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