576 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
578 	int ret = module_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_mod()
579 				     &iter->value, &iter->type,  in get_ksymbol_mod()
580 				     iter->name, iter->module_name,  in get_ksymbol_mod()
581 				     &iter->exported);  in get_ksymbol_mod()
583 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
595 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
597 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
598 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
599 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
600 					 &iter->exported);  in get_ksymbol_ftrace_mod()
602 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
609 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
613 	strscpy(iter->module_name, "bpf", MODULE_NAME_LEN);  in get_ksymbol_bpf()
614 	iter->exported = 0;  in get_ksymbol_bpf()
615 	ret = bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
616 			      &iter->value, &iter->type,  in get_ksymbol_bpf()
617 			      iter->name);  in get_ksymbol_bpf()
619 		iter->pos_bpf_end = iter->pos;  in get_ksymbol_bpf()
631 static int get_ksymbol_kprobe(struct kallsym_iter *iter)  in get_ksymbol_kprobe()  argument
633 	strscpy(iter->module_name, "__builtin__kprobes", MODULE_NAME_LEN);  in get_ksymbol_kprobe()
634 	iter->exported = 0;  in get_ksymbol_kprobe()
635 	return kprobe_get_kallsym(iter->pos - iter->pos_bpf_end,  in get_ksymbol_kprobe()
636 				  &iter->value, &iter->type,  in get_ksymbol_kprobe()
637 				  iter->name) < 0 ? 0 : 1;  in get_ksymbol_kprobe()
641 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
643 	unsigned off = iter->nameoff;  in get_ksymbol_core()
645 	iter->module_name[0] = '\0';  in get_ksymbol_core()
646 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
648 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
650 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
652 	return off - iter->nameoff;  in get_ksymbol_core()
655 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
657 	iter->name[0] = '\0';  in reset_iter()
658 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
659 	iter->pos = new_pos;  in reset_iter()
661 		iter->pos_mod_end = 0;  in reset_iter()
662 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
663 		iter->pos_bpf_end = 0;  in reset_iter()
672 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
674 	iter->pos = pos;  in update_iter_mod()
676 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
677 	    get_ksymbol_mod(iter))  in update_iter_mod()
680 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
681 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
684 	if ((!iter->pos_bpf_end || iter->pos_bpf_end > pos) &&  in update_iter_mod()
685 	    get_ksymbol_bpf(iter))  in update_iter_mod()
688 	return get_ksymbol_kprobe(iter);  in update_iter_mod()
692 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
696 		return update_iter_mod(iter, pos);  in update_iter()
699 	if (pos != iter->pos)  in update_iter()
700 		reset_iter(iter, pos);  in update_iter()
702 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
703 	iter->pos++;  in update_iter()
731 	struct kallsym_iter *iter = m->private;  in s_show()  local
734 	if (!iter->name[0])  in s_show()
737 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
739 	if (iter->module_name[0]) {  in s_show()
746 		type = iter->exported ? toupper(iter->type) :  in s_show()
747 					tolower(iter->type);  in s_show()
749 			   type, iter->name, iter->module_name);  in s_show()
752 			   iter->type, iter->name);  in s_show()
808 	struct kallsym_iter *iter = priv_data;  in bpf_iter_ksym_init()  local
810 	reset_iter(iter, 0);  in bpf_iter_ksym_init()
815 	iter->show_value = kallsyms_show_value(current_cred());  in bpf_iter_ksym_init()
860 	struct kallsym_iter *iter;  in kallsyms_open()  local
861 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
862 	if (!iter)  in kallsyms_open()
864 	reset_iter(iter, 0);  in kallsyms_open()
870 	iter->show_value = kallsyms_show_value(file->f_cred);  in kallsyms_open()