vchain

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    1 #       $NetBSD: vchain,v 1.11 2019/12/06 02:37:53 mrg Exp $
    2 
    3 #       @(#)vchain      8.1 (Berkeley) 6/10/93
    4 #
    5 
    6 define vchain
    7         set $num = 0
    8 
    9         set $vi = (struct vnode_impl *)$arg0
   10         printf "lrulist_next: 0x%lx\n", $vi->vi_lrulist.tqe_next
   11         while ($vi)
   12                 set $vp = &$vi->vi_vnode
   13                 printf "vp: 0x%lx usecount: %d flags: i:0x%x v:0x%x u:0x%x\n",\
   14                        $vp, $vp->v_uobj.uo_refs, \
   15                        $vp->v_iflag, $vp->v_vflag, $vp->v_uflag
   16                 set $num++
   17                 set $vi = $vi->vi_mntvnodes.tqe_next
   18         end
   19         printf "Number of vnodes: %d\n", $num
   20 end
   21 
   22 document vchain
   23 Given a vnode, follow its mount pointers
   24 end
   25 
   26 define vprint
   27         set $vp=(struct vnode *)$arg0
   28         set $ip=(struct inode *)$vp->v_data
   29 end
   30 
   31 define mp_vchain
   32         set $mp = $arg0->me_mount
   33         set $first = $mp->mnt_vnodelist.tqh_first
   34         if ($first)
   35                 vchain $mp->mnt_vnodelist.tqh_first
   36         end
   37 end
   38 document mp_vchain
   39 print the vnode chain for a given mount point
   40 end
   41 
   42 define vall
   43         set $mpe=mountlist.tqh_first
   44         while ($mpe)
   45                 printf "\tmount point at 0x%lx\n", $mpe
   46                 mp_vchain $mpe
   47                 set $mpe = $mpe->me_list.tqe_next
   48 
   49                 # "break"
   50                 if ((const void *)$mpe == (const void *)&mountlist)
   51                         set $mpe = 0
   52                 end
   53         end
   54 end
   55 document vall
   56 print vnode chains for all mount points
   57 end
   58 
   59 define mountdump
   60         set $me=mountlist.tqh_first
   61         while ($me)
   62                 if ($me->me_type == ME_MOUNT)
   63                         set $mp = $me->me_mount
   64                         printf "%s on %s type %s, (mp 0x%lx, privdata 0x%lx)\n", \
   65                             $mp->mnt_stat->f_mntfromname, \
   66                             $mp->mnt_stat->f_mntonname, \
   67                             $mp->mnt_op->vfs_name, $mp, $mp->mnt_data
   68                 end
   69                 set $me=$me->me_list.tqe_next
   70                 if ((const void *)$me == (const void *)&mountlist)
   71                         set $me = 0
   72                 end
   73         end
   74 end

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FreeBSD/Linux Kernel Cross Reference sys/gdbscripts/vchain

FreeBSD/Linux Kernel Cross Reference
sys/gdbscripts/vchain