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 | ||
e368fb43 | 8 | #include "lttng/lttng-error.h" |
dfcfa983 | 9 | #include <common/compat/string.h> |
1ce46cfe | 10 | #include <common/error.h> |
959e3c66 JR |
11 | #include <common/hashtable/hashtable.h> |
12 | #include <common/hashtable/utils.h> | |
6a751b95 JR |
13 | #include <common/macros.h> |
14 | #include <common/mi-lttng.h> | |
15 | #include <common/payload-view.h> | |
16 | #include <common/payload.h> | |
1ce46cfe JG |
17 | #include <fcntl.h> |
18 | #include <lttng/constant.h> | |
19 | #include <lttng/userspace-probe-internal.h> | |
dfcfa983 JR |
20 | #include <sys/stat.h> |
21 | #include <sys/types.h> | |
22 | #include <sys/unistd.h> | |
1ce46cfe | 23 | |
fe489250 | 24 | static |
2cde0510 | 25 | int lttng_userspace_probe_location_function_set_binary_fd_handle( |
fe489250 | 26 | struct lttng_userspace_probe_location *location, |
2cde0510 | 27 | struct fd_handle *binary_fd_handle); |
fe489250 JG |
28 | |
29 | static | |
2cde0510 | 30 | int lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
fe489250 | 31 | struct lttng_userspace_probe_location *location, |
2cde0510 | 32 | struct fd_handle *binary_fd_handle); |
fe489250 | 33 | |
6a751b95 JR |
34 | static |
35 | enum lttng_error_code lttng_userspace_probe_location_lookup_method_mi_serialize( | |
36 | const struct lttng_userspace_probe_location_lookup_method | |
37 | *method, | |
38 | struct mi_writer *writer); | |
39 | ||
40 | static | |
41 | enum lttng_error_code lttng_userspace_probe_location_tracepoint_mi_serialize( | |
42 | const struct lttng_userspace_probe_location *location, | |
43 | struct mi_writer *writer); | |
44 | ||
45 | static | |
46 | enum lttng_error_code lttng_userspace_probe_location_function_mi_serialize( | |
47 | const struct lttng_userspace_probe_location *location, | |
48 | struct mi_writer *writer); | |
49 | ||
1ce46cfe JG |
50 | enum lttng_userspace_probe_location_lookup_method_type |
51 | lttng_userspace_probe_location_lookup_method_get_type( | |
52 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
53 | { | |
54 | return lookup_method ? lookup_method->type : | |
55 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
56 | } | |
57 | ||
58 | void lttng_userspace_probe_location_lookup_method_destroy( | |
59 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
60 | { | |
61 | if (!lookup_method){ | |
62 | return; | |
63 | } | |
64 | ||
5d21f143 | 65 | free(lookup_method); |
1ce46cfe JG |
66 | } |
67 | ||
68 | struct lttng_userspace_probe_location_lookup_method * | |
69 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
70 | { | |
71 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
72 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
73 | ||
74 | elf_method = zmalloc(sizeof(*elf_method)); | |
75 | if (!elf_method) { | |
76 | PERROR("zmalloc"); | |
77 | goto end; | |
78 | } | |
79 | ||
80 | ret = &elf_method->parent; | |
81 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
82 | end: | |
83 | return ret; | |
84 | } | |
85 | ||
f4d0bb2e FD |
86 | struct lttng_userspace_probe_location_lookup_method * |
87 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
88 | { | |
89 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
90 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
91 | ||
92 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
93 | if (!sdt_method) { | |
94 | PERROR("zmalloc"); | |
95 | goto end; | |
96 | } | |
97 | ||
98 | ret = &sdt_method->parent; | |
99 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
100 | end: | |
101 | return ret; | |
102 | } | |
103 | ||
1ce46cfe JG |
104 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
105 | const struct lttng_userspace_probe_location *location) | |
106 | { | |
107 | return location ? location->type : | |
108 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
109 | } | |
110 | ||
111 | static | |
112 | void lttng_userspace_probe_location_function_destroy( | |
113 | struct lttng_userspace_probe_location *location) | |
114 | { | |
115 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
116 | ||
a0377dfe | 117 | LTTNG_ASSERT(location); |
1ce46cfe JG |
118 | |
119 | location_function = container_of(location, | |
120 | struct lttng_userspace_probe_location_function, parent); | |
121 | ||
a0377dfe | 122 | LTTNG_ASSERT(location_function); |
1ce46cfe JG |
123 | |
124 | free(location_function->function_name); | |
125 | free(location_function->binary_path); | |
2cde0510 | 126 | fd_handle_put(location_function->binary_fd_handle); |
1ce46cfe JG |
127 | free(location); |
128 | } | |
129 | ||
f4d0bb2e FD |
130 | static |
131 | void lttng_userspace_probe_location_tracepoint_destroy( | |
132 | struct lttng_userspace_probe_location *location) | |
133 | { | |
134 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
135 | ||
a0377dfe | 136 | LTTNG_ASSERT(location); |
f4d0bb2e FD |
137 | |
138 | location_tracepoint = container_of(location, | |
139 | struct lttng_userspace_probe_location_tracepoint, | |
140 | parent); | |
141 | ||
a0377dfe | 142 | LTTNG_ASSERT(location_tracepoint); |
f4d0bb2e FD |
143 | |
144 | free(location_tracepoint->probe_name); | |
145 | free(location_tracepoint->provider_name); | |
146 | free(location_tracepoint->binary_path); | |
2cde0510 | 147 | fd_handle_put(location_tracepoint->binary_fd_handle); |
f4d0bb2e FD |
148 | free(location); |
149 | } | |
150 | ||
1ce46cfe JG |
151 | void lttng_userspace_probe_location_destroy( |
152 | struct lttng_userspace_probe_location *location) | |
153 | { | |
154 | if (!location) { | |
155 | return; | |
156 | } | |
157 | ||
158 | lttng_userspace_probe_location_lookup_method_destroy( | |
159 | location->lookup_method); | |
160 | ||
161 | switch (location->type) { | |
162 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
163 | lttng_userspace_probe_location_function_destroy(location); | |
164 | break; | |
f4d0bb2e FD |
165 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
166 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
167 | break; | |
1ce46cfe | 168 | default: |
adf53c67 | 169 | abort(); |
1ce46cfe JG |
170 | } |
171 | } | |
172 | ||
dfcfa983 JR |
173 | /* Compare two file descriptors based on their inode and device numbers. */ |
174 | static bool fd_is_equal(int a, int b) | |
175 | { | |
176 | int ret; | |
177 | bool is_equal = false; | |
178 | struct stat a_stat, b_stat; | |
179 | ||
180 | if (a < 0 && b >= 0) { | |
181 | goto end; | |
182 | } | |
183 | ||
184 | if (b < 0 && a >= 0) { | |
185 | goto end; | |
186 | } | |
187 | ||
188 | if (a < 0 && b < 0) { | |
189 | if (a == -1 && b == -1) { | |
190 | is_equal = true; | |
191 | goto end; | |
192 | } | |
193 | ||
194 | /* Invalid state, abort. */ | |
195 | abort(); | |
196 | } | |
197 | ||
198 | /* Both are valid file descriptors. */ | |
199 | ret = fstat(a, &a_stat); | |
200 | if (ret) { | |
201 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
202 | a); | |
203 | goto end; | |
204 | } | |
205 | ||
206 | ret = fstat(b, &b_stat); | |
207 | if (ret) { | |
208 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
209 | b); | |
210 | goto end; | |
211 | } | |
212 | ||
213 | is_equal = (a_stat.st_ino == b_stat.st_ino) && | |
214 | (a_stat.st_dev == b_stat.st_dev); | |
215 | ||
216 | end: | |
217 | return is_equal; | |
218 | } | |
219 | ||
959e3c66 JR |
220 | static unsigned long lttng_userspace_probe_location_function_hash( |
221 | const struct lttng_userspace_probe_location *location) | |
222 | { | |
223 | unsigned long hash = hash_key_ulong( | |
224 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION, | |
225 | lttng_ht_seed); | |
226 | struct lttng_userspace_probe_location_function *function_location = | |
227 | container_of(location, typeof(*function_location), | |
228 | parent); | |
229 | ||
230 | hash ^= hash_key_str(function_location->function_name, lttng_ht_seed); | |
231 | hash ^= hash_key_str(function_location->binary_path, lttng_ht_seed); | |
232 | /* | |
233 | * No need to hash on the fd. Worst comes to worse, | |
234 | * the equal function will discriminate. | |
235 | */ | |
236 | return hash; | |
237 | } | |
238 | ||
dfcfa983 JR |
239 | static bool lttng_userspace_probe_location_function_is_equal( |
240 | const struct lttng_userspace_probe_location *_a, | |
241 | const struct lttng_userspace_probe_location *_b) | |
242 | { | |
243 | bool is_equal = false; | |
244 | struct lttng_userspace_probe_location_function *a, *b; | |
245 | ||
246 | a = container_of(_a, struct lttng_userspace_probe_location_function, | |
247 | parent); | |
248 | b = container_of(_b, struct lttng_userspace_probe_location_function, | |
249 | parent); | |
250 | ||
251 | if (a->instrumentation_type != b->instrumentation_type) { | |
252 | goto end; | |
253 | } | |
254 | ||
a0377dfe FD |
255 | LTTNG_ASSERT(a->function_name); |
256 | LTTNG_ASSERT(b->function_name); | |
dfcfa983 JR |
257 | if (strcmp(a->function_name, b->function_name)) { |
258 | goto end; | |
259 | } | |
260 | ||
a0377dfe FD |
261 | LTTNG_ASSERT(a->binary_path); |
262 | LTTNG_ASSERT(b->binary_path); | |
dfcfa983 JR |
263 | if (strcmp(a->binary_path, b->binary_path)) { |
264 | goto end; | |
265 | } | |
266 | ||
2cde0510 JG |
267 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
268 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
269 | end: |
270 | return is_equal; | |
271 | } | |
272 | ||
1ce46cfe JG |
273 | static struct lttng_userspace_probe_location * |
274 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
275 | const char *function_name, | |
276 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
277 | bool open_binary) | |
278 | { | |
279 | int binary_fd = -1; | |
fe489250 | 280 | struct fd_handle *binary_fd_handle = NULL; |
1ce46cfe JG |
281 | char *function_name_copy = NULL, *binary_path_copy = NULL; |
282 | struct lttng_userspace_probe_location *ret = NULL; | |
283 | struct lttng_userspace_probe_location_function *location; | |
284 | ||
285 | if (open_binary) { | |
286 | binary_fd = open(binary_path, O_RDONLY); | |
287 | if (binary_fd < 0) { | |
288 | PERROR("Error opening the binary"); | |
289 | goto error; | |
290 | } | |
fe489250 JG |
291 | |
292 | binary_fd_handle = fd_handle_create(binary_fd); | |
293 | if (!binary_fd) { | |
294 | goto error; | |
295 | } | |
296 | ||
297 | /* Ownership transferred to fd_handle. */ | |
1ce46cfe JG |
298 | binary_fd = -1; |
299 | } | |
300 | ||
301 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
302 | if (!function_name_copy) { | |
303 | PERROR("Error duplicating the function name"); | |
304 | goto error; | |
305 | } | |
306 | ||
307 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
308 | if (!binary_path_copy) { | |
309 | PERROR("Error duplicating the function name"); | |
310 | goto error; | |
311 | } | |
312 | ||
313 | location = zmalloc(sizeof(*location)); | |
314 | if (!location) { | |
315 | PERROR("Error allocating userspace probe location"); | |
316 | goto error; | |
317 | } | |
318 | ||
319 | location->function_name = function_name_copy; | |
320 | location->binary_path = binary_path_copy; | |
2cde0510 | 321 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 322 | binary_fd_handle = NULL; |
9d3981b5 JG |
323 | location->instrumentation_type = |
324 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
325 | |
326 | ret = &location->parent; | |
327 | ret->lookup_method = lookup_method; | |
328 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
dfcfa983 | 329 | ret->equal = lttng_userspace_probe_location_function_is_equal; |
959e3c66 | 330 | ret->hash = lttng_userspace_probe_location_function_hash; |
1ce46cfe JG |
331 | goto end; |
332 | ||
333 | error: | |
334 | free(function_name_copy); | |
335 | free(binary_path_copy); | |
336 | if (binary_fd >= 0) { | |
337 | if (close(binary_fd)) { | |
338 | PERROR("Error closing binary fd in error path"); | |
339 | } | |
340 | } | |
fe489250 | 341 | fd_handle_put(binary_fd_handle); |
1ce46cfe JG |
342 | end: |
343 | return ret; | |
344 | } | |
345 | ||
959e3c66 JR |
346 | static unsigned long lttng_userspace_probe_location_tracepoint_hash( |
347 | const struct lttng_userspace_probe_location *location) | |
348 | { | |
349 | unsigned long hash = hash_key_ulong( | |
350 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT, | |
351 | lttng_ht_seed); | |
352 | struct lttng_userspace_probe_location_tracepoint *tp_location = | |
353 | container_of(location, typeof(*tp_location), parent); | |
354 | ||
355 | hash ^= hash_key_str(tp_location->probe_name, lttng_ht_seed); | |
356 | hash ^= hash_key_str(tp_location->provider_name, lttng_ht_seed); | |
357 | hash ^= hash_key_str(tp_location->binary_path, lttng_ht_seed); | |
358 | /* | |
359 | * No need to hash on the fd. Worst comes to worse, | |
360 | * the equal function will discriminate. | |
361 | */ | |
362 | return hash; | |
363 | } | |
364 | ||
dfcfa983 JR |
365 | static bool lttng_userspace_probe_location_tracepoint_is_equal( |
366 | const struct lttng_userspace_probe_location *_a, | |
367 | const struct lttng_userspace_probe_location *_b) | |
368 | { | |
369 | bool is_equal = false; | |
370 | struct lttng_userspace_probe_location_tracepoint *a, *b; | |
371 | ||
372 | a = container_of(_a, struct lttng_userspace_probe_location_tracepoint, | |
373 | parent); | |
374 | b = container_of(_b, struct lttng_userspace_probe_location_tracepoint, | |
375 | parent); | |
376 | ||
a0377dfe FD |
377 | LTTNG_ASSERT(a->probe_name); |
378 | LTTNG_ASSERT(b->probe_name); | |
dfcfa983 JR |
379 | if (strcmp(a->probe_name, b->probe_name)) { |
380 | goto end; | |
381 | } | |
382 | ||
a0377dfe FD |
383 | LTTNG_ASSERT(a->provider_name); |
384 | LTTNG_ASSERT(b->provider_name); | |
dfcfa983 JR |
385 | if (strcmp(a->provider_name, b->provider_name)) { |
386 | goto end; | |
387 | } | |
388 | ||
a0377dfe FD |
389 | LTTNG_ASSERT(a->binary_path); |
390 | LTTNG_ASSERT(b->binary_path); | |
dfcfa983 JR |
391 | if (strcmp(a->binary_path, b->binary_path)) { |
392 | goto end; | |
393 | } | |
394 | ||
2cde0510 JG |
395 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
396 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
397 | |
398 | end: | |
399 | return is_equal; | |
400 | } | |
401 | ||
f4d0bb2e FD |
402 | static struct lttng_userspace_probe_location * |
403 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
404 | const char *provider_name, const char *probe_name, | |
405 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
406 | bool open_binary) | |
407 | { | |
408 | int binary_fd = -1; | |
fe489250 | 409 | struct fd_handle *binary_fd_handle = NULL; |
f4d0bb2e FD |
410 | char *probe_name_copy = NULL; |
411 | char *provider_name_copy = NULL; | |
412 | char *binary_path_copy = NULL; | |
413 | struct lttng_userspace_probe_location *ret = NULL; | |
414 | struct lttng_userspace_probe_location_tracepoint *location; | |
415 | ||
416 | if (open_binary) { | |
417 | binary_fd = open(binary_path, O_RDONLY); | |
418 | if (binary_fd < 0) { | |
419 | PERROR("open"); | |
420 | goto error; | |
421 | } | |
fe489250 JG |
422 | |
423 | binary_fd_handle = fd_handle_create(binary_fd); | |
424 | if (!binary_fd) { | |
425 | goto error; | |
426 | } | |
427 | ||
428 | /* Ownership transferred to fd_handle. */ | |
f4d0bb2e FD |
429 | binary_fd = -1; |
430 | } | |
431 | ||
432 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
433 | if (!probe_name_copy) { | |
434 | PERROR("lttng_strndup"); | |
435 | goto error; | |
436 | } | |
437 | ||
438 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
439 | if (!provider_name_copy) { | |
440 | PERROR("lttng_strndup"); | |
441 | goto error; | |
442 | } | |
443 | ||
444 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
445 | if (!binary_path_copy) { | |
446 | PERROR("lttng_strndup"); | |
447 | goto error; | |
448 | } | |
449 | ||
450 | location = zmalloc(sizeof(*location)); | |
451 | if (!location) { | |
452 | PERROR("zmalloc"); | |
453 | goto error; | |
454 | } | |
455 | ||
456 | location->probe_name = probe_name_copy; | |
457 | location->provider_name = provider_name_copy; | |
458 | location->binary_path = binary_path_copy; | |
2cde0510 | 459 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 460 | binary_fd_handle = NULL; |
f4d0bb2e FD |
461 | |
462 | ret = &location->parent; | |
463 | ret->lookup_method = lookup_method; | |
464 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
dfcfa983 | 465 | ret->equal = lttng_userspace_probe_location_tracepoint_is_equal; |
959e3c66 | 466 | ret->hash = lttng_userspace_probe_location_tracepoint_hash; |
f4d0bb2e FD |
467 | goto end; |
468 | ||
469 | error: | |
470 | free(probe_name_copy); | |
471 | free(provider_name_copy); | |
7c86453b | 472 | free(binary_path_copy); |
f4d0bb2e FD |
473 | if (binary_fd >= 0) { |
474 | if (close(binary_fd)) { | |
475 | PERROR("Error closing binary fd in error path"); | |
476 | } | |
477 | } | |
fe489250 | 478 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
479 | end: |
480 | return ret; | |
481 | } | |
482 | ||
1ce46cfe JG |
483 | struct lttng_userspace_probe_location * |
484 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
485 | const char *function_name, | |
486 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
487 | { | |
488 | struct lttng_userspace_probe_location *ret = NULL; | |
489 | ||
490 | if (!binary_path || !function_name) { | |
f04a8200 | 491 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
492 | goto end; |
493 | } | |
494 | ||
495 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
496 | lookup_method)) { | |
497 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
498 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
499 | break; | |
500 | default: | |
501 | /* Invalid probe location lookup method. */ | |
502 | goto end; | |
503 | } | |
504 | ||
505 | ret = lttng_userspace_probe_location_function_create_no_check( | |
506 | binary_path, function_name, lookup_method, true); | |
507 | end: | |
508 | return ret; | |
509 | } | |
510 | ||
f4d0bb2e FD |
511 | struct lttng_userspace_probe_location * |
512 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
513 | const char *provider_name, const char *probe_name, | |
514 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
515 | { | |
516 | struct lttng_userspace_probe_location *ret = NULL; | |
517 | ||
518 | if (!binary_path || !probe_name || !provider_name) { | |
f04a8200 | 519 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
520 | goto end; |
521 | } | |
522 | ||
523 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
524 | lookup_method)) { | |
525 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
526 | break; | |
527 | default: | |
528 | /* Invalid probe location lookup method. */ | |
529 | goto end; | |
530 | } | |
531 | ||
532 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
533 | binary_path, provider_name, probe_name, lookup_method, true); | |
534 | end: | |
535 | return ret; | |
536 | } | |
537 | ||
394357fe FD |
538 | static struct lttng_userspace_probe_location_lookup_method * |
539 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
540 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
541 | { | |
542 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
543 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
544 | ||
a0377dfe FD |
545 | LTTNG_ASSERT(lookup_method); |
546 | LTTNG_ASSERT(lookup_method->type == | |
394357fe FD |
547 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); |
548 | ||
549 | elf_method = zmalloc(sizeof(*elf_method)); | |
550 | if (!elf_method) { | |
551 | PERROR("Error allocating ELF userspace probe lookup method"); | |
552 | goto error; | |
553 | } | |
554 | ||
555 | elf_method->parent.type = lookup_method->type; | |
556 | parent = &elf_method->parent; | |
557 | ||
558 | goto end; | |
559 | error: | |
560 | parent = NULL; | |
561 | end: | |
562 | return parent; | |
563 | } | |
564 | ||
f4d0bb2e FD |
565 | static struct lttng_userspace_probe_location_lookup_method * |
566 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
567 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
568 | { | |
569 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
570 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
571 | ||
a0377dfe FD |
572 | LTTNG_ASSERT(lookup_method); |
573 | LTTNG_ASSERT(lookup_method->type == | |
f4d0bb2e FD |
574 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); |
575 | ||
576 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
577 | if (!sdt_method) { | |
578 | PERROR("zmalloc"); | |
579 | goto error; | |
580 | } | |
581 | ||
582 | sdt_method->parent.type = lookup_method->type; | |
583 | parent = &sdt_method->parent; | |
584 | ||
585 | goto end; | |
586 | ||
587 | error: | |
588 | parent = NULL; | |
589 | end: | |
590 | return parent; | |
591 | } | |
592 | ||
394357fe FD |
593 | static struct lttng_userspace_probe_location * |
594 | lttng_userspace_probe_location_function_copy( | |
595 | const struct lttng_userspace_probe_location *location) | |
596 | { | |
597 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
598 | struct lttng_userspace_probe_location *new_location = NULL; | |
599 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
600 | const char *binary_path = NULL; |
601 | const char *function_name = NULL; | |
fe489250 | 602 | struct lttng_userspace_probe_location_function *function_location; |
394357fe | 603 | |
a0377dfe FD |
604 | LTTNG_ASSERT(location); |
605 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
fe489250 JG |
606 | function_location = container_of( |
607 | location, typeof(*function_location), parent); | |
394357fe | 608 | |
cc831309 FD |
609 | /* Get probe location fields */ |
610 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 611 | if (!binary_path) { |
cc831309 | 612 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
613 | goto error; |
614 | } | |
615 | ||
cc831309 | 616 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 617 | if (!function_name) { |
cc831309 | 618 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
619 | goto error; |
620 | } | |
621 | ||
394357fe FD |
622 | /* |
623 | * Duplicate probe location method fields | |
624 | */ | |
625 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
626 | location->lookup_method); | |
627 | switch (lookup_type) { | |
628 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
629 | lookup_method = | |
630 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
631 | location->lookup_method); | |
632 | if (!lookup_method) { | |
fe489250 | 633 | goto error; |
394357fe FD |
634 | } |
635 | break; | |
636 | default: | |
637 | /* Invalid probe location lookup method. */ | |
fe489250 | 638 | goto error; |
394357fe FD |
639 | } |
640 | ||
641 | /* Create the probe_location */ | |
642 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 643 | binary_path, function_name, lookup_method, false); |
394357fe FD |
644 | if (!new_location) { |
645 | goto destroy_lookup_method; | |
646 | } | |
647 | ||
648 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
649 | if (lttng_userspace_probe_location_function_set_binary_fd_handle(new_location, |
650 | function_location->binary_fd_handle) < 0) { | |
394357fe FD |
651 | goto destroy_probe_location; |
652 | } | |
653 | ||
654 | goto end; | |
655 | ||
656 | destroy_probe_location: | |
657 | lttng_userspace_probe_location_destroy(new_location); | |
658 | destroy_lookup_method: | |
659 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
394357fe | 660 | error: |
394357fe FD |
661 | new_location = NULL; |
662 | end: | |
663 | return new_location; | |
664 | } | |
665 | ||
f4d0bb2e FD |
666 | static struct lttng_userspace_probe_location * |
667 | lttng_userspace_probe_location_tracepoint_copy( | |
668 | const struct lttng_userspace_probe_location *location) | |
669 | { | |
670 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
671 | struct lttng_userspace_probe_location *new_location = NULL; | |
672 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
673 | const char *binary_path = NULL; |
674 | const char *probe_name = NULL; | |
675 | const char *provider_name = NULL; | |
fe489250 | 676 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; |
f4d0bb2e | 677 | |
a0377dfe FD |
678 | LTTNG_ASSERT(location); |
679 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
fe489250 JG |
680 | tracepoint_location = container_of( |
681 | location, typeof(*tracepoint_location), parent); | |
f4d0bb2e | 682 | |
fe489250 | 683 | /* Get probe location fields */ |
cc831309 | 684 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); |
f4d0bb2e | 685 | if (!binary_path) { |
cc831309 | 686 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
687 | goto error; |
688 | } | |
689 | ||
cc831309 | 690 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 691 | if (!probe_name) { |
cc831309 | 692 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
693 | goto error; |
694 | } | |
695 | ||
cc831309 | 696 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 697 | if (!provider_name) { |
cc831309 | 698 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
699 | goto error; |
700 | } | |
701 | ||
f4d0bb2e FD |
702 | /* |
703 | * Duplicate probe location method fields | |
704 | */ | |
705 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
706 | location->lookup_method); | |
707 | switch (lookup_type) { | |
708 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
709 | lookup_method = | |
710 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
711 | location->lookup_method); | |
712 | if (!lookup_method) { | |
fe489250 | 713 | goto error; |
f4d0bb2e FD |
714 | } |
715 | break; | |
716 | default: | |
717 | /* Invalid probe location lookup method. */ | |
fe489250 | 718 | goto error; |
f4d0bb2e FD |
719 | } |
720 | ||
721 | /* Create the probe_location */ | |
722 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 723 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
724 | if (!new_location) { |
725 | goto destroy_lookup_method; | |
726 | } | |
727 | ||
728 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
729 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd_handle(new_location, |
730 | tracepoint_location->binary_fd_handle) < 0) { | |
f4d0bb2e FD |
731 | goto destroy_probe_location; |
732 | } | |
733 | ||
734 | goto end; | |
735 | ||
736 | destroy_probe_location: | |
737 | lttng_userspace_probe_location_destroy(new_location); | |
738 | destroy_lookup_method: | |
739 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
f4d0bb2e | 740 | error: |
f4d0bb2e FD |
741 | new_location = NULL; |
742 | end: | |
743 | return new_location; | |
744 | } | |
745 | ||
1ce46cfe JG |
746 | const char *lttng_userspace_probe_location_function_get_binary_path( |
747 | const struct lttng_userspace_probe_location *location) | |
748 | { | |
749 | const char *ret = NULL; | |
750 | struct lttng_userspace_probe_location_function *function_location; | |
751 | ||
752 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
753 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 754 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
755 | goto end; |
756 | } | |
757 | ||
758 | function_location = container_of(location, | |
759 | struct lttng_userspace_probe_location_function, | |
760 | parent); | |
761 | ret = function_location->binary_path; | |
762 | end: | |
763 | return ret; | |
764 | } | |
765 | ||
f4d0bb2e FD |
766 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
767 | const struct lttng_userspace_probe_location *location) | |
768 | { | |
769 | const char *ret = NULL; | |
770 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
771 | ||
772 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
773 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 774 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
775 | goto end; |
776 | } | |
777 | ||
778 | tracepoint_location = container_of(location, | |
779 | struct lttng_userspace_probe_location_tracepoint, | |
780 | parent); | |
781 | ret = tracepoint_location->binary_path; | |
782 | end: | |
783 | return ret; | |
784 | } | |
785 | ||
1ce46cfe JG |
786 | const char *lttng_userspace_probe_location_function_get_function_name( |
787 | const struct lttng_userspace_probe_location *location) | |
788 | { | |
789 | const char *ret = NULL; | |
790 | struct lttng_userspace_probe_location_function *function_location; | |
791 | ||
792 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
793 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 794 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
795 | goto end; |
796 | } | |
797 | ||
798 | function_location = container_of(location, | |
799 | struct lttng_userspace_probe_location_function, parent); | |
800 | ret = function_location->function_name; | |
801 | end: | |
802 | return ret; | |
803 | } | |
804 | ||
f4d0bb2e FD |
805 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
806 | const struct lttng_userspace_probe_location *location) | |
807 | { | |
808 | const char *ret = NULL; | |
809 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
810 | ||
811 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
812 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 813 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
814 | goto end; |
815 | } | |
816 | ||
817 | tracepoint_location = container_of(location, | |
818 | struct lttng_userspace_probe_location_tracepoint, parent); | |
819 | ret = tracepoint_location->probe_name; | |
820 | end: | |
821 | return ret; | |
822 | } | |
823 | ||
824 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
825 | const struct lttng_userspace_probe_location *location) | |
826 | { | |
827 | const char *ret = NULL; | |
828 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
829 | ||
830 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
831 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 832 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
833 | goto end; |
834 | } | |
835 | ||
836 | tracepoint_location = container_of(location, | |
837 | struct lttng_userspace_probe_location_tracepoint, parent); | |
838 | ret = tracepoint_location->provider_name; | |
839 | end: | |
840 | return ret; | |
841 | } | |
842 | ||
1ce46cfe JG |
843 | int lttng_userspace_probe_location_function_get_binary_fd( |
844 | const struct lttng_userspace_probe_location *location) | |
845 | { | |
846 | int ret = -1; | |
847 | struct lttng_userspace_probe_location_function *function_location; | |
848 | ||
849 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
850 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 851 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
852 | goto end; |
853 | } | |
854 | ||
855 | function_location = container_of(location, | |
856 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 JG |
857 | ret = function_location->binary_fd_handle ? |
858 | fd_handle_get_fd(function_location->binary_fd_handle) : -1; | |
1ce46cfe JG |
859 | end: |
860 | return ret; | |
861 | } | |
862 | ||
9d3981b5 JG |
863 | enum lttng_userspace_probe_location_function_instrumentation_type |
864 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
865 | const struct lttng_userspace_probe_location *location) | |
866 | { | |
867 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
868 | struct lttng_userspace_probe_location_function *function_location; | |
869 | ||
870 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
871 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 872 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
873 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; |
874 | goto end; | |
875 | } | |
876 | ||
877 | function_location = container_of(location, | |
878 | struct lttng_userspace_probe_location_function, parent); | |
879 | type = function_location->instrumentation_type; | |
880 | end: | |
881 | return type; | |
882 | } | |
883 | ||
884 | enum lttng_userspace_probe_location_status | |
885 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
886 | const struct lttng_userspace_probe_location *location, | |
887 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
888 | { | |
889 | enum lttng_userspace_probe_location_status status = | |
890 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
891 | struct lttng_userspace_probe_location_function *function_location; | |
892 | ||
893 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
894 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
895 | instrumentation_type != | |
896 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
f04a8200 | 897 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
898 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; |
899 | goto end; | |
900 | } | |
901 | ||
902 | function_location = container_of(location, | |
903 | struct lttng_userspace_probe_location_function, parent); | |
904 | function_location->instrumentation_type = instrumentation_type; | |
905 | end: | |
906 | return status; | |
907 | } | |
908 | ||
f4d0bb2e FD |
909 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
910 | const struct lttng_userspace_probe_location *location) | |
911 | { | |
912 | int ret = -1; | |
913 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
914 | ||
915 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
916 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 917 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
918 | goto end; |
919 | } | |
920 | ||
921 | tracepoint_location = container_of(location, | |
922 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 JG |
923 | ret = tracepoint_location->binary_fd_handle ? |
924 | fd_handle_get_fd(tracepoint_location->binary_fd_handle) : -1; | |
f4d0bb2e FD |
925 | end: |
926 | return ret; | |
927 | } | |
928 | ||
1ce46cfe JG |
929 | static struct lttng_userspace_probe_location_lookup_method * |
930 | lttng_userspace_probe_location_function_get_lookup_method( | |
931 | const struct lttng_userspace_probe_location *location) | |
932 | { | |
933 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
934 | ||
935 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
936 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 937 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
938 | goto end; |
939 | } | |
940 | ||
941 | ret = location->lookup_method; | |
942 | end: | |
943 | return ret; | |
944 | } | |
945 | ||
f4d0bb2e FD |
946 | static struct lttng_userspace_probe_location_lookup_method * |
947 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
948 | const struct lttng_userspace_probe_location *location) | |
949 | { | |
950 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
951 | ||
952 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
953 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 954 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
955 | goto end; |
956 | } | |
957 | ||
958 | ret = location->lookup_method; | |
959 | end: | |
960 | return ret; | |
961 | } | |
962 | ||
87597c2c | 963 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
964 | lttng_userspace_probe_location_get_lookup_method( |
965 | const struct lttng_userspace_probe_location *location) | |
966 | { | |
967 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
968 | ||
a0377dfe | 969 | LTTNG_ASSERT(location); |
1ce46cfe JG |
970 | switch (location->type) { |
971 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
972 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
973 | location); | |
974 | break; | |
f4d0bb2e FD |
975 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
976 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
977 | location); | |
978 | break; | |
1ce46cfe JG |
979 | default: |
980 | ERR("Unknowned lookup method."); | |
981 | break; | |
982 | } | |
983 | return ret; | |
984 | } | |
985 | ||
986 | static | |
987 | int lttng_userspace_probe_location_lookup_method_serialize( | |
988 | struct lttng_userspace_probe_location_lookup_method *method, | |
e368fb43 | 989 | struct lttng_payload *payload) |
1ce46cfe JG |
990 | { |
991 | int ret; | |
992 | struct lttng_userspace_probe_location_lookup_method_comm | |
993 | lookup_method_comm; | |
994 | ||
995 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
996 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
e368fb43 JG |
997 | if (payload) { |
998 | ret = lttng_dynamic_buffer_append(&payload->buffer, &lookup_method_comm, | |
1ce46cfe JG |
999 | sizeof(lookup_method_comm)); |
1000 | if (ret) { | |
1001 | goto end; | |
1002 | } | |
1003 | } | |
f4d0bb2e FD |
1004 | ret = sizeof(lookup_method_comm); |
1005 | end: | |
1006 | return ret; | |
1007 | } | |
1008 | ||
1009 | static | |
1010 | int lttng_userspace_probe_location_function_serialize( | |
1011 | const struct lttng_userspace_probe_location *location, | |
e368fb43 | 1012 | struct lttng_payload *payload) |
f4d0bb2e FD |
1013 | { |
1014 | int ret; | |
1015 | size_t function_name_len, binary_path_len; | |
1016 | struct lttng_userspace_probe_location_function *location_function; | |
1017 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
1018 | ||
a0377dfe FD |
1019 | LTTNG_ASSERT(location); |
1020 | LTTNG_ASSERT(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e FD |
1021 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); |
1022 | ||
1023 | location_function = container_of(location, | |
1024 | struct lttng_userspace_probe_location_function, | |
1025 | parent); | |
1026 | if (!location_function->function_name || !location_function->binary_path) { | |
1027 | ret = -LTTNG_ERR_INVALID; | |
1028 | goto end; | |
1029 | } | |
1030 | ||
2cde0510 | 1031 | if (payload && !location_function->binary_fd_handle) { |
f4d0bb2e FD |
1032 | ret = -LTTNG_ERR_INVALID; |
1033 | goto end; | |
1034 | } | |
1035 | ||
f4d0bb2e FD |
1036 | function_name_len = strlen(location_function->function_name); |
1037 | if (function_name_len == 0) { | |
1038 | ret = -LTTNG_ERR_INVALID; | |
1039 | goto end; | |
1040 | } | |
1041 | binary_path_len = strlen(location_function->binary_path); | |
1042 | if (binary_path_len == 0) { | |
1043 | ret = -LTTNG_ERR_INVALID; | |
1044 | goto end; | |
1045 | } | |
1046 | ||
1047 | location_function_comm.function_name_len = function_name_len + 1; | |
1048 | location_function_comm.binary_path_len = binary_path_len + 1; | |
1049 | ||
e368fb43 JG |
1050 | if (payload) { |
1051 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1052 | &location_function_comm, |
1053 | sizeof(location_function_comm)); | |
1054 | if (ret) { | |
1055 | ret = -LTTNG_ERR_INVALID; | |
1056 | goto end; | |
1057 | } | |
e368fb43 | 1058 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1059 | location_function->function_name, |
1060 | location_function_comm.function_name_len); | |
1061 | if (ret) { | |
1062 | ret = -LTTNG_ERR_INVALID; | |
1063 | goto end; | |
1064 | } | |
e368fb43 | 1065 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1066 | location_function->binary_path, |
1067 | location_function_comm.binary_path_len); | |
1068 | if (ret) { | |
1069 | ret = -LTTNG_ERR_INVALID; | |
1070 | goto end; | |
1071 | } | |
fe489250 | 1072 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1073 | payload, location_function->binary_fd_handle); |
e368fb43 JG |
1074 | if (ret) { |
1075 | ret = -LTTNG_ERR_INVALID; | |
1076 | goto end; | |
1077 | } | |
f4d0bb2e FD |
1078 | } |
1079 | ret = sizeof(location_function_comm) + | |
1080 | location_function_comm.function_name_len + | |
1081 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
1082 | end: |
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | static | |
f4d0bb2e | 1087 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe | 1088 | const struct lttng_userspace_probe_location *location, |
e368fb43 | 1089 | struct lttng_payload *payload) |
1ce46cfe JG |
1090 | { |
1091 | int ret; | |
f4d0bb2e FD |
1092 | size_t probe_name_len, provider_name_len, binary_path_len; |
1093 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
1094 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe | 1095 | |
a0377dfe FD |
1096 | LTTNG_ASSERT(location); |
1097 | LTTNG_ASSERT(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 1098 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 1099 | |
f4d0bb2e FD |
1100 | location_tracepoint = container_of(location, |
1101 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 1102 | parent); |
f4d0bb2e FD |
1103 | if (!location_tracepoint->probe_name || |
1104 | !location_tracepoint->provider_name || | |
1105 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
1106 | ret = -LTTNG_ERR_INVALID; |
1107 | goto end; | |
1108 | } | |
1109 | ||
2cde0510 | 1110 | if (payload && !location_tracepoint->binary_fd_handle) { |
1ce46cfe JG |
1111 | ret = -LTTNG_ERR_INVALID; |
1112 | goto end; | |
1113 | } | |
1114 | ||
f4d0bb2e FD |
1115 | probe_name_len = strlen(location_tracepoint->probe_name); |
1116 | if (probe_name_len == 0) { | |
1ce46cfe JG |
1117 | ret = -LTTNG_ERR_INVALID; |
1118 | goto end; | |
1119 | } | |
f4d0bb2e FD |
1120 | |
1121 | provider_name_len = strlen(location_tracepoint->provider_name); | |
1122 | if (provider_name_len == 0) { | |
1123 | ret = -LTTNG_ERR_INVALID; | |
1124 | goto end; | |
1125 | } | |
1126 | ||
1127 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
1128 | if (binary_path_len == 0) { |
1129 | ret = -LTTNG_ERR_INVALID; | |
1130 | goto end; | |
1131 | } | |
1132 | ||
f4d0bb2e FD |
1133 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
1134 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
1135 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe | 1136 | |
e368fb43 JG |
1137 | if (payload) { |
1138 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1139 | &location_tracepoint_comm, |
1140 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
1141 | if (ret) { |
1142 | ret = -LTTNG_ERR_INVALID; | |
1143 | goto end; | |
1144 | } | |
e368fb43 | 1145 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1146 | location_tracepoint->probe_name, |
1147 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
1148 | if (ret) { |
1149 | ret = -LTTNG_ERR_INVALID; | |
1150 | goto end; | |
1151 | } | |
e368fb43 | 1152 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1153 | location_tracepoint->provider_name, |
1154 | location_tracepoint_comm.provider_name_len); | |
1155 | if (ret) { | |
1156 | ret = -LTTNG_ERR_INVALID; | |
1157 | goto end; | |
1158 | } | |
e368fb43 | 1159 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1160 | location_tracepoint->binary_path, |
1161 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
1162 | if (ret) { |
1163 | ret = -LTTNG_ERR_INVALID; | |
1164 | goto end; | |
1165 | } | |
fe489250 | 1166 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1167 | payload, location_tracepoint->binary_fd_handle); |
e368fb43 JG |
1168 | if (ret) { |
1169 | ret = -LTTNG_ERR_INVALID; | |
1170 | goto end; | |
1171 | } | |
1ce46cfe | 1172 | } |
e368fb43 | 1173 | |
f4d0bb2e FD |
1174 | ret = sizeof(location_tracepoint_comm) + |
1175 | location_tracepoint_comm.probe_name_len + | |
1176 | location_tracepoint_comm.provider_name_len + | |
1177 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1178 | end: |
1179 | return ret; | |
1180 | } | |
1181 | ||
1182 | LTTNG_HIDDEN | |
1183 | int lttng_userspace_probe_location_serialize( | |
1184 | const struct lttng_userspace_probe_location *location, | |
e368fb43 | 1185 | struct lttng_payload *payload) |
1ce46cfe JG |
1186 | { |
1187 | int ret, buffer_use = 0; | |
1188 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1189 | ||
1190 | if (!location) { | |
f04a8200 | 1191 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
1192 | ret = -LTTNG_ERR_INVALID; |
1193 | goto end; | |
1194 | } | |
1195 | ||
56f0bc67 JG |
1196 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1197 | ||
1ce46cfe | 1198 | location_generic_comm.type = (int8_t) location->type; |
e368fb43 JG |
1199 | if (payload) { |
1200 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
1201 | &location_generic_comm, | |
1ce46cfe JG |
1202 | sizeof(location_generic_comm)); |
1203 | if (ret) { | |
1204 | goto end; | |
1205 | } | |
1206 | } | |
1207 | buffer_use += sizeof(location_generic_comm); | |
1208 | ||
1209 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1210 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1211 | ret = lttng_userspace_probe_location_function_serialize( | |
e368fb43 | 1212 | location, payload); |
1ce46cfe | 1213 | break; |
f4d0bb2e FD |
1214 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1215 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
e368fb43 | 1216 | location, payload); |
f4d0bb2e | 1217 | break; |
1ce46cfe JG |
1218 | default: |
1219 | ERR("Unsupported probe location type"); | |
1220 | ret = -LTTNG_ERR_INVALID; | |
1221 | goto end; | |
1222 | } | |
1223 | if (ret < 0) { | |
1224 | goto end; | |
1225 | } | |
1226 | buffer_use += ret; | |
1227 | ||
1228 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
e368fb43 | 1229 | location->lookup_method, payload); |
1ce46cfe JG |
1230 | if (ret < 0) { |
1231 | goto end; | |
1232 | } | |
1233 | ret += buffer_use; | |
1234 | end: | |
1235 | return ret; | |
1236 | } | |
1237 | ||
1238 | static | |
e368fb43 JG |
1239 | int lttng_userspace_probe_location_function_create_from_payload( |
1240 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1241 | struct lttng_userspace_probe_location **location) |
1242 | { | |
1243 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1244 | const char *function_name_src, *binary_path_src; | |
1245 | char *function_name = NULL, *binary_path = NULL; | |
1246 | int ret = 0; | |
e368fb43 | 1247 | size_t expected_size; |
2cde0510 | 1248 | struct fd_handle *binary_fd_handle = lttng_payload_view_pop_fd_handle(view); |
1ce46cfe | 1249 | |
a0377dfe | 1250 | LTTNG_ASSERT(location); |
1ce46cfe | 1251 | |
e368fb43 JG |
1252 | if (view->buffer.size < sizeof(*location_function_comm)) { |
1253 | ret = -LTTNG_ERR_INVALID; | |
1254 | goto end; | |
1255 | } | |
1256 | ||
1ce46cfe | 1257 | location_function_comm = |
e368fb43 | 1258 | (typeof(location_function_comm)) view->buffer.data; |
1ce46cfe | 1259 | |
e368fb43 | 1260 | expected_size = sizeof(*location_function_comm) + |
1ce46cfe JG |
1261 | location_function_comm->function_name_len + |
1262 | location_function_comm->binary_path_len; | |
1263 | ||
e368fb43 | 1264 | if (view->buffer.size < expected_size) { |
1ce46cfe JG |
1265 | ret = -LTTNG_ERR_INVALID; |
1266 | goto end; | |
1267 | } | |
1268 | ||
e368fb43 | 1269 | function_name_src = view->buffer.data + sizeof(*location_function_comm); |
1ce46cfe JG |
1270 | binary_path_src = function_name_src + |
1271 | location_function_comm->function_name_len; | |
1272 | ||
48c24aea JG |
1273 | if (!lttng_buffer_view_contains_string(&view->buffer, function_name_src, |
1274 | location_function_comm->function_name_len)) { | |
1ce46cfe JG |
1275 | ret = -LTTNG_ERR_INVALID; |
1276 | goto end; | |
1277 | } | |
48c24aea JG |
1278 | |
1279 | if (!lttng_buffer_view_contains_string(&view->buffer, binary_path_src, | |
1280 | location_function_comm->binary_path_len)) { | |
1ce46cfe JG |
1281 | ret = -LTTNG_ERR_INVALID; |
1282 | goto end; | |
1283 | } | |
1284 | ||
1285 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1286 | if (!function_name) { | |
1287 | PERROR("lttng_strndup"); | |
2aa28610 | 1288 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1289 | goto end; |
1290 | } | |
1291 | ||
1292 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1293 | if (!binary_path) { | |
1294 | PERROR("lttng_strndup"); | |
2aa28610 | 1295 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1296 | goto end; |
1297 | } | |
1298 | ||
1299 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1300 | binary_path, function_name, NULL, false); | |
1301 | if (!(*location)) { | |
1302 | ret = -LTTNG_ERR_INVALID; | |
1303 | goto end; | |
1304 | } | |
1305 | ||
2cde0510 JG |
1306 | ret = lttng_userspace_probe_location_function_set_binary_fd_handle( |
1307 | *location, binary_fd_handle); | |
e368fb43 | 1308 | if (ret) { |
e368fb43 JG |
1309 | ret = -LTTNG_ERR_INVALID; |
1310 | goto end; | |
1311 | } | |
1312 | ||
1ce46cfe JG |
1313 | ret = (int) expected_size; |
1314 | end: | |
2cde0510 | 1315 | fd_handle_put(binary_fd_handle); |
1ce46cfe JG |
1316 | free(function_name); |
1317 | free(binary_path); | |
1318 | return ret; | |
1319 | } | |
1320 | ||
f4d0bb2e | 1321 | static |
e368fb43 JG |
1322 | int lttng_userspace_probe_location_tracepoint_create_from_payload( |
1323 | struct lttng_payload_view *view, | |
f4d0bb2e FD |
1324 | struct lttng_userspace_probe_location **location) |
1325 | { | |
1326 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1327 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1328 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1329 | int ret = 0; | |
e368fb43 | 1330 | size_t expected_size; |
2cde0510 | 1331 | struct fd_handle *binary_fd_handle = lttng_payload_view_pop_fd_handle(view); |
f4d0bb2e | 1332 | |
a0377dfe | 1333 | LTTNG_ASSERT(location); |
f4d0bb2e | 1334 | |
2cde0510 | 1335 | if (!binary_fd_handle) { |
e368fb43 JG |
1336 | ret = -LTTNG_ERR_INVALID; |
1337 | goto end; | |
1338 | } | |
1339 | ||
1340 | if (view->buffer.size < sizeof(*location_tracepoint_comm)) { | |
1341 | ret = -LTTNG_ERR_INVALID; | |
1342 | goto end; | |
1343 | } | |
1344 | ||
f4d0bb2e | 1345 | location_tracepoint_comm = |
e368fb43 | 1346 | (typeof(location_tracepoint_comm)) view->buffer.data; |
f4d0bb2e | 1347 | |
e368fb43 | 1348 | expected_size = sizeof(*location_tracepoint_comm) + |
f4d0bb2e FD |
1349 | location_tracepoint_comm->probe_name_len + |
1350 | location_tracepoint_comm->provider_name_len + | |
1351 | location_tracepoint_comm->binary_path_len; | |
1352 | ||
e368fb43 | 1353 | if (view->buffer.size < expected_size) { |
f4d0bb2e FD |
1354 | ret = -LTTNG_ERR_INVALID; |
1355 | goto end; | |
1356 | } | |
1357 | ||
e368fb43 | 1358 | probe_name_src = view->buffer.data + sizeof(*location_tracepoint_comm); |
f4d0bb2e FD |
1359 | provider_name_src = probe_name_src + |
1360 | location_tracepoint_comm->probe_name_len; | |
1361 | binary_path_src = provider_name_src + | |
1362 | location_tracepoint_comm->provider_name_len; | |
1363 | ||
48c24aea JG |
1364 | if (!lttng_buffer_view_contains_string(&view->buffer, probe_name_src, |
1365 | location_tracepoint_comm->probe_name_len)) { | |
f4d0bb2e FD |
1366 | ret = -LTTNG_ERR_INVALID; |
1367 | goto end; | |
1368 | } | |
1369 | ||
48c24aea JG |
1370 | if (!lttng_buffer_view_contains_string(&view->buffer, provider_name_src, |
1371 | location_tracepoint_comm->provider_name_len)) { | |
f4d0bb2e FD |
1372 | ret = -LTTNG_ERR_INVALID; |
1373 | goto end; | |
1374 | } | |
1375 | ||
48c24aea JG |
1376 | if (!lttng_buffer_view_contains_string(&view->buffer, binary_path_src, |
1377 | location_tracepoint_comm->binary_path_len)) { | |
f4d0bb2e FD |
1378 | ret = -LTTNG_ERR_INVALID; |
1379 | goto end; | |
1380 | } | |
1381 | ||
1382 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1383 | if (!probe_name) { | |
1384 | PERROR("lttng_strndup"); | |
1385 | goto end; | |
1386 | } | |
1387 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1388 | if (!provider_name) { | |
1389 | PERROR("lttng_strndup"); | |
1390 | goto end; | |
1391 | } | |
1392 | ||
b45a2969 | 1393 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); |
f4d0bb2e FD |
1394 | if (!binary_path) { |
1395 | PERROR("lttng_strndup"); | |
1396 | goto end; | |
1397 | } | |
1398 | ||
1399 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1400 | binary_path, provider_name, probe_name, NULL, false); | |
1401 | if (!(*location)) { | |
1402 | ret = -LTTNG_ERR_INVALID; | |
1403 | goto end; | |
1404 | } | |
1405 | ||
2cde0510 JG |
1406 | ret = lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
1407 | *location, binary_fd_handle); | |
e368fb43 | 1408 | if (ret) { |
e368fb43 JG |
1409 | ret = -LTTNG_ERR_INVALID; |
1410 | goto end; | |
1411 | } | |
1412 | ||
f4d0bb2e FD |
1413 | ret = (int) expected_size; |
1414 | end: | |
2cde0510 | 1415 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
1416 | free(probe_name); |
1417 | free(provider_name); | |
1418 | free(binary_path); | |
1419 | return ret; | |
1420 | } | |
1421 | ||
1ce46cfe | 1422 | static |
e368fb43 JG |
1423 | int lttng_userspace_probe_location_lookup_method_create_from_payload( |
1424 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1425 | struct lttng_userspace_probe_location_lookup_method **lookup_method) |
1426 | { | |
1427 | int ret; | |
1428 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1429 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1430 | ||
a0377dfe FD |
1431 | LTTNG_ASSERT(view); |
1432 | LTTNG_ASSERT(lookup_method); | |
1ce46cfe | 1433 | |
e368fb43 | 1434 | if (view->buffer.size < sizeof(*lookup_comm)) { |
1ce46cfe JG |
1435 | ret = -LTTNG_ERR_INVALID; |
1436 | goto end; | |
1437 | } | |
1438 | ||
e368fb43 | 1439 | lookup_comm = (typeof(lookup_comm)) view->buffer.data; |
1ce46cfe JG |
1440 | type = (enum lttng_userspace_probe_location_lookup_method_type) |
1441 | lookup_comm->type; | |
1442 | switch (type) { | |
1443 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1444 | *lookup_method = NULL; | |
1445 | break; | |
1446 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1447 | *lookup_method = | |
1448 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1449 | if (!(*lookup_method)) { | |
1450 | ret = -LTTNG_ERR_INVALID; | |
1451 | goto end; | |
1452 | } | |
1453 | break; | |
f4d0bb2e FD |
1454 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1455 | *lookup_method = | |
1456 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1457 | if (!(*lookup_method)) { | |
1458 | ret = -LTTNG_ERR_INVALID; | |
1459 | goto end; | |
1460 | } | |
1461 | break; | |
1ce46cfe JG |
1462 | default: |
1463 | ret = -LTTNG_ERR_INVALID; | |
1464 | goto end; | |
1465 | } | |
1466 | ||
1467 | ret = sizeof(*lookup_comm); | |
1468 | end: | |
1469 | return ret; | |
1470 | } | |
1471 | ||
1472 | LTTNG_HIDDEN | |
e368fb43 JG |
1473 | int lttng_userspace_probe_location_create_from_payload( |
1474 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1475 | struct lttng_userspace_probe_location **location) |
1476 | { | |
1477 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1ce46cfe | 1478 | enum lttng_userspace_probe_location_type type; |
1ce46cfe JG |
1479 | int consumed = 0; |
1480 | int ret; | |
3e6e0df2 JG |
1481 | struct lttng_userspace_probe_location_comm *probe_location_comm; |
1482 | struct lttng_payload_view probe_location_comm_view = | |
1483 | lttng_payload_view_from_view( | |
1484 | view, 0, sizeof(*probe_location_comm)); | |
1ce46cfe | 1485 | |
a0377dfe FD |
1486 | LTTNG_ASSERT(view); |
1487 | LTTNG_ASSERT(location); | |
1ce46cfe JG |
1488 | |
1489 | lookup_method = NULL; | |
1490 | ||
3e6e0df2 | 1491 | if (!lttng_payload_view_is_valid(&probe_location_comm_view)) { |
1ce46cfe JG |
1492 | ret = -LTTNG_ERR_INVALID; |
1493 | goto end; | |
1494 | } | |
1495 | ||
3e6e0df2 | 1496 | probe_location_comm = (typeof(probe_location_comm)) probe_location_comm_view.buffer.data; |
1ce46cfe JG |
1497 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; |
1498 | consumed += sizeof(*probe_location_comm); | |
1499 | ||
1500 | switch (type) { | |
1501 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1502 | { | |
e368fb43 JG |
1503 | struct lttng_payload_view location_view = |
1504 | lttng_payload_view_from_view( | |
1505 | view, consumed, -1); | |
1ce46cfe | 1506 | |
e368fb43 JG |
1507 | ret = lttng_userspace_probe_location_function_create_from_payload( |
1508 | &location_view, location); | |
1ce46cfe JG |
1509 | if (ret < 0) { |
1510 | goto end; | |
1511 | } | |
1512 | break; | |
1513 | } | |
f4d0bb2e FD |
1514 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1515 | { | |
e368fb43 JG |
1516 | struct lttng_payload_view location_view = |
1517 | lttng_payload_view_from_view(view, consumed, -1); | |
f4d0bb2e | 1518 | |
e368fb43 JG |
1519 | ret = lttng_userspace_probe_location_tracepoint_create_from_payload( |
1520 | &location_view, location); | |
f4d0bb2e FD |
1521 | if (ret < 0) { |
1522 | goto end; | |
1523 | } | |
1524 | break; | |
1525 | } | |
1ce46cfe JG |
1526 | default: |
1527 | ret = -LTTNG_ERR_INVALID; | |
1528 | goto end; | |
1529 | } | |
1530 | ||
1531 | consumed += ret; | |
e368fb43 | 1532 | if (view->buffer.size <= consumed) { |
1ce46cfe JG |
1533 | ret = -LTTNG_ERR_INVALID; |
1534 | goto end; | |
1535 | } | |
1536 | ||
e368fb43 JG |
1537 | { |
1538 | struct lttng_payload_view lookup_method_view = | |
1539 | lttng_payload_view_from_view( | |
1540 | view, consumed, -1); | |
1541 | ||
1542 | ret = lttng_userspace_probe_location_lookup_method_create_from_payload( | |
1543 | &lookup_method_view, &lookup_method); | |
1544 | } | |
1ce46cfe JG |
1545 | if (ret < 0) { |
1546 | ret = -LTTNG_ERR_INVALID; | |
1547 | goto end; | |
1548 | } | |
1549 | ||
a0377dfe | 1550 | LTTNG_ASSERT(lookup_method); |
1ce46cfe JG |
1551 | (*location)->lookup_method = lookup_method; |
1552 | lookup_method = NULL; | |
1553 | ret += consumed; | |
1554 | end: | |
1555 | return ret; | |
1556 | } | |
1557 | ||
fe489250 | 1558 | static |
2cde0510 | 1559 | int lttng_userspace_probe_location_function_set_binary_fd_handle( |
fe489250 JG |
1560 | struct lttng_userspace_probe_location *location, |
1561 | struct fd_handle *binary_fd) | |
1ce46cfe JG |
1562 | { |
1563 | int ret = 0; | |
1564 | struct lttng_userspace_probe_location_function *function_location; | |
1565 | ||
a0377dfe FD |
1566 | LTTNG_ASSERT(location); |
1567 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1ce46cfe JG |
1568 | |
1569 | function_location = container_of(location, | |
1570 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 | 1571 | fd_handle_put(function_location->binary_fd_handle); |
fe489250 | 1572 | fd_handle_get(binary_fd); |
2cde0510 | 1573 | function_location->binary_fd_handle = binary_fd; |
1ce46cfe JG |
1574 | return ret; |
1575 | } | |
1576 | ||
fe489250 | 1577 | static |
2cde0510 | 1578 | int lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
fe489250 JG |
1579 | struct lttng_userspace_probe_location *location, |
1580 | struct fd_handle *binary_fd) | |
f4d0bb2e FD |
1581 | { |
1582 | int ret = 0; | |
1583 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1584 | ||
a0377dfe FD |
1585 | LTTNG_ASSERT(location); |
1586 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
f4d0bb2e FD |
1587 | |
1588 | tracepoint_location = container_of(location, | |
1589 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 | 1590 | fd_handle_put(tracepoint_location->binary_fd_handle); |
fe489250 | 1591 | fd_handle_get(binary_fd); |
2cde0510 | 1592 | tracepoint_location->binary_fd_handle = binary_fd; |
f4d0bb2e FD |
1593 | return ret; |
1594 | } | |
1595 | ||
1ce46cfe JG |
1596 | static |
1597 | int lttng_userspace_probe_location_function_flatten( | |
1598 | const struct lttng_userspace_probe_location *location, | |
1599 | struct lttng_dynamic_buffer *buffer) | |
1600 | { | |
1601 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1602 | struct lttng_userspace_probe_location_function *probe_function; | |
1603 | struct lttng_userspace_probe_location_function flat_probe; | |
1604 | size_t function_name_len, binary_path_len; | |
1605 | size_t padding_needed = 0; | |
1606 | char *flat_probe_start; | |
1607 | int storage_needed = 0; | |
1608 | int ret; | |
1609 | ||
a0377dfe | 1610 | LTTNG_ASSERT(location); |
1ce46cfe JG |
1611 | |
1612 | if (location->lookup_method && location->lookup_method->type != | |
1613 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1614 | ret = -LTTNG_ERR_INVALID; | |
1615 | goto end; | |
1616 | } | |
1617 | ||
1618 | probe_function = container_of(location, | |
1619 | struct lttng_userspace_probe_location_function, | |
1620 | parent); | |
a0377dfe FD |
1621 | LTTNG_ASSERT(probe_function->function_name); |
1622 | LTTNG_ASSERT(probe_function->binary_path); | |
1ce46cfe JG |
1623 | |
1624 | storage_needed += | |
1625 | sizeof(struct lttng_userspace_probe_location_function); | |
1626 | function_name_len = strlen(probe_function->function_name) + 1; | |
1627 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1628 | storage_needed += function_name_len + binary_path_len; | |
1629 | ||
1630 | /* | |
1631 | * The lookup method is aligned to 64-bit within the buffer. | |
1632 | * This is needed even if there is no lookup method since | |
1633 | * the next structure in the buffer probably needs to be | |
1634 | * aligned too (depending on the arch). | |
1635 | */ | |
1636 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1637 | storage_needed += padding_needed; | |
1638 | ||
1639 | if (location->lookup_method) { | |
1640 | /* NOTE: elf look-up method is assumed here. */ | |
1641 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1642 | } | |
1643 | ||
1644 | if (!buffer) { | |
1645 | ret = storage_needed; | |
1646 | goto end; | |
1647 | } | |
1648 | ||
1649 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1650 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1651 | buffer->size + storage_needed); | |
1652 | if (ret) { | |
1653 | goto end; | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1658 | ||
1659 | flat_probe_start = buffer->data + buffer->size; | |
1660 | flat_probe.parent.type = location->type; | |
1661 | /* | |
1662 | * The lookup method, if present, is the last element in the flat | |
1663 | * representation of the probe. | |
1664 | */ | |
1665 | if (location->lookup_method) { | |
1666 | flat_probe.parent.lookup_method = | |
1667 | (struct lttng_userspace_probe_location_lookup_method *) | |
1668 | (flat_probe_start + sizeof(flat_probe) + | |
1669 | function_name_len + binary_path_len + padding_needed); | |
1670 | } else { | |
1671 | flat_probe.parent.lookup_method = NULL; | |
1672 | } | |
1673 | ||
1674 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1675 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
2cde0510 | 1676 | flat_probe.binary_fd_handle = NULL; |
1ce46cfe JG |
1677 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, |
1678 | sizeof(flat_probe)); | |
1679 | if (ret) { | |
1680 | goto end; | |
1681 | } | |
1682 | ||
1683 | ret = lttng_dynamic_buffer_append(buffer, | |
1684 | probe_function->function_name, function_name_len); | |
1685 | if (ret) { | |
1686 | goto end; | |
1687 | } | |
1688 | ret = lttng_dynamic_buffer_append(buffer, | |
1689 | probe_function->binary_path, binary_path_len); | |
1690 | if (ret) { | |
1691 | goto end; | |
1692 | } | |
1693 | ||
1694 | /* Insert padding before the lookup method. */ | |
1695 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1696 | buffer->size + padding_needed); | |
1697 | if (ret) { | |
1698 | goto end; | |
1699 | } | |
1700 | ||
1701 | if (!location->lookup_method) { | |
1702 | /* Not an error, the default method is used. */ | |
1703 | ret = storage_needed; | |
1704 | goto end; | |
1705 | } | |
1706 | ||
1707 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1708 | flat_lookup_method.parent.type = | |
1709 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1710 | ret = lttng_dynamic_buffer_append(buffer, | |
1711 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1712 | if (ret) { | |
1713 | goto end; | |
1714 | } | |
1715 | ret = storage_needed; | |
1716 | end: | |
1717 | return ret; | |
1718 | } | |
1719 | ||
f4d0bb2e FD |
1720 | static |
1721 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1722 | const struct lttng_userspace_probe_location *location, | |
1723 | struct lttng_dynamic_buffer *buffer) | |
1724 | { | |
1725 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1726 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1727 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1728 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1729 | size_t padding_needed = 0; | |
1730 | int storage_needed = 0; | |
1731 | char *flat_probe_start; | |
1732 | int ret = 0; | |
1733 | ||
a0377dfe | 1734 | LTTNG_ASSERT(location); |
f4d0bb2e FD |
1735 | |
1736 | /* Only SDT tracepoints are supported at the moment */ | |
1737 | if (location->lookup_method && location->lookup_method->type != | |
1738 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1739 | ret = -LTTNG_ERR_INVALID; | |
1740 | goto end; | |
1741 | } | |
1742 | probe_tracepoint = container_of(location, | |
1743 | struct lttng_userspace_probe_location_tracepoint, | |
1744 | parent); | |
a0377dfe FD |
1745 | LTTNG_ASSERT(probe_tracepoint->probe_name); |
1746 | LTTNG_ASSERT(probe_tracepoint->provider_name); | |
1747 | LTTNG_ASSERT(probe_tracepoint->binary_path); | |
f4d0bb2e FD |
1748 | |
1749 | /* Compute the storage space needed to flatten the probe location */ | |
1750 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1751 | ||
1752 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1753 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1754 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1755 | ||
1756 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1757 | ||
1758 | /* | |
1759 | * The lookup method is aligned to 64-bit within the buffer. | |
1760 | * This is needed even if there is no lookup method since | |
1761 | * the next structure in the buffer probably needs to be | |
1762 | * aligned too (depending on the arch). | |
1763 | */ | |
1764 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1765 | storage_needed += padding_needed; | |
1766 | ||
1767 | if (location->lookup_method) { | |
1768 | /* NOTE: elf look-up method is assumed here. */ | |
1769 | storage_needed += | |
1770 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1775 | */ | |
1776 | if (!buffer) { | |
1777 | ret = storage_needed; | |
1778 | goto end; | |
1779 | } | |
1780 | ||
1781 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1782 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1783 | buffer->size + storage_needed); | |
1784 | if (ret) { | |
1785 | goto end; | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1790 | ||
1791 | flat_probe_start = buffer->data + buffer->size; | |
1792 | flat_probe.parent.type = location->type; | |
1793 | ||
1794 | /* | |
1795 | * The lookup method, if present, is the last element in the flat | |
1796 | * representation of the probe. | |
1797 | */ | |
1798 | if (location->lookup_method) { | |
1799 | flat_probe.parent.lookup_method = | |
1800 | (struct lttng_userspace_probe_location_lookup_method *) | |
1801 | (flat_probe_start + sizeof(flat_probe) + | |
1802 | probe_name_len + provider_name_len + | |
1803 | binary_path_len + padding_needed); | |
1804 | } else { | |
1805 | flat_probe.parent.lookup_method = NULL; | |
1806 | } | |
1807 | ||
1808 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1809 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1810 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
2cde0510 | 1811 | flat_probe.binary_fd_handle = NULL; |
f4d0bb2e FD |
1812 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); |
1813 | if (ret) { | |
1814 | goto end; | |
1815 | } | |
1816 | ||
1817 | /* Append all the fields to the buffer */ | |
1818 | ret = lttng_dynamic_buffer_append(buffer, | |
1819 | probe_tracepoint->probe_name, probe_name_len); | |
1820 | if (ret) { | |
1821 | goto end; | |
1822 | } | |
1823 | ret = lttng_dynamic_buffer_append(buffer, | |
1824 | probe_tracepoint->provider_name, provider_name_len); | |
1825 | if (ret) { | |
1826 | goto end; | |
1827 | } | |
1828 | ret = lttng_dynamic_buffer_append(buffer, | |
1829 | probe_tracepoint->binary_path, binary_path_len); | |
1830 | if (ret) { | |
1831 | goto end; | |
1832 | } | |
1833 | ||
1834 | /* Insert padding before the lookup method. */ | |
1835 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1836 | if (ret) { | |
1837 | goto end; | |
1838 | } | |
1839 | ||
1840 | if (!location->lookup_method) { | |
1841 | /* Not an error, the default method is used. */ | |
1842 | ret = storage_needed; | |
1843 | goto end; | |
1844 | } | |
1845 | ||
1846 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1847 | ||
1848 | flat_lookup_method.parent.type = | |
1849 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1850 | ret = lttng_dynamic_buffer_append(buffer, | |
1851 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1852 | if (ret) { | |
1853 | goto end; | |
1854 | } | |
1855 | ret = storage_needed; | |
1856 | end: | |
1857 | return ret; | |
1858 | } | |
1859 | ||
1ce46cfe JG |
1860 | LTTNG_HIDDEN |
1861 | int lttng_userspace_probe_location_flatten( | |
1862 | const struct lttng_userspace_probe_location *location, | |
1863 | struct lttng_dynamic_buffer *buffer) | |
1864 | { | |
1865 | int ret; | |
1866 | if (!location) { | |
1867 | ret = -LTTNG_ERR_INVALID; | |
1868 | goto end; | |
1869 | } | |
1870 | ||
1871 | /* Only types currently supported. */ | |
1872 | switch (location->type) { | |
1873 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1874 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1875 | break; | |
f4d0bb2e FD |
1876 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1877 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1878 | break; | |
1ce46cfe JG |
1879 | default: |
1880 | ret = -LTTNG_ERR_INVALID; | |
1881 | goto end; | |
1882 | } | |
1883 | ||
1884 | end: | |
1885 | return ret; | |
1886 | } | |
394357fe FD |
1887 | |
1888 | LTTNG_HIDDEN | |
1889 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1890 | const struct lttng_userspace_probe_location *location) | |
1891 | { | |
1892 | struct lttng_userspace_probe_location *new_location = NULL; | |
1893 | enum lttng_userspace_probe_location_type type; | |
1894 | ||
1895 | if (!location) { | |
1896 | goto err; | |
1897 | } | |
1898 | ||
1899 | type = lttng_userspace_probe_location_get_type(location); | |
1900 | switch (type) { | |
1901 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1902 | new_location = | |
1903 | lttng_userspace_probe_location_function_copy(location); | |
1904 | if (!new_location) { | |
1905 | goto err; | |
1906 | } | |
1907 | break; | |
f4d0bb2e FD |
1908 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1909 | new_location = | |
1910 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1911 | if (!new_location) { | |
1912 | goto err; | |
1913 | } | |
1914 | break; | |
394357fe FD |
1915 | default: |
1916 | new_location = NULL; | |
1917 | goto err; | |
1918 | } | |
1919 | err: | |
1920 | return new_location; | |
1921 | } | |
dfcfa983 JR |
1922 | |
1923 | LTTNG_HIDDEN | |
1924 | bool lttng_userspace_probe_location_lookup_method_is_equal( | |
1925 | const struct lttng_userspace_probe_location_lookup_method *a, | |
1926 | const struct lttng_userspace_probe_location_lookup_method *b) | |
1927 | { | |
1928 | bool is_equal = false; | |
1929 | ||
1930 | if (!a || !b) { | |
1931 | goto end; | |
1932 | } | |
1933 | ||
1934 | if (a == b) { | |
1935 | is_equal = true; | |
1936 | goto end; | |
1937 | } | |
1938 | ||
1939 | if (a->type != b->type) { | |
1940 | goto end; | |
1941 | } | |
1942 | ||
1943 | is_equal = true; | |
1944 | end: | |
1945 | return is_equal; | |
1946 | } | |
1947 | ||
1948 | LTTNG_HIDDEN | |
1949 | bool lttng_userspace_probe_location_is_equal( | |
1950 | const struct lttng_userspace_probe_location *a, | |
1951 | const struct lttng_userspace_probe_location *b) | |
1952 | { | |
1953 | bool is_equal = false; | |
1954 | ||
1955 | if (!a || !b) { | |
1956 | goto end; | |
1957 | } | |
1958 | ||
1959 | if (a == b) { | |
1960 | is_equal = true; | |
1961 | goto end; | |
1962 | } | |
1963 | ||
1964 | if (!lttng_userspace_probe_location_lookup_method_is_equal( | |
1965 | a->lookup_method, b->lookup_method)) { | |
1966 | goto end; | |
1967 | } | |
1968 | ||
1969 | if (a->type != b->type) { | |
1970 | goto end; | |
1971 | } | |
1972 | ||
1973 | is_equal = a->equal ? a->equal(a, b) : true; | |
1974 | end: | |
1975 | return is_equal; | |
1976 | } | |
959e3c66 JR |
1977 | |
1978 | LTTNG_HIDDEN | |
1979 | unsigned long lttng_userspace_probe_location_hash( | |
1980 | const struct lttng_userspace_probe_location *location) | |
1981 | { | |
1982 | return location->hash(location); | |
1983 | } | |
6a751b95 JR |
1984 | |
1985 | LTTNG_HIDDEN | |
1986 | enum lttng_error_code lttng_userspace_probe_location_mi_serialize( | |
1987 | const struct lttng_userspace_probe_location *location, | |
1988 | struct mi_writer *writer) | |
1989 | { | |
1990 | typedef enum lttng_error_code (*mi_fp)( | |
1991 | const struct lttng_userspace_probe_location *, | |
1992 | struct mi_writer *); | |
1993 | ||
1994 | int ret; | |
1995 | enum lttng_error_code ret_code; | |
1996 | mi_fp mi_function = NULL; | |
1997 | ||
a0377dfe FD |
1998 | LTTNG_ASSERT(location); |
1999 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2000 | |
2001 | switch (lttng_userspace_probe_location_get_type(location)) { | |
2002 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
2003 | mi_function = lttng_userspace_probe_location_function_mi_serialize; | |
2004 | break; | |
2005 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
2006 | mi_function = lttng_userspace_probe_location_tracepoint_mi_serialize; | |
2007 | break; | |
2008 | default: | |
2009 | abort(); | |
2010 | break; | |
2011 | } | |
2012 | ||
2013 | /* Open userspace probe location element. */ | |
2014 | ret = mi_lttng_writer_open_element( | |
2015 | writer, mi_lttng_element_userspace_probe_location); | |
2016 | if (ret) { | |
2017 | goto mi_error; | |
2018 | } | |
2019 | ||
2020 | /* Underlying user space probe location. */ | |
2021 | ret_code = mi_function(location, writer); | |
2022 | if (ret_code != LTTNG_OK) { | |
2023 | goto end; | |
2024 | } | |
2025 | ||
2026 | /* Close userspace probe location element. */ | |
2027 | ret = mi_lttng_writer_close_element(writer); | |
2028 | if (ret) { | |
2029 | goto mi_error; | |
2030 | } | |
2031 | ||
2032 | ret_code = LTTNG_OK; | |
2033 | goto end; | |
2034 | ||
2035 | mi_error: | |
2036 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2037 | end: | |
2038 | return ret_code; | |
2039 | } | |
2040 | ||
2041 | enum lttng_error_code lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2042 | const struct lttng_userspace_probe_location_lookup_method | |
2043 | *method, | |
2044 | struct mi_writer *writer) | |
2045 | { | |
2046 | int ret; | |
2047 | enum lttng_error_code ret_code; | |
2048 | const char *type_element_str; | |
2049 | ||
a0377dfe FD |
2050 | LTTNG_ASSERT(method); |
2051 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2052 | |
2053 | switch (lttng_userspace_probe_location_lookup_method_get_type(method)) { | |
2054 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
2055 | type_element_str = | |
2056 | mi_lttng_element_userspace_probe_location_lookup_method_function_default; | |
2057 | break; | |
2058 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
2059 | type_element_str = | |
2060 | mi_lttng_element_userspace_probe_location_lookup_method_function_elf; | |
2061 | break; | |
2062 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
2063 | type_element_str = | |
2064 | mi_lttng_element_userspace_probe_location_lookup_method_tracepoint_sdt; | |
2065 | break; | |
2066 | default: | |
2067 | abort(); | |
2068 | break; | |
2069 | } | |
2070 | ||
2071 | /* Open userspace probe location lookup method element. */ | |
2072 | ret = mi_lttng_writer_open_element(writer, | |
2073 | mi_lttng_element_userspace_probe_location_lookup_method); | |
2074 | if (ret) { | |
2075 | goto mi_error; | |
2076 | } | |
2077 | ||
2078 | /* User space probe location lookup method empty element. */ | |
2079 | ret = mi_lttng_writer_open_element(writer, type_element_str); | |
2080 | if (ret) { | |
2081 | goto mi_error; | |
2082 | } | |
2083 | ||
2084 | /* Close userspace probe location lookup method element. */ | |
2085 | ret = mi_lttng_close_multi_element(writer, 2); | |
2086 | if (ret) { | |
2087 | goto mi_error; | |
2088 | } | |
2089 | ||
2090 | ret_code = LTTNG_OK; | |
2091 | goto end; | |
2092 | ||
2093 | mi_error: | |
2094 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2095 | end: | |
2096 | return ret_code; | |
2097 | } | |
2098 | ||
2099 | static enum lttng_error_code lttng_userspace_probe_location_tracepoint_mi_serialize( | |
2100 | const struct lttng_userspace_probe_location *location, | |
2101 | struct mi_writer *writer) | |
2102 | { | |
2103 | int ret; | |
2104 | enum lttng_error_code ret_code; | |
2105 | const char *probe_name = NULL; | |
2106 | const char *provider_name = NULL; | |
2107 | const char *binary_path = NULL; | |
2108 | const struct lttng_userspace_probe_location_lookup_method | |
2109 | *lookup_method = NULL; | |
2110 | ||
a0377dfe FD |
2111 | LTTNG_ASSERT(location); |
2112 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2113 | |
2114 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name( | |
2115 | location); | |
2116 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name( | |
2117 | location); | |
2118 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path( | |
2119 | location); | |
2120 | lookup_method = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
2121 | location); | |
2122 | ||
2123 | /* Open userspace probe location tracepoint element. */ | |
2124 | ret = mi_lttng_writer_open_element(writer, | |
2125 | mi_lttng_element_userspace_probe_location_tracepoint); | |
2126 | if (ret) { | |
2127 | goto mi_error; | |
2128 | } | |
2129 | ||
2130 | /* Probe name. */ | |
2131 | ret = mi_lttng_writer_write_element_string(writer, | |
2132 | mi_lttng_element_userspace_probe_location_tracepoint_probe_name, | |
2133 | probe_name); | |
2134 | if (ret) { | |
2135 | goto mi_error; | |
2136 | } | |
2137 | ||
2138 | /* Provider name. */ | |
2139 | ret = mi_lttng_writer_write_element_string(writer, | |
2140 | mi_lttng_element_userspace_probe_location_tracepoint_provider_name, | |
2141 | provider_name); | |
2142 | if (ret) { | |
2143 | goto mi_error; | |
2144 | } | |
2145 | ||
2146 | /* Binary path. */ | |
2147 | ret = mi_lttng_writer_write_element_string(writer, | |
2148 | mi_lttng_element_userspace_probe_location_binary_path, | |
2149 | binary_path); | |
2150 | if (ret) { | |
2151 | goto mi_error; | |
2152 | } | |
2153 | ||
2154 | /* The lookup method. */ | |
2155 | ret_code = lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2156 | lookup_method, writer); | |
2157 | if (ret_code != LTTNG_OK) { | |
2158 | goto end; | |
2159 | } | |
2160 | ||
2161 | /* Close userspace probe location tracepoint. */ | |
2162 | ret = mi_lttng_writer_close_element(writer); | |
2163 | if (ret) { | |
2164 | goto mi_error; | |
2165 | } | |
2166 | ||
2167 | ret_code = LTTNG_OK; | |
2168 | goto end; | |
2169 | ||
2170 | mi_error: | |
2171 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2172 | end: | |
2173 | return ret_code; | |
2174 | } | |
2175 | ||
2176 | static enum lttng_error_code lttng_userspace_probe_location_function_mi_serialize( | |
2177 | const struct lttng_userspace_probe_location *location, | |
2178 | struct mi_writer *writer) | |
2179 | { | |
2180 | int ret; | |
2181 | enum lttng_error_code ret_code; | |
2182 | const char *function_name = NULL; | |
2183 | const char *binary_path = NULL; | |
2184 | const char *instrumentation_type_str = NULL; | |
2185 | enum lttng_userspace_probe_location_function_instrumentation_type | |
2186 | instrumentation_type; | |
2187 | const struct lttng_userspace_probe_location_lookup_method | |
2188 | *lookup_method = NULL; | |
2189 | ||
a0377dfe FD |
2190 | LTTNG_ASSERT(location); |
2191 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2192 | |
2193 | function_name = lttng_userspace_probe_location_function_get_function_name( | |
2194 | location); | |
2195 | binary_path = lttng_userspace_probe_location_function_get_binary_path( | |
2196 | location); | |
2197 | instrumentation_type = | |
2198 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
2199 | location); | |
2200 | lookup_method = lttng_userspace_probe_location_function_get_lookup_method( | |
2201 | location); | |
2202 | ||
2203 | switch (instrumentation_type) { | |
2204 | case LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY: | |
2205 | instrumentation_type_str = | |
2206 | mi_lttng_userspace_probe_location_function_instrumentation_type_entry; | |
2207 | break; | |
2208 | default: | |
2209 | abort(); | |
2210 | break; | |
2211 | } | |
2212 | ||
2213 | /* Open userspace probe location function element. */ | |
2214 | ret = mi_lttng_writer_open_element(writer, | |
2215 | mi_lttng_element_userspace_probe_location_function); | |
2216 | if (ret) { | |
2217 | goto mi_error; | |
2218 | } | |
2219 | ||
2220 | /* Function name. */ | |
2221 | ret = mi_lttng_writer_write_element_string(writer, | |
2222 | mi_lttng_element_userspace_probe_location_function_name, | |
2223 | function_name); | |
2224 | if (ret) { | |
2225 | goto mi_error; | |
2226 | } | |
2227 | ||
2228 | /* Binary path. */ | |
2229 | ret = mi_lttng_writer_write_element_string(writer, | |
2230 | mi_lttng_element_userspace_probe_location_binary_path, | |
2231 | binary_path); | |
2232 | if (ret) { | |
2233 | goto mi_error; | |
2234 | } | |
2235 | ||
2236 | /* Instrumentation type. */ | |
2237 | ret = mi_lttng_writer_write_element_string(writer, | |
2238 | mi_lttng_element_userspace_probe_location_function_instrumentation_type, | |
2239 | instrumentation_type_str); | |
2240 | if (ret) { | |
2241 | goto mi_error; | |
2242 | } | |
2243 | ||
2244 | /* The lookup method. */ | |
2245 | ret_code = lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2246 | lookup_method, writer); | |
2247 | if (ret_code != LTTNG_OK) { | |
2248 | goto end; | |
2249 | } | |
2250 | ||
2251 | /* Close userspace probe location function element. */ | |
2252 | ret = mi_lttng_writer_close_element(writer); | |
2253 | if (ret) { | |
2254 | goto mi_error; | |
2255 | } | |
2256 | ||
2257 | ret_code = LTTNG_OK; | |
2258 | goto end; | |
2259 | ||
2260 | mi_error: | |
2261 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2262 | end: | |
2263 | return ret_code; | |
2264 | } |