29f1062b46
* Add lfs_balloc capability to the lfs library. * Extend the Ifile if we run out of free inodes when creating lost+found. * Don't roll forward if we have allocated a lost+found, to avoid conflicts when adding new files in roll-forward. * Make some messages slightly more verbose (e.g. include inode number, and use pwarn() instead of printf() so the messages include the device name when preening). * Change superblock detection/avoidance to use the offset table in the primary superblock, rather than looking at the contents. * Be more verbose about various operations when passed the -d flag, especially roll-forward. * Be more careful about dirops during roll forward, since the cleaner can sometimes write blocks from dirop vnodes. Detect and avoid this problem. * Always check the free list, even if given -i; if we're going to write it we have to check it first. * Mark inodes dirty when blocks are found during roll forward, so the inodes are written with the new block locations. * Update size of inodes if blocks beyond EOF are found during roll forward. * Fix segment accounting for blocks and inodes found during roll forward. * Report statistics on roll forward: how many new/deleted/moved files and how many updated blocks (or "nothing new"). * Don't care if the device being checked is really a device, if we have been passed the -f flag (to facilitate automated testing). * When writing to the disk, use the current time in the segment headers rathern than time 0. * When passed the -i flag, locate the partial segment containing the Ifile inode and use that to calculate lfs_offset, lfs_curseg, lfs_nextseg. (Again for automated testing.)
528 lines
15 KiB
C
528 lines
15 KiB
C
/* $NetBSD: setup.c,v 1.29 2006/07/18 23:37:13 perseant Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Konrad E. Schroder <perseant@hhhh.org>.
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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
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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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
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* notice, this list of conditions and the following disclaimer in the
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* 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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/* #define DKTYPENAMES */
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#define FSTYPENAMES
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/buf.h>
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#include <sys/mount.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/disklabel.h>
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#include <sys/file.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/ufsmount.h>
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#define vnode uvnode
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#include <ufs/lfs/lfs.h>
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#undef vnode
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "bufcache.h"
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#include "vnode.h"
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#include "lfs_user.h"
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#include "fsck.h"
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#include "extern.h"
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#include "fsutil.h"
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extern u_int32_t cksum(void *, size_t);
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static struct disklabel *getdisklabel(const char *, int);
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static uint64_t calcmaxfilesize(int);
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ufs_daddr_t *din_table;
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SEGUSE *seg_table;
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#ifdef DKTYPENAMES
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int useless(void);
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int
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useless(void)
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{
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char **foo = (char **) dktypenames;
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char **bar = (char **) fscknames;
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return foo - bar;
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}
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#endif
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/*
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* calculate the maximum file size allowed with the specified block shift.
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*/
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static uint64_t
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calcmaxfilesize(int bshift)
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{
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uint64_t nptr; /* number of block pointers per block */
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uint64_t maxblock;
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nptr = (1 << bshift) / sizeof(uint32_t);
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maxblock = NDADDR + nptr + nptr * nptr + nptr * nptr * nptr;
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return maxblock << bshift;
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}
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void
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reset_maxino(ino_t len)
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{
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if (debug)
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pwarn("maxino reset from %lld to %lld\n", (long long)maxino,
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(long long)len);
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din_table = (ufs_daddr_t *) realloc(din_table, len * sizeof(*din_table));
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statemap = realloc(statemap, len * sizeof(char));
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typemap = realloc(typemap, len * sizeof(char));
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lncntp = (int16_t *) realloc(lncntp, len * sizeof(int16_t));
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if (din_table == NULL || statemap == NULL || typemap == NULL ||
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lncntp == NULL) {
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errexit("expanding tables failed: out of memory");
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}
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memset(din_table + maxino, 0, (len - maxino) * sizeof(*din_table));
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memset(statemap + maxino, USTATE, (len - maxino) * sizeof(char));
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memset(typemap + maxino, 0, (len - maxino) * sizeof(char));
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memset(lncntp + maxino, 0, (len - maxino) * sizeof(int16_t));
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maxino = len;
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/*
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* We can't roll forward after allocating new inodes in previous
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* phases, or thy would conflict (lost+found, for example, might
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* disappear to be replaced by a file found in roll-forward).
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*/
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no_roll_forward = 1;
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return;
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}
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extern time_t write_time;
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int
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setup(const char *dev)
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{
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long bmapsize;
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struct disklabel *lp;
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struct stat statb;
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int doskipclean;
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u_int64_t maxfilesize;
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int open_flags;
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struct uvnode *ivp;
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struct ubuf *bp;
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int i, isdirty;
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long sn, curseg;
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SEGUSE *sup;
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havesb = 0;
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doskipclean = skipclean;
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if (stat(dev, &statb) < 0) {
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pfatal("Can't stat %s: %s\n", dev, strerror(errno));
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return (0);
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}
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if (!S_ISCHR(statb.st_mode) && skipclean) {
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pfatal("%s is not a character device", dev);
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if (reply("CONTINUE") == 0)
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return (0);
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}
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if (nflag)
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open_flags = O_RDONLY;
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else
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open_flags = O_RDWR;
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if ((fsreadfd = open(dev, open_flags)) < 0) {
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pfatal("Can't open %s: %s\n", dev, strerror(errno));
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return (0);
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}
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if (nflag) {
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if (preen)
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pfatal("NO WRITE ACCESS");
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printf("** %s (NO WRITE)\n", dev);
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quiet = 0;
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} else if (!preen && !quiet)
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printf("** %s\n", dev);
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fsmodified = 0;
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lfdir = 0;
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/* Initialize time in case we have to write */
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time(&write_time);
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bufinit(0); /* XXX we could make a better guess */
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fs = lfs_init(fsreadfd, bflag, idaddr, 0, debug);
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if (fs == NULL) {
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if (preen)
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printf("%s: ", cdevname());
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errexit("BAD SUPER BLOCK OR IFILE INODE NOT FOUND\n");
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}
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if ((lp = getdisklabel((char *) NULL, fsreadfd)) != NULL)
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dev_bsize = secsize = lp->d_secsize;
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else
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dev_bsize = secsize = DEV_BSIZE;
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/* Resize buffer cache now that we have a superblock to guess from. */
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bufrehash((fs->lfs_segtabsz + maxino / fs->lfs_ifpb) << 4);
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if (fs->lfs_pflags & LFS_PF_CLEAN) {
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if (doskipclean) {
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if (!quiet)
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pwarn("%sile system is clean; not checking\n",
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preen ? "f" : "** F");
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return (-1);
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}
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if (!preen)
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pwarn("** File system is already clean\n");
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}
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if (idaddr) {
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daddr_t tdaddr;
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SEGSUM *sp;
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FINFO *fp;
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int bc;
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if (debug)
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pwarn("adjusting offset, serial for -i 0x%lx\n",
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(unsigned long)idaddr);
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tdaddr = sntod(fs, dtosn(fs, idaddr));
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if (sntod(fs, dtosn(fs, tdaddr)) == tdaddr) {
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for (i = 0; i < LFS_MAXNUMSB; i++) {
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if (fs->lfs_sboffs[i] == tdaddr)
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tdaddr += btofsb(fs, LFS_SBPAD);
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if (fs->lfs_sboffs[i] > tdaddr)
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break;
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}
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}
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fs->lfs_offset = tdaddr;
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if (debug)
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pwarn("begin with offset/serial 0x%x/%d\n",
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(int)fs->lfs_offset, (int)fs->lfs_serial);
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while (tdaddr < idaddr) {
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bread(fs->lfs_devvp, fsbtodb(fs, tdaddr),
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fs->lfs_sumsize,
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NULL, &bp);
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sp = (SEGSUM *)bp->b_data;
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if (sp->ss_sumsum != cksum(&sp->ss_datasum,
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fs->lfs_sumsize -
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sizeof(sp->ss_sumsum))) {
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brelse(bp);
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break;
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}
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fp = (FINFO *)(sp + 1);
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bc = howmany(sp->ss_ninos, INOPB(fs)) <<
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(fs->lfs_version > 1 ? fs->lfs_ffshift :
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fs->lfs_bshift);
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for (i = 0; i < sp->ss_nfinfo; i++) {
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bc += fp->fi_lastlength + ((fp->fi_nblocks - 1)
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<< fs->lfs_bshift);
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fp = (FINFO *)(fp->fi_blocks + fp->fi_nblocks);
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}
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tdaddr += btofsb(fs, bc) + 1;
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fs->lfs_offset = tdaddr;
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fs->lfs_serial = sp->ss_serial + 1;
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brelse(bp);
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}
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/*
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* Set curseg, nextseg appropriately -- inlined from
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* lfs_newseg()
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*/
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curseg = dtosn(fs, fs->lfs_offset);
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fs->lfs_curseg = sntod(fs, curseg);
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for (sn = curseg + fs->lfs_interleave;;) {
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sn = (sn + 1) % fs->lfs_nseg;
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if (sn == curseg)
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errx(1, "init: no clean segments");
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LFS_SEGENTRY(sup, fs, sn, bp);
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isdirty = sup->su_flags & SEGUSE_DIRTY;
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brelse(bp);
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if (!isdirty)
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break;
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}
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/* Skip superblock if necessary */
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for (i = 0; i < LFS_MAXNUMSB; i++)
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if (fs->lfs_offset == fs->lfs_sboffs[i])
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fs->lfs_offset += btofsb(fs, LFS_SBPAD);
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++fs->lfs_nactive;
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fs->lfs_nextseg = sntod(fs, sn);
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if (debug) {
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pwarn("offset = 0x%" PRIx32 ", serial = %" PRId64 "\n",
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fs->lfs_offset, fs->lfs_serial);
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pwarn("curseg = %" PRIx32 ", nextseg = %" PRIx32 "\n",
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fs->lfs_curseg, fs->lfs_nextseg);
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}
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if (!nflag && !skipclean) {
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fs->lfs_idaddr = idaddr;
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fsmodified = 1;
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sbdirty();
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}
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}
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if (debug) {
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pwarn("idaddr = 0x%lx\n", idaddr ? (unsigned long)idaddr :
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(unsigned long)fs->lfs_idaddr);
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pwarn("dev_bsize = %lu\n", dev_bsize);
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pwarn("lfs_bsize = %lu\n", (unsigned long) fs->lfs_bsize);
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pwarn("lfs_fsize = %lu\n", (unsigned long) fs->lfs_fsize);
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pwarn("lfs_frag = %lu\n", (unsigned long) fs->lfs_frag);
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pwarn("lfs_inopb = %lu\n", (unsigned long) fs->lfs_inopb);
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}
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if (fs->lfs_version == 1)
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maxfsblock = fs->lfs_size * (fs->lfs_bsize / dev_bsize);
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else
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maxfsblock = fs->lfs_size;
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maxfilesize = calcmaxfilesize(fs->lfs_bshift);
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if ((fs->lfs_minfree < 0 || fs->lfs_minfree > 99)) {
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pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
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fs->lfs_minfree);
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if (reply("SET TO DEFAULT") == 1) {
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fs->lfs_minfree = 10;
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sbdirty();
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}
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}
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if (fs->lfs_bmask != fs->lfs_bsize - 1) {
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pwarn("INCORRECT BMASK=0x%x IN SUPERBLOCK (SHOULD BE 0x%x)",
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(unsigned int) fs->lfs_bmask,
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(unsigned int) fs->lfs_bsize - 1);
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fs->lfs_bmask = fs->lfs_bsize - 1;
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if (preen)
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printf(" (FIXED)\n");
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if (preen || reply("FIX") == 1) {
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sbdirty();
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}
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}
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if (fs->lfs_ffmask != fs->lfs_fsize - 1) {
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pwarn("INCORRECT FFMASK=%" PRId64 " IN SUPERBLOCK",
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fs->lfs_ffmask);
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fs->lfs_ffmask = fs->lfs_fsize - 1;
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if (preen)
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printf(" (FIXED)\n");
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if (preen || reply("FIX") == 1) {
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sbdirty();
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}
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}
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if (fs->lfs_fbmask != (1 << fs->lfs_fbshift) - 1) {
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pwarn("INCORRECT FFMASK=%" PRId64 " IN SUPERBLOCK",
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fs->lfs_ffmask);
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fs->lfs_fbmask = (1 << fs->lfs_fbshift) - 1;
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if (preen)
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printf(" (FIXED)\n");
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if (preen || reply("FIX") == 1) {
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sbdirty();
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}
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}
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if (fs->lfs_maxfilesize != maxfilesize) {
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pwarn(
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"INCORRECT MAXFILESIZE=%llu IN SUPERBLOCK (SHOULD BE %llu WITH BSHIFT %d)",
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(unsigned long long) fs->lfs_maxfilesize,
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(unsigned long long) maxfilesize, (int)fs->lfs_bshift);
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if (preen)
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printf(" (FIXED)\n");
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if (preen || reply("FIX") == 1) {
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fs->lfs_maxfilesize = maxfilesize;
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sbdirty();
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}
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}
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if (fs->lfs_maxsymlinklen != MAXSYMLINKLEN_UFS1) {
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pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK",
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fs->lfs_maxsymlinklen);
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|
fs->lfs_maxsymlinklen = MAXSYMLINKLEN_UFS1;
|
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if (preen)
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|
printf(" (FIXED)\n");
|
|
if (preen || reply("FIX") == 1) {
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sbdirty();
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}
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}
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|
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/*
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* Read in the Ifile; we'll be using it a lot.
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* XXX If the Ifile is corrupted we are in bad shape. We need to
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* XXX run through the segment headers of the entire disk to
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* XXX reconstruct the inode table, then pretend all segments are
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* XXX dirty while we do the rest.
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|
*/
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ivp = fs->lfs_ivnode;
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|
maxino = ((VTOI(ivp)->i_ffs1_size - (fs->lfs_cleansz + fs->lfs_segtabsz)
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* fs->lfs_bsize) / fs->lfs_bsize) * fs->lfs_ifpb;
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if (debug)
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|
pwarn("maxino = %llu\n", (unsigned long long)maxino);
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for (i = 0; i < VTOI(ivp)->i_ffs1_size; i += fs->lfs_bsize) {
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|
bread(ivp, i >> fs->lfs_bshift, fs->lfs_bsize, NOCRED, &bp);
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|
/* XXX check B_ERROR */
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|
brelse(bp);
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|
}
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|
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/*
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|
* allocate and initialize the necessary maps
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|
*/
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|
din_table = (ufs_daddr_t *) malloc(maxino * sizeof(*din_table));
|
|
if (din_table == NULL) {
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|
pwarn("cannot alloc %lu bytes for din_table\n",
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|
(unsigned long) maxino * sizeof(*din_table));
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goto badsblabel;
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|
}
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|
memset(din_table, 0, maxino * sizeof(*din_table));
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seg_table = (SEGUSE *) malloc(fs->lfs_nseg * sizeof(SEGUSE));
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if (seg_table == NULL) {
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pwarn("cannot alloc %lu bytes for seg_table\n",
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(unsigned long) fs->lfs_nseg * sizeof(SEGUSE));
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goto badsblabel;
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}
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|
memset(seg_table, 0, fs->lfs_nseg * sizeof(SEGUSE));
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|
/* 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) {
|
|
pwarn("cannot alloc %u bytes for blockmap\n",
|
|
(unsigned) bmapsize);
|
|
goto badsblabel;
|
|
}
|
|
statemap = calloc((unsigned) maxino, sizeof(char));
|
|
if (statemap == NULL) {
|
|
pwarn("cannot alloc %u bytes for statemap\n",
|
|
(unsigned) maxino);
|
|
goto badsblabel;
|
|
}
|
|
typemap = calloc((unsigned) maxino, sizeof(char));
|
|
if (typemap == NULL) {
|
|
pwarn("cannot alloc %u bytes for typemap\n",
|
|
(unsigned) maxino);
|
|
goto badsblabel;
|
|
}
|
|
lncntp = (int16_t *) calloc((unsigned) maxino, sizeof(int16_t));
|
|
if (lncntp == NULL) {
|
|
pwarn("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) {
|
|
pwarn("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);
|
|
}
|