NetBSD/sbin/fsck_lfs/main.c

332 lines
7.7 KiB
C

/* $NetBSD: main.c,v 1.12 2003/01/28 05:17:13 mrg 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <ufs/ufs/dinode.h>
#include <sys/mount.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/lfs/lfs.h>
#include <fstab.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include <err.h>
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
int returntosingle;
int fake_cleanseg = -1;
int main(int, char *[]);
static int argtoi(int, char *, char *, int);
static int checkfilesys(const char *, char *, long, int);
#if 0
static int docheck(struct fstab *);
#endif
static void usage(void);
int
main(int argc, char **argv)
{
int ch;
int ret = 0;
char *optstring = "b:C:dfi:m:npy";
sync();
skipclean = 1;
exitonfail = 0;
idaddr = 0x0;
while ((ch = getopt(argc, argv, optstring)) != -1) {
switch (ch) {
case 'b':
skipclean = 0;
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'C':
fake_cleanseg = atoi(optarg);
break;
case 'd':
debug++;
break;
case 'e':
exitonfail++;
break;
case 'f':
skipclean = 0;
break;
case 'i':
idaddr = strtol(optarg, NULL, 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();
}
}
#if 0
if (nflag == 0) {
errexit("fsck_lfs cannot write to the filesystem yet; the -n flag is required.\n");
}
#endif
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);
}
#if 0
/*
* Determine whether a filesystem should be checked.
*/
static 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);
}
#endif
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
static int
checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
{
daddr_t n_ffree = 0, n_bfree = 0;
struct dups *dp;
struct zlncnt *zlnp;
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);
}
if (preen == 0) {
printf("** Last Mounted on %s\n", sblock.lfs_fsmnt);
if (hotroot())
printf("** Root file system\n");
}
/*
* 0: check segment checksums, inode ranges
*/
if (preen == 0)
printf("** Phase 0 - Check Segment Summaries and Inode Free List\n");
if (idaddr != sblock.lfs_idaddr)
pwarn("-i given, skipping free list check\n");
else
pass0();
if (preen == 0) {
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0)
printf("** Phase 1 - Check Blocks and Sizes\n");
pass1();
/*
* 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 segment byte totals and dirty flags
*/
if (preen == 0)
printf("** Phase 5 - Check Segment Block Accounting\n");
pass5();
/*
* print out summary statistics
*/
pwarn("%d files, %lld used, %lld free ",
n_files, (long long)n_blks,
(long long)(n_ffree + sblock.lfs_frag * n_bfree));
putchar('\n');
}
if (debug) {
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(" %u,", zlnp->zlncnt);
printf("\n");
}
}
zlnhead = (struct zlncnt *)0;
duplist = (struct dups *)0;
muldup = (struct dups *)0;
inocleanup();
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.ex_flags = 0;
args.export.ex_root = 0;
flags |= MNT_UPDATE | MNT_RELOAD;
ret = mount(MOUNT_LFS, "/", flags, &args);
if (ret == 0)
return (0);
}
}
if (!preen)
printf("\n***** REBOOT NOW *****\n");
sync();
return (4);
}
return (0);
}
static void
usage()
{
(void)fprintf(stderr,
"Usage: %s [-dnpy] [-b block] [-m mode] filesystem ...\n",
getprogname());
exit(1);
}