569 lines
13 KiB
C
569 lines
13 KiB
C
/* $NetBSD: main.c,v 1.72 2008/10/09 18:38:24 wiz 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
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* 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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|
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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 1.72 2008/10/09 18:38:24 wiz Exp $");
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#endif
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#endif /* not lint */
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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 <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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||
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||
#include "fsck.h"
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||
#include "extern.h"
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||
#include "fsutil.h"
|
||
#include "exitvalues.h"
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||
#include "snapshot.h"
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||
|
||
int progress = 0;
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||
int 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);
|
||
static void usage(void);
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||
static char *get_snap_device(char *);
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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;
|
||
char *snap_backup = NULL;
|
||
int snap_internal = 0;
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||
|
||
if (getrlimit(RLIMIT_DATA, &r) == 0) {
|
||
r.rlim_cur = r.rlim_max;
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||
(void) setrlimit(RLIMIT_DATA, &r);
|
||
}
|
||
sync();
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||
skipclean = 1;
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||
markclean = 1;
|
||
forceimage = 0;
|
||
endian = 0;
|
||
isappleufs = 0;
|
||
while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) {
|
||
switch (ch) {
|
||
case 'a':
|
||
isappleufs = 1;
|
||
break;
|
||
|
||
case 'B':
|
||
if (strcmp(optarg, "be") == 0)
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endian = BIG_ENDIAN;
|
||
else if (strcmp(optarg, "le") == 0)
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endian = LITTLE_ENDIAN;
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else usage();
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||
break;
|
||
|
||
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;
|
||
cvtlevel = argtoi('c', "conversion level", optarg, 10);
|
||
if (cvtlevel > 4) {
|
||
cvtlevel = 4;
|
||
warnx("Using maximum conversion level of %d\n",
|
||
cvtlevel);
|
||
}
|
||
break;
|
||
|
||
case 'd':
|
||
debug++;
|
||
break;
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||
|
||
case 'F':
|
||
forceimage = 1;
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||
break;
|
||
|
||
case 'f':
|
||
skipclean = 0;
|
||
break;
|
||
|
||
case 'm':
|
||
lfmode = argtoi('m', "mode", optarg, 8);
|
||
if (lfmode &~ 07777)
|
||
errx(FSCK_EXIT_USAGE, "bad mode to -m: %o",
|
||
lfmode);
|
||
printf("** lost+found creation mode %o\n", lfmode);
|
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break;
|
||
|
||
case 'n':
|
||
nflag++;
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||
yflag = 0;
|
||
break;
|
||
|
||
case 'p':
|
||
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':
|
||
quiet++;
|
||
break;
|
||
#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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||
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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\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 = strdup(blockcheck(*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 *mpt;
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char *snap_dev;
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int snapfd;
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mpt = get_snap_device(*argv);
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if (mpt == NULL)
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goto next;
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snapfd = snap_open(mpt, snap_backup, NULL, &snap_dev);
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if (snapfd < 0) {
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warn("can't take snapshot of %s", mpt);
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free(mpt);
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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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free(mpt);
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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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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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* 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);
|
||
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)
|
||
progress_setrange(0, progress_limits[1]);
|
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#endif /* PROGRESS */
|
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pass1();
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||
|
||
/*
|
||
* 1b: locate first references to duplicates, if any
|
||
*/
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if (duplist) {
|
||
if (preen)
|
||
pfatal("INTERNAL ERROR: dups with -p\n");
|
||
if (usedsoftdep)
|
||
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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}
|
||
|
||
/*
|
||
* 2: traverse directories from root to mark all connected directories
|
||
*/
|
||
if (preen == 0)
|
||
pwarn("** Phase 2 - Check Pathnames\n");
|
||
#ifdef PROGRESS
|
||
if (preen)
|
||
progress_sethighlim(progress_limits[2]);
|
||
#endif /* PROGRESS */
|
||
pass2();
|
||
|
||
/*
|
||
* 3: scan inodes looking for disconnected directories
|
||
*/
|
||
if (preen == 0)
|
||
pwarn("** Phase 3 - Check Connectivity\n");
|
||
#ifdef PROGRESS
|
||
if (preen)
|
||
progress_sethighlim(progress_limits[3]);
|
||
#endif /* PROGRESS */
|
||
pass3();
|
||
|
||
/*
|
||
* 4: scan inodes looking for disconnected files; check reference counts
|
||
*/
|
||
if (preen == 0)
|
||
pwarn("** Phase 4 - Check Reference Counts\n");
|
||
#ifdef PROGRESS
|
||
if (preen)
|
||
progress_sethighlim(progress_limits[4]);
|
||
#endif /* PROGRESS */
|
||
pass4();
|
||
|
||
/*
|
||
* 5: check and repair resource counts in cylinder groups
|
||
*/
|
||
if (preen == 0)
|
||
pwarn("** Phase 5 - Check Cyl groups\n");
|
||
#ifdef PROGRESS
|
||
if (preen)
|
||
progress_sethighlim(progress_limits[5]);
|
||
#endif /* PROGRESS */
|
||
pass5();
|
||
|
||
/*
|
||
* print out summary statistics
|
||
*/
|
||
n_ffree = sblock->fs_cstotal.cs_nffree;
|
||
n_bfree = sblock->fs_cstotal.cs_nbfree;
|
||
pwarn("%llu files, %lld used, %lld free ",
|
||
(unsigned long long)n_files, (long long)n_blks,
|
||
(long long)(n_ffree + sblock->fs_frag * n_bfree));
|
||
printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
|
||
(long long)n_ffree, (long long)n_bfree,
|
||
(long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize),
|
||
(long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2)
|
||
/ (daddr_t)sblock->fs_dsize) % 10));
|
||
if (debug &&
|
||
(n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree))
|
||
printf("%llu files missing\n", (unsigned long long)n_files);
|
||
if (debug) {
|
||
n_blks += sblock->fs_ncg *
|
||
(cgdmin(sblock, 0) - cgsblock(sblock, 0));
|
||
n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0);
|
||
n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize);
|
||
if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree))
|
||
printf("%lld blocks missing\n", (long long)n_blks);
|
||
if (duplist != NULL) {
|
||
printf("The following duplicate blocks remain:");
|
||
for (dp = duplist; dp; dp = dp->next)
|
||
printf(" %lld,", (long long)dp->dup);
|
||
printf("\n");
|
||
}
|
||
if (zlnhead != NULL) {
|
||
printf("The following zero link count inodes remain:");
|
||
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
|
||
printf(" %llu,",
|
||
(unsigned long long)zlnp->zlncnt);
|
||
printf("\n");
|
||
}
|
||
}
|
||
zlnhead = (struct zlncnt *)0;
|
||
duplist = (struct dups *)0;
|
||
muldup = (struct dups *)0;
|
||
inocleanup();
|
||
if (fsmodified) {
|
||
sblock->fs_time = time(NULL);
|
||
sbdirty();
|
||
}
|
||
if (rerun)
|
||
markclean = 0;
|
||
#if LITE2BORKEN
|
||
if (!hotroot()) {
|
||
ckfini();
|
||
} else {
|
||
struct statvfs stfs_buf;
|
||
/*
|
||
* Check to see if root is mounted read-write.
|
||
*/
|
||
if (statvfs("/", &stfs_buf) == 0)
|
||
flags = stfs_buf.f_flag;
|
||
else
|
||
flags = 0;
|
||
if (markclean)
|
||
markclean = flags & MNT_RDONLY;
|
||
ckfini();
|
||
}
|
||
#else
|
||
ckfini();
|
||
#endif
|
||
for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
|
||
if (inostathead[cylno].il_stat != NULL)
|
||
free(inostathead[cylno].il_stat);
|
||
free(inostathead);
|
||
inostathead = NULL;
|
||
|
||
if (!resolved || rerun) {
|
||
pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n");
|
||
returntosingle = 1;
|
||
}
|
||
if (!fsmodified)
|
||
return FSCK_EXIT_OK;
|
||
if (!preen)
|
||
pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
|
||
if (rerun)
|
||
pwarn("\n***** PLEASE RERUN FSCK *****\n");
|
||
if (hotroot()) {
|
||
struct statvfs stfs_buf;
|
||
/*
|
||
* We modified the root. Do a mount update on
|
||
* it, unless it is read-write, so we can continue.
|
||
*/
|
||
if (statvfs("/", &stfs_buf) == 0) {
|
||
long flags = stfs_buf.f_flag;
|
||
struct ufs_args args;
|
||
|
||
if (flags & MNT_RDONLY) {
|
||
args.fspec = 0;
|
||
flags |= MNT_UPDATE | MNT_RELOAD;
|
||
if (mount(MOUNT_FFS, "/", flags,
|
||
&args, sizeof args) == 0)
|
||
return FSCK_EXIT_OK;
|
||
}
|
||
}
|
||
if (!preen)
|
||
pwarn("\n***** REBOOT NOW *****\n");
|
||
sync();
|
||
return FSCK_EXIT_ROOT_CHANGED;
|
||
}
|
||
return FSCK_EXIT_OK;
|
||
}
|
||
|
||
static void
|
||
usage(void)
|
||
{
|
||
|
||
(void) fprintf(stderr,
|
||
"usage: %s [−adFfPpqUX] [−B byteorder] [−b block] [−c level] "
|
||
"[−m mode]\n"
|
||
"\t[-x snap‐backup] [−y | −n] filesystem ...\n",
|
||
getprogname());
|
||
exit(FSCK_EXIT_USAGE);
|
||
}
|
||
|
||
static
|
||
char *get_snap_device(char *file)
|
||
{
|
||
char *mountpoint = NULL;
|
||
struct statvfs *mntbuf, *fs, fsbuf;
|
||
struct stat sb;
|
||
|
||
/* find the mount point */
|
||
if (lstat(file, &sb) == -1) {
|
||
warn("can't stat %s", file);
|
||
return NULL;
|
||
}
|
||
if (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) {
|
||
int mntbufc, i;
|
||
if ((mntbufc = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
|
||
pfatal("can't get mount list: %s\n", strerror(errno));
|
||
for (fs = mntbuf, i = 0;
|
||
i < mntbufc; i++, fs++) {
|
||
if (strcmp(fs->f_fstypename, "ufs") != 0 &&
|
||
strcmp(fs->f_fstypename, "ffs") != 0)
|
||
continue;
|
||
if (fs->f_flag & ST_RDONLY) {
|
||
warnx("Cannot use -x or -X "
|
||
"on read-only filesystem");
|
||
free(mntbuf);
|
||
return NULL;
|
||
}
|
||
if (strcmp(fs->f_mntfromname, unrawname(file)) == 0) {
|
||
mountpoint = strdup(fs->f_mntonname);
|
||
free(mntbuf);
|
||
return mountpoint;
|
||
}
|
||
}
|
||
warnx("Cannot use -x or -X on unmounted device");
|
||
free(mntbuf);
|
||
return NULL;
|
||
}
|
||
if (S_ISDIR(sb.st_mode)) {
|
||
if (statvfs(file, &fsbuf) == -1)
|
||
pfatal("can't statvfs %s: %s\n", file, strerror(errno));
|
||
if (strcmp(fsbuf.f_mntonname, file))
|
||
pfatal("%s is not a mount point\n", file);
|
||
if (fsbuf.f_flag & ST_RDONLY) {
|
||
warnx("Cannot use -x or -X "
|
||
"on read-only filesystem");
|
||
return NULL;
|
||
}
|
||
mountpoint = strdup(file);
|
||
return mountpoint;
|
||
}
|
||
pfatal("%s is not a mount point\n", file);
|
||
return NULL;
|
||
}
|