1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_DSO 3 #define __PERF_DSO 4 5 #include <linux/refcount.h> 6 #include <linux/types.h> 7 #include <linux/rbtree.h> 8 #include <sys/types.h> 9 #include <stdbool.h> 10 #include <stdio.h> 11 #include <linux/bitops.h> 12 #include "build-id.h" 13 #include "mutex.h" 14 #include <internal/rc_check.h> 15 16 struct machine; 17 struct map; 18 struct perf_env; 19 20 #define DSO__NAME_KALLSYMS "[kernel.kallsyms]" 21 #define DSO__NAME_KCORE "[kernel.kcore]" 22 23 enum dso_binary_type { 24 DSO_BINARY_TYPE__KALLSYMS = 0, 25 DSO_BINARY_TYPE__GUEST_KALLSYMS, 26 DSO_BINARY_TYPE__VMLINUX, 27 DSO_BINARY_TYPE__GUEST_VMLINUX, 28 DSO_BINARY_TYPE__JAVA_JIT, 29 DSO_BINARY_TYPE__DEBUGLINK, 30 DSO_BINARY_TYPE__BUILD_ID_CACHE, 31 DSO_BINARY_TYPE__BUILD_ID_CACHE_DEBUGINFO, 32 DSO_BINARY_TYPE__FEDORA_DEBUGINFO, 33 DSO_BINARY_TYPE__UBUNTU_DEBUGINFO, 34 DSO_BINARY_TYPE__MIXEDUP_UBUNTU_DEBUGINFO, 35 DSO_BINARY_TYPE__BUILDID_DEBUGINFO, 36 DSO_BINARY_TYPE__SYSTEM_PATH_DSO, 37 DSO_BINARY_TYPE__GUEST_KMODULE, 38 DSO_BINARY_TYPE__GUEST_KMODULE_COMP, 39 DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE, 40 DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP, 41 DSO_BINARY_TYPE__KCORE, 42 DSO_BINARY_TYPE__GUEST_KCORE, 43 DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO, 44 DSO_BINARY_TYPE__BPF_PROG_INFO, 45 DSO_BINARY_TYPE__BPF_IMAGE, 46 DSO_BINARY_TYPE__OOL, 47 DSO_BINARY_TYPE__NOT_FOUND, 48 }; 49 50 enum dso_space_type { 51 DSO_SPACE__USER = 0, 52 DSO_SPACE__KERNEL, 53 DSO_SPACE__KERNEL_GUEST 54 }; 55 56 enum dso_swap_type { 57 DSO_SWAP__UNSET, 58 DSO_SWAP__NO, 59 DSO_SWAP__YES, 60 }; 61 62 enum dso_data_status { 63 DSO_DATA_STATUS_ERROR = -1, 64 DSO_DATA_STATUS_UNKNOWN = 0, 65 DSO_DATA_STATUS_OK = 1, 66 }; 67 68 enum dso_data_status_seen { 69 DSO_DATA_STATUS_SEEN_ITRACE, 70 }; 71 72 enum dso_type { 73 DSO__TYPE_UNKNOWN, 74 DSO__TYPE_64BIT, 75 DSO__TYPE_32BIT, 76 DSO__TYPE_X32BIT, 77 }; 78 79 enum dso_load_errno { 80 DSO_LOAD_ERRNO__SUCCESS = 0, 81 82 /* 83 * Choose an arbitrary negative big number not to clash with standard 84 * errno since SUS requires the errno has distinct positive values. 85 * See 'Issue 6' in the link below. 86 * 87 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html 88 */ 89 __DSO_LOAD_ERRNO__START = -10000, 90 91 DSO_LOAD_ERRNO__INTERNAL_ERROR = __DSO_LOAD_ERRNO__START, 92 93 /* for symsrc__init() */ 94 DSO_LOAD_ERRNO__INVALID_ELF, 95 DSO_LOAD_ERRNO__CANNOT_READ_BUILDID, 96 DSO_LOAD_ERRNO__MISMATCHING_BUILDID, 97 98 /* for decompress_kmodule */ 99 DSO_LOAD_ERRNO__DECOMPRESSION_FAILURE, 100 101 __DSO_LOAD_ERRNO__END, 102 }; 103 104 #define DSO__SWAP(dso, type, val) \ 105 ({ \ 106 type ____r = val; \ 107 enum dso_swap_type ___dst = dso__needs_swap(dso); \ 108 BUG_ON(___dst == DSO_SWAP__UNSET); \ 109 if (___dst == DSO_SWAP__YES) { \ 110 switch (sizeof(____r)) { \ 111 case 2: \ 112 ____r = bswap_16(val); \ 113 break; \ 114 case 4: \ 115 ____r = bswap_32(val); \ 116 break; \ 117 case 8: \ 118 ____r = bswap_64(val); \ 119 break; \ 120 default: \ 121 BUG_ON(1); \ 122 } \ 123 } \ 124 ____r; \ 125 }) 126 127 #define DSO__DATA_CACHE_SIZE 4096 128 #define DSO__DATA_CACHE_MASK ~(DSO__DATA_CACHE_SIZE - 1) 129 130 /* 131 * Data about backing storage DSO, comes from PERF_RECORD_MMAP2 meta events 132 */ 133 struct dso_id { 134 u32 maj; 135 u32 min; 136 u64 ino; 137 u64 ino_generation; 138 }; 139 140 struct dso_cache { 141 struct rb_node rb_node; 142 u64 offset; 143 u64 size; 144 char data[]; 145 }; 146 147 struct dso_data { 148 struct rb_root cache; 149 struct list_head open_entry; 150 #ifdef REFCNT_CHECKING 151 struct dso *dso; 152 #endif 153 int fd; 154 int status; 155 u32 status_seen; 156 u64 file_size; 157 u64 elf_base_addr; 158 u64 debug_frame_offset; 159 u64 eh_frame_hdr_addr; 160 u64 eh_frame_hdr_offset; 161 }; 162 163 struct dso_bpf_prog { 164 u32 id; 165 u32 sub_id; 166 struct perf_env *env; 167 }; 168 169 struct auxtrace_cache; 170 171 DECLARE_RC_STRUCT(dso) { 172 struct mutex lock; 173 struct dsos *dsos; 174 struct rb_root_cached symbols; 175 struct symbol **symbol_names; 176 size_t symbol_names_len; 177 struct rb_root_cached inlined_nodes; 178 struct rb_root_cached srclines; 179 struct rb_root data_types; 180 struct rb_root global_vars; 181 182 struct { 183 u64 addr; 184 struct symbol *symbol; 185 } last_find_result; 186 struct build_id bid; 187 u64 text_offset; 188 u64 text_end; 189 const char *short_name; 190 const char *long_name; 191 void *a2l; 192 char *symsrc_filename; 193 #if defined(__powerpc__) 194 void *dwfl; /* DWARF debug info */ 195 #endif 196 struct nsinfo *nsinfo; 197 struct auxtrace_cache *auxtrace_cache; 198 union { /* Tool specific area */ 199 void *priv; 200 u64 db_id; 201 }; 202 /* bpf prog information */ 203 struct dso_bpf_prog bpf_prog; 204 /* dso data file */ 205 struct dso_data data; 206 struct dso_id id; 207 unsigned int a2l_fails; 208 int comp; 209 refcount_t refcnt; 210 enum dso_load_errno load_errno; 211 u16 long_name_len; 212 u16 short_name_len; 213 enum dso_binary_type symtab_type:8; 214 enum dso_binary_type binary_type:8; 215 enum dso_space_type kernel:2; 216 enum dso_swap_type needs_swap:2; 217 bool is_kmod:1; 218 u8 adjust_symbols:1; 219 u8 has_build_id:1; 220 u8 header_build_id:1; 221 u8 has_srcline:1; 222 u8 hit:1; 223 u8 annotate_warned:1; 224 u8 auxtrace_warned:1; 225 u8 short_name_allocated:1; 226 u8 long_name_allocated:1; 227 u8 is_64_bit:1; 228 bool sorted_by_name; 229 bool loaded; 230 u8 rel; 231 char name[]; 232 }; 233 234 /* dso__for_each_symbol - iterate over the symbols of given type 235 * 236 * @dso: the 'struct dso *' in which symbols are iterated 237 * @pos: the 'struct symbol *' to use as a loop cursor 238 * @n: the 'struct rb_node *' to use as a temporary storage 239 */ 240 #define dso__for_each_symbol(dso, pos, n) \ 241 symbols__for_each_entry(dso__symbols(dso), pos, n) 242 243 static inline void *dso__a2l(const struct dso *dso) 244 { 245 return RC_CHK_ACCESS(dso)->a2l; 246 } 247 248 static inline void dso__set_a2l(struct dso *dso, void *val) 249 { 250 RC_CHK_ACCESS(dso)->a2l = val; 251 } 252 253 static inline unsigned int dso__a2l_fails(const struct dso *dso) 254 { 255 return RC_CHK_ACCESS(dso)->a2l_fails; 256 } 257 258 static inline void dso__set_a2l_fails(struct dso *dso, unsigned int val) 259 { 260 RC_CHK_ACCESS(dso)->a2l_fails = val; 261 } 262 263 static inline bool dso__adjust_symbols(const struct dso *dso) 264 { 265 return RC_CHK_ACCESS(dso)->adjust_symbols; 266 } 267 268 static inline void dso__set_adjust_symbols(struct dso *dso, bool val) 269 { 270 RC_CHK_ACCESS(dso)->adjust_symbols = val; 271 } 272 273 static inline bool dso__annotate_warned(const struct dso *dso) 274 { 275 return RC_CHK_ACCESS(dso)->annotate_warned; 276 } 277 278 static inline void dso__set_annotate_warned(struct dso *dso) 279 { 280 RC_CHK_ACCESS(dso)->annotate_warned = 1; 281 } 282 283 static inline struct auxtrace_cache *dso__auxtrace_cache(struct dso *dso) 284 { 285 return RC_CHK_ACCESS(dso)->auxtrace_cache; 286 } 287 288 static inline void dso__set_auxtrace_cache(struct dso *dso, struct auxtrace_cache *cache) 289 { 290 RC_CHK_ACCESS(dso)->auxtrace_cache = cache; 291 } 292 293 static inline struct build_id *dso__bid(struct dso *dso) 294 { 295 return &RC_CHK_ACCESS(dso)->bid; 296 } 297 298 static inline const struct build_id *dso__bid_const(const struct dso *dso) 299 { 300 return &RC_CHK_ACCESS(dso)->bid; 301 } 302 303 static inline struct dso_bpf_prog *dso__bpf_prog(struct dso *dso) 304 { 305 return &RC_CHK_ACCESS(dso)->bpf_prog; 306 } 307 308 static inline bool dso__has_build_id(const struct dso *dso) 309 { 310 return RC_CHK_ACCESS(dso)->has_build_id; 311 } 312 313 static inline void dso__set_has_build_id(struct dso *dso) 314 { 315 RC_CHK_ACCESS(dso)->has_build_id = true; 316 } 317 318 static inline bool dso__has_srcline(const struct dso *dso) 319 { 320 return RC_CHK_ACCESS(dso)->has_srcline; 321 } 322 323 static inline void dso__set_has_srcline(struct dso *dso, bool val) 324 { 325 RC_CHK_ACCESS(dso)->has_srcline = val; 326 } 327 328 static inline int dso__comp(const struct dso *dso) 329 { 330 return RC_CHK_ACCESS(dso)->comp; 331 } 332 333 static inline void dso__set_comp(struct dso *dso, int comp) 334 { 335 RC_CHK_ACCESS(dso)->comp = comp; 336 } 337 338 static inline struct dso_data *dso__data(struct dso *dso) 339 { 340 return &RC_CHK_ACCESS(dso)->data; 341 } 342 343 static inline u64 dso__db_id(const struct dso *dso) 344 { 345 return RC_CHK_ACCESS(dso)->db_id; 346 } 347 348 static inline void dso__set_db_id(struct dso *dso, u64 db_id) 349 { 350 RC_CHK_ACCESS(dso)->db_id = db_id; 351 } 352 353 static inline struct dsos *dso__dsos(struct dso *dso) 354 { 355 return RC_CHK_ACCESS(dso)->dsos; 356 } 357 358 static inline void dso__set_dsos(struct dso *dso, struct dsos *dsos) 359 { 360 RC_CHK_ACCESS(dso)->dsos = dsos; 361 } 362 363 static inline bool dso__header_build_id(struct dso *dso) 364 { 365 return RC_CHK_ACCESS(dso)->header_build_id; 366 } 367 368 static inline void dso__set_header_build_id(struct dso *dso, bool val) 369 { 370 RC_CHK_ACCESS(dso)->header_build_id = val; 371 } 372 373 static inline bool dso__hit(const struct dso *dso) 374 { 375 return RC_CHK_ACCESS(dso)->hit; 376 } 377 378 static inline void dso__set_hit(struct dso *dso) 379 { 380 RC_CHK_ACCESS(dso)->hit = 1; 381 } 382 383 static inline struct dso_id *dso__id(struct dso *dso) 384 { 385 return &RC_CHK_ACCESS(dso)->id; 386 } 387 388 static inline const struct dso_id *dso__id_const(const struct dso *dso) 389 { 390 return &RC_CHK_ACCESS(dso)->id; 391 } 392 393 static inline struct rb_root_cached *dso__inlined_nodes(struct dso *dso) 394 { 395 return &RC_CHK_ACCESS(dso)->inlined_nodes; 396 } 397 398 static inline bool dso__is_64_bit(const struct dso *dso) 399 { 400 return RC_CHK_ACCESS(dso)->is_64_bit; 401 } 402 403 static inline void dso__set_is_64_bit(struct dso *dso, bool is) 404 { 405 RC_CHK_ACCESS(dso)->is_64_bit = is; 406 } 407 408 static inline bool dso__is_kmod(const struct dso *dso) 409 { 410 return RC_CHK_ACCESS(dso)->is_kmod; 411 } 412 413 static inline void dso__set_is_kmod(struct dso *dso) 414 { 415 RC_CHK_ACCESS(dso)->is_kmod = 1; 416 } 417 418 static inline enum dso_space_type dso__kernel(const struct dso *dso) 419 { 420 return RC_CHK_ACCESS(dso)->kernel; 421 } 422 423 static inline void dso__set_kernel(struct dso *dso, enum dso_space_type kernel) 424 { 425 RC_CHK_ACCESS(dso)->kernel = kernel; 426 } 427 428 static inline u64 dso__last_find_result_addr(const struct dso *dso) 429 { 430 return RC_CHK_ACCESS(dso)->last_find_result.addr; 431 } 432 433 static inline void dso__set_last_find_result_addr(struct dso *dso, u64 addr) 434 { 435 RC_CHK_ACCESS(dso)->last_find_result.addr = addr; 436 } 437 438 static inline struct symbol *dso__last_find_result_symbol(const struct dso *dso) 439 { 440 return RC_CHK_ACCESS(dso)->last_find_result.symbol; 441 } 442 443 static inline void dso__set_last_find_result_symbol(struct dso *dso, struct symbol *symbol) 444 { 445 RC_CHK_ACCESS(dso)->last_find_result.symbol = symbol; 446 } 447 448 static inline enum dso_load_errno *dso__load_errno(struct dso *dso) 449 { 450 return &RC_CHK_ACCESS(dso)->load_errno; 451 } 452 453 static inline void dso__set_loaded(struct dso *dso) 454 { 455 RC_CHK_ACCESS(dso)->loaded = true; 456 } 457 458 static inline struct mutex *dso__lock(struct dso *dso) 459 { 460 return &RC_CHK_ACCESS(dso)->lock; 461 } 462 463 static inline const char *dso__long_name(const struct dso *dso) 464 { 465 return RC_CHK_ACCESS(dso)->long_name; 466 } 467 468 static inline bool dso__long_name_allocated(const struct dso *dso) 469 { 470 return RC_CHK_ACCESS(dso)->long_name_allocated; 471 } 472 473 static inline void dso__set_long_name_allocated(struct dso *dso, bool allocated) 474 { 475 RC_CHK_ACCESS(dso)->long_name_allocated = allocated; 476 } 477 478 static inline u16 dso__long_name_len(const struct dso *dso) 479 { 480 return RC_CHK_ACCESS(dso)->long_name_len; 481 } 482 483 static inline const char *dso__name(const struct dso *dso) 484 { 485 return RC_CHK_ACCESS(dso)->name; 486 } 487 488 static inline enum dso_swap_type dso__needs_swap(const struct dso *dso) 489 { 490 return RC_CHK_ACCESS(dso)->needs_swap; 491 } 492 493 static inline void dso__set_needs_swap(struct dso *dso, enum dso_swap_type type) 494 { 495 RC_CHK_ACCESS(dso)->needs_swap = type; 496 } 497 498 static inline struct nsinfo *dso__nsinfo(struct dso *dso) 499 { 500 return RC_CHK_ACCESS(dso)->nsinfo; 501 } 502 503 static inline const struct nsinfo *dso__nsinfo_const(const struct dso *dso) 504 { 505 return RC_CHK_ACCESS(dso)->nsinfo; 506 } 507 508 static inline struct nsinfo **dso__nsinfo_ptr(struct dso *dso) 509 { 510 return &RC_CHK_ACCESS(dso)->nsinfo; 511 } 512 513 void dso__set_nsinfo(struct dso *dso, struct nsinfo *nsi); 514 515 static inline u8 dso__rel(const struct dso *dso) 516 { 517 return RC_CHK_ACCESS(dso)->rel; 518 } 519 520 static inline void dso__set_rel(struct dso *dso, u8 rel) 521 { 522 RC_CHK_ACCESS(dso)->rel = rel; 523 } 524 525 static inline const char *dso__short_name(const struct dso *dso) 526 { 527 return RC_CHK_ACCESS(dso)->short_name; 528 } 529 530 static inline bool dso__short_name_allocated(const struct dso *dso) 531 { 532 return RC_CHK_ACCESS(dso)->short_name_allocated; 533 } 534 535 static inline void dso__set_short_name_allocated(struct dso *dso, bool allocated) 536 { 537 RC_CHK_ACCESS(dso)->short_name_allocated = allocated; 538 } 539 540 static inline u16 dso__short_name_len(const struct dso *dso) 541 { 542 return RC_CHK_ACCESS(dso)->short_name_len; 543 } 544 545 static inline struct rb_root_cached *dso__srclines(struct dso *dso) 546 { 547 return &RC_CHK_ACCESS(dso)->srclines; 548 } 549 550 static inline struct rb_root *dso__data_types(struct dso *dso) 551 { 552 return &RC_CHK_ACCESS(dso)->data_types; 553 } 554 555 static inline struct rb_root *dso__global_vars(struct dso *dso) 556 { 557 return &RC_CHK_ACCESS(dso)->global_vars; 558 } 559 560 static inline struct rb_root_cached *dso__symbols(struct dso *dso) 561 { 562 return &RC_CHK_ACCESS(dso)->symbols; 563 } 564 565 static inline struct symbol **dso__symbol_names(struct dso *dso) 566 { 567 return RC_CHK_ACCESS(dso)->symbol_names; 568 } 569 570 static inline void dso__set_symbol_names(struct dso *dso, struct symbol **names) 571 { 572 RC_CHK_ACCESS(dso)->symbol_names = names; 573 } 574 575 static inline size_t dso__symbol_names_len(struct dso *dso) 576 { 577 return RC_CHK_ACCESS(dso)->symbol_names_len; 578 } 579 580 static inline void dso__set_symbol_names_len(struct dso *dso, size_t len) 581 { 582 RC_CHK_ACCESS(dso)->symbol_names_len = len; 583 } 584 585 static inline const char *dso__symsrc_filename(const struct dso *dso) 586 { 587 return RC_CHK_ACCESS(dso)->symsrc_filename; 588 } 589 590 static inline void dso__set_symsrc_filename(struct dso *dso, char *val) 591 { 592 RC_CHK_ACCESS(dso)->symsrc_filename = val; 593 } 594 595 static inline enum dso_binary_type dso__symtab_type(const struct dso *dso) 596 { 597 return RC_CHK_ACCESS(dso)->symtab_type; 598 } 599 600 static inline void dso__set_symtab_type(struct dso *dso, enum dso_binary_type bt) 601 { 602 RC_CHK_ACCESS(dso)->symtab_type = bt; 603 } 604 605 static inline u64 dso__text_end(const struct dso *dso) 606 { 607 return RC_CHK_ACCESS(dso)->text_end; 608 } 609 610 static inline void dso__set_text_end(struct dso *dso, u64 val) 611 { 612 RC_CHK_ACCESS(dso)->text_end = val; 613 } 614 615 static inline u64 dso__text_offset(const struct dso *dso) 616 { 617 return RC_CHK_ACCESS(dso)->text_offset; 618 } 619 620 static inline void dso__set_text_offset(struct dso *dso, u64 val) 621 { 622 RC_CHK_ACCESS(dso)->text_offset = val; 623 } 624 625 int dso_id__cmp(const struct dso_id *a, const struct dso_id *b); 626 bool dso_id__empty(const struct dso_id *id); 627 628 struct dso *dso__new_id(const char *name, struct dso_id *id); 629 struct dso *dso__new(const char *name); 630 void dso__delete(struct dso *dso); 631 632 int dso__cmp_id(struct dso *a, struct dso *b); 633 void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated); 634 void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated); 635 void __dso__inject_id(struct dso *dso, struct dso_id *id); 636 637 int dso__name_len(const struct dso *dso); 638 639 struct dso *dso__get(struct dso *dso); 640 void dso__put(struct dso *dso); 641 642 static inline void __dso__zput(struct dso **dso) 643 { 644 dso__put(*dso); 645 *dso = NULL; 646 } 647 648 #define dso__zput(dso) __dso__zput(&dso) 649 650 bool dso__loaded(const struct dso *dso); 651 652 static inline bool dso__has_symbols(const struct dso *dso) 653 { 654 return !RB_EMPTY_ROOT(&RC_CHK_ACCESS(dso)->symbols.rb_root); 655 } 656 657 char *dso__filename_with_chroot(const struct dso *dso, const char *filename); 658 659 bool dso__sorted_by_name(const struct dso *dso); 660 void dso__set_sorted_by_name(struct dso *dso); 661 void dso__sort_by_name(struct dso *dso); 662 663 void dso__set_build_id(struct dso *dso, struct build_id *bid); 664 bool dso__build_id_equal(const struct dso *dso, struct build_id *bid); 665 void dso__read_running_kernel_build_id(struct dso *dso, 666 struct machine *machine); 667 int dso__kernel_module_get_build_id(struct dso *dso, const char *root_dir); 668 669 char dso__symtab_origin(const struct dso *dso); 670 int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type type, 671 char *root_dir, char *filename, size_t size); 672 bool is_kernel_module(const char *pathname, int cpumode); 673 bool dso__needs_decompress(struct dso *dso); 674 int dso__decompress_kmodule_fd(struct dso *dso, const char *name); 675 int dso__decompress_kmodule_path(struct dso *dso, const char *name, 676 char *pathname, size_t len); 677 int filename__decompress(const char *name, char *pathname, 678 size_t len, int comp, int *err); 679 680 #define KMOD_DECOMP_NAME "/tmp/perf-kmod-XXXXXX" 681 #define KMOD_DECOMP_LEN sizeof(KMOD_DECOMP_NAME) 682 683 struct kmod_path { 684 char *name; 685 int comp; 686 bool kmod; 687 }; 688 689 int __kmod_path__parse(struct kmod_path *m, const char *path, 690 bool alloc_name); 691 692 #define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false) 693 #define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true) 694 695 void dso__set_module_info(struct dso *dso, struct kmod_path *m, 696 struct machine *machine); 697 698 /* 699 * The dso__data_* external interface provides following functions: 700 * dso__data_get_fd 701 * dso__data_put_fd 702 * dso__data_close 703 * dso__data_size 704 * dso__data_read_offset 705 * dso__data_read_addr 706 * dso__data_write_cache_offs 707 * dso__data_write_cache_addr 708 * 709 * Please refer to the dso.c object code for each function and 710 * arguments documentation. Following text tries to explain the 711 * dso file descriptor caching. 712 * 713 * The dso__data* interface allows caching of opened file descriptors 714 * to speed up the dso data accesses. The idea is to leave the file 715 * descriptor opened ideally for the whole life of the dso object. 716 * 717 * The current usage of the dso__data_* interface is as follows: 718 * 719 * Get DSO's fd: 720 * int fd = dso__data_get_fd(dso, machine); 721 * if (fd >= 0) { 722 * USE 'fd' SOMEHOW 723 * dso__data_put_fd(dso); 724 * } 725 * 726 * Read DSO's data: 727 * n = dso__data_read_offset(dso_0, &machine, 0, buf, BUFSIZE); 728 * n = dso__data_read_addr(dso_0, &machine, 0, buf, BUFSIZE); 729 * 730 * Eventually close DSO's fd: 731 * dso__data_close(dso); 732 * 733 * It is not necessary to close the DSO object data file. Each time new 734 * DSO data file is opened, the limit (RLIMIT_NOFILE/2) is checked. Once 735 * it is crossed, the oldest opened DSO object is closed. 736 * 737 * The dso__delete function calls close_dso function to ensure the 738 * data file descriptor gets closed/unmapped before the dso object 739 * is freed. 740 * 741 * TODO 742 */ 743 int dso__data_get_fd(struct dso *dso, struct machine *machine); 744 void dso__data_put_fd(struct dso *dso); 745 void dso__data_close(struct dso *dso); 746 747 int dso__data_file_size(struct dso *dso, struct machine *machine); 748 off_t dso__data_size(struct dso *dso, struct machine *machine); 749 ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine, 750 u64 offset, u8 *data, ssize_t size); 751 ssize_t dso__data_read_addr(struct dso *dso, struct map *map, 752 struct machine *machine, u64 addr, 753 u8 *data, ssize_t size); 754 bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by); 755 ssize_t dso__data_write_cache_offs(struct dso *dso, struct machine *machine, 756 u64 offset, const u8 *data, ssize_t size); 757 ssize_t dso__data_write_cache_addr(struct dso *dso, struct map *map, 758 struct machine *machine, u64 addr, 759 const u8 *data, ssize_t size); 760 761 struct map *dso__new_map(const char *name); 762 struct dso *machine__findnew_kernel(struct machine *machine, const char *name, 763 const char *short_name, int dso_type); 764 765 void dso__reset_find_symbol_cache(struct dso *dso); 766 767 size_t dso__fprintf_symbols_by_name(struct dso *dso, FILE *fp); 768 size_t dso__fprintf(struct dso *dso, FILE *fp); 769 770 static inline enum dso_binary_type dso__binary_type(const struct dso *dso) 771 { 772 return RC_CHK_ACCESS(dso)->binary_type; 773 } 774 775 static inline void dso__set_binary_type(struct dso *dso, enum dso_binary_type bt) 776 { 777 RC_CHK_ACCESS(dso)->binary_type = bt; 778 } 779 780 static inline bool dso__is_vmlinux(const struct dso *dso) 781 { 782 enum dso_binary_type bt = dso__binary_type(dso); 783 784 return bt == DSO_BINARY_TYPE__VMLINUX || bt == DSO_BINARY_TYPE__GUEST_VMLINUX; 785 } 786 787 static inline bool dso__is_kcore(const struct dso *dso) 788 { 789 enum dso_binary_type bt = dso__binary_type(dso); 790 791 return bt == DSO_BINARY_TYPE__KCORE || bt == DSO_BINARY_TYPE__GUEST_KCORE; 792 } 793 794 static inline bool dso__is_kallsyms(const struct dso *dso) 795 { 796 return RC_CHK_ACCESS(dso)->kernel && RC_CHK_ACCESS(dso)->long_name[0] != '/'; 797 } 798 799 bool dso__is_object_file(const struct dso *dso); 800 801 void dso__free_a2l(struct dso *dso); 802 803 enum dso_type dso__type(struct dso *dso, struct machine *machine); 804 805 int dso__strerror_load(struct dso *dso, char *buf, size_t buflen); 806 807 void reset_fd_limit(void); 808 809 u64 dso__find_global_type(struct dso *dso, u64 addr); 810 u64 dso__findnew_global_type(struct dso *dso, u64 addr, u64 offset); 811 812 #endif /* __PERF_DSO */ 813