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" |
1ce46cfe | 9 | #include <assert.h> |
dfcfa983 | 10 | #include <common/compat/string.h> |
1ce46cfe JG |
11 | #include <common/error.h> |
12 | #include <common/macros.h> | |
9e620ea7 JG |
13 | #include <common/payload.h> |
14 | #include <common/payload-view.h> | |
959e3c66 JR |
15 | #include <common/hashtable/hashtable.h> |
16 | #include <common/hashtable/utils.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 | |
1ce46cfe JG |
34 | enum lttng_userspace_probe_location_lookup_method_type |
35 | lttng_userspace_probe_location_lookup_method_get_type( | |
36 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
37 | { | |
38 | return lookup_method ? lookup_method->type : | |
39 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_UNKNOWN; | |
40 | } | |
41 | ||
42 | void lttng_userspace_probe_location_lookup_method_destroy( | |
43 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
44 | { | |
45 | if (!lookup_method){ | |
46 | return; | |
47 | } | |
48 | ||
5d21f143 | 49 | free(lookup_method); |
1ce46cfe JG |
50 | } |
51 | ||
52 | struct lttng_userspace_probe_location_lookup_method * | |
53 | lttng_userspace_probe_location_lookup_method_function_elf_create(void) | |
54 | { | |
55 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
56 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
57 | ||
58 | elf_method = zmalloc(sizeof(*elf_method)); | |
59 | if (!elf_method) { | |
60 | PERROR("zmalloc"); | |
61 | goto end; | |
62 | } | |
63 | ||
64 | ret = &elf_method->parent; | |
65 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
66 | end: | |
67 | return ret; | |
68 | } | |
69 | ||
f4d0bb2e FD |
70 | struct lttng_userspace_probe_location_lookup_method * |
71 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(void) | |
72 | { | |
73 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
74 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
75 | ||
76 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
77 | if (!sdt_method) { | |
78 | PERROR("zmalloc"); | |
79 | goto end; | |
80 | } | |
81 | ||
82 | ret = &sdt_method->parent; | |
83 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
84 | end: | |
85 | return ret; | |
86 | } | |
87 | ||
1ce46cfe JG |
88 | enum lttng_userspace_probe_location_type lttng_userspace_probe_location_get_type( |
89 | const struct lttng_userspace_probe_location *location) | |
90 | { | |
91 | return location ? location->type : | |
92 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_UNKNOWN; | |
93 | } | |
94 | ||
95 | static | |
96 | void lttng_userspace_probe_location_function_destroy( | |
97 | struct lttng_userspace_probe_location *location) | |
98 | { | |
99 | struct lttng_userspace_probe_location_function *location_function = NULL; | |
100 | ||
101 | assert(location); | |
102 | ||
103 | location_function = container_of(location, | |
104 | struct lttng_userspace_probe_location_function, parent); | |
105 | ||
106 | assert(location_function); | |
107 | ||
108 | free(location_function->function_name); | |
109 | free(location_function->binary_path); | |
2cde0510 | 110 | fd_handle_put(location_function->binary_fd_handle); |
1ce46cfe JG |
111 | free(location); |
112 | } | |
113 | ||
f4d0bb2e FD |
114 | static |
115 | void lttng_userspace_probe_location_tracepoint_destroy( | |
116 | struct lttng_userspace_probe_location *location) | |
117 | { | |
118 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint = NULL; | |
119 | ||
120 | assert(location); | |
121 | ||
122 | location_tracepoint = container_of(location, | |
123 | struct lttng_userspace_probe_location_tracepoint, | |
124 | parent); | |
125 | ||
126 | assert(location_tracepoint); | |
127 | ||
128 | free(location_tracepoint->probe_name); | |
129 | free(location_tracepoint->provider_name); | |
130 | free(location_tracepoint->binary_path); | |
2cde0510 | 131 | fd_handle_put(location_tracepoint->binary_fd_handle); |
f4d0bb2e FD |
132 | free(location); |
133 | } | |
134 | ||
1ce46cfe JG |
135 | void lttng_userspace_probe_location_destroy( |
136 | struct lttng_userspace_probe_location *location) | |
137 | { | |
138 | if (!location) { | |
139 | return; | |
140 | } | |
141 | ||
142 | lttng_userspace_probe_location_lookup_method_destroy( | |
143 | location->lookup_method); | |
144 | ||
145 | switch (location->type) { | |
146 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
147 | lttng_userspace_probe_location_function_destroy(location); | |
148 | break; | |
f4d0bb2e FD |
149 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
150 | lttng_userspace_probe_location_tracepoint_destroy(location); | |
151 | break; | |
1ce46cfe | 152 | default: |
adf53c67 | 153 | abort(); |
1ce46cfe JG |
154 | } |
155 | } | |
156 | ||
dfcfa983 JR |
157 | /* Compare two file descriptors based on their inode and device numbers. */ |
158 | static bool fd_is_equal(int a, int b) | |
159 | { | |
160 | int ret; | |
161 | bool is_equal = false; | |
162 | struct stat a_stat, b_stat; | |
163 | ||
164 | if (a < 0 && b >= 0) { | |
165 | goto end; | |
166 | } | |
167 | ||
168 | if (b < 0 && a >= 0) { | |
169 | goto end; | |
170 | } | |
171 | ||
172 | if (a < 0 && b < 0) { | |
173 | if (a == -1 && b == -1) { | |
174 | is_equal = true; | |
175 | goto end; | |
176 | } | |
177 | ||
178 | /* Invalid state, abort. */ | |
179 | abort(); | |
180 | } | |
181 | ||
182 | /* Both are valid file descriptors. */ | |
183 | ret = fstat(a, &a_stat); | |
184 | if (ret) { | |
185 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
186 | a); | |
187 | goto end; | |
188 | } | |
189 | ||
190 | ret = fstat(b, &b_stat); | |
191 | if (ret) { | |
192 | PERROR("Failed to fstat userspace probe location binary fd %d", | |
193 | b); | |
194 | goto end; | |
195 | } | |
196 | ||
197 | is_equal = (a_stat.st_ino == b_stat.st_ino) && | |
198 | (a_stat.st_dev == b_stat.st_dev); | |
199 | ||
200 | end: | |
201 | return is_equal; | |
202 | } | |
203 | ||
959e3c66 JR |
204 | static unsigned long lttng_userspace_probe_location_function_hash( |
205 | const struct lttng_userspace_probe_location *location) | |
206 | { | |
207 | unsigned long hash = hash_key_ulong( | |
208 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION, | |
209 | lttng_ht_seed); | |
210 | struct lttng_userspace_probe_location_function *function_location = | |
211 | container_of(location, typeof(*function_location), | |
212 | parent); | |
213 | ||
214 | hash ^= hash_key_str(function_location->function_name, lttng_ht_seed); | |
215 | hash ^= hash_key_str(function_location->binary_path, lttng_ht_seed); | |
216 | /* | |
217 | * No need to hash on the fd. Worst comes to worse, | |
218 | * the equal function will discriminate. | |
219 | */ | |
220 | return hash; | |
221 | } | |
222 | ||
dfcfa983 JR |
223 | static bool lttng_userspace_probe_location_function_is_equal( |
224 | const struct lttng_userspace_probe_location *_a, | |
225 | const struct lttng_userspace_probe_location *_b) | |
226 | { | |
227 | bool is_equal = false; | |
228 | struct lttng_userspace_probe_location_function *a, *b; | |
229 | ||
230 | a = container_of(_a, struct lttng_userspace_probe_location_function, | |
231 | parent); | |
232 | b = container_of(_b, struct lttng_userspace_probe_location_function, | |
233 | parent); | |
234 | ||
235 | if (a->instrumentation_type != b->instrumentation_type) { | |
236 | goto end; | |
237 | } | |
238 | ||
239 | assert(a->function_name); | |
240 | assert(b->function_name); | |
241 | if (strcmp(a->function_name, b->function_name)) { | |
242 | goto end; | |
243 | } | |
244 | ||
245 | assert(a->binary_path); | |
246 | assert(b->binary_path); | |
247 | if (strcmp(a->binary_path, b->binary_path)) { | |
248 | goto end; | |
249 | } | |
250 | ||
2cde0510 JG |
251 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
252 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
253 | end: |
254 | return is_equal; | |
255 | } | |
256 | ||
1ce46cfe JG |
257 | static struct lttng_userspace_probe_location * |
258 | lttng_userspace_probe_location_function_create_no_check(const char *binary_path, | |
259 | const char *function_name, | |
260 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
261 | bool open_binary) | |
262 | { | |
263 | int binary_fd = -1; | |
fe489250 | 264 | struct fd_handle *binary_fd_handle = NULL; |
1ce46cfe JG |
265 | char *function_name_copy = NULL, *binary_path_copy = NULL; |
266 | struct lttng_userspace_probe_location *ret = NULL; | |
267 | struct lttng_userspace_probe_location_function *location; | |
268 | ||
269 | if (open_binary) { | |
270 | binary_fd = open(binary_path, O_RDONLY); | |
271 | if (binary_fd < 0) { | |
272 | PERROR("Error opening the binary"); | |
273 | goto error; | |
274 | } | |
fe489250 JG |
275 | |
276 | binary_fd_handle = fd_handle_create(binary_fd); | |
277 | if (!binary_fd) { | |
278 | goto error; | |
279 | } | |
280 | ||
281 | /* Ownership transferred to fd_handle. */ | |
1ce46cfe JG |
282 | binary_fd = -1; |
283 | } | |
284 | ||
285 | function_name_copy = lttng_strndup(function_name, LTTNG_SYMBOL_NAME_LEN); | |
286 | if (!function_name_copy) { | |
287 | PERROR("Error duplicating the function name"); | |
288 | goto error; | |
289 | } | |
290 | ||
291 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
292 | if (!binary_path_copy) { | |
293 | PERROR("Error duplicating the function name"); | |
294 | goto error; | |
295 | } | |
296 | ||
297 | location = zmalloc(sizeof(*location)); | |
298 | if (!location) { | |
299 | PERROR("Error allocating userspace probe location"); | |
300 | goto error; | |
301 | } | |
302 | ||
303 | location->function_name = function_name_copy; | |
304 | location->binary_path = binary_path_copy; | |
2cde0510 | 305 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 306 | binary_fd_handle = NULL; |
9d3981b5 JG |
307 | location->instrumentation_type = |
308 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY; | |
1ce46cfe JG |
309 | |
310 | ret = &location->parent; | |
311 | ret->lookup_method = lookup_method; | |
312 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION; | |
dfcfa983 | 313 | ret->equal = lttng_userspace_probe_location_function_is_equal; |
959e3c66 | 314 | ret->hash = lttng_userspace_probe_location_function_hash; |
1ce46cfe JG |
315 | goto end; |
316 | ||
317 | error: | |
318 | free(function_name_copy); | |
319 | free(binary_path_copy); | |
320 | if (binary_fd >= 0) { | |
321 | if (close(binary_fd)) { | |
322 | PERROR("Error closing binary fd in error path"); | |
323 | } | |
324 | } | |
fe489250 | 325 | fd_handle_put(binary_fd_handle); |
1ce46cfe JG |
326 | end: |
327 | return ret; | |
328 | } | |
329 | ||
959e3c66 JR |
330 | static unsigned long lttng_userspace_probe_location_tracepoint_hash( |
331 | const struct lttng_userspace_probe_location *location) | |
332 | { | |
333 | unsigned long hash = hash_key_ulong( | |
334 | (void *) LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT, | |
335 | lttng_ht_seed); | |
336 | struct lttng_userspace_probe_location_tracepoint *tp_location = | |
337 | container_of(location, typeof(*tp_location), parent); | |
338 | ||
339 | hash ^= hash_key_str(tp_location->probe_name, lttng_ht_seed); | |
340 | hash ^= hash_key_str(tp_location->provider_name, lttng_ht_seed); | |
341 | hash ^= hash_key_str(tp_location->binary_path, lttng_ht_seed); | |
342 | /* | |
343 | * No need to hash on the fd. Worst comes to worse, | |
344 | * the equal function will discriminate. | |
345 | */ | |
346 | return hash; | |
347 | } | |
348 | ||
dfcfa983 JR |
349 | static bool lttng_userspace_probe_location_tracepoint_is_equal( |
350 | const struct lttng_userspace_probe_location *_a, | |
351 | const struct lttng_userspace_probe_location *_b) | |
352 | { | |
353 | bool is_equal = false; | |
354 | struct lttng_userspace_probe_location_tracepoint *a, *b; | |
355 | ||
356 | a = container_of(_a, struct lttng_userspace_probe_location_tracepoint, | |
357 | parent); | |
358 | b = container_of(_b, struct lttng_userspace_probe_location_tracepoint, | |
359 | parent); | |
360 | ||
361 | assert(a->probe_name); | |
362 | assert(b->probe_name); | |
363 | if (strcmp(a->probe_name, b->probe_name)) { | |
364 | goto end; | |
365 | } | |
366 | ||
367 | assert(a->provider_name); | |
368 | assert(b->provider_name); | |
369 | if (strcmp(a->provider_name, b->provider_name)) { | |
370 | goto end; | |
371 | } | |
372 | ||
373 | assert(a->binary_path); | |
374 | assert(b->binary_path); | |
375 | if (strcmp(a->binary_path, b->binary_path)) { | |
376 | goto end; | |
377 | } | |
378 | ||
2cde0510 JG |
379 | is_equal = fd_is_equal(a->binary_fd_handle ? fd_handle_get_fd(a->binary_fd_handle) : -1, |
380 | b->binary_fd_handle ? fd_handle_get_fd(b->binary_fd_handle) : -1); | |
dfcfa983 JR |
381 | |
382 | end: | |
383 | return is_equal; | |
384 | } | |
385 | ||
f4d0bb2e FD |
386 | static struct lttng_userspace_probe_location * |
387 | lttng_userspace_probe_location_tracepoint_create_no_check(const char *binary_path, | |
388 | const char *provider_name, const char *probe_name, | |
389 | struct lttng_userspace_probe_location_lookup_method *lookup_method, | |
390 | bool open_binary) | |
391 | { | |
392 | int binary_fd = -1; | |
fe489250 | 393 | struct fd_handle *binary_fd_handle = NULL; |
f4d0bb2e FD |
394 | char *probe_name_copy = NULL; |
395 | char *provider_name_copy = NULL; | |
396 | char *binary_path_copy = NULL; | |
397 | struct lttng_userspace_probe_location *ret = NULL; | |
398 | struct lttng_userspace_probe_location_tracepoint *location; | |
399 | ||
400 | if (open_binary) { | |
401 | binary_fd = open(binary_path, O_RDONLY); | |
402 | if (binary_fd < 0) { | |
403 | PERROR("open"); | |
404 | goto error; | |
405 | } | |
fe489250 JG |
406 | |
407 | binary_fd_handle = fd_handle_create(binary_fd); | |
408 | if (!binary_fd) { | |
409 | goto error; | |
410 | } | |
411 | ||
412 | /* Ownership transferred to fd_handle. */ | |
f4d0bb2e FD |
413 | binary_fd = -1; |
414 | } | |
415 | ||
416 | probe_name_copy = lttng_strndup(probe_name, LTTNG_SYMBOL_NAME_LEN); | |
417 | if (!probe_name_copy) { | |
418 | PERROR("lttng_strndup"); | |
419 | goto error; | |
420 | } | |
421 | ||
422 | provider_name_copy = lttng_strndup(provider_name, LTTNG_SYMBOL_NAME_LEN); | |
423 | if (!provider_name_copy) { | |
424 | PERROR("lttng_strndup"); | |
425 | goto error; | |
426 | } | |
427 | ||
428 | binary_path_copy = lttng_strndup(binary_path, LTTNG_PATH_MAX); | |
429 | if (!binary_path_copy) { | |
430 | PERROR("lttng_strndup"); | |
431 | goto error; | |
432 | } | |
433 | ||
434 | location = zmalloc(sizeof(*location)); | |
435 | if (!location) { | |
436 | PERROR("zmalloc"); | |
437 | goto error; | |
438 | } | |
439 | ||
440 | location->probe_name = probe_name_copy; | |
441 | location->provider_name = provider_name_copy; | |
442 | location->binary_path = binary_path_copy; | |
2cde0510 | 443 | location->binary_fd_handle = binary_fd_handle; |
fe489250 | 444 | binary_fd_handle = NULL; |
f4d0bb2e FD |
445 | |
446 | ret = &location->parent; | |
447 | ret->lookup_method = lookup_method; | |
448 | ret->type = LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT; | |
dfcfa983 | 449 | ret->equal = lttng_userspace_probe_location_tracepoint_is_equal; |
959e3c66 | 450 | ret->hash = lttng_userspace_probe_location_tracepoint_hash; |
f4d0bb2e FD |
451 | goto end; |
452 | ||
453 | error: | |
454 | free(probe_name_copy); | |
455 | free(provider_name_copy); | |
7c86453b | 456 | free(binary_path_copy); |
f4d0bb2e FD |
457 | if (binary_fd >= 0) { |
458 | if (close(binary_fd)) { | |
459 | PERROR("Error closing binary fd in error path"); | |
460 | } | |
461 | } | |
fe489250 | 462 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
463 | end: |
464 | return ret; | |
465 | } | |
466 | ||
1ce46cfe JG |
467 | struct lttng_userspace_probe_location * |
468 | lttng_userspace_probe_location_function_create(const char *binary_path, | |
469 | const char *function_name, | |
470 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
471 | { | |
472 | struct lttng_userspace_probe_location *ret = NULL; | |
473 | ||
474 | if (!binary_path || !function_name) { | |
f04a8200 | 475 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
476 | goto end; |
477 | } | |
478 | ||
479 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
480 | lookup_method)) { | |
481 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
482 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
483 | break; | |
484 | default: | |
485 | /* Invalid probe location lookup method. */ | |
486 | goto end; | |
487 | } | |
488 | ||
489 | ret = lttng_userspace_probe_location_function_create_no_check( | |
490 | binary_path, function_name, lookup_method, true); | |
491 | end: | |
492 | return ret; | |
493 | } | |
494 | ||
f4d0bb2e FD |
495 | struct lttng_userspace_probe_location * |
496 | lttng_userspace_probe_location_tracepoint_create(const char *binary_path, | |
497 | const char *provider_name, const char *probe_name, | |
498 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
499 | { | |
500 | struct lttng_userspace_probe_location *ret = NULL; | |
501 | ||
502 | if (!binary_path || !probe_name || !provider_name) { | |
f04a8200 | 503 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
504 | goto end; |
505 | } | |
506 | ||
507 | switch (lttng_userspace_probe_location_lookup_method_get_type( | |
508 | lookup_method)) { | |
509 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
510 | break; | |
511 | default: | |
512 | /* Invalid probe location lookup method. */ | |
513 | goto end; | |
514 | } | |
515 | ||
516 | ret = lttng_userspace_probe_location_tracepoint_create_no_check( | |
517 | binary_path, provider_name, probe_name, lookup_method, true); | |
518 | end: | |
519 | return ret; | |
520 | } | |
521 | ||
394357fe FD |
522 | static struct lttng_userspace_probe_location_lookup_method * |
523 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
524 | const struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
525 | { | |
526 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
527 | struct lttng_userspace_probe_location_lookup_method_elf *elf_method; | |
528 | ||
529 | assert(lookup_method); | |
530 | assert(lookup_method->type == | |
531 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF); | |
532 | ||
533 | elf_method = zmalloc(sizeof(*elf_method)); | |
534 | if (!elf_method) { | |
535 | PERROR("Error allocating ELF userspace probe lookup method"); | |
536 | goto error; | |
537 | } | |
538 | ||
539 | elf_method->parent.type = lookup_method->type; | |
540 | parent = &elf_method->parent; | |
541 | ||
542 | goto end; | |
543 | error: | |
544 | parent = NULL; | |
545 | end: | |
546 | return parent; | |
547 | } | |
548 | ||
f4d0bb2e FD |
549 | static struct lttng_userspace_probe_location_lookup_method * |
550 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
551 | struct lttng_userspace_probe_location_lookup_method *lookup_method) | |
552 | { | |
553 | struct lttng_userspace_probe_location_lookup_method *parent = NULL; | |
554 | struct lttng_userspace_probe_location_lookup_method_sdt *sdt_method; | |
555 | ||
556 | assert(lookup_method); | |
557 | assert(lookup_method->type == | |
558 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT); | |
559 | ||
560 | sdt_method = zmalloc(sizeof(*sdt_method)); | |
561 | if (!sdt_method) { | |
562 | PERROR("zmalloc"); | |
563 | goto error; | |
564 | } | |
565 | ||
566 | sdt_method->parent.type = lookup_method->type; | |
567 | parent = &sdt_method->parent; | |
568 | ||
569 | goto end; | |
570 | ||
571 | error: | |
572 | parent = NULL; | |
573 | end: | |
574 | return parent; | |
575 | } | |
576 | ||
394357fe FD |
577 | static struct lttng_userspace_probe_location * |
578 | lttng_userspace_probe_location_function_copy( | |
579 | const struct lttng_userspace_probe_location *location) | |
580 | { | |
581 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
582 | struct lttng_userspace_probe_location *new_location = NULL; | |
583 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
584 | const char *binary_path = NULL; |
585 | const char *function_name = NULL; | |
fe489250 | 586 | struct lttng_userspace_probe_location_function *function_location; |
394357fe FD |
587 | |
588 | assert(location); | |
589 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
fe489250 JG |
590 | function_location = container_of( |
591 | location, typeof(*function_location), parent); | |
394357fe | 592 | |
cc831309 FD |
593 | /* Get probe location fields */ |
594 | binary_path = lttng_userspace_probe_location_function_get_binary_path(location); | |
394357fe | 595 | if (!binary_path) { |
cc831309 | 596 | ERR("Userspace probe binary path is NULL"); |
394357fe FD |
597 | goto error; |
598 | } | |
599 | ||
cc831309 | 600 | function_name = lttng_userspace_probe_location_function_get_function_name(location); |
394357fe | 601 | if (!function_name) { |
cc831309 | 602 | ERR("Userspace probe function name is NULL"); |
394357fe FD |
603 | goto error; |
604 | } | |
605 | ||
394357fe FD |
606 | /* |
607 | * Duplicate probe location method fields | |
608 | */ | |
609 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
610 | location->lookup_method); | |
611 | switch (lookup_type) { | |
612 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
613 | lookup_method = | |
614 | lttng_userspace_probe_location_lookup_method_function_elf_copy( | |
615 | location->lookup_method); | |
616 | if (!lookup_method) { | |
fe489250 | 617 | goto error; |
394357fe FD |
618 | } |
619 | break; | |
620 | default: | |
621 | /* Invalid probe location lookup method. */ | |
fe489250 | 622 | goto error; |
394357fe FD |
623 | } |
624 | ||
625 | /* Create the probe_location */ | |
626 | new_location = lttng_userspace_probe_location_function_create_no_check( | |
cc831309 | 627 | binary_path, function_name, lookup_method, false); |
394357fe FD |
628 | if (!new_location) { |
629 | goto destroy_lookup_method; | |
630 | } | |
631 | ||
632 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
633 | if (lttng_userspace_probe_location_function_set_binary_fd_handle(new_location, |
634 | function_location->binary_fd_handle) < 0) { | |
394357fe FD |
635 | goto destroy_probe_location; |
636 | } | |
637 | ||
638 | goto end; | |
639 | ||
640 | destroy_probe_location: | |
641 | lttng_userspace_probe_location_destroy(new_location); | |
642 | destroy_lookup_method: | |
643 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
394357fe | 644 | error: |
394357fe FD |
645 | new_location = NULL; |
646 | end: | |
647 | return new_location; | |
648 | } | |
649 | ||
f4d0bb2e FD |
650 | static struct lttng_userspace_probe_location * |
651 | lttng_userspace_probe_location_tracepoint_copy( | |
652 | const struct lttng_userspace_probe_location *location) | |
653 | { | |
654 | enum lttng_userspace_probe_location_lookup_method_type lookup_type; | |
655 | struct lttng_userspace_probe_location *new_location = NULL; | |
656 | struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL; | |
cc831309 FD |
657 | const char *binary_path = NULL; |
658 | const char *probe_name = NULL; | |
659 | const char *provider_name = NULL; | |
fe489250 | 660 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; |
f4d0bb2e FD |
661 | |
662 | assert(location); | |
663 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
fe489250 JG |
664 | tracepoint_location = container_of( |
665 | location, typeof(*tracepoint_location), parent); | |
f4d0bb2e | 666 | |
fe489250 | 667 | /* Get probe location fields */ |
cc831309 | 668 | binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location); |
f4d0bb2e | 669 | if (!binary_path) { |
cc831309 | 670 | ERR("Userspace probe binary path is NULL"); |
f4d0bb2e FD |
671 | goto error; |
672 | } | |
673 | ||
cc831309 | 674 | probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location); |
f4d0bb2e | 675 | if (!probe_name) { |
cc831309 | 676 | ERR("Userspace probe probe name is NULL"); |
f4d0bb2e FD |
677 | goto error; |
678 | } | |
679 | ||
cc831309 | 680 | provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location); |
f4d0bb2e | 681 | if (!provider_name) { |
cc831309 | 682 | ERR("Userspace probe provider name is NULL"); |
f4d0bb2e FD |
683 | goto error; |
684 | } | |
685 | ||
f4d0bb2e FD |
686 | /* |
687 | * Duplicate probe location method fields | |
688 | */ | |
689 | lookup_type = lttng_userspace_probe_location_lookup_method_get_type( | |
690 | location->lookup_method); | |
691 | switch (lookup_type) { | |
692 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: | |
693 | lookup_method = | |
694 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_copy( | |
695 | location->lookup_method); | |
696 | if (!lookup_method) { | |
fe489250 | 697 | goto error; |
f4d0bb2e FD |
698 | } |
699 | break; | |
700 | default: | |
701 | /* Invalid probe location lookup method. */ | |
fe489250 | 702 | goto error; |
f4d0bb2e FD |
703 | } |
704 | ||
705 | /* Create the probe_location */ | |
706 | new_location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
cc831309 | 707 | binary_path, provider_name, probe_name, lookup_method, false); |
f4d0bb2e FD |
708 | if (!new_location) { |
709 | goto destroy_lookup_method; | |
710 | } | |
711 | ||
712 | /* Set the duplicated fd to the new probe_location */ | |
2cde0510 JG |
713 | if (lttng_userspace_probe_location_tracepoint_set_binary_fd_handle(new_location, |
714 | tracepoint_location->binary_fd_handle) < 0) { | |
f4d0bb2e FD |
715 | goto destroy_probe_location; |
716 | } | |
717 | ||
718 | goto end; | |
719 | ||
720 | destroy_probe_location: | |
721 | lttng_userspace_probe_location_destroy(new_location); | |
722 | destroy_lookup_method: | |
723 | lttng_userspace_probe_location_lookup_method_destroy(lookup_method); | |
f4d0bb2e | 724 | error: |
f4d0bb2e FD |
725 | new_location = NULL; |
726 | end: | |
727 | return new_location; | |
728 | } | |
729 | ||
1ce46cfe JG |
730 | const char *lttng_userspace_probe_location_function_get_binary_path( |
731 | const struct lttng_userspace_probe_location *location) | |
732 | { | |
733 | const char *ret = NULL; | |
734 | struct lttng_userspace_probe_location_function *function_location; | |
735 | ||
736 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
737 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 738 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
739 | goto end; |
740 | } | |
741 | ||
742 | function_location = container_of(location, | |
743 | struct lttng_userspace_probe_location_function, | |
744 | parent); | |
745 | ret = function_location->binary_path; | |
746 | end: | |
747 | return ret; | |
748 | } | |
749 | ||
f4d0bb2e FD |
750 | const char *lttng_userspace_probe_location_tracepoint_get_binary_path( |
751 | const struct lttng_userspace_probe_location *location) | |
752 | { | |
753 | const char *ret = NULL; | |
754 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
755 | ||
756 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
757 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 758 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
759 | goto end; |
760 | } | |
761 | ||
762 | tracepoint_location = container_of(location, | |
763 | struct lttng_userspace_probe_location_tracepoint, | |
764 | parent); | |
765 | ret = tracepoint_location->binary_path; | |
766 | end: | |
767 | return ret; | |
768 | } | |
769 | ||
1ce46cfe JG |
770 | const char *lttng_userspace_probe_location_function_get_function_name( |
771 | const struct lttng_userspace_probe_location *location) | |
772 | { | |
773 | const char *ret = NULL; | |
774 | struct lttng_userspace_probe_location_function *function_location; | |
775 | ||
776 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
777 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 778 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
779 | goto end; |
780 | } | |
781 | ||
782 | function_location = container_of(location, | |
783 | struct lttng_userspace_probe_location_function, parent); | |
784 | ret = function_location->function_name; | |
785 | end: | |
786 | return ret; | |
787 | } | |
788 | ||
f4d0bb2e FD |
789 | const char *lttng_userspace_probe_location_tracepoint_get_probe_name( |
790 | const struct lttng_userspace_probe_location *location) | |
791 | { | |
792 | const char *ret = NULL; | |
793 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
794 | ||
795 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
796 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 797 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
798 | goto end; |
799 | } | |
800 | ||
801 | tracepoint_location = container_of(location, | |
802 | struct lttng_userspace_probe_location_tracepoint, parent); | |
803 | ret = tracepoint_location->probe_name; | |
804 | end: | |
805 | return ret; | |
806 | } | |
807 | ||
808 | const char *lttng_userspace_probe_location_tracepoint_get_provider_name( | |
809 | const struct lttng_userspace_probe_location *location) | |
810 | { | |
811 | const char *ret = NULL; | |
812 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
813 | ||
814 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
815 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 816 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
817 | goto end; |
818 | } | |
819 | ||
820 | tracepoint_location = container_of(location, | |
821 | struct lttng_userspace_probe_location_tracepoint, parent); | |
822 | ret = tracepoint_location->provider_name; | |
823 | end: | |
824 | return ret; | |
825 | } | |
826 | ||
1ce46cfe JG |
827 | int lttng_userspace_probe_location_function_get_binary_fd( |
828 | const struct lttng_userspace_probe_location *location) | |
829 | { | |
830 | int ret = -1; | |
831 | struct lttng_userspace_probe_location_function *function_location; | |
832 | ||
833 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
834 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 835 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
836 | goto end; |
837 | } | |
838 | ||
839 | function_location = container_of(location, | |
840 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 JG |
841 | ret = function_location->binary_fd_handle ? |
842 | fd_handle_get_fd(function_location->binary_fd_handle) : -1; | |
1ce46cfe JG |
843 | end: |
844 | return ret; | |
845 | } | |
846 | ||
9d3981b5 JG |
847 | enum lttng_userspace_probe_location_function_instrumentation_type |
848 | lttng_userspace_probe_location_function_get_instrumentation_type( | |
849 | const struct lttng_userspace_probe_location *location) | |
850 | { | |
851 | enum lttng_userspace_probe_location_function_instrumentation_type type; | |
852 | struct lttng_userspace_probe_location_function *function_location; | |
853 | ||
854 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
855 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 856 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
857 | type = LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_UNKNOWN; |
858 | goto end; | |
859 | } | |
860 | ||
861 | function_location = container_of(location, | |
862 | struct lttng_userspace_probe_location_function, parent); | |
863 | type = function_location->instrumentation_type; | |
864 | end: | |
865 | return type; | |
866 | } | |
867 | ||
868 | enum lttng_userspace_probe_location_status | |
869 | lttng_userspace_probe_location_function_set_instrumentation_type( | |
870 | const struct lttng_userspace_probe_location *location, | |
871 | enum lttng_userspace_probe_location_function_instrumentation_type instrumentation_type) | |
872 | { | |
873 | enum lttng_userspace_probe_location_status status = | |
874 | LTTNG_USERSPACE_PROBE_LOCATION_STATUS_OK; | |
875 | struct lttng_userspace_probe_location_function *function_location; | |
876 | ||
877 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
878 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION || | |
879 | instrumentation_type != | |
880 | LTTNG_USERSPACE_PROBE_LOCATION_FUNCTION_INSTRUMENTATION_TYPE_ENTRY) { | |
f04a8200 | 881 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
9d3981b5 JG |
882 | status = LTTNG_USERSPACE_PROBE_LOCATION_STATUS_INVALID; |
883 | goto end; | |
884 | } | |
885 | ||
886 | function_location = container_of(location, | |
887 | struct lttng_userspace_probe_location_function, parent); | |
888 | function_location->instrumentation_type = instrumentation_type; | |
889 | end: | |
890 | return status; | |
891 | } | |
892 | ||
f4d0bb2e FD |
893 | int lttng_userspace_probe_location_tracepoint_get_binary_fd( |
894 | const struct lttng_userspace_probe_location *location) | |
895 | { | |
896 | int ret = -1; | |
897 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
898 | ||
899 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
900 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT) { | |
f04a8200 | 901 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
902 | goto end; |
903 | } | |
904 | ||
905 | tracepoint_location = container_of(location, | |
906 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 JG |
907 | ret = tracepoint_location->binary_fd_handle ? |
908 | fd_handle_get_fd(tracepoint_location->binary_fd_handle) : -1; | |
f4d0bb2e FD |
909 | end: |
910 | return ret; | |
911 | } | |
912 | ||
1ce46cfe JG |
913 | static struct lttng_userspace_probe_location_lookup_method * |
914 | lttng_userspace_probe_location_function_get_lookup_method( | |
915 | const struct lttng_userspace_probe_location *location) | |
916 | { | |
917 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
918 | ||
919 | if (!location || lttng_userspace_probe_location_get_type(location) != | |
920 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION) { | |
f04a8200 | 921 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
922 | goto end; |
923 | } | |
924 | ||
925 | ret = location->lookup_method; | |
926 | end: | |
927 | return ret; | |
928 | } | |
929 | ||
f4d0bb2e FD |
930 | static struct lttng_userspace_probe_location_lookup_method * |
931 | lttng_userspace_probe_location_tracepoint_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_TRACEPOINT) { | |
f04a8200 | 938 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
f4d0bb2e FD |
939 | goto end; |
940 | } | |
941 | ||
942 | ret = location->lookup_method; | |
943 | end: | |
944 | return ret; | |
945 | } | |
946 | ||
87597c2c | 947 | const struct lttng_userspace_probe_location_lookup_method * |
1ce46cfe JG |
948 | lttng_userspace_probe_location_get_lookup_method( |
949 | const struct lttng_userspace_probe_location *location) | |
950 | { | |
951 | struct lttng_userspace_probe_location_lookup_method *ret = NULL; | |
952 | ||
953 | assert(location); | |
954 | switch (location->type) { | |
955 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
956 | ret = lttng_userspace_probe_location_function_get_lookup_method( | |
957 | location); | |
958 | break; | |
f4d0bb2e FD |
959 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
960 | ret = lttng_userspace_probe_location_tracepoint_get_lookup_method( | |
961 | location); | |
962 | break; | |
1ce46cfe JG |
963 | default: |
964 | ERR("Unknowned lookup method."); | |
965 | break; | |
966 | } | |
967 | return ret; | |
968 | } | |
969 | ||
970 | static | |
971 | int lttng_userspace_probe_location_lookup_method_serialize( | |
972 | struct lttng_userspace_probe_location_lookup_method *method, | |
e368fb43 | 973 | struct lttng_payload *payload) |
1ce46cfe JG |
974 | { |
975 | int ret; | |
976 | struct lttng_userspace_probe_location_lookup_method_comm | |
977 | lookup_method_comm; | |
978 | ||
979 | lookup_method_comm.type = (int8_t) (method ? method->type : | |
980 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT); | |
e368fb43 JG |
981 | if (payload) { |
982 | ret = lttng_dynamic_buffer_append(&payload->buffer, &lookup_method_comm, | |
1ce46cfe JG |
983 | sizeof(lookup_method_comm)); |
984 | if (ret) { | |
985 | goto end; | |
986 | } | |
987 | } | |
f4d0bb2e FD |
988 | ret = sizeof(lookup_method_comm); |
989 | end: | |
990 | return ret; | |
991 | } | |
992 | ||
993 | static | |
994 | int lttng_userspace_probe_location_function_serialize( | |
995 | const struct lttng_userspace_probe_location *location, | |
e368fb43 | 996 | struct lttng_payload *payload) |
f4d0bb2e FD |
997 | { |
998 | int ret; | |
999 | size_t function_name_len, binary_path_len; | |
1000 | struct lttng_userspace_probe_location_function *location_function; | |
1001 | struct lttng_userspace_probe_location_function_comm location_function_comm; | |
1002 | ||
1003 | assert(location); | |
1004 | assert(lttng_userspace_probe_location_get_type(location) == | |
1005 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1006 | ||
1007 | location_function = container_of(location, | |
1008 | struct lttng_userspace_probe_location_function, | |
1009 | parent); | |
1010 | if (!location_function->function_name || !location_function->binary_path) { | |
1011 | ret = -LTTNG_ERR_INVALID; | |
1012 | goto end; | |
1013 | } | |
1014 | ||
2cde0510 | 1015 | if (payload && !location_function->binary_fd_handle) { |
f4d0bb2e FD |
1016 | ret = -LTTNG_ERR_INVALID; |
1017 | goto end; | |
1018 | } | |
1019 | ||
f4d0bb2e FD |
1020 | function_name_len = strlen(location_function->function_name); |
1021 | if (function_name_len == 0) { | |
1022 | ret = -LTTNG_ERR_INVALID; | |
1023 | goto end; | |
1024 | } | |
1025 | binary_path_len = strlen(location_function->binary_path); | |
1026 | if (binary_path_len == 0) { | |
1027 | ret = -LTTNG_ERR_INVALID; | |
1028 | goto end; | |
1029 | } | |
1030 | ||
1031 | location_function_comm.function_name_len = function_name_len + 1; | |
1032 | location_function_comm.binary_path_len = binary_path_len + 1; | |
1033 | ||
e368fb43 JG |
1034 | if (payload) { |
1035 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1036 | &location_function_comm, |
1037 | sizeof(location_function_comm)); | |
1038 | if (ret) { | |
1039 | ret = -LTTNG_ERR_INVALID; | |
1040 | goto end; | |
1041 | } | |
e368fb43 | 1042 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1043 | location_function->function_name, |
1044 | location_function_comm.function_name_len); | |
1045 | if (ret) { | |
1046 | ret = -LTTNG_ERR_INVALID; | |
1047 | goto end; | |
1048 | } | |
e368fb43 | 1049 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1050 | location_function->binary_path, |
1051 | location_function_comm.binary_path_len); | |
1052 | if (ret) { | |
1053 | ret = -LTTNG_ERR_INVALID; | |
1054 | goto end; | |
1055 | } | |
fe489250 | 1056 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1057 | payload, location_function->binary_fd_handle); |
e368fb43 JG |
1058 | if (ret) { |
1059 | ret = -LTTNG_ERR_INVALID; | |
1060 | goto end; | |
1061 | } | |
f4d0bb2e FD |
1062 | } |
1063 | ret = sizeof(location_function_comm) + | |
1064 | location_function_comm.function_name_len + | |
1065 | location_function_comm.binary_path_len; | |
1ce46cfe JG |
1066 | end: |
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | static | |
f4d0bb2e | 1071 | int lttng_userspace_probe_location_tracepoint_serialize( |
1ce46cfe | 1072 | const struct lttng_userspace_probe_location *location, |
e368fb43 | 1073 | struct lttng_payload *payload) |
1ce46cfe JG |
1074 | { |
1075 | int ret; | |
f4d0bb2e FD |
1076 | size_t probe_name_len, provider_name_len, binary_path_len; |
1077 | struct lttng_userspace_probe_location_tracepoint *location_tracepoint; | |
1078 | struct lttng_userspace_probe_location_tracepoint_comm location_tracepoint_comm; | |
1ce46cfe JG |
1079 | |
1080 | assert(location); | |
1081 | assert(lttng_userspace_probe_location_get_type(location) == | |
f4d0bb2e | 1082 | LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); |
1ce46cfe | 1083 | |
f4d0bb2e FD |
1084 | location_tracepoint = container_of(location, |
1085 | struct lttng_userspace_probe_location_tracepoint, | |
1ce46cfe | 1086 | parent); |
f4d0bb2e FD |
1087 | if (!location_tracepoint->probe_name || |
1088 | !location_tracepoint->provider_name || | |
1089 | !location_tracepoint->binary_path) { | |
1ce46cfe JG |
1090 | ret = -LTTNG_ERR_INVALID; |
1091 | goto end; | |
1092 | } | |
1093 | ||
2cde0510 | 1094 | if (payload && !location_tracepoint->binary_fd_handle) { |
1ce46cfe JG |
1095 | ret = -LTTNG_ERR_INVALID; |
1096 | goto end; | |
1097 | } | |
1098 | ||
f4d0bb2e FD |
1099 | probe_name_len = strlen(location_tracepoint->probe_name); |
1100 | if (probe_name_len == 0) { | |
1ce46cfe JG |
1101 | ret = -LTTNG_ERR_INVALID; |
1102 | goto end; | |
1103 | } | |
f4d0bb2e FD |
1104 | |
1105 | provider_name_len = strlen(location_tracepoint->provider_name); | |
1106 | if (provider_name_len == 0) { | |
1107 | ret = -LTTNG_ERR_INVALID; | |
1108 | goto end; | |
1109 | } | |
1110 | ||
1111 | binary_path_len = strlen(location_tracepoint->binary_path); | |
1ce46cfe JG |
1112 | if (binary_path_len == 0) { |
1113 | ret = -LTTNG_ERR_INVALID; | |
1114 | goto end; | |
1115 | } | |
1116 | ||
f4d0bb2e FD |
1117 | location_tracepoint_comm.probe_name_len = probe_name_len + 1; |
1118 | location_tracepoint_comm.provider_name_len = provider_name_len + 1; | |
1119 | location_tracepoint_comm.binary_path_len = binary_path_len + 1; | |
1ce46cfe | 1120 | |
e368fb43 JG |
1121 | if (payload) { |
1122 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
f4d0bb2e FD |
1123 | &location_tracepoint_comm, |
1124 | sizeof(location_tracepoint_comm)); | |
1ce46cfe JG |
1125 | if (ret) { |
1126 | ret = -LTTNG_ERR_INVALID; | |
1127 | goto end; | |
1128 | } | |
e368fb43 | 1129 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1130 | location_tracepoint->probe_name, |
1131 | location_tracepoint_comm.probe_name_len); | |
1ce46cfe JG |
1132 | if (ret) { |
1133 | ret = -LTTNG_ERR_INVALID; | |
1134 | goto end; | |
1135 | } | |
e368fb43 | 1136 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1137 | location_tracepoint->provider_name, |
1138 | location_tracepoint_comm.provider_name_len); | |
1139 | if (ret) { | |
1140 | ret = -LTTNG_ERR_INVALID; | |
1141 | goto end; | |
1142 | } | |
e368fb43 | 1143 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
f4d0bb2e FD |
1144 | location_tracepoint->binary_path, |
1145 | location_tracepoint_comm.binary_path_len); | |
1ce46cfe JG |
1146 | if (ret) { |
1147 | ret = -LTTNG_ERR_INVALID; | |
1148 | goto end; | |
1149 | } | |
fe489250 | 1150 | ret = lttng_payload_push_fd_handle( |
2cde0510 | 1151 | payload, location_tracepoint->binary_fd_handle); |
e368fb43 JG |
1152 | if (ret) { |
1153 | ret = -LTTNG_ERR_INVALID; | |
1154 | goto end; | |
1155 | } | |
1ce46cfe | 1156 | } |
e368fb43 | 1157 | |
f4d0bb2e FD |
1158 | ret = sizeof(location_tracepoint_comm) + |
1159 | location_tracepoint_comm.probe_name_len + | |
1160 | location_tracepoint_comm.provider_name_len + | |
1161 | location_tracepoint_comm.binary_path_len; | |
1ce46cfe JG |
1162 | end: |
1163 | return ret; | |
1164 | } | |
1165 | ||
1166 | LTTNG_HIDDEN | |
1167 | int lttng_userspace_probe_location_serialize( | |
1168 | const struct lttng_userspace_probe_location *location, | |
e368fb43 | 1169 | struct lttng_payload *payload) |
1ce46cfe JG |
1170 | { |
1171 | int ret, buffer_use = 0; | |
1172 | struct lttng_userspace_probe_location_comm location_generic_comm; | |
1173 | ||
1174 | if (!location) { | |
f04a8200 | 1175 | ERR("Invalid argument(s) passed to '%s'", __FUNCTION__); |
1ce46cfe JG |
1176 | ret = -LTTNG_ERR_INVALID; |
1177 | goto end; | |
1178 | } | |
1179 | ||
56f0bc67 JG |
1180 | memset(&location_generic_comm, 0, sizeof(location_generic_comm)); |
1181 | ||
1ce46cfe | 1182 | location_generic_comm.type = (int8_t) location->type; |
e368fb43 JG |
1183 | if (payload) { |
1184 | ret = lttng_dynamic_buffer_append(&payload->buffer, | |
1185 | &location_generic_comm, | |
1ce46cfe JG |
1186 | sizeof(location_generic_comm)); |
1187 | if (ret) { | |
1188 | goto end; | |
1189 | } | |
1190 | } | |
1191 | buffer_use += sizeof(location_generic_comm); | |
1192 | ||
1193 | switch (lttng_userspace_probe_location_get_type(location)) { | |
1194 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1195 | ret = lttng_userspace_probe_location_function_serialize( | |
e368fb43 | 1196 | location, payload); |
1ce46cfe | 1197 | break; |
f4d0bb2e FD |
1198 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1199 | ret = lttng_userspace_probe_location_tracepoint_serialize( | |
e368fb43 | 1200 | location, payload); |
f4d0bb2e | 1201 | break; |
1ce46cfe JG |
1202 | default: |
1203 | ERR("Unsupported probe location type"); | |
1204 | ret = -LTTNG_ERR_INVALID; | |
1205 | goto end; | |
1206 | } | |
1207 | if (ret < 0) { | |
1208 | goto end; | |
1209 | } | |
1210 | buffer_use += ret; | |
1211 | ||
1212 | ret = lttng_userspace_probe_location_lookup_method_serialize( | |
e368fb43 | 1213 | location->lookup_method, payload); |
1ce46cfe JG |
1214 | if (ret < 0) { |
1215 | goto end; | |
1216 | } | |
1217 | ret += buffer_use; | |
1218 | end: | |
1219 | return ret; | |
1220 | } | |
1221 | ||
1222 | static | |
e368fb43 JG |
1223 | int lttng_userspace_probe_location_function_create_from_payload( |
1224 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1225 | struct lttng_userspace_probe_location **location) |
1226 | { | |
1227 | struct lttng_userspace_probe_location_function_comm *location_function_comm; | |
1228 | const char *function_name_src, *binary_path_src; | |
1229 | char *function_name = NULL, *binary_path = NULL; | |
1230 | int ret = 0; | |
e368fb43 | 1231 | size_t expected_size; |
2cde0510 | 1232 | struct fd_handle *binary_fd_handle = lttng_payload_view_pop_fd_handle(view); |
1ce46cfe | 1233 | |
1ce46cfe JG |
1234 | assert(location); |
1235 | ||
e368fb43 JG |
1236 | if (view->buffer.size < sizeof(*location_function_comm)) { |
1237 | ret = -LTTNG_ERR_INVALID; | |
1238 | goto end; | |
1239 | } | |
1240 | ||
1ce46cfe | 1241 | location_function_comm = |
e368fb43 | 1242 | (typeof(location_function_comm)) view->buffer.data; |
1ce46cfe | 1243 | |
e368fb43 | 1244 | expected_size = sizeof(*location_function_comm) + |
1ce46cfe JG |
1245 | location_function_comm->function_name_len + |
1246 | location_function_comm->binary_path_len; | |
1247 | ||
e368fb43 | 1248 | if (view->buffer.size < expected_size) { |
1ce46cfe JG |
1249 | ret = -LTTNG_ERR_INVALID; |
1250 | goto end; | |
1251 | } | |
1252 | ||
e368fb43 | 1253 | function_name_src = view->buffer.data + sizeof(*location_function_comm); |
1ce46cfe JG |
1254 | binary_path_src = function_name_src + |
1255 | location_function_comm->function_name_len; | |
1256 | ||
48c24aea JG |
1257 | if (!lttng_buffer_view_contains_string(&view->buffer, function_name_src, |
1258 | location_function_comm->function_name_len)) { | |
1ce46cfe JG |
1259 | ret = -LTTNG_ERR_INVALID; |
1260 | goto end; | |
1261 | } | |
48c24aea JG |
1262 | |
1263 | if (!lttng_buffer_view_contains_string(&view->buffer, binary_path_src, | |
1264 | location_function_comm->binary_path_len)) { | |
1ce46cfe JG |
1265 | ret = -LTTNG_ERR_INVALID; |
1266 | goto end; | |
1267 | } | |
1268 | ||
1269 | function_name = lttng_strndup(function_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1270 | if (!function_name) { | |
1271 | PERROR("lttng_strndup"); | |
2aa28610 | 1272 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1273 | goto end; |
1274 | } | |
1275 | ||
1276 | binary_path = lttng_strndup(binary_path_src, LTTNG_PATH_MAX); | |
1277 | if (!binary_path) { | |
1278 | PERROR("lttng_strndup"); | |
2aa28610 | 1279 | ret = -LTTNG_ERR_NOMEM; |
1ce46cfe JG |
1280 | goto end; |
1281 | } | |
1282 | ||
1283 | *location = lttng_userspace_probe_location_function_create_no_check( | |
1284 | binary_path, function_name, NULL, false); | |
1285 | if (!(*location)) { | |
1286 | ret = -LTTNG_ERR_INVALID; | |
1287 | goto end; | |
1288 | } | |
1289 | ||
2cde0510 JG |
1290 | ret = lttng_userspace_probe_location_function_set_binary_fd_handle( |
1291 | *location, binary_fd_handle); | |
e368fb43 | 1292 | if (ret) { |
e368fb43 JG |
1293 | ret = -LTTNG_ERR_INVALID; |
1294 | goto end; | |
1295 | } | |
1296 | ||
1ce46cfe JG |
1297 | ret = (int) expected_size; |
1298 | end: | |
2cde0510 | 1299 | fd_handle_put(binary_fd_handle); |
1ce46cfe JG |
1300 | free(function_name); |
1301 | free(binary_path); | |
1302 | return ret; | |
1303 | } | |
1304 | ||
f4d0bb2e | 1305 | static |
e368fb43 JG |
1306 | int lttng_userspace_probe_location_tracepoint_create_from_payload( |
1307 | struct lttng_payload_view *view, | |
f4d0bb2e FD |
1308 | struct lttng_userspace_probe_location **location) |
1309 | { | |
1310 | struct lttng_userspace_probe_location_tracepoint_comm *location_tracepoint_comm; | |
1311 | const char *probe_name_src, *provider_name_src, *binary_path_src; | |
1312 | char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL; | |
1313 | int ret = 0; | |
e368fb43 | 1314 | size_t expected_size; |
2cde0510 | 1315 | struct fd_handle *binary_fd_handle = lttng_payload_view_pop_fd_handle(view); |
f4d0bb2e | 1316 | |
f4d0bb2e FD |
1317 | assert(location); |
1318 | ||
2cde0510 | 1319 | if (!binary_fd_handle) { |
e368fb43 JG |
1320 | ret = -LTTNG_ERR_INVALID; |
1321 | goto end; | |
1322 | } | |
1323 | ||
1324 | if (view->buffer.size < sizeof(*location_tracepoint_comm)) { | |
1325 | ret = -LTTNG_ERR_INVALID; | |
1326 | goto end; | |
1327 | } | |
1328 | ||
f4d0bb2e | 1329 | location_tracepoint_comm = |
e368fb43 | 1330 | (typeof(location_tracepoint_comm)) view->buffer.data; |
f4d0bb2e | 1331 | |
e368fb43 | 1332 | expected_size = sizeof(*location_tracepoint_comm) + |
f4d0bb2e FD |
1333 | location_tracepoint_comm->probe_name_len + |
1334 | location_tracepoint_comm->provider_name_len + | |
1335 | location_tracepoint_comm->binary_path_len; | |
1336 | ||
e368fb43 | 1337 | if (view->buffer.size < expected_size) { |
f4d0bb2e FD |
1338 | ret = -LTTNG_ERR_INVALID; |
1339 | goto end; | |
1340 | } | |
1341 | ||
e368fb43 | 1342 | probe_name_src = view->buffer.data + sizeof(*location_tracepoint_comm); |
f4d0bb2e FD |
1343 | provider_name_src = probe_name_src + |
1344 | location_tracepoint_comm->probe_name_len; | |
1345 | binary_path_src = provider_name_src + | |
1346 | location_tracepoint_comm->provider_name_len; | |
1347 | ||
48c24aea JG |
1348 | if (!lttng_buffer_view_contains_string(&view->buffer, probe_name_src, |
1349 | location_tracepoint_comm->probe_name_len)) { | |
f4d0bb2e FD |
1350 | ret = -LTTNG_ERR_INVALID; |
1351 | goto end; | |
1352 | } | |
1353 | ||
48c24aea JG |
1354 | if (!lttng_buffer_view_contains_string(&view->buffer, provider_name_src, |
1355 | location_tracepoint_comm->provider_name_len)) { | |
f4d0bb2e FD |
1356 | ret = -LTTNG_ERR_INVALID; |
1357 | goto end; | |
1358 | } | |
1359 | ||
48c24aea JG |
1360 | if (!lttng_buffer_view_contains_string(&view->buffer, binary_path_src, |
1361 | location_tracepoint_comm->binary_path_len)) { | |
f4d0bb2e FD |
1362 | ret = -LTTNG_ERR_INVALID; |
1363 | goto end; | |
1364 | } | |
1365 | ||
1366 | probe_name = lttng_strndup(probe_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1367 | if (!probe_name) { | |
1368 | PERROR("lttng_strndup"); | |
1369 | goto end; | |
1370 | } | |
1371 | provider_name = lttng_strndup(provider_name_src, LTTNG_SYMBOL_NAME_LEN); | |
1372 | if (!provider_name) { | |
1373 | PERROR("lttng_strndup"); | |
1374 | goto end; | |
1375 | } | |
1376 | ||
1377 | binary_path = lttng_strndup(binary_path_src, LTTNG_SYMBOL_NAME_LEN); | |
1378 | if (!binary_path) { | |
1379 | PERROR("lttng_strndup"); | |
1380 | goto end; | |
1381 | } | |
1382 | ||
1383 | *location = lttng_userspace_probe_location_tracepoint_create_no_check( | |
1384 | binary_path, provider_name, probe_name, NULL, false); | |
1385 | if (!(*location)) { | |
1386 | ret = -LTTNG_ERR_INVALID; | |
1387 | goto end; | |
1388 | } | |
1389 | ||
2cde0510 JG |
1390 | ret = lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
1391 | *location, binary_fd_handle); | |
e368fb43 | 1392 | if (ret) { |
e368fb43 JG |
1393 | ret = -LTTNG_ERR_INVALID; |
1394 | goto end; | |
1395 | } | |
1396 | ||
f4d0bb2e FD |
1397 | ret = (int) expected_size; |
1398 | end: | |
2cde0510 | 1399 | fd_handle_put(binary_fd_handle); |
f4d0bb2e FD |
1400 | free(probe_name); |
1401 | free(provider_name); | |
1402 | free(binary_path); | |
1403 | return ret; | |
1404 | } | |
1405 | ||
1ce46cfe | 1406 | static |
e368fb43 JG |
1407 | int lttng_userspace_probe_location_lookup_method_create_from_payload( |
1408 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1409 | struct lttng_userspace_probe_location_lookup_method **lookup_method) |
1410 | { | |
1411 | int ret; | |
1412 | struct lttng_userspace_probe_location_lookup_method_comm *lookup_comm; | |
1413 | enum lttng_userspace_probe_location_lookup_method_type type; | |
1414 | ||
e368fb43 | 1415 | assert(view); |
1ce46cfe JG |
1416 | assert(lookup_method); |
1417 | ||
e368fb43 | 1418 | if (view->buffer.size < sizeof(*lookup_comm)) { |
1ce46cfe JG |
1419 | ret = -LTTNG_ERR_INVALID; |
1420 | goto end; | |
1421 | } | |
1422 | ||
e368fb43 | 1423 | lookup_comm = (typeof(lookup_comm)) view->buffer.data; |
1ce46cfe JG |
1424 | type = (enum lttng_userspace_probe_location_lookup_method_type) |
1425 | lookup_comm->type; | |
1426 | switch (type) { | |
1427 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT: | |
1428 | *lookup_method = NULL; | |
1429 | break; | |
1430 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF: | |
1431 | *lookup_method = | |
1432 | lttng_userspace_probe_location_lookup_method_function_elf_create(); | |
1433 | if (!(*lookup_method)) { | |
1434 | ret = -LTTNG_ERR_INVALID; | |
1435 | goto end; | |
1436 | } | |
1437 | break; | |
f4d0bb2e FD |
1438 | case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT: |
1439 | *lookup_method = | |
1440 | lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create(); | |
1441 | if (!(*lookup_method)) { | |
1442 | ret = -LTTNG_ERR_INVALID; | |
1443 | goto end; | |
1444 | } | |
1445 | break; | |
1ce46cfe JG |
1446 | default: |
1447 | ret = -LTTNG_ERR_INVALID; | |
1448 | goto end; | |
1449 | } | |
1450 | ||
1451 | ret = sizeof(*lookup_comm); | |
1452 | end: | |
1453 | return ret; | |
1454 | } | |
1455 | ||
1456 | LTTNG_HIDDEN | |
e368fb43 JG |
1457 | int lttng_userspace_probe_location_create_from_payload( |
1458 | struct lttng_payload_view *view, | |
1ce46cfe JG |
1459 | struct lttng_userspace_probe_location **location) |
1460 | { | |
1461 | struct lttng_userspace_probe_location_lookup_method *lookup_method; | |
1ce46cfe | 1462 | enum lttng_userspace_probe_location_type type; |
1ce46cfe JG |
1463 | int consumed = 0; |
1464 | int ret; | |
3e6e0df2 JG |
1465 | struct lttng_userspace_probe_location_comm *probe_location_comm; |
1466 | struct lttng_payload_view probe_location_comm_view = | |
1467 | lttng_payload_view_from_view( | |
1468 | view, 0, sizeof(*probe_location_comm)); | |
1ce46cfe | 1469 | |
e368fb43 | 1470 | assert(view); |
1ce46cfe JG |
1471 | assert(location); |
1472 | ||
1473 | lookup_method = NULL; | |
1474 | ||
3e6e0df2 | 1475 | if (!lttng_payload_view_is_valid(&probe_location_comm_view)) { |
1ce46cfe JG |
1476 | ret = -LTTNG_ERR_INVALID; |
1477 | goto end; | |
1478 | } | |
1479 | ||
3e6e0df2 | 1480 | probe_location_comm = (typeof(probe_location_comm)) probe_location_comm_view.buffer.data; |
1ce46cfe JG |
1481 | type = (enum lttng_userspace_probe_location_type) probe_location_comm->type; |
1482 | consumed += sizeof(*probe_location_comm); | |
1483 | ||
1484 | switch (type) { | |
1485 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1486 | { | |
e368fb43 JG |
1487 | struct lttng_payload_view location_view = |
1488 | lttng_payload_view_from_view( | |
1489 | view, consumed, -1); | |
1ce46cfe | 1490 | |
e368fb43 JG |
1491 | ret = lttng_userspace_probe_location_function_create_from_payload( |
1492 | &location_view, location); | |
1ce46cfe JG |
1493 | if (ret < 0) { |
1494 | goto end; | |
1495 | } | |
1496 | break; | |
1497 | } | |
f4d0bb2e FD |
1498 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1499 | { | |
e368fb43 JG |
1500 | struct lttng_payload_view location_view = |
1501 | lttng_payload_view_from_view(view, consumed, -1); | |
f4d0bb2e | 1502 | |
e368fb43 JG |
1503 | ret = lttng_userspace_probe_location_tracepoint_create_from_payload( |
1504 | &location_view, location); | |
f4d0bb2e FD |
1505 | if (ret < 0) { |
1506 | goto end; | |
1507 | } | |
1508 | break; | |
1509 | } | |
1ce46cfe JG |
1510 | default: |
1511 | ret = -LTTNG_ERR_INVALID; | |
1512 | goto end; | |
1513 | } | |
1514 | ||
1515 | consumed += ret; | |
e368fb43 | 1516 | if (view->buffer.size <= consumed) { |
1ce46cfe JG |
1517 | ret = -LTTNG_ERR_INVALID; |
1518 | goto end; | |
1519 | } | |
1520 | ||
e368fb43 JG |
1521 | { |
1522 | struct lttng_payload_view lookup_method_view = | |
1523 | lttng_payload_view_from_view( | |
1524 | view, consumed, -1); | |
1525 | ||
1526 | ret = lttng_userspace_probe_location_lookup_method_create_from_payload( | |
1527 | &lookup_method_view, &lookup_method); | |
1528 | } | |
1ce46cfe JG |
1529 | if (ret < 0) { |
1530 | ret = -LTTNG_ERR_INVALID; | |
1531 | goto end; | |
1532 | } | |
1533 | ||
1534 | assert(lookup_method); | |
1535 | (*location)->lookup_method = lookup_method; | |
1536 | lookup_method = NULL; | |
1537 | ret += consumed; | |
1538 | end: | |
1539 | return ret; | |
1540 | } | |
1541 | ||
fe489250 | 1542 | static |
2cde0510 | 1543 | int lttng_userspace_probe_location_function_set_binary_fd_handle( |
fe489250 JG |
1544 | struct lttng_userspace_probe_location *location, |
1545 | struct fd_handle *binary_fd) | |
1ce46cfe JG |
1546 | { |
1547 | int ret = 0; | |
1548 | struct lttng_userspace_probe_location_function *function_location; | |
1549 | ||
1550 | assert(location); | |
1551 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION); | |
1552 | ||
1553 | function_location = container_of(location, | |
1554 | struct lttng_userspace_probe_location_function, parent); | |
2cde0510 | 1555 | fd_handle_put(function_location->binary_fd_handle); |
fe489250 | 1556 | fd_handle_get(binary_fd); |
2cde0510 | 1557 | function_location->binary_fd_handle = binary_fd; |
1ce46cfe JG |
1558 | return ret; |
1559 | } | |
1560 | ||
fe489250 | 1561 | static |
2cde0510 | 1562 | int lttng_userspace_probe_location_tracepoint_set_binary_fd_handle( |
fe489250 JG |
1563 | struct lttng_userspace_probe_location *location, |
1564 | struct fd_handle *binary_fd) | |
f4d0bb2e FD |
1565 | { |
1566 | int ret = 0; | |
1567 | struct lttng_userspace_probe_location_tracepoint *tracepoint_location; | |
1568 | ||
1569 | assert(location); | |
1570 | assert(location->type == LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT); | |
1571 | ||
1572 | tracepoint_location = container_of(location, | |
1573 | struct lttng_userspace_probe_location_tracepoint, parent); | |
2cde0510 | 1574 | fd_handle_put(tracepoint_location->binary_fd_handle); |
fe489250 | 1575 | fd_handle_get(binary_fd); |
2cde0510 | 1576 | tracepoint_location->binary_fd_handle = binary_fd; |
f4d0bb2e FD |
1577 | return ret; |
1578 | } | |
1579 | ||
1ce46cfe JG |
1580 | static |
1581 | int lttng_userspace_probe_location_function_flatten( | |
1582 | const struct lttng_userspace_probe_location *location, | |
1583 | struct lttng_dynamic_buffer *buffer) | |
1584 | { | |
1585 | struct lttng_userspace_probe_location_lookup_method_elf flat_lookup_method; | |
1586 | struct lttng_userspace_probe_location_function *probe_function; | |
1587 | struct lttng_userspace_probe_location_function flat_probe; | |
1588 | size_t function_name_len, binary_path_len; | |
1589 | size_t padding_needed = 0; | |
1590 | char *flat_probe_start; | |
1591 | int storage_needed = 0; | |
1592 | int ret; | |
1593 | ||
1594 | assert(location); | |
1595 | ||
1596 | if (location->lookup_method && location->lookup_method->type != | |
1597 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF) { | |
1598 | ret = -LTTNG_ERR_INVALID; | |
1599 | goto end; | |
1600 | } | |
1601 | ||
1602 | probe_function = container_of(location, | |
1603 | struct lttng_userspace_probe_location_function, | |
1604 | parent); | |
1605 | assert(probe_function->function_name); | |
1606 | assert(probe_function->binary_path); | |
1607 | ||
1608 | storage_needed += | |
1609 | sizeof(struct lttng_userspace_probe_location_function); | |
1610 | function_name_len = strlen(probe_function->function_name) + 1; | |
1611 | binary_path_len = strlen(probe_function->binary_path) + 1; | |
1612 | storage_needed += function_name_len + binary_path_len; | |
1613 | ||
1614 | /* | |
1615 | * The lookup method is aligned to 64-bit within the buffer. | |
1616 | * This is needed even if there is no lookup method since | |
1617 | * the next structure in the buffer probably needs to be | |
1618 | * aligned too (depending on the arch). | |
1619 | */ | |
1620 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1621 | storage_needed += padding_needed; | |
1622 | ||
1623 | if (location->lookup_method) { | |
1624 | /* NOTE: elf look-up method is assumed here. */ | |
1625 | storage_needed += sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1626 | } | |
1627 | ||
1628 | if (!buffer) { | |
1629 | ret = storage_needed; | |
1630 | goto end; | |
1631 | } | |
1632 | ||
1633 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1634 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1635 | buffer->size + storage_needed); | |
1636 | if (ret) { | |
1637 | goto end; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1642 | ||
1643 | flat_probe_start = buffer->data + buffer->size; | |
1644 | flat_probe.parent.type = location->type; | |
1645 | /* | |
1646 | * The lookup method, if present, is the last element in the flat | |
1647 | * representation of the probe. | |
1648 | */ | |
1649 | if (location->lookup_method) { | |
1650 | flat_probe.parent.lookup_method = | |
1651 | (struct lttng_userspace_probe_location_lookup_method *) | |
1652 | (flat_probe_start + sizeof(flat_probe) + | |
1653 | function_name_len + binary_path_len + padding_needed); | |
1654 | } else { | |
1655 | flat_probe.parent.lookup_method = NULL; | |
1656 | } | |
1657 | ||
1658 | flat_probe.function_name = flat_probe_start + sizeof(flat_probe); | |
1659 | flat_probe.binary_path = flat_probe.function_name + function_name_len; | |
2cde0510 | 1660 | flat_probe.binary_fd_handle = NULL; |
1ce46cfe JG |
1661 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, |
1662 | sizeof(flat_probe)); | |
1663 | if (ret) { | |
1664 | goto end; | |
1665 | } | |
1666 | ||
1667 | ret = lttng_dynamic_buffer_append(buffer, | |
1668 | probe_function->function_name, function_name_len); | |
1669 | if (ret) { | |
1670 | goto end; | |
1671 | } | |
1672 | ret = lttng_dynamic_buffer_append(buffer, | |
1673 | probe_function->binary_path, binary_path_len); | |
1674 | if (ret) { | |
1675 | goto end; | |
1676 | } | |
1677 | ||
1678 | /* Insert padding before the lookup method. */ | |
1679 | ret = lttng_dynamic_buffer_set_size(buffer, | |
1680 | buffer->size + padding_needed); | |
1681 | if (ret) { | |
1682 | goto end; | |
1683 | } | |
1684 | ||
1685 | if (!location->lookup_method) { | |
1686 | /* Not an error, the default method is used. */ | |
1687 | ret = storage_needed; | |
1688 | goto end; | |
1689 | } | |
1690 | ||
1691 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1692 | flat_lookup_method.parent.type = | |
1693 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF; | |
1694 | ret = lttng_dynamic_buffer_append(buffer, | |
1695 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1696 | if (ret) { | |
1697 | goto end; | |
1698 | } | |
1699 | ret = storage_needed; | |
1700 | end: | |
1701 | return ret; | |
1702 | } | |
1703 | ||
f4d0bb2e FD |
1704 | static |
1705 | int lttng_userspace_probe_location_tracepoint_flatten( | |
1706 | const struct lttng_userspace_probe_location *location, | |
1707 | struct lttng_dynamic_buffer *buffer) | |
1708 | { | |
1709 | struct lttng_userspace_probe_location_lookup_method_sdt flat_lookup_method; | |
1710 | struct lttng_userspace_probe_location_tracepoint *probe_tracepoint; | |
1711 | struct lttng_userspace_probe_location_tracepoint flat_probe; | |
1712 | size_t probe_name_len, provider_name_len, binary_path_len; | |
1713 | size_t padding_needed = 0; | |
1714 | int storage_needed = 0; | |
1715 | char *flat_probe_start; | |
1716 | int ret = 0; | |
1717 | ||
1718 | assert(location); | |
1719 | ||
1720 | /* Only SDT tracepoints are supported at the moment */ | |
1721 | if (location->lookup_method && location->lookup_method->type != | |
1722 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT) { | |
1723 | ret = -LTTNG_ERR_INVALID; | |
1724 | goto end; | |
1725 | } | |
1726 | probe_tracepoint = container_of(location, | |
1727 | struct lttng_userspace_probe_location_tracepoint, | |
1728 | parent); | |
1729 | assert(probe_tracepoint->probe_name); | |
1730 | assert(probe_tracepoint->provider_name); | |
1731 | assert(probe_tracepoint->binary_path); | |
1732 | ||
1733 | /* Compute the storage space needed to flatten the probe location */ | |
1734 | storage_needed += sizeof(struct lttng_userspace_probe_location_tracepoint); | |
1735 | ||
1736 | probe_name_len = strlen(probe_tracepoint->probe_name) + 1; | |
1737 | provider_name_len = strlen(probe_tracepoint->provider_name) + 1; | |
1738 | binary_path_len = strlen(probe_tracepoint->binary_path) + 1; | |
1739 | ||
1740 | storage_needed += probe_name_len + provider_name_len + binary_path_len; | |
1741 | ||
1742 | /* | |
1743 | * The lookup method is aligned to 64-bit within the buffer. | |
1744 | * This is needed even if there is no lookup method since | |
1745 | * the next structure in the buffer probably needs to be | |
1746 | * aligned too (depending on the arch). | |
1747 | */ | |
1748 | padding_needed = ALIGN_TO(storage_needed, sizeof(uint64_t)) - storage_needed; | |
1749 | storage_needed += padding_needed; | |
1750 | ||
1751 | if (location->lookup_method) { | |
1752 | /* NOTE: elf look-up method is assumed here. */ | |
1753 | storage_needed += | |
1754 | sizeof(struct lttng_userspace_probe_location_lookup_method_elf); | |
1755 | } | |
1756 | ||
1757 | /* | |
1758 | * If the caller set buffer to NULL, return the size of the needed buffer. | |
1759 | */ | |
1760 | if (!buffer) { | |
1761 | ret = storage_needed; | |
1762 | goto end; | |
1763 | } | |
1764 | ||
1765 | if (lttng_dynamic_buffer_get_capacity_left(buffer) < storage_needed) { | |
1766 | ret = lttng_dynamic_buffer_set_capacity(buffer, | |
1767 | buffer->size + storage_needed); | |
1768 | if (ret) { | |
1769 | goto end; | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | memset(&flat_probe, 0, sizeof(flat_probe)); | |
1774 | ||
1775 | flat_probe_start = buffer->data + buffer->size; | |
1776 | flat_probe.parent.type = location->type; | |
1777 | ||
1778 | /* | |
1779 | * The lookup method, if present, is the last element in the flat | |
1780 | * representation of the probe. | |
1781 | */ | |
1782 | if (location->lookup_method) { | |
1783 | flat_probe.parent.lookup_method = | |
1784 | (struct lttng_userspace_probe_location_lookup_method *) | |
1785 | (flat_probe_start + sizeof(flat_probe) + | |
1786 | probe_name_len + provider_name_len + | |
1787 | binary_path_len + padding_needed); | |
1788 | } else { | |
1789 | flat_probe.parent.lookup_method = NULL; | |
1790 | } | |
1791 | ||
1792 | flat_probe.probe_name = flat_probe_start + sizeof(flat_probe); | |
1793 | flat_probe.provider_name = flat_probe.probe_name + probe_name_len; | |
1794 | flat_probe.binary_path = flat_probe.provider_name + provider_name_len; | |
2cde0510 | 1795 | flat_probe.binary_fd_handle = NULL; |
f4d0bb2e FD |
1796 | ret = lttng_dynamic_buffer_append(buffer, &flat_probe, sizeof(flat_probe)); |
1797 | if (ret) { | |
1798 | goto end; | |
1799 | } | |
1800 | ||
1801 | /* Append all the fields to the buffer */ | |
1802 | ret = lttng_dynamic_buffer_append(buffer, | |
1803 | probe_tracepoint->probe_name, probe_name_len); | |
1804 | if (ret) { | |
1805 | goto end; | |
1806 | } | |
1807 | ret = lttng_dynamic_buffer_append(buffer, | |
1808 | probe_tracepoint->provider_name, provider_name_len); | |
1809 | if (ret) { | |
1810 | goto end; | |
1811 | } | |
1812 | ret = lttng_dynamic_buffer_append(buffer, | |
1813 | probe_tracepoint->binary_path, binary_path_len); | |
1814 | if (ret) { | |
1815 | goto end; | |
1816 | } | |
1817 | ||
1818 | /* Insert padding before the lookup method. */ | |
1819 | ret = lttng_dynamic_buffer_set_size(buffer, buffer->size + padding_needed); | |
1820 | if (ret) { | |
1821 | goto end; | |
1822 | } | |
1823 | ||
1824 | if (!location->lookup_method) { | |
1825 | /* Not an error, the default method is used. */ | |
1826 | ret = storage_needed; | |
1827 | goto end; | |
1828 | } | |
1829 | ||
1830 | memset(&flat_lookup_method, 0, sizeof(flat_lookup_method)); | |
1831 | ||
1832 | flat_lookup_method.parent.type = | |
1833 | LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT; | |
1834 | ret = lttng_dynamic_buffer_append(buffer, | |
1835 | &flat_lookup_method, sizeof(flat_lookup_method)); | |
1836 | if (ret) { | |
1837 | goto end; | |
1838 | } | |
1839 | ret = storage_needed; | |
1840 | end: | |
1841 | return ret; | |
1842 | } | |
1843 | ||
1ce46cfe JG |
1844 | LTTNG_HIDDEN |
1845 | int lttng_userspace_probe_location_flatten( | |
1846 | const struct lttng_userspace_probe_location *location, | |
1847 | struct lttng_dynamic_buffer *buffer) | |
1848 | { | |
1849 | int ret; | |
1850 | if (!location) { | |
1851 | ret = -LTTNG_ERR_INVALID; | |
1852 | goto end; | |
1853 | } | |
1854 | ||
1855 | /* Only types currently supported. */ | |
1856 | switch (location->type) { | |
1857 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1858 | ret = lttng_userspace_probe_location_function_flatten(location, buffer); | |
1859 | break; | |
f4d0bb2e FD |
1860 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1861 | ret = lttng_userspace_probe_location_tracepoint_flatten(location, buffer); | |
1862 | break; | |
1ce46cfe JG |
1863 | default: |
1864 | ret = -LTTNG_ERR_INVALID; | |
1865 | goto end; | |
1866 | } | |
1867 | ||
1868 | end: | |
1869 | return ret; | |
1870 | } | |
394357fe FD |
1871 | |
1872 | LTTNG_HIDDEN | |
1873 | struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy( | |
1874 | const struct lttng_userspace_probe_location *location) | |
1875 | { | |
1876 | struct lttng_userspace_probe_location *new_location = NULL; | |
1877 | enum lttng_userspace_probe_location_type type; | |
1878 | ||
1879 | if (!location) { | |
1880 | goto err; | |
1881 | } | |
1882 | ||
1883 | type = lttng_userspace_probe_location_get_type(location); | |
1884 | switch (type) { | |
1885 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION: | |
1886 | new_location = | |
1887 | lttng_userspace_probe_location_function_copy(location); | |
1888 | if (!new_location) { | |
1889 | goto err; | |
1890 | } | |
1891 | break; | |
f4d0bb2e FD |
1892 | case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT: |
1893 | new_location = | |
1894 | lttng_userspace_probe_location_tracepoint_copy(location); | |
1895 | if (!new_location) { | |
1896 | goto err; | |
1897 | } | |
1898 | break; | |
394357fe FD |
1899 | default: |
1900 | new_location = NULL; | |
1901 | goto err; | |
1902 | } | |
1903 | err: | |
1904 | return new_location; | |
1905 | } | |
dfcfa983 JR |
1906 | |
1907 | LTTNG_HIDDEN | |
1908 | bool lttng_userspace_probe_location_lookup_method_is_equal( | |
1909 | const struct lttng_userspace_probe_location_lookup_method *a, | |
1910 | const struct lttng_userspace_probe_location_lookup_method *b) | |
1911 | { | |
1912 | bool is_equal = false; | |
1913 | ||
1914 | if (!a || !b) { | |
1915 | goto end; | |
1916 | } | |
1917 | ||
1918 | if (a == b) { | |
1919 | is_equal = true; | |
1920 | goto end; | |
1921 | } | |
1922 | ||
1923 | if (a->type != b->type) { | |
1924 | goto end; | |
1925 | } | |
1926 | ||
1927 | is_equal = true; | |
1928 | end: | |
1929 | return is_equal; | |
1930 | } | |
1931 | ||
1932 | LTTNG_HIDDEN | |
1933 | bool lttng_userspace_probe_location_is_equal( | |
1934 | const struct lttng_userspace_probe_location *a, | |
1935 | const struct lttng_userspace_probe_location *b) | |
1936 | { | |
1937 | bool is_equal = false; | |
1938 | ||
1939 | if (!a || !b) { | |
1940 | goto end; | |
1941 | } | |
1942 | ||
1943 | if (a == b) { | |
1944 | is_equal = true; | |
1945 | goto end; | |
1946 | } | |
1947 | ||
1948 | if (!lttng_userspace_probe_location_lookup_method_is_equal( | |
1949 | a->lookup_method, b->lookup_method)) { | |
1950 | goto end; | |
1951 | } | |
1952 | ||
1953 | if (a->type != b->type) { | |
1954 | goto end; | |
1955 | } | |
1956 | ||
1957 | is_equal = a->equal ? a->equal(a, b) : true; | |
1958 | end: | |
1959 | return is_equal; | |
1960 | } | |
959e3c66 JR |
1961 | |
1962 | LTTNG_HIDDEN | |
1963 | unsigned long lttng_userspace_probe_location_hash( | |
1964 | const struct lttng_userspace_probe_location *location) | |
1965 | { | |
1966 | return location->hash(location); | |
1967 | } |