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/* $OpenBSD: main.c,v 1.49 2015/11/24 21:42:54 deraadt 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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int 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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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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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: %d\n", 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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int |
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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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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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/* |
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* Check the specified filesystem. |
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*/ |
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/* ARGSUSED */ |
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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)) { |
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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 || usedsoftdep) |
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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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} |