vchain

早期freebsd实现

#	@(#)vchain	8.1 (Berkeley) 6/10/93
#
# Given a vnode, follow its mount pointers
define vchain

	set $num = 0

	set $vp=(struct vnode *)$arg0
	while ($vp)
		printf "vp: 0x%x freef: 0x%x usecount: %d flags: 0x%x\n", $vp, $vp->v_freef, $vp->v_usecount, $vp->v_flag
		set $num++
		set $vp = $vp->v_mountf
	end
	printf "Number of vnodes: %d\n", $num
end

define vprint
	set $vp=(struct vnode *)$arg0
	set $ip=(struct inode *)$vp->v_data
end

define vall
	set $mp=rootfs
	while ($mp)
		vchain $mp->mnt_mounth
		set $mp=$mp->mnt_next
	end
end