520 lines
12 KiB
C
520 lines
12 KiB
C
/* $NetBSD: main.c,v 1.83 2015/06/16 23:58:30 christos Exp $ */
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/*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__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 8.6 (Berkeley) 5/14/95";
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#else
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__RCSID("$NetBSD: main.c,v 1.83 2015/06/16 23:58:30 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <sys/resource.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <string.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.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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#include "snapshot.h"
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int progress = 0;
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volatile sig_atomic_t returntosingle = 0;
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static int argtoi(int, const char *, const char *, int);
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static int checkfilesys(const char *, const char *, int);
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__dead static void usage(void);
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int
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main(int argc, char *argv[])
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{
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struct rlimit r;
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int ch;
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int ret = FSCK_EXIT_OK;
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char *snap_backup = NULL;
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int snap_internal = 0;
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ckfinish = ckfini;
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if (getrlimit(RLIMIT_DATA, &r) == 0) {
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r.rlim_cur = r.rlim_max;
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(void) setrlimit(RLIMIT_DATA, &r);
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}
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sync();
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skipclean = 1;
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markclean = 1;
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forceimage = 0;
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endian = 0;
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isappleufs = 0;
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while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) {
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switch (ch) {
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case 'a':
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isappleufs = 1;
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break;
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case 'B':
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if (strcmp(optarg, "be") == 0)
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endian = BIG_ENDIAN;
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else if (strcmp(optarg, "le") == 0)
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endian = LITTLE_ENDIAN;
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else usage();
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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 > 4) {
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cvtlevel = 4;
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warnx("Using maximum conversion level of %d",
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cvtlevel);
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}
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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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forceimage = 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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errx(FSCK_EXIT_USAGE, "bad mode to -m: %o",
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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 = 1;
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break;
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case 'q':
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quiet++;
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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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case 'x':
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snap_backup = optarg;
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break;
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case 'X':
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snap_internal = 1;
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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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if (snap_backup || snap_internal) {
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if (!nflag || yflag) {
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warnx("Cannot use -x or -X without -n");
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snap_backup = NULL;
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snap_internal = 0;
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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 (debug)
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progress = 0;
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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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#ifdef PROGRESS
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if (progress) {
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progress_ttywidth(0);
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(void)signal(SIGWINCH, progress_ttywidth);
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}
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#endif /* ! PROGRESS */
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signal(SIGINFO, infohandler);
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while (argc-- > 0) {
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int nret;
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char *path;
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if (!forceimage)
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path = strdup(blockcheck(*argv));
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else
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path = strdup(*argv);
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if (path == NULL)
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pfatal("Can't check %s\n", *argv);
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if (snap_backup || snap_internal) {
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char *snap_dev;
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int snapfd;
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snapfd = snap_open(*argv, snap_backup, NULL, &snap_dev);
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if (snapfd < 0) {
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warn("can't take snapshot of %s", *argv);
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goto next;
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}
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nret = checkfilesys(blockcheck(snap_dev), path, 0);
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if (ret < nret)
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ret = nret;
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close(snapfd);
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} else {
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nret = checkfilesys(path, path, 0);
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if (ret < nret)
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ret = nret;
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}
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next:
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free(path);
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argv++;
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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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errx(FSCK_EXIT_USAGE, "-%c flag requires a %s",
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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, const char *origfs, 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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#ifdef LITE2BORKEN
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int flags;
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#endif
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#ifdef PROGRESS
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/*
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* In prune mode, how far does the progress bar travel during
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* each pass? (In non-prune mode, each pass has a separate
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* progress bar that travels from 0 to 100%.)
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*
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* The numbers below are percentages, intended to correspond
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* roughly to the cumulative time up to the end of each pass.
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* They don't have to be accurate. In reality, on a large
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* file system, Pass 1 and Pass 2 together are likely to use
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* significantly more than the 95% reflected below, so users
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* will get a pleasant surprise when the last 5% of the progress
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* bar runs more quickly than they had expected.
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*/
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static int progress_limits[] = {0, 20, 95, 96, 97, 100};
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#endif /* PROGRESS */
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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, origfs)) {
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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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/* fall through */
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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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* 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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#ifdef PROGRESS
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progress_switch(progress);
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progress_init();
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#endif /* PROGRESS */
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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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pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt);
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if (hotroot())
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pwarn("** Root file system\n");
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pwarn("** Phase 1 - Check Blocks and Sizes\n");
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}
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#ifdef PROGRESS
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if (preen)
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progress_setrange(0, progress_limits[1]);
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#endif /* PROGRESS */
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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\n");
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if (usedsoftdep)
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pfatal("INTERNAL ERROR: dups with softdep\n");
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pwarn("** 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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pwarn("** Phase 2 - Check Pathnames\n");
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#ifdef PROGRESS
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if (preen)
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progress_sethighlim(progress_limits[2]);
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#endif /* PROGRESS */
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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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pwarn("** Phase 3 - Check Connectivity\n");
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#ifdef PROGRESS
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if (preen)
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progress_sethighlim(progress_limits[3]);
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#endif /* PROGRESS */
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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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pwarn("** Phase 4 - Check Reference Counts\n");
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#ifdef PROGRESS
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if (preen)
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progress_sethighlim(progress_limits[4]);
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#endif /* PROGRESS */
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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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pwarn("** Phase 5 - Check Cyl groups\n");
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#ifdef PROGRESS
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if (preen)
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progress_sethighlim(progress_limits[5]);
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#endif /* PROGRESS */
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pass5();
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if (uquot_user_hash != NULL) {
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if (preen == 0)
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pwarn("** Phase 6 - Check Quotas\n");
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pass6();
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}
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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("%llu files, %lld used, %lld free ",
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(unsigned long long)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 / (daddr_t)sblock->fs_dsize),
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(long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2)
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/ (daddr_t)sblock->fs_dsize) % 10));
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if (debug &&
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(n_files -= maxino - UFS_ROOTINO - sblock->fs_cstotal.cs_nifree))
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printf("%llu files missing\n", (unsigned long long)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 = (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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sblock->fs_time = time(NULL);
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sbdirty();
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}
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if (rerun)
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markclean = 0;
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#if LITE2BORKEN
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if (!hotroot()) {
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ckfini(1);
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} else {
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struct statvfs stfs_buf;
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/*
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* Check to see if root is mounted read-write.
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*/
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if (statvfs("/", &stfs_buf) == 0)
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flags = stfs_buf.f_flag;
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else
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flags = 0;
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if (markclean)
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markclean = flags & MNT_RDONLY;
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ckfini(1);
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}
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#else
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ckfini(1);
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#endif
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for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
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if (inostathead[cylno].il_stat != NULL)
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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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if (!resolved || rerun) {
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pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n");
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returntosingle = 1;
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}
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if (!fsmodified)
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return FSCK_EXIT_OK;
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if (!preen)
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pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
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if (rerun)
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pwarn("\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_FFS, "/", 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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pwarn("\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 [-adFfPpqUX] [-B byteorder] [-b block] [-c level] "
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"[-m mode]\n"
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"\t[-x snap-backup] [-y | -n] filesystem ...\n",
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getprogname());
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exit(FSCK_EXIT_USAGE);
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}
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