lib/bpf/elf.c

25 int elf_open(const char *binary_path, struct elf_fd *elf_fd)
32 		pr_warn("elf: failed to init libelf for %s\n", binary_path);
35 	fd = open(binary_path, O_RDONLY | O_CLOEXEC);
38 		pr_warn("elf: failed to open %s: %s\n", binary_path,
44 		pr_warn("elf: could not read elf from %s: %s\n", binary_path, elf_errmsg(-1));
97 			    Elf *elf, const char *binary_path,
107 		pr_warn("elf: failed to get ehdr from %s: %s\n", binary_path, elf_errmsg(-1));
114 			 binary_path);
125 			binary_path, elf_errmsg(-1));
147 		pr_warn("elf: failed to get verdef ELF section in '%s'\n", binary_path);
271 /* Find offset of function name in the provided ELF object. "binary_path" is
276 long elf_find_func_offset(Elf *elf, const char *binary_path, const char *name)
286 		pr_warn("elf: failed to get ehdr from %s: %s\n", binary_path, elf_errmsg(-1));
317 		ret = elf_sym_iter_new(&iter, elf, binary_path, sh_types[i], STT_FUNC);
337 						sym->name, name, binary_path);
356 		pr_debug("elf: symbol address match for '%s' in '%s': 0x%lx\n", name, binary_path,
360 			pr_warn("elf: '%s' is 0 in symtab for '%s': %s\n", name, binary_path,
365 			pr_warn("elf: failed to find symbol '%s' in '%s'\n", name, binary_path);
375 long elf_find_func_offset_from_file(const char *binary_path, const char *name)
380 	ret = elf_open(binary_path, &elf_fd);
383 	ret = elf_find_func_offset(elf_fd.elf, binary_path, name);
407 int elf_resolve_syms_offsets(const char *binary_path, int cnt,
417 	err = elf_open(binary_path, &elf_fd);
440 		err = elf_sym_iter_new(&iter, elf_fd.elf, binary_path, sh_types[i], st_type);
467 						sym->name, sym_offset, binary_path, *offset);
504 int elf_resolve_pattern_offsets(const char *binary_path, const char *pattern,
513 	err = elf_open(binary_path, &elf_fd);
521 		err = elf_sym_iter_new(&iter, elf_fd.elf, binary_path, sh_types[i], STT_FUNC);