395 lines
11 KiB
C
395 lines
11 KiB
C
/* $NetBSD: pass1.c,v 1.21 2010/02/04 23:55:42 christos 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. 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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/*
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* Copyright (c) 1997 Manuel Bouyer.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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 8.1 (Berkeley) 6/5/93";
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#else
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__RCSID("$NetBSD: pass1.c,v 1.21 2010/02/04 23:55:42 christos 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/ext2fs/ext2fs_dinode.h>
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#include <ufs/ext2fs/ext2fs_dir.h>
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#include <ufs/ext2fs/ext2fs.h>
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#include <ufs/ufs/dinode.h> /* for IFMT & friends */
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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 <time.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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#include "exitvalues.h"
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static daddr_t badblk;
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static daddr_t dupblk;
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static void checkinode(ino_t, struct inodesc *);
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void
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pass1(void)
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{
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ino_t inumber;
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int c, i;
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size_t j;
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daddr_t dbase;
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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.e2fs_ncg; c++) {
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dbase = c * sblock.e2fs.e2fs_bpg +
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sblock.e2fs.e2fs_first_dblock;
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/* Mark the blocks used for the inode table */
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if (fs2h32(sblock.e2fs_gd[c].ext2bgd_i_tables) >= dbase) {
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for (i = 0; i < sblock.e2fs_itpg; i++)
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setbmap(
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fs2h32(sblock.e2fs_gd[c].ext2bgd_i_tables)
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+ i);
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}
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/* Mark the blocks used for the block bitmap */
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if (fs2h32(sblock.e2fs_gd[c].ext2bgd_b_bitmap) >= dbase)
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setbmap(fs2h32(sblock.e2fs_gd[c].ext2bgd_b_bitmap));
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/* Mark the blocks used for the inode bitmap */
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if (fs2h32(sblock.e2fs_gd[c].ext2bgd_i_bitmap) >= dbase)
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setbmap(fs2h32(sblock.e2fs_gd[c].ext2bgd_i_bitmap));
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if (sblock.e2fs.e2fs_rev == E2FS_REV0 ||
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(sblock.e2fs.e2fs_features_rocompat &
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EXT2F_ROCOMPAT_SPARSESUPER) == 0 ||
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cg_has_sb(c)) {
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/* Mark copuy of SB and descriptors */
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setbmap(dbase);
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for (i = 1; i <= sblock.e2fs_ngdb; i++)
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setbmap(dbase+i);
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}
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if (c == 0) {
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for(i = 0; i < dbase; i++)
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setbmap(i);
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}
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}
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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 = 1;
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n_files = n_blks = 0;
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resetinodebuf();
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for (c = 0; c < sblock.e2fs_ncg; c++) {
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for (j = 0;
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j < sblock.e2fs.e2fs_ipg && inumber <= sblock.e2fs.e2fs_icount;
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j++, inumber++) {
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if (inumber < EXT2_ROOTINO) /* XXX */
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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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}
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static void
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checkinode(ino_t inumber, struct inodesc *idesc)
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{
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struct ext2fs_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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dp = getnextinode(inumber);
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if (inumber < EXT2_FIRSTINO &&
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inumber != EXT2_ROOTINO &&
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!(inumber == EXT2_RESIZEINO &&
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(sblock.e2fs.e2fs_features_compat & EXT2F_COMPAT_RESIZE) != 0))
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return;
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mode = fs2h16(dp->e2di_mode) & IFMT;
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if (mode == 0 || (dp->e2di_dtime != 0 && dp->e2di_nlink == 0)) {
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if (mode == 0 && (
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memcmp(dp->e2di_blocks, zino.e2di_blocks,
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(NDADDR + NIADDR) * sizeof(u_int32_t)) ||
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dp->e2di_mode || inosize(dp))) {
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pfatal("PARTIALLY ALLOCATED INODE I=%llu",
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(unsigned long long)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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}
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}
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#ifdef notyet /* it seems that dtime == 0 is valid for a unallocated inode */
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if (dp->e2di_dtime == 0) {
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pwarn("DELETED INODE I=%llu HAS A NULL DTIME",
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(unsigned long long)inumber);
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if (preen) {
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printf(" (CORRECTED)\n");
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}
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if (preen || reply("CORRECT")) {
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time_t t;
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time(&t);
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dp->e2di_dtime = h2fs32(t);
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dp = ginode(inumber);
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inodirty();
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}
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}
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#endif
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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->e2di_dtime != 0) {
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pwarn("INODE I=%llu HAS DTIME=%s",
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(unsigned long long)inumber,
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print_mtime(fs2h32(dp->e2di_dtime)));
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if (preen) {
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printf(" (CORRECTED)\n");
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}
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if (preen || reply("CORRECT")) {
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dp = ginode(inumber);
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dp->e2di_dtime = 0;
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inodirty();
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}
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}
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if (inosize(dp) + sblock.e2fs_bsize - 1 < inosize(dp)) {
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if (debug)
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printf("bad size %llu:", (unsigned long long)inosize(dp));
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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->e2di_mode = h2fs16(IFREG|0600);
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inossize(dp, sblock.e2fs_bsize);
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inodirty();
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}
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ndb = howmany(inosize(dp), sblock.e2fs_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)inosize(dp), 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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* 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 (inosize(dp) < EXT2_MAXSYMLINKLEN ||
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(EXT2_MAXSYMLINKLEN == 0 && dp->e2di_blocks == 0)) {
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ndb = howmany(inosize(dp), sizeof(u_int32_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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/* Linux puts things in blocks for FIFO, so skip this check */
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if (mode != IFIFO) {
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for (j = ndb; j < NDADDR; j++)
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if (dp->e2di_blocks[j] != 0) {
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if (debug)
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printf("bad direct addr: %d\n",
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fs2h32(dp->e2di_blocks[j]));
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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->e2di_blocks[j+NDADDR] != 0) {
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if (debug)
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printf("bad indirect addr: %d\n",
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fs2h32(dp->e2di_blocks[j+NDADDR]));
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goto unknown;
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}
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}
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}
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if (ftypeok(dp) == 0)
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goto unknown;
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if (inumber >= EXT2_FIRSTINO || inumber == EXT2_ROOTINO) {
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/* Don't count reserved inodes except root */
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n_files++;
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}
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lncntp[inumber] = fs2h16(dp->e2di_nlink);
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if (dp->e2di_nlink == 0) {
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zlnp = malloc(sizeof *zlnp);
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if (zlnp == NULL) {
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pfatal("LINK COUNT TABLE OVERFLOW");
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if (reply("CONTINUE") == 0)
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exit(FSCK_EXIT_CHECK_FAILED);
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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 (inosize(dp) == 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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}
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typemap[inumber] = E2IFTODT(mode);
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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.e2fs_bsize);
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if (fs2h32(dp->e2di_nblock) != (uint32_t)idesc->id_entryno) {
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pwarn("INCORRECT BLOCK COUNT I=%llu (%d should be %d)",
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(unsigned long long)inumber, fs2h32(dp->e2di_nblock),
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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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return;
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dp = ginode(inumber);
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dp->e2di_nblock = h2fs32(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=%llu", (unsigned long long)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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}
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}
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int
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pass1check(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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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=%llu",
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(unsigned long long)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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exit(FSCK_EXIT_CHECK_FAILED);
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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=%llu",
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(unsigned long long)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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exit(FSCK_EXIT_CHECK_FAILED);
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return (STOP);
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}
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new = malloc(sizeof(struct dups));
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if (new == NULL) {
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pfatal("DUP TABLE OVERFLOW.");
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if (reply("CONTINUE") == 0)
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exit(FSCK_EXIT_CHECK_FAILED);
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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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