565 lines
15 KiB
C
565 lines
15 KiB
C
/* $NetBSD: pass1.c,v 1.49 2011/08/14 12:32:01 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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#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 1.49 2011/08/14 12:32:01 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/stat.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 <ufs/ufs/ufs_bswap.h>
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#include <ufs/ffs/ffs_extern.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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#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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static ino_t lastino;
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void
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pass1(void)
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{
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ino_t inumber, inosused, ninosused, ii;
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size_t inospace;
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int c;
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daddr_t i, cgd;
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struct inodesc idesc;
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struct cg *cgp = cgrp;
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struct inostat *info;
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uint8_t *cp;
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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_func = pass1check;
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n_files = n_blks = 0;
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for (c = 0; c < sblock->fs_ncg; c++) {
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inumber = c * sblock->fs_ipg;
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setinodebuf(inumber);
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getblk(&cgblk, cgtod(sblock, c), sblock->fs_cgsize);
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memcpy(cgp, cgblk.b_un.b_cg, sblock->fs_cgsize);
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if((doswap && !needswap) || (!doswap && needswap))
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ffs_cg_swap(cgblk.b_un.b_cg, cgp, sblock);
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if (is_ufs2)
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inosused = cgp->cg_initediblk;
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else
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inosused = sblock->fs_ipg;
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if (got_siginfo) {
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printf("%s: phase 1: cyl group %d of %d (%d%%)\n",
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cdevname(), c, sblock->fs_ncg,
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c * 100 / sblock->fs_ncg);
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got_siginfo = 0;
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}
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#ifdef PROGRESS
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progress_bar(cdevname(), preen ? NULL : "phase 1",
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c, sblock->fs_ncg);
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#endif /* PROGRESS */
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/*
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* If we are using soft updates, then we can trust the
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* cylinder group inode allocation maps to tell us which
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* inodes are allocated. We will scan the used inode map
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* to find the inodes that are really in use, and then
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* read only those inodes in from disk.
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*/
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if (preen && usedsoftdep) {
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if (!cg_chkmagic(cgp, 0))
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pfatal("CG %d: BAD MAGIC NUMBER\n", c);
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cp = &cg_inosused(cgp, 0)[(inosused - 1) / CHAR_BIT];
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for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
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if (*cp == 0)
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continue;
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for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
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if (*cp & i)
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break;
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inosused--;
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}
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break;
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}
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#ifdef notdef
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if (inosused < 0)
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inosused = 0;
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#endif
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}
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/*
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* Allocate inoinfo structures for the allocated inodes.
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*/
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inostathead[c].il_numalloced = inosused;
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if (inosused == 0) {
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inostathead[c].il_stat = 0;
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continue;
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}
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inospace = inosused * sizeof(*info);
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if (inospace / sizeof(*info) != inosused) {
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pfatal("too many inodes %llu\n", (unsigned long long)
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inosused);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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info = malloc(inospace);
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if (info == NULL) {
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pfatal("cannot alloc %zu bytes for inoinfo\n",
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inospace);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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(void)memset(info, 0, inospace);
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inostathead[c].il_stat = info;
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/*
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* Scan the allocated inodes.
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*/
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for (ii = 0; ii < inosused; ii++, inumber++) {
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if (inumber < ROOTINO) {
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(void)getnextinode(inumber);
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continue;
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}
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checkinode(inumber, &idesc);
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}
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lastino += 1;
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if (inosused < (ino_t)sblock->fs_ipg || inumber == lastino)
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continue;
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/*
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* If we were not able to determine in advance which inodes
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* were in use, then reduce the size of the inoinfo structure
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* to the size necessary to describe the inodes that we
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* really found.
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*/
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if (lastino < (c * (ino_t)sblock->fs_ipg))
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ninosused = 0;
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else
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ninosused = lastino - (c * sblock->fs_ipg);
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inostathead[c].il_numalloced = ninosused;
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if (ninosused == 0) {
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free(inostathead[c].il_stat);
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inostathead[c].il_stat = 0;
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continue;
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}
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if (ninosused != inosused) {
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struct inostat *ninfo;
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size_t ninospace = ninosused * sizeof(*ninfo);
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if (ninospace / sizeof(*info) != ninosused) {
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pfatal("too many inodes %llu\n",
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(unsigned long long)ninosused);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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ninfo = realloc(info, ninospace);
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if (ninfo == NULL) {
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pfatal("cannot realloc %zu bytes to %zu "
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"for inoinfo\n", inospace, ninospace);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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if (ninosused > inosused)
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(void)memset(&ninfo[inosused], 0, ninospace - inospace);
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inostathead[c].il_stat = ninfo;
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}
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}
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#ifdef PROGRESS
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if (!preen)
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progress_done();
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#endif /* PROGRESS */
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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(ino_t inumber, struct inodesc *idesc)
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{
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union dinode *dp;
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struct zlncnt *zlnp;
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daddr_t ndb;
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int j;
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mode_t mode;
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u_int64_t size, kernmaxfilesize;
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int64_t blocks;
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char symbuf[MAXBSIZE];
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struct inostat *info;
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uid_t uid;
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gid_t gid;
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dp = getnextinode(inumber);
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info = inoinfo(inumber);
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mode = iswap16(DIP(dp, mode)) & IFMT;
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size = iswap64(DIP(dp, size));
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uid = iswap32(DIP(dp, uid));
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gid = iswap32(DIP(dp, gid));
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if (mode == 0) {
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if ((is_ufs2 &&
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(memcmp(dp->dp2.di_db, ufs2_zino.di_db,
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NDADDR * sizeof(int64_t)) ||
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memcmp(dp->dp2.di_ib, ufs2_zino.di_ib,
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NIADDR * sizeof(int64_t))))
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||
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(!is_ufs2 &&
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(memcmp(dp->dp1.di_db, ufs1_zino.di_db,
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NDADDR * sizeof(int32_t)) ||
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memcmp(dp->dp1.di_ib, ufs1_zino.di_ib,
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NIADDR * sizeof(int32_t)))) ||
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mode || size) {
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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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} else
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markclean = 0;
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}
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info->ino_state = USTATE;
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return;
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}
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lastino = inumber;
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/* This should match the file size limit in ffs_mountfs(). */
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if (is_ufs2)
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kernmaxfilesize = sblock->fs_maxfilesize;
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else
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kernmaxfilesize = (u_int64_t)0x80000000 * sblock->fs_bsize - 1;
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if (size > kernmaxfilesize || 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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DIP_SET(dp, size, iswap64(sblock->fs_fsize));
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size = sblock->fs_fsize;
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DIP_SET(dp, 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 %lld:",
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(unsigned long long)size, (long long)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 (!is_ufs2 && doinglevel2 &&
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size > 0 && size < MAXSYMLINKLEN_UFS1 &&
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DIP(dp, blocks) != 0) {
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if (bread(fsreadfd, symbuf,
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fsbtodb(sblock, iswap32(DIP(dp, db[0]))),
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(long)secsize) != 0)
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errexit("cannot read symlink");
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if (debug) {
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symbuf[size] = 0;
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printf("convert symlink %llu(%s) "
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"of size %lld\n",
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(unsigned long long)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->dp1.di_db, symbuf, (long)size);
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DIP_SET(dp, 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 ((sblock->fs_maxsymlinklen < 0) ||
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(size < (uint64_t)sblock->fs_maxsymlinklen) ||
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(isappleufs && (size < APPLEUFS_MAXSYMLINKLEN)) ||
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(sblock->fs_maxsymlinklen == 0 && DIP(dp, blocks) == 0)) {
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if (is_ufs2)
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ndb = howmany(size, sizeof(int64_t));
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else
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ndb = howmany(size, sizeof(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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if (ndb < NDADDR) {
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for (j = ndb; j < NDADDR; j++)
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if (DIP(dp, db[j]) != 0) {
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if (debug) {
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if (!is_ufs2)
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printf("bad direct addr ix %d: %d [ndb %lld]\n",
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j, iswap32(dp->dp1.di_db[j]),
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(long long)ndb);
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else
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printf("bad direct addr ix %d: %lld [ndb %lld]\n",
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j, (long long)iswap64(dp->dp2.di_db[j]),
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(long long)ndb);
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}
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goto unknown;
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}
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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 (DIP(dp, ib[j]) != 0) {
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if (debug) {
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if (!is_ufs2)
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printf("bad indirect addr: %d\n",
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iswap32(dp->dp1.di_ib[j]));
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else
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printf("bad indirect addr: %lld\n",
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(long long)iswap64(dp->dp2.di_ib[j]));
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}
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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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info->ino_linkcnt = iswap16(DIP(dp, nlink));
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if (info->ino_linkcnt <= 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(1);
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exit(FSCK_EXIT_CHECK_FAILED);
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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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info->ino_state = DCLEAR;
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else
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info->ino_state = DSTATE;
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cacheino(dp, inumber);
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countdirs++;
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} else
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info->ino_state = FSTATE;
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info->ino_type = IFTODT(mode);
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if (!is_ufs2 && doinglevel2 &&
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(iswap16(dp->dp1.di_ouid) != (u_short)-1 ||
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iswap16(dp->dp1.di_ogid) != (u_short)-1)) {
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dp = ginode(inumber);
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dp->dp1.di_uid = iswap32(iswap16(dp->dp1.di_ouid));
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dp->dp1.di_ouid = iswap16(-1);
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dp->dp1.di_gid = iswap32(iswap16(dp->dp1.di_ogid));
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dp->dp1.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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idesc->id_uid = iswap32(DIP(dp, uid));
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idesc->id_gid = iswap32(DIP(dp, gid));
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if (iswap32(DIP(dp, flags)) & SF_SNAPSHOT)
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idesc->id_type = SNAP;
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else
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idesc->id_type = ADDR;
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(void)ckinode(dp, idesc);
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#ifdef notyet
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if (is_ufs2 && iswap32(dp->dp2.di_extsize) > 0) {
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int ret, offset;
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idesc->id_type = ADDR;
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ndb = howmany(iswap32(dp->dp2.di_extsize), sblock->fs_bsize);
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for (j = 0; j < NXADDR; j++) {
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if (--ndb == 0 &&
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(offset = blkoff(sblock, iswap32(dp->dp2.di_extsize))) != 0)
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idesc->id_numfrags = numfrags(sblock,
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fragroundup(sblock, offset));
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else
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idesc->id_numfrags = sblock->fs_frag;
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if (dp->dp2.di_extb[j] == 0)
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continue;
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idesc->id_blkno = iswap64(dp->dp2.di_extb[j]);
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ret = (*idesc->id_func)(idesc);
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if (ret & STOP)
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break;
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}
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}
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#endif
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idesc->id_entryno *= btodb(sblock->fs_fsize);
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if (is_ufs2)
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blocks = iswap64(dp->dp2.di_blocks);
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else
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blocks = iswap32(dp->dp1.di_blocks);
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if (blocks != idesc->id_entryno) {
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pwarn("INCORRECT BLOCK COUNT I=%llu (%lld should be %lld)",
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(unsigned long long)inumber, (long long)blocks,
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(long long)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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if (is_ufs2)
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dp->dp2.di_blocks = iswap64(idesc->id_entryno);
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else
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dp->dp1.di_blocks = iswap32((int32_t)idesc->id_entryno);
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inodirty();
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}
|
|
if (idesc->id_type != SNAP)
|
|
update_uquot(inumber, idesc->id_uid, idesc->id_gid,
|
|
idesc->id_entryno, 1);
|
|
return;
|
|
unknown:
|
|
pfatal("UNKNOWN FILE TYPE I=%llu", (unsigned long long)inumber);
|
|
info->ino_state = FCLEAR;
|
|
if (reply("CLEAR") == 1) {
|
|
info->ino_state = USTATE;
|
|
dp = ginode(inumber);
|
|
clearinode(dp);
|
|
inodirty();
|
|
} else
|
|
markclean = 0;
|
|
}
|
|
|
|
int
|
|
pass1check(struct inodesc *idesc)
|
|
{
|
|
int res = KEEPON;
|
|
int anyout, nfrags;
|
|
daddr_t blkno = idesc->id_blkno;
|
|
struct dups *dlp;
|
|
struct dups *new;
|
|
|
|
if (idesc->id_type == SNAP) {
|
|
if (blkno == BLK_NOCOPY || blkno == BLK_SNAP)
|
|
return (KEEPON);
|
|
}
|
|
if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) {
|
|
blkerror(idesc->id_number, "BAD", blkno);
|
|
if (badblk++ >= MAXBAD) {
|
|
pwarn("EXCESSIVE BAD BLKS I=%llu",
|
|
(unsigned long long)idesc->id_number);
|
|
if (preen)
|
|
printf(" (SKIPPING)\n");
|
|
else if (reply("CONTINUE") == 0) {
|
|
markclean = 0;
|
|
ckfini(1);
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
return (STOP);
|
|
}
|
|
}
|
|
for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
|
|
if (anyout && chkrange(blkno, 1)) {
|
|
res = SKIP;
|
|
} else if (!testbmap(blkno)) {
|
|
n_blks++;
|
|
setbmap(blkno);
|
|
} else {
|
|
blkerror(idesc->id_number, "DUP", blkno);
|
|
if (dupblk++ >= MAXDUP) {
|
|
pwarn("EXCESSIVE DUP BLKS I=%llu",
|
|
(unsigned long long)idesc->id_number);
|
|
if (preen)
|
|
printf(" (SKIPPING)\n");
|
|
else if (reply("CONTINUE") == 0) {
|
|
markclean = 0;
|
|
ckfini(1);
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
return (STOP);
|
|
}
|
|
new = (struct dups *)malloc(sizeof(struct dups));
|
|
if (new == NULL) {
|
|
markclean = 0;
|
|
pfatal("DUP TABLE OVERFLOW.");
|
|
if (reply("CONTINUE") == 0) {
|
|
markclean = 0;
|
|
ckfini(1);
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
return (STOP);
|
|
}
|
|
new->dup = blkno;
|
|
if (muldup == 0) {
|
|
duplist = muldup = new;
|
|
new->next = 0;
|
|
} else {
|
|
new->next = muldup->next;
|
|
muldup->next = new;
|
|
}
|
|
for (dlp = duplist; dlp != muldup; dlp = dlp->next)
|
|
if (dlp->dup == blkno)
|
|
break;
|
|
if (dlp == muldup && dlp->dup != blkno)
|
|
muldup = new;
|
|
}
|
|
/*
|
|
* count the number of blocks found in id_entryno
|
|
*/
|
|
idesc->id_entryno++;
|
|
}
|
|
return (res);
|
|
}
|