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VN_ISDISK(9) FreeBSD Kernel Developer's Manual VN_ISDISK(9)
NAME
vn_isdisk - checks if a vnode represents a disk
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
bool
vn_isdisk(struct vnode *vp);
bool
vn_isdisk_error(struct vnode *vp, int *errp);
DESCRIPTION
The vn_isdisk() and vn_isdisk_error() functions check 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.
The 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, true is returned; otherwise, false is
returned and errp will contain the error number.
AUTHORS
This manual page was written by Chad David <davidc@acns.ab.ca>.
FreeBSD 14.0-RELEASE-p6 June 28, 2021 FreeBSD 14.0-RELEASE-p6