627 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
629 	int ret = module_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_mod()
630 				     &iter->value, &iter->type,  in get_ksymbol_mod()
631 				     iter->name, iter->module_name,  in get_ksymbol_mod()
632 				     &iter->exported);  in get_ksymbol_mod()
634 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
646 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
648 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
649 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
650 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
651 					 &iter->exported);  in get_ksymbol_ftrace_mod()
653 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
660 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
664 	strscpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
665 	iter->exported = 0;  in get_ksymbol_bpf()
666 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
667 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
668 			      iter->name);  in get_ksymbol_bpf()
670 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
682 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
684 	strscpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
685 	iter->exported = 0;  in get_ksymbol_kprobe()
686 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
687 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
688 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
692 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
694 	unsigned off = iter->nameoff;  in get_ksymbol_core()
696 	iter->module_name[0] = '\0';  in get_ksymbol_core()
697 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
699 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
701 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
703 	return off - iter->nameoff;  in get_ksymbol_core()
706 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
708 	iter->name[0] = '\0';  in reset_iter()
709 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
710 	iter->pos = new_pos;  in reset_iter()
712 		iter->pos_mod_end = 0;  in reset_iter()
713 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
714 		iter->pos_bpf_end = 0;  in reset_iter()
723 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
725 	iter->pos = pos;  in update_iter_mod()
727 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
728 	    get_ksymbol_mod(iter))  in update_iter_mod()
731 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
732 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
735 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
736 	    get_ksymbol_bpf(iter))  in update_iter_mod()
739 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
743 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
747 		return update_iter_mod(iter, pos);  in update_iter()
750 	if (pos != iter->pos)  in update_iter()
751 		reset_iter(iter, pos);  in update_iter()
753 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
754 	iter->pos++;  in update_iter()
782 	struct kallsym_iter *iter = m->private;  in s_show()  local
785 	if (!iter->name[0])  in s_show()
788 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
790 	if (iter->module_name[0]) {  in s_show()
797 		type = iter->exported ? toupper(iter->type) :  in s_show()
798 					tolower(iter->type);  in s_show()
800 			   type, iter->name, iter->module_name);  in s_show()
803 			   iter->type, iter->name);  in s_show()
859 	struct kallsym_iter *iter = priv_data;  in bpf_iter_ksym_init()  local
861 	reset_iter(iter, 0);  in bpf_iter_ksym_init()
866 	iter->show_value = kallsyms_show_value(current_cred());  in bpf_iter_ksym_init()
911 	struct kallsym_iter *iter;  in kallsyms_open()  local
912 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
913 	if (!iter)  in kallsyms_open()
915 	reset_iter(iter, 0);  in kallsyms_open()
921 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()