e4a905d1e0
Commit fe5e6e2 improved FFS directory placement when creating new
directories. It is done by keeping track of the depth of directories
in the filesystem and placing those lower in the tree closer together
while spreading out those higher in the tree.
Fsck_ffs(8) checks these depths and if incorrect adjusts them to
their correct value. When running in background fsck_ffs(8) needs
to be able to make an adjustment to the depth. This commit adds
the sysctl to make such an adjustment and adds the code to fsck_ffs(8)
to use the new sysctl.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
176 lines
7.2 KiB
C
176 lines
7.2 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 adjdepth[MIBSIZE]; /* MIB cmd to adjust directory depth count */
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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(adjdepth, 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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