da86e7a20d
Pass 1 of fsck_ffs checks the integrity of all the cylinder groups. If any are found to have been corrupted it offers to rebuild them. Pass 5 then makes a second pass over the cylinder groups to validate their block and inode maps. Pass 5 assumes that the cylinder groups are not corrupted and can segment fault if they are corrupted. Rather than rerunning the corruption checks a second time in pass 5, this fix keeps track whether any corrupt cylinder groups were found but not fixed in pass 1 either due to running with the -n flag or by explicitly answering `no' when asked whether to fix a corrupted cylinder group. If any corrupted cylinder groups remain after pass 1, fsck_ffs will decline to run pass 5. Instead it marks the filesystem as unclean so that fsck_ffs will need to be run again before the filesystem can be mounted. This patch cleans up and documents the return value from check_cgmagic(). It also renames the variable / parameter "rebuildcg" to "rebuiltcg". This parameter describes whether the cylinder group has been rebuilt rather than whether it should be rebuilt. Reported by: Chuck Silvers Reviewed by: Chuck Silvers MFC after: 1 week
174 lines
7.1 KiB
C
174 lines
7.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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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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#if 0
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1986, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <string.h>
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#include "fsck.h"
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long readcnt[BT_NUMBUFTYPES];
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long totalreadcnt[BT_NUMBUFTYPES];
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struct timespec readtime[BT_NUMBUFTYPES];
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struct timespec totalreadtime[BT_NUMBUFTYPES];
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struct timespec startprog;
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struct bufarea sblk; /* file system superblock */
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struct bufarea *pdirbp; /* current directory contents */
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ino_t cursnapshot;
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long dirhash, inplast;
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unsigned long numdirs, listmax;
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long countdirs; /* number of directories we actually found */
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int adjrefcnt[MIBSIZE]; /* MIB command to adjust inode reference cnt */
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int adjblkcnt[MIBSIZE]; /* MIB command to adjust inode block count */
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int setsize[MIBSIZE]; /* MIB command to set inode size */
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int adjndir[MIBSIZE]; /* MIB command to adjust number of directories */
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int adjnbfree[MIBSIZE]; /* MIB command to adjust number of free blocks */
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int adjnifree[MIBSIZE]; /* MIB command to adjust number of free inodes */
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int adjnffree[MIBSIZE]; /* MIB command to adjust number of free frags */
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int adjnumclusters[MIBSIZE]; /* MIB command to adjust number of free clusters */
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int freefiles[MIBSIZE]; /* MIB command to free a set of files */
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int freedirs[MIBSIZE]; /* MIB command to free a set of directories */
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int freeblks[MIBSIZE]; /* MIB command to free a set of data blocks */
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struct fsck_cmd cmd; /* sysctl file system update commands */
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char snapname[BUFSIZ]; /* when doing snapshots, the name of the file */
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char *cdevname; /* name of device being checked */
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long dev_bsize; /* computed value of DEV_BSIZE */
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long secsize; /* actual disk sector size */
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u_int real_dev_bsize; /* actual disk sector size, not overridden */
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char nflag; /* assume a no response */
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char yflag; /* assume a yes response */
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int bkgrdflag; /* use a snapshot to run on an active system */
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off_t bflag; /* location of alternate super block */
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int debug; /* output debugging info */
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int Eflag; /* delete empty data blocks */
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int Zflag; /* zero empty data blocks */
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int zflag; /* zero unused directory space */
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int inoopt; /* trim out unused inodes */
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char ckclean; /* only do work if not cleanly unmounted */
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int cvtlevel; /* convert to newer file system format */
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int ckhashadd; /* check hashes to be added */
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int bkgrdcheck; /* determine if background check is possible */
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int bkgrdsumadj; /* whether the kernel have ability to adjust superblock summary */
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char usedsoftdep; /* just fix soft dependency inconsistencies */
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char preen; /* just fix normal inconsistencies */
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char rerun; /* rerun fsck. Only used in non-preen mode */
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int returntosingle; /* 1 => return to single user mode on exit */
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char resolved; /* cleared if unresolved changes => not clean */
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char havesb; /* superblock has been read */
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char skipclean; /* skip clean file systems if preening */
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int fsmodified; /* 1 => write done to file system */
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int fsreadfd; /* file descriptor for reading file system */
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int fswritefd; /* file descriptor for writing file system */
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int surrender; /* Give up if reads fail */
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int wantrestart; /* Restart fsck on early termination */
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ufs2_daddr_t maxfsblock; /* number of blocks in the file system */
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char *blockmap; /* ptr to primary blk allocation map */
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ino_t maxino; /* number of inodes in file system */
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ino_t lfdir; /* lost & found directory inode number */
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const char *lfname; /* lost & found directory name */
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int lfmode; /* lost & found directory creation mode */
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ufs2_daddr_t n_blks; /* number of blocks in use */
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int cgheader_corrupt; /* one or more CG headers are corrupt */
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ino_t n_files; /* number of files in use */
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volatile sig_atomic_t got_siginfo; /* received a SIGINFO */
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volatile sig_atomic_t got_sigalarm; /* received a SIGALRM */
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union dinode zino;
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struct dups *duplist;
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struct dups *muldup;
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struct inostatlist *inostathead;
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void
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fsckinit(void)
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{
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bzero(readcnt, sizeof(long) * BT_NUMBUFTYPES);
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bzero(totalreadcnt, sizeof(long) * BT_NUMBUFTYPES);
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bzero(readtime, sizeof(struct timespec) * BT_NUMBUFTYPES);
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bzero(totalreadtime, sizeof(struct timespec) * BT_NUMBUFTYPES);
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bzero(&startprog, sizeof(struct timespec));
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bzero(&sblk, sizeof(struct bufarea));
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cursnapshot = 0;
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listmax = numdirs = dirhash = inplast = 0;
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countdirs = 0;
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bzero(adjrefcnt, sizeof(int) * MIBSIZE);
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bzero(adjblkcnt, sizeof(int) * MIBSIZE);
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bzero(setsize, sizeof(int) * MIBSIZE);
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bzero(adjndir, sizeof(int) * MIBSIZE);
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bzero(adjnbfree, sizeof(int) * MIBSIZE);
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bzero(adjnifree, sizeof(int) * MIBSIZE);
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bzero(adjnffree, sizeof(int) * MIBSIZE);
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bzero(adjnumclusters, sizeof(int) * MIBSIZE);
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bzero(freefiles, sizeof(int) * MIBSIZE);
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bzero(freedirs, sizeof(int) * MIBSIZE);
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bzero(freeblks, sizeof(int) * MIBSIZE);
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bzero(&cmd, sizeof(struct fsck_cmd));
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bzero(snapname, sizeof(char) * BUFSIZ);
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cdevname = NULL;
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dev_bsize = 0;
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secsize = 0;
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real_dev_bsize = 0;
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bkgrdsumadj = 0;
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usedsoftdep = 0;
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rerun = 0;
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returntosingle = 0;
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resolved = 0;
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havesb = 0;
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fsmodified = 0;
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fsreadfd = -1;
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fswritefd = -1;
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maxfsblock = 0;
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maxino = 0;
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lfdir = 0;
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lfname = "lost+found";
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lfmode = 0700;
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n_blks = 0;
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n_files = 0;
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cgheader_corrupt = 0;
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got_siginfo = 0;
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got_sigalarm = 0;
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bzero(&zino.dp1, sizeof(struct ufs1_dinode));
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bzero(&zino.dp2, sizeof(struct ufs2_dinode));
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}
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