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> |
1cbd136b | 10 | #include <common/align.h> |
1ce46cfe | 11 | #include <common/error.h> |
959e3c66 JR |
12 | #include <common/hashtable/hashtable.h> |
13 | #include <common/hashtable/utils.h> | |
6a751b95 JR |
14 | #include <common/macros.h> |
15 | #include <common/mi-lttng.h> | |
16 | #include <common/payload-view.h> | |
17 | #include <common/payload.h> | |
1ce46cfe JG |
18 | #include <fcntl.h> |
19 | #include <lttng/constant.h> | |
20 | #include <lttng/userspace-probe-internal.h> | |
dfcfa983 JR |
21 | #include <sys/stat.h> |
22 | #include <sys/types.h> | |
8f14767d | 23 | #include <unistd.h> |
1ce46cfe | 24 | |
fe489250 | 25 | static |
2cde0510 | 26 | int lttng_userspace_probe_location_function_set_binary_fd_handle( |
fe489250 | 27 | struct lttng_userspace_probe_location *location, |
2cde0510 | 28 | struct fd_handle *binary_fd_handle); |
fe489250 JG |
29 | |
30 | static | |
2cde0510 | 31 | int lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
fe489250 | 32 | struct lttng_userspace_probe_location *location, |
2cde0510 | 33 | struct fd_handle *binary_fd_handle); |
fe489250 | 34 | |
6a751b95 JR |
35 | static |
36 | enum lttng_error_code lttng_userspace_probe_location_lookup_method_mi_serialize( | |
37 | const struct lttng_userspace_probe_location_lookup_method | |
38 | *method, | |
39 | struct mi_writer *writer); | |
40 | ||
41 | static | |
42 | enum lttng_error_code lttng_userspace_probe_location_tracepoint_mi_serialize( | |
43 | const struct lttng_userspace_probe_location *location, | |
44 | struct mi_writer *writer); | |
45 | ||
46 | static | |
47 | enum lttng_error_code lttng_userspace_probe_location_function_mi_serialize( | |
48 | const struct lttng_userspace_probe_location *location, | |
49 | struct mi_writer *writer); | |
50 | ||
1ce46cfe JG |
51 | enum lttng_userspace_probe_location_lookup_method_type |
52 | lttng_userspace_probe_location_lookup_method_get_type( | |
53 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
54 | { | |
55 | return lookup_method ? lookup_method->type : | |
56 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
57 | } | |
58 | ||
59 | void lttng_userspace_probe_location_lookup_method_destroy( | |
60 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
61 | { | |
62 | if (!lookup_method){ | |
63 | return; | |
64 | } | |
65 | ||
5d21f143 | 66 | free(lookup_method); |
1ce46cfe JG |
67 | } |
68 | ||
69 | struct lttng_userspace_probe_location_lookup_method * | |
70 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
71 | { | |
72 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
73 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
74 | ||
a6bc4ca9 | 75 | elf_method = (lttng_userspace_probe_location_lookup_method_elf *) zmalloc(sizeof(*elf_method)); |
1ce46cfe JG |
76 | if (!elf_method) { |
77 | PERROR("zmalloc"); | |
78 | goto end; | |
79 | } | |
80 | ||
81 | ret = &elf_method->parent; | |
82 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
83 | end: | |
84 | return ret; | |
85 | } | |
86 | ||
f4d0bb2e FD |
87 | struct lttng_userspace_probe_location_lookup_method * |
88 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
89 | { | |
90 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
91 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
92 | ||
a6bc4ca9 | 93 | sdt_method = (lttng_userspace_probe_location_lookup_method_sdt *) zmalloc(sizeof(*sdt_method)); |
f4d0bb2e FD |
94 | if (!sdt_method) { |
95 | PERROR("zmalloc"); | |
96 | goto end; | |
97 | } | |
98 | ||
99 | ret = &sdt_method->parent; | |
100 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
101 | end: | |
102 | return ret; | |
103 | } | |
104 | ||
1ce46cfe JG |
105 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
106 | const struct lttng_userspace_probe_location *location) | |
107 | { | |
108 | return location ? location->type : | |
109 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
110 | } | |
111 | ||
112 | static | |
113 | void lttng_userspace_probe_location_function_destroy( | |
114 | struct lttng_userspace_probe_location *location) | |
115 | { | |
116 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
117 | ||
a0377dfe | 118 | LTTNG_ASSERT(location); |
1ce46cfe JG |
119 | |
120 | location_function = container_of(location, | |
121 | struct lttng_userspace_probe_location_function, parent); | |
122 | ||
a0377dfe | 123 | LTTNG_ASSERT(location_function); |
1ce46cfe JG |
124 | |
125 | free(location_function->function_name); | |
126 | free(location_function->binary_path); | |
2cde0510 | 127 | fd_handle_put(location_function->binary_fd_handle); |
1ce46cfe JG |
128 | free(location); |
129 | } | |
130 | ||
f4d0bb2e FD |
131 | static |
132 | void lttng_userspace_probe_location_tracepoint_destroy( | |
133 | struct lttng_userspace_probe_location *location) | |
134 | { | |
135 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
136 | ||
a0377dfe | 137 | LTTNG_ASSERT(location); |
f4d0bb2e FD |
138 | |
139 | location_tracepoint = container_of(location, | |
140 | struct lttng_userspace_probe_location_tracepoint, | |
141 | parent); | |
142 | ||
a0377dfe | 143 | LTTNG_ASSERT(location_tracepoint); |
f4d0bb2e FD |
144 | |
145 | free(location_tracepoint->probe_name); | |
146 | free(location_tracepoint->provider_name); | |
147 | free(location_tracepoint->binary_path); | |
2cde0510 | 148 | fd_handle_put(location_tracepoint->binary_fd_handle); |
f4d0bb2e FD |
149 | free(location); |
150 | } | |
151 | ||
1ce46cfe JG |
152 | void lttng_userspace_probe_location_destroy( |
153 | struct lttng_userspace_probe_location *location) | |
154 | { | |
155 | if (!location) { | |
156 | return; | |
157 | } | |
158 | ||
159 | lttng_userspace_probe_location_lookup_method_destroy( | |
160 | location->lookup_method); | |
161 | ||
162 | switch (location->type) { | |
163 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
164 | lttng_userspace_probe_location_function_destroy(location); | |
165 | break; | |
f4d0bb2e FD |
166 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
167 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
168 | break; | |
1ce46cfe | 169 | default: |
adf53c67 | 170 | abort(); |
1ce46cfe JG |
171 | } |
172 | } | |
173 | ||
dfcfa983 JR |
174 | /* Compare two file descriptors based on their inode and device numbers. */ |
175 | static bool fd_is_equal(int a, int b) | |
176 | { | |
177 | int ret; | |
178 | bool is_equal = false; | |
179 | struct stat a_stat, b_stat; | |
180 | ||
181 | if (a < 0 && b >= 0) { | |
182 | goto end; | |
183 | } | |
184 | ||
185 | if (b < 0 && a >= 0) { | |
186 | goto end; | |
187 | } | |
188 | ||
189 | if (a < 0 && b < 0) { | |
190 | if (a == -1 && b == -1) { | |
191 | is_equal = true; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | /* Invalid state, abort. */ | |
196 | abort(); | |
197 | } | |
198 | ||
199 | /* Both are valid file descriptors. */ | |
200 | ret = fstat(a, &a_stat); | |
201 | if (ret) { | |
202 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
203 | a); | |
204 | goto end; | |
205 | } | |
206 | ||
207 | ret = fstat(b, &b_stat); | |
208 | if (ret) { | |
209 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
210 | b); | |
211 | goto end; | |
212 | } | |
213 | ||
214 | is_equal = (a_stat.st_ino == b_stat.st_ino) && | |
215 | (a_stat.st_dev == b_stat.st_dev); | |
216 | ||
217 | end: | |
218 | return is_equal; | |
219 | } | |
220 | ||
959e3c66 JR |
221 | static unsigned long lttng_userspace_probe_location_function_hash( |
222 | const struct lttng_userspace_probe_location *location) | |
223 | { | |
224 | unsigned long hash = hash_key_ulong( | |
225 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION, | |
226 | lttng_ht_seed); | |
227 | struct lttng_userspace_probe_location_function *function_location = | |
228 | container_of(location, typeof(*function_location), | |
229 | parent); | |
230 | ||
231 | hash ^= hash_key_str(function_location->function_name, lttng_ht_seed); | |
232 | hash ^= hash_key_str(function_location->binary_path, lttng_ht_seed); | |
233 | /* | |
234 | * No need to hash on the fd. Worst comes to worse, | |
235 | * the equal function will discriminate. | |
236 | */ | |
237 | return hash; | |
238 | } | |
239 | ||
dfcfa983 JR |
240 | static bool lttng_userspace_probe_location_function_is_equal( |
241 | const struct lttng_userspace_probe_location *_a, | |
242 | const struct lttng_userspace_probe_location *_b) | |
243 | { | |
244 | bool is_equal = false; | |
245 | struct lttng_userspace_probe_location_function *a, *b; | |
246 | ||
247 | a = container_of(_a, struct lttng_userspace_probe_location_function, | |
248 | parent); | |
249 | b = container_of(_b, struct lttng_userspace_probe_location_function, | |
250 | parent); | |
251 | ||
252 | if (a->instrumentation_type != b->instrumentation_type) { | |
253 | goto end; | |
254 | } | |
255 | ||
a0377dfe FD |
256 | LTTNG_ASSERT(a->function_name); |
257 | LTTNG_ASSERT(b->function_name); | |
dfcfa983 JR |
258 | if (strcmp(a->function_name, b->function_name)) { |
259 | goto end; | |
260 | } | |
261 | ||
a0377dfe FD |
262 | LTTNG_ASSERT(a->binary_path); |
263 | LTTNG_ASSERT(b->binary_path); | |
dfcfa983 JR |
264 | if (strcmp(a->binary_path, b->binary_path)) { |
265 | goto end; | |
266 | } | |
267 | ||
2cde0510 JG |
268 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
269 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
270 | end: |
271 | return is_equal; | |
272 | } | |
273 | ||
1ce46cfe JG |
274 | static struct lttng_userspace_probe_location * |
275 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
276 | const char *function_name, | |
277 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
278 | bool open_binary) | |
279 | { | |
280 | int binary_fd = -1; | |
fe489250 | 281 | struct fd_handle *binary_fd_handle = NULL; |
1ce46cfe JG |
282 | char *function_name_copy = NULL, *binary_path_copy = NULL; |
283 | struct lttng_userspace_probe_location *ret = NULL; | |
284 | struct lttng_userspace_probe_location_function *location; | |
285 | ||
286 | if (open_binary) { | |
287 | binary_fd = open(binary_path, O_RDONLY); | |
288 | if (binary_fd < 0) { | |
289 | PERROR("Error opening the binary"); | |
290 | goto error; | |
291 | } | |
fe489250 JG |
292 | |
293 | binary_fd_handle = fd_handle_create(binary_fd); | |
294 | if (!binary_fd) { | |
295 | goto error; | |
296 | } | |
297 | ||
298 | /* Ownership transferred to fd_handle. */ | |
1ce46cfe JG |
299 | binary_fd = -1; |
300 | } | |
301 | ||
302 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
303 | if (!function_name_copy) { | |
304 | PERROR("Error duplicating the function name"); | |
305 | goto error; | |
306 | } | |
307 | ||
308 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
309 | if (!binary_path_copy) { | |
310 | PERROR("Error duplicating the function name"); | |
311 | goto error; | |
312 | } | |
313 | ||
a6bc4ca9 | 314 | location = (lttng_userspace_probe_location_function *) zmalloc(sizeof(*location)); |
1ce46cfe JG |
315 | if (!location) { |
316 | PERROR("Error allocating userspace probe location"); | |
317 | goto error; | |
318 | } | |
319 | ||
320 | location->function_name = function_name_copy; | |
321 | location->binary_path = binary_path_copy; | |
2cde0510 | 322 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 323 | binary_fd_handle = NULL; |
9d3981b5 JG |
324 | location->instrumentation_type = |
325 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
326 | |
327 | ret = &location->parent; | |
328 | ret->lookup_method = lookup_method; | |
329 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
dfcfa983 | 330 | ret->equal = lttng_userspace_probe_location_function_is_equal; |
959e3c66 | 331 | ret->hash = lttng_userspace_probe_location_function_hash; |
1ce46cfe JG |
332 | goto end; |
333 | ||
334 | error: | |
335 | free(function_name_copy); | |
336 | free(binary_path_copy); | |
337 | if (binary_fd >= 0) { | |
338 | if (close(binary_fd)) { | |
339 | PERROR("Error closing binary fd in error path"); | |
340 | } | |
341 | } | |
fe489250 | 342 | fd_handle_put(binary_fd_handle); |
1ce46cfe JG |
343 | end: |
344 | return ret; | |
345 | } | |
346 | ||
959e3c66 JR |
347 | static unsigned long lttng_userspace_probe_location_tracepoint_hash( |
348 | const struct lttng_userspace_probe_location *location) | |
349 | { | |
350 | unsigned long hash = hash_key_ulong( | |
351 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT, | |
352 | lttng_ht_seed); | |
353 | struct lttng_userspace_probe_location_tracepoint *tp_location = | |
354 | container_of(location, typeof(*tp_location), parent); | |
355 | ||
356 | hash ^= hash_key_str(tp_location->probe_name, lttng_ht_seed); | |
357 | hash ^= hash_key_str(tp_location->provider_name, lttng_ht_seed); | |
358 | hash ^= hash_key_str(tp_location->binary_path, lttng_ht_seed); | |
359 | /* | |
360 | * No need to hash on the fd. Worst comes to worse, | |
361 | * the equal function will discriminate. | |
362 | */ | |
363 | return hash; | |
364 | } | |
365 | ||
dfcfa983 JR |
366 | static bool lttng_userspace_probe_location_tracepoint_is_equal( |
367 | const struct lttng_userspace_probe_location *_a, | |
368 | const struct lttng_userspace_probe_location *_b) | |
369 | { | |
370 | bool is_equal = false; | |
371 | struct lttng_userspace_probe_location_tracepoint *a, *b; | |
372 | ||
373 | a = container_of(_a, struct lttng_userspace_probe_location_tracepoint, | |
374 | parent); | |
375 | b = container_of(_b, struct lttng_userspace_probe_location_tracepoint, | |
376 | parent); | |
377 | ||
a0377dfe FD |
378 | LTTNG_ASSERT(a->probe_name); |
379 | LTTNG_ASSERT(b->probe_name); | |
dfcfa983 JR |
380 | if (strcmp(a->probe_name, b->probe_name)) { |
381 | goto end; | |
382 | } | |
383 | ||
a0377dfe FD |
384 | LTTNG_ASSERT(a->provider_name); |
385 | LTTNG_ASSERT(b->provider_name); | |
dfcfa983 JR |
386 | if (strcmp(a->provider_name, b->provider_name)) { |
387 | goto end; | |
388 | } | |
389 | ||
a0377dfe FD |
390 | LTTNG_ASSERT(a->binary_path); |
391 | LTTNG_ASSERT(b->binary_path); | |
dfcfa983 JR |
392 | if (strcmp(a->binary_path, b->binary_path)) { |
393 | goto end; | |
394 | } | |
395 | ||
2cde0510 JG |
396 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
397 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
398 | |
399 | end: | |
400 | return is_equal; | |
401 | } | |
402 | ||
f4d0bb2e FD |
403 | static struct lttng_userspace_probe_location * |
404 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
405 | const char *provider_name, const char *probe_name, | |
406 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
407 | bool open_binary) | |
408 | { | |
409 | int binary_fd = -1; | |
fe489250 | 410 | struct fd_handle *binary_fd_handle = NULL; |
f4d0bb2e FD |
411 | char *probe_name_copy = NULL; |
412 | char *provider_name_copy = NULL; | |
413 | char *binary_path_copy = NULL; | |
414 | struct lttng_userspace_probe_location *ret = NULL; | |
415 | struct lttng_userspace_probe_location_tracepoint *location; | |
416 | ||
417 | if (open_binary) { | |
418 | binary_fd = open(binary_path, O_RDONLY); | |
419 | if (binary_fd < 0) { | |
420 | PERROR("open"); | |
421 | goto error; | |
422 | } | |
fe489250 JG |
423 | |
424 | binary_fd_handle = fd_handle_create(binary_fd); | |
425 | if (!binary_fd) { | |
426 | goto error; | |
427 | } | |
428 | ||
429 | /* Ownership transferred to fd_handle. */ | |
f4d0bb2e FD |
430 | binary_fd = -1; |
431 | } | |
432 | ||
433 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
434 | if (!probe_name_copy) { | |
435 | PERROR("lttng_strndup"); | |
436 | goto error; | |
437 | } | |
438 | ||
439 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
440 | if (!provider_name_copy) { | |
441 | PERROR("lttng_strndup"); | |
442 | goto error; | |
443 | } | |
444 | ||
445 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
446 | if (!binary_path_copy) { | |
447 | PERROR("lttng_strndup"); | |
448 | goto error; | |
449 | } | |
450 | ||
a6bc4ca9 | 451 | location = (lttng_userspace_probe_location_tracepoint *) zmalloc(sizeof(*location)); |
f4d0bb2e FD |
452 | if (!location) { |
453 | PERROR("zmalloc"); | |
454 | goto error; | |
455 | } | |
456 | ||
457 | location->probe_name = probe_name_copy; | |
458 | location->provider_name = provider_name_copy; | |
459 | location->binary_path = binary_path_copy; | |
2cde0510 | 460 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 461 | binary_fd_handle = NULL; |
f4d0bb2e FD |
462 | |
463 | ret = &location->parent; | |
464 | ret->lookup_method = lookup_method; | |
465 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
dfcfa983 | 466 | ret->equal = lttng_userspace_probe_location_tracepoint_is_equal; |
959e3c66 | 467 | ret->hash = lttng_userspace_probe_location_tracepoint_hash; |
f4d0bb2e FD |
468 | goto end; |
469 | ||
470 | error: | |
471 | free(probe_name_copy); | |
472 | free(provider_name_copy); | |
7c86453b | 473 | free(binary_path_copy); |
f4d0bb2e FD |
474 | if (binary_fd >= 0) { |
475 | if (close(binary_fd)) { | |
476 | PERROR("Error closing binary fd in error path"); | |
477 | } | |
478 | } | |
fe489250 | 479 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
480 | end: |
481 | return ret; | |
482 | } | |
483 | ||
1ce46cfe JG |
484 | struct lttng_userspace_probe_location * |
485 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
486 | const char *function_name, | |
487 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
488 | { | |
489 | struct lttng_userspace_probe_location *ret = NULL; | |
490 | ||
491 | if (!binary_path || !function_name) { | |
f04a8200 | 492 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
493 | goto end; |
494 | } | |
495 | ||
496 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
497 | lookup_method)) { | |
498 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
499 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
500 | break; | |
501 | default: | |
502 | /* Invalid probe location lookup method. */ | |
503 | goto end; | |
504 | } | |
505 | ||
506 | ret = lttng_userspace_probe_location_function_create_no_check( | |
507 | binary_path, function_name, lookup_method, true); | |
508 | end: | |
509 | return ret; | |
510 | } | |
511 | ||
f4d0bb2e FD |
512 | struct lttng_userspace_probe_location * |
513 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
514 | const char *provider_name, const char *probe_name, | |
515 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
516 | { | |
517 | struct lttng_userspace_probe_location *ret = NULL; | |
518 | ||
519 | if (!binary_path || !probe_name || !provider_name) { | |
f04a8200 | 520 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
521 | goto end; |
522 | } | |
523 | ||
524 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
525 | lookup_method)) { | |
526 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
527 | break; | |
528 | default: | |
529 | /* Invalid probe location lookup method. */ | |
530 | goto end; | |
531 | } | |
532 | ||
533 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
534 | binary_path, provider_name, probe_name, lookup_method, true); | |
535 | end: | |
536 | return ret; | |
537 | } | |
538 | ||
394357fe FD |
539 | static struct lttng_userspace_probe_location_lookup_method * |
540 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
541 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
542 | { | |
543 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
544 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
545 | ||
a0377dfe FD |
546 | LTTNG_ASSERT(lookup_method); |
547 | LTTNG_ASSERT(lookup_method->type == | |
394357fe FD |
548 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); |
549 | ||
a6bc4ca9 | 550 | elf_method = (lttng_userspace_probe_location_lookup_method_elf *) zmalloc(sizeof(*elf_method)); |
394357fe FD |
551 | if (!elf_method) { |
552 | PERROR("Error allocating ELF userspace probe lookup method"); | |
553 | goto error; | |
554 | } | |
555 | ||
556 | elf_method->parent.type = lookup_method->type; | |
557 | parent = &elf_method->parent; | |
558 | ||
559 | goto end; | |
560 | error: | |
561 | parent = NULL; | |
562 | end: | |
563 | return parent; | |
564 | } | |
565 | ||
f4d0bb2e FD |
566 | static struct lttng_userspace_probe_location_lookup_method * |
567 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
568 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
569 | { | |
570 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
571 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
572 | ||
a0377dfe FD |
573 | LTTNG_ASSERT(lookup_method); |
574 | LTTNG_ASSERT(lookup_method->type == | |
f4d0bb2e FD |
575 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); |
576 | ||
a6bc4ca9 | 577 | sdt_method = (lttng_userspace_probe_location_lookup_method_sdt *) zmalloc(sizeof(*sdt_method)); |
f4d0bb2e FD |
578 | if (!sdt_method) { |
579 | PERROR("zmalloc"); | |
580 | goto error; | |
581 | } | |
582 | ||
583 | sdt_method->parent.type = lookup_method->type; | |
584 | parent = &sdt_method->parent; | |
585 | ||
586 | goto end; | |
587 | ||
588 | error: | |
589 | parent = NULL; | |
590 | end: | |
591 | return parent; | |
592 | } | |
593 | ||
394357fe FD |
594 | static struct lttng_userspace_probe_location * |
595 | lttng_userspace_probe_location_function_copy( | |
596 | const struct lttng_userspace_probe_location *location) | |
597 | { | |
598 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
599 | struct lttng_userspace_probe_location *new_location = NULL; | |
600 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
601 | const char *binary_path = NULL; |
602 | const char *function_name = NULL; | |
fe489250 | 603 | struct lttng_userspace_probe_location_function *function_location; |
394357fe | 604 | |
a0377dfe FD |
605 | LTTNG_ASSERT(location); |
606 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
fe489250 JG |
607 | function_location = container_of( |
608 | location, typeof(*function_location), parent); | |
394357fe | 609 | |
cc831309 FD |
610 | /* Get probe location fields */ |
611 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 612 | if (!binary_path) { |
cc831309 | 613 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
614 | goto error; |
615 | } | |
616 | ||
cc831309 | 617 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 618 | if (!function_name) { |
cc831309 | 619 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
620 | goto error; |
621 | } | |
622 | ||
394357fe FD |
623 | /* |
624 | * Duplicate probe location method fields | |
625 | */ | |
626 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
627 | location->lookup_method); | |
628 | switch (lookup_type) { | |
629 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
630 | lookup_method = | |
631 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
632 | location->lookup_method); | |
633 | if (!lookup_method) { | |
fe489250 | 634 | goto error; |
394357fe FD |
635 | } |
636 | break; | |
637 | default: | |
638 | /* Invalid probe location lookup method. */ | |
fe489250 | 639 | goto error; |
394357fe FD |
640 | } |
641 | ||
642 | /* Create the probe_location */ | |
643 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 644 | binary_path, function_name, lookup_method, false); |
394357fe FD |
645 | if (!new_location) { |
646 | goto destroy_lookup_method; | |
647 | } | |
648 | ||
649 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
650 | if (lttng_userspace_probe_location_function_set_binary_fd_handle(new_location, |
651 | function_location->binary_fd_handle) < 0) { | |
394357fe FD |
652 | goto destroy_probe_location; |
653 | } | |
654 | ||
655 | goto end; | |
656 | ||
657 | destroy_probe_location: | |
658 | lttng_userspace_probe_location_destroy(new_location); | |
659 | destroy_lookup_method: | |
660 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
394357fe | 661 | error: |
394357fe FD |
662 | new_location = NULL; |
663 | end: | |
664 | return new_location; | |
665 | } | |
666 | ||
f4d0bb2e FD |
667 | static struct lttng_userspace_probe_location * |
668 | lttng_userspace_probe_location_tracepoint_copy( | |
669 | const struct lttng_userspace_probe_location *location) | |
670 | { | |
671 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
672 | struct lttng_userspace_probe_location *new_location = NULL; | |
673 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
674 | const char *binary_path = NULL; |
675 | const char *probe_name = NULL; | |
676 | const char *provider_name = NULL; | |
fe489250 | 677 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; |
f4d0bb2e | 678 | |
a0377dfe FD |
679 | LTTNG_ASSERT(location); |
680 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
fe489250 JG |
681 | tracepoint_location = container_of( |
682 | location, typeof(*tracepoint_location), parent); | |
f4d0bb2e | 683 | |
fe489250 | 684 | /* Get probe location fields */ |
cc831309 | 685 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); |
f4d0bb2e | 686 | if (!binary_path) { |
cc831309 | 687 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
688 | goto error; |
689 | } | |
690 | ||
cc831309 | 691 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 692 | if (!probe_name) { |
cc831309 | 693 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
694 | goto error; |
695 | } | |
696 | ||
cc831309 | 697 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 698 | if (!provider_name) { |
cc831309 | 699 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
700 | goto error; |
701 | } | |
702 | ||
f4d0bb2e FD |
703 | /* |
704 | * Duplicate probe location method fields | |
705 | */ | |
706 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
707 | location->lookup_method); | |
708 | switch (lookup_type) { | |
709 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
710 | lookup_method = | |
711 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
712 | location->lookup_method); | |
713 | if (!lookup_method) { | |
fe489250 | 714 | goto error; |
f4d0bb2e FD |
715 | } |
716 | break; | |
717 | default: | |
718 | /* Invalid probe location lookup method. */ | |
fe489250 | 719 | goto error; |
f4d0bb2e FD |
720 | } |
721 | ||
722 | /* Create the probe_location */ | |
723 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 724 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
725 | if (!new_location) { |
726 | goto destroy_lookup_method; | |
727 | } | |
728 | ||
729 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
730 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd_handle(new_location, |
731 | tracepoint_location->binary_fd_handle) < 0) { | |
f4d0bb2e FD |
732 | goto destroy_probe_location; |
733 | } | |
734 | ||
735 | goto end; | |
736 | ||
737 | destroy_probe_location: | |
738 | lttng_userspace_probe_location_destroy(new_location); | |
739 | destroy_lookup_method: | |
740 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
f4d0bb2e | 741 | error: |
f4d0bb2e FD |
742 | new_location = NULL; |
743 | end: | |
744 | return new_location; | |
745 | } | |
746 | ||
1ce46cfe JG |
747 | const char *lttng_userspace_probe_location_function_get_binary_path( |
748 | const struct lttng_userspace_probe_location *location) | |
749 | { | |
750 | const char *ret = NULL; | |
751 | struct lttng_userspace_probe_location_function *function_location; | |
752 | ||
753 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
754 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 755 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
756 | goto end; |
757 | } | |
758 | ||
759 | function_location = container_of(location, | |
760 | struct lttng_userspace_probe_location_function, | |
761 | parent); | |
762 | ret = function_location->binary_path; | |
763 | end: | |
764 | return ret; | |
765 | } | |
766 | ||
f4d0bb2e FD |
767 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
768 | const struct lttng_userspace_probe_location *location) | |
769 | { | |
770 | const char *ret = NULL; | |
771 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
772 | ||
773 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
774 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 775 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
776 | goto end; |
777 | } | |
778 | ||
779 | tracepoint_location = container_of(location, | |
780 | struct lttng_userspace_probe_location_tracepoint, | |
781 | parent); | |
782 | ret = tracepoint_location->binary_path; | |
783 | end: | |
784 | return ret; | |
785 | } | |
786 | ||
1ce46cfe JG |
787 | const char *lttng_userspace_probe_location_function_get_function_name( |
788 | const struct lttng_userspace_probe_location *location) | |
789 | { | |
790 | const char *ret = NULL; | |
791 | struct lttng_userspace_probe_location_function *function_location; | |
792 | ||
793 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
794 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 795 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
796 | goto end; |
797 | } | |
798 | ||
799 | function_location = container_of(location, | |
800 | struct lttng_userspace_probe_location_function, parent); | |
801 | ret = function_location->function_name; | |
802 | end: | |
803 | return ret; | |
804 | } | |
805 | ||
f4d0bb2e FD |
806 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
807 | const struct lttng_userspace_probe_location *location) | |
808 | { | |
809 | const char *ret = NULL; | |
810 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
811 | ||
812 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
813 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 814 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
815 | goto end; |
816 | } | |
817 | ||
818 | tracepoint_location = container_of(location, | |
819 | struct lttng_userspace_probe_location_tracepoint, parent); | |
820 | ret = tracepoint_location->probe_name; | |
821 | end: | |
822 | return ret; | |
823 | } | |
824 | ||
825 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
826 | const struct lttng_userspace_probe_location *location) | |
827 | { | |
828 | const char *ret = NULL; | |
829 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
830 | ||
831 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
832 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 833 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
834 | goto end; |
835 | } | |
836 | ||
837 | tracepoint_location = container_of(location, | |
838 | struct lttng_userspace_probe_location_tracepoint, parent); | |
839 | ret = tracepoint_location->provider_name; | |
840 | end: | |
841 | return ret; | |
842 | } | |
843 | ||
1ce46cfe JG |
844 | int lttng_userspace_probe_location_function_get_binary_fd( |
845 | const struct lttng_userspace_probe_location *location) | |
846 | { | |
847 | int ret = -1; | |
848 | struct lttng_userspace_probe_location_function *function_location; | |
849 | ||
850 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
851 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 852 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
853 | goto end; |
854 | } | |
855 | ||
856 | function_location = container_of(location, | |
857 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 JG |
858 | ret = function_location->binary_fd_handle ? |
859 | fd_handle_get_fd(function_location->binary_fd_handle) : -1; | |
1ce46cfe JG |
860 | end: |
861 | return ret; | |
862 | } | |
863 | ||
9d3981b5 JG |
864 | enum lttng_userspace_probe_location_function_instrumentation_type |
865 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
866 | const struct lttng_userspace_probe_location *location) | |
867 | { | |
868 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
869 | struct lttng_userspace_probe_location_function *function_location; | |
870 | ||
871 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
872 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 873 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
874 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; |
875 | goto end; | |
876 | } | |
877 | ||
878 | function_location = container_of(location, | |
879 | struct lttng_userspace_probe_location_function, parent); | |
880 | type = function_location->instrumentation_type; | |
881 | end: | |
882 | return type; | |
883 | } | |
884 | ||
885 | enum lttng_userspace_probe_location_status | |
886 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
887 | const struct lttng_userspace_probe_location *location, | |
888 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
889 | { | |
890 | enum lttng_userspace_probe_location_status status = | |
891 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
892 | struct lttng_userspace_probe_location_function *function_location; | |
893 | ||
894 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
895 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
896 | instrumentation_type != | |
897 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
f04a8200 | 898 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
899 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; |
900 | goto end; | |
901 | } | |
902 | ||
903 | function_location = container_of(location, | |
904 | struct lttng_userspace_probe_location_function, parent); | |
905 | function_location->instrumentation_type = instrumentation_type; | |
906 | end: | |
907 | return status; | |
908 | } | |
909 | ||
f4d0bb2e FD |
910 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
911 | const struct lttng_userspace_probe_location *location) | |
912 | { | |
913 | int ret = -1; | |
914 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
915 | ||
916 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
917 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 918 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
919 | goto end; |
920 | } | |
921 | ||
922 | tracepoint_location = container_of(location, | |
923 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 JG |
924 | ret = tracepoint_location->binary_fd_handle ? |
925 | fd_handle_get_fd(tracepoint_location->binary_fd_handle) : -1; | |
f4d0bb2e FD |
926 | end: |
927 | return ret; | |
928 | } | |
929 | ||
1ce46cfe JG |
930 | static struct lttng_userspace_probe_location_lookup_method * |
931 | lttng_userspace_probe_location_function_get_lookup_method( | |
932 | const struct lttng_userspace_probe_location *location) | |
933 | { | |
934 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
935 | ||
936 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
937 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 938 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
939 | goto end; |
940 | } | |
941 | ||
942 | ret = location->lookup_method; | |
943 | end: | |
944 | return ret; | |
945 | } | |
946 | ||
f4d0bb2e FD |
947 | static struct lttng_userspace_probe_location_lookup_method * |
948 | lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
949 | const struct lttng_userspace_probe_location *location) | |
950 | { | |
951 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
952 | ||
953 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
954 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 955 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
956 | goto end; |
957 | } | |
958 | ||
959 | ret = location->lookup_method; | |
960 | end: | |
961 | return ret; | |
962 | } | |
963 | ||
87597c2c | 964 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
965 | lttng_userspace_probe_location_get_lookup_method( |
966 | const struct lttng_userspace_probe_location *location) | |
967 | { | |
968 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
969 | ||
a0377dfe | 970 | LTTNG_ASSERT(location); |
1ce46cfe JG |
971 | switch (location->type) { |
972 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
973 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
974 | location); | |
975 | break; | |
f4d0bb2e FD |
976 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
977 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
978 | location); | |
979 | break; | |
1ce46cfe JG |
980 | default: |
981 | ERR("Unknowned lookup method."); | |
982 | break; | |
983 | } | |
984 | return ret; | |
985 | } | |
986 | ||
987 | static | |
988 | int lttng_userspace_probe_location_lookup_method_serialize( | |
989 | struct lttng_userspace_probe_location_lookup_method *method, | |
e368fb43 | 990 | struct lttng_payload *payload) |
1ce46cfe JG |
991 | { |
992 | int ret; | |
993 | struct lttng_userspace_probe_location_lookup_method_comm | |
994 | lookup_method_comm; | |
995 | ||
996 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
997 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
e368fb43 JG |
998 | if (payload) { |
999 | ret = lttng_dynamic_buffer_append(&payload->buffer, &lookup_method_comm, | |
1ce46cfe JG |
1000 | sizeof(lookup_method_comm)); |
1001 | if (ret) { | |
1002 | goto end; | |
1003 | } | |
1004 | } | |
f4d0bb2e FD |
1005 | ret = sizeof(lookup_method_comm); |
1006 | end: | |
1007 | return ret; | |
1008 | } | |
1009 | ||
1010 | static | |
1011 | int lttng_userspace_probe_location_function_serialize( | |
1012 | const struct lttng_userspace_probe_location *location, | |
e368fb43 | 1013 | struct lttng_payload *payload) |
f4d0bb2e FD |
1014 | { |
1015 | int ret; | |
1016 | size_t function_name_len, binary_path_len; | |
1017 | struct lttng_userspace_probe_location_function *location_function; | |
1018 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
1019 | ||
a0377dfe FD |
1020 | LTTNG_ASSERT(location); |
1021 | LTTNG_ASSERT(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e FD |
1022 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); |
1023 | ||
1024 | location_function = container_of(location, | |
1025 | struct lttng_userspace_probe_location_function, | |
1026 | parent); | |
1027 | if (!location_function->function_name || !location_function->binary_path) { | |
1028 | ret = -LTTNG_ERR_INVALID; | |
1029 | goto end; | |
1030 | } | |
1031 | ||
2cde0510 | 1032 | if (payload && !location_function->binary_fd_handle) { |
f4d0bb2e FD |
1033 | ret = -LTTNG_ERR_INVALID; |
1034 | goto end; | |
1035 | } | |
1036 | ||
f4d0bb2e FD |
1037 | function_name_len = strlen(location_function->function_name); |
1038 | if (function_name_len == 0) { | |
1039 | ret = -LTTNG_ERR_INVALID; | |
1040 | goto end; | |
1041 | } | |
1042 | binary_path_len = strlen(location_function->binary_path); | |
1043 | if (binary_path_len == 0) { | |
1044 | ret = -LTTNG_ERR_INVALID; | |
1045 | goto end; | |
1046 | } | |
1047 | ||
1048 | location_function_comm.function_name_len = function_name_len + 1; | |
1049 | location_function_comm.binary_path_len = binary_path_len + 1; | |
1050 | ||
e368fb43 JG |
1051 | if (payload) { |
1052 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1053 | &location_function_comm, |
1054 | sizeof(location_function_comm)); | |
1055 | if (ret) { | |
1056 | ret = -LTTNG_ERR_INVALID; | |
1057 | goto end; | |
1058 | } | |
e368fb43 | 1059 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1060 | location_function->function_name, |
1061 | location_function_comm.function_name_len); | |
1062 | if (ret) { | |
1063 | ret = -LTTNG_ERR_INVALID; | |
1064 | goto end; | |
1065 | } | |
e368fb43 | 1066 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1067 | location_function->binary_path, |
1068 | location_function_comm.binary_path_len); | |
1069 | if (ret) { | |
1070 | ret = -LTTNG_ERR_INVALID; | |
1071 | goto end; | |
1072 | } | |
fe489250 | 1073 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1074 | payload, location_function->binary_fd_handle); |
e368fb43 JG |
1075 | if (ret) { |
1076 | ret = -LTTNG_ERR_INVALID; | |
1077 | goto end; | |
1078 | } | |
f4d0bb2e FD |
1079 | } |
1080 | ret = sizeof(location_function_comm) + | |
1081 | location_function_comm.function_name_len + | |
1082 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
1083 | end: |
1084 | return ret; | |
1085 | } | |
1086 | ||
1087 | static | |
f4d0bb2e | 1088 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe | 1089 | const struct lttng_userspace_probe_location *location, |
e368fb43 | 1090 | struct lttng_payload *payload) |
1ce46cfe JG |
1091 | { |
1092 | int ret; | |
f4d0bb2e FD |
1093 | size_t probe_name_len, provider_name_len, binary_path_len; |
1094 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
1095 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe | 1096 | |
a0377dfe FD |
1097 | LTTNG_ASSERT(location); |
1098 | LTTNG_ASSERT(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 1099 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 1100 | |
f4d0bb2e FD |
1101 | location_tracepoint = container_of(location, |
1102 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 1103 | parent); |
f4d0bb2e FD |
1104 | if (!location_tracepoint->probe_name || |
1105 | !location_tracepoint->provider_name || | |
1106 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
1107 | ret = -LTTNG_ERR_INVALID; |
1108 | goto end; | |
1109 | } | |
1110 | ||
2cde0510 | 1111 | if (payload && !location_tracepoint->binary_fd_handle) { |
1ce46cfe JG |
1112 | ret = -LTTNG_ERR_INVALID; |
1113 | goto end; | |
1114 | } | |
1115 | ||
f4d0bb2e FD |
1116 | probe_name_len = strlen(location_tracepoint->probe_name); |
1117 | if (probe_name_len == 0) { | |
1ce46cfe JG |
1118 | ret = -LTTNG_ERR_INVALID; |
1119 | goto end; | |
1120 | } | |
f4d0bb2e FD |
1121 | |
1122 | provider_name_len = strlen(location_tracepoint->provider_name); | |
1123 | if (provider_name_len == 0) { | |
1124 | ret = -LTTNG_ERR_INVALID; | |
1125 | goto end; | |
1126 | } | |
1127 | ||
1128 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
1129 | if (binary_path_len == 0) { |
1130 | ret = -LTTNG_ERR_INVALID; | |
1131 | goto end; | |
1132 | } | |
1133 | ||
f4d0bb2e FD |
1134 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
1135 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
1136 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe | 1137 | |
e368fb43 JG |
1138 | if (payload) { |
1139 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1140 | &location_tracepoint_comm, |
1141 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
1142 | if (ret) { |
1143 | ret = -LTTNG_ERR_INVALID; | |
1144 | goto end; | |
1145 | } | |
e368fb43 | 1146 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1147 | location_tracepoint->probe_name, |
1148 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
1149 | if (ret) { |
1150 | ret = -LTTNG_ERR_INVALID; | |
1151 | goto end; | |
1152 | } | |
e368fb43 | 1153 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1154 | location_tracepoint->provider_name, |
1155 | location_tracepoint_comm.provider_name_len); | |
1156 | if (ret) { | |
1157 | ret = -LTTNG_ERR_INVALID; | |
1158 | goto end; | |
1159 | } | |
e368fb43 | 1160 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1161 | location_tracepoint->binary_path, |
1162 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
1163 | if (ret) { |
1164 | ret = -LTTNG_ERR_INVALID; | |
1165 | goto end; | |
1166 | } | |
fe489250 | 1167 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1168 | payload, location_tracepoint->binary_fd_handle); |
e368fb43 JG |
1169 | if (ret) { |
1170 | ret = -LTTNG_ERR_INVALID; | |
1171 | goto end; | |
1172 | } | |
1ce46cfe | 1173 | } |
e368fb43 | 1174 | |
f4d0bb2e FD |
1175 | ret = sizeof(location_tracepoint_comm) + |
1176 | location_tracepoint_comm.probe_name_len + | |
1177 | location_tracepoint_comm.provider_name_len + | |
1178 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1179 | end: |
1180 | return ret; | |
1181 | } | |
1182 | ||
1ce46cfe JG |
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) { | |
c21e883d JG |
1384 | PERROR("Failed to allocate probe name"); |
1385 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1386 | goto end; |
1387 | } | |
1388 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1389 | if (!provider_name) { | |
c21e883d JG |
1390 | PERROR("Failed to allocate provider name"); |
1391 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1392 | goto end; |
1393 | } | |
1394 | ||
b45a2969 | 1395 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); |
f4d0bb2e | 1396 | if (!binary_path) { |
c21e883d JG |
1397 | PERROR("Failed to allocate binary path"); |
1398 | ret = -LTTNG_ERR_INVALID; | |
f4d0bb2e FD |
1399 | goto end; |
1400 | } | |
1401 | ||
1402 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1403 | binary_path, provider_name, probe_name, NULL, false); | |
1404 | if (!(*location)) { | |
1405 | ret = -LTTNG_ERR_INVALID; | |
1406 | goto end; | |
1407 | } | |
1408 | ||
2cde0510 JG |
1409 | ret = lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
1410 | *location, binary_fd_handle); | |
e368fb43 | 1411 | if (ret) { |
e368fb43 JG |
1412 | ret = -LTTNG_ERR_INVALID; |
1413 | goto end; | |
1414 | } | |
1415 | ||
f4d0bb2e FD |
1416 | ret = (int) expected_size; |
1417 | end: | |
2cde0510 | 1418 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
1419 | free(probe_name); |
1420 | free(provider_name); | |
1421 | free(binary_path); | |
1422 | return ret; | |
1423 | } | |
1424 | ||
1ce46cfe | 1425 | static |
e368fb43 JG |
1426 | int lttng_userspace_probe_location_lookup_method_create_from_payload( |
1427 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1428 | struct lttng_userspace_probe_location_lookup_method **lookup_method) |
1429 | { | |
1430 | int ret; | |
1431 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1432 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1433 | ||
a0377dfe FD |
1434 | LTTNG_ASSERT(view); |
1435 | LTTNG_ASSERT(lookup_method); | |
1ce46cfe | 1436 | |
e368fb43 | 1437 | if (view->buffer.size < sizeof(*lookup_comm)) { |
1ce46cfe JG |
1438 | ret = -LTTNG_ERR_INVALID; |
1439 | goto end; | |
1440 | } | |
1441 | ||
e368fb43 | 1442 | lookup_comm = (typeof(lookup_comm)) view->buffer.data; |
1ce46cfe JG |
1443 | type = (enum lttng_userspace_probe_location_lookup_method_type) |
1444 | lookup_comm->type; | |
1445 | switch (type) { | |
1446 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1447 | *lookup_method = NULL; | |
1448 | break; | |
1449 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1450 | *lookup_method = | |
1451 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1452 | if (!(*lookup_method)) { | |
1453 | ret = -LTTNG_ERR_INVALID; | |
1454 | goto end; | |
1455 | } | |
1456 | break; | |
f4d0bb2e FD |
1457 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1458 | *lookup_method = | |
1459 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1460 | if (!(*lookup_method)) { | |
1461 | ret = -LTTNG_ERR_INVALID; | |
1462 | goto end; | |
1463 | } | |
1464 | break; | |
1ce46cfe JG |
1465 | default: |
1466 | ret = -LTTNG_ERR_INVALID; | |
1467 | goto end; | |
1468 | } | |
1469 | ||
1470 | ret = sizeof(*lookup_comm); | |
1471 | end: | |
1472 | return ret; | |
1473 | } | |
1474 | ||
e368fb43 JG |
1475 | int lttng_userspace_probe_location_create_from_payload( |
1476 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1477 | struct lttng_userspace_probe_location **location) |
1478 | { | |
1479 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1ce46cfe | 1480 | enum lttng_userspace_probe_location_type type; |
1ce46cfe JG |
1481 | int consumed = 0; |
1482 | int ret; | |
3e6e0df2 JG |
1483 | struct lttng_userspace_probe_location_comm *probe_location_comm; |
1484 | struct lttng_payload_view probe_location_comm_view = | |
1485 | lttng_payload_view_from_view( | |
1486 | view, 0, sizeof(*probe_location_comm)); | |
1ce46cfe | 1487 | |
a0377dfe FD |
1488 | LTTNG_ASSERT(view); |
1489 | LTTNG_ASSERT(location); | |
1ce46cfe JG |
1490 | |
1491 | lookup_method = NULL; | |
1492 | ||
3e6e0df2 | 1493 | if (!lttng_payload_view_is_valid(&probe_location_comm_view)) { |
1ce46cfe JG |
1494 | ret = -LTTNG_ERR_INVALID; |
1495 | goto end; | |
1496 | } | |
1497 | ||
3e6e0df2 | 1498 | probe_location_comm = (typeof(probe_location_comm)) probe_location_comm_view.buffer.data; |
1ce46cfe JG |
1499 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; |
1500 | consumed += sizeof(*probe_location_comm); | |
1501 | ||
1502 | switch (type) { | |
1503 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1504 | { | |
e368fb43 JG |
1505 | struct lttng_payload_view location_view = |
1506 | lttng_payload_view_from_view( | |
1507 | view, consumed, -1); | |
1ce46cfe | 1508 | |
e368fb43 JG |
1509 | ret = lttng_userspace_probe_location_function_create_from_payload( |
1510 | &location_view, location); | |
1ce46cfe JG |
1511 | if (ret < 0) { |
1512 | goto end; | |
1513 | } | |
1514 | break; | |
1515 | } | |
f4d0bb2e FD |
1516 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1517 | { | |
e368fb43 JG |
1518 | struct lttng_payload_view location_view = |
1519 | lttng_payload_view_from_view(view, consumed, -1); | |
f4d0bb2e | 1520 | |
e368fb43 JG |
1521 | ret = lttng_userspace_probe_location_tracepoint_create_from_payload( |
1522 | &location_view, location); | |
f4d0bb2e FD |
1523 | if (ret < 0) { |
1524 | goto end; | |
1525 | } | |
1526 | break; | |
1527 | } | |
1ce46cfe JG |
1528 | default: |
1529 | ret = -LTTNG_ERR_INVALID; | |
1530 | goto end; | |
1531 | } | |
1532 | ||
1533 | consumed += ret; | |
e368fb43 | 1534 | if (view->buffer.size <= consumed) { |
1ce46cfe JG |
1535 | ret = -LTTNG_ERR_INVALID; |
1536 | goto end; | |
1537 | } | |
1538 | ||
e368fb43 JG |
1539 | { |
1540 | struct lttng_payload_view lookup_method_view = | |
1541 | lttng_payload_view_from_view( | |
1542 | view, consumed, -1); | |
1543 | ||
1544 | ret = lttng_userspace_probe_location_lookup_method_create_from_payload( | |
1545 | &lookup_method_view, &lookup_method); | |
1546 | } | |
1ce46cfe JG |
1547 | if (ret < 0) { |
1548 | ret = -LTTNG_ERR_INVALID; | |
1549 | goto end; | |
1550 | } | |
1551 | ||
a0377dfe | 1552 | LTTNG_ASSERT(lookup_method); |
1ce46cfe JG |
1553 | (*location)->lookup_method = lookup_method; |
1554 | lookup_method = NULL; | |
1555 | ret += consumed; | |
1556 | end: | |
1557 | return ret; | |
1558 | } | |
1559 | ||
fe489250 | 1560 | static |
2cde0510 | 1561 | int lttng_userspace_probe_location_function_set_binary_fd_handle( |
fe489250 | 1562 | struct lttng_userspace_probe_location *location, |
a6bc4ca9 | 1563 | struct fd_handle *binary_fd) |
1ce46cfe JG |
1564 | { |
1565 | int ret = 0; | |
1566 | struct lttng_userspace_probe_location_function *function_location; | |
1567 | ||
a0377dfe FD |
1568 | LTTNG_ASSERT(location); |
1569 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1ce46cfe JG |
1570 | |
1571 | function_location = container_of(location, | |
1572 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 | 1573 | fd_handle_put(function_location->binary_fd_handle); |
fe489250 | 1574 | fd_handle_get(binary_fd); |
2cde0510 | 1575 | function_location->binary_fd_handle = binary_fd; |
1ce46cfe JG |
1576 | return ret; |
1577 | } | |
1578 | ||
fe489250 | 1579 | static |
2cde0510 | 1580 | int lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
fe489250 JG |
1581 | struct lttng_userspace_probe_location *location, |
1582 | struct fd_handle *binary_fd) | |
f4d0bb2e FD |
1583 | { |
1584 | int ret = 0; | |
1585 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1586 | ||
a0377dfe FD |
1587 | LTTNG_ASSERT(location); |
1588 | LTTNG_ASSERT(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
f4d0bb2e FD |
1589 | |
1590 | tracepoint_location = container_of(location, | |
1591 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 | 1592 | fd_handle_put(tracepoint_location->binary_fd_handle); |
fe489250 | 1593 | fd_handle_get(binary_fd); |
2cde0510 | 1594 | tracepoint_location->binary_fd_handle = binary_fd; |
f4d0bb2e FD |
1595 | return ret; |
1596 | } | |
1597 | ||
1ce46cfe JG |
1598 | static |
1599 | int lttng_userspace_probe_location_function_flatten( | |
1600 | const struct lttng_userspace_probe_location *location, | |
1601 | struct lttng_dynamic_buffer *buffer) | |
1602 | { | |
1603 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1604 | struct lttng_userspace_probe_location_function *probe_function; | |
1605 | struct lttng_userspace_probe_location_function flat_probe; | |
1606 | size_t function_name_len, binary_path_len; | |
1607 | size_t padding_needed = 0; | |
1608 | char *flat_probe_start; | |
1609 | int storage_needed = 0; | |
1610 | int ret; | |
1611 | ||
a0377dfe | 1612 | LTTNG_ASSERT(location); |
1ce46cfe JG |
1613 | |
1614 | if (location->lookup_method && location->lookup_method->type != | |
1615 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1616 | ret = -LTTNG_ERR_INVALID; | |
1617 | goto end; | |
1618 | } | |
1619 | ||
1620 | probe_function = container_of(location, | |
1621 | struct lttng_userspace_probe_location_function, | |
1622 | parent); | |
a0377dfe FD |
1623 | LTTNG_ASSERT(probe_function->function_name); |
1624 | LTTNG_ASSERT(probe_function->binary_path); | |
1ce46cfe JG |
1625 | |
1626 | storage_needed += | |
1627 | sizeof(struct lttng_userspace_probe_location_function); | |
1628 | function_name_len = strlen(probe_function->function_name) + 1; | |
1629 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1630 | storage_needed += function_name_len + binary_path_len; | |
1631 | ||
1632 | /* | |
1633 | * The lookup method is aligned to 64-bit within the buffer. | |
1634 | * This is needed even if there is no lookup method since | |
1635 | * the next structure in the buffer probably needs to be | |
1636 | * aligned too (depending on the arch). | |
1637 | */ | |
1cbd136b | 1638 | padding_needed = lttng_align_ceil(storage_needed, sizeof(uint64_t)) - storage_needed; |
1ce46cfe JG |
1639 | storage_needed += padding_needed; |
1640 | ||
1641 | if (location->lookup_method) { | |
1642 | /* NOTE: elf look-up method is assumed here. */ | |
1643 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1644 | } | |
1645 | ||
1646 | if (!buffer) { | |
1647 | ret = storage_needed; | |
1648 | goto end; | |
1649 | } | |
1650 | ||
1651 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1652 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1653 | buffer->size + storage_needed); | |
1654 | if (ret) { | |
1655 | goto end; | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1660 | ||
1661 | flat_probe_start = buffer->data + buffer->size; | |
1662 | flat_probe.parent.type = location->type; | |
1663 | /* | |
1664 | * The lookup method, if present, is the last element in the flat | |
1665 | * representation of the probe. | |
1666 | */ | |
1667 | if (location->lookup_method) { | |
1668 | flat_probe.parent.lookup_method = | |
1669 | (struct lttng_userspace_probe_location_lookup_method *) | |
1670 | (flat_probe_start + sizeof(flat_probe) + | |
1671 | function_name_len + binary_path_len + padding_needed); | |
1672 | } else { | |
1673 | flat_probe.parent.lookup_method = NULL; | |
1674 | } | |
1675 | ||
1676 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1677 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
2cde0510 | 1678 | flat_probe.binary_fd_handle = NULL; |
1ce46cfe JG |
1679 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, |
1680 | sizeof(flat_probe)); | |
1681 | if (ret) { | |
1682 | goto end; | |
1683 | } | |
1684 | ||
1685 | ret = lttng_dynamic_buffer_append(buffer, | |
1686 | probe_function->function_name, function_name_len); | |
1687 | if (ret) { | |
1688 | goto end; | |
1689 | } | |
1690 | ret = lttng_dynamic_buffer_append(buffer, | |
1691 | probe_function->binary_path, binary_path_len); | |
1692 | if (ret) { | |
1693 | goto end; | |
1694 | } | |
1695 | ||
1696 | /* Insert padding before the lookup method. */ | |
1697 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1698 | buffer->size + padding_needed); | |
1699 | if (ret) { | |
1700 | goto end; | |
1701 | } | |
1702 | ||
1703 | if (!location->lookup_method) { | |
1704 | /* Not an error, the default method is used. */ | |
1705 | ret = storage_needed; | |
1706 | goto end; | |
1707 | } | |
1708 | ||
1709 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1710 | flat_lookup_method.parent.type = | |
1711 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1712 | ret = lttng_dynamic_buffer_append(buffer, | |
1713 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1714 | if (ret) { | |
1715 | goto end; | |
1716 | } | |
1717 | ret = storage_needed; | |
1718 | end: | |
1719 | return ret; | |
1720 | } | |
1721 | ||
f4d0bb2e FD |
1722 | static |
1723 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1724 | const struct lttng_userspace_probe_location *location, | |
1725 | struct lttng_dynamic_buffer *buffer) | |
1726 | { | |
1727 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1728 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1729 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1730 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1731 | size_t padding_needed = 0; | |
1732 | int storage_needed = 0; | |
1733 | char *flat_probe_start; | |
1734 | int ret = 0; | |
1735 | ||
a0377dfe | 1736 | LTTNG_ASSERT(location); |
f4d0bb2e FD |
1737 | |
1738 | /* Only SDT tracepoints are supported at the moment */ | |
1739 | if (location->lookup_method && location->lookup_method->type != | |
1740 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1741 | ret = -LTTNG_ERR_INVALID; | |
1742 | goto end; | |
1743 | } | |
1744 | probe_tracepoint = container_of(location, | |
1745 | struct lttng_userspace_probe_location_tracepoint, | |
1746 | parent); | |
a0377dfe FD |
1747 | LTTNG_ASSERT(probe_tracepoint->probe_name); |
1748 | LTTNG_ASSERT(probe_tracepoint->provider_name); | |
1749 | LTTNG_ASSERT(probe_tracepoint->binary_path); | |
f4d0bb2e FD |
1750 | |
1751 | /* Compute the storage space needed to flatten the probe location */ | |
1752 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1753 | ||
1754 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1755 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1756 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1757 | ||
1758 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1759 | ||
1760 | /* | |
1761 | * The lookup method is aligned to 64-bit within the buffer. | |
1762 | * This is needed even if there is no lookup method since | |
1763 | * the next structure in the buffer probably needs to be | |
1764 | * aligned too (depending on the arch). | |
1765 | */ | |
1cbd136b | 1766 | padding_needed = lttng_align_ceil(storage_needed, sizeof(uint64_t)) - storage_needed; |
f4d0bb2e FD |
1767 | storage_needed += padding_needed; |
1768 | ||
1769 | if (location->lookup_method) { | |
1770 | /* NOTE: elf look-up method is assumed here. */ | |
1771 | storage_needed += | |
1772 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1773 | } | |
1774 | ||
1775 | /* | |
1776 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1777 | */ | |
1778 | if (!buffer) { | |
1779 | ret = storage_needed; | |
1780 | goto end; | |
1781 | } | |
1782 | ||
1783 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1784 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1785 | buffer->size + storage_needed); | |
1786 | if (ret) { | |
1787 | goto end; | |
1788 | } | |
1789 | } | |
1790 | ||
1791 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1792 | ||
1793 | flat_probe_start = buffer->data + buffer->size; | |
1794 | flat_probe.parent.type = location->type; | |
1795 | ||
1796 | /* | |
1797 | * The lookup method, if present, is the last element in the flat | |
1798 | * representation of the probe. | |
1799 | */ | |
1800 | if (location->lookup_method) { | |
1801 | flat_probe.parent.lookup_method = | |
1802 | (struct lttng_userspace_probe_location_lookup_method *) | |
1803 | (flat_probe_start + sizeof(flat_probe) + | |
1804 | probe_name_len + provider_name_len + | |
1805 | binary_path_len + padding_needed); | |
1806 | } else { | |
1807 | flat_probe.parent.lookup_method = NULL; | |
1808 | } | |
1809 | ||
1810 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1811 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1812 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
2cde0510 | 1813 | flat_probe.binary_fd_handle = NULL; |
f4d0bb2e FD |
1814 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); |
1815 | if (ret) { | |
1816 | goto end; | |
1817 | } | |
1818 | ||
1819 | /* Append all the fields to the buffer */ | |
1820 | ret = lttng_dynamic_buffer_append(buffer, | |
1821 | probe_tracepoint->probe_name, probe_name_len); | |
1822 | if (ret) { | |
1823 | goto end; | |
1824 | } | |
1825 | ret = lttng_dynamic_buffer_append(buffer, | |
1826 | probe_tracepoint->provider_name, provider_name_len); | |
1827 | if (ret) { | |
1828 | goto end; | |
1829 | } | |
1830 | ret = lttng_dynamic_buffer_append(buffer, | |
1831 | probe_tracepoint->binary_path, binary_path_len); | |
1832 | if (ret) { | |
1833 | goto end; | |
1834 | } | |
1835 | ||
1836 | /* Insert padding before the lookup method. */ | |
1837 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1838 | if (ret) { | |
1839 | goto end; | |
1840 | } | |
1841 | ||
1842 | if (!location->lookup_method) { | |
1843 | /* Not an error, the default method is used. */ | |
1844 | ret = storage_needed; | |
1845 | goto end; | |
1846 | } | |
1847 | ||
1848 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1849 | ||
1850 | flat_lookup_method.parent.type = | |
1851 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1852 | ret = lttng_dynamic_buffer_append(buffer, | |
1853 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1854 | if (ret) { | |
1855 | goto end; | |
1856 | } | |
1857 | ret = storage_needed; | |
1858 | end: | |
1859 | return ret; | |
1860 | } | |
1861 | ||
1ce46cfe JG |
1862 | int lttng_userspace_probe_location_flatten( |
1863 | const struct lttng_userspace_probe_location *location, | |
1864 | struct lttng_dynamic_buffer *buffer) | |
1865 | { | |
1866 | int ret; | |
1867 | if (!location) { | |
1868 | ret = -LTTNG_ERR_INVALID; | |
1869 | goto end; | |
1870 | } | |
1871 | ||
1872 | /* Only types currently supported. */ | |
1873 | switch (location->type) { | |
1874 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1875 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1876 | break; | |
f4d0bb2e FD |
1877 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1878 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1879 | break; | |
1ce46cfe JG |
1880 | default: |
1881 | ret = -LTTNG_ERR_INVALID; | |
1882 | goto end; | |
1883 | } | |
1884 | ||
1885 | end: | |
1886 | return ret; | |
1887 | } | |
394357fe | 1888 | |
394357fe FD |
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 | 1922 | |
dfcfa983 JR |
1923 | bool lttng_userspace_probe_location_lookup_method_is_equal( |
1924 | const struct lttng_userspace_probe_location_lookup_method *a, | |
1925 | const struct lttng_userspace_probe_location_lookup_method *b) | |
1926 | { | |
1927 | bool is_equal = false; | |
1928 | ||
1929 | if (!a || !b) { | |
1930 | goto end; | |
1931 | } | |
1932 | ||
1933 | if (a == b) { | |
1934 | is_equal = true; | |
1935 | goto end; | |
1936 | } | |
1937 | ||
1938 | if (a->type != b->type) { | |
1939 | goto end; | |
1940 | } | |
1941 | ||
1942 | is_equal = true; | |
1943 | end: | |
1944 | return is_equal; | |
1945 | } | |
1946 | ||
dfcfa983 JR |
1947 | bool lttng_userspace_probe_location_is_equal( |
1948 | const struct lttng_userspace_probe_location *a, | |
1949 | const struct lttng_userspace_probe_location *b) | |
1950 | { | |
1951 | bool is_equal = false; | |
1952 | ||
1953 | if (!a || !b) { | |
1954 | goto end; | |
1955 | } | |
1956 | ||
1957 | if (a == b) { | |
1958 | is_equal = true; | |
1959 | goto end; | |
1960 | } | |
1961 | ||
1962 | if (!lttng_userspace_probe_location_lookup_method_is_equal( | |
1963 | a->lookup_method, b->lookup_method)) { | |
1964 | goto end; | |
1965 | } | |
1966 | ||
1967 | if (a->type != b->type) { | |
1968 | goto end; | |
1969 | } | |
1970 | ||
1971 | is_equal = a->equal ? a->equal(a, b) : true; | |
1972 | end: | |
1973 | return is_equal; | |
1974 | } | |
959e3c66 | 1975 | |
959e3c66 JR |
1976 | unsigned long lttng_userspace_probe_location_hash( |
1977 | const struct lttng_userspace_probe_location *location) | |
1978 | { | |
1979 | return location->hash(location); | |
1980 | } | |
6a751b95 | 1981 | |
6a751b95 JR |
1982 | enum lttng_error_code lttng_userspace_probe_location_mi_serialize( |
1983 | const struct lttng_userspace_probe_location *location, | |
1984 | struct mi_writer *writer) | |
1985 | { | |
1986 | typedef enum lttng_error_code (*mi_fp)( | |
1987 | const struct lttng_userspace_probe_location *, | |
1988 | struct mi_writer *); | |
1989 | ||
1990 | int ret; | |
1991 | enum lttng_error_code ret_code; | |
1992 | mi_fp mi_function = NULL; | |
1993 | ||
a0377dfe FD |
1994 | LTTNG_ASSERT(location); |
1995 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
1996 | |
1997 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1998 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1999 | mi_function = lttng_userspace_probe_location_function_mi_serialize; | |
2000 | break; | |
2001 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: | |
2002 | mi_function = lttng_userspace_probe_location_tracepoint_mi_serialize; | |
2003 | break; | |
2004 | default: | |
2005 | abort(); | |
2006 | break; | |
2007 | } | |
2008 | ||
2009 | /* Open userspace probe location element. */ | |
2010 | ret = mi_lttng_writer_open_element( | |
2011 | writer, mi_lttng_element_userspace_probe_location); | |
2012 | if (ret) { | |
2013 | goto mi_error; | |
2014 | } | |
2015 | ||
2016 | /* Underlying user space probe location. */ | |
2017 | ret_code = mi_function(location, writer); | |
2018 | if (ret_code != LTTNG_OK) { | |
2019 | goto end; | |
2020 | } | |
2021 | ||
2022 | /* Close userspace probe location element. */ | |
2023 | ret = mi_lttng_writer_close_element(writer); | |
2024 | if (ret) { | |
2025 | goto mi_error; | |
2026 | } | |
2027 | ||
2028 | ret_code = LTTNG_OK; | |
2029 | goto end; | |
2030 | ||
2031 | mi_error: | |
2032 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2033 | end: | |
2034 | return ret_code; | |
2035 | } | |
2036 | ||
2037 | enum lttng_error_code lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2038 | const struct lttng_userspace_probe_location_lookup_method | |
2039 | *method, | |
2040 | struct mi_writer *writer) | |
2041 | { | |
2042 | int ret; | |
2043 | enum lttng_error_code ret_code; | |
2044 | const char *type_element_str; | |
2045 | ||
a0377dfe FD |
2046 | LTTNG_ASSERT(method); |
2047 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2048 | |
2049 | switch (lttng_userspace_probe_location_lookup_method_get_type(method)) { | |
2050 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
2051 | type_element_str = | |
2052 | mi_lttng_element_userspace_probe_location_lookup_method_function_default; | |
2053 | break; | |
2054 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
2055 | type_element_str = | |
2056 | mi_lttng_element_userspace_probe_location_lookup_method_function_elf; | |
2057 | break; | |
2058 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
2059 | type_element_str = | |
2060 | mi_lttng_element_userspace_probe_location_lookup_method_tracepoint_sdt; | |
2061 | break; | |
2062 | default: | |
2063 | abort(); | |
2064 | break; | |
2065 | } | |
2066 | ||
2067 | /* Open userspace probe location lookup method element. */ | |
2068 | ret = mi_lttng_writer_open_element(writer, | |
2069 | mi_lttng_element_userspace_probe_location_lookup_method); | |
2070 | if (ret) { | |
2071 | goto mi_error; | |
2072 | } | |
2073 | ||
2074 | /* User space probe location lookup method empty element. */ | |
2075 | ret = mi_lttng_writer_open_element(writer, type_element_str); | |
2076 | if (ret) { | |
2077 | goto mi_error; | |
2078 | } | |
2079 | ||
2080 | /* Close userspace probe location lookup method element. */ | |
2081 | ret = mi_lttng_close_multi_element(writer, 2); | |
2082 | if (ret) { | |
2083 | goto mi_error; | |
2084 | } | |
2085 | ||
2086 | ret_code = LTTNG_OK; | |
2087 | goto end; | |
2088 | ||
2089 | mi_error: | |
2090 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2091 | end: | |
2092 | return ret_code; | |
2093 | } | |
2094 | ||
2095 | static enum lttng_error_code lttng_userspace_probe_location_tracepoint_mi_serialize( | |
2096 | const struct lttng_userspace_probe_location *location, | |
2097 | struct mi_writer *writer) | |
2098 | { | |
2099 | int ret; | |
2100 | enum lttng_error_code ret_code; | |
2101 | const char *probe_name = NULL; | |
2102 | const char *provider_name = NULL; | |
2103 | const char *binary_path = NULL; | |
2104 | const struct lttng_userspace_probe_location_lookup_method | |
2105 | *lookup_method = NULL; | |
2106 | ||
a0377dfe FD |
2107 | LTTNG_ASSERT(location); |
2108 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2109 | |
2110 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name( | |
2111 | location); | |
2112 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name( | |
2113 | location); | |
2114 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path( | |
2115 | location); | |
2116 | lookup_method = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
2117 | location); | |
2118 | ||
2119 | /* Open userspace probe location tracepoint element. */ | |
2120 | ret = mi_lttng_writer_open_element(writer, | |
2121 | mi_lttng_element_userspace_probe_location_tracepoint); | |
2122 | if (ret) { | |
2123 | goto mi_error; | |
2124 | } | |
2125 | ||
2126 | /* Probe name. */ | |
2127 | ret = mi_lttng_writer_write_element_string(writer, | |
2128 | mi_lttng_element_userspace_probe_location_tracepoint_probe_name, | |
2129 | probe_name); | |
2130 | if (ret) { | |
2131 | goto mi_error; | |
2132 | } | |
2133 | ||
2134 | /* Provider name. */ | |
2135 | ret = mi_lttng_writer_write_element_string(writer, | |
2136 | mi_lttng_element_userspace_probe_location_tracepoint_provider_name, | |
2137 | provider_name); | |
2138 | if (ret) { | |
2139 | goto mi_error; | |
2140 | } | |
2141 | ||
2142 | /* Binary path. */ | |
2143 | ret = mi_lttng_writer_write_element_string(writer, | |
2144 | mi_lttng_element_userspace_probe_location_binary_path, | |
2145 | binary_path); | |
2146 | if (ret) { | |
2147 | goto mi_error; | |
2148 | } | |
2149 | ||
2150 | /* The lookup method. */ | |
2151 | ret_code = lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2152 | lookup_method, writer); | |
2153 | if (ret_code != LTTNG_OK) { | |
2154 | goto end; | |
2155 | } | |
2156 | ||
2157 | /* Close userspace probe location tracepoint. */ | |
2158 | ret = mi_lttng_writer_close_element(writer); | |
2159 | if (ret) { | |
2160 | goto mi_error; | |
2161 | } | |
2162 | ||
2163 | ret_code = LTTNG_OK; | |
2164 | goto end; | |
2165 | ||
2166 | mi_error: | |
2167 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2168 | end: | |
2169 | return ret_code; | |
2170 | } | |
2171 | ||
2172 | static enum lttng_error_code lttng_userspace_probe_location_function_mi_serialize( | |
2173 | const struct lttng_userspace_probe_location *location, | |
2174 | struct mi_writer *writer) | |
2175 | { | |
2176 | int ret; | |
2177 | enum lttng_error_code ret_code; | |
2178 | const char *function_name = NULL; | |
2179 | const char *binary_path = NULL; | |
2180 | const char *instrumentation_type_str = NULL; | |
2181 | enum lttng_userspace_probe_location_function_instrumentation_type | |
2182 | instrumentation_type; | |
2183 | const struct lttng_userspace_probe_location_lookup_method | |
2184 | *lookup_method = NULL; | |
2185 | ||
a0377dfe FD |
2186 | LTTNG_ASSERT(location); |
2187 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
2188 | |
2189 | function_name = lttng_userspace_probe_location_function_get_function_name( | |
2190 | location); | |
2191 | binary_path = lttng_userspace_probe_location_function_get_binary_path( | |
2192 | location); | |
2193 | instrumentation_type = | |
2194 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
2195 | location); | |
2196 | lookup_method = lttng_userspace_probe_location_function_get_lookup_method( | |
2197 | location); | |
2198 | ||
2199 | switch (instrumentation_type) { | |
2200 | case LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY: | |
2201 | instrumentation_type_str = | |
2202 | mi_lttng_userspace_probe_location_function_instrumentation_type_entry; | |
2203 | break; | |
2204 | default: | |
2205 | abort(); | |
2206 | break; | |
2207 | } | |
2208 | ||
2209 | /* Open userspace probe location function element. */ | |
2210 | ret = mi_lttng_writer_open_element(writer, | |
2211 | mi_lttng_element_userspace_probe_location_function); | |
2212 | if (ret) { | |
2213 | goto mi_error; | |
2214 | } | |
2215 | ||
2216 | /* Function name. */ | |
2217 | ret = mi_lttng_writer_write_element_string(writer, | |
2218 | mi_lttng_element_userspace_probe_location_function_name, | |
2219 | function_name); | |
2220 | if (ret) { | |
2221 | goto mi_error; | |
2222 | } | |
2223 | ||
2224 | /* Binary path. */ | |
2225 | ret = mi_lttng_writer_write_element_string(writer, | |
2226 | mi_lttng_element_userspace_probe_location_binary_path, | |
2227 | binary_path); | |
2228 | if (ret) { | |
2229 | goto mi_error; | |
2230 | } | |
2231 | ||
2232 | /* Instrumentation type. */ | |
2233 | ret = mi_lttng_writer_write_element_string(writer, | |
2234 | mi_lttng_element_userspace_probe_location_function_instrumentation_type, | |
2235 | instrumentation_type_str); | |
2236 | if (ret) { | |
2237 | goto mi_error; | |
2238 | } | |
2239 | ||
2240 | /* The lookup method. */ | |
2241 | ret_code = lttng_userspace_probe_location_lookup_method_mi_serialize( | |
2242 | lookup_method, writer); | |
2243 | if (ret_code != LTTNG_OK) { | |
2244 | goto end; | |
2245 | } | |
2246 | ||
2247 | /* Close userspace probe location function element. */ | |
2248 | ret = mi_lttng_writer_close_element(writer); | |
2249 | if (ret) { | |
2250 | goto mi_error; | |
2251 | } | |
2252 | ||
2253 | ret_code = LTTNG_OK; | |
2254 | goto end; | |
2255 | ||
2256 | mi_error: | |
2257 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
2258 | end: | |
2259 | return ret_code; | |
2260 | } |