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/* Pass 4 of GNU fsck -- Check reference counts
Copyright (C) 1994, 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "fsck.h"
void
pass4()
{
ino_t number;
/* True if any reconnect attempt failed, in which case we don't try again. */
int reconn_failed = 0;
for (number = ROOTINO; number < maxino; number++)
{
if (linkfound[number] && inodestate[number] != UNALLOC)
{
if (linkcount[number] != linkfound[number])
{
pinode (0, number,
"LINK COUNT %d SHOULD BE %d IN",
linkcount[number], linkfound[number]);
if (preen || reply ("ADJUST"))
{
struct dinode dino;
getinode (number, &dino);
dino.di_nlink = linkfound[number];
write_inode (number, &dino);
pfix ("ADJUSTED");
}
else
pfail (0);
}
}
else if (linkfound[number] && inodestate[number] == UNALLOC)
{
/* This can't happen because we never count links to unallocated
nodes. */
errexit ("LINK RECORDED FOR UNALLOCATED NODE");
}
else if (!linkfound[number] && inodestate[number] != UNALLOC)
{
/* No links to allocated node. If the size is zero, then
we want to clear it; if the size is positive, then we
want to reattach in. */
struct dinode dino;
pinode (0, number, "UNREF");
getinode (number, &dino);
if (dino.di_size && !reconn_failed)
{
/* This can't happen for dirctories because pass 3 should
already have reset them up. */
if ((DI_MODE (&dino) & IFMT) == IFDIR)
errexit ("NO LINKS TO NONZERO DIRECTORY");
if (preen || reply ("RECONNECT"))
reconn_failed = !linkup (number, -1);
if (!reconn_failed)
pfix ("RECONNECTED");
else
pfail ("FAILED");
}
if (dino.di_size == 0 || reconn_failed)
{
if (preen || reply ("CLEAR"))
{
inodestate[number] = UNALLOC;
clear_inode (number, &dino);
pfix ("CLEARED");
}
else
pfail (0);
}
}
}
}
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