392 lines
9.6 KiB
C
392 lines
9.6 KiB
C
/* $NetBSD: main.c,v 1.41 2020/04/05 15:25:39 joerg 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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__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94";
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#else
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__RCSID("$NetBSD: main.c,v 1.41 2020/04/05 15:25:39 joerg 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 <sys/mount.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ext2fs/ext2fs_dinode.h>
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#include <ufs/ext2fs/ext2fs.h>
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#include <fstab.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include <signal.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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struct bufarea bufhead;
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struct bufarea sblk;
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struct bufarea asblk;
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struct bufarea *pdirbp;
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struct bufarea *pbp;
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struct bufarea *getdatablk(daddr_t, long);
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struct m_ext2fs sblock;
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struct dups *duplist;
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struct dups *muldup;
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struct zlncnt *zlnhead;
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struct inoinfo **inphead, **inpsort;
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long numdirs, listmax, inplast;
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long dev_bsize;
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long secsize;
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char nflag;
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char yflag;
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int bflag;
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int Uflag;
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int debug;
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int preen;
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char havesb;
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char skipclean;
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int fsmodified;
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int fsreadfd;
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int fswritefd;
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int rerun;
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daddr_t maxfsblock;
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char *blockmap;
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ino_t maxino;
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ino_t lastino;
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char *statemap;
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u_char *typemap;
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int16_t *lncntp;
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ino_t lfdir;
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daddr_t n_blks;
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daddr_t n_files;
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struct ext2fs_dinode zino;
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static int argtoi(int, const char *, const char *, int);
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static int checkfilesys(const char *, char *, long, int);
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static void usage(void) __dead;
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int
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main(int argc, char *argv[])
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{
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int ch;
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int ret = FSCK_EXIT_OK;
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ckfinish = ckfini;
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sync();
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skipclean = 1;
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while ((ch = getopt(argc, argv, "b:dfm:npPqUy")) != -1) {
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switch (ch) {
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case 'b':
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skipclean = 0;
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bflag = argtoi('b', "number", optarg, 10);
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printf("Alternate super block location: %d\n", bflag);
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break;
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case 'd':
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debug++;
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break;
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case 'f':
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skipclean = 0;
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break;
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case 'm':
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lfmode = argtoi('m', "mode", optarg, 8);
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if (lfmode &~ 07777)
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errexit("bad mode to -m: %o", lfmode);
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printf("** lost+found creation mode %o\n", lfmode);
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break;
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case 'n':
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nflag++;
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yflag = 0;
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break;
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case 'p':
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preen++;
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break;
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case 'P':
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/* Progress meter not implemented. */
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break;
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case 'q': /* Quiet not implemented */
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break;
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#ifndef SMALL
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case 'U':
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Uflag++;
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break;
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#endif
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case 'y':
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yflag++;
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nflag = 0;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (!argc)
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usage();
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if (signal(SIGINT, SIG_IGN) != SIG_IGN)
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(void)signal(SIGINT, catch);
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if (preen)
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(void)signal(SIGQUIT, catchquit);
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while (argc-- > 0) {
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int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0);
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if (ret < nret)
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ret = nret;
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}
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return returntosingle ? FSCK_EXIT_UNRESOLVED : ret;
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}
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static int
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argtoi(int flag, const char *req, const char *str, int base)
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{
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char *cp;
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int ret;
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ret = (int)strtol(str, &cp, base);
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if (cp == str || *cp)
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errexit("-%c flag requires a %s", flag, req);
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return (ret);
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}
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/*
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* Check the specified filesystem.
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*/
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/* ARGSUSED */
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static int
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checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
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{
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daddr_t n_bfree;
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struct dups *dp;
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struct zlncnt *zlnp;
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int i;
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if (preen && child)
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(void)signal(SIGQUIT, voidquit);
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setcdevname(filesys, preen);
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if (debug && preen)
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pwarn("starting\n");
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switch (setup(filesys)) {
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case 0:
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if (preen)
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pfatal("CAN'T CHECK FILE SYSTEM.");
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/* FALLTHROUGH */
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case -1:
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return FSCK_EXIT_OK;
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}
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/*
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* 1: scan inodes tallying blocks used
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*/
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if (preen == 0) {
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if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
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printf("** Last Mounted on %s\n",
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sblock.e2fs.e2fs_fsmnt);
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}
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if (hotroot())
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printf("** Root file system\n");
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printf("** Phase 1 - Check Blocks and Sizes\n");
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}
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pass1();
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/*
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* 1b: locate first references to duplicates, if any
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*/
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if (duplist) {
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if (preen)
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pfatal("INTERNAL ERROR: dups with -p");
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printf("** Phase 1b - Rescan For More DUPS\n");
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pass1b();
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}
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/*
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* 2: traverse directories from root to mark all connected directories
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*/
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if (preen == 0)
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printf("** Phase 2 - Check Pathnames\n");
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pass2();
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/*
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* 3: scan inodes looking for disconnected directories
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*/
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if (preen == 0)
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printf("** Phase 3 - Check Connectivity\n");
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pass3();
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/*
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* 4: scan inodes looking for disconnected files; check reference counts
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*/
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if (preen == 0)
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printf("** Phase 4 - Check Reference Counts\n");
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pass4();
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/*
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* 5: check and repair resource counts in cylinder groups
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*/
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if (preen == 0)
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printf("** Phase 5 - Check Cyl groups\n");
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pass5();
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/*
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* print out summary statistics
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*/
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n_bfree = sblock.e2fs.e2fs_fbcount;
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pwarn("%lld files, %lld used, %lld free\n",
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(long long)n_files, (long long)n_blks, (long long)n_bfree);
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if (debug &&
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/* 9 reserved and unused inodes in FS */
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(n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
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printf("%lld files missing\n", (long long)n_files);
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if (debug) {
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for (i = 0; i < sblock.e2fs_ncg; i++)
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n_blks += cgoverhead(i);
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n_blks += sblock.e2fs.e2fs_first_dblock;
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if (n_blks -= maxfsblock - n_bfree)
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printf("%lld blocks missing\n", (long long)n_blks);
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if (duplist != NULL) {
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printf("The following duplicate blocks remain:");
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for (dp = duplist; dp; dp = dp->next)
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printf(" %lld,", (long long)dp->dup);
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printf("\n");
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}
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if (zlnhead != NULL) {
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printf("The following zero link count inodes remain:");
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for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
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printf(" %llu,",
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(unsigned long long)zlnp->zlncnt);
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printf("\n");
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}
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}
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zlnhead = (struct zlncnt *)0;
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duplist = (struct dups *)0;
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muldup = (struct dups *)0;
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inocleanup();
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if (fsmodified) {
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time_t t;
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(void)time(&t);
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sblock.e2fs.e2fs_wtime = t;
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sblock.e2fs.e2fs_lastfsck = t;
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sbdirty();
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}
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ckfini(1);
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free(blockmap);
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free(statemap);
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free((char *)lncntp);
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if (!fsmodified)
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return FSCK_EXIT_OK;
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if (!preen)
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printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
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if (rerun)
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printf("\n***** PLEASE RERUN FSCK *****\n");
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if (hotroot()) {
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struct statvfs stfs_buf;
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/*
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* We modified the root. Do a mount update on
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* it, unless it is read-write, so we can continue.
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*/
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if (statvfs("/", &stfs_buf) == 0) {
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long flags = stfs_buf.f_flag;
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struct ufs_args args;
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if (flags & MNT_RDONLY) {
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args.fspec = 0;
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flags |= MNT_UPDATE | MNT_RELOAD;
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if (mount(MOUNT_EXT2FS, "/", flags,
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&args, sizeof args) == 0)
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return FSCK_EXIT_OK;
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}
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}
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if (!preen)
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printf("\n***** REBOOT NOW *****\n");
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sync();
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return FSCK_EXIT_ROOT_CHANGED;
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}
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return FSCK_EXIT_OK;
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}
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static void
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usage(void)
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{
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(void) fprintf(stderr,
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"usage: %s [-dfnpUy] [-b block] [-m mode] filesystem ...\n",
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getprogname());
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exit(FSCK_EXIT_USAGE);
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}
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