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1ce46cfe JG |
1 | /* |
2 | * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #include <assert.h> | |
19 | #include <common/error.h> | |
20 | #include <common/macros.h> | |
21 | #include <common/compat/string.h> | |
22 | #include <fcntl.h> | |
23 | #include <lttng/constant.h> | |
24 | #include <lttng/userspace-probe-internal.h> | |
25 | ||
26 | enum lttng_userspace_probe_location_lookup_method_type | |
27 | lttng_userspace_probe_location_lookup_method_get_type( | |
28 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
29 | { | |
30 | return lookup_method ? lookup_method->type : | |
31 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
32 | } | |
33 | ||
34 | void lttng_userspace_probe_location_lookup_method_destroy( | |
35 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
36 | { | |
37 | if (!lookup_method){ | |
38 | return; | |
39 | } | |
40 | ||
5d21f143 | 41 | free(lookup_method); |
1ce46cfe JG |
42 | } |
43 | ||
44 | struct lttng_userspace_probe_location_lookup_method * | |
45 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
46 | { | |
47 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
48 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
49 | ||
50 | elf_method = zmalloc(sizeof(*elf_method)); | |
51 | if (!elf_method) { | |
52 | PERROR("zmalloc"); | |
53 | goto end; | |
54 | } | |
55 | ||
56 | ret = &elf_method->parent; | |
57 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
58 | end: | |
59 | return ret; | |
60 | } | |
61 | ||
f4d0bb2e FD |
62 | struct lttng_userspace_probe_location_lookup_method * |
63 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
64 | { | |
65 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
66 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
67 | ||
68 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
69 | if (!sdt_method) { | |
70 | PERROR("zmalloc"); | |
71 | goto end; | |
72 | } | |
73 | ||
74 | ret = &sdt_method->parent; | |
75 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
76 | end: | |
77 | return ret; | |
78 | } | |
79 | ||
1ce46cfe JG |
80 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
81 | const struct lttng_userspace_probe_location *location) | |
82 | { | |
83 | return location ? location->type : | |
84 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
85 | } | |
86 | ||
87 | static | |
88 | void lttng_userspace_probe_location_function_destroy( | |
89 | struct lttng_userspace_probe_location *location) | |
90 | { | |
91 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
92 | ||
93 | assert(location); | |
94 | ||
95 | location_function = container_of(location, | |
96 | struct lttng_userspace_probe_location_function, parent); | |
97 | ||
98 | assert(location_function); | |
99 | ||
100 | free(location_function->function_name); | |
101 | free(location_function->binary_path); | |
102 | if (location_function->binary_fd >= 0) { | |
103 | if (close(location_function->binary_fd)) { | |
104 | PERROR("close"); | |
105 | } | |
106 | } | |
107 | free(location); | |
108 | } | |
109 | ||
f4d0bb2e FD |
110 | static |
111 | void lttng_userspace_probe_location_tracepoint_destroy( | |
112 | struct lttng_userspace_probe_location *location) | |
113 | { | |
114 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
115 | ||
116 | assert(location); | |
117 | ||
118 | location_tracepoint = container_of(location, | |
119 | struct lttng_userspace_probe_location_tracepoint, | |
120 | parent); | |
121 | ||
122 | assert(location_tracepoint); | |
123 | ||
124 | free(location_tracepoint->probe_name); | |
125 | free(location_tracepoint->provider_name); | |
126 | free(location_tracepoint->binary_path); | |
127 | if (location_tracepoint->binary_fd >= 0) { | |
128 | if (close(location_tracepoint->binary_fd)) { | |
129 | PERROR("close"); | |
130 | } | |
131 | } | |
132 | free(location); | |
133 | } | |
134 | ||
1ce46cfe JG |
135 | void lttng_userspace_probe_location_destroy( |
136 | struct lttng_userspace_probe_location *location) | |
137 | { | |
138 | if (!location) { | |
139 | return; | |
140 | } | |
141 | ||
142 | lttng_userspace_probe_location_lookup_method_destroy( | |
143 | location->lookup_method); | |
144 | ||
145 | switch (location->type) { | |
146 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
147 | lttng_userspace_probe_location_function_destroy(location); | |
148 | break; | |
f4d0bb2e FD |
149 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
150 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
151 | break; | |
1ce46cfe | 152 | default: |
adf53c67 | 153 | abort(); |
1ce46cfe JG |
154 | } |
155 | } | |
156 | ||
157 | static struct lttng_userspace_probe_location * | |
158 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
159 | const char *function_name, | |
160 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
161 | bool open_binary) | |
162 | { | |
163 | int binary_fd = -1; | |
164 | char *function_name_copy = NULL, *binary_path_copy = NULL; | |
165 | struct lttng_userspace_probe_location *ret = NULL; | |
166 | struct lttng_userspace_probe_location_function *location; | |
167 | ||
168 | if (open_binary) { | |
169 | binary_fd = open(binary_path, O_RDONLY); | |
170 | if (binary_fd < 0) { | |
171 | PERROR("Error opening the binary"); | |
172 | goto error; | |
173 | } | |
174 | } else { | |
175 | binary_fd = -1; | |
176 | } | |
177 | ||
178 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
179 | if (!function_name_copy) { | |
180 | PERROR("Error duplicating the function name"); | |
181 | goto error; | |
182 | } | |
183 | ||
184 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
185 | if (!binary_path_copy) { | |
186 | PERROR("Error duplicating the function name"); | |
187 | goto error; | |
188 | } | |
189 | ||
190 | location = zmalloc(sizeof(*location)); | |
191 | if (!location) { | |
192 | PERROR("Error allocating userspace probe location"); | |
193 | goto error; | |
194 | } | |
195 | ||
196 | location->function_name = function_name_copy; | |
197 | location->binary_path = binary_path_copy; | |
198 | location->binary_fd = binary_fd; | |
9d3981b5 JG |
199 | location->instrumentation_type = |
200 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
201 | |
202 | ret = &location->parent; | |
203 | ret->lookup_method = lookup_method; | |
204 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
205 | goto end; | |
206 | ||
207 | error: | |
208 | free(function_name_copy); | |
209 | free(binary_path_copy); | |
210 | if (binary_fd >= 0) { | |
211 | if (close(binary_fd)) { | |
212 | PERROR("Error closing binary fd in error path"); | |
213 | } | |
214 | } | |
215 | end: | |
216 | return ret; | |
217 | } | |
218 | ||
f4d0bb2e FD |
219 | static struct lttng_userspace_probe_location * |
220 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
221 | const char *provider_name, const char *probe_name, | |
222 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
223 | bool open_binary) | |
224 | { | |
225 | int binary_fd = -1; | |
226 | char *probe_name_copy = NULL; | |
227 | char *provider_name_copy = NULL; | |
228 | char *binary_path_copy = NULL; | |
229 | struct lttng_userspace_probe_location *ret = NULL; | |
230 | struct lttng_userspace_probe_location_tracepoint *location; | |
231 | ||
232 | if (open_binary) { | |
233 | binary_fd = open(binary_path, O_RDONLY); | |
234 | if (binary_fd < 0) { | |
235 | PERROR("open"); | |
236 | goto error; | |
237 | } | |
238 | } else { | |
239 | binary_fd = -1; | |
240 | } | |
241 | ||
242 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
243 | if (!probe_name_copy) { | |
244 | PERROR("lttng_strndup"); | |
245 | goto error; | |
246 | } | |
247 | ||
248 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
249 | if (!provider_name_copy) { | |
250 | PERROR("lttng_strndup"); | |
251 | goto error; | |
252 | } | |
253 | ||
254 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
255 | if (!binary_path_copy) { | |
256 | PERROR("lttng_strndup"); | |
257 | goto error; | |
258 | } | |
259 | ||
260 | location = zmalloc(sizeof(*location)); | |
261 | if (!location) { | |
262 | PERROR("zmalloc"); | |
263 | goto error; | |
264 | } | |
265 | ||
266 | location->probe_name = probe_name_copy; | |
267 | location->provider_name = provider_name_copy; | |
268 | location->binary_path = binary_path_copy; | |
269 | location->binary_fd = binary_fd; | |
270 | ||
271 | ret = &location->parent; | |
272 | ret->lookup_method = lookup_method; | |
273 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
274 | goto end; | |
275 | ||
276 | error: | |
277 | free(probe_name_copy); | |
278 | free(provider_name_copy); | |
279 | if (binary_fd >= 0) { | |
280 | if (close(binary_fd)) { | |
281 | PERROR("Error closing binary fd in error path"); | |
282 | } | |
283 | } | |
284 | end: | |
285 | return ret; | |
286 | } | |
287 | ||
1ce46cfe JG |
288 | struct lttng_userspace_probe_location * |
289 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
290 | const char *function_name, | |
291 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
292 | { | |
293 | struct lttng_userspace_probe_location *ret = NULL; | |
294 | ||
295 | if (!binary_path || !function_name) { | |
296 | ERR("Invalid argument(s)"); | |
297 | goto end; | |
298 | } | |
299 | ||
300 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
301 | lookup_method)) { | |
302 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
303 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
304 | break; | |
305 | default: | |
306 | /* Invalid probe location lookup method. */ | |
307 | goto end; | |
308 | } | |
309 | ||
310 | ret = lttng_userspace_probe_location_function_create_no_check( | |
311 | binary_path, function_name, lookup_method, true); | |
312 | end: | |
313 | return ret; | |
314 | } | |
315 | ||
f4d0bb2e FD |
316 | struct lttng_userspace_probe_location * |
317 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
318 | const char *provider_name, const char *probe_name, | |
319 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
320 | { | |
321 | struct lttng_userspace_probe_location *ret = NULL; | |
322 | ||
323 | if (!binary_path || !probe_name || !provider_name) { | |
324 | ERR("Invalid argument(s)"); | |
325 | goto end; | |
326 | } | |
327 | ||
328 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
329 | lookup_method)) { | |
330 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
331 | break; | |
332 | default: | |
333 | /* Invalid probe location lookup method. */ | |
334 | goto end; | |
335 | } | |
336 | ||
337 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
338 | binary_path, provider_name, probe_name, lookup_method, true); | |
339 | end: | |
340 | return ret; | |
341 | } | |
342 | ||
394357fe FD |
343 | static struct lttng_userspace_probe_location_lookup_method * |
344 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
345 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
346 | { | |
347 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
348 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
349 | ||
350 | assert(lookup_method); | |
351 | assert(lookup_method->type == | |
352 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); | |
353 | ||
354 | elf_method = zmalloc(sizeof(*elf_method)); | |
355 | if (!elf_method) { | |
356 | PERROR("Error allocating ELF userspace probe lookup method"); | |
357 | goto error; | |
358 | } | |
359 | ||
360 | elf_method->parent.type = lookup_method->type; | |
361 | parent = &elf_method->parent; | |
362 | ||
363 | goto end; | |
364 | error: | |
365 | parent = NULL; | |
366 | end: | |
367 | return parent; | |
368 | } | |
369 | ||
f4d0bb2e FD |
370 | static struct lttng_userspace_probe_location_lookup_method * |
371 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
372 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
373 | { | |
374 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
375 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
376 | ||
377 | assert(lookup_method); | |
378 | assert(lookup_method->type == | |
379 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); | |
380 | ||
381 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
382 | if (!sdt_method) { | |
383 | PERROR("zmalloc"); | |
384 | goto error; | |
385 | } | |
386 | ||
387 | sdt_method->parent.type = lookup_method->type; | |
388 | parent = &sdt_method->parent; | |
389 | ||
390 | goto end; | |
391 | ||
392 | error: | |
393 | parent = NULL; | |
394 | end: | |
395 | return parent; | |
396 | } | |
397 | ||
394357fe FD |
398 | static struct lttng_userspace_probe_location * |
399 | lttng_userspace_probe_location_function_copy( | |
400 | const struct lttng_userspace_probe_location *location) | |
401 | { | |
402 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
403 | struct lttng_userspace_probe_location *new_location = NULL; | |
404 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
405 | char *binary_path = NULL; | |
406 | char *function_name = NULL; | |
407 | int fd; | |
408 | ||
409 | assert(location); | |
410 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
411 | ||
412 | /* Duplicate probe location fields */ | |
413 | binary_path = | |
414 | lttng_strndup(lttng_userspace_probe_location_function_get_binary_path(location), | |
415 | LTTNG_PATH_MAX); | |
416 | if (!binary_path) { | |
417 | goto error; | |
418 | } | |
419 | ||
420 | function_name = | |
421 | lttng_strndup(lttng_userspace_probe_location_function_get_function_name(location), | |
422 | LTTNG_SYMBOL_NAME_LEN); | |
423 | if (!function_name) { | |
424 | PERROR("Error duplicating function name string"); | |
425 | goto error; | |
426 | } | |
427 | ||
428 | /* Duplicate the binary fd */ | |
429 | fd = dup(lttng_userspace_probe_location_function_get_binary_fd(location)); | |
430 | if (fd == -1) { | |
431 | PERROR("Error duplicating file descriptor to binary"); | |
432 | goto error; | |
433 | } | |
434 | ||
435 | /* | |
436 | * Duplicate probe location method fields | |
437 | */ | |
438 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
439 | location->lookup_method); | |
440 | switch (lookup_type) { | |
441 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
442 | lookup_method = | |
443 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
444 | location->lookup_method); | |
445 | if (!lookup_method) { | |
446 | goto close_fd; | |
447 | } | |
448 | break; | |
449 | default: | |
450 | /* Invalid probe location lookup method. */ | |
451 | goto close_fd; | |
452 | } | |
453 | ||
454 | /* Create the probe_location */ | |
455 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
456 | binary_path, function_name, lookup_method, true); | |
457 | if (!new_location) { | |
458 | goto destroy_lookup_method; | |
459 | } | |
460 | ||
461 | /* Set the duplicated fd to the new probe_location */ | |
462 | if (lttng_userspace_probe_location_function_set_binary_fd(new_location, fd) < 0) { | |
463 | goto destroy_probe_location; | |
464 | } | |
465 | ||
466 | goto end; | |
467 | ||
468 | destroy_probe_location: | |
469 | lttng_userspace_probe_location_destroy(new_location); | |
470 | destroy_lookup_method: | |
471 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
472 | close_fd: | |
473 | if (close(fd) < 0) { | |
474 | PERROR("Error closing duplicated file descriptor in error path"); | |
475 | } | |
476 | error: | |
477 | free(function_name); | |
478 | free(binary_path); | |
479 | new_location = NULL; | |
480 | end: | |
481 | return new_location; | |
482 | } | |
483 | ||
f4d0bb2e FD |
484 | static struct lttng_userspace_probe_location * |
485 | lttng_userspace_probe_location_tracepoint_copy( | |
486 | const struct lttng_userspace_probe_location *location) | |
487 | { | |
488 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
489 | struct lttng_userspace_probe_location *new_location = NULL; | |
490 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
491 | char *binary_path = NULL; | |
492 | char *probe_name = NULL; | |
493 | char *provider_name = NULL; | |
494 | int fd; | |
495 | ||
496 | assert(location); | |
497 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
498 | ||
499 | /* Duplicate probe location fields */ | |
500 | binary_path = | |
501 | lttng_strndup(lttng_userspace_probe_location_tracepoint_get_binary_path(location), | |
502 | LTTNG_PATH_MAX); | |
503 | if (!binary_path) { | |
504 | PERROR("lttng_strndup"); | |
505 | goto error; | |
506 | } | |
507 | ||
508 | probe_name = | |
509 | lttng_strndup(lttng_userspace_probe_location_tracepoint_get_probe_name(location), | |
510 | LTTNG_SYMBOL_NAME_LEN); | |
511 | if (!probe_name) { | |
512 | PERROR("lttng_strndup"); | |
513 | goto error; | |
514 | } | |
515 | ||
516 | provider_name = | |
517 | lttng_strndup(lttng_userspace_probe_location_tracepoint_get_provider_name(location), | |
518 | LTTNG_SYMBOL_NAME_LEN); | |
519 | if (!provider_name) { | |
520 | PERROR("lttng_strndup"); | |
521 | goto error; | |
522 | } | |
523 | ||
524 | /* Duplicate the binary fd */ | |
525 | fd = dup(lttng_userspace_probe_location_tracepoint_get_binary_fd(location)); | |
526 | if (fd == -1) { | |
527 | PERROR("dup"); | |
528 | goto error; | |
529 | } | |
530 | ||
531 | /* | |
532 | * Duplicate probe location method fields | |
533 | */ | |
534 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
535 | location->lookup_method); | |
536 | switch (lookup_type) { | |
537 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
538 | lookup_method = | |
539 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
540 | location->lookup_method); | |
541 | if (!lookup_method) { | |
542 | goto close_fd; | |
543 | } | |
544 | break; | |
545 | default: | |
546 | /* Invalid probe location lookup method. */ | |
547 | goto close_fd; | |
548 | } | |
549 | ||
550 | /* Create the probe_location */ | |
551 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
552 | binary_path, provider_name, probe_name, lookup_method, true); | |
553 | if (!new_location) { | |
554 | goto destroy_lookup_method; | |
555 | } | |
556 | ||
557 | /* Set the duplicated fd to the new probe_location */ | |
558 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd(new_location, fd) < 0) { | |
559 | goto destroy_probe_location; | |
560 | } | |
561 | ||
562 | goto end; | |
563 | ||
564 | destroy_probe_location: | |
565 | lttng_userspace_probe_location_destroy(new_location); | |
566 | destroy_lookup_method: | |
567 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
568 | close_fd: | |
569 | if (close(fd) < 0) { | |
570 | PERROR("close"); | |
571 | } | |
572 | error: | |
573 | free(provider_name); | |
574 | free(probe_name); | |
575 | free(binary_path); | |
576 | new_location = NULL; | |
577 | end: | |
578 | return new_location; | |
579 | } | |
580 | ||
1ce46cfe JG |
581 | const char *lttng_userspace_probe_location_function_get_binary_path( |
582 | const struct lttng_userspace_probe_location *location) | |
583 | { | |
584 | const char *ret = NULL; | |
585 | struct lttng_userspace_probe_location_function *function_location; | |
586 | ||
587 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
588 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
589 | ERR("Invalid argument(s)"); | |
590 | goto end; | |
591 | } | |
592 | ||
593 | function_location = container_of(location, | |
594 | struct lttng_userspace_probe_location_function, | |
595 | parent); | |
596 | ret = function_location->binary_path; | |
597 | end: | |
598 | return ret; | |
599 | } | |
600 | ||
f4d0bb2e FD |
601 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
602 | const struct lttng_userspace_probe_location *location) | |
603 | { | |
604 | const char *ret = NULL; | |
605 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
606 | ||
607 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
608 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
609 | ERR("Invalid argument(s)"); | |
610 | goto end; | |
611 | } | |
612 | ||
613 | tracepoint_location = container_of(location, | |
614 | struct lttng_userspace_probe_location_tracepoint, | |
615 | parent); | |
616 | ret = tracepoint_location->binary_path; | |
617 | end: | |
618 | return ret; | |
619 | } | |
620 | ||
1ce46cfe JG |
621 | const char *lttng_userspace_probe_location_function_get_function_name( |
622 | const struct lttng_userspace_probe_location *location) | |
623 | { | |
624 | const char *ret = NULL; | |
625 | struct lttng_userspace_probe_location_function *function_location; | |
626 | ||
627 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
628 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
629 | ERR("Invalid argument(s)"); | |
630 | goto end; | |
631 | } | |
632 | ||
633 | function_location = container_of(location, | |
634 | struct lttng_userspace_probe_location_function, parent); | |
635 | ret = function_location->function_name; | |
636 | end: | |
637 | return ret; | |
638 | } | |
639 | ||
f4d0bb2e FD |
640 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
641 | const struct lttng_userspace_probe_location *location) | |
642 | { | |
643 | const char *ret = NULL; | |
644 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
645 | ||
646 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
647 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
648 | ERR("Invalid argument(s)"); | |
649 | goto end; | |
650 | } | |
651 | ||
652 | tracepoint_location = container_of(location, | |
653 | struct lttng_userspace_probe_location_tracepoint, parent); | |
654 | ret = tracepoint_location->probe_name; | |
655 | end: | |
656 | return ret; | |
657 | } | |
658 | ||
659 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
660 | const struct lttng_userspace_probe_location *location) | |
661 | { | |
662 | const char *ret = NULL; | |
663 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
664 | ||
665 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
666 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
667 | ERR("Invalid argument(s)"); | |
668 | goto end; | |
669 | } | |
670 | ||
671 | tracepoint_location = container_of(location, | |
672 | struct lttng_userspace_probe_location_tracepoint, parent); | |
673 | ret = tracepoint_location->provider_name; | |
674 | end: | |
675 | return ret; | |
676 | } | |
677 | ||
1ce46cfe JG |
678 | int lttng_userspace_probe_location_function_get_binary_fd( |
679 | const struct lttng_userspace_probe_location *location) | |
680 | { | |
681 | int ret = -1; | |
682 | struct lttng_userspace_probe_location_function *function_location; | |
683 | ||
684 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
685 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
686 | ERR("Invalid argument(s)"); | |
687 | goto end; | |
688 | } | |
689 | ||
690 | function_location = container_of(location, | |
691 | struct lttng_userspace_probe_location_function, parent); | |
692 | ret = function_location->binary_fd; | |
693 | end: | |
694 | return ret; | |
695 | } | |
696 | ||
9d3981b5 JG |
697 | enum lttng_userspace_probe_location_function_instrumentation_type |
698 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
699 | const struct lttng_userspace_probe_location *location) | |
700 | { | |
701 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
702 | struct lttng_userspace_probe_location_function *function_location; | |
703 | ||
704 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
705 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
706 | ERR("Invalid argument(s)"); | |
707 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; | |
708 | goto end; | |
709 | } | |
710 | ||
711 | function_location = container_of(location, | |
712 | struct lttng_userspace_probe_location_function, parent); | |
713 | type = function_location->instrumentation_type; | |
714 | end: | |
715 | return type; | |
716 | } | |
717 | ||
718 | enum lttng_userspace_probe_location_status | |
719 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
720 | const struct lttng_userspace_probe_location *location, | |
721 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
722 | { | |
723 | enum lttng_userspace_probe_location_status status = | |
724 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
725 | struct lttng_userspace_probe_location_function *function_location; | |
726 | ||
727 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
728 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
729 | instrumentation_type != | |
730 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
731 | ERR("Invalid argument(s)"); | |
732 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; | |
733 | goto end; | |
734 | } | |
735 | ||
736 | function_location = container_of(location, | |
737 | struct lttng_userspace_probe_location_function, parent); | |
738 | function_location->instrumentation_type = instrumentation_type; | |
739 | end: | |
740 | return status; | |
741 | } | |
742 | ||
f4d0bb2e FD |
743 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
744 | const struct lttng_userspace_probe_location *location) | |
745 | { | |
746 | int ret = -1; | |
747 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
748 | ||
749 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
750 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
751 | ERR("Invalid argument(s)"); | |
752 | goto end; | |
753 | } | |
754 | ||
755 | tracepoint_location = container_of(location, | |
756 | struct lttng_userspace_probe_location_tracepoint, parent); | |
757 | ret = tracepoint_location->binary_fd; | |
758 | end: | |
759 | return ret; | |
760 | } | |
761 | ||
1ce46cfe JG |
762 | static struct lttng_userspace_probe_location_lookup_method * |
763 | lttng_userspace_probe_location_function_get_lookup_method( | |
764 | const struct lttng_userspace_probe_location *location) | |
765 | { | |
766 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
767 | ||
768 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
769 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
770 | ERR("Invalid argument(s)"); | |
771 | goto end; | |
772 | } | |
773 | ||
774 | ret = location->lookup_method; | |
775 | end: | |
776 | return ret; | |
777 | } | |
778 | ||
f4d0bb2e FD |
779 | static struct lttng_userspace_probe_location_lookup_method * |
780 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
781 | const struct lttng_userspace_probe_location *location) | |
782 | { | |
783 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
784 | ||
785 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
786 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
787 | ERR("Invalid argument(s)"); | |
788 | goto end; | |
789 | } | |
790 | ||
791 | ret = location->lookup_method; | |
792 | end: | |
793 | return ret; | |
794 | } | |
795 | ||
87597c2c | 796 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
797 | lttng_userspace_probe_location_get_lookup_method( |
798 | const struct lttng_userspace_probe_location *location) | |
799 | { | |
800 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
801 | ||
802 | assert(location); | |
803 | switch (location->type) { | |
804 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
805 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
806 | location); | |
807 | break; | |
f4d0bb2e FD |
808 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
809 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
810 | location); | |
811 | break; | |
1ce46cfe JG |
812 | default: |
813 | ERR("Unknowned lookup method."); | |
814 | break; | |
815 | } | |
816 | return ret; | |
817 | } | |
818 | ||
819 | static | |
820 | int lttng_userspace_probe_location_lookup_method_serialize( | |
821 | struct lttng_userspace_probe_location_lookup_method *method, | |
822 | struct lttng_dynamic_buffer *buffer) | |
823 | { | |
824 | int ret; | |
825 | struct lttng_userspace_probe_location_lookup_method_comm | |
826 | lookup_method_comm; | |
827 | ||
828 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
829 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
830 | if (buffer) { | |
831 | ret = lttng_dynamic_buffer_append(buffer, &lookup_method_comm, | |
832 | sizeof(lookup_method_comm)); | |
833 | if (ret) { | |
834 | goto end; | |
835 | } | |
836 | } | |
f4d0bb2e FD |
837 | ret = sizeof(lookup_method_comm); |
838 | end: | |
839 | return ret; | |
840 | } | |
841 | ||
842 | static | |
843 | int lttng_userspace_probe_location_function_serialize( | |
844 | const struct lttng_userspace_probe_location *location, | |
845 | struct lttng_dynamic_buffer *buffer, | |
846 | int *binary_fd) | |
847 | { | |
848 | int ret; | |
849 | size_t function_name_len, binary_path_len; | |
850 | struct lttng_userspace_probe_location_function *location_function; | |
851 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
852 | ||
853 | assert(location); | |
854 | assert(lttng_userspace_probe_location_get_type(location) == | |
855 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
856 | ||
857 | location_function = container_of(location, | |
858 | struct lttng_userspace_probe_location_function, | |
859 | parent); | |
860 | if (!location_function->function_name || !location_function->binary_path) { | |
861 | ret = -LTTNG_ERR_INVALID; | |
862 | goto end; | |
863 | } | |
864 | ||
865 | if (binary_fd && location_function->binary_fd < 0) { | |
866 | ret = -LTTNG_ERR_INVALID; | |
867 | goto end; | |
868 | } | |
869 | ||
870 | if (binary_fd) { | |
871 | *binary_fd = location_function->binary_fd; | |
872 | } | |
873 | ||
874 | function_name_len = strlen(location_function->function_name); | |
875 | if (function_name_len == 0) { | |
876 | ret = -LTTNG_ERR_INVALID; | |
877 | goto end; | |
878 | } | |
879 | binary_path_len = strlen(location_function->binary_path); | |
880 | if (binary_path_len == 0) { | |
881 | ret = -LTTNG_ERR_INVALID; | |
882 | goto end; | |
883 | } | |
884 | ||
885 | location_function_comm.function_name_len = function_name_len + 1; | |
886 | location_function_comm.binary_path_len = binary_path_len + 1; | |
887 | ||
888 | if (buffer) { | |
889 | ret = lttng_dynamic_buffer_append(buffer, | |
890 | &location_function_comm, | |
891 | sizeof(location_function_comm)); | |
892 | if (ret) { | |
893 | ret = -LTTNG_ERR_INVALID; | |
894 | goto end; | |
895 | } | |
896 | ret = lttng_dynamic_buffer_append(buffer, | |
897 | location_function->function_name, | |
898 | location_function_comm.function_name_len); | |
899 | if (ret) { | |
900 | ret = -LTTNG_ERR_INVALID; | |
901 | goto end; | |
902 | } | |
903 | ret = lttng_dynamic_buffer_append(buffer, | |
904 | location_function->binary_path, | |
905 | location_function_comm.binary_path_len); | |
906 | if (ret) { | |
907 | ret = -LTTNG_ERR_INVALID; | |
908 | goto end; | |
909 | } | |
910 | } | |
911 | ret = sizeof(location_function_comm) + | |
912 | location_function_comm.function_name_len + | |
913 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
914 | end: |
915 | return ret; | |
916 | } | |
917 | ||
918 | static | |
f4d0bb2e | 919 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe JG |
920 | const struct lttng_userspace_probe_location *location, |
921 | struct lttng_dynamic_buffer *buffer, | |
922 | int *binary_fd) | |
923 | { | |
924 | int ret; | |
f4d0bb2e FD |
925 | size_t probe_name_len, provider_name_len, binary_path_len; |
926 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
927 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe JG |
928 | |
929 | assert(location); | |
930 | assert(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 931 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 932 | |
f4d0bb2e FD |
933 | location_tracepoint = container_of(location, |
934 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 935 | parent); |
f4d0bb2e FD |
936 | if (!location_tracepoint->probe_name || |
937 | !location_tracepoint->provider_name || | |
938 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
939 | ret = -LTTNG_ERR_INVALID; |
940 | goto end; | |
941 | } | |
942 | ||
f4d0bb2e | 943 | if (binary_fd && location_tracepoint->binary_fd < 0) { |
1ce46cfe JG |
944 | ret = -LTTNG_ERR_INVALID; |
945 | goto end; | |
946 | } | |
947 | ||
948 | if (binary_fd) { | |
f4d0bb2e | 949 | *binary_fd = location_tracepoint->binary_fd; |
1ce46cfe JG |
950 | } |
951 | ||
f4d0bb2e FD |
952 | probe_name_len = strlen(location_tracepoint->probe_name); |
953 | if (probe_name_len == 0) { | |
1ce46cfe JG |
954 | ret = -LTTNG_ERR_INVALID; |
955 | goto end; | |
956 | } | |
f4d0bb2e FD |
957 | |
958 | provider_name_len = strlen(location_tracepoint->provider_name); | |
959 | if (provider_name_len == 0) { | |
960 | ret = -LTTNG_ERR_INVALID; | |
961 | goto end; | |
962 | } | |
963 | ||
964 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
965 | if (binary_path_len == 0) { |
966 | ret = -LTTNG_ERR_INVALID; | |
967 | goto end; | |
968 | } | |
969 | ||
f4d0bb2e FD |
970 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
971 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
972 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe JG |
973 | |
974 | if (buffer) { | |
975 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
976 | &location_tracepoint_comm, |
977 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
978 | if (ret) { |
979 | ret = -LTTNG_ERR_INVALID; | |
980 | goto end; | |
981 | } | |
982 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
983 | location_tracepoint->probe_name, |
984 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
985 | if (ret) { |
986 | ret = -LTTNG_ERR_INVALID; | |
987 | goto end; | |
988 | } | |
989 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
990 | location_tracepoint->provider_name, |
991 | location_tracepoint_comm.provider_name_len); | |
992 | if (ret) { | |
993 | ret = -LTTNG_ERR_INVALID; | |
994 | goto end; | |
995 | } | |
996 | ret = lttng_dynamic_buffer_append(buffer, | |
997 | location_tracepoint->binary_path, | |
998 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
999 | if (ret) { |
1000 | ret = -LTTNG_ERR_INVALID; | |
1001 | goto end; | |
1002 | } | |
1003 | } | |
f4d0bb2e FD |
1004 | ret = sizeof(location_tracepoint_comm) + |
1005 | location_tracepoint_comm.probe_name_len + | |
1006 | location_tracepoint_comm.provider_name_len + | |
1007 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1008 | end: |
1009 | return ret; | |
1010 | } | |
1011 | ||
1012 | LTTNG_HIDDEN | |
1013 | int lttng_userspace_probe_location_serialize( | |
1014 | const struct lttng_userspace_probe_location *location, | |
1015 | struct lttng_dynamic_buffer *buffer, | |
1016 | int *binary_fd) | |
1017 | { | |
1018 | int ret, buffer_use = 0; | |
1019 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1020 | ||
1021 | if (!location) { | |
1022 | ERR("Invalid argument(s)"); | |
1023 | ret = -LTTNG_ERR_INVALID; | |
1024 | goto end; | |
1025 | } | |
1026 | ||
56f0bc67 JG |
1027 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1028 | ||
1ce46cfe JG |
1029 | location_generic_comm.type = (int8_t) location->type; |
1030 | if (buffer) { | |
1031 | ret = lttng_dynamic_buffer_append(buffer, &location_generic_comm, | |
1032 | sizeof(location_generic_comm)); | |
1033 | if (ret) { | |
1034 | goto end; | |
1035 | } | |
1036 | } | |
1037 | buffer_use += sizeof(location_generic_comm); | |
1038 | ||
1039 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1040 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1041 | ret = lttng_userspace_probe_location_function_serialize( | |
1042 | location, buffer, binary_fd); | |
1043 | break; | |
f4d0bb2e FD |
1044 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1045 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
1046 | location, buffer, binary_fd); | |
1047 | break; | |
1ce46cfe JG |
1048 | default: |
1049 | ERR("Unsupported probe location type"); | |
1050 | ret = -LTTNG_ERR_INVALID; | |
1051 | goto end; | |
1052 | } | |
1053 | if (ret < 0) { | |
1054 | goto end; | |
1055 | } | |
1056 | buffer_use += ret; | |
1057 | ||
1058 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
1059 | location->lookup_method, buffer); | |
1060 | if (ret < 0) { | |
1061 | goto end; | |
1062 | } | |
1063 | ret += buffer_use; | |
1064 | end: | |
1065 | return ret; | |
1066 | } | |
1067 | ||
1068 | static | |
1069 | int lttng_userspace_probe_location_function_create_from_buffer( | |
1070 | const struct lttng_buffer_view *buffer, | |
1071 | struct lttng_userspace_probe_location **location) | |
1072 | { | |
1073 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1074 | const char *function_name_src, *binary_path_src; | |
1075 | char *function_name = NULL, *binary_path = NULL; | |
1076 | int ret = 0; | |
1077 | ||
1078 | assert(buffer); | |
1079 | assert(buffer->data); | |
1080 | assert(location); | |
1081 | ||
1082 | location_function_comm = | |
1083 | (struct lttng_userspace_probe_location_function_comm *) buffer->data; | |
1084 | ||
1085 | const size_t expected_size = sizeof(*location_function_comm) + | |
1086 | location_function_comm->function_name_len + | |
1087 | location_function_comm->binary_path_len; | |
1088 | ||
1089 | if (buffer->size < expected_size) { | |
1090 | ret = -LTTNG_ERR_INVALID; | |
1091 | goto end; | |
1092 | } | |
1093 | ||
1094 | function_name_src = buffer->data + sizeof(*location_function_comm); | |
1095 | binary_path_src = function_name_src + | |
1096 | location_function_comm->function_name_len; | |
1097 | ||
1098 | if (function_name_src[location_function_comm->function_name_len - 1] != '\0') { | |
1099 | ret = -LTTNG_ERR_INVALID; | |
1100 | goto end; | |
1101 | } | |
1102 | if (binary_path_src[location_function_comm->binary_path_len - 1] != '\0') { | |
1103 | ret = -LTTNG_ERR_INVALID; | |
1104 | goto end; | |
1105 | } | |
1106 | ||
1107 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1108 | if (!function_name) { | |
1109 | PERROR("lttng_strndup"); | |
1110 | goto end; | |
1111 | } | |
1112 | ||
1113 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1114 | if (!binary_path) { | |
1115 | PERROR("lttng_strndup"); | |
1116 | goto end; | |
1117 | } | |
1118 | ||
1119 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1120 | binary_path, function_name, NULL, false); | |
1121 | if (!(*location)) { | |
1122 | ret = -LTTNG_ERR_INVALID; | |
1123 | goto end; | |
1124 | } | |
1125 | ||
1126 | ret = (int) expected_size; | |
1127 | end: | |
1128 | free(function_name); | |
1129 | free(binary_path); | |
1130 | return ret; | |
1131 | } | |
1132 | ||
f4d0bb2e FD |
1133 | static |
1134 | int lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1135 | const struct lttng_buffer_view *buffer, | |
1136 | struct lttng_userspace_probe_location **location) | |
1137 | { | |
1138 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1139 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1140 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1141 | int ret = 0; | |
1142 | ||
1143 | assert(buffer); | |
1144 | assert(buffer->data); | |
1145 | assert(location); | |
1146 | ||
1147 | location_tracepoint_comm = | |
1148 | (struct lttng_userspace_probe_location_tracepoint_comm *) buffer->data; | |
1149 | ||
1150 | const size_t expected_size = sizeof(*location_tracepoint_comm) + | |
1151 | location_tracepoint_comm->probe_name_len + | |
1152 | location_tracepoint_comm->provider_name_len + | |
1153 | location_tracepoint_comm->binary_path_len; | |
1154 | ||
1155 | if (buffer->size < expected_size) { | |
1156 | ret = -LTTNG_ERR_INVALID; | |
1157 | goto end; | |
1158 | } | |
1159 | ||
1160 | probe_name_src = buffer->data + sizeof(*location_tracepoint_comm); | |
1161 | provider_name_src = probe_name_src + | |
1162 | location_tracepoint_comm->probe_name_len; | |
1163 | binary_path_src = provider_name_src + | |
1164 | location_tracepoint_comm->provider_name_len; | |
1165 | ||
1166 | if (probe_name_src[location_tracepoint_comm->probe_name_len - 1] != '\0') { | |
1167 | ret = -LTTNG_ERR_INVALID; | |
1168 | goto end; | |
1169 | } | |
1170 | ||
1171 | if (provider_name_src[location_tracepoint_comm->provider_name_len - 1] != '\0') { | |
1172 | ret = -LTTNG_ERR_INVALID; | |
1173 | goto end; | |
1174 | } | |
1175 | ||
1176 | if (binary_path_src[location_tracepoint_comm->binary_path_len - 1] != '\0') { | |
1177 | ret = -LTTNG_ERR_INVALID; | |
1178 | goto end; | |
1179 | } | |
1180 | ||
1181 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1182 | if (!probe_name) { | |
1183 | PERROR("lttng_strndup"); | |
1184 | goto end; | |
1185 | } | |
1186 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1187 | if (!provider_name) { | |
1188 | PERROR("lttng_strndup"); | |
1189 | goto end; | |
1190 | } | |
1191 | ||
1192 | binary_path = lttng_strndup(binary_path_src, LTTNG_SYMBOL_NAME_LEN); | |
1193 | if (!binary_path) { | |
1194 | PERROR("lttng_strndup"); | |
1195 | goto end; | |
1196 | } | |
1197 | ||
1198 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1199 | binary_path, provider_name, probe_name, NULL, false); | |
1200 | if (!(*location)) { | |
1201 | ret = -LTTNG_ERR_INVALID; | |
1202 | goto end; | |
1203 | } | |
1204 | ||
1205 | ret = (int) expected_size; | |
1206 | end: | |
1207 | free(probe_name); | |
1208 | free(provider_name); | |
1209 | free(binary_path); | |
1210 | return ret; | |
1211 | } | |
1212 | ||
1ce46cfe JG |
1213 | static |
1214 | int lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1215 | struct lttng_buffer_view *buffer, | |
1216 | struct lttng_userspace_probe_location_lookup_method **lookup_method) | |
1217 | { | |
1218 | int ret; | |
1219 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1220 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1221 | ||
1222 | assert(buffer); | |
1223 | assert(buffer->data); | |
1224 | assert(lookup_method); | |
1225 | ||
1226 | if (buffer->size < sizeof(*lookup_comm)) { | |
1227 | ret = -LTTNG_ERR_INVALID; | |
1228 | goto end; | |
1229 | } | |
1230 | ||
1231 | lookup_comm = (struct lttng_userspace_probe_location_lookup_method_comm *) | |
1232 | buffer->data; | |
1233 | type = (enum lttng_userspace_probe_location_lookup_method_type) | |
1234 | lookup_comm->type; | |
1235 | switch (type) { | |
1236 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1237 | *lookup_method = NULL; | |
1238 | break; | |
1239 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1240 | *lookup_method = | |
1241 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1242 | if (!(*lookup_method)) { | |
1243 | ret = -LTTNG_ERR_INVALID; | |
1244 | goto end; | |
1245 | } | |
1246 | break; | |
f4d0bb2e FD |
1247 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1248 | *lookup_method = | |
1249 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1250 | if (!(*lookup_method)) { | |
1251 | ret = -LTTNG_ERR_INVALID; | |
1252 | goto end; | |
1253 | } | |
1254 | break; | |
1ce46cfe JG |
1255 | default: |
1256 | ret = -LTTNG_ERR_INVALID; | |
1257 | goto end; | |
1258 | } | |
1259 | ||
1260 | ret = sizeof(*lookup_comm); | |
1261 | end: | |
1262 | return ret; | |
1263 | } | |
1264 | ||
1265 | LTTNG_HIDDEN | |
1266 | int lttng_userspace_probe_location_create_from_buffer( | |
1267 | const struct lttng_buffer_view *buffer, | |
1268 | struct lttng_userspace_probe_location **location) | |
1269 | { | |
1270 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1271 | struct lttng_userspace_probe_location_comm *probe_location_comm; | |
1272 | enum lttng_userspace_probe_location_type type; | |
1273 | struct lttng_buffer_view lookup_method_view; | |
1274 | int consumed = 0; | |
1275 | int ret; | |
1276 | ||
1277 | ||
1278 | assert(buffer); | |
1279 | assert(buffer->data); | |
1280 | assert(location); | |
1281 | ||
1282 | lookup_method = NULL; | |
1283 | ||
1284 | if (buffer->size <= sizeof(*probe_location_comm)) { | |
1285 | ret = -LTTNG_ERR_INVALID; | |
1286 | goto end; | |
1287 | } | |
1288 | ||
1289 | probe_location_comm = | |
1290 | (struct lttng_userspace_probe_location_comm *) buffer->data; | |
1291 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; | |
1292 | consumed += sizeof(*probe_location_comm); | |
1293 | ||
1294 | switch (type) { | |
1295 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1296 | { | |
1297 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1298 | buffer, consumed, buffer->size - consumed); | |
1299 | ||
1300 | ret = lttng_userspace_probe_location_function_create_from_buffer( | |
1301 | &view, location); | |
1302 | if (ret < 0) { | |
1303 | goto end; | |
1304 | } | |
1305 | break; | |
1306 | } | |
f4d0bb2e FD |
1307 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1308 | { | |
1309 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1310 | buffer, consumed, buffer->size - consumed); | |
1311 | ||
1312 | ret = lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1313 | &view, location); | |
1314 | if (ret < 0) { | |
1315 | goto end; | |
1316 | } | |
1317 | break; | |
1318 | } | |
1ce46cfe JG |
1319 | default: |
1320 | ret = -LTTNG_ERR_INVALID; | |
1321 | goto end; | |
1322 | } | |
1323 | ||
1324 | consumed += ret; | |
1325 | if (buffer->size <= consumed) { | |
1326 | ret = -LTTNG_ERR_INVALID; | |
1327 | goto end; | |
1328 | } | |
1329 | ||
1330 | lookup_method_view = lttng_buffer_view_from_view(buffer, consumed, | |
1331 | buffer->size - consumed); | |
1332 | ret = lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1333 | &lookup_method_view, &lookup_method); | |
1334 | if (ret < 0) { | |
1335 | ret = -LTTNG_ERR_INVALID; | |
1336 | goto end; | |
1337 | } | |
1338 | ||
1339 | assert(lookup_method); | |
1340 | (*location)->lookup_method = lookup_method; | |
1341 | lookup_method = NULL; | |
1342 | ret += consumed; | |
1343 | end: | |
1344 | return ret; | |
1345 | } | |
1346 | ||
1347 | LTTNG_HIDDEN | |
1348 | int lttng_userspace_probe_location_function_set_binary_fd( | |
1349 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1350 | { | |
1351 | int ret = 0; | |
1352 | struct lttng_userspace_probe_location_function *function_location; | |
1353 | ||
1354 | assert(location); | |
1355 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1356 | ||
1357 | function_location = container_of(location, | |
1358 | struct lttng_userspace_probe_location_function, parent); | |
1359 | if (function_location->binary_fd >= 0) { | |
1360 | ret = close(function_location->binary_fd); | |
1361 | if (ret) { | |
1362 | PERROR("close"); | |
1363 | ret = -LTTNG_ERR_INVALID; | |
1364 | goto end; | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | function_location->binary_fd = binary_fd; | |
1369 | end: | |
1370 | return ret; | |
1371 | } | |
1372 | ||
f4d0bb2e FD |
1373 | LTTNG_HIDDEN |
1374 | int lttng_userspace_probe_location_tracepoint_set_binary_fd( | |
1375 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1376 | { | |
1377 | int ret = 0; | |
1378 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1379 | ||
1380 | assert(location); | |
1381 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
1382 | ||
1383 | tracepoint_location = container_of(location, | |
1384 | struct lttng_userspace_probe_location_tracepoint, parent); | |
1385 | if (tracepoint_location->binary_fd >= 0) { | |
1386 | ret = close(tracepoint_location->binary_fd); | |
1387 | if (ret) { | |
1388 | PERROR("close"); | |
1389 | ret = -LTTNG_ERR_INVALID; | |
1390 | goto end; | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | tracepoint_location->binary_fd = binary_fd; | |
1395 | end: | |
1396 | return ret; | |
1397 | } | |
1398 | ||
1ce46cfe JG |
1399 | static |
1400 | int lttng_userspace_probe_location_function_flatten( | |
1401 | const struct lttng_userspace_probe_location *location, | |
1402 | struct lttng_dynamic_buffer *buffer) | |
1403 | { | |
1404 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1405 | struct lttng_userspace_probe_location_function *probe_function; | |
1406 | struct lttng_userspace_probe_location_function flat_probe; | |
1407 | size_t function_name_len, binary_path_len; | |
1408 | size_t padding_needed = 0; | |
1409 | char *flat_probe_start; | |
1410 | int storage_needed = 0; | |
1411 | int ret; | |
1412 | ||
1413 | assert(location); | |
1414 | ||
1415 | if (location->lookup_method && location->lookup_method->type != | |
1416 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1417 | ret = -LTTNG_ERR_INVALID; | |
1418 | goto end; | |
1419 | } | |
1420 | ||
1421 | probe_function = container_of(location, | |
1422 | struct lttng_userspace_probe_location_function, | |
1423 | parent); | |
1424 | assert(probe_function->function_name); | |
1425 | assert(probe_function->binary_path); | |
1426 | ||
1427 | storage_needed += | |
1428 | sizeof(struct lttng_userspace_probe_location_function); | |
1429 | function_name_len = strlen(probe_function->function_name) + 1; | |
1430 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1431 | storage_needed += function_name_len + binary_path_len; | |
1432 | ||
1433 | /* | |
1434 | * The lookup method is aligned to 64-bit within the buffer. | |
1435 | * This is needed even if there is no lookup method since | |
1436 | * the next structure in the buffer probably needs to be | |
1437 | * aligned too (depending on the arch). | |
1438 | */ | |
1439 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1440 | storage_needed += padding_needed; | |
1441 | ||
1442 | if (location->lookup_method) { | |
1443 | /* NOTE: elf look-up method is assumed here. */ | |
1444 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1445 | } | |
1446 | ||
1447 | if (!buffer) { | |
1448 | ret = storage_needed; | |
1449 | goto end; | |
1450 | } | |
1451 | ||
1452 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1453 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1454 | buffer->size + storage_needed); | |
1455 | if (ret) { | |
1456 | goto end; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1461 | ||
1462 | flat_probe_start = buffer->data + buffer->size; | |
1463 | flat_probe.parent.type = location->type; | |
1464 | /* | |
1465 | * The lookup method, if present, is the last element in the flat | |
1466 | * representation of the probe. | |
1467 | */ | |
1468 | if (location->lookup_method) { | |
1469 | flat_probe.parent.lookup_method = | |
1470 | (struct lttng_userspace_probe_location_lookup_method *) | |
1471 | (flat_probe_start + sizeof(flat_probe) + | |
1472 | function_name_len + binary_path_len + padding_needed); | |
1473 | } else { | |
1474 | flat_probe.parent.lookup_method = NULL; | |
1475 | } | |
1476 | ||
1477 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1478 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
1479 | flat_probe.binary_fd = -1; | |
1480 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, | |
1481 | sizeof(flat_probe)); | |
1482 | if (ret) { | |
1483 | goto end; | |
1484 | } | |
1485 | ||
1486 | ret = lttng_dynamic_buffer_append(buffer, | |
1487 | probe_function->function_name, function_name_len); | |
1488 | if (ret) { | |
1489 | goto end; | |
1490 | } | |
1491 | ret = lttng_dynamic_buffer_append(buffer, | |
1492 | probe_function->binary_path, binary_path_len); | |
1493 | if (ret) { | |
1494 | goto end; | |
1495 | } | |
1496 | ||
1497 | /* Insert padding before the lookup method. */ | |
1498 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1499 | buffer->size + padding_needed); | |
1500 | if (ret) { | |
1501 | goto end; | |
1502 | } | |
1503 | ||
1504 | if (!location->lookup_method) { | |
1505 | /* Not an error, the default method is used. */ | |
1506 | ret = storage_needed; | |
1507 | goto end; | |
1508 | } | |
1509 | ||
1510 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1511 | flat_lookup_method.parent.type = | |
1512 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1513 | ret = lttng_dynamic_buffer_append(buffer, | |
1514 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1515 | if (ret) { | |
1516 | goto end; | |
1517 | } | |
1518 | ret = storage_needed; | |
1519 | end: | |
1520 | return ret; | |
1521 | } | |
1522 | ||
f4d0bb2e FD |
1523 | static |
1524 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1525 | const struct lttng_userspace_probe_location *location, | |
1526 | struct lttng_dynamic_buffer *buffer) | |
1527 | { | |
1528 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1529 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1530 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1531 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1532 | size_t padding_needed = 0; | |
1533 | int storage_needed = 0; | |
1534 | char *flat_probe_start; | |
1535 | int ret = 0; | |
1536 | ||
1537 | assert(location); | |
1538 | ||
1539 | /* Only SDT tracepoints are supported at the moment */ | |
1540 | if (location->lookup_method && location->lookup_method->type != | |
1541 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1542 | ret = -LTTNG_ERR_INVALID; | |
1543 | goto end; | |
1544 | } | |
1545 | probe_tracepoint = container_of(location, | |
1546 | struct lttng_userspace_probe_location_tracepoint, | |
1547 | parent); | |
1548 | assert(probe_tracepoint->probe_name); | |
1549 | assert(probe_tracepoint->provider_name); | |
1550 | assert(probe_tracepoint->binary_path); | |
1551 | ||
1552 | /* Compute the storage space needed to flatten the probe location */ | |
1553 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1554 | ||
1555 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1556 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1557 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1558 | ||
1559 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1560 | ||
1561 | /* | |
1562 | * The lookup method is aligned to 64-bit within the buffer. | |
1563 | * This is needed even if there is no lookup method since | |
1564 | * the next structure in the buffer probably needs to be | |
1565 | * aligned too (depending on the arch). | |
1566 | */ | |
1567 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1568 | storage_needed += padding_needed; | |
1569 | ||
1570 | if (location->lookup_method) { | |
1571 | /* NOTE: elf look-up method is assumed here. */ | |
1572 | storage_needed += | |
1573 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1574 | } | |
1575 | ||
1576 | /* | |
1577 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1578 | */ | |
1579 | if (!buffer) { | |
1580 | ret = storage_needed; | |
1581 | goto end; | |
1582 | } | |
1583 | ||
1584 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1585 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1586 | buffer->size + storage_needed); | |
1587 | if (ret) { | |
1588 | goto end; | |
1589 | } | |
1590 | } | |
1591 | ||
1592 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1593 | ||
1594 | flat_probe_start = buffer->data + buffer->size; | |
1595 | flat_probe.parent.type = location->type; | |
1596 | ||
1597 | /* | |
1598 | * The lookup method, if present, is the last element in the flat | |
1599 | * representation of the probe. | |
1600 | */ | |
1601 | if (location->lookup_method) { | |
1602 | flat_probe.parent.lookup_method = | |
1603 | (struct lttng_userspace_probe_location_lookup_method *) | |
1604 | (flat_probe_start + sizeof(flat_probe) + | |
1605 | probe_name_len + provider_name_len + | |
1606 | binary_path_len + padding_needed); | |
1607 | } else { | |
1608 | flat_probe.parent.lookup_method = NULL; | |
1609 | } | |
1610 | ||
1611 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1612 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1613 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
1614 | flat_probe.binary_fd = -1; | |
1615 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); | |
1616 | if (ret) { | |
1617 | goto end; | |
1618 | } | |
1619 | ||
1620 | /* Append all the fields to the buffer */ | |
1621 | ret = lttng_dynamic_buffer_append(buffer, | |
1622 | probe_tracepoint->probe_name, probe_name_len); | |
1623 | if (ret) { | |
1624 | goto end; | |
1625 | } | |
1626 | ret = lttng_dynamic_buffer_append(buffer, | |
1627 | probe_tracepoint->provider_name, provider_name_len); | |
1628 | if (ret) { | |
1629 | goto end; | |
1630 | } | |
1631 | ret = lttng_dynamic_buffer_append(buffer, | |
1632 | probe_tracepoint->binary_path, binary_path_len); | |
1633 | if (ret) { | |
1634 | goto end; | |
1635 | } | |
1636 | ||
1637 | /* Insert padding before the lookup method. */ | |
1638 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1639 | if (ret) { | |
1640 | goto end; | |
1641 | } | |
1642 | ||
1643 | if (!location->lookup_method) { | |
1644 | /* Not an error, the default method is used. */ | |
1645 | ret = storage_needed; | |
1646 | goto end; | |
1647 | } | |
1648 | ||
1649 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1650 | ||
1651 | flat_lookup_method.parent.type = | |
1652 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1653 | ret = lttng_dynamic_buffer_append(buffer, | |
1654 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1655 | if (ret) { | |
1656 | goto end; | |
1657 | } | |
1658 | ret = storage_needed; | |
1659 | end: | |
1660 | return ret; | |
1661 | } | |
1662 | ||
1ce46cfe JG |
1663 | LTTNG_HIDDEN |
1664 | int lttng_userspace_probe_location_flatten( | |
1665 | const struct lttng_userspace_probe_location *location, | |
1666 | struct lttng_dynamic_buffer *buffer) | |
1667 | { | |
1668 | int ret; | |
1669 | if (!location) { | |
1670 | ret = -LTTNG_ERR_INVALID; | |
1671 | goto end; | |
1672 | } | |
1673 | ||
1674 | /* Only types currently supported. */ | |
1675 | switch (location->type) { | |
1676 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1677 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1678 | break; | |
f4d0bb2e FD |
1679 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1680 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1681 | break; | |
1ce46cfe JG |
1682 | default: |
1683 | ret = -LTTNG_ERR_INVALID; | |
1684 | goto end; | |
1685 | } | |
1686 | ||
1687 | end: | |
1688 | return ret; | |
1689 | } | |
394357fe FD |
1690 | |
1691 | LTTNG_HIDDEN | |
1692 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1693 | const struct lttng_userspace_probe_location *location) | |
1694 | { | |
1695 | struct lttng_userspace_probe_location *new_location = NULL; | |
1696 | enum lttng_userspace_probe_location_type type; | |
1697 | ||
1698 | if (!location) { | |
1699 | goto err; | |
1700 | } | |
1701 | ||
1702 | type = lttng_userspace_probe_location_get_type(location); | |
1703 | switch (type) { | |
1704 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1705 | new_location = | |
1706 | lttng_userspace_probe_location_function_copy(location); | |
1707 | if (!new_location) { | |
1708 | goto err; | |
1709 | } | |
1710 | break; | |
f4d0bb2e FD |
1711 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1712 | new_location = | |
1713 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1714 | if (!new_location) { | |
1715 | goto err; | |
1716 | } | |
1717 | break; | |
394357fe FD |
1718 | default: |
1719 | new_location = NULL; | |
1720 | goto err; | |
1721 | } | |
1722 | err: | |
1723 | return new_location; | |
1724 | } |