395 lines
10 KiB
C
395 lines
10 KiB
C
/* $OpenBSD: main.c,v 1.55 2024/02/03 18:51:57 beck Exp $ */
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/* $NetBSD: main.c,v 1.22 1996/10/11 20:15:48 thorpej 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/time.h>
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#include <sys/signal.h>
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#include <sys/mount.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.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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volatile sig_atomic_t returntosingle;
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long long argtoi(int, char *, char *, int);
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int checkfilesys(char *, char *, long, int);
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int main(int, char *[]);
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extern char *__progname;
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struct inostatlist *inostathead;
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struct bufarea bufhead; /* head of list of other blks in filesys */
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struct bufarea sblk; /* file system superblock */
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struct bufarea asblk; /* alternate file system superblock */
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struct bufarea *pdirbp; /* current directory contents */
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struct bufarea *pbp; /* current inode block */
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struct dups *duplist; /* head of dup list */
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struct dups *muldup; /* end of unique duplicate dup block numbers */
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struct zlncnt *zlnhead; /* head of zero link count list */
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struct inoinfo **inphead, **inpsort;
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extern long numdirs, listmax, inplast;
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long secsize; /* actual disk sector size */
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char nflag; /* assume a no response */
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char yflag; /* assume a yes response */
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daddr_t bflag; /* location of alternate super block */
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int debug; /* output debugging info */
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int cvtlevel; /* convert to newer file system format */
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int preen; /* just fix normal inconsistencies */
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char resolved; /* cleared if unresolved changes => not clean */
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char havesb; /* superblock has been read */
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char skipclean; /* skip clean file systems if preening */
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int fsmodified; /* 1 => write done to file system */
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int fsreadfd; /* file descriptor for reading file system */
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int fswritefd; /* file descriptor for writing file system */
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int rerun; /* rerun fsck. Only used in non-preen mode */
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daddr_t maxfsblock; /* number of blocks in the file system */
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char *blockmap; /* ptr to primary blk allocation map */
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ino_t maxino; /* number of inodes in file system */
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ino_t lastino; /* last inode in use */
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ino_t lfdir; /* lost & found directory inode number */
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daddr_t n_blks; /* number of blocks in use */
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int64_t n_files; /* number of files in use */
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struct ufs1_dinode ufs1_zino;
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struct ufs2_dinode ufs2_zino;
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void
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usage(void)
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{
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fprintf(stderr, "usage: %s [-fnpy] [-b block#] [-c level] "
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"[-m mode] filesystem\n", __progname);
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exit(1);
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}
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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 = 0;
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checkroot();
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sync();
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skipclean = 1;
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while ((ch = getopt(argc, argv, "dfpnNyYb:c:m:")) != -1) {
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switch (ch) {
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case 'p':
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preen = 1;
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break;
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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: %lld\n",
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(long long)bflag);
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break;
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case 'c':
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skipclean = 0;
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cvtlevel = argtoi('c', "conversion level", optarg, 10);
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if (cvtlevel < 3)
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errexit("cannot do level %d conversion\n",
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cvtlevel);
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break;
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case 'd':
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debug = 1;
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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\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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case 'N':
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nflag = 1;
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yflag = 0;
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break;
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case 'y':
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case 'Y':
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yflag = 1;
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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 != 1)
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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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catchinfo(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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long long
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argtoi(int flag, char *req, char *str, int base)
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{
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char *cp;
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long long ret;
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ret = strtoll(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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/*
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* Check the specified filesystem.
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*/
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int
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checkfilesys(char *filesys, char *mntpt, long auxdata, int child)
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{
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daddr_t n_ffree, n_bfree;
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struct dups *dp;
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struct zlncnt *zlnp;
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int cylno;
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if (preen && child)
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(void)signal(SIGQUIT, voidquit);
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setcdevname(filesys, NULL, preen);
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if (debug && preen)
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pwarn("starting\n");
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switch (setup(filesys, 0)) {
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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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if (fsreadfd != -1) {
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(void)close(fsreadfd);
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fsreadfd = -1;
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}
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if (fswritefd != -1) {
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(void)close(fswritefd);
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fswritefd = -1;
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}
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return (0);
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}
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info_filesys = filesys;
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/*
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* Cleared if any questions answered no. Used to decide if
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* the superblock should be marked clean.
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*/
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resolved = 1;
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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("** Last Mounted on %s\n", sblock.fs_fsmnt);
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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_ffree = sblock.fs_cstotal.cs_nffree;
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n_bfree = sblock.fs_cstotal.cs_nbfree;
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pwarn("%lld files, %lld used, %lld free ",
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n_files, (long long)n_blks,
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(long long)(n_ffree + sblock.fs_frag * n_bfree));
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printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
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(long long)n_ffree, (long long)n_bfree,
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(long long)((n_ffree * 100) / sblock.fs_dsize),
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(long long)(((n_ffree * 1000 + sblock.fs_dsize / 2) /
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sblock.fs_dsize) % 10));
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if (debug &&
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(n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
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printf("%lld files missing\n", n_files);
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if (debug) {
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n_blks += sblock.fs_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.fs_cssize, sblock.fs_fsize);
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if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * 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 = NULL;
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duplist = NULL;
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muldup = NULL;
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inocleanup();
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if (fsmodified) {
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sblock.fs_time = (time_t)time(NULL);
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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.fs_ncg; cylno++)
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bwrite(fswritefd, (char *)&sblock,
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fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
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}
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if (rerun)
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resolved = 0;
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ckfini(resolved); /* Don't mark fs clean if fsck needs to be re-run */
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for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
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free(inostathead[cylno].il_stat);
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free(inostathead);
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inostathead = NULL;
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free(blockmap);
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blockmap = NULL;
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free(sblock.fs_csp);
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free(sblk.b_un.b_buf);
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free(asblk.b_un.b_buf);
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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 || !resolved)
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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_info.ex_flags = 0;
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args.export_info.ex_root = 0;
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flags |= MNT_UPDATE | MNT_RELOAD;
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ret = mount(MOUNT_FFS, "/", 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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