456 static int get_ksymbol_arch(struct kallsym_iter *iter)  in get_ksymbol_arch()  argument
458 	int ret = arch_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_arch()
459 				   &iter->value, &iter->type,  in get_ksymbol_arch()
460 				   iter->name);  in get_ksymbol_arch()
463 		iter->pos_arch_end = iter->pos;  in get_ksymbol_arch()
470 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
472 	int ret = module_get_kallsym(iter->pos - iter->pos_arch_end,  in get_ksymbol_mod()
473 				     &iter->value, &iter->type,  in get_ksymbol_mod()
474 				     iter->name, iter->module_name,  in get_ksymbol_mod()
475 				     &iter->exported);  in get_ksymbol_mod()
477 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
484 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
486 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
487 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
488 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
489 					 &iter->exported);  in get_ksymbol_ftrace_mod()
491 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
498 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
500 	strlcpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
501 	iter->exported = 0;  in get_ksymbol_bpf()
502 	return bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
503 			       &iter->value, &iter->type,  in get_ksymbol_bpf()
504 			       iter->name) < 0 ? 0 : 1;  in get_ksymbol_bpf()
508 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
510 	unsigned off = iter->nameoff;  in get_ksymbol_core()
512 	iter->module_name[0] = '\0';  in get_ksymbol_core()
513 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
515 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
517 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
519 	return off - iter->nameoff;  in get_ksymbol_core()
522 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
524 	iter->name[0] = '\0';  in reset_iter()
525 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
526 	iter->pos = new_pos;  in reset_iter()
528 		iter->pos_arch_end = 0;  in reset_iter()
529 		iter->pos_mod_end = 0;  in reset_iter()
530 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
539 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
541 	iter->pos = pos;  in update_iter_mod()
543 	if ((!iter->pos_arch_end || iter->pos_arch_end > pos) &&  in update_iter_mod()
544 	    get_ksymbol_arch(iter))  in update_iter_mod()
547 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
548 	    get_ksymbol_mod(iter))  in update_iter_mod()
551 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
552 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
555 	return get_ksymbol_bpf(iter);  in update_iter_mod()
559 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
563 		return update_iter_mod(iter, pos);  in update_iter()
566 	if (pos != iter->pos)  in update_iter()
567 		reset_iter(iter, pos);  in update_iter()
569 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
570 	iter->pos++;  in update_iter()
598 	struct kallsym_iter *iter = m->private;  in s_show()  local
601 	if (!iter->name[0])  in s_show()
604 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
606 	if (iter->module_name[0]) {  in s_show()
613 		type = iter->exported ? toupper(iter->type) :  in s_show()
614 					tolower(iter->type);  in s_show()
616 			   type, iter->name, iter->module_name);  in s_show()
619 			   iter->type, iter->name);  in s_show()
671 	struct kallsym_iter *iter;  in kallsyms_open()  local
672 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
673 	if (!iter)  in kallsyms_open()
675 	reset_iter(iter, 0);  in kallsyms_open()
677 	iter->show_value = kallsyms_show_value();  in kallsyms_open()