OpenBSD-4.6/sbin/fsck_ext2fs/main.c
/* $OpenBSD: main.c,v 1.15 2006/04/20 02:24:38 deraadt Exp $ */
/* $NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $ */
/*
* Copyright (c) 1997 Manuel Bouyer.
* Copyright (c) 1980, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1980, 1986, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94";
#else
#if 0
static char rcsid[] = "$NetBSD: main.c,v 1.1 1997/06/11 11:21:50 bouyer Exp $";
#else
static char rcsid[] = "$OpenBSD: main.c,v 1.15 2006/04/20 02:24:38 deraadt Exp $";
#endif
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <ufs/ext2fs/ext2fs_dinode.h>
#include <ufs/ext2fs/ext2fs.h>
#include <fstab.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
volatile sig_atomic_t returntosingle;
int main(int, char *[]);
static int argtoi(int, char *, char *, int);
static int checkfilesys(char *, char *, long, int);
static void usage(void);
int
main(int argc, char *argv[])
{
int ch;
int ret = 0;
sync();
skipclean = 1;
while ((ch = getopt(argc, argv, "b:dfm:npy")) != -1) {
switch (ch) {
case 'b':
skipclean = 0;
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'd':
debug++;
break;
case 'f':
skipclean = 0;
break;
case 'm':
lfmode = argtoi('m', "mode", optarg, 8);
if (lfmode &~ 07777)
errexit("bad mode to -m: %o\n", lfmode);
printf("** lost+found creation mode %o\n", lfmode);
break;
case 'n':
nflag++;
yflag = 0;
break;
case 'p':
preen++;
break;
case 'y':
yflag++;
nflag = 0;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (!argc)
usage();
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
while (argc-- > 0)
(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
if (returntosingle)
ret = 2;
exit(ret);
}
static int
argtoi(int flag, char *req, char *str, int base)
{
char *cp;
int ret;
ret = (int)strtol(str, &cp, base);
if (cp == str || *cp)
errexit("-%c flag requires a %s\n", flag, req);
return (ret);
}
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
static int
checkfilesys(char *filesys, char *mntpt, long auxdata, int child)
{
daddr_t n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int i;
if (preen && child)
(void)signal(SIGQUIT, voidquit);
setcdevname(filesys, preen);
if (debug && preen)
pwarn("starting\n");
switch (setup(filesys)) {
case 0:
if (preen)
pfatal("CAN'T CHECK FILE SYSTEM.");
case -1:
return (0);
}
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0) {
if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
printf("** Last Mounted on %s\n",
sblock.e2fs.e2fs_fsmnt);
}
if (hotroot())
printf("** Root file system\n");
printf("** Phase 1 - Check Blocks and Sizes\n");
}
pass1();
/*
* 1b: locate first references to duplicates, if any
*/
if (duplist) {
if (preen)
pfatal("INTERNAL ERROR: dups with -p");
printf("** Phase 1b - Rescan For More DUPS\n");
pass1b();
}
/*
* 2: traverse directories from root to mark all connected directories
*/
if (preen == 0)
printf("** Phase 2 - Check Pathnames\n");
pass2();
/*
* 3: scan inodes looking for disconnected directories
*/
if (preen == 0)
printf("** Phase 3 - Check Connectivity\n");
pass3();
/*
* 4: scan inodes looking for disconnected files; check reference counts
*/
if (preen == 0)
printf("** Phase 4 - Check Reference Counts\n");
pass4();
/*
* 5: check and repair resource counts in cylinder groups
*/
if (preen == 0)
printf("** Phase 5 - Check Cyl groups\n");
pass5();
/*
* print out summary statistics
*/
n_bfree = sblock.e2fs.e2fs_fbcount;
pwarn("%d files, %d used, %d free\n",
n_files, n_blks, n_bfree);
if (debug &&
/* 9 reserved and unused inodes in FS */
(n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
printf("%d files missing\n", n_files);
if (debug) {
for (i = 0; i < sblock.e2fs_ncg; i++)
n_blks += cgoverhead(i);
n_blks += sblock.e2fs.e2fs_first_dblock;
if (n_blks -= maxfsblock - n_bfree)
printf("%d blocks missing\n", n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %d,", dp->dup);
printf("\n");
}
if (zlnhead != NULL) {
printf("The following zero link count inodes remain:");
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
printf(" %u,", zlnp->zlncnt);
printf("\n");
}
}
zlnhead = (struct zlncnt *)0;
duplist = (struct dups *)0;
muldup = (struct dups *)0;
inocleanup();
if (fsmodified) {
time_t t;
(void)time(&t);
sblock.e2fs.e2fs_wtime = t;
sblock.e2fs.e2fs_lastfsck = t;
sbdirty();
}
ckfini(1);
free(blockmap);
free(statemap);
free((char *)lncntp);
if (!fsmodified)
return (0);
if (!preen)
printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (rerun)
printf("\n***** PLEASE RERUN FSCK *****\n");
if (hotroot()) {
struct statfs stfs_buf;
/*
* We modified the root. Do a mount update on
* it, unless it is read-write, so we can continue.
*/
if (statfs("/", &stfs_buf) == 0) {
long flags = stfs_buf.f_flags;
struct ufs_args args;
int ret;
if (flags & MNT_RDONLY) {
args.fspec = 0;
args.export_info.ex_flags = 0;
args.export_info.ex_root = 0;
flags |= MNT_UPDATE | MNT_RELOAD;
ret = mount(MOUNT_EXT2FS, "/", flags, &args);
if (ret == 0)
return(0);
}
}
if (!preen)
printf("\n***** REBOOT NOW *****\n");
sync();
return (4);
}
return (0);
}
static void
usage(void)
{
extern char *__progname;
(void) fprintf(stderr,
"usage: %s [-dfnpy] [-b block#] [-m mode] filesystem ...\n",
__progname);
exit(1);
}