NetBSD/sys/gdbscripts/vchain

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# $NetBSD: vchain,v 1.11 2019/12/06 02:37:53 mrg Exp $
# @(#)vchain 8.1 (Berkeley) 6/10/93
#
define vchain
set $num = 0
set $vi = (struct vnode_impl *)$arg0
printf "lrulist_next: 0x%lx\n", $vi->vi_lrulist.tqe_next
while ($vi)
set $vp = &$vi->vi_vnode
printf "vp: 0x%lx usecount: %d flags: i:0x%x v:0x%x u:0x%x\n",\
$vp, $vp->v_uobj.uo_refs, \
$vp->v_iflag, $vp->v_vflag, $vp->v_uflag
set $num++
set $vi = $vi->vi_mntvnodes.tqe_next
end
printf "Number of vnodes: %d\n", $num
end
document vchain
Given a vnode, follow its mount pointers
end
define vprint
set $vp=(struct vnode *)$arg0
set $ip=(struct inode *)$vp->v_data
end
define mp_vchain
set $mp = $arg0->me_mount
set $first = $mp->mnt_vnodelist.tqh_first
if ($first)
vchain $mp->mnt_vnodelist.tqh_first
end
end
document mp_vchain
print the vnode chain for a given mount point
end
define vall
set $mpe=mountlist.tqh_first
while ($mpe)
printf "\tmount point at 0x%lx\n", $mpe
mp_vchain $mpe
set $mpe = $mpe->me_list.tqe_next
# "break"
if ((const void *)$mpe == (const void *)&mountlist)
set $mpe = 0
end
end
end
document vall
print vnode chains for all mount points
end
define mountdump
set $me=mountlist.tqh_first
while ($me)
if ($me->me_type == ME_MOUNT)
set $mp = $me->me_mount
printf "%s on %s type %s, (mp 0x%lx, privdata 0x%lx)\n", \
$mp->mnt_stat->f_mntfromname, \
$mp->mnt_stat->f_mntonname, \
$mp->mnt_op->vfs_name, $mp, $mp->mnt_data
end
set $me=$me->me_list.tqe_next
if ((const void *)$me == (const void *)&mountlist)
set $me = 0
end
end
end