Commit | Line | Data |
---|---|---|
1ce46cfe | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
1ce46cfe | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
1ce46cfe | 5 | * |
1ce46cfe JG |
6 | */ |
7 | ||
8 | #include <assert.h> | |
9 | #include <common/error.h> | |
10 | #include <common/macros.h> | |
11 | #include <common/compat/string.h> | |
12 | #include <fcntl.h> | |
13 | #include <lttng/constant.h> | |
14 | #include <lttng/userspace-probe-internal.h> | |
15 | ||
16 | enum lttng_userspace_probe_location_lookup_method_type | |
17 | lttng_userspace_probe_location_lookup_method_get_type( | |
18 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
19 | { | |
20 | return lookup_method ? lookup_method->type : | |
21 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
22 | } | |
23 | ||
24 | void lttng_userspace_probe_location_lookup_method_destroy( | |
25 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
26 | { | |
27 | if (!lookup_method){ | |
28 | return; | |
29 | } | |
30 | ||
5d21f143 | 31 | free(lookup_method); |
1ce46cfe JG |
32 | } |
33 | ||
34 | struct lttng_userspace_probe_location_lookup_method * | |
35 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
36 | { | |
37 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
38 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
39 | ||
40 | elf_method = zmalloc(sizeof(*elf_method)); | |
41 | if (!elf_method) { | |
42 | PERROR("zmalloc"); | |
43 | goto end; | |
44 | } | |
45 | ||
46 | ret = &elf_method->parent; | |
47 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
48 | end: | |
49 | return ret; | |
50 | } | |
51 | ||
f4d0bb2e FD |
52 | struct lttng_userspace_probe_location_lookup_method * |
53 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
54 | { | |
55 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
56 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
57 | ||
58 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
59 | if (!sdt_method) { | |
60 | PERROR("zmalloc"); | |
61 | goto end; | |
62 | } | |
63 | ||
64 | ret = &sdt_method->parent; | |
65 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
66 | end: | |
67 | return ret; | |
68 | } | |
69 | ||
1ce46cfe JG |
70 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
71 | const struct lttng_userspace_probe_location *location) | |
72 | { | |
73 | return location ? location->type : | |
74 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
75 | } | |
76 | ||
77 | static | |
78 | void lttng_userspace_probe_location_function_destroy( | |
79 | struct lttng_userspace_probe_location *location) | |
80 | { | |
81 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
82 | ||
83 | assert(location); | |
84 | ||
85 | location_function = container_of(location, | |
86 | struct lttng_userspace_probe_location_function, parent); | |
87 | ||
88 | assert(location_function); | |
89 | ||
90 | free(location_function->function_name); | |
91 | free(location_function->binary_path); | |
92 | if (location_function->binary_fd >= 0) { | |
93 | if (close(location_function->binary_fd)) { | |
94 | PERROR("close"); | |
95 | } | |
96 | } | |
97 | free(location); | |
98 | } | |
99 | ||
f4d0bb2e FD |
100 | static |
101 | void lttng_userspace_probe_location_tracepoint_destroy( | |
102 | struct lttng_userspace_probe_location *location) | |
103 | { | |
104 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
105 | ||
106 | assert(location); | |
107 | ||
108 | location_tracepoint = container_of(location, | |
109 | struct lttng_userspace_probe_location_tracepoint, | |
110 | parent); | |
111 | ||
112 | assert(location_tracepoint); | |
113 | ||
114 | free(location_tracepoint->probe_name); | |
115 | free(location_tracepoint->provider_name); | |
116 | free(location_tracepoint->binary_path); | |
117 | if (location_tracepoint->binary_fd >= 0) { | |
118 | if (close(location_tracepoint->binary_fd)) { | |
119 | PERROR("close"); | |
120 | } | |
121 | } | |
122 | free(location); | |
123 | } | |
124 | ||
1ce46cfe JG |
125 | void lttng_userspace_probe_location_destroy( |
126 | struct lttng_userspace_probe_location *location) | |
127 | { | |
128 | if (!location) { | |
129 | return; | |
130 | } | |
131 | ||
132 | lttng_userspace_probe_location_lookup_method_destroy( | |
133 | location->lookup_method); | |
134 | ||
135 | switch (location->type) { | |
136 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
137 | lttng_userspace_probe_location_function_destroy(location); | |
138 | break; | |
f4d0bb2e FD |
139 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
140 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
141 | break; | |
1ce46cfe | 142 | default: |
adf53c67 | 143 | abort(); |
1ce46cfe JG |
144 | } |
145 | } | |
146 | ||
147 | static struct lttng_userspace_probe_location * | |
148 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
149 | const char *function_name, | |
150 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
151 | bool open_binary) | |
152 | { | |
153 | int binary_fd = -1; | |
154 | char *function_name_copy = NULL, *binary_path_copy = NULL; | |
155 | struct lttng_userspace_probe_location *ret = NULL; | |
156 | struct lttng_userspace_probe_location_function *location; | |
157 | ||
158 | if (open_binary) { | |
159 | binary_fd = open(binary_path, O_RDONLY); | |
160 | if (binary_fd < 0) { | |
161 | PERROR("Error opening the binary"); | |
162 | goto error; | |
163 | } | |
164 | } else { | |
165 | binary_fd = -1; | |
166 | } | |
167 | ||
168 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
169 | if (!function_name_copy) { | |
170 | PERROR("Error duplicating the function name"); | |
171 | goto error; | |
172 | } | |
173 | ||
174 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
175 | if (!binary_path_copy) { | |
176 | PERROR("Error duplicating the function name"); | |
177 | goto error; | |
178 | } | |
179 | ||
180 | location = zmalloc(sizeof(*location)); | |
181 | if (!location) { | |
182 | PERROR("Error allocating userspace probe location"); | |
183 | goto error; | |
184 | } | |
185 | ||
186 | location->function_name = function_name_copy; | |
187 | location->binary_path = binary_path_copy; | |
188 | location->binary_fd = binary_fd; | |
9d3981b5 JG |
189 | location->instrumentation_type = |
190 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
191 | |
192 | ret = &location->parent; | |
193 | ret->lookup_method = lookup_method; | |
194 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
195 | goto end; | |
196 | ||
197 | error: | |
198 | free(function_name_copy); | |
199 | free(binary_path_copy); | |
200 | if (binary_fd >= 0) { | |
201 | if (close(binary_fd)) { | |
202 | PERROR("Error closing binary fd in error path"); | |
203 | } | |
204 | } | |
205 | end: | |
206 | return ret; | |
207 | } | |
208 | ||
f4d0bb2e FD |
209 | static struct lttng_userspace_probe_location * |
210 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
211 | const char *provider_name, const char *probe_name, | |
212 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
213 | bool open_binary) | |
214 | { | |
215 | int binary_fd = -1; | |
216 | char *probe_name_copy = NULL; | |
217 | char *provider_name_copy = NULL; | |
218 | char *binary_path_copy = NULL; | |
219 | struct lttng_userspace_probe_location *ret = NULL; | |
220 | struct lttng_userspace_probe_location_tracepoint *location; | |
221 | ||
222 | if (open_binary) { | |
223 | binary_fd = open(binary_path, O_RDONLY); | |
224 | if (binary_fd < 0) { | |
225 | PERROR("open"); | |
226 | goto error; | |
227 | } | |
228 | } else { | |
229 | binary_fd = -1; | |
230 | } | |
231 | ||
232 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
233 | if (!probe_name_copy) { | |
234 | PERROR("lttng_strndup"); | |
235 | goto error; | |
236 | } | |
237 | ||
238 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
239 | if (!provider_name_copy) { | |
240 | PERROR("lttng_strndup"); | |
241 | goto error; | |
242 | } | |
243 | ||
244 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
245 | if (!binary_path_copy) { | |
246 | PERROR("lttng_strndup"); | |
247 | goto error; | |
248 | } | |
249 | ||
250 | location = zmalloc(sizeof(*location)); | |
251 | if (!location) { | |
252 | PERROR("zmalloc"); | |
253 | goto error; | |
254 | } | |
255 | ||
256 | location->probe_name = probe_name_copy; | |
257 | location->provider_name = provider_name_copy; | |
258 | location->binary_path = binary_path_copy; | |
259 | location->binary_fd = binary_fd; | |
260 | ||
261 | ret = &location->parent; | |
262 | ret->lookup_method = lookup_method; | |
263 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
264 | goto end; | |
265 | ||
266 | error: | |
267 | free(probe_name_copy); | |
268 | free(provider_name_copy); | |
7c86453b | 269 | free(binary_path_copy); |
f4d0bb2e FD |
270 | if (binary_fd >= 0) { |
271 | if (close(binary_fd)) { | |
272 | PERROR("Error closing binary fd in error path"); | |
273 | } | |
274 | } | |
275 | end: | |
276 | return ret; | |
277 | } | |
278 | ||
1ce46cfe JG |
279 | struct lttng_userspace_probe_location * |
280 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
281 | const char *function_name, | |
282 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
283 | { | |
284 | struct lttng_userspace_probe_location *ret = NULL; | |
285 | ||
286 | if (!binary_path || !function_name) { | |
287 | ERR("Invalid argument(s)"); | |
288 | goto end; | |
289 | } | |
290 | ||
291 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
292 | lookup_method)) { | |
293 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
294 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
295 | break; | |
296 | default: | |
297 | /* Invalid probe location lookup method. */ | |
298 | goto end; | |
299 | } | |
300 | ||
301 | ret = lttng_userspace_probe_location_function_create_no_check( | |
302 | binary_path, function_name, lookup_method, true); | |
303 | end: | |
304 | return ret; | |
305 | } | |
306 | ||
f4d0bb2e FD |
307 | struct lttng_userspace_probe_location * |
308 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
309 | const char *provider_name, const char *probe_name, | |
310 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
311 | { | |
312 | struct lttng_userspace_probe_location *ret = NULL; | |
313 | ||
314 | if (!binary_path || !probe_name || !provider_name) { | |
315 | ERR("Invalid argument(s)"); | |
316 | goto end; | |
317 | } | |
318 | ||
319 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
320 | lookup_method)) { | |
321 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
322 | break; | |
323 | default: | |
324 | /* Invalid probe location lookup method. */ | |
325 | goto end; | |
326 | } | |
327 | ||
328 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
329 | binary_path, provider_name, probe_name, lookup_method, true); | |
330 | end: | |
331 | return ret; | |
332 | } | |
333 | ||
394357fe FD |
334 | static struct lttng_userspace_probe_location_lookup_method * |
335 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
336 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
337 | { | |
338 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
339 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
340 | ||
341 | assert(lookup_method); | |
342 | assert(lookup_method->type == | |
343 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); | |
344 | ||
345 | elf_method = zmalloc(sizeof(*elf_method)); | |
346 | if (!elf_method) { | |
347 | PERROR("Error allocating ELF userspace probe lookup method"); | |
348 | goto error; | |
349 | } | |
350 | ||
351 | elf_method->parent.type = lookup_method->type; | |
352 | parent = &elf_method->parent; | |
353 | ||
354 | goto end; | |
355 | error: | |
356 | parent = NULL; | |
357 | end: | |
358 | return parent; | |
359 | } | |
360 | ||
f4d0bb2e FD |
361 | static struct lttng_userspace_probe_location_lookup_method * |
362 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
363 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
364 | { | |
365 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
366 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
367 | ||
368 | assert(lookup_method); | |
369 | assert(lookup_method->type == | |
370 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); | |
371 | ||
372 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
373 | if (!sdt_method) { | |
374 | PERROR("zmalloc"); | |
375 | goto error; | |
376 | } | |
377 | ||
378 | sdt_method->parent.type = lookup_method->type; | |
379 | parent = &sdt_method->parent; | |
380 | ||
381 | goto end; | |
382 | ||
383 | error: | |
384 | parent = NULL; | |
385 | end: | |
386 | return parent; | |
387 | } | |
388 | ||
394357fe FD |
389 | static struct lttng_userspace_probe_location * |
390 | lttng_userspace_probe_location_function_copy( | |
391 | const struct lttng_userspace_probe_location *location) | |
392 | { | |
393 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
394 | struct lttng_userspace_probe_location *new_location = NULL; | |
395 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
396 | const char *binary_path = NULL; |
397 | const char *function_name = NULL; | |
d7ee7196 | 398 | int fd, new_fd; |
394357fe FD |
399 | |
400 | assert(location); | |
401 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
402 | ||
cc831309 FD |
403 | /* Get probe location fields */ |
404 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 405 | if (!binary_path) { |
cc831309 | 406 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
407 | goto error; |
408 | } | |
409 | ||
cc831309 | 410 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 411 | if (!function_name) { |
cc831309 | 412 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
413 | goto error; |
414 | } | |
415 | ||
166fc586 JR |
416 | /* |
417 | * Duplicate the binary fd if possible. The binary fd can be -1 on | |
418 | * listing | |
419 | */ | |
d7ee7196 | 420 | fd = lttng_userspace_probe_location_function_get_binary_fd(location); |
166fc586 JR |
421 | if (fd > -1) { |
422 | new_fd = dup(fd); | |
423 | if (new_fd == -1) { | |
424 | PERROR("Error duplicating file descriptor to binary"); | |
425 | goto error; | |
426 | } | |
427 | } else { | |
428 | /* The original fd is not set. */ | |
429 | new_fd = -1; | |
394357fe FD |
430 | } |
431 | ||
432 | /* | |
433 | * Duplicate probe location method fields | |
434 | */ | |
435 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
436 | location->lookup_method); | |
437 | switch (lookup_type) { | |
438 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
439 | lookup_method = | |
440 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
441 | location->lookup_method); | |
442 | if (!lookup_method) { | |
443 | goto close_fd; | |
444 | } | |
445 | break; | |
446 | default: | |
447 | /* Invalid probe location lookup method. */ | |
448 | goto close_fd; | |
449 | } | |
450 | ||
451 | /* Create the probe_location */ | |
452 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 453 | binary_path, function_name, lookup_method, false); |
394357fe FD |
454 | if (!new_location) { |
455 | goto destroy_lookup_method; | |
456 | } | |
457 | ||
458 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 459 | if (lttng_userspace_probe_location_function_set_binary_fd(new_location, new_fd) < 0) { |
394357fe FD |
460 | goto destroy_probe_location; |
461 | } | |
462 | ||
463 | goto end; | |
464 | ||
465 | destroy_probe_location: | |
466 | lttng_userspace_probe_location_destroy(new_location); | |
467 | destroy_lookup_method: | |
468 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
469 | close_fd: | |
d7ee7196 | 470 | if (close(new_fd) < 0) { |
394357fe FD |
471 | PERROR("Error closing duplicated file descriptor in error path"); |
472 | } | |
473 | error: | |
394357fe FD |
474 | new_location = NULL; |
475 | end: | |
476 | return new_location; | |
477 | } | |
478 | ||
f4d0bb2e FD |
479 | static struct lttng_userspace_probe_location * |
480 | lttng_userspace_probe_location_tracepoint_copy( | |
481 | const struct lttng_userspace_probe_location *location) | |
482 | { | |
483 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
484 | struct lttng_userspace_probe_location *new_location = NULL; | |
485 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
486 | const char *binary_path = NULL; |
487 | const char *probe_name = NULL; | |
488 | const char *provider_name = NULL; | |
d7ee7196 | 489 | int fd, new_fd; |
f4d0bb2e FD |
490 | |
491 | assert(location); | |
492 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
493 | ||
cc831309 FD |
494 | /* Get probe location fields */ |
495 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); | |
f4d0bb2e | 496 | if (!binary_path) { |
cc831309 | 497 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
498 | goto error; |
499 | } | |
500 | ||
cc831309 | 501 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 502 | if (!probe_name) { |
cc831309 | 503 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
504 | goto error; |
505 | } | |
506 | ||
cc831309 | 507 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 508 | if (!provider_name) { |
cc831309 | 509 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
510 | goto error; |
511 | } | |
512 | ||
513 | /* Duplicate the binary fd */ | |
d7ee7196 | 514 | fd = lttng_userspace_probe_location_tracepoint_get_binary_fd(location); |
166fc586 JR |
515 | if (fd > -1) { |
516 | new_fd = dup(fd); | |
517 | if (new_fd == -1) { | |
518 | PERROR("Error duplicating file descriptor to binary"); | |
519 | goto error; | |
520 | } | |
521 | } else { | |
522 | /* The original fd is not set. */ | |
523 | new_fd = -1; | |
f4d0bb2e FD |
524 | } |
525 | ||
526 | /* | |
527 | * Duplicate probe location method fields | |
528 | */ | |
529 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
530 | location->lookup_method); | |
531 | switch (lookup_type) { | |
532 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
533 | lookup_method = | |
534 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
535 | location->lookup_method); | |
536 | if (!lookup_method) { | |
537 | goto close_fd; | |
538 | } | |
539 | break; | |
540 | default: | |
541 | /* Invalid probe location lookup method. */ | |
542 | goto close_fd; | |
543 | } | |
544 | ||
545 | /* Create the probe_location */ | |
546 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 547 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
548 | if (!new_location) { |
549 | goto destroy_lookup_method; | |
550 | } | |
551 | ||
552 | /* Set the duplicated fd to the new probe_location */ | |
d7ee7196 | 553 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd(new_location, new_fd) < 0) { |
f4d0bb2e FD |
554 | goto destroy_probe_location; |
555 | } | |
556 | ||
557 | goto end; | |
558 | ||
559 | destroy_probe_location: | |
560 | lttng_userspace_probe_location_destroy(new_location); | |
561 | destroy_lookup_method: | |
562 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
563 | close_fd: | |
d7ee7196 | 564 | if (close(new_fd) < 0) { |
cc831309 | 565 | PERROR("Error closing duplicated file descriptor in error path"); |
f4d0bb2e FD |
566 | } |
567 | error: | |
f4d0bb2e FD |
568 | new_location = NULL; |
569 | end: | |
570 | return new_location; | |
571 | } | |
572 | ||
1ce46cfe JG |
573 | const char *lttng_userspace_probe_location_function_get_binary_path( |
574 | const struct lttng_userspace_probe_location *location) | |
575 | { | |
576 | const char *ret = NULL; | |
577 | struct lttng_userspace_probe_location_function *function_location; | |
578 | ||
579 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
580 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
581 | ERR("Invalid argument(s)"); | |
582 | goto end; | |
583 | } | |
584 | ||
585 | function_location = container_of(location, | |
586 | struct lttng_userspace_probe_location_function, | |
587 | parent); | |
588 | ret = function_location->binary_path; | |
589 | end: | |
590 | return ret; | |
591 | } | |
592 | ||
f4d0bb2e FD |
593 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
594 | const struct lttng_userspace_probe_location *location) | |
595 | { | |
596 | const char *ret = NULL; | |
597 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
598 | ||
599 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
600 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
601 | ERR("Invalid argument(s)"); | |
602 | goto end; | |
603 | } | |
604 | ||
605 | tracepoint_location = container_of(location, | |
606 | struct lttng_userspace_probe_location_tracepoint, | |
607 | parent); | |
608 | ret = tracepoint_location->binary_path; | |
609 | end: | |
610 | return ret; | |
611 | } | |
612 | ||
1ce46cfe JG |
613 | const char *lttng_userspace_probe_location_function_get_function_name( |
614 | const struct lttng_userspace_probe_location *location) | |
615 | { | |
616 | const char *ret = NULL; | |
617 | struct lttng_userspace_probe_location_function *function_location; | |
618 | ||
619 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
620 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
621 | ERR("Invalid argument(s)"); | |
622 | goto end; | |
623 | } | |
624 | ||
625 | function_location = container_of(location, | |
626 | struct lttng_userspace_probe_location_function, parent); | |
627 | ret = function_location->function_name; | |
628 | end: | |
629 | return ret; | |
630 | } | |
631 | ||
f4d0bb2e FD |
632 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
633 | const struct lttng_userspace_probe_location *location) | |
634 | { | |
635 | const char *ret = NULL; | |
636 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
637 | ||
638 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
639 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
640 | ERR("Invalid argument(s)"); | |
641 | goto end; | |
642 | } | |
643 | ||
644 | tracepoint_location = container_of(location, | |
645 | struct lttng_userspace_probe_location_tracepoint, parent); | |
646 | ret = tracepoint_location->probe_name; | |
647 | end: | |
648 | return ret; | |
649 | } | |
650 | ||
651 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
652 | const struct lttng_userspace_probe_location *location) | |
653 | { | |
654 | const char *ret = NULL; | |
655 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
656 | ||
657 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
658 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
659 | ERR("Invalid argument(s)"); | |
660 | goto end; | |
661 | } | |
662 | ||
663 | tracepoint_location = container_of(location, | |
664 | struct lttng_userspace_probe_location_tracepoint, parent); | |
665 | ret = tracepoint_location->provider_name; | |
666 | end: | |
667 | return ret; | |
668 | } | |
669 | ||
1ce46cfe JG |
670 | int lttng_userspace_probe_location_function_get_binary_fd( |
671 | const struct lttng_userspace_probe_location *location) | |
672 | { | |
673 | int ret = -1; | |
674 | struct lttng_userspace_probe_location_function *function_location; | |
675 | ||
676 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
677 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
678 | ERR("Invalid argument(s)"); | |
679 | goto end; | |
680 | } | |
681 | ||
682 | function_location = container_of(location, | |
683 | struct lttng_userspace_probe_location_function, parent); | |
684 | ret = function_location->binary_fd; | |
685 | end: | |
686 | return ret; | |
687 | } | |
688 | ||
9d3981b5 JG |
689 | enum lttng_userspace_probe_location_function_instrumentation_type |
690 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
691 | const struct lttng_userspace_probe_location *location) | |
692 | { | |
693 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
694 | struct lttng_userspace_probe_location_function *function_location; | |
695 | ||
696 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
697 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
698 | ERR("Invalid argument(s)"); | |
699 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; | |
700 | goto end; | |
701 | } | |
702 | ||
703 | function_location = container_of(location, | |
704 | struct lttng_userspace_probe_location_function, parent); | |
705 | type = function_location->instrumentation_type; | |
706 | end: | |
707 | return type; | |
708 | } | |
709 | ||
710 | enum lttng_userspace_probe_location_status | |
711 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
712 | const struct lttng_userspace_probe_location *location, | |
713 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
714 | { | |
715 | enum lttng_userspace_probe_location_status status = | |
716 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
717 | struct lttng_userspace_probe_location_function *function_location; | |
718 | ||
719 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
720 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
721 | instrumentation_type != | |
722 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
723 | ERR("Invalid argument(s)"); | |
724 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; | |
725 | goto end; | |
726 | } | |
727 | ||
728 | function_location = container_of(location, | |
729 | struct lttng_userspace_probe_location_function, parent); | |
730 | function_location->instrumentation_type = instrumentation_type; | |
731 | end: | |
732 | return status; | |
733 | } | |
734 | ||
f4d0bb2e FD |
735 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
736 | const struct lttng_userspace_probe_location *location) | |
737 | { | |
738 | int ret = -1; | |
739 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
740 | ||
741 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
742 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
743 | ERR("Invalid argument(s)"); | |
744 | goto end; | |
745 | } | |
746 | ||
747 | tracepoint_location = container_of(location, | |
748 | struct lttng_userspace_probe_location_tracepoint, parent); | |
749 | ret = tracepoint_location->binary_fd; | |
750 | end: | |
751 | return ret; | |
752 | } | |
753 | ||
1ce46cfe JG |
754 | static struct lttng_userspace_probe_location_lookup_method * |
755 | lttng_userspace_probe_location_function_get_lookup_method( | |
756 | const struct lttng_userspace_probe_location *location) | |
757 | { | |
758 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
759 | ||
760 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
761 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
762 | ERR("Invalid argument(s)"); | |
763 | goto end; | |
764 | } | |
765 | ||
766 | ret = location->lookup_method; | |
767 | end: | |
768 | return ret; | |
769 | } | |
770 | ||
f4d0bb2e FD |
771 | static struct lttng_userspace_probe_location_lookup_method * |
772 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
773 | const struct lttng_userspace_probe_location *location) | |
774 | { | |
775 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
776 | ||
777 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
778 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
779 | ERR("Invalid argument(s)"); | |
780 | goto end; | |
781 | } | |
782 | ||
783 | ret = location->lookup_method; | |
784 | end: | |
785 | return ret; | |
786 | } | |
787 | ||
87597c2c | 788 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
789 | lttng_userspace_probe_location_get_lookup_method( |
790 | const struct lttng_userspace_probe_location *location) | |
791 | { | |
792 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
793 | ||
794 | assert(location); | |
795 | switch (location->type) { | |
796 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
797 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
798 | location); | |
799 | break; | |
f4d0bb2e FD |
800 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
801 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
802 | location); | |
803 | break; | |
1ce46cfe JG |
804 | default: |
805 | ERR("Unknowned lookup method."); | |
806 | break; | |
807 | } | |
808 | return ret; | |
809 | } | |
810 | ||
811 | static | |
812 | int lttng_userspace_probe_location_lookup_method_serialize( | |
813 | struct lttng_userspace_probe_location_lookup_method *method, | |
814 | struct lttng_dynamic_buffer *buffer) | |
815 | { | |
816 | int ret; | |
817 | struct lttng_userspace_probe_location_lookup_method_comm | |
818 | lookup_method_comm; | |
819 | ||
820 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
821 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
822 | if (buffer) { | |
823 | ret = lttng_dynamic_buffer_append(buffer, &lookup_method_comm, | |
824 | sizeof(lookup_method_comm)); | |
825 | if (ret) { | |
826 | goto end; | |
827 | } | |
828 | } | |
f4d0bb2e FD |
829 | ret = sizeof(lookup_method_comm); |
830 | end: | |
831 | return ret; | |
832 | } | |
833 | ||
834 | static | |
835 | int lttng_userspace_probe_location_function_serialize( | |
836 | const struct lttng_userspace_probe_location *location, | |
837 | struct lttng_dynamic_buffer *buffer, | |
838 | int *binary_fd) | |
839 | { | |
840 | int ret; | |
841 | size_t function_name_len, binary_path_len; | |
842 | struct lttng_userspace_probe_location_function *location_function; | |
843 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
844 | ||
845 | assert(location); | |
846 | assert(lttng_userspace_probe_location_get_type(location) == | |
847 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
848 | ||
849 | location_function = container_of(location, | |
850 | struct lttng_userspace_probe_location_function, | |
851 | parent); | |
852 | if (!location_function->function_name || !location_function->binary_path) { | |
853 | ret = -LTTNG_ERR_INVALID; | |
854 | goto end; | |
855 | } | |
856 | ||
857 | if (binary_fd && location_function->binary_fd < 0) { | |
858 | ret = -LTTNG_ERR_INVALID; | |
859 | goto end; | |
860 | } | |
861 | ||
862 | if (binary_fd) { | |
863 | *binary_fd = location_function->binary_fd; | |
864 | } | |
865 | ||
866 | function_name_len = strlen(location_function->function_name); | |
867 | if (function_name_len == 0) { | |
868 | ret = -LTTNG_ERR_INVALID; | |
869 | goto end; | |
870 | } | |
871 | binary_path_len = strlen(location_function->binary_path); | |
872 | if (binary_path_len == 0) { | |
873 | ret = -LTTNG_ERR_INVALID; | |
874 | goto end; | |
875 | } | |
876 | ||
877 | location_function_comm.function_name_len = function_name_len + 1; | |
878 | location_function_comm.binary_path_len = binary_path_len + 1; | |
879 | ||
880 | if (buffer) { | |
881 | ret = lttng_dynamic_buffer_append(buffer, | |
882 | &location_function_comm, | |
883 | sizeof(location_function_comm)); | |
884 | if (ret) { | |
885 | ret = -LTTNG_ERR_INVALID; | |
886 | goto end; | |
887 | } | |
888 | ret = lttng_dynamic_buffer_append(buffer, | |
889 | location_function->function_name, | |
890 | location_function_comm.function_name_len); | |
891 | if (ret) { | |
892 | ret = -LTTNG_ERR_INVALID; | |
893 | goto end; | |
894 | } | |
895 | ret = lttng_dynamic_buffer_append(buffer, | |
896 | location_function->binary_path, | |
897 | location_function_comm.binary_path_len); | |
898 | if (ret) { | |
899 | ret = -LTTNG_ERR_INVALID; | |
900 | goto end; | |
901 | } | |
902 | } | |
903 | ret = sizeof(location_function_comm) + | |
904 | location_function_comm.function_name_len + | |
905 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
906 | end: |
907 | return ret; | |
908 | } | |
909 | ||
910 | static | |
f4d0bb2e | 911 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe JG |
912 | const struct lttng_userspace_probe_location *location, |
913 | struct lttng_dynamic_buffer *buffer, | |
914 | int *binary_fd) | |
915 | { | |
916 | int ret; | |
f4d0bb2e FD |
917 | size_t probe_name_len, provider_name_len, binary_path_len; |
918 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
919 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe JG |
920 | |
921 | assert(location); | |
922 | assert(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 923 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 924 | |
f4d0bb2e FD |
925 | location_tracepoint = container_of(location, |
926 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 927 | parent); |
f4d0bb2e FD |
928 | if (!location_tracepoint->probe_name || |
929 | !location_tracepoint->provider_name || | |
930 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
931 | ret = -LTTNG_ERR_INVALID; |
932 | goto end; | |
933 | } | |
934 | ||
f4d0bb2e | 935 | if (binary_fd && location_tracepoint->binary_fd < 0) { |
1ce46cfe JG |
936 | ret = -LTTNG_ERR_INVALID; |
937 | goto end; | |
938 | } | |
939 | ||
940 | if (binary_fd) { | |
f4d0bb2e | 941 | *binary_fd = location_tracepoint->binary_fd; |
1ce46cfe JG |
942 | } |
943 | ||
f4d0bb2e FD |
944 | probe_name_len = strlen(location_tracepoint->probe_name); |
945 | if (probe_name_len == 0) { | |
1ce46cfe JG |
946 | ret = -LTTNG_ERR_INVALID; |
947 | goto end; | |
948 | } | |
f4d0bb2e FD |
949 | |
950 | provider_name_len = strlen(location_tracepoint->provider_name); | |
951 | if (provider_name_len == 0) { | |
952 | ret = -LTTNG_ERR_INVALID; | |
953 | goto end; | |
954 | } | |
955 | ||
956 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
957 | if (binary_path_len == 0) { |
958 | ret = -LTTNG_ERR_INVALID; | |
959 | goto end; | |
960 | } | |
961 | ||
f4d0bb2e FD |
962 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
963 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
964 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe JG |
965 | |
966 | if (buffer) { | |
967 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
968 | &location_tracepoint_comm, |
969 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
970 | if (ret) { |
971 | ret = -LTTNG_ERR_INVALID; | |
972 | goto end; | |
973 | } | |
974 | ret = lttng_dynamic_buffer_append(buffer, | |
f4d0bb2e FD |
975 | location_tracepoint->probe_name, |
976 | location_tracepoint_comm.probe_name_len); | |
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->provider_name, |
983 | location_tracepoint_comm.provider_name_len); | |
984 | if (ret) { | |
985 | ret = -LTTNG_ERR_INVALID; | |
986 | goto end; | |
987 | } | |
988 | ret = lttng_dynamic_buffer_append(buffer, | |
989 | location_tracepoint->binary_path, | |
990 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
991 | if (ret) { |
992 | ret = -LTTNG_ERR_INVALID; | |
993 | goto end; | |
994 | } | |
995 | } | |
f4d0bb2e FD |
996 | ret = sizeof(location_tracepoint_comm) + |
997 | location_tracepoint_comm.probe_name_len + | |
998 | location_tracepoint_comm.provider_name_len + | |
999 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1000 | end: |
1001 | return ret; | |
1002 | } | |
1003 | ||
1004 | LTTNG_HIDDEN | |
1005 | int lttng_userspace_probe_location_serialize( | |
1006 | const struct lttng_userspace_probe_location *location, | |
1007 | struct lttng_dynamic_buffer *buffer, | |
1008 | int *binary_fd) | |
1009 | { | |
1010 | int ret, buffer_use = 0; | |
1011 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1012 | ||
1013 | if (!location) { | |
1014 | ERR("Invalid argument(s)"); | |
1015 | ret = -LTTNG_ERR_INVALID; | |
1016 | goto end; | |
1017 | } | |
1018 | ||
56f0bc67 JG |
1019 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1020 | ||
1ce46cfe JG |
1021 | location_generic_comm.type = (int8_t) location->type; |
1022 | if (buffer) { | |
1023 | ret = lttng_dynamic_buffer_append(buffer, &location_generic_comm, | |
1024 | sizeof(location_generic_comm)); | |
1025 | if (ret) { | |
1026 | goto end; | |
1027 | } | |
1028 | } | |
1029 | buffer_use += sizeof(location_generic_comm); | |
1030 | ||
1031 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1032 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1033 | ret = lttng_userspace_probe_location_function_serialize( | |
1034 | location, buffer, binary_fd); | |
1035 | break; | |
f4d0bb2e FD |
1036 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1037 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
1038 | location, buffer, binary_fd); | |
1039 | break; | |
1ce46cfe JG |
1040 | default: |
1041 | ERR("Unsupported probe location type"); | |
1042 | ret = -LTTNG_ERR_INVALID; | |
1043 | goto end; | |
1044 | } | |
1045 | if (ret < 0) { | |
1046 | goto end; | |
1047 | } | |
1048 | buffer_use += ret; | |
1049 | ||
1050 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
1051 | location->lookup_method, buffer); | |
1052 | if (ret < 0) { | |
1053 | goto end; | |
1054 | } | |
1055 | ret += buffer_use; | |
1056 | end: | |
1057 | return ret; | |
1058 | } | |
1059 | ||
1060 | static | |
1061 | int lttng_userspace_probe_location_function_create_from_buffer( | |
1062 | const struct lttng_buffer_view *buffer, | |
1063 | struct lttng_userspace_probe_location **location) | |
1064 | { | |
1065 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1066 | const char *function_name_src, *binary_path_src; | |
1067 | char *function_name = NULL, *binary_path = NULL; | |
1068 | int ret = 0; | |
1069 | ||
1070 | assert(buffer); | |
1071 | assert(buffer->data); | |
1072 | assert(location); | |
1073 | ||
1074 | location_function_comm = | |
1075 | (struct lttng_userspace_probe_location_function_comm *) buffer->data; | |
1076 | ||
1077 | const size_t expected_size = sizeof(*location_function_comm) + | |
1078 | location_function_comm->function_name_len + | |
1079 | location_function_comm->binary_path_len; | |
1080 | ||
1081 | if (buffer->size < expected_size) { | |
1082 | ret = -LTTNG_ERR_INVALID; | |
1083 | goto end; | |
1084 | } | |
1085 | ||
1086 | function_name_src = buffer->data + sizeof(*location_function_comm); | |
1087 | binary_path_src = function_name_src + | |
1088 | location_function_comm->function_name_len; | |
1089 | ||
1090 | if (function_name_src[location_function_comm->function_name_len - 1] != '\0') { | |
1091 | ret = -LTTNG_ERR_INVALID; | |
1092 | goto end; | |
1093 | } | |
1094 | if (binary_path_src[location_function_comm->binary_path_len - 1] != '\0') { | |
1095 | ret = -LTTNG_ERR_INVALID; | |
1096 | goto end; | |
1097 | } | |
1098 | ||
1099 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1100 | if (!function_name) { | |
1101 | PERROR("lttng_strndup"); | |
ded5877b | 1102 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1103 | goto end; |
1104 | } | |
1105 | ||
1106 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1107 | if (!binary_path) { | |
1108 | PERROR("lttng_strndup"); | |
ded5877b | 1109 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1110 | goto end; |
1111 | } | |
1112 | ||
1113 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1114 | binary_path, function_name, NULL, false); | |
1115 | if (!(*location)) { | |
1116 | ret = -LTTNG_ERR_INVALID; | |
1117 | goto end; | |
1118 | } | |
1119 | ||
1120 | ret = (int) expected_size; | |
1121 | end: | |
1122 | free(function_name); | |
1123 | free(binary_path); | |
1124 | return ret; | |
1125 | } | |
1126 | ||
f4d0bb2e FD |
1127 | static |
1128 | int lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1129 | const struct lttng_buffer_view *buffer, | |
1130 | struct lttng_userspace_probe_location **location) | |
1131 | { | |
1132 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1133 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1134 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1135 | int ret = 0; | |
1136 | ||
1137 | assert(buffer); | |
1138 | assert(buffer->data); | |
1139 | assert(location); | |
1140 | ||
1141 | location_tracepoint_comm = | |
1142 | (struct lttng_userspace_probe_location_tracepoint_comm *) buffer->data; | |
1143 | ||
1144 | const size_t expected_size = sizeof(*location_tracepoint_comm) + | |
1145 | location_tracepoint_comm->probe_name_len + | |
1146 | location_tracepoint_comm->provider_name_len + | |
1147 | location_tracepoint_comm->binary_path_len; | |
1148 | ||
1149 | if (buffer->size < expected_size) { | |
1150 | ret = -LTTNG_ERR_INVALID; | |
1151 | goto end; | |
1152 | } | |
1153 | ||
1154 | probe_name_src = buffer->data + sizeof(*location_tracepoint_comm); | |
1155 | provider_name_src = probe_name_src + | |
1156 | location_tracepoint_comm->probe_name_len; | |
1157 | binary_path_src = provider_name_src + | |
1158 | location_tracepoint_comm->provider_name_len; | |
1159 | ||
1160 | if (probe_name_src[location_tracepoint_comm->probe_name_len - 1] != '\0') { | |
1161 | ret = -LTTNG_ERR_INVALID; | |
1162 | goto end; | |
1163 | } | |
1164 | ||
1165 | if (provider_name_src[location_tracepoint_comm->provider_name_len - 1] != '\0') { | |
1166 | ret = -LTTNG_ERR_INVALID; | |
1167 | goto end; | |
1168 | } | |
1169 | ||
1170 | if (binary_path_src[location_tracepoint_comm->binary_path_len - 1] != '\0') { | |
1171 | ret = -LTTNG_ERR_INVALID; | |
1172 | goto end; | |
1173 | } | |
1174 | ||
1175 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1176 | if (!probe_name) { | |
9e6c156f JG |
1177 | PERROR("Failed to allocate probe name"); |
1178 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1179 | goto end; |
1180 | } | |
1181 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1182 | if (!provider_name) { | |
9e6c156f JG |
1183 | PERROR("Failed to allocate provider name"); |
1184 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1185 | goto end; |
1186 | } | |
1187 | ||
94c21ac9 | 1188 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); |
f4d0bb2e | 1189 | if (!binary_path) { |
9e6c156f JG |
1190 | PERROR("Failed to allocate binary path"); |
1191 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1192 | goto end; |
1193 | } | |
1194 | ||
1195 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1196 | binary_path, provider_name, probe_name, NULL, false); | |
1197 | if (!(*location)) { | |
1198 | ret = -LTTNG_ERR_INVALID; | |
1199 | goto end; | |
1200 | } | |
1201 | ||
1202 | ret = (int) expected_size; | |
1203 | end: | |
1204 | free(probe_name); | |
1205 | free(provider_name); | |
1206 | free(binary_path); | |
1207 | return ret; | |
1208 | } | |
1209 | ||
1ce46cfe JG |
1210 | static |
1211 | int lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1212 | struct lttng_buffer_view *buffer, | |
1213 | struct lttng_userspace_probe_location_lookup_method **lookup_method) | |
1214 | { | |
1215 | int ret; | |
1216 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1217 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1218 | ||
1219 | assert(buffer); | |
1220 | assert(buffer->data); | |
1221 | assert(lookup_method); | |
1222 | ||
1223 | if (buffer->size < sizeof(*lookup_comm)) { | |
1224 | ret = -LTTNG_ERR_INVALID; | |
1225 | goto end; | |
1226 | } | |
1227 | ||
1228 | lookup_comm = (struct lttng_userspace_probe_location_lookup_method_comm *) | |
1229 | buffer->data; | |
1230 | type = (enum lttng_userspace_probe_location_lookup_method_type) | |
1231 | lookup_comm->type; | |
1232 | switch (type) { | |
1233 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1234 | *lookup_method = NULL; | |
1235 | break; | |
1236 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1237 | *lookup_method = | |
1238 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1239 | if (!(*lookup_method)) { | |
1240 | ret = -LTTNG_ERR_INVALID; | |
1241 | goto end; | |
1242 | } | |
1243 | break; | |
f4d0bb2e FD |
1244 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1245 | *lookup_method = | |
1246 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1247 | if (!(*lookup_method)) { | |
1248 | ret = -LTTNG_ERR_INVALID; | |
1249 | goto end; | |
1250 | } | |
1251 | break; | |
1ce46cfe JG |
1252 | default: |
1253 | ret = -LTTNG_ERR_INVALID; | |
1254 | goto end; | |
1255 | } | |
1256 | ||
1257 | ret = sizeof(*lookup_comm); | |
1258 | end: | |
1259 | return ret; | |
1260 | } | |
1261 | ||
1262 | LTTNG_HIDDEN | |
1263 | int lttng_userspace_probe_location_create_from_buffer( | |
1264 | const struct lttng_buffer_view *buffer, | |
1265 | struct lttng_userspace_probe_location **location) | |
1266 | { | |
1267 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1268 | struct lttng_userspace_probe_location_comm *probe_location_comm; | |
1269 | enum lttng_userspace_probe_location_type type; | |
1270 | struct lttng_buffer_view lookup_method_view; | |
1271 | int consumed = 0; | |
1272 | int ret; | |
1273 | ||
1274 | ||
1275 | assert(buffer); | |
1276 | assert(buffer->data); | |
1277 | assert(location); | |
1278 | ||
1279 | lookup_method = NULL; | |
1280 | ||
1281 | if (buffer->size <= sizeof(*probe_location_comm)) { | |
1282 | ret = -LTTNG_ERR_INVALID; | |
1283 | goto end; | |
1284 | } | |
1285 | ||
1286 | probe_location_comm = | |
1287 | (struct lttng_userspace_probe_location_comm *) buffer->data; | |
1288 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; | |
1289 | consumed += sizeof(*probe_location_comm); | |
1290 | ||
1291 | switch (type) { | |
1292 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1293 | { | |
1294 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1295 | buffer, consumed, buffer->size - consumed); | |
1296 | ||
1297 | ret = lttng_userspace_probe_location_function_create_from_buffer( | |
1298 | &view, location); | |
1299 | if (ret < 0) { | |
1300 | goto end; | |
1301 | } | |
1302 | break; | |
1303 | } | |
f4d0bb2e FD |
1304 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1305 | { | |
1306 | struct lttng_buffer_view view = lttng_buffer_view_from_view( | |
1307 | buffer, consumed, buffer->size - consumed); | |
1308 | ||
1309 | ret = lttng_userspace_probe_location_tracepoint_create_from_buffer( | |
1310 | &view, location); | |
1311 | if (ret < 0) { | |
1312 | goto end; | |
1313 | } | |
1314 | break; | |
1315 | } | |
1ce46cfe JG |
1316 | default: |
1317 | ret = -LTTNG_ERR_INVALID; | |
1318 | goto end; | |
1319 | } | |
1320 | ||
1321 | consumed += ret; | |
1322 | if (buffer->size <= consumed) { | |
1323 | ret = -LTTNG_ERR_INVALID; | |
1324 | goto end; | |
1325 | } | |
1326 | ||
1327 | lookup_method_view = lttng_buffer_view_from_view(buffer, consumed, | |
1328 | buffer->size - consumed); | |
1329 | ret = lttng_userspace_probe_location_lookup_method_create_from_buffer( | |
1330 | &lookup_method_view, &lookup_method); | |
1331 | if (ret < 0) { | |
1332 | ret = -LTTNG_ERR_INVALID; | |
1333 | goto end; | |
1334 | } | |
1335 | ||
1336 | assert(lookup_method); | |
1337 | (*location)->lookup_method = lookup_method; | |
1338 | lookup_method = NULL; | |
1339 | ret += consumed; | |
1340 | end: | |
1341 | return ret; | |
1342 | } | |
1343 | ||
1344 | LTTNG_HIDDEN | |
1345 | int lttng_userspace_probe_location_function_set_binary_fd( | |
1346 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1347 | { | |
1348 | int ret = 0; | |
1349 | struct lttng_userspace_probe_location_function *function_location; | |
1350 | ||
1351 | assert(location); | |
1352 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1353 | ||
1354 | function_location = container_of(location, | |
1355 | struct lttng_userspace_probe_location_function, parent); | |
1356 | if (function_location->binary_fd >= 0) { | |
1357 | ret = close(function_location->binary_fd); | |
1358 | if (ret) { | |
1359 | PERROR("close"); | |
1360 | ret = -LTTNG_ERR_INVALID; | |
1361 | goto end; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | function_location->binary_fd = binary_fd; | |
1366 | end: | |
1367 | return ret; | |
1368 | } | |
1369 | ||
f4d0bb2e FD |
1370 | LTTNG_HIDDEN |
1371 | int lttng_userspace_probe_location_tracepoint_set_binary_fd( | |
1372 | struct lttng_userspace_probe_location *location, int binary_fd) | |
1373 | { | |
1374 | int ret = 0; | |
1375 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1376 | ||
1377 | assert(location); | |
1378 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
1379 | ||
1380 | tracepoint_location = container_of(location, | |
1381 | struct lttng_userspace_probe_location_tracepoint, parent); | |
1382 | if (tracepoint_location->binary_fd >= 0) { | |
1383 | ret = close(tracepoint_location->binary_fd); | |
1384 | if (ret) { | |
1385 | PERROR("close"); | |
1386 | ret = -LTTNG_ERR_INVALID; | |
1387 | goto end; | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | tracepoint_location->binary_fd = binary_fd; | |
1392 | end: | |
1393 | return ret; | |
1394 | } | |
1395 | ||
1ce46cfe JG |
1396 | static |
1397 | int lttng_userspace_probe_location_function_flatten( | |
1398 | const struct lttng_userspace_probe_location *location, | |
1399 | struct lttng_dynamic_buffer *buffer) | |
1400 | { | |
1401 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1402 | struct lttng_userspace_probe_location_function *probe_function; | |
1403 | struct lttng_userspace_probe_location_function flat_probe; | |
1404 | size_t function_name_len, binary_path_len; | |
1405 | size_t padding_needed = 0; | |
1406 | char *flat_probe_start; | |
1407 | int storage_needed = 0; | |
1408 | int ret; | |
1409 | ||
1410 | assert(location); | |
1411 | ||
1412 | if (location->lookup_method && location->lookup_method->type != | |
1413 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1414 | ret = -LTTNG_ERR_INVALID; | |
1415 | goto end; | |
1416 | } | |
1417 | ||
1418 | probe_function = container_of(location, | |
1419 | struct lttng_userspace_probe_location_function, | |
1420 | parent); | |
1421 | assert(probe_function->function_name); | |
1422 | assert(probe_function->binary_path); | |
1423 | ||
1424 | storage_needed += | |
1425 | sizeof(struct lttng_userspace_probe_location_function); | |
1426 | function_name_len = strlen(probe_function->function_name) + 1; | |
1427 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1428 | storage_needed += function_name_len + binary_path_len; | |
1429 | ||
1430 | /* | |
1431 | * The lookup method is aligned to 64-bit within the buffer. | |
1432 | * This is needed even if there is no lookup method since | |
1433 | * the next structure in the buffer probably needs to be | |
1434 | * aligned too (depending on the arch). | |
1435 | */ | |
1436 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1437 | storage_needed += padding_needed; | |
1438 | ||
1439 | if (location->lookup_method) { | |
1440 | /* NOTE: elf look-up method is assumed here. */ | |
1441 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1442 | } | |
1443 | ||
1444 | if (!buffer) { | |
1445 | ret = storage_needed; | |
1446 | goto end; | |
1447 | } | |
1448 | ||
1449 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1450 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1451 | buffer->size + storage_needed); | |
1452 | if (ret) { | |
1453 | goto end; | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1458 | ||
1459 | flat_probe_start = buffer->data + buffer->size; | |
1460 | flat_probe.parent.type = location->type; | |
1461 | /* | |
1462 | * The lookup method, if present, is the last element in the flat | |
1463 | * representation of the probe. | |
1464 | */ | |
1465 | if (location->lookup_method) { | |
1466 | flat_probe.parent.lookup_method = | |
1467 | (struct lttng_userspace_probe_location_lookup_method *) | |
1468 | (flat_probe_start + sizeof(flat_probe) + | |
1469 | function_name_len + binary_path_len + padding_needed); | |
1470 | } else { | |
1471 | flat_probe.parent.lookup_method = NULL; | |
1472 | } | |
1473 | ||
1474 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1475 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
1476 | flat_probe.binary_fd = -1; | |
1477 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, | |
1478 | sizeof(flat_probe)); | |
1479 | if (ret) { | |
1480 | goto end; | |
1481 | } | |
1482 | ||
1483 | ret = lttng_dynamic_buffer_append(buffer, | |
1484 | probe_function->function_name, function_name_len); | |
1485 | if (ret) { | |
1486 | goto end; | |
1487 | } | |
1488 | ret = lttng_dynamic_buffer_append(buffer, | |
1489 | probe_function->binary_path, binary_path_len); | |
1490 | if (ret) { | |
1491 | goto end; | |
1492 | } | |
1493 | ||
1494 | /* Insert padding before the lookup method. */ | |
1495 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1496 | buffer->size + padding_needed); | |
1497 | if (ret) { | |
1498 | goto end; | |
1499 | } | |
1500 | ||
1501 | if (!location->lookup_method) { | |
1502 | /* Not an error, the default method is used. */ | |
1503 | ret = storage_needed; | |
1504 | goto end; | |
1505 | } | |
1506 | ||
1507 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1508 | flat_lookup_method.parent.type = | |
1509 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1510 | ret = lttng_dynamic_buffer_append(buffer, | |
1511 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1512 | if (ret) { | |
1513 | goto end; | |
1514 | } | |
1515 | ret = storage_needed; | |
1516 | end: | |
1517 | return ret; | |
1518 | } | |
1519 | ||
f4d0bb2e FD |
1520 | static |
1521 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1522 | const struct lttng_userspace_probe_location *location, | |
1523 | struct lttng_dynamic_buffer *buffer) | |
1524 | { | |
1525 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1526 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1527 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1528 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1529 | size_t padding_needed = 0; | |
1530 | int storage_needed = 0; | |
1531 | char *flat_probe_start; | |
1532 | int ret = 0; | |
1533 | ||
1534 | assert(location); | |
1535 | ||
1536 | /* Only SDT tracepoints are supported at the moment */ | |
1537 | if (location->lookup_method && location->lookup_method->type != | |
1538 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1539 | ret = -LTTNG_ERR_INVALID; | |
1540 | goto end; | |
1541 | } | |
1542 | probe_tracepoint = container_of(location, | |
1543 | struct lttng_userspace_probe_location_tracepoint, | |
1544 | parent); | |
1545 | assert(probe_tracepoint->probe_name); | |
1546 | assert(probe_tracepoint->provider_name); | |
1547 | assert(probe_tracepoint->binary_path); | |
1548 | ||
1549 | /* Compute the storage space needed to flatten the probe location */ | |
1550 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1551 | ||
1552 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1553 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1554 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1555 | ||
1556 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1557 | ||
1558 | /* | |
1559 | * The lookup method is aligned to 64-bit within the buffer. | |
1560 | * This is needed even if there is no lookup method since | |
1561 | * the next structure in the buffer probably needs to be | |
1562 | * aligned too (depending on the arch). | |
1563 | */ | |
1564 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1565 | storage_needed += padding_needed; | |
1566 | ||
1567 | if (location->lookup_method) { | |
1568 | /* NOTE: elf look-up method is assumed here. */ | |
1569 | storage_needed += | |
1570 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1571 | } | |
1572 | ||
1573 | /* | |
1574 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1575 | */ | |
1576 | if (!buffer) { | |
1577 | ret = storage_needed; | |
1578 | goto end; | |
1579 | } | |
1580 | ||
1581 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1582 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1583 | buffer->size + storage_needed); | |
1584 | if (ret) { | |
1585 | goto end; | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1590 | ||
1591 | flat_probe_start = buffer->data + buffer->size; | |
1592 | flat_probe.parent.type = location->type; | |
1593 | ||
1594 | /* | |
1595 | * The lookup method, if present, is the last element in the flat | |
1596 | * representation of the probe. | |
1597 | */ | |
1598 | if (location->lookup_method) { | |
1599 | flat_probe.parent.lookup_method = | |
1600 | (struct lttng_userspace_probe_location_lookup_method *) | |
1601 | (flat_probe_start + sizeof(flat_probe) + | |
1602 | probe_name_len + provider_name_len + | |
1603 | binary_path_len + padding_needed); | |
1604 | } else { | |
1605 | flat_probe.parent.lookup_method = NULL; | |
1606 | } | |
1607 | ||
1608 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1609 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1610 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
1611 | flat_probe.binary_fd = -1; | |
1612 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); | |
1613 | if (ret) { | |
1614 | goto end; | |
1615 | } | |
1616 | ||
1617 | /* Append all the fields to the buffer */ | |
1618 | ret = lttng_dynamic_buffer_append(buffer, | |
1619 | probe_tracepoint->probe_name, probe_name_len); | |
1620 | if (ret) { | |
1621 | goto end; | |
1622 | } | |
1623 | ret = lttng_dynamic_buffer_append(buffer, | |
1624 | probe_tracepoint->provider_name, provider_name_len); | |
1625 | if (ret) { | |
1626 | goto end; | |
1627 | } | |
1628 | ret = lttng_dynamic_buffer_append(buffer, | |
1629 | probe_tracepoint->binary_path, binary_path_len); | |
1630 | if (ret) { | |
1631 | goto end; | |
1632 | } | |
1633 | ||
1634 | /* Insert padding before the lookup method. */ | |
1635 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1636 | if (ret) { | |
1637 | goto end; | |
1638 | } | |
1639 | ||
1640 | if (!location->lookup_method) { | |
1641 | /* Not an error, the default method is used. */ | |
1642 | ret = storage_needed; | |
1643 | goto end; | |
1644 | } | |
1645 | ||
1646 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1647 | ||
1648 | flat_lookup_method.parent.type = | |
1649 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1650 | ret = lttng_dynamic_buffer_append(buffer, | |
1651 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1652 | if (ret) { | |
1653 | goto end; | |
1654 | } | |
1655 | ret = storage_needed; | |
1656 | end: | |
1657 | return ret; | |
1658 | } | |
1659 | ||
1ce46cfe JG |
1660 | LTTNG_HIDDEN |
1661 | int lttng_userspace_probe_location_flatten( | |
1662 | const struct lttng_userspace_probe_location *location, | |
1663 | struct lttng_dynamic_buffer *buffer) | |
1664 | { | |
1665 | int ret; | |
1666 | if (!location) { | |
1667 | ret = -LTTNG_ERR_INVALID; | |
1668 | goto end; | |
1669 | } | |
1670 | ||
1671 | /* Only types currently supported. */ | |
1672 | switch (location->type) { | |
1673 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1674 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1675 | break; | |
f4d0bb2e FD |
1676 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1677 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1678 | break; | |
1ce46cfe JG |
1679 | default: |
1680 | ret = -LTTNG_ERR_INVALID; | |
1681 | goto end; | |
1682 | } | |
1683 | ||
1684 | end: | |
1685 | return ret; | |
1686 | } | |
394357fe FD |
1687 | |
1688 | LTTNG_HIDDEN | |
1689 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1690 | const struct lttng_userspace_probe_location *location) | |
1691 | { | |
1692 | struct lttng_userspace_probe_location *new_location = NULL; | |
1693 | enum lttng_userspace_probe_location_type type; | |
1694 | ||
1695 | if (!location) { | |
1696 | goto err; | |
1697 | } | |
1698 | ||
1699 | type = lttng_userspace_probe_location_get_type(location); | |
1700 | switch (type) { | |
1701 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1702 | new_location = | |
1703 | lttng_userspace_probe_location_function_copy(location); | |
1704 | if (!new_location) { | |
1705 | goto err; | |
1706 | } | |
1707 | break; | |
f4d0bb2e FD |
1708 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1709 | new_location = | |
1710 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1711 | if (!new_location) { | |
1712 | goto err; | |
1713 | } | |
1714 | break; | |
394357fe FD |
1715 | default: |
1716 | new_location = NULL; | |
1717 | goto err; | |
1718 | } | |
1719 | err: | |
1720 | return new_location; | |
1721 | } |