Commit | Line | Data |
---|---|---|
1ce46cfe | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1ce46cfe | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
1ce46cfe | 5 | * |
1ce46cfe JG |
6 | */ |
7 | ||
8 | #include <assert.h> | |
9 | #include <common/error.h> | |
10 | #include <common/macros.h> | |
11 | #include <common/compat/string.h> | |
12 | #include <fcntl.h> | |
13 | #include <lttng/constant.h> | |
14 | #include <lttng/userspace-probe-internal.h> | |
15 | ||
16 | enum lttng_userspace_probe_location_lookup_method_type | |
17 | lttng_userspace_probe_location_lookup_method_get_type( | |
18 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
19 | { | |
20 | return lookup_method ? lookup_method->type : | |
21 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
22 | } | |
23 | ||
24 | void lttng_userspace_probe_location_lookup_method_destroy( | |
25 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
26 | { | |
27 | if (!lookup_method){ | |
28 | return; | |
29 | } | |
30 | ||
5d21f143 | 31 | free(lookup_method); |
1ce46cfe JG |
32 | } |
33 | ||
34 | struct lttng_userspace_probe_location_lookup_method * | |
35 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
36 | { | |
37 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
38 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
39 | ||
40 | elf_method = zmalloc(sizeof(*elf_method)); | |
41 | if (!elf_method) { | |
42 | PERROR("zmalloc"); | |
43 | goto end; | |
44 | } | |
45 | ||
46 | ret = &elf_method->parent; | |
47 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
48 | end: | |
49 | return ret; | |
50 | } | |
51 | ||
f4d0bb2e FD |
52 | struct lttng_userspace_probe_location_lookup_method * |
53 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
54 | { | |
55 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
56 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
57 | ||
58 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
59 | if (!sdt_method) { | |
60 | PERROR("zmalloc"); | |
61 | goto end; | |
62 | } | |
63 | ||
64 | ret = &sdt_method->parent; | |
65 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
66 | end: | |
67 | return ret; | |
68 | } | |
69 | ||
1ce46cfe JG |
70 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
71 | const struct lttng_userspace_probe_location *location) | |
72 | { | |
73 | return location ? location->type : | |
74 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
75 | } | |
76 | ||
77 | static | |
78 | void lttng_userspace_probe_location_function_destroy( | |
79 | struct lttng_userspace_probe_location *location) | |
80 | { | |
81 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
82 | ||
83 | assert(location); | |
84 | ||
85 | location_function = container_of(location, | |
86 | struct lttng_userspace_probe_location_function, parent); | |
87 | ||
88 | assert(location_function); | |
89 | ||
90 | free(location_function->function_name); | |
91 | free(location_function->binary_path); | |
92 | if (location_function->binary_fd >= 0) { | |
93 | if (close(location_function->binary_fd)) { | |
94 | PERROR("close"); | |
95 | } | |
96 | } | |
97 | free(location); | |
98 | } | |
99 | ||
f4d0bb2e FD |
100 | static |
101 | void lttng_userspace_probe_location_tracepoint_destroy( | |
102 | struct lttng_userspace_probe_location *location) | |
103 | { | |
104 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
105 | ||
106 | assert(location); | |
107 | ||
108 | location_tracepoint = container_of(location, | |
109 | struct lttng_userspace_probe_location_tracepoint, | |
110 | parent); | |
111 | ||
112 | assert(location_tracepoint); | |
113 | ||
114 | free(location_tracepoint->probe_name); | |
115 | free(location_tracepoint->provider_name); | |
116 | free(location_tracepoint->binary_path); | |
117 | if (location_tracepoint->binary_fd >= 0) { | |
118 | if (close(location_tracepoint->binary_fd)) { | |
119 | PERROR("close"); | |
120 | } | |
121 | } | |
122 | free(location); | |
123 | } | |
124 | ||
1ce46cfe JG |
125 | void lttng_userspace_probe_location_destroy( |
126 | struct lttng_userspace_probe_location *location) | |
127 | { | |
128 | if (!location) { | |
129 | return; | |
130 | } | |
131 | ||
132 | lttng_userspace_probe_location_lookup_method_destroy( | |
133 | location->lookup_method); | |
134 | ||
135 | switch (location->type) { | |
136 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
137 | lttng_userspace_probe_location_function_destroy(location); | |
138 | break; | |
f4d0bb2e FD |
139 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
140 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
141 | break; | |
1ce46cfe | 142 | default: |
adf53c67 | 143 | abort(); |
1ce46cfe JG |
144 | } |
145 | } | |
146 | ||
147 | static struct lttng_userspace_probe_location * | |
148 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
149 | const char *function_name, | |
150 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
151 | bool open_binary) | |
152 | { | |
153 | int binary_fd = -1; | |
154 | char *function_name_copy = NULL, *binary_path_copy = NULL; | |
155 | struct lttng_userspace_probe_location *ret = NULL; | |
156 | struct lttng_userspace_probe_location_function *location; | |
157 | ||
158 | if (open_binary) { | |
159 | binary_fd = open(binary_path, O_RDONLY); | |
160 | if (binary_fd < 0) { | |
161 | PERROR("Error opening the binary"); | |
162 | goto error; | |
163 | } | |
164 | } else { | |
165 | binary_fd = -1; | |
166 | } | |
167 | ||
168 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
169 | if (!function_name_copy) { | |
170 | PERROR("Error duplicating the function name"); | |
171 | goto error; | |
172 | } | |
173 | ||
174 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
175 | if (!binary_path_copy) { | |
176 | PERROR("Error duplicating the function name"); | |
177 | goto error; | |
178 | } | |
179 | ||
180 | location = zmalloc(sizeof(*location)); | |
181 | if (!location) { | |
182 | PERROR("Error allocating userspace probe location"); | |
183 | goto error; | |
184 | } | |
185 | ||
186 | location->function_name = function_name_copy; | |
187 | location->binary_path = binary_path_copy; | |
188 | location->binary_fd = binary_fd; | |
9d3981b5 JG |
189 | location->instrumentation_type = |
190 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
191 | |
192 | ret = &location->parent; | |
193 | ret->lookup_method = lookup_method; | |
194 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
195 | goto end; | |
196 | ||
197 | error: | |
198 | free(function_name_copy); | |
199 | free(binary_path_copy); | |
200 | if (binary_fd >= 0) { | |
201 | if (close(binary_fd)) { | |
202 | PERROR("Error closing binary fd in error path"); | |
203 | } | |
204 | } | |
205 | end: | |
206 | return ret; | |
207 | } | |
208 | ||
f4d0bb2e FD |
209 | static struct lttng_userspace_probe_location * |
210 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
211 | const char *provider_name, const char *probe_name, | |
212 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
213 | bool open_binary) | |
214 | { | |
215 | int binary_fd = -1; | |
216 | char *probe_name_copy = NULL; | |
217 | char *provider_name_copy = NULL; | |
218 | char *binary_path_copy = NULL; | |
219 | struct lttng_userspace_probe_location *ret = NULL; | |
220 | struct lttng_userspace_probe_location_tracepoint *location; | |
221 | ||
222 | if (open_binary) { | |
223 | binary_fd = open(binary_path, O_RDONLY); | |
224 | if (binary_fd < 0) { | |
225 | PERROR("open"); | |
226 | goto error; | |
227 | } | |
228 | } else { | |
229 | binary_fd = -1; | |
230 | } | |
231 | ||
232 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
233 | if (!probe_name_copy) { | |
234 | PERROR("lttng_strndup"); | |
235 | goto error; | |
236 | } | |
237 | ||
238 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
239 | if (!provider_name_copy) { | |
240 | PERROR("lttng_strndup"); | |
241 | goto error; | |
242 | } | |
243 | ||
244 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
245 | if (!binary_path_copy) { | |
246 | PERROR("lttng_strndup"); | |
247 | goto error; | |
248 | } | |
249 | ||
250 | location = zmalloc(sizeof(*location)); | |
251 | if (!location) { | |
252 | PERROR("zmalloc"); | |
253 | goto error; | |
254 | } | |
255 | ||
256 | location->probe_name = probe_name_copy; | |
257 | location->provider_name = provider_name_copy; | |
258 | location->binary_path = binary_path_copy; | |
259 | location->binary_fd = binary_fd; | |
260 | ||
261 | ret = &location->parent; | |
262 | ret->lookup_method = lookup_method; | |
263 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
264 | goto end; | |
265 | ||
266 | error: | |
267 | free(probe_name_copy); | |
268 | free(provider_name_copy); | |
7c86453b | 269 | free(binary_path_copy); |
f4d0bb2e FD |
270 | if (binary_fd >= 0) { |
271 | if (close(binary_fd)) { | |
272 | PERROR("Error closing binary fd in error path"); | |
273 | } | |
274 | } | |
275 | end: | |
276 | return ret; | |
277 | } | |
278 | ||
1ce46cfe JG |
279 | struct lttng_userspace_probe_location * |
280 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
281 | const char *function_name, | |
282 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
283 | { | |
284 | struct lttng_userspace_probe_location *ret = NULL; | |
285 | ||
286 | if (!binary_path || !function_name) { | |
287 | ERR("Invalid argument(s)"); | |
288 | goto end; | |
289 | } | |
290 | ||
291 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
292 | lookup_method)) { | |
293 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
294 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
295 | break; | |
296 | default: | |
297 | /* Invalid probe location lookup method. */ | |
298 | goto end; | |
299 | } | |
300 | ||
301 | ret = lttng_userspace_probe_location_function_create_no_check( | |
302 | binary_path, function_name, lookup_method, true); | |
303 | end: | |
304 | return ret; | |
305 | } | |
306 | ||
f4d0bb2e FD |
307 | struct lttng_userspace_probe_location * |
308 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
309 | const char *provider_name, const char *probe_name, | |
310 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
311 | { | |
312 | struct lttng_userspace_probe_location *ret = NULL; | |
313 | ||
314 | if (!binary_path || !probe_name || !provider_name) { | |
315 | ERR("Invalid argument(s)"); | |
316 | goto end; | |
317 | } | |
318 | ||
319 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
320 | lookup_method)) { | |
321 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
322 | break; | |
323 | default: | |
324 | /* Invalid probe location lookup method. */ | |
325 | goto end; | |
326 | } | |
327 | ||
328 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
329 | binary_path, provider_name, probe_name, lookup_method, true); | |
330 | end: | |
331 | return ret; | |
332 | } | |
333 | ||
394357fe FD |
334 | static struct lttng_userspace_probe_location_lookup_method * |
335 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
336 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
337 | { | |
338 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
339 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
340 | ||
341 | assert(lookup_method); | |
342 | assert(lookup_method->type == | |
343 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); | |
344 | ||
345 | elf_method = zmalloc(sizeof(*elf_method)); | |
346 | if (!elf_method) { | |
347 | PERROR("Error allocating ELF userspace probe lookup method"); | |
348 | goto error; | |
349 | } | |
350 | ||
351 | elf_method->parent.type = lookup_method->type; | |
352 | parent = &elf_method->parent; | |
353 | ||
354 | goto end; | |
355 | error: | |
356 | parent = NULL; | |
357 | end: | |
358 | return parent; | |
359 | } | |
360 | ||
f4d0bb2e FD |
361 | static struct lttng_userspace_probe_location_lookup_method * |
362 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
363 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
364 | { | |
365 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
366 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
367 | ||
368 | assert(lookup_method); | |
369 | assert(lookup_method->type == | |
370 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); | |
371 | ||
372 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
373 | if (!sdt_method) { | |
374 | PERROR("zmalloc"); | |
375 | goto error; | |
376 | } | |
377 | ||
378 | sdt_method->parent.type = lookup_method->type; | |
379 | parent = &sdt_method->parent; | |
380 | ||
381 | goto end; | |
382 | ||
383 | error: | |
384 | parent = NULL; | |
385 | end: | |
386 | return parent; | |
387 | } | |
388 | ||
394357fe FD |
389 | static struct lttng_userspace_probe_location * |
390 | lttng_userspace_probe_location_function_copy( | |
391 | const struct lttng_userspace_probe_location *location) | |
392 | { | |
393 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
394 | struct lttng_userspace_probe_location *new_location = NULL; | |
395 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
396 | const char *binary_path = NULL; |
397 | const char *function_name = NULL; | |
d7ee7196 | 398 | int fd, new_fd; |
394357fe FD |
399 | |
400 | assert(location); | |
401 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
402 | ||
cc831309 FD |
403 | /* Get probe location fields */ |
404 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 405 | if (!binary_path) { |
cc831309 | 406 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
407 | goto error; |
408 | } | |
409 | ||
cc831309 | 410 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 411 | if (!function_name) { |
cc831309 | 412 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
413 | goto error; |
414 | } | |
415 | ||
416 | /* Duplicate the binary fd */ | |
d7ee7196 | 417 | fd = lttng_userspace_probe_location_function_get_binary_fd(location); |
394357fe | 418 | if (fd == -1) { |
d7ee7196 FD |
419 | ERR("Error getting file descriptor to binary"); |
420 | goto error; | |
421 | } | |
422 | ||
423 | new_fd = dup(fd); | |
424 | if (new_fd == -1) { | |
394357fe FD |
425 | PERROR("Error duplicating file descriptor to binary"); |
426 | goto error; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Duplicate probe location method fields | |
431 | */ | |
432 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
433 | location->lookup_method); | |
434 | switch (lookup_type) { | |
435 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
436 | lookup_method = | |
437 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
438 | location->lookup_method); | |
439 | if (!lookup_method) { | |
440 | goto close_fd; | |
441 | } | |
442 | break; | |
443 | default: | |
444 | /* Invalid probe location lookup method. */ | |
445 | goto close_fd; | |
446 | } | |
447 | ||
448 | /* Create the probe_location */ | |
449 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 450 | binary_path, function_name, lookup_method, false); |
394357fe FD |
451 | if (!new_location) { |
452 | goto destroy_lookup_method; | |
453 | } | |
454 | ||
455 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 456 | if (lttng_userspace_probe_location_function_set_binary_fd(new_location, new_fd) < 0) { |
394357fe FD |
457 | goto destroy_probe_location; |
458 | } | |
459 | ||
460 | goto end; | |
461 | ||
462 | destroy_probe_location: | |
463 | lttng_userspace_probe_location_destroy(new_location); | |
464 | destroy_lookup_method: | |
465 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
466 | close_fd: | |
d7ee7196 | 467 | if (close(new_fd) < 0) { |
394357fe FD |
468 | PERROR("Error closing duplicated file descriptor in error path"); |
469 | } | |
470 | error: | |
394357fe FD |
471 | new_location = NULL; |
472 | end: | |
473 | return new_location; | |
474 | } | |
475 | ||
f4d0bb2e FD |
476 | static struct lttng_userspace_probe_location * |
477 | lttng_userspace_probe_location_tracepoint_copy( | |
478 | const struct lttng_userspace_probe_location *location) | |
479 | { | |
480 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
481 | struct lttng_userspace_probe_location *new_location = NULL; | |
482 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
483 | const char *binary_path = NULL; |
484 | const char *probe_name = NULL; | |
485 | const char *provider_name = NULL; | |
d7ee7196 | 486 | int fd, new_fd; |
f4d0bb2e FD |
487 | |
488 | assert(location); | |
489 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
490 | ||
cc831309 FD |
491 | /* Get probe location fields */ |
492 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); | |
f4d0bb2e | 493 | if (!binary_path) { |
cc831309 | 494 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
495 | goto error; |
496 | } | |
497 | ||
cc831309 | 498 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 499 | if (!probe_name) { |
cc831309 | 500 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
501 | goto error; |
502 | } | |
503 | ||
cc831309 | 504 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 505 | if (!provider_name) { |
cc831309 | 506 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
507 | goto error; |
508 | } | |
509 | ||
510 | /* Duplicate the binary fd */ | |
d7ee7196 | 511 | fd = lttng_userspace_probe_location_tracepoint_get_binary_fd(location); |
f4d0bb2e | 512 | if (fd == -1) { |
d7ee7196 FD |
513 | ERR("Error getting file descriptor to binary"); |
514 | goto error; | |
515 | } | |
516 | ||
517 | new_fd = dup(fd); | |
518 | if (new_fd == -1) { | |
cc831309 | 519 | PERROR("Error duplicating file descriptor to binary"); |
f4d0bb2e FD |
520 | goto error; |
521 | } | |
522 | ||
523 | /* | |
524 | * Duplicate probe location method fields | |
525 | */ | |
526 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
527 | location->lookup_method); | |
528 | switch (lookup_type) { | |
529 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
530 | lookup_method = | |
531 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
532 | location->lookup_method); | |
533 | if (!lookup_method) { | |
534 | goto close_fd; | |
535 | } | |
536 | break; | |
537 | default: | |
538 | /* Invalid probe location lookup method. */ | |
539 | goto close_fd; | |
540 | } | |
541 | ||
542 | /* Create the probe_location */ | |
543 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 544 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
545 | if (!new_location) { |
546 | goto destroy_lookup_method; | |
547 | } | |
548 | ||
549 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 550 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd(new_location, new_fd) < 0) { |
f4d0bb2e FD |
551 | goto destroy_probe_location; |
552 | } | |
553 | ||
554 | goto end; | |
555 | ||
556 | destroy_probe_location: | |
557 | lttng_userspace_probe_location_destroy(new_location); | |
558 | destroy_lookup_method: | |
559 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
560 | close_fd: | |
d7ee7196 | 561 | if (close(new_fd) < 0) { |
cc831309 | 562 | PERROR("Error closing duplicated file descriptor in error path"); |
f4d0bb2e FD |
563 | } |
564 | error: | |
f4d0bb2e FD |
565 | new_location = NULL; |
566 | end: | |
567 | return new_location; | |
568 | } | |
569 | ||
1ce46cfe JG |
570 | const char *lttng_userspace_probe_location_function_get_binary_path( |
571 | const struct lttng_userspace_probe_location *location) | |
572 | { | |
573 | const char *ret = NULL; | |
574 | struct lttng_userspace_probe_location_function *function_location; | |
575 | ||
576 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
577 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
578 | ERR("Invalid argument(s)"); | |
579 | goto end; | |
580 | } | |
581 | ||
582 | function_location = container_of(location, | |
583 | struct lttng_userspace_probe_location_function, | |
584 | parent); | |
585 | ret = function_location->binary_path; | |
586 | end: | |
587 | return ret; | |
588 | } | |
589 | ||
f4d0bb2e FD |
590 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
591 | const struct lttng_userspace_probe_location *location) | |
592 | { | |
593 | const char *ret = NULL; | |
594 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
595 | ||
596 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
597 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
598 | ERR("Invalid argument(s)"); | |
599 | goto end; | |
600 | } | |
601 | ||
602 | tracepoint_location = container_of(location, | |
603 | struct lttng_userspace_probe_location_tracepoint, | |
604 | parent); | |
605 | ret = tracepoint_location->binary_path; | |
606 | end: | |
607 | return ret; | |
608 | } | |
609 | ||
1ce46cfe JG |
610 | const char *lttng_userspace_probe_location_function_get_function_name( |
611 | const struct lttng_userspace_probe_location *location) | |
612 | { | |
613 | const char *ret = NULL; | |
614 | struct lttng_userspace_probe_location_function *function_location; | |
615 | ||
616 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
617 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
618 | ERR("Invalid argument(s)"); | |
619 | goto end; | |
620 | } | |
621 | ||
622 | function_location = container_of(location, | |
623 | struct lttng_userspace_probe_location_function, parent); | |
624 | ret = function_location->function_name; | |
625 | end: | |
626 | return ret; | |
627 | } | |
628 | ||
f4d0bb2e FD |
629 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
630 | const struct lttng_userspace_probe_location *location) | |
631 | { | |
632 | const char *ret = NULL; | |
633 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
634 | ||
635 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
636 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
637 | ERR("Invalid argument(s)"); | |
638 | goto end; | |
639 | } | |
640 | ||
641 | tracepoint_location = container_of(location, | |
642 | struct lttng_userspace_probe_location_tracepoint, parent); | |
643 | ret = tracepoint_location->probe_name; | |
644 | end: | |
645 | return ret; | |
646 | } | |
647 | ||
648 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
649 | const struct lttng_userspace_probe_location *location) | |
650 | { | |
651 | const char *ret = NULL; | |
652 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
653 | ||
654 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
655 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
656 | ERR("Invalid argument(s)"); | |
657 | goto end; | |
658 | } | |
659 | ||
660 | tracepoint_location = container_of(location, | |
661 | struct lttng_userspace_probe_location_tracepoint, parent); | |
662 | ret = tracepoint_location->provider_name; | |
663 | end: | |
664 | return ret; | |
665 | } | |
666 | ||
1ce46cfe JG |
667 | int lttng_userspace_probe_location_function_get_binary_fd( |
668 | const struct lttng_userspace_probe_location *location) | |
669 | { | |
670 | int ret = -1; | |
671 | struct lttng_userspace_probe_location_function *function_location; | |
672 | ||
673 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
674 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
675 | ERR("Invalid argument(s)"); | |
676 | goto end; | |
677 | } | |
678 | ||
679 | function_location = container_of(location, | |
680 | struct lttng_userspace_probe_location_function, parent); | |
681 | ret = function_location->binary_fd; | |
682 | end: | |
683 | return ret; | |
684 | } | |
685 | ||
9d3981b5 JG |
686 | enum lttng_userspace_probe_location_function_instrumentation_type |
687 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
688 | const struct lttng_userspace_probe_location *location) | |
689 | { | |
690 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
691 | struct lttng_userspace_probe_location_function *function_location; | |
692 | ||
693 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
694 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
695 | ERR("Invalid argument(s)"); | |
696 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; | |
697 | goto end; | |
698 | } | |
699 | ||
700 | function_location = container_of(location, | |
701 | struct lttng_userspace_probe_location_function, parent); | |
702 | type = function_location->instrumentation_type; | |
703 | end: | |
704 | return type; | |
705 | } | |
706 | ||
707 | enum lttng_userspace_probe_location_status | |
708 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
709 | const struct lttng_userspace_probe_location *location, | |
710 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
711 | { | |
712 | enum lttng_userspace_probe_location_status status = | |
713 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
714 | struct lttng_userspace_probe_location_function *function_location; | |
715 | ||
716 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
717 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
718 | instrumentation_type != | |
719 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
720 | ERR("Invalid argument(s)"); | |
721 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; | |
722 | goto end; | |
723 | } | |
724 | ||
725 | function_location = container_of(location, | |
726 | struct lttng_userspace_probe_location_function, parent); | |
727 | function_location->instrumentation_type = instrumentation_type; | |
728 | end: | |
729 | return status; | |
730 | } | |
731 | ||
f4d0bb2e FD |
732 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
733 | const struct lttng_userspace_probe_location *location) | |
734 | { | |
735 | int ret = -1; | |
736 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
737 | ||
738 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
739 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
740 | ERR("Invalid argument(s)"); | |
741 | goto end; | |
742 | } | |
743 | ||
744 | tracepoint_location = container_of(location, | |
745 | struct lttng_userspace_probe_location_tracepoint, parent); | |
746 | ret = tracepoint_location->binary_fd; | |
747 | end: | |
748 | return ret; | |
749 | } | |
750 | ||
1ce46cfe JG |
751 | static struct lttng_userspace_probe_location_lookup_method * |
752 | lttng_userspace_probe_location_function_get_lookup_method( | |
753 | const struct lttng_userspace_probe_location *location) | |
754 | { | |
755 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
756 | ||
757 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
758 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
759 | ERR("Invalid argument(s)"); | |
760 | goto end; | |
761 | } | |
762 | ||
763 | ret = location->lookup_method; | |
764 | end: | |
765 | return ret; | |
766 | } | |
767 | ||
f4d0bb2e FD |
768 | static struct lttng_userspace_probe_location_lookup_method * |
769 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
770 | const struct lttng_userspace_probe_location *location) | |
771 | { | |
772 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
773 | ||
774 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
775 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
776 | ERR("Invalid argument(s)"); | |
777 | goto end; | |
778 | } | |
779 | ||
780 | ret = location->lookup_method; | |
781 | end: | |
782 | return ret; | |
783 | } | |
784 | ||
87597c2c | 785 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
786 | lttng_userspace_probe_location_get_lookup_method( |
787 | const struct lttng_userspace_probe_location *location) | |
788 | { | |
789 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
790 | ||
791 | assert(location); | |
792 | switch (location->type) { | |
793 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
794 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
795 | location); | |
796 | break; | |
f4d0bb2e FD |
797 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
798 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
799 | location); | |
800 | break; | |
1ce46cfe JG |
801 | default: |
802 | ERR("Unknowned lookup method."); | |
803 | break; | |
804 | } | |
805 | return ret; | |
806 | } | |
807 | ||
808 | static | |
809 | int lttng_userspace_probe_location_lookup_method_serialize( | |
810 | struct lttng_userspace_probe_location_lookup_method *method, | |
811 | struct lttng_dynamic_buffer *buffer) | |
812 | { | |
813 | int ret; | |
814 | struct lttng_userspace_probe_location_lookup_method_comm | |
815 | lookup_method_comm; | |
816 | ||
817 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
818 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
819 | if (buffer) { | |
820 | ret = lttng_dynamic_buffer_append(buffer, &lookup_method_comm, | |
821 | sizeof(lookup_method_comm)); | |
822 | if (ret) { | |
823 | goto end; | |
824 | } | |
825 | } | |
f4d0bb2e FD |
826 | ret = sizeof(lookup_method_comm); |
827 | end: | |
828 | return ret; | |
829 | } | |
830 | ||
831 | static | |
832 | int lttng_userspace_probe_location_function_serialize( | |
833 | const struct lttng_userspace_probe_location *location, | |
834 | struct lttng_dynamic_buffer *buffer, | |
835 | int *binary_fd) | |
836 | { | |
837 | int ret; | |
838 | size_t function_name_len, binary_path_len; | |
839 | struct lttng_userspace_probe_location_function *location_function; | |
840 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
841 | ||
842 | assert(location); | |
843 | assert(lttng_userspace_probe_location_get_type(location) == | |
844 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
845 | ||
846 | location_function = container_of(location, | |
847 | struct lttng_userspace_probe_location_function, | |
848 | parent); | |
849 | if (!location_function->function_name || !location_function->binary_path) { | |
850 | ret = -LTTNG_ERR_INVALID; | |
851 | goto end; | |
852 | } | |
853 | ||
854 | if (binary_fd && location_function->binary_fd < 0) { | |
855 | ret = -LTTNG_ERR_INVALID; | |
856 | goto end; | |
857 | } | |
858 | ||
859 | if (binary_fd) { | |
860 | *binary_fd = location_function->binary_fd; | |
861 | } | |
862 | ||
863 | function_name_len = strlen(location_function->function_name); | |
864 | if (function_name_len == 0) { | |
865 | ret = -LTTNG_ERR_INVALID; | |
866 | goto end; | |
867 | } | |
868 | binary_path_len = strlen(location_function->binary_path); | |
869 | if (binary_path_len == 0) { | |
870 | ret = -LTTNG_ERR_INVALID; | |
871 | goto end; | |
872 | } | |
873 | ||
874 | location_function_comm.function_name_len = function_name_len + 1; | |
875 | location_function_comm.binary_path_len = binary_path_len + 1; | |
876 | ||
877 | if (buffer) { | |
878 | ret = lttng_dynamic_buffer_append(buffer, | |
879 | &location_function_comm, | |
880 | sizeof(location_function_comm)); | |
881 | if (ret) { | |
882 | ret = -LTTNG_ERR_INVALID; | |
883 | goto end; | |
884 | } | |
885 | ret = lttng_dynamic_buffer_append(buffer, | |
886 | location_function->function_name, | |
887 | location_function_comm.function_name_len); | |
888 | if (ret) { | |
889 | ret = -LTTNG_ERR_INVALID; | |
890 | goto end; | |
891 | } | |
892 | ret = lttng_dynamic_buffer_append(buffer, | |
893 | location_function->binary_path, | |
894 | location_function_comm.binary_path_len); | |
895 | if (ret) { | |
896 | ret = -LTTNG_ERR_INVALID; | |
897 | goto end; | |
898 | } | |
899 | } | |
900 | ret = sizeof(location_function_comm) + | |
901 | location_function_comm.function_name_len + | |
902 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
903 | end: |
904 | return ret; | |
905 | } | |
906 | ||
907 | static | |
f4d0bb2e | 908 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe JG |
909 | const struct lttng_userspace_probe_location *location, |
910 | struct lttng_dynamic_buffer *buffer, | |
911 | int *binary_fd) | |
912 | { | |
913 | int ret; | |
f4d0bb2e FD |
914 | size_t probe_name_len, provider_name_len, binary_path_len; |
915 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
916 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe JG |
917 | |
918 | assert(location); | |
919 | assert(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 920 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 921 | |
f4d0bb2e FD |
922 | location_tracepoint = container_of(location, |
923 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 924 | parent); |
f4d0bb2e FD |
925 | if (!location_tracepoint->probe_name || |
926 | !location_tracepoint->provider_name || | |
927 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
928 | ret = -LTTNG_ERR_INVALID; |
929 | goto end; | |
930 | } | |
931 | ||
f4d0bb2e | 932 | if (binary_fd && location_tracepoint->binary_fd < 0) { |
1ce46cfe JG |
933 | ret = -LTTNG_ERR_INVALID; |
934 | goto end; | |
935 | } | |
936 | ||
937 | if (binary_fd) { | |
f4d0bb2e | 938 | *binary_fd = location_tracepoint->binary_fd; |
1ce46cfe JG |
939 | } |
940 | ||
f4d0bb2e FD |
941 | probe_name_len = strlen(location_tracepoint->probe_name); |
942 | if (probe_name_len == 0) { | |
1ce46cfe JG |
943 | ret = -LTTNG_ERR_INVALID; |
944 | goto end; | |
945 | } | |
f4d0bb2e FD |
946 | |
947 | provider_name_len = strlen(location_tracepoint->provider_name); | |
948 | if (provider_name_len == 0) { | |
949 | ret = -LTTNG_ERR_INVALID; | |
950 | goto end; | |
951 | } | |
952 | ||
953 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
954 | if (binary_path_len == 0) { |
955 | ret = -LTTNG_ERR_INVALID; | |
956 | goto end; | |
957 | } | |
958 | ||
f4d0bb2e FD |
959 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
960 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
961 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe JG |
962 | |
963 | if (buffer) { | |
964 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
965 | &location_tracepoint_comm, |
966 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
967 | if (ret) { |
968 | ret = -LTTNG_ERR_INVALID; | |
969 | goto end; | |
970 | } | |
971 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
972 | location_tracepoint->probe_name, |
973 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
974 | if (ret) { |
975 | ret = -LTTNG_ERR_INVALID; | |
976 | goto end; | |
977 | } | |
978 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
979 | location_tracepoint->provider_name, |
980 | location_tracepoint_comm.provider_name_len); | |
981 | if (ret) { | |
982 | ret = -LTTNG_ERR_INVALID; | |
983 | goto end; | |
984 | } | |
985 | ret = lttng_dynamic_buffer_append(buffer, | |
986 | location_tracepoint->binary_path, | |
987 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
988 | if (ret) { |
989 | ret = -LTTNG_ERR_INVALID; | |
990 | goto end; | |
991 | } | |
992 | } | |
f4d0bb2e FD |
993 | ret = sizeof(location_tracepoint_comm) + |
994 | location_tracepoint_comm.probe_name_len + | |
995 | location_tracepoint_comm.provider_name_len + | |
996 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
997 | end: |
998 | return ret; | |
999 | } | |
1000 | ||
1001 | LTTNG_HIDDEN | |
1002 | int lttng_userspace_probe_location_serialize( | |
1003 | const struct lttng_userspace_probe_location *location, | |
1004 | struct lttng_dynamic_buffer *buffer, | |
1005 | int *binary_fd) | |
1006 | { | |
1007 | int ret, buffer_use = 0; | |
1008 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1009 | ||
1010 | if (!location) { | |
1011 | ERR("Invalid argument(s)"); | |
1012 | ret = -LTTNG_ERR_INVALID; | |
1013 | goto end; | |
1014 | } | |
1015 | ||
56f0bc67 JG |
1016 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1017 | ||
1ce46cfe JG |
1018 | location_generic_comm.type = (int8_t) location->type; |
1019 | if (buffer) { | |
1020 | ret = lttng_dynamic_buffer_append(buffer, &location_generic_comm, | |
1021 | sizeof(location_generic_comm)); | |
1022 | if (ret) { | |
1023 | goto end; | |
1024 | } | |
1025 | } | |
1026 | buffer_use += sizeof(location_generic_comm); | |
1027 | ||
1028 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1029 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1030 | ret = lttng_userspace_probe_location_function_serialize( | |
1031 | location, buffer, binary_fd); | |
1032 | break; | |
f4d0bb2e FD |
1033 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1034 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
1035 | location, buffer, binary_fd); | |
1036 | break; | |
1ce46cfe JG |
1037 | default: |
1038 | ERR("Unsupported probe location type"); | |
1039 | ret = -LTTNG_ERR_INVALID; | |
1040 | goto end; | |
1041 | } | |
1042 | if (ret < 0) { | |
1043 | goto end; | |
1044 | } | |
1045 | buffer_use += ret; | |
1046 | ||
1047 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
1048 | location->lookup_method, buffer); | |
1049 | if (ret < 0) { | |
1050 | goto end; | |
1051 | } | |
1052 | ret += buffer_use; | |
1053 | end: | |
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | static | |
1058 | int lttng_userspace_probe_location_function_create_from_buffer( | |
1059 | const struct lttng_buffer_view *buffer, | |
1060 | struct lttng_userspace_probe_location **location) | |
1061 | { | |
1062 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1063 | const char *function_name_src, *binary_path_src; | |
1064 | char *function_name = NULL, *binary_path = NULL; | |
1065 | int ret = 0; | |
1066 | ||
1067 | assert(buffer); | |
1068 | assert(buffer->data); | |
1069 | assert(location); | |
1070 | ||
1071 | location_function_comm = | |
1072 | (struct lttng_userspace_probe_location_function_comm *) buffer->data; | |
1073 | ||
1074 | const size_t expected_size = sizeof(*location_function_comm) + | |
1075 | location_function_comm->function_name_len + | |
1076 | location_function_comm->binary_path_len; | |
1077 | ||
1078 | if (buffer->size < expected_size) { | |
1079 | ret = -LTTNG_ERR_INVALID; | |
1080 | goto end; | |
1081 | } | |
1082 | ||
1083 | function_name_src = buffer->data + sizeof(*location_function_comm); | |
1084 | binary_path_src = function_name_src + | |
1085 | location_function_comm->function_name_len; | |
1086 | ||
1087 | if (function_name_src[location_function_comm->function_name_len - 1] != '\0') { | |
1088 | ret = -LTTNG_ERR_INVALID; | |
1089 | goto end; | |
1090 | } | |
1091 | if (binary_path_src[location_function_comm->binary_path_len - 1] != '\0') { | |
1092 | ret = -LTTNG_ERR_INVALID; | |
1093 | goto end; | |
1094 | } | |
1095 | ||
1096 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1097 | if (!function_name) { | |
1098 | PERROR("lttng_strndup"); | |
1099 | goto end; | |
1100 | } | |
1101 | ||
1102 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1103 | if (!binary_path) { | |
1104 | PERROR("lttng_strndup"); | |
1105 | goto end; | |
1106 | } | |
1107 | ||
1108 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1109 | binary_path, function_name, NULL, false); | |
1110 | if (!(*location)) { | |
1111 | ret = -LTTNG_ERR_INVALID; | |
1112 | goto end; | |
1113 | } | |
1114 | ||
1115 | ret = (int) expected_size; | |
1116 | end: | |
1117 | free(function_name); | |
1118 | free(binary_path); | |
1119 | return ret; | |
1120 | } | |
1121 | ||
f4d0bb2e FD |
1122 | static |
1123 | int lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1124 | const struct lttng_buffer_view *buffer, | |
1125 | struct lttng_userspace_probe_location **location) | |
1126 | { | |
1127 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1128 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1129 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1130 | int ret = 0; | |
1131 | ||
1132 | assert(buffer); | |
1133 | assert(buffer->data); | |
1134 | assert(location); | |
1135 | ||
1136 | location_tracepoint_comm = | |
1137 | (struct lttng_userspace_probe_location_tracepoint_comm *) buffer->data; | |
1138 | ||
1139 | const size_t expected_size = sizeof(*location_tracepoint_comm) + | |
1140 | location_tracepoint_comm->probe_name_len + | |
1141 | location_tracepoint_comm->provider_name_len + | |
1142 | location_tracepoint_comm->binary_path_len; | |
1143 | ||
1144 | if (buffer->size < expected_size) { | |
1145 | ret = -LTTNG_ERR_INVALID; | |
1146 | goto end; | |
1147 | } | |
1148 | ||
1149 | probe_name_src = buffer->data + sizeof(*location_tracepoint_comm); | |
1150 | provider_name_src = probe_name_src + | |
1151 | location_tracepoint_comm->probe_name_len; | |
1152 | binary_path_src = provider_name_src + | |
1153 | location_tracepoint_comm->provider_name_len; | |
1154 | ||
1155 | if (probe_name_src[location_tracepoint_comm->probe_name_len - 1] != '\0') { | |
1156 | ret = -LTTNG_ERR_INVALID; | |
1157 | goto end; | |
1158 | } | |
1159 | ||
1160 | if (provider_name_src[location_tracepoint_comm->provider_name_len - 1] != '\0') { | |
1161 | ret = -LTTNG_ERR_INVALID; | |
1162 | goto end; | |
1163 | } | |
1164 | ||
1165 | if (binary_path_src[location_tracepoint_comm->binary_path_len - 1] != '\0') { | |
1166 | ret = -LTTNG_ERR_INVALID; | |
1167 | goto end; | |
1168 | } | |
1169 | ||
1170 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1171 | if (!probe_name) { | |
1172 | PERROR("lttng_strndup"); | |
1173 | goto end; | |
1174 | } | |
1175 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1176 | if (!provider_name) { | |
1177 | PERROR("lttng_strndup"); | |
1178 | goto end; | |
1179 | } | |
1180 | ||
1181 | binary_path = lttng_strndup(binary_path_src, LTTNG_SYMBOL_NAME_LEN); | |
1182 | if (!binary_path) { | |
1183 | PERROR("lttng_strndup"); | |
1184 | goto end; | |
1185 | } | |
1186 | ||
1187 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1188 | binary_path, provider_name, probe_name, NULL, false); | |
1189 | if (!(*location)) { | |
1190 | ret = -LTTNG_ERR_INVALID; | |
1191 | goto end; | |
1192 | } | |
1193 | ||
1194 | ret = (int) expected_size; | |
1195 | end: | |
1196 | free(probe_name); | |
1197 | free(provider_name); | |
1198 | free(binary_path); | |
1199 | return ret; | |
1200 | } | |
1201 | ||
1ce46cfe JG |
1202 | static |
1203 | int lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1204 | struct lttng_buffer_view *buffer, | |
1205 | struct lttng_userspace_probe_location_lookup_method **lookup_method) | |
1206 | { | |
1207 | int ret; | |
1208 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1209 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1210 | ||
1211 | assert(buffer); | |
1212 | assert(buffer->data); | |
1213 | assert(lookup_method); | |
1214 | ||
1215 | if (buffer->size < sizeof(*lookup_comm)) { | |
1216 | ret = -LTTNG_ERR_INVALID; | |
1217 | goto end; | |
1218 | } | |
1219 | ||
1220 | lookup_comm = (struct lttng_userspace_probe_location_lookup_method_comm *) | |
1221 | buffer->data; | |
1222 | type = (enum lttng_userspace_probe_location_lookup_method_type) | |
1223 | lookup_comm->type; | |
1224 | switch (type) { | |
1225 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1226 | *lookup_method = NULL; | |
1227 | break; | |
1228 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1229 | *lookup_method = | |
1230 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1231 | if (!(*lookup_method)) { | |
1232 | ret = -LTTNG_ERR_INVALID; | |
1233 | goto end; | |
1234 | } | |
1235 | break; | |
f4d0bb2e FD |
1236 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1237 | *lookup_method = | |
1238 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1239 | if (!(*lookup_method)) { | |
1240 | ret = -LTTNG_ERR_INVALID; | |
1241 | goto end; | |
1242 | } | |
1243 | break; | |
1ce46cfe JG |
1244 | default: |
1245 | ret = -LTTNG_ERR_INVALID; | |
1246 | goto end; | |
1247 | } | |
1248 | ||
1249 | ret = sizeof(*lookup_comm); | |
1250 | end: | |
1251 | return ret; | |
1252 | } | |
1253 | ||
1254 | LTTNG_HIDDEN | |
1255 | int lttng_userspace_probe_location_create_from_buffer( | |
1256 | const struct lttng_buffer_view *buffer, | |
1257 | struct lttng_userspace_probe_location **location) | |
1258 | { | |
1259 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1260 | struct lttng_userspace_probe_location_comm *probe_location_comm; | |
1261 | enum lttng_userspace_probe_location_type type; | |
1262 | struct lttng_buffer_view lookup_method_view; | |
1263 | int consumed = 0; | |
1264 | int ret; | |
1265 | ||
1266 | ||
1267 | assert(buffer); | |
1268 | assert(buffer->data); | |
1269 | assert(location); | |
1270 | ||
1271 | lookup_method = NULL; | |
1272 | ||
1273 | if (buffer->size <= sizeof(*probe_location_comm)) { | |
1274 | ret = -LTTNG_ERR_INVALID; | |
1275 | goto end; | |
1276 | } | |
1277 | ||
1278 | probe_location_comm = | |
1279 | (struct lttng_userspace_probe_location_comm *) buffer->data; | |
1280 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; | |
1281 | consumed += sizeof(*probe_location_comm); | |
1282 | ||
1283 | switch (type) { | |
1284 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1285 | { | |
1286 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1287 | buffer, consumed, buffer->size - consumed); | |
1288 | ||
1289 | ret = lttng_userspace_probe_location_function_create_from_buffer( | |
1290 | &view, location); | |
1291 | if (ret < 0) { | |
1292 | goto end; | |
1293 | } | |
1294 | break; | |
1295 | } | |
f4d0bb2e FD |
1296 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1297 | { | |
1298 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1299 | buffer, consumed, buffer->size - consumed); | |
1300 | ||
1301 | ret = lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1302 | &view, location); | |
1303 | if (ret < 0) { | |
1304 | goto end; | |
1305 | } | |
1306 | break; | |
1307 | } | |
1ce46cfe JG |
1308 | default: |
1309 | ret = -LTTNG_ERR_INVALID; | |
1310 | goto end; | |
1311 | } | |
1312 | ||
1313 | consumed += ret; | |
1314 | if (buffer->size <= consumed) { | |
1315 | ret = -LTTNG_ERR_INVALID; | |
1316 | goto end; | |
1317 | } | |
1318 | ||
1319 | lookup_method_view = lttng_buffer_view_from_view(buffer, consumed, | |
1320 | buffer->size - consumed); | |
1321 | ret = lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1322 | &lookup_method_view, &lookup_method); | |
1323 | if (ret < 0) { | |
1324 | ret = -LTTNG_ERR_INVALID; | |
1325 | goto end; | |
1326 | } | |
1327 | ||
1328 | assert(lookup_method); | |
1329 | (*location)->lookup_method = lookup_method; | |
1330 | lookup_method = NULL; | |
1331 | ret += consumed; | |
1332 | end: | |
1333 | return ret; | |
1334 | } | |
1335 | ||
1336 | LTTNG_HIDDEN | |
1337 | int lttng_userspace_probe_location_function_set_binary_fd( | |
1338 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1339 | { | |
1340 | int ret = 0; | |
1341 | struct lttng_userspace_probe_location_function *function_location; | |
1342 | ||
1343 | assert(location); | |
1344 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1345 | ||
1346 | function_location = container_of(location, | |
1347 | struct lttng_userspace_probe_location_function, parent); | |
1348 | if (function_location->binary_fd >= 0) { | |
1349 | ret = close(function_location->binary_fd); | |
1350 | if (ret) { | |
1351 | PERROR("close"); | |
1352 | ret = -LTTNG_ERR_INVALID; | |
1353 | goto end; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | function_location->binary_fd = binary_fd; | |
1358 | end: | |
1359 | return ret; | |
1360 | } | |
1361 | ||
f4d0bb2e FD |
1362 | LTTNG_HIDDEN |
1363 | int lttng_userspace_probe_location_tracepoint_set_binary_fd( | |
1364 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1365 | { | |
1366 | int ret = 0; | |
1367 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1368 | ||
1369 | assert(location); | |
1370 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
1371 | ||
1372 | tracepoint_location = container_of(location, | |
1373 | struct lttng_userspace_probe_location_tracepoint, parent); | |
1374 | if (tracepoint_location->binary_fd >= 0) { | |
1375 | ret = close(tracepoint_location->binary_fd); | |
1376 | if (ret) { | |
1377 | PERROR("close"); | |
1378 | ret = -LTTNG_ERR_INVALID; | |
1379 | goto end; | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | tracepoint_location->binary_fd = binary_fd; | |
1384 | end: | |
1385 | return ret; | |
1386 | } | |
1387 | ||
1ce46cfe JG |
1388 | static |
1389 | int lttng_userspace_probe_location_function_flatten( | |
1390 | const struct lttng_userspace_probe_location *location, | |
1391 | struct lttng_dynamic_buffer *buffer) | |
1392 | { | |
1393 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1394 | struct lttng_userspace_probe_location_function *probe_function; | |
1395 | struct lttng_userspace_probe_location_function flat_probe; | |
1396 | size_t function_name_len, binary_path_len; | |
1397 | size_t padding_needed = 0; | |
1398 | char *flat_probe_start; | |
1399 | int storage_needed = 0; | |
1400 | int ret; | |
1401 | ||
1402 | assert(location); | |
1403 | ||
1404 | if (location->lookup_method && location->lookup_method->type != | |
1405 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1406 | ret = -LTTNG_ERR_INVALID; | |
1407 | goto end; | |
1408 | } | |
1409 | ||
1410 | probe_function = container_of(location, | |
1411 | struct lttng_userspace_probe_location_function, | |
1412 | parent); | |
1413 | assert(probe_function->function_name); | |
1414 | assert(probe_function->binary_path); | |
1415 | ||
1416 | storage_needed += | |
1417 | sizeof(struct lttng_userspace_probe_location_function); | |
1418 | function_name_len = strlen(probe_function->function_name) + 1; | |
1419 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1420 | storage_needed += function_name_len + binary_path_len; | |
1421 | ||
1422 | /* | |
1423 | * The lookup method is aligned to 64-bit within the buffer. | |
1424 | * This is needed even if there is no lookup method since | |
1425 | * the next structure in the buffer probably needs to be | |
1426 | * aligned too (depending on the arch). | |
1427 | */ | |
1428 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1429 | storage_needed += padding_needed; | |
1430 | ||
1431 | if (location->lookup_method) { | |
1432 | /* NOTE: elf look-up method is assumed here. */ | |
1433 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1434 | } | |
1435 | ||
1436 | if (!buffer) { | |
1437 | ret = storage_needed; | |
1438 | goto end; | |
1439 | } | |
1440 | ||
1441 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1442 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1443 | buffer->size + storage_needed); | |
1444 | if (ret) { | |
1445 | goto end; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1450 | ||
1451 | flat_probe_start = buffer->data + buffer->size; | |
1452 | flat_probe.parent.type = location->type; | |
1453 | /* | |
1454 | * The lookup method, if present, is the last element in the flat | |
1455 | * representation of the probe. | |
1456 | */ | |
1457 | if (location->lookup_method) { | |
1458 | flat_probe.parent.lookup_method = | |
1459 | (struct lttng_userspace_probe_location_lookup_method *) | |
1460 | (flat_probe_start + sizeof(flat_probe) + | |
1461 | function_name_len + binary_path_len + padding_needed); | |
1462 | } else { | |
1463 | flat_probe.parent.lookup_method = NULL; | |
1464 | } | |
1465 | ||
1466 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1467 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
1468 | flat_probe.binary_fd = -1; | |
1469 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, | |
1470 | sizeof(flat_probe)); | |
1471 | if (ret) { | |
1472 | goto end; | |
1473 | } | |
1474 | ||
1475 | ret = lttng_dynamic_buffer_append(buffer, | |
1476 | probe_function->function_name, function_name_len); | |
1477 | if (ret) { | |
1478 | goto end; | |
1479 | } | |
1480 | ret = lttng_dynamic_buffer_append(buffer, | |
1481 | probe_function->binary_path, binary_path_len); | |
1482 | if (ret) { | |
1483 | goto end; | |
1484 | } | |
1485 | ||
1486 | /* Insert padding before the lookup method. */ | |
1487 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1488 | buffer->size + padding_needed); | |
1489 | if (ret) { | |
1490 | goto end; | |
1491 | } | |
1492 | ||
1493 | if (!location->lookup_method) { | |
1494 | /* Not an error, the default method is used. */ | |
1495 | ret = storage_needed; | |
1496 | goto end; | |
1497 | } | |
1498 | ||
1499 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1500 | flat_lookup_method.parent.type = | |
1501 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1502 | ret = lttng_dynamic_buffer_append(buffer, | |
1503 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1504 | if (ret) { | |
1505 | goto end; | |
1506 | } | |
1507 | ret = storage_needed; | |
1508 | end: | |
1509 | return ret; | |
1510 | } | |
1511 | ||
f4d0bb2e FD |
1512 | static |
1513 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1514 | const struct lttng_userspace_probe_location *location, | |
1515 | struct lttng_dynamic_buffer *buffer) | |
1516 | { | |
1517 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1518 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1519 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1520 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1521 | size_t padding_needed = 0; | |
1522 | int storage_needed = 0; | |
1523 | char *flat_probe_start; | |
1524 | int ret = 0; | |
1525 | ||
1526 | assert(location); | |
1527 | ||
1528 | /* Only SDT tracepoints are supported at the moment */ | |
1529 | if (location->lookup_method && location->lookup_method->type != | |
1530 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1531 | ret = -LTTNG_ERR_INVALID; | |
1532 | goto end; | |
1533 | } | |
1534 | probe_tracepoint = container_of(location, | |
1535 | struct lttng_userspace_probe_location_tracepoint, | |
1536 | parent); | |
1537 | assert(probe_tracepoint->probe_name); | |
1538 | assert(probe_tracepoint->provider_name); | |
1539 | assert(probe_tracepoint->binary_path); | |
1540 | ||
1541 | /* Compute the storage space needed to flatten the probe location */ | |
1542 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1543 | ||
1544 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1545 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1546 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1547 | ||
1548 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1549 | ||
1550 | /* | |
1551 | * The lookup method is aligned to 64-bit within the buffer. | |
1552 | * This is needed even if there is no lookup method since | |
1553 | * the next structure in the buffer probably needs to be | |
1554 | * aligned too (depending on the arch). | |
1555 | */ | |
1556 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1557 | storage_needed += padding_needed; | |
1558 | ||
1559 | if (location->lookup_method) { | |
1560 | /* NOTE: elf look-up method is assumed here. */ | |
1561 | storage_needed += | |
1562 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1567 | */ | |
1568 | if (!buffer) { | |
1569 | ret = storage_needed; | |
1570 | goto end; | |
1571 | } | |
1572 | ||
1573 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1574 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1575 | buffer->size + storage_needed); | |
1576 | if (ret) { | |
1577 | goto end; | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1582 | ||
1583 | flat_probe_start = buffer->data + buffer->size; | |
1584 | flat_probe.parent.type = location->type; | |
1585 | ||
1586 | /* | |
1587 | * The lookup method, if present, is the last element in the flat | |
1588 | * representation of the probe. | |
1589 | */ | |
1590 | if (location->lookup_method) { | |
1591 | flat_probe.parent.lookup_method = | |
1592 | (struct lttng_userspace_probe_location_lookup_method *) | |
1593 | (flat_probe_start + sizeof(flat_probe) + | |
1594 | probe_name_len + provider_name_len + | |
1595 | binary_path_len + padding_needed); | |
1596 | } else { | |
1597 | flat_probe.parent.lookup_method = NULL; | |
1598 | } | |
1599 | ||
1600 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1601 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1602 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
1603 | flat_probe.binary_fd = -1; | |
1604 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); | |
1605 | if (ret) { | |
1606 | goto end; | |
1607 | } | |
1608 | ||
1609 | /* Append all the fields to the buffer */ | |
1610 | ret = lttng_dynamic_buffer_append(buffer, | |
1611 | probe_tracepoint->probe_name, probe_name_len); | |
1612 | if (ret) { | |
1613 | goto end; | |
1614 | } | |
1615 | ret = lttng_dynamic_buffer_append(buffer, | |
1616 | probe_tracepoint->provider_name, provider_name_len); | |
1617 | if (ret) { | |
1618 | goto end; | |
1619 | } | |
1620 | ret = lttng_dynamic_buffer_append(buffer, | |
1621 | probe_tracepoint->binary_path, binary_path_len); | |
1622 | if (ret) { | |
1623 | goto end; | |
1624 | } | |
1625 | ||
1626 | /* Insert padding before the lookup method. */ | |
1627 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1628 | if (ret) { | |
1629 | goto end; | |
1630 | } | |
1631 | ||
1632 | if (!location->lookup_method) { | |
1633 | /* Not an error, the default method is used. */ | |
1634 | ret = storage_needed; | |
1635 | goto end; | |
1636 | } | |
1637 | ||
1638 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1639 | ||
1640 | flat_lookup_method.parent.type = | |
1641 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1642 | ret = lttng_dynamic_buffer_append(buffer, | |
1643 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1644 | if (ret) { | |
1645 | goto end; | |
1646 | } | |
1647 | ret = storage_needed; | |
1648 | end: | |
1649 | return ret; | |
1650 | } | |
1651 | ||
1ce46cfe JG |
1652 | LTTNG_HIDDEN |
1653 | int lttng_userspace_probe_location_flatten( | |
1654 | const struct lttng_userspace_probe_location *location, | |
1655 | struct lttng_dynamic_buffer *buffer) | |
1656 | { | |
1657 | int ret; | |
1658 | if (!location) { | |
1659 | ret = -LTTNG_ERR_INVALID; | |
1660 | goto end; | |
1661 | } | |
1662 | ||
1663 | /* Only types currently supported. */ | |
1664 | switch (location->type) { | |
1665 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1666 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1667 | break; | |
f4d0bb2e FD |
1668 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1669 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1670 | break; | |
1ce46cfe JG |
1671 | default: |
1672 | ret = -LTTNG_ERR_INVALID; | |
1673 | goto end; | |
1674 | } | |
1675 | ||
1676 | end: | |
1677 | return ret; | |
1678 | } | |
394357fe FD |
1679 | |
1680 | LTTNG_HIDDEN | |
1681 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1682 | const struct lttng_userspace_probe_location *location) | |
1683 | { | |
1684 | struct lttng_userspace_probe_location *new_location = NULL; | |
1685 | enum lttng_userspace_probe_location_type type; | |
1686 | ||
1687 | if (!location) { | |
1688 | goto err; | |
1689 | } | |
1690 | ||
1691 | type = lttng_userspace_probe_location_get_type(location); | |
1692 | switch (type) { | |
1693 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1694 | new_location = | |
1695 | lttng_userspace_probe_location_function_copy(location); | |
1696 | if (!new_location) { | |
1697 | goto err; | |
1698 | } | |
1699 | break; | |
f4d0bb2e FD |
1700 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1701 | new_location = | |
1702 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1703 | if (!new_location) { | |
1704 | goto err; | |
1705 | } | |
1706 | break; | |
394357fe FD |
1707 | default: |
1708 | new_location = NULL; | |
1709 | goto err; | |
1710 | } | |
1711 | err: | |
1712 | return new_location; | |
1713 | } |