NetBSD/sys/gdbscripts/vchain

#	$NetBSD: vchain,v 1.5 2006/11/04 20:33:17 pooka Exp $

#	@(#)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 freelist_next: 0x%x usecount: %d flags: 0x%x\n", $vp, $vp->v_freelist.tqe_next, $vp->v_uobj.uo_refs, $vp->v_flag
		set $num++
		set $vp = $vp->v_mntvnodes.tqe_next
	end
	printf "Number of vnodes: %d\n", $num
end

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

# print the vnode chain for a given mount point
define mp_vchain
	set $mp = (struct mount *)$arg0
	vchain $mp->mnt_vnodelist.tqh_first
end

# print vnode chains for all mount points
define vall
	set $mp=mountlist.cqh_first
	while ($mp)
		printf "\tmount point at 0x%x\n", $mp
		mp_vchain $mp
		set $mp=$mp->mnt_list.cqe_next

		# "break"
		if ((const void *)$mp == (const void *)&mountlist)
			set $mp = 0
		end
	end
end

define mountdump
	set $mp=mountlist.cqh_first
	while ($mp)
		printf "%s on %s type %s, (mp 0x%x, privdata 0x%x)\n", \
		    $mp->mnt_stat->f_mntfromname, $mp->mnt_stat->f_mntonname, \
		    $mp->mnt_op->vfs_name, $mp, $mp->mnt_data
		set $mp=$mp->mnt_list.cqe_next
		if ((const void *)$mp == (const void *)&mountlist)
			set $mp = 0
		end
	end