665 static int get_ksymbol_arch(struct kallsym_iter *iter)  in get_ksymbol_arch()  argument
667 	int ret = arch_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_arch()
668 				   &iter->value, &iter->type,  in get_ksymbol_arch()
669 				   iter->name);  in get_ksymbol_arch()
672 		iter->pos_arch_end = iter->pos;  in get_ksymbol_arch()
679 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
681 	int ret = module_get_kallsym(iter->pos - iter->pos_arch_end,  in get_ksymbol_mod()
682 				     &iter->value, &iter->type,  in get_ksymbol_mod()
683 				     iter->name, iter->module_name,  in get_ksymbol_mod()
684 				     &iter->exported);  in get_ksymbol_mod()
686 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
698 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
700 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
701 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
702 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
703 					 &iter->exported);  in get_ksymbol_ftrace_mod()
705 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
712 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
716 	strlcpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
717 	iter->exported = 0;  in get_ksymbol_bpf()
718 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
719 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
720 			      iter->name);  in get_ksymbol_bpf()
722 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
734 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
736 	strlcpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
737 	iter->exported = 0;  in get_ksymbol_kprobe()
738 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
739 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
740 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
744 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
746 	unsigned off = iter->nameoff;  in get_ksymbol_core()
748 	iter->module_name[0] = '\0';  in get_ksymbol_core()
749 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
751 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
753 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
755 	return off - iter->nameoff;  in get_ksymbol_core()
758 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
760 	iter->name[0] = '\0';  in reset_iter()
761 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
762 	iter->pos = new_pos;  in reset_iter()
764 		iter->pos_arch_end = 0;  in reset_iter()
765 		iter->pos_mod_end = 0;  in reset_iter()
766 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
767 		iter->pos_bpf_end = 0;  in reset_iter()
776 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
778 	iter->pos = pos;  in update_iter_mod()
780 	if ((!iter->pos_arch_end || iter->pos_arch_end > pos) &&  in update_iter_mod()
781 	    get_ksymbol_arch(iter))  in update_iter_mod()
784 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
785 	    get_ksymbol_mod(iter))  in update_iter_mod()
788 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
789 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
792 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
793 	    get_ksymbol_bpf(iter))  in update_iter_mod()
796 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
800 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
804 		return update_iter_mod(iter, pos);  in update_iter()
807 	if (pos != iter->pos)  in update_iter()
808 		reset_iter(iter, pos);  in update_iter()
810 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
811 	iter->pos++;  in update_iter()
839 	struct kallsym_iter *iter = m->private;  in s_show()  local
842 	if (!iter->name[0])  in s_show()
845 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
847 	if (iter->module_name[0]) {  in s_show()
854 		type = iter->exported ? toupper(iter->type) :  in s_show()
855 					tolower(iter->type);  in s_show()
857 			   type, iter->name, iter->module_name);  in s_show()
860 			   iter->type, iter->name);  in s_show()
916 	struct kallsym_iter *iter = priv_data;  in bpf_iter_ksym_init()  local
918 	reset_iter(iter, 0);  in bpf_iter_ksym_init()
923 	iter->show_value = kallsyms_show_value(current_cred());  in bpf_iter_ksym_init()
1003 	struct kallsym_iter *iter;  in kallsyms_open()  local
1004 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
1005 	if (!iter)  in kallsyms_open()
1007 	reset_iter(iter, 0);  in kallsyms_open()
1013 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()