OpenBSD-4.6/sbin/fsck_ffs/main.c
/* $OpenBSD: main.c,v 1.33 2008/06/10 23:10:29 otto Exp $ */
/* $NetBSD: main.c,v 1.22 1996/10/11 20:15:48 thorpej Exp $ */
/*
* 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 const 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
static const char rcsid[] = "$OpenBSD: main.c,v 1.33 2008/06/10 23:10:29 otto Exp $";
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <fstab.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
volatile sig_atomic_t returntosingle;
int argtoi(int, char *, char *, int);
int checkfilesys(char *, char *, long, int);
int docheck(struct fstab *);
int main(int, char *[]);
extern char *__progname;
int
main(int argc, char *argv[])
{
int ch;
int ret = 0;
sync();
skipclean = 1;
while ((ch = getopt(argc, argv, "dfpnNyYb:c:m:")) != -1) {
switch (ch) {
case 'p':
preen++;
break;
case 'b':
skipclean = 0;
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'c':
skipclean = 0;
cvtlevel = argtoi('c', "conversion level", optarg, 10);
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':
case 'N':
nflag++;
yflag = 0;
break;
case 'y':
case 'Y':
yflag++;
nflag = 0;
break;
default:
errexit("usage: %s [-fnpy] [-b block#] [-c level] "
"[-m mode] filesystem ...\n", __progname);
}
}
argc -= optind;
argv += optind;
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
(void)signal(SIGINFO, catchinfo);
if (argc)
while (argc-- > 0)
(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
if (returntosingle)
ret = 2;
exit(ret);
}
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);
}
/*
* Determine whether a filesystem should be checked.
*/
int
docheck(struct fstab *fsp)
{
if ((strcmp(fsp->fs_vfstype, "ufs") &&
strcmp(fsp->fs_vfstype, "ffs")) ||
(strcmp(fsp->fs_type, FSTAB_RW) &&
strcmp(fsp->fs_type, FSTAB_RO)) ||
fsp->fs_passno == 0)
return (0);
return (1);
}
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
int
checkfilesys(char *filesys, char *mntpt, long auxdata, int child)
{
daddr64_t n_ffree, n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int cylno;
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.");
/* FALLTHROUGH */
case -1:
if (fsreadfd != -1) {
(void)close(fsreadfd);
fsreadfd = -1;
}
if (fswritefd != -1) {
(void)close(fswritefd);
fswritefd = -1;
}
return (0);
}
info_filesys = filesys;
/*
* Cleared if any questions answered no. Used to decide if
* the superblock should be marked clean.
*/
resolved = 1;
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0) {
printf("** Last Mounted on %s\n", sblock.fs_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 || usedsoftdep)
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_ffree = sblock.fs_cstotal.cs_nffree;
n_bfree = sblock.fs_cstotal.cs_nbfree;
pwarn("%lld files, %lld used, %lld free ",
n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
if (debug &&
(n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
printf("%lld files missing\n", 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", n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %lld,", 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 = NULL;
duplist = NULL;
muldup = NULL;
inocleanup();
if (fsmodified) {
sblock.fs_time = (time_t)time(NULL);
sbdirty();
}
if (cvtlevel && sblk.b_dirty) {
/*
* Write out the duplicate super blocks
*/
for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
bwrite(fswritefd, (char *)&sblock,
fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
}
if (rerun)
resolved = 0;
ckfini(resolved); /* Don't mark fs clean if fsck needs to be re-run */
free(blockmap);
blockmap = NULL;
free(stmap);
stmap = NULL;
free(lncntp);
lncntp = NULL;
free(sblock.fs_csp);
free(sblk.b_un.b_buf);
free(asblk.b_un.b_buf);
if (!fsmodified)
return (0);
if (!preen)
printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (rerun || !resolved)
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_FFS, "/", flags, &args);
if (ret == 0)
return(0);
}
}
if (!preen)
printf("\n***** REBOOT NOW *****\n");
sync();
return (4);
}
return (0);
}