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

# vn\_isdisk(9freebsd)

checks if a vnode represents a disk

## NAME

**vn\_isdisk** – checks if a vnode represents a disk

## SYNOPSIS

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

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

*int*\

**vn\_isdisk**(*struct vnode \*vp*, *int \*errp*);

## DESCRIPTION

The **vn\_isdisk**() function checks to see if *vp* represents a disk. In order for *vp* to be a disk, it must be a character device, *v\_rdev* must be valid, and the *cdevsw* entry's *flags* must have D\_DISK set.

Its arguments are:

- *vp*

  The vnode to check.

- *errp*

  An integer pointer to store the error number in if the call fails.

## RETURN VALUES

If the vnode represents a disk, 1 is returned; otherwise, 0 is returned and *errp* will contain the error number.

## AUTHORS

This manual page was written by Chad David ⟨*davidc@acns.ab.ca*⟩.