Manual Pages  — VN_ISDISK

vn_isdisk – checks if a vnode represents a disk

SYNOPSIS DESCRIPTION RETURN VALUES AUTHORS

#include <sys/param.h>

#include <sys/vnode.h>

bool
vn_isdisk(struct vnode *vp);

bool
vn_isdisk_error(struct vnode *vp, int *errp);

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.

If the vnode represents a disk, true is returned; otherwise, false is returned and errp will contain the error number.

This manual page was written by Chad David <Mt davidc@acns.ab.ca>.