Commit | Line | Data |
---|---|---|
b579acd9 | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
ab5be9fa | 3 | * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
b579acd9 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
b579acd9 | 6 | * |
b579acd9 DG |
7 | */ |
8 | ||
6c1c0768 | 9 | #define _LGPL_SOURCE |
28ab034a JG |
10 | #include "agent.hpp" |
11 | #include "context.hpp" | |
12 | #include "kernel.hpp" | |
13 | #include "trace-ust.hpp" | |
14 | #include "ust-app.hpp" | |
15 | ||
16 | #include <common/error.hpp> | |
17 | #include <common/sessiond-comm/sessiond-comm.hpp> | |
18 | ||
b579acd9 | 19 | #include <stdio.h> |
b579acd9 | 20 | #include <unistd.h> |
54d01ffb | 21 | #include <urcu/list.h> |
1e307fab | 22 | |
b579acd9 DG |
23 | /* |
24 | * Add kernel context to all channel. | |
df3c77c8 JG |
25 | * |
26 | * Assumes the ownership of kctx. | |
b579acd9 DG |
27 | */ |
28 | static int add_kctx_all_channels(struct ltt_kernel_session *ksession, | |
28ab034a | 29 | struct ltt_kernel_context *kctx) |
b579acd9 | 30 | { |
601d5acf | 31 | int ret; |
b579acd9 DG |
32 | struct ltt_kernel_channel *kchan; |
33 | ||
a0377dfe FD |
34 | LTTNG_ASSERT(ksession); |
35 | LTTNG_ASSERT(kctx); | |
0525e9ae | 36 | |
601d5acf | 37 | DBG("Adding kernel context to all channels"); |
b579acd9 DG |
38 | |
39 | /* Go over all channels */ | |
28ab034a | 40 | cds_list_for_each_entry (kchan, &ksession->channel_list.head, list) { |
df3c77c8 JG |
41 | struct ltt_kernel_context *kctx_copy; |
42 | ||
43 | kctx_copy = trace_kernel_copy_context(kctx); | |
44 | if (!kctx_copy) { | |
45 | PERROR("zmalloc ltt_kernel_context"); | |
7682f304 | 46 | ret = -LTTNG_ERR_NOMEM; |
df3c77c8 JG |
47 | goto error; |
48 | } | |
49 | ||
50 | /* Ownership of kctx_copy is transferred to the callee. */ | |
51 | ret = kernel_add_channel_context(kchan, kctx_copy); | |
cd9adb8b | 52 | kctx_copy = nullptr; |
1ae5e83e | 53 | if (ret != 0) { |
601d5acf | 54 | goto error; |
b579acd9 DG |
55 | } |
56 | } | |
57 | ||
f73fabfd | 58 | ret = LTTNG_OK; |
b579acd9 DG |
59 | |
60 | error: | |
df3c77c8 | 61 | trace_kernel_destroy_context(kctx); |
b579acd9 DG |
62 | return ret; |
63 | } | |
64 | ||
65 | /* | |
66 | * Add kernel context to a specific channel. | |
df3c77c8 JG |
67 | * |
68 | * Assumes the ownership of kctx. | |
b579acd9 | 69 | */ |
28ab034a | 70 | static int add_kctx_to_channel(struct ltt_kernel_context *kctx, struct ltt_kernel_channel *kchan) |
b579acd9 | 71 | { |
601d5acf | 72 | int ret; |
b579acd9 | 73 | |
a0377dfe FD |
74 | LTTNG_ASSERT(kchan); |
75 | LTTNG_ASSERT(kctx); | |
0525e9ae | 76 | |
601d5acf | 77 | DBG("Add kernel context to channel '%s'", kchan->channel->name); |
b579acd9 | 78 | |
df3c77c8 | 79 | /* Ownership of kctx is transferred to the callee. */ |
601d5acf | 80 | ret = kernel_add_channel_context(kchan, kctx); |
cd9adb8b | 81 | kctx = nullptr; |
1ae5e83e | 82 | if (ret != 0) { |
b579acd9 DG |
83 | goto error; |
84 | } | |
85 | ||
f73fabfd | 86 | ret = LTTNG_OK; |
b579acd9 DG |
87 | |
88 | error: | |
89 | return ret; | |
90 | } | |
91 | ||
6b79ed20 DG |
92 | /* |
93 | * Add UST context to channel. | |
94 | */ | |
4ce7709b | 95 | static int add_uctx_to_channel(struct ltt_ust_session *usess, |
28ab034a JG |
96 | enum lttng_domain_type domain, |
97 | struct ltt_ust_channel *uchan, | |
98 | const struct lttng_event_context *ctx) | |
6b79ed20 DG |
99 | { |
100 | int ret; | |
cd9adb8b | 101 | struct ltt_ust_context *uctx = nullptr; |
6b79ed20 | 102 | |
a0377dfe FD |
103 | LTTNG_ASSERT(usess); |
104 | LTTNG_ASSERT(uchan); | |
105 | LTTNG_ASSERT(ctx); | |
0525e9ae | 106 | |
aa3514e9 | 107 | /* Check if context is duplicate */ |
28ab034a | 108 | cds_list_for_each_entry (uctx, &uchan->ctx_list, list) { |
aa3514e9 | 109 | if (trace_ust_match_context(uctx, ctx)) { |
7682f304 | 110 | ret = LTTNG_ERR_UST_CONTEXT_EXIST; |
aa3514e9 MD |
111 | goto duplicate; |
112 | } | |
113 | } | |
cd9adb8b | 114 | uctx = nullptr; |
bdf64013 JG |
115 | |
116 | switch (domain) { | |
117 | case LTTNG_DOMAIN_JUL: | |
118 | case LTTNG_DOMAIN_LOG4J: | |
119 | { | |
442f8c07 JG |
120 | struct agent *agt; |
121 | ||
122 | if (ctx->ctx != LTTNG_EVENT_CONTEXT_APP_CONTEXT) { | |
123 | /* Other contexts are not needed by the agent. */ | |
124 | break; | |
125 | } | |
126 | agt = trace_ust_find_agent(usess, domain); | |
bdf64013 JG |
127 | |
128 | if (!agt) { | |
129 | agt = agent_create(domain); | |
130 | if (!agt) { | |
7682f304 | 131 | ret = -LTTNG_ERR_NOMEM; |
bdf64013 JG |
132 | goto error; |
133 | } | |
134 | agent_add(agt, usess->agents); | |
135 | } | |
136 | ret = agent_add_context(ctx, agt); | |
137 | if (ret != LTTNG_OK) { | |
138 | goto error; | |
139 | } | |
140 | ||
141 | ret = agent_enable_context(ctx, domain); | |
142 | if (ret != LTTNG_OK) { | |
143 | goto error; | |
144 | } | |
145 | break; | |
146 | } | |
147 | case LTTNG_DOMAIN_UST: | |
148 | break; | |
149 | default: | |
a0377dfe | 150 | abort(); |
bdf64013 | 151 | } |
aa3514e9 | 152 | |
6b79ed20 DG |
153 | /* Create ltt UST context */ |
154 | uctx = trace_ust_create_context(ctx); | |
cd9adb8b | 155 | if (uctx == nullptr) { |
7682f304 | 156 | ret = LTTNG_ERR_UST_CONTEXT_INVAL; |
6b79ed20 DG |
157 | goto error; |
158 | } | |
159 | ||
6b79ed20 | 160 | /* Add ltt UST context node to ltt UST channel */ |
aa3514e9 | 161 | lttng_ht_add_ulong(uchan->ctx, &uctx->node); |
31746f93 | 162 | cds_list_add_tail(&uctx->list, &uchan->ctx_list); |
6b79ed20 | 163 | |
88e3c2f5 JG |
164 | if (!usess->active) { |
165 | goto end; | |
166 | } | |
167 | ||
168 | ret = ust_app_add_ctx_channel_glb(usess, uchan, uctx); | |
169 | if (ret < 0) { | |
170 | goto error; | |
171 | } | |
172 | end: | |
727d5404 DG |
173 | DBG("Context UST %d added to channel %s", uctx->ctx.ctx, uchan->name); |
174 | ||
175 | return 0; | |
6b79ed20 DG |
176 | |
177 | error: | |
178 | free(uctx); | |
aa3514e9 | 179 | duplicate: |
6b79ed20 DG |
180 | return ret; |
181 | } | |
182 | ||
b579acd9 DG |
183 | /* |
184 | * Add kernel context to tracer. | |
185 | */ | |
54d01ffb | 186 | int context_kernel_add(struct ltt_kernel_session *ksession, |
28ab034a JG |
187 | const struct lttng_event_context *ctx, |
188 | const char *channel_name) | |
b579acd9 DG |
189 | { |
190 | int ret; | |
191 | struct ltt_kernel_channel *kchan; | |
645328ae | 192 | struct ltt_kernel_context *kctx; |
54d01ffb | 193 | |
a0377dfe FD |
194 | LTTNG_ASSERT(ksession); |
195 | LTTNG_ASSERT(ctx); | |
196 | LTTNG_ASSERT(channel_name); | |
0525e9ae | 197 | |
cd9adb8b | 198 | kctx = trace_kernel_create_context(nullptr); |
645328ae | 199 | if (!kctx) { |
7682f304 | 200 | ret = -LTTNG_ERR_NOMEM; |
645328ae DG |
201 | goto error; |
202 | } | |
203 | ||
54d01ffb | 204 | /* Setup kernel context structure */ |
9197c5c4 MD |
205 | switch (ctx->ctx) { |
206 | case LTTNG_EVENT_CONTEXT_PID: | |
b8e2fb80 | 207 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PID; |
9197c5c4 | 208 | break; |
9197c5c4 | 209 | case LTTNG_EVENT_CONTEXT_PROCNAME: |
b8e2fb80 | 210 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PROCNAME; |
9197c5c4 MD |
211 | break; |
212 | case LTTNG_EVENT_CONTEXT_PRIO: | |
b8e2fb80 | 213 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PRIO; |
9197c5c4 MD |
214 | break; |
215 | case LTTNG_EVENT_CONTEXT_NICE: | |
b8e2fb80 | 216 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_NICE; |
9197c5c4 MD |
217 | break; |
218 | case LTTNG_EVENT_CONTEXT_VPID: | |
b8e2fb80 | 219 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VPID; |
9197c5c4 MD |
220 | break; |
221 | case LTTNG_EVENT_CONTEXT_TID: | |
b8e2fb80 | 222 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_TID; |
9197c5c4 MD |
223 | break; |
224 | case LTTNG_EVENT_CONTEXT_VTID: | |
b8e2fb80 | 225 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VTID; |
9197c5c4 MD |
226 | break; |
227 | case LTTNG_EVENT_CONTEXT_PPID: | |
b8e2fb80 | 228 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PPID; |
9197c5c4 MD |
229 | break; |
230 | case LTTNG_EVENT_CONTEXT_VPPID: | |
b8e2fb80 | 231 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VPPID; |
9197c5c4 | 232 | break; |
54773d68 | 233 | case LTTNG_EVENT_CONTEXT_HOSTNAME: |
b8e2fb80 | 234 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_HOSTNAME; |
54773d68 | 235 | break; |
aa3514e9 MD |
236 | case LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER: |
237 | case LTTNG_EVENT_CONTEXT_PERF_COUNTER: | |
b8e2fb80 | 238 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER; |
aa3514e9 | 239 | break; |
1ae5e83e | 240 | case LTTNG_EVENT_CONTEXT_INTERRUPTIBLE: |
b8e2fb80 | 241 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_INTERRUPTIBLE; |
1ae5e83e JD |
242 | break; |
243 | case LTTNG_EVENT_CONTEXT_PREEMPTIBLE: | |
b8e2fb80 | 244 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PREEMPTIBLE; |
1ae5e83e JD |
245 | break; |
246 | case LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE: | |
b8e2fb80 | 247 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_NEED_RESCHEDULE; |
1ae5e83e JD |
248 | break; |
249 | case LTTNG_EVENT_CONTEXT_MIGRATABLE: | |
b8e2fb80 | 250 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_MIGRATABLE; |
1ae5e83e | 251 | break; |
373148e9 | 252 | case LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL: |
b8e2fb80 | 253 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_KERNEL; |
373148e9 FG |
254 | break; |
255 | case LTTNG_EVENT_CONTEXT_CALLSTACK_USER: | |
b8e2fb80 | 256 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_CALLSTACK_USER; |
373148e9 | 257 | break; |
40e14884 | 258 | case LTTNG_EVENT_CONTEXT_CGROUP_NS: |
b8e2fb80 | 259 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_CGROUP_NS; |
40e14884 MJ |
260 | break; |
261 | case LTTNG_EVENT_CONTEXT_IPC_NS: | |
b8e2fb80 | 262 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_IPC_NS; |
40e14884 MJ |
263 | break; |
264 | case LTTNG_EVENT_CONTEXT_MNT_NS: | |
b8e2fb80 | 265 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_MNT_NS; |
40e14884 MJ |
266 | break; |
267 | case LTTNG_EVENT_CONTEXT_NET_NS: | |
b8e2fb80 | 268 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_NET_NS; |
40e14884 MJ |
269 | break; |
270 | case LTTNG_EVENT_CONTEXT_PID_NS: | |
b8e2fb80 | 271 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_PID_NS; |
40e14884 | 272 | break; |
d37ac3cd | 273 | case LTTNG_EVENT_CONTEXT_TIME_NS: |
b8e2fb80 | 274 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_TIME_NS; |
d37ac3cd | 275 | break; |
40e14884 | 276 | case LTTNG_EVENT_CONTEXT_USER_NS: |
b8e2fb80 | 277 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_USER_NS; |
40e14884 MJ |
278 | break; |
279 | case LTTNG_EVENT_CONTEXT_UTS_NS: | |
b8e2fb80 | 280 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_UTS_NS; |
40e14884 | 281 | break; |
499cbfa1 | 282 | case LTTNG_EVENT_CONTEXT_UID: |
b8e2fb80 | 283 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_UID; |
499cbfa1 MJ |
284 | break; |
285 | case LTTNG_EVENT_CONTEXT_EUID: | |
b8e2fb80 | 286 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_EUID; |
499cbfa1 MJ |
287 | break; |
288 | case LTTNG_EVENT_CONTEXT_SUID: | |
b8e2fb80 | 289 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_SUID; |
499cbfa1 MJ |
290 | break; |
291 | case LTTNG_EVENT_CONTEXT_GID: | |
b8e2fb80 | 292 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_GID; |
499cbfa1 MJ |
293 | break; |
294 | case LTTNG_EVENT_CONTEXT_EGID: | |
b8e2fb80 | 295 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_EGID; |
499cbfa1 MJ |
296 | break; |
297 | case LTTNG_EVENT_CONTEXT_SGID: | |
b8e2fb80 | 298 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_SGID; |
499cbfa1 MJ |
299 | break; |
300 | case LTTNG_EVENT_CONTEXT_VUID: | |
b8e2fb80 | 301 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VUID; |
499cbfa1 MJ |
302 | break; |
303 | case LTTNG_EVENT_CONTEXT_VEUID: | |
b8e2fb80 | 304 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VEUID; |
499cbfa1 MJ |
305 | break; |
306 | case LTTNG_EVENT_CONTEXT_VSUID: | |
b8e2fb80 | 307 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VSUID; |
499cbfa1 MJ |
308 | break; |
309 | case LTTNG_EVENT_CONTEXT_VGID: | |
b8e2fb80 | 310 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VGID; |
499cbfa1 MJ |
311 | break; |
312 | case LTTNG_EVENT_CONTEXT_VEGID: | |
b8e2fb80 | 313 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VEGID; |
499cbfa1 MJ |
314 | break; |
315 | case LTTNG_EVENT_CONTEXT_VSGID: | |
b8e2fb80 | 316 | kctx->ctx.ctx = LTTNG_KERNEL_ABI_CONTEXT_VSGID; |
499cbfa1 | 317 | break; |
9197c5c4 | 318 | default: |
fc7324e8 DG |
319 | ret = LTTNG_ERR_KERN_CONTEXT_FAIL; |
320 | goto error; | |
9197c5c4 MD |
321 | } |
322 | ||
645328ae DG |
323 | kctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; |
324 | kctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
28ab034a | 325 | strncpy(kctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, LTTNG_SYMBOL_NAME_LEN); |
645328ae | 326 | kctx->ctx.u.perf_counter.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; |
b579acd9 | 327 | |
9d035200 | 328 | if (*channel_name == '\0') { |
645328ae | 329 | ret = add_kctx_all_channels(ksession, kctx); |
df3c77c8 | 330 | /* Ownership of kctx is transferred to the callee. */ |
cd9adb8b | 331 | kctx = nullptr; |
f73fabfd | 332 | if (ret != LTTNG_OK) { |
b579acd9 DG |
333 | goto error; |
334 | } | |
335 | } else { | |
336 | /* Get kernel channel */ | |
62499ad6 | 337 | kchan = trace_kernel_get_channel_by_name(channel_name, ksession); |
cd9adb8b | 338 | if (kchan == nullptr) { |
f73fabfd | 339 | ret = LTTNG_ERR_KERN_CHAN_NOT_FOUND; |
b579acd9 DG |
340 | goto error; |
341 | } | |
342 | ||
645328ae | 343 | ret = add_kctx_to_channel(kctx, kchan); |
df3c77c8 | 344 | /* Ownership of kctx is transferred to the callee. */ |
cd9adb8b | 345 | kctx = nullptr; |
f73fabfd | 346 | if (ret != LTTNG_OK) { |
b579acd9 DG |
347 | goto error; |
348 | } | |
349 | } | |
350 | ||
df3c77c8 | 351 | ret = LTTNG_OK; |
b579acd9 DG |
352 | |
353 | error: | |
fc7324e8 DG |
354 | if (kctx) { |
355 | trace_kernel_destroy_context(kctx); | |
356 | } | |
b579acd9 DG |
357 | return ret; |
358 | } | |
2bdd86d4 MD |
359 | |
360 | /* | |
55cc08a6 | 361 | * Add UST context to tracer. |
2bdd86d4 | 362 | */ |
4ce7709b | 363 | int context_ust_add(struct ltt_ust_session *usess, |
28ab034a JG |
364 | enum lttng_domain_type domain, |
365 | const struct lttng_event_context *ctx, | |
366 | const char *channel_name) | |
2bdd86d4 | 367 | { |
601d5acf | 368 | int ret = LTTNG_OK; |
442359c0 | 369 | struct lttng_ht_iter iter; |
bec39940 | 370 | struct lttng_ht *chan_ht; |
cd9adb8b | 371 | struct ltt_ust_channel *uchan = nullptr; |
2bdd86d4 | 372 | |
a0377dfe FD |
373 | LTTNG_ASSERT(usess); |
374 | LTTNG_ASSERT(ctx); | |
375 | LTTNG_ASSERT(channel_name); | |
0525e9ae | 376 | |
2223c96f DG |
377 | rcu_read_lock(); |
378 | ||
f5501dad | 379 | chan_ht = usess->domain_global.channels; |
2bdd86d4 | 380 | |
55cc08a6 | 381 | /* Get UST channel if defined */ |
9f9ee9c9 | 382 | if (channel_name[0] != '\0') { |
55cc08a6 | 383 | uchan = trace_ust_find_channel_by_name(chan_ht, channel_name); |
cd9adb8b | 384 | if (uchan == nullptr) { |
f73fabfd | 385 | ret = LTTNG_ERR_UST_CHAN_NOT_FOUND; |
2bdd86d4 MD |
386 | goto error; |
387 | } | |
55cc08a6 DG |
388 | } |
389 | ||
601d5acf DG |
390 | if (uchan) { |
391 | /* Add ctx to channel */ | |
6b79ed20 | 392 | ret = add_uctx_to_channel(usess, domain, uchan, ctx); |
601d5acf | 393 | } else { |
e7fe706f | 394 | rcu_read_lock(); |
601d5acf | 395 | /* Add ctx all events, all channels */ |
28ab034a | 396 | cds_lfht_for_each_entry (chan_ht->ht, &iter.iter, uchan, node.node) { |
6b79ed20 | 397 | ret = add_uctx_to_channel(usess, domain, uchan, ctx); |
7682f304 | 398 | if (ret) { |
28ab034a | 399 | ERR("Failed to add context to channel %s", uchan->name); |
55cc08a6 DG |
400 | continue; |
401 | } | |
2bdd86d4 | 402 | } |
e7fe706f | 403 | rcu_read_unlock(); |
55cc08a6 | 404 | } |
2bdd86d4 | 405 | |
55cc08a6 | 406 | switch (ret) { |
7682f304 | 407 | case LTTNG_ERR_UST_CONTEXT_EXIST: |
727d5404 | 408 | break; |
55cc08a6 | 409 | case -ENOMEM: |
7682f304 | 410 | case -LTTNG_ERR_NOMEM: |
f73fabfd | 411 | ret = LTTNG_ERR_FATAL; |
727d5404 DG |
412 | break; |
413 | case -EINVAL: | |
f73fabfd | 414 | ret = LTTNG_ERR_UST_CONTEXT_INVAL; |
727d5404 DG |
415 | break; |
416 | case -ENOSYS: | |
f73fabfd | 417 | ret = LTTNG_ERR_UNKNOWN_DOMAIN; |
727d5404 DG |
418 | break; |
419 | default: | |
7682f304 JG |
420 | if (ret != 0 && ret != LTTNG_OK) { |
421 | ret = ret > 0 ? ret : LTTNG_ERR_UNK; | |
422 | } else { | |
423 | ret = LTTNG_OK; | |
424 | } | |
727d5404 | 425 | break; |
2bdd86d4 MD |
426 | } |
427 | ||
2bdd86d4 | 428 | error: |
2223c96f | 429 | rcu_read_unlock(); |
2bdd86d4 MD |
430 | return ret; |
431 | } |