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) { | |
104 | struct lttng_channel_extended *ext = NULL; | |
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; | |
4fc2b126 | 132 | struct ltt_ust_channel *channel = NULL; |
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: | |
236 | instrumentation_string = NULL; | |
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 JG |
355 | default: |
356 | context_type_string = NULL; | |
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 JG |
432 | default: |
433 | context_type_string = NULL; | |
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: | |
455 | buffer_type_string = NULL; | |
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: | |
476 | loglevel_type_string = NULL; | |
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; | |
525 | symbol_name = addr ? NULL : event->event->u.kprobe.symbol_name; | |
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; | |
c1e83fb4 | 530 | symbol_name = addr ? NULL : event->event->u.kretprobe.symbol_name; |
83712c39 FD |
531 | break; |
532 | default: | |
a0377dfe | 533 | LTTNG_ASSERT(1); |
c1e83fb4 FD |
534 | ERR("Unsupported kernel instrumentation type."); |
535 | ret = LTTNG_ERR_INVALID; | |
536 | goto end; | |
83712c39 FD |
537 | } |
538 | ||
539 | ret = config_writer_open_element(writer, config_element_probe_attributes); | |
540 | if (ret) { | |
541 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
542 | goto end; | |
543 | } | |
544 | ||
c1e83fb4 | 545 | if (addr) { |
28ab034a JG |
546 | ret = config_writer_write_element_unsigned_int( |
547 | writer, config_element_address, addr); | |
c1e83fb4 FD |
548 | if (ret) { |
549 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
550 | goto end; | |
551 | } | |
552 | } else if (symbol_name) { | |
28ab034a JG |
553 | ret = config_writer_write_element_string( |
554 | writer, config_element_symbol_name, symbol_name); | |
83712c39 FD |
555 | if (ret) { |
556 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
557 | goto end; | |
558 | } | |
c1e83fb4 FD |
559 | /* If the offset is non-zero, write it.*/ |
560 | if (offset) { | |
28ab034a JG |
561 | ret = config_writer_write_element_unsigned_int( |
562 | writer, config_element_offset, offset); | |
c1e83fb4 FD |
563 | if (ret) { |
564 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
565 | goto end; | |
566 | } | |
567 | } | |
568 | } else { | |
569 | /* | |
570 | * This really should not happen as we are either setting the | |
571 | * address or the symbol above. | |
572 | */ | |
573 | ERR("Invalid probe/function description."); | |
574 | ret = LTTNG_ERR_INVALID; | |
575 | goto end; | |
83712c39 FD |
576 | } |
577 | ||
c1e83fb4 FD |
578 | ret = config_writer_close_element(writer); |
579 | if (ret) { | |
580 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
581 | goto end; | |
582 | } | |
583 | end: | |
584 | return ret; | |
585 | } | |
586 | ||
587 | /* | |
588 | * Save the userspace probe tracepoint event associated with the event to the | |
589 | * config writer. | |
590 | */ | |
28ab034a JG |
591 | static int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer, |
592 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
593 | { |
594 | int ret = 0; | |
595 | const char *probe_name, *provider_name, *binary_path; | |
87597c2c JG |
596 | const struct lttng_userspace_probe_location *userspace_probe_location; |
597 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
598 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
599 | ||
600 | /* Get userspace probe location from the event. */ | |
601 | userspace_probe_location = event->userspace_probe_location; | |
602 | if (!userspace_probe_location) { | |
603 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
604 | goto end; | |
605 | } | |
606 | ||
607 | /* Get lookup method and lookup method type. */ | |
608 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); | |
609 | if (!lookup_method) { | |
610 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
611 | goto end; | |
612 | } | |
613 | ||
614 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
615 | ||
616 | /* Get the binary path, probe name and provider name. */ | |
617 | binary_path = | |
28ab034a | 618 | lttng_userspace_probe_location_tracepoint_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
619 | if (!binary_path) { |
620 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
621 | goto end; | |
622 | } | |
623 | ||
624 | probe_name = | |
28ab034a | 625 | lttng_userspace_probe_location_tracepoint_get_probe_name(userspace_probe_location); |
c1e83fb4 FD |
626 | if (!probe_name) { |
627 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
628 | goto end; | |
629 | } | |
630 | ||
28ab034a JG |
631 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name( |
632 | userspace_probe_location); | |
c1e83fb4 FD |
633 | if (!provider_name) { |
634 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
635 | goto end; | |
636 | } | |
637 | ||
638 | /* Open a userspace probe tracepoint attribute. */ | |
28ab034a JG |
639 | ret = config_writer_open_element(writer, |
640 | config_element_userspace_probe_tracepoint_attributes); | |
c1e83fb4 FD |
641 | if (ret) { |
642 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
643 | goto end; | |
644 | } | |
645 | ||
646 | switch (lookup_type) { | |
647 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
28ab034a JG |
648 | ret = config_writer_write_element_string( |
649 | writer, | |
650 | config_element_userspace_probe_lookup, | |
651 | config_element_userspace_probe_lookup_tracepoint_sdt); | |
83712c39 FD |
652 | if (ret) { |
653 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
654 | goto end; | |
655 | } | |
c1e83fb4 FD |
656 | break; |
657 | default: | |
658 | ERR("Unsupported kernel userspace probe tracepoint lookup method."); | |
659 | ret = LTTNG_ERR_INVALID; | |
660 | goto end; | |
83712c39 FD |
661 | } |
662 | ||
c1e83fb4 | 663 | /* Write the binary path, provider name and the probe name. */ |
28ab034a JG |
664 | ret = config_writer_write_element_string( |
665 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
666 | if (ret) { |
667 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
668 | goto end; | |
669 | } | |
670 | ||
28ab034a JG |
671 | ret = config_writer_write_element_string( |
672 | writer, | |
673 | config_element_userspace_probe_tracepoint_location_provider_name, | |
674 | provider_name); | |
c1e83fb4 FD |
675 | if (ret) { |
676 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
677 | goto end; | |
678 | } | |
679 | ||
28ab034a JG |
680 | ret = config_writer_write_element_string( |
681 | writer, config_element_userspace_probe_tracepoint_location_probe_name, probe_name); | |
c1e83fb4 FD |
682 | if (ret) { |
683 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
684 | goto end; | |
685 | } | |
686 | ||
687 | /* Close the userspace probe tracepoint attribute. */ | |
688 | ret = config_writer_close_element(writer); | |
689 | if (ret) { | |
690 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
691 | goto end; | |
692 | } | |
693 | ||
694 | end: | |
695 | return ret; | |
696 | } | |
697 | ||
698 | /* | |
699 | * Save the userspace probe function event associated with the event to the | |
700 | * config writer. | |
701 | */ | |
28ab034a JG |
702 | static int save_kernel_userspace_probe_function_event(struct config_writer *writer, |
703 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
704 | { |
705 | int ret = 0; | |
706 | const char *function_name, *binary_path; | |
87597c2c JG |
707 | const struct lttng_userspace_probe_location *userspace_probe_location; |
708 | const struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
c1e83fb4 FD |
709 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; |
710 | ||
711 | /* Get userspace probe location from the event. */ | |
712 | userspace_probe_location = event->userspace_probe_location; | |
713 | if (!userspace_probe_location) { | |
714 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
715 | goto end; | |
716 | } | |
717 | ||
718 | /* Get lookup method and lookup method type. */ | |
28ab034a | 719 | lookup_method = lttng_userspace_probe_location_get_lookup_method(userspace_probe_location); |
c1e83fb4 FD |
720 | if (!lookup_method) { |
721 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
722 | goto end; | |
723 | } | |
724 | ||
725 | /* Get the binary path and the function name. */ | |
726 | binary_path = | |
28ab034a | 727 | lttng_userspace_probe_location_function_get_binary_path(userspace_probe_location); |
c1e83fb4 FD |
728 | if (!binary_path) { |
729 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
730 | goto end; | |
731 | } | |
732 | ||
733 | function_name = | |
28ab034a | 734 | lttng_userspace_probe_location_function_get_function_name(userspace_probe_location); |
c1e83fb4 FD |
735 | if (!function_name) { |
736 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
737 | goto end; | |
738 | } | |
739 | ||
740 | /* Open a userspace probe function attribute. */ | |
741 | ret = config_writer_open_element(writer, | |
28ab034a | 742 | config_element_userspace_probe_function_attributes); |
c1e83fb4 FD |
743 | if (ret) { |
744 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
745 | goto end; | |
746 | } | |
747 | ||
748 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method); | |
749 | switch (lookup_type) { | |
750 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
28ab034a JG |
751 | ret = config_writer_write_element_string( |
752 | writer, | |
753 | config_element_userspace_probe_lookup, | |
754 | config_element_userspace_probe_lookup_function_elf); | |
83712c39 FD |
755 | if (ret) { |
756 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
757 | goto end; | |
758 | } | |
c1e83fb4 FD |
759 | break; |
760 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
28ab034a JG |
761 | ret = config_writer_write_element_string( |
762 | writer, | |
763 | config_element_userspace_probe_lookup, | |
764 | config_element_userspace_probe_lookup_function_default); | |
c1e83fb4 FD |
765 | if (ret) { |
766 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
767 | goto end; | |
768 | } | |
769 | break; | |
770 | default: | |
771 | ERR("Unsupported kernel userspace probe function lookup method."); | |
772 | ret = LTTNG_ERR_INVALID; | |
773 | goto end; | |
83712c39 FD |
774 | } |
775 | ||
c1e83fb4 | 776 | /* Write the binary path and the function name. */ |
28ab034a JG |
777 | ret = config_writer_write_element_string( |
778 | writer, config_element_userspace_probe_location_binary_path, binary_path); | |
c1e83fb4 FD |
779 | if (ret) { |
780 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
781 | goto end; | |
782 | } | |
783 | ||
28ab034a JG |
784 | ret = config_writer_write_element_string( |
785 | writer, | |
786 | config_element_userspace_probe_function_location_function_name, | |
787 | function_name); | |
c1e83fb4 FD |
788 | if (ret) { |
789 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
790 | goto end; | |
791 | } | |
792 | ||
793 | /* Close the userspace probe function attribute. */ | |
83712c39 FD |
794 | ret = config_writer_close_element(writer); |
795 | if (ret) { | |
796 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
797 | goto end; | |
798 | } | |
c1e83fb4 | 799 | |
83712c39 FD |
800 | end: |
801 | return ret; | |
802 | } | |
c1e83fb4 | 803 | |
28ab034a JG |
804 | static int save_kernel_userspace_probe_event(struct config_writer *writer, |
805 | struct ltt_kernel_event *event) | |
c1e83fb4 FD |
806 | { |
807 | int ret; | |
808 | struct lttng_userspace_probe_location *userspace_probe_location; | |
809 | ||
810 | /* Get userspace probe location from the event. */ | |
811 | userspace_probe_location = event->userspace_probe_location; | |
812 | if (!userspace_probe_location) { | |
813 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
814 | goto end; | |
815 | } | |
816 | ||
28ab034a | 817 | switch (lttng_userspace_probe_location_get_type(userspace_probe_location)) { |
c1e83fb4 FD |
818 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: |
819 | { | |
820 | ret = save_kernel_userspace_probe_function_event(writer, event); | |
821 | if (ret) { | |
822 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
823 | goto end; | |
824 | } | |
825 | break; | |
826 | } | |
827 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
828 | { | |
829 | ret = save_kernel_userspace_probe_tracepoint_event(writer, event); | |
830 | if (ret) { | |
831 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
832 | goto end; | |
833 | } | |
834 | break; | |
835 | } | |
836 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN: | |
837 | default: | |
838 | ERR("Unsupported kernel userspace probe location type."); | |
839 | ret = LTTNG_ERR_INVALID; | |
840 | goto end; | |
841 | } | |
842 | ||
843 | end: | |
844 | return ret; | |
845 | } | |
846 | ||
28ab034a | 847 | static int save_kernel_event(struct config_writer *writer, struct ltt_kernel_event *event) |
fb198a11 JG |
848 | { |
849 | int ret; | |
850 | const char *instrumentation_type; | |
851 | ||
852 | ret = config_writer_open_element(writer, config_element_event); | |
853 | if (ret) { | |
854 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
855 | goto end; | |
856 | } | |
857 | ||
858 | if (event->event->name[0]) { | |
28ab034a JG |
859 | ret = config_writer_write_element_string( |
860 | writer, config_element_name, event->event->name); | |
fb198a11 JG |
861 | if (ret) { |
862 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
863 | goto end; | |
864 | } | |
865 | } | |
866 | ||
28ab034a | 867 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
868 | if (ret) { |
869 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
870 | goto end; | |
871 | } | |
872 | ||
28ab034a | 873 | instrumentation_type = get_kernel_instrumentation_string(event->event->instrumentation); |
fb198a11 JG |
874 | if (!instrumentation_type) { |
875 | ret = LTTNG_ERR_INVALID; | |
876 | goto end; | |
877 | } | |
878 | ||
28ab034a | 879 | ret = config_writer_write_element_string(writer, config_element_type, instrumentation_type); |
fb198a11 JG |
880 | if (ret) { |
881 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
882 | goto end; | |
883 | } | |
884 | ||
911d1560 | 885 | if (event->filter_expression) { |
28ab034a JG |
886 | ret = config_writer_write_element_string( |
887 | writer, config_element_filter, event->filter_expression); | |
911d1560 JG |
888 | if (ret) { |
889 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
890 | goto end; | |
891 | } | |
892 | } | |
893 | ||
b8e2fb80 | 894 | if (event->event->instrumentation == LTTNG_KERNEL_ABI_FUNCTION || |
28ab034a JG |
895 | event->event->instrumentation == LTTNG_KERNEL_ABI_KPROBE || |
896 | event->event->instrumentation == LTTNG_KERNEL_ABI_UPROBE || | |
897 | event->event->instrumentation == LTTNG_KERNEL_ABI_KRETPROBE) { | |
898 | ret = config_writer_open_element(writer, config_element_attributes); | |
fb198a11 JG |
899 | if (ret) { |
900 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
901 | goto end; | |
902 | } | |
903 | ||
904 | switch (event->event->instrumentation) { | |
b8e2fb80 FD |
905 | case LTTNG_KERNEL_ABI_SYSCALL: |
906 | case LTTNG_KERNEL_ABI_FUNCTION: | |
83712c39 | 907 | ret = save_kernel_function_event(writer, event); |
fb198a11 | 908 | if (ret) { |
fb198a11 JG |
909 | goto end; |
910 | } | |
911 | break; | |
b8e2fb80 FD |
912 | case LTTNG_KERNEL_ABI_KPROBE: |
913 | case LTTNG_KERNEL_ABI_KRETPROBE: | |
83712c39 | 914 | ret = save_kernel_kprobe_event(writer, event); |
fb198a11 | 915 | if (ret) { |
fb198a11 JG |
916 | goto end; |
917 | } | |
918 | break; | |
b8e2fb80 | 919 | case LTTNG_KERNEL_ABI_UPROBE: |
c1e83fb4 FD |
920 | ret = save_kernel_userspace_probe_event(writer, event); |
921 | if (ret) { | |
922 | goto end; | |
923 | } | |
924 | break; | |
fb198a11 JG |
925 | default: |
926 | ERR("Unsupported kernel instrumentation type."); | |
927 | ret = LTTNG_ERR_INVALID; | |
928 | goto end; | |
929 | } | |
930 | ||
931 | /* /attributes */ | |
932 | ret = config_writer_close_element(writer); | |
933 | if (ret) { | |
934 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
935 | goto end; | |
936 | } | |
937 | } | |
938 | ||
939 | /* /event */ | |
940 | ret = config_writer_close_element(writer); | |
941 | if (ret) { | |
942 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
943 | goto end; | |
944 | } | |
55c9e7ca JR |
945 | |
946 | ret = LTTNG_OK; | |
fb198a11 JG |
947 | end: |
948 | return ret; | |
949 | } | |
950 | ||
55c9e7ca | 951 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 952 | static int save_kernel_events(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
953 | { |
954 | int ret; | |
955 | struct ltt_kernel_event *event; | |
956 | ||
957 | ret = config_writer_open_element(writer, config_element_events); | |
958 | if (ret) { | |
959 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
960 | goto end; | |
961 | } | |
962 | ||
28ab034a | 963 | cds_list_for_each_entry (event, &kchan->events_list.head, list) { |
fb198a11 | 964 | ret = save_kernel_event(writer, event); |
55c9e7ca | 965 | if (ret != LTTNG_OK) { |
fb198a11 JG |
966 | goto end; |
967 | } | |
968 | } | |
969 | ||
970 | /* /events */ | |
971 | ret = config_writer_close_element(writer); | |
972 | if (ret) { | |
973 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
974 | goto end; | |
975 | } | |
55c9e7ca JR |
976 | |
977 | ret = LTTNG_OK; | |
fb198a11 JG |
978 | end: |
979 | return ret; | |
980 | } | |
981 | ||
55c9e7ca | 982 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 983 | static int save_ust_event(struct config_writer *writer, struct ltt_ust_event *event) |
fb198a11 JG |
984 | { |
985 | int ret; | |
986 | const char *loglevel_type_string; | |
987 | ||
988 | ret = config_writer_open_element(writer, config_element_event); | |
989 | if (ret) { | |
990 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
991 | goto end; | |
992 | } | |
993 | ||
994 | if (event->attr.name[0]) { | |
28ab034a JG |
995 | ret = config_writer_write_element_string( |
996 | writer, config_element_name, event->attr.name); | |
fb198a11 JG |
997 | if (ret) { |
998 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
999 | goto end; | |
1000 | } | |
1001 | } | |
1002 | ||
28ab034a | 1003 | ret = config_writer_write_element_bool(writer, config_element_enabled, event->enabled); |
fb198a11 JG |
1004 | if (ret) { |
1005 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1006 | goto end; | |
1007 | } | |
1008 | ||
fc4b93fa | 1009 | if (event->attr.instrumentation != LTTNG_UST_ABI_TRACEPOINT) { |
fb198a11 JG |
1010 | ERR("Unsupported UST instrumentation type."); |
1011 | ret = LTTNG_ERR_INVALID; | |
1012 | goto end; | |
1013 | } | |
28ab034a JG |
1014 | ret = config_writer_write_element_string( |
1015 | writer, config_element_type, config_event_type_tracepoint); | |
fb198a11 JG |
1016 | if (ret) { |
1017 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1018 | goto end; | |
1019 | } | |
1020 | ||
28ab034a JG |
1021 | loglevel_type_string = |
1022 | get_loglevel_type_string((lttng_ust_abi_loglevel_type) event->attr.loglevel_type); | |
fb198a11 JG |
1023 | if (!loglevel_type_string) { |
1024 | ERR("Unsupported UST loglevel type."); | |
1025 | ret = LTTNG_ERR_INVALID; | |
1026 | goto end; | |
1027 | } | |
1028 | ||
28ab034a JG |
1029 | ret = config_writer_write_element_string( |
1030 | writer, config_element_loglevel_type, loglevel_type_string); | |
fb198a11 JG |
1031 | if (ret) { |
1032 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1033 | goto end; | |
1034 | } | |
1035 | ||
1adbdb10 | 1036 | /* The log level is irrelevant if no "filtering" is enabled */ |
fc4b93fa | 1037 | if (event->attr.loglevel_type != LTTNG_UST_ABI_LOGLEVEL_ALL) { |
28ab034a JG |
1038 | ret = config_writer_write_element_signed_int( |
1039 | writer, config_element_loglevel, event->attr.loglevel); | |
1adbdb10 JG |
1040 | if (ret) { |
1041 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1042 | goto end; | |
1043 | } | |
fb198a11 JG |
1044 | } |
1045 | ||
1046 | if (event->filter_expression) { | |
28ab034a JG |
1047 | ret = config_writer_write_element_string( |
1048 | writer, config_element_filter, event->filter_expression); | |
fb198a11 JG |
1049 | if (ret) { |
1050 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1051 | goto end; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (event->exclusion && event->exclusion->count) { | |
1056 | uint32_t i; | |
1057 | ||
28ab034a | 1058 | ret = config_writer_open_element(writer, config_element_exclusions); |
fb198a11 JG |
1059 | if (ret) { |
1060 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1061 | goto end; | |
1062 | } | |
1063 | ||
1064 | for (i = 0; i < event->exclusion->count; i++) { | |
28ab034a JG |
1065 | ret = config_writer_write_element_string( |
1066 | writer, | |
fb198a11 | 1067 | config_element_exclusion, |
28ab034a | 1068 | LTTNG_EVENT_EXCLUSION_NAME_AT(event->exclusion, i)); |
fb198a11 JG |
1069 | if (ret) { |
1070 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1071 | goto end; | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | /* /exclusions */ | |
1076 | ret = config_writer_close_element(writer); | |
1077 | if (ret) { | |
1078 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1079 | goto end; | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | /* /event */ | |
1084 | ret = config_writer_close_element(writer); | |
1085 | if (ret) { | |
1086 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1087 | goto end; | |
1088 | } | |
55c9e7ca JR |
1089 | |
1090 | ret = LTTNG_OK; | |
fb198a11 JG |
1091 | end: |
1092 | return ret; | |
1093 | } | |
1094 | ||
55c9e7ca | 1095 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1096 | static int save_ust_events(struct config_writer *writer, struct lttng_ht *events) |
fb198a11 JG |
1097 | { |
1098 | int ret; | |
1099 | struct ltt_ust_event *event; | |
1100 | struct lttng_ht_node_str *node; | |
1101 | struct lttng_ht_iter iter; | |
1102 | ||
1103 | ret = config_writer_open_element(writer, config_element_events); | |
1104 | if (ret) { | |
1105 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1106 | goto end; | |
1107 | } | |
1108 | ||
1109 | rcu_read_lock(); | |
28ab034a | 1110 | cds_lfht_for_each_entry (events->ht, &iter.iter, node, node) { |
0114db0e | 1111 | event = lttng::utils::container_of(node, <t_ust_event::node); |
fb198a11 | 1112 | |
af325ba1 JG |
1113 | if (event->internal) { |
1114 | /* Internal events must not be exposed to clients */ | |
1115 | continue; | |
1116 | } | |
fb198a11 | 1117 | ret = save_ust_event(writer, event); |
55c9e7ca | 1118 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1119 | rcu_read_unlock(); |
1120 | goto end; | |
1121 | } | |
1122 | } | |
1123 | rcu_read_unlock(); | |
1124 | ||
1125 | /* /events */ | |
1126 | ret = config_writer_close_element(writer); | |
1127 | if (ret) { | |
1128 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1129 | goto end; | |
1130 | } | |
55c9e7ca JR |
1131 | |
1132 | ret = LTTNG_OK; | |
fb198a11 JG |
1133 | end: |
1134 | return ret; | |
1135 | } | |
1136 | ||
55c9e7ca | 1137 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1138 | static int init_ust_event_from_agent_event(struct ltt_ust_event *ust_event, |
1139 | struct agent_event *agent_event) | |
51755dc8 | 1140 | { |
55c9e7ca | 1141 | int ret; |
fc4b93fa | 1142 | enum lttng_ust_abi_loglevel_type ust_loglevel_type; |
0b35b846 | 1143 | |
44760c20 | 1144 | ust_event->enabled = AGENT_EVENT_IS_ENABLED(agent_event); |
fc4b93fa | 1145 | ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
28ab034a | 1146 | if (lttng_strncpy(ust_event->attr.name, agent_event->name, LTTNG_SYMBOL_NAME_LEN)) { |
55c9e7ca | 1147 | ret = LTTNG_ERR_INVALID; |
d333bdaa MD |
1148 | goto end; |
1149 | } | |
0b35b846 JG |
1150 | switch (agent_event->loglevel_type) { |
1151 | case LTTNG_EVENT_LOGLEVEL_ALL: | |
fc4b93fa | 1152 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
0b35b846 JG |
1153 | break; |
1154 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 1155 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
0b35b846 JG |
1156 | break; |
1157 | case LTTNG_EVENT_LOGLEVEL_RANGE: | |
fc4b93fa | 1158 | ust_loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
0b35b846 JG |
1159 | break; |
1160 | default: | |
1161 | ERR("Invalid agent_event loglevel_type."); | |
55c9e7ca | 1162 | ret = LTTNG_ERR_INVALID; |
0b35b846 JG |
1163 | goto end; |
1164 | } | |
1165 | ||
1166 | ust_event->attr.loglevel_type = ust_loglevel_type; | |
2106efa0 | 1167 | ust_event->attr.loglevel = agent_event->loglevel_value; |
51755dc8 JG |
1168 | ust_event->filter_expression = agent_event->filter_expression; |
1169 | ust_event->exclusion = agent_event->exclusion; | |
55c9e7ca JR |
1170 | |
1171 | ret = LTTNG_OK; | |
0b35b846 JG |
1172 | end: |
1173 | return ret; | |
51755dc8 JG |
1174 | } |
1175 | ||
55c9e7ca | 1176 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1177 | static int save_agent_events(struct config_writer *writer, struct agent *agent) |
51755dc8 JG |
1178 | { |
1179 | int ret; | |
1180 | struct lttng_ht_iter iter; | |
1181 | struct lttng_ht_node_str *node; | |
1182 | ||
1183 | ret = config_writer_open_element(writer, config_element_events); | |
1184 | if (ret) { | |
1185 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1186 | goto end; | |
1187 | } | |
1188 | ||
1189 | rcu_read_lock(); | |
28ab034a | 1190 | cds_lfht_for_each_entry (agent->events->ht, &iter.iter, node, node) { |
51755dc8 JG |
1191 | struct agent_event *agent_event; |
1192 | struct ltt_ust_event fake_event; | |
1193 | ||
1194 | memset(&fake_event, 0, sizeof(fake_event)); | |
0114db0e | 1195 | agent_event = lttng::utils::container_of(node, &agent_event::node); |
51755dc8 JG |
1196 | |
1197 | /* | |
1198 | * Initialize a fake ust event to reuse the same serialization | |
1199 | * function since UST and agent events contain the same info | |
1200 | * (and one could wonder why they don't reuse the same | |
1201 | * structures...). | |
1202 | */ | |
0b35b846 | 1203 | ret = init_ust_event_from_agent_event(&fake_event, agent_event); |
55c9e7ca | 1204 | if (ret != LTTNG_OK) { |
0b35b846 JG |
1205 | rcu_read_unlock(); |
1206 | goto end; | |
1207 | } | |
51755dc8 | 1208 | ret = save_ust_event(writer, &fake_event); |
55c9e7ca | 1209 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1210 | rcu_read_unlock(); |
1211 | goto end; | |
1212 | } | |
1213 | } | |
1214 | rcu_read_unlock(); | |
1215 | ||
1216 | /* /events */ | |
1217 | ret = config_writer_close_element(writer); | |
1218 | if (ret) { | |
1219 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1220 | goto end; | |
1221 | } | |
55c9e7ca JR |
1222 | |
1223 | ret = LTTNG_OK; | |
51755dc8 JG |
1224 | end: |
1225 | return ret; | |
1226 | } | |
1227 | ||
55c9e7ca | 1228 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1229 | static int save_kernel_context(struct config_writer *writer, struct lttng_kernel_abi_context *ctx) |
fb198a11 | 1230 | { |
55c9e7ca | 1231 | int ret = LTTNG_OK; |
fb198a11 JG |
1232 | |
1233 | if (!ctx) { | |
1234 | goto end; | |
1235 | } | |
1236 | ||
fb198a11 JG |
1237 | ret = config_writer_open_element(writer, config_element_context); |
1238 | if (ret) { | |
1239 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1240 | goto end; | |
1241 | } | |
1242 | ||
b8e2fb80 | 1243 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
28ab034a | 1244 | ret = config_writer_open_element(writer, config_element_context_perf); |
fb198a11 JG |
1245 | if (ret) { |
1246 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1247 | goto end; | |
1248 | } | |
1249 | ||
28ab034a JG |
1250 | ret = config_writer_write_element_unsigned_int( |
1251 | writer, config_element_type, ctx->u.perf_counter.type); | |
fb198a11 JG |
1252 | if (ret) { |
1253 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1254 | goto end; | |
1255 | } | |
1256 | ||
28ab034a JG |
1257 | ret = config_writer_write_element_unsigned_int( |
1258 | writer, config_element_config, ctx->u.perf_counter.config); | |
fb198a11 JG |
1259 | if (ret) { |
1260 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1261 | goto end; | |
1262 | } | |
1263 | ||
28ab034a JG |
1264 | ret = config_writer_write_element_string( |
1265 | writer, config_element_name, ctx->u.perf_counter.name); | |
fb198a11 JG |
1266 | if (ret) { |
1267 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1268 | goto end; | |
1269 | } | |
1270 | ||
1271 | /* /perf */ | |
1272 | ret = config_writer_close_element(writer); | |
1273 | if (ret) { | |
1274 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1275 | goto end; | |
1276 | } | |
1277 | } else { | |
28ab034a | 1278 | const char *context_type_string = get_kernel_context_type_string(ctx->ctx); |
fb198a11 JG |
1279 | |
1280 | if (!context_type_string) { | |
1281 | ERR("Unsupported kernel context type."); | |
1282 | ret = LTTNG_ERR_INVALID; | |
1283 | goto end; | |
1284 | } | |
1285 | ||
28ab034a JG |
1286 | ret = config_writer_write_element_string( |
1287 | writer, config_element_type, context_type_string); | |
fb198a11 JG |
1288 | if (ret) { |
1289 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1290 | goto end; | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | /* /context */ | |
1295 | ret = config_writer_close_element(writer); | |
1296 | if (ret) { | |
1297 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1298 | goto end; | |
1299 | } | |
1300 | ||
55c9e7ca | 1301 | ret = LTTNG_OK; |
645328ae DG |
1302 | end: |
1303 | return ret; | |
1304 | } | |
1305 | ||
55c9e7ca | 1306 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1307 | static int save_kernel_contexts(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
645328ae DG |
1308 | { |
1309 | int ret; | |
1310 | struct ltt_kernel_context *ctx; | |
1311 | ||
2aa64052 | 1312 | if (cds_list_empty(&kchan->ctx_list)) { |
55c9e7ca | 1313 | ret = LTTNG_OK; |
2aa64052 JG |
1314 | goto end; |
1315 | } | |
1316 | ||
645328ae DG |
1317 | ret = config_writer_open_element(writer, config_element_contexts); |
1318 | if (ret) { | |
1319 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1320 | goto end; | |
1321 | } | |
1322 | ||
28ab034a | 1323 | cds_list_for_each_entry (ctx, &kchan->ctx_list, list) { |
645328ae | 1324 | ret = save_kernel_context(writer, &ctx->ctx); |
55c9e7ca | 1325 | if (ret != LTTNG_OK) { |
645328ae DG |
1326 | goto end; |
1327 | } | |
1328 | } | |
1329 | ||
fb198a11 JG |
1330 | /* /contexts */ |
1331 | ret = config_writer_close_element(writer); | |
1332 | if (ret) { | |
1333 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1334 | goto end; | |
1335 | } | |
55c9e7ca JR |
1336 | |
1337 | ret = LTTNG_OK; | |
fb198a11 JG |
1338 | end: |
1339 | return ret; | |
1340 | } | |
1341 | ||
55c9e7ca | 1342 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1343 | static int save_ust_context_perf_thread_counter(struct config_writer *writer, |
1344 | struct ltt_ust_context *ctx) | |
045fc617 JG |
1345 | { |
1346 | int ret; | |
1347 | ||
a0377dfe FD |
1348 | LTTNG_ASSERT(writer); |
1349 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1350 | |
1351 | /* Perf contexts are saved as event_perf_context_type */ | |
1352 | ret = config_writer_open_element(writer, config_element_context_perf); | |
1353 | if (ret) { | |
1354 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1355 | goto end; | |
1356 | } | |
1357 | ||
28ab034a JG |
1358 | ret = config_writer_write_element_unsigned_int( |
1359 | writer, config_element_type, ctx->ctx.u.perf_counter.type); | |
045fc617 JG |
1360 | if (ret) { |
1361 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1362 | goto end; | |
1363 | } | |
1364 | ||
28ab034a JG |
1365 | ret = config_writer_write_element_unsigned_int( |
1366 | writer, config_element_config, ctx->ctx.u.perf_counter.config); | |
045fc617 JG |
1367 | if (ret) { |
1368 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1369 | goto end; | |
1370 | } | |
1371 | ||
28ab034a JG |
1372 | ret = config_writer_write_element_string( |
1373 | writer, config_element_name, ctx->ctx.u.perf_counter.name); | |
045fc617 JG |
1374 | if (ret) { |
1375 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1376 | goto end; | |
1377 | } | |
1378 | ||
1379 | /* /perf */ | |
1380 | ret = config_writer_close_element(writer); | |
1381 | if (ret) { | |
1382 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1383 | goto end; | |
1384 | } | |
55c9e7ca JR |
1385 | |
1386 | ret = LTTNG_OK; | |
045fc617 JG |
1387 | end: |
1388 | return ret; | |
1389 | } | |
1390 | ||
55c9e7ca | 1391 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1392 | static int save_ust_context_app_ctx(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1393 | { |
1394 | int ret; | |
1395 | ||
a0377dfe FD |
1396 | LTTNG_ASSERT(writer); |
1397 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1398 | |
1399 | /* Application contexts are saved as application_context_type */ | |
1400 | ret = config_writer_open_element(writer, config_element_context_app); | |
1401 | if (ret) { | |
1402 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1403 | goto end; | |
1404 | } | |
1405 | ||
28ab034a JG |
1406 | ret = config_writer_write_element_string( |
1407 | writer, config_element_context_app_provider_name, ctx->ctx.u.app_ctx.provider_name); | |
045fc617 JG |
1408 | if (ret) { |
1409 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1410 | goto end; | |
1411 | } | |
1412 | ||
28ab034a JG |
1413 | ret = config_writer_write_element_string( |
1414 | writer, config_element_context_app_ctx_name, ctx->ctx.u.app_ctx.ctx_name); | |
045fc617 JG |
1415 | if (ret) { |
1416 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1417 | goto end; | |
1418 | } | |
1419 | ||
1420 | /* /app */ | |
1421 | ret = config_writer_close_element(writer); | |
1422 | if (ret) { | |
1423 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1424 | goto end; | |
1425 | } | |
55c9e7ca JR |
1426 | |
1427 | ret = LTTNG_OK; | |
045fc617 JG |
1428 | end: |
1429 | return ret; | |
1430 | } | |
1431 | ||
55c9e7ca | 1432 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1433 | static int save_ust_context_generic(struct config_writer *writer, struct ltt_ust_context *ctx) |
045fc617 JG |
1434 | { |
1435 | int ret; | |
1436 | const char *context_type_string; | |
1437 | ||
a0377dfe FD |
1438 | LTTNG_ASSERT(writer); |
1439 | LTTNG_ASSERT(ctx); | |
045fc617 JG |
1440 | |
1441 | /* Save context as event_context_type_type */ | |
28ab034a | 1442 | context_type_string = get_ust_context_type_string(ctx->ctx.ctx); |
045fc617 JG |
1443 | if (!context_type_string) { |
1444 | ERR("Unsupported UST context type."); | |
1445 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1446 | goto end; | |
1447 | } | |
1448 | ||
28ab034a | 1449 | ret = config_writer_write_element_string(writer, config_element_type, context_type_string); |
045fc617 JG |
1450 | if (ret) { |
1451 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1452 | goto end; | |
1453 | } | |
55c9e7ca JR |
1454 | |
1455 | ret = LTTNG_OK; | |
045fc617 JG |
1456 | end: |
1457 | return ret; | |
1458 | } | |
1459 | ||
55c9e7ca | 1460 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1461 | static int save_ust_context(struct config_writer *writer, struct cds_list_head *ctx_list) |
fb198a11 JG |
1462 | { |
1463 | int ret; | |
1464 | struct ltt_ust_context *ctx; | |
1465 | ||
a0377dfe FD |
1466 | LTTNG_ASSERT(writer); |
1467 | LTTNG_ASSERT(ctx_list); | |
fb198a11 JG |
1468 | |
1469 | ret = config_writer_open_element(writer, config_element_contexts); | |
1470 | if (ret) { | |
1471 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1472 | goto end; | |
1473 | } | |
1474 | ||
28ab034a JG |
1475 | cds_list_for_each_entry (ctx, ctx_list, list) { |
1476 | ret = config_writer_open_element(writer, config_element_context); | |
fb198a11 JG |
1477 | if (ret) { |
1478 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1479 | goto end; | |
1480 | } | |
1481 | ||
045fc617 | 1482 | switch (ctx->ctx.ctx) { |
fc4b93fa | 1483 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
045fc617 JG |
1484 | ret = save_ust_context_perf_thread_counter(writer, ctx); |
1485 | break; | |
fc4b93fa | 1486 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
045fc617 JG |
1487 | ret = save_ust_context_app_ctx(writer, ctx); |
1488 | break; | |
1489 | default: | |
1490 | /* Save generic context. */ | |
1491 | ret = save_ust_context_generic(writer, ctx); | |
1492 | } | |
55c9e7ca | 1493 | if (ret != LTTNG_OK) { |
045fc617 | 1494 | goto end; |
fb198a11 JG |
1495 | } |
1496 | ||
1497 | /* /context */ | |
1498 | ret = config_writer_close_element(writer); | |
1499 | if (ret) { | |
1500 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1501 | goto end; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | /* /contexts */ | |
1506 | ret = config_writer_close_element(writer); | |
1507 | if (ret) { | |
1508 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1509 | goto end; | |
1510 | } | |
55c9e7ca JR |
1511 | |
1512 | ret = LTTNG_OK; | |
fb198a11 JG |
1513 | end: |
1514 | return ret; | |
1515 | } | |
1516 | ||
55c9e7ca | 1517 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1518 | static int save_kernel_channel(struct config_writer *writer, struct ltt_kernel_channel *kchan) |
fb198a11 JG |
1519 | { |
1520 | int ret; | |
1521 | ||
a0377dfe FD |
1522 | LTTNG_ASSERT(writer); |
1523 | LTTNG_ASSERT(kchan); | |
fb198a11 JG |
1524 | |
1525 | ret = config_writer_open_element(writer, config_element_channel); | |
1526 | if (ret) { | |
1527 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1528 | goto end; | |
1529 | } | |
1530 | ||
28ab034a | 1531 | ret = config_writer_write_element_string(writer, config_element_name, kchan->channel->name); |
fb198a11 JG |
1532 | if (ret) { |
1533 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1534 | goto end; | |
1535 | } | |
1536 | ||
28ab034a JG |
1537 | ret = config_writer_write_element_bool( |
1538 | writer, config_element_enabled, kchan->channel->enabled); | |
fb198a11 JG |
1539 | if (ret) { |
1540 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1541 | goto end; | |
1542 | } | |
1543 | ||
1544 | ret = save_kernel_channel_attributes(writer, &kchan->channel->attr); | |
55c9e7ca | 1545 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1546 | goto end; |
1547 | } | |
1548 | ||
0de3eda1 | 1549 | ret = save_kernel_events(writer, kchan); |
55c9e7ca | 1550 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1551 | goto end; |
1552 | } | |
1553 | ||
645328ae | 1554 | ret = save_kernel_contexts(writer, kchan); |
55c9e7ca | 1555 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1556 | goto end; |
1557 | } | |
1558 | ||
1559 | /* /channel */ | |
1560 | ret = config_writer_close_element(writer); | |
1561 | if (ret) { | |
1562 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1563 | goto end; | |
1564 | } | |
55c9e7ca JR |
1565 | |
1566 | ret = LTTNG_OK; | |
fb198a11 JG |
1567 | end: |
1568 | return ret; | |
1569 | } | |
1570 | ||
55c9e7ca | 1571 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1572 | static int save_ust_channel(struct config_writer *writer, |
1573 | struct ltt_ust_channel *ust_chan, | |
1574 | struct ltt_ust_session *session) | |
fb198a11 JG |
1575 | { |
1576 | int ret; | |
1577 | ||
a0377dfe FD |
1578 | LTTNG_ASSERT(writer); |
1579 | LTTNG_ASSERT(ust_chan); | |
1580 | LTTNG_ASSERT(session); | |
fb198a11 JG |
1581 | |
1582 | ret = config_writer_open_element(writer, config_element_channel); | |
1583 | if (ret) { | |
1584 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1585 | goto end; | |
1586 | } | |
1587 | ||
28ab034a | 1588 | ret = config_writer_write_element_string(writer, config_element_name, ust_chan->name); |
fb198a11 JG |
1589 | if (ret) { |
1590 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1591 | goto end; | |
1592 | } | |
1593 | ||
28ab034a | 1594 | ret = config_writer_write_element_bool(writer, config_element_enabled, ust_chan->enabled); |
fb198a11 JG |
1595 | if (ret) { |
1596 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1597 | goto end; | |
1598 | } | |
1599 | ||
1600 | ret = save_ust_channel_attributes(writer, &ust_chan->attr); | |
55c9e7ca | 1601 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1602 | goto end; |
1603 | } | |
1604 | ||
28ab034a JG |
1605 | ret = config_writer_write_element_unsigned_int( |
1606 | writer, config_element_tracefile_size, ust_chan->tracefile_size); | |
fb198a11 JG |
1607 | if (ret) { |
1608 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1609 | goto end; | |
1610 | } | |
1611 | ||
28ab034a JG |
1612 | ret = config_writer_write_element_unsigned_int( |
1613 | writer, config_element_tracefile_count, ust_chan->tracefile_count); | |
fb198a11 JG |
1614 | if (ret) { |
1615 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1616 | goto end; | |
1617 | } | |
1618 | ||
28ab034a JG |
1619 | ret = config_writer_write_element_unsigned_int( |
1620 | writer, config_element_live_timer_interval, session->live_timer_interval); | |
fb198a11 JG |
1621 | if (ret) { |
1622 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1623 | goto end; | |
1624 | } | |
1625 | ||
51755dc8 JG |
1626 | if (ust_chan->domain == LTTNG_DOMAIN_UST) { |
1627 | ret = save_ust_events(writer, ust_chan->events); | |
55c9e7ca | 1628 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1629 | goto end; |
1630 | } | |
1631 | } else { | |
1632 | struct agent *agent = NULL; | |
1633 | ||
1634 | agent = trace_ust_find_agent(session, ust_chan->domain); | |
1635 | if (!agent) { | |
1636 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1637 | ERR("Could not find agent associated to UST subdomain"); | |
1638 | goto end; | |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * Channels associated with a UST sub-domain (such as JUL, Log4j | |
1643 | * or Python) don't have any non-internal events. We retrieve | |
1644 | * the "agent" events associated with this channel and serialize | |
1645 | * them. | |
1646 | */ | |
8cd0a98d | 1647 | ret = save_agent_events(writer, agent); |
55c9e7ca | 1648 | if (ret != LTTNG_OK) { |
51755dc8 JG |
1649 | goto end; |
1650 | } | |
fb198a11 JG |
1651 | } |
1652 | ||
1653 | ret = save_ust_context(writer, &ust_chan->ctx_list); | |
55c9e7ca | 1654 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1655 | goto end; |
1656 | } | |
1657 | ||
1658 | /* /channel */ | |
1659 | ret = config_writer_close_element(writer); | |
1660 | if (ret) { | |
1661 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1662 | goto end; | |
1663 | } | |
55c9e7ca JR |
1664 | |
1665 | ret = LTTNG_OK; | |
fb198a11 JG |
1666 | end: |
1667 | return ret; | |
1668 | } | |
1669 | ||
55c9e7ca | 1670 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 1671 | static int save_kernel_session(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
1672 | { |
1673 | int ret; | |
1674 | struct ltt_kernel_channel *kchan; | |
1675 | ||
a0377dfe FD |
1676 | LTTNG_ASSERT(writer); |
1677 | LTTNG_ASSERT(session); | |
fb198a11 | 1678 | |
28ab034a JG |
1679 | ret = config_writer_write_element_string( |
1680 | writer, config_element_type, config_domain_type_kernel); | |
fb198a11 JG |
1681 | if (ret) { |
1682 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1683 | goto end; | |
1684 | } | |
1685 | ||
28ab034a JG |
1686 | ret = config_writer_write_element_string( |
1687 | writer, config_element_buffer_type, config_buffer_type_global); | |
fb198a11 JG |
1688 | if (ret) { |
1689 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1690 | goto end; | |
1691 | } | |
1692 | ||
28ab034a | 1693 | ret = config_writer_open_element(writer, config_element_channels); |
fb198a11 JG |
1694 | if (ret) { |
1695 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1696 | goto end; | |
1697 | } | |
1698 | ||
28ab034a | 1699 | cds_list_for_each_entry (kchan, &session->kernel_session->channel_list.head, list) { |
fb198a11 | 1700 | ret = save_kernel_channel(writer, kchan); |
55c9e7ca | 1701 | if (ret != LTTNG_OK) { |
fb198a11 JG |
1702 | goto end; |
1703 | } | |
1704 | } | |
1705 | ||
1706 | /* /channels */ | |
1707 | ret = config_writer_close_element(writer); | |
1708 | if (ret) { | |
1709 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1710 | goto end; | |
1711 | } | |
55c9e7ca JR |
1712 | |
1713 | ret = LTTNG_OK; | |
fb198a11 JG |
1714 | end: |
1715 | return ret; | |
1716 | } | |
1717 | ||
28ab034a | 1718 | static const char *get_config_domain_str(enum lttng_domain_type domain) |
51755dc8 JG |
1719 | { |
1720 | const char *str_dom; | |
1721 | ||
1722 | switch (domain) { | |
1723 | case LTTNG_DOMAIN_KERNEL: | |
1724 | str_dom = config_domain_type_kernel; | |
1725 | break; | |
1726 | case LTTNG_DOMAIN_UST: | |
1727 | str_dom = config_domain_type_ust; | |
1728 | break; | |
1729 | case LTTNG_DOMAIN_JUL: | |
1730 | str_dom = config_domain_type_jul; | |
1731 | break; | |
1732 | case LTTNG_DOMAIN_LOG4J: | |
1733 | str_dom = config_domain_type_log4j; | |
1734 | break; | |
1735 | case LTTNG_DOMAIN_PYTHON: | |
1736 | str_dom = config_domain_type_python; | |
1737 | break; | |
1738 | default: | |
a0377dfe | 1739 | abort(); |
51755dc8 JG |
1740 | } |
1741 | ||
1742 | return str_dom; | |
1743 | } | |
1744 | ||
55c9e7ca | 1745 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
159b042f | 1746 | static int save_process_attr_tracker(struct config_writer *writer, |
28ab034a JG |
1747 | struct ltt_session *sess, |
1748 | int domain, | |
1749 | enum lttng_process_attr process_attr) | |
e8fcabef | 1750 | { |
55c9e7ca | 1751 | int ret = LTTNG_OK; |
55c9e7ca | 1752 | const char *element_id_tracker, *element_target_id, *element_id; |
159b042f JG |
1753 | const struct process_attr_tracker *tracker; |
1754 | enum lttng_tracking_policy tracking_policy; | |
1755 | struct lttng_process_attr_values *values = NULL; | |
1756 | ||
1757 | switch (process_attr) { | |
1758 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1759 | element_id_tracker = config_element_process_attr_tracker_pid; | |
1760 | element_target_id = config_element_process_attr_pid_value; | |
1761 | element_id = config_element_process_attr_id; | |
1762 | break; | |
1763 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1764 | element_id_tracker = config_element_process_attr_tracker_vpid; | |
1765 | element_target_id = config_element_process_attr_vpid_value; | |
1766 | element_id = config_element_process_attr_id; | |
1767 | break; | |
1768 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1769 | element_id_tracker = config_element_process_attr_tracker_uid; | |
1770 | element_target_id = config_element_process_attr_uid_value; | |
1771 | element_id = config_element_process_attr_id; | |
1772 | break; | |
1773 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1774 | element_id_tracker = config_element_process_attr_tracker_vuid; | |
1775 | element_target_id = config_element_process_attr_vuid_value; | |
1776 | element_id = config_element_process_attr_id; | |
1777 | break; | |
1778 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1779 | element_id_tracker = config_element_process_attr_tracker_gid; | |
1780 | element_target_id = config_element_process_attr_gid_value; | |
1781 | element_id = config_element_process_attr_id; | |
1782 | break; | |
1783 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1784 | element_id_tracker = config_element_process_attr_tracker_vgid; | |
1785 | element_target_id = config_element_process_attr_vgid_value; | |
1786 | element_id = config_element_process_attr_id; | |
55c9e7ca JR |
1787 | break; |
1788 | default: | |
1789 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1790 | goto end; | |
1791 | } | |
e8fcabef JG |
1792 | |
1793 | switch (domain) { | |
1794 | case LTTNG_DOMAIN_KERNEL: | |
1795 | { | |
28ab034a | 1796 | tracker = kernel_get_process_attr_tracker(sess->kernel_session, process_attr); |
a0377dfe | 1797 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1798 | break; |
1799 | } | |
1800 | case LTTNG_DOMAIN_UST: | |
1801 | { | |
28ab034a | 1802 | tracker = trace_ust_get_process_attr_tracker(sess->ust_session, process_attr); |
a0377dfe | 1803 | LTTNG_ASSERT(tracker); |
e8fcabef JG |
1804 | break; |
1805 | } | |
1806 | case LTTNG_DOMAIN_JUL: | |
1807 | case LTTNG_DOMAIN_LOG4J: | |
1808 | case LTTNG_DOMAIN_PYTHON: | |
1809 | default: | |
159b042f | 1810 | ret = LTTNG_ERR_UNSUPPORTED_DOMAIN; |
e8fcabef JG |
1811 | goto end; |
1812 | } | |
1813 | ||
159b042f JG |
1814 | tracking_policy = process_attr_tracker_get_tracking_policy(tracker); |
1815 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_ALL) { | |
1816 | /* Tracking all, nothing to output. */ | |
1817 | ret = LTTNG_OK; | |
e283e4a0 JR |
1818 | goto end; |
1819 | } | |
a7a533cd | 1820 | |
55c9e7ca JR |
1821 | ret = config_writer_open_element(writer, element_id_tracker); |
1822 | if (ret) { | |
1823 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1824 | goto end; | |
1825 | } | |
1826 | ||
28ab034a | 1827 | ret = config_writer_open_element(writer, config_element_process_attr_values); |
55c9e7ca JR |
1828 | if (ret) { |
1829 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1830 | goto end; | |
1831 | } | |
1832 | ||
88ac6301 | 1833 | if (tracking_policy == LTTNG_TRACKING_POLICY_INCLUDE_SET) { |
159b042f JG |
1834 | unsigned int i, count; |
1835 | enum process_attr_tracker_status status = | |
28ab034a | 1836 | process_attr_tracker_get_inclusion_set(tracker, &values); |
159b042f JG |
1837 | |
1838 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1839 | ret = LTTNG_ERR_NOMEM; | |
1840 | goto end; | |
1841 | } | |
1842 | ||
1843 | count = _lttng_process_attr_values_get_count(values); | |
1844 | ||
1845 | for (i = 0; i < count; i++) { | |
1846 | unsigned int integral_value = UINT_MAX; | |
1847 | const char *name = NULL; | |
1848 | const struct process_attr_value *value = | |
28ab034a | 1849 | lttng_process_attr_tracker_values_get_at_index(values, i); |
159b042f | 1850 | |
a0377dfe | 1851 | LTTNG_ASSERT(value); |
28ab034a | 1852 | ret = config_writer_open_element(writer, element_target_id); |
159b042f | 1853 | if (ret) { |
a7a533cd JR |
1854 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1855 | goto end; | |
1856 | } | |
159b042f JG |
1857 | |
1858 | switch (value->type) { | |
1859 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_PID: | |
28ab034a | 1860 | integral_value = (unsigned int) value->value.pid; |
55c9e7ca | 1861 | break; |
159b042f | 1862 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_UID: |
28ab034a | 1863 | integral_value = (unsigned int) value->value.uid; |
159b042f JG |
1864 | break; |
1865 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GID: | |
28ab034a | 1866 | integral_value = (unsigned int) value->value.gid; |
159b042f JG |
1867 | break; |
1868 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME: | |
1869 | name = value->value.user_name; | |
a0377dfe | 1870 | LTTNG_ASSERT(name); |
159b042f JG |
1871 | break; |
1872 | case LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME: | |
1873 | name = value->value.group_name; | |
a0377dfe | 1874 | LTTNG_ASSERT(name); |
55c9e7ca JR |
1875 | break; |
1876 | default: | |
159b042f | 1877 | abort(); |
e8fcabef | 1878 | } |
159b042f JG |
1879 | |
1880 | if (name) { | |
28ab034a JG |
1881 | ret = config_writer_write_element_string( |
1882 | writer, config_element_name, name); | |
159b042f JG |
1883 | } else { |
1884 | ret = config_writer_write_element_unsigned_int( | |
28ab034a | 1885 | writer, element_id, integral_value); |
e8fcabef | 1886 | } |
159b042f JG |
1887 | |
1888 | if (ret) { | |
2d97a006 JR |
1889 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
1890 | goto end; | |
1891 | } | |
e8fcabef | 1892 | |
55c9e7ca | 1893 | /* /$element_target_id */ |
e8fcabef JG |
1894 | ret = config_writer_close_element(writer); |
1895 | if (ret) { | |
1896 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1897 | goto end; | |
1898 | } | |
1899 | } | |
55c9e7ca | 1900 | } |
e8fcabef | 1901 | |
88ac6301 | 1902 | /* /values */ |
55c9e7ca JR |
1903 | ret = config_writer_close_element(writer); |
1904 | if (ret) { | |
1905 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1906 | goto end; | |
1907 | } | |
e8fcabef | 1908 | |
55c9e7ca JR |
1909 | /* /$element_id_tracker */ |
1910 | ret = config_writer_close_element(writer); | |
1911 | if (ret) { | |
1912 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
1913 | goto end; | |
e8fcabef | 1914 | } |
55c9e7ca JR |
1915 | |
1916 | ret = LTTNG_OK; | |
e8fcabef | 1917 | end: |
159b042f | 1918 | lttng_process_attr_values_destroy(values); |
e8fcabef JG |
1919 | return ret; |
1920 | } | |
1921 | ||
55c9e7ca | 1922 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a JG |
1923 | static int |
1924 | save_process_attr_trackers(struct config_writer *writer, struct ltt_session *sess, int domain) | |
55c9e7ca JR |
1925 | { |
1926 | int ret; | |
1927 | ||
1928 | switch (domain) { | |
1929 | case LTTNG_DOMAIN_KERNEL: | |
28ab034a JG |
1930 | ret = save_process_attr_tracker( |
1931 | writer, sess, domain, LTTNG_PROCESS_ATTR_PROCESS_ID); | |
159b042f JG |
1932 | if (ret != LTTNG_OK) { |
1933 | goto end; | |
1934 | } | |
28ab034a JG |
1935 | ret = save_process_attr_tracker( |
1936 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1937 | if (ret != LTTNG_OK) { |
1938 | goto end; | |
1939 | } | |
28ab034a | 1940 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_USER_ID); |
159b042f JG |
1941 | if (ret != LTTNG_OK) { |
1942 | goto end; | |
1943 | } | |
28ab034a JG |
1944 | ret = save_process_attr_tracker( |
1945 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1946 | if (ret != LTTNG_OK) { |
1947 | goto end; | |
1948 | } | |
28ab034a | 1949 | ret = save_process_attr_tracker(writer, sess, domain, LTTNG_PROCESS_ATTR_GROUP_ID); |
159b042f JG |
1950 | if (ret != LTTNG_OK) { |
1951 | goto end; | |
1952 | } | |
28ab034a JG |
1953 | ret = save_process_attr_tracker( |
1954 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1955 | if (ret != LTTNG_OK) { |
1956 | goto end; | |
1957 | } | |
55c9e7ca JR |
1958 | break; |
1959 | case LTTNG_DOMAIN_UST: | |
28ab034a JG |
1960 | ret = save_process_attr_tracker( |
1961 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID); | |
159b042f JG |
1962 | if (ret != LTTNG_OK) { |
1963 | goto end; | |
1964 | } | |
28ab034a JG |
1965 | ret = save_process_attr_tracker( |
1966 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID); | |
159b042f JG |
1967 | if (ret != LTTNG_OK) { |
1968 | goto end; | |
1969 | } | |
28ab034a JG |
1970 | ret = save_process_attr_tracker( |
1971 | writer, sess, domain, LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID); | |
159b042f JG |
1972 | if (ret != LTTNG_OK) { |
1973 | goto end; | |
1974 | } | |
55c9e7ca JR |
1975 | break; |
1976 | default: | |
159b042f | 1977 | ret = LTTNG_ERR_INVALID; |
74675e31 | 1978 | goto end; |
55c9e7ca | 1979 | } |
159b042f JG |
1980 | ret = LTTNG_OK; |
1981 | end: | |
1982 | return ret; | |
55c9e7ca JR |
1983 | } |
1984 | ||
1985 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ | |
28ab034a JG |
1986 | static int save_ust_domain(struct config_writer *writer, |
1987 | struct ltt_session *session, | |
1988 | enum lttng_domain_type domain) | |
fb198a11 JG |
1989 | { |
1990 | int ret; | |
1991 | struct ltt_ust_channel *ust_chan; | |
1992 | const char *buffer_type_string; | |
1993 | struct lttng_ht_node_str *node; | |
1994 | struct lttng_ht_iter iter; | |
51755dc8 | 1995 | const char *config_domain_name; |
fb198a11 | 1996 | |
a0377dfe FD |
1997 | LTTNG_ASSERT(writer); |
1998 | LTTNG_ASSERT(session); | |
fb198a11 | 1999 | |
28ab034a | 2000 | ret = config_writer_open_element(writer, config_element_domain); |
51755dc8 JG |
2001 | if (ret) { |
2002 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2003 | goto end; | |
2004 | } | |
2005 | ||
2006 | config_domain_name = get_config_domain_str(domain); | |
2007 | if (!config_domain_name) { | |
2008 | ret = LTTNG_ERR_INVALID; | |
2009 | goto end; | |
2010 | } | |
2011 | ||
28ab034a | 2012 | ret = config_writer_write_element_string(writer, config_element_type, config_domain_name); |
fb198a11 JG |
2013 | if (ret) { |
2014 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2015 | goto end; | |
2016 | } | |
2017 | ||
28ab034a | 2018 | buffer_type_string = get_buffer_type_string(session->ust_session->buffer_type); |
fb198a11 JG |
2019 | if (!buffer_type_string) { |
2020 | ERR("Unsupported buffer type."); | |
2021 | ret = LTTNG_ERR_INVALID; | |
2022 | goto end; | |
2023 | } | |
2024 | ||
28ab034a JG |
2025 | ret = config_writer_write_element_string( |
2026 | writer, config_element_buffer_type, buffer_type_string); | |
fb198a11 JG |
2027 | if (ret) { |
2028 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2029 | goto end; | |
2030 | } | |
2031 | ||
2032 | ret = config_writer_open_element(writer, config_element_channels); | |
2033 | if (ret) { | |
2034 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2035 | goto end; | |
2036 | } | |
2037 | ||
2038 | rcu_read_lock(); | |
28ab034a JG |
2039 | cds_lfht_for_each_entry ( |
2040 | session->ust_session->domain_global.channels->ht, &iter.iter, node, node) { | |
0114db0e | 2041 | ust_chan = lttng::utils::container_of(node, <t_ust_channel::node); |
51755dc8 | 2042 | if (domain == ust_chan->domain) { |
fb198a11 | 2043 | ret = save_ust_channel(writer, ust_chan, session->ust_session); |
55c9e7ca | 2044 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2045 | rcu_read_unlock(); |
2046 | goto end; | |
2047 | } | |
2048 | } | |
2049 | } | |
2050 | rcu_read_unlock(); | |
2051 | ||
2052 | /* /channels */ | |
2053 | ret = config_writer_close_element(writer); | |
2054 | if (ret) { | |
2055 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2056 | goto end; | |
2057 | } | |
51755dc8 | 2058 | |
e8fcabef | 2059 | if (domain == LTTNG_DOMAIN_UST) { |
28ab034a | 2060 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2061 | if (ret) { |
2062 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2063 | goto end; | |
2064 | } | |
2065 | ||
28ab034a | 2066 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2067 | if (ret != LTTNG_OK) { |
847a5916 JR |
2068 | goto end; |
2069 | } | |
2070 | ||
e8fcabef | 2071 | /* /trackers */ |
847a5916 JR |
2072 | ret = config_writer_close_element(writer); |
2073 | if (ret) { | |
55c9e7ca | 2074 | ret = LTTNG_ERR_SAVE_IO_FAIL; |
847a5916 JR |
2075 | goto end; |
2076 | } | |
e8fcabef | 2077 | } |
847a5916 | 2078 | |
e8fcabef JG |
2079 | /* /domain */ |
2080 | ret = config_writer_close_element(writer); | |
2081 | if (ret) { | |
2082 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2083 | goto end; | |
847a5916 | 2084 | } |
e8fcabef | 2085 | |
55c9e7ca | 2086 | ret = LTTNG_OK; |
847a5916 | 2087 | end: |
847a5916 JR |
2088 | return ret; |
2089 | } | |
2090 | ||
55c9e7ca | 2091 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2092 | static int save_domains(struct config_writer *writer, struct ltt_session *session) |
fb198a11 | 2093 | { |
55c9e7ca | 2094 | int ret = LTTNG_OK; |
fb198a11 | 2095 | |
a0377dfe FD |
2096 | LTTNG_ASSERT(writer); |
2097 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2098 | |
2099 | if (!session->kernel_session && !session->ust_session) { | |
2100 | goto end; | |
2101 | } | |
2102 | ||
2103 | ret = config_writer_open_element(writer, config_element_domains); | |
2104 | if (ret) { | |
2105 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2106 | goto end; | |
2107 | } | |
2108 | ||
fb198a11 | 2109 | if (session->kernel_session) { |
28ab034a | 2110 | ret = config_writer_open_element(writer, config_element_domain); |
fb198a11 JG |
2111 | if (ret) { |
2112 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2113 | goto end; | |
2114 | } | |
2115 | ||
2116 | ret = save_kernel_session(writer, session); | |
55c9e7ca | 2117 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2118 | goto end; |
2119 | } | |
2120 | ||
28ab034a | 2121 | ret = config_writer_open_element(writer, config_element_process_attr_trackers); |
847a5916 JR |
2122 | if (ret) { |
2123 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2124 | goto end; | |
2125 | } | |
2126 | ||
28ab034a | 2127 | ret = save_process_attr_trackers(writer, session, LTTNG_DOMAIN_KERNEL); |
55c9e7ca | 2128 | if (ret != LTTNG_OK) { |
847a5916 JR |
2129 | goto end; |
2130 | } | |
2131 | ||
2132 | /* /trackers */ | |
2133 | ret = config_writer_close_element(writer); | |
2134 | if (ret) { | |
2135 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2136 | goto end; | |
2137 | } | |
fb198a11 JG |
2138 | /* /domain */ |
2139 | ret = config_writer_close_element(writer); | |
2140 | if (ret) { | |
2141 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2142 | goto end; | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | if (session->ust_session) { | |
51755dc8 | 2147 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_UST); |
55c9e7ca | 2148 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2149 | goto end; |
2150 | } | |
2151 | ||
51755dc8 | 2152 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_JUL); |
55c9e7ca | 2153 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2154 | goto end; |
2155 | } | |
fb198a11 | 2156 | |
51755dc8 | 2157 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_LOG4J); |
55c9e7ca | 2158 | if (ret != LTTNG_OK) { |
51755dc8 JG |
2159 | goto end; |
2160 | } | |
65d72c41 | 2161 | |
51755dc8 | 2162 | ret = save_ust_domain(writer, session, LTTNG_DOMAIN_PYTHON); |
55c9e7ca | 2163 | if (ret != LTTNG_OK) { |
51755dc8 | 2164 | goto end; |
fb198a11 JG |
2165 | } |
2166 | } | |
2167 | ||
2168 | /* /domains */ | |
2169 | ret = config_writer_close_element(writer); | |
2170 | if (ret) { | |
2171 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2172 | goto end; | |
2173 | } | |
55c9e7ca JR |
2174 | |
2175 | ret = LTTNG_OK; | |
fb198a11 JG |
2176 | end: |
2177 | return ret; | |
2178 | } | |
2179 | ||
55c9e7ca | 2180 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2181 | static int save_consumer_output(struct config_writer *writer, struct consumer_output *output) |
fb198a11 JG |
2182 | { |
2183 | int ret; | |
2184 | ||
a0377dfe FD |
2185 | LTTNG_ASSERT(writer); |
2186 | LTTNG_ASSERT(output); | |
fb198a11 JG |
2187 | |
2188 | ret = config_writer_open_element(writer, config_element_consumer_output); | |
2189 | if (ret) { | |
2190 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2191 | goto end; | |
2192 | } | |
2193 | ||
28ab034a | 2194 | ret = config_writer_write_element_bool(writer, config_element_enabled, output->enabled); |
fb198a11 JG |
2195 | if (ret) { |
2196 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2197 | goto end; | |
2198 | } | |
2199 | ||
2200 | ret = config_writer_open_element(writer, config_element_destination); | |
2201 | if (ret) { | |
2202 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2203 | goto end; | |
2204 | } | |
2205 | ||
2206 | switch (output->type) { | |
2207 | case CONSUMER_DST_LOCAL: | |
28ab034a JG |
2208 | ret = config_writer_write_element_string( |
2209 | writer, config_element_path, output->dst.session_root_path); | |
fb198a11 JG |
2210 | if (ret) { |
2211 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2212 | goto end; | |
2213 | } | |
2214 | break; | |
2215 | case CONSUMER_DST_NET: | |
2216 | { | |
2217 | char *uri; | |
2218 | ||
64803277 | 2219 | uri = calloc<char>(PATH_MAX); |
fb198a11 JG |
2220 | if (!uri) { |
2221 | ret = LTTNG_ERR_NOMEM; | |
2222 | goto end; | |
2223 | } | |
2224 | ||
2225 | ret = config_writer_open_element(writer, config_element_net_output); | |
2226 | if (ret) { | |
2227 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2228 | goto end_net_output; | |
2229 | } | |
2230 | ||
28ab034a | 2231 | if (output->dst.net.control_isset && output->dst.net.data_isset) { |
fb198a11 JG |
2232 | ret = uri_to_str_url(&output->dst.net.control, uri, PATH_MAX); |
2233 | if (ret < 0) { | |
2234 | ret = LTTNG_ERR_INVALID; | |
2235 | goto end_net_output; | |
2236 | } | |
2237 | ||
28ab034a JG |
2238 | ret = config_writer_write_element_string( |
2239 | writer, config_element_control_uri, uri); | |
fb198a11 JG |
2240 | if (ret) { |
2241 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2242 | goto end_net_output; | |
2243 | } | |
2244 | ||
2245 | ret = uri_to_str_url(&output->dst.net.data, uri, PATH_MAX); | |
2246 | if (ret < 0) { | |
2247 | ret = LTTNG_ERR_INVALID; | |
2248 | goto end_net_output; | |
2249 | } | |
2250 | ||
28ab034a JG |
2251 | ret = config_writer_write_element_string( |
2252 | writer, config_element_data_uri, uri); | |
fb198a11 JG |
2253 | if (ret) { |
2254 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2255 | goto end_net_output; | |
2256 | } | |
55c9e7ca | 2257 | ret = LTTNG_OK; |
28ab034a | 2258 | end_net_output: |
fb198a11 | 2259 | free(uri); |
55c9e7ca | 2260 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2261 | goto end; |
2262 | } | |
2263 | } else { | |
28ab034a JG |
2264 | ret = !output->dst.net.control_isset ? LTTNG_ERR_URL_CTRL_MISS : |
2265 | LTTNG_ERR_URL_DATA_MISS; | |
c39270e5 | 2266 | free(uri); |
fb198a11 JG |
2267 | goto end; |
2268 | } | |
2269 | ||
2270 | ret = config_writer_close_element(writer); | |
2271 | if (ret) { | |
2272 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2273 | goto end; | |
2274 | } | |
2275 | break; | |
2276 | } | |
2277 | default: | |
2278 | ERR("Unsupported consumer output type."); | |
2279 | ret = LTTNG_ERR_INVALID; | |
2280 | goto end; | |
2281 | } | |
2282 | ||
2283 | /* /destination */ | |
2284 | ret = config_writer_close_element(writer); | |
2285 | if (ret) { | |
2286 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2287 | goto end; | |
2288 | } | |
2289 | ||
2290 | /* /consumer_output */ | |
2291 | ret = config_writer_close_element(writer); | |
2292 | if (ret) { | |
2293 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2294 | goto end; | |
2295 | } | |
55c9e7ca JR |
2296 | |
2297 | ret = LTTNG_OK; | |
fb198a11 JG |
2298 | end: |
2299 | return ret; | |
2300 | } | |
2301 | ||
55c9e7ca | 2302 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2303 | static int save_snapshot_outputs(struct config_writer *writer, struct snapshot *snapshot) |
fb198a11 JG |
2304 | { |
2305 | int ret; | |
2306 | struct lttng_ht_iter iter; | |
2307 | struct snapshot_output *output; | |
2308 | ||
a0377dfe FD |
2309 | LTTNG_ASSERT(writer); |
2310 | LTTNG_ASSERT(snapshot); | |
fb198a11 JG |
2311 | |
2312 | ret = config_writer_open_element(writer, config_element_snapshot_outputs); | |
2313 | if (ret) { | |
2314 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2315 | goto end; | |
2316 | } | |
2317 | ||
2318 | rcu_read_lock(); | |
28ab034a JG |
2319 | cds_lfht_for_each_entry (snapshot->output_ht->ht, &iter.iter, output, node.node) { |
2320 | ret = config_writer_open_element(writer, config_element_output); | |
fb198a11 JG |
2321 | if (ret) { |
2322 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2323 | goto end_unlock; | |
2324 | } | |
2325 | ||
28ab034a | 2326 | ret = config_writer_write_element_string(writer, config_element_name, output->name); |
fb198a11 JG |
2327 | if (ret) { |
2328 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2329 | goto end_unlock; | |
2330 | } | |
2331 | ||
28ab034a JG |
2332 | ret = config_writer_write_element_unsigned_int( |
2333 | writer, config_element_max_size, output->max_size); | |
fb198a11 JG |
2334 | if (ret) { |
2335 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2336 | goto end_unlock; | |
2337 | } | |
2338 | ||
2339 | ret = save_consumer_output(writer, output->consumer); | |
55c9e7ca | 2340 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2341 | goto end_unlock; |
2342 | } | |
2343 | ||
2344 | /* /output */ | |
2345 | ret = config_writer_close_element(writer); | |
2346 | if (ret) { | |
2347 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2348 | goto end_unlock; | |
2349 | } | |
2350 | } | |
2351 | rcu_read_unlock(); | |
2352 | ||
2353 | /* /snapshot_outputs */ | |
2354 | ret = config_writer_close_element(writer); | |
2355 | if (ret) { | |
2356 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2357 | goto end; | |
2358 | } | |
2359 | ||
55c9e7ca | 2360 | ret = LTTNG_OK; |
fb198a11 JG |
2361 | end: |
2362 | return ret; | |
2363 | end_unlock: | |
2364 | rcu_read_unlock(); | |
2365 | return ret; | |
2366 | } | |
2367 | ||
55c9e7ca | 2368 | /* Return LTTNG_OK on success else a LTTNG_ERR* code. */ |
28ab034a | 2369 | static int save_session_output(struct config_writer *writer, struct ltt_session *session) |
fb198a11 JG |
2370 | { |
2371 | int ret; | |
2372 | ||
a0377dfe FD |
2373 | LTTNG_ASSERT(writer); |
2374 | LTTNG_ASSERT(session); | |
fb198a11 JG |
2375 | |
2376 | if ((session->snapshot_mode && session->snapshot.nb_output == 0) || | |
28ab034a | 2377 | (!session->snapshot_mode && !session->consumer)) { |
fb198a11 | 2378 | /* Session is in no output mode */ |
55c9e7ca | 2379 | ret = LTTNG_OK; |
fb198a11 JG |
2380 | goto end; |
2381 | } | |
2382 | ||
2383 | ret = config_writer_open_element(writer, config_element_output); | |
2384 | if (ret) { | |
2385 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2386 | goto end; | |
2387 | } | |
2388 | ||
2389 | if (session->snapshot_mode) { | |
2390 | ret = save_snapshot_outputs(writer, &session->snapshot); | |
55c9e7ca | 2391 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2392 | goto end; |
2393 | } | |
2394 | } else { | |
2395 | if (session->consumer) { | |
2396 | ret = save_consumer_output(writer, session->consumer); | |
55c9e7ca | 2397 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2398 | goto end; |
2399 | } | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | /* /output */ | |
2404 | ret = config_writer_close_element(writer); | |
2405 | if (ret) { | |
2406 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2407 | goto end; | |
2408 | } | |
55c9e7ca | 2409 | ret = LTTNG_OK; |
fb198a11 JG |
2410 | end: |
2411 | return ret; | |
2412 | } | |
2413 | ||
28ab034a JG |
2414 | static int save_session_rotation_schedule(struct config_writer *writer, |
2415 | enum lttng_rotation_schedule_type type, | |
2416 | uint64_t value) | |
ce6176f2 JG |
2417 | { |
2418 | int ret = 0; | |
2419 | const char *element_name; | |
2420 | const char *value_name; | |
2421 | ||
2422 | switch (type) { | |
2423 | case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC: | |
2424 | element_name = config_element_rotation_schedule_periodic; | |
28ab034a | 2425 | value_name = config_element_rotation_schedule_periodic_time_us; |
ce6176f2 JG |
2426 | break; |
2427 | case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD: | |
2428 | element_name = config_element_rotation_schedule_size_threshold; | |
28ab034a | 2429 | value_name = config_element_rotation_schedule_size_threshold_bytes; |
ce6176f2 JG |
2430 | break; |
2431 | default: | |
2432 | ret = -1; | |
2433 | goto end; | |
2434 | } | |
2435 | ||
2436 | ret = config_writer_open_element(writer, element_name); | |
2437 | if (ret) { | |
2438 | goto end; | |
2439 | } | |
2440 | ||
28ab034a | 2441 | ret = config_writer_write_element_unsigned_int(writer, value_name, value); |
ce6176f2 JG |
2442 | if (ret) { |
2443 | goto end; | |
2444 | } | |
2445 | ||
2446 | /* Close schedule descriptor element. */ | |
2447 | ret = config_writer_close_element(writer); | |
2448 | if (ret) { | |
2449 | goto end; | |
2450 | } | |
2451 | end: | |
2452 | return ret; | |
2453 | } | |
2454 | ||
28ab034a JG |
2455 | static int save_session_rotation_schedules(struct config_writer *writer, |
2456 | struct ltt_session *session) | |
ce6176f2 JG |
2457 | { |
2458 | int ret; | |
2459 | ||
28ab034a | 2460 | ret = config_writer_open_element(writer, config_element_rotation_schedules); |
f829d17a JG |
2461 | if (ret) { |
2462 | goto end; | |
2463 | } | |
ce6176f2 JG |
2464 | if (session->rotate_timer_period) { |
2465 | ret = save_session_rotation_schedule(writer, | |
28ab034a JG |
2466 | LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC, |
2467 | session->rotate_timer_period); | |
ce6176f2 JG |
2468 | if (ret) { |
2469 | goto close_schedules; | |
2470 | } | |
2471 | } | |
2472 | if (session->rotate_size) { | |
28ab034a JG |
2473 | ret = save_session_rotation_schedule( |
2474 | writer, LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD, session->rotate_size); | |
ce6176f2 JG |
2475 | if (ret) { |
2476 | goto close_schedules; | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | close_schedules: | |
2481 | /* Close rotation schedules element. */ | |
2482 | ret = config_writer_close_element(writer); | |
2483 | if (ret) { | |
2484 | goto end; | |
2485 | } | |
2486 | end: | |
2487 | return ret; | |
2488 | } | |
2489 | ||
fb198a11 JG |
2490 | /* |
2491 | * Save the given session. | |
2492 | * | |
55c9e7ca | 2493 | * Return LTTNG_OK on success else a LTTNG_ERR* code. |
fb198a11 | 2494 | */ |
28ab034a JG |
2495 | static int save_session(struct ltt_session *session, |
2496 | struct lttng_save_session_attr *attr, | |
2497 | lttng_sock_cred *creds) | |
fb198a11 | 2498 | { |
b45f9ad2 | 2499 | int ret, fd = -1; |
511653c3 | 2500 | char config_file_path[LTTNG_PATH_MAX]; |
fb198a11 JG |
2501 | size_t len; |
2502 | struct config_writer *writer = NULL; | |
2503 | size_t session_name_len; | |
2504 | const char *provided_path; | |
f376ad9c | 2505 | int file_open_flags = O_CREAT | O_WRONLY | O_TRUNC; |
fb198a11 | 2506 | |
a0377dfe FD |
2507 | LTTNG_ASSERT(session); |
2508 | LTTNG_ASSERT(attr); | |
2509 | LTTNG_ASSERT(creds); | |
fb198a11 JG |
2510 | |
2511 | session_name_len = strlen(session->name); | |
95a29ab8 | 2512 | memset(config_file_path, 0, sizeof(config_file_path)); |
fb198a11 | 2513 | |
28ab034a | 2514 | if (!session_access_ok(session, LTTNG_SOCK_GET_UID_CRED(creds)) || session->destroyed) { |
fb198a11 JG |
2515 | ret = LTTNG_ERR_EPERM; |
2516 | goto end; | |
2517 | } | |
2518 | ||
2519 | provided_path = lttng_save_session_attr_get_output_url(attr); | |
2520 | if (provided_path) { | |
95a29ab8 | 2521 | DBG3("Save session in provided path %s", provided_path); |
fb198a11 | 2522 | len = strlen(provided_path); |
d2992717 | 2523 | if (len >= sizeof(config_file_path)) { |
fb198a11 JG |
2524 | ret = LTTNG_ERR_SET_URL; |
2525 | goto end; | |
2526 | } | |
511653c3 | 2527 | strncpy(config_file_path, provided_path, sizeof(config_file_path)); |
fb198a11 | 2528 | } else { |
7e078ad1 | 2529 | ssize_t ret_len; |
28ab034a | 2530 | char *home_dir = utils_get_user_home_dir(LTTNG_SOCK_GET_UID_CRED(creds)); |
fb198a11 JG |
2531 | if (!home_dir) { |
2532 | ret = LTTNG_ERR_SET_URL; | |
2533 | goto end; | |
2534 | } | |
2535 | ||
28ab034a JG |
2536 | ret_len = snprintf(config_file_path, |
2537 | sizeof(config_file_path), | |
2538 | DEFAULT_SESSION_HOME_CONFIGPATH, | |
2539 | home_dir); | |
fb198a11 | 2540 | free(home_dir); |
7e078ad1 | 2541 | if (ret_len < 0) { |
fb198a11 JG |
2542 | PERROR("snprintf save session"); |
2543 | ret = LTTNG_ERR_SET_URL; | |
2544 | goto end; | |
2545 | } | |
7e078ad1 | 2546 | len = ret_len; |
fb198a11 JG |
2547 | } |
2548 | ||
2549 | /* | |
d2992717 DG |
2550 | * Check the path fits in the config file path dst including the '/' |
2551 | * followed by trailing .lttng extension and the NULL terminated string. | |
fb198a11 | 2552 | */ |
28ab034a JG |
2553 | if ((len + session_name_len + 2 + sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION)) > |
2554 | sizeof(config_file_path)) { | |
fb198a11 JG |
2555 | ret = LTTNG_ERR_SET_URL; |
2556 | goto end; | |
2557 | } | |
2558 | ||
28ab034a JG |
2559 | ret = run_as_mkdir_recursive(config_file_path, |
2560 | S_IRWXU | S_IRWXG, | |
2561 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2562 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2563 | if (ret) { |
2564 | ret = LTTNG_ERR_SET_URL; | |
2565 | goto end; | |
2566 | } | |
2567 | ||
d2992717 DG |
2568 | /* |
2569 | * At this point, we know that everything fits in the buffer. Validation | |
2570 | * was done just above. | |
2571 | */ | |
fb198a11 | 2572 | config_file_path[len++] = '/'; |
511653c3 | 2573 | strncpy(config_file_path + len, session->name, sizeof(config_file_path) - len); |
fb198a11 JG |
2574 | len += session_name_len; |
2575 | strcpy(config_file_path + len, DEFAULT_SESSION_CONFIG_FILE_EXTENSION); | |
95a29ab8 DG |
2576 | len += sizeof(DEFAULT_SESSION_CONFIG_FILE_EXTENSION); |
2577 | config_file_path[len] = '\0'; | |
fb198a11 | 2578 | |
f376ad9c JG |
2579 | if (!attr->overwrite) { |
2580 | file_open_flags |= O_EXCL; | |
fb198a11 JG |
2581 | } |
2582 | ||
28ab034a JG |
2583 | fd = run_as_open(config_file_path, |
2584 | file_open_flags, | |
2585 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, | |
2586 | LTTNG_SOCK_GET_UID_CRED(creds), | |
2587 | LTTNG_SOCK_GET_GID_CRED(creds)); | |
fb198a11 JG |
2588 | if (fd < 0) { |
2589 | PERROR("Could not create configuration file"); | |
f376ad9c JG |
2590 | switch (errno) { |
2591 | case EEXIST: | |
2592 | ret = LTTNG_ERR_SAVE_FILE_EXIST; | |
2593 | break; | |
2594 | case EACCES: | |
2595 | ret = LTTNG_ERR_EPERM; | |
2596 | break; | |
2597 | default: | |
2598 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2599 | break; | |
2600 | } | |
fb198a11 JG |
2601 | goto end; |
2602 | } | |
2603 | ||
705bb62f | 2604 | writer = config_writer_create(fd, 1); |
fb198a11 JG |
2605 | if (!writer) { |
2606 | ret = LTTNG_ERR_NOMEM; | |
2607 | goto end; | |
2608 | } | |
2609 | ||
2610 | ret = config_writer_open_element(writer, config_element_sessions); | |
2611 | if (ret) { | |
2612 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2613 | goto end; | |
2614 | } | |
2615 | ||
2616 | ret = config_writer_open_element(writer, config_element_session); | |
2617 | if (ret) { | |
2618 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2619 | goto end; | |
2620 | } | |
2621 | ||
28ab034a | 2622 | ret = config_writer_write_element_string(writer, config_element_name, session->name); |
fb198a11 JG |
2623 | if (ret) { |
2624 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2625 | goto end; | |
2626 | } | |
2627 | ||
55c9e7ca | 2628 | if (session->shm_path[0] != '\0') { |
28ab034a JG |
2629 | ret = config_writer_write_element_string( |
2630 | writer, config_element_shared_memory_path, session->shm_path); | |
9e7c9f56 JR |
2631 | if (ret) { |
2632 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2633 | goto end; | |
2634 | } | |
2635 | } | |
2636 | ||
fb198a11 | 2637 | ret = save_domains(writer, session); |
55c9e7ca | 2638 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2639 | goto end; |
2640 | } | |
2641 | ||
28ab034a | 2642 | ret = config_writer_write_element_bool(writer, config_element_started, session->active); |
fb198a11 JG |
2643 | if (ret) { |
2644 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2645 | goto end; | |
2646 | } | |
2647 | ||
28ab034a JG |
2648 | if (session->snapshot_mode || session->live_timer || session->rotate_timer_period || |
2649 | session->rotate_size) { | |
fb198a11 JG |
2650 | ret = config_writer_open_element(writer, config_element_attributes); |
2651 | if (ret) { | |
2652 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2653 | goto end; | |
2654 | } | |
2655 | ||
2656 | if (session->snapshot_mode) { | |
28ab034a JG |
2657 | ret = config_writer_write_element_bool( |
2658 | writer, config_element_snapshot_mode, 1); | |
fb198a11 JG |
2659 | if (ret) { |
2660 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2661 | goto end; | |
2662 | } | |
329f3443 | 2663 | } else if (session->live_timer) { |
28ab034a JG |
2664 | ret = config_writer_write_element_unsigned_int( |
2665 | writer, config_element_live_timer_interval, session->live_timer); | |
fb198a11 JG |
2666 | if (ret) { |
2667 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2668 | goto end; | |
2669 | } | |
2670 | } | |
ce6176f2 | 2671 | if (session->rotate_timer_period || session->rotate_size) { |
28ab034a | 2672 | ret = save_session_rotation_schedules(writer, session); |
329f3443 JD |
2673 | if (ret) { |
2674 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2675 | goto end; | |
2676 | } | |
2677 | } | |
fb198a11 JG |
2678 | |
2679 | /* /attributes */ | |
2680 | ret = config_writer_close_element(writer); | |
2681 | if (ret) { | |
2682 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2683 | goto end; | |
2684 | } | |
2685 | } | |
2686 | ||
2687 | ret = save_session_output(writer, session); | |
55c9e7ca | 2688 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2689 | goto end; |
2690 | } | |
2691 | ||
2692 | /* /session */ | |
2693 | ret = config_writer_close_element(writer); | |
2694 | if (ret) { | |
2695 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2696 | goto end; | |
2697 | } | |
2698 | ||
2699 | /* /sessions */ | |
2700 | ret = config_writer_close_element(writer); | |
2701 | if (ret) { | |
2702 | ret = LTTNG_ERR_SAVE_IO_FAIL; | |
2703 | goto end; | |
2704 | } | |
55c9e7ca JR |
2705 | |
2706 | ret = LTTNG_OK; | |
fb198a11 JG |
2707 | end: |
2708 | if (writer && config_writer_destroy(writer)) { | |
2709 | /* Preserve the original error code */ | |
55c9e7ca | 2710 | ret = ret != LTTNG_OK ? ret : LTTNG_ERR_SAVE_IO_FAIL; |
fb198a11 | 2711 | } |
55c9e7ca | 2712 | if (ret != LTTNG_OK) { |
fb198a11 | 2713 | /* Delete file in case of error */ |
b45f9ad2 | 2714 | if ((fd >= 0) && unlink(config_file_path)) { |
fb198a11 JG |
2715 | PERROR("Unlinking XML session configuration."); |
2716 | } | |
2717 | } | |
2718 | ||
b45f9ad2 | 2719 | if (fd >= 0) { |
55c9e7ca JR |
2720 | int closeret; |
2721 | ||
2722 | closeret = close(fd); | |
2723 | if (closeret) { | |
1d12100d JR |
2724 | PERROR("Closing XML session configuration"); |
2725 | } | |
2726 | } | |
2727 | ||
fb198a11 JG |
2728 | return ret; |
2729 | } | |
2730 | ||
28ab034a | 2731 | int cmd_save_sessions(struct lttng_save_session_attr *attr, lttng_sock_cred *creds) |
fb198a11 JG |
2732 | { |
2733 | int ret; | |
2734 | const char *session_name; | |
2735 | struct ltt_session *session; | |
2736 | ||
2737 | session_lock_list(); | |
2738 | ||
2739 | session_name = lttng_save_session_attr_get_session_name(attr); | |
2740 | if (session_name) { | |
2741 | session = session_find_by_name(session_name); | |
2742 | if (!session) { | |
2743 | ret = LTTNG_ERR_SESS_NOT_FOUND; | |
2744 | goto end; | |
2745 | } | |
2746 | ||
2747 | session_lock(session); | |
2748 | ret = save_session(session, attr, creds); | |
2749 | session_unlock(session); | |
e32d7f27 | 2750 | session_put(session); |
55c9e7ca | 2751 | if (ret != LTTNG_OK) { |
fb198a11 JG |
2752 | goto end; |
2753 | } | |
2754 | } else { | |
2755 | struct ltt_session_list *list = session_get_list(); | |
2756 | ||
28ab034a | 2757 | cds_list_for_each_entry (session, &list->head, list) { |
e32d7f27 JG |
2758 | if (!session_get(session)) { |
2759 | continue; | |
2760 | } | |
fb198a11 JG |
2761 | session_lock(session); |
2762 | ret = save_session(session, attr, creds); | |
2763 | session_unlock(session); | |
e32d7f27 | 2764 | session_put(session); |
fb198a11 | 2765 | /* Don't abort if we don't have the required permissions. */ |
55c9e7ca | 2766 | if (ret != LTTNG_OK && ret != LTTNG_ERR_EPERM) { |
fb198a11 JG |
2767 | goto end; |
2768 | } | |
2769 | } | |
2770 | } | |
2771 | ret = LTTNG_OK; | |
2772 | ||
2773 | end: | |
2774 | session_unlock_list(); | |
2775 | return ret; | |
2776 | } |