NetBSD-5.0.2/sbin/fsck_lfs/pass0.c
/* $NetBSD: pass0.c,v 1.31 2008/04/28 20:23:08 martin Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Konrad E. Schroder <perseant@hhhh.org>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*-
* Copyright (c) 1980, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/buf.h>
#include <sys/mount.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/dir.h>
#define vnode uvnode
#include <ufs/lfs/lfs.h>
#undef vnode
#include <assert.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <util.h>
#include "bufcache.h"
#include "vnode.h"
#include "lfs_user.h"
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
extern int fake_cleanseg;
/*
* Pass 0. Check the LFS partial segments for valid checksums, correcting
* if necessary. Also check for valid offsets for inode and finfo blocks.
*/
/*
* XXX more could be done here---consistency between inode-held blocks and
* finfo blocks, for one thing.
*/
#define dbshift (fs->lfs_bshift - fs->lfs_blktodb)
void
pass0(void)
{
daddr_t daddr;
CLEANERINFO *cip;
IFILE *ifp;
struct ubuf *bp, *cbp;
ino_t ino, plastino, nextino, lowfreeino, freehd;
char *visited;
int writeit = 0;
/*
* Check the inode free list for inuse inodes, and cycles.
* Make sure that all free inodes are in fact on the list.
*/
visited = ecalloc(maxino, sizeof(*visited));
plastino = 0;
lowfreeino = maxino;
LFS_CLEANERINFO(cip, fs, cbp);
freehd = ino = cip->free_head;
brelse(cbp, 0);
while (ino) {
if (lowfreeino > ino)
lowfreeino = ino;
if (ino >= maxino) {
pwarn("OUT OF RANGE INO %llu ON FREE LIST\n",
(unsigned long long)ino);
break;
}
if (visited[ino]) {
pwarn("INO %llu ALREADY FOUND ON FREE LIST\n",
(unsigned long long)ino);
if (preen || reply("FIX") == 1) {
/* plastino can't be zero */
LFS_IENTRY(ifp, fs, plastino, bp);
ifp->if_nextfree = 0;
VOP_BWRITE(bp);
}
break;
}
visited[ino] = 1;
LFS_IENTRY(ifp, fs, ino, bp);
nextino = ifp->if_nextfree;
daddr = ifp->if_daddr;
brelse(bp, 0);
if (daddr) {
pwarn("INO %llu WITH DADDR 0x%llx ON FREE LIST\n",
(unsigned long long)ino, (long long) daddr);
if (preen || reply("FIX") == 1) {
if (plastino == 0) {
freehd = nextino;
sbdirty();
} else {
LFS_IENTRY(ifp, fs, plastino, bp);
ifp->if_nextfree = nextino;
VOP_BWRITE(bp);
}
ino = nextino;
continue;
}
}
plastino = ino;
ino = nextino;
}
/*
* Make sure all free inodes were found on the list
*/
for (ino = maxino - 1; ino > ROOTINO; --ino) {
if (visited[ino])
continue;
LFS_IENTRY(ifp, fs, ino, bp);
if (ifp->if_daddr) {
brelse(bp, 0);
continue;
}
pwarn("INO %llu FREE BUT NOT ON FREE LIST\n",
(unsigned long long)ino);
if (preen || reply("FIX") == 1) {
assert(ino != freehd);
ifp->if_nextfree = freehd;
VOP_BWRITE(bp);
freehd = ino;
sbdirty();
/* If freelist was empty, this is the tail */
if (plastino == 0)
plastino = ino;
} else
brelse(bp, 0);
}
LFS_CLEANERINFO(cip, fs, cbp);
if (cip->free_head != freehd) {
/* They've already given us permission for this change */
cip->free_head = freehd;
writeit = 1;
}
if (freehd != fs->lfs_freehd) {
pwarn("FREE LIST HEAD IN SUPERBLOCK SHOULD BE %d (WAS %d)\n",
(int)fs->lfs_freehd, (int)freehd);
if (preen || reply("FIX")) {
fs->lfs_freehd = freehd;
sbdirty();
}
}
if (cip->free_tail != plastino) {
pwarn("FREE LIST TAIL SHOULD BE %llu (WAS %llu)\n",
(unsigned long long)plastino,
(unsigned long long)cip->free_tail);
if (preen || reply("FIX")) {
cip->free_tail = plastino;
writeit = 1;
}
}
if (writeit)
LFS_SYNC_CLEANERINFO(cip, fs, cbp, writeit);
else
brelse(cbp, 0);
if (fs->lfs_freehd == 0) {
pwarn("%sree list head is 0x0\n", preen ? "f" : "F");
if (preen || reply("FIX"))
extend_ifile(fs);
}
}