568 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
570 	int ret = module_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_mod()
571 				     &iter->value, &iter->type,  in get_ksymbol_mod()
572 				     iter->name, iter->module_name,  in get_ksymbol_mod()
573 				     &iter->exported);  in get_ksymbol_mod()
575 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
587 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
589 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
590 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
591 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
592 					 &iter->exported);  in get_ksymbol_ftrace_mod()
594 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
601 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
605 	strscpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
606 	iter->exported = 0;  in get_ksymbol_bpf()
607 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
608 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
609 			      iter->name);  in get_ksymbol_bpf()
611 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
623 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
625 	strscpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
626 	iter->exported = 0;  in get_ksymbol_kprobe()
627 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
628 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
629 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
633 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
635 	unsigned off = iter->nameoff;  in get_ksymbol_core()
637 	iter->module_name[0] = '\0';  in get_ksymbol_core()
638 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
640 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
642 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
644 	return off - iter->nameoff;  in get_ksymbol_core()
647 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
649 	iter->name[0] = '\0';  in reset_iter()
650 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
651 	iter->pos = new_pos;  in reset_iter()
653 		iter->pos_mod_end = 0;  in reset_iter()
654 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
655 		iter->pos_bpf_end = 0;  in reset_iter()
664 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
666 	iter->pos = pos;  in update_iter_mod()
668 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
669 	    get_ksymbol_mod(iter))  in update_iter_mod()
672 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
673 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
676 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
677 	    get_ksymbol_bpf(iter))  in update_iter_mod()
680 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
684 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
688 		return update_iter_mod(iter, pos);  in update_iter()
691 	if (pos != iter->pos)  in update_iter()
692 		reset_iter(iter, pos);  in update_iter()
694 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
695 	iter->pos++;  in update_iter()
723 	struct kallsym_iter *iter = m->private;  in s_show()  local
726 	if (!iter->name[0])  in s_show()
729 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
731 	if (iter->module_name[0]) {  in s_show()
738 		type = iter->exported ? toupper(iter->type) :  in s_show()
739 					tolower(iter->type);  in s_show()
741 			   type, iter->name, iter->module_name);  in s_show()
744 			   iter->type, iter->name);  in s_show()
800 	struct kallsym_iter *iter = priv_data;  in bpf_iter_ksym_init()  local
802 	reset_iter(iter, 0);  in bpf_iter_ksym_init()
807 	iter->show_value = kallsyms_show_value(current_cred());  in bpf_iter_ksym_init()
852 	struct kallsym_iter *iter;  in kallsyms_open()  local
853 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
854 	if (!iter)  in kallsyms_open()
856 	reset_iter(iter, 0);  in kallsyms_open()
862 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()