); |
159b042f | 1852 | |
a0377dfe | 1853 | LTTNG_ASSERT(value); |
28ab034a | 1854 | ret = config_writer_open_element(writer, element_target_id); |
159b042f | 1855 | if (ret) { |
a7a533cd JR |
1856 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1857 | goto end; | |
1858 | } | |
159b042f JG |
1859 | |
1860 | switch (value->type) { | |
1861 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_PID: | |
28ab034a | 1862 | integral_value = (unsigned int) value->value.pid; |
55c9e7ca | 1863 | break; |
159b042f | 1864 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_UID: |
28ab034a | 1865 | integral_value = (unsigned int) value->value.uid; |
159b042f JG |
1866 | break; |
1867 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GID: | |
28ab034a | 1868 | integral_value = (unsigned int) value->value.gid; |
159b042f JG |
1869 | break; |
1870 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME: | |
1871 | name = value->value.user_name; | |
a0377dfe | 1872 | LTTNG_ASSERT(name); |
159b042f JG |
1873 | break; |
1874 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME: | |
1875 | name = value->value.group_name; | |
a0377dfe | 1876 | LTTNG_ASSERT(name); |
55c9e7ca JR |
1877 | break; |
1878 | default: | |
159b042f | 1879 | abort(); |
e8fcabef | 1880 | } |
159b042f JG |
1881 | |
1882 | if (name) { | |
28ab034a JG |
1883 | ret = config_writer_write_element_string( |
1884 | writer, config_element_name, name); | |
159b042f JG |
1885 | } else { |
1886 | ret = config_writer_write_element_unsigned_int( | |
28ab034a | 1887 | writer, element_id, integral_value); |
e8fcabef | 1888 | } |
159b042f JG |
1889 | |
1890 | if (ret) { | |
2d97a006 JR |
1891 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1892 | goto end; | |
1893 | } | |
e8fcabef | 1894 | |
55c9e7ca | 1895 | /* /$element_target_id */ |
e8fcabef JG |
1896 | ret = config_writer_close_element(writer); |
1897 | if (ret) { | |
1898 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1899 | goto end; | |
1900 | } | |
1901 | } | |
55c9e7ca | 1902 | } |
e8fcabef | 1903 | |
88ac6301 | 1904 | /* /values */ |
55c9e7ca JR |
1905 | ret = config_writer_close_element(writer); |
1906 | if (ret) { | |
1907 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1908 | goto end; | |
1909 | } | |
e8fcabef | 1910 | |
55c9e7ca JR |
1911 | /* /$element_id_tracker */ |
1912 | ret = config_writer_close_element(writer); | |
1913 | if (ret) { | |
1914 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1915 | goto end; | |
e8fcabef | 1916 | } |
55c9e7ca JR |
1917 | |
1918 | ret = LTTNG_OK; | |
e8fcabef | 1919 | end: |
159b042f | 1920 | lttng_process_attr_values_destroy(values); |
e8fcabef JG |
1921 | return ret; |
1922 | } | |
1923 | ||
55c9e7ca | 1924 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1925 | static int |
1926 | save_process_attr_trackers(struct config_writer *writer, struct ltt_session *sess, int domain) | |
55c9e7ca JR |
1927 | { |
1928 | int ret; | |
1929 | ||
1930 | switch (domain) { | |
1931 | case LTTNG_DOMAIN_KERNEL: | |
28ab034a JG |
1932 | ret = save_process_attr_tracker( |
1933 | writer, sess, domain, LTTNG_PROCESS_ATTR_PROCESS_ID); | |
159b042f JG |
1934 | if (ret != LTTNG_OK) { |
1935 | goto end; | |
1936 | } | |
28ab034a JG |
1937 | ret = save_process_attr_tracker( |
1938 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1939 | if (ret != LTTNG_OK) { |
1940 | goto end; | |
1941 | } | |
28ab034a | 1942 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_USER_ID); |
159b042f JG |
1943 | if (ret != LTTNG_OK) { |
1944 | goto end; | |
1945 | } | |
28ab034a JG |
1946 | ret = save_process_attr_tracker( |
1947 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1948 | if (ret != LTTNG_OK) { |
1949 | goto end; | |
1950 | } | |
28ab034a | 1951 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_GROUP_ID); |
159b042f JG |
1952 | if (ret != LTTNG_OK) { |
1953 | goto end; | |
1954 | } | |
28ab034a JG |
1955 | ret = save_process_attr_tracker( |
1956 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1957 | if (ret != LTTNG_OK) { |
1958 | goto end; | |
1959 | } | |
55c9e7ca JR |
1960 | break; |
1961 | case LTTNG_DOMAIN_UST: | |
28ab034a JG |
1962 | ret = save_process_attr_tracker( |
1963 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1964 | if (ret != LTTNG_OK) { |
1965 | goto end; | |
1966 | } | |
28ab034a JG |
1967 | ret = save_process_attr_tracker( |
1968 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1969 | if (ret != LTTNG_OK) { |
1970 | goto end; | |
1971 | } | |
28ab034a JG |
1972 | ret = save_process_attr_tracker( |
1973 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1974 | if (ret != LTTNG_OK) { |
1975 | goto end; | |
1976 | } | |
55c9e7ca JR |
1977 | break; |
1978 | default: | |
159b042f | 1979 | ret = LTTNG_ERR_INVALID; |
74675e31 | 1980 | goto end; |
55c9e7ca | 1981 | } |
159b042f JG |
1982 | ret = LTTNG_OK; |
1983 | end: | |
1984 | return ret; | |
55c9e7ca JR |
1985 | } |
1986 | ||
1987 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
28ab034a JG |
1988 | static int save_ust_domain(struct config_writer *writer, |
1989 | struct ltt_session *session, | |
1990 | enum lttng_domain_type domain) | |
fb198a11 JG |
1991 | { |
1992 | int ret; | |
1993 | struct ltt_ust_channel *ust_chan; | |
1994 | const char *buffer_type_string; | |
1995 | struct lttng_ht_node_str *node; | |
1996 | struct lttng_ht_iter iter; | |
51755dc8 | 1997 | const char *config_domain_name; |
fb198a11 | 1998 | |
a0377dfe FD |
1999 | LTTNG_ASSERT(writer); |
2000 | LTTNG_ASSERT(session); | |
fb198a11 | 2001 | |
28ab034a | 2002 | ret = config_writer_open_element(writer, config_element_domain); |
51755dc8 JG |
2003 | if (ret) { |
2004 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2005 | goto end; | |
2006 | } | |
2007 | ||
2008 | config_domain_name = get_config_domain_str(domain); | |
2009 | if (!config_domain_name) { | |
2010 | ret = LTTNG_ERR_INVALID; | |
2011 | goto end; | |
2012 | } | |
2013 | ||
28ab034a | 2014 | ret = config_writer_write_element_string(writer, config_element_type, config_domain_name); |
fb198a11 JG |
2015 | if (ret) { |
2016 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2017 | goto end; | |
2018 | } | |
2019 | ||
28ab034a | 2020 | buffer_type_string = get_buffer_type_string(session->ust_session->buffer_type); |
fb198a11 JG |
2021 | if (!buffer_type_string) { |
2022 | ERR("Unsupported buffer type."); | |
2023 | ret = LTTNG_ERR_INVALID; | |
2024 | goto end; | |
2025 | } | |
2026 | ||
28ab034a JG |
2027 | ret = config_writer_write_element_string( |
2028 | writer, config_element_buffer_type, buffer_type_string); | |
fb198a11 JG |
2029 | if (ret) { |
2030 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2031 | goto end; | |
2032 | } | |
2033 | ||
2034 | ret = config_writer_open_element(writer, config_element_channels); | |
2035 | if (ret) { | |
2036 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2037 | goto end; | |
2038 | } | |
2039 | ||
56047f5a JG |
2040 | { |
2041 | lttng::urcu::read_lock_guard read_lock; | |
2042 | ||
2043 | cds_lfht_for_each_entry ( | |
2044 | session->ust_session->domain_global.channels->ht, &iter.iter, node, node) { | |
2045 | ust_chan = lttng::utils::container_of(node, <t_ust_channel::node); | |
2046 | if (domain == ust_chan->domain) { | |
2047 | ret = save_ust_channel(writer, ust_chan, session->ust_session); | |
2048 | if (ret != LTTNG_OK) { | |
2049 | goto end; | |
2050 | } | |
fb198a11 JG |
2051 | } |
2052 | } | |
2053 | } | |
fb198a11 JG |
2054 | |
2055 | /* /channels */ | |
2056 | ret = config_writer_close_element(writer); | |
2057 | if (ret) { | |
2058 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2059 | goto end; | |
2060 | } | |
51755dc8 | 2061 | |
e8fcabef | 2062 | if (domain == LTTNG_DOMAIN_UST) { |
28ab034a | 2063 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2064 | if (ret) { |
2065 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2066 | goto end; | |
2067 | } | |
2068 | ||
28ab034a | 2069 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2070 | if (ret != LTTNG_OK) { |
847a5916 JR |
2071 | goto end; |
2072 | } | |
2073 | ||
e8fcabef | 2074 | /* /trackers */ |
847a5916 JR |
2075 | ret = config_writer_close_element(writer); |
2076 | if (ret) { | |
55c9e7ca | 2077 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2078 | goto end; |
2079 | } | |
e8fcabef | 2080 | } |
847a5916 | 2081 | |
e8fcabef JG |
2082 | /* /domain */ |
2083 | ret = config_writer_close_element(writer); | |
2084 | if (ret) { | |
2085 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2086 | goto end; | |
847a5916 | 2087 | } |
e8fcabef | 2088 | |
55c9e7ca | 2089 | ret = LTTNG_OK; |
847a5916 | 2090 | end: |
847a5916 JR |
2091 | return ret; |
2092 | } | |
2093 | ||
55c9e7ca | 2094 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2095 | static int save_domains(struct config_writer *writer, struct ltt_session *session) |
fb198a11 | 2096 | { |
55c9e7ca | 2097 | int ret = LTTNG_OK; |
fb198a11 | 2098 | |
a0377dfe FD |
2099 | LTTNG_ASSERT(writer); |
2100 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2101 | |
2102 | if (!session->kernel_session && !session->ust_session) { | |
2103 | goto end; | |
2104 | } | |
2105 | ||
2106 | ret = config_writer_open_element(writer, config_element_domains); | |
2107 | if (ret) { | |
2108 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2109 | goto end; | |
2110 | } | |
2111 | ||
fb198a11 | 2112 | if (session->kernel_session) { |
28ab034a | 2113 | ret = config_writer_open_element(writer, config_element_domain); |
fb198a11 JG |
2114 | if (ret) { |
2115 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2116 | goto end; | |
2117 | } | |
2118 | ||
2119 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2120 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2121 | goto end; |
2122 | } | |
2123 | ||
28ab034a | 2124 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2125 | if (ret) { |
2126 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2127 | goto end; | |
2128 | } | |
2129 | ||
28ab034a | 2130 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_KERNEL); |
55c9e7ca | 2131 | if (ret != LTTNG_OK) { |
847a5916 JR |
2132 | goto end; |
2133 | } | |
2134 | ||
2135 | /* /trackers */ | |
2136 | ret = config_writer_close_element(writer); | |
2137 | if (ret) { | |
2138 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2139 | goto end; | |
2140 | } | |
fb198a11 JG |
2141 | /* /domain */ |
2142 | ret = config_writer_close_element(writer); | |
2143 | if (ret) { | |
2144 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2145 | goto end; | |
2146 | } | |
2147 | } | |
2148 | ||
2149 | if (session->ust_session) { | |
51755dc8 | 2150 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2151 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2152 | goto end; |
2153 | } | |
2154 | ||
51755dc8 | 2155 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2156 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2157 | goto end; |
2158 | } | |
fb198a11 | 2159 | |
51755dc8 | 2160 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2161 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2162 | goto end; |
2163 | } | |
65d72c41 | 2164 | |
51755dc8 | 2165 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2166 | if (ret != LTTNG_OK) { |
51755dc8 | 2167 | goto end; |
fb198a11 JG |
2168 | } |
2169 | } | |
2170 | ||
2171 | /* /domains */ | |
2172 | ret = config_writer_close_element(writer); | |
2173 | if (ret) { | |
2174 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2175 | goto end; | |
2176 | } | |
55c9e7ca JR |
2177 | |
2178 | ret = LTTNG_OK; | |
fb198a11 JG |
2179 | end: |
2180 | return ret; | |
2181 | } | |
2182 | ||
55c9e7ca | 2183 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2184 | static int save_consumer_output(struct config_writer *writer, struct consumer_output *output) |
fb198a11 JG |
2185 | { |
2186 | int ret; | |
2187 | ||
a0377dfe FD |
2188 | LTTNG_ASSERT(writer); |
2189 | LTTNG_ASSERT(output); | |
fb198a11 JG |
2190 | |
2191 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2192 | if (ret) { | |
2193 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2194 | goto end; | |
2195 | } | |
2196 | ||
28ab034a | 2197 | ret = config_writer_write_element_bool(writer, config_element_enabled, output->enabled); |
fb198a11 JG |
2198 | if (ret) { |
2199 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2200 | goto end; | |
2201 | } | |
2202 | ||
2203 | ret = config_writer_open_element(writer, config_element_destination); | |
2204 | if (ret) { | |
2205 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2206 | goto end; | |
2207 | } | |
2208 | ||
2209 | switch (output->type) { | |
2210 | case CONSUMER_DST_LOCAL: | |
28ab034a JG |
2211 | ret = config_writer_write_element_string( |
2212 | writer, config_element_path, output->dst.session_root_path); | |
fb198a11 JG |
2213 | if (ret) { |
2214 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2215 | goto end; | |
2216 | } | |
2217 | break; | |
2218 | case CONSUMER_DST_NET: | |
2219 | { | |
2220 | char *uri; | |
2221 | ||
64803277 | 2222 | uri = calloc<char>(PATH_MAX); |
fb198a11 JG |
2223 | if (!uri) { |
2224 | ret = LTTNG_ERR_NOMEM; | |
2225 | goto end; | |
2226 | } | |
2227 | ||
2228 | ret = config_writer_open_element(writer, config_element_net_output); | |
2229 | if (ret) { | |
2230 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2231 | goto end_net_output; | |
2232 | } | |
2233 | ||
28ab034a | 2234 | if (output->dst.net.control_isset && output->dst.net.data_isset) { |
fb198a11 JG |
2235 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); |
2236 | if (ret < 0) { | |
2237 | ret = LTTNG_ERR_INVALID; | |
2238 | goto end_net_output; | |
2239 | } | |
2240 | ||
28ab034a JG |
2241 | ret = config_writer_write_element_string( |
2242 | writer, config_element_control_uri, uri); | |
fb198a11 JG |
2243 | if (ret) { |
2244 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2245 | goto end_net_output; | |
2246 | } | |
2247 | ||
2248 | ret = uri_to_str_url(&output->dst.net.data, uri, PATH_MAX); | |
2249 | if (ret < 0) { | |
2250 | ret = LTTNG_ERR_INVALID; | |
2251 | goto end_net_output; | |
2252 | } | |
2253 | ||
28ab034a JG |
2254 | ret = config_writer_write_element_string( |
2255 | writer, config_element_data_uri, uri); | |
fb198a11 JG |
2256 | if (ret) { |
2257 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2258 | goto end_net_output; | |
2259 | } | |
55c9e7ca | 2260 | ret = LTTNG_OK; |
28ab034a | 2261 | end_net_output: |
fb198a11 | 2262 | free(uri); |
55c9e7ca | 2263 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2264 | goto end; |
2265 | } | |
2266 | } else { | |
28ab034a JG |
2267 | ret = !output->dst.net.control_isset ? LTTNG_ERR_URL_CTRL_MISS : |
2268 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2269 | free(uri); |
fb198a11 JG |
2270 | goto end; |
2271 | } | |
2272 | ||
2273 | ret = config_writer_close_element(writer); | |
2274 | if (ret) { | |
2275 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2276 | goto end; | |
2277 | } | |
2278 | break; | |
2279 | } | |
2280 | default: | |
2281 | ERR("Unsupported consumer output type."); | |
2282 | ret = LTTNG_ERR_INVALID; | |
2283 | goto end; | |
2284 | } | |
2285 | ||
2286 | /* /destination */ | |
2287 | ret = config_writer_close_element(writer); | |
2288 | if (ret) { | |
2289 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2290 | goto end; | |
2291 | } | |
2292 | ||
2293 | /* /consumer_output */ | |
2294 | ret = config_writer_close_element(writer); | |
2295 | if (ret) { | |
2296 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2297 | goto end; | |
2298 | } | |
55c9e7ca JR |
2299 | |
2300 | ret = LTTNG_OK; | |
fb198a11 JG |
2301 | end: |
2302 | return ret; | |
2303 | } | |
2304 | ||
55c9e7ca | 2305 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2306 | static int save_snapshot_outputs(struct config_writer *writer, struct snapshot *snapshot) |
fb198a11 JG |
2307 | { |
2308 | int ret; | |
2309 | struct lttng_ht_iter iter; | |
2310 | struct snapshot_output *output; | |
2311 | ||
a0377dfe FD |
2312 | LTTNG_ASSERT(writer); |
2313 | LTTNG_ASSERT(snapshot); | |
fb198a11 JG |
2314 | |
2315 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2316 | if (ret) { | |
2317 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2318 | goto end; | |
2319 | } | |
2320 | ||
56047f5a JG |
2321 | { |
2322 | lttng::urcu::read_lock_guard read_lock; | |
fb198a11 | 2323 | |
56047f5a JG |
2324 | cds_lfht_for_each_entry (snapshot->output_ht->ht, &iter.iter, output, node.node) { |
2325 | ret = config_writer_open_element(writer, config_element_output); | |
2326 | if (ret) { | |
2327 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2328 | goto end_unlock; | |
2329 | } | |
fb198a11 | 2330 | |
56047f5a JG |
2331 | ret = config_writer_write_element_string( |
2332 | writer, config_element_name, output->name); | |
2333 | if (ret) { | |
2334 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2335 | goto end_unlock; | |
2336 | } | |
fb198a11 | 2337 | |
56047f5a JG |
2338 | ret = config_writer_write_element_unsigned_int( |
2339 | writer, config_element_max_size, output->max_size); | |
2340 | if (ret) { | |
2341 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2342 | goto end_unlock; | |
2343 | } | |
fb198a11 | 2344 | |
56047f5a JG |
2345 | ret = save_consumer_output(writer, output->consumer); |
2346 | if (ret != LTTNG_OK) { | |
2347 | goto end_unlock; | |
2348 | } | |
2349 | ||
2350 | /* /output */ | |
2351 | ret = config_writer_close_element(writer); | |
2352 | if (ret) { | |
2353 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2354 | goto end_unlock; | |
2355 | } | |
fb198a11 JG |
2356 | } |
2357 | } | |
fb198a11 JG |
2358 | |
2359 | /* /snapshot_outputs */ | |
2360 | ret = config_writer_close_element(writer); | |
2361 | if (ret) { | |
2362 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2363 | goto end; | |
2364 | } | |
2365 | ||
55c9e7ca | 2366 | ret = LTTNG_OK; |
fb198a11 JG |
2367 | end: |
2368 | return ret; | |
2369 | end_unlock: | |
fb198a11 JG |
2370 | return ret; |
2371 | } | |
2372 | ||
55c9e7ca | 2373 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2374 | static int save_session_output(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
2375 | { |
2376 | int ret; | |
2377 | ||
a0377dfe FD |
2378 | LTTNG_ASSERT(writer); |
2379 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2380 | |
2381 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
28ab034a | 2382 | (!session->snapshot_mode && !session->consumer)) { |
fb198a11 | 2383 | /* Session is in no output mode */ |
55c9e7ca | 2384 | ret = LTTNG_OK; |
fb198a11 JG |
2385 | goto end; |
2386 | } | |
2387 | ||
2388 | ret = config_writer_open_element(writer, config_element_output); | |
2389 | if (ret) { | |
2390 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2391 | goto end; | |
2392 | } | |
2393 | ||
2394 | if (session->snapshot_mode) { | |
2395 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2396 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2397 | goto end; |
2398 | } | |
2399 | } else { | |
2400 | if (session->consumer) { | |
2401 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2402 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2403 | goto end; |
2404 | } | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | /* /output */ | |
2409 | ret = config_writer_close_element(writer); | |
2410 | if (ret) { | |
2411 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2412 | goto end; | |
2413 | } | |
55c9e7ca | 2414 | ret = LTTNG_OK; |
fb198a11 JG |
2415 | end: |
2416 | return ret; | |
2417 | } | |
2418 | ||
28ab034a JG |
2419 | static int save_session_rotation_schedule(struct config_writer *writer, |
2420 | enum lttng_rotation_schedule_type type, | |
2421 | uint64_t value) | |
ce6176f2 JG |
2422 | { |
2423 | int ret = 0; | |
2424 | const char *element_name; | |
2425 | const char *value_name; | |
2426 | ||
2427 | switch (type) { | |
2428 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2429 | element_name = config_element_rotation_schedule_periodic; | |
28ab034a | 2430 | value_name = config_element_rotation_schedule_periodic_time_us; |
ce6176f2 JG |
2431 | break; |
2432 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2433 | element_name = config_element_rotation_schedule_size_threshold; | |
28ab034a | 2434 | value_name = config_element_rotation_schedule_size_threshold_bytes; |
ce6176f2 JG |
2435 | break; |
2436 | default: | |
2437 | ret = -1; | |
2438 | goto end; | |
2439 | } | |
2440 | ||
2441 | ret = config_writer_open_element(writer, element_name); | |
2442 | if (ret) { | |
2443 | goto end; | |
2444 | } | |
2445 | ||
28ab034a | 2446 | ret = config_writer_write_element_unsigned_int(writer, value_name, value); |
ce6176f2 JG |
2447 | if (ret) { |
2448 | goto end; | |
2449 | } | |
2450 | ||
2451 | /* Close schedule descriptor element. */ | |
2452 | ret = config_writer_close_element(writer); | |
2453 | if (ret) { | |
2454 | goto end; | |
2455 | } | |
2456 | end: | |
2457 | return ret; | |
2458 | } | |
2459 | ||
28ab034a JG |
2460 | static int save_session_rotation_schedules(struct config_writer *writer, |
2461 | struct ltt_session *session) | |
ce6176f2 JG |
2462 | { |
2463 | int ret; | |
2464 | ||
28ab034a | 2465 | ret = config_writer_open_element(writer, config_element_rotation_schedules); |
f829d17a JG |
2466 | if (ret) { |
2467 | goto end; | |
2468 | } | |
ce6176f2 JG |
2469 | if (session->rotate_timer_period) { |
2470 | ret = save_session_rotation_schedule(writer, | |
28ab034a JG |
2471 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, |
2472 | session->rotate_timer_period); | |
ce6176f2 JG |
2473 | if (ret) { |
2474 | goto close_schedules; | |
2475 | } | |
2476 | } | |
2477 | if (session->rotate_size) { | |
28ab034a JG |
2478 | ret = save_session_rotation_schedule( |
2479 | writer, LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, session->rotate_size); | |
ce6176f2 JG |
2480 | if (ret) { |
2481 | goto close_schedules; | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | close_schedules: | |
2486 | /* Close rotation schedules element. */ | |
2487 | ret = config_writer_close_element(writer); | |
2488 | if (ret) { | |
2489 | goto end; | |
2490 | } | |
2491 | end: | |
2492 | return ret; | |
2493 | } | |
2494 | ||
fb198a11 JG |
2495 | /* |
2496 | * Save the given session. | |
2497 | * | |
55c9e7ca | 2498 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 | 2499 | */ |
28ab034a JG |
2500 | static int save_session(struct ltt_session *session, |
2501 | struct lttng_save_session_attr *attr, | |
2502 | lttng_sock_cred *creds) | |
fb198a11 | 2503 | { |
b45f9ad2 | 2504 | int ret, fd = -1; |
511653c3 | 2505 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 | 2506 | size_t len; |
cd9adb8b | 2507 | struct config_writer *writer = nullptr; |
fb198a11 JG |
2508 | size_t session_name_len; |
2509 | const char *provided_path; | |
f376ad9c | 2510 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 | 2511 | |
a0377dfe FD |
2512 | LTTNG_ASSERT(session); |
2513 | LTTNG_ASSERT(attr); | |
2514 | LTTNG_ASSERT(creds); | |
fb198a11 JG |
2515 | |
2516 | session_name_len = strlen(session->name); | |
95a29ab8 | 2517 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 | 2518 | |
28ab034a | 2519 | if (!session_access_ok(session, LTTNG_SOCK_GET_UID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2520 | ret = LTTNG_ERR_EPERM; |
2521 | goto end; | |
2522 | } | |
2523 | ||
2524 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2525 | if (provided_path) { | |
95a29ab8 | 2526 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2527 | len = strlen(provided_path); |
d2992717 | 2528 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2529 | ret = LTTNG_ERR_SET_URL; |
2530 | goto end; | |
2531 | } | |
511653c3 | 2532 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2533 | } else { |
7e078ad1 | 2534 | ssize_t ret_len; |
28ab034a | 2535 | char *home_dir = utils_get_user_home_dir(LTTNG_SOCK_GET_UID_CRED(creds)); |
fb198a11 JG |
2536 | if (!home_dir) { |
2537 | ret = LTTNG_ERR_SET_URL; | |
2538 | goto end; | |
2539 | } | |
2540 | ||
28ab034a JG |
2541 | ret_len = snprintf(config_file_path, |
2542 | sizeof(config_file_path), | |
2543 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
2544 | home_dir); | |
fb198a11 | 2545 | free(home_dir); |
7e078ad1 | 2546 | if (ret_len < 0) { |
fb198a11 JG |
2547 | PERROR("snprintf save session"); |
2548 | ret = LTTNG_ERR_SET_URL; | |
2549 | goto end; | |
2550 | } | |
7e078ad1 | 2551 | len = ret_len; |
fb198a11 JG |
2552 | } |
2553 | ||
2554 | /* | |
d2992717 DG |
2555 | * Check the path fits in the config file path dst including the '/' |
2556 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2557 | */ |
28ab034a JG |
2558 | if ((len + session_name_len + 2 + sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) > |
2559 | sizeof(config_file_path)) { | |
fb198a11 JG |
2560 | ret = LTTNG_ERR_SET_URL; |
2561 | goto end; | |
2562 | } | |
2563 | ||
28ab034a JG |
2564 | ret = run_as_mkdir_recursive(config_file_path, |
2565 | S_IRWXU | S_IRWXG, | |
2566 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2567 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2568 | if (ret) { |
2569 | ret = LTTNG_ERR_SET_URL; | |
2570 | goto end; | |
2571 | } | |
2572 | ||
d2992717 DG |
2573 | /* |
2574 | * At this point, we know that everything fits in the buffer. Validation | |
2575 | * was done just above. | |
2576 | */ | |
fb198a11 | 2577 | config_file_path[len++] = '/'; |
511653c3 | 2578 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2579 | len += session_name_len; |
2580 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2581 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2582 | config_file_path[len] = '\0'; | |
fb198a11 | 2583 | |
f376ad9c JG |
2584 | if (!attr->overwrite) { |
2585 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2586 | } |
2587 | ||
28ab034a JG |
2588 | fd = run_as_open(config_file_path, |
2589 | file_open_flags, | |
2590 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, | |
2591 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2592 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2593 | if (fd < 0) { |
2594 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2595 | switch (errno) { |
2596 | case EEXIST: | |
2597 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2598 | break; | |
2599 | case EACCES: | |
2600 | ret = LTTNG_ERR_EPERM; | |
2601 | break; | |
2602 | default: | |
2603 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2604 | break; | |
2605 | } | |
fb198a11 JG |
2606 | goto end; |
2607 | } | |
2608 | ||
705bb62f | 2609 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2610 | if (!writer) { |
2611 | ret = LTTNG_ERR_NOMEM; | |
2612 | goto end; | |
2613 | } | |
2614 | ||
2615 | ret = config_writer_open_element(writer, config_element_sessions); | |
2616 | if (ret) { | |
2617 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2618 | goto end; | |
2619 | } | |
2620 | ||
2621 | ret = config_writer_open_element(writer, config_element_session); | |
2622 | if (ret) { | |
2623 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2624 | goto end; | |
2625 | } | |
2626 | ||
28ab034a | 2627 | ret = config_writer_write_element_string(writer, config_element_name, session->name); |
fb198a11 JG |
2628 | if (ret) { |
2629 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2630 | goto end; | |
2631 | } | |
2632 | ||
55c9e7ca | 2633 | if (session->shm_path[0] != '\0') { |
28ab034a JG |
2634 | ret = config_writer_write_element_string( |
2635 | writer, config_element_shared_memory_path, session->shm_path); | |
9e7c9f56 JR |
2636 | if (ret) { |
2637 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2638 | goto end; | |
2639 | } | |
2640 | } | |
2641 | ||
fb198a11 | 2642 | ret = save_domains(writer, session); |
55c9e7ca | 2643 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2644 | goto end; |
2645 | } | |
2646 | ||
28ab034a | 2647 | ret = config_writer_write_element_bool(writer, config_element_started, session->active); |
fb198a11 JG |
2648 | if (ret) { |
2649 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2650 | goto end; | |
2651 | } | |
2652 | ||
28ab034a JG |
2653 | if (session->snapshot_mode || session->live_timer || session->rotate_timer_period || |
2654 | session->rotate_size) { | |
fb198a11 JG |
2655 | ret = config_writer_open_element(writer, config_element_attributes); |
2656 | if (ret) { | |
2657 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2658 | goto end; | |
2659 | } | |
2660 | ||
2661 | if (session->snapshot_mode) { | |
28ab034a JG |
2662 | ret = config_writer_write_element_bool( |
2663 | writer, config_element_snapshot_mode, 1); | |
fb198a11 JG |
2664 | if (ret) { |
2665 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2666 | goto end; | |
2667 | } | |
329f3443 | 2668 | } else if (session->live_timer) { |
28ab034a JG |
2669 | ret = config_writer_write_element_unsigned_int( |
2670 | writer, config_element_live_timer_interval, session->live_timer); | |
fb198a11 JG |
2671 | if (ret) { |
2672 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2673 | goto end; | |
2674 | } | |
2675 | } | |
ce6176f2 | 2676 | if (session->rotate_timer_period || session->rotate_size) { |
28ab034a | 2677 | ret = save_session_rotation_schedules(writer, session); |
329f3443 JD |
2678 | if (ret) { |
2679 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2680 | goto end; | |
2681 | } | |
2682 | } | |
fb198a11 JG |
2683 | |
2684 | /* /attributes */ | |
2685 | ret = config_writer_close_element(writer); | |
2686 | if (ret) { | |
2687 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2688 | goto end; | |
2689 | } | |
2690 | } | |
2691 | ||
2692 | ret = save_session_output(writer, session); | |
55c9e7ca | 2693 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2694 | goto end; |
2695 | } | |
2696 | ||
2697 | /* /session */ | |
2698 | ret = config_writer_close_element(writer); | |
2699 | if (ret) { | |
2700 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2701 | goto end; | |
2702 | } | |
2703 | ||
2704 | /* /sessions */ | |
2705 | ret = config_writer_close_element(writer); | |
2706 | if (ret) { | |
2707 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2708 | goto end; | |
2709 | } | |
55c9e7ca JR |
2710 | |
2711 | ret = LTTNG_OK; | |
fb198a11 JG |
2712 | end: |
2713 | if (writer && config_writer_destroy(writer)) { | |
2714 | /* Preserve the original error code */ | |
55c9e7ca | 2715 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 2716 | } |
55c9e7ca | 2717 | if (ret != LTTNG_OK) { |
fb198a11 | 2718 | /* Delete file in case of error */ |
b45f9ad2 | 2719 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
2720 | PERROR("Unlinking XML session configuration."); |
2721 | } | |
2722 | } | |
2723 | ||
b45f9ad2 | 2724 | if (fd >= 0) { |
55c9e7ca JR |
2725 | int closeret; |
2726 | ||
2727 | closeret = close(fd); | |
2728 | if (closeret) { | |
1d12100d JR |
2729 | PERROR("Closing XML session configuration"); |
2730 | } | |
2731 | } | |
2732 | ||
fb198a11 JG |
2733 | return ret; |
2734 | } | |
2735 | ||
28ab034a | 2736 | int cmd_save_sessions(struct lttng_save_session_attr *attr, lttng_sock_cred *creds) |
fb198a11 JG |
2737 | { |
2738 | int ret; | |
2739 | const char *session_name; | |
2740 | struct ltt_session *session; | |
2741 | ||
2742 | session_lock_list(); | |
2743 | ||
2744 | session_name = lttng_save_session_attr_get_session_name(attr); | |
2745 | if (session_name) { | |
2746 | session = session_find_by_name(session_name); | |
2747 | if (!session) { | |
2748 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
2749 | goto end; | |
2750 | } | |
2751 | ||
2752 | session_lock(session); | |
2753 | ret = save_session(session, attr, creds); | |
2754 | session_unlock(session); | |
e32d7f27 | 2755 | session_put(session); |
55c9e7ca | 2756 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2757 | goto end; |
2758 | } | |
2759 | } else { | |
2760 | struct ltt_session_list *list = session_get_list(); | |
2761 | ||
28ab034a | 2762 | cds_list_for_each_entry (session, &list->head, list) { |
e32d7f27 JG |
2763 | if (!session_get(session)) { |
2764 | continue; | |
2765 | } | |
fb198a11 JG |
2766 | session_lock(session); |
2767 | ret = save_session(session, attr, creds); | |
2768 | session_unlock(session); | |
e32d7f27 | 2769 | session_put(session); |
fb198a11 | 2770 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 2771 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
2772 | goto end; |
2773 | } | |
2774 | } | |
2775 | } | |
2776 | ret = LTTNG_OK; | |
2777 | ||
2778 | end: | |
2779 | session_unlock_list(); | |
2780 | return ret; | |
2781 | } |