Commit | Line | Data |
---|---|---|
bda6ee4a | 1 | #include <asm/bug.h> |
c6580451 JO |
2 | #include <sys/time.h> |
3 | #include <sys/resource.h> | |
cdd059d7 JO |
4 | #include "symbol.h" |
5 | #include "dso.h" | |
69d2591a | 6 | #include "machine.h" |
cdd059d7 JO |
7 | #include "util.h" |
8 | #include "debug.h" | |
9 | ||
10 | char dso__symtab_origin(const struct dso *dso) | |
11 | { | |
12 | static const char origin[] = { | |
9cd00941 RRD |
13 | [DSO_BINARY_TYPE__KALLSYMS] = 'k', |
14 | [DSO_BINARY_TYPE__VMLINUX] = 'v', | |
15 | [DSO_BINARY_TYPE__JAVA_JIT] = 'j', | |
16 | [DSO_BINARY_TYPE__DEBUGLINK] = 'l', | |
17 | [DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B', | |
18 | [DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f', | |
19 | [DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u', | |
20 | [DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO] = 'o', | |
21 | [DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b', | |
22 | [DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd', | |
23 | [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K', | |
24 | [DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g', | |
25 | [DSO_BINARY_TYPE__GUEST_KMODULE] = 'G', | |
26 | [DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V', | |
cdd059d7 JO |
27 | }; |
28 | ||
29 | if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND) | |
30 | return '!'; | |
31 | return origin[dso->symtab_type]; | |
32 | } | |
33 | ||
ee4e9625 ACM |
34 | int dso__read_binary_type_filename(const struct dso *dso, |
35 | enum dso_binary_type type, | |
36 | char *root_dir, char *filename, size_t size) | |
cdd059d7 JO |
37 | { |
38 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; | |
39 | int ret = 0; | |
972f393b | 40 | size_t len; |
cdd059d7 JO |
41 | |
42 | switch (type) { | |
43 | case DSO_BINARY_TYPE__DEBUGLINK: { | |
44 | char *debuglink; | |
45 | ||
7d2a5122 ACM |
46 | strncpy(filename, dso->long_name, size); |
47 | debuglink = filename + dso->long_name_len; | |
48 | while (debuglink != filename && *debuglink != '/') | |
cdd059d7 JO |
49 | debuglink--; |
50 | if (*debuglink == '/') | |
51 | debuglink++; | |
0d3dc5e8 SE |
52 | ret = filename__read_debuglink(dso->long_name, debuglink, |
53 | size - (debuglink - filename)); | |
cdd059d7 JO |
54 | } |
55 | break; | |
56 | case DSO_BINARY_TYPE__BUILD_ID_CACHE: | |
57 | /* skip the locally configured cache if a symfs is given */ | |
58 | if (symbol_conf.symfs[0] || | |
7d2a5122 | 59 | (dso__build_id_filename(dso, filename, size) == NULL)) |
cdd059d7 JO |
60 | ret = -1; |
61 | break; | |
62 | ||
63 | case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: | |
972f393b ACM |
64 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); |
65 | snprintf(filename + len, size - len, "%s.debug", dso->long_name); | |
cdd059d7 JO |
66 | break; |
67 | ||
68 | case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: | |
972f393b ACM |
69 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); |
70 | snprintf(filename + len, size - len, "%s", dso->long_name); | |
cdd059d7 JO |
71 | break; |
72 | ||
9cd00941 RRD |
73 | case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: |
74 | { | |
bf4414ae | 75 | const char *last_slash; |
9cd00941 RRD |
76 | size_t dir_size; |
77 | ||
78 | last_slash = dso->long_name + dso->long_name_len; | |
79 | while (last_slash != dso->long_name && *last_slash != '/') | |
80 | last_slash--; | |
81 | ||
972f393b | 82 | len = __symbol__join_symfs(filename, size, ""); |
9cd00941 RRD |
83 | dir_size = last_slash - dso->long_name + 2; |
84 | if (dir_size > (size - len)) { | |
85 | ret = -1; | |
86 | break; | |
87 | } | |
7d2a5122 ACM |
88 | len += scnprintf(filename + len, dir_size, "%s", dso->long_name); |
89 | len += scnprintf(filename + len , size - len, ".debug%s", | |
9cd00941 RRD |
90 | last_slash); |
91 | break; | |
92 | } | |
93 | ||
cdd059d7 JO |
94 | case DSO_BINARY_TYPE__BUILDID_DEBUGINFO: |
95 | if (!dso->has_build_id) { | |
96 | ret = -1; | |
97 | break; | |
98 | } | |
99 | ||
100 | build_id__sprintf(dso->build_id, | |
101 | sizeof(dso->build_id), | |
102 | build_id_hex); | |
972f393b ACM |
103 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug/.build-id/"); |
104 | snprintf(filename + len, size - len, "%.2s/%s.debug", | |
105 | build_id_hex, build_id_hex + 2); | |
cdd059d7 JO |
106 | break; |
107 | ||
39b12f78 AH |
108 | case DSO_BINARY_TYPE__VMLINUX: |
109 | case DSO_BINARY_TYPE__GUEST_VMLINUX: | |
cdd059d7 | 110 | case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: |
972f393b | 111 | __symbol__join_symfs(filename, size, dso->long_name); |
cdd059d7 JO |
112 | break; |
113 | ||
114 | case DSO_BINARY_TYPE__GUEST_KMODULE: | |
972f393b ACM |
115 | path__join3(filename, size, symbol_conf.symfs, |
116 | root_dir, dso->long_name); | |
cdd059d7 JO |
117 | break; |
118 | ||
119 | case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: | |
972f393b | 120 | __symbol__join_symfs(filename, size, dso->long_name); |
cdd059d7 JO |
121 | break; |
122 | ||
8e0cf965 AH |
123 | case DSO_BINARY_TYPE__KCORE: |
124 | case DSO_BINARY_TYPE__GUEST_KCORE: | |
7d2a5122 | 125 | snprintf(filename, size, "%s", dso->long_name); |
8e0cf965 AH |
126 | break; |
127 | ||
cdd059d7 JO |
128 | default: |
129 | case DSO_BINARY_TYPE__KALLSYMS: | |
cdd059d7 | 130 | case DSO_BINARY_TYPE__GUEST_KALLSYMS: |
cdd059d7 JO |
131 | case DSO_BINARY_TYPE__JAVA_JIT: |
132 | case DSO_BINARY_TYPE__NOT_FOUND: | |
133 | ret = -1; | |
134 | break; | |
135 | } | |
136 | ||
137 | return ret; | |
138 | } | |
139 | ||
eba5102d | 140 | /* |
bda6ee4a | 141 | * Global list of open DSOs and the counter. |
eba5102d JO |
142 | */ |
143 | static LIST_HEAD(dso__data_open); | |
bda6ee4a | 144 | static long dso__data_open_cnt; |
eba5102d JO |
145 | |
146 | static void dso__list_add(struct dso *dso) | |
147 | { | |
148 | list_add_tail(&dso->data.open_entry, &dso__data_open); | |
bda6ee4a | 149 | dso__data_open_cnt++; |
eba5102d JO |
150 | } |
151 | ||
152 | static void dso__list_del(struct dso *dso) | |
153 | { | |
154 | list_del(&dso->data.open_entry); | |
bda6ee4a JO |
155 | WARN_ONCE(dso__data_open_cnt <= 0, |
156 | "DSO data fd counter out of bounds."); | |
157 | dso__data_open_cnt--; | |
eba5102d JO |
158 | } |
159 | ||
a08cae03 JO |
160 | static void close_first_dso(void); |
161 | ||
162 | static int do_open(char *name) | |
163 | { | |
164 | int fd; | |
165 | ||
166 | do { | |
167 | fd = open(name, O_RDONLY); | |
168 | if (fd >= 0) | |
169 | return fd; | |
170 | ||
171 | pr_debug("dso open failed, mmap: %s\n", strerror(errno)); | |
172 | if (!dso__data_open_cnt || errno != EMFILE) | |
173 | break; | |
174 | ||
175 | close_first_dso(); | |
176 | } while (1); | |
177 | ||
178 | return -1; | |
179 | } | |
180 | ||
eba5102d | 181 | static int __open_dso(struct dso *dso, struct machine *machine) |
cdd059d7 | 182 | { |
cdd059d7 | 183 | int fd; |
ee4e9625 ACM |
184 | char *root_dir = (char *)""; |
185 | char *name = malloc(PATH_MAX); | |
cdd059d7 | 186 | |
cdd059d7 JO |
187 | if (!name) |
188 | return -ENOMEM; | |
189 | ||
190 | if (machine) | |
191 | root_dir = machine->root_dir; | |
192 | ||
5f70619d | 193 | if (dso__read_binary_type_filename(dso, dso->binary_type, |
ee4e9625 | 194 | root_dir, name, PATH_MAX)) { |
cdd059d7 JO |
195 | free(name); |
196 | return -EINVAL; | |
197 | } | |
198 | ||
a08cae03 | 199 | fd = do_open(name); |
cdd059d7 JO |
200 | free(name); |
201 | return fd; | |
202 | } | |
203 | ||
c6580451 JO |
204 | static void check_data_close(void); |
205 | ||
c1f9aa0a JO |
206 | /** |
207 | * dso_close - Open DSO data file | |
208 | * @dso: dso object | |
209 | * | |
210 | * Open @dso's data file descriptor and updates | |
211 | * list/count of open DSO objects. | |
212 | */ | |
eba5102d JO |
213 | static int open_dso(struct dso *dso, struct machine *machine) |
214 | { | |
215 | int fd = __open_dso(dso, machine); | |
216 | ||
a6f6ae99 | 217 | if (fd >= 0) { |
eba5102d | 218 | dso__list_add(dso); |
c6580451 JO |
219 | /* |
220 | * Check if we crossed the allowed number | |
221 | * of opened DSOs and close one if needed. | |
222 | */ | |
223 | check_data_close(); | |
224 | } | |
eba5102d JO |
225 | |
226 | return fd; | |
227 | } | |
228 | ||
229 | static void close_data_fd(struct dso *dso) | |
53fa8eaa JO |
230 | { |
231 | if (dso->data.fd >= 0) { | |
232 | close(dso->data.fd); | |
233 | dso->data.fd = -1; | |
c3fbd2a6 | 234 | dso->data.file_size = 0; |
eba5102d | 235 | dso__list_del(dso); |
53fa8eaa JO |
236 | } |
237 | } | |
238 | ||
c1f9aa0a JO |
239 | /** |
240 | * dso_close - Close DSO data file | |
241 | * @dso: dso object | |
242 | * | |
243 | * Close @dso's data file descriptor and updates | |
244 | * list/count of open DSO objects. | |
245 | */ | |
eba5102d JO |
246 | static void close_dso(struct dso *dso) |
247 | { | |
248 | close_data_fd(dso); | |
249 | } | |
250 | ||
c6580451 JO |
251 | static void close_first_dso(void) |
252 | { | |
253 | struct dso *dso; | |
254 | ||
255 | dso = list_first_entry(&dso__data_open, struct dso, data.open_entry); | |
256 | close_dso(dso); | |
257 | } | |
258 | ||
259 | static rlim_t get_fd_limit(void) | |
260 | { | |
261 | struct rlimit l; | |
262 | rlim_t limit = 0; | |
263 | ||
264 | /* Allow half of the current open fd limit. */ | |
265 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
266 | if (l.rlim_cur == RLIM_INFINITY) | |
267 | limit = l.rlim_cur; | |
268 | else | |
269 | limit = l.rlim_cur / 2; | |
270 | } else { | |
271 | pr_err("failed to get fd limit\n"); | |
272 | limit = 1; | |
273 | } | |
274 | ||
275 | return limit; | |
276 | } | |
277 | ||
278 | static bool may_cache_fd(void) | |
279 | { | |
280 | static rlim_t limit; | |
281 | ||
282 | if (!limit) | |
283 | limit = get_fd_limit(); | |
284 | ||
285 | if (limit == RLIM_INFINITY) | |
286 | return true; | |
287 | ||
288 | return limit > (rlim_t) dso__data_open_cnt; | |
289 | } | |
290 | ||
c1f9aa0a JO |
291 | /* |
292 | * Check and close LRU dso if we crossed allowed limit | |
293 | * for opened dso file descriptors. The limit is half | |
294 | * of the RLIMIT_NOFILE files opened. | |
295 | */ | |
c6580451 JO |
296 | static void check_data_close(void) |
297 | { | |
298 | bool cache_fd = may_cache_fd(); | |
299 | ||
300 | if (!cache_fd) | |
301 | close_first_dso(); | |
302 | } | |
303 | ||
c1f9aa0a JO |
304 | /** |
305 | * dso__data_close - Close DSO data file | |
306 | * @dso: dso object | |
307 | * | |
308 | * External interface to close @dso's data file descriptor. | |
309 | */ | |
eba5102d JO |
310 | void dso__data_close(struct dso *dso) |
311 | { | |
312 | close_dso(dso); | |
313 | } | |
314 | ||
c1f9aa0a JO |
315 | /** |
316 | * dso__data_fd - Get dso's data file descriptor | |
317 | * @dso: dso object | |
318 | * @machine: machine object | |
319 | * | |
320 | * External interface to find dso's file, open it and | |
321 | * returns file descriptor. | |
322 | */ | |
cdd059d7 JO |
323 | int dso__data_fd(struct dso *dso, struct machine *machine) |
324 | { | |
631d34b5 | 325 | enum dso_binary_type binary_type_data[] = { |
cdd059d7 JO |
326 | DSO_BINARY_TYPE__BUILD_ID_CACHE, |
327 | DSO_BINARY_TYPE__SYSTEM_PATH_DSO, | |
328 | DSO_BINARY_TYPE__NOT_FOUND, | |
329 | }; | |
330 | int i = 0; | |
331 | ||
c27697d6 AH |
332 | if (dso->data.status == DSO_DATA_STATUS_ERROR) |
333 | return -1; | |
334 | ||
53fa8eaa | 335 | if (dso->data.fd >= 0) |
c27697d6 | 336 | goto out; |
53fa8eaa JO |
337 | |
338 | if (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND) { | |
339 | dso->data.fd = open_dso(dso, machine); | |
c27697d6 | 340 | goto out; |
53fa8eaa | 341 | } |
cdd059d7 JO |
342 | |
343 | do { | |
5f70619d | 344 | dso->binary_type = binary_type_data[i++]; |
cdd059d7 | 345 | |
c27697d6 AH |
346 | dso->data.fd = open_dso(dso, machine); |
347 | if (dso->data.fd >= 0) | |
348 | goto out; | |
cdd059d7 | 349 | |
5f70619d | 350 | } while (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND); |
c27697d6 AH |
351 | out: |
352 | if (dso->data.fd >= 0) | |
353 | dso->data.status = DSO_DATA_STATUS_OK; | |
354 | else | |
355 | dso->data.status = DSO_DATA_STATUS_ERROR; | |
cdd059d7 | 356 | |
c27697d6 | 357 | return dso->data.fd; |
cdd059d7 JO |
358 | } |
359 | ||
288be943 AH |
360 | bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by) |
361 | { | |
362 | u32 flag = 1 << by; | |
363 | ||
364 | if (dso->data.status_seen & flag) | |
365 | return true; | |
366 | ||
367 | dso->data.status_seen |= flag; | |
368 | ||
369 | return false; | |
370 | } | |
371 | ||
cdd059d7 JO |
372 | static void |
373 | dso_cache__free(struct rb_root *root) | |
374 | { | |
375 | struct rb_node *next = rb_first(root); | |
376 | ||
377 | while (next) { | |
378 | struct dso_cache *cache; | |
379 | ||
380 | cache = rb_entry(next, struct dso_cache, rb_node); | |
381 | next = rb_next(&cache->rb_node); | |
382 | rb_erase(&cache->rb_node, root); | |
383 | free(cache); | |
384 | } | |
385 | } | |
386 | ||
3344996e | 387 | static struct dso_cache *dso_cache__find(const struct rb_root *root, u64 offset) |
cdd059d7 | 388 | { |
3344996e ACM |
389 | struct rb_node * const *p = &root->rb_node; |
390 | const struct rb_node *parent = NULL; | |
cdd059d7 JO |
391 | struct dso_cache *cache; |
392 | ||
393 | while (*p != NULL) { | |
394 | u64 end; | |
395 | ||
396 | parent = *p; | |
397 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
398 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
399 | ||
400 | if (offset < cache->offset) | |
401 | p = &(*p)->rb_left; | |
402 | else if (offset >= end) | |
403 | p = &(*p)->rb_right; | |
404 | else | |
405 | return cache; | |
406 | } | |
407 | return NULL; | |
408 | } | |
409 | ||
410 | static void | |
411 | dso_cache__insert(struct rb_root *root, struct dso_cache *new) | |
412 | { | |
413 | struct rb_node **p = &root->rb_node; | |
414 | struct rb_node *parent = NULL; | |
415 | struct dso_cache *cache; | |
416 | u64 offset = new->offset; | |
417 | ||
418 | while (*p != NULL) { | |
419 | u64 end; | |
420 | ||
421 | parent = *p; | |
422 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
423 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
424 | ||
425 | if (offset < cache->offset) | |
426 | p = &(*p)->rb_left; | |
427 | else if (offset >= end) | |
428 | p = &(*p)->rb_right; | |
429 | } | |
430 | ||
431 | rb_link_node(&new->rb_node, parent, p); | |
432 | rb_insert_color(&new->rb_node, root); | |
433 | } | |
434 | ||
435 | static ssize_t | |
436 | dso_cache__memcpy(struct dso_cache *cache, u64 offset, | |
437 | u8 *data, u64 size) | |
438 | { | |
439 | u64 cache_offset = offset - cache->offset; | |
440 | u64 cache_size = min(cache->size - cache_offset, size); | |
441 | ||
442 | memcpy(data, cache->data + cache_offset, cache_size); | |
443 | return cache_size; | |
444 | } | |
445 | ||
446 | static ssize_t | |
c3fbd2a6 | 447 | dso_cache__read(struct dso *dso, u64 offset, u8 *data, ssize_t size) |
cdd059d7 JO |
448 | { |
449 | struct dso_cache *cache; | |
450 | ssize_t ret; | |
cdd059d7 JO |
451 | |
452 | do { | |
453 | u64 cache_offset; | |
454 | ||
455 | ret = -ENOMEM; | |
456 | ||
457 | cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE); | |
458 | if (!cache) | |
459 | break; | |
460 | ||
461 | cache_offset = offset & DSO__DATA_CACHE_MASK; | |
462 | ret = -EINVAL; | |
463 | ||
c3fbd2a6 | 464 | if (-1 == lseek(dso->data.fd, cache_offset, SEEK_SET)) |
cdd059d7 JO |
465 | break; |
466 | ||
c3fbd2a6 | 467 | ret = read(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE); |
cdd059d7 JO |
468 | if (ret <= 0) |
469 | break; | |
470 | ||
471 | cache->offset = cache_offset; | |
472 | cache->size = ret; | |
ca40e2af | 473 | dso_cache__insert(&dso->data.cache, cache); |
cdd059d7 JO |
474 | |
475 | ret = dso_cache__memcpy(cache, offset, data, size); | |
476 | ||
477 | } while (0); | |
478 | ||
479 | if (ret <= 0) | |
480 | free(cache); | |
481 | ||
cdd059d7 JO |
482 | return ret; |
483 | } | |
484 | ||
c3fbd2a6 JO |
485 | static ssize_t dso_cache_read(struct dso *dso, u64 offset, |
486 | u8 *data, ssize_t size) | |
cdd059d7 JO |
487 | { |
488 | struct dso_cache *cache; | |
489 | ||
ca40e2af | 490 | cache = dso_cache__find(&dso->data.cache, offset); |
cdd059d7 JO |
491 | if (cache) |
492 | return dso_cache__memcpy(cache, offset, data, size); | |
493 | else | |
c3fbd2a6 | 494 | return dso_cache__read(dso, offset, data, size); |
cdd059d7 JO |
495 | } |
496 | ||
c1f9aa0a JO |
497 | /* |
498 | * Reads and caches dso data DSO__DATA_CACHE_SIZE size chunks | |
499 | * in the rb_tree. Any read to already cached data is served | |
500 | * by cached data. | |
501 | */ | |
c3fbd2a6 | 502 | static ssize_t cached_read(struct dso *dso, u64 offset, u8 *data, ssize_t size) |
cdd059d7 JO |
503 | { |
504 | ssize_t r = 0; | |
505 | u8 *p = data; | |
506 | ||
507 | do { | |
508 | ssize_t ret; | |
509 | ||
c3fbd2a6 | 510 | ret = dso_cache_read(dso, offset, p, size); |
cdd059d7 JO |
511 | if (ret < 0) |
512 | return ret; | |
513 | ||
514 | /* Reached EOF, return what we have. */ | |
515 | if (!ret) | |
516 | break; | |
517 | ||
518 | BUG_ON(ret > size); | |
519 | ||
520 | r += ret; | |
521 | p += ret; | |
522 | offset += ret; | |
523 | size -= ret; | |
524 | ||
525 | } while (size); | |
526 | ||
527 | return r; | |
528 | } | |
529 | ||
c3fbd2a6 JO |
530 | static int data_file_size(struct dso *dso) |
531 | { | |
532 | struct stat st; | |
533 | ||
534 | if (!dso->data.file_size) { | |
535 | if (fstat(dso->data.fd, &st)) { | |
536 | pr_err("dso mmap failed, fstat: %s\n", strerror(errno)); | |
537 | return -1; | |
538 | } | |
539 | dso->data.file_size = st.st_size; | |
540 | } | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
6d363459 AH |
545 | /** |
546 | * dso__data_size - Return dso data size | |
547 | * @dso: dso object | |
548 | * @machine: machine object | |
549 | * | |
550 | * Return: dso data size | |
551 | */ | |
552 | off_t dso__data_size(struct dso *dso, struct machine *machine) | |
553 | { | |
554 | int fd; | |
555 | ||
556 | fd = dso__data_fd(dso, machine); | |
557 | if (fd < 0) | |
558 | return fd; | |
559 | ||
560 | if (data_file_size(dso)) | |
561 | return -1; | |
562 | ||
563 | /* For now just estimate dso data size is close to file size */ | |
564 | return dso->data.file_size; | |
565 | } | |
566 | ||
c3fbd2a6 JO |
567 | static ssize_t data_read_offset(struct dso *dso, u64 offset, |
568 | u8 *data, ssize_t size) | |
569 | { | |
570 | if (data_file_size(dso)) | |
571 | return -1; | |
572 | ||
573 | /* Check the offset sanity. */ | |
574 | if (offset > dso->data.file_size) | |
575 | return -1; | |
576 | ||
577 | if (offset + size < offset) | |
578 | return -1; | |
579 | ||
580 | return cached_read(dso, offset, data, size); | |
581 | } | |
582 | ||
c1f9aa0a JO |
583 | /** |
584 | * dso__data_read_offset - Read data from dso file offset | |
585 | * @dso: dso object | |
586 | * @machine: machine object | |
587 | * @offset: file offset | |
588 | * @data: buffer to store data | |
589 | * @size: size of the @data buffer | |
590 | * | |
591 | * External interface to read data from dso file offset. Open | |
592 | * dso data file and use cached_read to get the data. | |
593 | */ | |
c3fbd2a6 JO |
594 | ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine, |
595 | u64 offset, u8 *data, ssize_t size) | |
596 | { | |
597 | if (dso__data_fd(dso, machine) < 0) | |
598 | return -1; | |
599 | ||
600 | return data_read_offset(dso, offset, data, size); | |
601 | } | |
602 | ||
c1f9aa0a JO |
603 | /** |
604 | * dso__data_read_addr - Read data from dso address | |
605 | * @dso: dso object | |
606 | * @machine: machine object | |
607 | * @add: virtual memory address | |
608 | * @data: buffer to store data | |
609 | * @size: size of the @data buffer | |
610 | * | |
611 | * External interface to read data from dso address. | |
612 | */ | |
cdd059d7 JO |
613 | ssize_t dso__data_read_addr(struct dso *dso, struct map *map, |
614 | struct machine *machine, u64 addr, | |
615 | u8 *data, ssize_t size) | |
616 | { | |
617 | u64 offset = map->map_ip(map, addr); | |
618 | return dso__data_read_offset(dso, machine, offset, data, size); | |
619 | } | |
620 | ||
621 | struct map *dso__new_map(const char *name) | |
622 | { | |
623 | struct map *map = NULL; | |
624 | struct dso *dso = dso__new(name); | |
625 | ||
626 | if (dso) | |
627 | map = map__new2(0, dso, MAP__FUNCTION); | |
628 | ||
629 | return map; | |
630 | } | |
631 | ||
632 | struct dso *dso__kernel_findnew(struct machine *machine, const char *name, | |
633 | const char *short_name, int dso_type) | |
634 | { | |
635 | /* | |
636 | * The kernel dso could be created by build_id processing. | |
637 | */ | |
638 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name); | |
639 | ||
640 | /* | |
641 | * We need to run this in all cases, since during the build_id | |
642 | * processing we had no idea this was the kernel dso. | |
643 | */ | |
644 | if (dso != NULL) { | |
58a98c9c | 645 | dso__set_short_name(dso, short_name, false); |
cdd059d7 JO |
646 | dso->kernel = dso_type; |
647 | } | |
648 | ||
649 | return dso; | |
650 | } | |
651 | ||
bf4414ae | 652 | void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 JO |
653 | { |
654 | if (name == NULL) | |
655 | return; | |
7e155d4d ACM |
656 | |
657 | if (dso->long_name_allocated) | |
bf4414ae | 658 | free((char *)dso->long_name); |
7e155d4d ACM |
659 | |
660 | dso->long_name = name; | |
661 | dso->long_name_len = strlen(name); | |
662 | dso->long_name_allocated = name_allocated; | |
cdd059d7 JO |
663 | } |
664 | ||
58a98c9c | 665 | void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 JO |
666 | { |
667 | if (name == NULL) | |
668 | return; | |
58a98c9c AH |
669 | |
670 | if (dso->short_name_allocated) | |
671 | free((char *)dso->short_name); | |
672 | ||
673 | dso->short_name = name; | |
674 | dso->short_name_len = strlen(name); | |
675 | dso->short_name_allocated = name_allocated; | |
cdd059d7 JO |
676 | } |
677 | ||
678 | static void dso__set_basename(struct dso *dso) | |
679 | { | |
ac5e7f84 SE |
680 | /* |
681 | * basename() may modify path buffer, so we must pass | |
682 | * a copy. | |
683 | */ | |
684 | char *base, *lname = strdup(dso->long_name); | |
685 | ||
686 | if (!lname) | |
687 | return; | |
688 | ||
689 | /* | |
690 | * basename() may return a pointer to internal | |
691 | * storage which is reused in subsequent calls | |
692 | * so copy the result. | |
693 | */ | |
694 | base = strdup(basename(lname)); | |
695 | ||
696 | free(lname); | |
697 | ||
698 | if (!base) | |
699 | return; | |
700 | ||
701 | dso__set_short_name(dso, base, true); | |
cdd059d7 JO |
702 | } |
703 | ||
704 | int dso__name_len(const struct dso *dso) | |
705 | { | |
706 | if (!dso) | |
707 | return strlen("[unknown]"); | |
708 | if (verbose) | |
709 | return dso->long_name_len; | |
710 | ||
711 | return dso->short_name_len; | |
712 | } | |
713 | ||
714 | bool dso__loaded(const struct dso *dso, enum map_type type) | |
715 | { | |
716 | return dso->loaded & (1 << type); | |
717 | } | |
718 | ||
719 | bool dso__sorted_by_name(const struct dso *dso, enum map_type type) | |
720 | { | |
721 | return dso->sorted_by_name & (1 << type); | |
722 | } | |
723 | ||
724 | void dso__set_sorted_by_name(struct dso *dso, enum map_type type) | |
725 | { | |
726 | dso->sorted_by_name |= (1 << type); | |
727 | } | |
728 | ||
729 | struct dso *dso__new(const char *name) | |
730 | { | |
731 | struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1); | |
732 | ||
733 | if (dso != NULL) { | |
734 | int i; | |
735 | strcpy(dso->name, name); | |
7e155d4d | 736 | dso__set_long_name(dso, dso->name, false); |
58a98c9c | 737 | dso__set_short_name(dso, dso->name, false); |
cdd059d7 JO |
738 | for (i = 0; i < MAP__NR_TYPES; ++i) |
739 | dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; | |
ca40e2af | 740 | dso->data.cache = RB_ROOT; |
53fa8eaa | 741 | dso->data.fd = -1; |
c27697d6 | 742 | dso->data.status = DSO_DATA_STATUS_UNKNOWN; |
cdd059d7 | 743 | dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; |
5f70619d | 744 | dso->binary_type = DSO_BINARY_TYPE__NOT_FOUND; |
c6d8f2a4 | 745 | dso->is_64_bit = (sizeof(void *) == 8); |
cdd059d7 | 746 | dso->loaded = 0; |
0131c4ec | 747 | dso->rel = 0; |
cdd059d7 JO |
748 | dso->sorted_by_name = 0; |
749 | dso->has_build_id = 0; | |
2cc9d0ef | 750 | dso->has_srcline = 1; |
906049c8 | 751 | dso->a2l_fails = 1; |
cdd059d7 JO |
752 | dso->kernel = DSO_TYPE_USER; |
753 | dso->needs_swap = DSO_SWAP__UNSET; | |
754 | INIT_LIST_HEAD(&dso->node); | |
eba5102d | 755 | INIT_LIST_HEAD(&dso->data.open_entry); |
cdd059d7 JO |
756 | } |
757 | ||
758 | return dso; | |
759 | } | |
760 | ||
761 | void dso__delete(struct dso *dso) | |
762 | { | |
763 | int i; | |
764 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
765 | symbols__delete(&dso->symbols[i]); | |
ee021d42 ACM |
766 | |
767 | if (dso->short_name_allocated) { | |
04662523 | 768 | zfree((char **)&dso->short_name); |
ee021d42 ACM |
769 | dso->short_name_allocated = false; |
770 | } | |
771 | ||
772 | if (dso->long_name_allocated) { | |
04662523 | 773 | zfree((char **)&dso->long_name); |
ee021d42 ACM |
774 | dso->long_name_allocated = false; |
775 | } | |
776 | ||
53fa8eaa | 777 | dso__data_close(dso); |
ca40e2af | 778 | dso_cache__free(&dso->data.cache); |
454ff00f | 779 | dso__free_a2l(dso); |
04662523 | 780 | zfree(&dso->symsrc_filename); |
cdd059d7 JO |
781 | free(dso); |
782 | } | |
783 | ||
784 | void dso__set_build_id(struct dso *dso, void *build_id) | |
785 | { | |
786 | memcpy(dso->build_id, build_id, sizeof(dso->build_id)); | |
787 | dso->has_build_id = 1; | |
788 | } | |
789 | ||
790 | bool dso__build_id_equal(const struct dso *dso, u8 *build_id) | |
791 | { | |
792 | return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0; | |
793 | } | |
794 | ||
795 | void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine) | |
796 | { | |
797 | char path[PATH_MAX]; | |
798 | ||
799 | if (machine__is_default_guest(machine)) | |
800 | return; | |
801 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); | |
802 | if (sysfs__read_build_id(path, dso->build_id, | |
803 | sizeof(dso->build_id)) == 0) | |
804 | dso->has_build_id = true; | |
805 | } | |
806 | ||
807 | int dso__kernel_module_get_build_id(struct dso *dso, | |
808 | const char *root_dir) | |
809 | { | |
810 | char filename[PATH_MAX]; | |
811 | /* | |
812 | * kernel module short names are of the form "[module]" and | |
813 | * we need just "module" here. | |
814 | */ | |
815 | const char *name = dso->short_name + 1; | |
816 | ||
817 | snprintf(filename, sizeof(filename), | |
818 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", | |
819 | root_dir, (int)strlen(name) - 1, name); | |
820 | ||
821 | if (sysfs__read_build_id(filename, dso->build_id, | |
822 | sizeof(dso->build_id)) == 0) | |
823 | dso->has_build_id = true; | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) | |
829 | { | |
830 | bool have_build_id = false; | |
831 | struct dso *pos; | |
832 | ||
833 | list_for_each_entry(pos, head, node) { | |
834 | if (with_hits && !pos->hit) | |
835 | continue; | |
836 | if (pos->has_build_id) { | |
837 | have_build_id = true; | |
838 | continue; | |
839 | } | |
840 | if (filename__read_build_id(pos->long_name, pos->build_id, | |
841 | sizeof(pos->build_id)) > 0) { | |
842 | have_build_id = true; | |
843 | pos->has_build_id = true; | |
844 | } | |
845 | } | |
846 | ||
847 | return have_build_id; | |
848 | } | |
849 | ||
850 | void dsos__add(struct list_head *head, struct dso *dso) | |
851 | { | |
852 | list_add_tail(&dso->node, head); | |
853 | } | |
854 | ||
3344996e | 855 | struct dso *dsos__find(const struct list_head *head, const char *name, bool cmp_short) |
cdd059d7 JO |
856 | { |
857 | struct dso *pos; | |
858 | ||
f9ceffb6 WL |
859 | if (cmp_short) { |
860 | list_for_each_entry(pos, head, node) | |
861 | if (strcmp(pos->short_name, name) == 0) | |
862 | return pos; | |
863 | return NULL; | |
864 | } | |
cdd059d7 JO |
865 | list_for_each_entry(pos, head, node) |
866 | if (strcmp(pos->long_name, name) == 0) | |
867 | return pos; | |
868 | return NULL; | |
869 | } | |
870 | ||
871 | struct dso *__dsos__findnew(struct list_head *head, const char *name) | |
872 | { | |
f9ceffb6 | 873 | struct dso *dso = dsos__find(head, name, false); |
cdd059d7 JO |
874 | |
875 | if (!dso) { | |
876 | dso = dso__new(name); | |
877 | if (dso != NULL) { | |
878 | dsos__add(head, dso); | |
879 | dso__set_basename(dso); | |
880 | } | |
881 | } | |
882 | ||
883 | return dso; | |
884 | } | |
885 | ||
886 | size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, | |
417c2ff6 | 887 | bool (skip)(struct dso *dso, int parm), int parm) |
cdd059d7 JO |
888 | { |
889 | struct dso *pos; | |
890 | size_t ret = 0; | |
891 | ||
892 | list_for_each_entry(pos, head, node) { | |
417c2ff6 | 893 | if (skip && skip(pos, parm)) |
cdd059d7 JO |
894 | continue; |
895 | ret += dso__fprintf_buildid(pos, fp); | |
896 | ret += fprintf(fp, " %s\n", pos->long_name); | |
897 | } | |
898 | return ret; | |
899 | } | |
900 | ||
901 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) | |
902 | { | |
903 | struct dso *pos; | |
904 | size_t ret = 0; | |
905 | ||
906 | list_for_each_entry(pos, head, node) { | |
907 | int i; | |
908 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
909 | ret += dso__fprintf(pos, i, fp); | |
910 | } | |
911 | ||
912 | return ret; | |
913 | } | |
914 | ||
915 | size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) | |
916 | { | |
917 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
918 | ||
919 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); | |
920 | return fprintf(fp, "%s", sbuild_id); | |
921 | } | |
922 | ||
923 | size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp) | |
924 | { | |
925 | struct rb_node *nd; | |
926 | size_t ret = fprintf(fp, "dso: %s (", dso->short_name); | |
927 | ||
928 | if (dso->short_name != dso->long_name) | |
929 | ret += fprintf(fp, "%s, ", dso->long_name); | |
930 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], | |
919d590f | 931 | dso__loaded(dso, type) ? "" : "NOT "); |
cdd059d7 JO |
932 | ret += dso__fprintf_buildid(dso, fp); |
933 | ret += fprintf(fp, ")\n"); | |
934 | for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) { | |
935 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
936 | ret += symbol__fprintf(pos, fp); | |
937 | } | |
938 | ||
939 | return ret; | |
940 | } | |
2b5b8bb2 AH |
941 | |
942 | enum dso_type dso__type(struct dso *dso, struct machine *machine) | |
943 | { | |
944 | int fd; | |
945 | ||
946 | fd = dso__data_fd(dso, machine); | |
947 | if (fd < 0) | |
948 | return DSO__TYPE_UNKNOWN; | |
949 | ||
950 | return dso__type_fd(fd); | |
951 | } |