---
name: "bus_generic_read_ivar"
section: "9freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/bus_generic_read_ivar/9freebsd"
---

# bus\_generic\_read\_ivar(9freebsd)

generic implementation of BUS\_READ\_IVAR and BUS\_WRITE\_IVAR for buses

## NAME

**bus\_generic\_read\_ivar**, **bus\_generic\_write\_ivar** – generic implementation of BUS\_READ\_IVAR and BUS\_WRITE\_IVAR for buses

## SYNOPSIS

**#include \<sys/param.h\>**

**#include \<sys/bus.h\>**

*int*\

**bus\_generic\_read\_ivar**(*device\_t dev*, *device\_t child*, *int index*, *uintptr\_t \*result*);

*int*\

**bus\_generic\_write\_ivar**(*device\_t dev*, *device\_t child*, *int index*, *uintptr\_t value*);

## DESCRIPTION

These functions simply return ENOENT.

## SEE ALSO

[device(9)](/device/9.md), [driver(9)](/driver/9.md)

## AUTHORS

This manual page was written by Doug Rabson.