457 static int get_ksymbol_arch(struct kallsym_iter *iter)  in get_ksymbol_arch()  argument
459 	int ret = arch_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_arch()
460 				   &iter->value, &iter->type,  in get_ksymbol_arch()
461 				   iter->name);  in get_ksymbol_arch()
464 		iter->pos_arch_end = iter->pos;  in get_ksymbol_arch()
471 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
473 	int ret = module_get_kallsym(iter->pos - iter->pos_arch_end,  in get_ksymbol_mod()
474 				     &iter->value, &iter->type,  in get_ksymbol_mod()
475 				     iter->name, iter->module_name,  in get_ksymbol_mod()
476 				     &iter->exported);  in get_ksymbol_mod()
478 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
490 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
492 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
493 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
494 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
495 					 &iter->exported);  in get_ksymbol_ftrace_mod()
497 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
504 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
508 	strlcpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
509 	iter->exported = 0;  in get_ksymbol_bpf()
510 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
511 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
512 			      iter->name);  in get_ksymbol_bpf()
514 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
526 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
528 	strlcpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
529 	iter->exported = 0;  in get_ksymbol_kprobe()
530 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
531 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
532 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
536 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
538 	unsigned off = iter->nameoff;  in get_ksymbol_core()
540 	iter->module_name[0] = '\0';  in get_ksymbol_core()
541 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
543 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
545 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
547 	return off - iter->nameoff;  in get_ksymbol_core()
550 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
552 	iter->name[0] = '\0';  in reset_iter()
553 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
554 	iter->pos = new_pos;  in reset_iter()
556 		iter->pos_arch_end = 0;  in reset_iter()
557 		iter->pos_mod_end = 0;  in reset_iter()
558 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
559 		iter->pos_bpf_end = 0;  in reset_iter()
568 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
570 	iter->pos = pos;  in update_iter_mod()
572 	if ((!iter->pos_arch_end || iter->pos_arch_end > pos) &&  in update_iter_mod()
573 	    get_ksymbol_arch(iter))  in update_iter_mod()
576 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
577 	    get_ksymbol_mod(iter))  in update_iter_mod()
580 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
581 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
584 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
585 	    get_ksymbol_bpf(iter))  in update_iter_mod()
588 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
592 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
596 		return update_iter_mod(iter, pos);  in update_iter()
599 	if (pos != iter->pos)  in update_iter()
600 		reset_iter(iter, pos);  in update_iter()
602 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
603 	iter->pos++;  in update_iter()
631 	struct kallsym_iter *iter = m->private;  in s_show()  local
634 	if (!iter->name[0])  in s_show()
637 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
639 	if (iter->module_name[0]) {  in s_show()
646 		type = iter->exported ? toupper(iter->type) :  in s_show()
647 					tolower(iter->type);  in s_show()
649 			   type, iter->name, iter->module_name);  in s_show()
652 			   iter->type, iter->name);  in s_show()
705 	struct kallsym_iter *iter;  in kallsyms_open()  local
706 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
707 	if (!iter)  in kallsyms_open()
709 	reset_iter(iter, 0);  in kallsyms_open()
715 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()