17 	Elf *elf;  in elf_open()  local
20 		pr_warn("elf: failed to init libelf for %s\n", binary_path);  in elf_open()
26 		pr_warn("elf: failed to open %s: %s\n", binary_path,  in elf_open()
30 	elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);  in elf_open()
31 	if (!elf) {  in elf_open()
32 		pr_warn("elf: could not read elf from %s: %s\n", binary_path, elf_errmsg(-1));  in elf_open()
37 	elf_fd->elf = elf;  in elf_open()
45 	elf_end(elf_fd->elf);  in elf_close()
49 /* Return next ELF section of sh_type after scn, or first of that type if scn is NULL. */
50 static Elf_Scn *elf_find_next_scn_by_type(Elf *elf, int sh_type, Elf_Scn *scn)  in elf_find_next_scn_by_type()  argument
52 	while ((scn = elf_nextscn(elf, scn)) != NULL) {  in elf_find_next_scn_by_type()
70 	Elf *elf;  member
80 			    Elf *elf, const char *binary_path,  in elf_sym_iter_new()  argument
89 	if (!gelf_getehdr(elf, &ehdr)) {  in elf_sym_iter_new()
90 		pr_warn("elf: failed to get ehdr from %s: %s\n", binary_path, elf_errmsg(-1));  in elf_sym_iter_new()
94 	scn = elf_find_next_scn_by_type(elf, sh_type, NULL);  in elf_sym_iter_new()
96 		pr_debug("elf: failed to find symbol table ELF sections in '%s'\n",  in elf_sym_iter_new()
107 		pr_warn("elf: failed to get symbols for symtab section in '%s': %s\n",  in elf_sym_iter_new()
112 	iter->elf = elf;  in elf_sym_iter_new()
130 		name = elf_strptr(iter->elf, iter->strtabidx, sym->st_name);  in elf_sym_iter_next()
133 		sym_scn = elf_getscn(iter->elf, sym->st_shndx);  in elf_sym_iter_next()
161 /* Find offset of function name in the provided ELF object. "binary_path" is
162  * the path to the ELF binary represented by "elf", and only used for error
166 long elf_find_func_offset(Elf *elf, const char *binary_path, const char *name)  in elf_find_func_offset()  argument
174 	if (!gelf_getehdr(elf, &ehdr)) {  in elf_find_func_offset()
175 		pr_warn("elf: failed to get ehdr from %s: %s\n", binary_path, elf_errmsg(-1));  in elf_find_func_offset()
197 		ret = elf_sym_iter_new(&iter, elf, binary_path, sh_types[i], STT_FUNC);  in elf_find_func_offset()
219 					pr_warn("elf: ambiguous match for '%s', '%s' in '%s'\n",  in elf_find_func_offset()
239 		pr_debug("elf: symbol address match for '%s' in '%s': 0x%lx\n", name, binary_path,  in elf_find_func_offset()
243 			pr_warn("elf: '%s' is 0 in symtab for '%s': %s\n", name, binary_path,  in elf_find_func_offset()
248 			pr_warn("elf: failed to find symbol '%s' in '%s'\n", name, binary_path);  in elf_find_func_offset()
255 /* Find offset of function name in ELF object specified by path. "name" matches
266 	ret = elf_find_func_offset(elf_fd.elf, binary_path, name);  in elf_find_func_offset_from_file()
322 		err = elf_sym_iter_new(&iter, elf_fd.elf, binary_path, sh_types[i], STT_FUNC);  in elf_resolve_syms_offsets()
348 					pr_warn("elf: ambiguous match found '%s@%lu' in '%s' previous offset %lu\n",  in elf_resolve_syms_offsets()
403 		err = elf_sym_iter_new(&iter, elf_fd.elf, binary_path, sh_types[i], STT_FUNC);  in elf_resolve_pattern_offsets()