332 static void *sym_get_data_by_offset(const struct elf_info *info,  in sym_get_data_by_offset()  argument
335 	Elf_Shdr *sechdr = &info->sechdrs[secindex];  in sym_get_data_by_offset()
337 	if (info->hdr->e_type != ET_REL)  in sym_get_data_by_offset()
340 	return (void *)info->hdr + sechdr->sh_offset + offset;  in sym_get_data_by_offset()
343 static void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym)  in sym_get_data()  argument
345 	return sym_get_data_by_offset(info, get_secindex(info, sym),  in sym_get_data()
349 static const char *sech_name(const struct elf_info *info, Elf_Shdr *sechdr)  in sech_name()  argument
351 	return sym_get_data_by_offset(info, info->secindex_strings,  in sech_name()
355 static const char *sec_name(const struct elf_info *info, int secindex)  in sec_name()  argument
357 	return sech_name(info, &info->sechdrs[secindex]);  in sec_name()
384 static const char *namespace_from_kstrtabns(const struct elf_info *info,  in namespace_from_kstrtabns()  argument
387 	const char *value = sym_get_data(info, sym);  in namespace_from_kstrtabns()
475 static int parse_elf(struct elf_info *info, const char *filename)  in parse_elf()  argument
484 	hdr = grab_file(filename, &info->size);  in parse_elf()
494 	info->hdr = hdr;  in parse_elf()
495 	if (info->size < sizeof(*hdr)) {  in parse_elf()
522 	info->sechdrs = sechdrs;  in parse_elf()
525 	if (hdr->e_shoff > info->size) {  in parse_elf()
527 		      (unsigned long)hdr->e_shoff, filename, info->size);  in parse_elf()
536 		info->num_sections = TO_NATIVE(sechdrs[0].sh_size);  in parse_elf()
539 		info->num_sections = hdr->e_shnum;  in parse_elf()
542 		info->secindex_strings = TO_NATIVE(sechdrs[0].sh_link);  in parse_elf()
545 		info->secindex_strings = hdr->e_shstrndx;  in parse_elf()
549 	for (i = 0; i < info->num_sections; i++) {  in parse_elf()
562 	secstrings = (void *)hdr + sechdrs[info->secindex_strings].sh_offset;  in parse_elf()
563 	for (i = 1; i < info->num_sections; i++) {  in parse_elf()
567 		if (!nobits && sechdrs[i].sh_offset > info->size) {  in parse_elf()
578 			info->modinfo = (void *)hdr + sechdrs[i].sh_offset;  in parse_elf()
579 			info->modinfo_len = sechdrs[i].sh_size;  in parse_elf()
581 			info->export_sec = i;  in parse_elf()
583 			info->export_gpl_sec = i;  in parse_elf()
588 			info->symtab_start = (void *)hdr +  in parse_elf()
590 			info->symtab_stop  = (void *)hdr +  in parse_elf()
593 			info->strtab       = (void *)hdr +  in parse_elf()
600 			info->symtab_shndx_start = (void *)hdr +  in parse_elf()
602 			info->symtab_shndx_stop  = (void *)hdr +  in parse_elf()
606 	if (!info->symtab_start)  in parse_elf()
610 	for (sym = info->symtab_start; sym < info->symtab_stop; sym++) {  in parse_elf()
624 		for (p = info->symtab_shndx_start; p < info->symtab_shndx_stop;  in parse_elf()
632 static void parse_elf_finish(struct elf_info *info)  in parse_elf_finish()  argument
634 	release_file(info->hdr, info->size);  in parse_elf_finish()
637 static int ignore_undef_symbol(struct elf_info *info, const char *symname)  in ignore_undef_symbol()  argument
645 	if (info->hdr->e_machine == EM_PPC)  in ignore_undef_symbol()
654 	if (info->hdr->e_machine == EM_PPC64)  in ignore_undef_symbol()
667 			      const struct elf_info *info,  in handle_modversion()  argument
687 		crcp = sym_get_data(info, sym);  in handle_modversion()
693 static void handle_symbol(struct module *mod, struct elf_info *info,  in handle_symbol()  argument
700 		export = export_from_secname(info, get_secindex(info, sym));  in handle_symbol()
702 		export = export_from_sec(info, get_secindex(info, sym));  in handle_symbol()
716 		if (ignore_undef_symbol(info, symname))  in handle_symbol()
718 		if (info->hdr->e_machine == EM_SPARC ||  in handle_symbol()
719 		    info->hdr->e_machine == EM_SPARCV9) {  in handle_symbol()
770 static char *get_next_modinfo(struct elf_info *info, const char *tag,  in get_next_modinfo()  argument
775 	char *modinfo = info->modinfo;  in get_next_modinfo()
776 	unsigned long size = info->modinfo_len;  in get_next_modinfo()
790 static char *get_modinfo(struct elf_info *info, const char *tag)  in get_modinfo()  argument
793 	return get_next_modinfo(info, tag, NULL);  in get_modinfo()
1958 	struct elf_info info = { };  in read_symbols()  local
1961 	if (!parse_elf(&info, modname))  in read_symbols()
1978 		license = get_modinfo(&info, "license");  in read_symbols()
1988 			license = get_next_modinfo(&info, "license", license);  in read_symbols()
1991 		namespace = get_modinfo(&info, "import_ns");  in read_symbols()
1994 			namespace = get_next_modinfo(&info, "import_ns",  in read_symbols()
1999 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {  in read_symbols()
2000 		symname = remove_dot(info.strtab + sym->st_name);  in read_symbols()
2002 		handle_symbol(mod, &info, sym, symname);  in read_symbols()
2003 		handle_moddevtable(mod, &info, sym, symname);  in read_symbols()
2006 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {  in read_symbols()
2007 		symname = remove_dot(info.strtab + sym->st_name);  in read_symbols()
2012 					     namespace_from_kstrtabns(&info,  in read_symbols()
2016 			handle_modversion(mod, &info, sym,  in read_symbols()
2021 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {  in read_symbols()
2026 				find_symbol(remove_dot(info.strtab +  in read_symbols()
2034 	check_sec_ref(mod, modname, &info);  in read_symbols()
2037 		version = get_modinfo(&info, "version");  in read_symbols()
2043 	parse_elf_finish(&info);  in read_symbols()