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> |
28ab034a JG |
20 | #include <common/utils.hpp> |
21 | ||
c9e313bc | 22 | #include <lttng/save-internal.hpp> |
fb198a11 | 23 | |
28ab034a JG |
24 | #include <inttypes.h> |
25 | #include <string.h> | |
26 | #include <unistd.h> | |
27 | #include <urcu/uatomic.h> | |
fb198a11 | 28 | |
55c9e7ca | 29 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
30 | static int save_kernel_channel_attributes(struct config_writer *writer, |
31 | struct lttng_channel_attr *attr) | |
fb198a11 JG |
32 | { |
33 | int ret; | |
34 | ||
35 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
36 | config_element_overwrite_mode, |
37 | attr->overwrite ? config_overwrite_mode_overwrite : | |
38 | config_overwrite_mode_discard); | |
fb198a11 | 39 | if (ret) { |
55c9e7ca | 40 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
41 | goto end; |
42 | } | |
43 | ||
28ab034a JG |
44 | ret = config_writer_write_element_unsigned_int( |
45 | writer, config_element_subbuf_size, attr->subbuf_size); | |
fb198a11 | 46 | if (ret) { |
55c9e7ca | 47 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
48 | goto end; |
49 | } | |
50 | ||
28ab034a JG |
51 | ret = config_writer_write_element_unsigned_int( |
52 | writer, config_element_num_subbuf, attr->num_subbuf); | |
fb198a11 | 53 | if (ret) { |
55c9e7ca | 54 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
55 | goto end; |
56 | } | |
57 | ||
28ab034a JG |
58 | ret = config_writer_write_element_unsigned_int( |
59 | writer, config_element_switch_timer_interval, attr->switch_timer_interval); | |
fb198a11 | 60 | if (ret) { |
55c9e7ca | 61 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
62 | goto end; |
63 | } | |
64 | ||
28ab034a JG |
65 | ret = config_writer_write_element_unsigned_int( |
66 | writer, config_element_read_timer_interval, attr->read_timer_interval); | |
fb198a11 | 67 | if (ret) { |
55c9e7ca | 68 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
69 | goto end; |
70 | } | |
71 | ||
72 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
73 | config_element_output_type, |
74 | attr->output == LTTNG_EVENT_SPLICE ? | |
75 | config_output_type_splice : | |
76 | config_output_type_mmap); | |
fb198a11 | 77 | if (ret) { |
55c9e7ca | 78 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
79 | goto end; |
80 | } | |
81 | ||
28ab034a JG |
82 | ret = config_writer_write_element_unsigned_int( |
83 | writer, config_element_tracefile_size, attr->tracefile_size); | |
fb198a11 | 84 | if (ret) { |
55c9e7ca | 85 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
86 | goto end; |
87 | } | |
88 | ||
28ab034a JG |
89 | ret = config_writer_write_element_unsigned_int( |
90 | writer, config_element_tracefile_count, attr->tracefile_count); | |
fb198a11 | 91 | if (ret) { |
55c9e7ca | 92 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
93 | goto end; |
94 | } | |
95 | ||
28ab034a JG |
96 | ret = config_writer_write_element_unsigned_int( |
97 | writer, config_element_live_timer_interval, attr->live_timer_interval); | |
fb198a11 | 98 | if (ret) { |
55c9e7ca | 99 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
100 | goto end; |
101 | } | |
4fc2b126 JR |
102 | |
103 | if (attr->extended.ptr) { | |
cd9adb8b | 104 | struct lttng_channel_extended *ext = nullptr; |
4fc2b126 JR |
105 | |
106 | ext = (struct lttng_channel_extended *) attr->extended.ptr; | |
28ab034a JG |
107 | ret = config_writer_write_element_unsigned_int( |
108 | writer, config_element_monitor_timer_interval, ext->monitor_timer_interval); | |
4fc2b126 | 109 | if (ret) { |
55c9e7ca | 110 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
111 | goto end; |
112 | } | |
275472aa | 113 | |
28ab034a JG |
114 | ret = config_writer_write_element_signed_int( |
115 | writer, config_element_blocking_timeout, ext->blocking_timeout); | |
275472aa | 116 | if (ret) { |
55c9e7ca | 117 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
118 | goto end; |
119 | } | |
4fc2b126 JR |
120 | } |
121 | ||
55c9e7ca | 122 | ret = LTTNG_OK; |
fb198a11 | 123 | end: |
55c9e7ca | 124 | return ret; |
fb198a11 JG |
125 | } |
126 | ||
55c9e7ca | 127 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
128 | static int save_ust_channel_attributes(struct config_writer *writer, |
129 | struct lttng_ust_abi_channel_attr *attr) | |
fb198a11 JG |
130 | { |
131 | int ret; | |
cd9adb8b | 132 | struct ltt_ust_channel *channel = nullptr; |
fb198a11 JG |
133 | |
134 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
135 | config_element_overwrite_mode, |
136 | attr->overwrite ? config_overwrite_mode_overwrite : | |
137 | config_overwrite_mode_discard); | |
fb198a11 | 138 | if (ret) { |
55c9e7ca | 139 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
140 | goto end; |
141 | } | |
142 | ||
28ab034a JG |
143 | ret = config_writer_write_element_unsigned_int( |
144 | writer, config_element_subbuf_size, attr->subbuf_size); | |
fb198a11 | 145 | if (ret) { |
55c9e7ca | 146 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
147 | goto end; |
148 | } | |
149 | ||
28ab034a JG |
150 | ret = config_writer_write_element_unsigned_int( |
151 | writer, config_element_num_subbuf, attr->num_subbuf); | |
fb198a11 | 152 | if (ret) { |
55c9e7ca | 153 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
154 | goto end; |
155 | } | |
156 | ||
28ab034a JG |
157 | ret = config_writer_write_element_unsigned_int( |
158 | writer, config_element_switch_timer_interval, attr->switch_timer_interval); | |
fb198a11 | 159 | if (ret) { |
55c9e7ca | 160 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
161 | goto end; |
162 | } | |
163 | ||
28ab034a JG |
164 | ret = config_writer_write_element_unsigned_int( |
165 | writer, config_element_read_timer_interval, attr->read_timer_interval); | |
fb198a11 | 166 | if (ret) { |
55c9e7ca | 167 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
168 | goto end; |
169 | } | |
170 | ||
171 | ret = config_writer_write_element_string(writer, | |
28ab034a JG |
172 | config_element_output_type, |
173 | attr->output == LTTNG_UST_ABI_MMAP ? | |
174 | config_output_type_mmap : | |
175 | config_output_type_splice); | |
fb198a11 | 176 | if (ret) { |
55c9e7ca | 177 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 JG |
178 | goto end; |
179 | } | |
4fc2b126 | 180 | |
28ab034a JG |
181 | ret = config_writer_write_element_signed_int( |
182 | writer, config_element_blocking_timeout, attr->u.s.blocking_timeout); | |
275472aa | 183 | if (ret) { |
55c9e7ca | 184 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
275472aa JR |
185 | goto end; |
186 | } | |
187 | ||
4fc2b126 JR |
188 | /* |
189 | * Fetch the monitor timer which is located in the parent of | |
190 | * lttng_ust_channel_attr | |
191 | */ | |
0114db0e | 192 | channel = lttng::utils::container_of(attr, <t_ust_channel::attr); |
28ab034a JG |
193 | ret = config_writer_write_element_unsigned_int( |
194 | writer, config_element_monitor_timer_interval, channel->monitor_timer_interval); | |
4fc2b126 | 195 | if (ret) { |
55c9e7ca | 196 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
4fc2b126 JR |
197 | goto end; |
198 | } | |
199 | ||
55c9e7ca | 200 | ret = LTTNG_OK; |
fb198a11 | 201 | end: |
55c9e7ca | 202 | return ret; |
fb198a11 JG |
203 | } |
204 | ||
28ab034a JG |
205 | static const char * |
206 | get_kernel_instrumentation_string(enum lttng_kernel_abi_instrumentation instrumentation) | |
fb198a11 JG |
207 | { |
208 | const char *instrumentation_string; | |
209 | ||
210 | switch (instrumentation) { | |
b8e2fb80 | 211 | case LTTNG_KERNEL_ABI_ALL: |
fb198a11 JG |
212 | instrumentation_string = config_event_type_all; |
213 | break; | |
b8e2fb80 | 214 | case LTTNG_KERNEL_ABI_TRACEPOINT: |
fb198a11 JG |
215 | instrumentation_string = config_event_type_tracepoint; |
216 | break; | |
b8e2fb80 | 217 | case LTTNG_KERNEL_ABI_KPROBE: |
9d82c4c2 | 218 | instrumentation_string = config_event_type_probe; |
fb198a11 | 219 | break; |
b8e2fb80 | 220 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
221 | instrumentation_string = config_event_type_userspace_probe; |
222 | break; | |
b8e2fb80 | 223 | case LTTNG_KERNEL_ABI_FUNCTION: |
9d82c4c2 | 224 | instrumentation_string = config_event_type_function_entry; |
fb198a11 | 225 | break; |
b8e2fb80 | 226 | case LTTNG_KERNEL_ABI_KRETPROBE: |
9d82c4c2 | 227 | instrumentation_string = config_event_type_function; |
fb198a11 | 228 | break; |
b8e2fb80 | 229 | case LTTNG_KERNEL_ABI_NOOP: |
fb198a11 JG |
230 | instrumentation_string = config_event_type_noop; |
231 | break; | |
b8e2fb80 | 232 | case LTTNG_KERNEL_ABI_SYSCALL: |
fb198a11 JG |
233 | instrumentation_string = config_event_type_syscall; |
234 | break; | |
235 | default: | |
cd9adb8b | 236 | instrumentation_string = nullptr; |
fb198a11 JG |
237 | } |
238 | ||
239 | return instrumentation_string; | |
240 | } | |
241 | ||
28ab034a | 242 | static const char *get_kernel_context_type_string(enum lttng_kernel_abi_context_type context_type) |
fb198a11 JG |
243 | { |
244 | const char *context_type_string; | |
245 | ||
246 | switch (context_type) { | |
b8e2fb80 | 247 | case LTTNG_KERNEL_ABI_CONTEXT_PID: |
fb198a11 JG |
248 | context_type_string = config_event_context_pid; |
249 | break; | |
b8e2fb80 | 250 | case LTTNG_KERNEL_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
251 | context_type_string = config_event_context_procname; |
252 | break; | |
b8e2fb80 | 253 | case LTTNG_KERNEL_ABI_CONTEXT_PRIO: |
fb198a11 JG |
254 | context_type_string = config_event_context_prio; |
255 | break; | |
b8e2fb80 | 256 | case LTTNG_KERNEL_ABI_CONTEXT_NICE: |
fb198a11 JG |
257 | context_type_string = config_event_context_nice; |
258 | break; | |
b8e2fb80 | 259 | case LTTNG_KERNEL_ABI_CONTEXT_VPID: |
fb198a11 JG |
260 | context_type_string = config_event_context_vpid; |
261 | break; | |
b8e2fb80 | 262 | case LTTNG_KERNEL_ABI_CONTEXT_TID: |
fb198a11 JG |
263 | context_type_string = config_event_context_tid; |
264 | break; | |
b8e2fb80 | 265 | case LTTNG_KERNEL_ABI_CONTEXT_VTID: |
fb198a11 JG |
266 | context_type_string = config_event_context_vtid; |
267 | break; | |
b8e2fb80 | 268 | case LTTNG_KERNEL_ABI_CONTEXT_PPID: |
fb198a11 JG |
269 | context_type_string = config_event_context_ppid; |
270 | break; | |
b8e2fb80 | 271 | case LTTNG_KERNEL_ABI_CONTEXT_VPPID: |
fb198a11 JG |
272 | context_type_string = config_event_context_vppid; |
273 | break; | |
b8e2fb80 | 274 | case LTTNG_KERNEL_ABI_CONTEXT_HOSTNAME: |
fb198a11 JG |
275 | context_type_string = config_event_context_hostname; |
276 | break; | |
b8e2fb80 | 277 | case LTTNG_KERNEL_ABI_CONTEXT_INTERRUPTIBLE: |
1ae5e83e JD |
278 | context_type_string = config_event_context_interruptible; |
279 | break; | |
b8e2fb80 | 280 | case LTTNG_KERNEL_ABI_CONTEXT_PREEMPTIBLE: |
1ae5e83e JD |
281 | context_type_string = config_event_context_preemptible; |
282 | break; | |
b8e2fb80 | 283 | case LTTNG_KERNEL_ABI_CONTEXT_NEED_RESCHEDULE: |
1ae5e83e JD |
284 | context_type_string = config_event_context_need_reschedule; |
285 | break; | |
b8e2fb80 | 286 | case LTTNG_KERNEL_ABI_CONTEXT_MIGRATABLE: |
1ae5e83e JD |
287 | context_type_string = config_event_context_migratable; |
288 | break; | |
b8e2fb80 | 289 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_USER: |
16c4c991 FD |
290 | context_type_string = config_event_context_callstack_user; |
291 | break; | |
b8e2fb80 | 292 | case LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_KERNEL: |
16c4c991 FD |
293 | context_type_string = config_event_context_callstack_kernel; |
294 | break; | |
b8e2fb80 | 295 | case LTTNG_KERNEL_ABI_CONTEXT_CGROUP_NS: |
40e14884 MJ |
296 | context_type_string = config_event_context_cgroup_ns; |
297 | break; | |
b8e2fb80 | 298 | case LTTNG_KERNEL_ABI_CONTEXT_IPC_NS: |
40e14884 MJ |
299 | context_type_string = config_event_context_ipc_ns; |
300 | break; | |
b8e2fb80 | 301 | case LTTNG_KERNEL_ABI_CONTEXT_MNT_NS: |
40e14884 MJ |
302 | context_type_string = config_event_context_mnt_ns; |
303 | break; | |
b8e2fb80 | 304 | case LTTNG_KERNEL_ABI_CONTEXT_NET_NS: |
40e14884 MJ |
305 | context_type_string = config_event_context_net_ns; |
306 | break; | |
b8e2fb80 | 307 | case LTTNG_KERNEL_ABI_CONTEXT_PID_NS: |
40e14884 MJ |
308 | context_type_string = config_event_context_pid_ns; |
309 | break; | |
b8e2fb80 | 310 | case LTTNG_KERNEL_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
311 | context_type_string = config_event_context_time_ns; |
312 | break; | |
b8e2fb80 | 313 | case LTTNG_KERNEL_ABI_CONTEXT_USER_NS: |
40e14884 MJ |
314 | context_type_string = config_event_context_user_ns; |
315 | break; | |
b8e2fb80 | 316 | case LTTNG_KERNEL_ABI_CONTEXT_UTS_NS: |
40e14884 MJ |
317 | context_type_string = config_event_context_uts_ns; |
318 | break; | |
b8e2fb80 | 319 | case LTTNG_KERNEL_ABI_CONTEXT_UID: |
499cbfa1 MJ |
320 | context_type_string = config_event_context_uid; |
321 | break; | |
b8e2fb80 | 322 | case LTTNG_KERNEL_ABI_CONTEXT_EUID: |
499cbfa1 MJ |
323 | context_type_string = config_event_context_euid; |
324 | break; | |
b8e2fb80 | 325 | case LTTNG_KERNEL_ABI_CONTEXT_SUID: |
499cbfa1 MJ |
326 | context_type_string = config_event_context_suid; |
327 | break; | |
b8e2fb80 | 328 | case LTTNG_KERNEL_ABI_CONTEXT_GID: |
499cbfa1 MJ |
329 | context_type_string = config_event_context_gid; |
330 | break; | |
b8e2fb80 | 331 | case LTTNG_KERNEL_ABI_CONTEXT_EGID: |
499cbfa1 MJ |
332 | context_type_string = config_event_context_egid; |
333 | break; | |
b8e2fb80 | 334 | case LTTNG_KERNEL_ABI_CONTEXT_SGID: |
499cbfa1 MJ |
335 | context_type_string = config_event_context_sgid; |
336 | break; | |
b8e2fb80 | 337 | case LTTNG_KERNEL_ABI_CONTEXT_VUID: |
499cbfa1 MJ |
338 | context_type_string = config_event_context_vuid; |
339 | break; | |
b8e2fb80 | 340 | case LTTNG_KERNEL_ABI_CONTEXT_VEUID: |
499cbfa1 MJ |
341 | context_type_string = config_event_context_veuid; |
342 | break; | |
b8e2fb80 | 343 | case LTTNG_KERNEL_ABI_CONTEXT_VSUID: |
499cbfa1 MJ |
344 | context_type_string = config_event_context_vsuid; |
345 | break; | |
b8e2fb80 | 346 | case LTTNG_KERNEL_ABI_CONTEXT_VGID: |
499cbfa1 MJ |
347 | context_type_string = config_event_context_vgid; |
348 | break; | |
b8e2fb80 | 349 | case LTTNG_KERNEL_ABI_CONTEXT_VEGID: |
499cbfa1 MJ |
350 | context_type_string = config_event_context_vegid; |
351 | break; | |
b8e2fb80 | 352 | case LTTNG_KERNEL_ABI_CONTEXT_VSGID: |
499cbfa1 MJ |
353 | context_type_string = config_event_context_vsgid; |
354 | break; | |
fb198a11 | 355 | default: |
cd9adb8b | 356 | context_type_string = nullptr; |
fb198a11 JG |
357 | } |
358 | ||
359 | return context_type_string; | |
360 | } | |
361 | ||
28ab034a | 362 | static const char *get_ust_context_type_string(enum lttng_ust_abi_context_type context_type) |
fb198a11 JG |
363 | { |
364 | const char *context_type_string; | |
365 | ||
366 | switch (context_type) { | |
fc4b93fa | 367 | case LTTNG_UST_ABI_CONTEXT_PROCNAME: |
fb198a11 JG |
368 | context_type_string = config_event_context_procname; |
369 | break; | |
fc4b93fa | 370 | case LTTNG_UST_ABI_CONTEXT_VPID: |
fb198a11 JG |
371 | context_type_string = config_event_context_vpid; |
372 | break; | |
fc4b93fa | 373 | case LTTNG_UST_ABI_CONTEXT_VTID: |
fb198a11 JG |
374 | context_type_string = config_event_context_vtid; |
375 | break; | |
fc4b93fa | 376 | case LTTNG_UST_ABI_CONTEXT_IP: |
fb198a11 JG |
377 | context_type_string = config_event_context_ip; |
378 | break; | |
fc4b93fa | 379 | case LTTNG_UST_ABI_CONTEXT_PTHREAD_ID: |
fb198a11 JG |
380 | context_type_string = config_event_context_pthread_id; |
381 | break; | |
fc4b93fa | 382 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
383 | context_type_string = config_event_context_app; |
384 | break; | |
fc4b93fa | 385 | case LTTNG_UST_ABI_CONTEXT_CGROUP_NS: |
f17b8732 MJ |
386 | context_type_string = config_event_context_cgroup_ns; |
387 | break; | |
fc4b93fa | 388 | case LTTNG_UST_ABI_CONTEXT_IPC_NS: |
f17b8732 MJ |
389 | context_type_string = config_event_context_ipc_ns; |
390 | break; | |
fc4b93fa | 391 | case LTTNG_UST_ABI_CONTEXT_MNT_NS: |
f17b8732 MJ |
392 | context_type_string = config_event_context_mnt_ns; |
393 | break; | |
fc4b93fa | 394 | case LTTNG_UST_ABI_CONTEXT_NET_NS: |
f17b8732 MJ |
395 | context_type_string = config_event_context_net_ns; |
396 | break; | |
fc4b93fa | 397 | case LTTNG_UST_ABI_CONTEXT_TIME_NS: |
d37ac3cd MJ |
398 | context_type_string = config_event_context_time_ns; |
399 | break; | |
fc4b93fa | 400 | case LTTNG_UST_ABI_CONTEXT_PID_NS: |
f17b8732 MJ |
401 | context_type_string = config_event_context_pid_ns; |
402 | break; | |
fc4b93fa | 403 | case LTTNG_UST_ABI_CONTEXT_USER_NS: |
f17b8732 MJ |
404 | context_type_string = config_event_context_user_ns; |
405 | break; | |
fc4b93fa | 406 | case LTTNG_UST_ABI_CONTEXT_UTS_NS: |
f17b8732 MJ |
407 | context_type_string = config_event_context_uts_ns; |
408 | break; | |
fc4b93fa | 409 | case LTTNG_UST_ABI_CONTEXT_VUID: |
4fc59cb8 MJ |
410 | context_type_string = config_event_context_vuid; |
411 | break; | |
fc4b93fa | 412 | case LTTNG_UST_ABI_CONTEXT_VEUID: |
4fc59cb8 MJ |
413 | context_type_string = config_event_context_veuid; |
414 | break; | |
fc4b93fa | 415 | case LTTNG_UST_ABI_CONTEXT_VSUID: |
4fc59cb8 MJ |
416 | context_type_string = config_event_context_vsuid; |
417 | break; | |
fc4b93fa | 418 | case LTTNG_UST_ABI_CONTEXT_VGID: |
4fc59cb8 MJ |
419 | context_type_string = config_event_context_vgid; |
420 | break; | |
fc4b93fa | 421 | case LTTNG_UST_ABI_CONTEXT_VEGID: |
4fc59cb8 MJ |
422 | context_type_string = config_event_context_vegid; |
423 | break; | |
fc4b93fa | 424 | case LTTNG_UST_ABI_CONTEXT_VSGID: |
4fc59cb8 MJ |
425 | context_type_string = config_event_context_vsgid; |
426 | break; | |
fc4b93fa | 427 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
14ce5bd8 JG |
428 | /* |
429 | * Error, should not be stored in the XML, perf contexts | |
430 | * are stored as a node of type event_perf_context_type. | |
431 | */ | |
fb198a11 | 432 | default: |
cd9adb8b | 433 | context_type_string = nullptr; |
e885a367 | 434 | break; |
fb198a11 JG |
435 | } |
436 | ||
437 | return context_type_string; | |
438 | } | |
439 | ||
28ab034a | 440 | static const char *get_buffer_type_string(enum lttng_buffer_type buffer_type) |
fb198a11 JG |
441 | { |
442 | const char *buffer_type_string; | |
443 | ||
444 | switch (buffer_type) { | |
445 | case LTTNG_BUFFER_PER_PID: | |
446 | buffer_type_string = config_buffer_type_per_pid; | |
447 | break; | |
448 | case LTTNG_BUFFER_PER_UID: | |
449 | buffer_type_string = config_buffer_type_per_uid; | |
450 | break; | |
451 | case LTTNG_BUFFER_GLOBAL: | |
452 | buffer_type_string = config_buffer_type_global; | |
453 | break; | |
454 | default: | |
cd9adb8b | 455 | buffer_type_string = nullptr; |
fb198a11 JG |
456 | } |
457 | ||
458 | return buffer_type_string; | |
459 | } | |
460 | ||
28ab034a | 461 | static const char *get_loglevel_type_string(enum lttng_ust_abi_loglevel_type loglevel_type) |
fb198a11 JG |
462 | { |
463 | const char *loglevel_type_string; | |
464 | ||
465 | switch (loglevel_type) { | |
fc4b93fa | 466 | case LTTNG_UST_ABI_LOGLEVEL_ALL: |
fb198a11 JG |
467 | loglevel_type_string = config_loglevel_type_all; |
468 | break; | |
fc4b93fa | 469 | case LTTNG_UST_ABI_LOGLEVEL_RANGE: |
fb198a11 JG |
470 | loglevel_type_string = config_loglevel_type_range; |
471 | break; | |
fc4b93fa | 472 | case LTTNG_UST_ABI_LOGLEVEL_SINGLE: |
fb198a11 JG |
473 | loglevel_type_string = config_loglevel_type_single; |
474 | break; | |
475 | default: | |
cd9adb8b | 476 | loglevel_type_string = nullptr; |
fb198a11 JG |
477 | } |
478 | ||
479 | return loglevel_type_string; | |
480 | } | |
481 | ||
55c9e7ca | 482 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 483 | static int save_kernel_function_event(struct config_writer *writer, struct ltt_kernel_event *event) |
83712c39 FD |
484 | { |
485 | int ret; | |
486 | ||
487 | ret = config_writer_open_element(writer, config_element_function_attributes); | |
488 | if (ret) { | |
489 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
490 | goto end; | |
491 | } | |
492 | ||
28ab034a JG |
493 | ret = config_writer_write_element_string( |
494 | writer, config_element_name, event->event->u.ftrace.symbol_name); | |
83712c39 FD |
495 | if (ret) { |
496 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
497 | goto end; | |
498 | } | |
499 | ||
500 | /* /function attributes */ | |
501 | ret = config_writer_close_element(writer); | |
502 | if (ret) { | |
503 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
504 | goto end; | |
505 | } | |
506 | end: | |
507 | return ret; | |
508 | } | |
509 | ||
28ab034a | 510 | static int save_kernel_kprobe_event(struct config_writer *writer, struct ltt_kernel_event *event) |
83712c39 FD |
511 | { |
512 | int ret; | |
513 | const char *symbol_name; | |
514 | uint64_t addr; | |
515 | uint64_t offset; | |
516 | ||
517 | switch (event->event->instrumentation) { | |
b8e2fb80 | 518 | case LTTNG_KERNEL_ABI_KPROBE: |
83712c39 FD |
519 | /* |
520 | * Comments in lttng-kernel.h mention that | |
521 | * either addr or symbol_name are set, not both. | |
522 | */ | |
523 | addr = event->event->u.kprobe.addr; | |
524 | offset = event->event->u.kprobe.offset; | |
cd9adb8b | 525 | symbol_name = addr ? nullptr : event->event->u.kprobe.symbol_name; |
83712c39 | 526 | break; |
b8e2fb80 | 527 | case LTTNG_KERNEL_ABI_KRETPROBE: |
83712c39 FD |
528 | addr = event->event->u.kretprobe.addr; |
529 | offset = event->event->u.kretprobe.offset; | |
cd9adb8b | 530 | symbol_name = addr ? nullptr : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
531 | break; |
532 | default: | |
c1e83fb4 FD |
533 | ERR("Unsupported kernel instrumentation type."); |
534 | ret = LTTNG_ERR_INVALID; | |
535 | goto end; | |
83712c39 FD |
536 | } |
537 | ||
538 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
539 | if (ret) { | |
540 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
541 | goto end; | |
542 | } | |
543 | ||
c1e83fb4 | 544 | if (addr) { |
28ab034a JG |
545 | ret = config_writer_write_element_unsigned_int( |
546 | writer, config_element_address, addr); | |
c1e83fb4 FD |
547 | if (ret) { |
548 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
549 | goto end; | |
550 | } | |
551 | } else if (symbol_name) { | |
28ab034a JG |
552 | ret = config_writer_write_element_string( |
553 | writer, config_element_symbol_name, symbol_name); | |
83712c39 FD |
554 | if (ret) { |
555 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
556 | goto end; | |
557 | } | |
c1e83fb4 FD |
558 | /* If the offset is non-zero, write it.*/ |
559 | if (offset) { | |
28ab034a JG |
560 | ret = config_writer_write_element_unsigned_int( |
561 | writer, config_element_offset, offset); | |
c1e83fb4 FD |
562 | if (ret) { |
563 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
564 | goto end; | |
565 | } | |
566 | } | |
567 | } else { | |
568 | /* | |
569 | * This really should not happen as we are either setting the | |
570 | * address or the symbol above. | |
571 | */ | |
572 | ERR("Invalid probe/function description."); | |
573 | ret = LTTNG_ERR_INVALID; | |
574 | goto end; | |
83712c39 FD |
575 | } |
576 | ||
c1e83fb4 FD |
577 | ret = config_writer_close_element(writer); |
578 | if (ret) { | |
579 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
580 | goto end; | |
581 | } | |
582 | end: | |
583 | return ret; | |
584 | } | |
585 | ||
586 | /* | |
587 | * Save the userspace probe tracepoint event associated with the event to the | |
588 | * config writer. | |
589 | */ | |
28ab034a JG |
590 | static int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, |
591 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
592 | { |
593 | int ret = 0; | |
594 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
595 | const struct lttng_userspace_probe_location *userspace_probe_location; |
596 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
597 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
598 | ||
599 | /* Get userspace probe location from the event. */ | |
600 | userspace_probe_location = event->userspace_probe_location; | |
601 | if (!userspace_probe_location) { | |
602 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
603 | goto end; | |
604 | } | |
605 | ||
606 | /* Get lookup method and lookup method type. */ | |
607 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
608 | if (!lookup_method) { | |
609 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
610 | goto end; | |
611 | } | |
612 | ||
613 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
614 | ||
615 | /* Get the binary path, probe name and provider name. */ | |
616 | binary_path = | |
28ab034a | 617 | lttng_userspace_probe_location_tracepoint_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
618 | if (!binary_path) { |
619 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
620 | goto end; | |
621 | } | |
622 | ||
623 | probe_name = | |
28ab034a | 624 | lttng_userspace_probe_location_tracepoint_get_probe_name(userspace_probe_location); |
c1e83fb4 FD |
625 | if (!probe_name) { |
626 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
627 | goto end; | |
628 | } | |
629 | ||
28ab034a JG |
630 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name( |
631 | userspace_probe_location); | |
c1e83fb4 FD |
632 | if (!provider_name) { |
633 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
634 | goto end; | |
635 | } | |
636 | ||
637 | /* Open a userspace probe tracepoint attribute. */ | |
28ab034a JG |
638 | ret = config_writer_open_element(writer, |
639 | config_element_userspace_probe_tracepoint_attributes); | |
c1e83fb4 FD |
640 | if (ret) { |
641 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
642 | goto end; | |
643 | } | |
644 | ||
645 | switch (lookup_type) { | |
646 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
28ab034a JG |
647 | ret = config_writer_write_element_string( |
648 | writer, | |
649 | config_element_userspace_probe_lookup, | |
650 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
651 | if (ret) { |
652 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
653 | goto end; | |
654 | } | |
c1e83fb4 FD |
655 | break; |
656 | default: | |
657 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
658 | ret = LTTNG_ERR_INVALID; | |
659 | goto end; | |
83712c39 FD |
660 | } |
661 | ||
c1e83fb4 | 662 | /* Write the binary path, provider name and the probe name. */ |
28ab034a JG |
663 | ret = config_writer_write_element_string( |
664 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
665 | if (ret) { |
666 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
667 | goto end; | |
668 | } | |
669 | ||
28ab034a JG |
670 | ret = config_writer_write_element_string( |
671 | writer, | |
672 | config_element_userspace_probe_tracepoint_location_provider_name, | |
673 | provider_name); | |
c1e83fb4 FD |
674 | if (ret) { |
675 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
676 | goto end; | |
677 | } | |
678 | ||
28ab034a JG |
679 | ret = config_writer_write_element_string( |
680 | writer, config_element_userspace_probe_tracepoint_location_probe_name, probe_name); | |
c1e83fb4 FD |
681 | if (ret) { |
682 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
683 | goto end; | |
684 | } | |
685 | ||
686 | /* Close the userspace probe tracepoint attribute. */ | |
687 | ret = config_writer_close_element(writer); | |
688 | if (ret) { | |
689 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
690 | goto end; | |
691 | } | |
692 | ||
693 | end: | |
694 | return ret; | |
695 | } | |
696 | ||
697 | /* | |
698 | * Save the userspace probe function event associated with the event to the | |
699 | * config writer. | |
700 | */ | |
28ab034a JG |
701 | static int save_kernel_userspace_probe_function_event(struct config_writer *writer, |
702 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
703 | { |
704 | int ret = 0; | |
705 | const char *function_name, *binary_path; | |
87597c2c JG |
706 | const struct lttng_userspace_probe_location *userspace_probe_location; |
707 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
708 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
709 | ||
710 | /* Get userspace probe location from the event. */ | |
711 | userspace_probe_location = event->userspace_probe_location; | |
712 | if (!userspace_probe_location) { | |
713 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
714 | goto end; | |
715 | } | |
716 | ||
717 | /* Get lookup method and lookup method type. */ | |
28ab034a | 718 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); |
c1e83fb4 FD |
719 | if (!lookup_method) { |
720 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
721 | goto end; | |
722 | } | |
723 | ||
724 | /* Get the binary path and the function name. */ | |
725 | binary_path = | |
28ab034a | 726 | lttng_userspace_probe_location_function_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
727 | if (!binary_path) { |
728 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
729 | goto end; | |
730 | } | |
731 | ||
732 | function_name = | |
28ab034a | 733 | lttng_userspace_probe_location_function_get_function_name(userspace_probe_location); |
c1e83fb4 FD |
734 | if (!function_name) { |
735 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
736 | goto end; | |
737 | } | |
738 | ||
739 | /* Open a userspace probe function attribute. */ | |
740 | ret = config_writer_open_element(writer, | |
28ab034a | 741 | config_element_userspace_probe_function_attributes); |
c1e83fb4 FD |
742 | if (ret) { |
743 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
744 | goto end; | |
745 | } | |
746 | ||
747 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
748 | switch (lookup_type) { | |
749 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
28ab034a JG |
750 | ret = config_writer_write_element_string( |
751 | writer, | |
752 | config_element_userspace_probe_lookup, | |
753 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
754 | if (ret) { |
755 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
756 | goto end; | |
757 | } | |
c1e83fb4 FD |
758 | break; |
759 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
28ab034a JG |
760 | ret = config_writer_write_element_string( |
761 | writer, | |
762 | config_element_userspace_probe_lookup, | |
763 | config_element_userspace_probe_lookup_function_default); | |
c1e83fb4 FD |
764 | if (ret) { |
765 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
766 | goto end; | |
767 | } | |
768 | break; | |
769 | default: | |
770 | ERR("Unsupported kernel userspace probe function lookup method."); | |
771 | ret = LTTNG_ERR_INVALID; | |
772 | goto end; | |
83712c39 FD |
773 | } |
774 | ||
c1e83fb4 | 775 | /* Write the binary path and the function name. */ |
28ab034a JG |
776 | ret = config_writer_write_element_string( |
777 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
778 | if (ret) { |
779 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
780 | goto end; | |
781 | } | |
782 | ||
28ab034a JG |
783 | ret = config_writer_write_element_string( |
784 | writer, | |
785 | config_element_userspace_probe_function_location_function_name, | |
786 | function_name); | |
c1e83fb4 FD |
787 | if (ret) { |
788 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
789 | goto end; | |
790 | } | |
791 | ||
792 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
793 | ret = config_writer_close_element(writer); |
794 | if (ret) { | |
795 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
796 | goto end; | |
797 | } | |
c1e83fb4 | 798 | |
83712c39 FD |
799 | end: |
800 | return ret; | |
801 | } | |
c1e83fb4 | 802 | |
28ab034a JG |
803 | static int save_kernel_userspace_probe_event(struct config_writer *writer, |
804 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
805 | { |
806 | int ret; | |
807 | struct lttng_userspace_probe_location *userspace_probe_location; | |
808 | ||
809 | /* Get userspace probe location from the event. */ | |
810 | userspace_probe_location = event->userspace_probe_location; | |
811 | if (!userspace_probe_location) { | |
812 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
813 | goto end; | |
814 | } | |
815 | ||
28ab034a | 816 | switch (lttng_userspace_probe_location_get_type(userspace_probe_location)) { |
c1e83fb4 FD |
817 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: |
818 | { | |
819 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
820 | if (ret) { | |
821 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
822 | goto end; | |
823 | } | |
824 | break; | |
825 | } | |
826 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
827 | { | |
828 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
829 | if (ret) { | |
830 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
831 | goto end; | |
832 | } | |
833 | break; | |
834 | } | |
835 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
836 | default: | |
837 | ERR("Unsupported kernel userspace probe location type."); | |
838 | ret = LTTNG_ERR_INVALID; | |
839 | goto end; | |
840 | } | |
841 | ||
842 | end: | |
843 | return ret; | |
844 | } | |
845 | ||
28ab034a | 846 | static int save_kernel_event(struct config_writer *writer, struct ltt_kernel_event *event) |
fb198a11 JG |
847 | { |
848 | int ret; | |
849 | const char *instrumentation_type; | |
850 | ||
851 | ret = config_writer_open_element(writer, config_element_event); | |
852 | if (ret) { | |
853 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
854 | goto end; | |
855 | } | |
856 | ||
857 | if (event->event->name[0]) { | |
28ab034a JG |
858 | ret = config_writer_write_element_string( |
859 | writer, config_element_name, event->event->name); | |
fb198a11 JG |
860 | if (ret) { |
861 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
862 | goto end; | |
863 | } | |
864 | } | |
865 | ||
28ab034a | 866 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
867 | if (ret) { |
868 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
869 | goto end; | |
870 | } | |
871 | ||
28ab034a | 872 | instrumentation_type = get_kernel_instrumentation_string(event->event->instrumentation); |
fb198a11 JG |
873 | if (!instrumentation_type) { |
874 | ret = LTTNG_ERR_INVALID; | |
875 | goto end; | |
876 | } | |
877 | ||
28ab034a | 878 | ret = config_writer_write_element_string(writer, config_element_type, instrumentation_type); |
fb198a11 JG |
879 | if (ret) { |
880 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
881 | goto end; | |
882 | } | |
883 | ||
911d1560 | 884 | if (event->filter_expression) { |
28ab034a JG |
885 | ret = config_writer_write_element_string( |
886 | writer, config_element_filter, event->filter_expression); | |
911d1560 JG |
887 | if (ret) { |
888 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
889 | goto end; | |
890 | } | |
891 | } | |
892 | ||
b8e2fb80 | 893 | if (event->event->instrumentation == LTTNG_KERNEL_ABI_FUNCTION || |
28ab034a JG |
894 | event->event->instrumentation == LTTNG_KERNEL_ABI_KPROBE || |
895 | event->event->instrumentation == LTTNG_KERNEL_ABI_UPROBE || | |
896 | event->event->instrumentation == LTTNG_KERNEL_ABI_KRETPROBE) { | |
897 | ret = config_writer_open_element(writer, config_element_attributes); | |
fb198a11 JG |
898 | if (ret) { |
899 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
900 | goto end; | |
901 | } | |
902 | ||
903 | switch (event->event->instrumentation) { | |
b8e2fb80 FD |
904 | case LTTNG_KERNEL_ABI_SYSCALL: |
905 | case LTTNG_KERNEL_ABI_FUNCTION: | |
83712c39 | 906 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 907 | if (ret) { |
fb198a11 JG |
908 | goto end; |
909 | } | |
910 | break; | |
b8e2fb80 FD |
911 | case LTTNG_KERNEL_ABI_KPROBE: |
912 | case LTTNG_KERNEL_ABI_KRETPROBE: | |
83712c39 | 913 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 914 | if (ret) { |
fb198a11 JG |
915 | goto end; |
916 | } | |
917 | break; | |
b8e2fb80 | 918 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
919 | ret = save_kernel_userspace_probe_event(writer, event); |
920 | if (ret) { | |
921 | goto end; | |
922 | } | |
923 | break; | |
fb198a11 JG |
924 | default: |
925 | ERR("Unsupported kernel instrumentation type."); | |
926 | ret = LTTNG_ERR_INVALID; | |
927 | goto end; | |
928 | } | |
929 | ||
930 | /* /attributes */ | |
931 | ret = config_writer_close_element(writer); | |
932 | if (ret) { | |
933 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
934 | goto end; | |
935 | } | |
936 | } | |
937 | ||
938 | /* /event */ | |
939 | ret = config_writer_close_element(writer); | |
940 | if (ret) { | |
941 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
942 | goto end; | |
943 | } | |
55c9e7ca JR |
944 | |
945 | ret = LTTNG_OK; | |
fb198a11 JG |
946 | end: |
947 | return ret; | |
948 | } | |
949 | ||
55c9e7ca | 950 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 951 | static int save_kernel_events(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
952 | { |
953 | int ret; | |
954 | struct ltt_kernel_event *event; | |
955 | ||
956 | ret = config_writer_open_element(writer, config_element_events); | |
957 | if (ret) { | |
958 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
959 | goto end; | |
960 | } | |
961 | ||
28ab034a | 962 | cds_list_for_each_entry (event, &kchan->events_list.head, list) { |
fb198a11 | 963 | ret = save_kernel_event(writer, event); |
55c9e7ca | 964 | if (ret != LTTNG_OK) { |
fb198a11 JG |
965 | goto end; |
966 | } | |
967 | } | |
968 | ||
969 | /* /events */ | |
970 | ret = config_writer_close_element(writer); | |
971 | if (ret) { | |
972 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
973 | goto end; | |
974 | } | |
55c9e7ca JR |
975 | |
976 | ret = LTTNG_OK; | |
fb198a11 JG |
977 | end: |
978 | return ret; | |
979 | } | |
980 | ||
55c9e7ca | 981 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 982 | static int save_ust_event(struct config_writer *writer, struct ltt_ust_event *event) |
fb198a11 JG |
983 | { |
984 | int ret; | |
985 | const char *loglevel_type_string; | |
986 | ||
987 | ret = config_writer_open_element(writer, config_element_event); | |
988 | if (ret) { | |
989 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
990 | goto end; | |
991 | } | |
992 | ||
993 | if (event->attr.name[0]) { | |
28ab034a JG |
994 | ret = config_writer_write_element_string( |
995 | writer, config_element_name, event->attr.name); | |
fb198a11 JG |
996 | if (ret) { |
997 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
998 | goto end; | |
999 | } | |
1000 | } | |
1001 | ||
28ab034a | 1002 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
1003 | if (ret) { |
1004 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1005 | goto end; | |
1006 | } | |
1007 | ||
fc4b93fa | 1008 | if (event->attr.instrumentation != LTTNG_UST_ABI_TRACEPOINT) { |
fb198a11 JG |
1009 | ERR("Unsupported UST instrumentation type."); |
1010 | ret = LTTNG_ERR_INVALID; | |
1011 | goto end; | |
1012 | } | |
28ab034a JG |
1013 | ret = config_writer_write_element_string( |
1014 | writer, config_element_type, config_event_type_tracepoint); | |
fb198a11 JG |
1015 | if (ret) { |
1016 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1017 | goto end; | |
1018 | } | |
1019 | ||
28ab034a JG |
1020 | loglevel_type_string = |
1021 | get_loglevel_type_string((lttng_ust_abi_loglevel_type) event->attr.loglevel_type); | |
fb198a11 JG |
1022 | if (!loglevel_type_string) { |
1023 | ERR("Unsupported UST loglevel type."); | |
1024 | ret = LTTNG_ERR_INVALID; | |
1025 | goto end; | |
1026 | } | |
1027 | ||
28ab034a JG |
1028 | ret = config_writer_write_element_string( |
1029 | writer, config_element_loglevel_type, loglevel_type_string); | |
fb198a11 JG |
1030 | if (ret) { |
1031 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1032 | goto end; | |
1033 | } | |
1034 | ||
1adbdb10 | 1035 | /* The log level is irrelevant if no "filtering" is enabled */ |
fc4b93fa | 1036 | if (event->attr.loglevel_type != LTTNG_UST_ABI_LOGLEVEL_ALL) { |
28ab034a JG |
1037 | ret = config_writer_write_element_signed_int( |
1038 | writer, config_element_loglevel, event->attr.loglevel); | |
1adbdb10 JG |
1039 | if (ret) { |
1040 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1041 | goto end; | |
1042 | } | |
fb198a11 JG |
1043 | } |
1044 | ||
1045 | if (event->filter_expression) { | |
28ab034a JG |
1046 | ret = config_writer_write_element_string( |
1047 | writer, config_element_filter, event->filter_expression); | |
fb198a11 JG |
1048 | if (ret) { |
1049 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1050 | goto end; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | if (event->exclusion && event->exclusion->count) { | |
1055 | uint32_t i; | |
1056 | ||
28ab034a | 1057 | ret = config_writer_open_element(writer, config_element_exclusions); |
fb198a11 JG |
1058 | if (ret) { |
1059 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1060 | goto end; | |
1061 | } | |
1062 | ||
1063 | for (i = 0; i < event->exclusion->count; i++) { | |
28ab034a JG |
1064 | ret = config_writer_write_element_string( |
1065 | writer, | |
fb198a11 | 1066 | config_element_exclusion, |
28ab034a | 1067 | LTTNG_EVENT_EXCLUSION_NAME_AT(event->exclusion, i)); |
fb198a11 JG |
1068 | if (ret) { |
1069 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1070 | goto end; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | /* /exclusions */ | |
1075 | ret = config_writer_close_element(writer); | |
1076 | if (ret) { | |
1077 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1078 | goto end; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | /* /event */ | |
1083 | ret = config_writer_close_element(writer); | |
1084 | if (ret) { | |
1085 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1086 | goto end; | |
1087 | } | |
55c9e7ca JR |
1088 | |
1089 | ret = LTTNG_OK; | |
fb198a11 JG |
1090 | end: |
1091 | return ret; | |
1092 | } | |
1093 | ||
55c9e7ca | 1094 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1095 | static int save_ust_events(struct config_writer *writer, struct lttng_ht *events) |
fb198a11 JG |
1096 | { |
1097 | int ret; | |
1098 | struct ltt_ust_event *event; | |
1099 | struct lttng_ht_node_str *node; | |
1100 | struct lttng_ht_iter iter; | |
1101 | ||
1102 | ret = config_writer_open_element(writer, config_element_events); | |
1103 | if (ret) { | |
1104 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1105 | goto end; | |
1106 | } | |
1107 | ||
1108 | rcu_read_lock(); | |
28ab034a | 1109 | cds_lfht_for_each_entry (events->ht, &iter.iter, node, node) { |
0114db0e | 1110 | event = lttng::utils::container_of(node, <t_ust_event::node); |
fb198a11 | 1111 | |
af325ba1 JG |
1112 | if (event->internal) { |
1113 | /* Internal events must not be exposed to clients */ | |
1114 | continue; | |
1115 | } | |
fb198a11 | 1116 | ret = save_ust_event(writer, event); |
55c9e7ca | 1117 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1118 | rcu_read_unlock(); |
1119 | goto end; | |
1120 | } | |
1121 | } | |
1122 | rcu_read_unlock(); | |
1123 | ||
1124 | /* /events */ | |
1125 | ret = config_writer_close_element(writer); | |
1126 | if (ret) { | |
1127 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1128 | goto end; | |
1129 | } | |
55c9e7ca JR |
1130 | |
1131 | ret = LTTNG_OK; | |
fb198a11 JG |
1132 | end: |
1133 | return ret; | |
1134 | } | |
1135 | ||
55c9e7ca | 1136 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1137 | static int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
1138 | struct agent_event *agent_event) | |
51755dc8 | 1139 | { |
55c9e7ca | 1140 | int ret; |
fc4b93fa | 1141 | enum lttng_ust_abi_loglevel_type ust_loglevel_type; |
0b35b846 | 1142 | |
44760c20 | 1143 | ust_event->enabled = AGENT_EVENT_IS_ENABLED(agent_event); |
fc4b93fa | 1144 | ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
28ab034a | 1145 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, LTTNG_SYMBOL_NAME_LEN)) { |
55c9e7ca | 1146 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1147 | goto end; |
1148 | } | |
0b35b846 JG |
1149 | switch (agent_event->loglevel_type) { |
1150 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
fc4b93fa | 1151 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
0b35b846 JG |
1152 | break; |
1153 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 1154 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
0b35b846 JG |
1155 | break; |
1156 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
fc4b93fa | 1157 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
0b35b846 JG |
1158 | break; |
1159 | default: | |
1160 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1161 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1162 | goto end; |
1163 | } | |
1164 | ||
1165 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1166 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1167 | ust_event->filter_expression = agent_event->filter_expression; |
1168 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1169 | |
1170 | ret = LTTNG_OK; | |
0b35b846 JG |
1171 | end: |
1172 | return ret; | |
51755dc8 JG |
1173 | } |
1174 | ||
55c9e7ca | 1175 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1176 | static int save_agent_events(struct config_writer *writer, struct agent *agent) |
51755dc8 JG |
1177 | { |
1178 | int ret; | |
1179 | struct lttng_ht_iter iter; | |
1180 | struct lttng_ht_node_str *node; | |
1181 | ||
1182 | ret = config_writer_open_element(writer, config_element_events); | |
1183 | if (ret) { | |
1184 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1185 | goto end; | |
1186 | } | |
1187 | ||
1188 | rcu_read_lock(); | |
28ab034a | 1189 | cds_lfht_for_each_entry (agent->events->ht, &iter.iter, node, node) { |
51755dc8 JG |
1190 | struct agent_event *agent_event; |
1191 | struct ltt_ust_event fake_event; | |
1192 | ||
1193 | memset(&fake_event, 0, sizeof(fake_event)); | |
0114db0e | 1194 | agent_event = lttng::utils::container_of(node, &agent_event::node); |
51755dc8 JG |
1195 | |
1196 | /* | |
1197 | * Initialize a fake ust event to reuse the same serialization | |
1198 | * function since UST and agent events contain the same info | |
1199 | * (and one could wonder why they don't reuse the same | |
1200 | * structures...). | |
1201 | */ | |
0b35b846 | 1202 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); |
55c9e7ca | 1203 | if (ret != LTTNG_OK) { |
0b35b846 JG |
1204 | rcu_read_unlock(); |
1205 | goto end; | |
1206 | } | |
51755dc8 | 1207 | ret = save_ust_event(writer, &fake_event); |
55c9e7ca | 1208 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1209 | rcu_read_unlock(); |
1210 | goto end; | |
1211 | } | |
1212 | } | |
1213 | rcu_read_unlock(); | |
1214 | ||
1215 | /* /events */ | |
1216 | ret = config_writer_close_element(writer); | |
1217 | if (ret) { | |
1218 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1219 | goto end; | |
1220 | } | |
55c9e7ca JR |
1221 | |
1222 | ret = LTTNG_OK; | |
51755dc8 JG |
1223 | end: |
1224 | return ret; | |
1225 | } | |
1226 | ||
55c9e7ca | 1227 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1228 | static int save_kernel_context(struct config_writer *writer, struct lttng_kernel_abi_context *ctx) |
fb198a11 | 1229 | { |
55c9e7ca | 1230 | int ret = LTTNG_OK; |
fb198a11 JG |
1231 | |
1232 | if (!ctx) { | |
1233 | goto end; | |
1234 | } | |
1235 | ||
fb198a11 JG |
1236 | ret = config_writer_open_element(writer, config_element_context); |
1237 | if (ret) { | |
1238 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1239 | goto end; | |
1240 | } | |
1241 | ||
b8e2fb80 | 1242 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
28ab034a | 1243 | ret = config_writer_open_element(writer, config_element_context_perf); |
fb198a11 JG |
1244 | if (ret) { |
1245 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1246 | goto end; | |
1247 | } | |
1248 | ||
28ab034a JG |
1249 | ret = config_writer_write_element_unsigned_int( |
1250 | writer, config_element_type, ctx->u.perf_counter.type); | |
fb198a11 JG |
1251 | if (ret) { |
1252 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1253 | goto end; | |
1254 | } | |
1255 | ||
28ab034a JG |
1256 | ret = config_writer_write_element_unsigned_int( |
1257 | writer, config_element_config, ctx->u.perf_counter.config); | |
fb198a11 JG |
1258 | if (ret) { |
1259 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1260 | goto end; | |
1261 | } | |
1262 | ||
28ab034a JG |
1263 | ret = config_writer_write_element_string( |
1264 | writer, config_element_name, ctx->u.perf_counter.name); | |
fb198a11 JG |
1265 | if (ret) { |
1266 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1267 | goto end; | |
1268 | } | |
1269 | ||
1270 | /* /perf */ | |
1271 | ret = config_writer_close_element(writer); | |
1272 | if (ret) { | |
1273 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1274 | goto end; | |
1275 | } | |
1276 | } else { | |
28ab034a | 1277 | const char *context_type_string = get_kernel_context_type_string(ctx->ctx); |
fb198a11 JG |
1278 | |
1279 | if (!context_type_string) { | |
1280 | ERR("Unsupported kernel context type."); | |
1281 | ret = LTTNG_ERR_INVALID; | |
1282 | goto end; | |
1283 | } | |
1284 | ||
28ab034a JG |
1285 | ret = config_writer_write_element_string( |
1286 | writer, config_element_type, context_type_string); | |
fb198a11 JG |
1287 | if (ret) { |
1288 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1289 | goto end; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* /context */ | |
1294 | ret = config_writer_close_element(writer); | |
1295 | if (ret) { | |
1296 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1297 | goto end; | |
1298 | } | |
1299 | ||
55c9e7ca | 1300 | ret = LTTNG_OK; |
645328ae DG |
1301 | end: |
1302 | return ret; | |
1303 | } | |
1304 | ||
55c9e7ca | 1305 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1306 | static int save_kernel_contexts(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
645328ae DG |
1307 | { |
1308 | int ret; | |
1309 | struct ltt_kernel_context *ctx; | |
1310 | ||
2aa64052 | 1311 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1312 | ret = LTTNG_OK; |
2aa64052 JG |
1313 | goto end; |
1314 | } | |
1315 | ||
645328ae DG |
1316 | ret = config_writer_open_element(writer, config_element_contexts); |
1317 | if (ret) { | |
1318 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1319 | goto end; | |
1320 | } | |
1321 | ||
28ab034a | 1322 | cds_list_for_each_entry (ctx, &kchan->ctx_list, list) { |
645328ae | 1323 | ret = save_kernel_context(writer, &ctx->ctx); |
55c9e7ca | 1324 | if (ret != LTTNG_OK) { |
645328ae DG |
1325 | goto end; |
1326 | } | |
1327 | } | |
1328 | ||
fb198a11 JG |
1329 | /* /contexts */ |
1330 | ret = config_writer_close_element(writer); | |
1331 | if (ret) { | |
1332 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1333 | goto end; | |
1334 | } | |
55c9e7ca JR |
1335 | |
1336 | ret = LTTNG_OK; | |
fb198a11 JG |
1337 | end: |
1338 | return ret; | |
1339 | } | |
1340 | ||
55c9e7ca | 1341 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1342 | static int save_ust_context_perf_thread_counter(struct config_writer *writer, |
1343 | struct ltt_ust_context *ctx) | |
045fc617 JG |
1344 | { |
1345 | int ret; | |
1346 | ||
a0377dfe FD |
1347 | LTTNG_ASSERT(writer); |
1348 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1349 | |
1350 | /* Perf contexts are saved as event_perf_context_type */ | |
1351 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1352 | if (ret) { | |
1353 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1354 | goto end; | |
1355 | } | |
1356 | ||
28ab034a JG |
1357 | ret = config_writer_write_element_unsigned_int( |
1358 | writer, config_element_type, ctx->ctx.u.perf_counter.type); | |
045fc617 JG |
1359 | if (ret) { |
1360 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1361 | goto end; | |
1362 | } | |
1363 | ||
28ab034a JG |
1364 | ret = config_writer_write_element_unsigned_int( |
1365 | writer, config_element_config, ctx->ctx.u.perf_counter.config); | |
045fc617 JG |
1366 | if (ret) { |
1367 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1368 | goto end; | |
1369 | } | |
1370 | ||
28ab034a JG |
1371 | ret = config_writer_write_element_string( |
1372 | writer, config_element_name, ctx->ctx.u.perf_counter.name); | |
045fc617 JG |
1373 | if (ret) { |
1374 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | /* /perf */ | |
1379 | ret = config_writer_close_element(writer); | |
1380 | if (ret) { | |
1381 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1382 | goto end; | |
1383 | } | |
55c9e7ca JR |
1384 | |
1385 | ret = LTTNG_OK; | |
045fc617 JG |
1386 | end: |
1387 | return ret; | |
1388 | } | |
1389 | ||
55c9e7ca | 1390 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1391 | static int save_ust_context_app_ctx(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1392 | { |
1393 | int ret; | |
1394 | ||
a0377dfe FD |
1395 | LTTNG_ASSERT(writer); |
1396 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1397 | |
1398 | /* Application contexts are saved as application_context_type */ | |
1399 | ret = config_writer_open_element(writer, config_element_context_app); | |
1400 | if (ret) { | |
1401 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1402 | goto end; | |
1403 | } | |
1404 | ||
28ab034a JG |
1405 | ret = config_writer_write_element_string( |
1406 | writer, config_element_context_app_provider_name, ctx->ctx.u.app_ctx.provider_name); | |
045fc617 JG |
1407 | if (ret) { |
1408 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1409 | goto end; | |
1410 | } | |
1411 | ||
28ab034a JG |
1412 | ret = config_writer_write_element_string( |
1413 | writer, config_element_context_app_ctx_name, ctx->ctx.u.app_ctx.ctx_name); | |
045fc617 JG |
1414 | if (ret) { |
1415 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1416 | goto end; | |
1417 | } | |
1418 | ||
1419 | /* /app */ | |
1420 | ret = config_writer_close_element(writer); | |
1421 | if (ret) { | |
1422 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1423 | goto end; | |
1424 | } | |
55c9e7ca JR |
1425 | |
1426 | ret = LTTNG_OK; | |
045fc617 JG |
1427 | end: |
1428 | return ret; | |
1429 | } | |
1430 | ||
55c9e7ca | 1431 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1432 | static int save_ust_context_generic(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1433 | { |
1434 | int ret; | |
1435 | const char *context_type_string; | |
1436 | ||
a0377dfe FD |
1437 | LTTNG_ASSERT(writer); |
1438 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1439 | |
1440 | /* Save context as event_context_type_type */ | |
28ab034a | 1441 | context_type_string = get_ust_context_type_string(ctx->ctx.ctx); |
045fc617 JG |
1442 | if (!context_type_string) { |
1443 | ERR("Unsupported UST context type."); | |
1444 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1445 | goto end; | |
1446 | } | |
1447 | ||
28ab034a | 1448 | ret = config_writer_write_element_string(writer, config_element_type, context_type_string); |
045fc617 JG |
1449 | if (ret) { |
1450 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1451 | goto end; | |
1452 | } | |
55c9e7ca JR |
1453 | |
1454 | ret = LTTNG_OK; | |
045fc617 JG |
1455 | end: |
1456 | return ret; | |
1457 | } | |
1458 | ||
55c9e7ca | 1459 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1460 | static int save_ust_context(struct config_writer *writer, struct cds_list_head *ctx_list) |
fb198a11 JG |
1461 | { |
1462 | int ret; | |
1463 | struct ltt_ust_context *ctx; | |
1464 | ||
a0377dfe FD |
1465 | LTTNG_ASSERT(writer); |
1466 | LTTNG_ASSERT(ctx_list); | |
fb198a11 JG |
1467 | |
1468 | ret = config_writer_open_element(writer, config_element_contexts); | |
1469 | if (ret) { | |
1470 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1471 | goto end; | |
1472 | } | |
1473 | ||
28ab034a JG |
1474 | cds_list_for_each_entry (ctx, ctx_list, list) { |
1475 | ret = config_writer_open_element(writer, config_element_context); | |
fb198a11 JG |
1476 | if (ret) { |
1477 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1478 | goto end; | |
1479 | } | |
1480 | ||
045fc617 | 1481 | switch (ctx->ctx.ctx) { |
fc4b93fa | 1482 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
045fc617 JG |
1483 | ret = save_ust_context_perf_thread_counter(writer, ctx); |
1484 | break; | |
fc4b93fa | 1485 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
1486 | ret = save_ust_context_app_ctx(writer, ctx); |
1487 | break; | |
1488 | default: | |
1489 | /* Save generic context. */ | |
1490 | ret = save_ust_context_generic(writer, ctx); | |
1491 | } | |
55c9e7ca | 1492 | if (ret != LTTNG_OK) { |
045fc617 | 1493 | goto end; |
fb198a11 JG |
1494 | } |
1495 | ||
1496 | /* /context */ | |
1497 | ret = config_writer_close_element(writer); | |
1498 | if (ret) { | |
1499 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1500 | goto end; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | /* /contexts */ | |
1505 | ret = config_writer_close_element(writer); | |
1506 | if (ret) { | |
1507 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1508 | goto end; | |
1509 | } | |
55c9e7ca JR |
1510 | |
1511 | ret = LTTNG_OK; | |
fb198a11 JG |
1512 | end: |
1513 | return ret; | |
1514 | } | |
1515 | ||
55c9e7ca | 1516 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1517 | static int save_kernel_channel(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
1518 | { |
1519 | int ret; | |
1520 | ||
a0377dfe FD |
1521 | LTTNG_ASSERT(writer); |
1522 | LTTNG_ASSERT(kchan); | |
fb198a11 JG |
1523 | |
1524 | ret = config_writer_open_element(writer, config_element_channel); | |
1525 | if (ret) { | |
1526 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1527 | goto end; | |
1528 | } | |
1529 | ||
28ab034a | 1530 | ret = config_writer_write_element_string(writer, config_element_name, kchan->channel->name); |
fb198a11 JG |
1531 | if (ret) { |
1532 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1533 | goto end; | |
1534 | } | |
1535 | ||
28ab034a JG |
1536 | ret = config_writer_write_element_bool( |
1537 | writer, config_element_enabled, kchan->channel->enabled); | |
fb198a11 JG |
1538 | if (ret) { |
1539 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1540 | goto end; | |
1541 | } | |
1542 | ||
1543 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1544 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1545 | goto end; |
1546 | } | |
1547 | ||
0de3eda1 | 1548 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1549 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1550 | goto end; |
1551 | } | |
1552 | ||
645328ae | 1553 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1554 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1555 | goto end; |
1556 | } | |
1557 | ||
1558 | /* /channel */ | |
1559 | ret = config_writer_close_element(writer); | |
1560 | if (ret) { | |
1561 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1562 | goto end; | |
1563 | } | |
55c9e7ca JR |
1564 | |
1565 | ret = LTTNG_OK; | |
fb198a11 JG |
1566 | end: |
1567 | return ret; | |
1568 | } | |
1569 | ||
55c9e7ca | 1570 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1571 | static int save_ust_channel(struct config_writer *writer, |
1572 | struct ltt_ust_channel *ust_chan, | |
1573 | struct ltt_ust_session *session) | |
fb198a11 JG |
1574 | { |
1575 | int ret; | |
1576 | ||
a0377dfe FD |
1577 | LTTNG_ASSERT(writer); |
1578 | LTTNG_ASSERT(ust_chan); | |
1579 | LTTNG_ASSERT(session); | |
fb198a11 JG |
1580 | |
1581 | ret = config_writer_open_element(writer, config_element_channel); | |
1582 | if (ret) { | |
1583 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1584 | goto end; | |
1585 | } | |
1586 | ||
28ab034a | 1587 | ret = config_writer_write_element_string(writer, config_element_name, ust_chan->name); |
fb198a11 JG |
1588 | if (ret) { |
1589 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1590 | goto end; | |
1591 | } | |
1592 | ||
28ab034a | 1593 | ret = config_writer_write_element_bool(writer, config_element_enabled, ust_chan->enabled); |
fb198a11 JG |
1594 | if (ret) { |
1595 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1600 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1601 | goto end; |
1602 | } | |
1603 | ||
28ab034a JG |
1604 | ret = config_writer_write_element_unsigned_int( |
1605 | writer, config_element_tracefile_size, ust_chan->tracefile_size); | |
fb198a11 JG |
1606 | if (ret) { |
1607 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1608 | goto end; | |
1609 | } | |
1610 | ||
28ab034a JG |
1611 | ret = config_writer_write_element_unsigned_int( |
1612 | writer, config_element_tracefile_count, ust_chan->tracefile_count); | |
fb198a11 JG |
1613 | if (ret) { |
1614 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1615 | goto end; | |
1616 | } | |
1617 | ||
28ab034a JG |
1618 | ret = config_writer_write_element_unsigned_int( |
1619 | writer, config_element_live_timer_interval, session->live_timer_interval); | |
fb198a11 JG |
1620 | if (ret) { |
1621 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1622 | goto end; | |
1623 | } | |
1624 | ||
51755dc8 JG |
1625 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1626 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1627 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1628 | goto end; |
1629 | } | |
1630 | } else { | |
cd9adb8b | 1631 | struct agent *agent = nullptr; |
51755dc8 JG |
1632 | |
1633 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1634 | if (!agent) { | |
1635 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1636 | ERR("Could not find agent associated to UST subdomain"); | |
1637 | goto end; | |
1638 | } | |
1639 | ||
1640 | /* | |
1641 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1642 | * or Python) don't have any non-internal events. We retrieve | |
1643 | * the "agent" events associated with this channel and serialize | |
1644 | * them. | |
1645 | */ | |
8cd0a98d | 1646 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1647 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1648 | goto end; |
1649 | } | |
fb198a11 JG |
1650 | } |
1651 | ||
1652 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1653 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1654 | goto end; |
1655 | } | |
1656 | ||
1657 | /* /channel */ | |
1658 | ret = config_writer_close_element(writer); | |
1659 | if (ret) { | |
1660 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1661 | goto end; | |
1662 | } | |
55c9e7ca JR |
1663 | |
1664 | ret = LTTNG_OK; | |
fb198a11 JG |
1665 | end: |
1666 | return ret; | |
1667 | } | |
1668 | ||
55c9e7ca | 1669 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1670 | static int save_kernel_session(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
1671 | { |
1672 | int ret; | |
1673 | struct ltt_kernel_channel *kchan; | |
1674 | ||
a0377dfe FD |
1675 | LTTNG_ASSERT(writer); |
1676 | LTTNG_ASSERT(session); | |
fb198a11 | 1677 | |
28ab034a JG |
1678 | ret = config_writer_write_element_string( |
1679 | writer, config_element_type, config_domain_type_kernel); | |
fb198a11 JG |
1680 | if (ret) { |
1681 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1682 | goto end; | |
1683 | } | |
1684 | ||
28ab034a JG |
1685 | ret = config_writer_write_element_string( |
1686 | writer, config_element_buffer_type, config_buffer_type_global); | |
fb198a11 JG |
1687 | if (ret) { |
1688 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1689 | goto end; | |
1690 | } | |
1691 | ||
28ab034a | 1692 | ret = config_writer_open_element(writer, config_element_channels); |
fb198a11 JG |
1693 | if (ret) { |
1694 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1695 | goto end; | |
1696 | } | |
1697 | ||
28ab034a | 1698 | cds_list_for_each_entry (kchan, &session->kernel_session->channel_list.head, list) { |
fb198a11 | 1699 | ret = save_kernel_channel(writer, kchan); |
55c9e7ca | 1700 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1701 | goto end; |
1702 | } | |
1703 | } | |
1704 | ||
1705 | /* /channels */ | |
1706 | ret = config_writer_close_element(writer); | |
1707 | if (ret) { | |
1708 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1709 | goto end; | |
1710 | } | |
55c9e7ca JR |
1711 | |
1712 | ret = LTTNG_OK; | |
fb198a11 JG |
1713 | end: |
1714 | return ret; | |
1715 | } | |
1716 | ||
28ab034a | 1717 | static const char *get_config_domain_str(enum lttng_domain_type domain) |
51755dc8 JG |
1718 | { |
1719 | const char *str_dom; | |
1720 | ||
1721 | switch (domain) { | |
1722 | case LTTNG_DOMAIN_KERNEL: | |
1723 | str_dom = config_domain_type_kernel; | |
1724 | break; | |
1725 | case LTTNG_DOMAIN_UST: | |
1726 | str_dom = config_domain_type_ust; | |
1727 | break; | |
1728 | case LTTNG_DOMAIN_JUL: | |
1729 | str_dom = config_domain_type_jul; | |
1730 | break; | |
1731 | case LTTNG_DOMAIN_LOG4J: | |
1732 | str_dom = config_domain_type_log4j; | |
1733 | break; | |
1734 | case LTTNG_DOMAIN_PYTHON: | |
1735 | str_dom = config_domain_type_python; | |
1736 | break; | |
1737 | default: | |
a0377dfe | 1738 | abort(); |
51755dc8 JG |
1739 | } |
1740 | ||
1741 | return str_dom; | |
1742 | } | |
1743 | ||
55c9e7ca | 1744 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 1745 | static int save_process_attr_tracker(struct config_writer *writer, |
28ab034a JG |
1746 | struct ltt_session *sess, |
1747 | int domain, | |
1748 | enum lttng_process_attr process_attr) | |
e8fcabef | 1749 | { |
55c9e7ca | 1750 | int ret = LTTNG_OK; |
55c9e7ca | 1751 | const char *element_id_tracker, *element_target_id, *element_id; |
159b042f JG |
1752 | const struct process_attr_tracker *tracker; |
1753 | enum lttng_tracking_policy tracking_policy; | |
cd9adb8b | 1754 | struct lttng_process_attr_values *values = nullptr; |
159b042f JG |
1755 | |
1756 | switch (process_attr) { | |
1757 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1758 | element_id_tracker = config_element_process_attr_tracker_pid; | |
1759 | element_target_id = config_element_process_attr_pid_value; | |
1760 | element_id = config_element_process_attr_id; | |
1761 | break; | |
1762 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1763 | element_id_tracker = config_element_process_attr_tracker_vpid; | |
1764 | element_target_id = config_element_process_attr_vpid_value; | |
1765 | element_id = config_element_process_attr_id; | |
1766 | break; | |
1767 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1768 | element_id_tracker = config_element_process_attr_tracker_uid; | |
1769 | element_target_id = config_element_process_attr_uid_value; | |
1770 | element_id = config_element_process_attr_id; | |
1771 | break; | |
1772 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1773 | element_id_tracker = config_element_process_attr_tracker_vuid; | |
1774 | element_target_id = config_element_process_attr_vuid_value; | |
1775 | element_id = config_element_process_attr_id; | |
1776 | break; | |
1777 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1778 | element_id_tracker = config_element_process_attr_tracker_gid; | |
1779 | element_target_id = config_element_process_attr_gid_value; | |
1780 | element_id = config_element_process_attr_id; | |
1781 | break; | |
1782 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1783 | element_id_tracker = config_element_process_attr_tracker_vgid; | |
1784 | element_target_id = config_element_process_attr_vgid_value; | |
1785 | element_id = config_element_process_attr_id; | |
55c9e7ca JR |
1786 | break; |
1787 | default: | |
1788 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1789 | goto end; | |
1790 | } | |
e8fcabef JG |
1791 | |
1792 | switch (domain) { | |
1793 | case LTTNG_DOMAIN_KERNEL: | |
1794 | { | |
28ab034a | 1795 | tracker = kernel_get_process_attr_tracker(sess->kernel_session, process_attr); |
a0377dfe | 1796 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1797 | break; |
1798 | } | |
1799 | case LTTNG_DOMAIN_UST: | |
1800 | { | |
28ab034a | 1801 | tracker = trace_ust_get_process_attr_tracker(sess->ust_session, process_attr); |
a0377dfe | 1802 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1803 | break; |
1804 | } | |
1805 | case LTTNG_DOMAIN_JUL: | |
1806 | case LTTNG_DOMAIN_LOG4J: | |
1807 | case LTTNG_DOMAIN_PYTHON: | |
1808 | default: | |
159b042f | 1809 | ret = LTTNG_ERR_UNSUPPORTED_DOMAIN; |
e8fcabef JG |
1810 | goto end; |
1811 | } | |
1812 | ||
159b042f JG |
1813 | tracking_policy = process_attr_tracker_get_tracking_policy(tracker); |
1814 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_ALL) { | |
1815 | /* Tracking all, nothing to output. */ | |
1816 | ret = LTTNG_OK; | |
e283e4a0 JR |
1817 | goto end; |
1818 | } | |
a7a533cd | 1819 | |
55c9e7ca JR |
1820 | ret = config_writer_open_element(writer, element_id_tracker); |
1821 | if (ret) { | |
1822 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1823 | goto end; | |
1824 | } | |
1825 | ||
28ab034a | 1826 | ret = config_writer_open_element(writer, config_element_process_attr_values); |
55c9e7ca JR |
1827 | if (ret) { |
1828 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1829 | goto end; | |
1830 | } | |
1831 | ||
88ac6301 | 1832 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_SET) { |
159b042f JG |
1833 | unsigned int i, count; |
1834 | enum process_attr_tracker_status status = | |
28ab034a | 1835 | process_attr_tracker_get_inclusion_set(tracker, &values); |
159b042f JG |
1836 | |
1837 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1838 | ret = LTTNG_ERR_NOMEM; | |
1839 | goto end; | |
1840 | } | |
1841 | ||
1842 | count = _lttng_process_attr_values_get_count(values); | |
1843 | ||
1844 | for (i = 0; i < count; i++) { | |
1845 | unsigned int integral_value = UINT_MAX; | |
cd9adb8b | 1846 | const char *name = nullptr; |
159b042f | 1847 | const struct process_attr_value *value = |
28ab034a | 1848 | lttng_process_attr_tracker_values_get_at_index(values, i); |
159b042f | 1849 | |
a0377dfe | 1850 | LTTNG_ASSERT(value); |
28ab034a | 1851 | ret = config_writer_open_element(writer, element_target_id); |
159b042f | 1852 | if (ret) { |
a7a533cd JR |
1853 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1854 | goto end; | |
1855 | } | |
159b042f JG |
1856 | |
1857 | switch (value->type) { | |
1858 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_PID: | |
28ab034a | 1859 | integral_value = (unsigned int) value->value.pid; |
55c9e7ca | 1860 | break; |
159b042f | 1861 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_UID: |
28ab034a | 1862 | integral_value = (unsigned int) value->value.uid; |
159b042f JG |
1863 | break; |
1864 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GID: | |
28ab034a | 1865 | integral_value = (unsigned int) value->value.gid; |
159b042f JG |
1866 | break; |
1867 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME: | |
1868 | name = value->value.user_name; | |
a0377dfe | 1869 | LTTNG_ASSERT(name); |
159b042f JG |
1870 | break; |
1871 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME: | |
1872 | name = value->value.group_name; | |
a0377dfe | 1873 | LTTNG_ASSERT(name); |
55c9e7ca JR |
1874 | break; |
1875 | default: | |
159b042f | 1876 | abort(); |
e8fcabef | 1877 | } |
159b042f JG |
1878 | |
1879 | if (name) { | |
28ab034a JG |
1880 | ret = config_writer_write_element_string( |
1881 | writer, config_element_name, name); | |
159b042f JG |
1882 | } else { |
1883 | ret = config_writer_write_element_unsigned_int( | |
28ab034a | 1884 | writer, element_id, integral_value); |
e8fcabef | 1885 | } |
159b042f JG |
1886 | |
1887 | if (ret) { | |
2d97a006 JR |
1888 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1889 | goto end; | |
1890 | } | |
e8fcabef | 1891 | |
55c9e7ca | 1892 | /* /$element_target_id */ |
e8fcabef JG |
1893 | ret = config_writer_close_element(writer); |
1894 | if (ret) { | |
1895 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1896 | goto end; | |
1897 | } | |
1898 | } | |
55c9e7ca | 1899 | } |
e8fcabef | 1900 | |
88ac6301 | 1901 | /* /values */ |
55c9e7ca JR |
1902 | ret = config_writer_close_element(writer); |
1903 | if (ret) { | |
1904 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1905 | goto end; | |
1906 | } | |
e8fcabef | 1907 | |
55c9e7ca JR |
1908 | /* /$element_id_tracker */ |
1909 | ret = config_writer_close_element(writer); | |
1910 | if (ret) { | |
1911 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1912 | goto end; | |
e8fcabef | 1913 | } |
55c9e7ca JR |
1914 | |
1915 | ret = LTTNG_OK; | |
e8fcabef | 1916 | end: |
159b042f | 1917 | lttng_process_attr_values_destroy(values); |
e8fcabef JG |
1918 | return ret; |
1919 | } | |
1920 | ||
55c9e7ca | 1921 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1922 | static int |
1923 | save_process_attr_trackers(struct config_writer *writer, struct ltt_session *sess, int domain) | |
55c9e7ca JR |
1924 | { |
1925 | int ret; | |
1926 | ||
1927 | switch (domain) { | |
1928 | case LTTNG_DOMAIN_KERNEL: | |
28ab034a JG |
1929 | ret = save_process_attr_tracker( |
1930 | writer, sess, domain, LTTNG_PROCESS_ATTR_PROCESS_ID); | |
159b042f JG |
1931 | if (ret != LTTNG_OK) { |
1932 | goto end; | |
1933 | } | |
28ab034a JG |
1934 | ret = save_process_attr_tracker( |
1935 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1936 | if (ret != LTTNG_OK) { |
1937 | goto end; | |
1938 | } | |
28ab034a | 1939 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_USER_ID); |
159b042f JG |
1940 | if (ret != LTTNG_OK) { |
1941 | goto end; | |
1942 | } | |
28ab034a JG |
1943 | ret = save_process_attr_tracker( |
1944 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1945 | if (ret != LTTNG_OK) { |
1946 | goto end; | |
1947 | } | |
28ab034a | 1948 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_GROUP_ID); |
159b042f JG |
1949 | if (ret != LTTNG_OK) { |
1950 | goto end; | |
1951 | } | |
28ab034a JG |
1952 | ret = save_process_attr_tracker( |
1953 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1954 | if (ret != LTTNG_OK) { |
1955 | goto end; | |
1956 | } | |
55c9e7ca JR |
1957 | break; |
1958 | case LTTNG_DOMAIN_UST: | |
28ab034a JG |
1959 | ret = save_process_attr_tracker( |
1960 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1961 | if (ret != LTTNG_OK) { |
1962 | goto end; | |
1963 | } | |
28ab034a JG |
1964 | ret = save_process_attr_tracker( |
1965 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1966 | if (ret != LTTNG_OK) { |
1967 | goto end; | |
1968 | } | |
28ab034a JG |
1969 | ret = save_process_attr_tracker( |
1970 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1971 | if (ret != LTTNG_OK) { |
1972 | goto end; | |
1973 | } | |
55c9e7ca JR |
1974 | break; |
1975 | default: | |
159b042f | 1976 | ret = LTTNG_ERR_INVALID; |
74675e31 | 1977 | goto end; |
55c9e7ca | 1978 | } |
159b042f JG |
1979 | ret = LTTNG_OK; |
1980 | end: | |
1981 | return ret; | |
55c9e7ca JR |
1982 | } |
1983 | ||
1984 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
28ab034a JG |
1985 | static int save_ust_domain(struct config_writer *writer, |
1986 | struct ltt_session *session, | |
1987 | enum lttng_domain_type domain) | |
fb198a11 JG |
1988 | { |
1989 | int ret; | |
1990 | struct ltt_ust_channel *ust_chan; | |
1991 | const char *buffer_type_string; | |
1992 | struct lttng_ht_node_str *node; | |
1993 | struct lttng_ht_iter iter; | |
51755dc8 | 1994 | const char *config_domain_name; |
fb198a11 | 1995 | |
a0377dfe FD |
1996 | LTTNG_ASSERT(writer); |
1997 | LTTNG_ASSERT(session); | |
fb198a11 | 1998 | |
28ab034a | 1999 | ret = config_writer_open_element(writer, config_element_domain); |
51755dc8 JG |
2000 | if (ret) { |
2001 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2002 | goto end; | |
2003 | } | |
2004 | ||
2005 | config_domain_name = get_config_domain_str(domain); | |
2006 | if (!config_domain_name) { | |
2007 | ret = LTTNG_ERR_INVALID; | |
2008 | goto end; | |
2009 | } | |
2010 | ||
28ab034a | 2011 | ret = config_writer_write_element_string(writer, config_element_type, config_domain_name); |
fb198a11 JG |
2012 | if (ret) { |
2013 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2014 | goto end; | |
2015 | } | |
2016 | ||
28ab034a | 2017 | buffer_type_string = get_buffer_type_string(session->ust_session->buffer_type); |
fb198a11 JG |
2018 | if (!buffer_type_string) { |
2019 | ERR("Unsupported buffer type."); | |
2020 | ret = LTTNG_ERR_INVALID; | |
2021 | goto end; | |
2022 | } | |
2023 | ||
28ab034a JG |
2024 | ret = config_writer_write_element_string( |
2025 | writer, config_element_buffer_type, buffer_type_string); | |
fb198a11 JG |
2026 | if (ret) { |
2027 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2028 | goto end; | |
2029 | } | |
2030 | ||
2031 | ret = config_writer_open_element(writer, config_element_channels); | |
2032 | if (ret) { | |
2033 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2034 | goto end; | |
2035 | } | |
2036 | ||
2037 | rcu_read_lock(); | |
28ab034a JG |
2038 | cds_lfht_for_each_entry ( |
2039 | session->ust_session->domain_global.channels->ht, &iter.iter, node, node) { | |
0114db0e | 2040 | ust_chan = lttng::utils::container_of(node, <t_ust_channel::node); |
51755dc8 | 2041 | if (domain == ust_chan->domain) { |
fb198a11 | 2042 | ret = save_ust_channel(writer, ust_chan, session->ust_session); |
55c9e7ca | 2043 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2044 | rcu_read_unlock(); |
2045 | goto end; | |
2046 | } | |
2047 | } | |
2048 | } | |
2049 | rcu_read_unlock(); | |
2050 | ||
2051 | /* /channels */ | |
2052 | ret = config_writer_close_element(writer); | |
2053 | if (ret) { | |
2054 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2055 | goto end; | |
2056 | } | |
51755dc8 | 2057 | |
e8fcabef | 2058 | if (domain == LTTNG_DOMAIN_UST) { |
28ab034a | 2059 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2060 | if (ret) { |
2061 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2062 | goto end; | |
2063 | } | |
2064 | ||
28ab034a | 2065 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2066 | if (ret != LTTNG_OK) { |
847a5916 JR |
2067 | goto end; |
2068 | } | |
2069 | ||
e8fcabef | 2070 | /* /trackers */ |
847a5916 JR |
2071 | ret = config_writer_close_element(writer); |
2072 | if (ret) { | |
55c9e7ca | 2073 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2074 | goto end; |
2075 | } | |
e8fcabef | 2076 | } |
847a5916 | 2077 | |
e8fcabef JG |
2078 | /* /domain */ |
2079 | ret = config_writer_close_element(writer); | |
2080 | if (ret) { | |
2081 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2082 | goto end; | |
847a5916 | 2083 | } |
e8fcabef | 2084 | |
55c9e7ca | 2085 | ret = LTTNG_OK; |
847a5916 | 2086 | end: |
847a5916 JR |
2087 | return ret; |
2088 | } | |
2089 | ||
55c9e7ca | 2090 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2091 | static int save_domains(struct config_writer *writer, struct ltt_session *session) |
fb198a11 | 2092 | { |
55c9e7ca | 2093 | int ret = LTTNG_OK; |
fb198a11 | 2094 | |
a0377dfe FD |
2095 | LTTNG_ASSERT(writer); |
2096 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2097 | |
2098 | if (!session->kernel_session && !session->ust_session) { | |
2099 | goto end; | |
2100 | } | |
2101 | ||
2102 | ret = config_writer_open_element(writer, config_element_domains); | |
2103 | if (ret) { | |
2104 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2105 | goto end; | |
2106 | } | |
2107 | ||
fb198a11 | 2108 | if (session->kernel_session) { |
28ab034a | 2109 | ret = config_writer_open_element(writer, config_element_domain); |
fb198a11 JG |
2110 | if (ret) { |
2111 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2112 | goto end; | |
2113 | } | |
2114 | ||
2115 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2116 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2117 | goto end; |
2118 | } | |
2119 | ||
28ab034a | 2120 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2121 | if (ret) { |
2122 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2123 | goto end; | |
2124 | } | |
2125 | ||
28ab034a | 2126 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_KERNEL); |
55c9e7ca | 2127 | if (ret != LTTNG_OK) { |
847a5916 JR |
2128 | goto end; |
2129 | } | |
2130 | ||
2131 | /* /trackers */ | |
2132 | ret = config_writer_close_element(writer); | |
2133 | if (ret) { | |
2134 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2135 | goto end; | |
2136 | } | |
fb198a11 JG |
2137 | /* /domain */ |
2138 | ret = config_writer_close_element(writer); | |
2139 | if (ret) { | |
2140 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2141 | goto end; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | if (session->ust_session) { | |
51755dc8 | 2146 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2147 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2148 | goto end; |
2149 | } | |
2150 | ||
51755dc8 | 2151 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2152 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2153 | goto end; |
2154 | } | |
fb198a11 | 2155 | |
51755dc8 | 2156 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2157 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2158 | goto end; |
2159 | } | |
65d72c41 | 2160 | |
51755dc8 | 2161 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2162 | if (ret != LTTNG_OK) { |
51755dc8 | 2163 | goto end; |
fb198a11 JG |
2164 | } |
2165 | } | |
2166 | ||
2167 | /* /domains */ | |
2168 | ret = config_writer_close_element(writer); | |
2169 | if (ret) { | |
2170 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2171 | goto end; | |
2172 | } | |
55c9e7ca JR |
2173 | |
2174 | ret = LTTNG_OK; | |
fb198a11 JG |
2175 | end: |
2176 | return ret; | |
2177 | } | |
2178 | ||
55c9e7ca | 2179 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2180 | static int save_consumer_output(struct config_writer *writer, struct consumer_output *output) |
fb198a11 JG |
2181 | { |
2182 | int ret; | |
2183 | ||
a0377dfe FD |
2184 | LTTNG_ASSERT(writer); |
2185 | LTTNG_ASSERT(output); | |
fb198a11 JG |
2186 | |
2187 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2188 | if (ret) { | |
2189 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2190 | goto end; | |
2191 | } | |
2192 | ||
28ab034a | 2193 | ret = config_writer_write_element_bool(writer, config_element_enabled, output->enabled); |
fb198a11 JG |
2194 | if (ret) { |
2195 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2196 | goto end; | |
2197 | } | |
2198 | ||
2199 | ret = config_writer_open_element(writer, config_element_destination); | |
2200 | if (ret) { | |
2201 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2202 | goto end; | |
2203 | } | |
2204 | ||
2205 | switch (output->type) { | |
2206 | case CONSUMER_DST_LOCAL: | |
28ab034a JG |
2207 | ret = config_writer_write_element_string( |
2208 | writer, config_element_path, output->dst.session_root_path); | |
fb198a11 JG |
2209 | if (ret) { |
2210 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2211 | goto end; | |
2212 | } | |
2213 | break; | |
2214 | case CONSUMER_DST_NET: | |
2215 | { | |
2216 | char *uri; | |
2217 | ||
64803277 | 2218 | uri = calloc<char>(PATH_MAX); |
fb198a11 JG |
2219 | if (!uri) { |
2220 | ret = LTTNG_ERR_NOMEM; | |
2221 | goto end; | |
2222 | } | |
2223 | ||
2224 | ret = config_writer_open_element(writer, config_element_net_output); | |
2225 | if (ret) { | |
2226 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2227 | goto end_net_output; | |
2228 | } | |
2229 | ||
28ab034a | 2230 | if (output->dst.net.control_isset && output->dst.net.data_isset) { |
fb198a11 JG |
2231 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); |
2232 | if (ret < 0) { | |
2233 | ret = LTTNG_ERR_INVALID; | |
2234 | goto end_net_output; | |
2235 | } | |
2236 | ||
28ab034a JG |
2237 | ret = config_writer_write_element_string( |
2238 | writer, config_element_control_uri, uri); | |
fb198a11 JG |
2239 | if (ret) { |
2240 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2241 | goto end_net_output; | |
2242 | } | |
2243 | ||
2244 | ret = uri_to_str_url(&output->dst.net.data, uri, PATH_MAX); | |
2245 | if (ret < 0) { | |
2246 | ret = LTTNG_ERR_INVALID; | |
2247 | goto end_net_output; | |
2248 | } | |
2249 | ||
28ab034a JG |
2250 | ret = config_writer_write_element_string( |
2251 | writer, config_element_data_uri, uri); | |
fb198a11 JG |
2252 | if (ret) { |
2253 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2254 | goto end_net_output; | |
2255 | } | |
55c9e7ca | 2256 | ret = LTTNG_OK; |
28ab034a | 2257 | end_net_output: |
fb198a11 | 2258 | free(uri); |
55c9e7ca | 2259 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2260 | goto end; |
2261 | } | |
2262 | } else { | |
28ab034a JG |
2263 | ret = !output->dst.net.control_isset ? LTTNG_ERR_URL_CTRL_MISS : |
2264 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2265 | free(uri); |
fb198a11 JG |
2266 | goto end; |
2267 | } | |
2268 | ||
2269 | ret = config_writer_close_element(writer); | |
2270 | if (ret) { | |
2271 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2272 | goto end; | |
2273 | } | |
2274 | break; | |
2275 | } | |
2276 | default: | |
2277 | ERR("Unsupported consumer output type."); | |
2278 | ret = LTTNG_ERR_INVALID; | |
2279 | goto end; | |
2280 | } | |
2281 | ||
2282 | /* /destination */ | |
2283 | ret = config_writer_close_element(writer); | |
2284 | if (ret) { | |
2285 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2286 | goto end; | |
2287 | } | |
2288 | ||
2289 | /* /consumer_output */ | |
2290 | ret = config_writer_close_element(writer); | |
2291 | if (ret) { | |
2292 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2293 | goto end; | |
2294 | } | |
55c9e7ca JR |
2295 | |
2296 | ret = LTTNG_OK; | |
fb198a11 JG |
2297 | end: |
2298 | return ret; | |
2299 | } | |
2300 | ||
55c9e7ca | 2301 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2302 | static int save_snapshot_outputs(struct config_writer *writer, struct snapshot *snapshot) |
fb198a11 JG |
2303 | { |
2304 | int ret; | |
2305 | struct lttng_ht_iter iter; | |
2306 | struct snapshot_output *output; | |
2307 | ||
a0377dfe FD |
2308 | LTTNG_ASSERT(writer); |
2309 | LTTNG_ASSERT(snapshot); | |
fb198a11 JG |
2310 | |
2311 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2312 | if (ret) { | |
2313 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2314 | goto end; | |
2315 | } | |
2316 | ||
2317 | rcu_read_lock(); | |
28ab034a JG |
2318 | cds_lfht_for_each_entry (snapshot->output_ht->ht, &iter.iter, output, node.node) { |
2319 | ret = config_writer_open_element(writer, config_element_output); | |
fb198a11 JG |
2320 | if (ret) { |
2321 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2322 | goto end_unlock; | |
2323 | } | |
2324 | ||
28ab034a | 2325 | ret = config_writer_write_element_string(writer, config_element_name, output->name); |
fb198a11 JG |
2326 | if (ret) { |
2327 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2328 | goto end_unlock; | |
2329 | } | |
2330 | ||
28ab034a JG |
2331 | ret = config_writer_write_element_unsigned_int( |
2332 | writer, config_element_max_size, output->max_size); | |
fb198a11 JG |
2333 | if (ret) { |
2334 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2335 | goto end_unlock; | |
2336 | } | |
2337 | ||
2338 | ret = save_consumer_output(writer, output->consumer); | |
55c9e7ca | 2339 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2340 | goto end_unlock; |
2341 | } | |
2342 | ||
2343 | /* /output */ | |
2344 | ret = config_writer_close_element(writer); | |
2345 | if (ret) { | |
2346 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2347 | goto end_unlock; | |
2348 | } | |
2349 | } | |
2350 | rcu_read_unlock(); | |
2351 | ||
2352 | /* /snapshot_outputs */ | |
2353 | ret = config_writer_close_element(writer); | |
2354 | if (ret) { | |
2355 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2356 | goto end; | |
2357 | } | |
2358 | ||
55c9e7ca | 2359 | ret = LTTNG_OK; |
fb198a11 JG |
2360 | end: |
2361 | return ret; | |
2362 | end_unlock: | |
2363 | rcu_read_unlock(); | |
2364 | return ret; | |
2365 | } | |
2366 | ||
55c9e7ca | 2367 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2368 | static int save_session_output(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
2369 | { |
2370 | int ret; | |
2371 | ||
a0377dfe FD |
2372 | LTTNG_ASSERT(writer); |
2373 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2374 | |
2375 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
28ab034a | 2376 | (!session->snapshot_mode && !session->consumer)) { |
fb198a11 | 2377 | /* Session is in no output mode */ |
55c9e7ca | 2378 | ret = LTTNG_OK; |
fb198a11 JG |
2379 | goto end; |
2380 | } | |
2381 | ||
2382 | ret = config_writer_open_element(writer, config_element_output); | |
2383 | if (ret) { | |
2384 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2385 | goto end; | |
2386 | } | |
2387 | ||
2388 | if (session->snapshot_mode) { | |
2389 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2390 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2391 | goto end; |
2392 | } | |
2393 | } else { | |
2394 | if (session->consumer) { | |
2395 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2396 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2397 | goto end; |
2398 | } | |
2399 | } | |
2400 | } | |
2401 | ||
2402 | /* /output */ | |
2403 | ret = config_writer_close_element(writer); | |
2404 | if (ret) { | |
2405 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2406 | goto end; | |
2407 | } | |
55c9e7ca | 2408 | ret = LTTNG_OK; |
fb198a11 JG |
2409 | end: |
2410 | return ret; | |
2411 | } | |
2412 | ||
28ab034a JG |
2413 | static int save_session_rotation_schedule(struct config_writer *writer, |
2414 | enum lttng_rotation_schedule_type type, | |
2415 | uint64_t value) | |
ce6176f2 JG |
2416 | { |
2417 | int ret = 0; | |
2418 | const char *element_name; | |
2419 | const char *value_name; | |
2420 | ||
2421 | switch (type) { | |
2422 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2423 | element_name = config_element_rotation_schedule_periodic; | |
28ab034a | 2424 | value_name = config_element_rotation_schedule_periodic_time_us; |
ce6176f2 JG |
2425 | break; |
2426 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2427 | element_name = config_element_rotation_schedule_size_threshold; | |
28ab034a | 2428 | value_name = config_element_rotation_schedule_size_threshold_bytes; |
ce6176f2 JG |
2429 | break; |
2430 | default: | |
2431 | ret = -1; | |
2432 | goto end; | |
2433 | } | |
2434 | ||
2435 | ret = config_writer_open_element(writer, element_name); | |
2436 | if (ret) { | |
2437 | goto end; | |
2438 | } | |
2439 | ||
28ab034a | 2440 | ret = config_writer_write_element_unsigned_int(writer, value_name, value); |
ce6176f2 JG |
2441 | if (ret) { |
2442 | goto end; | |
2443 | } | |
2444 | ||
2445 | /* Close schedule descriptor element. */ | |
2446 | ret = config_writer_close_element(writer); | |
2447 | if (ret) { | |
2448 | goto end; | |
2449 | } | |
2450 | end: | |
2451 | return ret; | |
2452 | } | |
2453 | ||
28ab034a JG |
2454 | static int save_session_rotation_schedules(struct config_writer *writer, |
2455 | struct ltt_session *session) | |
ce6176f2 JG |
2456 | { |
2457 | int ret; | |
2458 | ||
28ab034a | 2459 | ret = config_writer_open_element(writer, config_element_rotation_schedules); |
f829d17a JG |
2460 | if (ret) { |
2461 | goto end; | |
2462 | } | |
ce6176f2 JG |
2463 | if (session->rotate_timer_period) { |
2464 | ret = save_session_rotation_schedule(writer, | |
28ab034a JG |
2465 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, |
2466 | session->rotate_timer_period); | |
ce6176f2 JG |
2467 | if (ret) { |
2468 | goto close_schedules; | |
2469 | } | |
2470 | } | |
2471 | if (session->rotate_size) { | |
28ab034a JG |
2472 | ret = save_session_rotation_schedule( |
2473 | writer, LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, session->rotate_size); | |
ce6176f2 JG |
2474 | if (ret) { |
2475 | goto close_schedules; | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | close_schedules: | |
2480 | /* Close rotation schedules element. */ | |
2481 | ret = config_writer_close_element(writer); | |
2482 | if (ret) { | |
2483 | goto end; | |
2484 | } | |
2485 | end: | |
2486 | return ret; | |
2487 | } | |
2488 | ||
fb198a11 JG |
2489 | /* |
2490 | * Save the given session. | |
2491 | * | |
55c9e7ca | 2492 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 | 2493 | */ |
28ab034a JG |
2494 | static int save_session(struct ltt_session *session, |
2495 | struct lttng_save_session_attr *attr, | |
2496 | lttng_sock_cred *creds) | |
fb198a11 | 2497 | { |
b45f9ad2 | 2498 | int ret, fd = -1; |
511653c3 | 2499 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 | 2500 | size_t len; |
cd9adb8b | 2501 | struct config_writer *writer = nullptr; |
fb198a11 JG |
2502 | size_t session_name_len; |
2503 | const char *provided_path; | |
f376ad9c | 2504 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 | 2505 | |
a0377dfe FD |
2506 | LTTNG_ASSERT(session); |
2507 | LTTNG_ASSERT(attr); | |
2508 | LTTNG_ASSERT(creds); | |
fb198a11 JG |
2509 | |
2510 | session_name_len = strlen(session->name); | |
95a29ab8 | 2511 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 | 2512 | |
28ab034a | 2513 | if (!session_access_ok(session, LTTNG_SOCK_GET_UID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2514 | ret = LTTNG_ERR_EPERM; |
2515 | goto end; | |
2516 | } | |
2517 | ||
2518 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2519 | if (provided_path) { | |
95a29ab8 | 2520 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2521 | len = strlen(provided_path); |
d2992717 | 2522 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2523 | ret = LTTNG_ERR_SET_URL; |
2524 | goto end; | |
2525 | } | |
511653c3 | 2526 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2527 | } else { |
7e078ad1 | 2528 | ssize_t ret_len; |
28ab034a | 2529 | char *home_dir = utils_get_user_home_dir(LTTNG_SOCK_GET_UID_CRED(creds)); |
fb198a11 JG |
2530 | if (!home_dir) { |
2531 | ret = LTTNG_ERR_SET_URL; | |
2532 | goto end; | |
2533 | } | |
2534 | ||
28ab034a JG |
2535 | ret_len = snprintf(config_file_path, |
2536 | sizeof(config_file_path), | |
2537 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
2538 | home_dir); | |
fb198a11 | 2539 | free(home_dir); |
7e078ad1 | 2540 | if (ret_len < 0) { |
fb198a11 JG |
2541 | PERROR("snprintf save session"); |
2542 | ret = LTTNG_ERR_SET_URL; | |
2543 | goto end; | |
2544 | } | |
7e078ad1 | 2545 | len = ret_len; |
fb198a11 JG |
2546 | } |
2547 | ||
2548 | /* | |
d2992717 DG |
2549 | * Check the path fits in the config file path dst including the '/' |
2550 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2551 | */ |
28ab034a JG |
2552 | if ((len + session_name_len + 2 + sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) > |
2553 | sizeof(config_file_path)) { | |
fb198a11 JG |
2554 | ret = LTTNG_ERR_SET_URL; |
2555 | goto end; | |
2556 | } | |
2557 | ||
28ab034a JG |
2558 | ret = run_as_mkdir_recursive(config_file_path, |
2559 | S_IRWXU | S_IRWXG, | |
2560 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2561 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2562 | if (ret) { |
2563 | ret = LTTNG_ERR_SET_URL; | |
2564 | goto end; | |
2565 | } | |
2566 | ||
d2992717 DG |
2567 | /* |
2568 | * At this point, we know that everything fits in the buffer. Validation | |
2569 | * was done just above. | |
2570 | */ | |
fb198a11 | 2571 | config_file_path[len++] = '/'; |
511653c3 | 2572 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2573 | len += session_name_len; |
2574 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2575 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2576 | config_file_path[len] = '\0'; | |
fb198a11 | 2577 | |
f376ad9c JG |
2578 | if (!attr->overwrite) { |
2579 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2580 | } |
2581 | ||
28ab034a JG |
2582 | fd = run_as_open(config_file_path, |
2583 | file_open_flags, | |
2584 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, | |
2585 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2586 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2587 | if (fd < 0) { |
2588 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2589 | switch (errno) { |
2590 | case EEXIST: | |
2591 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2592 | break; | |
2593 | case EACCES: | |
2594 | ret = LTTNG_ERR_EPERM; | |
2595 | break; | |
2596 | default: | |
2597 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2598 | break; | |
2599 | } | |
fb198a11 JG |
2600 | goto end; |
2601 | } | |
2602 | ||
705bb62f | 2603 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2604 | if (!writer) { |
2605 | ret = LTTNG_ERR_NOMEM; | |
2606 | goto end; | |
2607 | } | |
2608 | ||
2609 | ret = config_writer_open_element(writer, config_element_sessions); | |
2610 | if (ret) { | |
2611 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2612 | goto end; | |
2613 | } | |
2614 | ||
2615 | ret = config_writer_open_element(writer, config_element_session); | |
2616 | if (ret) { | |
2617 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2618 | goto end; | |
2619 | } | |
2620 | ||
28ab034a | 2621 | ret = config_writer_write_element_string(writer, config_element_name, session->name); |
fb198a11 JG |
2622 | if (ret) { |
2623 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2624 | goto end; | |
2625 | } | |
2626 | ||
55c9e7ca | 2627 | if (session->shm_path[0] != '\0') { |
28ab034a JG |
2628 | ret = config_writer_write_element_string( |
2629 | writer, config_element_shared_memory_path, session->shm_path); | |
9e7c9f56 JR |
2630 | if (ret) { |
2631 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2632 | goto end; | |
2633 | } | |
2634 | } | |
2635 | ||
fb198a11 | 2636 | ret = save_domains(writer, session); |
55c9e7ca | 2637 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2638 | goto end; |
2639 | } | |
2640 | ||
28ab034a | 2641 | ret = config_writer_write_element_bool(writer, config_element_started, session->active); |
fb198a11 JG |
2642 | if (ret) { |
2643 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2644 | goto end; | |
2645 | } | |
2646 | ||
28ab034a JG |
2647 | if (session->snapshot_mode || session->live_timer || session->rotate_timer_period || |
2648 | session->rotate_size) { | |
fb198a11 JG |
2649 | ret = config_writer_open_element(writer, config_element_attributes); |
2650 | if (ret) { | |
2651 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2652 | goto end; | |
2653 | } | |
2654 | ||
2655 | if (session->snapshot_mode) { | |
28ab034a JG |
2656 | ret = config_writer_write_element_bool( |
2657 | writer, config_element_snapshot_mode, 1); | |
fb198a11 JG |
2658 | if (ret) { |
2659 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2660 | goto end; | |
2661 | } | |
329f3443 | 2662 | } else if (session->live_timer) { |
28ab034a JG |
2663 | ret = config_writer_write_element_unsigned_int( |
2664 | writer, config_element_live_timer_interval, session->live_timer); | |
fb198a11 JG |
2665 | if (ret) { |
2666 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2667 | goto end; | |
2668 | } | |
2669 | } | |
ce6176f2 | 2670 | if (session->rotate_timer_period || session->rotate_size) { |
28ab034a | 2671 | ret = save_session_rotation_schedules(writer, session); |
329f3443 JD |
2672 | if (ret) { |
2673 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2674 | goto end; | |
2675 | } | |
2676 | } | |
fb198a11 JG |
2677 | |
2678 | /* /attributes */ | |
2679 | ret = config_writer_close_element(writer); | |
2680 | if (ret) { | |
2681 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2682 | goto end; | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | ret = save_session_output(writer, session); | |
55c9e7ca | 2687 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2688 | goto end; |
2689 | } | |
2690 | ||
2691 | /* /session */ | |
2692 | ret = config_writer_close_element(writer); | |
2693 | if (ret) { | |
2694 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2695 | goto end; | |
2696 | } | |
2697 | ||
2698 | /* /sessions */ | |
2699 | ret = config_writer_close_element(writer); | |
2700 | if (ret) { | |
2701 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2702 | goto end; | |
2703 | } | |
55c9e7ca JR |
2704 | |
2705 | ret = LTTNG_OK; | |
fb198a11 JG |
2706 | end: |
2707 | if (writer && config_writer_destroy(writer)) { | |
2708 | /* Preserve the original error code */ | |
55c9e7ca | 2709 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 2710 | } |
55c9e7ca | 2711 | if (ret != LTTNG_OK) { |
fb198a11 | 2712 | /* Delete file in case of error */ |
b45f9ad2 | 2713 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
2714 | PERROR("Unlinking XML session configuration."); |
2715 | } | |
2716 | } | |
2717 | ||
b45f9ad2 | 2718 | if (fd >= 0) { |
55c9e7ca JR |
2719 | int closeret; |
2720 | ||
2721 | closeret = close(fd); | |
2722 | if (closeret) { | |
1d12100d JR |
2723 | PERROR("Closing XML session configuration"); |
2724 | } | |
2725 | } | |
2726 | ||
fb198a11 JG |
2727 | return ret; |
2728 | } | |
2729 | ||
28ab034a | 2730 | int cmd_save_sessions(struct lttng_save_session_attr *attr, lttng_sock_cred *creds) |
fb198a11 JG |
2731 | { |
2732 | int ret; | |
2733 | const char *session_name; | |
2734 | struct ltt_session *session; | |
2735 | ||
2736 | session_lock_list(); | |
2737 | ||
2738 | session_name = lttng_save_session_attr_get_session_name(attr); | |
2739 | if (session_name) { | |
2740 | session = session_find_by_name(session_name); | |
2741 | if (!session) { | |
2742 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
2743 | goto end; | |
2744 | } | |
2745 | ||
2746 | session_lock(session); | |
2747 | ret = save_session(session, attr, creds); | |
2748 | session_unlock(session); | |
e32d7f27 | 2749 | session_put(session); |
55c9e7ca | 2750 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2751 | goto end; |
2752 | } | |
2753 | } else { | |
2754 | struct ltt_session_list *list = session_get_list(); | |
2755 | ||
28ab034a | 2756 | cds_list_for_each_entry (session, &list->head, list) { |
e32d7f27 JG |
2757 | if (!session_get(session)) { |
2758 | continue; | |
2759 | } | |
fb198a11 JG |
2760 | session_lock(session); |
2761 | ret = save_session(session, attr, creds); | |
2762 | session_unlock(session); | |
e32d7f27 | 2763 | session_put(session); |
fb198a11 | 2764 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 2765 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
2766 | goto end; |
2767 | } | |
2768 | } | |
2769 | } | |
2770 | ret = LTTNG_OK; | |
2771 | ||
2772 | end: | |
2773 | session_unlock_list(); | |
2774 | return ret; | |
2775 | } |