608 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
610 	int ret = module_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_mod()
611 				     &iter->value, &iter->type,  in get_ksymbol_mod()
612 				     iter->name, iter->module_name,  in get_ksymbol_mod()
613 				     &iter->exported);  in get_ksymbol_mod()
615 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
627 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
629 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
630 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
631 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
632 					 &iter->exported);  in get_ksymbol_ftrace_mod()
634 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
641 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
645 	strscpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
646 	iter->exported = 0;  in get_ksymbol_bpf()
647 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
648 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
649 			      iter->name);  in get_ksymbol_bpf()
651 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
663 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
665 	strscpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
666 	iter->exported = 0;  in get_ksymbol_kprobe()
667 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
668 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
669 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
673 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
675 	unsigned off = iter->nameoff;  in get_ksymbol_core()
677 	iter->module_name[0] = '\0';  in get_ksymbol_core()
678 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
680 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
682 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
684 	return off - iter->nameoff;  in get_ksymbol_core()
687 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
689 	iter->name[0] = '\0';  in reset_iter()
690 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
691 	iter->pos = new_pos;  in reset_iter()
693 		iter->pos_mod_end = 0;  in reset_iter()
694 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
695 		iter->pos_bpf_end = 0;  in reset_iter()
704 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
706 	iter->pos = pos;  in update_iter_mod()
708 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
709 	    get_ksymbol_mod(iter))  in update_iter_mod()
712 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
713 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
716 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
717 	    get_ksymbol_bpf(iter))  in update_iter_mod()
720 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
724 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
728 		return update_iter_mod(iter, pos);  in update_iter()
731 	if (pos != iter->pos)  in update_iter()
732 		reset_iter(iter, pos);  in update_iter()
734 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
735 	iter->pos++;  in update_iter()
763 	struct kallsym_iter *iter = m->private;  in s_show()  local
766 	if (!iter->name[0])  in s_show()
769 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
771 	if (iter->module_name[0]) {  in s_show()
778 		type = iter->exported ? toupper(iter->type) :  in s_show()
779 					tolower(iter->type);  in s_show()
781 			   type, iter->name, iter->module_name);  in s_show()
784 			   iter->type, iter->name);  in s_show()
840 	struct kallsym_iter *iter = priv_data;  in bpf_iter_ksym_init()  local
842 	reset_iter(iter, 0);  in bpf_iter_ksym_init()
847 	iter->show_value = kallsyms_show_value(current_cred());  in bpf_iter_ksym_init()
891 	struct kallsym_iter *iter;  in kallsyms_open()  local
892 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
893 	if (!iter)  in kallsyms_open()
895 	reset_iter(iter, 0);  in kallsyms_open()
901 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()