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

# resource\_string\_value(9freebsd)

get a value from the hints mechanism

Part of [resource\_int\_value(9freebsd)](/resource_int_value/9freebsd.md).

## NAME

**resource\_int\_value**, **resource\_long\_value**, **resource\_string\_value** – get a value from the hints mechanism

## SYNOPSIS

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

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

*int*\

**resource\_int\_value**(*const char \*name*, *int unit*, *const char \*resname*, *int \*result*);

*int*\

**resource\_long\_value**(*const char \*name*, *int unit*, *const char \*resname*, *long \*result*);

*int*\

**resource\_string\_value**(*const char \*name*, *int unit*, *const char \*resname*, *const char \*\*result*);

## DESCRIPTION

These functions fetch a value from the “hints” mechanism.

The functions take the following arguments:

- *name*

  The name of the device to get the resource value from.

- *unit*

  The unit number of the device. -1 is special and is used for wildcard entries.

- *resname*

  The resource name.

- *result*

  A pointer to memory in which to store the resource value.

## RETURN VALUES

If successful, the functions return 0. Otherwise, a non-zero error code is returned.

## ERRORS

The functions will fail if:

- \[ENOENT\]

  The resource could not be found.

- \[EFTYPE\]

  Inappropriate resource type.

## SEE ALSO

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

## AUTHORS

This manual page was written by Warner Losh ⟨*imp@FreeBSD.org*⟩.