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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); | |
7c86453b | 279 | free(binary_path_copy); |
f4d0bb2e FD |
280 | if (binary_fd >= 0) { |
281 | if (close(binary_fd)) { | |
282 | PERROR("Error closing binary fd in error path"); | |
283 | } | |
284 | } | |
285 | end: | |
286 | return ret; | |
287 | } | |
288 | ||
1ce46cfe JG |
289 | struct lttng_userspace_probe_location * |
290 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
291 | const char *function_name, | |
292 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
293 | { | |
294 | struct lttng_userspace_probe_location *ret = NULL; | |
295 | ||
296 | if (!binary_path || !function_name) { | |
297 | ERR("Invalid argument(s)"); | |
298 | goto end; | |
299 | } | |
300 | ||
301 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
302 | lookup_method)) { | |
303 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
304 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
305 | break; | |
306 | default: | |
307 | /* Invalid probe location lookup method. */ | |
308 | goto end; | |
309 | } | |
310 | ||
311 | ret = lttng_userspace_probe_location_function_create_no_check( | |
312 | binary_path, function_name, lookup_method, true); | |
313 | end: | |
314 | return ret; | |
315 | } | |
316 | ||
f4d0bb2e FD |
317 | struct lttng_userspace_probe_location * |
318 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
319 | const char *provider_name, const char *probe_name, | |
320 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
321 | { | |
322 | struct lttng_userspace_probe_location *ret = NULL; | |
323 | ||
324 | if (!binary_path || !probe_name || !provider_name) { | |
325 | ERR("Invalid argument(s)"); | |
326 | goto end; | |
327 | } | |
328 | ||
329 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
330 | lookup_method)) { | |
331 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
332 | break; | |
333 | default: | |
334 | /* Invalid probe location lookup method. */ | |
335 | goto end; | |
336 | } | |
337 | ||
338 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
339 | binary_path, provider_name, probe_name, lookup_method, true); | |
340 | end: | |
341 | return ret; | |
342 | } | |
343 | ||
394357fe FD |
344 | static struct lttng_userspace_probe_location_lookup_method * |
345 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
346 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
347 | { | |
348 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
349 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
350 | ||
351 | assert(lookup_method); | |
352 | assert(lookup_method->type == | |
353 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); | |
354 | ||
355 | elf_method = zmalloc(sizeof(*elf_method)); | |
356 | if (!elf_method) { | |
357 | PERROR("Error allocating ELF userspace probe lookup method"); | |
358 | goto error; | |
359 | } | |
360 | ||
361 | elf_method->parent.type = lookup_method->type; | |
362 | parent = &elf_method->parent; | |
363 | ||
364 | goto end; | |
365 | error: | |
366 | parent = NULL; | |
367 | end: | |
368 | return parent; | |
369 | } | |
370 | ||
f4d0bb2e FD |
371 | static struct lttng_userspace_probe_location_lookup_method * |
372 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
373 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
374 | { | |
375 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
376 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
377 | ||
378 | assert(lookup_method); | |
379 | assert(lookup_method->type == | |
380 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); | |
381 | ||
382 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
383 | if (!sdt_method) { | |
384 | PERROR("zmalloc"); | |
385 | goto error; | |
386 | } | |
387 | ||
388 | sdt_method->parent.type = lookup_method->type; | |
389 | parent = &sdt_method->parent; | |
390 | ||
391 | goto end; | |
392 | ||
393 | error: | |
394 | parent = NULL; | |
395 | end: | |
396 | return parent; | |
397 | } | |
398 | ||
394357fe FD |
399 | static struct lttng_userspace_probe_location * |
400 | lttng_userspace_probe_location_function_copy( | |
401 | const struct lttng_userspace_probe_location *location) | |
402 | { | |
403 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
404 | struct lttng_userspace_probe_location *new_location = NULL; | |
405 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
406 | const char *binary_path = NULL; |
407 | const char *function_name = NULL; | |
d7ee7196 | 408 | int fd, new_fd; |
394357fe FD |
409 | |
410 | assert(location); | |
411 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
412 | ||
cc831309 FD |
413 | /* Get probe location fields */ |
414 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 415 | if (!binary_path) { |
cc831309 | 416 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
417 | goto error; |
418 | } | |
419 | ||
cc831309 | 420 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 421 | if (!function_name) { |
cc831309 | 422 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
423 | goto error; |
424 | } | |
425 | ||
426 | /* Duplicate the binary fd */ | |
d7ee7196 | 427 | fd = lttng_userspace_probe_location_function_get_binary_fd(location); |
394357fe | 428 | if (fd == -1) { |
d7ee7196 FD |
429 | ERR("Error getting file descriptor to binary"); |
430 | goto error; | |
431 | } | |
432 | ||
433 | new_fd = dup(fd); | |
434 | if (new_fd == -1) { | |
394357fe FD |
435 | PERROR("Error duplicating file descriptor to binary"); |
436 | goto error; | |
437 | } | |
438 | ||
439 | /* | |
440 | * Duplicate probe location method fields | |
441 | */ | |
442 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
443 | location->lookup_method); | |
444 | switch (lookup_type) { | |
445 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
446 | lookup_method = | |
447 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
448 | location->lookup_method); | |
449 | if (!lookup_method) { | |
450 | goto close_fd; | |
451 | } | |
452 | break; | |
453 | default: | |
454 | /* Invalid probe location lookup method. */ | |
455 | goto close_fd; | |
456 | } | |
457 | ||
458 | /* Create the probe_location */ | |
459 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 460 | binary_path, function_name, lookup_method, false); |
394357fe FD |
461 | if (!new_location) { |
462 | goto destroy_lookup_method; | |
463 | } | |
464 | ||
465 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 466 | if (lttng_userspace_probe_location_function_set_binary_fd(new_location, new_fd) < 0) { |
394357fe FD |
467 | goto destroy_probe_location; |
468 | } | |
469 | ||
470 | goto end; | |
471 | ||
472 | destroy_probe_location: | |
473 | lttng_userspace_probe_location_destroy(new_location); | |
474 | destroy_lookup_method: | |
475 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
476 | close_fd: | |
d7ee7196 | 477 | if (close(new_fd) < 0) { |
394357fe FD |
478 | PERROR("Error closing duplicated file descriptor in error path"); |
479 | } | |
480 | error: | |
394357fe FD |
481 | new_location = NULL; |
482 | end: | |
483 | return new_location; | |
484 | } | |
485 | ||
f4d0bb2e FD |
486 | static struct lttng_userspace_probe_location * |
487 | lttng_userspace_probe_location_tracepoint_copy( | |
488 | const struct lttng_userspace_probe_location *location) | |
489 | { | |
490 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
491 | struct lttng_userspace_probe_location *new_location = NULL; | |
492 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
493 | const char *binary_path = NULL; |
494 | const char *probe_name = NULL; | |
495 | const char *provider_name = NULL; | |
d7ee7196 | 496 | int fd, new_fd; |
f4d0bb2e FD |
497 | |
498 | assert(location); | |
499 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
500 | ||
cc831309 FD |
501 | /* Get probe location fields */ |
502 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); | |
f4d0bb2e | 503 | if (!binary_path) { |
cc831309 | 504 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
505 | goto error; |
506 | } | |
507 | ||
cc831309 | 508 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 509 | if (!probe_name) { |
cc831309 | 510 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
511 | goto error; |
512 | } | |
513 | ||
cc831309 | 514 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 515 | if (!provider_name) { |
cc831309 | 516 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
517 | goto error; |
518 | } | |
519 | ||
520 | /* Duplicate the binary fd */ | |
d7ee7196 | 521 | fd = lttng_userspace_probe_location_tracepoint_get_binary_fd(location); |
f4d0bb2e | 522 | if (fd == -1) { |
d7ee7196 FD |
523 | ERR("Error getting file descriptor to binary"); |
524 | goto error; | |
525 | } | |
526 | ||
527 | new_fd = dup(fd); | |
528 | if (new_fd == -1) { | |
cc831309 | 529 | PERROR("Error duplicating file descriptor to binary"); |
f4d0bb2e FD |
530 | goto error; |
531 | } | |
532 | ||
533 | /* | |
534 | * Duplicate probe location method fields | |
535 | */ | |
536 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
537 | location->lookup_method); | |
538 | switch (lookup_type) { | |
539 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
540 | lookup_method = | |
541 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
542 | location->lookup_method); | |
543 | if (!lookup_method) { | |
544 | goto close_fd; | |
545 | } | |
546 | break; | |
547 | default: | |
548 | /* Invalid probe location lookup method. */ | |
549 | goto close_fd; | |
550 | } | |
551 | ||
552 | /* Create the probe_location */ | |
553 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 554 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
555 | if (!new_location) { |
556 | goto destroy_lookup_method; | |
557 | } | |
558 | ||
559 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 560 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd(new_location, new_fd) < 0) { |
f4d0bb2e FD |
561 | goto destroy_probe_location; |
562 | } | |
563 | ||
564 | goto end; | |
565 | ||
566 | destroy_probe_location: | |
567 | lttng_userspace_probe_location_destroy(new_location); | |
568 | destroy_lookup_method: | |
569 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
570 | close_fd: | |
d7ee7196 | 571 | if (close(new_fd) < 0) { |
cc831309 | 572 | PERROR("Error closing duplicated file descriptor in error path"); |
f4d0bb2e FD |
573 | } |
574 | error: | |
f4d0bb2e FD |
575 | new_location = NULL; |
576 | end: | |
577 | return new_location; | |
578 | } | |
579 | ||
1ce46cfe JG |
580 | const char *lttng_userspace_probe_location_function_get_binary_path( |
581 | const struct lttng_userspace_probe_location *location) | |
582 | { | |
583 | const char *ret = NULL; | |
584 | struct lttng_userspace_probe_location_function *function_location; | |
585 | ||
586 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
587 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
588 | ERR("Invalid argument(s)"); | |
589 | goto end; | |
590 | } | |
591 | ||
592 | function_location = container_of(location, | |
593 | struct lttng_userspace_probe_location_function, | |
594 | parent); | |
595 | ret = function_location->binary_path; | |
596 | end: | |
597 | return ret; | |
598 | } | |
599 | ||
f4d0bb2e FD |
600 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
601 | const struct lttng_userspace_probe_location *location) | |
602 | { | |
603 | const char *ret = NULL; | |
604 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
605 | ||
606 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
607 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
608 | ERR("Invalid argument(s)"); | |
609 | goto end; | |
610 | } | |
611 | ||
612 | tracepoint_location = container_of(location, | |
613 | struct lttng_userspace_probe_location_tracepoint, | |
614 | parent); | |
615 | ret = tracepoint_location->binary_path; | |
616 | end: | |
617 | return ret; | |
618 | } | |
619 | ||
1ce46cfe JG |
620 | const char *lttng_userspace_probe_location_function_get_function_name( |
621 | const struct lttng_userspace_probe_location *location) | |
622 | { | |
623 | const char *ret = NULL; | |
624 | struct lttng_userspace_probe_location_function *function_location; | |
625 | ||
626 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
627 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
628 | ERR("Invalid argument(s)"); | |
629 | goto end; | |
630 | } | |
631 | ||
632 | function_location = container_of(location, | |
633 | struct lttng_userspace_probe_location_function, parent); | |
634 | ret = function_location->function_name; | |
635 | end: | |
636 | return ret; | |
637 | } | |
638 | ||
f4d0bb2e FD |
639 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
640 | const struct lttng_userspace_probe_location *location) | |
641 | { | |
642 | const char *ret = NULL; | |
643 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
644 | ||
645 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
646 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
647 | ERR("Invalid argument(s)"); | |
648 | goto end; | |
649 | } | |
650 | ||
651 | tracepoint_location = container_of(location, | |
652 | struct lttng_userspace_probe_location_tracepoint, parent); | |
653 | ret = tracepoint_location->probe_name; | |
654 | end: | |
655 | return ret; | |
656 | } | |
657 | ||
658 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
659 | const struct lttng_userspace_probe_location *location) | |
660 | { | |
661 | const char *ret = NULL; | |
662 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
663 | ||
664 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
665 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
666 | ERR("Invalid argument(s)"); | |
667 | goto end; | |
668 | } | |
669 | ||
670 | tracepoint_location = container_of(location, | |
671 | struct lttng_userspace_probe_location_tracepoint, parent); | |
672 | ret = tracepoint_location->provider_name; | |
673 | end: | |
674 | return ret; | |
675 | } | |
676 | ||
1ce46cfe JG |
677 | int lttng_userspace_probe_location_function_get_binary_fd( |
678 | const struct lttng_userspace_probe_location *location) | |
679 | { | |
680 | int ret = -1; | |
681 | struct lttng_userspace_probe_location_function *function_location; | |
682 | ||
683 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
684 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
685 | ERR("Invalid argument(s)"); | |
686 | goto end; | |
687 | } | |
688 | ||
689 | function_location = container_of(location, | |
690 | struct lttng_userspace_probe_location_function, parent); | |
691 | ret = function_location->binary_fd; | |
692 | end: | |
693 | return ret; | |
694 | } | |
695 | ||
9d3981b5 JG |
696 | enum lttng_userspace_probe_location_function_instrumentation_type |
697 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
698 | const struct lttng_userspace_probe_location *location) | |
699 | { | |
700 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
701 | struct lttng_userspace_probe_location_function *function_location; | |
702 | ||
703 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
704 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
705 | ERR("Invalid argument(s)"); | |
706 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; | |
707 | goto end; | |
708 | } | |
709 | ||
710 | function_location = container_of(location, | |
711 | struct lttng_userspace_probe_location_function, parent); | |
712 | type = function_location->instrumentation_type; | |
713 | end: | |
714 | return type; | |
715 | } | |
716 | ||
717 | enum lttng_userspace_probe_location_status | |
718 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
719 | const struct lttng_userspace_probe_location *location, | |
720 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
721 | { | |
722 | enum lttng_userspace_probe_location_status status = | |
723 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
724 | struct lttng_userspace_probe_location_function *function_location; | |
725 | ||
726 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
727 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
728 | instrumentation_type != | |
729 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
730 | ERR("Invalid argument(s)"); | |
731 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; | |
732 | goto end; | |
733 | } | |
734 | ||
735 | function_location = container_of(location, | |
736 | struct lttng_userspace_probe_location_function, parent); | |
737 | function_location->instrumentation_type = instrumentation_type; | |
738 | end: | |
739 | return status; | |
740 | } | |
741 | ||
f4d0bb2e FD |
742 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
743 | const struct lttng_userspace_probe_location *location) | |
744 | { | |
745 | int ret = -1; | |
746 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
747 | ||
748 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
749 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
750 | ERR("Invalid argument(s)"); | |
751 | goto end; | |
752 | } | |
753 | ||
754 | tracepoint_location = container_of(location, | |
755 | struct lttng_userspace_probe_location_tracepoint, parent); | |
756 | ret = tracepoint_location->binary_fd; | |
757 | end: | |
758 | return ret; | |
759 | } | |
760 | ||
1ce46cfe JG |
761 | static struct lttng_userspace_probe_location_lookup_method * |
762 | lttng_userspace_probe_location_function_get_lookup_method( | |
763 | const struct lttng_userspace_probe_location *location) | |
764 | { | |
765 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
766 | ||
767 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
768 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
769 | ERR("Invalid argument(s)"); | |
770 | goto end; | |
771 | } | |
772 | ||
773 | ret = location->lookup_method; | |
774 | end: | |
775 | return ret; | |
776 | } | |
777 | ||
f4d0bb2e FD |
778 | static struct lttng_userspace_probe_location_lookup_method * |
779 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
780 | const struct lttng_userspace_probe_location *location) | |
781 | { | |
782 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
783 | ||
784 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
785 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
786 | ERR("Invalid argument(s)"); | |
787 | goto end; | |
788 | } | |
789 | ||
790 | ret = location->lookup_method; | |
791 | end: | |
792 | return ret; | |
793 | } | |
794 | ||
87597c2c | 795 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
796 | lttng_userspace_probe_location_get_lookup_method( |
797 | const struct lttng_userspace_probe_location *location) | |
798 | { | |
799 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
800 | ||
801 | assert(location); | |
802 | switch (location->type) { | |
803 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
804 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
805 | location); | |
806 | break; | |
f4d0bb2e FD |
807 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
808 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
809 | location); | |
810 | break; | |
1ce46cfe JG |
811 | default: |
812 | ERR("Unknowned lookup method."); | |
813 | break; | |
814 | } | |
815 | return ret; | |
816 | } | |
817 | ||
818 | static | |
819 | int lttng_userspace_probe_location_lookup_method_serialize( | |
820 | struct lttng_userspace_probe_location_lookup_method *method, | |
821 | struct lttng_dynamic_buffer *buffer) | |
822 | { | |
823 | int ret; | |
824 | struct lttng_userspace_probe_location_lookup_method_comm | |
825 | lookup_method_comm; | |
826 | ||
827 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
828 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
829 | if (buffer) { | |
830 | ret = lttng_dynamic_buffer_append(buffer, &lookup_method_comm, | |
831 | sizeof(lookup_method_comm)); | |
832 | if (ret) { | |
833 | goto end; | |
834 | } | |
835 | } | |
f4d0bb2e FD |
836 | ret = sizeof(lookup_method_comm); |
837 | end: | |
838 | return ret; | |
839 | } | |
840 | ||
841 | static | |
842 | int lttng_userspace_probe_location_function_serialize( | |
843 | const struct lttng_userspace_probe_location *location, | |
844 | struct lttng_dynamic_buffer *buffer, | |
845 | int *binary_fd) | |
846 | { | |
847 | int ret; | |
848 | size_t function_name_len, binary_path_len; | |
849 | struct lttng_userspace_probe_location_function *location_function; | |
850 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
851 | ||
852 | assert(location); | |
853 | assert(lttng_userspace_probe_location_get_type(location) == | |
854 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
855 | ||
856 | location_function = container_of(location, | |
857 | struct lttng_userspace_probe_location_function, | |
858 | parent); | |
859 | if (!location_function->function_name || !location_function->binary_path) { | |
860 | ret = -LTTNG_ERR_INVALID; | |
861 | goto end; | |
862 | } | |
863 | ||
864 | if (binary_fd && location_function->binary_fd < 0) { | |
865 | ret = -LTTNG_ERR_INVALID; | |
866 | goto end; | |
867 | } | |
868 | ||
869 | if (binary_fd) { | |
870 | *binary_fd = location_function->binary_fd; | |
871 | } | |
872 | ||
873 | function_name_len = strlen(location_function->function_name); | |
874 | if (function_name_len == 0) { | |
875 | ret = -LTTNG_ERR_INVALID; | |
876 | goto end; | |
877 | } | |
878 | binary_path_len = strlen(location_function->binary_path); | |
879 | if (binary_path_len == 0) { | |
880 | ret = -LTTNG_ERR_INVALID; | |
881 | goto end; | |
882 | } | |
883 | ||
884 | location_function_comm.function_name_len = function_name_len + 1; | |
885 | location_function_comm.binary_path_len = binary_path_len + 1; | |
886 | ||
887 | if (buffer) { | |
888 | ret = lttng_dynamic_buffer_append(buffer, | |
889 | &location_function_comm, | |
890 | sizeof(location_function_comm)); | |
891 | if (ret) { | |
892 | ret = -LTTNG_ERR_INVALID; | |
893 | goto end; | |
894 | } | |
895 | ret = lttng_dynamic_buffer_append(buffer, | |
896 | location_function->function_name, | |
897 | location_function_comm.function_name_len); | |
898 | if (ret) { | |
899 | ret = -LTTNG_ERR_INVALID; | |
900 | goto end; | |
901 | } | |
902 | ret = lttng_dynamic_buffer_append(buffer, | |
903 | location_function->binary_path, | |
904 | location_function_comm.binary_path_len); | |
905 | if (ret) { | |
906 | ret = -LTTNG_ERR_INVALID; | |
907 | goto end; | |
908 | } | |
909 | } | |
910 | ret = sizeof(location_function_comm) + | |
911 | location_function_comm.function_name_len + | |
912 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
913 | end: |
914 | return ret; | |
915 | } | |
916 | ||
917 | static | |
f4d0bb2e | 918 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe JG |
919 | const struct lttng_userspace_probe_location *location, |
920 | struct lttng_dynamic_buffer *buffer, | |
921 | int *binary_fd) | |
922 | { | |
923 | int ret; | |
f4d0bb2e FD |
924 | size_t probe_name_len, provider_name_len, binary_path_len; |
925 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
926 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe JG |
927 | |
928 | assert(location); | |
929 | assert(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 930 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 931 | |
f4d0bb2e FD |
932 | location_tracepoint = container_of(location, |
933 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 934 | parent); |
f4d0bb2e FD |
935 | if (!location_tracepoint->probe_name || |
936 | !location_tracepoint->provider_name || | |
937 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
938 | ret = -LTTNG_ERR_INVALID; |
939 | goto end; | |
940 | } | |
941 | ||
f4d0bb2e | 942 | if (binary_fd && location_tracepoint->binary_fd < 0) { |
1ce46cfe JG |
943 | ret = -LTTNG_ERR_INVALID; |
944 | goto end; | |
945 | } | |
946 | ||
947 | if (binary_fd) { | |
f4d0bb2e | 948 | *binary_fd = location_tracepoint->binary_fd; |
1ce46cfe JG |
949 | } |
950 | ||
f4d0bb2e FD |
951 | probe_name_len = strlen(location_tracepoint->probe_name); |
952 | if (probe_name_len == 0) { | |
1ce46cfe JG |
953 | ret = -LTTNG_ERR_INVALID; |
954 | goto end; | |
955 | } | |
f4d0bb2e FD |
956 | |
957 | provider_name_len = strlen(location_tracepoint->provider_name); | |
958 | if (provider_name_len == 0) { | |
959 | ret = -LTTNG_ERR_INVALID; | |
960 | goto end; | |
961 | } | |
962 | ||
963 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
964 | if (binary_path_len == 0) { |
965 | ret = -LTTNG_ERR_INVALID; | |
966 | goto end; | |
967 | } | |
968 | ||
f4d0bb2e FD |
969 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
970 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
971 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe JG |
972 | |
973 | if (buffer) { | |
974 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
975 | &location_tracepoint_comm, |
976 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
977 | if (ret) { |
978 | ret = -LTTNG_ERR_INVALID; | |
979 | goto end; | |
980 | } | |
981 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
982 | location_tracepoint->probe_name, |
983 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
984 | if (ret) { |
985 | ret = -LTTNG_ERR_INVALID; | |
986 | goto end; | |
987 | } | |
988 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
989 | location_tracepoint->provider_name, |
990 | location_tracepoint_comm.provider_name_len); | |
991 | if (ret) { | |
992 | ret = -LTTNG_ERR_INVALID; | |
993 | goto end; | |
994 | } | |
995 | ret = lttng_dynamic_buffer_append(buffer, | |
996 | location_tracepoint->binary_path, | |
997 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
998 | if (ret) { |
999 | ret = -LTTNG_ERR_INVALID; | |
1000 | goto end; | |
1001 | } | |
1002 | } | |
f4d0bb2e FD |
1003 | ret = sizeof(location_tracepoint_comm) + |
1004 | location_tracepoint_comm.probe_name_len + | |
1005 | location_tracepoint_comm.provider_name_len + | |
1006 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1007 | end: |
1008 | return ret; | |
1009 | } | |
1010 | ||
1011 | LTTNG_HIDDEN | |
1012 | int lttng_userspace_probe_location_serialize( | |
1013 | const struct lttng_userspace_probe_location *location, | |
1014 | struct lttng_dynamic_buffer *buffer, | |
1015 | int *binary_fd) | |
1016 | { | |
1017 | int ret, buffer_use = 0; | |
1018 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1019 | ||
1020 | if (!location) { | |
1021 | ERR("Invalid argument(s)"); | |
1022 | ret = -LTTNG_ERR_INVALID; | |
1023 | goto end; | |
1024 | } | |
1025 | ||
56f0bc67 JG |
1026 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1027 | ||
1ce46cfe JG |
1028 | location_generic_comm.type = (int8_t) location->type; |
1029 | if (buffer) { | |
1030 | ret = lttng_dynamic_buffer_append(buffer, &location_generic_comm, | |
1031 | sizeof(location_generic_comm)); | |
1032 | if (ret) { | |
1033 | goto end; | |
1034 | } | |
1035 | } | |
1036 | buffer_use += sizeof(location_generic_comm); | |
1037 | ||
1038 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1039 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1040 | ret = lttng_userspace_probe_location_function_serialize( | |
1041 | location, buffer, binary_fd); | |
1042 | break; | |
f4d0bb2e FD |
1043 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1044 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
1045 | location, buffer, binary_fd); | |
1046 | break; | |
1ce46cfe JG |
1047 | default: |
1048 | ERR("Unsupported probe location type"); | |
1049 | ret = -LTTNG_ERR_INVALID; | |
1050 | goto end; | |
1051 | } | |
1052 | if (ret < 0) { | |
1053 | goto end; | |
1054 | } | |
1055 | buffer_use += ret; | |
1056 | ||
1057 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
1058 | location->lookup_method, buffer); | |
1059 | if (ret < 0) { | |
1060 | goto end; | |
1061 | } | |
1062 | ret += buffer_use; | |
1063 | end: | |
1064 | return ret; | |
1065 | } | |
1066 | ||
1067 | static | |
1068 | int lttng_userspace_probe_location_function_create_from_buffer( | |
1069 | const struct lttng_buffer_view *buffer, | |
1070 | struct lttng_userspace_probe_location **location) | |
1071 | { | |
1072 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1073 | const char *function_name_src, *binary_path_src; | |
1074 | char *function_name = NULL, *binary_path = NULL; | |
1075 | int ret = 0; | |
1076 | ||
1077 | assert(buffer); | |
1078 | assert(buffer->data); | |
1079 | assert(location); | |
1080 | ||
1081 | location_function_comm = | |
1082 | (struct lttng_userspace_probe_location_function_comm *) buffer->data; | |
1083 | ||
1084 | const size_t expected_size = sizeof(*location_function_comm) + | |
1085 | location_function_comm->function_name_len + | |
1086 | location_function_comm->binary_path_len; | |
1087 | ||
1088 | if (buffer->size < expected_size) { | |
1089 | ret = -LTTNG_ERR_INVALID; | |
1090 | goto end; | |
1091 | } | |
1092 | ||
1093 | function_name_src = buffer->data + sizeof(*location_function_comm); | |
1094 | binary_path_src = function_name_src + | |
1095 | location_function_comm->function_name_len; | |
1096 | ||
1097 | if (function_name_src[location_function_comm->function_name_len - 1] != '\0') { | |
1098 | ret = -LTTNG_ERR_INVALID; | |
1099 | goto end; | |
1100 | } | |
1101 | if (binary_path_src[location_function_comm->binary_path_len - 1] != '\0') { | |
1102 | ret = -LTTNG_ERR_INVALID; | |
1103 | goto end; | |
1104 | } | |
1105 | ||
1106 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1107 | if (!function_name) { | |
1108 | PERROR("lttng_strndup"); | |
1109 | goto end; | |
1110 | } | |
1111 | ||
1112 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1113 | if (!binary_path) { | |
1114 | PERROR("lttng_strndup"); | |
1115 | goto end; | |
1116 | } | |
1117 | ||
1118 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1119 | binary_path, function_name, NULL, false); | |
1120 | if (!(*location)) { | |
1121 | ret = -LTTNG_ERR_INVALID; | |
1122 | goto end; | |
1123 | } | |
1124 | ||
1125 | ret = (int) expected_size; | |
1126 | end: | |
1127 | free(function_name); | |
1128 | free(binary_path); | |
1129 | return ret; | |
1130 | } | |
1131 | ||
f4d0bb2e FD |
1132 | static |
1133 | int lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1134 | const struct lttng_buffer_view *buffer, | |
1135 | struct lttng_userspace_probe_location **location) | |
1136 | { | |
1137 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1138 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1139 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1140 | int ret = 0; | |
1141 | ||
1142 | assert(buffer); | |
1143 | assert(buffer->data); | |
1144 | assert(location); | |
1145 | ||
1146 | location_tracepoint_comm = | |
1147 | (struct lttng_userspace_probe_location_tracepoint_comm *) buffer->data; | |
1148 | ||
1149 | const size_t expected_size = sizeof(*location_tracepoint_comm) + | |
1150 | location_tracepoint_comm->probe_name_len + | |
1151 | location_tracepoint_comm->provider_name_len + | |
1152 | location_tracepoint_comm->binary_path_len; | |
1153 | ||
1154 | if (buffer->size < expected_size) { | |
1155 | ret = -LTTNG_ERR_INVALID; | |
1156 | goto end; | |
1157 | } | |
1158 | ||
1159 | probe_name_src = buffer->data + sizeof(*location_tracepoint_comm); | |
1160 | provider_name_src = probe_name_src + | |
1161 | location_tracepoint_comm->probe_name_len; | |
1162 | binary_path_src = provider_name_src + | |
1163 | location_tracepoint_comm->provider_name_len; | |
1164 | ||
1165 | if (probe_name_src[location_tracepoint_comm->probe_name_len - 1] != '\0') { | |
1166 | ret = -LTTNG_ERR_INVALID; | |
1167 | goto end; | |
1168 | } | |
1169 | ||
1170 | if (provider_name_src[location_tracepoint_comm->provider_name_len - 1] != '\0') { | |
1171 | ret = -LTTNG_ERR_INVALID; | |
1172 | goto end; | |
1173 | } | |
1174 | ||
1175 | if (binary_path_src[location_tracepoint_comm->binary_path_len - 1] != '\0') { | |
1176 | ret = -LTTNG_ERR_INVALID; | |
1177 | goto end; | |
1178 | } | |
1179 | ||
1180 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1181 | if (!probe_name) { | |
1182 | PERROR("lttng_strndup"); | |
1183 | goto end; | |
1184 | } | |
1185 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1186 | if (!provider_name) { | |
1187 | PERROR("lttng_strndup"); | |
1188 | goto end; | |
1189 | } | |
1190 | ||
1191 | binary_path = lttng_strndup(binary_path_src, LTTNG_SYMBOL_NAME_LEN); | |
1192 | if (!binary_path) { | |
1193 | PERROR("lttng_strndup"); | |
1194 | goto end; | |
1195 | } | |
1196 | ||
1197 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1198 | binary_path, provider_name, probe_name, NULL, false); | |
1199 | if (!(*location)) { | |
1200 | ret = -LTTNG_ERR_INVALID; | |
1201 | goto end; | |
1202 | } | |
1203 | ||
1204 | ret = (int) expected_size; | |
1205 | end: | |
1206 | free(probe_name); | |
1207 | free(provider_name); | |
1208 | free(binary_path); | |
1209 | return ret; | |
1210 | } | |
1211 | ||
1ce46cfe JG |
1212 | static |
1213 | int lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1214 | struct lttng_buffer_view *buffer, | |
1215 | struct lttng_userspace_probe_location_lookup_method **lookup_method) | |
1216 | { | |
1217 | int ret; | |
1218 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1219 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1220 | ||
1221 | assert(buffer); | |
1222 | assert(buffer->data); | |
1223 | assert(lookup_method); | |
1224 | ||
1225 | if (buffer->size < sizeof(*lookup_comm)) { | |
1226 | ret = -LTTNG_ERR_INVALID; | |
1227 | goto end; | |
1228 | } | |
1229 | ||
1230 | lookup_comm = (struct lttng_userspace_probe_location_lookup_method_comm *) | |
1231 | buffer->data; | |
1232 | type = (enum lttng_userspace_probe_location_lookup_method_type) | |
1233 | lookup_comm->type; | |
1234 | switch (type) { | |
1235 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1236 | *lookup_method = NULL; | |
1237 | break; | |
1238 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1239 | *lookup_method = | |
1240 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1241 | if (!(*lookup_method)) { | |
1242 | ret = -LTTNG_ERR_INVALID; | |
1243 | goto end; | |
1244 | } | |
1245 | break; | |
f4d0bb2e FD |
1246 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1247 | *lookup_method = | |
1248 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1249 | if (!(*lookup_method)) { | |
1250 | ret = -LTTNG_ERR_INVALID; | |
1251 | goto end; | |
1252 | } | |
1253 | break; | |
1ce46cfe JG |
1254 | default: |
1255 | ret = -LTTNG_ERR_INVALID; | |
1256 | goto end; | |
1257 | } | |
1258 | ||
1259 | ret = sizeof(*lookup_comm); | |
1260 | end: | |
1261 | return ret; | |
1262 | } | |
1263 | ||
1264 | LTTNG_HIDDEN | |
1265 | int lttng_userspace_probe_location_create_from_buffer( | |
1266 | const struct lttng_buffer_view *buffer, | |
1267 | struct lttng_userspace_probe_location **location) | |
1268 | { | |
1269 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1270 | struct lttng_userspace_probe_location_comm *probe_location_comm; | |
1271 | enum lttng_userspace_probe_location_type type; | |
1272 | struct lttng_buffer_view lookup_method_view; | |
1273 | int consumed = 0; | |
1274 | int ret; | |
1275 | ||
1276 | ||
1277 | assert(buffer); | |
1278 | assert(buffer->data); | |
1279 | assert(location); | |
1280 | ||
1281 | lookup_method = NULL; | |
1282 | ||
1283 | if (buffer->size <= sizeof(*probe_location_comm)) { | |
1284 | ret = -LTTNG_ERR_INVALID; | |
1285 | goto end; | |
1286 | } | |
1287 | ||
1288 | probe_location_comm = | |
1289 | (struct lttng_userspace_probe_location_comm *) buffer->data; | |
1290 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; | |
1291 | consumed += sizeof(*probe_location_comm); | |
1292 | ||
1293 | switch (type) { | |
1294 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1295 | { | |
1296 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1297 | buffer, consumed, buffer->size - consumed); | |
1298 | ||
1299 | ret = lttng_userspace_probe_location_function_create_from_buffer( | |
1300 | &view, location); | |
1301 | if (ret < 0) { | |
1302 | goto end; | |
1303 | } | |
1304 | break; | |
1305 | } | |
f4d0bb2e FD |
1306 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1307 | { | |
1308 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1309 | buffer, consumed, buffer->size - consumed); | |
1310 | ||
1311 | ret = lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1312 | &view, location); | |
1313 | if (ret < 0) { | |
1314 | goto end; | |
1315 | } | |
1316 | break; | |
1317 | } | |
1ce46cfe JG |
1318 | default: |
1319 | ret = -LTTNG_ERR_INVALID; | |
1320 | goto end; | |
1321 | } | |
1322 | ||
1323 | consumed += ret; | |
1324 | if (buffer->size <= consumed) { | |
1325 | ret = -LTTNG_ERR_INVALID; | |
1326 | goto end; | |
1327 | } | |
1328 | ||
1329 | lookup_method_view = lttng_buffer_view_from_view(buffer, consumed, | |
1330 | buffer->size - consumed); | |
1331 | ret = lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1332 | &lookup_method_view, &lookup_method); | |
1333 | if (ret < 0) { | |
1334 | ret = -LTTNG_ERR_INVALID; | |
1335 | goto end; | |
1336 | } | |
1337 | ||
1338 | assert(lookup_method); | |
1339 | (*location)->lookup_method = lookup_method; | |
1340 | lookup_method = NULL; | |
1341 | ret += consumed; | |
1342 | end: | |
1343 | return ret; | |
1344 | } | |
1345 | ||
1346 | LTTNG_HIDDEN | |
1347 | int lttng_userspace_probe_location_function_set_binary_fd( | |
1348 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1349 | { | |
1350 | int ret = 0; | |
1351 | struct lttng_userspace_probe_location_function *function_location; | |
1352 | ||
1353 | assert(location); | |
1354 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1355 | ||
1356 | function_location = container_of(location, | |
1357 | struct lttng_userspace_probe_location_function, parent); | |
1358 | if (function_location->binary_fd >= 0) { | |
1359 | ret = close(function_location->binary_fd); | |
1360 | if (ret) { | |
1361 | PERROR("close"); | |
1362 | ret = -LTTNG_ERR_INVALID; | |
1363 | goto end; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | function_location->binary_fd = binary_fd; | |
1368 | end: | |
1369 | return ret; | |
1370 | } | |
1371 | ||
f4d0bb2e FD |
1372 | LTTNG_HIDDEN |
1373 | int lttng_userspace_probe_location_tracepoint_set_binary_fd( | |
1374 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1375 | { | |
1376 | int ret = 0; | |
1377 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1378 | ||
1379 | assert(location); | |
1380 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
1381 | ||
1382 | tracepoint_location = container_of(location, | |
1383 | struct lttng_userspace_probe_location_tracepoint, parent); | |
1384 | if (tracepoint_location->binary_fd >= 0) { | |
1385 | ret = close(tracepoint_location->binary_fd); | |
1386 | if (ret) { | |
1387 | PERROR("close"); | |
1388 | ret = -LTTNG_ERR_INVALID; | |
1389 | goto end; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | tracepoint_location->binary_fd = binary_fd; | |
1394 | end: | |
1395 | return ret; | |
1396 | } | |
1397 | ||
1ce46cfe JG |
1398 | static |
1399 | int lttng_userspace_probe_location_function_flatten( | |
1400 | const struct lttng_userspace_probe_location *location, | |
1401 | struct lttng_dynamic_buffer *buffer) | |
1402 | { | |
1403 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1404 | struct lttng_userspace_probe_location_function *probe_function; | |
1405 | struct lttng_userspace_probe_location_function flat_probe; | |
1406 | size_t function_name_len, binary_path_len; | |
1407 | size_t padding_needed = 0; | |
1408 | char *flat_probe_start; | |
1409 | int storage_needed = 0; | |
1410 | int ret; | |
1411 | ||
1412 | assert(location); | |
1413 | ||
1414 | if (location->lookup_method && location->lookup_method->type != | |
1415 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1416 | ret = -LTTNG_ERR_INVALID; | |
1417 | goto end; | |
1418 | } | |
1419 | ||
1420 | probe_function = container_of(location, | |
1421 | struct lttng_userspace_probe_location_function, | |
1422 | parent); | |
1423 | assert(probe_function->function_name); | |
1424 | assert(probe_function->binary_path); | |
1425 | ||
1426 | storage_needed += | |
1427 | sizeof(struct lttng_userspace_probe_location_function); | |
1428 | function_name_len = strlen(probe_function->function_name) + 1; | |
1429 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1430 | storage_needed += function_name_len + binary_path_len; | |
1431 | ||
1432 | /* | |
1433 | * The lookup method is aligned to 64-bit within the buffer. | |
1434 | * This is needed even if there is no lookup method since | |
1435 | * the next structure in the buffer probably needs to be | |
1436 | * aligned too (depending on the arch). | |
1437 | */ | |
1438 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1439 | storage_needed += padding_needed; | |
1440 | ||
1441 | if (location->lookup_method) { | |
1442 | /* NOTE: elf look-up method is assumed here. */ | |
1443 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1444 | } | |
1445 | ||
1446 | if (!buffer) { | |
1447 | ret = storage_needed; | |
1448 | goto end; | |
1449 | } | |
1450 | ||
1451 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1452 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1453 | buffer->size + storage_needed); | |
1454 | if (ret) { | |
1455 | goto end; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1460 | ||
1461 | flat_probe_start = buffer->data + buffer->size; | |
1462 | flat_probe.parent.type = location->type; | |
1463 | /* | |
1464 | * The lookup method, if present, is the last element in the flat | |
1465 | * representation of the probe. | |
1466 | */ | |
1467 | if (location->lookup_method) { | |
1468 | flat_probe.parent.lookup_method = | |
1469 | (struct lttng_userspace_probe_location_lookup_method *) | |
1470 | (flat_probe_start + sizeof(flat_probe) + | |
1471 | function_name_len + binary_path_len + padding_needed); | |
1472 | } else { | |
1473 | flat_probe.parent.lookup_method = NULL; | |
1474 | } | |
1475 | ||
1476 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1477 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
1478 | flat_probe.binary_fd = -1; | |
1479 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, | |
1480 | sizeof(flat_probe)); | |
1481 | if (ret) { | |
1482 | goto end; | |
1483 | } | |
1484 | ||
1485 | ret = lttng_dynamic_buffer_append(buffer, | |
1486 | probe_function->function_name, function_name_len); | |
1487 | if (ret) { | |
1488 | goto end; | |
1489 | } | |
1490 | ret = lttng_dynamic_buffer_append(buffer, | |
1491 | probe_function->binary_path, binary_path_len); | |
1492 | if (ret) { | |
1493 | goto end; | |
1494 | } | |
1495 | ||
1496 | /* Insert padding before the lookup method. */ | |
1497 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1498 | buffer->size + padding_needed); | |
1499 | if (ret) { | |
1500 | goto end; | |
1501 | } | |
1502 | ||
1503 | if (!location->lookup_method) { | |
1504 | /* Not an error, the default method is used. */ | |
1505 | ret = storage_needed; | |
1506 | goto end; | |
1507 | } | |
1508 | ||
1509 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1510 | flat_lookup_method.parent.type = | |
1511 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1512 | ret = lttng_dynamic_buffer_append(buffer, | |
1513 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1514 | if (ret) { | |
1515 | goto end; | |
1516 | } | |
1517 | ret = storage_needed; | |
1518 | end: | |
1519 | return ret; | |
1520 | } | |
1521 | ||
f4d0bb2e FD |
1522 | static |
1523 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1524 | const struct lttng_userspace_probe_location *location, | |
1525 | struct lttng_dynamic_buffer *buffer) | |
1526 | { | |
1527 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1528 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1529 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1530 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1531 | size_t padding_needed = 0; | |
1532 | int storage_needed = 0; | |
1533 | char *flat_probe_start; | |
1534 | int ret = 0; | |
1535 | ||
1536 | assert(location); | |
1537 | ||
1538 | /* Only SDT tracepoints are supported at the moment */ | |
1539 | if (location->lookup_method && location->lookup_method->type != | |
1540 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1541 | ret = -LTTNG_ERR_INVALID; | |
1542 | goto end; | |
1543 | } | |
1544 | probe_tracepoint = container_of(location, | |
1545 | struct lttng_userspace_probe_location_tracepoint, | |
1546 | parent); | |
1547 | assert(probe_tracepoint->probe_name); | |
1548 | assert(probe_tracepoint->provider_name); | |
1549 | assert(probe_tracepoint->binary_path); | |
1550 | ||
1551 | /* Compute the storage space needed to flatten the probe location */ | |
1552 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1553 | ||
1554 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1555 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1556 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1557 | ||
1558 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1559 | ||
1560 | /* | |
1561 | * The lookup method is aligned to 64-bit within the buffer. | |
1562 | * This is needed even if there is no lookup method since | |
1563 | * the next structure in the buffer probably needs to be | |
1564 | * aligned too (depending on the arch). | |
1565 | */ | |
1566 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1567 | storage_needed += padding_needed; | |
1568 | ||
1569 | if (location->lookup_method) { | |
1570 | /* NOTE: elf look-up method is assumed here. */ | |
1571 | storage_needed += | |
1572 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1573 | } | |
1574 | ||
1575 | /* | |
1576 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1577 | */ | |
1578 | if (!buffer) { | |
1579 | ret = storage_needed; | |
1580 | goto end; | |
1581 | } | |
1582 | ||
1583 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1584 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1585 | buffer->size + storage_needed); | |
1586 | if (ret) { | |
1587 | goto end; | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1592 | ||
1593 | flat_probe_start = buffer->data + buffer->size; | |
1594 | flat_probe.parent.type = location->type; | |
1595 | ||
1596 | /* | |
1597 | * The lookup method, if present, is the last element in the flat | |
1598 | * representation of the probe. | |
1599 | */ | |
1600 | if (location->lookup_method) { | |
1601 | flat_probe.parent.lookup_method = | |
1602 | (struct lttng_userspace_probe_location_lookup_method *) | |
1603 | (flat_probe_start + sizeof(flat_probe) + | |
1604 | probe_name_len + provider_name_len + | |
1605 | binary_path_len + padding_needed); | |
1606 | } else { | |
1607 | flat_probe.parent.lookup_method = NULL; | |
1608 | } | |
1609 | ||
1610 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1611 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1612 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
1613 | flat_probe.binary_fd = -1; | |
1614 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); | |
1615 | if (ret) { | |
1616 | goto end; | |
1617 | } | |
1618 | ||
1619 | /* Append all the fields to the buffer */ | |
1620 | ret = lttng_dynamic_buffer_append(buffer, | |
1621 | probe_tracepoint->probe_name, probe_name_len); | |
1622 | if (ret) { | |
1623 | goto end; | |
1624 | } | |
1625 | ret = lttng_dynamic_buffer_append(buffer, | |
1626 | probe_tracepoint->provider_name, provider_name_len); | |
1627 | if (ret) { | |
1628 | goto end; | |
1629 | } | |
1630 | ret = lttng_dynamic_buffer_append(buffer, | |
1631 | probe_tracepoint->binary_path, binary_path_len); | |
1632 | if (ret) { | |
1633 | goto end; | |
1634 | } | |
1635 | ||
1636 | /* Insert padding before the lookup method. */ | |
1637 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1638 | if (ret) { | |
1639 | goto end; | |
1640 | } | |
1641 | ||
1642 | if (!location->lookup_method) { | |
1643 | /* Not an error, the default method is used. */ | |
1644 | ret = storage_needed; | |
1645 | goto end; | |
1646 | } | |
1647 | ||
1648 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1649 | ||
1650 | flat_lookup_method.parent.type = | |
1651 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1652 | ret = lttng_dynamic_buffer_append(buffer, | |
1653 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1654 | if (ret) { | |
1655 | goto end; | |
1656 | } | |
1657 | ret = storage_needed; | |
1658 | end: | |
1659 | return ret; | |
1660 | } | |
1661 | ||
1ce46cfe JG |
1662 | LTTNG_HIDDEN |
1663 | int lttng_userspace_probe_location_flatten( | |
1664 | const struct lttng_userspace_probe_location *location, | |
1665 | struct lttng_dynamic_buffer *buffer) | |
1666 | { | |
1667 | int ret; | |
1668 | if (!location) { | |
1669 | ret = -LTTNG_ERR_INVALID; | |
1670 | goto end; | |
1671 | } | |
1672 | ||
1673 | /* Only types currently supported. */ | |
1674 | switch (location->type) { | |
1675 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1676 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1677 | break; | |
f4d0bb2e FD |
1678 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1679 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1680 | break; | |
1ce46cfe JG |
1681 | default: |
1682 | ret = -LTTNG_ERR_INVALID; | |
1683 | goto end; | |
1684 | } | |
1685 | ||
1686 | end: | |
1687 | return ret; | |
1688 | } | |
394357fe FD |
1689 | |
1690 | LTTNG_HIDDEN | |
1691 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1692 | const struct lttng_userspace_probe_location *location) | |
1693 | { | |
1694 | struct lttng_userspace_probe_location *new_location = NULL; | |
1695 | enum lttng_userspace_probe_location_type type; | |
1696 | ||
1697 | if (!location) { | |
1698 | goto err; | |
1699 | } | |
1700 | ||
1701 | type = lttng_userspace_probe_location_get_type(location); | |
1702 | switch (type) { | |
1703 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1704 | new_location = | |
1705 | lttng_userspace_probe_location_function_copy(location); | |
1706 | if (!new_location) { | |
1707 | goto err; | |
1708 | } | |
1709 | break; | |
f4d0bb2e FD |
1710 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1711 | new_location = | |
1712 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1713 | if (!new_location) { | |
1714 | goto err; | |
1715 | } | |
1716 | break; | |
394357fe FD |
1717 | default: |
1718 | new_location = NULL; | |
1719 | goto err; | |
1720 | } | |
1721 | err: | |
1722 | return new_location; | |
1723 | } |