411 lines
9.6 KiB
C
411 lines
9.6 KiB
C
/* $Id: main.c,v 1.1 1999/03/18 02:02:19 perseant Exp $ */
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/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/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/dinode.h>
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#include <sys/mount.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/lfs/lfs.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 <unistd.h>
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#include <err.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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int returntosingle;
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int fake_cleanseg = -1;
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int main __P((int, char *[]));
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static int argtoi __P((int, char *, char *, int));
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static int checkfilesys __P((const char *, char *, long, int));
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#if 0
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static int docheck __P((struct fstab *));
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#endif
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static void usage __P((void));
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#ifdef DEBUG_IFILE
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void cat_ifile(void);
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#endif
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch;
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int ret = 0;
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extern char *optarg;
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extern int optind;
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#ifndef DEBUG_IFILE
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char *optstring = "b:C:dm:npy";
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#else
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char *optstring = "b:C:dim:npy";
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#endif
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sync();
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skipclean = 1;
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exitonfail = 0;
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while ((ch = getopt(argc, argv, optstring)) != EOF) {
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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 'C':
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fake_cleanseg = atoi(optarg);
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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 'e':
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exitonfail++;
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break;
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#ifdef DEBUG_IFILE
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case 'i':
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debug_ifile++;
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break;
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#endif
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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\n", 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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#if 1
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/* For an LFS filesystem, "preen" means "do nothing" */
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/* XXX should it instead mean "run in background"? */
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exit(0);
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#else
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preen++;
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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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#ifndef NOTYET
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if(nflag==0) {
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errexit("fsck_lfs cannot write to the filesystem yet; the -n flag is required.\n");
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}
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#endif
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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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(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
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if (returntosingle)
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ret = 2;
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exit(ret);
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}
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static int
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argtoi(flag, req, str, base)
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int flag;
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char *req, *str;
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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\n", flag, req);
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return (ret);
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}
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#if 0
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/*
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* Determine whether a filesystem should be checked.
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*/
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static int
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docheck(fsp)
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register struct fstab *fsp;
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{
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if ((strcmp(fsp->fs_vfstype, "ufs") &&
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strcmp(fsp->fs_vfstype, "ffs")) ||
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(strcmp(fsp->fs_type, FSTAB_RW) &&
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strcmp(fsp->fs_type, FSTAB_RO)) ||
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fsp->fs_passno == 0)
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return (0);
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return (1);
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}
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#endif
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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(filesys, mntpt, auxdata, child)
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const char *filesys;
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char *mntpt;
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long auxdata;
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int child;
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{
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daddr_t n_ffree=0, n_bfree=0;
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struct dups *dp;
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struct zlncnt *zlnp;
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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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case -1:
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return (0);
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}
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#ifdef DEBUG_IFILE
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if(debug_ifile==0 && preen == 0)
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#else
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if(preen == 0)
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#endif
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{
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printf("** Last Mounted on %s\n", sblock.lfs_fsmnt);
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if (hotroot())
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printf("** Root file system\n");
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}
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/*
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* 0: check segment checksums, inode ranges
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*/
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#ifdef DEBUG_IFILE
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if (debug_ifile==0 && preen == 0) {
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#else
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if (preen == 0) {
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#endif
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printf("** Phase 0 - Check Segment Summaries\n");
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}
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pass0();
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#ifdef DEBUG_IFILE
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if(debug_ifile) {
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cat_ifile();
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exit(0);
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}
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#endif
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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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printf("** Phase 1 - Check Blocks and Sizes\n");
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}
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pass1();
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#if 0 /* FFS */
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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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#endif
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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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#if 0 /* FFS */
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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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#endif
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/*
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* print out summary statistics
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*/
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#if 0 /* FFS-specific */
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n_ffree = sblock.lfs_cstotal.cs_nffree;
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n_bfree = sblock.lfs_cstotal.cs_nbfree;
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#endif
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pwarn("%d files, %d used, %d free ",
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n_files, n_blks, n_ffree + sblock.lfs_frag * n_bfree);
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#if 0 /* FFS */
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printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n",
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n_ffree, n_bfree, (n_ffree * 100) / sblock.lfs_dsize,
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((n_ffree * 1000 + sblock.lfs_dsize / 2) / sblock.lfs_dsize) % 10);
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if (debug &&
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(n_files -= maxino - ROOTINO - sblock.lfs_cstotal.cs_nifree))
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printf("%d files missing\n", n_files);
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#else
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putchar('\n');
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#endif
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if (debug) {
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#if 0 /* FFS */
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n_blks += sblock.lfs_ncg *
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(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
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n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
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n_blks += howmany(sblock.lfs_cssize, sblock.lfs_fsize);
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if (n_blks -= maxfsblock - (n_ffree + sblock.lfs_frag * n_bfree))
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printf("%d blocks missing\n", n_blks);
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#endif
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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(" %d,", 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(" %u,", 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 0 /* no explicit dirty marker in LFS */
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if (fsmodified) {
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(void)time(&sblock.lfs_tstamp);
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sbdirty();
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}
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if (cvtlevel && sblk.b_dirty) {
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/*
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* Write out the duplicate super blocks
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*/
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for (cylno = 0; cylno < sblock.lfs_ncg; cylno++)
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bwrite(fswritefd, (char *)&sblock,
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fsbtodb(&sblock, cgsblock(&sblock, cylno)), LFS_SBPAD);
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}
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#endif
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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 (0);
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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 statfs 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 (statfs("/", &stfs_buf) == 0) {
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long flags = stfs_buf.f_flags;
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struct ufs_args args;
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int ret;
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if (flags & MNT_RDONLY) {
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args.fspec = 0;
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args.export.ex_flags = 0;
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args.export.ex_root = 0;
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flags |= MNT_UPDATE | MNT_RELOAD;
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ret = mount(MOUNT_LFS, "/", flags, &args);
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if (ret == 0)
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return(0);
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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 (4);
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}
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return (0);
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}
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static void
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usage()
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{
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extern char *__progname;
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(void) fprintf(stderr,
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"Usage: %s [-dnpy] [-b block] [-m mode] filesystem ...\n",
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__progname);
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exit(1);
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}
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