NetBSD/sbin/fsck_lfs/setup.c

421 lines
13 KiB
C

/* $NetBSD: setup.c,v 1.26 2005/09/13 04:14:17 christos Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Konrad E. Schroder <perseant@hhhh.org>.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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.
*/
/* #define DKTYPENAMES */
#define FSTYPENAMES
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/buf.h>
#include <sys/mount.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/file.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#define vnode uvnode
#include <ufs/lfs/lfs.h>
#undef vnode
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bufcache.h"
#include "vnode.h"
#include "lfs_user.h"
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
static struct disklabel *getdisklabel(const char *, int);
static uint64_t calcmaxfilesize(int);
ufs_daddr_t *din_table;
SEGUSE *seg_table;
#ifdef DKTYPENAMES
int useless(void);
int
useless(void)
{
char **foo = (char **) dktypenames;
char **bar = (char **) fscknames;
return foo - bar;
}
#endif
/*
* calculate the maximum file size allowed with the specified block shift.
*/
static uint64_t
calcmaxfilesize(int bshift)
{
uint64_t nptr; /* number of block pointers per block */
uint64_t maxblock;
nptr = (1 << bshift) / sizeof(uint32_t);
maxblock = NDADDR + nptr + nptr * nptr + nptr * nptr * nptr;
return maxblock << bshift;
}
void
reset_maxino(ino_t len)
{
din_table = (ufs_daddr_t *) realloc(din_table, len * sizeof(*din_table));
statemap = realloc(statemap, len * sizeof(char));
typemap = realloc(typemap, len * sizeof(char));
lncntp = (int16_t *) realloc(lncntp, len * sizeof(int16_t));
if (din_table == NULL || statemap == NULL || typemap == NULL ||
lncntp == NULL) {
errexit("expanding tables failed: out of memory");
}
memset(din_table + maxino, 0, (len - maxino) * sizeof(*din_table));
memset(statemap + maxino, 0, (len - maxino) * sizeof(char));
memset(typemap + maxino, 0, (len - maxino) * sizeof(char));
memset(lncntp + maxino, 0, (len - maxino) * sizeof(int16_t));
maxino = len;
return;
}
int
setup(const char *dev)
{
long bmapsize;
struct disklabel *lp;
struct stat statb;
int doskipclean;
u_int64_t maxfilesize;
int open_flags;
struct uvnode *ivp;
struct ubuf *bp;
int i;
SEGUSE *sup;
havesb = 0;
doskipclean = skipclean;
if (stat(dev, &statb) < 0) {
printf("Can't stat %s: %s\n", dev, strerror(errno));
return (0);
}
if (!S_ISCHR(statb.st_mode)) {
pfatal("%s is not a character device", dev);
if (reply("CONTINUE") == 0)
return (0);
}
if (nflag)
open_flags = O_RDONLY;
else
open_flags = O_RDWR;
if ((fsreadfd = open(dev, open_flags)) < 0) {
printf("Can't open %s: %s\n", dev, strerror(errno));
return (0);
}
if (nflag) {
if (preen)
pfatal("NO WRITE ACCESS");
printf("** %s (NO WRITE)\n", dev);
quiet = 0;
} else if (!preen && !quiet)
printf("** %s\n", dev);
fsmodified = 0;
lfdir = 0;
bufinit(0); /* XXX we could make a better guess */
fs = lfs_init(fsreadfd, bflag, idaddr, 0, debug);
if (fs == NULL) {
if (preen)
printf("%s: ", cdevname());
pfatal("BAD SUPER BLOCK\n");
}
if ((lp = getdisklabel((char *) NULL, fsreadfd)) != NULL)
dev_bsize = secsize = lp->d_secsize;
else
dev_bsize = secsize = DEV_BSIZE;
/* Resize buffer cache now that we have a superblock to guess from. */
bufrehash((fs->lfs_segtabsz + maxino / fs->lfs_ifpb) << 4);
if (fs->lfs_pflags & LFS_PF_CLEAN) {
if (doskipclean) {
if (!quiet)
pwarn("%sile system is clean; not checking\n",
preen ? "f" : "** F");
return (-1);
}
if (!preen)
pwarn("** File system is already clean\n");
}
if (debug) {
printf("idaddr = 0x%lx\n", idaddr ? (unsigned long)idaddr :
(unsigned long)fs->lfs_idaddr);
printf("dev_bsize = %lu\n", dev_bsize);
printf("lfs_bsize = %lu\n", (unsigned long) fs->lfs_bsize);
printf("lfs_fsize = %lu\n", (unsigned long) fs->lfs_fsize);
printf("lfs_frag = %lu\n", (unsigned long) fs->lfs_frag);
printf("lfs_inopb = %lu\n", (unsigned long) fs->lfs_inopb);
}
if (fs->lfs_version == 1)
maxfsblock = fs->lfs_size * (fs->lfs_bsize / dev_bsize);
else
maxfsblock = fs->lfs_size;
maxfilesize = calcmaxfilesize(fs->lfs_bshift);
if ((fs->lfs_minfree < 0 || fs->lfs_minfree > 99)) {
pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
fs->lfs_minfree);
if (reply("SET TO DEFAULT") == 1) {
fs->lfs_minfree = 10;
sbdirty();
}
}
if (fs->lfs_bmask != fs->lfs_bsize - 1) {
pwarn("INCORRECT BMASK=%x IN SUPERBLOCK (should be %x)",
(unsigned int) fs->lfs_bmask,
(unsigned int) fs->lfs_bsize - 1);
fs->lfs_bmask = fs->lfs_bsize - 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
}
}
if (fs->lfs_ffmask != fs->lfs_fsize - 1) {
pwarn("INCORRECT FFMASK=%" PRId64 " IN SUPERBLOCK",
fs->lfs_ffmask);
fs->lfs_ffmask = fs->lfs_fsize - 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
}
}
if (fs->lfs_fbmask != (1 << fs->lfs_fbshift) - 1) {
pwarn("INCORRECT FFMASK=%" PRId64 " IN SUPERBLOCK",
fs->lfs_ffmask);
fs->lfs_fbmask = (1 << fs->lfs_fbshift) - 1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
}
}
if (fs->lfs_maxfilesize != maxfilesize) {
pwarn(
"INCORRECT MAXFILESIZE=%llu IN SUPERBLOCK (should be %llu with bshift %d)",
(unsigned long long) fs->lfs_maxfilesize,
(unsigned long long) maxfilesize, (int)fs->lfs_bshift);
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
fs->lfs_maxfilesize = maxfilesize;
sbdirty();
}
}
if (fs->lfs_maxsymlinklen != MAXSYMLINKLEN_UFS1) {
pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK",
fs->lfs_maxsymlinklen);
fs->lfs_maxsymlinklen = MAXSYMLINKLEN_UFS1;
if (preen)
printf(" (FIXED)\n");
if (preen || reply("FIX") == 1) {
sbdirty();
}
}
/*
* Read in the Ifile; we'll be using it a lot.
* XXX If the Ifile is corrupted we are in bad shape. We need to
* XXX run through the segment headers of the entire disk to
* XXX reconstruct the inode table, then pretend all segments are
* XXX dirty while we do the rest.
*/
ivp = fs->lfs_ivnode;
maxino = ((VTOI(ivp)->i_ffs1_size - (fs->lfs_cleansz + fs->lfs_segtabsz)
* fs->lfs_bsize) / fs->lfs_bsize) * fs->lfs_ifpb;
if (debug)
printf("maxino = %llu\n", (unsigned long long)maxino);
for (i = 0; i < VTOI(ivp)->i_ffs1_size; i += fs->lfs_bsize) {
bread(ivp, i >> fs->lfs_bshift, fs->lfs_bsize, NOCRED, &bp);
/* XXX check B_ERROR */
brelse(bp);
}
/*
* allocate and initialize the necessary maps
*/
din_table = (ufs_daddr_t *) malloc(maxino * sizeof(*din_table));
if (din_table == NULL) {
printf("cannot alloc %lu bytes for din_table\n",
(unsigned long) maxino * sizeof(*din_table));
goto badsblabel;
}
memset(din_table, 0, maxino * sizeof(*din_table));
seg_table = (SEGUSE *) malloc(fs->lfs_nseg * sizeof(SEGUSE));
if (seg_table == NULL) {
printf("cannot alloc %lu bytes for seg_table\n",
(unsigned long) fs->lfs_nseg * sizeof(SEGUSE));
goto badsblabel;
}
memset(seg_table, 0, fs->lfs_nseg * sizeof(SEGUSE));
/* Get segment flags */
for (i = 0; i < fs->lfs_nseg; i++) {
LFS_SEGENTRY(sup, fs, i, bp);
seg_table[i].su_flags = sup->su_flags & ~SEGUSE_ACTIVE;
if (preen)
seg_table[i].su_nbytes = sup->su_nbytes;
brelse(bp);
}
/* Initialize Ifile entry */
din_table[fs->lfs_ifile] = fs->lfs_idaddr;
seg_table[dtosn(fs, fs->lfs_idaddr)].su_nbytes += DINODE1_SIZE;
#ifndef VERBOSE_BLOCKMAP
bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
blockmap = calloc((unsigned) bmapsize, sizeof(char));
#else
bmapsize = maxfsblock * sizeof(ino_t);
blockmap = (ino_t *) calloc(maxfsblock, sizeof(ino_t));
#endif
if (blockmap == NULL) {
printf("cannot alloc %u bytes for blockmap\n",
(unsigned) bmapsize);
goto badsblabel;
}
statemap = calloc((unsigned) maxino, sizeof(char));
if (statemap == NULL) {
printf("cannot alloc %u bytes for statemap\n",
(unsigned) maxino);
goto badsblabel;
}
typemap = calloc((unsigned) maxino, sizeof(char));
if (typemap == NULL) {
printf("cannot alloc %u bytes for typemap\n",
(unsigned) maxino);
goto badsblabel;
}
lncntp = (int16_t *) calloc((unsigned) maxino, sizeof(int16_t));
if (lncntp == NULL) {
printf("cannot alloc %lu bytes for lncntp\n",
(unsigned long) maxino * sizeof(int16_t));
goto badsblabel;
}
if (preen) {
n_files = fs->lfs_nfiles;
n_blks = fs->lfs_dsize - fs->lfs_bfree;
numdirs = maxino;
inplast = 0;
listmax = numdirs + 10;
inpsort = (struct inoinfo **) calloc((unsigned) listmax,
sizeof(struct inoinfo *));
inphead = (struct inoinfo **) calloc((unsigned) numdirs,
sizeof(struct inoinfo *));
if (inpsort == NULL || inphead == NULL) {
printf("cannot alloc %lu bytes for inphead\n",
(unsigned long) numdirs * sizeof(struct inoinfo *));
exit(1);
}
}
return (1);
badsblabel:
ckfini(0);
return (0);
}
static struct disklabel *
getdisklabel(const char *s, int fd)
{
static struct disklabel lab;
if (ioctl(fd, DIOCGDINFO, (char *) &lab) < 0) {
if (s == NULL)
return ((struct disklabel *) NULL);
pwarn("ioctl (GCINFO): %s\n", strerror(errno));
return NULL;
}
return (&lab);
}