1 #include <asm/bug.h> 2 #include <sys/time.h> 3 #include <sys/resource.h> 4 #include "symbol.h" 5 #include "dso.h" 6 #include "machine.h" 7 #include "util.h" 8 #include "debug.h" 9 10 char dso__symtab_origin(const struct dso *dso) 11 { 12 static const char origin[] = { 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', 27 }; 28 29 if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND) 30 return '!'; 31 return origin[dso->symtab_type]; 32 } 33 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) 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 45 strncpy(filename, dso->long_name, size); 46 debuglink = filename + dso->long_name_len; 47 while (debuglink != filename && *debuglink != '/') 48 debuglink--; 49 if (*debuglink == '/') 50 debuglink++; 51 ret = filename__read_debuglink(dso->long_name, debuglink, 52 size - (debuglink - filename)); 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] || 58 (dso__build_id_filename(dso, filename, size) == NULL)) 59 ret = -1; 60 break; 61 62 case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: 63 snprintf(filename, size, "%s/usr/lib/debug%s.debug", 64 symbol_conf.symfs, dso->long_name); 65 break; 66 67 case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: 68 snprintf(filename, size, "%s/usr/lib/debug%s", 69 symbol_conf.symfs, dso->long_name); 70 break; 71 72 case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: 73 { 74 const char *last_slash; 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 82 len = scnprintf(filename, size, "%s", symbol_conf.symfs); 83 dir_size = last_slash - dso->long_name + 2; 84 if (dir_size > (size - len)) { 85 ret = -1; 86 break; 87 } 88 len += scnprintf(filename + len, dir_size, "%s", dso->long_name); 89 len += scnprintf(filename + len , size - len, ".debug%s", 90 last_slash); 91 break; 92 } 93 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); 103 snprintf(filename, size, 104 "%s/usr/lib/debug/.build-id/%.2s/%s.debug", 105 symbol_conf.symfs, build_id_hex, build_id_hex + 2); 106 break; 107 108 case DSO_BINARY_TYPE__VMLINUX: 109 case DSO_BINARY_TYPE__GUEST_VMLINUX: 110 case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: 111 snprintf(filename, size, "%s%s", 112 symbol_conf.symfs, dso->long_name); 113 break; 114 115 case DSO_BINARY_TYPE__GUEST_KMODULE: 116 snprintf(filename, size, "%s%s%s", symbol_conf.symfs, 117 root_dir, dso->long_name); 118 break; 119 120 case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: 121 snprintf(filename, size, "%s%s", symbol_conf.symfs, 122 dso->long_name); 123 break; 124 125 case DSO_BINARY_TYPE__KCORE: 126 case DSO_BINARY_TYPE__GUEST_KCORE: 127 snprintf(filename, size, "%s", dso->long_name); 128 break; 129 130 default: 131 case DSO_BINARY_TYPE__KALLSYMS: 132 case DSO_BINARY_TYPE__GUEST_KALLSYMS: 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 } 141 142 /* 143 * Global list of open DSOs and the counter. 144 */ 145 static LIST_HEAD(dso__data_open); 146 static long dso__data_open_cnt; 147 148 static void dso__list_add(struct dso *dso) 149 { 150 list_add_tail(&dso->data.open_entry, &dso__data_open); 151 dso__data_open_cnt++; 152 } 153 154 static void dso__list_del(struct dso *dso) 155 { 156 list_del(&dso->data.open_entry); 157 WARN_ONCE(dso__data_open_cnt <= 0, 158 "DSO data fd counter out of bounds."); 159 dso__data_open_cnt--; 160 } 161 162 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 } 182 183 static int __open_dso(struct dso *dso, struct machine *machine) 184 { 185 int fd; 186 char *root_dir = (char *)""; 187 char *name = malloc(PATH_MAX); 188 189 if (!name) 190 return -ENOMEM; 191 192 if (machine) 193 root_dir = machine->root_dir; 194 195 if (dso__read_binary_type_filename(dso, dso->binary_type, 196 root_dir, name, PATH_MAX)) { 197 free(name); 198 return -EINVAL; 199 } 200 201 fd = do_open(name); 202 free(name); 203 return fd; 204 } 205 206 static void check_data_close(void); 207 208 /** 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 */ 215 static int open_dso(struct dso *dso, struct machine *machine) 216 { 217 int fd = __open_dso(dso, machine); 218 219 if (fd >= 0) { 220 dso__list_add(dso); 221 /* 222 * Check if we crossed the allowed number 223 * of opened DSOs and close one if needed. 224 */ 225 check_data_close(); 226 } 227 228 return fd; 229 } 230 231 static void close_data_fd(struct dso *dso) 232 { 233 if (dso->data.fd >= 0) { 234 close(dso->data.fd); 235 dso->data.fd = -1; 236 dso->data.file_size = 0; 237 dso__list_del(dso); 238 } 239 } 240 241 /** 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 */ 248 static void close_dso(struct dso *dso) 249 { 250 close_data_fd(dso); 251 } 252 253 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 } 292 293 /* 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 */ 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 } 305 306 /** 307 * dso__data_close - Close DSO data file 308 * @dso: dso object 309 * 310 * External interface to close @dso's data file descriptor. 311 */ 312 void dso__data_close(struct dso *dso) 313 { 314 close_dso(dso); 315 } 316 317 /** 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 */ 325 int dso__data_fd(struct dso *dso, struct machine *machine) 326 { 327 enum dso_binary_type binary_type_data[] = { 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; 333 334 if (dso->data.status == DSO_DATA_STATUS_ERROR) 335 return -1; 336 337 if (dso->data.fd >= 0) 338 goto out; 339 340 if (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND) { 341 dso->data.fd = open_dso(dso, machine); 342 goto out; 343 } 344 345 do { 346 dso->binary_type = binary_type_data[i++]; 347 348 dso->data.fd = open_dso(dso, machine); 349 if (dso->data.fd >= 0) 350 goto out; 351 352 } while (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND); 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; 358 359 return dso->data.fd; 360 } 361 362 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 } 373 374 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 } 388 389 static struct dso_cache *dso_cache__find(const struct rb_root *root, u64 offset) 390 { 391 struct rb_node * const *p = &root->rb_node; 392 const struct rb_node *parent = NULL; 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 449 dso_cache__read(struct dso *dso, u64 offset, u8 *data, ssize_t size) 450 { 451 struct dso_cache *cache; 452 ssize_t ret; 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; 465 466 if (-1 == lseek(dso->data.fd, cache_offset, SEEK_SET)) 467 break; 468 469 ret = read(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE); 470 if (ret <= 0) 471 break; 472 473 cache->offset = cache_offset; 474 cache->size = ret; 475 dso_cache__insert(&dso->data.cache, cache); 476 477 ret = dso_cache__memcpy(cache, offset, data, size); 478 479 } while (0); 480 481 if (ret <= 0) 482 free(cache); 483 484 return ret; 485 } 486 487 static ssize_t dso_cache_read(struct dso *dso, u64 offset, 488 u8 *data, ssize_t size) 489 { 490 struct dso_cache *cache; 491 492 cache = dso_cache__find(&dso->data.cache, offset); 493 if (cache) 494 return dso_cache__memcpy(cache, offset, data, size); 495 else 496 return dso_cache__read(dso, offset, data, size); 497 } 498 499 /* 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 */ 504 static ssize_t cached_read(struct dso *dso, u64 offset, u8 *data, ssize_t size) 505 { 506 ssize_t r = 0; 507 u8 *p = data; 508 509 do { 510 ssize_t ret; 511 512 ret = dso_cache_read(dso, offset, p, size); 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 } 531 532 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 } 546 547 /** 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 } 568 569 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 } 584 585 /** 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 */ 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 } 604 605 /** 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 */ 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) { 647 dso__set_short_name(dso, short_name, false); 648 dso->kernel = dso_type; 649 } 650 651 return dso; 652 } 653 654 void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated) 655 { 656 if (name == NULL) 657 return; 658 659 if (dso->long_name_allocated) 660 free((char *)dso->long_name); 661 662 dso->long_name = name; 663 dso->long_name_len = strlen(name); 664 dso->long_name_allocated = name_allocated; 665 } 666 667 void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated) 668 { 669 if (name == NULL) 670 return; 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; 678 } 679 680 static void dso__set_basename(struct dso *dso) 681 { 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); 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); 738 dso__set_long_name(dso, dso->name, false); 739 dso__set_short_name(dso, dso->name, false); 740 for (i = 0; i < MAP__NR_TYPES; ++i) 741 dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; 742 dso->data.cache = RB_ROOT; 743 dso->data.fd = -1; 744 dso->data.status = DSO_DATA_STATUS_UNKNOWN; 745 dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; 746 dso->binary_type = DSO_BINARY_TYPE__NOT_FOUND; 747 dso->is_64_bit = (sizeof(void *) == 8); 748 dso->loaded = 0; 749 dso->rel = 0; 750 dso->sorted_by_name = 0; 751 dso->has_build_id = 0; 752 dso->has_srcline = 1; 753 dso->a2l_fails = 1; 754 dso->kernel = DSO_TYPE_USER; 755 dso->needs_swap = DSO_SWAP__UNSET; 756 INIT_LIST_HEAD(&dso->node); 757 INIT_LIST_HEAD(&dso->data.open_entry); 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]); 768 769 if (dso->short_name_allocated) { 770 zfree((char **)&dso->short_name); 771 dso->short_name_allocated = false; 772 } 773 774 if (dso->long_name_allocated) { 775 zfree((char **)&dso->long_name); 776 dso->long_name_allocated = false; 777 } 778 779 dso__data_close(dso); 780 dso_cache__free(&dso->data.cache); 781 dso__free_a2l(dso); 782 zfree(&dso->symsrc_filename); 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 } 856 857 struct dso *dsos__find(const struct list_head *head, const char *name, bool cmp_short) 858 { 859 struct dso *pos; 860 861 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 } 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 { 875 struct dso *dso = dsos__find(head, name, false); 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, 889 bool (skip)(struct dso *dso, int parm), int parm) 890 { 891 struct dso *pos; 892 size_t ret = 0; 893 894 list_for_each_entry(pos, head, node) { 895 if (skip && skip(pos, parm)) 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], 933 dso__loaded(dso, type) ? "" : "NOT "); 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 } 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 } 954