366 lines
9.4 KiB
C
366 lines
9.4 KiB
C
/* $NetBSD: pass1.c,v 1.23 2001/01/05 02:02:57 lukem Exp $ */
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/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)pass1.c 8.6 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: pass1.c,v 1.23 2001/01/05 02:02:57 lukem Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/ffs/fs.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "fsck.h"
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#include "extern.h"
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#include "fsutil.h"
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static ufs_daddr_t badblk;
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static ufs_daddr_t dupblk;
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static void checkinode __P((ino_t, struct inodesc *));
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void
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pass1()
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{
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ino_t inumber;
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int c, i, cgd;
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struct inodesc idesc;
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/*
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* Set file system reserved blocks in used block map.
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*/
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for (c = 0; c < sblock->fs_ncg; c++) {
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cgd = cgdmin(sblock, c);
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if (c == 0)
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i = cgbase(sblock, c);
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else
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i = cgsblock(sblock, c);
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for (; i < cgd; i++)
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setbmap(i);
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}
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i = sblock->fs_csaddr;
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cgd = i + howmany(sblock->fs_cssize, sblock->fs_fsize);
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for (; i < cgd; i++)
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setbmap(i);
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/*
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* Find all allocated blocks.
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*/
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memset(&idesc, 0, sizeof(struct inodesc));
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idesc.id_type = ADDR;
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idesc.id_func = pass1check;
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inumber = 0;
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n_files = n_blks = 0;
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resetinodebuf();
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for (c = 0; c < sblock->fs_ncg; c++) {
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for (i = 0; i < sblock->fs_ipg; i++, inumber++) {
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if (inumber < ROOTINO)
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continue;
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checkinode(inumber, &idesc);
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}
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}
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freeinodebuf();
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do_blkswap = 0; /* has been done */
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}
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static void
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checkinode(inumber, idesc)
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ino_t inumber;
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struct inodesc *idesc;
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{
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struct dinode *dp;
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struct zlncnt *zlnp;
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int ndb, j;
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mode_t mode;
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u_int64_t size;
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char symbuf[MAXSYMLINKLEN];
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dp = getnextinode(inumber);
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mode = iswap16(dp->di_mode) & IFMT;
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size = iswap64(dp->di_size);
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if (mode == 0) {
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if (memcmp(dp->di_db, zino.di_db,
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NDADDR * sizeof(ufs_daddr_t)) ||
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memcmp(dp->di_ib, zino.di_ib,
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NIADDR * sizeof(ufs_daddr_t)) ||
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dp->di_mode || dp->di_size) {
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pfatal("PARTIALLY ALLOCATED INODE I=%u", inumber);
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if (reply("CLEAR") == 1) {
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dp = ginode(inumber);
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clearinode(dp);
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inodirty();
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} else
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markclean = 0;
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}
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statemap[inumber] = USTATE;
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return;
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}
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lastino = inumber;
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if (/* dp->di_size < 0 || */
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size + sblock->fs_bsize - 1 < size ||
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(mode == IFDIR && size > MAXDIRSIZE)) {
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if (debug)
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printf("bad size %llu:",(unsigned long long)size);
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goto unknown;
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}
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if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) {
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dp = ginode(inumber);
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dp->di_size = iswap64(sblock->fs_fsize);
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size = sblock->fs_fsize;
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dp->di_mode = iswap16(IFREG|0600);
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inodirty();
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}
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ndb = howmany(size, sblock->fs_bsize);
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if (ndb < 0) {
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if (debug)
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printf("bad size %llu ndb %d:",
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(unsigned long long)size, ndb);
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goto unknown;
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}
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if (mode == IFBLK || mode == IFCHR)
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ndb++;
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if (mode == IFLNK) {
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/*
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* Note that the old fastlink format always had di_blocks set
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* to 0. Other than that we no longer use the `spare' field
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* (which is now the extended uid) for sanity checking, the
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* new format is the same as the old. We simply ignore the
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* conversion altogether. - mycroft, 19MAY1994
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*/
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if (doinglevel2 &&
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size > 0 && size < MAXSYMLINKLEN &&
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dp->di_blocks != 0) {
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if (bread(fsreadfd, symbuf,
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fsbtodb(sblock, iswap32(dp->di_db[0])),
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(long)secsize) != 0)
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errx(EEXIT, "cannot read symlink");
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if (debug) {
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symbuf[size] = 0;
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printf("convert symlink %u(%s) of size %lld\n",
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inumber, symbuf,
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(unsigned long long)size);
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}
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dp = ginode(inumber);
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memmove(dp->di_shortlink, symbuf, (long)size);
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dp->di_blocks = 0;
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inodirty();
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}
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/*
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* Fake ndb value so direct/indirect block checks below
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* will detect any garbage after symlink string.
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*/
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if (size < sblock->fs_maxsymlinklen ||
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(sblock->fs_maxsymlinklen == 0 && dp->di_blocks == 0)) {
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ndb = howmany(size, sizeof(daddr_t));
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if (ndb > NDADDR) {
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j = ndb - NDADDR;
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for (ndb = 1; j > 1; j--)
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ndb *= NINDIR(sblock);
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ndb += NDADDR;
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}
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}
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}
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for (j = ndb; j < NDADDR; j++)
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if (dp->di_db[j] != 0) {
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if (debug)
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printf("bad direct addr ix %d: %d [ndb %d]\n",
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j, iswap32(dp->di_db[j]), ndb);
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goto unknown;
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}
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for (j = 0, ndb -= NDADDR; ndb > 0; j++)
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ndb /= NINDIR(sblock);
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for (; j < NIADDR; j++)
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if (dp->di_ib[j] != 0) {
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if (debug)
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printf("bad indirect addr: %d\n",
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iswap32(dp->di_ib[j]));
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goto unknown;
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}
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if (ftypeok(dp) == 0)
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goto unknown;
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n_files++;
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lncntp[inumber] = iswap16(dp->di_nlink);
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if (lncntp[inumber] <= 0) {
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zlnp = (struct zlncnt *)malloc(sizeof *zlnp);
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if (zlnp == NULL) {
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markclean = 0;
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pfatal("LINK COUNT TABLE OVERFLOW");
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if (reply("CONTINUE") == 0) {
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ckfini();
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exit(EEXIT);
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}
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} else {
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zlnp->zlncnt = inumber;
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zlnp->next = zlnhead;
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zlnhead = zlnp;
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}
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}
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if (mode == IFDIR) {
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if (size == 0)
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statemap[inumber] = DCLEAR;
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else
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statemap[inumber] = DSTATE;
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cacheino(dp, inumber);
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} else
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statemap[inumber] = FSTATE;
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typemap[inumber] = IFTODT(mode);
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if (doinglevel2 &&
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(iswap16(dp->di_ouid) != (u_short)-1 ||
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iswap16(dp->di_ogid) != (u_short)-1)) {
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dp = ginode(inumber);
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dp->di_uid = iswap32(iswap16(dp->di_ouid));
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dp->di_ouid = iswap16(-1);
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dp->di_gid = iswap32(iswap16(dp->di_ogid));
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dp->di_ogid = iswap16(-1);
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inodirty();
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}
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badblk = dupblk = 0;
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idesc->id_number = inumber;
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(void)ckinode(dp, idesc);
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idesc->id_entryno *= btodb(sblock->fs_fsize);
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if (iswap32(dp->di_blocks) != idesc->id_entryno) {
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pwarn("INCORRECT BLOCK COUNT I=%u (%d should be %d)",
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inumber, iswap32(dp->di_blocks), idesc->id_entryno);
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if (preen)
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printf(" (CORRECTED)\n");
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else if (reply("CORRECT") == 0) {
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markclean = 0;
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return;
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}
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dp = ginode(inumber);
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dp->di_blocks = iswap32(idesc->id_entryno);
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inodirty();
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}
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return;
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unknown:
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pfatal("UNKNOWN FILE TYPE I=%u", inumber);
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statemap[inumber] = FCLEAR;
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if (reply("CLEAR") == 1) {
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statemap[inumber] = USTATE;
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dp = ginode(inumber);
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clearinode(dp);
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inodirty();
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} else
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markclean = 0;
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}
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int
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pass1check(idesc)
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struct inodesc *idesc;
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{
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int res = KEEPON;
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int anyout, nfrags;
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ufs_daddr_t blkno = idesc->id_blkno;
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struct dups *dlp;
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struct dups *new;
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if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) {
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blkerror(idesc->id_number, "BAD", blkno);
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if (badblk++ >= MAXBAD) {
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pwarn("EXCESSIVE BAD BLKS I=%u",
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idesc->id_number);
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if (preen)
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printf(" (SKIPPING)\n");
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else if (reply("CONTINUE") == 0) {
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markclean = 0;
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ckfini();
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exit(EEXIT);
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}
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return (STOP);
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}
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}
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for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
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if (anyout && chkrange(blkno, 1)) {
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res = SKIP;
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} else if (!testbmap(blkno)) {
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n_blks++;
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setbmap(blkno);
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} else {
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blkerror(idesc->id_number, "DUP", blkno);
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if (dupblk++ >= MAXDUP) {
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pwarn("EXCESSIVE DUP BLKS I=%u",
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idesc->id_number);
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if (preen)
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printf(" (SKIPPING)\n");
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else if (reply("CONTINUE") == 0) {
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markclean = 0;
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ckfini();
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exit(EEXIT);
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}
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return (STOP);
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}
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new = (struct dups *)malloc(sizeof(struct dups));
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if (new == NULL) {
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markclean = 0;
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pfatal("DUP TABLE OVERFLOW.");
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if (reply("CONTINUE") == 0) {
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markclean = 0;
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ckfini();
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exit(EEXIT);
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}
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return (STOP);
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}
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new->dup = blkno;
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if (muldup == 0) {
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duplist = muldup = new;
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new->next = 0;
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} else {
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new->next = muldup->next;
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muldup->next = new;
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}
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for (dlp = duplist; dlp != muldup; dlp = dlp->next)
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if (dlp->dup == blkno)
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break;
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if (dlp == muldup && dlp->dup != blkno)
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muldup = new;
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}
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/*
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* count the number of blocks found in id_entryno
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*/
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idesc->id_entryno++;
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}
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return (res);
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}
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