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; | |
40 | ||
41 | switch (type) { | |
42 | case DSO_BINARY_TYPE__DEBUGLINK: { | |
43 | char *debuglink; | |
44 | ||
7d2a5122 ACM |
45 | strncpy(filename, dso->long_name, size); |
46 | debuglink = filename + dso->long_name_len; | |
47 | while (debuglink != filename && *debuglink != '/') | |
cdd059d7 JO |
48 | debuglink--; |
49 | if (*debuglink == '/') | |
50 | debuglink++; | |
0d3dc5e8 SE |
51 | ret = filename__read_debuglink(dso->long_name, debuglink, |
52 | size - (debuglink - filename)); | |
cdd059d7 JO |
53 | } |
54 | break; | |
55 | case DSO_BINARY_TYPE__BUILD_ID_CACHE: | |
56 | /* skip the locally configured cache if a symfs is given */ | |
57 | if (symbol_conf.symfs[0] || | |
7d2a5122 | 58 | (dso__build_id_filename(dso, filename, size) == NULL)) |
cdd059d7 JO |
59 | ret = -1; |
60 | break; | |
61 | ||
62 | case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: | |
7d2a5122 | 63 | snprintf(filename, size, "%s/usr/lib/debug%s.debug", |
cdd059d7 JO |
64 | symbol_conf.symfs, dso->long_name); |
65 | break; | |
66 | ||
67 | case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: | |
7d2a5122 | 68 | snprintf(filename, size, "%s/usr/lib/debug%s", |
cdd059d7 JO |
69 | symbol_conf.symfs, dso->long_name); |
70 | break; | |
71 | ||
9cd00941 RRD |
72 | case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: |
73 | { | |
bf4414ae | 74 | const char *last_slash; |
9cd00941 RRD |
75 | size_t len; |
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 | ||
7d2a5122 | 82 | len = scnprintf(filename, size, "%s", symbol_conf.symfs); |
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); | |
7d2a5122 | 103 | snprintf(filename, size, |
cdd059d7 JO |
104 | "%s/usr/lib/debug/.build-id/%.2s/%s.debug", |
105 | symbol_conf.symfs, build_id_hex, build_id_hex + 2); | |
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: |
7d2a5122 | 111 | snprintf(filename, size, "%s%s", |
cdd059d7 JO |
112 | symbol_conf.symfs, dso->long_name); |
113 | break; | |
114 | ||
115 | case DSO_BINARY_TYPE__GUEST_KMODULE: | |
7d2a5122 | 116 | snprintf(filename, size, "%s%s%s", symbol_conf.symfs, |
cdd059d7 JO |
117 | root_dir, dso->long_name); |
118 | break; | |
119 | ||
120 | case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: | |
7d2a5122 | 121 | snprintf(filename, size, "%s%s", symbol_conf.symfs, |
cdd059d7 JO |
122 | dso->long_name); |
123 | break; | |
124 | ||
8e0cf965 AH |
125 | case DSO_BINARY_TYPE__KCORE: |
126 | case DSO_BINARY_TYPE__GUEST_KCORE: | |
7d2a5122 | 127 | snprintf(filename, size, "%s", dso->long_name); |
8e0cf965 AH |
128 | break; |
129 | ||
cdd059d7 JO |
130 | default: |
131 | case DSO_BINARY_TYPE__KALLSYMS: | |
cdd059d7 | 132 | case DSO_BINARY_TYPE__GUEST_KALLSYMS: |
cdd059d7 JO |
133 | case DSO_BINARY_TYPE__JAVA_JIT: |
134 | case DSO_BINARY_TYPE__NOT_FOUND: | |
135 | ret = -1; | |
136 | break; | |
137 | } | |
138 | ||
139 | return ret; | |
140 | } | |
141 | ||
eba5102d | 142 | /* |
bda6ee4a | 143 | * Global list of open DSOs and the counter. |
eba5102d JO |
144 | */ |
145 | static LIST_HEAD(dso__data_open); | |
bda6ee4a | 146 | static long dso__data_open_cnt; |
eba5102d JO |
147 | |
148 | static void dso__list_add(struct dso *dso) | |
149 | { | |
150 | list_add_tail(&dso->data.open_entry, &dso__data_open); | |
bda6ee4a | 151 | dso__data_open_cnt++; |
eba5102d JO |
152 | } |
153 | ||
154 | static void dso__list_del(struct dso *dso) | |
155 | { | |
156 | list_del(&dso->data.open_entry); | |
bda6ee4a JO |
157 | WARN_ONCE(dso__data_open_cnt <= 0, |
158 | "DSO data fd counter out of bounds."); | |
159 | dso__data_open_cnt--; | |
eba5102d JO |
160 | } |
161 | ||
a08cae03 JO |
162 | static void close_first_dso(void); |
163 | ||
164 | static int do_open(char *name) | |
165 | { | |
166 | int fd; | |
167 | ||
168 | do { | |
169 | fd = open(name, O_RDONLY); | |
170 | if (fd >= 0) | |
171 | return fd; | |
172 | ||
173 | pr_debug("dso open failed, mmap: %s\n", strerror(errno)); | |
174 | if (!dso__data_open_cnt || errno != EMFILE) | |
175 | break; | |
176 | ||
177 | close_first_dso(); | |
178 | } while (1); | |
179 | ||
180 | return -1; | |
181 | } | |
182 | ||
eba5102d | 183 | static int __open_dso(struct dso *dso, struct machine *machine) |
cdd059d7 | 184 | { |
cdd059d7 | 185 | int fd; |
ee4e9625 ACM |
186 | char *root_dir = (char *)""; |
187 | char *name = malloc(PATH_MAX); | |
cdd059d7 | 188 | |
cdd059d7 JO |
189 | if (!name) |
190 | return -ENOMEM; | |
191 | ||
192 | if (machine) | |
193 | root_dir = machine->root_dir; | |
194 | ||
5f70619d | 195 | if (dso__read_binary_type_filename(dso, dso->binary_type, |
ee4e9625 | 196 | root_dir, name, PATH_MAX)) { |
cdd059d7 JO |
197 | free(name); |
198 | return -EINVAL; | |
199 | } | |
200 | ||
a08cae03 | 201 | fd = do_open(name); |
cdd059d7 JO |
202 | free(name); |
203 | return fd; | |
204 | } | |
205 | ||
c6580451 JO |
206 | static void check_data_close(void); |
207 | ||
c1f9aa0a JO |
208 | /** |
209 | * dso_close - Open DSO data file | |
210 | * @dso: dso object | |
211 | * | |
212 | * Open @dso's data file descriptor and updates | |
213 | * list/count of open DSO objects. | |
214 | */ | |
eba5102d JO |
215 | static int open_dso(struct dso *dso, struct machine *machine) |
216 | { | |
217 | int fd = __open_dso(dso, machine); | |
218 | ||
a6f6ae99 | 219 | if (fd >= 0) { |
eba5102d | 220 | dso__list_add(dso); |
c6580451 JO |
221 | /* |
222 | * Check if we crossed the allowed number | |
223 | * of opened DSOs and close one if needed. | |
224 | */ | |
225 | check_data_close(); | |
226 | } | |
eba5102d JO |
227 | |
228 | return fd; | |
229 | } | |
230 | ||
231 | static void close_data_fd(struct dso *dso) | |
53fa8eaa JO |
232 | { |
233 | if (dso->data.fd >= 0) { | |
234 | close(dso->data.fd); | |
235 | dso->data.fd = -1; | |
c3fbd2a6 | 236 | dso->data.file_size = 0; |
eba5102d | 237 | dso__list_del(dso); |
53fa8eaa JO |
238 | } |
239 | } | |
240 | ||
c1f9aa0a JO |
241 | /** |
242 | * dso_close - Close DSO data file | |
243 | * @dso: dso object | |
244 | * | |
245 | * Close @dso's data file descriptor and updates | |
246 | * list/count of open DSO objects. | |
247 | */ | |
eba5102d JO |
248 | static void close_dso(struct dso *dso) |
249 | { | |
250 | close_data_fd(dso); | |
251 | } | |
252 | ||
c6580451 JO |
253 | static void close_first_dso(void) |
254 | { | |
255 | struct dso *dso; | |
256 | ||
257 | dso = list_first_entry(&dso__data_open, struct dso, data.open_entry); | |
258 | close_dso(dso); | |
259 | } | |
260 | ||
261 | static rlim_t get_fd_limit(void) | |
262 | { | |
263 | struct rlimit l; | |
264 | rlim_t limit = 0; | |
265 | ||
266 | /* Allow half of the current open fd limit. */ | |
267 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
268 | if (l.rlim_cur == RLIM_INFINITY) | |
269 | limit = l.rlim_cur; | |
270 | else | |
271 | limit = l.rlim_cur / 2; | |
272 | } else { | |
273 | pr_err("failed to get fd limit\n"); | |
274 | limit = 1; | |
275 | } | |
276 | ||
277 | return limit; | |
278 | } | |
279 | ||
280 | static bool may_cache_fd(void) | |
281 | { | |
282 | static rlim_t limit; | |
283 | ||
284 | if (!limit) | |
285 | limit = get_fd_limit(); | |
286 | ||
287 | if (limit == RLIM_INFINITY) | |
288 | return true; | |
289 | ||
290 | return limit > (rlim_t) dso__data_open_cnt; | |
291 | } | |
292 | ||
c1f9aa0a JO |
293 | /* |
294 | * Check and close LRU dso if we crossed allowed limit | |
295 | * for opened dso file descriptors. The limit is half | |
296 | * of the RLIMIT_NOFILE files opened. | |
297 | */ | |
c6580451 JO |
298 | static void check_data_close(void) |
299 | { | |
300 | bool cache_fd = may_cache_fd(); | |
301 | ||
302 | if (!cache_fd) | |
303 | close_first_dso(); | |
304 | } | |
305 | ||
c1f9aa0a JO |
306 | /** |
307 | * dso__data_close - Close DSO data file | |
308 | * @dso: dso object | |
309 | * | |
310 | * External interface to close @dso's data file descriptor. | |
311 | */ | |
eba5102d JO |
312 | void dso__data_close(struct dso *dso) |
313 | { | |
314 | close_dso(dso); | |
315 | } | |
316 | ||
c1f9aa0a JO |
317 | /** |
318 | * dso__data_fd - Get dso's data file descriptor | |
319 | * @dso: dso object | |
320 | * @machine: machine object | |
321 | * | |
322 | * External interface to find dso's file, open it and | |
323 | * returns file descriptor. | |
324 | */ | |
cdd059d7 JO |
325 | int dso__data_fd(struct dso *dso, struct machine *machine) |
326 | { | |
631d34b5 | 327 | enum dso_binary_type binary_type_data[] = { |
cdd059d7 JO |
328 | DSO_BINARY_TYPE__BUILD_ID_CACHE, |
329 | DSO_BINARY_TYPE__SYSTEM_PATH_DSO, | |
330 | DSO_BINARY_TYPE__NOT_FOUND, | |
331 | }; | |
332 | int i = 0; | |
333 | ||
c27697d6 AH |
334 | if (dso->data.status == DSO_DATA_STATUS_ERROR) |
335 | return -1; | |
336 | ||
53fa8eaa | 337 | if (dso->data.fd >= 0) |
c27697d6 | 338 | goto out; |
53fa8eaa JO |
339 | |
340 | if (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND) { | |
341 | dso->data.fd = open_dso(dso, machine); | |
c27697d6 | 342 | goto out; |
53fa8eaa | 343 | } |
cdd059d7 JO |
344 | |
345 | do { | |
5f70619d | 346 | dso->binary_type = binary_type_data[i++]; |
cdd059d7 | 347 | |
c27697d6 AH |
348 | dso->data.fd = open_dso(dso, machine); |
349 | if (dso->data.fd >= 0) | |
350 | goto out; | |
cdd059d7 | 351 | |
5f70619d | 352 | } while (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND); |
c27697d6 AH |
353 | out: |
354 | if (dso->data.fd >= 0) | |
355 | dso->data.status = DSO_DATA_STATUS_OK; | |
356 | else | |
357 | dso->data.status = DSO_DATA_STATUS_ERROR; | |
cdd059d7 | 358 | |
c27697d6 | 359 | return dso->data.fd; |
cdd059d7 JO |
360 | } |
361 | ||
288be943 AH |
362 | bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by) |
363 | { | |
364 | u32 flag = 1 << by; | |
365 | ||
366 | if (dso->data.status_seen & flag) | |
367 | return true; | |
368 | ||
369 | dso->data.status_seen |= flag; | |
370 | ||
371 | return false; | |
372 | } | |
373 | ||
cdd059d7 JO |
374 | static void |
375 | dso_cache__free(struct rb_root *root) | |
376 | { | |
377 | struct rb_node *next = rb_first(root); | |
378 | ||
379 | while (next) { | |
380 | struct dso_cache *cache; | |
381 | ||
382 | cache = rb_entry(next, struct dso_cache, rb_node); | |
383 | next = rb_next(&cache->rb_node); | |
384 | rb_erase(&cache->rb_node, root); | |
385 | free(cache); | |
386 | } | |
387 | } | |
388 | ||
3344996e | 389 | static struct dso_cache *dso_cache__find(const struct rb_root *root, u64 offset) |
cdd059d7 | 390 | { |
3344996e ACM |
391 | struct rb_node * const *p = &root->rb_node; |
392 | const struct rb_node *parent = NULL; | |
cdd059d7 JO |
393 | struct dso_cache *cache; |
394 | ||
395 | while (*p != NULL) { | |
396 | u64 end; | |
397 | ||
398 | parent = *p; | |
399 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
400 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
401 | ||
402 | if (offset < cache->offset) | |
403 | p = &(*p)->rb_left; | |
404 | else if (offset >= end) | |
405 | p = &(*p)->rb_right; | |
406 | else | |
407 | return cache; | |
408 | } | |
409 | return NULL; | |
410 | } | |
411 | ||
412 | static void | |
413 | dso_cache__insert(struct rb_root *root, struct dso_cache *new) | |
414 | { | |
415 | struct rb_node **p = &root->rb_node; | |
416 | struct rb_node *parent = NULL; | |
417 | struct dso_cache *cache; | |
418 | u64 offset = new->offset; | |
419 | ||
420 | while (*p != NULL) { | |
421 | u64 end; | |
422 | ||
423 | parent = *p; | |
424 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
425 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
426 | ||
427 | if (offset < cache->offset) | |
428 | p = &(*p)->rb_left; | |
429 | else if (offset >= end) | |
430 | p = &(*p)->rb_right; | |
431 | } | |
432 | ||
433 | rb_link_node(&new->rb_node, parent, p); | |
434 | rb_insert_color(&new->rb_node, root); | |
435 | } | |
436 | ||
437 | static ssize_t | |
438 | dso_cache__memcpy(struct dso_cache *cache, u64 offset, | |
439 | u8 *data, u64 size) | |
440 | { | |
441 | u64 cache_offset = offset - cache->offset; | |
442 | u64 cache_size = min(cache->size - cache_offset, size); | |
443 | ||
444 | memcpy(data, cache->data + cache_offset, cache_size); | |
445 | return cache_size; | |
446 | } | |
447 | ||
448 | static ssize_t | |
c3fbd2a6 | 449 | dso_cache__read(struct dso *dso, u64 offset, u8 *data, ssize_t size) |
cdd059d7 JO |
450 | { |
451 | struct dso_cache *cache; | |
452 | ssize_t ret; | |
cdd059d7 JO |
453 | |
454 | do { | |
455 | u64 cache_offset; | |
456 | ||
457 | ret = -ENOMEM; | |
458 | ||
459 | cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE); | |
460 | if (!cache) | |
461 | break; | |
462 | ||
463 | cache_offset = offset & DSO__DATA_CACHE_MASK; | |
464 | ret = -EINVAL; | |
465 | ||
c3fbd2a6 | 466 | if (-1 == lseek(dso->data.fd, cache_offset, SEEK_SET)) |
cdd059d7 JO |
467 | break; |
468 | ||
c3fbd2a6 | 469 | ret = read(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE); |
cdd059d7 JO |
470 | if (ret <= 0) |
471 | break; | |
472 | ||
473 | cache->offset = cache_offset; | |
474 | cache->size = ret; | |
ca40e2af | 475 | dso_cache__insert(&dso->data.cache, cache); |
cdd059d7 JO |
476 | |
477 | ret = dso_cache__memcpy(cache, offset, data, size); | |
478 | ||
479 | } while (0); | |
480 | ||
481 | if (ret <= 0) | |
482 | free(cache); | |
483 | ||
cdd059d7 JO |
484 | return ret; |
485 | } | |
486 | ||
c3fbd2a6 JO |
487 | static ssize_t dso_cache_read(struct dso *dso, u64 offset, |
488 | u8 *data, ssize_t size) | |
cdd059d7 JO |
489 | { |
490 | struct dso_cache *cache; | |
491 | ||
ca40e2af | 492 | cache = dso_cache__find(&dso->data.cache, offset); |
cdd059d7 JO |
493 | if (cache) |
494 | return dso_cache__memcpy(cache, offset, data, size); | |
495 | else | |
c3fbd2a6 | 496 | return dso_cache__read(dso, offset, data, size); |
cdd059d7 JO |
497 | } |
498 | ||
c1f9aa0a JO |
499 | /* |
500 | * Reads and caches dso data DSO__DATA_CACHE_SIZE size chunks | |
501 | * in the rb_tree. Any read to already cached data is served | |
502 | * by cached data. | |
503 | */ | |
c3fbd2a6 | 504 | static ssize_t cached_read(struct dso *dso, u64 offset, u8 *data, ssize_t size) |
cdd059d7 JO |
505 | { |
506 | ssize_t r = 0; | |
507 | u8 *p = data; | |
508 | ||
509 | do { | |
510 | ssize_t ret; | |
511 | ||
c3fbd2a6 | 512 | ret = dso_cache_read(dso, offset, p, size); |
cdd059d7 JO |
513 | if (ret < 0) |
514 | return ret; | |
515 | ||
516 | /* Reached EOF, return what we have. */ | |
517 | if (!ret) | |
518 | break; | |
519 | ||
520 | BUG_ON(ret > size); | |
521 | ||
522 | r += ret; | |
523 | p += ret; | |
524 | offset += ret; | |
525 | size -= ret; | |
526 | ||
527 | } while (size); | |
528 | ||
529 | return r; | |
530 | } | |
531 | ||
c3fbd2a6 JO |
532 | static int data_file_size(struct dso *dso) |
533 | { | |
534 | struct stat st; | |
535 | ||
536 | if (!dso->data.file_size) { | |
537 | if (fstat(dso->data.fd, &st)) { | |
538 | pr_err("dso mmap failed, fstat: %s\n", strerror(errno)); | |
539 | return -1; | |
540 | } | |
541 | dso->data.file_size = st.st_size; | |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
6d363459 AH |
547 | /** |
548 | * dso__data_size - Return dso data size | |
549 | * @dso: dso object | |
550 | * @machine: machine object | |
551 | * | |
552 | * Return: dso data size | |
553 | */ | |
554 | off_t dso__data_size(struct dso *dso, struct machine *machine) | |
555 | { | |
556 | int fd; | |
557 | ||
558 | fd = dso__data_fd(dso, machine); | |
559 | if (fd < 0) | |
560 | return fd; | |
561 | ||
562 | if (data_file_size(dso)) | |
563 | return -1; | |
564 | ||
565 | /* For now just estimate dso data size is close to file size */ | |
566 | return dso->data.file_size; | |
567 | } | |
568 | ||
c3fbd2a6 JO |
569 | static ssize_t data_read_offset(struct dso *dso, u64 offset, |
570 | u8 *data, ssize_t size) | |
571 | { | |
572 | if (data_file_size(dso)) | |
573 | return -1; | |
574 | ||
575 | /* Check the offset sanity. */ | |
576 | if (offset > dso->data.file_size) | |
577 | return -1; | |
578 | ||
579 | if (offset + size < offset) | |
580 | return -1; | |
581 | ||
582 | return cached_read(dso, offset, data, size); | |
583 | } | |
584 | ||
c1f9aa0a JO |
585 | /** |
586 | * dso__data_read_offset - Read data from dso file offset | |
587 | * @dso: dso object | |
588 | * @machine: machine object | |
589 | * @offset: file offset | |
590 | * @data: buffer to store data | |
591 | * @size: size of the @data buffer | |
592 | * | |
593 | * External interface to read data from dso file offset. Open | |
594 | * dso data file and use cached_read to get the data. | |
595 | */ | |
c3fbd2a6 JO |
596 | ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine, |
597 | u64 offset, u8 *data, ssize_t size) | |
598 | { | |
599 | if (dso__data_fd(dso, machine) < 0) | |
600 | return -1; | |
601 | ||
602 | return data_read_offset(dso, offset, data, size); | |
603 | } | |
604 | ||
c1f9aa0a JO |
605 | /** |
606 | * dso__data_read_addr - Read data from dso address | |
607 | * @dso: dso object | |
608 | * @machine: machine object | |
609 | * @add: virtual memory address | |
610 | * @data: buffer to store data | |
611 | * @size: size of the @data buffer | |
612 | * | |
613 | * External interface to read data from dso address. | |
614 | */ | |
cdd059d7 JO |
615 | ssize_t dso__data_read_addr(struct dso *dso, struct map *map, |
616 | struct machine *machine, u64 addr, | |
617 | u8 *data, ssize_t size) | |
618 | { | |
619 | u64 offset = map->map_ip(map, addr); | |
620 | return dso__data_read_offset(dso, machine, offset, data, size); | |
621 | } | |
622 | ||
623 | struct map *dso__new_map(const char *name) | |
624 | { | |
625 | struct map *map = NULL; | |
626 | struct dso *dso = dso__new(name); | |
627 | ||
628 | if (dso) | |
629 | map = map__new2(0, dso, MAP__FUNCTION); | |
630 | ||
631 | return map; | |
632 | } | |
633 | ||
634 | struct dso *dso__kernel_findnew(struct machine *machine, const char *name, | |
635 | const char *short_name, int dso_type) | |
636 | { | |
637 | /* | |
638 | * The kernel dso could be created by build_id processing. | |
639 | */ | |
640 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name); | |
641 | ||
642 | /* | |
643 | * We need to run this in all cases, since during the build_id | |
644 | * processing we had no idea this was the kernel dso. | |
645 | */ | |
646 | if (dso != NULL) { | |
58a98c9c | 647 | dso__set_short_name(dso, short_name, false); |
cdd059d7 JO |
648 | dso->kernel = dso_type; |
649 | } | |
650 | ||
651 | return dso; | |
652 | } | |
653 | ||
bf4414ae | 654 | void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 JO |
655 | { |
656 | if (name == NULL) | |
657 | return; | |
7e155d4d ACM |
658 | |
659 | if (dso->long_name_allocated) | |
bf4414ae | 660 | free((char *)dso->long_name); |
7e155d4d ACM |
661 | |
662 | dso->long_name = name; | |
663 | dso->long_name_len = strlen(name); | |
664 | dso->long_name_allocated = name_allocated; | |
cdd059d7 JO |
665 | } |
666 | ||
58a98c9c | 667 | void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 JO |
668 | { |
669 | if (name == NULL) | |
670 | return; | |
58a98c9c AH |
671 | |
672 | if (dso->short_name_allocated) | |
673 | free((char *)dso->short_name); | |
674 | ||
675 | dso->short_name = name; | |
676 | dso->short_name_len = strlen(name); | |
677 | dso->short_name_allocated = name_allocated; | |
cdd059d7 JO |
678 | } |
679 | ||
680 | static void dso__set_basename(struct dso *dso) | |
681 | { | |
ac5e7f84 SE |
682 | /* |
683 | * basename() may modify path buffer, so we must pass | |
684 | * a copy. | |
685 | */ | |
686 | char *base, *lname = strdup(dso->long_name); | |
687 | ||
688 | if (!lname) | |
689 | return; | |
690 | ||
691 | /* | |
692 | * basename() may return a pointer to internal | |
693 | * storage which is reused in subsequent calls | |
694 | * so copy the result. | |
695 | */ | |
696 | base = strdup(basename(lname)); | |
697 | ||
698 | free(lname); | |
699 | ||
700 | if (!base) | |
701 | return; | |
702 | ||
703 | dso__set_short_name(dso, base, true); | |
cdd059d7 JO |
704 | } |
705 | ||
706 | int dso__name_len(const struct dso *dso) | |
707 | { | |
708 | if (!dso) | |
709 | return strlen("[unknown]"); | |
710 | if (verbose) | |
711 | return dso->long_name_len; | |
712 | ||
713 | return dso->short_name_len; | |
714 | } | |
715 | ||
716 | bool dso__loaded(const struct dso *dso, enum map_type type) | |
717 | { | |
718 | return dso->loaded & (1 << type); | |
719 | } | |
720 | ||
721 | bool dso__sorted_by_name(const struct dso *dso, enum map_type type) | |
722 | { | |
723 | return dso->sorted_by_name & (1 << type); | |
724 | } | |
725 | ||
726 | void dso__set_sorted_by_name(struct dso *dso, enum map_type type) | |
727 | { | |
728 | dso->sorted_by_name |= (1 << type); | |
729 | } | |
730 | ||
731 | struct dso *dso__new(const char *name) | |
732 | { | |
733 | struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1); | |
734 | ||
735 | if (dso != NULL) { | |
736 | int i; | |
737 | strcpy(dso->name, name); | |
7e155d4d | 738 | dso__set_long_name(dso, dso->name, false); |
58a98c9c | 739 | dso__set_short_name(dso, dso->name, false); |
cdd059d7 JO |
740 | for (i = 0; i < MAP__NR_TYPES; ++i) |
741 | dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; | |
ca40e2af | 742 | dso->data.cache = RB_ROOT; |
53fa8eaa | 743 | dso->data.fd = -1; |
c27697d6 | 744 | dso->data.status = DSO_DATA_STATUS_UNKNOWN; |
cdd059d7 | 745 | dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; |
5f70619d | 746 | dso->binary_type = DSO_BINARY_TYPE__NOT_FOUND; |
c6d8f2a4 | 747 | dso->is_64_bit = (sizeof(void *) == 8); |
cdd059d7 | 748 | dso->loaded = 0; |
0131c4ec | 749 | dso->rel = 0; |
cdd059d7 JO |
750 | dso->sorted_by_name = 0; |
751 | dso->has_build_id = 0; | |
2cc9d0ef | 752 | dso->has_srcline = 1; |
906049c8 | 753 | dso->a2l_fails = 1; |
cdd059d7 JO |
754 | dso->kernel = DSO_TYPE_USER; |
755 | dso->needs_swap = DSO_SWAP__UNSET; | |
756 | INIT_LIST_HEAD(&dso->node); | |
eba5102d | 757 | INIT_LIST_HEAD(&dso->data.open_entry); |
cdd059d7 JO |
758 | } |
759 | ||
760 | return dso; | |
761 | } | |
762 | ||
763 | void dso__delete(struct dso *dso) | |
764 | { | |
765 | int i; | |
766 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
767 | symbols__delete(&dso->symbols[i]); | |
ee021d42 ACM |
768 | |
769 | if (dso->short_name_allocated) { | |
04662523 | 770 | zfree((char **)&dso->short_name); |
ee021d42 ACM |
771 | dso->short_name_allocated = false; |
772 | } | |
773 | ||
774 | if (dso->long_name_allocated) { | |
04662523 | 775 | zfree((char **)&dso->long_name); |
ee021d42 ACM |
776 | dso->long_name_allocated = false; |
777 | } | |
778 | ||
53fa8eaa | 779 | dso__data_close(dso); |
ca40e2af | 780 | dso_cache__free(&dso->data.cache); |
454ff00f | 781 | dso__free_a2l(dso); |
04662523 | 782 | zfree(&dso->symsrc_filename); |
cdd059d7 JO |
783 | free(dso); |
784 | } | |
785 | ||
786 | void dso__set_build_id(struct dso *dso, void *build_id) | |
787 | { | |
788 | memcpy(dso->build_id, build_id, sizeof(dso->build_id)); | |
789 | dso->has_build_id = 1; | |
790 | } | |
791 | ||
792 | bool dso__build_id_equal(const struct dso *dso, u8 *build_id) | |
793 | { | |
794 | return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0; | |
795 | } | |
796 | ||
797 | void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine) | |
798 | { | |
799 | char path[PATH_MAX]; | |
800 | ||
801 | if (machine__is_default_guest(machine)) | |
802 | return; | |
803 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); | |
804 | if (sysfs__read_build_id(path, dso->build_id, | |
805 | sizeof(dso->build_id)) == 0) | |
806 | dso->has_build_id = true; | |
807 | } | |
808 | ||
809 | int dso__kernel_module_get_build_id(struct dso *dso, | |
810 | const char *root_dir) | |
811 | { | |
812 | char filename[PATH_MAX]; | |
813 | /* | |
814 | * kernel module short names are of the form "[module]" and | |
815 | * we need just "module" here. | |
816 | */ | |
817 | const char *name = dso->short_name + 1; | |
818 | ||
819 | snprintf(filename, sizeof(filename), | |
820 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", | |
821 | root_dir, (int)strlen(name) - 1, name); | |
822 | ||
823 | if (sysfs__read_build_id(filename, dso->build_id, | |
824 | sizeof(dso->build_id)) == 0) | |
825 | dso->has_build_id = true; | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) | |
831 | { | |
832 | bool have_build_id = false; | |
833 | struct dso *pos; | |
834 | ||
835 | list_for_each_entry(pos, head, node) { | |
836 | if (with_hits && !pos->hit) | |
837 | continue; | |
838 | if (pos->has_build_id) { | |
839 | have_build_id = true; | |
840 | continue; | |
841 | } | |
842 | if (filename__read_build_id(pos->long_name, pos->build_id, | |
843 | sizeof(pos->build_id)) > 0) { | |
844 | have_build_id = true; | |
845 | pos->has_build_id = true; | |
846 | } | |
847 | } | |
848 | ||
849 | return have_build_id; | |
850 | } | |
851 | ||
852 | void dsos__add(struct list_head *head, struct dso *dso) | |
853 | { | |
854 | list_add_tail(&dso->node, head); | |
855 | } | |
856 | ||
3344996e | 857 | struct dso *dsos__find(const struct list_head *head, const char *name, bool cmp_short) |
cdd059d7 JO |
858 | { |
859 | struct dso *pos; | |
860 | ||
f9ceffb6 WL |
861 | if (cmp_short) { |
862 | list_for_each_entry(pos, head, node) | |
863 | if (strcmp(pos->short_name, name) == 0) | |
864 | return pos; | |
865 | return NULL; | |
866 | } | |
cdd059d7 JO |
867 | list_for_each_entry(pos, head, node) |
868 | if (strcmp(pos->long_name, name) == 0) | |
869 | return pos; | |
870 | return NULL; | |
871 | } | |
872 | ||
873 | struct dso *__dsos__findnew(struct list_head *head, const char *name) | |
874 | { | |
f9ceffb6 | 875 | struct dso *dso = dsos__find(head, name, false); |
cdd059d7 JO |
876 | |
877 | if (!dso) { | |
878 | dso = dso__new(name); | |
879 | if (dso != NULL) { | |
880 | dsos__add(head, dso); | |
881 | dso__set_basename(dso); | |
882 | } | |
883 | } | |
884 | ||
885 | return dso; | |
886 | } | |
887 | ||
888 | size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, | |
417c2ff6 | 889 | bool (skip)(struct dso *dso, int parm), int parm) |
cdd059d7 JO |
890 | { |
891 | struct dso *pos; | |
892 | size_t ret = 0; | |
893 | ||
894 | list_for_each_entry(pos, head, node) { | |
417c2ff6 | 895 | if (skip && skip(pos, parm)) |
cdd059d7 JO |
896 | continue; |
897 | ret += dso__fprintf_buildid(pos, fp); | |
898 | ret += fprintf(fp, " %s\n", pos->long_name); | |
899 | } | |
900 | return ret; | |
901 | } | |
902 | ||
903 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) | |
904 | { | |
905 | struct dso *pos; | |
906 | size_t ret = 0; | |
907 | ||
908 | list_for_each_entry(pos, head, node) { | |
909 | int i; | |
910 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
911 | ret += dso__fprintf(pos, i, fp); | |
912 | } | |
913 | ||
914 | return ret; | |
915 | } | |
916 | ||
917 | size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) | |
918 | { | |
919 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
920 | ||
921 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); | |
922 | return fprintf(fp, "%s", sbuild_id); | |
923 | } | |
924 | ||
925 | size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp) | |
926 | { | |
927 | struct rb_node *nd; | |
928 | size_t ret = fprintf(fp, "dso: %s (", dso->short_name); | |
929 | ||
930 | if (dso->short_name != dso->long_name) | |
931 | ret += fprintf(fp, "%s, ", dso->long_name); | |
932 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], | |
919d590f | 933 | dso__loaded(dso, type) ? "" : "NOT "); |
cdd059d7 JO |
934 | ret += dso__fprintf_buildid(dso, fp); |
935 | ret += fprintf(fp, ")\n"); | |
936 | for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) { | |
937 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
938 | ret += symbol__fprintf(pos, fp); | |
939 | } | |
940 | ||
941 | return ret; | |
942 | } | |
2b5b8bb2 AH |
943 | |
944 | enum dso_type dso__type(struct dso *dso, struct machine *machine) | |
945 | { | |
946 | int fd; | |
947 | ||
948 | fd = dso__data_fd(dso, machine); | |
949 | if (fd < 0) | |
950 | return DSO__TYPE_UNKNOWN; | |
951 | ||
952 | return dso__type_fd(fd); | |
953 | } |