453 static int get_ksymbol_arch(struct kallsym_iter *iter)  in get_ksymbol_arch()  argument
455 	int ret = arch_get_kallsym(iter->pos - kallsyms_num_syms,  in get_ksymbol_arch()
456 				   &iter->value, &iter->type,  in get_ksymbol_arch()
457 				   iter->name);  in get_ksymbol_arch()
460 		iter->pos_arch_end = iter->pos;  in get_ksymbol_arch()
467 static int get_ksymbol_mod(struct kallsym_iter *iter)  in get_ksymbol_mod()  argument
469 	int ret = module_get_kallsym(iter->pos - iter->pos_arch_end,  in get_ksymbol_mod()
470 				     &iter->value, &iter->type,  in get_ksymbol_mod()
471 				     iter->name, iter->module_name,  in get_ksymbol_mod()
472 				     &iter->exported);  in get_ksymbol_mod()
474 		iter->pos_mod_end = iter->pos;  in get_ksymbol_mod()
481 static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)  in get_ksymbol_ftrace_mod()  argument
483 	int ret = ftrace_mod_get_kallsym(iter->pos - iter->pos_mod_end,  in get_ksymbol_ftrace_mod()
484 					 &iter->value, &iter->type,  in get_ksymbol_ftrace_mod()
485 					 iter->name, iter->module_name,  in get_ksymbol_ftrace_mod()
486 					 &iter->exported);  in get_ksymbol_ftrace_mod()
488 		iter->pos_ftrace_mod_end = iter->pos;  in get_ksymbol_ftrace_mod()
495 static int get_ksymbol_bpf(struct kallsym_iter *iter)  in get_ksymbol_bpf()  argument
497 	iter->module_name[0] = '\0';  in get_ksymbol_bpf()
498 	iter->exported = 0;  in get_ksymbol_bpf()
499 	return bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,  in get_ksymbol_bpf()
500 			       &iter->value, &iter->type,  in get_ksymbol_bpf()
501 			       iter->name) < 0 ? 0 : 1;  in get_ksymbol_bpf()
505 static unsigned long get_ksymbol_core(struct kallsym_iter *iter)  in get_ksymbol_core()  argument
507 	unsigned off = iter->nameoff;  in get_ksymbol_core()
509 	iter->module_name[0] = '\0';  in get_ksymbol_core()
510 	iter->value = kallsyms_sym_address(iter->pos);  in get_ksymbol_core()
512 	iter->type = kallsyms_get_symbol_type(off);  in get_ksymbol_core()
514 	off = kallsyms_expand_symbol(off, iter->name, ARRAY_SIZE(iter->name));  in get_ksymbol_core()
516 	return off - iter->nameoff;  in get_ksymbol_core()
519 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)  in reset_iter()  argument
521 	iter->name[0] = '\0';  in reset_iter()
522 	iter->nameoff = get_symbol_offset(new_pos);  in reset_iter()
523 	iter->pos = new_pos;  in reset_iter()
525 		iter->pos_arch_end = 0;  in reset_iter()
526 		iter->pos_mod_end = 0;  in reset_iter()
527 		iter->pos_ftrace_mod_end = 0;  in reset_iter()
536 static int update_iter_mod(struct kallsym_iter *iter, loff_t pos)  in update_iter_mod()  argument
538 	iter->pos = pos;  in update_iter_mod()
540 	if ((!iter->pos_arch_end || iter->pos_arch_end > pos) &&  in update_iter_mod()
541 	    get_ksymbol_arch(iter))  in update_iter_mod()
544 	if ((!iter->pos_mod_end || iter->pos_mod_end > pos) &&  in update_iter_mod()
545 	    get_ksymbol_mod(iter))  in update_iter_mod()
548 	if ((!iter->pos_ftrace_mod_end || iter->pos_ftrace_mod_end > pos) &&  in update_iter_mod()
549 	    get_ksymbol_ftrace_mod(iter))  in update_iter_mod()
552 	return get_ksymbol_bpf(iter);  in update_iter_mod()
556 static int update_iter(struct kallsym_iter *iter, loff_t pos)  in update_iter()  argument
560 		return update_iter_mod(iter, pos);  in update_iter()
563 	if (pos != iter->pos)  in update_iter()
564 		reset_iter(iter, pos);  in update_iter()
566 	iter->nameoff += get_ksymbol_core(iter);  in update_iter()
567 	iter->pos++;  in update_iter()
595 	struct kallsym_iter *iter = m->private;  in s_show()  local
598 	if (!iter->name[0])  in s_show()
601 	value = iter->show_value ? (void *)iter->value : NULL;  in s_show()
603 	if (iter->module_name[0]) {  in s_show()
610 		type = iter->exported ? toupper(iter->type) :  in s_show()
611 					tolower(iter->type);  in s_show()
613 			   type, iter->name, iter->module_name);  in s_show()
616 			   iter->type, iter->name);  in s_show()
668 	struct kallsym_iter *iter;  in kallsyms_open()  local
669 	iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter));  in kallsyms_open()
670 	if (!iter)  in kallsyms_open()
672 	reset_iter(iter, 0);  in kallsyms_open()
674 	iter->show_value = kallsyms_show_value();  in kallsyms_open()